Commit | Line | Data |
---|---|---|
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 |
4dfbd238 | 78 | #include "w32.h" |
4ef0d4d0 KS |
79 | /* W32_TODO : Color tables on W32. */ |
80 | #undef COLOR_TABLE_SUPPORT | |
81 | ||
82 | typedef struct w32_bitmap_record Bitmap_Record; | |
5e617bc2 | 83 | #define GET_PIXEL(ximg, x, y) GetPixel (ximg, x, y) |
4ef0d4d0 | 84 | #define NO_PIXMAP 0 |
4ef0d4d0 KS |
85 | |
86 | #define RGB_PIXEL_COLOR COLORREF | |
87 | ||
9ecf6403 YM |
88 | #define PIX_MASK_RETAIN 0 |
89 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 | 90 | |
4ef0d4d0 KS |
91 | #define x_defined_color w32_defined_color |
92 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 | 93 | |
5be1c984 EZ |
94 | /* Version of libpng that we were compiled with, or -1 if no PNG |
95 | support was compiled in. This is tested by w32-win.el to correctly | |
96 | set up the alist used to search for PNG libraries. */ | |
97 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
98 | #endif /* HAVE_NTGUI */ |
99 | ||
edfda783 | 100 | #ifdef HAVE_NS |
edfda783 AR |
101 | #undef COLOR_TABLE_SUPPORT |
102 | ||
103 | typedef struct ns_bitmap_record Bitmap_Record; | |
104 | ||
5e617bc2 | 105 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
edfda783 AR |
106 | #define NO_PIXMAP 0 |
107 | ||
108 | #define RGB_PIXEL_COLOR unsigned long | |
109 | #define ZPixmap 0 | |
110 | ||
111 | #define PIX_MASK_RETAIN 0 | |
112 | #define PIX_MASK_DRAW 1 | |
113 | ||
edfda783 AR |
114 | #define x_defined_color(f, name, color_def, alloc) \ |
115 | ns_defined_color (f, name, color_def, alloc, 0) | |
9e50ff0c | 116 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
117 | #endif /* HAVE_NS */ |
118 | ||
119 | ||
97ec208f DN |
120 | /* The symbol `postscript' identifying images of this type. */ |
121 | ||
955cbe7b | 122 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 123 | |
f57e2426 J |
124 | static void x_disable_image (struct frame *, struct image *); |
125 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
126 | Lisp_Object); | |
4ef0d4d0 | 127 | |
f57e2426 J |
128 | static void init_color_table (void); |
129 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 130 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
131 | static void free_color_table (void); |
132 | static unsigned long *colors_in_color_table (int *n); | |
4ef0d4d0 KS |
133 | #endif |
134 | ||
135 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
136 | id, which is just an int that this section returns. Bitmaps are | |
137 | reference counted so they can be shared among frames. | |
138 | ||
139 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
140 | be used to indicate no bitmap. | |
141 | ||
142 | If you use x_create_bitmap_from_data, then you must keep track of | |
143 | the bitmaps yourself. That is, creating a bitmap from the same | |
144 | data more than once will not be caught. */ | |
145 | ||
edfda783 AR |
146 | #ifdef HAVE_NS |
147 | XImagePtr | |
148 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
149 | unsigned int width, unsigned int height, | |
150 | unsigned long plane_mask, int format) | |
151 | { | |
6fb5f7da | 152 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 153 | ns_retain_object (pixmap); |
edfda783 AR |
154 | return pixmap; |
155 | } | |
156 | ||
157 | /* use with imgs created by ns_image_for_XPM */ | |
158 | unsigned long | |
159 | XGetPixel (XImagePtr ximage, int x, int y) | |
160 | { | |
ed3751c8 | 161 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
162 | } |
163 | ||
164 | /* use with imgs created by ns_image_for_XPM; alpha set to 1; | |
165 | pixel is assumed to be in form RGB */ | |
166 | void | |
167 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
168 | { | |
ed3751c8 | 169 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
170 | } |
171 | #endif /* HAVE_NS */ | |
172 | ||
4ef0d4d0 KS |
173 | |
174 | /* Functions to access the contents of a bitmap, given an id. */ | |
175 | ||
176 | int | |
0766b489 | 177 | x_bitmap_height (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
178 | { |
179 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
180 | } | |
181 | ||
182 | int | |
0766b489 | 183 | x_bitmap_width (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
184 | { |
185 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
186 | } | |
187 | ||
188 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
189 | int | |
0766b489 | 190 | x_bitmap_pixmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 | 191 | { |
f6cfbd8f EZ |
192 | /* HAVE_NTGUI needs the explicit cast here. */ |
193 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
4ef0d4d0 KS |
194 | } |
195 | #endif | |
196 | ||
197 | #ifdef HAVE_X_WINDOWS | |
198 | int | |
0766b489 | 199 | x_bitmap_mask (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
200 | { |
201 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
202 | } | |
203 | #endif | |
204 | ||
205 | /* Allocate a new bitmap record. Returns index of new record. */ | |
206 | ||
0766b489 | 207 | static ptrdiff_t |
d3da34e0 | 208 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
209 | { |
210 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 211 | ptrdiff_t i; |
4ef0d4d0 | 212 | |
4ef0d4d0 KS |
213 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) |
214 | return ++dpyinfo->bitmaps_last; | |
215 | ||
216 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
217 | if (dpyinfo->bitmaps[i].refcount == 0) | |
218 | return i + 1; | |
219 | ||
a69fbedb PE |
220 | dpyinfo->bitmaps = |
221 | xpalloc (dpyinfo->bitmaps, &dpyinfo->bitmaps_size, | |
222 | 10, -1, sizeof *dpyinfo->bitmaps); | |
4ef0d4d0 KS |
223 | return ++dpyinfo->bitmaps_last; |
224 | } | |
225 | ||
226 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
227 | ||
228 | void | |
13464394 | 229 | x_reference_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
230 | { |
231 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
232 | } | |
233 | ||
234 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
235 | ||
0766b489 | 236 | ptrdiff_t |
d3da34e0 | 237 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
238 | { |
239 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 240 | ptrdiff_t id; |
4ef0d4d0 KS |
241 | |
242 | #ifdef HAVE_X_WINDOWS | |
243 | Pixmap bitmap; | |
244 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
245 | bits, width, height); | |
246 | if (! bitmap) | |
247 | return -1; | |
248 | #endif /* HAVE_X_WINDOWS */ | |
249 | ||
250 | #ifdef HAVE_NTGUI | |
251 | Pixmap bitmap; | |
252 | bitmap = CreateBitmap (width, height, | |
253 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
254 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
255 | bits); | |
256 | if (! bitmap) | |
257 | return -1; | |
258 | #endif /* HAVE_NTGUI */ | |
259 | ||
edfda783 | 260 | #ifdef HAVE_NS |
ed3751c8 | 261 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
262 | if (!bitmap) |
263 | return -1; | |
264 | #endif | |
265 | ||
4ef0d4d0 | 266 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 267 | |
edfda783 AR |
268 | #ifdef HAVE_NS |
269 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
270 | dpyinfo->bitmaps[id - 1].depth = 1; | |
271 | #endif | |
272 | ||
4ef0d4d0 KS |
273 | dpyinfo->bitmaps[id - 1].file = NULL; |
274 | dpyinfo->bitmaps[id - 1].height = height; | |
275 | dpyinfo->bitmaps[id - 1].width = width; | |
276 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
277 | ||
278 | #ifdef HAVE_X_WINDOWS | |
279 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
280 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
281 | dpyinfo->bitmaps[id - 1].depth = 1; | |
282 | #endif /* HAVE_X_WINDOWS */ | |
283 | ||
284 | #ifdef HAVE_NTGUI | |
285 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
286 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
287 | dpyinfo->bitmaps[id - 1].depth = 1; | |
288 | #endif /* HAVE_NTGUI */ | |
289 | ||
290 | return id; | |
291 | } | |
292 | ||
293 | /* Create bitmap from file FILE for frame F. */ | |
294 | ||
0766b489 | 295 | ptrdiff_t |
d3da34e0 | 296 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 297 | { |
edfda783 AR |
298 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
299 | ||
4ef0d4d0 KS |
300 | #ifdef HAVE_NTGUI |
301 | return -1; /* W32_TODO : bitmap support */ | |
302 | #endif /* HAVE_NTGUI */ | |
303 | ||
edfda783 | 304 | #ifdef HAVE_NS |
0766b489 | 305 | ptrdiff_t id; |
ed3751c8 | 306 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
307 | |
308 | if (!bitmap) | |
309 | return -1; | |
310 | ||
311 | ||
312 | id = x_allocate_bitmap_record (f); | |
313 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
314 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 315 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
edfda783 | 316 | dpyinfo->bitmaps[id - 1].depth = 1; |
ed3751c8 JB |
317 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
318 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
6045c4fd | 319 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
edfda783 AR |
320 | return id; |
321 | #endif | |
322 | ||
4ef0d4d0 | 323 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
324 | unsigned int width, height; |
325 | Pixmap bitmap; | |
0766b489 PE |
326 | int xhot, yhot, result; |
327 | ptrdiff_t id; | |
4ef0d4d0 KS |
328 | Lisp_Object found; |
329 | int fd; | |
330 | char *filename; | |
331 | ||
332 | /* Look for an existing bitmap with the same name. */ | |
333 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
334 | { | |
335 | if (dpyinfo->bitmaps[id].refcount | |
336 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 337 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
338 | { |
339 | ++dpyinfo->bitmaps[id].refcount; | |
340 | return id + 1; | |
341 | } | |
342 | } | |
343 | ||
344 | /* Search bitmap-file-path for the file, if appropriate. */ | |
345 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
346 | if (fd < 0) | |
347 | return -1; | |
348 | emacs_close (fd); | |
349 | ||
51b59d79 | 350 | filename = SSDATA (found); |
4ef0d4d0 KS |
351 | |
352 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
353 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
354 | if (result != BitmapSuccess) | |
355 | return -1; | |
356 | ||
357 | id = x_allocate_bitmap_record (f); | |
358 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
359 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
360 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
23f86fce | 361 | dpyinfo->bitmaps[id - 1].file = xmalloc (SBYTES (file) + 1); |
4ef0d4d0 KS |
362 | dpyinfo->bitmaps[id - 1].depth = 1; |
363 | dpyinfo->bitmaps[id - 1].height = height; | |
364 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 365 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
366 | |
367 | return id; | |
368 | #endif /* HAVE_X_WINDOWS */ | |
369 | } | |
370 | ||
371 | /* Free bitmap B. */ | |
372 | ||
373 | static void | |
d3da34e0 | 374 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
375 | { |
376 | #ifdef HAVE_X_WINDOWS | |
377 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
378 | if (bm->have_mask) | |
379 | XFreePixmap (dpyinfo->display, bm->mask); | |
380 | #endif /* HAVE_X_WINDOWS */ | |
381 | ||
382 | #ifdef HAVE_NTGUI | |
383 | DeleteObject (bm->pixmap); | |
384 | #endif /* HAVE_NTGUI */ | |
385 | ||
edfda783 | 386 | #ifdef HAVE_NS |
ed3751c8 | 387 | ns_release_object (bm->img); |
edfda783 AR |
388 | #endif |
389 | ||
4ef0d4d0 KS |
390 | if (bm->file) |
391 | { | |
392 | xfree (bm->file); | |
393 | bm->file = NULL; | |
394 | } | |
395 | } | |
396 | ||
397 | /* Remove reference to bitmap with id number ID. */ | |
398 | ||
399 | void | |
0766b489 | 400 | x_destroy_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
401 | { |
402 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
403 | ||
404 | if (id > 0) | |
405 | { | |
406 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
407 | ||
408 | if (--bm->refcount == 0) | |
409 | { | |
410 | BLOCK_INPUT; | |
65342ae3 | 411 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
412 | UNBLOCK_INPUT; |
413 | } | |
414 | } | |
415 | } | |
416 | ||
417 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
418 | ||
419 | void | |
d3da34e0 | 420 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 | 421 | { |
0766b489 | 422 | ptrdiff_t i; |
4ef0d4d0 KS |
423 | Bitmap_Record *bm = dpyinfo->bitmaps; |
424 | ||
425 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
426 | if (bm->refcount > 0) | |
65342ae3 | 427 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
428 | |
429 | dpyinfo->bitmaps_last = 0; | |
430 | } | |
431 | ||
432 | ||
433 | #ifdef HAVE_X_WINDOWS | |
434 | ||
435 | /* Useful functions defined in the section | |
436 | `Image type independent image structures' below. */ | |
437 | ||
f57e2426 J |
438 | static unsigned long four_corners_best (XImagePtr ximg, |
439 | int *corners, | |
440 | unsigned long width, | |
441 | unsigned long height); | |
4ef0d4d0 | 442 | |
f57e2426 J |
443 | static int x_create_x_image_and_pixmap (struct frame *f, int width, int height, |
444 | int depth, XImagePtr *ximg, | |
445 | Pixmap *pixmap); | |
4ef0d4d0 | 446 | |
f57e2426 | 447 | static void x_destroy_x_image (XImagePtr ximg); |
4ef0d4d0 KS |
448 | |
449 | ||
450 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
451 | It's nicer with some borders in this context */ | |
452 | ||
453 | int | |
0766b489 | 454 | x_create_bitmap_mask (struct frame *f, ptrdiff_t id) |
4ef0d4d0 KS |
455 | { |
456 | Pixmap pixmap, mask; | |
457 | XImagePtr ximg, mask_img; | |
458 | unsigned long width, height; | |
459 | int result; | |
460 | unsigned long bg; | |
461 | unsigned long x, y, xp, xm, yp, ym; | |
462 | GC gc; | |
463 | ||
464 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
465 | ||
466 | if (!(id > 0)) | |
467 | return -1; | |
468 | ||
469 | pixmap = x_bitmap_pixmap (f, id); | |
470 | width = x_bitmap_width (f, id); | |
471 | height = x_bitmap_height (f, id); | |
472 | ||
473 | BLOCK_INPUT; | |
474 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
475 | ~0, ZPixmap); | |
476 | ||
477 | if (!ximg) | |
478 | { | |
479 | UNBLOCK_INPUT; | |
480 | return -1; | |
481 | } | |
482 | ||
483 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
484 | ||
485 | UNBLOCK_INPUT; | |
486 | if (!result) | |
487 | { | |
488 | XDestroyImage (ximg); | |
489 | return -1; | |
490 | } | |
491 | ||
6ac3c7bb | 492 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
493 | |
494 | for (y = 0; y < ximg->height; ++y) | |
495 | { | |
496 | for (x = 0; x < ximg->width; ++x) | |
497 | { | |
498 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
499 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
500 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
501 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
502 | if (XGetPixel (ximg, x, y) == bg | |
503 | && XGetPixel (ximg, x, yp) == bg | |
504 | && XGetPixel (ximg, x, ym) == bg | |
505 | && XGetPixel (ximg, xp, y) == bg | |
506 | && XGetPixel (ximg, xp, yp) == bg | |
507 | && XGetPixel (ximg, xp, ym) == bg | |
508 | && XGetPixel (ximg, xm, y) == bg | |
509 | && XGetPixel (ximg, xm, yp) == bg | |
510 | && XGetPixel (ximg, xm, ym) == bg) | |
511 | XPutPixel (mask_img, x, y, 0); | |
512 | else | |
513 | XPutPixel (mask_img, x, y, 1); | |
514 | } | |
515 | } | |
516 | ||
a54e2c05 | 517 | eassert (interrupt_input_blocked); |
4ef0d4d0 KS |
518 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); |
519 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
520 | width, height); | |
521 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
522 | ||
523 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
524 | dpyinfo->bitmaps[id - 1].mask = mask; | |
525 | ||
526 | XDestroyImage (ximg); | |
527 | x_destroy_x_image (mask_img); | |
528 | ||
529 | return 0; | |
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 | |
4ef0d4d0 KS |
562 | /* Function prototypes. */ |
563 | ||
f57e2426 J |
564 | static Lisp_Object define_image_type (struct image_type *type, int loaded); |
565 | static struct image_type *lookup_image_type (Lisp_Object symbol); | |
675e2c69 | 566 | static void image_error (const char *format, Lisp_Object, Lisp_Object); |
f57e2426 J |
567 | static void x_laplace (struct frame *, struct image *); |
568 | static void x_emboss (struct frame *, struct image *); | |
569 | static int x_build_heuristic_mask (struct frame *, struct image *, | |
570 | Lisp_Object); | |
84d358f0 | 571 | #ifdef HAVE_NTGUI |
0855eb52 | 572 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 573 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
574 | #else |
575 | #define CACHE_IMAGE_TYPE(type, status) | |
576 | #endif | |
0855eb52 JB |
577 | |
578 | #define ADD_IMAGE_TYPE(type) \ | |
579 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
580 | |
581 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 582 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 583 | |
0855eb52 | 584 | static Lisp_Object |
d3da34e0 | 585 | define_image_type (struct image_type *type, int loaded) |
4ef0d4d0 | 586 | { |
0855eb52 JB |
587 | Lisp_Object success; |
588 | ||
589 | if (!loaded) | |
590 | success = Qnil; | |
591 | else | |
592 | { | |
593 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
594 | The initialized data segment is read-only. */ | |
23f86fce | 595 | struct image_type *p = xmalloc (sizeof *p); |
ae1d87e2 | 596 | *p = *type; |
0855eb52 JB |
597 | p->next = image_types; |
598 | image_types = p; | |
599 | success = Qt; | |
600 | } | |
601 | ||
adac86db | 602 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 603 | return success; |
4ef0d4d0 KS |
604 | } |
605 | ||
606 | ||
607 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
608 | structure. Value is null if SYMBOL is not a known image type. */ | |
609 | ||
55d4c1b2 | 610 | static inline struct image_type * |
d3da34e0 | 611 | lookup_image_type (Lisp_Object symbol) |
4ef0d4d0 KS |
612 | { |
613 | struct image_type *type; | |
614 | ||
803aac3e | 615 | /* We must initialize the image-type if it hasn't been already. */ |
2e288d54 | 616 | if (NILP (Finit_image_library (symbol, Vdynamic_library_alist))) |
803aac3e MB |
617 | return 0; /* unimplemented */ |
618 | ||
4ef0d4d0 KS |
619 | for (type = image_types; type; type = type->next) |
620 | if (EQ (symbol, *type->type)) | |
621 | break; | |
622 | ||
623 | return type; | |
624 | } | |
625 | ||
626 | ||
627 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
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 | ||
634 | int | |
d3da34e0 | 635 | valid_image_p (Lisp_Object object) |
4ef0d4d0 KS |
636 | { |
637 | int valid_p = 0; | |
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 | ||
707 | /* Non-zero means key must be present. */ | |
708 | int mandatory_p; | |
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 | ||
f57e2426 J |
718 | static int parse_image_spec (Lisp_Object, struct image_keyword *, |
719 | int, Lisp_Object); | |
720 | static Lisp_Object image_spec_value (Lisp_Object, Lisp_Object, int *); | |
4ef0d4d0 KS |
721 | |
722 | ||
723 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
724 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
725 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
726 | image_keywords structures of size NKEYWORDS describing other | |
727 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
728 | ||
729 | static int | |
d3da34e0 JB |
730 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
731 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
732 | { |
733 | int i; | |
734 | Lisp_Object plist; | |
735 | ||
736 | if (!IMAGEP (spec)) | |
737 | return 0; | |
738 | ||
739 | plist = XCDR (spec); | |
740 | while (CONSP (plist)) | |
741 | { | |
742 | Lisp_Object key, value; | |
743 | ||
744 | /* First element of a pair must be a symbol. */ | |
745 | key = XCAR (plist); | |
746 | plist = XCDR (plist); | |
747 | if (!SYMBOLP (key)) | |
748 | return 0; | |
749 | ||
750 | /* There must follow a value. */ | |
751 | if (!CONSP (plist)) | |
752 | return 0; | |
753 | value = XCAR (plist); | |
754 | plist = XCDR (plist); | |
755 | ||
756 | /* Find key in KEYWORDS. Error if not found. */ | |
757 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 758 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
759 | break; |
760 | ||
761 | if (i == nkeywords) | |
762 | continue; | |
763 | ||
764 | /* Record that we recognized the keyword. If a keywords | |
765 | was found more than once, it's an error. */ | |
766 | keywords[i].value = value; | |
4ef0d4d0 KS |
767 | if (keywords[i].count > 1) |
768 | return 0; | |
d311d28c | 769 | ++keywords[i].count; |
4ef0d4d0 KS |
770 | |
771 | /* Check type of value against allowed type. */ | |
772 | switch (keywords[i].type) | |
773 | { | |
774 | case IMAGE_STRING_VALUE: | |
775 | if (!STRINGP (value)) | |
776 | return 0; | |
777 | break; | |
778 | ||
779 | case IMAGE_STRING_OR_NIL_VALUE: | |
780 | if (!STRINGP (value) && !NILP (value)) | |
781 | return 0; | |
782 | break; | |
783 | ||
784 | case IMAGE_SYMBOL_VALUE: | |
785 | if (!SYMBOLP (value)) | |
786 | return 0; | |
787 | break; | |
788 | ||
789 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
13464394 | 790 | if (! RANGED_INTEGERP (1, value, INT_MAX)) |
4ef0d4d0 KS |
791 | return 0; |
792 | break; | |
793 | ||
c4a07a4c PE |
794 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR: |
795 | if (RANGED_INTEGERP (0, value, INT_MAX)) | |
4ef0d4d0 KS |
796 | break; |
797 | if (CONSP (value) | |
c4a07a4c PE |
798 | && RANGED_INTEGERP (0, XCAR (value), INT_MAX) |
799 | && RANGED_INTEGERP (0, XCDR (value), INT_MAX)) | |
4ef0d4d0 KS |
800 | break; |
801 | return 0; | |
802 | ||
803 | case IMAGE_ASCENT_VALUE: | |
804 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
805 | break; | |
13464394 | 806 | else if (RANGED_INTEGERP (0, value, 100)) |
4ef0d4d0 KS |
807 | break; |
808 | return 0; | |
809 | ||
810 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
13464394 PE |
811 | /* Unlike the other integer-related cases, this one does not |
812 | verify that VALUE fits in 'int'. This is because callers | |
813 | want EMACS_INT. */ | |
4ef0d4d0 KS |
814 | if (!INTEGERP (value) || XINT (value) < 0) |
815 | return 0; | |
816 | break; | |
817 | ||
818 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
819 | break; | |
820 | ||
821 | case IMAGE_FUNCTION_VALUE: | |
822 | value = indirect_function (value); | |
ca105506 | 823 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
824 | break; |
825 | return 0; | |
826 | ||
827 | case IMAGE_NUMBER_VALUE: | |
828 | if (!INTEGERP (value) && !FLOATP (value)) | |
829 | return 0; | |
830 | break; | |
831 | ||
832 | case IMAGE_INTEGER_VALUE: | |
13464394 | 833 | if (! TYPE_RANGED_INTEGERP (int, value)) |
4ef0d4d0 KS |
834 | return 0; |
835 | break; | |
836 | ||
837 | case IMAGE_BOOL_VALUE: | |
838 | if (!NILP (value) && !EQ (value, Qt)) | |
839 | return 0; | |
840 | break; | |
841 | ||
842 | default: | |
1088b922 | 843 | emacs_abort (); |
4ef0d4d0 KS |
844 | break; |
845 | } | |
846 | ||
847 | if (EQ (key, QCtype) && !EQ (type, value)) | |
848 | return 0; | |
849 | } | |
850 | ||
851 | /* Check that all mandatory fields are present. */ | |
852 | for (i = 0; i < nkeywords; ++i) | |
853 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
854 | return 0; | |
855 | ||
856 | return NILP (plist); | |
857 | } | |
858 | ||
859 | ||
860 | /* Return the value of KEY in image specification SPEC. Value is nil | |
861 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
862 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
863 | ||
864 | static Lisp_Object | |
d3da34e0 | 865 | image_spec_value (Lisp_Object spec, Lisp_Object key, int *found) |
4ef0d4d0 KS |
866 | { |
867 | Lisp_Object tail; | |
868 | ||
a54e2c05 | 869 | eassert (valid_image_p (spec)); |
4ef0d4d0 KS |
870 | |
871 | for (tail = XCDR (spec); | |
872 | CONSP (tail) && CONSP (XCDR (tail)); | |
873 | tail = XCDR (XCDR (tail))) | |
874 | { | |
875 | if (EQ (XCAR (tail), key)) | |
876 | { | |
877 | if (found) | |
878 | *found = 1; | |
879 | return XCAR (XCDR (tail)); | |
880 | } | |
881 | } | |
882 | ||
883 | if (found) | |
884 | *found = 0; | |
885 | return Qnil; | |
886 | } | |
887 | ||
888 | ||
889 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
890 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
891 | PIXELS non-nil means return the size in pixels, otherwise return the | |
892 | size in canonical character units. | |
893 | FRAME is the frame on which the image will be displayed. FRAME nil | |
894 | or omitted means use the selected frame. */) | |
5842a27b | 895 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
896 | { |
897 | Lisp_Object size; | |
898 | ||
899 | size = Qnil; | |
900 | if (valid_image_p (spec)) | |
901 | { | |
902 | struct frame *f = check_x_frame (frame); | |
13464394 | 903 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
904 | struct image *img = IMAGE_FROM_ID (f, id); |
905 | int width = img->width + 2 * img->hmargin; | |
906 | int height = img->height + 2 * img->vmargin; | |
907 | ||
908 | if (NILP (pixels)) | |
909 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
910 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
911 | else | |
912 | size = Fcons (make_number (width), make_number (height)); | |
913 | } | |
914 | else | |
915 | error ("Invalid image specification"); | |
916 | ||
917 | return size; | |
918 | } | |
919 | ||
920 | ||
921 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
922 | doc: /* Return t if image SPEC has a mask bitmap. | |
923 | FRAME is the frame on which the image will be displayed. FRAME nil | |
924 | or omitted means use the selected frame. */) | |
5842a27b | 925 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
926 | { |
927 | Lisp_Object mask; | |
928 | ||
929 | mask = Qnil; | |
930 | if (valid_image_p (spec)) | |
931 | { | |
932 | struct frame *f = check_x_frame (frame); | |
13464394 | 933 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
934 | struct image *img = IMAGE_FROM_ID (f, id); |
935 | if (img->mask) | |
936 | mask = Qt; | |
937 | } | |
938 | else | |
939 | error ("Invalid image specification"); | |
940 | ||
941 | return mask; | |
942 | } | |
943 | ||
1546c559 JL |
944 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
945 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
946 | FRAME is the frame on which the image will be displayed. FRAME nil |
947 | or omitted means use the selected frame. */) | |
5842a27b | 948 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
949 | { |
950 | Lisp_Object ext; | |
951 | ||
952 | ext = Qnil; | |
953 | if (valid_image_p (spec)) | |
954 | { | |
955 | struct frame *f = check_x_frame (frame); | |
13464394 | 956 | ptrdiff_t id = lookup_image (f, spec); |
6ac3c7bb | 957 | struct image *img = IMAGE_FROM_ID (f, id); |
b50691aa | 958 | ext = img->lisp_data; |
6ac3c7bb KS |
959 | } |
960 | ||
961 | return ext; | |
962 | } | |
963 | ||
4ef0d4d0 KS |
964 | \f |
965 | /*********************************************************************** | |
966 | Image type independent image structures | |
967 | ***********************************************************************/ | |
968 | ||
f57e2426 | 969 | static void free_image (struct frame *f, struct image *img); |
4ef0d4d0 | 970 | |
11273115 | 971 | #define MAX_IMAGE_SIZE 10.0 |
4ef0d4d0 KS |
972 | /* Allocate and return a new image structure for image specification |
973 | SPEC. SPEC has a hash value of HASH. */ | |
974 | ||
975 | static struct image * | |
0de4bb68 | 976 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 | 977 | { |
23f86fce | 978 | struct image *img = xzalloc (sizeof *img); |
a2bc5bdd | 979 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 | 980 | |
a54e2c05 | 981 | eassert (valid_image_p (spec)); |
a2bc5bdd | 982 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 | 983 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
a54e2c05 | 984 | eassert (img->type != NULL); |
4ef0d4d0 | 985 | img->spec = spec; |
b50691aa | 986 | img->lisp_data = Qnil; |
4ef0d4d0 KS |
987 | img->ascent = DEFAULT_IMAGE_ASCENT; |
988 | img->hash = hash; | |
6ac3c7bb | 989 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
990 | return img; |
991 | } | |
992 | ||
993 | ||
994 | /* Free image IMG which was used on frame F, including its resources. */ | |
995 | ||
996 | static void | |
d3da34e0 | 997 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
998 | { |
999 | if (img) | |
1000 | { | |
354884c4 | 1001 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1002 | |
1003 | /* Remove IMG from the hash table of its cache. */ | |
1004 | if (img->prev) | |
1005 | img->prev->next = img->next; | |
1006 | else | |
1007 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1008 | ||
1009 | if (img->next) | |
1010 | img->next->prev = img->prev; | |
1011 | ||
1012 | c->images[img->id] = NULL; | |
1013 | ||
1014 | /* Free resources, then free IMG. */ | |
1015 | img->type->free (f, img); | |
1016 | xfree (img); | |
1017 | } | |
1018 | } | |
1019 | ||
f1f25b99 CY |
1020 | /* Return 1 if the given widths and heights are valid for display; |
1021 | otherwise, return 0. */ | |
1022 | ||
3f791afe | 1023 | static int |
d3da34e0 | 1024 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1025 | { |
7df4765a | 1026 | int w, h; |
f1f25b99 | 1027 | |
7df4765a | 1028 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1029 | return 0; |
1030 | ||
7df4765a | 1031 | if (INTEGERP (Vmax_image_size)) |
3f791afe PE |
1032 | return (width <= XINT (Vmax_image_size) |
1033 | && height <= XINT (Vmax_image_size)); | |
7df4765a KS |
1034 | else if (FLOATP (Vmax_image_size)) |
1035 | { | |
e5d76069 PE |
1036 | if (f != NULL) |
1037 | { | |
1038 | w = FRAME_PIXEL_WIDTH (f); | |
1039 | h = FRAME_PIXEL_HEIGHT (f); | |
1040 | } | |
1041 | else | |
1042 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
3f791afe PE |
1043 | return (width <= XFLOAT_DATA (Vmax_image_size) * w |
1044 | && height <= XFLOAT_DATA (Vmax_image_size) * h); | |
7df4765a KS |
1045 | } |
1046 | else | |
1047 | return 1; | |
f1f25b99 | 1048 | } |
4ef0d4d0 KS |
1049 | |
1050 | /* Prepare image IMG for display on frame F. Must be called before | |
1051 | drawing an image. */ | |
1052 | ||
1053 | void | |
d3da34e0 | 1054 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 | 1055 | { |
4ef0d4d0 | 1056 | /* We're about to display IMG, so set its timestamp to `now'. */ |
e9a9ae03 | 1057 | img->timestamp = current_emacs_time (); |
4ef0d4d0 KS |
1058 | |
1059 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1060 | type dependent loader function. */ | |
1061 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1062 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 | 1063 | |
4ef0d4d0 KS |
1064 | } |
1065 | ||
1066 | ||
1067 | /* Value is the number of pixels for the ascent of image IMG when | |
1068 | drawn in face FACE. */ | |
1069 | ||
1070 | int | |
d3da34e0 | 1071 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1072 | { |
1938bc36 | 1073 | int height; |
4ef0d4d0 KS |
1074 | int ascent; |
1075 | ||
1938bc36 KS |
1076 | if (slice->height == img->height) |
1077 | height = img->height + img->vmargin; | |
1078 | else if (slice->y == 0) | |
1079 | height = slice->height + img->vmargin; | |
1080 | else | |
1081 | height = slice->height; | |
1082 | ||
4ef0d4d0 KS |
1083 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1084 | { | |
1085 | if (face->font) | |
1086 | { | |
1087 | #ifdef HAVE_NTGUI | |
1088 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1089 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1090 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1091 | #else |
1092 | /* This expression is arranged so that if the image can't be | |
1093 | exactly centered, it will be moved slightly up. This is | |
1094 | because a typical font is `top-heavy' (due to the presence | |
1095 | uppercase letters), so the image placement should err towards | |
1096 | being top-heavy too. It also just generally looks better. */ | |
5e617bc2 JB |
1097 | ascent = (height + FONT_BASE (face->font) |
1098 | - FONT_DESCENT (face->font) + 1) / 2; | |
4ef0d4d0 KS |
1099 | #endif /* HAVE_NTGUI */ |
1100 | } | |
1101 | else | |
1102 | ascent = height / 2; | |
1103 | } | |
1104 | else | |
13464394 | 1105 | ascent = height * (img->ascent / 100.0); |
4ef0d4d0 KS |
1106 | |
1107 | return ascent; | |
1108 | } | |
1109 | ||
1110 | \f | |
1111 | /* Image background colors. */ | |
1112 | ||
1113 | /* Find the "best" corner color of a bitmap. | |
1114 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1115 | ||
1116 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1117 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1118 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1119 | { |
f0c77cd1 | 1120 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1121 | int i, best_count; |
1122 | ||
6ac3c7bb KS |
1123 | if (corners && corners[BOT_CORNER] >= 0) |
1124 | { | |
1125 | /* Get the colors at the corner_pixels of ximg. */ | |
1126 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1127 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1128 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1129 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | /* Get the colors at the corner_pixels of ximg. */ | |
1134 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1135 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1136 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1137 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1138 | } | |
4ef0d4d0 KS |
1139 | /* Choose the most frequently found color as background. */ |
1140 | for (i = best_count = 0; i < 4; ++i) | |
1141 | { | |
1142 | int j, n; | |
1143 | ||
1144 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1145 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1146 | ++n; |
1147 | ||
1148 | if (n > best_count) | |
6ac3c7bb | 1149 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1150 | } |
1151 | ||
1152 | return best; | |
1153 | } | |
1154 | ||
1155 | /* Portability macros */ | |
1156 | ||
1157 | #ifdef HAVE_NTGUI | |
1158 | ||
1159 | #define Destroy_Image(img_dc, prev) \ | |
1160 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1161 | ||
1162 | #define Free_Pixmap(display, pixmap) \ | |
1163 | DeleteObject (pixmap) | |
1164 | ||
edfda783 AR |
1165 | #elif defined (HAVE_NS) |
1166 | ||
1167 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1168 | ns_release_object (ximg) |
edfda783 AR |
1169 | |
1170 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1171 | ns_release_object (pixmap) |
edfda783 | 1172 | |
4ef0d4d0 KS |
1173 | #else |
1174 | ||
1175 | #define Destroy_Image(ximg, dummy) \ | |
1176 | XDestroyImage (ximg) | |
1177 | ||
1178 | #define Free_Pixmap(display, pixmap) \ | |
1179 | XFreePixmap (display, pixmap) | |
1180 | ||
edfda783 | 1181 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1182 | |
1183 | ||
1184 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1185 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1186 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1187 | use for the heuristic. */ |
4ef0d4d0 KS |
1188 | |
1189 | RGB_PIXEL_COLOR | |
d3da34e0 | 1190 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1191 | { |
1192 | if (! img->background_valid) | |
1193 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1194 | { | |
1195 | int free_ximg = !ximg; | |
1196 | #ifdef HAVE_NTGUI | |
1197 | HGDIOBJ prev; | |
1198 | #endif /* HAVE_NTGUI */ | |
1199 | ||
1200 | if (free_ximg) | |
1201 | { | |
1202 | #ifndef HAVE_NTGUI | |
1203 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1204 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1205 | #else | |
1206 | HDC frame_dc = get_frame_dc (f); | |
1207 | ximg = CreateCompatibleDC (frame_dc); | |
1208 | release_frame_dc (f, frame_dc); | |
1209 | prev = SelectObject (ximg, img->pixmap); | |
1210 | #endif /* !HAVE_NTGUI */ | |
1211 | } | |
1212 | ||
6ac3c7bb | 1213 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1214 | |
1215 | if (free_ximg) | |
1216 | Destroy_Image (ximg, prev); | |
1f026899 | 1217 | |
4ef0d4d0 KS |
1218 | img->background_valid = 1; |
1219 | } | |
1220 | ||
1221 | return img->background; | |
1222 | } | |
1223 | ||
1224 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1225 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1226 | existing XImage object to use for the heuristic. */ | |
1227 | ||
1228 | int | |
d3da34e0 | 1229 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1230 | { |
1231 | if (! img->background_transparent_valid) | |
1232 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1233 | { | |
1234 | if (img->mask) | |
1235 | { | |
1236 | int free_mask = !mask; | |
1237 | #ifdef HAVE_NTGUI | |
1238 | HGDIOBJ prev; | |
1239 | #endif /* HAVE_NTGUI */ | |
1240 | ||
1241 | if (free_mask) | |
1242 | { | |
1243 | #ifndef HAVE_NTGUI | |
1244 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1245 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1246 | #else | |
1247 | HDC frame_dc = get_frame_dc (f); | |
1248 | mask = CreateCompatibleDC (frame_dc); | |
1249 | release_frame_dc (f, frame_dc); | |
1250 | prev = SelectObject (mask, img->mask); | |
1251 | #endif /* HAVE_NTGUI */ | |
1252 | } | |
1253 | ||
1254 | img->background_transparent | |
6ac3c7bb | 1255 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1256 | |
1257 | if (free_mask) | |
1258 | Destroy_Image (mask, prev); | |
1259 | } | |
1260 | else | |
1261 | img->background_transparent = 0; | |
1262 | ||
1263 | img->background_transparent_valid = 1; | |
1264 | } | |
1265 | ||
1266 | return img->background_transparent; | |
1267 | } | |
1268 | ||
1269 | \f | |
1270 | /*********************************************************************** | |
1271 | Helper functions for X image types | |
1272 | ***********************************************************************/ | |
1273 | ||
f57e2426 J |
1274 | static void x_clear_image_1 (struct frame *, struct image *, int, |
1275 | int, int); | |
1276 | static void x_clear_image (struct frame *f, struct image *img); | |
1277 | static unsigned long x_alloc_image_color (struct frame *f, | |
1278 | struct image *img, | |
1279 | Lisp_Object color_name, | |
1280 | unsigned long dflt); | |
4ef0d4d0 KS |
1281 | |
1282 | ||
1283 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1284 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1285 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1286 | the image, if any. */ | |
1287 | ||
1288 | static void | |
d3da34e0 JB |
1289 | x_clear_image_1 (struct frame *f, struct image *img, int pixmap_p, int mask_p, |
1290 | int colors_p) | |
4ef0d4d0 KS |
1291 | { |
1292 | if (pixmap_p && img->pixmap) | |
1293 | { | |
1294 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1295 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1296 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1297 | img->background_valid = 0; |
1298 | } | |
1299 | ||
1300 | if (mask_p && img->mask) | |
1301 | { | |
1302 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1303 | img->mask = NO_PIXMAP; | |
1304 | img->background_transparent_valid = 0; | |
1305 | } | |
1306 | ||
1307 | if (colors_p && img->ncolors) | |
1308 | { | |
4ef0d4d0 KS |
1309 | /* W32_TODO: color table support. */ |
1310 | #ifdef HAVE_X_WINDOWS | |
1311 | x_free_colors (f, img->colors, img->ncolors); | |
1312 | #endif /* HAVE_X_WINDOWS */ | |
1313 | xfree (img->colors); | |
1314 | img->colors = NULL; | |
1315 | img->ncolors = 0; | |
1316 | } | |
c7fea325 | 1317 | |
4ef0d4d0 KS |
1318 | } |
1319 | ||
1320 | /* Free X resources of image IMG which is used on frame F. */ | |
1321 | ||
1322 | static void | |
d3da34e0 | 1323 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1324 | { |
1325 | BLOCK_INPUT; | |
1326 | x_clear_image_1 (f, img, 1, 1, 1); | |
1327 | UNBLOCK_INPUT; | |
1328 | } | |
1329 | ||
1330 | ||
1331 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1332 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1333 | IMG->colors, so that it can be freed again. Value is the pixel | |
1334 | color. */ | |
1335 | ||
1336 | static unsigned long | |
d3da34e0 JB |
1337 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1338 | unsigned long dflt) | |
4ef0d4d0 KS |
1339 | { |
1340 | XColor color; | |
1341 | unsigned long result; | |
1342 | ||
a54e2c05 | 1343 | eassert (STRINGP (color_name)); |
4ef0d4d0 | 1344 | |
3f791afe PE |
1345 | if (x_defined_color (f, SSDATA (color_name), &color, 1) |
1346 | && img->ncolors < min (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *img->colors, | |
1347 | INT_MAX)) | |
4ef0d4d0 KS |
1348 | { |
1349 | /* This isn't called frequently so we get away with simply | |
1350 | reallocating the color vector to the needed size, here. */ | |
ddff3151 | 1351 | ptrdiff_t ncolors = img->ncolors + 1; |
38182d90 | 1352 | img->colors = xrealloc (img->colors, ncolors * sizeof *img->colors); |
ddff3151 PE |
1353 | img->colors[ncolors - 1] = color.pixel; |
1354 | img->ncolors = ncolors; | |
4ef0d4d0 KS |
1355 | result = color.pixel; |
1356 | } | |
1357 | else | |
1358 | result = dflt; | |
1359 | ||
1360 | return result; | |
1361 | } | |
1362 | ||
1363 | ||
1364 | \f | |
1365 | /*********************************************************************** | |
1366 | Image Cache | |
1367 | ***********************************************************************/ | |
1368 | ||
f57e2426 J |
1369 | static void cache_image (struct frame *f, struct image *img); |
1370 | static void postprocess_image (struct frame *, struct image *); | |
4ef0d4d0 KS |
1371 | |
1372 | /* Return a new, initialized image cache that is allocated from the | |
1373 | heap. Call free_image_cache to free an image cache. */ | |
1374 | ||
1375 | struct image_cache * | |
d3da34e0 | 1376 | make_image_cache (void) |
4ef0d4d0 | 1377 | { |
23f86fce | 1378 | struct image_cache *c = xzalloc (sizeof *c); |
4ef0d4d0 KS |
1379 | int size; |
1380 | ||
ddff3151 | 1381 | size = 50; |
23f86fce | 1382 | c->images = xmalloc (size * sizeof *c->images); |
ddff3151 | 1383 | c->size = size; |
4ef0d4d0 | 1384 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
23f86fce | 1385 | c->buckets = xzalloc (size); |
4ef0d4d0 KS |
1386 | return c; |
1387 | } | |
1388 | ||
1389 | ||
d3c35d17 CY |
1390 | /* Find an image matching SPEC in the cache, and return it. If no |
1391 | image is found, return NULL. */ | |
1392 | static struct image * | |
0de4bb68 | 1393 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1394 | { |
91be6b66 | 1395 | struct image *img; |
354884c4 | 1396 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1397 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1398 | ||
8198352b CY |
1399 | if (!c) return NULL; |
1400 | ||
d3c35d17 CY |
1401 | /* If the image spec does not specify a background color, the cached |
1402 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1403 | The foreground color must also match, for the sake of monochrome |
1404 | images. | |
1405 | ||
1406 | In fact, we could ignore the foreground color matching condition | |
1407 | for color images, or if the image spec specifies :foreground; | |
1408 | similarly we could ignore the background color matching condition | |
1409 | for formats that don't use transparency (such as jpeg), or if the | |
1410 | image spec specifies :background. However, the extra memory | |
1411 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1412 | |
483e7ae0 | 1413 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1414 | if (img->hash == hash |
1415 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1416 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1417 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1418 | break; |
1419 | return img; | |
1420 | } | |
1421 | ||
1422 | ||
1423 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1424 | ||
1425 | static void | |
d3da34e0 | 1426 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1427 | { |
1428 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1429 | if (img) | |
be3faa80 CY |
1430 | { |
1431 | free_image (f, img); | |
1432 | /* As display glyphs may still be referring to the image ID, we | |
1433 | must garbage the frame (Bug#6426). */ | |
1434 | SET_FRAME_GARBAGED (f); | |
1435 | } | |
483e7ae0 CY |
1436 | } |
1437 | ||
1438 | ||
4ef0d4d0 KS |
1439 | /* Free image cache of frame F. Be aware that X frames share images |
1440 | caches. */ | |
1441 | ||
1442 | void | |
d3da34e0 | 1443 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1444 | { |
354884c4 | 1445 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1446 | if (c) |
1447 | { | |
13464394 | 1448 | ptrdiff_t i; |
4ef0d4d0 KS |
1449 | |
1450 | /* Cache should not be referenced by any frame when freed. */ | |
a54e2c05 | 1451 | eassert (c->refcount == 0); |
4ef0d4d0 KS |
1452 | |
1453 | for (i = 0; i < c->used; ++i) | |
1454 | free_image (f, c->images[i]); | |
1455 | xfree (c->images); | |
1456 | xfree (c->buckets); | |
1457 | xfree (c); | |
354884c4 | 1458 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1459 | } |
1460 | } | |
1461 | ||
1462 | ||
a2bc5bdd SM |
1463 | /* Clear image cache of frame F. FILTER=t means free all images. |
1464 | FILTER=nil means clear only images that haven't been | |
1465 | displayed for some time. | |
1466 | Else, only free the images which have FILTER in their `dependencies'. | |
1467 | Should be called from time to time to reduce the number of loaded images. | |
1468 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1469 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1470 | |
ce0ad53d | 1471 | static void |
a2bc5bdd | 1472 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1473 | { |
354884c4 | 1474 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1475 | |
98fe5161 | 1476 | if (c) |
4ef0d4d0 | 1477 | { |
13464394 | 1478 | ptrdiff_t i, nfreed = 0; |
4ef0d4d0 KS |
1479 | |
1480 | /* Block input so that we won't be interrupted by a SIGIO | |
1481 | while being in an inconsistent state. */ | |
1482 | BLOCK_INPUT; | |
1483 | ||
98fe5161 CY |
1484 | if (!NILP (filter)) |
1485 | { | |
1486 | /* Filter image cache. */ | |
1487 | for (i = 0; i < c->used; ++i) | |
1488 | { | |
1489 | struct image *img = c->images[i]; | |
1490 | if (img && (EQ (Qt, filter) | |
1491 | || !NILP (Fmember (filter, img->dependencies)))) | |
1492 | { | |
1493 | free_image (f, img); | |
1494 | ++nfreed; | |
1495 | } | |
1496 | } | |
1497 | } | |
1498 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1499 | { |
98fe5161 | 1500 | /* Free cache based on timestamp. */ |
d35af63c PE |
1501 | EMACS_TIME old, t; |
1502 | double delay; | |
13464394 | 1503 | ptrdiff_t nimages = 0; |
98fe5161 CY |
1504 | |
1505 | for (i = 0; i < c->used; ++i) | |
1506 | if (c->images[i]) | |
1507 | nimages++; | |
1508 | ||
1509 | /* If the number of cached images has grown unusually large, | |
1510 | decrease the cache eviction delay (Bug#6230). */ | |
13464394 | 1511 | delay = XINT (Vimage_cache_eviction_delay); |
98fe5161 | 1512 | if (nimages > 40) |
13464394 PE |
1513 | delay = 1600 * delay / nimages / nimages; |
1514 | delay = max (delay, 1); | |
98fe5161 | 1515 | |
e9a9ae03 PE |
1516 | t = current_emacs_time (); |
1517 | old = sub_emacs_time (t, EMACS_TIME_FROM_DOUBLE (delay)); | |
98fe5161 CY |
1518 | |
1519 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1520 | { |
98fe5161 | 1521 | struct image *img = c->images[i]; |
d35af63c | 1522 | if (img && EMACS_TIME_LT (img->timestamp, old)) |
98fe5161 CY |
1523 | { |
1524 | free_image (f, img); | |
1525 | ++nfreed; | |
1526 | } | |
4ef0d4d0 KS |
1527 | } |
1528 | } | |
1529 | ||
1530 | /* We may be clearing the image cache because, for example, | |
1531 | Emacs was iconified for a longer period of time. In that | |
1532 | case, current matrices may still contain references to | |
1533 | images freed above. So, clear these matrices. */ | |
1534 | if (nfreed) | |
1535 | { | |
1536 | Lisp_Object tail, frame; | |
1537 | ||
1538 | FOR_EACH_FRAME (tail, frame) | |
1539 | { | |
6ae141d6 PE |
1540 | struct frame *fr = XFRAME (frame); |
1541 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1542 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1543 | } |
1544 | ||
1545 | ++windows_or_buffers_changed; | |
1546 | } | |
1547 | ||
1548 | UNBLOCK_INPUT; | |
1549 | } | |
1550 | } | |
1551 | ||
354884c4 | 1552 | void |
a2bc5bdd | 1553 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1554 | { |
1555 | /* FIXME: We want to do | |
1556 | * struct terminal *t; | |
1557 | * for (t = terminal_list; t; t = t->next_terminal) | |
1558 | * clear_image_cache (t, filter); */ | |
1559 | Lisp_Object tail, frame; | |
1560 | FOR_EACH_FRAME (tail, frame) | |
1561 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1562 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1563 | } |
4ef0d4d0 KS |
1564 | |
1565 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1566 | 0, 1, 0, | |
a2bc5bdd SM |
1567 | doc: /* Clear the image cache. |
1568 | FILTER nil or a frame means clear all images in the selected frame. | |
1569 | FILTER t means clear the image caches of all frames. | |
1570 | Anything else, means only clear those images which refer to FILTER, | |
1571 | which is then usually a filename. */) | |
5842a27b | 1572 | (Lisp_Object filter) |
4ef0d4d0 | 1573 | { |
a2bc5bdd SM |
1574 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1575 | clear_image_caches (filter); | |
4ef0d4d0 | 1576 | else |
a2bc5bdd | 1577 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1578 | |
1579 | return Qnil; | |
1580 | } | |
1581 | ||
1582 | ||
110683ad | 1583 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1584 | 1, 2, 0, |
110683ad CY |
1585 | doc: /* Fush the image with specification SPEC on frame FRAME. |
1586 | This removes the image from the Emacs image cache. If SPEC specifies | |
1587 | an image file, the next redisplay of this image will read from the | |
1588 | current contents of that file. | |
1589 | ||
483e7ae0 CY |
1590 | FRAME nil or omitted means use the selected frame. |
1591 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1592 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1593 | { |
1594 | if (!valid_image_p (spec)) | |
1595 | error ("Invalid image specification"); | |
1596 | ||
1597 | if (EQ (frame, Qt)) | |
1598 | { | |
1599 | Lisp_Object tail; | |
1600 | FOR_EACH_FRAME (tail, frame) | |
1601 | { | |
1602 | struct frame *f = XFRAME (frame); | |
1603 | if (FRAME_WINDOW_P (f)) | |
1604 | uncache_image (f, spec); | |
1605 | } | |
1606 | } | |
1607 | else | |
1608 | uncache_image (check_x_frame (frame), spec); | |
1609 | ||
1610 | return Qnil; | |
1611 | } | |
1612 | ||
1613 | ||
4ef0d4d0 KS |
1614 | /* Compute masks and transform image IMG on frame F, as specified |
1615 | by the image's specification, */ | |
1616 | ||
1617 | static void | |
d3da34e0 | 1618 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1619 | { |
1620 | /* Manipulation of the image's mask. */ | |
1621 | if (img->pixmap) | |
1622 | { | |
1623 | Lisp_Object conversion, spec; | |
1624 | Lisp_Object mask; | |
1625 | ||
1626 | spec = img->spec; | |
1627 | ||
1628 | /* `:heuristic-mask t' | |
1629 | `:mask heuristic' | |
1630 | means build a mask heuristically. | |
1631 | `:heuristic-mask (R G B)' | |
1632 | `:mask (heuristic (R G B))' | |
1633 | means build a mask from color (R G B) in the | |
1634 | image. | |
1635 | `:mask nil' | |
1636 | means remove a mask, if any. */ | |
1637 | ||
1638 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1639 | if (!NILP (mask)) | |
1640 | x_build_heuristic_mask (f, img, mask); | |
1641 | else | |
1642 | { | |
1643 | int found_p; | |
1644 | ||
1645 | mask = image_spec_value (spec, QCmask, &found_p); | |
1646 | ||
1647 | if (EQ (mask, Qheuristic)) | |
1648 | x_build_heuristic_mask (f, img, Qt); | |
1649 | else if (CONSP (mask) | |
1650 | && EQ (XCAR (mask), Qheuristic)) | |
1651 | { | |
1652 | if (CONSP (XCDR (mask))) | |
1653 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1654 | else | |
1655 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1656 | } | |
1657 | else if (NILP (mask) && found_p && img->mask) | |
1658 | { | |
1659 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1660 | img->mask = NO_PIXMAP; | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | ||
1665 | /* Should we apply an image transformation algorithm? */ | |
1666 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1667 | if (EQ (conversion, Qdisabled)) | |
1668 | x_disable_image (f, img); | |
1669 | else if (EQ (conversion, Qlaplace)) | |
1670 | x_laplace (f, img); | |
1671 | else if (EQ (conversion, Qemboss)) | |
1672 | x_emboss (f, img); | |
1673 | else if (CONSP (conversion) | |
1674 | && EQ (XCAR (conversion), Qedge_detection)) | |
1675 | { | |
1676 | Lisp_Object tem; | |
1677 | tem = XCDR (conversion); | |
1678 | if (CONSP (tem)) | |
1679 | x_edge_detection (f, img, | |
1680 | Fplist_get (tem, QCmatrix), | |
1681 | Fplist_get (tem, QCcolor_adjustment)); | |
1682 | } | |
1683 | } | |
1684 | } | |
1685 | ||
1686 | ||
1687 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1688 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1689 | ||
13464394 | 1690 | ptrdiff_t |
d3da34e0 | 1691 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1692 | { |
4ef0d4d0 | 1693 | struct image *img; |
0de4bb68 | 1694 | EMACS_UINT hash; |
4ef0d4d0 KS |
1695 | |
1696 | /* F must be a window-system frame, and SPEC must be a valid image | |
1697 | specification. */ | |
a54e2c05 DA |
1698 | eassert (FRAME_WINDOW_P (f)); |
1699 | eassert (valid_image_p (spec)); | |
4ef0d4d0 | 1700 | |
4ef0d4d0 KS |
1701 | /* Look up SPEC in the hash table of the image cache. */ |
1702 | hash = sxhash (spec, 0); | |
d3c35d17 | 1703 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1704 | if (img && img->load_failed_p) |
1705 | { | |
1706 | free_image (f, img); | |
1707 | img = NULL; | |
1708 | } | |
1709 | ||
4ef0d4d0 KS |
1710 | /* If not found, create a new image and cache it. */ |
1711 | if (img == NULL) | |
1712 | { | |
4ef0d4d0 KS |
1713 | BLOCK_INPUT; |
1714 | img = make_image (spec, hash); | |
1715 | cache_image (f, img); | |
1716 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1717 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1718 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1719 | |
1720 | /* If we can't load the image, and we don't have a width and | |
1721 | height, use some arbitrary width and height so that we can | |
1722 | draw a rectangle for it. */ | |
1723 | if (img->load_failed_p) | |
1724 | { | |
1725 | Lisp_Object value; | |
1726 | ||
1727 | value = image_spec_value (spec, QCwidth, NULL); | |
1728 | img->width = (INTEGERP (value) | |
1729 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1730 | value = image_spec_value (spec, QCheight, NULL); | |
1731 | img->height = (INTEGERP (value) | |
1732 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1733 | } | |
1734 | else | |
1735 | { | |
1736 | /* Handle image type independent image attributes | |
1737 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1738 | `:background COLOR'. */ | |
1739 | Lisp_Object ascent, margin, relief, bg; | |
d311d28c | 1740 | int relief_bound; |
4ef0d4d0 KS |
1741 | |
1742 | ascent = image_spec_value (spec, QCascent, NULL); | |
1743 | if (INTEGERP (ascent)) | |
1744 | img->ascent = XFASTINT (ascent); | |
1745 | else if (EQ (ascent, Qcenter)) | |
1746 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1747 | ||
1748 | margin = image_spec_value (spec, QCmargin, NULL); | |
13464394 | 1749 | if (INTEGERP (margin)) |
4ef0d4d0 | 1750 | img->vmargin = img->hmargin = XFASTINT (margin); |
13464394 | 1751 | else if (CONSP (margin)) |
4ef0d4d0 | 1752 | { |
13464394 PE |
1753 | img->hmargin = XFASTINT (XCAR (margin)); |
1754 | img->vmargin = XFASTINT (XCDR (margin)); | |
4ef0d4d0 KS |
1755 | } |
1756 | ||
1757 | relief = image_spec_value (spec, QCrelief, NULL); | |
d311d28c PE |
1758 | relief_bound = INT_MAX - max (img->hmargin, img->vmargin); |
1759 | if (RANGED_INTEGERP (- relief_bound, relief, relief_bound)) | |
4ef0d4d0 KS |
1760 | { |
1761 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1762 | img->hmargin += eabs (img->relief); |
1763 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1764 | } |
1765 | ||
1766 | if (! img->background_valid) | |
1767 | { | |
1768 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1769 | if (!NILP (bg)) | |
1770 | { | |
1771 | img->background | |
1772 | = x_alloc_image_color (f, img, bg, | |
1773 | FRAME_BACKGROUND_PIXEL (f)); | |
1774 | img->background_valid = 1; | |
1775 | } | |
1776 | } | |
1777 | ||
1778 | /* Do image transformations and compute masks, unless we | |
1779 | don't have the image yet. */ | |
1780 | if (!EQ (*img->type->type, Qpostscript)) | |
1781 | postprocess_image (f, img); | |
1782 | } | |
1783 | ||
1784 | UNBLOCK_INPUT; | |
1785 | } | |
1786 | ||
1787 | /* We're using IMG, so set its timestamp to `now'. */ | |
e9a9ae03 | 1788 | img->timestamp = current_emacs_time (); |
4ef0d4d0 | 1789 | |
4ef0d4d0 KS |
1790 | /* Value is the image id. */ |
1791 | return img->id; | |
1792 | } | |
1793 | ||
1794 | ||
1795 | /* Cache image IMG in the image cache of frame F. */ | |
1796 | ||
1797 | static void | |
d3da34e0 | 1798 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1799 | { |
354884c4 | 1800 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 | 1801 | ptrdiff_t i; |
4ef0d4d0 KS |
1802 | |
1803 | /* Find a free slot in c->images. */ | |
1804 | for (i = 0; i < c->used; ++i) | |
1805 | if (c->images[i] == NULL) | |
1806 | break; | |
1807 | ||
1808 | /* If no free slot found, maybe enlarge c->images. */ | |
1809 | if (i == c->used && c->used == c->size) | |
a69fbedb | 1810 | c->images = xpalloc (c->images, &c->size, 1, -1, sizeof *c->images); |
4ef0d4d0 KS |
1811 | |
1812 | /* Add IMG to c->images, and assign IMG an id. */ | |
1813 | c->images[i] = img; | |
1814 | img->id = i; | |
1815 | if (i == c->used) | |
1816 | ++c->used; | |
1817 | ||
1818 | /* Add IMG to the cache's hash table. */ | |
1819 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1820 | img->next = c->buckets[i]; | |
1821 | if (img->next) | |
1822 | img->next->prev = img; | |
1823 | img->prev = NULL; | |
1824 | c->buckets[i] = img; | |
1825 | } | |
1826 | ||
1827 | ||
1828 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1829 | Lisp Objects in the image cache. */ | |
1830 | ||
354884c4 SM |
1831 | /* Mark Lisp objects in image IMG. */ |
1832 | ||
1833 | static void | |
d3da34e0 | 1834 | mark_image (struct image *img) |
354884c4 SM |
1835 | { |
1836 | mark_object (img->spec); | |
a2bc5bdd | 1837 | mark_object (img->dependencies); |
354884c4 | 1838 | |
b50691aa CY |
1839 | if (!NILP (img->lisp_data)) |
1840 | mark_object (img->lisp_data); | |
354884c4 SM |
1841 | } |
1842 | ||
1843 | ||
4ef0d4d0 | 1844 | void |
354884c4 | 1845 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1846 | { |
354884c4 | 1847 | if (c) |
4ef0d4d0 | 1848 | { |
13464394 | 1849 | ptrdiff_t i; |
354884c4 SM |
1850 | for (i = 0; i < c->used; ++i) |
1851 | if (c->images[i]) | |
1852 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1853 | } |
1854 | } | |
1855 | ||
1856 | ||
1857 | \f | |
1858 | /*********************************************************************** | |
9e2a2647 | 1859 | X / NS / W32 support code |
4ef0d4d0 KS |
1860 | ***********************************************************************/ |
1861 | ||
1862 | #ifdef HAVE_NTGUI | |
1863 | ||
1864 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1865 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1866 | |
1867 | /* Macro for loading those image functions from the library. */ | |
1868 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1869 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1870 | if (!fn_##func) return 0; \ | |
1871 | } | |
1872 | ||
1873 | #endif /* HAVE_NTGUI */ | |
1874 | ||
f57e2426 J |
1875 | static int x_create_x_image_and_pixmap (struct frame *, int, int, int, |
1876 | XImagePtr *, Pixmap *); | |
1877 | static void x_destroy_x_image (XImagePtr); | |
1878 | static void x_put_x_image (struct frame *, XImagePtr, Pixmap, int, int); | |
4ef0d4d0 | 1879 | |
476371c4 PE |
1880 | /* Return nonzero if XIMG's size WIDTH x HEIGHT doesn't break the |
1881 | windowing system. | |
ca4aa935 PE |
1882 | WIDTH and HEIGHT must both be positive. |
1883 | If XIMG is null, assume it is a bitmap. */ | |
1884 | static int | |
1885 | x_check_image_size (XImagePtr ximg, int width, int height) | |
1886 | { | |
476371c4 | 1887 | #ifdef HAVE_X_WINDOWS |
ca4aa935 PE |
1888 | /* Respect Xlib's limits: it cannot deal with images that have more |
1889 | than INT_MAX (and/or UINT_MAX) bytes. And respect Emacs's limits | |
476371c4 | 1890 | of PTRDIFF_MAX (and/or SIZE_MAX) bytes for any object. */ |
ca4aa935 PE |
1891 | enum |
1892 | { | |
1893 | XLIB_BYTES_MAX = min (INT_MAX, UINT_MAX), | |
1894 | X_IMAGE_BYTES_MAX = min (XLIB_BYTES_MAX, min (PTRDIFF_MAX, SIZE_MAX)) | |
1895 | }; | |
1896 | ||
1897 | int bitmap_pad, depth, bytes_per_line; | |
1898 | if (ximg) | |
1899 | { | |
1900 | bitmap_pad = ximg->bitmap_pad; | |
1901 | depth = ximg->depth; | |
1902 | bytes_per_line = ximg->bytes_per_line; | |
1903 | } | |
1904 | else | |
1905 | { | |
1906 | bitmap_pad = 8; | |
1907 | depth = 1; | |
1908 | bytes_per_line = (width >> 3) + ((width & 7) != 0); | |
1909 | } | |
1910 | return (width <= (INT_MAX - (bitmap_pad - 1)) / depth | |
1911 | && height <= X_IMAGE_BYTES_MAX / bytes_per_line); | |
476371c4 PE |
1912 | #else |
1913 | /* FIXME: Implement this check for the HAVE_NS and HAVE_NTGUI cases. | |
1914 | For now, assume that every image size is allowed on these systems. */ | |
1915 | return 1; | |
1916 | #endif | |
ca4aa935 | 1917 | } |
4ef0d4d0 KS |
1918 | |
1919 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1920 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1921 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1922 | via xmalloc. Print error messages via image_error if an error | |
1923 | occurs. Value is non-zero if successful. | |
1924 | ||
1925 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1926 | should indicate the bit depth of the image. */ | |
1927 | ||
1928 | static int | |
d3da34e0 JB |
1929 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1930 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1931 | { |
1932 | #ifdef HAVE_X_WINDOWS | |
1933 | Display *display = FRAME_X_DISPLAY (f); | |
1934 | Window window = FRAME_X_WINDOW (f); | |
1935 | Screen *screen = FRAME_X_SCREEN (f); | |
1936 | ||
a54e2c05 | 1937 | eassert (interrupt_input_blocked); |
4ef0d4d0 KS |
1938 | |
1939 | if (depth <= 0) | |
1940 | depth = DefaultDepthOfScreen (screen); | |
1941 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1942 | depth, ZPixmap, 0, NULL, width, height, | |
1943 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1944 | if (*ximg == NULL) | |
1945 | { | |
1946 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1947 | return 0; | |
1948 | } | |
1949 | ||
ca4aa935 PE |
1950 | if (! x_check_image_size (*ximg, width, height)) |
1951 | { | |
1952 | x_destroy_x_image (*ximg); | |
1953 | *ximg = NULL; | |
1954 | image_error ("Image too large (%dx%d)", | |
1955 | make_number (width), make_number (height)); | |
1956 | return 0; | |
1957 | } | |
1958 | ||
4ef0d4d0 | 1959 | /* Allocate image raster. */ |
23f86fce | 1960 | (*ximg)->data = xmalloc ((*ximg)->bytes_per_line * height); |
4ef0d4d0 KS |
1961 | |
1962 | /* Allocate a pixmap of the same size. */ | |
1963 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1964 | if (*pixmap == NO_PIXMAP) | |
1965 | { | |
1966 | x_destroy_x_image (*ximg); | |
1967 | *ximg = NULL; | |
1968 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1969 | return 0; | |
1970 | } | |
1971 | ||
1972 | return 1; | |
1973 | #endif /* HAVE_X_WINDOWS */ | |
1974 | ||
1975 | #ifdef HAVE_NTGUI | |
1976 | ||
1977 | BITMAPINFOHEADER *header; | |
1978 | HDC hdc; | |
1979 | int scanline_width_bits; | |
1980 | int remainder; | |
1981 | int palette_colors = 0; | |
1982 | ||
1983 | if (depth == 0) | |
1984 | depth = 24; | |
1985 | ||
1986 | if (depth != 1 && depth != 4 && depth != 8 | |
1987 | && depth != 16 && depth != 24 && depth != 32) | |
1988 | { | |
1989 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
1990 | return 0; | |
1991 | } | |
1992 | ||
1993 | scanline_width_bits = width * depth; | |
1994 | remainder = scanline_width_bits % 32; | |
1995 | ||
1996 | if (remainder) | |
1997 | scanline_width_bits += 32 - remainder; | |
1998 | ||
1999 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2000 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2001 | if (depth < 16) | |
657d08d3 | 2002 | palette_colors = 1 << (depth - 1); |
4ef0d4d0 KS |
2003 | |
2004 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
4ef0d4d0 | 2005 | |
72af86bd AS |
2006 | header = &(*ximg)->info.bmiHeader; |
2007 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
2008 | header->biSize = sizeof (*header); |
2009 | header->biWidth = width; | |
2010 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2011 | header->biPlanes = 1; | |
2012 | header->biBitCount = depth; | |
2013 | header->biCompression = BI_RGB; | |
2014 | header->biClrUsed = palette_colors; | |
2015 | ||
2016 | /* TODO: fill in palette. */ | |
2017 | if (depth == 1) | |
2018 | { | |
2019 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2020 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2021 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2022 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2023 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2024 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2025 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2026 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2027 | } | |
2028 | ||
2029 | hdc = get_frame_dc (f); | |
2030 | ||
2031 | /* Create a DIBSection and raster array for the bitmap, | |
2032 | and store its handle in *pixmap. */ | |
2033 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2034 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2035 | /* casting avoids a GCC warning */ |
2036 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2037 | |
2038 | /* Realize display palette and garbage all frames. */ | |
2039 | release_frame_dc (f, hdc); | |
2040 | ||
2041 | if (*pixmap == NULL) | |
2042 | { | |
5fc9fdeb | 2043 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2044 | Lisp_Object errcode; |
2045 | /* All system errors are < 10000, so the following is safe. */ | |
13464394 | 2046 | XSETINT (errcode, err); |
4ef0d4d0 KS |
2047 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); |
2048 | x_destroy_x_image (*ximg); | |
2049 | return 0; | |
2050 | } | |
2051 | ||
2052 | return 1; | |
2053 | ||
2054 | #endif /* HAVE_NTGUI */ | |
2055 | ||
edfda783 | 2056 | #ifdef HAVE_NS |
ed3751c8 | 2057 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2058 | if (*pixmap == 0) |
2059 | { | |
2060 | *ximg = NULL; | |
2061 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2062 | return 0; | |
2063 | } | |
2064 | *ximg = *pixmap; | |
2065 | return 1; | |
2066 | #endif | |
4ef0d4d0 KS |
2067 | } |
2068 | ||
2069 | ||
2070 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2071 | ||
2072 | static void | |
d3da34e0 | 2073 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 | 2074 | { |
a54e2c05 | 2075 | eassert (interrupt_input_blocked); |
4ef0d4d0 KS |
2076 | if (ximg) |
2077 | { | |
2078 | #ifdef HAVE_X_WINDOWS | |
2079 | xfree (ximg->data); | |
2080 | ximg->data = NULL; | |
2081 | XDestroyImage (ximg); | |
2082 | #endif /* HAVE_X_WINDOWS */ | |
2083 | #ifdef HAVE_NTGUI | |
2084 | /* Data will be freed by DestroyObject. */ | |
2085 | ximg->data = NULL; | |
2086 | xfree (ximg); | |
2087 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2088 | #ifdef HAVE_NS |
ed3751c8 | 2089 | ns_release_object (ximg); |
edfda783 | 2090 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2091 | } |
2092 | } | |
2093 | ||
2094 | ||
2095 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2096 | are width and height of both the image and pixmap. */ | |
2097 | ||
2098 | static void | |
d3da34e0 | 2099 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2100 | { |
2101 | #ifdef HAVE_X_WINDOWS | |
2102 | GC gc; | |
2103 | ||
a54e2c05 | 2104 | eassert (interrupt_input_blocked); |
4ef0d4d0 KS |
2105 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); |
2106 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2107 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2108 | #endif /* HAVE_X_WINDOWS */ | |
2109 | ||
2110 | #ifdef HAVE_NTGUI | |
2111 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2112 | HDC hdc = get_frame_dc (f); | |
2113 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2114 | release_frame_dc (f, hdc); | |
2115 | #endif | |
2116 | #endif /* HAVE_NTGUI */ | |
2117 | ||
edfda783 | 2118 | #ifdef HAVE_NS |
a54e2c05 | 2119 | eassert (ximg == pixmap); |
ed3751c8 | 2120 | ns_retain_object (ximg); |
edfda783 | 2121 | #endif |
4ef0d4d0 KS |
2122 | } |
2123 | ||
2124 | \f | |
2125 | /*********************************************************************** | |
2126 | File Handling | |
2127 | ***********************************************************************/ | |
2128 | ||
6678dc11 | 2129 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2130 | x-bitmap-file-path. Value is the encoded full name of the file |
2131 | found, or nil if not found. */ | |
4ef0d4d0 | 2132 | |
c640aa9b | 2133 | Lisp_Object |
d3da34e0 | 2134 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2135 | { |
2136 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2137 | int fd; |
2138 | ||
6678dc11 GM |
2139 | /* TODO I think this should use something like image-load-path |
2140 | instead. Unfortunately, that can contain non-string elements. */ | |
2141 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2142 | Vdata_directory), | |
2143 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2144 | |
050b82f6 | 2145 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2146 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2147 | ||
2148 | if (fd == -1) | |
2149 | file_found = Qnil; | |
2150 | else | |
022af124 KH |
2151 | { |
2152 | file_found = ENCODE_FILE (file_found); | |
2153 | close (fd); | |
2154 | } | |
4ef0d4d0 | 2155 | |
4ef0d4d0 KS |
2156 | return file_found; |
2157 | } | |
2158 | ||
2159 | ||
2160 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2161 | with xmalloc holding FILE's contents. Value is null if an error | |
2162 | occurred. *SIZE is set to the size of the file. */ | |
2163 | ||
2164 | static unsigned char * | |
dd52fcea | 2165 | slurp_file (char *file, ptrdiff_t *size) |
4ef0d4d0 KS |
2166 | { |
2167 | FILE *fp = NULL; | |
2168 | unsigned char *buf = NULL; | |
2169 | struct stat st; | |
2170 | ||
2171 | if (stat (file, &st) == 0 | |
2172 | && (fp = fopen (file, "rb")) != NULL | |
dd52fcea | 2173 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
23f86fce | 2174 | && (buf = xmalloc (st.st_size), |
4ef0d4d0 KS |
2175 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2176 | { | |
2177 | *size = st.st_size; | |
2178 | fclose (fp); | |
2179 | } | |
2180 | else | |
2181 | { | |
2182 | if (fp) | |
2183 | fclose (fp); | |
2184 | if (buf) | |
2185 | { | |
2186 | xfree (buf); | |
2187 | buf = NULL; | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | return buf; | |
2192 | } | |
2193 | ||
2194 | ||
2195 | \f | |
4ef0d4d0 KS |
2196 | /*********************************************************************** |
2197 | XBM images | |
2198 | ***********************************************************************/ | |
2199 | ||
f57e2426 J |
2200 | static int xbm_scan (unsigned char **, unsigned char *, char *, int *); |
2201 | static int xbm_load (struct frame *f, struct image *img); | |
2202 | static int xbm_load_image (struct frame *f, struct image *img, | |
2203 | unsigned char *, unsigned char *); | |
2204 | static int xbm_image_p (Lisp_Object object); | |
2205 | static int xbm_read_bitmap_data (struct frame *f, | |
2206 | unsigned char *, unsigned char *, | |
b8dc29e9 | 2207 | int *, int *, char **, int); |
f57e2426 | 2208 | static int xbm_file_p (Lisp_Object); |
4ef0d4d0 KS |
2209 | |
2210 | ||
2211 | /* Indices of image specification fields in xbm_format, below. */ | |
2212 | ||
2213 | enum xbm_keyword_index | |
2214 | { | |
2215 | XBM_TYPE, | |
2216 | XBM_FILE, | |
2217 | XBM_WIDTH, | |
2218 | XBM_HEIGHT, | |
2219 | XBM_DATA, | |
2220 | XBM_FOREGROUND, | |
2221 | XBM_BACKGROUND, | |
2222 | XBM_ASCENT, | |
2223 | XBM_MARGIN, | |
2224 | XBM_RELIEF, | |
2225 | XBM_ALGORITHM, | |
2226 | XBM_HEURISTIC_MASK, | |
2227 | XBM_MASK, | |
2228 | XBM_LAST | |
2229 | }; | |
2230 | ||
2231 | /* Vector of image_keyword structures describing the format | |
2232 | of valid XBM image specifications. */ | |
2233 | ||
91433552 | 2234 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2235 | { |
2236 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2237 | {":file", IMAGE_STRING_VALUE, 0}, | |
2238 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2239 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2240 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2241 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2242 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2243 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 2244 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
2245 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
2246 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2247 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2248 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2249 | }; | |
2250 | ||
2251 | /* Structure describing the image type XBM. */ | |
2252 | ||
2253 | static struct image_type xbm_type = | |
2254 | { | |
2255 | &Qxbm, | |
2256 | xbm_image_p, | |
2257 | xbm_load, | |
2258 | x_clear_image, | |
2259 | NULL | |
2260 | }; | |
2261 | ||
2262 | /* Tokens returned from xbm_scan. */ | |
2263 | ||
2264 | enum xbm_token | |
2265 | { | |
2266 | XBM_TK_IDENT = 256, | |
2267 | XBM_TK_NUMBER | |
2268 | }; | |
2269 | ||
2270 | ||
2271 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2272 | A valid specification is a list starting with the symbol `image' | |
2273 | The rest of the list is a property list which must contain an | |
2274 | entry `:type xbm.. | |
2275 | ||
2276 | If the specification specifies a file to load, it must contain | |
2277 | an entry `:file FILENAME' where FILENAME is a string. | |
2278 | ||
2279 | If the specification is for a bitmap loaded from memory it must | |
2280 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2281 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2282 | ||
2283 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2284 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2285 | ||
2286 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2287 | ||
2288 | 3. a vector of strings or bool-vectors, one for each line of the | |
2289 | bitmap. | |
2290 | ||
bbe6f2aa | 2291 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2292 | may not be specified in this case because they are defined in the |
2293 | XBM file. | |
2294 | ||
2295 | Both the file and data forms may contain the additional entries | |
2296 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2297 | foreground and background of the frame on which the image is | |
2298 | displayed is used. */ | |
2299 | ||
2300 | static int | |
d3da34e0 | 2301 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2302 | { |
2303 | struct image_keyword kw[XBM_LAST]; | |
2304 | ||
72af86bd | 2305 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2306 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2307 | return 0; | |
2308 | ||
a54e2c05 | 2309 | eassert (EQ (kw[XBM_TYPE].value, Qxbm)); |
4ef0d4d0 KS |
2310 | |
2311 | if (kw[XBM_FILE].count) | |
2312 | { | |
2313 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2314 | return 0; | |
2315 | } | |
2316 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2317 | { | |
2318 | /* In-memory XBM file. */ | |
2319 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2320 | return 0; | |
2321 | } | |
2322 | else | |
2323 | { | |
2324 | Lisp_Object data; | |
13464394 | 2325 | int width, height; |
4ef0d4d0 KS |
2326 | |
2327 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2328 | if (!kw[XBM_WIDTH].count | |
2329 | || !kw[XBM_HEIGHT].count | |
2330 | || !kw[XBM_DATA].count) | |
2331 | return 0; | |
2332 | ||
2333 | data = kw[XBM_DATA].value; | |
2334 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2335 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2336 | ||
2337 | /* Check type of data, and width and height against contents of | |
2338 | data. */ | |
2339 | if (VECTORP (data)) | |
2340 | { | |
45aebb64 | 2341 | EMACS_INT i; |
4ef0d4d0 KS |
2342 | |
2343 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2344 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2345 | return 0; |
2346 | ||
2347 | /* Each string or bool-vector in data must be large enough | |
2348 | for one line of the image. */ | |
2349 | for (i = 0; i < height; ++i) | |
2350 | { | |
28be1ada | 2351 | Lisp_Object elt = AREF (data, i); |
4ef0d4d0 KS |
2352 | |
2353 | if (STRINGP (elt)) | |
2354 | { | |
2355 | if (SCHARS (elt) | |
2356 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2357 | return 0; | |
2358 | } | |
2359 | else if (BOOL_VECTOR_P (elt)) | |
2360 | { | |
2361 | if (XBOOL_VECTOR (elt)->size < width) | |
2362 | return 0; | |
2363 | } | |
2364 | else | |
2365 | return 0; | |
2366 | } | |
2367 | } | |
2368 | else if (STRINGP (data)) | |
2369 | { | |
2370 | if (SCHARS (data) | |
2371 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2372 | return 0; | |
2373 | } | |
2374 | else if (BOOL_VECTOR_P (data)) | |
2375 | { | |
ca4aa935 | 2376 | if (XBOOL_VECTOR (data)->size / height < width) |
4ef0d4d0 KS |
2377 | return 0; |
2378 | } | |
2379 | else | |
2380 | return 0; | |
2381 | } | |
2382 | ||
2383 | return 1; | |
2384 | } | |
2385 | ||
2386 | ||
2387 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2388 | either an enumerator from enum xbm_token, or a character for a | |
2389 | single-character token, or 0 at end of file. If scanning an | |
2390 | identifier, store the lexeme of the identifier in SVAL. If | |
2391 | scanning a number, store its value in *IVAL. */ | |
2392 | ||
2393 | static int | |
d3da34e0 | 2394 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2395 | { |
2396 | unsigned int c; | |
2397 | ||
2398 | loop: | |
2399 | ||
2400 | /* Skip white space. */ | |
620f13b0 | 2401 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
2402 | ; |
2403 | ||
2404 | if (*s >= end) | |
2405 | c = 0; | |
620f13b0 | 2406 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2407 | { |
2408 | int value = 0, digit; | |
2409 | ||
2410 | if (c == '0' && *s < end) | |
2411 | { | |
2412 | c = *(*s)++; | |
2413 | if (c == 'x' || c == 'X') | |
2414 | { | |
2415 | while (*s < end) | |
2416 | { | |
2417 | c = *(*s)++; | |
620f13b0 | 2418 | if (c_isdigit (c)) |
4ef0d4d0 KS |
2419 | digit = c - '0'; |
2420 | else if (c >= 'a' && c <= 'f') | |
2421 | digit = c - 'a' + 10; | |
2422 | else if (c >= 'A' && c <= 'F') | |
2423 | digit = c - 'A' + 10; | |
2424 | else | |
2425 | break; | |
2426 | value = 16 * value + digit; | |
2427 | } | |
2428 | } | |
620f13b0 | 2429 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
2430 | { |
2431 | value = c - '0'; | |
2432 | while (*s < end | |
620f13b0 | 2433 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2434 | value = 8 * value + c - '0'; |
2435 | } | |
2436 | } | |
2437 | else | |
2438 | { | |
2439 | value = c - '0'; | |
2440 | while (*s < end | |
620f13b0 | 2441 | && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
2442 | value = 10 * value + c - '0'; |
2443 | } | |
2444 | ||
2445 | if (*s < end) | |
2446 | *s = *s - 1; | |
2447 | *ival = value; | |
2448 | c = XBM_TK_NUMBER; | |
2449 | } | |
620f13b0 | 2450 | else if (c_isalpha (c) || c == '_') |
4ef0d4d0 KS |
2451 | { |
2452 | *sval++ = c; | |
2453 | while (*s < end | |
620f13b0 | 2454 | && (c = *(*s)++, (c_isalnum (c) || c == '_'))) |
4ef0d4d0 KS |
2455 | *sval++ = c; |
2456 | *sval = 0; | |
2457 | if (*s < end) | |
2458 | *s = *s - 1; | |
2459 | c = XBM_TK_IDENT; | |
2460 | } | |
2461 | else if (c == '/' && **s == '*') | |
2462 | { | |
2463 | /* C-style comment. */ | |
2464 | ++*s; | |
2465 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2466 | ++*s; | |
2467 | if (**s) | |
2468 | { | |
2469 | *s += 2; | |
2470 | goto loop; | |
2471 | } | |
2472 | } | |
2473 | ||
2474 | return c; | |
2475 | } | |
2476 | ||
2477 | #ifdef HAVE_NTGUI | |
2478 | ||
2479 | /* Create a Windows bitmap from X bitmap data. */ | |
2480 | static HBITMAP | |
2481 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2482 | { | |
2483 | static unsigned char swap_nibble[16] | |
2484 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2485 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2486 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2487 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2488 | int i, j, w1, w2; | |
2489 | unsigned char *bits, *p; | |
2490 | HBITMAP bmp; | |
2491 | ||
2492 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2493 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
38182d90 | 2494 | bits = alloca (height * w2); |
72af86bd | 2495 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2496 | for (i = 0; i < height; i++) |
2497 | { | |
2498 | p = bits + i*w2; | |
2499 | for (j = 0; j < w1; j++) | |
2500 | { | |
2501 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2502 | unsigned char c = *data++; | |
2503 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2504 | | (swap_nibble[(c>>4) & 0xf])); | |
2505 | } | |
2506 | } | |
2507 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2508 | ||
2509 | return bmp; | |
2510 | } | |
2511 | ||
3046a84b | 2512 | static void |
7c3320d8 JB |
2513 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2514 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2515 | { |
2516 | HDC hdc, old_img_dc, new_img_dc; | |
2517 | HGDIOBJ old_prev, new_prev; | |
2518 | HBITMAP new_pixmap; | |
2519 | ||
2520 | hdc = get_frame_dc (f); | |
2521 | old_img_dc = CreateCompatibleDC (hdc); | |
2522 | new_img_dc = CreateCompatibleDC (hdc); | |
2523 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2524 | release_frame_dc (f, hdc); | |
2525 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2526 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2527 | /* Windows convention for mono bitmaps is black = background, |
2528 | white = foreground. */ | |
2386b1f1 JR |
2529 | SetTextColor (new_img_dc, background); |
2530 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2531 | |
2532 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2533 | 0, 0, SRCCOPY); | |
2534 | ||
2535 | SelectObject (old_img_dc, old_prev); | |
2536 | SelectObject (new_img_dc, new_prev); | |
2537 | DeleteDC (old_img_dc); | |
2538 | DeleteDC (new_img_dc); | |
2539 | DeleteObject (img->pixmap); | |
2540 | if (new_pixmap == 0) | |
2541 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2542 | else | |
2543 | img->pixmap = new_pixmap; | |
2544 | } | |
2545 | ||
2546 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2547 | ||
2548 | #else | |
2549 | ||
2550 | #define XBM_BIT_SHUFFLE(b) (b) | |
2551 | ||
2552 | #endif /* HAVE_NTGUI */ | |
2553 | ||
2554 | ||
2555 | static void | |
d3da34e0 JB |
2556 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2557 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
2558 | int non_default_colors) | |
4ef0d4d0 KS |
2559 | { |
2560 | #ifdef HAVE_NTGUI | |
2561 | img->pixmap | |
2562 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2563 | ||
2564 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2565 | if (non_default_colors) | |
2566 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2567 | |
2568 | #elif defined (HAVE_NS) | |
ed3751c8 | 2569 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2570 | |
4ef0d4d0 | 2571 | #else |
ca4aa935 PE |
2572 | img->pixmap = |
2573 | (x_check_image_size (0, img->width, img->height) | |
2574 | ? XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
4ef0d4d0 KS |
2575 | FRAME_X_WINDOW (f), |
2576 | data, | |
2577 | img->width, img->height, | |
2578 | fg, bg, | |
ca4aa935 PE |
2579 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))) |
2580 | : NO_PIXMAP); | |
edfda783 | 2581 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2582 | } |
2583 | ||
2584 | ||
2585 | ||
2586 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2587 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2588 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2589 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
2590 | Value is non-zero if successful. DATA null means just test if | |
ce959360 CY |
2591 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR |
2592 | is non-zero, inhibit the call to image_error when the image size is | |
2593 | invalid (the bitmap remains unread). */ | |
4ef0d4d0 KS |
2594 | |
2595 | static int | |
d3da34e0 | 2596 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2597 | int *width, int *height, char **data, |
d3da34e0 | 2598 | int inhibit_image_error) |
4ef0d4d0 KS |
2599 | { |
2600 | unsigned char *s = contents; | |
2601 | char buffer[BUFSIZ]; | |
2602 | int padding_p = 0; | |
2603 | int v10 = 0; | |
ca4aa935 | 2604 | int bytes_per_line, i, nbytes; |
b8dc29e9 | 2605 | char *p; |
4ef0d4d0 KS |
2606 | int value; |
2607 | int LA1; | |
2608 | ||
2609 | #define match() \ | |
2610 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2611 | ||
2612 | #define expect(TOKEN) \ | |
2613 | if (LA1 != (TOKEN)) \ | |
2614 | goto failure; \ | |
2615 | else \ | |
2616 | match () | |
2617 | ||
2618 | #define expect_ident(IDENT) \ | |
2619 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2620 | match (); \ | |
2621 | else \ | |
2622 | goto failure | |
2623 | ||
2624 | *width = *height = -1; | |
2625 | if (data) | |
2626 | *data = NULL; | |
2627 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2628 | ||
2629 | /* Parse defines for width, height and hot-spots. */ | |
2630 | while (LA1 == '#') | |
2631 | { | |
2632 | match (); | |
2633 | expect_ident ("define"); | |
2634 | expect (XBM_TK_IDENT); | |
2635 | ||
431feaf6 | 2636 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2637 | { |
6ae141d6 PE |
2638 | char *q = strrchr (buffer, '_'); |
2639 | q = q ? q + 1 : buffer; | |
2640 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2641 | *width = value; |
6ae141d6 | 2642 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2643 | *height = value; |
2644 | } | |
2645 | expect (XBM_TK_NUMBER); | |
2646 | } | |
2647 | ||
f1f25b99 | 2648 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2649 | { |
ce959360 CY |
2650 | if (!inhibit_image_error) |
2651 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2652 | goto failure; |
2653 | } | |
4ef0d4d0 KS |
2654 | else if (data == NULL) |
2655 | goto success; | |
2656 | ||
2657 | /* Parse bits. Must start with `static'. */ | |
2658 | expect_ident ("static"); | |
2659 | if (LA1 == XBM_TK_IDENT) | |
2660 | { | |
2661 | if (strcmp (buffer, "unsigned") == 0) | |
2662 | { | |
2663 | match (); | |
2664 | expect_ident ("char"); | |
2665 | } | |
2666 | else if (strcmp (buffer, "short") == 0) | |
2667 | { | |
2668 | match (); | |
2669 | v10 = 1; | |
2670 | if (*width % 16 && *width % 16 < 9) | |
2671 | padding_p = 1; | |
2672 | } | |
2673 | else if (strcmp (buffer, "char") == 0) | |
2674 | match (); | |
2675 | else | |
2676 | goto failure; | |
2677 | } | |
2678 | else | |
2679 | goto failure; | |
2680 | ||
2681 | expect (XBM_TK_IDENT); | |
2682 | expect ('['); | |
2683 | expect (']'); | |
2684 | expect ('='); | |
2685 | expect ('{'); | |
2686 | ||
ca4aa935 PE |
2687 | if (! x_check_image_size (0, *width, *height)) |
2688 | { | |
2689 | if (!inhibit_image_error) | |
2690 | image_error ("Image too large (%dx%d)", | |
2691 | make_number (*width), make_number (*height)); | |
2692 | goto failure; | |
2693 | } | |
4ef0d4d0 KS |
2694 | bytes_per_line = (*width + 7) / 8 + padding_p; |
2695 | nbytes = bytes_per_line * *height; | |
23f86fce | 2696 | p = *data = xmalloc (nbytes); |
4ef0d4d0 KS |
2697 | |
2698 | if (v10) | |
2699 | { | |
2700 | for (i = 0; i < nbytes; i += 2) | |
2701 | { | |
2702 | int val = value; | |
2703 | expect (XBM_TK_NUMBER); | |
2704 | ||
2705 | *p++ = XBM_BIT_SHUFFLE (val); | |
2706 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2707 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2708 | ||
2709 | if (LA1 == ',' || LA1 == '}') | |
2710 | match (); | |
2711 | else | |
2712 | goto failure; | |
2713 | } | |
2714 | } | |
2715 | else | |
2716 | { | |
2717 | for (i = 0; i < nbytes; ++i) | |
2718 | { | |
2719 | int val = value; | |
2720 | expect (XBM_TK_NUMBER); | |
2721 | ||
2722 | *p++ = XBM_BIT_SHUFFLE (val); | |
2723 | ||
2724 | if (LA1 == ',' || LA1 == '}') | |
2725 | match (); | |
2726 | else | |
2727 | goto failure; | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | success: | |
2732 | return 1; | |
2733 | ||
2734 | failure: | |
2735 | ||
2736 | if (data && *data) | |
2737 | { | |
2738 | xfree (*data); | |
2739 | *data = NULL; | |
2740 | } | |
2741 | return 0; | |
2742 | ||
2743 | #undef match | |
2744 | #undef expect | |
2745 | #undef expect_ident | |
2746 | } | |
2747 | ||
2748 | ||
2749 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
2750 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
2751 | successful. */ | |
2752 | ||
2753 | static int | |
d3da34e0 JB |
2754 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2755 | unsigned char *end) | |
4ef0d4d0 KS |
2756 | { |
2757 | int rc; | |
b8dc29e9 | 2758 | char *data; |
4ef0d4d0 KS |
2759 | int success_p = 0; |
2760 | ||
ce959360 CY |
2761 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2762 | &data, 0); | |
4ef0d4d0 KS |
2763 | if (rc) |
2764 | { | |
2765 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2766 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2767 | int non_default_colors = 0; | |
2768 | Lisp_Object value; | |
2769 | ||
a54e2c05 | 2770 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
2771 | |
2772 | /* Get foreground and background colors, maybe allocate colors. */ | |
2773 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2774 | if (!NILP (value)) | |
2775 | { | |
2776 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2777 | non_default_colors = 1; | |
2778 | } | |
2779 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2780 | if (!NILP (value)) | |
2781 | { | |
2782 | background = x_alloc_image_color (f, img, value, background); | |
2783 | img->background = background; | |
2784 | img->background_valid = 1; | |
2785 | non_default_colors = 1; | |
2786 | } | |
2787 | ||
1f026899 | 2788 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2789 | foreground, background, |
2790 | non_default_colors); | |
2791 | xfree (data); | |
2792 | ||
2793 | if (img->pixmap == NO_PIXMAP) | |
2794 | { | |
2795 | x_clear_image (f, img); | |
2796 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2797 | } | |
2798 | else | |
2799 | success_p = 1; | |
2800 | } | |
2801 | else | |
2802 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2803 | ||
2804 | return success_p; | |
2805 | } | |
2806 | ||
2807 | ||
2808 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
2809 | ||
2810 | static int | |
d3da34e0 | 2811 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2812 | { |
2813 | int w, h; | |
2814 | return (STRINGP (data) | |
f1f25b99 | 2815 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2816 | (SDATA (data) + SBYTES (data)), |
2817 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2818 | } |
2819 | ||
2820 | ||
2821 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
2822 | non-zero if successful. */ | |
2823 | ||
2824 | static int | |
d3da34e0 | 2825 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
2826 | { |
2827 | int success_p = 0; | |
2828 | Lisp_Object file_name; | |
2829 | ||
a54e2c05 | 2830 | eassert (xbm_image_p (img->spec)); |
4ef0d4d0 KS |
2831 | |
2832 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2833 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2834 | if (STRINGP (file_name)) | |
2835 | { | |
2836 | Lisp_Object file; | |
2837 | unsigned char *contents; | |
dd52fcea | 2838 | ptrdiff_t size; |
4ef0d4d0 KS |
2839 | |
2840 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2841 | if (!STRINGP (file)) |
2842 | { | |
2843 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2844 | return 0; |
2845 | } | |
2846 | ||
42a5b22f | 2847 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2848 | if (contents == NULL) |
2849 | { | |
2850 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2851 | return 0; |
2852 | } | |
2853 | ||
2854 | success_p = xbm_load_image (f, img, contents, contents + size); | |
d5a19415 | 2855 | xfree (contents); |
4ef0d4d0 KS |
2856 | } |
2857 | else | |
2858 | { | |
2859 | struct image_keyword fmt[XBM_LAST]; | |
2860 | Lisp_Object data; | |
2861 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2862 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2863 | int non_default_colors = 0; | |
2864 | char *bits; | |
2865 | int parsed_p; | |
2866 | int in_memory_file_p = 0; | |
2867 | ||
2868 | /* See if data looks like an in-memory XBM file. */ | |
2869 | data = image_spec_value (img->spec, QCdata, NULL); | |
2870 | in_memory_file_p = xbm_file_p (data); | |
2871 | ||
2872 | /* Parse the image specification. */ | |
72af86bd | 2873 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2874 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
35fa624f | 2875 | (void) parsed_p; |
a54e2c05 | 2876 | eassert (parsed_p); |
4ef0d4d0 KS |
2877 | |
2878 | /* Get specified width, and height. */ | |
2879 | if (!in_memory_file_p) | |
2880 | { | |
2881 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2882 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
a54e2c05 | 2883 | eassert (img->width > 0 && img->height > 0); |
ca4aa935 PE |
2884 | if (!check_image_size (f, img->width, img->height)) |
2885 | { | |
2886 | image_error ("Invalid image size (see `max-image-size')", | |
2887 | Qnil, Qnil); | |
2888 | return 0; | |
2889 | } | |
4ef0d4d0 KS |
2890 | } |
2891 | ||
2892 | /* Get foreground and background colors, maybe allocate colors. */ | |
2893 | if (fmt[XBM_FOREGROUND].count | |
2894 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2895 | { | |
2896 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2897 | foreground); | |
2898 | non_default_colors = 1; | |
2899 | } | |
2900 | ||
2901 | if (fmt[XBM_BACKGROUND].count | |
2902 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2903 | { | |
2904 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2905 | background); | |
2906 | non_default_colors = 1; | |
2907 | } | |
2908 | ||
2909 | if (in_memory_file_p) | |
2910 | success_p = xbm_load_image (f, img, SDATA (data), | |
2911 | (SDATA (data) | |
2912 | + SBYTES (data))); | |
2913 | else | |
2914 | { | |
2915 | if (VECTORP (data)) | |
2916 | { | |
2917 | int i; | |
2918 | char *p; | |
2919 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2920 | ||
38182d90 | 2921 | p = bits = alloca (nbytes * img->height); |
4ef0d4d0 KS |
2922 | for (i = 0; i < img->height; ++i, p += nbytes) |
2923 | { | |
28be1ada | 2924 | Lisp_Object line = AREF (data, i); |
4ef0d4d0 | 2925 | if (STRINGP (line)) |
72af86bd | 2926 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2927 | else |
72af86bd | 2928 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2929 | } |
2930 | } | |
2931 | else if (STRINGP (data)) | |
42a5b22f | 2932 | bits = SSDATA (data); |
4ef0d4d0 | 2933 | else |
b8dc29e9 | 2934 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2935 | |
44b1dc2e JR |
2936 | #ifdef WINDOWSNT |
2937 | { | |
2938 | char *invertedBits; | |
2939 | int nbytes, i; | |
2940 | /* Windows mono bitmaps are reversed compared with X. */ | |
2941 | invertedBits = bits; | |
285d07e2 | 2942 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2943 | * img->height; |
38182d90 | 2944 | bits = alloca (nbytes); |
44b1dc2e JR |
2945 | for (i = 0; i < nbytes; i++) |
2946 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2947 | } | |
2948 | #endif | |
4ef0d4d0 KS |
2949 | /* Create the pixmap. */ |
2950 | ||
ca4aa935 PE |
2951 | if (x_check_image_size (0, img->width, img->height)) |
2952 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2953 | foreground, background, | |
2954 | non_default_colors); | |
2955 | else | |
2956 | img->pixmap = NO_PIXMAP; | |
2957 | ||
4ef0d4d0 KS |
2958 | if (img->pixmap) |
2959 | success_p = 1; | |
2960 | else | |
2961 | { | |
2962 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2963 | img->spec, Qnil); | |
2964 | x_clear_image (f, img); | |
2965 | } | |
2966 | } | |
2967 | } | |
2968 | ||
2969 | return success_p; | |
2970 | } | |
2971 | ||
2972 | ||
2973 | \f | |
2974 | /*********************************************************************** | |
2975 | XPM images | |
2976 | ***********************************************************************/ | |
2977 | ||
9e2a2647 | 2978 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2979 | |
f57e2426 J |
2980 | static int xpm_image_p (Lisp_Object object); |
2981 | static int xpm_load (struct frame *f, struct image *img); | |
2982 | static int xpm_valid_color_symbols_p (Lisp_Object); | |
4ef0d4d0 | 2983 | |
9e2a2647 | 2984 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
2985 | |
2986 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
2987 | #ifdef HAVE_NTGUI |
2988 | /* Indicate to xpm.h that we don't have Xlib. */ | |
2989 | #define FOR_MSW | |
2990 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 2991 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
2992 | #define XColor xpm_XColor |
2993 | #define XImage xpm_XImage | |
279d3293 | 2994 | #define Display xpm_Display |
4ef0d4d0 KS |
2995 | #define PIXEL_ALREADY_TYPEDEFED |
2996 | #include "X11/xpm.h" | |
2997 | #undef FOR_MSW | |
2998 | #undef XColor | |
2999 | #undef XImage | |
279d3293 | 3000 | #undef Display |
4ef0d4d0 KS |
3001 | #undef PIXEL_ALREADY_TYPEDEFED |
3002 | #else | |
3003 | #include "X11/xpm.h" | |
3004 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3005 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3006 | |
9e2a2647 | 3007 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
3008 | /* The symbol `xpm' identifying XPM-format images. */ |
3009 | ||
955cbe7b | 3010 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
3011 | |
3012 | /* Indices of image specification fields in xpm_format, below. */ | |
3013 | ||
3014 | enum xpm_keyword_index | |
3015 | { | |
3016 | XPM_TYPE, | |
3017 | XPM_FILE, | |
3018 | XPM_DATA, | |
3019 | XPM_ASCENT, | |
3020 | XPM_MARGIN, | |
3021 | XPM_RELIEF, | |
3022 | XPM_ALGORITHM, | |
3023 | XPM_HEURISTIC_MASK, | |
3024 | XPM_MASK, | |
3025 | XPM_COLOR_SYMBOLS, | |
3026 | XPM_BACKGROUND, | |
3027 | XPM_LAST | |
3028 | }; | |
3029 | ||
3030 | /* Vector of image_keyword structures describing the format | |
3031 | of valid XPM image specifications. */ | |
3032 | ||
91433552 | 3033 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
3034 | { |
3035 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3036 | {":file", IMAGE_STRING_VALUE, 0}, | |
3037 | {":data", IMAGE_STRING_VALUE, 0}, | |
3038 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 3039 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
3040 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
3041 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3042 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3043 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3044 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3045 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3046 | }; | |
3047 | ||
3048 | /* Structure describing the image type XPM. */ | |
3049 | ||
3050 | static struct image_type xpm_type = | |
3051 | { | |
3052 | &Qxpm, | |
3053 | xpm_image_p, | |
3054 | xpm_load, | |
3055 | x_clear_image, | |
3056 | NULL | |
3057 | }; | |
3058 | ||
3059 | #ifdef HAVE_X_WINDOWS | |
3060 | ||
3061 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3062 | functions for allocating image colors. Our own functions handle | |
3063 | color allocation failures more gracefully than the ones on the XPM | |
3064 | lib. */ | |
3065 | ||
3066 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3067 | #define ALLOC_XPM_COLORS | |
3068 | #endif | |
3069 | #endif /* HAVE_X_WINDOWS */ | |
3070 | ||
3071 | #ifdef ALLOC_XPM_COLORS | |
3072 | ||
f57e2426 J |
3073 | static void xpm_init_color_cache (struct frame *, XpmAttributes *); |
3074 | static void xpm_free_color_cache (void); | |
3075 | static int xpm_lookup_color (struct frame *, char *, XColor *); | |
3076 | static int xpm_color_bucket (char *); | |
3077 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, | |
3078 | XColor *, int); | |
4ef0d4d0 KS |
3079 | |
3080 | /* An entry in a hash table used to cache color definitions of named | |
3081 | colors. This cache is necessary to speed up XPM image loading in | |
3082 | case we do color allocations ourselves. Without it, we would need | |
3083 | a call to XParseColor per pixel in the image. */ | |
3084 | ||
3085 | struct xpm_cached_color | |
3086 | { | |
3087 | /* Next in collision chain. */ | |
3088 | struct xpm_cached_color *next; | |
3089 | ||
3090 | /* Color definition (RGB and pixel color). */ | |
3091 | XColor color; | |
3092 | ||
3093 | /* Color name. */ | |
3094 | char name[1]; | |
3095 | }; | |
3096 | ||
3097 | /* The hash table used for the color cache, and its bucket vector | |
3098 | size. */ | |
3099 | ||
3100 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3101 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3102 | |
3103 | /* Initialize the color cache. */ | |
3104 | ||
3105 | static void | |
d3da34e0 | 3106 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3107 | { |
3108 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
23f86fce | 3109 | xpm_color_cache = xzalloc (nbytes); |
4ef0d4d0 KS |
3110 | init_color_table (); |
3111 | ||
3112 | if (attrs->valuemask & XpmColorSymbols) | |
3113 | { | |
3114 | int i; | |
3115 | XColor color; | |
3116 | ||
3117 | for (i = 0; i < attrs->numsymbols; ++i) | |
3118 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3119 | attrs->colorsymbols[i].value, &color)) | |
3120 | { | |
3121 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3122 | color.blue); | |
3123 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3124 | } | |
3125 | } | |
3126 | } | |
3127 | ||
3128 | /* Free the color cache. */ | |
3129 | ||
3130 | static void | |
d3da34e0 | 3131 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3132 | { |
3133 | struct xpm_cached_color *p, *next; | |
3134 | int i; | |
3135 | ||
3136 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3137 | for (p = xpm_color_cache[i]; p; p = next) | |
3138 | { | |
3139 | next = p->next; | |
3140 | xfree (p); | |
3141 | } | |
3142 | ||
3143 | xfree (xpm_color_cache); | |
3144 | xpm_color_cache = NULL; | |
3145 | free_color_table (); | |
3146 | } | |
3147 | ||
3148 | /* Return the bucket index for color named COLOR_NAME in the color | |
3149 | cache. */ | |
3150 | ||
3151 | static int | |
d3da34e0 | 3152 | xpm_color_bucket (char *color_name) |
4ef0d4d0 | 3153 | { |
3f791afe PE |
3154 | EMACS_UINT hash = hash_string (color_name, strlen (color_name)); |
3155 | return hash % XPM_COLOR_CACHE_BUCKETS; | |
4ef0d4d0 KS |
3156 | } |
3157 | ||
3158 | ||
3159 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3160 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3161 | entry added. */ | |
3162 | ||
3163 | static struct xpm_cached_color * | |
d3da34e0 | 3164 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3165 | { |
3166 | size_t nbytes; | |
3167 | struct xpm_cached_color *p; | |
3168 | ||
3169 | if (bucket < 0) | |
3170 | bucket = xpm_color_bucket (color_name); | |
3171 | ||
3f791afe | 3172 | nbytes = offsetof (struct xpm_cached_color, name) + strlen (color_name) + 1; |
23f86fce | 3173 | p = xmalloc (nbytes); |
4ef0d4d0 KS |
3174 | strcpy (p->name, color_name); |
3175 | p->color = *color; | |
3176 | p->next = xpm_color_cache[bucket]; | |
3177 | xpm_color_cache[bucket] = p; | |
3178 | return p; | |
3179 | } | |
3180 | ||
3181 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3182 | return the cached definition in *COLOR. Otherwise, make a new | |
3183 | entry in the cache and allocate the color. Value is zero if color | |
3184 | allocation failed. */ | |
3185 | ||
3186 | static int | |
d3da34e0 | 3187 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3188 | { |
3189 | struct xpm_cached_color *p; | |
3190 | int h = xpm_color_bucket (color_name); | |
3191 | ||
3192 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3193 | if (strcmp (p->name, color_name) == 0) | |
3194 | break; | |
3195 | ||
3196 | if (p != NULL) | |
3197 | *color = p->color; | |
3198 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3199 | color_name, color)) | |
3200 | { | |
3201 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3202 | color->blue); | |
3203 | p = xpm_cache_color (f, color_name, color, h); | |
3204 | } | |
3205 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3206 | with transparency, and it's useful. */ | |
3207 | else if (strcmp ("opaque", color_name) == 0) | |
3208 | { | |
72af86bd | 3209 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3210 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3211 | p = xpm_cache_color (f, color_name, color, h); | |
3212 | } | |
3213 | ||
3214 | return p != NULL; | |
3215 | } | |
3216 | ||
3217 | ||
3218 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3219 | CLOSURE is a pointer to the frame on which we allocate the | |
3220 | color. Return in *COLOR the allocated color. Value is non-zero | |
3221 | if successful. */ | |
3222 | ||
3223 | static int | |
d3da34e0 JB |
3224 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3225 | void *closure) | |
4ef0d4d0 KS |
3226 | { |
3227 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3228 | } | |
3229 | ||
3230 | ||
3231 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3232 | is a pointer to the frame on which we allocate the color. Value is | |
3233 | non-zero if successful. */ | |
3234 | ||
3235 | static int | |
d3da34e0 | 3236 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3237 | { |
3238 | return 1; | |
3239 | } | |
3240 | ||
3241 | #endif /* ALLOC_XPM_COLORS */ | |
3242 | ||
3243 | ||
3244 | #ifdef HAVE_NTGUI | |
3245 | ||
3246 | /* XPM library details. */ | |
3247 | ||
14beddf4 CY |
3248 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3249 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3250 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3251 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3252 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3253 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3254 | |
4ef0d4d0 | 3255 | static int |
0855eb52 | 3256 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3257 | { |
3258 | HMODULE library; | |
3259 | ||
0855eb52 | 3260 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3261 | return 0; |
3262 | ||
3263 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3264 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3265 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3266 | LOAD_IMGLIB_FN (library, XImageFree); | |
3267 | return 1; | |
3268 | } | |
3269 | ||
3270 | #endif /* HAVE_NTGUI */ | |
3271 | ||
3272 | ||
3273 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3274 | for XPM images. Such a list must consist of conses whose car and | |
3275 | cdr are strings. */ | |
3276 | ||
3277 | static int | |
d3da34e0 | 3278 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3279 | { |
3280 | while (CONSP (color_symbols)) | |
3281 | { | |
3282 | Lisp_Object sym = XCAR (color_symbols); | |
3283 | if (!CONSP (sym) | |
3284 | || !STRINGP (XCAR (sym)) | |
3285 | || !STRINGP (XCDR (sym))) | |
3286 | break; | |
3287 | color_symbols = XCDR (color_symbols); | |
3288 | } | |
3289 | ||
3290 | return NILP (color_symbols); | |
3291 | } | |
3292 | ||
3293 | ||
3294 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3295 | ||
3296 | static int | |
d3da34e0 | 3297 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3298 | { |
3299 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3300 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3301 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3302 | /* Either `:file' or `:data' must be present. */ | |
3303 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3304 | /* Either no `:color-symbols' or it's a list of conses | |
3305 | whose car and cdr are strings. */ | |
3306 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3307 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3308 | } | |
3309 | ||
9e2a2647 | 3310 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3311 | |
cd44d2eb | 3312 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
0766b489 | 3313 | ptrdiff_t |
ef1b0ba7 | 3314 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3315 | { |
3316 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 PE |
3317 | ptrdiff_t id; |
3318 | int rc; | |
786a43d6 CY |
3319 | XpmAttributes attrs; |
3320 | Pixmap bitmap, mask; | |
3321 | ||
72af86bd | 3322 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3323 | |
54188d8f CY |
3324 | attrs.visual = FRAME_X_VISUAL (f); |
3325 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3326 | attrs.valuemask |= XpmVisual; | |
3327 | attrs.valuemask |= XpmColormap; | |
3328 | ||
786a43d6 | 3329 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3330 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3331 | if (rc != XpmSuccess) |
fe45ad15 CY |
3332 | { |
3333 | XpmFreeAttributes (&attrs); | |
3334 | return -1; | |
3335 | } | |
786a43d6 CY |
3336 | |
3337 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3338 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3339 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3340 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3341 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3342 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3343 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3344 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3345 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3346 | ||
3347 | XpmFreeAttributes (&attrs); | |
3348 | return id; | |
3349 | } | |
0d876a14 | 3350 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3351 | |
4ef0d4d0 KS |
3352 | /* Load image IMG which will be displayed on frame F. Value is |
3353 | non-zero if successful. */ | |
3354 | ||
ea1aaa6f ST |
3355 | #ifdef HAVE_XPM |
3356 | ||
4ef0d4d0 | 3357 | static int |
d3da34e0 | 3358 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3359 | { |
3360 | int rc; | |
3361 | XpmAttributes attrs; | |
3362 | Lisp_Object specified_file, color_symbols; | |
3363 | #ifdef HAVE_NTGUI | |
3364 | HDC hdc; | |
3365 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3366 | #endif /* HAVE_NTGUI */ | |
3367 | ||
3368 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3369 | close colors. Return colors allocated. */ | |
72af86bd | 3370 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3371 | |
3372 | #ifndef HAVE_NTGUI | |
3373 | attrs.visual = FRAME_X_VISUAL (f); | |
3374 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3375 | attrs.valuemask |= XpmVisual; | |
3376 | attrs.valuemask |= XpmColormap; | |
3377 | #endif /* HAVE_NTGUI */ | |
3378 | ||
3379 | #ifdef ALLOC_XPM_COLORS | |
3380 | /* Allocate colors with our own functions which handle | |
3381 | failing color allocation more gracefully. */ | |
3382 | attrs.color_closure = f; | |
3383 | attrs.alloc_color = xpm_alloc_color; | |
3384 | attrs.free_colors = xpm_free_colors; | |
3385 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3386 | #else /* not ALLOC_XPM_COLORS */ | |
3387 | /* Let the XPM lib allocate colors. */ | |
3388 | attrs.valuemask |= XpmReturnAllocPixels; | |
3389 | #ifdef XpmAllocCloseColors | |
3390 | attrs.alloc_close_colors = 1; | |
3391 | attrs.valuemask |= XpmAllocCloseColors; | |
3392 | #else /* not XpmAllocCloseColors */ | |
3393 | attrs.closeness = 600; | |
3394 | attrs.valuemask |= XpmCloseness; | |
3395 | #endif /* not XpmAllocCloseColors */ | |
3396 | #endif /* ALLOC_XPM_COLORS */ | |
3397 | ||
3398 | /* If image specification contains symbolic color definitions, add | |
3399 | these to `attrs'. */ | |
3400 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3401 | if (CONSP (color_symbols)) | |
3402 | { | |
3403 | Lisp_Object tail; | |
3404 | XpmColorSymbol *xpm_syms; | |
3405 | int i, size; | |
3406 | ||
3407 | attrs.valuemask |= XpmColorSymbols; | |
3408 | ||
3409 | /* Count number of symbols. */ | |
3410 | attrs.numsymbols = 0; | |
3411 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3412 | ++attrs.numsymbols; | |
3413 | ||
3414 | /* Allocate an XpmColorSymbol array. */ | |
3415 | size = attrs.numsymbols * sizeof *xpm_syms; | |
38182d90 | 3416 | xpm_syms = alloca (size); |
72af86bd | 3417 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3418 | attrs.colorsymbols = xpm_syms; |
3419 | ||
3420 | /* Fill the color symbol array. */ | |
3421 | for (tail = color_symbols, i = 0; | |
3422 | CONSP (tail); | |
3423 | ++i, tail = XCDR (tail)) | |
3424 | { | |
7574650a AS |
3425 | Lisp_Object name; |
3426 | Lisp_Object color; | |
e22cffbc | 3427 | char *empty_string = (char *) ""; |
7574650a AS |
3428 | |
3429 | if (!CONSP (XCAR (tail))) | |
3430 | { | |
e22cffbc PE |
3431 | xpm_syms[i].name = empty_string; |
3432 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3433 | continue; |
3434 | } | |
3435 | name = XCAR (XCAR (tail)); | |
3436 | color = XCDR (XCAR (tail)); | |
3437 | if (STRINGP (name)) | |
3438 | { | |
38182d90 | 3439 | xpm_syms[i].name = alloca (SCHARS (name) + 1); |
42a5b22f | 3440 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3441 | } |
3442 | else | |
e22cffbc | 3443 | xpm_syms[i].name = empty_string; |
7574650a AS |
3444 | if (STRINGP (color)) |
3445 | { | |
38182d90 | 3446 | xpm_syms[i].value = alloca (SCHARS (color) + 1); |
42a5b22f | 3447 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3448 | } |
3449 | else | |
e22cffbc | 3450 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3451 | } |
3452 | } | |
3453 | ||
3454 | /* Create a pixmap for the image, either from a file, or from a | |
3455 | string buffer containing data in the same format as an XPM file. */ | |
3456 | #ifdef ALLOC_XPM_COLORS | |
3457 | xpm_init_color_cache (f, &attrs); | |
3458 | #endif | |
3459 | ||
3460 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3461 | ||
3462 | #ifdef HAVE_NTGUI | |
3463 | { | |
3464 | HDC frame_dc = get_frame_dc (f); | |
3465 | hdc = CreateCompatibleDC (frame_dc); | |
3466 | release_frame_dc (f, frame_dc); | |
3467 | } | |
3468 | #endif /* HAVE_NTGUI */ | |
3469 | ||
3470 | if (STRINGP (specified_file)) | |
3471 | { | |
3472 | Lisp_Object file = x_find_image_file (specified_file); | |
3473 | if (!STRINGP (file)) | |
3474 | { | |
3475 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3476 | #ifdef ALLOC_XPM_COLORS |
3477 | xpm_free_color_cache (); | |
3478 | #endif | |
4ef0d4d0 KS |
3479 | return 0; |
3480 | } | |
3481 | ||
3482 | #ifdef HAVE_NTGUI | |
3483 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3484 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3485 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3486 | &xpm_image, &xpm_mask, | |
3487 | &attrs); | |
3488 | #else | |
3489 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3490 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3491 | &attrs); |
3492 | #endif /* HAVE_NTGUI */ | |
3493 | } | |
3494 | else | |
3495 | { | |
3496 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3497 | if (!STRINGP (buffer)) |
3498 | { | |
3499 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3500 | #ifdef ALLOC_XPM_COLORS | |
3501 | xpm_free_color_cache (); | |
3502 | #endif | |
3503 | return 0; | |
3504 | } | |
4ef0d4d0 KS |
3505 | #ifdef HAVE_NTGUI |
3506 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3507 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3508 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3509 | &xpm_image, &xpm_mask, | |
3510 | &attrs); | |
3511 | #else | |
3512 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3513 | SSDATA (buffer), |
4ef0d4d0 KS |
3514 | &img->pixmap, &img->mask, |
3515 | &attrs); | |
3516 | #endif /* HAVE_NTGUI */ | |
3517 | } | |
3518 | ||
3519 | if (rc == XpmSuccess) | |
3520 | { | |
3521 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3522 | img->colors = colors_in_color_table (&img->ncolors); | |
3523 | #else /* not ALLOC_XPM_COLORS */ | |
3524 | int i; | |
3525 | ||
3526 | #ifdef HAVE_NTGUI | |
3527 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3528 | plus some duplicate attributes. */ | |
3529 | if (xpm_image && xpm_image->bitmap) | |
3530 | { | |
3531 | img->pixmap = xpm_image->bitmap; | |
3532 | /* XImageFree in libXpm frees XImage struct without destroying | |
3533 | the bitmap, which is what we want. */ | |
3534 | fn_XImageFree (xpm_image); | |
3535 | } | |
3536 | if (xpm_mask && xpm_mask->bitmap) | |
3537 | { | |
3538 | /* The mask appears to be inverted compared with what we expect. | |
3539 | TODO: invert our expectations. See other places where we | |
3540 | have to invert bits because our idea of masks is backwards. */ | |
3541 | HGDIOBJ old_obj; | |
3542 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3543 | ||
3544 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3545 | SelectObject (hdc, old_obj); | |
3546 | ||
3547 | img->mask = xpm_mask->bitmap; | |
3548 | fn_XImageFree (xpm_mask); | |
3549 | DeleteDC (hdc); | |
3550 | } | |
3551 | ||
3552 | DeleteDC (hdc); | |
3553 | #endif /* HAVE_NTGUI */ | |
3554 | ||
3555 | /* Remember allocated colors. */ | |
0065d054 | 3556 | img->colors = xnmalloc (attrs.nalloc_pixels, sizeof *img->colors); |
ddff3151 | 3557 | img->ncolors = attrs.nalloc_pixels; |
4ef0d4d0 KS |
3558 | for (i = 0; i < attrs.nalloc_pixels; ++i) |
3559 | { | |
3560 | img->colors[i] = attrs.alloc_pixels[i]; | |
3561 | #ifdef DEBUG_X_COLORS | |
3562 | register_color (img->colors[i]); | |
3563 | #endif | |
3564 | } | |
3565 | #endif /* not ALLOC_XPM_COLORS */ | |
3566 | ||
3567 | img->width = attrs.width; | |
3568 | img->height = attrs.height; | |
a54e2c05 | 3569 | eassert (img->width > 0 && img->height > 0); |
4ef0d4d0 KS |
3570 | |
3571 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3572 | #ifdef HAVE_NTGUI | |
3573 | fn_XpmFreeAttributes (&attrs); | |
3574 | #else | |
3575 | XpmFreeAttributes (&attrs); | |
3576 | #endif /* HAVE_NTGUI */ | |
3577 | } | |
3578 | else | |
3579 | { | |
3580 | #ifdef HAVE_NTGUI | |
3581 | DeleteDC (hdc); | |
3582 | #endif /* HAVE_NTGUI */ | |
3583 | ||
3584 | switch (rc) | |
3585 | { | |
3586 | case XpmOpenFailed: | |
3587 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3588 | break; | |
3589 | ||
3590 | case XpmFileInvalid: | |
3591 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3592 | break; | |
3593 | ||
3594 | case XpmNoMemory: | |
3595 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3596 | break; | |
3597 | ||
3598 | case XpmColorFailed: | |
3599 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3600 | break; | |
3601 | ||
3602 | default: | |
3603 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3604 | break; | |
3605 | } | |
3606 | } | |
3607 | ||
3608 | #ifdef ALLOC_XPM_COLORS | |
3609 | xpm_free_color_cache (); | |
3610 | #endif | |
3611 | return rc == XpmSuccess; | |
3612 | } | |
3613 | ||
3614 | #endif /* HAVE_XPM */ | |
3615 | ||
9e2a2647 | 3616 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3617 | |
9e2a2647 | 3618 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3619 | Only XPM version 3 (without any extensions) is supported. */ |
3620 | ||
f57e2426 J |
3621 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, |
3622 | int, Lisp_Object); | |
3623 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3624 | const unsigned char *, int); | |
f57e2426 J |
3625 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, |
3626 | int, Lisp_Object); | |
3627 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3628 | const unsigned char *, int); | |
ea1aaa6f ST |
3629 | |
3630 | /* Tokens returned from xpm_scan. */ | |
3631 | ||
3632 | enum xpm_token | |
3633 | { | |
3634 | XPM_TK_IDENT = 256, | |
3635 | XPM_TK_STRING, | |
3636 | XPM_TK_EOF | |
3637 | }; | |
3638 | ||
3639 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3640 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3641 | the end (exclusive) addresses of the data, respectively. Advance | |
3642 | *S while scanning. If token is either XPM_TK_IDENT or | |
3643 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3644 | length of the corresponding token, respectively. */ | |
3645 | ||
3646 | static int | |
3d608a86 J |
3647 | xpm_scan (const unsigned char **s, |
3648 | const unsigned char *end, | |
3649 | const unsigned char **beg, | |
74ca2eb3 | 3650 | ptrdiff_t *len) |
ea1aaa6f ST |
3651 | { |
3652 | int c; | |
3653 | ||
3654 | while (*s < end) | |
3655 | { | |
3656 | /* Skip white-space. */ | |
620f13b0 | 3657 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
9ecf6403 | 3658 | ; |
ea1aaa6f ST |
3659 | |
3660 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3661 | sb-dir-plus.xpm uses '+' in its identifier. */ |
620f13b0 | 3662 | if (c_isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3663 | { |
3664 | *beg = *s - 1; | |
2ff0845e | 3665 | while (*s < end |
620f13b0 PE |
3666 | && (c = **s, c_isalnum (c) |
3667 | || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3668 | ++*s; |
3669 | *len = *s - *beg; | |
3670 | return XPM_TK_IDENT; | |
3671 | } | |
ea1aaa6f | 3672 | else if (c == '"') |
9ecf6403 YM |
3673 | { |
3674 | *beg = *s; | |
3675 | while (*s < end && **s != '"') | |
3676 | ++*s; | |
3677 | *len = *s - *beg; | |
3678 | if (*s < end) | |
3679 | ++*s; | |
3680 | return XPM_TK_STRING; | |
3681 | } | |
ea1aaa6f | 3682 | else if (c == '/') |
9ecf6403 YM |
3683 | { |
3684 | if (*s < end && **s == '*') | |
3685 | { | |
3686 | /* C-style comment. */ | |
3687 | ++*s; | |
3688 | do | |
3689 | { | |
3690 | while (*s < end && *(*s)++ != '*') | |
3691 | ; | |
3692 | } | |
3693 | while (*s < end && **s != '/'); | |
3694 | if (*s < end) | |
3695 | ++*s; | |
3696 | } | |
3697 | else | |
3698 | return c; | |
3699 | } | |
ea1aaa6f | 3700 | else |
9ecf6403 | 3701 | return c; |
ea1aaa6f ST |
3702 | } |
3703 | ||
3704 | return XPM_TK_EOF; | |
3705 | } | |
3706 | ||
bbe6f2aa | 3707 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3708 | specifying the color of each pixel in XPM data. A value is either |
3709 | an integer that specifies a pixel color, Qt that specifies | |
3710 | transparency, or Qnil for the unspecified color. If the length of | |
3711 | the key string is one, a vector is used as a table. Otherwise, a | |
3712 | hash table is used. */ | |
3713 | ||
3714 | static Lisp_Object | |
3d608a86 J |
3715 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3716 | const unsigned char *, | |
3717 | int, | |
3718 | Lisp_Object), | |
3719 | Lisp_Object (**get_func) (Lisp_Object, | |
3720 | const unsigned char *, | |
3721 | int)) | |
ea1aaa6f ST |
3722 | { |
3723 | *put_func = xpm_put_color_table_v; | |
3724 | *get_func = xpm_get_color_table_v; | |
3725 | return Fmake_vector (make_number (256), Qnil); | |
3726 | } | |
3727 | ||
3728 | static void | |
3d608a86 J |
3729 | xpm_put_color_table_v (Lisp_Object color_table, |
3730 | const unsigned char *chars_start, | |
3731 | int chars_len, | |
3732 | Lisp_Object color) | |
ea1aaa6f | 3733 | { |
28be1ada | 3734 | ASET (color_table, *chars_start, color); |
ea1aaa6f ST |
3735 | } |
3736 | ||
3737 | static Lisp_Object | |
3d608a86 J |
3738 | xpm_get_color_table_v (Lisp_Object color_table, |
3739 | const unsigned char *chars_start, | |
3740 | int chars_len) | |
ea1aaa6f | 3741 | { |
28be1ada | 3742 | return AREF (color_table, *chars_start); |
ea1aaa6f ST |
3743 | } |
3744 | ||
3745 | static Lisp_Object | |
3d608a86 J |
3746 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3747 | const unsigned char *, | |
3748 | int, | |
3749 | Lisp_Object), | |
3750 | Lisp_Object (**get_func) (Lisp_Object, | |
3751 | const unsigned char *, | |
3752 | int)) | |
ea1aaa6f ST |
3753 | { |
3754 | *put_func = xpm_put_color_table_h; | |
3755 | *get_func = xpm_get_color_table_h; | |
3756 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
3757 | make_float (DEFAULT_REHASH_SIZE), |
3758 | make_float (DEFAULT_REHASH_THRESHOLD), | |
3759 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
3760 | } |
3761 | ||
3762 | static void | |
3d608a86 J |
3763 | xpm_put_color_table_h (Lisp_Object color_table, |
3764 | const unsigned char *chars_start, | |
3765 | int chars_len, | |
3766 | Lisp_Object color) | |
ea1aaa6f ST |
3767 | { |
3768 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3769 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3770 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3771 | ||
3772 | hash_lookup (table, chars, &hash_code); | |
3773 | hash_put (table, chars, color, hash_code); | |
3774 | } | |
3775 | ||
3776 | static Lisp_Object | |
3d608a86 J |
3777 | xpm_get_color_table_h (Lisp_Object color_table, |
3778 | const unsigned char *chars_start, | |
3779 | int chars_len) | |
ea1aaa6f ST |
3780 | { |
3781 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
d3411f89 PE |
3782 | ptrdiff_t i = |
3783 | hash_lookup (table, make_unibyte_string (chars_start, chars_len), NULL); | |
ea1aaa6f ST |
3784 | |
3785 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3786 | } | |
3787 | ||
3788 | enum xpm_color_key { | |
3789 | XPM_COLOR_KEY_S, | |
3790 | XPM_COLOR_KEY_M, | |
3791 | XPM_COLOR_KEY_G4, | |
3792 | XPM_COLOR_KEY_G, | |
3793 | XPM_COLOR_KEY_C | |
3794 | }; | |
3795 | ||
46accb8f | 3796 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3797 | |
3798 | static int | |
3d608a86 | 3799 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3800 | { |
3801 | int i; | |
3802 | ||
3803 | for (i = 0; | |
3804 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3805 | i++) | |
3806 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3807 | return i; | |
3808 | return -1; | |
3809 | } | |
3810 | ||
3811 | static int | |
3d608a86 J |
3812 | xpm_load_image (struct frame *f, |
3813 | struct image *img, | |
3814 | const unsigned char *contents, | |
3815 | const unsigned char *end) | |
ea1aaa6f | 3816 | { |
46accb8f | 3817 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3818 | unsigned char buffer[BUFSIZ]; |
3819 | int width, height, x, y; | |
3820 | int num_colors, chars_per_pixel; | |
74ca2eb3 PE |
3821 | ptrdiff_t len; |
3822 | int LA1; | |
46accb8f YM |
3823 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3824 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
3825 | Lisp_Object frame, color_symbols, color_table; |
3826 | int best_key, have_mask = 0; | |
3827 | XImagePtr ximg = NULL, mask_img = NULL; | |
3828 | ||
3829 | #define match() \ | |
3830 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3831 | ||
9ecf6403 YM |
3832 | #define expect(TOKEN) \ |
3833 | if (LA1 != (TOKEN)) \ | |
3834 | goto failure; \ | |
3835 | else \ | |
ea1aaa6f ST |
3836 | match () |
3837 | ||
9ecf6403 | 3838 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3839 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3840 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3841 | match (); \ | |
3842 | else \ | |
ea1aaa6f ST |
3843 | goto failure |
3844 | ||
3845 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3846 | goto failure; | |
3847 | s += 9; | |
ed3751c8 | 3848 | match (); |
ea1aaa6f ST |
3849 | expect_ident ("static"); |
3850 | expect_ident ("char"); | |
3851 | expect ('*'); | |
3852 | expect (XPM_TK_IDENT); | |
3853 | expect ('['); | |
3854 | expect (']'); | |
3855 | expect ('='); | |
3856 | expect ('{'); | |
3857 | expect (XPM_TK_STRING); | |
3858 | if (len >= BUFSIZ) | |
3859 | goto failure; | |
3860 | memcpy (buffer, beg, len); | |
3861 | buffer[len] = '\0'; | |
3862 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3863 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3864 | || width <= 0 || height <= 0 |
3865 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3866 | goto failure; | |
de297941 YM |
3867 | |
3868 | if (!check_image_size (f, width, height)) | |
3869 | { | |
10ea2b82 | 3870 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3871 | goto failure; |
3872 | } | |
3873 | ||
ca4aa935 PE |
3874 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
3875 | &ximg, &img->pixmap) | |
3876 | #ifndef HAVE_NS | |
3877 | || !x_create_x_image_and_pixmap (f, width, height, 1, | |
3878 | &mask_img, &img->mask) | |
3879 | #endif | |
3880 | ) | |
3881 | { | |
3882 | image_error ("Image too large", Qnil, Qnil); | |
3883 | goto failure; | |
3884 | } | |
3885 | ||
ea1aaa6f ST |
3886 | expect (','); |
3887 | ||
3888 | XSETFRAME (frame, f); | |
3889 | if (!NILP (Fxw_display_color_p (frame))) | |
3890 | best_key = XPM_COLOR_KEY_C; | |
3891 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3892 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3893 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3894 | else |
3895 | best_key = XPM_COLOR_KEY_M; | |
3896 | ||
3897 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3898 | if (chars_per_pixel == 1) | |
3899 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3900 | &get_color_table); |
ea1aaa6f ST |
3901 | else |
3902 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3903 | &get_color_table); |
ea1aaa6f ST |
3904 | |
3905 | while (num_colors-- > 0) | |
3906 | { | |
25a48bd0 | 3907 | char *color, *max_color; |
ea1aaa6f ST |
3908 | int key, next_key, max_key = 0; |
3909 | Lisp_Object symbol_color = Qnil, color_val; | |
3910 | XColor cdef; | |
3911 | ||
3912 | expect (XPM_TK_STRING); | |
3913 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3914 | goto failure; |
ea1aaa6f ST |
3915 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3916 | buffer[len - chars_per_pixel] = '\0'; | |
3917 | ||
3918 | str = strtok (buffer, " \t"); | |
3919 | if (str == NULL) | |
9ecf6403 | 3920 | goto failure; |
ea1aaa6f ST |
3921 | key = xpm_str_to_color_key (str); |
3922 | if (key < 0) | |
9ecf6403 | 3923 | goto failure; |
ea1aaa6f | 3924 | do |
9ecf6403 YM |
3925 | { |
3926 | color = strtok (NULL, " \t"); | |
3927 | if (color == NULL) | |
3928 | goto failure; | |
ea1aaa6f | 3929 | |
9db94f82 | 3930 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3931 | { |
3932 | next_key = xpm_str_to_color_key (str); | |
3933 | if (next_key >= 0) | |
3934 | break; | |
3935 | color[strlen (color)] = ' '; | |
3936 | } | |
ea1aaa6f | 3937 | |
9ecf6403 YM |
3938 | if (key == XPM_COLOR_KEY_S) |
3939 | { | |
3940 | if (NILP (symbol_color)) | |
3941 | symbol_color = build_string (color); | |
3942 | } | |
3943 | else if (max_key < key && key <= best_key) | |
3944 | { | |
3945 | max_key = key; | |
3946 | max_color = color; | |
3947 | } | |
3948 | key = next_key; | |
3949 | } | |
ea1aaa6f ST |
3950 | while (str); |
3951 | ||
3952 | color_val = Qnil; | |
3953 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3954 | { |
3955 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3956 | ||
3957 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3958 | { |
25a48bd0 | 3959 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 | 3960 | color_val = Qt; |
6045c4fd | 3961 | else if (x_defined_color (f, SSDATA (XCDR (specified_color)), |
9db94f82 YM |
3962 | &cdef, 0)) |
3963 | color_val = make_number (cdef.pixel); | |
3964 | } | |
9ecf6403 | 3965 | } |
ea1aaa6f | 3966 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3967 | { |
05131107 | 3968 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3969 | color_val = Qt; |
3970 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3971 | color_val = make_number (cdef.pixel); | |
3972 | } | |
ea1aaa6f | 3973 | if (!NILP (color_val)) |
9ecf6403 | 3974 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3975 | |
3976 | expect (','); | |
3977 | } | |
3978 | ||
ea1aaa6f ST |
3979 | for (y = 0; y < height; y++) |
3980 | { | |
3981 | expect (XPM_TK_STRING); | |
3982 | str = beg; | |
3983 | if (len < width * chars_per_pixel) | |
9ecf6403 | 3984 | goto failure; |
ea1aaa6f | 3985 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
3986 | { |
3987 | Lisp_Object color_val = | |
3988 | (*get_color_table) (color_table, str, chars_per_pixel); | |
3989 | ||
3990 | XPutPixel (ximg, x, y, | |
3991 | (INTEGERP (color_val) ? XINT (color_val) | |
3992 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 3993 | #ifndef HAVE_NS |
9ecf6403 YM |
3994 | XPutPixel (mask_img, x, y, |
3995 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
3996 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 3997 | #else |
ed3751c8 JB |
3998 | if (EQ (color_val, Qt)) |
3999 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 4000 | #endif |
9ecf6403 | 4001 | } |
ea1aaa6f | 4002 | if (y + 1 < height) |
9ecf6403 | 4003 | expect (','); |
ea1aaa6f ST |
4004 | } |
4005 | ||
4006 | img->width = width; | |
4007 | img->height = height; | |
4008 | ||
0b8ac842 YM |
4009 | /* Maybe fill in the background field while we have ximg handy. */ |
4010 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4011 | IMAGE_BACKGROUND (img, f, ximg); | |
4012 | ||
ea1aaa6f ST |
4013 | x_put_x_image (f, ximg, img->pixmap, width, height); |
4014 | x_destroy_x_image (ximg); | |
edfda783 | 4015 | #ifndef HAVE_NS |
ea1aaa6f ST |
4016 | if (have_mask) |
4017 | { | |
9ecf6403 YM |
4018 | /* Fill in the background_transparent field while we have the |
4019 | mask handy. */ | |
4020 | image_background_transparent (img, f, mask_img); | |
4021 | ||
ea1aaa6f ST |
4022 | x_put_x_image (f, mask_img, img->mask, width, height); |
4023 | x_destroy_x_image (mask_img); | |
4024 | } | |
4025 | else | |
4026 | { | |
4027 | x_destroy_x_image (mask_img); | |
4028 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4029 | img->mask = NO_PIXMAP; | |
4030 | } | |
edfda783 | 4031 | #endif |
ea1aaa6f ST |
4032 | return 1; |
4033 | ||
4034 | failure: | |
4035 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
ea1aaa6f ST |
4036 | x_destroy_x_image (ximg); |
4037 | x_destroy_x_image (mask_img); | |
4038 | x_clear_image (f, img); | |
4039 | return 0; | |
4040 | ||
4041 | #undef match | |
4042 | #undef expect | |
4043 | #undef expect_ident | |
4044 | } | |
4045 | ||
4046 | static int | |
3d608a86 J |
4047 | xpm_load (struct frame *f, |
4048 | struct image *img) | |
ea1aaa6f ST |
4049 | { |
4050 | int success_p = 0; | |
4051 | Lisp_Object file_name; | |
4052 | ||
4053 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4054 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4055 | if (STRINGP (file_name)) | |
4056 | { | |
4057 | Lisp_Object file; | |
4058 | unsigned char *contents; | |
dd52fcea | 4059 | ptrdiff_t size; |
ea1aaa6f ST |
4060 | |
4061 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4062 | if (!STRINGP (file)) |
9ecf6403 YM |
4063 | { |
4064 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4065 | return 0; |
4066 | } | |
ea1aaa6f | 4067 | |
6045c4fd | 4068 | contents = slurp_file (SSDATA (file), &size); |
ea1aaa6f | 4069 | if (contents == NULL) |
9ecf6403 YM |
4070 | { |
4071 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4072 | return 0; |
4073 | } | |
ea1aaa6f ST |
4074 | |
4075 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4076 | xfree (contents); | |
ea1aaa6f ST |
4077 | } |
4078 | else | |
4079 | { | |
4080 | Lisp_Object data; | |
4081 | ||
4082 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4083 | if (!STRINGP (data)) |
4084 | { | |
4085 | image_error ("Invalid image data `%s'", data, Qnil); | |
4086 | return 0; | |
4087 | } | |
ea1aaa6f | 4088 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4089 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4090 | } |
4091 | ||
4092 | return success_p; | |
4093 | } | |
4094 | ||
9e2a2647 | 4095 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4096 | |
ea1aaa6f | 4097 | |
4ef0d4d0 KS |
4098 | \f |
4099 | /*********************************************************************** | |
4100 | Color table | |
4101 | ***********************************************************************/ | |
4102 | ||
4103 | #ifdef COLOR_TABLE_SUPPORT | |
4104 | ||
4105 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4106 | ||
4107 | struct ct_color | |
4108 | { | |
4109 | int r, g, b; | |
4110 | unsigned long pixel; | |
4111 | ||
4112 | /* Next in color table collision list. */ | |
4113 | struct ct_color *next; | |
4114 | }; | |
4115 | ||
4116 | /* The bucket vector size to use. Must be prime. */ | |
4117 | ||
4118 | #define CT_SIZE 101 | |
4119 | ||
4120 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4121 | ||
4122 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4123 | ||
4124 | /* The color hash table. */ | |
4125 | ||
cd44d2eb | 4126 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4127 | |
4128 | /* Number of entries in the color table. */ | |
4129 | ||
cd44d2eb | 4130 | static int ct_colors_allocated; |
ddff3151 PE |
4131 | enum |
4132 | { | |
4133 | ct_colors_allocated_max = | |
4134 | min (INT_MAX, | |
4135 | min (PTRDIFF_MAX, SIZE_MAX) / sizeof (unsigned long)) | |
4136 | }; | |
4ef0d4d0 KS |
4137 | |
4138 | /* Initialize the color table. */ | |
4139 | ||
4140 | static void | |
d3da34e0 | 4141 | init_color_table (void) |
4ef0d4d0 KS |
4142 | { |
4143 | int size = CT_SIZE * sizeof (*ct_table); | |
23f86fce | 4144 | ct_table = xzalloc (size); |
4ef0d4d0 KS |
4145 | ct_colors_allocated = 0; |
4146 | } | |
4147 | ||
4148 | ||
4149 | /* Free memory associated with the color table. */ | |
4150 | ||
4151 | static void | |
d3da34e0 | 4152 | free_color_table (void) |
4ef0d4d0 KS |
4153 | { |
4154 | int i; | |
4155 | struct ct_color *p, *next; | |
4156 | ||
4157 | for (i = 0; i < CT_SIZE; ++i) | |
4158 | for (p = ct_table[i]; p; p = next) | |
4159 | { | |
4160 | next = p->next; | |
4161 | xfree (p); | |
4162 | } | |
4163 | ||
4164 | xfree (ct_table); | |
4165 | ct_table = NULL; | |
4166 | } | |
4167 | ||
4168 | ||
4169 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4170 | entry for that color already is in the color table, return the | |
4171 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4172 | G, B, and make an entry in the color table. */ | |
4173 | ||
4174 | static unsigned long | |
d3da34e0 | 4175 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4176 | { |
4177 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4178 | int i = hash % CT_SIZE; | |
4179 | struct ct_color *p; | |
4180 | Display_Info *dpyinfo; | |
4181 | ||
4182 | /* Handle TrueColor visuals specially, which improves performance by | |
4183 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4184 | a nop, and pixel colors specify RGB values directly. See also | |
4185 | the Xlib spec, chapter 3.1. */ | |
4186 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4187 | if (dpyinfo->red_bits > 0) | |
4188 | { | |
4189 | unsigned long pr, pg, pb; | |
4190 | ||
4191 | /* Apply gamma-correction like normal color allocation does. */ | |
4192 | if (f->gamma) | |
4193 | { | |
4194 | XColor color; | |
4195 | color.red = r, color.green = g, color.blue = b; | |
4196 | gamma_correct (f, &color); | |
4197 | r = color.red, g = color.green, b = color.blue; | |
4198 | } | |
4199 | ||
4200 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4201 | them to the right position in the pixel color. Note that the | |
4202 | original RGB values are 16-bit values, as usual in X. */ | |
4203 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4204 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4205 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4206 | ||
4207 | /* Assemble the pixel color. */ | |
4208 | return pr | pg | pb; | |
4209 | } | |
1f026899 | 4210 | |
4ef0d4d0 KS |
4211 | for (p = ct_table[i]; p; p = p->next) |
4212 | if (p->r == r && p->g == g && p->b == b) | |
4213 | break; | |
4214 | ||
4215 | if (p == NULL) | |
4216 | { | |
4217 | ||
4218 | #ifdef HAVE_X_WINDOWS | |
4219 | XColor color; | |
4220 | Colormap cmap; | |
4221 | int rc; | |
ddff3151 PE |
4222 | #else |
4223 | COLORREF color; | |
4224 | #endif | |
4ef0d4d0 | 4225 | |
ddff3151 PE |
4226 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4227 | return FRAME_FOREGROUND_PIXEL (f); | |
4228 | ||
4229 | #ifdef HAVE_X_WINDOWS | |
4ef0d4d0 KS |
4230 | color.red = r; |
4231 | color.green = g; | |
4232 | color.blue = b; | |
4233 | ||
4234 | cmap = FRAME_X_COLORMAP (f); | |
4235 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4236 | if (rc) | |
4237 | { | |
4238 | ++ct_colors_allocated; | |
23f86fce | 4239 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4240 | p->r = r; |
4241 | p->g = g; | |
4242 | p->b = b; | |
4243 | p->pixel = color.pixel; | |
4244 | p->next = ct_table[i]; | |
4245 | ct_table[i] = p; | |
4246 | } | |
4247 | else | |
4248 | return FRAME_FOREGROUND_PIXEL (f); | |
4249 | ||
4250 | #else | |
4ef0d4d0 KS |
4251 | #ifdef HAVE_NTGUI |
4252 | color = PALETTERGB (r, g, b); | |
4253 | #else | |
4254 | color = RGB_TO_ULONG (r, g, b); | |
4255 | #endif /* HAVE_NTGUI */ | |
4256 | ++ct_colors_allocated; | |
23f86fce | 4257 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4258 | p->r = r; |
4259 | p->g = g; | |
4260 | p->b = b; | |
4261 | p->pixel = color; | |
4262 | p->next = ct_table[i]; | |
4263 | ct_table[i] = p; | |
4264 | #endif /* HAVE_X_WINDOWS */ | |
4265 | ||
4266 | } | |
4267 | ||
4268 | return p->pixel; | |
4269 | } | |
4270 | ||
4271 | ||
4272 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4273 | table. If not already present, allocate it. Value is PIXEL. */ | |
4274 | ||
4275 | static unsigned long | |
d3da34e0 | 4276 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4277 | { |
4278 | int i = pixel % CT_SIZE; | |
4279 | struct ct_color *p; | |
4280 | ||
4281 | for (p = ct_table[i]; p; p = p->next) | |
4282 | if (p->pixel == pixel) | |
4283 | break; | |
4284 | ||
4285 | if (p == NULL) | |
4286 | { | |
4287 | XColor color; | |
4288 | Colormap cmap; | |
4289 | int rc; | |
4290 | ||
ddff3151 PE |
4291 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4292 | return FRAME_FOREGROUND_PIXEL (f); | |
4293 | ||
4ef0d4d0 KS |
4294 | #ifdef HAVE_X_WINDOWS |
4295 | cmap = FRAME_X_COLORMAP (f); | |
4296 | color.pixel = pixel; | |
4297 | x_query_color (f, &color); | |
4298 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4299 | #else | |
4300 | BLOCK_INPUT; | |
4301 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4302 | color.pixel = pixel; | |
4303 | XQueryColor (NULL, cmap, &color); | |
4304 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4305 | UNBLOCK_INPUT; | |
4306 | #endif /* HAVE_X_WINDOWS */ | |
4307 | ||
4308 | if (rc) | |
4309 | { | |
4310 | ++ct_colors_allocated; | |
4311 | ||
23f86fce | 4312 | p = xmalloc (sizeof *p); |
4ef0d4d0 KS |
4313 | p->r = color.red; |
4314 | p->g = color.green; | |
4315 | p->b = color.blue; | |
4316 | p->pixel = pixel; | |
4317 | p->next = ct_table[i]; | |
4318 | ct_table[i] = p; | |
4319 | } | |
4320 | else | |
4321 | return FRAME_FOREGROUND_PIXEL (f); | |
4322 | } | |
4323 | return p->pixel; | |
4324 | } | |
4325 | ||
4326 | ||
4327 | /* Value is a vector of all pixel colors contained in the color table, | |
4328 | allocated via xmalloc. Set *N to the number of colors. */ | |
4329 | ||
4330 | static unsigned long * | |
d3da34e0 | 4331 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4332 | { |
4333 | int i, j; | |
4334 | struct ct_color *p; | |
4335 | unsigned long *colors; | |
4336 | ||
4337 | if (ct_colors_allocated == 0) | |
4338 | { | |
4339 | *n = 0; | |
4340 | colors = NULL; | |
4341 | } | |
4342 | else | |
4343 | { | |
23f86fce | 4344 | colors = xmalloc (ct_colors_allocated * sizeof *colors); |
4ef0d4d0 KS |
4345 | *n = ct_colors_allocated; |
4346 | ||
4347 | for (i = j = 0; i < CT_SIZE; ++i) | |
4348 | for (p = ct_table[i]; p; p = p->next) | |
4349 | colors[j++] = p->pixel; | |
4350 | } | |
4351 | ||
4352 | return colors; | |
4353 | } | |
4354 | ||
4355 | #else /* COLOR_TABLE_SUPPORT */ | |
4356 | ||
4357 | static unsigned long | |
7c3320d8 | 4358 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4359 | { |
4360 | unsigned long pixel; | |
4361 | ||
4ef0d4d0 KS |
4362 | #ifdef HAVE_NTGUI |
4363 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4364 | #endif /* HAVE_NTGUI */ | |
4365 | ||
edfda783 AR |
4366 | #ifdef HAVE_NS |
4367 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4368 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4369 | return pixel; |
4370 | } | |
4371 | ||
4372 | static void | |
7c3320d8 | 4373 | init_color_table (void) |
4ef0d4d0 KS |
4374 | { |
4375 | } | |
4376 | #endif /* COLOR_TABLE_SUPPORT */ | |
4377 | ||
4378 | \f | |
4379 | /*********************************************************************** | |
4380 | Algorithms | |
4381 | ***********************************************************************/ | |
4382 | ||
f57e2426 J |
4383 | static XColor *x_to_xcolors (struct frame *, struct image *, int); |
4384 | static void x_from_xcolors (struct frame *, struct image *, XColor *); | |
4385 | static void x_detect_edges (struct frame *, struct image *, int[9], int); | |
4ef0d4d0 KS |
4386 | |
4387 | #ifdef HAVE_NTGUI | |
4388 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4389 | #endif /* HAVE_NTGUI */ | |
4390 | ||
4ef0d4d0 KS |
4391 | /* Edge detection matrices for different edge-detection |
4392 | strategies. */ | |
4393 | ||
4394 | static int emboss_matrix[9] = { | |
4395 | /* x - 1 x x + 1 */ | |
4396 | 2, -1, 0, /* y - 1 */ | |
4397 | -1, 0, 1, /* y */ | |
4398 | 0, 1, -2 /* y + 1 */ | |
4399 | }; | |
4400 | ||
4401 | static int laplace_matrix[9] = { | |
4402 | /* x - 1 x x + 1 */ | |
4403 | 1, 0, 0, /* y - 1 */ | |
4404 | 0, 0, 0, /* y */ | |
4405 | 0, 0, -1 /* y + 1 */ | |
4406 | }; | |
4407 | ||
4408 | /* Value is the intensity of the color whose red/green/blue values | |
4409 | are R, G, and B. */ | |
4410 | ||
4411 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4412 | ||
4413 | ||
4414 | /* On frame F, return an array of XColor structures describing image | |
4415 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4416 | non-zero means also fill the red/green/blue members of the XColor | |
4417 | structures. Value is a pointer to the array of XColors structures, | |
4418 | allocated with xmalloc; it must be freed by the caller. */ | |
4419 | ||
4420 | static XColor * | |
d3da34e0 | 4421 | x_to_xcolors (struct frame *f, struct image *img, int rgb_p) |
4ef0d4d0 KS |
4422 | { |
4423 | int x, y; | |
4424 | XColor *colors, *p; | |
4425 | XImagePtr_or_DC ximg; | |
4426 | #ifdef HAVE_NTGUI | |
4427 | HDC hdc; | |
4428 | HGDIOBJ prev; | |
4429 | #endif /* HAVE_NTGUI */ | |
4430 | ||
ddff3151 PE |
4431 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *colors / img->width < img->height) |
4432 | memory_full (SIZE_MAX); | |
23f86fce | 4433 | colors = xmalloc (sizeof *colors * img->width * img->height); |
4ef0d4d0 KS |
4434 | |
4435 | #ifndef HAVE_NTGUI | |
4436 | /* Get the X image IMG->pixmap. */ | |
4437 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4438 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4439 | #else | |
4440 | /* Load the image into a memory device context. */ | |
4441 | hdc = get_frame_dc (f); | |
4442 | ximg = CreateCompatibleDC (hdc); | |
4443 | release_frame_dc (f, hdc); | |
4444 | prev = SelectObject (ximg, img->pixmap); | |
4445 | #endif /* HAVE_NTGUI */ | |
4446 | ||
4447 | /* Fill the `pixel' members of the XColor array. I wished there | |
4448 | were an easy and portable way to circumvent XGetPixel. */ | |
4449 | p = colors; | |
4450 | for (y = 0; y < img->height; ++y) | |
4451 | { | |
8b7d0a16 | 4452 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
6045c4fd | 4453 | XColor *row = p; |
4ef0d4d0 | 4454 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4455 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4456 | if (rgb_p) |
4457 | x_query_colors (f, row, img->width); | |
4458 | ||
4459 | #else | |
4460 | ||
4461 | for (x = 0; x < img->width; ++x, ++p) | |
4462 | { | |
4463 | /* W32_TODO: palette support needed here? */ | |
4464 | p->pixel = GET_PIXEL (ximg, x, y); | |
4465 | if (rgb_p) | |
4466 | { | |
4ef0d4d0 KS |
4467 | p->red = RED16_FROM_ULONG (p->pixel); |
4468 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4469 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4470 | } |
4471 | } | |
4472 | #endif /* HAVE_X_WINDOWS */ | |
4473 | } | |
4474 | ||
4475 | Destroy_Image (ximg, prev); | |
4476 | ||
4477 | return colors; | |
4478 | } | |
4479 | ||
4480 | #ifdef HAVE_NTGUI | |
4481 | ||
4482 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4483 | created with CreateDIBSection, with the pointer to the bit values | |
4484 | stored in ximg->data. */ | |
4485 | ||
3046a84b | 4486 | static void |
7c3320d8 | 4487 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4488 | { |
4489 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4490 | unsigned char * pixel; |
4491 | ||
4492 | /* True color images. */ | |
4493 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4494 | { | |
4495 | int rowbytes = width * 3; | |
4496 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4497 | if (rowbytes % 4) | |
4498 | rowbytes += 4 - (rowbytes % 4); | |
4499 | ||
4500 | pixel = ximg->data + y * rowbytes + x * 3; | |
4501 | /* Windows bitmaps are in BGR order. */ | |
4502 | *pixel = GetBValue (color); | |
4503 | *(pixel + 1) = GetGValue (color); | |
4504 | *(pixel + 2) = GetRValue (color); | |
4505 | } | |
4506 | /* Monochrome images. */ | |
4507 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4508 | { | |
4509 | int rowbytes = width / 8; | |
4510 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4511 | if (rowbytes % 4) | |
4512 | rowbytes += 4 - (rowbytes % 4); | |
4513 | pixel = ximg->data + y * rowbytes + x / 8; | |
4514 | /* Filter out palette info. */ | |
4515 | if (color & 0x00ffffff) | |
4516 | *pixel = *pixel | (1 << x % 8); | |
4517 | else | |
4518 | *pixel = *pixel & ~(1 << x % 8); | |
4519 | } | |
4520 | else | |
4521 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4522 | } | |
4523 | ||
4524 | #endif /* HAVE_NTGUI */ | |
4525 | ||
4526 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4527 | RGB members are set. F is the frame on which this all happens. | |
4528 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4529 | ||
4530 | static void | |
d3da34e0 | 4531 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4532 | { |
4533 | int x, y; | |
edfda783 | 4534 | XImagePtr oimg = NULL; |
9d7112ed | 4535 | Pixmap pixmap; |
4ef0d4d0 KS |
4536 | XColor *p; |
4537 | ||
4538 | init_color_table (); | |
4539 | ||
4540 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4541 | &oimg, &pixmap); | |
4542 | p = colors; | |
4543 | for (y = 0; y < img->height; ++y) | |
4544 | for (x = 0; x < img->width; ++x, ++p) | |
4545 | { | |
4546 | unsigned long pixel; | |
4547 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4548 | XPutPixel (oimg, x, y, pixel); | |
4549 | } | |
4550 | ||
4551 | xfree (colors); | |
4552 | x_clear_image_1 (f, img, 1, 0, 1); | |
4553 | ||
4554 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4555 | x_destroy_x_image (oimg); | |
4556 | img->pixmap = pixmap; | |
4557 | #ifdef COLOR_TABLE_SUPPORT | |
4558 | img->colors = colors_in_color_table (&img->ncolors); | |
4559 | free_color_table (); | |
4560 | #endif /* COLOR_TABLE_SUPPORT */ | |
4561 | } | |
4562 | ||
4563 | ||
4564 | /* On frame F, perform edge-detection on image IMG. | |
4565 | ||
4566 | MATRIX is a nine-element array specifying the transformation | |
4567 | matrix. See emboss_matrix for an example. | |
4568 | ||
4569 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4570 | outgoing image. */ | |
4571 | ||
4572 | static void | |
d3da34e0 | 4573 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4574 | { |
4575 | XColor *colors = x_to_xcolors (f, img, 1); | |
4576 | XColor *new, *p; | |
4577 | int x, y, i, sum; | |
4578 | ||
4579 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4580 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4581 | |
4582 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4583 | ||
ddff3151 PE |
4584 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *new / img->width < img->height) |
4585 | memory_full (SIZE_MAX); | |
23f86fce | 4586 | new = xmalloc (sizeof *new * img->width * img->height); |
4ef0d4d0 KS |
4587 | |
4588 | for (y = 0; y < img->height; ++y) | |
4589 | { | |
4590 | p = COLOR (new, 0, y); | |
4591 | p->red = p->green = p->blue = 0xffff/2; | |
4592 | p = COLOR (new, img->width - 1, y); | |
4593 | p->red = p->green = p->blue = 0xffff/2; | |
4594 | } | |
4595 | ||
4596 | for (x = 1; x < img->width - 1; ++x) | |
4597 | { | |
4598 | p = COLOR (new, x, 0); | |
4599 | p->red = p->green = p->blue = 0xffff/2; | |
4600 | p = COLOR (new, x, img->height - 1); | |
4601 | p->red = p->green = p->blue = 0xffff/2; | |
4602 | } | |
4603 | ||
4604 | for (y = 1; y < img->height - 1; ++y) | |
4605 | { | |
4606 | p = COLOR (new, 1, y); | |
4607 | ||
4608 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4609 | { | |
6ae141d6 | 4610 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4611 | |
4612 | r = g = b = i = 0; | |
6ae141d6 PE |
4613 | for (yy = y - 1; yy < y + 2; ++yy) |
4614 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4615 | if (matrix[i]) |
4616 | { | |
6ae141d6 | 4617 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4618 | r += matrix[i] * t->red; |
4619 | g += matrix[i] * t->green; | |
4620 | b += matrix[i] * t->blue; | |
4621 | } | |
4622 | ||
4623 | r = (r / sum + color_adjust) & 0xffff; | |
4624 | g = (g / sum + color_adjust) & 0xffff; | |
4625 | b = (b / sum + color_adjust) & 0xffff; | |
4626 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | xfree (colors); | |
4631 | x_from_xcolors (f, img, new); | |
4632 | ||
4633 | #undef COLOR | |
4634 | } | |
4635 | ||
4636 | ||
4637 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4638 | on frame F. */ | |
4639 | ||
4640 | static void | |
d3da34e0 | 4641 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4642 | { |
4643 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4644 | } | |
4645 | ||
4646 | ||
4647 | /* Transform image IMG which is used on frame F with a Laplace | |
4648 | edge-detection algorithm. The result is an image that can be used | |
4649 | to draw disabled buttons, for example. */ | |
4650 | ||
4651 | static void | |
d3da34e0 | 4652 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4653 | { |
4654 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4655 | } | |
4656 | ||
4657 | ||
4658 | /* Perform edge-detection on image IMG on frame F, with specified | |
4659 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4660 | ||
4661 | MATRIX must be either | |
4662 | ||
4663 | - a list of at least 9 numbers in row-major form | |
4664 | - a vector of at least 9 numbers | |
4665 | ||
4666 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4667 | number. */ | |
4668 | ||
4669 | static void | |
d3da34e0 JB |
4670 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4671 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4672 | { |
4673 | int i = 0; | |
4674 | int trans[9]; | |
4675 | ||
4676 | if (CONSP (matrix)) | |
4677 | { | |
4678 | for (i = 0; | |
4679 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4680 | ++i, matrix = XCDR (matrix)) | |
4681 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4682 | } | |
4683 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4684 | { | |
4685 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4686 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4687 | } | |
4688 | ||
4689 | if (NILP (color_adjust)) | |
4690 | color_adjust = make_number (0xffff / 2); | |
4691 | ||
4692 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4693 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4694 | } |
4695 | ||
4696 | ||
4697 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4698 | ||
4699 | static void | |
d3da34e0 | 4700 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4701 | { |
4702 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4703 | #ifdef HAVE_NTGUI | |
4704 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4705 | #else | |
4706 | int n_planes = dpyinfo->n_planes; | |
4707 | #endif /* HAVE_NTGUI */ | |
4708 | ||
4709 | if (n_planes >= 2) | |
4710 | { | |
4711 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4712 | drawing such images with a stipple can look very odd, so | |
4713 | we're using this method instead. */ | |
4714 | XColor *colors = x_to_xcolors (f, img, 1); | |
4715 | XColor *p, *end; | |
4716 | const int h = 15000; | |
4717 | const int l = 30000; | |
4718 | ||
4719 | for (p = colors, end = colors + img->width * img->height; | |
4720 | p < end; | |
4721 | ++p) | |
4722 | { | |
4723 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4724 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4725 | p->red = p->green = p->blue = i2; | |
4726 | } | |
4727 | ||
4728 | x_from_xcolors (f, img, colors); | |
4729 | } | |
4730 | ||
4731 | /* Draw a cross over the disabled image, if we must or if we | |
4732 | should. */ | |
4733 | if (n_planes < 2 || cross_disabled_images) | |
4734 | { | |
4735 | #ifndef HAVE_NTGUI | |
5afa3a81 | 4736 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4737 | |
4ef0d4d0 | 4738 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4739 | |
6045c4fd PE |
4740 | Display *dpy = FRAME_X_DISPLAY (f); |
4741 | GC gc = XCreateGC (dpy, img->pixmap, 0, NULL); | |
4ef0d4d0 KS |
4742 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4743 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4744 | img->width - 1, img->height - 1); | |
4745 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4746 | img->width - 1, 0); | |
4747 | XFreeGC (dpy, gc); | |
4748 | ||
4749 | if (img->mask) | |
4750 | { | |
ae8279db | 4751 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4752 | XSetForeground (dpy, gc, MaskForeground (f)); |
4753 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4754 | img->width - 1, img->height - 1); | |
4755 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4756 | img->width - 1, 0); | |
4757 | XFreeGC (dpy, gc); | |
4758 | } | |
edfda783 | 4759 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4760 | #else |
4761 | HDC hdc, bmpdc; | |
4762 | HGDIOBJ prev; | |
4763 | ||
4764 | hdc = get_frame_dc (f); | |
4765 | bmpdc = CreateCompatibleDC (hdc); | |
4766 | release_frame_dc (f, hdc); | |
4767 | ||
4768 | prev = SelectObject (bmpdc, img->pixmap); | |
4769 | ||
4770 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4771 | MoveToEx (bmpdc, 0, 0, NULL); | |
4772 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4773 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4774 | LineTo (bmpdc, img->width - 1, 0); | |
4775 | ||
4776 | if (img->mask) | |
4777 | { | |
4778 | SelectObject (bmpdc, img->mask); | |
4779 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4780 | MoveToEx (bmpdc, 0, 0, NULL); | |
4781 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4782 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4783 | LineTo (bmpdc, img->width - 1, 0); | |
4784 | } | |
4785 | SelectObject (bmpdc, prev); | |
4786 | DeleteDC (bmpdc); | |
4787 | #endif /* HAVE_NTGUI */ | |
4788 | } | |
4789 | } | |
4790 | ||
4791 | ||
4792 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4793 | name of an image file, for error messages. HOW determines how to | |
4794 | determine the background color of IMG. If it is a list '(R G B)', | |
4795 | with R, G, and B being integers >= 0, take that as the color of the | |
4796 | background. Otherwise, determine the background color of IMG | |
4797 | heuristically. Value is non-zero if successful. */ | |
4798 | ||
4799 | static int | |
d3da34e0 | 4800 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4801 | { |
4802 | XImagePtr_or_DC ximg; | |
4803 | #ifndef HAVE_NTGUI | |
4804 | XImagePtr mask_img; | |
4805 | #else | |
4806 | HDC frame_dc; | |
4807 | HGDIOBJ prev; | |
4808 | char *mask_img; | |
4809 | int row_width; | |
4810 | #endif /* HAVE_NTGUI */ | |
4811 | int x, y, rc, use_img_background; | |
4812 | unsigned long bg = 0; | |
4813 | ||
4814 | if (img->mask) | |
4815 | { | |
4816 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4817 | img->mask = NO_PIXMAP; | |
4818 | img->background_transparent_valid = 0; | |
4819 | } | |
4820 | ||
4821 | #ifndef HAVE_NTGUI | |
edfda783 | 4822 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4823 | /* Create an image and pixmap serving as mask. */ |
4824 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4825 | &mask_img, &img->mask); | |
4826 | if (!rc) | |
4827 | return 0; | |
edfda783 | 4828 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4829 | |
4830 | /* Get the X image of IMG->pixmap. */ | |
4831 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4832 | img->width, img->height, | |
4833 | ~0, ZPixmap); | |
4834 | #else | |
4835 | /* Create the bit array serving as mask. */ | |
4836 | row_width = (img->width + 7) / 8; | |
23f86fce | 4837 | mask_img = xzalloc (row_width * img->height); |
4ef0d4d0 KS |
4838 | |
4839 | /* Create a memory device context for IMG->pixmap. */ | |
4840 | frame_dc = get_frame_dc (f); | |
4841 | ximg = CreateCompatibleDC (frame_dc); | |
4842 | release_frame_dc (f, frame_dc); | |
4843 | prev = SelectObject (ximg, img->pixmap); | |
4844 | #endif /* HAVE_NTGUI */ | |
4845 | ||
4846 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4847 | take that as color. Otherwise, use the image's background color. */ | |
4848 | use_img_background = 1; | |
4849 | ||
4850 | if (CONSP (how)) | |
4851 | { | |
4852 | int rgb[3], i; | |
4853 | ||
4854 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4855 | { | |
4856 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4857 | how = XCDR (how); | |
4858 | } | |
4859 | ||
4860 | if (i == 3 && NILP (how)) | |
4861 | { | |
4862 | char color_name[30]; | |
4863 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4864 | bg = ( | |
4865 | #ifdef HAVE_NTGUI | |
4866 | 0x00ffffff & /* Filter out palette info. */ | |
4867 | #endif /* HAVE_NTGUI */ | |
4868 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4869 | use_img_background = 0; | |
4870 | } | |
4871 | } | |
4872 | ||
4873 | if (use_img_background) | |
6ac3c7bb | 4874 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4875 | |
4876 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4877 | from the background color bg. */ | |
4878 | #ifndef HAVE_NTGUI | |
4879 | for (y = 0; y < img->height; ++y) | |
4880 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4881 | #ifndef HAVE_NS |
4ef0d4d0 | 4882 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4883 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4884 | #else |
4885 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4886 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4887 | #endif /* HAVE_NS */ |
4888 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4889 | /* Fill in the background_transparent field while we have the mask handy. */ |
4890 | image_background_transparent (img, f, mask_img); | |
4891 | ||
4892 | /* Put mask_img into img->mask. */ | |
4893 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4894 | x_destroy_x_image (mask_img); | |
edfda783 | 4895 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4896 | #else |
4897 | for (y = 0; y < img->height; ++y) | |
4898 | for (x = 0; x < img->width; ++x) | |
4899 | { | |
4900 | COLORREF p = GetPixel (ximg, x, y); | |
4901 | if (p != bg) | |
4902 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4903 | } | |
4904 | ||
4905 | /* Create the mask image. */ | |
4906 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4907 | mask_img); | |
4908 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4909 | SelectObject (ximg, img->mask); | |
4910 | image_background_transparent (img, f, ximg); | |
4911 | ||
4912 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4913 | xfree (mask_img); | |
4914 | #endif /* HAVE_NTGUI */ | |
4915 | ||
4916 | Destroy_Image (ximg, prev); | |
4917 | ||
4918 | return 1; | |
4919 | } | |
4920 | ||
4921 | \f | |
4922 | /*********************************************************************** | |
4923 | PBM (mono, gray, color) | |
4924 | ***********************************************************************/ | |
4925 | ||
f57e2426 J |
4926 | static int pbm_image_p (Lisp_Object object); |
4927 | static int pbm_load (struct frame *f, struct image *img); | |
4928 | static int pbm_scan_number (unsigned char **, unsigned char *); | |
4ef0d4d0 KS |
4929 | |
4930 | /* The symbol `pbm' identifying images of this type. */ | |
4931 | ||
955cbe7b | 4932 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
4933 | |
4934 | /* Indices of image specification fields in gs_format, below. */ | |
4935 | ||
4936 | enum pbm_keyword_index | |
4937 | { | |
4938 | PBM_TYPE, | |
4939 | PBM_FILE, | |
4940 | PBM_DATA, | |
4941 | PBM_ASCENT, | |
4942 | PBM_MARGIN, | |
4943 | PBM_RELIEF, | |
4944 | PBM_ALGORITHM, | |
4945 | PBM_HEURISTIC_MASK, | |
4946 | PBM_MASK, | |
4947 | PBM_FOREGROUND, | |
4948 | PBM_BACKGROUND, | |
4949 | PBM_LAST | |
4950 | }; | |
4951 | ||
4952 | /* Vector of image_keyword structures describing the format | |
4953 | of valid user-defined image specifications. */ | |
4954 | ||
91433552 | 4955 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
4956 | { |
4957 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4958 | {":file", IMAGE_STRING_VALUE, 0}, | |
4959 | {":data", IMAGE_STRING_VALUE, 0}, | |
4960 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 4961 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
4962 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
4963 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4964 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4965 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4966 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4967 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4968 | }; | |
4969 | ||
4970 | /* Structure describing the image type `pbm'. */ | |
4971 | ||
4972 | static struct image_type pbm_type = | |
4973 | { | |
4974 | &Qpbm, | |
4975 | pbm_image_p, | |
4976 | pbm_load, | |
4977 | x_clear_image, | |
4978 | NULL | |
4979 | }; | |
4980 | ||
4981 | ||
4982 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
4983 | ||
4984 | static int | |
d3da34e0 | 4985 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
4986 | { |
4987 | struct image_keyword fmt[PBM_LAST]; | |
4988 | ||
72af86bd | 4989 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
4990 | |
4991 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
4992 | return 0; | |
4993 | ||
4994 | /* Must specify either :data or :file. */ | |
4995 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
4996 | } | |
4997 | ||
4998 | ||
4999 | /* Scan a decimal number from *S and return it. Advance *S while | |
5000 | reading the number. END is the end of the string. Value is -1 at | |
5001 | end of input. */ | |
5002 | ||
5003 | static int | |
d3da34e0 | 5004 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
5005 | { |
5006 | int c = 0, val = -1; | |
5007 | ||
5008 | while (*s < end) | |
5009 | { | |
5010 | /* Skip white-space. */ | |
620f13b0 | 5011 | while (*s < end && (c = *(*s)++, c_isspace (c))) |
4ef0d4d0 KS |
5012 | ; |
5013 | ||
5014 | if (c == '#') | |
5015 | { | |
5016 | /* Skip comment to end of line. */ | |
5017 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5018 | ; | |
5019 | } | |
620f13b0 | 5020 | else if (c_isdigit (c)) |
4ef0d4d0 KS |
5021 | { |
5022 | /* Read decimal number. */ | |
5023 | val = c - '0'; | |
620f13b0 | 5024 | while (*s < end && (c = *(*s)++, c_isdigit (c))) |
4ef0d4d0 KS |
5025 | val = 10 * val + c - '0'; |
5026 | break; | |
5027 | } | |
5028 | else | |
5029 | break; | |
5030 | } | |
5031 | ||
5032 | return val; | |
5033 | } | |
5034 | ||
5035 | ||
5036 | #ifdef HAVE_NTGUI | |
5037 | #if 0 /* Unused. ++kfs */ | |
5038 | ||
5039 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5040 | with xmalloc holding FILE's contents. Value is null if an error | |
5041 | occurred. *SIZE is set to the size of the file. */ | |
5042 | ||
5043 | static char * | |
1dae0f0a | 5044 | pbm_read_file (Lisp_Object file, int *size) |
4ef0d4d0 KS |
5045 | { |
5046 | FILE *fp = NULL; | |
5047 | char *buf = NULL; | |
5048 | struct stat st; | |
5049 | ||
5050 | if (stat (SDATA (file), &st) == 0 | |
5051 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
dd52fcea | 5052 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
23f86fce | 5053 | && (buf = xmalloc (st.st_size), |
4ef0d4d0 KS |
5054 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
5055 | { | |
5056 | *size = st.st_size; | |
5057 | fclose (fp); | |
5058 | } | |
5059 | else | |
5060 | { | |
5061 | if (fp) | |
5062 | fclose (fp); | |
5063 | if (buf) | |
5064 | { | |
5065 | xfree (buf); | |
5066 | buf = NULL; | |
5067 | } | |
5068 | } | |
5069 | ||
5070 | return buf; | |
5071 | } | |
5072 | #endif | |
5073 | #endif /* HAVE_NTGUI */ | |
5074 | ||
5075 | /* Load PBM image IMG for use on frame F. */ | |
5076 | ||
5077 | static int | |
d3da34e0 | 5078 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5079 | { |
5080 | int raw_p, x, y; | |
5081 | int width, height, max_color_idx = 0; | |
5082 | XImagePtr ximg; | |
5083 | Lisp_Object file, specified_file; | |
5084 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5085 | unsigned char *contents = NULL; |
5086 | unsigned char *end, *p; | |
dd52fcea | 5087 | ptrdiff_t size; |
4ef0d4d0 KS |
5088 | |
5089 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5090 | |
5091 | if (STRINGP (specified_file)) | |
5092 | { | |
5093 | file = x_find_image_file (specified_file); | |
5094 | if (!STRINGP (file)) | |
5095 | { | |
5096 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5097 | return 0; |
5098 | } | |
5099 | ||
42a5b22f | 5100 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5101 | if (contents == NULL) |
5102 | { | |
5103 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5104 | return 0; |
5105 | } | |
5106 | ||
5107 | p = contents; | |
5108 | end = contents + size; | |
5109 | } | |
5110 | else | |
5111 | { | |
5112 | Lisp_Object data; | |
5113 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5114 | if (!STRINGP (data)) |
5115 | { | |
5116 | image_error ("Invalid image data `%s'", data, Qnil); | |
5117 | return 0; | |
5118 | } | |
4ef0d4d0 KS |
5119 | p = SDATA (data); |
5120 | end = p + SBYTES (data); | |
5121 | } | |
5122 | ||
5123 | /* Check magic number. */ | |
5124 | if (end - p < 2 || *p++ != 'P') | |
5125 | { | |
5126 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5127 | error: | |
5128 | xfree (contents); | |
4ef0d4d0 KS |
5129 | return 0; |
5130 | } | |
5131 | ||
5132 | switch (*p++) | |
5133 | { | |
5134 | case '1': | |
5135 | raw_p = 0, type = PBM_MONO; | |
5136 | break; | |
5137 | ||
5138 | case '2': | |
5139 | raw_p = 0, type = PBM_GRAY; | |
5140 | break; | |
5141 | ||
5142 | case '3': | |
5143 | raw_p = 0, type = PBM_COLOR; | |
5144 | break; | |
5145 | ||
5146 | case '4': | |
5147 | raw_p = 1, type = PBM_MONO; | |
5148 | break; | |
5149 | ||
5150 | case '5': | |
5151 | raw_p = 1, type = PBM_GRAY; | |
5152 | break; | |
5153 | ||
5154 | case '6': | |
5155 | raw_p = 1, type = PBM_COLOR; | |
5156 | break; | |
5157 | ||
5158 | default: | |
5159 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5160 | goto error; | |
5161 | } | |
5162 | ||
5163 | /* Read width, height, maximum color-component. Characters | |
5164 | starting with `#' up to the end of a line are ignored. */ | |
5165 | width = pbm_scan_number (&p, end); | |
5166 | height = pbm_scan_number (&p, end); | |
5167 | ||
5168 | if (type != PBM_MONO) | |
5169 | { | |
5170 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5171 | if (max_color_idx > 65535 || max_color_idx < 0) |
5172 | { | |
5173 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5174 | goto error; | |
5175 | } | |
4ef0d4d0 KS |
5176 | } |
5177 | ||
b9c89e11 JR |
5178 | if (!check_image_size (f, width, height)) |
5179 | { | |
10ea2b82 | 5180 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5181 | goto error; |
5182 | } | |
4ef0d4d0 KS |
5183 | |
5184 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5185 | &ximg, &img->pixmap)) | |
5186 | goto error; | |
5187 | ||
5188 | /* Initialize the color hash table. */ | |
5189 | init_color_table (); | |
5190 | ||
5191 | if (type == PBM_MONO) | |
5192 | { | |
5193 | int c = 0, g; | |
5194 | struct image_keyword fmt[PBM_LAST]; | |
5195 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5196 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5197 | ||
5198 | /* Parse the image specification. */ | |
72af86bd | 5199 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5200 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5201 | ||
5202 | /* Get foreground and background colors, maybe allocate colors. */ | |
5203 | if (fmt[PBM_FOREGROUND].count | |
5204 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5205 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5206 | if (fmt[PBM_BACKGROUND].count | |
5207 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5208 | { | |
5209 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5210 | img->background = bg; | |
5211 | img->background_valid = 1; | |
5212 | } | |
5213 | ||
5214 | for (y = 0; y < height; ++y) | |
5215 | for (x = 0; x < width; ++x) | |
5216 | { | |
5217 | if (raw_p) | |
5218 | { | |
5219 | if ((x & 7) == 0) | |
c295e710 CY |
5220 | { |
5221 | if (p >= end) | |
5222 | { | |
5223 | x_destroy_x_image (ximg); | |
5224 | x_clear_image (f, img); | |
5225 | image_error ("Invalid image size in image `%s'", | |
5226 | img->spec, Qnil); | |
5227 | goto error; | |
5228 | } | |
5229 | c = *p++; | |
5230 | } | |
4ef0d4d0 KS |
5231 | g = c & 0x80; |
5232 | c <<= 1; | |
5233 | } | |
5234 | else | |
5235 | g = pbm_scan_number (&p, end); | |
5236 | ||
5237 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5238 | } | |
5239 | } | |
5240 | else | |
5241 | { | |
b9c89e11 JR |
5242 | int expected_size = height * width; |
5243 | if (max_color_idx > 255) | |
5244 | expected_size *= 2; | |
5245 | if (type == PBM_COLOR) | |
5246 | expected_size *= 3; | |
5247 | ||
5248 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5249 | { |
5250 | x_destroy_x_image (ximg); | |
fb0b0862 | 5251 | x_clear_image (f, img); |
39e653ea CY |
5252 | image_error ("Invalid image size in image `%s'", |
5253 | img->spec, Qnil); | |
5254 | goto error; | |
5255 | } | |
5256 | ||
4ef0d4d0 KS |
5257 | for (y = 0; y < height; ++y) |
5258 | for (x = 0; x < width; ++x) | |
5259 | { | |
5260 | int r, g, b; | |
5261 | ||
b9c89e11 JR |
5262 | if (type == PBM_GRAY && raw_p) |
5263 | { | |
5264 | r = g = b = *p++; | |
5265 | if (max_color_idx > 255) | |
5266 | r = g = b = r * 256 + *p++; | |
5267 | } | |
5268 | else if (type == PBM_GRAY) | |
5269 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5270 | else if (raw_p) |
5271 | { | |
5272 | r = *p++; | |
b9c89e11 JR |
5273 | if (max_color_idx > 255) |
5274 | r = r * 256 + *p++; | |
4ef0d4d0 | 5275 | g = *p++; |
b9c89e11 JR |
5276 | if (max_color_idx > 255) |
5277 | g = g * 256 + *p++; | |
4ef0d4d0 | 5278 | b = *p++; |
b9c89e11 JR |
5279 | if (max_color_idx > 255) |
5280 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5281 | } |
5282 | else | |
5283 | { | |
5284 | r = pbm_scan_number (&p, end); | |
5285 | g = pbm_scan_number (&p, end); | |
5286 | b = pbm_scan_number (&p, end); | |
5287 | } | |
5288 | ||
5289 | if (r < 0 || g < 0 || b < 0) | |
5290 | { | |
5291 | x_destroy_x_image (ximg); | |
5292 | image_error ("Invalid pixel value in image `%s'", | |
5293 | img->spec, Qnil); | |
5294 | goto error; | |
5295 | } | |
5296 | ||
5297 | /* RGB values are now in the range 0..max_color_idx. | |
5298 | Scale this to the range 0..0xffff supported by X. */ | |
5299 | r = (double) r * 65535 / max_color_idx; | |
5300 | g = (double) g * 65535 / max_color_idx; | |
5301 | b = (double) b * 65535 / max_color_idx; | |
5302 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5303 | } | |
5304 | } | |
5305 | ||
5306 | #ifdef COLOR_TABLE_SUPPORT | |
5307 | /* Store in IMG->colors the colors allocated for the image, and | |
5308 | free the color table. */ | |
5309 | img->colors = colors_in_color_table (&img->ncolors); | |
5310 | free_color_table (); | |
5311 | #endif /* COLOR_TABLE_SUPPORT */ | |
5312 | ||
5313 | img->width = width; | |
5314 | img->height = height; | |
5315 | ||
5316 | /* Maybe fill in the background field while we have ximg handy. */ | |
5317 | ||
5318 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5319 | /* Casting avoids a GCC warning. */ |
5320 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5321 | |
5322 | /* Put the image into a pixmap. */ | |
5323 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5324 | x_destroy_x_image (ximg); | |
5325 | ||
5326 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5327 | img->width = width; |
4ef0d4d0 KS |
5328 | img->height = height; */ |
5329 | ||
4ef0d4d0 KS |
5330 | xfree (contents); |
5331 | return 1; | |
5332 | } | |
5333 | ||
5334 | \f | |
5335 | /*********************************************************************** | |
5336 | PNG | |
5337 | ***********************************************************************/ | |
5338 | ||
9e2a2647 | 5339 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5340 | |
5341 | /* Function prototypes. */ | |
5342 | ||
f57e2426 J |
5343 | static int png_image_p (Lisp_Object object); |
5344 | static int png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5345 | |
5346 | /* The symbol `png' identifying images of this type. */ | |
5347 | ||
955cbe7b | 5348 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5349 | |
5350 | /* Indices of image specification fields in png_format, below. */ | |
5351 | ||
5352 | enum png_keyword_index | |
5353 | { | |
5354 | PNG_TYPE, | |
5355 | PNG_DATA, | |
5356 | PNG_FILE, | |
5357 | PNG_ASCENT, | |
5358 | PNG_MARGIN, | |
5359 | PNG_RELIEF, | |
5360 | PNG_ALGORITHM, | |
5361 | PNG_HEURISTIC_MASK, | |
5362 | PNG_MASK, | |
5363 | PNG_BACKGROUND, | |
5364 | PNG_LAST | |
5365 | }; | |
5366 | ||
5367 | /* Vector of image_keyword structures describing the format | |
5368 | of valid user-defined image specifications. */ | |
5369 | ||
91433552 | 5370 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5371 | { |
5372 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5373 | {":data", IMAGE_STRING_VALUE, 0}, | |
5374 | {":file", IMAGE_STRING_VALUE, 0}, | |
5375 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5376 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5377 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5378 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5379 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5380 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5381 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5382 | }; | |
5383 | ||
5384 | /* Structure describing the image type `png'. */ | |
5385 | ||
5386 | static struct image_type png_type = | |
5387 | { | |
5388 | &Qpng, | |
5389 | png_image_p, | |
5390 | png_load, | |
5391 | x_clear_image, | |
5392 | NULL | |
5393 | }; | |
5394 | ||
5395 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5396 | ||
5397 | static int | |
d3da34e0 | 5398 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5399 | { |
5400 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5401 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5402 | |
5403 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5404 | return 0; | |
5405 | ||
5406 | /* Must specify either the :data or :file keyword. */ | |
5407 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5408 | } | |
5409 | ||
9e2a2647 | 5410 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5411 | |
5412 | ||
5413 | #ifdef HAVE_PNG | |
5414 | ||
4ef0d4d0 KS |
5415 | #ifdef HAVE_NTGUI |
5416 | /* PNG library details. */ | |
5417 | ||
14beddf4 CY |
5418 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5419 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5420 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5421 | png_error_ptr, png_error_ptr)); | |
5422 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5423 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5424 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5425 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5426 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5427 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5428 | png_uint_32 *, png_uint_32 *, |
5429 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5430 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5431 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5432 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5433 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5434 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5435 | int, int, double)); |
14beddf4 CY |
5436 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5437 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5438 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5439 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5440 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5441 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5442 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5443 | |
7f9c5df9 | 5444 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5445 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5446 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5447 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 KS |
5448 | |
5449 | static int | |
0855eb52 | 5450 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
5451 | { |
5452 | HMODULE library; | |
5453 | ||
0855eb52 | 5454 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
5455 | return 0; |
5456 | ||
5457 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5458 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5459 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5460 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5461 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5462 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5463 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5464 | LOAD_IMGLIB_FN (library, png_read_info); | |
5465 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5466 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5467 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5468 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5469 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5470 | LOAD_IMGLIB_FN (library, png_set_background); | |
5471 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5472 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5473 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5474 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5475 | LOAD_IMGLIB_FN (library, png_read_image); | |
5476 | LOAD_IMGLIB_FN (library, png_read_end); | |
5477 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5478 | |
5479 | #if (PNG_LIBPNG_VER >= 10500) | |
5480 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5481 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5482 | #endif /* libpng version >= 1.5 */ | |
5483 | ||
4ef0d4d0 KS |
5484 | return 1; |
5485 | } | |
5486 | #else | |
5487 | ||
5488 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5489 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5490 | #define fn_png_create_read_struct png_create_read_struct |
5491 | #define fn_png_create_info_struct png_create_info_struct | |
5492 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5493 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5494 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5495 | #define fn_png_read_info png_read_info | |
5496 | #define fn_png_get_IHDR png_get_IHDR | |
5497 | #define fn_png_get_valid png_get_valid | |
5498 | #define fn_png_set_strip_16 png_set_strip_16 | |
5499 | #define fn_png_set_expand png_set_expand | |
5500 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5501 | #define fn_png_set_background png_set_background | |
5502 | #define fn_png_get_bKGD png_get_bKGD | |
5503 | #define fn_png_read_update_info png_read_update_info | |
5504 | #define fn_png_get_channels png_get_channels | |
5505 | #define fn_png_get_rowbytes png_get_rowbytes | |
5506 | #define fn_png_read_image png_read_image | |
5507 | #define fn_png_read_end png_read_end | |
5508 | #define fn_png_error png_error | |
5509 | ||
7f9c5df9 CY |
5510 | #if (PNG_LIBPNG_VER >= 10500) |
5511 | #define fn_png_longjmp png_longjmp | |
5512 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5513 | #endif /* libpng version >= 1.5 */ | |
5514 | ||
4ef0d4d0 KS |
5515 | #endif /* HAVE_NTGUI */ |
5516 | ||
7f9c5df9 CY |
5517 | |
5518 | #if (PNG_LIBPNG_VER < 10500) | |
af26b72c | 5519 | #define PNG_LONGJMP(ptr) (_longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5520 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5521 | #else | |
df61c790 | 5522 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5523 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5524 | #define PNG_JMPBUF(ptr) \ |
af26b72c | 5525 | (*fn_png_set_longjmp_fn ((ptr), _longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5526 | #endif |
5527 | ||
4ef0d4d0 KS |
5528 | /* Error and warning handlers installed when the PNG library |
5529 | is initialized. */ | |
5530 | ||
845ca893 | 5531 | static _Noreturn void |
d3da34e0 | 5532 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5533 | { |
a54e2c05 | 5534 | eassert (png_ptr != NULL); |
5be1c984 EZ |
5535 | /* Avoid compiler warning about deprecated direct access to |
5536 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5537 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5538 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5539 | } |
5540 | ||
5541 | ||
5542 | static void | |
d3da34e0 | 5543 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 | 5544 | { |
a54e2c05 | 5545 | eassert (png_ptr != NULL); |
4ef0d4d0 KS |
5546 | image_error ("PNG warning: %s", build_string (msg), Qnil); |
5547 | } | |
5548 | ||
5549 | /* Memory source for PNG decoding. */ | |
5550 | ||
5551 | struct png_memory_storage | |
5552 | { | |
5553 | unsigned char *bytes; /* The data */ | |
3f791afe PE |
5554 | ptrdiff_t len; /* How big is it? */ |
5555 | ptrdiff_t index; /* Where are we? */ | |
4ef0d4d0 KS |
5556 | }; |
5557 | ||
5558 | ||
5559 | /* Function set as reader function when reading PNG image from memory. | |
5560 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5561 | bytes from the input to DATA. */ | |
5562 | ||
5563 | static void | |
d3da34e0 | 5564 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5565 | { |
5566 | struct png_memory_storage *tbr | |
5567 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5568 | ||
5569 | if (length > tbr->len - tbr->index) | |
5570 | fn_png_error (png_ptr, "Read error"); | |
5571 | ||
72af86bd | 5572 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5573 | tbr->index = tbr->index + length; |
5574 | } | |
5575 | ||
b0da69a7 | 5576 | |
9a22a004 JB |
5577 | /* Function set as reader function when reading PNG image from a file. |
5578 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5579 | bytes from the input to DATA. */ | |
5580 | ||
5581 | static void | |
d3da34e0 | 5582 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5583 | { |
5584 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5585 | ||
5586 | if (fread (data, 1, length, fp) < length) | |
5587 | fn_png_error (png_ptr, "Read error"); | |
5588 | } | |
5589 | ||
5590 | ||
4ef0d4d0 KS |
5591 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
5592 | successful. */ | |
5593 | ||
5594 | static int | |
d3da34e0 | 5595 | png_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5596 | { |
5597 | Lisp_Object file, specified_file; | |
5598 | Lisp_Object specified_data; | |
5adf60bc PE |
5599 | int x, y; |
5600 | ptrdiff_t i; | |
4ef0d4d0 | 5601 | XImagePtr ximg, mask_img = NULL; |
4ef0d4d0 KS |
5602 | png_struct *png_ptr = NULL; |
5603 | png_info *info_ptr = NULL, *end_info = NULL; | |
5604 | FILE *volatile fp = NULL; | |
5605 | png_byte sig[8]; | |
5606 | png_byte * volatile pixels = NULL; | |
5607 | png_byte ** volatile rows = NULL; | |
5608 | png_uint_32 width, height; | |
5609 | int bit_depth, color_type, interlace_type; | |
5610 | png_byte channels; | |
5611 | png_uint_32 row_bytes; | |
5612 | int transparent_p; | |
4ef0d4d0 KS |
5613 | struct png_memory_storage tbr; /* Data to be read */ |
5614 | ||
5615 | /* Find out what file to load. */ | |
5616 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5617 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5618 | |
5619 | if (NILP (specified_data)) | |
5620 | { | |
5621 | file = x_find_image_file (specified_file); | |
5622 | if (!STRINGP (file)) | |
5623 | { | |
5624 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5625 | return 0; |
5626 | } | |
5627 | ||
5628 | /* Open the image file. */ | |
42a5b22f | 5629 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5630 | if (!fp) |
5631 | { | |
5632 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5633 | return 0; |
5634 | } | |
5635 | ||
5636 | /* Check PNG signature. */ | |
5637 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5638 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5639 | { |
5640 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5641 | fclose (fp); |
5642 | return 0; | |
5643 | } | |
5644 | } | |
5645 | else | |
5646 | { | |
7574650a AS |
5647 | if (!STRINGP (specified_data)) |
5648 | { | |
5649 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5650 | return 0; | |
5651 | } | |
5652 | ||
4ef0d4d0 KS |
5653 | /* Read from memory. */ |
5654 | tbr.bytes = SDATA (specified_data); | |
5655 | tbr.len = SBYTES (specified_data); | |
5656 | tbr.index = 0; | |
5657 | ||
5658 | /* Check PNG signature. */ | |
5659 | if (tbr.len < sizeof sig | |
285d07e2 | 5660 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5661 | { |
5662 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5663 | return 0; |
5664 | } | |
5665 | ||
5666 | /* Need to skip past the signature. */ | |
5667 | tbr.bytes += sizeof (sig); | |
5668 | } | |
5669 | ||
df61c790 AS |
5670 | /* Initialize read and info structs for PNG lib. */ |
5671 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5672 | NULL, my_png_error, | |
5673 | my_png_warning); | |
4ef0d4d0 KS |
5674 | if (!png_ptr) |
5675 | { | |
5676 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5677 | return 0; |
5678 | } | |
5679 | ||
df61c790 | 5680 | info_ptr = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5681 | if (!info_ptr) |
5682 | { | |
5683 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
5684 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5685 | return 0; |
5686 | } | |
5687 | ||
df61c790 | 5688 | end_info = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5689 | if (!end_info) |
5690 | { | |
5691 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
5692 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5693 | return 0; |
5694 | } | |
5695 | ||
5696 | /* Set error jump-back. We come back here when the PNG library | |
5697 | detects an error. */ | |
af26b72c | 5698 | if (_setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5699 | { |
5700 | error: | |
5701 | if (png_ptr) | |
5702 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5703 | xfree (pixels); | |
5704 | xfree (rows); | |
5705 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5706 | return 0; |
5707 | } | |
5708 | ||
5709 | /* Read image info. */ | |
5710 | if (!NILP (specified_data)) | |
5711 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5712 | else | |
9a22a004 | 5713 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5714 | |
5715 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5716 | fn_png_read_info (png_ptr, info_ptr); | |
5717 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5718 | &interlace_type, NULL, NULL); | |
5719 | ||
3f791afe PE |
5720 | if (! (width <= INT_MAX && height <= INT_MAX |
5721 | && check_image_size (f, width, height))) | |
10ea2b82 JR |
5722 | { |
5723 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5724 | goto error; | |
5725 | } | |
ca4aa935 PE |
5726 | |
5727 | /* Create the X image and pixmap now, so that the work below can be | |
5728 | omitted if the image is too large for X. */ | |
5729 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5730 | &img->pixmap)) | |
5731 | goto error; | |
5732 | ||
4ef0d4d0 KS |
5733 | /* If image contains simply transparency data, we prefer to |
5734 | construct a clipping mask. */ | |
5735 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5736 | transparent_p = 1; | |
5737 | else | |
5738 | transparent_p = 0; | |
5739 | ||
5740 | /* This function is easier to write if we only have to handle | |
5741 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5742 | transform other formats into that format. */ | |
5743 | ||
5744 | /* Strip more than 8 bits per channel. */ | |
5745 | if (bit_depth == 16) | |
5746 | fn_png_set_strip_16 (png_ptr); | |
5747 | ||
5748 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5749 | if available. */ | |
5750 | fn_png_set_expand (png_ptr); | |
5751 | ||
5752 | /* Convert grayscale images to RGB. */ | |
5753 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5754 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5755 | fn_png_set_gray_to_rgb (png_ptr); | |
5756 | ||
4ef0d4d0 KS |
5757 | /* Handle alpha channel by combining the image with a background |
5758 | color. Do this only if a real alpha channel is supplied. For | |
5759 | simple transparency, we prefer a clipping mask. */ | |
5760 | if (!transparent_p) | |
5761 | { | |
917ac1a9 | 5762 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5763 | Lisp_Object specified_bg |
5764 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5765 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5766 | |
5767 | if (STRINGP (specified_bg)) | |
5768 | /* The user specified `:background', use that. */ | |
5769 | { | |
4ef0d4d0 | 5770 | XColor color; |
42a5b22f | 5771 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5772 | { |
5773 | png_color_16 user_bg; | |
5774 | ||
72af86bd | 5775 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5776 | user_bg.red = color.red >> shift; |
5777 | user_bg.green = color.green >> shift; | |
5778 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5779 | |
5780 | fn_png_set_background (png_ptr, &user_bg, | |
5781 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5782 | } | |
5783 | } | |
4ef0d4d0 KS |
5784 | else |
5785 | { | |
c4f13f44 CY |
5786 | /* We use the current frame background, ignoring any default |
5787 | background color set by the image. */ | |
8b7d0a16 | 5788 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5789 | XColor color; |
5790 | png_color_16 frame_background; | |
5791 | ||
5792 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5793 | x_query_color (f, &color); | |
5794 | ||
72af86bd | 5795 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5796 | frame_background.red = color.red >> shift; |
5797 | frame_background.green = color.green >> shift; | |
5798 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5799 | #endif /* HAVE_X_WINDOWS */ |
5800 | ||
4ef0d4d0 KS |
5801 | fn_png_set_background (png_ptr, &frame_background, |
5802 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5803 | } | |
5804 | } | |
5805 | ||
5806 | /* Update info structure. */ | |
5807 | fn_png_read_update_info (png_ptr, info_ptr); | |
5808 | ||
5809 | /* Get number of channels. Valid values are 1 for grayscale images | |
5810 | and images with a palette, 2 for grayscale images with transparency | |
5811 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5812 | images with alpha channel, i.e. RGBA. If conversions above were | |
5813 | sufficient we should only have 3 or 4 channels here. */ | |
5814 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
a54e2c05 | 5815 | eassert (channels == 3 || channels == 4); |
4ef0d4d0 KS |
5816 | |
5817 | /* Number of bytes needed for one row of the image. */ | |
5818 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5819 | ||
5820 | /* Allocate memory for the image. */ | |
3f791afe PE |
5821 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height |
5822 | || min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes) | |
5823 | memory_full (SIZE_MAX); | |
23f86fce DA |
5824 | pixels = xmalloc (sizeof *pixels * row_bytes * height); |
5825 | rows = xmalloc (height * sizeof *rows); | |
4ef0d4d0 KS |
5826 | for (i = 0; i < height; ++i) |
5827 | rows[i] = pixels + i * row_bytes; | |
5828 | ||
5829 | /* Read the entire image. */ | |
5830 | fn_png_read_image (png_ptr, rows); | |
5831 | fn_png_read_end (png_ptr, info_ptr); | |
5832 | if (fp) | |
5833 | { | |
5834 | fclose (fp); | |
5835 | fp = NULL; | |
5836 | } | |
5837 | ||
4ef0d4d0 KS |
5838 | /* Create an image and pixmap serving as mask if the PNG image |
5839 | contains an alpha channel. */ | |
5840 | if (channels == 4 | |
5841 | && !transparent_p | |
5842 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5843 | &mask_img, &img->mask)) | |
5844 | { | |
5845 | x_destroy_x_image (ximg); | |
5846 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5847 | img->pixmap = NO_PIXMAP; | |
5848 | goto error; | |
5849 | } | |
5850 | ||
5851 | /* Fill the X image and mask from PNG data. */ | |
5852 | init_color_table (); | |
5853 | ||
5854 | for (y = 0; y < height; ++y) | |
5855 | { | |
5856 | png_byte *p = rows[y]; | |
5857 | ||
5858 | for (x = 0; x < width; ++x) | |
5859 | { | |
13464394 | 5860 | int r, g, b; |
4ef0d4d0 KS |
5861 | |
5862 | r = *p++ << 8; | |
5863 | g = *p++ << 8; | |
5864 | b = *p++ << 8; | |
5865 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5866 | /* An alpha channel, aka mask channel, associates variable | |
5867 | transparency with an image. Where other image formats | |
5868 | support binary transparency---fully transparent or fully | |
5869 | opaque---PNG allows up to 254 levels of partial transparency. | |
5870 | The PNG library implements partial transparency by combining | |
5871 | the image with a specified background color. | |
5872 | ||
5873 | I'm not sure how to handle this here nicely: because the | |
5874 | background on which the image is displayed may change, for | |
5875 | real alpha channel support, it would be necessary to create | |
5876 | a new image for each possible background. | |
5877 | ||
5878 | What I'm doing now is that a mask is created if we have | |
5879 | boolean transparency information. Otherwise I'm using | |
5880 | the frame's background color to combine the image with. */ | |
5881 | ||
5882 | if (channels == 4) | |
5883 | { | |
5884 | if (mask_img) | |
9ecf6403 | 5885 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5886 | ++p; |
5887 | } | |
5888 | } | |
5889 | } | |
5890 | ||
5891 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5892 | /* Set IMG's background color from the PNG image, unless the user | |
5893 | overrode it. */ | |
5894 | { | |
5895 | png_color_16 *bg; | |
5896 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5897 | { | |
5898 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5899 | img->background_valid = 1; | |
5900 | } | |
5901 | } | |
5902 | ||
5903 | #ifdef COLOR_TABLE_SUPPORT | |
5904 | /* Remember colors allocated for this image. */ | |
5905 | img->colors = colors_in_color_table (&img->ncolors); | |
5906 | free_color_table (); | |
5907 | #endif /* COLOR_TABLE_SUPPORT */ | |
5908 | ||
5909 | /* Clean up. */ | |
5910 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5911 | xfree (rows); | |
5912 | xfree (pixels); | |
5913 | ||
5914 | img->width = width; | |
5915 | img->height = height; | |
5916 | ||
2e09fef1 EZ |
5917 | /* Maybe fill in the background field while we have ximg handy. |
5918 | Casting avoids a GCC warning. */ | |
5919 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5920 | |
5921 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5922 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5923 | x_destroy_x_image (ximg); | |
5924 | ||
5925 | /* Same for the mask. */ | |
5926 | if (mask_img) | |
5927 | { | |
2e09fef1 EZ |
5928 | /* Fill in the background_transparent field while we have the |
5929 | mask handy. Casting avoids a GCC warning. */ | |
5930 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5931 | |
5932 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5933 | x_destroy_x_image (mask_img); | |
5934 | } | |
5935 | ||
4ef0d4d0 KS |
5936 | return 1; |
5937 | } | |
5938 | ||
5939 | #else /* HAVE_PNG */ | |
5940 | ||
edfda783 AR |
5941 | #ifdef HAVE_NS |
5942 | static int | |
5943 | png_load (struct frame *f, struct image *img) | |
5944 | { | |
5e617bc2 JB |
5945 | return ns_load_image (f, img, |
5946 | image_spec_value (img->spec, QCfile, NULL), | |
5947 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
5948 | } |
5949 | #endif /* HAVE_NS */ | |
5950 | ||
5951 | ||
4ef0d4d0 KS |
5952 | #endif /* !HAVE_PNG */ |
5953 | ||
5954 | ||
5955 | \f | |
5956 | /*********************************************************************** | |
5957 | JPEG | |
5958 | ***********************************************************************/ | |
5959 | ||
9e2a2647 | 5960 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5961 | |
f57e2426 J |
5962 | static int jpeg_image_p (Lisp_Object object); |
5963 | static int jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5964 | |
5965 | /* The symbol `jpeg' identifying images of this type. */ | |
5966 | ||
955cbe7b | 5967 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
5968 | |
5969 | /* Indices of image specification fields in gs_format, below. */ | |
5970 | ||
5971 | enum jpeg_keyword_index | |
5972 | { | |
5973 | JPEG_TYPE, | |
5974 | JPEG_DATA, | |
5975 | JPEG_FILE, | |
5976 | JPEG_ASCENT, | |
5977 | JPEG_MARGIN, | |
5978 | JPEG_RELIEF, | |
5979 | JPEG_ALGORITHM, | |
5980 | JPEG_HEURISTIC_MASK, | |
5981 | JPEG_MASK, | |
5982 | JPEG_BACKGROUND, | |
5983 | JPEG_LAST | |
5984 | }; | |
5985 | ||
5986 | /* Vector of image_keyword structures describing the format | |
5987 | of valid user-defined image specifications. */ | |
5988 | ||
91433552 | 5989 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
5990 | { |
5991 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5992 | {":data", IMAGE_STRING_VALUE, 0}, | |
5993 | {":file", IMAGE_STRING_VALUE, 0}, | |
5994 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5995 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5996 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5997 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5998 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5999 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6000 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6001 | }; | |
6002 | ||
6003 | /* Structure describing the image type `jpeg'. */ | |
6004 | ||
6005 | static struct image_type jpeg_type = | |
6006 | { | |
6007 | &Qjpeg, | |
6008 | jpeg_image_p, | |
6009 | jpeg_load, | |
6010 | x_clear_image, | |
6011 | NULL | |
6012 | }; | |
6013 | ||
6014 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6015 | ||
6016 | static int | |
d3da34e0 | 6017 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6018 | { |
6019 | struct image_keyword fmt[JPEG_LAST]; | |
6020 | ||
72af86bd | 6021 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
6022 | |
6023 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6024 | return 0; | |
6025 | ||
6026 | /* Must specify either the :data or :file keyword. */ | |
6027 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6028 | } | |
6029 | ||
9e2a2647 | 6030 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6031 | |
6032 | #ifdef HAVE_JPEG | |
6033 | ||
6034 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6035 | jconfig.h. */ | |
6036 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6037 | #undef HAVE_STDLIB_H |
6038 | #endif /* HAVE_STLIB_H */ | |
6039 | ||
66354420 | 6040 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6041 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6042 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6043 | #define __WIN32__ 1 |
6044 | #endif | |
6045 | ||
4ef0d4d0 KS |
6046 | #include <jpeglib.h> |
6047 | #include <jerror.h> | |
4ef0d4d0 KS |
6048 | |
6049 | #ifdef HAVE_STLIB_H_1 | |
6050 | #define HAVE_STDLIB_H 1 | |
6051 | #endif | |
6052 | ||
6053 | #ifdef HAVE_NTGUI | |
6054 | ||
6055 | /* JPEG library details. */ | |
14beddf4 CY |
6056 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6057 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6058 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6059 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6060 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6061 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6062 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6063 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 KS |
6064 | |
6065 | static int | |
0855eb52 | 6066 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6067 | { |
6068 | HMODULE library; | |
6069 | ||
0855eb52 | 6070 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6071 | return 0; |
6072 | ||
6073 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6074 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6075 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6076 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6077 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6078 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6079 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6080 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6081 | return 1; | |
6082 | } | |
6083 | ||
6084 | /* Wrapper since we can't directly assign the function pointer | |
6085 | to another function pointer that was declared more completely easily. */ | |
6086 | static boolean | |
7c3320d8 | 6087 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6088 | { |
6089 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6090 | } | |
6091 | ||
6092 | #else | |
6093 | ||
5e617bc2 | 6094 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress (a) |
4ef0d4d0 KS |
6095 | #define fn_jpeg_start_decompress jpeg_start_decompress |
6096 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6097 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6098 | #define fn_jpeg_read_header jpeg_read_header | |
6099 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6100 | #define fn_jpeg_std_error jpeg_std_error |
6101 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6102 | ||
6103 | #endif /* HAVE_NTGUI */ | |
6104 | ||
6105 | struct my_jpeg_error_mgr | |
6106 | { | |
6107 | struct jpeg_error_mgr pub; | |
6108 | jmp_buf setjmp_buffer; | |
6109 | }; | |
6110 | ||
6111 | ||
845ca893 | 6112 | static _Noreturn void |
d3da34e0 | 6113 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6114 | { |
6115 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
af26b72c | 6116 | _longjmp (mgr->setjmp_buffer, 1); |
4ef0d4d0 KS |
6117 | } |
6118 | ||
6119 | ||
6120 | /* Init source method for JPEG data source manager. Called by | |
6121 | jpeg_read_header() before any data is actually read. See | |
6122 | libjpeg.doc from the JPEG lib distribution. */ | |
6123 | ||
6124 | static void | |
d3da34e0 | 6125 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6126 | { |
6127 | } | |
6128 | ||
6129 | ||
6130 | /* Method to terminate data source. Called by | |
6131 | jpeg_finish_decompress() after all data has been processed. */ | |
6132 | ||
6133 | static void | |
d3da34e0 | 6134 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6135 | { |
6136 | } | |
6137 | ||
6138 | ||
6139 | /* Fill input buffer method for JPEG data source manager. Called | |
6140 | whenever more data is needed. We read the whole image in one step, | |
6141 | so this only adds a fake end of input marker at the end. */ | |
6142 | ||
5a1539f3 | 6143 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6144 | |
4ef0d4d0 | 6145 | static boolean |
d3da34e0 | 6146 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6147 | { |
6148 | /* Insert a fake EOI marker. */ | |
6149 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6150 | |
5a1539f3 MB |
6151 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6152 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6153 | |
5a1539f3 | 6154 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6155 | src->bytes_in_buffer = 2; |
e0e30823 | 6156 | return 1; |
4ef0d4d0 KS |
6157 | } |
6158 | ||
6159 | ||
6160 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6161 | is the JPEG data source manager. */ | |
6162 | ||
6163 | static void | |
d3da34e0 | 6164 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6165 | { |
6166 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6167 | ||
6168 | if (src) | |
6169 | { | |
6170 | if (num_bytes > src->bytes_in_buffer) | |
6171 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6172 | ||
6173 | src->bytes_in_buffer -= num_bytes; | |
6174 | src->next_input_byte += num_bytes; | |
6175 | } | |
6176 | } | |
6177 | ||
6178 | ||
4ef0d4d0 KS |
6179 | /* Set up the JPEG lib for reading an image from DATA which contains |
6180 | LEN bytes. CINFO is the decompression info structure created for | |
6181 | reading the image. */ | |
6182 | ||
6183 | static void | |
d3da34e0 | 6184 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len) |
4ef0d4d0 KS |
6185 | { |
6186 | struct jpeg_source_mgr *src; | |
6187 | ||
6188 | if (cinfo->src == NULL) | |
6189 | { | |
6190 | /* First time for this JPEG object? */ | |
6191 | cinfo->src = (struct jpeg_source_mgr *) | |
6192 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6193 | sizeof (struct jpeg_source_mgr)); | |
6194 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6195 | src->next_input_byte = data; | |
6196 | } | |
6197 | ||
6198 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6199 | src->init_source = our_common_init_source; |
6200 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6201 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6202 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6203 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6204 | src->bytes_in_buffer = len; |
6205 | src->next_input_byte = data; | |
6206 | } | |
6207 | ||
6208 | ||
b25a72ab JB |
6209 | struct jpeg_stdio_mgr |
6210 | { | |
6211 | struct jpeg_source_mgr mgr; | |
6212 | boolean finished; | |
6213 | FILE *file; | |
6214 | JOCTET *buffer; | |
6215 | }; | |
6216 | ||
6217 | ||
6218 | /* Size of buffer to read JPEG from file. | |
6219 | Not too big, as we want to use alloc_small. */ | |
6220 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6221 | ||
6222 | ||
6223 | /* Fill input buffer method for JPEG data source manager. Called | |
6224 | whenever more data is needed. The data is read from a FILE *. */ | |
6225 | ||
6226 | static boolean | |
d3da34e0 | 6227 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6228 | { |
6229 | struct jpeg_stdio_mgr *src; | |
6230 | ||
6231 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6232 | if (!src->finished) | |
6233 | { | |
3f791afe | 6234 | ptrdiff_t bytes; |
b25a72ab JB |
6235 | |
6236 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6237 | if (bytes > 0) | |
6238 | src->mgr.bytes_in_buffer = bytes; | |
6239 | else | |
6240 | { | |
6241 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6242 | src->finished = 1; | |
6243 | src->buffer[0] = (JOCTET) 0xFF; | |
6244 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6245 | src->mgr.bytes_in_buffer = 2; | |
6246 | } | |
6247 | src->mgr.next_input_byte = src->buffer; | |
6248 | } | |
6249 | ||
6250 | return 1; | |
6251 | } | |
6252 | ||
6253 | ||
6254 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6255 | is the JPEG data source manager. */ | |
6256 | ||
6257 | static void | |
d3da34e0 | 6258 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6259 | { |
6260 | struct jpeg_stdio_mgr *src; | |
6261 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6262 | ||
6263 | while (num_bytes > 0 && !src->finished) | |
6264 | { | |
6265 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6266 | { | |
6267 | src->mgr.bytes_in_buffer -= num_bytes; | |
6268 | src->mgr.next_input_byte += num_bytes; | |
6269 | break; | |
6270 | } | |
6271 | else | |
6272 | { | |
6273 | num_bytes -= src->mgr.bytes_in_buffer; | |
6274 | src->mgr.bytes_in_buffer = 0; | |
6275 | src->mgr.next_input_byte = NULL; | |
6276 | ||
6277 | our_stdio_fill_input_buffer (cinfo); | |
6278 | } | |
6279 | } | |
6280 | } | |
6281 | ||
6282 | ||
6283 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6284 | CINFO is the decompression info structure created for | |
6285 | reading the image. */ | |
6286 | ||
6287 | static void | |
d3da34e0 | 6288 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6289 | { |
6290 | struct jpeg_stdio_mgr *src; | |
6291 | ||
6292 | if (cinfo->src != NULL) | |
6293 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6294 | else | |
6295 | { | |
6296 | /* First time for this JPEG object? */ | |
6297 | cinfo->src = (struct jpeg_source_mgr *) | |
6298 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6299 | sizeof (struct jpeg_stdio_mgr)); | |
6300 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6301 | src->buffer = (JOCTET *) | |
6302 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6303 | JPEG_STDIO_BUFFER_SIZE); | |
6304 | } | |
6305 | ||
6306 | src->file = fp; | |
6307 | src->finished = 0; | |
6308 | src->mgr.init_source = our_common_init_source; | |
6309 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6310 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6311 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6312 | src->mgr.term_source = our_common_term_source; | |
6313 | src->mgr.bytes_in_buffer = 0; | |
6314 | src->mgr.next_input_byte = NULL; | |
6315 | } | |
6316 | ||
6317 | ||
4ef0d4d0 KS |
6318 | /* Load image IMG for use on frame F. Patterned after example.c |
6319 | from the JPEG lib. */ | |
6320 | ||
6321 | static int | |
d3da34e0 | 6322 | jpeg_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6323 | { |
6324 | struct jpeg_decompress_struct cinfo; | |
6325 | struct my_jpeg_error_mgr mgr; | |
6326 | Lisp_Object file, specified_file; | |
6327 | Lisp_Object specified_data; | |
6328 | FILE * volatile fp = NULL; | |
6329 | JSAMPARRAY buffer; | |
6330 | int row_stride, x, y; | |
6331 | XImagePtr ximg = NULL; | |
6332 | int rc; | |
6333 | unsigned long *colors; | |
6334 | int width, height; | |
4ef0d4d0 KS |
6335 | |
6336 | /* Open the JPEG file. */ | |
6337 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6338 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6339 | |
6340 | if (NILP (specified_data)) | |
6341 | { | |
6342 | file = x_find_image_file (specified_file); | |
6343 | if (!STRINGP (file)) | |
6344 | { | |
6345 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6346 | return 0; |
6347 | } | |
6348 | ||
42a5b22f | 6349 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6350 | if (fp == NULL) |
6351 | { | |
6352 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6353 | return 0; |
6354 | } | |
6355 | } | |
7574650a AS |
6356 | else if (!STRINGP (specified_data)) |
6357 | { | |
6358 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6359 | return 0; | |
6360 | } | |
4ef0d4d0 KS |
6361 | |
6362 | /* Customize libjpeg's error handling to call my_error_exit when an | |
df61c790 AS |
6363 | error is detected. This function will perform a longjmp. */ |
6364 | cinfo.err = fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
6365 | mgr.pub.error_exit = my_error_exit; |
6366 | ||
af26b72c | 6367 | if ((rc = _setjmp (mgr.setjmp_buffer)) != 0) |
4ef0d4d0 KS |
6368 | { |
6369 | if (rc == 1) | |
6370 | { | |
6371 | /* Called from my_error_exit. Display a JPEG error. */ | |
6ae141d6 PE |
6372 | char buf[JMSG_LENGTH_MAX]; |
6373 | cinfo.err->format_message ((j_common_ptr) &cinfo, buf); | |
4ef0d4d0 | 6374 | image_error ("Error reading JPEG image `%s': %s", img->spec, |
6ae141d6 | 6375 | build_string (buf)); |
4ef0d4d0 KS |
6376 | } |
6377 | ||
6378 | /* Close the input file and destroy the JPEG object. */ | |
6379 | if (fp) | |
6380 | fclose ((FILE *) fp); | |
6381 | fn_jpeg_destroy_decompress (&cinfo); | |
6382 | ||
6383 | /* If we already have an XImage, free that. */ | |
6384 | x_destroy_x_image (ximg); | |
6385 | ||
6386 | /* Free pixmap and colors. */ | |
6387 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6388 | return 0; |
6389 | } | |
6390 | ||
6391 | /* Create the JPEG decompression object. Let it read from fp. | |
6392 | Read the JPEG image header. */ | |
6393 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
6394 | ||
6395 | if (NILP (specified_data)) | |
b25a72ab | 6396 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
6397 | else |
6398 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
6399 | SBYTES (specified_data)); | |
6400 | ||
e0e30823 | 6401 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
6402 | |
6403 | /* Customize decompression so that color quantization will be used. | |
6404 | Start decompression. */ | |
e0e30823 | 6405 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
6406 | fn_jpeg_start_decompress (&cinfo); |
6407 | width = img->width = cinfo.output_width; | |
6408 | height = img->height = cinfo.output_height; | |
6409 | ||
f1f25b99 CY |
6410 | if (!check_image_size (f, width, height)) |
6411 | { | |
10ea2b82 | 6412 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
af26b72c | 6413 | _longjmp (mgr.setjmp_buffer, 2); |
f1f25b99 CY |
6414 | } |
6415 | ||
4ef0d4d0 KS |
6416 | /* Create X image and pixmap. */ |
6417 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
af26b72c | 6418 | _longjmp (mgr.setjmp_buffer, 2); |
4ef0d4d0 KS |
6419 | |
6420 | /* Allocate colors. When color quantization is used, | |
6421 | cinfo.actual_number_of_colors has been set with the number of | |
6422 | colors generated, and cinfo.colormap is a two-dimensional array | |
6423 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
6424 | No more than 255 colors will be generated. */ | |
6425 | { | |
6426 | int i, ir, ig, ib; | |
6427 | ||
6428 | if (cinfo.out_color_components > 2) | |
6429 | ir = 0, ig = 1, ib = 2; | |
6430 | else if (cinfo.out_color_components > 1) | |
6431 | ir = 0, ig = 1, ib = 0; | |
6432 | else | |
6433 | ir = 0, ig = 0, ib = 0; | |
6434 | ||
6435 | /* Use the color table mechanism because it handles colors that | |
6436 | cannot be allocated nicely. Such colors will be replaced with | |
6437 | a default color, and we don't have to care about which colors | |
6438 | can be freed safely, and which can't. */ | |
6439 | init_color_table (); | |
38182d90 | 6440 | colors = alloca (cinfo.actual_number_of_colors * sizeof *colors); |
4ef0d4d0 KS |
6441 | |
6442 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
6443 | { | |
6444 | /* Multiply RGB values with 255 because X expects RGB values | |
6445 | in the range 0..0xffff. */ | |
6446 | int r = cinfo.colormap[ir][i] << 8; | |
6447 | int g = cinfo.colormap[ig][i] << 8; | |
6448 | int b = cinfo.colormap[ib][i] << 8; | |
6449 | colors[i] = lookup_rgb_color (f, r, g, b); | |
6450 | } | |
6451 | ||
6452 | #ifdef COLOR_TABLE_SUPPORT | |
6453 | /* Remember those colors actually allocated. */ | |
6454 | img->colors = colors_in_color_table (&img->ncolors); | |
6455 | free_color_table (); | |
6456 | #endif /* COLOR_TABLE_SUPPORT */ | |
6457 | } | |
6458 | ||
6459 | /* Read pixels. */ | |
6460 | row_stride = width * cinfo.output_components; | |
6461 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
6462 | row_stride, 1); | |
6463 | for (y = 0; y < height; ++y) | |
6464 | { | |
6465 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
6466 | for (x = 0; x < cinfo.output_width; ++x) | |
6467 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
6468 | } | |
6469 | ||
6470 | /* Clean up. */ | |
6471 | fn_jpeg_finish_decompress (&cinfo); | |
6472 | fn_jpeg_destroy_decompress (&cinfo); | |
6473 | if (fp) | |
6474 | fclose ((FILE *) fp); | |
6475 | ||
6476 | /* Maybe fill in the background field while we have ximg handy. */ | |
6477 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6478 | /* Casting avoids a GCC warning. */ |
6479 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6480 | |
6481 | /* Put the image into the pixmap. */ | |
6482 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6483 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6484 | return 1; |
6485 | } | |
6486 | ||
6487 | #else /* HAVE_JPEG */ | |
6488 | ||
edfda783 AR |
6489 | #ifdef HAVE_NS |
6490 | static int | |
6491 | jpeg_load (struct frame *f, struct image *img) | |
6492 | { | |
ed3751c8 JB |
6493 | return ns_load_image (f, img, |
6494 | image_spec_value (img->spec, QCfile, NULL), | |
6495 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6496 | } |
6497 | #endif /* HAVE_NS */ | |
6498 | ||
4ef0d4d0 KS |
6499 | #endif /* !HAVE_JPEG */ |
6500 | ||
6501 | ||
6502 | \f | |
6503 | /*********************************************************************** | |
6504 | TIFF | |
6505 | ***********************************************************************/ | |
6506 | ||
9e2a2647 | 6507 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6508 | |
f57e2426 J |
6509 | static int tiff_image_p (Lisp_Object object); |
6510 | static int tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6511 | |
6512 | /* The symbol `tiff' identifying images of this type. */ | |
6513 | ||
955cbe7b | 6514 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6515 | |
6516 | /* Indices of image specification fields in tiff_format, below. */ | |
6517 | ||
6518 | enum tiff_keyword_index | |
6519 | { | |
6520 | TIFF_TYPE, | |
6521 | TIFF_DATA, | |
6522 | TIFF_FILE, | |
6523 | TIFF_ASCENT, | |
6524 | TIFF_MARGIN, | |
6525 | TIFF_RELIEF, | |
6526 | TIFF_ALGORITHM, | |
6527 | TIFF_HEURISTIC_MASK, | |
6528 | TIFF_MASK, | |
6529 | TIFF_BACKGROUND, | |
58279503 | 6530 | TIFF_INDEX, |
4ef0d4d0 KS |
6531 | TIFF_LAST |
6532 | }; | |
6533 | ||
6534 | /* Vector of image_keyword structures describing the format | |
6535 | of valid user-defined image specifications. */ | |
6536 | ||
91433552 | 6537 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6538 | { |
6539 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6540 | {":data", IMAGE_STRING_VALUE, 0}, | |
6541 | {":file", IMAGE_STRING_VALUE, 0}, | |
6542 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6543 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6544 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6545 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6546 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6547 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6548 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6549 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6550 | }; |
6551 | ||
6552 | /* Structure describing the image type `tiff'. */ | |
6553 | ||
6554 | static struct image_type tiff_type = | |
6555 | { | |
6556 | &Qtiff, | |
6557 | tiff_image_p, | |
6558 | tiff_load, | |
6559 | x_clear_image, | |
6560 | NULL | |
6561 | }; | |
6562 | ||
6563 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
6564 | ||
6565 | static int | |
d3da34e0 | 6566 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6567 | { |
6568 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6569 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6570 | |
6571 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6572 | return 0; | |
6573 | ||
6574 | /* Must specify either the :data or :file keyword. */ | |
6575 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6576 | } | |
6577 | ||
9e2a2647 | 6578 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6579 | |
6580 | #ifdef HAVE_TIFF | |
6581 | ||
6582 | #include <tiffio.h> | |
6583 | ||
6584 | #ifdef HAVE_NTGUI | |
6585 | ||
6586 | /* TIFF library details. */ | |
14beddf4 CY |
6587 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6588 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6589 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6590 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6591 | TIFFReadWriteProc, TIFFReadWriteProc, |
6592 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6593 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6594 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6595 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6596 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6597 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 KS |
6598 | |
6599 | static int | |
0855eb52 | 6600 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6601 | { |
6602 | HMODULE library; | |
6603 | ||
0855eb52 | 6604 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
6605 | return 0; |
6606 | ||
6607 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6608 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6609 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6610 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6611 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6612 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6613 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6614 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6615 | return 1; |
6616 | } | |
6617 | ||
6618 | #else | |
6619 | ||
6620 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6621 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6622 | #define fn_TIFFOpen TIFFOpen | |
6623 | #define fn_TIFFClientOpen TIFFClientOpen | |
6624 | #define fn_TIFFGetField TIFFGetField | |
6625 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6626 | #define fn_TIFFClose TIFFClose | |
58279503 | 6627 | #define fn_TIFFSetDirectory TIFFSetDirectory |
4ef0d4d0 KS |
6628 | #endif /* HAVE_NTGUI */ |
6629 | ||
6630 | ||
6631 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6632 | memory source, but we have to provide a lot of extra functions. | |
6633 | Blah. | |
6634 | ||
6635 | We really only need to implement read and seek, but I am not | |
6636 | convinced that the TIFF library is smart enough not to destroy | |
6637 | itself if we only hand it the function pointers we need to | |
6638 | override. */ | |
6639 | ||
6640 | typedef struct | |
6641 | { | |
6642 | unsigned char *bytes; | |
3f791afe PE |
6643 | ptrdiff_t len; |
6644 | ptrdiff_t index; | |
4ef0d4d0 KS |
6645 | } |
6646 | tiff_memory_source; | |
6647 | ||
3f791afe | 6648 | static tsize_t |
d3da34e0 | 6649 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6650 | { |
6651 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6652 | ||
3f791afe | 6653 | size = min (size, src->len - src->index); |
72af86bd | 6654 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6655 | src->index += size; |
6656 | return size; | |
6657 | } | |
6658 | ||
3f791afe | 6659 | static tsize_t |
d3da34e0 | 6660 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 | 6661 | { |
3f791afe | 6662 | return -1; |
4ef0d4d0 KS |
6663 | } |
6664 | ||
6665 | static toff_t | |
d3da34e0 | 6666 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6667 | { |
6668 | tiff_memory_source *src = (tiff_memory_source *) data; | |
3f791afe | 6669 | ptrdiff_t idx; |
4ef0d4d0 KS |
6670 | |
6671 | switch (whence) | |
6672 | { | |
6673 | case SEEK_SET: /* Go from beginning of source. */ | |
6674 | idx = off; | |
6675 | break; | |
6676 | ||
6677 | case SEEK_END: /* Go from end of source. */ | |
6678 | idx = src->len + off; | |
6679 | break; | |
6680 | ||
6681 | case SEEK_CUR: /* Go from current position. */ | |
6682 | idx = src->index + off; | |
6683 | break; | |
6684 | ||
6685 | default: /* Invalid `whence'. */ | |
6686 | return -1; | |
6687 | } | |
6688 | ||
6689 | if (idx > src->len || idx < 0) | |
6690 | return -1; | |
6691 | ||
6692 | src->index = idx; | |
6693 | return src->index; | |
6694 | } | |
6695 | ||
6696 | static int | |
d3da34e0 | 6697 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6698 | { |
6699 | /* NOOP */ | |
6700 | return 0; | |
6701 | } | |
6702 | ||
6703 | static int | |
d3da34e0 | 6704 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6705 | { |
6706 | /* It is already _IN_ memory. */ | |
6707 | return 0; | |
6708 | } | |
6709 | ||
6710 | static void | |
d3da34e0 | 6711 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6712 | { |
6713 | /* We don't need to do this. */ | |
6714 | } | |
6715 | ||
6716 | static toff_t | |
d3da34e0 | 6717 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6718 | { |
6719 | return ((tiff_memory_source *) data)->len; | |
6720 | } | |
6721 | ||
b41c3a35 EZ |
6722 | /* GCC 3.x on x86 Windows targets has a bug that triggers an internal |
6723 | compiler error compiling tiff_handler, see Bugzilla bug #17406 | |
6724 | (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17406). Declaring | |
6725 | this function as external works around that problem. */ | |
6726 | #if defined (__MINGW32__) && __GNUC__ == 3 | |
6727 | # define MINGW_STATIC | |
6728 | #else | |
6729 | # define MINGW_STATIC static | |
6730 | #endif | |
4ef0d4d0 | 6731 | |
b41c3a35 EZ |
6732 | MINGW_STATIC void |
6733 | tiff_handler (const char *, const char *, const char *, va_list) | |
13464394 | 6734 | ATTRIBUTE_FORMAT_PRINTF (3, 0); |
b41c3a35 | 6735 | MINGW_STATIC void |
13464394 PE |
6736 | tiff_handler (const char *log_format, const char *title, |
6737 | const char *format, va_list ap) | |
6738 | { | |
6739 | /* doprnt is not suitable here, as TIFF handlers are called from | |
6740 | libtiff and are passed arbitrary printf directives. Instead, use | |
6741 | vsnprintf, taking care to be portable to nonstandard environments | |
6742 | where vsnprintf returns -1 on buffer overflow. Since it's just a | |
6743 | log entry, it's OK to truncate it. */ | |
6744 | char buf[4000]; | |
6745 | int len = vsnprintf (buf, sizeof buf, format, ap); | |
6746 | add_to_log (log_format, build_string (title), | |
6747 | make_string (buf, max (0, min (len, sizeof buf - 1)))); | |
6748 | } | |
b41c3a35 | 6749 | #undef MINGW_STATIC |
13464394 | 6750 | |
5e2d4a30 PE |
6751 | static void tiff_error_handler (const char *, const char *, va_list) |
6752 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6753 | static void |
d3da34e0 | 6754 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6755 | { |
13464394 | 6756 | tiff_handler ("TIFF error: %s %s", title, format, ap); |
4ef0d4d0 KS |
6757 | } |
6758 | ||
6759 | ||
5e2d4a30 PE |
6760 | static void tiff_warning_handler (const char *, const char *, va_list) |
6761 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6762 | static void |
d3da34e0 | 6763 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6764 | { |
13464394 | 6765 | tiff_handler ("TIFF warning: %s %s", title, format, ap); |
4ef0d4d0 KS |
6766 | } |
6767 | ||
6768 | ||
6769 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
6770 | successful. */ | |
6771 | ||
6772 | static int | |
d3da34e0 | 6773 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6774 | { |
6775 | Lisp_Object file, specified_file; | |
6776 | Lisp_Object specified_data; | |
6777 | TIFF *tiff; | |
58279503 | 6778 | int width, height, x, y, count; |
4ef0d4d0 | 6779 | uint32 *buf; |
03d0a109 | 6780 | int rc; |
4ef0d4d0 | 6781 | XImagePtr ximg; |
4ef0d4d0 | 6782 | tiff_memory_source memsrc; |
58279503 | 6783 | Lisp_Object image; |
4ef0d4d0 KS |
6784 | |
6785 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6786 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6787 | |
5e2d4a30 PE |
6788 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6789 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6790 | |
6791 | if (NILP (specified_data)) | |
6792 | { | |
6793 | /* Read from a file */ | |
6794 | file = x_find_image_file (specified_file); | |
6795 | if (!STRINGP (file)) | |
6796 | { | |
6797 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6798 | return 0; |
6799 | } | |
6800 | ||
df61c790 | 6801 | /* Try to open the image file. */ |
b19beacc | 6802 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6803 | if (tiff == NULL) |
6804 | { | |
6805 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6806 | return 0; |
6807 | } | |
6808 | } | |
6809 | else | |
6810 | { | |
7574650a AS |
6811 | if (!STRINGP (specified_data)) |
6812 | { | |
6813 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6814 | return 0; | |
6815 | } | |
6816 | ||
4ef0d4d0 KS |
6817 | /* Memory source! */ |
6818 | memsrc.bytes = SDATA (specified_data); | |
6819 | memsrc.len = SBYTES (specified_data); | |
6820 | memsrc.index = 0; | |
6821 | ||
3082f617 | 6822 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
3f791afe PE |
6823 | tiff_read_from_memory, |
6824 | tiff_write_from_memory, | |
df61c790 AS |
6825 | tiff_seek_in_memory, |
6826 | tiff_close_memory, | |
6827 | tiff_size_of_memory, | |
6828 | tiff_mmap_memory, | |
6829 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6830 | |
6831 | if (!tiff) | |
6832 | { | |
6833 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6834 | return 0; |
6835 | } | |
6836 | } | |
6837 | ||
58279503 JR |
6838 | image = image_spec_value (img->spec, QCindex, NULL); |
6839 | if (INTEGERP (image)) | |
6840 | { | |
13464394 PE |
6841 | EMACS_INT ino = XFASTINT (image); |
6842 | if (! (TYPE_MINIMUM (tdir_t) <= ino && ino <= TYPE_MAXIMUM (tdir_t) | |
6843 | && fn_TIFFSetDirectory (tiff, ino))) | |
58279503 JR |
6844 | { |
6845 | image_error ("Invalid image number `%s' in image `%s'", | |
6846 | image, img->spec); | |
6847 | fn_TIFFClose (tiff); | |
58279503 JR |
6848 | return 0; |
6849 | } | |
6850 | } | |
6851 | ||
4ef0d4d0 KS |
6852 | /* Get width and height of the image, and allocate a raster buffer |
6853 | of width x height 32-bit values. */ | |
6854 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6855 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6856 | |
6857 | if (!check_image_size (f, width, height)) | |
6858 | { | |
10ea2b82 | 6859 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6860 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6861 | return 0; |
6862 | } | |
6863 | ||
ca4aa935 PE |
6864 | /* Create the X image and pixmap. */ |
6865 | if (! (height <= min (PTRDIFF_MAX, SIZE_MAX) / sizeof *buf / width | |
6866 | && x_create_x_image_and_pixmap (f, width, height, 0, | |
6867 | &ximg, &img->pixmap))) | |
6868 | { | |
6869 | fn_TIFFClose (tiff); | |
6870 | return 0; | |
6871 | } | |
6872 | ||
23f86fce | 6873 | buf = xmalloc (sizeof *buf * width * height); |
4ef0d4d0 KS |
6874 | |
6875 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6876 | |
6877 | /* Count the number of images in the file. */ | |
03d0a109 PE |
6878 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
6879 | continue; | |
58279503 JR |
6880 | |
6881 | if (count > 1) | |
b50691aa CY |
6882 | img->lisp_data = Fcons (Qcount, |
6883 | Fcons (make_number (count), | |
6884 | img->lisp_data)); | |
58279503 | 6885 | |
4ef0d4d0 KS |
6886 | fn_TIFFClose (tiff); |
6887 | if (!rc) | |
6888 | { | |
6889 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6890 | xfree (buf); | |
4ef0d4d0 KS |
6891 | return 0; |
6892 | } | |
6893 | ||
4ef0d4d0 KS |
6894 | /* Initialize the color table. */ |
6895 | init_color_table (); | |
6896 | ||
6897 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6898 | for (y = 0; y < height; ++y) | |
6899 | { | |
6900 | uint32 *row = buf + y * width; | |
6901 | ||
6902 | for (x = 0; x < width; ++x) | |
6903 | { | |
6904 | uint32 abgr = row[x]; | |
6905 | int r = TIFFGetR (abgr) << 8; | |
6906 | int g = TIFFGetG (abgr) << 8; | |
6907 | int b = TIFFGetB (abgr) << 8; | |
6908 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6909 | } | |
6910 | } | |
6911 | ||
6912 | #ifdef COLOR_TABLE_SUPPORT | |
6913 | /* Remember the colors allocated for the image. Free the color table. */ | |
6914 | img->colors = colors_in_color_table (&img->ncolors); | |
6915 | free_color_table (); | |
6916 | #endif /* COLOR_TABLE_SUPPORT */ | |
6917 | ||
6918 | img->width = width; | |
6919 | img->height = height; | |
6920 | ||
6921 | /* Maybe fill in the background field while we have ximg handy. */ | |
6922 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6923 | /* Casting avoids a GCC warning on W32. */ |
6924 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6925 | |
6926 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6927 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6928 | x_destroy_x_image (ximg); | |
6929 | xfree (buf); | |
6930 | ||
4ef0d4d0 KS |
6931 | return 1; |
6932 | } | |
6933 | ||
6934 | #else /* HAVE_TIFF */ | |
6935 | ||
edfda783 AR |
6936 | #ifdef HAVE_NS |
6937 | static int | |
6938 | tiff_load (struct frame *f, struct image *img) | |
6939 | { | |
ed3751c8 JB |
6940 | return ns_load_image (f, img, |
6941 | image_spec_value (img->spec, QCfile, NULL), | |
6942 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6943 | } |
6944 | #endif /* HAVE_NS */ | |
6945 | ||
4ef0d4d0 KS |
6946 | #endif /* !HAVE_TIFF */ |
6947 | ||
6948 | ||
6949 | \f | |
6950 | /*********************************************************************** | |
6951 | GIF | |
6952 | ***********************************************************************/ | |
6953 | ||
9e2a2647 | 6954 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 6955 | |
f57e2426 J |
6956 | static int gif_image_p (Lisp_Object object); |
6957 | static int gif_load (struct frame *f, struct image *img); | |
6958 | static void gif_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6959 | |
6960 | /* The symbol `gif' identifying images of this type. */ | |
6961 | ||
955cbe7b | 6962 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
6963 | |
6964 | /* Indices of image specification fields in gif_format, below. */ | |
6965 | ||
6966 | enum gif_keyword_index | |
6967 | { | |
6968 | GIF_TYPE, | |
6969 | GIF_DATA, | |
6970 | GIF_FILE, | |
6971 | GIF_ASCENT, | |
6972 | GIF_MARGIN, | |
6973 | GIF_RELIEF, | |
6974 | GIF_ALGORITHM, | |
6975 | GIF_HEURISTIC_MASK, | |
6976 | GIF_MASK, | |
6977 | GIF_IMAGE, | |
6978 | GIF_BACKGROUND, | |
6979 | GIF_LAST | |
6980 | }; | |
6981 | ||
6982 | /* Vector of image_keyword structures describing the format | |
6983 | of valid user-defined image specifications. */ | |
6984 | ||
91433552 | 6985 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
6986 | { |
6987 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6988 | {":data", IMAGE_STRING_VALUE, 0}, | |
6989 | {":file", IMAGE_STRING_VALUE, 0}, | |
6990 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6991 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6992 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6993 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6994 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6995 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 6996 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
6997 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
6998 | }; | |
6999 | ||
7000 | /* Structure describing the image type `gif'. */ | |
7001 | ||
7002 | static struct image_type gif_type = | |
7003 | { | |
7004 | &Qgif, | |
7005 | gif_image_p, | |
7006 | gif_load, | |
6ac3c7bb | 7007 | gif_clear_image, |
4ef0d4d0 KS |
7008 | NULL |
7009 | }; | |
7010 | ||
6ac3c7bb KS |
7011 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7012 | ||
7013 | static void | |
d3da34e0 | 7014 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 7015 | { |
b50691aa | 7016 | img->lisp_data = Qnil; |
6ac3c7bb KS |
7017 | x_clear_image (f, img); |
7018 | } | |
7019 | ||
4ef0d4d0 KS |
7020 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
7021 | ||
7022 | static int | |
d3da34e0 | 7023 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
7024 | { |
7025 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 7026 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7027 | |
7028 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7029 | return 0; | |
7030 | ||
7031 | /* Must specify either the :data or :file keyword. */ | |
7032 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7033 | } | |
7034 | ||
9e2a2647 | 7035 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7036 | |
7037 | #ifdef HAVE_GIF | |
7038 | ||
9e2a2647 | 7039 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
7040 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7041 | Undefine before redefining to avoid a preprocessor warning. */ | |
7042 | #ifdef DrawText | |
7043 | #undef DrawText | |
7044 | #endif | |
4ef0d4d0 KS |
7045 | /* avoid conflict with QuickdrawText.h */ |
7046 | #define DrawText gif_DrawText | |
7047 | #include <gif_lib.h> | |
7048 | #undef DrawText | |
7049 | ||
9e2a2647 | 7050 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7051 | |
7052 | #include <gif_lib.h> | |
7053 | ||
9e2a2647 | 7054 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7055 | |
7056 | ||
7057 | #ifdef HAVE_NTGUI | |
7058 | ||
7059 | /* GIF library details. */ | |
14beddf4 CY |
7060 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7061 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7062 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7063 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 KS |
7064 | |
7065 | static int | |
0855eb52 | 7066 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7067 | { |
7068 | HMODULE library; | |
7069 | ||
0855eb52 | 7070 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7071 | return 0; |
7072 | ||
7073 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7074 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7075 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7076 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7077 | return 1; | |
7078 | } | |
7079 | ||
7080 | #else | |
7081 | ||
7082 | #define fn_DGifCloseFile DGifCloseFile | |
7083 | #define fn_DGifSlurp DGifSlurp | |
7084 | #define fn_DGifOpen DGifOpen | |
7085 | #define fn_DGifOpenFileName DGifOpenFileName | |
7086 | ||
7087 | #endif /* HAVE_NTGUI */ | |
7088 | ||
7089 | /* Reading a GIF image from memory | |
7090 | Based on the PNG memory stuff to a certain extent. */ | |
7091 | ||
7092 | typedef struct | |
7093 | { | |
7094 | unsigned char *bytes; | |
3f791afe PE |
7095 | ptrdiff_t len; |
7096 | ptrdiff_t index; | |
4ef0d4d0 KS |
7097 | } |
7098 | gif_memory_source; | |
7099 | ||
7100 | /* Make the current memory source available to gif_read_from_memory. | |
7101 | It's done this way because not all versions of libungif support | |
7102 | a UserData field in the GifFileType structure. */ | |
7103 | static gif_memory_source *current_gif_memory_src; | |
7104 | ||
7105 | static int | |
d3da34e0 | 7106 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7107 | { |
7108 | gif_memory_source *src = current_gif_memory_src; | |
7109 | ||
7110 | if (len > src->len - src->index) | |
7111 | return -1; | |
7112 | ||
72af86bd | 7113 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7114 | src->index += len; |
7115 | return len; | |
7116 | } | |
7117 | ||
7118 | ||
7119 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7120 | successful. */ | |
7121 | ||
91433552 DN |
7122 | static const int interlace_start[] = {0, 4, 2, 1}; |
7123 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7124 | |
17c0c952 JD |
7125 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7126 | ||
4ef0d4d0 | 7127 | static int |
d3da34e0 | 7128 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 | 7129 | { |
60002bf5 CY |
7130 | Lisp_Object file; |
7131 | int rc, width, height, x, y, i, j; | |
4ef0d4d0 KS |
7132 | XImagePtr ximg; |
7133 | ColorMapObject *gif_color_map; | |
7134 | unsigned long pixel_colors[256]; | |
7135 | GifFileType *gif; | |
4ef0d4d0 | 7136 | gif_memory_source memsrc; |
60002bf5 CY |
7137 | Lisp_Object specified_bg = image_spec_value (img->spec, QCbackground, NULL); |
7138 | Lisp_Object specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7139 | Lisp_Object specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7140 | unsigned long bgcolor = 0; | |
13464394 | 7141 | EMACS_INT idx; |
4ef0d4d0 KS |
7142 | |
7143 | if (NILP (specified_data)) | |
7144 | { | |
7145 | file = x_find_image_file (specified_file); | |
7146 | if (!STRINGP (file)) | |
7147 | { | |
7148 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7149 | return 0; |
7150 | } | |
7151 | ||
df61c790 | 7152 | /* Open the GIF file. */ |
2037898d | 7153 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7154 | if (gif == NULL) |
7155 | { | |
7156 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7157 | return 0; |
7158 | } | |
7159 | } | |
7160 | else | |
7161 | { | |
7574650a AS |
7162 | if (!STRINGP (specified_data)) |
7163 | { | |
7164 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7165 | return 0; | |
7166 | } | |
7167 | ||
4ef0d4d0 KS |
7168 | /* Read from memory! */ |
7169 | current_gif_memory_src = &memsrc; | |
7170 | memsrc.bytes = SDATA (specified_data); | |
7171 | memsrc.len = SBYTES (specified_data); | |
7172 | memsrc.index = 0; | |
7173 | ||
df61c790 | 7174 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7175 | if (!gif) |
7176 | { | |
7177 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7178 | return 0; |
7179 | } | |
7180 | } | |
7181 | ||
f1f25b99 CY |
7182 | /* Before reading entire contents, check the declared image size. */ |
7183 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7184 | { | |
10ea2b82 | 7185 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7186 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7187 | return 0; |
7188 | } | |
7189 | ||
4ef0d4d0 KS |
7190 | /* Read entire contents. */ |
7191 | rc = fn_DGifSlurp (gif); | |
60002bf5 | 7192 | if (rc == GIF_ERROR || gif->ImageCount <= 0) |
4ef0d4d0 KS |
7193 | { |
7194 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7195 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7196 | return 0; |
7197 | } | |
7198 | ||
60002bf5 CY |
7199 | /* Which sub-image are we to display? */ |
7200 | { | |
33290528 PE |
7201 | Lisp_Object image_number = image_spec_value (img->spec, QCindex, NULL); |
7202 | idx = INTEGERP (image_number) ? XFASTINT (image_number) : 0; | |
60002bf5 | 7203 | if (idx < 0 || idx >= gif->ImageCount) |
17c0c952 | 7204 | { |
60002bf5 | 7205 | image_error ("Invalid image number `%s' in image `%s'", |
33290528 | 7206 | image_number, img->spec); |
60002bf5 CY |
7207 | fn_DGifCloseFile (gif); |
7208 | return 0; | |
17c0c952 | 7209 | } |
60002bf5 | 7210 | } |
17c0c952 | 7211 | |
e013fb34 CY |
7212 | width = img->width = gif->SWidth; |
7213 | height = img->height = gif->SHeight; | |
0f4aca46 | 7214 | |
e013fb34 CY |
7215 | img->corners[TOP_CORNER] = gif->SavedImages[0].ImageDesc.Top; |
7216 | img->corners[LEFT_CORNER] = gif->SavedImages[0].ImageDesc.Left; | |
8d903f4e AS |
7217 | img->corners[BOT_CORNER] |
7218 | = img->corners[TOP_CORNER] + gif->SavedImages[0].ImageDesc.Height; | |
7219 | img->corners[RIGHT_CORNER] | |
7220 | = img->corners[LEFT_CORNER] + gif->SavedImages[0].ImageDesc.Width; | |
4ef0d4d0 | 7221 | |
f1f25b99 CY |
7222 | if (!check_image_size (f, width, height)) |
7223 | { | |
10ea2b82 | 7224 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7225 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7226 | return 0; |
7227 | } | |
7228 | ||
4ef0d4d0 KS |
7229 | /* Create the X image and pixmap. */ |
7230 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7231 | { | |
7232 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7233 | return 0; |
7234 | } | |
7235 | ||
60002bf5 CY |
7236 | /* Clear the part of the screen image not covered by the image. |
7237 | Full animated GIF support requires more here (see the gif89 spec, | |
7238 | disposal methods). Let's simply assume that the part not covered | |
7239 | by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7240 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7241 | for (x = 0; x < width; ++x) |
7242 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7243 | ||
6ac3c7bb | 7244 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7245 | for (x = 0; x < width; ++x) |
7246 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7247 | ||
6ac3c7bb | 7248 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7249 | { |
6ac3c7bb | 7250 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7251 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7252 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7253 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7254 | } | |
7255 | ||
60002bf5 | 7256 | /* Read the GIF image into the X image. */ |
4ef0d4d0 | 7257 | |
60002bf5 CY |
7258 | /* FIXME: With the current implementation, loading an animated gif |
7259 | is quadratic in the number of animation frames, since each frame | |
7260 | is a separate struct image. We must provide a way for a single | |
7261 | gif_load call to construct and save all animation frames. */ | |
4ef0d4d0 | 7262 | |
60002bf5 CY |
7263 | init_color_table (); |
7264 | if (STRINGP (specified_bg)) | |
7265 | bgcolor = x_alloc_image_color (f, img, specified_bg, | |
7266 | FRAME_BACKGROUND_PIXEL (f)); | |
7267 | for (j = 0; j <= idx; ++j) | |
7268 | { | |
7269 | /* We use a local variable `raster' here because RasterBits is a | |
7270 | char *, which invites problems with bytes >= 0x80. */ | |
7271 | struct SavedImage *subimage = gif->SavedImages + j; | |
7272 | unsigned char *raster = (unsigned char *) subimage->RasterBits; | |
7273 | int transparency_color_index = -1; | |
7274 | int disposal = 0; | |
e013fb34 CY |
7275 | int subimg_width = subimage->ImageDesc.Width; |
7276 | int subimg_height = subimage->ImageDesc.Height; | |
7277 | int subimg_top = subimage->ImageDesc.Top; | |
7278 | int subimg_left = subimage->ImageDesc.Left; | |
60002bf5 CY |
7279 | |
7280 | /* Find the Graphic Control Extension block for this sub-image. | |
7281 | Extract the disposal method and transparency color. */ | |
7282 | for (i = 0; i < subimage->ExtensionBlockCount; i++) | |
4ef0d4d0 | 7283 | { |
60002bf5 | 7284 | ExtensionBlock *extblock = subimage->ExtensionBlocks + i; |
4ef0d4d0 | 7285 | |
60002bf5 CY |
7286 | if ((extblock->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION) |
7287 | && extblock->ByteCount == 4 | |
7288 | && extblock->Bytes[0] & 1) | |
4ef0d4d0 | 7289 | { |
60002bf5 CY |
7290 | /* From gif89a spec: 1 = "keep in place", 2 = "restore |
7291 | to background". Treat any other value like 2. */ | |
7292 | disposal = (extblock->Bytes[0] >> 2) & 7; | |
2547adb1 | 7293 | transparency_color_index = (unsigned char) extblock->Bytes[3]; |
60002bf5 | 7294 | break; |
4ef0d4d0 | 7295 | } |
4ef0d4d0 | 7296 | } |
60002bf5 CY |
7297 | |
7298 | /* We can't "keep in place" the first subimage. */ | |
7299 | if (j == 0) | |
7300 | disposal = 2; | |
7301 | ||
e013fb34 CY |
7302 | /* For disposal == 0, the spec says "No disposal specified. The |
7303 | decoder is not required to take any action." In practice, it | |
7304 | seems we need to treat this like "keep in place", see e.g. | |
7305 | http://upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif */ | |
7306 | if (disposal == 0) | |
7307 | disposal = 1; | |
7308 | ||
60002bf5 CY |
7309 | /* Allocate subimage colors. */ |
7310 | memset (pixel_colors, 0, sizeof pixel_colors); | |
7311 | gif_color_map = subimage->ImageDesc.ColorMap; | |
7312 | if (!gif_color_map) | |
7313 | gif_color_map = gif->SColorMap; | |
7314 | ||
7315 | if (gif_color_map) | |
7316 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
4ef0d4d0 | 7317 | { |
60002bf5 CY |
7318 | if (transparency_color_index == i) |
7319 | pixel_colors[i] = STRINGP (specified_bg) | |
7320 | ? bgcolor : FRAME_BACKGROUND_PIXEL (f); | |
7321 | else | |
7322 | { | |
7323 | int r = gif_color_map->Colors[i].Red << 8; | |
7324 | int g = gif_color_map->Colors[i].Green << 8; | |
7325 | int b = gif_color_map->Colors[i].Blue << 8; | |
7326 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7327 | } | |
4ef0d4d0 | 7328 | } |
60002bf5 CY |
7329 | |
7330 | /* Apply the pixel values. */ | |
7331 | if (gif->SavedImages[j].ImageDesc.Interlace) | |
7332 | { | |
7333 | int row, pass; | |
7334 | ||
7335 | for (y = 0, row = interlace_start[0], pass = 0; | |
e013fb34 | 7336 | y < subimg_height; |
60002bf5 CY |
7337 | y++, row += interlace_increment[pass]) |
7338 | { | |
e013fb34 | 7339 | if (row >= subimg_height) |
60002bf5 CY |
7340 | { |
7341 | row = interlace_start[++pass]; | |
e013fb34 | 7342 | while (row >= subimg_height) |
60002bf5 CY |
7343 | row = interlace_start[++pass]; |
7344 | } | |
7345 | ||
e013fb34 | 7346 | for (x = 0; x < subimg_width; x++) |
60002bf5 | 7347 | { |
e013fb34 | 7348 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7349 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7350 | XPutPixel (ximg, x + subimg_left, row + subimg_top, |
7351 | pixel_colors[c]); | |
60002bf5 CY |
7352 | } |
7353 | } | |
7354 | } | |
7355 | else | |
7356 | { | |
e013fb34 CY |
7357 | for (y = 0; y < subimg_height; ++y) |
7358 | for (x = 0; x < subimg_width; ++x) | |
60002bf5 | 7359 | { |
e013fb34 | 7360 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7361 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7362 | XPutPixel (ximg, x + subimg_left, y + subimg_top, |
7363 | pixel_colors[c]); | |
60002bf5 CY |
7364 | } |
7365 | } | |
4ef0d4d0 KS |
7366 | } |
7367 | ||
60002bf5 CY |
7368 | #ifdef COLOR_TABLE_SUPPORT |
7369 | img->colors = colors_in_color_table (&img->ncolors); | |
7370 | free_color_table (); | |
7371 | #endif /* COLOR_TABLE_SUPPORT */ | |
7372 | ||
1546c559 JL |
7373 | /* Save GIF image extension data for `image-metadata'. |
7374 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
b50691aa | 7375 | img->lisp_data = Qnil; |
60002bf5 | 7376 | if (gif->SavedImages[idx].ExtensionBlockCount > 0) |
6ac3c7bb | 7377 | { |
13464394 | 7378 | int delay = 0; |
60002bf5 CY |
7379 | ExtensionBlock *ext = gif->SavedImages[idx].ExtensionBlocks; |
7380 | for (i = 0; i < gif->SavedImages[idx].ExtensionBlockCount; i++, ext++) | |
6ac3c7bb | 7381 | /* Append (... FUNCTION "BYTES") */ |
1100a63c CY |
7382 | { |
7383 | img->lisp_data | |
7384 | = Fcons (make_number (ext->Function), | |
7385 | Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7386 | img->lisp_data)); | |
7387 | if (ext->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION | |
7388 | && ext->ByteCount == 4) | |
7389 | { | |
7390 | delay = ext->Bytes[2] << CHAR_BIT; | |
7391 | delay |= ext->Bytes[1]; | |
7392 | } | |
7393 | } | |
b50691aa | 7394 | img->lisp_data = Fcons (Qextension_data, |
1100a63c CY |
7395 | Fcons (img->lisp_data, Qnil)); |
7396 | if (delay) | |
7397 | img->lisp_data | |
7398 | = Fcons (Qdelay, | |
13464394 | 7399 | Fcons (make_float (delay / 100.0), |
1100a63c | 7400 | img->lisp_data)); |
6ac3c7bb | 7401 | } |
1100a63c | 7402 | |
6ac3c7bb | 7403 | if (gif->ImageCount > 1) |
b50691aa CY |
7404 | img->lisp_data = Fcons (Qcount, |
7405 | Fcons (make_number (gif->ImageCount), | |
7406 | img->lisp_data)); | |
6ac3c7bb | 7407 | |
4ef0d4d0 KS |
7408 | fn_DGifCloseFile (gif); |
7409 | ||
7410 | /* Maybe fill in the background field while we have ximg handy. */ | |
7411 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7412 | /* Casting avoids a GCC warning. */ |
7413 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7414 | |
7415 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7416 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7417 | x_destroy_x_image (ximg); | |
7418 | ||
4ef0d4d0 KS |
7419 | return 1; |
7420 | } | |
7421 | ||
2e09fef1 | 7422 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7423 | |
edfda783 AR |
7424 | #ifdef HAVE_NS |
7425 | static int | |
7426 | gif_load (struct frame *f, struct image *img) | |
7427 | { | |
ed3751c8 JB |
7428 | return ns_load_image (f, img, |
7429 | image_spec_value (img->spec, QCfile, NULL), | |
7430 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7431 | } |
7432 | #endif /* HAVE_NS */ | |
7433 | ||
4ef0d4d0 KS |
7434 | #endif /* HAVE_GIF */ |
7435 | ||
7436 | ||
3de25479 | 7437 | /*********************************************************************** |
a32d4040 | 7438 | ImageMagick |
4917006b | 7439 | ***********************************************************************/ |
3de25479 | 7440 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 | 7441 | |
4b66faf3 | 7442 | static Lisp_Object Qimagemagick; |
a32d4040 | 7443 | |
d66c4c7c CY |
7444 | static int imagemagick_image_p (Lisp_Object); |
7445 | static int imagemagick_load (struct frame *, struct image *); | |
7446 | static void imagemagick_clear_image (struct frame *, struct image *); | |
7447 | ||
a32d4040 | 7448 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7449 | |
7450 | enum imagemagick_keyword_index | |
4917006b JV |
7451 | { |
7452 | IMAGEMAGICK_TYPE, | |
7453 | IMAGEMAGICK_DATA, | |
7454 | IMAGEMAGICK_FILE, | |
7455 | IMAGEMAGICK_ASCENT, | |
7456 | IMAGEMAGICK_MARGIN, | |
7457 | IMAGEMAGICK_RELIEF, | |
7458 | IMAGEMAGICK_ALGORITHM, | |
7459 | IMAGEMAGICK_HEURISTIC_MASK, | |
7460 | IMAGEMAGICK_MASK, | |
7461 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7462 | IMAGEMAGICK_HEIGHT, |
7463 | IMAGEMAGICK_WIDTH, | |
7464 | IMAGEMAGICK_ROTATION, | |
7465 | IMAGEMAGICK_CROP, | |
4917006b JV |
7466 | IMAGEMAGICK_LAST |
7467 | }; | |
3de25479 JV |
7468 | |
7469 | /* Vector of image_keyword structures describing the format | |
7470 | of valid user-defined image specifications. */ | |
7471 | ||
7472 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7473 | { |
7474 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7475 | {":data", IMAGE_STRING_VALUE, 0}, | |
7476 | {":file", IMAGE_STRING_VALUE, 0}, | |
7477 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7478 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4917006b JV |
7479 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7480 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7481 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7482 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7483 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7484 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7485 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7486 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7487 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7488 | }; |
a32d4040 | 7489 | |
d66c4c7c CY |
7490 | /* Structure describing the image type for any image handled via |
7491 | ImageMagick. */ | |
7492 | ||
7493 | static struct image_type imagemagick_type = | |
7494 | { | |
7495 | &Qimagemagick, | |
7496 | imagemagick_image_p, | |
7497 | imagemagick_load, | |
7498 | imagemagick_clear_image, | |
7499 | NULL | |
7500 | }; | |
7501 | ||
3de25479 JV |
7502 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7503 | ||
7504 | static void | |
4917006b JV |
7505 | imagemagick_clear_image (struct frame *f, |
7506 | struct image *img) | |
3de25479 | 7507 | { |
3de25479 JV |
7508 | x_clear_image (f, img); |
7509 | } | |
7510 | ||
3de25479 JV |
7511 | /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do |
7512 | this by calling parse_image_spec and supplying the keywords that | |
7513 | identify the IMAGEMAGICK format. */ | |
7514 | ||
7515 | static int | |
4917006b | 7516 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7517 | { |
7518 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7519 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7520 | |
7521 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7522 | return 0; | |
7523 | ||
7524 | /* Must specify either the :data or :file keyword. */ | |
7525 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7526 | } | |
7527 | ||
7528 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
c7015153 | 7529 | Therefore rename the function so it doesn't collide with ImageMagick. */ |
3de25479 JV |
7530 | #define DrawRectangle DrawRectangleGif |
7531 | #include <wand/MagickWand.h> | |
7532 | ||
60737f02 PE |
7533 | /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason. |
7534 | Emacs seems to work fine with the hidden version, so unhide it. */ | |
7535 | #include <magick/version.h> | |
7536 | #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665 | |
7537 | extern WandExport void PixelGetMagickColor (const PixelWand *, | |
7538 | MagickPixelPacket *); | |
7539 | #endif | |
7540 | ||
d1d7b339 JL |
7541 | /* Log ImageMagick error message. |
7542 | Useful when a ImageMagick function returns the status `MagickFalse'. */ | |
7543 | ||
7544 | static void | |
7545 | imagemagick_error (MagickWand *wand) | |
7546 | { | |
7547 | char *description; | |
7548 | ExceptionType severity; | |
7549 | ||
7550 | description = MagickGetException (wand, &severity); | |
7551 | image_error ("ImageMagick error: %s", | |
1130ecfc | 7552 | build_string (description), |
d1d7b339 JL |
7553 | Qnil); |
7554 | description = (char *) MagickRelinquishMemory (description); | |
7555 | } | |
7556 | ||
d66c4c7c CY |
7557 | /* Helper function for imagemagick_load, which does the actual loading |
7558 | given contents and size, apart from frame and image structures, | |
7559 | passed from imagemagick_load. Uses librimagemagick to do most of | |
7560 | the image processing. | |
3de25479 | 7561 | |
d66c4c7c CY |
7562 | F is a pointer to the Emacs frame; IMG to the image structure to |
7563 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
7564 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
7565 | either the file name or the image data. | |
3de25479 | 7566 | |
d66c4c7c | 7567 | Return non-zero if successful. */ |
3de25479 JV |
7568 | |
7569 | static int | |
d66c4c7c CY |
7570 | imagemagick_load_image (struct frame *f, struct image *img, |
7571 | unsigned char *contents, unsigned int size, | |
33290528 | 7572 | char *filename) |
3de25479 | 7573 | { |
1b9b4cf4 | 7574 | size_t width, height; |
d66c4c7c | 7575 | MagickBooleanType status; |
3de25479 | 7576 | XImagePtr ximg; |
1b9b4cf4 CY |
7577 | int x, y; |
7578 | MagickWand *image_wand; | |
7579 | MagickWand *ping_wand; | |
3de25479 | 7580 | PixelIterator *iterator; |
1b9b4cf4 | 7581 | PixelWand **pixels, *bg_wand = NULL; |
3de25479 | 7582 | MagickPixelPacket pixel; |
4917006b | 7583 | Lisp_Object image; |
7574650a | 7584 | Lisp_Object value; |
33290528 | 7585 | Lisp_Object crop; |
13464394 | 7586 | EMACS_INT ino; |
4917006b JV |
7587 | int desired_width, desired_height; |
7588 | double rotation; | |
7574650a | 7589 | int pixelwidth; |
7574650a | 7590 | |
a32d4040 CY |
7591 | /* Handle image index for image types who can contain more than one image. |
7592 | Interface :index is same as for GIF. First we "ping" the image to see how | |
7593 | many sub-images it contains. Pinging is faster than loading the image to | |
7594 | find out things about it. */ | |
f853f599 | 7595 | |
a32d4040 | 7596 | /* Initialize the imagemagick environment. */ |
f853f599 | 7597 | MagickWandGenesis (); |
3de25479 JV |
7598 | image = image_spec_value (img->spec, QCindex, NULL); |
7599 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a | 7600 | ping_wand = NewMagickWand (); |
d1d7b339 | 7601 | /* MagickSetResolution (ping_wand, 2, 2); (Bug#10112) */ |
fa4fdb5c | 7602 | |
1b9b4cf4 CY |
7603 | status = filename |
7604 | ? MagickPingImage (ping_wand, filename) | |
7605 | : MagickPingImageBlob (ping_wand, contents, size); | |
7574650a | 7606 | |
d1d7b339 JL |
7607 | if (status == MagickFalse) |
7608 | { | |
7609 | imagemagick_error (ping_wand); | |
7610 | DestroyMagickWand (ping_wand); | |
7611 | return 0; | |
7612 | } | |
fa4fdb5c | 7613 | |
1b9b4cf4 | 7614 | if (ino < 0 || ino >= MagickGetNumberImages (ping_wand)) |
7574650a AS |
7615 | { |
7616 | image_error ("Invalid image number `%s' in image `%s'", | |
7617 | image, img->spec); | |
7618 | DestroyMagickWand (ping_wand); | |
7619 | return 0; | |
f3700365 | 7620 | } |
431dab04 | 7621 | |
5e617bc2 | 7622 | if (MagickGetNumberImages (ping_wand) > 1) |
b50691aa | 7623 | img->lisp_data = |
d2a2d277 | 7624 | Fcons (Qcount, |
7574650a | 7625 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
b50691aa | 7626 | img->lisp_data)); |
f3700365 JV |
7627 | |
7628 | DestroyMagickWand (ping_wand); | |
f853f599 | 7629 | |
d66c4c7c | 7630 | /* Now we know how many images are inside the file. If it's not a |
1b9b4cf4 | 7631 | bundle, the number is one. Load the image data. */ |
f3700365 | 7632 | |
1b9b4cf4 | 7633 | image_wand = NewMagickWand (); |
f3700365 | 7634 | |
1b9b4cf4 CY |
7635 | if ((filename |
7636 | ? MagickReadImage (image_wand, filename) | |
7637 | : MagickReadImageBlob (image_wand, contents, size)) | |
7638 | == MagickFalse) | |
f3700365 | 7639 | { |
1b9b4cf4 CY |
7640 | imagemagick_error (image_wand); |
7641 | goto imagemagick_error; | |
f3700365 | 7642 | } |
f853f599 | 7643 | |
1b9b4cf4 CY |
7644 | /* Retrieve the frame's background color, for use later. */ |
7645 | { | |
7646 | XColor bgcolor; | |
7647 | Lisp_Object specified_bg; | |
7648 | ||
7649 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
7650 | if (!STRINGP (specified_bg) | |
7651 | || !x_defined_color (f, SSDATA (specified_bg), &bgcolor, 0)) | |
7652 | { | |
7653 | #ifndef HAVE_NS | |
7654 | bgcolor.pixel = FRAME_BACKGROUND_PIXEL (f); | |
7655 | x_query_color (f, &bgcolor); | |
7656 | #else | |
7657 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &bgcolor, 1); | |
7658 | #endif | |
7659 | } | |
7660 | ||
7661 | bg_wand = NewPixelWand (); | |
7662 | PixelSetRed (bg_wand, (double) bgcolor.red / 65535); | |
7663 | PixelSetGreen (bg_wand, (double) bgcolor.green / 65535); | |
7664 | PixelSetBlue (bg_wand, (double) bgcolor.blue / 65535); | |
7665 | } | |
7666 | ||
d2a2d277 | 7667 | /* If width and/or height is set in the display spec assume we want |
a32d4040 | 7668 | to scale to those values. If either h or w is unspecified, the |
f3700365 | 7669 | unspecified should be calculated from the specified to preserve |
549a73b9 | 7670 | aspect ratio. */ |
3de25479 JV |
7671 | value = image_spec_value (img->spec, QCwidth, NULL); |
7672 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7673 | value = image_spec_value (img->spec, QCheight, NULL); | |
7674 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7675 | |
bdf6a35d JV |
7676 | height = MagickGetImageHeight (image_wand); |
7677 | width = MagickGetImageWidth (image_wand); | |
7678 | ||
a32d4040 CY |
7679 | if (desired_width != -1 && desired_height == -1) |
7680 | /* w known, calculate h. */ | |
7681 | desired_height = (double) desired_width / width * height; | |
7682 | if (desired_width == -1 && desired_height != -1) | |
7683 | /* h known, calculate w. */ | |
7684 | desired_width = (double) desired_height / height * width; | |
7685 | if (desired_width != -1 && desired_height != -1) | |
4917006b | 7686 | { |
7574650a AS |
7687 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7688 | if (status == MagickFalse) | |
7689 | { | |
7690 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
d1d7b339 | 7691 | imagemagick_error (image_wand); |
7574650a AS |
7692 | goto imagemagick_error; |
7693 | } | |
3de25479 | 7694 | } |
3de25479 | 7695 | |
f3700365 | 7696 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7697 | efficient. */ |
7698 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7699 | ||
13464394 | 7700 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7701 | { |
a32d4040 CY |
7702 | /* After some testing, it seems MagickCropImage is the fastest crop |
7703 | function in ImageMagick. This crop function seems to do less copying | |
7704 | than the alternatives, but it still reads the entire image into memory | |
13464394 | 7705 | before cropping, which is apparently difficult to avoid when using |
a32d4040 | 7706 | imagemagick. */ |
13464394 | 7707 | size_t crop_width = XINT (XCAR (crop)); |
7574650a | 7708 | crop = XCDR (crop); |
13464394 | 7709 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7710 | { |
13464394 | 7711 | size_t crop_height = XINT (XCAR (crop)); |
7574650a | 7712 | crop = XCDR (crop); |
13464394 | 7713 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7714 | { |
13464394 | 7715 | ssize_t crop_x = XINT (XCAR (crop)); |
7574650a | 7716 | crop = XCDR (crop); |
13464394 | 7717 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7718 | { |
13464394 PE |
7719 | ssize_t crop_y = XINT (XCAR (crop)); |
7720 | MagickCropImage (image_wand, crop_width, crop_height, | |
7721 | crop_x, crop_y); | |
7574650a AS |
7722 | } |
7723 | } | |
7724 | } | |
7725 | } | |
7726 | ||
d2a2d277 JV |
7727 | /* Furthermore :rotation. we need background color and angle for |
7728 | rotation. */ | |
3de25479 | 7729 | /* |
d2a2d277 JV |
7730 | TODO background handling for rotation specified_bg = |
7731 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7732 | (specified_bg). */ |
4917006b JV |
7733 | value = image_spec_value (img->spec, QCrotation, NULL); |
7734 | if (FLOATP (value)) | |
7735 | { | |
3de25479 | 7736 | rotation = extract_float (value); |
1b9b4cf4 | 7737 | status = MagickRotateImage (image_wand, bg_wand, rotation); |
4917006b JV |
7738 | if (status == MagickFalse) |
7739 | { | |
7740 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
d1d7b339 | 7741 | imagemagick_error (image_wand); |
4917006b JV |
7742 | goto imagemagick_error; |
7743 | } | |
3de25479 | 7744 | } |
7574650a | 7745 | |
d66c4c7c | 7746 | /* Finally we are done manipulating the image. Figure out the |
e1dbe924 | 7747 | resulting width/height and transfer ownership to Emacs. */ |
4917006b JV |
7748 | height = MagickGetImageHeight (image_wand); |
7749 | width = MagickGetImageWidth (image_wand); | |
7574650a | 7750 | |
1b9b4cf4 CY |
7751 | /* Set the canvas background color to the frame or specified |
7752 | background, and flatten the image. Note: as of ImageMagick | |
7753 | 6.6.0, SVG image transparency is not handled properly | |
7754 | (e.g. etc/images/splash.svg shows a white background always). */ | |
7755 | { | |
7756 | MagickWand *new_wand; | |
7757 | MagickSetImageBackgroundColor (image_wand, bg_wand); | |
0e25d334 | 7758 | #ifdef HAVE_MAGICKMERGEIMAGELAYERS |
1b9b4cf4 | 7759 | new_wand = MagickMergeImageLayers (image_wand, MergeLayer); |
0e25d334 CY |
7760 | #else |
7761 | new_wand = MagickFlattenImages (image_wand); | |
7762 | #endif | |
1b9b4cf4 CY |
7763 | DestroyMagickWand (image_wand); |
7764 | image_wand = new_wand; | |
7765 | } | |
7766 | ||
3f791afe PE |
7767 | if (! (width <= INT_MAX && height <= INT_MAX |
7768 | && check_image_size (f, width, height))) | |
3de25479 JV |
7769 | { |
7770 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7771 | goto imagemagick_error; | |
7772 | } | |
7574650a | 7773 | |
3de25479 JV |
7774 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7775 | went ok. */ | |
3de25479 JV |
7776 | |
7777 | init_color_table (); | |
af008560 | 7778 | |
0e25d334 CY |
7779 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7780 | if (imagemagick_render_type != 0) | |
7781 | { | |
7782 | /* Magicexportimage is normally faster than pixelpushing. This | |
7783 | method is also well tested. Some aspects of this method are | |
7784 | ad-hoc and needs to be more researched. */ | |
7785 | int imagedepth = 24; /*MagickGetImageDepth(image_wand);*/ | |
7786 | const char *exportdepth = imagedepth <= 8 ? "I" : "BGRP"; /*"RGBP";*/ | |
7787 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
7788 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, | |
7789 | &ximg, &img->pixmap)) | |
7790 | { | |
7791 | #ifdef COLOR_TABLE_SUPPORT | |
7792 | free_color_table (); | |
7793 | #endif | |
7794 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); | |
7795 | goto imagemagick_error; | |
7796 | } | |
7797 | ||
7798 | /* Oddly, the below code doesn't seem to work:*/ | |
7799 | /* switch(ximg->bitmap_unit){ */ | |
7800 | /* case 8: */ | |
7801 | /* pixelwidth=CharPixel; */ | |
7802 | /* break; */ | |
7803 | /* case 16: */ | |
7804 | /* pixelwidth=ShortPixel; */ | |
7805 | /* break; */ | |
7806 | /* case 32: */ | |
7807 | /* pixelwidth=LongPixel; */ | |
7808 | /* break; */ | |
7809 | /* } */ | |
7810 | /* | |
7811 | Here im just guessing the format of the bitmap. | |
7812 | happens to work fine for: | |
7813 | - bw djvu images | |
7814 | on rgb display. | |
7815 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
7816 | */ | |
7817 | pixelwidth = CharPixel; /*??? TODO figure out*/ | |
7818 | MagickExportImagePixels (image_wand, 0, 0, width, height, | |
7819 | exportdepth, pixelwidth, ximg->data); | |
7820 | } | |
7821 | else | |
7822 | #endif /* HAVE_MAGICKEXPORTIMAGEPIXELS */ | |
4917006b | 7823 | { |
13464394 PE |
7824 | size_t image_height; |
7825 | ||
4917006b | 7826 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
d2a2d277 JV |
7827 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7828 | &ximg, &img->pixmap)) | |
4917006b | 7829 | { |
466cbae9 AS |
7830 | #ifdef COLOR_TABLE_SUPPORT |
7831 | free_color_table (); | |
7832 | #endif | |
5e617bc2 | 7833 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
4917006b JV |
7834 | goto imagemagick_error; |
7835 | } | |
7574650a | 7836 | |
53964682 | 7837 | /* Copy imagemagick image to x with primitive yet robust pixel |
4917006b | 7838 | pusher loop. This has been tested a lot with many different |
549a73b9 | 7839 | images. */ |
7574650a | 7840 | |
4917006b JV |
7841 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7842 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7843 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7844 | { |
466cbae9 AS |
7845 | #ifdef COLOR_TABLE_SUPPORT |
7846 | free_color_table (); | |
7847 | #endif | |
7848 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7849 | image_error ("Imagemagick pixel iterator creation failed", |
7850 | Qnil, Qnil); | |
3de25479 | 7851 | goto imagemagick_error; |
4917006b JV |
7852 | } |
7853 | ||
13464394 PE |
7854 | image_height = MagickGetImageHeight (image_wand); |
7855 | for (y = 0; y < image_height; y++) | |
4917006b JV |
7856 | { |
7857 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7858 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7859 | break; |
7860 | for (x = 0; x < (long) width; x++) | |
7861 | { | |
7862 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7863 | XPutPixel (ximg, x, y, |
7864 | lookup_rgb_color (f, | |
7865 | pixel.red, | |
7866 | pixel.green, | |
7867 | pixel.blue)); | |
4917006b JV |
7868 | } |
7869 | } | |
7870 | DestroyPixelIterator (iterator); | |
3de25479 | 7871 | } |
3ed42149 | 7872 | |
3de25479 JV |
7873 | #ifdef COLOR_TABLE_SUPPORT |
7874 | /* Remember colors allocated for this image. */ | |
7875 | img->colors = colors_in_color_table (&img->ncolors); | |
7876 | free_color_table (); | |
7877 | #endif /* COLOR_TABLE_SUPPORT */ | |
7878 | ||
3de25479 JV |
7879 | img->width = width; |
7880 | img->height = height; | |
7881 | ||
3de25479 JV |
7882 | /* Put the image into the pixmap, then free the X image and its |
7883 | buffer. */ | |
7884 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7885 | x_destroy_x_image (ximg); |
7886 | ||
f3700365 | 7887 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7888 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7889 | if (bg_wand) DestroyPixelWand (bg_wand); |
7890 | ||
03d32f1b | 7891 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7892 | MagickWandTerminus (); |
3de25479 JV |
7893 | |
7894 | return 1; | |
7895 | ||
7896 | imagemagick_error: | |
466cbae9 | 7897 | DestroyMagickWand (image_wand); |
1b9b4cf4 CY |
7898 | if (bg_wand) DestroyPixelWand (bg_wand); |
7899 | ||
f853f599 | 7900 | MagickWandTerminus (); |
3de25479 JV |
7901 | /* TODO more cleanup. */ |
7902 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7903 | return 0; |
7904 | } | |
7905 | ||
4917006b JV |
7906 | |
7907 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if | |
7908 | successful. this function will go into the imagemagick_type structure, and | |
7909 | the prototype thus needs to be compatible with that structure. */ | |
7910 | ||
7911 | static int | |
d66c4c7c | 7912 | imagemagick_load (struct frame *f, struct image *img) |
4917006b JV |
7913 | { |
7914 | int success_p = 0; | |
7915 | Lisp_Object file_name; | |
7916 | ||
7917 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
7918 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
7919 | if (STRINGP (file_name)) | |
7920 | { | |
7921 | Lisp_Object file; | |
4917006b JV |
7922 | |
7923 | file = x_find_image_file (file_name); | |
4917006b JV |
7924 | if (!STRINGP (file)) |
7925 | { | |
7926 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
7927 | return 0; |
7928 | } | |
33290528 | 7929 | success_p = imagemagick_load_image (f, img, 0, 0, SSDATA (file)); |
4917006b JV |
7930 | } |
7931 | /* Else its not a file, its a lisp object. Load the image from a | |
7932 | lisp object rather than a file. */ | |
7933 | else | |
7934 | { | |
7935 | Lisp_Object data; | |
7936 | ||
7937 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
7938 | if (!STRINGP (data)) |
7939 | { | |
7940 | image_error ("Invalid image data `%s'", data, Qnil); | |
7941 | return 0; | |
7942 | } | |
d2a2d277 JV |
7943 | success_p = imagemagick_load_image (f, img, SDATA (data), |
7944 | SBYTES (data), NULL); | |
4917006b JV |
7945 | } |
7946 | ||
7947 | return success_p; | |
7948 | } | |
7949 | ||
a7ca3326 | 7950 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
7951 | doc: /* Return a list of image types supported by ImageMagick. |
7952 | Each entry in this list is a symbol named after an ImageMagick format | |
7953 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
7954 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
dd605cc4 | 7955 | You can also try the shell command: `identify -list format'. |
d66c4c7c CY |
7956 | |
7957 | Note that ImageMagick recognizes many file-types that Emacs does not | |
32d72c2f GM |
7958 | recognize as images, such as C. See `imagemagick-types-enable' |
7959 | and `imagemagick-types-inhibit'. */) | |
a8101f66 | 7960 | (void) |
3de25479 JV |
7961 | { |
7962 | Lisp_Object typelist = Qnil; | |
1ab0dee5 | 7963 | size_t numf = 0; |
3de25479 | 7964 | ExceptionInfo ex; |
2277de02 | 7965 | char **imtypes; |
3f791afe | 7966 | size_t i; |
3de25479 | 7967 | Lisp_Object Qimagemagicktype; |
2277de02 JD |
7968 | |
7969 | GetExceptionInfo(&ex); | |
7970 | imtypes = GetMagickList ("*", &numf, &ex); | |
7971 | DestroyExceptionInfo(&ex); | |
7972 | ||
4917006b JV |
7973 | for (i = 0; i < numf; i++) |
7974 | { | |
7975 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
7976 | typelist = Fcons (Qimagemagicktype, typelist); |
7977 | } | |
d1d7b339 | 7978 | return Fnreverse (typelist); |
3de25479 | 7979 | } |
7574650a | 7980 | |
3de25479 JV |
7981 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
7982 | ||
7983 | ||
4ef0d4d0 | 7984 | \f |
4ab27a43 GM |
7985 | /*********************************************************************** |
7986 | SVG | |
7987 | ***********************************************************************/ | |
7988 | ||
7989 | #if defined (HAVE_RSVG) | |
7990 | ||
7991 | /* Function prototypes. */ | |
7992 | ||
f57e2426 J |
7993 | static int svg_image_p (Lisp_Object object); |
7994 | static int svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 7995 | |
f57e2426 | 7996 | static int svg_load_image (struct frame *, struct image *, |
dd52fcea | 7997 | unsigned char *, ptrdiff_t); |
4ab27a43 GM |
7998 | |
7999 | /* The symbol `svg' identifying images of this type. */ | |
8000 | ||
4b66faf3 | 8001 | static Lisp_Object Qsvg; |
4ab27a43 GM |
8002 | |
8003 | /* Indices of image specification fields in svg_format, below. */ | |
8004 | ||
8005 | enum svg_keyword_index | |
8006 | { | |
8007 | SVG_TYPE, | |
8008 | SVG_DATA, | |
8009 | SVG_FILE, | |
8010 | SVG_ASCENT, | |
8011 | SVG_MARGIN, | |
8012 | SVG_RELIEF, | |
8013 | SVG_ALGORITHM, | |
8014 | SVG_HEURISTIC_MASK, | |
8015 | SVG_MASK, | |
8016 | SVG_BACKGROUND, | |
8017 | SVG_LAST | |
8018 | }; | |
8019 | ||
8020 | /* Vector of image_keyword structures describing the format | |
8021 | of valid user-defined image specifications. */ | |
8022 | ||
91433552 | 8023 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
8024 | { |
8025 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8026 | {":data", IMAGE_STRING_VALUE, 0}, | |
8027 | {":file", IMAGE_STRING_VALUE, 0}, | |
8028 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8029 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ab27a43 GM |
8030 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8031 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8032 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8033 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8034 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8035 | }; | |
8036 | ||
8037 | /* Structure describing the image type `svg'. Its the same type of | |
8038 | structure defined for all image formats, handled by emacs image | |
8039 | functions. See struct image_type in dispextern.h. */ | |
8040 | ||
8041 | static struct image_type svg_type = | |
8042 | { | |
8043 | /* An identifier showing that this is an image structure for the SVG format. */ | |
8044 | &Qsvg, | |
8045 | /* Handle to a function that can be used to identify a SVG file. */ | |
8046 | svg_image_p, | |
8047 | /* Handle to function used to load a SVG file. */ | |
8048 | svg_load, | |
8049 | /* Handle to function to free sresources for SVG. */ | |
8050 | x_clear_image, | |
8051 | /* An internal field to link to the next image type in a list of | |
8052 | image types, will be filled in when registering the format. */ | |
c21e6151 | 8053 | NULL |
4ab27a43 GM |
8054 | }; |
8055 | ||
8056 | ||
8057 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
8058 | this by calling parse_image_spec and supplying the keywords that | |
8059 | identify the SVG format. */ | |
8060 | ||
8061 | static int | |
d3da34e0 | 8062 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
8063 | { |
8064 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 8065 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
8066 | |
8067 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8068 | return 0; | |
8069 | ||
8070 | /* Must specify either the :data or :file keyword. */ | |
8071 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8072 | } | |
8073 | ||
8074 | #include <librsvg/rsvg.h> | |
8075 | ||
5fc9fdeb JR |
8076 | #ifdef HAVE_NTGUI |
8077 | ||
8078 | /* SVG library functions. */ | |
df61c790 AS |
8079 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
8080 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
8081 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
8082 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
8083 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
df61c790 AS |
8084 | |
8085 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
8086 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
8087 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
8088 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
8089 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
8090 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
8091 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
8092 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
8093 | ||
8094 | DEF_IMGLIB_FN (void, g_type_init); | |
8095 | DEF_IMGLIB_FN (void, g_object_unref); | |
8096 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 8097 | |
df23bf08 | 8098 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb JR |
8099 | |
8100 | static int | |
8101 | init_svg_functions (Lisp_Object libraries) | |
8102 | { | |
df23bf08 | 8103 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb JR |
8104 | |
8105 | if (!(glib = w32_delayed_load (libraries, Qglib)) | |
df23bf08 | 8106 | || !(gobject = w32_delayed_load (libraries, Qgobject)) |
5fc9fdeb JR |
8107 | || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf)) |
8108 | || !(library = w32_delayed_load (libraries, Qsvg))) | |
8109 | return 0; | |
8110 | ||
8111 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8112 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8113 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8114 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8115 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
5fc9fdeb JR |
8116 | |
8117 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8118 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8119 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8120 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8121 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8122 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8123 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8124 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8125 | ||
df23bf08 JR |
8126 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8127 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8128 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8129 | |
5fc9fdeb JR |
8130 | return 1; |
8131 | } | |
4ab27a43 | 8132 | |
5fc9fdeb JR |
8133 | #else |
8134 | /* The following aliases for library functions allow dynamic loading | |
8135 | to be used on some platforms. */ | |
4ab27a43 | 8136 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8137 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8138 | #define fn_rsvg_handle_write rsvg_handle_write |
8139 | #define fn_rsvg_handle_close rsvg_handle_close | |
8140 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
4ab27a43 | 8141 | |
5fc9fdeb JR |
8142 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8143 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8144 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8145 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8146 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8147 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8148 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8149 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8150 | ||
5fc9fdeb JR |
8151 | #define fn_g_type_init g_type_init |
8152 | #define fn_g_object_unref g_object_unref | |
8153 | #define fn_g_error_free g_error_free | |
8154 | #endif /* !HAVE_NTGUI */ | |
4ab27a43 GM |
8155 | |
8156 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8157 | successful. this function will go into the svg_type structure, and | |
8158 | the prototype thus needs to be compatible with that structure. */ | |
8159 | ||
8160 | static int | |
d3da34e0 | 8161 | svg_load (struct frame *f, struct image *img) |
4ab27a43 GM |
8162 | { |
8163 | int success_p = 0; | |
8164 | Lisp_Object file_name; | |
8165 | ||
8166 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8167 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8168 | if (STRINGP (file_name)) | |
8169 | { | |
8170 | Lisp_Object file; | |
8171 | unsigned char *contents; | |
dd52fcea | 8172 | ptrdiff_t size; |
4ab27a43 GM |
8173 | |
8174 | file = x_find_image_file (file_name); | |
4ab27a43 | 8175 | if (!STRINGP (file)) |
c21e6151 YM |
8176 | { |
8177 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8178 | return 0; |
8179 | } | |
8180 | ||
4ab27a43 | 8181 | /* Read the entire file into memory. */ |
33290528 | 8182 | contents = slurp_file (SSDATA (file), &size); |
4ab27a43 | 8183 | if (contents == NULL) |
c21e6151 YM |
8184 | { |
8185 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8186 | return 0; |
8187 | } | |
4ab27a43 | 8188 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8189 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8190 | xfree (contents); |
4ab27a43 GM |
8191 | } |
8192 | /* Else its not a file, its a lisp object. Load the image from a | |
8193 | lisp object rather than a file. */ | |
8194 | else | |
8195 | { | |
8196 | Lisp_Object data; | |
8197 | ||
8198 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8199 | if (!STRINGP (data)) |
8200 | { | |
8201 | image_error ("Invalid image data `%s'", data, Qnil); | |
8202 | return 0; | |
8203 | } | |
4ab27a43 GM |
8204 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8205 | } | |
8206 | ||
8207 | return success_p; | |
8208 | } | |
8209 | ||
bbe6f2aa JB |
8210 | /* svg_load_image is a helper function for svg_load, which does the |
8211 | actual loading given contents and size, apart from frame and image | |
8212 | structures, passed from svg_load. | |
4ab27a43 | 8213 | |
bbe6f2aa | 8214 | Uses librsvg to do most of the image processing. |
c21e6151 | 8215 | |
bbe6f2aa | 8216 | Returns non-zero when successful. */ |
4ab27a43 | 8217 | static int |
d3da34e0 JB |
8218 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8219 | struct image *img, /* Pointer to emacs image structure. */ | |
8220 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
dd52fcea | 8221 | ptrdiff_t size) /* Size of data in bytes. */ |
4ab27a43 GM |
8222 | { |
8223 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8224 | RsvgDimensionData dimension_data; |
33290528 | 8225 | GError *err = NULL; |
4ab27a43 GM |
8226 | GdkPixbuf *pixbuf; |
8227 | int width; | |
8228 | int height; | |
8229 | const guint8 *pixels; | |
8230 | int rowstride; | |
8231 | XImagePtr ximg; | |
c21e6151 | 8232 | Lisp_Object specified_bg; |
4ab27a43 GM |
8233 | XColor background; |
8234 | int x; | |
8235 | int y; | |
8236 | ||
8237 | /* g_type_init is a glib function that must be called prior to using | |
8238 | gnome type library functions. */ | |
5fc9fdeb | 8239 | fn_g_type_init (); |
4ab27a43 | 8240 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8241 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8242 | |
8243 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
33290528 PE |
8244 | fn_rsvg_handle_write (rsvg_handle, contents, size, &err); |
8245 | if (err) goto rsvg_error; | |
4ab27a43 GM |
8246 | |
8247 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8248 | for further writes. */ | |
33290528 PE |
8249 | fn_rsvg_handle_close (rsvg_handle, &err); |
8250 | if (err) goto rsvg_error; | |
e025c9c2 CY |
8251 | |
8252 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8253 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8254 | { |
8255 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8256 | goto rsvg_error; | |
8257 | } | |
b2996e57 | 8258 | |
4ab27a43 GM |
8259 | /* We can now get a valid pixel buffer from the svg file, if all |
8260 | went ok. */ | |
df61c790 | 8261 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8262 | if (!pixbuf) goto rsvg_error; |
8263 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8264 | |
8265 | /* Extract some meta data from the svg handle. */ | |
8266 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8267 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8268 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8269 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8270 | ||
8271 | /* Validate the svg meta data. */ | |
8272 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8273 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8274 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8275 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8276 | ||
8277 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8278 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8279 | { | |
5fc9fdeb | 8280 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8281 | return 0; |
8282 | } | |
4ab27a43 GM |
8283 | |
8284 | init_color_table (); | |
8285 | ||
c21e6151 YM |
8286 | /* Handle alpha channel by combining the image with a background |
8287 | color. */ | |
8288 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 | 8289 | if (!STRINGP (specified_bg) |
33290528 | 8290 | || !x_defined_color (f, SSDATA (specified_bg), &background, 0)) |
c21e6151 | 8291 | { |
d7e008d0 | 8292 | #ifndef HAVE_NS |
c21e6151 YM |
8293 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8294 | x_query_color (f, &background); | |
d7e008d0 | 8295 | #else |
ed3751c8 | 8296 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8297 | #endif |
c21e6151 | 8298 | } |
4ab27a43 | 8299 | |
8d3c4e79 CY |
8300 | /* SVG pixmaps specify transparency in the last byte, so right |
8301 | shift 8 bits to get rid of it, since emacs doesn't support | |
8302 | transparency. */ | |
8303 | background.red >>= 8; | |
8304 | background.green >>= 8; | |
8305 | background.blue >>= 8; | |
8306 | ||
4ab27a43 GM |
8307 | /* This loop handles opacity values, since Emacs assumes |
8308 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8309 | calculating the resulting color, given the transparency of the |
8310 | pixel, and the image background color. */ | |
4ab27a43 GM |
8311 | for (y = 0; y < height; ++y) |
8312 | { | |
8313 | for (x = 0; x < width; ++x) | |
8314 | { | |
13464394 PE |
8315 | int red; |
8316 | int green; | |
8317 | int blue; | |
8318 | int opacity; | |
4ab27a43 GM |
8319 | |
8320 | red = *pixels++; | |
8321 | green = *pixels++; | |
8322 | blue = *pixels++; | |
8323 | opacity = *pixels++; | |
8324 | ||
8325 | red = ((red * opacity) | |
8326 | + (background.red * ((1 << 8) - opacity))); | |
8327 | green = ((green * opacity) | |
8328 | + (background.green * ((1 << 8) - opacity))); | |
8329 | blue = ((blue * opacity) | |
8330 | + (background.blue * ((1 << 8) - opacity))); | |
8331 | ||
8332 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8333 | } | |
8334 | ||
8335 | pixels += rowstride - 4 * width; | |
8336 | } | |
8337 | ||
8338 | #ifdef COLOR_TABLE_SUPPORT | |
8339 | /* Remember colors allocated for this image. */ | |
8340 | img->colors = colors_in_color_table (&img->ncolors); | |
8341 | free_color_table (); | |
8342 | #endif /* COLOR_TABLE_SUPPORT */ | |
8343 | ||
5fc9fdeb | 8344 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8345 | |
c21e6151 YM |
8346 | img->width = width; |
8347 | img->height = height; | |
8348 | ||
8349 | /* Maybe fill in the background field while we have ximg handy. | |
8350 | Casting avoids a GCC warning. */ | |
8351 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8352 | ||
4ab27a43 GM |
8353 | /* Put the image into the pixmap, then free the X image and its |
8354 | buffer. */ | |
8355 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8356 | x_destroy_x_image (ximg); | |
8357 | ||
4ab27a43 GM |
8358 | return 1; |
8359 | ||
8360 | rsvg_error: | |
e025c9c2 | 8361 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8362 | /* FIXME: Use error->message so the user knows what is the actual |
8363 | problem with the image. */ | |
8364 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
33290528 | 8365 | fn_g_error_free (err); |
4ab27a43 GM |
8366 | return 0; |
8367 | } | |
8368 | ||
8369 | #endif /* defined (HAVE_RSVG) */ | |
8370 | ||
8371 | ||
8372 | ||
4ef0d4d0 KS |
8373 | \f |
8374 | /*********************************************************************** | |
8375 | Ghostscript | |
8376 | ***********************************************************************/ | |
8377 | ||
8378 | #ifdef HAVE_X_WINDOWS | |
8379 | #define HAVE_GHOSTSCRIPT 1 | |
8380 | #endif /* HAVE_X_WINDOWS */ | |
8381 | ||
4ef0d4d0 KS |
8382 | #ifdef HAVE_GHOSTSCRIPT |
8383 | ||
f57e2426 J |
8384 | static int gs_image_p (Lisp_Object object); |
8385 | static int gs_load (struct frame *f, struct image *img); | |
8386 | static void gs_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
8387 | |
8388 | /* Keyword symbols. */ | |
8389 | ||
955cbe7b | 8390 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8391 | |
8392 | /* Indices of image specification fields in gs_format, below. */ | |
8393 | ||
8394 | enum gs_keyword_index | |
8395 | { | |
8396 | GS_TYPE, | |
8397 | GS_PT_WIDTH, | |
8398 | GS_PT_HEIGHT, | |
8399 | GS_FILE, | |
8400 | GS_LOADER, | |
8401 | GS_BOUNDING_BOX, | |
8402 | GS_ASCENT, | |
8403 | GS_MARGIN, | |
8404 | GS_RELIEF, | |
8405 | GS_ALGORITHM, | |
8406 | GS_HEURISTIC_MASK, | |
8407 | GS_MASK, | |
8408 | GS_BACKGROUND, | |
8409 | GS_LAST | |
8410 | }; | |
8411 | ||
8412 | /* Vector of image_keyword structures describing the format | |
8413 | of valid user-defined image specifications. */ | |
8414 | ||
91433552 | 8415 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8416 | { |
8417 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8418 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8419 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8420 | {":file", IMAGE_STRING_VALUE, 1}, | |
8421 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8422 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8423 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8424 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
8425 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8426 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8427 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8428 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8429 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8430 | }; | |
8431 | ||
8432 | /* Structure describing the image type `ghostscript'. */ | |
8433 | ||
8434 | static struct image_type gs_type = | |
8435 | { | |
8436 | &Qpostscript, | |
8437 | gs_image_p, | |
8438 | gs_load, | |
8439 | gs_clear_image, | |
8440 | NULL | |
8441 | }; | |
8442 | ||
8443 | ||
8444 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8445 | ||
8446 | static void | |
d3da34e0 | 8447 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 8448 | { |
4ef0d4d0 KS |
8449 | x_clear_image (f, img); |
8450 | } | |
8451 | ||
8452 | ||
8453 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8454 | specification. */ | |
8455 | ||
8456 | static int | |
d3da34e0 | 8457 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8458 | { |
8459 | struct image_keyword fmt[GS_LAST]; | |
8460 | Lisp_Object tem; | |
8461 | int i; | |
8462 | ||
72af86bd | 8463 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8464 | |
8465 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8466 | return 0; | |
8467 | ||
8468 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8469 | tem = fmt[GS_BOUNDING_BOX].value; | |
8470 | if (CONSP (tem)) | |
8471 | { | |
8472 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8473 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8474 | return 0; | |
8475 | if (!NILP (tem)) | |
8476 | return 0; | |
8477 | } | |
8478 | else if (VECTORP (tem)) | |
8479 | { | |
77b37c05 | 8480 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
8481 | return 0; |
8482 | for (i = 0; i < 4; ++i) | |
28be1ada | 8483 | if (!INTEGERP (AREF (tem, i))) |
4ef0d4d0 KS |
8484 | return 0; |
8485 | } | |
8486 | else | |
8487 | return 0; | |
8488 | ||
8489 | return 1; | |
8490 | } | |
8491 | ||
8492 | ||
8493 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8494 | if successful. */ | |
8495 | ||
8496 | static int | |
d3da34e0 | 8497 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 | 8498 | { |
13464394 PE |
8499 | uprintmax_t printnum1, printnum2; |
8500 | char buffer[sizeof " " + INT_STRLEN_BOUND (printmax_t)]; | |
4ef0d4d0 | 8501 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; |
4ef0d4d0 KS |
8502 | Lisp_Object frame; |
8503 | double in_width, in_height; | |
8504 | Lisp_Object pixel_colors = Qnil; | |
8505 | ||
8506 | /* Compute pixel size of pixmap needed from the given size in the | |
8507 | image specification. Sizes in the specification are in pt. 1 pt | |
8508 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8509 | info. */ | |
8510 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8511 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
13464394 | 8512 | in_width *= FRAME_X_DISPLAY_INFO (f)->resx; |
4ef0d4d0 | 8513 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); |
7574650a | 8514 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
13464394 | 8515 | in_height *= FRAME_X_DISPLAY_INFO (f)->resy; |
4ef0d4d0 | 8516 | |
13464394 PE |
8517 | if (! (in_width <= INT_MAX && in_height <= INT_MAX |
8518 | && check_image_size (f, in_width, in_height))) | |
f1f25b99 | 8519 | { |
10ea2b82 | 8520 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8521 | return 0; |
8522 | } | |
13464394 PE |
8523 | img->width = in_width; |
8524 | img->height = in_height; | |
f1f25b99 | 8525 | |
4ef0d4d0 | 8526 | /* Create the pixmap. */ |
a54e2c05 | 8527 | eassert (img->pixmap == NO_PIXMAP); |
4ef0d4d0 | 8528 | |
ca4aa935 PE |
8529 | if (x_check_image_size (0, img->width, img->height)) |
8530 | { | |
8531 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8532 | BLOCK_INPUT; | |
8533 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8534 | img->width, img->height, | |
8535 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8536 | UNBLOCK_INPUT; | |
8537 | } | |
4ef0d4d0 KS |
8538 | |
8539 | if (!img->pixmap) | |
8540 | { | |
8541 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8542 | return 0; | |
8543 | } | |
8544 | ||
8545 | /* Call the loader to fill the pixmap. It returns a process object | |
8546 | if successful. We do not record_unwind_protect here because | |
8547 | other places in redisplay like calling window scroll functions | |
8548 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
13464394 PE |
8549 | printnum1 = FRAME_X_WINDOW (f); |
8550 | printnum2 = img->pixmap; | |
620f13b0 | 8551 | window_and_pixmap_id |
a8290ec3 | 8552 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); |
4ef0d4d0 | 8553 | |
13464394 PE |
8554 | printnum1 = FRAME_FOREGROUND_PIXEL (f); |
8555 | printnum2 = FRAME_BACKGROUND_PIXEL (f); | |
a8290ec3 DA |
8556 | pixel_colors |
8557 | = make_formatted_string (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
8558 | |
8559 | XSETFRAME (frame, f); | |
8560 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8561 | if (NILP (loader)) | |
8562 | loader = intern ("gs-load-image"); | |
8563 | ||
b50691aa CY |
8564 | img->lisp_data = call6 (loader, frame, img->spec, |
8565 | make_number (img->width), | |
8566 | make_number (img->height), | |
8567 | window_and_pixmap_id, | |
8568 | pixel_colors); | |
8569 | return PROCESSP (img->lisp_data); | |
4ef0d4d0 KS |
8570 | } |
8571 | ||
8572 | ||
8573 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8574 | frame F. Called from XTread_socket when receiving an event | |
8575 | telling Emacs that Ghostscript has finished drawing. */ | |
8576 | ||
8577 | void | |
d3da34e0 | 8578 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8579 | { |
354884c4 | 8580 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 PE |
8581 | int class; |
8582 | ptrdiff_t i; | |
4ef0d4d0 KS |
8583 | struct image *img; |
8584 | ||
8585 | /* Find the image containing PIXMAP. */ | |
8586 | for (i = 0; i < c->used; ++i) | |
8587 | if (c->images[i]->pixmap == pixmap) | |
8588 | break; | |
8589 | ||
8590 | /* Should someone in between have cleared the image cache, for | |
8591 | instance, give up. */ | |
8592 | if (i == c->used) | |
8593 | return; | |
8594 | ||
8595 | /* Kill the GS process. We should have found PIXMAP in the image | |
8596 | cache and its image should contain a process object. */ | |
8597 | img = c->images[i]; | |
a54e2c05 | 8598 | eassert (PROCESSP (img->lisp_data)); |
b50691aa CY |
8599 | Fkill_process (img->lisp_data, Qnil); |
8600 | img->lisp_data = Qnil; | |
4ef0d4d0 KS |
8601 | |
8602 | #if defined (HAVE_X_WINDOWS) | |
8603 | ||
8604 | /* On displays with a mutable colormap, figure out the colors | |
8605 | allocated for the image by looking at the pixels of an XImage for | |
8606 | img->pixmap. */ | |
8607 | class = FRAME_X_VISUAL (f)->class; | |
8608 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8609 | { | |
8610 | XImagePtr ximg; | |
8611 | ||
8612 | BLOCK_INPUT; | |
8613 | ||
8614 | /* Try to get an XImage for img->pixmep. */ | |
8615 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8616 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8617 | if (ximg) | |
8618 | { | |
8619 | int x, y; | |
8620 | ||
8621 | /* Initialize the color table. */ | |
8622 | init_color_table (); | |
8623 | ||
8624 | /* For each pixel of the image, look its color up in the | |
8625 | color table. After having done so, the color table will | |
8626 | contain an entry for each color used by the image. */ | |
8627 | for (y = 0; y < img->height; ++y) | |
8628 | for (x = 0; x < img->width; ++x) | |
8629 | { | |
8630 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8631 | lookup_pixel_color (f, pixel); | |
8632 | } | |
8633 | ||
8634 | /* Record colors in the image. Free color table and XImage. */ | |
8635 | #ifdef COLOR_TABLE_SUPPORT | |
8636 | img->colors = colors_in_color_table (&img->ncolors); | |
8637 | free_color_table (); | |
8638 | #endif | |
8639 | XDestroyImage (ximg); | |
8640 | ||
8641 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8642 | here, we get a BadAccess later in x_clear_image when | |
8643 | freeing the colors. */ | |
8644 | /* We have allocated colors once, but Ghostscript has also | |
8645 | allocated colors on behalf of us. So, to get the | |
8646 | reference counts right, free them once. */ | |
8647 | if (img->ncolors) | |
8648 | x_free_colors (f, img->colors, img->ncolors); | |
8649 | #endif | |
8650 | } | |
8651 | else | |
8652 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8653 | img->spec, Qnil); | |
8654 | ||
8655 | UNBLOCK_INPUT; | |
8656 | } | |
8657 | #endif /* HAVE_X_WINDOWS */ | |
8658 | ||
8659 | /* Now that we have the pixmap, compute mask and transform the | |
8660 | image if requested. */ | |
8661 | BLOCK_INPUT; | |
8662 | postprocess_image (f, img); | |
8663 | UNBLOCK_INPUT; | |
8664 | } | |
8665 | ||
8666 | #endif /* HAVE_GHOSTSCRIPT */ | |
8667 | ||
8668 | \f | |
8669 | /*********************************************************************** | |
8670 | Tests | |
8671 | ***********************************************************************/ | |
8672 | ||
e509cfa6 | 8673 | #ifdef GLYPH_DEBUG |
4ef0d4d0 | 8674 | |
a7ca3326 | 8675 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 8676 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 8677 | (Lisp_Object spec) |
4ef0d4d0 KS |
8678 | { |
8679 | return valid_image_p (spec) ? Qt : Qnil; | |
8680 | } | |
8681 | ||
8682 | ||
a7ca3326 | 8683 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 8684 | (Lisp_Object spec) |
4ef0d4d0 | 8685 | { |
13464394 | 8686 | ptrdiff_t id = -1; |
4ef0d4d0 KS |
8687 | |
8688 | if (valid_image_p (spec)) | |
8689 | id = lookup_image (SELECTED_FRAME (), spec); | |
8690 | ||
8691 | debug_print (spec); | |
8692 | return make_number (id); | |
8693 | } | |
8694 | ||
e509cfa6 | 8695 | #endif /* GLYPH_DEBUG */ |
4ef0d4d0 KS |
8696 | |
8697 | ||
8698 | /*********************************************************************** | |
8699 | Initialization | |
8700 | ***********************************************************************/ | |
8701 | ||
0855eb52 JB |
8702 | #ifdef HAVE_NTGUI |
8703 | /* Image types that rely on external libraries are loaded dynamically | |
8704 | if the library is available. */ | |
adac86db | 8705 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8706 | define_image_type (image_type, init_lib_fn (libraries)) |
8707 | #else | |
adac86db | 8708 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8709 | define_image_type (image_type, 1) |
0855eb52 JB |
8710 | #endif /* HAVE_NTGUI */ |
8711 | ||
8712 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8713 | doc: /* Initialize image library implementing image type TYPE. | |
8714 | Return non-nil if TYPE is a supported image type. | |
8715 | ||
8716 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8717 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
2e288d54 | 8718 | of `dynamic-library-alist', which see). */) |
5842a27b | 8719 | (Lisp_Object type, Lisp_Object libraries) |
0855eb52 | 8720 | { |
84d358f0 | 8721 | #ifdef HAVE_NTGUI |
0855eb52 | 8722 | /* Don't try to reload the library. */ |
4c4b566b | 8723 | Lisp_Object tested = Fassq (type, Vlibrary_cache); |
0855eb52 JB |
8724 | if (CONSP (tested)) |
8725 | return XCDR (tested); | |
84d358f0 | 8726 | #endif |
0855eb52 | 8727 | |
2f142cc5 JB |
8728 | /* Types pbm and xbm are built-in and always available. */ |
8729 | if (EQ (type, Qpbm) || EQ (type, Qxbm)) | |
8730 | return Qt; | |
8731 | ||
9e2a2647 | 8732 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8733 | if (EQ (type, Qxpm)) |
adac86db | 8734 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8735 | #endif |
8736 | ||
9e2a2647 | 8737 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8738 | if (EQ (type, Qjpeg)) |
adac86db | 8739 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8740 | #endif |
8741 | ||
9e2a2647 | 8742 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8743 | if (EQ (type, Qtiff)) |
adac86db | 8744 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8745 | #endif |
8746 | ||
9e2a2647 | 8747 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8748 | if (EQ (type, Qgif)) |
adac86db | 8749 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8750 | #endif |
8751 | ||
9e2a2647 | 8752 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8753 | if (EQ (type, Qpng)) |
adac86db | 8754 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8755 | #endif |
8756 | ||
4ab27a43 GM |
8757 | #if defined (HAVE_RSVG) |
8758 | if (EQ (type, Qsvg)) | |
8759 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
8760 | #endif | |
c21e6151 | 8761 | |
3de25479 | 8762 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 8763 | if (EQ (type, Qimagemagick)) |
2f142cc5 JB |
8764 | return CHECK_LIB_AVAILABLE (&imagemagick_type, init_imagemagick_functions, |
8765 | libraries); | |
3de25479 JV |
8766 | #endif |
8767 | ||
0855eb52 JB |
8768 | #ifdef HAVE_GHOSTSCRIPT |
8769 | if (EQ (type, Qpostscript)) | |
adac86db | 8770 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8771 | #endif |
8772 | ||
8773 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8774 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8775 | return Qnil; |
8776 | } | |
8777 | ||
4ef0d4d0 | 8778 | void |
d3da34e0 | 8779 | syms_of_image (void) |
4ef0d4d0 | 8780 | { |
6e6fc3fd RS |
8781 | /* Initialize this only once, since that's what we do with Vimage_types |
8782 | and they are supposed to be in sync. Initializing here gives correct | |
8783 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8784 | image_types = NULL; | |
8785 | ||
91af3942 | 8786 | /* Must be defined now because we're going to update it below, while |
0855eb52 | 8787 | defining the supported image types. */ |
29208e82 | 8788 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 8789 | doc: /* List of potentially supported image types. |
bbe6f2aa | 8790 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
8791 | To check whether it is really supported, use `image-type-available-p'. */); |
8792 | Vimage_types = Qnil; | |
8793 | ||
29208e82 | 8794 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
8795 | doc: /* Maximum size of images. |
8796 | Emacs will not load an image into memory if its pixel width or | |
8797 | pixel height exceeds this limit. | |
8798 | ||
8799 | If the value is an integer, it directly specifies the maximum | |
8800 | image height and width, measured in pixels. If it is a floating | |
8801 | point number, it specifies the maximum image height and width | |
8802 | as a ratio to the frame height and width. If the value is | |
8803 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8804 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8805 | ||
1100a63c | 8806 | DEFSYM (Qpbm, "pbm"); |
5fc9fdeb | 8807 | ADD_IMAGE_TYPE (Qpbm); |
7c4e3a32 | 8808 | |
1100a63c | 8809 | DEFSYM (Qxbm, "xbm"); |
5fc9fdeb | 8810 | ADD_IMAGE_TYPE (Qxbm); |
7c4e3a32 RS |
8811 | |
8812 | define_image_type (&xbm_type, 1); | |
8813 | define_image_type (&pbm_type, 1); | |
8814 | ||
1100a63c CY |
8815 | DEFSYM (Qcount, "count"); |
8816 | DEFSYM (Qextension_data, "extension-data"); | |
8817 | DEFSYM (Qdelay, "delay"); | |
8818 | ||
8819 | DEFSYM (QCascent, ":ascent"); | |
8820 | DEFSYM (QCmargin, ":margin"); | |
8821 | DEFSYM (QCrelief, ":relief"); | |
8822 | DEFSYM (QCconversion, ":conversion"); | |
8823 | DEFSYM (QCcolor_symbols, ":color-symbols"); | |
8824 | DEFSYM (QCheuristic_mask, ":heuristic-mask"); | |
8825 | DEFSYM (QCindex, ":index"); | |
8826 | DEFSYM (QCgeometry, ":geometry"); | |
8827 | DEFSYM (QCcrop, ":crop"); | |
8828 | DEFSYM (QCrotation, ":rotation"); | |
8829 | DEFSYM (QCmatrix, ":matrix"); | |
8830 | DEFSYM (QCcolor_adjustment, ":color-adjustment"); | |
8831 | DEFSYM (QCmask, ":mask"); | |
8832 | ||
8833 | DEFSYM (Qlaplace, "laplace"); | |
8834 | DEFSYM (Qemboss, "emboss"); | |
8835 | DEFSYM (Qedge_detection, "edge-detection"); | |
8836 | DEFSYM (Qheuristic, "heuristic"); | |
8837 | ||
8838 | DEFSYM (Qpostscript, "postscript"); | |
4ef0d4d0 | 8839 | #ifdef HAVE_GHOSTSCRIPT |
5fc9fdeb | 8840 | ADD_IMAGE_TYPE (Qpostscript); |
1100a63c CY |
8841 | DEFSYM (QCloader, ":loader"); |
8842 | DEFSYM (QCbounding_box, ":bounding-box"); | |
8843 | DEFSYM (QCpt_width, ":pt-width"); | |
8844 | DEFSYM (QCpt_height, ":pt-height"); | |
4ef0d4d0 KS |
8845 | #endif /* HAVE_GHOSTSCRIPT */ |
8846 | ||
5be1c984 | 8847 | #ifdef HAVE_NTGUI |
1100a63c | 8848 | DEFSYM (Qlibpng_version, "libpng-version"); |
0514b4be | 8849 | Fset (Qlibpng_version, |
5be1c984 | 8850 | #if HAVE_PNG |
0514b4be | 8851 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8852 | #else |
0514b4be | 8853 | make_number (-1) |
5be1c984 | 8854 | #endif |
0514b4be | 8855 | ); |
5be1c984 EZ |
8856 | #endif |
8857 | ||
9e2a2647 | 8858 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
1100a63c | 8859 | DEFSYM (Qxpm, "xpm"); |
5fc9fdeb | 8860 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8861 | #endif |
8862 | ||
9e2a2647 | 8863 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
1100a63c | 8864 | DEFSYM (Qjpeg, "jpeg"); |
5fc9fdeb | 8865 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8866 | #endif |
8867 | ||
9e2a2647 | 8868 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
1100a63c | 8869 | DEFSYM (Qtiff, "tiff"); |
5fc9fdeb | 8870 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8871 | #endif |
8872 | ||
9e2a2647 | 8873 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
1100a63c | 8874 | DEFSYM (Qgif, "gif"); |
5fc9fdeb | 8875 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8876 | #endif |
8877 | ||
9e2a2647 | 8878 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
1100a63c | 8879 | DEFSYM (Qpng, "png"); |
5fc9fdeb | 8880 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8881 | #endif |
8882 | ||
3de25479 | 8883 | #if defined (HAVE_IMAGEMAGICK) |
1100a63c | 8884 | DEFSYM (Qimagemagick, "imagemagick"); |
3de25479 JV |
8885 | ADD_IMAGE_TYPE (Qimagemagick); |
8886 | #endif | |
7574650a | 8887 | |
4ab27a43 | 8888 | #if defined (HAVE_RSVG) |
1100a63c | 8889 | DEFSYM (Qsvg, "svg"); |
5fc9fdeb JR |
8890 | ADD_IMAGE_TYPE (Qsvg); |
8891 | #ifdef HAVE_NTGUI | |
df23bf08 | 8892 | /* Other libraries used directly by svg code. */ |
1100a63c CY |
8893 | DEFSYM (Qgdk_pixbuf, "gdk-pixbuf"); |
8894 | DEFSYM (Qglib, "glib"); | |
8895 | DEFSYM (Qgobject, "gobject"); | |
5fc9fdeb JR |
8896 | #endif /* HAVE_NTGUI */ |
8897 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8898 | |
0855eb52 | 8899 | defsubr (&Sinit_image_library); |
7574650a | 8900 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8901 | defsubr (&Simagemagick_types); |
7574650a | 8902 | #endif |
4ef0d4d0 | 8903 | defsubr (&Sclear_image_cache); |
110683ad | 8904 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8905 | defsubr (&Simage_size); |
8906 | defsubr (&Simage_mask_p); | |
1546c559 | 8907 | defsubr (&Simage_metadata); |
4ef0d4d0 | 8908 | |
e509cfa6 | 8909 | #ifdef GLYPH_DEBUG |
4ef0d4d0 KS |
8910 | defsubr (&Simagep); |
8911 | defsubr (&Slookup_image); | |
8912 | #endif | |
8913 | ||
29208e82 | 8914 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 8915 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 8916 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
8917 | A cross is always drawn on black & white displays. */); |
8918 | cross_disabled_images = 0; | |
8919 | ||
29208e82 | 8920 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 KS |
8921 | doc: /* List of directories to search for window system bitmap files. */); |
8922 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
8923 | ||
29208e82 | 8924 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
8925 | doc: /* Maximum time after which images are removed from the cache. |
8926 | When an image has not been displayed this many seconds, Emacs | |
8927 | automatically removes it from the image cache. If the cache contains | |
8928 | a large number of images, the actual eviction time may be shorter. | |
8929 | The value can also be nil, meaning the cache is never cleared. | |
8930 | ||
8931 | The function `clear-image-cache' disregards this variable. */); | |
8932 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 8933 | #ifdef HAVE_IMAGEMAGICK |
af008560 GM |
8934 | DEFVAR_INT ("imagemagick-render-type", imagemagick_render_type, |
8935 | doc: /* Integer indicating which ImageMagick rendering method to use. | |
8936 | The options are: | |
8937 | 0 -- the default method (pixel pushing) | |
8938 | 1 -- a newer method ("MagickExportImagePixels") that may perform | |
8939 | better (speed etc) in some cases, but has not been as thoroughly | |
8940 | tested with Emacs as the default method. This method requires | |
8941 | ImageMagick version 6.4.6 (approximately) or later. | |
8942 | */); | |
8943 | /* MagickExportImagePixels is in 6.4.6-9, but not 6.4.4-10. */ | |
8944 | imagemagick_render_type = 0; | |
7574650a | 8945 | #endif |
4ef0d4d0 | 8946 | |
4ef0d4d0 | 8947 | } |