Commit | Line | Data |
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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, |
aaef169d | 3 | 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
4ef0d4d0 KS |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
4ef0d4d0 KS |
21 | |
22 | #include <config.h> | |
4ef0d4d0 KS |
23 | #include <stdio.h> |
24 | #include <math.h> | |
be8c4ce4 | 25 | #include <ctype.h> |
4ef0d4d0 KS |
26 | |
27 | #ifdef HAVE_UNISTD_H | |
28 | #include <unistd.h> | |
29 | #endif | |
30 | ||
31 | /* This makes the fields of a Display accessible, in Xlib header files. */ | |
32 | ||
33 | #define XLIB_ILLEGAL_ACCESS | |
34 | ||
35 | #include "lisp.h" | |
36 | #include "frame.h" | |
37 | #include "window.h" | |
38 | #include "dispextern.h" | |
39 | #include "blockinput.h" | |
40 | #include "systime.h" | |
41 | #include <epaths.h> | |
022af124 KH |
42 | #include "charset.h" |
43 | #include "coding.h" | |
4ef0d4d0 KS |
44 | |
45 | ||
46 | #ifdef HAVE_X_WINDOWS | |
47 | #include "xterm.h" | |
48 | #include <sys/types.h> | |
49 | #include <sys/stat.h> | |
50 | ||
51 | #define COLOR_TABLE_SUPPORT 1 | |
52 | ||
53 | typedef struct x_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
54 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) |
55 | #define NO_PIXMAP None | |
4ef0d4d0 KS |
56 | |
57 | #define RGB_PIXEL_COLOR unsigned long | |
58 | ||
9ecf6403 YM |
59 | #define PIX_MASK_RETAIN 0 |
60 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
61 | #endif /* HAVE_X_WINDOWS */ |
62 | ||
63 | ||
64 | #ifdef HAVE_NTGUI | |
65 | #include "w32term.h" | |
66 | ||
67 | /* W32_TODO : Color tables on W32. */ | |
68 | #undef COLOR_TABLE_SUPPORT | |
69 | ||
70 | typedef struct w32_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
71 | #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y) |
72 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
73 | |
74 | #define RGB_PIXEL_COLOR COLORREF | |
75 | ||
9ecf6403 YM |
76 | #define PIX_MASK_RETAIN 0 |
77 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
78 | |
79 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual | |
80 | #define x_defined_color w32_defined_color | |
81 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
82 | #endif /* HAVE_NTGUI */ | |
83 | ||
84 | ||
85 | #ifdef MAC_OS | |
86 | #include "macterm.h" | |
b15325b2 | 87 | #include <sys/stat.h> |
4ef0d4d0 KS |
88 | #ifndef MAC_OSX |
89 | #include <alloca.h> | |
b15325b2 | 90 | #include <sys/param.h> |
4ef0d4d0 | 91 | #endif |
d45b2e9e | 92 | #if TARGET_API_MAC_CARBON |
4ef0d4d0 KS |
93 | #ifdef MAC_OSX |
94 | #include <QuickTime/QuickTime.h> | |
d45b2e9e YM |
95 | #else /* not MAC_OSX */ |
96 | #include <QuickTime.h> | |
97 | #endif /* not MAC_OSX */ | |
98 | #else /* not TARGET_API_MAC_CARBON */ | |
4ef0d4d0 KS |
99 | #include <Windows.h> |
100 | #include <Gestalt.h> | |
101 | #include <TextUtils.h> | |
b15325b2 ST |
102 | #include <ImageCompression.h> |
103 | #include <QuickTimeComponents.h> | |
d45b2e9e | 104 | #endif /* not TARGET_API_MAC_CARBON */ |
4ef0d4d0 KS |
105 | |
106 | /* MAC_TODO : Color tables on Mac. */ | |
107 | #undef COLOR_TABLE_SUPPORT | |
108 | ||
4ef0d4d0 KS |
109 | #define ZPixmap 0 /* arbitrary */ |
110 | typedef struct mac_bitmap_record Bitmap_Record; | |
111 | ||
4ef0d4d0 KS |
112 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) |
113 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
114 | |
115 | #define RGB_PIXEL_COLOR unsigned long | |
116 | ||
9ecf6403 YM |
117 | /* A black pixel in a mask bitmap/pixmap means ``draw a source |
118 | pixel''. A white pixel means ``retain the current pixel''. */ | |
119 | #define PIX_MASK_DRAW RGB_TO_ULONG(0,0,0) | |
120 | #define PIX_MASK_RETAIN RGB_TO_ULONG(255,255,255) | |
121 | ||
4ef0d4d0 KS |
122 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual |
123 | #define x_defined_color mac_defined_color | |
124 | #define DefaultDepthOfScreen(screen) (one_mac_display_info.n_planes) | |
125 | #define XDrawLine(display, w, gc, x1, y1, x2, y2) \ | |
126 | mac_draw_line_to_pixmap(display, w, gc, x1, y1, x2, y2) | |
127 | ||
128 | #endif /* MAC_OS */ | |
129 | ||
130 | ||
131 | /* Search path for bitmap files. */ | |
132 | ||
133 | Lisp_Object Vx_bitmap_file_path; | |
134 | ||
135 | ||
136 | static void x_disable_image P_ ((struct frame *, struct image *)); | |
137 | static void x_edge_detection P_ ((struct frame *, struct image *, Lisp_Object, | |
138 | Lisp_Object)); | |
139 | ||
140 | static void init_color_table P_ ((void)); | |
141 | static unsigned long lookup_rgb_color P_ ((struct frame *f, int r, int g, int b)); | |
142 | #ifdef COLOR_TABLE_SUPPORT | |
143 | static void free_color_table P_ ((void)); | |
144 | static unsigned long *colors_in_color_table P_ ((int *n)); | |
145 | static unsigned long lookup_pixel_color P_ ((struct frame *f, unsigned long p)); | |
146 | #endif | |
147 | ||
148 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
149 | id, which is just an int that this section returns. Bitmaps are | |
150 | reference counted so they can be shared among frames. | |
151 | ||
152 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
153 | be used to indicate no bitmap. | |
154 | ||
155 | If you use x_create_bitmap_from_data, then you must keep track of | |
156 | the bitmaps yourself. That is, creating a bitmap from the same | |
157 | data more than once will not be caught. */ | |
158 | ||
159 | #ifdef MAC_OS | |
160 | ||
161 | static XImagePtr | |
162 | XGetImage (display, pixmap, x, y, width, height, plane_mask, format) | |
163 | Display *display; /* not used */ | |
164 | Pixmap pixmap; | |
165 | int x, y; /* not used */ | |
166 | unsigned int width, height; /* not used */ | |
167 | unsigned long plane_mask; /* not used */ | |
168 | int format; /* not used */ | |
169 | { | |
170 | #if GLYPH_DEBUG | |
171 | xassert (x == 0 && y == 0); | |
172 | { | |
173 | Rect ri, rp; | |
174 | SetRect (&ri, 0, 0, width, height); | |
175 | xassert (EqualRect (&ri, GetPixBounds (GetGWorldPixMap (pixmap), &rp))); | |
176 | } | |
177 | xassert (! (pixelsLocked & GetPixelsState (GetGWorldPixMap (pixmap)))); | |
178 | #endif | |
179 | ||
180 | LockPixels (GetGWorldPixMap (pixmap)); | |
181 | ||
182 | return pixmap; | |
183 | } | |
184 | ||
185 | static void | |
186 | XPutPixel (ximage, x, y, pixel) | |
187 | XImagePtr ximage; | |
188 | int x, y; | |
189 | unsigned long pixel; | |
190 | { | |
9ecf6403 YM |
191 | PixMapHandle pixmap = GetGWorldPixMap (ximage); |
192 | short depth = GetPixDepth (pixmap); | |
193 | ||
c7fea325 | 194 | #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING |
9ecf6403 YM |
195 | if (depth == 32) |
196 | { | |
197 | char *base_addr = GetPixBaseAddr (pixmap); | |
198 | short row_bytes = GetPixRowBytes (pixmap); | |
199 | ||
4cdffedf | 200 | ((unsigned long *) (base_addr + y * row_bytes))[x] = 0xff000000 | pixel; |
9ecf6403 | 201 | } |
c7fea325 YM |
202 | else |
203 | #endif | |
204 | if (depth == 1) | |
9ecf6403 YM |
205 | { |
206 | char *base_addr = GetPixBaseAddr (pixmap); | |
207 | short row_bytes = GetPixRowBytes (pixmap); | |
208 | ||
209 | if (pixel == PIX_MASK_DRAW) | |
210 | base_addr[y * row_bytes + x / 8] |= (1 << 7) >> (x & 7); | |
211 | else | |
212 | base_addr[y * row_bytes + x / 8] &= ~((1 << 7) >> (x & 7)); | |
213 | } | |
214 | else | |
215 | { | |
216 | CGrafPtr old_port; | |
217 | GDHandle old_gdh; | |
218 | RGBColor color; | |
219 | ||
220 | GetGWorld (&old_port, &old_gdh); | |
221 | SetGWorld (ximage, NULL); | |
4ef0d4d0 | 222 | |
9ecf6403 YM |
223 | color.red = RED16_FROM_ULONG (pixel); |
224 | color.green = GREEN16_FROM_ULONG (pixel); | |
225 | color.blue = BLUE16_FROM_ULONG (pixel); | |
4ef0d4d0 | 226 | |
9ecf6403 | 227 | SetCPixel (x, y, &color); |
2a316a84 | 228 | |
9ecf6403 YM |
229 | SetGWorld (old_port, old_gdh); |
230 | } | |
4ef0d4d0 KS |
231 | } |
232 | ||
233 | static unsigned long | |
234 | XGetPixel (ximage, x, y) | |
235 | XImagePtr ximage; | |
236 | int x, y; | |
237 | { | |
9ecf6403 YM |
238 | PixMapHandle pixmap = GetGWorldPixMap (ximage); |
239 | short depth = GetPixDepth (pixmap); | |
4ef0d4d0 | 240 | |
c7fea325 | 241 | #if defined (WORDS_BIG_ENDIAN) || !USE_CG_DRAWING |
9ecf6403 YM |
242 | if (depth == 32) |
243 | { | |
244 | char *base_addr = GetPixBaseAddr (pixmap); | |
245 | short row_bytes = GetPixRowBytes (pixmap); | |
246 | ||
4cdffedf | 247 | return ((unsigned long *) (base_addr + y * row_bytes))[x] & 0x00ffffff; |
9ecf6403 | 248 | } |
c7fea325 YM |
249 | else |
250 | #endif | |
251 | if (depth == 1) | |
9ecf6403 YM |
252 | { |
253 | char *base_addr = GetPixBaseAddr (pixmap); | |
254 | short row_bytes = GetPixRowBytes (pixmap); | |
4ef0d4d0 | 255 | |
9ecf6403 YM |
256 | if (base_addr[y * row_bytes + x / 8] & (1 << (~x & 7))) |
257 | return PIX_MASK_DRAW; | |
258 | else | |
259 | return PIX_MASK_RETAIN; | |
260 | } | |
261 | else | |
262 | { | |
263 | CGrafPtr old_port; | |
264 | GDHandle old_gdh; | |
265 | RGBColor color; | |
2a316a84 | 266 | |
9ecf6403 YM |
267 | GetGWorld (&old_port, &old_gdh); |
268 | SetGWorld (ximage, NULL); | |
269 | ||
270 | GetCPixel (x, y, &color); | |
271 | ||
272 | SetGWorld (old_port, old_gdh); | |
273 | return RGB_TO_ULONG (color.red >> 8, color.green >> 8, color.blue >> 8); | |
274 | } | |
4ef0d4d0 KS |
275 | } |
276 | ||
277 | static void | |
278 | XDestroyImage (ximg) | |
279 | XImagePtr ximg; | |
280 | { | |
281 | UnlockPixels (GetGWorldPixMap (ximg)); | |
282 | } | |
c7fea325 YM |
283 | |
284 | #if USE_CG_DRAWING | |
285 | static CGImageRef | |
286 | mac_create_cg_image_from_image (f, img) | |
287 | struct frame *f; | |
288 | struct image *img; | |
289 | { | |
290 | Pixmap mask; | |
291 | CGImageRef result = NULL; | |
292 | ||
293 | BLOCK_INPUT; | |
294 | if (img->mask) | |
295 | mask = img->mask; | |
296 | else | |
297 | { | |
298 | mask = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
299 | img->width, img->height, 1); | |
300 | if (mask) | |
301 | { | |
302 | CGrafPtr old_port; | |
303 | GDHandle old_gdh; | |
304 | Rect r; | |
305 | ||
306 | GetGWorld (&old_port, &old_gdh); | |
307 | SetGWorld (mask, NULL); | |
308 | BackColor (blackColor); /* Don't mask. */ | |
309 | SetRect (&r, 0, 0, img->width, img->height); | |
310 | EraseRect (&r); | |
311 | SetGWorld (old_port, old_gdh); | |
312 | } | |
313 | } | |
314 | if (mask) | |
315 | { | |
316 | CreateCGImageFromPixMaps (GetGWorldPixMap (img->pixmap), | |
317 | GetGWorldPixMap (mask), &result); | |
318 | if (mask != img->mask) | |
319 | XFreePixmap (FRAME_X_DISPLAY (f), mask); | |
320 | } | |
321 | UNBLOCK_INPUT; | |
322 | ||
323 | return result; | |
324 | } | |
325 | #endif /* USE_CG_DRAWING */ | |
b0da69a7 | 326 | #endif /* MAC_OS */ |
4ef0d4d0 KS |
327 | |
328 | ||
329 | /* Functions to access the contents of a bitmap, given an id. */ | |
330 | ||
331 | int | |
332 | x_bitmap_height (f, id) | |
333 | FRAME_PTR f; | |
334 | int id; | |
335 | { | |
336 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
337 | } | |
338 | ||
339 | int | |
340 | x_bitmap_width (f, id) | |
341 | FRAME_PTR f; | |
342 | int id; | |
343 | { | |
344 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
345 | } | |
346 | ||
347 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
348 | int | |
349 | x_bitmap_pixmap (f, id) | |
350 | FRAME_PTR f; | |
351 | int id; | |
352 | { | |
353 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
354 | } | |
355 | #endif | |
356 | ||
357 | #ifdef HAVE_X_WINDOWS | |
358 | int | |
359 | x_bitmap_mask (f, id) | |
360 | FRAME_PTR f; | |
361 | int id; | |
362 | { | |
363 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
364 | } | |
365 | #endif | |
366 | ||
367 | /* Allocate a new bitmap record. Returns index of new record. */ | |
368 | ||
369 | static int | |
370 | x_allocate_bitmap_record (f) | |
371 | FRAME_PTR f; | |
372 | { | |
373 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
374 | int i; | |
375 | ||
376 | if (dpyinfo->bitmaps == NULL) | |
377 | { | |
378 | dpyinfo->bitmaps_size = 10; | |
379 | dpyinfo->bitmaps | |
380 | = (Bitmap_Record *) xmalloc (dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
381 | dpyinfo->bitmaps_last = 1; | |
382 | return 1; | |
383 | } | |
384 | ||
385 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) | |
386 | return ++dpyinfo->bitmaps_last; | |
387 | ||
388 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
389 | if (dpyinfo->bitmaps[i].refcount == 0) | |
390 | return i + 1; | |
391 | ||
392 | dpyinfo->bitmaps_size *= 2; | |
393 | dpyinfo->bitmaps | |
394 | = (Bitmap_Record *) xrealloc (dpyinfo->bitmaps, | |
395 | dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
396 | return ++dpyinfo->bitmaps_last; | |
397 | } | |
398 | ||
399 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
400 | ||
401 | void | |
402 | x_reference_bitmap (f, id) | |
403 | FRAME_PTR f; | |
404 | int id; | |
405 | { | |
406 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
407 | } | |
408 | ||
409 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
410 | ||
411 | int | |
412 | x_create_bitmap_from_data (f, bits, width, height) | |
413 | struct frame *f; | |
414 | char *bits; | |
415 | unsigned int width, height; | |
416 | { | |
417 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
418 | int id; | |
419 | ||
420 | #ifdef HAVE_X_WINDOWS | |
421 | Pixmap bitmap; | |
422 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
423 | bits, width, height); | |
424 | if (! bitmap) | |
425 | return -1; | |
426 | #endif /* HAVE_X_WINDOWS */ | |
427 | ||
428 | #ifdef HAVE_NTGUI | |
429 | Pixmap bitmap; | |
430 | bitmap = CreateBitmap (width, height, | |
431 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
432 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
433 | bits); | |
434 | if (! bitmap) | |
435 | return -1; | |
436 | #endif /* HAVE_NTGUI */ | |
437 | ||
438 | #ifdef MAC_OS | |
439 | /* MAC_TODO: for now fail if width is not mod 16 (toolbox requires it) */ | |
440 | if (width % 16 != 0) | |
441 | return -1; | |
442 | #endif | |
443 | ||
444 | id = x_allocate_bitmap_record (f); | |
445 | #ifdef MAC_OS | |
446 | dpyinfo->bitmaps[id - 1].bitmap_data = (char *) xmalloc (height * width); | |
447 | if (! dpyinfo->bitmaps[id - 1].bitmap_data) | |
448 | return -1; | |
449 | bcopy (bits, dpyinfo->bitmaps[id - 1].bitmap_data, height * width); | |
450 | #endif /* MAC_OS */ | |
451 | ||
452 | dpyinfo->bitmaps[id - 1].file = NULL; | |
453 | dpyinfo->bitmaps[id - 1].height = height; | |
454 | dpyinfo->bitmaps[id - 1].width = width; | |
455 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
456 | ||
457 | #ifdef HAVE_X_WINDOWS | |
458 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
459 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
460 | dpyinfo->bitmaps[id - 1].depth = 1; | |
461 | #endif /* HAVE_X_WINDOWS */ | |
462 | ||
463 | #ifdef HAVE_NTGUI | |
464 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
465 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
466 | dpyinfo->bitmaps[id - 1].depth = 1; | |
467 | #endif /* HAVE_NTGUI */ | |
468 | ||
469 | return id; | |
470 | } | |
471 | ||
472 | /* Create bitmap from file FILE for frame F. */ | |
473 | ||
474 | int | |
475 | x_create_bitmap_from_file (f, file) | |
476 | struct frame *f; | |
477 | Lisp_Object file; | |
478 | { | |
479 | #ifdef MAC_OS | |
480 | return -1; /* MAC_TODO : bitmap support */ | |
481 | #endif /* MAC_OS */ | |
482 | ||
483 | #ifdef HAVE_NTGUI | |
484 | return -1; /* W32_TODO : bitmap support */ | |
485 | #endif /* HAVE_NTGUI */ | |
486 | ||
487 | #ifdef HAVE_X_WINDOWS | |
488 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
489 | unsigned int width, height; | |
490 | Pixmap bitmap; | |
491 | int xhot, yhot, result, id; | |
492 | Lisp_Object found; | |
493 | int fd; | |
494 | char *filename; | |
495 | ||
496 | /* Look for an existing bitmap with the same name. */ | |
497 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
498 | { | |
499 | if (dpyinfo->bitmaps[id].refcount | |
500 | && dpyinfo->bitmaps[id].file | |
501 | && !strcmp (dpyinfo->bitmaps[id].file, (char *) SDATA (file))) | |
502 | { | |
503 | ++dpyinfo->bitmaps[id].refcount; | |
504 | return id + 1; | |
505 | } | |
506 | } | |
507 | ||
508 | /* Search bitmap-file-path for the file, if appropriate. */ | |
509 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
510 | if (fd < 0) | |
511 | return -1; | |
512 | emacs_close (fd); | |
513 | ||
514 | filename = (char *) SDATA (found); | |
515 | ||
516 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
517 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
518 | if (result != BitmapSuccess) | |
519 | return -1; | |
520 | ||
521 | id = x_allocate_bitmap_record (f); | |
522 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
523 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
524 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
525 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
526 | dpyinfo->bitmaps[id - 1].depth = 1; | |
527 | dpyinfo->bitmaps[id - 1].height = height; | |
528 | dpyinfo->bitmaps[id - 1].width = width; | |
529 | strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file)); | |
530 | ||
531 | return id; | |
532 | #endif /* HAVE_X_WINDOWS */ | |
533 | } | |
534 | ||
535 | /* Free bitmap B. */ | |
536 | ||
537 | static void | |
538 | Free_Bitmap_Record (dpyinfo, bm) | |
539 | Display_Info *dpyinfo; | |
540 | Bitmap_Record *bm; | |
541 | { | |
542 | #ifdef HAVE_X_WINDOWS | |
543 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
544 | if (bm->have_mask) | |
545 | XFreePixmap (dpyinfo->display, bm->mask); | |
546 | #endif /* HAVE_X_WINDOWS */ | |
547 | ||
548 | #ifdef HAVE_NTGUI | |
549 | DeleteObject (bm->pixmap); | |
550 | #endif /* HAVE_NTGUI */ | |
551 | ||
552 | #ifdef MAC_OS | |
553 | xfree (bm->bitmap_data); /* Added ++kfs */ | |
554 | bm->bitmap_data = NULL; | |
555 | #endif /* MAC_OS */ | |
556 | ||
557 | if (bm->file) | |
558 | { | |
559 | xfree (bm->file); | |
560 | bm->file = NULL; | |
561 | } | |
562 | } | |
563 | ||
564 | /* Remove reference to bitmap with id number ID. */ | |
565 | ||
566 | void | |
567 | x_destroy_bitmap (f, id) | |
568 | FRAME_PTR f; | |
569 | int id; | |
570 | { | |
571 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
572 | ||
573 | if (id > 0) | |
574 | { | |
575 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
576 | ||
577 | if (--bm->refcount == 0) | |
578 | { | |
579 | BLOCK_INPUT; | |
580 | Free_Bitmap_Record (dpyinfo, bm); | |
581 | UNBLOCK_INPUT; | |
582 | } | |
583 | } | |
584 | } | |
585 | ||
586 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
587 | ||
588 | void | |
589 | x_destroy_all_bitmaps (dpyinfo) | |
590 | Display_Info *dpyinfo; | |
591 | { | |
592 | int i; | |
593 | Bitmap_Record *bm = dpyinfo->bitmaps; | |
594 | ||
595 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
596 | if (bm->refcount > 0) | |
597 | Free_Bitmap_Record (dpyinfo, bm); | |
598 | ||
599 | dpyinfo->bitmaps_last = 0; | |
600 | } | |
601 | ||
602 | ||
603 | #ifdef HAVE_X_WINDOWS | |
604 | ||
605 | /* Useful functions defined in the section | |
606 | `Image type independent image structures' below. */ | |
607 | ||
608 | static unsigned long four_corners_best P_ ((XImagePtr ximg, unsigned long width, | |
609 | unsigned long height)); | |
610 | ||
611 | static int x_create_x_image_and_pixmap P_ ((struct frame *f, int width, int height, | |
612 | int depth, XImagePtr *ximg, | |
613 | Pixmap *pixmap)); | |
614 | ||
615 | static void x_destroy_x_image P_ ((XImagePtr ximg)); | |
616 | ||
617 | ||
618 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
619 | It's nicer with some borders in this context */ | |
620 | ||
621 | int | |
622 | x_create_bitmap_mask (f, id) | |
623 | struct frame *f; | |
624 | int id; | |
625 | { | |
626 | Pixmap pixmap, mask; | |
627 | XImagePtr ximg, mask_img; | |
628 | unsigned long width, height; | |
629 | int result; | |
630 | unsigned long bg; | |
631 | unsigned long x, y, xp, xm, yp, ym; | |
632 | GC gc; | |
633 | ||
634 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
635 | ||
636 | if (!(id > 0)) | |
637 | return -1; | |
638 | ||
639 | pixmap = x_bitmap_pixmap (f, id); | |
640 | width = x_bitmap_width (f, id); | |
641 | height = x_bitmap_height (f, id); | |
642 | ||
643 | BLOCK_INPUT; | |
644 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
645 | ~0, ZPixmap); | |
646 | ||
647 | if (!ximg) | |
648 | { | |
649 | UNBLOCK_INPUT; | |
650 | return -1; | |
651 | } | |
652 | ||
653 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
654 | ||
655 | UNBLOCK_INPUT; | |
656 | if (!result) | |
657 | { | |
658 | XDestroyImage (ximg); | |
659 | return -1; | |
660 | } | |
661 | ||
662 | bg = four_corners_best (ximg, width, height); | |
663 | ||
664 | for (y = 0; y < ximg->height; ++y) | |
665 | { | |
666 | for (x = 0; x < ximg->width; ++x) | |
667 | { | |
668 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
669 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
670 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
671 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
672 | if (XGetPixel (ximg, x, y) == bg | |
673 | && XGetPixel (ximg, x, yp) == bg | |
674 | && XGetPixel (ximg, x, ym) == bg | |
675 | && XGetPixel (ximg, xp, y) == bg | |
676 | && XGetPixel (ximg, xp, yp) == bg | |
677 | && XGetPixel (ximg, xp, ym) == bg | |
678 | && XGetPixel (ximg, xm, y) == bg | |
679 | && XGetPixel (ximg, xm, yp) == bg | |
680 | && XGetPixel (ximg, xm, ym) == bg) | |
681 | XPutPixel (mask_img, x, y, 0); | |
682 | else | |
683 | XPutPixel (mask_img, x, y, 1); | |
684 | } | |
685 | } | |
686 | ||
687 | xassert (interrupt_input_blocked); | |
688 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); | |
689 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
690 | width, height); | |
691 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
692 | ||
693 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
694 | dpyinfo->bitmaps[id - 1].mask = mask; | |
695 | ||
696 | XDestroyImage (ximg); | |
697 | x_destroy_x_image (mask_img); | |
698 | ||
699 | return 0; | |
700 | } | |
701 | ||
702 | #endif /* HAVE_X_WINDOWS */ | |
703 | ||
704 | ||
705 | /*********************************************************************** | |
706 | Image types | |
707 | ***********************************************************************/ | |
708 | ||
709 | /* Value is the number of elements of vector VECTOR. */ | |
710 | ||
711 | #define DIM(VECTOR) (sizeof (VECTOR) / sizeof *(VECTOR)) | |
712 | ||
713 | /* List of supported image types. Use define_image_type to add new | |
714 | types. Use lookup_image_type to find a type for a given symbol. */ | |
715 | ||
716 | static struct image_type *image_types; | |
717 | ||
0855eb52 JB |
718 | /* A list of symbols, one for each supported image type. */ |
719 | ||
720 | Lisp_Object Vimage_types; | |
721 | ||
2a611c1a JB |
722 | /* An alist of image types and libraries that implement the type. */ |
723 | ||
724 | Lisp_Object Vimage_library_alist; | |
725 | ||
0855eb52 JB |
726 | /* Cache for delayed-loading image types. */ |
727 | ||
728 | static Lisp_Object Vimage_type_cache; | |
729 | ||
4ef0d4d0 KS |
730 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ |
731 | ||
732 | Lisp_Object Qxbm; | |
733 | ||
734 | /* Keywords. */ | |
735 | ||
736 | extern Lisp_Object QCwidth, QCheight, QCforeground, QCbackground, QCfile; | |
737 | extern Lisp_Object QCdata, QCtype; | |
e1dfec15 | 738 | extern Lisp_Object Qcenter; |
4ef0d4d0 KS |
739 | Lisp_Object QCascent, QCmargin, QCrelief; |
740 | Lisp_Object QCconversion, QCcolor_symbols, QCheuristic_mask; | |
741 | Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask; | |
742 | ||
743 | /* Other symbols. */ | |
744 | ||
745 | Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; | |
4ef0d4d0 KS |
746 | |
747 | /* Time in seconds after which images should be removed from the cache | |
748 | if not displayed. */ | |
749 | ||
750 | Lisp_Object Vimage_cache_eviction_delay; | |
751 | ||
752 | /* Function prototypes. */ | |
753 | ||
0855eb52 | 754 | static Lisp_Object define_image_type P_ ((struct image_type *type, int loaded)); |
4ef0d4d0 KS |
755 | static struct image_type *lookup_image_type P_ ((Lisp_Object symbol)); |
756 | static void image_error P_ ((char *format, Lisp_Object, Lisp_Object)); | |
757 | static void x_laplace P_ ((struct frame *, struct image *)); | |
758 | static void x_emboss P_ ((struct frame *, struct image *)); | |
759 | static int x_build_heuristic_mask P_ ((struct frame *, struct image *, | |
760 | Lisp_Object)); | |
761 | ||
0855eb52 JB |
762 | #define CACHE_IMAGE_TYPE(type, status) \ |
763 | do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0) | |
764 | ||
765 | #define ADD_IMAGE_TYPE(type) \ | |
766 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
767 | |
768 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 769 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 770 | |
0855eb52 JB |
771 | static Lisp_Object |
772 | define_image_type (type, loaded) | |
4ef0d4d0 | 773 | struct image_type *type; |
0855eb52 | 774 | int loaded; |
4ef0d4d0 | 775 | { |
0855eb52 JB |
776 | Lisp_Object success; |
777 | ||
778 | if (!loaded) | |
779 | success = Qnil; | |
780 | else | |
781 | { | |
782 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
783 | The initialized data segment is read-only. */ | |
784 | struct image_type *p = (struct image_type *) xmalloc (sizeof *p); | |
785 | bcopy (type, p, sizeof *p); | |
786 | p->next = image_types; | |
787 | image_types = p; | |
788 | success = Qt; | |
789 | } | |
790 | ||
adac86db | 791 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 792 | return success; |
4ef0d4d0 KS |
793 | } |
794 | ||
795 | ||
796 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
797 | structure. Value is null if SYMBOL is not a known image type. */ | |
798 | ||
799 | static INLINE struct image_type * | |
800 | lookup_image_type (symbol) | |
801 | Lisp_Object symbol; | |
802 | { | |
803 | struct image_type *type; | |
804 | ||
803aac3e | 805 | /* We must initialize the image-type if it hasn't been already. */ |
2a611c1a | 806 | if (NILP (Finit_image_library (symbol, Vimage_library_alist))) |
803aac3e MB |
807 | return 0; /* unimplemented */ |
808 | ||
4ef0d4d0 KS |
809 | for (type = image_types; type; type = type->next) |
810 | if (EQ (symbol, *type->type)) | |
811 | break; | |
812 | ||
813 | return type; | |
814 | } | |
815 | ||
816 | ||
817 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
818 | valid image specification is a list whose car is the symbol | |
819 | `image', and whose rest is a property list. The property list must | |
820 | contain a value for key `:type'. That value must be the name of a | |
821 | supported image type. The rest of the property list depends on the | |
822 | image type. */ | |
823 | ||
824 | int | |
825 | valid_image_p (object) | |
826 | Lisp_Object object; | |
827 | { | |
828 | int valid_p = 0; | |
829 | ||
830 | if (IMAGEP (object)) | |
831 | { | |
832 | Lisp_Object tem; | |
833 | ||
834 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
835 | if (EQ (XCAR (tem), QCtype)) | |
836 | { | |
837 | tem = XCDR (tem); | |
838 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
839 | { | |
840 | struct image_type *type; | |
841 | type = lookup_image_type (XCAR (tem)); | |
842 | if (type) | |
843 | valid_p = type->valid_p (object); | |
844 | } | |
845 | ||
846 | break; | |
847 | } | |
848 | } | |
849 | ||
850 | return valid_p; | |
851 | } | |
852 | ||
853 | ||
854 | /* Log error message with format string FORMAT and argument ARG. | |
855 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
856 | good idea because this would interrupt redisplay, and the error | |
857 | message display would lead to another redisplay. This function | |
858 | therefore simply displays a message. */ | |
859 | ||
860 | static void | |
861 | image_error (format, arg1, arg2) | |
862 | char *format; | |
863 | Lisp_Object arg1, arg2; | |
864 | { | |
865 | add_to_log (format, arg1, arg2); | |
866 | } | |
867 | ||
868 | ||
869 | \f | |
870 | /*********************************************************************** | |
871 | Image specifications | |
872 | ***********************************************************************/ | |
873 | ||
874 | enum image_value_type | |
875 | { | |
876 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
877 | IMAGE_STRING_VALUE, | |
878 | IMAGE_STRING_OR_NIL_VALUE, | |
879 | IMAGE_SYMBOL_VALUE, | |
880 | IMAGE_POSITIVE_INTEGER_VALUE, | |
881 | IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, | |
882 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, | |
883 | IMAGE_ASCENT_VALUE, | |
884 | IMAGE_INTEGER_VALUE, | |
885 | IMAGE_FUNCTION_VALUE, | |
886 | IMAGE_NUMBER_VALUE, | |
887 | IMAGE_BOOL_VALUE | |
888 | }; | |
889 | ||
890 | /* Structure used when parsing image specifications. */ | |
891 | ||
892 | struct image_keyword | |
893 | { | |
894 | /* Name of keyword. */ | |
895 | char *name; | |
896 | ||
897 | /* The type of value allowed. */ | |
898 | enum image_value_type type; | |
899 | ||
900 | /* Non-zero means key must be present. */ | |
901 | int mandatory_p; | |
902 | ||
903 | /* Used to recognize duplicate keywords in a property list. */ | |
904 | int count; | |
905 | ||
906 | /* The value that was found. */ | |
907 | Lisp_Object value; | |
908 | }; | |
909 | ||
910 | ||
911 | static int parse_image_spec P_ ((Lisp_Object, struct image_keyword *, | |
912 | int, Lisp_Object)); | |
913 | static Lisp_Object image_spec_value P_ ((Lisp_Object, Lisp_Object, int *)); | |
914 | ||
915 | ||
916 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
917 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
918 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
919 | image_keywords structures of size NKEYWORDS describing other | |
920 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
921 | ||
922 | static int | |
923 | parse_image_spec (spec, keywords, nkeywords, type) | |
924 | Lisp_Object spec; | |
925 | struct image_keyword *keywords; | |
926 | int nkeywords; | |
927 | Lisp_Object type; | |
928 | { | |
929 | int i; | |
930 | Lisp_Object plist; | |
931 | ||
932 | if (!IMAGEP (spec)) | |
933 | return 0; | |
934 | ||
935 | plist = XCDR (spec); | |
936 | while (CONSP (plist)) | |
937 | { | |
938 | Lisp_Object key, value; | |
939 | ||
940 | /* First element of a pair must be a symbol. */ | |
941 | key = XCAR (plist); | |
942 | plist = XCDR (plist); | |
943 | if (!SYMBOLP (key)) | |
944 | return 0; | |
945 | ||
946 | /* There must follow a value. */ | |
947 | if (!CONSP (plist)) | |
948 | return 0; | |
949 | value = XCAR (plist); | |
950 | plist = XCDR (plist); | |
951 | ||
952 | /* Find key in KEYWORDS. Error if not found. */ | |
953 | for (i = 0; i < nkeywords; ++i) | |
954 | if (strcmp (keywords[i].name, SDATA (SYMBOL_NAME (key))) == 0) | |
955 | break; | |
956 | ||
957 | if (i == nkeywords) | |
958 | continue; | |
959 | ||
960 | /* Record that we recognized the keyword. If a keywords | |
961 | was found more than once, it's an error. */ | |
962 | keywords[i].value = value; | |
963 | ++keywords[i].count; | |
964 | ||
965 | if (keywords[i].count > 1) | |
966 | return 0; | |
967 | ||
968 | /* Check type of value against allowed type. */ | |
969 | switch (keywords[i].type) | |
970 | { | |
971 | case IMAGE_STRING_VALUE: | |
972 | if (!STRINGP (value)) | |
973 | return 0; | |
974 | break; | |
975 | ||
976 | case IMAGE_STRING_OR_NIL_VALUE: | |
977 | if (!STRINGP (value) && !NILP (value)) | |
978 | return 0; | |
979 | break; | |
980 | ||
981 | case IMAGE_SYMBOL_VALUE: | |
982 | if (!SYMBOLP (value)) | |
983 | return 0; | |
984 | break; | |
985 | ||
986 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
987 | if (!INTEGERP (value) || XINT (value) <= 0) | |
988 | return 0; | |
989 | break; | |
990 | ||
991 | case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR: | |
992 | if (INTEGERP (value) && XINT (value) >= 0) | |
993 | break; | |
994 | if (CONSP (value) | |
995 | && INTEGERP (XCAR (value)) && INTEGERP (XCDR (value)) | |
996 | && XINT (XCAR (value)) >= 0 && XINT (XCDR (value)) >= 0) | |
997 | break; | |
998 | return 0; | |
999 | ||
1000 | case IMAGE_ASCENT_VALUE: | |
1001 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
1002 | break; | |
1003 | else if (INTEGERP (value) | |
1004 | && XINT (value) >= 0 | |
1005 | && XINT (value) <= 100) | |
1006 | break; | |
1007 | return 0; | |
1008 | ||
1009 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
1010 | if (!INTEGERP (value) || XINT (value) < 0) | |
1011 | return 0; | |
1012 | break; | |
1013 | ||
1014 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
1015 | break; | |
1016 | ||
1017 | case IMAGE_FUNCTION_VALUE: | |
1018 | value = indirect_function (value); | |
1019 | if (SUBRP (value) | |
1020 | || COMPILEDP (value) | |
1021 | || (CONSP (value) && EQ (XCAR (value), Qlambda))) | |
1022 | break; | |
1023 | return 0; | |
1024 | ||
1025 | case IMAGE_NUMBER_VALUE: | |
1026 | if (!INTEGERP (value) && !FLOATP (value)) | |
1027 | return 0; | |
1028 | break; | |
1029 | ||
1030 | case IMAGE_INTEGER_VALUE: | |
1031 | if (!INTEGERP (value)) | |
1032 | return 0; | |
1033 | break; | |
1034 | ||
1035 | case IMAGE_BOOL_VALUE: | |
1036 | if (!NILP (value) && !EQ (value, Qt)) | |
1037 | return 0; | |
1038 | break; | |
1039 | ||
1040 | default: | |
1041 | abort (); | |
1042 | break; | |
1043 | } | |
1044 | ||
1045 | if (EQ (key, QCtype) && !EQ (type, value)) | |
1046 | return 0; | |
1047 | } | |
1048 | ||
1049 | /* Check that all mandatory fields are present. */ | |
1050 | for (i = 0; i < nkeywords; ++i) | |
1051 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
1052 | return 0; | |
1053 | ||
1054 | return NILP (plist); | |
1055 | } | |
1056 | ||
1057 | ||
1058 | /* Return the value of KEY in image specification SPEC. Value is nil | |
1059 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
1060 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
1061 | ||
1062 | static Lisp_Object | |
1063 | image_spec_value (spec, key, found) | |
1064 | Lisp_Object spec, key; | |
1065 | int *found; | |
1066 | { | |
1067 | Lisp_Object tail; | |
1068 | ||
1069 | xassert (valid_image_p (spec)); | |
1070 | ||
1071 | for (tail = XCDR (spec); | |
1072 | CONSP (tail) && CONSP (XCDR (tail)); | |
1073 | tail = XCDR (XCDR (tail))) | |
1074 | { | |
1075 | if (EQ (XCAR (tail), key)) | |
1076 | { | |
1077 | if (found) | |
1078 | *found = 1; | |
1079 | return XCAR (XCDR (tail)); | |
1080 | } | |
1081 | } | |
1082 | ||
1083 | if (found) | |
1084 | *found = 0; | |
1085 | return Qnil; | |
1086 | } | |
1087 | ||
1088 | ||
1089 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
1090 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
1091 | PIXELS non-nil means return the size in pixels, otherwise return the | |
1092 | size in canonical character units. | |
1093 | FRAME is the frame on which the image will be displayed. FRAME nil | |
1094 | or omitted means use the selected frame. */) | |
1095 | (spec, pixels, frame) | |
1096 | Lisp_Object spec, pixels, frame; | |
1097 | { | |
1098 | Lisp_Object size; | |
1099 | ||
1100 | size = Qnil; | |
1101 | if (valid_image_p (spec)) | |
1102 | { | |
1103 | struct frame *f = check_x_frame (frame); | |
1104 | int id = lookup_image (f, spec); | |
1105 | struct image *img = IMAGE_FROM_ID (f, id); | |
1106 | int width = img->width + 2 * img->hmargin; | |
1107 | int height = img->height + 2 * img->vmargin; | |
1108 | ||
1109 | if (NILP (pixels)) | |
1110 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
1111 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
1112 | else | |
1113 | size = Fcons (make_number (width), make_number (height)); | |
1114 | } | |
1115 | else | |
1116 | error ("Invalid image specification"); | |
1117 | ||
1118 | return size; | |
1119 | } | |
1120 | ||
1121 | ||
1122 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
1123 | doc: /* Return t if image SPEC has a mask bitmap. | |
1124 | FRAME is the frame on which the image will be displayed. FRAME nil | |
1125 | or omitted means use the selected frame. */) | |
1126 | (spec, frame) | |
1127 | Lisp_Object spec, frame; | |
1128 | { | |
1129 | Lisp_Object mask; | |
1130 | ||
1131 | mask = Qnil; | |
1132 | if (valid_image_p (spec)) | |
1133 | { | |
1134 | struct frame *f = check_x_frame (frame); | |
1135 | int id = lookup_image (f, spec); | |
1136 | struct image *img = IMAGE_FROM_ID (f, id); | |
1137 | if (img->mask) | |
1138 | mask = Qt; | |
1139 | } | |
1140 | else | |
1141 | error ("Invalid image specification"); | |
1142 | ||
1143 | return mask; | |
1144 | } | |
1145 | ||
1146 | \f | |
1147 | /*********************************************************************** | |
1148 | Image type independent image structures | |
1149 | ***********************************************************************/ | |
1150 | ||
1151 | static struct image *make_image P_ ((Lisp_Object spec, unsigned hash)); | |
1152 | static void free_image P_ ((struct frame *f, struct image *img)); | |
f1f25b99 | 1153 | static int check_image_size P_ ((struct frame *f, int width, int height)); |
4ef0d4d0 | 1154 | |
f1f25b99 CY |
1155 | #define MAX_IMAGE_SIZE 6.0 |
1156 | Lisp_Object Vmax_image_size; | |
4ef0d4d0 KS |
1157 | |
1158 | /* Allocate and return a new image structure for image specification | |
1159 | SPEC. SPEC has a hash value of HASH. */ | |
1160 | ||
1161 | static struct image * | |
1162 | make_image (spec, hash) | |
1163 | Lisp_Object spec; | |
1164 | unsigned hash; | |
1165 | { | |
1166 | struct image *img = (struct image *) xmalloc (sizeof *img); | |
1167 | ||
1168 | xassert (valid_image_p (spec)); | |
1169 | bzero (img, sizeof *img); | |
1170 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); | |
1171 | xassert (img->type != NULL); | |
1172 | img->spec = spec; | |
1173 | img->data.lisp_val = Qnil; | |
1174 | img->ascent = DEFAULT_IMAGE_ASCENT; | |
1175 | img->hash = hash; | |
1176 | return img; | |
1177 | } | |
1178 | ||
1179 | ||
1180 | /* Free image IMG which was used on frame F, including its resources. */ | |
1181 | ||
1182 | static void | |
1183 | free_image (f, img) | |
1184 | struct frame *f; | |
1185 | struct image *img; | |
1186 | { | |
1187 | if (img) | |
1188 | { | |
1189 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1190 | ||
1191 | /* Remove IMG from the hash table of its cache. */ | |
1192 | if (img->prev) | |
1193 | img->prev->next = img->next; | |
1194 | else | |
1195 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1196 | ||
1197 | if (img->next) | |
1198 | img->next->prev = img->prev; | |
1199 | ||
1200 | c->images[img->id] = NULL; | |
1201 | ||
1202 | /* Free resources, then free IMG. */ | |
1203 | img->type->free (f, img); | |
1204 | xfree (img); | |
1205 | } | |
1206 | } | |
1207 | ||
f1f25b99 CY |
1208 | /* Return 1 if the given widths and heights are valid for display; |
1209 | otherwise, return 0. */ | |
1210 | ||
1211 | int | |
1212 | check_image_size (f, width, height) | |
1213 | struct frame *f; | |
1214 | int width; | |
1215 | int height; | |
1216 | { | |
7df4765a | 1217 | int w, h; |
f1f25b99 | 1218 | |
7df4765a | 1219 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1220 | return 0; |
1221 | ||
7df4765a KS |
1222 | if (INTEGERP (Vmax_image_size)) |
1223 | w = h = XINT (Vmax_image_size); | |
1224 | else if (FLOATP (Vmax_image_size)) | |
1225 | { | |
1226 | if (f != NULL) | |
1227 | { | |
1228 | w = FRAME_PIXEL_WIDTH (f); | |
1229 | h = FRAME_PIXEL_HEIGHT (f); | |
1230 | } | |
1231 | else | |
1232 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
1233 | w = (int) (XFLOAT_DATA (Vmax_image_size) * w); | |
1234 | h = (int) (XFLOAT_DATA (Vmax_image_size) * h); | |
1235 | } | |
1236 | else | |
1237 | return 1; | |
1238 | ||
1239 | return (width <= w && height <= h); | |
f1f25b99 | 1240 | } |
4ef0d4d0 KS |
1241 | |
1242 | /* Prepare image IMG for display on frame F. Must be called before | |
1243 | drawing an image. */ | |
1244 | ||
1245 | void | |
1246 | prepare_image_for_display (f, img) | |
1247 | struct frame *f; | |
1248 | struct image *img; | |
1249 | { | |
1250 | EMACS_TIME t; | |
1251 | ||
1252 | /* We're about to display IMG, so set its timestamp to `now'. */ | |
1253 | EMACS_GET_TIME (t); | |
1254 | img->timestamp = EMACS_SECS (t); | |
1255 | ||
1256 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1257 | type dependent loader function. */ | |
1258 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1259 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 YM |
1260 | |
1261 | #if defined (MAC_OS) && USE_CG_DRAWING | |
1262 | if (!img->load_failed_p && img->data.ptr_val == NULL) | |
1263 | { | |
1264 | img->data.ptr_val = mac_create_cg_image_from_image (f, img); | |
1265 | if (img->data.ptr_val == NULL) | |
1266 | { | |
1267 | img->load_failed_p = 1; | |
1268 | img->type->free (f, img); | |
1269 | } | |
1270 | } | |
1271 | #endif | |
4ef0d4d0 KS |
1272 | } |
1273 | ||
1274 | ||
1275 | /* Value is the number of pixels for the ascent of image IMG when | |
1276 | drawn in face FACE. */ | |
1277 | ||
1278 | int | |
1938bc36 | 1279 | image_ascent (img, face, slice) |
4ef0d4d0 KS |
1280 | struct image *img; |
1281 | struct face *face; | |
1938bc36 | 1282 | struct glyph_slice *slice; |
4ef0d4d0 | 1283 | { |
1938bc36 | 1284 | int height; |
4ef0d4d0 KS |
1285 | int ascent; |
1286 | ||
1938bc36 KS |
1287 | if (slice->height == img->height) |
1288 | height = img->height + img->vmargin; | |
1289 | else if (slice->y == 0) | |
1290 | height = slice->height + img->vmargin; | |
1291 | else | |
1292 | height = slice->height; | |
1293 | ||
4ef0d4d0 KS |
1294 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1295 | { | |
1296 | if (face->font) | |
1297 | { | |
1298 | #ifdef HAVE_NTGUI | |
1299 | /* W32 specific version. Why?. ++kfs */ | |
1300 | ascent = height / 2 - (FONT_DESCENT(face->font) | |
1301 | - FONT_BASE(face->font)) / 2; | |
1302 | #else | |
1303 | /* This expression is arranged so that if the image can't be | |
1304 | exactly centered, it will be moved slightly up. This is | |
1305 | because a typical font is `top-heavy' (due to the presence | |
1306 | uppercase letters), so the image placement should err towards | |
1307 | being top-heavy too. It also just generally looks better. */ | |
1308 | ascent = (height + face->font->ascent - face->font->descent + 1) / 2; | |
1309 | #endif /* HAVE_NTGUI */ | |
1310 | } | |
1311 | else | |
1312 | ascent = height / 2; | |
1313 | } | |
1314 | else | |
1315 | ascent = (int) (height * img->ascent / 100.0); | |
1316 | ||
1317 | return ascent; | |
1318 | } | |
1319 | ||
1320 | \f | |
1321 | /* Image background colors. */ | |
1322 | ||
1323 | /* Find the "best" corner color of a bitmap. | |
1324 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1325 | ||
1326 | static RGB_PIXEL_COLOR | |
1327 | four_corners_best (ximg, width, height) | |
1328 | XImagePtr_or_DC ximg; | |
1329 | unsigned long width, height; | |
1330 | { | |
1331 | RGB_PIXEL_COLOR corners[4], best; | |
1332 | int i, best_count; | |
1333 | ||
1334 | /* Get the colors at the corners of ximg. */ | |
1335 | corners[0] = GET_PIXEL (ximg, 0, 0); | |
1336 | corners[1] = GET_PIXEL (ximg, width - 1, 0); | |
1337 | corners[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1338 | corners[3] = GET_PIXEL (ximg, 0, height - 1); | |
1339 | ||
1340 | /* Choose the most frequently found color as background. */ | |
1341 | for (i = best_count = 0; i < 4; ++i) | |
1342 | { | |
1343 | int j, n; | |
1344 | ||
1345 | for (j = n = 0; j < 4; ++j) | |
1346 | if (corners[i] == corners[j]) | |
1347 | ++n; | |
1348 | ||
1349 | if (n > best_count) | |
1350 | best = corners[i], best_count = n; | |
1351 | } | |
1352 | ||
1353 | return best; | |
1354 | } | |
1355 | ||
1356 | /* Portability macros */ | |
1357 | ||
1358 | #ifdef HAVE_NTGUI | |
1359 | ||
1360 | #define Destroy_Image(img_dc, prev) \ | |
1361 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1362 | ||
1363 | #define Free_Pixmap(display, pixmap) \ | |
1364 | DeleteObject (pixmap) | |
1365 | ||
1366 | #else | |
1367 | ||
1368 | #define Destroy_Image(ximg, dummy) \ | |
1369 | XDestroyImage (ximg) | |
1370 | ||
1371 | #define Free_Pixmap(display, pixmap) \ | |
1372 | XFreePixmap (display, pixmap) | |
1373 | ||
1374 | #endif /* HAVE_NTGUI */ | |
1375 | ||
1376 | ||
1377 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1378 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1379 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1380 | use for the heuristic. */ |
4ef0d4d0 KS |
1381 | |
1382 | RGB_PIXEL_COLOR | |
1383 | image_background (img, f, ximg) | |
1384 | struct image *img; | |
1385 | struct frame *f; | |
1386 | XImagePtr_or_DC ximg; | |
1387 | { | |
1388 | if (! img->background_valid) | |
1389 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1390 | { | |
1391 | int free_ximg = !ximg; | |
1392 | #ifdef HAVE_NTGUI | |
1393 | HGDIOBJ prev; | |
1394 | #endif /* HAVE_NTGUI */ | |
1395 | ||
1396 | if (free_ximg) | |
1397 | { | |
1398 | #ifndef HAVE_NTGUI | |
1399 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1400 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1401 | #else | |
1402 | HDC frame_dc = get_frame_dc (f); | |
1403 | ximg = CreateCompatibleDC (frame_dc); | |
1404 | release_frame_dc (f, frame_dc); | |
1405 | prev = SelectObject (ximg, img->pixmap); | |
1406 | #endif /* !HAVE_NTGUI */ | |
1407 | } | |
1408 | ||
1409 | img->background = four_corners_best (ximg, img->width, img->height); | |
1410 | ||
1411 | if (free_ximg) | |
1412 | Destroy_Image (ximg, prev); | |
1f026899 | 1413 | |
4ef0d4d0 KS |
1414 | img->background_valid = 1; |
1415 | } | |
1416 | ||
1417 | return img->background; | |
1418 | } | |
1419 | ||
1420 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1421 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1422 | existing XImage object to use for the heuristic. */ | |
1423 | ||
1424 | int | |
1425 | image_background_transparent (img, f, mask) | |
1426 | struct image *img; | |
1427 | struct frame *f; | |
1428 | XImagePtr_or_DC mask; | |
1429 | { | |
1430 | if (! img->background_transparent_valid) | |
1431 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1432 | { | |
1433 | if (img->mask) | |
1434 | { | |
1435 | int free_mask = !mask; | |
1436 | #ifdef HAVE_NTGUI | |
1437 | HGDIOBJ prev; | |
1438 | #endif /* HAVE_NTGUI */ | |
1439 | ||
1440 | if (free_mask) | |
1441 | { | |
1442 | #ifndef HAVE_NTGUI | |
1443 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1444 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1445 | #else | |
1446 | HDC frame_dc = get_frame_dc (f); | |
1447 | mask = CreateCompatibleDC (frame_dc); | |
1448 | release_frame_dc (f, frame_dc); | |
1449 | prev = SelectObject (mask, img->mask); | |
1450 | #endif /* HAVE_NTGUI */ | |
1451 | } | |
1452 | ||
1453 | img->background_transparent | |
9ecf6403 | 1454 | = (four_corners_best (mask, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1455 | |
1456 | if (free_mask) | |
1457 | Destroy_Image (mask, prev); | |
1458 | } | |
1459 | else | |
1460 | img->background_transparent = 0; | |
1461 | ||
1462 | img->background_transparent_valid = 1; | |
1463 | } | |
1464 | ||
1465 | return img->background_transparent; | |
1466 | } | |
1467 | ||
1468 | \f | |
1469 | /*********************************************************************** | |
1470 | Helper functions for X image types | |
1471 | ***********************************************************************/ | |
1472 | ||
1473 | static void x_clear_image_1 P_ ((struct frame *, struct image *, int, | |
1474 | int, int)); | |
1475 | static void x_clear_image P_ ((struct frame *f, struct image *img)); | |
1476 | static unsigned long x_alloc_image_color P_ ((struct frame *f, | |
1477 | struct image *img, | |
1478 | Lisp_Object color_name, | |
1479 | unsigned long dflt)); | |
1480 | ||
1481 | ||
1482 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1483 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1484 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1485 | the image, if any. */ | |
1486 | ||
1487 | static void | |
1488 | x_clear_image_1 (f, img, pixmap_p, mask_p, colors_p) | |
1489 | struct frame *f; | |
1490 | struct image *img; | |
1491 | int pixmap_p, mask_p, colors_p; | |
1492 | { | |
1493 | if (pixmap_p && img->pixmap) | |
1494 | { | |
1495 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1496 | img->pixmap = NO_PIXMAP; | |
1497 | img->background_valid = 0; | |
1498 | } | |
1499 | ||
1500 | if (mask_p && img->mask) | |
1501 | { | |
1502 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1503 | img->mask = NO_PIXMAP; | |
1504 | img->background_transparent_valid = 0; | |
1505 | } | |
1506 | ||
1507 | if (colors_p && img->ncolors) | |
1508 | { | |
1509 | /* MAC_TODO: color table support. */ | |
1510 | /* W32_TODO: color table support. */ | |
1511 | #ifdef HAVE_X_WINDOWS | |
1512 | x_free_colors (f, img->colors, img->ncolors); | |
1513 | #endif /* HAVE_X_WINDOWS */ | |
1514 | xfree (img->colors); | |
1515 | img->colors = NULL; | |
1516 | img->ncolors = 0; | |
1517 | } | |
c7fea325 YM |
1518 | |
1519 | #if defined (MAC_OS) && USE_CG_DRAWING | |
1520 | if (img->data.ptr_val) | |
1521 | { | |
1522 | CGImageRelease (img->data.ptr_val); | |
1523 | img->data.ptr_val = NULL; | |
1524 | } | |
1525 | #endif | |
4ef0d4d0 KS |
1526 | } |
1527 | ||
1528 | /* Free X resources of image IMG which is used on frame F. */ | |
1529 | ||
1530 | static void | |
1531 | x_clear_image (f, img) | |
1532 | struct frame *f; | |
1533 | struct image *img; | |
1534 | { | |
1535 | BLOCK_INPUT; | |
1536 | x_clear_image_1 (f, img, 1, 1, 1); | |
1537 | UNBLOCK_INPUT; | |
1538 | } | |
1539 | ||
1540 | ||
1541 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1542 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1543 | IMG->colors, so that it can be freed again. Value is the pixel | |
1544 | color. */ | |
1545 | ||
1546 | static unsigned long | |
1547 | x_alloc_image_color (f, img, color_name, dflt) | |
1548 | struct frame *f; | |
1549 | struct image *img; | |
1550 | Lisp_Object color_name; | |
1551 | unsigned long dflt; | |
1552 | { | |
1553 | XColor color; | |
1554 | unsigned long result; | |
1555 | ||
1556 | xassert (STRINGP (color_name)); | |
1557 | ||
1558 | if (x_defined_color (f, SDATA (color_name), &color, 1)) | |
1559 | { | |
1560 | /* This isn't called frequently so we get away with simply | |
1561 | reallocating the color vector to the needed size, here. */ | |
1562 | ++img->ncolors; | |
1563 | img->colors = | |
1564 | (unsigned long *) xrealloc (img->colors, | |
1565 | img->ncolors * sizeof *img->colors); | |
1566 | img->colors[img->ncolors - 1] = color.pixel; | |
1567 | result = color.pixel; | |
1568 | } | |
1569 | else | |
1570 | result = dflt; | |
1571 | ||
1572 | return result; | |
1573 | } | |
1574 | ||
1575 | ||
1576 | \f | |
1577 | /*********************************************************************** | |
1578 | Image Cache | |
1579 | ***********************************************************************/ | |
1580 | ||
1581 | static void cache_image P_ ((struct frame *f, struct image *img)); | |
1582 | static void postprocess_image P_ ((struct frame *, struct image *)); | |
1583 | ||
1584 | /* Return a new, initialized image cache that is allocated from the | |
1585 | heap. Call free_image_cache to free an image cache. */ | |
1586 | ||
1587 | struct image_cache * | |
1588 | make_image_cache () | |
1589 | { | |
1590 | struct image_cache *c = (struct image_cache *) xmalloc (sizeof *c); | |
1591 | int size; | |
1592 | ||
1593 | bzero (c, sizeof *c); | |
1594 | c->size = 50; | |
1595 | c->images = (struct image **) xmalloc (c->size * sizeof *c->images); | |
1596 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
1597 | c->buckets = (struct image **) xmalloc (size); | |
1598 | bzero (c->buckets, size); | |
1599 | return c; | |
1600 | } | |
1601 | ||
1602 | ||
1603 | /* Free image cache of frame F. Be aware that X frames share images | |
1604 | caches. */ | |
1605 | ||
1606 | void | |
1607 | free_image_cache (f) | |
1608 | struct frame *f; | |
1609 | { | |
1610 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1611 | if (c) | |
1612 | { | |
1613 | int i; | |
1614 | ||
1615 | /* Cache should not be referenced by any frame when freed. */ | |
1616 | xassert (c->refcount == 0); | |
1617 | ||
1618 | for (i = 0; i < c->used; ++i) | |
1619 | free_image (f, c->images[i]); | |
1620 | xfree (c->images); | |
1621 | xfree (c->buckets); | |
1622 | xfree (c); | |
1623 | FRAME_X_IMAGE_CACHE (f) = NULL; | |
1624 | } | |
1625 | } | |
1626 | ||
1627 | ||
1628 | /* Clear image cache of frame F. FORCE_P non-zero means free all | |
1629 | images. FORCE_P zero means clear only images that haven't been | |
1630 | displayed for some time. Should be called from time to time to | |
1631 | reduce the number of loaded images. If image-eviction-seconds is | |
1632 | non-nil, this frees images in the cache which weren't displayed for | |
1633 | at least that many seconds. */ | |
1634 | ||
1635 | void | |
1636 | clear_image_cache (f, force_p) | |
1637 | struct frame *f; | |
1638 | int force_p; | |
1639 | { | |
1640 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1641 | ||
1642 | if (c && INTEGERP (Vimage_cache_eviction_delay)) | |
1643 | { | |
1644 | EMACS_TIME t; | |
1645 | unsigned long old; | |
1646 | int i, nfreed; | |
1647 | ||
1648 | EMACS_GET_TIME (t); | |
1649 | old = EMACS_SECS (t) - XFASTINT (Vimage_cache_eviction_delay); | |
1650 | ||
1651 | /* Block input so that we won't be interrupted by a SIGIO | |
1652 | while being in an inconsistent state. */ | |
1653 | BLOCK_INPUT; | |
1654 | ||
1655 | for (i = nfreed = 0; i < c->used; ++i) | |
1656 | { | |
1657 | struct image *img = c->images[i]; | |
1658 | if (img != NULL | |
1659 | && (force_p || img->timestamp < old)) | |
1660 | { | |
1661 | free_image (f, img); | |
1662 | ++nfreed; | |
1663 | } | |
1664 | } | |
1665 | ||
1666 | /* We may be clearing the image cache because, for example, | |
1667 | Emacs was iconified for a longer period of time. In that | |
1668 | case, current matrices may still contain references to | |
1669 | images freed above. So, clear these matrices. */ | |
1670 | if (nfreed) | |
1671 | { | |
1672 | Lisp_Object tail, frame; | |
1673 | ||
1674 | FOR_EACH_FRAME (tail, frame) | |
1675 | { | |
1676 | struct frame *f = XFRAME (frame); | |
1677 | if (FRAME_WINDOW_P (f) | |
1678 | && FRAME_X_IMAGE_CACHE (f) == c) | |
1679 | clear_current_matrices (f); | |
1680 | } | |
1681 | ||
1682 | ++windows_or_buffers_changed; | |
1683 | } | |
1684 | ||
1685 | UNBLOCK_INPUT; | |
1686 | } | |
1687 | } | |
1688 | ||
1689 | ||
1690 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1691 | 0, 1, 0, | |
1692 | doc: /* Clear the image cache of FRAME. | |
1693 | FRAME nil or omitted means use the selected frame. | |
1694 | FRAME t means clear the image caches of all frames. */) | |
1695 | (frame) | |
1696 | Lisp_Object frame; | |
1697 | { | |
1698 | if (EQ (frame, Qt)) | |
1699 | { | |
1700 | Lisp_Object tail; | |
1701 | ||
1702 | FOR_EACH_FRAME (tail, frame) | |
1703 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
1704 | clear_image_cache (XFRAME (frame), 1); | |
1705 | } | |
1706 | else | |
1707 | clear_image_cache (check_x_frame (frame), 1); | |
1708 | ||
1709 | return Qnil; | |
1710 | } | |
1711 | ||
1712 | ||
1713 | /* Compute masks and transform image IMG on frame F, as specified | |
1714 | by the image's specification, */ | |
1715 | ||
1716 | static void | |
1717 | postprocess_image (f, img) | |
1718 | struct frame *f; | |
1719 | struct image *img; | |
1720 | { | |
1721 | /* Manipulation of the image's mask. */ | |
1722 | if (img->pixmap) | |
1723 | { | |
1724 | Lisp_Object conversion, spec; | |
1725 | Lisp_Object mask; | |
1726 | ||
1727 | spec = img->spec; | |
1728 | ||
1729 | /* `:heuristic-mask t' | |
1730 | `:mask heuristic' | |
1731 | means build a mask heuristically. | |
1732 | `:heuristic-mask (R G B)' | |
1733 | `:mask (heuristic (R G B))' | |
1734 | means build a mask from color (R G B) in the | |
1735 | image. | |
1736 | `:mask nil' | |
1737 | means remove a mask, if any. */ | |
1738 | ||
1739 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1740 | if (!NILP (mask)) | |
1741 | x_build_heuristic_mask (f, img, mask); | |
1742 | else | |
1743 | { | |
1744 | int found_p; | |
1745 | ||
1746 | mask = image_spec_value (spec, QCmask, &found_p); | |
1747 | ||
1748 | if (EQ (mask, Qheuristic)) | |
1749 | x_build_heuristic_mask (f, img, Qt); | |
1750 | else if (CONSP (mask) | |
1751 | && EQ (XCAR (mask), Qheuristic)) | |
1752 | { | |
1753 | if (CONSP (XCDR (mask))) | |
1754 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1755 | else | |
1756 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1757 | } | |
1758 | else if (NILP (mask) && found_p && img->mask) | |
1759 | { | |
1760 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1761 | img->mask = NO_PIXMAP; | |
1762 | } | |
1763 | } | |
1764 | ||
1765 | ||
1766 | /* Should we apply an image transformation algorithm? */ | |
1767 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1768 | if (EQ (conversion, Qdisabled)) | |
1769 | x_disable_image (f, img); | |
1770 | else if (EQ (conversion, Qlaplace)) | |
1771 | x_laplace (f, img); | |
1772 | else if (EQ (conversion, Qemboss)) | |
1773 | x_emboss (f, img); | |
1774 | else if (CONSP (conversion) | |
1775 | && EQ (XCAR (conversion), Qedge_detection)) | |
1776 | { | |
1777 | Lisp_Object tem; | |
1778 | tem = XCDR (conversion); | |
1779 | if (CONSP (tem)) | |
1780 | x_edge_detection (f, img, | |
1781 | Fplist_get (tem, QCmatrix), | |
1782 | Fplist_get (tem, QCcolor_adjustment)); | |
1783 | } | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | ||
1788 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1789 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1790 | ||
1791 | int | |
1792 | lookup_image (f, spec) | |
1793 | struct frame *f; | |
1794 | Lisp_Object spec; | |
1795 | { | |
1796 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1797 | struct image *img; | |
1798 | int i; | |
1799 | unsigned hash; | |
1800 | struct gcpro gcpro1; | |
1801 | EMACS_TIME now; | |
1802 | ||
1803 | /* F must be a window-system frame, and SPEC must be a valid image | |
1804 | specification. */ | |
1805 | xassert (FRAME_WINDOW_P (f)); | |
1806 | xassert (valid_image_p (spec)); | |
1807 | ||
1808 | GCPRO1 (spec); | |
1809 | ||
1810 | /* Look up SPEC in the hash table of the image cache. */ | |
1811 | hash = sxhash (spec, 0); | |
1812 | i = hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1813 | ||
1814 | for (img = c->buckets[i]; img; img = img->next) | |
1815 | if (img->hash == hash && !NILP (Fequal (img->spec, spec))) | |
1816 | break; | |
1817 | ||
f1f25b99 CY |
1818 | if (img && img->load_failed_p) |
1819 | { | |
1820 | free_image (f, img); | |
1821 | img = NULL; | |
1822 | } | |
1823 | ||
4ef0d4d0 KS |
1824 | /* If not found, create a new image and cache it. */ |
1825 | if (img == NULL) | |
1826 | { | |
1827 | extern Lisp_Object Qpostscript; | |
1828 | ||
1829 | BLOCK_INPUT; | |
1830 | img = make_image (spec, hash); | |
1831 | cache_image (f, img); | |
1832 | img->load_failed_p = img->type->load (f, img) == 0; | |
1833 | ||
1834 | /* If we can't load the image, and we don't have a width and | |
1835 | height, use some arbitrary width and height so that we can | |
1836 | draw a rectangle for it. */ | |
1837 | if (img->load_failed_p) | |
1838 | { | |
1839 | Lisp_Object value; | |
1840 | ||
1841 | value = image_spec_value (spec, QCwidth, NULL); | |
1842 | img->width = (INTEGERP (value) | |
1843 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1844 | value = image_spec_value (spec, QCheight, NULL); | |
1845 | img->height = (INTEGERP (value) | |
1846 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1847 | } | |
1848 | else | |
1849 | { | |
1850 | /* Handle image type independent image attributes | |
1851 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1852 | `:background COLOR'. */ | |
1853 | Lisp_Object ascent, margin, relief, bg; | |
1854 | ||
1855 | ascent = image_spec_value (spec, QCascent, NULL); | |
1856 | if (INTEGERP (ascent)) | |
1857 | img->ascent = XFASTINT (ascent); | |
1858 | else if (EQ (ascent, Qcenter)) | |
1859 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1860 | ||
1861 | margin = image_spec_value (spec, QCmargin, NULL); | |
1862 | if (INTEGERP (margin) && XINT (margin) >= 0) | |
1863 | img->vmargin = img->hmargin = XFASTINT (margin); | |
1864 | else if (CONSP (margin) && INTEGERP (XCAR (margin)) | |
1865 | && INTEGERP (XCDR (margin))) | |
1866 | { | |
1867 | if (XINT (XCAR (margin)) > 0) | |
1868 | img->hmargin = XFASTINT (XCAR (margin)); | |
1869 | if (XINT (XCDR (margin)) > 0) | |
1870 | img->vmargin = XFASTINT (XCDR (margin)); | |
1871 | } | |
1872 | ||
1873 | relief = image_spec_value (spec, QCrelief, NULL); | |
1874 | if (INTEGERP (relief)) | |
1875 | { | |
1876 | img->relief = XINT (relief); | |
1877 | img->hmargin += abs (img->relief); | |
1878 | img->vmargin += abs (img->relief); | |
1879 | } | |
1880 | ||
1881 | if (! img->background_valid) | |
1882 | { | |
1883 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1884 | if (!NILP (bg)) | |
1885 | { | |
1886 | img->background | |
1887 | = x_alloc_image_color (f, img, bg, | |
1888 | FRAME_BACKGROUND_PIXEL (f)); | |
1889 | img->background_valid = 1; | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | /* Do image transformations and compute masks, unless we | |
1894 | don't have the image yet. */ | |
1895 | if (!EQ (*img->type->type, Qpostscript)) | |
1896 | postprocess_image (f, img); | |
1897 | } | |
1898 | ||
1899 | UNBLOCK_INPUT; | |
1900 | } | |
1901 | ||
1902 | /* We're using IMG, so set its timestamp to `now'. */ | |
1903 | EMACS_GET_TIME (now); | |
1904 | img->timestamp = EMACS_SECS (now); | |
1905 | ||
1906 | UNGCPRO; | |
1907 | ||
1908 | /* Value is the image id. */ | |
1909 | return img->id; | |
1910 | } | |
1911 | ||
1912 | ||
1913 | /* Cache image IMG in the image cache of frame F. */ | |
1914 | ||
1915 | static void | |
1916 | cache_image (f, img) | |
1917 | struct frame *f; | |
1918 | struct image *img; | |
1919 | { | |
1920 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1921 | int i; | |
1922 | ||
1923 | /* Find a free slot in c->images. */ | |
1924 | for (i = 0; i < c->used; ++i) | |
1925 | if (c->images[i] == NULL) | |
1926 | break; | |
1927 | ||
1928 | /* If no free slot found, maybe enlarge c->images. */ | |
1929 | if (i == c->used && c->used == c->size) | |
1930 | { | |
1931 | c->size *= 2; | |
1932 | c->images = (struct image **) xrealloc (c->images, | |
1933 | c->size * sizeof *c->images); | |
1934 | } | |
1935 | ||
1936 | /* Add IMG to c->images, and assign IMG an id. */ | |
1937 | c->images[i] = img; | |
1938 | img->id = i; | |
1939 | if (i == c->used) | |
1940 | ++c->used; | |
1941 | ||
1942 | /* Add IMG to the cache's hash table. */ | |
1943 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1944 | img->next = c->buckets[i]; | |
1945 | if (img->next) | |
1946 | img->next->prev = img; | |
1947 | img->prev = NULL; | |
1948 | c->buckets[i] = img; | |
1949 | } | |
1950 | ||
1951 | ||
1952 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1953 | Lisp Objects in the image cache. */ | |
1954 | ||
1955 | void | |
1956 | forall_images_in_image_cache (f, fn) | |
1957 | struct frame *f; | |
1958 | void (*fn) P_ ((struct image *img)); | |
1959 | { | |
1960 | if (FRAME_LIVE_P (f) && FRAME_WINDOW_P (f)) | |
1961 | { | |
1962 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
1963 | if (c) | |
1964 | { | |
1965 | int i; | |
1966 | for (i = 0; i < c->used; ++i) | |
1967 | if (c->images[i]) | |
1968 | fn (c->images[i]); | |
1969 | } | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | ||
1974 | \f | |
1975 | /*********************************************************************** | |
1976 | X / MAC / W32 support code | |
1977 | ***********************************************************************/ | |
1978 | ||
1979 | #ifdef HAVE_NTGUI | |
1980 | ||
1981 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
09e8eb5b | 1982 | #define DEF_IMGLIB_FN(func) int (FAR CDECL *fn_##func)() |
4ef0d4d0 KS |
1983 | |
1984 | /* Macro for loading those image functions from the library. */ | |
1985 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1986 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1987 | if (!fn_##func) return 0; \ | |
1988 | } | |
1989 | ||
0855eb52 JB |
1990 | /* Load a DLL implementing an image type. |
1991 | The `image-library-alist' variable associates a symbol, | |
1992 | identifying an image type, to a list of possible filenames. | |
1993 | The function returns NULL if no library could be loaded for | |
1994 | the given image type, or if the library was previously loaded; | |
1995 | else the handle of the DLL. */ | |
1996 | static HMODULE | |
1997 | w32_delayed_load (Lisp_Object libraries, Lisp_Object type) | |
1998 | { | |
1999 | HMODULE library = NULL; | |
2000 | ||
2001 | if (CONSP (libraries) && NILP (Fassq (type, Vimage_type_cache))) | |
2002 | { | |
2003 | Lisp_Object dlls = Fassq (type, libraries); | |
2004 | ||
2005 | if (CONSP (dlls)) | |
2006 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
2007 | { | |
2008 | CHECK_STRING_CAR (dlls); | |
2009 | if (library = LoadLibrary (SDATA (XCAR (dlls)))) | |
2010 | break; | |
2011 | } | |
2012 | } | |
2013 | ||
2014 | return library; | |
2015 | } | |
2016 | ||
4ef0d4d0 KS |
2017 | #endif /* HAVE_NTGUI */ |
2018 | ||
2019 | static int x_create_x_image_and_pixmap P_ ((struct frame *, int, int, int, | |
2020 | XImagePtr *, Pixmap *)); | |
2021 | static void x_destroy_x_image P_ ((XImagePtr)); | |
2022 | static void x_put_x_image P_ ((struct frame *, XImagePtr, Pixmap, int, int)); | |
2023 | ||
2024 | ||
2025 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
2026 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
2027 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
2028 | via xmalloc. Print error messages via image_error if an error | |
2029 | occurs. Value is non-zero if successful. | |
2030 | ||
2031 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
2032 | should indicate the bit depth of the image. */ | |
2033 | ||
2034 | static int | |
2035 | x_create_x_image_and_pixmap (f, width, height, depth, ximg, pixmap) | |
2036 | struct frame *f; | |
2037 | int width, height, depth; | |
2038 | XImagePtr *ximg; | |
2039 | Pixmap *pixmap; | |
2040 | { | |
2041 | #ifdef HAVE_X_WINDOWS | |
2042 | Display *display = FRAME_X_DISPLAY (f); | |
2043 | Window window = FRAME_X_WINDOW (f); | |
2044 | Screen *screen = FRAME_X_SCREEN (f); | |
2045 | ||
2046 | xassert (interrupt_input_blocked); | |
2047 | ||
2048 | if (depth <= 0) | |
2049 | depth = DefaultDepthOfScreen (screen); | |
2050 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
2051 | depth, ZPixmap, 0, NULL, width, height, | |
2052 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
2053 | if (*ximg == NULL) | |
2054 | { | |
2055 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
2056 | return 0; | |
2057 | } | |
2058 | ||
2059 | /* Allocate image raster. */ | |
2060 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
2061 | ||
2062 | /* Allocate a pixmap of the same size. */ | |
2063 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2064 | if (*pixmap == NO_PIXMAP) | |
2065 | { | |
2066 | x_destroy_x_image (*ximg); | |
2067 | *ximg = NULL; | |
2068 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2069 | return 0; | |
2070 | } | |
2071 | ||
2072 | return 1; | |
2073 | #endif /* HAVE_X_WINDOWS */ | |
2074 | ||
2075 | #ifdef HAVE_NTGUI | |
2076 | ||
2077 | BITMAPINFOHEADER *header; | |
2078 | HDC hdc; | |
2079 | int scanline_width_bits; | |
2080 | int remainder; | |
2081 | int palette_colors = 0; | |
2082 | ||
2083 | if (depth == 0) | |
2084 | depth = 24; | |
2085 | ||
2086 | if (depth != 1 && depth != 4 && depth != 8 | |
2087 | && depth != 16 && depth != 24 && depth != 32) | |
2088 | { | |
2089 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
2090 | return 0; | |
2091 | } | |
2092 | ||
2093 | scanline_width_bits = width * depth; | |
2094 | remainder = scanline_width_bits % 32; | |
2095 | ||
2096 | if (remainder) | |
2097 | scanline_width_bits += 32 - remainder; | |
2098 | ||
2099 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2100 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2101 | if (depth < 16) | |
2102 | palette_colors = 1 << depth - 1; | |
2103 | ||
2104 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
2105 | if (*ximg == NULL) | |
2106 | { | |
2107 | image_error ("Unable to allocate memory for XImage", Qnil, Qnil); | |
2108 | return 0; | |
2109 | } | |
2110 | ||
2111 | header = &((*ximg)->info.bmiHeader); | |
2112 | bzero (&((*ximg)->info), sizeof (BITMAPINFO)); | |
2113 | header->biSize = sizeof (*header); | |
2114 | header->biWidth = width; | |
2115 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2116 | header->biPlanes = 1; | |
2117 | header->biBitCount = depth; | |
2118 | header->biCompression = BI_RGB; | |
2119 | header->biClrUsed = palette_colors; | |
2120 | ||
2121 | /* TODO: fill in palette. */ | |
2122 | if (depth == 1) | |
2123 | { | |
2124 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2125 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2126 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2127 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2128 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2129 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2130 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2131 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2132 | } | |
2133 | ||
2134 | hdc = get_frame_dc (f); | |
2135 | ||
2136 | /* Create a DIBSection and raster array for the bitmap, | |
2137 | and store its handle in *pixmap. */ | |
2138 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2139 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2140 | /* casting avoids a GCC warning */ |
2141 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2142 | |
2143 | /* Realize display palette and garbage all frames. */ | |
2144 | release_frame_dc (f, hdc); | |
2145 | ||
2146 | if (*pixmap == NULL) | |
2147 | { | |
2148 | DWORD err = GetLastError(); | |
2149 | Lisp_Object errcode; | |
2150 | /* All system errors are < 10000, so the following is safe. */ | |
2151 | XSETINT (errcode, (int) err); | |
2152 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); | |
2153 | x_destroy_x_image (*ximg); | |
2154 | return 0; | |
2155 | } | |
2156 | ||
2157 | return 1; | |
2158 | ||
2159 | #endif /* HAVE_NTGUI */ | |
2160 | ||
2161 | #ifdef MAC_OS | |
2162 | Display *display = FRAME_X_DISPLAY (f); | |
2163 | Window window = FRAME_X_WINDOW (f); | |
2164 | ||
2165 | xassert (interrupt_input_blocked); | |
2166 | ||
2167 | /* Allocate a pixmap of the same size. */ | |
2168 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
2169 | if (*pixmap == NO_PIXMAP) | |
2170 | { | |
4ef0d4d0 KS |
2171 | *ximg = NULL; |
2172 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
2173 | return 0; | |
2174 | } | |
2175 | ||
2176 | LockPixels (GetGWorldPixMap (*pixmap)); | |
2177 | *ximg = *pixmap; | |
2178 | return 1; | |
2179 | ||
2180 | #endif /* MAC_OS */ | |
2181 | } | |
2182 | ||
2183 | ||
2184 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2185 | ||
2186 | static void | |
2187 | x_destroy_x_image (ximg) | |
2188 | XImagePtr ximg; | |
2189 | { | |
2190 | xassert (interrupt_input_blocked); | |
2191 | if (ximg) | |
2192 | { | |
2193 | #ifdef HAVE_X_WINDOWS | |
2194 | xfree (ximg->data); | |
2195 | ximg->data = NULL; | |
2196 | XDestroyImage (ximg); | |
2197 | #endif /* HAVE_X_WINDOWS */ | |
2198 | #ifdef HAVE_NTGUI | |
2199 | /* Data will be freed by DestroyObject. */ | |
2200 | ximg->data = NULL; | |
2201 | xfree (ximg); | |
2202 | #endif /* HAVE_NTGUI */ | |
2203 | #ifdef MAC_OS | |
2204 | XDestroyImage (ximg); | |
2205 | #endif /* MAC_OS */ | |
2206 | } | |
2207 | } | |
2208 | ||
2209 | ||
2210 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2211 | are width and height of both the image and pixmap. */ | |
2212 | ||
2213 | static void | |
2214 | x_put_x_image (f, ximg, pixmap, width, height) | |
2215 | struct frame *f; | |
2216 | XImagePtr ximg; | |
2217 | Pixmap pixmap; | |
2218 | int width, height; | |
2219 | { | |
2220 | #ifdef HAVE_X_WINDOWS | |
2221 | GC gc; | |
2222 | ||
2223 | xassert (interrupt_input_blocked); | |
2224 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2225 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2226 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2227 | #endif /* HAVE_X_WINDOWS */ | |
2228 | ||
2229 | #ifdef HAVE_NTGUI | |
2230 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2231 | HDC hdc = get_frame_dc (f); | |
2232 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2233 | release_frame_dc (f, hdc); | |
2234 | #endif | |
2235 | #endif /* HAVE_NTGUI */ | |
2236 | ||
2237 | #ifdef MAC_OS | |
2238 | xassert (ximg == pixmap); | |
2239 | #endif /* MAC_OS */ | |
2240 | } | |
2241 | ||
2242 | \f | |
2243 | /*********************************************************************** | |
2244 | File Handling | |
2245 | ***********************************************************************/ | |
2246 | ||
4ef0d4d0 KS |
2247 | static unsigned char *slurp_file P_ ((char *, int *)); |
2248 | ||
2249 | ||
2250 | /* Find image file FILE. Look in data-directory, then | |
022af124 KH |
2251 | x-bitmap-file-path. Value is the encoded full name of the file |
2252 | found, or nil if not found. */ | |
4ef0d4d0 | 2253 | |
c640aa9b | 2254 | Lisp_Object |
4ef0d4d0 KS |
2255 | x_find_image_file (file) |
2256 | Lisp_Object file; | |
2257 | { | |
2258 | Lisp_Object file_found, search_path; | |
2259 | struct gcpro gcpro1, gcpro2; | |
2260 | int fd; | |
2261 | ||
2262 | file_found = Qnil; | |
2263 | search_path = Fcons (Vdata_directory, Vx_bitmap_file_path); | |
2264 | GCPRO2 (file_found, search_path); | |
2265 | ||
2266 | /* Try to find FILE in data-directory, then x-bitmap-file-path. */ | |
2267 | fd = openp (search_path, file, Qnil, &file_found, Qnil); | |
2268 | ||
2269 | if (fd == -1) | |
2270 | file_found = Qnil; | |
2271 | else | |
022af124 KH |
2272 | { |
2273 | file_found = ENCODE_FILE (file_found); | |
2274 | close (fd); | |
2275 | } | |
4ef0d4d0 KS |
2276 | |
2277 | UNGCPRO; | |
2278 | return file_found; | |
2279 | } | |
2280 | ||
2281 | ||
2282 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2283 | with xmalloc holding FILE's contents. Value is null if an error | |
2284 | occurred. *SIZE is set to the size of the file. */ | |
2285 | ||
2286 | static unsigned char * | |
2287 | slurp_file (file, size) | |
2288 | char *file; | |
2289 | int *size; | |
2290 | { | |
2291 | FILE *fp = NULL; | |
2292 | unsigned char *buf = NULL; | |
2293 | struct stat st; | |
2294 | ||
2295 | if (stat (file, &st) == 0 | |
2296 | && (fp = fopen (file, "rb")) != NULL | |
fa8459a3 | 2297 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2298 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2299 | { | |
2300 | *size = st.st_size; | |
2301 | fclose (fp); | |
2302 | } | |
2303 | else | |
2304 | { | |
2305 | if (fp) | |
2306 | fclose (fp); | |
2307 | if (buf) | |
2308 | { | |
2309 | xfree (buf); | |
2310 | buf = NULL; | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | return buf; | |
2315 | } | |
2316 | ||
2317 | ||
2318 | \f | |
2319 | #ifdef MAC_OS | |
2320 | ||
2321 | /*********************************************************************** | |
2322 | MAC Image Load Functions | |
2323 | ***********************************************************************/ | |
2324 | ||
2325 | static int image_load_quicktime P_ ((struct frame *, struct image *img, | |
2326 | OSType)); | |
2327 | #ifdef MAC_OSX | |
2328 | static int image_load_quartz2d P_ ((struct frame *, struct image *img, int)); | |
2329 | #endif | |
2330 | ||
2331 | static OSErr | |
2332 | find_image_fsspec (specified_file, file, fss) | |
2333 | Lisp_Object specified_file, *file; | |
2334 | FSSpec *fss; | |
2335 | { | |
4ef0d4d0 | 2336 | OSErr err; |
2d22e7ed | 2337 | AEDesc desc; |
4ef0d4d0 KS |
2338 | |
2339 | *file = x_find_image_file (specified_file); | |
2340 | if (!STRINGP (*file)) | |
2341 | return fnfErr; /* file or directory not found; | |
2342 | incomplete pathname */ | |
2343 | /* Try to open the image file. */ | |
2d22e7ed YM |
2344 | err = AECoercePtr (TYPE_FILE_NAME, SDATA (*file), |
2345 | SBYTES (*file), typeFSS, &desc); | |
4ef0d4d0 | 2346 | if (err == noErr) |
2d22e7ed YM |
2347 | { |
2348 | #if TARGET_API_MAC_CARBON | |
2349 | err = AEGetDescData (&desc, fss, sizeof (FSSpec)); | |
4ef0d4d0 | 2350 | #else |
2d22e7ed | 2351 | *fss = *(FSSpec *)(*(desc.dataHandle)); |
4ef0d4d0 | 2352 | #endif |
2d22e7ed YM |
2353 | AEDisposeDesc (&desc); |
2354 | } | |
4ef0d4d0 KS |
2355 | return err; |
2356 | } | |
2357 | ||
2358 | static int | |
2359 | image_load_qt_1 (f, img, type, fss, dh) | |
2360 | struct frame *f; | |
2361 | struct image *img; | |
2362 | OSType type; | |
2363 | FSSpec *fss; | |
2364 | Handle dh; | |
2365 | { | |
2366 | OSErr err; | |
2367 | GraphicsImportComponent gi; | |
2368 | Rect rect; | |
2369 | int width, height; | |
de297941 | 2370 | ImageDescriptionHandle desc_handle; |
4ef0d4d0 KS |
2371 | short draw_all_pixels; |
2372 | Lisp_Object specified_bg; | |
2373 | XColor color; | |
2374 | XImagePtr ximg; | |
2375 | RGBColor bg_color; | |
2376 | ||
2377 | err = OpenADefaultComponent (GraphicsImporterComponentType, | |
2378 | type, &gi); | |
2379 | if (err != noErr) | |
2380 | { | |
2381 | image_error ("Cannot get importer component for `%s'", img->spec, Qnil); | |
2382 | return 0; | |
2383 | } | |
2384 | if (dh == NULL) | |
2385 | { | |
2386 | /* read from file system spec */ | |
2387 | err = GraphicsImportSetDataFile (gi, fss); | |
2388 | if (err != noErr) | |
2389 | { | |
2390 | image_error ("Cannot set fsspec to graphics importer for '%s'", | |
2391 | img->spec, Qnil); | |
2392 | goto error; | |
2393 | } | |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | /* read from data handle */ | |
2398 | err = GraphicsImportSetDataHandle (gi, dh); | |
2399 | if (err != noErr) | |
2400 | { | |
2401 | image_error ("Cannot set data handle to graphics importer for `%s'", | |
2402 | img->spec, Qnil); | |
2403 | goto error; | |
2404 | } | |
2405 | } | |
de297941 YM |
2406 | err = GraphicsImportGetImageDescription (gi, &desc_handle); |
2407 | if (err != noErr || desc_handle == NULL) | |
4ef0d4d0 KS |
2408 | { |
2409 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2410 | goto error; | |
2411 | } | |
de297941 YM |
2412 | width = img->width = (*desc_handle)->width; |
2413 | height = img->height = (*desc_handle)->height; | |
2414 | DisposeHandle ((Handle)desc_handle); | |
2415 | ||
2416 | if (!check_image_size (f, width, height)) | |
2417 | { | |
2418 | image_error ("Invalid image size", Qnil, Qnil); | |
2419 | goto error; | |
2420 | } | |
2421 | ||
4ef0d4d0 KS |
2422 | err = GraphicsImportDoesDrawAllPixels (gi, &draw_all_pixels); |
2423 | #if 0 | |
2424 | /* Don't check the error code here. It may have an undocumented | |
2425 | value -32766. */ | |
2426 | if (err != noErr) | |
2427 | { | |
2428 | image_error ("Error reading `%s'", img->spec, Qnil); | |
2429 | goto error; | |
2430 | } | |
2431 | #endif | |
2432 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2433 | { | |
2434 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2435 | if (!STRINGP (specified_bg) || | |
2436 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2437 | { | |
2438 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2439 | color.red = RED16_FROM_ULONG (color.pixel); | |
2440 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2441 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
2446 | goto error; | |
2447 | if (draw_all_pixels != graphicsImporterDrawsAllPixels) | |
2448 | { | |
2a316a84 ST |
2449 | CGrafPtr old_port; |
2450 | GDHandle old_gdh; | |
2451 | ||
2452 | GetGWorld (&old_port, &old_gdh); | |
4ef0d4d0 KS |
2453 | SetGWorld (ximg, NULL); |
2454 | bg_color.red = color.red; | |
2455 | bg_color.green = color.green; | |
2456 | bg_color.blue = color.blue; | |
2457 | RGBBackColor (&bg_color); | |
2458 | #if TARGET_API_MAC_CARBON | |
2459 | GetPortBounds (ximg, &rect); | |
2460 | EraseRect (&rect); | |
2461 | #else | |
2462 | EraseRect (&(ximg->portRect)); | |
2463 | #endif | |
2a316a84 | 2464 | SetGWorld (old_port, old_gdh); |
4ef0d4d0 KS |
2465 | } |
2466 | GraphicsImportSetGWorld (gi, ximg, NULL); | |
2467 | GraphicsImportDraw (gi); | |
2468 | CloseComponent (gi); | |
2469 | ||
2470 | /* Maybe fill in the background field while we have ximg handy. */ | |
2471 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2472 | IMAGE_BACKGROUND (img, f, ximg); | |
2473 | ||
2474 | /* Put the image into the pixmap. */ | |
2475 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2476 | x_destroy_x_image (ximg); | |
2477 | return 1; | |
2478 | ||
2479 | error: | |
2480 | CloseComponent (gi); | |
2481 | return 0; | |
2482 | } | |
2483 | ||
2484 | ||
2485 | /* Load an image using the QuickTime Graphics Importer. | |
2486 | Note: The alpha channel does not work for PNG images. */ | |
2487 | static int | |
2488 | image_load_quicktime (f, img, type) | |
2489 | struct frame *f; | |
2490 | struct image *img; | |
2491 | OSType type; | |
2492 | { | |
2493 | Lisp_Object specified_file; | |
2494 | Lisp_Object specified_data; | |
2495 | OSErr err; | |
2496 | ||
2497 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2498 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2499 | ||
2500 | if (NILP (specified_data)) | |
2501 | { | |
2502 | /* Read from a file */ | |
2503 | Lisp_Object file; | |
2504 | FSSpec fss; | |
2505 | ||
2506 | err = find_image_fsspec (specified_file, &file, &fss); | |
2507 | if (err != noErr) | |
2508 | { | |
2509 | if (err == fnfErr) | |
2510 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2511 | else | |
2512 | image_error ("Cannot open `%s'", file, Qnil); | |
2513 | return 0; | |
2514 | } | |
2515 | return image_load_qt_1 (f, img, type, &fss, NULL); | |
2516 | } | |
2517 | else | |
2518 | { | |
2519 | /* Memory source! */ | |
2520 | int success_p; | |
2521 | Handle dh; | |
2522 | ||
2523 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
2524 | if (err != noErr) | |
2525 | { | |
2526 | image_error ("Cannot allocate data handle for `%s'", | |
2527 | img->spec, Qnil); | |
2528 | return 0; | |
2529 | } | |
2530 | success_p = image_load_qt_1 (f, img, type, NULL, dh); | |
2531 | DisposeHandle (dh); | |
2532 | return success_p; | |
2533 | } | |
2534 | } | |
2535 | ||
2536 | ||
2537 | #ifdef MAC_OSX | |
2538 | /* Load a PNG/JPEG image using Quartz 2D decoding routines. | |
2539 | CGImageCreateWithPNGDataProvider is provided after Mac OS X 10.2. | |
2540 | So don't use this function directly but determine at runtime | |
2541 | whether it exists. */ | |
2542 | typedef CGImageRef (*CGImageCreateWithPNGDataProviderProcType) | |
2543 | (CGDataProviderRef, const float [], bool, CGColorRenderingIntent); | |
2544 | static CGImageCreateWithPNGDataProviderProcType MyCGImageCreateWithPNGDataProvider; | |
2545 | ||
2546 | ||
2547 | static void | |
2548 | init_image_func_pointer () | |
2549 | { | |
2550 | if (NSIsSymbolNameDefined ("_CGImageCreateWithPNGDataProvider")) | |
2551 | { | |
2552 | MyCGImageCreateWithPNGDataProvider | |
2553 | = (CGImageCreateWithPNGDataProviderProcType) | |
2554 | NSAddressOfSymbol (NSLookupAndBindSymbol | |
2555 | ("_CGImageCreateWithPNGDataProvider")); | |
2556 | } | |
2557 | else | |
2558 | MyCGImageCreateWithPNGDataProvider = NULL; | |
2559 | } | |
2560 | ||
2561 | ||
2562 | static int | |
2563 | image_load_quartz2d (f, img, png_p) | |
2564 | struct frame *f; | |
2565 | struct image *img; | |
2566 | int png_p; | |
2567 | { | |
2568 | Lisp_Object file, specified_file; | |
2569 | Lisp_Object specified_data, specified_bg; | |
2570 | struct gcpro gcpro1; | |
2571 | CGDataProviderRef source; | |
2572 | CGImageRef image; | |
2573 | int width, height; | |
2574 | XColor color; | |
2575 | XImagePtr ximg = NULL; | |
2576 | CGContextRef context; | |
2577 | CGRect rectangle; | |
2578 | ||
2579 | /* Open the file. */ | |
2580 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
2581 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
2582 | ||
2583 | file = Qnil; | |
2584 | GCPRO1 (file); | |
2585 | ||
2586 | if (NILP (specified_data)) | |
2587 | { | |
2588 | CFStringRef path; | |
2589 | CFURLRef url; | |
2590 | ||
2591 | file = x_find_image_file (specified_file); | |
2592 | if (!STRINGP (file)) | |
2593 | { | |
2594 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
2595 | UNGCPRO; | |
2596 | return 0; | |
2597 | } | |
a5e700ca | 2598 | path = cfstring_create_with_string (file); |
4ef0d4d0 KS |
2599 | url = CFURLCreateWithFileSystemPath (NULL, path, |
2600 | kCFURLPOSIXPathStyle, 0); | |
2601 | CFRelease (path); | |
2602 | source = CGDataProviderCreateWithURL (url); | |
2603 | CFRelease (url); | |
2604 | } | |
2605 | else | |
2606 | source = CGDataProviderCreateWithData (NULL, SDATA (specified_data), | |
2607 | SBYTES (specified_data), NULL); | |
2608 | ||
2609 | if (png_p) | |
2610 | image = (*MyCGImageCreateWithPNGDataProvider) (source, NULL, FALSE, | |
2611 | kCGRenderingIntentDefault); | |
2612 | else | |
2613 | image = CGImageCreateWithJPEGDataProvider (source, NULL, FALSE, | |
2614 | kCGRenderingIntentDefault); | |
2615 | ||
2616 | CGDataProviderRelease (source); | |
2617 | if (image == NULL) | |
2618 | { | |
2619 | UNGCPRO; | |
2620 | image_error ("Error reading image `%s'", img->spec, Qnil); | |
2621 | return 0; | |
2622 | } | |
de297941 YM |
2623 | width = img->width = CGImageGetWidth (image); |
2624 | height = img->height = CGImageGetHeight (image); | |
2625 | ||
2626 | if (!check_image_size (f, width, height)) | |
2627 | { | |
54eaa188 | 2628 | CGImageRelease (image); |
de297941 YM |
2629 | UNGCPRO; |
2630 | image_error ("Invalid image size", Qnil, Qnil); | |
2631 | return 0; | |
2632 | } | |
4ef0d4d0 KS |
2633 | |
2634 | if (png_p) | |
2635 | { | |
2636 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
2637 | if (!STRINGP (specified_bg) || | |
2638 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
2639 | { | |
2640 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
2641 | color.red = RED16_FROM_ULONG (color.pixel); | |
2642 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
2643 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
2644 | } | |
2645 | } | |
de297941 | 2646 | |
4ef0d4d0 KS |
2647 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
2648 | { | |
2649 | CGImageRelease (image); | |
2650 | UNGCPRO; | |
2651 | return 0; | |
2652 | } | |
2653 | rectangle = CGRectMake (0, 0, width, height); | |
2654 | QDBeginCGContext (ximg, &context); | |
2655 | if (png_p) | |
2656 | { | |
2657 | CGContextSetRGBFillColor (context, color.red / 65535.0, | |
2658 | color.green / 65535.0, | |
2659 | color.blue / 65535.0, 1.0); | |
2660 | CGContextFillRect (context, rectangle); | |
2661 | } | |
2662 | CGContextDrawImage (context, rectangle, image); | |
2663 | QDEndCGContext (ximg, &context); | |
2664 | CGImageRelease (image); | |
2665 | ||
2666 | /* Maybe fill in the background field while we have ximg handy. */ | |
2667 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2668 | IMAGE_BACKGROUND (img, f, ximg); | |
2669 | ||
2670 | /* Put the image into the pixmap. */ | |
2671 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
2672 | x_destroy_x_image (ximg); | |
2673 | UNGCPRO; | |
2674 | return 1; | |
2675 | } | |
2676 | #endif | |
2677 | ||
2678 | #endif /* MAC_OS */ | |
2679 | ||
2680 | \f | |
2681 | /*********************************************************************** | |
2682 | XBM images | |
2683 | ***********************************************************************/ | |
2684 | ||
2685 | static int xbm_scan P_ ((unsigned char **, unsigned char *, char *, int *)); | |
2686 | static int xbm_load P_ ((struct frame *f, struct image *img)); | |
2687 | static int xbm_load_image P_ ((struct frame *f, struct image *img, | |
2688 | unsigned char *, unsigned char *)); | |
2689 | static int xbm_image_p P_ ((Lisp_Object object)); | |
f1f25b99 CY |
2690 | static int xbm_read_bitmap_data P_ ((struct frame *f, |
2691 | unsigned char *, unsigned char *, | |
4ef0d4d0 KS |
2692 | int *, int *, unsigned char **)); |
2693 | static int xbm_file_p P_ ((Lisp_Object)); | |
2694 | ||
2695 | ||
2696 | /* Indices of image specification fields in xbm_format, below. */ | |
2697 | ||
2698 | enum xbm_keyword_index | |
2699 | { | |
2700 | XBM_TYPE, | |
2701 | XBM_FILE, | |
2702 | XBM_WIDTH, | |
2703 | XBM_HEIGHT, | |
2704 | XBM_DATA, | |
2705 | XBM_FOREGROUND, | |
2706 | XBM_BACKGROUND, | |
2707 | XBM_ASCENT, | |
2708 | XBM_MARGIN, | |
2709 | XBM_RELIEF, | |
2710 | XBM_ALGORITHM, | |
2711 | XBM_HEURISTIC_MASK, | |
2712 | XBM_MASK, | |
2713 | XBM_LAST | |
2714 | }; | |
2715 | ||
2716 | /* Vector of image_keyword structures describing the format | |
2717 | of valid XBM image specifications. */ | |
2718 | ||
2719 | static struct image_keyword xbm_format[XBM_LAST] = | |
2720 | { | |
2721 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2722 | {":file", IMAGE_STRING_VALUE, 0}, | |
2723 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2724 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2725 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2726 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2727 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2728 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
2729 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
2730 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
2731 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2732 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2733 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2734 | }; | |
2735 | ||
2736 | /* Structure describing the image type XBM. */ | |
2737 | ||
2738 | static struct image_type xbm_type = | |
2739 | { | |
2740 | &Qxbm, | |
2741 | xbm_image_p, | |
2742 | xbm_load, | |
2743 | x_clear_image, | |
2744 | NULL | |
2745 | }; | |
2746 | ||
2747 | /* Tokens returned from xbm_scan. */ | |
2748 | ||
2749 | enum xbm_token | |
2750 | { | |
2751 | XBM_TK_IDENT = 256, | |
2752 | XBM_TK_NUMBER | |
2753 | }; | |
2754 | ||
2755 | ||
2756 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2757 | A valid specification is a list starting with the symbol `image' | |
2758 | The rest of the list is a property list which must contain an | |
2759 | entry `:type xbm.. | |
2760 | ||
2761 | If the specification specifies a file to load, it must contain | |
2762 | an entry `:file FILENAME' where FILENAME is a string. | |
2763 | ||
2764 | If the specification is for a bitmap loaded from memory it must | |
2765 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2766 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2767 | ||
2768 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2769 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2770 | ||
2771 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2772 | ||
2773 | 3. a vector of strings or bool-vectors, one for each line of the | |
2774 | bitmap. | |
2775 | ||
2776 | 4. A string containing an in-memory XBM file. WIDTH and HEIGHT | |
2777 | may not be specified in this case because they are defined in the | |
2778 | XBM file. | |
2779 | ||
2780 | Both the file and data forms may contain the additional entries | |
2781 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2782 | foreground and background of the frame on which the image is | |
2783 | displayed is used. */ | |
2784 | ||
2785 | static int | |
2786 | xbm_image_p (object) | |
2787 | Lisp_Object object; | |
2788 | { | |
2789 | struct image_keyword kw[XBM_LAST]; | |
2790 | ||
2791 | bcopy (xbm_format, kw, sizeof kw); | |
2792 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) | |
2793 | return 0; | |
2794 | ||
2795 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2796 | ||
2797 | if (kw[XBM_FILE].count) | |
2798 | { | |
2799 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2800 | return 0; | |
2801 | } | |
2802 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2803 | { | |
2804 | /* In-memory XBM file. */ | |
2805 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2806 | return 0; | |
2807 | } | |
2808 | else | |
2809 | { | |
2810 | Lisp_Object data; | |
2811 | int width, height; | |
2812 | ||
2813 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2814 | if (!kw[XBM_WIDTH].count | |
2815 | || !kw[XBM_HEIGHT].count | |
2816 | || !kw[XBM_DATA].count) | |
2817 | return 0; | |
2818 | ||
2819 | data = kw[XBM_DATA].value; | |
2820 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2821 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2822 | ||
2823 | /* Check type of data, and width and height against contents of | |
2824 | data. */ | |
2825 | if (VECTORP (data)) | |
2826 | { | |
2827 | int i; | |
2828 | ||
2829 | /* Number of elements of the vector must be >= height. */ | |
2830 | if (XVECTOR (data)->size < height) | |
2831 | return 0; | |
2832 | ||
2833 | /* Each string or bool-vector in data must be large enough | |
2834 | for one line of the image. */ | |
2835 | for (i = 0; i < height; ++i) | |
2836 | { | |
2837 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2838 | ||
2839 | if (STRINGP (elt)) | |
2840 | { | |
2841 | if (SCHARS (elt) | |
2842 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2843 | return 0; | |
2844 | } | |
2845 | else if (BOOL_VECTOR_P (elt)) | |
2846 | { | |
2847 | if (XBOOL_VECTOR (elt)->size < width) | |
2848 | return 0; | |
2849 | } | |
2850 | else | |
2851 | return 0; | |
2852 | } | |
2853 | } | |
2854 | else if (STRINGP (data)) | |
2855 | { | |
2856 | if (SCHARS (data) | |
2857 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2858 | return 0; | |
2859 | } | |
2860 | else if (BOOL_VECTOR_P (data)) | |
2861 | { | |
2862 | if (XBOOL_VECTOR (data)->size < width * height) | |
2863 | return 0; | |
2864 | } | |
2865 | else | |
2866 | return 0; | |
2867 | } | |
2868 | ||
2869 | return 1; | |
2870 | } | |
2871 | ||
2872 | ||
2873 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2874 | either an enumerator from enum xbm_token, or a character for a | |
2875 | single-character token, or 0 at end of file. If scanning an | |
2876 | identifier, store the lexeme of the identifier in SVAL. If | |
2877 | scanning a number, store its value in *IVAL. */ | |
2878 | ||
2879 | static int | |
2880 | xbm_scan (s, end, sval, ival) | |
2881 | unsigned char **s, *end; | |
2882 | char *sval; | |
2883 | int *ival; | |
2884 | { | |
2885 | unsigned int c; | |
2886 | ||
2887 | loop: | |
2888 | ||
2889 | /* Skip white space. */ | |
2890 | while (*s < end && (c = *(*s)++, isspace (c))) | |
2891 | ; | |
2892 | ||
2893 | if (*s >= end) | |
2894 | c = 0; | |
2895 | else if (isdigit (c)) | |
2896 | { | |
2897 | int value = 0, digit; | |
2898 | ||
2899 | if (c == '0' && *s < end) | |
2900 | { | |
2901 | c = *(*s)++; | |
2902 | if (c == 'x' || c == 'X') | |
2903 | { | |
2904 | while (*s < end) | |
2905 | { | |
2906 | c = *(*s)++; | |
2907 | if (isdigit (c)) | |
2908 | digit = c - '0'; | |
2909 | else if (c >= 'a' && c <= 'f') | |
2910 | digit = c - 'a' + 10; | |
2911 | else if (c >= 'A' && c <= 'F') | |
2912 | digit = c - 'A' + 10; | |
2913 | else | |
2914 | break; | |
2915 | value = 16 * value + digit; | |
2916 | } | |
2917 | } | |
2918 | else if (isdigit (c)) | |
2919 | { | |
2920 | value = c - '0'; | |
2921 | while (*s < end | |
2922 | && (c = *(*s)++, isdigit (c))) | |
2923 | value = 8 * value + c - '0'; | |
2924 | } | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | value = c - '0'; | |
2929 | while (*s < end | |
2930 | && (c = *(*s)++, isdigit (c))) | |
2931 | value = 10 * value + c - '0'; | |
2932 | } | |
2933 | ||
2934 | if (*s < end) | |
2935 | *s = *s - 1; | |
2936 | *ival = value; | |
2937 | c = XBM_TK_NUMBER; | |
2938 | } | |
2939 | else if (isalpha (c) || c == '_') | |
2940 | { | |
2941 | *sval++ = c; | |
2942 | while (*s < end | |
2943 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
2944 | *sval++ = c; | |
2945 | *sval = 0; | |
2946 | if (*s < end) | |
2947 | *s = *s - 1; | |
2948 | c = XBM_TK_IDENT; | |
2949 | } | |
2950 | else if (c == '/' && **s == '*') | |
2951 | { | |
2952 | /* C-style comment. */ | |
2953 | ++*s; | |
2954 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2955 | ++*s; | |
2956 | if (**s) | |
2957 | { | |
2958 | *s += 2; | |
2959 | goto loop; | |
2960 | } | |
2961 | } | |
2962 | ||
2963 | return c; | |
2964 | } | |
2965 | ||
2966 | #ifdef HAVE_NTGUI | |
2967 | ||
2968 | /* Create a Windows bitmap from X bitmap data. */ | |
2969 | static HBITMAP | |
2970 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2971 | { | |
2972 | static unsigned char swap_nibble[16] | |
2973 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2974 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2975 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2976 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2977 | int i, j, w1, w2; | |
2978 | unsigned char *bits, *p; | |
2979 | HBITMAP bmp; | |
2980 | ||
2981 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2982 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
2983 | bits = (unsigned char *) alloca (height * w2); | |
2984 | bzero (bits, height * w2); | |
2985 | for (i = 0; i < height; i++) | |
2986 | { | |
2987 | p = bits + i*w2; | |
2988 | for (j = 0; j < w1; j++) | |
2989 | { | |
2990 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2991 | unsigned char c = *data++; | |
2992 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2993 | | (swap_nibble[(c>>4) & 0xf])); | |
2994 | } | |
2995 | } | |
2996 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2997 | ||
2998 | return bmp; | |
2999 | } | |
3000 | ||
3001 | static void convert_mono_to_color_image (f, img, foreground, background) | |
3002 | struct frame *f; | |
3003 | struct image *img; | |
3004 | COLORREF foreground, background; | |
3005 | { | |
3006 | HDC hdc, old_img_dc, new_img_dc; | |
3007 | HGDIOBJ old_prev, new_prev; | |
3008 | HBITMAP new_pixmap; | |
3009 | ||
3010 | hdc = get_frame_dc (f); | |
3011 | old_img_dc = CreateCompatibleDC (hdc); | |
3012 | new_img_dc = CreateCompatibleDC (hdc); | |
3013 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
3014 | release_frame_dc (f, hdc); | |
3015 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
3016 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
3017 | SetTextColor (new_img_dc, foreground); | |
3018 | SetBkColor (new_img_dc, background); | |
3019 | ||
3020 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
3021 | 0, 0, SRCCOPY); | |
3022 | ||
3023 | SelectObject (old_img_dc, old_prev); | |
3024 | SelectObject (new_img_dc, new_prev); | |
3025 | DeleteDC (old_img_dc); | |
3026 | DeleteDC (new_img_dc); | |
3027 | DeleteObject (img->pixmap); | |
3028 | if (new_pixmap == 0) | |
3029 | fprintf (stderr, "Failed to convert image to color.\n"); | |
3030 | else | |
3031 | img->pixmap = new_pixmap; | |
3032 | } | |
3033 | ||
3034 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
3035 | ||
3036 | #else | |
3037 | ||
3038 | #define XBM_BIT_SHUFFLE(b) (b) | |
3039 | ||
3040 | #endif /* HAVE_NTGUI */ | |
3041 | ||
3042 | ||
3043 | static void | |
3044 | Create_Pixmap_From_Bitmap_Data(f, img, data, fg, bg, non_default_colors) | |
3045 | struct frame *f; | |
3046 | struct image *img; | |
3047 | char *data; | |
3048 | RGB_PIXEL_COLOR fg, bg; | |
3049 | int non_default_colors; | |
3050 | { | |
3051 | #ifdef HAVE_NTGUI | |
3052 | img->pixmap | |
3053 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
3054 | ||
3055 | /* If colors were specified, transfer the bitmap to a color one. */ | |
3056 | if (non_default_colors) | |
3057 | convert_mono_to_color_image (f, img, fg, bg); | |
3058 | #else | |
3059 | img->pixmap | |
3060 | = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
3061 | FRAME_X_WINDOW (f), | |
3062 | data, | |
3063 | img->width, img->height, | |
3064 | fg, bg, | |
3065 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
3066 | #endif /* HAVE_NTGUI */ | |
3067 | } | |
3068 | ||
3069 | ||
3070 | ||
3071 | /* Replacement for XReadBitmapFileData which isn't available under old | |
3072 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
3073 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
3074 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
3075 | Value is non-zero if successful. DATA null means just test if | |
3076 | CONTENTS looks like an in-memory XBM file. */ | |
3077 | ||
3078 | static int | |
f1f25b99 CY |
3079 | xbm_read_bitmap_data (f, contents, end, width, height, data) |
3080 | struct frame *f; | |
4ef0d4d0 KS |
3081 | unsigned char *contents, *end; |
3082 | int *width, *height; | |
3083 | unsigned char **data; | |
3084 | { | |
3085 | unsigned char *s = contents; | |
3086 | char buffer[BUFSIZ]; | |
3087 | int padding_p = 0; | |
3088 | int v10 = 0; | |
3089 | int bytes_per_line, i, nbytes; | |
3090 | unsigned char *p; | |
3091 | int value; | |
3092 | int LA1; | |
3093 | ||
3094 | #define match() \ | |
3095 | LA1 = xbm_scan (&s, end, buffer, &value) | |
3096 | ||
3097 | #define expect(TOKEN) \ | |
3098 | if (LA1 != (TOKEN)) \ | |
3099 | goto failure; \ | |
3100 | else \ | |
3101 | match () | |
3102 | ||
3103 | #define expect_ident(IDENT) \ | |
3104 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
3105 | match (); \ | |
3106 | else \ | |
3107 | goto failure | |
3108 | ||
3109 | *width = *height = -1; | |
3110 | if (data) | |
3111 | *data = NULL; | |
3112 | LA1 = xbm_scan (&s, end, buffer, &value); | |
3113 | ||
3114 | /* Parse defines for width, height and hot-spots. */ | |
3115 | while (LA1 == '#') | |
3116 | { | |
3117 | match (); | |
3118 | expect_ident ("define"); | |
3119 | expect (XBM_TK_IDENT); | |
3120 | ||
3121 | if (LA1 == XBM_TK_NUMBER); | |
3122 | { | |
3123 | char *p = strrchr (buffer, '_'); | |
3124 | p = p ? p + 1 : buffer; | |
3125 | if (strcmp (p, "width") == 0) | |
3126 | *width = value; | |
3127 | else if (strcmp (p, "height") == 0) | |
3128 | *height = value; | |
3129 | } | |
3130 | expect (XBM_TK_NUMBER); | |
3131 | } | |
3132 | ||
f1f25b99 | 3133 | if (!check_image_size (f, *width, *height)) |
4ef0d4d0 KS |
3134 | goto failure; |
3135 | else if (data == NULL) | |
3136 | goto success; | |
3137 | ||
3138 | /* Parse bits. Must start with `static'. */ | |
3139 | expect_ident ("static"); | |
3140 | if (LA1 == XBM_TK_IDENT) | |
3141 | { | |
3142 | if (strcmp (buffer, "unsigned") == 0) | |
3143 | { | |
3144 | match (); | |
3145 | expect_ident ("char"); | |
3146 | } | |
3147 | else if (strcmp (buffer, "short") == 0) | |
3148 | { | |
3149 | match (); | |
3150 | v10 = 1; | |
3151 | if (*width % 16 && *width % 16 < 9) | |
3152 | padding_p = 1; | |
3153 | } | |
3154 | else if (strcmp (buffer, "char") == 0) | |
3155 | match (); | |
3156 | else | |
3157 | goto failure; | |
3158 | } | |
3159 | else | |
3160 | goto failure; | |
3161 | ||
3162 | expect (XBM_TK_IDENT); | |
3163 | expect ('['); | |
3164 | expect (']'); | |
3165 | expect ('='); | |
3166 | expect ('{'); | |
3167 | ||
3168 | bytes_per_line = (*width + 7) / 8 + padding_p; | |
3169 | nbytes = bytes_per_line * *height; | |
fa8459a3 | 3170 | p = *data = (unsigned char *) xmalloc (nbytes); |
4ef0d4d0 KS |
3171 | |
3172 | if (v10) | |
3173 | { | |
3174 | for (i = 0; i < nbytes; i += 2) | |
3175 | { | |
3176 | int val = value; | |
3177 | expect (XBM_TK_NUMBER); | |
3178 | ||
3179 | *p++ = XBM_BIT_SHUFFLE (val); | |
3180 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
3181 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
3182 | ||
3183 | if (LA1 == ',' || LA1 == '}') | |
3184 | match (); | |
3185 | else | |
3186 | goto failure; | |
3187 | } | |
3188 | } | |
3189 | else | |
3190 | { | |
3191 | for (i = 0; i < nbytes; ++i) | |
3192 | { | |
3193 | int val = value; | |
3194 | expect (XBM_TK_NUMBER); | |
3195 | ||
3196 | *p++ = XBM_BIT_SHUFFLE (val); | |
3197 | ||
3198 | if (LA1 == ',' || LA1 == '}') | |
3199 | match (); | |
3200 | else | |
3201 | goto failure; | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | success: | |
3206 | return 1; | |
3207 | ||
3208 | failure: | |
3209 | ||
3210 | if (data && *data) | |
3211 | { | |
3212 | xfree (*data); | |
3213 | *data = NULL; | |
3214 | } | |
3215 | return 0; | |
3216 | ||
3217 | #undef match | |
3218 | #undef expect | |
3219 | #undef expect_ident | |
3220 | } | |
3221 | ||
3222 | ||
3223 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
3224 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
3225 | successful. */ | |
3226 | ||
3227 | static int | |
3228 | xbm_load_image (f, img, contents, end) | |
3229 | struct frame *f; | |
3230 | struct image *img; | |
3231 | unsigned char *contents, *end; | |
3232 | { | |
3233 | int rc; | |
3234 | unsigned char *data; | |
3235 | int success_p = 0; | |
3236 | ||
f1f25b99 | 3237 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, &data); |
4ef0d4d0 KS |
3238 | if (rc) |
3239 | { | |
3240 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3241 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3242 | int non_default_colors = 0; | |
3243 | Lisp_Object value; | |
3244 | ||
3245 | xassert (img->width > 0 && img->height > 0); | |
3246 | ||
3247 | /* Get foreground and background colors, maybe allocate colors. */ | |
3248 | value = image_spec_value (img->spec, QCforeground, NULL); | |
3249 | if (!NILP (value)) | |
3250 | { | |
3251 | foreground = x_alloc_image_color (f, img, value, foreground); | |
3252 | non_default_colors = 1; | |
3253 | } | |
3254 | value = image_spec_value (img->spec, QCbackground, NULL); | |
3255 | if (!NILP (value)) | |
3256 | { | |
3257 | background = x_alloc_image_color (f, img, value, background); | |
3258 | img->background = background; | |
3259 | img->background_valid = 1; | |
3260 | non_default_colors = 1; | |
3261 | } | |
3262 | ||
1f026899 | 3263 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
3264 | foreground, background, |
3265 | non_default_colors); | |
3266 | xfree (data); | |
3267 | ||
3268 | if (img->pixmap == NO_PIXMAP) | |
3269 | { | |
3270 | x_clear_image (f, img); | |
3271 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
3272 | } | |
3273 | else | |
3274 | success_p = 1; | |
3275 | } | |
3276 | else | |
3277 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3278 | ||
3279 | return success_p; | |
3280 | } | |
3281 | ||
3282 | ||
3283 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
3284 | ||
3285 | static int | |
3286 | xbm_file_p (data) | |
3287 | Lisp_Object data; | |
3288 | { | |
3289 | int w, h; | |
3290 | return (STRINGP (data) | |
f1f25b99 | 3291 | && xbm_read_bitmap_data (NULL, SDATA (data), |
4ef0d4d0 KS |
3292 | (SDATA (data) |
3293 | + SBYTES (data)), | |
3294 | &w, &h, NULL)); | |
3295 | } | |
3296 | ||
3297 | ||
3298 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
3299 | non-zero if successful. */ | |
3300 | ||
3301 | static int | |
3302 | xbm_load (f, img) | |
3303 | struct frame *f; | |
3304 | struct image *img; | |
3305 | { | |
3306 | int success_p = 0; | |
3307 | Lisp_Object file_name; | |
3308 | ||
3309 | xassert (xbm_image_p (img->spec)); | |
3310 | ||
3311 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
3312 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
3313 | if (STRINGP (file_name)) | |
3314 | { | |
3315 | Lisp_Object file; | |
3316 | unsigned char *contents; | |
3317 | int size; | |
3318 | struct gcpro gcpro1; | |
3319 | ||
3320 | file = x_find_image_file (file_name); | |
3321 | GCPRO1 (file); | |
3322 | if (!STRINGP (file)) | |
3323 | { | |
3324 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
3325 | UNGCPRO; | |
3326 | return 0; | |
3327 | } | |
3328 | ||
3329 | contents = slurp_file (SDATA (file), &size); | |
3330 | if (contents == NULL) | |
3331 | { | |
3332 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
3333 | UNGCPRO; | |
3334 | return 0; | |
3335 | } | |
3336 | ||
3337 | success_p = xbm_load_image (f, img, contents, contents + size); | |
3338 | UNGCPRO; | |
3339 | } | |
3340 | else | |
3341 | { | |
3342 | struct image_keyword fmt[XBM_LAST]; | |
3343 | Lisp_Object data; | |
3344 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
3345 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
3346 | int non_default_colors = 0; | |
3347 | char *bits; | |
3348 | int parsed_p; | |
3349 | int in_memory_file_p = 0; | |
3350 | ||
3351 | /* See if data looks like an in-memory XBM file. */ | |
3352 | data = image_spec_value (img->spec, QCdata, NULL); | |
3353 | in_memory_file_p = xbm_file_p (data); | |
3354 | ||
3355 | /* Parse the image specification. */ | |
3356 | bcopy (xbm_format, fmt, sizeof fmt); | |
3357 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); | |
3358 | xassert (parsed_p); | |
3359 | ||
3360 | /* Get specified width, and height. */ | |
3361 | if (!in_memory_file_p) | |
3362 | { | |
3363 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
3364 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
3365 | xassert (img->width > 0 && img->height > 0); | |
3366 | } | |
3367 | ||
3368 | /* Get foreground and background colors, maybe allocate colors. */ | |
3369 | if (fmt[XBM_FOREGROUND].count | |
3370 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
3371 | { | |
3372 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
3373 | foreground); | |
3374 | non_default_colors = 1; | |
3375 | } | |
3376 | ||
3377 | if (fmt[XBM_BACKGROUND].count | |
3378 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
3379 | { | |
3380 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
3381 | background); | |
3382 | non_default_colors = 1; | |
3383 | } | |
3384 | ||
3385 | if (in_memory_file_p) | |
3386 | success_p = xbm_load_image (f, img, SDATA (data), | |
3387 | (SDATA (data) | |
3388 | + SBYTES (data))); | |
3389 | else | |
3390 | { | |
3391 | if (VECTORP (data)) | |
3392 | { | |
3393 | int i; | |
3394 | char *p; | |
3395 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
3396 | ||
3397 | p = bits = (char *) alloca (nbytes * img->height); | |
3398 | for (i = 0; i < img->height; ++i, p += nbytes) | |
3399 | { | |
3400 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
3401 | if (STRINGP (line)) | |
3402 | bcopy (SDATA (line), p, nbytes); | |
3403 | else | |
3404 | bcopy (XBOOL_VECTOR (line)->data, p, nbytes); | |
3405 | } | |
3406 | } | |
3407 | else if (STRINGP (data)) | |
3408 | bits = SDATA (data); | |
3409 | else | |
3410 | bits = XBOOL_VECTOR (data)->data; | |
3411 | ||
3412 | /* Create the pixmap. */ | |
3413 | ||
3414 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
3415 | foreground, background, | |
3416 | non_default_colors); | |
3417 | if (img->pixmap) | |
3418 | success_p = 1; | |
3419 | else | |
3420 | { | |
3421 | image_error ("Unable to create pixmap for XBM image `%s'", | |
3422 | img->spec, Qnil); | |
3423 | x_clear_image (f, img); | |
3424 | } | |
3425 | } | |
3426 | } | |
3427 | ||
3428 | return success_p; | |
3429 | } | |
3430 | ||
3431 | ||
3432 | \f | |
3433 | /*********************************************************************** | |
3434 | XPM images | |
3435 | ***********************************************************************/ | |
3436 | ||
ea1aaa6f | 3437 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3438 | |
3439 | static int xpm_image_p P_ ((Lisp_Object object)); | |
3440 | static int xpm_load P_ ((struct frame *f, struct image *img)); | |
3441 | static int xpm_valid_color_symbols_p P_ ((Lisp_Object)); | |
3442 | ||
ea1aaa6f ST |
3443 | #endif /* HAVE_XPM || MAC_OS */ |
3444 | ||
3445 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
3446 | #ifdef HAVE_NTGUI |
3447 | /* Indicate to xpm.h that we don't have Xlib. */ | |
3448 | #define FOR_MSW | |
3449 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 3450 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
3451 | #define XColor xpm_XColor |
3452 | #define XImage xpm_XImage | |
279d3293 | 3453 | #define Display xpm_Display |
4ef0d4d0 KS |
3454 | #define PIXEL_ALREADY_TYPEDEFED |
3455 | #include "X11/xpm.h" | |
3456 | #undef FOR_MSW | |
3457 | #undef XColor | |
3458 | #undef XImage | |
279d3293 | 3459 | #undef Display |
4ef0d4d0 KS |
3460 | #undef PIXEL_ALREADY_TYPEDEFED |
3461 | #else | |
3462 | #include "X11/xpm.h" | |
3463 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3464 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3465 | |
ea1aaa6f | 3466 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
3467 | /* The symbol `xpm' identifying XPM-format images. */ |
3468 | ||
3469 | Lisp_Object Qxpm; | |
3470 | ||
3471 | /* Indices of image specification fields in xpm_format, below. */ | |
3472 | ||
3473 | enum xpm_keyword_index | |
3474 | { | |
3475 | XPM_TYPE, | |
3476 | XPM_FILE, | |
3477 | XPM_DATA, | |
3478 | XPM_ASCENT, | |
3479 | XPM_MARGIN, | |
3480 | XPM_RELIEF, | |
3481 | XPM_ALGORITHM, | |
3482 | XPM_HEURISTIC_MASK, | |
3483 | XPM_MASK, | |
3484 | XPM_COLOR_SYMBOLS, | |
3485 | XPM_BACKGROUND, | |
3486 | XPM_LAST | |
3487 | }; | |
3488 | ||
3489 | /* Vector of image_keyword structures describing the format | |
3490 | of valid XPM image specifications. */ | |
3491 | ||
3492 | static struct image_keyword xpm_format[XPM_LAST] = | |
3493 | { | |
3494 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3495 | {":file", IMAGE_STRING_VALUE, 0}, | |
3496 | {":data", IMAGE_STRING_VALUE, 0}, | |
3497 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
3498 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
3499 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
3500 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3501 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3502 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3503 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3504 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3505 | }; | |
3506 | ||
3507 | /* Structure describing the image type XPM. */ | |
3508 | ||
3509 | static struct image_type xpm_type = | |
3510 | { | |
3511 | &Qxpm, | |
3512 | xpm_image_p, | |
3513 | xpm_load, | |
3514 | x_clear_image, | |
3515 | NULL | |
3516 | }; | |
3517 | ||
3518 | #ifdef HAVE_X_WINDOWS | |
3519 | ||
3520 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3521 | functions for allocating image colors. Our own functions handle | |
3522 | color allocation failures more gracefully than the ones on the XPM | |
3523 | lib. */ | |
3524 | ||
3525 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3526 | #define ALLOC_XPM_COLORS | |
3527 | #endif | |
3528 | #endif /* HAVE_X_WINDOWS */ | |
3529 | ||
3530 | #ifdef ALLOC_XPM_COLORS | |
3531 | ||
3532 | static void xpm_init_color_cache P_ ((struct frame *, XpmAttributes *)); | |
3533 | static void xpm_free_color_cache P_ ((void)); | |
3534 | static int xpm_lookup_color P_ ((struct frame *, char *, XColor *)); | |
3535 | static int xpm_color_bucket P_ ((char *)); | |
3536 | static struct xpm_cached_color *xpm_cache_color P_ ((struct frame *, char *, | |
3537 | XColor *, int)); | |
3538 | ||
3539 | /* An entry in a hash table used to cache color definitions of named | |
3540 | colors. This cache is necessary to speed up XPM image loading in | |
3541 | case we do color allocations ourselves. Without it, we would need | |
3542 | a call to XParseColor per pixel in the image. */ | |
3543 | ||
3544 | struct xpm_cached_color | |
3545 | { | |
3546 | /* Next in collision chain. */ | |
3547 | struct xpm_cached_color *next; | |
3548 | ||
3549 | /* Color definition (RGB and pixel color). */ | |
3550 | XColor color; | |
3551 | ||
3552 | /* Color name. */ | |
3553 | char name[1]; | |
3554 | }; | |
3555 | ||
3556 | /* The hash table used for the color cache, and its bucket vector | |
3557 | size. */ | |
3558 | ||
3559 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
3560 | struct xpm_cached_color **xpm_color_cache; | |
3561 | ||
3562 | /* Initialize the color cache. */ | |
3563 | ||
3564 | static void | |
3565 | xpm_init_color_cache (f, attrs) | |
3566 | struct frame *f; | |
3567 | XpmAttributes *attrs; | |
3568 | { | |
3569 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3570 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3571 | memset (xpm_color_cache, 0, nbytes); | |
3572 | init_color_table (); | |
3573 | ||
3574 | if (attrs->valuemask & XpmColorSymbols) | |
3575 | { | |
3576 | int i; | |
3577 | XColor color; | |
3578 | ||
3579 | for (i = 0; i < attrs->numsymbols; ++i) | |
3580 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3581 | attrs->colorsymbols[i].value, &color)) | |
3582 | { | |
3583 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3584 | color.blue); | |
3585 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3586 | } | |
3587 | } | |
3588 | } | |
3589 | ||
3590 | /* Free the color cache. */ | |
3591 | ||
3592 | static void | |
3593 | xpm_free_color_cache () | |
3594 | { | |
3595 | struct xpm_cached_color *p, *next; | |
3596 | int i; | |
3597 | ||
3598 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3599 | for (p = xpm_color_cache[i]; p; p = next) | |
3600 | { | |
3601 | next = p->next; | |
3602 | xfree (p); | |
3603 | } | |
3604 | ||
3605 | xfree (xpm_color_cache); | |
3606 | xpm_color_cache = NULL; | |
3607 | free_color_table (); | |
3608 | } | |
3609 | ||
3610 | /* Return the bucket index for color named COLOR_NAME in the color | |
3611 | cache. */ | |
3612 | ||
3613 | static int | |
3614 | xpm_color_bucket (color_name) | |
3615 | char *color_name; | |
3616 | { | |
3617 | unsigned h = 0; | |
3618 | char *s; | |
3619 | ||
3620 | for (s = color_name; *s; ++s) | |
3621 | h = (h << 2) ^ *s; | |
3622 | return h %= XPM_COLOR_CACHE_BUCKETS; | |
3623 | } | |
3624 | ||
3625 | ||
3626 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3627 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3628 | entry added. */ | |
3629 | ||
3630 | static struct xpm_cached_color * | |
3631 | xpm_cache_color (f, color_name, color, bucket) | |
3632 | struct frame *f; | |
3633 | char *color_name; | |
3634 | XColor *color; | |
3635 | int bucket; | |
3636 | { | |
3637 | size_t nbytes; | |
3638 | struct xpm_cached_color *p; | |
3639 | ||
3640 | if (bucket < 0) | |
3641 | bucket = xpm_color_bucket (color_name); | |
3642 | ||
3643 | nbytes = sizeof *p + strlen (color_name); | |
3644 | p = (struct xpm_cached_color *) xmalloc (nbytes); | |
3645 | strcpy (p->name, color_name); | |
3646 | p->color = *color; | |
3647 | p->next = xpm_color_cache[bucket]; | |
3648 | xpm_color_cache[bucket] = p; | |
3649 | return p; | |
3650 | } | |
3651 | ||
3652 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3653 | return the cached definition in *COLOR. Otherwise, make a new | |
3654 | entry in the cache and allocate the color. Value is zero if color | |
3655 | allocation failed. */ | |
3656 | ||
3657 | static int | |
3658 | xpm_lookup_color (f, color_name, color) | |
3659 | struct frame *f; | |
3660 | char *color_name; | |
3661 | XColor *color; | |
3662 | { | |
3663 | struct xpm_cached_color *p; | |
3664 | int h = xpm_color_bucket (color_name); | |
3665 | ||
3666 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3667 | if (strcmp (p->name, color_name) == 0) | |
3668 | break; | |
3669 | ||
3670 | if (p != NULL) | |
3671 | *color = p->color; | |
3672 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3673 | color_name, color)) | |
3674 | { | |
3675 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3676 | color->blue); | |
3677 | p = xpm_cache_color (f, color_name, color, h); | |
3678 | } | |
3679 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3680 | with transparency, and it's useful. */ | |
3681 | else if (strcmp ("opaque", color_name) == 0) | |
3682 | { | |
3683 | bzero (color, sizeof (XColor)); /* Is this necessary/correct? */ | |
3684 | color->pixel = FRAME_FOREGROUND_PIXEL (f); | |
3685 | p = xpm_cache_color (f, color_name, color, h); | |
3686 | } | |
3687 | ||
3688 | return p != NULL; | |
3689 | } | |
3690 | ||
3691 | ||
3692 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3693 | CLOSURE is a pointer to the frame on which we allocate the | |
3694 | color. Return in *COLOR the allocated color. Value is non-zero | |
3695 | if successful. */ | |
3696 | ||
3697 | static int | |
3698 | xpm_alloc_color (dpy, cmap, color_name, color, closure) | |
3699 | Display *dpy; | |
3700 | Colormap cmap; | |
3701 | char *color_name; | |
3702 | XColor *color; | |
3703 | void *closure; | |
3704 | { | |
3705 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3706 | } | |
3707 | ||
3708 | ||
3709 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3710 | is a pointer to the frame on which we allocate the color. Value is | |
3711 | non-zero if successful. */ | |
3712 | ||
3713 | static int | |
3714 | xpm_free_colors (dpy, cmap, pixels, npixels, closure) | |
3715 | Display *dpy; | |
3716 | Colormap cmap; | |
3717 | Pixel *pixels; | |
3718 | int npixels; | |
3719 | void *closure; | |
3720 | { | |
3721 | return 1; | |
3722 | } | |
3723 | ||
3724 | #endif /* ALLOC_XPM_COLORS */ | |
3725 | ||
3726 | ||
3727 | #ifdef HAVE_NTGUI | |
3728 | ||
3729 | /* XPM library details. */ | |
3730 | ||
3731 | DEF_IMGLIB_FN (XpmFreeAttributes); | |
3732 | DEF_IMGLIB_FN (XpmCreateImageFromBuffer); | |
3733 | DEF_IMGLIB_FN (XpmReadFileToImage); | |
3734 | DEF_IMGLIB_FN (XImageFree); | |
3735 | ||
4ef0d4d0 | 3736 | static int |
0855eb52 | 3737 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3738 | { |
3739 | HMODULE library; | |
3740 | ||
0855eb52 | 3741 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3742 | return 0; |
3743 | ||
3744 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3745 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3746 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3747 | LOAD_IMGLIB_FN (library, XImageFree); | |
3748 | return 1; | |
3749 | } | |
3750 | ||
3751 | #endif /* HAVE_NTGUI */ | |
3752 | ||
3753 | ||
3754 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3755 | for XPM images. Such a list must consist of conses whose car and | |
3756 | cdr are strings. */ | |
3757 | ||
3758 | static int | |
3759 | xpm_valid_color_symbols_p (color_symbols) | |
3760 | Lisp_Object color_symbols; | |
3761 | { | |
3762 | while (CONSP (color_symbols)) | |
3763 | { | |
3764 | Lisp_Object sym = XCAR (color_symbols); | |
3765 | if (!CONSP (sym) | |
3766 | || !STRINGP (XCAR (sym)) | |
3767 | || !STRINGP (XCDR (sym))) | |
3768 | break; | |
3769 | color_symbols = XCDR (color_symbols); | |
3770 | } | |
3771 | ||
3772 | return NILP (color_symbols); | |
3773 | } | |
3774 | ||
3775 | ||
3776 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3777 | ||
3778 | static int | |
3779 | xpm_image_p (object) | |
3780 | Lisp_Object object; | |
3781 | { | |
3782 | struct image_keyword fmt[XPM_LAST]; | |
3783 | bcopy (xpm_format, fmt, sizeof fmt); | |
3784 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) | |
3785 | /* Either `:file' or `:data' must be present. */ | |
3786 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3787 | /* Either no `:color-symbols' or it's a list of conses | |
3788 | whose car and cdr are strings. */ | |
3789 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3790 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3791 | } | |
3792 | ||
ea1aaa6f | 3793 | #endif /* HAVE_XPM || MAC_OS */ |
4ef0d4d0 | 3794 | |
786a43d6 CY |
3795 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
3796 | int | |
3797 | x_create_bitmap_from_xpm_data (f, bits) | |
3798 | struct frame *f; | |
3799 | char **bits; | |
3800 | { | |
3801 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
3802 | int id, rc; | |
3803 | XpmAttributes attrs; | |
3804 | Pixmap bitmap, mask; | |
3805 | ||
3806 | bzero (&attrs, sizeof attrs); | |
3807 | ||
54188d8f CY |
3808 | attrs.visual = FRAME_X_VISUAL (f); |
3809 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3810 | attrs.valuemask |= XpmVisual; | |
3811 | attrs.valuemask |= XpmColormap; | |
3812 | ||
786a43d6 CY |
3813 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
3814 | bits, &bitmap, &mask, &attrs); | |
3815 | if (rc != XpmSuccess) | |
fe45ad15 CY |
3816 | { |
3817 | XpmFreeAttributes (&attrs); | |
3818 | return -1; | |
3819 | } | |
786a43d6 CY |
3820 | |
3821 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3822 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3823 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3824 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3825 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3826 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3827 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3828 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3829 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3830 | ||
3831 | XpmFreeAttributes (&attrs); | |
3832 | return id; | |
3833 | } | |
0d876a14 | 3834 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3835 | |
4ef0d4d0 KS |
3836 | /* Load image IMG which will be displayed on frame F. Value is |
3837 | non-zero if successful. */ | |
3838 | ||
ea1aaa6f ST |
3839 | #ifdef HAVE_XPM |
3840 | ||
4ef0d4d0 KS |
3841 | static int |
3842 | xpm_load (f, img) | |
3843 | struct frame *f; | |
3844 | struct image *img; | |
3845 | { | |
3846 | int rc; | |
3847 | XpmAttributes attrs; | |
3848 | Lisp_Object specified_file, color_symbols; | |
3849 | #ifdef HAVE_NTGUI | |
3850 | HDC hdc; | |
3851 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3852 | #endif /* HAVE_NTGUI */ | |
3853 | ||
3854 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3855 | close colors. Return colors allocated. */ | |
3856 | bzero (&attrs, sizeof attrs); | |
3857 | ||
3858 | #ifndef HAVE_NTGUI | |
3859 | attrs.visual = FRAME_X_VISUAL (f); | |
3860 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3861 | attrs.valuemask |= XpmVisual; | |
3862 | attrs.valuemask |= XpmColormap; | |
3863 | #endif /* HAVE_NTGUI */ | |
3864 | ||
3865 | #ifdef ALLOC_XPM_COLORS | |
3866 | /* Allocate colors with our own functions which handle | |
3867 | failing color allocation more gracefully. */ | |
3868 | attrs.color_closure = f; | |
3869 | attrs.alloc_color = xpm_alloc_color; | |
3870 | attrs.free_colors = xpm_free_colors; | |
3871 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3872 | #else /* not ALLOC_XPM_COLORS */ | |
3873 | /* Let the XPM lib allocate colors. */ | |
3874 | attrs.valuemask |= XpmReturnAllocPixels; | |
3875 | #ifdef XpmAllocCloseColors | |
3876 | attrs.alloc_close_colors = 1; | |
3877 | attrs.valuemask |= XpmAllocCloseColors; | |
3878 | #else /* not XpmAllocCloseColors */ | |
3879 | attrs.closeness = 600; | |
3880 | attrs.valuemask |= XpmCloseness; | |
3881 | #endif /* not XpmAllocCloseColors */ | |
3882 | #endif /* ALLOC_XPM_COLORS */ | |
54188d8f CY |
3883 | #ifdef ALLOC_XPM_COLORS |
3884 | xpm_init_color_cache (f, &attrs); | |
3885 | #endif | |
4ef0d4d0 KS |
3886 | |
3887 | /* If image specification contains symbolic color definitions, add | |
3888 | these to `attrs'. */ | |
3889 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3890 | if (CONSP (color_symbols)) | |
3891 | { | |
3892 | Lisp_Object tail; | |
3893 | XpmColorSymbol *xpm_syms; | |
3894 | int i, size; | |
3895 | ||
3896 | attrs.valuemask |= XpmColorSymbols; | |
3897 | ||
3898 | /* Count number of symbols. */ | |
3899 | attrs.numsymbols = 0; | |
3900 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3901 | ++attrs.numsymbols; | |
3902 | ||
3903 | /* Allocate an XpmColorSymbol array. */ | |
3904 | size = attrs.numsymbols * sizeof *xpm_syms; | |
3905 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
3906 | bzero (xpm_syms, size); | |
3907 | attrs.colorsymbols = xpm_syms; | |
3908 | ||
3909 | /* Fill the color symbol array. */ | |
3910 | for (tail = color_symbols, i = 0; | |
3911 | CONSP (tail); | |
3912 | ++i, tail = XCDR (tail)) | |
3913 | { | |
3914 | Lisp_Object name = XCAR (XCAR (tail)); | |
3915 | Lisp_Object color = XCDR (XCAR (tail)); | |
3916 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
3917 | strcpy (xpm_syms[i].name, SDATA (name)); | |
3918 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
3919 | strcpy (xpm_syms[i].value, SDATA (color)); | |
3920 | } | |
3921 | } | |
3922 | ||
3923 | /* Create a pixmap for the image, either from a file, or from a | |
3924 | string buffer containing data in the same format as an XPM file. */ | |
3925 | #ifdef ALLOC_XPM_COLORS | |
3926 | xpm_init_color_cache (f, &attrs); | |
3927 | #endif | |
3928 | ||
3929 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3930 | ||
3931 | #ifdef HAVE_NTGUI | |
3932 | { | |
3933 | HDC frame_dc = get_frame_dc (f); | |
3934 | hdc = CreateCompatibleDC (frame_dc); | |
3935 | release_frame_dc (f, frame_dc); | |
3936 | } | |
3937 | #endif /* HAVE_NTGUI */ | |
3938 | ||
3939 | if (STRINGP (specified_file)) | |
3940 | { | |
3941 | Lisp_Object file = x_find_image_file (specified_file); | |
3942 | if (!STRINGP (file)) | |
3943 | { | |
3944 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
3945 | return 0; | |
3946 | } | |
3947 | ||
3948 | #ifdef HAVE_NTGUI | |
3949 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3950 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3951 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3952 | &xpm_image, &xpm_mask, | |
3953 | &attrs); | |
3954 | #else | |
3955 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
3956 | SDATA (file), &img->pixmap, &img->mask, | |
3957 | &attrs); | |
3958 | #endif /* HAVE_NTGUI */ | |
3959 | } | |
3960 | else | |
3961 | { | |
3962 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
3963 | #ifdef HAVE_NTGUI | |
3964 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3965 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3966 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3967 | &xpm_image, &xpm_mask, | |
3968 | &attrs); | |
3969 | #else | |
3970 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
3971 | SDATA (buffer), | |
3972 | &img->pixmap, &img->mask, | |
3973 | &attrs); | |
3974 | #endif /* HAVE_NTGUI */ | |
3975 | } | |
3976 | ||
3977 | if (rc == XpmSuccess) | |
3978 | { | |
3979 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3980 | img->colors = colors_in_color_table (&img->ncolors); | |
3981 | #else /* not ALLOC_XPM_COLORS */ | |
3982 | int i; | |
3983 | ||
3984 | #ifdef HAVE_NTGUI | |
3985 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3986 | plus some duplicate attributes. */ | |
3987 | if (xpm_image && xpm_image->bitmap) | |
3988 | { | |
3989 | img->pixmap = xpm_image->bitmap; | |
3990 | /* XImageFree in libXpm frees XImage struct without destroying | |
3991 | the bitmap, which is what we want. */ | |
3992 | fn_XImageFree (xpm_image); | |
3993 | } | |
3994 | if (xpm_mask && xpm_mask->bitmap) | |
3995 | { | |
3996 | /* The mask appears to be inverted compared with what we expect. | |
3997 | TODO: invert our expectations. See other places where we | |
3998 | have to invert bits because our idea of masks is backwards. */ | |
3999 | HGDIOBJ old_obj; | |
4000 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
4001 | ||
4002 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
4003 | SelectObject (hdc, old_obj); | |
4004 | ||
4005 | img->mask = xpm_mask->bitmap; | |
4006 | fn_XImageFree (xpm_mask); | |
4007 | DeleteDC (hdc); | |
4008 | } | |
4009 | ||
4010 | DeleteDC (hdc); | |
4011 | #endif /* HAVE_NTGUI */ | |
4012 | ||
4013 | /* Remember allocated colors. */ | |
4014 | img->ncolors = attrs.nalloc_pixels; | |
4015 | img->colors = (unsigned long *) xmalloc (img->ncolors | |
4016 | * sizeof *img->colors); | |
4017 | for (i = 0; i < attrs.nalloc_pixels; ++i) | |
4018 | { | |
4019 | img->colors[i] = attrs.alloc_pixels[i]; | |
4020 | #ifdef DEBUG_X_COLORS | |
4021 | register_color (img->colors[i]); | |
4022 | #endif | |
4023 | } | |
4024 | #endif /* not ALLOC_XPM_COLORS */ | |
4025 | ||
4026 | img->width = attrs.width; | |
4027 | img->height = attrs.height; | |
4028 | xassert (img->width > 0 && img->height > 0); | |
4029 | ||
4030 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
4031 | #ifdef HAVE_NTGUI | |
4032 | fn_XpmFreeAttributes (&attrs); | |
4033 | #else | |
4034 | XpmFreeAttributes (&attrs); | |
4035 | #endif /* HAVE_NTGUI */ | |
4036 | } | |
4037 | else | |
4038 | { | |
4039 | #ifdef HAVE_NTGUI | |
4040 | DeleteDC (hdc); | |
4041 | #endif /* HAVE_NTGUI */ | |
4042 | ||
4043 | switch (rc) | |
4044 | { | |
4045 | case XpmOpenFailed: | |
4046 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
4047 | break; | |
4048 | ||
4049 | case XpmFileInvalid: | |
4050 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4051 | break; | |
4052 | ||
4053 | case XpmNoMemory: | |
4054 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4055 | break; | |
4056 | ||
4057 | case XpmColorFailed: | |
4058 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
4059 | break; | |
4060 | ||
4061 | default: | |
4062 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
4063 | break; | |
4064 | } | |
4065 | } | |
4066 | ||
4067 | #ifdef ALLOC_XPM_COLORS | |
4068 | xpm_free_color_cache (); | |
4069 | #endif | |
4070 | return rc == XpmSuccess; | |
4071 | } | |
4072 | ||
4073 | #endif /* HAVE_XPM */ | |
4074 | ||
ea1aaa6f ST |
4075 | #ifdef MAC_OS |
4076 | ||
4077 | /* XPM support functions for Mac OS where libxpm is not available. | |
4078 | Only XPM version 3 (without any extensions) is supported. */ | |
4079 | ||
4080 | static int xpm_scan P_ ((unsigned char **, unsigned char *, | |
9ecf6403 | 4081 | unsigned char **, int *)); |
ea1aaa6f ST |
4082 | static Lisp_Object xpm_make_color_table_v |
4083 | P_ ((void (**) (Lisp_Object, unsigned char *, int, Lisp_Object), | |
4084 | Lisp_Object (**) (Lisp_Object, unsigned char *, int))); | |
4085 | static void xpm_put_color_table_v P_ ((Lisp_Object, unsigned char *, | |
9ecf6403 | 4086 | int, Lisp_Object)); |
ea1aaa6f | 4087 | static Lisp_Object xpm_get_color_table_v P_ ((Lisp_Object, |
9ecf6403 | 4088 | unsigned char *, int)); |
ea1aaa6f ST |
4089 | static Lisp_Object xpm_make_color_table_h |
4090 | P_ ((void (**) (Lisp_Object, unsigned char *, int, Lisp_Object), | |
4091 | Lisp_Object (**) (Lisp_Object, unsigned char *, int))); | |
4092 | static void xpm_put_color_table_h P_ ((Lisp_Object, unsigned char *, | |
9ecf6403 | 4093 | int, Lisp_Object)); |
ea1aaa6f | 4094 | static Lisp_Object xpm_get_color_table_h P_ ((Lisp_Object, |
9ecf6403 | 4095 | unsigned char *, int)); |
ea1aaa6f ST |
4096 | static int xpm_str_to_color_key P_ ((char *)); |
4097 | static int xpm_load_image P_ ((struct frame *, struct image *, | |
9ecf6403 | 4098 | unsigned char *, unsigned char *)); |
ea1aaa6f ST |
4099 | |
4100 | /* Tokens returned from xpm_scan. */ | |
4101 | ||
4102 | enum xpm_token | |
4103 | { | |
4104 | XPM_TK_IDENT = 256, | |
4105 | XPM_TK_STRING, | |
4106 | XPM_TK_EOF | |
4107 | }; | |
4108 | ||
4109 | /* Scan an XPM data and return a character (< 256) or a token defined | |
4110 | by enum xpm_token above. *S and END are the start (inclusive) and | |
4111 | the end (exclusive) addresses of the data, respectively. Advance | |
4112 | *S while scanning. If token is either XPM_TK_IDENT or | |
4113 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
4114 | length of the corresponding token, respectively. */ | |
4115 | ||
4116 | static int | |
4117 | xpm_scan (s, end, beg, len) | |
4118 | unsigned char **s, *end, **beg; | |
4119 | int *len; | |
4120 | { | |
4121 | int c; | |
4122 | ||
4123 | while (*s < end) | |
4124 | { | |
4125 | /* Skip white-space. */ | |
4126 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 4127 | ; |
ea1aaa6f ST |
4128 | |
4129 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 4130 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 4131 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
4132 | { |
4133 | *beg = *s - 1; | |
4134 | while (*s < end && | |
4135 | (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
4136 | ++*s; | |
4137 | *len = *s - *beg; | |
4138 | return XPM_TK_IDENT; | |
4139 | } | |
ea1aaa6f | 4140 | else if (c == '"') |
9ecf6403 YM |
4141 | { |
4142 | *beg = *s; | |
4143 | while (*s < end && **s != '"') | |
4144 | ++*s; | |
4145 | *len = *s - *beg; | |
4146 | if (*s < end) | |
4147 | ++*s; | |
4148 | return XPM_TK_STRING; | |
4149 | } | |
ea1aaa6f | 4150 | else if (c == '/') |
9ecf6403 YM |
4151 | { |
4152 | if (*s < end && **s == '*') | |
4153 | { | |
4154 | /* C-style comment. */ | |
4155 | ++*s; | |
4156 | do | |
4157 | { | |
4158 | while (*s < end && *(*s)++ != '*') | |
4159 | ; | |
4160 | } | |
4161 | while (*s < end && **s != '/'); | |
4162 | if (*s < end) | |
4163 | ++*s; | |
4164 | } | |
4165 | else | |
4166 | return c; | |
4167 | } | |
ea1aaa6f | 4168 | else |
9ecf6403 | 4169 | return c; |
ea1aaa6f ST |
4170 | } |
4171 | ||
4172 | return XPM_TK_EOF; | |
4173 | } | |
4174 | ||
4175 | /* Functions for color table lookup in XPM data. A Key is a string | |
4176 | specifying the color of each pixel in XPM data. A value is either | |
4177 | an integer that specifies a pixel color, Qt that specifies | |
4178 | transparency, or Qnil for the unspecified color. If the length of | |
4179 | the key string is one, a vector is used as a table. Otherwise, a | |
4180 | hash table is used. */ | |
4181 | ||
4182 | static Lisp_Object | |
4183 | xpm_make_color_table_v (put_func, get_func) | |
4184 | void (**put_func) (Lisp_Object, unsigned char *, int, Lisp_Object); | |
4185 | Lisp_Object (**get_func) (Lisp_Object, unsigned char *, int); | |
4186 | { | |
4187 | *put_func = xpm_put_color_table_v; | |
4188 | *get_func = xpm_get_color_table_v; | |
4189 | return Fmake_vector (make_number (256), Qnil); | |
4190 | } | |
4191 | ||
4192 | static void | |
4193 | xpm_put_color_table_v (color_table, chars_start, chars_len, color) | |
4194 | Lisp_Object color_table; | |
4195 | unsigned char *chars_start; | |
4196 | int chars_len; | |
4197 | Lisp_Object color; | |
4198 | { | |
4199 | XVECTOR (color_table)->contents[*chars_start] = color; | |
4200 | } | |
4201 | ||
4202 | static Lisp_Object | |
4203 | xpm_get_color_table_v (color_table, chars_start, chars_len) | |
4204 | Lisp_Object color_table; | |
4205 | unsigned char *chars_start; | |
4206 | int chars_len; | |
4207 | { | |
4208 | return XVECTOR (color_table)->contents[*chars_start]; | |
4209 | } | |
4210 | ||
4211 | static Lisp_Object | |
4212 | xpm_make_color_table_h (put_func, get_func) | |
4213 | void (**put_func) (Lisp_Object, unsigned char *, int, Lisp_Object); | |
4214 | Lisp_Object (**get_func) (Lisp_Object, unsigned char *, int); | |
4215 | { | |
4216 | *put_func = xpm_put_color_table_h; | |
4217 | *get_func = xpm_get_color_table_h; | |
4218 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
4219 | make_float (DEFAULT_REHASH_SIZE), |
4220 | make_float (DEFAULT_REHASH_THRESHOLD), | |
4221 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
4222 | } |
4223 | ||
4224 | static void | |
4225 | xpm_put_color_table_h (color_table, chars_start, chars_len, color) | |
4226 | Lisp_Object color_table; | |
4227 | unsigned char *chars_start; | |
4228 | int chars_len; | |
4229 | Lisp_Object color; | |
4230 | { | |
4231 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4232 | unsigned hash_code; | |
4233 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); | |
4234 | ||
4235 | hash_lookup (table, chars, &hash_code); | |
4236 | hash_put (table, chars, color, hash_code); | |
4237 | } | |
4238 | ||
4239 | static Lisp_Object | |
4240 | xpm_get_color_table_h (color_table, chars_start, chars_len) | |
4241 | Lisp_Object color_table; | |
4242 | unsigned char *chars_start; | |
4243 | int chars_len; | |
4244 | { | |
4245 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
4246 | int i = hash_lookup (table, make_unibyte_string (chars_start, chars_len), | |
9ecf6403 | 4247 | NULL); |
ea1aaa6f ST |
4248 | |
4249 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
4250 | } | |
4251 | ||
4252 | enum xpm_color_key { | |
4253 | XPM_COLOR_KEY_S, | |
4254 | XPM_COLOR_KEY_M, | |
4255 | XPM_COLOR_KEY_G4, | |
4256 | XPM_COLOR_KEY_G, | |
4257 | XPM_COLOR_KEY_C | |
4258 | }; | |
4259 | ||
4260 | static char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; | |
4261 | ||
4262 | static int | |
4263 | xpm_str_to_color_key (s) | |
4264 | char *s; | |
4265 | { | |
4266 | int i; | |
4267 | ||
4268 | for (i = 0; | |
4269 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
4270 | i++) | |
4271 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
4272 | return i; | |
4273 | return -1; | |
4274 | } | |
4275 | ||
4276 | static int | |
4277 | xpm_load_image (f, img, contents, end) | |
4278 | struct frame *f; | |
4279 | struct image *img; | |
4280 | unsigned char *contents, *end; | |
4281 | { | |
4282 | unsigned char *s = contents, *beg, *str; | |
4283 | unsigned char buffer[BUFSIZ]; | |
4284 | int width, height, x, y; | |
4285 | int num_colors, chars_per_pixel; | |
4286 | int len, LA1; | |
4287 | void (*put_color_table) (Lisp_Object, unsigned char *, int, Lisp_Object); | |
4288 | Lisp_Object (*get_color_table) (Lisp_Object, unsigned char *, int); | |
4289 | Lisp_Object frame, color_symbols, color_table; | |
4290 | int best_key, have_mask = 0; | |
4291 | XImagePtr ximg = NULL, mask_img = NULL; | |
4292 | ||
4293 | #define match() \ | |
4294 | LA1 = xpm_scan (&s, end, &beg, &len) | |
4295 | ||
9ecf6403 YM |
4296 | #define expect(TOKEN) \ |
4297 | if (LA1 != (TOKEN)) \ | |
4298 | goto failure; \ | |
4299 | else \ | |
ea1aaa6f ST |
4300 | match () |
4301 | ||
9ecf6403 | 4302 | #define expect_ident(IDENT) \ |
ea1aaa6f | 4303 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
4304 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
4305 | match (); \ | |
4306 | else \ | |
ea1aaa6f ST |
4307 | goto failure |
4308 | ||
4309 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
4310 | goto failure; | |
4311 | s += 9; | |
4312 | match(); | |
4313 | expect_ident ("static"); | |
4314 | expect_ident ("char"); | |
4315 | expect ('*'); | |
4316 | expect (XPM_TK_IDENT); | |
4317 | expect ('['); | |
4318 | expect (']'); | |
4319 | expect ('='); | |
4320 | expect ('{'); | |
4321 | expect (XPM_TK_STRING); | |
4322 | if (len >= BUFSIZ) | |
4323 | goto failure; | |
4324 | memcpy (buffer, beg, len); | |
4325 | buffer[len] = '\0'; | |
4326 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 4327 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
4328 | || width <= 0 || height <= 0 |
4329 | || num_colors <= 0 || chars_per_pixel <= 0) | |
4330 | goto failure; | |
de297941 YM |
4331 | |
4332 | if (!check_image_size (f, width, height)) | |
4333 | { | |
4334 | image_error ("Invalid image size", Qnil, Qnil); | |
4335 | goto failure; | |
4336 | } | |
4337 | ||
ea1aaa6f ST |
4338 | expect (','); |
4339 | ||
4340 | XSETFRAME (frame, f); | |
4341 | if (!NILP (Fxw_display_color_p (frame))) | |
4342 | best_key = XPM_COLOR_KEY_C; | |
4343 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
4344 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 4345 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
4346 | else |
4347 | best_key = XPM_COLOR_KEY_M; | |
4348 | ||
4349 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
4350 | if (chars_per_pixel == 1) | |
4351 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 4352 | &get_color_table); |
ea1aaa6f ST |
4353 | else |
4354 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 4355 | &get_color_table); |
ea1aaa6f ST |
4356 | |
4357 | while (num_colors-- > 0) | |
4358 | { | |
4359 | unsigned char *color, *max_color; | |
4360 | int key, next_key, max_key = 0; | |
4361 | Lisp_Object symbol_color = Qnil, color_val; | |
4362 | XColor cdef; | |
4363 | ||
4364 | expect (XPM_TK_STRING); | |
4365 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 4366 | goto failure; |
ea1aaa6f ST |
4367 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
4368 | buffer[len - chars_per_pixel] = '\0'; | |
4369 | ||
4370 | str = strtok (buffer, " \t"); | |
4371 | if (str == NULL) | |
9ecf6403 | 4372 | goto failure; |
ea1aaa6f ST |
4373 | key = xpm_str_to_color_key (str); |
4374 | if (key < 0) | |
9ecf6403 | 4375 | goto failure; |
ea1aaa6f | 4376 | do |
9ecf6403 YM |
4377 | { |
4378 | color = strtok (NULL, " \t"); | |
4379 | if (color == NULL) | |
4380 | goto failure; | |
ea1aaa6f | 4381 | |
9db94f82 | 4382 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
4383 | { |
4384 | next_key = xpm_str_to_color_key (str); | |
4385 | if (next_key >= 0) | |
4386 | break; | |
4387 | color[strlen (color)] = ' '; | |
4388 | } | |
ea1aaa6f | 4389 | |
9ecf6403 YM |
4390 | if (key == XPM_COLOR_KEY_S) |
4391 | { | |
4392 | if (NILP (symbol_color)) | |
4393 | symbol_color = build_string (color); | |
4394 | } | |
4395 | else if (max_key < key && key <= best_key) | |
4396 | { | |
4397 | max_key = key; | |
4398 | max_color = color; | |
4399 | } | |
4400 | key = next_key; | |
4401 | } | |
ea1aaa6f ST |
4402 | while (str); |
4403 | ||
4404 | color_val = Qnil; | |
4405 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
4406 | { |
4407 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
4408 | ||
4409 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 YM |
4410 | { |
4411 | if (xstricmp (SDATA (XCDR (specified_color)), "None") == 0) | |
4412 | color_val = Qt; | |
4413 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
4414 | &cdef, 0)) | |
4415 | color_val = make_number (cdef.pixel); | |
4416 | } | |
9ecf6403 | 4417 | } |
ea1aaa6f | 4418 | if (NILP (color_val) && max_key > 0) |
9db94f82 YM |
4419 | { |
4420 | if (xstricmp (max_color, "None") == 0) | |
4421 | color_val = Qt; | |
4422 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
4423 | color_val = make_number (cdef.pixel); | |
4424 | } | |
ea1aaa6f | 4425 | if (!NILP (color_val)) |
9ecf6403 | 4426 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
4427 | |
4428 | expect (','); | |
4429 | } | |
4430 | ||
4431 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
9ecf6403 | 4432 | &ximg, &img->pixmap) |
ea1aaa6f | 4433 | || !x_create_x_image_and_pixmap (f, width, height, 1, |
9ecf6403 | 4434 | &mask_img, &img->mask)) |
ea1aaa6f ST |
4435 | { |
4436 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
4437 | goto error; | |
4438 | } | |
4439 | ||
4440 | for (y = 0; y < height; y++) | |
4441 | { | |
4442 | expect (XPM_TK_STRING); | |
4443 | str = beg; | |
4444 | if (len < width * chars_per_pixel) | |
9ecf6403 | 4445 | goto failure; |
ea1aaa6f | 4446 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
4447 | { |
4448 | Lisp_Object color_val = | |
4449 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4450 | ||
4451 | XPutPixel (ximg, x, y, | |
4452 | (INTEGERP (color_val) ? XINT (color_val) | |
4453 | : FRAME_FOREGROUND_PIXEL (f))); | |
4454 | XPutPixel (mask_img, x, y, | |
4455 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
4456 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
4457 | } | |
ea1aaa6f | 4458 | if (y + 1 < height) |
9ecf6403 | 4459 | expect (','); |
ea1aaa6f ST |
4460 | } |
4461 | ||
4462 | img->width = width; | |
4463 | img->height = height; | |
4464 | ||
4465 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
4466 | x_destroy_x_image (ximg); | |
4467 | if (have_mask) | |
4468 | { | |
9ecf6403 YM |
4469 | /* Fill in the background_transparent field while we have the |
4470 | mask handy. */ | |
4471 | image_background_transparent (img, f, mask_img); | |
4472 | ||
ea1aaa6f ST |
4473 | x_put_x_image (f, mask_img, img->mask, width, height); |
4474 | x_destroy_x_image (mask_img); | |
4475 | } | |
4476 | else | |
4477 | { | |
4478 | x_destroy_x_image (mask_img); | |
4479 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4480 | img->mask = NO_PIXMAP; | |
4481 | } | |
4482 | ||
4483 | return 1; | |
4484 | ||
4485 | failure: | |
4486 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4487 | error: | |
4488 | x_destroy_x_image (ximg); | |
4489 | x_destroy_x_image (mask_img); | |
4490 | x_clear_image (f, img); | |
4491 | return 0; | |
4492 | ||
4493 | #undef match | |
4494 | #undef expect | |
4495 | #undef expect_ident | |
4496 | } | |
4497 | ||
4498 | static int | |
4499 | xpm_load (f, img) | |
4500 | struct frame *f; | |
4501 | struct image *img; | |
4502 | { | |
4503 | int success_p = 0; | |
4504 | Lisp_Object file_name; | |
4505 | ||
4506 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4507 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4508 | if (STRINGP (file_name)) | |
4509 | { | |
4510 | Lisp_Object file; | |
4511 | unsigned char *contents; | |
4512 | int size; | |
4513 | struct gcpro gcpro1; | |
4514 | ||
4515 | file = x_find_image_file (file_name); | |
4516 | GCPRO1 (file); | |
4517 | if (!STRINGP (file)) | |
9ecf6403 YM |
4518 | { |
4519 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4520 | UNGCPRO; | |
4521 | return 0; | |
4522 | } | |
ea1aaa6f ST |
4523 | |
4524 | contents = slurp_file (SDATA (file), &size); | |
4525 | if (contents == NULL) | |
9ecf6403 YM |
4526 | { |
4527 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
4528 | UNGCPRO; | |
4529 | return 0; | |
4530 | } | |
ea1aaa6f ST |
4531 | |
4532 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4533 | xfree (contents); | |
4534 | UNGCPRO; | |
4535 | } | |
4536 | else | |
4537 | { | |
4538 | Lisp_Object data; | |
4539 | ||
4540 | data = image_spec_value (img->spec, QCdata, NULL); | |
4541 | success_p = xpm_load_image (f, img, SDATA (data), | |
9ecf6403 | 4542 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4543 | } |
4544 | ||
4545 | return success_p; | |
4546 | } | |
4547 | ||
4548 | #endif /* MAC_OS */ | |
b0da69a7 | 4549 | |
ea1aaa6f | 4550 | |
4ef0d4d0 KS |
4551 | \f |
4552 | /*********************************************************************** | |
4553 | Color table | |
4554 | ***********************************************************************/ | |
4555 | ||
4556 | #ifdef COLOR_TABLE_SUPPORT | |
4557 | ||
4558 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4559 | ||
4560 | struct ct_color | |
4561 | { | |
4562 | int r, g, b; | |
4563 | unsigned long pixel; | |
4564 | ||
4565 | /* Next in color table collision list. */ | |
4566 | struct ct_color *next; | |
4567 | }; | |
4568 | ||
4569 | /* The bucket vector size to use. Must be prime. */ | |
4570 | ||
4571 | #define CT_SIZE 101 | |
4572 | ||
4573 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4574 | ||
4575 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4576 | ||
4577 | /* The color hash table. */ | |
4578 | ||
4579 | struct ct_color **ct_table; | |
4580 | ||
4581 | /* Number of entries in the color table. */ | |
4582 | ||
4583 | int ct_colors_allocated; | |
4584 | ||
4585 | /* Initialize the color table. */ | |
4586 | ||
4587 | static void | |
4588 | init_color_table () | |
4589 | { | |
4590 | int size = CT_SIZE * sizeof (*ct_table); | |
4591 | ct_table = (struct ct_color **) xmalloc (size); | |
4592 | bzero (ct_table, size); | |
4593 | ct_colors_allocated = 0; | |
4594 | } | |
4595 | ||
4596 | ||
4597 | /* Free memory associated with the color table. */ | |
4598 | ||
4599 | static void | |
4600 | free_color_table () | |
4601 | { | |
4602 | int i; | |
4603 | struct ct_color *p, *next; | |
4604 | ||
4605 | for (i = 0; i < CT_SIZE; ++i) | |
4606 | for (p = ct_table[i]; p; p = next) | |
4607 | { | |
4608 | next = p->next; | |
4609 | xfree (p); | |
4610 | } | |
4611 | ||
4612 | xfree (ct_table); | |
4613 | ct_table = NULL; | |
4614 | } | |
4615 | ||
4616 | ||
4617 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4618 | entry for that color already is in the color table, return the | |
4619 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4620 | G, B, and make an entry in the color table. */ | |
4621 | ||
4622 | static unsigned long | |
4623 | lookup_rgb_color (f, r, g, b) | |
4624 | struct frame *f; | |
4625 | int r, g, b; | |
4626 | { | |
4627 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4628 | int i = hash % CT_SIZE; | |
4629 | struct ct_color *p; | |
4630 | Display_Info *dpyinfo; | |
4631 | ||
4632 | /* Handle TrueColor visuals specially, which improves performance by | |
4633 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4634 | a nop, and pixel colors specify RGB values directly. See also | |
4635 | the Xlib spec, chapter 3.1. */ | |
4636 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4637 | if (dpyinfo->red_bits > 0) | |
4638 | { | |
4639 | unsigned long pr, pg, pb; | |
4640 | ||
4641 | /* Apply gamma-correction like normal color allocation does. */ | |
4642 | if (f->gamma) | |
4643 | { | |
4644 | XColor color; | |
4645 | color.red = r, color.green = g, color.blue = b; | |
4646 | gamma_correct (f, &color); | |
4647 | r = color.red, g = color.green, b = color.blue; | |
4648 | } | |
4649 | ||
4650 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4651 | them to the right position in the pixel color. Note that the | |
4652 | original RGB values are 16-bit values, as usual in X. */ | |
4653 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4654 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4655 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4656 | ||
4657 | /* Assemble the pixel color. */ | |
4658 | return pr | pg | pb; | |
4659 | } | |
1f026899 | 4660 | |
4ef0d4d0 KS |
4661 | for (p = ct_table[i]; p; p = p->next) |
4662 | if (p->r == r && p->g == g && p->b == b) | |
4663 | break; | |
4664 | ||
4665 | if (p == NULL) | |
4666 | { | |
4667 | ||
4668 | #ifdef HAVE_X_WINDOWS | |
4669 | XColor color; | |
4670 | Colormap cmap; | |
4671 | int rc; | |
4672 | ||
4673 | color.red = r; | |
4674 | color.green = g; | |
4675 | color.blue = b; | |
4676 | ||
4677 | cmap = FRAME_X_COLORMAP (f); | |
4678 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4679 | if (rc) | |
4680 | { | |
4681 | ++ct_colors_allocated; | |
4682 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4683 | p->r = r; | |
4684 | p->g = g; | |
4685 | p->b = b; | |
4686 | p->pixel = color.pixel; | |
4687 | p->next = ct_table[i]; | |
4688 | ct_table[i] = p; | |
4689 | } | |
4690 | else | |
4691 | return FRAME_FOREGROUND_PIXEL (f); | |
4692 | ||
4693 | #else | |
4694 | COLORREF color; | |
4695 | #ifdef HAVE_NTGUI | |
4696 | color = PALETTERGB (r, g, b); | |
4697 | #else | |
4698 | color = RGB_TO_ULONG (r, g, b); | |
4699 | #endif /* HAVE_NTGUI */ | |
4700 | ++ct_colors_allocated; | |
4701 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4702 | p->r = r; | |
4703 | p->g = g; | |
4704 | p->b = b; | |
4705 | p->pixel = color; | |
4706 | p->next = ct_table[i]; | |
4707 | ct_table[i] = p; | |
4708 | #endif /* HAVE_X_WINDOWS */ | |
4709 | ||
4710 | } | |
4711 | ||
4712 | return p->pixel; | |
4713 | } | |
4714 | ||
4715 | ||
4716 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4717 | table. If not already present, allocate it. Value is PIXEL. */ | |
4718 | ||
4719 | static unsigned long | |
4720 | lookup_pixel_color (f, pixel) | |
4721 | struct frame *f; | |
4722 | unsigned long pixel; | |
4723 | { | |
4724 | int i = pixel % CT_SIZE; | |
4725 | struct ct_color *p; | |
4726 | ||
4727 | for (p = ct_table[i]; p; p = p->next) | |
4728 | if (p->pixel == pixel) | |
4729 | break; | |
4730 | ||
4731 | if (p == NULL) | |
4732 | { | |
4733 | XColor color; | |
4734 | Colormap cmap; | |
4735 | int rc; | |
4736 | ||
4737 | #ifdef HAVE_X_WINDOWS | |
4738 | cmap = FRAME_X_COLORMAP (f); | |
4739 | color.pixel = pixel; | |
4740 | x_query_color (f, &color); | |
4741 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4742 | #else | |
4743 | BLOCK_INPUT; | |
4744 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4745 | color.pixel = pixel; | |
4746 | XQueryColor (NULL, cmap, &color); | |
4747 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4748 | UNBLOCK_INPUT; | |
4749 | #endif /* HAVE_X_WINDOWS */ | |
4750 | ||
4751 | if (rc) | |
4752 | { | |
4753 | ++ct_colors_allocated; | |
4754 | ||
4755 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4756 | p->r = color.red; | |
4757 | p->g = color.green; | |
4758 | p->b = color.blue; | |
4759 | p->pixel = pixel; | |
4760 | p->next = ct_table[i]; | |
4761 | ct_table[i] = p; | |
4762 | } | |
4763 | else | |
4764 | return FRAME_FOREGROUND_PIXEL (f); | |
4765 | } | |
4766 | return p->pixel; | |
4767 | } | |
4768 | ||
4769 | ||
4770 | /* Value is a vector of all pixel colors contained in the color table, | |
4771 | allocated via xmalloc. Set *N to the number of colors. */ | |
4772 | ||
4773 | static unsigned long * | |
4774 | colors_in_color_table (n) | |
4775 | int *n; | |
4776 | { | |
4777 | int i, j; | |
4778 | struct ct_color *p; | |
4779 | unsigned long *colors; | |
4780 | ||
4781 | if (ct_colors_allocated == 0) | |
4782 | { | |
4783 | *n = 0; | |
4784 | colors = NULL; | |
4785 | } | |
4786 | else | |
4787 | { | |
4788 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4789 | * sizeof *colors); | |
4790 | *n = ct_colors_allocated; | |
4791 | ||
4792 | for (i = j = 0; i < CT_SIZE; ++i) | |
4793 | for (p = ct_table[i]; p; p = p->next) | |
4794 | colors[j++] = p->pixel; | |
4795 | } | |
4796 | ||
4797 | return colors; | |
4798 | } | |
4799 | ||
4800 | #else /* COLOR_TABLE_SUPPORT */ | |
4801 | ||
4802 | static unsigned long | |
4803 | lookup_rgb_color (f, r, g, b) | |
4804 | struct frame *f; | |
4805 | int r, g, b; | |
4806 | { | |
4807 | unsigned long pixel; | |
4808 | ||
4809 | #ifdef MAC_OS | |
4810 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4811 | gamma_correct (f, &pixel); | |
4812 | #endif /* MAC_OS */ | |
4813 | ||
4814 | #ifdef HAVE_NTGUI | |
4815 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4816 | #endif /* HAVE_NTGUI */ | |
4817 | ||
4818 | return pixel; | |
4819 | } | |
4820 | ||
4821 | static void | |
4822 | init_color_table () | |
4823 | { | |
4824 | } | |
4825 | #endif /* COLOR_TABLE_SUPPORT */ | |
4826 | ||
4827 | \f | |
4828 | /*********************************************************************** | |
4829 | Algorithms | |
4830 | ***********************************************************************/ | |
4831 | ||
4832 | static XColor *x_to_xcolors P_ ((struct frame *, struct image *, int)); | |
4833 | static void x_from_xcolors P_ ((struct frame *, struct image *, XColor *)); | |
4834 | static void x_detect_edges P_ ((struct frame *, struct image *, int[9], int)); | |
4835 | ||
4836 | #ifdef HAVE_NTGUI | |
4837 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4838 | #endif /* HAVE_NTGUI */ | |
4839 | ||
4840 | /* Non-zero means draw a cross on images having `:conversion | |
4841 | disabled'. */ | |
4842 | ||
4843 | int cross_disabled_images; | |
4844 | ||
4845 | /* Edge detection matrices for different edge-detection | |
4846 | strategies. */ | |
4847 | ||
4848 | static int emboss_matrix[9] = { | |
4849 | /* x - 1 x x + 1 */ | |
4850 | 2, -1, 0, /* y - 1 */ | |
4851 | -1, 0, 1, /* y */ | |
4852 | 0, 1, -2 /* y + 1 */ | |
4853 | }; | |
4854 | ||
4855 | static int laplace_matrix[9] = { | |
4856 | /* x - 1 x x + 1 */ | |
4857 | 1, 0, 0, /* y - 1 */ | |
4858 | 0, 0, 0, /* y */ | |
4859 | 0, 0, -1 /* y + 1 */ | |
4860 | }; | |
4861 | ||
4862 | /* Value is the intensity of the color whose red/green/blue values | |
4863 | are R, G, and B. */ | |
4864 | ||
4865 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4866 | ||
4867 | ||
4868 | /* On frame F, return an array of XColor structures describing image | |
4869 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4870 | non-zero means also fill the red/green/blue members of the XColor | |
4871 | structures. Value is a pointer to the array of XColors structures, | |
4872 | allocated with xmalloc; it must be freed by the caller. */ | |
4873 | ||
4874 | static XColor * | |
4875 | x_to_xcolors (f, img, rgb_p) | |
4876 | struct frame *f; | |
4877 | struct image *img; | |
4878 | int rgb_p; | |
4879 | { | |
4880 | int x, y; | |
4881 | XColor *colors, *p; | |
4882 | XImagePtr_or_DC ximg; | |
4883 | #ifdef HAVE_NTGUI | |
4884 | HDC hdc; | |
4885 | HGDIOBJ prev; | |
4886 | #endif /* HAVE_NTGUI */ | |
4887 | ||
4888 | colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors); | |
4889 | ||
4890 | #ifndef HAVE_NTGUI | |
4891 | /* Get the X image IMG->pixmap. */ | |
4892 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4893 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4894 | #else | |
4895 | /* Load the image into a memory device context. */ | |
4896 | hdc = get_frame_dc (f); | |
4897 | ximg = CreateCompatibleDC (hdc); | |
4898 | release_frame_dc (f, hdc); | |
4899 | prev = SelectObject (ximg, img->pixmap); | |
4900 | #endif /* HAVE_NTGUI */ | |
4901 | ||
4902 | /* Fill the `pixel' members of the XColor array. I wished there | |
4903 | were an easy and portable way to circumvent XGetPixel. */ | |
4904 | p = colors; | |
4905 | for (y = 0; y < img->height; ++y) | |
4906 | { | |
4907 | XColor *row = p; | |
4908 | ||
4909 | #ifdef HAVE_X_WINDOWS | |
4910 | for (x = 0; x < img->width; ++x, ++p) | |
4911 | p->pixel = XGetPixel (ximg, x, y); | |
4912 | if (rgb_p) | |
4913 | x_query_colors (f, row, img->width); | |
4914 | ||
4915 | #else | |
4916 | ||
4917 | for (x = 0; x < img->width; ++x, ++p) | |
4918 | { | |
4919 | /* W32_TODO: palette support needed here? */ | |
4920 | p->pixel = GET_PIXEL (ximg, x, y); | |
4921 | if (rgb_p) | |
4922 | { | |
4923 | #ifdef MAC_OS | |
4924 | p->red = RED16_FROM_ULONG (p->pixel); | |
4925 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4926 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4927 | #endif /* MAC_OS */ | |
4928 | #ifdef HAVE_NTGUI | |
4929 | p->red = 256 * GetRValue (p->pixel); | |
4930 | p->green = 256 * GetGValue (p->pixel); | |
4931 | p->blue = 256 * GetBValue (p->pixel); | |
4932 | #endif /* HAVE_NTGUI */ | |
4933 | } | |
4934 | } | |
4935 | #endif /* HAVE_X_WINDOWS */ | |
4936 | } | |
4937 | ||
4938 | Destroy_Image (ximg, prev); | |
4939 | ||
4940 | return colors; | |
4941 | } | |
4942 | ||
4943 | #ifdef HAVE_NTGUI | |
4944 | ||
4945 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4946 | created with CreateDIBSection, with the pointer to the bit values | |
4947 | stored in ximg->data. */ | |
4948 | ||
4949 | static void XPutPixel (ximg, x, y, color) | |
4950 | XImagePtr ximg; | |
4951 | int x, y; | |
4952 | COLORREF color; | |
4953 | { | |
4954 | int width = ximg->info.bmiHeader.biWidth; | |
4955 | int height = ximg->info.bmiHeader.biHeight; | |
4956 | unsigned char * pixel; | |
4957 | ||
4958 | /* True color images. */ | |
4959 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4960 | { | |
4961 | int rowbytes = width * 3; | |
4962 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4963 | if (rowbytes % 4) | |
4964 | rowbytes += 4 - (rowbytes % 4); | |
4965 | ||
4966 | pixel = ximg->data + y * rowbytes + x * 3; | |
4967 | /* Windows bitmaps are in BGR order. */ | |
4968 | *pixel = GetBValue (color); | |
4969 | *(pixel + 1) = GetGValue (color); | |
4970 | *(pixel + 2) = GetRValue (color); | |
4971 | } | |
4972 | /* Monochrome images. */ | |
4973 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4974 | { | |
4975 | int rowbytes = width / 8; | |
4976 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4977 | if (rowbytes % 4) | |
4978 | rowbytes += 4 - (rowbytes % 4); | |
4979 | pixel = ximg->data + y * rowbytes + x / 8; | |
4980 | /* Filter out palette info. */ | |
4981 | if (color & 0x00ffffff) | |
4982 | *pixel = *pixel | (1 << x % 8); | |
4983 | else | |
4984 | *pixel = *pixel & ~(1 << x % 8); | |
4985 | } | |
4986 | else | |
4987 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4988 | } | |
4989 | ||
4990 | #endif /* HAVE_NTGUI */ | |
4991 | ||
4992 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4993 | RGB members are set. F is the frame on which this all happens. | |
4994 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4995 | ||
4996 | static void | |
4997 | x_from_xcolors (f, img, colors) | |
4998 | struct frame *f; | |
4999 | struct image *img; | |
5000 | XColor *colors; | |
5001 | { | |
5002 | int x, y; | |
5003 | XImagePtr oimg; | |
5004 | Pixmap pixmap; | |
5005 | XColor *p; | |
5006 | ||
5007 | init_color_table (); | |
5008 | ||
5009 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
5010 | &oimg, &pixmap); | |
5011 | p = colors; | |
5012 | for (y = 0; y < img->height; ++y) | |
5013 | for (x = 0; x < img->width; ++x, ++p) | |
5014 | { | |
5015 | unsigned long pixel; | |
5016 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
5017 | XPutPixel (oimg, x, y, pixel); | |
5018 | } | |
5019 | ||
5020 | xfree (colors); | |
5021 | x_clear_image_1 (f, img, 1, 0, 1); | |
5022 | ||
5023 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
5024 | x_destroy_x_image (oimg); | |
5025 | img->pixmap = pixmap; | |
5026 | #ifdef COLOR_TABLE_SUPPORT | |
5027 | img->colors = colors_in_color_table (&img->ncolors); | |
5028 | free_color_table (); | |
5029 | #endif /* COLOR_TABLE_SUPPORT */ | |
5030 | } | |
5031 | ||
5032 | ||
5033 | /* On frame F, perform edge-detection on image IMG. | |
5034 | ||
5035 | MATRIX is a nine-element array specifying the transformation | |
5036 | matrix. See emboss_matrix for an example. | |
5037 | ||
5038 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
5039 | outgoing image. */ | |
5040 | ||
5041 | static void | |
5042 | x_detect_edges (f, img, matrix, color_adjust) | |
5043 | struct frame *f; | |
5044 | struct image *img; | |
5045 | int matrix[9], color_adjust; | |
5046 | { | |
5047 | XColor *colors = x_to_xcolors (f, img, 1); | |
5048 | XColor *new, *p; | |
5049 | int x, y, i, sum; | |
5050 | ||
5051 | for (i = sum = 0; i < 9; ++i) | |
5052 | sum += abs (matrix[i]); | |
5053 | ||
5054 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
5055 | ||
5056 | new = (XColor *) xmalloc (img->width * img->height * sizeof *new); | |
5057 | ||
5058 | for (y = 0; y < img->height; ++y) | |
5059 | { | |
5060 | p = COLOR (new, 0, y); | |
5061 | p->red = p->green = p->blue = 0xffff/2; | |
5062 | p = COLOR (new, img->width - 1, y); | |
5063 | p->red = p->green = p->blue = 0xffff/2; | |
5064 | } | |
5065 | ||
5066 | for (x = 1; x < img->width - 1; ++x) | |
5067 | { | |
5068 | p = COLOR (new, x, 0); | |
5069 | p->red = p->green = p->blue = 0xffff/2; | |
5070 | p = COLOR (new, x, img->height - 1); | |
5071 | p->red = p->green = p->blue = 0xffff/2; | |
5072 | } | |
5073 | ||
5074 | for (y = 1; y < img->height - 1; ++y) | |
5075 | { | |
5076 | p = COLOR (new, 1, y); | |
5077 | ||
5078 | for (x = 1; x < img->width - 1; ++x, ++p) | |
5079 | { | |
5080 | int r, g, b, y1, x1; | |
5081 | ||
5082 | r = g = b = i = 0; | |
5083 | for (y1 = y - 1; y1 < y + 2; ++y1) | |
5084 | for (x1 = x - 1; x1 < x + 2; ++x1, ++i) | |
5085 | if (matrix[i]) | |
5086 | { | |
5087 | XColor *t = COLOR (colors, x1, y1); | |
5088 | r += matrix[i] * t->red; | |
5089 | g += matrix[i] * t->green; | |
5090 | b += matrix[i] * t->blue; | |
5091 | } | |
5092 | ||
5093 | r = (r / sum + color_adjust) & 0xffff; | |
5094 | g = (g / sum + color_adjust) & 0xffff; | |
5095 | b = (b / sum + color_adjust) & 0xffff; | |
5096 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
5097 | } | |
5098 | } | |
5099 | ||
5100 | xfree (colors); | |
5101 | x_from_xcolors (f, img, new); | |
5102 | ||
5103 | #undef COLOR | |
5104 | } | |
5105 | ||
5106 | ||
5107 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
5108 | on frame F. */ | |
5109 | ||
5110 | static void | |
5111 | x_emboss (f, img) | |
5112 | struct frame *f; | |
5113 | struct image *img; | |
5114 | { | |
5115 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
5116 | } | |
5117 | ||
5118 | ||
5119 | /* Transform image IMG which is used on frame F with a Laplace | |
5120 | edge-detection algorithm. The result is an image that can be used | |
5121 | to draw disabled buttons, for example. */ | |
5122 | ||
5123 | static void | |
5124 | x_laplace (f, img) | |
5125 | struct frame *f; | |
5126 | struct image *img; | |
5127 | { | |
5128 | x_detect_edges (f, img, laplace_matrix, 45000); | |
5129 | } | |
5130 | ||
5131 | ||
5132 | /* Perform edge-detection on image IMG on frame F, with specified | |
5133 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
5134 | ||
5135 | MATRIX must be either | |
5136 | ||
5137 | - a list of at least 9 numbers in row-major form | |
5138 | - a vector of at least 9 numbers | |
5139 | ||
5140 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
5141 | number. */ | |
5142 | ||
5143 | static void | |
5144 | x_edge_detection (f, img, matrix, color_adjust) | |
5145 | struct frame *f; | |
5146 | struct image *img; | |
5147 | Lisp_Object matrix, color_adjust; | |
5148 | { | |
5149 | int i = 0; | |
5150 | int trans[9]; | |
5151 | ||
5152 | if (CONSP (matrix)) | |
5153 | { | |
5154 | for (i = 0; | |
5155 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
5156 | ++i, matrix = XCDR (matrix)) | |
5157 | trans[i] = XFLOATINT (XCAR (matrix)); | |
5158 | } | |
5159 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
5160 | { | |
5161 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
5162 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
5163 | } | |
5164 | ||
5165 | if (NILP (color_adjust)) | |
5166 | color_adjust = make_number (0xffff / 2); | |
5167 | ||
5168 | if (i == 9 && NUMBERP (color_adjust)) | |
5169 | x_detect_edges (f, img, trans, (int) XFLOATINT (color_adjust)); | |
5170 | } | |
5171 | ||
5172 | ||
5173 | /* Transform image IMG on frame F so that it looks disabled. */ | |
5174 | ||
5175 | static void | |
5176 | x_disable_image (f, img) | |
5177 | struct frame *f; | |
5178 | struct image *img; | |
5179 | { | |
5180 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
5181 | #ifdef HAVE_NTGUI | |
5182 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
5183 | #else | |
5184 | int n_planes = dpyinfo->n_planes; | |
5185 | #endif /* HAVE_NTGUI */ | |
5186 | ||
5187 | if (n_planes >= 2) | |
5188 | { | |
5189 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
5190 | drawing such images with a stipple can look very odd, so | |
5191 | we're using this method instead. */ | |
5192 | XColor *colors = x_to_xcolors (f, img, 1); | |
5193 | XColor *p, *end; | |
5194 | const int h = 15000; | |
5195 | const int l = 30000; | |
5196 | ||
5197 | for (p = colors, end = colors + img->width * img->height; | |
5198 | p < end; | |
5199 | ++p) | |
5200 | { | |
5201 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
5202 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
5203 | p->red = p->green = p->blue = i2; | |
5204 | } | |
5205 | ||
5206 | x_from_xcolors (f, img, colors); | |
5207 | } | |
5208 | ||
5209 | /* Draw a cross over the disabled image, if we must or if we | |
5210 | should. */ | |
5211 | if (n_planes < 2 || cross_disabled_images) | |
5212 | { | |
5213 | #ifndef HAVE_NTGUI | |
5214 | Display *dpy = FRAME_X_DISPLAY (f); | |
5215 | GC gc; | |
5216 | ||
5217 | #ifdef MAC_OS | |
5218 | #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, NULL, 0, NULL) | |
9ecf6403 | 5219 | #define MaskForeground(f) PIX_MASK_DRAW |
4ef0d4d0 KS |
5220 | #else |
5221 | #define XCreateGC_pixmap(dpy, pixmap) XCreateGC (dpy, pixmap, 0, NULL) | |
5222 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) | |
5223 | #endif | |
5224 | ||
5225 | gc = XCreateGC_pixmap (dpy, img->pixmap); | |
5226 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); | |
5227 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
5228 | img->width - 1, img->height - 1); | |
5229 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
5230 | img->width - 1, 0); | |
5231 | XFreeGC (dpy, gc); | |
5232 | ||
5233 | if (img->mask) | |
5234 | { | |
5235 | gc = XCreateGC_pixmap (dpy, img->mask); | |
5236 | XSetForeground (dpy, gc, MaskForeground (f)); | |
5237 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
5238 | img->width - 1, img->height - 1); | |
5239 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
5240 | img->width - 1, 0); | |
5241 | XFreeGC (dpy, gc); | |
5242 | } | |
5243 | #else | |
5244 | HDC hdc, bmpdc; | |
5245 | HGDIOBJ prev; | |
5246 | ||
5247 | hdc = get_frame_dc (f); | |
5248 | bmpdc = CreateCompatibleDC (hdc); | |
5249 | release_frame_dc (f, hdc); | |
5250 | ||
5251 | prev = SelectObject (bmpdc, img->pixmap); | |
5252 | ||
5253 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
5254 | MoveToEx (bmpdc, 0, 0, NULL); | |
5255 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5256 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5257 | LineTo (bmpdc, img->width - 1, 0); | |
5258 | ||
5259 | if (img->mask) | |
5260 | { | |
5261 | SelectObject (bmpdc, img->mask); | |
5262 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
5263 | MoveToEx (bmpdc, 0, 0, NULL); | |
5264 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
5265 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
5266 | LineTo (bmpdc, img->width - 1, 0); | |
5267 | } | |
5268 | SelectObject (bmpdc, prev); | |
5269 | DeleteDC (bmpdc); | |
5270 | #endif /* HAVE_NTGUI */ | |
5271 | } | |
5272 | } | |
5273 | ||
5274 | ||
5275 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
5276 | name of an image file, for error messages. HOW determines how to | |
5277 | determine the background color of IMG. If it is a list '(R G B)', | |
5278 | with R, G, and B being integers >= 0, take that as the color of the | |
5279 | background. Otherwise, determine the background color of IMG | |
5280 | heuristically. Value is non-zero if successful. */ | |
5281 | ||
5282 | static int | |
5283 | x_build_heuristic_mask (f, img, how) | |
5284 | struct frame *f; | |
5285 | struct image *img; | |
5286 | Lisp_Object how; | |
5287 | { | |
5288 | XImagePtr_or_DC ximg; | |
5289 | #ifndef HAVE_NTGUI | |
5290 | XImagePtr mask_img; | |
5291 | #else | |
5292 | HDC frame_dc; | |
5293 | HGDIOBJ prev; | |
5294 | char *mask_img; | |
5295 | int row_width; | |
5296 | #endif /* HAVE_NTGUI */ | |
5297 | int x, y, rc, use_img_background; | |
5298 | unsigned long bg = 0; | |
5299 | ||
5300 | if (img->mask) | |
5301 | { | |
5302 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
5303 | img->mask = NO_PIXMAP; | |
5304 | img->background_transparent_valid = 0; | |
5305 | } | |
5306 | ||
5307 | #ifndef HAVE_NTGUI | |
5308 | /* Create an image and pixmap serving as mask. */ | |
5309 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
5310 | &mask_img, &img->mask); | |
5311 | if (!rc) | |
5312 | return 0; | |
5313 | ||
5314 | /* Get the X image of IMG->pixmap. */ | |
5315 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
5316 | img->width, img->height, | |
5317 | ~0, ZPixmap); | |
5318 | #else | |
5319 | /* Create the bit array serving as mask. */ | |
5320 | row_width = (img->width + 7) / 8; | |
5321 | mask_img = xmalloc (row_width * img->height); | |
5322 | bzero (mask_img, row_width * img->height); | |
5323 | ||
5324 | /* Create a memory device context for IMG->pixmap. */ | |
5325 | frame_dc = get_frame_dc (f); | |
5326 | ximg = CreateCompatibleDC (frame_dc); | |
5327 | release_frame_dc (f, frame_dc); | |
5328 | prev = SelectObject (ximg, img->pixmap); | |
5329 | #endif /* HAVE_NTGUI */ | |
5330 | ||
5331 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
5332 | take that as color. Otherwise, use the image's background color. */ | |
5333 | use_img_background = 1; | |
5334 | ||
5335 | if (CONSP (how)) | |
5336 | { | |
5337 | int rgb[3], i; | |
5338 | ||
5339 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
5340 | { | |
5341 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
5342 | how = XCDR (how); | |
5343 | } | |
5344 | ||
5345 | if (i == 3 && NILP (how)) | |
5346 | { | |
5347 | char color_name[30]; | |
5348 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
5349 | bg = ( | |
5350 | #ifdef HAVE_NTGUI | |
5351 | 0x00ffffff & /* Filter out palette info. */ | |
5352 | #endif /* HAVE_NTGUI */ | |
5353 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
5354 | use_img_background = 0; | |
5355 | } | |
5356 | } | |
5357 | ||
5358 | if (use_img_background) | |
5359 | bg = four_corners_best (ximg, img->width, img->height); | |
5360 | ||
5361 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
5362 | from the background color bg. */ | |
5363 | #ifndef HAVE_NTGUI | |
5364 | for (y = 0; y < img->height; ++y) | |
5365 | for (x = 0; x < img->width; ++x) | |
5366 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg | |
9ecf6403 | 5367 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
4ef0d4d0 KS |
5368 | |
5369 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5370 | image_background_transparent (img, f, mask_img); | |
5371 | ||
5372 | /* Put mask_img into img->mask. */ | |
5373 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5374 | x_destroy_x_image (mask_img); | |
5375 | ||
5376 | #else | |
5377 | for (y = 0; y < img->height; ++y) | |
5378 | for (x = 0; x < img->width; ++x) | |
5379 | { | |
5380 | COLORREF p = GetPixel (ximg, x, y); | |
5381 | if (p != bg) | |
5382 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
5383 | } | |
5384 | ||
5385 | /* Create the mask image. */ | |
5386 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
5387 | mask_img); | |
5388 | /* Fill in the background_transparent field while we have the mask handy. */ | |
5389 | SelectObject (ximg, img->mask); | |
5390 | image_background_transparent (img, f, ximg); | |
5391 | ||
5392 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
5393 | xfree (mask_img); | |
5394 | #endif /* HAVE_NTGUI */ | |
5395 | ||
5396 | Destroy_Image (ximg, prev); | |
5397 | ||
5398 | return 1; | |
5399 | } | |
5400 | ||
5401 | \f | |
5402 | /*********************************************************************** | |
5403 | PBM (mono, gray, color) | |
5404 | ***********************************************************************/ | |
5405 | ||
5406 | static int pbm_image_p P_ ((Lisp_Object object)); | |
5407 | static int pbm_load P_ ((struct frame *f, struct image *img)); | |
5408 | static int pbm_scan_number P_ ((unsigned char **, unsigned char *)); | |
5409 | ||
5410 | /* The symbol `pbm' identifying images of this type. */ | |
5411 | ||
5412 | Lisp_Object Qpbm; | |
5413 | ||
5414 | /* Indices of image specification fields in gs_format, below. */ | |
5415 | ||
5416 | enum pbm_keyword_index | |
5417 | { | |
5418 | PBM_TYPE, | |
5419 | PBM_FILE, | |
5420 | PBM_DATA, | |
5421 | PBM_ASCENT, | |
5422 | PBM_MARGIN, | |
5423 | PBM_RELIEF, | |
5424 | PBM_ALGORITHM, | |
5425 | PBM_HEURISTIC_MASK, | |
5426 | PBM_MASK, | |
5427 | PBM_FOREGROUND, | |
5428 | PBM_BACKGROUND, | |
5429 | PBM_LAST | |
5430 | }; | |
5431 | ||
5432 | /* Vector of image_keyword structures describing the format | |
5433 | of valid user-defined image specifications. */ | |
5434 | ||
5435 | static struct image_keyword pbm_format[PBM_LAST] = | |
5436 | { | |
5437 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5438 | {":file", IMAGE_STRING_VALUE, 0}, | |
5439 | {":data", IMAGE_STRING_VALUE, 0}, | |
5440 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5441 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5442 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5443 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5444 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5445 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5446 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
5447 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5448 | }; | |
5449 | ||
5450 | /* Structure describing the image type `pbm'. */ | |
5451 | ||
5452 | static struct image_type pbm_type = | |
5453 | { | |
5454 | &Qpbm, | |
5455 | pbm_image_p, | |
5456 | pbm_load, | |
5457 | x_clear_image, | |
5458 | NULL | |
5459 | }; | |
5460 | ||
5461 | ||
5462 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
5463 | ||
5464 | static int | |
5465 | pbm_image_p (object) | |
5466 | Lisp_Object object; | |
5467 | { | |
5468 | struct image_keyword fmt[PBM_LAST]; | |
5469 | ||
5470 | bcopy (pbm_format, fmt, sizeof fmt); | |
5471 | ||
5472 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
5473 | return 0; | |
5474 | ||
5475 | /* Must specify either :data or :file. */ | |
5476 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
5477 | } | |
5478 | ||
5479 | ||
5480 | /* Scan a decimal number from *S and return it. Advance *S while | |
5481 | reading the number. END is the end of the string. Value is -1 at | |
5482 | end of input. */ | |
5483 | ||
5484 | static int | |
5485 | pbm_scan_number (s, end) | |
5486 | unsigned char **s, *end; | |
5487 | { | |
5488 | int c = 0, val = -1; | |
5489 | ||
5490 | while (*s < end) | |
5491 | { | |
5492 | /* Skip white-space. */ | |
5493 | while (*s < end && (c = *(*s)++, isspace (c))) | |
5494 | ; | |
5495 | ||
5496 | if (c == '#') | |
5497 | { | |
5498 | /* Skip comment to end of line. */ | |
5499 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5500 | ; | |
5501 | } | |
5502 | else if (isdigit (c)) | |
5503 | { | |
5504 | /* Read decimal number. */ | |
5505 | val = c - '0'; | |
5506 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
5507 | val = 10 * val + c - '0'; | |
5508 | break; | |
5509 | } | |
5510 | else | |
5511 | break; | |
5512 | } | |
5513 | ||
5514 | return val; | |
5515 | } | |
5516 | ||
5517 | ||
5518 | #ifdef HAVE_NTGUI | |
5519 | #if 0 /* Unused. ++kfs */ | |
5520 | ||
5521 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5522 | with xmalloc holding FILE's contents. Value is null if an error | |
5523 | occurred. *SIZE is set to the size of the file. */ | |
5524 | ||
5525 | static char * | |
5526 | pbm_read_file (file, size) | |
5527 | Lisp_Object file; | |
5528 | int *size; | |
5529 | { | |
5530 | FILE *fp = NULL; | |
5531 | char *buf = NULL; | |
5532 | struct stat st; | |
5533 | ||
5534 | if (stat (SDATA (file), &st) == 0 | |
5535 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
5536 | && (buf = (char *) xmalloc (st.st_size), | |
5537 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5538 | { | |
5539 | *size = st.st_size; | |
5540 | fclose (fp); | |
5541 | } | |
5542 | else | |
5543 | { | |
5544 | if (fp) | |
5545 | fclose (fp); | |
5546 | if (buf) | |
5547 | { | |
5548 | xfree (buf); | |
5549 | buf = NULL; | |
5550 | } | |
5551 | } | |
5552 | ||
5553 | return buf; | |
5554 | } | |
5555 | #endif | |
5556 | #endif /* HAVE_NTGUI */ | |
5557 | ||
5558 | /* Load PBM image IMG for use on frame F. */ | |
5559 | ||
5560 | static int | |
5561 | pbm_load (f, img) | |
5562 | struct frame *f; | |
5563 | struct image *img; | |
5564 | { | |
5565 | int raw_p, x, y; | |
5566 | int width, height, max_color_idx = 0; | |
5567 | XImagePtr ximg; | |
5568 | Lisp_Object file, specified_file; | |
5569 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
5570 | struct gcpro gcpro1; | |
5571 | unsigned char *contents = NULL; | |
5572 | unsigned char *end, *p; | |
5573 | int size; | |
5574 | ||
5575 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5576 | file = Qnil; | |
5577 | GCPRO1 (file); | |
5578 | ||
5579 | if (STRINGP (specified_file)) | |
5580 | { | |
5581 | file = x_find_image_file (specified_file); | |
5582 | if (!STRINGP (file)) | |
5583 | { | |
5584 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
5585 | UNGCPRO; | |
5586 | return 0; | |
5587 | } | |
5588 | ||
5589 | contents = slurp_file (SDATA (file), &size); | |
5590 | if (contents == NULL) | |
5591 | { | |
5592 | image_error ("Error reading `%s'", file, Qnil); | |
5593 | UNGCPRO; | |
5594 | return 0; | |
5595 | } | |
5596 | ||
5597 | p = contents; | |
5598 | end = contents + size; | |
5599 | } | |
5600 | else | |
5601 | { | |
5602 | Lisp_Object data; | |
5603 | data = image_spec_value (img->spec, QCdata, NULL); | |
5604 | p = SDATA (data); | |
5605 | end = p + SBYTES (data); | |
5606 | } | |
5607 | ||
5608 | /* Check magic number. */ | |
5609 | if (end - p < 2 || *p++ != 'P') | |
5610 | { | |
5611 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5612 | error: | |
5613 | xfree (contents); | |
5614 | UNGCPRO; | |
5615 | return 0; | |
5616 | } | |
5617 | ||
5618 | switch (*p++) | |
5619 | { | |
5620 | case '1': | |
5621 | raw_p = 0, type = PBM_MONO; | |
5622 | break; | |
5623 | ||
5624 | case '2': | |
5625 | raw_p = 0, type = PBM_GRAY; | |
5626 | break; | |
5627 | ||
5628 | case '3': | |
5629 | raw_p = 0, type = PBM_COLOR; | |
5630 | break; | |
5631 | ||
5632 | case '4': | |
5633 | raw_p = 1, type = PBM_MONO; | |
5634 | break; | |
5635 | ||
5636 | case '5': | |
5637 | raw_p = 1, type = PBM_GRAY; | |
5638 | break; | |
5639 | ||
5640 | case '6': | |
5641 | raw_p = 1, type = PBM_COLOR; | |
5642 | break; | |
5643 | ||
5644 | default: | |
5645 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5646 | goto error; | |
5647 | } | |
5648 | ||
5649 | /* Read width, height, maximum color-component. Characters | |
5650 | starting with `#' up to the end of a line are ignored. */ | |
5651 | width = pbm_scan_number (&p, end); | |
5652 | height = pbm_scan_number (&p, end); | |
5653 | ||
5654 | if (type != PBM_MONO) | |
5655 | { | |
5656 | max_color_idx = pbm_scan_number (&p, end); | |
5657 | if (raw_p && max_color_idx > 255) | |
5658 | max_color_idx = 255; | |
5659 | } | |
5660 | ||
f1f25b99 | 5661 | if (!check_image_size (f, width, height) |
4ef0d4d0 KS |
5662 | || (type != PBM_MONO && max_color_idx < 0)) |
5663 | goto error; | |
5664 | ||
5665 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5666 | &ximg, &img->pixmap)) | |
5667 | goto error; | |
5668 | ||
5669 | /* Initialize the color hash table. */ | |
5670 | init_color_table (); | |
5671 | ||
5672 | if (type == PBM_MONO) | |
5673 | { | |
5674 | int c = 0, g; | |
5675 | struct image_keyword fmt[PBM_LAST]; | |
5676 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5677 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5678 | ||
5679 | /* Parse the image specification. */ | |
5680 | bcopy (pbm_format, fmt, sizeof fmt); | |
5681 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); | |
5682 | ||
5683 | /* Get foreground and background colors, maybe allocate colors. */ | |
5684 | if (fmt[PBM_FOREGROUND].count | |
5685 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5686 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5687 | if (fmt[PBM_BACKGROUND].count | |
5688 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5689 | { | |
5690 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5691 | img->background = bg; | |
5692 | img->background_valid = 1; | |
5693 | } | |
5694 | ||
5695 | for (y = 0; y < height; ++y) | |
5696 | for (x = 0; x < width; ++x) | |
5697 | { | |
5698 | if (raw_p) | |
5699 | { | |
5700 | if ((x & 7) == 0) | |
5701 | c = *p++; | |
5702 | g = c & 0x80; | |
5703 | c <<= 1; | |
5704 | } | |
5705 | else | |
5706 | g = pbm_scan_number (&p, end); | |
5707 | ||
5708 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5709 | } | |
5710 | } | |
5711 | else | |
5712 | { | |
5713 | for (y = 0; y < height; ++y) | |
5714 | for (x = 0; x < width; ++x) | |
5715 | { | |
5716 | int r, g, b; | |
5717 | ||
5718 | if (type == PBM_GRAY) | |
5719 | r = g = b = raw_p ? *p++ : pbm_scan_number (&p, end); | |
5720 | else if (raw_p) | |
5721 | { | |
5722 | r = *p++; | |
5723 | g = *p++; | |
5724 | b = *p++; | |
5725 | } | |
5726 | else | |
5727 | { | |
5728 | r = pbm_scan_number (&p, end); | |
5729 | g = pbm_scan_number (&p, end); | |
5730 | b = pbm_scan_number (&p, end); | |
5731 | } | |
5732 | ||
5733 | if (r < 0 || g < 0 || b < 0) | |
5734 | { | |
5735 | x_destroy_x_image (ximg); | |
5736 | image_error ("Invalid pixel value in image `%s'", | |
5737 | img->spec, Qnil); | |
5738 | goto error; | |
5739 | } | |
5740 | ||
5741 | /* RGB values are now in the range 0..max_color_idx. | |
5742 | Scale this to the range 0..0xffff supported by X. */ | |
5743 | r = (double) r * 65535 / max_color_idx; | |
5744 | g = (double) g * 65535 / max_color_idx; | |
5745 | b = (double) b * 65535 / max_color_idx; | |
5746 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5747 | } | |
5748 | } | |
5749 | ||
5750 | #ifdef COLOR_TABLE_SUPPORT | |
5751 | /* Store in IMG->colors the colors allocated for the image, and | |
5752 | free the color table. */ | |
5753 | img->colors = colors_in_color_table (&img->ncolors); | |
5754 | free_color_table (); | |
5755 | #endif /* COLOR_TABLE_SUPPORT */ | |
5756 | ||
5757 | img->width = width; | |
5758 | img->height = height; | |
5759 | ||
5760 | /* Maybe fill in the background field while we have ximg handy. */ | |
5761 | ||
5762 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5763 | /* Casting avoids a GCC warning. */ |
5764 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5765 | |
5766 | /* Put the image into a pixmap. */ | |
5767 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5768 | x_destroy_x_image (ximg); | |
5769 | ||
5770 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5771 | img->width = width; |
4ef0d4d0 KS |
5772 | img->height = height; */ |
5773 | ||
5774 | UNGCPRO; | |
5775 | xfree (contents); | |
5776 | return 1; | |
5777 | } | |
5778 | ||
5779 | \f | |
5780 | /*********************************************************************** | |
5781 | PNG | |
5782 | ***********************************************************************/ | |
5783 | ||
5784 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
5785 | ||
5786 | /* Function prototypes. */ | |
5787 | ||
5788 | static int png_image_p P_ ((Lisp_Object object)); | |
5789 | static int png_load P_ ((struct frame *f, struct image *img)); | |
5790 | ||
5791 | /* The symbol `png' identifying images of this type. */ | |
5792 | ||
5793 | Lisp_Object Qpng; | |
5794 | ||
5795 | /* Indices of image specification fields in png_format, below. */ | |
5796 | ||
5797 | enum png_keyword_index | |
5798 | { | |
5799 | PNG_TYPE, | |
5800 | PNG_DATA, | |
5801 | PNG_FILE, | |
5802 | PNG_ASCENT, | |
5803 | PNG_MARGIN, | |
5804 | PNG_RELIEF, | |
5805 | PNG_ALGORITHM, | |
5806 | PNG_HEURISTIC_MASK, | |
5807 | PNG_MASK, | |
5808 | PNG_BACKGROUND, | |
5809 | PNG_LAST | |
5810 | }; | |
5811 | ||
5812 | /* Vector of image_keyword structures describing the format | |
5813 | of valid user-defined image specifications. */ | |
5814 | ||
5815 | static struct image_keyword png_format[PNG_LAST] = | |
5816 | { | |
5817 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5818 | {":data", IMAGE_STRING_VALUE, 0}, | |
5819 | {":file", IMAGE_STRING_VALUE, 0}, | |
5820 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5821 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5822 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5823 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5824 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5825 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5826 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5827 | }; | |
5828 | ||
5829 | /* Structure describing the image type `png'. */ | |
5830 | ||
5831 | static struct image_type png_type = | |
5832 | { | |
5833 | &Qpng, | |
5834 | png_image_p, | |
5835 | png_load, | |
5836 | x_clear_image, | |
5837 | NULL | |
5838 | }; | |
5839 | ||
5840 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5841 | ||
5842 | static int | |
5843 | png_image_p (object) | |
5844 | Lisp_Object object; | |
5845 | { | |
5846 | struct image_keyword fmt[PNG_LAST]; | |
5847 | bcopy (png_format, fmt, sizeof fmt); | |
5848 | ||
5849 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5850 | return 0; | |
5851 | ||
5852 | /* Must specify either the :data or :file keyword. */ | |
5853 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5854 | } | |
5855 | ||
5856 | #endif /* HAVE_PNG || MAC_OS */ | |
5857 | ||
5858 | ||
5859 | #ifdef HAVE_PNG | |
5860 | ||
5861 | #if defined HAVE_LIBPNG_PNG_H | |
5862 | # include <libpng/png.h> | |
5863 | #else | |
5864 | # include <png.h> | |
5865 | #endif | |
5866 | ||
5867 | #ifdef HAVE_NTGUI | |
5868 | /* PNG library details. */ | |
5869 | ||
5870 | DEF_IMGLIB_FN (png_get_io_ptr); | |
5871 | DEF_IMGLIB_FN (png_check_sig); | |
5872 | DEF_IMGLIB_FN (png_create_read_struct); | |
5873 | DEF_IMGLIB_FN (png_create_info_struct); | |
5874 | DEF_IMGLIB_FN (png_destroy_read_struct); | |
5875 | DEF_IMGLIB_FN (png_set_read_fn); | |
4ef0d4d0 KS |
5876 | DEF_IMGLIB_FN (png_set_sig_bytes); |
5877 | DEF_IMGLIB_FN (png_read_info); | |
5878 | DEF_IMGLIB_FN (png_get_IHDR); | |
5879 | DEF_IMGLIB_FN (png_get_valid); | |
5880 | DEF_IMGLIB_FN (png_set_strip_16); | |
5881 | DEF_IMGLIB_FN (png_set_expand); | |
5882 | DEF_IMGLIB_FN (png_set_gray_to_rgb); | |
5883 | DEF_IMGLIB_FN (png_set_background); | |
5884 | DEF_IMGLIB_FN (png_get_bKGD); | |
5885 | DEF_IMGLIB_FN (png_read_update_info); | |
5886 | DEF_IMGLIB_FN (png_get_channels); | |
5887 | DEF_IMGLIB_FN (png_get_rowbytes); | |
5888 | DEF_IMGLIB_FN (png_read_image); | |
5889 | DEF_IMGLIB_FN (png_read_end); | |
5890 | DEF_IMGLIB_FN (png_error); | |
5891 | ||
5892 | static int | |
0855eb52 | 5893 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
5894 | { |
5895 | HMODULE library; | |
5896 | ||
4ef0d4d0 | 5897 | /* Try loading libpng under probable names. */ |
0855eb52 | 5898 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
5899 | return 0; |
5900 | ||
5901 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
5902 | LOAD_IMGLIB_FN (library, png_check_sig); | |
5903 | LOAD_IMGLIB_FN (library, png_create_read_struct); | |
5904 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5905 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5906 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5907 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5908 | LOAD_IMGLIB_FN (library, png_read_info); | |
5909 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5910 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5911 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5912 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5913 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5914 | LOAD_IMGLIB_FN (library, png_set_background); | |
5915 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5916 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5917 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5918 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5919 | LOAD_IMGLIB_FN (library, png_read_image); | |
5920 | LOAD_IMGLIB_FN (library, png_read_end); | |
5921 | LOAD_IMGLIB_FN (library, png_error); | |
5922 | return 1; | |
5923 | } | |
5924 | #else | |
5925 | ||
5926 | #define fn_png_get_io_ptr png_get_io_ptr | |
5927 | #define fn_png_check_sig png_check_sig | |
5928 | #define fn_png_create_read_struct png_create_read_struct | |
5929 | #define fn_png_create_info_struct png_create_info_struct | |
5930 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5931 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5932 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5933 | #define fn_png_read_info png_read_info | |
5934 | #define fn_png_get_IHDR png_get_IHDR | |
5935 | #define fn_png_get_valid png_get_valid | |
5936 | #define fn_png_set_strip_16 png_set_strip_16 | |
5937 | #define fn_png_set_expand png_set_expand | |
5938 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5939 | #define fn_png_set_background png_set_background | |
5940 | #define fn_png_get_bKGD png_get_bKGD | |
5941 | #define fn_png_read_update_info png_read_update_info | |
5942 | #define fn_png_get_channels png_get_channels | |
5943 | #define fn_png_get_rowbytes png_get_rowbytes | |
5944 | #define fn_png_read_image png_read_image | |
5945 | #define fn_png_read_end png_read_end | |
5946 | #define fn_png_error png_error | |
5947 | ||
5948 | #endif /* HAVE_NTGUI */ | |
5949 | ||
5950 | /* Error and warning handlers installed when the PNG library | |
5951 | is initialized. */ | |
5952 | ||
5953 | static void | |
5954 | my_png_error (png_ptr, msg) | |
5955 | png_struct *png_ptr; | |
5956 | char *msg; | |
5957 | { | |
5958 | xassert (png_ptr != NULL); | |
5959 | image_error ("PNG error: %s", build_string (msg), Qnil); | |
5960 | longjmp (png_ptr->jmpbuf, 1); | |
5961 | } | |
5962 | ||
5963 | ||
5964 | static void | |
5965 | my_png_warning (png_ptr, msg) | |
5966 | png_struct *png_ptr; | |
5967 | char *msg; | |
5968 | { | |
5969 | xassert (png_ptr != NULL); | |
5970 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
5971 | } | |
5972 | ||
5973 | /* Memory source for PNG decoding. */ | |
5974 | ||
5975 | struct png_memory_storage | |
5976 | { | |
5977 | unsigned char *bytes; /* The data */ | |
5978 | size_t len; /* How big is it? */ | |
5979 | int index; /* Where are we? */ | |
5980 | }; | |
5981 | ||
5982 | ||
5983 | /* Function set as reader function when reading PNG image from memory. | |
5984 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5985 | bytes from the input to DATA. */ | |
5986 | ||
5987 | static void | |
5988 | png_read_from_memory (png_ptr, data, length) | |
5989 | png_structp png_ptr; | |
5990 | png_bytep data; | |
5991 | png_size_t length; | |
5992 | { | |
5993 | struct png_memory_storage *tbr | |
5994 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5995 | ||
5996 | if (length > tbr->len - tbr->index) | |
5997 | fn_png_error (png_ptr, "Read error"); | |
5998 | ||
5999 | bcopy (tbr->bytes + tbr->index, data, length); | |
6000 | tbr->index = tbr->index + length; | |
6001 | } | |
6002 | ||
b0da69a7 | 6003 | |
9a22a004 JB |
6004 | /* Function set as reader function when reading PNG image from a file. |
6005 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
6006 | bytes from the input to DATA. */ | |
6007 | ||
6008 | static void | |
6009 | png_read_from_file (png_ptr, data, length) | |
6010 | png_structp png_ptr; | |
6011 | png_bytep data; | |
6012 | png_size_t length; | |
6013 | { | |
6014 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
6015 | ||
6016 | if (fread (data, 1, length, fp) < length) | |
6017 | fn_png_error (png_ptr, "Read error"); | |
6018 | } | |
6019 | ||
6020 | ||
4ef0d4d0 KS |
6021 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
6022 | successful. */ | |
6023 | ||
6024 | static int | |
6025 | png_load (f, img) | |
6026 | struct frame *f; | |
6027 | struct image *img; | |
6028 | { | |
6029 | Lisp_Object file, specified_file; | |
6030 | Lisp_Object specified_data; | |
6031 | int x, y, i; | |
6032 | XImagePtr ximg, mask_img = NULL; | |
6033 | struct gcpro gcpro1; | |
6034 | png_struct *png_ptr = NULL; | |
6035 | png_info *info_ptr = NULL, *end_info = NULL; | |
6036 | FILE *volatile fp = NULL; | |
6037 | png_byte sig[8]; | |
6038 | png_byte * volatile pixels = NULL; | |
6039 | png_byte ** volatile rows = NULL; | |
6040 | png_uint_32 width, height; | |
6041 | int bit_depth, color_type, interlace_type; | |
6042 | png_byte channels; | |
6043 | png_uint_32 row_bytes; | |
6044 | int transparent_p; | |
6045 | double screen_gamma; | |
6046 | struct png_memory_storage tbr; /* Data to be read */ | |
6047 | ||
6048 | /* Find out what file to load. */ | |
6049 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6050 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
6051 | file = Qnil; | |
6052 | GCPRO1 (file); | |
6053 | ||
6054 | if (NILP (specified_data)) | |
6055 | { | |
6056 | file = x_find_image_file (specified_file); | |
6057 | if (!STRINGP (file)) | |
6058 | { | |
6059 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
6060 | UNGCPRO; | |
6061 | return 0; | |
6062 | } | |
6063 | ||
6064 | /* Open the image file. */ | |
6065 | fp = fopen (SDATA (file), "rb"); | |
6066 | if (!fp) | |
6067 | { | |
6068 | image_error ("Cannot open image file `%s'", file, Qnil); | |
6069 | UNGCPRO; | |
6070 | fclose (fp); | |
6071 | return 0; | |
6072 | } | |
6073 | ||
6074 | /* Check PNG signature. */ | |
6075 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
6076 | || !fn_png_check_sig (sig, sizeof sig)) | |
6077 | { | |
6078 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
6079 | UNGCPRO; | |
6080 | fclose (fp); | |
6081 | return 0; | |
6082 | } | |
6083 | } | |
6084 | else | |
6085 | { | |
6086 | /* Read from memory. */ | |
6087 | tbr.bytes = SDATA (specified_data); | |
6088 | tbr.len = SBYTES (specified_data); | |
6089 | tbr.index = 0; | |
6090 | ||
6091 | /* Check PNG signature. */ | |
6092 | if (tbr.len < sizeof sig | |
6093 | || !fn_png_check_sig (tbr.bytes, sizeof sig)) | |
6094 | { | |
6095 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
6096 | UNGCPRO; | |
6097 | return 0; | |
6098 | } | |
6099 | ||
6100 | /* Need to skip past the signature. */ | |
6101 | tbr.bytes += sizeof (sig); | |
6102 | } | |
6103 | ||
2e09fef1 EZ |
6104 | /* Initialize read and info structs for PNG lib. Casting return |
6105 | value avoids a GCC warning on W32. */ | |
6106 | png_ptr = (png_structp)fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
6107 | NULL, my_png_error, | |
6108 | my_png_warning); | |
4ef0d4d0 KS |
6109 | if (!png_ptr) |
6110 | { | |
6111 | if (fp) fclose (fp); | |
6112 | UNGCPRO; | |
6113 | return 0; | |
6114 | } | |
6115 | ||
2e09fef1 EZ |
6116 | /* Casting return value avoids a GCC warning on W32. */ |
6117 | info_ptr = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6118 | if (!info_ptr) |
6119 | { | |
6120 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
6121 | if (fp) fclose (fp); | |
6122 | UNGCPRO; | |
6123 | return 0; | |
6124 | } | |
6125 | ||
2e09fef1 EZ |
6126 | /* Casting return value avoids a GCC warning on W32. */ |
6127 | end_info = (png_infop)fn_png_create_info_struct (png_ptr); | |
4ef0d4d0 KS |
6128 | if (!end_info) |
6129 | { | |
6130 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
6131 | if (fp) fclose (fp); | |
6132 | UNGCPRO; | |
6133 | return 0; | |
6134 | } | |
6135 | ||
6136 | /* Set error jump-back. We come back here when the PNG library | |
6137 | detects an error. */ | |
6138 | if (setjmp (png_ptr->jmpbuf)) | |
6139 | { | |
6140 | error: | |
6141 | if (png_ptr) | |
6142 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6143 | xfree (pixels); | |
6144 | xfree (rows); | |
6145 | if (fp) fclose (fp); | |
6146 | UNGCPRO; | |
6147 | return 0; | |
6148 | } | |
6149 | ||
6150 | /* Read image info. */ | |
6151 | if (!NILP (specified_data)) | |
6152 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
6153 | else | |
9a22a004 | 6154 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
6155 | |
6156 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
6157 | fn_png_read_info (png_ptr, info_ptr); | |
6158 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
6159 | &interlace_type, NULL, NULL); | |
6160 | ||
f1f25b99 CY |
6161 | if (!check_image_size (f, width, height)) |
6162 | goto error; | |
6163 | ||
4ef0d4d0 KS |
6164 | /* If image contains simply transparency data, we prefer to |
6165 | construct a clipping mask. */ | |
6166 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
6167 | transparent_p = 1; | |
6168 | else | |
6169 | transparent_p = 0; | |
6170 | ||
6171 | /* This function is easier to write if we only have to handle | |
6172 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
6173 | transform other formats into that format. */ | |
6174 | ||
6175 | /* Strip more than 8 bits per channel. */ | |
6176 | if (bit_depth == 16) | |
6177 | fn_png_set_strip_16 (png_ptr); | |
6178 | ||
6179 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
6180 | if available. */ | |
6181 | fn_png_set_expand (png_ptr); | |
6182 | ||
6183 | /* Convert grayscale images to RGB. */ | |
6184 | if (color_type == PNG_COLOR_TYPE_GRAY | |
6185 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
6186 | fn_png_set_gray_to_rgb (png_ptr); | |
6187 | ||
6188 | screen_gamma = (f->gamma ? 1 / f->gamma / 0.45455 : 2.2); | |
6189 | ||
6190 | #if 0 /* Avoid double gamma correction for PNG images. */ | |
6191 | { /* Tell the PNG lib to handle gamma correction for us. */ | |
6192 | int intent; | |
6193 | double image_gamma; | |
6194 | #if defined(PNG_READ_sRGB_SUPPORTED) || defined(PNG_WRITE_sRGB_SUPPORTED) | |
6195 | if (png_get_sRGB (png_ptr, info_ptr, &intent)) | |
6196 | /* The libpng documentation says this is right in this case. */ | |
6197 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6198 | else | |
6199 | #endif | |
6200 | if (png_get_gAMA (png_ptr, info_ptr, &image_gamma)) | |
6201 | /* Image contains gamma information. */ | |
6202 | png_set_gamma (png_ptr, screen_gamma, image_gamma); | |
6203 | else | |
6204 | /* Use the standard default for the image gamma. */ | |
6205 | png_set_gamma (png_ptr, screen_gamma, 0.45455); | |
6206 | } | |
6207 | #endif /* if 0 */ | |
6208 | ||
6209 | /* Handle alpha channel by combining the image with a background | |
6210 | color. Do this only if a real alpha channel is supplied. For | |
6211 | simple transparency, we prefer a clipping mask. */ | |
6212 | if (!transparent_p) | |
6213 | { | |
6214 | png_color_16 *image_bg; | |
6215 | Lisp_Object specified_bg | |
6216 | = image_spec_value (img->spec, QCbackground, NULL); | |
6217 | ||
6218 | if (STRINGP (specified_bg)) | |
6219 | /* The user specified `:background', use that. */ | |
6220 | { | |
6221 | /* W32 version incorrectly used COLORREF here!! ++kfs */ | |
6222 | XColor color; | |
6223 | if (x_defined_color (f, SDATA (specified_bg), &color, 0)) | |
6224 | { | |
6225 | png_color_16 user_bg; | |
6226 | ||
6227 | bzero (&user_bg, sizeof user_bg); | |
1f026899 KS |
6228 | user_bg.red = color.red >> 8; |
6229 | user_bg.green = color.green >> 8; | |
6230 | user_bg.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6231 | |
6232 | fn_png_set_background (png_ptr, &user_bg, | |
6233 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6234 | } | |
6235 | } | |
6236 | else if (fn_png_get_bKGD (png_ptr, info_ptr, &image_bg)) | |
6237 | /* Image contains a background color with which to | |
6238 | combine the image. */ | |
6239 | fn_png_set_background (png_ptr, image_bg, | |
6240 | PNG_BACKGROUND_GAMMA_FILE, 1, 1.0); | |
6241 | else | |
6242 | { | |
6243 | /* Image does not contain a background color with which | |
6244 | to combine the image data via an alpha channel. Use | |
6245 | the frame's background instead. */ | |
6246 | #ifdef HAVE_X_WINDOWS | |
6247 | XColor color; | |
6248 | png_color_16 frame_background; | |
6249 | ||
6250 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
6251 | x_query_color (f, &color); | |
6252 | ||
6253 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6254 | frame_background.red = color.red >> 8; |
6255 | frame_background.green = color.green >> 8; | |
6256 | frame_background.blue = color.blue >> 8; | |
4ef0d4d0 KS |
6257 | #endif /* HAVE_X_WINDOWS */ |
6258 | ||
6259 | #ifdef HAVE_NTGUI | |
6260 | COLORREF color; | |
6261 | png_color_16 frame_background; | |
6262 | color = FRAME_BACKGROUND_PIXEL (f); | |
6263 | #if 0 /* W32 TODO : Colormap support. */ | |
6264 | x_query_color (f, &color); | |
6265 | #endif | |
6266 | bzero (&frame_background, sizeof frame_background); | |
1f026899 KS |
6267 | frame_background.red = GetRValue (color); |
6268 | frame_background.green = GetGValue (color); | |
6269 | frame_background.blue = GetBValue (color); | |
4ef0d4d0 KS |
6270 | #endif /* HAVE_NTGUI */ |
6271 | ||
6272 | #ifdef MAC_OS | |
6273 | unsigned long color; | |
6274 | png_color_16 frame_background; | |
6275 | color = FRAME_BACKGROUND_PIXEL (f); | |
6276 | #if 0 /* MAC/W32 TODO : Colormap support. */ | |
6277 | x_query_color (f, &color); | |
6278 | #endif | |
6279 | bzero (&frame_background, sizeof frame_background); | |
6280 | frame_background.red = RED_FROM_ULONG (color); | |
6281 | frame_background.green = GREEN_FROM_ULONG (color); | |
6282 | frame_background.blue = BLUE_FROM_ULONG (color); | |
6283 | #endif /* MAC_OS */ | |
6284 | ||
6285 | fn_png_set_background (png_ptr, &frame_background, | |
6286 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
6287 | } | |
6288 | } | |
6289 | ||
6290 | /* Update info structure. */ | |
6291 | fn_png_read_update_info (png_ptr, info_ptr); | |
6292 | ||
6293 | /* Get number of channels. Valid values are 1 for grayscale images | |
6294 | and images with a palette, 2 for grayscale images with transparency | |
6295 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
6296 | images with alpha channel, i.e. RGBA. If conversions above were | |
6297 | sufficient we should only have 3 or 4 channels here. */ | |
6298 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
6299 | xassert (channels == 3 || channels == 4); | |
6300 | ||
6301 | /* Number of bytes needed for one row of the image. */ | |
6302 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
6303 | ||
6304 | /* Allocate memory for the image. */ | |
6305 | pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels); | |
6306 | rows = (png_byte **) xmalloc (height * sizeof *rows); | |
6307 | for (i = 0; i < height; ++i) | |
6308 | rows[i] = pixels + i * row_bytes; | |
6309 | ||
6310 | /* Read the entire image. */ | |
6311 | fn_png_read_image (png_ptr, rows); | |
6312 | fn_png_read_end (png_ptr, info_ptr); | |
6313 | if (fp) | |
6314 | { | |
6315 | fclose (fp); | |
6316 | fp = NULL; | |
6317 | } | |
6318 | ||
6319 | /* Create the X image and pixmap. */ | |
6320 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
6321 | &img->pixmap)) | |
6322 | goto error; | |
6323 | ||
6324 | /* Create an image and pixmap serving as mask if the PNG image | |
6325 | contains an alpha channel. */ | |
6326 | if (channels == 4 | |
6327 | && !transparent_p | |
6328 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
6329 | &mask_img, &img->mask)) | |
6330 | { | |
6331 | x_destroy_x_image (ximg); | |
6332 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
6333 | img->pixmap = NO_PIXMAP; | |
6334 | goto error; | |
6335 | } | |
6336 | ||
6337 | /* Fill the X image and mask from PNG data. */ | |
6338 | init_color_table (); | |
6339 | ||
6340 | for (y = 0; y < height; ++y) | |
6341 | { | |
6342 | png_byte *p = rows[y]; | |
6343 | ||
6344 | for (x = 0; x < width; ++x) | |
6345 | { | |
6346 | unsigned r, g, b; | |
6347 | ||
6348 | r = *p++ << 8; | |
6349 | g = *p++ << 8; | |
6350 | b = *p++ << 8; | |
6351 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
6352 | /* An alpha channel, aka mask channel, associates variable | |
6353 | transparency with an image. Where other image formats | |
6354 | support binary transparency---fully transparent or fully | |
6355 | opaque---PNG allows up to 254 levels of partial transparency. | |
6356 | The PNG library implements partial transparency by combining | |
6357 | the image with a specified background color. | |
6358 | ||
6359 | I'm not sure how to handle this here nicely: because the | |
6360 | background on which the image is displayed may change, for | |
6361 | real alpha channel support, it would be necessary to create | |
6362 | a new image for each possible background. | |
6363 | ||
6364 | What I'm doing now is that a mask is created if we have | |
6365 | boolean transparency information. Otherwise I'm using | |
6366 | the frame's background color to combine the image with. */ | |
6367 | ||
6368 | if (channels == 4) | |
6369 | { | |
6370 | if (mask_img) | |
9ecf6403 | 6371 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
6372 | ++p; |
6373 | } | |
6374 | } | |
6375 | } | |
6376 | ||
6377 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
6378 | /* Set IMG's background color from the PNG image, unless the user | |
6379 | overrode it. */ | |
6380 | { | |
6381 | png_color_16 *bg; | |
6382 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
6383 | { | |
6384 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
6385 | img->background_valid = 1; | |
6386 | } | |
6387 | } | |
6388 | ||
6389 | #ifdef COLOR_TABLE_SUPPORT | |
6390 | /* Remember colors allocated for this image. */ | |
6391 | img->colors = colors_in_color_table (&img->ncolors); | |
6392 | free_color_table (); | |
6393 | #endif /* COLOR_TABLE_SUPPORT */ | |
6394 | ||
6395 | /* Clean up. */ | |
6396 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
6397 | xfree (rows); | |
6398 | xfree (pixels); | |
6399 | ||
6400 | img->width = width; | |
6401 | img->height = height; | |
6402 | ||
2e09fef1 EZ |
6403 | /* Maybe fill in the background field while we have ximg handy. |
6404 | Casting avoids a GCC warning. */ | |
6405 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6406 | |
6407 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6408 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6409 | x_destroy_x_image (ximg); | |
6410 | ||
6411 | /* Same for the mask. */ | |
6412 | if (mask_img) | |
6413 | { | |
2e09fef1 EZ |
6414 | /* Fill in the background_transparent field while we have the |
6415 | mask handy. Casting avoids a GCC warning. */ | |
6416 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
6417 | |
6418 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
6419 | x_destroy_x_image (mask_img); | |
6420 | } | |
6421 | ||
6422 | UNGCPRO; | |
6423 | return 1; | |
6424 | } | |
6425 | ||
6426 | #else /* HAVE_PNG */ | |
6427 | ||
6428 | #ifdef MAC_OS | |
6429 | static int | |
6430 | png_load (f, img) | |
6431 | struct frame *f; | |
6432 | struct image *img; | |
6433 | { | |
6434 | #ifdef MAC_OSX | |
6435 | if (MyCGImageCreateWithPNGDataProvider) | |
6436 | return image_load_quartz2d (f, img, 1); | |
6437 | else | |
6438 | #endif | |
6439 | return image_load_quicktime (f, img, kQTFileTypePNG); | |
6440 | } | |
6441 | #endif /* MAC_OS */ | |
6442 | ||
6443 | #endif /* !HAVE_PNG */ | |
6444 | ||
6445 | ||
6446 | \f | |
6447 | /*********************************************************************** | |
6448 | JPEG | |
6449 | ***********************************************************************/ | |
6450 | ||
6451 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
6452 | ||
6453 | static int jpeg_image_p P_ ((Lisp_Object object)); | |
6454 | static int jpeg_load P_ ((struct frame *f, struct image *img)); | |
6455 | ||
6456 | /* The symbol `jpeg' identifying images of this type. */ | |
6457 | ||
6458 | Lisp_Object Qjpeg; | |
6459 | ||
6460 | /* Indices of image specification fields in gs_format, below. */ | |
6461 | ||
6462 | enum jpeg_keyword_index | |
6463 | { | |
6464 | JPEG_TYPE, | |
6465 | JPEG_DATA, | |
6466 | JPEG_FILE, | |
6467 | JPEG_ASCENT, | |
6468 | JPEG_MARGIN, | |
6469 | JPEG_RELIEF, | |
6470 | JPEG_ALGORITHM, | |
6471 | JPEG_HEURISTIC_MASK, | |
6472 | JPEG_MASK, | |
6473 | JPEG_BACKGROUND, | |
6474 | JPEG_LAST | |
6475 | }; | |
6476 | ||
6477 | /* Vector of image_keyword structures describing the format | |
6478 | of valid user-defined image specifications. */ | |
6479 | ||
6480 | static struct image_keyword jpeg_format[JPEG_LAST] = | |
6481 | { | |
6482 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6483 | {":data", IMAGE_STRING_VALUE, 0}, | |
6484 | {":file", IMAGE_STRING_VALUE, 0}, | |
6485 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6486 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6487 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6488 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6489 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6490 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6491 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6492 | }; | |
6493 | ||
6494 | /* Structure describing the image type `jpeg'. */ | |
6495 | ||
6496 | static struct image_type jpeg_type = | |
6497 | { | |
6498 | &Qjpeg, | |
6499 | jpeg_image_p, | |
6500 | jpeg_load, | |
6501 | x_clear_image, | |
6502 | NULL | |
6503 | }; | |
6504 | ||
6505 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6506 | ||
6507 | static int | |
6508 | jpeg_image_p (object) | |
6509 | Lisp_Object object; | |
6510 | { | |
6511 | struct image_keyword fmt[JPEG_LAST]; | |
6512 | ||
6513 | bcopy (jpeg_format, fmt, sizeof fmt); | |
6514 | ||
6515 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6516 | return 0; | |
6517 | ||
6518 | /* Must specify either the :data or :file keyword. */ | |
6519 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6520 | } | |
6521 | ||
6522 | #endif /* HAVE_JPEG || MAC_OS */ | |
6523 | ||
6524 | #ifdef HAVE_JPEG | |
6525 | ||
6526 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6527 | jconfig.h. */ | |
6528 | #ifdef HAVE_STDLIB_H | |
6529 | #define HAVE_STDLIB_H_1 | |
6530 | #undef HAVE_STDLIB_H | |
6531 | #endif /* HAVE_STLIB_H */ | |
6532 | ||
66354420 | 6533 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6534 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6535 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6536 | #define __WIN32__ 1 |
6537 | #endif | |
6538 | ||
4ef0d4d0 KS |
6539 | #include <jpeglib.h> |
6540 | #include <jerror.h> | |
6541 | #include <setjmp.h> | |
6542 | ||
6543 | #ifdef HAVE_STLIB_H_1 | |
6544 | #define HAVE_STDLIB_H 1 | |
6545 | #endif | |
6546 | ||
6547 | #ifdef HAVE_NTGUI | |
6548 | ||
6549 | /* JPEG library details. */ | |
6550 | DEF_IMGLIB_FN (jpeg_CreateDecompress); | |
6551 | DEF_IMGLIB_FN (jpeg_start_decompress); | |
6552 | DEF_IMGLIB_FN (jpeg_finish_decompress); | |
6553 | DEF_IMGLIB_FN (jpeg_destroy_decompress); | |
6554 | DEF_IMGLIB_FN (jpeg_read_header); | |
6555 | DEF_IMGLIB_FN (jpeg_read_scanlines); | |
4ef0d4d0 KS |
6556 | DEF_IMGLIB_FN (jpeg_std_error); |
6557 | DEF_IMGLIB_FN (jpeg_resync_to_restart); | |
6558 | ||
6559 | static int | |
0855eb52 | 6560 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6561 | { |
6562 | HMODULE library; | |
6563 | ||
0855eb52 | 6564 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6565 | return 0; |
6566 | ||
6567 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6568 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6569 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6570 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6571 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6572 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6573 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6574 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6575 | return 1; | |
6576 | } | |
6577 | ||
6578 | /* Wrapper since we can't directly assign the function pointer | |
6579 | to another function pointer that was declared more completely easily. */ | |
6580 | static boolean | |
6581 | jpeg_resync_to_restart_wrapper(cinfo, desired) | |
6582 | j_decompress_ptr cinfo; | |
6583 | int desired; | |
6584 | { | |
6585 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6586 | } | |
6587 | ||
6588 | #else | |
6589 | ||
6590 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a) | |
6591 | #define fn_jpeg_start_decompress jpeg_start_decompress | |
6592 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6593 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6594 | #define fn_jpeg_read_header jpeg_read_header | |
6595 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6596 | #define fn_jpeg_std_error jpeg_std_error |
6597 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6598 | ||
6599 | #endif /* HAVE_NTGUI */ | |
6600 | ||
6601 | struct my_jpeg_error_mgr | |
6602 | { | |
6603 | struct jpeg_error_mgr pub; | |
6604 | jmp_buf setjmp_buffer; | |
6605 | }; | |
6606 | ||
6607 | ||
6608 | static void | |
6609 | my_error_exit (cinfo) | |
6610 | j_common_ptr cinfo; | |
6611 | { | |
6612 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6613 | longjmp (mgr->setjmp_buffer, 1); | |
6614 | } | |
6615 | ||
6616 | ||
6617 | /* Init source method for JPEG data source manager. Called by | |
6618 | jpeg_read_header() before any data is actually read. See | |
6619 | libjpeg.doc from the JPEG lib distribution. */ | |
6620 | ||
6621 | static void | |
b25a72ab JB |
6622 | our_common_init_source (cinfo) |
6623 | j_decompress_ptr cinfo; | |
6624 | { | |
6625 | } | |
6626 | ||
6627 | ||
6628 | /* Method to terminate data source. Called by | |
6629 | jpeg_finish_decompress() after all data has been processed. */ | |
6630 | ||
6631 | static void | |
6632 | our_common_term_source (cinfo) | |
4ef0d4d0 KS |
6633 | j_decompress_ptr cinfo; |
6634 | { | |
6635 | } | |
6636 | ||
6637 | ||
6638 | /* Fill input buffer method for JPEG data source manager. Called | |
6639 | whenever more data is needed. We read the whole image in one step, | |
6640 | so this only adds a fake end of input marker at the end. */ | |
6641 | ||
6642 | static boolean | |
b25a72ab | 6643 | our_memory_fill_input_buffer (cinfo) |
4ef0d4d0 KS |
6644 | j_decompress_ptr cinfo; |
6645 | { | |
6646 | /* Insert a fake EOI marker. */ | |
6647 | struct jpeg_source_mgr *src = cinfo->src; | |
6648 | static JOCTET buffer[2]; | |
6649 | ||
6650 | buffer[0] = (JOCTET) 0xFF; | |
6651 | buffer[1] = (JOCTET) JPEG_EOI; | |
6652 | ||
6653 | src->next_input_byte = buffer; | |
6654 | src->bytes_in_buffer = 2; | |
e0e30823 | 6655 | return 1; |
4ef0d4d0 KS |
6656 | } |
6657 | ||
6658 | ||
6659 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6660 | is the JPEG data source manager. */ | |
6661 | ||
6662 | static void | |
b25a72ab | 6663 | our_memory_skip_input_data (cinfo, num_bytes) |
4ef0d4d0 KS |
6664 | j_decompress_ptr cinfo; |
6665 | long num_bytes; | |
6666 | { | |
6667 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6668 | ||
6669 | if (src) | |
6670 | { | |
6671 | if (num_bytes > src->bytes_in_buffer) | |
6672 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6673 | ||
6674 | src->bytes_in_buffer -= num_bytes; | |
6675 | src->next_input_byte += num_bytes; | |
6676 | } | |
6677 | } | |
6678 | ||
6679 | ||
4ef0d4d0 KS |
6680 | /* Set up the JPEG lib for reading an image from DATA which contains |
6681 | LEN bytes. CINFO is the decompression info structure created for | |
6682 | reading the image. */ | |
6683 | ||
6684 | static void | |
6685 | jpeg_memory_src (cinfo, data, len) | |
6686 | j_decompress_ptr cinfo; | |
6687 | JOCTET *data; | |
6688 | unsigned int len; | |
6689 | { | |
6690 | struct jpeg_source_mgr *src; | |
6691 | ||
6692 | if (cinfo->src == NULL) | |
6693 | { | |
6694 | /* First time for this JPEG object? */ | |
6695 | cinfo->src = (struct jpeg_source_mgr *) | |
6696 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6697 | sizeof (struct jpeg_source_mgr)); | |
6698 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6699 | src->next_input_byte = data; | |
6700 | } | |
6701 | ||
6702 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6703 | src->init_source = our_common_init_source; |
6704 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6705 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6706 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6707 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6708 | src->bytes_in_buffer = len; |
6709 | src->next_input_byte = data; | |
6710 | } | |
6711 | ||
6712 | ||
b25a72ab JB |
6713 | struct jpeg_stdio_mgr |
6714 | { | |
6715 | struct jpeg_source_mgr mgr; | |
6716 | boolean finished; | |
6717 | FILE *file; | |
6718 | JOCTET *buffer; | |
6719 | }; | |
6720 | ||
6721 | ||
6722 | /* Size of buffer to read JPEG from file. | |
6723 | Not too big, as we want to use alloc_small. */ | |
6724 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6725 | ||
6726 | ||
6727 | /* Fill input buffer method for JPEG data source manager. Called | |
6728 | whenever more data is needed. The data is read from a FILE *. */ | |
6729 | ||
6730 | static boolean | |
6731 | our_stdio_fill_input_buffer (cinfo) | |
6732 | j_decompress_ptr cinfo; | |
6733 | { | |
6734 | struct jpeg_stdio_mgr *src; | |
6735 | ||
6736 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6737 | if (!src->finished) | |
6738 | { | |
6739 | size_t bytes; | |
6740 | ||
6741 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6742 | if (bytes > 0) | |
6743 | src->mgr.bytes_in_buffer = bytes; | |
6744 | else | |
6745 | { | |
6746 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6747 | src->finished = 1; | |
6748 | src->buffer[0] = (JOCTET) 0xFF; | |
6749 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6750 | src->mgr.bytes_in_buffer = 2; | |
6751 | } | |
6752 | src->mgr.next_input_byte = src->buffer; | |
6753 | } | |
6754 | ||
6755 | return 1; | |
6756 | } | |
6757 | ||
6758 | ||
6759 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6760 | is the JPEG data source manager. */ | |
6761 | ||
6762 | static void | |
6763 | our_stdio_skip_input_data (cinfo, num_bytes) | |
6764 | j_decompress_ptr cinfo; | |
6765 | long num_bytes; | |
6766 | { | |
6767 | struct jpeg_stdio_mgr *src; | |
6768 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6769 | ||
6770 | while (num_bytes > 0 && !src->finished) | |
6771 | { | |
6772 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6773 | { | |
6774 | src->mgr.bytes_in_buffer -= num_bytes; | |
6775 | src->mgr.next_input_byte += num_bytes; | |
6776 | break; | |
6777 | } | |
6778 | else | |
6779 | { | |
6780 | num_bytes -= src->mgr.bytes_in_buffer; | |
6781 | src->mgr.bytes_in_buffer = 0; | |
6782 | src->mgr.next_input_byte = NULL; | |
6783 | ||
6784 | our_stdio_fill_input_buffer (cinfo); | |
6785 | } | |
6786 | } | |
6787 | } | |
6788 | ||
6789 | ||
6790 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6791 | CINFO is the decompression info structure created for | |
6792 | reading the image. */ | |
6793 | ||
6794 | static void | |
6795 | jpeg_file_src (cinfo, fp) | |
6796 | j_decompress_ptr cinfo; | |
6797 | FILE *fp; | |
6798 | { | |
6799 | struct jpeg_stdio_mgr *src; | |
6800 | ||
6801 | if (cinfo->src != NULL) | |
6802 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6803 | else | |
6804 | { | |
6805 | /* First time for this JPEG object? */ | |
6806 | cinfo->src = (struct jpeg_source_mgr *) | |
6807 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6808 | sizeof (struct jpeg_stdio_mgr)); | |
6809 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6810 | src->buffer = (JOCTET *) | |
6811 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6812 | JPEG_STDIO_BUFFER_SIZE); | |
6813 | } | |
6814 | ||
6815 | src->file = fp; | |
6816 | src->finished = 0; | |
6817 | src->mgr.init_source = our_common_init_source; | |
6818 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6819 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6820 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6821 | src->mgr.term_source = our_common_term_source; | |
6822 | src->mgr.bytes_in_buffer = 0; | |
6823 | src->mgr.next_input_byte = NULL; | |
6824 | } | |
6825 | ||
6826 | ||
4ef0d4d0 KS |
6827 | /* Load image IMG for use on frame F. Patterned after example.c |
6828 | from the JPEG lib. */ | |
6829 | ||
6830 | static int | |
6831 | jpeg_load (f, img) | |
6832 | struct frame *f; | |
6833 | struct image *img; | |
6834 | { | |
6835 | struct jpeg_decompress_struct cinfo; | |
6836 | struct my_jpeg_error_mgr mgr; | |
6837 | Lisp_Object file, specified_file; | |
6838 | Lisp_Object specified_data; | |
6839 | FILE * volatile fp = NULL; | |
6840 | JSAMPARRAY buffer; | |
6841 | int row_stride, x, y; | |
6842 | XImagePtr ximg = NULL; | |
6843 | int rc; | |
6844 | unsigned long *colors; | |
6845 | int width, height; | |
6846 | struct gcpro gcpro1; | |
6847 | ||
6848 | /* Open the JPEG file. */ | |
6849 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6850 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
6851 | file = Qnil; | |
6852 | GCPRO1 (file); | |
6853 | ||
6854 | if (NILP (specified_data)) | |
6855 | { | |
6856 | file = x_find_image_file (specified_file); | |
6857 | if (!STRINGP (file)) | |
6858 | { | |
6859 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
6860 | UNGCPRO; | |
6861 | return 0; | |
6862 | } | |
6863 | ||
6864 | fp = fopen (SDATA (file), "rb"); | |
6865 | if (fp == NULL) | |
6866 | { | |
6867 | image_error ("Cannot open `%s'", file, Qnil); | |
6868 | UNGCPRO; | |
6869 | return 0; | |
6870 | } | |
6871 | } | |
6872 | ||
6873 | /* Customize libjpeg's error handling to call my_error_exit when an | |
2e09fef1 EZ |
6874 | error is detected. This function will perform a longjmp. |
6875 | Casting return value avoids a GCC warning on W32. */ | |
6876 | cinfo.err = (struct jpeg_error_mgr *)fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
6877 | mgr.pub.error_exit = my_error_exit; |
6878 | ||
6879 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
6880 | { | |
6881 | if (rc == 1) | |
6882 | { | |
6883 | /* Called from my_error_exit. Display a JPEG error. */ | |
6884 | char buffer[JMSG_LENGTH_MAX]; | |
6885 | cinfo.err->format_message ((j_common_ptr) &cinfo, buffer); | |
6886 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
6887 | build_string (buffer)); | |
6888 | } | |
6889 | ||
6890 | /* Close the input file and destroy the JPEG object. */ | |
6891 | if (fp) | |
6892 | fclose ((FILE *) fp); | |
6893 | fn_jpeg_destroy_decompress (&cinfo); | |
6894 | ||
6895 | /* If we already have an XImage, free that. */ | |
6896 | x_destroy_x_image (ximg); | |
6897 | ||
6898 | /* Free pixmap and colors. */ | |
6899 | x_clear_image (f, img); | |
6900 | ||
6901 | UNGCPRO; | |
6902 | return 0; | |
6903 | } | |
6904 | ||
6905 | /* Create the JPEG decompression object. Let it read from fp. | |
6906 | Read the JPEG image header. */ | |
6907 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
6908 | ||
6909 | if (NILP (specified_data)) | |
b25a72ab | 6910 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
6911 | else |
6912 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
6913 | SBYTES (specified_data)); | |
6914 | ||
e0e30823 | 6915 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
6916 | |
6917 | /* Customize decompression so that color quantization will be used. | |
6918 | Start decompression. */ | |
e0e30823 | 6919 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
6920 | fn_jpeg_start_decompress (&cinfo); |
6921 | width = img->width = cinfo.output_width; | |
6922 | height = img->height = cinfo.output_height; | |
6923 | ||
f1f25b99 CY |
6924 | if (!check_image_size (f, width, height)) |
6925 | { | |
6926 | image_error ("Invalid image size", Qnil, Qnil); | |
6927 | longjmp (mgr.setjmp_buffer, 2); | |
6928 | } | |
6929 | ||
4ef0d4d0 KS |
6930 | /* Create X image and pixmap. */ |
6931 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6932 | longjmp (mgr.setjmp_buffer, 2); | |
6933 | ||
6934 | /* Allocate colors. When color quantization is used, | |
6935 | cinfo.actual_number_of_colors has been set with the number of | |
6936 | colors generated, and cinfo.colormap is a two-dimensional array | |
6937 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
6938 | No more than 255 colors will be generated. */ | |
6939 | { | |
6940 | int i, ir, ig, ib; | |
6941 | ||
6942 | if (cinfo.out_color_components > 2) | |
6943 | ir = 0, ig = 1, ib = 2; | |
6944 | else if (cinfo.out_color_components > 1) | |
6945 | ir = 0, ig = 1, ib = 0; | |
6946 | else | |
6947 | ir = 0, ig = 0, ib = 0; | |
6948 | ||
6949 | /* Use the color table mechanism because it handles colors that | |
6950 | cannot be allocated nicely. Such colors will be replaced with | |
6951 | a default color, and we don't have to care about which colors | |
6952 | can be freed safely, and which can't. */ | |
6953 | init_color_table (); | |
6954 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
6955 | * sizeof *colors); | |
6956 | ||
6957 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
6958 | { | |
6959 | /* Multiply RGB values with 255 because X expects RGB values | |
6960 | in the range 0..0xffff. */ | |
6961 | int r = cinfo.colormap[ir][i] << 8; | |
6962 | int g = cinfo.colormap[ig][i] << 8; | |
6963 | int b = cinfo.colormap[ib][i] << 8; | |
6964 | colors[i] = lookup_rgb_color (f, r, g, b); | |
6965 | } | |
6966 | ||
6967 | #ifdef COLOR_TABLE_SUPPORT | |
6968 | /* Remember those colors actually allocated. */ | |
6969 | img->colors = colors_in_color_table (&img->ncolors); | |
6970 | free_color_table (); | |
6971 | #endif /* COLOR_TABLE_SUPPORT */ | |
6972 | } | |
6973 | ||
6974 | /* Read pixels. */ | |
6975 | row_stride = width * cinfo.output_components; | |
6976 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
6977 | row_stride, 1); | |
6978 | for (y = 0; y < height; ++y) | |
6979 | { | |
6980 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
6981 | for (x = 0; x < cinfo.output_width; ++x) | |
6982 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
6983 | } | |
6984 | ||
6985 | /* Clean up. */ | |
6986 | fn_jpeg_finish_decompress (&cinfo); | |
6987 | fn_jpeg_destroy_decompress (&cinfo); | |
6988 | if (fp) | |
6989 | fclose ((FILE *) fp); | |
6990 | ||
6991 | /* Maybe fill in the background field while we have ximg handy. */ | |
6992 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6993 | /* Casting avoids a GCC warning. */ |
6994 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6995 | |
6996 | /* Put the image into the pixmap. */ | |
6997 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6998 | x_destroy_x_image (ximg); | |
6999 | UNGCPRO; | |
7000 | return 1; | |
7001 | } | |
7002 | ||
7003 | #else /* HAVE_JPEG */ | |
7004 | ||
7005 | #ifdef MAC_OS | |
7006 | static int | |
7007 | jpeg_load (f, img) | |
7008 | struct frame *f; | |
7009 | struct image *img; | |
7010 | { | |
7011 | #ifdef MAC_OSX | |
7012 | return image_load_quartz2d (f, img, 0); | |
7013 | #else | |
7014 | return image_load_quicktime (f, img, kQTFileTypeJPEG); | |
7015 | #endif | |
7016 | } | |
7017 | #endif /* MAC_OS */ | |
7018 | ||
7019 | #endif /* !HAVE_JPEG */ | |
7020 | ||
7021 | ||
7022 | \f | |
7023 | /*********************************************************************** | |
7024 | TIFF | |
7025 | ***********************************************************************/ | |
7026 | ||
7027 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
7028 | ||
7029 | static int tiff_image_p P_ ((Lisp_Object object)); | |
7030 | static int tiff_load P_ ((struct frame *f, struct image *img)); | |
7031 | ||
7032 | /* The symbol `tiff' identifying images of this type. */ | |
7033 | ||
7034 | Lisp_Object Qtiff; | |
7035 | ||
7036 | /* Indices of image specification fields in tiff_format, below. */ | |
7037 | ||
7038 | enum tiff_keyword_index | |
7039 | { | |
7040 | TIFF_TYPE, | |
7041 | TIFF_DATA, | |
7042 | TIFF_FILE, | |
7043 | TIFF_ASCENT, | |
7044 | TIFF_MARGIN, | |
7045 | TIFF_RELIEF, | |
7046 | TIFF_ALGORITHM, | |
7047 | TIFF_HEURISTIC_MASK, | |
7048 | TIFF_MASK, | |
7049 | TIFF_BACKGROUND, | |
7050 | TIFF_LAST | |
7051 | }; | |
7052 | ||
7053 | /* Vector of image_keyword structures describing the format | |
7054 | of valid user-defined image specifications. */ | |
7055 | ||
7056 | static struct image_keyword tiff_format[TIFF_LAST] = | |
7057 | { | |
7058 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7059 | {":data", IMAGE_STRING_VALUE, 0}, | |
7060 | {":file", IMAGE_STRING_VALUE, 0}, | |
7061 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7062 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7063 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7064 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7065 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7066 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7067 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7068 | }; | |
7069 | ||
7070 | /* Structure describing the image type `tiff'. */ | |
7071 | ||
7072 | static struct image_type tiff_type = | |
7073 | { | |
7074 | &Qtiff, | |
7075 | tiff_image_p, | |
7076 | tiff_load, | |
7077 | x_clear_image, | |
7078 | NULL | |
7079 | }; | |
7080 | ||
7081 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
7082 | ||
7083 | static int | |
7084 | tiff_image_p (object) | |
7085 | Lisp_Object object; | |
7086 | { | |
7087 | struct image_keyword fmt[TIFF_LAST]; | |
7088 | bcopy (tiff_format, fmt, sizeof fmt); | |
7089 | ||
7090 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
7091 | return 0; | |
7092 | ||
7093 | /* Must specify either the :data or :file keyword. */ | |
7094 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
7095 | } | |
7096 | ||
7097 | #endif /* HAVE_TIFF || MAC_OS */ | |
7098 | ||
7099 | #ifdef HAVE_TIFF | |
7100 | ||
7101 | #include <tiffio.h> | |
7102 | ||
7103 | #ifdef HAVE_NTGUI | |
7104 | ||
7105 | /* TIFF library details. */ | |
7106 | DEF_IMGLIB_FN (TIFFSetErrorHandler); | |
7107 | DEF_IMGLIB_FN (TIFFSetWarningHandler); | |
7108 | DEF_IMGLIB_FN (TIFFOpen); | |
7109 | DEF_IMGLIB_FN (TIFFClientOpen); | |
7110 | DEF_IMGLIB_FN (TIFFGetField); | |
7111 | DEF_IMGLIB_FN (TIFFReadRGBAImage); | |
7112 | DEF_IMGLIB_FN (TIFFClose); | |
7113 | ||
7114 | static int | |
0855eb52 | 7115 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7116 | { |
7117 | HMODULE library; | |
7118 | ||
0855eb52 | 7119 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
7120 | return 0; |
7121 | ||
7122 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
7123 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
7124 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
7125 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
7126 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
7127 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
7128 | LOAD_IMGLIB_FN (library, TIFFClose); | |
7129 | return 1; | |
7130 | } | |
7131 | ||
7132 | #else | |
7133 | ||
7134 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
7135 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
7136 | #define fn_TIFFOpen TIFFOpen | |
7137 | #define fn_TIFFClientOpen TIFFClientOpen | |
7138 | #define fn_TIFFGetField TIFFGetField | |
7139 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
7140 | #define fn_TIFFClose TIFFClose | |
7141 | ||
7142 | #endif /* HAVE_NTGUI */ | |
7143 | ||
7144 | ||
7145 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
7146 | memory source, but we have to provide a lot of extra functions. | |
7147 | Blah. | |
7148 | ||
7149 | We really only need to implement read and seek, but I am not | |
7150 | convinced that the TIFF library is smart enough not to destroy | |
7151 | itself if we only hand it the function pointers we need to | |
7152 | override. */ | |
7153 | ||
7154 | typedef struct | |
7155 | { | |
7156 | unsigned char *bytes; | |
7157 | size_t len; | |
7158 | int index; | |
7159 | } | |
7160 | tiff_memory_source; | |
7161 | ||
7162 | static size_t | |
7163 | tiff_read_from_memory (data, buf, size) | |
7164 | thandle_t data; | |
7165 | tdata_t buf; | |
7166 | tsize_t size; | |
7167 | { | |
7168 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7169 | ||
7170 | if (size > src->len - src->index) | |
7171 | return (size_t) -1; | |
7172 | bcopy (src->bytes + src->index, buf, size); | |
7173 | src->index += size; | |
7174 | return size; | |
7175 | } | |
7176 | ||
7177 | static size_t | |
7178 | tiff_write_from_memory (data, buf, size) | |
7179 | thandle_t data; | |
7180 | tdata_t buf; | |
7181 | tsize_t size; | |
7182 | { | |
7183 | return (size_t) -1; | |
7184 | } | |
7185 | ||
7186 | static toff_t | |
7187 | tiff_seek_in_memory (data, off, whence) | |
7188 | thandle_t data; | |
7189 | toff_t off; | |
7190 | int whence; | |
7191 | { | |
7192 | tiff_memory_source *src = (tiff_memory_source *) data; | |
7193 | int idx; | |
7194 | ||
7195 | switch (whence) | |
7196 | { | |
7197 | case SEEK_SET: /* Go from beginning of source. */ | |
7198 | idx = off; | |
7199 | break; | |
7200 | ||
7201 | case SEEK_END: /* Go from end of source. */ | |
7202 | idx = src->len + off; | |
7203 | break; | |
7204 | ||
7205 | case SEEK_CUR: /* Go from current position. */ | |
7206 | idx = src->index + off; | |
7207 | break; | |
7208 | ||
7209 | default: /* Invalid `whence'. */ | |
7210 | return -1; | |
7211 | } | |
7212 | ||
7213 | if (idx > src->len || idx < 0) | |
7214 | return -1; | |
7215 | ||
7216 | src->index = idx; | |
7217 | return src->index; | |
7218 | } | |
7219 | ||
7220 | static int | |
7221 | tiff_close_memory (data) | |
7222 | thandle_t data; | |
7223 | { | |
7224 | /* NOOP */ | |
7225 | return 0; | |
7226 | } | |
7227 | ||
7228 | static int | |
7229 | tiff_mmap_memory (data, pbase, psize) | |
7230 | thandle_t data; | |
7231 | tdata_t *pbase; | |
7232 | toff_t *psize; | |
7233 | { | |
7234 | /* It is already _IN_ memory. */ | |
7235 | return 0; | |
7236 | } | |
7237 | ||
7238 | static void | |
7239 | tiff_unmap_memory (data, base, size) | |
7240 | thandle_t data; | |
7241 | tdata_t base; | |
7242 | toff_t size; | |
7243 | { | |
7244 | /* We don't need to do this. */ | |
7245 | } | |
7246 | ||
7247 | static toff_t | |
7248 | tiff_size_of_memory (data) | |
7249 | thandle_t data; | |
7250 | { | |
7251 | return ((tiff_memory_source *) data)->len; | |
7252 | } | |
7253 | ||
7254 | ||
7255 | static void | |
7256 | tiff_error_handler (title, format, ap) | |
7257 | const char *title, *format; | |
7258 | va_list ap; | |
7259 | { | |
7260 | char buf[512]; | |
7261 | int len; | |
7262 | ||
7263 | len = sprintf (buf, "TIFF error: %s ", title); | |
7264 | vsprintf (buf + len, format, ap); | |
7265 | add_to_log (buf, Qnil, Qnil); | |
7266 | } | |
7267 | ||
7268 | ||
7269 | static void | |
7270 | tiff_warning_handler (title, format, ap) | |
7271 | const char *title, *format; | |
7272 | va_list ap; | |
7273 | { | |
7274 | char buf[512]; | |
7275 | int len; | |
7276 | ||
7277 | len = sprintf (buf, "TIFF warning: %s ", title); | |
7278 | vsprintf (buf + len, format, ap); | |
7279 | add_to_log (buf, Qnil, Qnil); | |
7280 | } | |
7281 | ||
7282 | ||
7283 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
7284 | successful. */ | |
7285 | ||
7286 | static int | |
7287 | tiff_load (f, img) | |
7288 | struct frame *f; | |
7289 | struct image *img; | |
7290 | { | |
7291 | Lisp_Object file, specified_file; | |
7292 | Lisp_Object specified_data; | |
7293 | TIFF *tiff; | |
7294 | int width, height, x, y; | |
7295 | uint32 *buf; | |
7296 | int rc; | |
7297 | XImagePtr ximg; | |
7298 | struct gcpro gcpro1; | |
7299 | tiff_memory_source memsrc; | |
7300 | ||
7301 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7302 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7303 | file = Qnil; | |
7304 | GCPRO1 (file); | |
7305 | ||
7306 | fn_TIFFSetErrorHandler (tiff_error_handler); | |
7307 | fn_TIFFSetWarningHandler (tiff_warning_handler); | |
7308 | ||
7309 | if (NILP (specified_data)) | |
7310 | { | |
7311 | /* Read from a file */ | |
7312 | file = x_find_image_file (specified_file); | |
7313 | if (!STRINGP (file)) | |
7314 | { | |
7315 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7316 | UNGCPRO; | |
7317 | return 0; | |
7318 | } | |
7319 | ||
2e09fef1 EZ |
7320 | /* Try to open the image file. Casting return value avoids a |
7321 | GCC warning on W32. */ | |
7322 | tiff = (TIFF *)fn_TIFFOpen (SDATA (file), "r"); | |
4ef0d4d0 KS |
7323 | if (tiff == NULL) |
7324 | { | |
7325 | image_error ("Cannot open `%s'", file, Qnil); | |
7326 | UNGCPRO; | |
7327 | return 0; | |
7328 | } | |
7329 | } | |
7330 | else | |
7331 | { | |
7332 | /* Memory source! */ | |
7333 | memsrc.bytes = SDATA (specified_data); | |
7334 | memsrc.len = SBYTES (specified_data); | |
7335 | memsrc.index = 0; | |
7336 | ||
2e09fef1 EZ |
7337 | /* Casting return value avoids a GCC warning on W32. */ |
7338 | tiff = (TIFF *)fn_TIFFClientOpen ("memory_source", "r", &memsrc, | |
7339 | (TIFFReadWriteProc) tiff_read_from_memory, | |
7340 | (TIFFReadWriteProc) tiff_write_from_memory, | |
7341 | tiff_seek_in_memory, | |
7342 | tiff_close_memory, | |
7343 | tiff_size_of_memory, | |
7344 | tiff_mmap_memory, | |
7345 | tiff_unmap_memory); | |
4ef0d4d0 KS |
7346 | |
7347 | if (!tiff) | |
7348 | { | |
7349 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
7350 | UNGCPRO; | |
7351 | return 0; | |
7352 | } | |
7353 | } | |
7354 | ||
7355 | /* Get width and height of the image, and allocate a raster buffer | |
7356 | of width x height 32-bit values. */ | |
7357 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
7358 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
7359 | |
7360 | if (!check_image_size (f, width, height)) | |
7361 | { | |
7362 | image_error ("Invalid image size", Qnil, Qnil); | |
7363 | UNGCPRO; | |
7364 | return 0; | |
7365 | } | |
7366 | ||
4ef0d4d0 KS |
7367 | buf = (uint32 *) xmalloc (width * height * sizeof *buf); |
7368 | ||
7369 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
7370 | fn_TIFFClose (tiff); | |
7371 | if (!rc) | |
7372 | { | |
7373 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
7374 | xfree (buf); | |
7375 | UNGCPRO; | |
7376 | return 0; | |
7377 | } | |
7378 | ||
7379 | /* Create the X image and pixmap. */ | |
7380 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7381 | { | |
7382 | xfree (buf); | |
7383 | UNGCPRO; | |
7384 | return 0; | |
7385 | } | |
7386 | ||
7387 | /* Initialize the color table. */ | |
7388 | init_color_table (); | |
7389 | ||
7390 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
7391 | for (y = 0; y < height; ++y) | |
7392 | { | |
7393 | uint32 *row = buf + y * width; | |
7394 | ||
7395 | for (x = 0; x < width; ++x) | |
7396 | { | |
7397 | uint32 abgr = row[x]; | |
7398 | int r = TIFFGetR (abgr) << 8; | |
7399 | int g = TIFFGetG (abgr) << 8; | |
7400 | int b = TIFFGetB (abgr) << 8; | |
7401 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
7402 | } | |
7403 | } | |
7404 | ||
7405 | #ifdef COLOR_TABLE_SUPPORT | |
7406 | /* Remember the colors allocated for the image. Free the color table. */ | |
7407 | img->colors = colors_in_color_table (&img->ncolors); | |
7408 | free_color_table (); | |
7409 | #endif /* COLOR_TABLE_SUPPORT */ | |
7410 | ||
7411 | img->width = width; | |
7412 | img->height = height; | |
7413 | ||
7414 | /* Maybe fill in the background field while we have ximg handy. */ | |
7415 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7416 | /* Casting avoids a GCC warning on W32. */ |
7417 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7418 | |
7419 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7420 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7421 | x_destroy_x_image (ximg); | |
7422 | xfree (buf); | |
7423 | ||
7424 | UNGCPRO; | |
7425 | return 1; | |
7426 | } | |
7427 | ||
7428 | #else /* HAVE_TIFF */ | |
7429 | ||
7430 | #ifdef MAC_OS | |
7431 | static int | |
7432 | tiff_load (f, img) | |
7433 | struct frame *f; | |
7434 | struct image *img; | |
7435 | { | |
7436 | return image_load_quicktime (f, img, kQTFileTypeTIFF); | |
7437 | } | |
7438 | #endif /* MAC_OS */ | |
7439 | ||
7440 | #endif /* !HAVE_TIFF */ | |
7441 | ||
7442 | ||
7443 | \f | |
7444 | /*********************************************************************** | |
7445 | GIF | |
7446 | ***********************************************************************/ | |
7447 | ||
7448 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
7449 | ||
7450 | static int gif_image_p P_ ((Lisp_Object object)); | |
7451 | static int gif_load P_ ((struct frame *f, struct image *img)); | |
7452 | ||
7453 | /* The symbol `gif' identifying images of this type. */ | |
7454 | ||
7455 | Lisp_Object Qgif; | |
7456 | ||
7457 | /* Indices of image specification fields in gif_format, below. */ | |
7458 | ||
7459 | enum gif_keyword_index | |
7460 | { | |
7461 | GIF_TYPE, | |
7462 | GIF_DATA, | |
7463 | GIF_FILE, | |
7464 | GIF_ASCENT, | |
7465 | GIF_MARGIN, | |
7466 | GIF_RELIEF, | |
7467 | GIF_ALGORITHM, | |
7468 | GIF_HEURISTIC_MASK, | |
7469 | GIF_MASK, | |
7470 | GIF_IMAGE, | |
7471 | GIF_BACKGROUND, | |
7472 | GIF_LAST | |
7473 | }; | |
7474 | ||
7475 | /* Vector of image_keyword structures describing the format | |
7476 | of valid user-defined image specifications. */ | |
7477 | ||
7478 | static struct image_keyword gif_format[GIF_LAST] = | |
7479 | { | |
7480 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7481 | {":data", IMAGE_STRING_VALUE, 0}, | |
7482 | {":file", IMAGE_STRING_VALUE, 0}, | |
7483 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7484 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7485 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7486 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7487 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7488 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7489 | {":image", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, | |
7490 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7491 | }; | |
7492 | ||
7493 | /* Structure describing the image type `gif'. */ | |
7494 | ||
7495 | static struct image_type gif_type = | |
7496 | { | |
7497 | &Qgif, | |
7498 | gif_image_p, | |
7499 | gif_load, | |
7500 | x_clear_image, | |
7501 | NULL | |
7502 | }; | |
7503 | ||
7504 | /* Return non-zero if OBJECT is a valid GIF image specification. */ | |
7505 | ||
7506 | static int | |
7507 | gif_image_p (object) | |
7508 | Lisp_Object object; | |
7509 | { | |
7510 | struct image_keyword fmt[GIF_LAST]; | |
7511 | bcopy (gif_format, fmt, sizeof fmt); | |
7512 | ||
7513 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7514 | return 0; | |
7515 | ||
7516 | /* Must specify either the :data or :file keyword. */ | |
7517 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7518 | } | |
7519 | ||
7520 | #endif /* HAVE_GIF || MAC_OS */ | |
7521 | ||
7522 | #ifdef HAVE_GIF | |
7523 | ||
7524 | #if defined (HAVE_NTGUI) || defined (MAC_OS) | |
2e09fef1 EZ |
7525 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7526 | Undefine before redefining to avoid a preprocessor warning. */ | |
7527 | #ifdef DrawText | |
7528 | #undef DrawText | |
7529 | #endif | |
4ef0d4d0 KS |
7530 | /* avoid conflict with QuickdrawText.h */ |
7531 | #define DrawText gif_DrawText | |
7532 | #include <gif_lib.h> | |
7533 | #undef DrawText | |
7534 | ||
7535 | #else /* HAVE_NTGUI || MAC_OS */ | |
7536 | ||
7537 | #include <gif_lib.h> | |
7538 | ||
7539 | #endif /* HAVE_NTGUI || MAC_OS */ | |
7540 | ||
7541 | ||
7542 | #ifdef HAVE_NTGUI | |
7543 | ||
7544 | /* GIF library details. */ | |
7545 | DEF_IMGLIB_FN (DGifCloseFile); | |
7546 | DEF_IMGLIB_FN (DGifSlurp); | |
7547 | DEF_IMGLIB_FN (DGifOpen); | |
7548 | DEF_IMGLIB_FN (DGifOpenFileName); | |
7549 | ||
7550 | static int | |
0855eb52 | 7551 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7552 | { |
7553 | HMODULE library; | |
7554 | ||
0855eb52 | 7555 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7556 | return 0; |
7557 | ||
7558 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7559 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7560 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7561 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7562 | return 1; | |
7563 | } | |
7564 | ||
7565 | #else | |
7566 | ||
7567 | #define fn_DGifCloseFile DGifCloseFile | |
7568 | #define fn_DGifSlurp DGifSlurp | |
7569 | #define fn_DGifOpen DGifOpen | |
7570 | #define fn_DGifOpenFileName DGifOpenFileName | |
7571 | ||
7572 | #endif /* HAVE_NTGUI */ | |
7573 | ||
7574 | /* Reading a GIF image from memory | |
7575 | Based on the PNG memory stuff to a certain extent. */ | |
7576 | ||
7577 | typedef struct | |
7578 | { | |
7579 | unsigned char *bytes; | |
7580 | size_t len; | |
7581 | int index; | |
7582 | } | |
7583 | gif_memory_source; | |
7584 | ||
7585 | /* Make the current memory source available to gif_read_from_memory. | |
7586 | It's done this way because not all versions of libungif support | |
7587 | a UserData field in the GifFileType structure. */ | |
7588 | static gif_memory_source *current_gif_memory_src; | |
7589 | ||
7590 | static int | |
7591 | gif_read_from_memory (file, buf, len) | |
7592 | GifFileType *file; | |
7593 | GifByteType *buf; | |
7594 | int len; | |
7595 | { | |
7596 | gif_memory_source *src = current_gif_memory_src; | |
7597 | ||
7598 | if (len > src->len - src->index) | |
7599 | return -1; | |
7600 | ||
7601 | bcopy (src->bytes + src->index, buf, len); | |
7602 | src->index += len; | |
7603 | return len; | |
7604 | } | |
7605 | ||
7606 | ||
7607 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7608 | successful. */ | |
7609 | ||
7610 | static int | |
7611 | gif_load (f, img) | |
7612 | struct frame *f; | |
7613 | struct image *img; | |
7614 | { | |
7615 | Lisp_Object file, specified_file; | |
7616 | Lisp_Object specified_data; | |
7617 | int rc, width, height, x, y, i; | |
7618 | XImagePtr ximg; | |
7619 | ColorMapObject *gif_color_map; | |
7620 | unsigned long pixel_colors[256]; | |
7621 | GifFileType *gif; | |
7622 | struct gcpro gcpro1; | |
7623 | Lisp_Object image; | |
7624 | int ino, image_left, image_top, image_width, image_height; | |
7625 | gif_memory_source memsrc; | |
7626 | unsigned char *raster; | |
7627 | ||
7628 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7629 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7630 | file = Qnil; | |
7631 | GCPRO1 (file); | |
7632 | ||
7633 | if (NILP (specified_data)) | |
7634 | { | |
7635 | file = x_find_image_file (specified_file); | |
7636 | if (!STRINGP (file)) | |
7637 | { | |
7638 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7639 | UNGCPRO; | |
7640 | return 0; | |
7641 | } | |
7642 | ||
2e09fef1 EZ |
7643 | /* Open the GIF file. Casting return value avoids a GCC warning |
7644 | on W32. */ | |
7645 | gif = (GifFileType *)fn_DGifOpenFileName (SDATA (file)); | |
4ef0d4d0 KS |
7646 | if (gif == NULL) |
7647 | { | |
7648 | image_error ("Cannot open `%s'", file, Qnil); | |
7649 | UNGCPRO; | |
7650 | return 0; | |
7651 | } | |
7652 | } | |
7653 | else | |
7654 | { | |
7655 | /* Read from memory! */ | |
7656 | current_gif_memory_src = &memsrc; | |
7657 | memsrc.bytes = SDATA (specified_data); | |
7658 | memsrc.len = SBYTES (specified_data); | |
7659 | memsrc.index = 0; | |
7660 | ||
2e09fef1 EZ |
7661 | /* Casting return value avoids a GCC warning on W32. */ |
7662 | gif = (GifFileType *)fn_DGifOpen(&memsrc, gif_read_from_memory); | |
4ef0d4d0 KS |
7663 | if (!gif) |
7664 | { | |
7665 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
7666 | UNGCPRO; | |
7667 | return 0; | |
7668 | } | |
7669 | } | |
7670 | ||
f1f25b99 CY |
7671 | /* Before reading entire contents, check the declared image size. */ |
7672 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7673 | { | |
7674 | image_error ("Invalid image size", Qnil, Qnil); | |
7675 | fn_DGifCloseFile (gif); | |
7676 | UNGCPRO; | |
7677 | return 0; | |
7678 | } | |
7679 | ||
4ef0d4d0 KS |
7680 | /* Read entire contents. */ |
7681 | rc = fn_DGifSlurp (gif); | |
7682 | if (rc == GIF_ERROR) | |
7683 | { | |
7684 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7685 | fn_DGifCloseFile (gif); | |
7686 | UNGCPRO; | |
7687 | return 0; | |
7688 | } | |
7689 | ||
7690 | image = image_spec_value (img->spec, QCindex, NULL); | |
7691 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7692 | if (ino >= gif->ImageCount) | |
7693 | { | |
7694 | image_error ("Invalid image number `%s' in image `%s'", | |
7695 | image, img->spec); | |
7696 | fn_DGifCloseFile (gif); | |
7697 | UNGCPRO; | |
7698 | return 0; | |
7699 | } | |
7700 | ||
0f4aca46 KS |
7701 | image_top = gif->SavedImages[ino].ImageDesc.Top; |
7702 | image_left = gif->SavedImages[ino].ImageDesc.Left; | |
7703 | image_width = gif->SavedImages[ino].ImageDesc.Width; | |
7704 | image_height = gif->SavedImages[ino].ImageDesc.Height; | |
7705 | ||
7706 | width = img->width = max (gif->SWidth, | |
7707 | max (gif->Image.Left + gif->Image.Width, | |
7708 | image_left + image_width)); | |
7709 | height = img->height = max (gif->SHeight, | |
7710 | max (gif->Image.Top + gif->Image.Height, | |
7711 | image_top + image_height)); | |
4ef0d4d0 | 7712 | |
f1f25b99 CY |
7713 | if (!check_image_size (f, width, height)) |
7714 | { | |
7715 | image_error ("Invalid image size", Qnil, Qnil); | |
7716 | fn_DGifCloseFile (gif); | |
7717 | UNGCPRO; | |
7718 | return 0; | |
7719 | } | |
7720 | ||
4ef0d4d0 KS |
7721 | /* Create the X image and pixmap. */ |
7722 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7723 | { | |
7724 | fn_DGifCloseFile (gif); | |
7725 | UNGCPRO; | |
7726 | return 0; | |
7727 | } | |
7728 | ||
7729 | /* Allocate colors. */ | |
7730 | gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap; | |
7731 | if (!gif_color_map) | |
7732 | gif_color_map = gif->SColorMap; | |
7733 | init_color_table (); | |
7734 | bzero (pixel_colors, sizeof pixel_colors); | |
7735 | ||
7736 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
7737 | { | |
7738 | int r = gif_color_map->Colors[i].Red << 8; | |
7739 | int g = gif_color_map->Colors[i].Green << 8; | |
7740 | int b = gif_color_map->Colors[i].Blue << 8; | |
7741 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7742 | } | |
7743 | ||
7744 | #ifdef COLOR_TABLE_SUPPORT | |
7745 | img->colors = colors_in_color_table (&img->ncolors); | |
7746 | free_color_table (); | |
7747 | #endif /* COLOR_TABLE_SUPPORT */ | |
7748 | ||
7749 | /* Clear the part of the screen image that are not covered by | |
7750 | the image from the GIF file. Full animated GIF support | |
7751 | requires more than can be done here (see the gif89 spec, | |
7752 | disposal methods). Let's simply assume that the part | |
7753 | not covered by a sub-image is in the frame's background color. */ | |
4ef0d4d0 KS |
7754 | for (y = 0; y < image_top; ++y) |
7755 | for (x = 0; x < width; ++x) | |
7756 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7757 | ||
7758 | for (y = image_top + image_height; y < height; ++y) | |
7759 | for (x = 0; x < width; ++x) | |
7760 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7761 | ||
7762 | for (y = image_top; y < image_top + image_height; ++y) | |
7763 | { | |
7764 | for (x = 0; x < image_left; ++x) | |
7765 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7766 | for (x = image_left + image_width; x < width; ++x) | |
7767 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7768 | } | |
7769 | ||
7770 | /* Read the GIF image into the X image. We use a local variable | |
7771 | `raster' here because RasterBits below is a char *, and invites | |
7772 | problems with bytes >= 0x80. */ | |
7773 | raster = (unsigned char *) gif->SavedImages[ino].RasterBits; | |
7774 | ||
7775 | if (gif->SavedImages[ino].ImageDesc.Interlace) | |
7776 | { | |
7777 | static int interlace_start[] = {0, 4, 2, 1}; | |
7778 | static int interlace_increment[] = {8, 8, 4, 2}; | |
7779 | int pass; | |
7780 | int row = interlace_start[0]; | |
7781 | ||
7782 | pass = 0; | |
7783 | ||
7784 | for (y = 0; y < image_height; y++) | |
7785 | { | |
7786 | if (row >= image_height) | |
7787 | { | |
7788 | row = interlace_start[++pass]; | |
7789 | while (row >= image_height) | |
7790 | row = interlace_start[++pass]; | |
7791 | } | |
7792 | ||
7793 | for (x = 0; x < image_width; x++) | |
7794 | { | |
7795 | int i = raster[(y * image_width) + x]; | |
7796 | XPutPixel (ximg, x + image_left, row + image_top, | |
7797 | pixel_colors[i]); | |
7798 | } | |
7799 | ||
7800 | row += interlace_increment[pass]; | |
7801 | } | |
7802 | } | |
7803 | else | |
7804 | { | |
7805 | for (y = 0; y < image_height; ++y) | |
7806 | for (x = 0; x < image_width; ++x) | |
7807 | { | |
7808 | int i = raster[y * image_width + x]; | |
7809 | XPutPixel (ximg, x + image_left, y + image_top, pixel_colors[i]); | |
7810 | } | |
7811 | } | |
7812 | ||
7813 | fn_DGifCloseFile (gif); | |
7814 | ||
7815 | /* Maybe fill in the background field while we have ximg handy. */ | |
7816 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7817 | /* Casting avoids a GCC warning. */ |
7818 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7819 | |
7820 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7821 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7822 | x_destroy_x_image (ximg); | |
7823 | ||
7824 | UNGCPRO; | |
7825 | return 1; | |
7826 | } | |
7827 | ||
2e09fef1 | 7828 | #else /* !HAVE_GIF */ |
4ef0d4d0 KS |
7829 | |
7830 | #ifdef MAC_OS | |
7831 | static int | |
7832 | gif_load (f, img) | |
7833 | struct frame *f; | |
7834 | struct image *img; | |
7835 | { | |
7836 | Lisp_Object specified_file, file; | |
7837 | Lisp_Object specified_data; | |
7838 | OSErr err; | |
7839 | Boolean graphic_p, movie_p, prefer_graphic_p; | |
7840 | Handle dh = NULL; | |
7841 | Movie movie = NULL; | |
7842 | Lisp_Object image; | |
7843 | Track track = NULL; | |
7844 | Media media = NULL; | |
7845 | long nsamples; | |
7846 | Rect rect; | |
7847 | Lisp_Object specified_bg; | |
7848 | XColor color; | |
7849 | RGBColor bg_color; | |
7850 | int width, height; | |
7851 | XImagePtr ximg; | |
7852 | TimeValue time; | |
4ef0d4d0 | 7853 | int ino; |
2a316a84 ST |
7854 | CGrafPtr old_port; |
7855 | GDHandle old_gdh; | |
4ef0d4d0 KS |
7856 | |
7857 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7858 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
7859 | ||
dac5344b YM |
7860 | /* Animated gifs use QuickTime Movie Toolbox. So initialize it here. */ |
7861 | EnterMovies (); | |
7862 | ||
4ef0d4d0 KS |
7863 | if (NILP (specified_data)) |
7864 | { | |
7865 | /* Read from a file */ | |
7866 | FSSpec fss; | |
7867 | short refnum; | |
7868 | ||
7869 | err = find_image_fsspec (specified_file, &file, &fss); | |
7870 | if (err != noErr) | |
7871 | { | |
7872 | if (err == fnfErr) | |
7873 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7874 | else | |
7875 | goto open_error; | |
7876 | } | |
7877 | ||
7878 | err = CanQuickTimeOpenFile (&fss, kQTFileTypeGIF, 0, | |
7879 | &graphic_p, &movie_p, &prefer_graphic_p, 0); | |
7880 | if (err != noErr) | |
7881 | goto open_error; | |
7882 | ||
7883 | if (!graphic_p && !movie_p) | |
7884 | goto open_error; | |
7885 | if (prefer_graphic_p) | |
7886 | return image_load_qt_1 (f, img, kQTFileTypeGIF, &fss, NULL); | |
7887 | err = OpenMovieFile (&fss, &refnum, fsRdPerm); | |
7888 | if (err != noErr) | |
7889 | goto open_error; | |
7890 | err = NewMovieFromFile (&movie, refnum, NULL, NULL, 0, NULL); | |
7891 | CloseMovieFile (refnum); | |
7892 | if (err != noErr) | |
7893 | { | |
7894 | image_error ("Error reading `%s'", file, Qnil); | |
7895 | return 0; | |
7896 | } | |
7897 | } | |
7898 | else | |
7899 | { | |
7900 | /* Memory source! */ | |
7901 | Handle dref = NULL; | |
7902 | long file_type_atom[3]; | |
7903 | ||
7904 | err = PtrToHand (SDATA (specified_data), &dh, SBYTES (specified_data)); | |
7905 | if (err != noErr) | |
7906 | { | |
7907 | image_error ("Cannot allocate data handle for `%s'", | |
7908 | img->spec, Qnil); | |
7909 | goto error; | |
7910 | } | |
7911 | ||
7912 | file_type_atom[0] = EndianU32_NtoB (sizeof (long) * 3); | |
7913 | file_type_atom[1] = EndianU32_NtoB (kDataRefExtensionMacOSFileType); | |
7914 | file_type_atom[2] = EndianU32_NtoB (kQTFileTypeGIF); | |
7915 | err = PtrToHand (&dh, &dref, sizeof (Handle)); | |
7916 | if (err == noErr) | |
7917 | /* no file name */ | |
7918 | err = PtrAndHand ("\p", dref, 1); | |
7919 | if (err == noErr) | |
7920 | err = PtrAndHand (file_type_atom, dref, sizeof (long) * 3); | |
7921 | if (err != noErr) | |
7922 | { | |
7923 | image_error ("Cannot allocate handle data ref for `%s'", img->spec, Qnil); | |
7924 | goto error; | |
7925 | } | |
7926 | err = CanQuickTimeOpenDataRef (dref, HandleDataHandlerSubType, &graphic_p, | |
7927 | &movie_p, &prefer_graphic_p, 0); | |
7928 | if (err != noErr) | |
7929 | goto open_error; | |
7930 | ||
7931 | if (!graphic_p && !movie_p) | |
7932 | goto open_error; | |
7933 | if (prefer_graphic_p) | |
7934 | { | |
7935 | int success_p; | |
7936 | ||
7937 | DisposeHandle (dref); | |
7938 | success_p = image_load_qt_1 (f, img, kQTFileTypeGIF, NULL, dh); | |
7939 | DisposeHandle (dh); | |
7940 | return success_p; | |
7941 | } | |
7942 | err = NewMovieFromDataRef (&movie, 0, NULL, dref, | |
7943 | HandleDataHandlerSubType); | |
7944 | DisposeHandle (dref); | |
7945 | if (err != noErr) | |
7946 | goto open_error; | |
7947 | } | |
7948 | ||
7949 | image = image_spec_value (img->spec, QCindex, NULL); | |
7950 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7951 | track = GetMovieIndTrack (movie, 1); | |
7952 | media = GetTrackMedia (track); | |
7953 | nsamples = GetMediaSampleCount (media); | |
7954 | if (ino >= nsamples) | |
7955 | { | |
7956 | image_error ("Invalid image number `%s' in image `%s'", | |
7957 | image, img->spec); | |
7958 | goto error; | |
7959 | } | |
7960 | ||
7961 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
7962 | if (!STRINGP (specified_bg) || | |
7963 | !mac_defined_color (f, SDATA (specified_bg), &color, 0)) | |
7964 | { | |
7965 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
7966 | color.red = RED16_FROM_ULONG (color.pixel); | |
7967 | color.green = GREEN16_FROM_ULONG (color.pixel); | |
7968 | color.blue = BLUE16_FROM_ULONG (color.pixel); | |
7969 | } | |
7970 | GetMovieBox (movie, &rect); | |
7971 | width = img->width = rect.right - rect.left; | |
7972 | height = img->height = rect.bottom - rect.top; | |
7973 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7974 | goto error; | |
7975 | ||
2a316a84 | 7976 | GetGWorld (&old_port, &old_gdh); |
4ef0d4d0 KS |
7977 | SetGWorld (ximg, NULL); |
7978 | bg_color.red = color.red; | |
7979 | bg_color.green = color.green; | |
7980 | bg_color.blue = color.blue; | |
7981 | RGBBackColor (&bg_color); | |
2a316a84 | 7982 | SetGWorld (old_port, old_gdh); |
e0e30823 | 7983 | SetMovieActive (movie, 1); |
4ef0d4d0 KS |
7984 | SetMovieGWorld (movie, ximg, NULL); |
7985 | SampleNumToMediaTime (media, ino + 1, &time, NULL); | |
7986 | SetMovieTimeValue (movie, time); | |
7987 | MoviesTask (movie, 0L); | |
7988 | DisposeTrackMedia (media); | |
7989 | DisposeMovieTrack (track); | |
7990 | DisposeMovie (movie); | |
7991 | if (dh) | |
7992 | DisposeHandle (dh); | |
7993 | /* Maybe fill in the background field while we have ximg handy. */ | |
7994 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
7995 | IMAGE_BACKGROUND (img, f, ximg); | |
7996 | ||
7997 | /* Put the image into the pixmap. */ | |
7998 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7999 | x_destroy_x_image (ximg); | |
8000 | return 1; | |
8001 | ||
8002 | open_error: | |
8003 | image_error ("Cannot open `%s'", file, Qnil); | |
8004 | error: | |
8005 | if (media) | |
8006 | DisposeTrackMedia (media); | |
8007 | if (track) | |
8008 | DisposeMovieTrack (track); | |
8009 | if (movie) | |
8010 | DisposeMovie (movie); | |
8011 | if (dh) | |
8012 | DisposeHandle (dh); | |
8013 | return 0; | |
8014 | } | |
8015 | #endif /* MAC_OS */ | |
8016 | ||
8017 | #endif /* HAVE_GIF */ | |
8018 | ||
8019 | ||
8020 | \f | |
8021 | /*********************************************************************** | |
8022 | Ghostscript | |
8023 | ***********************************************************************/ | |
8024 | ||
8025 | #ifdef HAVE_X_WINDOWS | |
8026 | #define HAVE_GHOSTSCRIPT 1 | |
8027 | #endif /* HAVE_X_WINDOWS */ | |
8028 | ||
8029 | /* The symbol `postscript' identifying images of this type. */ | |
8030 | ||
8031 | Lisp_Object Qpostscript; | |
8032 | ||
8033 | #ifdef HAVE_GHOSTSCRIPT | |
8034 | ||
8035 | static int gs_image_p P_ ((Lisp_Object object)); | |
8036 | static int gs_load P_ ((struct frame *f, struct image *img)); | |
8037 | static void gs_clear_image P_ ((struct frame *f, struct image *img)); | |
8038 | ||
8039 | /* Keyword symbols. */ | |
8040 | ||
8041 | Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; | |
8042 | ||
8043 | /* Indices of image specification fields in gs_format, below. */ | |
8044 | ||
8045 | enum gs_keyword_index | |
8046 | { | |
8047 | GS_TYPE, | |
8048 | GS_PT_WIDTH, | |
8049 | GS_PT_HEIGHT, | |
8050 | GS_FILE, | |
8051 | GS_LOADER, | |
8052 | GS_BOUNDING_BOX, | |
8053 | GS_ASCENT, | |
8054 | GS_MARGIN, | |
8055 | GS_RELIEF, | |
8056 | GS_ALGORITHM, | |
8057 | GS_HEURISTIC_MASK, | |
8058 | GS_MASK, | |
8059 | GS_BACKGROUND, | |
8060 | GS_LAST | |
8061 | }; | |
8062 | ||
8063 | /* Vector of image_keyword structures describing the format | |
8064 | of valid user-defined image specifications. */ | |
8065 | ||
8066 | static struct image_keyword gs_format[GS_LAST] = | |
8067 | { | |
8068 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8069 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8070 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8071 | {":file", IMAGE_STRING_VALUE, 1}, | |
8072 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8073 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8074 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8075 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8076 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8077 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8078 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8079 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8080 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8081 | }; | |
8082 | ||
8083 | /* Structure describing the image type `ghostscript'. */ | |
8084 | ||
8085 | static struct image_type gs_type = | |
8086 | { | |
8087 | &Qpostscript, | |
8088 | gs_image_p, | |
8089 | gs_load, | |
8090 | gs_clear_image, | |
8091 | NULL | |
8092 | }; | |
8093 | ||
8094 | ||
8095 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8096 | ||
8097 | static void | |
8098 | gs_clear_image (f, img) | |
8099 | struct frame *f; | |
8100 | struct image *img; | |
8101 | { | |
8102 | /* IMG->data.ptr_val may contain a recorded colormap. */ | |
8103 | xfree (img->data.ptr_val); | |
8104 | x_clear_image (f, img); | |
8105 | } | |
8106 | ||
8107 | ||
8108 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8109 | specification. */ | |
8110 | ||
8111 | static int | |
8112 | gs_image_p (object) | |
8113 | Lisp_Object object; | |
8114 | { | |
8115 | struct image_keyword fmt[GS_LAST]; | |
8116 | Lisp_Object tem; | |
8117 | int i; | |
8118 | ||
8119 | bcopy (gs_format, fmt, sizeof fmt); | |
8120 | ||
8121 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8122 | return 0; | |
8123 | ||
8124 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8125 | tem = fmt[GS_BOUNDING_BOX].value; | |
8126 | if (CONSP (tem)) | |
8127 | { | |
8128 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8129 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8130 | return 0; | |
8131 | if (!NILP (tem)) | |
8132 | return 0; | |
8133 | } | |
8134 | else if (VECTORP (tem)) | |
8135 | { | |
8136 | if (XVECTOR (tem)->size != 4) | |
8137 | return 0; | |
8138 | for (i = 0; i < 4; ++i) | |
8139 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8140 | return 0; | |
8141 | } | |
8142 | else | |
8143 | return 0; | |
8144 | ||
8145 | return 1; | |
8146 | } | |
8147 | ||
8148 | ||
8149 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8150 | if successful. */ | |
8151 | ||
8152 | static int | |
8153 | gs_load (f, img) | |
8154 | struct frame *f; | |
8155 | struct image *img; | |
8156 | { | |
8157 | char buffer[100]; | |
8158 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; | |
8159 | struct gcpro gcpro1, gcpro2; | |
8160 | Lisp_Object frame; | |
8161 | double in_width, in_height; | |
8162 | Lisp_Object pixel_colors = Qnil; | |
8163 | ||
8164 | /* Compute pixel size of pixmap needed from the given size in the | |
8165 | image specification. Sizes in the specification are in pt. 1 pt | |
8166 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8167 | info. */ | |
8168 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
8169 | in_width = XFASTINT (pt_width) / 72.0; | |
8170 | img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx; | |
8171 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); | |
8172 | in_height = XFASTINT (pt_height) / 72.0; | |
8173 | img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy; | |
8174 | ||
f1f25b99 CY |
8175 | if (!check_image_size (f, img->width, img->height)) |
8176 | { | |
8177 | image_error ("Invalid image size", Qnil, Qnil); | |
8178 | return 0; | |
8179 | } | |
8180 | ||
4ef0d4d0 KS |
8181 | /* Create the pixmap. */ |
8182 | xassert (img->pixmap == NO_PIXMAP); | |
8183 | ||
8184 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8185 | BLOCK_INPUT; | |
8186 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8187 | img->width, img->height, | |
8188 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8189 | UNBLOCK_INPUT; | |
8190 | ||
8191 | if (!img->pixmap) | |
8192 | { | |
8193 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8194 | return 0; | |
8195 | } | |
8196 | ||
8197 | /* Call the loader to fill the pixmap. It returns a process object | |
8198 | if successful. We do not record_unwind_protect here because | |
8199 | other places in redisplay like calling window scroll functions | |
8200 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
8201 | GCPRO2 (window_and_pixmap_id, pixel_colors); | |
8202 | ||
8203 | sprintf (buffer, "%lu %lu", | |
8204 | (unsigned long) FRAME_X_WINDOW (f), | |
8205 | (unsigned long) img->pixmap); | |
8206 | window_and_pixmap_id = build_string (buffer); | |
8207 | ||
8208 | sprintf (buffer, "%lu %lu", | |
8209 | FRAME_FOREGROUND_PIXEL (f), | |
8210 | FRAME_BACKGROUND_PIXEL (f)); | |
8211 | pixel_colors = build_string (buffer); | |
8212 | ||
8213 | XSETFRAME (frame, f); | |
8214 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8215 | if (NILP (loader)) | |
8216 | loader = intern ("gs-load-image"); | |
8217 | ||
8218 | img->data.lisp_val = call6 (loader, frame, img->spec, | |
8219 | make_number (img->width), | |
8220 | make_number (img->height), | |
8221 | window_and_pixmap_id, | |
8222 | pixel_colors); | |
8223 | UNGCPRO; | |
8224 | return PROCESSP (img->data.lisp_val); | |
8225 | } | |
8226 | ||
8227 | ||
8228 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8229 | frame F. Called from XTread_socket when receiving an event | |
8230 | telling Emacs that Ghostscript has finished drawing. */ | |
8231 | ||
8232 | void | |
8233 | x_kill_gs_process (pixmap, f) | |
8234 | Pixmap pixmap; | |
8235 | struct frame *f; | |
8236 | { | |
8237 | struct image_cache *c = FRAME_X_IMAGE_CACHE (f); | |
8238 | int class, i; | |
8239 | struct image *img; | |
8240 | ||
8241 | /* Find the image containing PIXMAP. */ | |
8242 | for (i = 0; i < c->used; ++i) | |
8243 | if (c->images[i]->pixmap == pixmap) | |
8244 | break; | |
8245 | ||
8246 | /* Should someone in between have cleared the image cache, for | |
8247 | instance, give up. */ | |
8248 | if (i == c->used) | |
8249 | return; | |
8250 | ||
8251 | /* Kill the GS process. We should have found PIXMAP in the image | |
8252 | cache and its image should contain a process object. */ | |
8253 | img = c->images[i]; | |
8254 | xassert (PROCESSP (img->data.lisp_val)); | |
8255 | Fkill_process (img->data.lisp_val, Qnil); | |
8256 | img->data.lisp_val = Qnil; | |
8257 | ||
8258 | #if defined (HAVE_X_WINDOWS) | |
8259 | ||
8260 | /* On displays with a mutable colormap, figure out the colors | |
8261 | allocated for the image by looking at the pixels of an XImage for | |
8262 | img->pixmap. */ | |
8263 | class = FRAME_X_VISUAL (f)->class; | |
8264 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8265 | { | |
8266 | XImagePtr ximg; | |
8267 | ||
8268 | BLOCK_INPUT; | |
8269 | ||
8270 | /* Try to get an XImage for img->pixmep. */ | |
8271 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8272 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8273 | if (ximg) | |
8274 | { | |
8275 | int x, y; | |
8276 | ||
8277 | /* Initialize the color table. */ | |
8278 | init_color_table (); | |
8279 | ||
8280 | /* For each pixel of the image, look its color up in the | |
8281 | color table. After having done so, the color table will | |
8282 | contain an entry for each color used by the image. */ | |
8283 | for (y = 0; y < img->height; ++y) | |
8284 | for (x = 0; x < img->width; ++x) | |
8285 | { | |
8286 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8287 | lookup_pixel_color (f, pixel); | |
8288 | } | |
8289 | ||
8290 | /* Record colors in the image. Free color table and XImage. */ | |
8291 | #ifdef COLOR_TABLE_SUPPORT | |
8292 | img->colors = colors_in_color_table (&img->ncolors); | |
8293 | free_color_table (); | |
8294 | #endif | |
8295 | XDestroyImage (ximg); | |
8296 | ||
8297 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8298 | here, we get a BadAccess later in x_clear_image when | |
8299 | freeing the colors. */ | |
8300 | /* We have allocated colors once, but Ghostscript has also | |
8301 | allocated colors on behalf of us. So, to get the | |
8302 | reference counts right, free them once. */ | |
8303 | if (img->ncolors) | |
8304 | x_free_colors (f, img->colors, img->ncolors); | |
8305 | #endif | |
8306 | } | |
8307 | else | |
8308 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8309 | img->spec, Qnil); | |
8310 | ||
8311 | UNBLOCK_INPUT; | |
8312 | } | |
8313 | #endif /* HAVE_X_WINDOWS */ | |
8314 | ||
8315 | /* Now that we have the pixmap, compute mask and transform the | |
8316 | image if requested. */ | |
8317 | BLOCK_INPUT; | |
8318 | postprocess_image (f, img); | |
8319 | UNBLOCK_INPUT; | |
8320 | } | |
8321 | ||
8322 | #endif /* HAVE_GHOSTSCRIPT */ | |
8323 | ||
8324 | \f | |
8325 | /*********************************************************************** | |
8326 | Tests | |
8327 | ***********************************************************************/ | |
8328 | ||
8329 | #if GLYPH_DEBUG | |
8330 | ||
8331 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, | |
8332 | doc: /* Value is non-nil if SPEC is a valid image specification. */) | |
8333 | (spec) | |
8334 | Lisp_Object spec; | |
8335 | { | |
8336 | return valid_image_p (spec) ? Qt : Qnil; | |
8337 | } | |
8338 | ||
8339 | ||
8340 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") | |
8341 | (spec) | |
8342 | Lisp_Object spec; | |
8343 | { | |
8344 | int id = -1; | |
8345 | ||
8346 | if (valid_image_p (spec)) | |
8347 | id = lookup_image (SELECTED_FRAME (), spec); | |
8348 | ||
8349 | debug_print (spec); | |
8350 | return make_number (id); | |
8351 | } | |
8352 | ||
8353 | #endif /* GLYPH_DEBUG != 0 */ | |
8354 | ||
8355 | ||
8356 | /*********************************************************************** | |
8357 | Initialization | |
8358 | ***********************************************************************/ | |
8359 | ||
0855eb52 JB |
8360 | #ifdef HAVE_NTGUI |
8361 | /* Image types that rely on external libraries are loaded dynamically | |
8362 | if the library is available. */ | |
adac86db | 8363 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8364 | define_image_type (image_type, init_lib_fn (libraries)) |
8365 | #else | |
adac86db | 8366 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8367 | define_image_type (image_type, 1) |
0855eb52 JB |
8368 | #endif /* HAVE_NTGUI */ |
8369 | ||
8370 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8371 | doc: /* Initialize image library implementing image type TYPE. | |
8372 | Return non-nil if TYPE is a supported image type. | |
8373 | ||
8374 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8375 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
adac86db | 8376 | of `image-library-alist', which see). */) |
0855eb52 | 8377 | (type, libraries) |
adac86db | 8378 | Lisp_Object type, libraries; |
0855eb52 JB |
8379 | { |
8380 | Lisp_Object tested; | |
8381 | ||
8382 | /* Don't try to reload the library. */ | |
8383 | tested = Fassq (type, Vimage_type_cache); | |
8384 | if (CONSP (tested)) | |
8385 | return XCDR (tested); | |
8386 | ||
8387 | #if defined (HAVE_XPM) || defined (MAC_OS) | |
8388 | if (EQ (type, Qxpm)) | |
adac86db | 8389 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8390 | #endif |
8391 | ||
8392 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
8393 | if (EQ (type, Qjpeg)) | |
adac86db | 8394 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8395 | #endif |
8396 | ||
8397 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
8398 | if (EQ (type, Qtiff)) | |
adac86db | 8399 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8400 | #endif |
8401 | ||
8402 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
8403 | if (EQ (type, Qgif)) | |
adac86db | 8404 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8405 | #endif |
8406 | ||
8407 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
8408 | if (EQ (type, Qpng)) | |
adac86db | 8409 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8410 | #endif |
8411 | ||
8412 | #ifdef HAVE_GHOSTSCRIPT | |
8413 | if (EQ (type, Qpostscript)) | |
adac86db | 8414 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8415 | #endif |
8416 | ||
8417 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8418 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8419 | return Qnil; |
8420 | } | |
8421 | ||
4ef0d4d0 KS |
8422 | void |
8423 | syms_of_image () | |
8424 | { | |
2a611c1a JB |
8425 | extern Lisp_Object Qrisky_local_variable; /* Syms_of_xdisp has already run. */ |
8426 | ||
6e6fc3fd RS |
8427 | /* Initialize this only once, since that's what we do with Vimage_types |
8428 | and they are supposed to be in sync. Initializing here gives correct | |
8429 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8430 | image_types = NULL; | |
8431 | ||
0855eb52 JB |
8432 | /* Must be defined now becase we're going to update it below, while |
8433 | defining the supported image types. */ | |
8434 | DEFVAR_LISP ("image-types", &Vimage_types, | |
8435 | doc: /* List of potentially supported image types. | |
8436 | Each element of the list is a symbol for a image type, like 'jpeg or 'png. | |
8437 | To check whether it is really supported, use `image-type-available-p'. */); | |
8438 | Vimage_types = Qnil; | |
8439 | ||
2a611c1a JB |
8440 | DEFVAR_LISP ("image-library-alist", &Vimage_library_alist, |
8441 | doc: /* Alist of image types vs external libraries needed to display them. | |
8442 | ||
8443 | Each element is a list (IMAGE-TYPE LIBRARY...), where the car is a symbol | |
8444 | representing a supported image type, and the rest are strings giving | |
8445 | alternate filenames for the corresponding external libraries. | |
8446 | ||
8447 | Emacs tries to load the libraries in the order they appear on the | |
8448 | list; if none is loaded, the running session of Emacs won't | |
8449 | support the image type. Types 'pbm and 'xbm don't need to be | |
8450 | listed; they're always supported. */); | |
8451 | Vimage_library_alist = Qnil; | |
8452 | Fput (intern ("image-library-alist"), Qrisky_local_variable, Qt); | |
8453 | ||
f1f25b99 | 8454 | DEFVAR_LISP ("max-image-size", &Vmax_image_size, |
7df4765a KS |
8455 | doc: /* Maximum size of images. |
8456 | Emacs will not load an image into memory if its pixel width or | |
8457 | pixel height exceeds this limit. | |
8458 | ||
8459 | If the value is an integer, it directly specifies the maximum | |
8460 | image height and width, measured in pixels. If it is a floating | |
8461 | point number, it specifies the maximum image height and width | |
8462 | as a ratio to the frame height and width. If the value is | |
8463 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8464 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8465 | ||
0855eb52 JB |
8466 | Vimage_type_cache = Qnil; |
8467 | staticpro (&Vimage_type_cache); | |
8468 | ||
7c4e3a32 RS |
8469 | Qpbm = intern ("pbm"); |
8470 | staticpro (&Qpbm); | |
8471 | ADD_IMAGE_TYPE(Qpbm); | |
8472 | ||
8473 | Qxbm = intern ("xbm"); | |
8474 | staticpro (&Qxbm); | |
8475 | ADD_IMAGE_TYPE(Qxbm); | |
8476 | ||
8477 | define_image_type (&xbm_type, 1); | |
8478 | define_image_type (&pbm_type, 1); | |
8479 | ||
4ef0d4d0 KS |
8480 | QCascent = intern (":ascent"); |
8481 | staticpro (&QCascent); | |
8482 | QCmargin = intern (":margin"); | |
8483 | staticpro (&QCmargin); | |
8484 | QCrelief = intern (":relief"); | |
8485 | staticpro (&QCrelief); | |
8486 | QCconversion = intern (":conversion"); | |
8487 | staticpro (&QCconversion); | |
8488 | QCcolor_symbols = intern (":color-symbols"); | |
8489 | staticpro (&QCcolor_symbols); | |
8490 | QCheuristic_mask = intern (":heuristic-mask"); | |
8491 | staticpro (&QCheuristic_mask); | |
8492 | QCindex = intern (":index"); | |
8493 | staticpro (&QCindex); | |
8494 | QCmatrix = intern (":matrix"); | |
8495 | staticpro (&QCmatrix); | |
8496 | QCcolor_adjustment = intern (":color-adjustment"); | |
8497 | staticpro (&QCcolor_adjustment); | |
8498 | QCmask = intern (":mask"); | |
8499 | staticpro (&QCmask); | |
8500 | ||
8501 | Qlaplace = intern ("laplace"); | |
8502 | staticpro (&Qlaplace); | |
8503 | Qemboss = intern ("emboss"); | |
8504 | staticpro (&Qemboss); | |
8505 | Qedge_detection = intern ("edge-detection"); | |
8506 | staticpro (&Qedge_detection); | |
8507 | Qheuristic = intern ("heuristic"); | |
8508 | staticpro (&Qheuristic); | |
4ef0d4d0 KS |
8509 | |
8510 | Qpostscript = intern ("postscript"); | |
8511 | staticpro (&Qpostscript); | |
8512 | #ifdef HAVE_GHOSTSCRIPT | |
0855eb52 | 8513 | ADD_IMAGE_TYPE(Qpostscript); |
4ef0d4d0 KS |
8514 | QCloader = intern (":loader"); |
8515 | staticpro (&QCloader); | |
8516 | QCbounding_box = intern (":bounding-box"); | |
8517 | staticpro (&QCbounding_box); | |
8518 | QCpt_width = intern (":pt-width"); | |
8519 | staticpro (&QCpt_width); | |
8520 | QCpt_height = intern (":pt-height"); | |
8521 | staticpro (&QCpt_height); | |
8522 | #endif /* HAVE_GHOSTSCRIPT */ | |
8523 | ||
ea1aaa6f | 8524 | #if defined (HAVE_XPM) || defined (MAC_OS) |
4ef0d4d0 KS |
8525 | Qxpm = intern ("xpm"); |
8526 | staticpro (&Qxpm); | |
0855eb52 | 8527 | ADD_IMAGE_TYPE(Qxpm); |
4ef0d4d0 KS |
8528 | #endif |
8529 | ||
8530 | #if defined (HAVE_JPEG) || defined (MAC_OS) | |
8531 | Qjpeg = intern ("jpeg"); | |
8532 | staticpro (&Qjpeg); | |
0855eb52 | 8533 | ADD_IMAGE_TYPE(Qjpeg); |
4ef0d4d0 KS |
8534 | #endif |
8535 | ||
8536 | #if defined (HAVE_TIFF) || defined (MAC_OS) | |
8537 | Qtiff = intern ("tiff"); | |
8538 | staticpro (&Qtiff); | |
0855eb52 | 8539 | ADD_IMAGE_TYPE(Qtiff); |
4ef0d4d0 KS |
8540 | #endif |
8541 | ||
8542 | #if defined (HAVE_GIF) || defined (MAC_OS) | |
8543 | Qgif = intern ("gif"); | |
8544 | staticpro (&Qgif); | |
0855eb52 | 8545 | ADD_IMAGE_TYPE(Qgif); |
4ef0d4d0 KS |
8546 | #endif |
8547 | ||
8548 | #if defined (HAVE_PNG) || defined (MAC_OS) | |
8549 | Qpng = intern ("png"); | |
8550 | staticpro (&Qpng); | |
0855eb52 | 8551 | ADD_IMAGE_TYPE(Qpng); |
4ef0d4d0 KS |
8552 | #endif |
8553 | ||
0855eb52 | 8554 | defsubr (&Sinit_image_library); |
4ef0d4d0 KS |
8555 | defsubr (&Sclear_image_cache); |
8556 | defsubr (&Simage_size); | |
8557 | defsubr (&Simage_mask_p); | |
8558 | ||
8559 | #if GLYPH_DEBUG | |
8560 | defsubr (&Simagep); | |
8561 | defsubr (&Slookup_image); | |
8562 | #endif | |
8563 | ||
8564 | DEFVAR_BOOL ("cross-disabled-images", &cross_disabled_images, | |
8565 | doc: /* Non-nil means always draw a cross over disabled images. | |
8566 | Disabled images are those having an `:conversion disabled' property. | |
8567 | A cross is always drawn on black & white displays. */); | |
8568 | cross_disabled_images = 0; | |
8569 | ||
8570 | DEFVAR_LISP ("x-bitmap-file-path", &Vx_bitmap_file_path, | |
8571 | doc: /* List of directories to search for window system bitmap files. */); | |
8572 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
8573 | ||
8574 | DEFVAR_LISP ("image-cache-eviction-delay", &Vimage_cache_eviction_delay, | |
8575 | doc: /* Time after which cached images are removed from the cache. | |
8576 | When an image has not been displayed this many seconds, remove it | |
8577 | from the image cache. Value must be an integer or nil with nil | |
8578 | meaning don't clear the cache. */); | |
8579 | Vimage_cache_eviction_delay = make_number (30 * 60); | |
8580 | } | |
8581 | ||
4ef0d4d0 KS |
8582 | void |
8583 | init_image () | |
8584 | { | |
dac5344b | 8585 | #if defined (MAC_OSX) && TARGET_API_MAC_CARBON |
4ef0d4d0 KS |
8586 | init_image_func_pointer (); |
8587 | #endif | |
4ef0d4d0 KS |
8588 | } |
8589 | ||
1b9f8cec MB |
8590 | /* arch-tag: 123c2a5e-14a8-4c53-ab95-af47d7db49b9 |
8591 | (do not change this comment) */ |