Commit | Line | Data |
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4ef0d4d0 | 1 | /* Functions for image support on window system. |
32d72c2f GM |
2 | |
3 | Copyright (C) 1989, 1992-2012 Free Software Foundation, Inc. | |
4ef0d4d0 KS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
9ec0b715 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
4ef0d4d0 | 8 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
4ef0d4d0 KS |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ef0d4d0 KS |
19 | |
20 | #include <config.h> | |
4ef0d4d0 KS |
21 | #include <stdio.h> |
22 | #include <math.h> | |
be8c4ce4 | 23 | #include <ctype.h> |
4ef0d4d0 | 24 | #include <unistd.h> |
4ef0d4d0 | 25 | |
d7306fe6 DN |
26 | #ifdef HAVE_PNG |
27 | #if defined HAVE_LIBPNG_PNG_H | |
28 | # include <libpng/png.h> | |
29 | #else | |
30 | # include <png.h> | |
31 | #endif | |
285d07e2 | 32 | #endif |
d7306fe6 | 33 | |
c3417a74 DN |
34 | #include <setjmp.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 KS |
51 | |
52 | #ifdef HAVE_X_WINDOWS | |
53 | #include "xterm.h" | |
54 | #include <sys/types.h> | |
55 | #include <sys/stat.h> | |
56 | ||
57 | #define COLOR_TABLE_SUPPORT 1 | |
58 | ||
59 | typedef struct x_bitmap_record Bitmap_Record; | |
5e617bc2 | 60 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
4ef0d4d0 | 61 | #define NO_PIXMAP None |
4ef0d4d0 KS |
62 | |
63 | #define RGB_PIXEL_COLOR unsigned long | |
64 | ||
9ecf6403 YM |
65 | #define PIX_MASK_RETAIN 0 |
66 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
67 | #endif /* HAVE_X_WINDOWS */ |
68 | ||
69 | ||
70 | #ifdef HAVE_NTGUI | |
0898ca10 | 71 | #include "w32.h" |
4ef0d4d0 KS |
72 | #include "w32term.h" |
73 | ||
74 | /* W32_TODO : Color tables on W32. */ | |
75 | #undef COLOR_TABLE_SUPPORT | |
76 | ||
77 | typedef struct w32_bitmap_record Bitmap_Record; | |
5e617bc2 | 78 | #define GET_PIXEL(ximg, x, y) GetPixel (ximg, x, y) |
4ef0d4d0 | 79 | #define NO_PIXMAP 0 |
4ef0d4d0 KS |
80 | |
81 | #define RGB_PIXEL_COLOR COLORREF | |
82 | ||
9ecf6403 YM |
83 | #define PIX_MASK_RETAIN 0 |
84 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
85 | |
86 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual | |
87 | #define x_defined_color w32_defined_color | |
88 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 JR |
89 | |
90 | /* Functions from w32term.c that depend on XColor (so can't go in w32term.h | |
91 | without modifying lots of files). */ | |
92 | extern void x_query_colors (struct frame *f, XColor *colors, int ncolors); | |
93 | extern void x_query_color (struct frame *f, XColor *color); | |
5be1c984 EZ |
94 | |
95 | /* Version of libpng that we were compiled with, or -1 if no PNG | |
96 | support was compiled in. This is tested by w32-win.el to correctly | |
97 | set up the alist used to search for PNG libraries. */ | |
98 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
99 | #endif /* HAVE_NTGUI */ |
100 | ||
edfda783 AR |
101 | #ifdef HAVE_NS |
102 | #include "nsterm.h" | |
103 | #include <sys/types.h> | |
104 | #include <sys/stat.h> | |
105 | ||
106 | #undef COLOR_TABLE_SUPPORT | |
107 | ||
108 | typedef struct ns_bitmap_record Bitmap_Record; | |
109 | ||
5e617bc2 | 110 | #define GET_PIXEL(ximg, x, y) XGetPixel (ximg, x, y) |
edfda783 AR |
111 | #define NO_PIXMAP 0 |
112 | ||
113 | #define RGB_PIXEL_COLOR unsigned long | |
114 | #define ZPixmap 0 | |
115 | ||
116 | #define PIX_MASK_RETAIN 0 | |
117 | #define PIX_MASK_DRAW 1 | |
118 | ||
5e617bc2 | 119 | #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO (f)->visual |
edfda783 AR |
120 | #define x_defined_color(f, name, color_def, alloc) \ |
121 | ns_defined_color (f, name, color_def, alloc, 0) | |
122 | #define FRAME_X_SCREEN(f) 0 | |
9e50ff0c | 123 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
124 | #endif /* HAVE_NS */ |
125 | ||
126 | ||
97ec208f DN |
127 | /* The symbol `postscript' identifying images of this type. */ |
128 | ||
955cbe7b | 129 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 130 | |
f57e2426 J |
131 | static void x_disable_image (struct frame *, struct image *); |
132 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
133 | Lisp_Object); | |
4ef0d4d0 | 134 | |
f57e2426 J |
135 | static void init_color_table (void); |
136 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 137 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
138 | static void free_color_table (void); |
139 | static unsigned long *colors_in_color_table (int *n); | |
4ef0d4d0 | 140 | #endif |
cd64ea1d | 141 | static Lisp_Object Finit_image_library (Lisp_Object, Lisp_Object); |
4ef0d4d0 KS |
142 | |
143 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
144 | id, which is just an int that this section returns. Bitmaps are | |
145 | reference counted so they can be shared among frames. | |
146 | ||
147 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
148 | be used to indicate no bitmap. | |
149 | ||
150 | If you use x_create_bitmap_from_data, then you must keep track of | |
151 | the bitmaps yourself. That is, creating a bitmap from the same | |
152 | data more than once will not be caught. */ | |
153 | ||
edfda783 AR |
154 | #ifdef HAVE_NS |
155 | XImagePtr | |
156 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
157 | unsigned int width, unsigned int height, | |
158 | unsigned long plane_mask, int format) | |
159 | { | |
6fb5f7da | 160 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 161 | ns_retain_object (pixmap); |
edfda783 AR |
162 | return pixmap; |
163 | } | |
164 | ||
165 | /* use with imgs created by ns_image_for_XPM */ | |
166 | unsigned long | |
167 | XGetPixel (XImagePtr ximage, int x, int y) | |
168 | { | |
ed3751c8 | 169 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
170 | } |
171 | ||
172 | /* use with imgs created by ns_image_for_XPM; alpha set to 1; | |
173 | pixel is assumed to be in form RGB */ | |
174 | void | |
175 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
176 | { | |
ed3751c8 | 177 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
178 | } |
179 | #endif /* HAVE_NS */ | |
180 | ||
4ef0d4d0 KS |
181 | |
182 | /* Functions to access the contents of a bitmap, given an id. */ | |
183 | ||
184 | int | |
0766b489 | 185 | x_bitmap_height (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
186 | { |
187 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
188 | } | |
189 | ||
190 | int | |
0766b489 | 191 | x_bitmap_width (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
192 | { |
193 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
194 | } | |
195 | ||
196 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
197 | int | |
0766b489 | 198 | x_bitmap_pixmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 | 199 | { |
f6cfbd8f EZ |
200 | /* HAVE_NTGUI needs the explicit cast here. */ |
201 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
4ef0d4d0 KS |
202 | } |
203 | #endif | |
204 | ||
205 | #ifdef HAVE_X_WINDOWS | |
206 | int | |
0766b489 | 207 | x_bitmap_mask (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
208 | { |
209 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
210 | } | |
211 | #endif | |
212 | ||
213 | /* Allocate a new bitmap record. Returns index of new record. */ | |
214 | ||
0766b489 | 215 | static ptrdiff_t |
d3da34e0 | 216 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
217 | { |
218 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 219 | ptrdiff_t i; |
4ef0d4d0 | 220 | |
4ef0d4d0 KS |
221 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) |
222 | return ++dpyinfo->bitmaps_last; | |
223 | ||
224 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
225 | if (dpyinfo->bitmaps[i].refcount == 0) | |
226 | return i + 1; | |
227 | ||
a69fbedb PE |
228 | dpyinfo->bitmaps = |
229 | xpalloc (dpyinfo->bitmaps, &dpyinfo->bitmaps_size, | |
230 | 10, -1, sizeof *dpyinfo->bitmaps); | |
4ef0d4d0 KS |
231 | return ++dpyinfo->bitmaps_last; |
232 | } | |
233 | ||
234 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
235 | ||
236 | void | |
13464394 | 237 | x_reference_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
238 | { |
239 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
240 | } | |
241 | ||
242 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
243 | ||
0766b489 | 244 | ptrdiff_t |
d3da34e0 | 245 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
246 | { |
247 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 | 248 | ptrdiff_t id; |
4ef0d4d0 KS |
249 | |
250 | #ifdef HAVE_X_WINDOWS | |
251 | Pixmap bitmap; | |
252 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
253 | bits, width, height); | |
254 | if (! bitmap) | |
255 | return -1; | |
256 | #endif /* HAVE_X_WINDOWS */ | |
257 | ||
258 | #ifdef HAVE_NTGUI | |
259 | Pixmap bitmap; | |
260 | bitmap = CreateBitmap (width, height, | |
261 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
262 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
263 | bits); | |
264 | if (! bitmap) | |
265 | return -1; | |
266 | #endif /* HAVE_NTGUI */ | |
267 | ||
edfda783 | 268 | #ifdef HAVE_NS |
ed3751c8 | 269 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
270 | if (!bitmap) |
271 | return -1; | |
272 | #endif | |
273 | ||
4ef0d4d0 | 274 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 275 | |
edfda783 AR |
276 | #ifdef HAVE_NS |
277 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
278 | dpyinfo->bitmaps[id - 1].depth = 1; | |
279 | #endif | |
280 | ||
4ef0d4d0 KS |
281 | dpyinfo->bitmaps[id - 1].file = NULL; |
282 | dpyinfo->bitmaps[id - 1].height = height; | |
283 | dpyinfo->bitmaps[id - 1].width = width; | |
284 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
285 | ||
286 | #ifdef HAVE_X_WINDOWS | |
287 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
288 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
289 | dpyinfo->bitmaps[id - 1].depth = 1; | |
290 | #endif /* HAVE_X_WINDOWS */ | |
291 | ||
292 | #ifdef HAVE_NTGUI | |
293 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
294 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
295 | dpyinfo->bitmaps[id - 1].depth = 1; | |
296 | #endif /* HAVE_NTGUI */ | |
297 | ||
298 | return id; | |
299 | } | |
300 | ||
301 | /* Create bitmap from file FILE for frame F. */ | |
302 | ||
0766b489 | 303 | ptrdiff_t |
d3da34e0 | 304 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 305 | { |
edfda783 AR |
306 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
307 | ||
4ef0d4d0 KS |
308 | #ifdef HAVE_NTGUI |
309 | return -1; /* W32_TODO : bitmap support */ | |
310 | #endif /* HAVE_NTGUI */ | |
311 | ||
edfda783 | 312 | #ifdef HAVE_NS |
0766b489 | 313 | ptrdiff_t id; |
ed3751c8 | 314 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
315 | |
316 | if (!bitmap) | |
317 | return -1; | |
318 | ||
319 | ||
320 | id = x_allocate_bitmap_record (f); | |
321 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
322 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
323 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
324 | dpyinfo->bitmaps[id - 1].depth = 1; | |
ed3751c8 JB |
325 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
326 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
edfda783 AR |
327 | strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file)); |
328 | return id; | |
329 | #endif | |
330 | ||
4ef0d4d0 | 331 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
332 | unsigned int width, height; |
333 | Pixmap bitmap; | |
0766b489 PE |
334 | int xhot, yhot, result; |
335 | ptrdiff_t id; | |
4ef0d4d0 KS |
336 | Lisp_Object found; |
337 | int fd; | |
338 | char *filename; | |
339 | ||
340 | /* Look for an existing bitmap with the same name. */ | |
341 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
342 | { | |
343 | if (dpyinfo->bitmaps[id].refcount | |
344 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 345 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
346 | { |
347 | ++dpyinfo->bitmaps[id].refcount; | |
348 | return id + 1; | |
349 | } | |
350 | } | |
351 | ||
352 | /* Search bitmap-file-path for the file, if appropriate. */ | |
353 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
354 | if (fd < 0) | |
355 | return -1; | |
356 | emacs_close (fd); | |
357 | ||
51b59d79 | 358 | filename = SSDATA (found); |
4ef0d4d0 KS |
359 | |
360 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
361 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
362 | if (result != BitmapSuccess) | |
363 | return -1; | |
364 | ||
365 | id = x_allocate_bitmap_record (f); | |
366 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
367 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
368 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
369 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
370 | dpyinfo->bitmaps[id - 1].depth = 1; | |
371 | dpyinfo->bitmaps[id - 1].height = height; | |
372 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 373 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
374 | |
375 | return id; | |
376 | #endif /* HAVE_X_WINDOWS */ | |
377 | } | |
378 | ||
379 | /* Free bitmap B. */ | |
380 | ||
381 | static void | |
d3da34e0 | 382 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
383 | { |
384 | #ifdef HAVE_X_WINDOWS | |
385 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
386 | if (bm->have_mask) | |
387 | XFreePixmap (dpyinfo->display, bm->mask); | |
388 | #endif /* HAVE_X_WINDOWS */ | |
389 | ||
390 | #ifdef HAVE_NTGUI | |
391 | DeleteObject (bm->pixmap); | |
392 | #endif /* HAVE_NTGUI */ | |
393 | ||
edfda783 | 394 | #ifdef HAVE_NS |
ed3751c8 | 395 | ns_release_object (bm->img); |
edfda783 AR |
396 | #endif |
397 | ||
4ef0d4d0 KS |
398 | if (bm->file) |
399 | { | |
400 | xfree (bm->file); | |
401 | bm->file = NULL; | |
402 | } | |
403 | } | |
404 | ||
405 | /* Remove reference to bitmap with id number ID. */ | |
406 | ||
407 | void | |
0766b489 | 408 | x_destroy_bitmap (FRAME_PTR f, ptrdiff_t id) |
4ef0d4d0 KS |
409 | { |
410 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
411 | ||
412 | if (id > 0) | |
413 | { | |
414 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
415 | ||
416 | if (--bm->refcount == 0) | |
417 | { | |
418 | BLOCK_INPUT; | |
65342ae3 | 419 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
420 | UNBLOCK_INPUT; |
421 | } | |
422 | } | |
423 | } | |
424 | ||
425 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
426 | ||
427 | void | |
d3da34e0 | 428 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 | 429 | { |
0766b489 | 430 | ptrdiff_t i; |
4ef0d4d0 KS |
431 | Bitmap_Record *bm = dpyinfo->bitmaps; |
432 | ||
433 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
434 | if (bm->refcount > 0) | |
65342ae3 | 435 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
436 | |
437 | dpyinfo->bitmaps_last = 0; | |
438 | } | |
439 | ||
440 | ||
441 | #ifdef HAVE_X_WINDOWS | |
442 | ||
443 | /* Useful functions defined in the section | |
444 | `Image type independent image structures' below. */ | |
445 | ||
f57e2426 J |
446 | static unsigned long four_corners_best (XImagePtr ximg, |
447 | int *corners, | |
448 | unsigned long width, | |
449 | unsigned long height); | |
4ef0d4d0 | 450 | |
f57e2426 J |
451 | static int x_create_x_image_and_pixmap (struct frame *f, int width, int height, |
452 | int depth, XImagePtr *ximg, | |
453 | Pixmap *pixmap); | |
4ef0d4d0 | 454 | |
f57e2426 | 455 | static void x_destroy_x_image (XImagePtr ximg); |
4ef0d4d0 KS |
456 | |
457 | ||
458 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
459 | It's nicer with some borders in this context */ | |
460 | ||
461 | int | |
0766b489 | 462 | x_create_bitmap_mask (struct frame *f, ptrdiff_t id) |
4ef0d4d0 KS |
463 | { |
464 | Pixmap pixmap, mask; | |
465 | XImagePtr ximg, mask_img; | |
466 | unsigned long width, height; | |
467 | int result; | |
468 | unsigned long bg; | |
469 | unsigned long x, y, xp, xm, yp, ym; | |
470 | GC gc; | |
471 | ||
472 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
473 | ||
474 | if (!(id > 0)) | |
475 | return -1; | |
476 | ||
477 | pixmap = x_bitmap_pixmap (f, id); | |
478 | width = x_bitmap_width (f, id); | |
479 | height = x_bitmap_height (f, id); | |
480 | ||
481 | BLOCK_INPUT; | |
482 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
483 | ~0, ZPixmap); | |
484 | ||
485 | if (!ximg) | |
486 | { | |
487 | UNBLOCK_INPUT; | |
488 | return -1; | |
489 | } | |
490 | ||
491 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
492 | ||
493 | UNBLOCK_INPUT; | |
494 | if (!result) | |
495 | { | |
496 | XDestroyImage (ximg); | |
497 | return -1; | |
498 | } | |
499 | ||
6ac3c7bb | 500 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
501 | |
502 | for (y = 0; y < ximg->height; ++y) | |
503 | { | |
504 | for (x = 0; x < ximg->width; ++x) | |
505 | { | |
506 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
507 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
508 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
509 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
510 | if (XGetPixel (ximg, x, y) == bg | |
511 | && XGetPixel (ximg, x, yp) == bg | |
512 | && XGetPixel (ximg, x, ym) == bg | |
513 | && XGetPixel (ximg, xp, y) == bg | |
514 | && XGetPixel (ximg, xp, yp) == bg | |
515 | && XGetPixel (ximg, xp, ym) == bg | |
516 | && XGetPixel (ximg, xm, y) == bg | |
517 | && XGetPixel (ximg, xm, yp) == bg | |
518 | && XGetPixel (ximg, xm, ym) == bg) | |
519 | XPutPixel (mask_img, x, y, 0); | |
520 | else | |
521 | XPutPixel (mask_img, x, y, 1); | |
522 | } | |
523 | } | |
524 | ||
525 | xassert (interrupt_input_blocked); | |
526 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); | |
527 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
528 | width, height); | |
529 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
530 | ||
531 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
532 | dpyinfo->bitmaps[id - 1].mask = mask; | |
533 | ||
534 | XDestroyImage (ximg); | |
535 | x_destroy_x_image (mask_img); | |
536 | ||
537 | return 0; | |
538 | } | |
539 | ||
540 | #endif /* HAVE_X_WINDOWS */ | |
541 | ||
542 | ||
543 | /*********************************************************************** | |
544 | Image types | |
545 | ***********************************************************************/ | |
546 | ||
4ef0d4d0 KS |
547 | /* List of supported image types. Use define_image_type to add new |
548 | types. Use lookup_image_type to find a type for a given symbol. */ | |
549 | ||
550 | static struct image_type *image_types; | |
551 | ||
552 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ | |
553 | ||
955cbe7b | 554 | static Lisp_Object Qxbm; |
4ef0d4d0 KS |
555 | |
556 | /* Keywords. */ | |
557 | ||
955cbe7b | 558 | Lisp_Object QCascent, QCmargin, QCrelief; |
955cbe7b PE |
559 | Lisp_Object QCconversion; |
560 | static Lisp_Object QCheuristic_mask; | |
561 | static Lisp_Object QCcolor_symbols; | |
562 | static Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask, QCgeometry; | |
563 | static Lisp_Object QCcrop, QCrotation; | |
4ef0d4d0 KS |
564 | |
565 | /* Other symbols. */ | |
566 | ||
1100a63c | 567 | static Lisp_Object Qcount, Qextension_data, Qdelay; |
955cbe7b | 568 | static Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; |
4ef0d4d0 | 569 | |
4ef0d4d0 KS |
570 | /* Function prototypes. */ |
571 | ||
f57e2426 J |
572 | static Lisp_Object define_image_type (struct image_type *type, int loaded); |
573 | static struct image_type *lookup_image_type (Lisp_Object symbol); | |
675e2c69 | 574 | static void image_error (const char *format, Lisp_Object, Lisp_Object); |
f57e2426 J |
575 | static void x_laplace (struct frame *, struct image *); |
576 | static void x_emboss (struct frame *, struct image *); | |
577 | static int x_build_heuristic_mask (struct frame *, struct image *, | |
578 | Lisp_Object); | |
84d358f0 | 579 | #ifdef HAVE_NTGUI |
0855eb52 | 580 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 581 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
582 | #else |
583 | #define CACHE_IMAGE_TYPE(type, status) | |
584 | #endif | |
0855eb52 JB |
585 | |
586 | #define ADD_IMAGE_TYPE(type) \ | |
587 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
588 | |
589 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 590 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 591 | |
0855eb52 | 592 | static Lisp_Object |
d3da34e0 | 593 | define_image_type (struct image_type *type, int loaded) |
4ef0d4d0 | 594 | { |
0855eb52 JB |
595 | Lisp_Object success; |
596 | ||
597 | if (!loaded) | |
598 | success = Qnil; | |
599 | else | |
600 | { | |
601 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
602 | The initialized data segment is read-only. */ | |
603 | struct image_type *p = (struct image_type *) xmalloc (sizeof *p); | |
72af86bd | 604 | memcpy (p, type, sizeof *p); |
0855eb52 JB |
605 | p->next = image_types; |
606 | image_types = p; | |
607 | success = Qt; | |
608 | } | |
609 | ||
adac86db | 610 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 611 | return success; |
4ef0d4d0 KS |
612 | } |
613 | ||
614 | ||
615 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
616 | structure. Value is null if SYMBOL is not a known image type. */ | |
617 | ||
55d4c1b2 | 618 | static inline struct image_type * |
d3da34e0 | 619 | lookup_image_type (Lisp_Object symbol) |
4ef0d4d0 KS |
620 | { |
621 | struct image_type *type; | |
622 | ||
803aac3e | 623 | /* We must initialize the image-type if it hasn't been already. */ |
2e288d54 | 624 | if (NILP (Finit_image_library (symbol, Vdynamic_library_alist))) |
803aac3e MB |
625 | return 0; /* unimplemented */ |
626 | ||
4ef0d4d0 KS |
627 | for (type = image_types; type; type = type->next) |
628 | if (EQ (symbol, *type->type)) | |
629 | break; | |
630 | ||
631 | return type; | |
632 | } | |
633 | ||
634 | ||
635 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
636 | valid image specification is a list whose car is the symbol | |
637 | `image', and whose rest is a property list. The property list must | |
638 | contain a value for key `:type'. That value must be the name of a | |
639 | supported image type. The rest of the property list depends on the | |
640 | image type. */ | |
641 | ||
642 | int | |
d3da34e0 | 643 | valid_image_p (Lisp_Object object) |
4ef0d4d0 KS |
644 | { |
645 | int valid_p = 0; | |
646 | ||
647 | if (IMAGEP (object)) | |
648 | { | |
649 | Lisp_Object tem; | |
650 | ||
651 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
652 | if (EQ (XCAR (tem), QCtype)) | |
653 | { | |
654 | tem = XCDR (tem); | |
655 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
656 | { | |
657 | struct image_type *type; | |
658 | type = lookup_image_type (XCAR (tem)); | |
659 | if (type) | |
660 | valid_p = type->valid_p (object); | |
661 | } | |
662 | ||
663 | break; | |
664 | } | |
665 | } | |
666 | ||
667 | return valid_p; | |
668 | } | |
669 | ||
670 | ||
671 | /* Log error message with format string FORMAT and argument ARG. | |
672 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
673 | good idea because this would interrupt redisplay, and the error | |
674 | message display would lead to another redisplay. This function | |
675 | therefore simply displays a message. */ | |
676 | ||
677 | static void | |
675e2c69 | 678 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
679 | { |
680 | add_to_log (format, arg1, arg2); | |
681 | } | |
682 | ||
683 | ||
684 | \f | |
685 | /*********************************************************************** | |
686 | Image specifications | |
687 | ***********************************************************************/ | |
688 | ||
689 | enum image_value_type | |
690 | { | |
691 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
692 | IMAGE_STRING_VALUE, | |
693 | IMAGE_STRING_OR_NIL_VALUE, | |
694 | IMAGE_SYMBOL_VALUE, | |
695 | IMAGE_POSITIVE_INTEGER_VALUE, | |
c4a07a4c | 696 | IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, |
4ef0d4d0 KS |
697 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, |
698 | IMAGE_ASCENT_VALUE, | |
699 | IMAGE_INTEGER_VALUE, | |
700 | IMAGE_FUNCTION_VALUE, | |
701 | IMAGE_NUMBER_VALUE, | |
702 | IMAGE_BOOL_VALUE | |
703 | }; | |
704 | ||
705 | /* Structure used when parsing image specifications. */ | |
706 | ||
707 | struct image_keyword | |
708 | { | |
709 | /* Name of keyword. */ | |
675e2c69 | 710 | const char *name; |
4ef0d4d0 KS |
711 | |
712 | /* The type of value allowed. */ | |
713 | enum image_value_type type; | |
714 | ||
715 | /* Non-zero means key must be present. */ | |
716 | int mandatory_p; | |
717 | ||
718 | /* Used to recognize duplicate keywords in a property list. */ | |
719 | int count; | |
720 | ||
721 | /* The value that was found. */ | |
722 | Lisp_Object value; | |
723 | }; | |
724 | ||
725 | ||
f57e2426 J |
726 | static int parse_image_spec (Lisp_Object, struct image_keyword *, |
727 | int, Lisp_Object); | |
728 | static Lisp_Object image_spec_value (Lisp_Object, Lisp_Object, int *); | |
4ef0d4d0 KS |
729 | |
730 | ||
731 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
732 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
733 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
734 | image_keywords structures of size NKEYWORDS describing other | |
735 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
736 | ||
737 | static int | |
d3da34e0 JB |
738 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
739 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
740 | { |
741 | int i; | |
742 | Lisp_Object plist; | |
743 | ||
744 | if (!IMAGEP (spec)) | |
745 | return 0; | |
746 | ||
747 | plist = XCDR (spec); | |
748 | while (CONSP (plist)) | |
749 | { | |
750 | Lisp_Object key, value; | |
751 | ||
752 | /* First element of a pair must be a symbol. */ | |
753 | key = XCAR (plist); | |
754 | plist = XCDR (plist); | |
755 | if (!SYMBOLP (key)) | |
756 | return 0; | |
757 | ||
758 | /* There must follow a value. */ | |
759 | if (!CONSP (plist)) | |
760 | return 0; | |
761 | value = XCAR (plist); | |
762 | plist = XCDR (plist); | |
763 | ||
764 | /* Find key in KEYWORDS. Error if not found. */ | |
765 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 766 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
767 | break; |
768 | ||
769 | if (i == nkeywords) | |
770 | continue; | |
771 | ||
772 | /* Record that we recognized the keyword. If a keywords | |
773 | was found more than once, it's an error. */ | |
774 | keywords[i].value = value; | |
4ef0d4d0 KS |
775 | if (keywords[i].count > 1) |
776 | return 0; | |
d311d28c | 777 | ++keywords[i].count; |
4ef0d4d0 KS |
778 | |
779 | /* Check type of value against allowed type. */ | |
780 | switch (keywords[i].type) | |
781 | { | |
782 | case IMAGE_STRING_VALUE: | |
783 | if (!STRINGP (value)) | |
784 | return 0; | |
785 | break; | |
786 | ||
787 | case IMAGE_STRING_OR_NIL_VALUE: | |
788 | if (!STRINGP (value) && !NILP (value)) | |
789 | return 0; | |
790 | break; | |
791 | ||
792 | case IMAGE_SYMBOL_VALUE: | |
793 | if (!SYMBOLP (value)) | |
794 | return 0; | |
795 | break; | |
796 | ||
797 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
13464394 | 798 | if (! RANGED_INTEGERP (1, value, INT_MAX)) |
4ef0d4d0 KS |
799 | return 0; |
800 | break; | |
801 | ||
c4a07a4c PE |
802 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR: |
803 | if (RANGED_INTEGERP (0, value, INT_MAX)) | |
4ef0d4d0 KS |
804 | break; |
805 | if (CONSP (value) | |
c4a07a4c PE |
806 | && RANGED_INTEGERP (0, XCAR (value), INT_MAX) |
807 | && RANGED_INTEGERP (0, XCDR (value), INT_MAX)) | |
4ef0d4d0 KS |
808 | break; |
809 | return 0; | |
810 | ||
811 | case IMAGE_ASCENT_VALUE: | |
812 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
813 | break; | |
13464394 | 814 | else if (RANGED_INTEGERP (0, value, 100)) |
4ef0d4d0 KS |
815 | break; |
816 | return 0; | |
817 | ||
818 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
13464394 PE |
819 | /* Unlike the other integer-related cases, this one does not |
820 | verify that VALUE fits in 'int'. This is because callers | |
821 | want EMACS_INT. */ | |
4ef0d4d0 KS |
822 | if (!INTEGERP (value) || XINT (value) < 0) |
823 | return 0; | |
824 | break; | |
825 | ||
826 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
827 | break; | |
828 | ||
829 | case IMAGE_FUNCTION_VALUE: | |
830 | value = indirect_function (value); | |
ca105506 | 831 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
832 | break; |
833 | return 0; | |
834 | ||
835 | case IMAGE_NUMBER_VALUE: | |
836 | if (!INTEGERP (value) && !FLOATP (value)) | |
837 | return 0; | |
838 | break; | |
839 | ||
840 | case IMAGE_INTEGER_VALUE: | |
13464394 | 841 | if (! TYPE_RANGED_INTEGERP (int, value)) |
4ef0d4d0 KS |
842 | return 0; |
843 | break; | |
844 | ||
845 | case IMAGE_BOOL_VALUE: | |
846 | if (!NILP (value) && !EQ (value, Qt)) | |
847 | return 0; | |
848 | break; | |
849 | ||
850 | default: | |
851 | abort (); | |
852 | break; | |
853 | } | |
854 | ||
855 | if (EQ (key, QCtype) && !EQ (type, value)) | |
856 | return 0; | |
857 | } | |
858 | ||
859 | /* Check that all mandatory fields are present. */ | |
860 | for (i = 0; i < nkeywords; ++i) | |
861 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
862 | return 0; | |
863 | ||
864 | return NILP (plist); | |
865 | } | |
866 | ||
867 | ||
868 | /* Return the value of KEY in image specification SPEC. Value is nil | |
869 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
870 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
871 | ||
872 | static Lisp_Object | |
d3da34e0 | 873 | image_spec_value (Lisp_Object spec, Lisp_Object key, int *found) |
4ef0d4d0 KS |
874 | { |
875 | Lisp_Object tail; | |
876 | ||
877 | xassert (valid_image_p (spec)); | |
878 | ||
879 | for (tail = XCDR (spec); | |
880 | CONSP (tail) && CONSP (XCDR (tail)); | |
881 | tail = XCDR (XCDR (tail))) | |
882 | { | |
883 | if (EQ (XCAR (tail), key)) | |
884 | { | |
885 | if (found) | |
886 | *found = 1; | |
887 | return XCAR (XCDR (tail)); | |
888 | } | |
889 | } | |
890 | ||
891 | if (found) | |
892 | *found = 0; | |
893 | return Qnil; | |
894 | } | |
895 | ||
896 | ||
897 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
898 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
899 | PIXELS non-nil means return the size in pixels, otherwise return the | |
900 | size in canonical character units. | |
901 | FRAME is the frame on which the image will be displayed. FRAME nil | |
902 | or omitted means use the selected frame. */) | |
5842a27b | 903 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
904 | { |
905 | Lisp_Object size; | |
906 | ||
907 | size = Qnil; | |
908 | if (valid_image_p (spec)) | |
909 | { | |
910 | struct frame *f = check_x_frame (frame); | |
13464394 | 911 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
912 | struct image *img = IMAGE_FROM_ID (f, id); |
913 | int width = img->width + 2 * img->hmargin; | |
914 | int height = img->height + 2 * img->vmargin; | |
915 | ||
916 | if (NILP (pixels)) | |
917 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
918 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
919 | else | |
920 | size = Fcons (make_number (width), make_number (height)); | |
921 | } | |
922 | else | |
923 | error ("Invalid image specification"); | |
924 | ||
925 | return size; | |
926 | } | |
927 | ||
928 | ||
929 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
930 | doc: /* Return t if image SPEC has a mask bitmap. | |
931 | FRAME is the frame on which the image will be displayed. FRAME nil | |
932 | or omitted means use the selected frame. */) | |
5842a27b | 933 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
934 | { |
935 | Lisp_Object mask; | |
936 | ||
937 | mask = Qnil; | |
938 | if (valid_image_p (spec)) | |
939 | { | |
940 | struct frame *f = check_x_frame (frame); | |
13464394 | 941 | ptrdiff_t id = lookup_image (f, spec); |
4ef0d4d0 KS |
942 | struct image *img = IMAGE_FROM_ID (f, id); |
943 | if (img->mask) | |
944 | mask = Qt; | |
945 | } | |
946 | else | |
947 | error ("Invalid image specification"); | |
948 | ||
949 | return mask; | |
950 | } | |
951 | ||
1546c559 JL |
952 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
953 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
954 | FRAME is the frame on which the image will be displayed. FRAME nil |
955 | or omitted means use the selected frame. */) | |
5842a27b | 956 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
957 | { |
958 | Lisp_Object ext; | |
959 | ||
960 | ext = Qnil; | |
961 | if (valid_image_p (spec)) | |
962 | { | |
963 | struct frame *f = check_x_frame (frame); | |
13464394 | 964 | ptrdiff_t id = lookup_image (f, spec); |
6ac3c7bb | 965 | struct image *img = IMAGE_FROM_ID (f, id); |
b50691aa | 966 | ext = img->lisp_data; |
6ac3c7bb KS |
967 | } |
968 | ||
969 | return ext; | |
970 | } | |
971 | ||
4ef0d4d0 KS |
972 | \f |
973 | /*********************************************************************** | |
974 | Image type independent image structures | |
975 | ***********************************************************************/ | |
976 | ||
f57e2426 | 977 | static void free_image (struct frame *f, struct image *img); |
4ef0d4d0 | 978 | |
11273115 | 979 | #define MAX_IMAGE_SIZE 10.0 |
4ef0d4d0 KS |
980 | /* Allocate and return a new image structure for image specification |
981 | SPEC. SPEC has a hash value of HASH. */ | |
982 | ||
983 | static struct image * | |
0de4bb68 | 984 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 KS |
985 | { |
986 | struct image *img = (struct image *) xmalloc (sizeof *img); | |
a2bc5bdd | 987 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 KS |
988 | |
989 | xassert (valid_image_p (spec)); | |
72af86bd | 990 | memset (img, 0, sizeof *img); |
a2bc5bdd | 991 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 KS |
992 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
993 | xassert (img->type != NULL); | |
994 | img->spec = spec; | |
b50691aa | 995 | img->lisp_data = Qnil; |
4ef0d4d0 KS |
996 | img->ascent = DEFAULT_IMAGE_ASCENT; |
997 | img->hash = hash; | |
6ac3c7bb | 998 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
999 | return img; |
1000 | } | |
1001 | ||
1002 | ||
1003 | /* Free image IMG which was used on frame F, including its resources. */ | |
1004 | ||
1005 | static void | |
d3da34e0 | 1006 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1007 | { |
1008 | if (img) | |
1009 | { | |
354884c4 | 1010 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1011 | |
1012 | /* Remove IMG from the hash table of its cache. */ | |
1013 | if (img->prev) | |
1014 | img->prev->next = img->next; | |
1015 | else | |
1016 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1017 | ||
1018 | if (img->next) | |
1019 | img->next->prev = img->prev; | |
1020 | ||
1021 | c->images[img->id] = NULL; | |
1022 | ||
1023 | /* Free resources, then free IMG. */ | |
1024 | img->type->free (f, img); | |
1025 | xfree (img); | |
1026 | } | |
1027 | } | |
1028 | ||
f1f25b99 CY |
1029 | /* Return 1 if the given widths and heights are valid for display; |
1030 | otherwise, return 0. */ | |
1031 | ||
3f791afe | 1032 | static int |
d3da34e0 | 1033 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1034 | { |
7df4765a | 1035 | int w, h; |
f1f25b99 | 1036 | |
7df4765a | 1037 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1038 | return 0; |
1039 | ||
7df4765a | 1040 | if (INTEGERP (Vmax_image_size)) |
3f791afe PE |
1041 | return (width <= XINT (Vmax_image_size) |
1042 | && height <= XINT (Vmax_image_size)); | |
7df4765a KS |
1043 | else if (FLOATP (Vmax_image_size)) |
1044 | { | |
e5d76069 PE |
1045 | if (f != NULL) |
1046 | { | |
1047 | w = FRAME_PIXEL_WIDTH (f); | |
1048 | h = FRAME_PIXEL_HEIGHT (f); | |
1049 | } | |
1050 | else | |
1051 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
3f791afe PE |
1052 | return (width <= XFLOAT_DATA (Vmax_image_size) * w |
1053 | && height <= XFLOAT_DATA (Vmax_image_size) * h); | |
7df4765a KS |
1054 | } |
1055 | else | |
1056 | return 1; | |
f1f25b99 | 1057 | } |
4ef0d4d0 KS |
1058 | |
1059 | /* Prepare image IMG for display on frame F. Must be called before | |
1060 | drawing an image. */ | |
1061 | ||
1062 | void | |
d3da34e0 | 1063 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1064 | { |
1065 | EMACS_TIME t; | |
1066 | ||
1067 | /* We're about to display IMG, so set its timestamp to `now'. */ | |
1068 | EMACS_GET_TIME (t); | |
1069 | img->timestamp = EMACS_SECS (t); | |
1070 | ||
1071 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1072 | type dependent loader function. */ | |
1073 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1074 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 | 1075 | |
4ef0d4d0 KS |
1076 | } |
1077 | ||
1078 | ||
1079 | /* Value is the number of pixels for the ascent of image IMG when | |
1080 | drawn in face FACE. */ | |
1081 | ||
1082 | int | |
d3da34e0 | 1083 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1084 | { |
1938bc36 | 1085 | int height; |
4ef0d4d0 KS |
1086 | int ascent; |
1087 | ||
1938bc36 KS |
1088 | if (slice->height == img->height) |
1089 | height = img->height + img->vmargin; | |
1090 | else if (slice->y == 0) | |
1091 | height = slice->height + img->vmargin; | |
1092 | else | |
1093 | height = slice->height; | |
1094 | ||
4ef0d4d0 KS |
1095 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1096 | { | |
1097 | if (face->font) | |
1098 | { | |
1099 | #ifdef HAVE_NTGUI | |
1100 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1101 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1102 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1103 | #else |
1104 | /* This expression is arranged so that if the image can't be | |
1105 | exactly centered, it will be moved slightly up. This is | |
1106 | because a typical font is `top-heavy' (due to the presence | |
1107 | uppercase letters), so the image placement should err towards | |
1108 | being top-heavy too. It also just generally looks better. */ | |
5e617bc2 JB |
1109 | ascent = (height + FONT_BASE (face->font) |
1110 | - FONT_DESCENT (face->font) + 1) / 2; | |
4ef0d4d0 KS |
1111 | #endif /* HAVE_NTGUI */ |
1112 | } | |
1113 | else | |
1114 | ascent = height / 2; | |
1115 | } | |
1116 | else | |
13464394 | 1117 | ascent = height * (img->ascent / 100.0); |
4ef0d4d0 KS |
1118 | |
1119 | return ascent; | |
1120 | } | |
1121 | ||
1122 | \f | |
1123 | /* Image background colors. */ | |
1124 | ||
1125 | /* Find the "best" corner color of a bitmap. | |
1126 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1127 | ||
1128 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1129 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1130 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1131 | { |
f0c77cd1 | 1132 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1133 | int i, best_count; |
1134 | ||
6ac3c7bb KS |
1135 | if (corners && corners[BOT_CORNER] >= 0) |
1136 | { | |
1137 | /* Get the colors at the corner_pixels of ximg. */ | |
1138 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1139 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1140 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1141 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1142 | } | |
1143 | else | |
1144 | { | |
1145 | /* Get the colors at the corner_pixels of ximg. */ | |
1146 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1147 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1148 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1149 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1150 | } | |
4ef0d4d0 KS |
1151 | /* Choose the most frequently found color as background. */ |
1152 | for (i = best_count = 0; i < 4; ++i) | |
1153 | { | |
1154 | int j, n; | |
1155 | ||
1156 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1157 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1158 | ++n; |
1159 | ||
1160 | if (n > best_count) | |
6ac3c7bb | 1161 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1162 | } |
1163 | ||
1164 | return best; | |
1165 | } | |
1166 | ||
1167 | /* Portability macros */ | |
1168 | ||
1169 | #ifdef HAVE_NTGUI | |
1170 | ||
1171 | #define Destroy_Image(img_dc, prev) \ | |
1172 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1173 | ||
1174 | #define Free_Pixmap(display, pixmap) \ | |
1175 | DeleteObject (pixmap) | |
1176 | ||
edfda783 AR |
1177 | #elif defined (HAVE_NS) |
1178 | ||
1179 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1180 | ns_release_object (ximg) |
edfda783 AR |
1181 | |
1182 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1183 | ns_release_object (pixmap) |
edfda783 | 1184 | |
4ef0d4d0 KS |
1185 | #else |
1186 | ||
1187 | #define Destroy_Image(ximg, dummy) \ | |
1188 | XDestroyImage (ximg) | |
1189 | ||
1190 | #define Free_Pixmap(display, pixmap) \ | |
1191 | XFreePixmap (display, pixmap) | |
1192 | ||
edfda783 | 1193 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1194 | |
1195 | ||
1196 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1197 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1198 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1199 | use for the heuristic. */ |
4ef0d4d0 KS |
1200 | |
1201 | RGB_PIXEL_COLOR | |
d3da34e0 | 1202 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1203 | { |
1204 | if (! img->background_valid) | |
1205 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1206 | { | |
1207 | int free_ximg = !ximg; | |
1208 | #ifdef HAVE_NTGUI | |
1209 | HGDIOBJ prev; | |
1210 | #endif /* HAVE_NTGUI */ | |
1211 | ||
1212 | if (free_ximg) | |
1213 | { | |
1214 | #ifndef HAVE_NTGUI | |
1215 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1216 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1217 | #else | |
1218 | HDC frame_dc = get_frame_dc (f); | |
1219 | ximg = CreateCompatibleDC (frame_dc); | |
1220 | release_frame_dc (f, frame_dc); | |
1221 | prev = SelectObject (ximg, img->pixmap); | |
1222 | #endif /* !HAVE_NTGUI */ | |
1223 | } | |
1224 | ||
6ac3c7bb | 1225 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1226 | |
1227 | if (free_ximg) | |
1228 | Destroy_Image (ximg, prev); | |
1f026899 | 1229 | |
4ef0d4d0 KS |
1230 | img->background_valid = 1; |
1231 | } | |
1232 | ||
1233 | return img->background; | |
1234 | } | |
1235 | ||
1236 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1237 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1238 | existing XImage object to use for the heuristic. */ | |
1239 | ||
1240 | int | |
d3da34e0 | 1241 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1242 | { |
1243 | if (! img->background_transparent_valid) | |
1244 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1245 | { | |
1246 | if (img->mask) | |
1247 | { | |
1248 | int free_mask = !mask; | |
1249 | #ifdef HAVE_NTGUI | |
1250 | HGDIOBJ prev; | |
1251 | #endif /* HAVE_NTGUI */ | |
1252 | ||
1253 | if (free_mask) | |
1254 | { | |
1255 | #ifndef HAVE_NTGUI | |
1256 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1257 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1258 | #else | |
1259 | HDC frame_dc = get_frame_dc (f); | |
1260 | mask = CreateCompatibleDC (frame_dc); | |
1261 | release_frame_dc (f, frame_dc); | |
1262 | prev = SelectObject (mask, img->mask); | |
1263 | #endif /* HAVE_NTGUI */ | |
1264 | } | |
1265 | ||
1266 | img->background_transparent | |
6ac3c7bb | 1267 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1268 | |
1269 | if (free_mask) | |
1270 | Destroy_Image (mask, prev); | |
1271 | } | |
1272 | else | |
1273 | img->background_transparent = 0; | |
1274 | ||
1275 | img->background_transparent_valid = 1; | |
1276 | } | |
1277 | ||
1278 | return img->background_transparent; | |
1279 | } | |
1280 | ||
1281 | \f | |
1282 | /*********************************************************************** | |
1283 | Helper functions for X image types | |
1284 | ***********************************************************************/ | |
1285 | ||
f57e2426 J |
1286 | static void x_clear_image_1 (struct frame *, struct image *, int, |
1287 | int, int); | |
1288 | static void x_clear_image (struct frame *f, struct image *img); | |
1289 | static unsigned long x_alloc_image_color (struct frame *f, | |
1290 | struct image *img, | |
1291 | Lisp_Object color_name, | |
1292 | unsigned long dflt); | |
4ef0d4d0 KS |
1293 | |
1294 | ||
1295 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1296 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1297 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1298 | the image, if any. */ | |
1299 | ||
1300 | static void | |
d3da34e0 JB |
1301 | x_clear_image_1 (struct frame *f, struct image *img, int pixmap_p, int mask_p, |
1302 | int colors_p) | |
4ef0d4d0 KS |
1303 | { |
1304 | if (pixmap_p && img->pixmap) | |
1305 | { | |
1306 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1307 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1308 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1309 | img->background_valid = 0; |
1310 | } | |
1311 | ||
1312 | if (mask_p && img->mask) | |
1313 | { | |
1314 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1315 | img->mask = NO_PIXMAP; | |
1316 | img->background_transparent_valid = 0; | |
1317 | } | |
1318 | ||
1319 | if (colors_p && img->ncolors) | |
1320 | { | |
4ef0d4d0 KS |
1321 | /* W32_TODO: color table support. */ |
1322 | #ifdef HAVE_X_WINDOWS | |
1323 | x_free_colors (f, img->colors, img->ncolors); | |
1324 | #endif /* HAVE_X_WINDOWS */ | |
1325 | xfree (img->colors); | |
1326 | img->colors = NULL; | |
1327 | img->ncolors = 0; | |
1328 | } | |
c7fea325 | 1329 | |
4ef0d4d0 KS |
1330 | } |
1331 | ||
1332 | /* Free X resources of image IMG which is used on frame F. */ | |
1333 | ||
1334 | static void | |
d3da34e0 | 1335 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1336 | { |
1337 | BLOCK_INPUT; | |
1338 | x_clear_image_1 (f, img, 1, 1, 1); | |
1339 | UNBLOCK_INPUT; | |
1340 | } | |
1341 | ||
1342 | ||
1343 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1344 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1345 | IMG->colors, so that it can be freed again. Value is the pixel | |
1346 | color. */ | |
1347 | ||
1348 | static unsigned long | |
d3da34e0 JB |
1349 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1350 | unsigned long dflt) | |
4ef0d4d0 KS |
1351 | { |
1352 | XColor color; | |
1353 | unsigned long result; | |
1354 | ||
1355 | xassert (STRINGP (color_name)); | |
1356 | ||
3f791afe PE |
1357 | if (x_defined_color (f, SSDATA (color_name), &color, 1) |
1358 | && img->ncolors < min (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *img->colors, | |
1359 | INT_MAX)) | |
4ef0d4d0 KS |
1360 | { |
1361 | /* This isn't called frequently so we get away with simply | |
1362 | reallocating the color vector to the needed size, here. */ | |
ddff3151 | 1363 | ptrdiff_t ncolors = img->ncolors + 1; |
4ef0d4d0 KS |
1364 | img->colors = |
1365 | (unsigned long *) xrealloc (img->colors, | |
ddff3151 PE |
1366 | ncolors * sizeof *img->colors); |
1367 | img->colors[ncolors - 1] = color.pixel; | |
1368 | img->ncolors = ncolors; | |
4ef0d4d0 KS |
1369 | result = color.pixel; |
1370 | } | |
1371 | else | |
1372 | result = dflt; | |
1373 | ||
1374 | return result; | |
1375 | } | |
1376 | ||
1377 | ||
1378 | \f | |
1379 | /*********************************************************************** | |
1380 | Image Cache | |
1381 | ***********************************************************************/ | |
1382 | ||
f57e2426 J |
1383 | static void cache_image (struct frame *f, struct image *img); |
1384 | static void postprocess_image (struct frame *, struct image *); | |
4ef0d4d0 KS |
1385 | |
1386 | /* Return a new, initialized image cache that is allocated from the | |
1387 | heap. Call free_image_cache to free an image cache. */ | |
1388 | ||
1389 | struct image_cache * | |
d3da34e0 | 1390 | make_image_cache (void) |
4ef0d4d0 KS |
1391 | { |
1392 | struct image_cache *c = (struct image_cache *) xmalloc (sizeof *c); | |
1393 | int size; | |
1394 | ||
72af86bd | 1395 | memset (c, 0, sizeof *c); |
ddff3151 PE |
1396 | size = 50; |
1397 | c->images = (struct image **) xmalloc (size * sizeof *c->images); | |
1398 | c->size = size; | |
4ef0d4d0 KS |
1399 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; |
1400 | c->buckets = (struct image **) xmalloc (size); | |
72af86bd | 1401 | memset (c->buckets, 0, size); |
4ef0d4d0 KS |
1402 | return c; |
1403 | } | |
1404 | ||
1405 | ||
d3c35d17 CY |
1406 | /* Find an image matching SPEC in the cache, and return it. If no |
1407 | image is found, return NULL. */ | |
1408 | static struct image * | |
0de4bb68 | 1409 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1410 | { |
91be6b66 | 1411 | struct image *img; |
354884c4 | 1412 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1413 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1414 | ||
8198352b CY |
1415 | if (!c) return NULL; |
1416 | ||
d3c35d17 CY |
1417 | /* If the image spec does not specify a background color, the cached |
1418 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1419 | The foreground color must also match, for the sake of monochrome |
1420 | images. | |
1421 | ||
1422 | In fact, we could ignore the foreground color matching condition | |
1423 | for color images, or if the image spec specifies :foreground; | |
1424 | similarly we could ignore the background color matching condition | |
1425 | for formats that don't use transparency (such as jpeg), or if the | |
1426 | image spec specifies :background. However, the extra memory | |
1427 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1428 | |
483e7ae0 | 1429 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1430 | if (img->hash == hash |
1431 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1432 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1433 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1434 | break; |
1435 | return img; | |
1436 | } | |
1437 | ||
1438 | ||
1439 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1440 | ||
1441 | static void | |
d3da34e0 | 1442 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1443 | { |
1444 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1445 | if (img) | |
be3faa80 CY |
1446 | { |
1447 | free_image (f, img); | |
1448 | /* As display glyphs may still be referring to the image ID, we | |
1449 | must garbage the frame (Bug#6426). */ | |
1450 | SET_FRAME_GARBAGED (f); | |
1451 | } | |
483e7ae0 CY |
1452 | } |
1453 | ||
1454 | ||
4ef0d4d0 KS |
1455 | /* Free image cache of frame F. Be aware that X frames share images |
1456 | caches. */ | |
1457 | ||
1458 | void | |
d3da34e0 | 1459 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1460 | { |
354884c4 | 1461 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1462 | if (c) |
1463 | { | |
13464394 | 1464 | ptrdiff_t i; |
4ef0d4d0 KS |
1465 | |
1466 | /* Cache should not be referenced by any frame when freed. */ | |
1467 | xassert (c->refcount == 0); | |
1468 | ||
1469 | for (i = 0; i < c->used; ++i) | |
1470 | free_image (f, c->images[i]); | |
1471 | xfree (c->images); | |
1472 | xfree (c->buckets); | |
1473 | xfree (c); | |
354884c4 | 1474 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1475 | } |
1476 | } | |
1477 | ||
1478 | ||
a2bc5bdd SM |
1479 | /* Clear image cache of frame F. FILTER=t means free all images. |
1480 | FILTER=nil means clear only images that haven't been | |
1481 | displayed for some time. | |
1482 | Else, only free the images which have FILTER in their `dependencies'. | |
1483 | Should be called from time to time to reduce the number of loaded images. | |
1484 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1485 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1486 | |
ce0ad53d | 1487 | static void |
a2bc5bdd | 1488 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1489 | { |
354884c4 | 1490 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1491 | |
98fe5161 | 1492 | if (c) |
4ef0d4d0 | 1493 | { |
13464394 | 1494 | ptrdiff_t i, nfreed = 0; |
4ef0d4d0 KS |
1495 | |
1496 | /* Block input so that we won't be interrupted by a SIGIO | |
1497 | while being in an inconsistent state. */ | |
1498 | BLOCK_INPUT; | |
1499 | ||
98fe5161 CY |
1500 | if (!NILP (filter)) |
1501 | { | |
1502 | /* Filter image cache. */ | |
1503 | for (i = 0; i < c->used; ++i) | |
1504 | { | |
1505 | struct image *img = c->images[i]; | |
1506 | if (img && (EQ (Qt, filter) | |
1507 | || !NILP (Fmember (filter, img->dependencies)))) | |
1508 | { | |
1509 | free_image (f, img); | |
1510 | ++nfreed; | |
1511 | } | |
1512 | } | |
1513 | } | |
1514 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1515 | { |
98fe5161 CY |
1516 | /* Free cache based on timestamp. */ |
1517 | EMACS_TIME t; | |
13464394 PE |
1518 | double old, delay; |
1519 | ptrdiff_t nimages = 0; | |
98fe5161 CY |
1520 | |
1521 | for (i = 0; i < c->used; ++i) | |
1522 | if (c->images[i]) | |
1523 | nimages++; | |
1524 | ||
1525 | /* If the number of cached images has grown unusually large, | |
1526 | decrease the cache eviction delay (Bug#6230). */ | |
13464394 | 1527 | delay = XINT (Vimage_cache_eviction_delay); |
98fe5161 | 1528 | if (nimages > 40) |
13464394 PE |
1529 | delay = 1600 * delay / nimages / nimages; |
1530 | delay = max (delay, 1); | |
98fe5161 CY |
1531 | |
1532 | EMACS_GET_TIME (t); | |
1533 | old = EMACS_SECS (t) - delay; | |
1534 | ||
1535 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1536 | { |
98fe5161 CY |
1537 | struct image *img = c->images[i]; |
1538 | if (img && img->timestamp < old) | |
1539 | { | |
1540 | free_image (f, img); | |
1541 | ++nfreed; | |
1542 | } | |
4ef0d4d0 KS |
1543 | } |
1544 | } | |
1545 | ||
1546 | /* We may be clearing the image cache because, for example, | |
1547 | Emacs was iconified for a longer period of time. In that | |
1548 | case, current matrices may still contain references to | |
1549 | images freed above. So, clear these matrices. */ | |
1550 | if (nfreed) | |
1551 | { | |
1552 | Lisp_Object tail, frame; | |
1553 | ||
1554 | FOR_EACH_FRAME (tail, frame) | |
1555 | { | |
6ae141d6 PE |
1556 | struct frame *fr = XFRAME (frame); |
1557 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1558 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1559 | } |
1560 | ||
1561 | ++windows_or_buffers_changed; | |
1562 | } | |
1563 | ||
1564 | UNBLOCK_INPUT; | |
1565 | } | |
1566 | } | |
1567 | ||
354884c4 | 1568 | void |
a2bc5bdd | 1569 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1570 | { |
1571 | /* FIXME: We want to do | |
1572 | * struct terminal *t; | |
1573 | * for (t = terminal_list; t; t = t->next_terminal) | |
1574 | * clear_image_cache (t, filter); */ | |
1575 | Lisp_Object tail, frame; | |
1576 | FOR_EACH_FRAME (tail, frame) | |
1577 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1578 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1579 | } |
4ef0d4d0 KS |
1580 | |
1581 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1582 | 0, 1, 0, | |
a2bc5bdd SM |
1583 | doc: /* Clear the image cache. |
1584 | FILTER nil or a frame means clear all images in the selected frame. | |
1585 | FILTER t means clear the image caches of all frames. | |
1586 | Anything else, means only clear those images which refer to FILTER, | |
1587 | which is then usually a filename. */) | |
5842a27b | 1588 | (Lisp_Object filter) |
4ef0d4d0 | 1589 | { |
a2bc5bdd SM |
1590 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1591 | clear_image_caches (filter); | |
4ef0d4d0 | 1592 | else |
a2bc5bdd | 1593 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1594 | |
1595 | return Qnil; | |
1596 | } | |
1597 | ||
1598 | ||
110683ad | 1599 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1600 | 1, 2, 0, |
110683ad CY |
1601 | doc: /* Fush the image with specification SPEC on frame FRAME. |
1602 | This removes the image from the Emacs image cache. If SPEC specifies | |
1603 | an image file, the next redisplay of this image will read from the | |
1604 | current contents of that file. | |
1605 | ||
483e7ae0 CY |
1606 | FRAME nil or omitted means use the selected frame. |
1607 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1608 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1609 | { |
1610 | if (!valid_image_p (spec)) | |
1611 | error ("Invalid image specification"); | |
1612 | ||
1613 | if (EQ (frame, Qt)) | |
1614 | { | |
1615 | Lisp_Object tail; | |
1616 | FOR_EACH_FRAME (tail, frame) | |
1617 | { | |
1618 | struct frame *f = XFRAME (frame); | |
1619 | if (FRAME_WINDOW_P (f)) | |
1620 | uncache_image (f, spec); | |
1621 | } | |
1622 | } | |
1623 | else | |
1624 | uncache_image (check_x_frame (frame), spec); | |
1625 | ||
1626 | return Qnil; | |
1627 | } | |
1628 | ||
1629 | ||
4ef0d4d0 KS |
1630 | /* Compute masks and transform image IMG on frame F, as specified |
1631 | by the image's specification, */ | |
1632 | ||
1633 | static void | |
d3da34e0 | 1634 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1635 | { |
1636 | /* Manipulation of the image's mask. */ | |
1637 | if (img->pixmap) | |
1638 | { | |
1639 | Lisp_Object conversion, spec; | |
1640 | Lisp_Object mask; | |
1641 | ||
1642 | spec = img->spec; | |
1643 | ||
1644 | /* `:heuristic-mask t' | |
1645 | `:mask heuristic' | |
1646 | means build a mask heuristically. | |
1647 | `:heuristic-mask (R G B)' | |
1648 | `:mask (heuristic (R G B))' | |
1649 | means build a mask from color (R G B) in the | |
1650 | image. | |
1651 | `:mask nil' | |
1652 | means remove a mask, if any. */ | |
1653 | ||
1654 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1655 | if (!NILP (mask)) | |
1656 | x_build_heuristic_mask (f, img, mask); | |
1657 | else | |
1658 | { | |
1659 | int found_p; | |
1660 | ||
1661 | mask = image_spec_value (spec, QCmask, &found_p); | |
1662 | ||
1663 | if (EQ (mask, Qheuristic)) | |
1664 | x_build_heuristic_mask (f, img, Qt); | |
1665 | else if (CONSP (mask) | |
1666 | && EQ (XCAR (mask), Qheuristic)) | |
1667 | { | |
1668 | if (CONSP (XCDR (mask))) | |
1669 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1670 | else | |
1671 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1672 | } | |
1673 | else if (NILP (mask) && found_p && img->mask) | |
1674 | { | |
1675 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1676 | img->mask = NO_PIXMAP; | |
1677 | } | |
1678 | } | |
1679 | ||
1680 | ||
1681 | /* Should we apply an image transformation algorithm? */ | |
1682 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1683 | if (EQ (conversion, Qdisabled)) | |
1684 | x_disable_image (f, img); | |
1685 | else if (EQ (conversion, Qlaplace)) | |
1686 | x_laplace (f, img); | |
1687 | else if (EQ (conversion, Qemboss)) | |
1688 | x_emboss (f, img); | |
1689 | else if (CONSP (conversion) | |
1690 | && EQ (XCAR (conversion), Qedge_detection)) | |
1691 | { | |
1692 | Lisp_Object tem; | |
1693 | tem = XCDR (conversion); | |
1694 | if (CONSP (tem)) | |
1695 | x_edge_detection (f, img, | |
1696 | Fplist_get (tem, QCmatrix), | |
1697 | Fplist_get (tem, QCcolor_adjustment)); | |
1698 | } | |
1699 | } | |
1700 | } | |
1701 | ||
1702 | ||
1703 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1704 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1705 | ||
13464394 | 1706 | ptrdiff_t |
d3da34e0 | 1707 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1708 | { |
4ef0d4d0 | 1709 | struct image *img; |
0de4bb68 | 1710 | EMACS_UINT hash; |
4ef0d4d0 KS |
1711 | EMACS_TIME now; |
1712 | ||
1713 | /* F must be a window-system frame, and SPEC must be a valid image | |
1714 | specification. */ | |
1715 | xassert (FRAME_WINDOW_P (f)); | |
1716 | xassert (valid_image_p (spec)); | |
1717 | ||
4ef0d4d0 KS |
1718 | /* Look up SPEC in the hash table of the image cache. */ |
1719 | hash = sxhash (spec, 0); | |
d3c35d17 | 1720 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1721 | if (img && img->load_failed_p) |
1722 | { | |
1723 | free_image (f, img); | |
1724 | img = NULL; | |
1725 | } | |
1726 | ||
4ef0d4d0 KS |
1727 | /* If not found, create a new image and cache it. */ |
1728 | if (img == NULL) | |
1729 | { | |
4ef0d4d0 KS |
1730 | BLOCK_INPUT; |
1731 | img = make_image (spec, hash); | |
1732 | cache_image (f, img); | |
1733 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1734 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1735 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1736 | |
1737 | /* If we can't load the image, and we don't have a width and | |
1738 | height, use some arbitrary width and height so that we can | |
1739 | draw a rectangle for it. */ | |
1740 | if (img->load_failed_p) | |
1741 | { | |
1742 | Lisp_Object value; | |
1743 | ||
1744 | value = image_spec_value (spec, QCwidth, NULL); | |
1745 | img->width = (INTEGERP (value) | |
1746 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1747 | value = image_spec_value (spec, QCheight, NULL); | |
1748 | img->height = (INTEGERP (value) | |
1749 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1750 | } | |
1751 | else | |
1752 | { | |
1753 | /* Handle image type independent image attributes | |
1754 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1755 | `:background COLOR'. */ | |
1756 | Lisp_Object ascent, margin, relief, bg; | |
d311d28c | 1757 | int relief_bound; |
4ef0d4d0 KS |
1758 | |
1759 | ascent = image_spec_value (spec, QCascent, NULL); | |
1760 | if (INTEGERP (ascent)) | |
1761 | img->ascent = XFASTINT (ascent); | |
1762 | else if (EQ (ascent, Qcenter)) | |
1763 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1764 | ||
1765 | margin = image_spec_value (spec, QCmargin, NULL); | |
13464394 | 1766 | if (INTEGERP (margin)) |
4ef0d4d0 | 1767 | img->vmargin = img->hmargin = XFASTINT (margin); |
13464394 | 1768 | else if (CONSP (margin)) |
4ef0d4d0 | 1769 | { |
13464394 PE |
1770 | img->hmargin = XFASTINT (XCAR (margin)); |
1771 | img->vmargin = XFASTINT (XCDR (margin)); | |
4ef0d4d0 KS |
1772 | } |
1773 | ||
1774 | relief = image_spec_value (spec, QCrelief, NULL); | |
d311d28c PE |
1775 | relief_bound = INT_MAX - max (img->hmargin, img->vmargin); |
1776 | if (RANGED_INTEGERP (- relief_bound, relief, relief_bound)) | |
4ef0d4d0 KS |
1777 | { |
1778 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1779 | img->hmargin += eabs (img->relief); |
1780 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1781 | } |
1782 | ||
1783 | if (! img->background_valid) | |
1784 | { | |
1785 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1786 | if (!NILP (bg)) | |
1787 | { | |
1788 | img->background | |
1789 | = x_alloc_image_color (f, img, bg, | |
1790 | FRAME_BACKGROUND_PIXEL (f)); | |
1791 | img->background_valid = 1; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | /* Do image transformations and compute masks, unless we | |
1796 | don't have the image yet. */ | |
1797 | if (!EQ (*img->type->type, Qpostscript)) | |
1798 | postprocess_image (f, img); | |
1799 | } | |
1800 | ||
1801 | UNBLOCK_INPUT; | |
1802 | } | |
1803 | ||
1804 | /* We're using IMG, so set its timestamp to `now'. */ | |
1805 | EMACS_GET_TIME (now); | |
1806 | img->timestamp = EMACS_SECS (now); | |
1807 | ||
4ef0d4d0 KS |
1808 | /* Value is the image id. */ |
1809 | return img->id; | |
1810 | } | |
1811 | ||
1812 | ||
1813 | /* Cache image IMG in the image cache of frame F. */ | |
1814 | ||
1815 | static void | |
d3da34e0 | 1816 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1817 | { |
354884c4 | 1818 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 | 1819 | ptrdiff_t i; |
4ef0d4d0 KS |
1820 | |
1821 | /* Find a free slot in c->images. */ | |
1822 | for (i = 0; i < c->used; ++i) | |
1823 | if (c->images[i] == NULL) | |
1824 | break; | |
1825 | ||
1826 | /* If no free slot found, maybe enlarge c->images. */ | |
1827 | if (i == c->used && c->used == c->size) | |
a69fbedb | 1828 | c->images = xpalloc (c->images, &c->size, 1, -1, sizeof *c->images); |
4ef0d4d0 KS |
1829 | |
1830 | /* Add IMG to c->images, and assign IMG an id. */ | |
1831 | c->images[i] = img; | |
1832 | img->id = i; | |
1833 | if (i == c->used) | |
1834 | ++c->used; | |
1835 | ||
1836 | /* Add IMG to the cache's hash table. */ | |
1837 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1838 | img->next = c->buckets[i]; | |
1839 | if (img->next) | |
1840 | img->next->prev = img; | |
1841 | img->prev = NULL; | |
1842 | c->buckets[i] = img; | |
1843 | } | |
1844 | ||
1845 | ||
1846 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1847 | Lisp Objects in the image cache. */ | |
1848 | ||
354884c4 SM |
1849 | /* Mark Lisp objects in image IMG. */ |
1850 | ||
1851 | static void | |
d3da34e0 | 1852 | mark_image (struct image *img) |
354884c4 SM |
1853 | { |
1854 | mark_object (img->spec); | |
a2bc5bdd | 1855 | mark_object (img->dependencies); |
354884c4 | 1856 | |
b50691aa CY |
1857 | if (!NILP (img->lisp_data)) |
1858 | mark_object (img->lisp_data); | |
354884c4 SM |
1859 | } |
1860 | ||
1861 | ||
4ef0d4d0 | 1862 | void |
354884c4 | 1863 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1864 | { |
354884c4 | 1865 | if (c) |
4ef0d4d0 | 1866 | { |
13464394 | 1867 | ptrdiff_t i; |
354884c4 SM |
1868 | for (i = 0; i < c->used; ++i) |
1869 | if (c->images[i]) | |
1870 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1871 | } |
1872 | } | |
1873 | ||
1874 | ||
1875 | \f | |
1876 | /*********************************************************************** | |
9e2a2647 | 1877 | X / NS / W32 support code |
4ef0d4d0 KS |
1878 | ***********************************************************************/ |
1879 | ||
1880 | #ifdef HAVE_NTGUI | |
1881 | ||
1882 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1883 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1884 | |
1885 | /* Macro for loading those image functions from the library. */ | |
1886 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1887 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1888 | if (!fn_##func) return 0; \ | |
1889 | } | |
1890 | ||
1891 | #endif /* HAVE_NTGUI */ | |
1892 | ||
f57e2426 J |
1893 | static int x_create_x_image_and_pixmap (struct frame *, int, int, int, |
1894 | XImagePtr *, Pixmap *); | |
1895 | static void x_destroy_x_image (XImagePtr); | |
1896 | static void x_put_x_image (struct frame *, XImagePtr, Pixmap, int, int); | |
4ef0d4d0 | 1897 | |
476371c4 PE |
1898 | /* Return nonzero if XIMG's size WIDTH x HEIGHT doesn't break the |
1899 | windowing system. | |
ca4aa935 PE |
1900 | WIDTH and HEIGHT must both be positive. |
1901 | If XIMG is null, assume it is a bitmap. */ | |
1902 | static int | |
1903 | x_check_image_size (XImagePtr ximg, int width, int height) | |
1904 | { | |
476371c4 | 1905 | #ifdef HAVE_X_WINDOWS |
ca4aa935 PE |
1906 | /* Respect Xlib's limits: it cannot deal with images that have more |
1907 | than INT_MAX (and/or UINT_MAX) bytes. And respect Emacs's limits | |
476371c4 | 1908 | of PTRDIFF_MAX (and/or SIZE_MAX) bytes for any object. */ |
ca4aa935 PE |
1909 | enum |
1910 | { | |
1911 | XLIB_BYTES_MAX = min (INT_MAX, UINT_MAX), | |
1912 | X_IMAGE_BYTES_MAX = min (XLIB_BYTES_MAX, min (PTRDIFF_MAX, SIZE_MAX)) | |
1913 | }; | |
1914 | ||
1915 | int bitmap_pad, depth, bytes_per_line; | |
1916 | if (ximg) | |
1917 | { | |
1918 | bitmap_pad = ximg->bitmap_pad; | |
1919 | depth = ximg->depth; | |
1920 | bytes_per_line = ximg->bytes_per_line; | |
1921 | } | |
1922 | else | |
1923 | { | |
1924 | bitmap_pad = 8; | |
1925 | depth = 1; | |
1926 | bytes_per_line = (width >> 3) + ((width & 7) != 0); | |
1927 | } | |
1928 | return (width <= (INT_MAX - (bitmap_pad - 1)) / depth | |
1929 | && height <= X_IMAGE_BYTES_MAX / bytes_per_line); | |
476371c4 PE |
1930 | #else |
1931 | /* FIXME: Implement this check for the HAVE_NS and HAVE_NTGUI cases. | |
1932 | For now, assume that every image size is allowed on these systems. */ | |
1933 | return 1; | |
1934 | #endif | |
ca4aa935 | 1935 | } |
4ef0d4d0 KS |
1936 | |
1937 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1938 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1939 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1940 | via xmalloc. Print error messages via image_error if an error | |
1941 | occurs. Value is non-zero if successful. | |
1942 | ||
1943 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1944 | should indicate the bit depth of the image. */ | |
1945 | ||
1946 | static int | |
d3da34e0 JB |
1947 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1948 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1949 | { |
1950 | #ifdef HAVE_X_WINDOWS | |
1951 | Display *display = FRAME_X_DISPLAY (f); | |
1952 | Window window = FRAME_X_WINDOW (f); | |
1953 | Screen *screen = FRAME_X_SCREEN (f); | |
1954 | ||
1955 | xassert (interrupt_input_blocked); | |
1956 | ||
1957 | if (depth <= 0) | |
1958 | depth = DefaultDepthOfScreen (screen); | |
1959 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1960 | depth, ZPixmap, 0, NULL, width, height, | |
1961 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1962 | if (*ximg == NULL) | |
1963 | { | |
1964 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1965 | return 0; | |
1966 | } | |
1967 | ||
ca4aa935 PE |
1968 | if (! x_check_image_size (*ximg, width, height)) |
1969 | { | |
1970 | x_destroy_x_image (*ximg); | |
1971 | *ximg = NULL; | |
1972 | image_error ("Image too large (%dx%d)", | |
1973 | make_number (width), make_number (height)); | |
1974 | return 0; | |
1975 | } | |
1976 | ||
4ef0d4d0 KS |
1977 | /* Allocate image raster. */ |
1978 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
1979 | ||
1980 | /* Allocate a pixmap of the same size. */ | |
1981 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1982 | if (*pixmap == NO_PIXMAP) | |
1983 | { | |
1984 | x_destroy_x_image (*ximg); | |
1985 | *ximg = NULL; | |
1986 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1987 | return 0; | |
1988 | } | |
1989 | ||
1990 | return 1; | |
1991 | #endif /* HAVE_X_WINDOWS */ | |
1992 | ||
1993 | #ifdef HAVE_NTGUI | |
1994 | ||
1995 | BITMAPINFOHEADER *header; | |
1996 | HDC hdc; | |
1997 | int scanline_width_bits; | |
1998 | int remainder; | |
1999 | int palette_colors = 0; | |
2000 | ||
2001 | if (depth == 0) | |
2002 | depth = 24; | |
2003 | ||
2004 | if (depth != 1 && depth != 4 && depth != 8 | |
2005 | && depth != 16 && depth != 24 && depth != 32) | |
2006 | { | |
2007 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
2008 | return 0; | |
2009 | } | |
2010 | ||
2011 | scanline_width_bits = width * depth; | |
2012 | remainder = scanline_width_bits % 32; | |
2013 | ||
2014 | if (remainder) | |
2015 | scanline_width_bits += 32 - remainder; | |
2016 | ||
2017 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2018 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2019 | if (depth < 16) | |
657d08d3 | 2020 | palette_colors = 1 << (depth - 1); |
4ef0d4d0 KS |
2021 | |
2022 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
4ef0d4d0 | 2023 | |
72af86bd AS |
2024 | header = &(*ximg)->info.bmiHeader; |
2025 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
2026 | header->biSize = sizeof (*header); |
2027 | header->biWidth = width; | |
2028 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2029 | header->biPlanes = 1; | |
2030 | header->biBitCount = depth; | |
2031 | header->biCompression = BI_RGB; | |
2032 | header->biClrUsed = palette_colors; | |
2033 | ||
2034 | /* TODO: fill in palette. */ | |
2035 | if (depth == 1) | |
2036 | { | |
2037 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2038 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2039 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2040 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2041 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2042 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2043 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2044 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2045 | } | |
2046 | ||
2047 | hdc = get_frame_dc (f); | |
2048 | ||
2049 | /* Create a DIBSection and raster array for the bitmap, | |
2050 | and store its handle in *pixmap. */ | |
2051 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2052 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2053 | /* casting avoids a GCC warning */ |
2054 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2055 | |
2056 | /* Realize display palette and garbage all frames. */ | |
2057 | release_frame_dc (f, hdc); | |
2058 | ||
2059 | if (*pixmap == NULL) | |
2060 | { | |
5fc9fdeb | 2061 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2062 | Lisp_Object errcode; |
2063 | /* All system errors are < 10000, so the following is safe. */ | |
13464394 | 2064 | XSETINT (errcode, err); |
4ef0d4d0 KS |
2065 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); |
2066 | x_destroy_x_image (*ximg); | |
2067 | return 0; | |
2068 | } | |
2069 | ||
2070 | return 1; | |
2071 | ||
2072 | #endif /* HAVE_NTGUI */ | |
2073 | ||
edfda783 | 2074 | #ifdef HAVE_NS |
ed3751c8 | 2075 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2076 | if (*pixmap == 0) |
2077 | { | |
2078 | *ximg = NULL; | |
2079 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2080 | return 0; | |
2081 | } | |
2082 | *ximg = *pixmap; | |
2083 | return 1; | |
2084 | #endif | |
4ef0d4d0 KS |
2085 | } |
2086 | ||
2087 | ||
2088 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2089 | ||
2090 | static void | |
d3da34e0 | 2091 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 KS |
2092 | { |
2093 | xassert (interrupt_input_blocked); | |
2094 | if (ximg) | |
2095 | { | |
2096 | #ifdef HAVE_X_WINDOWS | |
2097 | xfree (ximg->data); | |
2098 | ximg->data = NULL; | |
2099 | XDestroyImage (ximg); | |
2100 | #endif /* HAVE_X_WINDOWS */ | |
2101 | #ifdef HAVE_NTGUI | |
2102 | /* Data will be freed by DestroyObject. */ | |
2103 | ximg->data = NULL; | |
2104 | xfree (ximg); | |
2105 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2106 | #ifdef HAVE_NS |
ed3751c8 | 2107 | ns_release_object (ximg); |
edfda783 | 2108 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2109 | } |
2110 | } | |
2111 | ||
2112 | ||
2113 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2114 | are width and height of both the image and pixmap. */ | |
2115 | ||
2116 | static void | |
d3da34e0 | 2117 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2118 | { |
2119 | #ifdef HAVE_X_WINDOWS | |
2120 | GC gc; | |
2121 | ||
2122 | xassert (interrupt_input_blocked); | |
2123 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2124 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2125 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2126 | #endif /* HAVE_X_WINDOWS */ | |
2127 | ||
2128 | #ifdef HAVE_NTGUI | |
2129 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2130 | HDC hdc = get_frame_dc (f); | |
2131 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2132 | release_frame_dc (f, hdc); | |
2133 | #endif | |
2134 | #endif /* HAVE_NTGUI */ | |
2135 | ||
edfda783 AR |
2136 | #ifdef HAVE_NS |
2137 | xassert (ximg == pixmap); | |
ed3751c8 | 2138 | ns_retain_object (ximg); |
edfda783 | 2139 | #endif |
4ef0d4d0 KS |
2140 | } |
2141 | ||
2142 | \f | |
2143 | /*********************************************************************** | |
2144 | File Handling | |
2145 | ***********************************************************************/ | |
2146 | ||
6678dc11 | 2147 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2148 | x-bitmap-file-path. Value is the encoded full name of the file |
2149 | found, or nil if not found. */ | |
4ef0d4d0 | 2150 | |
c640aa9b | 2151 | Lisp_Object |
d3da34e0 | 2152 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2153 | { |
2154 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2155 | int fd; |
2156 | ||
6678dc11 GM |
2157 | /* TODO I think this should use something like image-load-path |
2158 | instead. Unfortunately, that can contain non-string elements. */ | |
2159 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2160 | Vdata_directory), | |
2161 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2162 | |
050b82f6 | 2163 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2164 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2165 | ||
2166 | if (fd == -1) | |
2167 | file_found = Qnil; | |
2168 | else | |
022af124 KH |
2169 | { |
2170 | file_found = ENCODE_FILE (file_found); | |
2171 | close (fd); | |
2172 | } | |
4ef0d4d0 | 2173 | |
4ef0d4d0 KS |
2174 | return file_found; |
2175 | } | |
2176 | ||
2177 | ||
2178 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2179 | with xmalloc holding FILE's contents. Value is null if an error | |
2180 | occurred. *SIZE is set to the size of the file. */ | |
2181 | ||
2182 | static unsigned char * | |
dd52fcea | 2183 | slurp_file (char *file, ptrdiff_t *size) |
4ef0d4d0 KS |
2184 | { |
2185 | FILE *fp = NULL; | |
2186 | unsigned char *buf = NULL; | |
2187 | struct stat st; | |
2188 | ||
2189 | if (stat (file, &st) == 0 | |
2190 | && (fp = fopen (file, "rb")) != NULL | |
dd52fcea | 2191 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
fa8459a3 | 2192 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2193 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2194 | { | |
2195 | *size = st.st_size; | |
2196 | fclose (fp); | |
2197 | } | |
2198 | else | |
2199 | { | |
2200 | if (fp) | |
2201 | fclose (fp); | |
2202 | if (buf) | |
2203 | { | |
2204 | xfree (buf); | |
2205 | buf = NULL; | |
2206 | } | |
2207 | } | |
2208 | ||
2209 | return buf; | |
2210 | } | |
2211 | ||
2212 | ||
2213 | \f | |
4ef0d4d0 KS |
2214 | /*********************************************************************** |
2215 | XBM images | |
2216 | ***********************************************************************/ | |
2217 | ||
f57e2426 J |
2218 | static int xbm_scan (unsigned char **, unsigned char *, char *, int *); |
2219 | static int xbm_load (struct frame *f, struct image *img); | |
2220 | static int xbm_load_image (struct frame *f, struct image *img, | |
2221 | unsigned char *, unsigned char *); | |
2222 | static int xbm_image_p (Lisp_Object object); | |
2223 | static int xbm_read_bitmap_data (struct frame *f, | |
2224 | unsigned char *, unsigned char *, | |
b8dc29e9 | 2225 | int *, int *, char **, int); |
f57e2426 | 2226 | static int xbm_file_p (Lisp_Object); |
4ef0d4d0 KS |
2227 | |
2228 | ||
2229 | /* Indices of image specification fields in xbm_format, below. */ | |
2230 | ||
2231 | enum xbm_keyword_index | |
2232 | { | |
2233 | XBM_TYPE, | |
2234 | XBM_FILE, | |
2235 | XBM_WIDTH, | |
2236 | XBM_HEIGHT, | |
2237 | XBM_DATA, | |
2238 | XBM_FOREGROUND, | |
2239 | XBM_BACKGROUND, | |
2240 | XBM_ASCENT, | |
2241 | XBM_MARGIN, | |
2242 | XBM_RELIEF, | |
2243 | XBM_ALGORITHM, | |
2244 | XBM_HEURISTIC_MASK, | |
2245 | XBM_MASK, | |
2246 | XBM_LAST | |
2247 | }; | |
2248 | ||
2249 | /* Vector of image_keyword structures describing the format | |
2250 | of valid XBM image specifications. */ | |
2251 | ||
91433552 | 2252 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2253 | { |
2254 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2255 | {":file", IMAGE_STRING_VALUE, 0}, | |
2256 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2257 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2258 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2259 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2260 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2261 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 2262 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
2263 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
2264 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2265 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2266 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2267 | }; | |
2268 | ||
2269 | /* Structure describing the image type XBM. */ | |
2270 | ||
2271 | static struct image_type xbm_type = | |
2272 | { | |
2273 | &Qxbm, | |
2274 | xbm_image_p, | |
2275 | xbm_load, | |
2276 | x_clear_image, | |
2277 | NULL | |
2278 | }; | |
2279 | ||
2280 | /* Tokens returned from xbm_scan. */ | |
2281 | ||
2282 | enum xbm_token | |
2283 | { | |
2284 | XBM_TK_IDENT = 256, | |
2285 | XBM_TK_NUMBER | |
2286 | }; | |
2287 | ||
2288 | ||
2289 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2290 | A valid specification is a list starting with the symbol `image' | |
2291 | The rest of the list is a property list which must contain an | |
2292 | entry `:type xbm.. | |
2293 | ||
2294 | If the specification specifies a file to load, it must contain | |
2295 | an entry `:file FILENAME' where FILENAME is a string. | |
2296 | ||
2297 | If the specification is for a bitmap loaded from memory it must | |
2298 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2299 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2300 | ||
2301 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2302 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2303 | ||
2304 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2305 | ||
2306 | 3. a vector of strings or bool-vectors, one for each line of the | |
2307 | bitmap. | |
2308 | ||
bbe6f2aa | 2309 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2310 | may not be specified in this case because they are defined in the |
2311 | XBM file. | |
2312 | ||
2313 | Both the file and data forms may contain the additional entries | |
2314 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2315 | foreground and background of the frame on which the image is | |
2316 | displayed is used. */ | |
2317 | ||
2318 | static int | |
d3da34e0 | 2319 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2320 | { |
2321 | struct image_keyword kw[XBM_LAST]; | |
2322 | ||
72af86bd | 2323 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2324 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2325 | return 0; | |
2326 | ||
2327 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2328 | ||
2329 | if (kw[XBM_FILE].count) | |
2330 | { | |
2331 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2332 | return 0; | |
2333 | } | |
2334 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2335 | { | |
2336 | /* In-memory XBM file. */ | |
2337 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2338 | return 0; | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | Lisp_Object data; | |
13464394 | 2343 | int width, height; |
4ef0d4d0 KS |
2344 | |
2345 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2346 | if (!kw[XBM_WIDTH].count | |
2347 | || !kw[XBM_HEIGHT].count | |
2348 | || !kw[XBM_DATA].count) | |
2349 | return 0; | |
2350 | ||
2351 | data = kw[XBM_DATA].value; | |
2352 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2353 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2354 | ||
2355 | /* Check type of data, and width and height against contents of | |
2356 | data. */ | |
2357 | if (VECTORP (data)) | |
2358 | { | |
45aebb64 | 2359 | EMACS_INT i; |
4ef0d4d0 KS |
2360 | |
2361 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2362 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2363 | return 0; |
2364 | ||
2365 | /* Each string or bool-vector in data must be large enough | |
2366 | for one line of the image. */ | |
2367 | for (i = 0; i < height; ++i) | |
2368 | { | |
2369 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2370 | ||
2371 | if (STRINGP (elt)) | |
2372 | { | |
2373 | if (SCHARS (elt) | |
2374 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2375 | return 0; | |
2376 | } | |
2377 | else if (BOOL_VECTOR_P (elt)) | |
2378 | { | |
2379 | if (XBOOL_VECTOR (elt)->size < width) | |
2380 | return 0; | |
2381 | } | |
2382 | else | |
2383 | return 0; | |
2384 | } | |
2385 | } | |
2386 | else if (STRINGP (data)) | |
2387 | { | |
2388 | if (SCHARS (data) | |
2389 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2390 | return 0; | |
2391 | } | |
2392 | else if (BOOL_VECTOR_P (data)) | |
2393 | { | |
ca4aa935 | 2394 | if (XBOOL_VECTOR (data)->size / height < width) |
4ef0d4d0 KS |
2395 | return 0; |
2396 | } | |
2397 | else | |
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | return 1; | |
2402 | } | |
2403 | ||
2404 | ||
2405 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2406 | either an enumerator from enum xbm_token, or a character for a | |
2407 | single-character token, or 0 at end of file. If scanning an | |
2408 | identifier, store the lexeme of the identifier in SVAL. If | |
2409 | scanning a number, store its value in *IVAL. */ | |
2410 | ||
2411 | static int | |
d3da34e0 | 2412 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2413 | { |
2414 | unsigned int c; | |
2415 | ||
2416 | loop: | |
2417 | ||
2418 | /* Skip white space. */ | |
2419 | while (*s < end && (c = *(*s)++, isspace (c))) | |
2420 | ; | |
2421 | ||
2422 | if (*s >= end) | |
2423 | c = 0; | |
2424 | else if (isdigit (c)) | |
2425 | { | |
2426 | int value = 0, digit; | |
2427 | ||
2428 | if (c == '0' && *s < end) | |
2429 | { | |
2430 | c = *(*s)++; | |
2431 | if (c == 'x' || c == 'X') | |
2432 | { | |
2433 | while (*s < end) | |
2434 | { | |
2435 | c = *(*s)++; | |
2436 | if (isdigit (c)) | |
2437 | digit = c - '0'; | |
2438 | else if (c >= 'a' && c <= 'f') | |
2439 | digit = c - 'a' + 10; | |
2440 | else if (c >= 'A' && c <= 'F') | |
2441 | digit = c - 'A' + 10; | |
2442 | else | |
2443 | break; | |
2444 | value = 16 * value + digit; | |
2445 | } | |
2446 | } | |
2447 | else if (isdigit (c)) | |
2448 | { | |
2449 | value = c - '0'; | |
2450 | while (*s < end | |
2451 | && (c = *(*s)++, isdigit (c))) | |
2452 | value = 8 * value + c - '0'; | |
2453 | } | |
2454 | } | |
2455 | else | |
2456 | { | |
2457 | value = c - '0'; | |
2458 | while (*s < end | |
2459 | && (c = *(*s)++, isdigit (c))) | |
2460 | value = 10 * value + c - '0'; | |
2461 | } | |
2462 | ||
2463 | if (*s < end) | |
2464 | *s = *s - 1; | |
2465 | *ival = value; | |
2466 | c = XBM_TK_NUMBER; | |
2467 | } | |
2468 | else if (isalpha (c) || c == '_') | |
2469 | { | |
2470 | *sval++ = c; | |
2471 | while (*s < end | |
2472 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
2473 | *sval++ = c; | |
2474 | *sval = 0; | |
2475 | if (*s < end) | |
2476 | *s = *s - 1; | |
2477 | c = XBM_TK_IDENT; | |
2478 | } | |
2479 | else if (c == '/' && **s == '*') | |
2480 | { | |
2481 | /* C-style comment. */ | |
2482 | ++*s; | |
2483 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2484 | ++*s; | |
2485 | if (**s) | |
2486 | { | |
2487 | *s += 2; | |
2488 | goto loop; | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | return c; | |
2493 | } | |
2494 | ||
2495 | #ifdef HAVE_NTGUI | |
2496 | ||
2497 | /* Create a Windows bitmap from X bitmap data. */ | |
2498 | static HBITMAP | |
2499 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2500 | { | |
2501 | static unsigned char swap_nibble[16] | |
2502 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2503 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2504 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2505 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2506 | int i, j, w1, w2; | |
2507 | unsigned char *bits, *p; | |
2508 | HBITMAP bmp; | |
2509 | ||
2510 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2511 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
2512 | bits = (unsigned char *) alloca (height * w2); | |
72af86bd | 2513 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2514 | for (i = 0; i < height; i++) |
2515 | { | |
2516 | p = bits + i*w2; | |
2517 | for (j = 0; j < w1; j++) | |
2518 | { | |
2519 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2520 | unsigned char c = *data++; | |
2521 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2522 | | (swap_nibble[(c>>4) & 0xf])); | |
2523 | } | |
2524 | } | |
2525 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2526 | ||
2527 | return bmp; | |
2528 | } | |
2529 | ||
3046a84b | 2530 | static void |
7c3320d8 JB |
2531 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2532 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2533 | { |
2534 | HDC hdc, old_img_dc, new_img_dc; | |
2535 | HGDIOBJ old_prev, new_prev; | |
2536 | HBITMAP new_pixmap; | |
2537 | ||
2538 | hdc = get_frame_dc (f); | |
2539 | old_img_dc = CreateCompatibleDC (hdc); | |
2540 | new_img_dc = CreateCompatibleDC (hdc); | |
2541 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2542 | release_frame_dc (f, hdc); | |
2543 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2544 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2545 | /* Windows convention for mono bitmaps is black = background, |
2546 | white = foreground. */ | |
2386b1f1 JR |
2547 | SetTextColor (new_img_dc, background); |
2548 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2549 | |
2550 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2551 | 0, 0, SRCCOPY); | |
2552 | ||
2553 | SelectObject (old_img_dc, old_prev); | |
2554 | SelectObject (new_img_dc, new_prev); | |
2555 | DeleteDC (old_img_dc); | |
2556 | DeleteDC (new_img_dc); | |
2557 | DeleteObject (img->pixmap); | |
2558 | if (new_pixmap == 0) | |
2559 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2560 | else | |
2561 | img->pixmap = new_pixmap; | |
2562 | } | |
2563 | ||
2564 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2565 | ||
2566 | #else | |
2567 | ||
2568 | #define XBM_BIT_SHUFFLE(b) (b) | |
2569 | ||
2570 | #endif /* HAVE_NTGUI */ | |
2571 | ||
2572 | ||
2573 | static void | |
d3da34e0 JB |
2574 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2575 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
2576 | int non_default_colors) | |
4ef0d4d0 KS |
2577 | { |
2578 | #ifdef HAVE_NTGUI | |
2579 | img->pixmap | |
2580 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2581 | ||
2582 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2583 | if (non_default_colors) | |
2584 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2585 | |
2586 | #elif defined (HAVE_NS) | |
ed3751c8 | 2587 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2588 | |
4ef0d4d0 | 2589 | #else |
ca4aa935 PE |
2590 | img->pixmap = |
2591 | (x_check_image_size (0, img->width, img->height) | |
2592 | ? XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
4ef0d4d0 KS |
2593 | FRAME_X_WINDOW (f), |
2594 | data, | |
2595 | img->width, img->height, | |
2596 | fg, bg, | |
ca4aa935 PE |
2597 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))) |
2598 | : NO_PIXMAP); | |
edfda783 | 2599 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2600 | } |
2601 | ||
2602 | ||
2603 | ||
2604 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2605 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2606 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2607 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
2608 | Value is non-zero if successful. DATA null means just test if | |
ce959360 CY |
2609 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR |
2610 | is non-zero, inhibit the call to image_error when the image size is | |
2611 | invalid (the bitmap remains unread). */ | |
4ef0d4d0 KS |
2612 | |
2613 | static int | |
d3da34e0 | 2614 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2615 | int *width, int *height, char **data, |
d3da34e0 | 2616 | int inhibit_image_error) |
4ef0d4d0 KS |
2617 | { |
2618 | unsigned char *s = contents; | |
2619 | char buffer[BUFSIZ]; | |
2620 | int padding_p = 0; | |
2621 | int v10 = 0; | |
ca4aa935 | 2622 | int bytes_per_line, i, nbytes; |
b8dc29e9 | 2623 | char *p; |
4ef0d4d0 KS |
2624 | int value; |
2625 | int LA1; | |
2626 | ||
2627 | #define match() \ | |
2628 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2629 | ||
2630 | #define expect(TOKEN) \ | |
2631 | if (LA1 != (TOKEN)) \ | |
2632 | goto failure; \ | |
2633 | else \ | |
2634 | match () | |
2635 | ||
2636 | #define expect_ident(IDENT) \ | |
2637 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2638 | match (); \ | |
2639 | else \ | |
2640 | goto failure | |
2641 | ||
2642 | *width = *height = -1; | |
2643 | if (data) | |
2644 | *data = NULL; | |
2645 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2646 | ||
2647 | /* Parse defines for width, height and hot-spots. */ | |
2648 | while (LA1 == '#') | |
2649 | { | |
2650 | match (); | |
2651 | expect_ident ("define"); | |
2652 | expect (XBM_TK_IDENT); | |
2653 | ||
431feaf6 | 2654 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2655 | { |
6ae141d6 PE |
2656 | char *q = strrchr (buffer, '_'); |
2657 | q = q ? q + 1 : buffer; | |
2658 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2659 | *width = value; |
6ae141d6 | 2660 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2661 | *height = value; |
2662 | } | |
2663 | expect (XBM_TK_NUMBER); | |
2664 | } | |
2665 | ||
f1f25b99 | 2666 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2667 | { |
ce959360 CY |
2668 | if (!inhibit_image_error) |
2669 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2670 | goto failure; |
2671 | } | |
4ef0d4d0 KS |
2672 | else if (data == NULL) |
2673 | goto success; | |
2674 | ||
2675 | /* Parse bits. Must start with `static'. */ | |
2676 | expect_ident ("static"); | |
2677 | if (LA1 == XBM_TK_IDENT) | |
2678 | { | |
2679 | if (strcmp (buffer, "unsigned") == 0) | |
2680 | { | |
2681 | match (); | |
2682 | expect_ident ("char"); | |
2683 | } | |
2684 | else if (strcmp (buffer, "short") == 0) | |
2685 | { | |
2686 | match (); | |
2687 | v10 = 1; | |
2688 | if (*width % 16 && *width % 16 < 9) | |
2689 | padding_p = 1; | |
2690 | } | |
2691 | else if (strcmp (buffer, "char") == 0) | |
2692 | match (); | |
2693 | else | |
2694 | goto failure; | |
2695 | } | |
2696 | else | |
2697 | goto failure; | |
2698 | ||
2699 | expect (XBM_TK_IDENT); | |
2700 | expect ('['); | |
2701 | expect (']'); | |
2702 | expect ('='); | |
2703 | expect ('{'); | |
2704 | ||
ca4aa935 PE |
2705 | if (! x_check_image_size (0, *width, *height)) |
2706 | { | |
2707 | if (!inhibit_image_error) | |
2708 | image_error ("Image too large (%dx%d)", | |
2709 | make_number (*width), make_number (*height)); | |
2710 | goto failure; | |
2711 | } | |
4ef0d4d0 KS |
2712 | bytes_per_line = (*width + 7) / 8 + padding_p; |
2713 | nbytes = bytes_per_line * *height; | |
b8dc29e9 | 2714 | p = *data = (char *) xmalloc (nbytes); |
4ef0d4d0 KS |
2715 | |
2716 | if (v10) | |
2717 | { | |
2718 | for (i = 0; i < nbytes; i += 2) | |
2719 | { | |
2720 | int val = value; | |
2721 | expect (XBM_TK_NUMBER); | |
2722 | ||
2723 | *p++ = XBM_BIT_SHUFFLE (val); | |
2724 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2725 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2726 | ||
2727 | if (LA1 == ',' || LA1 == '}') | |
2728 | match (); | |
2729 | else | |
2730 | goto failure; | |
2731 | } | |
2732 | } | |
2733 | else | |
2734 | { | |
2735 | for (i = 0; i < nbytes; ++i) | |
2736 | { | |
2737 | int val = value; | |
2738 | expect (XBM_TK_NUMBER); | |
2739 | ||
2740 | *p++ = XBM_BIT_SHUFFLE (val); | |
2741 | ||
2742 | if (LA1 == ',' || LA1 == '}') | |
2743 | match (); | |
2744 | else | |
2745 | goto failure; | |
2746 | } | |
2747 | } | |
2748 | ||
2749 | success: | |
2750 | return 1; | |
2751 | ||
2752 | failure: | |
2753 | ||
2754 | if (data && *data) | |
2755 | { | |
2756 | xfree (*data); | |
2757 | *data = NULL; | |
2758 | } | |
2759 | return 0; | |
2760 | ||
2761 | #undef match | |
2762 | #undef expect | |
2763 | #undef expect_ident | |
2764 | } | |
2765 | ||
2766 | ||
2767 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
2768 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
2769 | successful. */ | |
2770 | ||
2771 | static int | |
d3da34e0 JB |
2772 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2773 | unsigned char *end) | |
4ef0d4d0 KS |
2774 | { |
2775 | int rc; | |
b8dc29e9 | 2776 | char *data; |
4ef0d4d0 KS |
2777 | int success_p = 0; |
2778 | ||
ce959360 CY |
2779 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2780 | &data, 0); | |
4ef0d4d0 KS |
2781 | if (rc) |
2782 | { | |
2783 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2784 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2785 | int non_default_colors = 0; | |
2786 | Lisp_Object value; | |
2787 | ||
2788 | xassert (img->width > 0 && img->height > 0); | |
2789 | ||
2790 | /* Get foreground and background colors, maybe allocate colors. */ | |
2791 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2792 | if (!NILP (value)) | |
2793 | { | |
2794 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2795 | non_default_colors = 1; | |
2796 | } | |
2797 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2798 | if (!NILP (value)) | |
2799 | { | |
2800 | background = x_alloc_image_color (f, img, value, background); | |
2801 | img->background = background; | |
2802 | img->background_valid = 1; | |
2803 | non_default_colors = 1; | |
2804 | } | |
2805 | ||
1f026899 | 2806 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2807 | foreground, background, |
2808 | non_default_colors); | |
2809 | xfree (data); | |
2810 | ||
2811 | if (img->pixmap == NO_PIXMAP) | |
2812 | { | |
2813 | x_clear_image (f, img); | |
2814 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2815 | } | |
2816 | else | |
2817 | success_p = 1; | |
2818 | } | |
2819 | else | |
2820 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2821 | ||
2822 | return success_p; | |
2823 | } | |
2824 | ||
2825 | ||
2826 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
2827 | ||
2828 | static int | |
d3da34e0 | 2829 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2830 | { |
2831 | int w, h; | |
2832 | return (STRINGP (data) | |
f1f25b99 | 2833 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2834 | (SDATA (data) + SBYTES (data)), |
2835 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2836 | } |
2837 | ||
2838 | ||
2839 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
2840 | non-zero if successful. */ | |
2841 | ||
2842 | static int | |
d3da34e0 | 2843 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
2844 | { |
2845 | int success_p = 0; | |
2846 | Lisp_Object file_name; | |
2847 | ||
2848 | xassert (xbm_image_p (img->spec)); | |
2849 | ||
2850 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2851 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2852 | if (STRINGP (file_name)) | |
2853 | { | |
2854 | Lisp_Object file; | |
2855 | unsigned char *contents; | |
dd52fcea | 2856 | ptrdiff_t size; |
4ef0d4d0 KS |
2857 | |
2858 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2859 | if (!STRINGP (file)) |
2860 | { | |
2861 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2862 | return 0; |
2863 | } | |
2864 | ||
42a5b22f | 2865 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2866 | if (contents == NULL) |
2867 | { | |
2868 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2869 | return 0; |
2870 | } | |
2871 | ||
2872 | success_p = xbm_load_image (f, img, contents, contents + size); | |
d5a19415 | 2873 | xfree (contents); |
4ef0d4d0 KS |
2874 | } |
2875 | else | |
2876 | { | |
2877 | struct image_keyword fmt[XBM_LAST]; | |
2878 | Lisp_Object data; | |
2879 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2880 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2881 | int non_default_colors = 0; | |
2882 | char *bits; | |
2883 | int parsed_p; | |
2884 | int in_memory_file_p = 0; | |
2885 | ||
2886 | /* See if data looks like an in-memory XBM file. */ | |
2887 | data = image_spec_value (img->spec, QCdata, NULL); | |
2888 | in_memory_file_p = xbm_file_p (data); | |
2889 | ||
2890 | /* Parse the image specification. */ | |
72af86bd | 2891 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2892 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
35fa624f | 2893 | (void) parsed_p; |
4ef0d4d0 KS |
2894 | xassert (parsed_p); |
2895 | ||
2896 | /* Get specified width, and height. */ | |
2897 | if (!in_memory_file_p) | |
2898 | { | |
2899 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2900 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
2901 | xassert (img->width > 0 && img->height > 0); | |
ca4aa935 PE |
2902 | if (!check_image_size (f, img->width, img->height)) |
2903 | { | |
2904 | image_error ("Invalid image size (see `max-image-size')", | |
2905 | Qnil, Qnil); | |
2906 | return 0; | |
2907 | } | |
4ef0d4d0 KS |
2908 | } |
2909 | ||
2910 | /* Get foreground and background colors, maybe allocate colors. */ | |
2911 | if (fmt[XBM_FOREGROUND].count | |
2912 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2913 | { | |
2914 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2915 | foreground); | |
2916 | non_default_colors = 1; | |
2917 | } | |
2918 | ||
2919 | if (fmt[XBM_BACKGROUND].count | |
2920 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2921 | { | |
2922 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2923 | background); | |
2924 | non_default_colors = 1; | |
2925 | } | |
2926 | ||
2927 | if (in_memory_file_p) | |
2928 | success_p = xbm_load_image (f, img, SDATA (data), | |
2929 | (SDATA (data) | |
2930 | + SBYTES (data))); | |
2931 | else | |
2932 | { | |
2933 | if (VECTORP (data)) | |
2934 | { | |
2935 | int i; | |
2936 | char *p; | |
2937 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2938 | ||
2939 | p = bits = (char *) alloca (nbytes * img->height); | |
2940 | for (i = 0; i < img->height; ++i, p += nbytes) | |
2941 | { | |
2942 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
2943 | if (STRINGP (line)) | |
72af86bd | 2944 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2945 | else |
72af86bd | 2946 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2947 | } |
2948 | } | |
2949 | else if (STRINGP (data)) | |
42a5b22f | 2950 | bits = SSDATA (data); |
4ef0d4d0 | 2951 | else |
b8dc29e9 | 2952 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2953 | |
44b1dc2e JR |
2954 | #ifdef WINDOWSNT |
2955 | { | |
2956 | char *invertedBits; | |
2957 | int nbytes, i; | |
2958 | /* Windows mono bitmaps are reversed compared with X. */ | |
2959 | invertedBits = bits; | |
285d07e2 | 2960 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2961 | * img->height; |
ed3751c8 | 2962 | bits = (char *) alloca (nbytes); |
44b1dc2e JR |
2963 | for (i = 0; i < nbytes; i++) |
2964 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2965 | } | |
2966 | #endif | |
4ef0d4d0 KS |
2967 | /* Create the pixmap. */ |
2968 | ||
ca4aa935 PE |
2969 | if (x_check_image_size (0, img->width, img->height)) |
2970 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2971 | foreground, background, | |
2972 | non_default_colors); | |
2973 | else | |
2974 | img->pixmap = NO_PIXMAP; | |
2975 | ||
4ef0d4d0 KS |
2976 | if (img->pixmap) |
2977 | success_p = 1; | |
2978 | else | |
2979 | { | |
2980 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2981 | img->spec, Qnil); | |
2982 | x_clear_image (f, img); | |
2983 | } | |
2984 | } | |
2985 | } | |
2986 | ||
2987 | return success_p; | |
2988 | } | |
2989 | ||
2990 | ||
2991 | \f | |
2992 | /*********************************************************************** | |
2993 | XPM images | |
2994 | ***********************************************************************/ | |
2995 | ||
9e2a2647 | 2996 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2997 | |
f57e2426 J |
2998 | static int xpm_image_p (Lisp_Object object); |
2999 | static int xpm_load (struct frame *f, struct image *img); | |
3000 | static int xpm_valid_color_symbols_p (Lisp_Object); | |
4ef0d4d0 | 3001 | |
9e2a2647 | 3002 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
3003 | |
3004 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
3005 | #ifdef HAVE_NTGUI |
3006 | /* Indicate to xpm.h that we don't have Xlib. */ | |
3007 | #define FOR_MSW | |
3008 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 3009 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
3010 | #define XColor xpm_XColor |
3011 | #define XImage xpm_XImage | |
279d3293 | 3012 | #define Display xpm_Display |
4ef0d4d0 KS |
3013 | #define PIXEL_ALREADY_TYPEDEFED |
3014 | #include "X11/xpm.h" | |
3015 | #undef FOR_MSW | |
3016 | #undef XColor | |
3017 | #undef XImage | |
279d3293 | 3018 | #undef Display |
4ef0d4d0 KS |
3019 | #undef PIXEL_ALREADY_TYPEDEFED |
3020 | #else | |
3021 | #include "X11/xpm.h" | |
3022 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3023 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3024 | |
9e2a2647 | 3025 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
3026 | /* The symbol `xpm' identifying XPM-format images. */ |
3027 | ||
955cbe7b | 3028 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
3029 | |
3030 | /* Indices of image specification fields in xpm_format, below. */ | |
3031 | ||
3032 | enum xpm_keyword_index | |
3033 | { | |
3034 | XPM_TYPE, | |
3035 | XPM_FILE, | |
3036 | XPM_DATA, | |
3037 | XPM_ASCENT, | |
3038 | XPM_MARGIN, | |
3039 | XPM_RELIEF, | |
3040 | XPM_ALGORITHM, | |
3041 | XPM_HEURISTIC_MASK, | |
3042 | XPM_MASK, | |
3043 | XPM_COLOR_SYMBOLS, | |
3044 | XPM_BACKGROUND, | |
3045 | XPM_LAST | |
3046 | }; | |
3047 | ||
3048 | /* Vector of image_keyword structures describing the format | |
3049 | of valid XPM image specifications. */ | |
3050 | ||
91433552 | 3051 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
3052 | { |
3053 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3054 | {":file", IMAGE_STRING_VALUE, 0}, | |
3055 | {":data", IMAGE_STRING_VALUE, 0}, | |
3056 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 3057 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
3058 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
3059 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3060 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3061 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3062 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3063 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3064 | }; | |
3065 | ||
3066 | /* Structure describing the image type XPM. */ | |
3067 | ||
3068 | static struct image_type xpm_type = | |
3069 | { | |
3070 | &Qxpm, | |
3071 | xpm_image_p, | |
3072 | xpm_load, | |
3073 | x_clear_image, | |
3074 | NULL | |
3075 | }; | |
3076 | ||
3077 | #ifdef HAVE_X_WINDOWS | |
3078 | ||
3079 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3080 | functions for allocating image colors. Our own functions handle | |
3081 | color allocation failures more gracefully than the ones on the XPM | |
3082 | lib. */ | |
3083 | ||
3084 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3085 | #define ALLOC_XPM_COLORS | |
3086 | #endif | |
3087 | #endif /* HAVE_X_WINDOWS */ | |
3088 | ||
3089 | #ifdef ALLOC_XPM_COLORS | |
3090 | ||
f57e2426 J |
3091 | static void xpm_init_color_cache (struct frame *, XpmAttributes *); |
3092 | static void xpm_free_color_cache (void); | |
3093 | static int xpm_lookup_color (struct frame *, char *, XColor *); | |
3094 | static int xpm_color_bucket (char *); | |
3095 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, | |
3096 | XColor *, int); | |
4ef0d4d0 KS |
3097 | |
3098 | /* An entry in a hash table used to cache color definitions of named | |
3099 | colors. This cache is necessary to speed up XPM image loading in | |
3100 | case we do color allocations ourselves. Without it, we would need | |
3101 | a call to XParseColor per pixel in the image. */ | |
3102 | ||
3103 | struct xpm_cached_color | |
3104 | { | |
3105 | /* Next in collision chain. */ | |
3106 | struct xpm_cached_color *next; | |
3107 | ||
3108 | /* Color definition (RGB and pixel color). */ | |
3109 | XColor color; | |
3110 | ||
3111 | /* Color name. */ | |
3112 | char name[1]; | |
3113 | }; | |
3114 | ||
3115 | /* The hash table used for the color cache, and its bucket vector | |
3116 | size. */ | |
3117 | ||
3118 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3119 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3120 | |
3121 | /* Initialize the color cache. */ | |
3122 | ||
3123 | static void | |
d3da34e0 | 3124 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3125 | { |
3126 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3127 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3128 | memset (xpm_color_cache, 0, nbytes); | |
3129 | init_color_table (); | |
3130 | ||
3131 | if (attrs->valuemask & XpmColorSymbols) | |
3132 | { | |
3133 | int i; | |
3134 | XColor color; | |
3135 | ||
3136 | for (i = 0; i < attrs->numsymbols; ++i) | |
3137 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3138 | attrs->colorsymbols[i].value, &color)) | |
3139 | { | |
3140 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3141 | color.blue); | |
3142 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3143 | } | |
3144 | } | |
3145 | } | |
3146 | ||
3147 | /* Free the color cache. */ | |
3148 | ||
3149 | static void | |
d3da34e0 | 3150 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3151 | { |
3152 | struct xpm_cached_color *p, *next; | |
3153 | int i; | |
3154 | ||
3155 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3156 | for (p = xpm_color_cache[i]; p; p = next) | |
3157 | { | |
3158 | next = p->next; | |
3159 | xfree (p); | |
3160 | } | |
3161 | ||
3162 | xfree (xpm_color_cache); | |
3163 | xpm_color_cache = NULL; | |
3164 | free_color_table (); | |
3165 | } | |
3166 | ||
3167 | /* Return the bucket index for color named COLOR_NAME in the color | |
3168 | cache. */ | |
3169 | ||
3170 | static int | |
d3da34e0 | 3171 | xpm_color_bucket (char *color_name) |
4ef0d4d0 | 3172 | { |
3f791afe PE |
3173 | EMACS_UINT hash = hash_string (color_name, strlen (color_name)); |
3174 | return hash % XPM_COLOR_CACHE_BUCKETS; | |
4ef0d4d0 KS |
3175 | } |
3176 | ||
3177 | ||
3178 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3179 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3180 | entry added. */ | |
3181 | ||
3182 | static struct xpm_cached_color * | |
d3da34e0 | 3183 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3184 | { |
3185 | size_t nbytes; | |
3186 | struct xpm_cached_color *p; | |
3187 | ||
3188 | if (bucket < 0) | |
3189 | bucket = xpm_color_bucket (color_name); | |
3190 | ||
3f791afe | 3191 | nbytes = offsetof (struct xpm_cached_color, name) + strlen (color_name) + 1; |
4ef0d4d0 KS |
3192 | p = (struct xpm_cached_color *) xmalloc (nbytes); |
3193 | strcpy (p->name, color_name); | |
3194 | p->color = *color; | |
3195 | p->next = xpm_color_cache[bucket]; | |
3196 | xpm_color_cache[bucket] = p; | |
3197 | return p; | |
3198 | } | |
3199 | ||
3200 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3201 | return the cached definition in *COLOR. Otherwise, make a new | |
3202 | entry in the cache and allocate the color. Value is zero if color | |
3203 | allocation failed. */ | |
3204 | ||
3205 | static int | |
d3da34e0 | 3206 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3207 | { |
3208 | struct xpm_cached_color *p; | |
3209 | int h = xpm_color_bucket (color_name); | |
3210 | ||
3211 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3212 | if (strcmp (p->name, color_name) == 0) | |
3213 | break; | |
3214 | ||
3215 | if (p != NULL) | |
3216 | *color = p->color; | |
3217 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3218 | color_name, color)) | |
3219 | { | |
3220 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3221 | color->blue); | |
3222 | p = xpm_cache_color (f, color_name, color, h); | |
3223 | } | |
3224 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3225 | with transparency, and it's useful. */ | |
3226 | else if (strcmp ("opaque", color_name) == 0) | |
3227 | { | |
72af86bd | 3228 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3229 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3230 | p = xpm_cache_color (f, color_name, color, h); | |
3231 | } | |
3232 | ||
3233 | return p != NULL; | |
3234 | } | |
3235 | ||
3236 | ||
3237 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3238 | CLOSURE is a pointer to the frame on which we allocate the | |
3239 | color. Return in *COLOR the allocated color. Value is non-zero | |
3240 | if successful. */ | |
3241 | ||
3242 | static int | |
d3da34e0 JB |
3243 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3244 | void *closure) | |
4ef0d4d0 KS |
3245 | { |
3246 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3247 | } | |
3248 | ||
3249 | ||
3250 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3251 | is a pointer to the frame on which we allocate the color. Value is | |
3252 | non-zero if successful. */ | |
3253 | ||
3254 | static int | |
d3da34e0 | 3255 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3256 | { |
3257 | return 1; | |
3258 | } | |
3259 | ||
3260 | #endif /* ALLOC_XPM_COLORS */ | |
3261 | ||
3262 | ||
3263 | #ifdef HAVE_NTGUI | |
3264 | ||
3265 | /* XPM library details. */ | |
3266 | ||
14beddf4 CY |
3267 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3268 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3269 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3270 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3271 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3272 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3273 | |
4ef0d4d0 | 3274 | static int |
0855eb52 | 3275 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3276 | { |
3277 | HMODULE library; | |
3278 | ||
0855eb52 | 3279 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3280 | return 0; |
3281 | ||
3282 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3283 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3284 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3285 | LOAD_IMGLIB_FN (library, XImageFree); | |
3286 | return 1; | |
3287 | } | |
3288 | ||
3289 | #endif /* HAVE_NTGUI */ | |
3290 | ||
3291 | ||
3292 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3293 | for XPM images. Such a list must consist of conses whose car and | |
3294 | cdr are strings. */ | |
3295 | ||
3296 | static int | |
d3da34e0 | 3297 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3298 | { |
3299 | while (CONSP (color_symbols)) | |
3300 | { | |
3301 | Lisp_Object sym = XCAR (color_symbols); | |
3302 | if (!CONSP (sym) | |
3303 | || !STRINGP (XCAR (sym)) | |
3304 | || !STRINGP (XCDR (sym))) | |
3305 | break; | |
3306 | color_symbols = XCDR (color_symbols); | |
3307 | } | |
3308 | ||
3309 | return NILP (color_symbols); | |
3310 | } | |
3311 | ||
3312 | ||
3313 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3314 | ||
3315 | static int | |
d3da34e0 | 3316 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3317 | { |
3318 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3319 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3320 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3321 | /* Either `:file' or `:data' must be present. */ | |
3322 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3323 | /* Either no `:color-symbols' or it's a list of conses | |
3324 | whose car and cdr are strings. */ | |
3325 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3326 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3327 | } | |
3328 | ||
9e2a2647 | 3329 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3330 | |
cd44d2eb | 3331 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
0766b489 | 3332 | ptrdiff_t |
ef1b0ba7 | 3333 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3334 | { |
3335 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
0766b489 PE |
3336 | ptrdiff_t id; |
3337 | int rc; | |
786a43d6 CY |
3338 | XpmAttributes attrs; |
3339 | Pixmap bitmap, mask; | |
3340 | ||
72af86bd | 3341 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3342 | |
54188d8f CY |
3343 | attrs.visual = FRAME_X_VISUAL (f); |
3344 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3345 | attrs.valuemask |= XpmVisual; | |
3346 | attrs.valuemask |= XpmColormap; | |
3347 | ||
786a43d6 | 3348 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3349 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3350 | if (rc != XpmSuccess) |
fe45ad15 CY |
3351 | { |
3352 | XpmFreeAttributes (&attrs); | |
3353 | return -1; | |
3354 | } | |
786a43d6 CY |
3355 | |
3356 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3357 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3358 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3359 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3360 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3361 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3362 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3363 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3364 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3365 | ||
3366 | XpmFreeAttributes (&attrs); | |
3367 | return id; | |
3368 | } | |
0d876a14 | 3369 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3370 | |
4ef0d4d0 KS |
3371 | /* Load image IMG which will be displayed on frame F. Value is |
3372 | non-zero if successful. */ | |
3373 | ||
ea1aaa6f ST |
3374 | #ifdef HAVE_XPM |
3375 | ||
4ef0d4d0 | 3376 | static int |
d3da34e0 | 3377 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3378 | { |
3379 | int rc; | |
3380 | XpmAttributes attrs; | |
3381 | Lisp_Object specified_file, color_symbols; | |
3382 | #ifdef HAVE_NTGUI | |
3383 | HDC hdc; | |
3384 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3385 | #endif /* HAVE_NTGUI */ | |
3386 | ||
3387 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3388 | close colors. Return colors allocated. */ | |
72af86bd | 3389 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3390 | |
3391 | #ifndef HAVE_NTGUI | |
3392 | attrs.visual = FRAME_X_VISUAL (f); | |
3393 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3394 | attrs.valuemask |= XpmVisual; | |
3395 | attrs.valuemask |= XpmColormap; | |
3396 | #endif /* HAVE_NTGUI */ | |
3397 | ||
3398 | #ifdef ALLOC_XPM_COLORS | |
3399 | /* Allocate colors with our own functions which handle | |
3400 | failing color allocation more gracefully. */ | |
3401 | attrs.color_closure = f; | |
3402 | attrs.alloc_color = xpm_alloc_color; | |
3403 | attrs.free_colors = xpm_free_colors; | |
3404 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3405 | #else /* not ALLOC_XPM_COLORS */ | |
3406 | /* Let the XPM lib allocate colors. */ | |
3407 | attrs.valuemask |= XpmReturnAllocPixels; | |
3408 | #ifdef XpmAllocCloseColors | |
3409 | attrs.alloc_close_colors = 1; | |
3410 | attrs.valuemask |= XpmAllocCloseColors; | |
3411 | #else /* not XpmAllocCloseColors */ | |
3412 | attrs.closeness = 600; | |
3413 | attrs.valuemask |= XpmCloseness; | |
3414 | #endif /* not XpmAllocCloseColors */ | |
3415 | #endif /* ALLOC_XPM_COLORS */ | |
3416 | ||
3417 | /* If image specification contains symbolic color definitions, add | |
3418 | these to `attrs'. */ | |
3419 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3420 | if (CONSP (color_symbols)) | |
3421 | { | |
3422 | Lisp_Object tail; | |
3423 | XpmColorSymbol *xpm_syms; | |
3424 | int i, size; | |
3425 | ||
3426 | attrs.valuemask |= XpmColorSymbols; | |
3427 | ||
3428 | /* Count number of symbols. */ | |
3429 | attrs.numsymbols = 0; | |
3430 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3431 | ++attrs.numsymbols; | |
3432 | ||
3433 | /* Allocate an XpmColorSymbol array. */ | |
3434 | size = attrs.numsymbols * sizeof *xpm_syms; | |
3435 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
72af86bd | 3436 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3437 | attrs.colorsymbols = xpm_syms; |
3438 | ||
3439 | /* Fill the color symbol array. */ | |
3440 | for (tail = color_symbols, i = 0; | |
3441 | CONSP (tail); | |
3442 | ++i, tail = XCDR (tail)) | |
3443 | { | |
7574650a AS |
3444 | Lisp_Object name; |
3445 | Lisp_Object color; | |
e22cffbc | 3446 | char *empty_string = (char *) ""; |
7574650a AS |
3447 | |
3448 | if (!CONSP (XCAR (tail))) | |
3449 | { | |
e22cffbc PE |
3450 | xpm_syms[i].name = empty_string; |
3451 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3452 | continue; |
3453 | } | |
3454 | name = XCAR (XCAR (tail)); | |
3455 | color = XCDR (XCAR (tail)); | |
3456 | if (STRINGP (name)) | |
3457 | { | |
3458 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
42a5b22f | 3459 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3460 | } |
3461 | else | |
e22cffbc | 3462 | xpm_syms[i].name = empty_string; |
7574650a AS |
3463 | if (STRINGP (color)) |
3464 | { | |
3465 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
42a5b22f | 3466 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3467 | } |
3468 | else | |
e22cffbc | 3469 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3470 | } |
3471 | } | |
3472 | ||
3473 | /* Create a pixmap for the image, either from a file, or from a | |
3474 | string buffer containing data in the same format as an XPM file. */ | |
3475 | #ifdef ALLOC_XPM_COLORS | |
3476 | xpm_init_color_cache (f, &attrs); | |
3477 | #endif | |
3478 | ||
3479 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3480 | ||
3481 | #ifdef HAVE_NTGUI | |
3482 | { | |
3483 | HDC frame_dc = get_frame_dc (f); | |
3484 | hdc = CreateCompatibleDC (frame_dc); | |
3485 | release_frame_dc (f, frame_dc); | |
3486 | } | |
3487 | #endif /* HAVE_NTGUI */ | |
3488 | ||
3489 | if (STRINGP (specified_file)) | |
3490 | { | |
3491 | Lisp_Object file = x_find_image_file (specified_file); | |
3492 | if (!STRINGP (file)) | |
3493 | { | |
3494 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3495 | #ifdef ALLOC_XPM_COLORS |
3496 | xpm_free_color_cache (); | |
3497 | #endif | |
4ef0d4d0 KS |
3498 | return 0; |
3499 | } | |
3500 | ||
3501 | #ifdef HAVE_NTGUI | |
3502 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3503 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3504 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3505 | &xpm_image, &xpm_mask, | |
3506 | &attrs); | |
3507 | #else | |
3508 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3509 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3510 | &attrs); |
3511 | #endif /* HAVE_NTGUI */ | |
3512 | } | |
3513 | else | |
3514 | { | |
3515 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3516 | if (!STRINGP (buffer)) |
3517 | { | |
3518 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3519 | #ifdef ALLOC_XPM_COLORS | |
3520 | xpm_free_color_cache (); | |
3521 | #endif | |
3522 | return 0; | |
3523 | } | |
4ef0d4d0 KS |
3524 | #ifdef HAVE_NTGUI |
3525 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3526 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3527 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3528 | &xpm_image, &xpm_mask, | |
3529 | &attrs); | |
3530 | #else | |
3531 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3532 | SSDATA (buffer), |
4ef0d4d0 KS |
3533 | &img->pixmap, &img->mask, |
3534 | &attrs); | |
3535 | #endif /* HAVE_NTGUI */ | |
3536 | } | |
3537 | ||
3538 | if (rc == XpmSuccess) | |
3539 | { | |
3540 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3541 | img->colors = colors_in_color_table (&img->ncolors); | |
3542 | #else /* not ALLOC_XPM_COLORS */ | |
3543 | int i; | |
3544 | ||
3545 | #ifdef HAVE_NTGUI | |
3546 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3547 | plus some duplicate attributes. */ | |
3548 | if (xpm_image && xpm_image->bitmap) | |
3549 | { | |
3550 | img->pixmap = xpm_image->bitmap; | |
3551 | /* XImageFree in libXpm frees XImage struct without destroying | |
3552 | the bitmap, which is what we want. */ | |
3553 | fn_XImageFree (xpm_image); | |
3554 | } | |
3555 | if (xpm_mask && xpm_mask->bitmap) | |
3556 | { | |
3557 | /* The mask appears to be inverted compared with what we expect. | |
3558 | TODO: invert our expectations. See other places where we | |
3559 | have to invert bits because our idea of masks is backwards. */ | |
3560 | HGDIOBJ old_obj; | |
3561 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3562 | ||
3563 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3564 | SelectObject (hdc, old_obj); | |
3565 | ||
3566 | img->mask = xpm_mask->bitmap; | |
3567 | fn_XImageFree (xpm_mask); | |
3568 | DeleteDC (hdc); | |
3569 | } | |
3570 | ||
3571 | DeleteDC (hdc); | |
3572 | #endif /* HAVE_NTGUI */ | |
3573 | ||
3574 | /* Remember allocated colors. */ | |
0065d054 | 3575 | img->colors = xnmalloc (attrs.nalloc_pixels, sizeof *img->colors); |
ddff3151 | 3576 | img->ncolors = attrs.nalloc_pixels; |
4ef0d4d0 KS |
3577 | for (i = 0; i < attrs.nalloc_pixels; ++i) |
3578 | { | |
3579 | img->colors[i] = attrs.alloc_pixels[i]; | |
3580 | #ifdef DEBUG_X_COLORS | |
3581 | register_color (img->colors[i]); | |
3582 | #endif | |
3583 | } | |
3584 | #endif /* not ALLOC_XPM_COLORS */ | |
3585 | ||
3586 | img->width = attrs.width; | |
3587 | img->height = attrs.height; | |
3588 | xassert (img->width > 0 && img->height > 0); | |
3589 | ||
3590 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3591 | #ifdef HAVE_NTGUI | |
3592 | fn_XpmFreeAttributes (&attrs); | |
3593 | #else | |
3594 | XpmFreeAttributes (&attrs); | |
3595 | #endif /* HAVE_NTGUI */ | |
3596 | } | |
3597 | else | |
3598 | { | |
3599 | #ifdef HAVE_NTGUI | |
3600 | DeleteDC (hdc); | |
3601 | #endif /* HAVE_NTGUI */ | |
3602 | ||
3603 | switch (rc) | |
3604 | { | |
3605 | case XpmOpenFailed: | |
3606 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3607 | break; | |
3608 | ||
3609 | case XpmFileInvalid: | |
3610 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3611 | break; | |
3612 | ||
3613 | case XpmNoMemory: | |
3614 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3615 | break; | |
3616 | ||
3617 | case XpmColorFailed: | |
3618 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3619 | break; | |
3620 | ||
3621 | default: | |
3622 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3623 | break; | |
3624 | } | |
3625 | } | |
3626 | ||
3627 | #ifdef ALLOC_XPM_COLORS | |
3628 | xpm_free_color_cache (); | |
3629 | #endif | |
3630 | return rc == XpmSuccess; | |
3631 | } | |
3632 | ||
3633 | #endif /* HAVE_XPM */ | |
3634 | ||
9e2a2647 | 3635 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3636 | |
9e2a2647 | 3637 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3638 | Only XPM version 3 (without any extensions) is supported. */ |
3639 | ||
f57e2426 J |
3640 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, |
3641 | int, Lisp_Object); | |
3642 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3643 | const unsigned char *, int); | |
f57e2426 J |
3644 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, |
3645 | int, Lisp_Object); | |
3646 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3647 | const unsigned char *, int); | |
ea1aaa6f ST |
3648 | |
3649 | /* Tokens returned from xpm_scan. */ | |
3650 | ||
3651 | enum xpm_token | |
3652 | { | |
3653 | XPM_TK_IDENT = 256, | |
3654 | XPM_TK_STRING, | |
3655 | XPM_TK_EOF | |
3656 | }; | |
3657 | ||
3658 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3659 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3660 | the end (exclusive) addresses of the data, respectively. Advance | |
3661 | *S while scanning. If token is either XPM_TK_IDENT or | |
3662 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3663 | length of the corresponding token, respectively. */ | |
3664 | ||
3665 | static int | |
3d608a86 J |
3666 | xpm_scan (const unsigned char **s, |
3667 | const unsigned char *end, | |
3668 | const unsigned char **beg, | |
74ca2eb3 | 3669 | ptrdiff_t *len) |
ea1aaa6f ST |
3670 | { |
3671 | int c; | |
3672 | ||
3673 | while (*s < end) | |
3674 | { | |
3675 | /* Skip white-space. */ | |
3676 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 3677 | ; |
ea1aaa6f ST |
3678 | |
3679 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3680 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 3681 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3682 | { |
3683 | *beg = *s - 1; | |
2ff0845e YM |
3684 | while (*s < end |
3685 | && (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3686 | ++*s; |
3687 | *len = *s - *beg; | |
3688 | return XPM_TK_IDENT; | |
3689 | } | |
ea1aaa6f | 3690 | else if (c == '"') |
9ecf6403 YM |
3691 | { |
3692 | *beg = *s; | |
3693 | while (*s < end && **s != '"') | |
3694 | ++*s; | |
3695 | *len = *s - *beg; | |
3696 | if (*s < end) | |
3697 | ++*s; | |
3698 | return XPM_TK_STRING; | |
3699 | } | |
ea1aaa6f | 3700 | else if (c == '/') |
9ecf6403 YM |
3701 | { |
3702 | if (*s < end && **s == '*') | |
3703 | { | |
3704 | /* C-style comment. */ | |
3705 | ++*s; | |
3706 | do | |
3707 | { | |
3708 | while (*s < end && *(*s)++ != '*') | |
3709 | ; | |
3710 | } | |
3711 | while (*s < end && **s != '/'); | |
3712 | if (*s < end) | |
3713 | ++*s; | |
3714 | } | |
3715 | else | |
3716 | return c; | |
3717 | } | |
ea1aaa6f | 3718 | else |
9ecf6403 | 3719 | return c; |
ea1aaa6f ST |
3720 | } |
3721 | ||
3722 | return XPM_TK_EOF; | |
3723 | } | |
3724 | ||
bbe6f2aa | 3725 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3726 | specifying the color of each pixel in XPM data. A value is either |
3727 | an integer that specifies a pixel color, Qt that specifies | |
3728 | transparency, or Qnil for the unspecified color. If the length of | |
3729 | the key string is one, a vector is used as a table. Otherwise, a | |
3730 | hash table is used. */ | |
3731 | ||
3732 | static Lisp_Object | |
3d608a86 J |
3733 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3734 | const unsigned char *, | |
3735 | int, | |
3736 | Lisp_Object), | |
3737 | Lisp_Object (**get_func) (Lisp_Object, | |
3738 | const unsigned char *, | |
3739 | int)) | |
ea1aaa6f ST |
3740 | { |
3741 | *put_func = xpm_put_color_table_v; | |
3742 | *get_func = xpm_get_color_table_v; | |
3743 | return Fmake_vector (make_number (256), Qnil); | |
3744 | } | |
3745 | ||
3746 | static void | |
3d608a86 J |
3747 | xpm_put_color_table_v (Lisp_Object color_table, |
3748 | const unsigned char *chars_start, | |
3749 | int chars_len, | |
3750 | Lisp_Object color) | |
ea1aaa6f ST |
3751 | { |
3752 | XVECTOR (color_table)->contents[*chars_start] = color; | |
3753 | } | |
3754 | ||
3755 | static Lisp_Object | |
3d608a86 J |
3756 | xpm_get_color_table_v (Lisp_Object color_table, |
3757 | const unsigned char *chars_start, | |
3758 | int chars_len) | |
ea1aaa6f ST |
3759 | { |
3760 | return XVECTOR (color_table)->contents[*chars_start]; | |
3761 | } | |
3762 | ||
3763 | static Lisp_Object | |
3d608a86 J |
3764 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3765 | const unsigned char *, | |
3766 | int, | |
3767 | Lisp_Object), | |
3768 | Lisp_Object (**get_func) (Lisp_Object, | |
3769 | const unsigned char *, | |
3770 | int)) | |
ea1aaa6f ST |
3771 | { |
3772 | *put_func = xpm_put_color_table_h; | |
3773 | *get_func = xpm_get_color_table_h; | |
3774 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
3775 | make_float (DEFAULT_REHASH_SIZE), |
3776 | make_float (DEFAULT_REHASH_THRESHOLD), | |
3777 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
3778 | } |
3779 | ||
3780 | static void | |
3d608a86 J |
3781 | xpm_put_color_table_h (Lisp_Object color_table, |
3782 | const unsigned char *chars_start, | |
3783 | int chars_len, | |
3784 | Lisp_Object color) | |
ea1aaa6f ST |
3785 | { |
3786 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3787 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3788 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3789 | ||
3790 | hash_lookup (table, chars, &hash_code); | |
3791 | hash_put (table, chars, color, hash_code); | |
3792 | } | |
3793 | ||
3794 | static Lisp_Object | |
3d608a86 J |
3795 | xpm_get_color_table_h (Lisp_Object color_table, |
3796 | const unsigned char *chars_start, | |
3797 | int chars_len) | |
ea1aaa6f ST |
3798 | { |
3799 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
d3411f89 PE |
3800 | ptrdiff_t i = |
3801 | hash_lookup (table, make_unibyte_string (chars_start, chars_len), NULL); | |
ea1aaa6f ST |
3802 | |
3803 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3804 | } | |
3805 | ||
3806 | enum xpm_color_key { | |
3807 | XPM_COLOR_KEY_S, | |
3808 | XPM_COLOR_KEY_M, | |
3809 | XPM_COLOR_KEY_G4, | |
3810 | XPM_COLOR_KEY_G, | |
3811 | XPM_COLOR_KEY_C | |
3812 | }; | |
3813 | ||
46accb8f | 3814 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3815 | |
3816 | static int | |
3d608a86 | 3817 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3818 | { |
3819 | int i; | |
3820 | ||
3821 | for (i = 0; | |
3822 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3823 | i++) | |
3824 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3825 | return i; | |
3826 | return -1; | |
3827 | } | |
3828 | ||
3829 | static int | |
3d608a86 J |
3830 | xpm_load_image (struct frame *f, |
3831 | struct image *img, | |
3832 | const unsigned char *contents, | |
3833 | const unsigned char *end) | |
ea1aaa6f | 3834 | { |
46accb8f | 3835 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3836 | unsigned char buffer[BUFSIZ]; |
3837 | int width, height, x, y; | |
3838 | int num_colors, chars_per_pixel; | |
74ca2eb3 PE |
3839 | ptrdiff_t len; |
3840 | int LA1; | |
46accb8f YM |
3841 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3842 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
3843 | Lisp_Object frame, color_symbols, color_table; |
3844 | int best_key, have_mask = 0; | |
3845 | XImagePtr ximg = NULL, mask_img = NULL; | |
3846 | ||
3847 | #define match() \ | |
3848 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3849 | ||
9ecf6403 YM |
3850 | #define expect(TOKEN) \ |
3851 | if (LA1 != (TOKEN)) \ | |
3852 | goto failure; \ | |
3853 | else \ | |
ea1aaa6f ST |
3854 | match () |
3855 | ||
9ecf6403 | 3856 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3857 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3858 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3859 | match (); \ | |
3860 | else \ | |
ea1aaa6f ST |
3861 | goto failure |
3862 | ||
3863 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3864 | goto failure; | |
3865 | s += 9; | |
ed3751c8 | 3866 | match (); |
ea1aaa6f ST |
3867 | expect_ident ("static"); |
3868 | expect_ident ("char"); | |
3869 | expect ('*'); | |
3870 | expect (XPM_TK_IDENT); | |
3871 | expect ('['); | |
3872 | expect (']'); | |
3873 | expect ('='); | |
3874 | expect ('{'); | |
3875 | expect (XPM_TK_STRING); | |
3876 | if (len >= BUFSIZ) | |
3877 | goto failure; | |
3878 | memcpy (buffer, beg, len); | |
3879 | buffer[len] = '\0'; | |
3880 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3881 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3882 | || width <= 0 || height <= 0 |
3883 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3884 | goto failure; | |
de297941 YM |
3885 | |
3886 | if (!check_image_size (f, width, height)) | |
3887 | { | |
10ea2b82 | 3888 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3889 | goto failure; |
3890 | } | |
3891 | ||
ca4aa935 PE |
3892 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
3893 | &ximg, &img->pixmap) | |
3894 | #ifndef HAVE_NS | |
3895 | || !x_create_x_image_and_pixmap (f, width, height, 1, | |
3896 | &mask_img, &img->mask) | |
3897 | #endif | |
3898 | ) | |
3899 | { | |
3900 | image_error ("Image too large", Qnil, Qnil); | |
3901 | goto failure; | |
3902 | } | |
3903 | ||
ea1aaa6f ST |
3904 | expect (','); |
3905 | ||
3906 | XSETFRAME (frame, f); | |
3907 | if (!NILP (Fxw_display_color_p (frame))) | |
3908 | best_key = XPM_COLOR_KEY_C; | |
3909 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3910 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3911 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3912 | else |
3913 | best_key = XPM_COLOR_KEY_M; | |
3914 | ||
3915 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3916 | if (chars_per_pixel == 1) | |
3917 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3918 | &get_color_table); |
ea1aaa6f ST |
3919 | else |
3920 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3921 | &get_color_table); |
ea1aaa6f ST |
3922 | |
3923 | while (num_colors-- > 0) | |
3924 | { | |
25a48bd0 | 3925 | char *color, *max_color; |
ea1aaa6f ST |
3926 | int key, next_key, max_key = 0; |
3927 | Lisp_Object symbol_color = Qnil, color_val; | |
3928 | XColor cdef; | |
3929 | ||
3930 | expect (XPM_TK_STRING); | |
3931 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3932 | goto failure; |
ea1aaa6f ST |
3933 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3934 | buffer[len - chars_per_pixel] = '\0'; | |
3935 | ||
3936 | str = strtok (buffer, " \t"); | |
3937 | if (str == NULL) | |
9ecf6403 | 3938 | goto failure; |
ea1aaa6f ST |
3939 | key = xpm_str_to_color_key (str); |
3940 | if (key < 0) | |
9ecf6403 | 3941 | goto failure; |
ea1aaa6f | 3942 | do |
9ecf6403 YM |
3943 | { |
3944 | color = strtok (NULL, " \t"); | |
3945 | if (color == NULL) | |
3946 | goto failure; | |
ea1aaa6f | 3947 | |
9db94f82 | 3948 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3949 | { |
3950 | next_key = xpm_str_to_color_key (str); | |
3951 | if (next_key >= 0) | |
3952 | break; | |
3953 | color[strlen (color)] = ' '; | |
3954 | } | |
ea1aaa6f | 3955 | |
9ecf6403 YM |
3956 | if (key == XPM_COLOR_KEY_S) |
3957 | { | |
3958 | if (NILP (symbol_color)) | |
3959 | symbol_color = build_string (color); | |
3960 | } | |
3961 | else if (max_key < key && key <= best_key) | |
3962 | { | |
3963 | max_key = key; | |
3964 | max_color = color; | |
3965 | } | |
3966 | key = next_key; | |
3967 | } | |
ea1aaa6f ST |
3968 | while (str); |
3969 | ||
3970 | color_val = Qnil; | |
3971 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3972 | { |
3973 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3974 | ||
3975 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3976 | { |
25a48bd0 | 3977 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 YM |
3978 | color_val = Qt; |
3979 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
3980 | &cdef, 0)) | |
3981 | color_val = make_number (cdef.pixel); | |
3982 | } | |
9ecf6403 | 3983 | } |
ea1aaa6f | 3984 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3985 | { |
05131107 | 3986 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3987 | color_val = Qt; |
3988 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3989 | color_val = make_number (cdef.pixel); | |
3990 | } | |
ea1aaa6f | 3991 | if (!NILP (color_val)) |
9ecf6403 | 3992 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3993 | |
3994 | expect (','); | |
3995 | } | |
3996 | ||
ea1aaa6f ST |
3997 | for (y = 0; y < height; y++) |
3998 | { | |
3999 | expect (XPM_TK_STRING); | |
4000 | str = beg; | |
4001 | if (len < width * chars_per_pixel) | |
9ecf6403 | 4002 | goto failure; |
ea1aaa6f | 4003 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
4004 | { |
4005 | Lisp_Object color_val = | |
4006 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4007 | ||
4008 | XPutPixel (ximg, x, y, | |
4009 | (INTEGERP (color_val) ? XINT (color_val) | |
4010 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 4011 | #ifndef HAVE_NS |
9ecf6403 YM |
4012 | XPutPixel (mask_img, x, y, |
4013 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
4014 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 4015 | #else |
ed3751c8 JB |
4016 | if (EQ (color_val, Qt)) |
4017 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 4018 | #endif |
9ecf6403 | 4019 | } |
ea1aaa6f | 4020 | if (y + 1 < height) |
9ecf6403 | 4021 | expect (','); |
ea1aaa6f ST |
4022 | } |
4023 | ||
4024 | img->width = width; | |
4025 | img->height = height; | |
4026 | ||
0b8ac842 YM |
4027 | /* Maybe fill in the background field while we have ximg handy. */ |
4028 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4029 | IMAGE_BACKGROUND (img, f, ximg); | |
4030 | ||
ea1aaa6f ST |
4031 | x_put_x_image (f, ximg, img->pixmap, width, height); |
4032 | x_destroy_x_image (ximg); | |
edfda783 | 4033 | #ifndef HAVE_NS |
ea1aaa6f ST |
4034 | if (have_mask) |
4035 | { | |
9ecf6403 YM |
4036 | /* Fill in the background_transparent field while we have the |
4037 | mask handy. */ | |
4038 | image_background_transparent (img, f, mask_img); | |
4039 | ||
ea1aaa6f ST |
4040 | x_put_x_image (f, mask_img, img->mask, width, height); |
4041 | x_destroy_x_image (mask_img); | |
4042 | } | |
4043 | else | |
4044 | { | |
4045 | x_destroy_x_image (mask_img); | |
4046 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4047 | img->mask = NO_PIXMAP; | |
4048 | } | |
edfda783 | 4049 | #endif |
ea1aaa6f ST |
4050 | return 1; |
4051 | ||
4052 | failure: | |
4053 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4054 | error: | |
4055 | x_destroy_x_image (ximg); | |
4056 | x_destroy_x_image (mask_img); | |
4057 | x_clear_image (f, img); | |
4058 | return 0; | |
4059 | ||
4060 | #undef match | |
4061 | #undef expect | |
4062 | #undef expect_ident | |
4063 | } | |
4064 | ||
4065 | static int | |
3d608a86 J |
4066 | xpm_load (struct frame *f, |
4067 | struct image *img) | |
ea1aaa6f ST |
4068 | { |
4069 | int success_p = 0; | |
4070 | Lisp_Object file_name; | |
4071 | ||
4072 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4073 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4074 | if (STRINGP (file_name)) | |
4075 | { | |
4076 | Lisp_Object file; | |
4077 | unsigned char *contents; | |
dd52fcea | 4078 | ptrdiff_t size; |
ea1aaa6f ST |
4079 | |
4080 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4081 | if (!STRINGP (file)) |
9ecf6403 YM |
4082 | { |
4083 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4084 | return 0; |
4085 | } | |
ea1aaa6f ST |
4086 | |
4087 | contents = slurp_file (SDATA (file), &size); | |
4088 | if (contents == NULL) | |
9ecf6403 YM |
4089 | { |
4090 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4091 | return 0; |
4092 | } | |
ea1aaa6f ST |
4093 | |
4094 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4095 | xfree (contents); | |
ea1aaa6f ST |
4096 | } |
4097 | else | |
4098 | { | |
4099 | Lisp_Object data; | |
4100 | ||
4101 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4102 | if (!STRINGP (data)) |
4103 | { | |
4104 | image_error ("Invalid image data `%s'", data, Qnil); | |
4105 | return 0; | |
4106 | } | |
ea1aaa6f | 4107 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4108 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4109 | } |
4110 | ||
4111 | return success_p; | |
4112 | } | |
4113 | ||
9e2a2647 | 4114 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4115 | |
ea1aaa6f | 4116 | |
4ef0d4d0 KS |
4117 | \f |
4118 | /*********************************************************************** | |
4119 | Color table | |
4120 | ***********************************************************************/ | |
4121 | ||
4122 | #ifdef COLOR_TABLE_SUPPORT | |
4123 | ||
4124 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4125 | ||
4126 | struct ct_color | |
4127 | { | |
4128 | int r, g, b; | |
4129 | unsigned long pixel; | |
4130 | ||
4131 | /* Next in color table collision list. */ | |
4132 | struct ct_color *next; | |
4133 | }; | |
4134 | ||
4135 | /* The bucket vector size to use. Must be prime. */ | |
4136 | ||
4137 | #define CT_SIZE 101 | |
4138 | ||
4139 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4140 | ||
4141 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4142 | ||
4143 | /* The color hash table. */ | |
4144 | ||
cd44d2eb | 4145 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4146 | |
4147 | /* Number of entries in the color table. */ | |
4148 | ||
cd44d2eb | 4149 | static int ct_colors_allocated; |
ddff3151 PE |
4150 | enum |
4151 | { | |
4152 | ct_colors_allocated_max = | |
4153 | min (INT_MAX, | |
4154 | min (PTRDIFF_MAX, SIZE_MAX) / sizeof (unsigned long)) | |
4155 | }; | |
4ef0d4d0 KS |
4156 | |
4157 | /* Initialize the color table. */ | |
4158 | ||
4159 | static void | |
d3da34e0 | 4160 | init_color_table (void) |
4ef0d4d0 KS |
4161 | { |
4162 | int size = CT_SIZE * sizeof (*ct_table); | |
4163 | ct_table = (struct ct_color **) xmalloc (size); | |
72af86bd | 4164 | memset (ct_table, 0, size); |
4ef0d4d0 KS |
4165 | ct_colors_allocated = 0; |
4166 | } | |
4167 | ||
4168 | ||
4169 | /* Free memory associated with the color table. */ | |
4170 | ||
4171 | static void | |
d3da34e0 | 4172 | free_color_table (void) |
4ef0d4d0 KS |
4173 | { |
4174 | int i; | |
4175 | struct ct_color *p, *next; | |
4176 | ||
4177 | for (i = 0; i < CT_SIZE; ++i) | |
4178 | for (p = ct_table[i]; p; p = next) | |
4179 | { | |
4180 | next = p->next; | |
4181 | xfree (p); | |
4182 | } | |
4183 | ||
4184 | xfree (ct_table); | |
4185 | ct_table = NULL; | |
4186 | } | |
4187 | ||
4188 | ||
4189 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4190 | entry for that color already is in the color table, return the | |
4191 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4192 | G, B, and make an entry in the color table. */ | |
4193 | ||
4194 | static unsigned long | |
d3da34e0 | 4195 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4196 | { |
4197 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4198 | int i = hash % CT_SIZE; | |
4199 | struct ct_color *p; | |
4200 | Display_Info *dpyinfo; | |
4201 | ||
4202 | /* Handle TrueColor visuals specially, which improves performance by | |
4203 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4204 | a nop, and pixel colors specify RGB values directly. See also | |
4205 | the Xlib spec, chapter 3.1. */ | |
4206 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4207 | if (dpyinfo->red_bits > 0) | |
4208 | { | |
4209 | unsigned long pr, pg, pb; | |
4210 | ||
4211 | /* Apply gamma-correction like normal color allocation does. */ | |
4212 | if (f->gamma) | |
4213 | { | |
4214 | XColor color; | |
4215 | color.red = r, color.green = g, color.blue = b; | |
4216 | gamma_correct (f, &color); | |
4217 | r = color.red, g = color.green, b = color.blue; | |
4218 | } | |
4219 | ||
4220 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4221 | them to the right position in the pixel color. Note that the | |
4222 | original RGB values are 16-bit values, as usual in X. */ | |
4223 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4224 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4225 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4226 | ||
4227 | /* Assemble the pixel color. */ | |
4228 | return pr | pg | pb; | |
4229 | } | |
1f026899 | 4230 | |
4ef0d4d0 KS |
4231 | for (p = ct_table[i]; p; p = p->next) |
4232 | if (p->r == r && p->g == g && p->b == b) | |
4233 | break; | |
4234 | ||
4235 | if (p == NULL) | |
4236 | { | |
4237 | ||
4238 | #ifdef HAVE_X_WINDOWS | |
4239 | XColor color; | |
4240 | Colormap cmap; | |
4241 | int rc; | |
ddff3151 PE |
4242 | #else |
4243 | COLORREF color; | |
4244 | #endif | |
4ef0d4d0 | 4245 | |
ddff3151 PE |
4246 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4247 | return FRAME_FOREGROUND_PIXEL (f); | |
4248 | ||
4249 | #ifdef HAVE_X_WINDOWS | |
4ef0d4d0 KS |
4250 | color.red = r; |
4251 | color.green = g; | |
4252 | color.blue = b; | |
4253 | ||
4254 | cmap = FRAME_X_COLORMAP (f); | |
4255 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4256 | if (rc) | |
4257 | { | |
4258 | ++ct_colors_allocated; | |
4259 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4260 | p->r = r; | |
4261 | p->g = g; | |
4262 | p->b = b; | |
4263 | p->pixel = color.pixel; | |
4264 | p->next = ct_table[i]; | |
4265 | ct_table[i] = p; | |
4266 | } | |
4267 | else | |
4268 | return FRAME_FOREGROUND_PIXEL (f); | |
4269 | ||
4270 | #else | |
4ef0d4d0 KS |
4271 | #ifdef HAVE_NTGUI |
4272 | color = PALETTERGB (r, g, b); | |
4273 | #else | |
4274 | color = RGB_TO_ULONG (r, g, b); | |
4275 | #endif /* HAVE_NTGUI */ | |
4276 | ++ct_colors_allocated; | |
4277 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4278 | p->r = r; | |
4279 | p->g = g; | |
4280 | p->b = b; | |
4281 | p->pixel = color; | |
4282 | p->next = ct_table[i]; | |
4283 | ct_table[i] = p; | |
4284 | #endif /* HAVE_X_WINDOWS */ | |
4285 | ||
4286 | } | |
4287 | ||
4288 | return p->pixel; | |
4289 | } | |
4290 | ||
4291 | ||
4292 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4293 | table. If not already present, allocate it. Value is PIXEL. */ | |
4294 | ||
4295 | static unsigned long | |
d3da34e0 | 4296 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4297 | { |
4298 | int i = pixel % CT_SIZE; | |
4299 | struct ct_color *p; | |
4300 | ||
4301 | for (p = ct_table[i]; p; p = p->next) | |
4302 | if (p->pixel == pixel) | |
4303 | break; | |
4304 | ||
4305 | if (p == NULL) | |
4306 | { | |
4307 | XColor color; | |
4308 | Colormap cmap; | |
4309 | int rc; | |
4310 | ||
ddff3151 PE |
4311 | if (ct_colors_allocated_max <= ct_colors_allocated) |
4312 | return FRAME_FOREGROUND_PIXEL (f); | |
4313 | ||
4ef0d4d0 KS |
4314 | #ifdef HAVE_X_WINDOWS |
4315 | cmap = FRAME_X_COLORMAP (f); | |
4316 | color.pixel = pixel; | |
4317 | x_query_color (f, &color); | |
4318 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4319 | #else | |
4320 | BLOCK_INPUT; | |
4321 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4322 | color.pixel = pixel; | |
4323 | XQueryColor (NULL, cmap, &color); | |
4324 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4325 | UNBLOCK_INPUT; | |
4326 | #endif /* HAVE_X_WINDOWS */ | |
4327 | ||
4328 | if (rc) | |
4329 | { | |
4330 | ++ct_colors_allocated; | |
4331 | ||
4332 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4333 | p->r = color.red; | |
4334 | p->g = color.green; | |
4335 | p->b = color.blue; | |
4336 | p->pixel = pixel; | |
4337 | p->next = ct_table[i]; | |
4338 | ct_table[i] = p; | |
4339 | } | |
4340 | else | |
4341 | return FRAME_FOREGROUND_PIXEL (f); | |
4342 | } | |
4343 | return p->pixel; | |
4344 | } | |
4345 | ||
4346 | ||
4347 | /* Value is a vector of all pixel colors contained in the color table, | |
4348 | allocated via xmalloc. Set *N to the number of colors. */ | |
4349 | ||
4350 | static unsigned long * | |
d3da34e0 | 4351 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4352 | { |
4353 | int i, j; | |
4354 | struct ct_color *p; | |
4355 | unsigned long *colors; | |
4356 | ||
4357 | if (ct_colors_allocated == 0) | |
4358 | { | |
4359 | *n = 0; | |
4360 | colors = NULL; | |
4361 | } | |
4362 | else | |
4363 | { | |
4364 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4365 | * sizeof *colors); | |
4366 | *n = ct_colors_allocated; | |
4367 | ||
4368 | for (i = j = 0; i < CT_SIZE; ++i) | |
4369 | for (p = ct_table[i]; p; p = p->next) | |
4370 | colors[j++] = p->pixel; | |
4371 | } | |
4372 | ||
4373 | return colors; | |
4374 | } | |
4375 | ||
4376 | #else /* COLOR_TABLE_SUPPORT */ | |
4377 | ||
4378 | static unsigned long | |
7c3320d8 | 4379 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4380 | { |
4381 | unsigned long pixel; | |
4382 | ||
4ef0d4d0 KS |
4383 | #ifdef HAVE_NTGUI |
4384 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4385 | #endif /* HAVE_NTGUI */ | |
4386 | ||
edfda783 AR |
4387 | #ifdef HAVE_NS |
4388 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4389 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4390 | return pixel; |
4391 | } | |
4392 | ||
4393 | static void | |
7c3320d8 | 4394 | init_color_table (void) |
4ef0d4d0 KS |
4395 | { |
4396 | } | |
4397 | #endif /* COLOR_TABLE_SUPPORT */ | |
4398 | ||
4399 | \f | |
4400 | /*********************************************************************** | |
4401 | Algorithms | |
4402 | ***********************************************************************/ | |
4403 | ||
f57e2426 J |
4404 | static XColor *x_to_xcolors (struct frame *, struct image *, int); |
4405 | static void x_from_xcolors (struct frame *, struct image *, XColor *); | |
4406 | static void x_detect_edges (struct frame *, struct image *, int[9], int); | |
4ef0d4d0 KS |
4407 | |
4408 | #ifdef HAVE_NTGUI | |
4409 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4410 | #endif /* HAVE_NTGUI */ | |
4411 | ||
4ef0d4d0 KS |
4412 | /* Edge detection matrices for different edge-detection |
4413 | strategies. */ | |
4414 | ||
4415 | static int emboss_matrix[9] = { | |
4416 | /* x - 1 x x + 1 */ | |
4417 | 2, -1, 0, /* y - 1 */ | |
4418 | -1, 0, 1, /* y */ | |
4419 | 0, 1, -2 /* y + 1 */ | |
4420 | }; | |
4421 | ||
4422 | static int laplace_matrix[9] = { | |
4423 | /* x - 1 x x + 1 */ | |
4424 | 1, 0, 0, /* y - 1 */ | |
4425 | 0, 0, 0, /* y */ | |
4426 | 0, 0, -1 /* y + 1 */ | |
4427 | }; | |
4428 | ||
4429 | /* Value is the intensity of the color whose red/green/blue values | |
4430 | are R, G, and B. */ | |
4431 | ||
4432 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4433 | ||
4434 | ||
4435 | /* On frame F, return an array of XColor structures describing image | |
4436 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4437 | non-zero means also fill the red/green/blue members of the XColor | |
4438 | structures. Value is a pointer to the array of XColors structures, | |
4439 | allocated with xmalloc; it must be freed by the caller. */ | |
4440 | ||
4441 | static XColor * | |
d3da34e0 | 4442 | x_to_xcolors (struct frame *f, struct image *img, int rgb_p) |
4ef0d4d0 KS |
4443 | { |
4444 | int x, y; | |
4445 | XColor *colors, *p; | |
4446 | XImagePtr_or_DC ximg; | |
4447 | #ifdef HAVE_NTGUI | |
4448 | HDC hdc; | |
4449 | HGDIOBJ prev; | |
4450 | #endif /* HAVE_NTGUI */ | |
4451 | ||
ddff3151 PE |
4452 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *colors / img->width < img->height) |
4453 | memory_full (SIZE_MAX); | |
4454 | colors = (XColor *) xmalloc (sizeof *colors * img->width * img->height); | |
4ef0d4d0 KS |
4455 | |
4456 | #ifndef HAVE_NTGUI | |
4457 | /* Get the X image IMG->pixmap. */ | |
4458 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4459 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4460 | #else | |
4461 | /* Load the image into a memory device context. */ | |
4462 | hdc = get_frame_dc (f); | |
4463 | ximg = CreateCompatibleDC (hdc); | |
4464 | release_frame_dc (f, hdc); | |
4465 | prev = SelectObject (ximg, img->pixmap); | |
4466 | #endif /* HAVE_NTGUI */ | |
4467 | ||
4468 | /* Fill the `pixel' members of the XColor array. I wished there | |
4469 | were an easy and portable way to circumvent XGetPixel. */ | |
4470 | p = colors; | |
4471 | for (y = 0; y < img->height; ++y) | |
4472 | { | |
4473 | XColor *row = p; | |
4474 | ||
8b7d0a16 | 4475 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 | 4476 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4477 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4478 | if (rgb_p) |
4479 | x_query_colors (f, row, img->width); | |
4480 | ||
4481 | #else | |
4482 | ||
4483 | for (x = 0; x < img->width; ++x, ++p) | |
4484 | { | |
4485 | /* W32_TODO: palette support needed here? */ | |
4486 | p->pixel = GET_PIXEL (ximg, x, y); | |
4487 | if (rgb_p) | |
4488 | { | |
4ef0d4d0 KS |
4489 | p->red = RED16_FROM_ULONG (p->pixel); |
4490 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4491 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4492 | } |
4493 | } | |
4494 | #endif /* HAVE_X_WINDOWS */ | |
4495 | } | |
4496 | ||
4497 | Destroy_Image (ximg, prev); | |
4498 | ||
4499 | return colors; | |
4500 | } | |
4501 | ||
4502 | #ifdef HAVE_NTGUI | |
4503 | ||
4504 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4505 | created with CreateDIBSection, with the pointer to the bit values | |
4506 | stored in ximg->data. */ | |
4507 | ||
3046a84b | 4508 | static void |
7c3320d8 | 4509 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4510 | { |
4511 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4512 | unsigned char * pixel; |
4513 | ||
4514 | /* True color images. */ | |
4515 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4516 | { | |
4517 | int rowbytes = width * 3; | |
4518 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4519 | if (rowbytes % 4) | |
4520 | rowbytes += 4 - (rowbytes % 4); | |
4521 | ||
4522 | pixel = ximg->data + y * rowbytes + x * 3; | |
4523 | /* Windows bitmaps are in BGR order. */ | |
4524 | *pixel = GetBValue (color); | |
4525 | *(pixel + 1) = GetGValue (color); | |
4526 | *(pixel + 2) = GetRValue (color); | |
4527 | } | |
4528 | /* Monochrome images. */ | |
4529 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4530 | { | |
4531 | int rowbytes = width / 8; | |
4532 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4533 | if (rowbytes % 4) | |
4534 | rowbytes += 4 - (rowbytes % 4); | |
4535 | pixel = ximg->data + y * rowbytes + x / 8; | |
4536 | /* Filter out palette info. */ | |
4537 | if (color & 0x00ffffff) | |
4538 | *pixel = *pixel | (1 << x % 8); | |
4539 | else | |
4540 | *pixel = *pixel & ~(1 << x % 8); | |
4541 | } | |
4542 | else | |
4543 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4544 | } | |
4545 | ||
4546 | #endif /* HAVE_NTGUI */ | |
4547 | ||
4548 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4549 | RGB members are set. F is the frame on which this all happens. | |
4550 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4551 | ||
4552 | static void | |
d3da34e0 | 4553 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4554 | { |
4555 | int x, y; | |
edfda783 | 4556 | XImagePtr oimg = NULL; |
9d7112ed | 4557 | Pixmap pixmap; |
4ef0d4d0 KS |
4558 | XColor *p; |
4559 | ||
4560 | init_color_table (); | |
4561 | ||
4562 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4563 | &oimg, &pixmap); | |
4564 | p = colors; | |
4565 | for (y = 0; y < img->height; ++y) | |
4566 | for (x = 0; x < img->width; ++x, ++p) | |
4567 | { | |
4568 | unsigned long pixel; | |
4569 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4570 | XPutPixel (oimg, x, y, pixel); | |
4571 | } | |
4572 | ||
4573 | xfree (colors); | |
4574 | x_clear_image_1 (f, img, 1, 0, 1); | |
4575 | ||
4576 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4577 | x_destroy_x_image (oimg); | |
4578 | img->pixmap = pixmap; | |
4579 | #ifdef COLOR_TABLE_SUPPORT | |
4580 | img->colors = colors_in_color_table (&img->ncolors); | |
4581 | free_color_table (); | |
4582 | #endif /* COLOR_TABLE_SUPPORT */ | |
4583 | } | |
4584 | ||
4585 | ||
4586 | /* On frame F, perform edge-detection on image IMG. | |
4587 | ||
4588 | MATRIX is a nine-element array specifying the transformation | |
4589 | matrix. See emboss_matrix for an example. | |
4590 | ||
4591 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4592 | outgoing image. */ | |
4593 | ||
4594 | static void | |
d3da34e0 | 4595 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4596 | { |
4597 | XColor *colors = x_to_xcolors (f, img, 1); | |
4598 | XColor *new, *p; | |
4599 | int x, y, i, sum; | |
4600 | ||
4601 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4602 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4603 | |
4604 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4605 | ||
ddff3151 PE |
4606 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *new / img->width < img->height) |
4607 | memory_full (SIZE_MAX); | |
4608 | new = (XColor *) xmalloc (sizeof *new * img->width * img->height); | |
4ef0d4d0 KS |
4609 | |
4610 | for (y = 0; y < img->height; ++y) | |
4611 | { | |
4612 | p = COLOR (new, 0, y); | |
4613 | p->red = p->green = p->blue = 0xffff/2; | |
4614 | p = COLOR (new, img->width - 1, y); | |
4615 | p->red = p->green = p->blue = 0xffff/2; | |
4616 | } | |
4617 | ||
4618 | for (x = 1; x < img->width - 1; ++x) | |
4619 | { | |
4620 | p = COLOR (new, x, 0); | |
4621 | p->red = p->green = p->blue = 0xffff/2; | |
4622 | p = COLOR (new, x, img->height - 1); | |
4623 | p->red = p->green = p->blue = 0xffff/2; | |
4624 | } | |
4625 | ||
4626 | for (y = 1; y < img->height - 1; ++y) | |
4627 | { | |
4628 | p = COLOR (new, 1, y); | |
4629 | ||
4630 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4631 | { | |
6ae141d6 | 4632 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4633 | |
4634 | r = g = b = i = 0; | |
6ae141d6 PE |
4635 | for (yy = y - 1; yy < y + 2; ++yy) |
4636 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4637 | if (matrix[i]) |
4638 | { | |
6ae141d6 | 4639 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4640 | r += matrix[i] * t->red; |
4641 | g += matrix[i] * t->green; | |
4642 | b += matrix[i] * t->blue; | |
4643 | } | |
4644 | ||
4645 | r = (r / sum + color_adjust) & 0xffff; | |
4646 | g = (g / sum + color_adjust) & 0xffff; | |
4647 | b = (b / sum + color_adjust) & 0xffff; | |
4648 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4649 | } | |
4650 | } | |
4651 | ||
4652 | xfree (colors); | |
4653 | x_from_xcolors (f, img, new); | |
4654 | ||
4655 | #undef COLOR | |
4656 | } | |
4657 | ||
4658 | ||
4659 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4660 | on frame F. */ | |
4661 | ||
4662 | static void | |
d3da34e0 | 4663 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4664 | { |
4665 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4666 | } | |
4667 | ||
4668 | ||
4669 | /* Transform image IMG which is used on frame F with a Laplace | |
4670 | edge-detection algorithm. The result is an image that can be used | |
4671 | to draw disabled buttons, for example. */ | |
4672 | ||
4673 | static void | |
d3da34e0 | 4674 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4675 | { |
4676 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4677 | } | |
4678 | ||
4679 | ||
4680 | /* Perform edge-detection on image IMG on frame F, with specified | |
4681 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4682 | ||
4683 | MATRIX must be either | |
4684 | ||
4685 | - a list of at least 9 numbers in row-major form | |
4686 | - a vector of at least 9 numbers | |
4687 | ||
4688 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4689 | number. */ | |
4690 | ||
4691 | static void | |
d3da34e0 JB |
4692 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4693 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4694 | { |
4695 | int i = 0; | |
4696 | int trans[9]; | |
4697 | ||
4698 | if (CONSP (matrix)) | |
4699 | { | |
4700 | for (i = 0; | |
4701 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4702 | ++i, matrix = XCDR (matrix)) | |
4703 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4704 | } | |
4705 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4706 | { | |
4707 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4708 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4709 | } | |
4710 | ||
4711 | if (NILP (color_adjust)) | |
4712 | color_adjust = make_number (0xffff / 2); | |
4713 | ||
4714 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4715 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4716 | } |
4717 | ||
4718 | ||
4719 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4720 | ||
4721 | static void | |
d3da34e0 | 4722 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4723 | { |
4724 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4725 | #ifdef HAVE_NTGUI | |
4726 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4727 | #else | |
4728 | int n_planes = dpyinfo->n_planes; | |
4729 | #endif /* HAVE_NTGUI */ | |
4730 | ||
4731 | if (n_planes >= 2) | |
4732 | { | |
4733 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4734 | drawing such images with a stipple can look very odd, so | |
4735 | we're using this method instead. */ | |
4736 | XColor *colors = x_to_xcolors (f, img, 1); | |
4737 | XColor *p, *end; | |
4738 | const int h = 15000; | |
4739 | const int l = 30000; | |
4740 | ||
4741 | for (p = colors, end = colors + img->width * img->height; | |
4742 | p < end; | |
4743 | ++p) | |
4744 | { | |
4745 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4746 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4747 | p->red = p->green = p->blue = i2; | |
4748 | } | |
4749 | ||
4750 | x_from_xcolors (f, img, colors); | |
4751 | } | |
4752 | ||
4753 | /* Draw a cross over the disabled image, if we must or if we | |
4754 | should. */ | |
4755 | if (n_planes < 2 || cross_disabled_images) | |
4756 | { | |
4757 | #ifndef HAVE_NTGUI | |
4758 | Display *dpy = FRAME_X_DISPLAY (f); | |
4759 | GC gc; | |
4760 | ||
5afa3a81 | 4761 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4762 | |
4ef0d4d0 | 4763 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4764 | |
ae8279db | 4765 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); |
4ef0d4d0 KS |
4766 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4767 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4768 | img->width - 1, img->height - 1); | |
4769 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4770 | img->width - 1, 0); | |
4771 | XFreeGC (dpy, gc); | |
4772 | ||
4773 | if (img->mask) | |
4774 | { | |
ae8279db | 4775 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4776 | XSetForeground (dpy, gc, MaskForeground (f)); |
4777 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4778 | img->width - 1, img->height - 1); | |
4779 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4780 | img->width - 1, 0); | |
4781 | XFreeGC (dpy, gc); | |
4782 | } | |
edfda783 | 4783 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4784 | #else |
4785 | HDC hdc, bmpdc; | |
4786 | HGDIOBJ prev; | |
4787 | ||
4788 | hdc = get_frame_dc (f); | |
4789 | bmpdc = CreateCompatibleDC (hdc); | |
4790 | release_frame_dc (f, hdc); | |
4791 | ||
4792 | prev = SelectObject (bmpdc, img->pixmap); | |
4793 | ||
4794 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4795 | MoveToEx (bmpdc, 0, 0, NULL); | |
4796 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4797 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4798 | LineTo (bmpdc, img->width - 1, 0); | |
4799 | ||
4800 | if (img->mask) | |
4801 | { | |
4802 | SelectObject (bmpdc, img->mask); | |
4803 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4804 | MoveToEx (bmpdc, 0, 0, NULL); | |
4805 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4806 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4807 | LineTo (bmpdc, img->width - 1, 0); | |
4808 | } | |
4809 | SelectObject (bmpdc, prev); | |
4810 | DeleteDC (bmpdc); | |
4811 | #endif /* HAVE_NTGUI */ | |
4812 | } | |
4813 | } | |
4814 | ||
4815 | ||
4816 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4817 | name of an image file, for error messages. HOW determines how to | |
4818 | determine the background color of IMG. If it is a list '(R G B)', | |
4819 | with R, G, and B being integers >= 0, take that as the color of the | |
4820 | background. Otherwise, determine the background color of IMG | |
4821 | heuristically. Value is non-zero if successful. */ | |
4822 | ||
4823 | static int | |
d3da34e0 | 4824 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4825 | { |
4826 | XImagePtr_or_DC ximg; | |
4827 | #ifndef HAVE_NTGUI | |
4828 | XImagePtr mask_img; | |
4829 | #else | |
4830 | HDC frame_dc; | |
4831 | HGDIOBJ prev; | |
4832 | char *mask_img; | |
4833 | int row_width; | |
4834 | #endif /* HAVE_NTGUI */ | |
4835 | int x, y, rc, use_img_background; | |
4836 | unsigned long bg = 0; | |
4837 | ||
4838 | if (img->mask) | |
4839 | { | |
4840 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4841 | img->mask = NO_PIXMAP; | |
4842 | img->background_transparent_valid = 0; | |
4843 | } | |
4844 | ||
4845 | #ifndef HAVE_NTGUI | |
edfda783 | 4846 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4847 | /* Create an image and pixmap serving as mask. */ |
4848 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4849 | &mask_img, &img->mask); | |
4850 | if (!rc) | |
4851 | return 0; | |
edfda783 | 4852 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4853 | |
4854 | /* Get the X image of IMG->pixmap. */ | |
4855 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4856 | img->width, img->height, | |
4857 | ~0, ZPixmap); | |
4858 | #else | |
4859 | /* Create the bit array serving as mask. */ | |
4860 | row_width = (img->width + 7) / 8; | |
4861 | mask_img = xmalloc (row_width * img->height); | |
72af86bd | 4862 | memset (mask_img, 0, row_width * img->height); |
4ef0d4d0 KS |
4863 | |
4864 | /* Create a memory device context for IMG->pixmap. */ | |
4865 | frame_dc = get_frame_dc (f); | |
4866 | ximg = CreateCompatibleDC (frame_dc); | |
4867 | release_frame_dc (f, frame_dc); | |
4868 | prev = SelectObject (ximg, img->pixmap); | |
4869 | #endif /* HAVE_NTGUI */ | |
4870 | ||
4871 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4872 | take that as color. Otherwise, use the image's background color. */ | |
4873 | use_img_background = 1; | |
4874 | ||
4875 | if (CONSP (how)) | |
4876 | { | |
4877 | int rgb[3], i; | |
4878 | ||
4879 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4880 | { | |
4881 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4882 | how = XCDR (how); | |
4883 | } | |
4884 | ||
4885 | if (i == 3 && NILP (how)) | |
4886 | { | |
4887 | char color_name[30]; | |
4888 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4889 | bg = ( | |
4890 | #ifdef HAVE_NTGUI | |
4891 | 0x00ffffff & /* Filter out palette info. */ | |
4892 | #endif /* HAVE_NTGUI */ | |
4893 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4894 | use_img_background = 0; | |
4895 | } | |
4896 | } | |
4897 | ||
4898 | if (use_img_background) | |
6ac3c7bb | 4899 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4900 | |
4901 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4902 | from the background color bg. */ | |
4903 | #ifndef HAVE_NTGUI | |
4904 | for (y = 0; y < img->height; ++y) | |
4905 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4906 | #ifndef HAVE_NS |
4ef0d4d0 | 4907 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4908 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4909 | #else |
4910 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4911 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4912 | #endif /* HAVE_NS */ |
4913 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4914 | /* Fill in the background_transparent field while we have the mask handy. */ |
4915 | image_background_transparent (img, f, mask_img); | |
4916 | ||
4917 | /* Put mask_img into img->mask. */ | |
4918 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4919 | x_destroy_x_image (mask_img); | |
edfda783 | 4920 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4921 | #else |
4922 | for (y = 0; y < img->height; ++y) | |
4923 | for (x = 0; x < img->width; ++x) | |
4924 | { | |
4925 | COLORREF p = GetPixel (ximg, x, y); | |
4926 | if (p != bg) | |
4927 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4928 | } | |
4929 | ||
4930 | /* Create the mask image. */ | |
4931 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4932 | mask_img); | |
4933 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4934 | SelectObject (ximg, img->mask); | |
4935 | image_background_transparent (img, f, ximg); | |
4936 | ||
4937 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4938 | xfree (mask_img); | |
4939 | #endif /* HAVE_NTGUI */ | |
4940 | ||
4941 | Destroy_Image (ximg, prev); | |
4942 | ||
4943 | return 1; | |
4944 | } | |
4945 | ||
4946 | \f | |
4947 | /*********************************************************************** | |
4948 | PBM (mono, gray, color) | |
4949 | ***********************************************************************/ | |
4950 | ||
f57e2426 J |
4951 | static int pbm_image_p (Lisp_Object object); |
4952 | static int pbm_load (struct frame *f, struct image *img); | |
4953 | static int pbm_scan_number (unsigned char **, unsigned char *); | |
4ef0d4d0 KS |
4954 | |
4955 | /* The symbol `pbm' identifying images of this type. */ | |
4956 | ||
955cbe7b | 4957 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
4958 | |
4959 | /* Indices of image specification fields in gs_format, below. */ | |
4960 | ||
4961 | enum pbm_keyword_index | |
4962 | { | |
4963 | PBM_TYPE, | |
4964 | PBM_FILE, | |
4965 | PBM_DATA, | |
4966 | PBM_ASCENT, | |
4967 | PBM_MARGIN, | |
4968 | PBM_RELIEF, | |
4969 | PBM_ALGORITHM, | |
4970 | PBM_HEURISTIC_MASK, | |
4971 | PBM_MASK, | |
4972 | PBM_FOREGROUND, | |
4973 | PBM_BACKGROUND, | |
4974 | PBM_LAST | |
4975 | }; | |
4976 | ||
4977 | /* Vector of image_keyword structures describing the format | |
4978 | of valid user-defined image specifications. */ | |
4979 | ||
91433552 | 4980 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
4981 | { |
4982 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4983 | {":file", IMAGE_STRING_VALUE, 0}, | |
4984 | {":data", IMAGE_STRING_VALUE, 0}, | |
4985 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 4986 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
4987 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
4988 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4989 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4990 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4991 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4992 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4993 | }; | |
4994 | ||
4995 | /* Structure describing the image type `pbm'. */ | |
4996 | ||
4997 | static struct image_type pbm_type = | |
4998 | { | |
4999 | &Qpbm, | |
5000 | pbm_image_p, | |
5001 | pbm_load, | |
5002 | x_clear_image, | |
5003 | NULL | |
5004 | }; | |
5005 | ||
5006 | ||
5007 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
5008 | ||
5009 | static int | |
d3da34e0 | 5010 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5011 | { |
5012 | struct image_keyword fmt[PBM_LAST]; | |
5013 | ||
72af86bd | 5014 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5015 | |
5016 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
5017 | return 0; | |
5018 | ||
5019 | /* Must specify either :data or :file. */ | |
5020 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
5021 | } | |
5022 | ||
5023 | ||
5024 | /* Scan a decimal number from *S and return it. Advance *S while | |
5025 | reading the number. END is the end of the string. Value is -1 at | |
5026 | end of input. */ | |
5027 | ||
5028 | static int | |
d3da34e0 | 5029 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
5030 | { |
5031 | int c = 0, val = -1; | |
5032 | ||
5033 | while (*s < end) | |
5034 | { | |
5035 | /* Skip white-space. */ | |
5036 | while (*s < end && (c = *(*s)++, isspace (c))) | |
5037 | ; | |
5038 | ||
5039 | if (c == '#') | |
5040 | { | |
5041 | /* Skip comment to end of line. */ | |
5042 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5043 | ; | |
5044 | } | |
5045 | else if (isdigit (c)) | |
5046 | { | |
5047 | /* Read decimal number. */ | |
5048 | val = c - '0'; | |
5049 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
5050 | val = 10 * val + c - '0'; | |
5051 | break; | |
5052 | } | |
5053 | else | |
5054 | break; | |
5055 | } | |
5056 | ||
5057 | return val; | |
5058 | } | |
5059 | ||
5060 | ||
5061 | #ifdef HAVE_NTGUI | |
5062 | #if 0 /* Unused. ++kfs */ | |
5063 | ||
5064 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5065 | with xmalloc holding FILE's contents. Value is null if an error | |
5066 | occurred. *SIZE is set to the size of the file. */ | |
5067 | ||
5068 | static char * | |
1dae0f0a | 5069 | pbm_read_file (Lisp_Object file, int *size) |
4ef0d4d0 KS |
5070 | { |
5071 | FILE *fp = NULL; | |
5072 | char *buf = NULL; | |
5073 | struct stat st; | |
5074 | ||
5075 | if (stat (SDATA (file), &st) == 0 | |
5076 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
dd52fcea | 5077 | && 0 <= st.st_size && st.st_size <= min (PTRDIFF_MAX, SIZE_MAX) |
4ef0d4d0 KS |
5078 | && (buf = (char *) xmalloc (st.st_size), |
5079 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5080 | { | |
5081 | *size = st.st_size; | |
5082 | fclose (fp); | |
5083 | } | |
5084 | else | |
5085 | { | |
5086 | if (fp) | |
5087 | fclose (fp); | |
5088 | if (buf) | |
5089 | { | |
5090 | xfree (buf); | |
5091 | buf = NULL; | |
5092 | } | |
5093 | } | |
5094 | ||
5095 | return buf; | |
5096 | } | |
5097 | #endif | |
5098 | #endif /* HAVE_NTGUI */ | |
5099 | ||
5100 | /* Load PBM image IMG for use on frame F. */ | |
5101 | ||
5102 | static int | |
d3da34e0 | 5103 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5104 | { |
5105 | int raw_p, x, y; | |
5106 | int width, height, max_color_idx = 0; | |
5107 | XImagePtr ximg; | |
5108 | Lisp_Object file, specified_file; | |
5109 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5110 | unsigned char *contents = NULL; |
5111 | unsigned char *end, *p; | |
dd52fcea | 5112 | ptrdiff_t size; |
4ef0d4d0 KS |
5113 | |
5114 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5115 | |
5116 | if (STRINGP (specified_file)) | |
5117 | { | |
5118 | file = x_find_image_file (specified_file); | |
5119 | if (!STRINGP (file)) | |
5120 | { | |
5121 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5122 | return 0; |
5123 | } | |
5124 | ||
42a5b22f | 5125 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5126 | if (contents == NULL) |
5127 | { | |
5128 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5129 | return 0; |
5130 | } | |
5131 | ||
5132 | p = contents; | |
5133 | end = contents + size; | |
5134 | } | |
5135 | else | |
5136 | { | |
5137 | Lisp_Object data; | |
5138 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5139 | if (!STRINGP (data)) |
5140 | { | |
5141 | image_error ("Invalid image data `%s'", data, Qnil); | |
5142 | return 0; | |
5143 | } | |
4ef0d4d0 KS |
5144 | p = SDATA (data); |
5145 | end = p + SBYTES (data); | |
5146 | } | |
5147 | ||
5148 | /* Check magic number. */ | |
5149 | if (end - p < 2 || *p++ != 'P') | |
5150 | { | |
5151 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5152 | error: | |
5153 | xfree (contents); | |
4ef0d4d0 KS |
5154 | return 0; |
5155 | } | |
5156 | ||
5157 | switch (*p++) | |
5158 | { | |
5159 | case '1': | |
5160 | raw_p = 0, type = PBM_MONO; | |
5161 | break; | |
5162 | ||
5163 | case '2': | |
5164 | raw_p = 0, type = PBM_GRAY; | |
5165 | break; | |
5166 | ||
5167 | case '3': | |
5168 | raw_p = 0, type = PBM_COLOR; | |
5169 | break; | |
5170 | ||
5171 | case '4': | |
5172 | raw_p = 1, type = PBM_MONO; | |
5173 | break; | |
5174 | ||
5175 | case '5': | |
5176 | raw_p = 1, type = PBM_GRAY; | |
5177 | break; | |
5178 | ||
5179 | case '6': | |
5180 | raw_p = 1, type = PBM_COLOR; | |
5181 | break; | |
5182 | ||
5183 | default: | |
5184 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5185 | goto error; | |
5186 | } | |
5187 | ||
5188 | /* Read width, height, maximum color-component. Characters | |
5189 | starting with `#' up to the end of a line are ignored. */ | |
5190 | width = pbm_scan_number (&p, end); | |
5191 | height = pbm_scan_number (&p, end); | |
5192 | ||
5193 | if (type != PBM_MONO) | |
5194 | { | |
5195 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5196 | if (max_color_idx > 65535 || max_color_idx < 0) |
5197 | { | |
5198 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5199 | goto error; | |
5200 | } | |
4ef0d4d0 KS |
5201 | } |
5202 | ||
b9c89e11 JR |
5203 | if (!check_image_size (f, width, height)) |
5204 | { | |
10ea2b82 | 5205 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5206 | goto error; |
5207 | } | |
4ef0d4d0 KS |
5208 | |
5209 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5210 | &ximg, &img->pixmap)) | |
5211 | goto error; | |
5212 | ||
5213 | /* Initialize the color hash table. */ | |
5214 | init_color_table (); | |
5215 | ||
5216 | if (type == PBM_MONO) | |
5217 | { | |
5218 | int c = 0, g; | |
5219 | struct image_keyword fmt[PBM_LAST]; | |
5220 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5221 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5222 | ||
5223 | /* Parse the image specification. */ | |
72af86bd | 5224 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5225 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5226 | ||
5227 | /* Get foreground and background colors, maybe allocate colors. */ | |
5228 | if (fmt[PBM_FOREGROUND].count | |
5229 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5230 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5231 | if (fmt[PBM_BACKGROUND].count | |
5232 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5233 | { | |
5234 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5235 | img->background = bg; | |
5236 | img->background_valid = 1; | |
5237 | } | |
5238 | ||
5239 | for (y = 0; y < height; ++y) | |
5240 | for (x = 0; x < width; ++x) | |
5241 | { | |
5242 | if (raw_p) | |
5243 | { | |
5244 | if ((x & 7) == 0) | |
c295e710 CY |
5245 | { |
5246 | if (p >= end) | |
5247 | { | |
5248 | x_destroy_x_image (ximg); | |
5249 | x_clear_image (f, img); | |
5250 | image_error ("Invalid image size in image `%s'", | |
5251 | img->spec, Qnil); | |
5252 | goto error; | |
5253 | } | |
5254 | c = *p++; | |
5255 | } | |
4ef0d4d0 KS |
5256 | g = c & 0x80; |
5257 | c <<= 1; | |
5258 | } | |
5259 | else | |
5260 | g = pbm_scan_number (&p, end); | |
5261 | ||
5262 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5263 | } | |
5264 | } | |
5265 | else | |
5266 | { | |
b9c89e11 JR |
5267 | int expected_size = height * width; |
5268 | if (max_color_idx > 255) | |
5269 | expected_size *= 2; | |
5270 | if (type == PBM_COLOR) | |
5271 | expected_size *= 3; | |
5272 | ||
5273 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5274 | { |
5275 | x_destroy_x_image (ximg); | |
fb0b0862 | 5276 | x_clear_image (f, img); |
39e653ea CY |
5277 | image_error ("Invalid image size in image `%s'", |
5278 | img->spec, Qnil); | |
5279 | goto error; | |
5280 | } | |
5281 | ||
4ef0d4d0 KS |
5282 | for (y = 0; y < height; ++y) |
5283 | for (x = 0; x < width; ++x) | |
5284 | { | |
5285 | int r, g, b; | |
5286 | ||
b9c89e11 JR |
5287 | if (type == PBM_GRAY && raw_p) |
5288 | { | |
5289 | r = g = b = *p++; | |
5290 | if (max_color_idx > 255) | |
5291 | r = g = b = r * 256 + *p++; | |
5292 | } | |
5293 | else if (type == PBM_GRAY) | |
5294 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5295 | else if (raw_p) |
5296 | { | |
5297 | r = *p++; | |
b9c89e11 JR |
5298 | if (max_color_idx > 255) |
5299 | r = r * 256 + *p++; | |
4ef0d4d0 | 5300 | g = *p++; |
b9c89e11 JR |
5301 | if (max_color_idx > 255) |
5302 | g = g * 256 + *p++; | |
4ef0d4d0 | 5303 | b = *p++; |
b9c89e11 JR |
5304 | if (max_color_idx > 255) |
5305 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5306 | } |
5307 | else | |
5308 | { | |
5309 | r = pbm_scan_number (&p, end); | |
5310 | g = pbm_scan_number (&p, end); | |
5311 | b = pbm_scan_number (&p, end); | |
5312 | } | |
5313 | ||
5314 | if (r < 0 || g < 0 || b < 0) | |
5315 | { | |
5316 | x_destroy_x_image (ximg); | |
5317 | image_error ("Invalid pixel value in image `%s'", | |
5318 | img->spec, Qnil); | |
5319 | goto error; | |
5320 | } | |
5321 | ||
5322 | /* RGB values are now in the range 0..max_color_idx. | |
5323 | Scale this to the range 0..0xffff supported by X. */ | |
5324 | r = (double) r * 65535 / max_color_idx; | |
5325 | g = (double) g * 65535 / max_color_idx; | |
5326 | b = (double) b * 65535 / max_color_idx; | |
5327 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5328 | } | |
5329 | } | |
5330 | ||
5331 | #ifdef COLOR_TABLE_SUPPORT | |
5332 | /* Store in IMG->colors the colors allocated for the image, and | |
5333 | free the color table. */ | |
5334 | img->colors = colors_in_color_table (&img->ncolors); | |
5335 | free_color_table (); | |
5336 | #endif /* COLOR_TABLE_SUPPORT */ | |
5337 | ||
5338 | img->width = width; | |
5339 | img->height = height; | |
5340 | ||
5341 | /* Maybe fill in the background field while we have ximg handy. */ | |
5342 | ||
5343 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5344 | /* Casting avoids a GCC warning. */ |
5345 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5346 | |
5347 | /* Put the image into a pixmap. */ | |
5348 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5349 | x_destroy_x_image (ximg); | |
5350 | ||
5351 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5352 | img->width = width; |
4ef0d4d0 KS |
5353 | img->height = height; */ |
5354 | ||
4ef0d4d0 KS |
5355 | xfree (contents); |
5356 | return 1; | |
5357 | } | |
5358 | ||
5359 | \f | |
5360 | /*********************************************************************** | |
5361 | PNG | |
5362 | ***********************************************************************/ | |
5363 | ||
9e2a2647 | 5364 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5365 | |
5366 | /* Function prototypes. */ | |
5367 | ||
f57e2426 J |
5368 | static int png_image_p (Lisp_Object object); |
5369 | static int png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5370 | |
5371 | /* The symbol `png' identifying images of this type. */ | |
5372 | ||
955cbe7b | 5373 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5374 | |
5375 | /* Indices of image specification fields in png_format, below. */ | |
5376 | ||
5377 | enum png_keyword_index | |
5378 | { | |
5379 | PNG_TYPE, | |
5380 | PNG_DATA, | |
5381 | PNG_FILE, | |
5382 | PNG_ASCENT, | |
5383 | PNG_MARGIN, | |
5384 | PNG_RELIEF, | |
5385 | PNG_ALGORITHM, | |
5386 | PNG_HEURISTIC_MASK, | |
5387 | PNG_MASK, | |
5388 | PNG_BACKGROUND, | |
5389 | PNG_LAST | |
5390 | }; | |
5391 | ||
5392 | /* Vector of image_keyword structures describing the format | |
5393 | of valid user-defined image specifications. */ | |
5394 | ||
91433552 | 5395 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5396 | { |
5397 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5398 | {":data", IMAGE_STRING_VALUE, 0}, | |
5399 | {":file", IMAGE_STRING_VALUE, 0}, | |
5400 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 5401 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
5402 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
5403 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5404 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5405 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5406 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5407 | }; | |
5408 | ||
5409 | /* Structure describing the image type `png'. */ | |
5410 | ||
5411 | static struct image_type png_type = | |
5412 | { | |
5413 | &Qpng, | |
5414 | png_image_p, | |
5415 | png_load, | |
5416 | x_clear_image, | |
5417 | NULL | |
5418 | }; | |
5419 | ||
5420 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5421 | ||
5422 | static int | |
d3da34e0 | 5423 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5424 | { |
5425 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5426 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5427 | |
5428 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5429 | return 0; | |
5430 | ||
5431 | /* Must specify either the :data or :file keyword. */ | |
5432 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5433 | } | |
5434 | ||
9e2a2647 | 5435 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5436 | |
5437 | ||
5438 | #ifdef HAVE_PNG | |
5439 | ||
4ef0d4d0 KS |
5440 | #ifdef HAVE_NTGUI |
5441 | /* PNG library details. */ | |
5442 | ||
14beddf4 CY |
5443 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5444 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5445 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5446 | png_error_ptr, png_error_ptr)); | |
5447 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5448 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5449 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5450 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5451 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5452 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5453 | png_uint_32 *, png_uint_32 *, |
5454 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5455 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5456 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5457 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5458 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5459 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5460 | int, int, double)); |
14beddf4 CY |
5461 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5462 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5463 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5464 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5465 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5466 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5467 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5468 | |
7f9c5df9 | 5469 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5470 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5471 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5472 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 KS |
5473 | |
5474 | static int | |
0855eb52 | 5475 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
5476 | { |
5477 | HMODULE library; | |
5478 | ||
0855eb52 | 5479 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
5480 | return 0; |
5481 | ||
5482 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5483 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5484 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5485 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5486 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5487 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5488 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5489 | LOAD_IMGLIB_FN (library, png_read_info); | |
5490 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5491 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5492 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5493 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5494 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5495 | LOAD_IMGLIB_FN (library, png_set_background); | |
5496 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5497 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5498 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5499 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5500 | LOAD_IMGLIB_FN (library, png_read_image); | |
5501 | LOAD_IMGLIB_FN (library, png_read_end); | |
5502 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5503 | |
5504 | #if (PNG_LIBPNG_VER >= 10500) | |
5505 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5506 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5507 | #endif /* libpng version >= 1.5 */ | |
5508 | ||
4ef0d4d0 KS |
5509 | return 1; |
5510 | } | |
5511 | #else | |
5512 | ||
5513 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5514 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5515 | #define fn_png_create_read_struct png_create_read_struct |
5516 | #define fn_png_create_info_struct png_create_info_struct | |
5517 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5518 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5519 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5520 | #define fn_png_read_info png_read_info | |
5521 | #define fn_png_get_IHDR png_get_IHDR | |
5522 | #define fn_png_get_valid png_get_valid | |
5523 | #define fn_png_set_strip_16 png_set_strip_16 | |
5524 | #define fn_png_set_expand png_set_expand | |
5525 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5526 | #define fn_png_set_background png_set_background | |
5527 | #define fn_png_get_bKGD png_get_bKGD | |
5528 | #define fn_png_read_update_info png_read_update_info | |
5529 | #define fn_png_get_channels png_get_channels | |
5530 | #define fn_png_get_rowbytes png_get_rowbytes | |
5531 | #define fn_png_read_image png_read_image | |
5532 | #define fn_png_read_end png_read_end | |
5533 | #define fn_png_error png_error | |
5534 | ||
7f9c5df9 CY |
5535 | #if (PNG_LIBPNG_VER >= 10500) |
5536 | #define fn_png_longjmp png_longjmp | |
5537 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5538 | #endif /* libpng version >= 1.5 */ | |
5539 | ||
4ef0d4d0 KS |
5540 | #endif /* HAVE_NTGUI */ |
5541 | ||
7f9c5df9 CY |
5542 | |
5543 | #if (PNG_LIBPNG_VER < 10500) | |
c2e79cb4 | 5544 | #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5545 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5546 | #else | |
df61c790 | 5547 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5548 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5549 | #define PNG_JMPBUF(ptr) \ |
5e617bc2 | 5550 | (*fn_png_set_longjmp_fn ((ptr), longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5551 | #endif |
5552 | ||
4ef0d4d0 KS |
5553 | /* Error and warning handlers installed when the PNG library |
5554 | is initialized. */ | |
5555 | ||
ec6cf4c6 | 5556 | static void my_png_error (png_struct *, const char *) NO_RETURN; |
4ef0d4d0 | 5557 | static void |
d3da34e0 | 5558 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5559 | { |
5560 | xassert (png_ptr != NULL); | |
5be1c984 EZ |
5561 | /* Avoid compiler warning about deprecated direct access to |
5562 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5563 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5564 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5565 | } |
5566 | ||
5567 | ||
5568 | static void | |
d3da34e0 | 5569 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5570 | { |
5571 | xassert (png_ptr != NULL); | |
5572 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
5573 | } | |
5574 | ||
5575 | /* Memory source for PNG decoding. */ | |
5576 | ||
5577 | struct png_memory_storage | |
5578 | { | |
5579 | unsigned char *bytes; /* The data */ | |
3f791afe PE |
5580 | ptrdiff_t len; /* How big is it? */ |
5581 | ptrdiff_t index; /* Where are we? */ | |
4ef0d4d0 KS |
5582 | }; |
5583 | ||
5584 | ||
5585 | /* Function set as reader function when reading PNG image from memory. | |
5586 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5587 | bytes from the input to DATA. */ | |
5588 | ||
5589 | static void | |
d3da34e0 | 5590 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5591 | { |
5592 | struct png_memory_storage *tbr | |
5593 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5594 | ||
5595 | if (length > tbr->len - tbr->index) | |
5596 | fn_png_error (png_ptr, "Read error"); | |
5597 | ||
72af86bd | 5598 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5599 | tbr->index = tbr->index + length; |
5600 | } | |
5601 | ||
b0da69a7 | 5602 | |
9a22a004 JB |
5603 | /* Function set as reader function when reading PNG image from a file. |
5604 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5605 | bytes from the input to DATA. */ | |
5606 | ||
5607 | static void | |
d3da34e0 | 5608 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5609 | { |
5610 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5611 | ||
5612 | if (fread (data, 1, length, fp) < length) | |
5613 | fn_png_error (png_ptr, "Read error"); | |
5614 | } | |
5615 | ||
5616 | ||
4ef0d4d0 KS |
5617 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
5618 | successful. */ | |
5619 | ||
5620 | static int | |
d3da34e0 | 5621 | png_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5622 | { |
5623 | Lisp_Object file, specified_file; | |
5624 | Lisp_Object specified_data; | |
5adf60bc PE |
5625 | int x, y; |
5626 | ptrdiff_t i; | |
4ef0d4d0 | 5627 | XImagePtr ximg, mask_img = NULL; |
4ef0d4d0 KS |
5628 | png_struct *png_ptr = NULL; |
5629 | png_info *info_ptr = NULL, *end_info = NULL; | |
5630 | FILE *volatile fp = NULL; | |
5631 | png_byte sig[8]; | |
5632 | png_byte * volatile pixels = NULL; | |
5633 | png_byte ** volatile rows = NULL; | |
5634 | png_uint_32 width, height; | |
5635 | int bit_depth, color_type, interlace_type; | |
5636 | png_byte channels; | |
5637 | png_uint_32 row_bytes; | |
5638 | int transparent_p; | |
4ef0d4d0 KS |
5639 | struct png_memory_storage tbr; /* Data to be read */ |
5640 | ||
5641 | /* Find out what file to load. */ | |
5642 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5643 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5644 | |
5645 | if (NILP (specified_data)) | |
5646 | { | |
5647 | file = x_find_image_file (specified_file); | |
5648 | if (!STRINGP (file)) | |
5649 | { | |
5650 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5651 | return 0; |
5652 | } | |
5653 | ||
5654 | /* Open the image file. */ | |
42a5b22f | 5655 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5656 | if (!fp) |
5657 | { | |
5658 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5659 | return 0; |
5660 | } | |
5661 | ||
5662 | /* Check PNG signature. */ | |
5663 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5664 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5665 | { |
5666 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5667 | fclose (fp); |
5668 | return 0; | |
5669 | } | |
5670 | } | |
5671 | else | |
5672 | { | |
7574650a AS |
5673 | if (!STRINGP (specified_data)) |
5674 | { | |
5675 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5676 | return 0; | |
5677 | } | |
5678 | ||
4ef0d4d0 KS |
5679 | /* Read from memory. */ |
5680 | tbr.bytes = SDATA (specified_data); | |
5681 | tbr.len = SBYTES (specified_data); | |
5682 | tbr.index = 0; | |
5683 | ||
5684 | /* Check PNG signature. */ | |
5685 | if (tbr.len < sizeof sig | |
285d07e2 | 5686 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5687 | { |
5688 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5689 | return 0; |
5690 | } | |
5691 | ||
5692 | /* Need to skip past the signature. */ | |
5693 | tbr.bytes += sizeof (sig); | |
5694 | } | |
5695 | ||
df61c790 AS |
5696 | /* Initialize read and info structs for PNG lib. */ |
5697 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5698 | NULL, my_png_error, | |
5699 | my_png_warning); | |
4ef0d4d0 KS |
5700 | if (!png_ptr) |
5701 | { | |
5702 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5703 | return 0; |
5704 | } | |
5705 | ||
df61c790 | 5706 | info_ptr = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5707 | if (!info_ptr) |
5708 | { | |
5709 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
5710 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5711 | return 0; |
5712 | } | |
5713 | ||
df61c790 | 5714 | end_info = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5715 | if (!end_info) |
5716 | { | |
5717 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
5718 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5719 | return 0; |
5720 | } | |
5721 | ||
5722 | /* Set error jump-back. We come back here when the PNG library | |
5723 | detects an error. */ | |
7f9c5df9 | 5724 | if (setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5725 | { |
5726 | error: | |
5727 | if (png_ptr) | |
5728 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5729 | xfree (pixels); | |
5730 | xfree (rows); | |
5731 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5732 | return 0; |
5733 | } | |
5734 | ||
5735 | /* Read image info. */ | |
5736 | if (!NILP (specified_data)) | |
5737 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5738 | else | |
9a22a004 | 5739 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5740 | |
5741 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5742 | fn_png_read_info (png_ptr, info_ptr); | |
5743 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5744 | &interlace_type, NULL, NULL); | |
5745 | ||
3f791afe PE |
5746 | if (! (width <= INT_MAX && height <= INT_MAX |
5747 | && check_image_size (f, width, height))) | |
10ea2b82 JR |
5748 | { |
5749 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5750 | goto error; | |
5751 | } | |
ca4aa935 PE |
5752 | |
5753 | /* Create the X image and pixmap now, so that the work below can be | |
5754 | omitted if the image is too large for X. */ | |
5755 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5756 | &img->pixmap)) | |
5757 | goto error; | |
5758 | ||
4ef0d4d0 KS |
5759 | /* If image contains simply transparency data, we prefer to |
5760 | construct a clipping mask. */ | |
5761 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5762 | transparent_p = 1; | |
5763 | else | |
5764 | transparent_p = 0; | |
5765 | ||
5766 | /* This function is easier to write if we only have to handle | |
5767 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5768 | transform other formats into that format. */ | |
5769 | ||
5770 | /* Strip more than 8 bits per channel. */ | |
5771 | if (bit_depth == 16) | |
5772 | fn_png_set_strip_16 (png_ptr); | |
5773 | ||
5774 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5775 | if available. */ | |
5776 | fn_png_set_expand (png_ptr); | |
5777 | ||
5778 | /* Convert grayscale images to RGB. */ | |
5779 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5780 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5781 | fn_png_set_gray_to_rgb (png_ptr); | |
5782 | ||
4ef0d4d0 KS |
5783 | /* Handle alpha channel by combining the image with a background |
5784 | color. Do this only if a real alpha channel is supplied. For | |
5785 | simple transparency, we prefer a clipping mask. */ | |
5786 | if (!transparent_p) | |
5787 | { | |
917ac1a9 | 5788 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5789 | Lisp_Object specified_bg |
5790 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5791 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5792 | |
5793 | if (STRINGP (specified_bg)) | |
5794 | /* The user specified `:background', use that. */ | |
5795 | { | |
4ef0d4d0 | 5796 | XColor color; |
42a5b22f | 5797 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5798 | { |
5799 | png_color_16 user_bg; | |
5800 | ||
72af86bd | 5801 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5802 | user_bg.red = color.red >> shift; |
5803 | user_bg.green = color.green >> shift; | |
5804 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5805 | |
5806 | fn_png_set_background (png_ptr, &user_bg, | |
5807 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5808 | } | |
5809 | } | |
4ef0d4d0 KS |
5810 | else |
5811 | { | |
c4f13f44 CY |
5812 | /* We use the current frame background, ignoring any default |
5813 | background color set by the image. */ | |
8b7d0a16 | 5814 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5815 | XColor color; |
5816 | png_color_16 frame_background; | |
5817 | ||
5818 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5819 | x_query_color (f, &color); | |
5820 | ||
72af86bd | 5821 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5822 | frame_background.red = color.red >> shift; |
5823 | frame_background.green = color.green >> shift; | |
5824 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5825 | #endif /* HAVE_X_WINDOWS */ |
5826 | ||
4ef0d4d0 KS |
5827 | fn_png_set_background (png_ptr, &frame_background, |
5828 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5829 | } | |
5830 | } | |
5831 | ||
5832 | /* Update info structure. */ | |
5833 | fn_png_read_update_info (png_ptr, info_ptr); | |
5834 | ||
5835 | /* Get number of channels. Valid values are 1 for grayscale images | |
5836 | and images with a palette, 2 for grayscale images with transparency | |
5837 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5838 | images with alpha channel, i.e. RGBA. If conversions above were | |
5839 | sufficient we should only have 3 or 4 channels here. */ | |
5840 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
5841 | xassert (channels == 3 || channels == 4); | |
5842 | ||
5843 | /* Number of bytes needed for one row of the image. */ | |
5844 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5845 | ||
5846 | /* Allocate memory for the image. */ | |
3f791afe PE |
5847 | if (min (PTRDIFF_MAX, SIZE_MAX) / sizeof *rows < height |
5848 | || min (PTRDIFF_MAX, SIZE_MAX) / sizeof *pixels / height < row_bytes) | |
5849 | memory_full (SIZE_MAX); | |
5850 | pixels = (png_byte *) xmalloc (sizeof *pixels * row_bytes * height); | |
4ef0d4d0 KS |
5851 | rows = (png_byte **) xmalloc (height * sizeof *rows); |
5852 | for (i = 0; i < height; ++i) | |
5853 | rows[i] = pixels + i * row_bytes; | |
5854 | ||
5855 | /* Read the entire image. */ | |
5856 | fn_png_read_image (png_ptr, rows); | |
5857 | fn_png_read_end (png_ptr, info_ptr); | |
5858 | if (fp) | |
5859 | { | |
5860 | fclose (fp); | |
5861 | fp = NULL; | |
5862 | } | |
5863 | ||
4ef0d4d0 KS |
5864 | /* Create an image and pixmap serving as mask if the PNG image |
5865 | contains an alpha channel. */ | |
5866 | if (channels == 4 | |
5867 | && !transparent_p | |
5868 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5869 | &mask_img, &img->mask)) | |
5870 | { | |
5871 | x_destroy_x_image (ximg); | |
5872 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5873 | img->pixmap = NO_PIXMAP; | |
5874 | goto error; | |
5875 | } | |
5876 | ||
5877 | /* Fill the X image and mask from PNG data. */ | |
5878 | init_color_table (); | |
5879 | ||
5880 | for (y = 0; y < height; ++y) | |
5881 | { | |
5882 | png_byte *p = rows[y]; | |
5883 | ||
5884 | for (x = 0; x < width; ++x) | |
5885 | { | |
13464394 | 5886 | int r, g, b; |
4ef0d4d0 KS |
5887 | |
5888 | r = *p++ << 8; | |
5889 | g = *p++ << 8; | |
5890 | b = *p++ << 8; | |
5891 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5892 | /* An alpha channel, aka mask channel, associates variable | |
5893 | transparency with an image. Where other image formats | |
5894 | support binary transparency---fully transparent or fully | |
5895 | opaque---PNG allows up to 254 levels of partial transparency. | |
5896 | The PNG library implements partial transparency by combining | |
5897 | the image with a specified background color. | |
5898 | ||
5899 | I'm not sure how to handle this here nicely: because the | |
5900 | background on which the image is displayed may change, for | |
5901 | real alpha channel support, it would be necessary to create | |
5902 | a new image for each possible background. | |
5903 | ||
5904 | What I'm doing now is that a mask is created if we have | |
5905 | boolean transparency information. Otherwise I'm using | |
5906 | the frame's background color to combine the image with. */ | |
5907 | ||
5908 | if (channels == 4) | |
5909 | { | |
5910 | if (mask_img) | |
9ecf6403 | 5911 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5912 | ++p; |
5913 | } | |
5914 | } | |
5915 | } | |
5916 | ||
5917 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5918 | /* Set IMG's background color from the PNG image, unless the user | |
5919 | overrode it. */ | |
5920 | { | |
5921 | png_color_16 *bg; | |
5922 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5923 | { | |
5924 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5925 | img->background_valid = 1; | |
5926 | } | |
5927 | } | |
5928 | ||
5929 | #ifdef COLOR_TABLE_SUPPORT | |
5930 | /* Remember colors allocated for this image. */ | |
5931 | img->colors = colors_in_color_table (&img->ncolors); | |
5932 | free_color_table (); | |
5933 | #endif /* COLOR_TABLE_SUPPORT */ | |
5934 | ||
5935 | /* Clean up. */ | |
5936 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5937 | xfree (rows); | |
5938 | xfree (pixels); | |
5939 | ||
5940 | img->width = width; | |
5941 | img->height = height; | |
5942 | ||
2e09fef1 EZ |
5943 | /* Maybe fill in the background field while we have ximg handy. |
5944 | Casting avoids a GCC warning. */ | |
5945 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5946 | |
5947 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5948 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5949 | x_destroy_x_image (ximg); | |
5950 | ||
5951 | /* Same for the mask. */ | |
5952 | if (mask_img) | |
5953 | { | |
2e09fef1 EZ |
5954 | /* Fill in the background_transparent field while we have the |
5955 | mask handy. Casting avoids a GCC warning. */ | |
5956 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5957 | |
5958 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5959 | x_destroy_x_image (mask_img); | |
5960 | } | |
5961 | ||
4ef0d4d0 KS |
5962 | return 1; |
5963 | } | |
5964 | ||
5965 | #else /* HAVE_PNG */ | |
5966 | ||
edfda783 AR |
5967 | #ifdef HAVE_NS |
5968 | static int | |
5969 | png_load (struct frame *f, struct image *img) | |
5970 | { | |
5e617bc2 JB |
5971 | return ns_load_image (f, img, |
5972 | image_spec_value (img->spec, QCfile, NULL), | |
5973 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
5974 | } |
5975 | #endif /* HAVE_NS */ | |
5976 | ||
5977 | ||
4ef0d4d0 KS |
5978 | #endif /* !HAVE_PNG */ |
5979 | ||
5980 | ||
5981 | \f | |
5982 | /*********************************************************************** | |
5983 | JPEG | |
5984 | ***********************************************************************/ | |
5985 | ||
9e2a2647 | 5986 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5987 | |
f57e2426 J |
5988 | static int jpeg_image_p (Lisp_Object object); |
5989 | static int jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5990 | |
5991 | /* The symbol `jpeg' identifying images of this type. */ | |
5992 | ||
955cbe7b | 5993 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
5994 | |
5995 | /* Indices of image specification fields in gs_format, below. */ | |
5996 | ||
5997 | enum jpeg_keyword_index | |
5998 | { | |
5999 | JPEG_TYPE, | |
6000 | JPEG_DATA, | |
6001 | JPEG_FILE, | |
6002 | JPEG_ASCENT, | |
6003 | JPEG_MARGIN, | |
6004 | JPEG_RELIEF, | |
6005 | JPEG_ALGORITHM, | |
6006 | JPEG_HEURISTIC_MASK, | |
6007 | JPEG_MASK, | |
6008 | JPEG_BACKGROUND, | |
6009 | JPEG_LAST | |
6010 | }; | |
6011 | ||
6012 | /* Vector of image_keyword structures describing the format | |
6013 | of valid user-defined image specifications. */ | |
6014 | ||
91433552 | 6015 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
6016 | { |
6017 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6018 | {":data", IMAGE_STRING_VALUE, 0}, | |
6019 | {":file", IMAGE_STRING_VALUE, 0}, | |
6020 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6021 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6022 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6023 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6024 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6025 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6026 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6027 | }; | |
6028 | ||
6029 | /* Structure describing the image type `jpeg'. */ | |
6030 | ||
6031 | static struct image_type jpeg_type = | |
6032 | { | |
6033 | &Qjpeg, | |
6034 | jpeg_image_p, | |
6035 | jpeg_load, | |
6036 | x_clear_image, | |
6037 | NULL | |
6038 | }; | |
6039 | ||
6040 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6041 | ||
6042 | static int | |
d3da34e0 | 6043 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6044 | { |
6045 | struct image_keyword fmt[JPEG_LAST]; | |
6046 | ||
72af86bd | 6047 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
6048 | |
6049 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6050 | return 0; | |
6051 | ||
6052 | /* Must specify either the :data or :file keyword. */ | |
6053 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6054 | } | |
6055 | ||
9e2a2647 | 6056 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6057 | |
6058 | #ifdef HAVE_JPEG | |
6059 | ||
6060 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6061 | jconfig.h. */ | |
6062 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6063 | #undef HAVE_STDLIB_H |
6064 | #endif /* HAVE_STLIB_H */ | |
6065 | ||
66354420 | 6066 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6067 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6068 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6069 | #define __WIN32__ 1 |
6070 | #endif | |
6071 | ||
4ef0d4d0 KS |
6072 | #include <jpeglib.h> |
6073 | #include <jerror.h> | |
4ef0d4d0 KS |
6074 | |
6075 | #ifdef HAVE_STLIB_H_1 | |
6076 | #define HAVE_STDLIB_H 1 | |
6077 | #endif | |
6078 | ||
6079 | #ifdef HAVE_NTGUI | |
6080 | ||
6081 | /* JPEG library details. */ | |
14beddf4 CY |
6082 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6083 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6084 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6085 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6086 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6087 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6088 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6089 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 KS |
6090 | |
6091 | static int | |
0855eb52 | 6092 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6093 | { |
6094 | HMODULE library; | |
6095 | ||
0855eb52 | 6096 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6097 | return 0; |
6098 | ||
6099 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6100 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6101 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6102 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6103 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6104 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6105 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6106 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6107 | return 1; | |
6108 | } | |
6109 | ||
6110 | /* Wrapper since we can't directly assign the function pointer | |
6111 | to another function pointer that was declared more completely easily. */ | |
6112 | static boolean | |
7c3320d8 | 6113 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6114 | { |
6115 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6116 | } | |
6117 | ||
6118 | #else | |
6119 | ||
5e617bc2 | 6120 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress (a) |
4ef0d4d0 KS |
6121 | #define fn_jpeg_start_decompress jpeg_start_decompress |
6122 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6123 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6124 | #define fn_jpeg_read_header jpeg_read_header | |
6125 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6126 | #define fn_jpeg_std_error jpeg_std_error |
6127 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6128 | ||
6129 | #endif /* HAVE_NTGUI */ | |
6130 | ||
6131 | struct my_jpeg_error_mgr | |
6132 | { | |
6133 | struct jpeg_error_mgr pub; | |
6134 | jmp_buf setjmp_buffer; | |
6135 | }; | |
6136 | ||
6137 | ||
ec6cf4c6 | 6138 | static void my_error_exit (j_common_ptr) NO_RETURN; |
4ef0d4d0 | 6139 | static void |
d3da34e0 | 6140 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6141 | { |
6142 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6143 | longjmp (mgr->setjmp_buffer, 1); | |
6144 | } | |
6145 | ||
6146 | ||
6147 | /* Init source method for JPEG data source manager. Called by | |
6148 | jpeg_read_header() before any data is actually read. See | |
6149 | libjpeg.doc from the JPEG lib distribution. */ | |
6150 | ||
6151 | static void | |
d3da34e0 | 6152 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6153 | { |
6154 | } | |
6155 | ||
6156 | ||
6157 | /* Method to terminate data source. Called by | |
6158 | jpeg_finish_decompress() after all data has been processed. */ | |
6159 | ||
6160 | static void | |
d3da34e0 | 6161 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6162 | { |
6163 | } | |
6164 | ||
6165 | ||
6166 | /* Fill input buffer method for JPEG data source manager. Called | |
6167 | whenever more data is needed. We read the whole image in one step, | |
6168 | so this only adds a fake end of input marker at the end. */ | |
6169 | ||
5a1539f3 | 6170 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6171 | |
4ef0d4d0 | 6172 | static boolean |
d3da34e0 | 6173 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6174 | { |
6175 | /* Insert a fake EOI marker. */ | |
6176 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6177 | |
5a1539f3 MB |
6178 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6179 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6180 | |
5a1539f3 | 6181 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6182 | src->bytes_in_buffer = 2; |
e0e30823 | 6183 | return 1; |
4ef0d4d0 KS |
6184 | } |
6185 | ||
6186 | ||
6187 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6188 | is the JPEG data source manager. */ | |
6189 | ||
6190 | static void | |
d3da34e0 | 6191 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6192 | { |
6193 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6194 | ||
6195 | if (src) | |
6196 | { | |
6197 | if (num_bytes > src->bytes_in_buffer) | |
6198 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6199 | ||
6200 | src->bytes_in_buffer -= num_bytes; | |
6201 | src->next_input_byte += num_bytes; | |
6202 | } | |
6203 | } | |
6204 | ||
6205 | ||
4ef0d4d0 KS |
6206 | /* Set up the JPEG lib for reading an image from DATA which contains |
6207 | LEN bytes. CINFO is the decompression info structure created for | |
6208 | reading the image. */ | |
6209 | ||
6210 | static void | |
d3da34e0 | 6211 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len) |
4ef0d4d0 KS |
6212 | { |
6213 | struct jpeg_source_mgr *src; | |
6214 | ||
6215 | if (cinfo->src == NULL) | |
6216 | { | |
6217 | /* First time for this JPEG object? */ | |
6218 | cinfo->src = (struct jpeg_source_mgr *) | |
6219 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6220 | sizeof (struct jpeg_source_mgr)); | |
6221 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6222 | src->next_input_byte = data; | |
6223 | } | |
6224 | ||
6225 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6226 | src->init_source = our_common_init_source; |
6227 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6228 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6229 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6230 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6231 | src->bytes_in_buffer = len; |
6232 | src->next_input_byte = data; | |
6233 | } | |
6234 | ||
6235 | ||
b25a72ab JB |
6236 | struct jpeg_stdio_mgr |
6237 | { | |
6238 | struct jpeg_source_mgr mgr; | |
6239 | boolean finished; | |
6240 | FILE *file; | |
6241 | JOCTET *buffer; | |
6242 | }; | |
6243 | ||
6244 | ||
6245 | /* Size of buffer to read JPEG from file. | |
6246 | Not too big, as we want to use alloc_small. */ | |
6247 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6248 | ||
6249 | ||
6250 | /* Fill input buffer method for JPEG data source manager. Called | |
6251 | whenever more data is needed. The data is read from a FILE *. */ | |
6252 | ||
6253 | static boolean | |
d3da34e0 | 6254 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6255 | { |
6256 | struct jpeg_stdio_mgr *src; | |
6257 | ||
6258 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6259 | if (!src->finished) | |
6260 | { | |
3f791afe | 6261 | ptrdiff_t bytes; |
b25a72ab JB |
6262 | |
6263 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6264 | if (bytes > 0) | |
6265 | src->mgr.bytes_in_buffer = bytes; | |
6266 | else | |
6267 | { | |
6268 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6269 | src->finished = 1; | |
6270 | src->buffer[0] = (JOCTET) 0xFF; | |
6271 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6272 | src->mgr.bytes_in_buffer = 2; | |
6273 | } | |
6274 | src->mgr.next_input_byte = src->buffer; | |
6275 | } | |
6276 | ||
6277 | return 1; | |
6278 | } | |
6279 | ||
6280 | ||
6281 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6282 | is the JPEG data source manager. */ | |
6283 | ||
6284 | static void | |
d3da34e0 | 6285 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6286 | { |
6287 | struct jpeg_stdio_mgr *src; | |
6288 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6289 | ||
6290 | while (num_bytes > 0 && !src->finished) | |
6291 | { | |
6292 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6293 | { | |
6294 | src->mgr.bytes_in_buffer -= num_bytes; | |
6295 | src->mgr.next_input_byte += num_bytes; | |
6296 | break; | |
6297 | } | |
6298 | else | |
6299 | { | |
6300 | num_bytes -= src->mgr.bytes_in_buffer; | |
6301 | src->mgr.bytes_in_buffer = 0; | |
6302 | src->mgr.next_input_byte = NULL; | |
6303 | ||
6304 | our_stdio_fill_input_buffer (cinfo); | |
6305 | } | |
6306 | } | |
6307 | } | |
6308 | ||
6309 | ||
6310 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6311 | CINFO is the decompression info structure created for | |
6312 | reading the image. */ | |
6313 | ||
6314 | static void | |
d3da34e0 | 6315 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6316 | { |
6317 | struct jpeg_stdio_mgr *src; | |
6318 | ||
6319 | if (cinfo->src != NULL) | |
6320 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6321 | else | |
6322 | { | |
6323 | /* First time for this JPEG object? */ | |
6324 | cinfo->src = (struct jpeg_source_mgr *) | |
6325 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6326 | sizeof (struct jpeg_stdio_mgr)); | |
6327 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6328 | src->buffer = (JOCTET *) | |
6329 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6330 | JPEG_STDIO_BUFFER_SIZE); | |
6331 | } | |
6332 | ||
6333 | src->file = fp; | |
6334 | src->finished = 0; | |
6335 | src->mgr.init_source = our_common_init_source; | |
6336 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6337 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6338 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6339 | src->mgr.term_source = our_common_term_source; | |
6340 | src->mgr.bytes_in_buffer = 0; | |
6341 | src->mgr.next_input_byte = NULL; | |
6342 | } | |
6343 | ||
6344 | ||
4ef0d4d0 KS |
6345 | /* Load image IMG for use on frame F. Patterned after example.c |
6346 | from the JPEG lib. */ | |
6347 | ||
6348 | static int | |
d3da34e0 | 6349 | jpeg_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6350 | { |
6351 | struct jpeg_decompress_struct cinfo; | |
6352 | struct my_jpeg_error_mgr mgr; | |
6353 | Lisp_Object file, specified_file; | |
6354 | Lisp_Object specified_data; | |
6355 | FILE * volatile fp = NULL; | |
6356 | JSAMPARRAY buffer; | |
6357 | int row_stride, x, y; | |
6358 | XImagePtr ximg = NULL; | |
6359 | int rc; | |
6360 | unsigned long *colors; | |
6361 | int width, height; | |
4ef0d4d0 KS |
6362 | |
6363 | /* Open the JPEG file. */ | |
6364 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6365 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6366 | |
6367 | if (NILP (specified_data)) | |
6368 | { | |
6369 | file = x_find_image_file (specified_file); | |
6370 | if (!STRINGP (file)) | |
6371 | { | |
6372 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6373 | return 0; |
6374 | } | |
6375 | ||
42a5b22f | 6376 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6377 | if (fp == NULL) |
6378 | { | |
6379 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6380 | return 0; |
6381 | } | |
6382 | } | |
7574650a AS |
6383 | else if (!STRINGP (specified_data)) |
6384 | { | |
6385 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6386 | return 0; | |
6387 | } | |
4ef0d4d0 KS |
6388 | |
6389 | /* Customize libjpeg's error handling to call my_error_exit when an | |
df61c790 AS |
6390 | error is detected. This function will perform a longjmp. */ |
6391 | cinfo.err = fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
6392 | mgr.pub.error_exit = my_error_exit; |
6393 | ||
6394 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
6395 | { | |
6396 | if (rc == 1) | |
6397 | { | |
6398 | /* Called from my_error_exit. Display a JPEG error. */ | |
6ae141d6 PE |
6399 | char buf[JMSG_LENGTH_MAX]; |
6400 | cinfo.err->format_message ((j_common_ptr) &cinfo, buf); | |
4ef0d4d0 | 6401 | image_error ("Error reading JPEG image `%s': %s", img->spec, |
6ae141d6 | 6402 | build_string (buf)); |
4ef0d4d0 KS |
6403 | } |
6404 | ||
6405 | /* Close the input file and destroy the JPEG object. */ | |
6406 | if (fp) | |
6407 | fclose ((FILE *) fp); | |
6408 | fn_jpeg_destroy_decompress (&cinfo); | |
6409 | ||
6410 | /* If we already have an XImage, free that. */ | |
6411 | x_destroy_x_image (ximg); | |
6412 | ||
6413 | /* Free pixmap and colors. */ | |
6414 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6415 | return 0; |
6416 | } | |
6417 | ||
6418 | /* Create the JPEG decompression object. Let it read from fp. | |
6419 | Read the JPEG image header. */ | |
6420 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
6421 | ||
6422 | if (NILP (specified_data)) | |
b25a72ab | 6423 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
6424 | else |
6425 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
6426 | SBYTES (specified_data)); | |
6427 | ||
e0e30823 | 6428 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
6429 | |
6430 | /* Customize decompression so that color quantization will be used. | |
6431 | Start decompression. */ | |
e0e30823 | 6432 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
6433 | fn_jpeg_start_decompress (&cinfo); |
6434 | width = img->width = cinfo.output_width; | |
6435 | height = img->height = cinfo.output_height; | |
6436 | ||
f1f25b99 CY |
6437 | if (!check_image_size (f, width, height)) |
6438 | { | |
10ea2b82 | 6439 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
6440 | longjmp (mgr.setjmp_buffer, 2); |
6441 | } | |
6442 | ||
4ef0d4d0 KS |
6443 | /* Create X image and pixmap. */ |
6444 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6445 | longjmp (mgr.setjmp_buffer, 2); | |
6446 | ||
6447 | /* Allocate colors. When color quantization is used, | |
6448 | cinfo.actual_number_of_colors has been set with the number of | |
6449 | colors generated, and cinfo.colormap is a two-dimensional array | |
6450 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
6451 | No more than 255 colors will be generated. */ | |
6452 | { | |
6453 | int i, ir, ig, ib; | |
6454 | ||
6455 | if (cinfo.out_color_components > 2) | |
6456 | ir = 0, ig = 1, ib = 2; | |
6457 | else if (cinfo.out_color_components > 1) | |
6458 | ir = 0, ig = 1, ib = 0; | |
6459 | else | |
6460 | ir = 0, ig = 0, ib = 0; | |
6461 | ||
6462 | /* Use the color table mechanism because it handles colors that | |
6463 | cannot be allocated nicely. Such colors will be replaced with | |
6464 | a default color, and we don't have to care about which colors | |
6465 | can be freed safely, and which can't. */ | |
6466 | init_color_table (); | |
6467 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
6468 | * sizeof *colors); | |
6469 | ||
6470 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
6471 | { | |
6472 | /* Multiply RGB values with 255 because X expects RGB values | |
6473 | in the range 0..0xffff. */ | |
6474 | int r = cinfo.colormap[ir][i] << 8; | |
6475 | int g = cinfo.colormap[ig][i] << 8; | |
6476 | int b = cinfo.colormap[ib][i] << 8; | |
6477 | colors[i] = lookup_rgb_color (f, r, g, b); | |
6478 | } | |
6479 | ||
6480 | #ifdef COLOR_TABLE_SUPPORT | |
6481 | /* Remember those colors actually allocated. */ | |
6482 | img->colors = colors_in_color_table (&img->ncolors); | |
6483 | free_color_table (); | |
6484 | #endif /* COLOR_TABLE_SUPPORT */ | |
6485 | } | |
6486 | ||
6487 | /* Read pixels. */ | |
6488 | row_stride = width * cinfo.output_components; | |
6489 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
6490 | row_stride, 1); | |
6491 | for (y = 0; y < height; ++y) | |
6492 | { | |
6493 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
6494 | for (x = 0; x < cinfo.output_width; ++x) | |
6495 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
6496 | } | |
6497 | ||
6498 | /* Clean up. */ | |
6499 | fn_jpeg_finish_decompress (&cinfo); | |
6500 | fn_jpeg_destroy_decompress (&cinfo); | |
6501 | if (fp) | |
6502 | fclose ((FILE *) fp); | |
6503 | ||
6504 | /* Maybe fill in the background field while we have ximg handy. */ | |
6505 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6506 | /* Casting avoids a GCC warning. */ |
6507 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6508 | |
6509 | /* Put the image into the pixmap. */ | |
6510 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6511 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6512 | return 1; |
6513 | } | |
6514 | ||
6515 | #else /* HAVE_JPEG */ | |
6516 | ||
edfda783 AR |
6517 | #ifdef HAVE_NS |
6518 | static int | |
6519 | jpeg_load (struct frame *f, struct image *img) | |
6520 | { | |
ed3751c8 JB |
6521 | return ns_load_image (f, img, |
6522 | image_spec_value (img->spec, QCfile, NULL), | |
6523 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6524 | } |
6525 | #endif /* HAVE_NS */ | |
6526 | ||
4ef0d4d0 KS |
6527 | #endif /* !HAVE_JPEG */ |
6528 | ||
6529 | ||
6530 | \f | |
6531 | /*********************************************************************** | |
6532 | TIFF | |
6533 | ***********************************************************************/ | |
6534 | ||
9e2a2647 | 6535 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6536 | |
f57e2426 J |
6537 | static int tiff_image_p (Lisp_Object object); |
6538 | static int tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6539 | |
6540 | /* The symbol `tiff' identifying images of this type. */ | |
6541 | ||
955cbe7b | 6542 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6543 | |
6544 | /* Indices of image specification fields in tiff_format, below. */ | |
6545 | ||
6546 | enum tiff_keyword_index | |
6547 | { | |
6548 | TIFF_TYPE, | |
6549 | TIFF_DATA, | |
6550 | TIFF_FILE, | |
6551 | TIFF_ASCENT, | |
6552 | TIFF_MARGIN, | |
6553 | TIFF_RELIEF, | |
6554 | TIFF_ALGORITHM, | |
6555 | TIFF_HEURISTIC_MASK, | |
6556 | TIFF_MASK, | |
6557 | TIFF_BACKGROUND, | |
58279503 | 6558 | TIFF_INDEX, |
4ef0d4d0 KS |
6559 | TIFF_LAST |
6560 | }; | |
6561 | ||
6562 | /* Vector of image_keyword structures describing the format | |
6563 | of valid user-defined image specifications. */ | |
6564 | ||
91433552 | 6565 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6566 | { |
6567 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6568 | {":data", IMAGE_STRING_VALUE, 0}, | |
6569 | {":file", IMAGE_STRING_VALUE, 0}, | |
6570 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 6571 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
6572 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
6573 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6574 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6575 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6576 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6577 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6578 | }; |
6579 | ||
6580 | /* Structure describing the image type `tiff'. */ | |
6581 | ||
6582 | static struct image_type tiff_type = | |
6583 | { | |
6584 | &Qtiff, | |
6585 | tiff_image_p, | |
6586 | tiff_load, | |
6587 | x_clear_image, | |
6588 | NULL | |
6589 | }; | |
6590 | ||
6591 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
6592 | ||
6593 | static int | |
d3da34e0 | 6594 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6595 | { |
6596 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6597 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6598 | |
6599 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6600 | return 0; | |
6601 | ||
6602 | /* Must specify either the :data or :file keyword. */ | |
6603 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6604 | } | |
6605 | ||
9e2a2647 | 6606 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6607 | |
6608 | #ifdef HAVE_TIFF | |
6609 | ||
6610 | #include <tiffio.h> | |
6611 | ||
6612 | #ifdef HAVE_NTGUI | |
6613 | ||
6614 | /* TIFF library details. */ | |
14beddf4 CY |
6615 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6616 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6617 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6618 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6619 | TIFFReadWriteProc, TIFFReadWriteProc, |
6620 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6621 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6622 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6623 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6624 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6625 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 KS |
6626 | |
6627 | static int | |
0855eb52 | 6628 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6629 | { |
6630 | HMODULE library; | |
6631 | ||
0855eb52 | 6632 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
6633 | return 0; |
6634 | ||
6635 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6636 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6637 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6638 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6639 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6640 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6641 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6642 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6643 | return 1; |
6644 | } | |
6645 | ||
6646 | #else | |
6647 | ||
6648 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6649 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6650 | #define fn_TIFFOpen TIFFOpen | |
6651 | #define fn_TIFFClientOpen TIFFClientOpen | |
6652 | #define fn_TIFFGetField TIFFGetField | |
6653 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6654 | #define fn_TIFFClose TIFFClose | |
58279503 | 6655 | #define fn_TIFFSetDirectory TIFFSetDirectory |
4ef0d4d0 KS |
6656 | #endif /* HAVE_NTGUI */ |
6657 | ||
6658 | ||
6659 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6660 | memory source, but we have to provide a lot of extra functions. | |
6661 | Blah. | |
6662 | ||
6663 | We really only need to implement read and seek, but I am not | |
6664 | convinced that the TIFF library is smart enough not to destroy | |
6665 | itself if we only hand it the function pointers we need to | |
6666 | override. */ | |
6667 | ||
6668 | typedef struct | |
6669 | { | |
6670 | unsigned char *bytes; | |
3f791afe PE |
6671 | ptrdiff_t len; |
6672 | ptrdiff_t index; | |
4ef0d4d0 KS |
6673 | } |
6674 | tiff_memory_source; | |
6675 | ||
3f791afe | 6676 | static tsize_t |
d3da34e0 | 6677 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6678 | { |
6679 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6680 | ||
3f791afe | 6681 | size = min (size, src->len - src->index); |
72af86bd | 6682 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6683 | src->index += size; |
6684 | return size; | |
6685 | } | |
6686 | ||
3f791afe | 6687 | static tsize_t |
d3da34e0 | 6688 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 | 6689 | { |
3f791afe | 6690 | return -1; |
4ef0d4d0 KS |
6691 | } |
6692 | ||
6693 | static toff_t | |
d3da34e0 | 6694 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6695 | { |
6696 | tiff_memory_source *src = (tiff_memory_source *) data; | |
3f791afe | 6697 | ptrdiff_t idx; |
4ef0d4d0 KS |
6698 | |
6699 | switch (whence) | |
6700 | { | |
6701 | case SEEK_SET: /* Go from beginning of source. */ | |
6702 | idx = off; | |
6703 | break; | |
6704 | ||
6705 | case SEEK_END: /* Go from end of source. */ | |
6706 | idx = src->len + off; | |
6707 | break; | |
6708 | ||
6709 | case SEEK_CUR: /* Go from current position. */ | |
6710 | idx = src->index + off; | |
6711 | break; | |
6712 | ||
6713 | default: /* Invalid `whence'. */ | |
6714 | return -1; | |
6715 | } | |
6716 | ||
6717 | if (idx > src->len || idx < 0) | |
6718 | return -1; | |
6719 | ||
6720 | src->index = idx; | |
6721 | return src->index; | |
6722 | } | |
6723 | ||
6724 | static int | |
d3da34e0 | 6725 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6726 | { |
6727 | /* NOOP */ | |
6728 | return 0; | |
6729 | } | |
6730 | ||
6731 | static int | |
d3da34e0 | 6732 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6733 | { |
6734 | /* It is already _IN_ memory. */ | |
6735 | return 0; | |
6736 | } | |
6737 | ||
6738 | static void | |
d3da34e0 | 6739 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6740 | { |
6741 | /* We don't need to do this. */ | |
6742 | } | |
6743 | ||
6744 | static toff_t | |
d3da34e0 | 6745 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6746 | { |
6747 | return ((tiff_memory_source *) data)->len; | |
6748 | } | |
6749 | ||
b41c3a35 EZ |
6750 | /* GCC 3.x on x86 Windows targets has a bug that triggers an internal |
6751 | compiler error compiling tiff_handler, see Bugzilla bug #17406 | |
6752 | (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17406). Declaring | |
6753 | this function as external works around that problem. */ | |
6754 | #if defined (__MINGW32__) && __GNUC__ == 3 | |
6755 | # define MINGW_STATIC | |
6756 | #else | |
6757 | # define MINGW_STATIC static | |
6758 | #endif | |
4ef0d4d0 | 6759 | |
b41c3a35 EZ |
6760 | MINGW_STATIC void |
6761 | tiff_handler (const char *, const char *, const char *, va_list) | |
13464394 | 6762 | ATTRIBUTE_FORMAT_PRINTF (3, 0); |
b41c3a35 | 6763 | MINGW_STATIC void |
13464394 PE |
6764 | tiff_handler (const char *log_format, const char *title, |
6765 | const char *format, va_list ap) | |
6766 | { | |
6767 | /* doprnt is not suitable here, as TIFF handlers are called from | |
6768 | libtiff and are passed arbitrary printf directives. Instead, use | |
6769 | vsnprintf, taking care to be portable to nonstandard environments | |
6770 | where vsnprintf returns -1 on buffer overflow. Since it's just a | |
6771 | log entry, it's OK to truncate it. */ | |
6772 | char buf[4000]; | |
6773 | int len = vsnprintf (buf, sizeof buf, format, ap); | |
6774 | add_to_log (log_format, build_string (title), | |
6775 | make_string (buf, max (0, min (len, sizeof buf - 1)))); | |
6776 | } | |
b41c3a35 | 6777 | #undef MINGW_STATIC |
13464394 | 6778 | |
5e2d4a30 PE |
6779 | static void tiff_error_handler (const char *, const char *, va_list) |
6780 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6781 | static void |
d3da34e0 | 6782 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6783 | { |
13464394 | 6784 | tiff_handler ("TIFF error: %s %s", title, format, ap); |
4ef0d4d0 KS |
6785 | } |
6786 | ||
6787 | ||
5e2d4a30 PE |
6788 | static void tiff_warning_handler (const char *, const char *, va_list) |
6789 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6790 | static void |
d3da34e0 | 6791 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 | 6792 | { |
13464394 | 6793 | tiff_handler ("TIFF warning: %s %s", title, format, ap); |
4ef0d4d0 KS |
6794 | } |
6795 | ||
6796 | ||
6797 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
6798 | successful. */ | |
6799 | ||
6800 | static int | |
d3da34e0 | 6801 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6802 | { |
6803 | Lisp_Object file, specified_file; | |
6804 | Lisp_Object specified_data; | |
6805 | TIFF *tiff; | |
58279503 | 6806 | int width, height, x, y, count; |
4ef0d4d0 | 6807 | uint32 *buf; |
03d0a109 | 6808 | int rc; |
4ef0d4d0 | 6809 | XImagePtr ximg; |
4ef0d4d0 | 6810 | tiff_memory_source memsrc; |
58279503 | 6811 | Lisp_Object image; |
4ef0d4d0 KS |
6812 | |
6813 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6814 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6815 | |
5e2d4a30 PE |
6816 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6817 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6818 | |
6819 | if (NILP (specified_data)) | |
6820 | { | |
6821 | /* Read from a file */ | |
6822 | file = x_find_image_file (specified_file); | |
6823 | if (!STRINGP (file)) | |
6824 | { | |
6825 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6826 | return 0; |
6827 | } | |
6828 | ||
df61c790 | 6829 | /* Try to open the image file. */ |
b19beacc | 6830 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6831 | if (tiff == NULL) |
6832 | { | |
6833 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6834 | return 0; |
6835 | } | |
6836 | } | |
6837 | else | |
6838 | { | |
7574650a AS |
6839 | if (!STRINGP (specified_data)) |
6840 | { | |
6841 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6842 | return 0; | |
6843 | } | |
6844 | ||
4ef0d4d0 KS |
6845 | /* Memory source! */ |
6846 | memsrc.bytes = SDATA (specified_data); | |
6847 | memsrc.len = SBYTES (specified_data); | |
6848 | memsrc.index = 0; | |
6849 | ||
3082f617 | 6850 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
3f791afe PE |
6851 | tiff_read_from_memory, |
6852 | tiff_write_from_memory, | |
df61c790 AS |
6853 | tiff_seek_in_memory, |
6854 | tiff_close_memory, | |
6855 | tiff_size_of_memory, | |
6856 | tiff_mmap_memory, | |
6857 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6858 | |
6859 | if (!tiff) | |
6860 | { | |
6861 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6862 | return 0; |
6863 | } | |
6864 | } | |
6865 | ||
58279503 JR |
6866 | image = image_spec_value (img->spec, QCindex, NULL); |
6867 | if (INTEGERP (image)) | |
6868 | { | |
13464394 PE |
6869 | EMACS_INT ino = XFASTINT (image); |
6870 | if (! (TYPE_MINIMUM (tdir_t) <= ino && ino <= TYPE_MAXIMUM (tdir_t) | |
6871 | && fn_TIFFSetDirectory (tiff, ino))) | |
58279503 JR |
6872 | { |
6873 | image_error ("Invalid image number `%s' in image `%s'", | |
6874 | image, img->spec); | |
6875 | fn_TIFFClose (tiff); | |
58279503 JR |
6876 | return 0; |
6877 | } | |
6878 | } | |
6879 | ||
4ef0d4d0 KS |
6880 | /* Get width and height of the image, and allocate a raster buffer |
6881 | of width x height 32-bit values. */ | |
6882 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6883 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6884 | |
6885 | if (!check_image_size (f, width, height)) | |
6886 | { | |
10ea2b82 | 6887 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6888 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6889 | return 0; |
6890 | } | |
6891 | ||
ca4aa935 PE |
6892 | /* Create the X image and pixmap. */ |
6893 | if (! (height <= min (PTRDIFF_MAX, SIZE_MAX) / sizeof *buf / width | |
6894 | && x_create_x_image_and_pixmap (f, width, height, 0, | |
6895 | &ximg, &img->pixmap))) | |
6896 | { | |
6897 | fn_TIFFClose (tiff); | |
6898 | return 0; | |
6899 | } | |
6900 | ||
3f791afe | 6901 | buf = (uint32 *) xmalloc (sizeof *buf * width * height); |
4ef0d4d0 KS |
6902 | |
6903 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6904 | |
6905 | /* Count the number of images in the file. */ | |
03d0a109 PE |
6906 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
6907 | continue; | |
58279503 JR |
6908 | |
6909 | if (count > 1) | |
b50691aa CY |
6910 | img->lisp_data = Fcons (Qcount, |
6911 | Fcons (make_number (count), | |
6912 | img->lisp_data)); | |
58279503 | 6913 | |
4ef0d4d0 KS |
6914 | fn_TIFFClose (tiff); |
6915 | if (!rc) | |
6916 | { | |
6917 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6918 | xfree (buf); | |
4ef0d4d0 KS |
6919 | return 0; |
6920 | } | |
6921 | ||
4ef0d4d0 KS |
6922 | /* Initialize the color table. */ |
6923 | init_color_table (); | |
6924 | ||
6925 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6926 | for (y = 0; y < height; ++y) | |
6927 | { | |
6928 | uint32 *row = buf + y * width; | |
6929 | ||
6930 | for (x = 0; x < width; ++x) | |
6931 | { | |
6932 | uint32 abgr = row[x]; | |
6933 | int r = TIFFGetR (abgr) << 8; | |
6934 | int g = TIFFGetG (abgr) << 8; | |
6935 | int b = TIFFGetB (abgr) << 8; | |
6936 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6937 | } | |
6938 | } | |
6939 | ||
6940 | #ifdef COLOR_TABLE_SUPPORT | |
6941 | /* Remember the colors allocated for the image. Free the color table. */ | |
6942 | img->colors = colors_in_color_table (&img->ncolors); | |
6943 | free_color_table (); | |
6944 | #endif /* COLOR_TABLE_SUPPORT */ | |
6945 | ||
6946 | img->width = width; | |
6947 | img->height = height; | |
6948 | ||
6949 | /* Maybe fill in the background field while we have ximg handy. */ | |
6950 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6951 | /* Casting avoids a GCC warning on W32. */ |
6952 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6953 | |
6954 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6955 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6956 | x_destroy_x_image (ximg); | |
6957 | xfree (buf); | |
6958 | ||
4ef0d4d0 KS |
6959 | return 1; |
6960 | } | |
6961 | ||
6962 | #else /* HAVE_TIFF */ | |
6963 | ||
edfda783 AR |
6964 | #ifdef HAVE_NS |
6965 | static int | |
6966 | tiff_load (struct frame *f, struct image *img) | |
6967 | { | |
ed3751c8 JB |
6968 | return ns_load_image (f, img, |
6969 | image_spec_value (img->spec, QCfile, NULL), | |
6970 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6971 | } |
6972 | #endif /* HAVE_NS */ | |
6973 | ||
4ef0d4d0 KS |
6974 | #endif /* !HAVE_TIFF */ |
6975 | ||
6976 | ||
6977 | \f | |
6978 | /*********************************************************************** | |
6979 | GIF | |
6980 | ***********************************************************************/ | |
6981 | ||
9e2a2647 | 6982 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 6983 | |
f57e2426 J |
6984 | static int gif_image_p (Lisp_Object object); |
6985 | static int gif_load (struct frame *f, struct image *img); | |
6986 | static void gif_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6987 | |
6988 | /* The symbol `gif' identifying images of this type. */ | |
6989 | ||
955cbe7b | 6990 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
6991 | |
6992 | /* Indices of image specification fields in gif_format, below. */ | |
6993 | ||
6994 | enum gif_keyword_index | |
6995 | { | |
6996 | GIF_TYPE, | |
6997 | GIF_DATA, | |
6998 | GIF_FILE, | |
6999 | GIF_ASCENT, | |
7000 | GIF_MARGIN, | |
7001 | GIF_RELIEF, | |
7002 | GIF_ALGORITHM, | |
7003 | GIF_HEURISTIC_MASK, | |
7004 | GIF_MASK, | |
7005 | GIF_IMAGE, | |
7006 | GIF_BACKGROUND, | |
7007 | GIF_LAST | |
7008 | }; | |
7009 | ||
7010 | /* Vector of image_keyword structures describing the format | |
7011 | of valid user-defined image specifications. */ | |
7012 | ||
91433552 | 7013 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
7014 | { |
7015 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7016 | {":data", IMAGE_STRING_VALUE, 0}, | |
7017 | {":file", IMAGE_STRING_VALUE, 0}, | |
7018 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7019 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
7020 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7021 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7022 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7023 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 7024 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
7025 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
7026 | }; | |
7027 | ||
7028 | /* Structure describing the image type `gif'. */ | |
7029 | ||
7030 | static struct image_type gif_type = | |
7031 | { | |
7032 | &Qgif, | |
7033 | gif_image_p, | |
7034 | gif_load, | |
6ac3c7bb | 7035 | gif_clear_image, |
4ef0d4d0 KS |
7036 | NULL |
7037 | }; | |
7038 | ||
6ac3c7bb KS |
7039 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7040 | ||
7041 | static void | |
d3da34e0 | 7042 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 7043 | { |
b50691aa | 7044 | img->lisp_data = Qnil; |
6ac3c7bb KS |
7045 | x_clear_image (f, img); |
7046 | } | |
7047 | ||
4ef0d4d0 KS |
7048 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
7049 | ||
7050 | static int | |
d3da34e0 | 7051 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
7052 | { |
7053 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 7054 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7055 | |
7056 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7057 | return 0; | |
7058 | ||
7059 | /* Must specify either the :data or :file keyword. */ | |
7060 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7061 | } | |
7062 | ||
9e2a2647 | 7063 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7064 | |
7065 | #ifdef HAVE_GIF | |
7066 | ||
9e2a2647 | 7067 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
7068 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7069 | Undefine before redefining to avoid a preprocessor warning. */ | |
7070 | #ifdef DrawText | |
7071 | #undef DrawText | |
7072 | #endif | |
4ef0d4d0 KS |
7073 | /* avoid conflict with QuickdrawText.h */ |
7074 | #define DrawText gif_DrawText | |
7075 | #include <gif_lib.h> | |
7076 | #undef DrawText | |
7077 | ||
9e2a2647 | 7078 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7079 | |
7080 | #include <gif_lib.h> | |
7081 | ||
9e2a2647 | 7082 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7083 | |
7084 | ||
7085 | #ifdef HAVE_NTGUI | |
7086 | ||
7087 | /* GIF library details. */ | |
14beddf4 CY |
7088 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7089 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7090 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7091 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 KS |
7092 | |
7093 | static int | |
0855eb52 | 7094 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7095 | { |
7096 | HMODULE library; | |
7097 | ||
0855eb52 | 7098 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7099 | return 0; |
7100 | ||
7101 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7102 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7103 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7104 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7105 | return 1; | |
7106 | } | |
7107 | ||
7108 | #else | |
7109 | ||
7110 | #define fn_DGifCloseFile DGifCloseFile | |
7111 | #define fn_DGifSlurp DGifSlurp | |
7112 | #define fn_DGifOpen DGifOpen | |
7113 | #define fn_DGifOpenFileName DGifOpenFileName | |
7114 | ||
7115 | #endif /* HAVE_NTGUI */ | |
7116 | ||
7117 | /* Reading a GIF image from memory | |
7118 | Based on the PNG memory stuff to a certain extent. */ | |
7119 | ||
7120 | typedef struct | |
7121 | { | |
7122 | unsigned char *bytes; | |
3f791afe PE |
7123 | ptrdiff_t len; |
7124 | ptrdiff_t index; | |
4ef0d4d0 KS |
7125 | } |
7126 | gif_memory_source; | |
7127 | ||
7128 | /* Make the current memory source available to gif_read_from_memory. | |
7129 | It's done this way because not all versions of libungif support | |
7130 | a UserData field in the GifFileType structure. */ | |
7131 | static gif_memory_source *current_gif_memory_src; | |
7132 | ||
7133 | static int | |
d3da34e0 | 7134 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7135 | { |
7136 | gif_memory_source *src = current_gif_memory_src; | |
7137 | ||
7138 | if (len > src->len - src->index) | |
7139 | return -1; | |
7140 | ||
72af86bd | 7141 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7142 | src->index += len; |
7143 | return len; | |
7144 | } | |
7145 | ||
7146 | ||
7147 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7148 | successful. */ | |
7149 | ||
91433552 DN |
7150 | static const int interlace_start[] = {0, 4, 2, 1}; |
7151 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7152 | |
17c0c952 JD |
7153 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7154 | ||
4ef0d4d0 | 7155 | static int |
d3da34e0 | 7156 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 | 7157 | { |
60002bf5 CY |
7158 | Lisp_Object file; |
7159 | int rc, width, height, x, y, i, j; | |
4ef0d4d0 KS |
7160 | XImagePtr ximg; |
7161 | ColorMapObject *gif_color_map; | |
7162 | unsigned long pixel_colors[256]; | |
7163 | GifFileType *gif; | |
4ef0d4d0 | 7164 | gif_memory_source memsrc; |
60002bf5 CY |
7165 | Lisp_Object specified_bg = image_spec_value (img->spec, QCbackground, NULL); |
7166 | Lisp_Object specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7167 | Lisp_Object specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7168 | unsigned long bgcolor = 0; | |
13464394 | 7169 | EMACS_INT idx; |
4ef0d4d0 KS |
7170 | |
7171 | if (NILP (specified_data)) | |
7172 | { | |
7173 | file = x_find_image_file (specified_file); | |
7174 | if (!STRINGP (file)) | |
7175 | { | |
7176 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7177 | return 0; |
7178 | } | |
7179 | ||
df61c790 | 7180 | /* Open the GIF file. */ |
2037898d | 7181 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7182 | if (gif == NULL) |
7183 | { | |
7184 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7185 | return 0; |
7186 | } | |
7187 | } | |
7188 | else | |
7189 | { | |
7574650a AS |
7190 | if (!STRINGP (specified_data)) |
7191 | { | |
7192 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7193 | return 0; | |
7194 | } | |
7195 | ||
4ef0d4d0 KS |
7196 | /* Read from memory! */ |
7197 | current_gif_memory_src = &memsrc; | |
7198 | memsrc.bytes = SDATA (specified_data); | |
7199 | memsrc.len = SBYTES (specified_data); | |
7200 | memsrc.index = 0; | |
7201 | ||
df61c790 | 7202 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7203 | if (!gif) |
7204 | { | |
7205 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7206 | return 0; |
7207 | } | |
7208 | } | |
7209 | ||
f1f25b99 CY |
7210 | /* Before reading entire contents, check the declared image size. */ |
7211 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7212 | { | |
10ea2b82 | 7213 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7214 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7215 | return 0; |
7216 | } | |
7217 | ||
4ef0d4d0 KS |
7218 | /* Read entire contents. */ |
7219 | rc = fn_DGifSlurp (gif); | |
60002bf5 | 7220 | if (rc == GIF_ERROR || gif->ImageCount <= 0) |
4ef0d4d0 KS |
7221 | { |
7222 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7223 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7224 | return 0; |
7225 | } | |
7226 | ||
60002bf5 CY |
7227 | /* Which sub-image are we to display? */ |
7228 | { | |
33290528 PE |
7229 | Lisp_Object image_number = image_spec_value (img->spec, QCindex, NULL); |
7230 | idx = INTEGERP (image_number) ? XFASTINT (image_number) : 0; | |
60002bf5 | 7231 | if (idx < 0 || idx >= gif->ImageCount) |
17c0c952 | 7232 | { |
60002bf5 | 7233 | image_error ("Invalid image number `%s' in image `%s'", |
33290528 | 7234 | image_number, img->spec); |
60002bf5 CY |
7235 | fn_DGifCloseFile (gif); |
7236 | return 0; | |
17c0c952 | 7237 | } |
60002bf5 | 7238 | } |
17c0c952 | 7239 | |
e013fb34 CY |
7240 | width = img->width = gif->SWidth; |
7241 | height = img->height = gif->SHeight; | |
0f4aca46 | 7242 | |
e013fb34 CY |
7243 | img->corners[TOP_CORNER] = gif->SavedImages[0].ImageDesc.Top; |
7244 | img->corners[LEFT_CORNER] = gif->SavedImages[0].ImageDesc.Left; | |
8d903f4e AS |
7245 | img->corners[BOT_CORNER] |
7246 | = img->corners[TOP_CORNER] + gif->SavedImages[0].ImageDesc.Height; | |
7247 | img->corners[RIGHT_CORNER] | |
7248 | = img->corners[LEFT_CORNER] + gif->SavedImages[0].ImageDesc.Width; | |
4ef0d4d0 | 7249 | |
f1f25b99 CY |
7250 | if (!check_image_size (f, width, height)) |
7251 | { | |
10ea2b82 | 7252 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7253 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7254 | return 0; |
7255 | } | |
7256 | ||
4ef0d4d0 KS |
7257 | /* Create the X image and pixmap. */ |
7258 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7259 | { | |
7260 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7261 | return 0; |
7262 | } | |
7263 | ||
60002bf5 CY |
7264 | /* Clear the part of the screen image not covered by the image. |
7265 | Full animated GIF support requires more here (see the gif89 spec, | |
7266 | disposal methods). Let's simply assume that the part not covered | |
7267 | by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7268 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7269 | for (x = 0; x < width; ++x) |
7270 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7271 | ||
6ac3c7bb | 7272 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7273 | for (x = 0; x < width; ++x) |
7274 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7275 | ||
6ac3c7bb | 7276 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7277 | { |
6ac3c7bb | 7278 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7279 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7280 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7281 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7282 | } | |
7283 | ||
60002bf5 | 7284 | /* Read the GIF image into the X image. */ |
4ef0d4d0 | 7285 | |
60002bf5 CY |
7286 | /* FIXME: With the current implementation, loading an animated gif |
7287 | is quadratic in the number of animation frames, since each frame | |
7288 | is a separate struct image. We must provide a way for a single | |
7289 | gif_load call to construct and save all animation frames. */ | |
4ef0d4d0 | 7290 | |
60002bf5 CY |
7291 | init_color_table (); |
7292 | if (STRINGP (specified_bg)) | |
7293 | bgcolor = x_alloc_image_color (f, img, specified_bg, | |
7294 | FRAME_BACKGROUND_PIXEL (f)); | |
7295 | for (j = 0; j <= idx; ++j) | |
7296 | { | |
7297 | /* We use a local variable `raster' here because RasterBits is a | |
7298 | char *, which invites problems with bytes >= 0x80. */ | |
7299 | struct SavedImage *subimage = gif->SavedImages + j; | |
7300 | unsigned char *raster = (unsigned char *) subimage->RasterBits; | |
7301 | int transparency_color_index = -1; | |
7302 | int disposal = 0; | |
e013fb34 CY |
7303 | int subimg_width = subimage->ImageDesc.Width; |
7304 | int subimg_height = subimage->ImageDesc.Height; | |
7305 | int subimg_top = subimage->ImageDesc.Top; | |
7306 | int subimg_left = subimage->ImageDesc.Left; | |
60002bf5 CY |
7307 | |
7308 | /* Find the Graphic Control Extension block for this sub-image. | |
7309 | Extract the disposal method and transparency color. */ | |
7310 | for (i = 0; i < subimage->ExtensionBlockCount; i++) | |
4ef0d4d0 | 7311 | { |
60002bf5 | 7312 | ExtensionBlock *extblock = subimage->ExtensionBlocks + i; |
4ef0d4d0 | 7313 | |
60002bf5 CY |
7314 | if ((extblock->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION) |
7315 | && extblock->ByteCount == 4 | |
7316 | && extblock->Bytes[0] & 1) | |
4ef0d4d0 | 7317 | { |
60002bf5 CY |
7318 | /* From gif89a spec: 1 = "keep in place", 2 = "restore |
7319 | to background". Treat any other value like 2. */ | |
7320 | disposal = (extblock->Bytes[0] >> 2) & 7; | |
2547adb1 | 7321 | transparency_color_index = (unsigned char) extblock->Bytes[3]; |
60002bf5 | 7322 | break; |
4ef0d4d0 | 7323 | } |
4ef0d4d0 | 7324 | } |
60002bf5 CY |
7325 | |
7326 | /* We can't "keep in place" the first subimage. */ | |
7327 | if (j == 0) | |
7328 | disposal = 2; | |
7329 | ||
e013fb34 CY |
7330 | /* For disposal == 0, the spec says "No disposal specified. The |
7331 | decoder is not required to take any action." In practice, it | |
7332 | seems we need to treat this like "keep in place", see e.g. | |
7333 | http://upload.wikimedia.org/wikipedia/commons/3/37/Clock.gif */ | |
7334 | if (disposal == 0) | |
7335 | disposal = 1; | |
7336 | ||
60002bf5 CY |
7337 | /* Allocate subimage colors. */ |
7338 | memset (pixel_colors, 0, sizeof pixel_colors); | |
7339 | gif_color_map = subimage->ImageDesc.ColorMap; | |
7340 | if (!gif_color_map) | |
7341 | gif_color_map = gif->SColorMap; | |
7342 | ||
7343 | if (gif_color_map) | |
7344 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
4ef0d4d0 | 7345 | { |
60002bf5 CY |
7346 | if (transparency_color_index == i) |
7347 | pixel_colors[i] = STRINGP (specified_bg) | |
7348 | ? bgcolor : FRAME_BACKGROUND_PIXEL (f); | |
7349 | else | |
7350 | { | |
7351 | int r = gif_color_map->Colors[i].Red << 8; | |
7352 | int g = gif_color_map->Colors[i].Green << 8; | |
7353 | int b = gif_color_map->Colors[i].Blue << 8; | |
7354 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7355 | } | |
4ef0d4d0 | 7356 | } |
60002bf5 CY |
7357 | |
7358 | /* Apply the pixel values. */ | |
7359 | if (gif->SavedImages[j].ImageDesc.Interlace) | |
7360 | { | |
7361 | int row, pass; | |
7362 | ||
7363 | for (y = 0, row = interlace_start[0], pass = 0; | |
e013fb34 | 7364 | y < subimg_height; |
60002bf5 CY |
7365 | y++, row += interlace_increment[pass]) |
7366 | { | |
e013fb34 | 7367 | if (row >= subimg_height) |
60002bf5 CY |
7368 | { |
7369 | row = interlace_start[++pass]; | |
e013fb34 | 7370 | while (row >= subimg_height) |
60002bf5 CY |
7371 | row = interlace_start[++pass]; |
7372 | } | |
7373 | ||
e013fb34 | 7374 | for (x = 0; x < subimg_width; x++) |
60002bf5 | 7375 | { |
e013fb34 | 7376 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7377 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7378 | XPutPixel (ximg, x + subimg_left, row + subimg_top, |
7379 | pixel_colors[c]); | |
60002bf5 CY |
7380 | } |
7381 | } | |
7382 | } | |
7383 | else | |
7384 | { | |
e013fb34 CY |
7385 | for (y = 0; y < subimg_height; ++y) |
7386 | for (x = 0; x < subimg_width; ++x) | |
60002bf5 | 7387 | { |
e013fb34 | 7388 | int c = raster[y * subimg_width + x]; |
60002bf5 | 7389 | if (transparency_color_index != c || disposal != 1) |
e013fb34 CY |
7390 | XPutPixel (ximg, x + subimg_left, y + subimg_top, |
7391 | pixel_colors[c]); | |
60002bf5 CY |
7392 | } |
7393 | } | |
4ef0d4d0 KS |
7394 | } |
7395 | ||
60002bf5 CY |
7396 | #ifdef COLOR_TABLE_SUPPORT |
7397 | img->colors = colors_in_color_table (&img->ncolors); | |
7398 | free_color_table (); | |
7399 | #endif /* COLOR_TABLE_SUPPORT */ | |
7400 | ||
1546c559 JL |
7401 | /* Save GIF image extension data for `image-metadata'. |
7402 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
b50691aa | 7403 | img->lisp_data = Qnil; |
60002bf5 | 7404 | if (gif->SavedImages[idx].ExtensionBlockCount > 0) |
6ac3c7bb | 7405 | { |
13464394 | 7406 | int delay = 0; |
60002bf5 CY |
7407 | ExtensionBlock *ext = gif->SavedImages[idx].ExtensionBlocks; |
7408 | for (i = 0; i < gif->SavedImages[idx].ExtensionBlockCount; i++, ext++) | |
6ac3c7bb | 7409 | /* Append (... FUNCTION "BYTES") */ |
1100a63c CY |
7410 | { |
7411 | img->lisp_data | |
7412 | = Fcons (make_number (ext->Function), | |
7413 | Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7414 | img->lisp_data)); | |
7415 | if (ext->Function == GIF_LOCAL_DESCRIPTOR_EXTENSION | |
7416 | && ext->ByteCount == 4) | |
7417 | { | |
7418 | delay = ext->Bytes[2] << CHAR_BIT; | |
7419 | delay |= ext->Bytes[1]; | |
7420 | } | |
7421 | } | |
b50691aa | 7422 | img->lisp_data = Fcons (Qextension_data, |
1100a63c CY |
7423 | Fcons (img->lisp_data, Qnil)); |
7424 | if (delay) | |
7425 | img->lisp_data | |
7426 | = Fcons (Qdelay, | |
13464394 | 7427 | Fcons (make_float (delay / 100.0), |
1100a63c | 7428 | img->lisp_data)); |
6ac3c7bb | 7429 | } |
1100a63c | 7430 | |
6ac3c7bb | 7431 | if (gif->ImageCount > 1) |
b50691aa CY |
7432 | img->lisp_data = Fcons (Qcount, |
7433 | Fcons (make_number (gif->ImageCount), | |
7434 | img->lisp_data)); | |
6ac3c7bb | 7435 | |
4ef0d4d0 KS |
7436 | fn_DGifCloseFile (gif); |
7437 | ||
7438 | /* Maybe fill in the background field while we have ximg handy. */ | |
7439 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7440 | /* Casting avoids a GCC warning. */ |
7441 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7442 | |
7443 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7444 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7445 | x_destroy_x_image (ximg); | |
7446 | ||
4ef0d4d0 KS |
7447 | return 1; |
7448 | } | |
7449 | ||
2e09fef1 | 7450 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7451 | |
edfda783 AR |
7452 | #ifdef HAVE_NS |
7453 | static int | |
7454 | gif_load (struct frame *f, struct image *img) | |
7455 | { | |
ed3751c8 JB |
7456 | return ns_load_image (f, img, |
7457 | image_spec_value (img->spec, QCfile, NULL), | |
7458 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7459 | } |
7460 | #endif /* HAVE_NS */ | |
7461 | ||
4ef0d4d0 KS |
7462 | #endif /* HAVE_GIF */ |
7463 | ||
7464 | ||
3de25479 | 7465 | /*********************************************************************** |
a32d4040 | 7466 | ImageMagick |
4917006b | 7467 | ***********************************************************************/ |
3de25479 | 7468 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 | 7469 | |
4b66faf3 | 7470 | static Lisp_Object Qimagemagick; |
a32d4040 | 7471 | |
d66c4c7c CY |
7472 | static int imagemagick_image_p (Lisp_Object); |
7473 | static int imagemagick_load (struct frame *, struct image *); | |
7474 | static void imagemagick_clear_image (struct frame *, struct image *); | |
7475 | ||
a32d4040 | 7476 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7477 | |
7478 | enum imagemagick_keyword_index | |
4917006b JV |
7479 | { |
7480 | IMAGEMAGICK_TYPE, | |
7481 | IMAGEMAGICK_DATA, | |
7482 | IMAGEMAGICK_FILE, | |
7483 | IMAGEMAGICK_ASCENT, | |
7484 | IMAGEMAGICK_MARGIN, | |
7485 | IMAGEMAGICK_RELIEF, | |
7486 | IMAGEMAGICK_ALGORITHM, | |
7487 | IMAGEMAGICK_HEURISTIC_MASK, | |
7488 | IMAGEMAGICK_MASK, | |
7489 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7490 | IMAGEMAGICK_HEIGHT, |
7491 | IMAGEMAGICK_WIDTH, | |
7492 | IMAGEMAGICK_ROTATION, | |
7493 | IMAGEMAGICK_CROP, | |
4917006b JV |
7494 | IMAGEMAGICK_LAST |
7495 | }; | |
3de25479 JV |
7496 | |
7497 | /* Vector of image_keyword structures describing the format | |
7498 | of valid user-defined image specifications. */ | |
7499 | ||
7500 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7501 | { |
7502 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7503 | {":data", IMAGE_STRING_VALUE, 0}, | |
7504 | {":file", IMAGE_STRING_VALUE, 0}, | |
7505 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 7506 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4917006b JV |
7507 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
7508 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7509 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7510 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7511 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7512 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7513 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7514 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7515 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7516 | }; |
a32d4040 | 7517 | |
d66c4c7c CY |
7518 | /* Structure describing the image type for any image handled via |
7519 | ImageMagick. */ | |
7520 | ||
7521 | static struct image_type imagemagick_type = | |
7522 | { | |
7523 | &Qimagemagick, | |
7524 | imagemagick_image_p, | |
7525 | imagemagick_load, | |
7526 | imagemagick_clear_image, | |
7527 | NULL | |
7528 | }; | |
7529 | ||
3de25479 JV |
7530 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7531 | ||
7532 | static void | |
4917006b JV |
7533 | imagemagick_clear_image (struct frame *f, |
7534 | struct image *img) | |
3de25479 | 7535 | { |
3de25479 JV |
7536 | x_clear_image (f, img); |
7537 | } | |
7538 | ||
3de25479 JV |
7539 | /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do |
7540 | this by calling parse_image_spec and supplying the keywords that | |
7541 | identify the IMAGEMAGICK format. */ | |
7542 | ||
7543 | static int | |
4917006b | 7544 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7545 | { |
7546 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7547 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7548 | |
7549 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7550 | return 0; | |
7551 | ||
7552 | /* Must specify either the :data or :file keyword. */ | |
7553 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7554 | } | |
7555 | ||
7556 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
c7015153 | 7557 | Therefore rename the function so it doesn't collide with ImageMagick. */ |
3de25479 JV |
7558 | #define DrawRectangle DrawRectangleGif |
7559 | #include <wand/MagickWand.h> | |
7560 | ||
60737f02 PE |
7561 | /* ImageMagick 6.5.3 through 6.6.5 hid PixelGetMagickColor for some reason. |
7562 | Emacs seems to work fine with the hidden version, so unhide it. */ | |
7563 | #include <magick/version.h> | |
7564 | #if 0x653 <= MagickLibVersion && MagickLibVersion <= 0x665 | |
7565 | extern WandExport void PixelGetMagickColor (const PixelWand *, | |
7566 | MagickPixelPacket *); | |
7567 | #endif | |
7568 | ||
d1d7b339 JL |
7569 | /* Log ImageMagick error message. |
7570 | Useful when a ImageMagick function returns the status `MagickFalse'. */ | |
7571 | ||
7572 | static void | |
7573 | imagemagick_error (MagickWand *wand) | |
7574 | { | |
7575 | char *description; | |
7576 | ExceptionType severity; | |
7577 | ||
7578 | description = MagickGetException (wand, &severity); | |
7579 | image_error ("ImageMagick error: %s", | |
7580 | make_string (description, strlen (description)), | |
7581 | Qnil); | |
7582 | description = (char *) MagickRelinquishMemory (description); | |
7583 | } | |
7584 | ||
d66c4c7c CY |
7585 | /* Helper function for imagemagick_load, which does the actual loading |
7586 | given contents and size, apart from frame and image structures, | |
7587 | passed from imagemagick_load. Uses librimagemagick to do most of | |
7588 | the image processing. | |
3de25479 | 7589 | |
d66c4c7c CY |
7590 | F is a pointer to the Emacs frame; IMG to the image structure to |
7591 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
7592 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
7593 | either the file name or the image data. | |
3de25479 | 7594 | |
d66c4c7c | 7595 | Return non-zero if successful. */ |
3de25479 JV |
7596 | |
7597 | static int | |
d66c4c7c CY |
7598 | imagemagick_load_image (struct frame *f, struct image *img, |
7599 | unsigned char *contents, unsigned int size, | |
33290528 | 7600 | char *filename) |
3de25479 | 7601 | { |
1ab0dee5 AS |
7602 | size_t width; |
7603 | size_t height; | |
3de25479 | 7604 | |
d66c4c7c | 7605 | MagickBooleanType status; |
3de25479 JV |
7606 | |
7607 | XImagePtr ximg; | |
3de25479 JV |
7608 | int x; |
7609 | int y; | |
7610 | ||
7611 | MagickWand *image_wand; | |
7574650a | 7612 | MagickWand *ping_wand; |
3de25479 JV |
7613 | PixelIterator *iterator; |
7614 | PixelWand **pixels; | |
7615 | MagickPixelPacket pixel; | |
4917006b | 7616 | Lisp_Object image; |
7574650a | 7617 | Lisp_Object value; |
33290528 | 7618 | Lisp_Object crop; |
13464394 | 7619 | EMACS_INT ino; |
4917006b JV |
7620 | int desired_width, desired_height; |
7621 | double rotation; | |
7574650a | 7622 | int pixelwidth; |
f3700365 JV |
7623 | ImageInfo *image_info; |
7624 | ExceptionInfo *exception; | |
7625 | Image * im_image; | |
3de25479 | 7626 | |
7574650a | 7627 | |
a32d4040 CY |
7628 | /* Handle image index for image types who can contain more than one image. |
7629 | Interface :index is same as for GIF. First we "ping" the image to see how | |
7630 | many sub-images it contains. Pinging is faster than loading the image to | |
7631 | find out things about it. */ | |
f853f599 | 7632 | |
a32d4040 | 7633 | /* Initialize the imagemagick environment. */ |
f853f599 | 7634 | MagickWandGenesis (); |
3de25479 JV |
7635 | image = image_spec_value (img->spec, QCindex, NULL); |
7636 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a | 7637 | ping_wand = NewMagickWand (); |
d1d7b339 | 7638 | /* MagickSetResolution (ping_wand, 2, 2); (Bug#10112) */ |
fa4fdb5c | 7639 | |
f3700365 JV |
7640 | if (filename != NULL) |
7641 | { | |
7574650a | 7642 | status = MagickPingImage (ping_wand, filename); |
f3700365 JV |
7643 | } |
7644 | else | |
7645 | { | |
7574650a AS |
7646 | status = MagickPingImageBlob (ping_wand, contents, size); |
7647 | } | |
7648 | ||
d1d7b339 JL |
7649 | if (status == MagickFalse) |
7650 | { | |
7651 | imagemagick_error (ping_wand); | |
7652 | DestroyMagickWand (ping_wand); | |
7653 | return 0; | |
7654 | } | |
fa4fdb5c | 7655 | |
13464394 | 7656 | if (! (0 <= ino && ino < MagickGetNumberImages (ping_wand))) |
7574650a AS |
7657 | { |
7658 | image_error ("Invalid image number `%s' in image `%s'", | |
7659 | image, img->spec); | |
7660 | DestroyMagickWand (ping_wand); | |
7661 | return 0; | |
f3700365 | 7662 | } |
431dab04 | 7663 | |
5e617bc2 | 7664 | if (MagickGetNumberImages (ping_wand) > 1) |
b50691aa | 7665 | img->lisp_data = |
d2a2d277 | 7666 | Fcons (Qcount, |
7574650a | 7667 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
b50691aa | 7668 | img->lisp_data)); |
f3700365 JV |
7669 | |
7670 | DestroyMagickWand (ping_wand); | |
f853f599 | 7671 | |
d66c4c7c CY |
7672 | /* Now we know how many images are inside the file. If it's not a |
7673 | bundle, the number is one. */ | |
f3700365 JV |
7674 | |
7675 | if (filename != NULL) | |
7676 | { | |
7574650a AS |
7677 | image_info = CloneImageInfo ((ImageInfo *) NULL); |
7678 | (void) strcpy (image_info->filename, filename); | |
7679 | image_info->number_scenes = 1; | |
7680 | image_info->scene = ino; | |
7681 | exception = AcquireExceptionInfo (); | |
f3700365 | 7682 | |
7574650a | 7683 | im_image = ReadImage (image_info, exception); |
466cbae9 | 7684 | DestroyExceptionInfo (exception); |
f3700365 | 7685 | |
f7e13da3 PE |
7686 | if (im_image == NULL) |
7687 | goto imagemagick_no_wand; | |
7688 | image_wand = NewMagickWandFromImage (im_image); | |
5e617bc2 | 7689 | DestroyImage (im_image); |
f3700365 | 7690 | } |
3de25479 | 7691 | else |
f3700365 | 7692 | { |
7574650a | 7693 | image_wand = NewMagickWand (); |
f7e13da3 | 7694 | if (MagickReadImageBlob (image_wand, contents, size) == MagickFalse) |
d1d7b339 JL |
7695 | { |
7696 | imagemagick_error (image_wand); | |
7697 | goto imagemagick_error; | |
7698 | } | |
f3700365 | 7699 | } |
f853f599 | 7700 | |
d2a2d277 | 7701 | /* If width and/or height is set in the display spec assume we want |
a32d4040 | 7702 | to scale to those values. If either h or w is unspecified, the |
f3700365 | 7703 | unspecified should be calculated from the specified to preserve |
549a73b9 | 7704 | aspect ratio. */ |
3de25479 | 7705 | |
3de25479 JV |
7706 | value = image_spec_value (img->spec, QCwidth, NULL); |
7707 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7708 | value = image_spec_value (img->spec, QCheight, NULL); | |
7709 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7710 | |
bdf6a35d JV |
7711 | height = MagickGetImageHeight (image_wand); |
7712 | width = MagickGetImageWidth (image_wand); | |
7713 | ||
a32d4040 CY |
7714 | if (desired_width != -1 && desired_height == -1) |
7715 | /* w known, calculate h. */ | |
7716 | desired_height = (double) desired_width / width * height; | |
7717 | if (desired_width == -1 && desired_height != -1) | |
7718 | /* h known, calculate w. */ | |
7719 | desired_width = (double) desired_height / height * width; | |
7720 | if (desired_width != -1 && desired_height != -1) | |
4917006b | 7721 | { |
7574650a AS |
7722 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7723 | if (status == MagickFalse) | |
7724 | { | |
7725 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
d1d7b339 | 7726 | imagemagick_error (image_wand); |
7574650a AS |
7727 | goto imagemagick_error; |
7728 | } | |
3de25479 | 7729 | } |
3de25479 | 7730 | |
f3700365 | 7731 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7732 | efficient. */ |
7733 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7734 | ||
13464394 | 7735 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7736 | { |
a32d4040 CY |
7737 | /* After some testing, it seems MagickCropImage is the fastest crop |
7738 | function in ImageMagick. This crop function seems to do less copying | |
7739 | than the alternatives, but it still reads the entire image into memory | |
13464394 | 7740 | before cropping, which is apparently difficult to avoid when using |
a32d4040 | 7741 | imagemagick. */ |
13464394 | 7742 | size_t crop_width = XINT (XCAR (crop)); |
7574650a | 7743 | crop = XCDR (crop); |
13464394 | 7744 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (size_t, XCAR (crop))) |
7574650a | 7745 | { |
13464394 | 7746 | size_t crop_height = XINT (XCAR (crop)); |
7574650a | 7747 | crop = XCDR (crop); |
13464394 | 7748 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7749 | { |
13464394 | 7750 | ssize_t crop_x = XINT (XCAR (crop)); |
7574650a | 7751 | crop = XCDR (crop); |
13464394 | 7752 | if (CONSP (crop) && TYPE_RANGED_INTEGERP (ssize_t, XCAR (crop))) |
7574650a | 7753 | { |
13464394 PE |
7754 | ssize_t crop_y = XINT (XCAR (crop)); |
7755 | MagickCropImage (image_wand, crop_width, crop_height, | |
7756 | crop_x, crop_y); | |
7574650a AS |
7757 | } |
7758 | } | |
7759 | } | |
7760 | } | |
7761 | ||
d2a2d277 JV |
7762 | /* Furthermore :rotation. we need background color and angle for |
7763 | rotation. */ | |
3de25479 | 7764 | /* |
d2a2d277 JV |
7765 | TODO background handling for rotation specified_bg = |
7766 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7767 | (specified_bg). */ |
4917006b JV |
7768 | value = image_spec_value (img->spec, QCrotation, NULL); |
7769 | if (FLOATP (value)) | |
7770 | { | |
7574650a | 7771 | PixelWand* background = NewPixelWand (); |
3de25479 | 7772 | PixelSetColor (background, "#ffffff");/*TODO remove hardcode*/ |
7574650a | 7773 | |
3de25479 | 7774 | rotation = extract_float (value); |
7574650a | 7775 | |
4917006b | 7776 | status = MagickRotateImage (image_wand, background, rotation); |
3de25479 | 7777 | DestroyPixelWand (background); |
4917006b JV |
7778 | if (status == MagickFalse) |
7779 | { | |
7780 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
d1d7b339 | 7781 | imagemagick_error (image_wand); |
4917006b JV |
7782 | goto imagemagick_error; |
7783 | } | |
3de25479 | 7784 | } |
7574650a | 7785 | |
d66c4c7c | 7786 | /* Finally we are done manipulating the image. Figure out the |
e1dbe924 | 7787 | resulting width/height and transfer ownership to Emacs. */ |
4917006b JV |
7788 | height = MagickGetImageHeight (image_wand); |
7789 | width = MagickGetImageWidth (image_wand); | |
7574650a | 7790 | |
3f791afe PE |
7791 | if (! (width <= INT_MAX && height <= INT_MAX |
7792 | && check_image_size (f, width, height))) | |
3de25479 JV |
7793 | { |
7794 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7795 | goto imagemagick_error; | |
7796 | } | |
7574650a | 7797 | |
3de25479 JV |
7798 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7799 | went ok. */ | |
3de25479 JV |
7800 | |
7801 | init_color_table (); | |
af008560 GM |
7802 | |
7803 | if (imagemagick_render_type == 0) | |
4917006b | 7804 | { |
13464394 PE |
7805 | size_t image_height; |
7806 | ||
4917006b | 7807 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
d2a2d277 JV |
7808 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7809 | &ximg, &img->pixmap)) | |
4917006b | 7810 | { |
466cbae9 AS |
7811 | #ifdef COLOR_TABLE_SUPPORT |
7812 | free_color_table (); | |
7813 | #endif | |
5e617bc2 | 7814 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
4917006b JV |
7815 | goto imagemagick_error; |
7816 | } | |
7574650a | 7817 | |
53964682 | 7818 | /* Copy imagemagick image to x with primitive yet robust pixel |
4917006b | 7819 | pusher loop. This has been tested a lot with many different |
549a73b9 | 7820 | images. */ |
7574650a | 7821 | |
4917006b JV |
7822 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7823 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7824 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7825 | { |
466cbae9 AS |
7826 | #ifdef COLOR_TABLE_SUPPORT |
7827 | free_color_table (); | |
7828 | #endif | |
7829 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7830 | image_error ("Imagemagick pixel iterator creation failed", |
7831 | Qnil, Qnil); | |
3de25479 | 7832 | goto imagemagick_error; |
4917006b JV |
7833 | } |
7834 | ||
13464394 PE |
7835 | image_height = MagickGetImageHeight (image_wand); |
7836 | for (y = 0; y < image_height; y++) | |
4917006b JV |
7837 | { |
7838 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7839 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7840 | break; |
7841 | for (x = 0; x < (long) width; x++) | |
7842 | { | |
7843 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7844 | XPutPixel (ximg, x, y, |
7845 | lookup_rgb_color (f, | |
7846 | pixel.red, | |
7847 | pixel.green, | |
7848 | pixel.blue)); | |
4917006b JV |
7849 | } |
7850 | } | |
7851 | DestroyPixelIterator (iterator); | |
3de25479 | 7852 | } |
af008560 | 7853 | else /* imagemagick_render_type != 0 */ |
4917006b | 7854 | { |
0b381c7e | 7855 | /* Magicexportimage is normally faster than pixelpushing. This |
3234a340 JV |
7856 | method is also well tested. Some aspects of this method are |
7857 | ad-hoc and needs to be more researched. */ | |
4917006b | 7858 | int imagedepth = 24;/*MagickGetImageDepth(image_wand);*/ |
33290528 | 7859 | const char *exportdepth = imagedepth <= 8 ? "I" : "BGRP";/*"RGBP";*/ |
4917006b | 7860 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ |
d2a2d277 | 7861 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, |
7574650a AS |
7862 | &ximg, &img->pixmap)) |
7863 | { | |
466cbae9 AS |
7864 | #ifdef COLOR_TABLE_SUPPORT |
7865 | free_color_table (); | |
7866 | #endif | |
5e617bc2 | 7867 | image_error ("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
7574650a AS |
7868 | goto imagemagick_error; |
7869 | } | |
7870 | ||
3de25479 | 7871 | |
c7015153 | 7872 | /* Oddly, the below code doesn't seem to work:*/ |
4917006b JV |
7873 | /* switch(ximg->bitmap_unit){ */ |
7874 | /* case 8: */ | |
7875 | /* pixelwidth=CharPixel; */ | |
7876 | /* break; */ | |
7877 | /* case 16: */ | |
7878 | /* pixelwidth=ShortPixel; */ | |
7879 | /* break; */ | |
7880 | /* case 32: */ | |
7881 | /* pixelwidth=LongPixel; */ | |
7882 | /* break; */ | |
7883 | /* } */ | |
7884 | /* | |
7885 | Here im just guessing the format of the bitmap. | |
7886 | happens to work fine for: | |
7887 | - bw djvu images | |
7888 | on rgb display. | |
7889 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
4917006b JV |
7890 | */ |
7891 | pixelwidth = CharPixel;/*??? TODO figure out*/ | |
7574650a AS |
7892 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7893 | MagickExportImagePixels (image_wand, | |
7894 | 0, 0, | |
7895 | width, height, | |
7896 | exportdepth, | |
7897 | pixelwidth, | |
7898 | /*&(img->pixmap));*/ | |
7899 | ximg->data); | |
431dab04 | 7900 | #else |
c7015153 | 7901 | image_error ("You don't have MagickExportImagePixels, upgrade ImageMagick!", |
7574650a AS |
7902 | Qnil, Qnil); |
7903 | #endif | |
4917006b | 7904 | } |
7574650a | 7905 | |
3ed42149 | 7906 | |
3de25479 JV |
7907 | #ifdef COLOR_TABLE_SUPPORT |
7908 | /* Remember colors allocated for this image. */ | |
7909 | img->colors = colors_in_color_table (&img->ncolors); | |
7910 | free_color_table (); | |
7911 | #endif /* COLOR_TABLE_SUPPORT */ | |
7912 | ||
7913 | ||
7914 | img->width = width; | |
7915 | img->height = height; | |
7916 | ||
3de25479 JV |
7917 | /* Put the image into the pixmap, then free the X image and its |
7918 | buffer. */ | |
7919 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7920 | x_destroy_x_image (ximg); |
7921 | ||
7922 | ||
f3700365 | 7923 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7924 | DestroyMagickWand (image_wand); |
03d32f1b | 7925 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7926 | MagickWandTerminus (); |
3de25479 JV |
7927 | |
7928 | return 1; | |
7929 | ||
7930 | imagemagick_error: | |
466cbae9 | 7931 | DestroyMagickWand (image_wand); |
f7e13da3 | 7932 | imagemagick_no_wand: |
f853f599 | 7933 | MagickWandTerminus (); |
3de25479 JV |
7934 | /* TODO more cleanup. */ |
7935 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7936 | return 0; |
7937 | } | |
7938 | ||
4917006b JV |
7939 | |
7940 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if | |
7941 | successful. this function will go into the imagemagick_type structure, and | |
7942 | the prototype thus needs to be compatible with that structure. */ | |
7943 | ||
7944 | static int | |
d66c4c7c | 7945 | imagemagick_load (struct frame *f, struct image *img) |
4917006b JV |
7946 | { |
7947 | int success_p = 0; | |
7948 | Lisp_Object file_name; | |
7949 | ||
7950 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
7951 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
7952 | if (STRINGP (file_name)) | |
7953 | { | |
7954 | Lisp_Object file; | |
4917006b JV |
7955 | |
7956 | file = x_find_image_file (file_name); | |
4917006b JV |
7957 | if (!STRINGP (file)) |
7958 | { | |
7959 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
7960 | return 0; |
7961 | } | |
33290528 | 7962 | success_p = imagemagick_load_image (f, img, 0, 0, SSDATA (file)); |
4917006b JV |
7963 | } |
7964 | /* Else its not a file, its a lisp object. Load the image from a | |
7965 | lisp object rather than a file. */ | |
7966 | else | |
7967 | { | |
7968 | Lisp_Object data; | |
7969 | ||
7970 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
7971 | if (!STRINGP (data)) |
7972 | { | |
7973 | image_error ("Invalid image data `%s'", data, Qnil); | |
7974 | return 0; | |
7975 | } | |
d2a2d277 JV |
7976 | success_p = imagemagick_load_image (f, img, SDATA (data), |
7977 | SBYTES (data), NULL); | |
4917006b JV |
7978 | } |
7979 | ||
7980 | return success_p; | |
7981 | } | |
7982 | ||
a7ca3326 | 7983 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
7984 | doc: /* Return a list of image types supported by ImageMagick. |
7985 | Each entry in this list is a symbol named after an ImageMagick format | |
7986 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
7987 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
dd605cc4 | 7988 | You can also try the shell command: `identify -list format'. |
d66c4c7c CY |
7989 | |
7990 | Note that ImageMagick recognizes many file-types that Emacs does not | |
32d72c2f GM |
7991 | recognize as images, such as C. See `imagemagick-types-enable' |
7992 | and `imagemagick-types-inhibit'. */) | |
a8101f66 | 7993 | (void) |
3de25479 JV |
7994 | { |
7995 | Lisp_Object typelist = Qnil; | |
1ab0dee5 | 7996 | size_t numf = 0; |
3de25479 | 7997 | ExceptionInfo ex; |
7574650a | 7998 | char **imtypes = GetMagickList ("*", &numf, &ex); |
3f791afe | 7999 | size_t i; |
3de25479 | 8000 | Lisp_Object Qimagemagicktype; |
4917006b JV |
8001 | for (i = 0; i < numf; i++) |
8002 | { | |
8003 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
8004 | typelist = Fcons (Qimagemagicktype, typelist); |
8005 | } | |
d1d7b339 | 8006 | return Fnreverse (typelist); |
3de25479 | 8007 | } |
7574650a | 8008 | |
3de25479 JV |
8009 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
8010 | ||
8011 | ||
4ef0d4d0 | 8012 | \f |
4ab27a43 GM |
8013 | /*********************************************************************** |
8014 | SVG | |
8015 | ***********************************************************************/ | |
8016 | ||
8017 | #if defined (HAVE_RSVG) | |
8018 | ||
8019 | /* Function prototypes. */ | |
8020 | ||
f57e2426 J |
8021 | static int svg_image_p (Lisp_Object object); |
8022 | static int svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 8023 | |
f57e2426 | 8024 | static int svg_load_image (struct frame *, struct image *, |
dd52fcea | 8025 | unsigned char *, ptrdiff_t); |
4ab27a43 GM |
8026 | |
8027 | /* The symbol `svg' identifying images of this type. */ | |
8028 | ||
4b66faf3 | 8029 | static Lisp_Object Qsvg; |
4ab27a43 GM |
8030 | |
8031 | /* Indices of image specification fields in svg_format, below. */ | |
8032 | ||
8033 | enum svg_keyword_index | |
8034 | { | |
8035 | SVG_TYPE, | |
8036 | SVG_DATA, | |
8037 | SVG_FILE, | |
8038 | SVG_ASCENT, | |
8039 | SVG_MARGIN, | |
8040 | SVG_RELIEF, | |
8041 | SVG_ALGORITHM, | |
8042 | SVG_HEURISTIC_MASK, | |
8043 | SVG_MASK, | |
8044 | SVG_BACKGROUND, | |
8045 | SVG_LAST | |
8046 | }; | |
8047 | ||
8048 | /* Vector of image_keyword structures describing the format | |
8049 | of valid user-defined image specifications. */ | |
8050 | ||
91433552 | 8051 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
8052 | { |
8053 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8054 | {":data", IMAGE_STRING_VALUE, 0}, | |
8055 | {":file", IMAGE_STRING_VALUE, 0}, | |
8056 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8057 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ab27a43 GM |
8058 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8059 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8060 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8061 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8062 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8063 | }; | |
8064 | ||
8065 | /* Structure describing the image type `svg'. Its the same type of | |
8066 | structure defined for all image formats, handled by emacs image | |
8067 | functions. See struct image_type in dispextern.h. */ | |
8068 | ||
8069 | static struct image_type svg_type = | |
8070 | { | |
8071 | /* An identifier showing that this is an image structure for the SVG format. */ | |
8072 | &Qsvg, | |
8073 | /* Handle to a function that can be used to identify a SVG file. */ | |
8074 | svg_image_p, | |
8075 | /* Handle to function used to load a SVG file. */ | |
8076 | svg_load, | |
8077 | /* Handle to function to free sresources for SVG. */ | |
8078 | x_clear_image, | |
8079 | /* An internal field to link to the next image type in a list of | |
8080 | image types, will be filled in when registering the format. */ | |
c21e6151 | 8081 | NULL |
4ab27a43 GM |
8082 | }; |
8083 | ||
8084 | ||
8085 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
8086 | this by calling parse_image_spec and supplying the keywords that | |
8087 | identify the SVG format. */ | |
8088 | ||
8089 | static int | |
d3da34e0 | 8090 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
8091 | { |
8092 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 8093 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
8094 | |
8095 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8096 | return 0; | |
8097 | ||
8098 | /* Must specify either the :data or :file keyword. */ | |
8099 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8100 | } | |
8101 | ||
8102 | #include <librsvg/rsvg.h> | |
8103 | ||
5fc9fdeb JR |
8104 | #ifdef HAVE_NTGUI |
8105 | ||
8106 | /* SVG library functions. */ | |
df61c790 AS |
8107 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
8108 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
8109 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
8110 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
8111 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
df61c790 AS |
8112 | |
8113 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
8114 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
8115 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
8116 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
8117 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
8118 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
8119 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
8120 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
8121 | ||
8122 | DEF_IMGLIB_FN (void, g_type_init); | |
8123 | DEF_IMGLIB_FN (void, g_object_unref); | |
8124 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 8125 | |
df23bf08 | 8126 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb JR |
8127 | |
8128 | static int | |
8129 | init_svg_functions (Lisp_Object libraries) | |
8130 | { | |
df23bf08 | 8131 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb JR |
8132 | |
8133 | if (!(glib = w32_delayed_load (libraries, Qglib)) | |
df23bf08 | 8134 | || !(gobject = w32_delayed_load (libraries, Qgobject)) |
5fc9fdeb JR |
8135 | || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf)) |
8136 | || !(library = w32_delayed_load (libraries, Qsvg))) | |
8137 | return 0; | |
8138 | ||
8139 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8140 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8141 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8142 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8143 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
5fc9fdeb JR |
8144 | |
8145 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8146 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8147 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8148 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8149 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8150 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8151 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8152 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8153 | ||
df23bf08 JR |
8154 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8155 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8156 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8157 | |
5fc9fdeb JR |
8158 | return 1; |
8159 | } | |
4ab27a43 | 8160 | |
5fc9fdeb JR |
8161 | #else |
8162 | /* The following aliases for library functions allow dynamic loading | |
8163 | to be used on some platforms. */ | |
4ab27a43 | 8164 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8165 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8166 | #define fn_rsvg_handle_write rsvg_handle_write |
8167 | #define fn_rsvg_handle_close rsvg_handle_close | |
8168 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
4ab27a43 | 8169 | |
5fc9fdeb JR |
8170 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8171 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8172 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8173 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8174 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8175 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8176 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8177 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8178 | ||
5fc9fdeb JR |
8179 | #define fn_g_type_init g_type_init |
8180 | #define fn_g_object_unref g_object_unref | |
8181 | #define fn_g_error_free g_error_free | |
8182 | #endif /* !HAVE_NTGUI */ | |
4ab27a43 GM |
8183 | |
8184 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8185 | successful. this function will go into the svg_type structure, and | |
8186 | the prototype thus needs to be compatible with that structure. */ | |
8187 | ||
8188 | static int | |
d3da34e0 | 8189 | svg_load (struct frame *f, struct image *img) |
4ab27a43 GM |
8190 | { |
8191 | int success_p = 0; | |
8192 | Lisp_Object file_name; | |
8193 | ||
8194 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8195 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8196 | if (STRINGP (file_name)) | |
8197 | { | |
8198 | Lisp_Object file; | |
8199 | unsigned char *contents; | |
dd52fcea | 8200 | ptrdiff_t size; |
4ab27a43 GM |
8201 | |
8202 | file = x_find_image_file (file_name); | |
4ab27a43 | 8203 | if (!STRINGP (file)) |
c21e6151 YM |
8204 | { |
8205 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8206 | return 0; |
8207 | } | |
8208 | ||
4ab27a43 | 8209 | /* Read the entire file into memory. */ |
33290528 | 8210 | contents = slurp_file (SSDATA (file), &size); |
4ab27a43 | 8211 | if (contents == NULL) |
c21e6151 YM |
8212 | { |
8213 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8214 | return 0; |
8215 | } | |
4ab27a43 | 8216 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8217 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8218 | xfree (contents); |
4ab27a43 GM |
8219 | } |
8220 | /* Else its not a file, its a lisp object. Load the image from a | |
8221 | lisp object rather than a file. */ | |
8222 | else | |
8223 | { | |
8224 | Lisp_Object data; | |
8225 | ||
8226 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8227 | if (!STRINGP (data)) |
8228 | { | |
8229 | image_error ("Invalid image data `%s'", data, Qnil); | |
8230 | return 0; | |
8231 | } | |
4ab27a43 GM |
8232 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8233 | } | |
8234 | ||
8235 | return success_p; | |
8236 | } | |
8237 | ||
bbe6f2aa JB |
8238 | /* svg_load_image is a helper function for svg_load, which does the |
8239 | actual loading given contents and size, apart from frame and image | |
8240 | structures, passed from svg_load. | |
4ab27a43 | 8241 | |
bbe6f2aa | 8242 | Uses librsvg to do most of the image processing. |
c21e6151 | 8243 | |
bbe6f2aa | 8244 | Returns non-zero when successful. */ |
4ab27a43 | 8245 | static int |
d3da34e0 JB |
8246 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8247 | struct image *img, /* Pointer to emacs image structure. */ | |
8248 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
dd52fcea | 8249 | ptrdiff_t size) /* Size of data in bytes. */ |
4ab27a43 GM |
8250 | { |
8251 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8252 | RsvgDimensionData dimension_data; |
33290528 | 8253 | GError *err = NULL; |
4ab27a43 GM |
8254 | GdkPixbuf *pixbuf; |
8255 | int width; | |
8256 | int height; | |
8257 | const guint8 *pixels; | |
8258 | int rowstride; | |
8259 | XImagePtr ximg; | |
c21e6151 | 8260 | Lisp_Object specified_bg; |
4ab27a43 GM |
8261 | XColor background; |
8262 | int x; | |
8263 | int y; | |
8264 | ||
8265 | /* g_type_init is a glib function that must be called prior to using | |
8266 | gnome type library functions. */ | |
5fc9fdeb | 8267 | fn_g_type_init (); |
4ab27a43 | 8268 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8269 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8270 | |
8271 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
33290528 PE |
8272 | fn_rsvg_handle_write (rsvg_handle, contents, size, &err); |
8273 | if (err) goto rsvg_error; | |
4ab27a43 GM |
8274 | |
8275 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8276 | for further writes. */ | |
33290528 PE |
8277 | fn_rsvg_handle_close (rsvg_handle, &err); |
8278 | if (err) goto rsvg_error; | |
e025c9c2 CY |
8279 | |
8280 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8281 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8282 | { |
8283 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8284 | goto rsvg_error; | |
8285 | } | |
b2996e57 | 8286 | |
4ab27a43 GM |
8287 | /* We can now get a valid pixel buffer from the svg file, if all |
8288 | went ok. */ | |
df61c790 | 8289 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8290 | if (!pixbuf) goto rsvg_error; |
8291 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8292 | |
8293 | /* Extract some meta data from the svg handle. */ | |
8294 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8295 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8296 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8297 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8298 | ||
8299 | /* Validate the svg meta data. */ | |
8300 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8301 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8302 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8303 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8304 | ||
8305 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8306 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8307 | { | |
5fc9fdeb | 8308 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8309 | return 0; |
8310 | } | |
4ab27a43 GM |
8311 | |
8312 | init_color_table (); | |
8313 | ||
c21e6151 YM |
8314 | /* Handle alpha channel by combining the image with a background |
8315 | color. */ | |
8316 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 | 8317 | if (!STRINGP (specified_bg) |
33290528 | 8318 | || !x_defined_color (f, SSDATA (specified_bg), &background, 0)) |
c21e6151 | 8319 | { |
d7e008d0 | 8320 | #ifndef HAVE_NS |
c21e6151 YM |
8321 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8322 | x_query_color (f, &background); | |
d7e008d0 | 8323 | #else |
ed3751c8 | 8324 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8325 | #endif |
c21e6151 | 8326 | } |
4ab27a43 | 8327 | |
8d3c4e79 CY |
8328 | /* SVG pixmaps specify transparency in the last byte, so right |
8329 | shift 8 bits to get rid of it, since emacs doesn't support | |
8330 | transparency. */ | |
8331 | background.red >>= 8; | |
8332 | background.green >>= 8; | |
8333 | background.blue >>= 8; | |
8334 | ||
4ab27a43 GM |
8335 | /* This loop handles opacity values, since Emacs assumes |
8336 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8337 | calculating the resulting color, given the transparency of the |
8338 | pixel, and the image background color. */ | |
4ab27a43 GM |
8339 | for (y = 0; y < height; ++y) |
8340 | { | |
8341 | for (x = 0; x < width; ++x) | |
8342 | { | |
13464394 PE |
8343 | int red; |
8344 | int green; | |
8345 | int blue; | |
8346 | int opacity; | |
4ab27a43 GM |
8347 | |
8348 | red = *pixels++; | |
8349 | green = *pixels++; | |
8350 | blue = *pixels++; | |
8351 | opacity = *pixels++; | |
8352 | ||
8353 | red = ((red * opacity) | |
8354 | + (background.red * ((1 << 8) - opacity))); | |
8355 | green = ((green * opacity) | |
8356 | + (background.green * ((1 << 8) - opacity))); | |
8357 | blue = ((blue * opacity) | |
8358 | + (background.blue * ((1 << 8) - opacity))); | |
8359 | ||
8360 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8361 | } | |
8362 | ||
8363 | pixels += rowstride - 4 * width; | |
8364 | } | |
8365 | ||
8366 | #ifdef COLOR_TABLE_SUPPORT | |
8367 | /* Remember colors allocated for this image. */ | |
8368 | img->colors = colors_in_color_table (&img->ncolors); | |
8369 | free_color_table (); | |
8370 | #endif /* COLOR_TABLE_SUPPORT */ | |
8371 | ||
5fc9fdeb | 8372 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8373 | |
c21e6151 YM |
8374 | img->width = width; |
8375 | img->height = height; | |
8376 | ||
8377 | /* Maybe fill in the background field while we have ximg handy. | |
8378 | Casting avoids a GCC warning. */ | |
8379 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8380 | ||
4ab27a43 GM |
8381 | /* Put the image into the pixmap, then free the X image and its |
8382 | buffer. */ | |
8383 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8384 | x_destroy_x_image (ximg); | |
8385 | ||
4ab27a43 GM |
8386 | return 1; |
8387 | ||
8388 | rsvg_error: | |
e025c9c2 | 8389 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8390 | /* FIXME: Use error->message so the user knows what is the actual |
8391 | problem with the image. */ | |
8392 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
33290528 | 8393 | fn_g_error_free (err); |
4ab27a43 GM |
8394 | return 0; |
8395 | } | |
8396 | ||
8397 | #endif /* defined (HAVE_RSVG) */ | |
8398 | ||
8399 | ||
8400 | ||
4ef0d4d0 KS |
8401 | \f |
8402 | /*********************************************************************** | |
8403 | Ghostscript | |
8404 | ***********************************************************************/ | |
8405 | ||
8406 | #ifdef HAVE_X_WINDOWS | |
8407 | #define HAVE_GHOSTSCRIPT 1 | |
8408 | #endif /* HAVE_X_WINDOWS */ | |
8409 | ||
4ef0d4d0 KS |
8410 | #ifdef HAVE_GHOSTSCRIPT |
8411 | ||
f57e2426 J |
8412 | static int gs_image_p (Lisp_Object object); |
8413 | static int gs_load (struct frame *f, struct image *img); | |
8414 | static void gs_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
8415 | |
8416 | /* Keyword symbols. */ | |
8417 | ||
955cbe7b | 8418 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8419 | |
8420 | /* Indices of image specification fields in gs_format, below. */ | |
8421 | ||
8422 | enum gs_keyword_index | |
8423 | { | |
8424 | GS_TYPE, | |
8425 | GS_PT_WIDTH, | |
8426 | GS_PT_HEIGHT, | |
8427 | GS_FILE, | |
8428 | GS_LOADER, | |
8429 | GS_BOUNDING_BOX, | |
8430 | GS_ASCENT, | |
8431 | GS_MARGIN, | |
8432 | GS_RELIEF, | |
8433 | GS_ALGORITHM, | |
8434 | GS_HEURISTIC_MASK, | |
8435 | GS_MASK, | |
8436 | GS_BACKGROUND, | |
8437 | GS_LAST | |
8438 | }; | |
8439 | ||
8440 | /* Vector of image_keyword structures describing the format | |
8441 | of valid user-defined image specifications. */ | |
8442 | ||
91433552 | 8443 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8444 | { |
8445 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8446 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8447 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8448 | {":file", IMAGE_STRING_VALUE, 1}, | |
8449 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8450 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8451 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
c4a07a4c | 8452 | {":margin", IMAGE_NON_NEGATIVE_INTEGER_VALUE_OR_PAIR, 0}, |
4ef0d4d0 KS |
8453 | {":relief", IMAGE_INTEGER_VALUE, 0}, |
8454 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8455 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8456 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8457 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8458 | }; | |
8459 | ||
8460 | /* Structure describing the image type `ghostscript'. */ | |
8461 | ||
8462 | static struct image_type gs_type = | |
8463 | { | |
8464 | &Qpostscript, | |
8465 | gs_image_p, | |
8466 | gs_load, | |
8467 | gs_clear_image, | |
8468 | NULL | |
8469 | }; | |
8470 | ||
8471 | ||
8472 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8473 | ||
8474 | static void | |
d3da34e0 | 8475 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 | 8476 | { |
4ef0d4d0 KS |
8477 | x_clear_image (f, img); |
8478 | } | |
8479 | ||
8480 | ||
8481 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8482 | specification. */ | |
8483 | ||
8484 | static int | |
d3da34e0 | 8485 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8486 | { |
8487 | struct image_keyword fmt[GS_LAST]; | |
8488 | Lisp_Object tem; | |
8489 | int i; | |
8490 | ||
72af86bd | 8491 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8492 | |
8493 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8494 | return 0; | |
8495 | ||
8496 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8497 | tem = fmt[GS_BOUNDING_BOX].value; | |
8498 | if (CONSP (tem)) | |
8499 | { | |
8500 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8501 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8502 | return 0; | |
8503 | if (!NILP (tem)) | |
8504 | return 0; | |
8505 | } | |
8506 | else if (VECTORP (tem)) | |
8507 | { | |
77b37c05 | 8508 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
8509 | return 0; |
8510 | for (i = 0; i < 4; ++i) | |
8511 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8512 | return 0; | |
8513 | } | |
8514 | else | |
8515 | return 0; | |
8516 | ||
8517 | return 1; | |
8518 | } | |
8519 | ||
8520 | ||
8521 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8522 | if successful. */ | |
8523 | ||
8524 | static int | |
d3da34e0 | 8525 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 | 8526 | { |
13464394 PE |
8527 | uprintmax_t printnum1, printnum2; |
8528 | char buffer[sizeof " " + INT_STRLEN_BOUND (printmax_t)]; | |
4ef0d4d0 | 8529 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; |
4ef0d4d0 KS |
8530 | Lisp_Object frame; |
8531 | double in_width, in_height; | |
8532 | Lisp_Object pixel_colors = Qnil; | |
8533 | ||
8534 | /* Compute pixel size of pixmap needed from the given size in the | |
8535 | image specification. Sizes in the specification are in pt. 1 pt | |
8536 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8537 | info. */ | |
8538 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8539 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
13464394 | 8540 | in_width *= FRAME_X_DISPLAY_INFO (f)->resx; |
4ef0d4d0 | 8541 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); |
7574650a | 8542 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
13464394 | 8543 | in_height *= FRAME_X_DISPLAY_INFO (f)->resy; |
4ef0d4d0 | 8544 | |
13464394 PE |
8545 | if (! (in_width <= INT_MAX && in_height <= INT_MAX |
8546 | && check_image_size (f, in_width, in_height))) | |
f1f25b99 | 8547 | { |
10ea2b82 | 8548 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8549 | return 0; |
8550 | } | |
13464394 PE |
8551 | img->width = in_width; |
8552 | img->height = in_height; | |
f1f25b99 | 8553 | |
4ef0d4d0 KS |
8554 | /* Create the pixmap. */ |
8555 | xassert (img->pixmap == NO_PIXMAP); | |
8556 | ||
ca4aa935 PE |
8557 | if (x_check_image_size (0, img->width, img->height)) |
8558 | { | |
8559 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8560 | BLOCK_INPUT; | |
8561 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8562 | img->width, img->height, | |
8563 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8564 | UNBLOCK_INPUT; | |
8565 | } | |
4ef0d4d0 KS |
8566 | |
8567 | if (!img->pixmap) | |
8568 | { | |
8569 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8570 | return 0; | |
8571 | } | |
8572 | ||
8573 | /* Call the loader to fill the pixmap. It returns a process object | |
8574 | if successful. We do not record_unwind_protect here because | |
8575 | other places in redisplay like calling window scroll functions | |
8576 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
13464394 PE |
8577 | printnum1 = FRAME_X_WINDOW (f); |
8578 | printnum2 = img->pixmap; | |
8579 | sprintf (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
8580 | window_and_pixmap_id = build_string (buffer); |
8581 | ||
13464394 PE |
8582 | printnum1 = FRAME_FOREGROUND_PIXEL (f); |
8583 | printnum2 = FRAME_BACKGROUND_PIXEL (f); | |
8584 | sprintf (buffer, "%"pMu" %"pMu, printnum1, printnum2); | |
4ef0d4d0 KS |
8585 | pixel_colors = build_string (buffer); |
8586 | ||
8587 | XSETFRAME (frame, f); | |
8588 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8589 | if (NILP (loader)) | |
8590 | loader = intern ("gs-load-image"); | |
8591 | ||
b50691aa CY |
8592 | img->lisp_data = call6 (loader, frame, img->spec, |
8593 | make_number (img->width), | |
8594 | make_number (img->height), | |
8595 | window_and_pixmap_id, | |
8596 | pixel_colors); | |
8597 | return PROCESSP (img->lisp_data); | |
4ef0d4d0 KS |
8598 | } |
8599 | ||
8600 | ||
8601 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8602 | frame F. Called from XTread_socket when receiving an event | |
8603 | telling Emacs that Ghostscript has finished drawing. */ | |
8604 | ||
8605 | void | |
d3da34e0 | 8606 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8607 | { |
354884c4 | 8608 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
13464394 PE |
8609 | int class; |
8610 | ptrdiff_t i; | |
4ef0d4d0 KS |
8611 | struct image *img; |
8612 | ||
8613 | /* Find the image containing PIXMAP. */ | |
8614 | for (i = 0; i < c->used; ++i) | |
8615 | if (c->images[i]->pixmap == pixmap) | |
8616 | break; | |
8617 | ||
8618 | /* Should someone in between have cleared the image cache, for | |
8619 | instance, give up. */ | |
8620 | if (i == c->used) | |
8621 | return; | |
8622 | ||
8623 | /* Kill the GS process. We should have found PIXMAP in the image | |
8624 | cache and its image should contain a process object. */ | |
8625 | img = c->images[i]; | |
b50691aa CY |
8626 | xassert (PROCESSP (img->lisp_data)); |
8627 | Fkill_process (img->lisp_data, Qnil); | |
8628 | img->lisp_data = Qnil; | |
4ef0d4d0 KS |
8629 | |
8630 | #if defined (HAVE_X_WINDOWS) | |
8631 | ||
8632 | /* On displays with a mutable colormap, figure out the colors | |
8633 | allocated for the image by looking at the pixels of an XImage for | |
8634 | img->pixmap. */ | |
8635 | class = FRAME_X_VISUAL (f)->class; | |
8636 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8637 | { | |
8638 | XImagePtr ximg; | |
8639 | ||
8640 | BLOCK_INPUT; | |
8641 | ||
8642 | /* Try to get an XImage for img->pixmep. */ | |
8643 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8644 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8645 | if (ximg) | |
8646 | { | |
8647 | int x, y; | |
8648 | ||
8649 | /* Initialize the color table. */ | |
8650 | init_color_table (); | |
8651 | ||
8652 | /* For each pixel of the image, look its color up in the | |
8653 | color table. After having done so, the color table will | |
8654 | contain an entry for each color used by the image. */ | |
8655 | for (y = 0; y < img->height; ++y) | |
8656 | for (x = 0; x < img->width; ++x) | |
8657 | { | |
8658 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8659 | lookup_pixel_color (f, pixel); | |
8660 | } | |
8661 | ||
8662 | /* Record colors in the image. Free color table and XImage. */ | |
8663 | #ifdef COLOR_TABLE_SUPPORT | |
8664 | img->colors = colors_in_color_table (&img->ncolors); | |
8665 | free_color_table (); | |
8666 | #endif | |
8667 | XDestroyImage (ximg); | |
8668 | ||
8669 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8670 | here, we get a BadAccess later in x_clear_image when | |
8671 | freeing the colors. */ | |
8672 | /* We have allocated colors once, but Ghostscript has also | |
8673 | allocated colors on behalf of us. So, to get the | |
8674 | reference counts right, free them once. */ | |
8675 | if (img->ncolors) | |
8676 | x_free_colors (f, img->colors, img->ncolors); | |
8677 | #endif | |
8678 | } | |
8679 | else | |
8680 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8681 | img->spec, Qnil); | |
8682 | ||
8683 | UNBLOCK_INPUT; | |
8684 | } | |
8685 | #endif /* HAVE_X_WINDOWS */ | |
8686 | ||
8687 | /* Now that we have the pixmap, compute mask and transform the | |
8688 | image if requested. */ | |
8689 | BLOCK_INPUT; | |
8690 | postprocess_image (f, img); | |
8691 | UNBLOCK_INPUT; | |
8692 | } | |
8693 | ||
8694 | #endif /* HAVE_GHOSTSCRIPT */ | |
8695 | ||
8696 | \f | |
8697 | /*********************************************************************** | |
8698 | Tests | |
8699 | ***********************************************************************/ | |
8700 | ||
8701 | #if GLYPH_DEBUG | |
8702 | ||
a7ca3326 | 8703 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 8704 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 8705 | (Lisp_Object spec) |
4ef0d4d0 KS |
8706 | { |
8707 | return valid_image_p (spec) ? Qt : Qnil; | |
8708 | } | |
8709 | ||
8710 | ||
a7ca3326 | 8711 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 8712 | (Lisp_Object spec) |
4ef0d4d0 | 8713 | { |
13464394 | 8714 | ptrdiff_t id = -1; |
4ef0d4d0 KS |
8715 | |
8716 | if (valid_image_p (spec)) | |
8717 | id = lookup_image (SELECTED_FRAME (), spec); | |
8718 | ||
8719 | debug_print (spec); | |
8720 | return make_number (id); | |
8721 | } | |
8722 | ||
8723 | #endif /* GLYPH_DEBUG != 0 */ | |
8724 | ||
8725 | ||
8726 | /*********************************************************************** | |
8727 | Initialization | |
8728 | ***********************************************************************/ | |
8729 | ||
0855eb52 JB |
8730 | #ifdef HAVE_NTGUI |
8731 | /* Image types that rely on external libraries are loaded dynamically | |
8732 | if the library is available. */ | |
adac86db | 8733 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8734 | define_image_type (image_type, init_lib_fn (libraries)) |
8735 | #else | |
adac86db | 8736 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8737 | define_image_type (image_type, 1) |
0855eb52 JB |
8738 | #endif /* HAVE_NTGUI */ |
8739 | ||
8740 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8741 | doc: /* Initialize image library implementing image type TYPE. | |
8742 | Return non-nil if TYPE is a supported image type. | |
8743 | ||
8744 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8745 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
2e288d54 | 8746 | of `dynamic-library-alist', which see). */) |
5842a27b | 8747 | (Lisp_Object type, Lisp_Object libraries) |
0855eb52 | 8748 | { |
84d358f0 | 8749 | #ifdef HAVE_NTGUI |
0855eb52 | 8750 | /* Don't try to reload the library. */ |
4c4b566b | 8751 | Lisp_Object tested = Fassq (type, Vlibrary_cache); |
0855eb52 JB |
8752 | if (CONSP (tested)) |
8753 | return XCDR (tested); | |
84d358f0 | 8754 | #endif |
0855eb52 | 8755 | |
2f142cc5 JB |
8756 | /* Types pbm and xbm are built-in and always available. */ |
8757 | if (EQ (type, Qpbm) || EQ (type, Qxbm)) | |
8758 | return Qt; | |
8759 | ||
9e2a2647 | 8760 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8761 | if (EQ (type, Qxpm)) |
adac86db | 8762 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8763 | #endif |
8764 | ||
9e2a2647 | 8765 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8766 | if (EQ (type, Qjpeg)) |
adac86db | 8767 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8768 | #endif |
8769 | ||
9e2a2647 | 8770 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8771 | if (EQ (type, Qtiff)) |
adac86db | 8772 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8773 | #endif |
8774 | ||
9e2a2647 | 8775 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8776 | if (EQ (type, Qgif)) |
adac86db | 8777 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8778 | #endif |
8779 | ||
9e2a2647 | 8780 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8781 | if (EQ (type, Qpng)) |
adac86db | 8782 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8783 | #endif |
8784 | ||
4ab27a43 GM |
8785 | #if defined (HAVE_RSVG) |
8786 | if (EQ (type, Qsvg)) | |
8787 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
8788 | #endif | |
c21e6151 | 8789 | |
3de25479 | 8790 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 8791 | if (EQ (type, Qimagemagick)) |
2f142cc5 JB |
8792 | return CHECK_LIB_AVAILABLE (&imagemagick_type, init_imagemagick_functions, |
8793 | libraries); | |
3de25479 JV |
8794 | #endif |
8795 | ||
0855eb52 JB |
8796 | #ifdef HAVE_GHOSTSCRIPT |
8797 | if (EQ (type, Qpostscript)) | |
adac86db | 8798 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8799 | #endif |
8800 | ||
8801 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8802 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8803 | return Qnil; |
8804 | } | |
8805 | ||
4ef0d4d0 | 8806 | void |
d3da34e0 | 8807 | syms_of_image (void) |
4ef0d4d0 | 8808 | { |
6e6fc3fd RS |
8809 | /* Initialize this only once, since that's what we do with Vimage_types |
8810 | and they are supposed to be in sync. Initializing here gives correct | |
8811 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8812 | image_types = NULL; | |
8813 | ||
91af3942 | 8814 | /* Must be defined now because we're going to update it below, while |
0855eb52 | 8815 | defining the supported image types. */ |
29208e82 | 8816 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 8817 | doc: /* List of potentially supported image types. |
bbe6f2aa | 8818 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
8819 | To check whether it is really supported, use `image-type-available-p'. */); |
8820 | Vimage_types = Qnil; | |
8821 | ||
29208e82 | 8822 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
8823 | doc: /* Maximum size of images. |
8824 | Emacs will not load an image into memory if its pixel width or | |
8825 | pixel height exceeds this limit. | |
8826 | ||
8827 | If the value is an integer, it directly specifies the maximum | |
8828 | image height and width, measured in pixels. If it is a floating | |
8829 | point number, it specifies the maximum image height and width | |
8830 | as a ratio to the frame height and width. If the value is | |
8831 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8832 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8833 | ||
1100a63c | 8834 | DEFSYM (Qpbm, "pbm"); |
5fc9fdeb | 8835 | ADD_IMAGE_TYPE (Qpbm); |
7c4e3a32 | 8836 | |
1100a63c | 8837 | DEFSYM (Qxbm, "xbm"); |
5fc9fdeb | 8838 | ADD_IMAGE_TYPE (Qxbm); |
7c4e3a32 RS |
8839 | |
8840 | define_image_type (&xbm_type, 1); | |
8841 | define_image_type (&pbm_type, 1); | |
8842 | ||
1100a63c CY |
8843 | DEFSYM (Qcount, "count"); |
8844 | DEFSYM (Qextension_data, "extension-data"); | |
8845 | DEFSYM (Qdelay, "delay"); | |
8846 | ||
8847 | DEFSYM (QCascent, ":ascent"); | |
8848 | DEFSYM (QCmargin, ":margin"); | |
8849 | DEFSYM (QCrelief, ":relief"); | |
8850 | DEFSYM (QCconversion, ":conversion"); | |
8851 | DEFSYM (QCcolor_symbols, ":color-symbols"); | |
8852 | DEFSYM (QCheuristic_mask, ":heuristic-mask"); | |
8853 | DEFSYM (QCindex, ":index"); | |
8854 | DEFSYM (QCgeometry, ":geometry"); | |
8855 | DEFSYM (QCcrop, ":crop"); | |
8856 | DEFSYM (QCrotation, ":rotation"); | |
8857 | DEFSYM (QCmatrix, ":matrix"); | |
8858 | DEFSYM (QCcolor_adjustment, ":color-adjustment"); | |
8859 | DEFSYM (QCmask, ":mask"); | |
8860 | ||
8861 | DEFSYM (Qlaplace, "laplace"); | |
8862 | DEFSYM (Qemboss, "emboss"); | |
8863 | DEFSYM (Qedge_detection, "edge-detection"); | |
8864 | DEFSYM (Qheuristic, "heuristic"); | |
8865 | ||
8866 | DEFSYM (Qpostscript, "postscript"); | |
4ef0d4d0 | 8867 | #ifdef HAVE_GHOSTSCRIPT |
5fc9fdeb | 8868 | ADD_IMAGE_TYPE (Qpostscript); |
1100a63c CY |
8869 | DEFSYM (QCloader, ":loader"); |
8870 | DEFSYM (QCbounding_box, ":bounding-box"); | |
8871 | DEFSYM (QCpt_width, ":pt-width"); | |
8872 | DEFSYM (QCpt_height, ":pt-height"); | |
4ef0d4d0 KS |
8873 | #endif /* HAVE_GHOSTSCRIPT */ |
8874 | ||
5be1c984 | 8875 | #ifdef HAVE_NTGUI |
1100a63c | 8876 | DEFSYM (Qlibpng_version, "libpng-version"); |
0514b4be | 8877 | Fset (Qlibpng_version, |
5be1c984 | 8878 | #if HAVE_PNG |
0514b4be | 8879 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8880 | #else |
0514b4be | 8881 | make_number (-1) |
5be1c984 | 8882 | #endif |
0514b4be | 8883 | ); |
5be1c984 EZ |
8884 | #endif |
8885 | ||
9e2a2647 | 8886 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
1100a63c | 8887 | DEFSYM (Qxpm, "xpm"); |
5fc9fdeb | 8888 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8889 | #endif |
8890 | ||
9e2a2647 | 8891 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
1100a63c | 8892 | DEFSYM (Qjpeg, "jpeg"); |
5fc9fdeb | 8893 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8894 | #endif |
8895 | ||
9e2a2647 | 8896 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
1100a63c | 8897 | DEFSYM (Qtiff, "tiff"); |
5fc9fdeb | 8898 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8899 | #endif |
8900 | ||
9e2a2647 | 8901 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
1100a63c | 8902 | DEFSYM (Qgif, "gif"); |
5fc9fdeb | 8903 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8904 | #endif |
8905 | ||
9e2a2647 | 8906 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
1100a63c | 8907 | DEFSYM (Qpng, "png"); |
5fc9fdeb | 8908 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8909 | #endif |
8910 | ||
3de25479 | 8911 | #if defined (HAVE_IMAGEMAGICK) |
1100a63c | 8912 | DEFSYM (Qimagemagick, "imagemagick"); |
3de25479 JV |
8913 | ADD_IMAGE_TYPE (Qimagemagick); |
8914 | #endif | |
7574650a | 8915 | |
4ab27a43 | 8916 | #if defined (HAVE_RSVG) |
1100a63c | 8917 | DEFSYM (Qsvg, "svg"); |
5fc9fdeb JR |
8918 | ADD_IMAGE_TYPE (Qsvg); |
8919 | #ifdef HAVE_NTGUI | |
df23bf08 | 8920 | /* Other libraries used directly by svg code. */ |
1100a63c CY |
8921 | DEFSYM (Qgdk_pixbuf, "gdk-pixbuf"); |
8922 | DEFSYM (Qglib, "glib"); | |
8923 | DEFSYM (Qgobject, "gobject"); | |
5fc9fdeb JR |
8924 | #endif /* HAVE_NTGUI */ |
8925 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8926 | |
0855eb52 | 8927 | defsubr (&Sinit_image_library); |
7574650a | 8928 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8929 | defsubr (&Simagemagick_types); |
7574650a | 8930 | #endif |
4ef0d4d0 | 8931 | defsubr (&Sclear_image_cache); |
110683ad | 8932 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8933 | defsubr (&Simage_size); |
8934 | defsubr (&Simage_mask_p); | |
1546c559 | 8935 | defsubr (&Simage_metadata); |
4ef0d4d0 KS |
8936 | |
8937 | #if GLYPH_DEBUG | |
8938 | defsubr (&Simagep); | |
8939 | defsubr (&Slookup_image); | |
8940 | #endif | |
8941 | ||
29208e82 | 8942 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 8943 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 8944 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
8945 | A cross is always drawn on black & white displays. */); |
8946 | cross_disabled_images = 0; | |
8947 | ||
29208e82 | 8948 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 KS |
8949 | doc: /* List of directories to search for window system bitmap files. */); |
8950 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
8951 | ||
29208e82 | 8952 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
8953 | doc: /* Maximum time after which images are removed from the cache. |
8954 | When an image has not been displayed this many seconds, Emacs | |
8955 | automatically removes it from the image cache. If the cache contains | |
8956 | a large number of images, the actual eviction time may be shorter. | |
8957 | The value can also be nil, meaning the cache is never cleared. | |
8958 | ||
8959 | The function `clear-image-cache' disregards this variable. */); | |
8960 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 8961 | #ifdef HAVE_IMAGEMAGICK |
af008560 GM |
8962 | DEFVAR_INT ("imagemagick-render-type", imagemagick_render_type, |
8963 | doc: /* Integer indicating which ImageMagick rendering method to use. | |
8964 | The options are: | |
8965 | 0 -- the default method (pixel pushing) | |
8966 | 1 -- a newer method ("MagickExportImagePixels") that may perform | |
8967 | better (speed etc) in some cases, but has not been as thoroughly | |
8968 | tested with Emacs as the default method. This method requires | |
8969 | ImageMagick version 6.4.6 (approximately) or later. | |
8970 | */); | |
8971 | /* MagickExportImagePixels is in 6.4.6-9, but not 6.4.4-10. */ | |
8972 | imagemagick_render_type = 0; | |
7574650a | 8973 | #endif |
4ef0d4d0 | 8974 | |
4ef0d4d0 KS |
8975 | } |
8976 | ||
4ef0d4d0 | 8977 | void |
d3da34e0 | 8978 | init_image (void) |
4ef0d4d0 | 8979 | { |
4ef0d4d0 | 8980 | } |