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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, |
6678dc11 GM |
3 | 2001, 2002, 2003, 2004, 2005, 2006, 2007 |
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 | |
535 | Free_Bitmap_Record (dpyinfo, bm) | |
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; | |
577 | Free_Bitmap_Record (dpyinfo, bm); | |
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) | |
594 | Free_Bitmap_Record (dpyinfo, bm); | |
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; | |
6ac3c7bb | 736 | extern Lisp_Object QCdata, QCtype, Qcount; |
e1dfec15 | 737 | extern Lisp_Object Qcenter; |
4ef0d4d0 KS |
738 | Lisp_Object QCascent, QCmargin, QCrelief; |
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 | { | |
1210 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
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 */ | |
1321 | ascent = height / 2 - (FONT_DESCENT(face->font) | |
1322 | - FONT_BASE(face->font)) / 2; | |
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; |
d3c35d17 | 1645 | struct image_cache *c = FRAME_X_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 | { | |
1692 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
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); | |
1705 | FRAME_X_IMAGE_CACHE (f) = NULL; | |
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 | |
1713 | reduce the number of loaded images. If image-eviction-seconds is | |
1714 | non-nil, this frees images in the cache which weren't displayed for | |
1715 | at least that many seconds. */ | |
1716 | ||
1717 | void | |
1718 | clear_image_cache (f, force_p) | |
1719 | struct frame *f; | |
1720 | int force_p; | |
1721 | { | |
1722 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
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); | |
1759 | if (FRAME_WINDOW_P (f) | |
1760 | && FRAME_X_IMAGE_CACHE (f) == c) | |
1761 | clear_current_matrices (f); | |
1762 | } | |
1763 | ||
1764 | ++windows_or_buffers_changed; | |
1765 | } | |
1766 | ||
1767 | UNBLOCK_INPUT; | |
1768 | } | |
1769 | } | |
1770 | ||
1771 | ||
1772 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1773 | 0, 1, 0, | |
1774 | doc: /* Clear the image cache of FRAME. | |
1775 | FRAME nil or omitted means use the selected frame. | |
1776 | FRAME t means clear the image caches of all frames. */) | |
1777 | (frame) | |
1778 | Lisp_Object frame; | |
1779 | { | |
1780 | if (EQ (frame, Qt)) | |
1781 | { | |
1782 | Lisp_Object tail; | |
1783 | ||
1784 | FOR_EACH_FRAME (tail, frame) | |
1785 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
1786 | clear_image_cache (XFRAME (frame), 1); | |
1787 | } | |
1788 | else | |
1789 | clear_image_cache (check_x_frame (frame), 1); | |
1790 | ||
1791 | return Qnil; | |
1792 | } | |
1793 | ||
1794 | ||
483e7ae0 CY |
1795 | DEFUN ("image-refresh", Fimage_refresh, Simage_refresh, |
1796 | 1, 2, 0, | |
1797 | doc: /* Refresh the image with specification SPEC on frame FRAME. | |
1798 | If SPEC specifies an image file, the displayed image is updated with | |
1799 | the current contents of that file. | |
1800 | FRAME nil or omitted means use the selected frame. | |
1801 | FRAME t means refresh the image on all frames. */) | |
1802 | (spec, frame) | |
1803 | Lisp_Object spec, frame; | |
1804 | { | |
1805 | if (!valid_image_p (spec)) | |
1806 | error ("Invalid image specification"); | |
1807 | ||
1808 | if (EQ (frame, Qt)) | |
1809 | { | |
1810 | Lisp_Object tail; | |
1811 | FOR_EACH_FRAME (tail, frame) | |
1812 | { | |
1813 | struct frame *f = XFRAME (frame); | |
1814 | if (FRAME_WINDOW_P (f)) | |
1815 | uncache_image (f, spec); | |
1816 | } | |
1817 | } | |
1818 | else | |
1819 | uncache_image (check_x_frame (frame), spec); | |
1820 | ||
1821 | return Qnil; | |
1822 | } | |
1823 | ||
1824 | ||
4ef0d4d0 KS |
1825 | /* Compute masks and transform image IMG on frame F, as specified |
1826 | by the image's specification, */ | |
1827 | ||
1828 | static void | |
1829 | postprocess_image (f, img) | |
1830 | struct frame *f; | |
1831 | struct image *img; | |
1832 | { | |
1833 | /* Manipulation of the image's mask. */ | |
1834 | if (img->pixmap) | |
1835 | { | |
1836 | Lisp_Object conversion, spec; | |
1837 | Lisp_Object mask; | |
1838 | ||
1839 | spec = img->spec; | |
1840 | ||
1841 | /* `:heuristic-mask t' | |
1842 | `:mask heuristic' | |
1843 | means build a mask heuristically. | |
1844 | `:heuristic-mask (R G B)' | |
1845 | `:mask (heuristic (R G B))' | |
1846 | means build a mask from color (R G B) in the | |
1847 | image. | |
1848 | `:mask nil' | |
1849 | means remove a mask, if any. */ | |
1850 | ||
1851 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1852 | if (!NILP (mask)) | |
1853 | x_build_heuristic_mask (f, img, mask); | |
1854 | else | |
1855 | { | |
1856 | int found_p; | |
1857 | ||
1858 | mask = image_spec_value (spec, QCmask, &found_p); | |
1859 | ||
1860 | if (EQ (mask, Qheuristic)) | |
1861 | x_build_heuristic_mask (f, img, Qt); | |
1862 | else if (CONSP (mask) | |
1863 | && EQ (XCAR (mask), Qheuristic)) | |
1864 | { | |
1865 | if (CONSP (XCDR (mask))) | |
1866 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1867 | else | |
1868 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1869 | } | |
1870 | else if (NILP (mask) && found_p && img->mask) | |
1871 | { | |
1872 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1873 | img->mask = NO_PIXMAP; | |
1874 | } | |
1875 | } | |
1876 | ||
1877 | ||
1878 | /* Should we apply an image transformation algorithm? */ | |
1879 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1880 | if (EQ (conversion, Qdisabled)) | |
1881 | x_disable_image (f, img); | |
1882 | else if (EQ (conversion, Qlaplace)) | |
1883 | x_laplace (f, img); | |
1884 | else if (EQ (conversion, Qemboss)) | |
1885 | x_emboss (f, img); | |
1886 | else if (CONSP (conversion) | |
1887 | && EQ (XCAR (conversion), Qedge_detection)) | |
1888 | { | |
1889 | Lisp_Object tem; | |
1890 | tem = XCDR (conversion); | |
1891 | if (CONSP (tem)) | |
1892 | x_edge_detection (f, img, | |
1893 | Fplist_get (tem, QCmatrix), | |
1894 | Fplist_get (tem, QCcolor_adjustment)); | |
1895 | } | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | ||
1900 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1901 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1902 | ||
1903 | int | |
1904 | lookup_image (f, spec) | |
1905 | struct frame *f; | |
1906 | Lisp_Object spec; | |
1907 | { | |
4ef0d4d0 | 1908 | struct image *img; |
4ef0d4d0 KS |
1909 | unsigned hash; |
1910 | struct gcpro gcpro1; | |
1911 | EMACS_TIME now; | |
1912 | ||
1913 | /* F must be a window-system frame, and SPEC must be a valid image | |
1914 | specification. */ | |
1915 | xassert (FRAME_WINDOW_P (f)); | |
1916 | xassert (valid_image_p (spec)); | |
1917 | ||
1918 | GCPRO1 (spec); | |
1919 | ||
1920 | /* Look up SPEC in the hash table of the image cache. */ | |
1921 | hash = sxhash (spec, 0); | |
d3c35d17 | 1922 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1923 | if (img && img->load_failed_p) |
1924 | { | |
1925 | free_image (f, img); | |
1926 | img = NULL; | |
1927 | } | |
1928 | ||
4ef0d4d0 KS |
1929 | /* If not found, create a new image and cache it. */ |
1930 | if (img == NULL) | |
1931 | { | |
1932 | extern Lisp_Object Qpostscript; | |
1933 | ||
1934 | BLOCK_INPUT; | |
1935 | img = make_image (spec, hash); | |
1936 | cache_image (f, img); | |
1937 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1938 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1939 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1940 | |
1941 | /* If we can't load the image, and we don't have a width and | |
1942 | height, use some arbitrary width and height so that we can | |
1943 | draw a rectangle for it. */ | |
1944 | if (img->load_failed_p) | |
1945 | { | |
1946 | Lisp_Object value; | |
1947 | ||
1948 | value = image_spec_value (spec, QCwidth, NULL); | |
1949 | img->width = (INTEGERP (value) | |
1950 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1951 | value = image_spec_value (spec, QCheight, NULL); | |
1952 | img->height = (INTEGERP (value) | |
1953 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1954 | } | |
1955 | else | |
1956 | { | |
1957 | /* Handle image type independent image attributes | |
1958 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1959 | `:background COLOR'. */ | |
1960 | Lisp_Object ascent, margin, relief, bg; | |
1961 | ||
1962 | ascent = image_spec_value (spec, QCascent, NULL); | |
1963 | if (INTEGERP (ascent)) | |
1964 | img->ascent = XFASTINT (ascent); | |
1965 | else if (EQ (ascent, Qcenter)) | |
1966 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1967 | ||
1968 | margin = image_spec_value (spec, QCmargin, NULL); | |
1969 | if (INTEGERP (margin) && XINT (margin) >= 0) | |
1970 | img->vmargin = img->hmargin = XFASTINT (margin); | |
1971 | else if (CONSP (margin) && INTEGERP (XCAR (margin)) | |
1972 | && INTEGERP (XCDR (margin))) | |
1973 | { | |
1974 | if (XINT (XCAR (margin)) > 0) | |
1975 | img->hmargin = XFASTINT (XCAR (margin)); | |
1976 | if (XINT (XCDR (margin)) > 0) | |
1977 | img->vmargin = XFASTINT (XCDR (margin)); | |
1978 | } | |
1979 | ||
1980 | relief = image_spec_value (spec, QCrelief, NULL); | |
1981 | if (INTEGERP (relief)) | |
1982 | { | |
1983 | img->relief = XINT (relief); | |
1984 | img->hmargin += abs (img->relief); | |
1985 | img->vmargin += abs (img->relief); | |
1986 | } | |
1987 | ||
1988 | if (! img->background_valid) | |
1989 | { | |
1990 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1991 | if (!NILP (bg)) | |
1992 | { | |
1993 | img->background | |
1994 | = x_alloc_image_color (f, img, bg, | |
1995 | FRAME_BACKGROUND_PIXEL (f)); | |
1996 | img->background_valid = 1; | |
1997 | } | |
1998 | } | |
1999 | ||
2000 | /* Do image transformations and compute masks, unless we | |
2001 | don't have the image yet. */ | |
2002 | if (!EQ (*img->type->type, Qpostscript)) | |
2003 | postprocess_image (f, img); | |
2004 | } | |
2005 | ||
2006 | UNBLOCK_INPUT; | |
2007 | } | |
2008 | ||
2009 | /* We're using IMG, so set its timestamp to `now'. */ | |
2010 | EMACS_GET_TIME (now); | |
2011 | img->timestamp = EMACS_SECS (now); | |
2012 | ||
2013 | UNGCPRO; | |
2014 | ||
2015 | /* Value is the image id. */ | |
2016 | return img->id; | |
2017 | } | |
2018 | ||
2019 | ||
2020 | /* Cache image IMG in the image cache of frame F. */ | |
2021 | ||
2022 | static void | |
2023 | cache_image (f, img) | |
2024 | struct frame *f; | |
2025 | struct image *img; | |
2026 | { | |
2027 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
2028 | int i; | |
2029 | ||
2030 | /* Find a free slot in c->images. */ | |
2031 | for (i = 0; i < c->used; ++i) | |
2032 | if (c->images[i] == NULL) | |
2033 | break; | |
2034 | ||
2035 | /* If no free slot found, maybe enlarge c->images. */ | |
2036 | if (i == c->used && c->used == c->size) | |
2037 | { | |
2038 | c->size *= 2; | |
2039 | c->images = (struct image **) xrealloc (c->images, | |
2040 | c->size * sizeof *c->images); | |
2041 | } | |
2042 | ||
2043 | /* Add IMG to c->images, and assign IMG an id. */ | |
2044 | c->images[i] = img; | |
2045 | img->id = i; | |
2046 | if (i == c->used) | |
2047 | ++c->used; | |
2048 | ||
2049 | /* Add IMG to the cache's hash table. */ | |
2050 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
2051 | img->next = c->buckets[i]; | |
2052 | if (img->next) | |
2053 | img->next->prev = img; | |
2054 | img->prev = NULL; | |
2055 | c->buckets[i] = img; | |
2056 | } | |
2057 | ||
2058 | ||
2059 | /* Call FN on every image in the image cache of frame F. Used to mark | |
2060 | Lisp Objects in the image cache. */ | |
2061 | ||
2062 | void | |
2063 | forall_images_in_image_cache (f, fn) | |
2064 | struct frame *f; | |
2065 | void (*fn) P_ ((struct image *img)); | |
2066 | { | |
2067 | if (FRAME_LIVE_P (f) && FRAME_WINDOW_P (f)) | |
2068 | { | |
2069 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
2070 | if (c) | |
2071 | { | |
2072 | int i; | |
2073 | for (i = 0; i < c->used; ++i) | |
2074 | if (c->images[i]) | |
2075 | fn (c->images[i]); | |
2076 | } | |
2077 | } | |
2078 | } | |
2079 | ||
2080 | ||
2081 | \f | |
2082 | /*********************************************************************** | |
2083 | X / MAC / W32 support code | |
2084 | ***********************************************************************/ | |
2085 | ||
2086 | #ifdef HAVE_NTGUI | |
2087 | ||
2088 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
09e8eb5b | 2089 | #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)() |
4ef0d4d0 KS |
2090 | |
2091 | /* Macro for loading those image functions from the library. */ | |
2092 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
2093 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
2094 | if (!fn_##func) return 0; \ | |
2095 | } | |
2096 | ||
0855eb52 JB |
2097 | /* Load a DLL implementing an image type. |
2098 | The `image-library-alist' variable associates a symbol, | |
2099 | identifying an image type, to a list of possible filenames. | |
2100 | The function returns NULL if no library could be loaded for | |
2101 | the given image type, or if the library was previously loaded; | |
2102 | else the handle of the DLL. */ | |
2103 | static HMODULE | |
2104 | w32_delayed_load (Lisp_Object libraries, Lisp_Object type) | |
2105 | { | |
2106 | HMODULE library = NULL; | |
2107 | ||
2108 | if (CONSP (libraries) && NILP (Fassq (type, Vimage_type_cache))) | |
2109 | { | |
2110 | Lisp_Object dlls = Fassq (type, libraries); | |
2111 | ||
2112 | if (CONSP (dlls)) | |
2113 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
2114 | { | |
2115 | CHECK_STRING_CAR (dlls); | |
2116 | if (library = LoadLibrary (SDATA (XCAR (dlls)))) | |
2117 | break; | |
2118 | } | |
2119 | } | |
2120 | ||
2121 | return library; | |
2122 | } | |
2123 | ||
4ef0d4d0 KS |
2124 | #endif /* HAVE_NTGUI */ |
2125 | ||
2126 | static int x_create_x_image_and_pixmap P_ ((struct frame *, int, int, int, | |
2127 | XImagePtr *, Pixmap *)); | |
2128 | static void x_destroy_x_image P_ ((XImagePtr)); | |
2129 | static void x_put_x_image P_ ((struct frame *, XImagePtr, Pixmap, int, int)); | |
2130 | ||
2131 | ||
2132 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
2133 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
2134 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
2135 | via xmalloc. Print error messages via image_error if an error | |
2136 | occurs. Value is non-zero if successful. | |
2137 | ||
2138 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
2139 | should indicate the bit depth of the image. */ | |
2140 | ||
2141 | static int | |
2142 | x_create_x_image_and_pixmap (f, width, height, depth, ximg, pixmap) | |
2143 | struct frame *f; | |
2144 | int width, height, depth; | |
2145 | XImagePtr *ximg; | |
2146 | Pixmap *pixmap; | |
2147 | { | |
2148 | #ifdef HAVE_X_WINDOWS | |
2149 | Display *display = FRAME_X_DISPLAY (f); | |
2150 | Window window = FRAME_X_WINDOW (f); | |
2151 | Screen *screen = FRAME_X_SCREEN (f); | |
2152 | ||
2153 | xassert (interrupt_input_blocked); | |
2154 | ||
2155 | if (depth <= 0) | |
2156 | depth = DefaultDepthOfScreen (screen); | |
2157 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
2158 | depth, ZPixmap, 0, NULL, width, height, | |
2159 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
2160 | if (*ximg == NULL) | |
2161 | { | |
2162 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
2163 | return 0; | |
2164 | } | |
2165 | ||
2166 | /* Allocate image raster. */ | |
2167 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
2168 | ||
2169 | /* Allocate a pixmap of the same size. */ | |
2170 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2171 | if (*pixmap == NO_PIXMAP) | |
2172 | { | |
2173 | x_destroy_x_image (*ximg); | |
2174 | *ximg = NULL; | |
2175 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2176 | return 0; | |
2177 | } | |
2178 | ||
2179 | return 1; | |
2180 | #endif /* HAVE_X_WINDOWS */ | |
2181 | ||
2182 | #ifdef HAVE_NTGUI | |
2183 | ||
2184 | BITMAPINFOHEADER *header; | |
2185 | HDC hdc; | |
2186 | int scanline_width_bits; | |
2187 | int remainder; | |
2188 | int palette_colors = 0; | |
2189 | ||
2190 | if (depth == 0) | |
2191 | depth = 24; | |
2192 | ||
2193 | if (depth != 1 && depth != 4 && depth != 8 | |
2194 | && depth != 16 && depth != 24 && depth != 32) | |
2195 | { | |
2196 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
2197 | return 0; | |
2198 | } | |
2199 | ||
2200 | scanline_width_bits = width * depth; | |
2201 | remainder = scanline_width_bits % 32; | |
2202 | ||
2203 | if (remainder) | |
2204 | scanline_width_bits += 32 - remainder; | |
2205 | ||
2206 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2207 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2208 | if (depth < 16) | |
2209 | palette_colors = 1 << depth - 1; | |
2210 | ||
2211 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
2212 | if (*ximg == NULL) | |
2213 | { | |
2214 | image_error ("Unable to allocate memory for XImage", Qnil, Qnil); | |
2215 | return 0; | |
2216 | } | |
2217 | ||
2218 | header = &((*ximg)->info.bmiHeader); | |
2219 | bzero (&((*ximg)->info), sizeof (BITMAPINFO)); | |
2220 | header->biSize = sizeof (*header); | |
2221 | header->biWidth = width; | |
2222 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2223 | header->biPlanes = 1; | |
2224 | header->biBitCount = depth; | |
2225 | header->biCompression = BI_RGB; | |
2226 | header->biClrUsed = palette_colors; | |
2227 | ||
2228 | /* TODO: fill in palette. */ | |
2229 | if (depth == 1) | |
2230 | { | |
2231 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2232 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2233 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2234 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2235 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2236 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2237 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2238 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2239 | } | |
2240 | ||
2241 | hdc = get_frame_dc (f); | |
2242 | ||
2243 | /* Create a DIBSection and raster array for the bitmap, | |
2244 | and store its handle in *pixmap. */ | |
2245 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2246 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2247 | /* casting avoids a GCC warning */ |
2248 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2249 | |
2250 | /* Realize display palette and garbage all frames. */ | |
2251 | release_frame_dc (f, hdc); | |
2252 | ||
2253 | if (*pixmap == NULL) | |
2254 | { | |
2255 | DWORD err = GetLastError(); | |
2256 | Lisp_Object errcode; | |
2257 | /* All system errors are < 10000, so the following is safe. */ | |
2258 | XSETINT (errcode, (int) err); | |
2259 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); | |
2260 | x_destroy_x_image (*ximg); | |
2261 | return 0; | |
2262 | } | |
2263 | ||
2264 | return 1; | |
2265 | ||
2266 | #endif /* HAVE_NTGUI */ | |
2267 | ||
2268 | #ifdef MAC_OS | |
2269 | Display *display = FRAME_X_DISPLAY (f); | |
2270 | Window window = FRAME_X_WINDOW (f); | |
2271 | ||
2272 | xassert (interrupt_input_blocked); | |
2273 | ||
2274 | /* Allocate a pixmap of the same size. */ | |
2275 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2276 | if (*pixmap == NO_PIXMAP) | |
2277 | { | |
4ef0d4d0 KS |
2278 | *ximg = NULL; |
2279 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2280 | return 0; | |
2281 | } | |
2282 | ||
2283 | LockPixels (GetGWorldPixMap (*pixmap)); | |
2284 | *ximg = *pixmap; | |
2285 | return 1; | |
2286 | ||
2287 | #endif /* MAC_OS */ | |
2288 | } | |
2289 | ||
2290 | ||
2291 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2292 | ||
2293 | static void | |
2294 | x_destroy_x_image (ximg) | |
2295 | XImagePtr ximg; | |
2296 | { | |
2297 | xassert (interrupt_input_blocked); | |
2298 | if (ximg) | |
2299 | { | |
2300 | #ifdef HAVE_X_WINDOWS | |
2301 | xfree (ximg->data); | |
2302 | ximg->data = NULL; | |
2303 | XDestroyImage (ximg); | |
2304 | #endif /* HAVE_X_WINDOWS */ | |
2305 | #ifdef HAVE_NTGUI | |
2306 | /* Data will be freed by DestroyObject. */ | |
2307 | ximg->data = NULL; | |
2308 | xfree (ximg); | |
2309 | #endif /* HAVE_NTGUI */ | |
2310 | #ifdef MAC_OS | |
2311 | XDestroyImage (ximg); | |
2312 | #endif /* MAC_OS */ | |
2313 | } | |
2314 | } | |
2315 | ||
2316 | ||
2317 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2318 | are width and height of both the image and pixmap. */ | |
2319 | ||
2320 | static void | |
2321 | x_put_x_image (f, ximg, pixmap, width, height) | |
2322 | struct frame *f; | |
2323 | XImagePtr ximg; | |
2324 | Pixmap pixmap; | |
2325 | int width, height; | |
2326 | { | |
2327 | #ifdef HAVE_X_WINDOWS | |
2328 | GC gc; | |
2329 | ||
2330 | xassert (interrupt_input_blocked); | |
2331 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2332 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2333 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2334 | #endif /* HAVE_X_WINDOWS */ | |
2335 | ||
2336 | #ifdef HAVE_NTGUI | |
2337 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2338 | HDC hdc = get_frame_dc (f); | |
2339 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2340 | release_frame_dc (f, hdc); | |
2341 | #endif | |
2342 | #endif /* HAVE_NTGUI */ | |
2343 | ||
2344 | #ifdef MAC_OS | |
2345 | xassert (ximg == pixmap); | |
2346 | #endif /* MAC_OS */ | |
2347 | } | |
2348 | ||
2349 | \f | |
2350 | /*********************************************************************** | |
2351 | File Handling | |
2352 | ***********************************************************************/ | |
2353 | ||
4ef0d4d0 KS |
2354 | static unsigned char *slurp_file P_ ((char *, int *)); |
2355 | ||
2356 | ||
6678dc11 | 2357 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2358 | x-bitmap-file-path. Value is the encoded full name of the file |
2359 | found, or nil if not found. */ | |
4ef0d4d0 | 2360 | |
c640aa9b | 2361 | Lisp_Object |
4ef0d4d0 KS |
2362 | x_find_image_file (file) |
2363 | Lisp_Object file; | |
2364 | { | |
2365 | Lisp_Object file_found, search_path; | |
2366 | struct gcpro gcpro1, gcpro2; | |
2367 | int fd; | |
2368 | ||
2369 | file_found = Qnil; | |
6678dc11 GM |
2370 | /* TODO I think this should use something like image-load-path |
2371 | instead. Unfortunately, that can contain non-string elements. */ | |
2372 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2373 | Vdata_directory), | |
2374 | Vx_bitmap_file_path); | |
4ef0d4d0 KS |
2375 | GCPRO2 (file_found, search_path); |
2376 | ||
2377 | /* Try to find FILE in data-directory, then x-bitmap-file-path. */ | |
2378 | fd = openp (search_path, file, Qnil, &file_found, Qnil); | |
2379 | ||
2380 | if (fd == -1) | |
2381 | file_found = Qnil; | |
2382 | else | |
022af124 KH |
2383 | { |
2384 | file_found = ENCODE_FILE (file_found); | |
2385 | close (fd); | |
2386 | } | |
4ef0d4d0 KS |
2387 | |
2388 | UNGCPRO; | |
2389 | return file_found; | |
2390 | } | |
2391 | ||
2392 | ||
2393 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2394 | with xmalloc holding FILE's contents. Value is null if an error | |
2395 | occurred. *SIZE is set to the size of the file. */ | |
2396 | ||
2397 | static unsigned char * | |
2398 | slurp_file (file, size) | |
2399 | char *file; | |
2400 | int *size; | |
2401 | { | |
2402 | FILE *fp = NULL; | |
2403 | unsigned char *buf = NULL; | |
2404 | struct stat st; | |
2405 | ||
2406 | if (stat (file, &st) == 0 | |
2407 | && (fp = fopen (file, "rb")) != NULL | |
fa8459a3 | 2408 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2409 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2410 | { | |
2411 | *size = st.st_size; | |
2412 | fclose (fp); | |
2413 | } | |
2414 | else | |
2415 | { | |
2416 | if (fp) | |
2417 | fclose (fp); | |
2418 | if (buf) | |
2419 | { | |
2420 | xfree (buf); | |
2421 | buf = NULL; | |
2422 | } | |
2423 | } | |
2424 | ||
2425 | return buf; | |
2426 | } | |
2427 | ||
2428 | ||
2429 | \f | |
2430 | #ifdef MAC_OS | |
2431 | ||
2432 | /*********************************************************************** | |
2433 | MAC Image Load Functions | |
2434 | ***********************************************************************/ | |
2435 | ||
2436 | static int image_load_quicktime P_ ((struct frame *, struct image *img, | |
2437 | OSType)); | |
2438 | #ifdef MAC_OSX | |
2439 | static int image_load_quartz2d P_ ((struct frame *, struct image *img, int)); | |
2440 | #endif | |
2441 | ||
2442 | static OSErr | |
2443 | find_image_fsspec (specified_file, file, fss) | |
2444 | Lisp_Object specified_file, *file; | |
2445 | FSSpec *fss; | |
2446 | { | |
4ef0d4d0 | 2447 | OSErr err; |
2d22e7ed | 2448 | AEDesc desc; |
4ef0d4d0 KS |
2449 | |
2450 | *file = x_find_image_file (specified_file); | |
2451 | if (!STRINGP (*file)) | |
2452 | return fnfErr; /* file or directory not found; | |
2453 | incomplete pathname */ | |
2454 | /* Try to open the image file. */ | |
2d22e7ed YM |
2455 | err = AECoercePtr (TYPE_FILE_NAME, SDATA (*file), |
2456 | SBYTES (*file), typeFSS, &desc); | |
4ef0d4d0 | 2457 | if (err == noErr) |
2d22e7ed YM |
2458 | { |
2459 | #if TARGET_API_MAC_CARBON | |
2460 | err = AEGetDescData (&desc, fss, sizeof (FSSpec)); | |
4ef0d4d0 | 2461 | #else |
2d22e7ed | 2462 | *fss = *(FSSpec *)(*(desc.dataHandle)); |
4ef0d4d0 | 2463 | #endif |
2d22e7ed YM |
2464 | AEDisposeDesc (&desc); |
2465 | } | |
4ef0d4d0 KS |
2466 | return err; |
2467 | } | |
2468 | ||
2469 | static int | |
2470 | image_load_qt_1 (f, img, type, fss, dh) | |
2471 | struct frame *f; | |
2472 | struct image *img; | |
2473 | OSType type; | |
46accb8f | 2474 | const FSSpec *fss; |
4ef0d4d0 KS |
2475 | Handle dh; |
2476 | { | |
edc52b3f | 2477 | ComponentResult err; |
4ef0d4d0 KS |
2478 | GraphicsImportComponent gi; |
2479 | Rect rect; | |
2480 | int width, height; | |
de297941 | 2481 | ImageDescriptionHandle desc_handle; |
4ef0d4d0 KS |
2482 | short draw_all_pixels; |
2483 | Lisp_Object specified_bg; | |
2484 | XColor color; | |
2485 | XImagePtr ximg; | |
2486 | RGBColor bg_color; | |
2487 | ||
46accb8f | 2488 | err = OpenADefaultComponent (GraphicsImporterComponentType, type, &gi); |
4ef0d4d0 KS |
2489 | if (err != noErr) |
2490 | { | |
2491 | image_error ("Cannot get importer component for `%s'", img->spec, Qnil); | |
2492 | return 0; | |
2493 | } | |
2494 | if (dh == NULL) | |
2495 | { | |
2496 | /* read from file system spec */ | |
2497 | err = GraphicsImportSetDataFile (gi, fss); | |
2498 | if (err != noErr) | |
2499 | { | |
2500 | image_error ("Cannot set fsspec to graphics importer for '%s'", | |
2501 | img->spec, Qnil); | |
2502 | goto error; | |
2503 | } | |
2504 | } | |
2505 | else | |
2506 | { | |
2507 | /* read from data handle */ | |
2508 | err = GraphicsImportSetDataHandle (gi, dh); | |
2509 | if (err != noErr) | |
2510 | { | |
2511 | image_error ("Cannot set data handle to graphics importer for `%s'", | |
2512 | img->spec, Qnil); | |
2513 | goto error; | |
2514 | } | |
2515 | } | |
de297941 YM |
2516 | err = GraphicsImportGetImageDescription (gi, &desc_handle); |
2517 | if (err != noErr || desc_handle == NULL) | |
4ef0d4d0 KS |
2518 | { |
2519 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2520 | goto error; | |
2521 | } | |
de297941 YM |
2522 | width = img->width = (*desc_handle)->width; |
2523 | height = img->height = (*desc_handle)->height; | |
2524 | DisposeHandle ((Handle)desc_handle); | |
2525 | ||
2526 | if (!check_image_size (f, width, height)) | |
2527 | { | |
2528 | image_error ("Invalid image size", Qnil, Qnil); | |
2529 | goto error; | |
2530 | } | |
2531 | ||
4ef0d4d0 KS |
2532 | err = GraphicsImportDoesDrawAllPixels (gi, &draw_all_pixels); |
2533 | #if 0 | |
2534 | /* Don't check the error code here. It may have an undocumented | |
2535 | value -32766. */ | |
2536 | if (err != noErr) | |
2537 | { | |
2538 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2539 | goto error; | |
2540 | } | |
2541 | #endif | |
2542 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2543 | { | |
2544 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2545 | if (!STRINGP (specified_bg) || | |
2546 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2547 | { | |
2548 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2549 | color.red = RED16_FROM_ULONG (color.pixel); | |
2550 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2551 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2552 | } | |
2553 | } | |
2554 | ||
2555 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
2556 | goto error; | |
2557 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2558 | { | |
2a316a84 ST |
2559 | CGrafPtr old_port; |
2560 | GDHandle old_gdh; | |
2561 | ||
2562 | GetGWorld (&old_port, &old_gdh); | |
4ef0d4d0 KS |
2563 | SetGWorld (ximg, NULL); |
2564 | bg_color.red = color.red; | |
2565 | bg_color.green = color.green; | |
2566 | bg_color.blue = color.blue; | |
2567 | RGBBackColor (&bg_color); | |
2568 | #if TARGET_API_MAC_CARBON | |
2569 | GetPortBounds (ximg, &rect); | |
2570 | EraseRect (&rect); | |
2571 | #else | |
2572 | EraseRect (&(ximg->portRect)); | |
2573 | #endif | |
2a316a84 | 2574 | SetGWorld (old_port, old_gdh); |
4ef0d4d0 KS |
2575 | } |
2576 | GraphicsImportSetGWorld (gi, ximg, NULL); | |
2577 | GraphicsImportDraw (gi); | |
2578 | CloseComponent (gi); | |
2579 | ||
2580 | /* Maybe fill in the background field while we have ximg handy. */ | |
2581 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2582 | IMAGE_BACKGROUND (img, f, ximg); | |
2583 | ||
2584 | /* Put the image into the pixmap. */ | |
2585 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2586 | x_destroy_x_image (ximg); | |
2587 | return 1; | |
2588 | ||
2589 | error: | |
2590 | CloseComponent (gi); | |
2591 | return 0; | |
2592 | } | |
2593 | ||
2594 | ||
2595 | /* Load an image using the QuickTime Graphics Importer. | |
2596 | Note: The alpha channel does not work for PNG images. */ | |
2597 | static int | |
2598 | image_load_quicktime (f, img, type) | |
2599 | struct frame *f; | |
2600 | struct image *img; | |
2601 | OSType type; | |
2602 | { | |
2603 | Lisp_Object specified_file; | |
2604 | Lisp_Object specified_data; | |
2605 | OSErr err; | |
2606 | ||
2607 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2608 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2609 | ||
2610 | if (NILP (specified_data)) | |
2611 | { | |
2612 | /* Read from a file */ | |
2613 | Lisp_Object file; | |
2614 | FSSpec fss; | |
2615 | ||
2616 | err = find_image_fsspec (specified_file, &file, &fss); | |
2617 | if (err != noErr) | |
2618 | { | |
2619 | if (err == fnfErr) | |
2620 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2621 | else | |
2622 | image_error ("Cannot open `%s'", file, Qnil); | |
2623 | return 0; | |
2624 | } | |
2625 | return image_load_qt_1 (f, img, type, &fss, NULL); | |
2626 | } | |
2627 | else | |
2628 | { | |
2629 | /* Memory source! */ | |
2630 | int success_p; | |
2631 | Handle dh; | |
2632 | ||
2633 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
2634 | if (err != noErr) | |
2635 | { | |
2636 | image_error ("Cannot allocate data handle for `%s'", | |
2637 | img->spec, Qnil); | |
2638 | return 0; | |
2639 | } | |
2640 | success_p = image_load_qt_1 (f, img, type, NULL, dh); | |
2641 | DisposeHandle (dh); | |
2642 | return success_p; | |
2643 | } | |
2644 | } | |
2645 | ||
2646 | ||
2647 | #ifdef MAC_OSX | |
2648 | /* Load a PNG/JPEG image using Quartz 2D decoding routines. | |
2649 | CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2. | |
2650 | So don't use this function directly but determine at runtime | |
2651 | whether it exists. */ | |
2652 | typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType) | |
2653 | (CGDataProviderRef, const float [], bool, CGColorRenderingIntent); | |
2654 | static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider; | |
2655 | ||
2656 | ||
2657 | static void | |
2658 | init_image_func_pointer () | |
2659 | { | |
2660 | if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider")) | |
2661 | { | |
2662 | MyCGImageCreateWithPNGDataProvider | |
2663 | = (CGImageCreateWithPNGDataProviderProcType) | |
2664 | NSAddressOfSymbol (NSLookupAndBindSymbol | |
2665 | ("_CGImageCreateWithPNGDataProvider")); | |
2666 | } | |
2667 | else | |
2668 | MyCGImageCreateWithPNGDataProvider = NULL; | |
2669 | } | |
2670 | ||
2671 | ||
2672 | static int | |
2673 | image_load_quartz2d (f, img, png_p) | |
2674 | struct frame *f; | |
2675 | struct image *img; | |
2676 | int png_p; | |
2677 | { | |
2678 | Lisp_Object file, specified_file; | |
2679 | Lisp_Object specified_data, specified_bg; | |
2680 | struct gcpro gcpro1; | |
2681 | CGDataProviderRef source; | |
2682 | CGImageRef image; | |
2683 | int width, height; | |
2684 | XColor color; | |
2685 | XImagePtr ximg = NULL; | |
2686 | CGContextRef context; | |
2687 | CGRect rectangle; | |
2688 | ||
2689 | /* Open the file. */ | |
2690 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2691 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2692 | ||
2693 | file = Qnil; | |
2694 | GCPRO1 (file); | |
2695 | ||
2696 | if (NILP (specified_data)) | |
2697 | { | |
2698 | CFStringRef path; | |
2699 | CFURLRef url; | |
2700 | ||
2701 | file = x_find_image_file (specified_file); | |
2702 | if (!STRINGP (file)) | |
2703 | { | |
2704 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2705 | UNGCPRO; | |
2706 | return 0; | |
2707 | } | |
fb8b2fc3 | 2708 | path = cfstring_create_with_utf8_cstring (SDATA (file)); |
4ef0d4d0 KS |
2709 | url = CFURLCreateWithFileSystemPath (NULL, path, |
2710 | kCFURLPOSIXPathStyle, 0); | |
2711 | CFRelease (path); | |
2712 | source = CGDataProviderCreateWithURL (url); | |
2713 | CFRelease (url); | |
2714 | } | |
2715 | else | |
2716 | source = CGDataProviderCreateWithData (NULL, SDATA (specified_data), | |
2717 | SBYTES (specified_data), NULL); | |
2718 | ||
2719 | if (png_p) | |
2720 | image = (*MyCGImageCreateWithPNGDataProvider) (source, NULL, FALSE, | |
2721 | kCGRenderingIntentDefault); | |
2722 | else | |
2723 | image = CGImageCreateWithJPEGDataProvider (source, NULL, FALSE, | |
2724 | kCGRenderingIntentDefault); | |
2725 | ||
2726 | CGDataProviderRelease (source); | |
2727 | if (image == NULL) | |
2728 | { | |
2729 | UNGCPRO; | |
2730 | image_error ("Error reading image `%s'", img->spec, Qnil); | |
2731 | return 0; | |
2732 | } | |
de297941 YM |
2733 | width = img->width = CGImageGetWidth (image); |
2734 | height = img->height = CGImageGetHeight (image); | |
2735 | ||
2736 | if (!check_image_size (f, width, height)) | |
2737 | { | |
54eaa188 | 2738 | CGImageRelease (image); |
de297941 YM |
2739 | UNGCPRO; |
2740 | image_error ("Invalid image size", Qnil, Qnil); | |
2741 | return 0; | |
2742 | } | |
4ef0d4d0 KS |
2743 | |
2744 | if (png_p) | |
2745 | { | |
2746 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2747 | if (!STRINGP (specified_bg) || | |
2748 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2749 | { | |
2750 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2751 | color.red = RED16_FROM_ULONG (color.pixel); | |
2752 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2753 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2754 | } | |
2755 | } | |
de297941 | 2756 | |
4ef0d4d0 KS |
2757 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
2758 | { | |
2759 | CGImageRelease (image); | |
2760 | UNGCPRO; | |
2761 | return 0; | |
2762 | } | |
2763 | rectangle = CGRectMake (0, 0, width, height); | |
2764 | QDBeginCGContext (ximg, &context); | |
2765 | if (png_p) | |
2766 | { | |
2767 | CGContextSetRGBFillColor (context, color.red / 65535.0, | |
2768 | color.green / 65535.0, | |
2769 | color.blue / 65535.0, 1.0); | |
2770 | CGContextFillRect (context, rectangle); | |
2771 | } | |
2772 | CGContextDrawImage (context, rectangle, image); | |
2773 | QDEndCGContext (ximg, &context); | |
2774 | CGImageRelease (image); | |
2775 | ||
2776 | /* Maybe fill in the background field while we have ximg handy. */ | |
2777 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2778 | IMAGE_BACKGROUND (img, f, ximg); | |
2779 | ||
2780 | /* Put the image into the pixmap. */ | |
2781 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2782 | x_destroy_x_image (ximg); | |
2783 | UNGCPRO; | |
2784 | return 1; | |
2785 | } | |
2786 | #endif | |
2787 | ||
2788 | #endif /* MAC_OS */ | |
2789 | ||
2790 | \f | |
2791 | /*********************************************************************** | |
2792 | XBM images | |
2793 | ***********************************************************************/ | |
2794 | ||
2795 | static int xbm_scan P_ ((unsigned char **, unsigned char *, char *, int *)); | |
2796 | static int xbm_load P_ ((struct frame *f, struct image *img)); | |
2797 | static int xbm_load_image P_ ((struct frame *f, struct image *img, | |
2798 | unsigned char *, unsigned char *)); | |
2799 | static int xbm_image_p P_ ((Lisp_Object object)); | |
f1f25b99 CY |
2800 | static int xbm_read_bitmap_data P_ ((struct frame *f, |
2801 | unsigned char *, unsigned char *, | |
4ef0d4d0 KS |
2802 | int *, int *, unsigned char **)); |
2803 | static int xbm_file_p P_ ((Lisp_Object)); | |
2804 | ||
2805 | ||
2806 | /* Indices of image specification fields in xbm_format, below. */ | |
2807 | ||
2808 | enum xbm_keyword_index | |
2809 | { | |
2810 | XBM_TYPE, | |
2811 | XBM_FILE, | |
2812 | XBM_WIDTH, | |
2813 | XBM_HEIGHT, | |
2814 | XBM_DATA, | |
2815 | XBM_FOREGROUND, | |
2816 | XBM_BACKGROUND, | |
2817 | XBM_ASCENT, | |
2818 | XBM_MARGIN, | |
2819 | XBM_RELIEF, | |
2820 | XBM_ALGORITHM, | |
2821 | XBM_HEURISTIC_MASK, | |
2822 | XBM_MASK, | |
2823 | XBM_LAST | |
2824 | }; | |
2825 | ||
2826 | /* Vector of image_keyword structures describing the format | |
2827 | of valid XBM image specifications. */ | |
2828 | ||
2829 | static struct image_keyword xbm_format[XBM_LAST] = | |
2830 | { | |
2831 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2832 | {":file", IMAGE_STRING_VALUE, 0}, | |
2833 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2834 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2835 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2836 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2837 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2838 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
2839 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
2840 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
2841 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2842 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2843 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2844 | }; | |
2845 | ||
2846 | /* Structure describing the image type XBM. */ | |
2847 | ||
2848 | static struct image_type xbm_type = | |
2849 | { | |
2850 | &Qxbm, | |
2851 | xbm_image_p, | |
2852 | xbm_load, | |
2853 | x_clear_image, | |
2854 | NULL | |
2855 | }; | |
2856 | ||
2857 | /* Tokens returned from xbm_scan. */ | |
2858 | ||
2859 | enum xbm_token | |
2860 | { | |
2861 | XBM_TK_IDENT = 256, | |
2862 | XBM_TK_NUMBER | |
2863 | }; | |
2864 | ||
2865 | ||
2866 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2867 | A valid specification is a list starting with the symbol `image' | |
2868 | The rest of the list is a property list which must contain an | |
2869 | entry `:type xbm.. | |
2870 | ||
2871 | If the specification specifies a file to load, it must contain | |
2872 | an entry `:file FILENAME' where FILENAME is a string. | |
2873 | ||
2874 | If the specification is for a bitmap loaded from memory it must | |
2875 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2876 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2877 | ||
2878 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2879 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2880 | ||
2881 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2882 | ||
2883 | 3. a vector of strings or bool-vectors, one for each line of the | |
2884 | bitmap. | |
2885 | ||
2886 | 4. A string containing an in-memory XBM file. WIDTH and HEIGHT | |
2887 | may not be specified in this case because they are defined in the | |
2888 | XBM file. | |
2889 | ||
2890 | Both the file and data forms may contain the additional entries | |
2891 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2892 | foreground and background of the frame on which the image is | |
2893 | displayed is used. */ | |
2894 | ||
2895 | static int | |
2896 | xbm_image_p (object) | |
2897 | Lisp_Object object; | |
2898 | { | |
2899 | struct image_keyword kw[XBM_LAST]; | |
2900 | ||
2901 | bcopy (xbm_format, kw, sizeof kw); | |
2902 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) | |
2903 | return 0; | |
2904 | ||
2905 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2906 | ||
2907 | if (kw[XBM_FILE].count) | |
2908 | { | |
2909 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2910 | return 0; | |
2911 | } | |
2912 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2913 | { | |
2914 | /* In-memory XBM file. */ | |
2915 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2916 | return 0; | |
2917 | } | |
2918 | else | |
2919 | { | |
2920 | Lisp_Object data; | |
2921 | int width, height; | |
2922 | ||
2923 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2924 | if (!kw[XBM_WIDTH].count | |
2925 | || !kw[XBM_HEIGHT].count | |
2926 | || !kw[XBM_DATA].count) | |
2927 | return 0; | |
2928 | ||
2929 | data = kw[XBM_DATA].value; | |
2930 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2931 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2932 | ||
2933 | /* Check type of data, and width and height against contents of | |
2934 | data. */ | |
2935 | if (VECTORP (data)) | |
2936 | { | |
2937 | int i; | |
2938 | ||
2939 | /* Number of elements of the vector must be >= height. */ | |
2940 | if (XVECTOR (data)->size < height) | |
2941 | return 0; | |
2942 | ||
2943 | /* Each string or bool-vector in data must be large enough | |
2944 | for one line of the image. */ | |
2945 | for (i = 0; i < height; ++i) | |
2946 | { | |
2947 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2948 | ||
2949 | if (STRINGP (elt)) | |
2950 | { | |
2951 | if (SCHARS (elt) | |
2952 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2953 | return 0; | |
2954 | } | |
2955 | else if (BOOL_VECTOR_P (elt)) | |
2956 | { | |
2957 | if (XBOOL_VECTOR (elt)->size < width) | |
2958 | return 0; | |
2959 | } | |
2960 | else | |
2961 | return 0; | |
2962 | } | |
2963 | } | |
2964 | else if (STRINGP (data)) | |
2965 | { | |
2966 | if (SCHARS (data) | |
2967 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2968 | return 0; | |
2969 | } | |
2970 | else if (BOOL_VECTOR_P (data)) | |
2971 | { | |
2972 | if (XBOOL_VECTOR (data)->size < width * height) | |
2973 | return 0; | |
2974 | } | |
2975 | else | |
2976 | return 0; | |
2977 | } | |
2978 | ||
2979 | return 1; | |
2980 | } | |
2981 | ||
2982 | ||
2983 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2984 | either an enumerator from enum xbm_token, or a character for a | |
2985 | single-character token, or 0 at end of file. If scanning an | |
2986 | identifier, store the lexeme of the identifier in SVAL. If | |
2987 | scanning a number, store its value in *IVAL. */ | |
2988 | ||
2989 | static int | |
2990 | xbm_scan (s, end, sval, ival) | |
2991 | unsigned char **s, *end; | |
2992 | char *sval; | |
2993 | int *ival; | |
2994 | { | |
2995 | unsigned int c; | |
2996 | ||
2997 | loop: | |
2998 | ||
2999 | /* Skip white space. */ | |
3000 | while (*s < end && (c = *(*s)++, isspace (c))) | |
3001 | ; | |
3002 | ||
3003 | if (*s >= end) | |
3004 | c = 0; | |
3005 | else if (isdigit (c)) | |
3006 | { | |
3007 | int value = 0, digit; | |
3008 | ||
3009 | if (c == '0' && *s < end) | |
3010 | { | |
3011 | c = *(*s)++; | |
3012 | if (c == 'x' || c == 'X') | |
3013 | { | |
3014 | while (*s < end) | |
3015 | { | |
3016 | c = *(*s)++; | |
3017 | if (isdigit (c)) | |
3018 | digit = c - '0'; | |
3019 | else if (c >= 'a' && c <= 'f') | |
3020 | digit = c - 'a' + 10; | |
3021 | else if (c >= 'A' && c <= 'F') | |
3022 | digit = c - 'A' + 10; | |
3023 | else | |
3024 | break; | |
3025 | value = 16 * value + digit; | |
3026 | } | |
3027 | } | |
3028 | else if (isdigit (c)) | |
3029 | { | |
3030 | value = c - '0'; | |
3031 | while (*s < end | |
3032 | && (c = *(*s)++, isdigit (c))) | |
3033 | value = 8 * value + c - '0'; | |
3034 | } | |
3035 | } | |
3036 | else | |
3037 | { | |
3038 | value = c - '0'; | |
3039 | while (*s < end | |
3040 | && (c = *(*s)++, isdigit (c))) | |
3041 | value = 10 * value + c - '0'; | |
3042 | } | |
3043 | ||
3044 | if (*s < end) | |
3045 | *s = *s - 1; | |
3046 | *ival = value; | |
3047 | c = XBM_TK_NUMBER; | |
3048 | } | |
3049 | else if (isalpha (c) || c == '_') | |
3050 | { | |
3051 | *sval++ = c; | |
3052 | while (*s < end | |
3053 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
3054 | *sval++ = c; | |
3055 | *sval = 0; | |
3056 | if (*s < end) | |
3057 | *s = *s - 1; | |
3058 | c = XBM_TK_IDENT; | |
3059 | } | |
3060 | else if (c == '/' && **s == '*') | |
3061 | { | |
3062 | /* C-style comment. */ | |
3063 | ++*s; | |
3064 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
3065 | ++*s; | |
3066 | if (**s) | |
3067 | { | |
3068 | *s += 2; | |
3069 | goto loop; | |
3070 | } | |
3071 | } | |
3072 | ||
3073 | return c; | |
3074 | } | |
3075 | ||
3076 | #ifdef HAVE_NTGUI | |
3077 | ||
3078 | /* Create a Windows bitmap from X bitmap data. */ | |
3079 | static HBITMAP | |
3080 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
3081 | { | |
3082 | static unsigned char swap_nibble[16] | |
3083 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
3084 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
3085 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
3086 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
3087 | int i, j, w1, w2; | |
3088 | unsigned char *bits, *p; | |
3089 | HBITMAP bmp; | |
3090 | ||
3091 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
3092 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
3093 | bits = (unsigned char *) alloca (height * w2); | |
3094 | bzero (bits, height * w2); | |
3095 | for (i = 0; i < height; i++) | |
3096 | { | |
3097 | p = bits + i*w2; | |
3098 | for (j = 0; j < w1; j++) | |
3099 | { | |
3100 | /* Bitswap XBM bytes to match how Windows does things. */ | |
3101 | unsigned char c = *data++; | |
3102 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
3103 | | (swap_nibble[(c>>4) & 0xf])); | |
3104 | } | |
3105 | } | |
3106 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
3107 | ||
3108 | return bmp; | |
3109 | } | |
3110 | ||
3111 | static void convert_mono_to_color_image (f, img, foreground, background) | |
3112 | struct frame *f; | |
3113 | struct image *img; | |
3114 | COLORREF foreground, background; | |
3115 | { | |
3116 | HDC hdc, old_img_dc, new_img_dc; | |
3117 | HGDIOBJ old_prev, new_prev; | |
3118 | HBITMAP new_pixmap; | |
3119 | ||
3120 | hdc = get_frame_dc (f); | |
3121 | old_img_dc = CreateCompatibleDC (hdc); | |
3122 | new_img_dc = CreateCompatibleDC (hdc); | |
3123 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
3124 | release_frame_dc (f, hdc); | |
3125 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
3126 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
2386b1f1 JR |
3127 | SetTextColor (new_img_dc, background); |
3128 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
3129 | |
3130 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
3131 | 0, 0, SRCCOPY); | |
3132 | ||
3133 | SelectObject (old_img_dc, old_prev); | |
3134 | SelectObject (new_img_dc, new_prev); | |
3135 | DeleteDC (old_img_dc); | |
3136 | DeleteDC (new_img_dc); | |
3137 | DeleteObject (img->pixmap); | |
3138 | if (new_pixmap == 0) | |
3139 | fprintf (stderr, "Failed to convert image to color.\n"); | |
3140 | else | |
3141 | img->pixmap = new_pixmap; | |
3142 | } | |
3143 | ||
3144 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
3145 | ||
3146 | #else | |
3147 | ||
3148 | #define XBM_BIT_SHUFFLE(b) (b) | |
3149 | ||
3150 | #endif /* HAVE_NTGUI */ | |
3151 | ||
3152 | ||
3153 | static void | |
3154 | Create_Pixmap_From_Bitmap_Data(f, img, data, fg, bg, non_default_colors) | |
3155 | struct frame *f; | |
3156 | struct image *img; | |
3157 | char *data; | |
3158 | RGB_PIXEL_COLOR fg, bg; | |
3159 | int non_default_colors; | |
3160 | { | |
3161 | #ifdef HAVE_NTGUI | |
3162 | img->pixmap | |
3163 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
3164 | ||
3165 | /* If colors were specified, transfer the bitmap to a color one. */ | |
3166 | if (non_default_colors) | |
3167 | convert_mono_to_color_image (f, img, fg, bg); | |
3168 | #else | |
3169 | img->pixmap | |
3170 | = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
3171 | FRAME_X_WINDOW (f), | |
3172 | data, | |
3173 | img->width, img->height, | |
3174 | fg, bg, | |
3175 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
3176 | #endif /* HAVE_NTGUI */ | |
3177 | } | |
3178 | ||
3179 | ||
3180 | ||
3181 | /* Replacement for XReadBitmapFileData which isn't available under old | |
3182 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
3183 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
3184 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
3185 | Value is non-zero if successful. DATA null means just test if | |
3186 | CONTENTS looks like an in-memory XBM file. */ | |
3187 | ||
3188 | static int | |
f1f25b99 CY |
3189 | xbm_read_bitmap_data (f, contents, end, width, height, data) |
3190 | struct frame *f; | |
4ef0d4d0 KS |
3191 | unsigned char *contents, *end; |
3192 | int *width, *height; | |
3193 | unsigned char **data; | |
3194 | { | |
3195 | unsigned char *s = contents; | |
3196 | char buffer[BUFSIZ]; | |
3197 | int padding_p = 0; | |
3198 | int v10 = 0; | |
3199 | int bytes_per_line, i, nbytes; | |
3200 | unsigned char *p; | |
3201 | int value; | |
3202 | int LA1; | |
3203 | ||
3204 | #define match() \ | |
3205 | LA1 = xbm_scan (&s, end, buffer, &value) | |
3206 | ||
3207 | #define expect(TOKEN) \ | |
3208 | if (LA1 != (TOKEN)) \ | |
3209 | goto failure; \ | |
3210 | else \ | |
3211 | match () | |
3212 | ||
3213 | #define expect_ident(IDENT) \ | |
3214 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
3215 | match (); \ | |
3216 | else \ | |
3217 | goto failure | |
3218 | ||
3219 | *width = *height = -1; | |
3220 | if (data) | |
3221 | *data = NULL; | |
3222 | LA1 = xbm_scan (&s, end, buffer, &value); | |
3223 | ||
3224 | /* Parse defines for width, height and hot-spots. */ | |
3225 | while (LA1 == '#') | |
3226 | { | |
3227 | match (); | |
3228 | expect_ident ("define"); | |
3229 | expect (XBM_TK_IDENT); | |
3230 | ||
431feaf6 | 3231 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 KS |
3232 | { |
3233 | char *p = strrchr (buffer, '_'); | |
3234 | p = p ? p + 1 : buffer; | |
3235 | if (strcmp (p, "width") == 0) | |
3236 | *width = value; | |
3237 | else if (strcmp (p, "height") == 0) | |
3238 | *height = value; | |
3239 | } | |
3240 | expect (XBM_TK_NUMBER); | |
3241 | } | |
3242 | ||
f1f25b99 | 3243 | if (!check_image_size (f, *width, *height)) |
4ef0d4d0 KS |
3244 | goto failure; |
3245 | else if (data == NULL) | |
3246 | goto success; | |
3247 | ||
3248 | /* Parse bits. Must start with `static'. */ | |
3249 | expect_ident ("static"); | |
3250 | if (LA1 == XBM_TK_IDENT) | |
3251 | { | |
3252 | if (strcmp (buffer, "unsigned") == 0) | |
3253 | { | |
3254 | match (); | |
3255 | expect_ident ("char"); | |
3256 | } | |
3257 | else if (strcmp (buffer, "short") == 0) | |
3258 | { | |
3259 | match (); | |
3260 | v10 = 1; | |
3261 | if (*width % 16 && *width % 16 < 9) | |
3262 | padding_p = 1; | |
3263 | } | |
3264 | else if (strcmp (buffer, "char") == 0) | |
3265 | match (); | |
3266 | else | |
3267 | goto failure; | |
3268 | } | |
3269 | else | |
3270 | goto failure; | |
3271 | ||
3272 | expect (XBM_TK_IDENT); | |
3273 | expect ('['); | |
3274 | expect (']'); | |
3275 | expect ('='); | |
3276 | expect ('{'); | |
3277 | ||
3278 | bytes_per_line = (*width + 7) / 8 + padding_p; | |
3279 | nbytes = bytes_per_line * *height; | |
fa8459a3 | 3280 | p = *data = (unsigned char *) xmalloc (nbytes); |
4ef0d4d0 KS |
3281 | |
3282 | if (v10) | |
3283 | { | |
3284 | for (i = 0; i < nbytes; i += 2) | |
3285 | { | |
3286 | int val = value; | |
3287 | expect (XBM_TK_NUMBER); | |
3288 | ||
3289 | *p++ = XBM_BIT_SHUFFLE (val); | |
3290 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
3291 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
3292 | ||
3293 | if (LA1 == ',' || LA1 == '}') | |
3294 | match (); | |
3295 | else | |
3296 | goto failure; | |
3297 | } | |
3298 | } | |
3299 | else | |
3300 | { | |
3301 | for (i = 0; i < nbytes; ++i) | |
3302 | { | |
3303 | int val = value; | |
3304 | expect (XBM_TK_NUMBER); | |
3305 | ||
3306 | *p++ = XBM_BIT_SHUFFLE (val); | |
3307 | ||
3308 | if (LA1 == ',' || LA1 == '}') | |
3309 | match (); | |
3310 | else | |
3311 | goto failure; | |
3312 | } | |
3313 | } | |
3314 | ||
3315 | success: | |
3316 | return 1; | |
3317 | ||
3318 | failure: | |
3319 | ||
3320 | if (data && *data) | |
3321 | { | |
3322 | xfree (*data); | |
3323 | *data = NULL; | |
3324 | } | |
3325 | return 0; | |
3326 | ||
3327 | #undef match | |
3328 | #undef expect | |
3329 | #undef expect_ident | |
3330 | } | |
3331 | ||
3332 | ||
3333 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
3334 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
3335 | successful. */ | |
3336 | ||
3337 | static int | |
3338 | xbm_load_image (f, img, contents, end) | |
3339 | struct frame *f; | |
3340 | struct image *img; | |
3341 | unsigned char *contents, *end; | |
3342 | { | |
3343 | int rc; | |
3344 | unsigned char *data; | |
3345 | int success_p = 0; | |
3346 | ||
f1f25b99 | 3347 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, &data); |
4ef0d4d0 KS |
3348 | if (rc) |
3349 | { | |
3350 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3351 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3352 | int non_default_colors = 0; | |
3353 | Lisp_Object value; | |
3354 | ||
3355 | xassert (img->width > 0 && img->height > 0); | |
3356 | ||
3357 | /* Get foreground and background colors, maybe allocate colors. */ | |
3358 | value = image_spec_value (img->spec, QCforeground, NULL); | |
3359 | if (!NILP (value)) | |
3360 | { | |
3361 | foreground = x_alloc_image_color (f, img, value, foreground); | |
3362 | non_default_colors = 1; | |
3363 | } | |
3364 | value = image_spec_value (img->spec, QCbackground, NULL); | |
3365 | if (!NILP (value)) | |
3366 | { | |
3367 | background = x_alloc_image_color (f, img, value, background); | |
3368 | img->background = background; | |
3369 | img->background_valid = 1; | |
3370 | non_default_colors = 1; | |
3371 | } | |
3372 | ||
1f026899 | 3373 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
3374 | foreground, background, |
3375 | non_default_colors); | |
3376 | xfree (data); | |
3377 | ||
3378 | if (img->pixmap == NO_PIXMAP) | |
3379 | { | |
3380 | x_clear_image (f, img); | |
3381 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
3382 | } | |
3383 | else | |
3384 | success_p = 1; | |
3385 | } | |
3386 | else | |
3387 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3388 | ||
3389 | return success_p; | |
3390 | } | |
3391 | ||
3392 | ||
3393 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
3394 | ||
3395 | static int | |
3396 | xbm_file_p (data) | |
3397 | Lisp_Object data; | |
3398 | { | |
3399 | int w, h; | |
3400 | return (STRINGP (data) | |
f1f25b99 | 3401 | && xbm_read_bitmap_data (NULL, SDATA (data), |
4ef0d4d0 KS |
3402 | (SDATA (data) |
3403 | + SBYTES (data)), | |
3404 | &w, &h, NULL)); | |
3405 | } | |
3406 | ||
3407 | ||
3408 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
3409 | non-zero if successful. */ | |
3410 | ||
3411 | static int | |
3412 | xbm_load (f, img) | |
3413 | struct frame *f; | |
3414 | struct image *img; | |
3415 | { | |
3416 | int success_p = 0; | |
3417 | Lisp_Object file_name; | |
3418 | ||
3419 | xassert (xbm_image_p (img->spec)); | |
3420 | ||
3421 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
3422 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
3423 | if (STRINGP (file_name)) | |
3424 | { | |
3425 | Lisp_Object file; | |
3426 | unsigned char *contents; | |
3427 | int size; | |
3428 | struct gcpro gcpro1; | |
3429 | ||
3430 | file = x_find_image_file (file_name); | |
3431 | GCPRO1 (file); | |
3432 | if (!STRINGP (file)) | |
3433 | { | |
3434 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
3435 | UNGCPRO; | |
3436 | return 0; | |
3437 | } | |
3438 | ||
3439 | contents = slurp_file (SDATA (file), &size); | |
3440 | if (contents == NULL) | |
3441 | { | |
3442 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3443 | UNGCPRO; | |
3444 | return 0; | |
3445 | } | |
3446 | ||
3447 | success_p = xbm_load_image (f, img, contents, contents + size); | |
3448 | UNGCPRO; | |
3449 | } | |
3450 | else | |
3451 | { | |
3452 | struct image_keyword fmt[XBM_LAST]; | |
3453 | Lisp_Object data; | |
3454 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3455 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3456 | int non_default_colors = 0; | |
3457 | char *bits; | |
3458 | int parsed_p; | |
3459 | int in_memory_file_p = 0; | |
3460 | ||
3461 | /* See if data looks like an in-memory XBM file. */ | |
3462 | data = image_spec_value (img->spec, QCdata, NULL); | |
3463 | in_memory_file_p = xbm_file_p (data); | |
3464 | ||
3465 | /* Parse the image specification. */ | |
3466 | bcopy (xbm_format, fmt, sizeof fmt); | |
3467 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); | |
3468 | xassert (parsed_p); | |
3469 | ||
3470 | /* Get specified width, and height. */ | |
3471 | if (!in_memory_file_p) | |
3472 | { | |
3473 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
3474 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
3475 | xassert (img->width > 0 && img->height > 0); | |
3476 | } | |
3477 | ||
3478 | /* Get foreground and background colors, maybe allocate colors. */ | |
3479 | if (fmt[XBM_FOREGROUND].count | |
3480 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
3481 | { | |
3482 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
3483 | foreground); | |
3484 | non_default_colors = 1; | |
3485 | } | |
3486 | ||
3487 | if (fmt[XBM_BACKGROUND].count | |
3488 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
3489 | { | |
3490 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
3491 | background); | |
3492 | non_default_colors = 1; | |
3493 | } | |
3494 | ||
3495 | if (in_memory_file_p) | |
3496 | success_p = xbm_load_image (f, img, SDATA (data), | |
3497 | (SDATA (data) | |
3498 | + SBYTES (data))); | |
3499 | else | |
3500 | { | |
3501 | if (VECTORP (data)) | |
3502 | { | |
3503 | int i; | |
3504 | char *p; | |
3505 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
3506 | ||
3507 | p = bits = (char *) alloca (nbytes * img->height); | |
3508 | for (i = 0; i < img->height; ++i, p += nbytes) | |
3509 | { | |
3510 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
3511 | if (STRINGP (line)) | |
3512 | bcopy (SDATA (line), p, nbytes); | |
3513 | else | |
3514 | bcopy (XBOOL_VECTOR (line)->data, p, nbytes); | |
3515 | } | |
3516 | } | |
3517 | else if (STRINGP (data)) | |
3518 | bits = SDATA (data); | |
3519 | else | |
3520 | bits = XBOOL_VECTOR (data)->data; | |
3521 | ||
3522 | /* Create the pixmap. */ | |
3523 | ||
3524 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
3525 | foreground, background, | |
3526 | non_default_colors); | |
3527 | if (img->pixmap) | |
3528 | success_p = 1; | |
3529 | else | |
3530 | { | |
3531 | image_error ("Unable to create pixmap for XBM image `%s'", | |
3532 | img->spec, Qnil); | |
3533 | x_clear_image (f, img); | |
3534 | } | |
3535 | } | |
3536 | } | |
3537 | ||
3538 | return success_p; | |
3539 | } | |
3540 | ||
3541 | ||
3542 | \f | |
3543 | /*********************************************************************** | |
3544 | XPM images | |
3545 | ***********************************************************************/ | |
3546 | ||
ea1aaa6f | 3547 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3548 | |
3549 | static int xpm_image_p P_ ((Lisp_Object object)); | |
3550 | static int xpm_load P_ ((struct frame *f, struct image *img)); | |
3551 | static int xpm_valid_color_symbols_p P_ ((Lisp_Object)); | |
3552 | ||
ea1aaa6f ST |
3553 | #endif /* HAVE_XPM || MAC_OS */ |
3554 | ||
3555 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
3556 | #ifdef HAVE_NTGUI |
3557 | /* Indicate to xpm.h that we don't have Xlib. */ | |
3558 | #define FOR_MSW | |
3559 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 3560 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
3561 | #define XColor xpm_XColor |
3562 | #define XImage xpm_XImage | |
279d3293 | 3563 | #define Display xpm_Display |
4ef0d4d0 KS |
3564 | #define PIXEL_ALREADY_TYPEDEFED |
3565 | #include "X11/xpm.h" | |
3566 | #undef FOR_MSW | |
3567 | #undef XColor | |
3568 | #undef XImage | |
279d3293 | 3569 | #undef Display |
4ef0d4d0 KS |
3570 | #undef PIXEL_ALREADY_TYPEDEFED |
3571 | #else | |
3572 | #include "X11/xpm.h" | |
3573 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3574 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3575 | |
ea1aaa6f | 3576 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3577 | /* The symbol `xpm' identifying XPM-format images. */ |
3578 | ||
3579 | Lisp_Object Qxpm; | |
3580 | ||
3581 | /* Indices of image specification fields in xpm_format, below. */ | |
3582 | ||
3583 | enum xpm_keyword_index | |
3584 | { | |
3585 | XPM_TYPE, | |
3586 | XPM_FILE, | |
3587 | XPM_DATA, | |
3588 | XPM_ASCENT, | |
3589 | XPM_MARGIN, | |
3590 | XPM_RELIEF, | |
3591 | XPM_ALGORITHM, | |
3592 | XPM_HEURISTIC_MASK, | |
3593 | XPM_MASK, | |
3594 | XPM_COLOR_SYMBOLS, | |
3595 | XPM_BACKGROUND, | |
3596 | XPM_LAST | |
3597 | }; | |
3598 | ||
3599 | /* Vector of image_keyword structures describing the format | |
3600 | of valid XPM image specifications. */ | |
3601 | ||
3602 | static struct image_keyword xpm_format[XPM_LAST] = | |
3603 | { | |
3604 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3605 | {":file", IMAGE_STRING_VALUE, 0}, | |
3606 | {":data", IMAGE_STRING_VALUE, 0}, | |
3607 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
3608 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
3609 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
3610 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3611 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3612 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3613 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3614 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3615 | }; | |
3616 | ||
3617 | /* Structure describing the image type XPM. */ | |
3618 | ||
3619 | static struct image_type xpm_type = | |
3620 | { | |
3621 | &Qxpm, | |
3622 | xpm_image_p, | |
3623 | xpm_load, | |
3624 | x_clear_image, | |
3625 | NULL | |
3626 | }; | |
3627 | ||
3628 | #ifdef HAVE_X_WINDOWS | |
3629 | ||
3630 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3631 | functions for allocating image colors. Our own functions handle | |
3632 | color allocation failures more gracefully than the ones on the XPM | |
3633 | lib. */ | |
3634 | ||
3635 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3636 | #define ALLOC_XPM_COLORS | |
3637 | #endif | |
3638 | #endif /* HAVE_X_WINDOWS */ | |
3639 | ||
3640 | #ifdef ALLOC_XPM_COLORS | |
3641 | ||
3642 | static void xpm_init_color_cache P_ ((struct frame *, XpmAttributes *)); | |
3643 | static void xpm_free_color_cache P_ ((void)); | |
3644 | static int xpm_lookup_color P_ ((struct frame *, char *, XColor *)); | |
3645 | static int xpm_color_bucket P_ ((char *)); | |
3646 | static struct xpm_cached_color *xpm_cache_color P_ ((struct frame *, char *, | |
3647 | XColor *, int)); | |
3648 | ||
3649 | /* An entry in a hash table used to cache color definitions of named | |
3650 | colors. This cache is necessary to speed up XPM image loading in | |
3651 | case we do color allocations ourselves. Without it, we would need | |
3652 | a call to XParseColor per pixel in the image. */ | |
3653 | ||
3654 | struct xpm_cached_color | |
3655 | { | |
3656 | /* Next in collision chain. */ | |
3657 | struct xpm_cached_color *next; | |
3658 | ||
3659 | /* Color definition (RGB and pixel color). */ | |
3660 | XColor color; | |
3661 | ||
3662 | /* Color name. */ | |
3663 | char name[1]; | |
3664 | }; | |
3665 | ||
3666 | /* The hash table used for the color cache, and its bucket vector | |
3667 | size. */ | |
3668 | ||
3669 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
3670 | struct xpm_cached_color **xpm_color_cache; | |
3671 | ||
3672 | /* Initialize the color cache. */ | |
3673 | ||
3674 | static void | |
3675 | xpm_init_color_cache (f, attrs) | |
3676 | struct frame *f; | |
3677 | XpmAttributes *attrs; | |
3678 | { | |
3679 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3680 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3681 | memset (xpm_color_cache, 0, nbytes); | |
3682 | init_color_table (); | |
3683 | ||
3684 | if (attrs->valuemask & XpmColorSymbols) | |
3685 | { | |
3686 | int i; | |
3687 | XColor color; | |
3688 | ||
3689 | for (i = 0; i < attrs->numsymbols; ++i) | |
3690 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3691 | attrs->colorsymbols[i].value, &color)) | |
3692 | { | |
3693 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3694 | color.blue); | |
3695 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3696 | } | |
3697 | } | |
3698 | } | |
3699 | ||
3700 | /* Free the color cache. */ | |
3701 | ||
3702 | static void | |
3703 | xpm_free_color_cache () | |
3704 | { | |
3705 | struct xpm_cached_color *p, *next; | |
3706 | int i; | |
3707 | ||
3708 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3709 | for (p = xpm_color_cache[i]; p; p = next) | |
3710 | { | |
3711 | next = p->next; | |
3712 | xfree (p); | |
3713 | } | |
3714 | ||
3715 | xfree (xpm_color_cache); | |
3716 | xpm_color_cache = NULL; | |
3717 | free_color_table (); | |
3718 | } | |
3719 | ||
3720 | /* Return the bucket index for color named COLOR_NAME in the color | |
3721 | cache. */ | |
3722 | ||
3723 | static int | |
3724 | xpm_color_bucket (color_name) | |
3725 | char *color_name; | |
3726 | { | |
3727 | unsigned h = 0; | |
3728 | char *s; | |
3729 | ||
3730 | for (s = color_name; *s; ++s) | |
3731 | h = (h << 2) ^ *s; | |
3732 | return h %= XPM_COLOR_CACHE_BUCKETS; | |
3733 | } | |
3734 | ||
3735 | ||
3736 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3737 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3738 | entry added. */ | |
3739 | ||
3740 | static struct xpm_cached_color * | |
3741 | xpm_cache_color (f, color_name, color, bucket) | |
3742 | struct frame *f; | |
3743 | char *color_name; | |
3744 | XColor *color; | |
3745 | int bucket; | |
3746 | { | |
3747 | size_t nbytes; | |
3748 | struct xpm_cached_color *p; | |
3749 | ||
3750 | if (bucket < 0) | |
3751 | bucket = xpm_color_bucket (color_name); | |
3752 | ||
3753 | nbytes = sizeof *p + strlen (color_name); | |
3754 | p = (struct xpm_cached_color *) xmalloc (nbytes); | |
3755 | strcpy (p->name, color_name); | |
3756 | p->color = *color; | |
3757 | p->next = xpm_color_cache[bucket]; | |
3758 | xpm_color_cache[bucket] = p; | |
3759 | return p; | |
3760 | } | |
3761 | ||
3762 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3763 | return the cached definition in *COLOR. Otherwise, make a new | |
3764 | entry in the cache and allocate the color. Value is zero if color | |
3765 | allocation failed. */ | |
3766 | ||
3767 | static int | |
3768 | xpm_lookup_color (f, color_name, color) | |
3769 | struct frame *f; | |
3770 | char *color_name; | |
3771 | XColor *color; | |
3772 | { | |
3773 | struct xpm_cached_color *p; | |
3774 | int h = xpm_color_bucket (color_name); | |
3775 | ||
3776 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3777 | if (strcmp (p->name, color_name) == 0) | |
3778 | break; | |
3779 | ||
3780 | if (p != NULL) | |
3781 | *color = p->color; | |
3782 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3783 | color_name, color)) | |
3784 | { | |
3785 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3786 | color->blue); | |
3787 | p = xpm_cache_color (f, color_name, color, h); | |
3788 | } | |
3789 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3790 | with transparency, and it's useful. */ | |
3791 | else if (strcmp ("opaque", color_name) == 0) | |
3792 | { | |
3793 | bzero (color, sizeof (XColor)); /* Is this necessary/correct? */ | |
3794 | color->pixel = FRAME_FOREGROUND_PIXEL (f); | |
3795 | p = xpm_cache_color (f, color_name, color, h); | |
3796 | } | |
3797 | ||
3798 | return p != NULL; | |
3799 | } | |
3800 | ||
3801 | ||
3802 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3803 | CLOSURE is a pointer to the frame on which we allocate the | |
3804 | color. Return in *COLOR the allocated color. Value is non-zero | |
3805 | if successful. */ | |
3806 | ||
3807 | static int | |
3808 | xpm_alloc_color (dpy, cmap, color_name, color, closure) | |
3809 | Display *dpy; | |
3810 | Colormap cmap; | |
3811 | char *color_name; | |
3812 | XColor *color; | |
3813 | void *closure; | |
3814 | { | |
3815 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3816 | } | |
3817 | ||
3818 | ||
3819 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3820 | is a pointer to the frame on which we allocate the color. Value is | |
3821 | non-zero if successful. */ | |
3822 | ||
3823 | static int | |
3824 | xpm_free_colors (dpy, cmap, pixels, npixels, closure) | |
3825 | Display *dpy; | |
3826 | Colormap cmap; | |
3827 | Pixel *pixels; | |
3828 | int npixels; | |
3829 | void *closure; | |
3830 | { | |
3831 | return 1; | |
3832 | } | |
3833 | ||
3834 | #endif /* ALLOC_XPM_COLORS */ | |
3835 | ||
3836 | ||
3837 | #ifdef HAVE_NTGUI | |
3838 | ||
3839 | /* XPM library details. */ | |
3840 | ||
3841 | DEF_IMGLIB_FN (XpmFreeAttributes); | |
3842 | DEF_IMGLIB_FN (XpmCreateImageFromBuffer); | |
3843 | DEF_IMGLIB_FN (XpmReadFileToImage); | |
3844 | DEF_IMGLIB_FN (XImageFree); | |
3845 | ||
4ef0d4d0 | 3846 | static int |
0855eb52 | 3847 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3848 | { |
3849 | HMODULE library; | |
3850 | ||
0855eb52 | 3851 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3852 | return 0; |
3853 | ||
3854 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3855 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3856 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3857 | LOAD_IMGLIB_FN (library, XImageFree); | |
3858 | return 1; | |
3859 | } | |
3860 | ||
3861 | #endif /* HAVE_NTGUI */ | |
3862 | ||
3863 | ||
3864 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3865 | for XPM images. Such a list must consist of conses whose car and | |
3866 | cdr are strings. */ | |
3867 | ||
3868 | static int | |
3869 | xpm_valid_color_symbols_p (color_symbols) | |
3870 | Lisp_Object color_symbols; | |
3871 | { | |
3872 | while (CONSP (color_symbols)) | |
3873 | { | |
3874 | Lisp_Object sym = XCAR (color_symbols); | |
3875 | if (!CONSP (sym) | |
3876 | || !STRINGP (XCAR (sym)) | |
3877 | || !STRINGP (XCDR (sym))) | |
3878 | break; | |
3879 | color_symbols = XCDR (color_symbols); | |
3880 | } | |
3881 | ||
3882 | return NILP (color_symbols); | |
3883 | } | |
3884 | ||
3885 | ||
3886 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3887 | ||
3888 | static int | |
3889 | xpm_image_p (object) | |
3890 | Lisp_Object object; | |
3891 | { | |
3892 | struct image_keyword fmt[XPM_LAST]; | |
3893 | bcopy (xpm_format, fmt, sizeof fmt); | |
3894 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) | |
3895 | /* Either `:file' or `:data' must be present. */ | |
3896 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3897 | /* Either no `:color-symbols' or it's a list of conses | |
3898 | whose car and cdr are strings. */ | |
3899 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3900 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3901 | } | |
3902 | ||
ea1aaa6f | 3903 | #endif /* HAVE_XPM || MAC_OS */ |
4ef0d4d0 | 3904 | |
786a43d6 CY |
3905 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
3906 | int | |
3907 | x_create_bitmap_from_xpm_data (f, bits) | |
3908 | struct frame *f; | |
3909 | char **bits; | |
3910 | { | |
3911 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
3912 | int id, rc; | |
3913 | XpmAttributes attrs; | |
3914 | Pixmap bitmap, mask; | |
3915 | ||
3916 | bzero (&attrs, sizeof attrs); | |
3917 | ||
54188d8f CY |
3918 | attrs.visual = FRAME_X_VISUAL (f); |
3919 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3920 | attrs.valuemask |= XpmVisual; | |
3921 | attrs.valuemask |= XpmColormap; | |
3922 | ||
786a43d6 CY |
3923 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
3924 | bits, &bitmap, &mask, &attrs); | |
3925 | if (rc != XpmSuccess) | |
fe45ad15 CY |
3926 | { |
3927 | XpmFreeAttributes (&attrs); | |
3928 | return -1; | |
3929 | } | |
786a43d6 CY |
3930 | |
3931 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3932 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3933 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3934 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3935 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3936 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3937 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3938 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3939 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3940 | ||
3941 | XpmFreeAttributes (&attrs); | |
3942 | return id; | |
3943 | } | |
0d876a14 | 3944 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3945 | |
4ef0d4d0 KS |
3946 | /* Load image IMG which will be displayed on frame F. Value is |
3947 | non-zero if successful. */ | |
3948 | ||
ea1aaa6f ST |
3949 | #ifdef HAVE_XPM |
3950 | ||
4ef0d4d0 KS |
3951 | static int |
3952 | xpm_load (f, img) | |
3953 | struct frame *f; | |
3954 | struct image *img; | |
3955 | { | |
3956 | int rc; | |
3957 | XpmAttributes attrs; | |
3958 | Lisp_Object specified_file, color_symbols; | |
3959 | #ifdef HAVE_NTGUI | |
3960 | HDC hdc; | |
3961 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3962 | #endif /* HAVE_NTGUI */ | |
3963 | ||
3964 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3965 | close colors. Return colors allocated. */ | |
3966 | bzero (&attrs, sizeof attrs); | |
3967 | ||
3968 | #ifndef HAVE_NTGUI | |
3969 | attrs.visual = FRAME_X_VISUAL (f); | |
3970 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3971 | attrs.valuemask |= XpmVisual; | |
3972 | attrs.valuemask |= XpmColormap; | |
3973 | #endif /* HAVE_NTGUI */ | |
3974 | ||
3975 | #ifdef ALLOC_XPM_COLORS | |
3976 | /* Allocate colors with our own functions which handle | |
3977 | failing color allocation more gracefully. */ | |
3978 | attrs.color_closure = f; | |
3979 | attrs.alloc_color = xpm_alloc_color; | |
3980 | attrs.free_colors = xpm_free_colors; | |
3981 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3982 | #else /* not ALLOC_XPM_COLORS */ | |
3983 | /* Let the XPM lib allocate colors. */ | |
3984 | attrs.valuemask |= XpmReturnAllocPixels; | |
3985 | #ifdef XpmAllocCloseColors | |
3986 | attrs.alloc_close_colors = 1; | |
3987 | attrs.valuemask |= XpmAllocCloseColors; | |
3988 | #else /* not XpmAllocCloseColors */ | |
3989 | attrs.closeness = 600; | |
3990 | attrs.valuemask |= XpmCloseness; | |
3991 | #endif /* not XpmAllocCloseColors */ | |
3992 | #endif /* ALLOC_XPM_COLORS */ | |
3993 | ||
3994 | /* If image specification contains symbolic color definitions, add | |
3995 | these to `attrs'. */ | |
3996 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3997 | if (CONSP (color_symbols)) | |
3998 | { | |
3999 | Lisp_Object tail; | |
4000 | XpmColorSymbol *xpm_syms; | |
4001 | int i, size; | |
4002 | ||
4003 | attrs.valuemask |= XpmColorSymbols; | |
4004 | ||
4005 | /* Count number of symbols. */ | |
4006 | attrs.numsymbols = 0; | |
4007 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
4008 | ++attrs.numsymbols; | |
4009 | ||
4010 | /* Allocate an XpmColorSymbol array. */ | |
4011 | size = attrs.numsymbols * sizeof *xpm_syms; | |
4012 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
4013 | bzero (xpm_syms, size); | |
4014 | attrs.colorsymbols = xpm_syms; | |
4015 | ||
4016 | /* Fill the color symbol array. */ | |
4017 | for (tail = color_symbols, i = 0; | |
4018 | CONSP (tail); | |
4019 | ++i, tail = XCDR (tail)) | |
4020 | { | |
4021 | Lisp_Object name = XCAR (XCAR (tail)); | |
4022 | Lisp_Object color = XCDR (XCAR (tail)); | |
4023 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
4024 | strcpy (xpm_syms[i].name, SDATA (name)); | |
4025 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
4026 | strcpy (xpm_syms[i].value, SDATA (color)); | |
4027 | } | |
4028 | } | |
4029 | ||
4030 | /* Create a pixmap for the image, either from a file, or from a | |
4031 | string buffer containing data in the same format as an XPM file. */ | |
4032 | #ifdef ALLOC_XPM_COLORS | |
4033 | xpm_init_color_cache (f, &attrs); | |
4034 | #endif | |
4035 | ||
4036 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4037 | ||
4038 | #ifdef HAVE_NTGUI | |
4039 | { | |
4040 | HDC frame_dc = get_frame_dc (f); | |
4041 | hdc = CreateCompatibleDC (frame_dc); | |
4042 | release_frame_dc (f, frame_dc); | |
4043 | } | |
4044 | #endif /* HAVE_NTGUI */ | |
4045 | ||
4046 | if (STRINGP (specified_file)) | |
4047 | { | |
4048 | Lisp_Object file = x_find_image_file (specified_file); | |
4049 | if (!STRINGP (file)) | |
4050 | { | |
4051 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4052 | return 0; | |
4053 | } | |
4054 | ||
4055 | #ifdef HAVE_NTGUI | |
4056 | /* XpmReadFileToPixmap is not available in the Windows port of | |
4057 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
4058 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
4059 | &xpm_image, &xpm_mask, | |
4060 | &attrs); | |
4061 | #else | |
4062 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
4063 | SDATA (file), &img->pixmap, &img->mask, | |
4064 | &attrs); | |
4065 | #endif /* HAVE_NTGUI */ | |
4066 | } | |
4067 | else | |
4068 | { | |
4069 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
4070 | #ifdef HAVE_NTGUI | |
4071 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
4072 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
4073 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
4074 | &xpm_image, &xpm_mask, | |
4075 | &attrs); | |
4076 | #else | |
4077 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
4078 | SDATA (buffer), | |
4079 | &img->pixmap, &img->mask, | |
4080 | &attrs); | |
4081 | #endif /* HAVE_NTGUI */ | |
4082 | } | |
4083 | ||
4084 | if (rc == XpmSuccess) | |
4085 | { | |
4086 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
4087 | img->colors = colors_in_color_table (&img->ncolors); | |
4088 | #else /* not ALLOC_XPM_COLORS */ | |
4089 | int i; | |
4090 | ||
4091 | #ifdef HAVE_NTGUI | |
4092 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
4093 | plus some duplicate attributes. */ | |
4094 | if (xpm_image && xpm_image->bitmap) | |
4095 | { | |
4096 | img->pixmap = xpm_image->bitmap; | |
4097 | /* XImageFree in libXpm frees XImage struct without destroying | |
4098 | the bitmap, which is what we want. */ | |
4099 | fn_XImageFree (xpm_image); | |
4100 | } | |
4101 | if (xpm_mask && xpm_mask->bitmap) | |
4102 | { | |
4103 | /* The mask appears to be inverted compared with what we expect. | |
4104 | TODO: invert our expectations. See other places where we | |
4105 | have to invert bits because our idea of masks is backwards. */ | |
4106 | HGDIOBJ old_obj; | |
4107 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
4108 | ||
4109 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
4110 | SelectObject (hdc, old_obj); | |
4111 | ||
4112 | img->mask = xpm_mask->bitmap; | |
4113 | fn_XImageFree (xpm_mask); | |
4114 | DeleteDC (hdc); | |
4115 | } | |
4116 | ||
4117 | DeleteDC (hdc); | |
4118 | #endif /* HAVE_NTGUI */ | |
4119 | ||
4120 | /* Remember allocated colors. */ | |
4121 | img->ncolors = attrs.nalloc_pixels; | |
4122 | img->colors = (unsigned long *) xmalloc (img->ncolors | |
4123 | * sizeof *img->colors); | |
4124 | for (i = 0; i < attrs.nalloc_pixels; ++i) | |
4125 | { | |
4126 | img->colors[i] = attrs.alloc_pixels[i]; | |
4127 | #ifdef DEBUG_X_COLORS | |
4128 | register_color (img->colors[i]); | |
4129 | #endif | |
4130 | } | |
4131 | #endif /* not ALLOC_XPM_COLORS */ | |
4132 | ||
4133 | img->width = attrs.width; | |
4134 | img->height = attrs.height; | |
4135 | xassert (img->width > 0 && img->height > 0); | |
4136 | ||
4137 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
4138 | #ifdef HAVE_NTGUI | |
4139 | fn_XpmFreeAttributes (&attrs); | |
4140 | #else | |
4141 | XpmFreeAttributes (&attrs); | |
4142 | #endif /* HAVE_NTGUI */ | |
4143 | } | |
4144 | else | |
4145 | { | |
4146 | #ifdef HAVE_NTGUI | |
4147 | DeleteDC (hdc); | |
4148 | #endif /* HAVE_NTGUI */ | |
4149 | ||
4150 | switch (rc) | |
4151 | { | |
4152 | case XpmOpenFailed: | |
4153 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
4154 | break; | |
4155 | ||
4156 | case XpmFileInvalid: | |
4157 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4158 | break; | |
4159 | ||
4160 | case XpmNoMemory: | |
4161 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4162 | break; | |
4163 | ||
4164 | case XpmColorFailed: | |
4165 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
4166 | break; | |
4167 | ||
4168 | default: | |
4169 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
4170 | break; | |
4171 | } | |
4172 | } | |
4173 | ||
4174 | #ifdef ALLOC_XPM_COLORS | |
4175 | xpm_free_color_cache (); | |
4176 | #endif | |
4177 | return rc == XpmSuccess; | |
4178 | } | |
4179 | ||
4180 | #endif /* HAVE_XPM */ | |
4181 | ||
ea1aaa6f ST |
4182 | #ifdef MAC_OS |
4183 | ||
4184 | /* XPM support functions for Mac OS where libxpm is not available. | |
4185 | Only XPM version 3 (without any extensions) is supported. */ | |
4186 | ||
46accb8f YM |
4187 | static int xpm_scan P_ ((const unsigned char **, const unsigned char *, |
4188 | const unsigned char **, int *)); | |
ea1aaa6f | 4189 | static Lisp_Object xpm_make_color_table_v |
46accb8f YM |
4190 | P_ ((void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
4191 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int))); | |
4192 | static void xpm_put_color_table_v P_ ((Lisp_Object, const unsigned char *, | |
9ecf6403 | 4193 | int, Lisp_Object)); |
ea1aaa6f | 4194 | static Lisp_Object xpm_get_color_table_v P_ ((Lisp_Object, |
46accb8f | 4195 | const unsigned char *, int)); |
ea1aaa6f | 4196 | static Lisp_Object xpm_make_color_table_h |
46accb8f YM |
4197 | P_ ((void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
4198 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int))); | |
4199 | static void xpm_put_color_table_h P_ ((Lisp_Object, const unsigned char *, | |
9ecf6403 | 4200 | int, Lisp_Object)); |
ea1aaa6f | 4201 | static Lisp_Object xpm_get_color_table_h P_ ((Lisp_Object, |
46accb8f YM |
4202 | const unsigned char *, int)); |
4203 | static int xpm_str_to_color_key P_ ((const char *)); | |
ea1aaa6f | 4204 | static int xpm_load_image P_ ((struct frame *, struct image *, |
46accb8f | 4205 | const unsigned char *, const unsigned char *)); |
ea1aaa6f ST |
4206 | |
4207 | /* Tokens returned from xpm_scan. */ | |
4208 | ||
4209 | enum xpm_token | |
4210 | { | |
4211 | XPM_TK_IDENT = 256, | |
4212 | XPM_TK_STRING, | |
4213 | XPM_TK_EOF | |
4214 | }; | |
4215 | ||
4216 | /* Scan an XPM data and return a character (< 256) or a token defined | |
4217 | by enum xpm_token above. *S and END are the start (inclusive) and | |
4218 | the end (exclusive) addresses of the data, respectively. Advance | |
4219 | *S while scanning. If token is either XPM_TK_IDENT or | |
4220 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
4221 | length of the corresponding token, respectively. */ | |
4222 | ||
4223 | static int | |
4224 | xpm_scan (s, end, beg, len) | |
46accb8f | 4225 | const unsigned char **s, *end, **beg; |
ea1aaa6f ST |
4226 | int *len; |
4227 | { | |
4228 | int c; | |
4229 | ||
4230 | while (*s < end) | |
4231 | { | |
4232 | /* Skip white-space. */ | |
4233 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 4234 | ; |
ea1aaa6f ST |
4235 | |
4236 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 4237 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 4238 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
4239 | { |
4240 | *beg = *s - 1; | |
4241 | while (*s < end && | |
4242 | (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
4243 | ++*s; | |
4244 | *len = *s - *beg; | |
4245 | return XPM_TK_IDENT; | |
4246 | } | |
ea1aaa6f | 4247 | else if (c == '"') |
9ecf6403 YM |
4248 | { |
4249 | *beg = *s; | |
4250 | while (*s < end && **s != '"') | |
4251 | ++*s; | |
4252 | *len = *s - *beg; | |
4253 | if (*s < end) | |
4254 | ++*s; | |
4255 | return XPM_TK_STRING; | |
4256 | } | |
ea1aaa6f | 4257 | else if (c == '/') |
9ecf6403 YM |
4258 | { |
4259 | if (*s < end && **s == '*') | |
4260 | { | |
4261 | /* C-style comment. */ | |
4262 | ++*s; | |
4263 | do | |
4264 | { | |
4265 | while (*s < end && *(*s)++ != '*') | |
4266 | ; | |
4267 | } | |
4268 | while (*s < end && **s != '/'); | |
4269 | if (*s < end) | |
4270 | ++*s; | |
4271 | } | |
4272 | else | |
4273 | return c; | |
4274 | } | |
ea1aaa6f | 4275 | else |
9ecf6403 | 4276 | return c; |
ea1aaa6f ST |
4277 | } |
4278 | ||
4279 | return XPM_TK_EOF; | |
4280 | } | |
4281 | ||
4282 | /* Functions for color table lookup in XPM data. A Key is a string | |
4283 | specifying the color of each pixel in XPM data. A value is either | |
4284 | an integer that specifies a pixel color, Qt that specifies | |
4285 | transparency, or Qnil for the unspecified color. If the length of | |
4286 | the key string is one, a vector is used as a table. Otherwise, a | |
4287 | hash table is used. */ | |
4288 | ||
4289 | static Lisp_Object | |
4290 | xpm_make_color_table_v (put_func, get_func) | |
46accb8f YM |
4291 | void (**put_func) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4292 | Lisp_Object (**get_func) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4293 | { |
4294 | *put_func = xpm_put_color_table_v; | |
4295 | *get_func = xpm_get_color_table_v; | |
4296 | return Fmake_vector (make_number (256), Qnil); | |
4297 | } | |
4298 | ||
4299 | static void | |
4300 | xpm_put_color_table_v (color_table, chars_start, chars_len, color) | |
4301 | Lisp_Object color_table; | |
46accb8f | 4302 | const unsigned char *chars_start; |
ea1aaa6f ST |
4303 | int chars_len; |
4304 | Lisp_Object color; | |
4305 | { | |
4306 | XVECTOR (color_table)->contents[*chars_start] = color; | |
4307 | } | |
4308 | ||
4309 | static Lisp_Object | |
4310 | xpm_get_color_table_v (color_table, chars_start, chars_len) | |
4311 | Lisp_Object color_table; | |
46accb8f | 4312 | const unsigned char *chars_start; |
ea1aaa6f ST |
4313 | int chars_len; |
4314 | { | |
4315 | return XVECTOR (color_table)->contents[*chars_start]; | |
4316 | } | |
4317 | ||
4318 | static Lisp_Object | |
4319 | xpm_make_color_table_h (put_func, get_func) | |
46accb8f YM |
4320 | void (**put_func) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4321 | Lisp_Object (**get_func) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4322 | { |
4323 | *put_func = xpm_put_color_table_h; | |
4324 | *get_func = xpm_get_color_table_h; | |
4325 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
4326 | make_float (DEFAULT_REHASH_SIZE), |
4327 | make_float (DEFAULT_REHASH_THRESHOLD), | |
4328 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
4329 | } |
4330 | ||
4331 | static void | |
4332 | xpm_put_color_table_h (color_table, chars_start, chars_len, color) | |
4333 | Lisp_Object color_table; | |
46accb8f | 4334 | const unsigned char *chars_start; |
ea1aaa6f ST |
4335 | int chars_len; |
4336 | Lisp_Object color; | |
4337 | { | |
4338 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4339 | unsigned hash_code; | |
4340 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); | |
4341 | ||
4342 | hash_lookup (table, chars, &hash_code); | |
4343 | hash_put (table, chars, color, hash_code); | |
4344 | } | |
4345 | ||
4346 | static Lisp_Object | |
4347 | xpm_get_color_table_h (color_table, chars_start, chars_len) | |
4348 | Lisp_Object color_table; | |
46accb8f | 4349 | const unsigned char *chars_start; |
ea1aaa6f ST |
4350 | int chars_len; |
4351 | { | |
4352 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4353 | int i = hash_lookup (table, make_unibyte_string (chars_start, chars_len), | |
9ecf6403 | 4354 | NULL); |
ea1aaa6f ST |
4355 | |
4356 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
4357 | } | |
4358 | ||
4359 | enum xpm_color_key { | |
4360 | XPM_COLOR_KEY_S, | |
4361 | XPM_COLOR_KEY_M, | |
4362 | XPM_COLOR_KEY_G4, | |
4363 | XPM_COLOR_KEY_G, | |
4364 | XPM_COLOR_KEY_C | |
4365 | }; | |
4366 | ||
46accb8f | 4367 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
4368 | |
4369 | static int | |
4370 | xpm_str_to_color_key (s) | |
46accb8f | 4371 | const char *s; |
ea1aaa6f ST |
4372 | { |
4373 | int i; | |
4374 | ||
4375 | for (i = 0; | |
4376 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
4377 | i++) | |
4378 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
4379 | return i; | |
4380 | return -1; | |
4381 | } | |
4382 | ||
4383 | static int | |
4384 | xpm_load_image (f, img, contents, end) | |
4385 | struct frame *f; | |
4386 | struct image *img; | |
46accb8f | 4387 | const unsigned char *contents, *end; |
ea1aaa6f | 4388 | { |
46accb8f | 4389 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
4390 | unsigned char buffer[BUFSIZ]; |
4391 | int width, height, x, y; | |
4392 | int num_colors, chars_per_pixel; | |
4393 | int len, LA1; | |
46accb8f YM |
4394 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
4395 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
4396 | Lisp_Object frame, color_symbols, color_table; |
4397 | int best_key, have_mask = 0; | |
4398 | XImagePtr ximg = NULL, mask_img = NULL; | |
4399 | ||
4400 | #define match() \ | |
4401 | LA1 = xpm_scan (&s, end, &beg, &len) | |
4402 | ||
9ecf6403 YM |
4403 | #define expect(TOKEN) \ |
4404 | if (LA1 != (TOKEN)) \ | |
4405 | goto failure; \ | |
4406 | else \ | |
ea1aaa6f ST |
4407 | match () |
4408 | ||
9ecf6403 | 4409 | #define expect_ident(IDENT) \ |
ea1aaa6f | 4410 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
4411 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
4412 | match (); \ | |
4413 | else \ | |
ea1aaa6f ST |
4414 | goto failure |
4415 | ||
4416 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
4417 | goto failure; | |
4418 | s += 9; | |
4419 | match(); | |
4420 | expect_ident ("static"); | |
4421 | expect_ident ("char"); | |
4422 | expect ('*'); | |
4423 | expect (XPM_TK_IDENT); | |
4424 | expect ('['); | |
4425 | expect (']'); | |
4426 | expect ('='); | |
4427 | expect ('{'); | |
4428 | expect (XPM_TK_STRING); | |
4429 | if (len >= BUFSIZ) | |
4430 | goto failure; | |
4431 | memcpy (buffer, beg, len); | |
4432 | buffer[len] = '\0'; | |
4433 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 4434 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
4435 | || width <= 0 || height <= 0 |
4436 | || num_colors <= 0 || chars_per_pixel <= 0) | |
4437 | goto failure; | |
de297941 YM |
4438 | |
4439 | if (!check_image_size (f, width, height)) | |
4440 | { | |
4441 | image_error ("Invalid image size", Qnil, Qnil); | |
4442 | goto failure; | |
4443 | } | |
4444 | ||
ea1aaa6f ST |
4445 | expect (','); |
4446 | ||
4447 | XSETFRAME (frame, f); | |
4448 | if (!NILP (Fxw_display_color_p (frame))) | |
4449 | best_key = XPM_COLOR_KEY_C; | |
4450 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
4451 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 4452 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
4453 | else |
4454 | best_key = XPM_COLOR_KEY_M; | |
4455 | ||
4456 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
4457 | if (chars_per_pixel == 1) | |
4458 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 4459 | &get_color_table); |
ea1aaa6f ST |
4460 | else |
4461 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 4462 | &get_color_table); |
ea1aaa6f ST |
4463 | |
4464 | while (num_colors-- > 0) | |
4465 | { | |
4466 | unsigned char *color, *max_color; | |
4467 | int key, next_key, max_key = 0; | |
4468 | Lisp_Object symbol_color = Qnil, color_val; | |
4469 | XColor cdef; | |
4470 | ||
4471 | expect (XPM_TK_STRING); | |
4472 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 4473 | goto failure; |
ea1aaa6f ST |
4474 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
4475 | buffer[len - chars_per_pixel] = '\0'; | |
4476 | ||
4477 | str = strtok (buffer, " \t"); | |
4478 | if (str == NULL) | |
9ecf6403 | 4479 | goto failure; |
ea1aaa6f ST |
4480 | key = xpm_str_to_color_key (str); |
4481 | if (key < 0) | |
9ecf6403 | 4482 | goto failure; |
ea1aaa6f | 4483 | do |
9ecf6403 YM |
4484 | { |
4485 | color = strtok (NULL, " \t"); | |
4486 | if (color == NULL) | |
4487 | goto failure; | |
ea1aaa6f | 4488 | |
9db94f82 | 4489 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
4490 | { |
4491 | next_key = xpm_str_to_color_key (str); | |
4492 | if (next_key >= 0) | |
4493 | break; | |
4494 | color[strlen (color)] = ' '; | |
4495 | } | |
ea1aaa6f | 4496 | |
9ecf6403 YM |
4497 | if (key == XPM_COLOR_KEY_S) |
4498 | { | |
4499 | if (NILP (symbol_color)) | |
4500 | symbol_color = build_string (color); | |
4501 | } | |
4502 | else if (max_key < key && key <= best_key) | |
4503 | { | |
4504 | max_key = key; | |
4505 | max_color = color; | |
4506 | } | |
4507 | key = next_key; | |
4508 | } | |
ea1aaa6f ST |
4509 | while (str); |
4510 | ||
4511 | color_val = Qnil; | |
4512 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
4513 | { |
4514 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
4515 | ||
4516 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 YM |
4517 | { |
4518 | if (xstricmp (SDATA (XCDR (specified_color)), "None") == 0) | |
4519 | color_val = Qt; | |
4520 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
4521 | &cdef, 0)) | |
4522 | color_val = make_number (cdef.pixel); | |
4523 | } | |
9ecf6403 | 4524 | } |
ea1aaa6f | 4525 | if (NILP (color_val) && max_key > 0) |
9db94f82 YM |
4526 | { |
4527 | if (xstricmp (max_color, "None") == 0) | |
4528 | color_val = Qt; | |
4529 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
4530 | color_val = make_number (cdef.pixel); | |
4531 | } | |
ea1aaa6f | 4532 | if (!NILP (color_val)) |
9ecf6403 | 4533 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
4534 | |
4535 | expect (','); | |
4536 | } | |
4537 | ||
4538 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
9ecf6403 | 4539 | &ximg, &img->pixmap) |
ea1aaa6f | 4540 | || !x_create_x_image_and_pixmap (f, width, height, 1, |
9ecf6403 | 4541 | &mask_img, &img->mask)) |
ea1aaa6f ST |
4542 | { |
4543 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4544 | goto error; | |
4545 | } | |
4546 | ||
4547 | for (y = 0; y < height; y++) | |
4548 | { | |
4549 | expect (XPM_TK_STRING); | |
4550 | str = beg; | |
4551 | if (len < width * chars_per_pixel) | |
9ecf6403 | 4552 | goto failure; |
ea1aaa6f | 4553 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
4554 | { |
4555 | Lisp_Object color_val = | |
4556 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4557 | ||
4558 | XPutPixel (ximg, x, y, | |
4559 | (INTEGERP (color_val) ? XINT (color_val) | |
4560 | : FRAME_FOREGROUND_PIXEL (f))); | |
4561 | XPutPixel (mask_img, x, y, | |
4562 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
4563 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
4564 | } | |
ea1aaa6f | 4565 | if (y + 1 < height) |
9ecf6403 | 4566 | expect (','); |
ea1aaa6f ST |
4567 | } |
4568 | ||
4569 | img->width = width; | |
4570 | img->height = height; | |
4571 | ||
0b8ac842 YM |
4572 | /* Maybe fill in the background field while we have ximg handy. */ |
4573 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4574 | IMAGE_BACKGROUND (img, f, ximg); | |
4575 | ||
ea1aaa6f ST |
4576 | x_put_x_image (f, ximg, img->pixmap, width, height); |
4577 | x_destroy_x_image (ximg); | |
4578 | if (have_mask) | |
4579 | { | |
9ecf6403 YM |
4580 | /* Fill in the background_transparent field while we have the |
4581 | mask handy. */ | |
4582 | image_background_transparent (img, f, mask_img); | |
4583 | ||
ea1aaa6f ST |
4584 | x_put_x_image (f, mask_img, img->mask, width, height); |
4585 | x_destroy_x_image (mask_img); | |
4586 | } | |
4587 | else | |
4588 | { | |
4589 | x_destroy_x_image (mask_img); | |
4590 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4591 | img->mask = NO_PIXMAP; | |
4592 | } | |
4593 | ||
4594 | return 1; | |
4595 | ||
4596 | failure: | |
4597 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4598 | error: | |
4599 | x_destroy_x_image (ximg); | |
4600 | x_destroy_x_image (mask_img); | |
4601 | x_clear_image (f, img); | |
4602 | return 0; | |
4603 | ||
4604 | #undef match | |
4605 | #undef expect | |
4606 | #undef expect_ident | |
4607 | } | |
4608 | ||
4609 | static int | |
4610 | xpm_load (f, img) | |
4611 | struct frame *f; | |
4612 | struct image *img; | |
4613 | { | |
4614 | int success_p = 0; | |
4615 | Lisp_Object file_name; | |
4616 | ||
4617 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4618 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4619 | if (STRINGP (file_name)) | |
4620 | { | |
4621 | Lisp_Object file; | |
4622 | unsigned char *contents; | |
4623 | int size; | |
4624 | struct gcpro gcpro1; | |
4625 | ||
4626 | file = x_find_image_file (file_name); | |
4627 | GCPRO1 (file); | |
4628 | if (!STRINGP (file)) | |
9ecf6403 YM |
4629 | { |
4630 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4631 | UNGCPRO; | |
4632 | return 0; | |
4633 | } | |
ea1aaa6f ST |
4634 | |
4635 | contents = slurp_file (SDATA (file), &size); | |
4636 | if (contents == NULL) | |
9ecf6403 YM |
4637 | { |
4638 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
4639 | UNGCPRO; | |
4640 | return 0; | |
4641 | } | |
ea1aaa6f ST |
4642 | |
4643 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4644 | xfree (contents); | |
4645 | UNGCPRO; | |
4646 | } | |
4647 | else | |
4648 | { | |
4649 | Lisp_Object data; | |
4650 | ||
4651 | data = image_spec_value (img->spec, QCdata, NULL); | |
4652 | success_p = xpm_load_image (f, img, SDATA (data), | |
9ecf6403 | 4653 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4654 | } |
4655 | ||
4656 | return success_p; | |
4657 | } | |
4658 | ||
4659 | #endif /* MAC_OS */ | |
b0da69a7 | 4660 | |
ea1aaa6f | 4661 | |
4ef0d4d0 KS |
4662 | \f |
4663 | /*********************************************************************** | |
4664 | Color table | |
4665 | ***********************************************************************/ | |
4666 | ||
4667 | #ifdef COLOR_TABLE_SUPPORT | |
4668 | ||
4669 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4670 | ||
4671 | struct ct_color | |
4672 | { | |
4673 | int r, g, b; | |
4674 | unsigned long pixel; | |
4675 | ||
4676 | /* Next in color table collision list. */ | |
4677 | struct ct_color *next; | |
4678 | }; | |
4679 | ||
4680 | /* The bucket vector size to use. Must be prime. */ | |
4681 | ||
4682 | #define CT_SIZE 101 | |
4683 | ||
4684 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4685 | ||
4686 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4687 | ||
4688 | /* The color hash table. */ | |
4689 | ||
4690 | struct ct_color **ct_table; | |
4691 | ||
4692 | /* Number of entries in the color table. */ | |
4693 | ||
4694 | int ct_colors_allocated; | |
4695 | ||
4696 | /* Initialize the color table. */ | |
4697 | ||
4698 | static void | |
4699 | init_color_table () | |
4700 | { | |
4701 | int size = CT_SIZE * sizeof (*ct_table); | |
4702 | ct_table = (struct ct_color **) xmalloc (size); | |
4703 | bzero (ct_table, size); | |
4704 | ct_colors_allocated = 0; | |
4705 | } | |
4706 | ||
4707 | ||
4708 | /* Free memory associated with the color table. */ | |
4709 | ||
4710 | static void | |
4711 | free_color_table () | |
4712 | { | |
4713 | int i; | |
4714 | struct ct_color *p, *next; | |
4715 | ||
4716 | for (i = 0; i < CT_SIZE; ++i) | |
4717 | for (p = ct_table[i]; p; p = next) | |
4718 | { | |
4719 | next = p->next; | |
4720 | xfree (p); | |
4721 | } | |
4722 | ||
4723 | xfree (ct_table); | |
4724 | ct_table = NULL; | |
4725 | } | |
4726 | ||
4727 | ||
4728 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4729 | entry for that color already is in the color table, return the | |
4730 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4731 | G, B, and make an entry in the color table. */ | |
4732 | ||
4733 | static unsigned long | |
4734 | lookup_rgb_color (f, r, g, b) | |
4735 | struct frame *f; | |
4736 | int r, g, b; | |
4737 | { | |
4738 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4739 | int i = hash % CT_SIZE; | |
4740 | struct ct_color *p; | |
4741 | Display_Info *dpyinfo; | |
4742 | ||
4743 | /* Handle TrueColor visuals specially, which improves performance by | |
4744 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4745 | a nop, and pixel colors specify RGB values directly. See also | |
4746 | the Xlib spec, chapter 3.1. */ | |
4747 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4748 | if (dpyinfo->red_bits > 0) | |
4749 | { | |
4750 | unsigned long pr, pg, pb; | |
4751 | ||
4752 | /* Apply gamma-correction like normal color allocation does. */ | |
4753 | if (f->gamma) | |
4754 | { | |
4755 | XColor color; | |
4756 | color.red = r, color.green = g, color.blue = b; | |
4757 | gamma_correct (f, &color); | |
4758 | r = color.red, g = color.green, b = color.blue; | |
4759 | } | |
4760 | ||
4761 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4762 | them to the right position in the pixel color. Note that the | |
4763 | original RGB values are 16-bit values, as usual in X. */ | |
4764 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4765 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4766 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4767 | ||
4768 | /* Assemble the pixel color. */ | |
4769 | return pr | pg | pb; | |
4770 | } | |
1f026899 | 4771 | |
4ef0d4d0 KS |
4772 | for (p = ct_table[i]; p; p = p->next) |
4773 | if (p->r == r && p->g == g && p->b == b) | |
4774 | break; | |
4775 | ||
4776 | if (p == NULL) | |
4777 | { | |
4778 | ||
4779 | #ifdef HAVE_X_WINDOWS | |
4780 | XColor color; | |
4781 | Colormap cmap; | |
4782 | int rc; | |
4783 | ||
4784 | color.red = r; | |
4785 | color.green = g; | |
4786 | color.blue = b; | |
4787 | ||
4788 | cmap = FRAME_X_COLORMAP (f); | |
4789 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4790 | if (rc) | |
4791 | { | |
4792 | ++ct_colors_allocated; | |
4793 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4794 | p->r = r; | |
4795 | p->g = g; | |
4796 | p->b = b; | |
4797 | p->pixel = color.pixel; | |
4798 | p->next = ct_table[i]; | |
4799 | ct_table[i] = p; | |
4800 | } | |
4801 | else | |
4802 | return FRAME_FOREGROUND_PIXEL (f); | |
4803 | ||
4804 | #else | |
4805 | COLORREF color; | |
4806 | #ifdef HAVE_NTGUI | |
4807 | color = PALETTERGB (r, g, b); | |
4808 | #else | |
4809 | color = RGB_TO_ULONG (r, g, b); | |
4810 | #endif /* HAVE_NTGUI */ | |
4811 | ++ct_colors_allocated; | |
4812 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4813 | p->r = r; | |
4814 | p->g = g; | |
4815 | p->b = b; | |
4816 | p->pixel = color; | |
4817 | p->next = ct_table[i]; | |
4818 | ct_table[i] = p; | |
4819 | #endif /* HAVE_X_WINDOWS */ | |
4820 | ||
4821 | } | |
4822 | ||
4823 | return p->pixel; | |
4824 | } | |
4825 | ||
4826 | ||
4827 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4828 | table. If not already present, allocate it. Value is PIXEL. */ | |
4829 | ||
4830 | static unsigned long | |
4831 | lookup_pixel_color (f, pixel) | |
4832 | struct frame *f; | |
4833 | unsigned long pixel; | |
4834 | { | |
4835 | int i = pixel % CT_SIZE; | |
4836 | struct ct_color *p; | |
4837 | ||
4838 | for (p = ct_table[i]; p; p = p->next) | |
4839 | if (p->pixel == pixel) | |
4840 | break; | |
4841 | ||
4842 | if (p == NULL) | |
4843 | { | |
4844 | XColor color; | |
4845 | Colormap cmap; | |
4846 | int rc; | |
4847 | ||
4848 | #ifdef HAVE_X_WINDOWS | |
4849 | cmap = FRAME_X_COLORMAP (f); | |
4850 | color.pixel = pixel; | |
4851 | x_query_color (f, &color); | |
4852 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4853 | #else | |
4854 | BLOCK_INPUT; | |
4855 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4856 | color.pixel = pixel; | |
4857 | XQueryColor (NULL, cmap, &color); | |
4858 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4859 | UNBLOCK_INPUT; | |
4860 | #endif /* HAVE_X_WINDOWS */ | |
4861 | ||
4862 | if (rc) | |
4863 | { | |
4864 | ++ct_colors_allocated; | |
4865 | ||
4866 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4867 | p->r = color.red; | |
4868 | p->g = color.green; | |
4869 | p->b = color.blue; | |
4870 | p->pixel = pixel; | |
4871 | p->next = ct_table[i]; | |
4872 | ct_table[i] = p; | |
4873 | } | |
4874 | else | |
4875 | return FRAME_FOREGROUND_PIXEL (f); | |
4876 | } | |
4877 | return p->pixel; | |
4878 | } | |
4879 | ||
4880 | ||
4881 | /* Value is a vector of all pixel colors contained in the color table, | |
4882 | allocated via xmalloc. Set *N to the number of colors. */ | |
4883 | ||
4884 | static unsigned long * | |
4885 | colors_in_color_table (n) | |
4886 | int *n; | |
4887 | { | |
4888 | int i, j; | |
4889 | struct ct_color *p; | |
4890 | unsigned long *colors; | |
4891 | ||
4892 | if (ct_colors_allocated == 0) | |
4893 | { | |
4894 | *n = 0; | |
4895 | colors = NULL; | |
4896 | } | |
4897 | else | |
4898 | { | |
4899 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4900 | * sizeof *colors); | |
4901 | *n = ct_colors_allocated; | |
4902 | ||
4903 | for (i = j = 0; i < CT_SIZE; ++i) | |
4904 | for (p = ct_table[i]; p; p = p->next) | |
4905 | colors[j++] = p->pixel; | |
4906 | } | |
4907 | ||
4908 | return colors; | |
4909 | } | |
4910 | ||
4911 | #else /* COLOR_TABLE_SUPPORT */ | |
4912 | ||
4913 | static unsigned long | |
4914 | lookup_rgb_color (f, r, g, b) | |
4915 | struct frame *f; | |
4916 | int r, g, b; | |
4917 | { | |
4918 | unsigned long pixel; | |
4919 | ||
4920 | #ifdef MAC_OS | |
4921 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4922 | gamma_correct (f, &pixel); | |
4923 | #endif /* MAC_OS */ | |
4924 | ||
4925 | #ifdef HAVE_NTGUI | |
4926 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4927 | #endif /* HAVE_NTGUI */ | |
4928 | ||
4929 | return pixel; | |
4930 | } | |
4931 | ||
4932 | static void | |
4933 | init_color_table () | |
4934 | { | |
4935 | } | |
4936 | #endif /* COLOR_TABLE_SUPPORT */ | |
4937 | ||
4938 | \f | |
4939 | /*********************************************************************** | |
4940 | Algorithms | |
4941 | ***********************************************************************/ | |
4942 | ||
4943 | static XColor *x_to_xcolors P_ ((struct frame *, struct image *, int)); | |
4944 | static void x_from_xcolors P_ ((struct frame *, struct image *, XColor *)); | |
4945 | static void x_detect_edges P_ ((struct frame *, struct image *, int[9], int)); | |
4946 | ||
4947 | #ifdef HAVE_NTGUI | |
4948 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4949 | #endif /* HAVE_NTGUI */ | |
4950 | ||
4951 | /* Non-zero means draw a cross on images having `:conversion | |
4952 | disabled'. */ | |
4953 | ||
4954 | int cross_disabled_images; | |
4955 | ||
4956 | /* Edge detection matrices for different edge-detection | |
4957 | strategies. */ | |
4958 | ||
4959 | static int emboss_matrix[9] = { | |
4960 | /* x - 1 x x + 1 */ | |
4961 | 2, -1, 0, /* y - 1 */ | |
4962 | -1, 0, 1, /* y */ | |
4963 | 0, 1, -2 /* y + 1 */ | |
4964 | }; | |
4965 | ||
4966 | static int laplace_matrix[9] = { | |
4967 | /* x - 1 x x + 1 */ | |
4968 | 1, 0, 0, /* y - 1 */ | |
4969 | 0, 0, 0, /* y */ | |
4970 | 0, 0, -1 /* y + 1 */ | |
4971 | }; | |
4972 | ||
4973 | /* Value is the intensity of the color whose red/green/blue values | |
4974 | are R, G, and B. */ | |
4975 | ||
4976 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4977 | ||
4978 | ||
4979 | /* On frame F, return an array of XColor structures describing image | |
4980 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4981 | non-zero means also fill the red/green/blue members of the XColor | |
4982 | structures. Value is a pointer to the array of XColors structures, | |
4983 | allocated with xmalloc; it must be freed by the caller. */ | |
4984 | ||
4985 | static XColor * | |
4986 | x_to_xcolors (f, img, rgb_p) | |
4987 | struct frame *f; | |
4988 | struct image *img; | |
4989 | int rgb_p; | |
4990 | { | |
4991 | int x, y; | |
4992 | XColor *colors, *p; | |
4993 | XImagePtr_or_DC ximg; | |
4994 | #ifdef HAVE_NTGUI | |
4995 | HDC hdc; | |
4996 | HGDIOBJ prev; | |
4997 | #endif /* HAVE_NTGUI */ | |
4998 | ||
4999 | colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors); | |
5000 | ||
5001 | #ifndef HAVE_NTGUI | |
5002 | /* Get the X image IMG->pixmap. */ | |
5003 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
5004 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
5005 | #else | |
5006 | /* Load the image into a memory device context. */ | |
5007 | hdc = get_frame_dc (f); | |
5008 | ximg = CreateCompatibleDC (hdc); | |
5009 | release_frame_dc (f, hdc); | |
5010 | prev = SelectObject (ximg, img->pixmap); | |
5011 | #endif /* HAVE_NTGUI */ | |
5012 | ||
5013 | /* Fill the `pixel' members of the XColor array. I wished there | |
5014 | were an easy and portable way to circumvent XGetPixel. */ | |
5015 | p = colors; | |
5016 | for (y = 0; y < img->height; ++y) | |
5017 | { | |
5018 | XColor *row = p; | |
5019 | ||
5020 | #ifdef HAVE_X_WINDOWS | |
5021 | for (x = 0; x < img->width; ++x, ++p) | |
5022 | p->pixel = XGetPixel (ximg, x, y); | |
5023 | if (rgb_p) | |
5024 | x_query_colors (f, row, img->width); | |
5025 | ||
5026 | #else | |
5027 | ||
5028 | for (x = 0; x < img->width; ++x, ++p) | |
5029 | { | |
5030 | /* W32_TODO: palette support needed here? */ | |
5031 | p->pixel = GET_PIXEL (ximg, x, y); | |
5032 | if (rgb_p) | |
5033 | { | |
5034 | #ifdef MAC_OS | |
5035 | p->red = RED16_FROM_ULONG (p->pixel); | |
5036 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
5037 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
5038 | #endif /* MAC_OS */ | |
5039 | #ifdef HAVE_NTGUI | |
5040 | p->red = 256 * GetRValue (p->pixel); | |
5041 | p->green = 256 * GetGValue (p->pixel); | |
5042 | p->blue = 256 * GetBValue (p->pixel); | |
5043 | #endif /* HAVE_NTGUI */ | |
5044 | } | |
5045 | } | |
5046 | #endif /* HAVE_X_WINDOWS */ | |
5047 | } | |
5048 | ||
5049 | Destroy_Image (ximg, prev); | |
5050 | ||
5051 | return colors; | |
5052 | } | |
5053 | ||
5054 | #ifdef HAVE_NTGUI | |
5055 | ||
5056 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
5057 | created with CreateDIBSection, with the pointer to the bit values | |
5058 | stored in ximg->data. */ | |
5059 | ||
5060 | static void XPutPixel (ximg, x, y, color) | |
5061 | XImagePtr ximg; | |
5062 | int x, y; | |
5063 | COLORREF color; | |
5064 | { | |
5065 | int width = ximg->info.bmiHeader.biWidth; | |
5066 | int height = ximg->info.bmiHeader.biHeight; | |
5067 | unsigned char * pixel; | |
5068 | ||
5069 | /* True color images. */ | |
5070 | if (ximg->info.bmiHeader.biBitCount == 24) | |
5071 | { | |
5072 | int rowbytes = width * 3; | |
5073 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
5074 | if (rowbytes % 4) | |
5075 | rowbytes += 4 - (rowbytes % 4); | |
5076 | ||
5077 | pixel = ximg->data + y * rowbytes + x * 3; | |
5078 | /* Windows bitmaps are in BGR order. */ | |
5079 | *pixel = GetBValue (color); | |
5080 | *(pixel + 1) = GetGValue (color); | |
5081 | *(pixel + 2) = GetRValue (color); | |
5082 | } | |
5083 | /* Monochrome images. */ | |
5084 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
5085 | { | |
5086 | int rowbytes = width / 8; | |
5087 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
5088 | if (rowbytes % 4) | |
5089 | rowbytes += 4 - (rowbytes % 4); | |
5090 | pixel = ximg->data + y * rowbytes + x / 8; | |
5091 | /* Filter out palette info. */ | |
5092 | if (color & 0x00ffffff) | |
5093 | *pixel = *pixel | (1 << x % 8); | |
5094 | else | |
5095 | *pixel = *pixel & ~(1 << x % 8); | |
5096 | } | |
5097 | else | |
5098 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
5099 | } | |
5100 | ||
5101 | #endif /* HAVE_NTGUI */ | |
5102 | ||
5103 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
5104 | RGB members are set. F is the frame on which this all happens. | |
5105 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
5106 | ||
5107 | static void | |
5108 | x_from_xcolors (f, img, colors) | |
5109 | struct frame *f; | |
5110 | struct image *img; | |
5111 | XColor *colors; | |
5112 | { | |
5113 | int x, y; | |
5114 | XImagePtr oimg; | |
5115 | Pixmap pixmap; | |
5116 | XColor *p; | |
5117 | ||
5118 | init_color_table (); | |
5119 | ||
5120 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
5121 | &oimg, &pixmap); | |
5122 | p = colors; | |
5123 | for (y = 0; y < img->height; ++y) | |
5124 | for (x = 0; x < img->width; ++x, ++p) | |
5125 | { | |
5126 | unsigned long pixel; | |
5127 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
5128 | XPutPixel (oimg, x, y, pixel); | |
5129 | } | |
5130 | ||
5131 | xfree (colors); | |
5132 | x_clear_image_1 (f, img, 1, 0, 1); | |
5133 | ||
5134 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
5135 | x_destroy_x_image (oimg); | |
5136 | img->pixmap = pixmap; | |
5137 | #ifdef COLOR_TABLE_SUPPORT | |
5138 | img->colors = colors_in_color_table (&img->ncolors); | |
5139 | free_color_table (); | |
5140 | #endif /* COLOR_TABLE_SUPPORT */ | |
5141 | } | |
5142 | ||
5143 | ||
5144 | /* On frame F, perform edge-detection on image IMG. | |
5145 | ||
5146 | MATRIX is a nine-element array specifying the transformation | |
5147 | matrix. See emboss_matrix for an example. | |
5148 | ||
5149 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
5150 | outgoing image. */ | |
5151 | ||
5152 | static void | |
5153 | x_detect_edges (f, img, matrix, color_adjust) | |
5154 | struct frame *f; | |
5155 | struct image *img; | |
5156 | int matrix[9], color_adjust; | |
5157 | { | |
5158 | XColor *colors = x_to_xcolors (f, img, 1); | |
5159 | XColor *new, *p; | |
5160 | int x, y, i, sum; | |
5161 | ||
5162 | for (i = sum = 0; i < 9; ++i) | |
5163 | sum += abs (matrix[i]); | |
5164 | ||
5165 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
5166 | ||
5167 | new = (XColor *) xmalloc (img->width * img->height * sizeof *new); | |
5168 | ||
5169 | for (y = 0; y < img->height; ++y) | |
5170 | { | |
5171 | p = COLOR (new, 0, y); | |
5172 | p->red = p->green = p->blue = 0xffff/2; | |
5173 | p = COLOR (new, img->width - 1, y); | |
5174 | p->red = p->green = p->blue = 0xffff/2; | |
5175 | } | |
5176 | ||
5177 | for (x = 1; x < img->width - 1; ++x) | |
5178 | { | |
5179 | p = COLOR (new, x, 0); | |
5180 | p->red = p->green = p->blue = 0xffff/2; | |
5181 | p = COLOR (new, x, img->height - 1); | |
5182 | p->red = p->green = p->blue = 0xffff/2; | |
5183 | } | |
5184 | ||
5185 | for (y = 1; y < img->height - 1; ++y) | |
5186 | { | |
5187 | p = COLOR (new, 1, y); | |
5188 | ||
5189 | for (x = 1; x < img->width - 1; ++x, ++p) | |
5190 | { | |
5191 | int r, g, b, y1, x1; | |
5192 | ||
5193 | r = g = b = i = 0; | |
5194 | for (y1 = y - 1; y1 < y + 2; ++y1) | |
5195 | for (x1 = x - 1; x1 < x + 2; ++x1, ++i) | |
5196 | if (matrix[i]) | |
5197 | { | |
5198 | XColor *t = COLOR (colors, x1, y1); | |
5199 | r += matrix[i] * t->red; | |
5200 | g += matrix[i] * t->green; | |
5201 | b += matrix[i] * t->blue; | |
5202 | } | |
5203 | ||
5204 | r = (r / sum + color_adjust) & 0xffff; | |
5205 | g = (g / sum + color_adjust) & 0xffff; | |
5206 | b = (b / sum + color_adjust) & 0xffff; | |
5207 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
5208 | } | |
5209 | } | |
5210 | ||
5211 | xfree (colors); | |
5212 | x_from_xcolors (f, img, new); | |
5213 | ||
5214 | #undef COLOR | |
5215 | } | |
5216 | ||
5217 | ||
5218 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
5219 | on frame F. */ | |
5220 | ||
5221 | static void | |
5222 | x_emboss (f, img) | |
5223 | struct frame *f; | |
5224 | struct image *img; | |
5225 | { | |
5226 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
5227 | } | |
5228 | ||
5229 | ||
5230 | /* Transform image IMG which is used on frame F with a Laplace | |
5231 | edge-detection algorithm. The result is an image that can be used | |
5232 | to draw disabled buttons, for example. */ | |
5233 | ||
5234 | static void | |
5235 | x_laplace (f, img) | |
5236 | struct frame *f; | |
5237 | struct image *img; | |
5238 | { | |
5239 | x_detect_edges (f, img, laplace_matrix, 45000); | |
5240 | } | |
5241 | ||
5242 | ||
5243 | /* Perform edge-detection on image IMG on frame F, with specified | |
5244 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
5245 | ||
5246 | MATRIX must be either | |
5247 | ||
5248 | - a list of at least 9 numbers in row-major form | |
5249 | - a vector of at least 9 numbers | |
5250 | ||
5251 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
5252 | number. */ | |
5253 | ||
5254 | static void | |
5255 | x_edge_detection (f, img, matrix, color_adjust) | |
5256 | struct frame *f; | |
5257 | struct image *img; | |
5258 | Lisp_Object matrix, color_adjust; | |
5259 | { | |
5260 | int i = 0; | |
5261 | int trans[9]; | |
5262 | ||
5263 | if (CONSP (matrix)) | |
5264 | { | |
5265 | for (i = 0; | |
5266 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
5267 | ++i, matrix = XCDR (matrix)) | |
5268 | trans[i] = XFLOATINT (XCAR (matrix)); | |
5269 | } | |
5270 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
5271 | { | |
5272 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
5273 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
5274 | } | |
5275 | ||
5276 | if (NILP (color_adjust)) | |
5277 | color_adjust = make_number (0xffff / 2); | |
5278 | ||
5279 | if (i == 9 && NUMBERP (color_adjust)) | |
5280 | x_detect_edges (f, img, trans, (int) XFLOATINT (color_adjust)); | |
5281 | } | |
5282 | ||
5283 | ||
5284 | /* Transform image IMG on frame F so that it looks disabled. */ | |
5285 | ||
5286 | static void | |
5287 | x_disable_image (f, img) | |
5288 | struct frame *f; | |
5289 | struct image *img; | |
5290 | { | |
5291 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
5292 | #ifdef HAVE_NTGUI | |
5293 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
5294 | #else | |
5295 | int n_planes = dpyinfo->n_planes; | |
5296 | #endif /* HAVE_NTGUI */ | |
5297 | ||
5298 | if (n_planes >= 2) | |
5299 | { | |
5300 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
5301 | drawing such images with a stipple can look very odd, so | |
5302 | we're using this method instead. */ | |
5303 | XColor *colors = x_to_xcolors (f, img, 1); | |
5304 | XColor *p, *end; | |
5305 | const int h = 15000; | |
5306 | const int l = 30000; | |
5307 | ||
5308 | for (p = colors, end = colors + img->width * img->height; | |
5309 | p < end; | |
5310 | ++p) | |
5311 | { | |
5312 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
5313 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
5314 | p->red = p->green = p->blue = i2; | |
5315 | } | |
5316 | ||
5317 | x_from_xcolors (f, img, colors); | |
5318 | } | |
5319 | ||
5320 | /* Draw a cross over the disabled image, if we must or if we | |
5321 | should. */ | |
5322 | if (n_planes < 2 || cross_disabled_images) | |
5323 | { | |
5324 | #ifndef HAVE_NTGUI | |
5325 | Display *dpy = FRAME_X_DISPLAY (f); | |
5326 | GC gc; | |
5327 | ||
5328 | #ifdef MAC_OS | |
9ecf6403 | 5329 | #define MaskForeground(f) PIX_MASK_DRAW |
4ef0d4d0 | 5330 | #else |
4ef0d4d0 KS |
5331 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
5332 | #endif | |
5333 | ||
ae8279db | 5334 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); |
4ef0d4d0 KS |
5335 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
5336 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
5337 | img->width - 1, img->height - 1); | |
5338 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
5339 | img->width - 1, 0); | |
5340 | XFreeGC (dpy, gc); | |
5341 | ||
5342 | if (img->mask) | |
5343 | { | |
ae8279db | 5344 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
5345 | XSetForeground (dpy, gc, MaskForeground (f)); |
5346 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
5347 | img->width - 1, img->height - 1); | |
5348 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
5349 | img->width - 1, 0); | |
5350 | XFreeGC (dpy, gc); | |
5351 | } | |
5352 | #else | |
5353 | HDC hdc, bmpdc; | |
5354 | HGDIOBJ prev; | |
5355 | ||
5356 | hdc = get_frame_dc (f); | |
5357 | bmpdc = CreateCompatibleDC (hdc); | |
5358 | release_frame_dc (f, hdc); | |
5359 | ||
5360 | prev = SelectObject (bmpdc, img->pixmap); | |
5361 | ||
5362 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
5363 | MoveToEx (bmpdc, 0, 0, NULL); | |
5364 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5365 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5366 | LineTo (bmpdc, img->width - 1, 0); | |
5367 | ||
5368 | if (img->mask) | |
5369 | { | |
5370 | SelectObject (bmpdc, img->mask); | |
5371 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
5372 | MoveToEx (bmpdc, 0, 0, NULL); | |
5373 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5374 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5375 | LineTo (bmpdc, img->width - 1, 0); | |
5376 | } | |
5377 | SelectObject (bmpdc, prev); | |
5378 | DeleteDC (bmpdc); | |
5379 | #endif /* HAVE_NTGUI */ | |
5380 | } | |
5381 | } | |
5382 | ||
5383 | ||
5384 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
5385 | name of an image file, for error messages. HOW determines how to | |
5386 | determine the background color of IMG. If it is a list '(R G B)', | |
5387 | with R, G, and B being integers >= 0, take that as the color of the | |
5388 | background. Otherwise, determine the background color of IMG | |
5389 | heuristically. Value is non-zero if successful. */ | |
5390 | ||
5391 | static int | |
5392 | x_build_heuristic_mask (f, img, how) | |
5393 | struct frame *f; | |
5394 | struct image *img; | |
5395 | Lisp_Object how; | |
5396 | { | |
5397 | XImagePtr_or_DC ximg; | |
5398 | #ifndef HAVE_NTGUI | |
5399 | XImagePtr mask_img; | |
5400 | #else | |
5401 | HDC frame_dc; | |
5402 | HGDIOBJ prev; | |
5403 | char *mask_img; | |
5404 | int row_width; | |
5405 | #endif /* HAVE_NTGUI */ | |
5406 | int x, y, rc, use_img_background; | |
5407 | unsigned long bg = 0; | |
5408 | ||
5409 | if (img->mask) | |
5410 | { | |
5411 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
5412 | img->mask = NO_PIXMAP; | |
5413 | img->background_transparent_valid = 0; | |
5414 | } | |
5415 | ||
5416 | #ifndef HAVE_NTGUI | |
5417 | /* Create an image and pixmap serving as mask. */ | |
5418 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
5419 | &mask_img, &img->mask); | |
5420 | if (!rc) | |
5421 | return 0; | |
5422 | ||
5423 | /* Get the X image of IMG->pixmap. */ | |
5424 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
5425 | img->width, img->height, | |
5426 | ~0, ZPixmap); | |
5427 | #else | |
5428 | /* Create the bit array serving as mask. */ | |
5429 | row_width = (img->width + 7) / 8; | |
5430 | mask_img = xmalloc (row_width * img->height); | |
5431 | bzero (mask_img, row_width * img->height); | |
5432 | ||
5433 | /* Create a memory device context for IMG->pixmap. */ | |
5434 | frame_dc = get_frame_dc (f); | |
5435 | ximg = CreateCompatibleDC (frame_dc); | |
5436 | release_frame_dc (f, frame_dc); | |
5437 | prev = SelectObject (ximg, img->pixmap); | |
5438 | #endif /* HAVE_NTGUI */ | |
5439 | ||
5440 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
5441 | take that as color. Otherwise, use the image's background color. */ | |
5442 | use_img_background = 1; | |
5443 | ||
5444 | if (CONSP (how)) | |
5445 | { | |
5446 | int rgb[3], i; | |
5447 | ||
5448 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
5449 | { | |
5450 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
5451 | how = XCDR (how); | |
5452 | } | |
5453 | ||
5454 | if (i == 3 && NILP (how)) | |
5455 | { | |
5456 | char color_name[30]; | |
5457 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
5458 | bg = ( | |
5459 | #ifdef HAVE_NTGUI | |
5460 | 0x00ffffff & /* Filter out palette info. */ | |
5461 | #endif /* HAVE_NTGUI */ | |
5462 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
5463 | use_img_background = 0; | |
5464 | } | |
5465 | } | |
5466 | ||
5467 | if (use_img_background) | |
6ac3c7bb | 5468 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
5469 | |
5470 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
5471 | from the background color bg. */ | |
5472 | #ifndef HAVE_NTGUI | |
5473 | for (y = 0; y < img->height; ++y) | |
5474 | for (x = 0; x < img->width; ++x) | |
5475 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg | |
9ecf6403 | 5476 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
4ef0d4d0 KS |
5477 | |
5478 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5479 | image_background_transparent (img, f, mask_img); | |
5480 | ||
5481 | /* Put mask_img into img->mask. */ | |
5482 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5483 | x_destroy_x_image (mask_img); | |
5484 | ||
5485 | #else | |
5486 | for (y = 0; y < img->height; ++y) | |
5487 | for (x = 0; x < img->width; ++x) | |
5488 | { | |
5489 | COLORREF p = GetPixel (ximg, x, y); | |
5490 | if (p != bg) | |
5491 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
5492 | } | |
5493 | ||
5494 | /* Create the mask image. */ | |
5495 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
5496 | mask_img); | |
5497 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5498 | SelectObject (ximg, img->mask); | |
5499 | image_background_transparent (img, f, ximg); | |
5500 | ||
5501 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
5502 | xfree (mask_img); | |
5503 | #endif /* HAVE_NTGUI */ | |
5504 | ||
5505 | Destroy_Image (ximg, prev); | |
5506 | ||
5507 | return 1; | |
5508 | } | |
5509 | ||
5510 | \f | |
5511 | /*********************************************************************** | |
5512 | PBM (mono, gray, color) | |
5513 | ***********************************************************************/ | |
5514 | ||
5515 | static int pbm_image_p P_ ((Lisp_Object object)); | |
5516 | static int pbm_load P_ ((struct frame *f, struct image *img)); | |
5517 | static int pbm_scan_number P_ ((unsigned char **, unsigned char *)); | |
5518 | ||
5519 | /* The symbol `pbm' identifying images of this type. */ | |
5520 | ||
5521 | Lisp_Object Qpbm; | |
5522 | ||
5523 | /* Indices of image specification fields in gs_format, below. */ | |
5524 | ||
5525 | enum pbm_keyword_index | |
5526 | { | |
5527 | PBM_TYPE, | |
5528 | PBM_FILE, | |
5529 | PBM_DATA, | |
5530 | PBM_ASCENT, | |
5531 | PBM_MARGIN, | |
5532 | PBM_RELIEF, | |
5533 | PBM_ALGORITHM, | |
5534 | PBM_HEURISTIC_MASK, | |
5535 | PBM_MASK, | |
5536 | PBM_FOREGROUND, | |
5537 | PBM_BACKGROUND, | |
5538 | PBM_LAST | |
5539 | }; | |
5540 | ||
5541 | /* Vector of image_keyword structures describing the format | |
5542 | of valid user-defined image specifications. */ | |
5543 | ||
5544 | static struct image_keyword pbm_format[PBM_LAST] = | |
5545 | { | |
5546 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5547 | {":file", IMAGE_STRING_VALUE, 0}, | |
5548 | {":data", IMAGE_STRING_VALUE, 0}, | |
5549 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5550 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5551 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5552 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5553 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5554 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5555 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
5556 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5557 | }; | |
5558 | ||
5559 | /* Structure describing the image type `pbm'. */ | |
5560 | ||
5561 | static struct image_type pbm_type = | |
5562 | { | |
5563 | &Qpbm, | |
5564 | pbm_image_p, | |
5565 | pbm_load, | |
5566 | x_clear_image, | |
5567 | NULL | |
5568 | }; | |
5569 | ||
5570 | ||
5571 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
5572 | ||
5573 | static int | |
5574 | pbm_image_p (object) | |
5575 | Lisp_Object object; | |
5576 | { | |
5577 | struct image_keyword fmt[PBM_LAST]; | |
5578 | ||
5579 | bcopy (pbm_format, fmt, sizeof fmt); | |
5580 | ||
5581 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
5582 | return 0; | |
5583 | ||
5584 | /* Must specify either :data or :file. */ | |
5585 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
5586 | } | |
5587 | ||
5588 | ||
5589 | /* Scan a decimal number from *S and return it. Advance *S while | |
5590 | reading the number. END is the end of the string. Value is -1 at | |
5591 | end of input. */ | |
5592 | ||
5593 | static int | |
5594 | pbm_scan_number (s, end) | |
5595 | unsigned char **s, *end; | |
5596 | { | |
5597 | int c = 0, val = -1; | |
5598 | ||
5599 | while (*s < end) | |
5600 | { | |
5601 | /* Skip white-space. */ | |
5602 | while (*s < end && (c = *(*s)++, isspace (c))) | |
5603 | ; | |
5604 | ||
5605 | if (c == '#') | |
5606 | { | |
5607 | /* Skip comment to end of line. */ | |
5608 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5609 | ; | |
5610 | } | |
5611 | else if (isdigit (c)) | |
5612 | { | |
5613 | /* Read decimal number. */ | |
5614 | val = c - '0'; | |
5615 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
5616 | val = 10 * val + c - '0'; | |
5617 | break; | |
5618 | } | |
5619 | else | |
5620 | break; | |
5621 | } | |
5622 | ||
5623 | return val; | |
5624 | } | |
5625 | ||
5626 | ||
5627 | #ifdef HAVE_NTGUI | |
5628 | #if 0 /* Unused. ++kfs */ | |
5629 | ||
5630 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5631 | with xmalloc holding FILE's contents. Value is null if an error | |
5632 | occurred. *SIZE is set to the size of the file. */ | |
5633 | ||
5634 | static char * | |
5635 | pbm_read_file (file, size) | |
5636 | Lisp_Object file; | |
5637 | int *size; | |
5638 | { | |
5639 | FILE *fp = NULL; | |
5640 | char *buf = NULL; | |
5641 | struct stat st; | |
5642 | ||
5643 | if (stat (SDATA (file), &st) == 0 | |
5644 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
5645 | && (buf = (char *) xmalloc (st.st_size), | |
5646 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5647 | { | |
5648 | *size = st.st_size; | |
5649 | fclose (fp); | |
5650 | } | |
5651 | else | |
5652 | { | |
5653 | if (fp) | |
5654 | fclose (fp); | |
5655 | if (buf) | |
5656 | { | |
5657 | xfree (buf); | |
5658 | buf = NULL; | |
5659 | } | |
5660 | } | |
5661 | ||
5662 | return buf; | |
5663 | } | |
5664 | #endif | |
5665 | #endif /* HAVE_NTGUI */ | |
5666 | ||
5667 | /* Load PBM image IMG for use on frame F. */ | |
5668 | ||
5669 | static int | |
5670 | pbm_load (f, img) | |
5671 | struct frame *f; | |
5672 | struct image *img; | |
5673 | { | |
5674 | int raw_p, x, y; | |
5675 | int width, height, max_color_idx = 0; | |
5676 | XImagePtr ximg; | |
5677 | Lisp_Object file, specified_file; | |
5678 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
5679 | struct gcpro gcpro1; | |
5680 | unsigned char *contents = NULL; | |
5681 | unsigned char *end, *p; | |
5682 | int size; | |
5683 | ||
5684 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5685 | file = Qnil; | |
5686 | GCPRO1 (file); | |
5687 | ||
5688 | if (STRINGP (specified_file)) | |
5689 | { | |
5690 | file = x_find_image_file (specified_file); | |
5691 | if (!STRINGP (file)) | |
5692 | { | |
5693 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
5694 | UNGCPRO; | |
5695 | return 0; | |
5696 | } | |
5697 | ||
5698 | contents = slurp_file (SDATA (file), &size); | |
5699 | if (contents == NULL) | |
5700 | { | |
5701 | image_error ("Error reading `%s'", file, Qnil); | |
5702 | UNGCPRO; | |
5703 | return 0; | |
5704 | } | |
5705 | ||
5706 | p = contents; | |
5707 | end = contents + size; | |
5708 | } | |
5709 | else | |
5710 | { | |
5711 | Lisp_Object data; | |
5712 | data = image_spec_value (img->spec, QCdata, NULL); | |
5713 | p = SDATA (data); | |
5714 | end = p + SBYTES (data); | |
5715 | } | |
5716 | ||
5717 | /* Check magic number. */ | |
5718 | if (end - p < 2 || *p++ != 'P') | |
5719 | { | |
5720 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5721 | error: | |
5722 | xfree (contents); | |
5723 | UNGCPRO; | |
5724 | return 0; | |
5725 | } | |
5726 | ||
5727 | switch (*p++) | |
5728 | { | |
5729 | case '1': | |
5730 | raw_p = 0, type = PBM_MONO; | |
5731 | break; | |
5732 | ||
5733 | case '2': | |
5734 | raw_p = 0, type = PBM_GRAY; | |
5735 | break; | |
5736 | ||
5737 | case '3': | |
5738 | raw_p = 0, type = PBM_COLOR; | |
5739 | break; | |
5740 | ||
5741 | case '4': | |
5742 | raw_p = 1, type = PBM_MONO; | |
5743 | break; | |
5744 | ||
5745 | case '5': | |
5746 | raw_p = 1, type = PBM_GRAY; | |
5747 | break; | |
5748 | ||
5749 | case '6': | |
5750 | raw_p = 1, type = PBM_COLOR; | |
5751 | break; | |
5752 | ||
5753 | default: | |
5754 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5755 | goto error; | |
5756 | } | |
5757 | ||
5758 | /* Read width, height, maximum color-component. Characters | |
5759 | starting with `#' up to the end of a line are ignored. */ | |
5760 | width = pbm_scan_number (&p, end); | |
5761 | height = pbm_scan_number (&p, end); | |
5762 | ||
5763 | if (type != PBM_MONO) | |
5764 | { | |
5765 | max_color_idx = pbm_scan_number (&p, end); | |
5766 | if (raw_p && max_color_idx > 255) | |
5767 | max_color_idx = 255; | |
5768 | } | |
5769 | ||
f1f25b99 | 5770 | if (!check_image_size (f, width, height) |
4ef0d4d0 KS |
5771 | || (type != PBM_MONO && max_color_idx < 0)) |
5772 | goto error; | |
5773 | ||
5774 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5775 | &ximg, &img->pixmap)) | |
5776 | goto error; | |
5777 | ||
5778 | /* Initialize the color hash table. */ | |
5779 | init_color_table (); | |
5780 | ||
5781 | if (type == PBM_MONO) | |
5782 | { | |
5783 | int c = 0, g; | |
5784 | struct image_keyword fmt[PBM_LAST]; | |
5785 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5786 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5787 | ||
5788 | /* Parse the image specification. */ | |
5789 | bcopy (pbm_format, fmt, sizeof fmt); | |
5790 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); | |
5791 | ||
5792 | /* Get foreground and background colors, maybe allocate colors. */ | |
5793 | if (fmt[PBM_FOREGROUND].count | |
5794 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5795 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5796 | if (fmt[PBM_BACKGROUND].count | |
5797 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5798 | { | |
5799 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5800 | img->background = bg; | |
5801 | img->background_valid = 1; | |
5802 | } | |
5803 | ||
5804 | for (y = 0; y < height; ++y) | |
5805 | for (x = 0; x < width; ++x) | |
5806 | { | |
5807 | if (raw_p) | |
5808 | { | |
5809 | if ((x & 7) == 0) | |
c295e710 CY |
5810 | { |
5811 | if (p >= end) | |
5812 | { | |
5813 | x_destroy_x_image (ximg); | |
5814 | x_clear_image (f, img); | |
5815 | image_error ("Invalid image size in image `%s'", | |
5816 | img->spec, Qnil); | |
5817 | goto error; | |
5818 | } | |
5819 | c = *p++; | |
5820 | } | |
4ef0d4d0 KS |
5821 | g = c & 0x80; |
5822 | c <<= 1; | |
5823 | } | |
5824 | else | |
5825 | g = pbm_scan_number (&p, end); | |
5826 | ||
5827 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5828 | } | |
5829 | } | |
5830 | else | |
5831 | { | |
fb0b0862 CY |
5832 | if (raw_p |
5833 | && ((type == PBM_GRAY) | |
5834 | ? (p + height * width > end) | |
5835 | : (p + 3 * height * width > end))) | |
39e653ea CY |
5836 | { |
5837 | x_destroy_x_image (ximg); | |
fb0b0862 | 5838 | x_clear_image (f, img); |
39e653ea CY |
5839 | image_error ("Invalid image size in image `%s'", |
5840 | img->spec, Qnil); | |
5841 | goto error; | |
5842 | } | |
5843 | ||
4ef0d4d0 KS |
5844 | for (y = 0; y < height; ++y) |
5845 | for (x = 0; x < width; ++x) | |
5846 | { | |
5847 | int r, g, b; | |
5848 | ||
5849 | if (type == PBM_GRAY) | |
5850 | r = g = b = raw_p ? *p++ : pbm_scan_number (&p, end); | |
5851 | else if (raw_p) | |
5852 | { | |
5853 | r = *p++; | |
5854 | g = *p++; | |
5855 | b = *p++; | |
5856 | } | |
5857 | else | |
5858 | { | |
5859 | r = pbm_scan_number (&p, end); | |
5860 | g = pbm_scan_number (&p, end); | |
5861 | b = pbm_scan_number (&p, end); | |
5862 | } | |
5863 | ||
5864 | if (r < 0 || g < 0 || b < 0) | |
5865 | { | |
5866 | x_destroy_x_image (ximg); | |
5867 | image_error ("Invalid pixel value in image `%s'", | |
5868 | img->spec, Qnil); | |
5869 | goto error; | |
5870 | } | |
5871 | ||
5872 | /* RGB values are now in the range 0..max_color_idx. | |
5873 | Scale this to the range 0..0xffff supported by X. */ | |
5874 | r = (double) r * 65535 / max_color_idx; | |
5875 | g = (double) g * 65535 / max_color_idx; | |
5876 | b = (double) b * 65535 / max_color_idx; | |
5877 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5878 | } | |
5879 | } | |
5880 | ||
5881 | #ifdef COLOR_TABLE_SUPPORT | |
5882 | /* Store in IMG->colors the colors allocated for the image, and | |
5883 | free the color table. */ | |
5884 | img->colors = colors_in_color_table (&img->ncolors); | |
5885 | free_color_table (); | |
5886 | #endif /* COLOR_TABLE_SUPPORT */ | |
5887 | ||
5888 | img->width = width; | |
5889 | img->height = height; | |
5890 | ||
5891 | /* Maybe fill in the background field while we have ximg handy. */ | |
5892 | ||
5893 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5894 | /* Casting avoids a GCC warning. */ |
5895 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5896 | |
5897 | /* Put the image into a pixmap. */ | |
5898 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5899 | x_destroy_x_image (ximg); | |
5900 | ||
5901 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5902 | img->width = width; |
4ef0d4d0 KS |
5903 | img->height = height; */ |
5904 | ||
5905 | UNGCPRO; | |
5906 | xfree (contents); | |
5907 | return 1; | |
5908 | } | |
5909 | ||
5910 | \f | |
5911 | /*********************************************************************** | |
5912 | PNG | |
5913 | ***********************************************************************/ | |
5914 | ||
5915 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
5916 | ||
5917 | /* Function prototypes. */ | |
5918 | ||
5919 | static int png_image_p P_ ((Lisp_Object object)); | |
5920 | static int png_load P_ ((struct frame *f, struct image *img)); | |
5921 | ||
5922 | /* The symbol `png' identifying images of this type. */ | |
5923 | ||
5924 | Lisp_Object Qpng; | |
5925 | ||
5926 | /* Indices of image specification fields in png_format, below. */ | |
5927 | ||
5928 | enum png_keyword_index | |
5929 | { | |
5930 | PNG_TYPE, | |
5931 | PNG_DATA, | |
5932 | PNG_FILE, | |
5933 | PNG_ASCENT, | |
5934 | PNG_MARGIN, | |
5935 | PNG_RELIEF, | |
5936 | PNG_ALGORITHM, | |
5937 | PNG_HEURISTIC_MASK, | |
5938 | PNG_MASK, | |
5939 | PNG_BACKGROUND, | |
5940 | PNG_LAST | |
5941 | }; | |
5942 | ||
5943 | /* Vector of image_keyword structures describing the format | |
5944 | of valid user-defined image specifications. */ | |
5945 | ||
5946 | static struct image_keyword png_format[PNG_LAST] = | |
5947 | { | |
5948 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5949 | {":data", IMAGE_STRING_VALUE, 0}, | |
5950 | {":file", IMAGE_STRING_VALUE, 0}, | |
5951 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5952 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5953 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5954 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5955 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5956 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5957 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5958 | }; | |
5959 | ||
5960 | /* Structure describing the image type `png'. */ | |
5961 | ||
5962 | static struct image_type png_type = | |
5963 | { | |
5964 | &Qpng, | |
5965 | png_image_p, | |
5966 | png_load, | |
5967 | x_clear_image, | |
5968 | NULL | |
5969 | }; | |
5970 | ||
5971 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5972 | ||
5973 | static int | |
5974 | png_image_p (object) | |
5975 | Lisp_Object object; | |
5976 | { | |
5977 | struct image_keyword fmt[PNG_LAST]; | |
5978 | bcopy (png_format, fmt, sizeof fmt); | |
5979 | ||
5980 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5981 | return 0; | |
5982 | ||
5983 | /* Must specify either the :data or :file keyword. */ | |
5984 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5985 | } | |
5986 | ||
5987 | #endif /* HAVE_PNG || MAC_OS */ | |
5988 | ||
5989 | ||
5990 | #ifdef HAVE_PNG | |
5991 | ||
5992 | #if defined HAVE_LIBPNG_PNG_H | |
5993 | # include <libpng/png.h> | |
5994 | #else | |
5995 | # include <png.h> | |
5996 | #endif | |
5997 | ||
5998 | #ifdef HAVE_NTGUI | |
5999 | /* PNG library details. */ | |
6000 | ||
6001 | DEF_IMGLIB_FN (png_get_io_ptr); | |
6002 | DEF_IMGLIB_FN (png_check_sig); | |
6003 | DEF_IMGLIB_FN (png_create_read_struct); | |
6004 | DEF_IMGLIB_FN (png_create_info_struct); | |
6005 | DEF_IMGLIB_FN (png_destroy_read_struct); | |
6006 | DEF_IMGLIB_FN (png_set_read_fn); | |
4ef0d4d0 KS |
6007 | DEF_IMGLIB_FN (png_set_sig_bytes); |
6008 | DEF_IMGLIB_FN (png_read_info); | |
6009 | DEF_IMGLIB_FN (png_get_IHDR); | |
6010 | DEF_IMGLIB_FN (png_get_valid); | |
6011 | DEF_IMGLIB_FN (png_set_strip_16); | |
6012 | DEF_IMGLIB_FN (png_set_expand); | |
6013 | DEF_IMGLIB_FN (png_set_gray_to_rgb); | |
6014 | DEF_IMGLIB_FN (png_set_background); | |
6015 | DEF_IMGLIB_FN (png_get_bKGD); | |
6016 | DEF_IMGLIB_FN (png_read_update_info); | |
6017 | DEF_IMGLIB_FN (png_get_channels); | |
6018 | DEF_IMGLIB_FN (png_get_rowbytes); | |
6019 | DEF_IMGLIB_FN (png_read_image); | |
6020 | DEF_IMGLIB_FN (png_read_end); | |
6021 | DEF_IMGLIB_FN (png_error); | |
6022 | ||
6023 | static int | |
0855eb52 | 6024 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6025 | { |
6026 | HMODULE library; | |
6027 | ||
4ef0d4d0 | 6028 | /* Try loading libpng under probable names. */ |
0855eb52 | 6029 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
6030 | return 0; |
6031 | ||
6032 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
6033 | LOAD_IMGLIB_FN (library, png_check_sig); | |
6034 | LOAD_IMGLIB_FN (library, png_create_read_struct); | |
6035 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
6036 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
6037 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
6038 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
6039 | LOAD_IMGLIB_FN (library, png_read_info); | |
6040 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
6041 | LOAD_IMGLIB_FN (library, png_get_valid); | |
6042 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
6043 | LOAD_IMGLIB_FN (library, png_set_expand); | |
6044 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
6045 | LOAD_IMGLIB_FN (library, png_set_background); | |
6046 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
6047 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
6048 | LOAD_IMGLIB_FN (library, png_get_channels); | |
6049 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
6050 | LOAD_IMGLIB_FN (library, png_read_image); | |
6051 | LOAD_IMGLIB_FN (library, png_read_end); | |
6052 | LOAD_IMGLIB_FN (library, png_error); | |
6053 | return 1; | |
6054 | } | |
6055 | #else | |
6056 | ||
6057 | #define fn_png_get_io_ptr png_get_io_ptr | |
6058 | #define fn_png_check_sig png_check_sig | |
6059 | #define fn_png_create_read_struct png_create_read_struct | |
6060 | #define fn_png_create_info_struct png_create_info_struct | |
6061 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
6062 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
6063 | #define fn_png_set_sig_bytes png_set_sig_bytes |
6064 | #define fn_png_read_info png_read_info | |
6065 | #define fn_png_get_IHDR png_get_IHDR | |
6066 | #define fn_png_get_valid png_get_valid | |
6067 | #define fn_png_set_strip_16 png_set_strip_16 | |
6068 | #define fn_png_set_expand png_set_expand | |
6069 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
6070 | #define fn_png_set_background png_set_background | |
6071 | #define fn_png_get_bKGD png_get_bKGD | |
6072 | #define fn_png_read_update_info png_read_update_info | |
6073 | #define fn_png_get_channels png_get_channels | |
6074 | #define fn_png_get_rowbytes png_get_rowbytes | |
6075 | #define fn_png_read_image png_read_image | |
6076 | #define fn_png_read_end png_read_end | |
6077 | #define fn_png_error png_error | |
6078 | ||
6079 | #endif /* HAVE_NTGUI */ | |
6080 | ||
6081 | /* Error and warning handlers installed when the PNG library | |
6082 | is initialized. */ | |
6083 | ||
6084 | static void | |
6085 | my_png_error (png_ptr, msg) | |
6086 | png_struct *png_ptr; | |
6087 | char *msg; | |
6088 | { | |
6089 | xassert (png_ptr != NULL); | |
6090 | image_error ("PNG error: %s", build_string (msg), Qnil); | |
6091 | longjmp (png_ptr->jmpbuf, 1); | |
6092 | } | |
6093 | ||
6094 | ||
6095 | static void | |
6096 | my_png_warning (png_ptr, msg) | |
6097 | png_struct *png_ptr; | |
6098 | char *msg; | |
6099 | { | |
6100 | xassert (png_ptr != NULL); | |
6101 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
6102 | } | |
6103 | ||
6104 | /* Memory source for PNG decoding. */ | |
6105 | ||
6106 | struct png_memory_storage | |
6107 | { | |
6108 | unsigned char *bytes; /* The data */ | |
6109 | size_t len; /* How big is it? */ | |
6110 | int index; /* Where are we? */ | |
6111 | }; | |
6112 | ||
6113 | ||
6114 | /* Function set as reader function when reading PNG image from memory. | |
6115 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
6116 | bytes from the input to DATA. */ | |
6117 | ||
6118 | static void | |
6119 | png_read_from_memory (png_ptr, data, length) | |
6120 | png_structp png_ptr; | |
6121 | png_bytep data; | |
6122 | png_size_t length; | |
6123 | { | |
6124 | struct png_memory_storage *tbr | |
6125 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
6126 | ||
6127 | if (length > tbr->len - tbr->index) | |
6128 | fn_png_error (png_ptr, "Read error"); | |
6129 | ||
6130 | bcopy (tbr->bytes + tbr->index, data, length); | |
6131 | tbr->index = tbr->index + length; | |
6132 | } | |
6133 | ||
b0da69a7 | 6134 | |
9a22a004 JB |
6135 | /* Function set as reader function when reading PNG image from a file. |
6136 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
6137 | bytes from the input to DATA. */ | |
6138 | ||
6139 | static void | |
6140 | png_read_from_file (png_ptr, data, length) | |
6141 | png_structp png_ptr; | |
6142 | png_bytep data; | |
6143 | png_size_t length; | |
6144 | { | |
6145 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
6146 | ||
6147 | if (fread (data, 1, length, fp) < length) | |
6148 | fn_png_error (png_ptr, "Read error"); | |
6149 | } | |
6150 | ||
6151 | ||
4ef0d4d0 KS |
6152 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
6153 | successful. */ | |
6154 | ||
6155 | static int | |
6156 | png_load (f, img) | |
6157 | struct frame *f; | |
6158 | struct image *img; | |
6159 | { | |
6160 | Lisp_Object file, specified_file; | |
6161 | Lisp_Object specified_data; | |
6162 | int x, y, i; | |
6163 | XImagePtr ximg, mask_img = NULL; | |
6164 | struct gcpro gcpro1; | |
6165 | png_struct *png_ptr = NULL; | |
6166 | png_info *info_ptr = NULL, *end_info = NULL; | |
6167 | FILE *volatile fp = NULL; | |
6168 | png_byte sig[8]; | |
6169 | png_byte * volatile pixels = NULL; | |
6170 | png_byte ** volatile rows = NULL; | |
6171 | png_uint_32 width, height; | |
6172 | int bit_depth, color_type, interlace_type; | |
6173 | png_byte channels; | |
6174 | png_uint_32 row_bytes; | |
6175 | int transparent_p; | |
6176 | double screen_gamma; | |
6177 | struct png_memory_storage tbr; /* Data to be read */ | |
6178 | ||
6179 | /* Find out what file to load. */ | |
6180 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6181 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
6182 | file = Qnil; | |
6183 | GCPRO1 (file); | |
6184 | ||
6185 | if (NILP (specified_data)) | |
6186 | { | |
6187 | file = x_find_image_file (specified_file); | |
6188 | if (!STRINGP (file)) | |
6189 | { | |
6190 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
6191 | UNGCPRO; | |
6192 | return 0; | |
6193 | } | |
6194 | ||
6195 | /* Open the image file. */ | |
6196 | fp = fopen (SDATA (file), "rb"); | |
6197 | if (!fp) | |
6198 | { | |
6199 | image_error ("Cannot open image file `%s'", file, Qnil); | |
6200 | UNGCPRO; | |
4ef0d4d0 KS |
6201 | return 0; |
6202 | } | |
6203 | ||
6204 | /* Check PNG signature. */ | |
6205 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
6206 | || !fn_png_check_sig (sig, sizeof sig)) | |
6207 | { | |
6208 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
6209 | UNGCPRO; | |
6210 | fclose (fp); | |
6211 | return 0; | |
6212 | } | |
6213 | } | |
6214 | else | |
6215 | { | |
6216 | /* Read from memory. */ | |
6217 | tbr.bytes = SDATA (specified_data); | |
6218 | tbr.len = SBYTES (specified_data); | |
6219 | tbr.index = 0; | |
6220 | ||
6221 | /* Check PNG signature. */ | |
6222 | if (tbr.len < sizeof sig | |
6223 | || !fn_png_check_sig (tbr.bytes, sizeof sig)) | |
6224 | { | |
6225 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
6226 | UNGCPRO; | |
6227 | return 0; | |
6228 | } | |
6229 | ||
6230 | /* Need to skip past the signature. */ | |
6231 | tbr.bytes += sizeof (sig); | |
6232 | } | |
6233 | ||
2e09fef1 EZ |
6234 | /* Initialize read and info structs for PNG lib. Casting return |
6235 | value avoids a GCC warning on W32. */ | |
6236 | png_ptr = (png_structp)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
6237 | NULL, my_png_error, | |
6238 | my_png_warning); | |
4ef0d4d0 KS |
6239 | if (!png_ptr) |
6240 | { | |
6241 | if (fp) fclose (fp); | |
6242 | UNGCPRO; | |
6243 | return 0; | |
6244 | } | |
6245 | ||
2e09fef1 EZ |
6246 | /* Casting return value avoids a GCC warning on W32. */ |
6247 | info_ptr = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6248 | if (!info_ptr) |
6249 | { | |
6250 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
6251 | if (fp) fclose (fp); | |
6252 | UNGCPRO; | |
6253 | return 0; | |
6254 | } | |
6255 | ||
2e09fef1 EZ |
6256 | /* Casting return value avoids a GCC warning on W32. */ |
6257 | end_info = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6258 | if (!end_info) |
6259 | { | |
6260 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
6261 | if (fp) fclose (fp); | |
6262 | UNGCPRO; | |
6263 | return 0; | |
6264 | } | |
6265 | ||
6266 | /* Set error jump-back. We come back here when the PNG library | |
6267 | detects an error. */ | |
6268 | if (setjmp (png_ptr->jmpbuf)) | |
6269 | { | |
6270 | error: | |
6271 | if (png_ptr) | |
6272 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6273 | xfree (pixels); | |
6274 | xfree (rows); | |
6275 | if (fp) fclose (fp); | |
6276 | UNGCPRO; | |
6277 | return 0; | |
6278 | } | |
6279 | ||
6280 | /* Read image info. */ | |
6281 | if (!NILP (specified_data)) | |
6282 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
6283 | else | |
9a22a004 | 6284 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
6285 | |
6286 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
6287 | fn_png_read_info (png_ptr, info_ptr); | |
6288 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
6289 | &interlace_type, NULL, NULL); | |
6290 | ||
f1f25b99 CY |
6291 | if (!check_image_size (f, width, height)) |
6292 | goto error; | |
6293 | ||
4ef0d4d0 KS |
6294 | /* If image contains simply transparency data, we prefer to |
6295 | construct a clipping mask. */ | |
6296 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
6297 | transparent_p = 1; | |
6298 | else | |
6299 | transparent_p = 0; | |
6300 | ||
6301 | /* This function is easier to write if we only have to handle | |
6302 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
6303 | transform other formats into that format. */ | |
6304 | ||
6305 | /* Strip more than 8 bits per channel. */ | |
6306 | if (bit_depth == 16) | |
6307 | fn_png_set_strip_16 (png_ptr); | |
6308 | ||
6309 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
6310 | if available. */ | |
6311 | fn_png_set_expand (png_ptr); | |
6312 | ||
6313 | /* Convert grayscale images to RGB. */ | |
6314 | if (color_type == PNG_COLOR_TYPE_GRAY | |
6315 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
6316 | fn_png_set_gray_to_rgb (png_ptr); | |
6317 | ||
6318 | screen_gamma = (f->gamma ? 1 / f->gamma / 0.45455 : 2.2); | |
6319 | ||
6320 | #if 0 /* Avoid double gamma correction for PNG images. */ | |
6321 | { /* Tell the PNG lib to handle gamma correction for us. */ | |
6322 | int intent; | |
6323 | double image_gamma; | |
6324 | #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED) | |
6325 | if (png_get_sRGB (png_ptr, info_ptr, &intent)) | |
6326 | /* The libpng documentation says this is right in this case. */ | |
6327 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6328 | else | |
6329 | #endif | |
6330 | if (png_get_gAMA (png_ptr, info_ptr, &image_gamma)) | |
6331 | /* Image contains gamma information. */ | |
6332 | png_set_gamma (png_ptr, screen_gamma, image_gamma); | |
6333 | else | |
6334 | /* Use the standard default for the image gamma. */ | |
6335 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6336 | } | |
6337 | #endif /* if 0 */ | |
6338 | ||
6339 | /* Handle alpha channel by combining the image with a background | |
6340 | color. Do this only if a real alpha channel is supplied. For | |
6341 | simple transparency, we prefer a clipping mask. */ | |
6342 | if (!transparent_p) | |
6343 | { | |
6344 | png_color_16 *image_bg; | |
6345 | Lisp_Object specified_bg | |
6346 | = image_spec_value (img->spec, QCbackground, NULL); | |
6347 | ||
6348 | if (STRINGP (specified_bg)) | |
6349 | /* The user specified `:background', use that. */ | |
6350 | { | |
6351 | /* W32 version incorrectly used COLORREF here!! ++kfs */ | |
6352 | XColor color; | |
6353 | if (x_defined_color (f, SDATA (specified_bg), &color, 0)) | |
6354 | { | |
6355 | png_color_16 user_bg; | |
6356 | ||
6357 | bzero (&user_bg, sizeof user_bg); | |
1f026899 KS |
6358 | user_bg.red = color.red >> 8; |
6359 | user_bg.green = color.green >> 8; | |
6360 | user_bg.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6361 | |
6362 | fn_png_set_background (png_ptr, &user_bg, | |
6363 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6364 | } | |
6365 | } | |
465d8f27 | 6366 | /* The commented-out code checked if the png specifies a default |
8198352b CY |
6367 | background color, and uses that. Since we use the current |
6368 | frame background, it is OK for us to ignore this. | |
465d8f27 | 6369 | |
4ef0d4d0 | 6370 | else if (fn_png_get_bKGD (png_ptr, info_ptr, &image_bg)) |
4ef0d4d0 KS |
6371 | fn_png_set_background (png_ptr, image_bg, |
6372 | PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); | |
465d8f27 | 6373 | */ |
4ef0d4d0 KS |
6374 | else |
6375 | { | |
6376 | /* Image does not contain a background color with which | |
6377 | to combine the image data via an alpha channel. Use | |
6378 | the frame's background instead. */ | |
6379 | #ifdef HAVE_X_WINDOWS | |
6380 | XColor color; | |
6381 | png_color_16 frame_background; | |
6382 | ||
6383 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
6384 | x_query_color (f, &color); | |
6385 | ||
6386 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6387 | frame_background.red = color.red >> 8; |
6388 | frame_background.green = color.green >> 8; | |
6389 | frame_background.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6390 | #endif /* HAVE_X_WINDOWS */ |
6391 | ||
6392 | #ifdef HAVE_NTGUI | |
6393 | COLORREF color; | |
6394 | png_color_16 frame_background; | |
6395 | color = FRAME_BACKGROUND_PIXEL (f); | |
6396 | #if 0 /* W32 TODO : Colormap support. */ | |
6397 | x_query_color (f, &color); | |
6398 | #endif | |
6399 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6400 | frame_background.red = GetRValue (color); |
6401 | frame_background.green = GetGValue (color); | |
6402 | frame_background.blue = GetBValue (color); | |
4ef0d4d0 KS |
6403 | #endif /* HAVE_NTGUI */ |
6404 | ||
6405 | #ifdef MAC_OS | |
6406 | unsigned long color; | |
6407 | png_color_16 frame_background; | |
6408 | color = FRAME_BACKGROUND_PIXEL (f); | |
6409 | #if 0 /* MAC/W32 TODO : Colormap support. */ | |
6410 | x_query_color (f, &color); | |
6411 | #endif | |
6412 | bzero (&frame_background, sizeof frame_background); | |
6413 | frame_background.red = RED_FROM_ULONG (color); | |
6414 | frame_background.green = GREEN_FROM_ULONG (color); | |
6415 | frame_background.blue = BLUE_FROM_ULONG (color); | |
6416 | #endif /* MAC_OS */ | |
6417 | ||
6418 | fn_png_set_background (png_ptr, &frame_background, | |
6419 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6420 | } | |
6421 | } | |
6422 | ||
6423 | /* Update info structure. */ | |
6424 | fn_png_read_update_info (png_ptr, info_ptr); | |
6425 | ||
6426 | /* Get number of channels. Valid values are 1 for grayscale images | |
6427 | and images with a palette, 2 for grayscale images with transparency | |
6428 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
6429 | images with alpha channel, i.e. RGBA. If conversions above were | |
6430 | sufficient we should only have 3 or 4 channels here. */ | |
6431 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
6432 | xassert (channels == 3 || channels == 4); | |
6433 | ||
6434 | /* Number of bytes needed for one row of the image. */ | |
6435 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
6436 | ||
6437 | /* Allocate memory for the image. */ | |
6438 | pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels); | |
6439 | rows = (png_byte **) xmalloc (height * sizeof *rows); | |
6440 | for (i = 0; i < height; ++i) | |
6441 | rows[i] = pixels + i * row_bytes; | |
6442 | ||
6443 | /* Read the entire image. */ | |
6444 | fn_png_read_image (png_ptr, rows); | |
6445 | fn_png_read_end (png_ptr, info_ptr); | |
6446 | if (fp) | |
6447 | { | |
6448 | fclose (fp); | |
6449 | fp = NULL; | |
6450 | } | |
6451 | ||
6452 | /* Create the X image and pixmap. */ | |
6453 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
6454 | &img->pixmap)) | |
6455 | goto error; | |
6456 | ||
6457 | /* Create an image and pixmap serving as mask if the PNG image | |
6458 | contains an alpha channel. */ | |
6459 | if (channels == 4 | |
6460 | && !transparent_p | |
6461 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
6462 | &mask_img, &img->mask)) | |
6463 | { | |
6464 | x_destroy_x_image (ximg); | |
6465 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
6466 | img->pixmap = NO_PIXMAP; | |
6467 | goto error; | |
6468 | } | |
6469 | ||
6470 | /* Fill the X image and mask from PNG data. */ | |
6471 | init_color_table (); | |
6472 | ||
6473 | for (y = 0; y < height; ++y) | |
6474 | { | |
6475 | png_byte *p = rows[y]; | |
6476 | ||
6477 | for (x = 0; x < width; ++x) | |
6478 | { | |
6479 | unsigned r, g, b; | |
6480 | ||
6481 | r = *p++ << 8; | |
6482 | g = *p++ << 8; | |
6483 | b = *p++ << 8; | |
6484 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
6485 | /* An alpha channel, aka mask channel, associates variable | |
6486 | transparency with an image. Where other image formats | |
6487 | support binary transparency---fully transparent or fully | |
6488 | opaque---PNG allows up to 254 levels of partial transparency. | |
6489 | The PNG library implements partial transparency by combining | |
6490 | the image with a specified background color. | |
6491 | ||
6492 | I'm not sure how to handle this here nicely: because the | |
6493 | background on which the image is displayed may change, for | |
6494 | real alpha channel support, it would be necessary to create | |
6495 | a new image for each possible background. | |
6496 | ||
6497 | What I'm doing now is that a mask is created if we have | |
6498 | boolean transparency information. Otherwise I'm using | |
6499 | the frame's background color to combine the image with. */ | |
6500 | ||
6501 | if (channels == 4) | |
6502 | { | |
6503 | if (mask_img) | |
9ecf6403 | 6504 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
6505 | ++p; |
6506 | } | |
6507 | } | |
6508 | } | |
6509 | ||
6510 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
6511 | /* Set IMG's background color from the PNG image, unless the user | |
6512 | overrode it. */ | |
6513 | { | |
6514 | png_color_16 *bg; | |
6515 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
6516 | { | |
6517 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
6518 | img->background_valid = 1; | |
6519 | } | |
6520 | } | |
6521 | ||
6522 | #ifdef COLOR_TABLE_SUPPORT | |
6523 | /* Remember colors allocated for this image. */ | |
6524 | img->colors = colors_in_color_table (&img->ncolors); | |
6525 | free_color_table (); | |
6526 | #endif /* COLOR_TABLE_SUPPORT */ | |
6527 | ||
6528 | /* Clean up. */ | |
6529 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6530 | xfree (rows); | |
6531 | xfree (pixels); | |
6532 | ||
6533 | img->width = width; | |
6534 | img->height = height; | |
6535 | ||
2e09fef1 EZ |
6536 | /* Maybe fill in the background field while we have ximg handy. |
6537 | Casting avoids a GCC warning. */ | |
6538 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6539 | |
6540 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6541 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6542 | x_destroy_x_image (ximg); | |
6543 | ||
6544 | /* Same for the mask. */ | |
6545 | if (mask_img) | |
6546 | { | |
2e09fef1 EZ |
6547 | /* Fill in the background_transparent field while we have the |
6548 | mask handy. Casting avoids a GCC warning. */ | |
6549 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
6550 | |
6551 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
6552 | x_destroy_x_image (mask_img); | |
6553 | } | |
6554 | ||
6555 | UNGCPRO; | |
6556 | return 1; | |
6557 | } | |
6558 | ||
6559 | #else /* HAVE_PNG */ | |
6560 | ||
6561 | #ifdef MAC_OS | |
6562 | static int | |
6563 | png_load (f, img) | |
6564 | struct frame *f; | |
6565 | struct image *img; | |
6566 | { | |
6567 | #ifdef MAC_OSX | |
6568 | if (MyCGImageCreateWithPNGDataProvider) | |
6569 | return image_load_quartz2d (f, img, 1); | |
6570 | else | |
6571 | #endif | |
6572 | return image_load_quicktime (f, img, kQTFileTypePNG); | |
6573 | } | |
6574 | #endif /* MAC_OS */ | |
6575 | ||
6576 | #endif /* !HAVE_PNG */ | |
6577 | ||
6578 | ||
6579 | \f | |
6580 | /*********************************************************************** | |
6581 | JPEG | |
6582 | ***********************************************************************/ | |
6583 | ||
6584 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
6585 | ||
6586 | static int jpeg_image_p P_ ((Lisp_Object object)); | |
6587 | static int jpeg_load P_ ((struct frame *f, struct image *img)); | |
6588 | ||
6589 | /* The symbol `jpeg' identifying images of this type. */ | |
6590 | ||
6591 | Lisp_Object Qjpeg; | |
6592 | ||
6593 | /* Indices of image specification fields in gs_format, below. */ | |
6594 | ||
6595 | enum jpeg_keyword_index | |
6596 | { | |
6597 | JPEG_TYPE, | |
6598 | JPEG_DATA, | |
6599 | JPEG_FILE, | |
6600 | JPEG_ASCENT, | |
6601 | JPEG_MARGIN, | |
6602 | JPEG_RELIEF, | |
6603 | JPEG_ALGORITHM, | |
6604 | JPEG_HEURISTIC_MASK, | |
6605 | JPEG_MASK, | |
6606 | JPEG_BACKGROUND, | |
6607 | JPEG_LAST | |
6608 | }; | |
6609 | ||
6610 | /* Vector of image_keyword structures describing the format | |
6611 | of valid user-defined image specifications. */ | |
6612 | ||
6613 | static struct image_keyword jpeg_format[JPEG_LAST] = | |
6614 | { | |
6615 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6616 | {":data", IMAGE_STRING_VALUE, 0}, | |
6617 | {":file", IMAGE_STRING_VALUE, 0}, | |
6618 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6619 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6620 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6621 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6622 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6623 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6624 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6625 | }; | |
6626 | ||
6627 | /* Structure describing the image type `jpeg'. */ | |
6628 | ||
6629 | static struct image_type jpeg_type = | |
6630 | { | |
6631 | &Qjpeg, | |
6632 | jpeg_image_p, | |
6633 | jpeg_load, | |
6634 | x_clear_image, | |
6635 | NULL | |
6636 | }; | |
6637 | ||
6638 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6639 | ||
6640 | static int | |
6641 | jpeg_image_p (object) | |
6642 | Lisp_Object object; | |
6643 | { | |
6644 | struct image_keyword fmt[JPEG_LAST]; | |
6645 | ||
6646 | bcopy (jpeg_format, fmt, sizeof fmt); | |
6647 | ||
6648 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6649 | return 0; | |
6650 | ||
6651 | /* Must specify either the :data or :file keyword. */ | |
6652 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6653 | } | |
6654 | ||
6655 | #endif /* HAVE_JPEG || MAC_OS */ | |
6656 | ||
6657 | #ifdef HAVE_JPEG | |
6658 | ||
6659 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6660 | jconfig.h. */ | |
6661 | #ifdef HAVE_STDLIB_H | |
6662 | #define HAVE_STDLIB_H_1 | |
6663 | #undef HAVE_STDLIB_H | |
6664 | #endif /* HAVE_STLIB_H */ | |
6665 | ||
66354420 | 6666 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6667 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6668 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6669 | #define __WIN32__ 1 |
6670 | #endif | |
6671 | ||
4ef0d4d0 KS |
6672 | #include <jpeglib.h> |
6673 | #include <jerror.h> | |
6674 | #include <setjmp.h> | |
6675 | ||
6676 | #ifdef HAVE_STLIB_H_1 | |
6677 | #define HAVE_STDLIB_H 1 | |
6678 | #endif | |
6679 | ||
6680 | #ifdef HAVE_NTGUI | |
6681 | ||
6682 | /* JPEG library details. */ | |
6683 | DEF_IMGLIB_FN (jpeg_CreateDecompress); | |
6684 | DEF_IMGLIB_FN (jpeg_start_decompress); | |
6685 | DEF_IMGLIB_FN (jpeg_finish_decompress); | |
6686 | DEF_IMGLIB_FN (jpeg_destroy_decompress); | |
6687 | DEF_IMGLIB_FN (jpeg_read_header); | |
6688 | DEF_IMGLIB_FN (jpeg_read_scanlines); | |
4ef0d4d0 KS |
6689 | DEF_IMGLIB_FN (jpeg_std_error); |
6690 | DEF_IMGLIB_FN (jpeg_resync_to_restart); | |
6691 | ||
6692 | static int | |
0855eb52 | 6693 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6694 | { |
6695 | HMODULE library; | |
6696 | ||
0855eb52 | 6697 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6698 | return 0; |
6699 | ||
6700 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6701 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6702 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6703 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6704 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6705 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6706 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6707 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6708 | return 1; | |
6709 | } | |
6710 | ||
6711 | /* Wrapper since we can't directly assign the function pointer | |
6712 | to another function pointer that was declared more completely easily. */ | |
6713 | static boolean | |
6714 | jpeg_resync_to_restart_wrapper(cinfo, desired) | |
6715 | j_decompress_ptr cinfo; | |
6716 | int desired; | |
6717 | { | |
6718 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6719 | } | |
6720 | ||
6721 | #else | |
6722 | ||
6723 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a) | |
6724 | #define fn_jpeg_start_decompress jpeg_start_decompress | |
6725 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6726 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6727 | #define fn_jpeg_read_header jpeg_read_header | |
6728 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6729 | #define fn_jpeg_std_error jpeg_std_error |
6730 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6731 | ||
6732 | #endif /* HAVE_NTGUI */ | |
6733 | ||
6734 | struct my_jpeg_error_mgr | |
6735 | { | |
6736 | struct jpeg_error_mgr pub; | |
6737 | jmp_buf setjmp_buffer; | |
6738 | }; | |
6739 | ||
6740 | ||
6741 | static void | |
6742 | my_error_exit (cinfo) | |
6743 | j_common_ptr cinfo; | |
6744 | { | |
6745 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6746 | longjmp (mgr->setjmp_buffer, 1); | |
6747 | } | |
6748 | ||
6749 | ||
6750 | /* Init source method for JPEG data source manager. Called by | |
6751 | jpeg_read_header() before any data is actually read. See | |
6752 | libjpeg.doc from the JPEG lib distribution. */ | |
6753 | ||
6754 | static void | |
b25a72ab JB |
6755 | our_common_init_source (cinfo) |
6756 | j_decompress_ptr cinfo; | |
6757 | { | |
6758 | } | |
6759 | ||
6760 | ||
6761 | /* Method to terminate data source. Called by | |
6762 | jpeg_finish_decompress() after all data has been processed. */ | |
6763 | ||
6764 | static void | |
6765 | our_common_term_source (cinfo) | |
4ef0d4d0 KS |
6766 | j_decompress_ptr cinfo; |
6767 | { | |
6768 | } | |
6769 | ||
6770 | ||
6771 | /* Fill input buffer method for JPEG data source manager. Called | |
6772 | whenever more data is needed. We read the whole image in one step, | |
6773 | so this only adds a fake end of input marker at the end. */ | |
6774 | ||
6775 | static boolean | |
b25a72ab | 6776 | our_memory_fill_input_buffer (cinfo) |
4ef0d4d0 KS |
6777 | j_decompress_ptr cinfo; |
6778 | { | |
6779 | /* Insert a fake EOI marker. */ | |
6780 | struct jpeg_source_mgr *src = cinfo->src; | |
6781 | static JOCTET buffer[2]; | |
6782 | ||
6783 | buffer[0] = (JOCTET) 0xFF; | |
6784 | buffer[1] = (JOCTET) JPEG_EOI; | |
6785 | ||
6786 | src->next_input_byte = buffer; | |
6787 | src->bytes_in_buffer = 2; | |
e0e30823 | 6788 | return 1; |
4ef0d4d0 KS |
6789 | } |
6790 | ||
6791 | ||
6792 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6793 | is the JPEG data source manager. */ | |
6794 | ||
6795 | static void | |
b25a72ab | 6796 | our_memory_skip_input_data (cinfo, num_bytes) |
4ef0d4d0 KS |
6797 | j_decompress_ptr cinfo; |
6798 | long num_bytes; | |
6799 | { | |
6800 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6801 | ||
6802 | if (src) | |
6803 | { | |
6804 | if (num_bytes > src->bytes_in_buffer) | |
6805 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6806 | ||
6807 | src->bytes_in_buffer -= num_bytes; | |
6808 | src->next_input_byte += num_bytes; | |
6809 | } | |
6810 | } | |
6811 | ||
6812 | ||
4ef0d4d0 KS |
6813 | /* Set up the JPEG lib for reading an image from DATA which contains |
6814 | LEN bytes. CINFO is the decompression info structure created for | |
6815 | reading the image. */ | |
6816 | ||
6817 | static void | |
6818 | jpeg_memory_src (cinfo, data, len) | |
6819 | j_decompress_ptr cinfo; | |
6820 | JOCTET *data; | |
6821 | unsigned int len; | |
6822 | { | |
6823 | struct jpeg_source_mgr *src; | |
6824 | ||
6825 | if (cinfo->src == NULL) | |
6826 | { | |
6827 | /* First time for this JPEG object? */ | |
6828 | cinfo->src = (struct jpeg_source_mgr *) | |
6829 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6830 | sizeof (struct jpeg_source_mgr)); | |
6831 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6832 | src->next_input_byte = data; | |
6833 | } | |
6834 | ||
6835 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6836 | src->init_source = our_common_init_source; |
6837 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6838 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6839 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6840 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6841 | src->bytes_in_buffer = len; |
6842 | src->next_input_byte = data; | |
6843 | } | |
6844 | ||
6845 | ||
b25a72ab JB |
6846 | struct jpeg_stdio_mgr |
6847 | { | |
6848 | struct jpeg_source_mgr mgr; | |
6849 | boolean finished; | |
6850 | FILE *file; | |
6851 | JOCTET *buffer; | |
6852 | }; | |
6853 | ||
6854 | ||
6855 | /* Size of buffer to read JPEG from file. | |
6856 | Not too big, as we want to use alloc_small. */ | |
6857 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6858 | ||
6859 | ||
6860 | /* Fill input buffer method for JPEG data source manager. Called | |
6861 | whenever more data is needed. The data is read from a FILE *. */ | |
6862 | ||
6863 | static boolean | |
6864 | our_stdio_fill_input_buffer (cinfo) | |
6865 | j_decompress_ptr cinfo; | |
6866 | { | |
6867 | struct jpeg_stdio_mgr *src; | |
6868 | ||
6869 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6870 | if (!src->finished) | |
6871 | { | |
6872 | size_t bytes; | |
6873 | ||
6874 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6875 | if (bytes > 0) | |
6876 | src->mgr.bytes_in_buffer = bytes; | |
6877 | else | |
6878 | { | |
6879 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6880 | src->finished = 1; | |
6881 | src->buffer[0] = (JOCTET) 0xFF; | |
6882 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6883 | src->mgr.bytes_in_buffer = 2; | |
6884 | } | |
6885 | src->mgr.next_input_byte = src->buffer; | |
6886 | } | |
6887 | ||
6888 | return 1; | |
6889 | } | |
6890 | ||
6891 | ||
6892 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6893 | is the JPEG data source manager. */ | |
6894 | ||
6895 | static void | |
6896 | our_stdio_skip_input_data (cinfo, num_bytes) | |
6897 | j_decompress_ptr cinfo; | |
6898 | long num_bytes; | |
6899 | { | |
6900 | struct jpeg_stdio_mgr *src; | |
6901 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6902 | ||
6903 | while (num_bytes > 0 && !src->finished) | |
6904 | { | |
6905 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6906 | { | |
6907 | src->mgr.bytes_in_buffer -= num_bytes; | |
6908 | src->mgr.next_input_byte += num_bytes; | |
6909 | break; | |
6910 | } | |
6911 | else | |
6912 | { | |
6913 | num_bytes -= src->mgr.bytes_in_buffer; | |
6914 | src->mgr.bytes_in_buffer = 0; | |
6915 | src->mgr.next_input_byte = NULL; | |
6916 | ||
6917 | our_stdio_fill_input_buffer (cinfo); | |
6918 | } | |
6919 | } | |
6920 | } | |
6921 | ||
6922 | ||
6923 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6924 | CINFO is the decompression info structure created for | |
6925 | reading the image. */ | |
6926 | ||
6927 | static void | |
6928 | jpeg_file_src (cinfo, fp) | |
6929 | j_decompress_ptr cinfo; | |
6930 | FILE *fp; | |
6931 | { | |
6932 | struct jpeg_stdio_mgr *src; | |
6933 | ||
6934 | if (cinfo->src != NULL) | |
6935 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6936 | else | |
6937 | { | |
6938 | /* First time for this JPEG object? */ | |
6939 | cinfo->src = (struct jpeg_source_mgr *) | |
6940 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6941 | sizeof (struct jpeg_stdio_mgr)); | |
6942 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6943 | src->buffer = (JOCTET *) | |
6944 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6945 | JPEG_STDIO_BUFFER_SIZE); | |
6946 | } | |
6947 | ||
6948 | src->file = fp; | |
6949 | src->finished = 0; | |
6950 | src->mgr.init_source = our_common_init_source; | |
6951 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6952 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6953 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6954 | src->mgr.term_source = our_common_term_source; | |
6955 | src->mgr.bytes_in_buffer = 0; | |
6956 | src->mgr.next_input_byte = NULL; | |
6957 | } | |
6958 | ||
6959 | ||
4ef0d4d0 KS |
6960 | /* Load image IMG for use on frame F. Patterned after example.c |
6961 | from the JPEG lib. */ | |
6962 | ||
6963 | static int | |
6964 | jpeg_load (f, img) | |
6965 | struct frame *f; | |
6966 | struct image *img; | |
6967 | { | |
6968 | struct jpeg_decompress_struct cinfo; | |
6969 | struct my_jpeg_error_mgr mgr; | |
6970 | Lisp_Object file, specified_file; | |
6971 | Lisp_Object specified_data; | |
6972 | FILE * volatile fp = NULL; | |
6973 | JSAMPARRAY buffer; | |
6974 | int row_stride, x, y; | |
6975 | XImagePtr ximg = NULL; | |
6976 | int rc; | |
6977 | unsigned long *colors; | |
6978 | int width, height; | |
6979 | struct gcpro gcpro1; | |
6980 | ||
6981 | /* Open the JPEG file. */ | |
6982 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6983 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
6984 | file = Qnil; | |
6985 | GCPRO1 (file); | |
6986 | ||
6987 | if (NILP (specified_data)) | |
6988 | { | |
6989 | file = x_find_image_file (specified_file); | |
6990 | if (!STRINGP (file)) | |
6991 | { | |
6992 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
6993 | UNGCPRO; | |
6994 | return 0; | |
6995 | } | |
6996 | ||
6997 | fp = fopen (SDATA (file), "rb"); | |
6998 | if (fp == NULL) | |
6999 | { | |
7000 | image_error ("Cannot open `%s'", file, Qnil); | |
7001 | UNGCPRO; | |
7002 | return 0; | |
7003 | } | |
7004 | } | |
7005 | ||
7006 | /* Customize libjpeg's error handling to call my_error_exit when an | |
2e09fef1 EZ |
7007 | error is detected. This function will perform a longjmp. |
7008 | Casting return value avoids a GCC warning on W32. */ | |
7009 | cinfo.err = (struct jpeg_error_mgr *)fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
7010 | mgr.pub.error_exit = my_error_exit; |
7011 | ||
7012 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
7013 | { | |
7014 | if (rc == 1) | |
7015 | { | |
7016 | /* Called from my_error_exit. Display a JPEG error. */ | |
7017 | char buffer[JMSG_LENGTH_MAX]; | |
7018 | cinfo.err->format_message ((j_common_ptr) &cinfo, buffer); | |
7019 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
7020 | build_string (buffer)); | |
7021 | } | |
7022 | ||
7023 | /* Close the input file and destroy the JPEG object. */ | |
7024 | if (fp) | |
7025 | fclose ((FILE *) fp); | |
7026 | fn_jpeg_destroy_decompress (&cinfo); | |
7027 | ||
7028 | /* If we already have an XImage, free that. */ | |
7029 | x_destroy_x_image (ximg); | |
7030 | ||
7031 | /* Free pixmap and colors. */ | |
7032 | x_clear_image (f, img); | |
7033 | ||
7034 | UNGCPRO; | |
7035 | return 0; | |
7036 | } | |
7037 | ||
7038 | /* Create the JPEG decompression object. Let it read from fp. | |
7039 | Read the JPEG image header. */ | |
7040 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
7041 | ||
7042 | if (NILP (specified_data)) | |
b25a72ab | 7043 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
7044 | else |
7045 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
7046 | SBYTES (specified_data)); | |
7047 | ||
e0e30823 | 7048 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
7049 | |
7050 | /* Customize decompression so that color quantization will be used. | |
7051 | Start decompression. */ | |
e0e30823 | 7052 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
7053 | fn_jpeg_start_decompress (&cinfo); |
7054 | width = img->width = cinfo.output_width; | |
7055 | height = img->height = cinfo.output_height; | |
7056 | ||
f1f25b99 CY |
7057 | if (!check_image_size (f, width, height)) |
7058 | { | |
7059 | image_error ("Invalid image size", Qnil, Qnil); | |
7060 | longjmp (mgr.setjmp_buffer, 2); | |
7061 | } | |
7062 | ||
4ef0d4d0 KS |
7063 | /* Create X image and pixmap. */ |
7064 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7065 | longjmp (mgr.setjmp_buffer, 2); | |
7066 | ||
7067 | /* Allocate colors. When color quantization is used, | |
7068 | cinfo.actual_number_of_colors has been set with the number of | |
7069 | colors generated, and cinfo.colormap is a two-dimensional array | |
7070 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
7071 | No more than 255 colors will be generated. */ | |
7072 | { | |
7073 | int i, ir, ig, ib; | |
7074 | ||
7075 | if (cinfo.out_color_components > 2) | |
7076 | ir = 0, ig = 1, ib = 2; | |
7077 | else if (cinfo.out_color_components > 1) | |
7078 | ir = 0, ig = 1, ib = 0; | |
7079 | else | |
7080 | ir = 0, ig = 0, ib = 0; | |
7081 | ||
7082 | /* Use the color table mechanism because it handles colors that | |
7083 | cannot be allocated nicely. Such colors will be replaced with | |
7084 | a default color, and we don't have to care about which colors | |
7085 | can be freed safely, and which can't. */ | |
7086 | init_color_table (); | |
7087 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
7088 | * sizeof *colors); | |
7089 | ||
7090 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
7091 | { | |
7092 | /* Multiply RGB values with 255 because X expects RGB values | |
7093 | in the range 0..0xffff. */ | |
7094 | int r = cinfo.colormap[ir][i] << 8; | |
7095 | int g = cinfo.colormap[ig][i] << 8; | |
7096 | int b = cinfo.colormap[ib][i] << 8; | |
7097 | colors[i] = lookup_rgb_color (f, r, g, b); | |
7098 | } | |
7099 | ||
7100 | #ifdef COLOR_TABLE_SUPPORT | |
7101 | /* Remember those colors actually allocated. */ | |
7102 | img->colors = colors_in_color_table (&img->ncolors); | |
7103 | free_color_table (); | |
7104 | #endif /* COLOR_TABLE_SUPPORT */ | |
7105 | } | |
7106 | ||
7107 | /* Read pixels. */ | |
7108 | row_stride = width * cinfo.output_components; | |
7109 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
7110 | row_stride, 1); | |
7111 | for (y = 0; y < height; ++y) | |
7112 | { | |
7113 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
7114 | for (x = 0; x < cinfo.output_width; ++x) | |
7115 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
7116 | } | |
7117 | ||
7118 | /* Clean up. */ | |
7119 | fn_jpeg_finish_decompress (&cinfo); | |
7120 | fn_jpeg_destroy_decompress (&cinfo); | |
7121 | if (fp) | |
7122 | fclose ((FILE *) fp); | |
7123 | ||
7124 | /* Maybe fill in the background field while we have ximg handy. */ | |
7125 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7126 | /* Casting avoids a GCC warning. */ |
7127 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7128 | |
7129 | /* Put the image into the pixmap. */ | |
7130 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7131 | x_destroy_x_image (ximg); | |
7132 | UNGCPRO; | |
7133 | return 1; | |
7134 | } | |
7135 | ||
7136 | #else /* HAVE_JPEG */ | |
7137 | ||
7138 | #ifdef MAC_OS | |
7139 | static int | |
7140 | jpeg_load (f, img) | |
7141 | struct frame *f; | |
7142 | struct image *img; | |
7143 | { | |
7144 | #ifdef MAC_OSX | |
7145 | return image_load_quartz2d (f, img, 0); | |
7146 | #else | |
7147 | return image_load_quicktime (f, img, kQTFileTypeJPEG); | |
7148 | #endif | |
7149 | } | |
7150 | #endif /* MAC_OS */ | |
7151 | ||
7152 | #endif /* !HAVE_JPEG */ | |
7153 | ||
7154 | ||
7155 | \f | |
7156 | /*********************************************************************** | |
7157 | TIFF | |
7158 | ***********************************************************************/ | |
7159 | ||
7160 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
7161 | ||
7162 | static int tiff_image_p P_ ((Lisp_Object object)); | |
7163 | static int tiff_load P_ ((struct frame *f, struct image *img)); | |
7164 | ||
7165 | /* The symbol `tiff' identifying images of this type. */ | |
7166 | ||
7167 | Lisp_Object Qtiff; | |
7168 | ||
7169 | /* Indices of image specification fields in tiff_format, below. */ | |
7170 | ||
7171 | enum tiff_keyword_index | |
7172 | { | |
7173 | TIFF_TYPE, | |
7174 | TIFF_DATA, | |
7175 | TIFF_FILE, | |
7176 | TIFF_ASCENT, | |
7177 | TIFF_MARGIN, | |
7178 | TIFF_RELIEF, | |
7179 | TIFF_ALGORITHM, | |
7180 | TIFF_HEURISTIC_MASK, | |
7181 | TIFF_MASK, | |
7182 | TIFF_BACKGROUND, | |
7183 | TIFF_LAST | |
7184 | }; | |
7185 | ||
7186 | /* Vector of image_keyword structures describing the format | |
7187 | of valid user-defined image specifications. */ | |
7188 | ||
7189 | static struct image_keyword tiff_format[TIFF_LAST] = | |
7190 | { | |
7191 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7192 | {":data", IMAGE_STRING_VALUE, 0}, | |
7193 | {":file", IMAGE_STRING_VALUE, 0}, | |
7194 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7195 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7196 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7197 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7198 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7199 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7200 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7201 | }; | |
7202 | ||
7203 | /* Structure describing the image type `tiff'. */ | |
7204 | ||
7205 | static struct image_type tiff_type = | |
7206 | { | |
7207 | &Qtiff, | |
7208 | tiff_image_p, | |
7209 | tiff_load, | |
7210 | x_clear_image, | |
7211 | NULL | |
7212 | }; | |
7213 | ||
7214 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
7215 | ||
7216 | static int | |
7217 | tiff_image_p (object) | |
7218 | Lisp_Object object; | |
7219 | { | |
7220 | struct image_keyword fmt[TIFF_LAST]; | |
7221 | bcopy (tiff_format, fmt, sizeof fmt); | |
7222 | ||
7223 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
7224 | return 0; | |
7225 | ||
7226 | /* Must specify either the :data or :file keyword. */ | |
7227 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
7228 | } | |
7229 | ||
7230 | #endif /* HAVE_TIFF || MAC_OS */ | |
7231 | ||
7232 | #ifdef HAVE_TIFF | |
7233 | ||
7234 | #include <tiffio.h> | |
7235 | ||
7236 | #ifdef HAVE_NTGUI | |
7237 | ||
7238 | /* TIFF library details. */ | |
7239 | DEF_IMGLIB_FN (TIFFSetErrorHandler); | |
7240 | DEF_IMGLIB_FN (TIFFSetWarningHandler); | |
7241 | DEF_IMGLIB_FN (TIFFOpen); | |
7242 | DEF_IMGLIB_FN (TIFFClientOpen); | |
7243 | DEF_IMGLIB_FN (TIFFGetField); | |
7244 | DEF_IMGLIB_FN (TIFFReadRGBAImage); | |
7245 | DEF_IMGLIB_FN (TIFFClose); | |
7246 | ||
7247 | static int | |
0855eb52 | 7248 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7249 | { |
7250 | HMODULE library; | |
7251 | ||
0855eb52 | 7252 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
7253 | return 0; |
7254 | ||
7255 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
7256 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
7257 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
7258 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
7259 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
7260 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
7261 | LOAD_IMGLIB_FN (library, TIFFClose); | |
7262 | return 1; | |
7263 | } | |
7264 | ||
7265 | #else | |
7266 | ||
7267 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
7268 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
7269 | #define fn_TIFFOpen TIFFOpen | |
7270 | #define fn_TIFFClientOpen TIFFClientOpen | |
7271 | #define fn_TIFFGetField TIFFGetField | |
7272 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
7273 | #define fn_TIFFClose TIFFClose | |
7274 | ||
7275 | #endif /* HAVE_NTGUI */ | |
7276 | ||
7277 | ||
7278 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
7279 | memory source, but we have to provide a lot of extra functions. | |
7280 | Blah. | |
7281 | ||
7282 | We really only need to implement read and seek, but I am not | |
7283 | convinced that the TIFF library is smart enough not to destroy | |
7284 | itself if we only hand it the function pointers we need to | |
7285 | override. */ | |
7286 | ||
7287 | typedef struct | |
7288 | { | |
7289 | unsigned char *bytes; | |
7290 | size_t len; | |
7291 | int index; | |
7292 | } | |
7293 | tiff_memory_source; | |
7294 | ||
7295 | static size_t | |
7296 | tiff_read_from_memory (data, buf, size) | |
7297 | thandle_t data; | |
7298 | tdata_t buf; | |
7299 | tsize_t size; | |
7300 | { | |
7301 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7302 | ||
7303 | if (size > src->len - src->index) | |
7304 | return (size_t) -1; | |
7305 | bcopy (src->bytes + src->index, buf, size); | |
7306 | src->index += size; | |
7307 | return size; | |
7308 | } | |
7309 | ||
7310 | static size_t | |
7311 | tiff_write_from_memory (data, buf, size) | |
7312 | thandle_t data; | |
7313 | tdata_t buf; | |
7314 | tsize_t size; | |
7315 | { | |
7316 | return (size_t) -1; | |
7317 | } | |
7318 | ||
7319 | static toff_t | |
7320 | tiff_seek_in_memory (data, off, whence) | |
7321 | thandle_t data; | |
7322 | toff_t off; | |
7323 | int whence; | |
7324 | { | |
7325 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7326 | int idx; | |
7327 | ||
7328 | switch (whence) | |
7329 | { | |
7330 | case SEEK_SET: /* Go from beginning of source. */ | |
7331 | idx = off; | |
7332 | break; | |
7333 | ||
7334 | case SEEK_END: /* Go from end of source. */ | |
7335 | idx = src->len + off; | |
7336 | break; | |
7337 | ||
7338 | case SEEK_CUR: /* Go from current position. */ | |
7339 | idx = src->index + off; | |
7340 | break; | |
7341 | ||
7342 | default: /* Invalid `whence'. */ | |
7343 | return -1; | |
7344 | } | |
7345 | ||
7346 | if (idx > src->len || idx < 0) | |
7347 | return -1; | |
7348 | ||
7349 | src->index = idx; | |
7350 | return src->index; | |
7351 | } | |
7352 | ||
7353 | static int | |
7354 | tiff_close_memory (data) | |
7355 | thandle_t data; | |
7356 | { | |
7357 | /* NOOP */ | |
7358 | return 0; | |
7359 | } | |
7360 | ||
7361 | static int | |
7362 | tiff_mmap_memory (data, pbase, psize) | |
7363 | thandle_t data; | |
7364 | tdata_t *pbase; | |
7365 | toff_t *psize; | |
7366 | { | |
7367 | /* It is already _IN_ memory. */ | |
7368 | return 0; | |
7369 | } | |
7370 | ||
7371 | static void | |
7372 | tiff_unmap_memory (data, base, size) | |
7373 | thandle_t data; | |
7374 | tdata_t base; | |
7375 | toff_t size; | |
7376 | { | |
7377 | /* We don't need to do this. */ | |
7378 | } | |
7379 | ||
7380 | static toff_t | |
7381 | tiff_size_of_memory (data) | |
7382 | thandle_t data; | |
7383 | { | |
7384 | return ((tiff_memory_source *) data)->len; | |
7385 | } | |
7386 | ||
7387 | ||
7388 | static void | |
7389 | tiff_error_handler (title, format, ap) | |
7390 | const char *title, *format; | |
7391 | va_list ap; | |
7392 | { | |
7393 | char buf[512]; | |
7394 | int len; | |
7395 | ||
7396 | len = sprintf (buf, "TIFF error: %s ", title); | |
7397 | vsprintf (buf + len, format, ap); | |
7398 | add_to_log (buf, Qnil, Qnil); | |
7399 | } | |
7400 | ||
7401 | ||
7402 | static void | |
7403 | tiff_warning_handler (title, format, ap) | |
7404 | const char *title, *format; | |
7405 | va_list ap; | |
7406 | { | |
7407 | char buf[512]; | |
7408 | int len; | |
7409 | ||
7410 | len = sprintf (buf, "TIFF warning: %s ", title); | |
7411 | vsprintf (buf + len, format, ap); | |
7412 | add_to_log (buf, Qnil, Qnil); | |
7413 | } | |
7414 | ||
7415 | ||
7416 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
7417 | successful. */ | |
7418 | ||
7419 | static int | |
7420 | tiff_load (f, img) | |
7421 | struct frame *f; | |
7422 | struct image *img; | |
7423 | { | |
7424 | Lisp_Object file, specified_file; | |
7425 | Lisp_Object specified_data; | |
7426 | TIFF *tiff; | |
7427 | int width, height, x, y; | |
7428 | uint32 *buf; | |
7429 | int rc; | |
7430 | XImagePtr ximg; | |
7431 | struct gcpro gcpro1; | |
7432 | tiff_memory_source memsrc; | |
7433 | ||
7434 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7435 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7436 | file = Qnil; | |
7437 | GCPRO1 (file); | |
7438 | ||
7439 | fn_TIFFSetErrorHandler (tiff_error_handler); | |
7440 | fn_TIFFSetWarningHandler (tiff_warning_handler); | |
7441 | ||
7442 | if (NILP (specified_data)) | |
7443 | { | |
7444 | /* Read from a file */ | |
7445 | file = x_find_image_file (specified_file); | |
7446 | if (!STRINGP (file)) | |
7447 | { | |
7448 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7449 | UNGCPRO; | |
7450 | return 0; | |
7451 | } | |
7452 | ||
2e09fef1 EZ |
7453 | /* Try to open the image file. Casting return value avoids a |
7454 | GCC warning on W32. */ | |
7455 | tiff = (TIFF *)fn_TIFFOpen (SDATA (file), "r"); | |
4ef0d4d0 KS |
7456 | if (tiff == NULL) |
7457 | { | |
7458 | image_error ("Cannot open `%s'", file, Qnil); | |
7459 | UNGCPRO; | |
7460 | return 0; | |
7461 | } | |
7462 | } | |
7463 | else | |
7464 | { | |
7465 | /* Memory source! */ | |
7466 | memsrc.bytes = SDATA (specified_data); | |
7467 | memsrc.len = SBYTES (specified_data); | |
7468 | memsrc.index = 0; | |
7469 | ||
2e09fef1 EZ |
7470 | /* Casting return value avoids a GCC warning on W32. */ |
7471 | tiff = (TIFF *)fn_TIFFClientOpen ("memory_source", "r", &memsrc, | |
7472 | (TIFFReadWriteProc) tiff_read_from_memory, | |
7473 | (TIFFReadWriteProc) tiff_write_from_memory, | |
7474 | tiff_seek_in_memory, | |
7475 | tiff_close_memory, | |
7476 | tiff_size_of_memory, | |
7477 | tiff_mmap_memory, | |
7478 | tiff_unmap_memory); | |
4ef0d4d0 KS |
7479 | |
7480 | if (!tiff) | |
7481 | { | |
7482 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
7483 | UNGCPRO; | |
7484 | return 0; | |
7485 | } | |
7486 | } | |
7487 | ||
7488 | /* Get width and height of the image, and allocate a raster buffer | |
7489 | of width x height 32-bit values. */ | |
7490 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
7491 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
7492 | |
7493 | if (!check_image_size (f, width, height)) | |
7494 | { | |
7495 | image_error ("Invalid image size", Qnil, Qnil); | |
7496 | UNGCPRO; | |
7497 | return 0; | |
7498 | } | |
7499 | ||
4ef0d4d0 KS |
7500 | buf = (uint32 *) xmalloc (width * height * sizeof *buf); |
7501 | ||
7502 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
7503 | fn_TIFFClose (tiff); | |
7504 | if (!rc) | |
7505 | { | |
7506 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
7507 | xfree (buf); | |
7508 | UNGCPRO; | |
7509 | return 0; | |
7510 | } | |
7511 | ||
7512 | /* Create the X image and pixmap. */ | |
7513 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7514 | { | |
7515 | xfree (buf); | |
7516 | UNGCPRO; | |
7517 | return 0; | |
7518 | } | |
7519 | ||
7520 | /* Initialize the color table. */ | |
7521 | init_color_table (); | |
7522 | ||
7523 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
7524 | for (y = 0; y < height; ++y) | |
7525 | { | |
7526 | uint32 *row = buf + y * width; | |
7527 | ||
7528 | for (x = 0; x < width; ++x) | |
7529 | { | |
7530 | uint32 abgr = row[x]; | |
7531 | int r = TIFFGetR (abgr) << 8; | |
7532 | int g = TIFFGetG (abgr) << 8; | |
7533 | int b = TIFFGetB (abgr) << 8; | |
7534 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
7535 | } | |
7536 | } | |
7537 | ||
7538 | #ifdef COLOR_TABLE_SUPPORT | |
7539 | /* Remember the colors allocated for the image. Free the color table. */ | |
7540 | img->colors = colors_in_color_table (&img->ncolors); | |
7541 | free_color_table (); | |
7542 | #endif /* COLOR_TABLE_SUPPORT */ | |
7543 | ||
7544 | img->width = width; | |
7545 | img->height = height; | |
7546 | ||
7547 | /* Maybe fill in the background field while we have ximg handy. */ | |
7548 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7549 | /* Casting avoids a GCC warning on W32. */ |
7550 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7551 | |
7552 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7553 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7554 | x_destroy_x_image (ximg); | |
7555 | xfree (buf); | |
7556 | ||
7557 | UNGCPRO; | |
7558 | return 1; | |
7559 | } | |
7560 | ||
7561 | #else /* HAVE_TIFF */ | |
7562 | ||
7563 | #ifdef MAC_OS | |
7564 | static int | |
7565 | tiff_load (f, img) | |
7566 | struct frame *f; | |
7567 | struct image *img; | |
7568 | { | |
7569 | return image_load_quicktime (f, img, kQTFileTypeTIFF); | |
7570 | } | |
7571 | #endif /* MAC_OS */ | |
7572 | ||
7573 | #endif /* !HAVE_TIFF */ | |
7574 | ||
7575 | ||
7576 | \f | |
7577 | /*********************************************************************** | |
7578 | GIF | |
7579 | ***********************************************************************/ | |
7580 | ||
7581 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
7582 | ||
7583 | static int gif_image_p P_ ((Lisp_Object object)); | |
7584 | static int gif_load P_ ((struct frame *f, struct image *img)); | |
6ac3c7bb | 7585 | static void gif_clear_image P_ ((struct frame *f, struct image *img)); |
4ef0d4d0 KS |
7586 | |
7587 | /* The symbol `gif' identifying images of this type. */ | |
7588 | ||
7589 | Lisp_Object Qgif; | |
7590 | ||
7591 | /* Indices of image specification fields in gif_format, below. */ | |
7592 | ||
7593 | enum gif_keyword_index | |
7594 | { | |
7595 | GIF_TYPE, | |
7596 | GIF_DATA, | |
7597 | GIF_FILE, | |
7598 | GIF_ASCENT, | |
7599 | GIF_MARGIN, | |
7600 | GIF_RELIEF, | |
7601 | GIF_ALGORITHM, | |
7602 | GIF_HEURISTIC_MASK, | |
7603 | GIF_MASK, | |
7604 | GIF_IMAGE, | |
7605 | GIF_BACKGROUND, | |
7606 | GIF_LAST | |
7607 | }; | |
7608 | ||
7609 | /* Vector of image_keyword structures describing the format | |
7610 | of valid user-defined image specifications. */ | |
7611 | ||
7612 | static struct image_keyword gif_format[GIF_LAST] = | |
7613 | { | |
7614 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7615 | {":data", IMAGE_STRING_VALUE, 0}, | |
7616 | {":file", IMAGE_STRING_VALUE, 0}, | |
7617 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7618 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7619 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7620 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7621 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7622 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7623 | {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, | |
7624 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7625 | }; | |
7626 | ||
7627 | /* Structure describing the image type `gif'. */ | |
7628 | ||
7629 | static struct image_type gif_type = | |
7630 | { | |
7631 | &Qgif, | |
7632 | gif_image_p, | |
7633 | gif_load, | |
6ac3c7bb | 7634 | gif_clear_image, |
4ef0d4d0 KS |
7635 | NULL |
7636 | }; | |
7637 | ||
6ac3c7bb KS |
7638 | /* Free X resources of GIF image IMG which is used on frame F. */ |
7639 | ||
7640 | static void | |
7641 | gif_clear_image (f, img) | |
7642 | struct frame *f; | |
7643 | struct image *img; | |
7644 | { | |
7645 | /* IMG->data.ptr_val may contain extension data. */ | |
7646 | img->data.lisp_val = Qnil; | |
7647 | x_clear_image (f, img); | |
7648 | } | |
7649 | ||
4ef0d4d0 KS |
7650 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
7651 | ||
7652 | static int | |
7653 | gif_image_p (object) | |
7654 | Lisp_Object object; | |
7655 | { | |
7656 | struct image_keyword fmt[GIF_LAST]; | |
7657 | bcopy (gif_format, fmt, sizeof fmt); | |
7658 | ||
7659 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7660 | return 0; | |
7661 | ||
7662 | /* Must specify either the :data or :file keyword. */ | |
7663 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7664 | } | |
7665 | ||
7666 | #endif /* HAVE_GIF || MAC_OS */ | |
7667 | ||
7668 | #ifdef HAVE_GIF | |
7669 | ||
7670 | #if defined (HAVE_NTGUI) || defined (MAC_OS) | |
2e09fef1 EZ |
7671 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7672 | Undefine before redefining to avoid a preprocessor warning. */ | |
7673 | #ifdef DrawText | |
7674 | #undef DrawText | |
7675 | #endif | |
4ef0d4d0 KS |
7676 | /* avoid conflict with QuickdrawText.h */ |
7677 | #define DrawText gif_DrawText | |
7678 | #include <gif_lib.h> | |
7679 | #undef DrawText | |
7680 | ||
7681 | #else /* HAVE_NTGUI || MAC_OS */ | |
7682 | ||
7683 | #include <gif_lib.h> | |
7684 | ||
7685 | #endif /* HAVE_NTGUI || MAC_OS */ | |
7686 | ||
7687 | ||
7688 | #ifdef HAVE_NTGUI | |
7689 | ||
7690 | /* GIF library details. */ | |
7691 | DEF_IMGLIB_FN (DGifCloseFile); | |
7692 | DEF_IMGLIB_FN (DGifSlurp); | |
7693 | DEF_IMGLIB_FN (DGifOpen); | |
7694 | DEF_IMGLIB_FN (DGifOpenFileName); | |
7695 | ||
7696 | static int | |
0855eb52 | 7697 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7698 | { |
7699 | HMODULE library; | |
7700 | ||
0855eb52 | 7701 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7702 | return 0; |
7703 | ||
7704 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7705 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7706 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7707 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7708 | return 1; | |
7709 | } | |
7710 | ||
7711 | #else | |
7712 | ||
7713 | #define fn_DGifCloseFile DGifCloseFile | |
7714 | #define fn_DGifSlurp DGifSlurp | |
7715 | #define fn_DGifOpen DGifOpen | |
7716 | #define fn_DGifOpenFileName DGifOpenFileName | |
7717 | ||
7718 | #endif /* HAVE_NTGUI */ | |
7719 | ||
7720 | /* Reading a GIF image from memory | |
7721 | Based on the PNG memory stuff to a certain extent. */ | |
7722 | ||
7723 | typedef struct | |
7724 | { | |
7725 | unsigned char *bytes; | |
7726 | size_t len; | |
7727 | int index; | |
7728 | } | |
7729 | gif_memory_source; | |
7730 | ||
7731 | /* Make the current memory source available to gif_read_from_memory. | |
7732 | It's done this way because not all versions of libungif support | |
7733 | a UserData field in the GifFileType structure. */ | |
7734 | static gif_memory_source *current_gif_memory_src; | |
7735 | ||
7736 | static int | |
7737 | gif_read_from_memory (file, buf, len) | |
7738 | GifFileType *file; | |
7739 | GifByteType *buf; | |
7740 | int len; | |
7741 | { | |
7742 | gif_memory_source *src = current_gif_memory_src; | |
7743 | ||
7744 | if (len > src->len - src->index) | |
7745 | return -1; | |
7746 | ||
7747 | bcopy (src->bytes + src->index, buf, len); | |
7748 | src->index += len; | |
7749 | return len; | |
7750 | } | |
7751 | ||
7752 | ||
7753 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7754 | successful. */ | |
7755 | ||
7756 | static int | |
7757 | gif_load (f, img) | |
7758 | struct frame *f; | |
7759 | struct image *img; | |
7760 | { | |
7761 | Lisp_Object file, specified_file; | |
7762 | Lisp_Object specified_data; | |
7763 | int rc, width, height, x, y, i; | |
7764 | XImagePtr ximg; | |
7765 | ColorMapObject *gif_color_map; | |
7766 | unsigned long pixel_colors[256]; | |
7767 | GifFileType *gif; | |
7768 | struct gcpro gcpro1; | |
7769 | Lisp_Object image; | |
6ac3c7bb | 7770 | int ino, image_height, image_width; |
4ef0d4d0 KS |
7771 | gif_memory_source memsrc; |
7772 | unsigned char *raster; | |
7773 | ||
7774 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7775 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7776 | file = Qnil; | |
7777 | GCPRO1 (file); | |
7778 | ||
7779 | if (NILP (specified_data)) | |
7780 | { | |
7781 | file = x_find_image_file (specified_file); | |
7782 | if (!STRINGP (file)) | |
7783 | { | |
7784 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7785 | UNGCPRO; | |
7786 | return 0; | |
7787 | } | |
7788 | ||
2e09fef1 EZ |
7789 | /* Open the GIF file. Casting return value avoids a GCC warning |
7790 | on W32. */ | |
7791 | gif = (GifFileType *)fn_DGifOpenFileName (SDATA (file)); | |
4ef0d4d0 KS |
7792 | if (gif == NULL) |
7793 | { | |
7794 | image_error ("Cannot open `%s'", file, Qnil); | |
7795 | UNGCPRO; | |
7796 | return 0; | |
7797 | } | |
7798 | } | |
7799 | else | |
7800 | { | |
7801 | /* Read from memory! */ | |
7802 | current_gif_memory_src = &memsrc; | |
7803 | memsrc.bytes = SDATA (specified_data); | |
7804 | memsrc.len = SBYTES (specified_data); | |
7805 | memsrc.index = 0; | |
7806 | ||
2e09fef1 EZ |
7807 | /* Casting return value avoids a GCC warning on W32. */ |
7808 | gif = (GifFileType *)fn_DGifOpen(&memsrc, gif_read_from_memory); | |
4ef0d4d0 KS |
7809 | if (!gif) |
7810 | { | |
7811 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
7812 | UNGCPRO; | |
7813 | return 0; | |
7814 | } | |
7815 | } | |
7816 | ||
f1f25b99 CY |
7817 | /* Before reading entire contents, check the declared image size. */ |
7818 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7819 | { | |
7820 | image_error ("Invalid image size", Qnil, Qnil); | |
7821 | fn_DGifCloseFile (gif); | |
7822 | UNGCPRO; | |
7823 | return 0; | |
7824 | } | |
7825 | ||
4ef0d4d0 KS |
7826 | /* Read entire contents. */ |
7827 | rc = fn_DGifSlurp (gif); | |
7828 | if (rc == GIF_ERROR) | |
7829 | { | |
7830 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7831 | fn_DGifCloseFile (gif); | |
7832 | UNGCPRO; | |
7833 | return 0; | |
7834 | } | |
7835 | ||
7836 | image = image_spec_value (img->spec, QCindex, NULL); | |
7837 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7838 | if (ino >= gif->ImageCount) | |
7839 | { | |
7840 | image_error ("Invalid image number `%s' in image `%s'", | |
7841 | image, img->spec); | |
7842 | fn_DGifCloseFile (gif); | |
7843 | UNGCPRO; | |
7844 | return 0; | |
7845 | } | |
7846 | ||
6ac3c7bb KS |
7847 | img->corners[TOP_CORNER] = gif->SavedImages[ino].ImageDesc.Top; |
7848 | img->corners[LEFT_CORNER] = gif->SavedImages[ino].ImageDesc.Left; | |
0f4aca46 | 7849 | image_height = gif->SavedImages[ino].ImageDesc.Height; |
6ac3c7bb KS |
7850 | img->corners[BOT_CORNER] = img->corners[TOP_CORNER] + image_height; |
7851 | image_width = gif->SavedImages[ino].ImageDesc.Width; | |
7852 | img->corners[RIGHT_CORNER] = img->corners[LEFT_CORNER] + image_width; | |
0f4aca46 KS |
7853 | |
7854 | width = img->width = max (gif->SWidth, | |
7855 | max (gif->Image.Left + gif->Image.Width, | |
6ac3c7bb | 7856 | img->corners[RIGHT_CORNER])); |
0f4aca46 KS |
7857 | height = img->height = max (gif->SHeight, |
7858 | max (gif->Image.Top + gif->Image.Height, | |
6ac3c7bb | 7859 | img->corners[BOT_CORNER])); |
4ef0d4d0 | 7860 | |
f1f25b99 CY |
7861 | if (!check_image_size (f, width, height)) |
7862 | { | |
7863 | image_error ("Invalid image size", Qnil, Qnil); | |
7864 | fn_DGifCloseFile (gif); | |
7865 | UNGCPRO; | |
7866 | return 0; | |
7867 | } | |
7868 | ||
4ef0d4d0 KS |
7869 | /* Create the X image and pixmap. */ |
7870 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7871 | { | |
7872 | fn_DGifCloseFile (gif); | |
7873 | UNGCPRO; | |
7874 | return 0; | |
7875 | } | |
7876 | ||
7877 | /* Allocate colors. */ | |
7878 | gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap; | |
7879 | if (!gif_color_map) | |
7880 | gif_color_map = gif->SColorMap; | |
7881 | init_color_table (); | |
7882 | bzero (pixel_colors, sizeof pixel_colors); | |
7883 | ||
7884 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
7885 | { | |
7886 | int r = gif_color_map->Colors[i].Red << 8; | |
7887 | int g = gif_color_map->Colors[i].Green << 8; | |
7888 | int b = gif_color_map->Colors[i].Blue << 8; | |
7889 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7890 | } | |
7891 | ||
7892 | #ifdef COLOR_TABLE_SUPPORT | |
7893 | img->colors = colors_in_color_table (&img->ncolors); | |
7894 | free_color_table (); | |
7895 | #endif /* COLOR_TABLE_SUPPORT */ | |
7896 | ||
7897 | /* Clear the part of the screen image that are not covered by | |
7898 | the image from the GIF file. Full animated GIF support | |
7899 | requires more than can be done here (see the gif89 spec, | |
7900 | disposal methods). Let's simply assume that the part | |
7901 | not covered by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7902 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7903 | for (x = 0; x < width; ++x) |
7904 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7905 | ||
6ac3c7bb | 7906 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7907 | for (x = 0; x < width; ++x) |
7908 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7909 | ||
6ac3c7bb | 7910 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7911 | { |
6ac3c7bb | 7912 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7913 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7914 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7915 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7916 | } | |
7917 | ||
7918 | /* Read the GIF image into the X image. We use a local variable | |
7919 | `raster' here because RasterBits below is a char *, and invites | |
7920 | problems with bytes >= 0x80. */ | |
7921 | raster = (unsigned char *) gif->SavedImages[ino].RasterBits; | |
7922 | ||
7923 | if (gif->SavedImages[ino].ImageDesc.Interlace) | |
7924 | { | |
7925 | static int interlace_start[] = {0, 4, 2, 1}; | |
7926 | static int interlace_increment[] = {8, 8, 4, 2}; | |
7927 | int pass; | |
7928 | int row = interlace_start[0]; | |
7929 | ||
7930 | pass = 0; | |
7931 | ||
7932 | for (y = 0; y < image_height; y++) | |
7933 | { | |
7934 | if (row >= image_height) | |
7935 | { | |
7936 | row = interlace_start[++pass]; | |
7937 | while (row >= image_height) | |
7938 | row = interlace_start[++pass]; | |
7939 | } | |
7940 | ||
7941 | for (x = 0; x < image_width; x++) | |
7942 | { | |
7943 | int i = raster[(y * image_width) + x]; | |
6ac3c7bb KS |
7944 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7945 | row + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7946 | } |
7947 | ||
7948 | row += interlace_increment[pass]; | |
7949 | } | |
7950 | } | |
7951 | else | |
7952 | { | |
7953 | for (y = 0; y < image_height; ++y) | |
7954 | for (x = 0; x < image_width; ++x) | |
7955 | { | |
7956 | int i = raster[y * image_width + x]; | |
6ac3c7bb KS |
7957 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7958 | y + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7959 | } |
7960 | } | |
7961 | ||
6ac3c7bb KS |
7962 | /* Save GIF image extension data for `image-extension-data'. |
7963 | Format is (count IMAGES FUNCTION "BYTES" ...). */ | |
7964 | img->data.lisp_val = Qnil; | |
7965 | if (gif->SavedImages[ino].ExtensionBlockCount > 0) | |
7966 | { | |
7967 | ExtensionBlock *ext = gif->SavedImages[ino].ExtensionBlocks; | |
7968 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++, ext++) | |
7969 | /* Append (... FUNCTION "BYTES") */ | |
7970 | img->data.lisp_val = Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7971 | Fcons (make_number (ext->Function), | |
7972 | img->data.lisp_val)); | |
7973 | img->data.lisp_val = Fnreverse (img->data.lisp_val); | |
7974 | } | |
7975 | if (gif->ImageCount > 1) | |
7976 | img->data.lisp_val = Fcons (Qcount, | |
7977 | Fcons (make_number (gif->ImageCount), | |
7978 | img->data.lisp_val)); | |
7979 | ||
4ef0d4d0 KS |
7980 | fn_DGifCloseFile (gif); |
7981 | ||
7982 | /* Maybe fill in the background field while we have ximg handy. */ | |
7983 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7984 | /* Casting avoids a GCC warning. */ |
7985 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7986 | |
7987 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7988 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7989 | x_destroy_x_image (ximg); | |
7990 | ||
7991 | UNGCPRO; | |
7992 | return 1; | |
7993 | } | |
7994 | ||
2e09fef1 | 7995 | #else /* !HAVE_GIF */ |
4ef0d4d0 KS |
7996 | |
7997 | #ifdef MAC_OS | |
7998 | static int | |
7999 | gif_load (f, img) | |
8000 | struct frame *f; | |
8001 | struct image *img; | |
8002 | { | |
8003 | Lisp_Object specified_file, file; | |
8004 | Lisp_Object specified_data; | |
8005 | OSErr err; | |
8006 | Boolean graphic_p, movie_p, prefer_graphic_p; | |
8007 | Handle dh = NULL; | |
8008 | Movie movie = NULL; | |
8009 | Lisp_Object image; | |
8010 | Track track = NULL; | |
8011 | Media media = NULL; | |
8012 | long nsamples; | |
8013 | Rect rect; | |
8014 | Lisp_Object specified_bg; | |
8015 | XColor color; | |
8016 | RGBColor bg_color; | |
8017 | int width, height; | |
8018 | XImagePtr ximg; | |
fb8b2fc3 YM |
8019 | TimeScale time_scale; |
8020 | TimeValue time, duration; | |
4ef0d4d0 | 8021 | int ino; |
2a316a84 ST |
8022 | CGrafPtr old_port; |
8023 | GDHandle old_gdh; | |
4ef0d4d0 KS |
8024 | |
8025 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
8026 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
8027 | ||
dac5344b YM |
8028 | /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */ |
8029 | EnterMovies (); | |
8030 | ||
4ef0d4d0 KS |
8031 | if (NILP (specified_data)) |
8032 | { | |
8033 | /* Read from a file */ | |
8034 | FSSpec fss; | |
8035 | short refnum; | |
8036 | ||
8037 | err = find_image_fsspec (specified_file, &file, &fss); | |
8038 | if (err != noErr) | |
8039 | { | |
8040 | if (err == fnfErr) | |
8041 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
8042 | else | |
8043 | goto open_error; | |
8044 | } | |
8045 | ||
8046 | err = CanQuickTimeOpenFile (&fss, kQTFileTypeGIF, 0, | |
8047 | &graphic_p, &movie_p, &prefer_graphic_p, 0); | |
8048 | if (err != noErr) | |
8049 | goto open_error; | |
8050 | ||
8051 | if (!graphic_p && !movie_p) | |
8052 | goto open_error; | |
8053 | if (prefer_graphic_p) | |
8054 | return image_load_qt_1 (f, img, kQTFileTypeGIF, &fss, NULL); | |
8055 | err = OpenMovieFile (&fss, &refnum, fsRdPerm); | |
8056 | if (err != noErr) | |
8057 | goto open_error; | |
8058 | err = NewMovieFromFile (&movie, refnum, NULL, NULL, 0, NULL); | |
8059 | CloseMovieFile (refnum); | |
8060 | if (err != noErr) | |
8061 | { | |
8062 | image_error ("Error reading `%s'", file, Qnil); | |
8063 | return 0; | |
8064 | } | |
8065 | } | |
8066 | else | |
8067 | { | |
8068 | /* Memory source! */ | |
8069 | Handle dref = NULL; | |
8070 | long file_type_atom[3]; | |
8071 | ||
8072 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
8073 | if (err != noErr) | |
8074 | { | |
8075 | image_error ("Cannot allocate data handle for `%s'", | |
8076 | img->spec, Qnil); | |
8077 | goto error; | |
8078 | } | |
8079 | ||
8080 | file_type_atom[0] = EndianU32_NtoB (sizeof (long) * 3); | |
8081 | file_type_atom[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType); | |
8082 | file_type_atom[2] = EndianU32_NtoB (kQTFileTypeGIF); | |
8083 | err = PtrToHand (&dh, &dref, sizeof (Handle)); | |
8084 | if (err == noErr) | |
8085 | /* no file name */ | |
8086 | err = PtrAndHand ("\p", dref, 1); | |
8087 | if (err == noErr) | |
8088 | err = PtrAndHand (file_type_atom, dref, sizeof (long) * 3); | |
8089 | if (err != noErr) | |
8090 | { | |
8091 | image_error ("Cannot allocate handle data ref for `%s'", img->spec, Qnil); | |
8092 | goto error; | |
8093 | } | |
8094 | err = CanQuickTimeOpenDataRef (dref, HandleDataHandlerSubType, &graphic_p, | |
8095 | &movie_p, &prefer_graphic_p, 0); | |
8096 | if (err != noErr) | |
8097 | goto open_error; | |
8098 | ||
8099 | if (!graphic_p && !movie_p) | |
8100 | goto open_error; | |
8101 | if (prefer_graphic_p) | |
8102 | { | |
8103 | int success_p; | |
8104 | ||
8105 | DisposeHandle (dref); | |
8106 | success_p = image_load_qt_1 (f, img, kQTFileTypeGIF, NULL, dh); | |
8107 | DisposeHandle (dh); | |
8108 | return success_p; | |
8109 | } | |
8110 | err = NewMovieFromDataRef (&movie, 0, NULL, dref, | |
8111 | HandleDataHandlerSubType); | |
8112 | DisposeHandle (dref); | |
8113 | if (err != noErr) | |
8114 | goto open_error; | |
8115 | } | |
8116 | ||
8117 | image = image_spec_value (img->spec, QCindex, NULL); | |
8118 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
8119 | track = GetMovieIndTrack (movie, 1); | |
8120 | media = GetTrackMedia (track); | |
8121 | nsamples = GetMediaSampleCount (media); | |
8122 | if (ino >= nsamples) | |
8123 | { | |
8124 | image_error ("Invalid image number `%s' in image `%s'", | |
8125 | image, img->spec); | |
8126 | goto error; | |
8127 | } | |
fb8b2fc3 | 8128 | time_scale = GetMediaTimeScale (media); |
4ef0d4d0 KS |
8129 | |
8130 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8131 | if (!STRINGP (specified_bg) || | |
8132 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
8133 | { | |
8134 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
8135 | color.red = RED16_FROM_ULONG (color.pixel); | |
8136 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
8137 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
8138 | } | |
8139 | GetMovieBox (movie, &rect); | |
8140 | width = img->width = rect.right - rect.left; | |
8141 | height = img->height = rect.bottom - rect.top; | |
8142 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
8143 | goto error; | |
8144 | ||
2a316a84 | 8145 | GetGWorld (&old_port, &old_gdh); |
4ef0d4d0 KS |
8146 | SetGWorld (ximg, NULL); |
8147 | bg_color.red = color.red; | |
8148 | bg_color.green = color.green; | |
8149 | bg_color.blue = color.blue; | |
8150 | RGBBackColor (&bg_color); | |
2a316a84 | 8151 | SetGWorld (old_port, old_gdh); |
e0e30823 | 8152 | SetMovieActive (movie, 1); |
4ef0d4d0 | 8153 | SetMovieGWorld (movie, ximg, NULL); |
fb8b2fc3 | 8154 | SampleNumToMediaTime (media, ino + 1, &time, &duration); |
4ef0d4d0 KS |
8155 | SetMovieTimeValue (movie, time); |
8156 | MoviesTask (movie, 0L); | |
8157 | DisposeTrackMedia (media); | |
8158 | DisposeMovieTrack (track); | |
8159 | DisposeMovie (movie); | |
8160 | if (dh) | |
8161 | DisposeHandle (dh); | |
fb8b2fc3 YM |
8162 | |
8163 | /* Save GIF image extension data for `image-extension-data'. | |
8c88cb18 YM |
8164 | Format is (count IMAGES 0xf9 GRAPHIC_CONTROL_EXTENSION_BLOCK). */ |
8165 | { | |
a73c40d1 | 8166 | Lisp_Object gce = make_uninit_string (4); |
8c88cb18 YM |
8167 | int centisec = ((float)duration / time_scale) * 100.0f + 0.5f; |
8168 | ||
8169 | /* Fill the delay time field. */ | |
a73c40d1 YM |
8170 | SSET (gce, 1, centisec & 0xff); |
8171 | SSET (gce, 2, (centisec >> 8) & 0xff); | |
8c88cb18 | 8172 | /* We don't know about other fields. */ |
a73c40d1 YM |
8173 | SSET (gce, 0, 0); |
8174 | SSET (gce, 3, 0); | |
8c88cb18 YM |
8175 | |
8176 | img->data.lisp_val = list4 (Qcount, make_number (nsamples), | |
a73c40d1 | 8177 | make_number (0xf9), gce); |
8c88cb18 | 8178 | } |
fb8b2fc3 | 8179 | |
4ef0d4d0 KS |
8180 | /* Maybe fill in the background field while we have ximg handy. */ |
8181 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
8182 | IMAGE_BACKGROUND (img, f, ximg); | |
8183 | ||
8184 | /* Put the image into the pixmap. */ | |
8185 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8186 | x_destroy_x_image (ximg); | |
8187 | return 1; | |
8188 | ||
8189 | open_error: | |
8190 | image_error ("Cannot open `%s'", file, Qnil); | |
8191 | error: | |
8192 | if (media) | |
8193 | DisposeTrackMedia (media); | |
8194 | if (track) | |
8195 | DisposeMovieTrack (track); | |
8196 | if (movie) | |
8197 | DisposeMovie (movie); | |
8198 | if (dh) | |
8199 | DisposeHandle (dh); | |
8200 | return 0; | |
8201 | } | |
8202 | #endif /* MAC_OS */ | |
8203 | ||
8204 | #endif /* HAVE_GIF */ | |
8205 | ||
8206 | ||
c21e6151 | 8207 | \f |
4ab27a43 GM |
8208 | /*********************************************************************** |
8209 | SVG | |
8210 | ***********************************************************************/ | |
8211 | ||
8212 | #if defined (HAVE_RSVG) | |
8213 | ||
8214 | /* Function prototypes. */ | |
8215 | ||
8216 | static int svg_image_p P_ ((Lisp_Object object)); | |
8217 | static int svg_load P_ ((struct frame *f, struct image *img)); | |
8218 | ||
8219 | static int svg_load_image P_ ((struct frame *, struct image *, | |
8220 | unsigned char *, unsigned int)); | |
8221 | ||
8222 | /* The symbol `svg' identifying images of this type. */ | |
8223 | ||
8224 | Lisp_Object Qsvg; | |
8225 | ||
8226 | /* Indices of image specification fields in svg_format, below. */ | |
8227 | ||
8228 | enum svg_keyword_index | |
8229 | { | |
8230 | SVG_TYPE, | |
8231 | SVG_DATA, | |
8232 | SVG_FILE, | |
8233 | SVG_ASCENT, | |
8234 | SVG_MARGIN, | |
8235 | SVG_RELIEF, | |
8236 | SVG_ALGORITHM, | |
8237 | SVG_HEURISTIC_MASK, | |
8238 | SVG_MASK, | |
8239 | SVG_BACKGROUND, | |
8240 | SVG_LAST | |
8241 | }; | |
8242 | ||
8243 | /* Vector of image_keyword structures describing the format | |
8244 | of valid user-defined image specifications. */ | |
8245 | ||
8246 | static struct image_keyword svg_format[SVG_LAST] = | |
8247 | { | |
8248 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8249 | {":data", IMAGE_STRING_VALUE, 0}, | |
8250 | {":file", IMAGE_STRING_VALUE, 0}, | |
8251 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8252 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8253 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8254 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8255 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8256 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8257 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8258 | }; | |
8259 | ||
8260 | /* Structure describing the image type `svg'. Its the same type of | |
8261 | structure defined for all image formats, handled by emacs image | |
8262 | functions. See struct image_type in dispextern.h. */ | |
8263 | ||
8264 | static struct image_type svg_type = | |
8265 | { | |
8266 | /* An identifier showing that this is an image structure for the SVG format. */ | |
8267 | &Qsvg, | |
8268 | /* Handle to a function that can be used to identify a SVG file. */ | |
8269 | svg_image_p, | |
8270 | /* Handle to function used to load a SVG file. */ | |
8271 | svg_load, | |
8272 | /* Handle to function to free sresources for SVG. */ | |
8273 | x_clear_image, | |
8274 | /* An internal field to link to the next image type in a list of | |
8275 | image types, will be filled in when registering the format. */ | |
c21e6151 | 8276 | NULL |
4ab27a43 GM |
8277 | }; |
8278 | ||
8279 | ||
8280 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
8281 | this by calling parse_image_spec and supplying the keywords that | |
8282 | identify the SVG format. */ | |
8283 | ||
8284 | static int | |
8285 | svg_image_p (object) | |
8286 | Lisp_Object object; | |
8287 | { | |
8288 | struct image_keyword fmt[SVG_LAST]; | |
8289 | bcopy (svg_format, fmt, sizeof fmt); | |
8290 | ||
8291 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
8292 | return 0; | |
8293 | ||
8294 | /* Must specify either the :data or :file keyword. */ | |
8295 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
8296 | } | |
8297 | ||
8298 | #include <librsvg/rsvg.h> | |
8299 | ||
8300 | /* TO DO: define DEF_IMGLIB_FN here. This macro is used to handle | |
8301 | loading of dynamic link library functions for various OS:es. | |
8302 | Currently only librsvg2 is supported, which is only available for X, | |
8303 | so its not strictly necessary yet. The current code is thought to be | |
8304 | compatible with this scheme because of the defines below, should | |
8305 | librsvg2 become available on more plattforms. */ | |
8306 | ||
8307 | #define fn_rsvg_handle_new rsvg_handle_new | |
8308 | #define fn_rsvg_handle_set_size_callback rsvg_handle_set_size_callback | |
8309 | #define fn_rsvg_handle_write rsvg_handle_write | |
8310 | #define fn_rsvg_handle_close rsvg_handle_close | |
8311 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
8312 | #define fn_rsvg_handle_free rsvg_handle_free | |
8313 | ||
8314 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width | |
8315 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8316 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8317 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8318 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8319 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8320 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
8321 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample | |
8322 | ||
8323 | ||
8324 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8325 | successful. this function will go into the svg_type structure, and | |
8326 | the prototype thus needs to be compatible with that structure. */ | |
8327 | ||
8328 | static int | |
8329 | svg_load (f, img) | |
8330 | struct frame *f; | |
8331 | struct image *img; | |
8332 | { | |
8333 | int success_p = 0; | |
8334 | Lisp_Object file_name; | |
8335 | ||
8336 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8337 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8338 | if (STRINGP (file_name)) | |
8339 | { | |
8340 | Lisp_Object file; | |
8341 | unsigned char *contents; | |
8342 | int size; | |
8343 | struct gcpro gcpro1; | |
8344 | ||
8345 | file = x_find_image_file (file_name); | |
8346 | GCPRO1 (file); | |
8347 | if (!STRINGP (file)) | |
c21e6151 YM |
8348 | { |
8349 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
8350 | UNGCPRO; | |
8351 | return 0; | |
8352 | } | |
8353 | ||
4ab27a43 GM |
8354 | /* Read the entire file into memory. */ |
8355 | contents = slurp_file (SDATA (file), &size); | |
8356 | if (contents == NULL) | |
c21e6151 YM |
8357 | { |
8358 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
8359 | UNGCPRO; | |
8360 | return 0; | |
8361 | } | |
4ab27a43 | 8362 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8363 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 GM |
8364 | xfree (contents); |
8365 | UNGCPRO; | |
8366 | } | |
8367 | /* Else its not a file, its a lisp object. Load the image from a | |
8368 | lisp object rather than a file. */ | |
8369 | else | |
8370 | { | |
8371 | Lisp_Object data; | |
8372 | ||
8373 | data = image_spec_value (img->spec, QCdata, NULL); | |
8374 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); | |
8375 | } | |
8376 | ||
8377 | return success_p; | |
8378 | } | |
8379 | ||
8380 | /* svg_load_image is a helper function for svg_load, which does the actual | |
8381 | loading given contents and size, apart from frame and image | |
8382 | structures, passed from svg_load. | |
8383 | ||
8384 | Uses librsvg to do most of the image processing. | |
c21e6151 | 8385 | |
4ab27a43 GM |
8386 | Returns non-zero when sucessful. */ |
8387 | static int | |
8388 | svg_load_image (f, img, contents, size) | |
8389 | /* Pointer to emacs frame sturcture. */ | |
8390 | struct frame *f; | |
8391 | /* Pointer to emacs image structure. */ | |
8392 | struct image *img; | |
8393 | /* String containing the SVG XML data to be parsed. */ | |
8394 | unsigned char *contents; | |
8395 | /* Size of data in bytes. */ | |
8396 | unsigned int size; | |
8397 | { | |
8398 | RsvgHandle *rsvg_handle; | |
8399 | GError *error = NULL; | |
8400 | GdkPixbuf *pixbuf; | |
8401 | int width; | |
8402 | int height; | |
8403 | const guint8 *pixels; | |
8404 | int rowstride; | |
8405 | XImagePtr ximg; | |
c21e6151 | 8406 | Lisp_Object specified_bg; |
4ab27a43 GM |
8407 | XColor background; |
8408 | int x; | |
8409 | int y; | |
8410 | ||
8411 | /* g_type_init is a glib function that must be called prior to using | |
8412 | gnome type library functions. */ | |
8413 | g_type_init (); | |
8414 | /* Make a handle to a new rsvg object. */ | |
8415 | rsvg_handle = fn_rsvg_handle_new (); | |
8416 | ||
8417 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
8418 | fn_rsvg_handle_write (rsvg_handle, contents, size, &error); | |
8419 | if (error) | |
8420 | goto rsvg_error; | |
8421 | ||
8422 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8423 | for further writes. */ | |
8424 | fn_rsvg_handle_close (rsvg_handle, &error); | |
8425 | if (error) | |
8426 | goto rsvg_error; | |
8427 | /* We can now get a valid pixel buffer from the svg file, if all | |
8428 | went ok. */ | |
8429 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); | |
8430 | eassert (pixbuf); | |
8431 | ||
8432 | /* Extract some meta data from the svg handle. */ | |
8433 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8434 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
8435 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); | |
8436 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); | |
8437 | ||
8438 | /* Validate the svg meta data. */ | |
8439 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8440 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8441 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8442 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8443 | ||
8444 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8445 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8446 | { | |
8447 | g_object_unref (pixbuf); | |
8448 | return 0; | |
8449 | } | |
4ab27a43 GM |
8450 | |
8451 | init_color_table (); | |
8452 | ||
c21e6151 YM |
8453 | /* Handle alpha channel by combining the image with a background |
8454 | color. */ | |
8455 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8456 | if (STRINGP (specified_bg) | |
8457 | && x_defined_color (f, SDATA (specified_bg), &background, 0)) | |
8458 | { | |
8459 | background.red >>= 8; | |
8460 | background.green >>= 8; | |
8461 | background.blue >>= 8; | |
8462 | } | |
8463 | else | |
8464 | { | |
4ab27a43 | 8465 | #ifdef HAVE_X_WINDOWS |
c21e6151 YM |
8466 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8467 | x_query_color (f, &background); | |
8468 | ||
8469 | /* SVG pixmaps specify transparency in the last byte, so right | |
8470 | shift 8 bits to get rid of it, since emacs doesnt support | |
8471 | transparency. */ | |
8472 | background.red >>= 8; | |
8473 | background.green >>= 8; | |
8474 | background.blue >>= 8; | |
8475 | #elif defined (MAC_OS) | |
8476 | background.pixel = FRAME_BACKGROUND_PIXEL (f); | |
8477 | background.red = RED_FROM_ULONG (background.pixel); | |
8478 | background.green = GREEN_FROM_ULONG (background.pixel); | |
8479 | background.blue = BLUE_FROM_ULONG (background.pixel); | |
8480 | #else /* not HAVE_X_WINDOWS && not MAC_OS*/ | |
4ab27a43 GM |
8481 | #error FIXME |
8482 | #endif | |
c21e6151 | 8483 | } |
4ab27a43 GM |
8484 | |
8485 | /* This loop handles opacity values, since Emacs assumes | |
8486 | non-transparent images. Each pixel must be "flattened" by | |
8487 | calculating he resulting color, given the transparency of the | |
8488 | pixel, and the image background color. */ | |
8489 | for (y = 0; y < height; ++y) | |
8490 | { | |
8491 | for (x = 0; x < width; ++x) | |
8492 | { | |
8493 | unsigned red; | |
8494 | unsigned green; | |
8495 | unsigned blue; | |
8496 | unsigned opacity; | |
8497 | ||
8498 | red = *pixels++; | |
8499 | green = *pixels++; | |
8500 | blue = *pixels++; | |
8501 | opacity = *pixels++; | |
8502 | ||
8503 | red = ((red * opacity) | |
8504 | + (background.red * ((1 << 8) - opacity))); | |
8505 | green = ((green * opacity) | |
8506 | + (background.green * ((1 << 8) - opacity))); | |
8507 | blue = ((blue * opacity) | |
8508 | + (background.blue * ((1 << 8) - opacity))); | |
8509 | ||
8510 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8511 | } | |
8512 | ||
8513 | pixels += rowstride - 4 * width; | |
8514 | } | |
8515 | ||
8516 | #ifdef COLOR_TABLE_SUPPORT | |
8517 | /* Remember colors allocated for this image. */ | |
8518 | img->colors = colors_in_color_table (&img->ncolors); | |
8519 | free_color_table (); | |
8520 | #endif /* COLOR_TABLE_SUPPORT */ | |
8521 | ||
8522 | g_object_unref (pixbuf); | |
8523 | ||
c21e6151 YM |
8524 | img->width = width; |
8525 | img->height = height; | |
8526 | ||
8527 | /* Maybe fill in the background field while we have ximg handy. | |
8528 | Casting avoids a GCC warning. */ | |
8529 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8530 | ||
4ab27a43 GM |
8531 | /* Put the image into the pixmap, then free the X image and its |
8532 | buffer. */ | |
8533 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8534 | x_destroy_x_image (ximg); | |
8535 | ||
4ab27a43 GM |
8536 | return 1; |
8537 | ||
8538 | rsvg_error: | |
8539 | /* FIXME: Use error->message so the user knows what is the actual | |
8540 | problem with the image. */ | |
8541 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
8542 | g_error_free (error); | |
8543 | return 0; | |
8544 | } | |
8545 | ||
8546 | #endif /* defined (HAVE_RSVG) */ | |
8547 | ||
8548 | ||
8549 | ||
4ef0d4d0 KS |
8550 | \f |
8551 | /*********************************************************************** | |
8552 | Ghostscript | |
8553 | ***********************************************************************/ | |
8554 | ||
8555 | #ifdef HAVE_X_WINDOWS | |
8556 | #define HAVE_GHOSTSCRIPT 1 | |
8557 | #endif /* HAVE_X_WINDOWS */ | |
8558 | ||
8559 | /* The symbol `postscript' identifying images of this type. */ | |
8560 | ||
8561 | Lisp_Object Qpostscript; | |
8562 | ||
8563 | #ifdef HAVE_GHOSTSCRIPT | |
8564 | ||
8565 | static int gs_image_p P_ ((Lisp_Object object)); | |
8566 | static int gs_load P_ ((struct frame *f, struct image *img)); | |
8567 | static void gs_clear_image P_ ((struct frame *f, struct image *img)); | |
8568 | ||
8569 | /* Keyword symbols. */ | |
8570 | ||
8571 | Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; | |
8572 | ||
8573 | /* Indices of image specification fields in gs_format, below. */ | |
8574 | ||
8575 | enum gs_keyword_index | |
8576 | { | |
8577 | GS_TYPE, | |
8578 | GS_PT_WIDTH, | |
8579 | GS_PT_HEIGHT, | |
8580 | GS_FILE, | |
8581 | GS_LOADER, | |
8582 | GS_BOUNDING_BOX, | |
8583 | GS_ASCENT, | |
8584 | GS_MARGIN, | |
8585 | GS_RELIEF, | |
8586 | GS_ALGORITHM, | |
8587 | GS_HEURISTIC_MASK, | |
8588 | GS_MASK, | |
8589 | GS_BACKGROUND, | |
8590 | GS_LAST | |
8591 | }; | |
8592 | ||
8593 | /* Vector of image_keyword structures describing the format | |
8594 | of valid user-defined image specifications. */ | |
8595 | ||
8596 | static struct image_keyword gs_format[GS_LAST] = | |
8597 | { | |
8598 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8599 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8600 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8601 | {":file", IMAGE_STRING_VALUE, 1}, | |
8602 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8603 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8604 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8605 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8606 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8607 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8608 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8609 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8610 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8611 | }; | |
8612 | ||
8613 | /* Structure describing the image type `ghostscript'. */ | |
8614 | ||
8615 | static struct image_type gs_type = | |
8616 | { | |
8617 | &Qpostscript, | |
8618 | gs_image_p, | |
8619 | gs_load, | |
8620 | gs_clear_image, | |
8621 | NULL | |
8622 | }; | |
8623 | ||
8624 | ||
8625 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8626 | ||
8627 | static void | |
8628 | gs_clear_image (f, img) | |
8629 | struct frame *f; | |
8630 | struct image *img; | |
8631 | { | |
8632 | /* IMG->data.ptr_val may contain a recorded colormap. */ | |
8633 | xfree (img->data.ptr_val); | |
8634 | x_clear_image (f, img); | |
8635 | } | |
8636 | ||
8637 | ||
8638 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8639 | specification. */ | |
8640 | ||
8641 | static int | |
8642 | gs_image_p (object) | |
8643 | Lisp_Object object; | |
8644 | { | |
8645 | struct image_keyword fmt[GS_LAST]; | |
8646 | Lisp_Object tem; | |
8647 | int i; | |
8648 | ||
8649 | bcopy (gs_format, fmt, sizeof fmt); | |
8650 | ||
8651 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8652 | return 0; | |
8653 | ||
8654 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8655 | tem = fmt[GS_BOUNDING_BOX].value; | |
8656 | if (CONSP (tem)) | |
8657 | { | |
8658 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8659 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8660 | return 0; | |
8661 | if (!NILP (tem)) | |
8662 | return 0; | |
8663 | } | |
8664 | else if (VECTORP (tem)) | |
8665 | { | |
8666 | if (XVECTOR (tem)->size != 4) | |
8667 | return 0; | |
8668 | for (i = 0; i < 4; ++i) | |
8669 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8670 | return 0; | |
8671 | } | |
8672 | else | |
8673 | return 0; | |
8674 | ||
8675 | return 1; | |
8676 | } | |
8677 | ||
8678 | ||
8679 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8680 | if successful. */ | |
8681 | ||
8682 | static int | |
8683 | gs_load (f, img) | |
8684 | struct frame *f; | |
8685 | struct image *img; | |
8686 | { | |
8687 | char buffer[100]; | |
8688 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; | |
8689 | struct gcpro gcpro1, gcpro2; | |
8690 | Lisp_Object frame; | |
8691 | double in_width, in_height; | |
8692 | Lisp_Object pixel_colors = Qnil; | |
8693 | ||
8694 | /* Compute pixel size of pixmap needed from the given size in the | |
8695 | image specification. Sizes in the specification are in pt. 1 pt | |
8696 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8697 | info. */ | |
8698 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
8699 | in_width = XFASTINT (pt_width) / 72.0; | |
8700 | img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx; | |
8701 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); | |
8702 | in_height = XFASTINT (pt_height) / 72.0; | |
8703 | img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy; | |
8704 | ||
f1f25b99 CY |
8705 | if (!check_image_size (f, img->width, img->height)) |
8706 | { | |
8707 | image_error ("Invalid image size", Qnil, Qnil); | |
8708 | return 0; | |
8709 | } | |
8710 | ||
4ef0d4d0 KS |
8711 | /* Create the pixmap. */ |
8712 | xassert (img->pixmap == NO_PIXMAP); | |
8713 | ||
8714 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8715 | BLOCK_INPUT; | |
8716 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8717 | img->width, img->height, | |
8718 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8719 | UNBLOCK_INPUT; | |
8720 | ||
8721 | if (!img->pixmap) | |
8722 | { | |
8723 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8724 | return 0; | |
8725 | } | |
8726 | ||
8727 | /* Call the loader to fill the pixmap. It returns a process object | |
8728 | if successful. We do not record_unwind_protect here because | |
8729 | other places in redisplay like calling window scroll functions | |
8730 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
8731 | GCPRO2 (window_and_pixmap_id, pixel_colors); | |
8732 | ||
8733 | sprintf (buffer, "%lu %lu", | |
8734 | (unsigned long) FRAME_X_WINDOW (f), | |
8735 | (unsigned long) img->pixmap); | |
8736 | window_and_pixmap_id = build_string (buffer); | |
8737 | ||
8738 | sprintf (buffer, "%lu %lu", | |
8739 | FRAME_FOREGROUND_PIXEL (f), | |
8740 | FRAME_BACKGROUND_PIXEL (f)); | |
8741 | pixel_colors = build_string (buffer); | |
8742 | ||
8743 | XSETFRAME (frame, f); | |
8744 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8745 | if (NILP (loader)) | |
8746 | loader = intern ("gs-load-image"); | |
8747 | ||
8748 | img->data.lisp_val = call6 (loader, frame, img->spec, | |
8749 | make_number (img->width), | |
8750 | make_number (img->height), | |
8751 | window_and_pixmap_id, | |
8752 | pixel_colors); | |
8753 | UNGCPRO; | |
8754 | return PROCESSP (img->data.lisp_val); | |
8755 | } | |
8756 | ||
8757 | ||
8758 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8759 | frame F. Called from XTread_socket when receiving an event | |
8760 | telling Emacs that Ghostscript has finished drawing. */ | |
8761 | ||
8762 | void | |
8763 | x_kill_gs_process (pixmap, f) | |
8764 | Pixmap pixmap; | |
8765 | struct frame *f; | |
8766 | { | |
8767 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
8768 | int class, i; | |
8769 | struct image *img; | |
8770 | ||
8771 | /* Find the image containing PIXMAP. */ | |
8772 | for (i = 0; i < c->used; ++i) | |
8773 | if (c->images[i]->pixmap == pixmap) | |
8774 | break; | |
8775 | ||
8776 | /* Should someone in between have cleared the image cache, for | |
8777 | instance, give up. */ | |
8778 | if (i == c->used) | |
8779 | return; | |
8780 | ||
8781 | /* Kill the GS process. We should have found PIXMAP in the image | |
8782 | cache and its image should contain a process object. */ | |
8783 | img = c->images[i]; | |
8784 | xassert (PROCESSP (img->data.lisp_val)); | |
8785 | Fkill_process (img->data.lisp_val, Qnil); | |
8786 | img->data.lisp_val = Qnil; | |
8787 | ||
8788 | #if defined (HAVE_X_WINDOWS) | |
8789 | ||
8790 | /* On displays with a mutable colormap, figure out the colors | |
8791 | allocated for the image by looking at the pixels of an XImage for | |
8792 | img->pixmap. */ | |
8793 | class = FRAME_X_VISUAL (f)->class; | |
8794 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8795 | { | |
8796 | XImagePtr ximg; | |
8797 | ||
8798 | BLOCK_INPUT; | |
8799 | ||
8800 | /* Try to get an XImage for img->pixmep. */ | |
8801 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8802 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8803 | if (ximg) | |
8804 | { | |
8805 | int x, y; | |
8806 | ||
8807 | /* Initialize the color table. */ | |
8808 | init_color_table (); | |
8809 | ||
8810 | /* For each pixel of the image, look its color up in the | |
8811 | color table. After having done so, the color table will | |
8812 | contain an entry for each color used by the image. */ | |
8813 | for (y = 0; y < img->height; ++y) | |
8814 | for (x = 0; x < img->width; ++x) | |
8815 | { | |
8816 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8817 | lookup_pixel_color (f, pixel); | |
8818 | } | |
8819 | ||
8820 | /* Record colors in the image. Free color table and XImage. */ | |
8821 | #ifdef COLOR_TABLE_SUPPORT | |
8822 | img->colors = colors_in_color_table (&img->ncolors); | |
8823 | free_color_table (); | |
8824 | #endif | |
8825 | XDestroyImage (ximg); | |
8826 | ||
8827 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8828 | here, we get a BadAccess later in x_clear_image when | |
8829 | freeing the colors. */ | |
8830 | /* We have allocated colors once, but Ghostscript has also | |
8831 | allocated colors on behalf of us. So, to get the | |
8832 | reference counts right, free them once. */ | |
8833 | if (img->ncolors) | |
8834 | x_free_colors (f, img->colors, img->ncolors); | |
8835 | #endif | |
8836 | } | |
8837 | else | |
8838 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8839 | img->spec, Qnil); | |
8840 | ||
8841 | UNBLOCK_INPUT; | |
8842 | } | |
8843 | #endif /* HAVE_X_WINDOWS */ | |
8844 | ||
8845 | /* Now that we have the pixmap, compute mask and transform the | |
8846 | image if requested. */ | |
8847 | BLOCK_INPUT; | |
8848 | postprocess_image (f, img); | |
8849 | UNBLOCK_INPUT; | |
8850 | } | |
8851 | ||
8852 | #endif /* HAVE_GHOSTSCRIPT */ | |
8853 | ||
8854 | \f | |
8855 | /*********************************************************************** | |
8856 | Tests | |
8857 | ***********************************************************************/ | |
8858 | ||
8859 | #if GLYPH_DEBUG | |
8860 | ||
8861 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, | |
8862 | doc: /* Value is non-nil if SPEC is a valid image specification. */) | |
8863 | (spec) | |
8864 | Lisp_Object spec; | |
8865 | { | |
8866 | return valid_image_p (spec) ? Qt : Qnil; | |
8867 | } | |
8868 | ||
8869 | ||
8870 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") | |
8871 | (spec) | |
8872 | Lisp_Object spec; | |
8873 | { | |
8874 | int id = -1; | |
8875 | ||
8876 | if (valid_image_p (spec)) | |
8877 | id = lookup_image (SELECTED_FRAME (), spec); | |
8878 | ||
8879 | debug_print (spec); | |
8880 | return make_number (id); | |
8881 | } | |
8882 | ||
8883 | #endif /* GLYPH_DEBUG != 0 */ | |
8884 | ||
8885 | ||
8886 | /*********************************************************************** | |
8887 | Initialization | |
8888 | ***********************************************************************/ | |
8889 | ||
0855eb52 JB |
8890 | #ifdef HAVE_NTGUI |
8891 | /* Image types that rely on external libraries are loaded dynamically | |
8892 | if the library is available. */ | |
adac86db | 8893 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8894 | define_image_type (image_type, init_lib_fn (libraries)) |
8895 | #else | |
adac86db | 8896 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8897 | define_image_type (image_type, 1) |
0855eb52 JB |
8898 | #endif /* HAVE_NTGUI */ |
8899 | ||
8900 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8901 | doc: /* Initialize image library implementing image type TYPE. | |
8902 | Return non-nil if TYPE is a supported image type. | |
8903 | ||
8904 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8905 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
adac86db | 8906 | of `image-library-alist', which see). */) |
0855eb52 | 8907 | (type, libraries) |
adac86db | 8908 | Lisp_Object type, libraries; |
0855eb52 JB |
8909 | { |
8910 | Lisp_Object tested; | |
8911 | ||
8912 | /* Don't try to reload the library. */ | |
8913 | tested = Fassq (type, Vimage_type_cache); | |
8914 | if (CONSP (tested)) | |
8915 | return XCDR (tested); | |
8916 | ||
8917 | #if defined (HAVE_XPM) || defined (MAC_OS) | |
8918 | if (EQ (type, Qxpm)) | |
adac86db | 8919 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8920 | #endif |
8921 | ||
8922 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
8923 | if (EQ (type, Qjpeg)) | |
adac86db | 8924 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8925 | #endif |
8926 | ||
8927 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
8928 | if (EQ (type, Qtiff)) | |
adac86db | 8929 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8930 | #endif |
8931 | ||
8932 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
8933 | if (EQ (type, Qgif)) | |
adac86db | 8934 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8935 | #endif |
8936 | ||
8937 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
8938 | if (EQ (type, Qpng)) | |
adac86db | 8939 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8940 | #endif |
8941 | ||
4ab27a43 GM |
8942 | #if defined (HAVE_RSVG) |
8943 | if (EQ (type, Qsvg)) | |
8944 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
8945 | #endif | |
c21e6151 | 8946 | |
0855eb52 JB |
8947 | #ifdef HAVE_GHOSTSCRIPT |
8948 | if (EQ (type, Qpostscript)) | |
adac86db | 8949 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8950 | #endif |
8951 | ||
8952 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8953 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8954 | return Qnil; |
8955 | } | |
8956 | ||
4ef0d4d0 KS |
8957 | void |
8958 | syms_of_image () | |
8959 | { | |
2a611c1a JB |
8960 | extern Lisp_Object Qrisky_local_variable; /* Syms_of_xdisp has already run. */ |
8961 | ||
6e6fc3fd RS |
8962 | /* Initialize this only once, since that's what we do with Vimage_types |
8963 | and they are supposed to be in sync. Initializing here gives correct | |
8964 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8965 | image_types = NULL; | |
8966 | ||
0855eb52 JB |
8967 | /* Must be defined now becase we're going to update it below, while |
8968 | defining the supported image types. */ | |
8969 | DEFVAR_LISP ("image-types", &Vimage_types, | |
8970 | doc: /* List of potentially supported image types. | |
8971 | Each element of the list is a symbol for a image type, like 'jpeg or 'png. | |
8972 | To check whether it is really supported, use `image-type-available-p'. */); | |
8973 | Vimage_types = Qnil; | |
8974 | ||
2a611c1a JB |
8975 | DEFVAR_LISP ("image-library-alist", &Vimage_library_alist, |
8976 | doc: /* Alist of image types vs external libraries needed to display them. | |
8977 | ||
8978 | Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol | |
8979 | representing a supported image type, and the rest are strings giving | |
8980 | alternate filenames for the corresponding external libraries. | |
8981 | ||
8982 | Emacs tries to load the libraries in the order they appear on the | |
8983 | list; if none is loaded, the running session of Emacs won't | |
8984 | support the image type. Types 'pbm and 'xbm don't need to be | |
8985 | listed; they're always supported. */); | |
8986 | Vimage_library_alist = Qnil; | |
8987 | Fput (intern ("image-library-alist"), Qrisky_local_variable, Qt); | |
8988 | ||
f1f25b99 | 8989 | DEFVAR_LISP ("max-image-size", &Vmax_image_size, |
7df4765a KS |
8990 | doc: /* Maximum size of images. |
8991 | Emacs will not load an image into memory if its pixel width or | |
8992 | pixel height exceeds this limit. | |
8993 | ||
8994 | If the value is an integer, it directly specifies the maximum | |
8995 | image height and width, measured in pixels. If it is a floating | |
8996 | point number, it specifies the maximum image height and width | |
8997 | as a ratio to the frame height and width. If the value is | |
8998 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8999 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
9000 | ||
0855eb52 JB |
9001 | Vimage_type_cache = Qnil; |
9002 | staticpro (&Vimage_type_cache); | |
9003 | ||
7c4e3a32 RS |
9004 | Qpbm = intern ("pbm"); |
9005 | staticpro (&Qpbm); | |
9006 | ADD_IMAGE_TYPE(Qpbm); | |
9007 | ||
9008 | Qxbm = intern ("xbm"); | |
9009 | staticpro (&Qxbm); | |
9010 | ADD_IMAGE_TYPE(Qxbm); | |
9011 | ||
9012 | define_image_type (&xbm_type, 1); | |
9013 | define_image_type (&pbm_type, 1); | |
9014 | ||
4ef0d4d0 KS |
9015 | QCascent = intern (":ascent"); |
9016 | staticpro (&QCascent); | |
9017 | QCmargin = intern (":margin"); | |
9018 | staticpro (&QCmargin); | |
9019 | QCrelief = intern (":relief"); | |
9020 | staticpro (&QCrelief); | |
9021 | QCconversion = intern (":conversion"); | |
9022 | staticpro (&QCconversion); | |
9023 | QCcolor_symbols = intern (":color-symbols"); | |
9024 | staticpro (&QCcolor_symbols); | |
9025 | QCheuristic_mask = intern (":heuristic-mask"); | |
9026 | staticpro (&QCheuristic_mask); | |
9027 | QCindex = intern (":index"); | |
9028 | staticpro (&QCindex); | |
9029 | QCmatrix = intern (":matrix"); | |
9030 | staticpro (&QCmatrix); | |
9031 | QCcolor_adjustment = intern (":color-adjustment"); | |
9032 | staticpro (&QCcolor_adjustment); | |
9033 | QCmask = intern (":mask"); | |
9034 | staticpro (&QCmask); | |
9035 | ||
9036 | Qlaplace = intern ("laplace"); | |
9037 | staticpro (&Qlaplace); | |
9038 | Qemboss = intern ("emboss"); | |
9039 | staticpro (&Qemboss); | |
9040 | Qedge_detection = intern ("edge-detection"); | |
9041 | staticpro (&Qedge_detection); | |
9042 | Qheuristic = intern ("heuristic"); | |
9043 | staticpro (&Qheuristic); | |
4ef0d4d0 KS |
9044 | |
9045 | Qpostscript = intern ("postscript"); | |
9046 | staticpro (&Qpostscript); | |
9047 | #ifdef HAVE_GHOSTSCRIPT | |
0855eb52 | 9048 | ADD_IMAGE_TYPE(Qpostscript); |
4ef0d4d0 KS |
9049 | QCloader = intern (":loader"); |
9050 | staticpro (&QCloader); | |
9051 | QCbounding_box = intern (":bounding-box"); | |
9052 | staticpro (&QCbounding_box); | |
9053 | QCpt_width = intern (":pt-width"); | |
9054 | staticpro (&QCpt_width); | |
9055 | QCpt_height = intern (":pt-height"); | |
9056 | staticpro (&QCpt_height); | |
9057 | #endif /* HAVE_GHOSTSCRIPT */ | |
9058 | ||
ea1aaa6f | 9059 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
9060 | Qxpm = intern ("xpm"); |
9061 | staticpro (&Qxpm); | |
0855eb52 | 9062 | ADD_IMAGE_TYPE(Qxpm); |
4ef0d4d0 KS |
9063 | #endif |
9064 | ||
9065 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
9066 | Qjpeg = intern ("jpeg"); | |
9067 | staticpro (&Qjpeg); | |
0855eb52 | 9068 | ADD_IMAGE_TYPE(Qjpeg); |
4ef0d4d0 KS |
9069 | #endif |
9070 | ||
9071 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
9072 | Qtiff = intern ("tiff"); | |
9073 | staticpro (&Qtiff); | |
0855eb52 | 9074 | ADD_IMAGE_TYPE(Qtiff); |
4ef0d4d0 KS |
9075 | #endif |
9076 | ||
9077 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
9078 | Qgif = intern ("gif"); | |
9079 | staticpro (&Qgif); | |
0855eb52 | 9080 | ADD_IMAGE_TYPE(Qgif); |
4ef0d4d0 KS |
9081 | #endif |
9082 | ||
9083 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
9084 | Qpng = intern ("png"); | |
9085 | staticpro (&Qpng); | |
0855eb52 | 9086 | ADD_IMAGE_TYPE(Qpng); |
4ef0d4d0 KS |
9087 | #endif |
9088 | ||
4ab27a43 GM |
9089 | #if defined (HAVE_RSVG) |
9090 | Qsvg = intern ("svg"); | |
9091 | staticpro (&Qsvg); | |
9092 | ADD_IMAGE_TYPE(Qsvg); | |
9093 | #endif | |
9094 | ||
0855eb52 | 9095 | defsubr (&Sinit_image_library); |
4ef0d4d0 | 9096 | defsubr (&Sclear_image_cache); |
483e7ae0 | 9097 | defsubr (&Simage_refresh); |
4ef0d4d0 KS |
9098 | defsubr (&Simage_size); |
9099 | defsubr (&Simage_mask_p); | |
6ac3c7bb | 9100 | defsubr (&Simage_extension_data); |
4ef0d4d0 KS |
9101 | |
9102 | #if GLYPH_DEBUG | |
9103 | defsubr (&Simagep); | |
9104 | defsubr (&Slookup_image); | |
9105 | #endif | |
9106 | ||
9107 | DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images, | |
9108 | doc: /* Non-nil means always draw a cross over disabled images. | |
9109 | Disabled images are those having an `:conversion disabled' property. | |
9110 | A cross is always drawn on black & white displays. */); | |
9111 | cross_disabled_images = 0; | |
9112 | ||
9113 | DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path, | |
9114 | doc: /* List of directories to search for window system bitmap files. */); | |
9115 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
9116 | ||
9117 | DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay, | |
9118 | doc: /* Time after which cached images are removed from the cache. | |
9119 | When an image has not been displayed this many seconds, remove it | |
9120 | from the image cache. Value must be an integer or nil with nil | |
9121 | meaning don't clear the cache. */); | |
9122 | Vimage_cache_eviction_delay = make_number (30 * 60); | |
9123 | } | |
9124 | ||
4ef0d4d0 KS |
9125 | void |
9126 | init_image () | |
9127 | { | |
dac5344b | 9128 | #if defined (MAC_OSX) && TARGET_API_MAC_CARBON |
4ef0d4d0 KS |
9129 | init_image_func_pointer (); |
9130 | #endif | |
4ef0d4d0 KS |
9131 | } |
9132 | ||
1b9f8cec MB |
9133 | /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9 |
9134 | (do not change this comment) */ |