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4ef0d4d0 | 1 | /* Functions for image support on window system. |
0b5538bd | 2 | Copyright (C) 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
8cabe764 | 3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
6678dc11 | 4 | Free Software Foundation, Inc. |
4ef0d4d0 KS |
5 | |
6 | This file is part of GNU Emacs. | |
7 | ||
8 | GNU Emacs is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 10 | the Free Software Foundation; either version 3, or (at your option) |
4ef0d4d0 KS |
11 | any later version. |
12 | ||
13 | GNU Emacs is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
4ef0d4d0 KS |
22 | |
23 | #include <config.h> | |
4ef0d4d0 KS |
24 | #include <stdio.h> |
25 | #include <math.h> | |
be8c4ce4 | 26 | #include <ctype.h> |
4ef0d4d0 KS |
27 | |
28 | #ifdef HAVE_UNISTD_H | |
29 | #include <unistd.h> | |
30 | #endif | |
31 | ||
32 | /* This makes the fields of a Display accessible, in Xlib header files. */ | |
33 | ||
34 | #define XLIB_ILLEGAL_ACCESS | |
35 | ||
36 | #include "lisp.h" | |
37 | #include "frame.h" | |
38 | #include "window.h" | |
39 | #include "dispextern.h" | |
40 | #include "blockinput.h" | |
41 | #include "systime.h" | |
42 | #include <epaths.h> | |
022af124 KH |
43 | #include "charset.h" |
44 | #include "coding.h" | |
4ef0d4d0 KS |
45 | |
46 | ||
47 | #ifdef HAVE_X_WINDOWS | |
48 | #include "xterm.h" | |
49 | #include <sys/types.h> | |
50 | #include <sys/stat.h> | |
51 | ||
52 | #define COLOR_TABLE_SUPPORT 1 | |
53 | ||
54 | typedef struct x_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
55 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) |
56 | #define NO_PIXMAP None | |
4ef0d4d0 KS |
57 | |
58 | #define RGB_PIXEL_COLOR unsigned long | |
59 | ||
9ecf6403 YM |
60 | #define PIX_MASK_RETAIN 0 |
61 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
62 | #endif /* HAVE_X_WINDOWS */ |
63 | ||
64 | ||
65 | #ifdef HAVE_NTGUI | |
66 | #include "w32term.h" | |
67 | ||
68 | /* W32_TODO : Color tables on W32. */ | |
69 | #undef COLOR_TABLE_SUPPORT | |
70 | ||
71 | typedef struct w32_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
72 | #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y) |
73 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
74 | |
75 | #define RGB_PIXEL_COLOR COLORREF | |
76 | ||
9ecf6403 YM |
77 | #define PIX_MASK_RETAIN 0 |
78 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
79 | |
80 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual | |
81 | #define x_defined_color w32_defined_color | |
82 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
83 | #endif /* HAVE_NTGUI */ | |
84 | ||
85 | ||
86 | #ifdef MAC_OS | |
87 | #include "macterm.h" | |
b15325b2 | 88 | #include <sys/stat.h> |
4ef0d4d0 KS |
89 | #ifndef MAC_OSX |
90 | #include <alloca.h> | |
b15325b2 | 91 | #include <sys/param.h> |
4ef0d4d0 | 92 | #endif |
d45b2e9e | 93 | #if TARGET_API_MAC_CARBON |
4ef0d4d0 KS |
94 | #ifdef MAC_OSX |
95 | #include <QuickTime/QuickTime.h> | |
d45b2e9e YM |
96 | #else /* not MAC_OSX */ |
97 | #include <QuickTime.h> | |
98 | #endif /* not MAC_OSX */ | |
99 | #else /* not TARGET_API_MAC_CARBON */ | |
4ef0d4d0 KS |
100 | #include <Windows.h> |
101 | #include <Gestalt.h> | |
102 | #include <TextUtils.h> | |
b15325b2 ST |
103 | #include <ImageCompression.h> |
104 | #include <QuickTimeComponents.h> | |
d45b2e9e | 105 | #endif /* not TARGET_API_MAC_CARBON */ |
4ef0d4d0 KS |
106 | |
107 | /* MAC_TODO : Color tables on Mac. */ | |
108 | #undef COLOR_TABLE_SUPPORT | |
109 | ||
4ef0d4d0 KS |
110 | #define ZPixmap 0 /* arbitrary */ |
111 | typedef struct mac_bitmap_record Bitmap_Record; | |
112 | ||
4ef0d4d0 KS |
113 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) |
114 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
115 | |
116 | #define RGB_PIXEL_COLOR unsigned long | |
117 | ||
9ecf6403 YM |
118 | /* A black pixel in a mask bitmap/pixmap means ``draw a source |
119 | pixel''. A white pixel means ``retain the current pixel''. */ | |
120 | #define PIX_MASK_DRAW RGB_TO_ULONG(0,0,0) | |
121 | #define PIX_MASK_RETAIN RGB_TO_ULONG(255,255,255) | |
122 | ||
4ef0d4d0 KS |
123 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual |
124 | #define x_defined_color mac_defined_color | |
125 | #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes) | |
4ef0d4d0 KS |
126 | |
127 | #endif /* MAC_OS */ | |
128 | ||
129 | ||
130 | /* Search path for bitmap files. */ | |
131 | ||
132 | Lisp_Object Vx_bitmap_file_path; | |
133 | ||
134 | ||
135 | static void x_disable_image P_ ((struct frame *, struct image *)); | |
136 | static void x_edge_detection P_ ((struct frame *, struct image *, Lisp_Object, | |
137 | Lisp_Object)); | |
138 | ||
139 | static void init_color_table P_ ((void)); | |
140 | static unsigned long lookup_rgb_color P_ ((struct frame *f, int r, int g, int b)); | |
141 | #ifdef COLOR_TABLE_SUPPORT | |
142 | static void free_color_table P_ ((void)); | |
143 | static unsigned long *colors_in_color_table P_ ((int *n)); | |
144 | static unsigned long lookup_pixel_color P_ ((struct frame *f, unsigned long p)); | |
145 | #endif | |
146 | ||
147 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
148 | id, which is just an int that this section returns. Bitmaps are | |
149 | reference counted so they can be shared among frames. | |
150 | ||
151 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
152 | be used to indicate no bitmap. | |
153 | ||
154 | If you use x_create_bitmap_from_data, then you must keep track of | |
155 | the bitmaps yourself. That is, creating a bitmap from the same | |
156 | data more than once will not be caught. */ | |
157 | ||
158 | #ifdef MAC_OS | |
159 | ||
160 | static XImagePtr | |
161 | XGetImage (display, pixmap, x, y, width, height, plane_mask, format) | |
162 | Display *display; /* not used */ | |
163 | Pixmap pixmap; | |
164 | int x, y; /* not used */ | |
165 | unsigned int width, height; /* not used */ | |
166 | unsigned long plane_mask; /* not used */ | |
167 | int format; /* not used */ | |
168 | { | |
169 | #if GLYPH_DEBUG | |
170 | xassert (x == 0 && y == 0); | |
171 | { | |
172 | Rect ri, rp; | |
173 | SetRect (&ri, 0, 0, width, height); | |
174 | xassert (EqualRect (&ri, GetPixBounds (GetGWorldPixMap (pixmap), &rp))); | |
175 | } | |
176 | xassert (! (pixelsLocked & GetPixelsState (GetGWorldPixMap (pixmap)))); | |
177 | #endif | |
178 | ||
179 | LockPixels (GetGWorldPixMap (pixmap)); | |
180 | ||
181 | return pixmap; | |
182 | } | |
183 | ||
184 | static void | |
185 | XPutPixel (ximage, x, y, pixel) | |
186 | XImagePtr ximage; | |
187 | int x, y; | |
188 | unsigned long pixel; | |
189 | { | |
9ecf6403 YM |
190 | PixMapHandle pixmap = GetGWorldPixMap (ximage); |
191 | short depth = GetPixDepth (pixmap); | |
192 | ||
c7fea325 | 193 | #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING |
9ecf6403 YM |
194 | if (depth == 32) |
195 | { | |
196 | char *base_addr = GetPixBaseAddr (pixmap); | |
197 | short row_bytes = GetPixRowBytes (pixmap); | |
198 | ||
4cdffedf | 199 | ((unsigned long *) (base_addr + y * row_bytes))[x] = 0xff000000 | pixel; |
9ecf6403 | 200 | } |
c7fea325 YM |
201 | else |
202 | #endif | |
1caa0b53 | 203 | if (depth == 1) |
9ecf6403 YM |
204 | { |
205 | char *base_addr = GetPixBaseAddr (pixmap); | |
206 | short row_bytes = GetPixRowBytes (pixmap); | |
207 | ||
208 | if (pixel == PIX_MASK_DRAW) | |
209 | base_addr[y * row_bytes + x / 8] |= (1 << 7) >> (x & 7); | |
210 | else | |
211 | base_addr[y * row_bytes + x / 8] &= ~((1 << 7) >> (x & 7)); | |
212 | } | |
213 | else | |
214 | { | |
215 | CGrafPtr old_port; | |
216 | GDHandle old_gdh; | |
217 | RGBColor color; | |
218 | ||
219 | GetGWorld (&old_port, &old_gdh); | |
220 | SetGWorld (ximage, NULL); | |
4ef0d4d0 | 221 | |
9ecf6403 YM |
222 | color.red = RED16_FROM_ULONG (pixel); |
223 | color.green = GREEN16_FROM_ULONG (pixel); | |
224 | color.blue = BLUE16_FROM_ULONG (pixel); | |
4ef0d4d0 | 225 | |
9ecf6403 | 226 | SetCPixel (x, y, &color); |
2a316a84 | 227 | |
9ecf6403 YM |
228 | SetGWorld (old_port, old_gdh); |
229 | } | |
4ef0d4d0 KS |
230 | } |
231 | ||
232 | static unsigned long | |
233 | XGetPixel (ximage, x, y) | |
234 | XImagePtr ximage; | |
235 | int x, y; | |
236 | { | |
9ecf6403 YM |
237 | PixMapHandle pixmap = GetGWorldPixMap (ximage); |
238 | short depth = GetPixDepth (pixmap); | |
4ef0d4d0 | 239 | |
c7fea325 | 240 | #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING |
9ecf6403 YM |
241 | if (depth == 32) |
242 | { | |
243 | char *base_addr = GetPixBaseAddr (pixmap); | |
244 | short row_bytes = GetPixRowBytes (pixmap); | |
245 | ||
4cdffedf | 246 | return ((unsigned long *) (base_addr + y * row_bytes))[x] & 0x00ffffff; |
9ecf6403 | 247 | } |
c7fea325 YM |
248 | else |
249 | #endif | |
250 | if (depth == 1) | |
9ecf6403 YM |
251 | { |
252 | char *base_addr = GetPixBaseAddr (pixmap); | |
253 | short row_bytes = GetPixRowBytes (pixmap); | |
4ef0d4d0 | 254 | |
9ecf6403 YM |
255 | if (base_addr[y * row_bytes + x / 8] & (1 << (~x & 7))) |
256 | return PIX_MASK_DRAW; | |
257 | else | |
258 | return PIX_MASK_RETAIN; | |
259 | } | |
260 | else | |
261 | { | |
262 | CGrafPtr old_port; | |
263 | GDHandle old_gdh; | |
264 | RGBColor color; | |
2a316a84 | 265 | |
9ecf6403 YM |
266 | GetGWorld (&old_port, &old_gdh); |
267 | SetGWorld (ximage, NULL); | |
268 | ||
269 | GetCPixel (x, y, &color); | |
270 | ||
271 | SetGWorld (old_port, old_gdh); | |
272 | return RGB_TO_ULONG (color.red >> 8, color.green >> 8, color.blue >> 8); | |
273 | } | |
4ef0d4d0 KS |
274 | } |
275 | ||
276 | static void | |
277 | XDestroyImage (ximg) | |
278 | XImagePtr ximg; | |
279 | { | |
280 | UnlockPixels (GetGWorldPixMap (ximg)); | |
281 | } | |
c7fea325 YM |
282 | |
283 | #if USE_CG_DRAWING | |
284 | static CGImageRef | |
285 | mac_create_cg_image_from_image (f, img) | |
286 | struct frame *f; | |
287 | struct image *img; | |
288 | { | |
289 | Pixmap mask; | |
290 | CGImageRef result = NULL; | |
291 | ||
292 | BLOCK_INPUT; | |
293 | if (img->mask) | |
294 | mask = img->mask; | |
295 | else | |
296 | { | |
297 | mask = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
298 | img->width, img->height, 1); | |
299 | if (mask) | |
300 | { | |
301 | CGrafPtr old_port; | |
302 | GDHandle old_gdh; | |
303 | Rect r; | |
304 | ||
305 | GetGWorld (&old_port, &old_gdh); | |
306 | SetGWorld (mask, NULL); | |
307 | BackColor (blackColor); /* Don't mask. */ | |
308 | SetRect (&r, 0, 0, img->width, img->height); | |
309 | EraseRect (&r); | |
310 | SetGWorld (old_port, old_gdh); | |
311 | } | |
312 | } | |
313 | if (mask) | |
314 | { | |
315 | CreateCGImageFromPixMaps (GetGWorldPixMap (img->pixmap), | |
316 | GetGWorldPixMap (mask), &result); | |
317 | if (mask != img->mask) | |
318 | XFreePixmap (FRAME_X_DISPLAY (f), mask); | |
319 | } | |
320 | UNBLOCK_INPUT; | |
321 | ||
322 | return result; | |
323 | } | |
324 | #endif /* USE_CG_DRAWING */ | |
b0da69a7 | 325 | #endif /* MAC_OS */ |
4ef0d4d0 KS |
326 | |
327 | ||
328 | /* Functions to access the contents of a bitmap, given an id. */ | |
329 | ||
330 | int | |
331 | x_bitmap_height (f, id) | |
332 | FRAME_PTR f; | |
333 | int id; | |
334 | { | |
335 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
336 | } | |
337 | ||
338 | int | |
339 | x_bitmap_width (f, id) | |
340 | FRAME_PTR f; | |
341 | int id; | |
342 | { | |
343 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
344 | } | |
345 | ||
346 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
347 | int | |
348 | x_bitmap_pixmap (f, id) | |
349 | FRAME_PTR f; | |
350 | int id; | |
351 | { | |
352 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
353 | } | |
354 | #endif | |
355 | ||
356 | #ifdef HAVE_X_WINDOWS | |
357 | int | |
358 | x_bitmap_mask (f, id) | |
359 | FRAME_PTR f; | |
360 | int id; | |
361 | { | |
362 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
363 | } | |
364 | #endif | |
365 | ||
366 | /* Allocate a new bitmap record. Returns index of new record. */ | |
367 | ||
368 | static int | |
369 | x_allocate_bitmap_record (f) | |
370 | FRAME_PTR f; | |
371 | { | |
372 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
373 | int i; | |
374 | ||
375 | if (dpyinfo->bitmaps == NULL) | |
376 | { | |
377 | dpyinfo->bitmaps_size = 10; | |
378 | dpyinfo->bitmaps | |
379 | = (Bitmap_Record *) xmalloc (dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
380 | dpyinfo->bitmaps_last = 1; | |
381 | return 1; | |
382 | } | |
383 | ||
384 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) | |
385 | return ++dpyinfo->bitmaps_last; | |
386 | ||
387 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
388 | if (dpyinfo->bitmaps[i].refcount == 0) | |
389 | return i + 1; | |
390 | ||
391 | dpyinfo->bitmaps_size *= 2; | |
392 | dpyinfo->bitmaps | |
393 | = (Bitmap_Record *) xrealloc (dpyinfo->bitmaps, | |
394 | dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
395 | return ++dpyinfo->bitmaps_last; | |
396 | } | |
397 | ||
398 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
399 | ||
400 | void | |
401 | x_reference_bitmap (f, id) | |
402 | FRAME_PTR f; | |
403 | int id; | |
404 | { | |
405 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
406 | } | |
407 | ||
408 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
409 | ||
410 | int | |
411 | x_create_bitmap_from_data (f, bits, width, height) | |
412 | struct frame *f; | |
413 | char *bits; | |
414 | unsigned int width, height; | |
415 | { | |
416 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
417 | int id; | |
418 | ||
419 | #ifdef HAVE_X_WINDOWS | |
420 | Pixmap bitmap; | |
421 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
422 | bits, width, height); | |
423 | if (! bitmap) | |
424 | return -1; | |
425 | #endif /* HAVE_X_WINDOWS */ | |
426 | ||
427 | #ifdef HAVE_NTGUI | |
428 | Pixmap bitmap; | |
429 | bitmap = CreateBitmap (width, height, | |
430 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
431 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
432 | bits); | |
433 | if (! bitmap) | |
434 | return -1; | |
435 | #endif /* HAVE_NTGUI */ | |
436 | ||
437 | #ifdef MAC_OS | |
438 | /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */ | |
439 | if (width % 16 != 0) | |
440 | return -1; | |
441 | #endif | |
442 | ||
443 | id = x_allocate_bitmap_record (f); | |
444 | #ifdef MAC_OS | |
445 | dpyinfo->bitmaps[id - 1].bitmap_data = (char *) xmalloc (height * width); | |
4ef0d4d0 KS |
446 | bcopy (bits, dpyinfo->bitmaps[id - 1].bitmap_data, height * width); |
447 | #endif /* MAC_OS */ | |
448 | ||
449 | dpyinfo->bitmaps[id - 1].file = NULL; | |
450 | dpyinfo->bitmaps[id - 1].height = height; | |
451 | dpyinfo->bitmaps[id - 1].width = width; | |
452 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
453 | ||
454 | #ifdef HAVE_X_WINDOWS | |
455 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
456 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
457 | dpyinfo->bitmaps[id - 1].depth = 1; | |
458 | #endif /* HAVE_X_WINDOWS */ | |
459 | ||
460 | #ifdef HAVE_NTGUI | |
461 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
462 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
463 | dpyinfo->bitmaps[id - 1].depth = 1; | |
464 | #endif /* HAVE_NTGUI */ | |
465 | ||
466 | return id; | |
467 | } | |
468 | ||
469 | /* Create bitmap from file FILE for frame F. */ | |
470 | ||
471 | int | |
472 | x_create_bitmap_from_file (f, file) | |
473 | struct frame *f; | |
474 | Lisp_Object file; | |
475 | { | |
476 | #ifdef MAC_OS | |
477 | return -1; /* MAC_TODO : bitmap support */ | |
478 | #endif /* MAC_OS */ | |
479 | ||
480 | #ifdef HAVE_NTGUI | |
481 | return -1; /* W32_TODO : bitmap support */ | |
482 | #endif /* HAVE_NTGUI */ | |
483 | ||
484 | #ifdef HAVE_X_WINDOWS | |
485 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
486 | unsigned int width, height; | |
487 | Pixmap bitmap; | |
488 | int xhot, yhot, result, id; | |
489 | Lisp_Object found; | |
490 | int fd; | |
491 | char *filename; | |
492 | ||
493 | /* Look for an existing bitmap with the same name. */ | |
494 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
495 | { | |
496 | if (dpyinfo->bitmaps[id].refcount | |
497 | && dpyinfo->bitmaps[id].file | |
498 | && !strcmp (dpyinfo->bitmaps[id].file, (char *) SDATA (file))) | |
499 | { | |
500 | ++dpyinfo->bitmaps[id].refcount; | |
501 | return id + 1; | |
502 | } | |
503 | } | |
504 | ||
505 | /* Search bitmap-file-path for the file, if appropriate. */ | |
506 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
507 | if (fd < 0) | |
508 | return -1; | |
509 | emacs_close (fd); | |
510 | ||
511 | filename = (char *) SDATA (found); | |
512 | ||
513 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
514 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
515 | if (result != BitmapSuccess) | |
516 | return -1; | |
517 | ||
518 | id = x_allocate_bitmap_record (f); | |
519 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
520 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
521 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
522 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
523 | dpyinfo->bitmaps[id - 1].depth = 1; | |
524 | dpyinfo->bitmaps[id - 1].height = height; | |
525 | dpyinfo->bitmaps[id - 1].width = width; | |
526 | strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file)); | |
527 | ||
528 | return id; | |
529 | #endif /* HAVE_X_WINDOWS */ | |
530 | } | |
531 | ||
532 | /* Free bitmap B. */ | |
533 | ||
534 | static void | |
65342ae3 | 535 | free_bitmap_record (dpyinfo, bm) |
4ef0d4d0 KS |
536 | Display_Info *dpyinfo; |
537 | Bitmap_Record *bm; | |
538 | { | |
539 | #ifdef HAVE_X_WINDOWS | |
540 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
541 | if (bm->have_mask) | |
542 | XFreePixmap (dpyinfo->display, bm->mask); | |
543 | #endif /* HAVE_X_WINDOWS */ | |
544 | ||
545 | #ifdef HAVE_NTGUI | |
546 | DeleteObject (bm->pixmap); | |
547 | #endif /* HAVE_NTGUI */ | |
548 | ||
549 | #ifdef MAC_OS | |
550 | xfree (bm->bitmap_data); /* Added ++kfs */ | |
551 | bm->bitmap_data = NULL; | |
552 | #endif /* MAC_OS */ | |
553 | ||
554 | if (bm->file) | |
555 | { | |
556 | xfree (bm->file); | |
557 | bm->file = NULL; | |
558 | } | |
559 | } | |
560 | ||
561 | /* Remove reference to bitmap with id number ID. */ | |
562 | ||
563 | void | |
564 | x_destroy_bitmap (f, id) | |
565 | FRAME_PTR f; | |
566 | int id; | |
567 | { | |
568 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
569 | ||
570 | if (id > 0) | |
571 | { | |
572 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
573 | ||
574 | if (--bm->refcount == 0) | |
575 | { | |
576 | BLOCK_INPUT; | |
65342ae3 | 577 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
578 | UNBLOCK_INPUT; |
579 | } | |
580 | } | |
581 | } | |
582 | ||
583 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
584 | ||
585 | void | |
586 | x_destroy_all_bitmaps (dpyinfo) | |
587 | Display_Info *dpyinfo; | |
588 | { | |
589 | int i; | |
590 | Bitmap_Record *bm = dpyinfo->bitmaps; | |
591 | ||
592 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
593 | if (bm->refcount > 0) | |
65342ae3 | 594 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
595 | |
596 | dpyinfo->bitmaps_last = 0; | |
597 | } | |
598 | ||
599 | ||
600 | #ifdef HAVE_X_WINDOWS | |
601 | ||
602 | /* Useful functions defined in the section | |
603 | `Image type independent image structures' below. */ | |
604 | ||
6ac3c7bb KS |
605 | static unsigned long four_corners_best P_ ((XImagePtr ximg, |
606 | int *corners, | |
607 | unsigned long width, | |
4ef0d4d0 KS |
608 | unsigned long height)); |
609 | ||
610 | static int x_create_x_image_and_pixmap P_ ((struct frame *f, int width, int height, | |
611 | int depth, XImagePtr *ximg, | |
612 | Pixmap *pixmap)); | |
613 | ||
614 | static void x_destroy_x_image P_ ((XImagePtr ximg)); | |
615 | ||
616 | ||
617 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
618 | It's nicer with some borders in this context */ | |
619 | ||
620 | int | |
621 | x_create_bitmap_mask (f, id) | |
622 | struct frame *f; | |
623 | int id; | |
624 | { | |
625 | Pixmap pixmap, mask; | |
626 | XImagePtr ximg, mask_img; | |
627 | unsigned long width, height; | |
628 | int result; | |
629 | unsigned long bg; | |
630 | unsigned long x, y, xp, xm, yp, ym; | |
631 | GC gc; | |
632 | ||
633 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
634 | ||
635 | if (!(id > 0)) | |
636 | return -1; | |
637 | ||
638 | pixmap = x_bitmap_pixmap (f, id); | |
639 | width = x_bitmap_width (f, id); | |
640 | height = x_bitmap_height (f, id); | |
641 | ||
642 | BLOCK_INPUT; | |
643 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
644 | ~0, ZPixmap); | |
645 | ||
646 | if (!ximg) | |
647 | { | |
648 | UNBLOCK_INPUT; | |
649 | return -1; | |
650 | } | |
651 | ||
652 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
653 | ||
654 | UNBLOCK_INPUT; | |
655 | if (!result) | |
656 | { | |
657 | XDestroyImage (ximg); | |
658 | return -1; | |
659 | } | |
660 | ||
6ac3c7bb | 661 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
662 | |
663 | for (y = 0; y < ximg->height; ++y) | |
664 | { | |
665 | for (x = 0; x < ximg->width; ++x) | |
666 | { | |
667 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
668 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
669 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
670 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
671 | if (XGetPixel (ximg, x, y) == bg | |
672 | && XGetPixel (ximg, x, yp) == bg | |
673 | && XGetPixel (ximg, x, ym) == bg | |
674 | && XGetPixel (ximg, xp, y) == bg | |
675 | && XGetPixel (ximg, xp, yp) == bg | |
676 | && XGetPixel (ximg, xp, ym) == bg | |
677 | && XGetPixel (ximg, xm, y) == bg | |
678 | && XGetPixel (ximg, xm, yp) == bg | |
679 | && XGetPixel (ximg, xm, ym) == bg) | |
680 | XPutPixel (mask_img, x, y, 0); | |
681 | else | |
682 | XPutPixel (mask_img, x, y, 1); | |
683 | } | |
684 | } | |
685 | ||
686 | xassert (interrupt_input_blocked); | |
687 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); | |
688 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
689 | width, height); | |
690 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
691 | ||
692 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
693 | dpyinfo->bitmaps[id - 1].mask = mask; | |
694 | ||
695 | XDestroyImage (ximg); | |
696 | x_destroy_x_image (mask_img); | |
697 | ||
698 | return 0; | |
699 | } | |
700 | ||
701 | #endif /* HAVE_X_WINDOWS */ | |
702 | ||
703 | ||
704 | /*********************************************************************** | |
705 | Image types | |
706 | ***********************************************************************/ | |
707 | ||
708 | /* Value is the number of elements of vector VECTOR. */ | |
709 | ||
710 | #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR)) | |
711 | ||
712 | /* List of supported image types. Use define_image_type to add new | |
713 | types. Use lookup_image_type to find a type for a given symbol. */ | |
714 | ||
715 | static struct image_type *image_types; | |
716 | ||
0855eb52 JB |
717 | /* A list of symbols, one for each supported image type. */ |
718 | ||
719 | Lisp_Object Vimage_types; | |
720 | ||
2a611c1a JB |
721 | /* An alist of image types and libraries that implement the type. */ |
722 | ||
723 | Lisp_Object Vimage_library_alist; | |
724 | ||
0855eb52 JB |
725 | /* Cache for delayed-loading image types. */ |
726 | ||
727 | static Lisp_Object Vimage_type_cache; | |
728 | ||
4ef0d4d0 KS |
729 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ |
730 | ||
731 | Lisp_Object Qxbm; | |
732 | ||
733 | /* Keywords. */ | |
734 | ||
735 | extern Lisp_Object QCwidth, QCheight, QCforeground, QCbackground, QCfile; | |
e047f448 | 736 | extern Lisp_Object QCdata, QCtype; |
e1dfec15 | 737 | extern Lisp_Object Qcenter; |
e047f448 | 738 | Lisp_Object QCascent, QCmargin, QCrelief, Qcount; |
4ef0d4d0 KS |
739 | Lisp_Object QCconversion, QCcolor_symbols, QCheuristic_mask; |
740 | Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask; | |
741 | ||
742 | /* Other symbols. */ | |
743 | ||
744 | Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; | |
4ef0d4d0 KS |
745 | |
746 | /* Time in seconds after which images should be removed from the cache | |
747 | if not displayed. */ | |
748 | ||
749 | Lisp_Object Vimage_cache_eviction_delay; | |
750 | ||
751 | /* Function prototypes. */ | |
752 | ||
0855eb52 | 753 | static Lisp_Object define_image_type P_ ((struct image_type *type, int loaded)); |
4ef0d4d0 KS |
754 | static struct image_type *lookup_image_type P_ ((Lisp_Object symbol)); |
755 | static void image_error P_ ((char *format, Lisp_Object, Lisp_Object)); | |
756 | static void x_laplace P_ ((struct frame *, struct image *)); | |
757 | static void x_emboss P_ ((struct frame *, struct image *)); | |
758 | static int x_build_heuristic_mask P_ ((struct frame *, struct image *, | |
759 | Lisp_Object)); | |
760 | ||
0855eb52 JB |
761 | #define CACHE_IMAGE_TYPE(type, status) \ |
762 | do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0) | |
763 | ||
764 | #define ADD_IMAGE_TYPE(type) \ | |
765 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
766 | |
767 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 768 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 769 | |
0855eb52 JB |
770 | static Lisp_Object |
771 | define_image_type (type, loaded) | |
4ef0d4d0 | 772 | struct image_type *type; |
0855eb52 | 773 | int loaded; |
4ef0d4d0 | 774 | { |
0855eb52 JB |
775 | Lisp_Object success; |
776 | ||
777 | if (!loaded) | |
778 | success = Qnil; | |
779 | else | |
780 | { | |
781 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
782 | The initialized data segment is read-only. */ | |
783 | struct image_type *p = (struct image_type *) xmalloc (sizeof *p); | |
784 | bcopy (type, p, sizeof *p); | |
785 | p->next = image_types; | |
786 | image_types = p; | |
787 | success = Qt; | |
788 | } | |
789 | ||
adac86db | 790 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 791 | return success; |
4ef0d4d0 KS |
792 | } |
793 | ||
794 | ||
795 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
796 | structure. Value is null if SYMBOL is not a known image type. */ | |
797 | ||
798 | static INLINE struct image_type * | |
799 | lookup_image_type (symbol) | |
800 | Lisp_Object symbol; | |
801 | { | |
802 | struct image_type *type; | |
803 | ||
803aac3e | 804 | /* We must initialize the image-type if it hasn't been already. */ |
2a611c1a | 805 | if (NILP (Finit_image_library (symbol, Vimage_library_alist))) |
803aac3e MB |
806 | return 0; /* unimplemented */ |
807 | ||
4ef0d4d0 KS |
808 | for (type = image_types; type; type = type->next) |
809 | if (EQ (symbol, *type->type)) | |
810 | break; | |
811 | ||
812 | return type; | |
813 | } | |
814 | ||
815 | ||
816 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
817 | valid image specification is a list whose car is the symbol | |
818 | `image', and whose rest is a property list. The property list must | |
819 | contain a value for key `:type'. That value must be the name of a | |
820 | supported image type. The rest of the property list depends on the | |
821 | image type. */ | |
822 | ||
823 | int | |
824 | valid_image_p (object) | |
825 | Lisp_Object object; | |
826 | { | |
827 | int valid_p = 0; | |
828 | ||
829 | if (IMAGEP (object)) | |
830 | { | |
831 | Lisp_Object tem; | |
832 | ||
833 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
834 | if (EQ (XCAR (tem), QCtype)) | |
835 | { | |
836 | tem = XCDR (tem); | |
837 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
838 | { | |
839 | struct image_type *type; | |
840 | type = lookup_image_type (XCAR (tem)); | |
841 | if (type) | |
842 | valid_p = type->valid_p (object); | |
843 | } | |
844 | ||
845 | break; | |
846 | } | |
847 | } | |
848 | ||
849 | return valid_p; | |
850 | } | |
851 | ||
852 | ||
853 | /* Log error message with format string FORMAT and argument ARG. | |
854 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
855 | good idea because this would interrupt redisplay, and the error | |
856 | message display would lead to another redisplay. This function | |
857 | therefore simply displays a message. */ | |
858 | ||
859 | static void | |
860 | image_error (format, arg1, arg2) | |
861 | char *format; | |
862 | Lisp_Object arg1, arg2; | |
863 | { | |
864 | add_to_log (format, arg1, arg2); | |
865 | } | |
866 | ||
867 | ||
868 | \f | |
869 | /*********************************************************************** | |
870 | Image specifications | |
871 | ***********************************************************************/ | |
872 | ||
873 | enum image_value_type | |
874 | { | |
875 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
876 | IMAGE_STRING_VALUE, | |
877 | IMAGE_STRING_OR_NIL_VALUE, | |
878 | IMAGE_SYMBOL_VALUE, | |
879 | IMAGE_POSITIVE_INTEGER_VALUE, | |
880 | IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, | |
881 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, | |
882 | IMAGE_ASCENT_VALUE, | |
883 | IMAGE_INTEGER_VALUE, | |
884 | IMAGE_FUNCTION_VALUE, | |
885 | IMAGE_NUMBER_VALUE, | |
886 | IMAGE_BOOL_VALUE | |
887 | }; | |
888 | ||
889 | /* Structure used when parsing image specifications. */ | |
890 | ||
891 | struct image_keyword | |
892 | { | |
893 | /* Name of keyword. */ | |
894 | char *name; | |
895 | ||
896 | /* The type of value allowed. */ | |
897 | enum image_value_type type; | |
898 | ||
899 | /* Non-zero means key must be present. */ | |
900 | int mandatory_p; | |
901 | ||
902 | /* Used to recognize duplicate keywords in a property list. */ | |
903 | int count; | |
904 | ||
905 | /* The value that was found. */ | |
906 | Lisp_Object value; | |
907 | }; | |
908 | ||
909 | ||
910 | static int parse_image_spec P_ ((Lisp_Object, struct image_keyword *, | |
911 | int, Lisp_Object)); | |
912 | static Lisp_Object image_spec_value P_ ((Lisp_Object, Lisp_Object, int *)); | |
913 | ||
914 | ||
915 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
916 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
917 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
918 | image_keywords structures of size NKEYWORDS describing other | |
919 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
920 | ||
921 | static int | |
922 | parse_image_spec (spec, keywords, nkeywords, type) | |
923 | Lisp_Object spec; | |
924 | struct image_keyword *keywords; | |
925 | int nkeywords; | |
926 | Lisp_Object type; | |
927 | { | |
928 | int i; | |
929 | Lisp_Object plist; | |
930 | ||
931 | if (!IMAGEP (spec)) | |
932 | return 0; | |
933 | ||
934 | plist = XCDR (spec); | |
935 | while (CONSP (plist)) | |
936 | { | |
937 | Lisp_Object key, value; | |
938 | ||
939 | /* First element of a pair must be a symbol. */ | |
940 | key = XCAR (plist); | |
941 | plist = XCDR (plist); | |
942 | if (!SYMBOLP (key)) | |
943 | return 0; | |
944 | ||
945 | /* There must follow a value. */ | |
946 | if (!CONSP (plist)) | |
947 | return 0; | |
948 | value = XCAR (plist); | |
949 | plist = XCDR (plist); | |
950 | ||
951 | /* Find key in KEYWORDS. Error if not found. */ | |
952 | for (i = 0; i < nkeywords; ++i) | |
953 | if (strcmp (keywords[i].name, SDATA (SYMBOL_NAME (key))) == 0) | |
954 | break; | |
955 | ||
956 | if (i == nkeywords) | |
957 | continue; | |
958 | ||
959 | /* Record that we recognized the keyword. If a keywords | |
960 | was found more than once, it's an error. */ | |
961 | keywords[i].value = value; | |
962 | ++keywords[i].count; | |
963 | ||
964 | if (keywords[i].count > 1) | |
965 | return 0; | |
966 | ||
967 | /* Check type of value against allowed type. */ | |
968 | switch (keywords[i].type) | |
969 | { | |
970 | case IMAGE_STRING_VALUE: | |
971 | if (!STRINGP (value)) | |
972 | return 0; | |
973 | break; | |
974 | ||
975 | case IMAGE_STRING_OR_NIL_VALUE: | |
976 | if (!STRINGP (value) && !NILP (value)) | |
977 | return 0; | |
978 | break; | |
979 | ||
980 | case IMAGE_SYMBOL_VALUE: | |
981 | if (!SYMBOLP (value)) | |
982 | return 0; | |
983 | break; | |
984 | ||
985 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
986 | if (!INTEGERP (value) || XINT (value) <= 0) | |
987 | return 0; | |
988 | break; | |
989 | ||
990 | case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR: | |
991 | if (INTEGERP (value) && XINT (value) >= 0) | |
992 | break; | |
993 | if (CONSP (value) | |
994 | && INTEGERP (XCAR (value)) && INTEGERP (XCDR (value)) | |
995 | && XINT (XCAR (value)) >= 0 && XINT (XCDR (value)) >= 0) | |
996 | break; | |
997 | return 0; | |
998 | ||
999 | case IMAGE_ASCENT_VALUE: | |
1000 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
1001 | break; | |
1002 | else if (INTEGERP (value) | |
1003 | && XINT (value) >= 0 | |
1004 | && XINT (value) <= 100) | |
1005 | break; | |
1006 | return 0; | |
1007 | ||
1008 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
1009 | if (!INTEGERP (value) || XINT (value) < 0) | |
1010 | return 0; | |
1011 | break; | |
1012 | ||
1013 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
1014 | break; | |
1015 | ||
1016 | case IMAGE_FUNCTION_VALUE: | |
1017 | value = indirect_function (value); | |
1018 | if (SUBRP (value) | |
1019 | || COMPILEDP (value) | |
1020 | || (CONSP (value) && EQ (XCAR (value), Qlambda))) | |
1021 | break; | |
1022 | return 0; | |
1023 | ||
1024 | case IMAGE_NUMBER_VALUE: | |
1025 | if (!INTEGERP (value) && !FLOATP (value)) | |
1026 | return 0; | |
1027 | break; | |
1028 | ||
1029 | case IMAGE_INTEGER_VALUE: | |
1030 | if (!INTEGERP (value)) | |
1031 | return 0; | |
1032 | break; | |
1033 | ||
1034 | case IMAGE_BOOL_VALUE: | |
1035 | if (!NILP (value) && !EQ (value, Qt)) | |
1036 | return 0; | |
1037 | break; | |
1038 | ||
1039 | default: | |
1040 | abort (); | |
1041 | break; | |
1042 | } | |
1043 | ||
1044 | if (EQ (key, QCtype) && !EQ (type, value)) | |
1045 | return 0; | |
1046 | } | |
1047 | ||
1048 | /* Check that all mandatory fields are present. */ | |
1049 | for (i = 0; i < nkeywords; ++i) | |
1050 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
1051 | return 0; | |
1052 | ||
1053 | return NILP (plist); | |
1054 | } | |
1055 | ||
1056 | ||
1057 | /* Return the value of KEY in image specification SPEC. Value is nil | |
1058 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
1059 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
1060 | ||
1061 | static Lisp_Object | |
1062 | image_spec_value (spec, key, found) | |
1063 | Lisp_Object spec, key; | |
1064 | int *found; | |
1065 | { | |
1066 | Lisp_Object tail; | |
1067 | ||
1068 | xassert (valid_image_p (spec)); | |
1069 | ||
1070 | for (tail = XCDR (spec); | |
1071 | CONSP (tail) && CONSP (XCDR (tail)); | |
1072 | tail = XCDR (XCDR (tail))) | |
1073 | { | |
1074 | if (EQ (XCAR (tail), key)) | |
1075 | { | |
1076 | if (found) | |
1077 | *found = 1; | |
1078 | return XCAR (XCDR (tail)); | |
1079 | } | |
1080 | } | |
1081 | ||
1082 | if (found) | |
1083 | *found = 0; | |
1084 | return Qnil; | |
1085 | } | |
1086 | ||
1087 | ||
1088 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
1089 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
1090 | PIXELS non-nil means return the size in pixels, otherwise return the | |
1091 | size in canonical character units. | |
1092 | FRAME is the frame on which the image will be displayed. FRAME nil | |
1093 | or omitted means use the selected frame. */) | |
1094 | (spec, pixels, frame) | |
1095 | Lisp_Object spec, pixels, frame; | |
1096 | { | |
1097 | Lisp_Object size; | |
1098 | ||
1099 | size = Qnil; | |
1100 | if (valid_image_p (spec)) | |
1101 | { | |
1102 | struct frame *f = check_x_frame (frame); | |
1103 | int id = lookup_image (f, spec); | |
1104 | struct image *img = IMAGE_FROM_ID (f, id); | |
1105 | int width = img->width + 2 * img->hmargin; | |
1106 | int height = img->height + 2 * img->vmargin; | |
1107 | ||
1108 | if (NILP (pixels)) | |
1109 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
1110 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
1111 | else | |
1112 | size = Fcons (make_number (width), make_number (height)); | |
1113 | } | |
1114 | else | |
1115 | error ("Invalid image specification"); | |
1116 | ||
1117 | return size; | |
1118 | } | |
1119 | ||
1120 | ||
1121 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
1122 | doc: /* Return t if image SPEC has a mask bitmap. | |
1123 | FRAME is the frame on which the image will be displayed. FRAME nil | |
1124 | or omitted means use the selected frame. */) | |
1125 | (spec, frame) | |
1126 | Lisp_Object spec, frame; | |
1127 | { | |
1128 | Lisp_Object mask; | |
1129 | ||
1130 | mask = Qnil; | |
1131 | if (valid_image_p (spec)) | |
1132 | { | |
1133 | struct frame *f = check_x_frame (frame); | |
1134 | int id = lookup_image (f, spec); | |
1135 | struct image *img = IMAGE_FROM_ID (f, id); | |
1136 | if (img->mask) | |
1137 | mask = Qt; | |
1138 | } | |
1139 | else | |
1140 | error ("Invalid image specification"); | |
1141 | ||
1142 | return mask; | |
1143 | } | |
1144 | ||
6ac3c7bb KS |
1145 | DEFUN ("image-extension-data", Fimage_extension_data, Simage_extension_data, 1, 2, 0, |
1146 | doc: /* Return extension data for image SPEC. | |
1147 | FRAME is the frame on which the image will be displayed. FRAME nil | |
1148 | or omitted means use the selected frame. */) | |
1149 | (spec, frame) | |
1150 | Lisp_Object spec, frame; | |
1151 | { | |
1152 | Lisp_Object ext; | |
1153 | ||
1154 | ext = Qnil; | |
1155 | if (valid_image_p (spec)) | |
1156 | { | |
1157 | struct frame *f = check_x_frame (frame); | |
1158 | int id = lookup_image (f, spec); | |
1159 | struct image *img = IMAGE_FROM_ID (f, id); | |
1160 | ext = img->data.lisp_val; | |
1161 | } | |
1162 | ||
1163 | return ext; | |
1164 | } | |
1165 | ||
4ef0d4d0 KS |
1166 | \f |
1167 | /*********************************************************************** | |
1168 | Image type independent image structures | |
1169 | ***********************************************************************/ | |
1170 | ||
1171 | static struct image *make_image P_ ((Lisp_Object spec, unsigned hash)); | |
1172 | static void free_image P_ ((struct frame *f, struct image *img)); | |
f1f25b99 | 1173 | static int check_image_size P_ ((struct frame *f, int width, int height)); |
4ef0d4d0 | 1174 | |
f1f25b99 CY |
1175 | #define MAX_IMAGE_SIZE 6.0 |
1176 | Lisp_Object Vmax_image_size; | |
4ef0d4d0 KS |
1177 | |
1178 | /* Allocate and return a new image structure for image specification | |
1179 | SPEC. SPEC has a hash value of HASH. */ | |
1180 | ||
1181 | static struct image * | |
1182 | make_image (spec, hash) | |
1183 | Lisp_Object spec; | |
1184 | unsigned hash; | |
1185 | { | |
1186 | struct image *img = (struct image *) xmalloc (sizeof *img); | |
1187 | ||
1188 | xassert (valid_image_p (spec)); | |
1189 | bzero (img, sizeof *img); | |
1190 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); | |
1191 | xassert (img->type != NULL); | |
1192 | img->spec = spec; | |
1193 | img->data.lisp_val = Qnil; | |
1194 | img->ascent = DEFAULT_IMAGE_ASCENT; | |
1195 | img->hash = hash; | |
6ac3c7bb | 1196 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
1197 | return img; |
1198 | } | |
1199 | ||
1200 | ||
1201 | /* Free image IMG which was used on frame F, including its resources. */ | |
1202 | ||
1203 | static void | |
1204 | free_image (f, img) | |
1205 | struct frame *f; | |
1206 | struct image *img; | |
1207 | { | |
1208 | if (img) | |
1209 | { | |
354884c4 | 1210 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1211 | |
1212 | /* Remove IMG from the hash table of its cache. */ | |
1213 | if (img->prev) | |
1214 | img->prev->next = img->next; | |
1215 | else | |
1216 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1217 | ||
1218 | if (img->next) | |
1219 | img->next->prev = img->prev; | |
1220 | ||
1221 | c->images[img->id] = NULL; | |
1222 | ||
1223 | /* Free resources, then free IMG. */ | |
1224 | img->type->free (f, img); | |
1225 | xfree (img); | |
1226 | } | |
1227 | } | |
1228 | ||
f1f25b99 CY |
1229 | /* Return 1 if the given widths and heights are valid for display; |
1230 | otherwise, return 0. */ | |
1231 | ||
1232 | int | |
1233 | check_image_size (f, width, height) | |
1234 | struct frame *f; | |
1235 | int width; | |
1236 | int height; | |
1237 | { | |
7df4765a | 1238 | int w, h; |
f1f25b99 | 1239 | |
7df4765a | 1240 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1241 | return 0; |
1242 | ||
7df4765a KS |
1243 | if (INTEGERP (Vmax_image_size)) |
1244 | w = h = XINT (Vmax_image_size); | |
1245 | else if (FLOATP (Vmax_image_size)) | |
1246 | { | |
1247 | if (f != NULL) | |
1248 | { | |
1249 | w = FRAME_PIXEL_WIDTH (f); | |
1250 | h = FRAME_PIXEL_HEIGHT (f); | |
1251 | } | |
1252 | else | |
1253 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
1254 | w = (int) (XFLOAT_DATA (Vmax_image_size) * w); | |
1255 | h = (int) (XFLOAT_DATA (Vmax_image_size) * h); | |
1256 | } | |
1257 | else | |
1258 | return 1; | |
1259 | ||
1260 | return (width <= w && height <= h); | |
f1f25b99 | 1261 | } |
4ef0d4d0 KS |
1262 | |
1263 | /* Prepare image IMG for display on frame F. Must be called before | |
1264 | drawing an image. */ | |
1265 | ||
1266 | void | |
1267 | prepare_image_for_display (f, img) | |
1268 | struct frame *f; | |
1269 | struct image *img; | |
1270 | { | |
1271 | EMACS_TIME t; | |
1272 | ||
1273 | /* We're about to display IMG, so set its timestamp to `now'. */ | |
1274 | EMACS_GET_TIME (t); | |
1275 | img->timestamp = EMACS_SECS (t); | |
1276 | ||
1277 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1278 | type dependent loader function. */ | |
1279 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1280 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 YM |
1281 | |
1282 | #if defined (MAC_OS) && USE_CG_DRAWING | |
1283 | if (!img->load_failed_p && img->data.ptr_val == NULL) | |
1284 | { | |
1285 | img->data.ptr_val = mac_create_cg_image_from_image (f, img); | |
1286 | if (img->data.ptr_val == NULL) | |
1287 | { | |
1288 | img->load_failed_p = 1; | |
1289 | img->type->free (f, img); | |
1290 | } | |
1291 | } | |
1292 | #endif | |
4ef0d4d0 KS |
1293 | } |
1294 | ||
1295 | ||
1296 | /* Value is the number of pixels for the ascent of image IMG when | |
1297 | drawn in face FACE. */ | |
1298 | ||
1299 | int | |
1938bc36 | 1300 | image_ascent (img, face, slice) |
4ef0d4d0 KS |
1301 | struct image *img; |
1302 | struct face *face; | |
1938bc36 | 1303 | struct glyph_slice *slice; |
4ef0d4d0 | 1304 | { |
1938bc36 | 1305 | int height; |
4ef0d4d0 KS |
1306 | int ascent; |
1307 | ||
1938bc36 KS |
1308 | if (slice->height == img->height) |
1309 | height = img->height + img->vmargin; | |
1310 | else if (slice->y == 0) | |
1311 | height = slice->height + img->vmargin; | |
1312 | else | |
1313 | height = slice->height; | |
1314 | ||
4ef0d4d0 KS |
1315 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1316 | { | |
1317 | if (face->font) | |
1318 | { | |
1319 | #ifdef HAVE_NTGUI | |
1320 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1321 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1322 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1323 | #else |
1324 | /* This expression is arranged so that if the image can't be | |
1325 | exactly centered, it will be moved slightly up. This is | |
1326 | because a typical font is `top-heavy' (due to the presence | |
1327 | uppercase letters), so the image placement should err towards | |
1328 | being top-heavy too. It also just generally looks better. */ | |
1329 | ascent = (height + face->font->ascent - face->font->descent + 1) / 2; | |
1330 | #endif /* HAVE_NTGUI */ | |
1331 | } | |
1332 | else | |
1333 | ascent = height / 2; | |
1334 | } | |
1335 | else | |
1336 | ascent = (int) (height * img->ascent / 100.0); | |
1337 | ||
1338 | return ascent; | |
1339 | } | |
1340 | ||
1341 | \f | |
1342 | /* Image background colors. */ | |
1343 | ||
1344 | /* Find the "best" corner color of a bitmap. | |
1345 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1346 | ||
1347 | static RGB_PIXEL_COLOR | |
6ac3c7bb | 1348 | four_corners_best (ximg, corners, width, height) |
4ef0d4d0 | 1349 | XImagePtr_or_DC ximg; |
6ac3c7bb | 1350 | int *corners; |
4ef0d4d0 KS |
1351 | unsigned long width, height; |
1352 | { | |
6ac3c7bb | 1353 | RGB_PIXEL_COLOR corner_pixels[4], best; |
4ef0d4d0 KS |
1354 | int i, best_count; |
1355 | ||
6ac3c7bb KS |
1356 | if (corners && corners[BOT_CORNER] >= 0) |
1357 | { | |
1358 | /* Get the colors at the corner_pixels of ximg. */ | |
1359 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1360 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1361 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1362 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1363 | } | |
1364 | else | |
1365 | { | |
1366 | /* Get the colors at the corner_pixels of ximg. */ | |
1367 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1368 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1369 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1370 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1371 | } | |
4ef0d4d0 KS |
1372 | /* Choose the most frequently found color as background. */ |
1373 | for (i = best_count = 0; i < 4; ++i) | |
1374 | { | |
1375 | int j, n; | |
1376 | ||
1377 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1378 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1379 | ++n; |
1380 | ||
1381 | if (n > best_count) | |
6ac3c7bb | 1382 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1383 | } |
1384 | ||
1385 | return best; | |
1386 | } | |
1387 | ||
1388 | /* Portability macros */ | |
1389 | ||
1390 | #ifdef HAVE_NTGUI | |
1391 | ||
1392 | #define Destroy_Image(img_dc, prev) \ | |
1393 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1394 | ||
1395 | #define Free_Pixmap(display, pixmap) \ | |
1396 | DeleteObject (pixmap) | |
1397 | ||
1398 | #else | |
1399 | ||
1400 | #define Destroy_Image(ximg, dummy) \ | |
1401 | XDestroyImage (ximg) | |
1402 | ||
1403 | #define Free_Pixmap(display, pixmap) \ | |
1404 | XFreePixmap (display, pixmap) | |
1405 | ||
1406 | #endif /* HAVE_NTGUI */ | |
1407 | ||
1408 | ||
1409 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1410 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1411 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1412 | use for the heuristic. */ |
4ef0d4d0 KS |
1413 | |
1414 | RGB_PIXEL_COLOR | |
1415 | image_background (img, f, ximg) | |
1416 | struct image *img; | |
1417 | struct frame *f; | |
1418 | XImagePtr_or_DC ximg; | |
1419 | { | |
1420 | if (! img->background_valid) | |
1421 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1422 | { | |
1423 | int free_ximg = !ximg; | |
1424 | #ifdef HAVE_NTGUI | |
1425 | HGDIOBJ prev; | |
1426 | #endif /* HAVE_NTGUI */ | |
1427 | ||
1428 | if (free_ximg) | |
1429 | { | |
1430 | #ifndef HAVE_NTGUI | |
1431 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1432 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1433 | #else | |
1434 | HDC frame_dc = get_frame_dc (f); | |
1435 | ximg = CreateCompatibleDC (frame_dc); | |
1436 | release_frame_dc (f, frame_dc); | |
1437 | prev = SelectObject (ximg, img->pixmap); | |
1438 | #endif /* !HAVE_NTGUI */ | |
1439 | } | |
1440 | ||
6ac3c7bb | 1441 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1442 | |
1443 | if (free_ximg) | |
1444 | Destroy_Image (ximg, prev); | |
1f026899 | 1445 | |
4ef0d4d0 KS |
1446 | img->background_valid = 1; |
1447 | } | |
1448 | ||
1449 | return img->background; | |
1450 | } | |
1451 | ||
1452 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1453 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1454 | existing XImage object to use for the heuristic. */ | |
1455 | ||
1456 | int | |
1457 | image_background_transparent (img, f, mask) | |
1458 | struct image *img; | |
1459 | struct frame *f; | |
1460 | XImagePtr_or_DC mask; | |
1461 | { | |
1462 | if (! img->background_transparent_valid) | |
1463 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1464 | { | |
1465 | if (img->mask) | |
1466 | { | |
1467 | int free_mask = !mask; | |
1468 | #ifdef HAVE_NTGUI | |
1469 | HGDIOBJ prev; | |
1470 | #endif /* HAVE_NTGUI */ | |
1471 | ||
1472 | if (free_mask) | |
1473 | { | |
1474 | #ifndef HAVE_NTGUI | |
1475 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1476 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1477 | #else | |
1478 | HDC frame_dc = get_frame_dc (f); | |
1479 | mask = CreateCompatibleDC (frame_dc); | |
1480 | release_frame_dc (f, frame_dc); | |
1481 | prev = SelectObject (mask, img->mask); | |
1482 | #endif /* HAVE_NTGUI */ | |
1483 | } | |
1484 | ||
1485 | img->background_transparent | |
6ac3c7bb | 1486 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1487 | |
1488 | if (free_mask) | |
1489 | Destroy_Image (mask, prev); | |
1490 | } | |
1491 | else | |
1492 | img->background_transparent = 0; | |
1493 | ||
1494 | img->background_transparent_valid = 1; | |
1495 | } | |
1496 | ||
1497 | return img->background_transparent; | |
1498 | } | |
1499 | ||
1500 | \f | |
1501 | /*********************************************************************** | |
1502 | Helper functions for X image types | |
1503 | ***********************************************************************/ | |
1504 | ||
1505 | static void x_clear_image_1 P_ ((struct frame *, struct image *, int, | |
1506 | int, int)); | |
1507 | static void x_clear_image P_ ((struct frame *f, struct image *img)); | |
1508 | static unsigned long x_alloc_image_color P_ ((struct frame *f, | |
1509 | struct image *img, | |
1510 | Lisp_Object color_name, | |
1511 | unsigned long dflt)); | |
1512 | ||
1513 | ||
1514 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1515 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1516 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1517 | the image, if any. */ | |
1518 | ||
1519 | static void | |
1520 | x_clear_image_1 (f, img, pixmap_p, mask_p, colors_p) | |
1521 | struct frame *f; | |
1522 | struct image *img; | |
1523 | int pixmap_p, mask_p, colors_p; | |
1524 | { | |
1525 | if (pixmap_p && img->pixmap) | |
1526 | { | |
1527 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1528 | img->pixmap = NO_PIXMAP; | |
1529 | img->background_valid = 0; | |
1530 | } | |
1531 | ||
1532 | if (mask_p && img->mask) | |
1533 | { | |
1534 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1535 | img->mask = NO_PIXMAP; | |
1536 | img->background_transparent_valid = 0; | |
1537 | } | |
1538 | ||
1539 | if (colors_p && img->ncolors) | |
1540 | { | |
1541 | /* MAC_TODO: color table support. */ | |
1542 | /* W32_TODO: color table support. */ | |
1543 | #ifdef HAVE_X_WINDOWS | |
1544 | x_free_colors (f, img->colors, img->ncolors); | |
1545 | #endif /* HAVE_X_WINDOWS */ | |
1546 | xfree (img->colors); | |
1547 | img->colors = NULL; | |
1548 | img->ncolors = 0; | |
1549 | } | |
c7fea325 YM |
1550 | |
1551 | #if defined (MAC_OS) && USE_CG_DRAWING | |
1552 | if (img->data.ptr_val) | |
1553 | { | |
1554 | CGImageRelease (img->data.ptr_val); | |
1555 | img->data.ptr_val = NULL; | |
1556 | } | |
1557 | #endif | |
4ef0d4d0 KS |
1558 | } |
1559 | ||
1560 | /* Free X resources of image IMG which is used on frame F. */ | |
1561 | ||
1562 | static void | |
1563 | x_clear_image (f, img) | |
1564 | struct frame *f; | |
1565 | struct image *img; | |
1566 | { | |
1567 | BLOCK_INPUT; | |
1568 | x_clear_image_1 (f, img, 1, 1, 1); | |
1569 | UNBLOCK_INPUT; | |
1570 | } | |
1571 | ||
1572 | ||
1573 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1574 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1575 | IMG->colors, so that it can be freed again. Value is the pixel | |
1576 | color. */ | |
1577 | ||
1578 | static unsigned long | |
1579 | x_alloc_image_color (f, img, color_name, dflt) | |
1580 | struct frame *f; | |
1581 | struct image *img; | |
1582 | Lisp_Object color_name; | |
1583 | unsigned long dflt; | |
1584 | { | |
1585 | XColor color; | |
1586 | unsigned long result; | |
1587 | ||
1588 | xassert (STRINGP (color_name)); | |
1589 | ||
1590 | if (x_defined_color (f, SDATA (color_name), &color, 1)) | |
1591 | { | |
1592 | /* This isn't called frequently so we get away with simply | |
1593 | reallocating the color vector to the needed size, here. */ | |
1594 | ++img->ncolors; | |
1595 | img->colors = | |
1596 | (unsigned long *) xrealloc (img->colors, | |
1597 | img->ncolors * sizeof *img->colors); | |
1598 | img->colors[img->ncolors - 1] = color.pixel; | |
1599 | result = color.pixel; | |
1600 | } | |
1601 | else | |
1602 | result = dflt; | |
1603 | ||
1604 | return result; | |
1605 | } | |
1606 | ||
1607 | ||
1608 | \f | |
1609 | /*********************************************************************** | |
1610 | Image Cache | |
1611 | ***********************************************************************/ | |
1612 | ||
d3c35d17 | 1613 | static struct image *search_image_cache P_ ((struct frame *, Lisp_Object, unsigned)); |
4ef0d4d0 KS |
1614 | static void cache_image P_ ((struct frame *f, struct image *img)); |
1615 | static void postprocess_image P_ ((struct frame *, struct image *)); | |
1616 | ||
1617 | /* Return a new, initialized image cache that is allocated from the | |
1618 | heap. Call free_image_cache to free an image cache. */ | |
1619 | ||
1620 | struct image_cache * | |
1621 | make_image_cache () | |
1622 | { | |
1623 | struct image_cache *c = (struct image_cache *) xmalloc (sizeof *c); | |
1624 | int size; | |
1625 | ||
1626 | bzero (c, sizeof *c); | |
1627 | c->size = 50; | |
1628 | c->images = (struct image **) xmalloc (c->size * sizeof *c->images); | |
1629 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
1630 | c->buckets = (struct image **) xmalloc (size); | |
1631 | bzero (c->buckets, size); | |
1632 | return c; | |
1633 | } | |
1634 | ||
1635 | ||
d3c35d17 CY |
1636 | /* Find an image matching SPEC in the cache, and return it. If no |
1637 | image is found, return NULL. */ | |
1638 | static struct image * | |
1639 | search_image_cache (f, spec, hash) | |
483e7ae0 CY |
1640 | struct frame *f; |
1641 | Lisp_Object spec; | |
d3c35d17 | 1642 | unsigned hash; |
483e7ae0 | 1643 | { |
91be6b66 | 1644 | struct image *img; |
354884c4 | 1645 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1646 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1647 | ||
8198352b CY |
1648 | if (!c) return NULL; |
1649 | ||
d3c35d17 CY |
1650 | /* If the image spec does not specify a background color, the cached |
1651 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1652 | The foreground color must also match, for the sake of monochrome |
1653 | images. | |
1654 | ||
1655 | In fact, we could ignore the foreground color matching condition | |
1656 | for color images, or if the image spec specifies :foreground; | |
1657 | similarly we could ignore the background color matching condition | |
1658 | for formats that don't use transparency (such as jpeg), or if the | |
1659 | image spec specifies :background. However, the extra memory | |
1660 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1661 | |
483e7ae0 | 1662 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1663 | if (img->hash == hash |
1664 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1665 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1666 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1667 | break; |
1668 | return img; | |
1669 | } | |
1670 | ||
1671 | ||
1672 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1673 | ||
1674 | static void | |
1675 | uncache_image (f, spec) | |
1676 | struct frame *f; | |
1677 | Lisp_Object spec; | |
1678 | { | |
1679 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1680 | if (img) | |
1681 | free_image (f, img); | |
483e7ae0 CY |
1682 | } |
1683 | ||
1684 | ||
4ef0d4d0 KS |
1685 | /* Free image cache of frame F. Be aware that X frames share images |
1686 | caches. */ | |
1687 | ||
1688 | void | |
1689 | free_image_cache (f) | |
1690 | struct frame *f; | |
1691 | { | |
354884c4 | 1692 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1693 | if (c) |
1694 | { | |
1695 | int i; | |
1696 | ||
1697 | /* Cache should not be referenced by any frame when freed. */ | |
1698 | xassert (c->refcount == 0); | |
1699 | ||
1700 | for (i = 0; i < c->used; ++i) | |
1701 | free_image (f, c->images[i]); | |
1702 | xfree (c->images); | |
1703 | xfree (c->buckets); | |
1704 | xfree (c); | |
354884c4 | 1705 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1706 | } |
1707 | } | |
1708 | ||
1709 | ||
1710 | /* Clear image cache of frame F. FORCE_P non-zero means free all | |
1711 | images. FORCE_P zero means clear only images that haven't been | |
1712 | displayed for some time. Should be called from time to time to | |
bbe6f2aa JB |
1713 | reduce the number of loaded images. If image-cache-eviction-delay |
1714 | is non-nil, this frees images in the cache which weren't displayed | |
1715 | for at least that many seconds. */ | |
4ef0d4d0 KS |
1716 | |
1717 | void | |
1718 | clear_image_cache (f, force_p) | |
1719 | struct frame *f; | |
1720 | int force_p; | |
1721 | { | |
354884c4 | 1722 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1723 | |
1724 | if (c && INTEGERP (Vimage_cache_eviction_delay)) | |
1725 | { | |
1726 | EMACS_TIME t; | |
1727 | unsigned long old; | |
1728 | int i, nfreed; | |
1729 | ||
1730 | EMACS_GET_TIME (t); | |
1731 | old = EMACS_SECS (t) - XFASTINT (Vimage_cache_eviction_delay); | |
1732 | ||
1733 | /* Block input so that we won't be interrupted by a SIGIO | |
1734 | while being in an inconsistent state. */ | |
1735 | BLOCK_INPUT; | |
1736 | ||
1737 | for (i = nfreed = 0; i < c->used; ++i) | |
1738 | { | |
1739 | struct image *img = c->images[i]; | |
1740 | if (img != NULL | |
1741 | && (force_p || img->timestamp < old)) | |
1742 | { | |
1743 | free_image (f, img); | |
1744 | ++nfreed; | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | /* We may be clearing the image cache because, for example, | |
1749 | Emacs was iconified for a longer period of time. In that | |
1750 | case, current matrices may still contain references to | |
1751 | images freed above. So, clear these matrices. */ | |
1752 | if (nfreed) | |
1753 | { | |
1754 | Lisp_Object tail, frame; | |
1755 | ||
1756 | FOR_EACH_FRAME (tail, frame) | |
1757 | { | |
1758 | struct frame *f = XFRAME (frame); | |
354884c4 | 1759 | if (FRAME_IMAGE_CACHE (f) == c) |
4ef0d4d0 KS |
1760 | clear_current_matrices (f); |
1761 | } | |
1762 | ||
1763 | ++windows_or_buffers_changed; | |
1764 | } | |
1765 | ||
1766 | UNBLOCK_INPUT; | |
1767 | } | |
1768 | } | |
1769 | ||
354884c4 SM |
1770 | void |
1771 | clear_image_caches (int force_p) | |
1772 | { | |
1773 | /* FIXME: We want to do | |
1774 | * struct terminal *t; | |
1775 | * for (t = terminal_list; t; t = t->next_terminal) | |
1776 | * clear_image_cache (t, filter); */ | |
1777 | Lisp_Object tail, frame; | |
1778 | FOR_EACH_FRAME (tail, frame) | |
1779 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
1780 | clear_image_cache (XFRAME (frame), force_p); | |
1781 | } | |
4ef0d4d0 KS |
1782 | |
1783 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1784 | 0, 1, 0, | |
1785 | doc: /* Clear the image cache of FRAME. | |
1786 | FRAME nil or omitted means use the selected frame. | |
1787 | FRAME t means clear the image caches of all frames. */) | |
1788 | (frame) | |
1789 | Lisp_Object frame; | |
1790 | { | |
1791 | if (EQ (frame, Qt)) | |
354884c4 | 1792 | clear_image_caches (1); |
4ef0d4d0 KS |
1793 | else |
1794 | clear_image_cache (check_x_frame (frame), 1); | |
1795 | ||
1796 | return Qnil; | |
1797 | } | |
1798 | ||
1799 | ||
483e7ae0 CY |
1800 | DEFUN ("image-refresh", Fimage_refresh, Simage_refresh, |
1801 | 1, 2, 0, | |
1802 | doc: /* Refresh the image with specification SPEC on frame FRAME. | |
1803 | If SPEC specifies an image file, the displayed image is updated with | |
1804 | the current contents of that file. | |
1805 | FRAME nil or omitted means use the selected frame. | |
1806 | FRAME t means refresh the image on all frames. */) | |
1807 | (spec, frame) | |
1808 | Lisp_Object spec, frame; | |
1809 | { | |
1810 | if (!valid_image_p (spec)) | |
1811 | error ("Invalid image specification"); | |
1812 | ||
1813 | if (EQ (frame, Qt)) | |
1814 | { | |
1815 | Lisp_Object tail; | |
1816 | FOR_EACH_FRAME (tail, frame) | |
1817 | { | |
1818 | struct frame *f = XFRAME (frame); | |
1819 | if (FRAME_WINDOW_P (f)) | |
1820 | uncache_image (f, spec); | |
1821 | } | |
1822 | } | |
1823 | else | |
1824 | uncache_image (check_x_frame (frame), spec); | |
1825 | ||
1826 | return Qnil; | |
1827 | } | |
1828 | ||
1829 | ||
4ef0d4d0 KS |
1830 | /* Compute masks and transform image IMG on frame F, as specified |
1831 | by the image's specification, */ | |
1832 | ||
1833 | static void | |
1834 | postprocess_image (f, img) | |
1835 | struct frame *f; | |
1836 | struct image *img; | |
1837 | { | |
1838 | /* Manipulation of the image's mask. */ | |
1839 | if (img->pixmap) | |
1840 | { | |
1841 | Lisp_Object conversion, spec; | |
1842 | Lisp_Object mask; | |
1843 | ||
1844 | spec = img->spec; | |
1845 | ||
1846 | /* `:heuristic-mask t' | |
1847 | `:mask heuristic' | |
1848 | means build a mask heuristically. | |
1849 | `:heuristic-mask (R G B)' | |
1850 | `:mask (heuristic (R G B))' | |
1851 | means build a mask from color (R G B) in the | |
1852 | image. | |
1853 | `:mask nil' | |
1854 | means remove a mask, if any. */ | |
1855 | ||
1856 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1857 | if (!NILP (mask)) | |
1858 | x_build_heuristic_mask (f, img, mask); | |
1859 | else | |
1860 | { | |
1861 | int found_p; | |
1862 | ||
1863 | mask = image_spec_value (spec, QCmask, &found_p); | |
1864 | ||
1865 | if (EQ (mask, Qheuristic)) | |
1866 | x_build_heuristic_mask (f, img, Qt); | |
1867 | else if (CONSP (mask) | |
1868 | && EQ (XCAR (mask), Qheuristic)) | |
1869 | { | |
1870 | if (CONSP (XCDR (mask))) | |
1871 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1872 | else | |
1873 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1874 | } | |
1875 | else if (NILP (mask) && found_p && img->mask) | |
1876 | { | |
1877 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1878 | img->mask = NO_PIXMAP; | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | ||
1883 | /* Should we apply an image transformation algorithm? */ | |
1884 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1885 | if (EQ (conversion, Qdisabled)) | |
1886 | x_disable_image (f, img); | |
1887 | else if (EQ (conversion, Qlaplace)) | |
1888 | x_laplace (f, img); | |
1889 | else if (EQ (conversion, Qemboss)) | |
1890 | x_emboss (f, img); | |
1891 | else if (CONSP (conversion) | |
1892 | && EQ (XCAR (conversion), Qedge_detection)) | |
1893 | { | |
1894 | Lisp_Object tem; | |
1895 | tem = XCDR (conversion); | |
1896 | if (CONSP (tem)) | |
1897 | x_edge_detection (f, img, | |
1898 | Fplist_get (tem, QCmatrix), | |
1899 | Fplist_get (tem, QCcolor_adjustment)); | |
1900 | } | |
1901 | } | |
1902 | } | |
1903 | ||
1904 | ||
1905 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1906 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1907 | ||
1908 | int | |
1909 | lookup_image (f, spec) | |
1910 | struct frame *f; | |
1911 | Lisp_Object spec; | |
1912 | { | |
4a0e3f08 | 1913 | struct image_cache *c; |
4ef0d4d0 | 1914 | struct image *img; |
4ef0d4d0 KS |
1915 | unsigned hash; |
1916 | struct gcpro gcpro1; | |
1917 | EMACS_TIME now; | |
1918 | ||
1919 | /* F must be a window-system frame, and SPEC must be a valid image | |
1920 | specification. */ | |
1921 | xassert (FRAME_WINDOW_P (f)); | |
1922 | xassert (valid_image_p (spec)); | |
1923 | ||
354884c4 | 1924 | c = FRAME_IMAGE_CACHE (f); |
4a0e3f08 | 1925 | |
4ef0d4d0 KS |
1926 | GCPRO1 (spec); |
1927 | ||
1928 | /* Look up SPEC in the hash table of the image cache. */ | |
1929 | hash = sxhash (spec, 0); | |
d3c35d17 | 1930 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1931 | if (img && img->load_failed_p) |
1932 | { | |
1933 | free_image (f, img); | |
1934 | img = NULL; | |
1935 | } | |
1936 | ||
4ef0d4d0 KS |
1937 | /* If not found, create a new image and cache it. */ |
1938 | if (img == NULL) | |
1939 | { | |
1940 | extern Lisp_Object Qpostscript; | |
1941 | ||
1942 | BLOCK_INPUT; | |
1943 | img = make_image (spec, hash); | |
1944 | cache_image (f, img); | |
1945 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1946 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1947 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1948 | |
1949 | /* If we can't load the image, and we don't have a width and | |
1950 | height, use some arbitrary width and height so that we can | |
1951 | draw a rectangle for it. */ | |
1952 | if (img->load_failed_p) | |
1953 | { | |
1954 | Lisp_Object value; | |
1955 | ||
1956 | value = image_spec_value (spec, QCwidth, NULL); | |
1957 | img->width = (INTEGERP (value) | |
1958 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1959 | value = image_spec_value (spec, QCheight, NULL); | |
1960 | img->height = (INTEGERP (value) | |
1961 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | /* Handle image type independent image attributes | |
1966 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1967 | `:background COLOR'. */ | |
1968 | Lisp_Object ascent, margin, relief, bg; | |
1969 | ||
1970 | ascent = image_spec_value (spec, QCascent, NULL); | |
1971 | if (INTEGERP (ascent)) | |
1972 | img->ascent = XFASTINT (ascent); | |
1973 | else if (EQ (ascent, Qcenter)) | |
1974 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1975 | ||
1976 | margin = image_spec_value (spec, QCmargin, NULL); | |
1977 | if (INTEGERP (margin) && XINT (margin) >= 0) | |
1978 | img->vmargin = img->hmargin = XFASTINT (margin); | |
1979 | else if (CONSP (margin) && INTEGERP (XCAR (margin)) | |
1980 | && INTEGERP (XCDR (margin))) | |
1981 | { | |
1982 | if (XINT (XCAR (margin)) > 0) | |
1983 | img->hmargin = XFASTINT (XCAR (margin)); | |
1984 | if (XINT (XCDR (margin)) > 0) | |
1985 | img->vmargin = XFASTINT (XCDR (margin)); | |
1986 | } | |
1987 | ||
1988 | relief = image_spec_value (spec, QCrelief, NULL); | |
1989 | if (INTEGERP (relief)) | |
1990 | { | |
1991 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1992 | img->hmargin += eabs (img->relief); |
1993 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1994 | } |
1995 | ||
1996 | if (! img->background_valid) | |
1997 | { | |
1998 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1999 | if (!NILP (bg)) | |
2000 | { | |
2001 | img->background | |
2002 | = x_alloc_image_color (f, img, bg, | |
2003 | FRAME_BACKGROUND_PIXEL (f)); | |
2004 | img->background_valid = 1; | |
2005 | } | |
2006 | } | |
2007 | ||
2008 | /* Do image transformations and compute masks, unless we | |
2009 | don't have the image yet. */ | |
2010 | if (!EQ (*img->type->type, Qpostscript)) | |
2011 | postprocess_image (f, img); | |
2012 | } | |
2013 | ||
2014 | UNBLOCK_INPUT; | |
2015 | } | |
2016 | ||
2017 | /* We're using IMG, so set its timestamp to `now'. */ | |
2018 | EMACS_GET_TIME (now); | |
2019 | img->timestamp = EMACS_SECS (now); | |
2020 | ||
2021 | UNGCPRO; | |
2022 | ||
2023 | /* Value is the image id. */ | |
2024 | return img->id; | |
2025 | } | |
2026 | ||
2027 | ||
2028 | /* Cache image IMG in the image cache of frame F. */ | |
2029 | ||
2030 | static void | |
2031 | cache_image (f, img) | |
2032 | struct frame *f; | |
2033 | struct image *img; | |
2034 | { | |
354884c4 | 2035 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
2036 | int i; |
2037 | ||
2038 | /* Find a free slot in c->images. */ | |
2039 | for (i = 0; i < c->used; ++i) | |
2040 | if (c->images[i] == NULL) | |
2041 | break; | |
2042 | ||
2043 | /* If no free slot found, maybe enlarge c->images. */ | |
2044 | if (i == c->used && c->used == c->size) | |
2045 | { | |
2046 | c->size *= 2; | |
2047 | c->images = (struct image **) xrealloc (c->images, | |
2048 | c->size * sizeof *c->images); | |
2049 | } | |
2050 | ||
2051 | /* Add IMG to c->images, and assign IMG an id. */ | |
2052 | c->images[i] = img; | |
2053 | img->id = i; | |
2054 | if (i == c->used) | |
2055 | ++c->used; | |
2056 | ||
2057 | /* Add IMG to the cache's hash table. */ | |
2058 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
2059 | img->next = c->buckets[i]; | |
2060 | if (img->next) | |
2061 | img->next->prev = img; | |
2062 | img->prev = NULL; | |
2063 | c->buckets[i] = img; | |
2064 | } | |
2065 | ||
2066 | ||
2067 | /* Call FN on every image in the image cache of frame F. Used to mark | |
2068 | Lisp Objects in the image cache. */ | |
2069 | ||
354884c4 SM |
2070 | /* Mark Lisp objects in image IMG. */ |
2071 | ||
2072 | static void | |
2073 | mark_image (img) | |
2074 | struct image *img; | |
2075 | { | |
2076 | mark_object (img->spec); | |
2077 | ||
2078 | if (!NILP (img->data.lisp_val)) | |
2079 | mark_object (img->data.lisp_val); | |
2080 | } | |
2081 | ||
2082 | ||
4ef0d4d0 | 2083 | void |
354884c4 | 2084 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 2085 | { |
354884c4 | 2086 | if (c) |
4ef0d4d0 | 2087 | { |
354884c4 SM |
2088 | int i; |
2089 | for (i = 0; i < c->used; ++i) | |
2090 | if (c->images[i]) | |
2091 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
2092 | } |
2093 | } | |
2094 | ||
2095 | ||
2096 | \f | |
2097 | /*********************************************************************** | |
2098 | X / MAC / W32 support code | |
2099 | ***********************************************************************/ | |
2100 | ||
2101 | #ifdef HAVE_NTGUI | |
2102 | ||
2103 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
09e8eb5b | 2104 | #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)() |
4ef0d4d0 KS |
2105 | |
2106 | /* Macro for loading those image functions from the library. */ | |
2107 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
2108 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
2109 | if (!fn_##func) return 0; \ | |
2110 | } | |
2111 | ||
0855eb52 JB |
2112 | /* Load a DLL implementing an image type. |
2113 | The `image-library-alist' variable associates a symbol, | |
3046a84b | 2114 | identifying an image type, to a list of possible filenames. |
0855eb52 JB |
2115 | The function returns NULL if no library could be loaded for |
2116 | the given image type, or if the library was previously loaded; | |
2117 | else the handle of the DLL. */ | |
2118 | static HMODULE | |
2119 | w32_delayed_load (Lisp_Object libraries, Lisp_Object type) | |
2120 | { | |
2121 | HMODULE library = NULL; | |
2122 | ||
2123 | if (CONSP (libraries) && NILP (Fassq (type, Vimage_type_cache))) | |
2124 | { | |
2125 | Lisp_Object dlls = Fassq (type, libraries); | |
2126 | ||
2127 | if (CONSP (dlls)) | |
2128 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
2129 | { | |
2130 | CHECK_STRING_CAR (dlls); | |
2131 | if (library = LoadLibrary (SDATA (XCAR (dlls)))) | |
2132 | break; | |
2133 | } | |
2134 | } | |
2135 | ||
2136 | return library; | |
2137 | } | |
2138 | ||
4ef0d4d0 KS |
2139 | #endif /* HAVE_NTGUI */ |
2140 | ||
2141 | static int x_create_x_image_and_pixmap P_ ((struct frame *, int, int, int, | |
2142 | XImagePtr *, Pixmap *)); | |
2143 | static void x_destroy_x_image P_ ((XImagePtr)); | |
2144 | static void x_put_x_image P_ ((struct frame *, XImagePtr, Pixmap, int, int)); | |
2145 | ||
2146 | ||
2147 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
2148 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
2149 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
2150 | via xmalloc. Print error messages via image_error if an error | |
2151 | occurs. Value is non-zero if successful. | |
2152 | ||
2153 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
2154 | should indicate the bit depth of the image. */ | |
2155 | ||
2156 | static int | |
2157 | x_create_x_image_and_pixmap (f, width, height, depth, ximg, pixmap) | |
2158 | struct frame *f; | |
2159 | int width, height, depth; | |
2160 | XImagePtr *ximg; | |
2161 | Pixmap *pixmap; | |
2162 | { | |
2163 | #ifdef HAVE_X_WINDOWS | |
2164 | Display *display = FRAME_X_DISPLAY (f); | |
2165 | Window window = FRAME_X_WINDOW (f); | |
2166 | Screen *screen = FRAME_X_SCREEN (f); | |
2167 | ||
2168 | xassert (interrupt_input_blocked); | |
2169 | ||
2170 | if (depth <= 0) | |
2171 | depth = DefaultDepthOfScreen (screen); | |
2172 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
2173 | depth, ZPixmap, 0, NULL, width, height, | |
2174 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
2175 | if (*ximg == NULL) | |
2176 | { | |
2177 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
2178 | return 0; | |
2179 | } | |
2180 | ||
2181 | /* Allocate image raster. */ | |
2182 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
2183 | ||
2184 | /* Allocate a pixmap of the same size. */ | |
2185 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2186 | if (*pixmap == NO_PIXMAP) | |
2187 | { | |
2188 | x_destroy_x_image (*ximg); | |
2189 | *ximg = NULL; | |
2190 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2191 | return 0; | |
2192 | } | |
2193 | ||
2194 | return 1; | |
2195 | #endif /* HAVE_X_WINDOWS */ | |
2196 | ||
2197 | #ifdef HAVE_NTGUI | |
2198 | ||
2199 | BITMAPINFOHEADER *header; | |
2200 | HDC hdc; | |
2201 | int scanline_width_bits; | |
2202 | int remainder; | |
2203 | int palette_colors = 0; | |
2204 | ||
2205 | if (depth == 0) | |
2206 | depth = 24; | |
2207 | ||
2208 | if (depth != 1 && depth != 4 && depth != 8 | |
2209 | && depth != 16 && depth != 24 && depth != 32) | |
2210 | { | |
2211 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
2212 | return 0; | |
2213 | } | |
2214 | ||
2215 | scanline_width_bits = width * depth; | |
2216 | remainder = scanline_width_bits % 32; | |
2217 | ||
2218 | if (remainder) | |
2219 | scanline_width_bits += 32 - remainder; | |
2220 | ||
2221 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2222 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2223 | if (depth < 16) | |
2224 | palette_colors = 1 << depth - 1; | |
2225 | ||
2226 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
2227 | if (*ximg == NULL) | |
2228 | { | |
2229 | image_error ("Unable to allocate memory for XImage", Qnil, Qnil); | |
2230 | return 0; | |
2231 | } | |
2232 | ||
2233 | header = &((*ximg)->info.bmiHeader); | |
2234 | bzero (&((*ximg)->info), sizeof (BITMAPINFO)); | |
2235 | header->biSize = sizeof (*header); | |
2236 | header->biWidth = width; | |
2237 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2238 | header->biPlanes = 1; | |
2239 | header->biBitCount = depth; | |
2240 | header->biCompression = BI_RGB; | |
2241 | header->biClrUsed = palette_colors; | |
2242 | ||
2243 | /* TODO: fill in palette. */ | |
2244 | if (depth == 1) | |
2245 | { | |
2246 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2247 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2248 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2249 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2250 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2251 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2252 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2253 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2254 | } | |
2255 | ||
2256 | hdc = get_frame_dc (f); | |
2257 | ||
2258 | /* Create a DIBSection and raster array for the bitmap, | |
2259 | and store its handle in *pixmap. */ | |
2260 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2261 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2262 | /* casting avoids a GCC warning */ |
2263 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2264 | |
2265 | /* Realize display palette and garbage all frames. */ | |
2266 | release_frame_dc (f, hdc); | |
2267 | ||
2268 | if (*pixmap == NULL) | |
2269 | { | |
5fc9fdeb | 2270 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2271 | Lisp_Object errcode; |
2272 | /* All system errors are < 10000, so the following is safe. */ | |
2273 | XSETINT (errcode, (int) err); | |
2274 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); | |
2275 | x_destroy_x_image (*ximg); | |
2276 | return 0; | |
2277 | } | |
2278 | ||
2279 | return 1; | |
2280 | ||
2281 | #endif /* HAVE_NTGUI */ | |
2282 | ||
2283 | #ifdef MAC_OS | |
2284 | Display *display = FRAME_X_DISPLAY (f); | |
2285 | Window window = FRAME_X_WINDOW (f); | |
2286 | ||
2287 | xassert (interrupt_input_blocked); | |
2288 | ||
2289 | /* Allocate a pixmap of the same size. */ | |
2290 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2291 | if (*pixmap == NO_PIXMAP) | |
2292 | { | |
4ef0d4d0 KS |
2293 | *ximg = NULL; |
2294 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2295 | return 0; | |
2296 | } | |
2297 | ||
2298 | LockPixels (GetGWorldPixMap (*pixmap)); | |
2299 | *ximg = *pixmap; | |
2300 | return 1; | |
2301 | ||
2302 | #endif /* MAC_OS */ | |
2303 | } | |
2304 | ||
2305 | ||
2306 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2307 | ||
2308 | static void | |
2309 | x_destroy_x_image (ximg) | |
2310 | XImagePtr ximg; | |
2311 | { | |
2312 | xassert (interrupt_input_blocked); | |
2313 | if (ximg) | |
2314 | { | |
2315 | #ifdef HAVE_X_WINDOWS | |
2316 | xfree (ximg->data); | |
2317 | ximg->data = NULL; | |
2318 | XDestroyImage (ximg); | |
2319 | #endif /* HAVE_X_WINDOWS */ | |
2320 | #ifdef HAVE_NTGUI | |
2321 | /* Data will be freed by DestroyObject. */ | |
2322 | ximg->data = NULL; | |
2323 | xfree (ximg); | |
2324 | #endif /* HAVE_NTGUI */ | |
2325 | #ifdef MAC_OS | |
2326 | XDestroyImage (ximg); | |
2327 | #endif /* MAC_OS */ | |
2328 | } | |
2329 | } | |
2330 | ||
2331 | ||
2332 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2333 | are width and height of both the image and pixmap. */ | |
2334 | ||
2335 | static void | |
2336 | x_put_x_image (f, ximg, pixmap, width, height) | |
2337 | struct frame *f; | |
2338 | XImagePtr ximg; | |
2339 | Pixmap pixmap; | |
2340 | int width, height; | |
2341 | { | |
2342 | #ifdef HAVE_X_WINDOWS | |
2343 | GC gc; | |
2344 | ||
2345 | xassert (interrupt_input_blocked); | |
2346 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2347 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2348 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2349 | #endif /* HAVE_X_WINDOWS */ | |
2350 | ||
2351 | #ifdef HAVE_NTGUI | |
2352 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2353 | HDC hdc = get_frame_dc (f); | |
2354 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2355 | release_frame_dc (f, hdc); | |
2356 | #endif | |
2357 | #endif /* HAVE_NTGUI */ | |
2358 | ||
2359 | #ifdef MAC_OS | |
2360 | xassert (ximg == pixmap); | |
2361 | #endif /* MAC_OS */ | |
2362 | } | |
2363 | ||
2364 | \f | |
2365 | /*********************************************************************** | |
2366 | File Handling | |
2367 | ***********************************************************************/ | |
2368 | ||
4ef0d4d0 KS |
2369 | static unsigned char *slurp_file P_ ((char *, int *)); |
2370 | ||
2371 | ||
6678dc11 | 2372 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2373 | x-bitmap-file-path. Value is the encoded full name of the file |
2374 | found, or nil if not found. */ | |
4ef0d4d0 | 2375 | |
c640aa9b | 2376 | Lisp_Object |
4ef0d4d0 KS |
2377 | x_find_image_file (file) |
2378 | Lisp_Object file; | |
2379 | { | |
2380 | Lisp_Object file_found, search_path; | |
2381 | struct gcpro gcpro1, gcpro2; | |
2382 | int fd; | |
2383 | ||
2384 | file_found = Qnil; | |
6678dc11 GM |
2385 | /* TODO I think this should use something like image-load-path |
2386 | instead. Unfortunately, that can contain non-string elements. */ | |
2387 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2388 | Vdata_directory), | |
2389 | Vx_bitmap_file_path); | |
4ef0d4d0 KS |
2390 | GCPRO2 (file_found, search_path); |
2391 | ||
050b82f6 | 2392 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2393 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2394 | ||
2395 | if (fd == -1) | |
2396 | file_found = Qnil; | |
2397 | else | |
022af124 KH |
2398 | { |
2399 | file_found = ENCODE_FILE (file_found); | |
2400 | close (fd); | |
2401 | } | |
4ef0d4d0 KS |
2402 | |
2403 | UNGCPRO; | |
2404 | return file_found; | |
2405 | } | |
2406 | ||
2407 | ||
2408 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2409 | with xmalloc holding FILE's contents. Value is null if an error | |
2410 | occurred. *SIZE is set to the size of the file. */ | |
2411 | ||
2412 | static unsigned char * | |
2413 | slurp_file (file, size) | |
2414 | char *file; | |
2415 | int *size; | |
2416 | { | |
2417 | FILE *fp = NULL; | |
2418 | unsigned char *buf = NULL; | |
2419 | struct stat st; | |
2420 | ||
2421 | if (stat (file, &st) == 0 | |
2422 | && (fp = fopen (file, "rb")) != NULL | |
fa8459a3 | 2423 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2424 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2425 | { | |
2426 | *size = st.st_size; | |
2427 | fclose (fp); | |
2428 | } | |
2429 | else | |
2430 | { | |
2431 | if (fp) | |
2432 | fclose (fp); | |
2433 | if (buf) | |
2434 | { | |
2435 | xfree (buf); | |
2436 | buf = NULL; | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | return buf; | |
2441 | } | |
2442 | ||
2443 | ||
2444 | \f | |
2445 | #ifdef MAC_OS | |
2446 | ||
2447 | /*********************************************************************** | |
2448 | MAC Image Load Functions | |
2449 | ***********************************************************************/ | |
2450 | ||
2451 | static int image_load_quicktime P_ ((struct frame *, struct image *img, | |
2452 | OSType)); | |
2453 | #ifdef MAC_OSX | |
2454 | static int image_load_quartz2d P_ ((struct frame *, struct image *img, int)); | |
2455 | #endif | |
2456 | ||
2457 | static OSErr | |
2458 | find_image_fsspec (specified_file, file, fss) | |
2459 | Lisp_Object specified_file, *file; | |
2460 | FSSpec *fss; | |
2461 | { | |
4ef0d4d0 | 2462 | OSErr err; |
2d22e7ed | 2463 | AEDesc desc; |
4ef0d4d0 KS |
2464 | |
2465 | *file = x_find_image_file (specified_file); | |
2466 | if (!STRINGP (*file)) | |
2467 | return fnfErr; /* file or directory not found; | |
2468 | incomplete pathname */ | |
2469 | /* Try to open the image file. */ | |
2d22e7ed YM |
2470 | err = AECoercePtr (TYPE_FILE_NAME, SDATA (*file), |
2471 | SBYTES (*file), typeFSS, &desc); | |
4ef0d4d0 | 2472 | if (err == noErr) |
2d22e7ed YM |
2473 | { |
2474 | #if TARGET_API_MAC_CARBON | |
2475 | err = AEGetDescData (&desc, fss, sizeof (FSSpec)); | |
4ef0d4d0 | 2476 | #else |
2d22e7ed | 2477 | *fss = *(FSSpec *)(*(desc.dataHandle)); |
4ef0d4d0 | 2478 | #endif |
2d22e7ed YM |
2479 | AEDisposeDesc (&desc); |
2480 | } | |
4ef0d4d0 KS |
2481 | return err; |
2482 | } | |
2483 | ||
2484 | static int | |
2485 | image_load_qt_1 (f, img, type, fss, dh) | |
2486 | struct frame *f; | |
2487 | struct image *img; | |
2488 | OSType type; | |
46accb8f | 2489 | const FSSpec *fss; |
4ef0d4d0 KS |
2490 | Handle dh; |
2491 | { | |
edc52b3f | 2492 | ComponentResult err; |
4ef0d4d0 KS |
2493 | GraphicsImportComponent gi; |
2494 | Rect rect; | |
2495 | int width, height; | |
de297941 | 2496 | ImageDescriptionHandle desc_handle; |
4ef0d4d0 KS |
2497 | short draw_all_pixels; |
2498 | Lisp_Object specified_bg; | |
2499 | XColor color; | |
2500 | XImagePtr ximg; | |
2501 | RGBColor bg_color; | |
2502 | ||
46accb8f | 2503 | err = OpenADefaultComponent (GraphicsImporterComponentType, type, &gi); |
4ef0d4d0 KS |
2504 | if (err != noErr) |
2505 | { | |
2506 | image_error ("Cannot get importer component for `%s'", img->spec, Qnil); | |
2507 | return 0; | |
2508 | } | |
2509 | if (dh == NULL) | |
2510 | { | |
2511 | /* read from file system spec */ | |
2512 | err = GraphicsImportSetDataFile (gi, fss); | |
2513 | if (err != noErr) | |
2514 | { | |
2515 | image_error ("Cannot set fsspec to graphics importer for '%s'", | |
2516 | img->spec, Qnil); | |
2517 | goto error; | |
2518 | } | |
2519 | } | |
2520 | else | |
2521 | { | |
2522 | /* read from data handle */ | |
2523 | err = GraphicsImportSetDataHandle (gi, dh); | |
2524 | if (err != noErr) | |
2525 | { | |
2526 | image_error ("Cannot set data handle to graphics importer for `%s'", | |
2527 | img->spec, Qnil); | |
2528 | goto error; | |
2529 | } | |
2530 | } | |
de297941 YM |
2531 | err = GraphicsImportGetImageDescription (gi, &desc_handle); |
2532 | if (err != noErr || desc_handle == NULL) | |
4ef0d4d0 KS |
2533 | { |
2534 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2535 | goto error; | |
2536 | } | |
de297941 YM |
2537 | width = img->width = (*desc_handle)->width; |
2538 | height = img->height = (*desc_handle)->height; | |
2539 | DisposeHandle ((Handle)desc_handle); | |
2540 | ||
2541 | if (!check_image_size (f, width, height)) | |
2542 | { | |
2543 | image_error ("Invalid image size", Qnil, Qnil); | |
2544 | goto error; | |
2545 | } | |
2546 | ||
4ef0d4d0 KS |
2547 | err = GraphicsImportDoesDrawAllPixels (gi, &draw_all_pixels); |
2548 | #if 0 | |
2549 | /* Don't check the error code here. It may have an undocumented | |
2550 | value -32766. */ | |
2551 | if (err != noErr) | |
2552 | { | |
2553 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2554 | goto error; | |
2555 | } | |
2556 | #endif | |
2557 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2558 | { | |
2559 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2560 | if (!STRINGP (specified_bg) || | |
2561 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2562 | { | |
2563 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2564 | color.red = RED16_FROM_ULONG (color.pixel); | |
2565 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2566 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2567 | } | |
2568 | } | |
2569 | ||
2570 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
2571 | goto error; | |
2572 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2573 | { | |
2a316a84 ST |
2574 | CGrafPtr old_port; |
2575 | GDHandle old_gdh; | |
2576 | ||
2577 | GetGWorld (&old_port, &old_gdh); | |
4ef0d4d0 KS |
2578 | SetGWorld (ximg, NULL); |
2579 | bg_color.red = color.red; | |
2580 | bg_color.green = color.green; | |
2581 | bg_color.blue = color.blue; | |
2582 | RGBBackColor (&bg_color); | |
2583 | #if TARGET_API_MAC_CARBON | |
2584 | GetPortBounds (ximg, &rect); | |
2585 | EraseRect (&rect); | |
2586 | #else | |
2587 | EraseRect (&(ximg->portRect)); | |
2588 | #endif | |
2a316a84 | 2589 | SetGWorld (old_port, old_gdh); |
4ef0d4d0 KS |
2590 | } |
2591 | GraphicsImportSetGWorld (gi, ximg, NULL); | |
2592 | GraphicsImportDraw (gi); | |
2593 | CloseComponent (gi); | |
2594 | ||
2595 | /* Maybe fill in the background field while we have ximg handy. */ | |
2596 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2597 | IMAGE_BACKGROUND (img, f, ximg); | |
2598 | ||
2599 | /* Put the image into the pixmap. */ | |
2600 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2601 | x_destroy_x_image (ximg); | |
2602 | return 1; | |
2603 | ||
2604 | error: | |
2605 | CloseComponent (gi); | |
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | ||
2610 | /* Load an image using the QuickTime Graphics Importer. | |
2611 | Note: The alpha channel does not work for PNG images. */ | |
2612 | static int | |
2613 | image_load_quicktime (f, img, type) | |
2614 | struct frame *f; | |
2615 | struct image *img; | |
2616 | OSType type; | |
2617 | { | |
2618 | Lisp_Object specified_file; | |
2619 | Lisp_Object specified_data; | |
2620 | OSErr err; | |
2621 | ||
2622 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2623 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2624 | ||
2625 | if (NILP (specified_data)) | |
2626 | { | |
2627 | /* Read from a file */ | |
2628 | Lisp_Object file; | |
2629 | FSSpec fss; | |
2630 | ||
2631 | err = find_image_fsspec (specified_file, &file, &fss); | |
2632 | if (err != noErr) | |
2633 | { | |
2634 | if (err == fnfErr) | |
2635 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2636 | else | |
2637 | image_error ("Cannot open `%s'", file, Qnil); | |
2638 | return 0; | |
2639 | } | |
2640 | return image_load_qt_1 (f, img, type, &fss, NULL); | |
2641 | } | |
2642 | else | |
2643 | { | |
2644 | /* Memory source! */ | |
2645 | int success_p; | |
2646 | Handle dh; | |
2647 | ||
2648 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
2649 | if (err != noErr) | |
2650 | { | |
2651 | image_error ("Cannot allocate data handle for `%s'", | |
2652 | img->spec, Qnil); | |
2653 | return 0; | |
2654 | } | |
2655 | success_p = image_load_qt_1 (f, img, type, NULL, dh); | |
2656 | DisposeHandle (dh); | |
2657 | return success_p; | |
2658 | } | |
2659 | } | |
2660 | ||
2661 | ||
2662 | #ifdef MAC_OSX | |
2663 | /* Load a PNG/JPEG image using Quartz 2D decoding routines. | |
2664 | CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2. | |
2665 | So don't use this function directly but determine at runtime | |
2666 | whether it exists. */ | |
2667 | typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType) | |
2668 | (CGDataProviderRef, const float [], bool, CGColorRenderingIntent); | |
2669 | static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider; | |
2670 | ||
2671 | ||
2672 | static void | |
2673 | init_image_func_pointer () | |
2674 | { | |
2675 | if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider")) | |
2676 | { | |
2677 | MyCGImageCreateWithPNGDataProvider | |
2678 | = (CGImageCreateWithPNGDataProviderProcType) | |
2679 | NSAddressOfSymbol (NSLookupAndBindSymbol | |
2680 | ("_CGImageCreateWithPNGDataProvider")); | |
2681 | } | |
2682 | else | |
2683 | MyCGImageCreateWithPNGDataProvider = NULL; | |
2684 | } | |
2685 | ||
2686 | ||
2687 | static int | |
2688 | image_load_quartz2d (f, img, png_p) | |
2689 | struct frame *f; | |
2690 | struct image *img; | |
2691 | int png_p; | |
2692 | { | |
2693 | Lisp_Object file, specified_file; | |
2694 | Lisp_Object specified_data, specified_bg; | |
2695 | struct gcpro gcpro1; | |
2696 | CGDataProviderRef source; | |
2697 | CGImageRef image; | |
2698 | int width, height; | |
2699 | XColor color; | |
2700 | XImagePtr ximg = NULL; | |
2701 | CGContextRef context; | |
2702 | CGRect rectangle; | |
2703 | ||
2704 | /* Open the file. */ | |
2705 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2706 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2707 | ||
2708 | file = Qnil; | |
2709 | GCPRO1 (file); | |
2710 | ||
2711 | if (NILP (specified_data)) | |
2712 | { | |
2713 | CFStringRef path; | |
2714 | CFURLRef url; | |
2715 | ||
2716 | file = x_find_image_file (specified_file); | |
2717 | if (!STRINGP (file)) | |
2718 | { | |
2719 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2720 | UNGCPRO; | |
2721 | return 0; | |
2722 | } | |
fb8b2fc3 | 2723 | path = cfstring_create_with_utf8_cstring (SDATA (file)); |
4ef0d4d0 KS |
2724 | url = CFURLCreateWithFileSystemPath (NULL, path, |
2725 | kCFURLPOSIXPathStyle, 0); | |
2726 | CFRelease (path); | |
2727 | source = CGDataProviderCreateWithURL (url); | |
2728 | CFRelease (url); | |
2729 | } | |
2730 | else | |
2731 | source = CGDataProviderCreateWithData (NULL, SDATA (specified_data), | |
2732 | SBYTES (specified_data), NULL); | |
2733 | ||
2734 | if (png_p) | |
2735 | image = (*MyCGImageCreateWithPNGDataProvider) (source, NULL, FALSE, | |
2736 | kCGRenderingIntentDefault); | |
2737 | else | |
2738 | image = CGImageCreateWithJPEGDataProvider (source, NULL, FALSE, | |
2739 | kCGRenderingIntentDefault); | |
2740 | ||
2741 | CGDataProviderRelease (source); | |
2742 | if (image == NULL) | |
2743 | { | |
2744 | UNGCPRO; | |
2745 | image_error ("Error reading image `%s'", img->spec, Qnil); | |
2746 | return 0; | |
2747 | } | |
de297941 YM |
2748 | width = img->width = CGImageGetWidth (image); |
2749 | height = img->height = CGImageGetHeight (image); | |
2750 | ||
2751 | if (!check_image_size (f, width, height)) | |
2752 | { | |
54eaa188 | 2753 | CGImageRelease (image); |
de297941 YM |
2754 | UNGCPRO; |
2755 | image_error ("Invalid image size", Qnil, Qnil); | |
2756 | return 0; | |
2757 | } | |
4ef0d4d0 KS |
2758 | |
2759 | if (png_p) | |
2760 | { | |
2761 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2762 | if (!STRINGP (specified_bg) || | |
2763 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2764 | { | |
2765 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2766 | color.red = RED16_FROM_ULONG (color.pixel); | |
2767 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2768 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2769 | } | |
2770 | } | |
de297941 | 2771 | |
4ef0d4d0 KS |
2772 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
2773 | { | |
2774 | CGImageRelease (image); | |
2775 | UNGCPRO; | |
2776 | return 0; | |
2777 | } | |
2778 | rectangle = CGRectMake (0, 0, width, height); | |
2779 | QDBeginCGContext (ximg, &context); | |
2780 | if (png_p) | |
2781 | { | |
2782 | CGContextSetRGBFillColor (context, color.red / 65535.0, | |
2783 | color.green / 65535.0, | |
2784 | color.blue / 65535.0, 1.0); | |
2785 | CGContextFillRect (context, rectangle); | |
2786 | } | |
2787 | CGContextDrawImage (context, rectangle, image); | |
2788 | QDEndCGContext (ximg, &context); | |
2789 | CGImageRelease (image); | |
2790 | ||
2791 | /* Maybe fill in the background field while we have ximg handy. */ | |
2792 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2793 | IMAGE_BACKGROUND (img, f, ximg); | |
2794 | ||
2795 | /* Put the image into the pixmap. */ | |
2796 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2797 | x_destroy_x_image (ximg); | |
2798 | UNGCPRO; | |
2799 | return 1; | |
2800 | } | |
2801 | #endif | |
2802 | ||
2803 | #endif /* MAC_OS */ | |
2804 | ||
2805 | \f | |
2806 | /*********************************************************************** | |
2807 | XBM images | |
2808 | ***********************************************************************/ | |
2809 | ||
2810 | static int xbm_scan P_ ((unsigned char **, unsigned char *, char *, int *)); | |
2811 | static int xbm_load P_ ((struct frame *f, struct image *img)); | |
2812 | static int xbm_load_image P_ ((struct frame *f, struct image *img, | |
2813 | unsigned char *, unsigned char *)); | |
2814 | static int xbm_image_p P_ ((Lisp_Object object)); | |
f1f25b99 CY |
2815 | static int xbm_read_bitmap_data P_ ((struct frame *f, |
2816 | unsigned char *, unsigned char *, | |
4ef0d4d0 KS |
2817 | int *, int *, unsigned char **)); |
2818 | static int xbm_file_p P_ ((Lisp_Object)); | |
2819 | ||
2820 | ||
2821 | /* Indices of image specification fields in xbm_format, below. */ | |
2822 | ||
2823 | enum xbm_keyword_index | |
2824 | { | |
2825 | XBM_TYPE, | |
2826 | XBM_FILE, | |
2827 | XBM_WIDTH, | |
2828 | XBM_HEIGHT, | |
2829 | XBM_DATA, | |
2830 | XBM_FOREGROUND, | |
2831 | XBM_BACKGROUND, | |
2832 | XBM_ASCENT, | |
2833 | XBM_MARGIN, | |
2834 | XBM_RELIEF, | |
2835 | XBM_ALGORITHM, | |
2836 | XBM_HEURISTIC_MASK, | |
2837 | XBM_MASK, | |
2838 | XBM_LAST | |
2839 | }; | |
2840 | ||
2841 | /* Vector of image_keyword structures describing the format | |
2842 | of valid XBM image specifications. */ | |
2843 | ||
2844 | static struct image_keyword xbm_format[XBM_LAST] = | |
2845 | { | |
2846 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2847 | {":file", IMAGE_STRING_VALUE, 0}, | |
2848 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2849 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2850 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2851 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2852 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2853 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
2854 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
2855 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
2856 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2857 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2858 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2859 | }; | |
2860 | ||
2861 | /* Structure describing the image type XBM. */ | |
2862 | ||
2863 | static struct image_type xbm_type = | |
2864 | { | |
2865 | &Qxbm, | |
2866 | xbm_image_p, | |
2867 | xbm_load, | |
2868 | x_clear_image, | |
2869 | NULL | |
2870 | }; | |
2871 | ||
2872 | /* Tokens returned from xbm_scan. */ | |
2873 | ||
2874 | enum xbm_token | |
2875 | { | |
2876 | XBM_TK_IDENT = 256, | |
2877 | XBM_TK_NUMBER | |
2878 | }; | |
2879 | ||
2880 | ||
2881 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2882 | A valid specification is a list starting with the symbol `image' | |
2883 | The rest of the list is a property list which must contain an | |
2884 | entry `:type xbm.. | |
2885 | ||
2886 | If the specification specifies a file to load, it must contain | |
2887 | an entry `:file FILENAME' where FILENAME is a string. | |
2888 | ||
2889 | If the specification is for a bitmap loaded from memory it must | |
2890 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2891 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2892 | ||
2893 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2894 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2895 | ||
2896 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2897 | ||
2898 | 3. a vector of strings or bool-vectors, one for each line of the | |
2899 | bitmap. | |
2900 | ||
bbe6f2aa | 2901 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2902 | may not be specified in this case because they are defined in the |
2903 | XBM file. | |
2904 | ||
2905 | Both the file and data forms may contain the additional entries | |
2906 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2907 | foreground and background of the frame on which the image is | |
2908 | displayed is used. */ | |
2909 | ||
2910 | static int | |
2911 | xbm_image_p (object) | |
2912 | Lisp_Object object; | |
2913 | { | |
2914 | struct image_keyword kw[XBM_LAST]; | |
2915 | ||
2916 | bcopy (xbm_format, kw, sizeof kw); | |
2917 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) | |
2918 | return 0; | |
2919 | ||
2920 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2921 | ||
2922 | if (kw[XBM_FILE].count) | |
2923 | { | |
2924 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2925 | return 0; | |
2926 | } | |
2927 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2928 | { | |
2929 | /* In-memory XBM file. */ | |
2930 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2931 | return 0; | |
2932 | } | |
2933 | else | |
2934 | { | |
2935 | Lisp_Object data; | |
2936 | int width, height; | |
2937 | ||
2938 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2939 | if (!kw[XBM_WIDTH].count | |
2940 | || !kw[XBM_HEIGHT].count | |
2941 | || !kw[XBM_DATA].count) | |
2942 | return 0; | |
2943 | ||
2944 | data = kw[XBM_DATA].value; | |
2945 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2946 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2947 | ||
2948 | /* Check type of data, and width and height against contents of | |
2949 | data. */ | |
2950 | if (VECTORP (data)) | |
2951 | { | |
2952 | int i; | |
2953 | ||
2954 | /* Number of elements of the vector must be >= height. */ | |
2955 | if (XVECTOR (data)->size < height) | |
2956 | return 0; | |
2957 | ||
2958 | /* Each string or bool-vector in data must be large enough | |
2959 | for one line of the image. */ | |
2960 | for (i = 0; i < height; ++i) | |
2961 | { | |
2962 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2963 | ||
2964 | if (STRINGP (elt)) | |
2965 | { | |
2966 | if (SCHARS (elt) | |
2967 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2968 | return 0; | |
2969 | } | |
2970 | else if (BOOL_VECTOR_P (elt)) | |
2971 | { | |
2972 | if (XBOOL_VECTOR (elt)->size < width) | |
2973 | return 0; | |
2974 | } | |
2975 | else | |
2976 | return 0; | |
2977 | } | |
2978 | } | |
2979 | else if (STRINGP (data)) | |
2980 | { | |
2981 | if (SCHARS (data) | |
2982 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2983 | return 0; | |
2984 | } | |
2985 | else if (BOOL_VECTOR_P (data)) | |
2986 | { | |
2987 | if (XBOOL_VECTOR (data)->size < width * height) | |
2988 | return 0; | |
2989 | } | |
2990 | else | |
2991 | return 0; | |
2992 | } | |
2993 | ||
2994 | return 1; | |
2995 | } | |
2996 | ||
2997 | ||
2998 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2999 | either an enumerator from enum xbm_token, or a character for a | |
3000 | single-character token, or 0 at end of file. If scanning an | |
3001 | identifier, store the lexeme of the identifier in SVAL. If | |
3002 | scanning a number, store its value in *IVAL. */ | |
3003 | ||
3004 | static int | |
3005 | xbm_scan (s, end, sval, ival) | |
3006 | unsigned char **s, *end; | |
3007 | char *sval; | |
3008 | int *ival; | |
3009 | { | |
3010 | unsigned int c; | |
3011 | ||
3012 | loop: | |
3013 | ||
3014 | /* Skip white space. */ | |
3015 | while (*s < end && (c = *(*s)++, isspace (c))) | |
3016 | ; | |
3017 | ||
3018 | if (*s >= end) | |
3019 | c = 0; | |
3020 | else if (isdigit (c)) | |
3021 | { | |
3022 | int value = 0, digit; | |
3023 | ||
3024 | if (c == '0' && *s < end) | |
3025 | { | |
3026 | c = *(*s)++; | |
3027 | if (c == 'x' || c == 'X') | |
3028 | { | |
3029 | while (*s < end) | |
3030 | { | |
3031 | c = *(*s)++; | |
3032 | if (isdigit (c)) | |
3033 | digit = c - '0'; | |
3034 | else if (c >= 'a' && c <= 'f') | |
3035 | digit = c - 'a' + 10; | |
3036 | else if (c >= 'A' && c <= 'F') | |
3037 | digit = c - 'A' + 10; | |
3038 | else | |
3039 | break; | |
3040 | value = 16 * value + digit; | |
3041 | } | |
3042 | } | |
3043 | else if (isdigit (c)) | |
3044 | { | |
3045 | value = c - '0'; | |
3046 | while (*s < end | |
3047 | && (c = *(*s)++, isdigit (c))) | |
3048 | value = 8 * value + c - '0'; | |
3049 | } | |
3050 | } | |
3051 | else | |
3052 | { | |
3053 | value = c - '0'; | |
3054 | while (*s < end | |
3055 | && (c = *(*s)++, isdigit (c))) | |
3056 | value = 10 * value + c - '0'; | |
3057 | } | |
3058 | ||
3059 | if (*s < end) | |
3060 | *s = *s - 1; | |
3061 | *ival = value; | |
3062 | c = XBM_TK_NUMBER; | |
3063 | } | |
3064 | else if (isalpha (c) || c == '_') | |
3065 | { | |
3066 | *sval++ = c; | |
3067 | while (*s < end | |
3068 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
3069 | *sval++ = c; | |
3070 | *sval = 0; | |
3071 | if (*s < end) | |
3072 | *s = *s - 1; | |
3073 | c = XBM_TK_IDENT; | |
3074 | } | |
3075 | else if (c == '/' && **s == '*') | |
3076 | { | |
3077 | /* C-style comment. */ | |
3078 | ++*s; | |
3079 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
3080 | ++*s; | |
3081 | if (**s) | |
3082 | { | |
3083 | *s += 2; | |
3084 | goto loop; | |
3085 | } | |
3086 | } | |
3087 | ||
3088 | return c; | |
3089 | } | |
3090 | ||
3091 | #ifdef HAVE_NTGUI | |
3092 | ||
3093 | /* Create a Windows bitmap from X bitmap data. */ | |
3094 | static HBITMAP | |
3095 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
3096 | { | |
3097 | static unsigned char swap_nibble[16] | |
3098 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
3099 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
3100 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
3101 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
3102 | int i, j, w1, w2; | |
3103 | unsigned char *bits, *p; | |
3104 | HBITMAP bmp; | |
3105 | ||
3106 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
3107 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
3108 | bits = (unsigned char *) alloca (height * w2); | |
3109 | bzero (bits, height * w2); | |
3110 | for (i = 0; i < height; i++) | |
3111 | { | |
3112 | p = bits + i*w2; | |
3113 | for (j = 0; j < w1; j++) | |
3114 | { | |
3115 | /* Bitswap XBM bytes to match how Windows does things. */ | |
3116 | unsigned char c = *data++; | |
3117 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
3118 | | (swap_nibble[(c>>4) & 0xf])); | |
3119 | } | |
3120 | } | |
3121 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
3122 | ||
3123 | return bmp; | |
3124 | } | |
3125 | ||
3046a84b JB |
3126 | static void |
3127 | convert_mono_to_color_image (f, img, foreground, background) | |
4ef0d4d0 KS |
3128 | struct frame *f; |
3129 | struct image *img; | |
3130 | COLORREF foreground, background; | |
3131 | { | |
3132 | HDC hdc, old_img_dc, new_img_dc; | |
3133 | HGDIOBJ old_prev, new_prev; | |
3134 | HBITMAP new_pixmap; | |
3135 | ||
3136 | hdc = get_frame_dc (f); | |
3137 | old_img_dc = CreateCompatibleDC (hdc); | |
3138 | new_img_dc = CreateCompatibleDC (hdc); | |
3139 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
3140 | release_frame_dc (f, hdc); | |
3141 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
3142 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
3143 | /* Windows convention for mono bitmaps is black = background, |
3144 | white = foreground. */ | |
2386b1f1 JR |
3145 | SetTextColor (new_img_dc, background); |
3146 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
3147 | |
3148 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
3149 | 0, 0, SRCCOPY); | |
3150 | ||
3151 | SelectObject (old_img_dc, old_prev); | |
3152 | SelectObject (new_img_dc, new_prev); | |
3153 | DeleteDC (old_img_dc); | |
3154 | DeleteDC (new_img_dc); | |
3155 | DeleteObject (img->pixmap); | |
3156 | if (new_pixmap == 0) | |
3157 | fprintf (stderr, "Failed to convert image to color.\n"); | |
3158 | else | |
3159 | img->pixmap = new_pixmap; | |
3160 | } | |
3161 | ||
3162 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
3163 | ||
3164 | #else | |
3165 | ||
3166 | #define XBM_BIT_SHUFFLE(b) (b) | |
3167 | ||
3168 | #endif /* HAVE_NTGUI */ | |
3169 | ||
3170 | ||
3171 | static void | |
3046a84b | 3172 | Create_Pixmap_From_Bitmap_Data (f, img, data, fg, bg, non_default_colors) |
4ef0d4d0 KS |
3173 | struct frame *f; |
3174 | struct image *img; | |
3175 | char *data; | |
3176 | RGB_PIXEL_COLOR fg, bg; | |
3177 | int non_default_colors; | |
3178 | { | |
3179 | #ifdef HAVE_NTGUI | |
3180 | img->pixmap | |
3181 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
3182 | ||
3183 | /* If colors were specified, transfer the bitmap to a color one. */ | |
3184 | if (non_default_colors) | |
3185 | convert_mono_to_color_image (f, img, fg, bg); | |
3186 | #else | |
3187 | img->pixmap | |
3188 | = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
3189 | FRAME_X_WINDOW (f), | |
3190 | data, | |
3191 | img->width, img->height, | |
3192 | fg, bg, | |
3193 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
3194 | #endif /* HAVE_NTGUI */ | |
3195 | } | |
3196 | ||
3197 | ||
3198 | ||
3199 | /* Replacement for XReadBitmapFileData which isn't available under old | |
3200 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
3201 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
3202 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
3203 | Value is non-zero if successful. DATA null means just test if | |
3204 | CONTENTS looks like an in-memory XBM file. */ | |
3205 | ||
3206 | static int | |
f1f25b99 CY |
3207 | xbm_read_bitmap_data (f, contents, end, width, height, data) |
3208 | struct frame *f; | |
4ef0d4d0 KS |
3209 | unsigned char *contents, *end; |
3210 | int *width, *height; | |
3211 | unsigned char **data; | |
3212 | { | |
3213 | unsigned char *s = contents; | |
3214 | char buffer[BUFSIZ]; | |
3215 | int padding_p = 0; | |
3216 | int v10 = 0; | |
3217 | int bytes_per_line, i, nbytes; | |
3218 | unsigned char *p; | |
3219 | int value; | |
3220 | int LA1; | |
3221 | ||
3222 | #define match() \ | |
3223 | LA1 = xbm_scan (&s, end, buffer, &value) | |
3224 | ||
3225 | #define expect(TOKEN) \ | |
3226 | if (LA1 != (TOKEN)) \ | |
3227 | goto failure; \ | |
3228 | else \ | |
3229 | match () | |
3230 | ||
3231 | #define expect_ident(IDENT) \ | |
3232 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
3233 | match (); \ | |
3234 | else \ | |
3235 | goto failure | |
3236 | ||
3237 | *width = *height = -1; | |
3238 | if (data) | |
3239 | *data = NULL; | |
3240 | LA1 = xbm_scan (&s, end, buffer, &value); | |
3241 | ||
3242 | /* Parse defines for width, height and hot-spots. */ | |
3243 | while (LA1 == '#') | |
3244 | { | |
3245 | match (); | |
3246 | expect_ident ("define"); | |
3247 | expect (XBM_TK_IDENT); | |
3248 | ||
431feaf6 | 3249 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 KS |
3250 | { |
3251 | char *p = strrchr (buffer, '_'); | |
3252 | p = p ? p + 1 : buffer; | |
3253 | if (strcmp (p, "width") == 0) | |
3254 | *width = value; | |
3255 | else if (strcmp (p, "height") == 0) | |
3256 | *height = value; | |
3257 | } | |
3258 | expect (XBM_TK_NUMBER); | |
3259 | } | |
3260 | ||
f1f25b99 | 3261 | if (!check_image_size (f, *width, *height)) |
4ef0d4d0 KS |
3262 | goto failure; |
3263 | else if (data == NULL) | |
3264 | goto success; | |
3265 | ||
3266 | /* Parse bits. Must start with `static'. */ | |
3267 | expect_ident ("static"); | |
3268 | if (LA1 == XBM_TK_IDENT) | |
3269 | { | |
3270 | if (strcmp (buffer, "unsigned") == 0) | |
3271 | { | |
3272 | match (); | |
3273 | expect_ident ("char"); | |
3274 | } | |
3275 | else if (strcmp (buffer, "short") == 0) | |
3276 | { | |
3277 | match (); | |
3278 | v10 = 1; | |
3279 | if (*width % 16 && *width % 16 < 9) | |
3280 | padding_p = 1; | |
3281 | } | |
3282 | else if (strcmp (buffer, "char") == 0) | |
3283 | match (); | |
3284 | else | |
3285 | goto failure; | |
3286 | } | |
3287 | else | |
3288 | goto failure; | |
3289 | ||
3290 | expect (XBM_TK_IDENT); | |
3291 | expect ('['); | |
3292 | expect (']'); | |
3293 | expect ('='); | |
3294 | expect ('{'); | |
3295 | ||
3296 | bytes_per_line = (*width + 7) / 8 + padding_p; | |
3297 | nbytes = bytes_per_line * *height; | |
fa8459a3 | 3298 | p = *data = (unsigned char *) xmalloc (nbytes); |
4ef0d4d0 KS |
3299 | |
3300 | if (v10) | |
3301 | { | |
3302 | for (i = 0; i < nbytes; i += 2) | |
3303 | { | |
3304 | int val = value; | |
3305 | expect (XBM_TK_NUMBER); | |
3306 | ||
3307 | *p++ = XBM_BIT_SHUFFLE (val); | |
3308 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
3309 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
3310 | ||
3311 | if (LA1 == ',' || LA1 == '}') | |
3312 | match (); | |
3313 | else | |
3314 | goto failure; | |
3315 | } | |
3316 | } | |
3317 | else | |
3318 | { | |
3319 | for (i = 0; i < nbytes; ++i) | |
3320 | { | |
3321 | int val = value; | |
3322 | expect (XBM_TK_NUMBER); | |
3323 | ||
3324 | *p++ = XBM_BIT_SHUFFLE (val); | |
3325 | ||
3326 | if (LA1 == ',' || LA1 == '}') | |
3327 | match (); | |
3328 | else | |
3329 | goto failure; | |
3330 | } | |
3331 | } | |
3332 | ||
3333 | success: | |
3334 | return 1; | |
3335 | ||
3336 | failure: | |
3337 | ||
3338 | if (data && *data) | |
3339 | { | |
3340 | xfree (*data); | |
3341 | *data = NULL; | |
3342 | } | |
3343 | return 0; | |
3344 | ||
3345 | #undef match | |
3346 | #undef expect | |
3347 | #undef expect_ident | |
3348 | } | |
3349 | ||
3350 | ||
3351 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
3352 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
3353 | successful. */ | |
3354 | ||
3355 | static int | |
3356 | xbm_load_image (f, img, contents, end) | |
3357 | struct frame *f; | |
3358 | struct image *img; | |
3359 | unsigned char *contents, *end; | |
3360 | { | |
3361 | int rc; | |
3362 | unsigned char *data; | |
3363 | int success_p = 0; | |
3364 | ||
f1f25b99 | 3365 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, &data); |
4ef0d4d0 KS |
3366 | if (rc) |
3367 | { | |
3368 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3369 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3370 | int non_default_colors = 0; | |
3371 | Lisp_Object value; | |
3372 | ||
3373 | xassert (img->width > 0 && img->height > 0); | |
3374 | ||
3375 | /* Get foreground and background colors, maybe allocate colors. */ | |
3376 | value = image_spec_value (img->spec, QCforeground, NULL); | |
3377 | if (!NILP (value)) | |
3378 | { | |
3379 | foreground = x_alloc_image_color (f, img, value, foreground); | |
3380 | non_default_colors = 1; | |
3381 | } | |
3382 | value = image_spec_value (img->spec, QCbackground, NULL); | |
3383 | if (!NILP (value)) | |
3384 | { | |
3385 | background = x_alloc_image_color (f, img, value, background); | |
3386 | img->background = background; | |
3387 | img->background_valid = 1; | |
3388 | non_default_colors = 1; | |
3389 | } | |
3390 | ||
1f026899 | 3391 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
3392 | foreground, background, |
3393 | non_default_colors); | |
3394 | xfree (data); | |
3395 | ||
3396 | if (img->pixmap == NO_PIXMAP) | |
3397 | { | |
3398 | x_clear_image (f, img); | |
3399 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
3400 | } | |
3401 | else | |
3402 | success_p = 1; | |
3403 | } | |
3404 | else | |
3405 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3406 | ||
3407 | return success_p; | |
3408 | } | |
3409 | ||
3410 | ||
3411 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
3412 | ||
3413 | static int | |
3414 | xbm_file_p (data) | |
3415 | Lisp_Object data; | |
3416 | { | |
3417 | int w, h; | |
3418 | return (STRINGP (data) | |
f1f25b99 | 3419 | && xbm_read_bitmap_data (NULL, SDATA (data), |
4ef0d4d0 KS |
3420 | (SDATA (data) |
3421 | + SBYTES (data)), | |
3422 | &w, &h, NULL)); | |
3423 | } | |
3424 | ||
3425 | ||
3426 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
3427 | non-zero if successful. */ | |
3428 | ||
3429 | static int | |
3430 | xbm_load (f, img) | |
3431 | struct frame *f; | |
3432 | struct image *img; | |
3433 | { | |
3434 | int success_p = 0; | |
3435 | Lisp_Object file_name; | |
3436 | ||
3437 | xassert (xbm_image_p (img->spec)); | |
3438 | ||
3439 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
3440 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
3441 | if (STRINGP (file_name)) | |
3442 | { | |
3443 | Lisp_Object file; | |
3444 | unsigned char *contents; | |
3445 | int size; | |
3446 | struct gcpro gcpro1; | |
3447 | ||
3448 | file = x_find_image_file (file_name); | |
3449 | GCPRO1 (file); | |
3450 | if (!STRINGP (file)) | |
3451 | { | |
3452 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
3453 | UNGCPRO; | |
3454 | return 0; | |
3455 | } | |
3456 | ||
3457 | contents = slurp_file (SDATA (file), &size); | |
3458 | if (contents == NULL) | |
3459 | { | |
3460 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3461 | UNGCPRO; | |
3462 | return 0; | |
3463 | } | |
3464 | ||
3465 | success_p = xbm_load_image (f, img, contents, contents + size); | |
3466 | UNGCPRO; | |
3467 | } | |
3468 | else | |
3469 | { | |
3470 | struct image_keyword fmt[XBM_LAST]; | |
3471 | Lisp_Object data; | |
3472 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3473 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3474 | int non_default_colors = 0; | |
3475 | char *bits; | |
3476 | int parsed_p; | |
3477 | int in_memory_file_p = 0; | |
3478 | ||
3479 | /* See if data looks like an in-memory XBM file. */ | |
3480 | data = image_spec_value (img->spec, QCdata, NULL); | |
3481 | in_memory_file_p = xbm_file_p (data); | |
3482 | ||
3483 | /* Parse the image specification. */ | |
3484 | bcopy (xbm_format, fmt, sizeof fmt); | |
3485 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); | |
3486 | xassert (parsed_p); | |
3487 | ||
3488 | /* Get specified width, and height. */ | |
3489 | if (!in_memory_file_p) | |
3490 | { | |
3491 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
3492 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
3493 | xassert (img->width > 0 && img->height > 0); | |
3494 | } | |
3495 | ||
3496 | /* Get foreground and background colors, maybe allocate colors. */ | |
3497 | if (fmt[XBM_FOREGROUND].count | |
3498 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
3499 | { | |
3500 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
3501 | foreground); | |
3502 | non_default_colors = 1; | |
3503 | } | |
3504 | ||
3505 | if (fmt[XBM_BACKGROUND].count | |
3506 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
3507 | { | |
3508 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
3509 | background); | |
3510 | non_default_colors = 1; | |
3511 | } | |
3512 | ||
3513 | if (in_memory_file_p) | |
3514 | success_p = xbm_load_image (f, img, SDATA (data), | |
3515 | (SDATA (data) | |
3516 | + SBYTES (data))); | |
3517 | else | |
3518 | { | |
3519 | if (VECTORP (data)) | |
3520 | { | |
3521 | int i; | |
3522 | char *p; | |
3523 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
3524 | ||
3525 | p = bits = (char *) alloca (nbytes * img->height); | |
3526 | for (i = 0; i < img->height; ++i, p += nbytes) | |
3527 | { | |
3528 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
3529 | if (STRINGP (line)) | |
3530 | bcopy (SDATA (line), p, nbytes); | |
3531 | else | |
3532 | bcopy (XBOOL_VECTOR (line)->data, p, nbytes); | |
3533 | } | |
3534 | } | |
3535 | else if (STRINGP (data)) | |
3536 | bits = SDATA (data); | |
3537 | else | |
3538 | bits = XBOOL_VECTOR (data)->data; | |
3539 | ||
44b1dc2e JR |
3540 | #ifdef WINDOWSNT |
3541 | { | |
3542 | char *invertedBits; | |
3543 | int nbytes, i; | |
3544 | /* Windows mono bitmaps are reversed compared with X. */ | |
3545 | invertedBits = bits; | |
3546 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR | |
3547 | * img->height; | |
3548 | bits = (char *) alloca(nbytes); | |
3549 | for (i = 0; i < nbytes; i++) | |
3550 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
3551 | } | |
3552 | #endif | |
4ef0d4d0 KS |
3553 | /* Create the pixmap. */ |
3554 | ||
3555 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
3556 | foreground, background, | |
3557 | non_default_colors); | |
3558 | if (img->pixmap) | |
3559 | success_p = 1; | |
3560 | else | |
3561 | { | |
3562 | image_error ("Unable to create pixmap for XBM image `%s'", | |
3563 | img->spec, Qnil); | |
3564 | x_clear_image (f, img); | |
3565 | } | |
3566 | } | |
3567 | } | |
3568 | ||
3569 | return success_p; | |
3570 | } | |
3571 | ||
3572 | ||
3573 | \f | |
3574 | /*********************************************************************** | |
3575 | XPM images | |
3576 | ***********************************************************************/ | |
3577 | ||
ea1aaa6f | 3578 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3579 | |
3580 | static int xpm_image_p P_ ((Lisp_Object object)); | |
3581 | static int xpm_load P_ ((struct frame *f, struct image *img)); | |
3582 | static int xpm_valid_color_symbols_p P_ ((Lisp_Object)); | |
3583 | ||
ea1aaa6f ST |
3584 | #endif /* HAVE_XPM || MAC_OS */ |
3585 | ||
3586 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
3587 | #ifdef HAVE_NTGUI |
3588 | /* Indicate to xpm.h that we don't have Xlib. */ | |
3589 | #define FOR_MSW | |
3590 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 3591 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
3592 | #define XColor xpm_XColor |
3593 | #define XImage xpm_XImage | |
279d3293 | 3594 | #define Display xpm_Display |
4ef0d4d0 KS |
3595 | #define PIXEL_ALREADY_TYPEDEFED |
3596 | #include "X11/xpm.h" | |
3597 | #undef FOR_MSW | |
3598 | #undef XColor | |
3599 | #undef XImage | |
279d3293 | 3600 | #undef Display |
4ef0d4d0 KS |
3601 | #undef PIXEL_ALREADY_TYPEDEFED |
3602 | #else | |
3603 | #include "X11/xpm.h" | |
3604 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3605 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3606 | |
ea1aaa6f | 3607 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3608 | /* The symbol `xpm' identifying XPM-format images. */ |
3609 | ||
3610 | Lisp_Object Qxpm; | |
3611 | ||
3612 | /* Indices of image specification fields in xpm_format, below. */ | |
3613 | ||
3614 | enum xpm_keyword_index | |
3615 | { | |
3616 | XPM_TYPE, | |
3617 | XPM_FILE, | |
3618 | XPM_DATA, | |
3619 | XPM_ASCENT, | |
3620 | XPM_MARGIN, | |
3621 | XPM_RELIEF, | |
3622 | XPM_ALGORITHM, | |
3623 | XPM_HEURISTIC_MASK, | |
3624 | XPM_MASK, | |
3625 | XPM_COLOR_SYMBOLS, | |
3626 | XPM_BACKGROUND, | |
3627 | XPM_LAST | |
3628 | }; | |
3629 | ||
3630 | /* Vector of image_keyword structures describing the format | |
3631 | of valid XPM image specifications. */ | |
3632 | ||
3633 | static struct image_keyword xpm_format[XPM_LAST] = | |
3634 | { | |
3635 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3636 | {":file", IMAGE_STRING_VALUE, 0}, | |
3637 | {":data", IMAGE_STRING_VALUE, 0}, | |
3638 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
3639 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
3640 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
3641 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3642 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3643 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3644 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3645 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3646 | }; | |
3647 | ||
3648 | /* Structure describing the image type XPM. */ | |
3649 | ||
3650 | static struct image_type xpm_type = | |
3651 | { | |
3652 | &Qxpm, | |
3653 | xpm_image_p, | |
3654 | xpm_load, | |
3655 | x_clear_image, | |
3656 | NULL | |
3657 | }; | |
3658 | ||
3659 | #ifdef HAVE_X_WINDOWS | |
3660 | ||
3661 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3662 | functions for allocating image colors. Our own functions handle | |
3663 | color allocation failures more gracefully than the ones on the XPM | |
3664 | lib. */ | |
3665 | ||
3666 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3667 | #define ALLOC_XPM_COLORS | |
3668 | #endif | |
3669 | #endif /* HAVE_X_WINDOWS */ | |
3670 | ||
3671 | #ifdef ALLOC_XPM_COLORS | |
3672 | ||
3673 | static void xpm_init_color_cache P_ ((struct frame *, XpmAttributes *)); | |
3674 | static void xpm_free_color_cache P_ ((void)); | |
3675 | static int xpm_lookup_color P_ ((struct frame *, char *, XColor *)); | |
3676 | static int xpm_color_bucket P_ ((char *)); | |
3677 | static struct xpm_cached_color *xpm_cache_color P_ ((struct frame *, char *, | |
3678 | XColor *, int)); | |
3679 | ||
3680 | /* An entry in a hash table used to cache color definitions of named | |
3681 | colors. This cache is necessary to speed up XPM image loading in | |
3682 | case we do color allocations ourselves. Without it, we would need | |
3683 | a call to XParseColor per pixel in the image. */ | |
3684 | ||
3685 | struct xpm_cached_color | |
3686 | { | |
3687 | /* Next in collision chain. */ | |
3688 | struct xpm_cached_color *next; | |
3689 | ||
3690 | /* Color definition (RGB and pixel color). */ | |
3691 | XColor color; | |
3692 | ||
3693 | /* Color name. */ | |
3694 | char name[1]; | |
3695 | }; | |
3696 | ||
3697 | /* The hash table used for the color cache, and its bucket vector | |
3698 | size. */ | |
3699 | ||
3700 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
3701 | struct xpm_cached_color **xpm_color_cache; | |
3702 | ||
3703 | /* Initialize the color cache. */ | |
3704 | ||
3705 | static void | |
3706 | xpm_init_color_cache (f, attrs) | |
3707 | struct frame *f; | |
3708 | XpmAttributes *attrs; | |
3709 | { | |
3710 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3711 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3712 | memset (xpm_color_cache, 0, nbytes); | |
3713 | init_color_table (); | |
3714 | ||
3715 | if (attrs->valuemask & XpmColorSymbols) | |
3716 | { | |
3717 | int i; | |
3718 | XColor color; | |
3719 | ||
3720 | for (i = 0; i < attrs->numsymbols; ++i) | |
3721 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3722 | attrs->colorsymbols[i].value, &color)) | |
3723 | { | |
3724 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3725 | color.blue); | |
3726 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3727 | } | |
3728 | } | |
3729 | } | |
3730 | ||
3731 | /* Free the color cache. */ | |
3732 | ||
3733 | static void | |
3734 | xpm_free_color_cache () | |
3735 | { | |
3736 | struct xpm_cached_color *p, *next; | |
3737 | int i; | |
3738 | ||
3739 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3740 | for (p = xpm_color_cache[i]; p; p = next) | |
3741 | { | |
3742 | next = p->next; | |
3743 | xfree (p); | |
3744 | } | |
3745 | ||
3746 | xfree (xpm_color_cache); | |
3747 | xpm_color_cache = NULL; | |
3748 | free_color_table (); | |
3749 | } | |
3750 | ||
3751 | /* Return the bucket index for color named COLOR_NAME in the color | |
3752 | cache. */ | |
3753 | ||
3754 | static int | |
3755 | xpm_color_bucket (color_name) | |
3756 | char *color_name; | |
3757 | { | |
3758 | unsigned h = 0; | |
3759 | char *s; | |
3760 | ||
3761 | for (s = color_name; *s; ++s) | |
3762 | h = (h << 2) ^ *s; | |
3763 | return h %= XPM_COLOR_CACHE_BUCKETS; | |
3764 | } | |
3765 | ||
3766 | ||
3767 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3768 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3769 | entry added. */ | |
3770 | ||
3771 | static struct xpm_cached_color * | |
3772 | xpm_cache_color (f, color_name, color, bucket) | |
3773 | struct frame *f; | |
3774 | char *color_name; | |
3775 | XColor *color; | |
3776 | int bucket; | |
3777 | { | |
3778 | size_t nbytes; | |
3779 | struct xpm_cached_color *p; | |
3780 | ||
3781 | if (bucket < 0) | |
3782 | bucket = xpm_color_bucket (color_name); | |
3783 | ||
3784 | nbytes = sizeof *p + strlen (color_name); | |
3785 | p = (struct xpm_cached_color *) xmalloc (nbytes); | |
3786 | strcpy (p->name, color_name); | |
3787 | p->color = *color; | |
3788 | p->next = xpm_color_cache[bucket]; | |
3789 | xpm_color_cache[bucket] = p; | |
3790 | return p; | |
3791 | } | |
3792 | ||
3793 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3794 | return the cached definition in *COLOR. Otherwise, make a new | |
3795 | entry in the cache and allocate the color. Value is zero if color | |
3796 | allocation failed. */ | |
3797 | ||
3798 | static int | |
3799 | xpm_lookup_color (f, color_name, color) | |
3800 | struct frame *f; | |
3801 | char *color_name; | |
3802 | XColor *color; | |
3803 | { | |
3804 | struct xpm_cached_color *p; | |
3805 | int h = xpm_color_bucket (color_name); | |
3806 | ||
3807 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3808 | if (strcmp (p->name, color_name) == 0) | |
3809 | break; | |
3810 | ||
3811 | if (p != NULL) | |
3812 | *color = p->color; | |
3813 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3814 | color_name, color)) | |
3815 | { | |
3816 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3817 | color->blue); | |
3818 | p = xpm_cache_color (f, color_name, color, h); | |
3819 | } | |
3820 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3821 | with transparency, and it's useful. */ | |
3822 | else if (strcmp ("opaque", color_name) == 0) | |
3823 | { | |
3824 | bzero (color, sizeof (XColor)); /* Is this necessary/correct? */ | |
3825 | color->pixel = FRAME_FOREGROUND_PIXEL (f); | |
3826 | p = xpm_cache_color (f, color_name, color, h); | |
3827 | } | |
3828 | ||
3829 | return p != NULL; | |
3830 | } | |
3831 | ||
3832 | ||
3833 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3834 | CLOSURE is a pointer to the frame on which we allocate the | |
3835 | color. Return in *COLOR the allocated color. Value is non-zero | |
3836 | if successful. */ | |
3837 | ||
3838 | static int | |
3839 | xpm_alloc_color (dpy, cmap, color_name, color, closure) | |
3840 | Display *dpy; | |
3841 | Colormap cmap; | |
3842 | char *color_name; | |
3843 | XColor *color; | |
3844 | void *closure; | |
3845 | { | |
3846 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3847 | } | |
3848 | ||
3849 | ||
3850 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3851 | is a pointer to the frame on which we allocate the color. Value is | |
3852 | non-zero if successful. */ | |
3853 | ||
3854 | static int | |
3855 | xpm_free_colors (dpy, cmap, pixels, npixels, closure) | |
3856 | Display *dpy; | |
3857 | Colormap cmap; | |
3858 | Pixel *pixels; | |
3859 | int npixels; | |
3860 | void *closure; | |
3861 | { | |
3862 | return 1; | |
3863 | } | |
3864 | ||
3865 | #endif /* ALLOC_XPM_COLORS */ | |
3866 | ||
3867 | ||
3868 | #ifdef HAVE_NTGUI | |
3869 | ||
3870 | /* XPM library details. */ | |
3871 | ||
3872 | DEF_IMGLIB_FN (XpmFreeAttributes); | |
3873 | DEF_IMGLIB_FN (XpmCreateImageFromBuffer); | |
3874 | DEF_IMGLIB_FN (XpmReadFileToImage); | |
3875 | DEF_IMGLIB_FN (XImageFree); | |
3876 | ||
4ef0d4d0 | 3877 | static int |
0855eb52 | 3878 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3879 | { |
3880 | HMODULE library; | |
3881 | ||
0855eb52 | 3882 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3883 | return 0; |
3884 | ||
3885 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3886 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3887 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3888 | LOAD_IMGLIB_FN (library, XImageFree); | |
3889 | return 1; | |
3890 | } | |
3891 | ||
3892 | #endif /* HAVE_NTGUI */ | |
3893 | ||
3894 | ||
3895 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3896 | for XPM images. Such a list must consist of conses whose car and | |
3897 | cdr are strings. */ | |
3898 | ||
3899 | static int | |
3900 | xpm_valid_color_symbols_p (color_symbols) | |
3901 | Lisp_Object color_symbols; | |
3902 | { | |
3903 | while (CONSP (color_symbols)) | |
3904 | { | |
3905 | Lisp_Object sym = XCAR (color_symbols); | |
3906 | if (!CONSP (sym) | |
3907 | || !STRINGP (XCAR (sym)) | |
3908 | || !STRINGP (XCDR (sym))) | |
3909 | break; | |
3910 | color_symbols = XCDR (color_symbols); | |
3911 | } | |
3912 | ||
3913 | return NILP (color_symbols); | |
3914 | } | |
3915 | ||
3916 | ||
3917 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3918 | ||
3919 | static int | |
3920 | xpm_image_p (object) | |
3921 | Lisp_Object object; | |
3922 | { | |
3923 | struct image_keyword fmt[XPM_LAST]; | |
3924 | bcopy (xpm_format, fmt, sizeof fmt); | |
3925 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) | |
3926 | /* Either `:file' or `:data' must be present. */ | |
3927 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3928 | /* Either no `:color-symbols' or it's a list of conses | |
3929 | whose car and cdr are strings. */ | |
3930 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3931 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3932 | } | |
3933 | ||
ea1aaa6f | 3934 | #endif /* HAVE_XPM || MAC_OS */ |
4ef0d4d0 | 3935 | |
786a43d6 CY |
3936 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
3937 | int | |
3938 | x_create_bitmap_from_xpm_data (f, bits) | |
3939 | struct frame *f; | |
3940 | char **bits; | |
3941 | { | |
3942 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
3943 | int id, rc; | |
3944 | XpmAttributes attrs; | |
3945 | Pixmap bitmap, mask; | |
3946 | ||
3947 | bzero (&attrs, sizeof attrs); | |
3948 | ||
54188d8f CY |
3949 | attrs.visual = FRAME_X_VISUAL (f); |
3950 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3951 | attrs.valuemask |= XpmVisual; | |
3952 | attrs.valuemask |= XpmColormap; | |
3953 | ||
786a43d6 CY |
3954 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
3955 | bits, &bitmap, &mask, &attrs); | |
3956 | if (rc != XpmSuccess) | |
fe45ad15 CY |
3957 | { |
3958 | XpmFreeAttributes (&attrs); | |
3959 | return -1; | |
3960 | } | |
786a43d6 CY |
3961 | |
3962 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3963 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3964 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3965 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3966 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3967 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3968 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3969 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3970 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3971 | ||
3972 | XpmFreeAttributes (&attrs); | |
3973 | return id; | |
3974 | } | |
0d876a14 | 3975 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3976 | |
4ef0d4d0 KS |
3977 | /* Load image IMG which will be displayed on frame F. Value is |
3978 | non-zero if successful. */ | |
3979 | ||
ea1aaa6f ST |
3980 | #ifdef HAVE_XPM |
3981 | ||
4ef0d4d0 KS |
3982 | static int |
3983 | xpm_load (f, img) | |
3984 | struct frame *f; | |
3985 | struct image *img; | |
3986 | { | |
3987 | int rc; | |
3988 | XpmAttributes attrs; | |
3989 | Lisp_Object specified_file, color_symbols; | |
3990 | #ifdef HAVE_NTGUI | |
3991 | HDC hdc; | |
3992 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3993 | #endif /* HAVE_NTGUI */ | |
3994 | ||
3995 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3996 | close colors. Return colors allocated. */ | |
3997 | bzero (&attrs, sizeof attrs); | |
3998 | ||
3999 | #ifndef HAVE_NTGUI | |
4000 | attrs.visual = FRAME_X_VISUAL (f); | |
4001 | attrs.colormap = FRAME_X_COLORMAP (f); | |
4002 | attrs.valuemask |= XpmVisual; | |
4003 | attrs.valuemask |= XpmColormap; | |
4004 | #endif /* HAVE_NTGUI */ | |
4005 | ||
4006 | #ifdef ALLOC_XPM_COLORS | |
4007 | /* Allocate colors with our own functions which handle | |
4008 | failing color allocation more gracefully. */ | |
4009 | attrs.color_closure = f; | |
4010 | attrs.alloc_color = xpm_alloc_color; | |
4011 | attrs.free_colors = xpm_free_colors; | |
4012 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
4013 | #else /* not ALLOC_XPM_COLORS */ | |
4014 | /* Let the XPM lib allocate colors. */ | |
4015 | attrs.valuemask |= XpmReturnAllocPixels; | |
4016 | #ifdef XpmAllocCloseColors | |
4017 | attrs.alloc_close_colors = 1; | |
4018 | attrs.valuemask |= XpmAllocCloseColors; | |
4019 | #else /* not XpmAllocCloseColors */ | |
4020 | attrs.closeness = 600; | |
4021 | attrs.valuemask |= XpmCloseness; | |
4022 | #endif /* not XpmAllocCloseColors */ | |
4023 | #endif /* ALLOC_XPM_COLORS */ | |
4024 | ||
4025 | /* If image specification contains symbolic color definitions, add | |
4026 | these to `attrs'. */ | |
4027 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
4028 | if (CONSP (color_symbols)) | |
4029 | { | |
4030 | Lisp_Object tail; | |
4031 | XpmColorSymbol *xpm_syms; | |
4032 | int i, size; | |
4033 | ||
4034 | attrs.valuemask |= XpmColorSymbols; | |
4035 | ||
4036 | /* Count number of symbols. */ | |
4037 | attrs.numsymbols = 0; | |
4038 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
4039 | ++attrs.numsymbols; | |
4040 | ||
4041 | /* Allocate an XpmColorSymbol array. */ | |
4042 | size = attrs.numsymbols * sizeof *xpm_syms; | |
4043 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
4044 | bzero (xpm_syms, size); | |
4045 | attrs.colorsymbols = xpm_syms; | |
4046 | ||
4047 | /* Fill the color symbol array. */ | |
4048 | for (tail = color_symbols, i = 0; | |
4049 | CONSP (tail); | |
4050 | ++i, tail = XCDR (tail)) | |
4051 | { | |
4052 | Lisp_Object name = XCAR (XCAR (tail)); | |
4053 | Lisp_Object color = XCDR (XCAR (tail)); | |
4054 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
4055 | strcpy (xpm_syms[i].name, SDATA (name)); | |
4056 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
4057 | strcpy (xpm_syms[i].value, SDATA (color)); | |
4058 | } | |
4059 | } | |
4060 | ||
4061 | /* Create a pixmap for the image, either from a file, or from a | |
4062 | string buffer containing data in the same format as an XPM file. */ | |
4063 | #ifdef ALLOC_XPM_COLORS | |
4064 | xpm_init_color_cache (f, &attrs); | |
4065 | #endif | |
4066 | ||
4067 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4068 | ||
4069 | #ifdef HAVE_NTGUI | |
4070 | { | |
4071 | HDC frame_dc = get_frame_dc (f); | |
4072 | hdc = CreateCompatibleDC (frame_dc); | |
4073 | release_frame_dc (f, frame_dc); | |
4074 | } | |
4075 | #endif /* HAVE_NTGUI */ | |
4076 | ||
4077 | if (STRINGP (specified_file)) | |
4078 | { | |
4079 | Lisp_Object file = x_find_image_file (specified_file); | |
4080 | if (!STRINGP (file)) | |
4081 | { | |
4082 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4083 | return 0; | |
4084 | } | |
4085 | ||
4086 | #ifdef HAVE_NTGUI | |
4087 | /* XpmReadFileToPixmap is not available in the Windows port of | |
4088 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
4089 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
4090 | &xpm_image, &xpm_mask, | |
4091 | &attrs); | |
4092 | #else | |
4093 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
4094 | SDATA (file), &img->pixmap, &img->mask, | |
4095 | &attrs); | |
4096 | #endif /* HAVE_NTGUI */ | |
4097 | } | |
4098 | else | |
4099 | { | |
4100 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
4101 | #ifdef HAVE_NTGUI | |
4102 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
4103 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
4104 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
4105 | &xpm_image, &xpm_mask, | |
4106 | &attrs); | |
4107 | #else | |
4108 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
4109 | SDATA (buffer), | |
4110 | &img->pixmap, &img->mask, | |
4111 | &attrs); | |
4112 | #endif /* HAVE_NTGUI */ | |
4113 | } | |
4114 | ||
4115 | if (rc == XpmSuccess) | |
4116 | { | |
4117 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
4118 | img->colors = colors_in_color_table (&img->ncolors); | |
4119 | #else /* not ALLOC_XPM_COLORS */ | |
4120 | int i; | |
4121 | ||
4122 | #ifdef HAVE_NTGUI | |
4123 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
4124 | plus some duplicate attributes. */ | |
4125 | if (xpm_image && xpm_image->bitmap) | |
4126 | { | |
4127 | img->pixmap = xpm_image->bitmap; | |
4128 | /* XImageFree in libXpm frees XImage struct without destroying | |
4129 | the bitmap, which is what we want. */ | |
4130 | fn_XImageFree (xpm_image); | |
4131 | } | |
4132 | if (xpm_mask && xpm_mask->bitmap) | |
4133 | { | |
4134 | /* The mask appears to be inverted compared with what we expect. | |
4135 | TODO: invert our expectations. See other places where we | |
4136 | have to invert bits because our idea of masks is backwards. */ | |
4137 | HGDIOBJ old_obj; | |
4138 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
4139 | ||
4140 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
4141 | SelectObject (hdc, old_obj); | |
4142 | ||
4143 | img->mask = xpm_mask->bitmap; | |
4144 | fn_XImageFree (xpm_mask); | |
4145 | DeleteDC (hdc); | |
4146 | } | |
4147 | ||
4148 | DeleteDC (hdc); | |
4149 | #endif /* HAVE_NTGUI */ | |
4150 | ||
4151 | /* Remember allocated colors. */ | |
4152 | img->ncolors = attrs.nalloc_pixels; | |
4153 | img->colors = (unsigned long *) xmalloc (img->ncolors | |
4154 | * sizeof *img->colors); | |
4155 | for (i = 0; i < attrs.nalloc_pixels; ++i) | |
4156 | { | |
4157 | img->colors[i] = attrs.alloc_pixels[i]; | |
4158 | #ifdef DEBUG_X_COLORS | |
4159 | register_color (img->colors[i]); | |
4160 | #endif | |
4161 | } | |
4162 | #endif /* not ALLOC_XPM_COLORS */ | |
4163 | ||
4164 | img->width = attrs.width; | |
4165 | img->height = attrs.height; | |
4166 | xassert (img->width > 0 && img->height > 0); | |
4167 | ||
4168 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
4169 | #ifdef HAVE_NTGUI | |
4170 | fn_XpmFreeAttributes (&attrs); | |
4171 | #else | |
4172 | XpmFreeAttributes (&attrs); | |
4173 | #endif /* HAVE_NTGUI */ | |
4174 | } | |
4175 | else | |
4176 | { | |
4177 | #ifdef HAVE_NTGUI | |
4178 | DeleteDC (hdc); | |
4179 | #endif /* HAVE_NTGUI */ | |
4180 | ||
4181 | switch (rc) | |
4182 | { | |
4183 | case XpmOpenFailed: | |
4184 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
4185 | break; | |
4186 | ||
4187 | case XpmFileInvalid: | |
4188 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4189 | break; | |
4190 | ||
4191 | case XpmNoMemory: | |
4192 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4193 | break; | |
4194 | ||
4195 | case XpmColorFailed: | |
4196 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
4197 | break; | |
4198 | ||
4199 | default: | |
4200 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
4201 | break; | |
4202 | } | |
4203 | } | |
4204 | ||
4205 | #ifdef ALLOC_XPM_COLORS | |
4206 | xpm_free_color_cache (); | |
4207 | #endif | |
4208 | return rc == XpmSuccess; | |
4209 | } | |
4210 | ||
4211 | #endif /* HAVE_XPM */ | |
4212 | ||
ea1aaa6f ST |
4213 | #ifdef MAC_OS |
4214 | ||
4215 | /* XPM support functions for Mac OS where libxpm is not available. | |
4216 | Only XPM version 3 (without any extensions) is supported. */ | |
4217 | ||
46accb8f YM |
4218 | static int xpm_scan P_ ((const unsigned char **, const unsigned char *, |
4219 | const unsigned char **, int *)); | |
ea1aaa6f | 4220 | static Lisp_Object xpm_make_color_table_v |
46accb8f YM |
4221 | P_ ((void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
4222 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int))); | |
4223 | static void xpm_put_color_table_v P_ ((Lisp_Object, const unsigned char *, | |
9ecf6403 | 4224 | int, Lisp_Object)); |
ea1aaa6f | 4225 | static Lisp_Object xpm_get_color_table_v P_ ((Lisp_Object, |
46accb8f | 4226 | const unsigned char *, int)); |
ea1aaa6f | 4227 | static Lisp_Object xpm_make_color_table_h |
46accb8f YM |
4228 | P_ ((void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
4229 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int))); | |
4230 | static void xpm_put_color_table_h P_ ((Lisp_Object, const unsigned char *, | |
9ecf6403 | 4231 | int, Lisp_Object)); |
ea1aaa6f | 4232 | static Lisp_Object xpm_get_color_table_h P_ ((Lisp_Object, |
46accb8f YM |
4233 | const unsigned char *, int)); |
4234 | static int xpm_str_to_color_key P_ ((const char *)); | |
ea1aaa6f | 4235 | static int xpm_load_image P_ ((struct frame *, struct image *, |
46accb8f | 4236 | const unsigned char *, const unsigned char *)); |
ea1aaa6f ST |
4237 | |
4238 | /* Tokens returned from xpm_scan. */ | |
4239 | ||
4240 | enum xpm_token | |
4241 | { | |
4242 | XPM_TK_IDENT = 256, | |
4243 | XPM_TK_STRING, | |
4244 | XPM_TK_EOF | |
4245 | }; | |
4246 | ||
4247 | /* Scan an XPM data and return a character (< 256) or a token defined | |
4248 | by enum xpm_token above. *S and END are the start (inclusive) and | |
4249 | the end (exclusive) addresses of the data, respectively. Advance | |
4250 | *S while scanning. If token is either XPM_TK_IDENT or | |
4251 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
4252 | length of the corresponding token, respectively. */ | |
4253 | ||
4254 | static int | |
4255 | xpm_scan (s, end, beg, len) | |
46accb8f | 4256 | const unsigned char **s, *end, **beg; |
ea1aaa6f ST |
4257 | int *len; |
4258 | { | |
4259 | int c; | |
4260 | ||
4261 | while (*s < end) | |
4262 | { | |
4263 | /* Skip white-space. */ | |
4264 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 4265 | ; |
ea1aaa6f ST |
4266 | |
4267 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 4268 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 4269 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
4270 | { |
4271 | *beg = *s - 1; | |
4272 | while (*s < end && | |
4273 | (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
4274 | ++*s; | |
4275 | *len = *s - *beg; | |
4276 | return XPM_TK_IDENT; | |
4277 | } | |
ea1aaa6f | 4278 | else if (c == '"') |
9ecf6403 YM |
4279 | { |
4280 | *beg = *s; | |
4281 | while (*s < end && **s != '"') | |
4282 | ++*s; | |
4283 | *len = *s - *beg; | |
4284 | if (*s < end) | |
4285 | ++*s; | |
4286 | return XPM_TK_STRING; | |
4287 | } | |
ea1aaa6f | 4288 | else if (c == '/') |
9ecf6403 YM |
4289 | { |
4290 | if (*s < end && **s == '*') | |
4291 | { | |
4292 | /* C-style comment. */ | |
4293 | ++*s; | |
4294 | do | |
4295 | { | |
4296 | while (*s < end && *(*s)++ != '*') | |
4297 | ; | |
4298 | } | |
4299 | while (*s < end && **s != '/'); | |
4300 | if (*s < end) | |
4301 | ++*s; | |
4302 | } | |
4303 | else | |
4304 | return c; | |
4305 | } | |
ea1aaa6f | 4306 | else |
9ecf6403 | 4307 | return c; |
ea1aaa6f ST |
4308 | } |
4309 | ||
4310 | return XPM_TK_EOF; | |
4311 | } | |
4312 | ||
bbe6f2aa | 4313 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
4314 | specifying the color of each pixel in XPM data. A value is either |
4315 | an integer that specifies a pixel color, Qt that specifies | |
4316 | transparency, or Qnil for the unspecified color. If the length of | |
4317 | the key string is one, a vector is used as a table. Otherwise, a | |
4318 | hash table is used. */ | |
4319 | ||
4320 | static Lisp_Object | |
4321 | xpm_make_color_table_v (put_func, get_func) | |
46accb8f YM |
4322 | void (**put_func) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4323 | Lisp_Object (**get_func) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4324 | { |
4325 | *put_func = xpm_put_color_table_v; | |
4326 | *get_func = xpm_get_color_table_v; | |
4327 | return Fmake_vector (make_number (256), Qnil); | |
4328 | } | |
4329 | ||
4330 | static void | |
4331 | xpm_put_color_table_v (color_table, chars_start, chars_len, color) | |
4332 | Lisp_Object color_table; | |
46accb8f | 4333 | const unsigned char *chars_start; |
ea1aaa6f ST |
4334 | int chars_len; |
4335 | Lisp_Object color; | |
4336 | { | |
4337 | XVECTOR (color_table)->contents[*chars_start] = color; | |
4338 | } | |
4339 | ||
4340 | static Lisp_Object | |
4341 | xpm_get_color_table_v (color_table, chars_start, chars_len) | |
4342 | Lisp_Object color_table; | |
46accb8f | 4343 | const unsigned char *chars_start; |
ea1aaa6f ST |
4344 | int chars_len; |
4345 | { | |
4346 | return XVECTOR (color_table)->contents[*chars_start]; | |
4347 | } | |
4348 | ||
4349 | static Lisp_Object | |
4350 | xpm_make_color_table_h (put_func, get_func) | |
46accb8f YM |
4351 | void (**put_func) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4352 | Lisp_Object (**get_func) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4353 | { |
4354 | *put_func = xpm_put_color_table_h; | |
4355 | *get_func = xpm_get_color_table_h; | |
4356 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
4357 | make_float (DEFAULT_REHASH_SIZE), |
4358 | make_float (DEFAULT_REHASH_THRESHOLD), | |
4359 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
4360 | } |
4361 | ||
4362 | static void | |
4363 | xpm_put_color_table_h (color_table, chars_start, chars_len, color) | |
4364 | Lisp_Object color_table; | |
46accb8f | 4365 | const unsigned char *chars_start; |
ea1aaa6f ST |
4366 | int chars_len; |
4367 | Lisp_Object color; | |
4368 | { | |
4369 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4370 | unsigned hash_code; | |
4371 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); | |
4372 | ||
4373 | hash_lookup (table, chars, &hash_code); | |
4374 | hash_put (table, chars, color, hash_code); | |
4375 | } | |
4376 | ||
4377 | static Lisp_Object | |
4378 | xpm_get_color_table_h (color_table, chars_start, chars_len) | |
4379 | Lisp_Object color_table; | |
46accb8f | 4380 | const unsigned char *chars_start; |
ea1aaa6f ST |
4381 | int chars_len; |
4382 | { | |
4383 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4384 | int i = hash_lookup (table, make_unibyte_string (chars_start, chars_len), | |
9ecf6403 | 4385 | NULL); |
ea1aaa6f ST |
4386 | |
4387 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
4388 | } | |
4389 | ||
4390 | enum xpm_color_key { | |
4391 | XPM_COLOR_KEY_S, | |
4392 | XPM_COLOR_KEY_M, | |
4393 | XPM_COLOR_KEY_G4, | |
4394 | XPM_COLOR_KEY_G, | |
4395 | XPM_COLOR_KEY_C | |
4396 | }; | |
4397 | ||
46accb8f | 4398 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
4399 | |
4400 | static int | |
4401 | xpm_str_to_color_key (s) | |
46accb8f | 4402 | const char *s; |
ea1aaa6f ST |
4403 | { |
4404 | int i; | |
4405 | ||
4406 | for (i = 0; | |
4407 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
4408 | i++) | |
4409 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
4410 | return i; | |
4411 | return -1; | |
4412 | } | |
4413 | ||
4414 | static int | |
4415 | xpm_load_image (f, img, contents, end) | |
4416 | struct frame *f; | |
4417 | struct image *img; | |
46accb8f | 4418 | const unsigned char *contents, *end; |
ea1aaa6f | 4419 | { |
46accb8f | 4420 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
4421 | unsigned char buffer[BUFSIZ]; |
4422 | int width, height, x, y; | |
4423 | int num_colors, chars_per_pixel; | |
4424 | int len, LA1; | |
46accb8f YM |
4425 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4426 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4427 | Lisp_Object frame, color_symbols, color_table; |
4428 | int best_key, have_mask = 0; | |
4429 | XImagePtr ximg = NULL, mask_img = NULL; | |
4430 | ||
4431 | #define match() \ | |
4432 | LA1 = xpm_scan (&s, end, &beg, &len) | |
4433 | ||
9ecf6403 YM |
4434 | #define expect(TOKEN) \ |
4435 | if (LA1 != (TOKEN)) \ | |
4436 | goto failure; \ | |
4437 | else \ | |
ea1aaa6f ST |
4438 | match () |
4439 | ||
9ecf6403 | 4440 | #define expect_ident(IDENT) \ |
ea1aaa6f | 4441 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
4442 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
4443 | match (); \ | |
4444 | else \ | |
ea1aaa6f ST |
4445 | goto failure |
4446 | ||
4447 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
4448 | goto failure; | |
4449 | s += 9; | |
4450 | match(); | |
4451 | expect_ident ("static"); | |
4452 | expect_ident ("char"); | |
4453 | expect ('*'); | |
4454 | expect (XPM_TK_IDENT); | |
4455 | expect ('['); | |
4456 | expect (']'); | |
4457 | expect ('='); | |
4458 | expect ('{'); | |
4459 | expect (XPM_TK_STRING); | |
4460 | if (len >= BUFSIZ) | |
4461 | goto failure; | |
4462 | memcpy (buffer, beg, len); | |
4463 | buffer[len] = '\0'; | |
4464 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 4465 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
4466 | || width <= 0 || height <= 0 |
4467 | || num_colors <= 0 || chars_per_pixel <= 0) | |
4468 | goto failure; | |
de297941 YM |
4469 | |
4470 | if (!check_image_size (f, width, height)) | |
4471 | { | |
4472 | image_error ("Invalid image size", Qnil, Qnil); | |
4473 | goto failure; | |
4474 | } | |
4475 | ||
ea1aaa6f ST |
4476 | expect (','); |
4477 | ||
4478 | XSETFRAME (frame, f); | |
4479 | if (!NILP (Fxw_display_color_p (frame))) | |
4480 | best_key = XPM_COLOR_KEY_C; | |
4481 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
4482 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 4483 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
4484 | else |
4485 | best_key = XPM_COLOR_KEY_M; | |
4486 | ||
4487 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
4488 | if (chars_per_pixel == 1) | |
4489 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 4490 | &get_color_table); |
ea1aaa6f ST |
4491 | else |
4492 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 4493 | &get_color_table); |
ea1aaa6f ST |
4494 | |
4495 | while (num_colors-- > 0) | |
4496 | { | |
4497 | unsigned char *color, *max_color; | |
4498 | int key, next_key, max_key = 0; | |
4499 | Lisp_Object symbol_color = Qnil, color_val; | |
4500 | XColor cdef; | |
4501 | ||
4502 | expect (XPM_TK_STRING); | |
4503 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 4504 | goto failure; |
ea1aaa6f ST |
4505 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
4506 | buffer[len - chars_per_pixel] = '\0'; | |
4507 | ||
4508 | str = strtok (buffer, " \t"); | |
4509 | if (str == NULL) | |
9ecf6403 | 4510 | goto failure; |
ea1aaa6f ST |
4511 | key = xpm_str_to_color_key (str); |
4512 | if (key < 0) | |
9ecf6403 | 4513 | goto failure; |
ea1aaa6f | 4514 | do |
9ecf6403 YM |
4515 | { |
4516 | color = strtok (NULL, " \t"); | |
4517 | if (color == NULL) | |
4518 | goto failure; | |
ea1aaa6f | 4519 | |
9db94f82 | 4520 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
4521 | { |
4522 | next_key = xpm_str_to_color_key (str); | |
4523 | if (next_key >= 0) | |
4524 | break; | |
4525 | color[strlen (color)] = ' '; | |
4526 | } | |
ea1aaa6f | 4527 | |
9ecf6403 YM |
4528 | if (key == XPM_COLOR_KEY_S) |
4529 | { | |
4530 | if (NILP (symbol_color)) | |
4531 | symbol_color = build_string (color); | |
4532 | } | |
4533 | else if (max_key < key && key <= best_key) | |
4534 | { | |
4535 | max_key = key; | |
4536 | max_color = color; | |
4537 | } | |
4538 | key = next_key; | |
4539 | } | |
ea1aaa6f ST |
4540 | while (str); |
4541 | ||
4542 | color_val = Qnil; | |
4543 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
4544 | { |
4545 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
4546 | ||
4547 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 YM |
4548 | { |
4549 | if (xstricmp (SDATA (XCDR (specified_color)), "None") == 0) | |
4550 | color_val = Qt; | |
4551 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
4552 | &cdef, 0)) | |
4553 | color_val = make_number (cdef.pixel); | |
4554 | } | |
9ecf6403 | 4555 | } |
ea1aaa6f | 4556 | if (NILP (color_val) && max_key > 0) |
9db94f82 YM |
4557 | { |
4558 | if (xstricmp (max_color, "None") == 0) | |
4559 | color_val = Qt; | |
4560 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
4561 | color_val = make_number (cdef.pixel); | |
4562 | } | |
ea1aaa6f | 4563 | if (!NILP (color_val)) |
9ecf6403 | 4564 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
4565 | |
4566 | expect (','); | |
4567 | } | |
4568 | ||
4569 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
9ecf6403 | 4570 | &ximg, &img->pixmap) |
ea1aaa6f | 4571 | || !x_create_x_image_and_pixmap (f, width, height, 1, |
9ecf6403 | 4572 | &mask_img, &img->mask)) |
ea1aaa6f ST |
4573 | { |
4574 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4575 | goto error; | |
4576 | } | |
4577 | ||
4578 | for (y = 0; y < height; y++) | |
4579 | { | |
4580 | expect (XPM_TK_STRING); | |
4581 | str = beg; | |
4582 | if (len < width * chars_per_pixel) | |
9ecf6403 | 4583 | goto failure; |
ea1aaa6f | 4584 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
4585 | { |
4586 | Lisp_Object color_val = | |
4587 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4588 | ||
4589 | XPutPixel (ximg, x, y, | |
4590 | (INTEGERP (color_val) ? XINT (color_val) | |
4591 | : FRAME_FOREGROUND_PIXEL (f))); | |
4592 | XPutPixel (mask_img, x, y, | |
4593 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
4594 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
4595 | } | |
ea1aaa6f | 4596 | if (y + 1 < height) |
9ecf6403 | 4597 | expect (','); |
ea1aaa6f ST |
4598 | } |
4599 | ||
4600 | img->width = width; | |
4601 | img->height = height; | |
4602 | ||
0b8ac842 YM |
4603 | /* Maybe fill in the background field while we have ximg handy. */ |
4604 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4605 | IMAGE_BACKGROUND (img, f, ximg); | |
4606 | ||
ea1aaa6f ST |
4607 | x_put_x_image (f, ximg, img->pixmap, width, height); |
4608 | x_destroy_x_image (ximg); | |
4609 | if (have_mask) | |
4610 | { | |
9ecf6403 YM |
4611 | /* Fill in the background_transparent field while we have the |
4612 | mask handy. */ | |
4613 | image_background_transparent (img, f, mask_img); | |
4614 | ||
ea1aaa6f ST |
4615 | x_put_x_image (f, mask_img, img->mask, width, height); |
4616 | x_destroy_x_image (mask_img); | |
4617 | } | |
4618 | else | |
4619 | { | |
4620 | x_destroy_x_image (mask_img); | |
4621 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4622 | img->mask = NO_PIXMAP; | |
4623 | } | |
4624 | ||
4625 | return 1; | |
4626 | ||
4627 | failure: | |
4628 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4629 | error: | |
4630 | x_destroy_x_image (ximg); | |
4631 | x_destroy_x_image (mask_img); | |
4632 | x_clear_image (f, img); | |
4633 | return 0; | |
4634 | ||
4635 | #undef match | |
4636 | #undef expect | |
4637 | #undef expect_ident | |
4638 | } | |
4639 | ||
4640 | static int | |
4641 | xpm_load (f, img) | |
4642 | struct frame *f; | |
4643 | struct image *img; | |
4644 | { | |
4645 | int success_p = 0; | |
4646 | Lisp_Object file_name; | |
4647 | ||
4648 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4649 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4650 | if (STRINGP (file_name)) | |
4651 | { | |
4652 | Lisp_Object file; | |
4653 | unsigned char *contents; | |
4654 | int size; | |
4655 | struct gcpro gcpro1; | |
4656 | ||
4657 | file = x_find_image_file (file_name); | |
4658 | GCPRO1 (file); | |
4659 | if (!STRINGP (file)) | |
9ecf6403 YM |
4660 | { |
4661 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4662 | UNGCPRO; | |
4663 | return 0; | |
4664 | } | |
ea1aaa6f ST |
4665 | |
4666 | contents = slurp_file (SDATA (file), &size); | |
4667 | if (contents == NULL) | |
9ecf6403 YM |
4668 | { |
4669 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
4670 | UNGCPRO; | |
4671 | return 0; | |
4672 | } | |
ea1aaa6f ST |
4673 | |
4674 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4675 | xfree (contents); | |
4676 | UNGCPRO; | |
4677 | } | |
4678 | else | |
4679 | { | |
4680 | Lisp_Object data; | |
4681 | ||
4682 | data = image_spec_value (img->spec, QCdata, NULL); | |
4683 | success_p = xpm_load_image (f, img, SDATA (data), | |
9ecf6403 | 4684 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4685 | } |
4686 | ||
4687 | return success_p; | |
4688 | } | |
4689 | ||
4690 | #endif /* MAC_OS */ | |
b0da69a7 | 4691 | |
ea1aaa6f | 4692 | |
4ef0d4d0 KS |
4693 | \f |
4694 | /*********************************************************************** | |
4695 | Color table | |
4696 | ***********************************************************************/ | |
4697 | ||
4698 | #ifdef COLOR_TABLE_SUPPORT | |
4699 | ||
4700 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4701 | ||
4702 | struct ct_color | |
4703 | { | |
4704 | int r, g, b; | |
4705 | unsigned long pixel; | |
4706 | ||
4707 | /* Next in color table collision list. */ | |
4708 | struct ct_color *next; | |
4709 | }; | |
4710 | ||
4711 | /* The bucket vector size to use. Must be prime. */ | |
4712 | ||
4713 | #define CT_SIZE 101 | |
4714 | ||
4715 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4716 | ||
4717 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4718 | ||
4719 | /* The color hash table. */ | |
4720 | ||
4721 | struct ct_color **ct_table; | |
4722 | ||
4723 | /* Number of entries in the color table. */ | |
4724 | ||
4725 | int ct_colors_allocated; | |
4726 | ||
4727 | /* Initialize the color table. */ | |
4728 | ||
4729 | static void | |
4730 | init_color_table () | |
4731 | { | |
4732 | int size = CT_SIZE * sizeof (*ct_table); | |
4733 | ct_table = (struct ct_color **) xmalloc (size); | |
4734 | bzero (ct_table, size); | |
4735 | ct_colors_allocated = 0; | |
4736 | } | |
4737 | ||
4738 | ||
4739 | /* Free memory associated with the color table. */ | |
4740 | ||
4741 | static void | |
4742 | free_color_table () | |
4743 | { | |
4744 | int i; | |
4745 | struct ct_color *p, *next; | |
4746 | ||
4747 | for (i = 0; i < CT_SIZE; ++i) | |
4748 | for (p = ct_table[i]; p; p = next) | |
4749 | { | |
4750 | next = p->next; | |
4751 | xfree (p); | |
4752 | } | |
4753 | ||
4754 | xfree (ct_table); | |
4755 | ct_table = NULL; | |
4756 | } | |
4757 | ||
4758 | ||
4759 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4760 | entry for that color already is in the color table, return the | |
4761 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4762 | G, B, and make an entry in the color table. */ | |
4763 | ||
4764 | static unsigned long | |
4765 | lookup_rgb_color (f, r, g, b) | |
4766 | struct frame *f; | |
4767 | int r, g, b; | |
4768 | { | |
4769 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4770 | int i = hash % CT_SIZE; | |
4771 | struct ct_color *p; | |
4772 | Display_Info *dpyinfo; | |
4773 | ||
4774 | /* Handle TrueColor visuals specially, which improves performance by | |
4775 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4776 | a nop, and pixel colors specify RGB values directly. See also | |
4777 | the Xlib spec, chapter 3.1. */ | |
4778 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4779 | if (dpyinfo->red_bits > 0) | |
4780 | { | |
4781 | unsigned long pr, pg, pb; | |
4782 | ||
4783 | /* Apply gamma-correction like normal color allocation does. */ | |
4784 | if (f->gamma) | |
4785 | { | |
4786 | XColor color; | |
4787 | color.red = r, color.green = g, color.blue = b; | |
4788 | gamma_correct (f, &color); | |
4789 | r = color.red, g = color.green, b = color.blue; | |
4790 | } | |
4791 | ||
4792 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4793 | them to the right position in the pixel color. Note that the | |
4794 | original RGB values are 16-bit values, as usual in X. */ | |
4795 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4796 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4797 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4798 | ||
4799 | /* Assemble the pixel color. */ | |
4800 | return pr | pg | pb; | |
4801 | } | |
1f026899 | 4802 | |
4ef0d4d0 KS |
4803 | for (p = ct_table[i]; p; p = p->next) |
4804 | if (p->r == r && p->g == g && p->b == b) | |
4805 | break; | |
4806 | ||
4807 | if (p == NULL) | |
4808 | { | |
4809 | ||
4810 | #ifdef HAVE_X_WINDOWS | |
4811 | XColor color; | |
4812 | Colormap cmap; | |
4813 | int rc; | |
4814 | ||
4815 | color.red = r; | |
4816 | color.green = g; | |
4817 | color.blue = b; | |
4818 | ||
4819 | cmap = FRAME_X_COLORMAP (f); | |
4820 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4821 | if (rc) | |
4822 | { | |
4823 | ++ct_colors_allocated; | |
4824 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4825 | p->r = r; | |
4826 | p->g = g; | |
4827 | p->b = b; | |
4828 | p->pixel = color.pixel; | |
4829 | p->next = ct_table[i]; | |
4830 | ct_table[i] = p; | |
4831 | } | |
4832 | else | |
4833 | return FRAME_FOREGROUND_PIXEL (f); | |
4834 | ||
4835 | #else | |
4836 | COLORREF color; | |
4837 | #ifdef HAVE_NTGUI | |
4838 | color = PALETTERGB (r, g, b); | |
4839 | #else | |
4840 | color = RGB_TO_ULONG (r, g, b); | |
4841 | #endif /* HAVE_NTGUI */ | |
4842 | ++ct_colors_allocated; | |
4843 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4844 | p->r = r; | |
4845 | p->g = g; | |
4846 | p->b = b; | |
4847 | p->pixel = color; | |
4848 | p->next = ct_table[i]; | |
4849 | ct_table[i] = p; | |
4850 | #endif /* HAVE_X_WINDOWS */ | |
4851 | ||
4852 | } | |
4853 | ||
4854 | return p->pixel; | |
4855 | } | |
4856 | ||
4857 | ||
4858 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4859 | table. If not already present, allocate it. Value is PIXEL. */ | |
4860 | ||
4861 | static unsigned long | |
4862 | lookup_pixel_color (f, pixel) | |
4863 | struct frame *f; | |
4864 | unsigned long pixel; | |
4865 | { | |
4866 | int i = pixel % CT_SIZE; | |
4867 | struct ct_color *p; | |
4868 | ||
4869 | for (p = ct_table[i]; p; p = p->next) | |
4870 | if (p->pixel == pixel) | |
4871 | break; | |
4872 | ||
4873 | if (p == NULL) | |
4874 | { | |
4875 | XColor color; | |
4876 | Colormap cmap; | |
4877 | int rc; | |
4878 | ||
4879 | #ifdef HAVE_X_WINDOWS | |
4880 | cmap = FRAME_X_COLORMAP (f); | |
4881 | color.pixel = pixel; | |
4882 | x_query_color (f, &color); | |
4883 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4884 | #else | |
4885 | BLOCK_INPUT; | |
4886 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4887 | color.pixel = pixel; | |
4888 | XQueryColor (NULL, cmap, &color); | |
4889 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4890 | UNBLOCK_INPUT; | |
4891 | #endif /* HAVE_X_WINDOWS */ | |
4892 | ||
4893 | if (rc) | |
4894 | { | |
4895 | ++ct_colors_allocated; | |
4896 | ||
4897 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4898 | p->r = color.red; | |
4899 | p->g = color.green; | |
4900 | p->b = color.blue; | |
4901 | p->pixel = pixel; | |
4902 | p->next = ct_table[i]; | |
4903 | ct_table[i] = p; | |
4904 | } | |
4905 | else | |
4906 | return FRAME_FOREGROUND_PIXEL (f); | |
4907 | } | |
4908 | return p->pixel; | |
4909 | } | |
4910 | ||
4911 | ||
4912 | /* Value is a vector of all pixel colors contained in the color table, | |
4913 | allocated via xmalloc. Set *N to the number of colors. */ | |
4914 | ||
4915 | static unsigned long * | |
4916 | colors_in_color_table (n) | |
4917 | int *n; | |
4918 | { | |
4919 | int i, j; | |
4920 | struct ct_color *p; | |
4921 | unsigned long *colors; | |
4922 | ||
4923 | if (ct_colors_allocated == 0) | |
4924 | { | |
4925 | *n = 0; | |
4926 | colors = NULL; | |
4927 | } | |
4928 | else | |
4929 | { | |
4930 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4931 | * sizeof *colors); | |
4932 | *n = ct_colors_allocated; | |
4933 | ||
4934 | for (i = j = 0; i < CT_SIZE; ++i) | |
4935 | for (p = ct_table[i]; p; p = p->next) | |
4936 | colors[j++] = p->pixel; | |
4937 | } | |
4938 | ||
4939 | return colors; | |
4940 | } | |
4941 | ||
4942 | #else /* COLOR_TABLE_SUPPORT */ | |
4943 | ||
4944 | static unsigned long | |
4945 | lookup_rgb_color (f, r, g, b) | |
4946 | struct frame *f; | |
4947 | int r, g, b; | |
4948 | { | |
4949 | unsigned long pixel; | |
4950 | ||
4951 | #ifdef MAC_OS | |
4952 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4953 | gamma_correct (f, &pixel); | |
4954 | #endif /* MAC_OS */ | |
4955 | ||
4956 | #ifdef HAVE_NTGUI | |
4957 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4958 | #endif /* HAVE_NTGUI */ | |
4959 | ||
4960 | return pixel; | |
4961 | } | |
4962 | ||
4963 | static void | |
4964 | init_color_table () | |
4965 | { | |
4966 | } | |
4967 | #endif /* COLOR_TABLE_SUPPORT */ | |
4968 | ||
4969 | \f | |
4970 | /*********************************************************************** | |
4971 | Algorithms | |
4972 | ***********************************************************************/ | |
4973 | ||
4974 | static XColor *x_to_xcolors P_ ((struct frame *, struct image *, int)); | |
4975 | static void x_from_xcolors P_ ((struct frame *, struct image *, XColor *)); | |
4976 | static void x_detect_edges P_ ((struct frame *, struct image *, int[9], int)); | |
4977 | ||
4978 | #ifdef HAVE_NTGUI | |
4979 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4980 | #endif /* HAVE_NTGUI */ | |
4981 | ||
4982 | /* Non-zero means draw a cross on images having `:conversion | |
4983 | disabled'. */ | |
4984 | ||
4985 | int cross_disabled_images; | |
4986 | ||
4987 | /* Edge detection matrices for different edge-detection | |
4988 | strategies. */ | |
4989 | ||
4990 | static int emboss_matrix[9] = { | |
4991 | /* x - 1 x x + 1 */ | |
4992 | 2, -1, 0, /* y - 1 */ | |
4993 | -1, 0, 1, /* y */ | |
4994 | 0, 1, -2 /* y + 1 */ | |
4995 | }; | |
4996 | ||
4997 | static int laplace_matrix[9] = { | |
4998 | /* x - 1 x x + 1 */ | |
4999 | 1, 0, 0, /* y - 1 */ | |
5000 | 0, 0, 0, /* y */ | |
5001 | 0, 0, -1 /* y + 1 */ | |
5002 | }; | |
5003 | ||
5004 | /* Value is the intensity of the color whose red/green/blue values | |
5005 | are R, G, and B. */ | |
5006 | ||
5007 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
5008 | ||
5009 | ||
5010 | /* On frame F, return an array of XColor structures describing image | |
5011 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
5012 | non-zero means also fill the red/green/blue members of the XColor | |
5013 | structures. Value is a pointer to the array of XColors structures, | |
5014 | allocated with xmalloc; it must be freed by the caller. */ | |
5015 | ||
5016 | static XColor * | |
5017 | x_to_xcolors (f, img, rgb_p) | |
5018 | struct frame *f; | |
5019 | struct image *img; | |
5020 | int rgb_p; | |
5021 | { | |
5022 | int x, y; | |
5023 | XColor *colors, *p; | |
5024 | XImagePtr_or_DC ximg; | |
5025 | #ifdef HAVE_NTGUI | |
5026 | HDC hdc; | |
5027 | HGDIOBJ prev; | |
5028 | #endif /* HAVE_NTGUI */ | |
5029 | ||
5030 | colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors); | |
5031 | ||
5032 | #ifndef HAVE_NTGUI | |
5033 | /* Get the X image IMG->pixmap. */ | |
5034 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
5035 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
5036 | #else | |
5037 | /* Load the image into a memory device context. */ | |
5038 | hdc = get_frame_dc (f); | |
5039 | ximg = CreateCompatibleDC (hdc); | |
5040 | release_frame_dc (f, hdc); | |
5041 | prev = SelectObject (ximg, img->pixmap); | |
5042 | #endif /* HAVE_NTGUI */ | |
5043 | ||
5044 | /* Fill the `pixel' members of the XColor array. I wished there | |
5045 | were an easy and portable way to circumvent XGetPixel. */ | |
5046 | p = colors; | |
5047 | for (y = 0; y < img->height; ++y) | |
5048 | { | |
5049 | XColor *row = p; | |
5050 | ||
5051 | #ifdef HAVE_X_WINDOWS | |
5052 | for (x = 0; x < img->width; ++x, ++p) | |
5053 | p->pixel = XGetPixel (ximg, x, y); | |
5054 | if (rgb_p) | |
5055 | x_query_colors (f, row, img->width); | |
5056 | ||
5057 | #else | |
5058 | ||
5059 | for (x = 0; x < img->width; ++x, ++p) | |
5060 | { | |
5061 | /* W32_TODO: palette support needed here? */ | |
5062 | p->pixel = GET_PIXEL (ximg, x, y); | |
5063 | if (rgb_p) | |
5064 | { | |
5065 | #ifdef MAC_OS | |
5066 | p->red = RED16_FROM_ULONG (p->pixel); | |
5067 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
5068 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
5069 | #endif /* MAC_OS */ | |
5070 | #ifdef HAVE_NTGUI | |
5071 | p->red = 256 * GetRValue (p->pixel); | |
5072 | p->green = 256 * GetGValue (p->pixel); | |
5073 | p->blue = 256 * GetBValue (p->pixel); | |
5074 | #endif /* HAVE_NTGUI */ | |
5075 | } | |
5076 | } | |
5077 | #endif /* HAVE_X_WINDOWS */ | |
5078 | } | |
5079 | ||
5080 | Destroy_Image (ximg, prev); | |
5081 | ||
5082 | return colors; | |
5083 | } | |
5084 | ||
5085 | #ifdef HAVE_NTGUI | |
5086 | ||
5087 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
5088 | created with CreateDIBSection, with the pointer to the bit values | |
5089 | stored in ximg->data. */ | |
5090 | ||
3046a84b JB |
5091 | static void |
5092 | XPutPixel (ximg, x, y, color) | |
4ef0d4d0 KS |
5093 | XImagePtr ximg; |
5094 | int x, y; | |
5095 | COLORREF color; | |
5096 | { | |
5097 | int width = ximg->info.bmiHeader.biWidth; | |
5098 | int height = ximg->info.bmiHeader.biHeight; | |
5099 | unsigned char * pixel; | |
5100 | ||
5101 | /* True color images. */ | |
5102 | if (ximg->info.bmiHeader.biBitCount == 24) | |
5103 | { | |
5104 | int rowbytes = width * 3; | |
5105 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
5106 | if (rowbytes % 4) | |
5107 | rowbytes += 4 - (rowbytes % 4); | |
5108 | ||
5109 | pixel = ximg->data + y * rowbytes + x * 3; | |
5110 | /* Windows bitmaps are in BGR order. */ | |
5111 | *pixel = GetBValue (color); | |
5112 | *(pixel + 1) = GetGValue (color); | |
5113 | *(pixel + 2) = GetRValue (color); | |
5114 | } | |
5115 | /* Monochrome images. */ | |
5116 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
5117 | { | |
5118 | int rowbytes = width / 8; | |
5119 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
5120 | if (rowbytes % 4) | |
5121 | rowbytes += 4 - (rowbytes % 4); | |
5122 | pixel = ximg->data + y * rowbytes + x / 8; | |
5123 | /* Filter out palette info. */ | |
5124 | if (color & 0x00ffffff) | |
5125 | *pixel = *pixel | (1 << x % 8); | |
5126 | else | |
5127 | *pixel = *pixel & ~(1 << x % 8); | |
5128 | } | |
5129 | else | |
5130 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
5131 | } | |
5132 | ||
5133 | #endif /* HAVE_NTGUI */ | |
5134 | ||
5135 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
5136 | RGB members are set. F is the frame on which this all happens. | |
5137 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
5138 | ||
5139 | static void | |
5140 | x_from_xcolors (f, img, colors) | |
5141 | struct frame *f; | |
5142 | struct image *img; | |
5143 | XColor *colors; | |
5144 | { | |
5145 | int x, y; | |
5146 | XImagePtr oimg; | |
5147 | Pixmap pixmap; | |
5148 | XColor *p; | |
5149 | ||
5150 | init_color_table (); | |
5151 | ||
5152 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
5153 | &oimg, &pixmap); | |
5154 | p = colors; | |
5155 | for (y = 0; y < img->height; ++y) | |
5156 | for (x = 0; x < img->width; ++x, ++p) | |
5157 | { | |
5158 | unsigned long pixel; | |
5159 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
5160 | XPutPixel (oimg, x, y, pixel); | |
5161 | } | |
5162 | ||
5163 | xfree (colors); | |
5164 | x_clear_image_1 (f, img, 1, 0, 1); | |
5165 | ||
5166 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
5167 | x_destroy_x_image (oimg); | |
5168 | img->pixmap = pixmap; | |
5169 | #ifdef COLOR_TABLE_SUPPORT | |
5170 | img->colors = colors_in_color_table (&img->ncolors); | |
5171 | free_color_table (); | |
5172 | #endif /* COLOR_TABLE_SUPPORT */ | |
5173 | } | |
5174 | ||
5175 | ||
5176 | /* On frame F, perform edge-detection on image IMG. | |
5177 | ||
5178 | MATRIX is a nine-element array specifying the transformation | |
5179 | matrix. See emboss_matrix for an example. | |
5180 | ||
5181 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
5182 | outgoing image. */ | |
5183 | ||
5184 | static void | |
5185 | x_detect_edges (f, img, matrix, color_adjust) | |
5186 | struct frame *f; | |
5187 | struct image *img; | |
5188 | int matrix[9], color_adjust; | |
5189 | { | |
5190 | XColor *colors = x_to_xcolors (f, img, 1); | |
5191 | XColor *new, *p; | |
5192 | int x, y, i, sum; | |
5193 | ||
5194 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 5195 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
5196 | |
5197 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
5198 | ||
5199 | new = (XColor *) xmalloc (img->width * img->height * sizeof *new); | |
5200 | ||
5201 | for (y = 0; y < img->height; ++y) | |
5202 | { | |
5203 | p = COLOR (new, 0, y); | |
5204 | p->red = p->green = p->blue = 0xffff/2; | |
5205 | p = COLOR (new, img->width - 1, y); | |
5206 | p->red = p->green = p->blue = 0xffff/2; | |
5207 | } | |
5208 | ||
5209 | for (x = 1; x < img->width - 1; ++x) | |
5210 | { | |
5211 | p = COLOR (new, x, 0); | |
5212 | p->red = p->green = p->blue = 0xffff/2; | |
5213 | p = COLOR (new, x, img->height - 1); | |
5214 | p->red = p->green = p->blue = 0xffff/2; | |
5215 | } | |
5216 | ||
5217 | for (y = 1; y < img->height - 1; ++y) | |
5218 | { | |
5219 | p = COLOR (new, 1, y); | |
5220 | ||
5221 | for (x = 1; x < img->width - 1; ++x, ++p) | |
5222 | { | |
5223 | int r, g, b, y1, x1; | |
5224 | ||
5225 | r = g = b = i = 0; | |
5226 | for (y1 = y - 1; y1 < y + 2; ++y1) | |
5227 | for (x1 = x - 1; x1 < x + 2; ++x1, ++i) | |
5228 | if (matrix[i]) | |
5229 | { | |
5230 | XColor *t = COLOR (colors, x1, y1); | |
5231 | r += matrix[i] * t->red; | |
5232 | g += matrix[i] * t->green; | |
5233 | b += matrix[i] * t->blue; | |
5234 | } | |
5235 | ||
5236 | r = (r / sum + color_adjust) & 0xffff; | |
5237 | g = (g / sum + color_adjust) & 0xffff; | |
5238 | b = (b / sum + color_adjust) & 0xffff; | |
5239 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
5240 | } | |
5241 | } | |
5242 | ||
5243 | xfree (colors); | |
5244 | x_from_xcolors (f, img, new); | |
5245 | ||
5246 | #undef COLOR | |
5247 | } | |
5248 | ||
5249 | ||
5250 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
5251 | on frame F. */ | |
5252 | ||
5253 | static void | |
5254 | x_emboss (f, img) | |
5255 | struct frame *f; | |
5256 | struct image *img; | |
5257 | { | |
5258 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
5259 | } | |
5260 | ||
5261 | ||
5262 | /* Transform image IMG which is used on frame F with a Laplace | |
5263 | edge-detection algorithm. The result is an image that can be used | |
5264 | to draw disabled buttons, for example. */ | |
5265 | ||
5266 | static void | |
5267 | x_laplace (f, img) | |
5268 | struct frame *f; | |
5269 | struct image *img; | |
5270 | { | |
5271 | x_detect_edges (f, img, laplace_matrix, 45000); | |
5272 | } | |
5273 | ||
5274 | ||
5275 | /* Perform edge-detection on image IMG on frame F, with specified | |
5276 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
5277 | ||
5278 | MATRIX must be either | |
5279 | ||
5280 | - a list of at least 9 numbers in row-major form | |
5281 | - a vector of at least 9 numbers | |
5282 | ||
5283 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
5284 | number. */ | |
5285 | ||
5286 | static void | |
5287 | x_edge_detection (f, img, matrix, color_adjust) | |
5288 | struct frame *f; | |
5289 | struct image *img; | |
5290 | Lisp_Object matrix, color_adjust; | |
5291 | { | |
5292 | int i = 0; | |
5293 | int trans[9]; | |
5294 | ||
5295 | if (CONSP (matrix)) | |
5296 | { | |
5297 | for (i = 0; | |
5298 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
5299 | ++i, matrix = XCDR (matrix)) | |
5300 | trans[i] = XFLOATINT (XCAR (matrix)); | |
5301 | } | |
5302 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
5303 | { | |
5304 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
5305 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
5306 | } | |
5307 | ||
5308 | if (NILP (color_adjust)) | |
5309 | color_adjust = make_number (0xffff / 2); | |
5310 | ||
5311 | if (i == 9 && NUMBERP (color_adjust)) | |
5312 | x_detect_edges (f, img, trans, (int) XFLOATINT (color_adjust)); | |
5313 | } | |
5314 | ||
5315 | ||
5316 | /* Transform image IMG on frame F so that it looks disabled. */ | |
5317 | ||
5318 | static void | |
5319 | x_disable_image (f, img) | |
5320 | struct frame *f; | |
5321 | struct image *img; | |
5322 | { | |
5323 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
5324 | #ifdef HAVE_NTGUI | |
5325 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
5326 | #else | |
5327 | int n_planes = dpyinfo->n_planes; | |
5328 | #endif /* HAVE_NTGUI */ | |
5329 | ||
5330 | if (n_planes >= 2) | |
5331 | { | |
5332 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
5333 | drawing such images with a stipple can look very odd, so | |
5334 | we're using this method instead. */ | |
5335 | XColor *colors = x_to_xcolors (f, img, 1); | |
5336 | XColor *p, *end; | |
5337 | const int h = 15000; | |
5338 | const int l = 30000; | |
5339 | ||
5340 | for (p = colors, end = colors + img->width * img->height; | |
5341 | p < end; | |
5342 | ++p) | |
5343 | { | |
5344 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
5345 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
5346 | p->red = p->green = p->blue = i2; | |
5347 | } | |
5348 | ||
5349 | x_from_xcolors (f, img, colors); | |
5350 | } | |
5351 | ||
5352 | /* Draw a cross over the disabled image, if we must or if we | |
5353 | should. */ | |
5354 | if (n_planes < 2 || cross_disabled_images) | |
5355 | { | |
5356 | #ifndef HAVE_NTGUI | |
5357 | Display *dpy = FRAME_X_DISPLAY (f); | |
5358 | GC gc; | |
5359 | ||
5360 | #ifdef MAC_OS | |
9ecf6403 | 5361 | #define MaskForeground(f) PIX_MASK_DRAW |
4ef0d4d0 | 5362 | #else |
4ef0d4d0 KS |
5363 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
5364 | #endif | |
5365 | ||
ae8279db | 5366 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); |
4ef0d4d0 KS |
5367 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
5368 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
5369 | img->width - 1, img->height - 1); | |
5370 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
5371 | img->width - 1, 0); | |
5372 | XFreeGC (dpy, gc); | |
5373 | ||
5374 | if (img->mask) | |
5375 | { | |
ae8279db | 5376 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
5377 | XSetForeground (dpy, gc, MaskForeground (f)); |
5378 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
5379 | img->width - 1, img->height - 1); | |
5380 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
5381 | img->width - 1, 0); | |
5382 | XFreeGC (dpy, gc); | |
5383 | } | |
5384 | #else | |
5385 | HDC hdc, bmpdc; | |
5386 | HGDIOBJ prev; | |
5387 | ||
5388 | hdc = get_frame_dc (f); | |
5389 | bmpdc = CreateCompatibleDC (hdc); | |
5390 | release_frame_dc (f, hdc); | |
5391 | ||
5392 | prev = SelectObject (bmpdc, img->pixmap); | |
5393 | ||
5394 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
5395 | MoveToEx (bmpdc, 0, 0, NULL); | |
5396 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5397 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5398 | LineTo (bmpdc, img->width - 1, 0); | |
5399 | ||
5400 | if (img->mask) | |
5401 | { | |
5402 | SelectObject (bmpdc, img->mask); | |
5403 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
5404 | MoveToEx (bmpdc, 0, 0, NULL); | |
5405 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5406 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5407 | LineTo (bmpdc, img->width - 1, 0); | |
5408 | } | |
5409 | SelectObject (bmpdc, prev); | |
5410 | DeleteDC (bmpdc); | |
5411 | #endif /* HAVE_NTGUI */ | |
5412 | } | |
5413 | } | |
5414 | ||
5415 | ||
5416 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
5417 | name of an image file, for error messages. HOW determines how to | |
5418 | determine the background color of IMG. If it is a list '(R G B)', | |
5419 | with R, G, and B being integers >= 0, take that as the color of the | |
5420 | background. Otherwise, determine the background color of IMG | |
5421 | heuristically. Value is non-zero if successful. */ | |
5422 | ||
5423 | static int | |
5424 | x_build_heuristic_mask (f, img, how) | |
5425 | struct frame *f; | |
5426 | struct image *img; | |
5427 | Lisp_Object how; | |
5428 | { | |
5429 | XImagePtr_or_DC ximg; | |
5430 | #ifndef HAVE_NTGUI | |
5431 | XImagePtr mask_img; | |
5432 | #else | |
5433 | HDC frame_dc; | |
5434 | HGDIOBJ prev; | |
5435 | char *mask_img; | |
5436 | int row_width; | |
5437 | #endif /* HAVE_NTGUI */ | |
5438 | int x, y, rc, use_img_background; | |
5439 | unsigned long bg = 0; | |
5440 | ||
5441 | if (img->mask) | |
5442 | { | |
5443 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
5444 | img->mask = NO_PIXMAP; | |
5445 | img->background_transparent_valid = 0; | |
5446 | } | |
5447 | ||
5448 | #ifndef HAVE_NTGUI | |
5449 | /* Create an image and pixmap serving as mask. */ | |
5450 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
5451 | &mask_img, &img->mask); | |
5452 | if (!rc) | |
5453 | return 0; | |
5454 | ||
5455 | /* Get the X image of IMG->pixmap. */ | |
5456 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
5457 | img->width, img->height, | |
5458 | ~0, ZPixmap); | |
5459 | #else | |
5460 | /* Create the bit array serving as mask. */ | |
5461 | row_width = (img->width + 7) / 8; | |
5462 | mask_img = xmalloc (row_width * img->height); | |
5463 | bzero (mask_img, row_width * img->height); | |
5464 | ||
5465 | /* Create a memory device context for IMG->pixmap. */ | |
5466 | frame_dc = get_frame_dc (f); | |
5467 | ximg = CreateCompatibleDC (frame_dc); | |
5468 | release_frame_dc (f, frame_dc); | |
5469 | prev = SelectObject (ximg, img->pixmap); | |
5470 | #endif /* HAVE_NTGUI */ | |
5471 | ||
5472 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
5473 | take that as color. Otherwise, use the image's background color. */ | |
5474 | use_img_background = 1; | |
5475 | ||
5476 | if (CONSP (how)) | |
5477 | { | |
5478 | int rgb[3], i; | |
5479 | ||
5480 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
5481 | { | |
5482 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
5483 | how = XCDR (how); | |
5484 | } | |
5485 | ||
5486 | if (i == 3 && NILP (how)) | |
5487 | { | |
5488 | char color_name[30]; | |
5489 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
5490 | bg = ( | |
5491 | #ifdef HAVE_NTGUI | |
5492 | 0x00ffffff & /* Filter out palette info. */ | |
5493 | #endif /* HAVE_NTGUI */ | |
5494 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
5495 | use_img_background = 0; | |
5496 | } | |
5497 | } | |
5498 | ||
5499 | if (use_img_background) | |
6ac3c7bb | 5500 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
5501 | |
5502 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
5503 | from the background color bg. */ | |
5504 | #ifndef HAVE_NTGUI | |
5505 | for (y = 0; y < img->height; ++y) | |
5506 | for (x = 0; x < img->width; ++x) | |
5507 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg | |
9ecf6403 | 5508 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
4ef0d4d0 KS |
5509 | |
5510 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5511 | image_background_transparent (img, f, mask_img); | |
5512 | ||
5513 | /* Put mask_img into img->mask. */ | |
5514 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5515 | x_destroy_x_image (mask_img); | |
5516 | ||
5517 | #else | |
5518 | for (y = 0; y < img->height; ++y) | |
5519 | for (x = 0; x < img->width; ++x) | |
5520 | { | |
5521 | COLORREF p = GetPixel (ximg, x, y); | |
5522 | if (p != bg) | |
5523 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
5524 | } | |
5525 | ||
5526 | /* Create the mask image. */ | |
5527 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
5528 | mask_img); | |
5529 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5530 | SelectObject (ximg, img->mask); | |
5531 | image_background_transparent (img, f, ximg); | |
5532 | ||
5533 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
5534 | xfree (mask_img); | |
5535 | #endif /* HAVE_NTGUI */ | |
5536 | ||
5537 | Destroy_Image (ximg, prev); | |
5538 | ||
5539 | return 1; | |
5540 | } | |
5541 | ||
5542 | \f | |
5543 | /*********************************************************************** | |
5544 | PBM (mono, gray, color) | |
5545 | ***********************************************************************/ | |
5546 | ||
5547 | static int pbm_image_p P_ ((Lisp_Object object)); | |
5548 | static int pbm_load P_ ((struct frame *f, struct image *img)); | |
5549 | static int pbm_scan_number P_ ((unsigned char **, unsigned char *)); | |
5550 | ||
5551 | /* The symbol `pbm' identifying images of this type. */ | |
5552 | ||
5553 | Lisp_Object Qpbm; | |
5554 | ||
5555 | /* Indices of image specification fields in gs_format, below. */ | |
5556 | ||
5557 | enum pbm_keyword_index | |
5558 | { | |
5559 | PBM_TYPE, | |
5560 | PBM_FILE, | |
5561 | PBM_DATA, | |
5562 | PBM_ASCENT, | |
5563 | PBM_MARGIN, | |
5564 | PBM_RELIEF, | |
5565 | PBM_ALGORITHM, | |
5566 | PBM_HEURISTIC_MASK, | |
5567 | PBM_MASK, | |
5568 | PBM_FOREGROUND, | |
5569 | PBM_BACKGROUND, | |
5570 | PBM_LAST | |
5571 | }; | |
5572 | ||
5573 | /* Vector of image_keyword structures describing the format | |
5574 | of valid user-defined image specifications. */ | |
5575 | ||
5576 | static struct image_keyword pbm_format[PBM_LAST] = | |
5577 | { | |
5578 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5579 | {":file", IMAGE_STRING_VALUE, 0}, | |
5580 | {":data", IMAGE_STRING_VALUE, 0}, | |
5581 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5582 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5583 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5584 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5585 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5586 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5587 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
5588 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5589 | }; | |
5590 | ||
5591 | /* Structure describing the image type `pbm'. */ | |
5592 | ||
5593 | static struct image_type pbm_type = | |
5594 | { | |
5595 | &Qpbm, | |
5596 | pbm_image_p, | |
5597 | pbm_load, | |
5598 | x_clear_image, | |
5599 | NULL | |
5600 | }; | |
5601 | ||
5602 | ||
5603 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
5604 | ||
5605 | static int | |
5606 | pbm_image_p (object) | |
5607 | Lisp_Object object; | |
5608 | { | |
5609 | struct image_keyword fmt[PBM_LAST]; | |
5610 | ||
5611 | bcopy (pbm_format, fmt, sizeof fmt); | |
5612 | ||
5613 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
5614 | return 0; | |
5615 | ||
5616 | /* Must specify either :data or :file. */ | |
5617 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
5618 | } | |
5619 | ||
5620 | ||
5621 | /* Scan a decimal number from *S and return it. Advance *S while | |
5622 | reading the number. END is the end of the string. Value is -1 at | |
5623 | end of input. */ | |
5624 | ||
5625 | static int | |
5626 | pbm_scan_number (s, end) | |
5627 | unsigned char **s, *end; | |
5628 | { | |
5629 | int c = 0, val = -1; | |
5630 | ||
5631 | while (*s < end) | |
5632 | { | |
5633 | /* Skip white-space. */ | |
5634 | while (*s < end && (c = *(*s)++, isspace (c))) | |
5635 | ; | |
5636 | ||
5637 | if (c == '#') | |
5638 | { | |
5639 | /* Skip comment to end of line. */ | |
5640 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5641 | ; | |
5642 | } | |
5643 | else if (isdigit (c)) | |
5644 | { | |
5645 | /* Read decimal number. */ | |
5646 | val = c - '0'; | |
5647 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
5648 | val = 10 * val + c - '0'; | |
5649 | break; | |
5650 | } | |
5651 | else | |
5652 | break; | |
5653 | } | |
5654 | ||
5655 | return val; | |
5656 | } | |
5657 | ||
5658 | ||
5659 | #ifdef HAVE_NTGUI | |
5660 | #if 0 /* Unused. ++kfs */ | |
5661 | ||
5662 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5663 | with xmalloc holding FILE's contents. Value is null if an error | |
5664 | occurred. *SIZE is set to the size of the file. */ | |
5665 | ||
5666 | static char * | |
5667 | pbm_read_file (file, size) | |
5668 | Lisp_Object file; | |
5669 | int *size; | |
5670 | { | |
5671 | FILE *fp = NULL; | |
5672 | char *buf = NULL; | |
5673 | struct stat st; | |
5674 | ||
5675 | if (stat (SDATA (file), &st) == 0 | |
5676 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
5677 | && (buf = (char *) xmalloc (st.st_size), | |
5678 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5679 | { | |
5680 | *size = st.st_size; | |
5681 | fclose (fp); | |
5682 | } | |
5683 | else | |
5684 | { | |
5685 | if (fp) | |
5686 | fclose (fp); | |
5687 | if (buf) | |
5688 | { | |
5689 | xfree (buf); | |
5690 | buf = NULL; | |
5691 | } | |
5692 | } | |
5693 | ||
5694 | return buf; | |
5695 | } | |
5696 | #endif | |
5697 | #endif /* HAVE_NTGUI */ | |
5698 | ||
5699 | /* Load PBM image IMG for use on frame F. */ | |
5700 | ||
5701 | static int | |
5702 | pbm_load (f, img) | |
5703 | struct frame *f; | |
5704 | struct image *img; | |
5705 | { | |
5706 | int raw_p, x, y; | |
5707 | int width, height, max_color_idx = 0; | |
5708 | XImagePtr ximg; | |
5709 | Lisp_Object file, specified_file; | |
5710 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
5711 | struct gcpro gcpro1; | |
5712 | unsigned char *contents = NULL; | |
5713 | unsigned char *end, *p; | |
5714 | int size; | |
5715 | ||
5716 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5717 | file = Qnil; | |
5718 | GCPRO1 (file); | |
5719 | ||
5720 | if (STRINGP (specified_file)) | |
5721 | { | |
5722 | file = x_find_image_file (specified_file); | |
5723 | if (!STRINGP (file)) | |
5724 | { | |
5725 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
5726 | UNGCPRO; | |
5727 | return 0; | |
5728 | } | |
5729 | ||
5730 | contents = slurp_file (SDATA (file), &size); | |
5731 | if (contents == NULL) | |
5732 | { | |
5733 | image_error ("Error reading `%s'", file, Qnil); | |
5734 | UNGCPRO; | |
5735 | return 0; | |
5736 | } | |
5737 | ||
5738 | p = contents; | |
5739 | end = contents + size; | |
5740 | } | |
5741 | else | |
5742 | { | |
5743 | Lisp_Object data; | |
5744 | data = image_spec_value (img->spec, QCdata, NULL); | |
5745 | p = SDATA (data); | |
5746 | end = p + SBYTES (data); | |
5747 | } | |
5748 | ||
5749 | /* Check magic number. */ | |
5750 | if (end - p < 2 || *p++ != 'P') | |
5751 | { | |
5752 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5753 | error: | |
5754 | xfree (contents); | |
5755 | UNGCPRO; | |
5756 | return 0; | |
5757 | } | |
5758 | ||
5759 | switch (*p++) | |
5760 | { | |
5761 | case '1': | |
5762 | raw_p = 0, type = PBM_MONO; | |
5763 | break; | |
5764 | ||
5765 | case '2': | |
5766 | raw_p = 0, type = PBM_GRAY; | |
5767 | break; | |
5768 | ||
5769 | case '3': | |
5770 | raw_p = 0, type = PBM_COLOR; | |
5771 | break; | |
5772 | ||
5773 | case '4': | |
5774 | raw_p = 1, type = PBM_MONO; | |
5775 | break; | |
5776 | ||
5777 | case '5': | |
5778 | raw_p = 1, type = PBM_GRAY; | |
5779 | break; | |
5780 | ||
5781 | case '6': | |
5782 | raw_p = 1, type = PBM_COLOR; | |
5783 | break; | |
5784 | ||
5785 | default: | |
5786 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5787 | goto error; | |
5788 | } | |
5789 | ||
5790 | /* Read width, height, maximum color-component. Characters | |
5791 | starting with `#' up to the end of a line are ignored. */ | |
5792 | width = pbm_scan_number (&p, end); | |
5793 | height = pbm_scan_number (&p, end); | |
5794 | ||
5795 | if (type != PBM_MONO) | |
5796 | { | |
5797 | max_color_idx = pbm_scan_number (&p, end); | |
5798 | if (raw_p && max_color_idx > 255) | |
5799 | max_color_idx = 255; | |
5800 | } | |
5801 | ||
f1f25b99 | 5802 | if (!check_image_size (f, width, height) |
4ef0d4d0 KS |
5803 | || (type != PBM_MONO && max_color_idx < 0)) |
5804 | goto error; | |
5805 | ||
5806 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5807 | &ximg, &img->pixmap)) | |
5808 | goto error; | |
5809 | ||
5810 | /* Initialize the color hash table. */ | |
5811 | init_color_table (); | |
5812 | ||
5813 | if (type == PBM_MONO) | |
5814 | { | |
5815 | int c = 0, g; | |
5816 | struct image_keyword fmt[PBM_LAST]; | |
5817 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5818 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5819 | ||
5820 | /* Parse the image specification. */ | |
5821 | bcopy (pbm_format, fmt, sizeof fmt); | |
5822 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); | |
5823 | ||
5824 | /* Get foreground and background colors, maybe allocate colors. */ | |
5825 | if (fmt[PBM_FOREGROUND].count | |
5826 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5827 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5828 | if (fmt[PBM_BACKGROUND].count | |
5829 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5830 | { | |
5831 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5832 | img->background = bg; | |
5833 | img->background_valid = 1; | |
5834 | } | |
5835 | ||
5836 | for (y = 0; y < height; ++y) | |
5837 | for (x = 0; x < width; ++x) | |
5838 | { | |
5839 | if (raw_p) | |
5840 | { | |
5841 | if ((x & 7) == 0) | |
c295e710 CY |
5842 | { |
5843 | if (p >= end) | |
5844 | { | |
5845 | x_destroy_x_image (ximg); | |
5846 | x_clear_image (f, img); | |
5847 | image_error ("Invalid image size in image `%s'", | |
5848 | img->spec, Qnil); | |
5849 | goto error; | |
5850 | } | |
5851 | c = *p++; | |
5852 | } | |
4ef0d4d0 KS |
5853 | g = c & 0x80; |
5854 | c <<= 1; | |
5855 | } | |
5856 | else | |
5857 | g = pbm_scan_number (&p, end); | |
5858 | ||
5859 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5860 | } | |
5861 | } | |
5862 | else | |
5863 | { | |
fb0b0862 CY |
5864 | if (raw_p |
5865 | && ((type == PBM_GRAY) | |
5866 | ? (p + height * width > end) | |
5867 | : (p + 3 * height * width > end))) | |
39e653ea CY |
5868 | { |
5869 | x_destroy_x_image (ximg); | |
fb0b0862 | 5870 | x_clear_image (f, img); |
39e653ea CY |
5871 | image_error ("Invalid image size in image `%s'", |
5872 | img->spec, Qnil); | |
5873 | goto error; | |
5874 | } | |
5875 | ||
4ef0d4d0 KS |
5876 | for (y = 0; y < height; ++y) |
5877 | for (x = 0; x < width; ++x) | |
5878 | { | |
5879 | int r, g, b; | |
5880 | ||
5881 | if (type == PBM_GRAY) | |
5882 | r = g = b = raw_p ? *p++ : pbm_scan_number (&p, end); | |
5883 | else if (raw_p) | |
5884 | { | |
5885 | r = *p++; | |
5886 | g = *p++; | |
5887 | b = *p++; | |
5888 | } | |
5889 | else | |
5890 | { | |
5891 | r = pbm_scan_number (&p, end); | |
5892 | g = pbm_scan_number (&p, end); | |
5893 | b = pbm_scan_number (&p, end); | |
5894 | } | |
5895 | ||
5896 | if (r < 0 || g < 0 || b < 0) | |
5897 | { | |
5898 | x_destroy_x_image (ximg); | |
5899 | image_error ("Invalid pixel value in image `%s'", | |
5900 | img->spec, Qnil); | |
5901 | goto error; | |
5902 | } | |
5903 | ||
5904 | /* RGB values are now in the range 0..max_color_idx. | |
5905 | Scale this to the range 0..0xffff supported by X. */ | |
5906 | r = (double) r * 65535 / max_color_idx; | |
5907 | g = (double) g * 65535 / max_color_idx; | |
5908 | b = (double) b * 65535 / max_color_idx; | |
5909 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5910 | } | |
5911 | } | |
5912 | ||
5913 | #ifdef COLOR_TABLE_SUPPORT | |
5914 | /* Store in IMG->colors the colors allocated for the image, and | |
5915 | free the color table. */ | |
5916 | img->colors = colors_in_color_table (&img->ncolors); | |
5917 | free_color_table (); | |
5918 | #endif /* COLOR_TABLE_SUPPORT */ | |
5919 | ||
5920 | img->width = width; | |
5921 | img->height = height; | |
5922 | ||
5923 | /* Maybe fill in the background field while we have ximg handy. */ | |
5924 | ||
5925 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5926 | /* Casting avoids a GCC warning. */ |
5927 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5928 | |
5929 | /* Put the image into a pixmap. */ | |
5930 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5931 | x_destroy_x_image (ximg); | |
5932 | ||
5933 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5934 | img->width = width; |
4ef0d4d0 KS |
5935 | img->height = height; */ |
5936 | ||
5937 | UNGCPRO; | |
5938 | xfree (contents); | |
5939 | return 1; | |
5940 | } | |
5941 | ||
5942 | \f | |
5943 | /*********************************************************************** | |
5944 | PNG | |
5945 | ***********************************************************************/ | |
5946 | ||
5947 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
5948 | ||
5949 | /* Function prototypes. */ | |
5950 | ||
5951 | static int png_image_p P_ ((Lisp_Object object)); | |
5952 | static int png_load P_ ((struct frame *f, struct image *img)); | |
5953 | ||
5954 | /* The symbol `png' identifying images of this type. */ | |
5955 | ||
5956 | Lisp_Object Qpng; | |
5957 | ||
5958 | /* Indices of image specification fields in png_format, below. */ | |
5959 | ||
5960 | enum png_keyword_index | |
5961 | { | |
5962 | PNG_TYPE, | |
5963 | PNG_DATA, | |
5964 | PNG_FILE, | |
5965 | PNG_ASCENT, | |
5966 | PNG_MARGIN, | |
5967 | PNG_RELIEF, | |
5968 | PNG_ALGORITHM, | |
5969 | PNG_HEURISTIC_MASK, | |
5970 | PNG_MASK, | |
5971 | PNG_BACKGROUND, | |
5972 | PNG_LAST | |
5973 | }; | |
5974 | ||
5975 | /* Vector of image_keyword structures describing the format | |
5976 | of valid user-defined image specifications. */ | |
5977 | ||
5978 | static struct image_keyword png_format[PNG_LAST] = | |
5979 | { | |
5980 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5981 | {":data", IMAGE_STRING_VALUE, 0}, | |
5982 | {":file", IMAGE_STRING_VALUE, 0}, | |
5983 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5984 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5985 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5986 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5987 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5988 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5989 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5990 | }; | |
5991 | ||
5992 | /* Structure describing the image type `png'. */ | |
5993 | ||
5994 | static struct image_type png_type = | |
5995 | { | |
5996 | &Qpng, | |
5997 | png_image_p, | |
5998 | png_load, | |
5999 | x_clear_image, | |
6000 | NULL | |
6001 | }; | |
6002 | ||
6003 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
6004 | ||
6005 | static int | |
6006 | png_image_p (object) | |
6007 | Lisp_Object object; | |
6008 | { | |
6009 | struct image_keyword fmt[PNG_LAST]; | |
6010 | bcopy (png_format, fmt, sizeof fmt); | |
6011 | ||
6012 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
6013 | return 0; | |
6014 | ||
6015 | /* Must specify either the :data or :file keyword. */ | |
6016 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
6017 | } | |
6018 | ||
6019 | #endif /* HAVE_PNG || MAC_OS */ | |
6020 | ||
6021 | ||
6022 | #ifdef HAVE_PNG | |
6023 | ||
6024 | #if defined HAVE_LIBPNG_PNG_H | |
6025 | # include <libpng/png.h> | |
6026 | #else | |
6027 | # include <png.h> | |
6028 | #endif | |
6029 | ||
6030 | #ifdef HAVE_NTGUI | |
6031 | /* PNG library details. */ | |
6032 | ||
6033 | DEF_IMGLIB_FN (png_get_io_ptr); | |
6034 | DEF_IMGLIB_FN (png_check_sig); | |
6035 | DEF_IMGLIB_FN (png_create_read_struct); | |
6036 | DEF_IMGLIB_FN (png_create_info_struct); | |
6037 | DEF_IMGLIB_FN (png_destroy_read_struct); | |
6038 | DEF_IMGLIB_FN (png_set_read_fn); | |
4ef0d4d0 KS |
6039 | DEF_IMGLIB_FN (png_set_sig_bytes); |
6040 | DEF_IMGLIB_FN (png_read_info); | |
6041 | DEF_IMGLIB_FN (png_get_IHDR); | |
6042 | DEF_IMGLIB_FN (png_get_valid); | |
6043 | DEF_IMGLIB_FN (png_set_strip_16); | |
6044 | DEF_IMGLIB_FN (png_set_expand); | |
6045 | DEF_IMGLIB_FN (png_set_gray_to_rgb); | |
6046 | DEF_IMGLIB_FN (png_set_background); | |
6047 | DEF_IMGLIB_FN (png_get_bKGD); | |
6048 | DEF_IMGLIB_FN (png_read_update_info); | |
6049 | DEF_IMGLIB_FN (png_get_channels); | |
6050 | DEF_IMGLIB_FN (png_get_rowbytes); | |
6051 | DEF_IMGLIB_FN (png_read_image); | |
6052 | DEF_IMGLIB_FN (png_read_end); | |
6053 | DEF_IMGLIB_FN (png_error); | |
6054 | ||
6055 | static int | |
0855eb52 | 6056 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6057 | { |
6058 | HMODULE library; | |
6059 | ||
4ef0d4d0 | 6060 | /* Try loading libpng under probable names. */ |
0855eb52 | 6061 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
6062 | return 0; |
6063 | ||
6064 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
6065 | LOAD_IMGLIB_FN (library, png_check_sig); | |
6066 | LOAD_IMGLIB_FN (library, png_create_read_struct); | |
6067 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
6068 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
6069 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
6070 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
6071 | LOAD_IMGLIB_FN (library, png_read_info); | |
6072 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
6073 | LOAD_IMGLIB_FN (library, png_get_valid); | |
6074 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
6075 | LOAD_IMGLIB_FN (library, png_set_expand); | |
6076 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
6077 | LOAD_IMGLIB_FN (library, png_set_background); | |
6078 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
6079 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
6080 | LOAD_IMGLIB_FN (library, png_get_channels); | |
6081 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
6082 | LOAD_IMGLIB_FN (library, png_read_image); | |
6083 | LOAD_IMGLIB_FN (library, png_read_end); | |
6084 | LOAD_IMGLIB_FN (library, png_error); | |
6085 | return 1; | |
6086 | } | |
6087 | #else | |
6088 | ||
6089 | #define fn_png_get_io_ptr png_get_io_ptr | |
6090 | #define fn_png_check_sig png_check_sig | |
6091 | #define fn_png_create_read_struct png_create_read_struct | |
6092 | #define fn_png_create_info_struct png_create_info_struct | |
6093 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
6094 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
6095 | #define fn_png_set_sig_bytes png_set_sig_bytes |
6096 | #define fn_png_read_info png_read_info | |
6097 | #define fn_png_get_IHDR png_get_IHDR | |
6098 | #define fn_png_get_valid png_get_valid | |
6099 | #define fn_png_set_strip_16 png_set_strip_16 | |
6100 | #define fn_png_set_expand png_set_expand | |
6101 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
6102 | #define fn_png_set_background png_set_background | |
6103 | #define fn_png_get_bKGD png_get_bKGD | |
6104 | #define fn_png_read_update_info png_read_update_info | |
6105 | #define fn_png_get_channels png_get_channels | |
6106 | #define fn_png_get_rowbytes png_get_rowbytes | |
6107 | #define fn_png_read_image png_read_image | |
6108 | #define fn_png_read_end png_read_end | |
6109 | #define fn_png_error png_error | |
6110 | ||
6111 | #endif /* HAVE_NTGUI */ | |
6112 | ||
6113 | /* Error and warning handlers installed when the PNG library | |
6114 | is initialized. */ | |
6115 | ||
6116 | static void | |
6117 | my_png_error (png_ptr, msg) | |
6118 | png_struct *png_ptr; | |
6119 | char *msg; | |
6120 | { | |
6121 | xassert (png_ptr != NULL); | |
6122 | image_error ("PNG error: %s", build_string (msg), Qnil); | |
6123 | longjmp (png_ptr->jmpbuf, 1); | |
6124 | } | |
6125 | ||
6126 | ||
6127 | static void | |
6128 | my_png_warning (png_ptr, msg) | |
6129 | png_struct *png_ptr; | |
6130 | char *msg; | |
6131 | { | |
6132 | xassert (png_ptr != NULL); | |
6133 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
6134 | } | |
6135 | ||
6136 | /* Memory source for PNG decoding. */ | |
6137 | ||
6138 | struct png_memory_storage | |
6139 | { | |
6140 | unsigned char *bytes; /* The data */ | |
6141 | size_t len; /* How big is it? */ | |
6142 | int index; /* Where are we? */ | |
6143 | }; | |
6144 | ||
6145 | ||
6146 | /* Function set as reader function when reading PNG image from memory. | |
6147 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
6148 | bytes from the input to DATA. */ | |
6149 | ||
6150 | static void | |
6151 | png_read_from_memory (png_ptr, data, length) | |
6152 | png_structp png_ptr; | |
6153 | png_bytep data; | |
6154 | png_size_t length; | |
6155 | { | |
6156 | struct png_memory_storage *tbr | |
6157 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
6158 | ||
6159 | if (length > tbr->len - tbr->index) | |
6160 | fn_png_error (png_ptr, "Read error"); | |
6161 | ||
6162 | bcopy (tbr->bytes + tbr->index, data, length); | |
6163 | tbr->index = tbr->index + length; | |
6164 | } | |
6165 | ||
b0da69a7 | 6166 | |
9a22a004 JB |
6167 | /* Function set as reader function when reading PNG image from a file. |
6168 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
6169 | bytes from the input to DATA. */ | |
6170 | ||
6171 | static void | |
6172 | png_read_from_file (png_ptr, data, length) | |
6173 | png_structp png_ptr; | |
6174 | png_bytep data; | |
6175 | png_size_t length; | |
6176 | { | |
6177 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
6178 | ||
6179 | if (fread (data, 1, length, fp) < length) | |
6180 | fn_png_error (png_ptr, "Read error"); | |
6181 | } | |
6182 | ||
6183 | ||
4ef0d4d0 KS |
6184 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
6185 | successful. */ | |
6186 | ||
6187 | static int | |
6188 | png_load (f, img) | |
6189 | struct frame *f; | |
6190 | struct image *img; | |
6191 | { | |
6192 | Lisp_Object file, specified_file; | |
6193 | Lisp_Object specified_data; | |
6194 | int x, y, i; | |
6195 | XImagePtr ximg, mask_img = NULL; | |
6196 | struct gcpro gcpro1; | |
6197 | png_struct *png_ptr = NULL; | |
6198 | png_info *info_ptr = NULL, *end_info = NULL; | |
6199 | FILE *volatile fp = NULL; | |
6200 | png_byte sig[8]; | |
6201 | png_byte * volatile pixels = NULL; | |
6202 | png_byte ** volatile rows = NULL; | |
6203 | png_uint_32 width, height; | |
6204 | int bit_depth, color_type, interlace_type; | |
6205 | png_byte channels; | |
6206 | png_uint_32 row_bytes; | |
6207 | int transparent_p; | |
6208 | double screen_gamma; | |
6209 | struct png_memory_storage tbr; /* Data to be read */ | |
6210 | ||
6211 | /* Find out what file to load. */ | |
6212 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6213 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
6214 | file = Qnil; | |
6215 | GCPRO1 (file); | |
6216 | ||
6217 | if (NILP (specified_data)) | |
6218 | { | |
6219 | file = x_find_image_file (specified_file); | |
6220 | if (!STRINGP (file)) | |
6221 | { | |
6222 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
6223 | UNGCPRO; | |
6224 | return 0; | |
6225 | } | |
6226 | ||
6227 | /* Open the image file. */ | |
6228 | fp = fopen (SDATA (file), "rb"); | |
6229 | if (!fp) | |
6230 | { | |
6231 | image_error ("Cannot open image file `%s'", file, Qnil); | |
6232 | UNGCPRO; | |
4ef0d4d0 KS |
6233 | return 0; |
6234 | } | |
6235 | ||
6236 | /* Check PNG signature. */ | |
6237 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
6238 | || !fn_png_check_sig (sig, sizeof sig)) | |
6239 | { | |
6240 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
6241 | UNGCPRO; | |
6242 | fclose (fp); | |
6243 | return 0; | |
6244 | } | |
6245 | } | |
6246 | else | |
6247 | { | |
6248 | /* Read from memory. */ | |
6249 | tbr.bytes = SDATA (specified_data); | |
6250 | tbr.len = SBYTES (specified_data); | |
6251 | tbr.index = 0; | |
6252 | ||
6253 | /* Check PNG signature. */ | |
6254 | if (tbr.len < sizeof sig | |
6255 | || !fn_png_check_sig (tbr.bytes, sizeof sig)) | |
6256 | { | |
6257 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
6258 | UNGCPRO; | |
6259 | return 0; | |
6260 | } | |
6261 | ||
6262 | /* Need to skip past the signature. */ | |
6263 | tbr.bytes += sizeof (sig); | |
6264 | } | |
6265 | ||
2e09fef1 EZ |
6266 | /* Initialize read and info structs for PNG lib. Casting return |
6267 | value avoids a GCC warning on W32. */ | |
6268 | png_ptr = (png_structp)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
6269 | NULL, my_png_error, | |
6270 | my_png_warning); | |
4ef0d4d0 KS |
6271 | if (!png_ptr) |
6272 | { | |
6273 | if (fp) fclose (fp); | |
6274 | UNGCPRO; | |
6275 | return 0; | |
6276 | } | |
6277 | ||
2e09fef1 EZ |
6278 | /* Casting return value avoids a GCC warning on W32. */ |
6279 | info_ptr = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6280 | if (!info_ptr) |
6281 | { | |
6282 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
6283 | if (fp) fclose (fp); | |
6284 | UNGCPRO; | |
6285 | return 0; | |
6286 | } | |
6287 | ||
2e09fef1 EZ |
6288 | /* Casting return value avoids a GCC warning on W32. */ |
6289 | end_info = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6290 | if (!end_info) |
6291 | { | |
6292 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
6293 | if (fp) fclose (fp); | |
6294 | UNGCPRO; | |
6295 | return 0; | |
6296 | } | |
6297 | ||
6298 | /* Set error jump-back. We come back here when the PNG library | |
6299 | detects an error. */ | |
6300 | if (setjmp (png_ptr->jmpbuf)) | |
6301 | { | |
6302 | error: | |
6303 | if (png_ptr) | |
6304 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6305 | xfree (pixels); | |
6306 | xfree (rows); | |
6307 | if (fp) fclose (fp); | |
6308 | UNGCPRO; | |
6309 | return 0; | |
6310 | } | |
6311 | ||
6312 | /* Read image info. */ | |
6313 | if (!NILP (specified_data)) | |
6314 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
6315 | else | |
9a22a004 | 6316 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
6317 | |
6318 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
6319 | fn_png_read_info (png_ptr, info_ptr); | |
6320 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
6321 | &interlace_type, NULL, NULL); | |
6322 | ||
f1f25b99 CY |
6323 | if (!check_image_size (f, width, height)) |
6324 | goto error; | |
6325 | ||
4ef0d4d0 KS |
6326 | /* If image contains simply transparency data, we prefer to |
6327 | construct a clipping mask. */ | |
6328 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
6329 | transparent_p = 1; | |
6330 | else | |
6331 | transparent_p = 0; | |
6332 | ||
6333 | /* This function is easier to write if we only have to handle | |
6334 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
6335 | transform other formats into that format. */ | |
6336 | ||
6337 | /* Strip more than 8 bits per channel. */ | |
6338 | if (bit_depth == 16) | |
6339 | fn_png_set_strip_16 (png_ptr); | |
6340 | ||
6341 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
6342 | if available. */ | |
6343 | fn_png_set_expand (png_ptr); | |
6344 | ||
6345 | /* Convert grayscale images to RGB. */ | |
6346 | if (color_type == PNG_COLOR_TYPE_GRAY | |
6347 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
6348 | fn_png_set_gray_to_rgb (png_ptr); | |
6349 | ||
6350 | screen_gamma = (f->gamma ? 1 / f->gamma / 0.45455 : 2.2); | |
6351 | ||
6352 | #if 0 /* Avoid double gamma correction for PNG images. */ | |
6353 | { /* Tell the PNG lib to handle gamma correction for us. */ | |
6354 | int intent; | |
6355 | double image_gamma; | |
6356 | #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED) | |
6357 | if (png_get_sRGB (png_ptr, info_ptr, &intent)) | |
6358 | /* The libpng documentation says this is right in this case. */ | |
6359 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6360 | else | |
6361 | #endif | |
6362 | if (png_get_gAMA (png_ptr, info_ptr, &image_gamma)) | |
6363 | /* Image contains gamma information. */ | |
6364 | png_set_gamma (png_ptr, screen_gamma, image_gamma); | |
6365 | else | |
6366 | /* Use the standard default for the image gamma. */ | |
6367 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6368 | } | |
6369 | #endif /* if 0 */ | |
6370 | ||
6371 | /* Handle alpha channel by combining the image with a background | |
6372 | color. Do this only if a real alpha channel is supplied. For | |
6373 | simple transparency, we prefer a clipping mask. */ | |
6374 | if (!transparent_p) | |
6375 | { | |
917ac1a9 | 6376 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
6377 | Lisp_Object specified_bg |
6378 | = image_spec_value (img->spec, QCbackground, NULL); | |
6379 | ||
6380 | if (STRINGP (specified_bg)) | |
6381 | /* The user specified `:background', use that. */ | |
6382 | { | |
6383 | /* W32 version incorrectly used COLORREF here!! ++kfs */ | |
6384 | XColor color; | |
6385 | if (x_defined_color (f, SDATA (specified_bg), &color, 0)) | |
6386 | { | |
6387 | png_color_16 user_bg; | |
6388 | ||
6389 | bzero (&user_bg, sizeof user_bg); | |
1f026899 KS |
6390 | user_bg.red = color.red >> 8; |
6391 | user_bg.green = color.green >> 8; | |
6392 | user_bg.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6393 | |
6394 | fn_png_set_background (png_ptr, &user_bg, | |
6395 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6396 | } | |
6397 | } | |
465d8f27 | 6398 | /* The commented-out code checked if the png specifies a default |
8198352b CY |
6399 | background color, and uses that. Since we use the current |
6400 | frame background, it is OK for us to ignore this. | |
465d8f27 | 6401 | |
4ef0d4d0 | 6402 | else if (fn_png_get_bKGD (png_ptr, info_ptr, &image_bg)) |
4ef0d4d0 KS |
6403 | fn_png_set_background (png_ptr, image_bg, |
6404 | PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); | |
465d8f27 | 6405 | */ |
4ef0d4d0 KS |
6406 | else |
6407 | { | |
6408 | /* Image does not contain a background color with which | |
6409 | to combine the image data via an alpha channel. Use | |
6410 | the frame's background instead. */ | |
6411 | #ifdef HAVE_X_WINDOWS | |
6412 | XColor color; | |
6413 | png_color_16 frame_background; | |
6414 | ||
6415 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
6416 | x_query_color (f, &color); | |
6417 | ||
6418 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6419 | frame_background.red = color.red >> 8; |
6420 | frame_background.green = color.green >> 8; | |
6421 | frame_background.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6422 | #endif /* HAVE_X_WINDOWS */ |
6423 | ||
6424 | #ifdef HAVE_NTGUI | |
6425 | COLORREF color; | |
6426 | png_color_16 frame_background; | |
6427 | color = FRAME_BACKGROUND_PIXEL (f); | |
6428 | #if 0 /* W32 TODO : Colormap support. */ | |
6429 | x_query_color (f, &color); | |
6430 | #endif | |
6431 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6432 | frame_background.red = GetRValue (color); |
6433 | frame_background.green = GetGValue (color); | |
6434 | frame_background.blue = GetBValue (color); | |
4ef0d4d0 KS |
6435 | #endif /* HAVE_NTGUI */ |
6436 | ||
6437 | #ifdef MAC_OS | |
6438 | unsigned long color; | |
6439 | png_color_16 frame_background; | |
6440 | color = FRAME_BACKGROUND_PIXEL (f); | |
6441 | #if 0 /* MAC/W32 TODO : Colormap support. */ | |
6442 | x_query_color (f, &color); | |
6443 | #endif | |
6444 | bzero (&frame_background, sizeof frame_background); | |
6445 | frame_background.red = RED_FROM_ULONG (color); | |
6446 | frame_background.green = GREEN_FROM_ULONG (color); | |
6447 | frame_background.blue = BLUE_FROM_ULONG (color); | |
6448 | #endif /* MAC_OS */ | |
6449 | ||
6450 | fn_png_set_background (png_ptr, &frame_background, | |
6451 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6452 | } | |
6453 | } | |
6454 | ||
6455 | /* Update info structure. */ | |
6456 | fn_png_read_update_info (png_ptr, info_ptr); | |
6457 | ||
6458 | /* Get number of channels. Valid values are 1 for grayscale images | |
6459 | and images with a palette, 2 for grayscale images with transparency | |
6460 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
6461 | images with alpha channel, i.e. RGBA. If conversions above were | |
6462 | sufficient we should only have 3 or 4 channels here. */ | |
6463 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
6464 | xassert (channels == 3 || channels == 4); | |
6465 | ||
6466 | /* Number of bytes needed for one row of the image. */ | |
6467 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
6468 | ||
6469 | /* Allocate memory for the image. */ | |
6470 | pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels); | |
6471 | rows = (png_byte **) xmalloc (height * sizeof *rows); | |
6472 | for (i = 0; i < height; ++i) | |
6473 | rows[i] = pixels + i * row_bytes; | |
6474 | ||
6475 | /* Read the entire image. */ | |
6476 | fn_png_read_image (png_ptr, rows); | |
6477 | fn_png_read_end (png_ptr, info_ptr); | |
6478 | if (fp) | |
6479 | { | |
6480 | fclose (fp); | |
6481 | fp = NULL; | |
6482 | } | |
6483 | ||
6484 | /* Create the X image and pixmap. */ | |
6485 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
6486 | &img->pixmap)) | |
6487 | goto error; | |
6488 | ||
6489 | /* Create an image and pixmap serving as mask if the PNG image | |
6490 | contains an alpha channel. */ | |
6491 | if (channels == 4 | |
6492 | && !transparent_p | |
6493 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
6494 | &mask_img, &img->mask)) | |
6495 | { | |
6496 | x_destroy_x_image (ximg); | |
6497 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
6498 | img->pixmap = NO_PIXMAP; | |
6499 | goto error; | |
6500 | } | |
6501 | ||
6502 | /* Fill the X image and mask from PNG data. */ | |
6503 | init_color_table (); | |
6504 | ||
6505 | for (y = 0; y < height; ++y) | |
6506 | { | |
6507 | png_byte *p = rows[y]; | |
6508 | ||
6509 | for (x = 0; x < width; ++x) | |
6510 | { | |
6511 | unsigned r, g, b; | |
6512 | ||
6513 | r = *p++ << 8; | |
6514 | g = *p++ << 8; | |
6515 | b = *p++ << 8; | |
6516 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
6517 | /* An alpha channel, aka mask channel, associates variable | |
6518 | transparency with an image. Where other image formats | |
6519 | support binary transparency---fully transparent or fully | |
6520 | opaque---PNG allows up to 254 levels of partial transparency. | |
6521 | The PNG library implements partial transparency by combining | |
6522 | the image with a specified background color. | |
6523 | ||
6524 | I'm not sure how to handle this here nicely: because the | |
6525 | background on which the image is displayed may change, for | |
6526 | real alpha channel support, it would be necessary to create | |
6527 | a new image for each possible background. | |
6528 | ||
6529 | What I'm doing now is that a mask is created if we have | |
6530 | boolean transparency information. Otherwise I'm using | |
6531 | the frame's background color to combine the image with. */ | |
6532 | ||
6533 | if (channels == 4) | |
6534 | { | |
6535 | if (mask_img) | |
9ecf6403 | 6536 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
6537 | ++p; |
6538 | } | |
6539 | } | |
6540 | } | |
6541 | ||
6542 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
6543 | /* Set IMG's background color from the PNG image, unless the user | |
6544 | overrode it. */ | |
6545 | { | |
6546 | png_color_16 *bg; | |
6547 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
6548 | { | |
6549 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
6550 | img->background_valid = 1; | |
6551 | } | |
6552 | } | |
6553 | ||
6554 | #ifdef COLOR_TABLE_SUPPORT | |
6555 | /* Remember colors allocated for this image. */ | |
6556 | img->colors = colors_in_color_table (&img->ncolors); | |
6557 | free_color_table (); | |
6558 | #endif /* COLOR_TABLE_SUPPORT */ | |
6559 | ||
6560 | /* Clean up. */ | |
6561 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6562 | xfree (rows); | |
6563 | xfree (pixels); | |
6564 | ||
6565 | img->width = width; | |
6566 | img->height = height; | |
6567 | ||
2e09fef1 EZ |
6568 | /* Maybe fill in the background field while we have ximg handy. |
6569 | Casting avoids a GCC warning. */ | |
6570 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6571 | |
6572 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6573 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6574 | x_destroy_x_image (ximg); | |
6575 | ||
6576 | /* Same for the mask. */ | |
6577 | if (mask_img) | |
6578 | { | |
2e09fef1 EZ |
6579 | /* Fill in the background_transparent field while we have the |
6580 | mask handy. Casting avoids a GCC warning. */ | |
6581 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
6582 | |
6583 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
6584 | x_destroy_x_image (mask_img); | |
6585 | } | |
6586 | ||
6587 | UNGCPRO; | |
6588 | return 1; | |
6589 | } | |
6590 | ||
6591 | #else /* HAVE_PNG */ | |
6592 | ||
6593 | #ifdef MAC_OS | |
6594 | static int | |
6595 | png_load (f, img) | |
6596 | struct frame *f; | |
6597 | struct image *img; | |
6598 | { | |
6599 | #ifdef MAC_OSX | |
6600 | if (MyCGImageCreateWithPNGDataProvider) | |
6601 | return image_load_quartz2d (f, img, 1); | |
6602 | else | |
6603 | #endif | |
6604 | return image_load_quicktime (f, img, kQTFileTypePNG); | |
6605 | } | |
6606 | #endif /* MAC_OS */ | |
6607 | ||
6608 | #endif /* !HAVE_PNG */ | |
6609 | ||
6610 | ||
6611 | \f | |
6612 | /*********************************************************************** | |
6613 | JPEG | |
6614 | ***********************************************************************/ | |
6615 | ||
6616 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
6617 | ||
6618 | static int jpeg_image_p P_ ((Lisp_Object object)); | |
6619 | static int jpeg_load P_ ((struct frame *f, struct image *img)); | |
6620 | ||
6621 | /* The symbol `jpeg' identifying images of this type. */ | |
6622 | ||
6623 | Lisp_Object Qjpeg; | |
6624 | ||
6625 | /* Indices of image specification fields in gs_format, below. */ | |
6626 | ||
6627 | enum jpeg_keyword_index | |
6628 | { | |
6629 | JPEG_TYPE, | |
6630 | JPEG_DATA, | |
6631 | JPEG_FILE, | |
6632 | JPEG_ASCENT, | |
6633 | JPEG_MARGIN, | |
6634 | JPEG_RELIEF, | |
6635 | JPEG_ALGORITHM, | |
6636 | JPEG_HEURISTIC_MASK, | |
6637 | JPEG_MASK, | |
6638 | JPEG_BACKGROUND, | |
6639 | JPEG_LAST | |
6640 | }; | |
6641 | ||
6642 | /* Vector of image_keyword structures describing the format | |
6643 | of valid user-defined image specifications. */ | |
6644 | ||
6645 | static struct image_keyword jpeg_format[JPEG_LAST] = | |
6646 | { | |
6647 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6648 | {":data", IMAGE_STRING_VALUE, 0}, | |
6649 | {":file", IMAGE_STRING_VALUE, 0}, | |
6650 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6651 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6652 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6653 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6654 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6655 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6656 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6657 | }; | |
6658 | ||
6659 | /* Structure describing the image type `jpeg'. */ | |
6660 | ||
6661 | static struct image_type jpeg_type = | |
6662 | { | |
6663 | &Qjpeg, | |
6664 | jpeg_image_p, | |
6665 | jpeg_load, | |
6666 | x_clear_image, | |
6667 | NULL | |
6668 | }; | |
6669 | ||
6670 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6671 | ||
6672 | static int | |
6673 | jpeg_image_p (object) | |
6674 | Lisp_Object object; | |
6675 | { | |
6676 | struct image_keyword fmt[JPEG_LAST]; | |
6677 | ||
6678 | bcopy (jpeg_format, fmt, sizeof fmt); | |
6679 | ||
6680 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6681 | return 0; | |
6682 | ||
6683 | /* Must specify either the :data or :file keyword. */ | |
6684 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6685 | } | |
6686 | ||
6687 | #endif /* HAVE_JPEG || MAC_OS */ | |
6688 | ||
6689 | #ifdef HAVE_JPEG | |
6690 | ||
6691 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6692 | jconfig.h. */ | |
6693 | #ifdef HAVE_STDLIB_H | |
6694 | #define HAVE_STDLIB_H_1 | |
6695 | #undef HAVE_STDLIB_H | |
6696 | #endif /* HAVE_STLIB_H */ | |
6697 | ||
66354420 | 6698 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6699 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6700 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6701 | #define __WIN32__ 1 |
6702 | #endif | |
6703 | ||
4ef0d4d0 KS |
6704 | #include <jpeglib.h> |
6705 | #include <jerror.h> | |
6706 | #include <setjmp.h> | |
6707 | ||
6708 | #ifdef HAVE_STLIB_H_1 | |
6709 | #define HAVE_STDLIB_H 1 | |
6710 | #endif | |
6711 | ||
6712 | #ifdef HAVE_NTGUI | |
6713 | ||
6714 | /* JPEG library details. */ | |
6715 | DEF_IMGLIB_FN (jpeg_CreateDecompress); | |
6716 | DEF_IMGLIB_FN (jpeg_start_decompress); | |
6717 | DEF_IMGLIB_FN (jpeg_finish_decompress); | |
6718 | DEF_IMGLIB_FN (jpeg_destroy_decompress); | |
6719 | DEF_IMGLIB_FN (jpeg_read_header); | |
6720 | DEF_IMGLIB_FN (jpeg_read_scanlines); | |
4ef0d4d0 KS |
6721 | DEF_IMGLIB_FN (jpeg_std_error); |
6722 | DEF_IMGLIB_FN (jpeg_resync_to_restart); | |
6723 | ||
6724 | static int | |
0855eb52 | 6725 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6726 | { |
6727 | HMODULE library; | |
6728 | ||
0855eb52 | 6729 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6730 | return 0; |
6731 | ||
6732 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6733 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6734 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6735 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6736 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6737 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6738 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6739 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6740 | return 1; | |
6741 | } | |
6742 | ||
6743 | /* Wrapper since we can't directly assign the function pointer | |
6744 | to another function pointer that was declared more completely easily. */ | |
6745 | static boolean | |
5fc9fdeb | 6746 | jpeg_resync_to_restart_wrapper (cinfo, desired) |
4ef0d4d0 KS |
6747 | j_decompress_ptr cinfo; |
6748 | int desired; | |
6749 | { | |
6750 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6751 | } | |
6752 | ||
6753 | #else | |
6754 | ||
6755 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a) | |
6756 | #define fn_jpeg_start_decompress jpeg_start_decompress | |
6757 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6758 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6759 | #define fn_jpeg_read_header jpeg_read_header | |
6760 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6761 | #define fn_jpeg_std_error jpeg_std_error |
6762 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6763 | ||
6764 | #endif /* HAVE_NTGUI */ | |
6765 | ||
6766 | struct my_jpeg_error_mgr | |
6767 | { | |
6768 | struct jpeg_error_mgr pub; | |
6769 | jmp_buf setjmp_buffer; | |
6770 | }; | |
6771 | ||
6772 | ||
6773 | static void | |
6774 | my_error_exit (cinfo) | |
6775 | j_common_ptr cinfo; | |
6776 | { | |
6777 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6778 | longjmp (mgr->setjmp_buffer, 1); | |
6779 | } | |
6780 | ||
6781 | ||
6782 | /* Init source method for JPEG data source manager. Called by | |
6783 | jpeg_read_header() before any data is actually read. See | |
6784 | libjpeg.doc from the JPEG lib distribution. */ | |
6785 | ||
6786 | static void | |
b25a72ab JB |
6787 | our_common_init_source (cinfo) |
6788 | j_decompress_ptr cinfo; | |
6789 | { | |
6790 | } | |
6791 | ||
6792 | ||
6793 | /* Method to terminate data source. Called by | |
6794 | jpeg_finish_decompress() after all data has been processed. */ | |
6795 | ||
6796 | static void | |
6797 | our_common_term_source (cinfo) | |
4ef0d4d0 KS |
6798 | j_decompress_ptr cinfo; |
6799 | { | |
6800 | } | |
6801 | ||
6802 | ||
6803 | /* Fill input buffer method for JPEG data source manager. Called | |
6804 | whenever more data is needed. We read the whole image in one step, | |
6805 | so this only adds a fake end of input marker at the end. */ | |
6806 | ||
5a1539f3 | 6807 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6808 | |
4ef0d4d0 | 6809 | static boolean |
b25a72ab | 6810 | our_memory_fill_input_buffer (cinfo) |
4ef0d4d0 KS |
6811 | j_decompress_ptr cinfo; |
6812 | { | |
6813 | /* Insert a fake EOI marker. */ | |
6814 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6815 | |
5a1539f3 MB |
6816 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6817 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6818 | |
5a1539f3 | 6819 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6820 | src->bytes_in_buffer = 2; |
e0e30823 | 6821 | return 1; |
4ef0d4d0 KS |
6822 | } |
6823 | ||
6824 | ||
6825 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6826 | is the JPEG data source manager. */ | |
6827 | ||
6828 | static void | |
b25a72ab | 6829 | our_memory_skip_input_data (cinfo, num_bytes) |
4ef0d4d0 KS |
6830 | j_decompress_ptr cinfo; |
6831 | long num_bytes; | |
6832 | { | |
6833 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6834 | ||
6835 | if (src) | |
6836 | { | |
6837 | if (num_bytes > src->bytes_in_buffer) | |
6838 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6839 | ||
6840 | src->bytes_in_buffer -= num_bytes; | |
6841 | src->next_input_byte += num_bytes; | |
6842 | } | |
6843 | } | |
6844 | ||
6845 | ||
4ef0d4d0 KS |
6846 | /* Set up the JPEG lib for reading an image from DATA which contains |
6847 | LEN bytes. CINFO is the decompression info structure created for | |
6848 | reading the image. */ | |
6849 | ||
6850 | static void | |
6851 | jpeg_memory_src (cinfo, data, len) | |
6852 | j_decompress_ptr cinfo; | |
6853 | JOCTET *data; | |
6854 | unsigned int len; | |
6855 | { | |
6856 | struct jpeg_source_mgr *src; | |
6857 | ||
6858 | if (cinfo->src == NULL) | |
6859 | { | |
6860 | /* First time for this JPEG object? */ | |
6861 | cinfo->src = (struct jpeg_source_mgr *) | |
6862 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6863 | sizeof (struct jpeg_source_mgr)); | |
6864 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6865 | src->next_input_byte = data; | |
6866 | } | |
6867 | ||
6868 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6869 | src->init_source = our_common_init_source; |
6870 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6871 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6872 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6873 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6874 | src->bytes_in_buffer = len; |
6875 | src->next_input_byte = data; | |
6876 | } | |
6877 | ||
6878 | ||
b25a72ab JB |
6879 | struct jpeg_stdio_mgr |
6880 | { | |
6881 | struct jpeg_source_mgr mgr; | |
6882 | boolean finished; | |
6883 | FILE *file; | |
6884 | JOCTET *buffer; | |
6885 | }; | |
6886 | ||
6887 | ||
6888 | /* Size of buffer to read JPEG from file. | |
6889 | Not too big, as we want to use alloc_small. */ | |
6890 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6891 | ||
6892 | ||
6893 | /* Fill input buffer method for JPEG data source manager. Called | |
6894 | whenever more data is needed. The data is read from a FILE *. */ | |
6895 | ||
6896 | static boolean | |
6897 | our_stdio_fill_input_buffer (cinfo) | |
6898 | j_decompress_ptr cinfo; | |
6899 | { | |
6900 | struct jpeg_stdio_mgr *src; | |
6901 | ||
6902 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6903 | if (!src->finished) | |
6904 | { | |
6905 | size_t bytes; | |
6906 | ||
6907 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6908 | if (bytes > 0) | |
6909 | src->mgr.bytes_in_buffer = bytes; | |
6910 | else | |
6911 | { | |
6912 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6913 | src->finished = 1; | |
6914 | src->buffer[0] = (JOCTET) 0xFF; | |
6915 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6916 | src->mgr.bytes_in_buffer = 2; | |
6917 | } | |
6918 | src->mgr.next_input_byte = src->buffer; | |
6919 | } | |
6920 | ||
6921 | return 1; | |
6922 | } | |
6923 | ||
6924 | ||
6925 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6926 | is the JPEG data source manager. */ | |
6927 | ||
6928 | static void | |
6929 | our_stdio_skip_input_data (cinfo, num_bytes) | |
6930 | j_decompress_ptr cinfo; | |
6931 | long num_bytes; | |
6932 | { | |
6933 | struct jpeg_stdio_mgr *src; | |
6934 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6935 | ||
6936 | while (num_bytes > 0 && !src->finished) | |
6937 | { | |
6938 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6939 | { | |
6940 | src->mgr.bytes_in_buffer -= num_bytes; | |
6941 | src->mgr.next_input_byte += num_bytes; | |
6942 | break; | |
6943 | } | |
6944 | else | |
6945 | { | |
6946 | num_bytes -= src->mgr.bytes_in_buffer; | |
6947 | src->mgr.bytes_in_buffer = 0; | |
6948 | src->mgr.next_input_byte = NULL; | |
6949 | ||
6950 | our_stdio_fill_input_buffer (cinfo); | |
6951 | } | |
6952 | } | |
6953 | } | |
6954 | ||
6955 | ||
6956 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6957 | CINFO is the decompression info structure created for | |
6958 | reading the image. */ | |
6959 | ||
6960 | static void | |
6961 | jpeg_file_src (cinfo, fp) | |
6962 | j_decompress_ptr cinfo; | |
6963 | FILE *fp; | |
6964 | { | |
6965 | struct jpeg_stdio_mgr *src; | |
6966 | ||
6967 | if (cinfo->src != NULL) | |
6968 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6969 | else | |
6970 | { | |
6971 | /* First time for this JPEG object? */ | |
6972 | cinfo->src = (struct jpeg_source_mgr *) | |
6973 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6974 | sizeof (struct jpeg_stdio_mgr)); | |
6975 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6976 | src->buffer = (JOCTET *) | |
6977 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6978 | JPEG_STDIO_BUFFER_SIZE); | |
6979 | } | |
6980 | ||
6981 | src->file = fp; | |
6982 | src->finished = 0; | |
6983 | src->mgr.init_source = our_common_init_source; | |
6984 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6985 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6986 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6987 | src->mgr.term_source = our_common_term_source; | |
6988 | src->mgr.bytes_in_buffer = 0; | |
6989 | src->mgr.next_input_byte = NULL; | |
6990 | } | |
6991 | ||
6992 | ||
4ef0d4d0 KS |
6993 | /* Load image IMG for use on frame F. Patterned after example.c |
6994 | from the JPEG lib. */ | |
6995 | ||
6996 | static int | |
6997 | jpeg_load (f, img) | |
6998 | struct frame *f; | |
6999 | struct image *img; | |
7000 | { | |
7001 | struct jpeg_decompress_struct cinfo; | |
7002 | struct my_jpeg_error_mgr mgr; | |
7003 | Lisp_Object file, specified_file; | |
7004 | Lisp_Object specified_data; | |
7005 | FILE * volatile fp = NULL; | |
7006 | JSAMPARRAY buffer; | |
7007 | int row_stride, x, y; | |
7008 | XImagePtr ximg = NULL; | |
7009 | int rc; | |
7010 | unsigned long *colors; | |
7011 | int width, height; | |
7012 | struct gcpro gcpro1; | |
7013 | ||
7014 | /* Open the JPEG file. */ | |
7015 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7016 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7017 | file = Qnil; | |
7018 | GCPRO1 (file); | |
7019 | ||
7020 | if (NILP (specified_data)) | |
7021 | { | |
7022 | file = x_find_image_file (specified_file); | |
7023 | if (!STRINGP (file)) | |
7024 | { | |
7025 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7026 | UNGCPRO; | |
7027 | return 0; | |
7028 | } | |
7029 | ||
7030 | fp = fopen (SDATA (file), "rb"); | |
7031 | if (fp == NULL) | |
7032 | { | |
7033 | image_error ("Cannot open `%s'", file, Qnil); | |
7034 | UNGCPRO; | |
7035 | return 0; | |
7036 | } | |
7037 | } | |
7038 | ||
7039 | /* Customize libjpeg's error handling to call my_error_exit when an | |
2e09fef1 EZ |
7040 | error is detected. This function will perform a longjmp. |
7041 | Casting return value avoids a GCC warning on W32. */ | |
7042 | cinfo.err = (struct jpeg_error_mgr *)fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
7043 | mgr.pub.error_exit = my_error_exit; |
7044 | ||
7045 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
7046 | { | |
7047 | if (rc == 1) | |
7048 | { | |
7049 | /* Called from my_error_exit. Display a JPEG error. */ | |
7050 | char buffer[JMSG_LENGTH_MAX]; | |
7051 | cinfo.err->format_message ((j_common_ptr) &cinfo, buffer); | |
7052 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
7053 | build_string (buffer)); | |
7054 | } | |
7055 | ||
7056 | /* Close the input file and destroy the JPEG object. */ | |
7057 | if (fp) | |
7058 | fclose ((FILE *) fp); | |
7059 | fn_jpeg_destroy_decompress (&cinfo); | |
7060 | ||
7061 | /* If we already have an XImage, free that. */ | |
7062 | x_destroy_x_image (ximg); | |
7063 | ||
7064 | /* Free pixmap and colors. */ | |
7065 | x_clear_image (f, img); | |
7066 | ||
7067 | UNGCPRO; | |
7068 | return 0; | |
7069 | } | |
7070 | ||
7071 | /* Create the JPEG decompression object. Let it read from fp. | |
7072 | Read the JPEG image header. */ | |
7073 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
7074 | ||
7075 | if (NILP (specified_data)) | |
b25a72ab | 7076 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
7077 | else |
7078 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
7079 | SBYTES (specified_data)); | |
7080 | ||
e0e30823 | 7081 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
7082 | |
7083 | /* Customize decompression so that color quantization will be used. | |
7084 | Start decompression. */ | |
e0e30823 | 7085 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
7086 | fn_jpeg_start_decompress (&cinfo); |
7087 | width = img->width = cinfo.output_width; | |
7088 | height = img->height = cinfo.output_height; | |
7089 | ||
f1f25b99 CY |
7090 | if (!check_image_size (f, width, height)) |
7091 | { | |
7092 | image_error ("Invalid image size", Qnil, Qnil); | |
7093 | longjmp (mgr.setjmp_buffer, 2); | |
7094 | } | |
7095 | ||
4ef0d4d0 KS |
7096 | /* Create X image and pixmap. */ |
7097 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7098 | longjmp (mgr.setjmp_buffer, 2); | |
7099 | ||
7100 | /* Allocate colors. When color quantization is used, | |
7101 | cinfo.actual_number_of_colors has been set with the number of | |
7102 | colors generated, and cinfo.colormap is a two-dimensional array | |
7103 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
7104 | No more than 255 colors will be generated. */ | |
7105 | { | |
7106 | int i, ir, ig, ib; | |
7107 | ||
7108 | if (cinfo.out_color_components > 2) | |
7109 | ir = 0, ig = 1, ib = 2; | |
7110 | else if (cinfo.out_color_components > 1) | |
7111 | ir = 0, ig = 1, ib = 0; | |
7112 | else | |
7113 | ir = 0, ig = 0, ib = 0; | |
7114 | ||
7115 | /* Use the color table mechanism because it handles colors that | |
7116 | cannot be allocated nicely. Such colors will be replaced with | |
7117 | a default color, and we don't have to care about which colors | |
7118 | can be freed safely, and which can't. */ | |
7119 | init_color_table (); | |
7120 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
7121 | * sizeof *colors); | |
7122 | ||
7123 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
7124 | { | |
7125 | /* Multiply RGB values with 255 because X expects RGB values | |
7126 | in the range 0..0xffff. */ | |
7127 | int r = cinfo.colormap[ir][i] << 8; | |
7128 | int g = cinfo.colormap[ig][i] << 8; | |
7129 | int b = cinfo.colormap[ib][i] << 8; | |
7130 | colors[i] = lookup_rgb_color (f, r, g, b); | |
7131 | } | |
7132 | ||
7133 | #ifdef COLOR_TABLE_SUPPORT | |
7134 | /* Remember those colors actually allocated. */ | |
7135 | img->colors = colors_in_color_table (&img->ncolors); | |
7136 | free_color_table (); | |
7137 | #endif /* COLOR_TABLE_SUPPORT */ | |
7138 | } | |
7139 | ||
7140 | /* Read pixels. */ | |
7141 | row_stride = width * cinfo.output_components; | |
7142 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
7143 | row_stride, 1); | |
7144 | for (y = 0; y < height; ++y) | |
7145 | { | |
7146 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
7147 | for (x = 0; x < cinfo.output_width; ++x) | |
7148 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
7149 | } | |
7150 | ||
7151 | /* Clean up. */ | |
7152 | fn_jpeg_finish_decompress (&cinfo); | |
7153 | fn_jpeg_destroy_decompress (&cinfo); | |
7154 | if (fp) | |
7155 | fclose ((FILE *) fp); | |
7156 | ||
7157 | /* Maybe fill in the background field while we have ximg handy. */ | |
7158 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7159 | /* Casting avoids a GCC warning. */ |
7160 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7161 | |
7162 | /* Put the image into the pixmap. */ | |
7163 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7164 | x_destroy_x_image (ximg); | |
7165 | UNGCPRO; | |
7166 | return 1; | |
7167 | } | |
7168 | ||
7169 | #else /* HAVE_JPEG */ | |
7170 | ||
7171 | #ifdef MAC_OS | |
7172 | static int | |
7173 | jpeg_load (f, img) | |
7174 | struct frame *f; | |
7175 | struct image *img; | |
7176 | { | |
7177 | #ifdef MAC_OSX | |
7178 | return image_load_quartz2d (f, img, 0); | |
7179 | #else | |
7180 | return image_load_quicktime (f, img, kQTFileTypeJPEG); | |
7181 | #endif | |
7182 | } | |
7183 | #endif /* MAC_OS */ | |
7184 | ||
7185 | #endif /* !HAVE_JPEG */ | |
7186 | ||
7187 | ||
7188 | \f | |
7189 | /*********************************************************************** | |
7190 | TIFF | |
7191 | ***********************************************************************/ | |
7192 | ||
7193 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
7194 | ||
7195 | static int tiff_image_p P_ ((Lisp_Object object)); | |
7196 | static int tiff_load P_ ((struct frame *f, struct image *img)); | |
7197 | ||
7198 | /* The symbol `tiff' identifying images of this type. */ | |
7199 | ||
7200 | Lisp_Object Qtiff; | |
7201 | ||
7202 | /* Indices of image specification fields in tiff_format, below. */ | |
7203 | ||
7204 | enum tiff_keyword_index | |
7205 | { | |
7206 | TIFF_TYPE, | |
7207 | TIFF_DATA, | |
7208 | TIFF_FILE, | |
7209 | TIFF_ASCENT, | |
7210 | TIFF_MARGIN, | |
7211 | TIFF_RELIEF, | |
7212 | TIFF_ALGORITHM, | |
7213 | TIFF_HEURISTIC_MASK, | |
7214 | TIFF_MASK, | |
7215 | TIFF_BACKGROUND, | |
7216 | TIFF_LAST | |
7217 | }; | |
7218 | ||
7219 | /* Vector of image_keyword structures describing the format | |
7220 | of valid user-defined image specifications. */ | |
7221 | ||
7222 | static struct image_keyword tiff_format[TIFF_LAST] = | |
7223 | { | |
7224 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7225 | {":data", IMAGE_STRING_VALUE, 0}, | |
7226 | {":file", IMAGE_STRING_VALUE, 0}, | |
7227 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7228 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7229 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7230 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7231 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7232 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7233 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7234 | }; | |
7235 | ||
7236 | /* Structure describing the image type `tiff'. */ | |
7237 | ||
7238 | static struct image_type tiff_type = | |
7239 | { | |
7240 | &Qtiff, | |
7241 | tiff_image_p, | |
7242 | tiff_load, | |
7243 | x_clear_image, | |
7244 | NULL | |
7245 | }; | |
7246 | ||
7247 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
7248 | ||
7249 | static int | |
7250 | tiff_image_p (object) | |
7251 | Lisp_Object object; | |
7252 | { | |
7253 | struct image_keyword fmt[TIFF_LAST]; | |
7254 | bcopy (tiff_format, fmt, sizeof fmt); | |
7255 | ||
7256 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
7257 | return 0; | |
7258 | ||
7259 | /* Must specify either the :data or :file keyword. */ | |
7260 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
7261 | } | |
7262 | ||
7263 | #endif /* HAVE_TIFF || MAC_OS */ | |
7264 | ||
7265 | #ifdef HAVE_TIFF | |
7266 | ||
7267 | #include <tiffio.h> | |
7268 | ||
7269 | #ifdef HAVE_NTGUI | |
7270 | ||
7271 | /* TIFF library details. */ | |
7272 | DEF_IMGLIB_FN (TIFFSetErrorHandler); | |
7273 | DEF_IMGLIB_FN (TIFFSetWarningHandler); | |
7274 | DEF_IMGLIB_FN (TIFFOpen); | |
7275 | DEF_IMGLIB_FN (TIFFClientOpen); | |
7276 | DEF_IMGLIB_FN (TIFFGetField); | |
7277 | DEF_IMGLIB_FN (TIFFReadRGBAImage); | |
7278 | DEF_IMGLIB_FN (TIFFClose); | |
7279 | ||
7280 | static int | |
0855eb52 | 7281 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7282 | { |
7283 | HMODULE library; | |
7284 | ||
0855eb52 | 7285 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
7286 | return 0; |
7287 | ||
7288 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
7289 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
7290 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
7291 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
7292 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
7293 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
7294 | LOAD_IMGLIB_FN (library, TIFFClose); | |
7295 | return 1; | |
7296 | } | |
7297 | ||
7298 | #else | |
7299 | ||
7300 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
7301 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
7302 | #define fn_TIFFOpen TIFFOpen | |
7303 | #define fn_TIFFClientOpen TIFFClientOpen | |
7304 | #define fn_TIFFGetField TIFFGetField | |
7305 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
7306 | #define fn_TIFFClose TIFFClose | |
7307 | ||
7308 | #endif /* HAVE_NTGUI */ | |
7309 | ||
7310 | ||
7311 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
7312 | memory source, but we have to provide a lot of extra functions. | |
7313 | Blah. | |
7314 | ||
7315 | We really only need to implement read and seek, but I am not | |
7316 | convinced that the TIFF library is smart enough not to destroy | |
7317 | itself if we only hand it the function pointers we need to | |
7318 | override. */ | |
7319 | ||
7320 | typedef struct | |
7321 | { | |
7322 | unsigned char *bytes; | |
7323 | size_t len; | |
7324 | int index; | |
7325 | } | |
7326 | tiff_memory_source; | |
7327 | ||
7328 | static size_t | |
7329 | tiff_read_from_memory (data, buf, size) | |
7330 | thandle_t data; | |
7331 | tdata_t buf; | |
7332 | tsize_t size; | |
7333 | { | |
7334 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7335 | ||
7336 | if (size > src->len - src->index) | |
7337 | return (size_t) -1; | |
7338 | bcopy (src->bytes + src->index, buf, size); | |
7339 | src->index += size; | |
7340 | return size; | |
7341 | } | |
7342 | ||
7343 | static size_t | |
7344 | tiff_write_from_memory (data, buf, size) | |
7345 | thandle_t data; | |
7346 | tdata_t buf; | |
7347 | tsize_t size; | |
7348 | { | |
7349 | return (size_t) -1; | |
7350 | } | |
7351 | ||
7352 | static toff_t | |
7353 | tiff_seek_in_memory (data, off, whence) | |
7354 | thandle_t data; | |
7355 | toff_t off; | |
7356 | int whence; | |
7357 | { | |
7358 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7359 | int idx; | |
7360 | ||
7361 | switch (whence) | |
7362 | { | |
7363 | case SEEK_SET: /* Go from beginning of source. */ | |
7364 | idx = off; | |
7365 | break; | |
7366 | ||
7367 | case SEEK_END: /* Go from end of source. */ | |
7368 | idx = src->len + off; | |
7369 | break; | |
7370 | ||
7371 | case SEEK_CUR: /* Go from current position. */ | |
7372 | idx = src->index + off; | |
7373 | break; | |
7374 | ||
7375 | default: /* Invalid `whence'. */ | |
7376 | return -1; | |
7377 | } | |
7378 | ||
7379 | if (idx > src->len || idx < 0) | |
7380 | return -1; | |
7381 | ||
7382 | src->index = idx; | |
7383 | return src->index; | |
7384 | } | |
7385 | ||
7386 | static int | |
7387 | tiff_close_memory (data) | |
7388 | thandle_t data; | |
7389 | { | |
7390 | /* NOOP */ | |
7391 | return 0; | |
7392 | } | |
7393 | ||
7394 | static int | |
7395 | tiff_mmap_memory (data, pbase, psize) | |
7396 | thandle_t data; | |
7397 | tdata_t *pbase; | |
7398 | toff_t *psize; | |
7399 | { | |
7400 | /* It is already _IN_ memory. */ | |
7401 | return 0; | |
7402 | } | |
7403 | ||
7404 | static void | |
7405 | tiff_unmap_memory (data, base, size) | |
7406 | thandle_t data; | |
7407 | tdata_t base; | |
7408 | toff_t size; | |
7409 | { | |
7410 | /* We don't need to do this. */ | |
7411 | } | |
7412 | ||
7413 | static toff_t | |
7414 | tiff_size_of_memory (data) | |
7415 | thandle_t data; | |
7416 | { | |
7417 | return ((tiff_memory_source *) data)->len; | |
7418 | } | |
7419 | ||
7420 | ||
7421 | static void | |
7422 | tiff_error_handler (title, format, ap) | |
7423 | const char *title, *format; | |
7424 | va_list ap; | |
7425 | { | |
7426 | char buf[512]; | |
7427 | int len; | |
7428 | ||
7429 | len = sprintf (buf, "TIFF error: %s ", title); | |
7430 | vsprintf (buf + len, format, ap); | |
7431 | add_to_log (buf, Qnil, Qnil); | |
7432 | } | |
7433 | ||
7434 | ||
7435 | static void | |
7436 | tiff_warning_handler (title, format, ap) | |
7437 | const char *title, *format; | |
7438 | va_list ap; | |
7439 | { | |
7440 | char buf[512]; | |
7441 | int len; | |
7442 | ||
7443 | len = sprintf (buf, "TIFF warning: %s ", title); | |
7444 | vsprintf (buf + len, format, ap); | |
7445 | add_to_log (buf, Qnil, Qnil); | |
7446 | } | |
7447 | ||
7448 | ||
7449 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
7450 | successful. */ | |
7451 | ||
7452 | static int | |
7453 | tiff_load (f, img) | |
7454 | struct frame *f; | |
7455 | struct image *img; | |
7456 | { | |
7457 | Lisp_Object file, specified_file; | |
7458 | Lisp_Object specified_data; | |
7459 | TIFF *tiff; | |
7460 | int width, height, x, y; | |
7461 | uint32 *buf; | |
7462 | int rc; | |
7463 | XImagePtr ximg; | |
7464 | struct gcpro gcpro1; | |
7465 | tiff_memory_source memsrc; | |
7466 | ||
7467 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7468 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7469 | file = Qnil; | |
7470 | GCPRO1 (file); | |
7471 | ||
7472 | fn_TIFFSetErrorHandler (tiff_error_handler); | |
7473 | fn_TIFFSetWarningHandler (tiff_warning_handler); | |
7474 | ||
7475 | if (NILP (specified_data)) | |
7476 | { | |
7477 | /* Read from a file */ | |
7478 | file = x_find_image_file (specified_file); | |
7479 | if (!STRINGP (file)) | |
7480 | { | |
7481 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7482 | UNGCPRO; | |
7483 | return 0; | |
7484 | } | |
7485 | ||
2e09fef1 EZ |
7486 | /* Try to open the image file. Casting return value avoids a |
7487 | GCC warning on W32. */ | |
7488 | tiff = (TIFF *)fn_TIFFOpen (SDATA (file), "r"); | |
4ef0d4d0 KS |
7489 | if (tiff == NULL) |
7490 | { | |
7491 | image_error ("Cannot open `%s'", file, Qnil); | |
7492 | UNGCPRO; | |
7493 | return 0; | |
7494 | } | |
7495 | } | |
7496 | else | |
7497 | { | |
7498 | /* Memory source! */ | |
7499 | memsrc.bytes = SDATA (specified_data); | |
7500 | memsrc.len = SBYTES (specified_data); | |
7501 | memsrc.index = 0; | |
7502 | ||
2e09fef1 EZ |
7503 | /* Casting return value avoids a GCC warning on W32. */ |
7504 | tiff = (TIFF *)fn_TIFFClientOpen ("memory_source", "r", &memsrc, | |
7505 | (TIFFReadWriteProc) tiff_read_from_memory, | |
7506 | (TIFFReadWriteProc) tiff_write_from_memory, | |
7507 | tiff_seek_in_memory, | |
7508 | tiff_close_memory, | |
7509 | tiff_size_of_memory, | |
7510 | tiff_mmap_memory, | |
7511 | tiff_unmap_memory); | |
4ef0d4d0 KS |
7512 | |
7513 | if (!tiff) | |
7514 | { | |
7515 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
7516 | UNGCPRO; | |
7517 | return 0; | |
7518 | } | |
7519 | } | |
7520 | ||
7521 | /* Get width and height of the image, and allocate a raster buffer | |
7522 | of width x height 32-bit values. */ | |
7523 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
7524 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
7525 | |
7526 | if (!check_image_size (f, width, height)) | |
7527 | { | |
7528 | image_error ("Invalid image size", Qnil, Qnil); | |
7529 | UNGCPRO; | |
7530 | return 0; | |
7531 | } | |
7532 | ||
4ef0d4d0 KS |
7533 | buf = (uint32 *) xmalloc (width * height * sizeof *buf); |
7534 | ||
7535 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
7536 | fn_TIFFClose (tiff); | |
7537 | if (!rc) | |
7538 | { | |
7539 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
7540 | xfree (buf); | |
7541 | UNGCPRO; | |
7542 | return 0; | |
7543 | } | |
7544 | ||
7545 | /* Create the X image and pixmap. */ | |
7546 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7547 | { | |
7548 | xfree (buf); | |
7549 | UNGCPRO; | |
7550 | return 0; | |
7551 | } | |
7552 | ||
7553 | /* Initialize the color table. */ | |
7554 | init_color_table (); | |
7555 | ||
7556 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
7557 | for (y = 0; y < height; ++y) | |
7558 | { | |
7559 | uint32 *row = buf + y * width; | |
7560 | ||
7561 | for (x = 0; x < width; ++x) | |
7562 | { | |
7563 | uint32 abgr = row[x]; | |
7564 | int r = TIFFGetR (abgr) << 8; | |
7565 | int g = TIFFGetG (abgr) << 8; | |
7566 | int b = TIFFGetB (abgr) << 8; | |
7567 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
7568 | } | |
7569 | } | |
7570 | ||
7571 | #ifdef COLOR_TABLE_SUPPORT | |
7572 | /* Remember the colors allocated for the image. Free the color table. */ | |
7573 | img->colors = colors_in_color_table (&img->ncolors); | |
7574 | free_color_table (); | |
7575 | #endif /* COLOR_TABLE_SUPPORT */ | |
7576 | ||
7577 | img->width = width; | |
7578 | img->height = height; | |
7579 | ||
7580 | /* Maybe fill in the background field while we have ximg handy. */ | |
7581 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7582 | /* Casting avoids a GCC warning on W32. */ |
7583 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7584 | |
7585 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7586 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7587 | x_destroy_x_image (ximg); | |
7588 | xfree (buf); | |
7589 | ||
7590 | UNGCPRO; | |
7591 | return 1; | |
7592 | } | |
7593 | ||
7594 | #else /* HAVE_TIFF */ | |
7595 | ||
7596 | #ifdef MAC_OS | |
7597 | static int | |
7598 | tiff_load (f, img) | |
7599 | struct frame *f; | |
7600 | struct image *img; | |
7601 | { | |
7602 | return image_load_quicktime (f, img, kQTFileTypeTIFF); | |
7603 | } | |
7604 | #endif /* MAC_OS */ | |
7605 | ||
7606 | #endif /* !HAVE_TIFF */ | |
7607 | ||
7608 | ||
7609 | \f | |
7610 | /*********************************************************************** | |
7611 | GIF | |
7612 | ***********************************************************************/ | |
7613 | ||
7614 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
7615 | ||
7616 | static int gif_image_p P_ ((Lisp_Object object)); | |
7617 | static int gif_load P_ ((struct frame *f, struct image *img)); | |
6ac3c7bb | 7618 | static void gif_clear_image P_ ((struct frame *f, struct image *img)); |
4ef0d4d0 KS |
7619 | |
7620 | /* The symbol `gif' identifying images of this type. */ | |
7621 | ||
7622 | Lisp_Object Qgif; | |
7623 | ||
7624 | /* Indices of image specification fields in gif_format, below. */ | |
7625 | ||
7626 | enum gif_keyword_index | |
7627 | { | |
7628 | GIF_TYPE, | |
7629 | GIF_DATA, | |
7630 | GIF_FILE, | |
7631 | GIF_ASCENT, | |
7632 | GIF_MARGIN, | |
7633 | GIF_RELIEF, | |
7634 | GIF_ALGORITHM, | |
7635 | GIF_HEURISTIC_MASK, | |
7636 | GIF_MASK, | |
7637 | GIF_IMAGE, | |
7638 | GIF_BACKGROUND, | |
7639 | GIF_LAST | |
7640 | }; | |
7641 | ||
7642 | /* Vector of image_keyword structures describing the format | |
7643 | of valid user-defined image specifications. */ | |
7644 | ||
7645 | static struct image_keyword gif_format[GIF_LAST] = | |
7646 | { | |
7647 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7648 | {":data", IMAGE_STRING_VALUE, 0}, | |
7649 | {":file", IMAGE_STRING_VALUE, 0}, | |
7650 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7651 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7652 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7653 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7654 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7655 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7656 | {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, | |
7657 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7658 | }; | |
7659 | ||
7660 | /* Structure describing the image type `gif'. */ | |
7661 | ||
7662 | static struct image_type gif_type = | |
7663 | { | |
7664 | &Qgif, | |
7665 | gif_image_p, | |
7666 | gif_load, | |
6ac3c7bb | 7667 | gif_clear_image, |
4ef0d4d0 KS |
7668 | NULL |
7669 | }; | |
7670 | ||
6ac3c7bb KS |
7671 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7672 | ||
7673 | static void | |
7674 | gif_clear_image (f, img) | |
7675 | struct frame *f; | |
7676 | struct image *img; | |
7677 | { | |
7678 | /* IMG->data.ptr_val may contain extension data. */ | |
7679 | img->data.lisp_val = Qnil; | |
7680 | x_clear_image (f, img); | |
7681 | } | |
7682 | ||
4ef0d4d0 KS |
7683 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
7684 | ||
7685 | static int | |
7686 | gif_image_p (object) | |
7687 | Lisp_Object object; | |
7688 | { | |
7689 | struct image_keyword fmt[GIF_LAST]; | |
7690 | bcopy (gif_format, fmt, sizeof fmt); | |
7691 | ||
7692 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7693 | return 0; | |
7694 | ||
7695 | /* Must specify either the :data or :file keyword. */ | |
7696 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7697 | } | |
7698 | ||
7699 | #endif /* HAVE_GIF || MAC_OS */ | |
7700 | ||
7701 | #ifdef HAVE_GIF | |
7702 | ||
7703 | #if defined (HAVE_NTGUI) || defined (MAC_OS) | |
2e09fef1 EZ |
7704 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7705 | Undefine before redefining to avoid a preprocessor warning. */ | |
7706 | #ifdef DrawText | |
7707 | #undef DrawText | |
7708 | #endif | |
4ef0d4d0 KS |
7709 | /* avoid conflict with QuickdrawText.h */ |
7710 | #define DrawText gif_DrawText | |
7711 | #include <gif_lib.h> | |
7712 | #undef DrawText | |
7713 | ||
7714 | #else /* HAVE_NTGUI || MAC_OS */ | |
7715 | ||
7716 | #include <gif_lib.h> | |
7717 | ||
7718 | #endif /* HAVE_NTGUI || MAC_OS */ | |
7719 | ||
7720 | ||
7721 | #ifdef HAVE_NTGUI | |
7722 | ||
7723 | /* GIF library details. */ | |
7724 | DEF_IMGLIB_FN (DGifCloseFile); | |
7725 | DEF_IMGLIB_FN (DGifSlurp); | |
7726 | DEF_IMGLIB_FN (DGifOpen); | |
7727 | DEF_IMGLIB_FN (DGifOpenFileName); | |
7728 | ||
7729 | static int | |
0855eb52 | 7730 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7731 | { |
7732 | HMODULE library; | |
7733 | ||
0855eb52 | 7734 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7735 | return 0; |
7736 | ||
7737 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7738 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7739 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7740 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7741 | return 1; | |
7742 | } | |
7743 | ||
7744 | #else | |
7745 | ||
7746 | #define fn_DGifCloseFile DGifCloseFile | |
7747 | #define fn_DGifSlurp DGifSlurp | |
7748 | #define fn_DGifOpen DGifOpen | |
7749 | #define fn_DGifOpenFileName DGifOpenFileName | |
7750 | ||
7751 | #endif /* HAVE_NTGUI */ | |
7752 | ||
7753 | /* Reading a GIF image from memory | |
7754 | Based on the PNG memory stuff to a certain extent. */ | |
7755 | ||
7756 | typedef struct | |
7757 | { | |
7758 | unsigned char *bytes; | |
7759 | size_t len; | |
7760 | int index; | |
7761 | } | |
7762 | gif_memory_source; | |
7763 | ||
7764 | /* Make the current memory source available to gif_read_from_memory. | |
7765 | It's done this way because not all versions of libungif support | |
7766 | a UserData field in the GifFileType structure. */ | |
7767 | static gif_memory_source *current_gif_memory_src; | |
7768 | ||
7769 | static int | |
7770 | gif_read_from_memory (file, buf, len) | |
7771 | GifFileType *file; | |
7772 | GifByteType *buf; | |
7773 | int len; | |
7774 | { | |
7775 | gif_memory_source *src = current_gif_memory_src; | |
7776 | ||
7777 | if (len > src->len - src->index) | |
7778 | return -1; | |
7779 | ||
7780 | bcopy (src->bytes + src->index, buf, len); | |
7781 | src->index += len; | |
7782 | return len; | |
7783 | } | |
7784 | ||
7785 | ||
7786 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7787 | successful. */ | |
7788 | ||
aca946f3 GM |
7789 | static int interlace_start[] = {0, 4, 2, 1}; |
7790 | static int interlace_increment[] = {8, 8, 4, 2}; | |
7791 | ||
4ef0d4d0 KS |
7792 | static int |
7793 | gif_load (f, img) | |
7794 | struct frame *f; | |
7795 | struct image *img; | |
7796 | { | |
7797 | Lisp_Object file, specified_file; | |
7798 | Lisp_Object specified_data; | |
7799 | int rc, width, height, x, y, i; | |
7800 | XImagePtr ximg; | |
7801 | ColorMapObject *gif_color_map; | |
7802 | unsigned long pixel_colors[256]; | |
7803 | GifFileType *gif; | |
7804 | struct gcpro gcpro1; | |
7805 | Lisp_Object image; | |
6ac3c7bb | 7806 | int ino, image_height, image_width; |
4ef0d4d0 KS |
7807 | gif_memory_source memsrc; |
7808 | unsigned char *raster; | |
7809 | ||
7810 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7811 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7812 | file = Qnil; | |
7813 | GCPRO1 (file); | |
7814 | ||
7815 | if (NILP (specified_data)) | |
7816 | { | |
7817 | file = x_find_image_file (specified_file); | |
7818 | if (!STRINGP (file)) | |
7819 | { | |
7820 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7821 | UNGCPRO; | |
7822 | return 0; | |
7823 | } | |
7824 | ||
2e09fef1 EZ |
7825 | /* Open the GIF file. Casting return value avoids a GCC warning |
7826 | on W32. */ | |
7827 | gif = (GifFileType *)fn_DGifOpenFileName (SDATA (file)); | |
4ef0d4d0 KS |
7828 | if (gif == NULL) |
7829 | { | |
7830 | image_error ("Cannot open `%s'", file, Qnil); | |
7831 | UNGCPRO; | |
7832 | return 0; | |
7833 | } | |
7834 | } | |
7835 | else | |
7836 | { | |
7837 | /* Read from memory! */ | |
7838 | current_gif_memory_src = &memsrc; | |
7839 | memsrc.bytes = SDATA (specified_data); | |
7840 | memsrc.len = SBYTES (specified_data); | |
7841 | memsrc.index = 0; | |
7842 | ||
2e09fef1 | 7843 | /* Casting return value avoids a GCC warning on W32. */ |
5fc9fdeb | 7844 | gif = (GifFileType *) fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7845 | if (!gif) |
7846 | { | |
7847 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
7848 | UNGCPRO; | |
7849 | return 0; | |
7850 | } | |
7851 | } | |
7852 | ||
f1f25b99 CY |
7853 | /* Before reading entire contents, check the declared image size. */ |
7854 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7855 | { | |
7856 | image_error ("Invalid image size", Qnil, Qnil); | |
7857 | fn_DGifCloseFile (gif); | |
7858 | UNGCPRO; | |
7859 | return 0; | |
7860 | } | |
7861 | ||
4ef0d4d0 KS |
7862 | /* Read entire contents. */ |
7863 | rc = fn_DGifSlurp (gif); | |
7864 | if (rc == GIF_ERROR) | |
7865 | { | |
7866 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7867 | fn_DGifCloseFile (gif); | |
7868 | UNGCPRO; | |
7869 | return 0; | |
7870 | } | |
7871 | ||
7872 | image = image_spec_value (img->spec, QCindex, NULL); | |
7873 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7874 | if (ino >= gif->ImageCount) | |
7875 | { | |
7876 | image_error ("Invalid image number `%s' in image `%s'", | |
7877 | image, img->spec); | |
7878 | fn_DGifCloseFile (gif); | |
7879 | UNGCPRO; | |
7880 | return 0; | |
7881 | } | |
7882 | ||
6ac3c7bb KS |
7883 | img->corners[TOP_CORNER] = gif->SavedImages[ino].ImageDesc.Top; |
7884 | img->corners[LEFT_CORNER] = gif->SavedImages[ino].ImageDesc.Left; | |
0f4aca46 | 7885 | image_height = gif->SavedImages[ino].ImageDesc.Height; |
6ac3c7bb KS |
7886 | img->corners[BOT_CORNER] = img->corners[TOP_CORNER] + image_height; |
7887 | image_width = gif->SavedImages[ino].ImageDesc.Width; | |
7888 | img->corners[RIGHT_CORNER] = img->corners[LEFT_CORNER] + image_width; | |
0f4aca46 KS |
7889 | |
7890 | width = img->width = max (gif->SWidth, | |
7891 | max (gif->Image.Left + gif->Image.Width, | |
6ac3c7bb | 7892 | img->corners[RIGHT_CORNER])); |
0f4aca46 KS |
7893 | height = img->height = max (gif->SHeight, |
7894 | max (gif->Image.Top + gif->Image.Height, | |
6ac3c7bb | 7895 | img->corners[BOT_CORNER])); |
4ef0d4d0 | 7896 | |
f1f25b99 CY |
7897 | if (!check_image_size (f, width, height)) |
7898 | { | |
7899 | image_error ("Invalid image size", Qnil, Qnil); | |
7900 | fn_DGifCloseFile (gif); | |
7901 | UNGCPRO; | |
7902 | return 0; | |
7903 | } | |
7904 | ||
4ef0d4d0 KS |
7905 | /* Create the X image and pixmap. */ |
7906 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7907 | { | |
7908 | fn_DGifCloseFile (gif); | |
7909 | UNGCPRO; | |
7910 | return 0; | |
7911 | } | |
7912 | ||
7913 | /* Allocate colors. */ | |
7914 | gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap; | |
7915 | if (!gif_color_map) | |
7916 | gif_color_map = gif->SColorMap; | |
7917 | init_color_table (); | |
7918 | bzero (pixel_colors, sizeof pixel_colors); | |
7919 | ||
1ab2cd43 TTN |
7920 | if (gif_color_map) |
7921 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
7922 | { | |
7923 | int r = gif_color_map->Colors[i].Red << 8; | |
7924 | int g = gif_color_map->Colors[i].Green << 8; | |
7925 | int b = gif_color_map->Colors[i].Blue << 8; | |
7926 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7927 | } | |
4ef0d4d0 KS |
7928 | |
7929 | #ifdef COLOR_TABLE_SUPPORT | |
7930 | img->colors = colors_in_color_table (&img->ncolors); | |
7931 | free_color_table (); | |
7932 | #endif /* COLOR_TABLE_SUPPORT */ | |
7933 | ||
7934 | /* Clear the part of the screen image that are not covered by | |
7935 | the image from the GIF file. Full animated GIF support | |
7936 | requires more than can be done here (see the gif89 spec, | |
7937 | disposal methods). Let's simply assume that the part | |
7938 | not covered by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7939 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7940 | for (x = 0; x < width; ++x) |
7941 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7942 | ||
6ac3c7bb | 7943 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7944 | for (x = 0; x < width; ++x) |
7945 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7946 | ||
6ac3c7bb | 7947 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7948 | { |
6ac3c7bb | 7949 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7950 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7951 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7952 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7953 | } | |
7954 | ||
7955 | /* Read the GIF image into the X image. We use a local variable | |
7956 | `raster' here because RasterBits below is a char *, and invites | |
7957 | problems with bytes >= 0x80. */ | |
7958 | raster = (unsigned char *) gif->SavedImages[ino].RasterBits; | |
7959 | ||
7960 | if (gif->SavedImages[ino].ImageDesc.Interlace) | |
7961 | { | |
4ef0d4d0 KS |
7962 | int pass; |
7963 | int row = interlace_start[0]; | |
7964 | ||
7965 | pass = 0; | |
7966 | ||
7967 | for (y = 0; y < image_height; y++) | |
7968 | { | |
7969 | if (row >= image_height) | |
7970 | { | |
7971 | row = interlace_start[++pass]; | |
7972 | while (row >= image_height) | |
7973 | row = interlace_start[++pass]; | |
7974 | } | |
7975 | ||
7976 | for (x = 0; x < image_width; x++) | |
7977 | { | |
7978 | int i = raster[(y * image_width) + x]; | |
6ac3c7bb KS |
7979 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7980 | row + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7981 | } |
7982 | ||
7983 | row += interlace_increment[pass]; | |
7984 | } | |
7985 | } | |
7986 | else | |
7987 | { | |
7988 | for (y = 0; y < image_height; ++y) | |
7989 | for (x = 0; x < image_width; ++x) | |
7990 | { | |
7991 | int i = raster[y * image_width + x]; | |
6ac3c7bb KS |
7992 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7993 | y + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7994 | } |
7995 | } | |
7996 | ||
6ac3c7bb KS |
7997 | /* Save GIF image extension data for `image-extension-data'. |
7998 | Format is (count IMAGES FUNCTION "BYTES" ...). */ | |
7999 | img->data.lisp_val = Qnil; | |
8000 | if (gif->SavedImages[ino].ExtensionBlockCount > 0) | |
8001 | { | |
8002 | ExtensionBlock *ext = gif->SavedImages[ino].ExtensionBlocks; | |
8003 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++, ext++) | |
8004 | /* Append (... FUNCTION "BYTES") */ | |
8005 | img->data.lisp_val = Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
8006 | Fcons (make_number (ext->Function), | |
8007 | img->data.lisp_val)); | |
8008 | img->data.lisp_val = Fnreverse (img->data.lisp_val); | |
8009 | } | |
8010 | if (gif->ImageCount > 1) | |
8011 | img->data.lisp_val = Fcons (Qcount, | |
8012 | Fcons (make_number (gif->ImageCount), | |
8013 | img->data.lisp_val)); | |
8014 | ||
4ef0d4d0 KS |
8015 | fn_DGifCloseFile (gif); |
8016 | ||
8017 | /* Maybe fill in the background field while we have ximg handy. */ | |
8018 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
8019 | /* Casting avoids a GCC warning. */ |
8020 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
8021 | |
8022 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
8023 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8024 | x_destroy_x_image (ximg); | |
8025 | ||
8026 | UNGCPRO; | |
8027 | return 1; | |
8028 | } | |
8029 | ||
2e09fef1 | 8030 | #else /* !HAVE_GIF */ |
4ef0d4d0 KS |
8031 | |
8032 | #ifdef MAC_OS | |
8033 | static int | |
8034 | gif_load (f, img) | |
8035 | struct frame *f; | |
8036 | struct image *img; | |
8037 | { | |
8038 | Lisp_Object specified_file, file; | |
8039 | Lisp_Object specified_data; | |
8040 | OSErr err; | |
8041 | Boolean graphic_p, movie_p, prefer_graphic_p; | |
8042 | Handle dh = NULL; | |
8043 | Movie movie = NULL; | |
8044 | Lisp_Object image; | |
8045 | Track track = NULL; | |
8046 | Media media = NULL; | |
8047 | long nsamples; | |
8048 | Rect rect; | |
8049 | Lisp_Object specified_bg; | |
8050 | XColor color; | |
8051 | RGBColor bg_color; | |
8052 | int width, height; | |
8053 | XImagePtr ximg; | |
fb8b2fc3 YM |
8054 | TimeScale time_scale; |
8055 | TimeValue time, duration; | |
4ef0d4d0 | 8056 | int ino; |
2a316a84 ST |
8057 | CGrafPtr old_port; |
8058 | GDHandle old_gdh; | |
4ef0d4d0 KS |
8059 | |
8060 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
8061 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
8062 | ||
dac5344b YM |
8063 | /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */ |
8064 | EnterMovies (); | |
8065 | ||
4ef0d4d0 KS |
8066 | if (NILP (specified_data)) |
8067 | { | |
8068 | /* Read from a file */ | |
8069 | FSSpec fss; | |
8070 | short refnum; | |
8071 | ||
8072 | err = find_image_fsspec (specified_file, &file, &fss); | |
8073 | if (err != noErr) | |
8074 | { | |
8075 | if (err == fnfErr) | |
8076 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
8077 | else | |
8078 | goto open_error; | |
8079 | } | |
8080 | ||
8081 | err = CanQuickTimeOpenFile (&fss, kQTFileTypeGIF, 0, | |
8082 | &graphic_p, &movie_p, &prefer_graphic_p, 0); | |
8083 | if (err != noErr) | |
8084 | goto open_error; | |
8085 | ||
8086 | if (!graphic_p && !movie_p) | |
8087 | goto open_error; | |
8088 | if (prefer_graphic_p) | |
8089 | return image_load_qt_1 (f, img, kQTFileTypeGIF, &fss, NULL); | |
8090 | err = OpenMovieFile (&fss, &refnum, fsRdPerm); | |
8091 | if (err != noErr) | |
8092 | goto open_error; | |
8093 | err = NewMovieFromFile (&movie, refnum, NULL, NULL, 0, NULL); | |
8094 | CloseMovieFile (refnum); | |
8095 | if (err != noErr) | |
8096 | { | |
8097 | image_error ("Error reading `%s'", file, Qnil); | |
8098 | return 0; | |
8099 | } | |
8100 | } | |
8101 | else | |
8102 | { | |
8103 | /* Memory source! */ | |
8104 | Handle dref = NULL; | |
8105 | long file_type_atom[3]; | |
8106 | ||
8107 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
8108 | if (err != noErr) | |
8109 | { | |
8110 | image_error ("Cannot allocate data handle for `%s'", | |
8111 | img->spec, Qnil); | |
8112 | goto error; | |
8113 | } | |
8114 | ||
8115 | file_type_atom[0] = EndianU32_NtoB (sizeof (long) * 3); | |
8116 | file_type_atom[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType); | |
8117 | file_type_atom[2] = EndianU32_NtoB (kQTFileTypeGIF); | |
8118 | err = PtrToHand (&dh, &dref, sizeof (Handle)); | |
8119 | if (err == noErr) | |
8120 | /* no file name */ | |
8121 | err = PtrAndHand ("\p", dref, 1); | |
8122 | if (err == noErr) | |
8123 | err = PtrAndHand (file_type_atom, dref, sizeof (long) * 3); | |
8124 | if (err != noErr) | |
8125 | { | |
8126 | image_error ("Cannot allocate handle data ref for `%s'", img->spec, Qnil); | |
8127 | goto error; | |
8128 | } | |
8129 | err = CanQuickTimeOpenDataRef (dref, HandleDataHandlerSubType, &graphic_p, | |
8130 | &movie_p, &prefer_graphic_p, 0); | |
8131 | if (err != noErr) | |
8132 | goto open_error; | |
8133 | ||
8134 | if (!graphic_p && !movie_p) | |
8135 | goto open_error; | |
8136 | if (prefer_graphic_p) | |
8137 | { | |
8138 | int success_p; | |
8139 | ||
8140 | DisposeHandle (dref); | |
8141 | success_p = image_load_qt_1 (f, img, kQTFileTypeGIF, NULL, dh); | |
8142 | DisposeHandle (dh); | |
8143 | return success_p; | |
8144 | } | |
8145 | err = NewMovieFromDataRef (&movie, 0, NULL, dref, | |
8146 | HandleDataHandlerSubType); | |
8147 | DisposeHandle (dref); | |
8148 | if (err != noErr) | |
8149 | goto open_error; | |
8150 | } | |
8151 | ||
8152 | image = image_spec_value (img->spec, QCindex, NULL); | |
8153 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
8154 | track = GetMovieIndTrack (movie, 1); | |
8155 | media = GetTrackMedia (track); | |
8156 | nsamples = GetMediaSampleCount (media); | |
8157 | if (ino >= nsamples) | |
8158 | { | |
8159 | image_error ("Invalid image number `%s' in image `%s'", | |
8160 | image, img->spec); | |
8161 | goto error; | |
8162 | } | |
fb8b2fc3 | 8163 | time_scale = GetMediaTimeScale (media); |
4ef0d4d0 KS |
8164 | |
8165 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8166 | if (!STRINGP (specified_bg) || | |
8167 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
8168 | { | |
8169 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
8170 | color.red = RED16_FROM_ULONG (color.pixel); | |
8171 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
8172 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
8173 | } | |
8174 | GetMovieBox (movie, &rect); | |
8175 | width = img->width = rect.right - rect.left; | |
8176 | height = img->height = rect.bottom - rect.top; | |
8177 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
8178 | goto error; | |
8179 | ||
2a316a84 | 8180 | GetGWorld (&old_port, &old_gdh); |
4ef0d4d0 KS |
8181 | SetGWorld (ximg, NULL); |
8182 | bg_color.red = color.red; | |
8183 | bg_color.green = color.green; | |
8184 | bg_color.blue = color.blue; | |
8185 | RGBBackColor (&bg_color); | |
2a316a84 | 8186 | SetGWorld (old_port, old_gdh); |
e0e30823 | 8187 | SetMovieActive (movie, 1); |
4ef0d4d0 | 8188 | SetMovieGWorld (movie, ximg, NULL); |
fb8b2fc3 | 8189 | SampleNumToMediaTime (media, ino + 1, &time, &duration); |
4ef0d4d0 KS |
8190 | SetMovieTimeValue (movie, time); |
8191 | MoviesTask (movie, 0L); | |
8192 | DisposeTrackMedia (media); | |
8193 | DisposeMovieTrack (track); | |
8194 | DisposeMovie (movie); | |
8195 | if (dh) | |
8196 | DisposeHandle (dh); | |
fb8b2fc3 YM |
8197 | |
8198 | /* Save GIF image extension data for `image-extension-data'. | |
8c88cb18 YM |
8199 | Format is (count IMAGES 0xf9 GRAPHIC_CONTROL_EXTENSION_BLOCK). */ |
8200 | { | |
a73c40d1 | 8201 | Lisp_Object gce = make_uninit_string (4); |
8c88cb18 YM |
8202 | int centisec = ((float)duration / time_scale) * 100.0f + 0.5f; |
8203 | ||
8204 | /* Fill the delay time field. */ | |
a73c40d1 YM |
8205 | SSET (gce, 1, centisec & 0xff); |
8206 | SSET (gce, 2, (centisec >> 8) & 0xff); | |
8c88cb18 | 8207 | /* We don't know about other fields. */ |
a73c40d1 YM |
8208 | SSET (gce, 0, 0); |
8209 | SSET (gce, 3, 0); | |
8c88cb18 YM |
8210 | |
8211 | img->data.lisp_val = list4 (Qcount, make_number (nsamples), | |
a73c40d1 | 8212 | make_number (0xf9), gce); |
8c88cb18 | 8213 | } |
fb8b2fc3 | 8214 | |
4ef0d4d0 KS |
8215 | /* Maybe fill in the background field while we have ximg handy. */ |
8216 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
8217 | IMAGE_BACKGROUND (img, f, ximg); | |
8218 | ||
8219 | /* Put the image into the pixmap. */ | |
8220 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8221 | x_destroy_x_image (ximg); | |
8222 | return 1; | |
8223 | ||
8224 | open_error: | |
8225 | image_error ("Cannot open `%s'", file, Qnil); | |
8226 | error: | |
8227 | if (media) | |
8228 | DisposeTrackMedia (media); | |
8229 | if (track) | |
8230 | DisposeMovieTrack (track); | |
8231 | if (movie) | |
8232 | DisposeMovie (movie); | |
8233 | if (dh) | |
8234 | DisposeHandle (dh); | |
8235 | return 0; | |
8236 | } | |
8237 | #endif /* MAC_OS */ | |
8238 | ||
8239 | #endif /* HAVE_GIF */ | |
8240 | ||
8241 | ||
8242 | \f | |
4ab27a43 GM |
8243 | /*********************************************************************** |
8244 | SVG | |
8245 | ***********************************************************************/ | |
8246 | ||
8247 | #if defined (HAVE_RSVG) | |
8248 | ||
8249 | /* Function prototypes. */ | |
8250 | ||
8251 | static int svg_image_p P_ ((Lisp_Object object)); | |
8252 | static int svg_load P_ ((struct frame *f, struct image *img)); | |
8253 | ||
8254 | static int svg_load_image P_ ((struct frame *, struct image *, | |
8255 | unsigned char *, unsigned int)); | |
8256 | ||
8257 | /* The symbol `svg' identifying images of this type. */ | |
8258 | ||
8259 | Lisp_Object Qsvg; | |
8260 | ||
8261 | /* Indices of image specification fields in svg_format, below. */ | |
8262 | ||
8263 | enum svg_keyword_index | |
8264 | { | |
8265 | SVG_TYPE, | |
8266 | SVG_DATA, | |
8267 | SVG_FILE, | |
8268 | SVG_ASCENT, | |
8269 | SVG_MARGIN, | |
8270 | SVG_RELIEF, | |
8271 | SVG_ALGORITHM, | |
8272 | SVG_HEURISTIC_MASK, | |
8273 | SVG_MASK, | |
8274 | SVG_BACKGROUND, | |
8275 | SVG_LAST | |
8276 | }; | |
8277 | ||
8278 | /* Vector of image_keyword structures describing the format | |
8279 | of valid user-defined image specifications. */ | |
8280 | ||
8281 | static struct image_keyword svg_format[SVG_LAST] = | |
8282 | { | |
8283 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8284 | {":data", IMAGE_STRING_VALUE, 0}, | |
8285 | {":file", IMAGE_STRING_VALUE, 0}, | |
8286 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8287 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8288 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8289 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8290 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8291 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8292 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8293 | }; | |
8294 | ||
8295 | /* Structure describing the image type `svg'. Its the same type of | |
8296 | structure defined for all image formats, handled by emacs image | |
8297 | functions. See struct image_type in dispextern.h. */ | |
8298 | ||
8299 | static struct image_type svg_type = | |
8300 | { | |
8301 | /* An identifier showing that this is an image structure for the SVG format. */ | |
8302 | &Qsvg, | |
8303 | /* Handle to a function that can be used to identify a SVG file. */ | |
8304 | svg_image_p, | |
8305 | /* Handle to function used to load a SVG file. */ | |
8306 | svg_load, | |
8307 | /* Handle to function to free sresources for SVG. */ | |
8308 | x_clear_image, | |
8309 | /* An internal field to link to the next image type in a list of | |
8310 | image types, will be filled in when registering the format. */ | |
c21e6151 | 8311 | NULL |
4ab27a43 GM |
8312 | }; |
8313 | ||
8314 | ||
8315 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
8316 | this by calling parse_image_spec and supplying the keywords that | |
8317 | identify the SVG format. */ | |
8318 | ||
8319 | static int | |
8320 | svg_image_p (object) | |
8321 | Lisp_Object object; | |
8322 | { | |
8323 | struct image_keyword fmt[SVG_LAST]; | |
8324 | bcopy (svg_format, fmt, sizeof fmt); | |
8325 | ||
8326 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8327 | return 0; | |
8328 | ||
8329 | /* Must specify either the :data or :file keyword. */ | |
8330 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8331 | } | |
8332 | ||
8333 | #include <librsvg/rsvg.h> | |
8334 | ||
5fc9fdeb JR |
8335 | #ifdef HAVE_NTGUI |
8336 | ||
8337 | /* SVG library functions. */ | |
8338 | DEF_IMGLIB_FN (rsvg_handle_new); | |
8339 | DEF_IMGLIB_FN (rsvg_handle_set_size_callback); | |
8340 | DEF_IMGLIB_FN (rsvg_handle_write); | |
8341 | DEF_IMGLIB_FN (rsvg_handle_close); | |
8342 | DEF_IMGLIB_FN (rsvg_handle_get_pixbuf); | |
8343 | DEF_IMGLIB_FN (rsvg_handle_free); | |
8344 | ||
8345 | DEF_IMGLIB_FN (gdk_pixbuf_get_width); | |
8346 | DEF_IMGLIB_FN (gdk_pixbuf_get_height); | |
8347 | DEF_IMGLIB_FN (gdk_pixbuf_get_pixels); | |
8348 | DEF_IMGLIB_FN (gdk_pixbuf_get_rowstride); | |
8349 | DEF_IMGLIB_FN (gdk_pixbuf_get_colorspace); | |
8350 | DEF_IMGLIB_FN (gdk_pixbuf_get_n_channels); | |
8351 | DEF_IMGLIB_FN (gdk_pixbuf_get_has_alpha); | |
8352 | DEF_IMGLIB_FN (gdk_pixbuf_get_bits_per_sample); | |
8353 | ||
8354 | DEF_IMGLIB_FN (g_type_init); | |
8355 | DEF_IMGLIB_FN (g_object_unref); | |
8356 | DEF_IMGLIB_FN (g_error_free); | |
8357 | ||
8358 | Lisp_Object Qgdk_pixbuf, Qglib; | |
8359 | ||
8360 | static int | |
8361 | init_svg_functions (Lisp_Object libraries) | |
8362 | { | |
8363 | HMODULE library, gdklib, glib; | |
8364 | ||
8365 | if (!(glib = w32_delayed_load (libraries, Qglib)) | |
8366 | || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf)) | |
8367 | || !(library = w32_delayed_load (libraries, Qsvg))) | |
8368 | return 0; | |
8369 | ||
8370 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
8371 | LOAD_IMGLIB_FN (library, rsvg_handle_set_size_callback); | |
8372 | LOAD_IMGLIB_FN (library, rsvg_handle_write); | |
8373 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8374 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
8375 | LOAD_IMGLIB_FN (library, rsvg_handle_free); | |
8376 | ||
8377 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8378 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8379 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8380 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8381 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8382 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8383 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8384 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8385 | ||
8386 | LOAD_IMGLIB_FN (glib, g_type_init); | |
8387 | LOAD_IMGLIB_FN (glib, g_object_unref); | |
8388 | LOAD_IMGLIB_FN (glib, g_error_free); | |
8389 | return 1; | |
8390 | } | |
4ab27a43 | 8391 | |
5fc9fdeb JR |
8392 | #else |
8393 | /* The following aliases for library functions allow dynamic loading | |
8394 | to be used on some platforms. */ | |
4ab27a43 GM |
8395 | #define fn_rsvg_handle_new rsvg_handle_new |
8396 | #define fn_rsvg_handle_set_size_callback rsvg_handle_set_size_callback | |
8397 | #define fn_rsvg_handle_write rsvg_handle_write | |
8398 | #define fn_rsvg_handle_close rsvg_handle_close | |
8399 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
8400 | #define fn_rsvg_handle_free rsvg_handle_free | |
8401 | ||
5fc9fdeb JR |
8402 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8403 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8404 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8405 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8406 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8407 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8408 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8409 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8410 | ||
5fc9fdeb JR |
8411 | #define fn_g_type_init g_type_init |
8412 | #define fn_g_object_unref g_object_unref | |
8413 | #define fn_g_error_free g_error_free | |
8414 | #endif /* !HAVE_NTGUI */ | |
4ab27a43 GM |
8415 | |
8416 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8417 | successful. this function will go into the svg_type structure, and | |
8418 | the prototype thus needs to be compatible with that structure. */ | |
8419 | ||
8420 | static int | |
8421 | svg_load (f, img) | |
8422 | struct frame *f; | |
8423 | struct image *img; | |
8424 | { | |
8425 | int success_p = 0; | |
8426 | Lisp_Object file_name; | |
8427 | ||
8428 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8429 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8430 | if (STRINGP (file_name)) | |
8431 | { | |
8432 | Lisp_Object file; | |
8433 | unsigned char *contents; | |
8434 | int size; | |
8435 | struct gcpro gcpro1; | |
8436 | ||
8437 | file = x_find_image_file (file_name); | |
8438 | GCPRO1 (file); | |
8439 | if (!STRINGP (file)) | |
c21e6151 YM |
8440 | { |
8441 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
8442 | UNGCPRO; | |
8443 | return 0; | |
8444 | } | |
8445 | ||
4ab27a43 GM |
8446 | /* Read the entire file into memory. */ |
8447 | contents = slurp_file (SDATA (file), &size); | |
8448 | if (contents == NULL) | |
c21e6151 YM |
8449 | { |
8450 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
8451 | UNGCPRO; | |
8452 | return 0; | |
8453 | } | |
4ab27a43 | 8454 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8455 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 GM |
8456 | xfree (contents); |
8457 | UNGCPRO; | |
8458 | } | |
8459 | /* Else its not a file, its a lisp object. Load the image from a | |
8460 | lisp object rather than a file. */ | |
8461 | else | |
8462 | { | |
8463 | Lisp_Object data; | |
8464 | ||
8465 | data = image_spec_value (img->spec, QCdata, NULL); | |
8466 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); | |
8467 | } | |
8468 | ||
8469 | return success_p; | |
8470 | } | |
8471 | ||
bbe6f2aa JB |
8472 | /* svg_load_image is a helper function for svg_load, which does the |
8473 | actual loading given contents and size, apart from frame and image | |
8474 | structures, passed from svg_load. | |
4ab27a43 | 8475 | |
bbe6f2aa | 8476 | Uses librsvg to do most of the image processing. |
c21e6151 | 8477 | |
bbe6f2aa | 8478 | Returns non-zero when successful. */ |
4ab27a43 GM |
8479 | static int |
8480 | svg_load_image (f, img, contents, size) | |
bbe6f2aa | 8481 | /* Pointer to emacs frame structure. */ |
4ab27a43 GM |
8482 | struct frame *f; |
8483 | /* Pointer to emacs image structure. */ | |
8484 | struct image *img; | |
8485 | /* String containing the SVG XML data to be parsed. */ | |
8486 | unsigned char *contents; | |
8487 | /* Size of data in bytes. */ | |
8488 | unsigned int size; | |
8489 | { | |
8490 | RsvgHandle *rsvg_handle; | |
8491 | GError *error = NULL; | |
8492 | GdkPixbuf *pixbuf; | |
8493 | int width; | |
8494 | int height; | |
8495 | const guint8 *pixels; | |
8496 | int rowstride; | |
8497 | XImagePtr ximg; | |
c21e6151 | 8498 | Lisp_Object specified_bg; |
4ab27a43 GM |
8499 | XColor background; |
8500 | int x; | |
8501 | int y; | |
8502 | ||
8503 | /* g_type_init is a glib function that must be called prior to using | |
8504 | gnome type library functions. */ | |
5fc9fdeb | 8505 | fn_g_type_init (); |
4ab27a43 GM |
8506 | /* Make a handle to a new rsvg object. */ |
8507 | rsvg_handle = fn_rsvg_handle_new (); | |
8508 | ||
8509 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
8510 | fn_rsvg_handle_write (rsvg_handle, contents, size, &error); | |
8511 | if (error) | |
8512 | goto rsvg_error; | |
8513 | ||
8514 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8515 | for further writes. */ | |
8516 | fn_rsvg_handle_close (rsvg_handle, &error); | |
8517 | if (error) | |
8518 | goto rsvg_error; | |
8519 | /* We can now get a valid pixel buffer from the svg file, if all | |
8520 | went ok. */ | |
8521 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); | |
8522 | eassert (pixbuf); | |
8523 | ||
8524 | /* Extract some meta data from the svg handle. */ | |
8525 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8526 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
8527 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); | |
8528 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); | |
8529 | ||
8530 | /* Validate the svg meta data. */ | |
8531 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8532 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8533 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8534 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8535 | ||
8536 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8537 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8538 | { | |
5fc9fdeb | 8539 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8540 | return 0; |
8541 | } | |
4ab27a43 GM |
8542 | |
8543 | init_color_table (); | |
8544 | ||
c21e6151 YM |
8545 | /* Handle alpha channel by combining the image with a background |
8546 | color. */ | |
8547 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8548 | if (STRINGP (specified_bg) | |
8549 | && x_defined_color (f, SDATA (specified_bg), &background, 0)) | |
8550 | { | |
8551 | background.red >>= 8; | |
8552 | background.green >>= 8; | |
8553 | background.blue >>= 8; | |
8554 | } | |
8555 | else | |
8556 | { | |
4ab27a43 | 8557 | #ifdef HAVE_X_WINDOWS |
c21e6151 YM |
8558 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8559 | x_query_color (f, &background); | |
8560 | ||
8561 | /* SVG pixmaps specify transparency in the last byte, so right | |
3046a84b | 8562 | shift 8 bits to get rid of it, since emacs doesn't support |
c21e6151 YM |
8563 | transparency. */ |
8564 | background.red >>= 8; | |
8565 | background.green >>= 8; | |
8566 | background.blue >>= 8; | |
8567 | #elif defined (MAC_OS) | |
8568 | background.pixel = FRAME_BACKGROUND_PIXEL (f); | |
8569 | background.red = RED_FROM_ULONG (background.pixel); | |
8570 | background.green = GREEN_FROM_ULONG (background.pixel); | |
8571 | background.blue = BLUE_FROM_ULONG (background.pixel); | |
5fc9fdeb JR |
8572 | #elif defined (HAVE_NTGUI) |
8573 | background.pixel = FRAME_BACKGROUND_PIXEL (f); | |
8574 | #if 0 /* W32 TODO : Colormap support. */ | |
8575 | x_query_color (f, &background); | |
8576 | #endif | |
8577 | ||
8578 | /* SVG pixmaps specify transparency in the last byte, so right | |
3046a84b | 8579 | shift 8 bits to get rid of it, since emacs doesn't support |
5fc9fdeb JR |
8580 | transparency. */ |
8581 | background.red >>= 8; | |
8582 | background.green >>= 8; | |
3046a84b | 8583 | background.blue >>= 8; |
c21e6151 | 8584 | #else /* not HAVE_X_WINDOWS && not MAC_OS*/ |
4ab27a43 GM |
8585 | #error FIXME |
8586 | #endif | |
c21e6151 | 8587 | } |
4ab27a43 GM |
8588 | |
8589 | /* This loop handles opacity values, since Emacs assumes | |
8590 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8591 | calculating the resulting color, given the transparency of the |
8592 | pixel, and the image background color. */ | |
4ab27a43 GM |
8593 | for (y = 0; y < height; ++y) |
8594 | { | |
8595 | for (x = 0; x < width; ++x) | |
8596 | { | |
8597 | unsigned red; | |
8598 | unsigned green; | |
8599 | unsigned blue; | |
8600 | unsigned opacity; | |
8601 | ||
8602 | red = *pixels++; | |
8603 | green = *pixels++; | |
8604 | blue = *pixels++; | |
8605 | opacity = *pixels++; | |
8606 | ||
8607 | red = ((red * opacity) | |
8608 | + (background.red * ((1 << 8) - opacity))); | |
8609 | green = ((green * opacity) | |
8610 | + (background.green * ((1 << 8) - opacity))); | |
8611 | blue = ((blue * opacity) | |
8612 | + (background.blue * ((1 << 8) - opacity))); | |
8613 | ||
8614 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8615 | } | |
8616 | ||
8617 | pixels += rowstride - 4 * width; | |
8618 | } | |
8619 | ||
8620 | #ifdef COLOR_TABLE_SUPPORT | |
8621 | /* Remember colors allocated for this image. */ | |
8622 | img->colors = colors_in_color_table (&img->ncolors); | |
8623 | free_color_table (); | |
8624 | #endif /* COLOR_TABLE_SUPPORT */ | |
8625 | ||
5fc9fdeb | 8626 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8627 | |
c21e6151 YM |
8628 | img->width = width; |
8629 | img->height = height; | |
8630 | ||
8631 | /* Maybe fill in the background field while we have ximg handy. | |
8632 | Casting avoids a GCC warning. */ | |
8633 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8634 | ||
4ab27a43 GM |
8635 | /* Put the image into the pixmap, then free the X image and its |
8636 | buffer. */ | |
8637 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8638 | x_destroy_x_image (ximg); | |
8639 | ||
4ab27a43 GM |
8640 | return 1; |
8641 | ||
8642 | rsvg_error: | |
8643 | /* FIXME: Use error->message so the user knows what is the actual | |
8644 | problem with the image. */ | |
8645 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
5fc9fdeb | 8646 | fn_g_error_free (error); |
4ab27a43 GM |
8647 | return 0; |
8648 | } | |
8649 | ||
8650 | #endif /* defined (HAVE_RSVG) */ | |
8651 | ||
8652 | ||
8653 | ||
4ef0d4d0 KS |
8654 | \f |
8655 | /*********************************************************************** | |
8656 | Ghostscript | |
8657 | ***********************************************************************/ | |
8658 | ||
8659 | #ifdef HAVE_X_WINDOWS | |
8660 | #define HAVE_GHOSTSCRIPT 1 | |
8661 | #endif /* HAVE_X_WINDOWS */ | |
8662 | ||
8663 | /* The symbol `postscript' identifying images of this type. */ | |
8664 | ||
8665 | Lisp_Object Qpostscript; | |
8666 | ||
8667 | #ifdef HAVE_GHOSTSCRIPT | |
8668 | ||
8669 | static int gs_image_p P_ ((Lisp_Object object)); | |
8670 | static int gs_load P_ ((struct frame *f, struct image *img)); | |
8671 | static void gs_clear_image P_ ((struct frame *f, struct image *img)); | |
8672 | ||
8673 | /* Keyword symbols. */ | |
8674 | ||
8675 | Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; | |
8676 | ||
8677 | /* Indices of image specification fields in gs_format, below. */ | |
8678 | ||
8679 | enum gs_keyword_index | |
8680 | { | |
8681 | GS_TYPE, | |
8682 | GS_PT_WIDTH, | |
8683 | GS_PT_HEIGHT, | |
8684 | GS_FILE, | |
8685 | GS_LOADER, | |
8686 | GS_BOUNDING_BOX, | |
8687 | GS_ASCENT, | |
8688 | GS_MARGIN, | |
8689 | GS_RELIEF, | |
8690 | GS_ALGORITHM, | |
8691 | GS_HEURISTIC_MASK, | |
8692 | GS_MASK, | |
8693 | GS_BACKGROUND, | |
8694 | GS_LAST | |
8695 | }; | |
8696 | ||
8697 | /* Vector of image_keyword structures describing the format | |
8698 | of valid user-defined image specifications. */ | |
8699 | ||
8700 | static struct image_keyword gs_format[GS_LAST] = | |
8701 | { | |
8702 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8703 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8704 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8705 | {":file", IMAGE_STRING_VALUE, 1}, | |
8706 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8707 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8708 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8709 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8710 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8711 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8712 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8713 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8714 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8715 | }; | |
8716 | ||
8717 | /* Structure describing the image type `ghostscript'. */ | |
8718 | ||
8719 | static struct image_type gs_type = | |
8720 | { | |
8721 | &Qpostscript, | |
8722 | gs_image_p, | |
8723 | gs_load, | |
8724 | gs_clear_image, | |
8725 | NULL | |
8726 | }; | |
8727 | ||
8728 | ||
8729 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8730 | ||
8731 | static void | |
8732 | gs_clear_image (f, img) | |
8733 | struct frame *f; | |
8734 | struct image *img; | |
8735 | { | |
8736 | /* IMG->data.ptr_val may contain a recorded colormap. */ | |
8737 | xfree (img->data.ptr_val); | |
8738 | x_clear_image (f, img); | |
8739 | } | |
8740 | ||
8741 | ||
8742 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8743 | specification. */ | |
8744 | ||
8745 | static int | |
8746 | gs_image_p (object) | |
8747 | Lisp_Object object; | |
8748 | { | |
8749 | struct image_keyword fmt[GS_LAST]; | |
8750 | Lisp_Object tem; | |
8751 | int i; | |
8752 | ||
8753 | bcopy (gs_format, fmt, sizeof fmt); | |
8754 | ||
8755 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8756 | return 0; | |
8757 | ||
8758 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8759 | tem = fmt[GS_BOUNDING_BOX].value; | |
8760 | if (CONSP (tem)) | |
8761 | { | |
8762 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8763 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8764 | return 0; | |
8765 | if (!NILP (tem)) | |
8766 | return 0; | |
8767 | } | |
8768 | else if (VECTORP (tem)) | |
8769 | { | |
8770 | if (XVECTOR (tem)->size != 4) | |
8771 | return 0; | |
8772 | for (i = 0; i < 4; ++i) | |
8773 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8774 | return 0; | |
8775 | } | |
8776 | else | |
8777 | return 0; | |
8778 | ||
8779 | return 1; | |
8780 | } | |
8781 | ||
8782 | ||
8783 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8784 | if successful. */ | |
8785 | ||
8786 | static int | |
8787 | gs_load (f, img) | |
8788 | struct frame *f; | |
8789 | struct image *img; | |
8790 | { | |
8791 | char buffer[100]; | |
8792 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; | |
8793 | struct gcpro gcpro1, gcpro2; | |
8794 | Lisp_Object frame; | |
8795 | double in_width, in_height; | |
8796 | Lisp_Object pixel_colors = Qnil; | |
8797 | ||
8798 | /* Compute pixel size of pixmap needed from the given size in the | |
8799 | image specification. Sizes in the specification are in pt. 1 pt | |
8800 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8801 | info. */ | |
8802 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
8803 | in_width = XFASTINT (pt_width) / 72.0; | |
8804 | img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx; | |
8805 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); | |
8806 | in_height = XFASTINT (pt_height) / 72.0; | |
8807 | img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy; | |
8808 | ||
f1f25b99 CY |
8809 | if (!check_image_size (f, img->width, img->height)) |
8810 | { | |
8811 | image_error ("Invalid image size", Qnil, Qnil); | |
8812 | return 0; | |
8813 | } | |
8814 | ||
4ef0d4d0 KS |
8815 | /* Create the pixmap. */ |
8816 | xassert (img->pixmap == NO_PIXMAP); | |
8817 | ||
8818 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8819 | BLOCK_INPUT; | |
8820 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8821 | img->width, img->height, | |
8822 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8823 | UNBLOCK_INPUT; | |
8824 | ||
8825 | if (!img->pixmap) | |
8826 | { | |
8827 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8828 | return 0; | |
8829 | } | |
8830 | ||
8831 | /* Call the loader to fill the pixmap. It returns a process object | |
8832 | if successful. We do not record_unwind_protect here because | |
8833 | other places in redisplay like calling window scroll functions | |
8834 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
8835 | GCPRO2 (window_and_pixmap_id, pixel_colors); | |
8836 | ||
8837 | sprintf (buffer, "%lu %lu", | |
8838 | (unsigned long) FRAME_X_WINDOW (f), | |
8839 | (unsigned long) img->pixmap); | |
8840 | window_and_pixmap_id = build_string (buffer); | |
8841 | ||
8842 | sprintf (buffer, "%lu %lu", | |
8843 | FRAME_FOREGROUND_PIXEL (f), | |
8844 | FRAME_BACKGROUND_PIXEL (f)); | |
8845 | pixel_colors = build_string (buffer); | |
8846 | ||
8847 | XSETFRAME (frame, f); | |
8848 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8849 | if (NILP (loader)) | |
8850 | loader = intern ("gs-load-image"); | |
8851 | ||
8852 | img->data.lisp_val = call6 (loader, frame, img->spec, | |
8853 | make_number (img->width), | |
8854 | make_number (img->height), | |
8855 | window_and_pixmap_id, | |
8856 | pixel_colors); | |
8857 | UNGCPRO; | |
8858 | return PROCESSP (img->data.lisp_val); | |
8859 | } | |
8860 | ||
8861 | ||
8862 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8863 | frame F. Called from XTread_socket when receiving an event | |
8864 | telling Emacs that Ghostscript has finished drawing. */ | |
8865 | ||
8866 | void | |
8867 | x_kill_gs_process (pixmap, f) | |
8868 | Pixmap pixmap; | |
8869 | struct frame *f; | |
8870 | { | |
354884c4 | 8871 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
8872 | int class, i; |
8873 | struct image *img; | |
8874 | ||
8875 | /* Find the image containing PIXMAP. */ | |
8876 | for (i = 0; i < c->used; ++i) | |
8877 | if (c->images[i]->pixmap == pixmap) | |
8878 | break; | |
8879 | ||
8880 | /* Should someone in between have cleared the image cache, for | |
8881 | instance, give up. */ | |
8882 | if (i == c->used) | |
8883 | return; | |
8884 | ||
8885 | /* Kill the GS process. We should have found PIXMAP in the image | |
8886 | cache and its image should contain a process object. */ | |
8887 | img = c->images[i]; | |
8888 | xassert (PROCESSP (img->data.lisp_val)); | |
8889 | Fkill_process (img->data.lisp_val, Qnil); | |
8890 | img->data.lisp_val = Qnil; | |
8891 | ||
8892 | #if defined (HAVE_X_WINDOWS) | |
8893 | ||
8894 | /* On displays with a mutable colormap, figure out the colors | |
8895 | allocated for the image by looking at the pixels of an XImage for | |
8896 | img->pixmap. */ | |
8897 | class = FRAME_X_VISUAL (f)->class; | |
8898 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8899 | { | |
8900 | XImagePtr ximg; | |
8901 | ||
8902 | BLOCK_INPUT; | |
8903 | ||
8904 | /* Try to get an XImage for img->pixmep. */ | |
8905 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8906 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8907 | if (ximg) | |
8908 | { | |
8909 | int x, y; | |
8910 | ||
8911 | /* Initialize the color table. */ | |
8912 | init_color_table (); | |
8913 | ||
8914 | /* For each pixel of the image, look its color up in the | |
8915 | color table. After having done so, the color table will | |
8916 | contain an entry for each color used by the image. */ | |
8917 | for (y = 0; y < img->height; ++y) | |
8918 | for (x = 0; x < img->width; ++x) | |
8919 | { | |
8920 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8921 | lookup_pixel_color (f, pixel); | |
8922 | } | |
8923 | ||
8924 | /* Record colors in the image. Free color table and XImage. */ | |
8925 | #ifdef COLOR_TABLE_SUPPORT | |
8926 | img->colors = colors_in_color_table (&img->ncolors); | |
8927 | free_color_table (); | |
8928 | #endif | |
8929 | XDestroyImage (ximg); | |
8930 | ||
8931 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8932 | here, we get a BadAccess later in x_clear_image when | |
8933 | freeing the colors. */ | |
8934 | /* We have allocated colors once, but Ghostscript has also | |
8935 | allocated colors on behalf of us. So, to get the | |
8936 | reference counts right, free them once. */ | |
8937 | if (img->ncolors) | |
8938 | x_free_colors (f, img->colors, img->ncolors); | |
8939 | #endif | |
8940 | } | |
8941 | else | |
8942 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8943 | img->spec, Qnil); | |
8944 | ||
8945 | UNBLOCK_INPUT; | |
8946 | } | |
8947 | #endif /* HAVE_X_WINDOWS */ | |
8948 | ||
8949 | /* Now that we have the pixmap, compute mask and transform the | |
8950 | image if requested. */ | |
8951 | BLOCK_INPUT; | |
8952 | postprocess_image (f, img); | |
8953 | UNBLOCK_INPUT; | |
8954 | } | |
8955 | ||
8956 | #endif /* HAVE_GHOSTSCRIPT */ | |
8957 | ||
8958 | \f | |
8959 | /*********************************************************************** | |
8960 | Tests | |
8961 | ***********************************************************************/ | |
8962 | ||
8963 | #if GLYPH_DEBUG | |
8964 | ||
8965 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, | |
8966 | doc: /* Value is non-nil if SPEC is a valid image specification. */) | |
8967 | (spec) | |
8968 | Lisp_Object spec; | |
8969 | { | |
8970 | return valid_image_p (spec) ? Qt : Qnil; | |
8971 | } | |
8972 | ||
8973 | ||
8974 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") | |
8975 | (spec) | |
8976 | Lisp_Object spec; | |
8977 | { | |
8978 | int id = -1; | |
8979 | ||
8980 | if (valid_image_p (spec)) | |
8981 | id = lookup_image (SELECTED_FRAME (), spec); | |
8982 | ||
8983 | debug_print (spec); | |
8984 | return make_number (id); | |
8985 | } | |
8986 | ||
8987 | #endif /* GLYPH_DEBUG != 0 */ | |
8988 | ||
8989 | ||
8990 | /*********************************************************************** | |
8991 | Initialization | |
8992 | ***********************************************************************/ | |
8993 | ||
0855eb52 JB |
8994 | #ifdef HAVE_NTGUI |
8995 | /* Image types that rely on external libraries are loaded dynamically | |
8996 | if the library is available. */ | |
adac86db | 8997 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8998 | define_image_type (image_type, init_lib_fn (libraries)) |
8999 | #else | |
adac86db | 9000 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 9001 | define_image_type (image_type, 1) |
0855eb52 JB |
9002 | #endif /* HAVE_NTGUI */ |
9003 | ||
9004 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
9005 | doc: /* Initialize image library implementing image type TYPE. | |
9006 | Return non-nil if TYPE is a supported image type. | |
9007 | ||
9008 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
9009 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
adac86db | 9010 | of `image-library-alist', which see). */) |
0855eb52 | 9011 | (type, libraries) |
adac86db | 9012 | Lisp_Object type, libraries; |
0855eb52 JB |
9013 | { |
9014 | Lisp_Object tested; | |
9015 | ||
9016 | /* Don't try to reload the library. */ | |
9017 | tested = Fassq (type, Vimage_type_cache); | |
9018 | if (CONSP (tested)) | |
9019 | return XCDR (tested); | |
9020 | ||
9021 | #if defined (HAVE_XPM) || defined (MAC_OS) | |
9022 | if (EQ (type, Qxpm)) | |
adac86db | 9023 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
9024 | #endif |
9025 | ||
9026 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
9027 | if (EQ (type, Qjpeg)) | |
adac86db | 9028 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
9029 | #endif |
9030 | ||
9031 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
9032 | if (EQ (type, Qtiff)) | |
adac86db | 9033 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
9034 | #endif |
9035 | ||
9036 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
9037 | if (EQ (type, Qgif)) | |
adac86db | 9038 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
9039 | #endif |
9040 | ||
9041 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
9042 | if (EQ (type, Qpng)) | |
adac86db | 9043 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
9044 | #endif |
9045 | ||
4ab27a43 GM |
9046 | #if defined (HAVE_RSVG) |
9047 | if (EQ (type, Qsvg)) | |
9048 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
9049 | #endif | |
c21e6151 | 9050 | |
0855eb52 JB |
9051 | #ifdef HAVE_GHOSTSCRIPT |
9052 | if (EQ (type, Qpostscript)) | |
adac86db | 9053 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
9054 | #endif |
9055 | ||
9056 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 9057 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
9058 | return Qnil; |
9059 | } | |
9060 | ||
4ef0d4d0 KS |
9061 | void |
9062 | syms_of_image () | |
9063 | { | |
2a611c1a JB |
9064 | extern Lisp_Object Qrisky_local_variable; /* Syms_of_xdisp has already run. */ |
9065 | ||
6e6fc3fd RS |
9066 | /* Initialize this only once, since that's what we do with Vimage_types |
9067 | and they are supposed to be in sync. Initializing here gives correct | |
9068 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
9069 | image_types = NULL; | |
9070 | ||
0855eb52 JB |
9071 | /* Must be defined now becase we're going to update it below, while |
9072 | defining the supported image types. */ | |
9073 | DEFVAR_LISP ("image-types", &Vimage_types, | |
9074 | doc: /* List of potentially supported image types. | |
bbe6f2aa | 9075 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
9076 | To check whether it is really supported, use `image-type-available-p'. */); |
9077 | Vimage_types = Qnil; | |
9078 | ||
2a611c1a JB |
9079 | DEFVAR_LISP ("image-library-alist", &Vimage_library_alist, |
9080 | doc: /* Alist of image types vs external libraries needed to display them. | |
9081 | ||
9082 | Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol | |
9083 | representing a supported image type, and the rest are strings giving | |
9084 | alternate filenames for the corresponding external libraries. | |
9085 | ||
9086 | Emacs tries to load the libraries in the order they appear on the | |
9087 | list; if none is loaded, the running session of Emacs won't | |
9088 | support the image type. Types 'pbm and 'xbm don't need to be | |
3046a84b | 9089 | listed; they are always supported. */); |
2a611c1a JB |
9090 | Vimage_library_alist = Qnil; |
9091 | Fput (intern ("image-library-alist"), Qrisky_local_variable, Qt); | |
9092 | ||
f1f25b99 | 9093 | DEFVAR_LISP ("max-image-size", &Vmax_image_size, |
7df4765a KS |
9094 | doc: /* Maximum size of images. |
9095 | Emacs will not load an image into memory if its pixel width or | |
9096 | pixel height exceeds this limit. | |
9097 | ||
9098 | If the value is an integer, it directly specifies the maximum | |
9099 | image height and width, measured in pixels. If it is a floating | |
9100 | point number, it specifies the maximum image height and width | |
9101 | as a ratio to the frame height and width. If the value is | |
9102 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
9103 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
9104 | ||
0855eb52 JB |
9105 | Vimage_type_cache = Qnil; |
9106 | staticpro (&Vimage_type_cache); | |
9107 | ||
7c4e3a32 RS |
9108 | Qpbm = intern ("pbm"); |
9109 | staticpro (&Qpbm); | |
5fc9fdeb | 9110 | ADD_IMAGE_TYPE (Qpbm); |
7c4e3a32 RS |
9111 | |
9112 | Qxbm = intern ("xbm"); | |
9113 | staticpro (&Qxbm); | |
5fc9fdeb | 9114 | ADD_IMAGE_TYPE (Qxbm); |
7c4e3a32 RS |
9115 | |
9116 | define_image_type (&xbm_type, 1); | |
9117 | define_image_type (&pbm_type, 1); | |
9118 | ||
e047f448 SM |
9119 | Qcount = intern ("count"); |
9120 | staticpro (&Qcount); | |
9121 | ||
4ef0d4d0 KS |
9122 | QCascent = intern (":ascent"); |
9123 | staticpro (&QCascent); | |
9124 | QCmargin = intern (":margin"); | |
9125 | staticpro (&QCmargin); | |
9126 | QCrelief = intern (":relief"); | |
9127 | staticpro (&QCrelief); | |
9128 | QCconversion = intern (":conversion"); | |
9129 | staticpro (&QCconversion); | |
9130 | QCcolor_symbols = intern (":color-symbols"); | |
9131 | staticpro (&QCcolor_symbols); | |
9132 | QCheuristic_mask = intern (":heuristic-mask"); | |
9133 | staticpro (&QCheuristic_mask); | |
9134 | QCindex = intern (":index"); | |
9135 | staticpro (&QCindex); | |
9136 | QCmatrix = intern (":matrix"); | |
9137 | staticpro (&QCmatrix); | |
9138 | QCcolor_adjustment = intern (":color-adjustment"); | |
9139 | staticpro (&QCcolor_adjustment); | |
9140 | QCmask = intern (":mask"); | |
9141 | staticpro (&QCmask); | |
9142 | ||
9143 | Qlaplace = intern ("laplace"); | |
9144 | staticpro (&Qlaplace); | |
9145 | Qemboss = intern ("emboss"); | |
9146 | staticpro (&Qemboss); | |
9147 | Qedge_detection = intern ("edge-detection"); | |
9148 | staticpro (&Qedge_detection); | |
9149 | Qheuristic = intern ("heuristic"); | |
9150 | staticpro (&Qheuristic); | |
4ef0d4d0 KS |
9151 | |
9152 | Qpostscript = intern ("postscript"); | |
9153 | staticpro (&Qpostscript); | |
9154 | #ifdef HAVE_GHOSTSCRIPT | |
5fc9fdeb | 9155 | ADD_IMAGE_TYPE (Qpostscript); |
4ef0d4d0 KS |
9156 | QCloader = intern (":loader"); |
9157 | staticpro (&QCloader); | |
9158 | QCbounding_box = intern (":bounding-box"); | |
9159 | staticpro (&QCbounding_box); | |
9160 | QCpt_width = intern (":pt-width"); | |
9161 | staticpro (&QCpt_width); | |
9162 | QCpt_height = intern (":pt-height"); | |
9163 | staticpro (&QCpt_height); | |
9164 | #endif /* HAVE_GHOSTSCRIPT */ | |
9165 | ||
ea1aaa6f | 9166 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
9167 | Qxpm = intern ("xpm"); |
9168 | staticpro (&Qxpm); | |
5fc9fdeb | 9169 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
9170 | #endif |
9171 | ||
9172 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
9173 | Qjpeg = intern ("jpeg"); | |
9174 | staticpro (&Qjpeg); | |
5fc9fdeb | 9175 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
9176 | #endif |
9177 | ||
9178 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
9179 | Qtiff = intern ("tiff"); | |
9180 | staticpro (&Qtiff); | |
5fc9fdeb | 9181 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
9182 | #endif |
9183 | ||
9184 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
9185 | Qgif = intern ("gif"); | |
9186 | staticpro (&Qgif); | |
5fc9fdeb | 9187 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
9188 | #endif |
9189 | ||
9190 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
9191 | Qpng = intern ("png"); | |
9192 | staticpro (&Qpng); | |
5fc9fdeb | 9193 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
9194 | #endif |
9195 | ||
4ab27a43 GM |
9196 | #if defined (HAVE_RSVG) |
9197 | Qsvg = intern ("svg"); | |
9198 | staticpro (&Qsvg); | |
5fc9fdeb JR |
9199 | ADD_IMAGE_TYPE (Qsvg); |
9200 | #ifdef HAVE_NTGUI | |
9201 | Qgdk_pixbuf = intern ("gdk-pixbuf"); | |
9202 | staticpro (&Qgdk_pixbuf); | |
9203 | Qglib = intern ("glib"); | |
9204 | staticpro (&Qglib); | |
9205 | #endif /* HAVE_NTGUI */ | |
9206 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 9207 | |
0855eb52 | 9208 | defsubr (&Sinit_image_library); |
4ef0d4d0 | 9209 | defsubr (&Sclear_image_cache); |
483e7ae0 | 9210 | defsubr (&Simage_refresh); |
4ef0d4d0 KS |
9211 | defsubr (&Simage_size); |
9212 | defsubr (&Simage_mask_p); | |
6ac3c7bb | 9213 | defsubr (&Simage_extension_data); |
4ef0d4d0 KS |
9214 | |
9215 | #if GLYPH_DEBUG | |
9216 | defsubr (&Simagep); | |
9217 | defsubr (&Slookup_image); | |
9218 | #endif | |
9219 | ||
9220 | DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images, | |
9221 | doc: /* Non-nil means always draw a cross over disabled images. | |
3046a84b | 9222 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
9223 | A cross is always drawn on black & white displays. */); |
9224 | cross_disabled_images = 0; | |
9225 | ||
9226 | DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path, | |
9227 | doc: /* List of directories to search for window system bitmap files. */); | |
9228 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
9229 | ||
9230 | DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay, | |
9231 | doc: /* Time after which cached images are removed from the cache. | |
9232 | When an image has not been displayed this many seconds, remove it | |
9233 | from the image cache. Value must be an integer or nil with nil | |
9234 | meaning don't clear the cache. */); | |
9235 | Vimage_cache_eviction_delay = make_number (30 * 60); | |
9236 | } | |
9237 | ||
4ef0d4d0 KS |
9238 | void |
9239 | init_image () | |
9240 | { | |
dac5344b | 9241 | #if defined (MAC_OSX) && TARGET_API_MAC_CARBON |
4ef0d4d0 KS |
9242 | init_image_func_pointer (); |
9243 | #endif | |
4ef0d4d0 KS |
9244 | } |
9245 | ||
1b9f8cec MB |
9246 | /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9 |
9247 | (do not change this comment) */ |