Commit | Line | Data |
---|---|---|
4ef0d4d0 | 1 | /* Functions for image support on window system. |
32d72c2f | 2 | |
ba318903 | 3 | Copyright (C) 1989, 1992-2014 Free Software Foundation, Inc. |
4ef0d4d0 KS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
4ef0d4d0 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
4ef0d4d0 KS |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ef0d4d0 KS |
19 | |
20 | #include <config.h> | |
406af475 | 21 | #include "sysstdio.h" |
4ef0d4d0 | 22 | #include <unistd.h> |
4ef0d4d0 | 23 | |
1ba38c42 PE |
24 | /* Include this before including <setjmp.h> to work around bugs with |
25 | older libpng; see Bug#17429. */ | |
26 | #if defined HAVE_PNG && !defined HAVE_NS | |
27 | # include <png.h> | |
28 | #endif | |
29 | ||
c3417a74 | 30 | #include <setjmp.h> |
620f13b0 PE |
31 | #include <c-ctype.h> |
32 | ||
4ef0d4d0 KS |
33 | #include "lisp.h" |
34 | #include "frame.h" | |
35 | #include "window.h" | |
36 | #include "dispextern.h" | |
37 | #include "blockinput.h" | |
38 | #include "systime.h" | |
39 | #include <epaths.h> | |
3dcc8b84 | 40 | #include "character.h" |
022af124 | 41 | #include "coding.h" |
6087292e | 42 | #include "termhooks.h" |
3dcc8b84 | 43 | #include "font.h" |
4ef0d4d0 | 44 | |
17a2cbbd | 45 | #ifdef HAVE_SYS_STAT_H |
4ef0d4d0 | 46 | #include <sys/stat.h> |
17a2cbbd DC |
47 | #endif /* HAVE_SYS_STAT_H */ |
48 | ||
49 | #ifdef HAVE_SYS_TYPES_H | |
50 | #include <sys/types.h> | |
51 | #endif /* HAVE_SYS_TYPES_H */ | |
52 | ||
53 | #ifdef HAVE_WINDOW_SYSTEM | |
54 | #include TERM_HEADER | |
55 | #endif /* HAVE_WINDOW_SYSTEM */ | |
4ef0d4d0 | 56 | |
17a2cbbd | 57 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
58 | #define COLOR_TABLE_SUPPORT 1 |
59 | ||
60 | typedef struct x_bitmap_record Bitmap_Record; | |
5e617bc2 | 61 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
4ef0d4d0 | 62 | #define NO_PIXMAP None |
4ef0d4d0 | 63 | |
9ecf6403 YM |
64 | #define PIX_MASK_RETAIN 0 |
65 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
66 | #endif /* HAVE_X_WINDOWS */ |
67 | ||
4ef0d4d0 | 68 | #ifdef HAVE_NTGUI |
a9e7a9d5 PE |
69 | |
70 | /* We need (or want) w32.h only when we're _not_ compiling for Cygwin. */ | |
71 | #ifdef WINDOWSNT | |
0fda9b75 | 72 | # include "w32.h" |
a9e7a9d5 PE |
73 | #endif |
74 | ||
4ef0d4d0 KS |
75 | /* W32_TODO : Color tables on W32. */ |
76 | #undef COLOR_TABLE_SUPPORT | |
77 | ||
78 | typedef struct w32_bitmap_record Bitmap_Record; | |
5e617bc2 | 79 | #define GET_PIXEL(ximg, x, y) GetPixel (ximg, x, y) |
4ef0d4d0 | 80 | #define NO_PIXMAP 0 |
4ef0d4d0 | 81 | |
9ecf6403 YM |
82 | #define PIX_MASK_RETAIN 0 |
83 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 | 84 | |
4ef0d4d0 KS |
85 | #define x_defined_color w32_defined_color |
86 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 | 87 | |
d14c81ee CB |
88 | /* Versions of libpng, libgif, and libjpeg that we were compiled with, |
89 | or -1 if no PNG/GIF support was compiled in. This is tested by | |
90 | w32-win.el to correctly set up the alist used to search for the | |
91 | respective image libraries. */ | |
92 | Lisp_Object Qlibpng_version, Qlibgif_version, Qlibjpeg_version; | |
93 | ||
4ef0d4d0 KS |
94 | #endif /* HAVE_NTGUI */ |
95 | ||
edfda783 | 96 | #ifdef HAVE_NS |
edfda783 AR |
97 | #undef COLOR_TABLE_SUPPORT |
98 | ||
99 | typedef struct ns_bitmap_record Bitmap_Record; | |
100 | ||
5e617bc2 | 101 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
edfda783 AR |
102 | #define NO_PIXMAP 0 |
103 | ||
edfda783 AR |
104 | #define PIX_MASK_RETAIN 0 |
105 | #define PIX_MASK_DRAW 1 | |
106 | ||
edfda783 AR |
107 | #define x_defined_color(f, name, color_def, alloc) \ |
108 | ns_defined_color (f, name, color_def, alloc, 0) | |
9e50ff0c | 109 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
110 | #endif /* HAVE_NS */ |
111 | ||
112 | ||
97ec208f DN |
113 | /* The symbol `postscript' identifying images of this type. */ |
114 | ||
955cbe7b | 115 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 116 | |
f57e2426 J |
117 | static void x_disable_image (struct frame *, struct image *); |
118 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
119 | Lisp_Object); | |
4ef0d4d0 | 120 | |
f57e2426 J |
121 | static void init_color_table (void); |
122 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 123 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
124 | static void free_color_table (void); |
125 | static unsigned long *colors_in_color_table (int *n); | |
4ef0d4d0 KS |
126 | #endif |
127 | ||
9c90cc06 | 128 | static Lisp_Object QCmax_width, QCmax_height; |
f3f9606c | 129 | |
4ef0d4d0 KS |
130 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap |
131 | id, which is just an int that this section returns. Bitmaps are | |
132 | reference counted so they can be shared among frames. | |
133 | ||
134 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
135 | be used to indicate no bitmap. | |
136 | ||
137 | If you use x_create_bitmap_from_data, then you must keep track of | |
138 | the bitmaps yourself. That is, creating a bitmap from the same | |
139 | data more than once will not be caught. */ | |
140 | ||
edfda783 | 141 | #ifdef HAVE_NS |
bad98418 | 142 | /* Use with images created by ns_image_for_XPM. */ |
f462f075 | 143 | static unsigned long |
edfda783 AR |
144 | XGetPixel (XImagePtr ximage, int x, int y) |
145 | { | |
ed3751c8 | 146 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
147 | } |
148 | ||
bad98418 PE |
149 | /* Use with images created by ns_image_for_XPM; alpha set to 1; |
150 | pixel is assumed to be in RGB form. */ | |
f462f075 | 151 | static void |
edfda783 AR |
152 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) |
153 | { | |
ed3751c8 | 154 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
155 | } |
156 | #endif /* HAVE_NS */ | |
157 | ||
4ef0d4d0 KS |
158 | |
159 | /* Functions to access the contents of a bitmap, given an id. */ | |
160 | ||
5af73b0f | 161 | #ifdef HAVE_X_WINDOWS |
b7e0ef72 | 162 | static int |
a10c8269 | 163 | x_bitmap_height (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 164 | { |
aad3612f | 165 | return FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].height; |
4ef0d4d0 KS |
166 | } |
167 | ||
b7e0ef72 | 168 | static int |
a10c8269 | 169 | x_bitmap_width (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 170 | { |
aad3612f | 171 | return FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].width; |
4ef0d4d0 | 172 | } |
5af73b0f | 173 | #endif |
4ef0d4d0 KS |
174 | |
175 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
62aba0d4 | 176 | ptrdiff_t |
a10c8269 | 177 | x_bitmap_pixmap (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 178 | { |
f6cfbd8f | 179 | /* HAVE_NTGUI needs the explicit cast here. */ |
aad3612f | 180 | return (ptrdiff_t) FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; |
4ef0d4d0 KS |
181 | } |
182 | #endif | |
183 | ||
184 | #ifdef HAVE_X_WINDOWS | |
185 | int | |
a10c8269 | 186 | x_bitmap_mask (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 187 | { |
aad3612f | 188 | return FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].mask; |
4ef0d4d0 KS |
189 | } |
190 | #endif | |
191 | ||
192 | /* Allocate a new bitmap record. Returns index of new record. */ | |
193 | ||
0766b489 | 194 | static ptrdiff_t |
a10c8269 | 195 | x_allocate_bitmap_record (struct frame *f) |
4ef0d4d0 | 196 | { |
aad3612f | 197 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
0766b489 | 198 | ptrdiff_t i; |
4ef0d4d0 | 199 | |
4ef0d4d0 KS |
200 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) |
201 | return ++dpyinfo->bitmaps_last; | |
202 | ||
203 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
204 | if (dpyinfo->bitmaps[i].refcount == 0) | |
205 | return i + 1; | |
206 | ||
a69fbedb PE |
207 | dpyinfo->bitmaps = |
208 | xpalloc (dpyinfo->bitmaps, &dpyinfo->bitmaps_size, | |
209 | 10, -1, sizeof *dpyinfo->bitmaps); | |
4ef0d4d0 KS |
210 | return ++dpyinfo->bitmaps_last; |
211 | } | |
212 | ||
213 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
214 | ||
215 | void | |
a10c8269 | 216 | x_reference_bitmap (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 217 | { |
aad3612f | 218 | ++FRAME_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; |
4ef0d4d0 KS |
219 | } |
220 | ||
221 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
222 | ||
0766b489 | 223 | ptrdiff_t |
d3da34e0 | 224 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 | 225 | { |
aad3612f | 226 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
0766b489 | 227 | ptrdiff_t id; |
4ef0d4d0 KS |
228 | |
229 | #ifdef HAVE_X_WINDOWS | |
230 | Pixmap bitmap; | |
231 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
232 | bits, width, height); | |
233 | if (! bitmap) | |
234 | return -1; | |
235 | #endif /* HAVE_X_WINDOWS */ | |
236 | ||
237 | #ifdef HAVE_NTGUI | |
238 | Pixmap bitmap; | |
239 | bitmap = CreateBitmap (width, height, | |
aad3612f DA |
240 | FRAME_DISPLAY_INFO (XFRAME (frame))->n_planes, |
241 | FRAME_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
4ef0d4d0 KS |
242 | bits); |
243 | if (! bitmap) | |
244 | return -1; | |
245 | #endif /* HAVE_NTGUI */ | |
246 | ||
edfda783 | 247 | #ifdef HAVE_NS |
ed3751c8 | 248 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
249 | if (!bitmap) |
250 | return -1; | |
251 | #endif | |
252 | ||
4ef0d4d0 | 253 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 254 | |
edfda783 AR |
255 | #ifdef HAVE_NS |
256 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
257 | dpyinfo->bitmaps[id - 1].depth = 1; | |
258 | #endif | |
259 | ||
4ef0d4d0 KS |
260 | dpyinfo->bitmaps[id - 1].file = NULL; |
261 | dpyinfo->bitmaps[id - 1].height = height; | |
262 | dpyinfo->bitmaps[id - 1].width = width; | |
263 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
264 | ||
265 | #ifdef HAVE_X_WINDOWS | |
266 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
96c06863 | 267 | dpyinfo->bitmaps[id - 1].have_mask = false; |
4ef0d4d0 KS |
268 | dpyinfo->bitmaps[id - 1].depth = 1; |
269 | #endif /* HAVE_X_WINDOWS */ | |
270 | ||
271 | #ifdef HAVE_NTGUI | |
272 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
273 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
274 | dpyinfo->bitmaps[id - 1].depth = 1; | |
275 | #endif /* HAVE_NTGUI */ | |
276 | ||
277 | return id; | |
278 | } | |
279 | ||
280 | /* Create bitmap from file FILE for frame F. */ | |
281 | ||
0766b489 | 282 | ptrdiff_t |
d3da34e0 | 283 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 284 | { |
aad3612f | 285 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
edfda783 | 286 | |
4ef0d4d0 KS |
287 | #ifdef HAVE_NTGUI |
288 | return -1; /* W32_TODO : bitmap support */ | |
289 | #endif /* HAVE_NTGUI */ | |
290 | ||
edfda783 | 291 | #ifdef HAVE_NS |
0766b489 | 292 | ptrdiff_t id; |
ed3751c8 | 293 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
294 | |
295 | if (!bitmap) | |
296 | return -1; | |
297 | ||
298 | ||
299 | id = x_allocate_bitmap_record (f); | |
300 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
301 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
5b71542d | 302 | dpyinfo->bitmaps[id - 1].file = xlispstrdup (file); |
edfda783 | 303 | dpyinfo->bitmaps[id - 1].depth = 1; |
ed3751c8 JB |
304 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
305 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
edfda783 AR |
306 | return id; |
307 | #endif | |
308 | ||
4ef0d4d0 | 309 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
310 | unsigned int width, height; |
311 | Pixmap bitmap; | |
0766b489 PE |
312 | int xhot, yhot, result; |
313 | ptrdiff_t id; | |
4ef0d4d0 | 314 | Lisp_Object found; |
4ef0d4d0 KS |
315 | char *filename; |
316 | ||
317 | /* Look for an existing bitmap with the same name. */ | |
318 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
319 | { | |
320 | if (dpyinfo->bitmaps[id].refcount | |
321 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 322 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
323 | { |
324 | ++dpyinfo->bitmaps[id].refcount; | |
325 | return id + 1; | |
326 | } | |
327 | } | |
328 | ||
329 | /* Search bitmap-file-path for the file, if appropriate. */ | |
518c40a2 PE |
330 | if (openp (Vx_bitmap_file_path, file, Qnil, &found, |
331 | make_number (R_OK), false) | |
332 | < 0) | |
4ef0d4d0 | 333 | return -1; |
4ef0d4d0 | 334 | |
51b59d79 | 335 | filename = SSDATA (found); |
4ef0d4d0 KS |
336 | |
337 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
338 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
339 | if (result != BitmapSuccess) | |
340 | return -1; | |
341 | ||
342 | id = x_allocate_bitmap_record (f); | |
343 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
96c06863 | 344 | dpyinfo->bitmaps[id - 1].have_mask = false; |
4ef0d4d0 | 345 | dpyinfo->bitmaps[id - 1].refcount = 1; |
5b71542d | 346 | dpyinfo->bitmaps[id - 1].file = xlispstrdup (file); |
4ef0d4d0 KS |
347 | dpyinfo->bitmaps[id - 1].depth = 1; |
348 | dpyinfo->bitmaps[id - 1].height = height; | |
349 | dpyinfo->bitmaps[id - 1].width = width; | |
4ef0d4d0 KS |
350 | |
351 | return id; | |
352 | #endif /* HAVE_X_WINDOWS */ | |
353 | } | |
354 | ||
355 | /* Free bitmap B. */ | |
356 | ||
357 | static void | |
d3da34e0 | 358 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
359 | { |
360 | #ifdef HAVE_X_WINDOWS | |
361 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
362 | if (bm->have_mask) | |
363 | XFreePixmap (dpyinfo->display, bm->mask); | |
364 | #endif /* HAVE_X_WINDOWS */ | |
365 | ||
366 | #ifdef HAVE_NTGUI | |
367 | DeleteObject (bm->pixmap); | |
368 | #endif /* HAVE_NTGUI */ | |
369 | ||
edfda783 | 370 | #ifdef HAVE_NS |
ed3751c8 | 371 | ns_release_object (bm->img); |
edfda783 AR |
372 | #endif |
373 | ||
4ef0d4d0 KS |
374 | if (bm->file) |
375 | { | |
376 | xfree (bm->file); | |
377 | bm->file = NULL; | |
378 | } | |
379 | } | |
380 | ||
381 | /* Remove reference to bitmap with id number ID. */ | |
382 | ||
383 | void | |
a10c8269 | 384 | x_destroy_bitmap (struct frame *f, ptrdiff_t id) |
4ef0d4d0 | 385 | { |
aad3612f | 386 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
4ef0d4d0 KS |
387 | |
388 | if (id > 0) | |
389 | { | |
390 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
391 | ||
392 | if (--bm->refcount == 0) | |
393 | { | |
4d7e6e51 | 394 | block_input (); |
65342ae3 | 395 | free_bitmap_record (dpyinfo, bm); |
4d7e6e51 | 396 | unblock_input (); |
4ef0d4d0 KS |
397 | } |
398 | } | |
399 | } | |
400 | ||
401 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
402 | ||
403 | void | |
d3da34e0 | 404 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 | 405 | { |
0766b489 | 406 | ptrdiff_t i; |
4ef0d4d0 KS |
407 | Bitmap_Record *bm = dpyinfo->bitmaps; |
408 | ||
409 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
410 | if (bm->refcount > 0) | |
65342ae3 | 411 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
412 | |
413 | dpyinfo->bitmaps_last = 0; | |
414 | } | |
415 | ||
578098f3 PE |
416 | static bool x_create_x_image_and_pixmap (struct frame *, int, int, int, |
417 | XImagePtr *, Pixmap *); | |
418 | static void x_destroy_x_image (XImagePtr ximg); | |
4ef0d4d0 | 419 | |
547c9269 YM |
420 | #ifdef HAVE_NTGUI |
421 | static XImagePtr_or_DC image_get_x_image_or_dc (struct frame *, struct image *, | |
422 | bool, HGDIOBJ *); | |
423 | static void image_unget_x_image_or_dc (struct image *, bool, XImagePtr_or_DC, | |
424 | HGDIOBJ); | |
425 | #else | |
426 | static XImagePtr image_get_x_image (struct frame *, struct image *, bool); | |
427 | static void image_unget_x_image (struct image *, bool, XImagePtr); | |
428 | #define image_get_x_image_or_dc(f, img, mask_p, dummy) \ | |
429 | image_get_x_image (f, img, mask_p) | |
430 | #define image_unget_x_image_or_dc(img, mask_p, ximg, dummy) \ | |
431 | image_unget_x_image (img, mask_p, ximg) | |
432 | #endif | |
433 | ||
4ef0d4d0 KS |
434 | #ifdef HAVE_X_WINDOWS |
435 | ||
547c9269 YM |
436 | static void image_sync_to_pixmaps (struct frame *, struct image *); |
437 | ||
4ef0d4d0 KS |
438 | /* Useful functions defined in the section |
439 | `Image type independent image structures' below. */ | |
440 | ||
f57e2426 J |
441 | static unsigned long four_corners_best (XImagePtr ximg, |
442 | int *corners, | |
443 | unsigned long width, | |
444 | unsigned long height); | |
4ef0d4d0 | 445 | |
4ef0d4d0 KS |
446 | |
447 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
448 | It's nicer with some borders in this context */ | |
449 | ||
578098f3 | 450 | void |
0766b489 | 451 | x_create_bitmap_mask (struct frame *f, ptrdiff_t id) |
4ef0d4d0 KS |
452 | { |
453 | Pixmap pixmap, mask; | |
454 | XImagePtr ximg, mask_img; | |
455 | unsigned long width, height; | |
578098f3 | 456 | bool result; |
4ef0d4d0 KS |
457 | unsigned long bg; |
458 | unsigned long x, y, xp, xm, yp, ym; | |
459 | GC gc; | |
460 | ||
aad3612f | 461 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
4ef0d4d0 KS |
462 | |
463 | if (!(id > 0)) | |
578098f3 | 464 | return; |
4ef0d4d0 KS |
465 | |
466 | pixmap = x_bitmap_pixmap (f, id); | |
467 | width = x_bitmap_width (f, id); | |
468 | height = x_bitmap_height (f, id); | |
469 | ||
4d7e6e51 | 470 | block_input (); |
4ef0d4d0 KS |
471 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, |
472 | ~0, ZPixmap); | |
473 | ||
474 | if (!ximg) | |
475 | { | |
4d7e6e51 | 476 | unblock_input (); |
578098f3 | 477 | return; |
4ef0d4d0 KS |
478 | } |
479 | ||
480 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
481 | ||
4d7e6e51 | 482 | unblock_input (); |
4ef0d4d0 KS |
483 | if (!result) |
484 | { | |
485 | XDestroyImage (ximg); | |
578098f3 | 486 | return; |
4ef0d4d0 KS |
487 | } |
488 | ||
6ac3c7bb | 489 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
490 | |
491 | for (y = 0; y < ximg->height; ++y) | |
492 | { | |
493 | for (x = 0; x < ximg->width; ++x) | |
494 | { | |
495 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
496 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
497 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
498 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
499 | if (XGetPixel (ximg, x, y) == bg | |
500 | && XGetPixel (ximg, x, yp) == bg | |
501 | && XGetPixel (ximg, x, ym) == bg | |
502 | && XGetPixel (ximg, xp, y) == bg | |
503 | && XGetPixel (ximg, xp, yp) == bg | |
504 | && XGetPixel (ximg, xp, ym) == bg | |
505 | && XGetPixel (ximg, xm, y) == bg | |
506 | && XGetPixel (ximg, xm, yp) == bg | |
507 | && XGetPixel (ximg, xm, ym) == bg) | |
508 | XPutPixel (mask_img, x, y, 0); | |
509 | else | |
510 | XPutPixel (mask_img, x, y, 1); | |
511 | } | |
512 | } | |
513 | ||
4d7e6e51 | 514 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
515 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); |
516 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
517 | width, height); | |
518 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
519 | ||
96c06863 | 520 | dpyinfo->bitmaps[id - 1].have_mask = true; |
4ef0d4d0 KS |
521 | dpyinfo->bitmaps[id - 1].mask = mask; |
522 | ||
523 | XDestroyImage (ximg); | |
524 | x_destroy_x_image (mask_img); | |
4ef0d4d0 KS |
525 | } |
526 | ||
527 | #endif /* HAVE_X_WINDOWS */ | |
528 | ||
529 | ||
530 | /*********************************************************************** | |
531 | Image types | |
532 | ***********************************************************************/ | |
533 | ||
4ef0d4d0 KS |
534 | /* List of supported image types. Use define_image_type to add new |
535 | types. Use lookup_image_type to find a type for a given symbol. */ | |
536 | ||
537 | static struct image_type *image_types; | |
538 | ||
539 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ | |
540 | ||
955cbe7b | 541 | static Lisp_Object Qxbm; |
4ef0d4d0 KS |
542 | |
543 | /* Keywords. */ | |
544 | ||
955cbe7b | 545 | Lisp_Object QCascent, QCmargin, QCrelief; |
955cbe7b PE |
546 | Lisp_Object QCconversion; |
547 | static Lisp_Object QCheuristic_mask; | |
548 | static Lisp_Object QCcolor_symbols; | |
549 | static Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask, QCgeometry; | |
550 | static Lisp_Object QCcrop, QCrotation; | |
4ef0d4d0 KS |
551 | |
552 | /* Other symbols. */ | |
553 | ||
1100a63c | 554 | static Lisp_Object Qcount, Qextension_data, Qdelay; |
955cbe7b | 555 | static Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; |
4ef0d4d0 | 556 | |
578098f3 | 557 | /* Forward function prototypes. */ |
4ef0d4d0 | 558 | |
641cfd14 | 559 | static struct image_type *lookup_image_type (Lisp_Object); |
f57e2426 J |
560 | static void x_laplace (struct frame *, struct image *); |
561 | static void x_emboss (struct frame *, struct image *); | |
578098f3 | 562 | static void x_build_heuristic_mask (struct frame *, struct image *, |
36a305a7 | 563 | Lisp_Object); |
0fda9b75 | 564 | #ifdef WINDOWSNT |
0855eb52 | 565 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 566 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
567 | #else |
568 | #define CACHE_IMAGE_TYPE(type, status) | |
a9e7a9d5 | 569 | #endif |
0855eb52 JB |
570 | |
571 | #define ADD_IMAGE_TYPE(type) \ | |
572 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
573 | |
574 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 575 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 576 | |
bb4d86b4 | 577 | static struct image_type * |
d07ff9db | 578 | define_image_type (struct image_type *type) |
4ef0d4d0 | 579 | { |
bb4d86b4 CY |
580 | struct image_type *p = NULL; |
581 | Lisp_Object target_type = *type->type; | |
578098f3 | 582 | bool type_valid = 1; |
0855eb52 | 583 | |
4d7e6e51 | 584 | block_input (); |
bb4d86b4 CY |
585 | |
586 | for (p = image_types; p; p = p->next) | |
587 | if (EQ (*p->type, target_type)) | |
588 | goto done; | |
589 | ||
590 | if (type->init) | |
0855eb52 | 591 | { |
a9e7a9d5 | 592 | #if defined HAVE_NTGUI && defined WINDOWSNT |
bb4d86b4 CY |
593 | /* If we failed to load the library before, don't try again. */ |
594 | Lisp_Object tested = Fassq (target_type, Vlibrary_cache); | |
595 | if (CONSP (tested) && NILP (XCDR (tested))) | |
596 | type_valid = 0; | |
597 | else | |
598 | #endif | |
599 | { | |
d07ff9db | 600 | type_valid = type->init (); |
bb4d86b4 CY |
601 | CACHE_IMAGE_TYPE (target_type, type_valid ? Qt : Qnil); |
602 | } | |
603 | } | |
09c01941 | 604 | |
bb4d86b4 | 605 | if (type_valid) |
0855eb52 JB |
606 | { |
607 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
608 | The initialized data segment is read-only. */ | |
09c01941 | 609 | p = xmalloc (sizeof *p); |
ae1d87e2 | 610 | *p = *type; |
0855eb52 JB |
611 | p->next = image_types; |
612 | image_types = p; | |
0855eb52 JB |
613 | } |
614 | ||
bb4d86b4 | 615 | done: |
4d7e6e51 | 616 | unblock_input (); |
bb4d86b4 | 617 | return p; |
4ef0d4d0 KS |
618 | } |
619 | ||
620 | ||
578098f3 | 621 | /* Value is true if OBJECT is a valid Lisp image specification. A |
4ef0d4d0 KS |
622 | valid image specification is a list whose car is the symbol |
623 | `image', and whose rest is a property list. The property list must | |
624 | contain a value for key `:type'. That value must be the name of a | |
625 | supported image type. The rest of the property list depends on the | |
626 | image type. */ | |
627 | ||
578098f3 | 628 | bool |
d3da34e0 | 629 | valid_image_p (Lisp_Object object) |
4ef0d4d0 | 630 | { |
578098f3 | 631 | bool valid_p = 0; |
4ef0d4d0 KS |
632 | |
633 | if (IMAGEP (object)) | |
634 | { | |
635 | Lisp_Object tem; | |
636 | ||
637 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
638 | if (EQ (XCAR (tem), QCtype)) | |
639 | { | |
640 | tem = XCDR (tem); | |
641 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
642 | { | |
643 | struct image_type *type; | |
644 | type = lookup_image_type (XCAR (tem)); | |
645 | if (type) | |
646 | valid_p = type->valid_p (object); | |
647 | } | |
648 | ||
649 | break; | |
650 | } | |
651 | } | |
652 | ||
653 | return valid_p; | |
654 | } | |
655 | ||
656 | ||
657 | /* Log error message with format string FORMAT and argument ARG. | |
658 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
659 | good idea because this would interrupt redisplay, and the error | |
660 | message display would lead to another redisplay. This function | |
661 | therefore simply displays a message. */ | |
662 | ||
663 | static void | |
675e2c69 | 664 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
665 | { |
666 | add_to_log (format, arg1, arg2); | |
667 | } | |
668 | ||
669 | ||
670 | \f | |
671 | /*********************************************************************** | |
672 | Image specifications | |
673 | ***********************************************************************/ | |
674 | ||
675 | enum image_value_type | |
676 | { | |
677 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
678 | IMAGE_STRING_VALUE, | |
679 | IMAGE_STRING_OR_NIL_VALUE, | |
680 | IMAGE_SYMBOL_VALUE, | |
681 | IMAGE_POSITIVE_INTEGER_VALUE, | |
c4a07a4c | 682 | IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, |
4ef0d4d0 KS |
683 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, |
684 | IMAGE_ASCENT_VALUE, | |
685 | IMAGE_INTEGER_VALUE, | |
686 | IMAGE_FUNCTION_VALUE, | |
687 | IMAGE_NUMBER_VALUE, | |
688 | IMAGE_BOOL_VALUE | |
689 | }; | |
690 | ||
691 | /* Structure used when parsing image specifications. */ | |
692 | ||
693 | struct image_keyword | |
694 | { | |
695 | /* Name of keyword. */ | |
675e2c69 | 696 | const char *name; |
4ef0d4d0 KS |
697 | |
698 | /* The type of value allowed. */ | |
699 | enum image_value_type type; | |
700 | ||
578098f3 PE |
701 | /* True means key must be present. */ |
702 | bool mandatory_p; | |
4ef0d4d0 KS |
703 | |
704 | /* Used to recognize duplicate keywords in a property list. */ | |
705 | int count; | |
706 | ||
707 | /* The value that was found. */ | |
708 | Lisp_Object value; | |
709 | }; | |
710 | ||
711 | ||
4ef0d4d0 KS |
712 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec |
713 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
714 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
715 | image_keywords structures of size NKEYWORDS describing other | |
578098f3 | 716 | allowed keyword/value pairs. Value is true if SPEC is valid. */ |
4ef0d4d0 | 717 | |
578098f3 | 718 | static bool |
d3da34e0 JB |
719 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
720 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
721 | { |
722 | int i; | |
723 | Lisp_Object plist; | |
724 | ||
725 | if (!IMAGEP (spec)) | |
726 | return 0; | |
727 | ||
728 | plist = XCDR (spec); | |
729 | while (CONSP (plist)) | |
730 | { | |
731 | Lisp_Object key, value; | |
732 | ||
733 | /* First element of a pair must be a symbol. */ | |
734 | key = XCAR (plist); | |
735 | plist = XCDR (plist); | |
736 | if (!SYMBOLP (key)) | |
737 | return 0; | |
738 | ||
739 | /* There must follow a value. */ | |
740 | if (!CONSP (plist)) | |
741 | return 0; | |
742 | value = XCAR (plist); | |
743 | plist = XCDR (plist); | |
744 | ||
745 | /* Find key in KEYWORDS. Error if not found. */ | |
746 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 747 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
748 | break; |
749 | ||
750 | if (i == nkeywords) | |
751 | continue; | |
752 | ||
753 | /* Record that we recognized the keyword. If a keywords | |
754 | was found more than once, it's an error. */ | |
755 | keywords[i].value = value; | |
4ef0d4d0 KS |
756 | if (keywords[i].count > 1) |
757 | return 0; | |
d311d28c | 758 | ++keywords[i].count; |
4ef0d4d0 KS |
759 | |
760 | /* Check type of value against allowed type. */ | |
761 | switch (keywords[i].type) | |
762 | { | |
763 | case IMAGE_STRING_VALUE: | |
764 | if (!STRINGP (value)) | |
765 | return 0; | |
766 | break; | |
767 | ||
768 | case IMAGE_STRING_OR_NIL_VALUE: | |
769 | if (!STRINGP (value) && !NILP (value)) | |
770 | return 0; | |
771 | break; | |
772 | ||
773 | case IMAGE_SYMBOL_VALUE: | |
774 | if (!SYMBOLP (value)) | |
775 | return 0; | |
776 | break; | |
777 | ||
778 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
13464394 | 779 | if (! RANGED_INTEGERP (1, value, INT_MAX)) |
4ef0d4d0 KS |
780 | return 0; |
781 | break; | |
782 | ||
c4a07a4c PE |
783 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR: |
784 | if (RANGED_INTEGERP (0, value, INT_MAX)) | |
4ef0d4d0 KS |
785 | break; |
786 | if (CONSP (value) | |
c4a07a4c PE |
787 | && RANGED_INTEGERP (0, XCAR (value), INT_MAX) |
788 | && RANGED_INTEGERP (0, XCDR (value), INT_MAX)) | |
4ef0d4d0 KS |
789 | break; |
790 | return 0; | |
791 | ||
792 | case IMAGE_ASCENT_VALUE: | |
793 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
794 | break; | |
13464394 | 795 | else if (RANGED_INTEGERP (0, value, 100)) |
4ef0d4d0 KS |
796 | break; |
797 | return 0; | |
798 | ||
799 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
13464394 PE |
800 | /* Unlike the other integer-related cases, this one does not |
801 | verify that VALUE fits in 'int'. This is because callers | |
802 | want EMACS_INT. */ | |
4ef0d4d0 KS |
803 | if (!INTEGERP (value) || XINT (value) < 0) |
804 | return 0; | |
805 | break; | |
806 | ||
807 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
808 | break; | |
809 | ||
810 | case IMAGE_FUNCTION_VALUE: | |
811 | value = indirect_function (value); | |
ca105506 | 812 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
813 | break; |
814 | return 0; | |
815 | ||
816 | case IMAGE_NUMBER_VALUE: | |
817 | if (!INTEGERP (value) && !FLOATP (value)) | |
818 | return 0; | |
819 | break; | |
820 | ||
821 | case IMAGE_INTEGER_VALUE: | |
13464394 | 822 | if (! TYPE_RANGED_INTEGERP (int, value)) |
4ef0d4d0 KS |
823 | return 0; |
824 | break; | |
825 | ||
826 | case IMAGE_BOOL_VALUE: | |
827 | if (!NILP (value) && !EQ (value, Qt)) | |
828 | return 0; | |
829 | break; | |
830 | ||
831 | default: | |
1088b922 | 832 | emacs_abort (); |
4ef0d4d0 KS |
833 | break; |
834 | } | |
835 | ||
836 | if (EQ (key, QCtype) && !EQ (type, value)) | |
837 | return 0; | |
838 | } | |
839 | ||
840 | /* Check that all mandatory fields are present. */ | |
841 | for (i = 0; i < nkeywords; ++i) | |
842 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
843 | return 0; | |
844 | ||
845 | return NILP (plist); | |
846 | } | |
847 | ||
848 | ||
849 | /* Return the value of KEY in image specification SPEC. Value is nil | |
578098f3 PE |
850 | if KEY is not present in SPEC. Set *FOUND depending on whether KEY |
851 | was found in SPEC. */ | |
4ef0d4d0 KS |
852 | |
853 | static Lisp_Object | |
578098f3 | 854 | image_spec_value (Lisp_Object spec, Lisp_Object key, bool *found) |
4ef0d4d0 KS |
855 | { |
856 | Lisp_Object tail; | |
857 | ||
a54e2c05 | 858 | eassert (valid_image_p (spec)); |
4ef0d4d0 KS |
859 | |
860 | for (tail = XCDR (spec); | |
861 | CONSP (tail) && CONSP (XCDR (tail)); | |
862 | tail = XCDR (XCDR (tail))) | |
863 | { | |
864 | if (EQ (XCAR (tail), key)) | |
865 | { | |
866 | if (found) | |
867 | *found = 1; | |
868 | return XCAR (XCDR (tail)); | |
869 | } | |
870 | } | |
871 | ||
872 | if (found) | |
873 | *found = 0; | |
874 | return Qnil; | |
875 | } | |
876 | ||
877 | ||
878 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
879 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
880 | PIXELS non-nil means return the size in pixels, otherwise return the | |
881 | size in canonical character units. | |
882 | FRAME is the frame on which the image will be displayed. FRAME nil | |
883 | or omitted means use the selected frame. */) | |
5842a27b | 884 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
885 | { |
886 | Lisp_Object size; | |
887 | ||
888 | size = Qnil; | |
889 | if (valid_image_p (spec)) | |
890 | { | |
7452b7bd | 891 | struct frame *f = decode_window_system_frame (frame); |
13464394 | 892 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
893 | struct image *img = IMAGE_FROM_ID (f, id); |
894 | int width = img->width + 2 * img->hmargin; | |
895 | int height = img->height + 2 * img->vmargin; | |
896 | ||
897 | if (NILP (pixels)) | |
898 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
899 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
900 | else | |
901 | size = Fcons (make_number (width), make_number (height)); | |
902 | } | |
903 | else | |
904 | error ("Invalid image specification"); | |
905 | ||
906 | return size; | |
907 | } | |
908 | ||
909 | ||
910 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
911 | doc: /* Return t if image SPEC has a mask bitmap. | |
912 | FRAME is the frame on which the image will be displayed. FRAME nil | |
913 | or omitted means use the selected frame. */) | |
5842a27b | 914 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
915 | { |
916 | Lisp_Object mask; | |
917 | ||
918 | mask = Qnil; | |
919 | if (valid_image_p (spec)) | |
920 | { | |
7452b7bd | 921 | struct frame *f = decode_window_system_frame (frame); |
13464394 | 922 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
923 | struct image *img = IMAGE_FROM_ID (f, id); |
924 | if (img->mask) | |
925 | mask = Qt; | |
926 | } | |
927 | else | |
928 | error ("Invalid image specification"); | |
929 | ||
930 | return mask; | |
931 | } | |
932 | ||
1546c559 JL |
933 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
934 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
935 | FRAME is the frame on which the image will be displayed. FRAME nil |
936 | or omitted means use the selected frame. */) | |
5842a27b | 937 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
938 | { |
939 | Lisp_Object ext; | |
940 | ||
941 | ext = Qnil; | |
942 | if (valid_image_p (spec)) | |
943 | { | |
7452b7bd | 944 | struct frame *f = decode_window_system_frame (frame); |
13464394 | 945 | ptrdiff_t id = lookup_image (f, spec); |
6ac3c7bb | 946 | struct image *img = IMAGE_FROM_ID (f, id); |
b50691aa | 947 | ext = img->lisp_data; |
6ac3c7bb KS |
948 | } |
949 | ||
950 | return ext; | |
951 | } | |
952 | ||
4ef0d4d0 KS |
953 | \f |
954 | /*********************************************************************** | |
955 | Image type independent image structures | |
956 | ***********************************************************************/ | |
957 | ||
11273115 | 958 | #define MAX_IMAGE_SIZE 10.0 |
4ef0d4d0 KS |
959 | /* Allocate and return a new image structure for image specification |
960 | SPEC. SPEC has a hash value of HASH. */ | |
961 | ||
962 | static struct image * | |
0de4bb68 | 963 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 | 964 | { |
23f86fce | 965 | struct image *img = xzalloc (sizeof *img); |
a2bc5bdd | 966 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 | 967 | |
a54e2c05 | 968 | eassert (valid_image_p (spec)); |
a2bc5bdd | 969 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 | 970 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
a54e2c05 | 971 | eassert (img->type != NULL); |
4ef0d4d0 | 972 | img->spec = spec; |
b50691aa | 973 | img->lisp_data = Qnil; |
4ef0d4d0 KS |
974 | img->ascent = DEFAULT_IMAGE_ASCENT; |
975 | img->hash = hash; | |
6ac3c7bb | 976 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
977 | return img; |
978 | } | |
979 | ||
980 | ||
981 | /* Free image IMG which was used on frame F, including its resources. */ | |
982 | ||
983 | static void | |
d3da34e0 | 984 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
985 | { |
986 | if (img) | |
987 | { | |
354884c4 | 988 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
989 | |
990 | /* Remove IMG from the hash table of its cache. */ | |
991 | if (img->prev) | |
992 | img->prev->next = img->next; | |
993 | else | |
994 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
995 | ||
996 | if (img->next) | |
997 | img->next->prev = img->prev; | |
998 | ||
999 | c->images[img->id] = NULL; | |
1000 | ||
587fd086 FP |
1001 | /* Windows NT redefines 'free', but in this file, we need to |
1002 | avoid the redefinition. */ | |
1003 | #ifdef WINDOWSNT | |
1004 | #undef free | |
1005 | #endif | |
4ef0d4d0 KS |
1006 | /* Free resources, then free IMG. */ |
1007 | img->type->free (f, img); | |
1008 | xfree (img); | |
1009 | } | |
1010 | } | |
1011 | ||
578098f3 | 1012 | /* Return true if the given widths and heights are valid for display. */ |
f1f25b99 | 1013 | |
578098f3 | 1014 | static bool |
d3da34e0 | 1015 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1016 | { |
7df4765a | 1017 | int w, h; |
f1f25b99 | 1018 | |
7df4765a | 1019 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1020 | return 0; |
1021 | ||
7df4765a | 1022 | if (INTEGERP (Vmax_image_size)) |
3f791afe PE |
1023 | return (width <= XINT (Vmax_image_size) |
1024 | && height <= XINT (Vmax_image_size)); | |
7df4765a KS |
1025 | else if (FLOATP (Vmax_image_size)) |
1026 | { | |
e5d76069 PE |
1027 | if (f != NULL) |
1028 | { | |
1029 | w = FRAME_PIXEL_WIDTH (f); | |
1030 | h = FRAME_PIXEL_HEIGHT (f); | |
1031 | } | |
1032 | else | |
1033 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
3f791afe PE |
1034 | return (width <= XFLOAT_DATA (Vmax_image_size) * w |
1035 | && height <= XFLOAT_DATA (Vmax_image_size) * h); | |
7df4765a KS |
1036 | } |
1037 | else | |
1038 | return 1; | |
f1f25b99 | 1039 | } |
4ef0d4d0 KS |
1040 | |
1041 | /* Prepare image IMG for display on frame F. Must be called before | |
1042 | drawing an image. */ | |
1043 | ||
1044 | void | |
d3da34e0 | 1045 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 | 1046 | { |
4ef0d4d0 | 1047 | /* We're about to display IMG, so set its timestamp to `now'. */ |
43aac990 | 1048 | img->timestamp = current_timespec (); |
4ef0d4d0 KS |
1049 | |
1050 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1051 | type dependent loader function. */ | |
1052 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
578098f3 | 1053 | img->load_failed_p = ! img->type->load (f, img); |
c7fea325 | 1054 | |
547c9269 YM |
1055 | #ifdef HAVE_X_WINDOWS |
1056 | if (!img->load_failed_p) | |
1057 | { | |
1058 | block_input (); | |
1059 | image_sync_to_pixmaps (f, img); | |
1060 | unblock_input (); | |
1061 | } | |
1062 | #endif | |
4ef0d4d0 KS |
1063 | } |
1064 | ||
1065 | ||
1066 | /* Value is the number of pixels for the ascent of image IMG when | |
1067 | drawn in face FACE. */ | |
1068 | ||
1069 | int | |
d3da34e0 | 1070 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1071 | { |
1938bc36 | 1072 | int height; |
4ef0d4d0 KS |
1073 | int ascent; |
1074 | ||
1938bc36 KS |
1075 | if (slice->height == img->height) |
1076 | height = img->height + img->vmargin; | |
1077 | else if (slice->y == 0) | |
1078 | height = slice->height + img->vmargin; | |
1079 | else | |
1080 | height = slice->height; | |
1081 | ||
4ef0d4d0 KS |
1082 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1083 | { | |
1084 | if (face->font) | |
1085 | { | |
1086 | #ifdef HAVE_NTGUI | |
1087 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1088 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1089 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1090 | #else |
1091 | /* This expression is arranged so that if the image can't be | |
1092 | exactly centered, it will be moved slightly up. This is | |
1093 | because a typical font is `top-heavy' (due to the presence | |
1094 | uppercase letters), so the image placement should err towards | |
1095 | being top-heavy too. It also just generally looks better. */ | |
5e617bc2 JB |
1096 | ascent = (height + FONT_BASE (face->font) |
1097 | - FONT_DESCENT (face->font) + 1) / 2; | |
4ef0d4d0 KS |
1098 | #endif /* HAVE_NTGUI */ |
1099 | } | |
1100 | else | |
1101 | ascent = height / 2; | |
1102 | } | |
1103 | else | |
13464394 | 1104 | ascent = height * (img->ascent / 100.0); |
4ef0d4d0 KS |
1105 | |
1106 | return ascent; | |
1107 | } | |
1108 | ||
1109 | \f | |
1110 | /* Image background colors. */ | |
1111 | ||
1112 | /* Find the "best" corner color of a bitmap. | |
1113 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1114 | ||
1115 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1116 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1117 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1118 | { |
f0c77cd1 | 1119 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1120 | int i, best_count; |
1121 | ||
6ac3c7bb KS |
1122 | if (corners && corners[BOT_CORNER] >= 0) |
1123 | { | |
1124 | /* Get the colors at the corner_pixels of ximg. */ | |
1125 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1126 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1127 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1128 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1129 | } | |
1130 | else | |
1131 | { | |
1132 | /* Get the colors at the corner_pixels of ximg. */ | |
1133 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1134 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1135 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1136 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1137 | } | |
4ef0d4d0 KS |
1138 | /* Choose the most frequently found color as background. */ |
1139 | for (i = best_count = 0; i < 4; ++i) | |
1140 | { | |
1141 | int j, n; | |
1142 | ||
1143 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1144 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1145 | ++n; |
1146 | ||
1147 | if (n > best_count) | |
6ac3c7bb | 1148 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1149 | } |
1150 | ||
1151 | return best; | |
1152 | } | |
1153 | ||
1154 | /* Portability macros */ | |
1155 | ||
1156 | #ifdef HAVE_NTGUI | |
1157 | ||
4ef0d4d0 KS |
1158 | #define Free_Pixmap(display, pixmap) \ |
1159 | DeleteObject (pixmap) | |
1160 | ||
edfda783 AR |
1161 | #elif defined (HAVE_NS) |
1162 | ||
edfda783 | 1163 | #define Free_Pixmap(display, pixmap) \ |
ed3751c8 | 1164 | ns_release_object (pixmap) |
edfda783 | 1165 | |
4ef0d4d0 KS |
1166 | #else |
1167 | ||
4ef0d4d0 KS |
1168 | #define Free_Pixmap(display, pixmap) \ |
1169 | XFreePixmap (display, pixmap) | |
1170 | ||
edfda783 | 1171 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1172 | |
1173 | ||
1174 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1175 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1176 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1177 | use for the heuristic. */ |
4ef0d4d0 KS |
1178 | |
1179 | RGB_PIXEL_COLOR | |
d3da34e0 | 1180 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1181 | { |
1182 | if (! img->background_valid) | |
1183 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1184 | { | |
578098f3 | 1185 | bool free_ximg = !ximg; |
4ef0d4d0 KS |
1186 | #ifdef HAVE_NTGUI |
1187 | HGDIOBJ prev; | |
1188 | #endif /* HAVE_NTGUI */ | |
1189 | ||
1190 | if (free_ximg) | |
547c9269 | 1191 | ximg = image_get_x_image_or_dc (f, img, 0, &prev); |
4ef0d4d0 | 1192 | |
6ac3c7bb | 1193 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1194 | |
1195 | if (free_ximg) | |
547c9269 | 1196 | image_unget_x_image_or_dc (img, 0, ximg, prev); |
1f026899 | 1197 | |
4ef0d4d0 KS |
1198 | img->background_valid = 1; |
1199 | } | |
1200 | ||
1201 | return img->background; | |
1202 | } | |
1203 | ||
1204 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1205 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1206 | existing XImage object to use for the heuristic. */ | |
1207 | ||
1208 | int | |
d3da34e0 | 1209 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1210 | { |
1211 | if (! img->background_transparent_valid) | |
1212 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1213 | { | |
1214 | if (img->mask) | |
1215 | { | |
578098f3 | 1216 | bool free_mask = !mask; |
4ef0d4d0 KS |
1217 | #ifdef HAVE_NTGUI |
1218 | HGDIOBJ prev; | |
1219 | #endif /* HAVE_NTGUI */ | |
1220 | ||
1221 | if (free_mask) | |
547c9269 | 1222 | mask = image_get_x_image_or_dc (f, img, 1, &prev); |
4ef0d4d0 KS |
1223 | |
1224 | img->background_transparent | |
6ac3c7bb | 1225 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1226 | |
1227 | if (free_mask) | |
547c9269 | 1228 | image_unget_x_image_or_dc (img, 1, mask, prev); |
4ef0d4d0 KS |
1229 | } |
1230 | else | |
1231 | img->background_transparent = 0; | |
1232 | ||
1233 | img->background_transparent_valid = 1; | |
1234 | } | |
1235 | ||
1236 | return img->background_transparent; | |
1237 | } | |
1238 | ||
da11196a DA |
1239 | #if defined (HAVE_PNG) || defined (HAVE_NS) \ |
1240 | || defined (HAVE_IMAGEMAGICK) || defined (HAVE_RSVG) | |
1241 | ||
f62bc934 PE |
1242 | /* Store F's background color into *BGCOLOR. */ |
1243 | static void | |
1244 | x_query_frame_background_color (struct frame *f, XColor *bgcolor) | |
1245 | { | |
1246 | #ifndef HAVE_NS | |
1247 | bgcolor->pixel = FRAME_BACKGROUND_PIXEL (f); | |
1248 | x_query_color (f, bgcolor); | |
1249 | #else | |
1250 | ns_query_color (FRAME_BACKGROUND_COLOR (f), bgcolor, 1); | |
1251 | #endif | |
1252 | } | |
1253 | ||
da11196a DA |
1254 | #endif /* HAVE_PNG || HAVE_NS || HAVE_IMAGEMAGICK || HAVE_RSVG */ |
1255 | ||
4ef0d4d0 KS |
1256 | /*********************************************************************** |
1257 | Helper functions for X image types | |
1258 | ***********************************************************************/ | |
1259 | ||
547c9269 YM |
1260 | /* Clear X resources of image IMG on frame F according to FLAGS. |
1261 | FLAGS is bitwise-or of the following masks: | |
1262 | CLEAR_IMAGE_PIXMAP free the pixmap if any. | |
1263 | CLEAR_IMAGE_MASK means clear the mask pixmap if any. | |
1264 | CLEAR_IMAGE_COLORS means free colors allocated for the image, if | |
1265 | any. */ | |
1266 | ||
1267 | #define CLEAR_IMAGE_PIXMAP (1 << 0) | |
1268 | #define CLEAR_IMAGE_MASK (1 << 1) | |
1269 | #define CLEAR_IMAGE_COLORS (1 << 2) | |
4ef0d4d0 KS |
1270 | |
1271 | static void | |
547c9269 | 1272 | x_clear_image_1 (struct frame *f, struct image *img, int flags) |
4ef0d4d0 | 1273 | { |
547c9269 | 1274 | if (flags & CLEAR_IMAGE_PIXMAP) |
4ef0d4d0 | 1275 | { |
547c9269 YM |
1276 | if (img->pixmap) |
1277 | { | |
1278 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1279 | img->pixmap = NO_PIXMAP; | |
1280 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ | |
1281 | img->background_valid = 0; | |
1282 | } | |
1283 | #ifdef HAVE_X_WINDOWS | |
1284 | if (img->ximg) | |
1285 | { | |
1286 | x_destroy_x_image (img->ximg); | |
1287 | img->ximg = NULL; | |
1288 | img->background_valid = 0; | |
1289 | } | |
1290 | #endif | |
4ef0d4d0 KS |
1291 | } |
1292 | ||
547c9269 | 1293 | if (flags & CLEAR_IMAGE_MASK) |
4ef0d4d0 | 1294 | { |
547c9269 YM |
1295 | if (img->mask) |
1296 | { | |
1297 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1298 | img->mask = NO_PIXMAP; | |
1299 | img->background_transparent_valid = 0; | |
1300 | } | |
1301 | #ifdef HAVE_X_WINDOWS | |
1302 | if (img->mask_img) | |
1303 | { | |
1304 | x_destroy_x_image (img->mask_img); | |
1305 | img->mask_img = NULL; | |
1306 | img->background_transparent_valid = 0; | |
1307 | } | |
1308 | #endif | |
4ef0d4d0 KS |
1309 | } |
1310 | ||
547c9269 | 1311 | if ((flags & CLEAR_IMAGE_COLORS) && img->ncolors) |
4ef0d4d0 | 1312 | { |
4ef0d4d0 KS |
1313 | /* W32_TODO: color table support. */ |
1314 | #ifdef HAVE_X_WINDOWS | |
1315 | x_free_colors (f, img->colors, img->ncolors); | |
1316 | #endif /* HAVE_X_WINDOWS */ | |
1317 | xfree (img->colors); | |
1318 | img->colors = NULL; | |
1319 | img->ncolors = 0; | |
1320 | } | |
c7fea325 | 1321 | |
4ef0d4d0 KS |
1322 | } |
1323 | ||
1324 | /* Free X resources of image IMG which is used on frame F. */ | |
1325 | ||
1326 | static void | |
d3da34e0 | 1327 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1328 | { |
4d7e6e51 | 1329 | block_input (); |
547c9269 YM |
1330 | x_clear_image_1 (f, img, |
1331 | CLEAR_IMAGE_PIXMAP | CLEAR_IMAGE_MASK | CLEAR_IMAGE_COLORS); | |
4d7e6e51 | 1332 | unblock_input (); |
4ef0d4d0 KS |
1333 | } |
1334 | ||
1335 | ||
1336 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1337 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1338 | IMG->colors, so that it can be freed again. Value is the pixel | |
1339 | color. */ | |
1340 | ||
1341 | static unsigned long | |
d3da34e0 JB |
1342 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1343 | unsigned long dflt) | |
4ef0d4d0 KS |
1344 | { |
1345 | XColor color; | |
1346 | unsigned long result; | |
1347 | ||
a54e2c05 | 1348 | eassert (STRINGP (color_name)); |
4ef0d4d0 | 1349 | |
3f791afe PE |
1350 | if (x_defined_color (f, SSDATA (color_name), &color, 1) |
1351 | && img->ncolors < min (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *img->colors, | |
1352 | INT_MAX)) | |
4ef0d4d0 KS |
1353 | { |
1354 | /* This isn't called frequently so we get away with simply | |
1355 | reallocating the color vector to the needed size, here. */ | |
ddff3151 | 1356 | ptrdiff_t ncolors = img->ncolors + 1; |
38182d90 | 1357 | img->colors = xrealloc (img->colors, ncolors * sizeof *img->colors); |
ddff3151 PE |
1358 | img->colors[ncolors - 1] = color.pixel; |
1359 | img->ncolors = ncolors; | |
4ef0d4d0 KS |
1360 | result = color.pixel; |
1361 | } | |
1362 | else | |
1363 | result = dflt; | |
1364 | ||
1365 | return result; | |
1366 | } | |
1367 | ||
1368 | ||
1369 | \f | |
1370 | /*********************************************************************** | |
1371 | Image Cache | |
1372 | ***********************************************************************/ | |
1373 | ||
f57e2426 | 1374 | static void cache_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
1375 | |
1376 | /* Return a new, initialized image cache that is allocated from the | |
1377 | heap. Call free_image_cache to free an image cache. */ | |
1378 | ||
1379 | struct image_cache * | |
d3da34e0 | 1380 | make_image_cache (void) |
4ef0d4d0 | 1381 | { |
9c253307 DA |
1382 | struct image_cache *c = xmalloc (sizeof *c); |
1383 | ||
1384 | c->size = 50; | |
1385 | c->used = c->refcount = 0; | |
1386 | c->images = xmalloc (c->size * sizeof *c->images); | |
1387 | c->buckets = xzalloc (IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets); | |
4ef0d4d0 KS |
1388 | return c; |
1389 | } | |
1390 | ||
1391 | ||
d3c35d17 CY |
1392 | /* Find an image matching SPEC in the cache, and return it. If no |
1393 | image is found, return NULL. */ | |
1394 | static struct image * | |
0de4bb68 | 1395 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1396 | { |
91be6b66 | 1397 | struct image *img; |
354884c4 | 1398 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1399 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1400 | ||
8198352b CY |
1401 | if (!c) return NULL; |
1402 | ||
d3c35d17 CY |
1403 | /* If the image spec does not specify a background color, the cached |
1404 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1405 | The foreground color must also match, for the sake of monochrome |
1406 | images. | |
1407 | ||
1408 | In fact, we could ignore the foreground color matching condition | |
1409 | for color images, or if the image spec specifies :foreground; | |
1410 | similarly we could ignore the background color matching condition | |
1411 | for formats that don't use transparency (such as jpeg), or if the | |
1412 | image spec specifies :background. However, the extra memory | |
1413 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1414 | |
483e7ae0 | 1415 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1416 | if (img->hash == hash |
1417 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1418 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1419 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1420 | break; |
1421 | return img; | |
1422 | } | |
1423 | ||
1424 | ||
1425 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1426 | ||
1427 | static void | |
d3da34e0 | 1428 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1429 | { |
1430 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1431 | if (img) | |
be3faa80 CY |
1432 | { |
1433 | free_image (f, img); | |
1434 | /* As display glyphs may still be referring to the image ID, we | |
1435 | must garbage the frame (Bug#6426). */ | |
1436 | SET_FRAME_GARBAGED (f); | |
1437 | } | |
483e7ae0 CY |
1438 | } |
1439 | ||
1440 | ||
4ef0d4d0 KS |
1441 | /* Free image cache of frame F. Be aware that X frames share images |
1442 | caches. */ | |
1443 | ||
1444 | void | |
d3da34e0 | 1445 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1446 | { |
354884c4 | 1447 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1448 | if (c) |
1449 | { | |
13464394 | 1450 | ptrdiff_t i; |
4ef0d4d0 KS |
1451 | |
1452 | /* Cache should not be referenced by any frame when freed. */ | |
a54e2c05 | 1453 | eassert (c->refcount == 0); |
4ef0d4d0 KS |
1454 | |
1455 | for (i = 0; i < c->used; ++i) | |
1456 | free_image (f, c->images[i]); | |
1457 | xfree (c->images); | |
1458 | xfree (c->buckets); | |
1459 | xfree (c); | |
354884c4 | 1460 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1461 | } |
1462 | } | |
1463 | ||
1464 | ||
a2bc5bdd SM |
1465 | /* Clear image cache of frame F. FILTER=t means free all images. |
1466 | FILTER=nil means clear only images that haven't been | |
1467 | displayed for some time. | |
1468 | Else, only free the images which have FILTER in their `dependencies'. | |
1469 | Should be called from time to time to reduce the number of loaded images. | |
1470 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1471 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1472 | |
ce0ad53d | 1473 | static void |
a2bc5bdd | 1474 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1475 | { |
354884c4 | 1476 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1477 | |
98fe5161 | 1478 | if (c) |
4ef0d4d0 | 1479 | { |
13464394 | 1480 | ptrdiff_t i, nfreed = 0; |
4ef0d4d0 KS |
1481 | |
1482 | /* Block input so that we won't be interrupted by a SIGIO | |
1483 | while being in an inconsistent state. */ | |
4d7e6e51 | 1484 | block_input (); |
4ef0d4d0 | 1485 | |
98fe5161 CY |
1486 | if (!NILP (filter)) |
1487 | { | |
1488 | /* Filter image cache. */ | |
1489 | for (i = 0; i < c->used; ++i) | |
1490 | { | |
1491 | struct image *img = c->images[i]; | |
1492 | if (img && (EQ (Qt, filter) | |
1493 | || !NILP (Fmember (filter, img->dependencies)))) | |
1494 | { | |
1495 | free_image (f, img); | |
1496 | ++nfreed; | |
1497 | } | |
1498 | } | |
1499 | } | |
1500 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1501 | { |
98fe5161 | 1502 | /* Free cache based on timestamp. */ |
43aac990 | 1503 | struct timespec old, t; |
d35af63c | 1504 | double delay; |
13464394 | 1505 | ptrdiff_t nimages = 0; |
98fe5161 CY |
1506 | |
1507 | for (i = 0; i < c->used; ++i) | |
1508 | if (c->images[i]) | |
1509 | nimages++; | |
1510 | ||
1511 | /* If the number of cached images has grown unusually large, | |
1512 | decrease the cache eviction delay (Bug#6230). */ | |
13464394 | 1513 | delay = XINT (Vimage_cache_eviction_delay); |
98fe5161 | 1514 | if (nimages > 40) |
13464394 PE |
1515 | delay = 1600 * delay / nimages / nimages; |
1516 | delay = max (delay, 1); | |
98fe5161 | 1517 | |
43aac990 PE |
1518 | t = current_timespec (); |
1519 | old = timespec_sub (t, dtotimespec (delay)); | |
98fe5161 CY |
1520 | |
1521 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1522 | { |
98fe5161 | 1523 | struct image *img = c->images[i]; |
43aac990 | 1524 | if (img && timespec_cmp (img->timestamp, old) < 0) |
98fe5161 CY |
1525 | { |
1526 | free_image (f, img); | |
1527 | ++nfreed; | |
1528 | } | |
4ef0d4d0 KS |
1529 | } |
1530 | } | |
1531 | ||
1532 | /* We may be clearing the image cache because, for example, | |
1533 | Emacs was iconified for a longer period of time. In that | |
1534 | case, current matrices may still contain references to | |
1535 | images freed above. So, clear these matrices. */ | |
1536 | if (nfreed) | |
1537 | { | |
1538 | Lisp_Object tail, frame; | |
1539 | ||
1540 | FOR_EACH_FRAME (tail, frame) | |
1541 | { | |
6ae141d6 PE |
1542 | struct frame *fr = XFRAME (frame); |
1543 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1544 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1545 | } |
1546 | ||
94ae2ad4 | 1547 | windows_or_buffers_changed = 19; |
4ef0d4d0 KS |
1548 | } |
1549 | ||
4d7e6e51 | 1550 | unblock_input (); |
4ef0d4d0 KS |
1551 | } |
1552 | } | |
1553 | ||
354884c4 | 1554 | void |
a2bc5bdd | 1555 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1556 | { |
1557 | /* FIXME: We want to do | |
1558 | * struct terminal *t; | |
1559 | * for (t = terminal_list; t; t = t->next_terminal) | |
1560 | * clear_image_cache (t, filter); */ | |
1561 | Lisp_Object tail, frame; | |
1562 | FOR_EACH_FRAME (tail, frame) | |
1563 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1564 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1565 | } |
4ef0d4d0 KS |
1566 | |
1567 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1568 | 0, 1, 0, | |
a2bc5bdd SM |
1569 | doc: /* Clear the image cache. |
1570 | FILTER nil or a frame means clear all images in the selected frame. | |
1571 | FILTER t means clear the image caches of all frames. | |
1572 | Anything else, means only clear those images which refer to FILTER, | |
1573 | which is then usually a filename. */) | |
5842a27b | 1574 | (Lisp_Object filter) |
4ef0d4d0 | 1575 | { |
a2bc5bdd SM |
1576 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1577 | clear_image_caches (filter); | |
4ef0d4d0 | 1578 | else |
7452b7bd | 1579 | clear_image_cache (decode_window_system_frame (filter), Qt); |
4ef0d4d0 KS |
1580 | |
1581 | return Qnil; | |
1582 | } | |
1583 | ||
1584 | ||
110683ad | 1585 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1586 | 1, 2, 0, |
8bfcc21a | 1587 | doc: /* Flush the image with specification SPEC on frame FRAME. |
110683ad CY |
1588 | This removes the image from the Emacs image cache. If SPEC specifies |
1589 | an image file, the next redisplay of this image will read from the | |
1590 | current contents of that file. | |
1591 | ||
483e7ae0 CY |
1592 | FRAME nil or omitted means use the selected frame. |
1593 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1594 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1595 | { |
1596 | if (!valid_image_p (spec)) | |
1597 | error ("Invalid image specification"); | |
1598 | ||
1599 | if (EQ (frame, Qt)) | |
1600 | { | |
1601 | Lisp_Object tail; | |
1602 | FOR_EACH_FRAME (tail, frame) | |
1603 | { | |
1604 | struct frame *f = XFRAME (frame); | |
1605 | if (FRAME_WINDOW_P (f)) | |
1606 | uncache_image (f, spec); | |
1607 | } | |
1608 | } | |
1609 | else | |
7452b7bd | 1610 | uncache_image (decode_window_system_frame (frame), spec); |
483e7ae0 CY |
1611 | |
1612 | return Qnil; | |
1613 | } | |
1614 | ||
1615 | ||
4ef0d4d0 KS |
1616 | /* Compute masks and transform image IMG on frame F, as specified |
1617 | by the image's specification, */ | |
1618 | ||
1619 | static void | |
d3da34e0 | 1620 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1621 | { |
1622 | /* Manipulation of the image's mask. */ | |
1623 | if (img->pixmap) | |
1624 | { | |
1625 | Lisp_Object conversion, spec; | |
1626 | Lisp_Object mask; | |
1627 | ||
1628 | spec = img->spec; | |
1629 | ||
1630 | /* `:heuristic-mask t' | |
1631 | `:mask heuristic' | |
1632 | means build a mask heuristically. | |
1633 | `:heuristic-mask (R G B)' | |
1634 | `:mask (heuristic (R G B))' | |
1635 | means build a mask from color (R G B) in the | |
1636 | image. | |
1637 | `:mask nil' | |
1638 | means remove a mask, if any. */ | |
1639 | ||
1640 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1641 | if (!NILP (mask)) | |
1642 | x_build_heuristic_mask (f, img, mask); | |
1643 | else | |
1644 | { | |
578098f3 | 1645 | bool found_p; |
4ef0d4d0 KS |
1646 | |
1647 | mask = image_spec_value (spec, QCmask, &found_p); | |
1648 | ||
1649 | if (EQ (mask, Qheuristic)) | |
1650 | x_build_heuristic_mask (f, img, Qt); | |
1651 | else if (CONSP (mask) | |
1652 | && EQ (XCAR (mask), Qheuristic)) | |
1653 | { | |
1654 | if (CONSP (XCDR (mask))) | |
1655 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1656 | else | |
1657 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1658 | } | |
1659 | else if (NILP (mask) && found_p && img->mask) | |
547c9269 | 1660 | x_clear_image_1 (f, img, CLEAR_IMAGE_MASK); |
4ef0d4d0 KS |
1661 | } |
1662 | ||
1663 | ||
1664 | /* Should we apply an image transformation algorithm? */ | |
1665 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1666 | if (EQ (conversion, Qdisabled)) | |
1667 | x_disable_image (f, img); | |
1668 | else if (EQ (conversion, Qlaplace)) | |
1669 | x_laplace (f, img); | |
1670 | else if (EQ (conversion, Qemboss)) | |
1671 | x_emboss (f, img); | |
1672 | else if (CONSP (conversion) | |
1673 | && EQ (XCAR (conversion), Qedge_detection)) | |
1674 | { | |
1675 | Lisp_Object tem; | |
1676 | tem = XCDR (conversion); | |
1677 | if (CONSP (tem)) | |
1678 | x_edge_detection (f, img, | |
1679 | Fplist_get (tem, QCmatrix), | |
1680 | Fplist_get (tem, QCcolor_adjustment)); | |
1681 | } | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | ||
1686 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1687 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1688 | ||
13464394 | 1689 | ptrdiff_t |
d3da34e0 | 1690 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1691 | { |
4ef0d4d0 | 1692 | struct image *img; |
0de4bb68 | 1693 | EMACS_UINT hash; |
4ef0d4d0 KS |
1694 | |
1695 | /* F must be a window-system frame, and SPEC must be a valid image | |
1696 | specification. */ | |
a54e2c05 DA |
1697 | eassert (FRAME_WINDOW_P (f)); |
1698 | eassert (valid_image_p (spec)); | |
4ef0d4d0 | 1699 | |
4ef0d4d0 KS |
1700 | /* Look up SPEC in the hash table of the image cache. */ |
1701 | hash = sxhash (spec, 0); | |
d3c35d17 | 1702 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1703 | if (img && img->load_failed_p) |
1704 | { | |
1705 | free_image (f, img); | |
1706 | img = NULL; | |
1707 | } | |
1708 | ||
4ef0d4d0 KS |
1709 | /* If not found, create a new image and cache it. */ |
1710 | if (img == NULL) | |
1711 | { | |
4d7e6e51 | 1712 | block_input (); |
4ef0d4d0 KS |
1713 | img = make_image (spec, hash); |
1714 | cache_image (f, img); | |
578098f3 | 1715 | img->load_failed_p = ! img->type->load (f, img); |
c5b8e0ea YM |
1716 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1717 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1718 | |
1719 | /* If we can't load the image, and we don't have a width and | |
1720 | height, use some arbitrary width and height so that we can | |
1721 | draw a rectangle for it. */ | |
1722 | if (img->load_failed_p) | |
1723 | { | |
1724 | Lisp_Object value; | |
1725 | ||
1726 | value = image_spec_value (spec, QCwidth, NULL); | |
1727 | img->width = (INTEGERP (value) | |
1728 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1729 | value = image_spec_value (spec, QCheight, NULL); | |
1730 | img->height = (INTEGERP (value) | |
1731 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1732 | } | |
1733 | else | |
1734 | { | |
1735 | /* Handle image type independent image attributes | |
1736 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1737 | `:background COLOR'. */ | |
1738 | Lisp_Object ascent, margin, relief, bg; | |
d311d28c | 1739 | int relief_bound; |
4ef0d4d0 KS |
1740 | |
1741 | ascent = image_spec_value (spec, QCascent, NULL); | |
1742 | if (INTEGERP (ascent)) | |
1743 | img->ascent = XFASTINT (ascent); | |
1744 | else if (EQ (ascent, Qcenter)) | |
1745 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1746 | ||
1747 | margin = image_spec_value (spec, QCmargin, NULL); | |
13464394 | 1748 | if (INTEGERP (margin)) |
4ef0d4d0 | 1749 | img->vmargin = img->hmargin = XFASTINT (margin); |
13464394 | 1750 | else if (CONSP (margin)) |
4ef0d4d0 | 1751 | { |
13464394 PE |
1752 | img->hmargin = XFASTINT (XCAR (margin)); |
1753 | img->vmargin = XFASTINT (XCDR (margin)); | |
4ef0d4d0 KS |
1754 | } |
1755 | ||
1756 | relief = image_spec_value (spec, QCrelief, NULL); | |
d311d28c PE |
1757 | relief_bound = INT_MAX - max (img->hmargin, img->vmargin); |
1758 | if (RANGED_INTEGERP (- relief_bound, relief, relief_bound)) | |
4ef0d4d0 KS |
1759 | { |
1760 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1761 | img->hmargin += eabs (img->relief); |
1762 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1763 | } |
1764 | ||
1765 | if (! img->background_valid) | |
1766 | { | |
1767 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1768 | if (!NILP (bg)) | |
1769 | { | |
1770 | img->background | |
1771 | = x_alloc_image_color (f, img, bg, | |
1772 | FRAME_BACKGROUND_PIXEL (f)); | |
1773 | img->background_valid = 1; | |
1774 | } | |
1775 | } | |
1776 | ||
1777 | /* Do image transformations and compute masks, unless we | |
1778 | don't have the image yet. */ | |
1779 | if (!EQ (*img->type->type, Qpostscript)) | |
1780 | postprocess_image (f, img); | |
1781 | } | |
1782 | ||
4d7e6e51 | 1783 | unblock_input (); |
4ef0d4d0 KS |
1784 | } |
1785 | ||
1786 | /* We're using IMG, so set its timestamp to `now'. */ | |
43aac990 | 1787 | img->timestamp = current_timespec (); |
4ef0d4d0 | 1788 | |
4ef0d4d0 KS |
1789 | /* Value is the image id. */ |
1790 | return img->id; | |
1791 | } | |
1792 | ||
1793 | ||
1794 | /* Cache image IMG in the image cache of frame F. */ | |
1795 | ||
1796 | static void | |
d3da34e0 | 1797 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1798 | { |
354884c4 | 1799 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 | 1800 | ptrdiff_t i; |
4ef0d4d0 KS |
1801 | |
1802 | /* Find a free slot in c->images. */ | |
1803 | for (i = 0; i < c->used; ++i) | |
1804 | if (c->images[i] == NULL) | |
1805 | break; | |
1806 | ||
1807 | /* If no free slot found, maybe enlarge c->images. */ | |
1808 | if (i == c->used && c->used == c->size) | |
a69fbedb | 1809 | c->images = xpalloc (c->images, &c->size, 1, -1, sizeof *c->images); |
4ef0d4d0 KS |
1810 | |
1811 | /* Add IMG to c->images, and assign IMG an id. */ | |
1812 | c->images[i] = img; | |
1813 | img->id = i; | |
1814 | if (i == c->used) | |
1815 | ++c->used; | |
1816 | ||
1817 | /* Add IMG to the cache's hash table. */ | |
1818 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1819 | img->next = c->buckets[i]; | |
1820 | if (img->next) | |
1821 | img->next->prev = img; | |
1822 | img->prev = NULL; | |
1823 | c->buckets[i] = img; | |
1824 | } | |
4ef0d4d0 KS |
1825 | \f |
1826 | /*********************************************************************** | |
9e2a2647 | 1827 | X / NS / W32 support code |
4ef0d4d0 KS |
1828 | ***********************************************************************/ |
1829 | ||
0fda9b75 | 1830 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
1831 | |
1832 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1833 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1834 | |
1835 | /* Macro for loading those image functions from the library. */ | |
1836 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1837 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1838 | if (!fn_##func) return 0; \ | |
1839 | } | |
1840 | ||
0fda9b75 | 1841 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 1842 | |
578098f3 | 1843 | /* Return true if XIMG's size WIDTH x HEIGHT doesn't break the |
476371c4 | 1844 | windowing system. |
ca4aa935 PE |
1845 | WIDTH and HEIGHT must both be positive. |
1846 | If XIMG is null, assume it is a bitmap. */ | |
578098f3 | 1847 | static bool |
ca4aa935 PE |
1848 | x_check_image_size (XImagePtr ximg, int width, int height) |
1849 | { | |
476371c4 | 1850 | #ifdef HAVE_X_WINDOWS |
ca4aa935 PE |
1851 | /* Respect Xlib's limits: it cannot deal with images that have more |
1852 | than INT_MAX (and/or UINT_MAX) bytes. And respect Emacs's limits | |
476371c4 | 1853 | of PTRDIFF_MAX (and/or SIZE_MAX) bytes for any object. */ |
ca4aa935 PE |
1854 | enum |
1855 | { | |
1856 | XLIB_BYTES_MAX = min (INT_MAX, UINT_MAX), | |
1857 | X_IMAGE_BYTES_MAX = min (XLIB_BYTES_MAX, min (PTRDIFF_MAX, SIZE_MAX)) | |
1858 | }; | |
1859 | ||
1860 | int bitmap_pad, depth, bytes_per_line; | |
1861 | if (ximg) | |
1862 | { | |
1863 | bitmap_pad = ximg->bitmap_pad; | |
1864 | depth = ximg->depth; | |
1865 | bytes_per_line = ximg->bytes_per_line; | |
1866 | } | |
1867 | else | |
1868 | { | |
1869 | bitmap_pad = 8; | |
1870 | depth = 1; | |
1871 | bytes_per_line = (width >> 3) + ((width & 7) != 0); | |
1872 | } | |
1873 | return (width <= (INT_MAX - (bitmap_pad - 1)) / depth | |
1874 | && height <= X_IMAGE_BYTES_MAX / bytes_per_line); | |
476371c4 PE |
1875 | #else |
1876 | /* FIXME: Implement this check for the HAVE_NS and HAVE_NTGUI cases. | |
1877 | For now, assume that every image size is allowed on these systems. */ | |
1878 | return 1; | |
1879 | #endif | |
ca4aa935 | 1880 | } |
4ef0d4d0 KS |
1881 | |
1882 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1883 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1884 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1885 | via xmalloc. Print error messages via image_error if an error | |
578098f3 | 1886 | occurs. Value is true if successful. |
4ef0d4d0 KS |
1887 | |
1888 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1889 | should indicate the bit depth of the image. */ | |
1890 | ||
578098f3 | 1891 | static bool |
d3da34e0 JB |
1892 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1893 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1894 | { |
1895 | #ifdef HAVE_X_WINDOWS | |
1896 | Display *display = FRAME_X_DISPLAY (f); | |
1897 | Window window = FRAME_X_WINDOW (f); | |
1898 | Screen *screen = FRAME_X_SCREEN (f); | |
1899 | ||
4d7e6e51 | 1900 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
1901 | |
1902 | if (depth <= 0) | |
1903 | depth = DefaultDepthOfScreen (screen); | |
1904 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1905 | depth, ZPixmap, 0, NULL, width, height, | |
1906 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1907 | if (*ximg == NULL) | |
1908 | { | |
1909 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1910 | return 0; | |
1911 | } | |
1912 | ||
ca4aa935 PE |
1913 | if (! x_check_image_size (*ximg, width, height)) |
1914 | { | |
1915 | x_destroy_x_image (*ximg); | |
1916 | *ximg = NULL; | |
1917 | image_error ("Image too large (%dx%d)", | |
1918 | make_number (width), make_number (height)); | |
1919 | return 0; | |
1920 | } | |
1921 | ||
4ef0d4d0 | 1922 | /* Allocate image raster. */ |
c1ade6f7 | 1923 | (*ximg)->data = xmalloc_atomic ((*ximg)->bytes_per_line * height); |
4ef0d4d0 KS |
1924 | |
1925 | /* Allocate a pixmap of the same size. */ | |
1926 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1927 | if (*pixmap == NO_PIXMAP) | |
1928 | { | |
1929 | x_destroy_x_image (*ximg); | |
1930 | *ximg = NULL; | |
1931 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1932 | return 0; | |
1933 | } | |
1934 | ||
1935 | return 1; | |
1936 | #endif /* HAVE_X_WINDOWS */ | |
1937 | ||
1938 | #ifdef HAVE_NTGUI | |
1939 | ||
1940 | BITMAPINFOHEADER *header; | |
1941 | HDC hdc; | |
1942 | int scanline_width_bits; | |
1943 | int remainder; | |
1944 | int palette_colors = 0; | |
1945 | ||
1946 | if (depth == 0) | |
1947 | depth = 24; | |
1948 | ||
1949 | if (depth != 1 && depth != 4 && depth != 8 | |
1950 | && depth != 16 && depth != 24 && depth != 32) | |
1951 | { | |
1952 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
1953 | return 0; | |
1954 | } | |
1955 | ||
1956 | scanline_width_bits = width * depth; | |
1957 | remainder = scanline_width_bits % 32; | |
1958 | ||
1959 | if (remainder) | |
1960 | scanline_width_bits += 32 - remainder; | |
1961 | ||
1962 | /* Bitmaps with a depth less than 16 need a palette. */ | |
1963 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
1964 | if (depth < 16) | |
657d08d3 | 1965 | palette_colors = 1 << (depth - 1); |
4ef0d4d0 KS |
1966 | |
1967 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
4ef0d4d0 | 1968 | |
72af86bd AS |
1969 | header = &(*ximg)->info.bmiHeader; |
1970 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
1971 | header->biSize = sizeof (*header); |
1972 | header->biWidth = width; | |
1973 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
1974 | header->biPlanes = 1; | |
1975 | header->biBitCount = depth; | |
1976 | header->biCompression = BI_RGB; | |
1977 | header->biClrUsed = palette_colors; | |
1978 | ||
1979 | /* TODO: fill in palette. */ | |
1980 | if (depth == 1) | |
1981 | { | |
1982 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
1983 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
1984 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
1985 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
1986 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
1987 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
1988 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
1989 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
1990 | } | |
1991 | ||
1992 | hdc = get_frame_dc (f); | |
1993 | ||
1994 | /* Create a DIBSection and raster array for the bitmap, | |
1995 | and store its handle in *pixmap. */ | |
1996 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
1997 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
1998 | /* casting avoids a GCC warning */ |
1999 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2000 | |
2001 | /* Realize display palette and garbage all frames. */ | |
2002 | release_frame_dc (f, hdc); | |
2003 | ||
2004 | if (*pixmap == NULL) | |
2005 | { | |
5fc9fdeb | 2006 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2007 | Lisp_Object errcode; |
2008 | /* All system errors are < 10000, so the following is safe. */ | |
13464394 | 2009 | XSETINT (errcode, err); |
4ef0d4d0 KS |
2010 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); |
2011 | x_destroy_x_image (*ximg); | |
c0213820 | 2012 | *ximg = NULL; |
4ef0d4d0 KS |
2013 | return 0; |
2014 | } | |
2015 | ||
2016 | return 1; | |
2017 | ||
2018 | #endif /* HAVE_NTGUI */ | |
2019 | ||
edfda783 | 2020 | #ifdef HAVE_NS |
ed3751c8 | 2021 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2022 | if (*pixmap == 0) |
2023 | { | |
2024 | *ximg = NULL; | |
2025 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2026 | return 0; | |
2027 | } | |
2028 | *ximg = *pixmap; | |
2029 | return 1; | |
2030 | #endif | |
4ef0d4d0 KS |
2031 | } |
2032 | ||
2033 | ||
2034 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2035 | ||
2036 | static void | |
d3da34e0 | 2037 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 | 2038 | { |
4d7e6e51 | 2039 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2040 | if (ximg) |
2041 | { | |
2042 | #ifdef HAVE_X_WINDOWS | |
2043 | xfree (ximg->data); | |
2044 | ximg->data = NULL; | |
2045 | XDestroyImage (ximg); | |
2046 | #endif /* HAVE_X_WINDOWS */ | |
2047 | #ifdef HAVE_NTGUI | |
2048 | /* Data will be freed by DestroyObject. */ | |
2049 | ximg->data = NULL; | |
2050 | xfree (ximg); | |
2051 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2052 | #ifdef HAVE_NS |
ed3751c8 | 2053 | ns_release_object (ximg); |
edfda783 | 2054 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2055 | } |
2056 | } | |
2057 | ||
2058 | ||
2059 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2060 | are width and height of both the image and pixmap. */ | |
2061 | ||
2062 | static void | |
d3da34e0 | 2063 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2064 | { |
2065 | #ifdef HAVE_X_WINDOWS | |
2066 | GC gc; | |
2067 | ||
4d7e6e51 | 2068 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2069 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); |
2070 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2071 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2072 | #endif /* HAVE_X_WINDOWS */ | |
2073 | ||
2074 | #ifdef HAVE_NTGUI | |
2075 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2076 | HDC hdc = get_frame_dc (f); | |
2077 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2078 | release_frame_dc (f, hdc); | |
2079 | #endif | |
2080 | #endif /* HAVE_NTGUI */ | |
2081 | ||
edfda783 | 2082 | #ifdef HAVE_NS |
a54e2c05 | 2083 | eassert (ximg == pixmap); |
ed3751c8 | 2084 | ns_retain_object (ximg); |
edfda783 | 2085 | #endif |
4ef0d4d0 KS |
2086 | } |
2087 | ||
547c9269 YM |
2088 | /* Thin wrapper for x_create_x_image_and_pixmap, so that it matches |
2089 | with image_put_x_image. */ | |
2090 | ||
2091 | static bool | |
2092 | image_create_x_image_and_pixmap (struct frame *f, struct image *img, | |
2093 | int width, int height, int depth, | |
2094 | XImagePtr *ximg, bool mask_p) | |
2095 | { | |
2096 | eassert ((!mask_p ? img->pixmap : img->mask) == NO_PIXMAP); | |
2097 | ||
2098 | return x_create_x_image_and_pixmap (f, width, height, depth, ximg, | |
2099 | !mask_p ? &img->pixmap : &img->mask); | |
2100 | } | |
2101 | ||
2102 | /* Put X image XIMG into image IMG on frame F, as a mask if and only | |
2103 | if MASK_P. On X, this simply records XIMG on a member of IMG, so | |
2104 | it can be put into the pixmap afterwards via image_sync_to_pixmaps. | |
2105 | On the other platforms, it puts XIMG into the pixmap, then frees | |
2106 | the X image and its buffer. */ | |
2107 | ||
2108 | static void | |
2109 | image_put_x_image (struct frame *f, struct image *img, XImagePtr ximg, | |
2110 | bool mask_p) | |
2111 | { | |
2112 | #ifdef HAVE_X_WINDOWS | |
2113 | if (!mask_p) | |
2114 | { | |
2115 | eassert (img->ximg == NULL); | |
2116 | img->ximg = ximg; | |
2117 | } | |
2118 | else | |
2119 | { | |
2120 | eassert (img->mask_img == NULL); | |
2121 | img->mask_img = ximg; | |
2122 | } | |
2123 | #else | |
2124 | x_put_x_image (f, ximg, !mask_p ? img->pixmap : img->mask, | |
2125 | img->width, img->height); | |
2126 | x_destroy_x_image (ximg); | |
2127 | #endif | |
2128 | } | |
2129 | ||
2130 | #ifdef HAVE_X_WINDOWS | |
2131 | /* Put the X images recorded in IMG on frame F into pixmaps, then free | |
2132 | the X images and their buffers. */ | |
2133 | ||
2134 | static void | |
2135 | image_sync_to_pixmaps (struct frame *f, struct image *img) | |
2136 | { | |
2137 | if (img->ximg) | |
2138 | { | |
2139 | x_put_x_image (f, img->ximg, img->pixmap, img->width, img->height); | |
2140 | x_destroy_x_image (img->ximg); | |
2141 | img->ximg = NULL; | |
2142 | } | |
2143 | if (img->mask_img) | |
2144 | { | |
2145 | x_put_x_image (f, img->mask_img, img->mask, img->width, img->height); | |
2146 | x_destroy_x_image (img->mask_img); | |
2147 | img->mask_img = NULL; | |
2148 | } | |
2149 | } | |
2150 | #endif | |
2151 | ||
2152 | #ifdef HAVE_NTGUI | |
2153 | /* Create a memory device context for IMG on frame F. It stores the | |
2154 | currently selected GDI object into *PREV for future restoration by | |
2155 | image_unget_x_image_or_dc. */ | |
2156 | ||
2157 | static XImagePtr_or_DC | |
2158 | image_get_x_image_or_dc (struct frame *f, struct image *img, bool mask_p, | |
2159 | HGDIOBJ *prev) | |
2160 | { | |
2161 | HDC frame_dc = get_frame_dc (f); | |
2162 | XImagePtr_or_DC ximg = CreateCompatibleDC (frame_dc); | |
2163 | ||
2164 | release_frame_dc (f, frame_dc); | |
2165 | *prev = SelectObject (ximg, !mask_p ? img->pixmap : img->mask); | |
b8075603 YM |
2166 | |
2167 | return ximg; | |
547c9269 YM |
2168 | } |
2169 | ||
b8075603 YM |
2170 | static void |
2171 | image_unget_x_image_or_dc (struct image *img, bool mask_p, | |
2172 | XImagePtr_or_DC ximg, HGDIOBJ prev) | |
547c9269 YM |
2173 | { |
2174 | SelectObject (ximg, prev); | |
2175 | DeleteDC (ximg); | |
2176 | } | |
2177 | #else /* !HAVE_NTGUI */ | |
2178 | /* Get the X image for IMG on frame F. The resulting X image data | |
2179 | should be treated as read-only at least on X. */ | |
2180 | ||
2181 | static XImagePtr | |
2182 | image_get_x_image (struct frame *f, struct image *img, bool mask_p) | |
2183 | { | |
2184 | #ifdef HAVE_X_WINDOWS | |
2185 | XImagePtr ximg_in_img = !mask_p ? img->ximg : img->mask_img; | |
2186 | ||
2187 | if (ximg_in_img) | |
2188 | return ximg_in_img; | |
2189 | else | |
2190 | return XGetImage (FRAME_X_DISPLAY (f), !mask_p ? img->pixmap : img->mask, | |
2191 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
2192 | #elif defined (HAVE_NS) | |
2193 | XImagePtr pixmap = !mask_p ? img->pixmap : img->mask; | |
2194 | ||
2195 | ns_retain_object (pixmap); | |
2196 | return pixmap; | |
2197 | #endif | |
2198 | } | |
2199 | ||
df03dc8a YM |
2200 | static void |
2201 | image_unget_x_image (struct image *img, bool mask_p, XImagePtr ximg) | |
547c9269 YM |
2202 | { |
2203 | #ifdef HAVE_X_WINDOWS | |
2204 | XImagePtr ximg_in_img = !mask_p ? img->ximg : img->mask_img; | |
2205 | ||
2206 | if (ximg_in_img) | |
2207 | eassert (ximg == ximg_in_img); | |
2208 | else | |
2209 | XDestroyImage (ximg); | |
2210 | #elif defined (HAVE_NS) | |
2211 | ns_release_object (ximg); | |
2212 | #endif | |
2213 | } | |
2214 | #endif /* !HAVE_NTGUI */ | |
2215 | ||
4ef0d4d0 KS |
2216 | \f |
2217 | /*********************************************************************** | |
2218 | File Handling | |
2219 | ***********************************************************************/ | |
2220 | ||
6678dc11 | 2221 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2222 | x-bitmap-file-path. Value is the encoded full name of the file |
2223 | found, or nil if not found. */ | |
4ef0d4d0 | 2224 | |
c640aa9b | 2225 | Lisp_Object |
d3da34e0 | 2226 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2227 | { |
2228 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2229 | int fd; |
2230 | ||
6678dc11 GM |
2231 | /* TODO I think this should use something like image-load-path |
2232 | instead. Unfortunately, that can contain non-string elements. */ | |
2233 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2234 | Vdata_directory), | |
2235 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2236 | |
050b82f6 | 2237 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
518c40a2 | 2238 | fd = openp (search_path, file, Qnil, &file_found, Qnil, false); |
4ef0d4d0 KS |
2239 | |
2240 | if (fd == -1) | |
2241 | file_found = Qnil; | |
2242 | else | |
022af124 KH |
2243 | { |
2244 | file_found = ENCODE_FILE (file_found); | |
f6774c1a AS |
2245 | if (fd != -2) |
2246 | emacs_close (fd); | |
022af124 | 2247 | } |
4ef0d4d0 | 2248 | |
4ef0d4d0 KS |
2249 | return file_found; |
2250 | } | |
2251 | ||
2252 | ||
2253 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2254 | with xmalloc holding FILE's contents. Value is null if an error | |
2255 | occurred. *SIZE is set to the size of the file. */ | |
2256 | ||
2257 | static unsigned char * | |
dd52fcea | 2258 | slurp_file (char *file, ptrdiff_t *size) |
4ef0d4d0 | 2259 | { |
406af475 | 2260 | FILE *fp = emacs_fopen (file, "rb"); |
4ef0d4d0 KS |
2261 | unsigned char *buf = NULL; |
2262 | struct stat st; | |
2263 | ||
3f5bef16 | 2264 | if (fp) |
4ef0d4d0 | 2265 | { |
2bfa3d3e | 2266 | dynwind_begin (); |
3f5bef16 PE |
2267 | record_unwind_protect_ptr (fclose_unwind, fp); |
2268 | ||
2269 | if (fstat (fileno (fp), &st) == 0 | |
2270 | && 0 <= st.st_size && st.st_size < min (PTRDIFF_MAX, SIZE_MAX)) | |
4ef0d4d0 | 2271 | { |
3f5bef16 PE |
2272 | /* Report an error if we read past the purported EOF. |
2273 | This can happen if the file grows as we read it. */ | |
2274 | ptrdiff_t buflen = st.st_size; | |
2275 | buf = xmalloc (buflen + 1); | |
2276 | if (fread (buf, 1, buflen + 1, fp) == buflen) | |
2277 | *size = buflen; | |
2278 | else | |
2279 | { | |
2280 | xfree (buf); | |
2281 | buf = NULL; | |
2282 | } | |
4ef0d4d0 | 2283 | } |
3f5bef16 | 2284 | |
2bfa3d3e | 2285 | dynwind_end (); |
4ef0d4d0 KS |
2286 | } |
2287 | ||
2288 | return buf; | |
2289 | } | |
2290 | ||
2291 | ||
2292 | \f | |
4ef0d4d0 KS |
2293 | /*********************************************************************** |
2294 | XBM images | |
2295 | ***********************************************************************/ | |
2296 | ||
578098f3 PE |
2297 | static bool xbm_load (struct frame *f, struct image *img); |
2298 | static bool xbm_image_p (Lisp_Object object); | |
2299 | static bool xbm_file_p (Lisp_Object); | |
4ef0d4d0 KS |
2300 | |
2301 | ||
2302 | /* Indices of image specification fields in xbm_format, below. */ | |
2303 | ||
2304 | enum xbm_keyword_index | |
2305 | { | |
2306 | XBM_TYPE, | |
2307 | XBM_FILE, | |
2308 | XBM_WIDTH, | |
2309 | XBM_HEIGHT, | |
2310 | XBM_DATA, | |
2311 | XBM_FOREGROUND, | |
2312 | XBM_BACKGROUND, | |
2313 | XBM_ASCENT, | |
2314 | XBM_MARGIN, | |
2315 | XBM_RELIEF, | |
2316 | XBM_ALGORITHM, | |
2317 | XBM_HEURISTIC_MASK, | |
2318 | XBM_MASK, | |
2319 | XBM_LAST | |
2320 | }; | |
2321 | ||
2322 | /* Vector of image_keyword structures describing the format | |
2323 | of valid XBM image specifications. */ | |
2324 | ||
91433552 | 2325 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2326 | { |
2327 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2328 | {":file", IMAGE_STRING_VALUE, 0}, | |
2329 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2330 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2331 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2332 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2333 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2334 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 2335 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
2336 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
2337 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2338 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2339 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2340 | }; | |
2341 | ||
2342 | /* Structure describing the image type XBM. */ | |
2343 | ||
2344 | static struct image_type xbm_type = | |
2345 | { | |
2346 | &Qxbm, | |
2347 | xbm_image_p, | |
2348 | xbm_load, | |
2349 | x_clear_image, | |
bb4d86b4 | 2350 | NULL, |
4ef0d4d0 KS |
2351 | NULL |
2352 | }; | |
2353 | ||
2354 | /* Tokens returned from xbm_scan. */ | |
2355 | ||
2356 | enum xbm_token | |
2357 | { | |
2358 | XBM_TK_IDENT = 256, | |
2359 | XBM_TK_NUMBER | |
2360 | }; | |
2361 | ||
2362 | ||
578098f3 | 2363 | /* Return true if OBJECT is a valid XBM-type image specification. |
4ef0d4d0 KS |
2364 | A valid specification is a list starting with the symbol `image' |
2365 | The rest of the list is a property list which must contain an | |
578098f3 | 2366 | entry `:type xbm'. |
4ef0d4d0 KS |
2367 | |
2368 | If the specification specifies a file to load, it must contain | |
2369 | an entry `:file FILENAME' where FILENAME is a string. | |
2370 | ||
2371 | If the specification is for a bitmap loaded from memory it must | |
2372 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2373 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2374 | ||
2375 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2376 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2377 | ||
2378 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2379 | ||
2380 | 3. a vector of strings or bool-vectors, one for each line of the | |
2381 | bitmap. | |
2382 | ||
bbe6f2aa | 2383 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2384 | may not be specified in this case because they are defined in the |
2385 | XBM file. | |
2386 | ||
2387 | Both the file and data forms may contain the additional entries | |
2388 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2389 | foreground and background of the frame on which the image is | |
2390 | displayed is used. */ | |
2391 | ||
578098f3 | 2392 | static bool |
d3da34e0 | 2393 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2394 | { |
2395 | struct image_keyword kw[XBM_LAST]; | |
2396 | ||
72af86bd | 2397 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2398 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2399 | return 0; | |
2400 | ||
a54e2c05 | 2401 | eassert (EQ (kw[XBM_TYPE].value, Qxbm)); |
4ef0d4d0 KS |
2402 | |
2403 | if (kw[XBM_FILE].count) | |
2404 | { | |
2405 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2406 | return 0; | |
2407 | } | |
2408 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2409 | { | |
2410 | /* In-memory XBM file. */ | |
2411 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2412 | return 0; | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | Lisp_Object data; | |
13464394 | 2417 | int width, height; |
4ef0d4d0 KS |
2418 | |
2419 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2420 | if (!kw[XBM_WIDTH].count | |
2421 | || !kw[XBM_HEIGHT].count | |
2422 | || !kw[XBM_DATA].count) | |
2423 | return 0; | |
2424 | ||
2425 | data = kw[XBM_DATA].value; | |
2426 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2427 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2428 | ||
2429 | /* Check type of data, and width and height against contents of | |
2430 | data. */ | |
2431 | if (VECTORP (data)) | |
2432 | { | |
45aebb64 | 2433 | EMACS_INT i; |
4ef0d4d0 KS |
2434 | |
2435 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2436 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2437 | return 0; |
2438 | ||
2439 | /* Each string or bool-vector in data must be large enough | |
2440 | for one line of the image. */ | |
2441 | for (i = 0; i < height; ++i) | |
2442 | { | |
28be1ada | 2443 | Lisp_Object elt = AREF (data, i); |
4ef0d4d0 KS |
2444 | |
2445 | if (STRINGP (elt)) | |
2446 | { | |
2447 | if (SCHARS (elt) | |
2448 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2449 | return 0; | |
2450 | } | |
2451 | else if (BOOL_VECTOR_P (elt)) | |
2452 | { | |
1c0a7493 | 2453 | if (bool_vector_size (elt) < width) |
4ef0d4d0 KS |
2454 | return 0; |
2455 | } | |
2456 | else | |
2457 | return 0; | |
2458 | } | |
2459 | } | |
2460 | else if (STRINGP (data)) | |
2461 | { | |
2462 | if (SCHARS (data) | |
2463 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2464 | return 0; | |
2465 | } | |
2466 | else if (BOOL_VECTOR_P (data)) | |
2467 | { | |
1c0a7493 | 2468 | if (bool_vector_size (data) / height < width) |
4ef0d4d0 KS |
2469 | return 0; |
2470 | } | |
2471 | else | |
2472 | return 0; | |
2473 | } | |
2474 | ||
2475 | return 1; | |
2476 | } | |
2477 | ||
2478 | ||
2479 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2480 | either an enumerator from enum xbm_token, or a character for a | |
2481 | single-character token, or 0 at end of file. If scanning an | |
2482 | identifier, store the lexeme of the identifier in SVAL. If | |
2483 | scanning a number, store its value in *IVAL. */ | |
2484 | ||
2485 | static int | |
d3da34e0 | 2486 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2487 | { |
2488 | unsigned int c; | |
2489 | ||
2490 | loop: | |
2491 | ||
2492 | /* Skip white space. */ | |
620f13b0 | 2493 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
2494 | ; |
2495 | ||
2496 | if (*s >= end) | |
2497 | c = 0; | |
620f13b0 | 2498 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2499 | { |
2500 | int value = 0, digit; | |
2501 | ||
2502 | if (c == '0' && *s < end) | |
2503 | { | |
2504 | c = *(*s)++; | |
2505 | if (c == 'x' || c == 'X') | |
2506 | { | |
2507 | while (*s < end) | |
2508 | { | |
2509 | c = *(*s)++; | |
620f13b0 | 2510 | if (c_isdigit (c)) |
4ef0d4d0 KS |
2511 | digit = c - '0'; |
2512 | else if (c >= 'a' && c <= 'f') | |
2513 | digit = c - 'a' + 10; | |
2514 | else if (c >= 'A' && c <= 'F') | |
2515 | digit = c - 'A' + 10; | |
2516 | else | |
2517 | break; | |
2518 | value = 16 * value + digit; | |
2519 | } | |
2520 | } | |
620f13b0 | 2521 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2522 | { |
2523 | value = c - '0'; | |
2524 | while (*s < end | |
620f13b0 | 2525 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2526 | value = 8 * value + c - '0'; |
2527 | } | |
2528 | } | |
2529 | else | |
2530 | { | |
2531 | value = c - '0'; | |
2532 | while (*s < end | |
620f13b0 | 2533 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2534 | value = 10 * value + c - '0'; |
2535 | } | |
2536 | ||
2537 | if (*s < end) | |
2538 | *s = *s - 1; | |
2539 | *ival = value; | |
2540 | c = XBM_TK_NUMBER; | |
2541 | } | |
620f13b0 | 2542 | else if (c_isalpha (c) || c == '_') |
4ef0d4d0 KS |
2543 | { |
2544 | *sval++ = c; | |
2545 | while (*s < end | |
620f13b0 | 2546 | && (c = *(*s)++, (c_isalnum (c) || c == '_'))) |
4ef0d4d0 KS |
2547 | *sval++ = c; |
2548 | *sval = 0; | |
2549 | if (*s < end) | |
2550 | *s = *s - 1; | |
2551 | c = XBM_TK_IDENT; | |
2552 | } | |
2553 | else if (c == '/' && **s == '*') | |
2554 | { | |
2555 | /* C-style comment. */ | |
2556 | ++*s; | |
2557 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2558 | ++*s; | |
2559 | if (**s) | |
2560 | { | |
2561 | *s += 2; | |
2562 | goto loop; | |
2563 | } | |
2564 | } | |
2565 | ||
2566 | return c; | |
2567 | } | |
2568 | ||
2569 | #ifdef HAVE_NTGUI | |
2570 | ||
2571 | /* Create a Windows bitmap from X bitmap data. */ | |
2572 | static HBITMAP | |
2573 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2574 | { | |
2575 | static unsigned char swap_nibble[16] | |
2576 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2577 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2578 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2579 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2580 | int i, j, w1, w2; | |
2581 | unsigned char *bits, *p; | |
2582 | HBITMAP bmp; | |
2583 | ||
2584 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2585 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
38182d90 | 2586 | bits = alloca (height * w2); |
72af86bd | 2587 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2588 | for (i = 0; i < height; i++) |
2589 | { | |
2590 | p = bits + i*w2; | |
2591 | for (j = 0; j < w1; j++) | |
2592 | { | |
2593 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2594 | unsigned char c = *data++; | |
2595 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2596 | | (swap_nibble[(c>>4) & 0xf])); | |
2597 | } | |
2598 | } | |
2599 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2600 | ||
2601 | return bmp; | |
2602 | } | |
2603 | ||
3046a84b | 2604 | static void |
7c3320d8 JB |
2605 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2606 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2607 | { |
2608 | HDC hdc, old_img_dc, new_img_dc; | |
2609 | HGDIOBJ old_prev, new_prev; | |
2610 | HBITMAP new_pixmap; | |
2611 | ||
2612 | hdc = get_frame_dc (f); | |
2613 | old_img_dc = CreateCompatibleDC (hdc); | |
2614 | new_img_dc = CreateCompatibleDC (hdc); | |
2615 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2616 | release_frame_dc (f, hdc); | |
2617 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2618 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2619 | /* Windows convention for mono bitmaps is black = background, |
2620 | white = foreground. */ | |
2386b1f1 JR |
2621 | SetTextColor (new_img_dc, background); |
2622 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2623 | |
2624 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2625 | 0, 0, SRCCOPY); | |
2626 | ||
2627 | SelectObject (old_img_dc, old_prev); | |
2628 | SelectObject (new_img_dc, new_prev); | |
2629 | DeleteDC (old_img_dc); | |
2630 | DeleteDC (new_img_dc); | |
2631 | DeleteObject (img->pixmap); | |
2632 | if (new_pixmap == 0) | |
2633 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2634 | else | |
2635 | img->pixmap = new_pixmap; | |
2636 | } | |
2637 | ||
2638 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2639 | ||
2640 | #else | |
2641 | ||
2642 | #define XBM_BIT_SHUFFLE(b) (b) | |
2643 | ||
2644 | #endif /* HAVE_NTGUI */ | |
2645 | ||
2646 | ||
2647 | static void | |
d3da34e0 JB |
2648 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2649 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
578098f3 | 2650 | bool non_default_colors) |
4ef0d4d0 KS |
2651 | { |
2652 | #ifdef HAVE_NTGUI | |
2653 | img->pixmap | |
2654 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2655 | ||
2656 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2657 | if (non_default_colors) | |
2658 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2659 | |
2660 | #elif defined (HAVE_NS) | |
ed3751c8 | 2661 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2662 | |
4ef0d4d0 | 2663 | #else |
ca4aa935 PE |
2664 | img->pixmap = |
2665 | (x_check_image_size (0, img->width, img->height) | |
2666 | ? XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
4ef0d4d0 KS |
2667 | FRAME_X_WINDOW (f), |
2668 | data, | |
2669 | img->width, img->height, | |
2670 | fg, bg, | |
ca4aa935 PE |
2671 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))) |
2672 | : NO_PIXMAP); | |
edfda783 | 2673 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2674 | } |
2675 | ||
2676 | ||
2677 | ||
2678 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2679 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2680 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2681 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
578098f3 PE |
2682 | Value is true if successful. DATA null means just test if |
2683 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR, | |
2684 | inhibit the call to image_error when the image size is invalid (the | |
2685 | bitmap remains unread). */ | |
4ef0d4d0 | 2686 | |
578098f3 | 2687 | static bool |
d3da34e0 | 2688 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2689 | int *width, int *height, char **data, |
578098f3 | 2690 | bool inhibit_image_error) |
4ef0d4d0 KS |
2691 | { |
2692 | unsigned char *s = contents; | |
2693 | char buffer[BUFSIZ]; | |
578098f3 PE |
2694 | bool padding_p = 0; |
2695 | bool v10 = 0; | |
ca4aa935 | 2696 | int bytes_per_line, i, nbytes; |
b8dc29e9 | 2697 | char *p; |
4ef0d4d0 KS |
2698 | int value; |
2699 | int LA1; | |
2700 | ||
2701 | #define match() \ | |
2702 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2703 | ||
2704 | #define expect(TOKEN) \ | |
f462f075 PE |
2705 | do \ |
2706 | { \ | |
2707 | if (LA1 != (TOKEN)) \ | |
2708 | goto failure; \ | |
2709 | match (); \ | |
2710 | } \ | |
2711 | while (0) | |
4ef0d4d0 KS |
2712 | |
2713 | #define expect_ident(IDENT) \ | |
2714 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2715 | match (); \ | |
2716 | else \ | |
2717 | goto failure | |
2718 | ||
2719 | *width = *height = -1; | |
2720 | if (data) | |
2721 | *data = NULL; | |
2722 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2723 | ||
2724 | /* Parse defines for width, height and hot-spots. */ | |
2725 | while (LA1 == '#') | |
2726 | { | |
2727 | match (); | |
2728 | expect_ident ("define"); | |
2729 | expect (XBM_TK_IDENT); | |
2730 | ||
431feaf6 | 2731 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2732 | { |
6ae141d6 PE |
2733 | char *q = strrchr (buffer, '_'); |
2734 | q = q ? q + 1 : buffer; | |
2735 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2736 | *width = value; |
6ae141d6 | 2737 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2738 | *height = value; |
2739 | } | |
2740 | expect (XBM_TK_NUMBER); | |
2741 | } | |
2742 | ||
f1f25b99 | 2743 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2744 | { |
ce959360 CY |
2745 | if (!inhibit_image_error) |
2746 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2747 | goto failure; |
2748 | } | |
4ef0d4d0 KS |
2749 | else if (data == NULL) |
2750 | goto success; | |
2751 | ||
2752 | /* Parse bits. Must start with `static'. */ | |
2753 | expect_ident ("static"); | |
2754 | if (LA1 == XBM_TK_IDENT) | |
2755 | { | |
2756 | if (strcmp (buffer, "unsigned") == 0) | |
2757 | { | |
2758 | match (); | |
2759 | expect_ident ("char"); | |
2760 | } | |
2761 | else if (strcmp (buffer, "short") == 0) | |
2762 | { | |
2763 | match (); | |
2764 | v10 = 1; | |
2765 | if (*width % 16 && *width % 16 < 9) | |
2766 | padding_p = 1; | |
2767 | } | |
2768 | else if (strcmp (buffer, "char") == 0) | |
2769 | match (); | |
2770 | else | |
2771 | goto failure; | |
2772 | } | |
2773 | else | |
2774 | goto failure; | |
2775 | ||
2776 | expect (XBM_TK_IDENT); | |
2777 | expect ('['); | |
2778 | expect (']'); | |
2779 | expect ('='); | |
2780 | expect ('{'); | |
2781 | ||
ca4aa935 PE |
2782 | if (! x_check_image_size (0, *width, *height)) |
2783 | { | |
2784 | if (!inhibit_image_error) | |
2785 | image_error ("Image too large (%dx%d)", | |
2786 | make_number (*width), make_number (*height)); | |
2787 | goto failure; | |
2788 | } | |
4ef0d4d0 KS |
2789 | bytes_per_line = (*width + 7) / 8 + padding_p; |
2790 | nbytes = bytes_per_line * *height; | |
c1ade6f7 | 2791 | p = *data = xmalloc_atomic (nbytes); |
4ef0d4d0 KS |
2792 | |
2793 | if (v10) | |
2794 | { | |
2795 | for (i = 0; i < nbytes; i += 2) | |
2796 | { | |
2797 | int val = value; | |
2798 | expect (XBM_TK_NUMBER); | |
2799 | ||
2800 | *p++ = XBM_BIT_SHUFFLE (val); | |
2801 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2802 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2803 | ||
2804 | if (LA1 == ',' || LA1 == '}') | |
2805 | match (); | |
2806 | else | |
2807 | goto failure; | |
2808 | } | |
2809 | } | |
2810 | else | |
2811 | { | |
2812 | for (i = 0; i < nbytes; ++i) | |
2813 | { | |
2814 | int val = value; | |
2815 | expect (XBM_TK_NUMBER); | |
2816 | ||
2817 | *p++ = XBM_BIT_SHUFFLE (val); | |
2818 | ||
2819 | if (LA1 == ',' || LA1 == '}') | |
2820 | match (); | |
2821 | else | |
2822 | goto failure; | |
2823 | } | |
2824 | } | |
2825 | ||
2826 | success: | |
2827 | return 1; | |
2828 | ||
2829 | failure: | |
2830 | ||
2831 | if (data && *data) | |
2832 | { | |
2833 | xfree (*data); | |
2834 | *data = NULL; | |
2835 | } | |
2836 | return 0; | |
2837 | ||
2838 | #undef match | |
2839 | #undef expect | |
2840 | #undef expect_ident | |
2841 | } | |
2842 | ||
2843 | ||
2844 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
578098f3 | 2845 | CONTENTS. END is the end of the buffer. Value is true if |
4ef0d4d0 KS |
2846 | successful. */ |
2847 | ||
578098f3 | 2848 | static bool |
d3da34e0 JB |
2849 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2850 | unsigned char *end) | |
4ef0d4d0 | 2851 | { |
578098f3 | 2852 | bool rc; |
b8dc29e9 | 2853 | char *data; |
578098f3 | 2854 | bool success_p = 0; |
4ef0d4d0 | 2855 | |
ce959360 CY |
2856 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2857 | &data, 0); | |
4ef0d4d0 KS |
2858 | if (rc) |
2859 | { | |
2860 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2861 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2862 | bool non_default_colors = 0; |
4ef0d4d0 KS |
2863 | Lisp_Object value; |
2864 | ||
a54e2c05 | 2865 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
2866 | |
2867 | /* Get foreground and background colors, maybe allocate colors. */ | |
2868 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2869 | if (!NILP (value)) | |
2870 | { | |
2871 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2872 | non_default_colors = 1; | |
2873 | } | |
2874 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2875 | if (!NILP (value)) | |
2876 | { | |
2877 | background = x_alloc_image_color (f, img, value, background); | |
2878 | img->background = background; | |
2879 | img->background_valid = 1; | |
2880 | non_default_colors = 1; | |
2881 | } | |
2882 | ||
1f026899 | 2883 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2884 | foreground, background, |
2885 | non_default_colors); | |
2886 | xfree (data); | |
2887 | ||
2888 | if (img->pixmap == NO_PIXMAP) | |
2889 | { | |
2890 | x_clear_image (f, img); | |
2891 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2892 | } | |
2893 | else | |
2894 | success_p = 1; | |
2895 | } | |
2896 | else | |
2897 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2898 | ||
2899 | return success_p; | |
2900 | } | |
2901 | ||
2902 | ||
578098f3 | 2903 | /* Value is true if DATA looks like an in-memory XBM file. */ |
4ef0d4d0 | 2904 | |
578098f3 | 2905 | static bool |
d3da34e0 | 2906 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2907 | { |
2908 | int w, h; | |
2909 | return (STRINGP (data) | |
f1f25b99 | 2910 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2911 | (SDATA (data) + SBYTES (data)), |
2912 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2913 | } |
2914 | ||
2915 | ||
2916 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
578098f3 | 2917 | true if successful. */ |
4ef0d4d0 | 2918 | |
578098f3 | 2919 | static bool |
d3da34e0 | 2920 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 2921 | { |
578098f3 | 2922 | bool success_p = 0; |
4ef0d4d0 KS |
2923 | Lisp_Object file_name; |
2924 | ||
a54e2c05 | 2925 | eassert (xbm_image_p (img->spec)); |
4ef0d4d0 KS |
2926 | |
2927 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2928 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2929 | if (STRINGP (file_name)) | |
2930 | { | |
2931 | Lisp_Object file; | |
2932 | unsigned char *contents; | |
dd52fcea | 2933 | ptrdiff_t size; |
4ef0d4d0 KS |
2934 | |
2935 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2936 | if (!STRINGP (file)) |
2937 | { | |
2938 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2939 | return 0; |
2940 | } | |
2941 | ||
42a5b22f | 2942 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2943 | if (contents == NULL) |
2944 | { | |
2945 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2946 | return 0; |
2947 | } | |
2948 | ||
2949 | success_p = xbm_load_image (f, img, contents, contents + size); | |
d5a19415 | 2950 | xfree (contents); |
4ef0d4d0 KS |
2951 | } |
2952 | else | |
2953 | { | |
2954 | struct image_keyword fmt[XBM_LAST]; | |
2955 | Lisp_Object data; | |
2956 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2957 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2958 | bool non_default_colors = 0; |
4ef0d4d0 | 2959 | char *bits; |
578098f3 PE |
2960 | bool parsed_p; |
2961 | bool in_memory_file_p = 0; | |
4ef0d4d0 KS |
2962 | |
2963 | /* See if data looks like an in-memory XBM file. */ | |
2964 | data = image_spec_value (img->spec, QCdata, NULL); | |
2965 | in_memory_file_p = xbm_file_p (data); | |
2966 | ||
2967 | /* Parse the image specification. */ | |
72af86bd | 2968 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2969 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
a54e2c05 | 2970 | eassert (parsed_p); |
4ef0d4d0 KS |
2971 | |
2972 | /* Get specified width, and height. */ | |
2973 | if (!in_memory_file_p) | |
2974 | { | |
2975 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2976 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
a54e2c05 | 2977 | eassert (img->width > 0 && img->height > 0); |
ca4aa935 PE |
2978 | if (!check_image_size (f, img->width, img->height)) |
2979 | { | |
2980 | image_error ("Invalid image size (see `max-image-size')", | |
2981 | Qnil, Qnil); | |
2982 | return 0; | |
2983 | } | |
4ef0d4d0 KS |
2984 | } |
2985 | ||
2986 | /* Get foreground and background colors, maybe allocate colors. */ | |
2987 | if (fmt[XBM_FOREGROUND].count | |
2988 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2989 | { | |
2990 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2991 | foreground); | |
2992 | non_default_colors = 1; | |
2993 | } | |
2994 | ||
2995 | if (fmt[XBM_BACKGROUND].count | |
2996 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2997 | { | |
2998 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2999 | background); | |
3000 | non_default_colors = 1; | |
3001 | } | |
3002 | ||
3003 | if (in_memory_file_p) | |
3004 | success_p = xbm_load_image (f, img, SDATA (data), | |
3005 | (SDATA (data) | |
3006 | + SBYTES (data))); | |
3007 | else | |
3008 | { | |
3009 | if (VECTORP (data)) | |
3010 | { | |
3011 | int i; | |
3012 | char *p; | |
3013 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
3014 | ||
38182d90 | 3015 | p = bits = alloca (nbytes * img->height); |
4ef0d4d0 KS |
3016 | for (i = 0; i < img->height; ++i, p += nbytes) |
3017 | { | |
28be1ada | 3018 | Lisp_Object line = AREF (data, i); |
4ef0d4d0 | 3019 | if (STRINGP (line)) |
72af86bd | 3020 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 3021 | else |
df5b4930 | 3022 | memcpy (p, bool_vector_data (line), nbytes); |
4ef0d4d0 KS |
3023 | } |
3024 | } | |
3025 | else if (STRINGP (data)) | |
42a5b22f | 3026 | bits = SSDATA (data); |
4ef0d4d0 | 3027 | else |
df5b4930 | 3028 | bits = (char *) bool_vector_data (data); |
4ef0d4d0 | 3029 | |
0fda9b75 | 3030 | #ifdef HAVE_NTGUI |
44b1dc2e JR |
3031 | { |
3032 | char *invertedBits; | |
3033 | int nbytes, i; | |
3034 | /* Windows mono bitmaps are reversed compared with X. */ | |
3035 | invertedBits = bits; | |
285d07e2 | 3036 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 3037 | * img->height; |
38182d90 | 3038 | bits = alloca (nbytes); |
44b1dc2e JR |
3039 | for (i = 0; i < nbytes; i++) |
3040 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
3041 | } | |
3042 | #endif | |
4ef0d4d0 KS |
3043 | /* Create the pixmap. */ |
3044 | ||
ca4aa935 PE |
3045 | if (x_check_image_size (0, img->width, img->height)) |
3046 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
3047 | foreground, background, | |
3048 | non_default_colors); | |
3049 | else | |
3050 | img->pixmap = NO_PIXMAP; | |
3051 | ||
4ef0d4d0 KS |
3052 | if (img->pixmap) |
3053 | success_p = 1; | |
3054 | else | |
3055 | { | |
3056 | image_error ("Unable to create pixmap for XBM image `%s'", | |
3057 | img->spec, Qnil); | |
3058 | x_clear_image (f, img); | |
3059 | } | |
3060 | } | |
3061 | } | |
3062 | ||
3063 | return success_p; | |
3064 | } | |
3065 | ||
3066 | ||
3067 | \f | |
3068 | /*********************************************************************** | |
3069 | XPM images | |
3070 | ***********************************************************************/ | |
3071 | ||
9e2a2647 | 3072 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 3073 | |
578098f3 PE |
3074 | static bool xpm_image_p (Lisp_Object object); |
3075 | static bool xpm_load (struct frame *f, struct image *img); | |
4ef0d4d0 | 3076 | |
9e2a2647 | 3077 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
3078 | |
3079 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
3080 | #ifdef HAVE_NTGUI |
3081 | /* Indicate to xpm.h that we don't have Xlib. */ | |
3082 | #define FOR_MSW | |
3083 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 3084 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
3085 | #define XColor xpm_XColor |
3086 | #define XImage xpm_XImage | |
279d3293 | 3087 | #define Display xpm_Display |
4ef0d4d0 KS |
3088 | #define PIXEL_ALREADY_TYPEDEFED |
3089 | #include "X11/xpm.h" | |
3090 | #undef FOR_MSW | |
3091 | #undef XColor | |
3092 | #undef XImage | |
279d3293 | 3093 | #undef Display |
4ef0d4d0 KS |
3094 | #undef PIXEL_ALREADY_TYPEDEFED |
3095 | #else | |
3096 | #include "X11/xpm.h" | |
3097 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3098 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3099 | |
9e2a2647 | 3100 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
3101 | /* The symbol `xpm' identifying XPM-format images. */ |
3102 | ||
955cbe7b | 3103 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
3104 | |
3105 | /* Indices of image specification fields in xpm_format, below. */ | |
3106 | ||
3107 | enum xpm_keyword_index | |
3108 | { | |
3109 | XPM_TYPE, | |
3110 | XPM_FILE, | |
3111 | XPM_DATA, | |
3112 | XPM_ASCENT, | |
3113 | XPM_MARGIN, | |
3114 | XPM_RELIEF, | |
3115 | XPM_ALGORITHM, | |
3116 | XPM_HEURISTIC_MASK, | |
3117 | XPM_MASK, | |
3118 | XPM_COLOR_SYMBOLS, | |
3119 | XPM_BACKGROUND, | |
3120 | XPM_LAST | |
3121 | }; | |
3122 | ||
3123 | /* Vector of image_keyword structures describing the format | |
3124 | of valid XPM image specifications. */ | |
3125 | ||
91433552 | 3126 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
3127 | { |
3128 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3129 | {":file", IMAGE_STRING_VALUE, 0}, | |
3130 | {":data", IMAGE_STRING_VALUE, 0}, | |
3131 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 3132 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
3133 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
3134 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3135 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3136 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3137 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3138 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3139 | }; | |
3140 | ||
a9e7a9d5 | 3141 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 3142 | static bool init_xpm_functions (void); |
bb4d86b4 CY |
3143 | #else |
3144 | #define init_xpm_functions NULL | |
3145 | #endif | |
3146 | ||
4ef0d4d0 KS |
3147 | /* Structure describing the image type XPM. */ |
3148 | ||
3149 | static struct image_type xpm_type = | |
3150 | { | |
3151 | &Qxpm, | |
3152 | xpm_image_p, | |
3153 | xpm_load, | |
3154 | x_clear_image, | |
bb4d86b4 | 3155 | init_xpm_functions, |
4ef0d4d0 KS |
3156 | NULL |
3157 | }; | |
3158 | ||
3159 | #ifdef HAVE_X_WINDOWS | |
3160 | ||
3161 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3162 | functions for allocating image colors. Our own functions handle | |
3163 | color allocation failures more gracefully than the ones on the XPM | |
3164 | lib. */ | |
3165 | ||
3166 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3167 | #define ALLOC_XPM_COLORS | |
3168 | #endif | |
3169 | #endif /* HAVE_X_WINDOWS */ | |
3170 | ||
3171 | #ifdef ALLOC_XPM_COLORS | |
3172 | ||
f57e2426 J |
3173 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, |
3174 | XColor *, int); | |
4ef0d4d0 KS |
3175 | |
3176 | /* An entry in a hash table used to cache color definitions of named | |
3177 | colors. This cache is necessary to speed up XPM image loading in | |
3178 | case we do color allocations ourselves. Without it, we would need | |
3179 | a call to XParseColor per pixel in the image. */ | |
3180 | ||
3181 | struct xpm_cached_color | |
3182 | { | |
3183 | /* Next in collision chain. */ | |
3184 | struct xpm_cached_color *next; | |
3185 | ||
3186 | /* Color definition (RGB and pixel color). */ | |
3187 | XColor color; | |
3188 | ||
3189 | /* Color name. */ | |
fbe9e0b9 | 3190 | char name[FLEXIBLE_ARRAY_MEMBER]; |
4ef0d4d0 KS |
3191 | }; |
3192 | ||
3193 | /* The hash table used for the color cache, and its bucket vector | |
3194 | size. */ | |
3195 | ||
3196 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3197 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3198 | |
3199 | /* Initialize the color cache. */ | |
3200 | ||
3201 | static void | |
d3da34e0 | 3202 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3203 | { |
3204 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
23f86fce | 3205 | xpm_color_cache = xzalloc (nbytes); |
4ef0d4d0 KS |
3206 | init_color_table (); |
3207 | ||
3208 | if (attrs->valuemask & XpmColorSymbols) | |
3209 | { | |
3210 | int i; | |
3211 | XColor color; | |
3212 | ||
3213 | for (i = 0; i < attrs->numsymbols; ++i) | |
3214 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3215 | attrs->colorsymbols[i].value, &color)) | |
3216 | { | |
3217 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3218 | color.blue); | |
3219 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3220 | } | |
3221 | } | |
3222 | } | |
3223 | ||
3224 | /* Free the color cache. */ | |
3225 | ||
3226 | static void | |
d3da34e0 | 3227 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3228 | { |
3229 | struct xpm_cached_color *p, *next; | |
3230 | int i; | |
3231 | ||
3232 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3233 | for (p = xpm_color_cache[i]; p; p = next) | |
3234 | { | |
3235 | next = p->next; | |
3236 | xfree (p); | |
3237 | } | |
3238 | ||
3239 | xfree (xpm_color_cache); | |
3240 | xpm_color_cache = NULL; | |
3241 | free_color_table (); | |
3242 | } | |
3243 | ||
3244 | /* Return the bucket index for color named COLOR_NAME in the color | |
3245 | cache. */ | |
3246 | ||
3247 | static int | |
d3da34e0 | 3248 | xpm_color_bucket (char *color_name) |
4ef0d4d0 | 3249 | { |
3f791afe PE |
3250 | EMACS_UINT hash = hash_string (color_name, strlen (color_name)); |
3251 | return hash % XPM_COLOR_CACHE_BUCKETS; | |
4ef0d4d0 KS |
3252 | } |
3253 | ||
3254 | ||
3255 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3256 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3257 | entry added. */ | |
3258 | ||
3259 | static struct xpm_cached_color * | |
d3da34e0 | 3260 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3261 | { |
3262 | size_t nbytes; | |
3263 | struct xpm_cached_color *p; | |
3264 | ||
3265 | if (bucket < 0) | |
3266 | bucket = xpm_color_bucket (color_name); | |
3267 | ||
3f791afe | 3268 | nbytes = offsetof (struct xpm_cached_color, name) + strlen (color_name) + 1; |
23f86fce | 3269 | p = xmalloc (nbytes); |
4ef0d4d0 KS |
3270 | strcpy (p->name, color_name); |
3271 | p->color = *color; | |
3272 | p->next = xpm_color_cache[bucket]; | |
3273 | xpm_color_cache[bucket] = p; | |
3274 | return p; | |
3275 | } | |
3276 | ||
3277 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3278 | return the cached definition in *COLOR. Otherwise, make a new | |
578098f3 | 3279 | entry in the cache and allocate the color. Value is false if color |
4ef0d4d0 KS |
3280 | allocation failed. */ |
3281 | ||
578098f3 | 3282 | static bool |
d3da34e0 | 3283 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3284 | { |
3285 | struct xpm_cached_color *p; | |
3286 | int h = xpm_color_bucket (color_name); | |
3287 | ||
3288 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3289 | if (strcmp (p->name, color_name) == 0) | |
3290 | break; | |
3291 | ||
3292 | if (p != NULL) | |
3293 | *color = p->color; | |
3294 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3295 | color_name, color)) | |
3296 | { | |
3297 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3298 | color->blue); | |
3299 | p = xpm_cache_color (f, color_name, color, h); | |
3300 | } | |
3301 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3302 | with transparency, and it's useful. */ | |
3303 | else if (strcmp ("opaque", color_name) == 0) | |
3304 | { | |
72af86bd | 3305 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3306 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3307 | p = xpm_cache_color (f, color_name, color, h); | |
3308 | } | |
3309 | ||
3310 | return p != NULL; | |
3311 | } | |
3312 | ||
3313 | ||
3314 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3315 | CLOSURE is a pointer to the frame on which we allocate the | |
3316 | color. Return in *COLOR the allocated color. Value is non-zero | |
3317 | if successful. */ | |
3318 | ||
3319 | static int | |
d3da34e0 JB |
3320 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3321 | void *closure) | |
4ef0d4d0 | 3322 | { |
7d652d97 | 3323 | return xpm_lookup_color (closure, color_name, color); |
4ef0d4d0 KS |
3324 | } |
3325 | ||
3326 | ||
3327 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3328 | is a pointer to the frame on which we allocate the color. Value is | |
3329 | non-zero if successful. */ | |
3330 | ||
3331 | static int | |
d3da34e0 | 3332 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3333 | { |
3334 | return 1; | |
3335 | } | |
3336 | ||
3337 | #endif /* ALLOC_XPM_COLORS */ | |
3338 | ||
3339 | ||
0fda9b75 | 3340 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
3341 | |
3342 | /* XPM library details. */ | |
3343 | ||
14beddf4 CY |
3344 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3345 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3346 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3347 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3348 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3349 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3350 | |
578098f3 | 3351 | static bool |
d07ff9db | 3352 | init_xpm_functions (void) |
4ef0d4d0 KS |
3353 | { |
3354 | HMODULE library; | |
3355 | ||
d07ff9db | 3356 | if (!(library = w32_delayed_load (Qxpm))) |
4ef0d4d0 KS |
3357 | return 0; |
3358 | ||
3359 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3360 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3361 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3362 | LOAD_IMGLIB_FN (library, XImageFree); | |
3363 | return 1; | |
3364 | } | |
3365 | ||
0fda9b75 | 3366 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 3367 | |
a9e7a9d5 | 3368 | #if defined HAVE_NTGUI && !defined WINDOWSNT |
0fda9b75 DC |
3369 | /* Glue for code below */ |
3370 | #define fn_XpmReadFileToImage XpmReadFileToImage | |
3371 | #define fn_XpmCreateImageFromBuffer XpmCreateImageFromBuffer | |
3372 | #define fn_XImageFree XImageFree | |
3373 | #define fn_XpmFreeAttributes XpmFreeAttributes | |
2ae3a8a7 | 3374 | #endif /* HAVE_NTGUI && !WINDOWSNT */ |
4ef0d4d0 | 3375 | |
578098f3 | 3376 | /* Value is true if COLOR_SYMBOLS is a valid color symbols list |
4ef0d4d0 KS |
3377 | for XPM images. Such a list must consist of conses whose car and |
3378 | cdr are strings. */ | |
3379 | ||
578098f3 | 3380 | static bool |
d3da34e0 | 3381 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3382 | { |
3383 | while (CONSP (color_symbols)) | |
3384 | { | |
3385 | Lisp_Object sym = XCAR (color_symbols); | |
3386 | if (!CONSP (sym) | |
3387 | || !STRINGP (XCAR (sym)) | |
3388 | || !STRINGP (XCDR (sym))) | |
3389 | break; | |
3390 | color_symbols = XCDR (color_symbols); | |
3391 | } | |
3392 | ||
3393 | return NILP (color_symbols); | |
3394 | } | |
3395 | ||
3396 | ||
578098f3 | 3397 | /* Value is true if OBJECT is a valid XPM image specification. */ |
4ef0d4d0 | 3398 | |
578098f3 | 3399 | static bool |
d3da34e0 | 3400 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3401 | { |
3402 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3403 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3404 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3405 | /* Either `:file' or `:data' must be present. */ | |
3406 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3407 | /* Either no `:color-symbols' or it's a list of conses | |
3408 | whose car and cdr are strings. */ | |
3409 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3410 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3411 | } | |
3412 | ||
9e2a2647 | 3413 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3414 | |
cd44d2eb | 3415 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
0766b489 | 3416 | ptrdiff_t |
ef1b0ba7 | 3417 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 | 3418 | { |
aad3612f | 3419 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
0766b489 PE |
3420 | ptrdiff_t id; |
3421 | int rc; | |
786a43d6 CY |
3422 | XpmAttributes attrs; |
3423 | Pixmap bitmap, mask; | |
3424 | ||
72af86bd | 3425 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3426 | |
54188d8f CY |
3427 | attrs.visual = FRAME_X_VISUAL (f); |
3428 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3429 | attrs.valuemask |= XpmVisual; | |
3430 | attrs.valuemask |= XpmColormap; | |
3431 | ||
786a43d6 | 3432 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3433 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3434 | if (rc != XpmSuccess) |
fe45ad15 CY |
3435 | { |
3436 | XpmFreeAttributes (&attrs); | |
3437 | return -1; | |
3438 | } | |
786a43d6 CY |
3439 | |
3440 | id = x_allocate_bitmap_record (f); | |
786a43d6 | 3441 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
96c06863 | 3442 | dpyinfo->bitmaps[id - 1].have_mask = true; |
786a43d6 CY |
3443 | dpyinfo->bitmaps[id - 1].mask = mask; |
3444 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3445 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3446 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3447 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3448 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3449 | ||
3450 | XpmFreeAttributes (&attrs); | |
3451 | return id; | |
3452 | } | |
0d876a14 | 3453 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3454 | |
4ef0d4d0 | 3455 | /* Load image IMG which will be displayed on frame F. Value is |
578098f3 | 3456 | true if successful. */ |
4ef0d4d0 | 3457 | |
ea1aaa6f ST |
3458 | #ifdef HAVE_XPM |
3459 | ||
578098f3 | 3460 | static bool |
d3da34e0 | 3461 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3462 | { |
3463 | int rc; | |
3464 | XpmAttributes attrs; | |
3465 | Lisp_Object specified_file, color_symbols; | |
3466 | #ifdef HAVE_NTGUI | |
3467 | HDC hdc; | |
3468 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3469 | #endif /* HAVE_NTGUI */ | |
3470 | ||
3471 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3472 | close colors. Return colors allocated. */ | |
72af86bd | 3473 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3474 | |
3475 | #ifndef HAVE_NTGUI | |
3476 | attrs.visual = FRAME_X_VISUAL (f); | |
3477 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3478 | attrs.valuemask |= XpmVisual; | |
3479 | attrs.valuemask |= XpmColormap; | |
3480 | #endif /* HAVE_NTGUI */ | |
3481 | ||
3482 | #ifdef ALLOC_XPM_COLORS | |
3483 | /* Allocate colors with our own functions which handle | |
3484 | failing color allocation more gracefully. */ | |
3485 | attrs.color_closure = f; | |
3486 | attrs.alloc_color = xpm_alloc_color; | |
3487 | attrs.free_colors = xpm_free_colors; | |
3488 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3489 | #else /* not ALLOC_XPM_COLORS */ | |
3490 | /* Let the XPM lib allocate colors. */ | |
3491 | attrs.valuemask |= XpmReturnAllocPixels; | |
3492 | #ifdef XpmAllocCloseColors | |
3493 | attrs.alloc_close_colors = 1; | |
3494 | attrs.valuemask |= XpmAllocCloseColors; | |
3495 | #else /* not XpmAllocCloseColors */ | |
3496 | attrs.closeness = 600; | |
3497 | attrs.valuemask |= XpmCloseness; | |
3498 | #endif /* not XpmAllocCloseColors */ | |
3499 | #endif /* ALLOC_XPM_COLORS */ | |
3500 | ||
3501 | /* If image specification contains symbolic color definitions, add | |
3502 | these to `attrs'. */ | |
3503 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3504 | if (CONSP (color_symbols)) | |
3505 | { | |
3506 | Lisp_Object tail; | |
3507 | XpmColorSymbol *xpm_syms; | |
3508 | int i, size; | |
3509 | ||
3510 | attrs.valuemask |= XpmColorSymbols; | |
3511 | ||
3512 | /* Count number of symbols. */ | |
3513 | attrs.numsymbols = 0; | |
3514 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3515 | ++attrs.numsymbols; | |
3516 | ||
3517 | /* Allocate an XpmColorSymbol array. */ | |
3518 | size = attrs.numsymbols * sizeof *xpm_syms; | |
38182d90 | 3519 | xpm_syms = alloca (size); |
72af86bd | 3520 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3521 | attrs.colorsymbols = xpm_syms; |
3522 | ||
3523 | /* Fill the color symbol array. */ | |
3524 | for (tail = color_symbols, i = 0; | |
3525 | CONSP (tail); | |
3526 | ++i, tail = XCDR (tail)) | |
3527 | { | |
7574650a AS |
3528 | Lisp_Object name; |
3529 | Lisp_Object color; | |
e22cffbc | 3530 | char *empty_string = (char *) ""; |
7574650a AS |
3531 | |
3532 | if (!CONSP (XCAR (tail))) | |
3533 | { | |
e22cffbc PE |
3534 | xpm_syms[i].name = empty_string; |
3535 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3536 | continue; |
3537 | } | |
3538 | name = XCAR (XCAR (tail)); | |
3539 | color = XCDR (XCAR (tail)); | |
3540 | if (STRINGP (name)) | |
3541 | { | |
38182d90 | 3542 | xpm_syms[i].name = alloca (SCHARS (name) + 1); |
42a5b22f | 3543 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3544 | } |
3545 | else | |
e22cffbc | 3546 | xpm_syms[i].name = empty_string; |
7574650a AS |
3547 | if (STRINGP (color)) |
3548 | { | |
38182d90 | 3549 | xpm_syms[i].value = alloca (SCHARS (color) + 1); |
42a5b22f | 3550 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3551 | } |
3552 | else | |
e22cffbc | 3553 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3554 | } |
3555 | } | |
3556 | ||
3557 | /* Create a pixmap for the image, either from a file, or from a | |
3558 | string buffer containing data in the same format as an XPM file. */ | |
3559 | #ifdef ALLOC_XPM_COLORS | |
3560 | xpm_init_color_cache (f, &attrs); | |
3561 | #endif | |
3562 | ||
3563 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3564 | ||
3565 | #ifdef HAVE_NTGUI | |
3566 | { | |
3567 | HDC frame_dc = get_frame_dc (f); | |
3568 | hdc = CreateCompatibleDC (frame_dc); | |
3569 | release_frame_dc (f, frame_dc); | |
3570 | } | |
3571 | #endif /* HAVE_NTGUI */ | |
3572 | ||
3573 | if (STRINGP (specified_file)) | |
3574 | { | |
3575 | Lisp_Object file = x_find_image_file (specified_file); | |
3576 | if (!STRINGP (file)) | |
3577 | { | |
3578 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3579 | #ifdef ALLOC_XPM_COLORS |
3580 | xpm_free_color_cache (); | |
3581 | #endif | |
4ef0d4d0 KS |
3582 | return 0; |
3583 | } | |
3584 | ||
3585 | #ifdef HAVE_NTGUI | |
9ab69568 EZ |
3586 | #ifdef WINDOWSNT |
3587 | /* FILE is encoded in UTF-8, but image libraries on Windows | |
3588 | support neither UTF-8 nor UTF-16 encoded file names. So we | |
3589 | need to re-encode it in ANSI. */ | |
3590 | file = ansi_encode_filename (file); | |
3591 | #endif | |
4ef0d4d0 KS |
3592 | /* XpmReadFileToPixmap is not available in the Windows port of |
3593 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3594 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3595 | &xpm_image, &xpm_mask, | |
3596 | &attrs); | |
3597 | #else | |
547c9269 YM |
3598 | rc = XpmReadFileToImage (FRAME_X_DISPLAY (f), SSDATA (file), |
3599 | &img->ximg, &img->mask_img, | |
3600 | &attrs); | |
4ef0d4d0 KS |
3601 | #endif /* HAVE_NTGUI */ |
3602 | } | |
3603 | else | |
3604 | { | |
3605 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3606 | if (!STRINGP (buffer)) |
3607 | { | |
3608 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3609 | #ifdef ALLOC_XPM_COLORS | |
3610 | xpm_free_color_cache (); | |
3611 | #endif | |
3612 | return 0; | |
3613 | } | |
4ef0d4d0 KS |
3614 | #ifdef HAVE_NTGUI |
3615 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3616 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3617 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3618 | &xpm_image, &xpm_mask, | |
3619 | &attrs); | |
3620 | #else | |
547c9269 YM |
3621 | rc = XpmCreateImageFromBuffer (FRAME_X_DISPLAY (f), SSDATA (buffer), |
3622 | &img->ximg, &img->mask_img, | |
3623 | &attrs); | |
4ef0d4d0 KS |
3624 | #endif /* HAVE_NTGUI */ |
3625 | } | |
3626 | ||
547c9269 YM |
3627 | #ifdef HAVE_X_WINDOWS |
3628 | if (rc == XpmSuccess) | |
3629 | { | |
3630 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
3631 | img->ximg->width, img->ximg->height, | |
3632 | img->ximg->depth); | |
3633 | if (img->pixmap == NO_PIXMAP) | |
3634 | { | |
3635 | x_clear_image (f, img); | |
3636 | rc = XpmNoMemory; | |
3637 | } | |
3638 | else if (img->mask_img) | |
3639 | { | |
3640 | img->mask = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
3641 | img->mask_img->width, | |
3642 | img->mask_img->height, | |
3643 | img->mask_img->depth); | |
3644 | if (img->mask == NO_PIXMAP) | |
3645 | { | |
3646 | x_clear_image (f, img); | |
3647 | rc = XpmNoMemory; | |
3648 | } | |
3649 | } | |
3650 | } | |
3651 | #endif | |
3652 | ||
4ef0d4d0 KS |
3653 | if (rc == XpmSuccess) |
3654 | { | |
3655 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3656 | img->colors = colors_in_color_table (&img->ncolors); | |
3657 | #else /* not ALLOC_XPM_COLORS */ | |
3658 | int i; | |
3659 | ||
3660 | #ifdef HAVE_NTGUI | |
3661 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3662 | plus some duplicate attributes. */ | |
3663 | if (xpm_image && xpm_image->bitmap) | |
3664 | { | |
3665 | img->pixmap = xpm_image->bitmap; | |
3666 | /* XImageFree in libXpm frees XImage struct without destroying | |
3667 | the bitmap, which is what we want. */ | |
3668 | fn_XImageFree (xpm_image); | |
3669 | } | |
3670 | if (xpm_mask && xpm_mask->bitmap) | |
3671 | { | |
3672 | /* The mask appears to be inverted compared with what we expect. | |
3673 | TODO: invert our expectations. See other places where we | |
3674 | have to invert bits because our idea of masks is backwards. */ | |
3675 | HGDIOBJ old_obj; | |
3676 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3677 | ||
3678 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3679 | SelectObject (hdc, old_obj); | |
3680 | ||
3681 | img->mask = xpm_mask->bitmap; | |
3682 | fn_XImageFree (xpm_mask); | |
3683 | DeleteDC (hdc); | |
3684 | } | |
3685 | ||
3686 | DeleteDC (hdc); | |
3687 | #endif /* HAVE_NTGUI */ | |
3688 | ||
3689 | /* Remember allocated colors. */ | |
c1ade6f7 RT |
3690 | img->colors = xnmalloc_atomic (attrs.nalloc_pixels, |
3691 | sizeof *img->colors); | |
ddff3151 | 3692 | img->ncolors = attrs.nalloc_pixels; |
4ef0d4d0 KS |
3693 | for (i = 0; i < attrs.nalloc_pixels; ++i) |
3694 | { | |
3695 | img->colors[i] = attrs.alloc_pixels[i]; | |
3696 | #ifdef DEBUG_X_COLORS | |
3697 | register_color (img->colors[i]); | |
3698 | #endif | |
3699 | } | |
3700 | #endif /* not ALLOC_XPM_COLORS */ | |
3701 | ||
3702 | img->width = attrs.width; | |
3703 | img->height = attrs.height; | |
a54e2c05 | 3704 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
3705 | |
3706 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3707 | #ifdef HAVE_NTGUI | |
3708 | fn_XpmFreeAttributes (&attrs); | |
3709 | #else | |
3710 | XpmFreeAttributes (&attrs); | |
3711 | #endif /* HAVE_NTGUI */ | |
547c9269 YM |
3712 | |
3713 | #ifdef HAVE_X_WINDOWS | |
3714 | /* Maybe fill in the background field while we have ximg handy. */ | |
3715 | IMAGE_BACKGROUND (img, f, img->ximg); | |
3716 | if (img->mask_img) | |
3717 | /* Fill in the background_transparent field while we have the | |
3718 | mask handy. */ | |
3719 | image_background_transparent (img, f, img->mask_img); | |
3720 | #endif | |
4ef0d4d0 KS |
3721 | } |
3722 | else | |
3723 | { | |
3724 | #ifdef HAVE_NTGUI | |
3725 | DeleteDC (hdc); | |
3726 | #endif /* HAVE_NTGUI */ | |
3727 | ||
3728 | switch (rc) | |
3729 | { | |
3730 | case XpmOpenFailed: | |
3731 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3732 | break; | |
3733 | ||
3734 | case XpmFileInvalid: | |
3735 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3736 | break; | |
3737 | ||
3738 | case XpmNoMemory: | |
3739 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3740 | break; | |
3741 | ||
3742 | case XpmColorFailed: | |
3743 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3744 | break; | |
3745 | ||
3746 | default: | |
3747 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3748 | break; | |
3749 | } | |
3750 | } | |
3751 | ||
3752 | #ifdef ALLOC_XPM_COLORS | |
3753 | xpm_free_color_cache (); | |
3754 | #endif | |
3755 | return rc == XpmSuccess; | |
3756 | } | |
3757 | ||
3758 | #endif /* HAVE_XPM */ | |
3759 | ||
9e2a2647 | 3760 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3761 | |
9e2a2647 | 3762 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3763 | Only XPM version 3 (without any extensions) is supported. */ |
3764 | ||
f57e2426 J |
3765 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, |
3766 | int, Lisp_Object); | |
3767 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3768 | const unsigned char *, int); | |
f57e2426 J |
3769 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, |
3770 | int, Lisp_Object); | |
3771 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3772 | const unsigned char *, int); | |
ea1aaa6f ST |
3773 | |
3774 | /* Tokens returned from xpm_scan. */ | |
3775 | ||
3776 | enum xpm_token | |
3777 | { | |
3778 | XPM_TK_IDENT = 256, | |
3779 | XPM_TK_STRING, | |
3780 | XPM_TK_EOF | |
3781 | }; | |
3782 | ||
3783 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3784 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3785 | the end (exclusive) addresses of the data, respectively. Advance | |
3786 | *S while scanning. If token is either XPM_TK_IDENT or | |
3787 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3788 | length of the corresponding token, respectively. */ | |
3789 | ||
3790 | static int | |
3d608a86 J |
3791 | xpm_scan (const unsigned char **s, |
3792 | const unsigned char *end, | |
3793 | const unsigned char **beg, | |
74ca2eb3 | 3794 | ptrdiff_t *len) |
ea1aaa6f ST |
3795 | { |
3796 | int c; | |
3797 | ||
3798 | while (*s < end) | |
3799 | { | |
3800 | /* Skip white-space. */ | |
620f13b0 | 3801 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
9ecf6403 | 3802 | ; |
ea1aaa6f ST |
3803 | |
3804 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3805 | sb-dir-plus.xpm uses '+' in its identifier. */ |
620f13b0 | 3806 | if (c_isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3807 | { |
3808 | *beg = *s - 1; | |
2ff0845e | 3809 | while (*s < end |
620f13b0 PE |
3810 | && (c = **s, c_isalnum (c) |
3811 | || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3812 | ++*s; |
3813 | *len = *s - *beg; | |
3814 | return XPM_TK_IDENT; | |
3815 | } | |
ea1aaa6f | 3816 | else if (c == '"') |
9ecf6403 YM |
3817 | { |
3818 | *beg = *s; | |
3819 | while (*s < end && **s != '"') | |
3820 | ++*s; | |
3821 | *len = *s - *beg; | |
3822 | if (*s < end) | |
3823 | ++*s; | |
3824 | return XPM_TK_STRING; | |
3825 | } | |
ea1aaa6f | 3826 | else if (c == '/') |
9ecf6403 YM |
3827 | { |
3828 | if (*s < end && **s == '*') | |
3829 | { | |
3830 | /* C-style comment. */ | |
3831 | ++*s; | |
3832 | do | |
3833 | { | |
3834 | while (*s < end && *(*s)++ != '*') | |
3835 | ; | |
3836 | } | |
3837 | while (*s < end && **s != '/'); | |
3838 | if (*s < end) | |
3839 | ++*s; | |
3840 | } | |
3841 | else | |
3842 | return c; | |
3843 | } | |
ea1aaa6f | 3844 | else |
9ecf6403 | 3845 | return c; |
ea1aaa6f ST |
3846 | } |
3847 | ||
3848 | return XPM_TK_EOF; | |
3849 | } | |
3850 | ||
bbe6f2aa | 3851 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3852 | specifying the color of each pixel in XPM data. A value is either |
3853 | an integer that specifies a pixel color, Qt that specifies | |
3854 | transparency, or Qnil for the unspecified color. If the length of | |
3855 | the key string is one, a vector is used as a table. Otherwise, a | |
3856 | hash table is used. */ | |
3857 | ||
3858 | static Lisp_Object | |
3d608a86 J |
3859 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3860 | const unsigned char *, | |
3861 | int, | |
3862 | Lisp_Object), | |
3863 | Lisp_Object (**get_func) (Lisp_Object, | |
3864 | const unsigned char *, | |
3865 | int)) | |
ea1aaa6f ST |
3866 | { |
3867 | *put_func = xpm_put_color_table_v; | |
3868 | *get_func = xpm_get_color_table_v; | |
3869 | return Fmake_vector (make_number (256), Qnil); | |
3870 | } | |
3871 | ||
3872 | static void | |
3d608a86 J |
3873 | xpm_put_color_table_v (Lisp_Object color_table, |
3874 | const unsigned char *chars_start, | |
3875 | int chars_len, | |
3876 | Lisp_Object color) | |
ea1aaa6f | 3877 | { |
28be1ada | 3878 | ASET (color_table, *chars_start, color); |
ea1aaa6f ST |
3879 | } |
3880 | ||
3881 | static Lisp_Object | |
3d608a86 J |
3882 | xpm_get_color_table_v (Lisp_Object color_table, |
3883 | const unsigned char *chars_start, | |
3884 | int chars_len) | |
ea1aaa6f | 3885 | { |
28be1ada | 3886 | return AREF (color_table, *chars_start); |
ea1aaa6f ST |
3887 | } |
3888 | ||
3889 | static Lisp_Object | |
3d608a86 J |
3890 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3891 | const unsigned char *, | |
3892 | int, | |
3893 | Lisp_Object), | |
3894 | Lisp_Object (**get_func) (Lisp_Object, | |
3895 | const unsigned char *, | |
3896 | int)) | |
ea1aaa6f ST |
3897 | { |
3898 | *put_func = xpm_put_color_table_h; | |
3899 | *get_func = xpm_get_color_table_h; | |
4ab15c3e | 3900 | return make_hash_table (hashtest_equal, make_number (DEFAULT_HASH_SIZE), |
9ecf6403 YM |
3901 | make_float (DEFAULT_REHASH_SIZE), |
3902 | make_float (DEFAULT_REHASH_THRESHOLD), | |
a23c4171 | 3903 | Qnil); |
ea1aaa6f ST |
3904 | } |
3905 | ||
3906 | static void | |
3d608a86 J |
3907 | xpm_put_color_table_h (Lisp_Object color_table, |
3908 | const unsigned char *chars_start, | |
3909 | int chars_len, | |
3910 | Lisp_Object color) | |
ea1aaa6f ST |
3911 | { |
3912 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3913 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3914 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3915 | ||
3916 | hash_lookup (table, chars, &hash_code); | |
3917 | hash_put (table, chars, color, hash_code); | |
3918 | } | |
3919 | ||
3920 | static Lisp_Object | |
3d608a86 J |
3921 | xpm_get_color_table_h (Lisp_Object color_table, |
3922 | const unsigned char *chars_start, | |
3923 | int chars_len) | |
ea1aaa6f ST |
3924 | { |
3925 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
d3411f89 PE |
3926 | ptrdiff_t i = |
3927 | hash_lookup (table, make_unibyte_string (chars_start, chars_len), NULL); | |
ea1aaa6f ST |
3928 | |
3929 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3930 | } | |
3931 | ||
3932 | enum xpm_color_key { | |
3933 | XPM_COLOR_KEY_S, | |
3934 | XPM_COLOR_KEY_M, | |
3935 | XPM_COLOR_KEY_G4, | |
3936 | XPM_COLOR_KEY_G, | |
3937 | XPM_COLOR_KEY_C | |
3938 | }; | |
3939 | ||
46accb8f | 3940 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3941 | |
3942 | static int | |
3d608a86 | 3943 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3944 | { |
3945 | int i; | |
3946 | ||
c72d972c | 3947 | for (i = 0; i < ARRAYELTS (xpm_color_key_strings); i++) |
ea1aaa6f ST |
3948 | if (strcmp (xpm_color_key_strings[i], s) == 0) |
3949 | return i; | |
3950 | return -1; | |
3951 | } | |
3952 | ||
578098f3 | 3953 | static bool |
3d608a86 J |
3954 | xpm_load_image (struct frame *f, |
3955 | struct image *img, | |
3956 | const unsigned char *contents, | |
3957 | const unsigned char *end) | |
ea1aaa6f | 3958 | { |
46accb8f | 3959 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3960 | unsigned char buffer[BUFSIZ]; |
3961 | int width, height, x, y; | |
3962 | int num_colors, chars_per_pixel; | |
74ca2eb3 PE |
3963 | ptrdiff_t len; |
3964 | int LA1; | |
46accb8f YM |
3965 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3966 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f | 3967 | Lisp_Object frame, color_symbols, color_table; |
578098f3 | 3968 | int best_key; |
96c06863 | 3969 | bool have_mask = false; |
ea1aaa6f ST |
3970 | XImagePtr ximg = NULL, mask_img = NULL; |
3971 | ||
3972 | #define match() \ | |
3973 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3974 | ||
9ecf6403 | 3975 | #define expect(TOKEN) \ |
f462f075 PE |
3976 | do \ |
3977 | { \ | |
3978 | if (LA1 != (TOKEN)) \ | |
3979 | goto failure; \ | |
3980 | match (); \ | |
3981 | } \ | |
3982 | while (0) | |
ea1aaa6f | 3983 | |
9ecf6403 | 3984 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3985 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3986 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3987 | match (); \ | |
3988 | else \ | |
ea1aaa6f ST |
3989 | goto failure |
3990 | ||
3991 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3992 | goto failure; | |
3993 | s += 9; | |
ed3751c8 | 3994 | match (); |
ea1aaa6f ST |
3995 | expect_ident ("static"); |
3996 | expect_ident ("char"); | |
3997 | expect ('*'); | |
3998 | expect (XPM_TK_IDENT); | |
3999 | expect ('['); | |
4000 | expect (']'); | |
4001 | expect ('='); | |
4002 | expect ('{'); | |
4003 | expect (XPM_TK_STRING); | |
4004 | if (len >= BUFSIZ) | |
4005 | goto failure; | |
4006 | memcpy (buffer, beg, len); | |
4007 | buffer[len] = '\0'; | |
4008 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 4009 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
4010 | || width <= 0 || height <= 0 |
4011 | || num_colors <= 0 || chars_per_pixel <= 0) | |
4012 | goto failure; | |
de297941 YM |
4013 | |
4014 | if (!check_image_size (f, width, height)) | |
4015 | { | |
10ea2b82 | 4016 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
4017 | goto failure; |
4018 | } | |
4019 | ||
547c9269 | 4020 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0) |
ca4aa935 | 4021 | #ifndef HAVE_NS |
547c9269 YM |
4022 | || !image_create_x_image_and_pixmap (f, img, width, height, 1, |
4023 | &mask_img, 1) | |
ca4aa935 PE |
4024 | #endif |
4025 | ) | |
4026 | { | |
4027 | image_error ("Image too large", Qnil, Qnil); | |
4028 | goto failure; | |
4029 | } | |
4030 | ||
ea1aaa6f ST |
4031 | expect (','); |
4032 | ||
4033 | XSETFRAME (frame, f); | |
4034 | if (!NILP (Fxw_display_color_p (frame))) | |
4035 | best_key = XPM_COLOR_KEY_C; | |
4036 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
4037 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 4038 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
4039 | else |
4040 | best_key = XPM_COLOR_KEY_M; | |
4041 | ||
4042 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
4043 | if (chars_per_pixel == 1) | |
4044 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 4045 | &get_color_table); |
ea1aaa6f ST |
4046 | else |
4047 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 4048 | &get_color_table); |
ea1aaa6f ST |
4049 | |
4050 | while (num_colors-- > 0) | |
4051 | { | |
25a48bd0 | 4052 | char *color, *max_color; |
ea1aaa6f ST |
4053 | int key, next_key, max_key = 0; |
4054 | Lisp_Object symbol_color = Qnil, color_val; | |
4055 | XColor cdef; | |
4056 | ||
4057 | expect (XPM_TK_STRING); | |
4058 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 4059 | goto failure; |
ea1aaa6f ST |
4060 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
4061 | buffer[len - chars_per_pixel] = '\0'; | |
4062 | ||
4063 | str = strtok (buffer, " \t"); | |
4064 | if (str == NULL) | |
9ecf6403 | 4065 | goto failure; |
ea1aaa6f ST |
4066 | key = xpm_str_to_color_key (str); |
4067 | if (key < 0) | |
9ecf6403 | 4068 | goto failure; |
ea1aaa6f | 4069 | do |
9ecf6403 YM |
4070 | { |
4071 | color = strtok (NULL, " \t"); | |
4072 | if (color == NULL) | |
4073 | goto failure; | |
ea1aaa6f | 4074 | |
9db94f82 | 4075 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
4076 | { |
4077 | next_key = xpm_str_to_color_key (str); | |
4078 | if (next_key >= 0) | |
4079 | break; | |
4080 | color[strlen (color)] = ' '; | |
4081 | } | |
ea1aaa6f | 4082 | |
9ecf6403 YM |
4083 | if (key == XPM_COLOR_KEY_S) |
4084 | { | |
4085 | if (NILP (symbol_color)) | |
4086 | symbol_color = build_string (color); | |
4087 | } | |
4088 | else if (max_key < key && key <= best_key) | |
4089 | { | |
4090 | max_key = key; | |
4091 | max_color = color; | |
4092 | } | |
4093 | key = next_key; | |
4094 | } | |
ea1aaa6f ST |
4095 | while (str); |
4096 | ||
4097 | color_val = Qnil; | |
4098 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
4099 | { |
4100 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
4101 | ||
4102 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 4103 | { |
25a48bd0 | 4104 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 | 4105 | color_val = Qt; |
6045c4fd | 4106 | else if (x_defined_color (f, SSDATA (XCDR (specified_color)), |
9db94f82 YM |
4107 | &cdef, 0)) |
4108 | color_val = make_number (cdef.pixel); | |
4109 | } | |
9ecf6403 | 4110 | } |
ea1aaa6f | 4111 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 4112 | { |
05131107 | 4113 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
4114 | color_val = Qt; |
4115 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
4116 | color_val = make_number (cdef.pixel); | |
4117 | } | |
ea1aaa6f | 4118 | if (!NILP (color_val)) |
9ecf6403 | 4119 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
4120 | |
4121 | expect (','); | |
4122 | } | |
4123 | ||
ea1aaa6f ST |
4124 | for (y = 0; y < height; y++) |
4125 | { | |
4126 | expect (XPM_TK_STRING); | |
4127 | str = beg; | |
4128 | if (len < width * chars_per_pixel) | |
9ecf6403 | 4129 | goto failure; |
ea1aaa6f | 4130 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
4131 | { |
4132 | Lisp_Object color_val = | |
4133 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4134 | ||
4135 | XPutPixel (ximg, x, y, | |
4136 | (INTEGERP (color_val) ? XINT (color_val) | |
4137 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 4138 | #ifndef HAVE_NS |
9ecf6403 YM |
4139 | XPutPixel (mask_img, x, y, |
4140 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
96c06863 | 4141 | : (have_mask = true, PIX_MASK_RETAIN))); |
edfda783 | 4142 | #else |
ed3751c8 JB |
4143 | if (EQ (color_val, Qt)) |
4144 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 4145 | #endif |
9ecf6403 | 4146 | } |
ea1aaa6f | 4147 | if (y + 1 < height) |
9ecf6403 | 4148 | expect (','); |
ea1aaa6f ST |
4149 | } |
4150 | ||
4151 | img->width = width; | |
4152 | img->height = height; | |
4153 | ||
0b8ac842 YM |
4154 | /* Maybe fill in the background field while we have ximg handy. */ |
4155 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4156 | IMAGE_BACKGROUND (img, f, ximg); | |
4157 | ||
547c9269 | 4158 | image_put_x_image (f, img, ximg, 0); |
edfda783 | 4159 | #ifndef HAVE_NS |
ea1aaa6f ST |
4160 | if (have_mask) |
4161 | { | |
9ecf6403 YM |
4162 | /* Fill in the background_transparent field while we have the |
4163 | mask handy. */ | |
4164 | image_background_transparent (img, f, mask_img); | |
4165 | ||
547c9269 | 4166 | image_put_x_image (f, img, mask_img, 1); |
ea1aaa6f ST |
4167 | } |
4168 | else | |
4169 | { | |
4170 | x_destroy_x_image (mask_img); | |
547c9269 | 4171 | x_clear_image_1 (f, img, CLEAR_IMAGE_MASK); |
ea1aaa6f | 4172 | } |
edfda783 | 4173 | #endif |
ea1aaa6f ST |
4174 | return 1; |
4175 | ||
4176 | failure: | |
4177 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
ea1aaa6f ST |
4178 | x_destroy_x_image (ximg); |
4179 | x_destroy_x_image (mask_img); | |
4180 | x_clear_image (f, img); | |
4181 | return 0; | |
4182 | ||
4183 | #undef match | |
4184 | #undef expect | |
4185 | #undef expect_ident | |
4186 | } | |
4187 | ||
578098f3 | 4188 | static bool |
3d608a86 J |
4189 | xpm_load (struct frame *f, |
4190 | struct image *img) | |
ea1aaa6f | 4191 | { |
578098f3 | 4192 | bool success_p = 0; |
ea1aaa6f ST |
4193 | Lisp_Object file_name; |
4194 | ||
4195 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4196 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4197 | if (STRINGP (file_name)) | |
4198 | { | |
4199 | Lisp_Object file; | |
4200 | unsigned char *contents; | |
dd52fcea | 4201 | ptrdiff_t size; |
ea1aaa6f ST |
4202 | |
4203 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4204 | if (!STRINGP (file)) |
9ecf6403 YM |
4205 | { |
4206 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4207 | return 0; |
4208 | } | |
ea1aaa6f | 4209 | |
6045c4fd | 4210 | contents = slurp_file (SSDATA (file), &size); |
ea1aaa6f | 4211 | if (contents == NULL) |
9ecf6403 YM |
4212 | { |
4213 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4214 | return 0; |
4215 | } | |
ea1aaa6f ST |
4216 | |
4217 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4218 | xfree (contents); | |
ea1aaa6f ST |
4219 | } |
4220 | else | |
4221 | { | |
4222 | Lisp_Object data; | |
4223 | ||
4224 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4225 | if (!STRINGP (data)) |
4226 | { | |
4227 | image_error ("Invalid image data `%s'", data, Qnil); | |
4228 | return 0; | |
4229 | } | |
ea1aaa6f | 4230 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4231 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4232 | } |
4233 | ||
4234 | return success_p; | |
4235 | } | |
4236 | ||
9e2a2647 | 4237 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4238 | |
ea1aaa6f | 4239 | |
4ef0d4d0 KS |
4240 | \f |
4241 | /*********************************************************************** | |
4242 | Color table | |
4243 | ***********************************************************************/ | |
4244 | ||
4245 | #ifdef COLOR_TABLE_SUPPORT | |
4246 | ||
4247 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4248 | ||
4249 | struct ct_color | |
4250 | { | |
4251 | int r, g, b; | |
4252 | unsigned long pixel; | |
4253 | ||
4254 | /* Next in color table collision list. */ | |
4255 | struct ct_color *next; | |
4256 | }; | |
4257 | ||
4258 | /* The bucket vector size to use. Must be prime. */ | |
4259 | ||
4260 | #define CT_SIZE 101 | |
4261 | ||
4262 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4263 | ||
4264 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4265 | ||
4266 | /* The color hash table. */ | |
4267 | ||
cd44d2eb | 4268 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4269 | |
4270 | /* Number of entries in the color table. */ | |
4271 | ||
cd44d2eb | 4272 | static int ct_colors_allocated; |
ddff3151 PE |
4273 | enum |
4274 | { | |
4275 | ct_colors_allocated_max = | |
4276 | min (INT_MAX, | |
4277 | min (PTRDIFF_MAX, SIZE_MAX) / sizeof (unsigned long)) | |
4278 | }; | |
4ef0d4d0 KS |
4279 | |
4280 | /* Initialize the color table. */ | |
4281 | ||
4282 | static void | |
d3da34e0 | 4283 | init_color_table (void) |
4ef0d4d0 KS |
4284 | { |
4285 | int size = CT_SIZE * sizeof (*ct_table); | |
23f86fce | 4286 | ct_table = xzalloc (size); |
4ef0d4d0 KS |
4287 | ct_colors_allocated = 0; |
4288 | } | |
4289 | ||
4290 | ||
4291 | /* Free memory associated with the color table. */ | |
4292 | ||
4293 | static void | |
d3da34e0 | 4294 | free_color_table (void) |
4ef0d4d0 KS |
4295 | { |
4296 | int i; | |
4297 | struct ct_color *p, *next; | |
4298 | ||
4299 | for (i = 0; i < CT_SIZE; ++i) | |
4300 | for (p = ct_table[i]; p; p = next) | |
4301 | { | |
4302 | next = p->next; | |
4303 | xfree (p); | |
4304 | } | |
4305 | ||
4306 | xfree (ct_table); | |
4307 | ct_table = NULL; | |
4308 | } | |
4309 | ||
4310 | ||
4311 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4312 | entry for that color already is in the color table, return the | |
4313 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4314 | G, B, and make an entry in the color table. */ | |
4315 | ||
4316 | static unsigned long | |
d3da34e0 | 4317 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4318 | { |
4319 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4320 | int i = hash % CT_SIZE; | |
4321 | struct ct_color *p; | |
4322 | Display_Info *dpyinfo; | |
4323 | ||
4324 | /* Handle TrueColor visuals specially, which improves performance by | |
4325 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4326 | a nop, and pixel colors specify RGB values directly. See also | |
4327 | the Xlib spec, chapter 3.1. */ | |
aad3612f | 4328 | dpyinfo = FRAME_DISPLAY_INFO (f); |
4ef0d4d0 KS |
4329 | if (dpyinfo->red_bits > 0) |
4330 | { | |
4331 | unsigned long pr, pg, pb; | |
4332 | ||
4333 | /* Apply gamma-correction like normal color allocation does. */ | |
4334 | if (f->gamma) | |
4335 | { | |
4336 | XColor color; | |
4337 | color.red = r, color.green = g, color.blue = b; | |
4338 | gamma_correct (f, &color); | |
4339 | r = color.red, g = color.green, b = color.blue; | |
4340 | } | |
4341 | ||
4342 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4343 | them to the right position in the pixel color. Note that the | |
4344 | original RGB values are 16-bit values, as usual in X. */ | |
4345 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4346 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4347 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4348 | ||
4349 | /* Assemble the pixel color. */ | |
4350 | return pr | pg | pb; | |
4351 | } | |
1f026899 | 4352 | |
4ef0d4d0 KS |
4353 | for (p = ct_table[i]; p; p = p->next) |
4354 | if (p->r == r && p->g == g && p->b == b) | |
4355 | break; | |
4356 | ||
4357 | if (p == NULL) | |
4358 | { | |
4359 | ||
4360 | #ifdef HAVE_X_WINDOWS | |
4361 | XColor color; | |
4362 | Colormap cmap; | |
578098f3 | 4363 | bool rc; |
ddff3151 PE |
4364 | #else |
4365 | COLORREF color; | |
4366 | #endif | |
4ef0d4d0 | 4367 | |
ddff3151 PE |
4368 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4369 | return FRAME_FOREGROUND_PIXEL (f); | |
4370 | ||
4371 | #ifdef HAVE_X_WINDOWS | |
4ef0d4d0 KS |
4372 | color.red = r; |
4373 | color.green = g; | |
4374 | color.blue = b; | |
4375 | ||
4376 | cmap = FRAME_X_COLORMAP (f); | |
4377 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4378 | if (rc) | |
4379 | { | |
4380 | ++ct_colors_allocated; | |
23f86fce | 4381 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4382 | p->r = r; |
4383 | p->g = g; | |
4384 | p->b = b; | |
4385 | p->pixel = color.pixel; | |
4386 | p->next = ct_table[i]; | |
4387 | ct_table[i] = p; | |
4388 | } | |
4389 | else | |
4390 | return FRAME_FOREGROUND_PIXEL (f); | |
4391 | ||
4392 | #else | |
4ef0d4d0 KS |
4393 | #ifdef HAVE_NTGUI |
4394 | color = PALETTERGB (r, g, b); | |
4395 | #else | |
4396 | color = RGB_TO_ULONG (r, g, b); | |
4397 | #endif /* HAVE_NTGUI */ | |
4398 | ++ct_colors_allocated; | |
23f86fce | 4399 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4400 | p->r = r; |
4401 | p->g = g; | |
4402 | p->b = b; | |
4403 | p->pixel = color; | |
4404 | p->next = ct_table[i]; | |
4405 | ct_table[i] = p; | |
4406 | #endif /* HAVE_X_WINDOWS */ | |
4407 | ||
4408 | } | |
4409 | ||
4410 | return p->pixel; | |
4411 | } | |
4412 | ||
4413 | ||
4414 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4415 | table. If not already present, allocate it. Value is PIXEL. */ | |
4416 | ||
4417 | static unsigned long | |
d3da34e0 | 4418 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4419 | { |
4420 | int i = pixel % CT_SIZE; | |
4421 | struct ct_color *p; | |
4422 | ||
4423 | for (p = ct_table[i]; p; p = p->next) | |
4424 | if (p->pixel == pixel) | |
4425 | break; | |
4426 | ||
4427 | if (p == NULL) | |
4428 | { | |
4429 | XColor color; | |
4430 | Colormap cmap; | |
578098f3 | 4431 | bool rc; |
4ef0d4d0 | 4432 | |
ddff3151 PE |
4433 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4434 | return FRAME_FOREGROUND_PIXEL (f); | |
4435 | ||
4ef0d4d0 KS |
4436 | #ifdef HAVE_X_WINDOWS |
4437 | cmap = FRAME_X_COLORMAP (f); | |
4438 | color.pixel = pixel; | |
4439 | x_query_color (f, &color); | |
4440 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4441 | #else | |
4d7e6e51 | 4442 | block_input (); |
4ef0d4d0 KS |
4443 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); |
4444 | color.pixel = pixel; | |
4445 | XQueryColor (NULL, cmap, &color); | |
4446 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4d7e6e51 | 4447 | unblock_input (); |
4ef0d4d0 KS |
4448 | #endif /* HAVE_X_WINDOWS */ |
4449 | ||
4450 | if (rc) | |
4451 | { | |
4452 | ++ct_colors_allocated; | |
4453 | ||
23f86fce | 4454 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4455 | p->r = color.red; |
4456 | p->g = color.green; | |
4457 | p->b = color.blue; | |
4458 | p->pixel = pixel; | |
4459 | p->next = ct_table[i]; | |
4460 | ct_table[i] = p; | |
4461 | } | |
4462 | else | |
4463 | return FRAME_FOREGROUND_PIXEL (f); | |
4464 | } | |
4465 | return p->pixel; | |
4466 | } | |
4467 | ||
4468 | ||
4469 | /* Value is a vector of all pixel colors contained in the color table, | |
4470 | allocated via xmalloc. Set *N to the number of colors. */ | |
4471 | ||
4472 | static unsigned long * | |
d3da34e0 | 4473 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4474 | { |
4475 | int i, j; | |
4476 | struct ct_color *p; | |
4477 | unsigned long *colors; | |
4478 | ||
4479 | if (ct_colors_allocated == 0) | |
4480 | { | |
4481 | *n = 0; | |
4482 | colors = NULL; | |
4483 | } | |
4484 | else | |
4485 | { | |
c1ade6f7 | 4486 | colors = xmalloc_atomic (ct_colors_allocated * sizeof *colors); |
4ef0d4d0 KS |
4487 | *n = ct_colors_allocated; |
4488 | ||
4489 | for (i = j = 0; i < CT_SIZE; ++i) | |
4490 | for (p = ct_table[i]; p; p = p->next) | |
4491 | colors[j++] = p->pixel; | |
4492 | } | |
4493 | ||
4494 | return colors; | |
4495 | } | |
4496 | ||
4497 | #else /* COLOR_TABLE_SUPPORT */ | |
4498 | ||
4499 | static unsigned long | |
7c3320d8 | 4500 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4501 | { |
4502 | unsigned long pixel; | |
4503 | ||
4ef0d4d0 KS |
4504 | #ifdef HAVE_NTGUI |
4505 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4506 | #endif /* HAVE_NTGUI */ | |
4507 | ||
edfda783 AR |
4508 | #ifdef HAVE_NS |
4509 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4510 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4511 | return pixel; |
4512 | } | |
4513 | ||
4514 | static void | |
7c3320d8 | 4515 | init_color_table (void) |
4ef0d4d0 KS |
4516 | { |
4517 | } | |
4518 | #endif /* COLOR_TABLE_SUPPORT */ | |
4519 | ||
4520 | \f | |
4521 | /*********************************************************************** | |
4522 | Algorithms | |
4523 | ***********************************************************************/ | |
4524 | ||
4ef0d4d0 KS |
4525 | /* Edge detection matrices for different edge-detection |
4526 | strategies. */ | |
4527 | ||
4528 | static int emboss_matrix[9] = { | |
4529 | /* x - 1 x x + 1 */ | |
4530 | 2, -1, 0, /* y - 1 */ | |
4531 | -1, 0, 1, /* y */ | |
4532 | 0, 1, -2 /* y + 1 */ | |
4533 | }; | |
4534 | ||
4535 | static int laplace_matrix[9] = { | |
4536 | /* x - 1 x x + 1 */ | |
4537 | 1, 0, 0, /* y - 1 */ | |
4538 | 0, 0, 0, /* y */ | |
4539 | 0, 0, -1 /* y + 1 */ | |
4540 | }; | |
4541 | ||
4542 | /* Value is the intensity of the color whose red/green/blue values | |
4543 | are R, G, and B. */ | |
4544 | ||
4545 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4546 | ||
4547 | ||
4548 | /* On frame F, return an array of XColor structures describing image | |
4549 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
578098f3 | 4550 | means also fill the red/green/blue members of the XColor |
4ef0d4d0 KS |
4551 | structures. Value is a pointer to the array of XColors structures, |
4552 | allocated with xmalloc; it must be freed by the caller. */ | |
4553 | ||
4554 | static XColor * | |
578098f3 | 4555 | x_to_xcolors (struct frame *f, struct image *img, bool rgb_p) |
4ef0d4d0 KS |
4556 | { |
4557 | int x, y; | |
4558 | XColor *colors, *p; | |
4559 | XImagePtr_or_DC ximg; | |
4560 | #ifdef HAVE_NTGUI | |
4ef0d4d0 KS |
4561 | HGDIOBJ prev; |
4562 | #endif /* HAVE_NTGUI */ | |
4563 | ||
ddff3151 PE |
4564 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *colors / img->width < img->height) |
4565 | memory_full (SIZE_MAX); | |
23f86fce | 4566 | colors = xmalloc (sizeof *colors * img->width * img->height); |
4ef0d4d0 | 4567 | |
547c9269 YM |
4568 | /* Get the X image or create a memory device context for IMG. */ |
4569 | ximg = image_get_x_image_or_dc (f, img, 0, &prev); | |
4ef0d4d0 KS |
4570 | |
4571 | /* Fill the `pixel' members of the XColor array. I wished there | |
4572 | were an easy and portable way to circumvent XGetPixel. */ | |
4573 | p = colors; | |
4574 | for (y = 0; y < img->height; ++y) | |
4575 | { | |
8b7d0a16 | 4576 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
6045c4fd | 4577 | XColor *row = p; |
4ef0d4d0 | 4578 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4579 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4580 | if (rgb_p) |
4581 | x_query_colors (f, row, img->width); | |
4582 | ||
4583 | #else | |
4584 | ||
4585 | for (x = 0; x < img->width; ++x, ++p) | |
4586 | { | |
4587 | /* W32_TODO: palette support needed here? */ | |
4588 | p->pixel = GET_PIXEL (ximg, x, y); | |
4589 | if (rgb_p) | |
4590 | { | |
4ef0d4d0 KS |
4591 | p->red = RED16_FROM_ULONG (p->pixel); |
4592 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4593 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4594 | } |
4595 | } | |
4596 | #endif /* HAVE_X_WINDOWS */ | |
4597 | } | |
4598 | ||
547c9269 | 4599 | image_unget_x_image_or_dc (img, 0, ximg, prev); |
4ef0d4d0 KS |
4600 | |
4601 | return colors; | |
4602 | } | |
4603 | ||
4604 | #ifdef HAVE_NTGUI | |
4605 | ||
4606 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4607 | created with CreateDIBSection, with the pointer to the bit values | |
4608 | stored in ximg->data. */ | |
4609 | ||
3046a84b | 4610 | static void |
7c3320d8 | 4611 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4612 | { |
4613 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4614 | unsigned char * pixel; |
4615 | ||
4616 | /* True color images. */ | |
4617 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4618 | { | |
4619 | int rowbytes = width * 3; | |
4620 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4621 | if (rowbytes % 4) | |
4622 | rowbytes += 4 - (rowbytes % 4); | |
4623 | ||
4624 | pixel = ximg->data + y * rowbytes + x * 3; | |
4625 | /* Windows bitmaps are in BGR order. */ | |
4626 | *pixel = GetBValue (color); | |
4627 | *(pixel + 1) = GetGValue (color); | |
4628 | *(pixel + 2) = GetRValue (color); | |
4629 | } | |
4630 | /* Monochrome images. */ | |
4631 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4632 | { | |
4633 | int rowbytes = width / 8; | |
4634 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4635 | if (rowbytes % 4) | |
4636 | rowbytes += 4 - (rowbytes % 4); | |
4637 | pixel = ximg->data + y * rowbytes + x / 8; | |
4638 | /* Filter out palette info. */ | |
4639 | if (color & 0x00ffffff) | |
4640 | *pixel = *pixel | (1 << x % 8); | |
4641 | else | |
4642 | *pixel = *pixel & ~(1 << x % 8); | |
4643 | } | |
4644 | else | |
4645 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4646 | } | |
4647 | ||
4648 | #endif /* HAVE_NTGUI */ | |
4649 | ||
4650 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4651 | RGB members are set. F is the frame on which this all happens. | |
4652 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4653 | ||
4654 | static void | |
d3da34e0 | 4655 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4656 | { |
4657 | int x, y; | |
edfda783 | 4658 | XImagePtr oimg = NULL; |
4ef0d4d0 KS |
4659 | XColor *p; |
4660 | ||
4661 | init_color_table (); | |
4662 | ||
547c9269 YM |
4663 | x_clear_image_1 (f, img, CLEAR_IMAGE_PIXMAP | CLEAR_IMAGE_COLORS); |
4664 | image_create_x_image_and_pixmap (f, img, img->width, img->height, 0, | |
4665 | &oimg, 0); | |
4ef0d4d0 KS |
4666 | p = colors; |
4667 | for (y = 0; y < img->height; ++y) | |
4668 | for (x = 0; x < img->width; ++x, ++p) | |
4669 | { | |
4670 | unsigned long pixel; | |
4671 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4672 | XPutPixel (oimg, x, y, pixel); | |
4673 | } | |
4674 | ||
4675 | xfree (colors); | |
4ef0d4d0 | 4676 | |
547c9269 | 4677 | image_put_x_image (f, img, oimg, 0); |
4ef0d4d0 KS |
4678 | #ifdef COLOR_TABLE_SUPPORT |
4679 | img->colors = colors_in_color_table (&img->ncolors); | |
4680 | free_color_table (); | |
4681 | #endif /* COLOR_TABLE_SUPPORT */ | |
4682 | } | |
4683 | ||
4684 | ||
4685 | /* On frame F, perform edge-detection on image IMG. | |
4686 | ||
4687 | MATRIX is a nine-element array specifying the transformation | |
4688 | matrix. See emboss_matrix for an example. | |
4689 | ||
4690 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4691 | outgoing image. */ | |
4692 | ||
4693 | static void | |
d3da34e0 | 4694 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4695 | { |
4696 | XColor *colors = x_to_xcolors (f, img, 1); | |
4697 | XColor *new, *p; | |
4698 | int x, y, i, sum; | |
4699 | ||
4700 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4701 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4702 | |
4703 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4704 | ||
ddff3151 PE |
4705 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *new / img->width < img->height) |
4706 | memory_full (SIZE_MAX); | |
23f86fce | 4707 | new = xmalloc (sizeof *new * img->width * img->height); |
4ef0d4d0 KS |
4708 | |
4709 | for (y = 0; y < img->height; ++y) | |
4710 | { | |
4711 | p = COLOR (new, 0, y); | |
4712 | p->red = p->green = p->blue = 0xffff/2; | |
4713 | p = COLOR (new, img->width - 1, y); | |
4714 | p->red = p->green = p->blue = 0xffff/2; | |
4715 | } | |
4716 | ||
4717 | for (x = 1; x < img->width - 1; ++x) | |
4718 | { | |
4719 | p = COLOR (new, x, 0); | |
4720 | p->red = p->green = p->blue = 0xffff/2; | |
4721 | p = COLOR (new, x, img->height - 1); | |
4722 | p->red = p->green = p->blue = 0xffff/2; | |
4723 | } | |
4724 | ||
4725 | for (y = 1; y < img->height - 1; ++y) | |
4726 | { | |
4727 | p = COLOR (new, 1, y); | |
4728 | ||
4729 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4730 | { | |
6ae141d6 | 4731 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4732 | |
4733 | r = g = b = i = 0; | |
6ae141d6 PE |
4734 | for (yy = y - 1; yy < y + 2; ++yy) |
4735 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4736 | if (matrix[i]) |
4737 | { | |
6ae141d6 | 4738 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4739 | r += matrix[i] * t->red; |
4740 | g += matrix[i] * t->green; | |
4741 | b += matrix[i] * t->blue; | |
4742 | } | |
4743 | ||
4744 | r = (r / sum + color_adjust) & 0xffff; | |
4745 | g = (g / sum + color_adjust) & 0xffff; | |
4746 | b = (b / sum + color_adjust) & 0xffff; | |
4747 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4748 | } | |
4749 | } | |
4750 | ||
4751 | xfree (colors); | |
4752 | x_from_xcolors (f, img, new); | |
4753 | ||
4754 | #undef COLOR | |
4755 | } | |
4756 | ||
4757 | ||
4758 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4759 | on frame F. */ | |
4760 | ||
4761 | static void | |
d3da34e0 | 4762 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4763 | { |
4764 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4765 | } | |
4766 | ||
4767 | ||
4768 | /* Transform image IMG which is used on frame F with a Laplace | |
4769 | edge-detection algorithm. The result is an image that can be used | |
4770 | to draw disabled buttons, for example. */ | |
4771 | ||
4772 | static void | |
d3da34e0 | 4773 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4774 | { |
4775 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4776 | } | |
4777 | ||
4778 | ||
4779 | /* Perform edge-detection on image IMG on frame F, with specified | |
4780 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4781 | ||
4782 | MATRIX must be either | |
4783 | ||
4784 | - a list of at least 9 numbers in row-major form | |
4785 | - a vector of at least 9 numbers | |
4786 | ||
4787 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4788 | number. */ | |
4789 | ||
4790 | static void | |
d3da34e0 JB |
4791 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4792 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4793 | { |
4794 | int i = 0; | |
4795 | int trans[9]; | |
4796 | ||
4797 | if (CONSP (matrix)) | |
4798 | { | |
4799 | for (i = 0; | |
4800 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4801 | ++i, matrix = XCDR (matrix)) | |
4802 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4803 | } | |
4804 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4805 | { | |
4806 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4807 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4808 | } | |
4809 | ||
4810 | if (NILP (color_adjust)) | |
4811 | color_adjust = make_number (0xffff / 2); | |
4812 | ||
4813 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4814 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4815 | } |
4816 | ||
4817 | ||
4818 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4819 | ||
4820 | static void | |
d3da34e0 | 4821 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 | 4822 | { |
aad3612f | 4823 | Display_Info *dpyinfo = FRAME_DISPLAY_INFO (f); |
4ef0d4d0 KS |
4824 | #ifdef HAVE_NTGUI |
4825 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4826 | #else | |
4827 | int n_planes = dpyinfo->n_planes; | |
4828 | #endif /* HAVE_NTGUI */ | |
4829 | ||
4830 | if (n_planes >= 2) | |
4831 | { | |
4832 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4833 | drawing such images with a stipple can look very odd, so | |
4834 | we're using this method instead. */ | |
4835 | XColor *colors = x_to_xcolors (f, img, 1); | |
4836 | XColor *p, *end; | |
4837 | const int h = 15000; | |
4838 | const int l = 30000; | |
4839 | ||
4840 | for (p = colors, end = colors + img->width * img->height; | |
4841 | p < end; | |
4842 | ++p) | |
4843 | { | |
4844 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4845 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4846 | p->red = p->green = p->blue = i2; | |
4847 | } | |
4848 | ||
4849 | x_from_xcolors (f, img, colors); | |
4850 | } | |
4851 | ||
4852 | /* Draw a cross over the disabled image, if we must or if we | |
4853 | should. */ | |
4854 | if (n_planes < 2 || cross_disabled_images) | |
4855 | { | |
4856 | #ifndef HAVE_NTGUI | |
5afa3a81 | 4857 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4858 | |
4ef0d4d0 | 4859 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4860 | |
6045c4fd | 4861 | Display *dpy = FRAME_X_DISPLAY (f); |
547c9269 YM |
4862 | GC gc; |
4863 | ||
4864 | image_sync_to_pixmaps (f, img); | |
4865 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); | |
4ef0d4d0 KS |
4866 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4867 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4868 | img->width - 1, img->height - 1); | |
4869 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4870 | img->width - 1, 0); | |
4871 | XFreeGC (dpy, gc); | |
4872 | ||
4873 | if (img->mask) | |
4874 | { | |
ae8279db | 4875 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4876 | XSetForeground (dpy, gc, MaskForeground (f)); |
4877 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4878 | img->width - 1, img->height - 1); | |
4879 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4880 | img->width - 1, 0); | |
4881 | XFreeGC (dpy, gc); | |
4882 | } | |
edfda783 | 4883 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4884 | #else |
4885 | HDC hdc, bmpdc; | |
4886 | HGDIOBJ prev; | |
4887 | ||
4888 | hdc = get_frame_dc (f); | |
4889 | bmpdc = CreateCompatibleDC (hdc); | |
4890 | release_frame_dc (f, hdc); | |
4891 | ||
4892 | prev = SelectObject (bmpdc, img->pixmap); | |
4893 | ||
4894 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4895 | MoveToEx (bmpdc, 0, 0, NULL); | |
4896 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4897 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4898 | LineTo (bmpdc, img->width - 1, 0); | |
4899 | ||
4900 | if (img->mask) | |
4901 | { | |
4902 | SelectObject (bmpdc, img->mask); | |
4903 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4904 | MoveToEx (bmpdc, 0, 0, NULL); | |
4905 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4906 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4907 | LineTo (bmpdc, img->width - 1, 0); | |
4908 | } | |
4909 | SelectObject (bmpdc, prev); | |
4910 | DeleteDC (bmpdc); | |
4911 | #endif /* HAVE_NTGUI */ | |
4912 | } | |
4913 | } | |
4914 | ||
4915 | ||
4916 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4917 | name of an image file, for error messages. HOW determines how to | |
4918 | determine the background color of IMG. If it is a list '(R G B)', | |
4919 | with R, G, and B being integers >= 0, take that as the color of the | |
4920 | background. Otherwise, determine the background color of IMG | |
578098f3 | 4921 | heuristically. */ |
4ef0d4d0 | 4922 | |
578098f3 | 4923 | static void |
d3da34e0 | 4924 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4925 | { |
4926 | XImagePtr_or_DC ximg; | |
4927 | #ifndef HAVE_NTGUI | |
4928 | XImagePtr mask_img; | |
4929 | #else | |
4ef0d4d0 KS |
4930 | HGDIOBJ prev; |
4931 | char *mask_img; | |
4932 | int row_width; | |
4933 | #endif /* HAVE_NTGUI */ | |
578098f3 | 4934 | int x, y; |
f462f075 | 4935 | bool use_img_background; |
4ef0d4d0 KS |
4936 | unsigned long bg = 0; |
4937 | ||
4938 | if (img->mask) | |
547c9269 | 4939 | x_clear_image_1 (f, img, CLEAR_IMAGE_MASK); |
4ef0d4d0 KS |
4940 | |
4941 | #ifndef HAVE_NTGUI | |
edfda783 | 4942 | #ifndef HAVE_NS |
4ef0d4d0 | 4943 | /* Create an image and pixmap serving as mask. */ |
f462f075 PE |
4944 | if (! image_create_x_image_and_pixmap (f, img, img->width, img->height, 1, |
4945 | &mask_img, 1)) | |
578098f3 | 4946 | return; |
edfda783 | 4947 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4948 | #else |
4949 | /* Create the bit array serving as mask. */ | |
4950 | row_width = (img->width + 7) / 8; | |
23f86fce | 4951 | mask_img = xzalloc (row_width * img->height); |
4ef0d4d0 KS |
4952 | #endif /* HAVE_NTGUI */ |
4953 | ||
547c9269 YM |
4954 | /* Get the X image or create a memory device context for IMG. */ |
4955 | ximg = image_get_x_image_or_dc (f, img, 0, &prev); | |
4956 | ||
4ef0d4d0 KS |
4957 | /* Determine the background color of ximg. If HOW is `(R G B)' |
4958 | take that as color. Otherwise, use the image's background color. */ | |
4959 | use_img_background = 1; | |
4960 | ||
4961 | if (CONSP (how)) | |
4962 | { | |
4963 | int rgb[3], i; | |
4964 | ||
4965 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4966 | { | |
4967 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4968 | how = XCDR (how); | |
4969 | } | |
4970 | ||
4971 | if (i == 3 && NILP (how)) | |
4972 | { | |
4973 | char color_name[30]; | |
4974 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4975 | bg = ( | |
4976 | #ifdef HAVE_NTGUI | |
4977 | 0x00ffffff & /* Filter out palette info. */ | |
4978 | #endif /* HAVE_NTGUI */ | |
4979 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4980 | use_img_background = 0; | |
4981 | } | |
4982 | } | |
4983 | ||
4984 | if (use_img_background) | |
6ac3c7bb | 4985 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4986 | |
4987 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4988 | from the background color bg. */ | |
4989 | #ifndef HAVE_NTGUI | |
4990 | for (y = 0; y < img->height; ++y) | |
4991 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4992 | #ifndef HAVE_NS |
4ef0d4d0 | 4993 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4994 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4995 | #else |
4996 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4997 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4998 | #endif /* HAVE_NS */ |
4999 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
5000 | /* Fill in the background_transparent field while we have the mask handy. */ |
5001 | image_background_transparent (img, f, mask_img); | |
5002 | ||
547c9269 YM |
5003 | /* Put mask_img into the image. */ |
5004 | image_put_x_image (f, img, mask_img, 1); | |
edfda783 | 5005 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
5006 | #else |
5007 | for (y = 0; y < img->height; ++y) | |
5008 | for (x = 0; x < img->width; ++x) | |
5009 | { | |
5010 | COLORREF p = GetPixel (ximg, x, y); | |
5011 | if (p != bg) | |
5012 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
5013 | } | |
5014 | ||
5015 | /* Create the mask image. */ | |
5016 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
5017 | mask_img); | |
5018 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5019 | SelectObject (ximg, img->mask); | |
5020 | image_background_transparent (img, f, ximg); | |
5021 | ||
5022 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
5023 | xfree (mask_img); | |
5024 | #endif /* HAVE_NTGUI */ | |
5025 | ||
547c9269 | 5026 | image_unget_x_image_or_dc (img, 0, ximg, prev); |
4ef0d4d0 KS |
5027 | } |
5028 | ||
5029 | \f | |
5030 | /*********************************************************************** | |
5031 | PBM (mono, gray, color) | |
5032 | ***********************************************************************/ | |
5033 | ||
578098f3 PE |
5034 | static bool pbm_image_p (Lisp_Object object); |
5035 | static bool pbm_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5036 | |
5037 | /* The symbol `pbm' identifying images of this type. */ | |
5038 | ||
955cbe7b | 5039 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
5040 | |
5041 | /* Indices of image specification fields in gs_format, below. */ | |
5042 | ||
5043 | enum pbm_keyword_index | |
5044 | { | |
5045 | PBM_TYPE, | |
5046 | PBM_FILE, | |
5047 | PBM_DATA, | |
5048 | PBM_ASCENT, | |
5049 | PBM_MARGIN, | |
5050 | PBM_RELIEF, | |
5051 | PBM_ALGORITHM, | |
5052 | PBM_HEURISTIC_MASK, | |
5053 | PBM_MASK, | |
5054 | PBM_FOREGROUND, | |
5055 | PBM_BACKGROUND, | |
5056 | PBM_LAST | |
5057 | }; | |
5058 | ||
5059 | /* Vector of image_keyword structures describing the format | |
5060 | of valid user-defined image specifications. */ | |
5061 | ||
91433552 | 5062 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
5063 | { |
5064 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5065 | {":file", IMAGE_STRING_VALUE, 0}, | |
5066 | {":data", IMAGE_STRING_VALUE, 0}, | |
5067 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5068 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5069 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5070 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5071 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5072 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5073 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
5074 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5075 | }; | |
5076 | ||
5077 | /* Structure describing the image type `pbm'. */ | |
5078 | ||
5079 | static struct image_type pbm_type = | |
5080 | { | |
5081 | &Qpbm, | |
5082 | pbm_image_p, | |
5083 | pbm_load, | |
5084 | x_clear_image, | |
bb4d86b4 | 5085 | NULL, |
4ef0d4d0 KS |
5086 | NULL |
5087 | }; | |
5088 | ||
5089 | ||
578098f3 | 5090 | /* Return true if OBJECT is a valid PBM image specification. */ |
4ef0d4d0 | 5091 | |
578098f3 | 5092 | static bool |
d3da34e0 | 5093 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5094 | { |
5095 | struct image_keyword fmt[PBM_LAST]; | |
5096 | ||
72af86bd | 5097 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5098 | |
5099 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
5100 | return 0; | |
5101 | ||
5102 | /* Must specify either :data or :file. */ | |
5103 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
5104 | } | |
5105 | ||
5106 | ||
0e7690de CB |
5107 | /* Get next char skipping comments in Netpbm header. Returns -1 at |
5108 | end of input. */ | |
5109 | ||
5110 | static int | |
5111 | pbm_next_char (unsigned char **s, unsigned char *end) | |
5112 | { | |
5113 | int c = -1; | |
5114 | ||
5115 | while (*s < end && (c = *(*s)++, c == '#')) | |
5116 | { | |
5117 | /* Skip to the next line break. */ | |
5118 | while (*s < end && (c = *(*s)++, c != '\n' && c != '\r')) | |
5119 | ; | |
5120 | ||
5121 | c = -1; | |
5122 | } | |
5123 | ||
5124 | return c; | |
5125 | } | |
5126 | ||
5127 | ||
4ef0d4d0 KS |
5128 | /* Scan a decimal number from *S and return it. Advance *S while |
5129 | reading the number. END is the end of the string. Value is -1 at | |
5130 | end of input. */ | |
5131 | ||
5132 | static int | |
d3da34e0 | 5133 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
5134 | { |
5135 | int c = 0, val = -1; | |
5136 | ||
0e7690de CB |
5137 | /* Skip white-space. */ |
5138 | while ((c = pbm_next_char (s, end)) != -1 && c_isspace (c)) | |
5139 | ; | |
4ef0d4d0 | 5140 | |
0e7690de CB |
5141 | if (c_isdigit (c)) |
5142 | { | |
5143 | /* Read decimal number. */ | |
5144 | val = c - '0'; | |
5145 | while ((c = pbm_next_char (s, end)) != -1 && c_isdigit (c)) | |
5146 | val = 10 * val + c - '0'; | |
4ef0d4d0 KS |
5147 | } |
5148 | ||
5149 | return val; | |
5150 | } | |
5151 | ||
5152 | ||
4ef0d4d0 KS |
5153 | /* Load PBM image IMG for use on frame F. */ |
5154 | ||
578098f3 | 5155 | static bool |
d3da34e0 | 5156 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 5157 | { |
578098f3 PE |
5158 | bool raw_p; |
5159 | int x, y; | |
4ef0d4d0 KS |
5160 | int width, height, max_color_idx = 0; |
5161 | XImagePtr ximg; | |
5162 | Lisp_Object file, specified_file; | |
5163 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5164 | unsigned char *contents = NULL; |
5165 | unsigned char *end, *p; | |
dd52fcea | 5166 | ptrdiff_t size; |
4ef0d4d0 KS |
5167 | |
5168 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5169 | |
5170 | if (STRINGP (specified_file)) | |
5171 | { | |
5172 | file = x_find_image_file (specified_file); | |
5173 | if (!STRINGP (file)) | |
5174 | { | |
5175 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5176 | return 0; |
5177 | } | |
5178 | ||
42a5b22f | 5179 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5180 | if (contents == NULL) |
5181 | { | |
5182 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5183 | return 0; |
5184 | } | |
5185 | ||
5186 | p = contents; | |
5187 | end = contents + size; | |
5188 | } | |
5189 | else | |
5190 | { | |
5191 | Lisp_Object data; | |
5192 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5193 | if (!STRINGP (data)) |
5194 | { | |
5195 | image_error ("Invalid image data `%s'", data, Qnil); | |
5196 | return 0; | |
5197 | } | |
4ef0d4d0 KS |
5198 | p = SDATA (data); |
5199 | end = p + SBYTES (data); | |
5200 | } | |
5201 | ||
5202 | /* Check magic number. */ | |
5203 | if (end - p < 2 || *p++ != 'P') | |
5204 | { | |
5205 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5206 | error: | |
5207 | xfree (contents); | |
a9a61c77 | 5208 | img->pixmap = NO_PIXMAP; |
4ef0d4d0 KS |
5209 | return 0; |
5210 | } | |
5211 | ||
5212 | switch (*p++) | |
5213 | { | |
5214 | case '1': | |
5215 | raw_p = 0, type = PBM_MONO; | |
5216 | break; | |
5217 | ||
5218 | case '2': | |
5219 | raw_p = 0, type = PBM_GRAY; | |
5220 | break; | |
5221 | ||
5222 | case '3': | |
5223 | raw_p = 0, type = PBM_COLOR; | |
5224 | break; | |
5225 | ||
5226 | case '4': | |
5227 | raw_p = 1, type = PBM_MONO; | |
5228 | break; | |
5229 | ||
5230 | case '5': | |
5231 | raw_p = 1, type = PBM_GRAY; | |
5232 | break; | |
5233 | ||
5234 | case '6': | |
5235 | raw_p = 1, type = PBM_COLOR; | |
5236 | break; | |
5237 | ||
5238 | default: | |
5239 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5240 | goto error; | |
5241 | } | |
5242 | ||
5243 | /* Read width, height, maximum color-component. Characters | |
5244 | starting with `#' up to the end of a line are ignored. */ | |
5245 | width = pbm_scan_number (&p, end); | |
5246 | height = pbm_scan_number (&p, end); | |
5247 | ||
5248 | if (type != PBM_MONO) | |
5249 | { | |
5250 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5251 | if (max_color_idx > 65535 || max_color_idx < 0) |
5252 | { | |
5253 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5254 | goto error; | |
5255 | } | |
4ef0d4d0 KS |
5256 | } |
5257 | ||
b9c89e11 JR |
5258 | if (!check_image_size (f, width, height)) |
5259 | { | |
10ea2b82 | 5260 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5261 | goto error; |
5262 | } | |
4ef0d4d0 | 5263 | |
547c9269 | 5264 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0)) |
4ef0d4d0 KS |
5265 | goto error; |
5266 | ||
5267 | /* Initialize the color hash table. */ | |
5268 | init_color_table (); | |
5269 | ||
5270 | if (type == PBM_MONO) | |
5271 | { | |
5272 | int c = 0, g; | |
5273 | struct image_keyword fmt[PBM_LAST]; | |
5274 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5275 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5276 | ||
5277 | /* Parse the image specification. */ | |
72af86bd | 5278 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5279 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5280 | ||
5281 | /* Get foreground and background colors, maybe allocate colors. */ | |
5282 | if (fmt[PBM_FOREGROUND].count | |
5283 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5284 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5285 | if (fmt[PBM_BACKGROUND].count | |
5286 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5287 | { | |
5288 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5289 | img->background = bg; | |
5290 | img->background_valid = 1; | |
5291 | } | |
5292 | ||
5293 | for (y = 0; y < height; ++y) | |
5294 | for (x = 0; x < width; ++x) | |
5295 | { | |
5296 | if (raw_p) | |
5297 | { | |
5298 | if ((x & 7) == 0) | |
c295e710 CY |
5299 | { |
5300 | if (p >= end) | |
5301 | { | |
5302 | x_destroy_x_image (ximg); | |
5303 | x_clear_image (f, img); | |
5304 | image_error ("Invalid image size in image `%s'", | |
5305 | img->spec, Qnil); | |
5306 | goto error; | |
5307 | } | |
5308 | c = *p++; | |
5309 | } | |
4ef0d4d0 KS |
5310 | g = c & 0x80; |
5311 | c <<= 1; | |
5312 | } | |
5313 | else | |
5314 | g = pbm_scan_number (&p, end); | |
5315 | ||
5316 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5317 | } | |
5318 | } | |
5319 | else | |
5320 | { | |
b9c89e11 JR |
5321 | int expected_size = height * width; |
5322 | if (max_color_idx > 255) | |
5323 | expected_size *= 2; | |
5324 | if (type == PBM_COLOR) | |
5325 | expected_size *= 3; | |
5326 | ||
5327 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5328 | { |
5329 | x_destroy_x_image (ximg); | |
fb0b0862 | 5330 | x_clear_image (f, img); |
39e653ea CY |
5331 | image_error ("Invalid image size in image `%s'", |
5332 | img->spec, Qnil); | |
5333 | goto error; | |
5334 | } | |
5335 | ||
4ef0d4d0 KS |
5336 | for (y = 0; y < height; ++y) |
5337 | for (x = 0; x < width; ++x) | |
5338 | { | |
5339 | int r, g, b; | |
5340 | ||
b9c89e11 JR |
5341 | if (type == PBM_GRAY && raw_p) |
5342 | { | |
5343 | r = g = b = *p++; | |
5344 | if (max_color_idx > 255) | |
5345 | r = g = b = r * 256 + *p++; | |
5346 | } | |
5347 | else if (type == PBM_GRAY) | |
5348 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5349 | else if (raw_p) |
5350 | { | |
5351 | r = *p++; | |
b9c89e11 JR |
5352 | if (max_color_idx > 255) |
5353 | r = r * 256 + *p++; | |
4ef0d4d0 | 5354 | g = *p++; |
b9c89e11 JR |
5355 | if (max_color_idx > 255) |
5356 | g = g * 256 + *p++; | |
4ef0d4d0 | 5357 | b = *p++; |
b9c89e11 JR |
5358 | if (max_color_idx > 255) |
5359 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5360 | } |
5361 | else | |
5362 | { | |
5363 | r = pbm_scan_number (&p, end); | |
5364 | g = pbm_scan_number (&p, end); | |
5365 | b = pbm_scan_number (&p, end); | |
5366 | } | |
5367 | ||
5368 | if (r < 0 || g < 0 || b < 0) | |
5369 | { | |
5370 | x_destroy_x_image (ximg); | |
5371 | image_error ("Invalid pixel value in image `%s'", | |
5372 | img->spec, Qnil); | |
5373 | goto error; | |
5374 | } | |
5375 | ||
5376 | /* RGB values are now in the range 0..max_color_idx. | |
5377 | Scale this to the range 0..0xffff supported by X. */ | |
5378 | r = (double) r * 65535 / max_color_idx; | |
5379 | g = (double) g * 65535 / max_color_idx; | |
5380 | b = (double) b * 65535 / max_color_idx; | |
5381 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5382 | } | |
5383 | } | |
5384 | ||
5385 | #ifdef COLOR_TABLE_SUPPORT | |
5386 | /* Store in IMG->colors the colors allocated for the image, and | |
5387 | free the color table. */ | |
5388 | img->colors = colors_in_color_table (&img->ncolors); | |
5389 | free_color_table (); | |
5390 | #endif /* COLOR_TABLE_SUPPORT */ | |
5391 | ||
5392 | img->width = width; | |
5393 | img->height = height; | |
5394 | ||
5395 | /* Maybe fill in the background field while we have ximg handy. */ | |
5396 | ||
5397 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5398 | /* Casting avoids a GCC warning. */ |
5399 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 | 5400 | |
547c9269 YM |
5401 | /* Put ximg into the image. */ |
5402 | image_put_x_image (f, img, ximg, 0); | |
4ef0d4d0 KS |
5403 | |
5404 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5405 | img->width = width; |
4ef0d4d0 KS |
5406 | img->height = height; */ |
5407 | ||
4ef0d4d0 KS |
5408 | xfree (contents); |
5409 | return 1; | |
5410 | } | |
5411 | ||
5412 | \f | |
5413 | /*********************************************************************** | |
5414 | PNG | |
5415 | ***********************************************************************/ | |
5416 | ||
9e2a2647 | 5417 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5418 | |
5419 | /* Function prototypes. */ | |
5420 | ||
578098f3 PE |
5421 | static bool png_image_p (Lisp_Object object); |
5422 | static bool png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5423 | |
5424 | /* The symbol `png' identifying images of this type. */ | |
5425 | ||
955cbe7b | 5426 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5427 | |
5428 | /* Indices of image specification fields in png_format, below. */ | |
5429 | ||
5430 | enum png_keyword_index | |
5431 | { | |
5432 | PNG_TYPE, | |
5433 | PNG_DATA, | |
5434 | PNG_FILE, | |
5435 | PNG_ASCENT, | |
5436 | PNG_MARGIN, | |
5437 | PNG_RELIEF, | |
5438 | PNG_ALGORITHM, | |
5439 | PNG_HEURISTIC_MASK, | |
5440 | PNG_MASK, | |
5441 | PNG_BACKGROUND, | |
5442 | PNG_LAST | |
5443 | }; | |
5444 | ||
5445 | /* Vector of image_keyword structures describing the format | |
5446 | of valid user-defined image specifications. */ | |
5447 | ||
91433552 | 5448 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5449 | { |
5450 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5451 | {":data", IMAGE_STRING_VALUE, 0}, | |
5452 | {":file", IMAGE_STRING_VALUE, 0}, | |
5453 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5454 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5455 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5456 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5457 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5458 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5459 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5460 | }; | |
5461 | ||
a9e7a9d5 | 5462 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 5463 | static bool init_png_functions (void); |
bb4d86b4 CY |
5464 | #else |
5465 | #define init_png_functions NULL | |
5466 | #endif | |
5467 | ||
4ef0d4d0 KS |
5468 | /* Structure describing the image type `png'. */ |
5469 | ||
5470 | static struct image_type png_type = | |
5471 | { | |
5472 | &Qpng, | |
5473 | png_image_p, | |
5474 | png_load, | |
5475 | x_clear_image, | |
bb4d86b4 | 5476 | init_png_functions, |
4ef0d4d0 KS |
5477 | NULL |
5478 | }; | |
5479 | ||
578098f3 | 5480 | /* Return true if OBJECT is a valid PNG image specification. */ |
4ef0d4d0 | 5481 | |
578098f3 | 5482 | static bool |
d3da34e0 | 5483 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5484 | { |
5485 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5486 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5487 | |
5488 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5489 | return 0; | |
5490 | ||
5491 | /* Must specify either the :data or :file keyword. */ | |
5492 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5493 | } | |
5494 | ||
9e2a2647 | 5495 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5496 | |
5497 | ||
f62bc934 PE |
5498 | #if defined HAVE_PNG && !defined HAVE_NS |
5499 | ||
0fda9b75 | 5500 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
5501 | /* PNG library details. */ |
5502 | ||
14beddf4 CY |
5503 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5504 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5505 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5506 | png_error_ptr, png_error_ptr)); | |
5507 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5508 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5509 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5510 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5511 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5512 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5513 | png_uint_32 *, png_uint_32 *, |
5514 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5515 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5516 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5517 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5518 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5519 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5520 | int, int, double)); |
14beddf4 CY |
5521 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5522 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5523 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5524 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5525 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5526 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5527 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5528 | |
7f9c5df9 | 5529 | #if (PNG_LIBPNG_VER >= 10500) |
7667eeb9 | 5530 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)) PNG_NORETURN; |
14beddf4 | 5531 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); |
7f9c5df9 | 5532 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 | 5533 | |
578098f3 | 5534 | static bool |
d07ff9db | 5535 | init_png_functions (void) |
4ef0d4d0 KS |
5536 | { |
5537 | HMODULE library; | |
5538 | ||
d07ff9db | 5539 | if (!(library = w32_delayed_load (Qpng))) |
4ef0d4d0 KS |
5540 | return 0; |
5541 | ||
5542 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5543 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5544 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5545 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5546 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5547 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5548 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5549 | LOAD_IMGLIB_FN (library, png_read_info); | |
5550 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5551 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5552 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5553 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5554 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5555 | LOAD_IMGLIB_FN (library, png_set_background); | |
5556 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5557 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5558 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5559 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5560 | LOAD_IMGLIB_FN (library, png_read_image); | |
5561 | LOAD_IMGLIB_FN (library, png_read_end); | |
5562 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5563 | |
5564 | #if (PNG_LIBPNG_VER >= 10500) | |
5565 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5566 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5567 | #endif /* libpng version >= 1.5 */ | |
5568 | ||
4ef0d4d0 KS |
5569 | return 1; |
5570 | } | |
5571 | #else | |
5572 | ||
5573 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5574 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5575 | #define fn_png_create_read_struct png_create_read_struct |
5576 | #define fn_png_create_info_struct png_create_info_struct | |
5577 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5578 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5579 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5580 | #define fn_png_read_info png_read_info | |
5581 | #define fn_png_get_IHDR png_get_IHDR | |
5582 | #define fn_png_get_valid png_get_valid | |
5583 | #define fn_png_set_strip_16 png_set_strip_16 | |
5584 | #define fn_png_set_expand png_set_expand | |
5585 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5586 | #define fn_png_set_background png_set_background | |
5587 | #define fn_png_get_bKGD png_get_bKGD | |
5588 | #define fn_png_read_update_info png_read_update_info | |
5589 | #define fn_png_get_channels png_get_channels | |
5590 | #define fn_png_get_rowbytes png_get_rowbytes | |
5591 | #define fn_png_read_image png_read_image | |
5592 | #define fn_png_read_end png_read_end | |
5593 | #define fn_png_error png_error | |
5594 | ||
7f9c5df9 CY |
5595 | #if (PNG_LIBPNG_VER >= 10500) |
5596 | #define fn_png_longjmp png_longjmp | |
5597 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5598 | #endif /* libpng version >= 1.5 */ | |
5599 | ||
0fda9b75 | 5600 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 5601 | |
d1eaf34b PE |
5602 | /* Fast implementations of setjmp and longjmp. Although setjmp and longjmp |
5603 | will do, POSIX _setjmp and _longjmp (if available) are often faster. | |
5604 | Do not use sys_setjmp, as PNG supports only jmp_buf. | |
5605 | It's OK if the longjmp substitute restores the signal mask. */ | |
5606 | #ifdef HAVE__SETJMP | |
5607 | # define FAST_SETJMP(j) _setjmp (j) | |
5608 | # define FAST_LONGJMP _longjmp | |
5609 | #else | |
5610 | # define FAST_SETJMP(j) setjmp (j) | |
5611 | # define FAST_LONGJMP longjmp | |
0328b6de | 5612 | #endif |
7f9c5df9 | 5613 | |
d1eaf34b PE |
5614 | #if PNG_LIBPNG_VER < 10500 |
5615 | #define PNG_LONGJMP(ptr) FAST_LONGJMP ((ptr)->jmpbuf, 1) | |
7f9c5df9 CY |
5616 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5617 | #else | |
df61c790 | 5618 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
d1eaf34b | 5619 | #define PNG_LONGJMP(ptr) fn_png_longjmp (ptr, 1) |
7f9c5df9 | 5620 | #define PNG_JMPBUF(ptr) \ |
d1eaf34b | 5621 | (*fn_png_set_longjmp_fn (ptr, FAST_LONGJMP, sizeof (jmp_buf))) |
7f9c5df9 CY |
5622 | #endif |
5623 | ||
4ef0d4d0 KS |
5624 | /* Error and warning handlers installed when the PNG library |
5625 | is initialized. */ | |
5626 | ||
845ca893 | 5627 | static _Noreturn void |
d3da34e0 | 5628 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5629 | { |
a54e2c05 | 5630 | eassert (png_ptr != NULL); |
5be1c984 EZ |
5631 | /* Avoid compiler warning about deprecated direct access to |
5632 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5633 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5634 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5635 | } |
5636 | ||
5637 | ||
5638 | static void | |
d3da34e0 | 5639 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5640 | { |
a54e2c05 | 5641 | eassert (png_ptr != NULL); |
4ef0d4d0 KS |
5642 | image_error ("PNG warning: %s", build_string (msg), Qnil); |
5643 | } | |
5644 | ||
5645 | /* Memory source for PNG decoding. */ | |
5646 | ||
5647 | struct png_memory_storage | |
5648 | { | |
5649 | unsigned char *bytes; /* The data */ | |
3f791afe PE |
5650 | ptrdiff_t len; /* How big is it? */ |
5651 | ptrdiff_t index; /* Where are we? */ | |
4ef0d4d0 KS |
5652 | }; |
5653 | ||
5654 | ||
5655 | /* Function set as reader function when reading PNG image from memory. | |
5656 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5657 | bytes from the input to DATA. */ | |
5658 | ||
5659 | static void | |
d3da34e0 | 5660 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 | 5661 | { |
7d652d97 | 5662 | struct png_memory_storage *tbr = fn_png_get_io_ptr (png_ptr); |
4ef0d4d0 KS |
5663 | |
5664 | if (length > tbr->len - tbr->index) | |
5665 | fn_png_error (png_ptr, "Read error"); | |
5666 | ||
72af86bd | 5667 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5668 | tbr->index = tbr->index + length; |
5669 | } | |
5670 | ||
b0da69a7 | 5671 | |
9a22a004 JB |
5672 | /* Function set as reader function when reading PNG image from a file. |
5673 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5674 | bytes from the input to DATA. */ | |
5675 | ||
5676 | static void | |
d3da34e0 | 5677 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 | 5678 | { |
7d652d97 | 5679 | FILE *fp = fn_png_get_io_ptr (png_ptr); |
9a22a004 JB |
5680 | |
5681 | if (fread (data, 1, length, fp) < length) | |
5682 | fn_png_error (png_ptr, "Read error"); | |
5683 | } | |
5684 | ||
5685 | ||
578098f3 | 5686 | /* Load PNG image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
5687 | successful. */ |
5688 | ||
40bce90b PE |
5689 | struct png_load_context |
5690 | { | |
0328b6de | 5691 | /* These are members so that longjmp doesn't munge local variables. */ |
40bce90b PE |
5692 | png_struct *png_ptr; |
5693 | png_info *info_ptr; | |
5694 | png_info *end_info; | |
5695 | FILE *fp; | |
5696 | png_byte *pixels; | |
5697 | png_byte **rows; | |
5698 | }; | |
5699 | ||
578098f3 | 5700 | static bool |
40bce90b | 5701 | png_load_body (struct frame *f, struct image *img, struct png_load_context *c) |
4ef0d4d0 KS |
5702 | { |
5703 | Lisp_Object file, specified_file; | |
5704 | Lisp_Object specified_data; | |
5adf60bc PE |
5705 | int x, y; |
5706 | ptrdiff_t i; | |
4ef0d4d0 | 5707 | XImagePtr ximg, mask_img = NULL; |
40bce90b | 5708 | png_struct *png_ptr; |
4ef0d4d0 | 5709 | png_info *info_ptr = NULL, *end_info = NULL; |
40bce90b | 5710 | FILE *fp = NULL; |
4ef0d4d0 | 5711 | png_byte sig[8]; |
40bce90b PE |
5712 | png_byte *pixels = NULL; |
5713 | png_byte **rows = NULL; | |
4ef0d4d0 KS |
5714 | png_uint_32 width, height; |
5715 | int bit_depth, color_type, interlace_type; | |
5716 | png_byte channels; | |
5717 | png_uint_32 row_bytes; | |
578098f3 | 5718 | bool transparent_p; |
4ef0d4d0 KS |
5719 | struct png_memory_storage tbr; /* Data to be read */ |
5720 | ||
5721 | /* Find out what file to load. */ | |
5722 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5723 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5724 | |
5725 | if (NILP (specified_data)) | |
5726 | { | |
5727 | file = x_find_image_file (specified_file); | |
5728 | if (!STRINGP (file)) | |
5729 | { | |
5730 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5731 | return 0; |
5732 | } | |
5733 | ||
5734 | /* Open the image file. */ | |
406af475 | 5735 | fp = emacs_fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5736 | if (!fp) |
5737 | { | |
5738 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5739 | return 0; |
5740 | } | |
5741 | ||
5742 | /* Check PNG signature. */ | |
5743 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5744 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 | 5745 | { |
4ef0d4d0 | 5746 | fclose (fp); |
3f5bef16 | 5747 | image_error ("Not a PNG file: `%s'", file, Qnil); |
4ef0d4d0 KS |
5748 | return 0; |
5749 | } | |
5750 | } | |
5751 | else | |
5752 | { | |
7574650a AS |
5753 | if (!STRINGP (specified_data)) |
5754 | { | |
5755 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5756 | return 0; | |
5757 | } | |
5758 | ||
4ef0d4d0 KS |
5759 | /* Read from memory. */ |
5760 | tbr.bytes = SDATA (specified_data); | |
5761 | tbr.len = SBYTES (specified_data); | |
5762 | tbr.index = 0; | |
5763 | ||
5764 | /* Check PNG signature. */ | |
5765 | if (tbr.len < sizeof sig | |
285d07e2 | 5766 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5767 | { |
5768 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5769 | return 0; |
5770 | } | |
5771 | ||
5772 | /* Need to skip past the signature. */ | |
5773 | tbr.bytes += sizeof (sig); | |
5774 | } | |
5775 | ||
df61c790 AS |
5776 | /* Initialize read and info structs for PNG lib. */ |
5777 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5778 | NULL, my_png_error, | |
5779 | my_png_warning); | |
40bce90b | 5780 | if (png_ptr) |
4ef0d4d0 | 5781 | { |
40bce90b PE |
5782 | info_ptr = fn_png_create_info_struct (png_ptr); |
5783 | end_info = fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
5784 | } |
5785 | ||
40bce90b PE |
5786 | c->png_ptr = png_ptr; |
5787 | c->info_ptr = info_ptr; | |
5788 | c->end_info = end_info; | |
5789 | c->fp = fp; | |
5790 | c->pixels = pixels; | |
5791 | c->rows = rows; | |
5792 | ||
5793 | if (! (info_ptr && end_info)) | |
4ef0d4d0 | 5794 | { |
40bce90b PE |
5795 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
5796 | png_ptr = 0; | |
4ef0d4d0 | 5797 | } |
40bce90b | 5798 | if (! png_ptr) |
4ef0d4d0 | 5799 | { |
4ef0d4d0 | 5800 | if (fp) fclose (fp); |
4ef0d4d0 KS |
5801 | return 0; |
5802 | } | |
5803 | ||
5804 | /* Set error jump-back. We come back here when the PNG library | |
5805 | detects an error. */ | |
d1eaf34b | 5806 | if (FAST_SETJMP (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5807 | { |
5808 | error: | |
40bce90b PE |
5809 | if (c->png_ptr) |
5810 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); | |
5811 | xfree (c->pixels); | |
5812 | xfree (c->rows); | |
5813 | if (c->fp) | |
5814 | fclose (c->fp); | |
4ef0d4d0 KS |
5815 | return 0; |
5816 | } | |
5817 | ||
40bce90b PE |
5818 | /* Silence a bogus diagnostic; see GCC bug 54561. */ |
5819 | IF_LINT (fp = c->fp); | |
5820 | ||
4ef0d4d0 KS |
5821 | /* Read image info. */ |
5822 | if (!NILP (specified_data)) | |
7d652d97 | 5823 | fn_png_set_read_fn (png_ptr, &tbr, png_read_from_memory); |
4ef0d4d0 | 5824 | else |
7d652d97 | 5825 | fn_png_set_read_fn (png_ptr, fp, png_read_from_file); |
4ef0d4d0 KS |
5826 | |
5827 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5828 | fn_png_read_info (png_ptr, info_ptr); | |
5829 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5830 | &interlace_type, NULL, NULL); | |
5831 | ||
3f791afe PE |
5832 | if (! (width <= INT_MAX && height <= INT_MAX |
5833 | && check_image_size (f, width, height))) | |
10ea2b82 JR |
5834 | { |
5835 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5836 | goto error; | |
5837 | } | |
ca4aa935 PE |
5838 | |
5839 | /* Create the X image and pixmap now, so that the work below can be | |
5840 | omitted if the image is too large for X. */ | |
547c9269 | 5841 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0)) |
ca4aa935 PE |
5842 | goto error; |
5843 | ||
4ef0d4d0 KS |
5844 | /* If image contains simply transparency data, we prefer to |
5845 | construct a clipping mask. */ | |
5846 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5847 | transparent_p = 1; | |
5848 | else | |
5849 | transparent_p = 0; | |
5850 | ||
5851 | /* This function is easier to write if we only have to handle | |
5852 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5853 | transform other formats into that format. */ | |
5854 | ||
5855 | /* Strip more than 8 bits per channel. */ | |
5856 | if (bit_depth == 16) | |
5857 | fn_png_set_strip_16 (png_ptr); | |
5858 | ||
5859 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5860 | if available. */ | |
5861 | fn_png_set_expand (png_ptr); | |
5862 | ||
5863 | /* Convert grayscale images to RGB. */ | |
5864 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5865 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5866 | fn_png_set_gray_to_rgb (png_ptr); | |
5867 | ||
4ef0d4d0 KS |
5868 | /* Handle alpha channel by combining the image with a background |
5869 | color. Do this only if a real alpha channel is supplied. For | |
5870 | simple transparency, we prefer a clipping mask. */ | |
5871 | if (!transparent_p) | |
5872 | { | |
917ac1a9 | 5873 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5874 | Lisp_Object specified_bg |
5875 | = image_spec_value (img->spec, QCbackground, NULL); | |
f62bc934 | 5876 | XColor color; |
4ef0d4d0 | 5877 | |
f62bc934 PE |
5878 | /* If the user specified a color, try to use it; if not, use the |
5879 | current frame background, ignoring any default background | |
5880 | color set by the image. */ | |
5881 | if (STRINGP (specified_bg) | |
5882 | ? x_defined_color (f, SSDATA (specified_bg), &color, false) | |
5883 | : (x_query_frame_background_color (f, &color), true)) | |
4ef0d4d0 KS |
5884 | /* The user specified `:background', use that. */ |
5885 | { | |
f62bc934 PE |
5886 | int shift = bit_depth == 16 ? 0 : 8; |
5887 | png_color_16 bg = { 0 }; | |
5888 | bg.red = color.red >> shift; | |
5889 | bg.green = color.green >> shift; | |
5890 | bg.blue = color.blue >> shift; | |
4ef0d4d0 | 5891 | |
f62bc934 | 5892 | fn_png_set_background (png_ptr, &bg, |
4ef0d4d0 KS |
5893 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); |
5894 | } | |
5895 | } | |
5896 | ||
5897 | /* Update info structure. */ | |
5898 | fn_png_read_update_info (png_ptr, info_ptr); | |
5899 | ||
5900 | /* Get number of channels. Valid values are 1 for grayscale images | |
5901 | and images with a palette, 2 for grayscale images with transparency | |
5902 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5903 | images with alpha channel, i.e. RGBA. If conversions above were | |
5904 | sufficient we should only have 3 or 4 channels here. */ | |
5905 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
a54e2c05 | 5906 | eassert (channels == 3 || channels == 4); |
4ef0d4d0 KS |
5907 | |
5908 | /* Number of bytes needed for one row of the image. */ | |
5909 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5910 | ||
5911 | /* Allocate memory for the image. */ | |
3f791afe PE |
5912 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height |
5913 | || min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes) | |
5914 | memory_full (SIZE_MAX); | |
c1ade6f7 RT |
5915 | c->pixels = pixels = xmalloc_atomic (sizeof *pixels * row_bytes * height); |
5916 | c->rows = rows = xmalloc_atomic (height * sizeof *rows); | |
4ef0d4d0 KS |
5917 | for (i = 0; i < height; ++i) |
5918 | rows[i] = pixels + i * row_bytes; | |
5919 | ||
5920 | /* Read the entire image. */ | |
5921 | fn_png_read_image (png_ptr, rows); | |
5922 | fn_png_read_end (png_ptr, info_ptr); | |
5923 | if (fp) | |
5924 | { | |
5925 | fclose (fp); | |
40bce90b | 5926 | c->fp = NULL; |
4ef0d4d0 KS |
5927 | } |
5928 | ||
4ef0d4d0 KS |
5929 | /* Create an image and pixmap serving as mask if the PNG image |
5930 | contains an alpha channel. */ | |
5931 | if (channels == 4 | |
5932 | && !transparent_p | |
547c9269 YM |
5933 | && !image_create_x_image_and_pixmap (f, img, width, height, 1, |
5934 | &mask_img, 1)) | |
4ef0d4d0 KS |
5935 | { |
5936 | x_destroy_x_image (ximg); | |
547c9269 | 5937 | x_clear_image_1 (f, img, CLEAR_IMAGE_PIXMAP); |
4ef0d4d0 KS |
5938 | goto error; |
5939 | } | |
5940 | ||
5941 | /* Fill the X image and mask from PNG data. */ | |
5942 | init_color_table (); | |
5943 | ||
5944 | for (y = 0; y < height; ++y) | |
5945 | { | |
5946 | png_byte *p = rows[y]; | |
5947 | ||
5948 | for (x = 0; x < width; ++x) | |
5949 | { | |
13464394 | 5950 | int r, g, b; |
4ef0d4d0 KS |
5951 | |
5952 | r = *p++ << 8; | |
5953 | g = *p++ << 8; | |
5954 | b = *p++ << 8; | |
5955 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5956 | /* An alpha channel, aka mask channel, associates variable | |
5957 | transparency with an image. Where other image formats | |
5958 | support binary transparency---fully transparent or fully | |
5959 | opaque---PNG allows up to 254 levels of partial transparency. | |
5960 | The PNG library implements partial transparency by combining | |
5961 | the image with a specified background color. | |
5962 | ||
5963 | I'm not sure how to handle this here nicely: because the | |
5964 | background on which the image is displayed may change, for | |
5965 | real alpha channel support, it would be necessary to create | |
5966 | a new image for each possible background. | |
5967 | ||
5968 | What I'm doing now is that a mask is created if we have | |
5969 | boolean transparency information. Otherwise I'm using | |
5970 | the frame's background color to combine the image with. */ | |
5971 | ||
5972 | if (channels == 4) | |
5973 | { | |
5974 | if (mask_img) | |
9ecf6403 | 5975 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5976 | ++p; |
5977 | } | |
5978 | } | |
5979 | } | |
5980 | ||
5981 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5982 | /* Set IMG's background color from the PNG image, unless the user | |
5983 | overrode it. */ | |
5984 | { | |
5985 | png_color_16 *bg; | |
5986 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5987 | { | |
5988 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5989 | img->background_valid = 1; | |
5990 | } | |
5991 | } | |
5992 | ||
5993 | #ifdef COLOR_TABLE_SUPPORT | |
5994 | /* Remember colors allocated for this image. */ | |
5995 | img->colors = colors_in_color_table (&img->ncolors); | |
5996 | free_color_table (); | |
5997 | #endif /* COLOR_TABLE_SUPPORT */ | |
5998 | ||
5999 | /* Clean up. */ | |
40bce90b | 6000 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
4ef0d4d0 KS |
6001 | xfree (rows); |
6002 | xfree (pixels); | |
6003 | ||
6004 | img->width = width; | |
6005 | img->height = height; | |
6006 | ||
2e09fef1 EZ |
6007 | /* Maybe fill in the background field while we have ximg handy. |
6008 | Casting avoids a GCC warning. */ | |
6009 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 | 6010 | |
547c9269 YM |
6011 | /* Put ximg into the image. */ |
6012 | image_put_x_image (f, img, ximg, 0); | |
4ef0d4d0 KS |
6013 | |
6014 | /* Same for the mask. */ | |
6015 | if (mask_img) | |
6016 | { | |
2e09fef1 EZ |
6017 | /* Fill in the background_transparent field while we have the |
6018 | mask handy. Casting avoids a GCC warning. */ | |
6019 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 | 6020 | |
547c9269 | 6021 | image_put_x_image (f, img, mask_img, 1); |
4ef0d4d0 KS |
6022 | } |
6023 | ||
4ef0d4d0 KS |
6024 | return 1; |
6025 | } | |
6026 | ||
578098f3 | 6027 | static bool |
40bce90b PE |
6028 | png_load (struct frame *f, struct image *img) |
6029 | { | |
6030 | struct png_load_context c; | |
6031 | return png_load_body (f, img, &c); | |
6032 | } | |
6033 | ||
f62bc934 | 6034 | #elif defined HAVE_NS |
4ef0d4d0 | 6035 | |
578098f3 | 6036 | static bool |
edfda783 AR |
6037 | png_load (struct frame *f, struct image *img) |
6038 | { | |
5e617bc2 JB |
6039 | return ns_load_image (f, img, |
6040 | image_spec_value (img->spec, QCfile, NULL), | |
6041 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 | 6042 | } |
edfda783 | 6043 | |
f62bc934 | 6044 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
6045 | |
6046 | ||
6047 | \f | |
6048 | /*********************************************************************** | |
6049 | JPEG | |
6050 | ***********************************************************************/ | |
6051 | ||
9e2a2647 | 6052 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 6053 | |
578098f3 PE |
6054 | static bool jpeg_image_p (Lisp_Object object); |
6055 | static bool jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6056 | |
6057 | /* The symbol `jpeg' identifying images of this type. */ | |
6058 | ||
955cbe7b | 6059 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
6060 | |
6061 | /* Indices of image specification fields in gs_format, below. */ | |
6062 | ||
6063 | enum jpeg_keyword_index | |
6064 | { | |
6065 | JPEG_TYPE, | |
6066 | JPEG_DATA, | |
6067 | JPEG_FILE, | |
6068 | JPEG_ASCENT, | |
6069 | JPEG_MARGIN, | |
6070 | JPEG_RELIEF, | |
6071 | JPEG_ALGORITHM, | |
6072 | JPEG_HEURISTIC_MASK, | |
6073 | JPEG_MASK, | |
6074 | JPEG_BACKGROUND, | |
6075 | JPEG_LAST | |
6076 | }; | |
6077 | ||
6078 | /* Vector of image_keyword structures describing the format | |
6079 | of valid user-defined image specifications. */ | |
6080 | ||
91433552 | 6081 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
6082 | { |
6083 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6084 | {":data", IMAGE_STRING_VALUE, 0}, | |
6085 | {":file", IMAGE_STRING_VALUE, 0}, | |
6086 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6087 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6088 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6089 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6090 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6091 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6092 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6093 | }; | |
6094 | ||
a9e7a9d5 | 6095 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 6096 | static bool init_jpeg_functions (void); |
bb4d86b4 CY |
6097 | #else |
6098 | #define init_jpeg_functions NULL | |
6099 | #endif | |
6100 | ||
4ef0d4d0 KS |
6101 | /* Structure describing the image type `jpeg'. */ |
6102 | ||
6103 | static struct image_type jpeg_type = | |
6104 | { | |
6105 | &Qjpeg, | |
6106 | jpeg_image_p, | |
6107 | jpeg_load, | |
6108 | x_clear_image, | |
bb4d86b4 | 6109 | init_jpeg_functions, |
4ef0d4d0 KS |
6110 | NULL |
6111 | }; | |
6112 | ||
578098f3 | 6113 | /* Return true if OBJECT is a valid JPEG image specification. */ |
4ef0d4d0 | 6114 | |
578098f3 | 6115 | static bool |
d3da34e0 | 6116 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6117 | { |
6118 | struct image_keyword fmt[JPEG_LAST]; | |
6119 | ||
72af86bd | 6120 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
6121 | |
6122 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6123 | return 0; | |
6124 | ||
6125 | /* Must specify either the :data or :file keyword. */ | |
6126 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6127 | } | |
6128 | ||
9e2a2647 | 6129 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6130 | |
6131 | #ifdef HAVE_JPEG | |
6132 | ||
6133 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6134 | jconfig.h. */ | |
6135 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6136 | #undef HAVE_STDLIB_H |
6137 | #endif /* HAVE_STLIB_H */ | |
6138 | ||
66354420 | 6139 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6140 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6141 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6142 | #define __WIN32__ 1 |
6143 | #endif | |
6144 | ||
93aa5c81 DC |
6145 | /* rpcndr.h (via windows.h) and jpeglib.h both define boolean types. |
6146 | Some versions of jpeglib try to detect whether rpcndr.h is loaded, | |
6147 | using the Windows boolean type instead of the jpeglib boolean type | |
6148 | if so. Cygwin jpeglib, however, doesn't try to detect whether its | |
6149 | headers are included along with windows.h, so under Cygwin, jpeglib | |
6150 | attempts to define a conflicting boolean type. Worse, forcing | |
6151 | Cygwin jpeglib headers to use the Windows boolean type doesn't work | |
6152 | because it created an ABI incompatibility between the | |
6153 | already-compiled jpeg library and the header interface definition. | |
6154 | ||
6155 | The best we can do is to define jpeglib's boolean type to a | |
6156 | different name. This name, jpeg_boolean, remains in effect through | |
6157 | the rest of image.c. | |
6158 | */ | |
a9e7a9d5 | 6159 | #if defined CYGWIN && defined HAVE_NTGUI |
0fda9b75 | 6160 | #define boolean jpeg_boolean |
2ae3a8a7 | 6161 | #endif |
4ef0d4d0 KS |
6162 | #include <jpeglib.h> |
6163 | #include <jerror.h> | |
4ef0d4d0 | 6164 | |
0fda9b75 | 6165 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6166 | |
6167 | /* JPEG library details. */ | |
14beddf4 CY |
6168 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6169 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6170 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6171 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6172 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6173 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6174 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6175 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 | 6176 | |
578098f3 | 6177 | static bool |
d07ff9db | 6178 | init_jpeg_functions (void) |
4ef0d4d0 KS |
6179 | { |
6180 | HMODULE library; | |
6181 | ||
d07ff9db | 6182 | if (!(library = w32_delayed_load (Qjpeg))) |
4ef0d4d0 KS |
6183 | return 0; |
6184 | ||
6185 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6186 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6187 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6188 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6189 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6190 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6191 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6192 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6193 | return 1; | |
6194 | } | |
6195 | ||
6196 | /* Wrapper since we can't directly assign the function pointer | |
6197 | to another function pointer that was declared more completely easily. */ | |
6198 | static boolean | |
7c3320d8 | 6199 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6200 | { |
6201 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6202 | } | |
6203 | ||
6204 | #else | |
6205 | ||
5e617bc2 | 6206 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress (a) |
4ef0d4d0 KS |
6207 | #define fn_jpeg_start_decompress jpeg_start_decompress |
6208 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6209 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6210 | #define fn_jpeg_read_header jpeg_read_header | |
6211 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6212 | #define fn_jpeg_std_error jpeg_std_error |
6213 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6214 | ||
0fda9b75 | 6215 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6216 | |
6217 | struct my_jpeg_error_mgr | |
6218 | { | |
6219 | struct jpeg_error_mgr pub; | |
0328b6de | 6220 | sys_jmp_buf setjmp_buffer; |
40bce90b | 6221 | |
0328b6de | 6222 | /* The remaining members are so that longjmp doesn't munge local |
40bce90b PE |
6223 | variables. */ |
6224 | struct jpeg_decompress_struct cinfo; | |
6225 | enum | |
6226 | { | |
6227 | MY_JPEG_ERROR_EXIT, | |
6228 | MY_JPEG_INVALID_IMAGE_SIZE, | |
6229 | MY_JPEG_CANNOT_CREATE_X | |
6230 | } failure_code; | |
4ef0d4d0 KS |
6231 | }; |
6232 | ||
6233 | ||
845ca893 | 6234 | static _Noreturn void |
d3da34e0 | 6235 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6236 | { |
6237 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
40bce90b | 6238 | mgr->failure_code = MY_JPEG_ERROR_EXIT; |
0328b6de | 6239 | sys_longjmp (mgr->setjmp_buffer, 1); |
4ef0d4d0 KS |
6240 | } |
6241 | ||
6242 | ||
6243 | /* Init source method for JPEG data source manager. Called by | |
6244 | jpeg_read_header() before any data is actually read. See | |
6245 | libjpeg.doc from the JPEG lib distribution. */ | |
6246 | ||
6247 | static void | |
d3da34e0 | 6248 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6249 | { |
6250 | } | |
6251 | ||
6252 | ||
6253 | /* Method to terminate data source. Called by | |
6254 | jpeg_finish_decompress() after all data has been processed. */ | |
6255 | ||
6256 | static void | |
d3da34e0 | 6257 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6258 | { |
6259 | } | |
6260 | ||
6261 | ||
6262 | /* Fill input buffer method for JPEG data source manager. Called | |
6263 | whenever more data is needed. We read the whole image in one step, | |
6264 | so this only adds a fake end of input marker at the end. */ | |
6265 | ||
5a1539f3 | 6266 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6267 | |
4ef0d4d0 | 6268 | static boolean |
d3da34e0 | 6269 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6270 | { |
6271 | /* Insert a fake EOI marker. */ | |
6272 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6273 | |
5a1539f3 MB |
6274 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6275 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6276 | |
5a1539f3 | 6277 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6278 | src->bytes_in_buffer = 2; |
e0e30823 | 6279 | return 1; |
4ef0d4d0 KS |
6280 | } |
6281 | ||
6282 | ||
6283 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6284 | is the JPEG data source manager. */ | |
6285 | ||
6286 | static void | |
d3da34e0 | 6287 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 | 6288 | { |
7d652d97 | 6289 | struct jpeg_source_mgr *src = cinfo->src; |
4ef0d4d0 KS |
6290 | |
6291 | if (src) | |
6292 | { | |
6293 | if (num_bytes > src->bytes_in_buffer) | |
6294 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6295 | ||
6296 | src->bytes_in_buffer -= num_bytes; | |
6297 | src->next_input_byte += num_bytes; | |
6298 | } | |
6299 | } | |
6300 | ||
6301 | ||
4ef0d4d0 KS |
6302 | /* Set up the JPEG lib for reading an image from DATA which contains |
6303 | LEN bytes. CINFO is the decompression info structure created for | |
6304 | reading the image. */ | |
6305 | ||
6306 | static void | |
92547ff9 | 6307 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, ptrdiff_t len) |
4ef0d4d0 | 6308 | { |
7d652d97 | 6309 | struct jpeg_source_mgr *src = cinfo->src; |
4ef0d4d0 | 6310 | |
7d652d97 | 6311 | if (! src) |
4ef0d4d0 KS |
6312 | { |
6313 | /* First time for this JPEG object? */ | |
7d652d97 PE |
6314 | src = cinfo->mem->alloc_small ((j_common_ptr) cinfo, |
6315 | JPOOL_PERMANENT, sizeof *src); | |
6316 | cinfo->src = src; | |
4ef0d4d0 KS |
6317 | src->next_input_byte = data; |
6318 | } | |
6319 | ||
b25a72ab JB |
6320 | src->init_source = our_common_init_source; |
6321 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6322 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6323 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6324 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6325 | src->bytes_in_buffer = len; |
6326 | src->next_input_byte = data; | |
6327 | } | |
6328 | ||
6329 | ||
b25a72ab JB |
6330 | struct jpeg_stdio_mgr |
6331 | { | |
6332 | struct jpeg_source_mgr mgr; | |
6333 | boolean finished; | |
6334 | FILE *file; | |
6335 | JOCTET *buffer; | |
6336 | }; | |
6337 | ||
6338 | ||
6339 | /* Size of buffer to read JPEG from file. | |
6340 | Not too big, as we want to use alloc_small. */ | |
6341 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6342 | ||
6343 | ||
6344 | /* Fill input buffer method for JPEG data source manager. Called | |
6345 | whenever more data is needed. The data is read from a FILE *. */ | |
6346 | ||
6347 | static boolean | |
d3da34e0 | 6348 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6349 | { |
6350 | struct jpeg_stdio_mgr *src; | |
6351 | ||
6352 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6353 | if (!src->finished) | |
6354 | { | |
3f791afe | 6355 | ptrdiff_t bytes; |
b25a72ab JB |
6356 | |
6357 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6358 | if (bytes > 0) | |
6359 | src->mgr.bytes_in_buffer = bytes; | |
6360 | else | |
6361 | { | |
6362 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6363 | src->finished = 1; | |
6364 | src->buffer[0] = (JOCTET) 0xFF; | |
6365 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6366 | src->mgr.bytes_in_buffer = 2; | |
6367 | } | |
6368 | src->mgr.next_input_byte = src->buffer; | |
6369 | } | |
6370 | ||
6371 | return 1; | |
6372 | } | |
6373 | ||
6374 | ||
6375 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6376 | is the JPEG data source manager. */ | |
6377 | ||
6378 | static void | |
d3da34e0 | 6379 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6380 | { |
6381 | struct jpeg_stdio_mgr *src; | |
6382 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6383 | ||
6384 | while (num_bytes > 0 && !src->finished) | |
6385 | { | |
6386 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6387 | { | |
6388 | src->mgr.bytes_in_buffer -= num_bytes; | |
6389 | src->mgr.next_input_byte += num_bytes; | |
6390 | break; | |
6391 | } | |
6392 | else | |
6393 | { | |
6394 | num_bytes -= src->mgr.bytes_in_buffer; | |
6395 | src->mgr.bytes_in_buffer = 0; | |
6396 | src->mgr.next_input_byte = NULL; | |
6397 | ||
6398 | our_stdio_fill_input_buffer (cinfo); | |
6399 | } | |
6400 | } | |
6401 | } | |
6402 | ||
6403 | ||
6404 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6405 | CINFO is the decompression info structure created for | |
6406 | reading the image. */ | |
6407 | ||
6408 | static void | |
d3da34e0 | 6409 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab | 6410 | { |
7d652d97 | 6411 | struct jpeg_stdio_mgr *src = (struct jpeg_stdio_mgr *) cinfo->src; |
b25a72ab | 6412 | |
7d652d97 | 6413 | if (! src) |
b25a72ab JB |
6414 | { |
6415 | /* First time for this JPEG object? */ | |
7d652d97 PE |
6416 | src = cinfo->mem->alloc_small ((j_common_ptr) cinfo, |
6417 | JPOOL_PERMANENT, sizeof *src); | |
6418 | cinfo->src = (struct jpeg_source_mgr *) src; | |
6419 | src->buffer = cinfo->mem->alloc_small ((j_common_ptr) cinfo, | |
6420 | JPOOL_PERMANENT, | |
6421 | JPEG_STDIO_BUFFER_SIZE); | |
b25a72ab JB |
6422 | } |
6423 | ||
6424 | src->file = fp; | |
6425 | src->finished = 0; | |
6426 | src->mgr.init_source = our_common_init_source; | |
6427 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6428 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6429 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6430 | src->mgr.term_source = our_common_term_source; | |
6431 | src->mgr.bytes_in_buffer = 0; | |
6432 | src->mgr.next_input_byte = NULL; | |
6433 | } | |
6434 | ||
4ef0d4d0 KS |
6435 | /* Load image IMG for use on frame F. Patterned after example.c |
6436 | from the JPEG lib. */ | |
6437 | ||
578098f3 | 6438 | static bool |
40bce90b PE |
6439 | jpeg_load_body (struct frame *f, struct image *img, |
6440 | struct my_jpeg_error_mgr *mgr) | |
4ef0d4d0 | 6441 | { |
4ef0d4d0 KS |
6442 | Lisp_Object file, specified_file; |
6443 | Lisp_Object specified_data; | |
34e856d5 PE |
6444 | /* The 'volatile' silences a bogus diagnostic; see GCC bug 54561. */ |
6445 | FILE * IF_LINT (volatile) fp = NULL; | |
4ef0d4d0 KS |
6446 | JSAMPARRAY buffer; |
6447 | int row_stride, x, y; | |
6448 | XImagePtr ximg = NULL; | |
4ef0d4d0 KS |
6449 | unsigned long *colors; |
6450 | int width, height; | |
4ef0d4d0 KS |
6451 | |
6452 | /* Open the JPEG file. */ | |
6453 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6454 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6455 | |
6456 | if (NILP (specified_data)) | |
6457 | { | |
6458 | file = x_find_image_file (specified_file); | |
6459 | if (!STRINGP (file)) | |
6460 | { | |
6461 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6462 | return 0; |
6463 | } | |
6464 | ||
406af475 | 6465 | fp = emacs_fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6466 | if (fp == NULL) |
6467 | { | |
6468 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6469 | return 0; |
6470 | } | |
6471 | } | |
7574650a AS |
6472 | else if (!STRINGP (specified_data)) |
6473 | { | |
6474 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6475 | return 0; | |
6476 | } | |
4ef0d4d0 KS |
6477 | |
6478 | /* Customize libjpeg's error handling to call my_error_exit when an | |
df61c790 | 6479 | error is detected. This function will perform a longjmp. */ |
40bce90b PE |
6480 | mgr->cinfo.err = fn_jpeg_std_error (&mgr->pub); |
6481 | mgr->pub.error_exit = my_error_exit; | |
0328b6de | 6482 | if (sys_setjmp (mgr->setjmp_buffer)) |
4ef0d4d0 | 6483 | { |
40bce90b | 6484 | switch (mgr->failure_code) |
4ef0d4d0 | 6485 | { |
40bce90b PE |
6486 | case MY_JPEG_ERROR_EXIT: |
6487 | { | |
6488 | char buf[JMSG_LENGTH_MAX]; | |
6489 | mgr->cinfo.err->format_message ((j_common_ptr) &mgr->cinfo, buf); | |
6490 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
6491 | build_string (buf)); | |
6492 | break; | |
6493 | } | |
6494 | ||
6495 | case MY_JPEG_INVALID_IMAGE_SIZE: | |
6496 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
6497 | break; | |
6498 | ||
6499 | case MY_JPEG_CANNOT_CREATE_X: | |
6500 | break; | |
4ef0d4d0 KS |
6501 | } |
6502 | ||
6503 | /* Close the input file and destroy the JPEG object. */ | |
6504 | if (fp) | |
40bce90b PE |
6505 | fclose (fp); |
6506 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 KS |
6507 | |
6508 | /* If we already have an XImage, free that. */ | |
6509 | x_destroy_x_image (ximg); | |
6510 | ||
6511 | /* Free pixmap and colors. */ | |
6512 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6513 | return 0; |
6514 | } | |
6515 | ||
6516 | /* Create the JPEG decompression object. Let it read from fp. | |
6517 | Read the JPEG image header. */ | |
40bce90b | 6518 | fn_jpeg_CreateDecompress (&mgr->cinfo, JPEG_LIB_VERSION, sizeof *&mgr->cinfo); |
4ef0d4d0 KS |
6519 | |
6520 | if (NILP (specified_data)) | |
40bce90b | 6521 | jpeg_file_src (&mgr->cinfo, fp); |
4ef0d4d0 | 6522 | else |
40bce90b | 6523 | jpeg_memory_src (&mgr->cinfo, SDATA (specified_data), |
4ef0d4d0 KS |
6524 | SBYTES (specified_data)); |
6525 | ||
40bce90b | 6526 | fn_jpeg_read_header (&mgr->cinfo, 1); |
4ef0d4d0 KS |
6527 | |
6528 | /* Customize decompression so that color quantization will be used. | |
6529 | Start decompression. */ | |
40bce90b PE |
6530 | mgr->cinfo.quantize_colors = 1; |
6531 | fn_jpeg_start_decompress (&mgr->cinfo); | |
6532 | width = img->width = mgr->cinfo.output_width; | |
6533 | height = img->height = mgr->cinfo.output_height; | |
4ef0d4d0 | 6534 | |
f1f25b99 CY |
6535 | if (!check_image_size (f, width, height)) |
6536 | { | |
40bce90b | 6537 | mgr->failure_code = MY_JPEG_INVALID_IMAGE_SIZE; |
0328b6de | 6538 | sys_longjmp (mgr->setjmp_buffer, 1); |
f1f25b99 CY |
6539 | } |
6540 | ||
4ef0d4d0 | 6541 | /* Create X image and pixmap. */ |
547c9269 | 6542 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0)) |
40bce90b PE |
6543 | { |
6544 | mgr->failure_code = MY_JPEG_CANNOT_CREATE_X; | |
0328b6de | 6545 | sys_longjmp (mgr->setjmp_buffer, 1); |
40bce90b | 6546 | } |
4ef0d4d0 KS |
6547 | |
6548 | /* Allocate colors. When color quantization is used, | |
40bce90b PE |
6549 | mgr->cinfo.actual_number_of_colors has been set with the number of |
6550 | colors generated, and mgr->cinfo.colormap is a two-dimensional array | |
6551 | of color indices in the range 0..mgr->cinfo.actual_number_of_colors. | |
4ef0d4d0 KS |
6552 | No more than 255 colors will be generated. */ |
6553 | { | |
6554 | int i, ir, ig, ib; | |
6555 | ||
40bce90b | 6556 | if (mgr->cinfo.out_color_components > 2) |
4ef0d4d0 | 6557 | ir = 0, ig = 1, ib = 2; |
40bce90b | 6558 | else if (mgr->cinfo.out_color_components > 1) |
4ef0d4d0 KS |
6559 | ir = 0, ig = 1, ib = 0; |
6560 | else | |
6561 | ir = 0, ig = 0, ib = 0; | |
6562 | ||
6563 | /* Use the color table mechanism because it handles colors that | |
6564 | cannot be allocated nicely. Such colors will be replaced with | |
6565 | a default color, and we don't have to care about which colors | |
6566 | can be freed safely, and which can't. */ | |
6567 | init_color_table (); | |
40bce90b | 6568 | colors = alloca (mgr->cinfo.actual_number_of_colors * sizeof *colors); |
4ef0d4d0 | 6569 | |
40bce90b | 6570 | for (i = 0; i < mgr->cinfo.actual_number_of_colors; ++i) |
4ef0d4d0 KS |
6571 | { |
6572 | /* Multiply RGB values with 255 because X expects RGB values | |
6573 | in the range 0..0xffff. */ | |
40bce90b PE |
6574 | int r = mgr->cinfo.colormap[ir][i] << 8; |
6575 | int g = mgr->cinfo.colormap[ig][i] << 8; | |
6576 | int b = mgr->cinfo.colormap[ib][i] << 8; | |
4ef0d4d0 KS |
6577 | colors[i] = lookup_rgb_color (f, r, g, b); |
6578 | } | |
6579 | ||
6580 | #ifdef COLOR_TABLE_SUPPORT | |
6581 | /* Remember those colors actually allocated. */ | |
6582 | img->colors = colors_in_color_table (&img->ncolors); | |
6583 | free_color_table (); | |
6584 | #endif /* COLOR_TABLE_SUPPORT */ | |
6585 | } | |
6586 | ||
6587 | /* Read pixels. */ | |
40bce90b PE |
6588 | row_stride = width * mgr->cinfo.output_components; |
6589 | buffer = mgr->cinfo.mem->alloc_sarray ((j_common_ptr) &mgr->cinfo, | |
6590 | JPOOL_IMAGE, row_stride, 1); | |
4ef0d4d0 KS |
6591 | for (y = 0; y < height; ++y) |
6592 | { | |
40bce90b PE |
6593 | fn_jpeg_read_scanlines (&mgr->cinfo, buffer, 1); |
6594 | for (x = 0; x < mgr->cinfo.output_width; ++x) | |
4ef0d4d0 KS |
6595 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); |
6596 | } | |
6597 | ||
6598 | /* Clean up. */ | |
40bce90b PE |
6599 | fn_jpeg_finish_decompress (&mgr->cinfo); |
6600 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 | 6601 | if (fp) |
40bce90b | 6602 | fclose (fp); |
4ef0d4d0 KS |
6603 | |
6604 | /* Maybe fill in the background field while we have ximg handy. */ | |
6605 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6606 | /* Casting avoids a GCC warning. */ |
6607 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 | 6608 | |
547c9269 YM |
6609 | /* Put ximg into the image. */ |
6610 | image_put_x_image (f, img, ximg, 0); | |
4ef0d4d0 KS |
6611 | return 1; |
6612 | } | |
6613 | ||
578098f3 | 6614 | static bool |
40bce90b PE |
6615 | jpeg_load (struct frame *f, struct image *img) |
6616 | { | |
6617 | struct my_jpeg_error_mgr mgr; | |
6618 | return jpeg_load_body (f, img, &mgr); | |
6619 | } | |
6620 | ||
4ef0d4d0 KS |
6621 | #else /* HAVE_JPEG */ |
6622 | ||
edfda783 | 6623 | #ifdef HAVE_NS |
578098f3 | 6624 | static bool |
edfda783 AR |
6625 | jpeg_load (struct frame *f, struct image *img) |
6626 | { | |
ed3751c8 JB |
6627 | return ns_load_image (f, img, |
6628 | image_spec_value (img->spec, QCfile, NULL), | |
6629 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6630 | } |
6631 | #endif /* HAVE_NS */ | |
6632 | ||
4ef0d4d0 KS |
6633 | #endif /* !HAVE_JPEG */ |
6634 | ||
6635 | ||
6636 | \f | |
6637 | /*********************************************************************** | |
6638 | TIFF | |
6639 | ***********************************************************************/ | |
6640 | ||
9e2a2647 | 6641 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6642 | |
578098f3 PE |
6643 | static bool tiff_image_p (Lisp_Object object); |
6644 | static bool tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6645 | |
6646 | /* The symbol `tiff' identifying images of this type. */ | |
6647 | ||
955cbe7b | 6648 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6649 | |
6650 | /* Indices of image specification fields in tiff_format, below. */ | |
6651 | ||
6652 | enum tiff_keyword_index | |
6653 | { | |
6654 | TIFF_TYPE, | |
6655 | TIFF_DATA, | |
6656 | TIFF_FILE, | |
6657 | TIFF_ASCENT, | |
6658 | TIFF_MARGIN, | |
6659 | TIFF_RELIEF, | |
6660 | TIFF_ALGORITHM, | |
6661 | TIFF_HEURISTIC_MASK, | |
6662 | TIFF_MASK, | |
6663 | TIFF_BACKGROUND, | |
58279503 | 6664 | TIFF_INDEX, |
4ef0d4d0 KS |
6665 | TIFF_LAST |
6666 | }; | |
6667 | ||
6668 | /* Vector of image_keyword structures describing the format | |
6669 | of valid user-defined image specifications. */ | |
6670 | ||
91433552 | 6671 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6672 | { |
6673 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6674 | {":data", IMAGE_STRING_VALUE, 0}, | |
6675 | {":file", IMAGE_STRING_VALUE, 0}, | |
6676 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6677 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6678 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6679 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6680 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6681 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6682 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6683 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6684 | }; |
6685 | ||
33d4113c | 6686 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 6687 | static bool init_tiff_functions (void); |
bb4d86b4 CY |
6688 | #else |
6689 | #define init_tiff_functions NULL | |
6690 | #endif | |
6691 | ||
4ef0d4d0 KS |
6692 | /* Structure describing the image type `tiff'. */ |
6693 | ||
6694 | static struct image_type tiff_type = | |
6695 | { | |
6696 | &Qtiff, | |
6697 | tiff_image_p, | |
6698 | tiff_load, | |
6699 | x_clear_image, | |
bb4d86b4 | 6700 | init_tiff_functions, |
4ef0d4d0 KS |
6701 | NULL |
6702 | }; | |
6703 | ||
578098f3 | 6704 | /* Return true if OBJECT is a valid TIFF image specification. */ |
4ef0d4d0 | 6705 | |
578098f3 | 6706 | static bool |
d3da34e0 | 6707 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6708 | { |
6709 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6710 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6711 | |
6712 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6713 | return 0; | |
6714 | ||
6715 | /* Must specify either the :data or :file keyword. */ | |
6716 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6717 | } | |
6718 | ||
9e2a2647 | 6719 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6720 | |
6721 | #ifdef HAVE_TIFF | |
6722 | ||
6723 | #include <tiffio.h> | |
6724 | ||
0fda9b75 | 6725 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6726 | |
6727 | /* TIFF library details. */ | |
14beddf4 CY |
6728 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6729 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6730 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6731 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6732 | TIFFReadWriteProc, TIFFReadWriteProc, |
6733 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6734 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6735 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6736 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6737 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6738 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 | 6739 | |
578098f3 | 6740 | static bool |
d07ff9db | 6741 | init_tiff_functions (void) |
4ef0d4d0 KS |
6742 | { |
6743 | HMODULE library; | |
6744 | ||
d07ff9db | 6745 | if (!(library = w32_delayed_load (Qtiff))) |
4ef0d4d0 KS |
6746 | return 0; |
6747 | ||
6748 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6749 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6750 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6751 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6752 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6753 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6754 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6755 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6756 | return 1; |
6757 | } | |
6758 | ||
6759 | #else | |
6760 | ||
6761 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6762 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6763 | #define fn_TIFFOpen TIFFOpen | |
6764 | #define fn_TIFFClientOpen TIFFClientOpen | |
6765 | #define fn_TIFFGetField TIFFGetField | |
6766 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6767 | #define fn_TIFFClose TIFFClose | |
58279503 | 6768 | #define fn_TIFFSetDirectory TIFFSetDirectory |
0fda9b75 | 6769 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6770 | |
6771 | ||
6772 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6773 | memory source, but we have to provide a lot of extra functions. | |
6774 | Blah. | |
6775 | ||
6776 | We really only need to implement read and seek, but I am not | |
6777 | convinced that the TIFF library is smart enough not to destroy | |
6778 | itself if we only hand it the function pointers we need to | |
6779 | override. */ | |
6780 | ||
6781 | typedef struct | |
6782 | { | |
6783 | unsigned char *bytes; | |
3f791afe PE |
6784 | ptrdiff_t len; |
6785 | ptrdiff_t index; | |
4ef0d4d0 KS |
6786 | } |
6787 | tiff_memory_source; | |
6788 | ||
3f791afe | 6789 | static tsize_t |
d3da34e0 | 6790 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6791 | { |
6792 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6793 | ||
3f791afe | 6794 | size = min (size, src->len - src->index); |
72af86bd | 6795 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6796 | src->index += size; |
6797 | return size; | |
6798 | } | |
6799 | ||
3f791afe | 6800 | static tsize_t |
d3da34e0 | 6801 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 | 6802 | { |
3f791afe | 6803 | return -1; |
4ef0d4d0 KS |
6804 | } |
6805 | ||
6806 | static toff_t | |
d3da34e0 | 6807 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6808 | { |
6809 | tiff_memory_source *src = (tiff_memory_source *) data; | |
3f791afe | 6810 | ptrdiff_t idx; |
4ef0d4d0 KS |
6811 | |
6812 | switch (whence) | |
6813 | { | |
6814 | case SEEK_SET: /* Go from beginning of source. */ | |
6815 | idx = off; | |
6816 | break; | |
6817 | ||
6818 | case SEEK_END: /* Go from end of source. */ | |
6819 | idx = src->len + off; | |
6820 | break; | |
6821 | ||
6822 | case SEEK_CUR: /* Go from current position. */ | |
6823 | idx = src->index + off; | |
6824 | break; | |
6825 | ||
6826 | default: /* Invalid `whence'. */ | |
6827 | return -1; | |
6828 | } | |
6829 | ||
6830 | if (idx > src->len || idx < 0) | |
6831 | return -1; | |
6832 | ||
6833 | src->index = idx; | |
6834 | return src->index; | |
6835 | } | |
6836 | ||
6837 | static int | |
d3da34e0 | 6838 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6839 | { |
6840 | /* NOOP */ | |
6841 | return 0; | |
6842 | } | |
6843 | ||
6844 | static int | |
d3da34e0 | 6845 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6846 | { |
6847 | /* It is already _IN_ memory. */ | |
6848 | return 0; | |
6849 | } | |
6850 | ||
6851 | static void | |
d3da34e0 | 6852 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6853 | { |
6854 | /* We don't need to do this. */ | |
6855 | } | |
6856 | ||
6857 | static toff_t | |
d3da34e0 | 6858 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6859 | { |
6860 | return ((tiff_memory_source *) data)->len; | |
6861 | } | |
6862 | ||
b41c3a35 EZ |
6863 | /* GCC 3.x on x86 Windows targets has a bug that triggers an internal |
6864 | compiler error compiling tiff_handler, see Bugzilla bug #17406 | |
6865 | (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17406). Declaring | |
6866 | this function as external works around that problem. */ | |
6867 | #if defined (__MINGW32__) && __GNUC__ == 3 | |
6868 | # define MINGW_STATIC | |
6869 | #else | |
6870 | # define MINGW_STATIC static | |
6871 | #endif | |
4ef0d4d0 | 6872 | |
b41c3a35 EZ |
6873 | MINGW_STATIC void |
6874 | tiff_handler (const char *, const char *, const char *, va_list) | |
13464394 | 6875 | ATTRIBUTE_FORMAT_PRINTF (3, 0); |
b41c3a35 | 6876 | MINGW_STATIC void |
13464394 PE |
6877 | tiff_handler (const char *log_format, const char *title, |
6878 | const char *format, va_list ap) | |
6879 | { | |
6880 | /* doprnt is not suitable here, as TIFF handlers are called from | |
6881 | libtiff and are passed arbitrary printf directives. Instead, use | |
6882 | vsnprintf, taking care to be portable to nonstandard environments | |
6883 | where vsnprintf returns -1 on buffer overflow. Since it's just a | |
6884 | log entry, it's OK to truncate it. */ | |
6885 | char buf[4000]; | |
6886 | int len = vsnprintf (buf, sizeof buf, format, ap); | |
6887 | add_to_log (log_format, build_string (title), | |
6888 | make_string (buf, max (0, min (len, sizeof buf - 1)))); | |
6889 | } | |
b41c3a35 | 6890 | #undef MINGW_STATIC |
13464394 | 6891 | |
5e2d4a30 PE |
6892 | static void tiff_error_handler (const char *, const char *, va_list) |
6893 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6894 | static void |
d3da34e0 | 6895 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6896 | { |
13464394 | 6897 | tiff_handler ("TIFF error: %s %s", title, format, ap); |
4ef0d4d0 KS |
6898 | } |
6899 | ||
6900 | ||
5e2d4a30 PE |
6901 | static void tiff_warning_handler (const char *, const char *, va_list) |
6902 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6903 | static void |
d3da34e0 | 6904 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6905 | { |
13464394 | 6906 | tiff_handler ("TIFF warning: %s %s", title, format, ap); |
4ef0d4d0 KS |
6907 | } |
6908 | ||
6909 | ||
578098f3 | 6910 | /* Load TIFF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
6911 | successful. */ |
6912 | ||
578098f3 | 6913 | static bool |
d3da34e0 | 6914 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6915 | { |
6916 | Lisp_Object file, specified_file; | |
6917 | Lisp_Object specified_data; | |
6918 | TIFF *tiff; | |
58279503 | 6919 | int width, height, x, y, count; |
4ef0d4d0 | 6920 | uint32 *buf; |
03d0a109 | 6921 | int rc; |
4ef0d4d0 | 6922 | XImagePtr ximg; |
4ef0d4d0 | 6923 | tiff_memory_source memsrc; |
58279503 | 6924 | Lisp_Object image; |
4ef0d4d0 KS |
6925 | |
6926 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6927 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6928 | |
5e2d4a30 PE |
6929 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6930 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6931 | |
6932 | if (NILP (specified_data)) | |
6933 | { | |
6934 | /* Read from a file */ | |
6935 | file = x_find_image_file (specified_file); | |
6936 | if (!STRINGP (file)) | |
6937 | { | |
6938 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6939 | return 0; |
6940 | } | |
9ab69568 EZ |
6941 | #ifdef WINDOWSNT |
6942 | file = ansi_encode_filename (file); | |
6943 | #endif | |
4ef0d4d0 | 6944 | |
df61c790 | 6945 | /* Try to open the image file. */ |
b19beacc | 6946 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6947 | if (tiff == NULL) |
6948 | { | |
6949 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6950 | return 0; |
6951 | } | |
6952 | } | |
6953 | else | |
6954 | { | |
7574650a AS |
6955 | if (!STRINGP (specified_data)) |
6956 | { | |
6957 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6958 | return 0; | |
6959 | } | |
6960 | ||
4ef0d4d0 KS |
6961 | /* Memory source! */ |
6962 | memsrc.bytes = SDATA (specified_data); | |
6963 | memsrc.len = SBYTES (specified_data); | |
6964 | memsrc.index = 0; | |
6965 | ||
3082f617 | 6966 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
3f791afe PE |
6967 | tiff_read_from_memory, |
6968 | tiff_write_from_memory, | |
df61c790 AS |
6969 | tiff_seek_in_memory, |
6970 | tiff_close_memory, | |
6971 | tiff_size_of_memory, | |
6972 | tiff_mmap_memory, | |
6973 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6974 | |
6975 | if (!tiff) | |
6976 | { | |
6977 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6978 | return 0; |
6979 | } | |
6980 | } | |
6981 | ||
58279503 JR |
6982 | image = image_spec_value (img->spec, QCindex, NULL); |
6983 | if (INTEGERP (image)) | |
6984 | { | |
13464394 PE |
6985 | EMACS_INT ino = XFASTINT (image); |
6986 | if (! (TYPE_MINIMUM (tdir_t) <= ino && ino <= TYPE_MAXIMUM (tdir_t) | |
6987 | && fn_TIFFSetDirectory (tiff, ino))) | |
58279503 JR |
6988 | { |
6989 | image_error ("Invalid image number `%s' in image `%s'", | |
6990 | image, img->spec); | |
6991 | fn_TIFFClose (tiff); | |
58279503 JR |
6992 | return 0; |
6993 | } | |
6994 | } | |
6995 | ||
4ef0d4d0 KS |
6996 | /* Get width and height of the image, and allocate a raster buffer |
6997 | of width x height 32-bit values. */ | |
6998 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6999 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
7000 | |
7001 | if (!check_image_size (f, width, height)) | |
7002 | { | |
10ea2b82 | 7003 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 7004 | fn_TIFFClose (tiff); |
f1f25b99 CY |
7005 | return 0; |
7006 | } | |
7007 | ||
ca4aa935 PE |
7008 | /* Create the X image and pixmap. */ |
7009 | if (! (height <= min (PTRDIFF_MAX, SIZE_MAX) / sizeof *buf / width | |
547c9269 YM |
7010 | && image_create_x_image_and_pixmap (f, img, width, height, 0, |
7011 | &ximg, 0))) | |
ca4aa935 PE |
7012 | { |
7013 | fn_TIFFClose (tiff); | |
7014 | return 0; | |
7015 | } | |
7016 | ||
c1ade6f7 | 7017 | buf = xmalloc_atomic (sizeof *buf * width * height); |
4ef0d4d0 KS |
7018 | |
7019 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
7020 | |
7021 | /* Count the number of images in the file. */ | |
03d0a109 PE |
7022 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
7023 | continue; | |
58279503 JR |
7024 | |
7025 | if (count > 1) | |
b50691aa CY |
7026 | img->lisp_data = Fcons (Qcount, |
7027 | Fcons (make_number (count), | |
7028 | img->lisp_data)); | |
58279503 | 7029 | |
4ef0d4d0 KS |
7030 | fn_TIFFClose (tiff); |
7031 | if (!rc) | |
7032 | { | |
7033 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
7034 | xfree (buf); | |
4ef0d4d0 KS |
7035 | return 0; |
7036 | } | |
7037 | ||
4ef0d4d0 KS |
7038 | /* Initialize the color table. */ |
7039 | init_color_table (); | |
7040 | ||
7041 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
7042 | for (y = 0; y < height; ++y) | |
7043 | { | |
7044 | uint32 *row = buf + y * width; | |
7045 | ||
7046 | for (x = 0; x < width; ++x) | |
7047 | { | |
7048 | uint32 abgr = row[x]; | |
7049 | int r = TIFFGetR (abgr) << 8; | |
7050 | int g = TIFFGetG (abgr) << 8; | |
7051 | int b = TIFFGetB (abgr) << 8; | |
7052 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
7053 | } | |
7054 | } | |
7055 | ||
7056 | #ifdef COLOR_TABLE_SUPPORT | |
7057 | /* Remember the colors allocated for the image. Free the color table. */ | |
7058 | img->colors = colors_in_color_table (&img->ncolors); | |
7059 | free_color_table (); | |
7060 | #endif /* COLOR_TABLE_SUPPORT */ | |
7061 | ||
7062 | img->width = width; | |
7063 | img->height = height; | |
7064 | ||
7065 | /* Maybe fill in the background field while we have ximg handy. */ | |
7066 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7067 | /* Casting avoids a GCC warning on W32. */ |
7068 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 | 7069 | |
547c9269 YM |
7070 | /* Put ximg into the image. */ |
7071 | image_put_x_image (f, img, ximg, 0); | |
4ef0d4d0 KS |
7072 | xfree (buf); |
7073 | ||
4ef0d4d0 KS |
7074 | return 1; |
7075 | } | |
7076 | ||
7077 | #else /* HAVE_TIFF */ | |
7078 | ||
edfda783 | 7079 | #ifdef HAVE_NS |
578098f3 | 7080 | static bool |
edfda783 AR |
7081 | tiff_load (struct frame *f, struct image *img) |
7082 | { | |
ed3751c8 JB |
7083 | return ns_load_image (f, img, |
7084 | image_spec_value (img->spec, QCfile, NULL), | |
7085 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7086 | } |
7087 | #endif /* HAVE_NS */ | |
7088 | ||
4ef0d4d0 KS |
7089 | #endif /* !HAVE_TIFF */ |
7090 | ||
7091 | ||
7092 | \f | |
7093 | /*********************************************************************** | |
7094 | GIF | |
7095 | ***********************************************************************/ | |
7096 | ||
9e2a2647 | 7097 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 7098 | |
578098f3 PE |
7099 | static bool gif_image_p (Lisp_Object object); |
7100 | static bool gif_load (struct frame *f, struct image *img); | |
f57e2426 | 7101 | static void gif_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
7102 | |
7103 | /* The symbol `gif' identifying images of this type. */ | |
7104 | ||
955cbe7b | 7105 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
7106 | |
7107 | /* Indices of image specification fields in gif_format, below. */ | |
7108 | ||
7109 | enum gif_keyword_index | |
7110 | { | |
7111 | GIF_TYPE, | |
7112 | GIF_DATA, | |
7113 | GIF_FILE, | |
7114 | GIF_ASCENT, | |
7115 | GIF_MARGIN, | |
7116 | GIF_RELIEF, | |
7117 | GIF_ALGORITHM, | |
7118 | GIF_HEURISTIC_MASK, | |
7119 | GIF_MASK, | |
7120 | GIF_IMAGE, | |
7121 | GIF_BACKGROUND, | |
7122 | GIF_LAST | |
7123 | }; | |
7124 | ||
7125 | /* Vector of image_keyword structures describing the format | |
7126 | of valid user-defined image specifications. */ | |
7127 | ||
91433552 | 7128 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
7129 | { |
7130 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7131 | {":data", IMAGE_STRING_VALUE, 0}, | |
7132 | {":file", IMAGE_STRING_VALUE, 0}, | |
7133 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7134 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
7135 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7136 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7137 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7138 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 7139 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
7140 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
7141 | }; | |
7142 | ||
a9e7a9d5 | 7143 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 7144 | static bool init_gif_functions (void); |
bb4d86b4 CY |
7145 | #else |
7146 | #define init_gif_functions NULL | |
7147 | #endif | |
7148 | ||
4ef0d4d0 KS |
7149 | /* Structure describing the image type `gif'. */ |
7150 | ||
7151 | static struct image_type gif_type = | |
7152 | { | |
7153 | &Qgif, | |
7154 | gif_image_p, | |
7155 | gif_load, | |
6ac3c7bb | 7156 | gif_clear_image, |
bb4d86b4 | 7157 | init_gif_functions, |
4ef0d4d0 KS |
7158 | NULL |
7159 | }; | |
7160 | ||
6ac3c7bb KS |
7161 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7162 | ||
7163 | static void | |
d3da34e0 | 7164 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 7165 | { |
b50691aa | 7166 | img->lisp_data = Qnil; |
6ac3c7bb KS |
7167 | x_clear_image (f, img); |
7168 | } | |
7169 | ||
578098f3 | 7170 | /* Return true if OBJECT is a valid GIF image specification. */ |
4ef0d4d0 | 7171 | |
578098f3 | 7172 | static bool |
d3da34e0 | 7173 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
7174 | { |
7175 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 7176 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7177 | |
7178 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7179 | return 0; | |
7180 | ||
7181 | /* Must specify either the :data or :file keyword. */ | |
7182 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7183 | } | |
7184 | ||
9e2a2647 | 7185 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7186 | |
7187 | #ifdef HAVE_GIF | |
7188 | ||
9e2a2647 | 7189 | #if defined (HAVE_NTGUI) |
99149625 | 7190 | |
2e09fef1 EZ |
7191 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7192 | Undefine before redefining to avoid a preprocessor warning. */ | |
7193 | #ifdef DrawText | |
7194 | #undef DrawText | |
7195 | #endif | |
4ef0d4d0 KS |
7196 | /* avoid conflict with QuickdrawText.h */ |
7197 | #define DrawText gif_DrawText | |
7198 | #include <gif_lib.h> | |
7199 | #undef DrawText | |
7200 | ||
567f95ec EZ |
7201 | /* Giflib before 5.0 didn't define these macros (used only if HAVE_NTGUI). */ |
7202 | #ifndef GIFLIB_MINOR | |
7203 | #define GIFLIB_MINOR 0 | |
7204 | #endif | |
7205 | #ifndef GIFLIB_RELEASE | |
7206 | #define GIFLIB_RELEASE 0 | |
7207 | #endif | |
7208 | ||
9e2a2647 | 7209 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7210 | |
7211 | #include <gif_lib.h> | |
7212 | ||
9e2a2647 | 7213 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 | 7214 | |
567f95ec EZ |
7215 | /* Giflib before 5.0 didn't define these macros. */ |
7216 | #ifndef GIFLIB_MAJOR | |
7217 | #define GIFLIB_MAJOR 4 | |
7218 | #endif | |
7219 | ||
0fda9b75 | 7220 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
7221 | |
7222 | /* GIF library details. */ | |
b86b15b2 EZ |
7223 | #if 5 < GIFLIB_MAJOR + (1 <= GIFLIB_MINOR) |
7224 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *, int *)); | |
7225 | #else | |
14beddf4 | 7226 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
b86b15b2 | 7227 | #endif |
14beddf4 | 7228 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); |
f3606ef7 | 7229 | #if GIFLIB_MAJOR < 5 |
14beddf4 CY |
7230 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); |
7231 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
f3606ef7 BF |
7232 | #else |
7233 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc, int *)); | |
7234 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *, int *)); | |
a5dab159 | 7235 | DEF_IMGLIB_FN (char *, GifErrorString, (int)); |
f3606ef7 | 7236 | #endif |
4ef0d4d0 | 7237 | |
578098f3 | 7238 | static bool |
d07ff9db | 7239 | init_gif_functions (void) |
4ef0d4d0 KS |
7240 | { |
7241 | HMODULE library; | |
7242 | ||
d07ff9db | 7243 | if (!(library = w32_delayed_load (Qgif))) |
4ef0d4d0 KS |
7244 | return 0; |
7245 | ||
7246 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7247 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7248 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7249 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
a5dab159 EZ |
7250 | #if GIFLIB_MAJOR >= 5 |
7251 | LOAD_IMGLIB_FN (library, GifErrorString); | |
7252 | #endif | |
4ef0d4d0 KS |
7253 | return 1; |
7254 | } | |
7255 | ||
7256 | #else | |
7257 | ||
7258 | #define fn_DGifCloseFile DGifCloseFile | |
7259 | #define fn_DGifSlurp DGifSlurp | |
7260 | #define fn_DGifOpen DGifOpen | |
7261 | #define fn_DGifOpenFileName DGifOpenFileName | |
99149625 PE |
7262 | #if 5 <= GIFLIB_MAJOR |
7263 | # define fn_GifErrorString GifErrorString | |
7264 | #endif | |
4ef0d4d0 | 7265 | |
0fda9b75 | 7266 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
7267 | |
7268 | /* Reading a GIF image from memory | |
7269 | Based on the PNG memory stuff to a certain extent. */ | |
7270 | ||
7271 | typedef struct | |
7272 | { | |
7273 | unsigned char *bytes; | |
3f791afe PE |
7274 | ptrdiff_t len; |
7275 | ptrdiff_t index; | |
4ef0d4d0 KS |
7276 | } |
7277 | gif_memory_source; | |
7278 | ||
7279 | /* Make the current memory source available to gif_read_from_memory. | |
7280 | It's done this way because not all versions of libungif support | |
7281 | a UserData field in the GifFileType structure. */ | |
7282 | static gif_memory_source *current_gif_memory_src; | |
7283 | ||
7284 | static int | |
d3da34e0 | 7285 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7286 | { |
7287 | gif_memory_source *src = current_gif_memory_src; | |
7288 | ||
7289 | if (len > src->len - src->index) | |
7290 | return -1; | |
7291 | ||
72af86bd | 7292 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7293 | src->index += len; |
7294 | return len; | |
7295 | } | |
7296 | ||
b86b15b2 EZ |
7297 | static int |
7298 | gif_close (GifFileType *gif, int *err) | |
7299 | { | |
7300 | int retval; | |
7301 | ||
7302 | #if 5 < GIFLIB_MAJOR + (1 <= GIFLIB_MINOR) | |
7303 | retval = fn_DGifCloseFile (gif, err); | |
7304 | #else | |
7305 | retval = fn_DGifCloseFile (gif); | |
4335f421 | 7306 | #if GIFLIB_MAJOR >= 5 |
b86b15b2 EZ |
7307 | if (err) |
7308 | *err = gif->Error; | |
7309 | #endif | |
4335f421 | 7310 | #endif |
e776a630 | 7311 | return retval; |
b86b15b2 | 7312 | } |
4ef0d4d0 | 7313 | |
578098f3 | 7314 | /* Load GIF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
7315 | successful. */ |
7316 | ||
91433552 DN |
7317 | static const int interlace_start[] = {0, 4, 2, 1}; |
7318 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7319 | |
17c0c952 JD |
7320 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7321 | ||
578098f3 | 7322 | static bool |
d3da34e0 | 7323 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 | 7324 | { |
60002bf5 CY |
7325 | Lisp_Object file; |
7326 | int rc, width, height, x, y, i, j; | |
4ef0d4d0 KS |
7327 | XImagePtr ximg; |
7328 | ColorMapObject *gif_color_map; | |
7329 | unsigned long pixel_colors[256]; | |
7330 | GifFileType *gif; | |
4ef0d4d0 | 7331 | gif_memory_source memsrc; |
60002bf5 CY |
7332 | Lisp_Object specified_bg = image_spec_value (img->spec, QCbackground, NULL); |
7333 | Lisp_Object specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7334 | Lisp_Object specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7335 | unsigned long bgcolor = 0; | |
13464394 | 7336 | EMACS_INT idx; |
a5dab159 | 7337 | int gif_err; |
4ef0d4d0 KS |
7338 | |
7339 | if (NILP (specified_data)) | |
7340 | { | |
7341 | file = x_find_image_file (specified_file); | |
7342 | if (!STRINGP (file)) | |
7343 | { | |
7344 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7345 | return 0; |
7346 | } | |
9ab69568 EZ |
7347 | #ifdef WINDOWSNT |
7348 | file = ansi_encode_filename (file); | |
7349 | #endif | |
4ef0d4d0 | 7350 | |
df61c790 | 7351 | /* Open the GIF file. */ |
f3606ef7 | 7352 | #if GIFLIB_MAJOR < 5 |
2037898d | 7353 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7354 | if (gif == NULL) |
7355 | { | |
7356 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7357 | return 0; |
7358 | } | |
a5dab159 EZ |
7359 | #else |
7360 | gif = fn_DGifOpenFileName (SSDATA (file), &gif_err); | |
7361 | if (gif == NULL) | |
7362 | { | |
7363 | image_error ("Cannot open `%s': %s", | |
7364 | file, build_string (fn_GifErrorString (gif_err))); | |
7365 | return 0; | |
7366 | } | |
7367 | #endif | |
4ef0d4d0 KS |
7368 | } |
7369 | else | |
7370 | { | |
7574650a AS |
7371 | if (!STRINGP (specified_data)) |
7372 | { | |
7373 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7374 | return 0; | |
7375 | } | |
7376 | ||
4ef0d4d0 KS |
7377 | /* Read from memory! */ |
7378 | current_gif_memory_src = &memsrc; | |
7379 | memsrc.bytes = SDATA (specified_data); | |
7380 | memsrc.len = SBYTES (specified_data); | |
7381 | memsrc.index = 0; | |
7382 | ||
f3606ef7 | 7383 | #if GIFLIB_MAJOR < 5 |
df61c790 | 7384 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7385 | if (!gif) |
7386 | { | |
7387 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7388 | return 0; |
7389 | } | |
a5dab159 EZ |
7390 | #else |
7391 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory, &gif_err); | |
7392 | if (!gif) | |
7393 | { | |
7394 | image_error ("Cannot open memory source `%s': %s", | |
7395 | img->spec, build_string (fn_GifErrorString (gif_err))); | |
7396 | return 0; | |
7397 | } | |
7398 | #endif | |
4ef0d4d0 KS |
7399 | } |
7400 | ||
f1f25b99 CY |
7401 | /* Before reading entire contents, check the declared image size. */ |
7402 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7403 | { | |
10ea2b82 | 7404 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b86b15b2 | 7405 | gif_close (gif, NULL); |
f1f25b99 CY |
7406 | return 0; |
7407 | } | |
7408 | ||
4ef0d4d0 KS |
7409 | /* Read entire contents. */ |
7410 | rc = fn_DGifSlurp (gif); | |
60002bf5 | 7411 | if (rc == GIF_ERROR || gif->ImageCount <= 0) |
4ef0d4d0 KS |
7412 | { |
7413 | image_error ("Error reading `%s'", img->spec, Qnil); | |
b86b15b2 | 7414 | gif_close (gif, NULL); |
4ef0d4d0 KS |
7415 | return 0; |
7416 | } | |
7417 | ||
60002bf5 CY |
7418 | /* Which sub-image are we to display? */ |
7419 | { | |
33290528 PE |
7420 | Lisp_Object image_number = image_spec_value (img->spec, QCindex, NULL); |
7421 | idx = INTEGERP (image_number) ? XFASTINT (image_number) : 0; | |
60002bf5 | 7422 | if (idx < 0 || idx >= gif->ImageCount) |
17c0c952 | 7423 | { |
60002bf5 | 7424 | image_error ("Invalid image number `%s' in image `%s'", |
33290528 | 7425 | image_number, img->spec); |
b86b15b2 | 7426 | gif_close (gif, NULL); |
60002bf5 | 7427 | return 0; |
17c0c952 | 7428 | } |
60002bf5 | 7429 | } |
17c0c952 | 7430 | |
e013fb34 CY |
7431 | width = img->width = gif->SWidth; |
7432 | height = img->height = gif->SHeight; | |
0f4aca46 | 7433 | |
e013fb34 CY |
7434 | img->corners[TOP_CORNER] = gif->SavedImages[0].ImageDesc.Top; |
7435 | img->corners[LEFT_CORNER] = gif->SavedImages[0].ImageDesc.Left; | |
8d903f4e AS |
7436 | img->corners[BOT_CORNER] |
7437 | = img->corners[TOP_CORNER] + gif->SavedImages[0].ImageDesc.Height; | |
7438 | img->corners[RIGHT_CORNER] | |
7439 | = img->corners[LEFT_CORNER] + gif->SavedImages[0].ImageDesc.Width; | |
4ef0d4d0 | 7440 | |
f1f25b99 CY |
7441 | if (!check_image_size (f, width, height)) |
7442 | { | |
10ea2b82 | 7443 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b86b15b2 | 7444 | gif_close (gif, NULL); |
f1f25b99 CY |
7445 | return 0; |
7446 | } | |
7447 | ||
44aa9ee6 PE |
7448 | /* Check that the selected subimages fit. It's not clear whether |
7449 | the GIF spec requires this, but Emacs can crash if they don't fit. */ | |
7450 | for (j = 0; j <= idx; ++j) | |
7451 | { | |
7452 | struct SavedImage *subimage = gif->SavedImages + j; | |
7453 | int subimg_width = subimage->ImageDesc.Width; | |
7454 | int subimg_height = subimage->ImageDesc.Height; | |
7455 | int subimg_top = subimage->ImageDesc.Top; | |
7456 | int subimg_left = subimage->ImageDesc.Left; | |
7457 | if (! (0 <= subimg_width && 0 <= subimg_height | |
7458 | && 0 <= subimg_top && subimg_top <= height - subimg_height | |
7459 | && 0 <= subimg_left && subimg_left <= width - subimg_width)) | |
7460 | { | |
7461 | image_error ("Subimage does not fit in image", Qnil, Qnil); | |
b86b15b2 | 7462 | gif_close (gif, NULL); |
44aa9ee6 PE |
7463 | return 0; |
7464 | } | |
7465 | } | |
7466 | ||
4ef0d4d0 | 7467 | /* Create the X image and pixmap. */ |
547c9269 | 7468 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0)) |
4ef0d4d0 | 7469 | { |
b86b15b2 | 7470 | gif_close (gif, NULL); |
4ef0d4d0 KS |
7471 | return 0; |
7472 | } | |
7473 | ||
60002bf5 CY |
7474 | /* Clear the part of the screen image not covered by the image. |
7475 | Full animated GIF support requires more here (see the gif89 spec, | |
7476 | disposal methods). Let's simply assume that the part not covered | |
7477 | by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7478 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7479 | for (x = 0; x < width; ++x) |
7480 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7481 | ||
6ac3c7bb | 7482 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7483 | for (x = 0; x < width; ++x) |
7484 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7485 | ||
6ac3c7bb | 7486 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7487 | { |
6ac3c7bb | 7488 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7489 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7490 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7491 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7492 | } | |
7493 | ||
60002bf5 | 7494 | /* Read the GIF image into the X image. */ |
4ef0d4d0 | 7495 | |
60002bf5 CY |
7496 | /* FIXME: With the current implementation, loading an animated gif |
7497 | is quadratic in the number of animation frames, since each frame | |
7498 | is a separate struct image. We must provide a way for a single | |
7499 | gif_load call to construct and save all animation frames. */ | |
4ef0d4d0 | 7500 | |
60002bf5 CY |
7501 | init_color_table (); |
7502 | if (STRINGP (specified_bg)) | |
7503 | bgcolor = x_alloc_image_color (f, img, specified_bg, | |
7504 | FRAME_BACKGROUND_PIXEL (f)); | |
7505 | for (j = 0; j <= idx; ++j) | |
7506 | { | |
7507 | /* We use a local variable `raster' here because RasterBits is a | |
7508 | char *, which invites problems with bytes >= 0x80. */ | |
7509 | struct SavedImage *subimage = gif->SavedImages + j; | |
7510 | unsigned char *raster = (unsigned char *) subimage->RasterBits; | |
7511 | int transparency_color_index = -1; | |
7512 | int disposal = 0; | |
e013fb34 CY |
7513 | int subimg_width = subimage->ImageDesc.Width; |
7514 | int subimg_height = subimage->ImageDesc.Height; | |
7515 | int subimg_top = subimage->ImageDesc.Top; | |
7516 | int subimg_left = subimage->ImageDesc.Left; | |
60002bf5 CY |
7517 | |
7518 | /* Find the Graphic Control Extension block for this sub-image. | |
7519 | Extract the disposal method and transparency color. */ | |
7520 | for (i = 0; i < subimage->ExtensionBlockCount; i++) | |
4ef0d4d0 | 7521 | { |
60002bf5 | 7522 | ExtensionBlock *extblock = subimage->ExtensionBlocks + i; |
4ef0d4d0 | 7523 | |
60002bf5 CY |
7524 | if ((extblock->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION) |
7525 | && extblock->ByteCount == 4 | |
7526 | && extblock->Bytes[0] & 1) | |
4ef0d4d0 | 7527 | { |
60002bf5 CY |
7528 | /* From gif89a spec: 1 = "keep in place", 2 = "restore |
7529 | to background". Treat any other value like 2. */ | |
7530 | disposal = (extblock->Bytes[0] >> 2) & 7; | |
2547adb1 | 7531 | transparency_color_index = (unsigned char) extblock->Bytes[3]; |
60002bf5 | 7532 | break; |
4ef0d4d0 | 7533 | } |
4ef0d4d0 | 7534 | } |
60002bf5 CY |
7535 | |
7536 | /* We can't "keep in place" the first subimage. */ | |
7537 | if (j == 0) | |
7538 | disposal = 2; | |
7539 | ||
e013fb34 CY |
7540 | /* For disposal == 0, the spec says "No disposal specified. The |
7541 | decoder is not required to take any action." In practice, it | |
7542 | seems we need to treat this like "keep in place", see e.g. | |
7543 | http://upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif */ | |
7544 | if (disposal == 0) | |
7545 | disposal = 1; | |
7546 | ||
60002bf5 CY |
7547 | /* Allocate subimage colors. */ |
7548 | memset (pixel_colors, 0, sizeof pixel_colors); | |
7549 | gif_color_map = subimage->ImageDesc.ColorMap; | |
7550 | if (!gif_color_map) | |
7551 | gif_color_map = gif->SColorMap; | |
7552 | ||
7553 | if (gif_color_map) | |
7554 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
4ef0d4d0 | 7555 | { |
60002bf5 CY |
7556 | if (transparency_color_index == i) |
7557 | pixel_colors[i] = STRINGP (specified_bg) | |
7558 | ? bgcolor : FRAME_BACKGROUND_PIXEL (f); | |
7559 | else | |
7560 | { | |
7561 | int r = gif_color_map->Colors[i].Red << 8; | |
7562 | int g = gif_color_map->Colors[i].Green << 8; | |
7563 | int b = gif_color_map->Colors[i].Blue << 8; | |
7564 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7565 | } | |
4ef0d4d0 | 7566 | } |
60002bf5 CY |
7567 | |
7568 | /* Apply the pixel values. */ | |
be316ede | 7569 | if (GIFLIB_MAJOR < 5 && gif->SavedImages[j].ImageDesc.Interlace) |
60002bf5 CY |
7570 | { |
7571 | int row, pass; | |
7572 | ||
7573 | for (y = 0, row = interlace_start[0], pass = 0; | |
e013fb34 | 7574 | y < subimg_height; |
60002bf5 CY |
7575 | y++, row += interlace_increment[pass]) |
7576 | { | |
a9ebfa0b | 7577 | while (subimg_height <= row) |
b9ff995e | 7578 | row = interlace_start[++pass]; |
60002bf5 | 7579 | |
e013fb34 | 7580 | for (x = 0; x < subimg_width; x++) |
60002bf5 | 7581 | { |
e013fb34 | 7582 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7583 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7584 | XPutPixel (ximg, x + subimg_left, row + subimg_top, |
7585 | pixel_colors[c]); | |
60002bf5 CY |
7586 | } |
7587 | } | |
7588 | } | |
7589 | else | |
7590 | { | |
e013fb34 CY |
7591 | for (y = 0; y < subimg_height; ++y) |
7592 | for (x = 0; x < subimg_width; ++x) | |
60002bf5 | 7593 | { |
e013fb34 | 7594 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7595 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7596 | XPutPixel (ximg, x + subimg_left, y + subimg_top, |
7597 | pixel_colors[c]); | |
60002bf5 CY |
7598 | } |
7599 | } | |
4ef0d4d0 KS |
7600 | } |
7601 | ||
60002bf5 CY |
7602 | #ifdef COLOR_TABLE_SUPPORT |
7603 | img->colors = colors_in_color_table (&img->ncolors); | |
7604 | free_color_table (); | |
7605 | #endif /* COLOR_TABLE_SUPPORT */ | |
7606 | ||
1546c559 JL |
7607 | /* Save GIF image extension data for `image-metadata'. |
7608 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
b50691aa | 7609 | img->lisp_data = Qnil; |
60002bf5 | 7610 | if (gif->SavedImages[idx].ExtensionBlockCount > 0) |
6ac3c7bb | 7611 | { |
13464394 | 7612 | int delay = 0; |
60002bf5 CY |
7613 | ExtensionBlock *ext = gif->SavedImages[idx].ExtensionBlocks; |
7614 | for (i = 0; i < gif->SavedImages[idx].ExtensionBlockCount; i++, ext++) | |
6ac3c7bb | 7615 | /* Append (... FUNCTION "BYTES") */ |
1100a63c CY |
7616 | { |
7617 | img->lisp_data | |
7618 | = Fcons (make_number (ext->Function), | |
7619 | Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7620 | img->lisp_data)); | |
7621 | if (ext->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION | |
7622 | && ext->ByteCount == 4) | |
7623 | { | |
7624 | delay = ext->Bytes[2] << CHAR_BIT; | |
7625 | delay |= ext->Bytes[1]; | |
7626 | } | |
7627 | } | |
6c6f1994 | 7628 | img->lisp_data = list2 (Qextension_data, img->lisp_data); |
1100a63c CY |
7629 | if (delay) |
7630 | img->lisp_data | |
7631 | = Fcons (Qdelay, | |
13464394 | 7632 | Fcons (make_float (delay / 100.0), |
1100a63c | 7633 | img->lisp_data)); |
6ac3c7bb | 7634 | } |
1100a63c | 7635 | |
6ac3c7bb | 7636 | if (gif->ImageCount > 1) |
b50691aa CY |
7637 | img->lisp_data = Fcons (Qcount, |
7638 | Fcons (make_number (gif->ImageCount), | |
7639 | img->lisp_data)); | |
6ac3c7bb | 7640 | |
b86b15b2 EZ |
7641 | if (gif_close (gif, &gif_err) == GIF_ERROR) |
7642 | { | |
7643 | #if 5 <= GIFLIB_MAJOR | |
7644 | char *error_text = fn_GifErrorString (gif_err); | |
7645 | ||
7646 | if (error_text) | |
7647 | image_error ("Error closing `%s': %s", | |
7648 | img->spec, build_string (error_text)); | |
7649 | #else | |
aeb9f6c1 | 7650 | image_error ("Error closing `%s'", img->spec, Qnil); |
b86b15b2 EZ |
7651 | #endif |
7652 | } | |
4ef0d4d0 KS |
7653 | |
7654 | /* Maybe fill in the background field while we have ximg handy. */ | |
7655 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7656 | /* Casting avoids a GCC warning. */ |
7657 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 | 7658 | |
547c9269 YM |
7659 | /* Put ximg into the image. */ |
7660 | image_put_x_image (f, img, ximg, 0); | |
4ef0d4d0 | 7661 | |
4ef0d4d0 KS |
7662 | return 1; |
7663 | } | |
7664 | ||
2e09fef1 | 7665 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7666 | |
edfda783 | 7667 | #ifdef HAVE_NS |
578098f3 | 7668 | static bool |
edfda783 AR |
7669 | gif_load (struct frame *f, struct image *img) |
7670 | { | |
ed3751c8 JB |
7671 | return ns_load_image (f, img, |
7672 | image_spec_value (img->spec, QCfile, NULL), | |
7673 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7674 | } |
7675 | #endif /* HAVE_NS */ | |
7676 | ||
4ef0d4d0 KS |
7677 | #endif /* HAVE_GIF */ |
7678 | ||
7679 | ||
b9ed53d5 PE |
7680 | #ifdef HAVE_IMAGEMAGICK |
7681 | ||
7682 | /*********************************************************************** | |
7683 | ImageMagick | |
7684 | ***********************************************************************/ | |
7685 | ||
7686 | /* Scale an image size by returning SIZE / DIVISOR * MULTIPLIER, | |
7687 | safely rounded and clipped to int range. */ | |
7688 | ||
7689 | static int | |
7690 | scale_image_size (int size, size_t divisor, size_t multiplier) | |
7691 | { | |
7692 | if (divisor != 0) | |
7693 | { | |
7694 | double s = size; | |
7695 | double scaled = s * multiplier / divisor + 0.5; | |
7696 | if (scaled < INT_MAX) | |
7697 | return scaled; | |
7698 | } | |
7699 | return INT_MAX; | |
7700 | } | |
7701 | ||
7702 | /* Compute the desired size of an image with native size WIDTH x HEIGHT. | |
7703 | Use SPEC to deduce the size. Store the desired size into | |
7704 | *D_WIDTH x *D_HEIGHT. Store -1 x -1 if the native size is OK. */ | |
f3f9606c LMI |
7705 | static void |
7706 | compute_image_size (size_t width, size_t height, | |
7707 | Lisp_Object spec, | |
7708 | int *d_width, int *d_height) | |
7709 | { | |
7710 | Lisp_Object value; | |
7711 | int desired_width, desired_height; | |
7712 | ||
7713 | /* If width and/or height is set in the display spec assume we want | |
7714 | to scale to those values. If either h or w is unspecified, the | |
7715 | unspecified should be calculated from the specified to preserve | |
7716 | aspect ratio. */ | |
7717 | value = image_spec_value (spec, QCwidth, NULL); | |
b9ed53d5 | 7718 | desired_width = NATNUMP (value) ? min (XFASTINT (value), INT_MAX) : -1; |
f3f9606c | 7719 | value = image_spec_value (spec, QCheight, NULL); |
b9ed53d5 | 7720 | desired_height = NATNUMP (value) ? min (XFASTINT (value), INT_MAX) : -1; |
f3f9606c LMI |
7721 | |
7722 | if (desired_width == -1) | |
7723 | { | |
7724 | value = image_spec_value (spec, QCmax_width, NULL); | |
b9ed53d5 | 7725 | if (NATNUMP (value)) |
f3f9606c | 7726 | { |
b9ed53d5 PE |
7727 | int max_width = min (XFASTINT (value), INT_MAX); |
7728 | if (max_width < width) | |
f3f9606c | 7729 | { |
b9ed53d5 PE |
7730 | /* The image is wider than :max-width. */ |
7731 | desired_width = max_width; | |
7732 | if (desired_height == -1) | |
f3f9606c | 7733 | { |
b9ed53d5 PE |
7734 | desired_height = scale_image_size (desired_width, |
7735 | width, height); | |
7736 | value = image_spec_value (spec, QCmax_height, NULL); | |
7737 | if (NATNUMP (value)) | |
f3f9606c | 7738 | { |
b9ed53d5 PE |
7739 | int max_height = min (XFASTINT (value), INT_MAX); |
7740 | if (max_height < desired_height) | |
7741 | { | |
7742 | desired_height = max_height; | |
7743 | desired_width = scale_image_size (desired_height, | |
7744 | height, width); | |
7745 | } | |
f3f9606c LMI |
7746 | } |
7747 | } | |
f3f9606c LMI |
7748 | } |
7749 | } | |
7750 | } | |
7751 | ||
7752 | if (desired_height == -1) | |
7753 | { | |
7754 | value = image_spec_value (spec, QCmax_height, NULL); | |
b9ed53d5 PE |
7755 | if (NATNUMP (value)) |
7756 | { | |
7757 | int max_height = min (XFASTINT (value), INT_MAX); | |
7758 | if (max_height < height) | |
7759 | desired_height = max_height; | |
7760 | } | |
f3f9606c LMI |
7761 | } |
7762 | ||
7763 | if (desired_width != -1 && desired_height == -1) | |
7764 | /* w known, calculate h. */ | |
b9ed53d5 | 7765 | desired_height = scale_image_size (desired_width, width, height); |
f3f9606c LMI |
7766 | |
7767 | if (desired_width == -1 && desired_height != -1) | |
7768 | /* h known, calculate w. */ | |
b9ed53d5 | 7769 | desired_width = scale_image_size (desired_height, height, width); |
f3f9606c LMI |
7770 | |
7771 | *d_width = desired_width; | |
7772 | *d_height = desired_height; | |
7773 | } | |
7774 | ||
4b66faf3 | 7775 | static Lisp_Object Qimagemagick; |
a32d4040 | 7776 | |
578098f3 PE |
7777 | static bool imagemagick_image_p (Lisp_Object); |
7778 | static bool imagemagick_load (struct frame *, struct image *); | |
d66c4c7c CY |
7779 | static void imagemagick_clear_image (struct frame *, struct image *); |
7780 | ||
a32d4040 | 7781 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7782 | |
7783 | enum imagemagick_keyword_index | |
4917006b JV |
7784 | { |
7785 | IMAGEMAGICK_TYPE, | |
7786 | IMAGEMAGICK_DATA, | |
7787 | IMAGEMAGICK_FILE, | |
7788 | IMAGEMAGICK_ASCENT, | |
7789 | IMAGEMAGICK_MARGIN, | |
7790 | IMAGEMAGICK_RELIEF, | |
7791 | IMAGEMAGICK_ALGORITHM, | |
7792 | IMAGEMAGICK_HEURISTIC_MASK, | |
7793 | IMAGEMAGICK_MASK, | |
7794 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7795 | IMAGEMAGICK_HEIGHT, |
7796 | IMAGEMAGICK_WIDTH, | |
f3f9606c LMI |
7797 | IMAGEMAGICK_MAX_HEIGHT, |
7798 | IMAGEMAGICK_MAX_WIDTH, | |
c6b7ccaa | 7799 | IMAGEMAGICK_FORMAT, |
c7f514b5 JV |
7800 | IMAGEMAGICK_ROTATION, |
7801 | IMAGEMAGICK_CROP, | |
4917006b JV |
7802 | IMAGEMAGICK_LAST |
7803 | }; | |
3de25479 JV |
7804 | |
7805 | /* Vector of image_keyword structures describing the format | |
7806 | of valid user-defined image specifications. */ | |
7807 | ||
7808 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7809 | { |
7810 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7811 | {":data", IMAGE_STRING_VALUE, 0}, | |
7812 | {":file", IMAGE_STRING_VALUE, 0}, | |
7813 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7814 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4917006b JV |
7815 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7816 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7817 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7818 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7819 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7820 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7821 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
f3f9606c LMI |
7822 | {":max-height", IMAGE_INTEGER_VALUE, 0}, |
7823 | {":max-width", IMAGE_INTEGER_VALUE, 0}, | |
c6b7ccaa | 7824 | {":format", IMAGE_SYMBOL_VALUE, 0}, |
7574650a | 7825 | {":rotation", IMAGE_NUMBER_VALUE, 0}, |
c7f514b5 | 7826 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7827 | }; |
a32d4040 | 7828 | |
33d4113c | 7829 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 7830 | static bool init_imagemagick_functions (void); |
bb4d86b4 CY |
7831 | #else |
7832 | #define init_imagemagick_functions NULL | |
7833 | #endif | |
7834 | ||
d66c4c7c CY |
7835 | /* Structure describing the image type for any image handled via |
7836 | ImageMagick. */ | |
7837 | ||
7838 | static struct image_type imagemagick_type = | |
7839 | { | |
7840 | &Qimagemagick, | |
7841 | imagemagick_image_p, | |
7842 | imagemagick_load, | |
7843 | imagemagick_clear_image, | |
bb4d86b4 | 7844 | init_imagemagick_functions, |
d66c4c7c CY |
7845 | NULL |
7846 | }; | |
7847 | ||
3de25479 JV |
7848 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7849 | ||
7850 | static void | |
4917006b JV |
7851 | imagemagick_clear_image (struct frame *f, |
7852 | struct image *img) | |
3de25479 | 7853 | { |
3de25479 JV |
7854 | x_clear_image (f, img); |
7855 | } | |
7856 | ||
578098f3 | 7857 | /* Return true if OBJECT is a valid IMAGEMAGICK image specification. Do |
3de25479 JV |
7858 | this by calling parse_image_spec and supplying the keywords that |
7859 | identify the IMAGEMAGICK format. */ | |
7860 | ||
578098f3 | 7861 | static bool |
4917006b | 7862 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7863 | { |
7864 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7865 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7866 | |
7867 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7868 | return 0; | |
7869 | ||
7870 | /* Must specify either the :data or :file keyword. */ | |
7871 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7872 | } | |
7873 | ||
7874 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
c7015153 | 7875 | Therefore rename the function so it doesn't collide with ImageMagick. */ |
3de25479 JV |
7876 | #define DrawRectangle DrawRectangleGif |
7877 | #include <wand/MagickWand.h> | |
7878 | ||
60737f02 PE |
7879 | /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason. |
7880 | Emacs seems to work fine with the hidden version, so unhide it. */ | |
7881 | #include <magick/version.h> | |
7882 | #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665 | |
7883 | extern WandExport void PixelGetMagickColor (const PixelWand *, | |
7884 | MagickPixelPacket *); | |
7885 | #endif | |
7886 | ||
d1d7b339 JL |
7887 | /* Log ImageMagick error message. |
7888 | Useful when a ImageMagick function returns the status `MagickFalse'. */ | |
7889 | ||
7890 | static void | |
7891 | imagemagick_error (MagickWand *wand) | |
7892 | { | |
7893 | char *description; | |
7894 | ExceptionType severity; | |
7895 | ||
7896 | description = MagickGetException (wand, &severity); | |
7897 | image_error ("ImageMagick error: %s", | |
1130ecfc | 7898 | build_string (description), |
d1d7b339 | 7899 | Qnil); |
ed44be70 | 7900 | MagickRelinquishMemory (description); |
d1d7b339 JL |
7901 | } |
7902 | ||
8259030d | 7903 | /* Possibly give ImageMagick some extra help to determine the image |
01c3051f | 7904 | type by supplying a "dummy" filename based on the Content-Type. */ |
8259030d | 7905 | |
01c3051f PE |
7906 | static char * |
7907 | imagemagick_filename_hint (Lisp_Object spec, char hint_buffer[MaxTextExtent]) | |
8259030d | 7908 | { |
01c3051f PE |
7909 | Lisp_Object symbol = intern ("image-format-suffixes"); |
7910 | Lisp_Object val = find_symbol_value (symbol); | |
7911 | Lisp_Object format; | |
8259030d | 7912 | |
66e7901a LMI |
7913 | if (! CONSP (val)) |
7914 | return NULL; | |
cfa1f436 | 7915 | |
01c3051f PE |
7916 | format = image_spec_value (spec, intern (":format"), NULL); |
7917 | val = Fcar_safe (Fcdr_safe (Fassq (format, val))); | |
66e7901a LMI |
7918 | if (! STRINGP (val)) |
7919 | return NULL; | |
7920 | ||
01c3051f PE |
7921 | /* It's OK to truncate the hint if it has MaxTextExtent or more bytes, |
7922 | as ImageMagick would ignore the extra bytes anyway. */ | |
7923 | snprintf (hint_buffer, MaxTextExtent, "/tmp/foo.%s", SSDATA (val)); | |
7924 | return hint_buffer; | |
8259030d LMI |
7925 | } |
7926 | ||
6e856b69 LMI |
7927 | /* Animated images (e.g., GIF89a) are composed from one "master image" |
7928 | (which is the first one, and then there's a number of images that | |
7929 | follow. If following images have non-transparent colors, these are | |
7930 | composed "on top" of the master image. So, in general, one has to | |
7931 | compute ann the preceding images to be able to display a particular | |
274ff63f | 7932 | sub-image. |
6e856b69 | 7933 | |
274ff63f LMI |
7934 | Computing all the preceding images is too slow, so we maintain a |
7935 | cache of previously computed images. We have to maintain a cache | |
7936 | separate from the image cache, because the images may be scaled | |
7937 | before display. */ | |
7938 | ||
7939 | struct animation_cache | |
7940 | { | |
274ff63f LMI |
7941 | MagickWand *wand; |
7942 | int index; | |
43aac990 | 7943 | struct timespec update_time; |
274ff63f | 7944 | struct animation_cache *next; |
8c2f38aa | 7945 | char signature[FLEXIBLE_ARRAY_MEMBER]; |
274ff63f LMI |
7946 | }; |
7947 | ||
7948 | static struct animation_cache *animation_cache = NULL; | |
7949 | ||
deb31e75 | 7950 | static struct animation_cache * |
274ff63f LMI |
7951 | imagemagick_create_cache (char *signature) |
7952 | { | |
8c2f38aa PE |
7953 | struct animation_cache *cache |
7954 | = xmalloc (offsetof (struct animation_cache, signature) | |
7955 | + strlen (signature) + 1); | |
d0139df5 PE |
7956 | cache->wand = 0; |
7957 | cache->index = 0; | |
7958 | cache->next = 0; | |
8c2f38aa | 7959 | strcpy (cache->signature, signature); |
274ff63f LMI |
7960 | return cache; |
7961 | } | |
7962 | ||
7963 | /* Discard cached images that haven't been used for a minute. */ | |
deb31e75 DA |
7964 | static void |
7965 | imagemagick_prune_animation_cache (void) | |
274ff63f | 7966 | { |
d0139df5 | 7967 | struct animation_cache **pcache = &animation_cache; |
43aac990 PE |
7968 | struct timespec old = timespec_sub (current_timespec (), |
7969 | make_timespec (60, 0)); | |
274ff63f | 7970 | |
d0139df5 | 7971 | while (*pcache) |
274ff63f | 7972 | { |
d0139df5 | 7973 | struct animation_cache *cache = *pcache; |
43aac990 | 7974 | if (timespec_cmp (old, cache->update_time) <= 0) |
d0139df5 PE |
7975 | pcache = &cache->next; |
7976 | else | |
274ff63f | 7977 | { |
274ff63f LMI |
7978 | if (cache->wand) |
7979 | DestroyMagickWand (cache->wand); | |
d0139df5 PE |
7980 | *pcache = cache->next; |
7981 | xfree (cache); | |
8a6f875f | 7982 | } |
274ff63f LMI |
7983 | } |
7984 | } | |
7985 | ||
deb31e75 | 7986 | static struct animation_cache * |
274ff63f LMI |
7987 | imagemagick_get_animation_cache (MagickWand *wand) |
7988 | { | |
d0139df5 | 7989 | char *signature = MagickGetImageSignature (wand); |
319a4d03 | 7990 | struct animation_cache *cache; |
bb566cea | 7991 | struct animation_cache **pcache = &animation_cache; |
274ff63f LMI |
7992 | |
7993 | imagemagick_prune_animation_cache (); | |
7994 | ||
bb566cea | 7995 | while (1) |
274ff63f | 7996 | { |
bb566cea PE |
7997 | cache = *pcache; |
7998 | if (! cache) | |
7999 | { | |
8000 | *pcache = cache = imagemagick_create_cache (signature); | |
8001 | break; | |
8002 | } | |
8c2f38aa | 8003 | if (strcmp (signature, cache->signature) == 0) |
bb566cea PE |
8004 | break; |
8005 | pcache = &cache->next; | |
274ff63f LMI |
8006 | } |
8007 | ||
453f4022 | 8008 | DestroyString (signature); |
43aac990 | 8009 | cache->update_time = current_timespec (); |
274ff63f LMI |
8010 | return cache; |
8011 | } | |
995be755 | 8012 | |
6e856b69 LMI |
8013 | static MagickWand * |
8014 | imagemagick_compute_animated_image (MagickWand *super_wand, int ino) | |
8015 | { | |
691a357f | 8016 | int i; |
6e856b69 | 8017 | MagickWand *composite_wand; |
703dbeba | 8018 | size_t dest_width, dest_height; |
274ff63f | 8019 | struct animation_cache *cache = imagemagick_get_animation_cache (super_wand); |
6e856b69 LMI |
8020 | |
8021 | MagickSetIteratorIndex (super_wand, 0); | |
6e856b69 | 8022 | |
274ff63f LMI |
8023 | if (ino == 0 || cache->wand == NULL || cache->index > ino) |
8024 | { | |
8025 | composite_wand = MagickGetImage (super_wand); | |
8026 | if (cache->wand) | |
8027 | DestroyMagickWand (cache->wand); | |
8028 | } | |
995be755 | 8029 | else |
274ff63f | 8030 | composite_wand = cache->wand; |
995be755 | 8031 | |
703dbeba LMI |
8032 | dest_width = MagickGetImageWidth (composite_wand); |
8033 | dest_height = MagickGetImageHeight (composite_wand); | |
8034 | ||
274ff63f | 8035 | for (i = max (1, cache->index + 1); i <= ino; i++) |
691a357f PE |
8036 | { |
8037 | MagickWand *sub_wand; | |
8038 | PixelIterator *source_iterator, *dest_iterator; | |
8039 | PixelWand **source, **dest; | |
703dbeba LMI |
8040 | size_t source_width, source_height; |
8041 | ssize_t source_left, source_top; | |
691a357f | 8042 | MagickPixelPacket pixel; |
a5b5f73f | 8043 | DisposeType dispose; |
79670014 | 8044 | ptrdiff_t lines = 0; |
6e856b69 | 8045 | |
691a357f PE |
8046 | MagickSetIteratorIndex (super_wand, i); |
8047 | sub_wand = MagickGetImage (super_wand); | |
6e856b69 | 8048 | |
703dbeba LMI |
8049 | MagickGetImagePage (sub_wand, &source_width, &source_height, |
8050 | &source_left, &source_top); | |
8051 | ||
0f8a6926 | 8052 | /* This flag says how to handle transparent pixels. */ |
a5b5f73f LMI |
8053 | dispose = MagickGetImageDispose (sub_wand); |
8054 | ||
691a357f PE |
8055 | source_iterator = NewPixelIterator (sub_wand); |
8056 | if (! source_iterator) | |
8057 | { | |
8058 | DestroyMagickWand (composite_wand); | |
8059 | DestroyMagickWand (sub_wand); | |
274ff63f | 8060 | cache->wand = NULL; |
691a357f PE |
8061 | image_error ("Imagemagick pixel iterator creation failed", |
8062 | Qnil, Qnil); | |
8063 | return NULL; | |
8064 | } | |
6e856b69 | 8065 | |
691a357f PE |
8066 | dest_iterator = NewPixelIterator (composite_wand); |
8067 | if (! dest_iterator) | |
8068 | { | |
8069 | DestroyMagickWand (composite_wand); | |
8070 | DestroyMagickWand (sub_wand); | |
8071 | DestroyPixelIterator (source_iterator); | |
274ff63f | 8072 | cache->wand = NULL; |
691a357f PE |
8073 | image_error ("Imagemagick pixel iterator creation failed", |
8074 | Qnil, Qnil); | |
8075 | return NULL; | |
8076 | } | |
6e856b69 | 8077 | |
526e5233 | 8078 | /* The sub-image may not start at origin, so move the destination |
703dbeba | 8079 | iterator to where the sub-image should start. */ |
1d18b1e6 | 8080 | if (source_top > 0) |
79670014 LMI |
8081 | { |
8082 | PixelSetIteratorRow (dest_iterator, source_top); | |
8083 | lines = source_top; | |
8084 | } | |
703dbeba | 8085 | |
691a357f PE |
8086 | while ((source = PixelGetNextIteratorRow (source_iterator, &source_width)) |
8087 | != NULL) | |
6e856b69 | 8088 | { |
691a357f | 8089 | ptrdiff_t x; |
79670014 LMI |
8090 | |
8091 | /* Sanity check. This shouldn't happen, but apparently | |
8092 | does in some pictures. */ | |
8093 | if (++lines >= dest_height) | |
8094 | break; | |
8095 | ||
691a357f PE |
8096 | dest = PixelGetNextIteratorRow (dest_iterator, &dest_width); |
8097 | for (x = 0; x < source_width; x++) | |
6e856b69 | 8098 | { |
703dbeba | 8099 | /* Sanity check. This shouldn't happen, but apparently |
79670014 | 8100 | also does in some pictures. */ |
5f9aee6f | 8101 | if (x + source_left > dest_width - 1) |
703dbeba | 8102 | break; |
6f94cbbc LMI |
8103 | /* Normally we only copy over non-transparent pixels, |
8104 | but if the disposal method is "Background", then we | |
8105 | copy over all pixels. */ | |
8106 | if (dispose == BackgroundDispose || | |
8107 | PixelGetAlpha (source[x])) | |
691a357f PE |
8108 | { |
8109 | PixelGetMagickColor (source[x], &pixel); | |
703dbeba | 8110 | PixelSetMagickColor (dest[x + source_left], &pixel); |
691a357f | 8111 | } |
6e856b69 | 8112 | } |
1eade943 | 8113 | PixelSyncIterator (dest_iterator); |
6e856b69 | 8114 | } |
6e856b69 | 8115 | |
691a357f PE |
8116 | DestroyPixelIterator (source_iterator); |
8117 | DestroyPixelIterator (dest_iterator); | |
8118 | DestroyMagickWand (sub_wand); | |
8119 | } | |
6e856b69 | 8120 | |
995be755 LMI |
8121 | /* Cache a copy for the next iteration. The current wand will be |
8122 | destroyed by the caller. */ | |
274ff63f LMI |
8123 | cache->wand = CloneMagickWand (composite_wand); |
8124 | cache->index = ino; | |
995be755 | 8125 | |
6e856b69 LMI |
8126 | return composite_wand; |
8127 | } | |
8128 | ||
8129 | ||
d66c4c7c CY |
8130 | /* Helper function for imagemagick_load, which does the actual loading |
8131 | given contents and size, apart from frame and image structures, | |
8132 | passed from imagemagick_load. Uses librimagemagick to do most of | |
8133 | the image processing. | |
3de25479 | 8134 | |
d66c4c7c CY |
8135 | F is a pointer to the Emacs frame; IMG to the image structure to |
8136 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
8137 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
8138 | either the file name or the image data. | |
3de25479 | 8139 | |
578098f3 | 8140 | Return true if successful. */ |
3de25479 | 8141 | |
578098f3 | 8142 | static bool |
d66c4c7c CY |
8143 | imagemagick_load_image (struct frame *f, struct image *img, |
8144 | unsigned char *contents, unsigned int size, | |
33290528 | 8145 | char *filename) |
3de25479 | 8146 | { |
1b9b4cf4 | 8147 | size_t width, height; |
d66c4c7c | 8148 | MagickBooleanType status; |
3de25479 | 8149 | XImagePtr ximg; |
1b9b4cf4 CY |
8150 | int x, y; |
8151 | MagickWand *image_wand; | |
3de25479 | 8152 | PixelIterator *iterator; |
1b9b4cf4 | 8153 | PixelWand **pixels, *bg_wand = NULL; |
3de25479 | 8154 | MagickPixelPacket pixel; |
4917006b | 8155 | Lisp_Object image; |
7574650a | 8156 | Lisp_Object value; |
33290528 | 8157 | Lisp_Object crop; |
13464394 | 8158 | EMACS_INT ino; |
4917006b JV |
8159 | int desired_width, desired_height; |
8160 | double rotation; | |
7574650a | 8161 | int pixelwidth; |
01c3051f | 8162 | char hint_buffer[MaxTextExtent]; |
8259030d | 8163 | char *filename_hint = NULL; |
7574650a | 8164 | |
a32d4040 CY |
8165 | /* Handle image index for image types who can contain more than one image. |
8166 | Interface :index is same as for GIF. First we "ping" the image to see how | |
8167 | many sub-images it contains. Pinging is faster than loading the image to | |
8168 | find out things about it. */ | |
f853f599 | 8169 | |
a32d4040 | 8170 | /* Initialize the imagemagick environment. */ |
f853f599 | 8171 | MagickWandGenesis (); |
3de25479 JV |
8172 | image = image_spec_value (img->spec, QCindex, NULL); |
8173 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
49ceb676 | 8174 | image_wand = NewMagickWand (); |
fa4fdb5c | 8175 | |
01c3051f | 8176 | if (filename) |
49ceb676 | 8177 | status = MagickReadImage (image_wand, filename); |
01c3051f PE |
8178 | else |
8179 | { | |
8180 | filename_hint = imagemagick_filename_hint (img->spec, hint_buffer); | |
49ceb676 LMI |
8181 | MagickSetFilename (image_wand, filename_hint); |
8182 | status = MagickReadImageBlob (image_wand, contents, size); | |
01c3051f | 8183 | } |
7574650a | 8184 | |
d1d7b339 JL |
8185 | if (status == MagickFalse) |
8186 | { | |
49ceb676 LMI |
8187 | imagemagick_error (image_wand); |
8188 | DestroyMagickWand (image_wand); | |
d1d7b339 JL |
8189 | return 0; |
8190 | } | |
fa4fdb5c | 8191 | |
49ceb676 | 8192 | if (ino < 0 || ino >= MagickGetNumberImages (image_wand)) |
7574650a AS |
8193 | { |
8194 | image_error ("Invalid image number `%s' in image `%s'", | |
8195 | image, img->spec); | |
49ceb676 | 8196 | DestroyMagickWand (image_wand); |
7574650a | 8197 | return 0; |
f3700365 | 8198 | } |
431dab04 | 8199 | |
49ceb676 | 8200 | if (MagickGetNumberImages (image_wand) > 1) |
b50691aa | 8201 | img->lisp_data = |
d2a2d277 | 8202 | Fcons (Qcount, |
49ceb676 | 8203 | Fcons (make_number (MagickGetNumberImages (image_wand)), |
b50691aa | 8204 | img->lisp_data)); |
f3700365 | 8205 | |
4ce82fb8 LMI |
8206 | /* If we have an animated image, get the new wand based on the |
8207 | "super-wand". */ | |
6e856b69 | 8208 | if (MagickGetNumberImages (image_wand) > 1) |
4ce82fb8 LMI |
8209 | { |
8210 | MagickWand *super_wand = image_wand; | |
6e856b69 LMI |
8211 | image_wand = imagemagick_compute_animated_image (super_wand, ino); |
8212 | if (! image_wand) | |
8213 | image_wand = super_wand; | |
8214 | else | |
8215 | DestroyMagickWand (super_wand); | |
4ce82fb8 LMI |
8216 | } |
8217 | ||
1b9b4cf4 CY |
8218 | /* Retrieve the frame's background color, for use later. */ |
8219 | { | |
8220 | XColor bgcolor; | |
8221 | Lisp_Object specified_bg; | |
8222 | ||
8223 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8224 | if (!STRINGP (specified_bg) | |
8225 | || !x_defined_color (f, SSDATA (specified_bg), &bgcolor, 0)) | |
f62bc934 | 8226 | x_query_frame_background_color (f, &bgcolor); |
1b9b4cf4 CY |
8227 | |
8228 | bg_wand = NewPixelWand (); | |
8229 | PixelSetRed (bg_wand, (double) bgcolor.red / 65535); | |
8230 | PixelSetGreen (bg_wand, (double) bgcolor.green / 65535); | |
8231 | PixelSetBlue (bg_wand, (double) bgcolor.blue / 65535); | |
8232 | } | |
8233 | ||
f3f9606c LMI |
8234 | compute_image_size (MagickGetImageWidth (image_wand), |
8235 | MagickGetImageHeight (image_wand), | |
8236 | img->spec, &desired_width, &desired_height); | |
bdf6a35d | 8237 | |
a32d4040 | 8238 | if (desired_width != -1 && desired_height != -1) |
4917006b | 8239 | { |
7574650a AS |
8240 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
8241 | if (status == MagickFalse) | |
8242 | { | |
8243 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
d1d7b339 | 8244 | imagemagick_error (image_wand); |
7574650a AS |
8245 | goto imagemagick_error; |
8246 | } | |
3de25479 | 8247 | } |
3de25479 | 8248 | |
f3700365 | 8249 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
8250 | efficient. */ |
8251 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
8252 | ||
13464394 | 8253 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 8254 | { |
a32d4040 CY |
8255 | /* After some testing, it seems MagickCropImage is the fastest crop |
8256 | function in ImageMagick. This crop function seems to do less copying | |
8257 | than the alternatives, but it still reads the entire image into memory | |
13464394 | 8258 | before cropping, which is apparently difficult to avoid when using |
a32d4040 | 8259 | imagemagick. */ |
13464394 | 8260 | size_t crop_width = XINT (XCAR (crop)); |
7574650a | 8261 | crop = XCDR (crop); |
13464394 | 8262 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 8263 | { |
13464394 | 8264 | size_t crop_height = XINT (XCAR (crop)); |
7574650a | 8265 | crop = XCDR (crop); |
13464394 | 8266 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 8267 | { |
13464394 | 8268 | ssize_t crop_x = XINT (XCAR (crop)); |
7574650a | 8269 | crop = XCDR (crop); |
13464394 | 8270 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 8271 | { |
13464394 PE |
8272 | ssize_t crop_y = XINT (XCAR (crop)); |
8273 | MagickCropImage (image_wand, crop_width, crop_height, | |
8274 | crop_x, crop_y); | |
7574650a AS |
8275 | } |
8276 | } | |
8277 | } | |
8278 | } | |
8279 | ||
d2a2d277 JV |
8280 | /* Furthermore :rotation. we need background color and angle for |
8281 | rotation. */ | |
3de25479 | 8282 | /* |
d2a2d277 JV |
8283 | TODO background handling for rotation specified_bg = |
8284 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 8285 | (specified_bg). */ |
4917006b JV |
8286 | value = image_spec_value (img->spec, QCrotation, NULL); |
8287 | if (FLOATP (value)) | |
8288 | { | |
3de25479 | 8289 | rotation = extract_float (value); |
1b9b4cf4 | 8290 | status = MagickRotateImage (image_wand, bg_wand, rotation); |
4917006b JV |
8291 | if (status == MagickFalse) |
8292 | { | |
8293 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
d1d7b339 | 8294 | imagemagick_error (image_wand); |
4917006b JV |
8295 | goto imagemagick_error; |
8296 | } | |
3de25479 | 8297 | } |
7574650a | 8298 | |
1b9b4cf4 CY |
8299 | /* Set the canvas background color to the frame or specified |
8300 | background, and flatten the image. Note: as of ImageMagick | |
8301 | 6.6.0, SVG image transparency is not handled properly | |
8302 | (e.g. etc/images/splash.svg shows a white background always). */ | |
8303 | { | |
8304 | MagickWand *new_wand; | |
8305 | MagickSetImageBackgroundColor (image_wand, bg_wand); | |
0e25d334 | 8306 | #ifdef HAVE_MAGICKMERGEIMAGELAYERS |
1b9b4cf4 | 8307 | new_wand = MagickMergeImageLayers (image_wand, MergeLayer); |
0e25d334 CY |
8308 | #else |
8309 | new_wand = MagickFlattenImages (image_wand); | |
8310 | #endif | |
1b9b4cf4 CY |
8311 | DestroyMagickWand (image_wand); |
8312 | image_wand = new_wand; | |
8313 | } | |
8314 | ||
84ac6f9d PE |
8315 | /* Finally we are done manipulating the image. Figure out the |
8316 | resulting width/height and transfer ownership to Emacs. */ | |
8317 | height = MagickGetImageHeight (image_wand); | |
8318 | width = MagickGetImageWidth (image_wand); | |
8319 | ||
3f791afe PE |
8320 | if (! (width <= INT_MAX && height <= INT_MAX |
8321 | && check_image_size (f, width, height))) | |
3de25479 JV |
8322 | { |
8323 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8324 | goto imagemagick_error; | |
8325 | } | |
7574650a | 8326 | |
3de25479 JV |
8327 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
8328 | went ok. */ | |
3de25479 JV |
8329 | |
8330 | init_color_table (); | |
af008560 | 8331 | |
cf7a0de6 | 8332 | #if defined (HAVE_MAGICKEXPORTIMAGEPIXELS) && ! defined (HAVE_NS) |
0e25d334 CY |
8333 | if (imagemagick_render_type != 0) |
8334 | { | |
8335 | /* Magicexportimage is normally faster than pixelpushing. This | |
8336 | method is also well tested. Some aspects of this method are | |
8337 | ad-hoc and needs to be more researched. */ | |
8338 | int imagedepth = 24; /*MagickGetImageDepth(image_wand);*/ | |
8339 | const char *exportdepth = imagedepth <= 8 ? "I" : "BGRP"; /*"RGBP";*/ | |
8340 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
547c9269 YM |
8341 | if (!image_create_x_image_and_pixmap (f, img, width, height, imagedepth, |
8342 | &ximg, 0)) | |
0e25d334 CY |
8343 | { |
8344 | #ifdef COLOR_TABLE_SUPPORT | |
8345 | free_color_table (); | |
8346 | #endif | |
8347 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); | |
8348 | goto imagemagick_error; | |
8349 | } | |
8350 | ||
8351 | /* Oddly, the below code doesn't seem to work:*/ | |
8352 | /* switch(ximg->bitmap_unit){ */ | |
8353 | /* case 8: */ | |
8354 | /* pixelwidth=CharPixel; */ | |
8355 | /* break; */ | |
8356 | /* case 16: */ | |
8357 | /* pixelwidth=ShortPixel; */ | |
8358 | /* break; */ | |
8359 | /* case 32: */ | |
8360 | /* pixelwidth=LongPixel; */ | |
8361 | /* break; */ | |
8362 | /* } */ | |
8363 | /* | |
8364 | Here im just guessing the format of the bitmap. | |
8365 | happens to work fine for: | |
8366 | - bw djvu images | |
8367 | on rgb display. | |
8368 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
8369 | */ | |
8370 | pixelwidth = CharPixel; /*??? TODO figure out*/ | |
8371 | MagickExportImagePixels (image_wand, 0, 0, width, height, | |
8372 | exportdepth, pixelwidth, ximg->data); | |
8373 | } | |
8374 | else | |
8375 | #endif /* HAVE_MAGICKEXPORTIMAGEPIXELS */ | |
4917006b | 8376 | { |
13464394 | 8377 | size_t image_height; |
c24163d4 | 8378 | MagickRealType color_scale = 65535.0 / QuantumRange; |
13464394 | 8379 | |
4917006b | 8380 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
547c9269 YM |
8381 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, |
8382 | &ximg, 0)) | |
4917006b | 8383 | { |
466cbae9 AS |
8384 | #ifdef COLOR_TABLE_SUPPORT |
8385 | free_color_table (); | |
8386 | #endif | |
5e617bc2 | 8387 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
4917006b JV |
8388 | goto imagemagick_error; |
8389 | } | |
7574650a | 8390 | |
53964682 | 8391 | /* Copy imagemagick image to x with primitive yet robust pixel |
4917006b | 8392 | pusher loop. This has been tested a lot with many different |
549a73b9 | 8393 | images. */ |
7574650a | 8394 | |
4917006b JV |
8395 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
8396 | iterator = NewPixelIterator (image_wand); | |
7d652d97 | 8397 | if (! iterator) |
4917006b | 8398 | { |
466cbae9 AS |
8399 | #ifdef COLOR_TABLE_SUPPORT |
8400 | free_color_table (); | |
8401 | #endif | |
8402 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
8403 | image_error ("Imagemagick pixel iterator creation failed", |
8404 | Qnil, Qnil); | |
3de25479 | 8405 | goto imagemagick_error; |
4917006b JV |
8406 | } |
8407 | ||
13464394 PE |
8408 | image_height = MagickGetImageHeight (image_wand); |
8409 | for (y = 0; y < image_height; y++) | |
4917006b JV |
8410 | { |
8411 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7d652d97 | 8412 | if (! pixels) |
4917006b JV |
8413 | break; |
8414 | for (x = 0; x < (long) width; x++) | |
8415 | { | |
8416 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
8417 | XPutPixel (ximg, x, y, |
8418 | lookup_rgb_color (f, | |
6c596cb2 PE |
8419 | color_scale * pixel.red, |
8420 | color_scale * pixel.green, | |
8421 | color_scale * pixel.blue)); | |
4917006b JV |
8422 | } |
8423 | } | |
8424 | DestroyPixelIterator (iterator); | |
3de25479 | 8425 | } |
3ed42149 | 8426 | |
3de25479 JV |
8427 | #ifdef COLOR_TABLE_SUPPORT |
8428 | /* Remember colors allocated for this image. */ | |
8429 | img->colors = colors_in_color_table (&img->ncolors); | |
8430 | free_color_table (); | |
8431 | #endif /* COLOR_TABLE_SUPPORT */ | |
8432 | ||
3de25479 JV |
8433 | img->width = width; |
8434 | img->height = height; | |
8435 | ||
547c9269 YM |
8436 | /* Put ximg into the image. */ |
8437 | image_put_x_image (f, img, ximg, 0); | |
3de25479 | 8438 | |
f3700365 | 8439 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 8440 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
8441 | if (bg_wand) DestroyPixelWand (bg_wand); |
8442 | ||
03d32f1b | 8443 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 8444 | MagickWandTerminus (); |
3de25479 JV |
8445 | |
8446 | return 1; | |
8447 | ||
8448 | imagemagick_error: | |
466cbae9 | 8449 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
8450 | if (bg_wand) DestroyPixelWand (bg_wand); |
8451 | ||
f853f599 | 8452 | MagickWandTerminus (); |
3de25479 JV |
8453 | /* TODO more cleanup. */ |
8454 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
8455 | return 0; |
8456 | } | |
8457 | ||
4917006b | 8458 | |
578098f3 | 8459 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is true if |
4917006b JV |
8460 | successful. this function will go into the imagemagick_type structure, and |
8461 | the prototype thus needs to be compatible with that structure. */ | |
8462 | ||
578098f3 | 8463 | static bool |
d66c4c7c | 8464 | imagemagick_load (struct frame *f, struct image *img) |
4917006b | 8465 | { |
578098f3 | 8466 | bool success_p = 0; |
4917006b JV |
8467 | Lisp_Object file_name; |
8468 | ||
8469 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8470 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8471 | if (STRINGP (file_name)) | |
8472 | { | |
8473 | Lisp_Object file; | |
4917006b JV |
8474 | |
8475 | file = x_find_image_file (file_name); | |
4917006b JV |
8476 | if (!STRINGP (file)) |
8477 | { | |
8478 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
8479 | return 0; |
8480 | } | |
9ab69568 EZ |
8481 | #ifdef WINDOWSNT |
8482 | file = ansi_encode_filename (file); | |
8483 | #endif | |
33290528 | 8484 | success_p = imagemagick_load_image (f, img, 0, 0, SSDATA (file)); |
4917006b JV |
8485 | } |
8486 | /* Else its not a file, its a lisp object. Load the image from a | |
8487 | lisp object rather than a file. */ | |
8488 | else | |
8489 | { | |
8490 | Lisp_Object data; | |
8491 | ||
8492 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8493 | if (!STRINGP (data)) |
8494 | { | |
8495 | image_error ("Invalid image data `%s'", data, Qnil); | |
8496 | return 0; | |
8497 | } | |
d2a2d277 JV |
8498 | success_p = imagemagick_load_image (f, img, SDATA (data), |
8499 | SBYTES (data), NULL); | |
4917006b JV |
8500 | } |
8501 | ||
8502 | return success_p; | |
8503 | } | |
8504 | ||
a7ca3326 | 8505 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
8506 | doc: /* Return a list of image types supported by ImageMagick. |
8507 | Each entry in this list is a symbol named after an ImageMagick format | |
8508 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
8509 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
dd605cc4 | 8510 | You can also try the shell command: `identify -list format'. |
d66c4c7c CY |
8511 | |
8512 | Note that ImageMagick recognizes many file-types that Emacs does not | |
32d72c2f GM |
8513 | recognize as images, such as C. See `imagemagick-types-enable' |
8514 | and `imagemagick-types-inhibit'. */) | |
a8101f66 | 8515 | (void) |
3de25479 JV |
8516 | { |
8517 | Lisp_Object typelist = Qnil; | |
1ab0dee5 | 8518 | size_t numf = 0; |
3de25479 | 8519 | ExceptionInfo ex; |
2277de02 | 8520 | char **imtypes; |
3f791afe | 8521 | size_t i; |
2277de02 JD |
8522 | |
8523 | GetExceptionInfo(&ex); | |
8524 | imtypes = GetMagickList ("*", &numf, &ex); | |
8525 | DestroyExceptionInfo(&ex); | |
8526 | ||
4917006b JV |
8527 | for (i = 0; i < numf; i++) |
8528 | { | |
40f5d4b7 PE |
8529 | Lisp_Object imagemagicktype = intern (imtypes[i]); |
8530 | typelist = Fcons (imagemagicktype, typelist); | |
ed44be70 | 8531 | imtypes[i] = MagickRelinquishMemory (imtypes[i]); |
f3700365 | 8532 | } |
565935c8 | 8533 | |
ed44be70 | 8534 | MagickRelinquishMemory (imtypes); |
d1d7b339 | 8535 | return Fnreverse (typelist); |
3de25479 | 8536 | } |
7574650a | 8537 | |
3de25479 JV |
8538 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
8539 | ||
8540 | ||
4ef0d4d0 | 8541 | \f |
4ab27a43 GM |
8542 | /*********************************************************************** |
8543 | SVG | |
8544 | ***********************************************************************/ | |
8545 | ||
8546 | #if defined (HAVE_RSVG) | |
8547 | ||
8548 | /* Function prototypes. */ | |
8549 | ||
578098f3 PE |
8550 | static bool svg_image_p (Lisp_Object object); |
8551 | static bool svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 8552 | |
578098f3 PE |
8553 | static bool svg_load_image (struct frame *, struct image *, |
8554 | unsigned char *, ptrdiff_t); | |
4ab27a43 GM |
8555 | |
8556 | /* The symbol `svg' identifying images of this type. */ | |
8557 | ||
4b66faf3 | 8558 | static Lisp_Object Qsvg; |
4ab27a43 GM |
8559 | |
8560 | /* Indices of image specification fields in svg_format, below. */ | |
8561 | ||
8562 | enum svg_keyword_index | |
8563 | { | |
8564 | SVG_TYPE, | |
8565 | SVG_DATA, | |
8566 | SVG_FILE, | |
8567 | SVG_ASCENT, | |
8568 | SVG_MARGIN, | |
8569 | SVG_RELIEF, | |
8570 | SVG_ALGORITHM, | |
8571 | SVG_HEURISTIC_MASK, | |
8572 | SVG_MASK, | |
8573 | SVG_BACKGROUND, | |
8574 | SVG_LAST | |
8575 | }; | |
8576 | ||
8577 | /* Vector of image_keyword structures describing the format | |
8578 | of valid user-defined image specifications. */ | |
8579 | ||
91433552 | 8580 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
8581 | { |
8582 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8583 | {":data", IMAGE_STRING_VALUE, 0}, | |
8584 | {":file", IMAGE_STRING_VALUE, 0}, | |
8585 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8586 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ab27a43 GM |
8587 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8588 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8589 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8590 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8591 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8592 | }; | |
8593 | ||
33d4113c | 8594 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 8595 | static bool init_svg_functions (void); |
bb4d86b4 CY |
8596 | #else |
8597 | #define init_svg_functions NULL | |
8598 | #endif | |
8599 | ||
4ab27a43 GM |
8600 | /* Structure describing the image type `svg'. Its the same type of |
8601 | structure defined for all image formats, handled by emacs image | |
8602 | functions. See struct image_type in dispextern.h. */ | |
8603 | ||
8604 | static struct image_type svg_type = | |
8605 | { | |
4ab27a43 | 8606 | &Qsvg, |
4ab27a43 | 8607 | svg_image_p, |
4ab27a43 | 8608 | svg_load, |
4ab27a43 | 8609 | x_clear_image, |
bb4d86b4 | 8610 | init_svg_functions, |
c21e6151 | 8611 | NULL |
4ab27a43 GM |
8612 | }; |
8613 | ||
8614 | ||
578098f3 | 8615 | /* Return true if OBJECT is a valid SVG image specification. Do |
4ab27a43 GM |
8616 | this by calling parse_image_spec and supplying the keywords that |
8617 | identify the SVG format. */ | |
8618 | ||
578098f3 | 8619 | static bool |
d3da34e0 | 8620 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
8621 | { |
8622 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 8623 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
8624 | |
8625 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8626 | return 0; | |
8627 | ||
8628 | /* Must specify either the :data or :file keyword. */ | |
8629 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8630 | } | |
8631 | ||
8632 | #include <librsvg/rsvg.h> | |
8633 | ||
0fda9b75 | 8634 | #ifdef WINDOWSNT |
5fc9fdeb JR |
8635 | |
8636 | /* SVG library functions. */ | |
40693bba | 8637 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new, (void)); |
8638 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions, (RsvgHandle *, RsvgDimensionData *)); | |
8639 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write, (RsvgHandle *, const guchar *, gsize, GError **)); | |
8640 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close, (RsvgHandle *, GError **)); | |
8641 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf, (RsvgHandle *)); | |
40693bba | 8642 | |
8643 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width, (const GdkPixbuf *)); | |
8644 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height, (const GdkPixbuf *)); | |
8645 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels, (const GdkPixbuf *)); | |
8646 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride, (const GdkPixbuf *)); | |
8647 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace, (const GdkPixbuf *)); | |
8648 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels, (const GdkPixbuf *)); | |
8649 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha, (const GdkPixbuf *)); | |
8650 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample, (const GdkPixbuf *)); | |
8651 | ||
19452b86 | 8652 | #if ! GLIB_CHECK_VERSION (2, 36, 0) |
40693bba | 8653 | DEF_IMGLIB_FN (void, g_type_init, (void)); |
19452b86 | 8654 | #endif |
40693bba | 8655 | DEF_IMGLIB_FN (void, g_object_unref, (gpointer)); |
121ab1cd | 8656 | DEF_IMGLIB_FN (void, g_error_free, (GError *)); |
5fc9fdeb | 8657 | |
df23bf08 | 8658 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb | 8659 | |
578098f3 | 8660 | static bool |
d07ff9db | 8661 | init_svg_functions (void) |
5fc9fdeb | 8662 | { |
b9b37dd0 | 8663 | HMODULE library, gdklib = NULL, glib = NULL, gobject = NULL; |
5fc9fdeb | 8664 | |
d07ff9db CY |
8665 | if (!(glib = w32_delayed_load (Qglib)) |
8666 | || !(gobject = w32_delayed_load (Qgobject)) | |
8667 | || !(gdklib = w32_delayed_load (Qgdk_pixbuf)) | |
8668 | || !(library = w32_delayed_load (Qsvg))) | |
b9b37dd0 JB |
8669 | { |
8670 | if (gdklib) FreeLibrary (gdklib); | |
8671 | if (gobject) FreeLibrary (gobject); | |
8672 | if (glib) FreeLibrary (glib); | |
8673 | return 0; | |
8674 | } | |
5fc9fdeb JR |
8675 | |
8676 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8677 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8678 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8679 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8680 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
5fc9fdeb JR |
8681 | |
8682 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8683 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8684 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8685 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8686 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8687 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8688 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8689 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8690 | ||
19452b86 | 8691 | #if ! GLIB_CHECK_VERSION (2, 36, 0) |
df23bf08 | 8692 | LOAD_IMGLIB_FN (gobject, g_type_init); |
19452b86 | 8693 | #endif |
df23bf08 | 8694 | LOAD_IMGLIB_FN (gobject, g_object_unref); |
5fc9fdeb | 8695 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8696 | |
5fc9fdeb JR |
8697 | return 1; |
8698 | } | |
4ab27a43 | 8699 | |
5fc9fdeb JR |
8700 | #else |
8701 | /* The following aliases for library functions allow dynamic loading | |
8702 | to be used on some platforms. */ | |
4ab27a43 | 8703 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8704 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8705 | #define fn_rsvg_handle_write rsvg_handle_write |
8706 | #define fn_rsvg_handle_close rsvg_handle_close | |
8707 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
4ab27a43 | 8708 | |
5fc9fdeb JR |
8709 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8710 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8711 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8712 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8713 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8714 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8715 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8716 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8717 | ||
19452b86 | 8718 | #if ! GLIB_CHECK_VERSION (2, 36, 0) |
5fc9fdeb | 8719 | #define fn_g_type_init g_type_init |
19452b86 | 8720 | #endif |
5fc9fdeb JR |
8721 | #define fn_g_object_unref g_object_unref |
8722 | #define fn_g_error_free g_error_free | |
0fda9b75 | 8723 | #endif /* !WINDOWSNT */ |
4ab27a43 | 8724 | |
578098f3 PE |
8725 | /* Load SVG image IMG for use on frame F. Value is true if |
8726 | successful. */ | |
4ab27a43 | 8727 | |
578098f3 | 8728 | static bool |
d3da34e0 | 8729 | svg_load (struct frame *f, struct image *img) |
4ab27a43 | 8730 | { |
578098f3 | 8731 | bool success_p = 0; |
4ab27a43 GM |
8732 | Lisp_Object file_name; |
8733 | ||
8734 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8735 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8736 | if (STRINGP (file_name)) | |
8737 | { | |
8738 | Lisp_Object file; | |
8739 | unsigned char *contents; | |
dd52fcea | 8740 | ptrdiff_t size; |
4ab27a43 GM |
8741 | |
8742 | file = x_find_image_file (file_name); | |
4ab27a43 | 8743 | if (!STRINGP (file)) |
c21e6151 YM |
8744 | { |
8745 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8746 | return 0; |
8747 | } | |
8748 | ||
4ab27a43 | 8749 | /* Read the entire file into memory. */ |
33290528 | 8750 | contents = slurp_file (SSDATA (file), &size); |
4ab27a43 | 8751 | if (contents == NULL) |
c21e6151 YM |
8752 | { |
8753 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8754 | return 0; |
8755 | } | |
4ab27a43 | 8756 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8757 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8758 | xfree (contents); |
4ab27a43 GM |
8759 | } |
8760 | /* Else its not a file, its a lisp object. Load the image from a | |
8761 | lisp object rather than a file. */ | |
8762 | else | |
8763 | { | |
8764 | Lisp_Object data; | |
8765 | ||
8766 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8767 | if (!STRINGP (data)) |
8768 | { | |
8769 | image_error ("Invalid image data `%s'", data, Qnil); | |
8770 | return 0; | |
8771 | } | |
4ab27a43 GM |
8772 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8773 | } | |
8774 | ||
8775 | return success_p; | |
8776 | } | |
8777 | ||
bbe6f2aa JB |
8778 | /* svg_load_image is a helper function for svg_load, which does the |
8779 | actual loading given contents and size, apart from frame and image | |
8780 | structures, passed from svg_load. | |
4ab27a43 | 8781 | |
bbe6f2aa | 8782 | Uses librsvg to do most of the image processing. |
c21e6151 | 8783 | |
578098f3 PE |
8784 | Returns true when successful. */ |
8785 | static bool | |
d3da34e0 JB |
8786 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8787 | struct image *img, /* Pointer to emacs image structure. */ | |
8788 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
dd52fcea | 8789 | ptrdiff_t size) /* Size of data in bytes. */ |
4ab27a43 GM |
8790 | { |
8791 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8792 | RsvgDimensionData dimension_data; |
33290528 | 8793 | GError *err = NULL; |
4ab27a43 GM |
8794 | GdkPixbuf *pixbuf; |
8795 | int width; | |
8796 | int height; | |
8797 | const guint8 *pixels; | |
8798 | int rowstride; | |
8799 | XImagePtr ximg; | |
c21e6151 | 8800 | Lisp_Object specified_bg; |
4ab27a43 GM |
8801 | XColor background; |
8802 | int x; | |
8803 | int y; | |
8804 | ||
19452b86 DA |
8805 | #if ! GLIB_CHECK_VERSION (2, 36, 0) |
8806 | /* g_type_init is a glib function that must be called prior to | |
8807 | using gnome type library functions (obsolete since 2.36.0). */ | |
5fc9fdeb | 8808 | fn_g_type_init (); |
19452b86 DA |
8809 | #endif |
8810 | ||
4ab27a43 | 8811 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8812 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8813 | |
8814 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
33290528 PE |
8815 | fn_rsvg_handle_write (rsvg_handle, contents, size, &err); |
8816 | if (err) goto rsvg_error; | |
4ab27a43 GM |
8817 | |
8818 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8819 | for further writes. */ | |
33290528 PE |
8820 | fn_rsvg_handle_close (rsvg_handle, &err); |
8821 | if (err) goto rsvg_error; | |
e025c9c2 CY |
8822 | |
8823 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8824 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8825 | { |
8826 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8827 | goto rsvg_error; | |
8828 | } | |
b2996e57 | 8829 | |
4ab27a43 GM |
8830 | /* We can now get a valid pixel buffer from the svg file, if all |
8831 | went ok. */ | |
df61c790 | 8832 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8833 | if (!pixbuf) goto rsvg_error; |
8834 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8835 | |
8836 | /* Extract some meta data from the svg handle. */ | |
8837 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8838 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8839 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8840 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8841 | ||
8842 | /* Validate the svg meta data. */ | |
8843 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8844 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8845 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8846 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8847 | ||
8848 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
547c9269 | 8849 | if (!image_create_x_image_and_pixmap (f, img, width, height, 0, &ximg, 0)) |
c21e6151 | 8850 | { |
5fc9fdeb | 8851 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8852 | return 0; |
8853 | } | |
4ab27a43 GM |
8854 | |
8855 | init_color_table (); | |
8856 | ||
c21e6151 YM |
8857 | /* Handle alpha channel by combining the image with a background |
8858 | color. */ | |
8859 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 | 8860 | if (!STRINGP (specified_bg) |
33290528 | 8861 | || !x_defined_color (f, SSDATA (specified_bg), &background, 0)) |
f62bc934 | 8862 | x_query_frame_background_color (f, &background); |
4ab27a43 | 8863 | |
8d3c4e79 CY |
8864 | /* SVG pixmaps specify transparency in the last byte, so right |
8865 | shift 8 bits to get rid of it, since emacs doesn't support | |
8866 | transparency. */ | |
8867 | background.red >>= 8; | |
8868 | background.green >>= 8; | |
8869 | background.blue >>= 8; | |
8870 | ||
4ab27a43 GM |
8871 | /* This loop handles opacity values, since Emacs assumes |
8872 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8873 | calculating the resulting color, given the transparency of the |
8874 | pixel, and the image background color. */ | |
4ab27a43 GM |
8875 | for (y = 0; y < height; ++y) |
8876 | { | |
8877 | for (x = 0; x < width; ++x) | |
8878 | { | |
13464394 PE |
8879 | int red; |
8880 | int green; | |
8881 | int blue; | |
8882 | int opacity; | |
4ab27a43 GM |
8883 | |
8884 | red = *pixels++; | |
8885 | green = *pixels++; | |
8886 | blue = *pixels++; | |
8887 | opacity = *pixels++; | |
8888 | ||
8889 | red = ((red * opacity) | |
8890 | + (background.red * ((1 << 8) - opacity))); | |
8891 | green = ((green * opacity) | |
8892 | + (background.green * ((1 << 8) - opacity))); | |
8893 | blue = ((blue * opacity) | |
8894 | + (background.blue * ((1 << 8) - opacity))); | |
8895 | ||
8896 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8897 | } | |
8898 | ||
8899 | pixels += rowstride - 4 * width; | |
8900 | } | |
8901 | ||
8902 | #ifdef COLOR_TABLE_SUPPORT | |
8903 | /* Remember colors allocated for this image. */ | |
8904 | img->colors = colors_in_color_table (&img->ncolors); | |
8905 | free_color_table (); | |
8906 | #endif /* COLOR_TABLE_SUPPORT */ | |
8907 | ||
5fc9fdeb | 8908 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8909 | |
c21e6151 YM |
8910 | img->width = width; |
8911 | img->height = height; | |
8912 | ||
8913 | /* Maybe fill in the background field while we have ximg handy. | |
8914 | Casting avoids a GCC warning. */ | |
8915 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8916 | ||
547c9269 YM |
8917 | /* Put ximg into the image. */ |
8918 | image_put_x_image (f, img, ximg, 0); | |
4ab27a43 | 8919 | |
4ab27a43 GM |
8920 | return 1; |
8921 | ||
8922 | rsvg_error: | |
e025c9c2 | 8923 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8924 | /* FIXME: Use error->message so the user knows what is the actual |
8925 | problem with the image. */ | |
8926 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
33290528 | 8927 | fn_g_error_free (err); |
4ab27a43 GM |
8928 | return 0; |
8929 | } | |
8930 | ||
8931 | #endif /* defined (HAVE_RSVG) */ | |
8932 | ||
8933 | ||
8934 | ||
4ef0d4d0 KS |
8935 | \f |
8936 | /*********************************************************************** | |
8937 | Ghostscript | |
8938 | ***********************************************************************/ | |
8939 | ||
8940 | #ifdef HAVE_X_WINDOWS | |
8941 | #define HAVE_GHOSTSCRIPT 1 | |
8942 | #endif /* HAVE_X_WINDOWS */ | |
8943 | ||
4ef0d4d0 KS |
8944 | #ifdef HAVE_GHOSTSCRIPT |
8945 | ||
578098f3 PE |
8946 | static bool gs_image_p (Lisp_Object object); |
8947 | static bool gs_load (struct frame *f, struct image *img); | |
f57e2426 | 8948 | static void gs_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
8949 | |
8950 | /* Keyword symbols. */ | |
8951 | ||
955cbe7b | 8952 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8953 | |
8954 | /* Indices of image specification fields in gs_format, below. */ | |
8955 | ||
8956 | enum gs_keyword_index | |
8957 | { | |
8958 | GS_TYPE, | |
8959 | GS_PT_WIDTH, | |
8960 | GS_PT_HEIGHT, | |
8961 | GS_FILE, | |
8962 | GS_LOADER, | |
8963 | GS_BOUNDING_BOX, | |
8964 | GS_ASCENT, | |
8965 | GS_MARGIN, | |
8966 | GS_RELIEF, | |
8967 | GS_ALGORITHM, | |
8968 | GS_HEURISTIC_MASK, | |
8969 | GS_MASK, | |
8970 | GS_BACKGROUND, | |
8971 | GS_LAST | |
8972 | }; | |
8973 | ||
8974 | /* Vector of image_keyword structures describing the format | |
8975 | of valid user-defined image specifications. */ | |
8976 | ||
91433552 | 8977 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8978 | { |
8979 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8980 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8981 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8982 | {":file", IMAGE_STRING_VALUE, 1}, | |
8983 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8984 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8985 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8986 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
8987 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8988 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8989 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8990 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8991 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8992 | }; | |
8993 | ||
8994 | /* Structure describing the image type `ghostscript'. */ | |
8995 | ||
8996 | static struct image_type gs_type = | |
8997 | { | |
8998 | &Qpostscript, | |
8999 | gs_image_p, | |
9000 | gs_load, | |
9001 | gs_clear_image, | |
d07ff9db | 9002 | NULL, |
4ef0d4d0 KS |
9003 | NULL |
9004 | }; | |
9005 | ||
9006 | ||
9007 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
9008 | ||
9009 | static void | |
d3da34e0 | 9010 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 9011 | { |
4ef0d4d0 KS |
9012 | x_clear_image (f, img); |
9013 | } | |
9014 | ||
9015 | ||
578098f3 | 9016 | /* Return true if OBJECT is a valid Ghostscript image |
4ef0d4d0 KS |
9017 | specification. */ |
9018 | ||
578098f3 | 9019 | static bool |
d3da34e0 | 9020 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
9021 | { |
9022 | struct image_keyword fmt[GS_LAST]; | |
9023 | Lisp_Object tem; | |
9024 | int i; | |
9025 | ||
72af86bd | 9026 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
9027 | |
9028 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
9029 | return 0; | |
9030 | ||
9031 | /* Bounding box must be a list or vector containing 4 integers. */ | |
9032 | tem = fmt[GS_BOUNDING_BOX].value; | |
9033 | if (CONSP (tem)) | |
9034 | { | |
9035 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
9036 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
9037 | return 0; | |
9038 | if (!NILP (tem)) | |
9039 | return 0; | |
9040 | } | |
9041 | else if (VECTORP (tem)) | |
9042 | { | |
77b37c05 | 9043 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
9044 | return 0; |
9045 | for (i = 0; i < 4; ++i) | |
28be1ada | 9046 | if (!INTEGERP (AREF (tem, i))) |
4ef0d4d0 KS |
9047 | return 0; |
9048 | } | |
9049 | else | |
9050 | return 0; | |
9051 | ||
9052 | return 1; | |
9053 | } | |
9054 | ||
9055 | ||
578098f3 | 9056 | /* Load Ghostscript image IMG for use on frame F. Value is true |
4ef0d4d0 KS |
9057 | if successful. */ |
9058 | ||
578098f3 | 9059 | static bool |
d3da34e0 | 9060 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 | 9061 | { |
13464394 PE |
9062 | uprintmax_t printnum1, printnum2; |
9063 | char buffer[sizeof " " + INT_STRLEN_BOUND (printmax_t)]; | |
4ef0d4d0 | 9064 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; |
4ef0d4d0 KS |
9065 | Lisp_Object frame; |
9066 | double in_width, in_height; | |
9067 | Lisp_Object pixel_colors = Qnil; | |
9068 | ||
9069 | /* Compute pixel size of pixmap needed from the given size in the | |
9070 | image specification. Sizes in the specification are in pt. 1 pt | |
9071 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
9072 | info. */ | |
9073 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 9074 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
42143acd | 9075 | in_width *= FRAME_RES_X (f); |
4ef0d4d0 | 9076 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); |
7574650a | 9077 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
42143acd | 9078 | in_height *= FRAME_RES_Y (f); |
4ef0d4d0 | 9079 | |
13464394 PE |
9080 | if (! (in_width <= INT_MAX && in_height <= INT_MAX |
9081 | && check_image_size (f, in_width, in_height))) | |
f1f25b99 | 9082 | { |
10ea2b82 | 9083 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
9084 | return 0; |
9085 | } | |
13464394 PE |
9086 | img->width = in_width; |
9087 | img->height = in_height; | |
f1f25b99 | 9088 | |
4ef0d4d0 | 9089 | /* Create the pixmap. */ |
a54e2c05 | 9090 | eassert (img->pixmap == NO_PIXMAP); |
4ef0d4d0 | 9091 | |
ca4aa935 PE |
9092 | if (x_check_image_size (0, img->width, img->height)) |
9093 | { | |
9094 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
4d7e6e51 | 9095 | block_input (); |
ca4aa935 PE |
9096 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
9097 | img->width, img->height, | |
9098 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
4d7e6e51 | 9099 | unblock_input (); |
ca4aa935 | 9100 | } |
4ef0d4d0 KS |
9101 | |
9102 | if (!img->pixmap) | |
9103 | { | |
9104 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
9105 | return 0; | |
9106 | } | |
9107 | ||
9108 | /* Call the loader to fill the pixmap. It returns a process object | |
9109 | if successful. We do not record_unwind_protect here because | |
9110 | other places in redisplay like calling window scroll functions | |
9111 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
13464394 PE |
9112 | printnum1 = FRAME_X_WINDOW (f); |
9113 | printnum2 = img->pixmap; | |
620f13b0 | 9114 | window_and_pixmap_id |
a8290ec3 | 9115 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); |
4ef0d4d0 | 9116 | |
13464394 PE |
9117 | printnum1 = FRAME_FOREGROUND_PIXEL (f); |
9118 | printnum2 = FRAME_BACKGROUND_PIXEL (f); | |
a8290ec3 DA |
9119 | pixel_colors |
9120 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
9121 | |
9122 | XSETFRAME (frame, f); | |
9123 | loader = image_spec_value (img->spec, QCloader, NULL); | |
9124 | if (NILP (loader)) | |
9125 | loader = intern ("gs-load-image"); | |
9126 | ||
b50691aa CY |
9127 | img->lisp_data = call6 (loader, frame, img->spec, |
9128 | make_number (img->width), | |
9129 | make_number (img->height), | |
9130 | window_and_pixmap_id, | |
9131 | pixel_colors); | |
9132 | return PROCESSP (img->lisp_data); | |
4ef0d4d0 KS |
9133 | } |
9134 | ||
9135 | ||
9136 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
9137 | frame F. Called from XTread_socket when receiving an event | |
9138 | telling Emacs that Ghostscript has finished drawing. */ | |
9139 | ||
9140 | void | |
d3da34e0 | 9141 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 9142 | { |
354884c4 | 9143 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 PE |
9144 | int class; |
9145 | ptrdiff_t i; | |
4ef0d4d0 KS |
9146 | struct image *img; |
9147 | ||
9148 | /* Find the image containing PIXMAP. */ | |
9149 | for (i = 0; i < c->used; ++i) | |
9150 | if (c->images[i]->pixmap == pixmap) | |
9151 | break; | |
9152 | ||
9153 | /* Should someone in between have cleared the image cache, for | |
9154 | instance, give up. */ | |
9155 | if (i == c->used) | |
9156 | return; | |
9157 | ||
9158 | /* Kill the GS process. We should have found PIXMAP in the image | |
9159 | cache and its image should contain a process object. */ | |
9160 | img = c->images[i]; | |
a54e2c05 | 9161 | eassert (PROCESSP (img->lisp_data)); |
b50691aa CY |
9162 | Fkill_process (img->lisp_data, Qnil); |
9163 | img->lisp_data = Qnil; | |
4ef0d4d0 KS |
9164 | |
9165 | #if defined (HAVE_X_WINDOWS) | |
9166 | ||
9167 | /* On displays with a mutable colormap, figure out the colors | |
9168 | allocated for the image by looking at the pixels of an XImage for | |
9169 | img->pixmap. */ | |
9170 | class = FRAME_X_VISUAL (f)->class; | |
9171 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
9172 | { | |
9173 | XImagePtr ximg; | |
9174 | ||
4d7e6e51 | 9175 | block_input (); |
4ef0d4d0 KS |
9176 | |
9177 | /* Try to get an XImage for img->pixmep. */ | |
9178 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
9179 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
9180 | if (ximg) | |
9181 | { | |
9182 | int x, y; | |
9183 | ||
9184 | /* Initialize the color table. */ | |
9185 | init_color_table (); | |
9186 | ||
9187 | /* For each pixel of the image, look its color up in the | |
9188 | color table. After having done so, the color table will | |
9189 | contain an entry for each color used by the image. */ | |
9190 | for (y = 0; y < img->height; ++y) | |
9191 | for (x = 0; x < img->width; ++x) | |
9192 | { | |
9193 | unsigned long pixel = XGetPixel (ximg, x, y); | |
9194 | lookup_pixel_color (f, pixel); | |
9195 | } | |
9196 | ||
9197 | /* Record colors in the image. Free color table and XImage. */ | |
9198 | #ifdef COLOR_TABLE_SUPPORT | |
9199 | img->colors = colors_in_color_table (&img->ncolors); | |
9200 | free_color_table (); | |
9201 | #endif | |
9202 | XDestroyImage (ximg); | |
9203 | ||
9204 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
9205 | here, we get a BadAccess later in x_clear_image when | |
9206 | freeing the colors. */ | |
9207 | /* We have allocated colors once, but Ghostscript has also | |
9208 | allocated colors on behalf of us. So, to get the | |
9209 | reference counts right, free them once. */ | |
9210 | if (img->ncolors) | |
9211 | x_free_colors (f, img->colors, img->ncolors); | |
9212 | #endif | |
9213 | } | |
9214 | else | |
9215 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
9216 | img->spec, Qnil); | |
9217 | ||
4d7e6e51 | 9218 | unblock_input (); |
4ef0d4d0 KS |
9219 | } |
9220 | #endif /* HAVE_X_WINDOWS */ | |
9221 | ||
9222 | /* Now that we have the pixmap, compute mask and transform the | |
9223 | image if requested. */ | |
4d7e6e51 | 9224 | block_input (); |
4ef0d4d0 | 9225 | postprocess_image (f, img); |
4d7e6e51 | 9226 | unblock_input (); |
4ef0d4d0 KS |
9227 | } |
9228 | ||
9229 | #endif /* HAVE_GHOSTSCRIPT */ | |
9230 | ||
9231 | \f | |
9232 | /*********************************************************************** | |
9233 | Tests | |
9234 | ***********************************************************************/ | |
9235 | ||
e509cfa6 | 9236 | #ifdef GLYPH_DEBUG |
4ef0d4d0 | 9237 | |
a7ca3326 | 9238 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 9239 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 9240 | (Lisp_Object spec) |
4ef0d4d0 KS |
9241 | { |
9242 | return valid_image_p (spec) ? Qt : Qnil; | |
9243 | } | |
9244 | ||
9245 | ||
a7ca3326 | 9246 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 9247 | (Lisp_Object spec) |
4ef0d4d0 | 9248 | { |
13464394 | 9249 | ptrdiff_t id = -1; |
4ef0d4d0 KS |
9250 | |
9251 | if (valid_image_p (spec)) | |
9252 | id = lookup_image (SELECTED_FRAME (), spec); | |
9253 | ||
9254 | debug_print (spec); | |
9255 | return make_number (id); | |
9256 | } | |
9257 | ||
e509cfa6 | 9258 | #endif /* GLYPH_DEBUG */ |
4ef0d4d0 KS |
9259 | |
9260 | ||
9261 | /*********************************************************************** | |
9262 | Initialization | |
9263 | ***********************************************************************/ | |
9264 | ||
d07ff9db | 9265 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0, |
0855eb52 JB |
9266 | doc: /* Initialize image library implementing image type TYPE. |
9267 | Return non-nil if TYPE is a supported image type. | |
9268 | ||
d07ff9db CY |
9269 | If image libraries are loaded dynamically (currently only the case on |
9270 | MS-Windows), load the library for TYPE if it is not yet loaded, using | |
9271 | the library file(s) specified by `dynamic-library-alist'. */) | |
9272 | (Lisp_Object type) | |
0855eb52 | 9273 | { |
d07ff9db | 9274 | return lookup_image_type (type) ? Qt : Qnil; |
bb4d86b4 | 9275 | } |
0855eb52 | 9276 | |
bb4d86b4 | 9277 | /* Look up image type TYPE, and return a pointer to its image_type |
d07ff9db | 9278 | structure. Return 0 if TYPE is not a known image type. */ |
bb4d86b4 CY |
9279 | |
9280 | static struct image_type * | |
d07ff9db | 9281 | lookup_image_type (Lisp_Object type) |
bb4d86b4 | 9282 | { |
2f142cc5 | 9283 | /* Types pbm and xbm are built-in and always available. */ |
bb4d86b4 | 9284 | if (EQ (type, Qpbm)) |
d07ff9db | 9285 | return define_image_type (&pbm_type); |
bb4d86b4 CY |
9286 | |
9287 | if (EQ (type, Qxbm)) | |
d07ff9db | 9288 | return define_image_type (&xbm_type); |
2f142cc5 | 9289 | |
9e2a2647 | 9290 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 9291 | if (EQ (type, Qxpm)) |
d07ff9db | 9292 | return define_image_type (&xpm_type); |
0855eb52 JB |
9293 | #endif |
9294 | ||
9e2a2647 | 9295 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 9296 | if (EQ (type, Qjpeg)) |
d07ff9db | 9297 | return define_image_type (&jpeg_type); |
0855eb52 JB |
9298 | #endif |
9299 | ||
9e2a2647 | 9300 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 9301 | if (EQ (type, Qtiff)) |
d07ff9db | 9302 | return define_image_type (&tiff_type); |
0855eb52 JB |
9303 | #endif |
9304 | ||
9e2a2647 | 9305 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 9306 | if (EQ (type, Qgif)) |
d07ff9db | 9307 | return define_image_type (&gif_type); |
0855eb52 JB |
9308 | #endif |
9309 | ||
9e2a2647 | 9310 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 9311 | if (EQ (type, Qpng)) |
d07ff9db | 9312 | return define_image_type (&png_type); |
0855eb52 JB |
9313 | #endif |
9314 | ||
4ab27a43 GM |
9315 | #if defined (HAVE_RSVG) |
9316 | if (EQ (type, Qsvg)) | |
d07ff9db | 9317 | return define_image_type (&svg_type); |
4ab27a43 | 9318 | #endif |
c21e6151 | 9319 | |
3de25479 | 9320 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 9321 | if (EQ (type, Qimagemagick)) |
d07ff9db | 9322 | return define_image_type (&imagemagick_type); |
3de25479 JV |
9323 | #endif |
9324 | ||
0855eb52 JB |
9325 | #ifdef HAVE_GHOSTSCRIPT |
9326 | if (EQ (type, Qpostscript)) | |
d07ff9db | 9327 | return define_image_type (&gs_type); |
0855eb52 JB |
9328 | #endif |
9329 | ||
bb4d86b4 | 9330 | return NULL; |
0855eb52 JB |
9331 | } |
9332 | ||
aa15c6bb JB |
9333 | /* Reset image_types before dumping. |
9334 | Called from Fdump_emacs. */ | |
9335 | ||
9336 | void | |
9337 | reset_image_types (void) | |
9338 | { | |
9339 | while (image_types) | |
9340 | { | |
9341 | struct image_type *next = image_types->next; | |
9342 | xfree (image_types); | |
9343 | image_types = next; | |
9344 | } | |
0855eb52 JB |
9345 | } |
9346 | ||
4ef0d4d0 | 9347 | void |
d3da34e0 | 9348 | syms_of_image (void) |
4ef0d4d0 | 9349 | { |
fe6aa7a1 BT |
9350 | #include "image.x" |
9351 | ||
aa15c6bb | 9352 | /* Initialize this only once; it will be reset before dumping. */ |
6e6fc3fd RS |
9353 | image_types = NULL; |
9354 | ||
91af3942 | 9355 | /* Must be defined now because we're going to update it below, while |
0855eb52 | 9356 | defining the supported image types. */ |
29208e82 | 9357 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 9358 | doc: /* List of potentially supported image types. |
bbe6f2aa | 9359 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
9360 | To check whether it is really supported, use `image-type-available-p'. */); |
9361 | Vimage_types = Qnil; | |
9362 | ||
29208e82 | 9363 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
9364 | doc: /* Maximum size of images. |
9365 | Emacs will not load an image into memory if its pixel width or | |
9366 | pixel height exceeds this limit. | |
9367 | ||
9368 | If the value is an integer, it directly specifies the maximum | |
9369 | image height and width, measured in pixels. If it is a floating | |
9370 | point number, it specifies the maximum image height and width | |
9371 | as a ratio to the frame height and width. If the value is | |
9372 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
9373 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
9374 | ||
1100a63c CY |
9375 | DEFSYM (Qcount, "count"); |
9376 | DEFSYM (Qextension_data, "extension-data"); | |
9377 | DEFSYM (Qdelay, "delay"); | |
9378 | ||
9379 | DEFSYM (QCascent, ":ascent"); | |
9380 | DEFSYM (QCmargin, ":margin"); | |
9381 | DEFSYM (QCrelief, ":relief"); | |
9382 | DEFSYM (QCconversion, ":conversion"); | |
9383 | DEFSYM (QCcolor_symbols, ":color-symbols"); | |
9384 | DEFSYM (QCheuristic_mask, ":heuristic-mask"); | |
9385 | DEFSYM (QCindex, ":index"); | |
9386 | DEFSYM (QCgeometry, ":geometry"); | |
9387 | DEFSYM (QCcrop, ":crop"); | |
9388 | DEFSYM (QCrotation, ":rotation"); | |
9389 | DEFSYM (QCmatrix, ":matrix"); | |
9390 | DEFSYM (QCcolor_adjustment, ":color-adjustment"); | |
9391 | DEFSYM (QCmask, ":mask"); | |
9392 | ||
9393 | DEFSYM (Qlaplace, "laplace"); | |
9394 | DEFSYM (Qemboss, "emboss"); | |
9395 | DEFSYM (Qedge_detection, "edge-detection"); | |
9396 | DEFSYM (Qheuristic, "heuristic"); | |
9397 | ||
9398 | DEFSYM (Qpostscript, "postscript"); | |
f3f9606c LMI |
9399 | DEFSYM (QCmax_width, ":max-width"); |
9400 | DEFSYM (QCmax_height, ":max-height"); | |
4ef0d4d0 | 9401 | #ifdef HAVE_GHOSTSCRIPT |
5fc9fdeb | 9402 | ADD_IMAGE_TYPE (Qpostscript); |
1100a63c CY |
9403 | DEFSYM (QCloader, ":loader"); |
9404 | DEFSYM (QCbounding_box, ":bounding-box"); | |
9405 | DEFSYM (QCpt_width, ":pt-width"); | |
9406 | DEFSYM (QCpt_height, ":pt-height"); | |
4ef0d4d0 KS |
9407 | #endif /* HAVE_GHOSTSCRIPT */ |
9408 | ||
5be1c984 | 9409 | #ifdef HAVE_NTGUI |
1100a63c | 9410 | DEFSYM (Qlibpng_version, "libpng-version"); |
0514b4be | 9411 | Fset (Qlibpng_version, |
5be1c984 | 9412 | #if HAVE_PNG |
0514b4be | 9413 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 9414 | #else |
0514b4be | 9415 | make_number (-1) |
a5dab159 EZ |
9416 | #endif |
9417 | ); | |
9418 | DEFSYM (Qlibgif_version, "libgif-version"); | |
9419 | Fset (Qlibgif_version, | |
9420 | #ifdef HAVE_GIF | |
9421 | make_number (GIFLIB_MAJOR * 10000 | |
9422 | + GIFLIB_MINOR * 100 | |
9423 | + GIFLIB_RELEASE) | |
9424 | #else | |
9425 | make_number (-1) | |
d14c81ee CB |
9426 | #endif |
9427 | ); | |
9428 | DEFSYM (Qlibjpeg_version, "libjpeg-version"); | |
9429 | Fset (Qlibjpeg_version, | |
9430 | #if HAVE_JPEG | |
9431 | make_number (JPEG_LIB_VERSION) | |
9432 | #else | |
9433 | make_number (-1) | |
5be1c984 | 9434 | #endif |
0514b4be | 9435 | ); |
5be1c984 EZ |
9436 | #endif |
9437 | ||
bb4d86b4 CY |
9438 | DEFSYM (Qpbm, "pbm"); |
9439 | ADD_IMAGE_TYPE (Qpbm); | |
9440 | ||
9441 | DEFSYM (Qxbm, "xbm"); | |
9442 | ADD_IMAGE_TYPE (Qxbm); | |
9443 | ||
9e2a2647 | 9444 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
1100a63c | 9445 | DEFSYM (Qxpm, "xpm"); |
5fc9fdeb | 9446 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
9447 | #endif |
9448 | ||
9e2a2647 | 9449 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
1100a63c | 9450 | DEFSYM (Qjpeg, "jpeg"); |
5fc9fdeb | 9451 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
9452 | #endif |
9453 | ||
9e2a2647 | 9454 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
1100a63c | 9455 | DEFSYM (Qtiff, "tiff"); |
5fc9fdeb | 9456 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
9457 | #endif |
9458 | ||
9e2a2647 | 9459 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
1100a63c | 9460 | DEFSYM (Qgif, "gif"); |
5fc9fdeb | 9461 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
9462 | #endif |
9463 | ||
9e2a2647 | 9464 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
1100a63c | 9465 | DEFSYM (Qpng, "png"); |
5fc9fdeb | 9466 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
9467 | #endif |
9468 | ||
3de25479 | 9469 | #if defined (HAVE_IMAGEMAGICK) |
1100a63c | 9470 | DEFSYM (Qimagemagick, "imagemagick"); |
3de25479 JV |
9471 | ADD_IMAGE_TYPE (Qimagemagick); |
9472 | #endif | |
7574650a | 9473 | |
4ab27a43 | 9474 | #if defined (HAVE_RSVG) |
1100a63c | 9475 | DEFSYM (Qsvg, "svg"); |
5fc9fdeb JR |
9476 | ADD_IMAGE_TYPE (Qsvg); |
9477 | #ifdef HAVE_NTGUI | |
df23bf08 | 9478 | /* Other libraries used directly by svg code. */ |
1100a63c CY |
9479 | DEFSYM (Qgdk_pixbuf, "gdk-pixbuf"); |
9480 | DEFSYM (Qglib, "glib"); | |
9481 | DEFSYM (Qgobject, "gobject"); | |
5fc9fdeb JR |
9482 | #endif /* HAVE_NTGUI */ |
9483 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 9484 | |
29208e82 | 9485 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 9486 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 9487 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
9488 | A cross is always drawn on black & white displays. */); |
9489 | cross_disabled_images = 0; | |
9490 | ||
29208e82 | 9491 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 | 9492 | doc: /* List of directories to search for window system bitmap files. */); |
17e0445b | 9493 | Vx_bitmap_file_path = decode_env_path (0, PATH_BITMAPS, 0); |
4ef0d4d0 | 9494 | |
29208e82 | 9495 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
9496 | doc: /* Maximum time after which images are removed from the cache. |
9497 | When an image has not been displayed this many seconds, Emacs | |
9498 | automatically removes it from the image cache. If the cache contains | |
9499 | a large number of images, the actual eviction time may be shorter. | |
9500 | The value can also be nil, meaning the cache is never cleared. | |
9501 | ||
9502 | The function `clear-image-cache' disregards this variable. */); | |
9503 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 9504 | #ifdef HAVE_IMAGEMAGICK |
af008560 GM |
9505 | DEFVAR_INT ("imagemagick-render-type", imagemagick_render_type, |
9506 | doc: /* Integer indicating which ImageMagick rendering method to use. | |
9507 | The options are: | |
9508 | 0 -- the default method (pixel pushing) | |
9509 | 1 -- a newer method ("MagickExportImagePixels") that may perform | |
9510 | better (speed etc) in some cases, but has not been as thoroughly | |
9511 | tested with Emacs as the default method. This method requires | |
9512 | ImageMagick version 6.4.6 (approximately) or later. | |
9513 | */); | |
9514 | /* MagickExportImagePixels is in 6.4.6-9, but not 6.4.4-10. */ | |
9515 | imagemagick_render_type = 0; | |
7574650a | 9516 | #endif |
4ef0d4d0 | 9517 | |
4ef0d4d0 | 9518 | } |