Commit | Line | Data |
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4ef0d4d0 | 1 | /* Functions for image support on window system. |
32d72c2f | 2 | |
ab422c4d | 3 | Copyright (C) 1989, 1992-2013 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> | |
4ef0d4d0 | 21 | #include <stdio.h> |
4ef0d4d0 | 22 | #include <unistd.h> |
4ef0d4d0 | 23 | |
d7306fe6 DN |
24 | #ifdef HAVE_PNG |
25 | #if defined HAVE_LIBPNG_PNG_H | |
26 | # include <libpng/png.h> | |
27 | #else | |
28 | # include <png.h> | |
29 | #endif | |
285d07e2 | 30 | #endif |
d7306fe6 | 31 | |
c3417a74 DN |
32 | #include <setjmp.h> |
33 | ||
620f13b0 PE |
34 | #include <c-ctype.h> |
35 | ||
4ef0d4d0 KS |
36 | /* This makes the fields of a Display accessible, in Xlib header files. */ |
37 | ||
38 | #define XLIB_ILLEGAL_ACCESS | |
39 | ||
40 | #include "lisp.h" | |
41 | #include "frame.h" | |
42 | #include "window.h" | |
43 | #include "dispextern.h" | |
44 | #include "blockinput.h" | |
45 | #include "systime.h" | |
46 | #include <epaths.h> | |
3dcc8b84 | 47 | #include "character.h" |
022af124 | 48 | #include "coding.h" |
6087292e | 49 | #include "termhooks.h" |
3dcc8b84 | 50 | #include "font.h" |
4ef0d4d0 | 51 | |
17a2cbbd | 52 | #ifdef HAVE_SYS_STAT_H |
4ef0d4d0 | 53 | #include <sys/stat.h> |
17a2cbbd DC |
54 | #endif /* HAVE_SYS_STAT_H */ |
55 | ||
56 | #ifdef HAVE_SYS_TYPES_H | |
57 | #include <sys/types.h> | |
58 | #endif /* HAVE_SYS_TYPES_H */ | |
59 | ||
60 | #ifdef HAVE_WINDOW_SYSTEM | |
61 | #include TERM_HEADER | |
62 | #endif /* HAVE_WINDOW_SYSTEM */ | |
4ef0d4d0 | 63 | |
17a2cbbd | 64 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
65 | #define COLOR_TABLE_SUPPORT 1 |
66 | ||
67 | typedef struct x_bitmap_record Bitmap_Record; | |
5e617bc2 | 68 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
4ef0d4d0 | 69 | #define NO_PIXMAP None |
4ef0d4d0 | 70 | |
9ecf6403 YM |
71 | #define PIX_MASK_RETAIN 0 |
72 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
73 | #endif /* HAVE_X_WINDOWS */ |
74 | ||
4ef0d4d0 | 75 | #ifdef HAVE_NTGUI |
a9e7a9d5 PE |
76 | |
77 | /* We need (or want) w32.h only when we're _not_ compiling for Cygwin. */ | |
78 | #ifdef WINDOWSNT | |
0fda9b75 | 79 | # include "w32.h" |
a9e7a9d5 PE |
80 | #endif |
81 | ||
4ef0d4d0 KS |
82 | /* W32_TODO : Color tables on W32. */ |
83 | #undef COLOR_TABLE_SUPPORT | |
84 | ||
85 | typedef struct w32_bitmap_record Bitmap_Record; | |
5e617bc2 | 86 | #define GET_PIXEL(ximg, x, y) GetPixel (ximg, x, y) |
4ef0d4d0 | 87 | #define NO_PIXMAP 0 |
4ef0d4d0 | 88 | |
9ecf6403 YM |
89 | #define PIX_MASK_RETAIN 0 |
90 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 | 91 | |
4ef0d4d0 KS |
92 | #define x_defined_color w32_defined_color |
93 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 | 94 | |
5be1c984 EZ |
95 | /* Version of libpng that we were compiled with, or -1 if no PNG |
96 | support was compiled in. This is tested by w32-win.el to correctly | |
97 | set up the alist used to search for PNG libraries. */ | |
98 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
99 | #endif /* HAVE_NTGUI */ |
100 | ||
edfda783 | 101 | #ifdef HAVE_NS |
edfda783 AR |
102 | #undef COLOR_TABLE_SUPPORT |
103 | ||
104 | typedef struct ns_bitmap_record Bitmap_Record; | |
105 | ||
5e617bc2 | 106 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
edfda783 AR |
107 | #define NO_PIXMAP 0 |
108 | ||
edfda783 AR |
109 | #define ZPixmap 0 |
110 | ||
111 | #define PIX_MASK_RETAIN 0 | |
112 | #define PIX_MASK_DRAW 1 | |
113 | ||
edfda783 AR |
114 | #define x_defined_color(f, name, color_def, alloc) \ |
115 | ns_defined_color (f, name, color_def, alloc, 0) | |
9e50ff0c | 116 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
117 | #endif /* HAVE_NS */ |
118 | ||
119 | ||
97ec208f DN |
120 | /* The symbol `postscript' identifying images of this type. */ |
121 | ||
955cbe7b | 122 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 123 | |
f57e2426 J |
124 | static void x_disable_image (struct frame *, struct image *); |
125 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
126 | Lisp_Object); | |
4ef0d4d0 | 127 | |
f57e2426 J |
128 | static void init_color_table (void); |
129 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 130 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
131 | static void free_color_table (void); |
132 | static unsigned long *colors_in_color_table (int *n); | |
4ef0d4d0 KS |
133 | #endif |
134 | ||
135 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
136 | id, which is just an int that this section returns. Bitmaps are | |
137 | reference counted so they can be shared among frames. | |
138 | ||
139 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
140 | be used to indicate no bitmap. | |
141 | ||
142 | If you use x_create_bitmap_from_data, then you must keep track of | |
143 | the bitmaps yourself. That is, creating a bitmap from the same | |
144 | data more than once will not be caught. */ | |
145 | ||
edfda783 AR |
146 | #ifdef HAVE_NS |
147 | XImagePtr | |
148 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
149 | unsigned int width, unsigned int height, | |
150 | unsigned long plane_mask, int format) | |
151 | { | |
6fb5f7da | 152 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 153 | ns_retain_object (pixmap); |
edfda783 AR |
154 | return pixmap; |
155 | } | |
156 | ||
bad98418 | 157 | /* Use with images created by ns_image_for_XPM. */ |
edfda783 AR |
158 | unsigned long |
159 | XGetPixel (XImagePtr ximage, int x, int y) | |
160 | { | |
ed3751c8 | 161 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
162 | } |
163 | ||
bad98418 PE |
164 | /* Use with images created by ns_image_for_XPM; alpha set to 1; |
165 | pixel is assumed to be in RGB form. */ | |
edfda783 AR |
166 | void |
167 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
168 | { | |
ed3751c8 | 169 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
170 | } |
171 | #endif /* HAVE_NS */ | |
172 | ||
4ef0d4d0 KS |
173 | |
174 | /* Functions to access the contents of a bitmap, given an id. */ | |
175 | ||
176 | int | |
0766b489 | 177 | x_bitmap_height (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
178 | { |
179 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
180 | } | |
181 | ||
182 | int | |
0766b489 | 183 | x_bitmap_width (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
184 | { |
185 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
186 | } | |
187 | ||
188 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
62aba0d4 | 189 | ptrdiff_t |
0766b489 | 190 | x_bitmap_pixmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 | 191 | { |
f6cfbd8f | 192 | /* HAVE_NTGUI needs the explicit cast here. */ |
62aba0d4 | 193 | return (ptrdiff_t) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; |
4ef0d4d0 KS |
194 | } |
195 | #endif | |
196 | ||
197 | #ifdef HAVE_X_WINDOWS | |
198 | int | |
0766b489 | 199 | x_bitmap_mask (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
200 | { |
201 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
202 | } | |
203 | #endif | |
204 | ||
205 | /* Allocate a new bitmap record. Returns index of new record. */ | |
206 | ||
0766b489 | 207 | static ptrdiff_t |
d3da34e0 | 208 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
209 | { |
210 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 211 | ptrdiff_t i; |
4ef0d4d0 | 212 | |
4ef0d4d0 KS |
213 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) |
214 | return ++dpyinfo->bitmaps_last; | |
215 | ||
216 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
217 | if (dpyinfo->bitmaps[i].refcount == 0) | |
218 | return i + 1; | |
219 | ||
a69fbedb PE |
220 | dpyinfo->bitmaps = |
221 | xpalloc (dpyinfo->bitmaps, &dpyinfo->bitmaps_size, | |
222 | 10, -1, sizeof *dpyinfo->bitmaps); | |
4ef0d4d0 KS |
223 | return ++dpyinfo->bitmaps_last; |
224 | } | |
225 | ||
226 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
227 | ||
228 | void | |
13464394 | 229 | x_reference_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
230 | { |
231 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
232 | } | |
233 | ||
234 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
235 | ||
0766b489 | 236 | ptrdiff_t |
d3da34e0 | 237 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
238 | { |
239 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 240 | ptrdiff_t id; |
4ef0d4d0 KS |
241 | |
242 | #ifdef HAVE_X_WINDOWS | |
243 | Pixmap bitmap; | |
244 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
245 | bits, width, height); | |
246 | if (! bitmap) | |
247 | return -1; | |
248 | #endif /* HAVE_X_WINDOWS */ | |
249 | ||
250 | #ifdef HAVE_NTGUI | |
251 | Pixmap bitmap; | |
252 | bitmap = CreateBitmap (width, height, | |
253 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
254 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
255 | bits); | |
256 | if (! bitmap) | |
257 | return -1; | |
258 | #endif /* HAVE_NTGUI */ | |
259 | ||
edfda783 | 260 | #ifdef HAVE_NS |
ed3751c8 | 261 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
262 | if (!bitmap) |
263 | return -1; | |
264 | #endif | |
265 | ||
4ef0d4d0 | 266 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 267 | |
edfda783 AR |
268 | #ifdef HAVE_NS |
269 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
270 | dpyinfo->bitmaps[id - 1].depth = 1; | |
271 | #endif | |
272 | ||
4ef0d4d0 KS |
273 | dpyinfo->bitmaps[id - 1].file = NULL; |
274 | dpyinfo->bitmaps[id - 1].height = height; | |
275 | dpyinfo->bitmaps[id - 1].width = width; | |
276 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
277 | ||
278 | #ifdef HAVE_X_WINDOWS | |
279 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
280 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
281 | dpyinfo->bitmaps[id - 1].depth = 1; | |
282 | #endif /* HAVE_X_WINDOWS */ | |
283 | ||
284 | #ifdef HAVE_NTGUI | |
285 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
286 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
287 | dpyinfo->bitmaps[id - 1].depth = 1; | |
288 | #endif /* HAVE_NTGUI */ | |
289 | ||
290 | return id; | |
291 | } | |
292 | ||
293 | /* Create bitmap from file FILE for frame F. */ | |
294 | ||
0766b489 | 295 | ptrdiff_t |
d3da34e0 | 296 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 297 | { |
edfda783 AR |
298 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
299 | ||
4ef0d4d0 KS |
300 | #ifdef HAVE_NTGUI |
301 | return -1; /* W32_TODO : bitmap support */ | |
302 | #endif /* HAVE_NTGUI */ | |
303 | ||
edfda783 | 304 | #ifdef HAVE_NS |
0766b489 | 305 | ptrdiff_t id; |
ed3751c8 | 306 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
307 | |
308 | if (!bitmap) | |
309 | return -1; | |
310 | ||
311 | ||
312 | id = x_allocate_bitmap_record (f); | |
313 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
314 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 315 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
edfda783 | 316 | dpyinfo->bitmaps[id - 1].depth = 1; |
ed3751c8 JB |
317 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
318 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
6045c4fd | 319 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
edfda783 AR |
320 | return id; |
321 | #endif | |
322 | ||
4ef0d4d0 | 323 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
324 | unsigned int width, height; |
325 | Pixmap bitmap; | |
0766b489 PE |
326 | int xhot, yhot, result; |
327 | ptrdiff_t id; | |
4ef0d4d0 KS |
328 | Lisp_Object found; |
329 | int fd; | |
330 | char *filename; | |
331 | ||
332 | /* Look for an existing bitmap with the same name. */ | |
333 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
334 | { | |
335 | if (dpyinfo->bitmaps[id].refcount | |
336 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 337 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
338 | { |
339 | ++dpyinfo->bitmaps[id].refcount; | |
340 | return id + 1; | |
341 | } | |
342 | } | |
343 | ||
344 | /* Search bitmap-file-path for the file, if appropriate. */ | |
345 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
346 | if (fd < 0) | |
347 | return -1; | |
348 | emacs_close (fd); | |
349 | ||
51b59d79 | 350 | filename = SSDATA (found); |
4ef0d4d0 KS |
351 | |
352 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
353 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
354 | if (result != BitmapSuccess) | |
355 | return -1; | |
356 | ||
357 | id = x_allocate_bitmap_record (f); | |
358 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
359 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
360 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 361 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
4ef0d4d0 KS |
362 | dpyinfo->bitmaps[id - 1].depth = 1; |
363 | dpyinfo->bitmaps[id - 1].height = height; | |
364 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 365 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
366 | |
367 | return id; | |
368 | #endif /* HAVE_X_WINDOWS */ | |
369 | } | |
370 | ||
371 | /* Free bitmap B. */ | |
372 | ||
373 | static void | |
d3da34e0 | 374 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
375 | { |
376 | #ifdef HAVE_X_WINDOWS | |
377 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
378 | if (bm->have_mask) | |
379 | XFreePixmap (dpyinfo->display, bm->mask); | |
380 | #endif /* HAVE_X_WINDOWS */ | |
381 | ||
382 | #ifdef HAVE_NTGUI | |
383 | DeleteObject (bm->pixmap); | |
384 | #endif /* HAVE_NTGUI */ | |
385 | ||
edfda783 | 386 | #ifdef HAVE_NS |
ed3751c8 | 387 | ns_release_object (bm->img); |
edfda783 AR |
388 | #endif |
389 | ||
4ef0d4d0 KS |
390 | if (bm->file) |
391 | { | |
392 | xfree (bm->file); | |
393 | bm->file = NULL; | |
394 | } | |
395 | } | |
396 | ||
397 | /* Remove reference to bitmap with id number ID. */ | |
398 | ||
399 | void | |
0766b489 | 400 | x_destroy_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
401 | { |
402 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
403 | ||
404 | if (id > 0) | |
405 | { | |
406 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
407 | ||
408 | if (--bm->refcount == 0) | |
409 | { | |
4d7e6e51 | 410 | block_input (); |
65342ae3 | 411 | free_bitmap_record (dpyinfo, bm); |
4d7e6e51 | 412 | unblock_input (); |
4ef0d4d0 KS |
413 | } |
414 | } | |
415 | } | |
416 | ||
417 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
418 | ||
419 | void | |
d3da34e0 | 420 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 | 421 | { |
0766b489 | 422 | ptrdiff_t i; |
4ef0d4d0 KS |
423 | Bitmap_Record *bm = dpyinfo->bitmaps; |
424 | ||
425 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
426 | if (bm->refcount > 0) | |
65342ae3 | 427 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
428 | |
429 | dpyinfo->bitmaps_last = 0; | |
430 | } | |
431 | ||
578098f3 PE |
432 | static bool x_create_x_image_and_pixmap (struct frame *, int, int, int, |
433 | XImagePtr *, Pixmap *); | |
434 | static void x_destroy_x_image (XImagePtr ximg); | |
4ef0d4d0 KS |
435 | |
436 | #ifdef HAVE_X_WINDOWS | |
437 | ||
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 | ||
461 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
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 | ||
520 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
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 DC |
564 | #ifdef WINDOWSNT |
565 | extern Lisp_Object Vlibrary_cache; | |
0855eb52 | 566 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 567 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
568 | #else |
569 | #define CACHE_IMAGE_TYPE(type, status) | |
a9e7a9d5 | 570 | #endif |
0855eb52 JB |
571 | |
572 | #define ADD_IMAGE_TYPE(type) \ | |
573 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
574 | |
575 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 576 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 577 | |
bb4d86b4 | 578 | static struct image_type * |
d07ff9db | 579 | define_image_type (struct image_type *type) |
4ef0d4d0 | 580 | { |
bb4d86b4 CY |
581 | struct image_type *p = NULL; |
582 | Lisp_Object target_type = *type->type; | |
578098f3 | 583 | bool type_valid = 1; |
0855eb52 | 584 | |
4d7e6e51 | 585 | block_input (); |
bb4d86b4 CY |
586 | |
587 | for (p = image_types; p; p = p->next) | |
588 | if (EQ (*p->type, target_type)) | |
589 | goto done; | |
590 | ||
591 | if (type->init) | |
0855eb52 | 592 | { |
a9e7a9d5 | 593 | #if defined HAVE_NTGUI && defined WINDOWSNT |
bb4d86b4 CY |
594 | /* If we failed to load the library before, don't try again. */ |
595 | Lisp_Object tested = Fassq (target_type, Vlibrary_cache); | |
596 | if (CONSP (tested) && NILP (XCDR (tested))) | |
597 | type_valid = 0; | |
598 | else | |
599 | #endif | |
600 | { | |
d07ff9db | 601 | type_valid = type->init (); |
bb4d86b4 CY |
602 | CACHE_IMAGE_TYPE (target_type, type_valid ? Qt : Qnil); |
603 | } | |
604 | } | |
09c01941 | 605 | |
bb4d86b4 | 606 | if (type_valid) |
0855eb52 JB |
607 | { |
608 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
609 | The initialized data segment is read-only. */ | |
09c01941 | 610 | p = xmalloc (sizeof *p); |
ae1d87e2 | 611 | *p = *type; |
0855eb52 JB |
612 | p->next = image_types; |
613 | image_types = p; | |
0855eb52 JB |
614 | } |
615 | ||
bb4d86b4 | 616 | done: |
4d7e6e51 | 617 | unblock_input (); |
bb4d86b4 | 618 | return p; |
4ef0d4d0 KS |
619 | } |
620 | ||
621 | ||
578098f3 | 622 | /* Value is true if OBJECT is a valid Lisp image specification. A |
4ef0d4d0 KS |
623 | valid image specification is a list whose car is the symbol |
624 | `image', and whose rest is a property list. The property list must | |
625 | contain a value for key `:type'. That value must be the name of a | |
626 | supported image type. The rest of the property list depends on the | |
627 | image type. */ | |
628 | ||
578098f3 | 629 | bool |
d3da34e0 | 630 | valid_image_p (Lisp_Object object) |
4ef0d4d0 | 631 | { |
578098f3 | 632 | bool valid_p = 0; |
4ef0d4d0 KS |
633 | |
634 | if (IMAGEP (object)) | |
635 | { | |
636 | Lisp_Object tem; | |
637 | ||
638 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
639 | if (EQ (XCAR (tem), QCtype)) | |
640 | { | |
641 | tem = XCDR (tem); | |
642 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
643 | { | |
644 | struct image_type *type; | |
645 | type = lookup_image_type (XCAR (tem)); | |
646 | if (type) | |
647 | valid_p = type->valid_p (object); | |
648 | } | |
649 | ||
650 | break; | |
651 | } | |
652 | } | |
653 | ||
654 | return valid_p; | |
655 | } | |
656 | ||
657 | ||
658 | /* Log error message with format string FORMAT and argument ARG. | |
659 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
660 | good idea because this would interrupt redisplay, and the error | |
661 | message display would lead to another redisplay. This function | |
662 | therefore simply displays a message. */ | |
663 | ||
664 | static void | |
675e2c69 | 665 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
666 | { |
667 | add_to_log (format, arg1, arg2); | |
668 | } | |
669 | ||
670 | ||
671 | \f | |
672 | /*********************************************************************** | |
673 | Image specifications | |
674 | ***********************************************************************/ | |
675 | ||
676 | enum image_value_type | |
677 | { | |
678 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
679 | IMAGE_STRING_VALUE, | |
680 | IMAGE_STRING_OR_NIL_VALUE, | |
681 | IMAGE_SYMBOL_VALUE, | |
682 | IMAGE_POSITIVE_INTEGER_VALUE, | |
c4a07a4c | 683 | IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, |
4ef0d4d0 KS |
684 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, |
685 | IMAGE_ASCENT_VALUE, | |
686 | IMAGE_INTEGER_VALUE, | |
687 | IMAGE_FUNCTION_VALUE, | |
688 | IMAGE_NUMBER_VALUE, | |
689 | IMAGE_BOOL_VALUE | |
690 | }; | |
691 | ||
692 | /* Structure used when parsing image specifications. */ | |
693 | ||
694 | struct image_keyword | |
695 | { | |
696 | /* Name of keyword. */ | |
675e2c69 | 697 | const char *name; |
4ef0d4d0 KS |
698 | |
699 | /* The type of value allowed. */ | |
700 | enum image_value_type type; | |
701 | ||
578098f3 PE |
702 | /* True means key must be present. */ |
703 | bool mandatory_p; | |
4ef0d4d0 KS |
704 | |
705 | /* Used to recognize duplicate keywords in a property list. */ | |
706 | int count; | |
707 | ||
708 | /* The value that was found. */ | |
709 | Lisp_Object value; | |
710 | }; | |
711 | ||
712 | ||
4ef0d4d0 KS |
713 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec |
714 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
715 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
716 | image_keywords structures of size NKEYWORDS describing other | |
578098f3 | 717 | allowed keyword/value pairs. Value is true if SPEC is valid. */ |
4ef0d4d0 | 718 | |
578098f3 | 719 | static bool |
d3da34e0 JB |
720 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
721 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
722 | { |
723 | int i; | |
724 | Lisp_Object plist; | |
725 | ||
726 | if (!IMAGEP (spec)) | |
727 | return 0; | |
728 | ||
729 | plist = XCDR (spec); | |
730 | while (CONSP (plist)) | |
731 | { | |
732 | Lisp_Object key, value; | |
733 | ||
734 | /* First element of a pair must be a symbol. */ | |
735 | key = XCAR (plist); | |
736 | plist = XCDR (plist); | |
737 | if (!SYMBOLP (key)) | |
738 | return 0; | |
739 | ||
740 | /* There must follow a value. */ | |
741 | if (!CONSP (plist)) | |
742 | return 0; | |
743 | value = XCAR (plist); | |
744 | plist = XCDR (plist); | |
745 | ||
746 | /* Find key in KEYWORDS. Error if not found. */ | |
747 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 748 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
749 | break; |
750 | ||
751 | if (i == nkeywords) | |
752 | continue; | |
753 | ||
754 | /* Record that we recognized the keyword. If a keywords | |
755 | was found more than once, it's an error. */ | |
756 | keywords[i].value = value; | |
4ef0d4d0 KS |
757 | if (keywords[i].count > 1) |
758 | return 0; | |
d311d28c | 759 | ++keywords[i].count; |
4ef0d4d0 KS |
760 | |
761 | /* Check type of value against allowed type. */ | |
762 | switch (keywords[i].type) | |
763 | { | |
764 | case IMAGE_STRING_VALUE: | |
765 | if (!STRINGP (value)) | |
766 | return 0; | |
767 | break; | |
768 | ||
769 | case IMAGE_STRING_OR_NIL_VALUE: | |
770 | if (!STRINGP (value) && !NILP (value)) | |
771 | return 0; | |
772 | break; | |
773 | ||
774 | case IMAGE_SYMBOL_VALUE: | |
775 | if (!SYMBOLP (value)) | |
776 | return 0; | |
777 | break; | |
778 | ||
779 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
13464394 | 780 | if (! RANGED_INTEGERP (1, value, INT_MAX)) |
4ef0d4d0 KS |
781 | return 0; |
782 | break; | |
783 | ||
c4a07a4c PE |
784 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR: |
785 | if (RANGED_INTEGERP (0, value, INT_MAX)) | |
4ef0d4d0 KS |
786 | break; |
787 | if (CONSP (value) | |
c4a07a4c PE |
788 | && RANGED_INTEGERP (0, XCAR (value), INT_MAX) |
789 | && RANGED_INTEGERP (0, XCDR (value), INT_MAX)) | |
4ef0d4d0 KS |
790 | break; |
791 | return 0; | |
792 | ||
793 | case IMAGE_ASCENT_VALUE: | |
794 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
795 | break; | |
13464394 | 796 | else if (RANGED_INTEGERP (0, value, 100)) |
4ef0d4d0 KS |
797 | break; |
798 | return 0; | |
799 | ||
800 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
13464394 PE |
801 | /* Unlike the other integer-related cases, this one does not |
802 | verify that VALUE fits in 'int'. This is because callers | |
803 | want EMACS_INT. */ | |
4ef0d4d0 KS |
804 | if (!INTEGERP (value) || XINT (value) < 0) |
805 | return 0; | |
806 | break; | |
807 | ||
808 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
809 | break; | |
810 | ||
811 | case IMAGE_FUNCTION_VALUE: | |
812 | value = indirect_function (value); | |
ca105506 | 813 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
814 | break; |
815 | return 0; | |
816 | ||
817 | case IMAGE_NUMBER_VALUE: | |
818 | if (!INTEGERP (value) && !FLOATP (value)) | |
819 | return 0; | |
820 | break; | |
821 | ||
822 | case IMAGE_INTEGER_VALUE: | |
13464394 | 823 | if (! TYPE_RANGED_INTEGERP (int, value)) |
4ef0d4d0 KS |
824 | return 0; |
825 | break; | |
826 | ||
827 | case IMAGE_BOOL_VALUE: | |
828 | if (!NILP (value) && !EQ (value, Qt)) | |
829 | return 0; | |
830 | break; | |
831 | ||
832 | default: | |
1088b922 | 833 | emacs_abort (); |
4ef0d4d0 KS |
834 | break; |
835 | } | |
836 | ||
837 | if (EQ (key, QCtype) && !EQ (type, value)) | |
838 | return 0; | |
839 | } | |
840 | ||
841 | /* Check that all mandatory fields are present. */ | |
842 | for (i = 0; i < nkeywords; ++i) | |
843 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
844 | return 0; | |
845 | ||
846 | return NILP (plist); | |
847 | } | |
848 | ||
849 | ||
850 | /* Return the value of KEY in image specification SPEC. Value is nil | |
578098f3 PE |
851 | if KEY is not present in SPEC. Set *FOUND depending on whether KEY |
852 | was found in SPEC. */ | |
4ef0d4d0 KS |
853 | |
854 | static Lisp_Object | |
578098f3 | 855 | image_spec_value (Lisp_Object spec, Lisp_Object key, bool *found) |
4ef0d4d0 KS |
856 | { |
857 | Lisp_Object tail; | |
858 | ||
a54e2c05 | 859 | eassert (valid_image_p (spec)); |
4ef0d4d0 KS |
860 | |
861 | for (tail = XCDR (spec); | |
862 | CONSP (tail) && CONSP (XCDR (tail)); | |
863 | tail = XCDR (XCDR (tail))) | |
864 | { | |
865 | if (EQ (XCAR (tail), key)) | |
866 | { | |
867 | if (found) | |
868 | *found = 1; | |
869 | return XCAR (XCDR (tail)); | |
870 | } | |
871 | } | |
872 | ||
873 | if (found) | |
874 | *found = 0; | |
875 | return Qnil; | |
876 | } | |
877 | ||
878 | ||
879 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
880 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
881 | PIXELS non-nil means return the size in pixels, otherwise return the | |
882 | size in canonical character units. | |
883 | FRAME is the frame on which the image will be displayed. FRAME nil | |
884 | or omitted means use the selected frame. */) | |
5842a27b | 885 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
886 | { |
887 | Lisp_Object size; | |
888 | ||
889 | size = Qnil; | |
890 | if (valid_image_p (spec)) | |
891 | { | |
892 | struct frame *f = check_x_frame (frame); | |
13464394 | 893 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
894 | struct image *img = IMAGE_FROM_ID (f, id); |
895 | int width = img->width + 2 * img->hmargin; | |
896 | int height = img->height + 2 * img->vmargin; | |
897 | ||
898 | if (NILP (pixels)) | |
899 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
900 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
901 | else | |
902 | size = Fcons (make_number (width), make_number (height)); | |
903 | } | |
904 | else | |
905 | error ("Invalid image specification"); | |
906 | ||
907 | return size; | |
908 | } | |
909 | ||
910 | ||
911 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
912 | doc: /* Return t if image SPEC has a mask bitmap. | |
913 | FRAME is the frame on which the image will be displayed. FRAME nil | |
914 | or omitted means use the selected frame. */) | |
5842a27b | 915 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
916 | { |
917 | Lisp_Object mask; | |
918 | ||
919 | mask = Qnil; | |
920 | if (valid_image_p (spec)) | |
921 | { | |
922 | struct frame *f = check_x_frame (frame); | |
13464394 | 923 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
924 | struct image *img = IMAGE_FROM_ID (f, id); |
925 | if (img->mask) | |
926 | mask = Qt; | |
927 | } | |
928 | else | |
929 | error ("Invalid image specification"); | |
930 | ||
931 | return mask; | |
932 | } | |
933 | ||
1546c559 JL |
934 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
935 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
936 | FRAME is the frame on which the image will be displayed. FRAME nil |
937 | or omitted means use the selected frame. */) | |
5842a27b | 938 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
939 | { |
940 | Lisp_Object ext; | |
941 | ||
942 | ext = Qnil; | |
943 | if (valid_image_p (spec)) | |
944 | { | |
945 | struct frame *f = check_x_frame (frame); | |
13464394 | 946 | ptrdiff_t id = lookup_image (f, spec); |
6ac3c7bb | 947 | struct image *img = IMAGE_FROM_ID (f, id); |
b50691aa | 948 | ext = img->lisp_data; |
6ac3c7bb KS |
949 | } |
950 | ||
951 | return ext; | |
952 | } | |
953 | ||
4ef0d4d0 KS |
954 | \f |
955 | /*********************************************************************** | |
956 | Image type independent image structures | |
957 | ***********************************************************************/ | |
958 | ||
11273115 | 959 | #define MAX_IMAGE_SIZE 10.0 |
4ef0d4d0 KS |
960 | /* Allocate and return a new image structure for image specification |
961 | SPEC. SPEC has a hash value of HASH. */ | |
962 | ||
963 | static struct image * | |
0de4bb68 | 964 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 | 965 | { |
23f86fce | 966 | struct image *img = xzalloc (sizeof *img); |
a2bc5bdd | 967 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 | 968 | |
a54e2c05 | 969 | eassert (valid_image_p (spec)); |
a2bc5bdd | 970 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 | 971 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
a54e2c05 | 972 | eassert (img->type != NULL); |
4ef0d4d0 | 973 | img->spec = spec; |
b50691aa | 974 | img->lisp_data = Qnil; |
4ef0d4d0 KS |
975 | img->ascent = DEFAULT_IMAGE_ASCENT; |
976 | img->hash = hash; | |
6ac3c7bb | 977 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
978 | return img; |
979 | } | |
980 | ||
981 | ||
982 | /* Free image IMG which was used on frame F, including its resources. */ | |
983 | ||
984 | static void | |
d3da34e0 | 985 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
986 | { |
987 | if (img) | |
988 | { | |
354884c4 | 989 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
990 | |
991 | /* Remove IMG from the hash table of its cache. */ | |
992 | if (img->prev) | |
993 | img->prev->next = img->next; | |
994 | else | |
995 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
996 | ||
997 | if (img->next) | |
998 | img->next->prev = img->prev; | |
999 | ||
1000 | c->images[img->id] = NULL; | |
1001 | ||
1002 | /* Free resources, then free IMG. */ | |
1003 | img->type->free (f, img); | |
1004 | xfree (img); | |
1005 | } | |
1006 | } | |
1007 | ||
578098f3 | 1008 | /* Return true if the given widths and heights are valid for display. */ |
f1f25b99 | 1009 | |
578098f3 | 1010 | static bool |
d3da34e0 | 1011 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1012 | { |
7df4765a | 1013 | int w, h; |
f1f25b99 | 1014 | |
7df4765a | 1015 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1016 | return 0; |
1017 | ||
7df4765a | 1018 | if (INTEGERP (Vmax_image_size)) |
3f791afe PE |
1019 | return (width <= XINT (Vmax_image_size) |
1020 | && height <= XINT (Vmax_image_size)); | |
7df4765a KS |
1021 | else if (FLOATP (Vmax_image_size)) |
1022 | { | |
e5d76069 PE |
1023 | if (f != NULL) |
1024 | { | |
1025 | w = FRAME_PIXEL_WIDTH (f); | |
1026 | h = FRAME_PIXEL_HEIGHT (f); | |
1027 | } | |
1028 | else | |
1029 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
3f791afe PE |
1030 | return (width <= XFLOAT_DATA (Vmax_image_size) * w |
1031 | && height <= XFLOAT_DATA (Vmax_image_size) * h); | |
7df4765a KS |
1032 | } |
1033 | else | |
1034 | return 1; | |
f1f25b99 | 1035 | } |
4ef0d4d0 KS |
1036 | |
1037 | /* Prepare image IMG for display on frame F. Must be called before | |
1038 | drawing an image. */ | |
1039 | ||
1040 | void | |
d3da34e0 | 1041 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 | 1042 | { |
4ef0d4d0 | 1043 | /* We're about to display IMG, so set its timestamp to `now'. */ |
e9a9ae03 | 1044 | img->timestamp = current_emacs_time (); |
4ef0d4d0 KS |
1045 | |
1046 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1047 | type dependent loader function. */ | |
1048 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
578098f3 | 1049 | img->load_failed_p = ! img->type->load (f, img); |
c7fea325 | 1050 | |
4ef0d4d0 KS |
1051 | } |
1052 | ||
1053 | ||
1054 | /* Value is the number of pixels for the ascent of image IMG when | |
1055 | drawn in face FACE. */ | |
1056 | ||
1057 | int | |
d3da34e0 | 1058 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1059 | { |
1938bc36 | 1060 | int height; |
4ef0d4d0 KS |
1061 | int ascent; |
1062 | ||
1938bc36 KS |
1063 | if (slice->height == img->height) |
1064 | height = img->height + img->vmargin; | |
1065 | else if (slice->y == 0) | |
1066 | height = slice->height + img->vmargin; | |
1067 | else | |
1068 | height = slice->height; | |
1069 | ||
4ef0d4d0 KS |
1070 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1071 | { | |
1072 | if (face->font) | |
1073 | { | |
1074 | #ifdef HAVE_NTGUI | |
1075 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1076 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1077 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1078 | #else |
1079 | /* This expression is arranged so that if the image can't be | |
1080 | exactly centered, it will be moved slightly up. This is | |
1081 | because a typical font is `top-heavy' (due to the presence | |
1082 | uppercase letters), so the image placement should err towards | |
1083 | being top-heavy too. It also just generally looks better. */ | |
5e617bc2 JB |
1084 | ascent = (height + FONT_BASE (face->font) |
1085 | - FONT_DESCENT (face->font) + 1) / 2; | |
4ef0d4d0 KS |
1086 | #endif /* HAVE_NTGUI */ |
1087 | } | |
1088 | else | |
1089 | ascent = height / 2; | |
1090 | } | |
1091 | else | |
13464394 | 1092 | ascent = height * (img->ascent / 100.0); |
4ef0d4d0 KS |
1093 | |
1094 | return ascent; | |
1095 | } | |
1096 | ||
1097 | \f | |
1098 | /* Image background colors. */ | |
1099 | ||
1100 | /* Find the "best" corner color of a bitmap. | |
1101 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1102 | ||
1103 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1104 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1105 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1106 | { |
f0c77cd1 | 1107 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1108 | int i, best_count; |
1109 | ||
6ac3c7bb KS |
1110 | if (corners && corners[BOT_CORNER] >= 0) |
1111 | { | |
1112 | /* Get the colors at the corner_pixels of ximg. */ | |
1113 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1114 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1115 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1116 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1117 | } | |
1118 | else | |
1119 | { | |
1120 | /* Get the colors at the corner_pixels of ximg. */ | |
1121 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1122 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1123 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1124 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1125 | } | |
4ef0d4d0 KS |
1126 | /* Choose the most frequently found color as background. */ |
1127 | for (i = best_count = 0; i < 4; ++i) | |
1128 | { | |
1129 | int j, n; | |
1130 | ||
1131 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1132 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1133 | ++n; |
1134 | ||
1135 | if (n > best_count) | |
6ac3c7bb | 1136 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1137 | } |
1138 | ||
1139 | return best; | |
1140 | } | |
1141 | ||
1142 | /* Portability macros */ | |
1143 | ||
1144 | #ifdef HAVE_NTGUI | |
1145 | ||
1146 | #define Destroy_Image(img_dc, prev) \ | |
1147 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1148 | ||
1149 | #define Free_Pixmap(display, pixmap) \ | |
1150 | DeleteObject (pixmap) | |
1151 | ||
edfda783 AR |
1152 | #elif defined (HAVE_NS) |
1153 | ||
1154 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1155 | ns_release_object (ximg) |
edfda783 AR |
1156 | |
1157 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1158 | ns_release_object (pixmap) |
edfda783 | 1159 | |
4ef0d4d0 KS |
1160 | #else |
1161 | ||
1162 | #define Destroy_Image(ximg, dummy) \ | |
1163 | XDestroyImage (ximg) | |
1164 | ||
1165 | #define Free_Pixmap(display, pixmap) \ | |
1166 | XFreePixmap (display, pixmap) | |
1167 | ||
edfda783 | 1168 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1169 | |
1170 | ||
1171 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1172 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1173 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1174 | use for the heuristic. */ |
4ef0d4d0 KS |
1175 | |
1176 | RGB_PIXEL_COLOR | |
d3da34e0 | 1177 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1178 | { |
1179 | if (! img->background_valid) | |
1180 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1181 | { | |
578098f3 | 1182 | bool free_ximg = !ximg; |
4ef0d4d0 KS |
1183 | #ifdef HAVE_NTGUI |
1184 | HGDIOBJ prev; | |
1185 | #endif /* HAVE_NTGUI */ | |
1186 | ||
1187 | if (free_ximg) | |
1188 | { | |
1189 | #ifndef HAVE_NTGUI | |
1190 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1191 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1192 | #else | |
1193 | HDC frame_dc = get_frame_dc (f); | |
1194 | ximg = CreateCompatibleDC (frame_dc); | |
1195 | release_frame_dc (f, frame_dc); | |
1196 | prev = SelectObject (ximg, img->pixmap); | |
1197 | #endif /* !HAVE_NTGUI */ | |
1198 | } | |
1199 | ||
6ac3c7bb | 1200 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1201 | |
1202 | if (free_ximg) | |
1203 | Destroy_Image (ximg, prev); | |
1f026899 | 1204 | |
4ef0d4d0 KS |
1205 | img->background_valid = 1; |
1206 | } | |
1207 | ||
1208 | return img->background; | |
1209 | } | |
1210 | ||
1211 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1212 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1213 | existing XImage object to use for the heuristic. */ | |
1214 | ||
1215 | int | |
d3da34e0 | 1216 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1217 | { |
1218 | if (! img->background_transparent_valid) | |
1219 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1220 | { | |
1221 | if (img->mask) | |
1222 | { | |
578098f3 | 1223 | bool free_mask = !mask; |
4ef0d4d0 KS |
1224 | #ifdef HAVE_NTGUI |
1225 | HGDIOBJ prev; | |
1226 | #endif /* HAVE_NTGUI */ | |
1227 | ||
1228 | if (free_mask) | |
1229 | { | |
1230 | #ifndef HAVE_NTGUI | |
1231 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1232 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1233 | #else | |
1234 | HDC frame_dc = get_frame_dc (f); | |
1235 | mask = CreateCompatibleDC (frame_dc); | |
1236 | release_frame_dc (f, frame_dc); | |
1237 | prev = SelectObject (mask, img->mask); | |
1238 | #endif /* HAVE_NTGUI */ | |
1239 | } | |
1240 | ||
1241 | img->background_transparent | |
6ac3c7bb | 1242 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1243 | |
1244 | if (free_mask) | |
1245 | Destroy_Image (mask, prev); | |
1246 | } | |
1247 | else | |
1248 | img->background_transparent = 0; | |
1249 | ||
1250 | img->background_transparent_valid = 1; | |
1251 | } | |
1252 | ||
1253 | return img->background_transparent; | |
1254 | } | |
1255 | ||
1256 | \f | |
1257 | /*********************************************************************** | |
1258 | Helper functions for X image types | |
1259 | ***********************************************************************/ | |
1260 | ||
578098f3 PE |
1261 | /* Clear X resources of image IMG on frame F. PIXMAP_P means free the |
1262 | pixmap if any. MASK_P means clear the mask pixmap if any. | |
1263 | COLORS_P means free colors allocated for the image, if any. */ | |
4ef0d4d0 KS |
1264 | |
1265 | static void | |
578098f3 PE |
1266 | x_clear_image_1 (struct frame *f, struct image *img, bool pixmap_p, |
1267 | bool mask_p, bool colors_p) | |
4ef0d4d0 KS |
1268 | { |
1269 | if (pixmap_p && img->pixmap) | |
1270 | { | |
1271 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1272 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1273 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1274 | img->background_valid = 0; |
1275 | } | |
1276 | ||
1277 | if (mask_p && img->mask) | |
1278 | { | |
1279 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1280 | img->mask = NO_PIXMAP; | |
1281 | img->background_transparent_valid = 0; | |
1282 | } | |
1283 | ||
1284 | if (colors_p && img->ncolors) | |
1285 | { | |
4ef0d4d0 KS |
1286 | /* W32_TODO: color table support. */ |
1287 | #ifdef HAVE_X_WINDOWS | |
1288 | x_free_colors (f, img->colors, img->ncolors); | |
1289 | #endif /* HAVE_X_WINDOWS */ | |
1290 | xfree (img->colors); | |
1291 | img->colors = NULL; | |
1292 | img->ncolors = 0; | |
1293 | } | |
c7fea325 | 1294 | |
4ef0d4d0 KS |
1295 | } |
1296 | ||
1297 | /* Free X resources of image IMG which is used on frame F. */ | |
1298 | ||
1299 | static void | |
d3da34e0 | 1300 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1301 | { |
4d7e6e51 | 1302 | block_input (); |
4ef0d4d0 | 1303 | x_clear_image_1 (f, img, 1, 1, 1); |
4d7e6e51 | 1304 | unblock_input (); |
4ef0d4d0 KS |
1305 | } |
1306 | ||
1307 | ||
1308 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1309 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1310 | IMG->colors, so that it can be freed again. Value is the pixel | |
1311 | color. */ | |
1312 | ||
1313 | static unsigned long | |
d3da34e0 JB |
1314 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1315 | unsigned long dflt) | |
4ef0d4d0 KS |
1316 | { |
1317 | XColor color; | |
1318 | unsigned long result; | |
1319 | ||
a54e2c05 | 1320 | eassert (STRINGP (color_name)); |
4ef0d4d0 | 1321 | |
3f791afe PE |
1322 | if (x_defined_color (f, SSDATA (color_name), &color, 1) |
1323 | && img->ncolors < min (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *img->colors, | |
1324 | INT_MAX)) | |
4ef0d4d0 KS |
1325 | { |
1326 | /* This isn't called frequently so we get away with simply | |
1327 | reallocating the color vector to the needed size, here. */ | |
ddff3151 | 1328 | ptrdiff_t ncolors = img->ncolors + 1; |
38182d90 | 1329 | img->colors = xrealloc (img->colors, ncolors * sizeof *img->colors); |
ddff3151 PE |
1330 | img->colors[ncolors - 1] = color.pixel; |
1331 | img->ncolors = ncolors; | |
4ef0d4d0 KS |
1332 | result = color.pixel; |
1333 | } | |
1334 | else | |
1335 | result = dflt; | |
1336 | ||
1337 | return result; | |
1338 | } | |
1339 | ||
1340 | ||
1341 | \f | |
1342 | /*********************************************************************** | |
1343 | Image Cache | |
1344 | ***********************************************************************/ | |
1345 | ||
f57e2426 | 1346 | static void cache_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
1347 | |
1348 | /* Return a new, initialized image cache that is allocated from the | |
1349 | heap. Call free_image_cache to free an image cache. */ | |
1350 | ||
1351 | struct image_cache * | |
d3da34e0 | 1352 | make_image_cache (void) |
4ef0d4d0 | 1353 | { |
23f86fce | 1354 | struct image_cache *c = xzalloc (sizeof *c); |
4ef0d4d0 KS |
1355 | int size; |
1356 | ||
ddff3151 | 1357 | size = 50; |
23f86fce | 1358 | c->images = xmalloc (size * sizeof *c->images); |
ddff3151 | 1359 | c->size = size; |
4ef0d4d0 | 1360 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
23f86fce | 1361 | c->buckets = xzalloc (size); |
4ef0d4d0 KS |
1362 | return c; |
1363 | } | |
1364 | ||
1365 | ||
d3c35d17 CY |
1366 | /* Find an image matching SPEC in the cache, and return it. If no |
1367 | image is found, return NULL. */ | |
1368 | static struct image * | |
0de4bb68 | 1369 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1370 | { |
91be6b66 | 1371 | struct image *img; |
354884c4 | 1372 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1373 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1374 | ||
8198352b CY |
1375 | if (!c) return NULL; |
1376 | ||
d3c35d17 CY |
1377 | /* If the image spec does not specify a background color, the cached |
1378 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1379 | The foreground color must also match, for the sake of monochrome |
1380 | images. | |
1381 | ||
1382 | In fact, we could ignore the foreground color matching condition | |
1383 | for color images, or if the image spec specifies :foreground; | |
1384 | similarly we could ignore the background color matching condition | |
1385 | for formats that don't use transparency (such as jpeg), or if the | |
1386 | image spec specifies :background. However, the extra memory | |
1387 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1388 | |
483e7ae0 | 1389 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1390 | if (img->hash == hash |
1391 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1392 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1393 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1394 | break; |
1395 | return img; | |
1396 | } | |
1397 | ||
1398 | ||
1399 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1400 | ||
1401 | static void | |
d3da34e0 | 1402 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1403 | { |
1404 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1405 | if (img) | |
be3faa80 CY |
1406 | { |
1407 | free_image (f, img); | |
1408 | /* As display glyphs may still be referring to the image ID, we | |
1409 | must garbage the frame (Bug#6426). */ | |
1410 | SET_FRAME_GARBAGED (f); | |
1411 | } | |
483e7ae0 CY |
1412 | } |
1413 | ||
1414 | ||
4ef0d4d0 KS |
1415 | /* Free image cache of frame F. Be aware that X frames share images |
1416 | caches. */ | |
1417 | ||
1418 | void | |
d3da34e0 | 1419 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1420 | { |
354884c4 | 1421 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1422 | if (c) |
1423 | { | |
13464394 | 1424 | ptrdiff_t i; |
4ef0d4d0 KS |
1425 | |
1426 | /* Cache should not be referenced by any frame when freed. */ | |
a54e2c05 | 1427 | eassert (c->refcount == 0); |
4ef0d4d0 KS |
1428 | |
1429 | for (i = 0; i < c->used; ++i) | |
1430 | free_image (f, c->images[i]); | |
1431 | xfree (c->images); | |
1432 | xfree (c->buckets); | |
1433 | xfree (c); | |
354884c4 | 1434 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1435 | } |
1436 | } | |
1437 | ||
1438 | ||
a2bc5bdd SM |
1439 | /* Clear image cache of frame F. FILTER=t means free all images. |
1440 | FILTER=nil means clear only images that haven't been | |
1441 | displayed for some time. | |
1442 | Else, only free the images which have FILTER in their `dependencies'. | |
1443 | Should be called from time to time to reduce the number of loaded images. | |
1444 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1445 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1446 | |
ce0ad53d | 1447 | static void |
a2bc5bdd | 1448 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1449 | { |
354884c4 | 1450 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1451 | |
98fe5161 | 1452 | if (c) |
4ef0d4d0 | 1453 | { |
13464394 | 1454 | ptrdiff_t i, nfreed = 0; |
4ef0d4d0 KS |
1455 | |
1456 | /* Block input so that we won't be interrupted by a SIGIO | |
1457 | while being in an inconsistent state. */ | |
4d7e6e51 | 1458 | block_input (); |
4ef0d4d0 | 1459 | |
98fe5161 CY |
1460 | if (!NILP (filter)) |
1461 | { | |
1462 | /* Filter image cache. */ | |
1463 | for (i = 0; i < c->used; ++i) | |
1464 | { | |
1465 | struct image *img = c->images[i]; | |
1466 | if (img && (EQ (Qt, filter) | |
1467 | || !NILP (Fmember (filter, img->dependencies)))) | |
1468 | { | |
1469 | free_image (f, img); | |
1470 | ++nfreed; | |
1471 | } | |
1472 | } | |
1473 | } | |
1474 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1475 | { |
98fe5161 | 1476 | /* Free cache based on timestamp. */ |
d35af63c PE |
1477 | EMACS_TIME old, t; |
1478 | double delay; | |
13464394 | 1479 | ptrdiff_t nimages = 0; |
98fe5161 CY |
1480 | |
1481 | for (i = 0; i < c->used; ++i) | |
1482 | if (c->images[i]) | |
1483 | nimages++; | |
1484 | ||
1485 | /* If the number of cached images has grown unusually large, | |
1486 | decrease the cache eviction delay (Bug#6230). */ | |
13464394 | 1487 | delay = XINT (Vimage_cache_eviction_delay); |
98fe5161 | 1488 | if (nimages > 40) |
13464394 PE |
1489 | delay = 1600 * delay / nimages / nimages; |
1490 | delay = max (delay, 1); | |
98fe5161 | 1491 | |
e9a9ae03 PE |
1492 | t = current_emacs_time (); |
1493 | old = sub_emacs_time (t, EMACS_TIME_FROM_DOUBLE (delay)); | |
98fe5161 CY |
1494 | |
1495 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1496 | { |
98fe5161 | 1497 | struct image *img = c->images[i]; |
d35af63c | 1498 | if (img && EMACS_TIME_LT (img->timestamp, old)) |
98fe5161 CY |
1499 | { |
1500 | free_image (f, img); | |
1501 | ++nfreed; | |
1502 | } | |
4ef0d4d0 KS |
1503 | } |
1504 | } | |
1505 | ||
1506 | /* We may be clearing the image cache because, for example, | |
1507 | Emacs was iconified for a longer period of time. In that | |
1508 | case, current matrices may still contain references to | |
1509 | images freed above. So, clear these matrices. */ | |
1510 | if (nfreed) | |
1511 | { | |
1512 | Lisp_Object tail, frame; | |
1513 | ||
1514 | FOR_EACH_FRAME (tail, frame) | |
1515 | { | |
6ae141d6 PE |
1516 | struct frame *fr = XFRAME (frame); |
1517 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1518 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1519 | } |
1520 | ||
1521 | ++windows_or_buffers_changed; | |
1522 | } | |
1523 | ||
4d7e6e51 | 1524 | unblock_input (); |
4ef0d4d0 KS |
1525 | } |
1526 | } | |
1527 | ||
354884c4 | 1528 | void |
a2bc5bdd | 1529 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1530 | { |
1531 | /* FIXME: We want to do | |
1532 | * struct terminal *t; | |
1533 | * for (t = terminal_list; t; t = t->next_terminal) | |
1534 | * clear_image_cache (t, filter); */ | |
1535 | Lisp_Object tail, frame; | |
1536 | FOR_EACH_FRAME (tail, frame) | |
1537 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1538 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1539 | } |
4ef0d4d0 KS |
1540 | |
1541 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1542 | 0, 1, 0, | |
a2bc5bdd SM |
1543 | doc: /* Clear the image cache. |
1544 | FILTER nil or a frame means clear all images in the selected frame. | |
1545 | FILTER t means clear the image caches of all frames. | |
1546 | Anything else, means only clear those images which refer to FILTER, | |
1547 | which is then usually a filename. */) | |
5842a27b | 1548 | (Lisp_Object filter) |
4ef0d4d0 | 1549 | { |
a2bc5bdd SM |
1550 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1551 | clear_image_caches (filter); | |
4ef0d4d0 | 1552 | else |
a2bc5bdd | 1553 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1554 | |
1555 | return Qnil; | |
1556 | } | |
1557 | ||
1558 | ||
110683ad | 1559 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1560 | 1, 2, 0, |
110683ad CY |
1561 | doc: /* Fush the image with specification SPEC on frame FRAME. |
1562 | This removes the image from the Emacs image cache. If SPEC specifies | |
1563 | an image file, the next redisplay of this image will read from the | |
1564 | current contents of that file. | |
1565 | ||
483e7ae0 CY |
1566 | FRAME nil or omitted means use the selected frame. |
1567 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1568 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1569 | { |
1570 | if (!valid_image_p (spec)) | |
1571 | error ("Invalid image specification"); | |
1572 | ||
1573 | if (EQ (frame, Qt)) | |
1574 | { | |
1575 | Lisp_Object tail; | |
1576 | FOR_EACH_FRAME (tail, frame) | |
1577 | { | |
1578 | struct frame *f = XFRAME (frame); | |
1579 | if (FRAME_WINDOW_P (f)) | |
1580 | uncache_image (f, spec); | |
1581 | } | |
1582 | } | |
1583 | else | |
1584 | uncache_image (check_x_frame (frame), spec); | |
1585 | ||
1586 | return Qnil; | |
1587 | } | |
1588 | ||
1589 | ||
4ef0d4d0 KS |
1590 | /* Compute masks and transform image IMG on frame F, as specified |
1591 | by the image's specification, */ | |
1592 | ||
1593 | static void | |
d3da34e0 | 1594 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1595 | { |
1596 | /* Manipulation of the image's mask. */ | |
1597 | if (img->pixmap) | |
1598 | { | |
1599 | Lisp_Object conversion, spec; | |
1600 | Lisp_Object mask; | |
1601 | ||
1602 | spec = img->spec; | |
1603 | ||
1604 | /* `:heuristic-mask t' | |
1605 | `:mask heuristic' | |
1606 | means build a mask heuristically. | |
1607 | `:heuristic-mask (R G B)' | |
1608 | `:mask (heuristic (R G B))' | |
1609 | means build a mask from color (R G B) in the | |
1610 | image. | |
1611 | `:mask nil' | |
1612 | means remove a mask, if any. */ | |
1613 | ||
1614 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1615 | if (!NILP (mask)) | |
1616 | x_build_heuristic_mask (f, img, mask); | |
1617 | else | |
1618 | { | |
578098f3 | 1619 | bool found_p; |
4ef0d4d0 KS |
1620 | |
1621 | mask = image_spec_value (spec, QCmask, &found_p); | |
1622 | ||
1623 | if (EQ (mask, Qheuristic)) | |
1624 | x_build_heuristic_mask (f, img, Qt); | |
1625 | else if (CONSP (mask) | |
1626 | && EQ (XCAR (mask), Qheuristic)) | |
1627 | { | |
1628 | if (CONSP (XCDR (mask))) | |
1629 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1630 | else | |
1631 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1632 | } | |
1633 | else if (NILP (mask) && found_p && img->mask) | |
1634 | { | |
1635 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1636 | img->mask = NO_PIXMAP; | |
1637 | } | |
1638 | } | |
1639 | ||
1640 | ||
1641 | /* Should we apply an image transformation algorithm? */ | |
1642 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1643 | if (EQ (conversion, Qdisabled)) | |
1644 | x_disable_image (f, img); | |
1645 | else if (EQ (conversion, Qlaplace)) | |
1646 | x_laplace (f, img); | |
1647 | else if (EQ (conversion, Qemboss)) | |
1648 | x_emboss (f, img); | |
1649 | else if (CONSP (conversion) | |
1650 | && EQ (XCAR (conversion), Qedge_detection)) | |
1651 | { | |
1652 | Lisp_Object tem; | |
1653 | tem = XCDR (conversion); | |
1654 | if (CONSP (tem)) | |
1655 | x_edge_detection (f, img, | |
1656 | Fplist_get (tem, QCmatrix), | |
1657 | Fplist_get (tem, QCcolor_adjustment)); | |
1658 | } | |
1659 | } | |
1660 | } | |
1661 | ||
1662 | ||
1663 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1664 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1665 | ||
13464394 | 1666 | ptrdiff_t |
d3da34e0 | 1667 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1668 | { |
4ef0d4d0 | 1669 | struct image *img; |
0de4bb68 | 1670 | EMACS_UINT hash; |
4ef0d4d0 KS |
1671 | |
1672 | /* F must be a window-system frame, and SPEC must be a valid image | |
1673 | specification. */ | |
a54e2c05 DA |
1674 | eassert (FRAME_WINDOW_P (f)); |
1675 | eassert (valid_image_p (spec)); | |
4ef0d4d0 | 1676 | |
4ef0d4d0 KS |
1677 | /* Look up SPEC in the hash table of the image cache. */ |
1678 | hash = sxhash (spec, 0); | |
d3c35d17 | 1679 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1680 | if (img && img->load_failed_p) |
1681 | { | |
1682 | free_image (f, img); | |
1683 | img = NULL; | |
1684 | } | |
1685 | ||
4ef0d4d0 KS |
1686 | /* If not found, create a new image and cache it. */ |
1687 | if (img == NULL) | |
1688 | { | |
4d7e6e51 | 1689 | block_input (); |
4ef0d4d0 KS |
1690 | img = make_image (spec, hash); |
1691 | cache_image (f, img); | |
578098f3 | 1692 | img->load_failed_p = ! img->type->load (f, img); |
c5b8e0ea YM |
1693 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1694 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1695 | |
1696 | /* If we can't load the image, and we don't have a width and | |
1697 | height, use some arbitrary width and height so that we can | |
1698 | draw a rectangle for it. */ | |
1699 | if (img->load_failed_p) | |
1700 | { | |
1701 | Lisp_Object value; | |
1702 | ||
1703 | value = image_spec_value (spec, QCwidth, NULL); | |
1704 | img->width = (INTEGERP (value) | |
1705 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1706 | value = image_spec_value (spec, QCheight, NULL); | |
1707 | img->height = (INTEGERP (value) | |
1708 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1709 | } | |
1710 | else | |
1711 | { | |
1712 | /* Handle image type independent image attributes | |
1713 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1714 | `:background COLOR'. */ | |
1715 | Lisp_Object ascent, margin, relief, bg; | |
d311d28c | 1716 | int relief_bound; |
4ef0d4d0 KS |
1717 | |
1718 | ascent = image_spec_value (spec, QCascent, NULL); | |
1719 | if (INTEGERP (ascent)) | |
1720 | img->ascent = XFASTINT (ascent); | |
1721 | else if (EQ (ascent, Qcenter)) | |
1722 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1723 | ||
1724 | margin = image_spec_value (spec, QCmargin, NULL); | |
13464394 | 1725 | if (INTEGERP (margin)) |
4ef0d4d0 | 1726 | img->vmargin = img->hmargin = XFASTINT (margin); |
13464394 | 1727 | else if (CONSP (margin)) |
4ef0d4d0 | 1728 | { |
13464394 PE |
1729 | img->hmargin = XFASTINT (XCAR (margin)); |
1730 | img->vmargin = XFASTINT (XCDR (margin)); | |
4ef0d4d0 KS |
1731 | } |
1732 | ||
1733 | relief = image_spec_value (spec, QCrelief, NULL); | |
d311d28c PE |
1734 | relief_bound = INT_MAX - max (img->hmargin, img->vmargin); |
1735 | if (RANGED_INTEGERP (- relief_bound, relief, relief_bound)) | |
4ef0d4d0 KS |
1736 | { |
1737 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1738 | img->hmargin += eabs (img->relief); |
1739 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1740 | } |
1741 | ||
1742 | if (! img->background_valid) | |
1743 | { | |
1744 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1745 | if (!NILP (bg)) | |
1746 | { | |
1747 | img->background | |
1748 | = x_alloc_image_color (f, img, bg, | |
1749 | FRAME_BACKGROUND_PIXEL (f)); | |
1750 | img->background_valid = 1; | |
1751 | } | |
1752 | } | |
1753 | ||
1754 | /* Do image transformations and compute masks, unless we | |
1755 | don't have the image yet. */ | |
1756 | if (!EQ (*img->type->type, Qpostscript)) | |
1757 | postprocess_image (f, img); | |
1758 | } | |
1759 | ||
4d7e6e51 | 1760 | unblock_input (); |
4ef0d4d0 KS |
1761 | } |
1762 | ||
1763 | /* We're using IMG, so set its timestamp to `now'. */ | |
e9a9ae03 | 1764 | img->timestamp = current_emacs_time (); |
4ef0d4d0 | 1765 | |
4ef0d4d0 KS |
1766 | /* Value is the image id. */ |
1767 | return img->id; | |
1768 | } | |
1769 | ||
1770 | ||
1771 | /* Cache image IMG in the image cache of frame F. */ | |
1772 | ||
1773 | static void | |
d3da34e0 | 1774 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1775 | { |
354884c4 | 1776 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 | 1777 | ptrdiff_t i; |
4ef0d4d0 KS |
1778 | |
1779 | /* Find a free slot in c->images. */ | |
1780 | for (i = 0; i < c->used; ++i) | |
1781 | if (c->images[i] == NULL) | |
1782 | break; | |
1783 | ||
1784 | /* If no free slot found, maybe enlarge c->images. */ | |
1785 | if (i == c->used && c->used == c->size) | |
a69fbedb | 1786 | c->images = xpalloc (c->images, &c->size, 1, -1, sizeof *c->images); |
4ef0d4d0 KS |
1787 | |
1788 | /* Add IMG to c->images, and assign IMG an id. */ | |
1789 | c->images[i] = img; | |
1790 | img->id = i; | |
1791 | if (i == c->used) | |
1792 | ++c->used; | |
1793 | ||
1794 | /* Add IMG to the cache's hash table. */ | |
1795 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1796 | img->next = c->buckets[i]; | |
1797 | if (img->next) | |
1798 | img->next->prev = img; | |
1799 | img->prev = NULL; | |
1800 | c->buckets[i] = img; | |
1801 | } | |
1802 | ||
1803 | ||
1804 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1805 | Lisp Objects in the image cache. */ | |
1806 | ||
354884c4 SM |
1807 | /* Mark Lisp objects in image IMG. */ |
1808 | ||
1809 | static void | |
d3da34e0 | 1810 | mark_image (struct image *img) |
354884c4 SM |
1811 | { |
1812 | mark_object (img->spec); | |
a2bc5bdd | 1813 | mark_object (img->dependencies); |
354884c4 | 1814 | |
b50691aa CY |
1815 | if (!NILP (img->lisp_data)) |
1816 | mark_object (img->lisp_data); | |
354884c4 SM |
1817 | } |
1818 | ||
1819 | ||
4ef0d4d0 | 1820 | void |
354884c4 | 1821 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1822 | { |
354884c4 | 1823 | if (c) |
4ef0d4d0 | 1824 | { |
13464394 | 1825 | ptrdiff_t i; |
354884c4 SM |
1826 | for (i = 0; i < c->used; ++i) |
1827 | if (c->images[i]) | |
1828 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1829 | } |
1830 | } | |
1831 | ||
1832 | ||
1833 | \f | |
1834 | /*********************************************************************** | |
9e2a2647 | 1835 | X / NS / W32 support code |
4ef0d4d0 KS |
1836 | ***********************************************************************/ |
1837 | ||
0fda9b75 | 1838 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
1839 | |
1840 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1841 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1842 | |
1843 | /* Macro for loading those image functions from the library. */ | |
1844 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1845 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1846 | if (!fn_##func) return 0; \ | |
1847 | } | |
1848 | ||
0fda9b75 | 1849 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 1850 | |
578098f3 | 1851 | /* Return true if XIMG's size WIDTH x HEIGHT doesn't break the |
476371c4 | 1852 | windowing system. |
ca4aa935 PE |
1853 | WIDTH and HEIGHT must both be positive. |
1854 | If XIMG is null, assume it is a bitmap. */ | |
578098f3 | 1855 | static bool |
ca4aa935 PE |
1856 | x_check_image_size (XImagePtr ximg, int width, int height) |
1857 | { | |
476371c4 | 1858 | #ifdef HAVE_X_WINDOWS |
ca4aa935 PE |
1859 | /* Respect Xlib's limits: it cannot deal with images that have more |
1860 | than INT_MAX (and/or UINT_MAX) bytes. And respect Emacs's limits | |
476371c4 | 1861 | of PTRDIFF_MAX (and/or SIZE_MAX) bytes for any object. */ |
ca4aa935 PE |
1862 | enum |
1863 | { | |
1864 | XLIB_BYTES_MAX = min (INT_MAX, UINT_MAX), | |
1865 | X_IMAGE_BYTES_MAX = min (XLIB_BYTES_MAX, min (PTRDIFF_MAX, SIZE_MAX)) | |
1866 | }; | |
1867 | ||
1868 | int bitmap_pad, depth, bytes_per_line; | |
1869 | if (ximg) | |
1870 | { | |
1871 | bitmap_pad = ximg->bitmap_pad; | |
1872 | depth = ximg->depth; | |
1873 | bytes_per_line = ximg->bytes_per_line; | |
1874 | } | |
1875 | else | |
1876 | { | |
1877 | bitmap_pad = 8; | |
1878 | depth = 1; | |
1879 | bytes_per_line = (width >> 3) + ((width & 7) != 0); | |
1880 | } | |
1881 | return (width <= (INT_MAX - (bitmap_pad - 1)) / depth | |
1882 | && height <= X_IMAGE_BYTES_MAX / bytes_per_line); | |
476371c4 PE |
1883 | #else |
1884 | /* FIXME: Implement this check for the HAVE_NS and HAVE_NTGUI cases. | |
1885 | For now, assume that every image size is allowed on these systems. */ | |
1886 | return 1; | |
1887 | #endif | |
ca4aa935 | 1888 | } |
4ef0d4d0 KS |
1889 | |
1890 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1891 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1892 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1893 | via xmalloc. Print error messages via image_error if an error | |
578098f3 | 1894 | occurs. Value is true if successful. |
4ef0d4d0 KS |
1895 | |
1896 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1897 | should indicate the bit depth of the image. */ | |
1898 | ||
578098f3 | 1899 | static bool |
d3da34e0 JB |
1900 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1901 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1902 | { |
1903 | #ifdef HAVE_X_WINDOWS | |
1904 | Display *display = FRAME_X_DISPLAY (f); | |
1905 | Window window = FRAME_X_WINDOW (f); | |
1906 | Screen *screen = FRAME_X_SCREEN (f); | |
1907 | ||
4d7e6e51 | 1908 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
1909 | |
1910 | if (depth <= 0) | |
1911 | depth = DefaultDepthOfScreen (screen); | |
1912 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1913 | depth, ZPixmap, 0, NULL, width, height, | |
1914 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1915 | if (*ximg == NULL) | |
1916 | { | |
1917 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1918 | return 0; | |
1919 | } | |
1920 | ||
ca4aa935 PE |
1921 | if (! x_check_image_size (*ximg, width, height)) |
1922 | { | |
1923 | x_destroy_x_image (*ximg); | |
1924 | *ximg = NULL; | |
1925 | image_error ("Image too large (%dx%d)", | |
1926 | make_number (width), make_number (height)); | |
1927 | return 0; | |
1928 | } | |
1929 | ||
4ef0d4d0 | 1930 | /* Allocate image raster. */ |
23f86fce | 1931 | (*ximg)->data = xmalloc ((*ximg)->bytes_per_line * height); |
4ef0d4d0 KS |
1932 | |
1933 | /* Allocate a pixmap of the same size. */ | |
1934 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1935 | if (*pixmap == NO_PIXMAP) | |
1936 | { | |
1937 | x_destroy_x_image (*ximg); | |
1938 | *ximg = NULL; | |
1939 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1940 | return 0; | |
1941 | } | |
1942 | ||
1943 | return 1; | |
1944 | #endif /* HAVE_X_WINDOWS */ | |
1945 | ||
1946 | #ifdef HAVE_NTGUI | |
1947 | ||
1948 | BITMAPINFOHEADER *header; | |
1949 | HDC hdc; | |
1950 | int scanline_width_bits; | |
1951 | int remainder; | |
1952 | int palette_colors = 0; | |
1953 | ||
1954 | if (depth == 0) | |
1955 | depth = 24; | |
1956 | ||
1957 | if (depth != 1 && depth != 4 && depth != 8 | |
1958 | && depth != 16 && depth != 24 && depth != 32) | |
1959 | { | |
1960 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
1961 | return 0; | |
1962 | } | |
1963 | ||
1964 | scanline_width_bits = width * depth; | |
1965 | remainder = scanline_width_bits % 32; | |
1966 | ||
1967 | if (remainder) | |
1968 | scanline_width_bits += 32 - remainder; | |
1969 | ||
1970 | /* Bitmaps with a depth less than 16 need a palette. */ | |
1971 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
1972 | if (depth < 16) | |
657d08d3 | 1973 | palette_colors = 1 << (depth - 1); |
4ef0d4d0 KS |
1974 | |
1975 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
4ef0d4d0 | 1976 | |
72af86bd AS |
1977 | header = &(*ximg)->info.bmiHeader; |
1978 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
1979 | header->biSize = sizeof (*header); |
1980 | header->biWidth = width; | |
1981 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
1982 | header->biPlanes = 1; | |
1983 | header->biBitCount = depth; | |
1984 | header->biCompression = BI_RGB; | |
1985 | header->biClrUsed = palette_colors; | |
1986 | ||
1987 | /* TODO: fill in palette. */ | |
1988 | if (depth == 1) | |
1989 | { | |
1990 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
1991 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
1992 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
1993 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
1994 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
1995 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
1996 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
1997 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
1998 | } | |
1999 | ||
2000 | hdc = get_frame_dc (f); | |
2001 | ||
2002 | /* Create a DIBSection and raster array for the bitmap, | |
2003 | and store its handle in *pixmap. */ | |
2004 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2005 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2006 | /* casting avoids a GCC warning */ |
2007 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2008 | |
2009 | /* Realize display palette and garbage all frames. */ | |
2010 | release_frame_dc (f, hdc); | |
2011 | ||
2012 | if (*pixmap == NULL) | |
2013 | { | |
5fc9fdeb | 2014 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2015 | Lisp_Object errcode; |
2016 | /* All system errors are < 10000, so the following is safe. */ | |
13464394 | 2017 | XSETINT (errcode, err); |
4ef0d4d0 KS |
2018 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); |
2019 | x_destroy_x_image (*ximg); | |
2020 | return 0; | |
2021 | } | |
2022 | ||
2023 | return 1; | |
2024 | ||
2025 | #endif /* HAVE_NTGUI */ | |
2026 | ||
edfda783 | 2027 | #ifdef HAVE_NS |
ed3751c8 | 2028 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2029 | if (*pixmap == 0) |
2030 | { | |
2031 | *ximg = NULL; | |
2032 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2033 | return 0; | |
2034 | } | |
2035 | *ximg = *pixmap; | |
2036 | return 1; | |
2037 | #endif | |
4ef0d4d0 KS |
2038 | } |
2039 | ||
2040 | ||
2041 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2042 | ||
2043 | static void | |
d3da34e0 | 2044 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 | 2045 | { |
4d7e6e51 | 2046 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2047 | if (ximg) |
2048 | { | |
2049 | #ifdef HAVE_X_WINDOWS | |
2050 | xfree (ximg->data); | |
2051 | ximg->data = NULL; | |
2052 | XDestroyImage (ximg); | |
2053 | #endif /* HAVE_X_WINDOWS */ | |
2054 | #ifdef HAVE_NTGUI | |
2055 | /* Data will be freed by DestroyObject. */ | |
2056 | ximg->data = NULL; | |
2057 | xfree (ximg); | |
2058 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2059 | #ifdef HAVE_NS |
ed3751c8 | 2060 | ns_release_object (ximg); |
edfda783 | 2061 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2062 | } |
2063 | } | |
2064 | ||
2065 | ||
2066 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2067 | are width and height of both the image and pixmap. */ | |
2068 | ||
2069 | static void | |
d3da34e0 | 2070 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2071 | { |
2072 | #ifdef HAVE_X_WINDOWS | |
2073 | GC gc; | |
2074 | ||
4d7e6e51 | 2075 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2076 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); |
2077 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2078 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2079 | #endif /* HAVE_X_WINDOWS */ | |
2080 | ||
2081 | #ifdef HAVE_NTGUI | |
2082 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2083 | HDC hdc = get_frame_dc (f); | |
2084 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2085 | release_frame_dc (f, hdc); | |
2086 | #endif | |
2087 | #endif /* HAVE_NTGUI */ | |
2088 | ||
edfda783 | 2089 | #ifdef HAVE_NS |
a54e2c05 | 2090 | eassert (ximg == pixmap); |
ed3751c8 | 2091 | ns_retain_object (ximg); |
edfda783 | 2092 | #endif |
4ef0d4d0 KS |
2093 | } |
2094 | ||
2095 | \f | |
2096 | /*********************************************************************** | |
2097 | File Handling | |
2098 | ***********************************************************************/ | |
2099 | ||
6678dc11 | 2100 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2101 | x-bitmap-file-path. Value is the encoded full name of the file |
2102 | found, or nil if not found. */ | |
4ef0d4d0 | 2103 | |
c640aa9b | 2104 | Lisp_Object |
d3da34e0 | 2105 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2106 | { |
2107 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2108 | int fd; |
2109 | ||
6678dc11 GM |
2110 | /* TODO I think this should use something like image-load-path |
2111 | instead. Unfortunately, that can contain non-string elements. */ | |
2112 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2113 | Vdata_directory), | |
2114 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2115 | |
050b82f6 | 2116 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2117 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2118 | ||
2119 | if (fd == -1) | |
2120 | file_found = Qnil; | |
2121 | else | |
022af124 KH |
2122 | { |
2123 | file_found = ENCODE_FILE (file_found); | |
2124 | close (fd); | |
2125 | } | |
4ef0d4d0 | 2126 | |
4ef0d4d0 KS |
2127 | return file_found; |
2128 | } | |
2129 | ||
2130 | ||
2131 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2132 | with xmalloc holding FILE's contents. Value is null if an error | |
2133 | occurred. *SIZE is set to the size of the file. */ | |
2134 | ||
2135 | static unsigned char * | |
dd52fcea | 2136 | slurp_file (char *file, ptrdiff_t *size) |
4ef0d4d0 | 2137 | { |
d6453ce4 | 2138 | FILE *fp = fopen (file, "rb"); |
4ef0d4d0 KS |
2139 | unsigned char *buf = NULL; |
2140 | struct stat st; | |
2141 | ||
d6453ce4 | 2142 | if (fp && fstat (fileno (fp), &st) == 0 |
dd52fcea | 2143 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
23f86fce | 2144 | && (buf = xmalloc (st.st_size), |
4ef0d4d0 KS |
2145 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2146 | { | |
2147 | *size = st.st_size; | |
2148 | fclose (fp); | |
2149 | } | |
2150 | else | |
2151 | { | |
2152 | if (fp) | |
2153 | fclose (fp); | |
2154 | if (buf) | |
2155 | { | |
2156 | xfree (buf); | |
2157 | buf = NULL; | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | return buf; | |
2162 | } | |
2163 | ||
2164 | ||
2165 | \f | |
4ef0d4d0 KS |
2166 | /*********************************************************************** |
2167 | XBM images | |
2168 | ***********************************************************************/ | |
2169 | ||
578098f3 PE |
2170 | static bool xbm_load (struct frame *f, struct image *img); |
2171 | static bool xbm_image_p (Lisp_Object object); | |
2172 | static bool xbm_file_p (Lisp_Object); | |
4ef0d4d0 KS |
2173 | |
2174 | ||
2175 | /* Indices of image specification fields in xbm_format, below. */ | |
2176 | ||
2177 | enum xbm_keyword_index | |
2178 | { | |
2179 | XBM_TYPE, | |
2180 | XBM_FILE, | |
2181 | XBM_WIDTH, | |
2182 | XBM_HEIGHT, | |
2183 | XBM_DATA, | |
2184 | XBM_FOREGROUND, | |
2185 | XBM_BACKGROUND, | |
2186 | XBM_ASCENT, | |
2187 | XBM_MARGIN, | |
2188 | XBM_RELIEF, | |
2189 | XBM_ALGORITHM, | |
2190 | XBM_HEURISTIC_MASK, | |
2191 | XBM_MASK, | |
2192 | XBM_LAST | |
2193 | }; | |
2194 | ||
2195 | /* Vector of image_keyword structures describing the format | |
2196 | of valid XBM image specifications. */ | |
2197 | ||
91433552 | 2198 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2199 | { |
2200 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2201 | {":file", IMAGE_STRING_VALUE, 0}, | |
2202 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2203 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2204 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2205 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2206 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2207 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 2208 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
2209 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
2210 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2211 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2212 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2213 | }; | |
2214 | ||
2215 | /* Structure describing the image type XBM. */ | |
2216 | ||
2217 | static struct image_type xbm_type = | |
2218 | { | |
2219 | &Qxbm, | |
2220 | xbm_image_p, | |
2221 | xbm_load, | |
2222 | x_clear_image, | |
bb4d86b4 | 2223 | NULL, |
4ef0d4d0 KS |
2224 | NULL |
2225 | }; | |
2226 | ||
2227 | /* Tokens returned from xbm_scan. */ | |
2228 | ||
2229 | enum xbm_token | |
2230 | { | |
2231 | XBM_TK_IDENT = 256, | |
2232 | XBM_TK_NUMBER | |
2233 | }; | |
2234 | ||
2235 | ||
578098f3 | 2236 | /* Return true if OBJECT is a valid XBM-type image specification. |
4ef0d4d0 KS |
2237 | A valid specification is a list starting with the symbol `image' |
2238 | The rest of the list is a property list which must contain an | |
578098f3 | 2239 | entry `:type xbm'. |
4ef0d4d0 KS |
2240 | |
2241 | If the specification specifies a file to load, it must contain | |
2242 | an entry `:file FILENAME' where FILENAME is a string. | |
2243 | ||
2244 | If the specification is for a bitmap loaded from memory it must | |
2245 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2246 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2247 | ||
2248 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2249 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2250 | ||
2251 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2252 | ||
2253 | 3. a vector of strings or bool-vectors, one for each line of the | |
2254 | bitmap. | |
2255 | ||
bbe6f2aa | 2256 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2257 | may not be specified in this case because they are defined in the |
2258 | XBM file. | |
2259 | ||
2260 | Both the file and data forms may contain the additional entries | |
2261 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2262 | foreground and background of the frame on which the image is | |
2263 | displayed is used. */ | |
2264 | ||
578098f3 | 2265 | static bool |
d3da34e0 | 2266 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2267 | { |
2268 | struct image_keyword kw[XBM_LAST]; | |
2269 | ||
72af86bd | 2270 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2271 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2272 | return 0; | |
2273 | ||
a54e2c05 | 2274 | eassert (EQ (kw[XBM_TYPE].value, Qxbm)); |
4ef0d4d0 KS |
2275 | |
2276 | if (kw[XBM_FILE].count) | |
2277 | { | |
2278 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2279 | return 0; | |
2280 | } | |
2281 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2282 | { | |
2283 | /* In-memory XBM file. */ | |
2284 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2285 | return 0; | |
2286 | } | |
2287 | else | |
2288 | { | |
2289 | Lisp_Object data; | |
13464394 | 2290 | int width, height; |
4ef0d4d0 KS |
2291 | |
2292 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2293 | if (!kw[XBM_WIDTH].count | |
2294 | || !kw[XBM_HEIGHT].count | |
2295 | || !kw[XBM_DATA].count) | |
2296 | return 0; | |
2297 | ||
2298 | data = kw[XBM_DATA].value; | |
2299 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2300 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2301 | ||
2302 | /* Check type of data, and width and height against contents of | |
2303 | data. */ | |
2304 | if (VECTORP (data)) | |
2305 | { | |
45aebb64 | 2306 | EMACS_INT i; |
4ef0d4d0 KS |
2307 | |
2308 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2309 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2310 | return 0; |
2311 | ||
2312 | /* Each string or bool-vector in data must be large enough | |
2313 | for one line of the image. */ | |
2314 | for (i = 0; i < height; ++i) | |
2315 | { | |
28be1ada | 2316 | Lisp_Object elt = AREF (data, i); |
4ef0d4d0 KS |
2317 | |
2318 | if (STRINGP (elt)) | |
2319 | { | |
2320 | if (SCHARS (elt) | |
2321 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2322 | return 0; | |
2323 | } | |
2324 | else if (BOOL_VECTOR_P (elt)) | |
2325 | { | |
2326 | if (XBOOL_VECTOR (elt)->size < width) | |
2327 | return 0; | |
2328 | } | |
2329 | else | |
2330 | return 0; | |
2331 | } | |
2332 | } | |
2333 | else if (STRINGP (data)) | |
2334 | { | |
2335 | if (SCHARS (data) | |
2336 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2337 | return 0; | |
2338 | } | |
2339 | else if (BOOL_VECTOR_P (data)) | |
2340 | { | |
ca4aa935 | 2341 | if (XBOOL_VECTOR (data)->size / height < width) |
4ef0d4d0 KS |
2342 | return 0; |
2343 | } | |
2344 | else | |
2345 | return 0; | |
2346 | } | |
2347 | ||
2348 | return 1; | |
2349 | } | |
2350 | ||
2351 | ||
2352 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2353 | either an enumerator from enum xbm_token, or a character for a | |
2354 | single-character token, or 0 at end of file. If scanning an | |
2355 | identifier, store the lexeme of the identifier in SVAL. If | |
2356 | scanning a number, store its value in *IVAL. */ | |
2357 | ||
2358 | static int | |
d3da34e0 | 2359 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2360 | { |
2361 | unsigned int c; | |
2362 | ||
2363 | loop: | |
2364 | ||
2365 | /* Skip white space. */ | |
620f13b0 | 2366 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
2367 | ; |
2368 | ||
2369 | if (*s >= end) | |
2370 | c = 0; | |
620f13b0 | 2371 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2372 | { |
2373 | int value = 0, digit; | |
2374 | ||
2375 | if (c == '0' && *s < end) | |
2376 | { | |
2377 | c = *(*s)++; | |
2378 | if (c == 'x' || c == 'X') | |
2379 | { | |
2380 | while (*s < end) | |
2381 | { | |
2382 | c = *(*s)++; | |
620f13b0 | 2383 | if (c_isdigit (c)) |
4ef0d4d0 KS |
2384 | digit = c - '0'; |
2385 | else if (c >= 'a' && c <= 'f') | |
2386 | digit = c - 'a' + 10; | |
2387 | else if (c >= 'A' && c <= 'F') | |
2388 | digit = c - 'A' + 10; | |
2389 | else | |
2390 | break; | |
2391 | value = 16 * value + digit; | |
2392 | } | |
2393 | } | |
620f13b0 | 2394 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2395 | { |
2396 | value = c - '0'; | |
2397 | while (*s < end | |
620f13b0 | 2398 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2399 | value = 8 * value + c - '0'; |
2400 | } | |
2401 | } | |
2402 | else | |
2403 | { | |
2404 | value = c - '0'; | |
2405 | while (*s < end | |
620f13b0 | 2406 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2407 | value = 10 * value + c - '0'; |
2408 | } | |
2409 | ||
2410 | if (*s < end) | |
2411 | *s = *s - 1; | |
2412 | *ival = value; | |
2413 | c = XBM_TK_NUMBER; | |
2414 | } | |
620f13b0 | 2415 | else if (c_isalpha (c) || c == '_') |
4ef0d4d0 KS |
2416 | { |
2417 | *sval++ = c; | |
2418 | while (*s < end | |
620f13b0 | 2419 | && (c = *(*s)++, (c_isalnum (c) || c == '_'))) |
4ef0d4d0 KS |
2420 | *sval++ = c; |
2421 | *sval = 0; | |
2422 | if (*s < end) | |
2423 | *s = *s - 1; | |
2424 | c = XBM_TK_IDENT; | |
2425 | } | |
2426 | else if (c == '/' && **s == '*') | |
2427 | { | |
2428 | /* C-style comment. */ | |
2429 | ++*s; | |
2430 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2431 | ++*s; | |
2432 | if (**s) | |
2433 | { | |
2434 | *s += 2; | |
2435 | goto loop; | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | return c; | |
2440 | } | |
2441 | ||
2442 | #ifdef HAVE_NTGUI | |
2443 | ||
2444 | /* Create a Windows bitmap from X bitmap data. */ | |
2445 | static HBITMAP | |
2446 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2447 | { | |
2448 | static unsigned char swap_nibble[16] | |
2449 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2450 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2451 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2452 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2453 | int i, j, w1, w2; | |
2454 | unsigned char *bits, *p; | |
2455 | HBITMAP bmp; | |
2456 | ||
2457 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2458 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
38182d90 | 2459 | bits = alloca (height * w2); |
72af86bd | 2460 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2461 | for (i = 0; i < height; i++) |
2462 | { | |
2463 | p = bits + i*w2; | |
2464 | for (j = 0; j < w1; j++) | |
2465 | { | |
2466 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2467 | unsigned char c = *data++; | |
2468 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2469 | | (swap_nibble[(c>>4) & 0xf])); | |
2470 | } | |
2471 | } | |
2472 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2473 | ||
2474 | return bmp; | |
2475 | } | |
2476 | ||
3046a84b | 2477 | static void |
7c3320d8 JB |
2478 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2479 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2480 | { |
2481 | HDC hdc, old_img_dc, new_img_dc; | |
2482 | HGDIOBJ old_prev, new_prev; | |
2483 | HBITMAP new_pixmap; | |
2484 | ||
2485 | hdc = get_frame_dc (f); | |
2486 | old_img_dc = CreateCompatibleDC (hdc); | |
2487 | new_img_dc = CreateCompatibleDC (hdc); | |
2488 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2489 | release_frame_dc (f, hdc); | |
2490 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2491 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2492 | /* Windows convention for mono bitmaps is black = background, |
2493 | white = foreground. */ | |
2386b1f1 JR |
2494 | SetTextColor (new_img_dc, background); |
2495 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2496 | |
2497 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2498 | 0, 0, SRCCOPY); | |
2499 | ||
2500 | SelectObject (old_img_dc, old_prev); | |
2501 | SelectObject (new_img_dc, new_prev); | |
2502 | DeleteDC (old_img_dc); | |
2503 | DeleteDC (new_img_dc); | |
2504 | DeleteObject (img->pixmap); | |
2505 | if (new_pixmap == 0) | |
2506 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2507 | else | |
2508 | img->pixmap = new_pixmap; | |
2509 | } | |
2510 | ||
2511 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2512 | ||
2513 | #else | |
2514 | ||
2515 | #define XBM_BIT_SHUFFLE(b) (b) | |
2516 | ||
2517 | #endif /* HAVE_NTGUI */ | |
2518 | ||
2519 | ||
2520 | static void | |
d3da34e0 JB |
2521 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2522 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
578098f3 | 2523 | bool non_default_colors) |
4ef0d4d0 KS |
2524 | { |
2525 | #ifdef HAVE_NTGUI | |
2526 | img->pixmap | |
2527 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2528 | ||
2529 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2530 | if (non_default_colors) | |
2531 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2532 | |
2533 | #elif defined (HAVE_NS) | |
ed3751c8 | 2534 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2535 | |
4ef0d4d0 | 2536 | #else |
ca4aa935 PE |
2537 | img->pixmap = |
2538 | (x_check_image_size (0, img->width, img->height) | |
2539 | ? XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
4ef0d4d0 KS |
2540 | FRAME_X_WINDOW (f), |
2541 | data, | |
2542 | img->width, img->height, | |
2543 | fg, bg, | |
ca4aa935 PE |
2544 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))) |
2545 | : NO_PIXMAP); | |
edfda783 | 2546 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2547 | } |
2548 | ||
2549 | ||
2550 | ||
2551 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2552 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2553 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2554 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
578098f3 PE |
2555 | Value is true if successful. DATA null means just test if |
2556 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR, | |
2557 | inhibit the call to image_error when the image size is invalid (the | |
2558 | bitmap remains unread). */ | |
4ef0d4d0 | 2559 | |
578098f3 | 2560 | static bool |
d3da34e0 | 2561 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2562 | int *width, int *height, char **data, |
578098f3 | 2563 | bool inhibit_image_error) |
4ef0d4d0 KS |
2564 | { |
2565 | unsigned char *s = contents; | |
2566 | char buffer[BUFSIZ]; | |
578098f3 PE |
2567 | bool padding_p = 0; |
2568 | bool v10 = 0; | |
ca4aa935 | 2569 | int bytes_per_line, i, nbytes; |
b8dc29e9 | 2570 | char *p; |
4ef0d4d0 KS |
2571 | int value; |
2572 | int LA1; | |
2573 | ||
2574 | #define match() \ | |
2575 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2576 | ||
2577 | #define expect(TOKEN) \ | |
2578 | if (LA1 != (TOKEN)) \ | |
2579 | goto failure; \ | |
2580 | else \ | |
2581 | match () | |
2582 | ||
2583 | #define expect_ident(IDENT) \ | |
2584 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2585 | match (); \ | |
2586 | else \ | |
2587 | goto failure | |
2588 | ||
2589 | *width = *height = -1; | |
2590 | if (data) | |
2591 | *data = NULL; | |
2592 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2593 | ||
2594 | /* Parse defines for width, height and hot-spots. */ | |
2595 | while (LA1 == '#') | |
2596 | { | |
2597 | match (); | |
2598 | expect_ident ("define"); | |
2599 | expect (XBM_TK_IDENT); | |
2600 | ||
431feaf6 | 2601 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2602 | { |
6ae141d6 PE |
2603 | char *q = strrchr (buffer, '_'); |
2604 | q = q ? q + 1 : buffer; | |
2605 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2606 | *width = value; |
6ae141d6 | 2607 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2608 | *height = value; |
2609 | } | |
2610 | expect (XBM_TK_NUMBER); | |
2611 | } | |
2612 | ||
f1f25b99 | 2613 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2614 | { |
ce959360 CY |
2615 | if (!inhibit_image_error) |
2616 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2617 | goto failure; |
2618 | } | |
4ef0d4d0 KS |
2619 | else if (data == NULL) |
2620 | goto success; | |
2621 | ||
2622 | /* Parse bits. Must start with `static'. */ | |
2623 | expect_ident ("static"); | |
2624 | if (LA1 == XBM_TK_IDENT) | |
2625 | { | |
2626 | if (strcmp (buffer, "unsigned") == 0) | |
2627 | { | |
2628 | match (); | |
2629 | expect_ident ("char"); | |
2630 | } | |
2631 | else if (strcmp (buffer, "short") == 0) | |
2632 | { | |
2633 | match (); | |
2634 | v10 = 1; | |
2635 | if (*width % 16 && *width % 16 < 9) | |
2636 | padding_p = 1; | |
2637 | } | |
2638 | else if (strcmp (buffer, "char") == 0) | |
2639 | match (); | |
2640 | else | |
2641 | goto failure; | |
2642 | } | |
2643 | else | |
2644 | goto failure; | |
2645 | ||
2646 | expect (XBM_TK_IDENT); | |
2647 | expect ('['); | |
2648 | expect (']'); | |
2649 | expect ('='); | |
2650 | expect ('{'); | |
2651 | ||
ca4aa935 PE |
2652 | if (! x_check_image_size (0, *width, *height)) |
2653 | { | |
2654 | if (!inhibit_image_error) | |
2655 | image_error ("Image too large (%dx%d)", | |
2656 | make_number (*width), make_number (*height)); | |
2657 | goto failure; | |
2658 | } | |
4ef0d4d0 KS |
2659 | bytes_per_line = (*width + 7) / 8 + padding_p; |
2660 | nbytes = bytes_per_line * *height; | |
23f86fce | 2661 | p = *data = xmalloc (nbytes); |
4ef0d4d0 KS |
2662 | |
2663 | if (v10) | |
2664 | { | |
2665 | for (i = 0; i < nbytes; i += 2) | |
2666 | { | |
2667 | int val = value; | |
2668 | expect (XBM_TK_NUMBER); | |
2669 | ||
2670 | *p++ = XBM_BIT_SHUFFLE (val); | |
2671 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2672 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2673 | ||
2674 | if (LA1 == ',' || LA1 == '}') | |
2675 | match (); | |
2676 | else | |
2677 | goto failure; | |
2678 | } | |
2679 | } | |
2680 | else | |
2681 | { | |
2682 | for (i = 0; i < nbytes; ++i) | |
2683 | { | |
2684 | int val = value; | |
2685 | expect (XBM_TK_NUMBER); | |
2686 | ||
2687 | *p++ = XBM_BIT_SHUFFLE (val); | |
2688 | ||
2689 | if (LA1 == ',' || LA1 == '}') | |
2690 | match (); | |
2691 | else | |
2692 | goto failure; | |
2693 | } | |
2694 | } | |
2695 | ||
2696 | success: | |
2697 | return 1; | |
2698 | ||
2699 | failure: | |
2700 | ||
2701 | if (data && *data) | |
2702 | { | |
2703 | xfree (*data); | |
2704 | *data = NULL; | |
2705 | } | |
2706 | return 0; | |
2707 | ||
2708 | #undef match | |
2709 | #undef expect | |
2710 | #undef expect_ident | |
2711 | } | |
2712 | ||
2713 | ||
2714 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
578098f3 | 2715 | CONTENTS. END is the end of the buffer. Value is true if |
4ef0d4d0 KS |
2716 | successful. */ |
2717 | ||
578098f3 | 2718 | static bool |
d3da34e0 JB |
2719 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2720 | unsigned char *end) | |
4ef0d4d0 | 2721 | { |
578098f3 | 2722 | bool rc; |
b8dc29e9 | 2723 | char *data; |
578098f3 | 2724 | bool success_p = 0; |
4ef0d4d0 | 2725 | |
ce959360 CY |
2726 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2727 | &data, 0); | |
4ef0d4d0 KS |
2728 | if (rc) |
2729 | { | |
2730 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2731 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2732 | bool non_default_colors = 0; |
4ef0d4d0 KS |
2733 | Lisp_Object value; |
2734 | ||
a54e2c05 | 2735 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
2736 | |
2737 | /* Get foreground and background colors, maybe allocate colors. */ | |
2738 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2739 | if (!NILP (value)) | |
2740 | { | |
2741 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2742 | non_default_colors = 1; | |
2743 | } | |
2744 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2745 | if (!NILP (value)) | |
2746 | { | |
2747 | background = x_alloc_image_color (f, img, value, background); | |
2748 | img->background = background; | |
2749 | img->background_valid = 1; | |
2750 | non_default_colors = 1; | |
2751 | } | |
2752 | ||
1f026899 | 2753 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2754 | foreground, background, |
2755 | non_default_colors); | |
2756 | xfree (data); | |
2757 | ||
2758 | if (img->pixmap == NO_PIXMAP) | |
2759 | { | |
2760 | x_clear_image (f, img); | |
2761 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2762 | } | |
2763 | else | |
2764 | success_p = 1; | |
2765 | } | |
2766 | else | |
2767 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2768 | ||
2769 | return success_p; | |
2770 | } | |
2771 | ||
2772 | ||
578098f3 | 2773 | /* Value is true if DATA looks like an in-memory XBM file. */ |
4ef0d4d0 | 2774 | |
578098f3 | 2775 | static bool |
d3da34e0 | 2776 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2777 | { |
2778 | int w, h; | |
2779 | return (STRINGP (data) | |
f1f25b99 | 2780 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2781 | (SDATA (data) + SBYTES (data)), |
2782 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2783 | } |
2784 | ||
2785 | ||
2786 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
578098f3 | 2787 | true if successful. */ |
4ef0d4d0 | 2788 | |
578098f3 | 2789 | static bool |
d3da34e0 | 2790 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 2791 | { |
578098f3 | 2792 | bool success_p = 0; |
4ef0d4d0 KS |
2793 | Lisp_Object file_name; |
2794 | ||
a54e2c05 | 2795 | eassert (xbm_image_p (img->spec)); |
4ef0d4d0 KS |
2796 | |
2797 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2798 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2799 | if (STRINGP (file_name)) | |
2800 | { | |
2801 | Lisp_Object file; | |
2802 | unsigned char *contents; | |
dd52fcea | 2803 | ptrdiff_t size; |
4ef0d4d0 KS |
2804 | |
2805 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2806 | if (!STRINGP (file)) |
2807 | { | |
2808 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2809 | return 0; |
2810 | } | |
2811 | ||
42a5b22f | 2812 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2813 | if (contents == NULL) |
2814 | { | |
2815 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2816 | return 0; |
2817 | } | |
2818 | ||
2819 | success_p = xbm_load_image (f, img, contents, contents + size); | |
d5a19415 | 2820 | xfree (contents); |
4ef0d4d0 KS |
2821 | } |
2822 | else | |
2823 | { | |
2824 | struct image_keyword fmt[XBM_LAST]; | |
2825 | Lisp_Object data; | |
2826 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2827 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2828 | bool non_default_colors = 0; |
4ef0d4d0 | 2829 | char *bits; |
578098f3 PE |
2830 | bool parsed_p; |
2831 | bool in_memory_file_p = 0; | |
4ef0d4d0 KS |
2832 | |
2833 | /* See if data looks like an in-memory XBM file. */ | |
2834 | data = image_spec_value (img->spec, QCdata, NULL); | |
2835 | in_memory_file_p = xbm_file_p (data); | |
2836 | ||
2837 | /* Parse the image specification. */ | |
72af86bd | 2838 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2839 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
a54e2c05 | 2840 | eassert (parsed_p); |
4ef0d4d0 KS |
2841 | |
2842 | /* Get specified width, and height. */ | |
2843 | if (!in_memory_file_p) | |
2844 | { | |
2845 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2846 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
a54e2c05 | 2847 | eassert (img->width > 0 && img->height > 0); |
ca4aa935 PE |
2848 | if (!check_image_size (f, img->width, img->height)) |
2849 | { | |
2850 | image_error ("Invalid image size (see `max-image-size')", | |
2851 | Qnil, Qnil); | |
2852 | return 0; | |
2853 | } | |
4ef0d4d0 KS |
2854 | } |
2855 | ||
2856 | /* Get foreground and background colors, maybe allocate colors. */ | |
2857 | if (fmt[XBM_FOREGROUND].count | |
2858 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2859 | { | |
2860 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2861 | foreground); | |
2862 | non_default_colors = 1; | |
2863 | } | |
2864 | ||
2865 | if (fmt[XBM_BACKGROUND].count | |
2866 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2867 | { | |
2868 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2869 | background); | |
2870 | non_default_colors = 1; | |
2871 | } | |
2872 | ||
2873 | if (in_memory_file_p) | |
2874 | success_p = xbm_load_image (f, img, SDATA (data), | |
2875 | (SDATA (data) | |
2876 | + SBYTES (data))); | |
2877 | else | |
2878 | { | |
2879 | if (VECTORP (data)) | |
2880 | { | |
2881 | int i; | |
2882 | char *p; | |
2883 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2884 | ||
38182d90 | 2885 | p = bits = alloca (nbytes * img->height); |
4ef0d4d0 KS |
2886 | for (i = 0; i < img->height; ++i, p += nbytes) |
2887 | { | |
28be1ada | 2888 | Lisp_Object line = AREF (data, i); |
4ef0d4d0 | 2889 | if (STRINGP (line)) |
72af86bd | 2890 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2891 | else |
72af86bd | 2892 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2893 | } |
2894 | } | |
2895 | else if (STRINGP (data)) | |
42a5b22f | 2896 | bits = SSDATA (data); |
4ef0d4d0 | 2897 | else |
b8dc29e9 | 2898 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2899 | |
0fda9b75 | 2900 | #ifdef HAVE_NTGUI |
44b1dc2e JR |
2901 | { |
2902 | char *invertedBits; | |
2903 | int nbytes, i; | |
2904 | /* Windows mono bitmaps are reversed compared with X. */ | |
2905 | invertedBits = bits; | |
285d07e2 | 2906 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2907 | * img->height; |
38182d90 | 2908 | bits = alloca (nbytes); |
44b1dc2e JR |
2909 | for (i = 0; i < nbytes; i++) |
2910 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2911 | } | |
2912 | #endif | |
4ef0d4d0 KS |
2913 | /* Create the pixmap. */ |
2914 | ||
ca4aa935 PE |
2915 | if (x_check_image_size (0, img->width, img->height)) |
2916 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2917 | foreground, background, | |
2918 | non_default_colors); | |
2919 | else | |
2920 | img->pixmap = NO_PIXMAP; | |
2921 | ||
4ef0d4d0 KS |
2922 | if (img->pixmap) |
2923 | success_p = 1; | |
2924 | else | |
2925 | { | |
2926 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2927 | img->spec, Qnil); | |
2928 | x_clear_image (f, img); | |
2929 | } | |
2930 | } | |
2931 | } | |
2932 | ||
2933 | return success_p; | |
2934 | } | |
2935 | ||
2936 | ||
2937 | \f | |
2938 | /*********************************************************************** | |
2939 | XPM images | |
2940 | ***********************************************************************/ | |
2941 | ||
9e2a2647 | 2942 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2943 | |
578098f3 PE |
2944 | static bool xpm_image_p (Lisp_Object object); |
2945 | static bool xpm_load (struct frame *f, struct image *img); | |
4ef0d4d0 | 2946 | |
9e2a2647 | 2947 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
2948 | |
2949 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
2950 | #ifdef HAVE_NTGUI |
2951 | /* Indicate to xpm.h that we don't have Xlib. */ | |
2952 | #define FOR_MSW | |
2953 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 2954 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
2955 | #define XColor xpm_XColor |
2956 | #define XImage xpm_XImage | |
279d3293 | 2957 | #define Display xpm_Display |
4ef0d4d0 KS |
2958 | #define PIXEL_ALREADY_TYPEDEFED |
2959 | #include "X11/xpm.h" | |
2960 | #undef FOR_MSW | |
2961 | #undef XColor | |
2962 | #undef XImage | |
279d3293 | 2963 | #undef Display |
4ef0d4d0 KS |
2964 | #undef PIXEL_ALREADY_TYPEDEFED |
2965 | #else | |
2966 | #include "X11/xpm.h" | |
2967 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 2968 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 2969 | |
9e2a2647 | 2970 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
2971 | /* The symbol `xpm' identifying XPM-format images. */ |
2972 | ||
955cbe7b | 2973 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
2974 | |
2975 | /* Indices of image specification fields in xpm_format, below. */ | |
2976 | ||
2977 | enum xpm_keyword_index | |
2978 | { | |
2979 | XPM_TYPE, | |
2980 | XPM_FILE, | |
2981 | XPM_DATA, | |
2982 | XPM_ASCENT, | |
2983 | XPM_MARGIN, | |
2984 | XPM_RELIEF, | |
2985 | XPM_ALGORITHM, | |
2986 | XPM_HEURISTIC_MASK, | |
2987 | XPM_MASK, | |
2988 | XPM_COLOR_SYMBOLS, | |
2989 | XPM_BACKGROUND, | |
2990 | XPM_LAST | |
2991 | }; | |
2992 | ||
2993 | /* Vector of image_keyword structures describing the format | |
2994 | of valid XPM image specifications. */ | |
2995 | ||
91433552 | 2996 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
2997 | { |
2998 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2999 | {":file", IMAGE_STRING_VALUE, 0}, | |
3000 | {":data", IMAGE_STRING_VALUE, 0}, | |
3001 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 3002 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
3003 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
3004 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3005 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3006 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3007 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3008 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3009 | }; | |
3010 | ||
a9e7a9d5 | 3011 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 3012 | static bool init_xpm_functions (void); |
bb4d86b4 CY |
3013 | #else |
3014 | #define init_xpm_functions NULL | |
3015 | #endif | |
3016 | ||
4ef0d4d0 KS |
3017 | /* Structure describing the image type XPM. */ |
3018 | ||
3019 | static struct image_type xpm_type = | |
3020 | { | |
3021 | &Qxpm, | |
3022 | xpm_image_p, | |
3023 | xpm_load, | |
3024 | x_clear_image, | |
bb4d86b4 | 3025 | init_xpm_functions, |
4ef0d4d0 KS |
3026 | NULL |
3027 | }; | |
3028 | ||
3029 | #ifdef HAVE_X_WINDOWS | |
3030 | ||
3031 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3032 | functions for allocating image colors. Our own functions handle | |
3033 | color allocation failures more gracefully than the ones on the XPM | |
3034 | lib. */ | |
3035 | ||
3036 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3037 | #define ALLOC_XPM_COLORS | |
3038 | #endif | |
3039 | #endif /* HAVE_X_WINDOWS */ | |
3040 | ||
3041 | #ifdef ALLOC_XPM_COLORS | |
3042 | ||
f57e2426 J |
3043 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, |
3044 | XColor *, int); | |
4ef0d4d0 KS |
3045 | |
3046 | /* An entry in a hash table used to cache color definitions of named | |
3047 | colors. This cache is necessary to speed up XPM image loading in | |
3048 | case we do color allocations ourselves. Without it, we would need | |
3049 | a call to XParseColor per pixel in the image. */ | |
3050 | ||
3051 | struct xpm_cached_color | |
3052 | { | |
3053 | /* Next in collision chain. */ | |
3054 | struct xpm_cached_color *next; | |
3055 | ||
3056 | /* Color definition (RGB and pixel color). */ | |
3057 | XColor color; | |
3058 | ||
3059 | /* Color name. */ | |
3060 | char name[1]; | |
3061 | }; | |
3062 | ||
3063 | /* The hash table used for the color cache, and its bucket vector | |
3064 | size. */ | |
3065 | ||
3066 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3067 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3068 | |
3069 | /* Initialize the color cache. */ | |
3070 | ||
3071 | static void | |
d3da34e0 | 3072 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3073 | { |
3074 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
23f86fce | 3075 | xpm_color_cache = xzalloc (nbytes); |
4ef0d4d0 KS |
3076 | init_color_table (); |
3077 | ||
3078 | if (attrs->valuemask & XpmColorSymbols) | |
3079 | { | |
3080 | int i; | |
3081 | XColor color; | |
3082 | ||
3083 | for (i = 0; i < attrs->numsymbols; ++i) | |
3084 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3085 | attrs->colorsymbols[i].value, &color)) | |
3086 | { | |
3087 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3088 | color.blue); | |
3089 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3090 | } | |
3091 | } | |
3092 | } | |
3093 | ||
3094 | /* Free the color cache. */ | |
3095 | ||
3096 | static void | |
d3da34e0 | 3097 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3098 | { |
3099 | struct xpm_cached_color *p, *next; | |
3100 | int i; | |
3101 | ||
3102 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3103 | for (p = xpm_color_cache[i]; p; p = next) | |
3104 | { | |
3105 | next = p->next; | |
3106 | xfree (p); | |
3107 | } | |
3108 | ||
3109 | xfree (xpm_color_cache); | |
3110 | xpm_color_cache = NULL; | |
3111 | free_color_table (); | |
3112 | } | |
3113 | ||
3114 | /* Return the bucket index for color named COLOR_NAME in the color | |
3115 | cache. */ | |
3116 | ||
3117 | static int | |
d3da34e0 | 3118 | xpm_color_bucket (char *color_name) |
4ef0d4d0 | 3119 | { |
3f791afe PE |
3120 | EMACS_UINT hash = hash_string (color_name, strlen (color_name)); |
3121 | return hash % XPM_COLOR_CACHE_BUCKETS; | |
4ef0d4d0 KS |
3122 | } |
3123 | ||
3124 | ||
3125 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3126 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3127 | entry added. */ | |
3128 | ||
3129 | static struct xpm_cached_color * | |
d3da34e0 | 3130 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3131 | { |
3132 | size_t nbytes; | |
3133 | struct xpm_cached_color *p; | |
3134 | ||
3135 | if (bucket < 0) | |
3136 | bucket = xpm_color_bucket (color_name); | |
3137 | ||
3f791afe | 3138 | nbytes = offsetof (struct xpm_cached_color, name) + strlen (color_name) + 1; |
23f86fce | 3139 | p = xmalloc (nbytes); |
4ef0d4d0 KS |
3140 | strcpy (p->name, color_name); |
3141 | p->color = *color; | |
3142 | p->next = xpm_color_cache[bucket]; | |
3143 | xpm_color_cache[bucket] = p; | |
3144 | return p; | |
3145 | } | |
3146 | ||
3147 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3148 | return the cached definition in *COLOR. Otherwise, make a new | |
578098f3 | 3149 | entry in the cache and allocate the color. Value is false if color |
4ef0d4d0 KS |
3150 | allocation failed. */ |
3151 | ||
578098f3 | 3152 | static bool |
d3da34e0 | 3153 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3154 | { |
3155 | struct xpm_cached_color *p; | |
3156 | int h = xpm_color_bucket (color_name); | |
3157 | ||
3158 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3159 | if (strcmp (p->name, color_name) == 0) | |
3160 | break; | |
3161 | ||
3162 | if (p != NULL) | |
3163 | *color = p->color; | |
3164 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3165 | color_name, color)) | |
3166 | { | |
3167 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3168 | color->blue); | |
3169 | p = xpm_cache_color (f, color_name, color, h); | |
3170 | } | |
3171 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3172 | with transparency, and it's useful. */ | |
3173 | else if (strcmp ("opaque", color_name) == 0) | |
3174 | { | |
72af86bd | 3175 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3176 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3177 | p = xpm_cache_color (f, color_name, color, h); | |
3178 | } | |
3179 | ||
3180 | return p != NULL; | |
3181 | } | |
3182 | ||
3183 | ||
3184 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3185 | CLOSURE is a pointer to the frame on which we allocate the | |
3186 | color. Return in *COLOR the allocated color. Value is non-zero | |
3187 | if successful. */ | |
3188 | ||
3189 | static int | |
d3da34e0 JB |
3190 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3191 | void *closure) | |
4ef0d4d0 KS |
3192 | { |
3193 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3194 | } | |
3195 | ||
3196 | ||
3197 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3198 | is a pointer to the frame on which we allocate the color. Value is | |
3199 | non-zero if successful. */ | |
3200 | ||
3201 | static int | |
d3da34e0 | 3202 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3203 | { |
3204 | return 1; | |
3205 | } | |
3206 | ||
3207 | #endif /* ALLOC_XPM_COLORS */ | |
3208 | ||
3209 | ||
0fda9b75 | 3210 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
3211 | |
3212 | /* XPM library details. */ | |
3213 | ||
14beddf4 CY |
3214 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3215 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3216 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3217 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3218 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3219 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3220 | |
578098f3 | 3221 | static bool |
d07ff9db | 3222 | init_xpm_functions (void) |
4ef0d4d0 KS |
3223 | { |
3224 | HMODULE library; | |
3225 | ||
d07ff9db | 3226 | if (!(library = w32_delayed_load (Qxpm))) |
4ef0d4d0 KS |
3227 | return 0; |
3228 | ||
3229 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3230 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3231 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3232 | LOAD_IMGLIB_FN (library, XImageFree); | |
3233 | return 1; | |
3234 | } | |
3235 | ||
0fda9b75 | 3236 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 3237 | |
a9e7a9d5 | 3238 | #if defined HAVE_NTGUI && !defined WINDOWSNT |
0fda9b75 DC |
3239 | /* Glue for code below */ |
3240 | #define fn_XpmReadFileToImage XpmReadFileToImage | |
3241 | #define fn_XpmCreateImageFromBuffer XpmCreateImageFromBuffer | |
3242 | #define fn_XImageFree XImageFree | |
3243 | #define fn_XpmFreeAttributes XpmFreeAttributes | |
2ae3a8a7 | 3244 | #endif /* HAVE_NTGUI && !WINDOWSNT */ |
4ef0d4d0 | 3245 | |
578098f3 | 3246 | /* Value is true if COLOR_SYMBOLS is a valid color symbols list |
4ef0d4d0 KS |
3247 | for XPM images. Such a list must consist of conses whose car and |
3248 | cdr are strings. */ | |
3249 | ||
578098f3 | 3250 | static bool |
d3da34e0 | 3251 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3252 | { |
3253 | while (CONSP (color_symbols)) | |
3254 | { | |
3255 | Lisp_Object sym = XCAR (color_symbols); | |
3256 | if (!CONSP (sym) | |
3257 | || !STRINGP (XCAR (sym)) | |
3258 | || !STRINGP (XCDR (sym))) | |
3259 | break; | |
3260 | color_symbols = XCDR (color_symbols); | |
3261 | } | |
3262 | ||
3263 | return NILP (color_symbols); | |
3264 | } | |
3265 | ||
3266 | ||
578098f3 | 3267 | /* Value is true if OBJECT is a valid XPM image specification. */ |
4ef0d4d0 | 3268 | |
578098f3 | 3269 | static bool |
d3da34e0 | 3270 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3271 | { |
3272 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3273 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3274 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3275 | /* Either `:file' or `:data' must be present. */ | |
3276 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3277 | /* Either no `:color-symbols' or it's a list of conses | |
3278 | whose car and cdr are strings. */ | |
3279 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3280 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3281 | } | |
3282 | ||
9e2a2647 | 3283 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3284 | |
cd44d2eb | 3285 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
0766b489 | 3286 | ptrdiff_t |
ef1b0ba7 | 3287 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3288 | { |
3289 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 PE |
3290 | ptrdiff_t id; |
3291 | int rc; | |
786a43d6 CY |
3292 | XpmAttributes attrs; |
3293 | Pixmap bitmap, mask; | |
3294 | ||
72af86bd | 3295 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3296 | |
54188d8f CY |
3297 | attrs.visual = FRAME_X_VISUAL (f); |
3298 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3299 | attrs.valuemask |= XpmVisual; | |
3300 | attrs.valuemask |= XpmColormap; | |
3301 | ||
786a43d6 | 3302 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3303 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3304 | if (rc != XpmSuccess) |
fe45ad15 CY |
3305 | { |
3306 | XpmFreeAttributes (&attrs); | |
3307 | return -1; | |
3308 | } | |
786a43d6 CY |
3309 | |
3310 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3311 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3312 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3313 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3314 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3315 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3316 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3317 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3318 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3319 | ||
3320 | XpmFreeAttributes (&attrs); | |
3321 | return id; | |
3322 | } | |
0d876a14 | 3323 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3324 | |
4ef0d4d0 | 3325 | /* Load image IMG which will be displayed on frame F. Value is |
578098f3 | 3326 | true if successful. */ |
4ef0d4d0 | 3327 | |
ea1aaa6f ST |
3328 | #ifdef HAVE_XPM |
3329 | ||
578098f3 | 3330 | static bool |
d3da34e0 | 3331 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3332 | { |
3333 | int rc; | |
3334 | XpmAttributes attrs; | |
3335 | Lisp_Object specified_file, color_symbols; | |
3336 | #ifdef HAVE_NTGUI | |
3337 | HDC hdc; | |
3338 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3339 | #endif /* HAVE_NTGUI */ | |
3340 | ||
3341 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3342 | close colors. Return colors allocated. */ | |
72af86bd | 3343 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3344 | |
3345 | #ifndef HAVE_NTGUI | |
3346 | attrs.visual = FRAME_X_VISUAL (f); | |
3347 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3348 | attrs.valuemask |= XpmVisual; | |
3349 | attrs.valuemask |= XpmColormap; | |
3350 | #endif /* HAVE_NTGUI */ | |
3351 | ||
3352 | #ifdef ALLOC_XPM_COLORS | |
3353 | /* Allocate colors with our own functions which handle | |
3354 | failing color allocation more gracefully. */ | |
3355 | attrs.color_closure = f; | |
3356 | attrs.alloc_color = xpm_alloc_color; | |
3357 | attrs.free_colors = xpm_free_colors; | |
3358 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3359 | #else /* not ALLOC_XPM_COLORS */ | |
3360 | /* Let the XPM lib allocate colors. */ | |
3361 | attrs.valuemask |= XpmReturnAllocPixels; | |
3362 | #ifdef XpmAllocCloseColors | |
3363 | attrs.alloc_close_colors = 1; | |
3364 | attrs.valuemask |= XpmAllocCloseColors; | |
3365 | #else /* not XpmAllocCloseColors */ | |
3366 | attrs.closeness = 600; | |
3367 | attrs.valuemask |= XpmCloseness; | |
3368 | #endif /* not XpmAllocCloseColors */ | |
3369 | #endif /* ALLOC_XPM_COLORS */ | |
3370 | ||
3371 | /* If image specification contains symbolic color definitions, add | |
3372 | these to `attrs'. */ | |
3373 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3374 | if (CONSP (color_symbols)) | |
3375 | { | |
3376 | Lisp_Object tail; | |
3377 | XpmColorSymbol *xpm_syms; | |
3378 | int i, size; | |
3379 | ||
3380 | attrs.valuemask |= XpmColorSymbols; | |
3381 | ||
3382 | /* Count number of symbols. */ | |
3383 | attrs.numsymbols = 0; | |
3384 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3385 | ++attrs.numsymbols; | |
3386 | ||
3387 | /* Allocate an XpmColorSymbol array. */ | |
3388 | size = attrs.numsymbols * sizeof *xpm_syms; | |
38182d90 | 3389 | xpm_syms = alloca (size); |
72af86bd | 3390 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3391 | attrs.colorsymbols = xpm_syms; |
3392 | ||
3393 | /* Fill the color symbol array. */ | |
3394 | for (tail = color_symbols, i = 0; | |
3395 | CONSP (tail); | |
3396 | ++i, tail = XCDR (tail)) | |
3397 | { | |
7574650a AS |
3398 | Lisp_Object name; |
3399 | Lisp_Object color; | |
e22cffbc | 3400 | char *empty_string = (char *) ""; |
7574650a AS |
3401 | |
3402 | if (!CONSP (XCAR (tail))) | |
3403 | { | |
e22cffbc PE |
3404 | xpm_syms[i].name = empty_string; |
3405 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3406 | continue; |
3407 | } | |
3408 | name = XCAR (XCAR (tail)); | |
3409 | color = XCDR (XCAR (tail)); | |
3410 | if (STRINGP (name)) | |
3411 | { | |
38182d90 | 3412 | xpm_syms[i].name = alloca (SCHARS (name) + 1); |
42a5b22f | 3413 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3414 | } |
3415 | else | |
e22cffbc | 3416 | xpm_syms[i].name = empty_string; |
7574650a AS |
3417 | if (STRINGP (color)) |
3418 | { | |
38182d90 | 3419 | xpm_syms[i].value = alloca (SCHARS (color) + 1); |
42a5b22f | 3420 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3421 | } |
3422 | else | |
e22cffbc | 3423 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3424 | } |
3425 | } | |
3426 | ||
3427 | /* Create a pixmap for the image, either from a file, or from a | |
3428 | string buffer containing data in the same format as an XPM file. */ | |
3429 | #ifdef ALLOC_XPM_COLORS | |
3430 | xpm_init_color_cache (f, &attrs); | |
3431 | #endif | |
3432 | ||
3433 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3434 | ||
3435 | #ifdef HAVE_NTGUI | |
3436 | { | |
3437 | HDC frame_dc = get_frame_dc (f); | |
3438 | hdc = CreateCompatibleDC (frame_dc); | |
3439 | release_frame_dc (f, frame_dc); | |
3440 | } | |
3441 | #endif /* HAVE_NTGUI */ | |
3442 | ||
3443 | if (STRINGP (specified_file)) | |
3444 | { | |
3445 | Lisp_Object file = x_find_image_file (specified_file); | |
3446 | if (!STRINGP (file)) | |
3447 | { | |
3448 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3449 | #ifdef ALLOC_XPM_COLORS |
3450 | xpm_free_color_cache (); | |
3451 | #endif | |
4ef0d4d0 KS |
3452 | return 0; |
3453 | } | |
3454 | ||
3455 | #ifdef HAVE_NTGUI | |
3456 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3457 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3458 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3459 | &xpm_image, &xpm_mask, | |
3460 | &attrs); | |
3461 | #else | |
3462 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3463 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3464 | &attrs); |
3465 | #endif /* HAVE_NTGUI */ | |
3466 | } | |
3467 | else | |
3468 | { | |
3469 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3470 | if (!STRINGP (buffer)) |
3471 | { | |
3472 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3473 | #ifdef ALLOC_XPM_COLORS | |
3474 | xpm_free_color_cache (); | |
3475 | #endif | |
3476 | return 0; | |
3477 | } | |
4ef0d4d0 KS |
3478 | #ifdef HAVE_NTGUI |
3479 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3480 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3481 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3482 | &xpm_image, &xpm_mask, | |
3483 | &attrs); | |
3484 | #else | |
3485 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3486 | SSDATA (buffer), |
4ef0d4d0 KS |
3487 | &img->pixmap, &img->mask, |
3488 | &attrs); | |
3489 | #endif /* HAVE_NTGUI */ | |
3490 | } | |
3491 | ||
3492 | if (rc == XpmSuccess) | |
3493 | { | |
3494 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3495 | img->colors = colors_in_color_table (&img->ncolors); | |
3496 | #else /* not ALLOC_XPM_COLORS */ | |
3497 | int i; | |
3498 | ||
3499 | #ifdef HAVE_NTGUI | |
3500 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3501 | plus some duplicate attributes. */ | |
3502 | if (xpm_image && xpm_image->bitmap) | |
3503 | { | |
3504 | img->pixmap = xpm_image->bitmap; | |
3505 | /* XImageFree in libXpm frees XImage struct without destroying | |
3506 | the bitmap, which is what we want. */ | |
3507 | fn_XImageFree (xpm_image); | |
3508 | } | |
3509 | if (xpm_mask && xpm_mask->bitmap) | |
3510 | { | |
3511 | /* The mask appears to be inverted compared with what we expect. | |
3512 | TODO: invert our expectations. See other places where we | |
3513 | have to invert bits because our idea of masks is backwards. */ | |
3514 | HGDIOBJ old_obj; | |
3515 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3516 | ||
3517 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3518 | SelectObject (hdc, old_obj); | |
3519 | ||
3520 | img->mask = xpm_mask->bitmap; | |
3521 | fn_XImageFree (xpm_mask); | |
3522 | DeleteDC (hdc); | |
3523 | } | |
3524 | ||
3525 | DeleteDC (hdc); | |
3526 | #endif /* HAVE_NTGUI */ | |
3527 | ||
3528 | /* Remember allocated colors. */ | |
0065d054 | 3529 | img->colors = xnmalloc (attrs.nalloc_pixels, sizeof *img->colors); |
ddff3151 | 3530 | img->ncolors = attrs.nalloc_pixels; |
4ef0d4d0 KS |
3531 | for (i = 0; i < attrs.nalloc_pixels; ++i) |
3532 | { | |
3533 | img->colors[i] = attrs.alloc_pixels[i]; | |
3534 | #ifdef DEBUG_X_COLORS | |
3535 | register_color (img->colors[i]); | |
3536 | #endif | |
3537 | } | |
3538 | #endif /* not ALLOC_XPM_COLORS */ | |
3539 | ||
3540 | img->width = attrs.width; | |
3541 | img->height = attrs.height; | |
a54e2c05 | 3542 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
3543 | |
3544 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3545 | #ifdef HAVE_NTGUI | |
3546 | fn_XpmFreeAttributes (&attrs); | |
3547 | #else | |
3548 | XpmFreeAttributes (&attrs); | |
3549 | #endif /* HAVE_NTGUI */ | |
3550 | } | |
3551 | else | |
3552 | { | |
3553 | #ifdef HAVE_NTGUI | |
3554 | DeleteDC (hdc); | |
3555 | #endif /* HAVE_NTGUI */ | |
3556 | ||
3557 | switch (rc) | |
3558 | { | |
3559 | case XpmOpenFailed: | |
3560 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3561 | break; | |
3562 | ||
3563 | case XpmFileInvalid: | |
3564 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3565 | break; | |
3566 | ||
3567 | case XpmNoMemory: | |
3568 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3569 | break; | |
3570 | ||
3571 | case XpmColorFailed: | |
3572 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3573 | break; | |
3574 | ||
3575 | default: | |
3576 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3577 | break; | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | #ifdef ALLOC_XPM_COLORS | |
3582 | xpm_free_color_cache (); | |
3583 | #endif | |
3584 | return rc == XpmSuccess; | |
3585 | } | |
3586 | ||
3587 | #endif /* HAVE_XPM */ | |
3588 | ||
9e2a2647 | 3589 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3590 | |
9e2a2647 | 3591 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3592 | Only XPM version 3 (without any extensions) is supported. */ |
3593 | ||
f57e2426 J |
3594 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, |
3595 | int, Lisp_Object); | |
3596 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3597 | const unsigned char *, int); | |
f57e2426 J |
3598 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, |
3599 | int, Lisp_Object); | |
3600 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3601 | const unsigned char *, int); | |
ea1aaa6f ST |
3602 | |
3603 | /* Tokens returned from xpm_scan. */ | |
3604 | ||
3605 | enum xpm_token | |
3606 | { | |
3607 | XPM_TK_IDENT = 256, | |
3608 | XPM_TK_STRING, | |
3609 | XPM_TK_EOF | |
3610 | }; | |
3611 | ||
3612 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3613 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3614 | the end (exclusive) addresses of the data, respectively. Advance | |
3615 | *S while scanning. If token is either XPM_TK_IDENT or | |
3616 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3617 | length of the corresponding token, respectively. */ | |
3618 | ||
3619 | static int | |
3d608a86 J |
3620 | xpm_scan (const unsigned char **s, |
3621 | const unsigned char *end, | |
3622 | const unsigned char **beg, | |
74ca2eb3 | 3623 | ptrdiff_t *len) |
ea1aaa6f ST |
3624 | { |
3625 | int c; | |
3626 | ||
3627 | while (*s < end) | |
3628 | { | |
3629 | /* Skip white-space. */ | |
620f13b0 | 3630 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
9ecf6403 | 3631 | ; |
ea1aaa6f ST |
3632 | |
3633 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3634 | sb-dir-plus.xpm uses '+' in its identifier. */ |
620f13b0 | 3635 | if (c_isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3636 | { |
3637 | *beg = *s - 1; | |
2ff0845e | 3638 | while (*s < end |
620f13b0 PE |
3639 | && (c = **s, c_isalnum (c) |
3640 | || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3641 | ++*s; |
3642 | *len = *s - *beg; | |
3643 | return XPM_TK_IDENT; | |
3644 | } | |
ea1aaa6f | 3645 | else if (c == '"') |
9ecf6403 YM |
3646 | { |
3647 | *beg = *s; | |
3648 | while (*s < end && **s != '"') | |
3649 | ++*s; | |
3650 | *len = *s - *beg; | |
3651 | if (*s < end) | |
3652 | ++*s; | |
3653 | return XPM_TK_STRING; | |
3654 | } | |
ea1aaa6f | 3655 | else if (c == '/') |
9ecf6403 YM |
3656 | { |
3657 | if (*s < end && **s == '*') | |
3658 | { | |
3659 | /* C-style comment. */ | |
3660 | ++*s; | |
3661 | do | |
3662 | { | |
3663 | while (*s < end && *(*s)++ != '*') | |
3664 | ; | |
3665 | } | |
3666 | while (*s < end && **s != '/'); | |
3667 | if (*s < end) | |
3668 | ++*s; | |
3669 | } | |
3670 | else | |
3671 | return c; | |
3672 | } | |
ea1aaa6f | 3673 | else |
9ecf6403 | 3674 | return c; |
ea1aaa6f ST |
3675 | } |
3676 | ||
3677 | return XPM_TK_EOF; | |
3678 | } | |
3679 | ||
bbe6f2aa | 3680 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3681 | specifying the color of each pixel in XPM data. A value is either |
3682 | an integer that specifies a pixel color, Qt that specifies | |
3683 | transparency, or Qnil for the unspecified color. If the length of | |
3684 | the key string is one, a vector is used as a table. Otherwise, a | |
3685 | hash table is used. */ | |
3686 | ||
3687 | static Lisp_Object | |
3d608a86 J |
3688 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3689 | const unsigned char *, | |
3690 | int, | |
3691 | Lisp_Object), | |
3692 | Lisp_Object (**get_func) (Lisp_Object, | |
3693 | const unsigned char *, | |
3694 | int)) | |
ea1aaa6f ST |
3695 | { |
3696 | *put_func = xpm_put_color_table_v; | |
3697 | *get_func = xpm_get_color_table_v; | |
3698 | return Fmake_vector (make_number (256), Qnil); | |
3699 | } | |
3700 | ||
3701 | static void | |
3d608a86 J |
3702 | xpm_put_color_table_v (Lisp_Object color_table, |
3703 | const unsigned char *chars_start, | |
3704 | int chars_len, | |
3705 | Lisp_Object color) | |
ea1aaa6f | 3706 | { |
28be1ada | 3707 | ASET (color_table, *chars_start, color); |
ea1aaa6f ST |
3708 | } |
3709 | ||
3710 | static Lisp_Object | |
3d608a86 J |
3711 | xpm_get_color_table_v (Lisp_Object color_table, |
3712 | const unsigned char *chars_start, | |
3713 | int chars_len) | |
ea1aaa6f | 3714 | { |
28be1ada | 3715 | return AREF (color_table, *chars_start); |
ea1aaa6f ST |
3716 | } |
3717 | ||
3718 | static Lisp_Object | |
3d608a86 J |
3719 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3720 | const unsigned char *, | |
3721 | int, | |
3722 | Lisp_Object), | |
3723 | Lisp_Object (**get_func) (Lisp_Object, | |
3724 | const unsigned char *, | |
3725 | int)) | |
ea1aaa6f ST |
3726 | { |
3727 | *put_func = xpm_put_color_table_h; | |
3728 | *get_func = xpm_get_color_table_h; | |
4ab15c3e | 3729 | return make_hash_table (hashtest_equal, make_number (DEFAULT_HASH_SIZE), |
9ecf6403 YM |
3730 | make_float (DEFAULT_REHASH_SIZE), |
3731 | make_float (DEFAULT_REHASH_THRESHOLD), | |
a23c4171 | 3732 | Qnil); |
ea1aaa6f ST |
3733 | } |
3734 | ||
3735 | static void | |
3d608a86 J |
3736 | xpm_put_color_table_h (Lisp_Object color_table, |
3737 | const unsigned char *chars_start, | |
3738 | int chars_len, | |
3739 | Lisp_Object color) | |
ea1aaa6f ST |
3740 | { |
3741 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3742 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3743 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3744 | ||
3745 | hash_lookup (table, chars, &hash_code); | |
3746 | hash_put (table, chars, color, hash_code); | |
3747 | } | |
3748 | ||
3749 | static Lisp_Object | |
3d608a86 J |
3750 | xpm_get_color_table_h (Lisp_Object color_table, |
3751 | const unsigned char *chars_start, | |
3752 | int chars_len) | |
ea1aaa6f ST |
3753 | { |
3754 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
d3411f89 PE |
3755 | ptrdiff_t i = |
3756 | hash_lookup (table, make_unibyte_string (chars_start, chars_len), NULL); | |
ea1aaa6f ST |
3757 | |
3758 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3759 | } | |
3760 | ||
3761 | enum xpm_color_key { | |
3762 | XPM_COLOR_KEY_S, | |
3763 | XPM_COLOR_KEY_M, | |
3764 | XPM_COLOR_KEY_G4, | |
3765 | XPM_COLOR_KEY_G, | |
3766 | XPM_COLOR_KEY_C | |
3767 | }; | |
3768 | ||
46accb8f | 3769 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3770 | |
3771 | static int | |
3d608a86 | 3772 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3773 | { |
3774 | int i; | |
3775 | ||
3776 | for (i = 0; | |
3777 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3778 | i++) | |
3779 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3780 | return i; | |
3781 | return -1; | |
3782 | } | |
3783 | ||
578098f3 | 3784 | static bool |
3d608a86 J |
3785 | xpm_load_image (struct frame *f, |
3786 | struct image *img, | |
3787 | const unsigned char *contents, | |
3788 | const unsigned char *end) | |
ea1aaa6f | 3789 | { |
46accb8f | 3790 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3791 | unsigned char buffer[BUFSIZ]; |
3792 | int width, height, x, y; | |
3793 | int num_colors, chars_per_pixel; | |
74ca2eb3 PE |
3794 | ptrdiff_t len; |
3795 | int LA1; | |
46accb8f YM |
3796 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3797 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f | 3798 | Lisp_Object frame, color_symbols, color_table; |
578098f3 PE |
3799 | int best_key; |
3800 | bool have_mask = 0; | |
ea1aaa6f ST |
3801 | XImagePtr ximg = NULL, mask_img = NULL; |
3802 | ||
3803 | #define match() \ | |
3804 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3805 | ||
9ecf6403 YM |
3806 | #define expect(TOKEN) \ |
3807 | if (LA1 != (TOKEN)) \ | |
3808 | goto failure; \ | |
3809 | else \ | |
ea1aaa6f ST |
3810 | match () |
3811 | ||
9ecf6403 | 3812 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3813 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3814 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3815 | match (); \ | |
3816 | else \ | |
ea1aaa6f ST |
3817 | goto failure |
3818 | ||
3819 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3820 | goto failure; | |
3821 | s += 9; | |
ed3751c8 | 3822 | match (); |
ea1aaa6f ST |
3823 | expect_ident ("static"); |
3824 | expect_ident ("char"); | |
3825 | expect ('*'); | |
3826 | expect (XPM_TK_IDENT); | |
3827 | expect ('['); | |
3828 | expect (']'); | |
3829 | expect ('='); | |
3830 | expect ('{'); | |
3831 | expect (XPM_TK_STRING); | |
3832 | if (len >= BUFSIZ) | |
3833 | goto failure; | |
3834 | memcpy (buffer, beg, len); | |
3835 | buffer[len] = '\0'; | |
3836 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3837 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3838 | || width <= 0 || height <= 0 |
3839 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3840 | goto failure; | |
de297941 YM |
3841 | |
3842 | if (!check_image_size (f, width, height)) | |
3843 | { | |
10ea2b82 | 3844 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3845 | goto failure; |
3846 | } | |
3847 | ||
ca4aa935 PE |
3848 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
3849 | &ximg, &img->pixmap) | |
3850 | #ifndef HAVE_NS | |
3851 | || !x_create_x_image_and_pixmap (f, width, height, 1, | |
3852 | &mask_img, &img->mask) | |
3853 | #endif | |
3854 | ) | |
3855 | { | |
3856 | image_error ("Image too large", Qnil, Qnil); | |
3857 | goto failure; | |
3858 | } | |
3859 | ||
ea1aaa6f ST |
3860 | expect (','); |
3861 | ||
3862 | XSETFRAME (frame, f); | |
3863 | if (!NILP (Fxw_display_color_p (frame))) | |
3864 | best_key = XPM_COLOR_KEY_C; | |
3865 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3866 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3867 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3868 | else |
3869 | best_key = XPM_COLOR_KEY_M; | |
3870 | ||
3871 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3872 | if (chars_per_pixel == 1) | |
3873 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3874 | &get_color_table); |
ea1aaa6f ST |
3875 | else |
3876 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3877 | &get_color_table); |
ea1aaa6f ST |
3878 | |
3879 | while (num_colors-- > 0) | |
3880 | { | |
25a48bd0 | 3881 | char *color, *max_color; |
ea1aaa6f ST |
3882 | int key, next_key, max_key = 0; |
3883 | Lisp_Object symbol_color = Qnil, color_val; | |
3884 | XColor cdef; | |
3885 | ||
3886 | expect (XPM_TK_STRING); | |
3887 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3888 | goto failure; |
ea1aaa6f ST |
3889 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3890 | buffer[len - chars_per_pixel] = '\0'; | |
3891 | ||
3892 | str = strtok (buffer, " \t"); | |
3893 | if (str == NULL) | |
9ecf6403 | 3894 | goto failure; |
ea1aaa6f ST |
3895 | key = xpm_str_to_color_key (str); |
3896 | if (key < 0) | |
9ecf6403 | 3897 | goto failure; |
ea1aaa6f | 3898 | do |
9ecf6403 YM |
3899 | { |
3900 | color = strtok (NULL, " \t"); | |
3901 | if (color == NULL) | |
3902 | goto failure; | |
ea1aaa6f | 3903 | |
9db94f82 | 3904 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3905 | { |
3906 | next_key = xpm_str_to_color_key (str); | |
3907 | if (next_key >= 0) | |
3908 | break; | |
3909 | color[strlen (color)] = ' '; | |
3910 | } | |
ea1aaa6f | 3911 | |
9ecf6403 YM |
3912 | if (key == XPM_COLOR_KEY_S) |
3913 | { | |
3914 | if (NILP (symbol_color)) | |
3915 | symbol_color = build_string (color); | |
3916 | } | |
3917 | else if (max_key < key && key <= best_key) | |
3918 | { | |
3919 | max_key = key; | |
3920 | max_color = color; | |
3921 | } | |
3922 | key = next_key; | |
3923 | } | |
ea1aaa6f ST |
3924 | while (str); |
3925 | ||
3926 | color_val = Qnil; | |
3927 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3928 | { |
3929 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3930 | ||
3931 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3932 | { |
25a48bd0 | 3933 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 | 3934 | color_val = Qt; |
6045c4fd | 3935 | else if (x_defined_color (f, SSDATA (XCDR (specified_color)), |
9db94f82 YM |
3936 | &cdef, 0)) |
3937 | color_val = make_number (cdef.pixel); | |
3938 | } | |
9ecf6403 | 3939 | } |
ea1aaa6f | 3940 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3941 | { |
05131107 | 3942 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3943 | color_val = Qt; |
3944 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3945 | color_val = make_number (cdef.pixel); | |
3946 | } | |
ea1aaa6f | 3947 | if (!NILP (color_val)) |
9ecf6403 | 3948 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3949 | |
3950 | expect (','); | |
3951 | } | |
3952 | ||
ea1aaa6f ST |
3953 | for (y = 0; y < height; y++) |
3954 | { | |
3955 | expect (XPM_TK_STRING); | |
3956 | str = beg; | |
3957 | if (len < width * chars_per_pixel) | |
9ecf6403 | 3958 | goto failure; |
ea1aaa6f | 3959 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
3960 | { |
3961 | Lisp_Object color_val = | |
3962 | (*get_color_table) (color_table, str, chars_per_pixel); | |
3963 | ||
3964 | XPutPixel (ximg, x, y, | |
3965 | (INTEGERP (color_val) ? XINT (color_val) | |
3966 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 3967 | #ifndef HAVE_NS |
9ecf6403 YM |
3968 | XPutPixel (mask_img, x, y, |
3969 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
3970 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 3971 | #else |
ed3751c8 JB |
3972 | if (EQ (color_val, Qt)) |
3973 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 3974 | #endif |
9ecf6403 | 3975 | } |
ea1aaa6f | 3976 | if (y + 1 < height) |
9ecf6403 | 3977 | expect (','); |
ea1aaa6f ST |
3978 | } |
3979 | ||
3980 | img->width = width; | |
3981 | img->height = height; | |
3982 | ||
0b8ac842 YM |
3983 | /* Maybe fill in the background field while we have ximg handy. */ |
3984 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
3985 | IMAGE_BACKGROUND (img, f, ximg); | |
3986 | ||
ea1aaa6f ST |
3987 | x_put_x_image (f, ximg, img->pixmap, width, height); |
3988 | x_destroy_x_image (ximg); | |
edfda783 | 3989 | #ifndef HAVE_NS |
ea1aaa6f ST |
3990 | if (have_mask) |
3991 | { | |
9ecf6403 YM |
3992 | /* Fill in the background_transparent field while we have the |
3993 | mask handy. */ | |
3994 | image_background_transparent (img, f, mask_img); | |
3995 | ||
ea1aaa6f ST |
3996 | x_put_x_image (f, mask_img, img->mask, width, height); |
3997 | x_destroy_x_image (mask_img); | |
3998 | } | |
3999 | else | |
4000 | { | |
4001 | x_destroy_x_image (mask_img); | |
4002 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4003 | img->mask = NO_PIXMAP; | |
4004 | } | |
edfda783 | 4005 | #endif |
ea1aaa6f ST |
4006 | return 1; |
4007 | ||
4008 | failure: | |
4009 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
ea1aaa6f ST |
4010 | x_destroy_x_image (ximg); |
4011 | x_destroy_x_image (mask_img); | |
4012 | x_clear_image (f, img); | |
4013 | return 0; | |
4014 | ||
4015 | #undef match | |
4016 | #undef expect | |
4017 | #undef expect_ident | |
4018 | } | |
4019 | ||
578098f3 | 4020 | static bool |
3d608a86 J |
4021 | xpm_load (struct frame *f, |
4022 | struct image *img) | |
ea1aaa6f | 4023 | { |
578098f3 | 4024 | bool success_p = 0; |
ea1aaa6f ST |
4025 | Lisp_Object file_name; |
4026 | ||
4027 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4028 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4029 | if (STRINGP (file_name)) | |
4030 | { | |
4031 | Lisp_Object file; | |
4032 | unsigned char *contents; | |
dd52fcea | 4033 | ptrdiff_t size; |
ea1aaa6f ST |
4034 | |
4035 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4036 | if (!STRINGP (file)) |
9ecf6403 YM |
4037 | { |
4038 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4039 | return 0; |
4040 | } | |
ea1aaa6f | 4041 | |
6045c4fd | 4042 | contents = slurp_file (SSDATA (file), &size); |
ea1aaa6f | 4043 | if (contents == NULL) |
9ecf6403 YM |
4044 | { |
4045 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4046 | return 0; |
4047 | } | |
ea1aaa6f ST |
4048 | |
4049 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4050 | xfree (contents); | |
ea1aaa6f ST |
4051 | } |
4052 | else | |
4053 | { | |
4054 | Lisp_Object data; | |
4055 | ||
4056 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4057 | if (!STRINGP (data)) |
4058 | { | |
4059 | image_error ("Invalid image data `%s'", data, Qnil); | |
4060 | return 0; | |
4061 | } | |
ea1aaa6f | 4062 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4063 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4064 | } |
4065 | ||
4066 | return success_p; | |
4067 | } | |
4068 | ||
9e2a2647 | 4069 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4070 | |
ea1aaa6f | 4071 | |
4ef0d4d0 KS |
4072 | \f |
4073 | /*********************************************************************** | |
4074 | Color table | |
4075 | ***********************************************************************/ | |
4076 | ||
4077 | #ifdef COLOR_TABLE_SUPPORT | |
4078 | ||
4079 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4080 | ||
4081 | struct ct_color | |
4082 | { | |
4083 | int r, g, b; | |
4084 | unsigned long pixel; | |
4085 | ||
4086 | /* Next in color table collision list. */ | |
4087 | struct ct_color *next; | |
4088 | }; | |
4089 | ||
4090 | /* The bucket vector size to use. Must be prime. */ | |
4091 | ||
4092 | #define CT_SIZE 101 | |
4093 | ||
4094 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4095 | ||
4096 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4097 | ||
4098 | /* The color hash table. */ | |
4099 | ||
cd44d2eb | 4100 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4101 | |
4102 | /* Number of entries in the color table. */ | |
4103 | ||
cd44d2eb | 4104 | static int ct_colors_allocated; |
ddff3151 PE |
4105 | enum |
4106 | { | |
4107 | ct_colors_allocated_max = | |
4108 | min (INT_MAX, | |
4109 | min (PTRDIFF_MAX, SIZE_MAX) / sizeof (unsigned long)) | |
4110 | }; | |
4ef0d4d0 KS |
4111 | |
4112 | /* Initialize the color table. */ | |
4113 | ||
4114 | static void | |
d3da34e0 | 4115 | init_color_table (void) |
4ef0d4d0 KS |
4116 | { |
4117 | int size = CT_SIZE * sizeof (*ct_table); | |
23f86fce | 4118 | ct_table = xzalloc (size); |
4ef0d4d0 KS |
4119 | ct_colors_allocated = 0; |
4120 | } | |
4121 | ||
4122 | ||
4123 | /* Free memory associated with the color table. */ | |
4124 | ||
4125 | static void | |
d3da34e0 | 4126 | free_color_table (void) |
4ef0d4d0 KS |
4127 | { |
4128 | int i; | |
4129 | struct ct_color *p, *next; | |
4130 | ||
4131 | for (i = 0; i < CT_SIZE; ++i) | |
4132 | for (p = ct_table[i]; p; p = next) | |
4133 | { | |
4134 | next = p->next; | |
4135 | xfree (p); | |
4136 | } | |
4137 | ||
4138 | xfree (ct_table); | |
4139 | ct_table = NULL; | |
4140 | } | |
4141 | ||
4142 | ||
4143 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4144 | entry for that color already is in the color table, return the | |
4145 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4146 | G, B, and make an entry in the color table. */ | |
4147 | ||
4148 | static unsigned long | |
d3da34e0 | 4149 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4150 | { |
4151 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4152 | int i = hash % CT_SIZE; | |
4153 | struct ct_color *p; | |
4154 | Display_Info *dpyinfo; | |
4155 | ||
4156 | /* Handle TrueColor visuals specially, which improves performance by | |
4157 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4158 | a nop, and pixel colors specify RGB values directly. See also | |
4159 | the Xlib spec, chapter 3.1. */ | |
4160 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4161 | if (dpyinfo->red_bits > 0) | |
4162 | { | |
4163 | unsigned long pr, pg, pb; | |
4164 | ||
4165 | /* Apply gamma-correction like normal color allocation does. */ | |
4166 | if (f->gamma) | |
4167 | { | |
4168 | XColor color; | |
4169 | color.red = r, color.green = g, color.blue = b; | |
4170 | gamma_correct (f, &color); | |
4171 | r = color.red, g = color.green, b = color.blue; | |
4172 | } | |
4173 | ||
4174 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4175 | them to the right position in the pixel color. Note that the | |
4176 | original RGB values are 16-bit values, as usual in X. */ | |
4177 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4178 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4179 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4180 | ||
4181 | /* Assemble the pixel color. */ | |
4182 | return pr | pg | pb; | |
4183 | } | |
1f026899 | 4184 | |
4ef0d4d0 KS |
4185 | for (p = ct_table[i]; p; p = p->next) |
4186 | if (p->r == r && p->g == g && p->b == b) | |
4187 | break; | |
4188 | ||
4189 | if (p == NULL) | |
4190 | { | |
4191 | ||
4192 | #ifdef HAVE_X_WINDOWS | |
4193 | XColor color; | |
4194 | Colormap cmap; | |
578098f3 | 4195 | bool rc; |
ddff3151 PE |
4196 | #else |
4197 | COLORREF color; | |
4198 | #endif | |
4ef0d4d0 | 4199 | |
ddff3151 PE |
4200 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4201 | return FRAME_FOREGROUND_PIXEL (f); | |
4202 | ||
4203 | #ifdef HAVE_X_WINDOWS | |
4ef0d4d0 KS |
4204 | color.red = r; |
4205 | color.green = g; | |
4206 | color.blue = b; | |
4207 | ||
4208 | cmap = FRAME_X_COLORMAP (f); | |
4209 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4210 | if (rc) | |
4211 | { | |
4212 | ++ct_colors_allocated; | |
23f86fce | 4213 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4214 | p->r = r; |
4215 | p->g = g; | |
4216 | p->b = b; | |
4217 | p->pixel = color.pixel; | |
4218 | p->next = ct_table[i]; | |
4219 | ct_table[i] = p; | |
4220 | } | |
4221 | else | |
4222 | return FRAME_FOREGROUND_PIXEL (f); | |
4223 | ||
4224 | #else | |
4ef0d4d0 KS |
4225 | #ifdef HAVE_NTGUI |
4226 | color = PALETTERGB (r, g, b); | |
4227 | #else | |
4228 | color = RGB_TO_ULONG (r, g, b); | |
4229 | #endif /* HAVE_NTGUI */ | |
4230 | ++ct_colors_allocated; | |
23f86fce | 4231 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4232 | p->r = r; |
4233 | p->g = g; | |
4234 | p->b = b; | |
4235 | p->pixel = color; | |
4236 | p->next = ct_table[i]; | |
4237 | ct_table[i] = p; | |
4238 | #endif /* HAVE_X_WINDOWS */ | |
4239 | ||
4240 | } | |
4241 | ||
4242 | return p->pixel; | |
4243 | } | |
4244 | ||
4245 | ||
4246 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4247 | table. If not already present, allocate it. Value is PIXEL. */ | |
4248 | ||
4249 | static unsigned long | |
d3da34e0 | 4250 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4251 | { |
4252 | int i = pixel % CT_SIZE; | |
4253 | struct ct_color *p; | |
4254 | ||
4255 | for (p = ct_table[i]; p; p = p->next) | |
4256 | if (p->pixel == pixel) | |
4257 | break; | |
4258 | ||
4259 | if (p == NULL) | |
4260 | { | |
4261 | XColor color; | |
4262 | Colormap cmap; | |
578098f3 | 4263 | bool rc; |
4ef0d4d0 | 4264 | |
ddff3151 PE |
4265 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4266 | return FRAME_FOREGROUND_PIXEL (f); | |
4267 | ||
4ef0d4d0 KS |
4268 | #ifdef HAVE_X_WINDOWS |
4269 | cmap = FRAME_X_COLORMAP (f); | |
4270 | color.pixel = pixel; | |
4271 | x_query_color (f, &color); | |
4272 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4273 | #else | |
4d7e6e51 | 4274 | block_input (); |
4ef0d4d0 KS |
4275 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); |
4276 | color.pixel = pixel; | |
4277 | XQueryColor (NULL, cmap, &color); | |
4278 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4d7e6e51 | 4279 | unblock_input (); |
4ef0d4d0 KS |
4280 | #endif /* HAVE_X_WINDOWS */ |
4281 | ||
4282 | if (rc) | |
4283 | { | |
4284 | ++ct_colors_allocated; | |
4285 | ||
23f86fce | 4286 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4287 | p->r = color.red; |
4288 | p->g = color.green; | |
4289 | p->b = color.blue; | |
4290 | p->pixel = pixel; | |
4291 | p->next = ct_table[i]; | |
4292 | ct_table[i] = p; | |
4293 | } | |
4294 | else | |
4295 | return FRAME_FOREGROUND_PIXEL (f); | |
4296 | } | |
4297 | return p->pixel; | |
4298 | } | |
4299 | ||
4300 | ||
4301 | /* Value is a vector of all pixel colors contained in the color table, | |
4302 | allocated via xmalloc. Set *N to the number of colors. */ | |
4303 | ||
4304 | static unsigned long * | |
d3da34e0 | 4305 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4306 | { |
4307 | int i, j; | |
4308 | struct ct_color *p; | |
4309 | unsigned long *colors; | |
4310 | ||
4311 | if (ct_colors_allocated == 0) | |
4312 | { | |
4313 | *n = 0; | |
4314 | colors = NULL; | |
4315 | } | |
4316 | else | |
4317 | { | |
23f86fce | 4318 | colors = xmalloc (ct_colors_allocated * sizeof *colors); |
4ef0d4d0 KS |
4319 | *n = ct_colors_allocated; |
4320 | ||
4321 | for (i = j = 0; i < CT_SIZE; ++i) | |
4322 | for (p = ct_table[i]; p; p = p->next) | |
4323 | colors[j++] = p->pixel; | |
4324 | } | |
4325 | ||
4326 | return colors; | |
4327 | } | |
4328 | ||
4329 | #else /* COLOR_TABLE_SUPPORT */ | |
4330 | ||
4331 | static unsigned long | |
7c3320d8 | 4332 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4333 | { |
4334 | unsigned long pixel; | |
4335 | ||
4ef0d4d0 KS |
4336 | #ifdef HAVE_NTGUI |
4337 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4338 | #endif /* HAVE_NTGUI */ | |
4339 | ||
edfda783 AR |
4340 | #ifdef HAVE_NS |
4341 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4342 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4343 | return pixel; |
4344 | } | |
4345 | ||
4346 | static void | |
7c3320d8 | 4347 | init_color_table (void) |
4ef0d4d0 KS |
4348 | { |
4349 | } | |
4350 | #endif /* COLOR_TABLE_SUPPORT */ | |
4351 | ||
4352 | \f | |
4353 | /*********************************************************************** | |
4354 | Algorithms | |
4355 | ***********************************************************************/ | |
4356 | ||
4ef0d4d0 KS |
4357 | /* Edge detection matrices for different edge-detection |
4358 | strategies. */ | |
4359 | ||
4360 | static int emboss_matrix[9] = { | |
4361 | /* x - 1 x x + 1 */ | |
4362 | 2, -1, 0, /* y - 1 */ | |
4363 | -1, 0, 1, /* y */ | |
4364 | 0, 1, -2 /* y + 1 */ | |
4365 | }; | |
4366 | ||
4367 | static int laplace_matrix[9] = { | |
4368 | /* x - 1 x x + 1 */ | |
4369 | 1, 0, 0, /* y - 1 */ | |
4370 | 0, 0, 0, /* y */ | |
4371 | 0, 0, -1 /* y + 1 */ | |
4372 | }; | |
4373 | ||
4374 | /* Value is the intensity of the color whose red/green/blue values | |
4375 | are R, G, and B. */ | |
4376 | ||
4377 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4378 | ||
4379 | ||
4380 | /* On frame F, return an array of XColor structures describing image | |
4381 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
578098f3 | 4382 | means also fill the red/green/blue members of the XColor |
4ef0d4d0 KS |
4383 | structures. Value is a pointer to the array of XColors structures, |
4384 | allocated with xmalloc; it must be freed by the caller. */ | |
4385 | ||
4386 | static XColor * | |
578098f3 | 4387 | x_to_xcolors (struct frame *f, struct image *img, bool rgb_p) |
4ef0d4d0 KS |
4388 | { |
4389 | int x, y; | |
4390 | XColor *colors, *p; | |
4391 | XImagePtr_or_DC ximg; | |
4392 | #ifdef HAVE_NTGUI | |
4393 | HDC hdc; | |
4394 | HGDIOBJ prev; | |
4395 | #endif /* HAVE_NTGUI */ | |
4396 | ||
ddff3151 PE |
4397 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *colors / img->width < img->height) |
4398 | memory_full (SIZE_MAX); | |
23f86fce | 4399 | colors = xmalloc (sizeof *colors * img->width * img->height); |
4ef0d4d0 KS |
4400 | |
4401 | #ifndef HAVE_NTGUI | |
4402 | /* Get the X image IMG->pixmap. */ | |
4403 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4404 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4405 | #else | |
4406 | /* Load the image into a memory device context. */ | |
4407 | hdc = get_frame_dc (f); | |
4408 | ximg = CreateCompatibleDC (hdc); | |
4409 | release_frame_dc (f, hdc); | |
4410 | prev = SelectObject (ximg, img->pixmap); | |
4411 | #endif /* HAVE_NTGUI */ | |
4412 | ||
4413 | /* Fill the `pixel' members of the XColor array. I wished there | |
4414 | were an easy and portable way to circumvent XGetPixel. */ | |
4415 | p = colors; | |
4416 | for (y = 0; y < img->height; ++y) | |
4417 | { | |
8b7d0a16 | 4418 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
6045c4fd | 4419 | XColor *row = p; |
4ef0d4d0 | 4420 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4421 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4422 | if (rgb_p) |
4423 | x_query_colors (f, row, img->width); | |
4424 | ||
4425 | #else | |
4426 | ||
4427 | for (x = 0; x < img->width; ++x, ++p) | |
4428 | { | |
4429 | /* W32_TODO: palette support needed here? */ | |
4430 | p->pixel = GET_PIXEL (ximg, x, y); | |
4431 | if (rgb_p) | |
4432 | { | |
4ef0d4d0 KS |
4433 | p->red = RED16_FROM_ULONG (p->pixel); |
4434 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4435 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4436 | } |
4437 | } | |
4438 | #endif /* HAVE_X_WINDOWS */ | |
4439 | } | |
4440 | ||
4441 | Destroy_Image (ximg, prev); | |
4442 | ||
4443 | return colors; | |
4444 | } | |
4445 | ||
4446 | #ifdef HAVE_NTGUI | |
4447 | ||
4448 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4449 | created with CreateDIBSection, with the pointer to the bit values | |
4450 | stored in ximg->data. */ | |
4451 | ||
3046a84b | 4452 | static void |
7c3320d8 | 4453 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4454 | { |
4455 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4456 | unsigned char * pixel; |
4457 | ||
4458 | /* True color images. */ | |
4459 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4460 | { | |
4461 | int rowbytes = width * 3; | |
4462 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4463 | if (rowbytes % 4) | |
4464 | rowbytes += 4 - (rowbytes % 4); | |
4465 | ||
4466 | pixel = ximg->data + y * rowbytes + x * 3; | |
4467 | /* Windows bitmaps are in BGR order. */ | |
4468 | *pixel = GetBValue (color); | |
4469 | *(pixel + 1) = GetGValue (color); | |
4470 | *(pixel + 2) = GetRValue (color); | |
4471 | } | |
4472 | /* Monochrome images. */ | |
4473 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4474 | { | |
4475 | int rowbytes = width / 8; | |
4476 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4477 | if (rowbytes % 4) | |
4478 | rowbytes += 4 - (rowbytes % 4); | |
4479 | pixel = ximg->data + y * rowbytes + x / 8; | |
4480 | /* Filter out palette info. */ | |
4481 | if (color & 0x00ffffff) | |
4482 | *pixel = *pixel | (1 << x % 8); | |
4483 | else | |
4484 | *pixel = *pixel & ~(1 << x % 8); | |
4485 | } | |
4486 | else | |
4487 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4488 | } | |
4489 | ||
4490 | #endif /* HAVE_NTGUI */ | |
4491 | ||
4492 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4493 | RGB members are set. F is the frame on which this all happens. | |
4494 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4495 | ||
4496 | static void | |
d3da34e0 | 4497 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4498 | { |
4499 | int x, y; | |
edfda783 | 4500 | XImagePtr oimg = NULL; |
9d7112ed | 4501 | Pixmap pixmap; |
4ef0d4d0 KS |
4502 | XColor *p; |
4503 | ||
4504 | init_color_table (); | |
4505 | ||
4506 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4507 | &oimg, &pixmap); | |
4508 | p = colors; | |
4509 | for (y = 0; y < img->height; ++y) | |
4510 | for (x = 0; x < img->width; ++x, ++p) | |
4511 | { | |
4512 | unsigned long pixel; | |
4513 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4514 | XPutPixel (oimg, x, y, pixel); | |
4515 | } | |
4516 | ||
4517 | xfree (colors); | |
4518 | x_clear_image_1 (f, img, 1, 0, 1); | |
4519 | ||
4520 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4521 | x_destroy_x_image (oimg); | |
4522 | img->pixmap = pixmap; | |
4523 | #ifdef COLOR_TABLE_SUPPORT | |
4524 | img->colors = colors_in_color_table (&img->ncolors); | |
4525 | free_color_table (); | |
4526 | #endif /* COLOR_TABLE_SUPPORT */ | |
4527 | } | |
4528 | ||
4529 | ||
4530 | /* On frame F, perform edge-detection on image IMG. | |
4531 | ||
4532 | MATRIX is a nine-element array specifying the transformation | |
4533 | matrix. See emboss_matrix for an example. | |
4534 | ||
4535 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4536 | outgoing image. */ | |
4537 | ||
4538 | static void | |
d3da34e0 | 4539 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4540 | { |
4541 | XColor *colors = x_to_xcolors (f, img, 1); | |
4542 | XColor *new, *p; | |
4543 | int x, y, i, sum; | |
4544 | ||
4545 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4546 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4547 | |
4548 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4549 | ||
ddff3151 PE |
4550 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *new / img->width < img->height) |
4551 | memory_full (SIZE_MAX); | |
23f86fce | 4552 | new = xmalloc (sizeof *new * img->width * img->height); |
4ef0d4d0 KS |
4553 | |
4554 | for (y = 0; y < img->height; ++y) | |
4555 | { | |
4556 | p = COLOR (new, 0, y); | |
4557 | p->red = p->green = p->blue = 0xffff/2; | |
4558 | p = COLOR (new, img->width - 1, y); | |
4559 | p->red = p->green = p->blue = 0xffff/2; | |
4560 | } | |
4561 | ||
4562 | for (x = 1; x < img->width - 1; ++x) | |
4563 | { | |
4564 | p = COLOR (new, x, 0); | |
4565 | p->red = p->green = p->blue = 0xffff/2; | |
4566 | p = COLOR (new, x, img->height - 1); | |
4567 | p->red = p->green = p->blue = 0xffff/2; | |
4568 | } | |
4569 | ||
4570 | for (y = 1; y < img->height - 1; ++y) | |
4571 | { | |
4572 | p = COLOR (new, 1, y); | |
4573 | ||
4574 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4575 | { | |
6ae141d6 | 4576 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4577 | |
4578 | r = g = b = i = 0; | |
6ae141d6 PE |
4579 | for (yy = y - 1; yy < y + 2; ++yy) |
4580 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4581 | if (matrix[i]) |
4582 | { | |
6ae141d6 | 4583 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4584 | r += matrix[i] * t->red; |
4585 | g += matrix[i] * t->green; | |
4586 | b += matrix[i] * t->blue; | |
4587 | } | |
4588 | ||
4589 | r = (r / sum + color_adjust) & 0xffff; | |
4590 | g = (g / sum + color_adjust) & 0xffff; | |
4591 | b = (b / sum + color_adjust) & 0xffff; | |
4592 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4593 | } | |
4594 | } | |
4595 | ||
4596 | xfree (colors); | |
4597 | x_from_xcolors (f, img, new); | |
4598 | ||
4599 | #undef COLOR | |
4600 | } | |
4601 | ||
4602 | ||
4603 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4604 | on frame F. */ | |
4605 | ||
4606 | static void | |
d3da34e0 | 4607 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4608 | { |
4609 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4610 | } | |
4611 | ||
4612 | ||
4613 | /* Transform image IMG which is used on frame F with a Laplace | |
4614 | edge-detection algorithm. The result is an image that can be used | |
4615 | to draw disabled buttons, for example. */ | |
4616 | ||
4617 | static void | |
d3da34e0 | 4618 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4619 | { |
4620 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4621 | } | |
4622 | ||
4623 | ||
4624 | /* Perform edge-detection on image IMG on frame F, with specified | |
4625 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4626 | ||
4627 | MATRIX must be either | |
4628 | ||
4629 | - a list of at least 9 numbers in row-major form | |
4630 | - a vector of at least 9 numbers | |
4631 | ||
4632 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4633 | number. */ | |
4634 | ||
4635 | static void | |
d3da34e0 JB |
4636 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4637 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4638 | { |
4639 | int i = 0; | |
4640 | int trans[9]; | |
4641 | ||
4642 | if (CONSP (matrix)) | |
4643 | { | |
4644 | for (i = 0; | |
4645 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4646 | ++i, matrix = XCDR (matrix)) | |
4647 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4648 | } | |
4649 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4650 | { | |
4651 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4652 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4653 | } | |
4654 | ||
4655 | if (NILP (color_adjust)) | |
4656 | color_adjust = make_number (0xffff / 2); | |
4657 | ||
4658 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4659 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4660 | } |
4661 | ||
4662 | ||
4663 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4664 | ||
4665 | static void | |
d3da34e0 | 4666 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4667 | { |
4668 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4669 | #ifdef HAVE_NTGUI | |
4670 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4671 | #else | |
4672 | int n_planes = dpyinfo->n_planes; | |
4673 | #endif /* HAVE_NTGUI */ | |
4674 | ||
4675 | if (n_planes >= 2) | |
4676 | { | |
4677 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4678 | drawing such images with a stipple can look very odd, so | |
4679 | we're using this method instead. */ | |
4680 | XColor *colors = x_to_xcolors (f, img, 1); | |
4681 | XColor *p, *end; | |
4682 | const int h = 15000; | |
4683 | const int l = 30000; | |
4684 | ||
4685 | for (p = colors, end = colors + img->width * img->height; | |
4686 | p < end; | |
4687 | ++p) | |
4688 | { | |
4689 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4690 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4691 | p->red = p->green = p->blue = i2; | |
4692 | } | |
4693 | ||
4694 | x_from_xcolors (f, img, colors); | |
4695 | } | |
4696 | ||
4697 | /* Draw a cross over the disabled image, if we must or if we | |
4698 | should. */ | |
4699 | if (n_planes < 2 || cross_disabled_images) | |
4700 | { | |
4701 | #ifndef HAVE_NTGUI | |
5afa3a81 | 4702 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4703 | |
4ef0d4d0 | 4704 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4705 | |
6045c4fd PE |
4706 | Display *dpy = FRAME_X_DISPLAY (f); |
4707 | GC gc = XCreateGC (dpy, img->pixmap, 0, NULL); | |
4ef0d4d0 KS |
4708 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4709 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4710 | img->width - 1, img->height - 1); | |
4711 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4712 | img->width - 1, 0); | |
4713 | XFreeGC (dpy, gc); | |
4714 | ||
4715 | if (img->mask) | |
4716 | { | |
ae8279db | 4717 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4718 | XSetForeground (dpy, gc, MaskForeground (f)); |
4719 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4720 | img->width - 1, img->height - 1); | |
4721 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4722 | img->width - 1, 0); | |
4723 | XFreeGC (dpy, gc); | |
4724 | } | |
edfda783 | 4725 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4726 | #else |
4727 | HDC hdc, bmpdc; | |
4728 | HGDIOBJ prev; | |
4729 | ||
4730 | hdc = get_frame_dc (f); | |
4731 | bmpdc = CreateCompatibleDC (hdc); | |
4732 | release_frame_dc (f, hdc); | |
4733 | ||
4734 | prev = SelectObject (bmpdc, img->pixmap); | |
4735 | ||
4736 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4737 | MoveToEx (bmpdc, 0, 0, NULL); | |
4738 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4739 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4740 | LineTo (bmpdc, img->width - 1, 0); | |
4741 | ||
4742 | if (img->mask) | |
4743 | { | |
4744 | SelectObject (bmpdc, img->mask); | |
4745 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4746 | MoveToEx (bmpdc, 0, 0, NULL); | |
4747 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4748 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4749 | LineTo (bmpdc, img->width - 1, 0); | |
4750 | } | |
4751 | SelectObject (bmpdc, prev); | |
4752 | DeleteDC (bmpdc); | |
4753 | #endif /* HAVE_NTGUI */ | |
4754 | } | |
4755 | } | |
4756 | ||
4757 | ||
4758 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4759 | name of an image file, for error messages. HOW determines how to | |
4760 | determine the background color of IMG. If it is a list '(R G B)', | |
4761 | with R, G, and B being integers >= 0, take that as the color of the | |
4762 | background. Otherwise, determine the background color of IMG | |
578098f3 | 4763 | heuristically. */ |
4ef0d4d0 | 4764 | |
578098f3 | 4765 | static void |
d3da34e0 | 4766 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4767 | { |
4768 | XImagePtr_or_DC ximg; | |
4769 | #ifndef HAVE_NTGUI | |
4770 | XImagePtr mask_img; | |
4771 | #else | |
4772 | HDC frame_dc; | |
4773 | HGDIOBJ prev; | |
4774 | char *mask_img; | |
4775 | int row_width; | |
4776 | #endif /* HAVE_NTGUI */ | |
578098f3 PE |
4777 | int x, y; |
4778 | bool rc, use_img_background; | |
4ef0d4d0 KS |
4779 | unsigned long bg = 0; |
4780 | ||
4781 | if (img->mask) | |
4782 | { | |
4783 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4784 | img->mask = NO_PIXMAP; | |
4785 | img->background_transparent_valid = 0; | |
4786 | } | |
4787 | ||
4788 | #ifndef HAVE_NTGUI | |
edfda783 | 4789 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4790 | /* Create an image and pixmap serving as mask. */ |
4791 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4792 | &mask_img, &img->mask); | |
4793 | if (!rc) | |
578098f3 | 4794 | return; |
edfda783 | 4795 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4796 | |
4797 | /* Get the X image of IMG->pixmap. */ | |
4798 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4799 | img->width, img->height, | |
4800 | ~0, ZPixmap); | |
4801 | #else | |
4802 | /* Create the bit array serving as mask. */ | |
4803 | row_width = (img->width + 7) / 8; | |
23f86fce | 4804 | mask_img = xzalloc (row_width * img->height); |
4ef0d4d0 KS |
4805 | |
4806 | /* Create a memory device context for IMG->pixmap. */ | |
4807 | frame_dc = get_frame_dc (f); | |
4808 | ximg = CreateCompatibleDC (frame_dc); | |
4809 | release_frame_dc (f, frame_dc); | |
4810 | prev = SelectObject (ximg, img->pixmap); | |
4811 | #endif /* HAVE_NTGUI */ | |
4812 | ||
4813 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4814 | take that as color. Otherwise, use the image's background color. */ | |
4815 | use_img_background = 1; | |
4816 | ||
4817 | if (CONSP (how)) | |
4818 | { | |
4819 | int rgb[3], i; | |
4820 | ||
4821 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4822 | { | |
4823 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4824 | how = XCDR (how); | |
4825 | } | |
4826 | ||
4827 | if (i == 3 && NILP (how)) | |
4828 | { | |
4829 | char color_name[30]; | |
4830 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4831 | bg = ( | |
4832 | #ifdef HAVE_NTGUI | |
4833 | 0x00ffffff & /* Filter out palette info. */ | |
4834 | #endif /* HAVE_NTGUI */ | |
4835 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4836 | use_img_background = 0; | |
4837 | } | |
4838 | } | |
4839 | ||
4840 | if (use_img_background) | |
6ac3c7bb | 4841 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4842 | |
4843 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4844 | from the background color bg. */ | |
4845 | #ifndef HAVE_NTGUI | |
4846 | for (y = 0; y < img->height; ++y) | |
4847 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4848 | #ifndef HAVE_NS |
4ef0d4d0 | 4849 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4850 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4851 | #else |
4852 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4853 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4854 | #endif /* HAVE_NS */ |
4855 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4856 | /* Fill in the background_transparent field while we have the mask handy. */ |
4857 | image_background_transparent (img, f, mask_img); | |
4858 | ||
4859 | /* Put mask_img into img->mask. */ | |
4860 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4861 | x_destroy_x_image (mask_img); | |
edfda783 | 4862 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4863 | #else |
4864 | for (y = 0; y < img->height; ++y) | |
4865 | for (x = 0; x < img->width; ++x) | |
4866 | { | |
4867 | COLORREF p = GetPixel (ximg, x, y); | |
4868 | if (p != bg) | |
4869 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4870 | } | |
4871 | ||
4872 | /* Create the mask image. */ | |
4873 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4874 | mask_img); | |
4875 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4876 | SelectObject (ximg, img->mask); | |
4877 | image_background_transparent (img, f, ximg); | |
4878 | ||
4879 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4880 | xfree (mask_img); | |
4881 | #endif /* HAVE_NTGUI */ | |
4882 | ||
4883 | Destroy_Image (ximg, prev); | |
4ef0d4d0 KS |
4884 | } |
4885 | ||
4886 | \f | |
4887 | /*********************************************************************** | |
4888 | PBM (mono, gray, color) | |
4889 | ***********************************************************************/ | |
4890 | ||
578098f3 PE |
4891 | static bool pbm_image_p (Lisp_Object object); |
4892 | static bool pbm_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
4893 | |
4894 | /* The symbol `pbm' identifying images of this type. */ | |
4895 | ||
955cbe7b | 4896 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
4897 | |
4898 | /* Indices of image specification fields in gs_format, below. */ | |
4899 | ||
4900 | enum pbm_keyword_index | |
4901 | { | |
4902 | PBM_TYPE, | |
4903 | PBM_FILE, | |
4904 | PBM_DATA, | |
4905 | PBM_ASCENT, | |
4906 | PBM_MARGIN, | |
4907 | PBM_RELIEF, | |
4908 | PBM_ALGORITHM, | |
4909 | PBM_HEURISTIC_MASK, | |
4910 | PBM_MASK, | |
4911 | PBM_FOREGROUND, | |
4912 | PBM_BACKGROUND, | |
4913 | PBM_LAST | |
4914 | }; | |
4915 | ||
4916 | /* Vector of image_keyword structures describing the format | |
4917 | of valid user-defined image specifications. */ | |
4918 | ||
91433552 | 4919 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
4920 | { |
4921 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4922 | {":file", IMAGE_STRING_VALUE, 0}, | |
4923 | {":data", IMAGE_STRING_VALUE, 0}, | |
4924 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 4925 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
4926 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
4927 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4928 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4929 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4930 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4931 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4932 | }; | |
4933 | ||
4934 | /* Structure describing the image type `pbm'. */ | |
4935 | ||
4936 | static struct image_type pbm_type = | |
4937 | { | |
4938 | &Qpbm, | |
4939 | pbm_image_p, | |
4940 | pbm_load, | |
4941 | x_clear_image, | |
bb4d86b4 | 4942 | NULL, |
4ef0d4d0 KS |
4943 | NULL |
4944 | }; | |
4945 | ||
4946 | ||
578098f3 | 4947 | /* Return true if OBJECT is a valid PBM image specification. */ |
4ef0d4d0 | 4948 | |
578098f3 | 4949 | static bool |
d3da34e0 | 4950 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
4951 | { |
4952 | struct image_keyword fmt[PBM_LAST]; | |
4953 | ||
72af86bd | 4954 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
4955 | |
4956 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
4957 | return 0; | |
4958 | ||
4959 | /* Must specify either :data or :file. */ | |
4960 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
4961 | } | |
4962 | ||
4963 | ||
4964 | /* Scan a decimal number from *S and return it. Advance *S while | |
4965 | reading the number. END is the end of the string. Value is -1 at | |
4966 | end of input. */ | |
4967 | ||
4968 | static int | |
d3da34e0 | 4969 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
4970 | { |
4971 | int c = 0, val = -1; | |
4972 | ||
4973 | while (*s < end) | |
4974 | { | |
4975 | /* Skip white-space. */ | |
620f13b0 | 4976 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
4977 | ; |
4978 | ||
4979 | if (c == '#') | |
4980 | { | |
4981 | /* Skip comment to end of line. */ | |
4982 | while (*s < end && (c = *(*s)++, c != '\n')) | |
4983 | ; | |
4984 | } | |
620f13b0 | 4985 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
4986 | { |
4987 | /* Read decimal number. */ | |
4988 | val = c - '0'; | |
620f13b0 | 4989 | while (*s < end && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
4990 | val = 10 * val + c - '0'; |
4991 | break; | |
4992 | } | |
4993 | else | |
4994 | break; | |
4995 | } | |
4996 | ||
4997 | return val; | |
4998 | } | |
4999 | ||
5000 | ||
4ef0d4d0 KS |
5001 | /* Load PBM image IMG for use on frame F. */ |
5002 | ||
578098f3 | 5003 | static bool |
d3da34e0 | 5004 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 5005 | { |
578098f3 PE |
5006 | bool raw_p; |
5007 | int x, y; | |
4ef0d4d0 KS |
5008 | int width, height, max_color_idx = 0; |
5009 | XImagePtr ximg; | |
5010 | Lisp_Object file, specified_file; | |
5011 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5012 | unsigned char *contents = NULL; |
5013 | unsigned char *end, *p; | |
dd52fcea | 5014 | ptrdiff_t size; |
4ef0d4d0 KS |
5015 | |
5016 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5017 | |
5018 | if (STRINGP (specified_file)) | |
5019 | { | |
5020 | file = x_find_image_file (specified_file); | |
5021 | if (!STRINGP (file)) | |
5022 | { | |
5023 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5024 | return 0; |
5025 | } | |
5026 | ||
42a5b22f | 5027 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5028 | if (contents == NULL) |
5029 | { | |
5030 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5031 | return 0; |
5032 | } | |
5033 | ||
5034 | p = contents; | |
5035 | end = contents + size; | |
5036 | } | |
5037 | else | |
5038 | { | |
5039 | Lisp_Object data; | |
5040 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5041 | if (!STRINGP (data)) |
5042 | { | |
5043 | image_error ("Invalid image data `%s'", data, Qnil); | |
5044 | return 0; | |
5045 | } | |
4ef0d4d0 KS |
5046 | p = SDATA (data); |
5047 | end = p + SBYTES (data); | |
5048 | } | |
5049 | ||
5050 | /* Check magic number. */ | |
5051 | if (end - p < 2 || *p++ != 'P') | |
5052 | { | |
5053 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5054 | error: | |
5055 | xfree (contents); | |
4ef0d4d0 KS |
5056 | return 0; |
5057 | } | |
5058 | ||
5059 | switch (*p++) | |
5060 | { | |
5061 | case '1': | |
5062 | raw_p = 0, type = PBM_MONO; | |
5063 | break; | |
5064 | ||
5065 | case '2': | |
5066 | raw_p = 0, type = PBM_GRAY; | |
5067 | break; | |
5068 | ||
5069 | case '3': | |
5070 | raw_p = 0, type = PBM_COLOR; | |
5071 | break; | |
5072 | ||
5073 | case '4': | |
5074 | raw_p = 1, type = PBM_MONO; | |
5075 | break; | |
5076 | ||
5077 | case '5': | |
5078 | raw_p = 1, type = PBM_GRAY; | |
5079 | break; | |
5080 | ||
5081 | case '6': | |
5082 | raw_p = 1, type = PBM_COLOR; | |
5083 | break; | |
5084 | ||
5085 | default: | |
5086 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5087 | goto error; | |
5088 | } | |
5089 | ||
5090 | /* Read width, height, maximum color-component. Characters | |
5091 | starting with `#' up to the end of a line are ignored. */ | |
5092 | width = pbm_scan_number (&p, end); | |
5093 | height = pbm_scan_number (&p, end); | |
5094 | ||
5095 | if (type != PBM_MONO) | |
5096 | { | |
5097 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5098 | if (max_color_idx > 65535 || max_color_idx < 0) |
5099 | { | |
5100 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5101 | goto error; | |
5102 | } | |
4ef0d4d0 KS |
5103 | } |
5104 | ||
b9c89e11 JR |
5105 | if (!check_image_size (f, width, height)) |
5106 | { | |
10ea2b82 | 5107 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5108 | goto error; |
5109 | } | |
4ef0d4d0 KS |
5110 | |
5111 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5112 | &ximg, &img->pixmap)) | |
5113 | goto error; | |
5114 | ||
5115 | /* Initialize the color hash table. */ | |
5116 | init_color_table (); | |
5117 | ||
5118 | if (type == PBM_MONO) | |
5119 | { | |
5120 | int c = 0, g; | |
5121 | struct image_keyword fmt[PBM_LAST]; | |
5122 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5123 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5124 | ||
5125 | /* Parse the image specification. */ | |
72af86bd | 5126 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5127 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5128 | ||
5129 | /* Get foreground and background colors, maybe allocate colors. */ | |
5130 | if (fmt[PBM_FOREGROUND].count | |
5131 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5132 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5133 | if (fmt[PBM_BACKGROUND].count | |
5134 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5135 | { | |
5136 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5137 | img->background = bg; | |
5138 | img->background_valid = 1; | |
5139 | } | |
5140 | ||
5141 | for (y = 0; y < height; ++y) | |
5142 | for (x = 0; x < width; ++x) | |
5143 | { | |
5144 | if (raw_p) | |
5145 | { | |
5146 | if ((x & 7) == 0) | |
c295e710 CY |
5147 | { |
5148 | if (p >= end) | |
5149 | { | |
5150 | x_destroy_x_image (ximg); | |
5151 | x_clear_image (f, img); | |
5152 | image_error ("Invalid image size in image `%s'", | |
5153 | img->spec, Qnil); | |
5154 | goto error; | |
5155 | } | |
5156 | c = *p++; | |
5157 | } | |
4ef0d4d0 KS |
5158 | g = c & 0x80; |
5159 | c <<= 1; | |
5160 | } | |
5161 | else | |
5162 | g = pbm_scan_number (&p, end); | |
5163 | ||
5164 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5165 | } | |
5166 | } | |
5167 | else | |
5168 | { | |
b9c89e11 JR |
5169 | int expected_size = height * width; |
5170 | if (max_color_idx > 255) | |
5171 | expected_size *= 2; | |
5172 | if (type == PBM_COLOR) | |
5173 | expected_size *= 3; | |
5174 | ||
5175 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5176 | { |
5177 | x_destroy_x_image (ximg); | |
fb0b0862 | 5178 | x_clear_image (f, img); |
39e653ea CY |
5179 | image_error ("Invalid image size in image `%s'", |
5180 | img->spec, Qnil); | |
5181 | goto error; | |
5182 | } | |
5183 | ||
4ef0d4d0 KS |
5184 | for (y = 0; y < height; ++y) |
5185 | for (x = 0; x < width; ++x) | |
5186 | { | |
5187 | int r, g, b; | |
5188 | ||
b9c89e11 JR |
5189 | if (type == PBM_GRAY && raw_p) |
5190 | { | |
5191 | r = g = b = *p++; | |
5192 | if (max_color_idx > 255) | |
5193 | r = g = b = r * 256 + *p++; | |
5194 | } | |
5195 | else if (type == PBM_GRAY) | |
5196 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5197 | else if (raw_p) |
5198 | { | |
5199 | r = *p++; | |
b9c89e11 JR |
5200 | if (max_color_idx > 255) |
5201 | r = r * 256 + *p++; | |
4ef0d4d0 | 5202 | g = *p++; |
b9c89e11 JR |
5203 | if (max_color_idx > 255) |
5204 | g = g * 256 + *p++; | |
4ef0d4d0 | 5205 | b = *p++; |
b9c89e11 JR |
5206 | if (max_color_idx > 255) |
5207 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5208 | } |
5209 | else | |
5210 | { | |
5211 | r = pbm_scan_number (&p, end); | |
5212 | g = pbm_scan_number (&p, end); | |
5213 | b = pbm_scan_number (&p, end); | |
5214 | } | |
5215 | ||
5216 | if (r < 0 || g < 0 || b < 0) | |
5217 | { | |
5218 | x_destroy_x_image (ximg); | |
5219 | image_error ("Invalid pixel value in image `%s'", | |
5220 | img->spec, Qnil); | |
5221 | goto error; | |
5222 | } | |
5223 | ||
5224 | /* RGB values are now in the range 0..max_color_idx. | |
5225 | Scale this to the range 0..0xffff supported by X. */ | |
5226 | r = (double) r * 65535 / max_color_idx; | |
5227 | g = (double) g * 65535 / max_color_idx; | |
5228 | b = (double) b * 65535 / max_color_idx; | |
5229 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5230 | } | |
5231 | } | |
5232 | ||
5233 | #ifdef COLOR_TABLE_SUPPORT | |
5234 | /* Store in IMG->colors the colors allocated for the image, and | |
5235 | free the color table. */ | |
5236 | img->colors = colors_in_color_table (&img->ncolors); | |
5237 | free_color_table (); | |
5238 | #endif /* COLOR_TABLE_SUPPORT */ | |
5239 | ||
5240 | img->width = width; | |
5241 | img->height = height; | |
5242 | ||
5243 | /* Maybe fill in the background field while we have ximg handy. */ | |
5244 | ||
5245 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5246 | /* Casting avoids a GCC warning. */ |
5247 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5248 | |
5249 | /* Put the image into a pixmap. */ | |
5250 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5251 | x_destroy_x_image (ximg); | |
5252 | ||
5253 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5254 | img->width = width; |
4ef0d4d0 KS |
5255 | img->height = height; */ |
5256 | ||
4ef0d4d0 KS |
5257 | xfree (contents); |
5258 | return 1; | |
5259 | } | |
5260 | ||
5261 | \f | |
5262 | /*********************************************************************** | |
5263 | PNG | |
5264 | ***********************************************************************/ | |
5265 | ||
9e2a2647 | 5266 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5267 | |
5268 | /* Function prototypes. */ | |
5269 | ||
578098f3 PE |
5270 | static bool png_image_p (Lisp_Object object); |
5271 | static bool png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5272 | |
5273 | /* The symbol `png' identifying images of this type. */ | |
5274 | ||
955cbe7b | 5275 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5276 | |
5277 | /* Indices of image specification fields in png_format, below. */ | |
5278 | ||
5279 | enum png_keyword_index | |
5280 | { | |
5281 | PNG_TYPE, | |
5282 | PNG_DATA, | |
5283 | PNG_FILE, | |
5284 | PNG_ASCENT, | |
5285 | PNG_MARGIN, | |
5286 | PNG_RELIEF, | |
5287 | PNG_ALGORITHM, | |
5288 | PNG_HEURISTIC_MASK, | |
5289 | PNG_MASK, | |
5290 | PNG_BACKGROUND, | |
5291 | PNG_LAST | |
5292 | }; | |
5293 | ||
5294 | /* Vector of image_keyword structures describing the format | |
5295 | of valid user-defined image specifications. */ | |
5296 | ||
91433552 | 5297 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5298 | { |
5299 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5300 | {":data", IMAGE_STRING_VALUE, 0}, | |
5301 | {":file", IMAGE_STRING_VALUE, 0}, | |
5302 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5303 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5304 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5305 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5306 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5307 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5308 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5309 | }; | |
5310 | ||
a9e7a9d5 | 5311 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 5312 | static bool init_png_functions (void); |
bb4d86b4 CY |
5313 | #else |
5314 | #define init_png_functions NULL | |
5315 | #endif | |
5316 | ||
4ef0d4d0 KS |
5317 | /* Structure describing the image type `png'. */ |
5318 | ||
5319 | static struct image_type png_type = | |
5320 | { | |
5321 | &Qpng, | |
5322 | png_image_p, | |
5323 | png_load, | |
5324 | x_clear_image, | |
bb4d86b4 | 5325 | init_png_functions, |
4ef0d4d0 KS |
5326 | NULL |
5327 | }; | |
5328 | ||
578098f3 | 5329 | /* Return true if OBJECT is a valid PNG image specification. */ |
4ef0d4d0 | 5330 | |
578098f3 | 5331 | static bool |
d3da34e0 | 5332 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5333 | { |
5334 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5335 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5336 | |
5337 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5338 | return 0; | |
5339 | ||
5340 | /* Must specify either the :data or :file keyword. */ | |
5341 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5342 | } | |
5343 | ||
9e2a2647 | 5344 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5345 | |
5346 | ||
5347 | #ifdef HAVE_PNG | |
5348 | ||
0fda9b75 | 5349 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
5350 | /* PNG library details. */ |
5351 | ||
14beddf4 CY |
5352 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5353 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5354 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5355 | png_error_ptr, png_error_ptr)); | |
5356 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5357 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5358 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5359 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5360 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5361 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5362 | png_uint_32 *, png_uint_32 *, |
5363 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5364 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5365 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5366 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5367 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5368 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5369 | int, int, double)); |
14beddf4 CY |
5370 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5371 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5372 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5373 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5374 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5375 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5376 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5377 | |
7f9c5df9 | 5378 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5379 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5380 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5381 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 | 5382 | |
578098f3 | 5383 | static bool |
d07ff9db | 5384 | init_png_functions (void) |
4ef0d4d0 KS |
5385 | { |
5386 | HMODULE library; | |
5387 | ||
d07ff9db | 5388 | if (!(library = w32_delayed_load (Qpng))) |
4ef0d4d0 KS |
5389 | return 0; |
5390 | ||
5391 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5392 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5393 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5394 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5395 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5396 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5397 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5398 | LOAD_IMGLIB_FN (library, png_read_info); | |
5399 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5400 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5401 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5402 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5403 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5404 | LOAD_IMGLIB_FN (library, png_set_background); | |
5405 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5406 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5407 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5408 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5409 | LOAD_IMGLIB_FN (library, png_read_image); | |
5410 | LOAD_IMGLIB_FN (library, png_read_end); | |
5411 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5412 | |
5413 | #if (PNG_LIBPNG_VER >= 10500) | |
5414 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5415 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5416 | #endif /* libpng version >= 1.5 */ | |
5417 | ||
4ef0d4d0 KS |
5418 | return 1; |
5419 | } | |
5420 | #else | |
5421 | ||
5422 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5423 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5424 | #define fn_png_create_read_struct png_create_read_struct |
5425 | #define fn_png_create_info_struct png_create_info_struct | |
5426 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5427 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5428 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5429 | #define fn_png_read_info png_read_info | |
5430 | #define fn_png_get_IHDR png_get_IHDR | |
5431 | #define fn_png_get_valid png_get_valid | |
5432 | #define fn_png_set_strip_16 png_set_strip_16 | |
5433 | #define fn_png_set_expand png_set_expand | |
5434 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5435 | #define fn_png_set_background png_set_background | |
5436 | #define fn_png_get_bKGD png_get_bKGD | |
5437 | #define fn_png_read_update_info png_read_update_info | |
5438 | #define fn_png_get_channels png_get_channels | |
5439 | #define fn_png_get_rowbytes png_get_rowbytes | |
5440 | #define fn_png_read_image png_read_image | |
5441 | #define fn_png_read_end png_read_end | |
5442 | #define fn_png_error png_error | |
5443 | ||
7f9c5df9 CY |
5444 | #if (PNG_LIBPNG_VER >= 10500) |
5445 | #define fn_png_longjmp png_longjmp | |
5446 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5447 | #endif /* libpng version >= 1.5 */ | |
5448 | ||
0fda9b75 | 5449 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 5450 | |
0328b6de PE |
5451 | /* Possibly inefficient/inexact substitutes for _setjmp and _longjmp. |
5452 | Do not use sys_setjmp, as PNG supports only jmp_buf. The _longjmp | |
7105c8cb EZ |
5453 | substitute may munge the signal mask, but that should be OK here. |
5454 | MinGW (MS-Windows) uses _setjmp and defines setjmp to _setjmp in | |
5455 | the system header setjmp.h; don't mess up that. */ | |
0328b6de | 5456 | #ifndef HAVE__SETJMP |
39a57ad0 | 5457 | # define _setjmp(j) setjmp (j) |
0328b6de PE |
5458 | # define _longjmp longjmp |
5459 | #endif | |
7f9c5df9 CY |
5460 | |
5461 | #if (PNG_LIBPNG_VER < 10500) | |
af26b72c | 5462 | #define PNG_LONGJMP(ptr) (_longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5463 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5464 | #else | |
df61c790 | 5465 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5466 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5467 | #define PNG_JMPBUF(ptr) \ |
af26b72c | 5468 | (*fn_png_set_longjmp_fn ((ptr), _longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5469 | #endif |
5470 | ||
4ef0d4d0 KS |
5471 | /* Error and warning handlers installed when the PNG library |
5472 | is initialized. */ | |
5473 | ||
845ca893 | 5474 | static _Noreturn void |
d3da34e0 | 5475 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5476 | { |
a54e2c05 | 5477 | eassert (png_ptr != NULL); |
5be1c984 EZ |
5478 | /* Avoid compiler warning about deprecated direct access to |
5479 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5480 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5481 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5482 | } |
5483 | ||
5484 | ||
5485 | static void | |
d3da34e0 | 5486 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5487 | { |
a54e2c05 | 5488 | eassert (png_ptr != NULL); |
4ef0d4d0 KS |
5489 | image_error ("PNG warning: %s", build_string (msg), Qnil); |
5490 | } | |
5491 | ||
5492 | /* Memory source for PNG decoding. */ | |
5493 | ||
5494 | struct png_memory_storage | |
5495 | { | |
5496 | unsigned char *bytes; /* The data */ | |
3f791afe PE |
5497 | ptrdiff_t len; /* How big is it? */ |
5498 | ptrdiff_t index; /* Where are we? */ | |
4ef0d4d0 KS |
5499 | }; |
5500 | ||
5501 | ||
5502 | /* Function set as reader function when reading PNG image from memory. | |
5503 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5504 | bytes from the input to DATA. */ | |
5505 | ||
5506 | static void | |
d3da34e0 | 5507 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5508 | { |
5509 | struct png_memory_storage *tbr | |
5510 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5511 | ||
5512 | if (length > tbr->len - tbr->index) | |
5513 | fn_png_error (png_ptr, "Read error"); | |
5514 | ||
72af86bd | 5515 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5516 | tbr->index = tbr->index + length; |
5517 | } | |
5518 | ||
b0da69a7 | 5519 | |
9a22a004 JB |
5520 | /* Function set as reader function when reading PNG image from a file. |
5521 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5522 | bytes from the input to DATA. */ | |
5523 | ||
5524 | static void | |
d3da34e0 | 5525 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5526 | { |
5527 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5528 | ||
5529 | if (fread (data, 1, length, fp) < length) | |
5530 | fn_png_error (png_ptr, "Read error"); | |
5531 | } | |
5532 | ||
5533 | ||
578098f3 | 5534 | /* Load PNG image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
5535 | successful. */ |
5536 | ||
40bce90b PE |
5537 | struct png_load_context |
5538 | { | |
0328b6de | 5539 | /* These are members so that longjmp doesn't munge local variables. */ |
40bce90b PE |
5540 | png_struct *png_ptr; |
5541 | png_info *info_ptr; | |
5542 | png_info *end_info; | |
5543 | FILE *fp; | |
5544 | png_byte *pixels; | |
5545 | png_byte **rows; | |
5546 | }; | |
5547 | ||
578098f3 | 5548 | static bool |
40bce90b | 5549 | png_load_body (struct frame *f, struct image *img, struct png_load_context *c) |
4ef0d4d0 KS |
5550 | { |
5551 | Lisp_Object file, specified_file; | |
5552 | Lisp_Object specified_data; | |
5adf60bc PE |
5553 | int x, y; |
5554 | ptrdiff_t i; | |
4ef0d4d0 | 5555 | XImagePtr ximg, mask_img = NULL; |
40bce90b | 5556 | png_struct *png_ptr; |
4ef0d4d0 | 5557 | png_info *info_ptr = NULL, *end_info = NULL; |
40bce90b | 5558 | FILE *fp = NULL; |
4ef0d4d0 | 5559 | png_byte sig[8]; |
40bce90b PE |
5560 | png_byte *pixels = NULL; |
5561 | png_byte **rows = NULL; | |
4ef0d4d0 KS |
5562 | png_uint_32 width, height; |
5563 | int bit_depth, color_type, interlace_type; | |
5564 | png_byte channels; | |
5565 | png_uint_32 row_bytes; | |
578098f3 | 5566 | bool transparent_p; |
4ef0d4d0 KS |
5567 | struct png_memory_storage tbr; /* Data to be read */ |
5568 | ||
5569 | /* Find out what file to load. */ | |
5570 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5571 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5572 | |
5573 | if (NILP (specified_data)) | |
5574 | { | |
5575 | file = x_find_image_file (specified_file); | |
5576 | if (!STRINGP (file)) | |
5577 | { | |
5578 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5579 | return 0; |
5580 | } | |
5581 | ||
5582 | /* Open the image file. */ | |
42a5b22f | 5583 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5584 | if (!fp) |
5585 | { | |
5586 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5587 | return 0; |
5588 | } | |
5589 | ||
5590 | /* Check PNG signature. */ | |
5591 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5592 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5593 | { |
5594 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5595 | fclose (fp); |
5596 | return 0; | |
5597 | } | |
5598 | } | |
5599 | else | |
5600 | { | |
7574650a AS |
5601 | if (!STRINGP (specified_data)) |
5602 | { | |
5603 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5604 | return 0; | |
5605 | } | |
5606 | ||
4ef0d4d0 KS |
5607 | /* Read from memory. */ |
5608 | tbr.bytes = SDATA (specified_data); | |
5609 | tbr.len = SBYTES (specified_data); | |
5610 | tbr.index = 0; | |
5611 | ||
5612 | /* Check PNG signature. */ | |
5613 | if (tbr.len < sizeof sig | |
285d07e2 | 5614 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5615 | { |
5616 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5617 | return 0; |
5618 | } | |
5619 | ||
5620 | /* Need to skip past the signature. */ | |
5621 | tbr.bytes += sizeof (sig); | |
5622 | } | |
5623 | ||
df61c790 AS |
5624 | /* Initialize read and info structs for PNG lib. */ |
5625 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5626 | NULL, my_png_error, | |
5627 | my_png_warning); | |
40bce90b | 5628 | if (png_ptr) |
4ef0d4d0 | 5629 | { |
40bce90b PE |
5630 | info_ptr = fn_png_create_info_struct (png_ptr); |
5631 | end_info = fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
5632 | } |
5633 | ||
40bce90b PE |
5634 | c->png_ptr = png_ptr; |
5635 | c->info_ptr = info_ptr; | |
5636 | c->end_info = end_info; | |
5637 | c->fp = fp; | |
5638 | c->pixels = pixels; | |
5639 | c->rows = rows; | |
5640 | ||
5641 | if (! (info_ptr && end_info)) | |
4ef0d4d0 | 5642 | { |
40bce90b PE |
5643 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
5644 | png_ptr = 0; | |
4ef0d4d0 | 5645 | } |
40bce90b | 5646 | if (! png_ptr) |
4ef0d4d0 | 5647 | { |
4ef0d4d0 | 5648 | if (fp) fclose (fp); |
4ef0d4d0 KS |
5649 | return 0; |
5650 | } | |
5651 | ||
5652 | /* Set error jump-back. We come back here when the PNG library | |
5653 | detects an error. */ | |
af26b72c | 5654 | if (_setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5655 | { |
5656 | error: | |
40bce90b PE |
5657 | if (c->png_ptr) |
5658 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); | |
5659 | xfree (c->pixels); | |
5660 | xfree (c->rows); | |
5661 | if (c->fp) | |
5662 | fclose (c->fp); | |
4ef0d4d0 KS |
5663 | return 0; |
5664 | } | |
5665 | ||
40bce90b PE |
5666 | /* Silence a bogus diagnostic; see GCC bug 54561. */ |
5667 | IF_LINT (fp = c->fp); | |
5668 | ||
4ef0d4d0 KS |
5669 | /* Read image info. */ |
5670 | if (!NILP (specified_data)) | |
5671 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5672 | else | |
9a22a004 | 5673 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5674 | |
5675 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5676 | fn_png_read_info (png_ptr, info_ptr); | |
5677 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5678 | &interlace_type, NULL, NULL); | |
5679 | ||
3f791afe PE |
5680 | if (! (width <= INT_MAX && height <= INT_MAX |
5681 | && check_image_size (f, width, height))) | |
10ea2b82 JR |
5682 | { |
5683 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5684 | goto error; | |
5685 | } | |
ca4aa935 PE |
5686 | |
5687 | /* Create the X image and pixmap now, so that the work below can be | |
5688 | omitted if the image is too large for X. */ | |
5689 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5690 | &img->pixmap)) | |
5691 | goto error; | |
5692 | ||
4ef0d4d0 KS |
5693 | /* If image contains simply transparency data, we prefer to |
5694 | construct a clipping mask. */ | |
5695 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5696 | transparent_p = 1; | |
5697 | else | |
5698 | transparent_p = 0; | |
5699 | ||
5700 | /* This function is easier to write if we only have to handle | |
5701 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5702 | transform other formats into that format. */ | |
5703 | ||
5704 | /* Strip more than 8 bits per channel. */ | |
5705 | if (bit_depth == 16) | |
5706 | fn_png_set_strip_16 (png_ptr); | |
5707 | ||
5708 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5709 | if available. */ | |
5710 | fn_png_set_expand (png_ptr); | |
5711 | ||
5712 | /* Convert grayscale images to RGB. */ | |
5713 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5714 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5715 | fn_png_set_gray_to_rgb (png_ptr); | |
5716 | ||
4ef0d4d0 KS |
5717 | /* Handle alpha channel by combining the image with a background |
5718 | color. Do this only if a real alpha channel is supplied. For | |
5719 | simple transparency, we prefer a clipping mask. */ | |
5720 | if (!transparent_p) | |
5721 | { | |
917ac1a9 | 5722 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5723 | Lisp_Object specified_bg |
5724 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5725 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5726 | |
5727 | if (STRINGP (specified_bg)) | |
5728 | /* The user specified `:background', use that. */ | |
5729 | { | |
4ef0d4d0 | 5730 | XColor color; |
42a5b22f | 5731 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5732 | { |
5733 | png_color_16 user_bg; | |
5734 | ||
72af86bd | 5735 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5736 | user_bg.red = color.red >> shift; |
5737 | user_bg.green = color.green >> shift; | |
5738 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5739 | |
5740 | fn_png_set_background (png_ptr, &user_bg, | |
5741 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5742 | } | |
5743 | } | |
4ef0d4d0 KS |
5744 | else |
5745 | { | |
c4f13f44 CY |
5746 | /* We use the current frame background, ignoring any default |
5747 | background color set by the image. */ | |
8b7d0a16 | 5748 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5749 | XColor color; |
5750 | png_color_16 frame_background; | |
5751 | ||
5752 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5753 | x_query_color (f, &color); | |
5754 | ||
72af86bd | 5755 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5756 | frame_background.red = color.red >> shift; |
5757 | frame_background.green = color.green >> shift; | |
5758 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5759 | #endif /* HAVE_X_WINDOWS */ |
5760 | ||
4ef0d4d0 KS |
5761 | fn_png_set_background (png_ptr, &frame_background, |
5762 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5763 | } | |
5764 | } | |
5765 | ||
5766 | /* Update info structure. */ | |
5767 | fn_png_read_update_info (png_ptr, info_ptr); | |
5768 | ||
5769 | /* Get number of channels. Valid values are 1 for grayscale images | |
5770 | and images with a palette, 2 for grayscale images with transparency | |
5771 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5772 | images with alpha channel, i.e. RGBA. If conversions above were | |
5773 | sufficient we should only have 3 or 4 channels here. */ | |
5774 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
a54e2c05 | 5775 | eassert (channels == 3 || channels == 4); |
4ef0d4d0 KS |
5776 | |
5777 | /* Number of bytes needed for one row of the image. */ | |
5778 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5779 | ||
5780 | /* Allocate memory for the image. */ | |
3f791afe PE |
5781 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height |
5782 | || min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes) | |
5783 | memory_full (SIZE_MAX); | |
40bce90b PE |
5784 | c->pixels = pixels = xmalloc (sizeof *pixels * row_bytes * height); |
5785 | c->rows = rows = xmalloc (height * sizeof *rows); | |
4ef0d4d0 KS |
5786 | for (i = 0; i < height; ++i) |
5787 | rows[i] = pixels + i * row_bytes; | |
5788 | ||
5789 | /* Read the entire image. */ | |
5790 | fn_png_read_image (png_ptr, rows); | |
5791 | fn_png_read_end (png_ptr, info_ptr); | |
5792 | if (fp) | |
5793 | { | |
5794 | fclose (fp); | |
40bce90b | 5795 | c->fp = NULL; |
4ef0d4d0 KS |
5796 | } |
5797 | ||
4ef0d4d0 KS |
5798 | /* Create an image and pixmap serving as mask if the PNG image |
5799 | contains an alpha channel. */ | |
5800 | if (channels == 4 | |
5801 | && !transparent_p | |
5802 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5803 | &mask_img, &img->mask)) | |
5804 | { | |
5805 | x_destroy_x_image (ximg); | |
5806 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5807 | img->pixmap = NO_PIXMAP; | |
5808 | goto error; | |
5809 | } | |
5810 | ||
5811 | /* Fill the X image and mask from PNG data. */ | |
5812 | init_color_table (); | |
5813 | ||
5814 | for (y = 0; y < height; ++y) | |
5815 | { | |
5816 | png_byte *p = rows[y]; | |
5817 | ||
5818 | for (x = 0; x < width; ++x) | |
5819 | { | |
13464394 | 5820 | int r, g, b; |
4ef0d4d0 KS |
5821 | |
5822 | r = *p++ << 8; | |
5823 | g = *p++ << 8; | |
5824 | b = *p++ << 8; | |
5825 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5826 | /* An alpha channel, aka mask channel, associates variable | |
5827 | transparency with an image. Where other image formats | |
5828 | support binary transparency---fully transparent or fully | |
5829 | opaque---PNG allows up to 254 levels of partial transparency. | |
5830 | The PNG library implements partial transparency by combining | |
5831 | the image with a specified background color. | |
5832 | ||
5833 | I'm not sure how to handle this here nicely: because the | |
5834 | background on which the image is displayed may change, for | |
5835 | real alpha channel support, it would be necessary to create | |
5836 | a new image for each possible background. | |
5837 | ||
5838 | What I'm doing now is that a mask is created if we have | |
5839 | boolean transparency information. Otherwise I'm using | |
5840 | the frame's background color to combine the image with. */ | |
5841 | ||
5842 | if (channels == 4) | |
5843 | { | |
5844 | if (mask_img) | |
9ecf6403 | 5845 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5846 | ++p; |
5847 | } | |
5848 | } | |
5849 | } | |
5850 | ||
5851 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5852 | /* Set IMG's background color from the PNG image, unless the user | |
5853 | overrode it. */ | |
5854 | { | |
5855 | png_color_16 *bg; | |
5856 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5857 | { | |
5858 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5859 | img->background_valid = 1; | |
5860 | } | |
5861 | } | |
5862 | ||
5863 | #ifdef COLOR_TABLE_SUPPORT | |
5864 | /* Remember colors allocated for this image. */ | |
5865 | img->colors = colors_in_color_table (&img->ncolors); | |
5866 | free_color_table (); | |
5867 | #endif /* COLOR_TABLE_SUPPORT */ | |
5868 | ||
5869 | /* Clean up. */ | |
40bce90b | 5870 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
4ef0d4d0 KS |
5871 | xfree (rows); |
5872 | xfree (pixels); | |
5873 | ||
5874 | img->width = width; | |
5875 | img->height = height; | |
5876 | ||
2e09fef1 EZ |
5877 | /* Maybe fill in the background field while we have ximg handy. |
5878 | Casting avoids a GCC warning. */ | |
5879 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5880 | |
5881 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5882 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5883 | x_destroy_x_image (ximg); | |
5884 | ||
5885 | /* Same for the mask. */ | |
5886 | if (mask_img) | |
5887 | { | |
2e09fef1 EZ |
5888 | /* Fill in the background_transparent field while we have the |
5889 | mask handy. Casting avoids a GCC warning. */ | |
5890 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5891 | |
5892 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5893 | x_destroy_x_image (mask_img); | |
5894 | } | |
5895 | ||
4ef0d4d0 KS |
5896 | return 1; |
5897 | } | |
5898 | ||
578098f3 | 5899 | static bool |
40bce90b PE |
5900 | png_load (struct frame *f, struct image *img) |
5901 | { | |
5902 | struct png_load_context c; | |
5903 | return png_load_body (f, img, &c); | |
5904 | } | |
5905 | ||
4ef0d4d0 KS |
5906 | #else /* HAVE_PNG */ |
5907 | ||
edfda783 | 5908 | #ifdef HAVE_NS |
578098f3 | 5909 | static bool |
edfda783 AR |
5910 | png_load (struct frame *f, struct image *img) |
5911 | { | |
5e617bc2 JB |
5912 | return ns_load_image (f, img, |
5913 | image_spec_value (img->spec, QCfile, NULL), | |
5914 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
5915 | } |
5916 | #endif /* HAVE_NS */ | |
5917 | ||
5918 | ||
4ef0d4d0 KS |
5919 | #endif /* !HAVE_PNG */ |
5920 | ||
5921 | ||
5922 | \f | |
5923 | /*********************************************************************** | |
5924 | JPEG | |
5925 | ***********************************************************************/ | |
5926 | ||
9e2a2647 | 5927 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5928 | |
578098f3 PE |
5929 | static bool jpeg_image_p (Lisp_Object object); |
5930 | static bool jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5931 | |
5932 | /* The symbol `jpeg' identifying images of this type. */ | |
5933 | ||
955cbe7b | 5934 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
5935 | |
5936 | /* Indices of image specification fields in gs_format, below. */ | |
5937 | ||
5938 | enum jpeg_keyword_index | |
5939 | { | |
5940 | JPEG_TYPE, | |
5941 | JPEG_DATA, | |
5942 | JPEG_FILE, | |
5943 | JPEG_ASCENT, | |
5944 | JPEG_MARGIN, | |
5945 | JPEG_RELIEF, | |
5946 | JPEG_ALGORITHM, | |
5947 | JPEG_HEURISTIC_MASK, | |
5948 | JPEG_MASK, | |
5949 | JPEG_BACKGROUND, | |
5950 | JPEG_LAST | |
5951 | }; | |
5952 | ||
5953 | /* Vector of image_keyword structures describing the format | |
5954 | of valid user-defined image specifications. */ | |
5955 | ||
91433552 | 5956 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
5957 | { |
5958 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5959 | {":data", IMAGE_STRING_VALUE, 0}, | |
5960 | {":file", IMAGE_STRING_VALUE, 0}, | |
5961 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5962 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5963 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5964 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5965 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5966 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5967 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5968 | }; | |
5969 | ||
a9e7a9d5 | 5970 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 5971 | static bool init_jpeg_functions (void); |
bb4d86b4 CY |
5972 | #else |
5973 | #define init_jpeg_functions NULL | |
5974 | #endif | |
5975 | ||
4ef0d4d0 KS |
5976 | /* Structure describing the image type `jpeg'. */ |
5977 | ||
5978 | static struct image_type jpeg_type = | |
5979 | { | |
5980 | &Qjpeg, | |
5981 | jpeg_image_p, | |
5982 | jpeg_load, | |
5983 | x_clear_image, | |
bb4d86b4 | 5984 | init_jpeg_functions, |
4ef0d4d0 KS |
5985 | NULL |
5986 | }; | |
5987 | ||
578098f3 | 5988 | /* Return true if OBJECT is a valid JPEG image specification. */ |
4ef0d4d0 | 5989 | |
578098f3 | 5990 | static bool |
d3da34e0 | 5991 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5992 | { |
5993 | struct image_keyword fmt[JPEG_LAST]; | |
5994 | ||
72af86bd | 5995 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
5996 | |
5997 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
5998 | return 0; | |
5999 | ||
6000 | /* Must specify either the :data or :file keyword. */ | |
6001 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6002 | } | |
6003 | ||
9e2a2647 | 6004 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6005 | |
6006 | #ifdef HAVE_JPEG | |
6007 | ||
6008 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6009 | jconfig.h. */ | |
6010 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6011 | #undef HAVE_STDLIB_H |
6012 | #endif /* HAVE_STLIB_H */ | |
6013 | ||
66354420 | 6014 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6015 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6016 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6017 | #define __WIN32__ 1 |
6018 | #endif | |
6019 | ||
93aa5c81 DC |
6020 | /* rpcndr.h (via windows.h) and jpeglib.h both define boolean types. |
6021 | Some versions of jpeglib try to detect whether rpcndr.h is loaded, | |
6022 | using the Windows boolean type instead of the jpeglib boolean type | |
6023 | if so. Cygwin jpeglib, however, doesn't try to detect whether its | |
6024 | headers are included along with windows.h, so under Cygwin, jpeglib | |
6025 | attempts to define a conflicting boolean type. Worse, forcing | |
6026 | Cygwin jpeglib headers to use the Windows boolean type doesn't work | |
6027 | because it created an ABI incompatibility between the | |
6028 | already-compiled jpeg library and the header interface definition. | |
6029 | ||
6030 | The best we can do is to define jpeglib's boolean type to a | |
6031 | different name. This name, jpeg_boolean, remains in effect through | |
6032 | the rest of image.c. | |
6033 | */ | |
a9e7a9d5 | 6034 | #if defined CYGWIN && defined HAVE_NTGUI |
0fda9b75 | 6035 | #define boolean jpeg_boolean |
2ae3a8a7 | 6036 | #endif |
4ef0d4d0 KS |
6037 | #include <jpeglib.h> |
6038 | #include <jerror.h> | |
4ef0d4d0 | 6039 | |
0fda9b75 | 6040 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6041 | |
6042 | /* JPEG library details. */ | |
14beddf4 CY |
6043 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6044 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6045 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6046 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6047 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6048 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6049 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6050 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 | 6051 | |
578098f3 | 6052 | static bool |
d07ff9db | 6053 | init_jpeg_functions (void) |
4ef0d4d0 KS |
6054 | { |
6055 | HMODULE library; | |
6056 | ||
d07ff9db | 6057 | if (!(library = w32_delayed_load (Qjpeg))) |
4ef0d4d0 KS |
6058 | return 0; |
6059 | ||
6060 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6061 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6062 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6063 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6064 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6065 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6066 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6067 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6068 | return 1; | |
6069 | } | |
6070 | ||
6071 | /* Wrapper since we can't directly assign the function pointer | |
6072 | to another function pointer that was declared more completely easily. */ | |
6073 | static boolean | |
7c3320d8 | 6074 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6075 | { |
6076 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6077 | } | |
6078 | ||
6079 | #else | |
6080 | ||
5e617bc2 | 6081 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress (a) |
4ef0d4d0 KS |
6082 | #define fn_jpeg_start_decompress jpeg_start_decompress |
6083 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6084 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6085 | #define fn_jpeg_read_header jpeg_read_header | |
6086 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6087 | #define fn_jpeg_std_error jpeg_std_error |
6088 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6089 | ||
0fda9b75 | 6090 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6091 | |
6092 | struct my_jpeg_error_mgr | |
6093 | { | |
6094 | struct jpeg_error_mgr pub; | |
0328b6de | 6095 | sys_jmp_buf setjmp_buffer; |
40bce90b | 6096 | |
0328b6de | 6097 | /* The remaining members are so that longjmp doesn't munge local |
40bce90b PE |
6098 | variables. */ |
6099 | struct jpeg_decompress_struct cinfo; | |
6100 | enum | |
6101 | { | |
6102 | MY_JPEG_ERROR_EXIT, | |
6103 | MY_JPEG_INVALID_IMAGE_SIZE, | |
6104 | MY_JPEG_CANNOT_CREATE_X | |
6105 | } failure_code; | |
5f0cb45a PE |
6106 | #ifdef lint |
6107 | FILE *fp; | |
6108 | #endif | |
4ef0d4d0 KS |
6109 | }; |
6110 | ||
6111 | ||
845ca893 | 6112 | static _Noreturn void |
d3da34e0 | 6113 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6114 | { |
6115 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
40bce90b | 6116 | mgr->failure_code = MY_JPEG_ERROR_EXIT; |
0328b6de | 6117 | sys_longjmp (mgr->setjmp_buffer, 1); |
4ef0d4d0 KS |
6118 | } |
6119 | ||
6120 | ||
6121 | /* Init source method for JPEG data source manager. Called by | |
6122 | jpeg_read_header() before any data is actually read. See | |
6123 | libjpeg.doc from the JPEG lib distribution. */ | |
6124 | ||
6125 | static void | |
d3da34e0 | 6126 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6127 | { |
6128 | } | |
6129 | ||
6130 | ||
6131 | /* Method to terminate data source. Called by | |
6132 | jpeg_finish_decompress() after all data has been processed. */ | |
6133 | ||
6134 | static void | |
d3da34e0 | 6135 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6136 | { |
6137 | } | |
6138 | ||
6139 | ||
6140 | /* Fill input buffer method for JPEG data source manager. Called | |
6141 | whenever more data is needed. We read the whole image in one step, | |
6142 | so this only adds a fake end of input marker at the end. */ | |
6143 | ||
5a1539f3 | 6144 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6145 | |
4ef0d4d0 | 6146 | static boolean |
d3da34e0 | 6147 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6148 | { |
6149 | /* Insert a fake EOI marker. */ | |
6150 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6151 | |
5a1539f3 MB |
6152 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6153 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6154 | |
5a1539f3 | 6155 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6156 | src->bytes_in_buffer = 2; |
e0e30823 | 6157 | return 1; |
4ef0d4d0 KS |
6158 | } |
6159 | ||
6160 | ||
6161 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6162 | is the JPEG data source manager. */ | |
6163 | ||
6164 | static void | |
d3da34e0 | 6165 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6166 | { |
6167 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6168 | ||
6169 | if (src) | |
6170 | { | |
6171 | if (num_bytes > src->bytes_in_buffer) | |
6172 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6173 | ||
6174 | src->bytes_in_buffer -= num_bytes; | |
6175 | src->next_input_byte += num_bytes; | |
6176 | } | |
6177 | } | |
6178 | ||
6179 | ||
4ef0d4d0 KS |
6180 | /* Set up the JPEG lib for reading an image from DATA which contains |
6181 | LEN bytes. CINFO is the decompression info structure created for | |
6182 | reading the image. */ | |
6183 | ||
6184 | static void | |
92547ff9 | 6185 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, ptrdiff_t len) |
4ef0d4d0 KS |
6186 | { |
6187 | struct jpeg_source_mgr *src; | |
6188 | ||
6189 | if (cinfo->src == NULL) | |
6190 | { | |
6191 | /* First time for this JPEG object? */ | |
6192 | cinfo->src = (struct jpeg_source_mgr *) | |
6193 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6194 | sizeof (struct jpeg_source_mgr)); | |
6195 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6196 | src->next_input_byte = data; | |
6197 | } | |
6198 | ||
6199 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6200 | src->init_source = our_common_init_source; |
6201 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6202 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6203 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6204 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6205 | src->bytes_in_buffer = len; |
6206 | src->next_input_byte = data; | |
6207 | } | |
6208 | ||
6209 | ||
b25a72ab JB |
6210 | struct jpeg_stdio_mgr |
6211 | { | |
6212 | struct jpeg_source_mgr mgr; | |
6213 | boolean finished; | |
6214 | FILE *file; | |
6215 | JOCTET *buffer; | |
6216 | }; | |
6217 | ||
6218 | ||
6219 | /* Size of buffer to read JPEG from file. | |
6220 | Not too big, as we want to use alloc_small. */ | |
6221 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6222 | ||
6223 | ||
6224 | /* Fill input buffer method for JPEG data source manager. Called | |
6225 | whenever more data is needed. The data is read from a FILE *. */ | |
6226 | ||
6227 | static boolean | |
d3da34e0 | 6228 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6229 | { |
6230 | struct jpeg_stdio_mgr *src; | |
6231 | ||
6232 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6233 | if (!src->finished) | |
6234 | { | |
3f791afe | 6235 | ptrdiff_t bytes; |
b25a72ab JB |
6236 | |
6237 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6238 | if (bytes > 0) | |
6239 | src->mgr.bytes_in_buffer = bytes; | |
6240 | else | |
6241 | { | |
6242 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6243 | src->finished = 1; | |
6244 | src->buffer[0] = (JOCTET) 0xFF; | |
6245 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6246 | src->mgr.bytes_in_buffer = 2; | |
6247 | } | |
6248 | src->mgr.next_input_byte = src->buffer; | |
6249 | } | |
6250 | ||
6251 | return 1; | |
6252 | } | |
6253 | ||
6254 | ||
6255 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6256 | is the JPEG data source manager. */ | |
6257 | ||
6258 | static void | |
d3da34e0 | 6259 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6260 | { |
6261 | struct jpeg_stdio_mgr *src; | |
6262 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6263 | ||
6264 | while (num_bytes > 0 && !src->finished) | |
6265 | { | |
6266 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6267 | { | |
6268 | src->mgr.bytes_in_buffer -= num_bytes; | |
6269 | src->mgr.next_input_byte += num_bytes; | |
6270 | break; | |
6271 | } | |
6272 | else | |
6273 | { | |
6274 | num_bytes -= src->mgr.bytes_in_buffer; | |
6275 | src->mgr.bytes_in_buffer = 0; | |
6276 | src->mgr.next_input_byte = NULL; | |
6277 | ||
6278 | our_stdio_fill_input_buffer (cinfo); | |
6279 | } | |
6280 | } | |
6281 | } | |
6282 | ||
6283 | ||
6284 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6285 | CINFO is the decompression info structure created for | |
6286 | reading the image. */ | |
6287 | ||
6288 | static void | |
d3da34e0 | 6289 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6290 | { |
6291 | struct jpeg_stdio_mgr *src; | |
6292 | ||
6293 | if (cinfo->src != NULL) | |
6294 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6295 | else | |
6296 | { | |
6297 | /* First time for this JPEG object? */ | |
6298 | cinfo->src = (struct jpeg_source_mgr *) | |
6299 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6300 | sizeof (struct jpeg_stdio_mgr)); | |
6301 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6302 | src->buffer = (JOCTET *) | |
6303 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6304 | JPEG_STDIO_BUFFER_SIZE); | |
6305 | } | |
6306 | ||
6307 | src->file = fp; | |
6308 | src->finished = 0; | |
6309 | src->mgr.init_source = our_common_init_source; | |
6310 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6311 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6312 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6313 | src->mgr.term_source = our_common_term_source; | |
6314 | src->mgr.bytes_in_buffer = 0; | |
6315 | src->mgr.next_input_byte = NULL; | |
6316 | } | |
6317 | ||
6318 | ||
4ef0d4d0 KS |
6319 | /* Load image IMG for use on frame F. Patterned after example.c |
6320 | from the JPEG lib. */ | |
6321 | ||
578098f3 | 6322 | static bool |
40bce90b PE |
6323 | jpeg_load_body (struct frame *f, struct image *img, |
6324 | struct my_jpeg_error_mgr *mgr) | |
4ef0d4d0 | 6325 | { |
4ef0d4d0 KS |
6326 | Lisp_Object file, specified_file; |
6327 | Lisp_Object specified_data; | |
40bce90b | 6328 | FILE *fp = NULL; |
4ef0d4d0 KS |
6329 | JSAMPARRAY buffer; |
6330 | int row_stride, x, y; | |
6331 | XImagePtr ximg = NULL; | |
4ef0d4d0 KS |
6332 | unsigned long *colors; |
6333 | int width, height; | |
4ef0d4d0 KS |
6334 | |
6335 | /* Open the JPEG file. */ | |
6336 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6337 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6338 | |
6339 | if (NILP (specified_data)) | |
6340 | { | |
6341 | file = x_find_image_file (specified_file); | |
6342 | if (!STRINGP (file)) | |
6343 | { | |
6344 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6345 | return 0; |
6346 | } | |
6347 | ||
42a5b22f | 6348 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6349 | if (fp == NULL) |
6350 | { | |
6351 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6352 | return 0; |
6353 | } | |
6354 | } | |
7574650a AS |
6355 | else if (!STRINGP (specified_data)) |
6356 | { | |
6357 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6358 | return 0; | |
6359 | } | |
4ef0d4d0 | 6360 | |
5f0cb45a PE |
6361 | IF_LINT (mgr->fp = fp); |
6362 | ||
4ef0d4d0 | 6363 | /* Customize libjpeg's error handling to call my_error_exit when an |
df61c790 | 6364 | error is detected. This function will perform a longjmp. */ |
40bce90b PE |
6365 | mgr->cinfo.err = fn_jpeg_std_error (&mgr->pub); |
6366 | mgr->pub.error_exit = my_error_exit; | |
0328b6de | 6367 | if (sys_setjmp (mgr->setjmp_buffer)) |
4ef0d4d0 | 6368 | { |
40bce90b | 6369 | switch (mgr->failure_code) |
4ef0d4d0 | 6370 | { |
40bce90b PE |
6371 | case MY_JPEG_ERROR_EXIT: |
6372 | { | |
6373 | char buf[JMSG_LENGTH_MAX]; | |
6374 | mgr->cinfo.err->format_message ((j_common_ptr) &mgr->cinfo, buf); | |
6375 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
6376 | build_string (buf)); | |
6377 | break; | |
6378 | } | |
6379 | ||
6380 | case MY_JPEG_INVALID_IMAGE_SIZE: | |
6381 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
6382 | break; | |
6383 | ||
6384 | case MY_JPEG_CANNOT_CREATE_X: | |
6385 | break; | |
4ef0d4d0 KS |
6386 | } |
6387 | ||
6388 | /* Close the input file and destroy the JPEG object. */ | |
6389 | if (fp) | |
40bce90b PE |
6390 | fclose (fp); |
6391 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 KS |
6392 | |
6393 | /* If we already have an XImage, free that. */ | |
6394 | x_destroy_x_image (ximg); | |
6395 | ||
6396 | /* Free pixmap and colors. */ | |
6397 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6398 | return 0; |
6399 | } | |
6400 | ||
5f0cb45a PE |
6401 | /* Silence a bogus diagnostic; see GCC bug 54561. */ |
6402 | IF_LINT (fp = mgr->fp); | |
6403 | ||
4ef0d4d0 KS |
6404 | /* Create the JPEG decompression object. Let it read from fp. |
6405 | Read the JPEG image header. */ | |
40bce90b | 6406 | fn_jpeg_CreateDecompress (&mgr->cinfo, JPEG_LIB_VERSION, sizeof *&mgr->cinfo); |
4ef0d4d0 KS |
6407 | |
6408 | if (NILP (specified_data)) | |
40bce90b | 6409 | jpeg_file_src (&mgr->cinfo, fp); |
4ef0d4d0 | 6410 | else |
40bce90b | 6411 | jpeg_memory_src (&mgr->cinfo, SDATA (specified_data), |
4ef0d4d0 KS |
6412 | SBYTES (specified_data)); |
6413 | ||
40bce90b | 6414 | fn_jpeg_read_header (&mgr->cinfo, 1); |
4ef0d4d0 KS |
6415 | |
6416 | /* Customize decompression so that color quantization will be used. | |
6417 | Start decompression. */ | |
40bce90b PE |
6418 | mgr->cinfo.quantize_colors = 1; |
6419 | fn_jpeg_start_decompress (&mgr->cinfo); | |
6420 | width = img->width = mgr->cinfo.output_width; | |
6421 | height = img->height = mgr->cinfo.output_height; | |
4ef0d4d0 | 6422 | |
f1f25b99 CY |
6423 | if (!check_image_size (f, width, height)) |
6424 | { | |
40bce90b | 6425 | mgr->failure_code = MY_JPEG_INVALID_IMAGE_SIZE; |
0328b6de | 6426 | sys_longjmp (mgr->setjmp_buffer, 1); |
f1f25b99 CY |
6427 | } |
6428 | ||
4ef0d4d0 KS |
6429 | /* Create X image and pixmap. */ |
6430 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
40bce90b PE |
6431 | { |
6432 | mgr->failure_code = MY_JPEG_CANNOT_CREATE_X; | |
0328b6de | 6433 | sys_longjmp (mgr->setjmp_buffer, 1); |
40bce90b | 6434 | } |
4ef0d4d0 KS |
6435 | |
6436 | /* Allocate colors. When color quantization is used, | |
40bce90b PE |
6437 | mgr->cinfo.actual_number_of_colors has been set with the number of |
6438 | colors generated, and mgr->cinfo.colormap is a two-dimensional array | |
6439 | of color indices in the range 0..mgr->cinfo.actual_number_of_colors. | |
4ef0d4d0 KS |
6440 | No more than 255 colors will be generated. */ |
6441 | { | |
6442 | int i, ir, ig, ib; | |
6443 | ||
40bce90b | 6444 | if (mgr->cinfo.out_color_components > 2) |
4ef0d4d0 | 6445 | ir = 0, ig = 1, ib = 2; |
40bce90b | 6446 | else if (mgr->cinfo.out_color_components > 1) |
4ef0d4d0 KS |
6447 | ir = 0, ig = 1, ib = 0; |
6448 | else | |
6449 | ir = 0, ig = 0, ib = 0; | |
6450 | ||
6451 | /* Use the color table mechanism because it handles colors that | |
6452 | cannot be allocated nicely. Such colors will be replaced with | |
6453 | a default color, and we don't have to care about which colors | |
6454 | can be freed safely, and which can't. */ | |
6455 | init_color_table (); | |
40bce90b | 6456 | colors = alloca (mgr->cinfo.actual_number_of_colors * sizeof *colors); |
4ef0d4d0 | 6457 | |
40bce90b | 6458 | for (i = 0; i < mgr->cinfo.actual_number_of_colors; ++i) |
4ef0d4d0 KS |
6459 | { |
6460 | /* Multiply RGB values with 255 because X expects RGB values | |
6461 | in the range 0..0xffff. */ | |
40bce90b PE |
6462 | int r = mgr->cinfo.colormap[ir][i] << 8; |
6463 | int g = mgr->cinfo.colormap[ig][i] << 8; | |
6464 | int b = mgr->cinfo.colormap[ib][i] << 8; | |
4ef0d4d0 KS |
6465 | colors[i] = lookup_rgb_color (f, r, g, b); |
6466 | } | |
6467 | ||
6468 | #ifdef COLOR_TABLE_SUPPORT | |
6469 | /* Remember those colors actually allocated. */ | |
6470 | img->colors = colors_in_color_table (&img->ncolors); | |
6471 | free_color_table (); | |
6472 | #endif /* COLOR_TABLE_SUPPORT */ | |
6473 | } | |
6474 | ||
6475 | /* Read pixels. */ | |
40bce90b PE |
6476 | row_stride = width * mgr->cinfo.output_components; |
6477 | buffer = mgr->cinfo.mem->alloc_sarray ((j_common_ptr) &mgr->cinfo, | |
6478 | JPOOL_IMAGE, row_stride, 1); | |
4ef0d4d0 KS |
6479 | for (y = 0; y < height; ++y) |
6480 | { | |
40bce90b PE |
6481 | fn_jpeg_read_scanlines (&mgr->cinfo, buffer, 1); |
6482 | for (x = 0; x < mgr->cinfo.output_width; ++x) | |
4ef0d4d0 KS |
6483 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); |
6484 | } | |
6485 | ||
6486 | /* Clean up. */ | |
40bce90b PE |
6487 | fn_jpeg_finish_decompress (&mgr->cinfo); |
6488 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 | 6489 | if (fp) |
40bce90b | 6490 | fclose (fp); |
4ef0d4d0 KS |
6491 | |
6492 | /* Maybe fill in the background field while we have ximg handy. */ | |
6493 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6494 | /* Casting avoids a GCC warning. */ |
6495 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6496 | |
6497 | /* Put the image into the pixmap. */ | |
6498 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6499 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6500 | return 1; |
6501 | } | |
6502 | ||
578098f3 | 6503 | static bool |
40bce90b PE |
6504 | jpeg_load (struct frame *f, struct image *img) |
6505 | { | |
6506 | struct my_jpeg_error_mgr mgr; | |
6507 | return jpeg_load_body (f, img, &mgr); | |
6508 | } | |
6509 | ||
4ef0d4d0 KS |
6510 | #else /* HAVE_JPEG */ |
6511 | ||
edfda783 | 6512 | #ifdef HAVE_NS |
578098f3 | 6513 | static bool |
edfda783 AR |
6514 | jpeg_load (struct frame *f, struct image *img) |
6515 | { | |
ed3751c8 JB |
6516 | return ns_load_image (f, img, |
6517 | image_spec_value (img->spec, QCfile, NULL), | |
6518 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6519 | } |
6520 | #endif /* HAVE_NS */ | |
6521 | ||
4ef0d4d0 KS |
6522 | #endif /* !HAVE_JPEG */ |
6523 | ||
6524 | ||
6525 | \f | |
6526 | /*********************************************************************** | |
6527 | TIFF | |
6528 | ***********************************************************************/ | |
6529 | ||
9e2a2647 | 6530 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6531 | |
578098f3 PE |
6532 | static bool tiff_image_p (Lisp_Object object); |
6533 | static bool tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6534 | |
6535 | /* The symbol `tiff' identifying images of this type. */ | |
6536 | ||
955cbe7b | 6537 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6538 | |
6539 | /* Indices of image specification fields in tiff_format, below. */ | |
6540 | ||
6541 | enum tiff_keyword_index | |
6542 | { | |
6543 | TIFF_TYPE, | |
6544 | TIFF_DATA, | |
6545 | TIFF_FILE, | |
6546 | TIFF_ASCENT, | |
6547 | TIFF_MARGIN, | |
6548 | TIFF_RELIEF, | |
6549 | TIFF_ALGORITHM, | |
6550 | TIFF_HEURISTIC_MASK, | |
6551 | TIFF_MASK, | |
6552 | TIFF_BACKGROUND, | |
58279503 | 6553 | TIFF_INDEX, |
4ef0d4d0 KS |
6554 | TIFF_LAST |
6555 | }; | |
6556 | ||
6557 | /* Vector of image_keyword structures describing the format | |
6558 | of valid user-defined image specifications. */ | |
6559 | ||
91433552 | 6560 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6561 | { |
6562 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6563 | {":data", IMAGE_STRING_VALUE, 0}, | |
6564 | {":file", IMAGE_STRING_VALUE, 0}, | |
6565 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6566 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6567 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6568 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6569 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6570 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6571 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6572 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6573 | }; |
6574 | ||
33d4113c | 6575 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 6576 | static bool init_tiff_functions (void); |
bb4d86b4 CY |
6577 | #else |
6578 | #define init_tiff_functions NULL | |
6579 | #endif | |
6580 | ||
4ef0d4d0 KS |
6581 | /* Structure describing the image type `tiff'. */ |
6582 | ||
6583 | static struct image_type tiff_type = | |
6584 | { | |
6585 | &Qtiff, | |
6586 | tiff_image_p, | |
6587 | tiff_load, | |
6588 | x_clear_image, | |
bb4d86b4 | 6589 | init_tiff_functions, |
4ef0d4d0 KS |
6590 | NULL |
6591 | }; | |
6592 | ||
578098f3 | 6593 | /* Return true if OBJECT is a valid TIFF image specification. */ |
4ef0d4d0 | 6594 | |
578098f3 | 6595 | static bool |
d3da34e0 | 6596 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6597 | { |
6598 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6599 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6600 | |
6601 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6602 | return 0; | |
6603 | ||
6604 | /* Must specify either the :data or :file keyword. */ | |
6605 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6606 | } | |
6607 | ||
9e2a2647 | 6608 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6609 | |
6610 | #ifdef HAVE_TIFF | |
6611 | ||
6612 | #include <tiffio.h> | |
6613 | ||
0fda9b75 | 6614 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6615 | |
6616 | /* TIFF library details. */ | |
14beddf4 CY |
6617 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6618 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6619 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6620 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6621 | TIFFReadWriteProc, TIFFReadWriteProc, |
6622 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6623 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6624 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6625 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6626 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6627 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 | 6628 | |
578098f3 | 6629 | static bool |
d07ff9db | 6630 | init_tiff_functions (void) |
4ef0d4d0 KS |
6631 | { |
6632 | HMODULE library; | |
6633 | ||
d07ff9db | 6634 | if (!(library = w32_delayed_load (Qtiff))) |
4ef0d4d0 KS |
6635 | return 0; |
6636 | ||
6637 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6638 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6639 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6640 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6641 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6642 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6643 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6644 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6645 | return 1; |
6646 | } | |
6647 | ||
6648 | #else | |
6649 | ||
6650 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6651 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6652 | #define fn_TIFFOpen TIFFOpen | |
6653 | #define fn_TIFFClientOpen TIFFClientOpen | |
6654 | #define fn_TIFFGetField TIFFGetField | |
6655 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6656 | #define fn_TIFFClose TIFFClose | |
58279503 | 6657 | #define fn_TIFFSetDirectory TIFFSetDirectory |
0fda9b75 | 6658 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6659 | |
6660 | ||
6661 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6662 | memory source, but we have to provide a lot of extra functions. | |
6663 | Blah. | |
6664 | ||
6665 | We really only need to implement read and seek, but I am not | |
6666 | convinced that the TIFF library is smart enough not to destroy | |
6667 | itself if we only hand it the function pointers we need to | |
6668 | override. */ | |
6669 | ||
6670 | typedef struct | |
6671 | { | |
6672 | unsigned char *bytes; | |
3f791afe PE |
6673 | ptrdiff_t len; |
6674 | ptrdiff_t index; | |
4ef0d4d0 KS |
6675 | } |
6676 | tiff_memory_source; | |
6677 | ||
3f791afe | 6678 | static tsize_t |
d3da34e0 | 6679 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6680 | { |
6681 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6682 | ||
3f791afe | 6683 | size = min (size, src->len - src->index); |
72af86bd | 6684 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6685 | src->index += size; |
6686 | return size; | |
6687 | } | |
6688 | ||
3f791afe | 6689 | static tsize_t |
d3da34e0 | 6690 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 | 6691 | { |
3f791afe | 6692 | return -1; |
4ef0d4d0 KS |
6693 | } |
6694 | ||
6695 | static toff_t | |
d3da34e0 | 6696 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6697 | { |
6698 | tiff_memory_source *src = (tiff_memory_source *) data; | |
3f791afe | 6699 | ptrdiff_t idx; |
4ef0d4d0 KS |
6700 | |
6701 | switch (whence) | |
6702 | { | |
6703 | case SEEK_SET: /* Go from beginning of source. */ | |
6704 | idx = off; | |
6705 | break; | |
6706 | ||
6707 | case SEEK_END: /* Go from end of source. */ | |
6708 | idx = src->len + off; | |
6709 | break; | |
6710 | ||
6711 | case SEEK_CUR: /* Go from current position. */ | |
6712 | idx = src->index + off; | |
6713 | break; | |
6714 | ||
6715 | default: /* Invalid `whence'. */ | |
6716 | return -1; | |
6717 | } | |
6718 | ||
6719 | if (idx > src->len || idx < 0) | |
6720 | return -1; | |
6721 | ||
6722 | src->index = idx; | |
6723 | return src->index; | |
6724 | } | |
6725 | ||
6726 | static int | |
d3da34e0 | 6727 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6728 | { |
6729 | /* NOOP */ | |
6730 | return 0; | |
6731 | } | |
6732 | ||
6733 | static int | |
d3da34e0 | 6734 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6735 | { |
6736 | /* It is already _IN_ memory. */ | |
6737 | return 0; | |
6738 | } | |
6739 | ||
6740 | static void | |
d3da34e0 | 6741 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6742 | { |
6743 | /* We don't need to do this. */ | |
6744 | } | |
6745 | ||
6746 | static toff_t | |
d3da34e0 | 6747 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6748 | { |
6749 | return ((tiff_memory_source *) data)->len; | |
6750 | } | |
6751 | ||
b41c3a35 EZ |
6752 | /* GCC 3.x on x86 Windows targets has a bug that triggers an internal |
6753 | compiler error compiling tiff_handler, see Bugzilla bug #17406 | |
6754 | (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17406). Declaring | |
6755 | this function as external works around that problem. */ | |
6756 | #if defined (__MINGW32__) && __GNUC__ == 3 | |
6757 | # define MINGW_STATIC | |
6758 | #else | |
6759 | # define MINGW_STATIC static | |
6760 | #endif | |
4ef0d4d0 | 6761 | |
b41c3a35 EZ |
6762 | MINGW_STATIC void |
6763 | tiff_handler (const char *, const char *, const char *, va_list) | |
13464394 | 6764 | ATTRIBUTE_FORMAT_PRINTF (3, 0); |
b41c3a35 | 6765 | MINGW_STATIC void |
13464394 PE |
6766 | tiff_handler (const char *log_format, const char *title, |
6767 | const char *format, va_list ap) | |
6768 | { | |
6769 | /* doprnt is not suitable here, as TIFF handlers are called from | |
6770 | libtiff and are passed arbitrary printf directives. Instead, use | |
6771 | vsnprintf, taking care to be portable to nonstandard environments | |
6772 | where vsnprintf returns -1 on buffer overflow. Since it's just a | |
6773 | log entry, it's OK to truncate it. */ | |
6774 | char buf[4000]; | |
6775 | int len = vsnprintf (buf, sizeof buf, format, ap); | |
6776 | add_to_log (log_format, build_string (title), | |
6777 | make_string (buf, max (0, min (len, sizeof buf - 1)))); | |
6778 | } | |
b41c3a35 | 6779 | #undef MINGW_STATIC |
13464394 | 6780 | |
5e2d4a30 PE |
6781 | static void tiff_error_handler (const char *, const char *, va_list) |
6782 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6783 | static void |
d3da34e0 | 6784 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6785 | { |
13464394 | 6786 | tiff_handler ("TIFF error: %s %s", title, format, ap); |
4ef0d4d0 KS |
6787 | } |
6788 | ||
6789 | ||
5e2d4a30 PE |
6790 | static void tiff_warning_handler (const char *, const char *, va_list) |
6791 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6792 | static void |
d3da34e0 | 6793 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6794 | { |
13464394 | 6795 | tiff_handler ("TIFF warning: %s %s", title, format, ap); |
4ef0d4d0 KS |
6796 | } |
6797 | ||
6798 | ||
578098f3 | 6799 | /* Load TIFF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
6800 | successful. */ |
6801 | ||
578098f3 | 6802 | static bool |
d3da34e0 | 6803 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6804 | { |
6805 | Lisp_Object file, specified_file; | |
6806 | Lisp_Object specified_data; | |
6807 | TIFF *tiff; | |
58279503 | 6808 | int width, height, x, y, count; |
4ef0d4d0 | 6809 | uint32 *buf; |
03d0a109 | 6810 | int rc; |
4ef0d4d0 | 6811 | XImagePtr ximg; |
4ef0d4d0 | 6812 | tiff_memory_source memsrc; |
58279503 | 6813 | Lisp_Object image; |
4ef0d4d0 KS |
6814 | |
6815 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6816 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6817 | |
5e2d4a30 PE |
6818 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6819 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6820 | |
6821 | if (NILP (specified_data)) | |
6822 | { | |
6823 | /* Read from a file */ | |
6824 | file = x_find_image_file (specified_file); | |
6825 | if (!STRINGP (file)) | |
6826 | { | |
6827 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6828 | return 0; |
6829 | } | |
6830 | ||
df61c790 | 6831 | /* Try to open the image file. */ |
b19beacc | 6832 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6833 | if (tiff == NULL) |
6834 | { | |
6835 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6836 | return 0; |
6837 | } | |
6838 | } | |
6839 | else | |
6840 | { | |
7574650a AS |
6841 | if (!STRINGP (specified_data)) |
6842 | { | |
6843 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6844 | return 0; | |
6845 | } | |
6846 | ||
4ef0d4d0 KS |
6847 | /* Memory source! */ |
6848 | memsrc.bytes = SDATA (specified_data); | |
6849 | memsrc.len = SBYTES (specified_data); | |
6850 | memsrc.index = 0; | |
6851 | ||
3082f617 | 6852 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
3f791afe PE |
6853 | tiff_read_from_memory, |
6854 | tiff_write_from_memory, | |
df61c790 AS |
6855 | tiff_seek_in_memory, |
6856 | tiff_close_memory, | |
6857 | tiff_size_of_memory, | |
6858 | tiff_mmap_memory, | |
6859 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6860 | |
6861 | if (!tiff) | |
6862 | { | |
6863 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6864 | return 0; |
6865 | } | |
6866 | } | |
6867 | ||
58279503 JR |
6868 | image = image_spec_value (img->spec, QCindex, NULL); |
6869 | if (INTEGERP (image)) | |
6870 | { | |
13464394 PE |
6871 | EMACS_INT ino = XFASTINT (image); |
6872 | if (! (TYPE_MINIMUM (tdir_t) <= ino && ino <= TYPE_MAXIMUM (tdir_t) | |
6873 | && fn_TIFFSetDirectory (tiff, ino))) | |
58279503 JR |
6874 | { |
6875 | image_error ("Invalid image number `%s' in image `%s'", | |
6876 | image, img->spec); | |
6877 | fn_TIFFClose (tiff); | |
58279503 JR |
6878 | return 0; |
6879 | } | |
6880 | } | |
6881 | ||
4ef0d4d0 KS |
6882 | /* Get width and height of the image, and allocate a raster buffer |
6883 | of width x height 32-bit values. */ | |
6884 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6885 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6886 | |
6887 | if (!check_image_size (f, width, height)) | |
6888 | { | |
10ea2b82 | 6889 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6890 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6891 | return 0; |
6892 | } | |
6893 | ||
ca4aa935 PE |
6894 | /* Create the X image and pixmap. */ |
6895 | if (! (height <= min (PTRDIFF_MAX, SIZE_MAX) / sizeof *buf / width | |
6896 | && x_create_x_image_and_pixmap (f, width, height, 0, | |
6897 | &ximg, &img->pixmap))) | |
6898 | { | |
6899 | fn_TIFFClose (tiff); | |
6900 | return 0; | |
6901 | } | |
6902 | ||
23f86fce | 6903 | buf = xmalloc (sizeof *buf * width * height); |
4ef0d4d0 KS |
6904 | |
6905 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6906 | |
6907 | /* Count the number of images in the file. */ | |
03d0a109 PE |
6908 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
6909 | continue; | |
58279503 JR |
6910 | |
6911 | if (count > 1) | |
b50691aa CY |
6912 | img->lisp_data = Fcons (Qcount, |
6913 | Fcons (make_number (count), | |
6914 | img->lisp_data)); | |
58279503 | 6915 | |
4ef0d4d0 KS |
6916 | fn_TIFFClose (tiff); |
6917 | if (!rc) | |
6918 | { | |
6919 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6920 | xfree (buf); | |
4ef0d4d0 KS |
6921 | return 0; |
6922 | } | |
6923 | ||
4ef0d4d0 KS |
6924 | /* Initialize the color table. */ |
6925 | init_color_table (); | |
6926 | ||
6927 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6928 | for (y = 0; y < height; ++y) | |
6929 | { | |
6930 | uint32 *row = buf + y * width; | |
6931 | ||
6932 | for (x = 0; x < width; ++x) | |
6933 | { | |
6934 | uint32 abgr = row[x]; | |
6935 | int r = TIFFGetR (abgr) << 8; | |
6936 | int g = TIFFGetG (abgr) << 8; | |
6937 | int b = TIFFGetB (abgr) << 8; | |
6938 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6939 | } | |
6940 | } | |
6941 | ||
6942 | #ifdef COLOR_TABLE_SUPPORT | |
6943 | /* Remember the colors allocated for the image. Free the color table. */ | |
6944 | img->colors = colors_in_color_table (&img->ncolors); | |
6945 | free_color_table (); | |
6946 | #endif /* COLOR_TABLE_SUPPORT */ | |
6947 | ||
6948 | img->width = width; | |
6949 | img->height = height; | |
6950 | ||
6951 | /* Maybe fill in the background field while we have ximg handy. */ | |
6952 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6953 | /* Casting avoids a GCC warning on W32. */ |
6954 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6955 | |
6956 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6957 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6958 | x_destroy_x_image (ximg); | |
6959 | xfree (buf); | |
6960 | ||
4ef0d4d0 KS |
6961 | return 1; |
6962 | } | |
6963 | ||
6964 | #else /* HAVE_TIFF */ | |
6965 | ||
edfda783 | 6966 | #ifdef HAVE_NS |
578098f3 | 6967 | static bool |
edfda783 AR |
6968 | tiff_load (struct frame *f, struct image *img) |
6969 | { | |
ed3751c8 JB |
6970 | return ns_load_image (f, img, |
6971 | image_spec_value (img->spec, QCfile, NULL), | |
6972 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6973 | } |
6974 | #endif /* HAVE_NS */ | |
6975 | ||
4ef0d4d0 KS |
6976 | #endif /* !HAVE_TIFF */ |
6977 | ||
6978 | ||
6979 | \f | |
6980 | /*********************************************************************** | |
6981 | GIF | |
6982 | ***********************************************************************/ | |
6983 | ||
9e2a2647 | 6984 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 6985 | |
578098f3 PE |
6986 | static bool gif_image_p (Lisp_Object object); |
6987 | static bool gif_load (struct frame *f, struct image *img); | |
f57e2426 | 6988 | static void gif_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
6989 | |
6990 | /* The symbol `gif' identifying images of this type. */ | |
6991 | ||
955cbe7b | 6992 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
6993 | |
6994 | /* Indices of image specification fields in gif_format, below. */ | |
6995 | ||
6996 | enum gif_keyword_index | |
6997 | { | |
6998 | GIF_TYPE, | |
6999 | GIF_DATA, | |
7000 | GIF_FILE, | |
7001 | GIF_ASCENT, | |
7002 | GIF_MARGIN, | |
7003 | GIF_RELIEF, | |
7004 | GIF_ALGORITHM, | |
7005 | GIF_HEURISTIC_MASK, | |
7006 | GIF_MASK, | |
7007 | GIF_IMAGE, | |
7008 | GIF_BACKGROUND, | |
7009 | GIF_LAST | |
7010 | }; | |
7011 | ||
7012 | /* Vector of image_keyword structures describing the format | |
7013 | of valid user-defined image specifications. */ | |
7014 | ||
91433552 | 7015 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
7016 | { |
7017 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7018 | {":data", IMAGE_STRING_VALUE, 0}, | |
7019 | {":file", IMAGE_STRING_VALUE, 0}, | |
7020 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7021 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
7022 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7023 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7024 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7025 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 7026 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
7027 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
7028 | }; | |
7029 | ||
a9e7a9d5 | 7030 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 7031 | static bool init_gif_functions (void); |
bb4d86b4 CY |
7032 | #else |
7033 | #define init_gif_functions NULL | |
7034 | #endif | |
7035 | ||
4ef0d4d0 KS |
7036 | /* Structure describing the image type `gif'. */ |
7037 | ||
7038 | static struct image_type gif_type = | |
7039 | { | |
7040 | &Qgif, | |
7041 | gif_image_p, | |
7042 | gif_load, | |
6ac3c7bb | 7043 | gif_clear_image, |
bb4d86b4 | 7044 | init_gif_functions, |
4ef0d4d0 KS |
7045 | NULL |
7046 | }; | |
7047 | ||
6ac3c7bb KS |
7048 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7049 | ||
7050 | static void | |
d3da34e0 | 7051 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 7052 | { |
b50691aa | 7053 | img->lisp_data = Qnil; |
6ac3c7bb KS |
7054 | x_clear_image (f, img); |
7055 | } | |
7056 | ||
578098f3 | 7057 | /* Return true if OBJECT is a valid GIF image specification. */ |
4ef0d4d0 | 7058 | |
578098f3 | 7059 | static bool |
d3da34e0 | 7060 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
7061 | { |
7062 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 7063 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7064 | |
7065 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7066 | return 0; | |
7067 | ||
7068 | /* Must specify either the :data or :file keyword. */ | |
7069 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7070 | } | |
7071 | ||
9e2a2647 | 7072 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7073 | |
7074 | #ifdef HAVE_GIF | |
7075 | ||
9e2a2647 | 7076 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
7077 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7078 | Undefine before redefining to avoid a preprocessor warning. */ | |
7079 | #ifdef DrawText | |
7080 | #undef DrawText | |
7081 | #endif | |
4ef0d4d0 KS |
7082 | /* avoid conflict with QuickdrawText.h */ |
7083 | #define DrawText gif_DrawText | |
7084 | #include <gif_lib.h> | |
7085 | #undef DrawText | |
7086 | ||
9e2a2647 | 7087 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7088 | |
7089 | #include <gif_lib.h> | |
7090 | ||
9e2a2647 | 7091 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7092 | |
7093 | ||
0fda9b75 | 7094 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
7095 | |
7096 | /* GIF library details. */ | |
14beddf4 CY |
7097 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7098 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7099 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7100 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 | 7101 | |
578098f3 | 7102 | static bool |
d07ff9db | 7103 | init_gif_functions (void) |
4ef0d4d0 KS |
7104 | { |
7105 | HMODULE library; | |
7106 | ||
d07ff9db | 7107 | if (!(library = w32_delayed_load (Qgif))) |
4ef0d4d0 KS |
7108 | return 0; |
7109 | ||
7110 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7111 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7112 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7113 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7114 | return 1; | |
7115 | } | |
7116 | ||
7117 | #else | |
7118 | ||
7119 | #define fn_DGifCloseFile DGifCloseFile | |
7120 | #define fn_DGifSlurp DGifSlurp | |
7121 | #define fn_DGifOpen DGifOpen | |
7122 | #define fn_DGifOpenFileName DGifOpenFileName | |
7123 | ||
0fda9b75 | 7124 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
7125 | |
7126 | /* Reading a GIF image from memory | |
7127 | Based on the PNG memory stuff to a certain extent. */ | |
7128 | ||
7129 | typedef struct | |
7130 | { | |
7131 | unsigned char *bytes; | |
3f791afe PE |
7132 | ptrdiff_t len; |
7133 | ptrdiff_t index; | |
4ef0d4d0 KS |
7134 | } |
7135 | gif_memory_source; | |
7136 | ||
7137 | /* Make the current memory source available to gif_read_from_memory. | |
7138 | It's done this way because not all versions of libungif support | |
7139 | a UserData field in the GifFileType structure. */ | |
7140 | static gif_memory_source *current_gif_memory_src; | |
7141 | ||
7142 | static int | |
d3da34e0 | 7143 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7144 | { |
7145 | gif_memory_source *src = current_gif_memory_src; | |
7146 | ||
7147 | if (len > src->len - src->index) | |
7148 | return -1; | |
7149 | ||
72af86bd | 7150 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7151 | src->index += len; |
7152 | return len; | |
7153 | } | |
7154 | ||
7155 | ||
578098f3 | 7156 | /* Load GIF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
7157 | successful. */ |
7158 | ||
91433552 DN |
7159 | static const int interlace_start[] = {0, 4, 2, 1}; |
7160 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7161 | |
17c0c952 JD |
7162 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7163 | ||
578098f3 | 7164 | static bool |
d3da34e0 | 7165 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 | 7166 | { |
60002bf5 CY |
7167 | Lisp_Object file; |
7168 | int rc, width, height, x, y, i, j; | |
4ef0d4d0 KS |
7169 | XImagePtr ximg; |
7170 | ColorMapObject *gif_color_map; | |
7171 | unsigned long pixel_colors[256]; | |
7172 | GifFileType *gif; | |
4ef0d4d0 | 7173 | gif_memory_source memsrc; |
60002bf5 CY |
7174 | Lisp_Object specified_bg = image_spec_value (img->spec, QCbackground, NULL); |
7175 | Lisp_Object specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7176 | Lisp_Object specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7177 | unsigned long bgcolor = 0; | |
13464394 | 7178 | EMACS_INT idx; |
4ef0d4d0 KS |
7179 | |
7180 | if (NILP (specified_data)) | |
7181 | { | |
7182 | file = x_find_image_file (specified_file); | |
7183 | if (!STRINGP (file)) | |
7184 | { | |
7185 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7186 | return 0; |
7187 | } | |
7188 | ||
df61c790 | 7189 | /* Open the GIF file. */ |
2037898d | 7190 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7191 | if (gif == NULL) |
7192 | { | |
7193 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7194 | return 0; |
7195 | } | |
7196 | } | |
7197 | else | |
7198 | { | |
7574650a AS |
7199 | if (!STRINGP (specified_data)) |
7200 | { | |
7201 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7202 | return 0; | |
7203 | } | |
7204 | ||
4ef0d4d0 KS |
7205 | /* Read from memory! */ |
7206 | current_gif_memory_src = &memsrc; | |
7207 | memsrc.bytes = SDATA (specified_data); | |
7208 | memsrc.len = SBYTES (specified_data); | |
7209 | memsrc.index = 0; | |
7210 | ||
df61c790 | 7211 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7212 | if (!gif) |
7213 | { | |
7214 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7215 | return 0; |
7216 | } | |
7217 | } | |
7218 | ||
f1f25b99 CY |
7219 | /* Before reading entire contents, check the declared image size. */ |
7220 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7221 | { | |
10ea2b82 | 7222 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7223 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7224 | return 0; |
7225 | } | |
7226 | ||
4ef0d4d0 KS |
7227 | /* Read entire contents. */ |
7228 | rc = fn_DGifSlurp (gif); | |
60002bf5 | 7229 | if (rc == GIF_ERROR || gif->ImageCount <= 0) |
4ef0d4d0 KS |
7230 | { |
7231 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7232 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7233 | return 0; |
7234 | } | |
7235 | ||
60002bf5 CY |
7236 | /* Which sub-image are we to display? */ |
7237 | { | |
33290528 PE |
7238 | Lisp_Object image_number = image_spec_value (img->spec, QCindex, NULL); |
7239 | idx = INTEGERP (image_number) ? XFASTINT (image_number) : 0; | |
60002bf5 | 7240 | if (idx < 0 || idx >= gif->ImageCount) |
17c0c952 | 7241 | { |
60002bf5 | 7242 | image_error ("Invalid image number `%s' in image `%s'", |
33290528 | 7243 | image_number, img->spec); |
60002bf5 CY |
7244 | fn_DGifCloseFile (gif); |
7245 | return 0; | |
17c0c952 | 7246 | } |
60002bf5 | 7247 | } |
17c0c952 | 7248 | |
e013fb34 CY |
7249 | width = img->width = gif->SWidth; |
7250 | height = img->height = gif->SHeight; | |
0f4aca46 | 7251 | |
e013fb34 CY |
7252 | img->corners[TOP_CORNER] = gif->SavedImages[0].ImageDesc.Top; |
7253 | img->corners[LEFT_CORNER] = gif->SavedImages[0].ImageDesc.Left; | |
8d903f4e AS |
7254 | img->corners[BOT_CORNER] |
7255 | = img->corners[TOP_CORNER] + gif->SavedImages[0].ImageDesc.Height; | |
7256 | img->corners[RIGHT_CORNER] | |
7257 | = img->corners[LEFT_CORNER] + gif->SavedImages[0].ImageDesc.Width; | |
4ef0d4d0 | 7258 | |
f1f25b99 CY |
7259 | if (!check_image_size (f, width, height)) |
7260 | { | |
10ea2b82 | 7261 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7262 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7263 | return 0; |
7264 | } | |
7265 | ||
4ef0d4d0 KS |
7266 | /* Create the X image and pixmap. */ |
7267 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7268 | { | |
7269 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7270 | return 0; |
7271 | } | |
7272 | ||
60002bf5 CY |
7273 | /* Clear the part of the screen image not covered by the image. |
7274 | Full animated GIF support requires more here (see the gif89 spec, | |
7275 | disposal methods). Let's simply assume that the part not covered | |
7276 | by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7277 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7278 | for (x = 0; x < width; ++x) |
7279 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7280 | ||
6ac3c7bb | 7281 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7282 | for (x = 0; x < width; ++x) |
7283 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7284 | ||
6ac3c7bb | 7285 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7286 | { |
6ac3c7bb | 7287 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7288 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7289 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7290 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7291 | } | |
7292 | ||
60002bf5 | 7293 | /* Read the GIF image into the X image. */ |
4ef0d4d0 | 7294 | |
60002bf5 CY |
7295 | /* FIXME: With the current implementation, loading an animated gif |
7296 | is quadratic in the number of animation frames, since each frame | |
7297 | is a separate struct image. We must provide a way for a single | |
7298 | gif_load call to construct and save all animation frames. */ | |
4ef0d4d0 | 7299 | |
60002bf5 CY |
7300 | init_color_table (); |
7301 | if (STRINGP (specified_bg)) | |
7302 | bgcolor = x_alloc_image_color (f, img, specified_bg, | |
7303 | FRAME_BACKGROUND_PIXEL (f)); | |
7304 | for (j = 0; j <= idx; ++j) | |
7305 | { | |
7306 | /* We use a local variable `raster' here because RasterBits is a | |
7307 | char *, which invites problems with bytes >= 0x80. */ | |
7308 | struct SavedImage *subimage = gif->SavedImages + j; | |
7309 | unsigned char *raster = (unsigned char *) subimage->RasterBits; | |
7310 | int transparency_color_index = -1; | |
7311 | int disposal = 0; | |
e013fb34 CY |
7312 | int subimg_width = subimage->ImageDesc.Width; |
7313 | int subimg_height = subimage->ImageDesc.Height; | |
7314 | int subimg_top = subimage->ImageDesc.Top; | |
7315 | int subimg_left = subimage->ImageDesc.Left; | |
60002bf5 CY |
7316 | |
7317 | /* Find the Graphic Control Extension block for this sub-image. | |
7318 | Extract the disposal method and transparency color. */ | |
7319 | for (i = 0; i < subimage->ExtensionBlockCount; i++) | |
4ef0d4d0 | 7320 | { |
60002bf5 | 7321 | ExtensionBlock *extblock = subimage->ExtensionBlocks + i; |
4ef0d4d0 | 7322 | |
60002bf5 CY |
7323 | if ((extblock->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION) |
7324 | && extblock->ByteCount == 4 | |
7325 | && extblock->Bytes[0] & 1) | |
4ef0d4d0 | 7326 | { |
60002bf5 CY |
7327 | /* From gif89a spec: 1 = "keep in place", 2 = "restore |
7328 | to background". Treat any other value like 2. */ | |
7329 | disposal = (extblock->Bytes[0] >> 2) & 7; | |
2547adb1 | 7330 | transparency_color_index = (unsigned char) extblock->Bytes[3]; |
60002bf5 | 7331 | break; |
4ef0d4d0 | 7332 | } |
4ef0d4d0 | 7333 | } |
60002bf5 CY |
7334 | |
7335 | /* We can't "keep in place" the first subimage. */ | |
7336 | if (j == 0) | |
7337 | disposal = 2; | |
7338 | ||
e013fb34 CY |
7339 | /* For disposal == 0, the spec says "No disposal specified. The |
7340 | decoder is not required to take any action." In practice, it | |
7341 | seems we need to treat this like "keep in place", see e.g. | |
7342 | http://upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif */ | |
7343 | if (disposal == 0) | |
7344 | disposal = 1; | |
7345 | ||
60002bf5 CY |
7346 | /* Allocate subimage colors. */ |
7347 | memset (pixel_colors, 0, sizeof pixel_colors); | |
7348 | gif_color_map = subimage->ImageDesc.ColorMap; | |
7349 | if (!gif_color_map) | |
7350 | gif_color_map = gif->SColorMap; | |
7351 | ||
7352 | if (gif_color_map) | |
7353 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
4ef0d4d0 | 7354 | { |
60002bf5 CY |
7355 | if (transparency_color_index == i) |
7356 | pixel_colors[i] = STRINGP (specified_bg) | |
7357 | ? bgcolor : FRAME_BACKGROUND_PIXEL (f); | |
7358 | else | |
7359 | { | |
7360 | int r = gif_color_map->Colors[i].Red << 8; | |
7361 | int g = gif_color_map->Colors[i].Green << 8; | |
7362 | int b = gif_color_map->Colors[i].Blue << 8; | |
7363 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7364 | } | |
4ef0d4d0 | 7365 | } |
60002bf5 CY |
7366 | |
7367 | /* Apply the pixel values. */ | |
7368 | if (gif->SavedImages[j].ImageDesc.Interlace) | |
7369 | { | |
7370 | int row, pass; | |
7371 | ||
7372 | for (y = 0, row = interlace_start[0], pass = 0; | |
e013fb34 | 7373 | y < subimg_height; |
60002bf5 CY |
7374 | y++, row += interlace_increment[pass]) |
7375 | { | |
e013fb34 | 7376 | if (row >= subimg_height) |
60002bf5 CY |
7377 | { |
7378 | row = interlace_start[++pass]; | |
e013fb34 | 7379 | while (row >= subimg_height) |
60002bf5 CY |
7380 | row = interlace_start[++pass]; |
7381 | } | |
7382 | ||
e013fb34 | 7383 | for (x = 0; x < subimg_width; x++) |
60002bf5 | 7384 | { |
e013fb34 | 7385 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7386 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7387 | XPutPixel (ximg, x + subimg_left, row + subimg_top, |
7388 | pixel_colors[c]); | |
60002bf5 CY |
7389 | } |
7390 | } | |
7391 | } | |
7392 | else | |
7393 | { | |
e013fb34 CY |
7394 | for (y = 0; y < subimg_height; ++y) |
7395 | for (x = 0; x < subimg_width; ++x) | |
60002bf5 | 7396 | { |
e013fb34 | 7397 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7398 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7399 | XPutPixel (ximg, x + subimg_left, y + subimg_top, |
7400 | pixel_colors[c]); | |
60002bf5 CY |
7401 | } |
7402 | } | |
4ef0d4d0 KS |
7403 | } |
7404 | ||
60002bf5 CY |
7405 | #ifdef COLOR_TABLE_SUPPORT |
7406 | img->colors = colors_in_color_table (&img->ncolors); | |
7407 | free_color_table (); | |
7408 | #endif /* COLOR_TABLE_SUPPORT */ | |
7409 | ||
1546c559 JL |
7410 | /* Save GIF image extension data for `image-metadata'. |
7411 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
b50691aa | 7412 | img->lisp_data = Qnil; |
60002bf5 | 7413 | if (gif->SavedImages[idx].ExtensionBlockCount > 0) |
6ac3c7bb | 7414 | { |
13464394 | 7415 | int delay = 0; |
60002bf5 CY |
7416 | ExtensionBlock *ext = gif->SavedImages[idx].ExtensionBlocks; |
7417 | for (i = 0; i < gif->SavedImages[idx].ExtensionBlockCount; i++, ext++) | |
6ac3c7bb | 7418 | /* Append (... FUNCTION "BYTES") */ |
1100a63c CY |
7419 | { |
7420 | img->lisp_data | |
7421 | = Fcons (make_number (ext->Function), | |
7422 | Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7423 | img->lisp_data)); | |
7424 | if (ext->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION | |
7425 | && ext->ByteCount == 4) | |
7426 | { | |
7427 | delay = ext->Bytes[2] << CHAR_BIT; | |
7428 | delay |= ext->Bytes[1]; | |
7429 | } | |
7430 | } | |
b50691aa | 7431 | img->lisp_data = Fcons (Qextension_data, |
1100a63c CY |
7432 | Fcons (img->lisp_data, Qnil)); |
7433 | if (delay) | |
7434 | img->lisp_data | |
7435 | = Fcons (Qdelay, | |
13464394 | 7436 | Fcons (make_float (delay / 100.0), |
1100a63c | 7437 | img->lisp_data)); |
6ac3c7bb | 7438 | } |
1100a63c | 7439 | |
6ac3c7bb | 7440 | if (gif->ImageCount > 1) |
b50691aa CY |
7441 | img->lisp_data = Fcons (Qcount, |
7442 | Fcons (make_number (gif->ImageCount), | |
7443 | img->lisp_data)); | |
6ac3c7bb | 7444 | |
4ef0d4d0 KS |
7445 | fn_DGifCloseFile (gif); |
7446 | ||
7447 | /* Maybe fill in the background field while we have ximg handy. */ | |
7448 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7449 | /* Casting avoids a GCC warning. */ |
7450 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7451 | |
7452 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7453 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7454 | x_destroy_x_image (ximg); | |
7455 | ||
4ef0d4d0 KS |
7456 | return 1; |
7457 | } | |
7458 | ||
2e09fef1 | 7459 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7460 | |
edfda783 | 7461 | #ifdef HAVE_NS |
578098f3 | 7462 | static bool |
edfda783 AR |
7463 | gif_load (struct frame *f, struct image *img) |
7464 | { | |
ed3751c8 JB |
7465 | return ns_load_image (f, img, |
7466 | image_spec_value (img->spec, QCfile, NULL), | |
7467 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7468 | } |
7469 | #endif /* HAVE_NS */ | |
7470 | ||
4ef0d4d0 KS |
7471 | #endif /* HAVE_GIF */ |
7472 | ||
7473 | ||
3de25479 | 7474 | /*********************************************************************** |
a32d4040 | 7475 | ImageMagick |
4917006b | 7476 | ***********************************************************************/ |
3de25479 | 7477 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 | 7478 | |
4b66faf3 | 7479 | static Lisp_Object Qimagemagick; |
a32d4040 | 7480 | |
578098f3 PE |
7481 | static bool imagemagick_image_p (Lisp_Object); |
7482 | static bool imagemagick_load (struct frame *, struct image *); | |
d66c4c7c CY |
7483 | static void imagemagick_clear_image (struct frame *, struct image *); |
7484 | ||
a32d4040 | 7485 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7486 | |
7487 | enum imagemagick_keyword_index | |
4917006b JV |
7488 | { |
7489 | IMAGEMAGICK_TYPE, | |
7490 | IMAGEMAGICK_DATA, | |
7491 | IMAGEMAGICK_FILE, | |
7492 | IMAGEMAGICK_ASCENT, | |
7493 | IMAGEMAGICK_MARGIN, | |
7494 | IMAGEMAGICK_RELIEF, | |
7495 | IMAGEMAGICK_ALGORITHM, | |
7496 | IMAGEMAGICK_HEURISTIC_MASK, | |
7497 | IMAGEMAGICK_MASK, | |
7498 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7499 | IMAGEMAGICK_HEIGHT, |
7500 | IMAGEMAGICK_WIDTH, | |
7501 | IMAGEMAGICK_ROTATION, | |
7502 | IMAGEMAGICK_CROP, | |
4917006b JV |
7503 | IMAGEMAGICK_LAST |
7504 | }; | |
3de25479 JV |
7505 | |
7506 | /* Vector of image_keyword structures describing the format | |
7507 | of valid user-defined image specifications. */ | |
7508 | ||
7509 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7510 | { |
7511 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7512 | {":data", IMAGE_STRING_VALUE, 0}, | |
7513 | {":file", IMAGE_STRING_VALUE, 0}, | |
7514 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7515 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4917006b JV |
7516 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7517 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7518 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7519 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7520 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7521 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7522 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7523 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7524 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7525 | }; |
a32d4040 | 7526 | |
33d4113c | 7527 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 7528 | static bool init_imagemagick_functions (void); |
bb4d86b4 CY |
7529 | #else |
7530 | #define init_imagemagick_functions NULL | |
7531 | #endif | |
7532 | ||
d66c4c7c CY |
7533 | /* Structure describing the image type for any image handled via |
7534 | ImageMagick. */ | |
7535 | ||
7536 | static struct image_type imagemagick_type = | |
7537 | { | |
7538 | &Qimagemagick, | |
7539 | imagemagick_image_p, | |
7540 | imagemagick_load, | |
7541 | imagemagick_clear_image, | |
bb4d86b4 | 7542 | init_imagemagick_functions, |
d66c4c7c CY |
7543 | NULL |
7544 | }; | |
7545 | ||
3de25479 JV |
7546 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7547 | ||
7548 | static void | |
4917006b JV |
7549 | imagemagick_clear_image (struct frame *f, |
7550 | struct image *img) | |
3de25479 | 7551 | { |
3de25479 JV |
7552 | x_clear_image (f, img); |
7553 | } | |
7554 | ||
578098f3 | 7555 | /* Return true if OBJECT is a valid IMAGEMAGICK image specification. Do |
3de25479 JV |
7556 | this by calling parse_image_spec and supplying the keywords that |
7557 | identify the IMAGEMAGICK format. */ | |
7558 | ||
578098f3 | 7559 | static bool |
4917006b | 7560 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7561 | { |
7562 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7563 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7564 | |
7565 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7566 | return 0; | |
7567 | ||
7568 | /* Must specify either the :data or :file keyword. */ | |
7569 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7570 | } | |
7571 | ||
7572 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
c7015153 | 7573 | Therefore rename the function so it doesn't collide with ImageMagick. */ |
3de25479 JV |
7574 | #define DrawRectangle DrawRectangleGif |
7575 | #include <wand/MagickWand.h> | |
7576 | ||
60737f02 PE |
7577 | /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason. |
7578 | Emacs seems to work fine with the hidden version, so unhide it. */ | |
7579 | #include <magick/version.h> | |
7580 | #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665 | |
7581 | extern WandExport void PixelGetMagickColor (const PixelWand *, | |
7582 | MagickPixelPacket *); | |
7583 | #endif | |
7584 | ||
d1d7b339 JL |
7585 | /* Log ImageMagick error message. |
7586 | Useful when a ImageMagick function returns the status `MagickFalse'. */ | |
7587 | ||
7588 | static void | |
7589 | imagemagick_error (MagickWand *wand) | |
7590 | { | |
7591 | char *description; | |
7592 | ExceptionType severity; | |
7593 | ||
7594 | description = MagickGetException (wand, &severity); | |
7595 | image_error ("ImageMagick error: %s", | |
1130ecfc | 7596 | build_string (description), |
d1d7b339 JL |
7597 | Qnil); |
7598 | description = (char *) MagickRelinquishMemory (description); | |
7599 | } | |
7600 | ||
d66c4c7c CY |
7601 | /* Helper function for imagemagick_load, which does the actual loading |
7602 | given contents and size, apart from frame and image structures, | |
7603 | passed from imagemagick_load. Uses librimagemagick to do most of | |
7604 | the image processing. | |
3de25479 | 7605 | |
d66c4c7c CY |
7606 | F is a pointer to the Emacs frame; IMG to the image structure to |
7607 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
7608 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
7609 | either the file name or the image data. | |
3de25479 | 7610 | |
578098f3 | 7611 | Return true if successful. */ |
3de25479 | 7612 | |
578098f3 | 7613 | static bool |
d66c4c7c CY |
7614 | imagemagick_load_image (struct frame *f, struct image *img, |
7615 | unsigned char *contents, unsigned int size, | |
33290528 | 7616 | char *filename) |
3de25479 | 7617 | { |
1b9b4cf4 | 7618 | size_t width, height; |
d66c4c7c | 7619 | MagickBooleanType status; |
3de25479 | 7620 | XImagePtr ximg; |
1b9b4cf4 CY |
7621 | int x, y; |
7622 | MagickWand *image_wand; | |
7623 | MagickWand *ping_wand; | |
3de25479 | 7624 | PixelIterator *iterator; |
1b9b4cf4 | 7625 | PixelWand **pixels, *bg_wand = NULL; |
3de25479 | 7626 | MagickPixelPacket pixel; |
4917006b | 7627 | Lisp_Object image; |
7574650a | 7628 | Lisp_Object value; |
33290528 | 7629 | Lisp_Object crop; |
13464394 | 7630 | EMACS_INT ino; |
4917006b JV |
7631 | int desired_width, desired_height; |
7632 | double rotation; | |
7574650a | 7633 | int pixelwidth; |
7574650a | 7634 | |
a32d4040 CY |
7635 | /* Handle image index for image types who can contain more than one image. |
7636 | Interface :index is same as for GIF. First we "ping" the image to see how | |
7637 | many sub-images it contains. Pinging is faster than loading the image to | |
7638 | find out things about it. */ | |
f853f599 | 7639 | |
a32d4040 | 7640 | /* Initialize the imagemagick environment. */ |
f853f599 | 7641 | MagickWandGenesis (); |
3de25479 JV |
7642 | image = image_spec_value (img->spec, QCindex, NULL); |
7643 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a | 7644 | ping_wand = NewMagickWand (); |
d1d7b339 | 7645 | /* MagickSetResolution (ping_wand, 2, 2); (Bug#10112) */ |
fa4fdb5c | 7646 | |
1b9b4cf4 CY |
7647 | status = filename |
7648 | ? MagickPingImage (ping_wand, filename) | |
7649 | : MagickPingImageBlob (ping_wand, contents, size); | |
7574650a | 7650 | |
d1d7b339 JL |
7651 | if (status == MagickFalse) |
7652 | { | |
7653 | imagemagick_error (ping_wand); | |
7654 | DestroyMagickWand (ping_wand); | |
7655 | return 0; | |
7656 | } | |
fa4fdb5c | 7657 | |
1b9b4cf4 | 7658 | if (ino < 0 || ino >= MagickGetNumberImages (ping_wand)) |
7574650a AS |
7659 | { |
7660 | image_error ("Invalid image number `%s' in image `%s'", | |
7661 | image, img->spec); | |
7662 | DestroyMagickWand (ping_wand); | |
7663 | return 0; | |
f3700365 | 7664 | } |
431dab04 | 7665 | |
5e617bc2 | 7666 | if (MagickGetNumberImages (ping_wand) > 1) |
b50691aa | 7667 | img->lisp_data = |
d2a2d277 | 7668 | Fcons (Qcount, |
7574650a | 7669 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
b50691aa | 7670 | img->lisp_data)); |
f3700365 JV |
7671 | |
7672 | DestroyMagickWand (ping_wand); | |
f853f599 | 7673 | |
d66c4c7c | 7674 | /* Now we know how many images are inside the file. If it's not a |
1b9b4cf4 | 7675 | bundle, the number is one. Load the image data. */ |
f3700365 | 7676 | |
1b9b4cf4 | 7677 | image_wand = NewMagickWand (); |
f3700365 | 7678 | |
1b9b4cf4 CY |
7679 | if ((filename |
7680 | ? MagickReadImage (image_wand, filename) | |
7681 | : MagickReadImageBlob (image_wand, contents, size)) | |
7682 | == MagickFalse) | |
f3700365 | 7683 | { |
1b9b4cf4 CY |
7684 | imagemagick_error (image_wand); |
7685 | goto imagemagick_error; | |
f3700365 | 7686 | } |
f853f599 | 7687 | |
1b9b4cf4 CY |
7688 | /* Retrieve the frame's background color, for use later. */ |
7689 | { | |
7690 | XColor bgcolor; | |
7691 | Lisp_Object specified_bg; | |
7692 | ||
7693 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
7694 | if (!STRINGP (specified_bg) | |
7695 | || !x_defined_color (f, SSDATA (specified_bg), &bgcolor, 0)) | |
7696 | { | |
7697 | #ifndef HAVE_NS | |
7698 | bgcolor.pixel = FRAME_BACKGROUND_PIXEL (f); | |
7699 | x_query_color (f, &bgcolor); | |
7700 | #else | |
7701 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &bgcolor, 1); | |
7702 | #endif | |
7703 | } | |
7704 | ||
7705 | bg_wand = NewPixelWand (); | |
7706 | PixelSetRed (bg_wand, (double) bgcolor.red / 65535); | |
7707 | PixelSetGreen (bg_wand, (double) bgcolor.green / 65535); | |
7708 | PixelSetBlue (bg_wand, (double) bgcolor.blue / 65535); | |
7709 | } | |
7710 | ||
d2a2d277 | 7711 | /* If width and/or height is set in the display spec assume we want |
a32d4040 | 7712 | to scale to those values. If either h or w is unspecified, the |
f3700365 | 7713 | unspecified should be calculated from the specified to preserve |
549a73b9 | 7714 | aspect ratio. */ |
3de25479 JV |
7715 | value = image_spec_value (img->spec, QCwidth, NULL); |
7716 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7717 | value = image_spec_value (img->spec, QCheight, NULL); | |
7718 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7719 | |
bdf6a35d JV |
7720 | height = MagickGetImageHeight (image_wand); |
7721 | width = MagickGetImageWidth (image_wand); | |
7722 | ||
a32d4040 CY |
7723 | if (desired_width != -1 && desired_height == -1) |
7724 | /* w known, calculate h. */ | |
7725 | desired_height = (double) desired_width / width * height; | |
7726 | if (desired_width == -1 && desired_height != -1) | |
7727 | /* h known, calculate w. */ | |
7728 | desired_width = (double) desired_height / height * width; | |
7729 | if (desired_width != -1 && desired_height != -1) | |
4917006b | 7730 | { |
7574650a AS |
7731 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7732 | if (status == MagickFalse) | |
7733 | { | |
7734 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
d1d7b339 | 7735 | imagemagick_error (image_wand); |
7574650a AS |
7736 | goto imagemagick_error; |
7737 | } | |
3de25479 | 7738 | } |
3de25479 | 7739 | |
f3700365 | 7740 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7741 | efficient. */ |
7742 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7743 | ||
13464394 | 7744 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7745 | { |
a32d4040 CY |
7746 | /* After some testing, it seems MagickCropImage is the fastest crop |
7747 | function in ImageMagick. This crop function seems to do less copying | |
7748 | than the alternatives, but it still reads the entire image into memory | |
13464394 | 7749 | before cropping, which is apparently difficult to avoid when using |
a32d4040 | 7750 | imagemagick. */ |
13464394 | 7751 | size_t crop_width = XINT (XCAR (crop)); |
7574650a | 7752 | crop = XCDR (crop); |
13464394 | 7753 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7754 | { |
13464394 | 7755 | size_t crop_height = XINT (XCAR (crop)); |
7574650a | 7756 | crop = XCDR (crop); |
13464394 | 7757 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7758 | { |
13464394 | 7759 | ssize_t crop_x = XINT (XCAR (crop)); |
7574650a | 7760 | crop = XCDR (crop); |
13464394 | 7761 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7762 | { |
13464394 PE |
7763 | ssize_t crop_y = XINT (XCAR (crop)); |
7764 | MagickCropImage (image_wand, crop_width, crop_height, | |
7765 | crop_x, crop_y); | |
7574650a AS |
7766 | } |
7767 | } | |
7768 | } | |
7769 | } | |
7770 | ||
d2a2d277 JV |
7771 | /* Furthermore :rotation. we need background color and angle for |
7772 | rotation. */ | |
3de25479 | 7773 | /* |
d2a2d277 JV |
7774 | TODO background handling for rotation specified_bg = |
7775 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7776 | (specified_bg). */ |
4917006b JV |
7777 | value = image_spec_value (img->spec, QCrotation, NULL); |
7778 | if (FLOATP (value)) | |
7779 | { | |
3de25479 | 7780 | rotation = extract_float (value); |
1b9b4cf4 | 7781 | status = MagickRotateImage (image_wand, bg_wand, rotation); |
4917006b JV |
7782 | if (status == MagickFalse) |
7783 | { | |
7784 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
d1d7b339 | 7785 | imagemagick_error (image_wand); |
4917006b JV |
7786 | goto imagemagick_error; |
7787 | } | |
3de25479 | 7788 | } |
7574650a | 7789 | |
1b9b4cf4 CY |
7790 | /* Set the canvas background color to the frame or specified |
7791 | background, and flatten the image. Note: as of ImageMagick | |
7792 | 6.6.0, SVG image transparency is not handled properly | |
7793 | (e.g. etc/images/splash.svg shows a white background always). */ | |
7794 | { | |
7795 | MagickWand *new_wand; | |
7796 | MagickSetImageBackgroundColor (image_wand, bg_wand); | |
0e25d334 | 7797 | #ifdef HAVE_MAGICKMERGEIMAGELAYERS |
1b9b4cf4 | 7798 | new_wand = MagickMergeImageLayers (image_wand, MergeLayer); |
0e25d334 CY |
7799 | #else |
7800 | new_wand = MagickFlattenImages (image_wand); | |
7801 | #endif | |
1b9b4cf4 CY |
7802 | DestroyMagickWand (image_wand); |
7803 | image_wand = new_wand; | |
7804 | } | |
7805 | ||
84ac6f9d PE |
7806 | /* Finally we are done manipulating the image. Figure out the |
7807 | resulting width/height and transfer ownership to Emacs. */ | |
7808 | height = MagickGetImageHeight (image_wand); | |
7809 | width = MagickGetImageWidth (image_wand); | |
7810 | ||
3f791afe PE |
7811 | if (! (width <= INT_MAX && height <= INT_MAX |
7812 | && check_image_size (f, width, height))) | |
3de25479 JV |
7813 | { |
7814 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7815 | goto imagemagick_error; | |
7816 | } | |
7574650a | 7817 | |
3de25479 JV |
7818 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7819 | went ok. */ | |
3de25479 JV |
7820 | |
7821 | init_color_table (); | |
af008560 | 7822 | |
0e25d334 CY |
7823 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7824 | if (imagemagick_render_type != 0) | |
7825 | { | |
7826 | /* Magicexportimage is normally faster than pixelpushing. This | |
7827 | method is also well tested. Some aspects of this method are | |
7828 | ad-hoc and needs to be more researched. */ | |
7829 | int imagedepth = 24; /*MagickGetImageDepth(image_wand);*/ | |
7830 | const char *exportdepth = imagedepth <= 8 ? "I" : "BGRP"; /*"RGBP";*/ | |
7831 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
7832 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, | |
7833 | &ximg, &img->pixmap)) | |
7834 | { | |
7835 | #ifdef COLOR_TABLE_SUPPORT | |
7836 | free_color_table (); | |
7837 | #endif | |
7838 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); | |
7839 | goto imagemagick_error; | |
7840 | } | |
7841 | ||
7842 | /* Oddly, the below code doesn't seem to work:*/ | |
7843 | /* switch(ximg->bitmap_unit){ */ | |
7844 | /* case 8: */ | |
7845 | /* pixelwidth=CharPixel; */ | |
7846 | /* break; */ | |
7847 | /* case 16: */ | |
7848 | /* pixelwidth=ShortPixel; */ | |
7849 | /* break; */ | |
7850 | /* case 32: */ | |
7851 | /* pixelwidth=LongPixel; */ | |
7852 | /* break; */ | |
7853 | /* } */ | |
7854 | /* | |
7855 | Here im just guessing the format of the bitmap. | |
7856 | happens to work fine for: | |
7857 | - bw djvu images | |
7858 | on rgb display. | |
7859 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
7860 | */ | |
7861 | pixelwidth = CharPixel; /*??? TODO figure out*/ | |
7862 | MagickExportImagePixels (image_wand, 0, 0, width, height, | |
7863 | exportdepth, pixelwidth, ximg->data); | |
7864 | } | |
7865 | else | |
7866 | #endif /* HAVE_MAGICKEXPORTIMAGEPIXELS */ | |
4917006b | 7867 | { |
13464394 PE |
7868 | size_t image_height; |
7869 | ||
4917006b | 7870 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
d2a2d277 JV |
7871 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7872 | &ximg, &img->pixmap)) | |
4917006b | 7873 | { |
466cbae9 AS |
7874 | #ifdef COLOR_TABLE_SUPPORT |
7875 | free_color_table (); | |
7876 | #endif | |
5e617bc2 | 7877 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
4917006b JV |
7878 | goto imagemagick_error; |
7879 | } | |
7574650a | 7880 | |
53964682 | 7881 | /* Copy imagemagick image to x with primitive yet robust pixel |
4917006b | 7882 | pusher loop. This has been tested a lot with many different |
549a73b9 | 7883 | images. */ |
7574650a | 7884 | |
4917006b JV |
7885 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7886 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7887 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7888 | { |
466cbae9 AS |
7889 | #ifdef COLOR_TABLE_SUPPORT |
7890 | free_color_table (); | |
7891 | #endif | |
7892 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7893 | image_error ("Imagemagick pixel iterator creation failed", |
7894 | Qnil, Qnil); | |
3de25479 | 7895 | goto imagemagick_error; |
4917006b JV |
7896 | } |
7897 | ||
13464394 PE |
7898 | image_height = MagickGetImageHeight (image_wand); |
7899 | for (y = 0; y < image_height; y++) | |
4917006b JV |
7900 | { |
7901 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7902 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7903 | break; |
7904 | for (x = 0; x < (long) width; x++) | |
7905 | { | |
7906 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7907 | XPutPixel (ximg, x, y, |
7908 | lookup_rgb_color (f, | |
7909 | pixel.red, | |
7910 | pixel.green, | |
7911 | pixel.blue)); | |
4917006b JV |
7912 | } |
7913 | } | |
7914 | DestroyPixelIterator (iterator); | |
3de25479 | 7915 | } |
3ed42149 | 7916 | |
3de25479 JV |
7917 | #ifdef COLOR_TABLE_SUPPORT |
7918 | /* Remember colors allocated for this image. */ | |
7919 | img->colors = colors_in_color_table (&img->ncolors); | |
7920 | free_color_table (); | |
7921 | #endif /* COLOR_TABLE_SUPPORT */ | |
7922 | ||
3de25479 JV |
7923 | img->width = width; |
7924 | img->height = height; | |
7925 | ||
3de25479 JV |
7926 | /* Put the image into the pixmap, then free the X image and its |
7927 | buffer. */ | |
7928 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7929 | x_destroy_x_image (ximg); |
7930 | ||
f3700365 | 7931 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7932 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7933 | if (bg_wand) DestroyPixelWand (bg_wand); |
7934 | ||
03d32f1b | 7935 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7936 | MagickWandTerminus (); |
3de25479 JV |
7937 | |
7938 | return 1; | |
7939 | ||
7940 | imagemagick_error: | |
466cbae9 | 7941 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7942 | if (bg_wand) DestroyPixelWand (bg_wand); |
7943 | ||
f853f599 | 7944 | MagickWandTerminus (); |
3de25479 JV |
7945 | /* TODO more cleanup. */ |
7946 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7947 | return 0; |
7948 | } | |
7949 | ||
4917006b | 7950 | |
578098f3 | 7951 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is true if |
4917006b JV |
7952 | successful. this function will go into the imagemagick_type structure, and |
7953 | the prototype thus needs to be compatible with that structure. */ | |
7954 | ||
578098f3 | 7955 | static bool |
d66c4c7c | 7956 | imagemagick_load (struct frame *f, struct image *img) |
4917006b | 7957 | { |
578098f3 | 7958 | bool success_p = 0; |
4917006b JV |
7959 | Lisp_Object file_name; |
7960 | ||
7961 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
7962 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
7963 | if (STRINGP (file_name)) | |
7964 | { | |
7965 | Lisp_Object file; | |
4917006b JV |
7966 | |
7967 | file = x_find_image_file (file_name); | |
4917006b JV |
7968 | if (!STRINGP (file)) |
7969 | { | |
7970 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
7971 | return 0; |
7972 | } | |
33290528 | 7973 | success_p = imagemagick_load_image (f, img, 0, 0, SSDATA (file)); |
4917006b JV |
7974 | } |
7975 | /* Else its not a file, its a lisp object. Load the image from a | |
7976 | lisp object rather than a file. */ | |
7977 | else | |
7978 | { | |
7979 | Lisp_Object data; | |
7980 | ||
7981 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
7982 | if (!STRINGP (data)) |
7983 | { | |
7984 | image_error ("Invalid image data `%s'", data, Qnil); | |
7985 | return 0; | |
7986 | } | |
d2a2d277 JV |
7987 | success_p = imagemagick_load_image (f, img, SDATA (data), |
7988 | SBYTES (data), NULL); | |
4917006b JV |
7989 | } |
7990 | ||
7991 | return success_p; | |
7992 | } | |
7993 | ||
a7ca3326 | 7994 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
7995 | doc: /* Return a list of image types supported by ImageMagick. |
7996 | Each entry in this list is a symbol named after an ImageMagick format | |
7997 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
7998 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
dd605cc4 | 7999 | You can also try the shell command: `identify -list format'. |
d66c4c7c CY |
8000 | |
8001 | Note that ImageMagick recognizes many file-types that Emacs does not | |
32d72c2f GM |
8002 | recognize as images, such as C. See `imagemagick-types-enable' |
8003 | and `imagemagick-types-inhibit'. */) | |
a8101f66 | 8004 | (void) |
3de25479 JV |
8005 | { |
8006 | Lisp_Object typelist = Qnil; | |
1ab0dee5 | 8007 | size_t numf = 0; |
3de25479 | 8008 | ExceptionInfo ex; |
2277de02 | 8009 | char **imtypes; |
3f791afe | 8010 | size_t i; |
3de25479 | 8011 | Lisp_Object Qimagemagicktype; |
2277de02 JD |
8012 | |
8013 | GetExceptionInfo(&ex); | |
8014 | imtypes = GetMagickList ("*", &numf, &ex); | |
8015 | DestroyExceptionInfo(&ex); | |
8016 | ||
4917006b JV |
8017 | for (i = 0; i < numf; i++) |
8018 | { | |
8019 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
8020 | typelist = Fcons (Qimagemagicktype, typelist); |
8021 | } | |
d1d7b339 | 8022 | return Fnreverse (typelist); |
3de25479 | 8023 | } |
7574650a | 8024 | |
3de25479 JV |
8025 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
8026 | ||
8027 | ||
4ef0d4d0 | 8028 | \f |
4ab27a43 GM |
8029 | /*********************************************************************** |
8030 | SVG | |
8031 | ***********************************************************************/ | |
8032 | ||
8033 | #if defined (HAVE_RSVG) | |
8034 | ||
8035 | /* Function prototypes. */ | |
8036 | ||
578098f3 PE |
8037 | static bool svg_image_p (Lisp_Object object); |
8038 | static bool svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 8039 | |
578098f3 PE |
8040 | static bool svg_load_image (struct frame *, struct image *, |
8041 | unsigned char *, ptrdiff_t); | |
4ab27a43 GM |
8042 | |
8043 | /* The symbol `svg' identifying images of this type. */ | |
8044 | ||
4b66faf3 | 8045 | static Lisp_Object Qsvg; |
4ab27a43 GM |
8046 | |
8047 | /* Indices of image specification fields in svg_format, below. */ | |
8048 | ||
8049 | enum svg_keyword_index | |
8050 | { | |
8051 | SVG_TYPE, | |
8052 | SVG_DATA, | |
8053 | SVG_FILE, | |
8054 | SVG_ASCENT, | |
8055 | SVG_MARGIN, | |
8056 | SVG_RELIEF, | |
8057 | SVG_ALGORITHM, | |
8058 | SVG_HEURISTIC_MASK, | |
8059 | SVG_MASK, | |
8060 | SVG_BACKGROUND, | |
8061 | SVG_LAST | |
8062 | }; | |
8063 | ||
8064 | /* Vector of image_keyword structures describing the format | |
8065 | of valid user-defined image specifications. */ | |
8066 | ||
91433552 | 8067 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
8068 | { |
8069 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8070 | {":data", IMAGE_STRING_VALUE, 0}, | |
8071 | {":file", IMAGE_STRING_VALUE, 0}, | |
8072 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8073 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ab27a43 GM |
8074 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8075 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8076 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8077 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8078 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8079 | }; | |
8080 | ||
33d4113c | 8081 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 8082 | static bool init_svg_functions (void); |
bb4d86b4 CY |
8083 | #else |
8084 | #define init_svg_functions NULL | |
8085 | #endif | |
8086 | ||
4ab27a43 GM |
8087 | /* Structure describing the image type `svg'. Its the same type of |
8088 | structure defined for all image formats, handled by emacs image | |
8089 | functions. See struct image_type in dispextern.h. */ | |
8090 | ||
8091 | static struct image_type svg_type = | |
8092 | { | |
4ab27a43 | 8093 | &Qsvg, |
4ab27a43 | 8094 | svg_image_p, |
4ab27a43 | 8095 | svg_load, |
4ab27a43 | 8096 | x_clear_image, |
bb4d86b4 | 8097 | init_svg_functions, |
c21e6151 | 8098 | NULL |
4ab27a43 GM |
8099 | }; |
8100 | ||
8101 | ||
578098f3 | 8102 | /* Return true if OBJECT is a valid SVG image specification. Do |
4ab27a43 GM |
8103 | this by calling parse_image_spec and supplying the keywords that |
8104 | identify the SVG format. */ | |
8105 | ||
578098f3 | 8106 | static bool |
d3da34e0 | 8107 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
8108 | { |
8109 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 8110 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
8111 | |
8112 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8113 | return 0; | |
8114 | ||
8115 | /* Must specify either the :data or :file keyword. */ | |
8116 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8117 | } | |
8118 | ||
8119 | #include <librsvg/rsvg.h> | |
8120 | ||
0fda9b75 | 8121 | #ifdef WINDOWSNT |
5fc9fdeb JR |
8122 | |
8123 | /* SVG library functions. */ | |
df61c790 AS |
8124 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
8125 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
8126 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
8127 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
8128 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
df61c790 AS |
8129 | |
8130 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
8131 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
8132 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
8133 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
8134 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
8135 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
8136 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
8137 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
8138 | ||
8139 | DEF_IMGLIB_FN (void, g_type_init); | |
8140 | DEF_IMGLIB_FN (void, g_object_unref); | |
8141 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 8142 | |
df23bf08 | 8143 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb | 8144 | |
578098f3 | 8145 | static bool |
d07ff9db | 8146 | init_svg_functions (void) |
5fc9fdeb | 8147 | { |
df23bf08 | 8148 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb | 8149 | |
d07ff9db CY |
8150 | if (!(glib = w32_delayed_load (Qglib)) |
8151 | || !(gobject = w32_delayed_load (Qgobject)) | |
8152 | || !(gdklib = w32_delayed_load (Qgdk_pixbuf)) | |
8153 | || !(library = w32_delayed_load (Qsvg))) | |
5fc9fdeb JR |
8154 | return 0; |
8155 | ||
8156 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8157 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8158 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8159 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8160 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
5fc9fdeb JR |
8161 | |
8162 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8163 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8164 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8165 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8166 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8167 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8168 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8169 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8170 | ||
df23bf08 JR |
8171 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8172 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8173 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8174 | |
5fc9fdeb JR |
8175 | return 1; |
8176 | } | |
4ab27a43 | 8177 | |
5fc9fdeb JR |
8178 | #else |
8179 | /* The following aliases for library functions allow dynamic loading | |
8180 | to be used on some platforms. */ | |
4ab27a43 | 8181 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8182 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8183 | #define fn_rsvg_handle_write rsvg_handle_write |
8184 | #define fn_rsvg_handle_close rsvg_handle_close | |
8185 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
4ab27a43 | 8186 | |
5fc9fdeb JR |
8187 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8188 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8189 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8190 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8191 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8192 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8193 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8194 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8195 | ||
5fc9fdeb JR |
8196 | #define fn_g_type_init g_type_init |
8197 | #define fn_g_object_unref g_object_unref | |
8198 | #define fn_g_error_free g_error_free | |
0fda9b75 | 8199 | #endif /* !WINDOWSNT */ |
4ab27a43 | 8200 | |
578098f3 PE |
8201 | /* Load SVG image IMG for use on frame F. Value is true if |
8202 | successful. */ | |
4ab27a43 | 8203 | |
578098f3 | 8204 | static bool |
d3da34e0 | 8205 | svg_load (struct frame *f, struct image *img) |
4ab27a43 | 8206 | { |
578098f3 | 8207 | bool success_p = 0; |
4ab27a43 GM |
8208 | Lisp_Object file_name; |
8209 | ||
8210 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8211 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8212 | if (STRINGP (file_name)) | |
8213 | { | |
8214 | Lisp_Object file; | |
8215 | unsigned char *contents; | |
dd52fcea | 8216 | ptrdiff_t size; |
4ab27a43 GM |
8217 | |
8218 | file = x_find_image_file (file_name); | |
4ab27a43 | 8219 | if (!STRINGP (file)) |
c21e6151 YM |
8220 | { |
8221 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8222 | return 0; |
8223 | } | |
8224 | ||
4ab27a43 | 8225 | /* Read the entire file into memory. */ |
33290528 | 8226 | contents = slurp_file (SSDATA (file), &size); |
4ab27a43 | 8227 | if (contents == NULL) |
c21e6151 YM |
8228 | { |
8229 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8230 | return 0; |
8231 | } | |
4ab27a43 | 8232 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8233 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8234 | xfree (contents); |
4ab27a43 GM |
8235 | } |
8236 | /* Else its not a file, its a lisp object. Load the image from a | |
8237 | lisp object rather than a file. */ | |
8238 | else | |
8239 | { | |
8240 | Lisp_Object data; | |
8241 | ||
8242 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8243 | if (!STRINGP (data)) |
8244 | { | |
8245 | image_error ("Invalid image data `%s'", data, Qnil); | |
8246 | return 0; | |
8247 | } | |
4ab27a43 GM |
8248 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8249 | } | |
8250 | ||
8251 | return success_p; | |
8252 | } | |
8253 | ||
bbe6f2aa JB |
8254 | /* svg_load_image is a helper function for svg_load, which does the |
8255 | actual loading given contents and size, apart from frame and image | |
8256 | structures, passed from svg_load. | |
4ab27a43 | 8257 | |
bbe6f2aa | 8258 | Uses librsvg to do most of the image processing. |
c21e6151 | 8259 | |
578098f3 PE |
8260 | Returns true when successful. */ |
8261 | static bool | |
d3da34e0 JB |
8262 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8263 | struct image *img, /* Pointer to emacs image structure. */ | |
8264 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
dd52fcea | 8265 | ptrdiff_t size) /* Size of data in bytes. */ |
4ab27a43 GM |
8266 | { |
8267 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8268 | RsvgDimensionData dimension_data; |
33290528 | 8269 | GError *err = NULL; |
4ab27a43 GM |
8270 | GdkPixbuf *pixbuf; |
8271 | int width; | |
8272 | int height; | |
8273 | const guint8 *pixels; | |
8274 | int rowstride; | |
8275 | XImagePtr ximg; | |
c21e6151 | 8276 | Lisp_Object specified_bg; |
4ab27a43 GM |
8277 | XColor background; |
8278 | int x; | |
8279 | int y; | |
8280 | ||
8281 | /* g_type_init is a glib function that must be called prior to using | |
8282 | gnome type library functions. */ | |
5fc9fdeb | 8283 | fn_g_type_init (); |
4ab27a43 | 8284 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8285 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8286 | |
8287 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
33290528 PE |
8288 | fn_rsvg_handle_write (rsvg_handle, contents, size, &err); |
8289 | if (err) goto rsvg_error; | |
4ab27a43 GM |
8290 | |
8291 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8292 | for further writes. */ | |
33290528 PE |
8293 | fn_rsvg_handle_close (rsvg_handle, &err); |
8294 | if (err) goto rsvg_error; | |
e025c9c2 CY |
8295 | |
8296 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8297 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8298 | { |
8299 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8300 | goto rsvg_error; | |
8301 | } | |
b2996e57 | 8302 | |
4ab27a43 GM |
8303 | /* We can now get a valid pixel buffer from the svg file, if all |
8304 | went ok. */ | |
df61c790 | 8305 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8306 | if (!pixbuf) goto rsvg_error; |
8307 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8308 | |
8309 | /* Extract some meta data from the svg handle. */ | |
8310 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8311 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8312 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8313 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8314 | ||
8315 | /* Validate the svg meta data. */ | |
8316 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8317 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8318 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8319 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8320 | ||
8321 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8322 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8323 | { | |
5fc9fdeb | 8324 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8325 | return 0; |
8326 | } | |
4ab27a43 GM |
8327 | |
8328 | init_color_table (); | |
8329 | ||
c21e6151 YM |
8330 | /* Handle alpha channel by combining the image with a background |
8331 | color. */ | |
8332 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 | 8333 | if (!STRINGP (specified_bg) |
33290528 | 8334 | || !x_defined_color (f, SSDATA (specified_bg), &background, 0)) |
c21e6151 | 8335 | { |
d7e008d0 | 8336 | #ifndef HAVE_NS |
c21e6151 YM |
8337 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8338 | x_query_color (f, &background); | |
d7e008d0 | 8339 | #else |
ed3751c8 | 8340 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8341 | #endif |
c21e6151 | 8342 | } |
4ab27a43 | 8343 | |
8d3c4e79 CY |
8344 | /* SVG pixmaps specify transparency in the last byte, so right |
8345 | shift 8 bits to get rid of it, since emacs doesn't support | |
8346 | transparency. */ | |
8347 | background.red >>= 8; | |
8348 | background.green >>= 8; | |
8349 | background.blue >>= 8; | |
8350 | ||
4ab27a43 GM |
8351 | /* This loop handles opacity values, since Emacs assumes |
8352 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8353 | calculating the resulting color, given the transparency of the |
8354 | pixel, and the image background color. */ | |
4ab27a43 GM |
8355 | for (y = 0; y < height; ++y) |
8356 | { | |
8357 | for (x = 0; x < width; ++x) | |
8358 | { | |
13464394 PE |
8359 | int red; |
8360 | int green; | |
8361 | int blue; | |
8362 | int opacity; | |
4ab27a43 GM |
8363 | |
8364 | red = *pixels++; | |
8365 | green = *pixels++; | |
8366 | blue = *pixels++; | |
8367 | opacity = *pixels++; | |
8368 | ||
8369 | red = ((red * opacity) | |
8370 | + (background.red * ((1 << 8) - opacity))); | |
8371 | green = ((green * opacity) | |
8372 | + (background.green * ((1 << 8) - opacity))); | |
8373 | blue = ((blue * opacity) | |
8374 | + (background.blue * ((1 << 8) - opacity))); | |
8375 | ||
8376 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8377 | } | |
8378 | ||
8379 | pixels += rowstride - 4 * width; | |
8380 | } | |
8381 | ||
8382 | #ifdef COLOR_TABLE_SUPPORT | |
8383 | /* Remember colors allocated for this image. */ | |
8384 | img->colors = colors_in_color_table (&img->ncolors); | |
8385 | free_color_table (); | |
8386 | #endif /* COLOR_TABLE_SUPPORT */ | |
8387 | ||
5fc9fdeb | 8388 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8389 | |
c21e6151 YM |
8390 | img->width = width; |
8391 | img->height = height; | |
8392 | ||
8393 | /* Maybe fill in the background field while we have ximg handy. | |
8394 | Casting avoids a GCC warning. */ | |
8395 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8396 | ||
4ab27a43 GM |
8397 | /* Put the image into the pixmap, then free the X image and its |
8398 | buffer. */ | |
8399 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8400 | x_destroy_x_image (ximg); | |
8401 | ||
4ab27a43 GM |
8402 | return 1; |
8403 | ||
8404 | rsvg_error: | |
e025c9c2 | 8405 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8406 | /* FIXME: Use error->message so the user knows what is the actual |
8407 | problem with the image. */ | |
8408 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
33290528 | 8409 | fn_g_error_free (err); |
4ab27a43 GM |
8410 | return 0; |
8411 | } | |
8412 | ||
8413 | #endif /* defined (HAVE_RSVG) */ | |
8414 | ||
8415 | ||
8416 | ||
4ef0d4d0 KS |
8417 | \f |
8418 | /*********************************************************************** | |
8419 | Ghostscript | |
8420 | ***********************************************************************/ | |
8421 | ||
8422 | #ifdef HAVE_X_WINDOWS | |
8423 | #define HAVE_GHOSTSCRIPT 1 | |
8424 | #endif /* HAVE_X_WINDOWS */ | |
8425 | ||
4ef0d4d0 KS |
8426 | #ifdef HAVE_GHOSTSCRIPT |
8427 | ||
578098f3 PE |
8428 | static bool gs_image_p (Lisp_Object object); |
8429 | static bool gs_load (struct frame *f, struct image *img); | |
f57e2426 | 8430 | static void gs_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
8431 | |
8432 | /* Keyword symbols. */ | |
8433 | ||
955cbe7b | 8434 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8435 | |
8436 | /* Indices of image specification fields in gs_format, below. */ | |
8437 | ||
8438 | enum gs_keyword_index | |
8439 | { | |
8440 | GS_TYPE, | |
8441 | GS_PT_WIDTH, | |
8442 | GS_PT_HEIGHT, | |
8443 | GS_FILE, | |
8444 | GS_LOADER, | |
8445 | GS_BOUNDING_BOX, | |
8446 | GS_ASCENT, | |
8447 | GS_MARGIN, | |
8448 | GS_RELIEF, | |
8449 | GS_ALGORITHM, | |
8450 | GS_HEURISTIC_MASK, | |
8451 | GS_MASK, | |
8452 | GS_BACKGROUND, | |
8453 | GS_LAST | |
8454 | }; | |
8455 | ||
8456 | /* Vector of image_keyword structures describing the format | |
8457 | of valid user-defined image specifications. */ | |
8458 | ||
91433552 | 8459 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8460 | { |
8461 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8462 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8463 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8464 | {":file", IMAGE_STRING_VALUE, 1}, | |
8465 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8466 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8467 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8468 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
8469 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8470 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8471 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8472 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8473 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8474 | }; | |
8475 | ||
8476 | /* Structure describing the image type `ghostscript'. */ | |
8477 | ||
8478 | static struct image_type gs_type = | |
8479 | { | |
8480 | &Qpostscript, | |
8481 | gs_image_p, | |
8482 | gs_load, | |
8483 | gs_clear_image, | |
d07ff9db | 8484 | NULL, |
4ef0d4d0 KS |
8485 | NULL |
8486 | }; | |
8487 | ||
8488 | ||
8489 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8490 | ||
8491 | static void | |
d3da34e0 | 8492 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 8493 | { |
4ef0d4d0 KS |
8494 | x_clear_image (f, img); |
8495 | } | |
8496 | ||
8497 | ||
578098f3 | 8498 | /* Return true if OBJECT is a valid Ghostscript image |
4ef0d4d0 KS |
8499 | specification. */ |
8500 | ||
578098f3 | 8501 | static bool |
d3da34e0 | 8502 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8503 | { |
8504 | struct image_keyword fmt[GS_LAST]; | |
8505 | Lisp_Object tem; | |
8506 | int i; | |
8507 | ||
72af86bd | 8508 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8509 | |
8510 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8511 | return 0; | |
8512 | ||
8513 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8514 | tem = fmt[GS_BOUNDING_BOX].value; | |
8515 | if (CONSP (tem)) | |
8516 | { | |
8517 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8518 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8519 | return 0; | |
8520 | if (!NILP (tem)) | |
8521 | return 0; | |
8522 | } | |
8523 | else if (VECTORP (tem)) | |
8524 | { | |
77b37c05 | 8525 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
8526 | return 0; |
8527 | for (i = 0; i < 4; ++i) | |
28be1ada | 8528 | if (!INTEGERP (AREF (tem, i))) |
4ef0d4d0 KS |
8529 | return 0; |
8530 | } | |
8531 | else | |
8532 | return 0; | |
8533 | ||
8534 | return 1; | |
8535 | } | |
8536 | ||
8537 | ||
578098f3 | 8538 | /* Load Ghostscript image IMG for use on frame F. Value is true |
4ef0d4d0 KS |
8539 | if successful. */ |
8540 | ||
578098f3 | 8541 | static bool |
d3da34e0 | 8542 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 | 8543 | { |
13464394 PE |
8544 | uprintmax_t printnum1, printnum2; |
8545 | char buffer[sizeof " " + INT_STRLEN_BOUND (printmax_t)]; | |
4ef0d4d0 | 8546 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; |
4ef0d4d0 KS |
8547 | Lisp_Object frame; |
8548 | double in_width, in_height; | |
8549 | Lisp_Object pixel_colors = Qnil; | |
8550 | ||
8551 | /* Compute pixel size of pixmap needed from the given size in the | |
8552 | image specification. Sizes in the specification are in pt. 1 pt | |
8553 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8554 | info. */ | |
8555 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8556 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
42143acd | 8557 | in_width *= FRAME_RES_X (f); |
4ef0d4d0 | 8558 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); |
7574650a | 8559 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
42143acd | 8560 | in_height *= FRAME_RES_Y (f); |
4ef0d4d0 | 8561 | |
13464394 PE |
8562 | if (! (in_width <= INT_MAX && in_height <= INT_MAX |
8563 | && check_image_size (f, in_width, in_height))) | |
f1f25b99 | 8564 | { |
10ea2b82 | 8565 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8566 | return 0; |
8567 | } | |
13464394 PE |
8568 | img->width = in_width; |
8569 | img->height = in_height; | |
f1f25b99 | 8570 | |
4ef0d4d0 | 8571 | /* Create the pixmap. */ |
a54e2c05 | 8572 | eassert (img->pixmap == NO_PIXMAP); |
4ef0d4d0 | 8573 | |
ca4aa935 PE |
8574 | if (x_check_image_size (0, img->width, img->height)) |
8575 | { | |
8576 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
4d7e6e51 | 8577 | block_input (); |
ca4aa935 PE |
8578 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
8579 | img->width, img->height, | |
8580 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
4d7e6e51 | 8581 | unblock_input (); |
ca4aa935 | 8582 | } |
4ef0d4d0 KS |
8583 | |
8584 | if (!img->pixmap) | |
8585 | { | |
8586 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8587 | return 0; | |
8588 | } | |
8589 | ||
8590 | /* Call the loader to fill the pixmap. It returns a process object | |
8591 | if successful. We do not record_unwind_protect here because | |
8592 | other places in redisplay like calling window scroll functions | |
8593 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
13464394 PE |
8594 | printnum1 = FRAME_X_WINDOW (f); |
8595 | printnum2 = img->pixmap; | |
620f13b0 | 8596 | window_and_pixmap_id |
a8290ec3 | 8597 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); |
4ef0d4d0 | 8598 | |
13464394 PE |
8599 | printnum1 = FRAME_FOREGROUND_PIXEL (f); |
8600 | printnum2 = FRAME_BACKGROUND_PIXEL (f); | |
a8290ec3 DA |
8601 | pixel_colors |
8602 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
8603 | |
8604 | XSETFRAME (frame, f); | |
8605 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8606 | if (NILP (loader)) | |
8607 | loader = intern ("gs-load-image"); | |
8608 | ||
b50691aa CY |
8609 | img->lisp_data = call6 (loader, frame, img->spec, |
8610 | make_number (img->width), | |
8611 | make_number (img->height), | |
8612 | window_and_pixmap_id, | |
8613 | pixel_colors); | |
8614 | return PROCESSP (img->lisp_data); | |
4ef0d4d0 KS |
8615 | } |
8616 | ||
8617 | ||
8618 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8619 | frame F. Called from XTread_socket when receiving an event | |
8620 | telling Emacs that Ghostscript has finished drawing. */ | |
8621 | ||
8622 | void | |
d3da34e0 | 8623 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8624 | { |
354884c4 | 8625 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 PE |
8626 | int class; |
8627 | ptrdiff_t i; | |
4ef0d4d0 KS |
8628 | struct image *img; |
8629 | ||
8630 | /* Find the image containing PIXMAP. */ | |
8631 | for (i = 0; i < c->used; ++i) | |
8632 | if (c->images[i]->pixmap == pixmap) | |
8633 | break; | |
8634 | ||
8635 | /* Should someone in between have cleared the image cache, for | |
8636 | instance, give up. */ | |
8637 | if (i == c->used) | |
8638 | return; | |
8639 | ||
8640 | /* Kill the GS process. We should have found PIXMAP in the image | |
8641 | cache and its image should contain a process object. */ | |
8642 | img = c->images[i]; | |
a54e2c05 | 8643 | eassert (PROCESSP (img->lisp_data)); |
b50691aa CY |
8644 | Fkill_process (img->lisp_data, Qnil); |
8645 | img->lisp_data = Qnil; | |
4ef0d4d0 KS |
8646 | |
8647 | #if defined (HAVE_X_WINDOWS) | |
8648 | ||
8649 | /* On displays with a mutable colormap, figure out the colors | |
8650 | allocated for the image by looking at the pixels of an XImage for | |
8651 | img->pixmap. */ | |
8652 | class = FRAME_X_VISUAL (f)->class; | |
8653 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8654 | { | |
8655 | XImagePtr ximg; | |
8656 | ||
4d7e6e51 | 8657 | block_input (); |
4ef0d4d0 KS |
8658 | |
8659 | /* Try to get an XImage for img->pixmep. */ | |
8660 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8661 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8662 | if (ximg) | |
8663 | { | |
8664 | int x, y; | |
8665 | ||
8666 | /* Initialize the color table. */ | |
8667 | init_color_table (); | |
8668 | ||
8669 | /* For each pixel of the image, look its color up in the | |
8670 | color table. After having done so, the color table will | |
8671 | contain an entry for each color used by the image. */ | |
8672 | for (y = 0; y < img->height; ++y) | |
8673 | for (x = 0; x < img->width; ++x) | |
8674 | { | |
8675 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8676 | lookup_pixel_color (f, pixel); | |
8677 | } | |
8678 | ||
8679 | /* Record colors in the image. Free color table and XImage. */ | |
8680 | #ifdef COLOR_TABLE_SUPPORT | |
8681 | img->colors = colors_in_color_table (&img->ncolors); | |
8682 | free_color_table (); | |
8683 | #endif | |
8684 | XDestroyImage (ximg); | |
8685 | ||
8686 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8687 | here, we get a BadAccess later in x_clear_image when | |
8688 | freeing the colors. */ | |
8689 | /* We have allocated colors once, but Ghostscript has also | |
8690 | allocated colors on behalf of us. So, to get the | |
8691 | reference counts right, free them once. */ | |
8692 | if (img->ncolors) | |
8693 | x_free_colors (f, img->colors, img->ncolors); | |
8694 | #endif | |
8695 | } | |
8696 | else | |
8697 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8698 | img->spec, Qnil); | |
8699 | ||
4d7e6e51 | 8700 | unblock_input (); |
4ef0d4d0 KS |
8701 | } |
8702 | #endif /* HAVE_X_WINDOWS */ | |
8703 | ||
8704 | /* Now that we have the pixmap, compute mask and transform the | |
8705 | image if requested. */ | |
4d7e6e51 | 8706 | block_input (); |
4ef0d4d0 | 8707 | postprocess_image (f, img); |
4d7e6e51 | 8708 | unblock_input (); |
4ef0d4d0 KS |
8709 | } |
8710 | ||
8711 | #endif /* HAVE_GHOSTSCRIPT */ | |
8712 | ||
8713 | \f | |
8714 | /*********************************************************************** | |
8715 | Tests | |
8716 | ***********************************************************************/ | |
8717 | ||
e509cfa6 | 8718 | #ifdef GLYPH_DEBUG |
4ef0d4d0 | 8719 | |
a7ca3326 | 8720 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 8721 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 8722 | (Lisp_Object spec) |
4ef0d4d0 KS |
8723 | { |
8724 | return valid_image_p (spec) ? Qt : Qnil; | |
8725 | } | |
8726 | ||
8727 | ||
a7ca3326 | 8728 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 8729 | (Lisp_Object spec) |
4ef0d4d0 | 8730 | { |
13464394 | 8731 | ptrdiff_t id = -1; |
4ef0d4d0 KS |
8732 | |
8733 | if (valid_image_p (spec)) | |
8734 | id = lookup_image (SELECTED_FRAME (), spec); | |
8735 | ||
8736 | debug_print (spec); | |
8737 | return make_number (id); | |
8738 | } | |
8739 | ||
e509cfa6 | 8740 | #endif /* GLYPH_DEBUG */ |
4ef0d4d0 KS |
8741 | |
8742 | ||
8743 | /*********************************************************************** | |
8744 | Initialization | |
8745 | ***********************************************************************/ | |
8746 | ||
d07ff9db | 8747 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0, |
0855eb52 JB |
8748 | doc: /* Initialize image library implementing image type TYPE. |
8749 | Return non-nil if TYPE is a supported image type. | |
8750 | ||
d07ff9db CY |
8751 | If image libraries are loaded dynamically (currently only the case on |
8752 | MS-Windows), load the library for TYPE if it is not yet loaded, using | |
8753 | the library file(s) specified by `dynamic-library-alist'. */) | |
8754 | (Lisp_Object type) | |
0855eb52 | 8755 | { |
d07ff9db | 8756 | return lookup_image_type (type) ? Qt : Qnil; |
bb4d86b4 | 8757 | } |
0855eb52 | 8758 | |
bb4d86b4 | 8759 | /* Look up image type TYPE, and return a pointer to its image_type |
d07ff9db | 8760 | structure. Return 0 if TYPE is not a known image type. */ |
bb4d86b4 CY |
8761 | |
8762 | static struct image_type * | |
d07ff9db | 8763 | lookup_image_type (Lisp_Object type) |
bb4d86b4 | 8764 | { |
2f142cc5 | 8765 | /* Types pbm and xbm are built-in and always available. */ |
bb4d86b4 | 8766 | if (EQ (type, Qpbm)) |
d07ff9db | 8767 | return define_image_type (&pbm_type); |
bb4d86b4 CY |
8768 | |
8769 | if (EQ (type, Qxbm)) | |
d07ff9db | 8770 | return define_image_type (&xbm_type); |
2f142cc5 | 8771 | |
9e2a2647 | 8772 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8773 | if (EQ (type, Qxpm)) |
d07ff9db | 8774 | return define_image_type (&xpm_type); |
0855eb52 JB |
8775 | #endif |
8776 | ||
9e2a2647 | 8777 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8778 | if (EQ (type, Qjpeg)) |
d07ff9db | 8779 | return define_image_type (&jpeg_type); |
0855eb52 JB |
8780 | #endif |
8781 | ||
9e2a2647 | 8782 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8783 | if (EQ (type, Qtiff)) |
d07ff9db | 8784 | return define_image_type (&tiff_type); |
0855eb52 JB |
8785 | #endif |
8786 | ||
9e2a2647 | 8787 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8788 | if (EQ (type, Qgif)) |
d07ff9db | 8789 | return define_image_type (&gif_type); |
0855eb52 JB |
8790 | #endif |
8791 | ||
9e2a2647 | 8792 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8793 | if (EQ (type, Qpng)) |
d07ff9db | 8794 | return define_image_type (&png_type); |
0855eb52 JB |
8795 | #endif |
8796 | ||
4ab27a43 GM |
8797 | #if defined (HAVE_RSVG) |
8798 | if (EQ (type, Qsvg)) | |
d07ff9db | 8799 | return define_image_type (&svg_type); |
4ab27a43 | 8800 | #endif |
c21e6151 | 8801 | |
3de25479 | 8802 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 8803 | if (EQ (type, Qimagemagick)) |
d07ff9db | 8804 | return define_image_type (&imagemagick_type); |
3de25479 JV |
8805 | #endif |
8806 | ||
0855eb52 JB |
8807 | #ifdef HAVE_GHOSTSCRIPT |
8808 | if (EQ (type, Qpostscript)) | |
d07ff9db | 8809 | return define_image_type (&gs_type); |
0855eb52 JB |
8810 | #endif |
8811 | ||
bb4d86b4 | 8812 | return NULL; |
0855eb52 JB |
8813 | } |
8814 | ||
aa15c6bb JB |
8815 | /* Reset image_types before dumping. |
8816 | Called from Fdump_emacs. */ | |
8817 | ||
8818 | void | |
8819 | reset_image_types (void) | |
8820 | { | |
8821 | while (image_types) | |
8822 | { | |
8823 | struct image_type *next = image_types->next; | |
8824 | xfree (image_types); | |
8825 | image_types = next; | |
8826 | } | |
0855eb52 JB |
8827 | } |
8828 | ||
4ef0d4d0 | 8829 | void |
d3da34e0 | 8830 | syms_of_image (void) |
4ef0d4d0 | 8831 | { |
aa15c6bb | 8832 | /* Initialize this only once; it will be reset before dumping. */ |
6e6fc3fd RS |
8833 | image_types = NULL; |
8834 | ||
91af3942 | 8835 | /* Must be defined now because we're going to update it below, while |
0855eb52 | 8836 | defining the supported image types. */ |
29208e82 | 8837 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 8838 | doc: /* List of potentially supported image types. |
bbe6f2aa | 8839 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
8840 | To check whether it is really supported, use `image-type-available-p'. */); |
8841 | Vimage_types = Qnil; | |
8842 | ||
29208e82 | 8843 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
8844 | doc: /* Maximum size of images. |
8845 | Emacs will not load an image into memory if its pixel width or | |
8846 | pixel height exceeds this limit. | |
8847 | ||
8848 | If the value is an integer, it directly specifies the maximum | |
8849 | image height and width, measured in pixels. If it is a floating | |
8850 | point number, it specifies the maximum image height and width | |
8851 | as a ratio to the frame height and width. If the value is | |
8852 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8853 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8854 | ||
1100a63c CY |
8855 | DEFSYM (Qcount, "count"); |
8856 | DEFSYM (Qextension_data, "extension-data"); | |
8857 | DEFSYM (Qdelay, "delay"); | |
8858 | ||
8859 | DEFSYM (QCascent, ":ascent"); | |
8860 | DEFSYM (QCmargin, ":margin"); | |
8861 | DEFSYM (QCrelief, ":relief"); | |
8862 | DEFSYM (QCconversion, ":conversion"); | |
8863 | DEFSYM (QCcolor_symbols, ":color-symbols"); | |
8864 | DEFSYM (QCheuristic_mask, ":heuristic-mask"); | |
8865 | DEFSYM (QCindex, ":index"); | |
8866 | DEFSYM (QCgeometry, ":geometry"); | |
8867 | DEFSYM (QCcrop, ":crop"); | |
8868 | DEFSYM (QCrotation, ":rotation"); | |
8869 | DEFSYM (QCmatrix, ":matrix"); | |
8870 | DEFSYM (QCcolor_adjustment, ":color-adjustment"); | |
8871 | DEFSYM (QCmask, ":mask"); | |
8872 | ||
8873 | DEFSYM (Qlaplace, "laplace"); | |
8874 | DEFSYM (Qemboss, "emboss"); | |
8875 | DEFSYM (Qedge_detection, "edge-detection"); | |
8876 | DEFSYM (Qheuristic, "heuristic"); | |
8877 | ||
8878 | DEFSYM (Qpostscript, "postscript"); | |
4ef0d4d0 | 8879 | #ifdef HAVE_GHOSTSCRIPT |
5fc9fdeb | 8880 | ADD_IMAGE_TYPE (Qpostscript); |
1100a63c CY |
8881 | DEFSYM (QCloader, ":loader"); |
8882 | DEFSYM (QCbounding_box, ":bounding-box"); | |
8883 | DEFSYM (QCpt_width, ":pt-width"); | |
8884 | DEFSYM (QCpt_height, ":pt-height"); | |
4ef0d4d0 KS |
8885 | #endif /* HAVE_GHOSTSCRIPT */ |
8886 | ||
5be1c984 | 8887 | #ifdef HAVE_NTGUI |
1100a63c | 8888 | DEFSYM (Qlibpng_version, "libpng-version"); |
0514b4be | 8889 | Fset (Qlibpng_version, |
5be1c984 | 8890 | #if HAVE_PNG |
0514b4be | 8891 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8892 | #else |
0514b4be | 8893 | make_number (-1) |
5be1c984 | 8894 | #endif |
0514b4be | 8895 | ); |
5be1c984 EZ |
8896 | #endif |
8897 | ||
bb4d86b4 CY |
8898 | DEFSYM (Qpbm, "pbm"); |
8899 | ADD_IMAGE_TYPE (Qpbm); | |
8900 | ||
8901 | DEFSYM (Qxbm, "xbm"); | |
8902 | ADD_IMAGE_TYPE (Qxbm); | |
8903 | ||
9e2a2647 | 8904 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
1100a63c | 8905 | DEFSYM (Qxpm, "xpm"); |
5fc9fdeb | 8906 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8907 | #endif |
8908 | ||
9e2a2647 | 8909 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
1100a63c | 8910 | DEFSYM (Qjpeg, "jpeg"); |
5fc9fdeb | 8911 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8912 | #endif |
8913 | ||
9e2a2647 | 8914 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
1100a63c | 8915 | DEFSYM (Qtiff, "tiff"); |
5fc9fdeb | 8916 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8917 | #endif |
8918 | ||
9e2a2647 | 8919 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
1100a63c | 8920 | DEFSYM (Qgif, "gif"); |
5fc9fdeb | 8921 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8922 | #endif |
8923 | ||
9e2a2647 | 8924 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
1100a63c | 8925 | DEFSYM (Qpng, "png"); |
5fc9fdeb | 8926 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8927 | #endif |
8928 | ||
3de25479 | 8929 | #if defined (HAVE_IMAGEMAGICK) |
1100a63c | 8930 | DEFSYM (Qimagemagick, "imagemagick"); |
3de25479 JV |
8931 | ADD_IMAGE_TYPE (Qimagemagick); |
8932 | #endif | |
7574650a | 8933 | |
4ab27a43 | 8934 | #if defined (HAVE_RSVG) |
1100a63c | 8935 | DEFSYM (Qsvg, "svg"); |
5fc9fdeb JR |
8936 | ADD_IMAGE_TYPE (Qsvg); |
8937 | #ifdef HAVE_NTGUI | |
df23bf08 | 8938 | /* Other libraries used directly by svg code. */ |
1100a63c CY |
8939 | DEFSYM (Qgdk_pixbuf, "gdk-pixbuf"); |
8940 | DEFSYM (Qglib, "glib"); | |
8941 | DEFSYM (Qgobject, "gobject"); | |
5fc9fdeb JR |
8942 | #endif /* HAVE_NTGUI */ |
8943 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8944 | |
0855eb52 | 8945 | defsubr (&Sinit_image_library); |
7574650a | 8946 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8947 | defsubr (&Simagemagick_types); |
7574650a | 8948 | #endif |
4ef0d4d0 | 8949 | defsubr (&Sclear_image_cache); |
110683ad | 8950 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8951 | defsubr (&Simage_size); |
8952 | defsubr (&Simage_mask_p); | |
1546c559 | 8953 | defsubr (&Simage_metadata); |
4ef0d4d0 | 8954 | |
e509cfa6 | 8955 | #ifdef GLYPH_DEBUG |
4ef0d4d0 KS |
8956 | defsubr (&Simagep); |
8957 | defsubr (&Slookup_image); | |
8958 | #endif | |
8959 | ||
29208e82 | 8960 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 8961 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 8962 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
8963 | A cross is always drawn on black & white displays. */); |
8964 | cross_disabled_images = 0; | |
8965 | ||
29208e82 | 8966 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 KS |
8967 | doc: /* List of directories to search for window system bitmap files. */); |
8968 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
8969 | ||
29208e82 | 8970 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
8971 | doc: /* Maximum time after which images are removed from the cache. |
8972 | When an image has not been displayed this many seconds, Emacs | |
8973 | automatically removes it from the image cache. If the cache contains | |
8974 | a large number of images, the actual eviction time may be shorter. | |
8975 | The value can also be nil, meaning the cache is never cleared. | |
8976 | ||
8977 | The function `clear-image-cache' disregards this variable. */); | |
8978 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 8979 | #ifdef HAVE_IMAGEMAGICK |
af008560 GM |
8980 | DEFVAR_INT ("imagemagick-render-type", imagemagick_render_type, |
8981 | doc: /* Integer indicating which ImageMagick rendering method to use. | |
8982 | The options are: | |
8983 | 0 -- the default method (pixel pushing) | |
8984 | 1 -- a newer method ("MagickExportImagePixels") that may perform | |
8985 | better (speed etc) in some cases, but has not been as thoroughly | |
8986 | tested with Emacs as the default method. This method requires | |
8987 | ImageMagick version 6.4.6 (approximately) or later. | |
8988 | */); | |
8989 | /* MagickExportImagePixels is in 6.4.6-9, but not 6.4.4-10. */ | |
8990 | imagemagick_render_type = 0; | |
7574650a | 8991 | #endif |
4ef0d4d0 | 8992 | |
4ef0d4d0 | 8993 | } |