Commit | Line | Data |
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4ef0d4d0 | 1 | /* Functions for image support on window system. |
32d72c2f GM |
2 | |
3 | Copyright (C) 1989, 1992-2012 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 KS |
70 | |
71 | #define RGB_PIXEL_COLOR unsigned long | |
72 | ||
9ecf6403 YM |
73 | #define PIX_MASK_RETAIN 0 |
74 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
75 | #endif /* HAVE_X_WINDOWS */ |
76 | ||
4ef0d4d0 | 77 | #ifdef HAVE_NTGUI |
a9e7a9d5 PE |
78 | |
79 | /* We need (or want) w32.h only when we're _not_ compiling for Cygwin. */ | |
80 | #ifdef WINDOWSNT | |
0fda9b75 | 81 | # include "w32.h" |
a9e7a9d5 PE |
82 | #endif |
83 | ||
4ef0d4d0 KS |
84 | /* W32_TODO : Color tables on W32. */ |
85 | #undef COLOR_TABLE_SUPPORT | |
86 | ||
87 | typedef struct w32_bitmap_record Bitmap_Record; | |
5e617bc2 | 88 | #define GET_PIXEL(ximg, x, y) GetPixel (ximg, x, y) |
4ef0d4d0 | 89 | #define NO_PIXMAP 0 |
4ef0d4d0 KS |
90 | |
91 | #define RGB_PIXEL_COLOR COLORREF | |
92 | ||
9ecf6403 YM |
93 | #define PIX_MASK_RETAIN 0 |
94 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 | 95 | |
4ef0d4d0 KS |
96 | #define x_defined_color w32_defined_color |
97 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 | 98 | |
5be1c984 EZ |
99 | /* Version of libpng that we were compiled with, or -1 if no PNG |
100 | support was compiled in. This is tested by w32-win.el to correctly | |
101 | set up the alist used to search for PNG libraries. */ | |
102 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
103 | #endif /* HAVE_NTGUI */ |
104 | ||
edfda783 | 105 | #ifdef HAVE_NS |
edfda783 AR |
106 | #undef COLOR_TABLE_SUPPORT |
107 | ||
108 | typedef struct ns_bitmap_record Bitmap_Record; | |
109 | ||
5e617bc2 | 110 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
edfda783 AR |
111 | #define NO_PIXMAP 0 |
112 | ||
113 | #define RGB_PIXEL_COLOR unsigned long | |
114 | #define ZPixmap 0 | |
115 | ||
116 | #define PIX_MASK_RETAIN 0 | |
117 | #define PIX_MASK_DRAW 1 | |
118 | ||
edfda783 AR |
119 | #define x_defined_color(f, name, color_def, alloc) \ |
120 | ns_defined_color (f, name, color_def, alloc, 0) | |
9e50ff0c | 121 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
122 | #endif /* HAVE_NS */ |
123 | ||
124 | ||
97ec208f DN |
125 | /* The symbol `postscript' identifying images of this type. */ |
126 | ||
955cbe7b | 127 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 128 | |
f57e2426 J |
129 | static void x_disable_image (struct frame *, struct image *); |
130 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
131 | Lisp_Object); | |
4ef0d4d0 | 132 | |
f57e2426 J |
133 | static void init_color_table (void); |
134 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 135 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
136 | static void free_color_table (void); |
137 | static unsigned long *colors_in_color_table (int *n); | |
4ef0d4d0 KS |
138 | #endif |
139 | ||
140 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
141 | id, which is just an int that this section returns. Bitmaps are | |
142 | reference counted so they can be shared among frames. | |
143 | ||
144 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
145 | be used to indicate no bitmap. | |
146 | ||
147 | If you use x_create_bitmap_from_data, then you must keep track of | |
148 | the bitmaps yourself. That is, creating a bitmap from the same | |
149 | data more than once will not be caught. */ | |
150 | ||
edfda783 AR |
151 | #ifdef HAVE_NS |
152 | XImagePtr | |
153 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
154 | unsigned int width, unsigned int height, | |
155 | unsigned long plane_mask, int format) | |
156 | { | |
6fb5f7da | 157 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 158 | ns_retain_object (pixmap); |
edfda783 AR |
159 | return pixmap; |
160 | } | |
161 | ||
162 | /* use with imgs created by ns_image_for_XPM */ | |
163 | unsigned long | |
164 | XGetPixel (XImagePtr ximage, int x, int y) | |
165 | { | |
ed3751c8 | 166 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
167 | } |
168 | ||
169 | /* use with imgs created by ns_image_for_XPM; alpha set to 1; | |
170 | pixel is assumed to be in form RGB */ | |
171 | void | |
172 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
173 | { | |
ed3751c8 | 174 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
175 | } |
176 | #endif /* HAVE_NS */ | |
177 | ||
4ef0d4d0 KS |
178 | |
179 | /* Functions to access the contents of a bitmap, given an id. */ | |
180 | ||
181 | int | |
0766b489 | 182 | x_bitmap_height (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
183 | { |
184 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
185 | } | |
186 | ||
187 | int | |
0766b489 | 188 | x_bitmap_width (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
189 | { |
190 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
191 | } | |
192 | ||
193 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
62aba0d4 | 194 | ptrdiff_t |
0766b489 | 195 | x_bitmap_pixmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 | 196 | { |
f6cfbd8f | 197 | /* HAVE_NTGUI needs the explicit cast here. */ |
62aba0d4 | 198 | return (ptrdiff_t) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; |
4ef0d4d0 KS |
199 | } |
200 | #endif | |
201 | ||
202 | #ifdef HAVE_X_WINDOWS | |
203 | int | |
0766b489 | 204 | x_bitmap_mask (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
205 | { |
206 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
207 | } | |
208 | #endif | |
209 | ||
210 | /* Allocate a new bitmap record. Returns index of new record. */ | |
211 | ||
0766b489 | 212 | static ptrdiff_t |
d3da34e0 | 213 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
214 | { |
215 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 216 | ptrdiff_t i; |
4ef0d4d0 | 217 | |
4ef0d4d0 KS |
218 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) |
219 | return ++dpyinfo->bitmaps_last; | |
220 | ||
221 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
222 | if (dpyinfo->bitmaps[i].refcount == 0) | |
223 | return i + 1; | |
224 | ||
a69fbedb PE |
225 | dpyinfo->bitmaps = |
226 | xpalloc (dpyinfo->bitmaps, &dpyinfo->bitmaps_size, | |
227 | 10, -1, sizeof *dpyinfo->bitmaps); | |
4ef0d4d0 KS |
228 | return ++dpyinfo->bitmaps_last; |
229 | } | |
230 | ||
231 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
232 | ||
233 | void | |
13464394 | 234 | x_reference_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
235 | { |
236 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
237 | } | |
238 | ||
239 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
240 | ||
0766b489 | 241 | ptrdiff_t |
d3da34e0 | 242 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
243 | { |
244 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 245 | ptrdiff_t id; |
4ef0d4d0 KS |
246 | |
247 | #ifdef HAVE_X_WINDOWS | |
248 | Pixmap bitmap; | |
249 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
250 | bits, width, height); | |
251 | if (! bitmap) | |
252 | return -1; | |
253 | #endif /* HAVE_X_WINDOWS */ | |
254 | ||
255 | #ifdef HAVE_NTGUI | |
256 | Pixmap bitmap; | |
257 | bitmap = CreateBitmap (width, height, | |
258 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
259 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
260 | bits); | |
261 | if (! bitmap) | |
262 | return -1; | |
263 | #endif /* HAVE_NTGUI */ | |
264 | ||
edfda783 | 265 | #ifdef HAVE_NS |
ed3751c8 | 266 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
267 | if (!bitmap) |
268 | return -1; | |
269 | #endif | |
270 | ||
4ef0d4d0 | 271 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 272 | |
edfda783 AR |
273 | #ifdef HAVE_NS |
274 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
275 | dpyinfo->bitmaps[id - 1].depth = 1; | |
276 | #endif | |
277 | ||
4ef0d4d0 KS |
278 | dpyinfo->bitmaps[id - 1].file = NULL; |
279 | dpyinfo->bitmaps[id - 1].height = height; | |
280 | dpyinfo->bitmaps[id - 1].width = width; | |
281 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
282 | ||
283 | #ifdef HAVE_X_WINDOWS | |
284 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
285 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
286 | dpyinfo->bitmaps[id - 1].depth = 1; | |
287 | #endif /* HAVE_X_WINDOWS */ | |
288 | ||
289 | #ifdef HAVE_NTGUI | |
290 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
291 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
292 | dpyinfo->bitmaps[id - 1].depth = 1; | |
293 | #endif /* HAVE_NTGUI */ | |
294 | ||
295 | return id; | |
296 | } | |
297 | ||
298 | /* Create bitmap from file FILE for frame F. */ | |
299 | ||
0766b489 | 300 | ptrdiff_t |
d3da34e0 | 301 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 302 | { |
edfda783 AR |
303 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
304 | ||
4ef0d4d0 KS |
305 | #ifdef HAVE_NTGUI |
306 | return -1; /* W32_TODO : bitmap support */ | |
307 | #endif /* HAVE_NTGUI */ | |
308 | ||
edfda783 | 309 | #ifdef HAVE_NS |
0766b489 | 310 | ptrdiff_t id; |
ed3751c8 | 311 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
312 | |
313 | if (!bitmap) | |
314 | return -1; | |
315 | ||
316 | ||
317 | id = x_allocate_bitmap_record (f); | |
318 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
319 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 320 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
edfda783 | 321 | dpyinfo->bitmaps[id - 1].depth = 1; |
ed3751c8 JB |
322 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
323 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
6045c4fd | 324 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
edfda783 AR |
325 | return id; |
326 | #endif | |
327 | ||
4ef0d4d0 | 328 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
329 | unsigned int width, height; |
330 | Pixmap bitmap; | |
0766b489 PE |
331 | int xhot, yhot, result; |
332 | ptrdiff_t id; | |
4ef0d4d0 KS |
333 | Lisp_Object found; |
334 | int fd; | |
335 | char *filename; | |
336 | ||
337 | /* Look for an existing bitmap with the same name. */ | |
338 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
339 | { | |
340 | if (dpyinfo->bitmaps[id].refcount | |
341 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 342 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
343 | { |
344 | ++dpyinfo->bitmaps[id].refcount; | |
345 | return id + 1; | |
346 | } | |
347 | } | |
348 | ||
349 | /* Search bitmap-file-path for the file, if appropriate. */ | |
350 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
351 | if (fd < 0) | |
352 | return -1; | |
353 | emacs_close (fd); | |
354 | ||
51b59d79 | 355 | filename = SSDATA (found); |
4ef0d4d0 KS |
356 | |
357 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
358 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
359 | if (result != BitmapSuccess) | |
360 | return -1; | |
361 | ||
362 | id = x_allocate_bitmap_record (f); | |
363 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
364 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
365 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 366 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
4ef0d4d0 KS |
367 | dpyinfo->bitmaps[id - 1].depth = 1; |
368 | dpyinfo->bitmaps[id - 1].height = height; | |
369 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 370 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
371 | |
372 | return id; | |
373 | #endif /* HAVE_X_WINDOWS */ | |
374 | } | |
375 | ||
376 | /* Free bitmap B. */ | |
377 | ||
378 | static void | |
d3da34e0 | 379 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
380 | { |
381 | #ifdef HAVE_X_WINDOWS | |
382 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
383 | if (bm->have_mask) | |
384 | XFreePixmap (dpyinfo->display, bm->mask); | |
385 | #endif /* HAVE_X_WINDOWS */ | |
386 | ||
387 | #ifdef HAVE_NTGUI | |
388 | DeleteObject (bm->pixmap); | |
389 | #endif /* HAVE_NTGUI */ | |
390 | ||
edfda783 | 391 | #ifdef HAVE_NS |
ed3751c8 | 392 | ns_release_object (bm->img); |
edfda783 AR |
393 | #endif |
394 | ||
4ef0d4d0 KS |
395 | if (bm->file) |
396 | { | |
397 | xfree (bm->file); | |
398 | bm->file = NULL; | |
399 | } | |
400 | } | |
401 | ||
402 | /* Remove reference to bitmap with id number ID. */ | |
403 | ||
404 | void | |
0766b489 | 405 | x_destroy_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
406 | { |
407 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
408 | ||
409 | if (id > 0) | |
410 | { | |
411 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
412 | ||
413 | if (--bm->refcount == 0) | |
414 | { | |
4d7e6e51 | 415 | block_input (); |
65342ae3 | 416 | free_bitmap_record (dpyinfo, bm); |
4d7e6e51 | 417 | unblock_input (); |
4ef0d4d0 KS |
418 | } |
419 | } | |
420 | } | |
421 | ||
422 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
423 | ||
424 | void | |
d3da34e0 | 425 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 | 426 | { |
0766b489 | 427 | ptrdiff_t i; |
4ef0d4d0 KS |
428 | Bitmap_Record *bm = dpyinfo->bitmaps; |
429 | ||
430 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
431 | if (bm->refcount > 0) | |
65342ae3 | 432 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
433 | |
434 | dpyinfo->bitmaps_last = 0; | |
435 | } | |
436 | ||
578098f3 PE |
437 | static bool x_create_x_image_and_pixmap (struct frame *, int, int, int, |
438 | XImagePtr *, Pixmap *); | |
439 | static void x_destroy_x_image (XImagePtr ximg); | |
4ef0d4d0 KS |
440 | |
441 | #ifdef HAVE_X_WINDOWS | |
442 | ||
443 | /* Useful functions defined in the section | |
444 | `Image type independent image structures' below. */ | |
445 | ||
f57e2426 J |
446 | static unsigned long four_corners_best (XImagePtr ximg, |
447 | int *corners, | |
448 | unsigned long width, | |
449 | unsigned long height); | |
4ef0d4d0 | 450 | |
4ef0d4d0 KS |
451 | |
452 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
453 | It's nicer with some borders in this context */ | |
454 | ||
578098f3 | 455 | void |
0766b489 | 456 | x_create_bitmap_mask (struct frame *f, ptrdiff_t id) |
4ef0d4d0 KS |
457 | { |
458 | Pixmap pixmap, mask; | |
459 | XImagePtr ximg, mask_img; | |
460 | unsigned long width, height; | |
578098f3 | 461 | bool result; |
4ef0d4d0 KS |
462 | unsigned long bg; |
463 | unsigned long x, y, xp, xm, yp, ym; | |
464 | GC gc; | |
465 | ||
466 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
467 | ||
468 | if (!(id > 0)) | |
578098f3 | 469 | return; |
4ef0d4d0 KS |
470 | |
471 | pixmap = x_bitmap_pixmap (f, id); | |
472 | width = x_bitmap_width (f, id); | |
473 | height = x_bitmap_height (f, id); | |
474 | ||
4d7e6e51 | 475 | block_input (); |
4ef0d4d0 KS |
476 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, |
477 | ~0, ZPixmap); | |
478 | ||
479 | if (!ximg) | |
480 | { | |
4d7e6e51 | 481 | unblock_input (); |
578098f3 | 482 | return; |
4ef0d4d0 KS |
483 | } |
484 | ||
485 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
486 | ||
4d7e6e51 | 487 | unblock_input (); |
4ef0d4d0 KS |
488 | if (!result) |
489 | { | |
490 | XDestroyImage (ximg); | |
578098f3 | 491 | return; |
4ef0d4d0 KS |
492 | } |
493 | ||
6ac3c7bb | 494 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
495 | |
496 | for (y = 0; y < ximg->height; ++y) | |
497 | { | |
498 | for (x = 0; x < ximg->width; ++x) | |
499 | { | |
500 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
501 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
502 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
503 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
504 | if (XGetPixel (ximg, x, y) == bg | |
505 | && XGetPixel (ximg, x, yp) == bg | |
506 | && XGetPixel (ximg, x, ym) == bg | |
507 | && XGetPixel (ximg, xp, y) == bg | |
508 | && XGetPixel (ximg, xp, yp) == bg | |
509 | && XGetPixel (ximg, xp, ym) == bg | |
510 | && XGetPixel (ximg, xm, y) == bg | |
511 | && XGetPixel (ximg, xm, yp) == bg | |
512 | && XGetPixel (ximg, xm, ym) == bg) | |
513 | XPutPixel (mask_img, x, y, 0); | |
514 | else | |
515 | XPutPixel (mask_img, x, y, 1); | |
516 | } | |
517 | } | |
518 | ||
4d7e6e51 | 519 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
520 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); |
521 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
522 | width, height); | |
523 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
524 | ||
525 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
526 | dpyinfo->bitmaps[id - 1].mask = mask; | |
527 | ||
528 | XDestroyImage (ximg); | |
529 | x_destroy_x_image (mask_img); | |
4ef0d4d0 KS |
530 | } |
531 | ||
532 | #endif /* HAVE_X_WINDOWS */ | |
533 | ||
534 | ||
535 | /*********************************************************************** | |
536 | Image types | |
537 | ***********************************************************************/ | |
538 | ||
4ef0d4d0 KS |
539 | /* List of supported image types. Use define_image_type to add new |
540 | types. Use lookup_image_type to find a type for a given symbol. */ | |
541 | ||
542 | static struct image_type *image_types; | |
543 | ||
544 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ | |
545 | ||
955cbe7b | 546 | static Lisp_Object Qxbm; |
4ef0d4d0 KS |
547 | |
548 | /* Keywords. */ | |
549 | ||
955cbe7b | 550 | Lisp_Object QCascent, QCmargin, QCrelief; |
955cbe7b PE |
551 | Lisp_Object QCconversion; |
552 | static Lisp_Object QCheuristic_mask; | |
553 | static Lisp_Object QCcolor_symbols; | |
554 | static Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask, QCgeometry; | |
555 | static Lisp_Object QCcrop, QCrotation; | |
4ef0d4d0 KS |
556 | |
557 | /* Other symbols. */ | |
558 | ||
1100a63c | 559 | static Lisp_Object Qcount, Qextension_data, Qdelay; |
955cbe7b | 560 | static Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; |
4ef0d4d0 | 561 | |
578098f3 | 562 | /* Forward function prototypes. */ |
4ef0d4d0 | 563 | |
641cfd14 | 564 | static struct image_type *lookup_image_type (Lisp_Object); |
f57e2426 J |
565 | static void x_laplace (struct frame *, struct image *); |
566 | static void x_emboss (struct frame *, struct image *); | |
578098f3 | 567 | static void x_build_heuristic_mask (struct frame *, struct image *, |
36a305a7 | 568 | Lisp_Object); |
0fda9b75 DC |
569 | #ifdef WINDOWSNT |
570 | extern Lisp_Object Vlibrary_cache; | |
0855eb52 | 571 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 572 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
573 | #else |
574 | #define CACHE_IMAGE_TYPE(type, status) | |
a9e7a9d5 | 575 | #endif |
0855eb52 JB |
576 | |
577 | #define ADD_IMAGE_TYPE(type) \ | |
578 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
579 | |
580 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 581 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 582 | |
bb4d86b4 | 583 | static struct image_type * |
d07ff9db | 584 | define_image_type (struct image_type *type) |
4ef0d4d0 | 585 | { |
bb4d86b4 CY |
586 | struct image_type *p = NULL; |
587 | Lisp_Object target_type = *type->type; | |
578098f3 | 588 | bool type_valid = 1; |
0855eb52 | 589 | |
4d7e6e51 | 590 | block_input (); |
bb4d86b4 CY |
591 | |
592 | for (p = image_types; p; p = p->next) | |
593 | if (EQ (*p->type, target_type)) | |
594 | goto done; | |
595 | ||
596 | if (type->init) | |
0855eb52 | 597 | { |
a9e7a9d5 | 598 | #if defined HAVE_NTGUI && defined WINDOWSNT |
bb4d86b4 CY |
599 | /* If we failed to load the library before, don't try again. */ |
600 | Lisp_Object tested = Fassq (target_type, Vlibrary_cache); | |
601 | if (CONSP (tested) && NILP (XCDR (tested))) | |
602 | type_valid = 0; | |
603 | else | |
604 | #endif | |
605 | { | |
d07ff9db | 606 | type_valid = type->init (); |
bb4d86b4 CY |
607 | CACHE_IMAGE_TYPE (target_type, type_valid ? Qt : Qnil); |
608 | } | |
609 | } | |
09c01941 | 610 | |
bb4d86b4 | 611 | if (type_valid) |
0855eb52 JB |
612 | { |
613 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
614 | The initialized data segment is read-only. */ | |
09c01941 | 615 | p = xmalloc (sizeof *p); |
ae1d87e2 | 616 | *p = *type; |
0855eb52 JB |
617 | p->next = image_types; |
618 | image_types = p; | |
0855eb52 JB |
619 | } |
620 | ||
bb4d86b4 | 621 | done: |
4d7e6e51 | 622 | unblock_input (); |
bb4d86b4 | 623 | return p; |
4ef0d4d0 KS |
624 | } |
625 | ||
626 | ||
578098f3 | 627 | /* Value is true if OBJECT is a valid Lisp image specification. A |
4ef0d4d0 KS |
628 | valid image specification is a list whose car is the symbol |
629 | `image', and whose rest is a property list. The property list must | |
630 | contain a value for key `:type'. That value must be the name of a | |
631 | supported image type. The rest of the property list depends on the | |
632 | image type. */ | |
633 | ||
578098f3 | 634 | bool |
d3da34e0 | 635 | valid_image_p (Lisp_Object object) |
4ef0d4d0 | 636 | { |
578098f3 | 637 | bool valid_p = 0; |
4ef0d4d0 KS |
638 | |
639 | if (IMAGEP (object)) | |
640 | { | |
641 | Lisp_Object tem; | |
642 | ||
643 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
644 | if (EQ (XCAR (tem), QCtype)) | |
645 | { | |
646 | tem = XCDR (tem); | |
647 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
648 | { | |
649 | struct image_type *type; | |
650 | type = lookup_image_type (XCAR (tem)); | |
651 | if (type) | |
652 | valid_p = type->valid_p (object); | |
653 | } | |
654 | ||
655 | break; | |
656 | } | |
657 | } | |
658 | ||
659 | return valid_p; | |
660 | } | |
661 | ||
662 | ||
663 | /* Log error message with format string FORMAT and argument ARG. | |
664 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
665 | good idea because this would interrupt redisplay, and the error | |
666 | message display would lead to another redisplay. This function | |
667 | therefore simply displays a message. */ | |
668 | ||
669 | static void | |
675e2c69 | 670 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
671 | { |
672 | add_to_log (format, arg1, arg2); | |
673 | } | |
674 | ||
675 | ||
676 | \f | |
677 | /*********************************************************************** | |
678 | Image specifications | |
679 | ***********************************************************************/ | |
680 | ||
681 | enum image_value_type | |
682 | { | |
683 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
684 | IMAGE_STRING_VALUE, | |
685 | IMAGE_STRING_OR_NIL_VALUE, | |
686 | IMAGE_SYMBOL_VALUE, | |
687 | IMAGE_POSITIVE_INTEGER_VALUE, | |
c4a07a4c | 688 | IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, |
4ef0d4d0 KS |
689 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, |
690 | IMAGE_ASCENT_VALUE, | |
691 | IMAGE_INTEGER_VALUE, | |
692 | IMAGE_FUNCTION_VALUE, | |
693 | IMAGE_NUMBER_VALUE, | |
694 | IMAGE_BOOL_VALUE | |
695 | }; | |
696 | ||
697 | /* Structure used when parsing image specifications. */ | |
698 | ||
699 | struct image_keyword | |
700 | { | |
701 | /* Name of keyword. */ | |
675e2c69 | 702 | const char *name; |
4ef0d4d0 KS |
703 | |
704 | /* The type of value allowed. */ | |
705 | enum image_value_type type; | |
706 | ||
578098f3 PE |
707 | /* True means key must be present. */ |
708 | bool mandatory_p; | |
4ef0d4d0 KS |
709 | |
710 | /* Used to recognize duplicate keywords in a property list. */ | |
711 | int count; | |
712 | ||
713 | /* The value that was found. */ | |
714 | Lisp_Object value; | |
715 | }; | |
716 | ||
717 | ||
4ef0d4d0 KS |
718 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec |
719 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
720 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
721 | image_keywords structures of size NKEYWORDS describing other | |
578098f3 | 722 | allowed keyword/value pairs. Value is true if SPEC is valid. */ |
4ef0d4d0 | 723 | |
578098f3 | 724 | static bool |
d3da34e0 JB |
725 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
726 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
727 | { |
728 | int i; | |
729 | Lisp_Object plist; | |
730 | ||
731 | if (!IMAGEP (spec)) | |
732 | return 0; | |
733 | ||
734 | plist = XCDR (spec); | |
735 | while (CONSP (plist)) | |
736 | { | |
737 | Lisp_Object key, value; | |
738 | ||
739 | /* First element of a pair must be a symbol. */ | |
740 | key = XCAR (plist); | |
741 | plist = XCDR (plist); | |
742 | if (!SYMBOLP (key)) | |
743 | return 0; | |
744 | ||
745 | /* There must follow a value. */ | |
746 | if (!CONSP (plist)) | |
747 | return 0; | |
748 | value = XCAR (plist); | |
749 | plist = XCDR (plist); | |
750 | ||
751 | /* Find key in KEYWORDS. Error if not found. */ | |
752 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 753 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
754 | break; |
755 | ||
756 | if (i == nkeywords) | |
757 | continue; | |
758 | ||
759 | /* Record that we recognized the keyword. If a keywords | |
760 | was found more than once, it's an error. */ | |
761 | keywords[i].value = value; | |
4ef0d4d0 KS |
762 | if (keywords[i].count > 1) |
763 | return 0; | |
d311d28c | 764 | ++keywords[i].count; |
4ef0d4d0 KS |
765 | |
766 | /* Check type of value against allowed type. */ | |
767 | switch (keywords[i].type) | |
768 | { | |
769 | case IMAGE_STRING_VALUE: | |
770 | if (!STRINGP (value)) | |
771 | return 0; | |
772 | break; | |
773 | ||
774 | case IMAGE_STRING_OR_NIL_VALUE: | |
775 | if (!STRINGP (value) && !NILP (value)) | |
776 | return 0; | |
777 | break; | |
778 | ||
779 | case IMAGE_SYMBOL_VALUE: | |
780 | if (!SYMBOLP (value)) | |
781 | return 0; | |
782 | break; | |
783 | ||
784 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
13464394 | 785 | if (! RANGED_INTEGERP (1, value, INT_MAX)) |
4ef0d4d0 KS |
786 | return 0; |
787 | break; | |
788 | ||
c4a07a4c PE |
789 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR: |
790 | if (RANGED_INTEGERP (0, value, INT_MAX)) | |
4ef0d4d0 KS |
791 | break; |
792 | if (CONSP (value) | |
c4a07a4c PE |
793 | && RANGED_INTEGERP (0, XCAR (value), INT_MAX) |
794 | && RANGED_INTEGERP (0, XCDR (value), INT_MAX)) | |
4ef0d4d0 KS |
795 | break; |
796 | return 0; | |
797 | ||
798 | case IMAGE_ASCENT_VALUE: | |
799 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
800 | break; | |
13464394 | 801 | else if (RANGED_INTEGERP (0, value, 100)) |
4ef0d4d0 KS |
802 | break; |
803 | return 0; | |
804 | ||
805 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
13464394 PE |
806 | /* Unlike the other integer-related cases, this one does not |
807 | verify that VALUE fits in 'int'. This is because callers | |
808 | want EMACS_INT. */ | |
4ef0d4d0 KS |
809 | if (!INTEGERP (value) || XINT (value) < 0) |
810 | return 0; | |
811 | break; | |
812 | ||
813 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
814 | break; | |
815 | ||
816 | case IMAGE_FUNCTION_VALUE: | |
817 | value = indirect_function (value); | |
ca105506 | 818 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
819 | break; |
820 | return 0; | |
821 | ||
822 | case IMAGE_NUMBER_VALUE: | |
823 | if (!INTEGERP (value) && !FLOATP (value)) | |
824 | return 0; | |
825 | break; | |
826 | ||
827 | case IMAGE_INTEGER_VALUE: | |
13464394 | 828 | if (! TYPE_RANGED_INTEGERP (int, value)) |
4ef0d4d0 KS |
829 | return 0; |
830 | break; | |
831 | ||
832 | case IMAGE_BOOL_VALUE: | |
833 | if (!NILP (value) && !EQ (value, Qt)) | |
834 | return 0; | |
835 | break; | |
836 | ||
837 | default: | |
1088b922 | 838 | emacs_abort (); |
4ef0d4d0 KS |
839 | break; |
840 | } | |
841 | ||
842 | if (EQ (key, QCtype) && !EQ (type, value)) | |
843 | return 0; | |
844 | } | |
845 | ||
846 | /* Check that all mandatory fields are present. */ | |
847 | for (i = 0; i < nkeywords; ++i) | |
848 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
849 | return 0; | |
850 | ||
851 | return NILP (plist); | |
852 | } | |
853 | ||
854 | ||
855 | /* Return the value of KEY in image specification SPEC. Value is nil | |
578098f3 PE |
856 | if KEY is not present in SPEC. Set *FOUND depending on whether KEY |
857 | was found in SPEC. */ | |
4ef0d4d0 KS |
858 | |
859 | static Lisp_Object | |
578098f3 | 860 | image_spec_value (Lisp_Object spec, Lisp_Object key, bool *found) |
4ef0d4d0 KS |
861 | { |
862 | Lisp_Object tail; | |
863 | ||
a54e2c05 | 864 | eassert (valid_image_p (spec)); |
4ef0d4d0 KS |
865 | |
866 | for (tail = XCDR (spec); | |
867 | CONSP (tail) && CONSP (XCDR (tail)); | |
868 | tail = XCDR (XCDR (tail))) | |
869 | { | |
870 | if (EQ (XCAR (tail), key)) | |
871 | { | |
872 | if (found) | |
873 | *found = 1; | |
874 | return XCAR (XCDR (tail)); | |
875 | } | |
876 | } | |
877 | ||
878 | if (found) | |
879 | *found = 0; | |
880 | return Qnil; | |
881 | } | |
882 | ||
883 | ||
884 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
885 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
886 | PIXELS non-nil means return the size in pixels, otherwise return the | |
887 | size in canonical character units. | |
888 | FRAME is the frame on which the image will be displayed. FRAME nil | |
889 | or omitted means use the selected frame. */) | |
5842a27b | 890 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
891 | { |
892 | Lisp_Object size; | |
893 | ||
894 | size = Qnil; | |
895 | if (valid_image_p (spec)) | |
896 | { | |
897 | struct frame *f = check_x_frame (frame); | |
13464394 | 898 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
899 | struct image *img = IMAGE_FROM_ID (f, id); |
900 | int width = img->width + 2 * img->hmargin; | |
901 | int height = img->height + 2 * img->vmargin; | |
902 | ||
903 | if (NILP (pixels)) | |
904 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
905 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
906 | else | |
907 | size = Fcons (make_number (width), make_number (height)); | |
908 | } | |
909 | else | |
910 | error ("Invalid image specification"); | |
911 | ||
912 | return size; | |
913 | } | |
914 | ||
915 | ||
916 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
917 | doc: /* Return t if image SPEC has a mask bitmap. | |
918 | FRAME is the frame on which the image will be displayed. FRAME nil | |
919 | or omitted means use the selected frame. */) | |
5842a27b | 920 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
921 | { |
922 | Lisp_Object mask; | |
923 | ||
924 | mask = Qnil; | |
925 | if (valid_image_p (spec)) | |
926 | { | |
927 | struct frame *f = check_x_frame (frame); | |
13464394 | 928 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
929 | struct image *img = IMAGE_FROM_ID (f, id); |
930 | if (img->mask) | |
931 | mask = Qt; | |
932 | } | |
933 | else | |
934 | error ("Invalid image specification"); | |
935 | ||
936 | return mask; | |
937 | } | |
938 | ||
1546c559 JL |
939 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
940 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
941 | FRAME is the frame on which the image will be displayed. FRAME nil |
942 | or omitted means use the selected frame. */) | |
5842a27b | 943 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
944 | { |
945 | Lisp_Object ext; | |
946 | ||
947 | ext = Qnil; | |
948 | if (valid_image_p (spec)) | |
949 | { | |
950 | struct frame *f = check_x_frame (frame); | |
13464394 | 951 | ptrdiff_t id = lookup_image (f, spec); |
6ac3c7bb | 952 | struct image *img = IMAGE_FROM_ID (f, id); |
b50691aa | 953 | ext = img->lisp_data; |
6ac3c7bb KS |
954 | } |
955 | ||
956 | return ext; | |
957 | } | |
958 | ||
4ef0d4d0 KS |
959 | \f |
960 | /*********************************************************************** | |
961 | Image type independent image structures | |
962 | ***********************************************************************/ | |
963 | ||
11273115 | 964 | #define MAX_IMAGE_SIZE 10.0 |
4ef0d4d0 KS |
965 | /* Allocate and return a new image structure for image specification |
966 | SPEC. SPEC has a hash value of HASH. */ | |
967 | ||
968 | static struct image * | |
0de4bb68 | 969 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 | 970 | { |
23f86fce | 971 | struct image *img = xzalloc (sizeof *img); |
a2bc5bdd | 972 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 | 973 | |
a54e2c05 | 974 | eassert (valid_image_p (spec)); |
a2bc5bdd | 975 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 | 976 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
a54e2c05 | 977 | eassert (img->type != NULL); |
4ef0d4d0 | 978 | img->spec = spec; |
b50691aa | 979 | img->lisp_data = Qnil; |
4ef0d4d0 KS |
980 | img->ascent = DEFAULT_IMAGE_ASCENT; |
981 | img->hash = hash; | |
6ac3c7bb | 982 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
983 | return img; |
984 | } | |
985 | ||
986 | ||
987 | /* Free image IMG which was used on frame F, including its resources. */ | |
988 | ||
989 | static void | |
d3da34e0 | 990 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
991 | { |
992 | if (img) | |
993 | { | |
354884c4 | 994 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
995 | |
996 | /* Remove IMG from the hash table of its cache. */ | |
997 | if (img->prev) | |
998 | img->prev->next = img->next; | |
999 | else | |
1000 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1001 | ||
1002 | if (img->next) | |
1003 | img->next->prev = img->prev; | |
1004 | ||
1005 | c->images[img->id] = NULL; | |
1006 | ||
1007 | /* Free resources, then free IMG. */ | |
1008 | img->type->free (f, img); | |
1009 | xfree (img); | |
1010 | } | |
1011 | } | |
1012 | ||
578098f3 | 1013 | /* Return true if the given widths and heights are valid for display. */ |
f1f25b99 | 1014 | |
578098f3 | 1015 | static bool |
d3da34e0 | 1016 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1017 | { |
7df4765a | 1018 | int w, h; |
f1f25b99 | 1019 | |
7df4765a | 1020 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1021 | return 0; |
1022 | ||
7df4765a | 1023 | if (INTEGERP (Vmax_image_size)) |
3f791afe PE |
1024 | return (width <= XINT (Vmax_image_size) |
1025 | && height <= XINT (Vmax_image_size)); | |
7df4765a KS |
1026 | else if (FLOATP (Vmax_image_size)) |
1027 | { | |
e5d76069 PE |
1028 | if (f != NULL) |
1029 | { | |
1030 | w = FRAME_PIXEL_WIDTH (f); | |
1031 | h = FRAME_PIXEL_HEIGHT (f); | |
1032 | } | |
1033 | else | |
1034 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
3f791afe PE |
1035 | return (width <= XFLOAT_DATA (Vmax_image_size) * w |
1036 | && height <= XFLOAT_DATA (Vmax_image_size) * h); | |
7df4765a KS |
1037 | } |
1038 | else | |
1039 | return 1; | |
f1f25b99 | 1040 | } |
4ef0d4d0 KS |
1041 | |
1042 | /* Prepare image IMG for display on frame F. Must be called before | |
1043 | drawing an image. */ | |
1044 | ||
1045 | void | |
d3da34e0 | 1046 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 | 1047 | { |
4ef0d4d0 | 1048 | /* We're about to display IMG, so set its timestamp to `now'. */ |
e9a9ae03 | 1049 | img->timestamp = current_emacs_time (); |
4ef0d4d0 KS |
1050 | |
1051 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1052 | type dependent loader function. */ | |
1053 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
578098f3 | 1054 | img->load_failed_p = ! img->type->load (f, img); |
c7fea325 | 1055 | |
4ef0d4d0 KS |
1056 | } |
1057 | ||
1058 | ||
1059 | /* Value is the number of pixels for the ascent of image IMG when | |
1060 | drawn in face FACE. */ | |
1061 | ||
1062 | int | |
d3da34e0 | 1063 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1064 | { |
1938bc36 | 1065 | int height; |
4ef0d4d0 KS |
1066 | int ascent; |
1067 | ||
1938bc36 KS |
1068 | if (slice->height == img->height) |
1069 | height = img->height + img->vmargin; | |
1070 | else if (slice->y == 0) | |
1071 | height = slice->height + img->vmargin; | |
1072 | else | |
1073 | height = slice->height; | |
1074 | ||
4ef0d4d0 KS |
1075 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1076 | { | |
1077 | if (face->font) | |
1078 | { | |
1079 | #ifdef HAVE_NTGUI | |
1080 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1081 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1082 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1083 | #else |
1084 | /* This expression is arranged so that if the image can't be | |
1085 | exactly centered, it will be moved slightly up. This is | |
1086 | because a typical font is `top-heavy' (due to the presence | |
1087 | uppercase letters), so the image placement should err towards | |
1088 | being top-heavy too. It also just generally looks better. */ | |
5e617bc2 JB |
1089 | ascent = (height + FONT_BASE (face->font) |
1090 | - FONT_DESCENT (face->font) + 1) / 2; | |
4ef0d4d0 KS |
1091 | #endif /* HAVE_NTGUI */ |
1092 | } | |
1093 | else | |
1094 | ascent = height / 2; | |
1095 | } | |
1096 | else | |
13464394 | 1097 | ascent = height * (img->ascent / 100.0); |
4ef0d4d0 KS |
1098 | |
1099 | return ascent; | |
1100 | } | |
1101 | ||
1102 | \f | |
1103 | /* Image background colors. */ | |
1104 | ||
1105 | /* Find the "best" corner color of a bitmap. | |
1106 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1107 | ||
1108 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1109 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1110 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1111 | { |
f0c77cd1 | 1112 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1113 | int i, best_count; |
1114 | ||
6ac3c7bb KS |
1115 | if (corners && corners[BOT_CORNER] >= 0) |
1116 | { | |
1117 | /* Get the colors at the corner_pixels of ximg. */ | |
1118 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1119 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1120 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1121 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1122 | } | |
1123 | else | |
1124 | { | |
1125 | /* Get the colors at the corner_pixels of ximg. */ | |
1126 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1127 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1128 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1129 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1130 | } | |
4ef0d4d0 KS |
1131 | /* Choose the most frequently found color as background. */ |
1132 | for (i = best_count = 0; i < 4; ++i) | |
1133 | { | |
1134 | int j, n; | |
1135 | ||
1136 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1137 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1138 | ++n; |
1139 | ||
1140 | if (n > best_count) | |
6ac3c7bb | 1141 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1142 | } |
1143 | ||
1144 | return best; | |
1145 | } | |
1146 | ||
1147 | /* Portability macros */ | |
1148 | ||
1149 | #ifdef HAVE_NTGUI | |
1150 | ||
1151 | #define Destroy_Image(img_dc, prev) \ | |
1152 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1153 | ||
1154 | #define Free_Pixmap(display, pixmap) \ | |
1155 | DeleteObject (pixmap) | |
1156 | ||
edfda783 AR |
1157 | #elif defined (HAVE_NS) |
1158 | ||
1159 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1160 | ns_release_object (ximg) |
edfda783 AR |
1161 | |
1162 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1163 | ns_release_object (pixmap) |
edfda783 | 1164 | |
4ef0d4d0 KS |
1165 | #else |
1166 | ||
1167 | #define Destroy_Image(ximg, dummy) \ | |
1168 | XDestroyImage (ximg) | |
1169 | ||
1170 | #define Free_Pixmap(display, pixmap) \ | |
1171 | XFreePixmap (display, pixmap) | |
1172 | ||
edfda783 | 1173 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1174 | |
1175 | ||
1176 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1177 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1178 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1179 | use for the heuristic. */ |
4ef0d4d0 KS |
1180 | |
1181 | RGB_PIXEL_COLOR | |
d3da34e0 | 1182 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1183 | { |
1184 | if (! img->background_valid) | |
1185 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1186 | { | |
578098f3 | 1187 | bool free_ximg = !ximg; |
4ef0d4d0 KS |
1188 | #ifdef HAVE_NTGUI |
1189 | HGDIOBJ prev; | |
1190 | #endif /* HAVE_NTGUI */ | |
1191 | ||
1192 | if (free_ximg) | |
1193 | { | |
1194 | #ifndef HAVE_NTGUI | |
1195 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1196 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1197 | #else | |
1198 | HDC frame_dc = get_frame_dc (f); | |
1199 | ximg = CreateCompatibleDC (frame_dc); | |
1200 | release_frame_dc (f, frame_dc); | |
1201 | prev = SelectObject (ximg, img->pixmap); | |
1202 | #endif /* !HAVE_NTGUI */ | |
1203 | } | |
1204 | ||
6ac3c7bb | 1205 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1206 | |
1207 | if (free_ximg) | |
1208 | Destroy_Image (ximg, prev); | |
1f026899 | 1209 | |
4ef0d4d0 KS |
1210 | img->background_valid = 1; |
1211 | } | |
1212 | ||
1213 | return img->background; | |
1214 | } | |
1215 | ||
1216 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1217 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1218 | existing XImage object to use for the heuristic. */ | |
1219 | ||
1220 | int | |
d3da34e0 | 1221 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1222 | { |
1223 | if (! img->background_transparent_valid) | |
1224 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1225 | { | |
1226 | if (img->mask) | |
1227 | { | |
578098f3 | 1228 | bool free_mask = !mask; |
4ef0d4d0 KS |
1229 | #ifdef HAVE_NTGUI |
1230 | HGDIOBJ prev; | |
1231 | #endif /* HAVE_NTGUI */ | |
1232 | ||
1233 | if (free_mask) | |
1234 | { | |
1235 | #ifndef HAVE_NTGUI | |
1236 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1237 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1238 | #else | |
1239 | HDC frame_dc = get_frame_dc (f); | |
1240 | mask = CreateCompatibleDC (frame_dc); | |
1241 | release_frame_dc (f, frame_dc); | |
1242 | prev = SelectObject (mask, img->mask); | |
1243 | #endif /* HAVE_NTGUI */ | |
1244 | } | |
1245 | ||
1246 | img->background_transparent | |
6ac3c7bb | 1247 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1248 | |
1249 | if (free_mask) | |
1250 | Destroy_Image (mask, prev); | |
1251 | } | |
1252 | else | |
1253 | img->background_transparent = 0; | |
1254 | ||
1255 | img->background_transparent_valid = 1; | |
1256 | } | |
1257 | ||
1258 | return img->background_transparent; | |
1259 | } | |
1260 | ||
1261 | \f | |
1262 | /*********************************************************************** | |
1263 | Helper functions for X image types | |
1264 | ***********************************************************************/ | |
1265 | ||
578098f3 PE |
1266 | /* Clear X resources of image IMG on frame F. PIXMAP_P means free the |
1267 | pixmap if any. MASK_P means clear the mask pixmap if any. | |
1268 | COLORS_P means free colors allocated for the image, if any. */ | |
4ef0d4d0 KS |
1269 | |
1270 | static void | |
578098f3 PE |
1271 | x_clear_image_1 (struct frame *f, struct image *img, bool pixmap_p, |
1272 | bool mask_p, bool colors_p) | |
4ef0d4d0 KS |
1273 | { |
1274 | if (pixmap_p && img->pixmap) | |
1275 | { | |
1276 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1277 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1278 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1279 | img->background_valid = 0; |
1280 | } | |
1281 | ||
1282 | if (mask_p && img->mask) | |
1283 | { | |
1284 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1285 | img->mask = NO_PIXMAP; | |
1286 | img->background_transparent_valid = 0; | |
1287 | } | |
1288 | ||
1289 | if (colors_p && img->ncolors) | |
1290 | { | |
4ef0d4d0 KS |
1291 | /* W32_TODO: color table support. */ |
1292 | #ifdef HAVE_X_WINDOWS | |
1293 | x_free_colors (f, img->colors, img->ncolors); | |
1294 | #endif /* HAVE_X_WINDOWS */ | |
1295 | xfree (img->colors); | |
1296 | img->colors = NULL; | |
1297 | img->ncolors = 0; | |
1298 | } | |
c7fea325 | 1299 | |
4ef0d4d0 KS |
1300 | } |
1301 | ||
1302 | /* Free X resources of image IMG which is used on frame F. */ | |
1303 | ||
1304 | static void | |
d3da34e0 | 1305 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1306 | { |
4d7e6e51 | 1307 | block_input (); |
4ef0d4d0 | 1308 | x_clear_image_1 (f, img, 1, 1, 1); |
4d7e6e51 | 1309 | unblock_input (); |
4ef0d4d0 KS |
1310 | } |
1311 | ||
1312 | ||
1313 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1314 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1315 | IMG->colors, so that it can be freed again. Value is the pixel | |
1316 | color. */ | |
1317 | ||
1318 | static unsigned long | |
d3da34e0 JB |
1319 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1320 | unsigned long dflt) | |
4ef0d4d0 KS |
1321 | { |
1322 | XColor color; | |
1323 | unsigned long result; | |
1324 | ||
a54e2c05 | 1325 | eassert (STRINGP (color_name)); |
4ef0d4d0 | 1326 | |
3f791afe PE |
1327 | if (x_defined_color (f, SSDATA (color_name), &color, 1) |
1328 | && img->ncolors < min (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *img->colors, | |
1329 | INT_MAX)) | |
4ef0d4d0 KS |
1330 | { |
1331 | /* This isn't called frequently so we get away with simply | |
1332 | reallocating the color vector to the needed size, here. */ | |
ddff3151 | 1333 | ptrdiff_t ncolors = img->ncolors + 1; |
38182d90 | 1334 | img->colors = xrealloc (img->colors, ncolors * sizeof *img->colors); |
ddff3151 PE |
1335 | img->colors[ncolors - 1] = color.pixel; |
1336 | img->ncolors = ncolors; | |
4ef0d4d0 KS |
1337 | result = color.pixel; |
1338 | } | |
1339 | else | |
1340 | result = dflt; | |
1341 | ||
1342 | return result; | |
1343 | } | |
1344 | ||
1345 | ||
1346 | \f | |
1347 | /*********************************************************************** | |
1348 | Image Cache | |
1349 | ***********************************************************************/ | |
1350 | ||
f57e2426 | 1351 | static void cache_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
1352 | |
1353 | /* Return a new, initialized image cache that is allocated from the | |
1354 | heap. Call free_image_cache to free an image cache. */ | |
1355 | ||
1356 | struct image_cache * | |
d3da34e0 | 1357 | make_image_cache (void) |
4ef0d4d0 | 1358 | { |
23f86fce | 1359 | struct image_cache *c = xzalloc (sizeof *c); |
4ef0d4d0 KS |
1360 | int size; |
1361 | ||
ddff3151 | 1362 | size = 50; |
23f86fce | 1363 | c->images = xmalloc (size * sizeof *c->images); |
ddff3151 | 1364 | c->size = size; |
4ef0d4d0 | 1365 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
23f86fce | 1366 | c->buckets = xzalloc (size); |
4ef0d4d0 KS |
1367 | return c; |
1368 | } | |
1369 | ||
1370 | ||
d3c35d17 CY |
1371 | /* Find an image matching SPEC in the cache, and return it. If no |
1372 | image is found, return NULL. */ | |
1373 | static struct image * | |
0de4bb68 | 1374 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1375 | { |
91be6b66 | 1376 | struct image *img; |
354884c4 | 1377 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1378 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1379 | ||
8198352b CY |
1380 | if (!c) return NULL; |
1381 | ||
d3c35d17 CY |
1382 | /* If the image spec does not specify a background color, the cached |
1383 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1384 | The foreground color must also match, for the sake of monochrome |
1385 | images. | |
1386 | ||
1387 | In fact, we could ignore the foreground color matching condition | |
1388 | for color images, or if the image spec specifies :foreground; | |
1389 | similarly we could ignore the background color matching condition | |
1390 | for formats that don't use transparency (such as jpeg), or if the | |
1391 | image spec specifies :background. However, the extra memory | |
1392 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1393 | |
483e7ae0 | 1394 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1395 | if (img->hash == hash |
1396 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1397 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1398 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1399 | break; |
1400 | return img; | |
1401 | } | |
1402 | ||
1403 | ||
1404 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1405 | ||
1406 | static void | |
d3da34e0 | 1407 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1408 | { |
1409 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1410 | if (img) | |
be3faa80 CY |
1411 | { |
1412 | free_image (f, img); | |
1413 | /* As display glyphs may still be referring to the image ID, we | |
1414 | must garbage the frame (Bug#6426). */ | |
1415 | SET_FRAME_GARBAGED (f); | |
1416 | } | |
483e7ae0 CY |
1417 | } |
1418 | ||
1419 | ||
4ef0d4d0 KS |
1420 | /* Free image cache of frame F. Be aware that X frames share images |
1421 | caches. */ | |
1422 | ||
1423 | void | |
d3da34e0 | 1424 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1425 | { |
354884c4 | 1426 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1427 | if (c) |
1428 | { | |
13464394 | 1429 | ptrdiff_t i; |
4ef0d4d0 KS |
1430 | |
1431 | /* Cache should not be referenced by any frame when freed. */ | |
a54e2c05 | 1432 | eassert (c->refcount == 0); |
4ef0d4d0 KS |
1433 | |
1434 | for (i = 0; i < c->used; ++i) | |
1435 | free_image (f, c->images[i]); | |
1436 | xfree (c->images); | |
1437 | xfree (c->buckets); | |
1438 | xfree (c); | |
354884c4 | 1439 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1440 | } |
1441 | } | |
1442 | ||
1443 | ||
a2bc5bdd SM |
1444 | /* Clear image cache of frame F. FILTER=t means free all images. |
1445 | FILTER=nil means clear only images that haven't been | |
1446 | displayed for some time. | |
1447 | Else, only free the images which have FILTER in their `dependencies'. | |
1448 | Should be called from time to time to reduce the number of loaded images. | |
1449 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1450 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1451 | |
ce0ad53d | 1452 | static void |
a2bc5bdd | 1453 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1454 | { |
354884c4 | 1455 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1456 | |
98fe5161 | 1457 | if (c) |
4ef0d4d0 | 1458 | { |
13464394 | 1459 | ptrdiff_t i, nfreed = 0; |
4ef0d4d0 KS |
1460 | |
1461 | /* Block input so that we won't be interrupted by a SIGIO | |
1462 | while being in an inconsistent state. */ | |
4d7e6e51 | 1463 | block_input (); |
4ef0d4d0 | 1464 | |
98fe5161 CY |
1465 | if (!NILP (filter)) |
1466 | { | |
1467 | /* Filter image cache. */ | |
1468 | for (i = 0; i < c->used; ++i) | |
1469 | { | |
1470 | struct image *img = c->images[i]; | |
1471 | if (img && (EQ (Qt, filter) | |
1472 | || !NILP (Fmember (filter, img->dependencies)))) | |
1473 | { | |
1474 | free_image (f, img); | |
1475 | ++nfreed; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1480 | { |
98fe5161 | 1481 | /* Free cache based on timestamp. */ |
d35af63c PE |
1482 | EMACS_TIME old, t; |
1483 | double delay; | |
13464394 | 1484 | ptrdiff_t nimages = 0; |
98fe5161 CY |
1485 | |
1486 | for (i = 0; i < c->used; ++i) | |
1487 | if (c->images[i]) | |
1488 | nimages++; | |
1489 | ||
1490 | /* If the number of cached images has grown unusually large, | |
1491 | decrease the cache eviction delay (Bug#6230). */ | |
13464394 | 1492 | delay = XINT (Vimage_cache_eviction_delay); |
98fe5161 | 1493 | if (nimages > 40) |
13464394 PE |
1494 | delay = 1600 * delay / nimages / nimages; |
1495 | delay = max (delay, 1); | |
98fe5161 | 1496 | |
e9a9ae03 PE |
1497 | t = current_emacs_time (); |
1498 | old = sub_emacs_time (t, EMACS_TIME_FROM_DOUBLE (delay)); | |
98fe5161 CY |
1499 | |
1500 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1501 | { |
98fe5161 | 1502 | struct image *img = c->images[i]; |
d35af63c | 1503 | if (img && EMACS_TIME_LT (img->timestamp, old)) |
98fe5161 CY |
1504 | { |
1505 | free_image (f, img); | |
1506 | ++nfreed; | |
1507 | } | |
4ef0d4d0 KS |
1508 | } |
1509 | } | |
1510 | ||
1511 | /* We may be clearing the image cache because, for example, | |
1512 | Emacs was iconified for a longer period of time. In that | |
1513 | case, current matrices may still contain references to | |
1514 | images freed above. So, clear these matrices. */ | |
1515 | if (nfreed) | |
1516 | { | |
1517 | Lisp_Object tail, frame; | |
1518 | ||
1519 | FOR_EACH_FRAME (tail, frame) | |
1520 | { | |
6ae141d6 PE |
1521 | struct frame *fr = XFRAME (frame); |
1522 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1523 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1524 | } |
1525 | ||
1526 | ++windows_or_buffers_changed; | |
1527 | } | |
1528 | ||
4d7e6e51 | 1529 | unblock_input (); |
4ef0d4d0 KS |
1530 | } |
1531 | } | |
1532 | ||
354884c4 | 1533 | void |
a2bc5bdd | 1534 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1535 | { |
1536 | /* FIXME: We want to do | |
1537 | * struct terminal *t; | |
1538 | * for (t = terminal_list; t; t = t->next_terminal) | |
1539 | * clear_image_cache (t, filter); */ | |
1540 | Lisp_Object tail, frame; | |
1541 | FOR_EACH_FRAME (tail, frame) | |
1542 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1543 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1544 | } |
4ef0d4d0 KS |
1545 | |
1546 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1547 | 0, 1, 0, | |
a2bc5bdd SM |
1548 | doc: /* Clear the image cache. |
1549 | FILTER nil or a frame means clear all images in the selected frame. | |
1550 | FILTER t means clear the image caches of all frames. | |
1551 | Anything else, means only clear those images which refer to FILTER, | |
1552 | which is then usually a filename. */) | |
5842a27b | 1553 | (Lisp_Object filter) |
4ef0d4d0 | 1554 | { |
a2bc5bdd SM |
1555 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1556 | clear_image_caches (filter); | |
4ef0d4d0 | 1557 | else |
a2bc5bdd | 1558 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1559 | |
1560 | return Qnil; | |
1561 | } | |
1562 | ||
1563 | ||
110683ad | 1564 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1565 | 1, 2, 0, |
110683ad CY |
1566 | doc: /* Fush the image with specification SPEC on frame FRAME. |
1567 | This removes the image from the Emacs image cache. If SPEC specifies | |
1568 | an image file, the next redisplay of this image will read from the | |
1569 | current contents of that file. | |
1570 | ||
483e7ae0 CY |
1571 | FRAME nil or omitted means use the selected frame. |
1572 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1573 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1574 | { |
1575 | if (!valid_image_p (spec)) | |
1576 | error ("Invalid image specification"); | |
1577 | ||
1578 | if (EQ (frame, Qt)) | |
1579 | { | |
1580 | Lisp_Object tail; | |
1581 | FOR_EACH_FRAME (tail, frame) | |
1582 | { | |
1583 | struct frame *f = XFRAME (frame); | |
1584 | if (FRAME_WINDOW_P (f)) | |
1585 | uncache_image (f, spec); | |
1586 | } | |
1587 | } | |
1588 | else | |
1589 | uncache_image (check_x_frame (frame), spec); | |
1590 | ||
1591 | return Qnil; | |
1592 | } | |
1593 | ||
1594 | ||
4ef0d4d0 KS |
1595 | /* Compute masks and transform image IMG on frame F, as specified |
1596 | by the image's specification, */ | |
1597 | ||
1598 | static void | |
d3da34e0 | 1599 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1600 | { |
1601 | /* Manipulation of the image's mask. */ | |
1602 | if (img->pixmap) | |
1603 | { | |
1604 | Lisp_Object conversion, spec; | |
1605 | Lisp_Object mask; | |
1606 | ||
1607 | spec = img->spec; | |
1608 | ||
1609 | /* `:heuristic-mask t' | |
1610 | `:mask heuristic' | |
1611 | means build a mask heuristically. | |
1612 | `:heuristic-mask (R G B)' | |
1613 | `:mask (heuristic (R G B))' | |
1614 | means build a mask from color (R G B) in the | |
1615 | image. | |
1616 | `:mask nil' | |
1617 | means remove a mask, if any. */ | |
1618 | ||
1619 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1620 | if (!NILP (mask)) | |
1621 | x_build_heuristic_mask (f, img, mask); | |
1622 | else | |
1623 | { | |
578098f3 | 1624 | bool found_p; |
4ef0d4d0 KS |
1625 | |
1626 | mask = image_spec_value (spec, QCmask, &found_p); | |
1627 | ||
1628 | if (EQ (mask, Qheuristic)) | |
1629 | x_build_heuristic_mask (f, img, Qt); | |
1630 | else if (CONSP (mask) | |
1631 | && EQ (XCAR (mask), Qheuristic)) | |
1632 | { | |
1633 | if (CONSP (XCDR (mask))) | |
1634 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1635 | else | |
1636 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1637 | } | |
1638 | else if (NILP (mask) && found_p && img->mask) | |
1639 | { | |
1640 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1641 | img->mask = NO_PIXMAP; | |
1642 | } | |
1643 | } | |
1644 | ||
1645 | ||
1646 | /* Should we apply an image transformation algorithm? */ | |
1647 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1648 | if (EQ (conversion, Qdisabled)) | |
1649 | x_disable_image (f, img); | |
1650 | else if (EQ (conversion, Qlaplace)) | |
1651 | x_laplace (f, img); | |
1652 | else if (EQ (conversion, Qemboss)) | |
1653 | x_emboss (f, img); | |
1654 | else if (CONSP (conversion) | |
1655 | && EQ (XCAR (conversion), Qedge_detection)) | |
1656 | { | |
1657 | Lisp_Object tem; | |
1658 | tem = XCDR (conversion); | |
1659 | if (CONSP (tem)) | |
1660 | x_edge_detection (f, img, | |
1661 | Fplist_get (tem, QCmatrix), | |
1662 | Fplist_get (tem, QCcolor_adjustment)); | |
1663 | } | |
1664 | } | |
1665 | } | |
1666 | ||
1667 | ||
1668 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1669 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1670 | ||
13464394 | 1671 | ptrdiff_t |
d3da34e0 | 1672 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1673 | { |
4ef0d4d0 | 1674 | struct image *img; |
0de4bb68 | 1675 | EMACS_UINT hash; |
4ef0d4d0 KS |
1676 | |
1677 | /* F must be a window-system frame, and SPEC must be a valid image | |
1678 | specification. */ | |
a54e2c05 DA |
1679 | eassert (FRAME_WINDOW_P (f)); |
1680 | eassert (valid_image_p (spec)); | |
4ef0d4d0 | 1681 | |
4ef0d4d0 KS |
1682 | /* Look up SPEC in the hash table of the image cache. */ |
1683 | hash = sxhash (spec, 0); | |
d3c35d17 | 1684 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1685 | if (img && img->load_failed_p) |
1686 | { | |
1687 | free_image (f, img); | |
1688 | img = NULL; | |
1689 | } | |
1690 | ||
4ef0d4d0 KS |
1691 | /* If not found, create a new image and cache it. */ |
1692 | if (img == NULL) | |
1693 | { | |
4d7e6e51 | 1694 | block_input (); |
4ef0d4d0 KS |
1695 | img = make_image (spec, hash); |
1696 | cache_image (f, img); | |
578098f3 | 1697 | img->load_failed_p = ! img->type->load (f, img); |
c5b8e0ea YM |
1698 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1699 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1700 | |
1701 | /* If we can't load the image, and we don't have a width and | |
1702 | height, use some arbitrary width and height so that we can | |
1703 | draw a rectangle for it. */ | |
1704 | if (img->load_failed_p) | |
1705 | { | |
1706 | Lisp_Object value; | |
1707 | ||
1708 | value = image_spec_value (spec, QCwidth, NULL); | |
1709 | img->width = (INTEGERP (value) | |
1710 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1711 | value = image_spec_value (spec, QCheight, NULL); | |
1712 | img->height = (INTEGERP (value) | |
1713 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1714 | } | |
1715 | else | |
1716 | { | |
1717 | /* Handle image type independent image attributes | |
1718 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1719 | `:background COLOR'. */ | |
1720 | Lisp_Object ascent, margin, relief, bg; | |
d311d28c | 1721 | int relief_bound; |
4ef0d4d0 KS |
1722 | |
1723 | ascent = image_spec_value (spec, QCascent, NULL); | |
1724 | if (INTEGERP (ascent)) | |
1725 | img->ascent = XFASTINT (ascent); | |
1726 | else if (EQ (ascent, Qcenter)) | |
1727 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1728 | ||
1729 | margin = image_spec_value (spec, QCmargin, NULL); | |
13464394 | 1730 | if (INTEGERP (margin)) |
4ef0d4d0 | 1731 | img->vmargin = img->hmargin = XFASTINT (margin); |
13464394 | 1732 | else if (CONSP (margin)) |
4ef0d4d0 | 1733 | { |
13464394 PE |
1734 | img->hmargin = XFASTINT (XCAR (margin)); |
1735 | img->vmargin = XFASTINT (XCDR (margin)); | |
4ef0d4d0 KS |
1736 | } |
1737 | ||
1738 | relief = image_spec_value (spec, QCrelief, NULL); | |
d311d28c PE |
1739 | relief_bound = INT_MAX - max (img->hmargin, img->vmargin); |
1740 | if (RANGED_INTEGERP (- relief_bound, relief, relief_bound)) | |
4ef0d4d0 KS |
1741 | { |
1742 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1743 | img->hmargin += eabs (img->relief); |
1744 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1745 | } |
1746 | ||
1747 | if (! img->background_valid) | |
1748 | { | |
1749 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1750 | if (!NILP (bg)) | |
1751 | { | |
1752 | img->background | |
1753 | = x_alloc_image_color (f, img, bg, | |
1754 | FRAME_BACKGROUND_PIXEL (f)); | |
1755 | img->background_valid = 1; | |
1756 | } | |
1757 | } | |
1758 | ||
1759 | /* Do image transformations and compute masks, unless we | |
1760 | don't have the image yet. */ | |
1761 | if (!EQ (*img->type->type, Qpostscript)) | |
1762 | postprocess_image (f, img); | |
1763 | } | |
1764 | ||
4d7e6e51 | 1765 | unblock_input (); |
4ef0d4d0 KS |
1766 | } |
1767 | ||
1768 | /* We're using IMG, so set its timestamp to `now'. */ | |
e9a9ae03 | 1769 | img->timestamp = current_emacs_time (); |
4ef0d4d0 | 1770 | |
4ef0d4d0 KS |
1771 | /* Value is the image id. */ |
1772 | return img->id; | |
1773 | } | |
1774 | ||
1775 | ||
1776 | /* Cache image IMG in the image cache of frame F. */ | |
1777 | ||
1778 | static void | |
d3da34e0 | 1779 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1780 | { |
354884c4 | 1781 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 | 1782 | ptrdiff_t i; |
4ef0d4d0 KS |
1783 | |
1784 | /* Find a free slot in c->images. */ | |
1785 | for (i = 0; i < c->used; ++i) | |
1786 | if (c->images[i] == NULL) | |
1787 | break; | |
1788 | ||
1789 | /* If no free slot found, maybe enlarge c->images. */ | |
1790 | if (i == c->used && c->used == c->size) | |
a69fbedb | 1791 | c->images = xpalloc (c->images, &c->size, 1, -1, sizeof *c->images); |
4ef0d4d0 KS |
1792 | |
1793 | /* Add IMG to c->images, and assign IMG an id. */ | |
1794 | c->images[i] = img; | |
1795 | img->id = i; | |
1796 | if (i == c->used) | |
1797 | ++c->used; | |
1798 | ||
1799 | /* Add IMG to the cache's hash table. */ | |
1800 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1801 | img->next = c->buckets[i]; | |
1802 | if (img->next) | |
1803 | img->next->prev = img; | |
1804 | img->prev = NULL; | |
1805 | c->buckets[i] = img; | |
1806 | } | |
1807 | ||
1808 | ||
1809 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1810 | Lisp Objects in the image cache. */ | |
1811 | ||
354884c4 SM |
1812 | /* Mark Lisp objects in image IMG. */ |
1813 | ||
1814 | static void | |
d3da34e0 | 1815 | mark_image (struct image *img) |
354884c4 SM |
1816 | { |
1817 | mark_object (img->spec); | |
a2bc5bdd | 1818 | mark_object (img->dependencies); |
354884c4 | 1819 | |
b50691aa CY |
1820 | if (!NILP (img->lisp_data)) |
1821 | mark_object (img->lisp_data); | |
354884c4 SM |
1822 | } |
1823 | ||
1824 | ||
4ef0d4d0 | 1825 | void |
354884c4 | 1826 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1827 | { |
354884c4 | 1828 | if (c) |
4ef0d4d0 | 1829 | { |
13464394 | 1830 | ptrdiff_t i; |
354884c4 SM |
1831 | for (i = 0; i < c->used; ++i) |
1832 | if (c->images[i]) | |
1833 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1834 | } |
1835 | } | |
1836 | ||
1837 | ||
1838 | \f | |
1839 | /*********************************************************************** | |
9e2a2647 | 1840 | X / NS / W32 support code |
4ef0d4d0 KS |
1841 | ***********************************************************************/ |
1842 | ||
0fda9b75 | 1843 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
1844 | |
1845 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1846 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1847 | |
1848 | /* Macro for loading those image functions from the library. */ | |
1849 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1850 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1851 | if (!fn_##func) return 0; \ | |
1852 | } | |
1853 | ||
0fda9b75 | 1854 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 1855 | |
578098f3 | 1856 | /* Return true if XIMG's size WIDTH x HEIGHT doesn't break the |
476371c4 | 1857 | windowing system. |
ca4aa935 PE |
1858 | WIDTH and HEIGHT must both be positive. |
1859 | If XIMG is null, assume it is a bitmap. */ | |
578098f3 | 1860 | static bool |
ca4aa935 PE |
1861 | x_check_image_size (XImagePtr ximg, int width, int height) |
1862 | { | |
476371c4 | 1863 | #ifdef HAVE_X_WINDOWS |
ca4aa935 PE |
1864 | /* Respect Xlib's limits: it cannot deal with images that have more |
1865 | than INT_MAX (and/or UINT_MAX) bytes. And respect Emacs's limits | |
476371c4 | 1866 | of PTRDIFF_MAX (and/or SIZE_MAX) bytes for any object. */ |
ca4aa935 PE |
1867 | enum |
1868 | { | |
1869 | XLIB_BYTES_MAX = min (INT_MAX, UINT_MAX), | |
1870 | X_IMAGE_BYTES_MAX = min (XLIB_BYTES_MAX, min (PTRDIFF_MAX, SIZE_MAX)) | |
1871 | }; | |
1872 | ||
1873 | int bitmap_pad, depth, bytes_per_line; | |
1874 | if (ximg) | |
1875 | { | |
1876 | bitmap_pad = ximg->bitmap_pad; | |
1877 | depth = ximg->depth; | |
1878 | bytes_per_line = ximg->bytes_per_line; | |
1879 | } | |
1880 | else | |
1881 | { | |
1882 | bitmap_pad = 8; | |
1883 | depth = 1; | |
1884 | bytes_per_line = (width >> 3) + ((width & 7) != 0); | |
1885 | } | |
1886 | return (width <= (INT_MAX - (bitmap_pad - 1)) / depth | |
1887 | && height <= X_IMAGE_BYTES_MAX / bytes_per_line); | |
476371c4 PE |
1888 | #else |
1889 | /* FIXME: Implement this check for the HAVE_NS and HAVE_NTGUI cases. | |
1890 | For now, assume that every image size is allowed on these systems. */ | |
1891 | return 1; | |
1892 | #endif | |
ca4aa935 | 1893 | } |
4ef0d4d0 KS |
1894 | |
1895 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1896 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1897 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1898 | via xmalloc. Print error messages via image_error if an error | |
578098f3 | 1899 | occurs. Value is true if successful. |
4ef0d4d0 KS |
1900 | |
1901 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1902 | should indicate the bit depth of the image. */ | |
1903 | ||
578098f3 | 1904 | static bool |
d3da34e0 JB |
1905 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1906 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1907 | { |
1908 | #ifdef HAVE_X_WINDOWS | |
1909 | Display *display = FRAME_X_DISPLAY (f); | |
1910 | Window window = FRAME_X_WINDOW (f); | |
1911 | Screen *screen = FRAME_X_SCREEN (f); | |
1912 | ||
4d7e6e51 | 1913 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
1914 | |
1915 | if (depth <= 0) | |
1916 | depth = DefaultDepthOfScreen (screen); | |
1917 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1918 | depth, ZPixmap, 0, NULL, width, height, | |
1919 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1920 | if (*ximg == NULL) | |
1921 | { | |
1922 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1923 | return 0; | |
1924 | } | |
1925 | ||
ca4aa935 PE |
1926 | if (! x_check_image_size (*ximg, width, height)) |
1927 | { | |
1928 | x_destroy_x_image (*ximg); | |
1929 | *ximg = NULL; | |
1930 | image_error ("Image too large (%dx%d)", | |
1931 | make_number (width), make_number (height)); | |
1932 | return 0; | |
1933 | } | |
1934 | ||
4ef0d4d0 | 1935 | /* Allocate image raster. */ |
23f86fce | 1936 | (*ximg)->data = xmalloc ((*ximg)->bytes_per_line * height); |
4ef0d4d0 KS |
1937 | |
1938 | /* Allocate a pixmap of the same size. */ | |
1939 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1940 | if (*pixmap == NO_PIXMAP) | |
1941 | { | |
1942 | x_destroy_x_image (*ximg); | |
1943 | *ximg = NULL; | |
1944 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1948 | return 1; | |
1949 | #endif /* HAVE_X_WINDOWS */ | |
1950 | ||
1951 | #ifdef HAVE_NTGUI | |
1952 | ||
1953 | BITMAPINFOHEADER *header; | |
1954 | HDC hdc; | |
1955 | int scanline_width_bits; | |
1956 | int remainder; | |
1957 | int palette_colors = 0; | |
1958 | ||
1959 | if (depth == 0) | |
1960 | depth = 24; | |
1961 | ||
1962 | if (depth != 1 && depth != 4 && depth != 8 | |
1963 | && depth != 16 && depth != 24 && depth != 32) | |
1964 | { | |
1965 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
1966 | return 0; | |
1967 | } | |
1968 | ||
1969 | scanline_width_bits = width * depth; | |
1970 | remainder = scanline_width_bits % 32; | |
1971 | ||
1972 | if (remainder) | |
1973 | scanline_width_bits += 32 - remainder; | |
1974 | ||
1975 | /* Bitmaps with a depth less than 16 need a palette. */ | |
1976 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
1977 | if (depth < 16) | |
657d08d3 | 1978 | palette_colors = 1 << (depth - 1); |
4ef0d4d0 KS |
1979 | |
1980 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
4ef0d4d0 | 1981 | |
72af86bd AS |
1982 | header = &(*ximg)->info.bmiHeader; |
1983 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
1984 | header->biSize = sizeof (*header); |
1985 | header->biWidth = width; | |
1986 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
1987 | header->biPlanes = 1; | |
1988 | header->biBitCount = depth; | |
1989 | header->biCompression = BI_RGB; | |
1990 | header->biClrUsed = palette_colors; | |
1991 | ||
1992 | /* TODO: fill in palette. */ | |
1993 | if (depth == 1) | |
1994 | { | |
1995 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
1996 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
1997 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
1998 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
1999 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2000 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2001 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2002 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2003 | } | |
2004 | ||
2005 | hdc = get_frame_dc (f); | |
2006 | ||
2007 | /* Create a DIBSection and raster array for the bitmap, | |
2008 | and store its handle in *pixmap. */ | |
2009 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2010 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2011 | /* casting avoids a GCC warning */ |
2012 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2013 | |
2014 | /* Realize display palette and garbage all frames. */ | |
2015 | release_frame_dc (f, hdc); | |
2016 | ||
2017 | if (*pixmap == NULL) | |
2018 | { | |
5fc9fdeb | 2019 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2020 | Lisp_Object errcode; |
2021 | /* All system errors are < 10000, so the following is safe. */ | |
13464394 | 2022 | XSETINT (errcode, err); |
4ef0d4d0 KS |
2023 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); |
2024 | x_destroy_x_image (*ximg); | |
2025 | return 0; | |
2026 | } | |
2027 | ||
2028 | return 1; | |
2029 | ||
2030 | #endif /* HAVE_NTGUI */ | |
2031 | ||
edfda783 | 2032 | #ifdef HAVE_NS |
ed3751c8 | 2033 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2034 | if (*pixmap == 0) |
2035 | { | |
2036 | *ximg = NULL; | |
2037 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2038 | return 0; | |
2039 | } | |
2040 | *ximg = *pixmap; | |
2041 | return 1; | |
2042 | #endif | |
4ef0d4d0 KS |
2043 | } |
2044 | ||
2045 | ||
2046 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2047 | ||
2048 | static void | |
d3da34e0 | 2049 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 | 2050 | { |
4d7e6e51 | 2051 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2052 | if (ximg) |
2053 | { | |
2054 | #ifdef HAVE_X_WINDOWS | |
2055 | xfree (ximg->data); | |
2056 | ximg->data = NULL; | |
2057 | XDestroyImage (ximg); | |
2058 | #endif /* HAVE_X_WINDOWS */ | |
2059 | #ifdef HAVE_NTGUI | |
2060 | /* Data will be freed by DestroyObject. */ | |
2061 | ximg->data = NULL; | |
2062 | xfree (ximg); | |
2063 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2064 | #ifdef HAVE_NS |
ed3751c8 | 2065 | ns_release_object (ximg); |
edfda783 | 2066 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2067 | } |
2068 | } | |
2069 | ||
2070 | ||
2071 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2072 | are width and height of both the image and pixmap. */ | |
2073 | ||
2074 | static void | |
d3da34e0 | 2075 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2076 | { |
2077 | #ifdef HAVE_X_WINDOWS | |
2078 | GC gc; | |
2079 | ||
4d7e6e51 | 2080 | eassert (input_blocked_p ()); |
4ef0d4d0 KS |
2081 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); |
2082 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2083 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2084 | #endif /* HAVE_X_WINDOWS */ | |
2085 | ||
2086 | #ifdef HAVE_NTGUI | |
2087 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2088 | HDC hdc = get_frame_dc (f); | |
2089 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2090 | release_frame_dc (f, hdc); | |
2091 | #endif | |
2092 | #endif /* HAVE_NTGUI */ | |
2093 | ||
edfda783 | 2094 | #ifdef HAVE_NS |
a54e2c05 | 2095 | eassert (ximg == pixmap); |
ed3751c8 | 2096 | ns_retain_object (ximg); |
edfda783 | 2097 | #endif |
4ef0d4d0 KS |
2098 | } |
2099 | ||
2100 | \f | |
2101 | /*********************************************************************** | |
2102 | File Handling | |
2103 | ***********************************************************************/ | |
2104 | ||
6678dc11 | 2105 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2106 | x-bitmap-file-path. Value is the encoded full name of the file |
2107 | found, or nil if not found. */ | |
4ef0d4d0 | 2108 | |
c640aa9b | 2109 | Lisp_Object |
d3da34e0 | 2110 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2111 | { |
2112 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2113 | int fd; |
2114 | ||
6678dc11 GM |
2115 | /* TODO I think this should use something like image-load-path |
2116 | instead. Unfortunately, that can contain non-string elements. */ | |
2117 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2118 | Vdata_directory), | |
2119 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2120 | |
050b82f6 | 2121 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2122 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2123 | ||
2124 | if (fd == -1) | |
2125 | file_found = Qnil; | |
2126 | else | |
022af124 KH |
2127 | { |
2128 | file_found = ENCODE_FILE (file_found); | |
2129 | close (fd); | |
2130 | } | |
4ef0d4d0 | 2131 | |
4ef0d4d0 KS |
2132 | return file_found; |
2133 | } | |
2134 | ||
2135 | ||
2136 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2137 | with xmalloc holding FILE's contents. Value is null if an error | |
2138 | occurred. *SIZE is set to the size of the file. */ | |
2139 | ||
2140 | static unsigned char * | |
dd52fcea | 2141 | slurp_file (char *file, ptrdiff_t *size) |
4ef0d4d0 KS |
2142 | { |
2143 | FILE *fp = NULL; | |
2144 | unsigned char *buf = NULL; | |
2145 | struct stat st; | |
2146 | ||
2147 | if (stat (file, &st) == 0 | |
2148 | && (fp = fopen (file, "rb")) != NULL | |
dd52fcea | 2149 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
23f86fce | 2150 | && (buf = xmalloc (st.st_size), |
4ef0d4d0 KS |
2151 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2152 | { | |
2153 | *size = st.st_size; | |
2154 | fclose (fp); | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | if (fp) | |
2159 | fclose (fp); | |
2160 | if (buf) | |
2161 | { | |
2162 | xfree (buf); | |
2163 | buf = NULL; | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | return buf; | |
2168 | } | |
2169 | ||
2170 | ||
2171 | \f | |
4ef0d4d0 KS |
2172 | /*********************************************************************** |
2173 | XBM images | |
2174 | ***********************************************************************/ | |
2175 | ||
578098f3 PE |
2176 | static bool xbm_load (struct frame *f, struct image *img); |
2177 | static bool xbm_image_p (Lisp_Object object); | |
2178 | static bool xbm_file_p (Lisp_Object); | |
4ef0d4d0 KS |
2179 | |
2180 | ||
2181 | /* Indices of image specification fields in xbm_format, below. */ | |
2182 | ||
2183 | enum xbm_keyword_index | |
2184 | { | |
2185 | XBM_TYPE, | |
2186 | XBM_FILE, | |
2187 | XBM_WIDTH, | |
2188 | XBM_HEIGHT, | |
2189 | XBM_DATA, | |
2190 | XBM_FOREGROUND, | |
2191 | XBM_BACKGROUND, | |
2192 | XBM_ASCENT, | |
2193 | XBM_MARGIN, | |
2194 | XBM_RELIEF, | |
2195 | XBM_ALGORITHM, | |
2196 | XBM_HEURISTIC_MASK, | |
2197 | XBM_MASK, | |
2198 | XBM_LAST | |
2199 | }; | |
2200 | ||
2201 | /* Vector of image_keyword structures describing the format | |
2202 | of valid XBM image specifications. */ | |
2203 | ||
91433552 | 2204 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2205 | { |
2206 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2207 | {":file", IMAGE_STRING_VALUE, 0}, | |
2208 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2209 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2210 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2211 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2212 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2213 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 2214 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
2215 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
2216 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2217 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2218 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2219 | }; | |
2220 | ||
2221 | /* Structure describing the image type XBM. */ | |
2222 | ||
2223 | static struct image_type xbm_type = | |
2224 | { | |
2225 | &Qxbm, | |
2226 | xbm_image_p, | |
2227 | xbm_load, | |
2228 | x_clear_image, | |
bb4d86b4 | 2229 | NULL, |
4ef0d4d0 KS |
2230 | NULL |
2231 | }; | |
2232 | ||
2233 | /* Tokens returned from xbm_scan. */ | |
2234 | ||
2235 | enum xbm_token | |
2236 | { | |
2237 | XBM_TK_IDENT = 256, | |
2238 | XBM_TK_NUMBER | |
2239 | }; | |
2240 | ||
2241 | ||
578098f3 | 2242 | /* Return true if OBJECT is a valid XBM-type image specification. |
4ef0d4d0 KS |
2243 | A valid specification is a list starting with the symbol `image' |
2244 | The rest of the list is a property list which must contain an | |
578098f3 | 2245 | entry `:type xbm'. |
4ef0d4d0 KS |
2246 | |
2247 | If the specification specifies a file to load, it must contain | |
2248 | an entry `:file FILENAME' where FILENAME is a string. | |
2249 | ||
2250 | If the specification is for a bitmap loaded from memory it must | |
2251 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2252 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2253 | ||
2254 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2255 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2256 | ||
2257 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2258 | ||
2259 | 3. a vector of strings or bool-vectors, one for each line of the | |
2260 | bitmap. | |
2261 | ||
bbe6f2aa | 2262 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2263 | may not be specified in this case because they are defined in the |
2264 | XBM file. | |
2265 | ||
2266 | Both the file and data forms may contain the additional entries | |
2267 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2268 | foreground and background of the frame on which the image is | |
2269 | displayed is used. */ | |
2270 | ||
578098f3 | 2271 | static bool |
d3da34e0 | 2272 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2273 | { |
2274 | struct image_keyword kw[XBM_LAST]; | |
2275 | ||
72af86bd | 2276 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2277 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2278 | return 0; | |
2279 | ||
a54e2c05 | 2280 | eassert (EQ (kw[XBM_TYPE].value, Qxbm)); |
4ef0d4d0 KS |
2281 | |
2282 | if (kw[XBM_FILE].count) | |
2283 | { | |
2284 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2285 | return 0; | |
2286 | } | |
2287 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2288 | { | |
2289 | /* In-memory XBM file. */ | |
2290 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2291 | return 0; | |
2292 | } | |
2293 | else | |
2294 | { | |
2295 | Lisp_Object data; | |
13464394 | 2296 | int width, height; |
4ef0d4d0 KS |
2297 | |
2298 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2299 | if (!kw[XBM_WIDTH].count | |
2300 | || !kw[XBM_HEIGHT].count | |
2301 | || !kw[XBM_DATA].count) | |
2302 | return 0; | |
2303 | ||
2304 | data = kw[XBM_DATA].value; | |
2305 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2306 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2307 | ||
2308 | /* Check type of data, and width and height against contents of | |
2309 | data. */ | |
2310 | if (VECTORP (data)) | |
2311 | { | |
45aebb64 | 2312 | EMACS_INT i; |
4ef0d4d0 KS |
2313 | |
2314 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2315 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2316 | return 0; |
2317 | ||
2318 | /* Each string or bool-vector in data must be large enough | |
2319 | for one line of the image. */ | |
2320 | for (i = 0; i < height; ++i) | |
2321 | { | |
28be1ada | 2322 | Lisp_Object elt = AREF (data, i); |
4ef0d4d0 KS |
2323 | |
2324 | if (STRINGP (elt)) | |
2325 | { | |
2326 | if (SCHARS (elt) | |
2327 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2328 | return 0; | |
2329 | } | |
2330 | else if (BOOL_VECTOR_P (elt)) | |
2331 | { | |
2332 | if (XBOOL_VECTOR (elt)->size < width) | |
2333 | return 0; | |
2334 | } | |
2335 | else | |
2336 | return 0; | |
2337 | } | |
2338 | } | |
2339 | else if (STRINGP (data)) | |
2340 | { | |
2341 | if (SCHARS (data) | |
2342 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2343 | return 0; | |
2344 | } | |
2345 | else if (BOOL_VECTOR_P (data)) | |
2346 | { | |
ca4aa935 | 2347 | if (XBOOL_VECTOR (data)->size / height < width) |
4ef0d4d0 KS |
2348 | return 0; |
2349 | } | |
2350 | else | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | return 1; | |
2355 | } | |
2356 | ||
2357 | ||
2358 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2359 | either an enumerator from enum xbm_token, or a character for a | |
2360 | single-character token, or 0 at end of file. If scanning an | |
2361 | identifier, store the lexeme of the identifier in SVAL. If | |
2362 | scanning a number, store its value in *IVAL. */ | |
2363 | ||
2364 | static int | |
d3da34e0 | 2365 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2366 | { |
2367 | unsigned int c; | |
2368 | ||
2369 | loop: | |
2370 | ||
2371 | /* Skip white space. */ | |
620f13b0 | 2372 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
2373 | ; |
2374 | ||
2375 | if (*s >= end) | |
2376 | c = 0; | |
620f13b0 | 2377 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2378 | { |
2379 | int value = 0, digit; | |
2380 | ||
2381 | if (c == '0' && *s < end) | |
2382 | { | |
2383 | c = *(*s)++; | |
2384 | if (c == 'x' || c == 'X') | |
2385 | { | |
2386 | while (*s < end) | |
2387 | { | |
2388 | c = *(*s)++; | |
620f13b0 | 2389 | if (c_isdigit (c)) |
4ef0d4d0 KS |
2390 | digit = c - '0'; |
2391 | else if (c >= 'a' && c <= 'f') | |
2392 | digit = c - 'a' + 10; | |
2393 | else if (c >= 'A' && c <= 'F') | |
2394 | digit = c - 'A' + 10; | |
2395 | else | |
2396 | break; | |
2397 | value = 16 * value + digit; | |
2398 | } | |
2399 | } | |
620f13b0 | 2400 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2401 | { |
2402 | value = c - '0'; | |
2403 | while (*s < end | |
620f13b0 | 2404 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2405 | value = 8 * value + c - '0'; |
2406 | } | |
2407 | } | |
2408 | else | |
2409 | { | |
2410 | value = c - '0'; | |
2411 | while (*s < end | |
620f13b0 | 2412 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2413 | value = 10 * value + c - '0'; |
2414 | } | |
2415 | ||
2416 | if (*s < end) | |
2417 | *s = *s - 1; | |
2418 | *ival = value; | |
2419 | c = XBM_TK_NUMBER; | |
2420 | } | |
620f13b0 | 2421 | else if (c_isalpha (c) || c == '_') |
4ef0d4d0 KS |
2422 | { |
2423 | *sval++ = c; | |
2424 | while (*s < end | |
620f13b0 | 2425 | && (c = *(*s)++, (c_isalnum (c) || c == '_'))) |
4ef0d4d0 KS |
2426 | *sval++ = c; |
2427 | *sval = 0; | |
2428 | if (*s < end) | |
2429 | *s = *s - 1; | |
2430 | c = XBM_TK_IDENT; | |
2431 | } | |
2432 | else if (c == '/' && **s == '*') | |
2433 | { | |
2434 | /* C-style comment. */ | |
2435 | ++*s; | |
2436 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2437 | ++*s; | |
2438 | if (**s) | |
2439 | { | |
2440 | *s += 2; | |
2441 | goto loop; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | return c; | |
2446 | } | |
2447 | ||
2448 | #ifdef HAVE_NTGUI | |
2449 | ||
2450 | /* Create a Windows bitmap from X bitmap data. */ | |
2451 | static HBITMAP | |
2452 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2453 | { | |
2454 | static unsigned char swap_nibble[16] | |
2455 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2456 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2457 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2458 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2459 | int i, j, w1, w2; | |
2460 | unsigned char *bits, *p; | |
2461 | HBITMAP bmp; | |
2462 | ||
2463 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2464 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
38182d90 | 2465 | bits = alloca (height * w2); |
72af86bd | 2466 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2467 | for (i = 0; i < height; i++) |
2468 | { | |
2469 | p = bits + i*w2; | |
2470 | for (j = 0; j < w1; j++) | |
2471 | { | |
2472 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2473 | unsigned char c = *data++; | |
2474 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2475 | | (swap_nibble[(c>>4) & 0xf])); | |
2476 | } | |
2477 | } | |
2478 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2479 | ||
2480 | return bmp; | |
2481 | } | |
2482 | ||
3046a84b | 2483 | static void |
7c3320d8 JB |
2484 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2485 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2486 | { |
2487 | HDC hdc, old_img_dc, new_img_dc; | |
2488 | HGDIOBJ old_prev, new_prev; | |
2489 | HBITMAP new_pixmap; | |
2490 | ||
2491 | hdc = get_frame_dc (f); | |
2492 | old_img_dc = CreateCompatibleDC (hdc); | |
2493 | new_img_dc = CreateCompatibleDC (hdc); | |
2494 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2495 | release_frame_dc (f, hdc); | |
2496 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2497 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2498 | /* Windows convention for mono bitmaps is black = background, |
2499 | white = foreground. */ | |
2386b1f1 JR |
2500 | SetTextColor (new_img_dc, background); |
2501 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2502 | |
2503 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2504 | 0, 0, SRCCOPY); | |
2505 | ||
2506 | SelectObject (old_img_dc, old_prev); | |
2507 | SelectObject (new_img_dc, new_prev); | |
2508 | DeleteDC (old_img_dc); | |
2509 | DeleteDC (new_img_dc); | |
2510 | DeleteObject (img->pixmap); | |
2511 | if (new_pixmap == 0) | |
2512 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2513 | else | |
2514 | img->pixmap = new_pixmap; | |
2515 | } | |
2516 | ||
2517 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2518 | ||
2519 | #else | |
2520 | ||
2521 | #define XBM_BIT_SHUFFLE(b) (b) | |
2522 | ||
2523 | #endif /* HAVE_NTGUI */ | |
2524 | ||
2525 | ||
2526 | static void | |
d3da34e0 JB |
2527 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2528 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
578098f3 | 2529 | bool non_default_colors) |
4ef0d4d0 KS |
2530 | { |
2531 | #ifdef HAVE_NTGUI | |
2532 | img->pixmap | |
2533 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2534 | ||
2535 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2536 | if (non_default_colors) | |
2537 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2538 | |
2539 | #elif defined (HAVE_NS) | |
ed3751c8 | 2540 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2541 | |
4ef0d4d0 | 2542 | #else |
ca4aa935 PE |
2543 | img->pixmap = |
2544 | (x_check_image_size (0, img->width, img->height) | |
2545 | ? XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
4ef0d4d0 KS |
2546 | FRAME_X_WINDOW (f), |
2547 | data, | |
2548 | img->width, img->height, | |
2549 | fg, bg, | |
ca4aa935 PE |
2550 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))) |
2551 | : NO_PIXMAP); | |
edfda783 | 2552 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2553 | } |
2554 | ||
2555 | ||
2556 | ||
2557 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2558 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2559 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2560 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
578098f3 PE |
2561 | Value is true if successful. DATA null means just test if |
2562 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR, | |
2563 | inhibit the call to image_error when the image size is invalid (the | |
2564 | bitmap remains unread). */ | |
4ef0d4d0 | 2565 | |
578098f3 | 2566 | static bool |
d3da34e0 | 2567 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2568 | int *width, int *height, char **data, |
578098f3 | 2569 | bool inhibit_image_error) |
4ef0d4d0 KS |
2570 | { |
2571 | unsigned char *s = contents; | |
2572 | char buffer[BUFSIZ]; | |
578098f3 PE |
2573 | bool padding_p = 0; |
2574 | bool v10 = 0; | |
ca4aa935 | 2575 | int bytes_per_line, i, nbytes; |
b8dc29e9 | 2576 | char *p; |
4ef0d4d0 KS |
2577 | int value; |
2578 | int LA1; | |
2579 | ||
2580 | #define match() \ | |
2581 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2582 | ||
2583 | #define expect(TOKEN) \ | |
2584 | if (LA1 != (TOKEN)) \ | |
2585 | goto failure; \ | |
2586 | else \ | |
2587 | match () | |
2588 | ||
2589 | #define expect_ident(IDENT) \ | |
2590 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2591 | match (); \ | |
2592 | else \ | |
2593 | goto failure | |
2594 | ||
2595 | *width = *height = -1; | |
2596 | if (data) | |
2597 | *data = NULL; | |
2598 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2599 | ||
2600 | /* Parse defines for width, height and hot-spots. */ | |
2601 | while (LA1 == '#') | |
2602 | { | |
2603 | match (); | |
2604 | expect_ident ("define"); | |
2605 | expect (XBM_TK_IDENT); | |
2606 | ||
431feaf6 | 2607 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2608 | { |
6ae141d6 PE |
2609 | char *q = strrchr (buffer, '_'); |
2610 | q = q ? q + 1 : buffer; | |
2611 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2612 | *width = value; |
6ae141d6 | 2613 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2614 | *height = value; |
2615 | } | |
2616 | expect (XBM_TK_NUMBER); | |
2617 | } | |
2618 | ||
f1f25b99 | 2619 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2620 | { |
ce959360 CY |
2621 | if (!inhibit_image_error) |
2622 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2623 | goto failure; |
2624 | } | |
4ef0d4d0 KS |
2625 | else if (data == NULL) |
2626 | goto success; | |
2627 | ||
2628 | /* Parse bits. Must start with `static'. */ | |
2629 | expect_ident ("static"); | |
2630 | if (LA1 == XBM_TK_IDENT) | |
2631 | { | |
2632 | if (strcmp (buffer, "unsigned") == 0) | |
2633 | { | |
2634 | match (); | |
2635 | expect_ident ("char"); | |
2636 | } | |
2637 | else if (strcmp (buffer, "short") == 0) | |
2638 | { | |
2639 | match (); | |
2640 | v10 = 1; | |
2641 | if (*width % 16 && *width % 16 < 9) | |
2642 | padding_p = 1; | |
2643 | } | |
2644 | else if (strcmp (buffer, "char") == 0) | |
2645 | match (); | |
2646 | else | |
2647 | goto failure; | |
2648 | } | |
2649 | else | |
2650 | goto failure; | |
2651 | ||
2652 | expect (XBM_TK_IDENT); | |
2653 | expect ('['); | |
2654 | expect (']'); | |
2655 | expect ('='); | |
2656 | expect ('{'); | |
2657 | ||
ca4aa935 PE |
2658 | if (! x_check_image_size (0, *width, *height)) |
2659 | { | |
2660 | if (!inhibit_image_error) | |
2661 | image_error ("Image too large (%dx%d)", | |
2662 | make_number (*width), make_number (*height)); | |
2663 | goto failure; | |
2664 | } | |
4ef0d4d0 KS |
2665 | bytes_per_line = (*width + 7) / 8 + padding_p; |
2666 | nbytes = bytes_per_line * *height; | |
23f86fce | 2667 | p = *data = xmalloc (nbytes); |
4ef0d4d0 KS |
2668 | |
2669 | if (v10) | |
2670 | { | |
2671 | for (i = 0; i < nbytes; i += 2) | |
2672 | { | |
2673 | int val = value; | |
2674 | expect (XBM_TK_NUMBER); | |
2675 | ||
2676 | *p++ = XBM_BIT_SHUFFLE (val); | |
2677 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2678 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2679 | ||
2680 | if (LA1 == ',' || LA1 == '}') | |
2681 | match (); | |
2682 | else | |
2683 | goto failure; | |
2684 | } | |
2685 | } | |
2686 | else | |
2687 | { | |
2688 | for (i = 0; i < nbytes; ++i) | |
2689 | { | |
2690 | int val = value; | |
2691 | expect (XBM_TK_NUMBER); | |
2692 | ||
2693 | *p++ = XBM_BIT_SHUFFLE (val); | |
2694 | ||
2695 | if (LA1 == ',' || LA1 == '}') | |
2696 | match (); | |
2697 | else | |
2698 | goto failure; | |
2699 | } | |
2700 | } | |
2701 | ||
2702 | success: | |
2703 | return 1; | |
2704 | ||
2705 | failure: | |
2706 | ||
2707 | if (data && *data) | |
2708 | { | |
2709 | xfree (*data); | |
2710 | *data = NULL; | |
2711 | } | |
2712 | return 0; | |
2713 | ||
2714 | #undef match | |
2715 | #undef expect | |
2716 | #undef expect_ident | |
2717 | } | |
2718 | ||
2719 | ||
2720 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
578098f3 | 2721 | CONTENTS. END is the end of the buffer. Value is true if |
4ef0d4d0 KS |
2722 | successful. */ |
2723 | ||
578098f3 | 2724 | static bool |
d3da34e0 JB |
2725 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2726 | unsigned char *end) | |
4ef0d4d0 | 2727 | { |
578098f3 | 2728 | bool rc; |
b8dc29e9 | 2729 | char *data; |
578098f3 | 2730 | bool success_p = 0; |
4ef0d4d0 | 2731 | |
ce959360 CY |
2732 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2733 | &data, 0); | |
4ef0d4d0 KS |
2734 | if (rc) |
2735 | { | |
2736 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2737 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2738 | bool non_default_colors = 0; |
4ef0d4d0 KS |
2739 | Lisp_Object value; |
2740 | ||
a54e2c05 | 2741 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
2742 | |
2743 | /* Get foreground and background colors, maybe allocate colors. */ | |
2744 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2745 | if (!NILP (value)) | |
2746 | { | |
2747 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2748 | non_default_colors = 1; | |
2749 | } | |
2750 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2751 | if (!NILP (value)) | |
2752 | { | |
2753 | background = x_alloc_image_color (f, img, value, background); | |
2754 | img->background = background; | |
2755 | img->background_valid = 1; | |
2756 | non_default_colors = 1; | |
2757 | } | |
2758 | ||
1f026899 | 2759 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2760 | foreground, background, |
2761 | non_default_colors); | |
2762 | xfree (data); | |
2763 | ||
2764 | if (img->pixmap == NO_PIXMAP) | |
2765 | { | |
2766 | x_clear_image (f, img); | |
2767 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2768 | } | |
2769 | else | |
2770 | success_p = 1; | |
2771 | } | |
2772 | else | |
2773 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2774 | ||
2775 | return success_p; | |
2776 | } | |
2777 | ||
2778 | ||
578098f3 | 2779 | /* Value is true if DATA looks like an in-memory XBM file. */ |
4ef0d4d0 | 2780 | |
578098f3 | 2781 | static bool |
d3da34e0 | 2782 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2783 | { |
2784 | int w, h; | |
2785 | return (STRINGP (data) | |
f1f25b99 | 2786 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2787 | (SDATA (data) + SBYTES (data)), |
2788 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2789 | } |
2790 | ||
2791 | ||
2792 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
578098f3 | 2793 | true if successful. */ |
4ef0d4d0 | 2794 | |
578098f3 | 2795 | static bool |
d3da34e0 | 2796 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 2797 | { |
578098f3 | 2798 | bool success_p = 0; |
4ef0d4d0 KS |
2799 | Lisp_Object file_name; |
2800 | ||
a54e2c05 | 2801 | eassert (xbm_image_p (img->spec)); |
4ef0d4d0 KS |
2802 | |
2803 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2804 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2805 | if (STRINGP (file_name)) | |
2806 | { | |
2807 | Lisp_Object file; | |
2808 | unsigned char *contents; | |
dd52fcea | 2809 | ptrdiff_t size; |
4ef0d4d0 KS |
2810 | |
2811 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2812 | if (!STRINGP (file)) |
2813 | { | |
2814 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2815 | return 0; |
2816 | } | |
2817 | ||
42a5b22f | 2818 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2819 | if (contents == NULL) |
2820 | { | |
2821 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2822 | return 0; |
2823 | } | |
2824 | ||
2825 | success_p = xbm_load_image (f, img, contents, contents + size); | |
d5a19415 | 2826 | xfree (contents); |
4ef0d4d0 KS |
2827 | } |
2828 | else | |
2829 | { | |
2830 | struct image_keyword fmt[XBM_LAST]; | |
2831 | Lisp_Object data; | |
2832 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2833 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
578098f3 | 2834 | bool non_default_colors = 0; |
4ef0d4d0 | 2835 | char *bits; |
578098f3 PE |
2836 | bool parsed_p; |
2837 | bool in_memory_file_p = 0; | |
4ef0d4d0 KS |
2838 | |
2839 | /* See if data looks like an in-memory XBM file. */ | |
2840 | data = image_spec_value (img->spec, QCdata, NULL); | |
2841 | in_memory_file_p = xbm_file_p (data); | |
2842 | ||
2843 | /* Parse the image specification. */ | |
72af86bd | 2844 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2845 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
a54e2c05 | 2846 | eassert (parsed_p); |
4ef0d4d0 KS |
2847 | |
2848 | /* Get specified width, and height. */ | |
2849 | if (!in_memory_file_p) | |
2850 | { | |
2851 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2852 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
a54e2c05 | 2853 | eassert (img->width > 0 && img->height > 0); |
ca4aa935 PE |
2854 | if (!check_image_size (f, img->width, img->height)) |
2855 | { | |
2856 | image_error ("Invalid image size (see `max-image-size')", | |
2857 | Qnil, Qnil); | |
2858 | return 0; | |
2859 | } | |
4ef0d4d0 KS |
2860 | } |
2861 | ||
2862 | /* Get foreground and background colors, maybe allocate colors. */ | |
2863 | if (fmt[XBM_FOREGROUND].count | |
2864 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2865 | { | |
2866 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2867 | foreground); | |
2868 | non_default_colors = 1; | |
2869 | } | |
2870 | ||
2871 | if (fmt[XBM_BACKGROUND].count | |
2872 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2873 | { | |
2874 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2875 | background); | |
2876 | non_default_colors = 1; | |
2877 | } | |
2878 | ||
2879 | if (in_memory_file_p) | |
2880 | success_p = xbm_load_image (f, img, SDATA (data), | |
2881 | (SDATA (data) | |
2882 | + SBYTES (data))); | |
2883 | else | |
2884 | { | |
2885 | if (VECTORP (data)) | |
2886 | { | |
2887 | int i; | |
2888 | char *p; | |
2889 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2890 | ||
38182d90 | 2891 | p = bits = alloca (nbytes * img->height); |
4ef0d4d0 KS |
2892 | for (i = 0; i < img->height; ++i, p += nbytes) |
2893 | { | |
28be1ada | 2894 | Lisp_Object line = AREF (data, i); |
4ef0d4d0 | 2895 | if (STRINGP (line)) |
72af86bd | 2896 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2897 | else |
72af86bd | 2898 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2899 | } |
2900 | } | |
2901 | else if (STRINGP (data)) | |
42a5b22f | 2902 | bits = SSDATA (data); |
4ef0d4d0 | 2903 | else |
b8dc29e9 | 2904 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2905 | |
0fda9b75 | 2906 | #ifdef HAVE_NTGUI |
44b1dc2e JR |
2907 | { |
2908 | char *invertedBits; | |
2909 | int nbytes, i; | |
2910 | /* Windows mono bitmaps are reversed compared with X. */ | |
2911 | invertedBits = bits; | |
285d07e2 | 2912 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2913 | * img->height; |
38182d90 | 2914 | bits = alloca (nbytes); |
44b1dc2e JR |
2915 | for (i = 0; i < nbytes; i++) |
2916 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2917 | } | |
2918 | #endif | |
4ef0d4d0 KS |
2919 | /* Create the pixmap. */ |
2920 | ||
ca4aa935 PE |
2921 | if (x_check_image_size (0, img->width, img->height)) |
2922 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2923 | foreground, background, | |
2924 | non_default_colors); | |
2925 | else | |
2926 | img->pixmap = NO_PIXMAP; | |
2927 | ||
4ef0d4d0 KS |
2928 | if (img->pixmap) |
2929 | success_p = 1; | |
2930 | else | |
2931 | { | |
2932 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2933 | img->spec, Qnil); | |
2934 | x_clear_image (f, img); | |
2935 | } | |
2936 | } | |
2937 | } | |
2938 | ||
2939 | return success_p; | |
2940 | } | |
2941 | ||
2942 | ||
2943 | \f | |
2944 | /*********************************************************************** | |
2945 | XPM images | |
2946 | ***********************************************************************/ | |
2947 | ||
9e2a2647 | 2948 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2949 | |
578098f3 PE |
2950 | static bool xpm_image_p (Lisp_Object object); |
2951 | static bool xpm_load (struct frame *f, struct image *img); | |
4ef0d4d0 | 2952 | |
9e2a2647 | 2953 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
2954 | |
2955 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
2956 | #ifdef HAVE_NTGUI |
2957 | /* Indicate to xpm.h that we don't have Xlib. */ | |
2958 | #define FOR_MSW | |
2959 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 2960 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
2961 | #define XColor xpm_XColor |
2962 | #define XImage xpm_XImage | |
279d3293 | 2963 | #define Display xpm_Display |
4ef0d4d0 KS |
2964 | #define PIXEL_ALREADY_TYPEDEFED |
2965 | #include "X11/xpm.h" | |
2966 | #undef FOR_MSW | |
2967 | #undef XColor | |
2968 | #undef XImage | |
279d3293 | 2969 | #undef Display |
4ef0d4d0 KS |
2970 | #undef PIXEL_ALREADY_TYPEDEFED |
2971 | #else | |
2972 | #include "X11/xpm.h" | |
2973 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 2974 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 2975 | |
9e2a2647 | 2976 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
2977 | /* The symbol `xpm' identifying XPM-format images. */ |
2978 | ||
955cbe7b | 2979 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
2980 | |
2981 | /* Indices of image specification fields in xpm_format, below. */ | |
2982 | ||
2983 | enum xpm_keyword_index | |
2984 | { | |
2985 | XPM_TYPE, | |
2986 | XPM_FILE, | |
2987 | XPM_DATA, | |
2988 | XPM_ASCENT, | |
2989 | XPM_MARGIN, | |
2990 | XPM_RELIEF, | |
2991 | XPM_ALGORITHM, | |
2992 | XPM_HEURISTIC_MASK, | |
2993 | XPM_MASK, | |
2994 | XPM_COLOR_SYMBOLS, | |
2995 | XPM_BACKGROUND, | |
2996 | XPM_LAST | |
2997 | }; | |
2998 | ||
2999 | /* Vector of image_keyword structures describing the format | |
3000 | of valid XPM image specifications. */ | |
3001 | ||
91433552 | 3002 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
3003 | { |
3004 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3005 | {":file", IMAGE_STRING_VALUE, 0}, | |
3006 | {":data", IMAGE_STRING_VALUE, 0}, | |
3007 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 3008 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
3009 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
3010 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3011 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3012 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3013 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3014 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3015 | }; | |
3016 | ||
a9e7a9d5 | 3017 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 3018 | static bool init_xpm_functions (void); |
bb4d86b4 CY |
3019 | #else |
3020 | #define init_xpm_functions NULL | |
3021 | #endif | |
3022 | ||
4ef0d4d0 KS |
3023 | /* Structure describing the image type XPM. */ |
3024 | ||
3025 | static struct image_type xpm_type = | |
3026 | { | |
3027 | &Qxpm, | |
3028 | xpm_image_p, | |
3029 | xpm_load, | |
3030 | x_clear_image, | |
bb4d86b4 | 3031 | init_xpm_functions, |
4ef0d4d0 KS |
3032 | NULL |
3033 | }; | |
3034 | ||
3035 | #ifdef HAVE_X_WINDOWS | |
3036 | ||
3037 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3038 | functions for allocating image colors. Our own functions handle | |
3039 | color allocation failures more gracefully than the ones on the XPM | |
3040 | lib. */ | |
3041 | ||
3042 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3043 | #define ALLOC_XPM_COLORS | |
3044 | #endif | |
3045 | #endif /* HAVE_X_WINDOWS */ | |
3046 | ||
3047 | #ifdef ALLOC_XPM_COLORS | |
3048 | ||
f57e2426 J |
3049 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, |
3050 | XColor *, int); | |
4ef0d4d0 KS |
3051 | |
3052 | /* An entry in a hash table used to cache color definitions of named | |
3053 | colors. This cache is necessary to speed up XPM image loading in | |
3054 | case we do color allocations ourselves. Without it, we would need | |
3055 | a call to XParseColor per pixel in the image. */ | |
3056 | ||
3057 | struct xpm_cached_color | |
3058 | { | |
3059 | /* Next in collision chain. */ | |
3060 | struct xpm_cached_color *next; | |
3061 | ||
3062 | /* Color definition (RGB and pixel color). */ | |
3063 | XColor color; | |
3064 | ||
3065 | /* Color name. */ | |
3066 | char name[1]; | |
3067 | }; | |
3068 | ||
3069 | /* The hash table used for the color cache, and its bucket vector | |
3070 | size. */ | |
3071 | ||
3072 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3073 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3074 | |
3075 | /* Initialize the color cache. */ | |
3076 | ||
3077 | static void | |
d3da34e0 | 3078 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3079 | { |
3080 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
23f86fce | 3081 | xpm_color_cache = xzalloc (nbytes); |
4ef0d4d0 KS |
3082 | init_color_table (); |
3083 | ||
3084 | if (attrs->valuemask & XpmColorSymbols) | |
3085 | { | |
3086 | int i; | |
3087 | XColor color; | |
3088 | ||
3089 | for (i = 0; i < attrs->numsymbols; ++i) | |
3090 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3091 | attrs->colorsymbols[i].value, &color)) | |
3092 | { | |
3093 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3094 | color.blue); | |
3095 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3096 | } | |
3097 | } | |
3098 | } | |
3099 | ||
3100 | /* Free the color cache. */ | |
3101 | ||
3102 | static void | |
d3da34e0 | 3103 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3104 | { |
3105 | struct xpm_cached_color *p, *next; | |
3106 | int i; | |
3107 | ||
3108 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3109 | for (p = xpm_color_cache[i]; p; p = next) | |
3110 | { | |
3111 | next = p->next; | |
3112 | xfree (p); | |
3113 | } | |
3114 | ||
3115 | xfree (xpm_color_cache); | |
3116 | xpm_color_cache = NULL; | |
3117 | free_color_table (); | |
3118 | } | |
3119 | ||
3120 | /* Return the bucket index for color named COLOR_NAME in the color | |
3121 | cache. */ | |
3122 | ||
3123 | static int | |
d3da34e0 | 3124 | xpm_color_bucket (char *color_name) |
4ef0d4d0 | 3125 | { |
3f791afe PE |
3126 | EMACS_UINT hash = hash_string (color_name, strlen (color_name)); |
3127 | return hash % XPM_COLOR_CACHE_BUCKETS; | |
4ef0d4d0 KS |
3128 | } |
3129 | ||
3130 | ||
3131 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3132 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3133 | entry added. */ | |
3134 | ||
3135 | static struct xpm_cached_color * | |
d3da34e0 | 3136 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3137 | { |
3138 | size_t nbytes; | |
3139 | struct xpm_cached_color *p; | |
3140 | ||
3141 | if (bucket < 0) | |
3142 | bucket = xpm_color_bucket (color_name); | |
3143 | ||
3f791afe | 3144 | nbytes = offsetof (struct xpm_cached_color, name) + strlen (color_name) + 1; |
23f86fce | 3145 | p = xmalloc (nbytes); |
4ef0d4d0 KS |
3146 | strcpy (p->name, color_name); |
3147 | p->color = *color; | |
3148 | p->next = xpm_color_cache[bucket]; | |
3149 | xpm_color_cache[bucket] = p; | |
3150 | return p; | |
3151 | } | |
3152 | ||
3153 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3154 | return the cached definition in *COLOR. Otherwise, make a new | |
578098f3 | 3155 | entry in the cache and allocate the color. Value is false if color |
4ef0d4d0 KS |
3156 | allocation failed. */ |
3157 | ||
578098f3 | 3158 | static bool |
d3da34e0 | 3159 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3160 | { |
3161 | struct xpm_cached_color *p; | |
3162 | int h = xpm_color_bucket (color_name); | |
3163 | ||
3164 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3165 | if (strcmp (p->name, color_name) == 0) | |
3166 | break; | |
3167 | ||
3168 | if (p != NULL) | |
3169 | *color = p->color; | |
3170 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3171 | color_name, color)) | |
3172 | { | |
3173 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3174 | color->blue); | |
3175 | p = xpm_cache_color (f, color_name, color, h); | |
3176 | } | |
3177 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3178 | with transparency, and it's useful. */ | |
3179 | else if (strcmp ("opaque", color_name) == 0) | |
3180 | { | |
72af86bd | 3181 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3182 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3183 | p = xpm_cache_color (f, color_name, color, h); | |
3184 | } | |
3185 | ||
3186 | return p != NULL; | |
3187 | } | |
3188 | ||
3189 | ||
3190 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3191 | CLOSURE is a pointer to the frame on which we allocate the | |
3192 | color. Return in *COLOR the allocated color. Value is non-zero | |
3193 | if successful. */ | |
3194 | ||
3195 | static int | |
d3da34e0 JB |
3196 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3197 | void *closure) | |
4ef0d4d0 KS |
3198 | { |
3199 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3200 | } | |
3201 | ||
3202 | ||
3203 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3204 | is a pointer to the frame on which we allocate the color. Value is | |
3205 | non-zero if successful. */ | |
3206 | ||
3207 | static int | |
d3da34e0 | 3208 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3209 | { |
3210 | return 1; | |
3211 | } | |
3212 | ||
3213 | #endif /* ALLOC_XPM_COLORS */ | |
3214 | ||
3215 | ||
0fda9b75 | 3216 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
3217 | |
3218 | /* XPM library details. */ | |
3219 | ||
14beddf4 CY |
3220 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3221 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3222 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3223 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3224 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3225 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3226 | |
578098f3 | 3227 | static bool |
d07ff9db | 3228 | init_xpm_functions (void) |
4ef0d4d0 KS |
3229 | { |
3230 | HMODULE library; | |
3231 | ||
d07ff9db | 3232 | if (!(library = w32_delayed_load (Qxpm))) |
4ef0d4d0 KS |
3233 | return 0; |
3234 | ||
3235 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3236 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3237 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3238 | LOAD_IMGLIB_FN (library, XImageFree); | |
3239 | return 1; | |
3240 | } | |
3241 | ||
0fda9b75 | 3242 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 3243 | |
a9e7a9d5 | 3244 | #if defined HAVE_NTGUI && !defined WINDOWSNT |
0fda9b75 DC |
3245 | /* Glue for code below */ |
3246 | #define fn_XpmReadFileToImage XpmReadFileToImage | |
3247 | #define fn_XpmCreateImageFromBuffer XpmCreateImageFromBuffer | |
3248 | #define fn_XImageFree XImageFree | |
3249 | #define fn_XpmFreeAttributes XpmFreeAttributes | |
2ae3a8a7 | 3250 | #endif /* HAVE_NTGUI && !WINDOWSNT */ |
4ef0d4d0 | 3251 | |
578098f3 | 3252 | /* Value is true if COLOR_SYMBOLS is a valid color symbols list |
4ef0d4d0 KS |
3253 | for XPM images. Such a list must consist of conses whose car and |
3254 | cdr are strings. */ | |
3255 | ||
578098f3 | 3256 | static bool |
d3da34e0 | 3257 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3258 | { |
3259 | while (CONSP (color_symbols)) | |
3260 | { | |
3261 | Lisp_Object sym = XCAR (color_symbols); | |
3262 | if (!CONSP (sym) | |
3263 | || !STRINGP (XCAR (sym)) | |
3264 | || !STRINGP (XCDR (sym))) | |
3265 | break; | |
3266 | color_symbols = XCDR (color_symbols); | |
3267 | } | |
3268 | ||
3269 | return NILP (color_symbols); | |
3270 | } | |
3271 | ||
3272 | ||
578098f3 | 3273 | /* Value is true if OBJECT is a valid XPM image specification. */ |
4ef0d4d0 | 3274 | |
578098f3 | 3275 | static bool |
d3da34e0 | 3276 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3277 | { |
3278 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3279 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3280 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3281 | /* Either `:file' or `:data' must be present. */ | |
3282 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3283 | /* Either no `:color-symbols' or it's a list of conses | |
3284 | whose car and cdr are strings. */ | |
3285 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3286 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3287 | } | |
3288 | ||
9e2a2647 | 3289 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3290 | |
cd44d2eb | 3291 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
0766b489 | 3292 | ptrdiff_t |
ef1b0ba7 | 3293 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3294 | { |
3295 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 PE |
3296 | ptrdiff_t id; |
3297 | int rc; | |
786a43d6 CY |
3298 | XpmAttributes attrs; |
3299 | Pixmap bitmap, mask; | |
3300 | ||
72af86bd | 3301 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3302 | |
54188d8f CY |
3303 | attrs.visual = FRAME_X_VISUAL (f); |
3304 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3305 | attrs.valuemask |= XpmVisual; | |
3306 | attrs.valuemask |= XpmColormap; | |
3307 | ||
786a43d6 | 3308 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3309 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3310 | if (rc != XpmSuccess) |
fe45ad15 CY |
3311 | { |
3312 | XpmFreeAttributes (&attrs); | |
3313 | return -1; | |
3314 | } | |
786a43d6 CY |
3315 | |
3316 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3317 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3318 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3319 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3320 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3321 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3322 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3323 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3324 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3325 | ||
3326 | XpmFreeAttributes (&attrs); | |
3327 | return id; | |
3328 | } | |
0d876a14 | 3329 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3330 | |
4ef0d4d0 | 3331 | /* Load image IMG which will be displayed on frame F. Value is |
578098f3 | 3332 | true if successful. */ |
4ef0d4d0 | 3333 | |
ea1aaa6f ST |
3334 | #ifdef HAVE_XPM |
3335 | ||
578098f3 | 3336 | static bool |
d3da34e0 | 3337 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3338 | { |
3339 | int rc; | |
3340 | XpmAttributes attrs; | |
3341 | Lisp_Object specified_file, color_symbols; | |
3342 | #ifdef HAVE_NTGUI | |
3343 | HDC hdc; | |
3344 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3345 | #endif /* HAVE_NTGUI */ | |
3346 | ||
3347 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3348 | close colors. Return colors allocated. */ | |
72af86bd | 3349 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3350 | |
3351 | #ifndef HAVE_NTGUI | |
3352 | attrs.visual = FRAME_X_VISUAL (f); | |
3353 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3354 | attrs.valuemask |= XpmVisual; | |
3355 | attrs.valuemask |= XpmColormap; | |
3356 | #endif /* HAVE_NTGUI */ | |
3357 | ||
3358 | #ifdef ALLOC_XPM_COLORS | |
3359 | /* Allocate colors with our own functions which handle | |
3360 | failing color allocation more gracefully. */ | |
3361 | attrs.color_closure = f; | |
3362 | attrs.alloc_color = xpm_alloc_color; | |
3363 | attrs.free_colors = xpm_free_colors; | |
3364 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3365 | #else /* not ALLOC_XPM_COLORS */ | |
3366 | /* Let the XPM lib allocate colors. */ | |
3367 | attrs.valuemask |= XpmReturnAllocPixels; | |
3368 | #ifdef XpmAllocCloseColors | |
3369 | attrs.alloc_close_colors = 1; | |
3370 | attrs.valuemask |= XpmAllocCloseColors; | |
3371 | #else /* not XpmAllocCloseColors */ | |
3372 | attrs.closeness = 600; | |
3373 | attrs.valuemask |= XpmCloseness; | |
3374 | #endif /* not XpmAllocCloseColors */ | |
3375 | #endif /* ALLOC_XPM_COLORS */ | |
3376 | ||
3377 | /* If image specification contains symbolic color definitions, add | |
3378 | these to `attrs'. */ | |
3379 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3380 | if (CONSP (color_symbols)) | |
3381 | { | |
3382 | Lisp_Object tail; | |
3383 | XpmColorSymbol *xpm_syms; | |
3384 | int i, size; | |
3385 | ||
3386 | attrs.valuemask |= XpmColorSymbols; | |
3387 | ||
3388 | /* Count number of symbols. */ | |
3389 | attrs.numsymbols = 0; | |
3390 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3391 | ++attrs.numsymbols; | |
3392 | ||
3393 | /* Allocate an XpmColorSymbol array. */ | |
3394 | size = attrs.numsymbols * sizeof *xpm_syms; | |
38182d90 | 3395 | xpm_syms = alloca (size); |
72af86bd | 3396 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3397 | attrs.colorsymbols = xpm_syms; |
3398 | ||
3399 | /* Fill the color symbol array. */ | |
3400 | for (tail = color_symbols, i = 0; | |
3401 | CONSP (tail); | |
3402 | ++i, tail = XCDR (tail)) | |
3403 | { | |
7574650a AS |
3404 | Lisp_Object name; |
3405 | Lisp_Object color; | |
e22cffbc | 3406 | char *empty_string = (char *) ""; |
7574650a AS |
3407 | |
3408 | if (!CONSP (XCAR (tail))) | |
3409 | { | |
e22cffbc PE |
3410 | xpm_syms[i].name = empty_string; |
3411 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3412 | continue; |
3413 | } | |
3414 | name = XCAR (XCAR (tail)); | |
3415 | color = XCDR (XCAR (tail)); | |
3416 | if (STRINGP (name)) | |
3417 | { | |
38182d90 | 3418 | xpm_syms[i].name = alloca (SCHARS (name) + 1); |
42a5b22f | 3419 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3420 | } |
3421 | else | |
e22cffbc | 3422 | xpm_syms[i].name = empty_string; |
7574650a AS |
3423 | if (STRINGP (color)) |
3424 | { | |
38182d90 | 3425 | xpm_syms[i].value = alloca (SCHARS (color) + 1); |
42a5b22f | 3426 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3427 | } |
3428 | else | |
e22cffbc | 3429 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3430 | } |
3431 | } | |
3432 | ||
3433 | /* Create a pixmap for the image, either from a file, or from a | |
3434 | string buffer containing data in the same format as an XPM file. */ | |
3435 | #ifdef ALLOC_XPM_COLORS | |
3436 | xpm_init_color_cache (f, &attrs); | |
3437 | #endif | |
3438 | ||
3439 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3440 | ||
3441 | #ifdef HAVE_NTGUI | |
3442 | { | |
3443 | HDC frame_dc = get_frame_dc (f); | |
3444 | hdc = CreateCompatibleDC (frame_dc); | |
3445 | release_frame_dc (f, frame_dc); | |
3446 | } | |
3447 | #endif /* HAVE_NTGUI */ | |
3448 | ||
3449 | if (STRINGP (specified_file)) | |
3450 | { | |
3451 | Lisp_Object file = x_find_image_file (specified_file); | |
3452 | if (!STRINGP (file)) | |
3453 | { | |
3454 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3455 | #ifdef ALLOC_XPM_COLORS |
3456 | xpm_free_color_cache (); | |
3457 | #endif | |
4ef0d4d0 KS |
3458 | return 0; |
3459 | } | |
3460 | ||
3461 | #ifdef HAVE_NTGUI | |
3462 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3463 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3464 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3465 | &xpm_image, &xpm_mask, | |
3466 | &attrs); | |
3467 | #else | |
3468 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3469 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3470 | &attrs); |
3471 | #endif /* HAVE_NTGUI */ | |
3472 | } | |
3473 | else | |
3474 | { | |
3475 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3476 | if (!STRINGP (buffer)) |
3477 | { | |
3478 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3479 | #ifdef ALLOC_XPM_COLORS | |
3480 | xpm_free_color_cache (); | |
3481 | #endif | |
3482 | return 0; | |
3483 | } | |
4ef0d4d0 KS |
3484 | #ifdef HAVE_NTGUI |
3485 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3486 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3487 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3488 | &xpm_image, &xpm_mask, | |
3489 | &attrs); | |
3490 | #else | |
3491 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3492 | SSDATA (buffer), |
4ef0d4d0 KS |
3493 | &img->pixmap, &img->mask, |
3494 | &attrs); | |
3495 | #endif /* HAVE_NTGUI */ | |
3496 | } | |
3497 | ||
3498 | if (rc == XpmSuccess) | |
3499 | { | |
3500 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3501 | img->colors = colors_in_color_table (&img->ncolors); | |
3502 | #else /* not ALLOC_XPM_COLORS */ | |
3503 | int i; | |
3504 | ||
3505 | #ifdef HAVE_NTGUI | |
3506 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3507 | plus some duplicate attributes. */ | |
3508 | if (xpm_image && xpm_image->bitmap) | |
3509 | { | |
3510 | img->pixmap = xpm_image->bitmap; | |
3511 | /* XImageFree in libXpm frees XImage struct without destroying | |
3512 | the bitmap, which is what we want. */ | |
3513 | fn_XImageFree (xpm_image); | |
3514 | } | |
3515 | if (xpm_mask && xpm_mask->bitmap) | |
3516 | { | |
3517 | /* The mask appears to be inverted compared with what we expect. | |
3518 | TODO: invert our expectations. See other places where we | |
3519 | have to invert bits because our idea of masks is backwards. */ | |
3520 | HGDIOBJ old_obj; | |
3521 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3522 | ||
3523 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3524 | SelectObject (hdc, old_obj); | |
3525 | ||
3526 | img->mask = xpm_mask->bitmap; | |
3527 | fn_XImageFree (xpm_mask); | |
3528 | DeleteDC (hdc); | |
3529 | } | |
3530 | ||
3531 | DeleteDC (hdc); | |
3532 | #endif /* HAVE_NTGUI */ | |
3533 | ||
3534 | /* Remember allocated colors. */ | |
0065d054 | 3535 | img->colors = xnmalloc (attrs.nalloc_pixels, sizeof *img->colors); |
ddff3151 | 3536 | img->ncolors = attrs.nalloc_pixels; |
4ef0d4d0 KS |
3537 | for (i = 0; i < attrs.nalloc_pixels; ++i) |
3538 | { | |
3539 | img->colors[i] = attrs.alloc_pixels[i]; | |
3540 | #ifdef DEBUG_X_COLORS | |
3541 | register_color (img->colors[i]); | |
3542 | #endif | |
3543 | } | |
3544 | #endif /* not ALLOC_XPM_COLORS */ | |
3545 | ||
3546 | img->width = attrs.width; | |
3547 | img->height = attrs.height; | |
a54e2c05 | 3548 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
3549 | |
3550 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3551 | #ifdef HAVE_NTGUI | |
3552 | fn_XpmFreeAttributes (&attrs); | |
3553 | #else | |
3554 | XpmFreeAttributes (&attrs); | |
3555 | #endif /* HAVE_NTGUI */ | |
3556 | } | |
3557 | else | |
3558 | { | |
3559 | #ifdef HAVE_NTGUI | |
3560 | DeleteDC (hdc); | |
3561 | #endif /* HAVE_NTGUI */ | |
3562 | ||
3563 | switch (rc) | |
3564 | { | |
3565 | case XpmOpenFailed: | |
3566 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3567 | break; | |
3568 | ||
3569 | case XpmFileInvalid: | |
3570 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3571 | break; | |
3572 | ||
3573 | case XpmNoMemory: | |
3574 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3575 | break; | |
3576 | ||
3577 | case XpmColorFailed: | |
3578 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3579 | break; | |
3580 | ||
3581 | default: | |
3582 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3583 | break; | |
3584 | } | |
3585 | } | |
3586 | ||
3587 | #ifdef ALLOC_XPM_COLORS | |
3588 | xpm_free_color_cache (); | |
3589 | #endif | |
3590 | return rc == XpmSuccess; | |
3591 | } | |
3592 | ||
3593 | #endif /* HAVE_XPM */ | |
3594 | ||
9e2a2647 | 3595 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3596 | |
9e2a2647 | 3597 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3598 | Only XPM version 3 (without any extensions) is supported. */ |
3599 | ||
f57e2426 J |
3600 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, |
3601 | int, Lisp_Object); | |
3602 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3603 | const unsigned char *, int); | |
f57e2426 J |
3604 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, |
3605 | int, Lisp_Object); | |
3606 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3607 | const unsigned char *, int); | |
ea1aaa6f ST |
3608 | |
3609 | /* Tokens returned from xpm_scan. */ | |
3610 | ||
3611 | enum xpm_token | |
3612 | { | |
3613 | XPM_TK_IDENT = 256, | |
3614 | XPM_TK_STRING, | |
3615 | XPM_TK_EOF | |
3616 | }; | |
3617 | ||
3618 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3619 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3620 | the end (exclusive) addresses of the data, respectively. Advance | |
3621 | *S while scanning. If token is either XPM_TK_IDENT or | |
3622 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3623 | length of the corresponding token, respectively. */ | |
3624 | ||
3625 | static int | |
3d608a86 J |
3626 | xpm_scan (const unsigned char **s, |
3627 | const unsigned char *end, | |
3628 | const unsigned char **beg, | |
74ca2eb3 | 3629 | ptrdiff_t *len) |
ea1aaa6f ST |
3630 | { |
3631 | int c; | |
3632 | ||
3633 | while (*s < end) | |
3634 | { | |
3635 | /* Skip white-space. */ | |
620f13b0 | 3636 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
9ecf6403 | 3637 | ; |
ea1aaa6f ST |
3638 | |
3639 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3640 | sb-dir-plus.xpm uses '+' in its identifier. */ |
620f13b0 | 3641 | if (c_isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3642 | { |
3643 | *beg = *s - 1; | |
2ff0845e | 3644 | while (*s < end |
620f13b0 PE |
3645 | && (c = **s, c_isalnum (c) |
3646 | || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3647 | ++*s; |
3648 | *len = *s - *beg; | |
3649 | return XPM_TK_IDENT; | |
3650 | } | |
ea1aaa6f | 3651 | else if (c == '"') |
9ecf6403 YM |
3652 | { |
3653 | *beg = *s; | |
3654 | while (*s < end && **s != '"') | |
3655 | ++*s; | |
3656 | *len = *s - *beg; | |
3657 | if (*s < end) | |
3658 | ++*s; | |
3659 | return XPM_TK_STRING; | |
3660 | } | |
ea1aaa6f | 3661 | else if (c == '/') |
9ecf6403 YM |
3662 | { |
3663 | if (*s < end && **s == '*') | |
3664 | { | |
3665 | /* C-style comment. */ | |
3666 | ++*s; | |
3667 | do | |
3668 | { | |
3669 | while (*s < end && *(*s)++ != '*') | |
3670 | ; | |
3671 | } | |
3672 | while (*s < end && **s != '/'); | |
3673 | if (*s < end) | |
3674 | ++*s; | |
3675 | } | |
3676 | else | |
3677 | return c; | |
3678 | } | |
ea1aaa6f | 3679 | else |
9ecf6403 | 3680 | return c; |
ea1aaa6f ST |
3681 | } |
3682 | ||
3683 | return XPM_TK_EOF; | |
3684 | } | |
3685 | ||
bbe6f2aa | 3686 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3687 | specifying the color of each pixel in XPM data. A value is either |
3688 | an integer that specifies a pixel color, Qt that specifies | |
3689 | transparency, or Qnil for the unspecified color. If the length of | |
3690 | the key string is one, a vector is used as a table. Otherwise, a | |
3691 | hash table is used. */ | |
3692 | ||
3693 | static Lisp_Object | |
3d608a86 J |
3694 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3695 | const unsigned char *, | |
3696 | int, | |
3697 | Lisp_Object), | |
3698 | Lisp_Object (**get_func) (Lisp_Object, | |
3699 | const unsigned char *, | |
3700 | int)) | |
ea1aaa6f ST |
3701 | { |
3702 | *put_func = xpm_put_color_table_v; | |
3703 | *get_func = xpm_get_color_table_v; | |
3704 | return Fmake_vector (make_number (256), Qnil); | |
3705 | } | |
3706 | ||
3707 | static void | |
3d608a86 J |
3708 | xpm_put_color_table_v (Lisp_Object color_table, |
3709 | const unsigned char *chars_start, | |
3710 | int chars_len, | |
3711 | Lisp_Object color) | |
ea1aaa6f | 3712 | { |
28be1ada | 3713 | ASET (color_table, *chars_start, color); |
ea1aaa6f ST |
3714 | } |
3715 | ||
3716 | static Lisp_Object | |
3d608a86 J |
3717 | xpm_get_color_table_v (Lisp_Object color_table, |
3718 | const unsigned char *chars_start, | |
3719 | int chars_len) | |
ea1aaa6f | 3720 | { |
28be1ada | 3721 | return AREF (color_table, *chars_start); |
ea1aaa6f ST |
3722 | } |
3723 | ||
3724 | static Lisp_Object | |
3d608a86 J |
3725 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3726 | const unsigned char *, | |
3727 | int, | |
3728 | Lisp_Object), | |
3729 | Lisp_Object (**get_func) (Lisp_Object, | |
3730 | const unsigned char *, | |
3731 | int)) | |
ea1aaa6f ST |
3732 | { |
3733 | *put_func = xpm_put_color_table_h; | |
3734 | *get_func = xpm_get_color_table_h; | |
3735 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
3736 | make_float (DEFAULT_REHASH_SIZE), |
3737 | make_float (DEFAULT_REHASH_THRESHOLD), | |
3738 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
3739 | } |
3740 | ||
3741 | static void | |
3d608a86 J |
3742 | xpm_put_color_table_h (Lisp_Object color_table, |
3743 | const unsigned char *chars_start, | |
3744 | int chars_len, | |
3745 | Lisp_Object color) | |
ea1aaa6f ST |
3746 | { |
3747 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3748 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3749 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3750 | ||
3751 | hash_lookup (table, chars, &hash_code); | |
3752 | hash_put (table, chars, color, hash_code); | |
3753 | } | |
3754 | ||
3755 | static Lisp_Object | |
3d608a86 J |
3756 | xpm_get_color_table_h (Lisp_Object color_table, |
3757 | const unsigned char *chars_start, | |
3758 | int chars_len) | |
ea1aaa6f ST |
3759 | { |
3760 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
d3411f89 PE |
3761 | ptrdiff_t i = |
3762 | hash_lookup (table, make_unibyte_string (chars_start, chars_len), NULL); | |
ea1aaa6f ST |
3763 | |
3764 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3765 | } | |
3766 | ||
3767 | enum xpm_color_key { | |
3768 | XPM_COLOR_KEY_S, | |
3769 | XPM_COLOR_KEY_M, | |
3770 | XPM_COLOR_KEY_G4, | |
3771 | XPM_COLOR_KEY_G, | |
3772 | XPM_COLOR_KEY_C | |
3773 | }; | |
3774 | ||
46accb8f | 3775 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3776 | |
3777 | static int | |
3d608a86 | 3778 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3779 | { |
3780 | int i; | |
3781 | ||
3782 | for (i = 0; | |
3783 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3784 | i++) | |
3785 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3786 | return i; | |
3787 | return -1; | |
3788 | } | |
3789 | ||
578098f3 | 3790 | static bool |
3d608a86 J |
3791 | xpm_load_image (struct frame *f, |
3792 | struct image *img, | |
3793 | const unsigned char *contents, | |
3794 | const unsigned char *end) | |
ea1aaa6f | 3795 | { |
46accb8f | 3796 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3797 | unsigned char buffer[BUFSIZ]; |
3798 | int width, height, x, y; | |
3799 | int num_colors, chars_per_pixel; | |
74ca2eb3 PE |
3800 | ptrdiff_t len; |
3801 | int LA1; | |
46accb8f YM |
3802 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3803 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f | 3804 | Lisp_Object frame, color_symbols, color_table; |
578098f3 PE |
3805 | int best_key; |
3806 | bool have_mask = 0; | |
ea1aaa6f ST |
3807 | XImagePtr ximg = NULL, mask_img = NULL; |
3808 | ||
3809 | #define match() \ | |
3810 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3811 | ||
9ecf6403 YM |
3812 | #define expect(TOKEN) \ |
3813 | if (LA1 != (TOKEN)) \ | |
3814 | goto failure; \ | |
3815 | else \ | |
ea1aaa6f ST |
3816 | match () |
3817 | ||
9ecf6403 | 3818 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3819 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3820 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3821 | match (); \ | |
3822 | else \ | |
ea1aaa6f ST |
3823 | goto failure |
3824 | ||
3825 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3826 | goto failure; | |
3827 | s += 9; | |
ed3751c8 | 3828 | match (); |
ea1aaa6f ST |
3829 | expect_ident ("static"); |
3830 | expect_ident ("char"); | |
3831 | expect ('*'); | |
3832 | expect (XPM_TK_IDENT); | |
3833 | expect ('['); | |
3834 | expect (']'); | |
3835 | expect ('='); | |
3836 | expect ('{'); | |
3837 | expect (XPM_TK_STRING); | |
3838 | if (len >= BUFSIZ) | |
3839 | goto failure; | |
3840 | memcpy (buffer, beg, len); | |
3841 | buffer[len] = '\0'; | |
3842 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3843 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3844 | || width <= 0 || height <= 0 |
3845 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3846 | goto failure; | |
de297941 YM |
3847 | |
3848 | if (!check_image_size (f, width, height)) | |
3849 | { | |
10ea2b82 | 3850 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3851 | goto failure; |
3852 | } | |
3853 | ||
ca4aa935 PE |
3854 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
3855 | &ximg, &img->pixmap) | |
3856 | #ifndef HAVE_NS | |
3857 | || !x_create_x_image_and_pixmap (f, width, height, 1, | |
3858 | &mask_img, &img->mask) | |
3859 | #endif | |
3860 | ) | |
3861 | { | |
3862 | image_error ("Image too large", Qnil, Qnil); | |
3863 | goto failure; | |
3864 | } | |
3865 | ||
ea1aaa6f ST |
3866 | expect (','); |
3867 | ||
3868 | XSETFRAME (frame, f); | |
3869 | if (!NILP (Fxw_display_color_p (frame))) | |
3870 | best_key = XPM_COLOR_KEY_C; | |
3871 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3872 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3873 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3874 | else |
3875 | best_key = XPM_COLOR_KEY_M; | |
3876 | ||
3877 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3878 | if (chars_per_pixel == 1) | |
3879 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3880 | &get_color_table); |
ea1aaa6f ST |
3881 | else |
3882 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3883 | &get_color_table); |
ea1aaa6f ST |
3884 | |
3885 | while (num_colors-- > 0) | |
3886 | { | |
25a48bd0 | 3887 | char *color, *max_color; |
ea1aaa6f ST |
3888 | int key, next_key, max_key = 0; |
3889 | Lisp_Object symbol_color = Qnil, color_val; | |
3890 | XColor cdef; | |
3891 | ||
3892 | expect (XPM_TK_STRING); | |
3893 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3894 | goto failure; |
ea1aaa6f ST |
3895 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3896 | buffer[len - chars_per_pixel] = '\0'; | |
3897 | ||
3898 | str = strtok (buffer, " \t"); | |
3899 | if (str == NULL) | |
9ecf6403 | 3900 | goto failure; |
ea1aaa6f ST |
3901 | key = xpm_str_to_color_key (str); |
3902 | if (key < 0) | |
9ecf6403 | 3903 | goto failure; |
ea1aaa6f | 3904 | do |
9ecf6403 YM |
3905 | { |
3906 | color = strtok (NULL, " \t"); | |
3907 | if (color == NULL) | |
3908 | goto failure; | |
ea1aaa6f | 3909 | |
9db94f82 | 3910 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3911 | { |
3912 | next_key = xpm_str_to_color_key (str); | |
3913 | if (next_key >= 0) | |
3914 | break; | |
3915 | color[strlen (color)] = ' '; | |
3916 | } | |
ea1aaa6f | 3917 | |
9ecf6403 YM |
3918 | if (key == XPM_COLOR_KEY_S) |
3919 | { | |
3920 | if (NILP (symbol_color)) | |
3921 | symbol_color = build_string (color); | |
3922 | } | |
3923 | else if (max_key < key && key <= best_key) | |
3924 | { | |
3925 | max_key = key; | |
3926 | max_color = color; | |
3927 | } | |
3928 | key = next_key; | |
3929 | } | |
ea1aaa6f ST |
3930 | while (str); |
3931 | ||
3932 | color_val = Qnil; | |
3933 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3934 | { |
3935 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3936 | ||
3937 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3938 | { |
25a48bd0 | 3939 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 | 3940 | color_val = Qt; |
6045c4fd | 3941 | else if (x_defined_color (f, SSDATA (XCDR (specified_color)), |
9db94f82 YM |
3942 | &cdef, 0)) |
3943 | color_val = make_number (cdef.pixel); | |
3944 | } | |
9ecf6403 | 3945 | } |
ea1aaa6f | 3946 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3947 | { |
05131107 | 3948 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3949 | color_val = Qt; |
3950 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3951 | color_val = make_number (cdef.pixel); | |
3952 | } | |
ea1aaa6f | 3953 | if (!NILP (color_val)) |
9ecf6403 | 3954 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3955 | |
3956 | expect (','); | |
3957 | } | |
3958 | ||
ea1aaa6f ST |
3959 | for (y = 0; y < height; y++) |
3960 | { | |
3961 | expect (XPM_TK_STRING); | |
3962 | str = beg; | |
3963 | if (len < width * chars_per_pixel) | |
9ecf6403 | 3964 | goto failure; |
ea1aaa6f | 3965 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
3966 | { |
3967 | Lisp_Object color_val = | |
3968 | (*get_color_table) (color_table, str, chars_per_pixel); | |
3969 | ||
3970 | XPutPixel (ximg, x, y, | |
3971 | (INTEGERP (color_val) ? XINT (color_val) | |
3972 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 3973 | #ifndef HAVE_NS |
9ecf6403 YM |
3974 | XPutPixel (mask_img, x, y, |
3975 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
3976 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 3977 | #else |
ed3751c8 JB |
3978 | if (EQ (color_val, Qt)) |
3979 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 3980 | #endif |
9ecf6403 | 3981 | } |
ea1aaa6f | 3982 | if (y + 1 < height) |
9ecf6403 | 3983 | expect (','); |
ea1aaa6f ST |
3984 | } |
3985 | ||
3986 | img->width = width; | |
3987 | img->height = height; | |
3988 | ||
0b8ac842 YM |
3989 | /* Maybe fill in the background field while we have ximg handy. */ |
3990 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
3991 | IMAGE_BACKGROUND (img, f, ximg); | |
3992 | ||
ea1aaa6f ST |
3993 | x_put_x_image (f, ximg, img->pixmap, width, height); |
3994 | x_destroy_x_image (ximg); | |
edfda783 | 3995 | #ifndef HAVE_NS |
ea1aaa6f ST |
3996 | if (have_mask) |
3997 | { | |
9ecf6403 YM |
3998 | /* Fill in the background_transparent field while we have the |
3999 | mask handy. */ | |
4000 | image_background_transparent (img, f, mask_img); | |
4001 | ||
ea1aaa6f ST |
4002 | x_put_x_image (f, mask_img, img->mask, width, height); |
4003 | x_destroy_x_image (mask_img); | |
4004 | } | |
4005 | else | |
4006 | { | |
4007 | x_destroy_x_image (mask_img); | |
4008 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4009 | img->mask = NO_PIXMAP; | |
4010 | } | |
edfda783 | 4011 | #endif |
ea1aaa6f ST |
4012 | return 1; |
4013 | ||
4014 | failure: | |
4015 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
ea1aaa6f ST |
4016 | x_destroy_x_image (ximg); |
4017 | x_destroy_x_image (mask_img); | |
4018 | x_clear_image (f, img); | |
4019 | return 0; | |
4020 | ||
4021 | #undef match | |
4022 | #undef expect | |
4023 | #undef expect_ident | |
4024 | } | |
4025 | ||
578098f3 | 4026 | static bool |
3d608a86 J |
4027 | xpm_load (struct frame *f, |
4028 | struct image *img) | |
ea1aaa6f | 4029 | { |
578098f3 | 4030 | bool success_p = 0; |
ea1aaa6f ST |
4031 | Lisp_Object file_name; |
4032 | ||
4033 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4034 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4035 | if (STRINGP (file_name)) | |
4036 | { | |
4037 | Lisp_Object file; | |
4038 | unsigned char *contents; | |
dd52fcea | 4039 | ptrdiff_t size; |
ea1aaa6f ST |
4040 | |
4041 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4042 | if (!STRINGP (file)) |
9ecf6403 YM |
4043 | { |
4044 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4045 | return 0; |
4046 | } | |
ea1aaa6f | 4047 | |
6045c4fd | 4048 | contents = slurp_file (SSDATA (file), &size); |
ea1aaa6f | 4049 | if (contents == NULL) |
9ecf6403 YM |
4050 | { |
4051 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4052 | return 0; |
4053 | } | |
ea1aaa6f ST |
4054 | |
4055 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4056 | xfree (contents); | |
ea1aaa6f ST |
4057 | } |
4058 | else | |
4059 | { | |
4060 | Lisp_Object data; | |
4061 | ||
4062 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4063 | if (!STRINGP (data)) |
4064 | { | |
4065 | image_error ("Invalid image data `%s'", data, Qnil); | |
4066 | return 0; | |
4067 | } | |
ea1aaa6f | 4068 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4069 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4070 | } |
4071 | ||
4072 | return success_p; | |
4073 | } | |
4074 | ||
9e2a2647 | 4075 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4076 | |
ea1aaa6f | 4077 | |
4ef0d4d0 KS |
4078 | \f |
4079 | /*********************************************************************** | |
4080 | Color table | |
4081 | ***********************************************************************/ | |
4082 | ||
4083 | #ifdef COLOR_TABLE_SUPPORT | |
4084 | ||
4085 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4086 | ||
4087 | struct ct_color | |
4088 | { | |
4089 | int r, g, b; | |
4090 | unsigned long pixel; | |
4091 | ||
4092 | /* Next in color table collision list. */ | |
4093 | struct ct_color *next; | |
4094 | }; | |
4095 | ||
4096 | /* The bucket vector size to use. Must be prime. */ | |
4097 | ||
4098 | #define CT_SIZE 101 | |
4099 | ||
4100 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4101 | ||
4102 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4103 | ||
4104 | /* The color hash table. */ | |
4105 | ||
cd44d2eb | 4106 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4107 | |
4108 | /* Number of entries in the color table. */ | |
4109 | ||
cd44d2eb | 4110 | static int ct_colors_allocated; |
ddff3151 PE |
4111 | enum |
4112 | { | |
4113 | ct_colors_allocated_max = | |
4114 | min (INT_MAX, | |
4115 | min (PTRDIFF_MAX, SIZE_MAX) / sizeof (unsigned long)) | |
4116 | }; | |
4ef0d4d0 KS |
4117 | |
4118 | /* Initialize the color table. */ | |
4119 | ||
4120 | static void | |
d3da34e0 | 4121 | init_color_table (void) |
4ef0d4d0 KS |
4122 | { |
4123 | int size = CT_SIZE * sizeof (*ct_table); | |
23f86fce | 4124 | ct_table = xzalloc (size); |
4ef0d4d0 KS |
4125 | ct_colors_allocated = 0; |
4126 | } | |
4127 | ||
4128 | ||
4129 | /* Free memory associated with the color table. */ | |
4130 | ||
4131 | static void | |
d3da34e0 | 4132 | free_color_table (void) |
4ef0d4d0 KS |
4133 | { |
4134 | int i; | |
4135 | struct ct_color *p, *next; | |
4136 | ||
4137 | for (i = 0; i < CT_SIZE; ++i) | |
4138 | for (p = ct_table[i]; p; p = next) | |
4139 | { | |
4140 | next = p->next; | |
4141 | xfree (p); | |
4142 | } | |
4143 | ||
4144 | xfree (ct_table); | |
4145 | ct_table = NULL; | |
4146 | } | |
4147 | ||
4148 | ||
4149 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4150 | entry for that color already is in the color table, return the | |
4151 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4152 | G, B, and make an entry in the color table. */ | |
4153 | ||
4154 | static unsigned long | |
d3da34e0 | 4155 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4156 | { |
4157 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4158 | int i = hash % CT_SIZE; | |
4159 | struct ct_color *p; | |
4160 | Display_Info *dpyinfo; | |
4161 | ||
4162 | /* Handle TrueColor visuals specially, which improves performance by | |
4163 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4164 | a nop, and pixel colors specify RGB values directly. See also | |
4165 | the Xlib spec, chapter 3.1. */ | |
4166 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4167 | if (dpyinfo->red_bits > 0) | |
4168 | { | |
4169 | unsigned long pr, pg, pb; | |
4170 | ||
4171 | /* Apply gamma-correction like normal color allocation does. */ | |
4172 | if (f->gamma) | |
4173 | { | |
4174 | XColor color; | |
4175 | color.red = r, color.green = g, color.blue = b; | |
4176 | gamma_correct (f, &color); | |
4177 | r = color.red, g = color.green, b = color.blue; | |
4178 | } | |
4179 | ||
4180 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4181 | them to the right position in the pixel color. Note that the | |
4182 | original RGB values are 16-bit values, as usual in X. */ | |
4183 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4184 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4185 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4186 | ||
4187 | /* Assemble the pixel color. */ | |
4188 | return pr | pg | pb; | |
4189 | } | |
1f026899 | 4190 | |
4ef0d4d0 KS |
4191 | for (p = ct_table[i]; p; p = p->next) |
4192 | if (p->r == r && p->g == g && p->b == b) | |
4193 | break; | |
4194 | ||
4195 | if (p == NULL) | |
4196 | { | |
4197 | ||
4198 | #ifdef HAVE_X_WINDOWS | |
4199 | XColor color; | |
4200 | Colormap cmap; | |
578098f3 | 4201 | bool rc; |
ddff3151 PE |
4202 | #else |
4203 | COLORREF color; | |
4204 | #endif | |
4ef0d4d0 | 4205 | |
ddff3151 PE |
4206 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4207 | return FRAME_FOREGROUND_PIXEL (f); | |
4208 | ||
4209 | #ifdef HAVE_X_WINDOWS | |
4ef0d4d0 KS |
4210 | color.red = r; |
4211 | color.green = g; | |
4212 | color.blue = b; | |
4213 | ||
4214 | cmap = FRAME_X_COLORMAP (f); | |
4215 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4216 | if (rc) | |
4217 | { | |
4218 | ++ct_colors_allocated; | |
23f86fce | 4219 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4220 | p->r = r; |
4221 | p->g = g; | |
4222 | p->b = b; | |
4223 | p->pixel = color.pixel; | |
4224 | p->next = ct_table[i]; | |
4225 | ct_table[i] = p; | |
4226 | } | |
4227 | else | |
4228 | return FRAME_FOREGROUND_PIXEL (f); | |
4229 | ||
4230 | #else | |
4ef0d4d0 KS |
4231 | #ifdef HAVE_NTGUI |
4232 | color = PALETTERGB (r, g, b); | |
4233 | #else | |
4234 | color = RGB_TO_ULONG (r, g, b); | |
4235 | #endif /* HAVE_NTGUI */ | |
4236 | ++ct_colors_allocated; | |
23f86fce | 4237 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4238 | p->r = r; |
4239 | p->g = g; | |
4240 | p->b = b; | |
4241 | p->pixel = color; | |
4242 | p->next = ct_table[i]; | |
4243 | ct_table[i] = p; | |
4244 | #endif /* HAVE_X_WINDOWS */ | |
4245 | ||
4246 | } | |
4247 | ||
4248 | return p->pixel; | |
4249 | } | |
4250 | ||
4251 | ||
4252 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4253 | table. If not already present, allocate it. Value is PIXEL. */ | |
4254 | ||
4255 | static unsigned long | |
d3da34e0 | 4256 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4257 | { |
4258 | int i = pixel % CT_SIZE; | |
4259 | struct ct_color *p; | |
4260 | ||
4261 | for (p = ct_table[i]; p; p = p->next) | |
4262 | if (p->pixel == pixel) | |
4263 | break; | |
4264 | ||
4265 | if (p == NULL) | |
4266 | { | |
4267 | XColor color; | |
4268 | Colormap cmap; | |
578098f3 | 4269 | bool rc; |
4ef0d4d0 | 4270 | |
ddff3151 PE |
4271 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4272 | return FRAME_FOREGROUND_PIXEL (f); | |
4273 | ||
4ef0d4d0 KS |
4274 | #ifdef HAVE_X_WINDOWS |
4275 | cmap = FRAME_X_COLORMAP (f); | |
4276 | color.pixel = pixel; | |
4277 | x_query_color (f, &color); | |
4278 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4279 | #else | |
4d7e6e51 | 4280 | block_input (); |
4ef0d4d0 KS |
4281 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); |
4282 | color.pixel = pixel; | |
4283 | XQueryColor (NULL, cmap, &color); | |
4284 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4d7e6e51 | 4285 | unblock_input (); |
4ef0d4d0 KS |
4286 | #endif /* HAVE_X_WINDOWS */ |
4287 | ||
4288 | if (rc) | |
4289 | { | |
4290 | ++ct_colors_allocated; | |
4291 | ||
23f86fce | 4292 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4293 | p->r = color.red; |
4294 | p->g = color.green; | |
4295 | p->b = color.blue; | |
4296 | p->pixel = pixel; | |
4297 | p->next = ct_table[i]; | |
4298 | ct_table[i] = p; | |
4299 | } | |
4300 | else | |
4301 | return FRAME_FOREGROUND_PIXEL (f); | |
4302 | } | |
4303 | return p->pixel; | |
4304 | } | |
4305 | ||
4306 | ||
4307 | /* Value is a vector of all pixel colors contained in the color table, | |
4308 | allocated via xmalloc. Set *N to the number of colors. */ | |
4309 | ||
4310 | static unsigned long * | |
d3da34e0 | 4311 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4312 | { |
4313 | int i, j; | |
4314 | struct ct_color *p; | |
4315 | unsigned long *colors; | |
4316 | ||
4317 | if (ct_colors_allocated == 0) | |
4318 | { | |
4319 | *n = 0; | |
4320 | colors = NULL; | |
4321 | } | |
4322 | else | |
4323 | { | |
23f86fce | 4324 | colors = xmalloc (ct_colors_allocated * sizeof *colors); |
4ef0d4d0 KS |
4325 | *n = ct_colors_allocated; |
4326 | ||
4327 | for (i = j = 0; i < CT_SIZE; ++i) | |
4328 | for (p = ct_table[i]; p; p = p->next) | |
4329 | colors[j++] = p->pixel; | |
4330 | } | |
4331 | ||
4332 | return colors; | |
4333 | } | |
4334 | ||
4335 | #else /* COLOR_TABLE_SUPPORT */ | |
4336 | ||
4337 | static unsigned long | |
7c3320d8 | 4338 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4339 | { |
4340 | unsigned long pixel; | |
4341 | ||
4ef0d4d0 KS |
4342 | #ifdef HAVE_NTGUI |
4343 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4344 | #endif /* HAVE_NTGUI */ | |
4345 | ||
edfda783 AR |
4346 | #ifdef HAVE_NS |
4347 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4348 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4349 | return pixel; |
4350 | } | |
4351 | ||
4352 | static void | |
7c3320d8 | 4353 | init_color_table (void) |
4ef0d4d0 KS |
4354 | { |
4355 | } | |
4356 | #endif /* COLOR_TABLE_SUPPORT */ | |
4357 | ||
4358 | \f | |
4359 | /*********************************************************************** | |
4360 | Algorithms | |
4361 | ***********************************************************************/ | |
4362 | ||
4ef0d4d0 KS |
4363 | /* Edge detection matrices for different edge-detection |
4364 | strategies. */ | |
4365 | ||
4366 | static int emboss_matrix[9] = { | |
4367 | /* x - 1 x x + 1 */ | |
4368 | 2, -1, 0, /* y - 1 */ | |
4369 | -1, 0, 1, /* y */ | |
4370 | 0, 1, -2 /* y + 1 */ | |
4371 | }; | |
4372 | ||
4373 | static int laplace_matrix[9] = { | |
4374 | /* x - 1 x x + 1 */ | |
4375 | 1, 0, 0, /* y - 1 */ | |
4376 | 0, 0, 0, /* y */ | |
4377 | 0, 0, -1 /* y + 1 */ | |
4378 | }; | |
4379 | ||
4380 | /* Value is the intensity of the color whose red/green/blue values | |
4381 | are R, G, and B. */ | |
4382 | ||
4383 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4384 | ||
4385 | ||
4386 | /* On frame F, return an array of XColor structures describing image | |
4387 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
578098f3 | 4388 | means also fill the red/green/blue members of the XColor |
4ef0d4d0 KS |
4389 | structures. Value is a pointer to the array of XColors structures, |
4390 | allocated with xmalloc; it must be freed by the caller. */ | |
4391 | ||
4392 | static XColor * | |
578098f3 | 4393 | x_to_xcolors (struct frame *f, struct image *img, bool rgb_p) |
4ef0d4d0 KS |
4394 | { |
4395 | int x, y; | |
4396 | XColor *colors, *p; | |
4397 | XImagePtr_or_DC ximg; | |
4398 | #ifdef HAVE_NTGUI | |
4399 | HDC hdc; | |
4400 | HGDIOBJ prev; | |
4401 | #endif /* HAVE_NTGUI */ | |
4402 | ||
ddff3151 PE |
4403 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *colors / img->width < img->height) |
4404 | memory_full (SIZE_MAX); | |
23f86fce | 4405 | colors = xmalloc (sizeof *colors * img->width * img->height); |
4ef0d4d0 KS |
4406 | |
4407 | #ifndef HAVE_NTGUI | |
4408 | /* Get the X image IMG->pixmap. */ | |
4409 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4410 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4411 | #else | |
4412 | /* Load the image into a memory device context. */ | |
4413 | hdc = get_frame_dc (f); | |
4414 | ximg = CreateCompatibleDC (hdc); | |
4415 | release_frame_dc (f, hdc); | |
4416 | prev = SelectObject (ximg, img->pixmap); | |
4417 | #endif /* HAVE_NTGUI */ | |
4418 | ||
4419 | /* Fill the `pixel' members of the XColor array. I wished there | |
4420 | were an easy and portable way to circumvent XGetPixel. */ | |
4421 | p = colors; | |
4422 | for (y = 0; y < img->height; ++y) | |
4423 | { | |
8b7d0a16 | 4424 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
6045c4fd | 4425 | XColor *row = p; |
4ef0d4d0 | 4426 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4427 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4428 | if (rgb_p) |
4429 | x_query_colors (f, row, img->width); | |
4430 | ||
4431 | #else | |
4432 | ||
4433 | for (x = 0; x < img->width; ++x, ++p) | |
4434 | { | |
4435 | /* W32_TODO: palette support needed here? */ | |
4436 | p->pixel = GET_PIXEL (ximg, x, y); | |
4437 | if (rgb_p) | |
4438 | { | |
4ef0d4d0 KS |
4439 | p->red = RED16_FROM_ULONG (p->pixel); |
4440 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4441 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4442 | } |
4443 | } | |
4444 | #endif /* HAVE_X_WINDOWS */ | |
4445 | } | |
4446 | ||
4447 | Destroy_Image (ximg, prev); | |
4448 | ||
4449 | return colors; | |
4450 | } | |
4451 | ||
4452 | #ifdef HAVE_NTGUI | |
4453 | ||
4454 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4455 | created with CreateDIBSection, with the pointer to the bit values | |
4456 | stored in ximg->data. */ | |
4457 | ||
3046a84b | 4458 | static void |
7c3320d8 | 4459 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4460 | { |
4461 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4462 | unsigned char * pixel; |
4463 | ||
4464 | /* True color images. */ | |
4465 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4466 | { | |
4467 | int rowbytes = width * 3; | |
4468 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4469 | if (rowbytes % 4) | |
4470 | rowbytes += 4 - (rowbytes % 4); | |
4471 | ||
4472 | pixel = ximg->data + y * rowbytes + x * 3; | |
4473 | /* Windows bitmaps are in BGR order. */ | |
4474 | *pixel = GetBValue (color); | |
4475 | *(pixel + 1) = GetGValue (color); | |
4476 | *(pixel + 2) = GetRValue (color); | |
4477 | } | |
4478 | /* Monochrome images. */ | |
4479 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4480 | { | |
4481 | int rowbytes = width / 8; | |
4482 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4483 | if (rowbytes % 4) | |
4484 | rowbytes += 4 - (rowbytes % 4); | |
4485 | pixel = ximg->data + y * rowbytes + x / 8; | |
4486 | /* Filter out palette info. */ | |
4487 | if (color & 0x00ffffff) | |
4488 | *pixel = *pixel | (1 << x % 8); | |
4489 | else | |
4490 | *pixel = *pixel & ~(1 << x % 8); | |
4491 | } | |
4492 | else | |
4493 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4494 | } | |
4495 | ||
4496 | #endif /* HAVE_NTGUI */ | |
4497 | ||
4498 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4499 | RGB members are set. F is the frame on which this all happens. | |
4500 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4501 | ||
4502 | static void | |
d3da34e0 | 4503 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4504 | { |
4505 | int x, y; | |
edfda783 | 4506 | XImagePtr oimg = NULL; |
9d7112ed | 4507 | Pixmap pixmap; |
4ef0d4d0 KS |
4508 | XColor *p; |
4509 | ||
4510 | init_color_table (); | |
4511 | ||
4512 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4513 | &oimg, &pixmap); | |
4514 | p = colors; | |
4515 | for (y = 0; y < img->height; ++y) | |
4516 | for (x = 0; x < img->width; ++x, ++p) | |
4517 | { | |
4518 | unsigned long pixel; | |
4519 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4520 | XPutPixel (oimg, x, y, pixel); | |
4521 | } | |
4522 | ||
4523 | xfree (colors); | |
4524 | x_clear_image_1 (f, img, 1, 0, 1); | |
4525 | ||
4526 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4527 | x_destroy_x_image (oimg); | |
4528 | img->pixmap = pixmap; | |
4529 | #ifdef COLOR_TABLE_SUPPORT | |
4530 | img->colors = colors_in_color_table (&img->ncolors); | |
4531 | free_color_table (); | |
4532 | #endif /* COLOR_TABLE_SUPPORT */ | |
4533 | } | |
4534 | ||
4535 | ||
4536 | /* On frame F, perform edge-detection on image IMG. | |
4537 | ||
4538 | MATRIX is a nine-element array specifying the transformation | |
4539 | matrix. See emboss_matrix for an example. | |
4540 | ||
4541 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4542 | outgoing image. */ | |
4543 | ||
4544 | static void | |
d3da34e0 | 4545 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4546 | { |
4547 | XColor *colors = x_to_xcolors (f, img, 1); | |
4548 | XColor *new, *p; | |
4549 | int x, y, i, sum; | |
4550 | ||
4551 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4552 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4553 | |
4554 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4555 | ||
ddff3151 PE |
4556 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *new / img->width < img->height) |
4557 | memory_full (SIZE_MAX); | |
23f86fce | 4558 | new = xmalloc (sizeof *new * img->width * img->height); |
4ef0d4d0 KS |
4559 | |
4560 | for (y = 0; y < img->height; ++y) | |
4561 | { | |
4562 | p = COLOR (new, 0, y); | |
4563 | p->red = p->green = p->blue = 0xffff/2; | |
4564 | p = COLOR (new, img->width - 1, y); | |
4565 | p->red = p->green = p->blue = 0xffff/2; | |
4566 | } | |
4567 | ||
4568 | for (x = 1; x < img->width - 1; ++x) | |
4569 | { | |
4570 | p = COLOR (new, x, 0); | |
4571 | p->red = p->green = p->blue = 0xffff/2; | |
4572 | p = COLOR (new, x, img->height - 1); | |
4573 | p->red = p->green = p->blue = 0xffff/2; | |
4574 | } | |
4575 | ||
4576 | for (y = 1; y < img->height - 1; ++y) | |
4577 | { | |
4578 | p = COLOR (new, 1, y); | |
4579 | ||
4580 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4581 | { | |
6ae141d6 | 4582 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4583 | |
4584 | r = g = b = i = 0; | |
6ae141d6 PE |
4585 | for (yy = y - 1; yy < y + 2; ++yy) |
4586 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4587 | if (matrix[i]) |
4588 | { | |
6ae141d6 | 4589 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4590 | r += matrix[i] * t->red; |
4591 | g += matrix[i] * t->green; | |
4592 | b += matrix[i] * t->blue; | |
4593 | } | |
4594 | ||
4595 | r = (r / sum + color_adjust) & 0xffff; | |
4596 | g = (g / sum + color_adjust) & 0xffff; | |
4597 | b = (b / sum + color_adjust) & 0xffff; | |
4598 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4599 | } | |
4600 | } | |
4601 | ||
4602 | xfree (colors); | |
4603 | x_from_xcolors (f, img, new); | |
4604 | ||
4605 | #undef COLOR | |
4606 | } | |
4607 | ||
4608 | ||
4609 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4610 | on frame F. */ | |
4611 | ||
4612 | static void | |
d3da34e0 | 4613 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4614 | { |
4615 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4616 | } | |
4617 | ||
4618 | ||
4619 | /* Transform image IMG which is used on frame F with a Laplace | |
4620 | edge-detection algorithm. The result is an image that can be used | |
4621 | to draw disabled buttons, for example. */ | |
4622 | ||
4623 | static void | |
d3da34e0 | 4624 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4625 | { |
4626 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4627 | } | |
4628 | ||
4629 | ||
4630 | /* Perform edge-detection on image IMG on frame F, with specified | |
4631 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4632 | ||
4633 | MATRIX must be either | |
4634 | ||
4635 | - a list of at least 9 numbers in row-major form | |
4636 | - a vector of at least 9 numbers | |
4637 | ||
4638 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4639 | number. */ | |
4640 | ||
4641 | static void | |
d3da34e0 JB |
4642 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4643 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4644 | { |
4645 | int i = 0; | |
4646 | int trans[9]; | |
4647 | ||
4648 | if (CONSP (matrix)) | |
4649 | { | |
4650 | for (i = 0; | |
4651 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4652 | ++i, matrix = XCDR (matrix)) | |
4653 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4654 | } | |
4655 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4656 | { | |
4657 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4658 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4659 | } | |
4660 | ||
4661 | if (NILP (color_adjust)) | |
4662 | color_adjust = make_number (0xffff / 2); | |
4663 | ||
4664 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4665 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4666 | } |
4667 | ||
4668 | ||
4669 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4670 | ||
4671 | static void | |
d3da34e0 | 4672 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4673 | { |
4674 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4675 | #ifdef HAVE_NTGUI | |
4676 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4677 | #else | |
4678 | int n_planes = dpyinfo->n_planes; | |
4679 | #endif /* HAVE_NTGUI */ | |
4680 | ||
4681 | if (n_planes >= 2) | |
4682 | { | |
4683 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4684 | drawing such images with a stipple can look very odd, so | |
4685 | we're using this method instead. */ | |
4686 | XColor *colors = x_to_xcolors (f, img, 1); | |
4687 | XColor *p, *end; | |
4688 | const int h = 15000; | |
4689 | const int l = 30000; | |
4690 | ||
4691 | for (p = colors, end = colors + img->width * img->height; | |
4692 | p < end; | |
4693 | ++p) | |
4694 | { | |
4695 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4696 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4697 | p->red = p->green = p->blue = i2; | |
4698 | } | |
4699 | ||
4700 | x_from_xcolors (f, img, colors); | |
4701 | } | |
4702 | ||
4703 | /* Draw a cross over the disabled image, if we must or if we | |
4704 | should. */ | |
4705 | if (n_planes < 2 || cross_disabled_images) | |
4706 | { | |
4707 | #ifndef HAVE_NTGUI | |
5afa3a81 | 4708 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4709 | |
4ef0d4d0 | 4710 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4711 | |
6045c4fd PE |
4712 | Display *dpy = FRAME_X_DISPLAY (f); |
4713 | GC gc = XCreateGC (dpy, img->pixmap, 0, NULL); | |
4ef0d4d0 KS |
4714 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4715 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4716 | img->width - 1, img->height - 1); | |
4717 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4718 | img->width - 1, 0); | |
4719 | XFreeGC (dpy, gc); | |
4720 | ||
4721 | if (img->mask) | |
4722 | { | |
ae8279db | 4723 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4724 | XSetForeground (dpy, gc, MaskForeground (f)); |
4725 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4726 | img->width - 1, img->height - 1); | |
4727 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4728 | img->width - 1, 0); | |
4729 | XFreeGC (dpy, gc); | |
4730 | } | |
edfda783 | 4731 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4732 | #else |
4733 | HDC hdc, bmpdc; | |
4734 | HGDIOBJ prev; | |
4735 | ||
4736 | hdc = get_frame_dc (f); | |
4737 | bmpdc = CreateCompatibleDC (hdc); | |
4738 | release_frame_dc (f, hdc); | |
4739 | ||
4740 | prev = SelectObject (bmpdc, img->pixmap); | |
4741 | ||
4742 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4743 | MoveToEx (bmpdc, 0, 0, NULL); | |
4744 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4745 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4746 | LineTo (bmpdc, img->width - 1, 0); | |
4747 | ||
4748 | if (img->mask) | |
4749 | { | |
4750 | SelectObject (bmpdc, img->mask); | |
4751 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4752 | MoveToEx (bmpdc, 0, 0, NULL); | |
4753 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4754 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4755 | LineTo (bmpdc, img->width - 1, 0); | |
4756 | } | |
4757 | SelectObject (bmpdc, prev); | |
4758 | DeleteDC (bmpdc); | |
4759 | #endif /* HAVE_NTGUI */ | |
4760 | } | |
4761 | } | |
4762 | ||
4763 | ||
4764 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4765 | name of an image file, for error messages. HOW determines how to | |
4766 | determine the background color of IMG. If it is a list '(R G B)', | |
4767 | with R, G, and B being integers >= 0, take that as the color of the | |
4768 | background. Otherwise, determine the background color of IMG | |
578098f3 | 4769 | heuristically. */ |
4ef0d4d0 | 4770 | |
578098f3 | 4771 | static void |
d3da34e0 | 4772 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4773 | { |
4774 | XImagePtr_or_DC ximg; | |
4775 | #ifndef HAVE_NTGUI | |
4776 | XImagePtr mask_img; | |
4777 | #else | |
4778 | HDC frame_dc; | |
4779 | HGDIOBJ prev; | |
4780 | char *mask_img; | |
4781 | int row_width; | |
4782 | #endif /* HAVE_NTGUI */ | |
578098f3 PE |
4783 | int x, y; |
4784 | bool rc, use_img_background; | |
4ef0d4d0 KS |
4785 | unsigned long bg = 0; |
4786 | ||
4787 | if (img->mask) | |
4788 | { | |
4789 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4790 | img->mask = NO_PIXMAP; | |
4791 | img->background_transparent_valid = 0; | |
4792 | } | |
4793 | ||
4794 | #ifndef HAVE_NTGUI | |
edfda783 | 4795 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4796 | /* Create an image and pixmap serving as mask. */ |
4797 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4798 | &mask_img, &img->mask); | |
4799 | if (!rc) | |
578098f3 | 4800 | return; |
edfda783 | 4801 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4802 | |
4803 | /* Get the X image of IMG->pixmap. */ | |
4804 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4805 | img->width, img->height, | |
4806 | ~0, ZPixmap); | |
4807 | #else | |
4808 | /* Create the bit array serving as mask. */ | |
4809 | row_width = (img->width + 7) / 8; | |
23f86fce | 4810 | mask_img = xzalloc (row_width * img->height); |
4ef0d4d0 KS |
4811 | |
4812 | /* Create a memory device context for IMG->pixmap. */ | |
4813 | frame_dc = get_frame_dc (f); | |
4814 | ximg = CreateCompatibleDC (frame_dc); | |
4815 | release_frame_dc (f, frame_dc); | |
4816 | prev = SelectObject (ximg, img->pixmap); | |
4817 | #endif /* HAVE_NTGUI */ | |
4818 | ||
4819 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4820 | take that as color. Otherwise, use the image's background color. */ | |
4821 | use_img_background = 1; | |
4822 | ||
4823 | if (CONSP (how)) | |
4824 | { | |
4825 | int rgb[3], i; | |
4826 | ||
4827 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4828 | { | |
4829 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4830 | how = XCDR (how); | |
4831 | } | |
4832 | ||
4833 | if (i == 3 && NILP (how)) | |
4834 | { | |
4835 | char color_name[30]; | |
4836 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4837 | bg = ( | |
4838 | #ifdef HAVE_NTGUI | |
4839 | 0x00ffffff & /* Filter out palette info. */ | |
4840 | #endif /* HAVE_NTGUI */ | |
4841 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4842 | use_img_background = 0; | |
4843 | } | |
4844 | } | |
4845 | ||
4846 | if (use_img_background) | |
6ac3c7bb | 4847 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4848 | |
4849 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4850 | from the background color bg. */ | |
4851 | #ifndef HAVE_NTGUI | |
4852 | for (y = 0; y < img->height; ++y) | |
4853 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4854 | #ifndef HAVE_NS |
4ef0d4d0 | 4855 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4856 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4857 | #else |
4858 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4859 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4860 | #endif /* HAVE_NS */ |
4861 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4862 | /* Fill in the background_transparent field while we have the mask handy. */ |
4863 | image_background_transparent (img, f, mask_img); | |
4864 | ||
4865 | /* Put mask_img into img->mask. */ | |
4866 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4867 | x_destroy_x_image (mask_img); | |
edfda783 | 4868 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4869 | #else |
4870 | for (y = 0; y < img->height; ++y) | |
4871 | for (x = 0; x < img->width; ++x) | |
4872 | { | |
4873 | COLORREF p = GetPixel (ximg, x, y); | |
4874 | if (p != bg) | |
4875 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4876 | } | |
4877 | ||
4878 | /* Create the mask image. */ | |
4879 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4880 | mask_img); | |
4881 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4882 | SelectObject (ximg, img->mask); | |
4883 | image_background_transparent (img, f, ximg); | |
4884 | ||
4885 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4886 | xfree (mask_img); | |
4887 | #endif /* HAVE_NTGUI */ | |
4888 | ||
4889 | Destroy_Image (ximg, prev); | |
4ef0d4d0 KS |
4890 | } |
4891 | ||
4892 | \f | |
4893 | /*********************************************************************** | |
4894 | PBM (mono, gray, color) | |
4895 | ***********************************************************************/ | |
4896 | ||
578098f3 PE |
4897 | static bool pbm_image_p (Lisp_Object object); |
4898 | static bool pbm_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
4899 | |
4900 | /* The symbol `pbm' identifying images of this type. */ | |
4901 | ||
955cbe7b | 4902 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
4903 | |
4904 | /* Indices of image specification fields in gs_format, below. */ | |
4905 | ||
4906 | enum pbm_keyword_index | |
4907 | { | |
4908 | PBM_TYPE, | |
4909 | PBM_FILE, | |
4910 | PBM_DATA, | |
4911 | PBM_ASCENT, | |
4912 | PBM_MARGIN, | |
4913 | PBM_RELIEF, | |
4914 | PBM_ALGORITHM, | |
4915 | PBM_HEURISTIC_MASK, | |
4916 | PBM_MASK, | |
4917 | PBM_FOREGROUND, | |
4918 | PBM_BACKGROUND, | |
4919 | PBM_LAST | |
4920 | }; | |
4921 | ||
4922 | /* Vector of image_keyword structures describing the format | |
4923 | of valid user-defined image specifications. */ | |
4924 | ||
91433552 | 4925 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
4926 | { |
4927 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4928 | {":file", IMAGE_STRING_VALUE, 0}, | |
4929 | {":data", IMAGE_STRING_VALUE, 0}, | |
4930 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 4931 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
4932 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
4933 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4934 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4935 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4936 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4937 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4938 | }; | |
4939 | ||
4940 | /* Structure describing the image type `pbm'. */ | |
4941 | ||
4942 | static struct image_type pbm_type = | |
4943 | { | |
4944 | &Qpbm, | |
4945 | pbm_image_p, | |
4946 | pbm_load, | |
4947 | x_clear_image, | |
bb4d86b4 | 4948 | NULL, |
4ef0d4d0 KS |
4949 | NULL |
4950 | }; | |
4951 | ||
4952 | ||
578098f3 | 4953 | /* Return true if OBJECT is a valid PBM image specification. */ |
4ef0d4d0 | 4954 | |
578098f3 | 4955 | static bool |
d3da34e0 | 4956 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
4957 | { |
4958 | struct image_keyword fmt[PBM_LAST]; | |
4959 | ||
72af86bd | 4960 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
4961 | |
4962 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
4963 | return 0; | |
4964 | ||
4965 | /* Must specify either :data or :file. */ | |
4966 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
4967 | } | |
4968 | ||
4969 | ||
4970 | /* Scan a decimal number from *S and return it. Advance *S while | |
4971 | reading the number. END is the end of the string. Value is -1 at | |
4972 | end of input. */ | |
4973 | ||
4974 | static int | |
d3da34e0 | 4975 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
4976 | { |
4977 | int c = 0, val = -1; | |
4978 | ||
4979 | while (*s < end) | |
4980 | { | |
4981 | /* Skip white-space. */ | |
620f13b0 | 4982 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
4983 | ; |
4984 | ||
4985 | if (c == '#') | |
4986 | { | |
4987 | /* Skip comment to end of line. */ | |
4988 | while (*s < end && (c = *(*s)++, c != '\n')) | |
4989 | ; | |
4990 | } | |
620f13b0 | 4991 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
4992 | { |
4993 | /* Read decimal number. */ | |
4994 | val = c - '0'; | |
620f13b0 | 4995 | while (*s < end && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
4996 | val = 10 * val + c - '0'; |
4997 | break; | |
4998 | } | |
4999 | else | |
5000 | break; | |
5001 | } | |
5002 | ||
5003 | return val; | |
5004 | } | |
5005 | ||
5006 | ||
5007 | #ifdef HAVE_NTGUI | |
5008 | #if 0 /* Unused. ++kfs */ | |
5009 | ||
5010 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5011 | with xmalloc holding FILE's contents. Value is null if an error | |
5012 | occurred. *SIZE is set to the size of the file. */ | |
5013 | ||
5014 | static char * | |
1dae0f0a | 5015 | pbm_read_file (Lisp_Object file, int *size) |
4ef0d4d0 KS |
5016 | { |
5017 | FILE *fp = NULL; | |
5018 | char *buf = NULL; | |
5019 | struct stat st; | |
5020 | ||
5021 | if (stat (SDATA (file), &st) == 0 | |
5022 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
dd52fcea | 5023 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
23f86fce | 5024 | && (buf = xmalloc (st.st_size), |
4ef0d4d0 KS |
5025 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
5026 | { | |
5027 | *size = st.st_size; | |
5028 | fclose (fp); | |
5029 | } | |
5030 | else | |
5031 | { | |
5032 | if (fp) | |
5033 | fclose (fp); | |
5034 | if (buf) | |
5035 | { | |
5036 | xfree (buf); | |
5037 | buf = NULL; | |
5038 | } | |
5039 | } | |
5040 | ||
5041 | return buf; | |
5042 | } | |
5043 | #endif | |
5044 | #endif /* HAVE_NTGUI */ | |
5045 | ||
5046 | /* Load PBM image IMG for use on frame F. */ | |
5047 | ||
578098f3 | 5048 | static bool |
d3da34e0 | 5049 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 | 5050 | { |
578098f3 PE |
5051 | bool raw_p; |
5052 | int x, y; | |
4ef0d4d0 KS |
5053 | int width, height, max_color_idx = 0; |
5054 | XImagePtr ximg; | |
5055 | Lisp_Object file, specified_file; | |
5056 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5057 | unsigned char *contents = NULL; |
5058 | unsigned char *end, *p; | |
dd52fcea | 5059 | ptrdiff_t size; |
4ef0d4d0 KS |
5060 | |
5061 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5062 | |
5063 | if (STRINGP (specified_file)) | |
5064 | { | |
5065 | file = x_find_image_file (specified_file); | |
5066 | if (!STRINGP (file)) | |
5067 | { | |
5068 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5069 | return 0; |
5070 | } | |
5071 | ||
42a5b22f | 5072 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5073 | if (contents == NULL) |
5074 | { | |
5075 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5076 | return 0; |
5077 | } | |
5078 | ||
5079 | p = contents; | |
5080 | end = contents + size; | |
5081 | } | |
5082 | else | |
5083 | { | |
5084 | Lisp_Object data; | |
5085 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5086 | if (!STRINGP (data)) |
5087 | { | |
5088 | image_error ("Invalid image data `%s'", data, Qnil); | |
5089 | return 0; | |
5090 | } | |
4ef0d4d0 KS |
5091 | p = SDATA (data); |
5092 | end = p + SBYTES (data); | |
5093 | } | |
5094 | ||
5095 | /* Check magic number. */ | |
5096 | if (end - p < 2 || *p++ != 'P') | |
5097 | { | |
5098 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5099 | error: | |
5100 | xfree (contents); | |
4ef0d4d0 KS |
5101 | return 0; |
5102 | } | |
5103 | ||
5104 | switch (*p++) | |
5105 | { | |
5106 | case '1': | |
5107 | raw_p = 0, type = PBM_MONO; | |
5108 | break; | |
5109 | ||
5110 | case '2': | |
5111 | raw_p = 0, type = PBM_GRAY; | |
5112 | break; | |
5113 | ||
5114 | case '3': | |
5115 | raw_p = 0, type = PBM_COLOR; | |
5116 | break; | |
5117 | ||
5118 | case '4': | |
5119 | raw_p = 1, type = PBM_MONO; | |
5120 | break; | |
5121 | ||
5122 | case '5': | |
5123 | raw_p = 1, type = PBM_GRAY; | |
5124 | break; | |
5125 | ||
5126 | case '6': | |
5127 | raw_p = 1, type = PBM_COLOR; | |
5128 | break; | |
5129 | ||
5130 | default: | |
5131 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5132 | goto error; | |
5133 | } | |
5134 | ||
5135 | /* Read width, height, maximum color-component. Characters | |
5136 | starting with `#' up to the end of a line are ignored. */ | |
5137 | width = pbm_scan_number (&p, end); | |
5138 | height = pbm_scan_number (&p, end); | |
5139 | ||
5140 | if (type != PBM_MONO) | |
5141 | { | |
5142 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5143 | if (max_color_idx > 65535 || max_color_idx < 0) |
5144 | { | |
5145 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5146 | goto error; | |
5147 | } | |
4ef0d4d0 KS |
5148 | } |
5149 | ||
b9c89e11 JR |
5150 | if (!check_image_size (f, width, height)) |
5151 | { | |
10ea2b82 | 5152 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5153 | goto error; |
5154 | } | |
4ef0d4d0 KS |
5155 | |
5156 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5157 | &ximg, &img->pixmap)) | |
5158 | goto error; | |
5159 | ||
5160 | /* Initialize the color hash table. */ | |
5161 | init_color_table (); | |
5162 | ||
5163 | if (type == PBM_MONO) | |
5164 | { | |
5165 | int c = 0, g; | |
5166 | struct image_keyword fmt[PBM_LAST]; | |
5167 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5168 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5169 | ||
5170 | /* Parse the image specification. */ | |
72af86bd | 5171 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5172 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5173 | ||
5174 | /* Get foreground and background colors, maybe allocate colors. */ | |
5175 | if (fmt[PBM_FOREGROUND].count | |
5176 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5177 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5178 | if (fmt[PBM_BACKGROUND].count | |
5179 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5180 | { | |
5181 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5182 | img->background = bg; | |
5183 | img->background_valid = 1; | |
5184 | } | |
5185 | ||
5186 | for (y = 0; y < height; ++y) | |
5187 | for (x = 0; x < width; ++x) | |
5188 | { | |
5189 | if (raw_p) | |
5190 | { | |
5191 | if ((x & 7) == 0) | |
c295e710 CY |
5192 | { |
5193 | if (p >= end) | |
5194 | { | |
5195 | x_destroy_x_image (ximg); | |
5196 | x_clear_image (f, img); | |
5197 | image_error ("Invalid image size in image `%s'", | |
5198 | img->spec, Qnil); | |
5199 | goto error; | |
5200 | } | |
5201 | c = *p++; | |
5202 | } | |
4ef0d4d0 KS |
5203 | g = c & 0x80; |
5204 | c <<= 1; | |
5205 | } | |
5206 | else | |
5207 | g = pbm_scan_number (&p, end); | |
5208 | ||
5209 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5210 | } | |
5211 | } | |
5212 | else | |
5213 | { | |
b9c89e11 JR |
5214 | int expected_size = height * width; |
5215 | if (max_color_idx > 255) | |
5216 | expected_size *= 2; | |
5217 | if (type == PBM_COLOR) | |
5218 | expected_size *= 3; | |
5219 | ||
5220 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5221 | { |
5222 | x_destroy_x_image (ximg); | |
fb0b0862 | 5223 | x_clear_image (f, img); |
39e653ea CY |
5224 | image_error ("Invalid image size in image `%s'", |
5225 | img->spec, Qnil); | |
5226 | goto error; | |
5227 | } | |
5228 | ||
4ef0d4d0 KS |
5229 | for (y = 0; y < height; ++y) |
5230 | for (x = 0; x < width; ++x) | |
5231 | { | |
5232 | int r, g, b; | |
5233 | ||
b9c89e11 JR |
5234 | if (type == PBM_GRAY && raw_p) |
5235 | { | |
5236 | r = g = b = *p++; | |
5237 | if (max_color_idx > 255) | |
5238 | r = g = b = r * 256 + *p++; | |
5239 | } | |
5240 | else if (type == PBM_GRAY) | |
5241 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5242 | else if (raw_p) |
5243 | { | |
5244 | r = *p++; | |
b9c89e11 JR |
5245 | if (max_color_idx > 255) |
5246 | r = r * 256 + *p++; | |
4ef0d4d0 | 5247 | g = *p++; |
b9c89e11 JR |
5248 | if (max_color_idx > 255) |
5249 | g = g * 256 + *p++; | |
4ef0d4d0 | 5250 | b = *p++; |
b9c89e11 JR |
5251 | if (max_color_idx > 255) |
5252 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5253 | } |
5254 | else | |
5255 | { | |
5256 | r = pbm_scan_number (&p, end); | |
5257 | g = pbm_scan_number (&p, end); | |
5258 | b = pbm_scan_number (&p, end); | |
5259 | } | |
5260 | ||
5261 | if (r < 0 || g < 0 || b < 0) | |
5262 | { | |
5263 | x_destroy_x_image (ximg); | |
5264 | image_error ("Invalid pixel value in image `%s'", | |
5265 | img->spec, Qnil); | |
5266 | goto error; | |
5267 | } | |
5268 | ||
5269 | /* RGB values are now in the range 0..max_color_idx. | |
5270 | Scale this to the range 0..0xffff supported by X. */ | |
5271 | r = (double) r * 65535 / max_color_idx; | |
5272 | g = (double) g * 65535 / max_color_idx; | |
5273 | b = (double) b * 65535 / max_color_idx; | |
5274 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5275 | } | |
5276 | } | |
5277 | ||
5278 | #ifdef COLOR_TABLE_SUPPORT | |
5279 | /* Store in IMG->colors the colors allocated for the image, and | |
5280 | free the color table. */ | |
5281 | img->colors = colors_in_color_table (&img->ncolors); | |
5282 | free_color_table (); | |
5283 | #endif /* COLOR_TABLE_SUPPORT */ | |
5284 | ||
5285 | img->width = width; | |
5286 | img->height = height; | |
5287 | ||
5288 | /* Maybe fill in the background field while we have ximg handy. */ | |
5289 | ||
5290 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5291 | /* Casting avoids a GCC warning. */ |
5292 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5293 | |
5294 | /* Put the image into a pixmap. */ | |
5295 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5296 | x_destroy_x_image (ximg); | |
5297 | ||
5298 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5299 | img->width = width; |
4ef0d4d0 KS |
5300 | img->height = height; */ |
5301 | ||
4ef0d4d0 KS |
5302 | xfree (contents); |
5303 | return 1; | |
5304 | } | |
5305 | ||
5306 | \f | |
5307 | /*********************************************************************** | |
5308 | PNG | |
5309 | ***********************************************************************/ | |
5310 | ||
9e2a2647 | 5311 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5312 | |
5313 | /* Function prototypes. */ | |
5314 | ||
578098f3 PE |
5315 | static bool png_image_p (Lisp_Object object); |
5316 | static bool png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5317 | |
5318 | /* The symbol `png' identifying images of this type. */ | |
5319 | ||
955cbe7b | 5320 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5321 | |
5322 | /* Indices of image specification fields in png_format, below. */ | |
5323 | ||
5324 | enum png_keyword_index | |
5325 | { | |
5326 | PNG_TYPE, | |
5327 | PNG_DATA, | |
5328 | PNG_FILE, | |
5329 | PNG_ASCENT, | |
5330 | PNG_MARGIN, | |
5331 | PNG_RELIEF, | |
5332 | PNG_ALGORITHM, | |
5333 | PNG_HEURISTIC_MASK, | |
5334 | PNG_MASK, | |
5335 | PNG_BACKGROUND, | |
5336 | PNG_LAST | |
5337 | }; | |
5338 | ||
5339 | /* Vector of image_keyword structures describing the format | |
5340 | of valid user-defined image specifications. */ | |
5341 | ||
91433552 | 5342 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5343 | { |
5344 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5345 | {":data", IMAGE_STRING_VALUE, 0}, | |
5346 | {":file", IMAGE_STRING_VALUE, 0}, | |
5347 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5348 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5349 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5350 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5351 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5352 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5353 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5354 | }; | |
5355 | ||
a9e7a9d5 | 5356 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 5357 | static bool init_png_functions (void); |
bb4d86b4 CY |
5358 | #else |
5359 | #define init_png_functions NULL | |
5360 | #endif | |
5361 | ||
4ef0d4d0 KS |
5362 | /* Structure describing the image type `png'. */ |
5363 | ||
5364 | static struct image_type png_type = | |
5365 | { | |
5366 | &Qpng, | |
5367 | png_image_p, | |
5368 | png_load, | |
5369 | x_clear_image, | |
bb4d86b4 | 5370 | init_png_functions, |
4ef0d4d0 KS |
5371 | NULL |
5372 | }; | |
5373 | ||
578098f3 | 5374 | /* Return true if OBJECT is a valid PNG image specification. */ |
4ef0d4d0 | 5375 | |
578098f3 | 5376 | static bool |
d3da34e0 | 5377 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5378 | { |
5379 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5380 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5381 | |
5382 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5383 | return 0; | |
5384 | ||
5385 | /* Must specify either the :data or :file keyword. */ | |
5386 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5387 | } | |
5388 | ||
9e2a2647 | 5389 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5390 | |
5391 | ||
5392 | #ifdef HAVE_PNG | |
5393 | ||
0fda9b75 | 5394 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
5395 | /* PNG library details. */ |
5396 | ||
14beddf4 CY |
5397 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5398 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5399 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5400 | png_error_ptr, png_error_ptr)); | |
5401 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5402 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5403 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5404 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5405 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5406 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5407 | png_uint_32 *, png_uint_32 *, |
5408 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5409 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5410 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5411 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5412 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5413 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5414 | int, int, double)); |
14beddf4 CY |
5415 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5416 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5417 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5418 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5419 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5420 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5421 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5422 | |
7f9c5df9 | 5423 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5424 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5425 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5426 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 | 5427 | |
578098f3 | 5428 | static bool |
d07ff9db | 5429 | init_png_functions (void) |
4ef0d4d0 KS |
5430 | { |
5431 | HMODULE library; | |
5432 | ||
d07ff9db | 5433 | if (!(library = w32_delayed_load (Qpng))) |
4ef0d4d0 KS |
5434 | return 0; |
5435 | ||
5436 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5437 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5438 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5439 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5440 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5441 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5442 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5443 | LOAD_IMGLIB_FN (library, png_read_info); | |
5444 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5445 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5446 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5447 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5448 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5449 | LOAD_IMGLIB_FN (library, png_set_background); | |
5450 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5451 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5452 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5453 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5454 | LOAD_IMGLIB_FN (library, png_read_image); | |
5455 | LOAD_IMGLIB_FN (library, png_read_end); | |
5456 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5457 | |
5458 | #if (PNG_LIBPNG_VER >= 10500) | |
5459 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5460 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5461 | #endif /* libpng version >= 1.5 */ | |
5462 | ||
4ef0d4d0 KS |
5463 | return 1; |
5464 | } | |
5465 | #else | |
5466 | ||
5467 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5468 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5469 | #define fn_png_create_read_struct png_create_read_struct |
5470 | #define fn_png_create_info_struct png_create_info_struct | |
5471 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5472 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5473 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5474 | #define fn_png_read_info png_read_info | |
5475 | #define fn_png_get_IHDR png_get_IHDR | |
5476 | #define fn_png_get_valid png_get_valid | |
5477 | #define fn_png_set_strip_16 png_set_strip_16 | |
5478 | #define fn_png_set_expand png_set_expand | |
5479 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5480 | #define fn_png_set_background png_set_background | |
5481 | #define fn_png_get_bKGD png_get_bKGD | |
5482 | #define fn_png_read_update_info png_read_update_info | |
5483 | #define fn_png_get_channels png_get_channels | |
5484 | #define fn_png_get_rowbytes png_get_rowbytes | |
5485 | #define fn_png_read_image png_read_image | |
5486 | #define fn_png_read_end png_read_end | |
5487 | #define fn_png_error png_error | |
5488 | ||
7f9c5df9 CY |
5489 | #if (PNG_LIBPNG_VER >= 10500) |
5490 | #define fn_png_longjmp png_longjmp | |
5491 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5492 | #endif /* libpng version >= 1.5 */ | |
5493 | ||
0fda9b75 | 5494 | #endif /* WINDOWSNT */ |
4ef0d4d0 | 5495 | |
0328b6de PE |
5496 | /* Possibly inefficient/inexact substitutes for _setjmp and _longjmp. |
5497 | Do not use sys_setjmp, as PNG supports only jmp_buf. The _longjmp | |
7105c8cb EZ |
5498 | substitute may munge the signal mask, but that should be OK here. |
5499 | MinGW (MS-Windows) uses _setjmp and defines setjmp to _setjmp in | |
5500 | the system header setjmp.h; don't mess up that. */ | |
0328b6de | 5501 | #ifndef HAVE__SETJMP |
39a57ad0 | 5502 | # define _setjmp(j) setjmp (j) |
0328b6de PE |
5503 | # define _longjmp longjmp |
5504 | #endif | |
7f9c5df9 CY |
5505 | |
5506 | #if (PNG_LIBPNG_VER < 10500) | |
af26b72c | 5507 | #define PNG_LONGJMP(ptr) (_longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5508 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5509 | #else | |
df61c790 | 5510 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5511 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5512 | #define PNG_JMPBUF(ptr) \ |
af26b72c | 5513 | (*fn_png_set_longjmp_fn ((ptr), _longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5514 | #endif |
5515 | ||
4ef0d4d0 KS |
5516 | /* Error and warning handlers installed when the PNG library |
5517 | is initialized. */ | |
5518 | ||
845ca893 | 5519 | static _Noreturn void |
d3da34e0 | 5520 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5521 | { |
a54e2c05 | 5522 | eassert (png_ptr != NULL); |
5be1c984 EZ |
5523 | /* Avoid compiler warning about deprecated direct access to |
5524 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5525 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5526 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5527 | } |
5528 | ||
5529 | ||
5530 | static void | |
d3da34e0 | 5531 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5532 | { |
a54e2c05 | 5533 | eassert (png_ptr != NULL); |
4ef0d4d0 KS |
5534 | image_error ("PNG warning: %s", build_string (msg), Qnil); |
5535 | } | |
5536 | ||
5537 | /* Memory source for PNG decoding. */ | |
5538 | ||
5539 | struct png_memory_storage | |
5540 | { | |
5541 | unsigned char *bytes; /* The data */ | |
3f791afe PE |
5542 | ptrdiff_t len; /* How big is it? */ |
5543 | ptrdiff_t index; /* Where are we? */ | |
4ef0d4d0 KS |
5544 | }; |
5545 | ||
5546 | ||
5547 | /* Function set as reader function when reading PNG image from memory. | |
5548 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5549 | bytes from the input to DATA. */ | |
5550 | ||
5551 | static void | |
d3da34e0 | 5552 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5553 | { |
5554 | struct png_memory_storage *tbr | |
5555 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5556 | ||
5557 | if (length > tbr->len - tbr->index) | |
5558 | fn_png_error (png_ptr, "Read error"); | |
5559 | ||
72af86bd | 5560 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5561 | tbr->index = tbr->index + length; |
5562 | } | |
5563 | ||
b0da69a7 | 5564 | |
9a22a004 JB |
5565 | /* Function set as reader function when reading PNG image from a file. |
5566 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5567 | bytes from the input to DATA. */ | |
5568 | ||
5569 | static void | |
d3da34e0 | 5570 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5571 | { |
5572 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5573 | ||
5574 | if (fread (data, 1, length, fp) < length) | |
5575 | fn_png_error (png_ptr, "Read error"); | |
5576 | } | |
5577 | ||
5578 | ||
578098f3 | 5579 | /* Load PNG image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
5580 | successful. */ |
5581 | ||
40bce90b PE |
5582 | struct png_load_context |
5583 | { | |
0328b6de | 5584 | /* These are members so that longjmp doesn't munge local variables. */ |
40bce90b PE |
5585 | png_struct *png_ptr; |
5586 | png_info *info_ptr; | |
5587 | png_info *end_info; | |
5588 | FILE *fp; | |
5589 | png_byte *pixels; | |
5590 | png_byte **rows; | |
5591 | }; | |
5592 | ||
578098f3 | 5593 | static bool |
40bce90b | 5594 | png_load_body (struct frame *f, struct image *img, struct png_load_context *c) |
4ef0d4d0 KS |
5595 | { |
5596 | Lisp_Object file, specified_file; | |
5597 | Lisp_Object specified_data; | |
5adf60bc PE |
5598 | int x, y; |
5599 | ptrdiff_t i; | |
4ef0d4d0 | 5600 | XImagePtr ximg, mask_img = NULL; |
40bce90b | 5601 | png_struct *png_ptr; |
4ef0d4d0 | 5602 | png_info *info_ptr = NULL, *end_info = NULL; |
40bce90b | 5603 | FILE *fp = NULL; |
4ef0d4d0 | 5604 | png_byte sig[8]; |
40bce90b PE |
5605 | png_byte *pixels = NULL; |
5606 | png_byte **rows = NULL; | |
4ef0d4d0 KS |
5607 | png_uint_32 width, height; |
5608 | int bit_depth, color_type, interlace_type; | |
5609 | png_byte channels; | |
5610 | png_uint_32 row_bytes; | |
578098f3 | 5611 | bool transparent_p; |
4ef0d4d0 KS |
5612 | struct png_memory_storage tbr; /* Data to be read */ |
5613 | ||
5614 | /* Find out what file to load. */ | |
5615 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5616 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5617 | |
5618 | if (NILP (specified_data)) | |
5619 | { | |
5620 | file = x_find_image_file (specified_file); | |
5621 | if (!STRINGP (file)) | |
5622 | { | |
5623 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5624 | return 0; |
5625 | } | |
5626 | ||
5627 | /* Open the image file. */ | |
42a5b22f | 5628 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5629 | if (!fp) |
5630 | { | |
5631 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5632 | return 0; |
5633 | } | |
5634 | ||
5635 | /* Check PNG signature. */ | |
5636 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5637 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5638 | { |
5639 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5640 | fclose (fp); |
5641 | return 0; | |
5642 | } | |
5643 | } | |
5644 | else | |
5645 | { | |
7574650a AS |
5646 | if (!STRINGP (specified_data)) |
5647 | { | |
5648 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5649 | return 0; | |
5650 | } | |
5651 | ||
4ef0d4d0 KS |
5652 | /* Read from memory. */ |
5653 | tbr.bytes = SDATA (specified_data); | |
5654 | tbr.len = SBYTES (specified_data); | |
5655 | tbr.index = 0; | |
5656 | ||
5657 | /* Check PNG signature. */ | |
5658 | if (tbr.len < sizeof sig | |
285d07e2 | 5659 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5660 | { |
5661 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5662 | return 0; |
5663 | } | |
5664 | ||
5665 | /* Need to skip past the signature. */ | |
5666 | tbr.bytes += sizeof (sig); | |
5667 | } | |
5668 | ||
df61c790 AS |
5669 | /* Initialize read and info structs for PNG lib. */ |
5670 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5671 | NULL, my_png_error, | |
5672 | my_png_warning); | |
40bce90b | 5673 | if (png_ptr) |
4ef0d4d0 | 5674 | { |
40bce90b PE |
5675 | info_ptr = fn_png_create_info_struct (png_ptr); |
5676 | end_info = fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
5677 | } |
5678 | ||
40bce90b PE |
5679 | c->png_ptr = png_ptr; |
5680 | c->info_ptr = info_ptr; | |
5681 | c->end_info = end_info; | |
5682 | c->fp = fp; | |
5683 | c->pixels = pixels; | |
5684 | c->rows = rows; | |
5685 | ||
5686 | if (! (info_ptr && end_info)) | |
4ef0d4d0 | 5687 | { |
40bce90b PE |
5688 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
5689 | png_ptr = 0; | |
4ef0d4d0 | 5690 | } |
40bce90b | 5691 | if (! png_ptr) |
4ef0d4d0 | 5692 | { |
4ef0d4d0 | 5693 | if (fp) fclose (fp); |
4ef0d4d0 KS |
5694 | return 0; |
5695 | } | |
5696 | ||
5697 | /* Set error jump-back. We come back here when the PNG library | |
5698 | detects an error. */ | |
af26b72c | 5699 | if (_setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5700 | { |
5701 | error: | |
40bce90b PE |
5702 | if (c->png_ptr) |
5703 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); | |
5704 | xfree (c->pixels); | |
5705 | xfree (c->rows); | |
5706 | if (c->fp) | |
5707 | fclose (c->fp); | |
4ef0d4d0 KS |
5708 | return 0; |
5709 | } | |
5710 | ||
40bce90b PE |
5711 | /* Silence a bogus diagnostic; see GCC bug 54561. */ |
5712 | IF_LINT (fp = c->fp); | |
5713 | ||
4ef0d4d0 KS |
5714 | /* Read image info. */ |
5715 | if (!NILP (specified_data)) | |
5716 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5717 | else | |
9a22a004 | 5718 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5719 | |
5720 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5721 | fn_png_read_info (png_ptr, info_ptr); | |
5722 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5723 | &interlace_type, NULL, NULL); | |
5724 | ||
3f791afe PE |
5725 | if (! (width <= INT_MAX && height <= INT_MAX |
5726 | && check_image_size (f, width, height))) | |
10ea2b82 JR |
5727 | { |
5728 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5729 | goto error; | |
5730 | } | |
ca4aa935 PE |
5731 | |
5732 | /* Create the X image and pixmap now, so that the work below can be | |
5733 | omitted if the image is too large for X. */ | |
5734 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5735 | &img->pixmap)) | |
5736 | goto error; | |
5737 | ||
4ef0d4d0 KS |
5738 | /* If image contains simply transparency data, we prefer to |
5739 | construct a clipping mask. */ | |
5740 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5741 | transparent_p = 1; | |
5742 | else | |
5743 | transparent_p = 0; | |
5744 | ||
5745 | /* This function is easier to write if we only have to handle | |
5746 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5747 | transform other formats into that format. */ | |
5748 | ||
5749 | /* Strip more than 8 bits per channel. */ | |
5750 | if (bit_depth == 16) | |
5751 | fn_png_set_strip_16 (png_ptr); | |
5752 | ||
5753 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5754 | if available. */ | |
5755 | fn_png_set_expand (png_ptr); | |
5756 | ||
5757 | /* Convert grayscale images to RGB. */ | |
5758 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5759 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5760 | fn_png_set_gray_to_rgb (png_ptr); | |
5761 | ||
4ef0d4d0 KS |
5762 | /* Handle alpha channel by combining the image with a background |
5763 | color. Do this only if a real alpha channel is supplied. For | |
5764 | simple transparency, we prefer a clipping mask. */ | |
5765 | if (!transparent_p) | |
5766 | { | |
917ac1a9 | 5767 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5768 | Lisp_Object specified_bg |
5769 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5770 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5771 | |
5772 | if (STRINGP (specified_bg)) | |
5773 | /* The user specified `:background', use that. */ | |
5774 | { | |
4ef0d4d0 | 5775 | XColor color; |
42a5b22f | 5776 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5777 | { |
5778 | png_color_16 user_bg; | |
5779 | ||
72af86bd | 5780 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5781 | user_bg.red = color.red >> shift; |
5782 | user_bg.green = color.green >> shift; | |
5783 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5784 | |
5785 | fn_png_set_background (png_ptr, &user_bg, | |
5786 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5787 | } | |
5788 | } | |
4ef0d4d0 KS |
5789 | else |
5790 | { | |
c4f13f44 CY |
5791 | /* We use the current frame background, ignoring any default |
5792 | background color set by the image. */ | |
8b7d0a16 | 5793 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5794 | XColor color; |
5795 | png_color_16 frame_background; | |
5796 | ||
5797 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5798 | x_query_color (f, &color); | |
5799 | ||
72af86bd | 5800 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5801 | frame_background.red = color.red >> shift; |
5802 | frame_background.green = color.green >> shift; | |
5803 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5804 | #endif /* HAVE_X_WINDOWS */ |
5805 | ||
4ef0d4d0 KS |
5806 | fn_png_set_background (png_ptr, &frame_background, |
5807 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5808 | } | |
5809 | } | |
5810 | ||
5811 | /* Update info structure. */ | |
5812 | fn_png_read_update_info (png_ptr, info_ptr); | |
5813 | ||
5814 | /* Get number of channels. Valid values are 1 for grayscale images | |
5815 | and images with a palette, 2 for grayscale images with transparency | |
5816 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5817 | images with alpha channel, i.e. RGBA. If conversions above were | |
5818 | sufficient we should only have 3 or 4 channels here. */ | |
5819 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
a54e2c05 | 5820 | eassert (channels == 3 || channels == 4); |
4ef0d4d0 KS |
5821 | |
5822 | /* Number of bytes needed for one row of the image. */ | |
5823 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5824 | ||
5825 | /* Allocate memory for the image. */ | |
3f791afe PE |
5826 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height |
5827 | || min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes) | |
5828 | memory_full (SIZE_MAX); | |
40bce90b PE |
5829 | c->pixels = pixels = xmalloc (sizeof *pixels * row_bytes * height); |
5830 | c->rows = rows = xmalloc (height * sizeof *rows); | |
4ef0d4d0 KS |
5831 | for (i = 0; i < height; ++i) |
5832 | rows[i] = pixels + i * row_bytes; | |
5833 | ||
5834 | /* Read the entire image. */ | |
5835 | fn_png_read_image (png_ptr, rows); | |
5836 | fn_png_read_end (png_ptr, info_ptr); | |
5837 | if (fp) | |
5838 | { | |
5839 | fclose (fp); | |
40bce90b | 5840 | c->fp = NULL; |
4ef0d4d0 KS |
5841 | } |
5842 | ||
4ef0d4d0 KS |
5843 | /* Create an image and pixmap serving as mask if the PNG image |
5844 | contains an alpha channel. */ | |
5845 | if (channels == 4 | |
5846 | && !transparent_p | |
5847 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5848 | &mask_img, &img->mask)) | |
5849 | { | |
5850 | x_destroy_x_image (ximg); | |
5851 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5852 | img->pixmap = NO_PIXMAP; | |
5853 | goto error; | |
5854 | } | |
5855 | ||
5856 | /* Fill the X image and mask from PNG data. */ | |
5857 | init_color_table (); | |
5858 | ||
5859 | for (y = 0; y < height; ++y) | |
5860 | { | |
5861 | png_byte *p = rows[y]; | |
5862 | ||
5863 | for (x = 0; x < width; ++x) | |
5864 | { | |
13464394 | 5865 | int r, g, b; |
4ef0d4d0 KS |
5866 | |
5867 | r = *p++ << 8; | |
5868 | g = *p++ << 8; | |
5869 | b = *p++ << 8; | |
5870 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5871 | /* An alpha channel, aka mask channel, associates variable | |
5872 | transparency with an image. Where other image formats | |
5873 | support binary transparency---fully transparent or fully | |
5874 | opaque---PNG allows up to 254 levels of partial transparency. | |
5875 | The PNG library implements partial transparency by combining | |
5876 | the image with a specified background color. | |
5877 | ||
5878 | I'm not sure how to handle this here nicely: because the | |
5879 | background on which the image is displayed may change, for | |
5880 | real alpha channel support, it would be necessary to create | |
5881 | a new image for each possible background. | |
5882 | ||
5883 | What I'm doing now is that a mask is created if we have | |
5884 | boolean transparency information. Otherwise I'm using | |
5885 | the frame's background color to combine the image with. */ | |
5886 | ||
5887 | if (channels == 4) | |
5888 | { | |
5889 | if (mask_img) | |
9ecf6403 | 5890 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5891 | ++p; |
5892 | } | |
5893 | } | |
5894 | } | |
5895 | ||
5896 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5897 | /* Set IMG's background color from the PNG image, unless the user | |
5898 | overrode it. */ | |
5899 | { | |
5900 | png_color_16 *bg; | |
5901 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5902 | { | |
5903 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5904 | img->background_valid = 1; | |
5905 | } | |
5906 | } | |
5907 | ||
5908 | #ifdef COLOR_TABLE_SUPPORT | |
5909 | /* Remember colors allocated for this image. */ | |
5910 | img->colors = colors_in_color_table (&img->ncolors); | |
5911 | free_color_table (); | |
5912 | #endif /* COLOR_TABLE_SUPPORT */ | |
5913 | ||
5914 | /* Clean up. */ | |
40bce90b | 5915 | fn_png_destroy_read_struct (&c->png_ptr, &c->info_ptr, &c->end_info); |
4ef0d4d0 KS |
5916 | xfree (rows); |
5917 | xfree (pixels); | |
5918 | ||
5919 | img->width = width; | |
5920 | img->height = height; | |
5921 | ||
2e09fef1 EZ |
5922 | /* Maybe fill in the background field while we have ximg handy. |
5923 | Casting avoids a GCC warning. */ | |
5924 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5925 | |
5926 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5927 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5928 | x_destroy_x_image (ximg); | |
5929 | ||
5930 | /* Same for the mask. */ | |
5931 | if (mask_img) | |
5932 | { | |
2e09fef1 EZ |
5933 | /* Fill in the background_transparent field while we have the |
5934 | mask handy. Casting avoids a GCC warning. */ | |
5935 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5936 | |
5937 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5938 | x_destroy_x_image (mask_img); | |
5939 | } | |
5940 | ||
4ef0d4d0 KS |
5941 | return 1; |
5942 | } | |
5943 | ||
578098f3 | 5944 | static bool |
40bce90b PE |
5945 | png_load (struct frame *f, struct image *img) |
5946 | { | |
5947 | struct png_load_context c; | |
5948 | return png_load_body (f, img, &c); | |
5949 | } | |
5950 | ||
4ef0d4d0 KS |
5951 | #else /* HAVE_PNG */ |
5952 | ||
edfda783 | 5953 | #ifdef HAVE_NS |
578098f3 | 5954 | static bool |
edfda783 AR |
5955 | png_load (struct frame *f, struct image *img) |
5956 | { | |
5e617bc2 JB |
5957 | return ns_load_image (f, img, |
5958 | image_spec_value (img->spec, QCfile, NULL), | |
5959 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
5960 | } |
5961 | #endif /* HAVE_NS */ | |
5962 | ||
5963 | ||
4ef0d4d0 KS |
5964 | #endif /* !HAVE_PNG */ |
5965 | ||
5966 | ||
5967 | \f | |
5968 | /*********************************************************************** | |
5969 | JPEG | |
5970 | ***********************************************************************/ | |
5971 | ||
9e2a2647 | 5972 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5973 | |
578098f3 PE |
5974 | static bool jpeg_image_p (Lisp_Object object); |
5975 | static bool jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5976 | |
5977 | /* The symbol `jpeg' identifying images of this type. */ | |
5978 | ||
955cbe7b | 5979 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
5980 | |
5981 | /* Indices of image specification fields in gs_format, below. */ | |
5982 | ||
5983 | enum jpeg_keyword_index | |
5984 | { | |
5985 | JPEG_TYPE, | |
5986 | JPEG_DATA, | |
5987 | JPEG_FILE, | |
5988 | JPEG_ASCENT, | |
5989 | JPEG_MARGIN, | |
5990 | JPEG_RELIEF, | |
5991 | JPEG_ALGORITHM, | |
5992 | JPEG_HEURISTIC_MASK, | |
5993 | JPEG_MASK, | |
5994 | JPEG_BACKGROUND, | |
5995 | JPEG_LAST | |
5996 | }; | |
5997 | ||
5998 | /* Vector of image_keyword structures describing the format | |
5999 | of valid user-defined image specifications. */ | |
6000 | ||
91433552 | 6001 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
6002 | { |
6003 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6004 | {":data", IMAGE_STRING_VALUE, 0}, | |
6005 | {":file", IMAGE_STRING_VALUE, 0}, | |
6006 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6007 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6008 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6009 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6010 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6011 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6012 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6013 | }; | |
6014 | ||
a9e7a9d5 | 6015 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 6016 | static bool init_jpeg_functions (void); |
bb4d86b4 CY |
6017 | #else |
6018 | #define init_jpeg_functions NULL | |
6019 | #endif | |
6020 | ||
4ef0d4d0 KS |
6021 | /* Structure describing the image type `jpeg'. */ |
6022 | ||
6023 | static struct image_type jpeg_type = | |
6024 | { | |
6025 | &Qjpeg, | |
6026 | jpeg_image_p, | |
6027 | jpeg_load, | |
6028 | x_clear_image, | |
bb4d86b4 | 6029 | init_jpeg_functions, |
4ef0d4d0 KS |
6030 | NULL |
6031 | }; | |
6032 | ||
578098f3 | 6033 | /* Return true if OBJECT is a valid JPEG image specification. */ |
4ef0d4d0 | 6034 | |
578098f3 | 6035 | static bool |
d3da34e0 | 6036 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6037 | { |
6038 | struct image_keyword fmt[JPEG_LAST]; | |
6039 | ||
72af86bd | 6040 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
6041 | |
6042 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6043 | return 0; | |
6044 | ||
6045 | /* Must specify either the :data or :file keyword. */ | |
6046 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6047 | } | |
6048 | ||
9e2a2647 | 6049 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6050 | |
6051 | #ifdef HAVE_JPEG | |
6052 | ||
6053 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6054 | jconfig.h. */ | |
6055 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6056 | #undef HAVE_STDLIB_H |
6057 | #endif /* HAVE_STLIB_H */ | |
6058 | ||
66354420 | 6059 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6060 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6061 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6062 | #define __WIN32__ 1 |
6063 | #endif | |
6064 | ||
93aa5c81 DC |
6065 | /* rpcndr.h (via windows.h) and jpeglib.h both define boolean types. |
6066 | Some versions of jpeglib try to detect whether rpcndr.h is loaded, | |
6067 | using the Windows boolean type instead of the jpeglib boolean type | |
6068 | if so. Cygwin jpeglib, however, doesn't try to detect whether its | |
6069 | headers are included along with windows.h, so under Cygwin, jpeglib | |
6070 | attempts to define a conflicting boolean type. Worse, forcing | |
6071 | Cygwin jpeglib headers to use the Windows boolean type doesn't work | |
6072 | because it created an ABI incompatibility between the | |
6073 | already-compiled jpeg library and the header interface definition. | |
6074 | ||
6075 | The best we can do is to define jpeglib's boolean type to a | |
6076 | different name. This name, jpeg_boolean, remains in effect through | |
6077 | the rest of image.c. | |
6078 | */ | |
a9e7a9d5 | 6079 | #if defined CYGWIN && defined HAVE_NTGUI |
0fda9b75 | 6080 | #define boolean jpeg_boolean |
2ae3a8a7 | 6081 | #endif |
4ef0d4d0 KS |
6082 | #include <jpeglib.h> |
6083 | #include <jerror.h> | |
4ef0d4d0 | 6084 | |
0fda9b75 | 6085 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6086 | |
6087 | /* JPEG library details. */ | |
14beddf4 CY |
6088 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6089 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6090 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6091 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6092 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6093 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6094 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6095 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 | 6096 | |
578098f3 | 6097 | static bool |
d07ff9db | 6098 | init_jpeg_functions (void) |
4ef0d4d0 KS |
6099 | { |
6100 | HMODULE library; | |
6101 | ||
d07ff9db | 6102 | if (!(library = w32_delayed_load (Qjpeg))) |
4ef0d4d0 KS |
6103 | return 0; |
6104 | ||
6105 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6106 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6107 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6108 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6109 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6110 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6111 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6112 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6113 | return 1; | |
6114 | } | |
6115 | ||
6116 | /* Wrapper since we can't directly assign the function pointer | |
6117 | to another function pointer that was declared more completely easily. */ | |
6118 | static boolean | |
7c3320d8 | 6119 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6120 | { |
6121 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6122 | } | |
6123 | ||
6124 | #else | |
6125 | ||
5e617bc2 | 6126 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress (a) |
4ef0d4d0 KS |
6127 | #define fn_jpeg_start_decompress jpeg_start_decompress |
6128 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6129 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6130 | #define fn_jpeg_read_header jpeg_read_header | |
6131 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6132 | #define fn_jpeg_std_error jpeg_std_error |
6133 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6134 | ||
0fda9b75 | 6135 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6136 | |
6137 | struct my_jpeg_error_mgr | |
6138 | { | |
6139 | struct jpeg_error_mgr pub; | |
0328b6de | 6140 | sys_jmp_buf setjmp_buffer; |
40bce90b | 6141 | |
0328b6de | 6142 | /* The remaining members are so that longjmp doesn't munge local |
40bce90b PE |
6143 | variables. */ |
6144 | struct jpeg_decompress_struct cinfo; | |
6145 | enum | |
6146 | { | |
6147 | MY_JPEG_ERROR_EXIT, | |
6148 | MY_JPEG_INVALID_IMAGE_SIZE, | |
6149 | MY_JPEG_CANNOT_CREATE_X | |
6150 | } failure_code; | |
5f0cb45a PE |
6151 | #ifdef lint |
6152 | FILE *fp; | |
6153 | #endif | |
4ef0d4d0 KS |
6154 | }; |
6155 | ||
6156 | ||
845ca893 | 6157 | static _Noreturn void |
d3da34e0 | 6158 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6159 | { |
6160 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
40bce90b | 6161 | mgr->failure_code = MY_JPEG_ERROR_EXIT; |
0328b6de | 6162 | sys_longjmp (mgr->setjmp_buffer, 1); |
4ef0d4d0 KS |
6163 | } |
6164 | ||
6165 | ||
6166 | /* Init source method for JPEG data source manager. Called by | |
6167 | jpeg_read_header() before any data is actually read. See | |
6168 | libjpeg.doc from the JPEG lib distribution. */ | |
6169 | ||
6170 | static void | |
d3da34e0 | 6171 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6172 | { |
6173 | } | |
6174 | ||
6175 | ||
6176 | /* Method to terminate data source. Called by | |
6177 | jpeg_finish_decompress() after all data has been processed. */ | |
6178 | ||
6179 | static void | |
d3da34e0 | 6180 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6181 | { |
6182 | } | |
6183 | ||
6184 | ||
6185 | /* Fill input buffer method for JPEG data source manager. Called | |
6186 | whenever more data is needed. We read the whole image in one step, | |
6187 | so this only adds a fake end of input marker at the end. */ | |
6188 | ||
5a1539f3 | 6189 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6190 | |
4ef0d4d0 | 6191 | static boolean |
d3da34e0 | 6192 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6193 | { |
6194 | /* Insert a fake EOI marker. */ | |
6195 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6196 | |
5a1539f3 MB |
6197 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6198 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6199 | |
5a1539f3 | 6200 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6201 | src->bytes_in_buffer = 2; |
e0e30823 | 6202 | return 1; |
4ef0d4d0 KS |
6203 | } |
6204 | ||
6205 | ||
6206 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6207 | is the JPEG data source manager. */ | |
6208 | ||
6209 | static void | |
d3da34e0 | 6210 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6211 | { |
6212 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6213 | ||
6214 | if (src) | |
6215 | { | |
6216 | if (num_bytes > src->bytes_in_buffer) | |
6217 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6218 | ||
6219 | src->bytes_in_buffer -= num_bytes; | |
6220 | src->next_input_byte += num_bytes; | |
6221 | } | |
6222 | } | |
6223 | ||
6224 | ||
4ef0d4d0 KS |
6225 | /* Set up the JPEG lib for reading an image from DATA which contains |
6226 | LEN bytes. CINFO is the decompression info structure created for | |
6227 | reading the image. */ | |
6228 | ||
6229 | static void | |
92547ff9 | 6230 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, ptrdiff_t len) |
4ef0d4d0 KS |
6231 | { |
6232 | struct jpeg_source_mgr *src; | |
6233 | ||
6234 | if (cinfo->src == NULL) | |
6235 | { | |
6236 | /* First time for this JPEG object? */ | |
6237 | cinfo->src = (struct jpeg_source_mgr *) | |
6238 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6239 | sizeof (struct jpeg_source_mgr)); | |
6240 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6241 | src->next_input_byte = data; | |
6242 | } | |
6243 | ||
6244 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6245 | src->init_source = our_common_init_source; |
6246 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6247 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6248 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6249 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6250 | src->bytes_in_buffer = len; |
6251 | src->next_input_byte = data; | |
6252 | } | |
6253 | ||
6254 | ||
b25a72ab JB |
6255 | struct jpeg_stdio_mgr |
6256 | { | |
6257 | struct jpeg_source_mgr mgr; | |
6258 | boolean finished; | |
6259 | FILE *file; | |
6260 | JOCTET *buffer; | |
6261 | }; | |
6262 | ||
6263 | ||
6264 | /* Size of buffer to read JPEG from file. | |
6265 | Not too big, as we want to use alloc_small. */ | |
6266 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6267 | ||
6268 | ||
6269 | /* Fill input buffer method for JPEG data source manager. Called | |
6270 | whenever more data is needed. The data is read from a FILE *. */ | |
6271 | ||
6272 | static boolean | |
d3da34e0 | 6273 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6274 | { |
6275 | struct jpeg_stdio_mgr *src; | |
6276 | ||
6277 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6278 | if (!src->finished) | |
6279 | { | |
3f791afe | 6280 | ptrdiff_t bytes; |
b25a72ab JB |
6281 | |
6282 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6283 | if (bytes > 0) | |
6284 | src->mgr.bytes_in_buffer = bytes; | |
6285 | else | |
6286 | { | |
6287 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6288 | src->finished = 1; | |
6289 | src->buffer[0] = (JOCTET) 0xFF; | |
6290 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6291 | src->mgr.bytes_in_buffer = 2; | |
6292 | } | |
6293 | src->mgr.next_input_byte = src->buffer; | |
6294 | } | |
6295 | ||
6296 | return 1; | |
6297 | } | |
6298 | ||
6299 | ||
6300 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6301 | is the JPEG data source manager. */ | |
6302 | ||
6303 | static void | |
d3da34e0 | 6304 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6305 | { |
6306 | struct jpeg_stdio_mgr *src; | |
6307 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6308 | ||
6309 | while (num_bytes > 0 && !src->finished) | |
6310 | { | |
6311 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6312 | { | |
6313 | src->mgr.bytes_in_buffer -= num_bytes; | |
6314 | src->mgr.next_input_byte += num_bytes; | |
6315 | break; | |
6316 | } | |
6317 | else | |
6318 | { | |
6319 | num_bytes -= src->mgr.bytes_in_buffer; | |
6320 | src->mgr.bytes_in_buffer = 0; | |
6321 | src->mgr.next_input_byte = NULL; | |
6322 | ||
6323 | our_stdio_fill_input_buffer (cinfo); | |
6324 | } | |
6325 | } | |
6326 | } | |
6327 | ||
6328 | ||
6329 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6330 | CINFO is the decompression info structure created for | |
6331 | reading the image. */ | |
6332 | ||
6333 | static void | |
d3da34e0 | 6334 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6335 | { |
6336 | struct jpeg_stdio_mgr *src; | |
6337 | ||
6338 | if (cinfo->src != NULL) | |
6339 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6340 | else | |
6341 | { | |
6342 | /* First time for this JPEG object? */ | |
6343 | cinfo->src = (struct jpeg_source_mgr *) | |
6344 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6345 | sizeof (struct jpeg_stdio_mgr)); | |
6346 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6347 | src->buffer = (JOCTET *) | |
6348 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6349 | JPEG_STDIO_BUFFER_SIZE); | |
6350 | } | |
6351 | ||
6352 | src->file = fp; | |
6353 | src->finished = 0; | |
6354 | src->mgr.init_source = our_common_init_source; | |
6355 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6356 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6357 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6358 | src->mgr.term_source = our_common_term_source; | |
6359 | src->mgr.bytes_in_buffer = 0; | |
6360 | src->mgr.next_input_byte = NULL; | |
6361 | } | |
6362 | ||
6363 | ||
4ef0d4d0 KS |
6364 | /* Load image IMG for use on frame F. Patterned after example.c |
6365 | from the JPEG lib. */ | |
6366 | ||
578098f3 | 6367 | static bool |
40bce90b PE |
6368 | jpeg_load_body (struct frame *f, struct image *img, |
6369 | struct my_jpeg_error_mgr *mgr) | |
4ef0d4d0 | 6370 | { |
4ef0d4d0 KS |
6371 | Lisp_Object file, specified_file; |
6372 | Lisp_Object specified_data; | |
40bce90b | 6373 | FILE *fp = NULL; |
4ef0d4d0 KS |
6374 | JSAMPARRAY buffer; |
6375 | int row_stride, x, y; | |
6376 | XImagePtr ximg = NULL; | |
4ef0d4d0 KS |
6377 | unsigned long *colors; |
6378 | int width, height; | |
4ef0d4d0 KS |
6379 | |
6380 | /* Open the JPEG file. */ | |
6381 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6382 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6383 | |
6384 | if (NILP (specified_data)) | |
6385 | { | |
6386 | file = x_find_image_file (specified_file); | |
6387 | if (!STRINGP (file)) | |
6388 | { | |
6389 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6390 | return 0; |
6391 | } | |
6392 | ||
42a5b22f | 6393 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6394 | if (fp == NULL) |
6395 | { | |
6396 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6397 | return 0; |
6398 | } | |
6399 | } | |
7574650a AS |
6400 | else if (!STRINGP (specified_data)) |
6401 | { | |
6402 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6403 | return 0; | |
6404 | } | |
4ef0d4d0 | 6405 | |
5f0cb45a PE |
6406 | IF_LINT (mgr->fp = fp); |
6407 | ||
4ef0d4d0 | 6408 | /* Customize libjpeg's error handling to call my_error_exit when an |
df61c790 | 6409 | error is detected. This function will perform a longjmp. */ |
40bce90b PE |
6410 | mgr->cinfo.err = fn_jpeg_std_error (&mgr->pub); |
6411 | mgr->pub.error_exit = my_error_exit; | |
0328b6de | 6412 | if (sys_setjmp (mgr->setjmp_buffer)) |
4ef0d4d0 | 6413 | { |
40bce90b | 6414 | switch (mgr->failure_code) |
4ef0d4d0 | 6415 | { |
40bce90b PE |
6416 | case MY_JPEG_ERROR_EXIT: |
6417 | { | |
6418 | char buf[JMSG_LENGTH_MAX]; | |
6419 | mgr->cinfo.err->format_message ((j_common_ptr) &mgr->cinfo, buf); | |
6420 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
6421 | build_string (buf)); | |
6422 | break; | |
6423 | } | |
6424 | ||
6425 | case MY_JPEG_INVALID_IMAGE_SIZE: | |
6426 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
6427 | break; | |
6428 | ||
6429 | case MY_JPEG_CANNOT_CREATE_X: | |
6430 | break; | |
4ef0d4d0 KS |
6431 | } |
6432 | ||
6433 | /* Close the input file and destroy the JPEG object. */ | |
6434 | if (fp) | |
40bce90b PE |
6435 | fclose (fp); |
6436 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 KS |
6437 | |
6438 | /* If we already have an XImage, free that. */ | |
6439 | x_destroy_x_image (ximg); | |
6440 | ||
6441 | /* Free pixmap and colors. */ | |
6442 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6443 | return 0; |
6444 | } | |
6445 | ||
5f0cb45a PE |
6446 | /* Silence a bogus diagnostic; see GCC bug 54561. */ |
6447 | IF_LINT (fp = mgr->fp); | |
6448 | ||
4ef0d4d0 KS |
6449 | /* Create the JPEG decompression object. Let it read from fp. |
6450 | Read the JPEG image header. */ | |
40bce90b | 6451 | fn_jpeg_CreateDecompress (&mgr->cinfo, JPEG_LIB_VERSION, sizeof *&mgr->cinfo); |
4ef0d4d0 KS |
6452 | |
6453 | if (NILP (specified_data)) | |
40bce90b | 6454 | jpeg_file_src (&mgr->cinfo, fp); |
4ef0d4d0 | 6455 | else |
40bce90b | 6456 | jpeg_memory_src (&mgr->cinfo, SDATA (specified_data), |
4ef0d4d0 KS |
6457 | SBYTES (specified_data)); |
6458 | ||
40bce90b | 6459 | fn_jpeg_read_header (&mgr->cinfo, 1); |
4ef0d4d0 KS |
6460 | |
6461 | /* Customize decompression so that color quantization will be used. | |
6462 | Start decompression. */ | |
40bce90b PE |
6463 | mgr->cinfo.quantize_colors = 1; |
6464 | fn_jpeg_start_decompress (&mgr->cinfo); | |
6465 | width = img->width = mgr->cinfo.output_width; | |
6466 | height = img->height = mgr->cinfo.output_height; | |
4ef0d4d0 | 6467 | |
f1f25b99 CY |
6468 | if (!check_image_size (f, width, height)) |
6469 | { | |
40bce90b | 6470 | mgr->failure_code = MY_JPEG_INVALID_IMAGE_SIZE; |
0328b6de | 6471 | sys_longjmp (mgr->setjmp_buffer, 1); |
f1f25b99 CY |
6472 | } |
6473 | ||
4ef0d4d0 KS |
6474 | /* Create X image and pixmap. */ |
6475 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
40bce90b PE |
6476 | { |
6477 | mgr->failure_code = MY_JPEG_CANNOT_CREATE_X; | |
0328b6de | 6478 | sys_longjmp (mgr->setjmp_buffer, 1); |
40bce90b | 6479 | } |
4ef0d4d0 KS |
6480 | |
6481 | /* Allocate colors. When color quantization is used, | |
40bce90b PE |
6482 | mgr->cinfo.actual_number_of_colors has been set with the number of |
6483 | colors generated, and mgr->cinfo.colormap is a two-dimensional array | |
6484 | of color indices in the range 0..mgr->cinfo.actual_number_of_colors. | |
4ef0d4d0 KS |
6485 | No more than 255 colors will be generated. */ |
6486 | { | |
6487 | int i, ir, ig, ib; | |
6488 | ||
40bce90b | 6489 | if (mgr->cinfo.out_color_components > 2) |
4ef0d4d0 | 6490 | ir = 0, ig = 1, ib = 2; |
40bce90b | 6491 | else if (mgr->cinfo.out_color_components > 1) |
4ef0d4d0 KS |
6492 | ir = 0, ig = 1, ib = 0; |
6493 | else | |
6494 | ir = 0, ig = 0, ib = 0; | |
6495 | ||
6496 | /* Use the color table mechanism because it handles colors that | |
6497 | cannot be allocated nicely. Such colors will be replaced with | |
6498 | a default color, and we don't have to care about which colors | |
6499 | can be freed safely, and which can't. */ | |
6500 | init_color_table (); | |
40bce90b | 6501 | colors = alloca (mgr->cinfo.actual_number_of_colors * sizeof *colors); |
4ef0d4d0 | 6502 | |
40bce90b | 6503 | for (i = 0; i < mgr->cinfo.actual_number_of_colors; ++i) |
4ef0d4d0 KS |
6504 | { |
6505 | /* Multiply RGB values with 255 because X expects RGB values | |
6506 | in the range 0..0xffff. */ | |
40bce90b PE |
6507 | int r = mgr->cinfo.colormap[ir][i] << 8; |
6508 | int g = mgr->cinfo.colormap[ig][i] << 8; | |
6509 | int b = mgr->cinfo.colormap[ib][i] << 8; | |
4ef0d4d0 KS |
6510 | colors[i] = lookup_rgb_color (f, r, g, b); |
6511 | } | |
6512 | ||
6513 | #ifdef COLOR_TABLE_SUPPORT | |
6514 | /* Remember those colors actually allocated. */ | |
6515 | img->colors = colors_in_color_table (&img->ncolors); | |
6516 | free_color_table (); | |
6517 | #endif /* COLOR_TABLE_SUPPORT */ | |
6518 | } | |
6519 | ||
6520 | /* Read pixels. */ | |
40bce90b PE |
6521 | row_stride = width * mgr->cinfo.output_components; |
6522 | buffer = mgr->cinfo.mem->alloc_sarray ((j_common_ptr) &mgr->cinfo, | |
6523 | JPOOL_IMAGE, row_stride, 1); | |
4ef0d4d0 KS |
6524 | for (y = 0; y < height; ++y) |
6525 | { | |
40bce90b PE |
6526 | fn_jpeg_read_scanlines (&mgr->cinfo, buffer, 1); |
6527 | for (x = 0; x < mgr->cinfo.output_width; ++x) | |
4ef0d4d0 KS |
6528 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); |
6529 | } | |
6530 | ||
6531 | /* Clean up. */ | |
40bce90b PE |
6532 | fn_jpeg_finish_decompress (&mgr->cinfo); |
6533 | fn_jpeg_destroy_decompress (&mgr->cinfo); | |
4ef0d4d0 | 6534 | if (fp) |
40bce90b | 6535 | fclose (fp); |
4ef0d4d0 KS |
6536 | |
6537 | /* Maybe fill in the background field while we have ximg handy. */ | |
6538 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6539 | /* Casting avoids a GCC warning. */ |
6540 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6541 | |
6542 | /* Put the image into the pixmap. */ | |
6543 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6544 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6545 | return 1; |
6546 | } | |
6547 | ||
578098f3 | 6548 | static bool |
40bce90b PE |
6549 | jpeg_load (struct frame *f, struct image *img) |
6550 | { | |
6551 | struct my_jpeg_error_mgr mgr; | |
6552 | return jpeg_load_body (f, img, &mgr); | |
6553 | } | |
6554 | ||
4ef0d4d0 KS |
6555 | #else /* HAVE_JPEG */ |
6556 | ||
edfda783 | 6557 | #ifdef HAVE_NS |
578098f3 | 6558 | static bool |
edfda783 AR |
6559 | jpeg_load (struct frame *f, struct image *img) |
6560 | { | |
ed3751c8 JB |
6561 | return ns_load_image (f, img, |
6562 | image_spec_value (img->spec, QCfile, NULL), | |
6563 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6564 | } |
6565 | #endif /* HAVE_NS */ | |
6566 | ||
4ef0d4d0 KS |
6567 | #endif /* !HAVE_JPEG */ |
6568 | ||
6569 | ||
6570 | \f | |
6571 | /*********************************************************************** | |
6572 | TIFF | |
6573 | ***********************************************************************/ | |
6574 | ||
9e2a2647 | 6575 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6576 | |
578098f3 PE |
6577 | static bool tiff_image_p (Lisp_Object object); |
6578 | static bool tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6579 | |
6580 | /* The symbol `tiff' identifying images of this type. */ | |
6581 | ||
955cbe7b | 6582 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6583 | |
6584 | /* Indices of image specification fields in tiff_format, below. */ | |
6585 | ||
6586 | enum tiff_keyword_index | |
6587 | { | |
6588 | TIFF_TYPE, | |
6589 | TIFF_DATA, | |
6590 | TIFF_FILE, | |
6591 | TIFF_ASCENT, | |
6592 | TIFF_MARGIN, | |
6593 | TIFF_RELIEF, | |
6594 | TIFF_ALGORITHM, | |
6595 | TIFF_HEURISTIC_MASK, | |
6596 | TIFF_MASK, | |
6597 | TIFF_BACKGROUND, | |
58279503 | 6598 | TIFF_INDEX, |
4ef0d4d0 KS |
6599 | TIFF_LAST |
6600 | }; | |
6601 | ||
6602 | /* Vector of image_keyword structures describing the format | |
6603 | of valid user-defined image specifications. */ | |
6604 | ||
91433552 | 6605 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6606 | { |
6607 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6608 | {":data", IMAGE_STRING_VALUE, 0}, | |
6609 | {":file", IMAGE_STRING_VALUE, 0}, | |
6610 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6611 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6612 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6613 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6614 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6615 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6616 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6617 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6618 | }; |
6619 | ||
bb4d86b4 | 6620 | #ifdef HAVE_NTGUI |
578098f3 | 6621 | static bool init_tiff_functions (void); |
bb4d86b4 CY |
6622 | #else |
6623 | #define init_tiff_functions NULL | |
6624 | #endif | |
6625 | ||
4ef0d4d0 KS |
6626 | /* Structure describing the image type `tiff'. */ |
6627 | ||
6628 | static struct image_type tiff_type = | |
6629 | { | |
6630 | &Qtiff, | |
6631 | tiff_image_p, | |
6632 | tiff_load, | |
6633 | x_clear_image, | |
bb4d86b4 | 6634 | init_tiff_functions, |
4ef0d4d0 KS |
6635 | NULL |
6636 | }; | |
6637 | ||
578098f3 | 6638 | /* Return true if OBJECT is a valid TIFF image specification. */ |
4ef0d4d0 | 6639 | |
578098f3 | 6640 | static bool |
d3da34e0 | 6641 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6642 | { |
6643 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6644 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6645 | |
6646 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6647 | return 0; | |
6648 | ||
6649 | /* Must specify either the :data or :file keyword. */ | |
6650 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6651 | } | |
6652 | ||
9e2a2647 | 6653 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6654 | |
6655 | #ifdef HAVE_TIFF | |
6656 | ||
6657 | #include <tiffio.h> | |
6658 | ||
0fda9b75 | 6659 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
6660 | |
6661 | /* TIFF library details. */ | |
14beddf4 CY |
6662 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6663 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6664 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6665 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6666 | TIFFReadWriteProc, TIFFReadWriteProc, |
6667 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6668 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6669 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6670 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6671 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6672 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 | 6673 | |
578098f3 | 6674 | static bool |
d07ff9db | 6675 | init_tiff_functions (void) |
4ef0d4d0 KS |
6676 | { |
6677 | HMODULE library; | |
6678 | ||
d07ff9db | 6679 | if (!(library = w32_delayed_load (Qtiff))) |
4ef0d4d0 KS |
6680 | return 0; |
6681 | ||
6682 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6683 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6684 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6685 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6686 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6687 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6688 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6689 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6690 | return 1; |
6691 | } | |
6692 | ||
6693 | #else | |
6694 | ||
6695 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6696 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6697 | #define fn_TIFFOpen TIFFOpen | |
6698 | #define fn_TIFFClientOpen TIFFClientOpen | |
6699 | #define fn_TIFFGetField TIFFGetField | |
6700 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6701 | #define fn_TIFFClose TIFFClose | |
58279503 | 6702 | #define fn_TIFFSetDirectory TIFFSetDirectory |
0fda9b75 | 6703 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
6704 | |
6705 | ||
6706 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6707 | memory source, but we have to provide a lot of extra functions. | |
6708 | Blah. | |
6709 | ||
6710 | We really only need to implement read and seek, but I am not | |
6711 | convinced that the TIFF library is smart enough not to destroy | |
6712 | itself if we only hand it the function pointers we need to | |
6713 | override. */ | |
6714 | ||
6715 | typedef struct | |
6716 | { | |
6717 | unsigned char *bytes; | |
3f791afe PE |
6718 | ptrdiff_t len; |
6719 | ptrdiff_t index; | |
4ef0d4d0 KS |
6720 | } |
6721 | tiff_memory_source; | |
6722 | ||
3f791afe | 6723 | static tsize_t |
d3da34e0 | 6724 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6725 | { |
6726 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6727 | ||
3f791afe | 6728 | size = min (size, src->len - src->index); |
72af86bd | 6729 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6730 | src->index += size; |
6731 | return size; | |
6732 | } | |
6733 | ||
3f791afe | 6734 | static tsize_t |
d3da34e0 | 6735 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 | 6736 | { |
3f791afe | 6737 | return -1; |
4ef0d4d0 KS |
6738 | } |
6739 | ||
6740 | static toff_t | |
d3da34e0 | 6741 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6742 | { |
6743 | tiff_memory_source *src = (tiff_memory_source *) data; | |
3f791afe | 6744 | ptrdiff_t idx; |
4ef0d4d0 KS |
6745 | |
6746 | switch (whence) | |
6747 | { | |
6748 | case SEEK_SET: /* Go from beginning of source. */ | |
6749 | idx = off; | |
6750 | break; | |
6751 | ||
6752 | case SEEK_END: /* Go from end of source. */ | |
6753 | idx = src->len + off; | |
6754 | break; | |
6755 | ||
6756 | case SEEK_CUR: /* Go from current position. */ | |
6757 | idx = src->index + off; | |
6758 | break; | |
6759 | ||
6760 | default: /* Invalid `whence'. */ | |
6761 | return -1; | |
6762 | } | |
6763 | ||
6764 | if (idx > src->len || idx < 0) | |
6765 | return -1; | |
6766 | ||
6767 | src->index = idx; | |
6768 | return src->index; | |
6769 | } | |
6770 | ||
6771 | static int | |
d3da34e0 | 6772 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6773 | { |
6774 | /* NOOP */ | |
6775 | return 0; | |
6776 | } | |
6777 | ||
6778 | static int | |
d3da34e0 | 6779 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6780 | { |
6781 | /* It is already _IN_ memory. */ | |
6782 | return 0; | |
6783 | } | |
6784 | ||
6785 | static void | |
d3da34e0 | 6786 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6787 | { |
6788 | /* We don't need to do this. */ | |
6789 | } | |
6790 | ||
6791 | static toff_t | |
d3da34e0 | 6792 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6793 | { |
6794 | return ((tiff_memory_source *) data)->len; | |
6795 | } | |
6796 | ||
b41c3a35 EZ |
6797 | /* GCC 3.x on x86 Windows targets has a bug that triggers an internal |
6798 | compiler error compiling tiff_handler, see Bugzilla bug #17406 | |
6799 | (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17406). Declaring | |
6800 | this function as external works around that problem. */ | |
6801 | #if defined (__MINGW32__) && __GNUC__ == 3 | |
6802 | # define MINGW_STATIC | |
6803 | #else | |
6804 | # define MINGW_STATIC static | |
6805 | #endif | |
4ef0d4d0 | 6806 | |
b41c3a35 EZ |
6807 | MINGW_STATIC void |
6808 | tiff_handler (const char *, const char *, const char *, va_list) | |
13464394 | 6809 | ATTRIBUTE_FORMAT_PRINTF (3, 0); |
b41c3a35 | 6810 | MINGW_STATIC void |
13464394 PE |
6811 | tiff_handler (const char *log_format, const char *title, |
6812 | const char *format, va_list ap) | |
6813 | { | |
6814 | /* doprnt is not suitable here, as TIFF handlers are called from | |
6815 | libtiff and are passed arbitrary printf directives. Instead, use | |
6816 | vsnprintf, taking care to be portable to nonstandard environments | |
6817 | where vsnprintf returns -1 on buffer overflow. Since it's just a | |
6818 | log entry, it's OK to truncate it. */ | |
6819 | char buf[4000]; | |
6820 | int len = vsnprintf (buf, sizeof buf, format, ap); | |
6821 | add_to_log (log_format, build_string (title), | |
6822 | make_string (buf, max (0, min (len, sizeof buf - 1)))); | |
6823 | } | |
b41c3a35 | 6824 | #undef MINGW_STATIC |
13464394 | 6825 | |
5e2d4a30 PE |
6826 | static void tiff_error_handler (const char *, const char *, va_list) |
6827 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6828 | static void |
d3da34e0 | 6829 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6830 | { |
13464394 | 6831 | tiff_handler ("TIFF error: %s %s", title, format, ap); |
4ef0d4d0 KS |
6832 | } |
6833 | ||
6834 | ||
5e2d4a30 PE |
6835 | static void tiff_warning_handler (const char *, const char *, va_list) |
6836 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6837 | static void |
d3da34e0 | 6838 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6839 | { |
13464394 | 6840 | tiff_handler ("TIFF warning: %s %s", title, format, ap); |
4ef0d4d0 KS |
6841 | } |
6842 | ||
6843 | ||
578098f3 | 6844 | /* Load TIFF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
6845 | successful. */ |
6846 | ||
578098f3 | 6847 | static bool |
d3da34e0 | 6848 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6849 | { |
6850 | Lisp_Object file, specified_file; | |
6851 | Lisp_Object specified_data; | |
6852 | TIFF *tiff; | |
58279503 | 6853 | int width, height, x, y, count; |
4ef0d4d0 | 6854 | uint32 *buf; |
03d0a109 | 6855 | int rc; |
4ef0d4d0 | 6856 | XImagePtr ximg; |
4ef0d4d0 | 6857 | tiff_memory_source memsrc; |
58279503 | 6858 | Lisp_Object image; |
4ef0d4d0 KS |
6859 | |
6860 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6861 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6862 | |
5e2d4a30 PE |
6863 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6864 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6865 | |
6866 | if (NILP (specified_data)) | |
6867 | { | |
6868 | /* Read from a file */ | |
6869 | file = x_find_image_file (specified_file); | |
6870 | if (!STRINGP (file)) | |
6871 | { | |
6872 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6873 | return 0; |
6874 | } | |
6875 | ||
df61c790 | 6876 | /* Try to open the image file. */ |
b19beacc | 6877 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6878 | if (tiff == NULL) |
6879 | { | |
6880 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6881 | return 0; |
6882 | } | |
6883 | } | |
6884 | else | |
6885 | { | |
7574650a AS |
6886 | if (!STRINGP (specified_data)) |
6887 | { | |
6888 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6889 | return 0; | |
6890 | } | |
6891 | ||
4ef0d4d0 KS |
6892 | /* Memory source! */ |
6893 | memsrc.bytes = SDATA (specified_data); | |
6894 | memsrc.len = SBYTES (specified_data); | |
6895 | memsrc.index = 0; | |
6896 | ||
3082f617 | 6897 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
3f791afe PE |
6898 | tiff_read_from_memory, |
6899 | tiff_write_from_memory, | |
df61c790 AS |
6900 | tiff_seek_in_memory, |
6901 | tiff_close_memory, | |
6902 | tiff_size_of_memory, | |
6903 | tiff_mmap_memory, | |
6904 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6905 | |
6906 | if (!tiff) | |
6907 | { | |
6908 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6909 | return 0; |
6910 | } | |
6911 | } | |
6912 | ||
58279503 JR |
6913 | image = image_spec_value (img->spec, QCindex, NULL); |
6914 | if (INTEGERP (image)) | |
6915 | { | |
13464394 PE |
6916 | EMACS_INT ino = XFASTINT (image); |
6917 | if (! (TYPE_MINIMUM (tdir_t) <= ino && ino <= TYPE_MAXIMUM (tdir_t) | |
6918 | && fn_TIFFSetDirectory (tiff, ino))) | |
58279503 JR |
6919 | { |
6920 | image_error ("Invalid image number `%s' in image `%s'", | |
6921 | image, img->spec); | |
6922 | fn_TIFFClose (tiff); | |
58279503 JR |
6923 | return 0; |
6924 | } | |
6925 | } | |
6926 | ||
4ef0d4d0 KS |
6927 | /* Get width and height of the image, and allocate a raster buffer |
6928 | of width x height 32-bit values. */ | |
6929 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6930 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6931 | |
6932 | if (!check_image_size (f, width, height)) | |
6933 | { | |
10ea2b82 | 6934 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6935 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6936 | return 0; |
6937 | } | |
6938 | ||
ca4aa935 PE |
6939 | /* Create the X image and pixmap. */ |
6940 | if (! (height <= min (PTRDIFF_MAX, SIZE_MAX) / sizeof *buf / width | |
6941 | && x_create_x_image_and_pixmap (f, width, height, 0, | |
6942 | &ximg, &img->pixmap))) | |
6943 | { | |
6944 | fn_TIFFClose (tiff); | |
6945 | return 0; | |
6946 | } | |
6947 | ||
23f86fce | 6948 | buf = xmalloc (sizeof *buf * width * height); |
4ef0d4d0 KS |
6949 | |
6950 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6951 | |
6952 | /* Count the number of images in the file. */ | |
03d0a109 PE |
6953 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
6954 | continue; | |
58279503 JR |
6955 | |
6956 | if (count > 1) | |
b50691aa CY |
6957 | img->lisp_data = Fcons (Qcount, |
6958 | Fcons (make_number (count), | |
6959 | img->lisp_data)); | |
58279503 | 6960 | |
4ef0d4d0 KS |
6961 | fn_TIFFClose (tiff); |
6962 | if (!rc) | |
6963 | { | |
6964 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6965 | xfree (buf); | |
4ef0d4d0 KS |
6966 | return 0; |
6967 | } | |
6968 | ||
4ef0d4d0 KS |
6969 | /* Initialize the color table. */ |
6970 | init_color_table (); | |
6971 | ||
6972 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6973 | for (y = 0; y < height; ++y) | |
6974 | { | |
6975 | uint32 *row = buf + y * width; | |
6976 | ||
6977 | for (x = 0; x < width; ++x) | |
6978 | { | |
6979 | uint32 abgr = row[x]; | |
6980 | int r = TIFFGetR (abgr) << 8; | |
6981 | int g = TIFFGetG (abgr) << 8; | |
6982 | int b = TIFFGetB (abgr) << 8; | |
6983 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6984 | } | |
6985 | } | |
6986 | ||
6987 | #ifdef COLOR_TABLE_SUPPORT | |
6988 | /* Remember the colors allocated for the image. Free the color table. */ | |
6989 | img->colors = colors_in_color_table (&img->ncolors); | |
6990 | free_color_table (); | |
6991 | #endif /* COLOR_TABLE_SUPPORT */ | |
6992 | ||
6993 | img->width = width; | |
6994 | img->height = height; | |
6995 | ||
6996 | /* Maybe fill in the background field while we have ximg handy. */ | |
6997 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6998 | /* Casting avoids a GCC warning on W32. */ |
6999 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7000 | |
7001 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7002 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7003 | x_destroy_x_image (ximg); | |
7004 | xfree (buf); | |
7005 | ||
4ef0d4d0 KS |
7006 | return 1; |
7007 | } | |
7008 | ||
7009 | #else /* HAVE_TIFF */ | |
7010 | ||
edfda783 | 7011 | #ifdef HAVE_NS |
578098f3 | 7012 | static bool |
edfda783 AR |
7013 | tiff_load (struct frame *f, struct image *img) |
7014 | { | |
ed3751c8 JB |
7015 | return ns_load_image (f, img, |
7016 | image_spec_value (img->spec, QCfile, NULL), | |
7017 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7018 | } |
7019 | #endif /* HAVE_NS */ | |
7020 | ||
4ef0d4d0 KS |
7021 | #endif /* !HAVE_TIFF */ |
7022 | ||
7023 | ||
7024 | \f | |
7025 | /*********************************************************************** | |
7026 | GIF | |
7027 | ***********************************************************************/ | |
7028 | ||
9e2a2647 | 7029 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 7030 | |
578098f3 PE |
7031 | static bool gif_image_p (Lisp_Object object); |
7032 | static bool gif_load (struct frame *f, struct image *img); | |
f57e2426 | 7033 | static void gif_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
7034 | |
7035 | /* The symbol `gif' identifying images of this type. */ | |
7036 | ||
955cbe7b | 7037 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
7038 | |
7039 | /* Indices of image specification fields in gif_format, below. */ | |
7040 | ||
7041 | enum gif_keyword_index | |
7042 | { | |
7043 | GIF_TYPE, | |
7044 | GIF_DATA, | |
7045 | GIF_FILE, | |
7046 | GIF_ASCENT, | |
7047 | GIF_MARGIN, | |
7048 | GIF_RELIEF, | |
7049 | GIF_ALGORITHM, | |
7050 | GIF_HEURISTIC_MASK, | |
7051 | GIF_MASK, | |
7052 | GIF_IMAGE, | |
7053 | GIF_BACKGROUND, | |
7054 | GIF_LAST | |
7055 | }; | |
7056 | ||
7057 | /* Vector of image_keyword structures describing the format | |
7058 | of valid user-defined image specifications. */ | |
7059 | ||
91433552 | 7060 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
7061 | { |
7062 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7063 | {":data", IMAGE_STRING_VALUE, 0}, | |
7064 | {":file", IMAGE_STRING_VALUE, 0}, | |
7065 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7066 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
7067 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7068 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7069 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7070 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 7071 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
7072 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
7073 | }; | |
7074 | ||
a9e7a9d5 | 7075 | #if defined HAVE_NTGUI && defined WINDOWSNT |
578098f3 | 7076 | static bool init_gif_functions (void); |
bb4d86b4 CY |
7077 | #else |
7078 | #define init_gif_functions NULL | |
7079 | #endif | |
7080 | ||
4ef0d4d0 KS |
7081 | /* Structure describing the image type `gif'. */ |
7082 | ||
7083 | static struct image_type gif_type = | |
7084 | { | |
7085 | &Qgif, | |
7086 | gif_image_p, | |
7087 | gif_load, | |
6ac3c7bb | 7088 | gif_clear_image, |
bb4d86b4 | 7089 | init_gif_functions, |
4ef0d4d0 KS |
7090 | NULL |
7091 | }; | |
7092 | ||
6ac3c7bb KS |
7093 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7094 | ||
7095 | static void | |
d3da34e0 | 7096 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 7097 | { |
b50691aa | 7098 | img->lisp_data = Qnil; |
6ac3c7bb KS |
7099 | x_clear_image (f, img); |
7100 | } | |
7101 | ||
578098f3 | 7102 | /* Return true if OBJECT is a valid GIF image specification. */ |
4ef0d4d0 | 7103 | |
578098f3 | 7104 | static bool |
d3da34e0 | 7105 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
7106 | { |
7107 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 7108 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7109 | |
7110 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7111 | return 0; | |
7112 | ||
7113 | /* Must specify either the :data or :file keyword. */ | |
7114 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7115 | } | |
7116 | ||
9e2a2647 | 7117 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7118 | |
7119 | #ifdef HAVE_GIF | |
7120 | ||
9e2a2647 | 7121 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
7122 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7123 | Undefine before redefining to avoid a preprocessor warning. */ | |
7124 | #ifdef DrawText | |
7125 | #undef DrawText | |
7126 | #endif | |
4ef0d4d0 KS |
7127 | /* avoid conflict with QuickdrawText.h */ |
7128 | #define DrawText gif_DrawText | |
7129 | #include <gif_lib.h> | |
7130 | #undef DrawText | |
7131 | ||
9e2a2647 | 7132 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7133 | |
7134 | #include <gif_lib.h> | |
7135 | ||
9e2a2647 | 7136 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7137 | |
7138 | ||
0fda9b75 | 7139 | #ifdef WINDOWSNT |
4ef0d4d0 KS |
7140 | |
7141 | /* GIF library details. */ | |
14beddf4 CY |
7142 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7143 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7144 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7145 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 | 7146 | |
578098f3 | 7147 | static bool |
d07ff9db | 7148 | init_gif_functions (void) |
4ef0d4d0 KS |
7149 | { |
7150 | HMODULE library; | |
7151 | ||
d07ff9db | 7152 | if (!(library = w32_delayed_load (Qgif))) |
4ef0d4d0 KS |
7153 | return 0; |
7154 | ||
7155 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7156 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7157 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7158 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7159 | return 1; | |
7160 | } | |
7161 | ||
7162 | #else | |
7163 | ||
7164 | #define fn_DGifCloseFile DGifCloseFile | |
7165 | #define fn_DGifSlurp DGifSlurp | |
7166 | #define fn_DGifOpen DGifOpen | |
7167 | #define fn_DGifOpenFileName DGifOpenFileName | |
7168 | ||
0fda9b75 | 7169 | #endif /* WINDOWSNT */ |
4ef0d4d0 KS |
7170 | |
7171 | /* Reading a GIF image from memory | |
7172 | Based on the PNG memory stuff to a certain extent. */ | |
7173 | ||
7174 | typedef struct | |
7175 | { | |
7176 | unsigned char *bytes; | |
3f791afe PE |
7177 | ptrdiff_t len; |
7178 | ptrdiff_t index; | |
4ef0d4d0 KS |
7179 | } |
7180 | gif_memory_source; | |
7181 | ||
7182 | /* Make the current memory source available to gif_read_from_memory. | |
7183 | It's done this way because not all versions of libungif support | |
7184 | a UserData field in the GifFileType structure. */ | |
7185 | static gif_memory_source *current_gif_memory_src; | |
7186 | ||
7187 | static int | |
d3da34e0 | 7188 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7189 | { |
7190 | gif_memory_source *src = current_gif_memory_src; | |
7191 | ||
7192 | if (len > src->len - src->index) | |
7193 | return -1; | |
7194 | ||
72af86bd | 7195 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7196 | src->index += len; |
7197 | return len; | |
7198 | } | |
7199 | ||
7200 | ||
578098f3 | 7201 | /* Load GIF image IMG for use on frame F. Value is true if |
4ef0d4d0 KS |
7202 | successful. */ |
7203 | ||
91433552 DN |
7204 | static const int interlace_start[] = {0, 4, 2, 1}; |
7205 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7206 | |
17c0c952 JD |
7207 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7208 | ||
578098f3 | 7209 | static bool |
d3da34e0 | 7210 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 | 7211 | { |
60002bf5 CY |
7212 | Lisp_Object file; |
7213 | int rc, width, height, x, y, i, j; | |
4ef0d4d0 KS |
7214 | XImagePtr ximg; |
7215 | ColorMapObject *gif_color_map; | |
7216 | unsigned long pixel_colors[256]; | |
7217 | GifFileType *gif; | |
4ef0d4d0 | 7218 | gif_memory_source memsrc; |
60002bf5 CY |
7219 | Lisp_Object specified_bg = image_spec_value (img->spec, QCbackground, NULL); |
7220 | Lisp_Object specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7221 | Lisp_Object specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7222 | unsigned long bgcolor = 0; | |
13464394 | 7223 | EMACS_INT idx; |
4ef0d4d0 KS |
7224 | |
7225 | if (NILP (specified_data)) | |
7226 | { | |
7227 | file = x_find_image_file (specified_file); | |
7228 | if (!STRINGP (file)) | |
7229 | { | |
7230 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7231 | return 0; |
7232 | } | |
7233 | ||
df61c790 | 7234 | /* Open the GIF file. */ |
2037898d | 7235 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7236 | if (gif == NULL) |
7237 | { | |
7238 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7239 | return 0; |
7240 | } | |
7241 | } | |
7242 | else | |
7243 | { | |
7574650a AS |
7244 | if (!STRINGP (specified_data)) |
7245 | { | |
7246 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7247 | return 0; | |
7248 | } | |
7249 | ||
4ef0d4d0 KS |
7250 | /* Read from memory! */ |
7251 | current_gif_memory_src = &memsrc; | |
7252 | memsrc.bytes = SDATA (specified_data); | |
7253 | memsrc.len = SBYTES (specified_data); | |
7254 | memsrc.index = 0; | |
7255 | ||
df61c790 | 7256 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7257 | if (!gif) |
7258 | { | |
7259 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7260 | return 0; |
7261 | } | |
7262 | } | |
7263 | ||
f1f25b99 CY |
7264 | /* Before reading entire contents, check the declared image size. */ |
7265 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7266 | { | |
10ea2b82 | 7267 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7268 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7269 | return 0; |
7270 | } | |
7271 | ||
4ef0d4d0 KS |
7272 | /* Read entire contents. */ |
7273 | rc = fn_DGifSlurp (gif); | |
60002bf5 | 7274 | if (rc == GIF_ERROR || gif->ImageCount <= 0) |
4ef0d4d0 KS |
7275 | { |
7276 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7277 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7278 | return 0; |
7279 | } | |
7280 | ||
60002bf5 CY |
7281 | /* Which sub-image are we to display? */ |
7282 | { | |
33290528 PE |
7283 | Lisp_Object image_number = image_spec_value (img->spec, QCindex, NULL); |
7284 | idx = INTEGERP (image_number) ? XFASTINT (image_number) : 0; | |
60002bf5 | 7285 | if (idx < 0 || idx >= gif->ImageCount) |
17c0c952 | 7286 | { |
60002bf5 | 7287 | image_error ("Invalid image number `%s' in image `%s'", |
33290528 | 7288 | image_number, img->spec); |
60002bf5 CY |
7289 | fn_DGifCloseFile (gif); |
7290 | return 0; | |
17c0c952 | 7291 | } |
60002bf5 | 7292 | } |
17c0c952 | 7293 | |
e013fb34 CY |
7294 | width = img->width = gif->SWidth; |
7295 | height = img->height = gif->SHeight; | |
0f4aca46 | 7296 | |
e013fb34 CY |
7297 | img->corners[TOP_CORNER] = gif->SavedImages[0].ImageDesc.Top; |
7298 | img->corners[LEFT_CORNER] = gif->SavedImages[0].ImageDesc.Left; | |
8d903f4e AS |
7299 | img->corners[BOT_CORNER] |
7300 | = img->corners[TOP_CORNER] + gif->SavedImages[0].ImageDesc.Height; | |
7301 | img->corners[RIGHT_CORNER] | |
7302 | = img->corners[LEFT_CORNER] + gif->SavedImages[0].ImageDesc.Width; | |
4ef0d4d0 | 7303 | |
f1f25b99 CY |
7304 | if (!check_image_size (f, width, height)) |
7305 | { | |
10ea2b82 | 7306 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7307 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7308 | return 0; |
7309 | } | |
7310 | ||
4ef0d4d0 KS |
7311 | /* Create the X image and pixmap. */ |
7312 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7313 | { | |
7314 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7315 | return 0; |
7316 | } | |
7317 | ||
60002bf5 CY |
7318 | /* Clear the part of the screen image not covered by the image. |
7319 | Full animated GIF support requires more here (see the gif89 spec, | |
7320 | disposal methods). Let's simply assume that the part not covered | |
7321 | by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7322 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7323 | for (x = 0; x < width; ++x) |
7324 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7325 | ||
6ac3c7bb | 7326 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7327 | for (x = 0; x < width; ++x) |
7328 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7329 | ||
6ac3c7bb | 7330 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7331 | { |
6ac3c7bb | 7332 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7333 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7334 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7335 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7336 | } | |
7337 | ||
60002bf5 | 7338 | /* Read the GIF image into the X image. */ |
4ef0d4d0 | 7339 | |
60002bf5 CY |
7340 | /* FIXME: With the current implementation, loading an animated gif |
7341 | is quadratic in the number of animation frames, since each frame | |
7342 | is a separate struct image. We must provide a way for a single | |
7343 | gif_load call to construct and save all animation frames. */ | |
4ef0d4d0 | 7344 | |
60002bf5 CY |
7345 | init_color_table (); |
7346 | if (STRINGP (specified_bg)) | |
7347 | bgcolor = x_alloc_image_color (f, img, specified_bg, | |
7348 | FRAME_BACKGROUND_PIXEL (f)); | |
7349 | for (j = 0; j <= idx; ++j) | |
7350 | { | |
7351 | /* We use a local variable `raster' here because RasterBits is a | |
7352 | char *, which invites problems with bytes >= 0x80. */ | |
7353 | struct SavedImage *subimage = gif->SavedImages + j; | |
7354 | unsigned char *raster = (unsigned char *) subimage->RasterBits; | |
7355 | int transparency_color_index = -1; | |
7356 | int disposal = 0; | |
e013fb34 CY |
7357 | int subimg_width = subimage->ImageDesc.Width; |
7358 | int subimg_height = subimage->ImageDesc.Height; | |
7359 | int subimg_top = subimage->ImageDesc.Top; | |
7360 | int subimg_left = subimage->ImageDesc.Left; | |
60002bf5 CY |
7361 | |
7362 | /* Find the Graphic Control Extension block for this sub-image. | |
7363 | Extract the disposal method and transparency color. */ | |
7364 | for (i = 0; i < subimage->ExtensionBlockCount; i++) | |
4ef0d4d0 | 7365 | { |
60002bf5 | 7366 | ExtensionBlock *extblock = subimage->ExtensionBlocks + i; |
4ef0d4d0 | 7367 | |
60002bf5 CY |
7368 | if ((extblock->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION) |
7369 | && extblock->ByteCount == 4 | |
7370 | && extblock->Bytes[0] & 1) | |
4ef0d4d0 | 7371 | { |
60002bf5 CY |
7372 | /* From gif89a spec: 1 = "keep in place", 2 = "restore |
7373 | to background". Treat any other value like 2. */ | |
7374 | disposal = (extblock->Bytes[0] >> 2) & 7; | |
2547adb1 | 7375 | transparency_color_index = (unsigned char) extblock->Bytes[3]; |
60002bf5 | 7376 | break; |
4ef0d4d0 | 7377 | } |
4ef0d4d0 | 7378 | } |
60002bf5 CY |
7379 | |
7380 | /* We can't "keep in place" the first subimage. */ | |
7381 | if (j == 0) | |
7382 | disposal = 2; | |
7383 | ||
e013fb34 CY |
7384 | /* For disposal == 0, the spec says "No disposal specified. The |
7385 | decoder is not required to take any action." In practice, it | |
7386 | seems we need to treat this like "keep in place", see e.g. | |
7387 | http://upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif */ | |
7388 | if (disposal == 0) | |
7389 | disposal = 1; | |
7390 | ||
60002bf5 CY |
7391 | /* Allocate subimage colors. */ |
7392 | memset (pixel_colors, 0, sizeof pixel_colors); | |
7393 | gif_color_map = subimage->ImageDesc.ColorMap; | |
7394 | if (!gif_color_map) | |
7395 | gif_color_map = gif->SColorMap; | |
7396 | ||
7397 | if (gif_color_map) | |
7398 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
4ef0d4d0 | 7399 | { |
60002bf5 CY |
7400 | if (transparency_color_index == i) |
7401 | pixel_colors[i] = STRINGP (specified_bg) | |
7402 | ? bgcolor : FRAME_BACKGROUND_PIXEL (f); | |
7403 | else | |
7404 | { | |
7405 | int r = gif_color_map->Colors[i].Red << 8; | |
7406 | int g = gif_color_map->Colors[i].Green << 8; | |
7407 | int b = gif_color_map->Colors[i].Blue << 8; | |
7408 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7409 | } | |
4ef0d4d0 | 7410 | } |
60002bf5 CY |
7411 | |
7412 | /* Apply the pixel values. */ | |
7413 | if (gif->SavedImages[j].ImageDesc.Interlace) | |
7414 | { | |
7415 | int row, pass; | |
7416 | ||
7417 | for (y = 0, row = interlace_start[0], pass = 0; | |
e013fb34 | 7418 | y < subimg_height; |
60002bf5 CY |
7419 | y++, row += interlace_increment[pass]) |
7420 | { | |
e013fb34 | 7421 | if (row >= subimg_height) |
60002bf5 CY |
7422 | { |
7423 | row = interlace_start[++pass]; | |
e013fb34 | 7424 | while (row >= subimg_height) |
60002bf5 CY |
7425 | row = interlace_start[++pass]; |
7426 | } | |
7427 | ||
e013fb34 | 7428 | for (x = 0; x < subimg_width; x++) |
60002bf5 | 7429 | { |
e013fb34 | 7430 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7431 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7432 | XPutPixel (ximg, x + subimg_left, row + subimg_top, |
7433 | pixel_colors[c]); | |
60002bf5 CY |
7434 | } |
7435 | } | |
7436 | } | |
7437 | else | |
7438 | { | |
e013fb34 CY |
7439 | for (y = 0; y < subimg_height; ++y) |
7440 | for (x = 0; x < subimg_width; ++x) | |
60002bf5 | 7441 | { |
e013fb34 | 7442 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7443 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7444 | XPutPixel (ximg, x + subimg_left, y + subimg_top, |
7445 | pixel_colors[c]); | |
60002bf5 CY |
7446 | } |
7447 | } | |
4ef0d4d0 KS |
7448 | } |
7449 | ||
60002bf5 CY |
7450 | #ifdef COLOR_TABLE_SUPPORT |
7451 | img->colors = colors_in_color_table (&img->ncolors); | |
7452 | free_color_table (); | |
7453 | #endif /* COLOR_TABLE_SUPPORT */ | |
7454 | ||
1546c559 JL |
7455 | /* Save GIF image extension data for `image-metadata'. |
7456 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
b50691aa | 7457 | img->lisp_data = Qnil; |
60002bf5 | 7458 | if (gif->SavedImages[idx].ExtensionBlockCount > 0) |
6ac3c7bb | 7459 | { |
13464394 | 7460 | int delay = 0; |
60002bf5 CY |
7461 | ExtensionBlock *ext = gif->SavedImages[idx].ExtensionBlocks; |
7462 | for (i = 0; i < gif->SavedImages[idx].ExtensionBlockCount; i++, ext++) | |
6ac3c7bb | 7463 | /* Append (... FUNCTION "BYTES") */ |
1100a63c CY |
7464 | { |
7465 | img->lisp_data | |
7466 | = Fcons (make_number (ext->Function), | |
7467 | Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7468 | img->lisp_data)); | |
7469 | if (ext->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION | |
7470 | && ext->ByteCount == 4) | |
7471 | { | |
7472 | delay = ext->Bytes[2] << CHAR_BIT; | |
7473 | delay |= ext->Bytes[1]; | |
7474 | } | |
7475 | } | |
b50691aa | 7476 | img->lisp_data = Fcons (Qextension_data, |
1100a63c CY |
7477 | Fcons (img->lisp_data, Qnil)); |
7478 | if (delay) | |
7479 | img->lisp_data | |
7480 | = Fcons (Qdelay, | |
13464394 | 7481 | Fcons (make_float (delay / 100.0), |
1100a63c | 7482 | img->lisp_data)); |
6ac3c7bb | 7483 | } |
1100a63c | 7484 | |
6ac3c7bb | 7485 | if (gif->ImageCount > 1) |
b50691aa CY |
7486 | img->lisp_data = Fcons (Qcount, |
7487 | Fcons (make_number (gif->ImageCount), | |
7488 | img->lisp_data)); | |
6ac3c7bb | 7489 | |
4ef0d4d0 KS |
7490 | fn_DGifCloseFile (gif); |
7491 | ||
7492 | /* Maybe fill in the background field while we have ximg handy. */ | |
7493 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7494 | /* Casting avoids a GCC warning. */ |
7495 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7496 | |
7497 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7498 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7499 | x_destroy_x_image (ximg); | |
7500 | ||
4ef0d4d0 KS |
7501 | return 1; |
7502 | } | |
7503 | ||
2e09fef1 | 7504 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7505 | |
edfda783 | 7506 | #ifdef HAVE_NS |
578098f3 | 7507 | static bool |
edfda783 AR |
7508 | gif_load (struct frame *f, struct image *img) |
7509 | { | |
ed3751c8 JB |
7510 | return ns_load_image (f, img, |
7511 | image_spec_value (img->spec, QCfile, NULL), | |
7512 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7513 | } |
7514 | #endif /* HAVE_NS */ | |
7515 | ||
4ef0d4d0 KS |
7516 | #endif /* HAVE_GIF */ |
7517 | ||
7518 | ||
3de25479 | 7519 | /*********************************************************************** |
a32d4040 | 7520 | ImageMagick |
4917006b | 7521 | ***********************************************************************/ |
3de25479 | 7522 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 | 7523 | |
4b66faf3 | 7524 | static Lisp_Object Qimagemagick; |
a32d4040 | 7525 | |
578098f3 PE |
7526 | static bool imagemagick_image_p (Lisp_Object); |
7527 | static bool imagemagick_load (struct frame *, struct image *); | |
d66c4c7c CY |
7528 | static void imagemagick_clear_image (struct frame *, struct image *); |
7529 | ||
a32d4040 | 7530 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7531 | |
7532 | enum imagemagick_keyword_index | |
4917006b JV |
7533 | { |
7534 | IMAGEMAGICK_TYPE, | |
7535 | IMAGEMAGICK_DATA, | |
7536 | IMAGEMAGICK_FILE, | |
7537 | IMAGEMAGICK_ASCENT, | |
7538 | IMAGEMAGICK_MARGIN, | |
7539 | IMAGEMAGICK_RELIEF, | |
7540 | IMAGEMAGICK_ALGORITHM, | |
7541 | IMAGEMAGICK_HEURISTIC_MASK, | |
7542 | IMAGEMAGICK_MASK, | |
7543 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7544 | IMAGEMAGICK_HEIGHT, |
7545 | IMAGEMAGICK_WIDTH, | |
7546 | IMAGEMAGICK_ROTATION, | |
7547 | IMAGEMAGICK_CROP, | |
4917006b JV |
7548 | IMAGEMAGICK_LAST |
7549 | }; | |
3de25479 JV |
7550 | |
7551 | /* Vector of image_keyword structures describing the format | |
7552 | of valid user-defined image specifications. */ | |
7553 | ||
7554 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7555 | { |
7556 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7557 | {":data", IMAGE_STRING_VALUE, 0}, | |
7558 | {":file", IMAGE_STRING_VALUE, 0}, | |
7559 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7560 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4917006b JV |
7561 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7562 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7563 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7564 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7565 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7566 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7567 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7568 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7569 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7570 | }; |
a32d4040 | 7571 | |
bb4d86b4 | 7572 | #ifdef HAVE_NTGUI |
578098f3 | 7573 | static bool init_imagemagick_functions (void); |
bb4d86b4 CY |
7574 | #else |
7575 | #define init_imagemagick_functions NULL | |
7576 | #endif | |
7577 | ||
d66c4c7c CY |
7578 | /* Structure describing the image type for any image handled via |
7579 | ImageMagick. */ | |
7580 | ||
7581 | static struct image_type imagemagick_type = | |
7582 | { | |
7583 | &Qimagemagick, | |
7584 | imagemagick_image_p, | |
7585 | imagemagick_load, | |
7586 | imagemagick_clear_image, | |
bb4d86b4 | 7587 | init_imagemagick_functions, |
d66c4c7c CY |
7588 | NULL |
7589 | }; | |
7590 | ||
3de25479 JV |
7591 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7592 | ||
7593 | static void | |
4917006b JV |
7594 | imagemagick_clear_image (struct frame *f, |
7595 | struct image *img) | |
3de25479 | 7596 | { |
3de25479 JV |
7597 | x_clear_image (f, img); |
7598 | } | |
7599 | ||
578098f3 | 7600 | /* Return true if OBJECT is a valid IMAGEMAGICK image specification. Do |
3de25479 JV |
7601 | this by calling parse_image_spec and supplying the keywords that |
7602 | identify the IMAGEMAGICK format. */ | |
7603 | ||
578098f3 | 7604 | static bool |
4917006b | 7605 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7606 | { |
7607 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7608 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7609 | |
7610 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7611 | return 0; | |
7612 | ||
7613 | /* Must specify either the :data or :file keyword. */ | |
7614 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7615 | } | |
7616 | ||
7617 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
c7015153 | 7618 | Therefore rename the function so it doesn't collide with ImageMagick. */ |
3de25479 JV |
7619 | #define DrawRectangle DrawRectangleGif |
7620 | #include <wand/MagickWand.h> | |
7621 | ||
60737f02 PE |
7622 | /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason. |
7623 | Emacs seems to work fine with the hidden version, so unhide it. */ | |
7624 | #include <magick/version.h> | |
7625 | #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665 | |
7626 | extern WandExport void PixelGetMagickColor (const PixelWand *, | |
7627 | MagickPixelPacket *); | |
7628 | #endif | |
7629 | ||
d1d7b339 JL |
7630 | /* Log ImageMagick error message. |
7631 | Useful when a ImageMagick function returns the status `MagickFalse'. */ | |
7632 | ||
7633 | static void | |
7634 | imagemagick_error (MagickWand *wand) | |
7635 | { | |
7636 | char *description; | |
7637 | ExceptionType severity; | |
7638 | ||
7639 | description = MagickGetException (wand, &severity); | |
7640 | image_error ("ImageMagick error: %s", | |
1130ecfc | 7641 | build_string (description), |
d1d7b339 JL |
7642 | Qnil); |
7643 | description = (char *) MagickRelinquishMemory (description); | |
7644 | } | |
7645 | ||
d66c4c7c CY |
7646 | /* Helper function for imagemagick_load, which does the actual loading |
7647 | given contents and size, apart from frame and image structures, | |
7648 | passed from imagemagick_load. Uses librimagemagick to do most of | |
7649 | the image processing. | |
3de25479 | 7650 | |
d66c4c7c CY |
7651 | F is a pointer to the Emacs frame; IMG to the image structure to |
7652 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
7653 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
7654 | either the file name or the image data. | |
3de25479 | 7655 | |
578098f3 | 7656 | Return true if successful. */ |
3de25479 | 7657 | |
578098f3 | 7658 | static bool |
d66c4c7c CY |
7659 | imagemagick_load_image (struct frame *f, struct image *img, |
7660 | unsigned char *contents, unsigned int size, | |
33290528 | 7661 | char *filename) |
3de25479 | 7662 | { |
1b9b4cf4 | 7663 | size_t width, height; |
d66c4c7c | 7664 | MagickBooleanType status; |
3de25479 | 7665 | XImagePtr ximg; |
1b9b4cf4 CY |
7666 | int x, y; |
7667 | MagickWand *image_wand; | |
7668 | MagickWand *ping_wand; | |
3de25479 | 7669 | PixelIterator *iterator; |
1b9b4cf4 | 7670 | PixelWand **pixels, *bg_wand = NULL; |
3de25479 | 7671 | MagickPixelPacket pixel; |
4917006b | 7672 | Lisp_Object image; |
7574650a | 7673 | Lisp_Object value; |
33290528 | 7674 | Lisp_Object crop; |
13464394 | 7675 | EMACS_INT ino; |
4917006b JV |
7676 | int desired_width, desired_height; |
7677 | double rotation; | |
7574650a | 7678 | int pixelwidth; |
7574650a | 7679 | |
a32d4040 CY |
7680 | /* Handle image index for image types who can contain more than one image. |
7681 | Interface :index is same as for GIF. First we "ping" the image to see how | |
7682 | many sub-images it contains. Pinging is faster than loading the image to | |
7683 | find out things about it. */ | |
f853f599 | 7684 | |
a32d4040 | 7685 | /* Initialize the imagemagick environment. */ |
f853f599 | 7686 | MagickWandGenesis (); |
3de25479 JV |
7687 | image = image_spec_value (img->spec, QCindex, NULL); |
7688 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a | 7689 | ping_wand = NewMagickWand (); |
d1d7b339 | 7690 | /* MagickSetResolution (ping_wand, 2, 2); (Bug#10112) */ |
fa4fdb5c | 7691 | |
1b9b4cf4 CY |
7692 | status = filename |
7693 | ? MagickPingImage (ping_wand, filename) | |
7694 | : MagickPingImageBlob (ping_wand, contents, size); | |
7574650a | 7695 | |
d1d7b339 JL |
7696 | if (status == MagickFalse) |
7697 | { | |
7698 | imagemagick_error (ping_wand); | |
7699 | DestroyMagickWand (ping_wand); | |
7700 | return 0; | |
7701 | } | |
fa4fdb5c | 7702 | |
1b9b4cf4 | 7703 | if (ino < 0 || ino >= MagickGetNumberImages (ping_wand)) |
7574650a AS |
7704 | { |
7705 | image_error ("Invalid image number `%s' in image `%s'", | |
7706 | image, img->spec); | |
7707 | DestroyMagickWand (ping_wand); | |
7708 | return 0; | |
f3700365 | 7709 | } |
431dab04 | 7710 | |
5e617bc2 | 7711 | if (MagickGetNumberImages (ping_wand) > 1) |
b50691aa | 7712 | img->lisp_data = |
d2a2d277 | 7713 | Fcons (Qcount, |
7574650a | 7714 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
b50691aa | 7715 | img->lisp_data)); |
f3700365 JV |
7716 | |
7717 | DestroyMagickWand (ping_wand); | |
f853f599 | 7718 | |
d66c4c7c | 7719 | /* Now we know how many images are inside the file. If it's not a |
1b9b4cf4 | 7720 | bundle, the number is one. Load the image data. */ |
f3700365 | 7721 | |
1b9b4cf4 | 7722 | image_wand = NewMagickWand (); |
f3700365 | 7723 | |
1b9b4cf4 CY |
7724 | if ((filename |
7725 | ? MagickReadImage (image_wand, filename) | |
7726 | : MagickReadImageBlob (image_wand, contents, size)) | |
7727 | == MagickFalse) | |
f3700365 | 7728 | { |
1b9b4cf4 CY |
7729 | imagemagick_error (image_wand); |
7730 | goto imagemagick_error; | |
f3700365 | 7731 | } |
f853f599 | 7732 | |
1b9b4cf4 CY |
7733 | /* Retrieve the frame's background color, for use later. */ |
7734 | { | |
7735 | XColor bgcolor; | |
7736 | Lisp_Object specified_bg; | |
7737 | ||
7738 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
7739 | if (!STRINGP (specified_bg) | |
7740 | || !x_defined_color (f, SSDATA (specified_bg), &bgcolor, 0)) | |
7741 | { | |
7742 | #ifndef HAVE_NS | |
7743 | bgcolor.pixel = FRAME_BACKGROUND_PIXEL (f); | |
7744 | x_query_color (f, &bgcolor); | |
7745 | #else | |
7746 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &bgcolor, 1); | |
7747 | #endif | |
7748 | } | |
7749 | ||
7750 | bg_wand = NewPixelWand (); | |
7751 | PixelSetRed (bg_wand, (double) bgcolor.red / 65535); | |
7752 | PixelSetGreen (bg_wand, (double) bgcolor.green / 65535); | |
7753 | PixelSetBlue (bg_wand, (double) bgcolor.blue / 65535); | |
7754 | } | |
7755 | ||
d2a2d277 | 7756 | /* If width and/or height is set in the display spec assume we want |
a32d4040 | 7757 | to scale to those values. If either h or w is unspecified, the |
f3700365 | 7758 | unspecified should be calculated from the specified to preserve |
549a73b9 | 7759 | aspect ratio. */ |
3de25479 JV |
7760 | value = image_spec_value (img->spec, QCwidth, NULL); |
7761 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7762 | value = image_spec_value (img->spec, QCheight, NULL); | |
7763 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7764 | |
bdf6a35d JV |
7765 | height = MagickGetImageHeight (image_wand); |
7766 | width = MagickGetImageWidth (image_wand); | |
7767 | ||
a32d4040 CY |
7768 | if (desired_width != -1 && desired_height == -1) |
7769 | /* w known, calculate h. */ | |
7770 | desired_height = (double) desired_width / width * height; | |
7771 | if (desired_width == -1 && desired_height != -1) | |
7772 | /* h known, calculate w. */ | |
7773 | desired_width = (double) desired_height / height * width; | |
7774 | if (desired_width != -1 && desired_height != -1) | |
4917006b | 7775 | { |
7574650a AS |
7776 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7777 | if (status == MagickFalse) | |
7778 | { | |
7779 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
d1d7b339 | 7780 | imagemagick_error (image_wand); |
7574650a AS |
7781 | goto imagemagick_error; |
7782 | } | |
3de25479 | 7783 | } |
3de25479 | 7784 | |
f3700365 | 7785 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7786 | efficient. */ |
7787 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7788 | ||
13464394 | 7789 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7790 | { |
a32d4040 CY |
7791 | /* After some testing, it seems MagickCropImage is the fastest crop |
7792 | function in ImageMagick. This crop function seems to do less copying | |
7793 | than the alternatives, but it still reads the entire image into memory | |
13464394 | 7794 | before cropping, which is apparently difficult to avoid when using |
a32d4040 | 7795 | imagemagick. */ |
13464394 | 7796 | size_t crop_width = XINT (XCAR (crop)); |
7574650a | 7797 | crop = XCDR (crop); |
13464394 | 7798 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7799 | { |
13464394 | 7800 | size_t crop_height = XINT (XCAR (crop)); |
7574650a | 7801 | crop = XCDR (crop); |
13464394 | 7802 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7803 | { |
13464394 | 7804 | ssize_t crop_x = XINT (XCAR (crop)); |
7574650a | 7805 | crop = XCDR (crop); |
13464394 | 7806 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7807 | { |
13464394 PE |
7808 | ssize_t crop_y = XINT (XCAR (crop)); |
7809 | MagickCropImage (image_wand, crop_width, crop_height, | |
7810 | crop_x, crop_y); | |
7574650a AS |
7811 | } |
7812 | } | |
7813 | } | |
7814 | } | |
7815 | ||
d2a2d277 JV |
7816 | /* Furthermore :rotation. we need background color and angle for |
7817 | rotation. */ | |
3de25479 | 7818 | /* |
d2a2d277 JV |
7819 | TODO background handling for rotation specified_bg = |
7820 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7821 | (specified_bg). */ |
4917006b JV |
7822 | value = image_spec_value (img->spec, QCrotation, NULL); |
7823 | if (FLOATP (value)) | |
7824 | { | |
3de25479 | 7825 | rotation = extract_float (value); |
1b9b4cf4 | 7826 | status = MagickRotateImage (image_wand, bg_wand, rotation); |
4917006b JV |
7827 | if (status == MagickFalse) |
7828 | { | |
7829 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
d1d7b339 | 7830 | imagemagick_error (image_wand); |
4917006b JV |
7831 | goto imagemagick_error; |
7832 | } | |
3de25479 | 7833 | } |
7574650a | 7834 | |
d66c4c7c | 7835 | /* Finally we are done manipulating the image. Figure out the |
e1dbe924 | 7836 | resulting width/height and transfer ownership to Emacs. */ |
4917006b JV |
7837 | height = MagickGetImageHeight (image_wand); |
7838 | width = MagickGetImageWidth (image_wand); | |
7574650a | 7839 | |
1b9b4cf4 CY |
7840 | /* Set the canvas background color to the frame or specified |
7841 | background, and flatten the image. Note: as of ImageMagick | |
7842 | 6.6.0, SVG image transparency is not handled properly | |
7843 | (e.g. etc/images/splash.svg shows a white background always). */ | |
7844 | { | |
7845 | MagickWand *new_wand; | |
7846 | MagickSetImageBackgroundColor (image_wand, bg_wand); | |
0e25d334 | 7847 | #ifdef HAVE_MAGICKMERGEIMAGELAYERS |
1b9b4cf4 | 7848 | new_wand = MagickMergeImageLayers (image_wand, MergeLayer); |
0e25d334 CY |
7849 | #else |
7850 | new_wand = MagickFlattenImages (image_wand); | |
7851 | #endif | |
1b9b4cf4 CY |
7852 | DestroyMagickWand (image_wand); |
7853 | image_wand = new_wand; | |
7854 | } | |
7855 | ||
3f791afe PE |
7856 | if (! (width <= INT_MAX && height <= INT_MAX |
7857 | && check_image_size (f, width, height))) | |
3de25479 JV |
7858 | { |
7859 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7860 | goto imagemagick_error; | |
7861 | } | |
7574650a | 7862 | |
3de25479 JV |
7863 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7864 | went ok. */ | |
3de25479 JV |
7865 | |
7866 | init_color_table (); | |
af008560 | 7867 | |
0e25d334 CY |
7868 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7869 | if (imagemagick_render_type != 0) | |
7870 | { | |
7871 | /* Magicexportimage is normally faster than pixelpushing. This | |
7872 | method is also well tested. Some aspects of this method are | |
7873 | ad-hoc and needs to be more researched. */ | |
7874 | int imagedepth = 24; /*MagickGetImageDepth(image_wand);*/ | |
7875 | const char *exportdepth = imagedepth <= 8 ? "I" : "BGRP"; /*"RGBP";*/ | |
7876 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
7877 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, | |
7878 | &ximg, &img->pixmap)) | |
7879 | { | |
7880 | #ifdef COLOR_TABLE_SUPPORT | |
7881 | free_color_table (); | |
7882 | #endif | |
7883 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); | |
7884 | goto imagemagick_error; | |
7885 | } | |
7886 | ||
7887 | /* Oddly, the below code doesn't seem to work:*/ | |
7888 | /* switch(ximg->bitmap_unit){ */ | |
7889 | /* case 8: */ | |
7890 | /* pixelwidth=CharPixel; */ | |
7891 | /* break; */ | |
7892 | /* case 16: */ | |
7893 | /* pixelwidth=ShortPixel; */ | |
7894 | /* break; */ | |
7895 | /* case 32: */ | |
7896 | /* pixelwidth=LongPixel; */ | |
7897 | /* break; */ | |
7898 | /* } */ | |
7899 | /* | |
7900 | Here im just guessing the format of the bitmap. | |
7901 | happens to work fine for: | |
7902 | - bw djvu images | |
7903 | on rgb display. | |
7904 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
7905 | */ | |
7906 | pixelwidth = CharPixel; /*??? TODO figure out*/ | |
7907 | MagickExportImagePixels (image_wand, 0, 0, width, height, | |
7908 | exportdepth, pixelwidth, ximg->data); | |
7909 | } | |
7910 | else | |
7911 | #endif /* HAVE_MAGICKEXPORTIMAGEPIXELS */ | |
4917006b | 7912 | { |
13464394 PE |
7913 | size_t image_height; |
7914 | ||
4917006b | 7915 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
d2a2d277 JV |
7916 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7917 | &ximg, &img->pixmap)) | |
4917006b | 7918 | { |
466cbae9 AS |
7919 | #ifdef COLOR_TABLE_SUPPORT |
7920 | free_color_table (); | |
7921 | #endif | |
5e617bc2 | 7922 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
4917006b JV |
7923 | goto imagemagick_error; |
7924 | } | |
7574650a | 7925 | |
53964682 | 7926 | /* Copy imagemagick image to x with primitive yet robust pixel |
4917006b | 7927 | pusher loop. This has been tested a lot with many different |
549a73b9 | 7928 | images. */ |
7574650a | 7929 | |
4917006b JV |
7930 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7931 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7932 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7933 | { |
466cbae9 AS |
7934 | #ifdef COLOR_TABLE_SUPPORT |
7935 | free_color_table (); | |
7936 | #endif | |
7937 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7938 | image_error ("Imagemagick pixel iterator creation failed", |
7939 | Qnil, Qnil); | |
3de25479 | 7940 | goto imagemagick_error; |
4917006b JV |
7941 | } |
7942 | ||
13464394 PE |
7943 | image_height = MagickGetImageHeight (image_wand); |
7944 | for (y = 0; y < image_height; y++) | |
4917006b JV |
7945 | { |
7946 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7947 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7948 | break; |
7949 | for (x = 0; x < (long) width; x++) | |
7950 | { | |
7951 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7952 | XPutPixel (ximg, x, y, |
7953 | lookup_rgb_color (f, | |
7954 | pixel.red, | |
7955 | pixel.green, | |
7956 | pixel.blue)); | |
4917006b JV |
7957 | } |
7958 | } | |
7959 | DestroyPixelIterator (iterator); | |
3de25479 | 7960 | } |
3ed42149 | 7961 | |
3de25479 JV |
7962 | #ifdef COLOR_TABLE_SUPPORT |
7963 | /* Remember colors allocated for this image. */ | |
7964 | img->colors = colors_in_color_table (&img->ncolors); | |
7965 | free_color_table (); | |
7966 | #endif /* COLOR_TABLE_SUPPORT */ | |
7967 | ||
3de25479 JV |
7968 | img->width = width; |
7969 | img->height = height; | |
7970 | ||
3de25479 JV |
7971 | /* Put the image into the pixmap, then free the X image and its |
7972 | buffer. */ | |
7973 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7974 | x_destroy_x_image (ximg); |
7975 | ||
f3700365 | 7976 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7977 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7978 | if (bg_wand) DestroyPixelWand (bg_wand); |
7979 | ||
03d32f1b | 7980 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7981 | MagickWandTerminus (); |
3de25479 JV |
7982 | |
7983 | return 1; | |
7984 | ||
7985 | imagemagick_error: | |
466cbae9 | 7986 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7987 | if (bg_wand) DestroyPixelWand (bg_wand); |
7988 | ||
f853f599 | 7989 | MagickWandTerminus (); |
3de25479 JV |
7990 | /* TODO more cleanup. */ |
7991 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7992 | return 0; |
7993 | } | |
7994 | ||
4917006b | 7995 | |
578098f3 | 7996 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is true if |
4917006b JV |
7997 | successful. this function will go into the imagemagick_type structure, and |
7998 | the prototype thus needs to be compatible with that structure. */ | |
7999 | ||
578098f3 | 8000 | static bool |
d66c4c7c | 8001 | imagemagick_load (struct frame *f, struct image *img) |
4917006b | 8002 | { |
578098f3 | 8003 | bool success_p = 0; |
4917006b JV |
8004 | Lisp_Object file_name; |
8005 | ||
8006 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8007 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8008 | if (STRINGP (file_name)) | |
8009 | { | |
8010 | Lisp_Object file; | |
4917006b JV |
8011 | |
8012 | file = x_find_image_file (file_name); | |
4917006b JV |
8013 | if (!STRINGP (file)) |
8014 | { | |
8015 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
8016 | return 0; |
8017 | } | |
33290528 | 8018 | success_p = imagemagick_load_image (f, img, 0, 0, SSDATA (file)); |
4917006b JV |
8019 | } |
8020 | /* Else its not a file, its a lisp object. Load the image from a | |
8021 | lisp object rather than a file. */ | |
8022 | else | |
8023 | { | |
8024 | Lisp_Object data; | |
8025 | ||
8026 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8027 | if (!STRINGP (data)) |
8028 | { | |
8029 | image_error ("Invalid image data `%s'", data, Qnil); | |
8030 | return 0; | |
8031 | } | |
d2a2d277 JV |
8032 | success_p = imagemagick_load_image (f, img, SDATA (data), |
8033 | SBYTES (data), NULL); | |
4917006b JV |
8034 | } |
8035 | ||
8036 | return success_p; | |
8037 | } | |
8038 | ||
a7ca3326 | 8039 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
8040 | doc: /* Return a list of image types supported by ImageMagick. |
8041 | Each entry in this list is a symbol named after an ImageMagick format | |
8042 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
8043 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
dd605cc4 | 8044 | You can also try the shell command: `identify -list format'. |
d66c4c7c CY |
8045 | |
8046 | Note that ImageMagick recognizes many file-types that Emacs does not | |
32d72c2f GM |
8047 | recognize as images, such as C. See `imagemagick-types-enable' |
8048 | and `imagemagick-types-inhibit'. */) | |
a8101f66 | 8049 | (void) |
3de25479 JV |
8050 | { |
8051 | Lisp_Object typelist = Qnil; | |
1ab0dee5 | 8052 | size_t numf = 0; |
3de25479 | 8053 | ExceptionInfo ex; |
2277de02 | 8054 | char **imtypes; |
3f791afe | 8055 | size_t i; |
3de25479 | 8056 | Lisp_Object Qimagemagicktype; |
2277de02 JD |
8057 | |
8058 | GetExceptionInfo(&ex); | |
8059 | imtypes = GetMagickList ("*", &numf, &ex); | |
8060 | DestroyExceptionInfo(&ex); | |
8061 | ||
4917006b JV |
8062 | for (i = 0; i < numf; i++) |
8063 | { | |
8064 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
8065 | typelist = Fcons (Qimagemagicktype, typelist); |
8066 | } | |
d1d7b339 | 8067 | return Fnreverse (typelist); |
3de25479 | 8068 | } |
7574650a | 8069 | |
3de25479 JV |
8070 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
8071 | ||
8072 | ||
4ef0d4d0 | 8073 | \f |
4ab27a43 GM |
8074 | /*********************************************************************** |
8075 | SVG | |
8076 | ***********************************************************************/ | |
8077 | ||
8078 | #if defined (HAVE_RSVG) | |
8079 | ||
8080 | /* Function prototypes. */ | |
8081 | ||
578098f3 PE |
8082 | static bool svg_image_p (Lisp_Object object); |
8083 | static bool svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 8084 | |
578098f3 PE |
8085 | static bool svg_load_image (struct frame *, struct image *, |
8086 | unsigned char *, ptrdiff_t); | |
4ab27a43 GM |
8087 | |
8088 | /* The symbol `svg' identifying images of this type. */ | |
8089 | ||
4b66faf3 | 8090 | static Lisp_Object Qsvg; |
4ab27a43 GM |
8091 | |
8092 | /* Indices of image specification fields in svg_format, below. */ | |
8093 | ||
8094 | enum svg_keyword_index | |
8095 | { | |
8096 | SVG_TYPE, | |
8097 | SVG_DATA, | |
8098 | SVG_FILE, | |
8099 | SVG_ASCENT, | |
8100 | SVG_MARGIN, | |
8101 | SVG_RELIEF, | |
8102 | SVG_ALGORITHM, | |
8103 | SVG_HEURISTIC_MASK, | |
8104 | SVG_MASK, | |
8105 | SVG_BACKGROUND, | |
8106 | SVG_LAST | |
8107 | }; | |
8108 | ||
8109 | /* Vector of image_keyword structures describing the format | |
8110 | of valid user-defined image specifications. */ | |
8111 | ||
91433552 | 8112 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
8113 | { |
8114 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8115 | {":data", IMAGE_STRING_VALUE, 0}, | |
8116 | {":file", IMAGE_STRING_VALUE, 0}, | |
8117 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8118 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ab27a43 GM |
8119 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8120 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8121 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8122 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8123 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8124 | }; | |
8125 | ||
bb4d86b4 | 8126 | #ifdef HAVE_NTGUI |
578098f3 | 8127 | static bool init_svg_functions (void); |
bb4d86b4 CY |
8128 | #else |
8129 | #define init_svg_functions NULL | |
8130 | #endif | |
8131 | ||
4ab27a43 GM |
8132 | /* Structure describing the image type `svg'. Its the same type of |
8133 | structure defined for all image formats, handled by emacs image | |
8134 | functions. See struct image_type in dispextern.h. */ | |
8135 | ||
8136 | static struct image_type svg_type = | |
8137 | { | |
4ab27a43 | 8138 | &Qsvg, |
4ab27a43 | 8139 | svg_image_p, |
4ab27a43 | 8140 | svg_load, |
4ab27a43 | 8141 | x_clear_image, |
bb4d86b4 | 8142 | init_svg_functions, |
c21e6151 | 8143 | NULL |
4ab27a43 GM |
8144 | }; |
8145 | ||
8146 | ||
578098f3 | 8147 | /* Return true if OBJECT is a valid SVG image specification. Do |
4ab27a43 GM |
8148 | this by calling parse_image_spec and supplying the keywords that |
8149 | identify the SVG format. */ | |
8150 | ||
578098f3 | 8151 | static bool |
d3da34e0 | 8152 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
8153 | { |
8154 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 8155 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
8156 | |
8157 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8158 | return 0; | |
8159 | ||
8160 | /* Must specify either the :data or :file keyword. */ | |
8161 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8162 | } | |
8163 | ||
8164 | #include <librsvg/rsvg.h> | |
8165 | ||
0fda9b75 | 8166 | #ifdef WINDOWSNT |
5fc9fdeb JR |
8167 | |
8168 | /* SVG library functions. */ | |
df61c790 AS |
8169 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
8170 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
8171 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
8172 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
8173 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
df61c790 AS |
8174 | |
8175 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
8176 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
8177 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
8178 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
8179 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
8180 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
8181 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
8182 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
8183 | ||
8184 | DEF_IMGLIB_FN (void, g_type_init); | |
8185 | DEF_IMGLIB_FN (void, g_object_unref); | |
8186 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 8187 | |
df23bf08 | 8188 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb | 8189 | |
578098f3 | 8190 | static bool |
d07ff9db | 8191 | init_svg_functions (void) |
5fc9fdeb | 8192 | { |
df23bf08 | 8193 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb | 8194 | |
d07ff9db CY |
8195 | if (!(glib = w32_delayed_load (Qglib)) |
8196 | || !(gobject = w32_delayed_load (Qgobject)) | |
8197 | || !(gdklib = w32_delayed_load (Qgdk_pixbuf)) | |
8198 | || !(library = w32_delayed_load (Qsvg))) | |
5fc9fdeb JR |
8199 | return 0; |
8200 | ||
8201 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8202 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8203 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8204 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8205 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
5fc9fdeb JR |
8206 | |
8207 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8208 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8209 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8210 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8211 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8212 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8213 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8214 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8215 | ||
df23bf08 JR |
8216 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8217 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8218 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8219 | |
5fc9fdeb JR |
8220 | return 1; |
8221 | } | |
4ab27a43 | 8222 | |
5fc9fdeb JR |
8223 | #else |
8224 | /* The following aliases for library functions allow dynamic loading | |
8225 | to be used on some platforms. */ | |
4ab27a43 | 8226 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8227 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8228 | #define fn_rsvg_handle_write rsvg_handle_write |
8229 | #define fn_rsvg_handle_close rsvg_handle_close | |
8230 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
4ab27a43 | 8231 | |
5fc9fdeb JR |
8232 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8233 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8234 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8235 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8236 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8237 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8238 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8239 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8240 | ||
5fc9fdeb JR |
8241 | #define fn_g_type_init g_type_init |
8242 | #define fn_g_object_unref g_object_unref | |
8243 | #define fn_g_error_free g_error_free | |
0fda9b75 | 8244 | #endif /* !WINDOWSNT */ |
4ab27a43 | 8245 | |
578098f3 PE |
8246 | /* Load SVG image IMG for use on frame F. Value is true if |
8247 | successful. */ | |
4ab27a43 | 8248 | |
578098f3 | 8249 | static bool |
d3da34e0 | 8250 | svg_load (struct frame *f, struct image *img) |
4ab27a43 | 8251 | { |
578098f3 | 8252 | bool success_p = 0; |
4ab27a43 GM |
8253 | Lisp_Object file_name; |
8254 | ||
8255 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8256 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8257 | if (STRINGP (file_name)) | |
8258 | { | |
8259 | Lisp_Object file; | |
8260 | unsigned char *contents; | |
dd52fcea | 8261 | ptrdiff_t size; |
4ab27a43 GM |
8262 | |
8263 | file = x_find_image_file (file_name); | |
4ab27a43 | 8264 | if (!STRINGP (file)) |
c21e6151 YM |
8265 | { |
8266 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8267 | return 0; |
8268 | } | |
8269 | ||
4ab27a43 | 8270 | /* Read the entire file into memory. */ |
33290528 | 8271 | contents = slurp_file (SSDATA (file), &size); |
4ab27a43 | 8272 | if (contents == NULL) |
c21e6151 YM |
8273 | { |
8274 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8275 | return 0; |
8276 | } | |
4ab27a43 | 8277 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8278 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8279 | xfree (contents); |
4ab27a43 GM |
8280 | } |
8281 | /* Else its not a file, its a lisp object. Load the image from a | |
8282 | lisp object rather than a file. */ | |
8283 | else | |
8284 | { | |
8285 | Lisp_Object data; | |
8286 | ||
8287 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8288 | if (!STRINGP (data)) |
8289 | { | |
8290 | image_error ("Invalid image data `%s'", data, Qnil); | |
8291 | return 0; | |
8292 | } | |
4ab27a43 GM |
8293 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8294 | } | |
8295 | ||
8296 | return success_p; | |
8297 | } | |
8298 | ||
bbe6f2aa JB |
8299 | /* svg_load_image is a helper function for svg_load, which does the |
8300 | actual loading given contents and size, apart from frame and image | |
8301 | structures, passed from svg_load. | |
4ab27a43 | 8302 | |
bbe6f2aa | 8303 | Uses librsvg to do most of the image processing. |
c21e6151 | 8304 | |
578098f3 PE |
8305 | Returns true when successful. */ |
8306 | static bool | |
d3da34e0 JB |
8307 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8308 | struct image *img, /* Pointer to emacs image structure. */ | |
8309 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
dd52fcea | 8310 | ptrdiff_t size) /* Size of data in bytes. */ |
4ab27a43 GM |
8311 | { |
8312 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8313 | RsvgDimensionData dimension_data; |
33290528 | 8314 | GError *err = NULL; |
4ab27a43 GM |
8315 | GdkPixbuf *pixbuf; |
8316 | int width; | |
8317 | int height; | |
8318 | const guint8 *pixels; | |
8319 | int rowstride; | |
8320 | XImagePtr ximg; | |
c21e6151 | 8321 | Lisp_Object specified_bg; |
4ab27a43 GM |
8322 | XColor background; |
8323 | int x; | |
8324 | int y; | |
8325 | ||
8326 | /* g_type_init is a glib function that must be called prior to using | |
8327 | gnome type library functions. */ | |
5fc9fdeb | 8328 | fn_g_type_init (); |
4ab27a43 | 8329 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8330 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8331 | |
8332 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
33290528 PE |
8333 | fn_rsvg_handle_write (rsvg_handle, contents, size, &err); |
8334 | if (err) goto rsvg_error; | |
4ab27a43 GM |
8335 | |
8336 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8337 | for further writes. */ | |
33290528 PE |
8338 | fn_rsvg_handle_close (rsvg_handle, &err); |
8339 | if (err) goto rsvg_error; | |
e025c9c2 CY |
8340 | |
8341 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8342 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8343 | { |
8344 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8345 | goto rsvg_error; | |
8346 | } | |
b2996e57 | 8347 | |
4ab27a43 GM |
8348 | /* We can now get a valid pixel buffer from the svg file, if all |
8349 | went ok. */ | |
df61c790 | 8350 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8351 | if (!pixbuf) goto rsvg_error; |
8352 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8353 | |
8354 | /* Extract some meta data from the svg handle. */ | |
8355 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8356 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8357 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8358 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8359 | ||
8360 | /* Validate the svg meta data. */ | |
8361 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8362 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8363 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8364 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8365 | ||
8366 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8367 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8368 | { | |
5fc9fdeb | 8369 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8370 | return 0; |
8371 | } | |
4ab27a43 GM |
8372 | |
8373 | init_color_table (); | |
8374 | ||
c21e6151 YM |
8375 | /* Handle alpha channel by combining the image with a background |
8376 | color. */ | |
8377 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 | 8378 | if (!STRINGP (specified_bg) |
33290528 | 8379 | || !x_defined_color (f, SSDATA (specified_bg), &background, 0)) |
c21e6151 | 8380 | { |
d7e008d0 | 8381 | #ifndef HAVE_NS |
c21e6151 YM |
8382 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8383 | x_query_color (f, &background); | |
d7e008d0 | 8384 | #else |
ed3751c8 | 8385 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8386 | #endif |
c21e6151 | 8387 | } |
4ab27a43 | 8388 | |
8d3c4e79 CY |
8389 | /* SVG pixmaps specify transparency in the last byte, so right |
8390 | shift 8 bits to get rid of it, since emacs doesn't support | |
8391 | transparency. */ | |
8392 | background.red >>= 8; | |
8393 | background.green >>= 8; | |
8394 | background.blue >>= 8; | |
8395 | ||
4ab27a43 GM |
8396 | /* This loop handles opacity values, since Emacs assumes |
8397 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8398 | calculating the resulting color, given the transparency of the |
8399 | pixel, and the image background color. */ | |
4ab27a43 GM |
8400 | for (y = 0; y < height; ++y) |
8401 | { | |
8402 | for (x = 0; x < width; ++x) | |
8403 | { | |
13464394 PE |
8404 | int red; |
8405 | int green; | |
8406 | int blue; | |
8407 | int opacity; | |
4ab27a43 GM |
8408 | |
8409 | red = *pixels++; | |
8410 | green = *pixels++; | |
8411 | blue = *pixels++; | |
8412 | opacity = *pixels++; | |
8413 | ||
8414 | red = ((red * opacity) | |
8415 | + (background.red * ((1 << 8) - opacity))); | |
8416 | green = ((green * opacity) | |
8417 | + (background.green * ((1 << 8) - opacity))); | |
8418 | blue = ((blue * opacity) | |
8419 | + (background.blue * ((1 << 8) - opacity))); | |
8420 | ||
8421 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8422 | } | |
8423 | ||
8424 | pixels += rowstride - 4 * width; | |
8425 | } | |
8426 | ||
8427 | #ifdef COLOR_TABLE_SUPPORT | |
8428 | /* Remember colors allocated for this image. */ | |
8429 | img->colors = colors_in_color_table (&img->ncolors); | |
8430 | free_color_table (); | |
8431 | #endif /* COLOR_TABLE_SUPPORT */ | |
8432 | ||
5fc9fdeb | 8433 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8434 | |
c21e6151 YM |
8435 | img->width = width; |
8436 | img->height = height; | |
8437 | ||
8438 | /* Maybe fill in the background field while we have ximg handy. | |
8439 | Casting avoids a GCC warning. */ | |
8440 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8441 | ||
4ab27a43 GM |
8442 | /* Put the image into the pixmap, then free the X image and its |
8443 | buffer. */ | |
8444 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8445 | x_destroy_x_image (ximg); | |
8446 | ||
4ab27a43 GM |
8447 | return 1; |
8448 | ||
8449 | rsvg_error: | |
e025c9c2 | 8450 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8451 | /* FIXME: Use error->message so the user knows what is the actual |
8452 | problem with the image. */ | |
8453 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
33290528 | 8454 | fn_g_error_free (err); |
4ab27a43 GM |
8455 | return 0; |
8456 | } | |
8457 | ||
8458 | #endif /* defined (HAVE_RSVG) */ | |
8459 | ||
8460 | ||
8461 | ||
4ef0d4d0 KS |
8462 | \f |
8463 | /*********************************************************************** | |
8464 | Ghostscript | |
8465 | ***********************************************************************/ | |
8466 | ||
8467 | #ifdef HAVE_X_WINDOWS | |
8468 | #define HAVE_GHOSTSCRIPT 1 | |
8469 | #endif /* HAVE_X_WINDOWS */ | |
8470 | ||
4ef0d4d0 KS |
8471 | #ifdef HAVE_GHOSTSCRIPT |
8472 | ||
578098f3 PE |
8473 | static bool gs_image_p (Lisp_Object object); |
8474 | static bool gs_load (struct frame *f, struct image *img); | |
f57e2426 | 8475 | static void gs_clear_image (struct frame *f, struct image *img); |
4ef0d4d0 KS |
8476 | |
8477 | /* Keyword symbols. */ | |
8478 | ||
955cbe7b | 8479 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8480 | |
8481 | /* Indices of image specification fields in gs_format, below. */ | |
8482 | ||
8483 | enum gs_keyword_index | |
8484 | { | |
8485 | GS_TYPE, | |
8486 | GS_PT_WIDTH, | |
8487 | GS_PT_HEIGHT, | |
8488 | GS_FILE, | |
8489 | GS_LOADER, | |
8490 | GS_BOUNDING_BOX, | |
8491 | GS_ASCENT, | |
8492 | GS_MARGIN, | |
8493 | GS_RELIEF, | |
8494 | GS_ALGORITHM, | |
8495 | GS_HEURISTIC_MASK, | |
8496 | GS_MASK, | |
8497 | GS_BACKGROUND, | |
8498 | GS_LAST | |
8499 | }; | |
8500 | ||
8501 | /* Vector of image_keyword structures describing the format | |
8502 | of valid user-defined image specifications. */ | |
8503 | ||
91433552 | 8504 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8505 | { |
8506 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8507 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8508 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8509 | {":file", IMAGE_STRING_VALUE, 1}, | |
8510 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8511 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8512 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8513 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
8514 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8515 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8516 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8517 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8518 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8519 | }; | |
8520 | ||
8521 | /* Structure describing the image type `ghostscript'. */ | |
8522 | ||
8523 | static struct image_type gs_type = | |
8524 | { | |
8525 | &Qpostscript, | |
8526 | gs_image_p, | |
8527 | gs_load, | |
8528 | gs_clear_image, | |
d07ff9db | 8529 | NULL, |
4ef0d4d0 KS |
8530 | NULL |
8531 | }; | |
8532 | ||
8533 | ||
8534 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8535 | ||
8536 | static void | |
d3da34e0 | 8537 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 8538 | { |
4ef0d4d0 KS |
8539 | x_clear_image (f, img); |
8540 | } | |
8541 | ||
8542 | ||
578098f3 | 8543 | /* Return true if OBJECT is a valid Ghostscript image |
4ef0d4d0 KS |
8544 | specification. */ |
8545 | ||
578098f3 | 8546 | static bool |
d3da34e0 | 8547 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8548 | { |
8549 | struct image_keyword fmt[GS_LAST]; | |
8550 | Lisp_Object tem; | |
8551 | int i; | |
8552 | ||
72af86bd | 8553 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8554 | |
8555 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8556 | return 0; | |
8557 | ||
8558 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8559 | tem = fmt[GS_BOUNDING_BOX].value; | |
8560 | if (CONSP (tem)) | |
8561 | { | |
8562 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8563 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8564 | return 0; | |
8565 | if (!NILP (tem)) | |
8566 | return 0; | |
8567 | } | |
8568 | else if (VECTORP (tem)) | |
8569 | { | |
77b37c05 | 8570 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
8571 | return 0; |
8572 | for (i = 0; i < 4; ++i) | |
28be1ada | 8573 | if (!INTEGERP (AREF (tem, i))) |
4ef0d4d0 KS |
8574 | return 0; |
8575 | } | |
8576 | else | |
8577 | return 0; | |
8578 | ||
8579 | return 1; | |
8580 | } | |
8581 | ||
8582 | ||
578098f3 | 8583 | /* Load Ghostscript image IMG for use on frame F. Value is true |
4ef0d4d0 KS |
8584 | if successful. */ |
8585 | ||
578098f3 | 8586 | static bool |
d3da34e0 | 8587 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 | 8588 | { |
13464394 PE |
8589 | uprintmax_t printnum1, printnum2; |
8590 | char buffer[sizeof " " + INT_STRLEN_BOUND (printmax_t)]; | |
4ef0d4d0 | 8591 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; |
4ef0d4d0 KS |
8592 | Lisp_Object frame; |
8593 | double in_width, in_height; | |
8594 | Lisp_Object pixel_colors = Qnil; | |
8595 | ||
8596 | /* Compute pixel size of pixmap needed from the given size in the | |
8597 | image specification. Sizes in the specification are in pt. 1 pt | |
8598 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8599 | info. */ | |
8600 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8601 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
13464394 | 8602 | in_width *= FRAME_X_DISPLAY_INFO (f)->resx; |
4ef0d4d0 | 8603 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); |
7574650a | 8604 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
13464394 | 8605 | in_height *= FRAME_X_DISPLAY_INFO (f)->resy; |
4ef0d4d0 | 8606 | |
13464394 PE |
8607 | if (! (in_width <= INT_MAX && in_height <= INT_MAX |
8608 | && check_image_size (f, in_width, in_height))) | |
f1f25b99 | 8609 | { |
10ea2b82 | 8610 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8611 | return 0; |
8612 | } | |
13464394 PE |
8613 | img->width = in_width; |
8614 | img->height = in_height; | |
f1f25b99 | 8615 | |
4ef0d4d0 | 8616 | /* Create the pixmap. */ |
a54e2c05 | 8617 | eassert (img->pixmap == NO_PIXMAP); |
4ef0d4d0 | 8618 | |
ca4aa935 PE |
8619 | if (x_check_image_size (0, img->width, img->height)) |
8620 | { | |
8621 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
4d7e6e51 | 8622 | block_input (); |
ca4aa935 PE |
8623 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
8624 | img->width, img->height, | |
8625 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
4d7e6e51 | 8626 | unblock_input (); |
ca4aa935 | 8627 | } |
4ef0d4d0 KS |
8628 | |
8629 | if (!img->pixmap) | |
8630 | { | |
8631 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8632 | return 0; | |
8633 | } | |
8634 | ||
8635 | /* Call the loader to fill the pixmap. It returns a process object | |
8636 | if successful. We do not record_unwind_protect here because | |
8637 | other places in redisplay like calling window scroll functions | |
8638 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
13464394 PE |
8639 | printnum1 = FRAME_X_WINDOW (f); |
8640 | printnum2 = img->pixmap; | |
620f13b0 | 8641 | window_and_pixmap_id |
a8290ec3 | 8642 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); |
4ef0d4d0 | 8643 | |
13464394 PE |
8644 | printnum1 = FRAME_FOREGROUND_PIXEL (f); |
8645 | printnum2 = FRAME_BACKGROUND_PIXEL (f); | |
a8290ec3 DA |
8646 | pixel_colors |
8647 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
8648 | |
8649 | XSETFRAME (frame, f); | |
8650 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8651 | if (NILP (loader)) | |
8652 | loader = intern ("gs-load-image"); | |
8653 | ||
b50691aa CY |
8654 | img->lisp_data = call6 (loader, frame, img->spec, |
8655 | make_number (img->width), | |
8656 | make_number (img->height), | |
8657 | window_and_pixmap_id, | |
8658 | pixel_colors); | |
8659 | return PROCESSP (img->lisp_data); | |
4ef0d4d0 KS |
8660 | } |
8661 | ||
8662 | ||
8663 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8664 | frame F. Called from XTread_socket when receiving an event | |
8665 | telling Emacs that Ghostscript has finished drawing. */ | |
8666 | ||
8667 | void | |
d3da34e0 | 8668 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8669 | { |
354884c4 | 8670 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 PE |
8671 | int class; |
8672 | ptrdiff_t i; | |
4ef0d4d0 KS |
8673 | struct image *img; |
8674 | ||
8675 | /* Find the image containing PIXMAP. */ | |
8676 | for (i = 0; i < c->used; ++i) | |
8677 | if (c->images[i]->pixmap == pixmap) | |
8678 | break; | |
8679 | ||
8680 | /* Should someone in between have cleared the image cache, for | |
8681 | instance, give up. */ | |
8682 | if (i == c->used) | |
8683 | return; | |
8684 | ||
8685 | /* Kill the GS process. We should have found PIXMAP in the image | |
8686 | cache and its image should contain a process object. */ | |
8687 | img = c->images[i]; | |
a54e2c05 | 8688 | eassert (PROCESSP (img->lisp_data)); |
b50691aa CY |
8689 | Fkill_process (img->lisp_data, Qnil); |
8690 | img->lisp_data = Qnil; | |
4ef0d4d0 KS |
8691 | |
8692 | #if defined (HAVE_X_WINDOWS) | |
8693 | ||
8694 | /* On displays with a mutable colormap, figure out the colors | |
8695 | allocated for the image by looking at the pixels of an XImage for | |
8696 | img->pixmap. */ | |
8697 | class = FRAME_X_VISUAL (f)->class; | |
8698 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8699 | { | |
8700 | XImagePtr ximg; | |
8701 | ||
4d7e6e51 | 8702 | block_input (); |
4ef0d4d0 KS |
8703 | |
8704 | /* Try to get an XImage for img->pixmep. */ | |
8705 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8706 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8707 | if (ximg) | |
8708 | { | |
8709 | int x, y; | |
8710 | ||
8711 | /* Initialize the color table. */ | |
8712 | init_color_table (); | |
8713 | ||
8714 | /* For each pixel of the image, look its color up in the | |
8715 | color table. After having done so, the color table will | |
8716 | contain an entry for each color used by the image. */ | |
8717 | for (y = 0; y < img->height; ++y) | |
8718 | for (x = 0; x < img->width; ++x) | |
8719 | { | |
8720 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8721 | lookup_pixel_color (f, pixel); | |
8722 | } | |
8723 | ||
8724 | /* Record colors in the image. Free color table and XImage. */ | |
8725 | #ifdef COLOR_TABLE_SUPPORT | |
8726 | img->colors = colors_in_color_table (&img->ncolors); | |
8727 | free_color_table (); | |
8728 | #endif | |
8729 | XDestroyImage (ximg); | |
8730 | ||
8731 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8732 | here, we get a BadAccess later in x_clear_image when | |
8733 | freeing the colors. */ | |
8734 | /* We have allocated colors once, but Ghostscript has also | |
8735 | allocated colors on behalf of us. So, to get the | |
8736 | reference counts right, free them once. */ | |
8737 | if (img->ncolors) | |
8738 | x_free_colors (f, img->colors, img->ncolors); | |
8739 | #endif | |
8740 | } | |
8741 | else | |
8742 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8743 | img->spec, Qnil); | |
8744 | ||
4d7e6e51 | 8745 | unblock_input (); |
4ef0d4d0 KS |
8746 | } |
8747 | #endif /* HAVE_X_WINDOWS */ | |
8748 | ||
8749 | /* Now that we have the pixmap, compute mask and transform the | |
8750 | image if requested. */ | |
4d7e6e51 | 8751 | block_input (); |
4ef0d4d0 | 8752 | postprocess_image (f, img); |
4d7e6e51 | 8753 | unblock_input (); |
4ef0d4d0 KS |
8754 | } |
8755 | ||
8756 | #endif /* HAVE_GHOSTSCRIPT */ | |
8757 | ||
8758 | \f | |
8759 | /*********************************************************************** | |
8760 | Tests | |
8761 | ***********************************************************************/ | |
8762 | ||
e509cfa6 | 8763 | #ifdef GLYPH_DEBUG |
4ef0d4d0 | 8764 | |
a7ca3326 | 8765 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 8766 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 8767 | (Lisp_Object spec) |
4ef0d4d0 KS |
8768 | { |
8769 | return valid_image_p (spec) ? Qt : Qnil; | |
8770 | } | |
8771 | ||
8772 | ||
a7ca3326 | 8773 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 8774 | (Lisp_Object spec) |
4ef0d4d0 | 8775 | { |
13464394 | 8776 | ptrdiff_t id = -1; |
4ef0d4d0 KS |
8777 | |
8778 | if (valid_image_p (spec)) | |
8779 | id = lookup_image (SELECTED_FRAME (), spec); | |
8780 | ||
8781 | debug_print (spec); | |
8782 | return make_number (id); | |
8783 | } | |
8784 | ||
e509cfa6 | 8785 | #endif /* GLYPH_DEBUG */ |
4ef0d4d0 KS |
8786 | |
8787 | ||
8788 | /*********************************************************************** | |
8789 | Initialization | |
8790 | ***********************************************************************/ | |
8791 | ||
d07ff9db | 8792 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 1, 1, 0, |
0855eb52 JB |
8793 | doc: /* Initialize image library implementing image type TYPE. |
8794 | Return non-nil if TYPE is a supported image type. | |
8795 | ||
d07ff9db CY |
8796 | If image libraries are loaded dynamically (currently only the case on |
8797 | MS-Windows), load the library for TYPE if it is not yet loaded, using | |
8798 | the library file(s) specified by `dynamic-library-alist'. */) | |
8799 | (Lisp_Object type) | |
0855eb52 | 8800 | { |
d07ff9db | 8801 | return lookup_image_type (type) ? Qt : Qnil; |
bb4d86b4 | 8802 | } |
0855eb52 | 8803 | |
bb4d86b4 | 8804 | /* Look up image type TYPE, and return a pointer to its image_type |
d07ff9db | 8805 | structure. Return 0 if TYPE is not a known image type. */ |
bb4d86b4 CY |
8806 | |
8807 | static struct image_type * | |
d07ff9db | 8808 | lookup_image_type (Lisp_Object type) |
bb4d86b4 | 8809 | { |
2f142cc5 | 8810 | /* Types pbm and xbm are built-in and always available. */ |
bb4d86b4 | 8811 | if (EQ (type, Qpbm)) |
d07ff9db | 8812 | return define_image_type (&pbm_type); |
bb4d86b4 CY |
8813 | |
8814 | if (EQ (type, Qxbm)) | |
d07ff9db | 8815 | return define_image_type (&xbm_type); |
2f142cc5 | 8816 | |
9e2a2647 | 8817 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8818 | if (EQ (type, Qxpm)) |
d07ff9db | 8819 | return define_image_type (&xpm_type); |
0855eb52 JB |
8820 | #endif |
8821 | ||
9e2a2647 | 8822 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8823 | if (EQ (type, Qjpeg)) |
d07ff9db | 8824 | return define_image_type (&jpeg_type); |
0855eb52 JB |
8825 | #endif |
8826 | ||
9e2a2647 | 8827 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8828 | if (EQ (type, Qtiff)) |
d07ff9db | 8829 | return define_image_type (&tiff_type); |
0855eb52 JB |
8830 | #endif |
8831 | ||
9e2a2647 | 8832 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8833 | if (EQ (type, Qgif)) |
d07ff9db | 8834 | return define_image_type (&gif_type); |
0855eb52 JB |
8835 | #endif |
8836 | ||
9e2a2647 | 8837 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8838 | if (EQ (type, Qpng)) |
d07ff9db | 8839 | return define_image_type (&png_type); |
0855eb52 JB |
8840 | #endif |
8841 | ||
4ab27a43 GM |
8842 | #if defined (HAVE_RSVG) |
8843 | if (EQ (type, Qsvg)) | |
d07ff9db | 8844 | return define_image_type (&svg_type); |
4ab27a43 | 8845 | #endif |
c21e6151 | 8846 | |
3de25479 | 8847 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 8848 | if (EQ (type, Qimagemagick)) |
d07ff9db | 8849 | return define_image_type (&imagemagick_type); |
3de25479 JV |
8850 | #endif |
8851 | ||
0855eb52 JB |
8852 | #ifdef HAVE_GHOSTSCRIPT |
8853 | if (EQ (type, Qpostscript)) | |
d07ff9db | 8854 | return define_image_type (&gs_type); |
0855eb52 JB |
8855 | #endif |
8856 | ||
bb4d86b4 | 8857 | return NULL; |
0855eb52 JB |
8858 | } |
8859 | ||
aa15c6bb JB |
8860 | /* Reset image_types before dumping. |
8861 | Called from Fdump_emacs. */ | |
8862 | ||
8863 | void | |
8864 | reset_image_types (void) | |
8865 | { | |
8866 | while (image_types) | |
8867 | { | |
8868 | struct image_type *next = image_types->next; | |
8869 | xfree (image_types); | |
8870 | image_types = next; | |
8871 | } | |
0855eb52 JB |
8872 | } |
8873 | ||
4ef0d4d0 | 8874 | void |
d3da34e0 | 8875 | syms_of_image (void) |
4ef0d4d0 | 8876 | { |
aa15c6bb | 8877 | /* Initialize this only once; it will be reset before dumping. */ |
6e6fc3fd RS |
8878 | image_types = NULL; |
8879 | ||
91af3942 | 8880 | /* Must be defined now because we're going to update it below, while |
0855eb52 | 8881 | defining the supported image types. */ |
29208e82 | 8882 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 8883 | doc: /* List of potentially supported image types. |
bbe6f2aa | 8884 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
8885 | To check whether it is really supported, use `image-type-available-p'. */); |
8886 | Vimage_types = Qnil; | |
8887 | ||
29208e82 | 8888 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
8889 | doc: /* Maximum size of images. |
8890 | Emacs will not load an image into memory if its pixel width or | |
8891 | pixel height exceeds this limit. | |
8892 | ||
8893 | If the value is an integer, it directly specifies the maximum | |
8894 | image height and width, measured in pixels. If it is a floating | |
8895 | point number, it specifies the maximum image height and width | |
8896 | as a ratio to the frame height and width. If the value is | |
8897 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8898 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8899 | ||
1100a63c CY |
8900 | DEFSYM (Qcount, "count"); |
8901 | DEFSYM (Qextension_data, "extension-data"); | |
8902 | DEFSYM (Qdelay, "delay"); | |
8903 | ||
8904 | DEFSYM (QCascent, ":ascent"); | |
8905 | DEFSYM (QCmargin, ":margin"); | |
8906 | DEFSYM (QCrelief, ":relief"); | |
8907 | DEFSYM (QCconversion, ":conversion"); | |
8908 | DEFSYM (QCcolor_symbols, ":color-symbols"); | |
8909 | DEFSYM (QCheuristic_mask, ":heuristic-mask"); | |
8910 | DEFSYM (QCindex, ":index"); | |
8911 | DEFSYM (QCgeometry, ":geometry"); | |
8912 | DEFSYM (QCcrop, ":crop"); | |
8913 | DEFSYM (QCrotation, ":rotation"); | |
8914 | DEFSYM (QCmatrix, ":matrix"); | |
8915 | DEFSYM (QCcolor_adjustment, ":color-adjustment"); | |
8916 | DEFSYM (QCmask, ":mask"); | |
8917 | ||
8918 | DEFSYM (Qlaplace, "laplace"); | |
8919 | DEFSYM (Qemboss, "emboss"); | |
8920 | DEFSYM (Qedge_detection, "edge-detection"); | |
8921 | DEFSYM (Qheuristic, "heuristic"); | |
8922 | ||
8923 | DEFSYM (Qpostscript, "postscript"); | |
4ef0d4d0 | 8924 | #ifdef HAVE_GHOSTSCRIPT |
5fc9fdeb | 8925 | ADD_IMAGE_TYPE (Qpostscript); |
1100a63c CY |
8926 | DEFSYM (QCloader, ":loader"); |
8927 | DEFSYM (QCbounding_box, ":bounding-box"); | |
8928 | DEFSYM (QCpt_width, ":pt-width"); | |
8929 | DEFSYM (QCpt_height, ":pt-height"); | |
4ef0d4d0 KS |
8930 | #endif /* HAVE_GHOSTSCRIPT */ |
8931 | ||
5be1c984 | 8932 | #ifdef HAVE_NTGUI |
1100a63c | 8933 | DEFSYM (Qlibpng_version, "libpng-version"); |
0514b4be | 8934 | Fset (Qlibpng_version, |
5be1c984 | 8935 | #if HAVE_PNG |
0514b4be | 8936 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8937 | #else |
0514b4be | 8938 | make_number (-1) |
5be1c984 | 8939 | #endif |
0514b4be | 8940 | ); |
5be1c984 EZ |
8941 | #endif |
8942 | ||
bb4d86b4 CY |
8943 | DEFSYM (Qpbm, "pbm"); |
8944 | ADD_IMAGE_TYPE (Qpbm); | |
8945 | ||
8946 | DEFSYM (Qxbm, "xbm"); | |
8947 | ADD_IMAGE_TYPE (Qxbm); | |
8948 | ||
9e2a2647 | 8949 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
1100a63c | 8950 | DEFSYM (Qxpm, "xpm"); |
5fc9fdeb | 8951 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8952 | #endif |
8953 | ||
9e2a2647 | 8954 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
1100a63c | 8955 | DEFSYM (Qjpeg, "jpeg"); |
5fc9fdeb | 8956 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8957 | #endif |
8958 | ||
9e2a2647 | 8959 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
1100a63c | 8960 | DEFSYM (Qtiff, "tiff"); |
5fc9fdeb | 8961 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8962 | #endif |
8963 | ||
9e2a2647 | 8964 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
1100a63c | 8965 | DEFSYM (Qgif, "gif"); |
5fc9fdeb | 8966 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8967 | #endif |
8968 | ||
9e2a2647 | 8969 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
1100a63c | 8970 | DEFSYM (Qpng, "png"); |
5fc9fdeb | 8971 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8972 | #endif |
8973 | ||
3de25479 | 8974 | #if defined (HAVE_IMAGEMAGICK) |
1100a63c | 8975 | DEFSYM (Qimagemagick, "imagemagick"); |
3de25479 JV |
8976 | ADD_IMAGE_TYPE (Qimagemagick); |
8977 | #endif | |
7574650a | 8978 | |
4ab27a43 | 8979 | #if defined (HAVE_RSVG) |
1100a63c | 8980 | DEFSYM (Qsvg, "svg"); |
5fc9fdeb JR |
8981 | ADD_IMAGE_TYPE (Qsvg); |
8982 | #ifdef HAVE_NTGUI | |
df23bf08 | 8983 | /* Other libraries used directly by svg code. */ |
1100a63c CY |
8984 | DEFSYM (Qgdk_pixbuf, "gdk-pixbuf"); |
8985 | DEFSYM (Qglib, "glib"); | |
8986 | DEFSYM (Qgobject, "gobject"); | |
5fc9fdeb JR |
8987 | #endif /* HAVE_NTGUI */ |
8988 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8989 | |
0855eb52 | 8990 | defsubr (&Sinit_image_library); |
7574650a | 8991 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8992 | defsubr (&Simagemagick_types); |
7574650a | 8993 | #endif |
4ef0d4d0 | 8994 | defsubr (&Sclear_image_cache); |
110683ad | 8995 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8996 | defsubr (&Simage_size); |
8997 | defsubr (&Simage_mask_p); | |
1546c559 | 8998 | defsubr (&Simage_metadata); |
4ef0d4d0 | 8999 | |
e509cfa6 | 9000 | #ifdef GLYPH_DEBUG |
4ef0d4d0 KS |
9001 | defsubr (&Simagep); |
9002 | defsubr (&Slookup_image); | |
9003 | #endif | |
9004 | ||
29208e82 | 9005 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 9006 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 9007 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
9008 | A cross is always drawn on black & white displays. */); |
9009 | cross_disabled_images = 0; | |
9010 | ||
29208e82 | 9011 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 KS |
9012 | doc: /* List of directories to search for window system bitmap files. */); |
9013 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
9014 | ||
29208e82 | 9015 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
9016 | doc: /* Maximum time after which images are removed from the cache. |
9017 | When an image has not been displayed this many seconds, Emacs | |
9018 | automatically removes it from the image cache. If the cache contains | |
9019 | a large number of images, the actual eviction time may be shorter. | |
9020 | The value can also be nil, meaning the cache is never cleared. | |
9021 | ||
9022 | The function `clear-image-cache' disregards this variable. */); | |
9023 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 9024 | #ifdef HAVE_IMAGEMAGICK |
af008560 GM |
9025 | DEFVAR_INT ("imagemagick-render-type", imagemagick_render_type, |
9026 | doc: /* Integer indicating which ImageMagick rendering method to use. | |
9027 | The options are: | |
9028 | 0 -- the default method (pixel pushing) | |
9029 | 1 -- a newer method ("MagickExportImagePixels") that may perform | |
9030 | better (speed etc) in some cases, but has not been as thoroughly | |
9031 | tested with Emacs as the default method. This method requires | |
9032 | ImageMagick version 6.4.6 (approximately) or later. | |
9033 | */); | |
9034 | /* MagickExportImagePixels is in 6.4.6-9, but not 6.4.4-10. */ | |
9035 | imagemagick_render_type = 0; | |
7574650a | 9036 | #endif |
4ef0d4d0 | 9037 | |
4ef0d4d0 | 9038 | } |