Commit | Line | Data |
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4ef0d4d0 | 1 | /* Functions for image support on window system. |
73b0cd50 | 2 | Copyright (C) 1989, 1992-2011 Free Software Foundation, Inc. |
4ef0d4d0 KS |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
4ef0d4d0 | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
4ef0d4d0 KS |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
4ef0d4d0 KS |
18 | |
19 | #include <config.h> | |
4ef0d4d0 KS |
20 | #include <stdio.h> |
21 | #include <math.h> | |
be8c4ce4 | 22 | #include <ctype.h> |
4ef0d4d0 | 23 | #include <unistd.h> |
4ef0d4d0 | 24 | |
d7306fe6 DN |
25 | #ifdef HAVE_PNG |
26 | #if defined HAVE_LIBPNG_PNG_H | |
27 | # include <libpng/png.h> | |
28 | #else | |
29 | # include <png.h> | |
30 | #endif | |
285d07e2 | 31 | #endif |
d7306fe6 | 32 | |
c3417a74 DN |
33 | #include <setjmp.h> |
34 | ||
4ef0d4d0 KS |
35 | /* This makes the fields of a Display accessible, in Xlib header files. */ |
36 | ||
37 | #define XLIB_ILLEGAL_ACCESS | |
38 | ||
39 | #include "lisp.h" | |
40 | #include "frame.h" | |
41 | #include "window.h" | |
42 | #include "dispextern.h" | |
43 | #include "blockinput.h" | |
44 | #include "systime.h" | |
45 | #include <epaths.h> | |
3dcc8b84 | 46 | #include "character.h" |
022af124 | 47 | #include "coding.h" |
6087292e | 48 | #include "termhooks.h" |
3dcc8b84 | 49 | #include "font.h" |
4ef0d4d0 KS |
50 | |
51 | #ifdef HAVE_X_WINDOWS | |
52 | #include "xterm.h" | |
53 | #include <sys/types.h> | |
54 | #include <sys/stat.h> | |
55 | ||
56 | #define COLOR_TABLE_SUPPORT 1 | |
57 | ||
58 | typedef struct x_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
59 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) |
60 | #define NO_PIXMAP None | |
4ef0d4d0 KS |
61 | |
62 | #define RGB_PIXEL_COLOR unsigned long | |
63 | ||
9ecf6403 YM |
64 | #define PIX_MASK_RETAIN 0 |
65 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
66 | #endif /* HAVE_X_WINDOWS */ |
67 | ||
68 | ||
69 | #ifdef HAVE_NTGUI | |
0898ca10 | 70 | #include "w32.h" |
4ef0d4d0 KS |
71 | #include "w32term.h" |
72 | ||
73 | /* W32_TODO : Color tables on W32. */ | |
74 | #undef COLOR_TABLE_SUPPORT | |
75 | ||
76 | typedef struct w32_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
77 | #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y) |
78 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
79 | |
80 | #define RGB_PIXEL_COLOR COLORREF | |
81 | ||
9ecf6403 YM |
82 | #define PIX_MASK_RETAIN 0 |
83 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
84 | |
85 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual | |
86 | #define x_defined_color w32_defined_color | |
87 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 JR |
88 | |
89 | /* Functions from w32term.c that depend on XColor (so can't go in w32term.h | |
90 | without modifying lots of files). */ | |
91 | extern void x_query_colors (struct frame *f, XColor *colors, int ncolors); | |
92 | extern void x_query_color (struct frame *f, XColor *color); | |
5be1c984 EZ |
93 | |
94 | /* Version of libpng that we were compiled with, or -1 if no PNG | |
95 | support was compiled in. This is tested by w32-win.el to correctly | |
96 | set up the alist used to search for PNG libraries. */ | |
97 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
98 | #endif /* HAVE_NTGUI */ |
99 | ||
edfda783 AR |
100 | #ifdef HAVE_NS |
101 | #include "nsterm.h" | |
102 | #include <sys/types.h> | |
103 | #include <sys/stat.h> | |
104 | ||
105 | #undef COLOR_TABLE_SUPPORT | |
106 | ||
107 | typedef struct ns_bitmap_record Bitmap_Record; | |
108 | ||
109 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) | |
110 | #define NO_PIXMAP 0 | |
111 | ||
112 | #define RGB_PIXEL_COLOR unsigned long | |
113 | #define ZPixmap 0 | |
114 | ||
115 | #define PIX_MASK_RETAIN 0 | |
116 | #define PIX_MASK_DRAW 1 | |
117 | ||
118 | #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual | |
119 | #define x_defined_color(f, name, color_def, alloc) \ | |
120 | ns_defined_color (f, name, color_def, alloc, 0) | |
121 | #define FRAME_X_SCREEN(f) 0 | |
9e50ff0c | 122 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
123 | #endif /* HAVE_NS */ |
124 | ||
125 | ||
97ec208f DN |
126 | /* The symbol `postscript' identifying images of this type. */ |
127 | ||
955cbe7b | 128 | static Lisp_Object Qpostscript; |
4ef0d4d0 | 129 | |
f57e2426 J |
130 | static void x_disable_image (struct frame *, struct image *); |
131 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
132 | Lisp_Object); | |
4ef0d4d0 | 133 | |
f57e2426 J |
134 | static void init_color_table (void); |
135 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 136 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
137 | static void free_color_table (void); |
138 | static unsigned long *colors_in_color_table (int *n); | |
139 | static unsigned long lookup_pixel_color (struct frame *f, unsigned long p); | |
4ef0d4d0 | 140 | #endif |
cd64ea1d | 141 | static Lisp_Object Finit_image_library (Lisp_Object, Lisp_Object); |
4ef0d4d0 KS |
142 | |
143 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
144 | id, which is just an int that this section returns. Bitmaps are | |
145 | reference counted so they can be shared among frames. | |
146 | ||
147 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
148 | be used to indicate no bitmap. | |
149 | ||
150 | If you use x_create_bitmap_from_data, then you must keep track of | |
151 | the bitmaps yourself. That is, creating a bitmap from the same | |
152 | data more than once will not be caught. */ | |
153 | ||
edfda783 AR |
154 | #ifdef HAVE_NS |
155 | XImagePtr | |
156 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
157 | unsigned int width, unsigned int height, | |
158 | unsigned long plane_mask, int format) | |
159 | { | |
6fb5f7da | 160 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 161 | ns_retain_object (pixmap); |
edfda783 AR |
162 | return pixmap; |
163 | } | |
164 | ||
165 | /* use with imgs created by ns_image_for_XPM */ | |
166 | unsigned long | |
167 | XGetPixel (XImagePtr ximage, int x, int y) | |
168 | { | |
ed3751c8 | 169 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
170 | } |
171 | ||
172 | /* use with imgs created by ns_image_for_XPM; alpha set to 1; | |
173 | pixel is assumed to be in form RGB */ | |
174 | void | |
175 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
176 | { | |
ed3751c8 | 177 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
178 | } |
179 | #endif /* HAVE_NS */ | |
180 | ||
4ef0d4d0 KS |
181 | |
182 | /* Functions to access the contents of a bitmap, given an id. */ | |
183 | ||
184 | int | |
d3da34e0 | 185 | x_bitmap_height (FRAME_PTR f, int id) |
4ef0d4d0 KS |
186 | { |
187 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
188 | } | |
189 | ||
190 | int | |
d3da34e0 | 191 | x_bitmap_width (FRAME_PTR f, int id) |
4ef0d4d0 KS |
192 | { |
193 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
194 | } | |
195 | ||
196 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
197 | int | |
d3da34e0 | 198 | x_bitmap_pixmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
199 | { |
200 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
201 | } | |
202 | #endif | |
203 | ||
204 | #ifdef HAVE_X_WINDOWS | |
205 | int | |
d3da34e0 | 206 | x_bitmap_mask (FRAME_PTR f, int id) |
4ef0d4d0 KS |
207 | { |
208 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
209 | } | |
210 | #endif | |
211 | ||
212 | /* Allocate a new bitmap record. Returns index of new record. */ | |
213 | ||
214 | static int | |
d3da34e0 | 215 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
216 | { |
217 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
218 | int i; | |
219 | ||
220 | if (dpyinfo->bitmaps == NULL) | |
221 | { | |
222 | dpyinfo->bitmaps_size = 10; | |
223 | dpyinfo->bitmaps | |
224 | = (Bitmap_Record *) xmalloc (dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
225 | dpyinfo->bitmaps_last = 1; | |
226 | return 1; | |
227 | } | |
228 | ||
229 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) | |
230 | return ++dpyinfo->bitmaps_last; | |
231 | ||
232 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
233 | if (dpyinfo->bitmaps[i].refcount == 0) | |
234 | return i + 1; | |
235 | ||
236 | dpyinfo->bitmaps_size *= 2; | |
237 | dpyinfo->bitmaps | |
238 | = (Bitmap_Record *) xrealloc (dpyinfo->bitmaps, | |
239 | dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
240 | return ++dpyinfo->bitmaps_last; | |
241 | } | |
242 | ||
243 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
244 | ||
245 | void | |
d3da34e0 | 246 | x_reference_bitmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
247 | { |
248 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
249 | } | |
250 | ||
251 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
252 | ||
253 | int | |
d3da34e0 | 254 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
255 | { |
256 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
257 | int id; | |
258 | ||
259 | #ifdef HAVE_X_WINDOWS | |
260 | Pixmap bitmap; | |
261 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
262 | bits, width, height); | |
263 | if (! bitmap) | |
264 | return -1; | |
265 | #endif /* HAVE_X_WINDOWS */ | |
266 | ||
267 | #ifdef HAVE_NTGUI | |
268 | Pixmap bitmap; | |
269 | bitmap = CreateBitmap (width, height, | |
270 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
271 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
272 | bits); | |
273 | if (! bitmap) | |
274 | return -1; | |
275 | #endif /* HAVE_NTGUI */ | |
276 | ||
edfda783 | 277 | #ifdef HAVE_NS |
ed3751c8 | 278 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 AR |
279 | if (!bitmap) |
280 | return -1; | |
281 | #endif | |
282 | ||
4ef0d4d0 | 283 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 284 | |
edfda783 AR |
285 | #ifdef HAVE_NS |
286 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
287 | dpyinfo->bitmaps[id - 1].depth = 1; | |
288 | #endif | |
289 | ||
4ef0d4d0 KS |
290 | dpyinfo->bitmaps[id - 1].file = NULL; |
291 | dpyinfo->bitmaps[id - 1].height = height; | |
292 | dpyinfo->bitmaps[id - 1].width = width; | |
293 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
294 | ||
295 | #ifdef HAVE_X_WINDOWS | |
296 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
297 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
298 | dpyinfo->bitmaps[id - 1].depth = 1; | |
299 | #endif /* HAVE_X_WINDOWS */ | |
300 | ||
301 | #ifdef HAVE_NTGUI | |
302 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
303 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
304 | dpyinfo->bitmaps[id - 1].depth = 1; | |
305 | #endif /* HAVE_NTGUI */ | |
306 | ||
307 | return id; | |
308 | } | |
309 | ||
310 | /* Create bitmap from file FILE for frame F. */ | |
311 | ||
312 | int | |
d3da34e0 | 313 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 314 | { |
edfda783 AR |
315 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
316 | ||
4ef0d4d0 KS |
317 | #ifdef HAVE_NTGUI |
318 | return -1; /* W32_TODO : bitmap support */ | |
319 | #endif /* HAVE_NTGUI */ | |
320 | ||
edfda783 AR |
321 | #ifdef HAVE_NS |
322 | int id; | |
ed3751c8 | 323 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
324 | |
325 | if (!bitmap) | |
326 | return -1; | |
327 | ||
328 | ||
329 | id = x_allocate_bitmap_record (f); | |
330 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
331 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
332 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
333 | dpyinfo->bitmaps[id - 1].depth = 1; | |
ed3751c8 JB |
334 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
335 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
edfda783 AR |
336 | strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file)); |
337 | return id; | |
338 | #endif | |
339 | ||
4ef0d4d0 | 340 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
341 | unsigned int width, height; |
342 | Pixmap bitmap; | |
343 | int xhot, yhot, result, id; | |
344 | Lisp_Object found; | |
345 | int fd; | |
346 | char *filename; | |
347 | ||
348 | /* Look for an existing bitmap with the same name. */ | |
349 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
350 | { | |
351 | if (dpyinfo->bitmaps[id].refcount | |
352 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 353 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
354 | { |
355 | ++dpyinfo->bitmaps[id].refcount; | |
356 | return id + 1; | |
357 | } | |
358 | } | |
359 | ||
360 | /* Search bitmap-file-path for the file, if appropriate. */ | |
361 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
362 | if (fd < 0) | |
363 | return -1; | |
364 | emacs_close (fd); | |
365 | ||
51b59d79 | 366 | filename = SSDATA (found); |
4ef0d4d0 KS |
367 | |
368 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
369 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
370 | if (result != BitmapSuccess) | |
371 | return -1; | |
372 | ||
373 | id = x_allocate_bitmap_record (f); | |
374 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
375 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
376 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
377 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
378 | dpyinfo->bitmaps[id - 1].depth = 1; | |
379 | dpyinfo->bitmaps[id - 1].height = height; | |
380 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 381 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
382 | |
383 | return id; | |
384 | #endif /* HAVE_X_WINDOWS */ | |
385 | } | |
386 | ||
387 | /* Free bitmap B. */ | |
388 | ||
389 | static void | |
d3da34e0 | 390 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
391 | { |
392 | #ifdef HAVE_X_WINDOWS | |
393 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
394 | if (bm->have_mask) | |
395 | XFreePixmap (dpyinfo->display, bm->mask); | |
396 | #endif /* HAVE_X_WINDOWS */ | |
397 | ||
398 | #ifdef HAVE_NTGUI | |
399 | DeleteObject (bm->pixmap); | |
400 | #endif /* HAVE_NTGUI */ | |
401 | ||
edfda783 | 402 | #ifdef HAVE_NS |
ed3751c8 | 403 | ns_release_object (bm->img); |
edfda783 AR |
404 | #endif |
405 | ||
4ef0d4d0 KS |
406 | if (bm->file) |
407 | { | |
408 | xfree (bm->file); | |
409 | bm->file = NULL; | |
410 | } | |
411 | } | |
412 | ||
413 | /* Remove reference to bitmap with id number ID. */ | |
414 | ||
415 | void | |
d3da34e0 | 416 | x_destroy_bitmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
417 | { |
418 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
419 | ||
420 | if (id > 0) | |
421 | { | |
422 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
423 | ||
424 | if (--bm->refcount == 0) | |
425 | { | |
426 | BLOCK_INPUT; | |
65342ae3 | 427 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
428 | UNBLOCK_INPUT; |
429 | } | |
430 | } | |
431 | } | |
432 | ||
433 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
434 | ||
435 | void | |
d3da34e0 | 436 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 KS |
437 | { |
438 | int i; | |
439 | Bitmap_Record *bm = dpyinfo->bitmaps; | |
440 | ||
441 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
442 | if (bm->refcount > 0) | |
65342ae3 | 443 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
444 | |
445 | dpyinfo->bitmaps_last = 0; | |
446 | } | |
447 | ||
448 | ||
449 | #ifdef HAVE_X_WINDOWS | |
450 | ||
451 | /* Useful functions defined in the section | |
452 | `Image type independent image structures' below. */ | |
453 | ||
f57e2426 J |
454 | static unsigned long four_corners_best (XImagePtr ximg, |
455 | int *corners, | |
456 | unsigned long width, | |
457 | unsigned long height); | |
4ef0d4d0 | 458 | |
f57e2426 J |
459 | static int x_create_x_image_and_pixmap (struct frame *f, int width, int height, |
460 | int depth, XImagePtr *ximg, | |
461 | Pixmap *pixmap); | |
4ef0d4d0 | 462 | |
f57e2426 | 463 | static void x_destroy_x_image (XImagePtr ximg); |
4ef0d4d0 KS |
464 | |
465 | ||
466 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
467 | It's nicer with some borders in this context */ | |
468 | ||
469 | int | |
d3da34e0 | 470 | x_create_bitmap_mask (struct frame *f, int id) |
4ef0d4d0 KS |
471 | { |
472 | Pixmap pixmap, mask; | |
473 | XImagePtr ximg, mask_img; | |
474 | unsigned long width, height; | |
475 | int result; | |
476 | unsigned long bg; | |
477 | unsigned long x, y, xp, xm, yp, ym; | |
478 | GC gc; | |
479 | ||
480 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
481 | ||
482 | if (!(id > 0)) | |
483 | return -1; | |
484 | ||
485 | pixmap = x_bitmap_pixmap (f, id); | |
486 | width = x_bitmap_width (f, id); | |
487 | height = x_bitmap_height (f, id); | |
488 | ||
489 | BLOCK_INPUT; | |
490 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
491 | ~0, ZPixmap); | |
492 | ||
493 | if (!ximg) | |
494 | { | |
495 | UNBLOCK_INPUT; | |
496 | return -1; | |
497 | } | |
498 | ||
499 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
500 | ||
501 | UNBLOCK_INPUT; | |
502 | if (!result) | |
503 | { | |
504 | XDestroyImage (ximg); | |
505 | return -1; | |
506 | } | |
507 | ||
6ac3c7bb | 508 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
509 | |
510 | for (y = 0; y < ximg->height; ++y) | |
511 | { | |
512 | for (x = 0; x < ximg->width; ++x) | |
513 | { | |
514 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
515 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
516 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
517 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
518 | if (XGetPixel (ximg, x, y) == bg | |
519 | && XGetPixel (ximg, x, yp) == bg | |
520 | && XGetPixel (ximg, x, ym) == bg | |
521 | && XGetPixel (ximg, xp, y) == bg | |
522 | && XGetPixel (ximg, xp, yp) == bg | |
523 | && XGetPixel (ximg, xp, ym) == bg | |
524 | && XGetPixel (ximg, xm, y) == bg | |
525 | && XGetPixel (ximg, xm, yp) == bg | |
526 | && XGetPixel (ximg, xm, ym) == bg) | |
527 | XPutPixel (mask_img, x, y, 0); | |
528 | else | |
529 | XPutPixel (mask_img, x, y, 1); | |
530 | } | |
531 | } | |
532 | ||
533 | xassert (interrupt_input_blocked); | |
534 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); | |
535 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
536 | width, height); | |
537 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
538 | ||
539 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
540 | dpyinfo->bitmaps[id - 1].mask = mask; | |
541 | ||
542 | XDestroyImage (ximg); | |
543 | x_destroy_x_image (mask_img); | |
544 | ||
545 | return 0; | |
546 | } | |
547 | ||
548 | #endif /* HAVE_X_WINDOWS */ | |
549 | ||
550 | ||
551 | /*********************************************************************** | |
552 | Image types | |
553 | ***********************************************************************/ | |
554 | ||
4ef0d4d0 KS |
555 | /* List of supported image types. Use define_image_type to add new |
556 | types. Use lookup_image_type to find a type for a given symbol. */ | |
557 | ||
558 | static struct image_type *image_types; | |
559 | ||
560 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ | |
561 | ||
955cbe7b | 562 | static Lisp_Object Qxbm; |
4ef0d4d0 KS |
563 | |
564 | /* Keywords. */ | |
565 | ||
955cbe7b PE |
566 | Lisp_Object QCascent, QCmargin, QCrelief; |
567 | static Lisp_Object Qcount, Qextension_data; | |
568 | Lisp_Object QCconversion; | |
569 | static Lisp_Object QCheuristic_mask; | |
570 | static Lisp_Object QCcolor_symbols; | |
571 | static Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask, QCgeometry; | |
572 | static Lisp_Object QCcrop, QCrotation; | |
4ef0d4d0 KS |
573 | |
574 | /* Other symbols. */ | |
575 | ||
955cbe7b | 576 | static Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; |
4ef0d4d0 | 577 | |
4ef0d4d0 KS |
578 | /* Function prototypes. */ |
579 | ||
f57e2426 J |
580 | static Lisp_Object define_image_type (struct image_type *type, int loaded); |
581 | static struct image_type *lookup_image_type (Lisp_Object symbol); | |
675e2c69 | 582 | static void image_error (const char *format, Lisp_Object, Lisp_Object); |
f57e2426 J |
583 | static void x_laplace (struct frame *, struct image *); |
584 | static void x_emboss (struct frame *, struct image *); | |
585 | static int x_build_heuristic_mask (struct frame *, struct image *, | |
586 | Lisp_Object); | |
84d358f0 | 587 | #ifdef HAVE_NTGUI |
0855eb52 | 588 | #define CACHE_IMAGE_TYPE(type, status) \ |
0898ca10 | 589 | do { Vlibrary_cache = Fcons (Fcons (type, status), Vlibrary_cache); } while (0) |
84d358f0 JB |
590 | #else |
591 | #define CACHE_IMAGE_TYPE(type, status) | |
592 | #endif | |
0855eb52 JB |
593 | |
594 | #define ADD_IMAGE_TYPE(type) \ | |
595 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) | |
4ef0d4d0 KS |
596 | |
597 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 598 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 599 | |
0855eb52 | 600 | static Lisp_Object |
d3da34e0 | 601 | define_image_type (struct image_type *type, int loaded) |
4ef0d4d0 | 602 | { |
0855eb52 JB |
603 | Lisp_Object success; |
604 | ||
605 | if (!loaded) | |
606 | success = Qnil; | |
607 | else | |
608 | { | |
609 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
610 | The initialized data segment is read-only. */ | |
611 | struct image_type *p = (struct image_type *) xmalloc (sizeof *p); | |
72af86bd | 612 | memcpy (p, type, sizeof *p); |
0855eb52 JB |
613 | p->next = image_types; |
614 | image_types = p; | |
615 | success = Qt; | |
616 | } | |
617 | ||
adac86db | 618 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 619 | return success; |
4ef0d4d0 KS |
620 | } |
621 | ||
622 | ||
623 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
624 | structure. Value is null if SYMBOL is not a known image type. */ | |
625 | ||
55d4c1b2 | 626 | static inline struct image_type * |
d3da34e0 | 627 | lookup_image_type (Lisp_Object symbol) |
4ef0d4d0 KS |
628 | { |
629 | struct image_type *type; | |
630 | ||
803aac3e | 631 | /* We must initialize the image-type if it hasn't been already. */ |
2e288d54 | 632 | if (NILP (Finit_image_library (symbol, Vdynamic_library_alist))) |
803aac3e MB |
633 | return 0; /* unimplemented */ |
634 | ||
4ef0d4d0 KS |
635 | for (type = image_types; type; type = type->next) |
636 | if (EQ (symbol, *type->type)) | |
637 | break; | |
638 | ||
639 | return type; | |
640 | } | |
641 | ||
642 | ||
643 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
644 | valid image specification is a list whose car is the symbol | |
645 | `image', and whose rest is a property list. The property list must | |
646 | contain a value for key `:type'. That value must be the name of a | |
647 | supported image type. The rest of the property list depends on the | |
648 | image type. */ | |
649 | ||
650 | int | |
d3da34e0 | 651 | valid_image_p (Lisp_Object object) |
4ef0d4d0 KS |
652 | { |
653 | int valid_p = 0; | |
654 | ||
655 | if (IMAGEP (object)) | |
656 | { | |
657 | Lisp_Object tem; | |
658 | ||
659 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
660 | if (EQ (XCAR (tem), QCtype)) | |
661 | { | |
662 | tem = XCDR (tem); | |
663 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
664 | { | |
665 | struct image_type *type; | |
666 | type = lookup_image_type (XCAR (tem)); | |
667 | if (type) | |
668 | valid_p = type->valid_p (object); | |
669 | } | |
670 | ||
671 | break; | |
672 | } | |
673 | } | |
674 | ||
675 | return valid_p; | |
676 | } | |
677 | ||
678 | ||
679 | /* Log error message with format string FORMAT and argument ARG. | |
680 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
681 | good idea because this would interrupt redisplay, and the error | |
682 | message display would lead to another redisplay. This function | |
683 | therefore simply displays a message. */ | |
684 | ||
685 | static void | |
675e2c69 | 686 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
687 | { |
688 | add_to_log (format, arg1, arg2); | |
689 | } | |
690 | ||
691 | ||
692 | \f | |
693 | /*********************************************************************** | |
694 | Image specifications | |
695 | ***********************************************************************/ | |
696 | ||
697 | enum image_value_type | |
698 | { | |
699 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
700 | IMAGE_STRING_VALUE, | |
701 | IMAGE_STRING_OR_NIL_VALUE, | |
702 | IMAGE_SYMBOL_VALUE, | |
703 | IMAGE_POSITIVE_INTEGER_VALUE, | |
704 | IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, | |
705 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, | |
706 | IMAGE_ASCENT_VALUE, | |
707 | IMAGE_INTEGER_VALUE, | |
708 | IMAGE_FUNCTION_VALUE, | |
709 | IMAGE_NUMBER_VALUE, | |
710 | IMAGE_BOOL_VALUE | |
711 | }; | |
712 | ||
713 | /* Structure used when parsing image specifications. */ | |
714 | ||
715 | struct image_keyword | |
716 | { | |
717 | /* Name of keyword. */ | |
675e2c69 | 718 | const char *name; |
4ef0d4d0 KS |
719 | |
720 | /* The type of value allowed. */ | |
721 | enum image_value_type type; | |
722 | ||
723 | /* Non-zero means key must be present. */ | |
724 | int mandatory_p; | |
725 | ||
726 | /* Used to recognize duplicate keywords in a property list. */ | |
727 | int count; | |
728 | ||
729 | /* The value that was found. */ | |
730 | Lisp_Object value; | |
731 | }; | |
732 | ||
733 | ||
f57e2426 J |
734 | static int parse_image_spec (Lisp_Object, struct image_keyword *, |
735 | int, Lisp_Object); | |
736 | static Lisp_Object image_spec_value (Lisp_Object, Lisp_Object, int *); | |
4ef0d4d0 KS |
737 | |
738 | ||
739 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
740 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
741 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
742 | image_keywords structures of size NKEYWORDS describing other | |
743 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
744 | ||
745 | static int | |
d3da34e0 JB |
746 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
747 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
748 | { |
749 | int i; | |
750 | Lisp_Object plist; | |
751 | ||
752 | if (!IMAGEP (spec)) | |
753 | return 0; | |
754 | ||
755 | plist = XCDR (spec); | |
756 | while (CONSP (plist)) | |
757 | { | |
758 | Lisp_Object key, value; | |
759 | ||
760 | /* First element of a pair must be a symbol. */ | |
761 | key = XCAR (plist); | |
762 | plist = XCDR (plist); | |
763 | if (!SYMBOLP (key)) | |
764 | return 0; | |
765 | ||
766 | /* There must follow a value. */ | |
767 | if (!CONSP (plist)) | |
768 | return 0; | |
769 | value = XCAR (plist); | |
770 | plist = XCDR (plist); | |
771 | ||
772 | /* Find key in KEYWORDS. Error if not found. */ | |
773 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 774 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
775 | break; |
776 | ||
777 | if (i == nkeywords) | |
778 | continue; | |
779 | ||
780 | /* Record that we recognized the keyword. If a keywords | |
781 | was found more than once, it's an error. */ | |
782 | keywords[i].value = value; | |
783 | ++keywords[i].count; | |
784 | ||
785 | if (keywords[i].count > 1) | |
786 | return 0; | |
787 | ||
788 | /* Check type of value against allowed type. */ | |
789 | switch (keywords[i].type) | |
790 | { | |
791 | case IMAGE_STRING_VALUE: | |
792 | if (!STRINGP (value)) | |
793 | return 0; | |
794 | break; | |
795 | ||
796 | case IMAGE_STRING_OR_NIL_VALUE: | |
797 | if (!STRINGP (value) && !NILP (value)) | |
798 | return 0; | |
799 | break; | |
800 | ||
801 | case IMAGE_SYMBOL_VALUE: | |
802 | if (!SYMBOLP (value)) | |
803 | return 0; | |
804 | break; | |
805 | ||
806 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
807 | if (!INTEGERP (value) || XINT (value) <= 0) | |
808 | return 0; | |
809 | break; | |
810 | ||
811 | case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR: | |
812 | if (INTEGERP (value) && XINT (value) >= 0) | |
813 | break; | |
814 | if (CONSP (value) | |
815 | && INTEGERP (XCAR (value)) && INTEGERP (XCDR (value)) | |
816 | && XINT (XCAR (value)) >= 0 && XINT (XCDR (value)) >= 0) | |
817 | break; | |
818 | return 0; | |
819 | ||
820 | case IMAGE_ASCENT_VALUE: | |
821 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
822 | break; | |
823 | else if (INTEGERP (value) | |
824 | && XINT (value) >= 0 | |
825 | && XINT (value) <= 100) | |
826 | break; | |
827 | return 0; | |
828 | ||
829 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
830 | if (!INTEGERP (value) || XINT (value) < 0) | |
831 | return 0; | |
832 | break; | |
833 | ||
834 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
835 | break; | |
836 | ||
837 | case IMAGE_FUNCTION_VALUE: | |
838 | value = indirect_function (value); | |
ca105506 | 839 | if (!NILP (Ffunctionp (value))) |
4ef0d4d0 KS |
840 | break; |
841 | return 0; | |
842 | ||
843 | case IMAGE_NUMBER_VALUE: | |
844 | if (!INTEGERP (value) && !FLOATP (value)) | |
845 | return 0; | |
846 | break; | |
847 | ||
848 | case IMAGE_INTEGER_VALUE: | |
849 | if (!INTEGERP (value)) | |
850 | return 0; | |
851 | break; | |
852 | ||
853 | case IMAGE_BOOL_VALUE: | |
854 | if (!NILP (value) && !EQ (value, Qt)) | |
855 | return 0; | |
856 | break; | |
857 | ||
858 | default: | |
859 | abort (); | |
860 | break; | |
861 | } | |
862 | ||
863 | if (EQ (key, QCtype) && !EQ (type, value)) | |
864 | return 0; | |
865 | } | |
866 | ||
867 | /* Check that all mandatory fields are present. */ | |
868 | for (i = 0; i < nkeywords; ++i) | |
869 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
870 | return 0; | |
871 | ||
872 | return NILP (plist); | |
873 | } | |
874 | ||
875 | ||
876 | /* Return the value of KEY in image specification SPEC. Value is nil | |
877 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
878 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
879 | ||
880 | static Lisp_Object | |
d3da34e0 | 881 | image_spec_value (Lisp_Object spec, Lisp_Object key, int *found) |
4ef0d4d0 KS |
882 | { |
883 | Lisp_Object tail; | |
884 | ||
885 | xassert (valid_image_p (spec)); | |
886 | ||
887 | for (tail = XCDR (spec); | |
888 | CONSP (tail) && CONSP (XCDR (tail)); | |
889 | tail = XCDR (XCDR (tail))) | |
890 | { | |
891 | if (EQ (XCAR (tail), key)) | |
892 | { | |
893 | if (found) | |
894 | *found = 1; | |
895 | return XCAR (XCDR (tail)); | |
896 | } | |
897 | } | |
898 | ||
899 | if (found) | |
900 | *found = 0; | |
901 | return Qnil; | |
902 | } | |
903 | ||
904 | ||
905 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
906 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
907 | PIXELS non-nil means return the size in pixels, otherwise return the | |
908 | size in canonical character units. | |
909 | FRAME is the frame on which the image will be displayed. FRAME nil | |
910 | or omitted means use the selected frame. */) | |
5842a27b | 911 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
912 | { |
913 | Lisp_Object size; | |
914 | ||
915 | size = Qnil; | |
916 | if (valid_image_p (spec)) | |
917 | { | |
918 | struct frame *f = check_x_frame (frame); | |
919 | int id = lookup_image (f, spec); | |
920 | struct image *img = IMAGE_FROM_ID (f, id); | |
921 | int width = img->width + 2 * img->hmargin; | |
922 | int height = img->height + 2 * img->vmargin; | |
923 | ||
924 | if (NILP (pixels)) | |
925 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
926 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
927 | else | |
928 | size = Fcons (make_number (width), make_number (height)); | |
929 | } | |
930 | else | |
931 | error ("Invalid image specification"); | |
932 | ||
933 | return size; | |
934 | } | |
935 | ||
936 | ||
937 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
938 | doc: /* Return t if image SPEC has a mask bitmap. | |
939 | FRAME is the frame on which the image will be displayed. FRAME nil | |
940 | or omitted means use the selected frame. */) | |
5842a27b | 941 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
942 | { |
943 | Lisp_Object mask; | |
944 | ||
945 | mask = Qnil; | |
946 | if (valid_image_p (spec)) | |
947 | { | |
948 | struct frame *f = check_x_frame (frame); | |
949 | int id = lookup_image (f, spec); | |
950 | struct image *img = IMAGE_FROM_ID (f, id); | |
951 | if (img->mask) | |
952 | mask = Qt; | |
953 | } | |
954 | else | |
955 | error ("Invalid image specification"); | |
956 | ||
957 | return mask; | |
958 | } | |
959 | ||
1546c559 JL |
960 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
961 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
962 | FRAME is the frame on which the image will be displayed. FRAME nil |
963 | or omitted means use the selected frame. */) | |
5842a27b | 964 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
965 | { |
966 | Lisp_Object ext; | |
967 | ||
968 | ext = Qnil; | |
969 | if (valid_image_p (spec)) | |
970 | { | |
971 | struct frame *f = check_x_frame (frame); | |
972 | int id = lookup_image (f, spec); | |
973 | struct image *img = IMAGE_FROM_ID (f, id); | |
974 | ext = img->data.lisp_val; | |
975 | } | |
976 | ||
977 | return ext; | |
978 | } | |
979 | ||
4ef0d4d0 KS |
980 | \f |
981 | /*********************************************************************** | |
982 | Image type independent image structures | |
983 | ***********************************************************************/ | |
984 | ||
f57e2426 J |
985 | static void free_image (struct frame *f, struct image *img); |
986 | static int check_image_size (struct frame *f, int width, int height); | |
4ef0d4d0 | 987 | |
f1f25b99 | 988 | #define MAX_IMAGE_SIZE 6.0 |
4ef0d4d0 KS |
989 | /* Allocate and return a new image structure for image specification |
990 | SPEC. SPEC has a hash value of HASH. */ | |
991 | ||
992 | static struct image * | |
0de4bb68 | 993 | make_image (Lisp_Object spec, EMACS_UINT hash) |
4ef0d4d0 KS |
994 | { |
995 | struct image *img = (struct image *) xmalloc (sizeof *img); | |
a2bc5bdd | 996 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 KS |
997 | |
998 | xassert (valid_image_p (spec)); | |
72af86bd | 999 | memset (img, 0, sizeof *img); |
a2bc5bdd | 1000 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 KS |
1001 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
1002 | xassert (img->type != NULL); | |
1003 | img->spec = spec; | |
1004 | img->data.lisp_val = Qnil; | |
1005 | img->ascent = DEFAULT_IMAGE_ASCENT; | |
1006 | img->hash = hash; | |
6ac3c7bb | 1007 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
1008 | return img; |
1009 | } | |
1010 | ||
1011 | ||
1012 | /* Free image IMG which was used on frame F, including its resources. */ | |
1013 | ||
1014 | static void | |
d3da34e0 | 1015 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1016 | { |
1017 | if (img) | |
1018 | { | |
354884c4 | 1019 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1020 | |
1021 | /* Remove IMG from the hash table of its cache. */ | |
1022 | if (img->prev) | |
1023 | img->prev->next = img->next; | |
1024 | else | |
1025 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1026 | ||
1027 | if (img->next) | |
1028 | img->next->prev = img->prev; | |
1029 | ||
1030 | c->images[img->id] = NULL; | |
1031 | ||
1032 | /* Free resources, then free IMG. */ | |
1033 | img->type->free (f, img); | |
1034 | xfree (img); | |
1035 | } | |
1036 | } | |
1037 | ||
f1f25b99 CY |
1038 | /* Return 1 if the given widths and heights are valid for display; |
1039 | otherwise, return 0. */ | |
1040 | ||
1041 | int | |
d3da34e0 | 1042 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1043 | { |
7df4765a | 1044 | int w, h; |
f1f25b99 | 1045 | |
7df4765a | 1046 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1047 | return 0; |
1048 | ||
7df4765a KS |
1049 | if (INTEGERP (Vmax_image_size)) |
1050 | w = h = XINT (Vmax_image_size); | |
1051 | else if (FLOATP (Vmax_image_size)) | |
1052 | { | |
1053 | if (f != NULL) | |
1054 | { | |
1055 | w = FRAME_PIXEL_WIDTH (f); | |
1056 | h = FRAME_PIXEL_HEIGHT (f); | |
1057 | } | |
1058 | else | |
1059 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
1060 | w = (int) (XFLOAT_DATA (Vmax_image_size) * w); | |
1061 | h = (int) (XFLOAT_DATA (Vmax_image_size) * h); | |
1062 | } | |
1063 | else | |
1064 | return 1; | |
1065 | ||
1066 | return (width <= w && height <= h); | |
f1f25b99 | 1067 | } |
4ef0d4d0 KS |
1068 | |
1069 | /* Prepare image IMG for display on frame F. Must be called before | |
1070 | drawing an image. */ | |
1071 | ||
1072 | void | |
d3da34e0 | 1073 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1074 | { |
1075 | EMACS_TIME t; | |
1076 | ||
1077 | /* We're about to display IMG, so set its timestamp to `now'. */ | |
1078 | EMACS_GET_TIME (t); | |
1079 | img->timestamp = EMACS_SECS (t); | |
1080 | ||
1081 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1082 | type dependent loader function. */ | |
1083 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1084 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 | 1085 | |
4ef0d4d0 KS |
1086 | } |
1087 | ||
1088 | ||
1089 | /* Value is the number of pixels for the ascent of image IMG when | |
1090 | drawn in face FACE. */ | |
1091 | ||
1092 | int | |
d3da34e0 | 1093 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1094 | { |
1938bc36 | 1095 | int height; |
4ef0d4d0 KS |
1096 | int ascent; |
1097 | ||
1938bc36 KS |
1098 | if (slice->height == img->height) |
1099 | height = img->height + img->vmargin; | |
1100 | else if (slice->y == 0) | |
1101 | height = slice->height + img->vmargin; | |
1102 | else | |
1103 | height = slice->height; | |
1104 | ||
4ef0d4d0 KS |
1105 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1106 | { | |
1107 | if (face->font) | |
1108 | { | |
1109 | #ifdef HAVE_NTGUI | |
1110 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1111 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1112 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1113 | #else |
1114 | /* This expression is arranged so that if the image can't be | |
1115 | exactly centered, it will be moved slightly up. This is | |
1116 | because a typical font is `top-heavy' (due to the presence | |
1117 | uppercase letters), so the image placement should err towards | |
1118 | being top-heavy too. It also just generally looks better. */ | |
edfda783 AR |
1119 | ascent = (height + FONT_BASE(face->font) |
1120 | - FONT_DESCENT(face->font) + 1) / 2; | |
4ef0d4d0 KS |
1121 | #endif /* HAVE_NTGUI */ |
1122 | } | |
1123 | else | |
1124 | ascent = height / 2; | |
1125 | } | |
1126 | else | |
1127 | ascent = (int) (height * img->ascent / 100.0); | |
1128 | ||
1129 | return ascent; | |
1130 | } | |
1131 | ||
1132 | \f | |
1133 | /* Image background colors. */ | |
1134 | ||
1135 | /* Find the "best" corner color of a bitmap. | |
1136 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1137 | ||
1138 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1139 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1140 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1141 | { |
f0c77cd1 | 1142 | RGB_PIXEL_COLOR corner_pixels[4], best IF_LINT (= 0); |
4ef0d4d0 KS |
1143 | int i, best_count; |
1144 | ||
6ac3c7bb KS |
1145 | if (corners && corners[BOT_CORNER] >= 0) |
1146 | { | |
1147 | /* Get the colors at the corner_pixels of ximg. */ | |
1148 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1149 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1150 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1151 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | /* Get the colors at the corner_pixels of ximg. */ | |
1156 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1157 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1158 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1159 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1160 | } | |
4ef0d4d0 KS |
1161 | /* Choose the most frequently found color as background. */ |
1162 | for (i = best_count = 0; i < 4; ++i) | |
1163 | { | |
1164 | int j, n; | |
1165 | ||
1166 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1167 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1168 | ++n; |
1169 | ||
1170 | if (n > best_count) | |
6ac3c7bb | 1171 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1172 | } |
1173 | ||
1174 | return best; | |
1175 | } | |
1176 | ||
1177 | /* Portability macros */ | |
1178 | ||
1179 | #ifdef HAVE_NTGUI | |
1180 | ||
1181 | #define Destroy_Image(img_dc, prev) \ | |
1182 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) | |
1183 | ||
1184 | #define Free_Pixmap(display, pixmap) \ | |
1185 | DeleteObject (pixmap) | |
1186 | ||
edfda783 AR |
1187 | #elif defined (HAVE_NS) |
1188 | ||
1189 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1190 | ns_release_object (ximg) |
edfda783 AR |
1191 | |
1192 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1193 | ns_release_object (pixmap) |
edfda783 | 1194 | |
4ef0d4d0 KS |
1195 | #else |
1196 | ||
1197 | #define Destroy_Image(ximg, dummy) \ | |
1198 | XDestroyImage (ximg) | |
1199 | ||
1200 | #define Free_Pixmap(display, pixmap) \ | |
1201 | XFreePixmap (display, pixmap) | |
1202 | ||
edfda783 | 1203 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1204 | |
1205 | ||
1206 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1207 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1208 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1209 | use for the heuristic. */ |
4ef0d4d0 KS |
1210 | |
1211 | RGB_PIXEL_COLOR | |
d3da34e0 | 1212 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1213 | { |
1214 | if (! img->background_valid) | |
1215 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1216 | { | |
1217 | int free_ximg = !ximg; | |
1218 | #ifdef HAVE_NTGUI | |
1219 | HGDIOBJ prev; | |
1220 | #endif /* HAVE_NTGUI */ | |
1221 | ||
1222 | if (free_ximg) | |
1223 | { | |
1224 | #ifndef HAVE_NTGUI | |
1225 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1226 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1227 | #else | |
1228 | HDC frame_dc = get_frame_dc (f); | |
1229 | ximg = CreateCompatibleDC (frame_dc); | |
1230 | release_frame_dc (f, frame_dc); | |
1231 | prev = SelectObject (ximg, img->pixmap); | |
1232 | #endif /* !HAVE_NTGUI */ | |
1233 | } | |
1234 | ||
6ac3c7bb | 1235 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1236 | |
1237 | if (free_ximg) | |
1238 | Destroy_Image (ximg, prev); | |
1f026899 | 1239 | |
4ef0d4d0 KS |
1240 | img->background_valid = 1; |
1241 | } | |
1242 | ||
1243 | return img->background; | |
1244 | } | |
1245 | ||
1246 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1247 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1248 | existing XImage object to use for the heuristic. */ | |
1249 | ||
1250 | int | |
d3da34e0 | 1251 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1252 | { |
1253 | if (! img->background_transparent_valid) | |
1254 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1255 | { | |
1256 | if (img->mask) | |
1257 | { | |
1258 | int free_mask = !mask; | |
1259 | #ifdef HAVE_NTGUI | |
1260 | HGDIOBJ prev; | |
1261 | #endif /* HAVE_NTGUI */ | |
1262 | ||
1263 | if (free_mask) | |
1264 | { | |
1265 | #ifndef HAVE_NTGUI | |
1266 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1267 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1268 | #else | |
1269 | HDC frame_dc = get_frame_dc (f); | |
1270 | mask = CreateCompatibleDC (frame_dc); | |
1271 | release_frame_dc (f, frame_dc); | |
1272 | prev = SelectObject (mask, img->mask); | |
1273 | #endif /* HAVE_NTGUI */ | |
1274 | } | |
1275 | ||
1276 | img->background_transparent | |
6ac3c7bb | 1277 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1278 | |
1279 | if (free_mask) | |
1280 | Destroy_Image (mask, prev); | |
1281 | } | |
1282 | else | |
1283 | img->background_transparent = 0; | |
1284 | ||
1285 | img->background_transparent_valid = 1; | |
1286 | } | |
1287 | ||
1288 | return img->background_transparent; | |
1289 | } | |
1290 | ||
1291 | \f | |
1292 | /*********************************************************************** | |
1293 | Helper functions for X image types | |
1294 | ***********************************************************************/ | |
1295 | ||
f57e2426 J |
1296 | static void x_clear_image_1 (struct frame *, struct image *, int, |
1297 | int, int); | |
1298 | static void x_clear_image (struct frame *f, struct image *img); | |
1299 | static unsigned long x_alloc_image_color (struct frame *f, | |
1300 | struct image *img, | |
1301 | Lisp_Object color_name, | |
1302 | unsigned long dflt); | |
4ef0d4d0 KS |
1303 | |
1304 | ||
1305 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1306 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1307 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1308 | the image, if any. */ | |
1309 | ||
1310 | static void | |
d3da34e0 JB |
1311 | x_clear_image_1 (struct frame *f, struct image *img, int pixmap_p, int mask_p, |
1312 | int colors_p) | |
4ef0d4d0 KS |
1313 | { |
1314 | if (pixmap_p && img->pixmap) | |
1315 | { | |
1316 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1317 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1318 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1319 | img->background_valid = 0; |
1320 | } | |
1321 | ||
1322 | if (mask_p && img->mask) | |
1323 | { | |
1324 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1325 | img->mask = NO_PIXMAP; | |
1326 | img->background_transparent_valid = 0; | |
1327 | } | |
1328 | ||
1329 | if (colors_p && img->ncolors) | |
1330 | { | |
4ef0d4d0 KS |
1331 | /* W32_TODO: color table support. */ |
1332 | #ifdef HAVE_X_WINDOWS | |
1333 | x_free_colors (f, img->colors, img->ncolors); | |
1334 | #endif /* HAVE_X_WINDOWS */ | |
1335 | xfree (img->colors); | |
1336 | img->colors = NULL; | |
1337 | img->ncolors = 0; | |
1338 | } | |
c7fea325 | 1339 | |
4ef0d4d0 KS |
1340 | } |
1341 | ||
1342 | /* Free X resources of image IMG which is used on frame F. */ | |
1343 | ||
1344 | static void | |
d3da34e0 | 1345 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1346 | { |
1347 | BLOCK_INPUT; | |
1348 | x_clear_image_1 (f, img, 1, 1, 1); | |
1349 | UNBLOCK_INPUT; | |
1350 | } | |
1351 | ||
1352 | ||
1353 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1354 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1355 | IMG->colors, so that it can be freed again. Value is the pixel | |
1356 | color. */ | |
1357 | ||
1358 | static unsigned long | |
d3da34e0 JB |
1359 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1360 | unsigned long dflt) | |
4ef0d4d0 KS |
1361 | { |
1362 | XColor color; | |
1363 | unsigned long result; | |
1364 | ||
1365 | xassert (STRINGP (color_name)); | |
1366 | ||
42a5b22f | 1367 | if (x_defined_color (f, SSDATA (color_name), &color, 1)) |
4ef0d4d0 KS |
1368 | { |
1369 | /* This isn't called frequently so we get away with simply | |
1370 | reallocating the color vector to the needed size, here. */ | |
1371 | ++img->ncolors; | |
1372 | img->colors = | |
1373 | (unsigned long *) xrealloc (img->colors, | |
1374 | img->ncolors * sizeof *img->colors); | |
1375 | img->colors[img->ncolors - 1] = color.pixel; | |
1376 | result = color.pixel; | |
1377 | } | |
1378 | else | |
1379 | result = dflt; | |
1380 | ||
1381 | return result; | |
1382 | } | |
1383 | ||
1384 | ||
1385 | \f | |
1386 | /*********************************************************************** | |
1387 | Image Cache | |
1388 | ***********************************************************************/ | |
1389 | ||
f57e2426 J |
1390 | static void cache_image (struct frame *f, struct image *img); |
1391 | static void postprocess_image (struct frame *, struct image *); | |
4ef0d4d0 KS |
1392 | |
1393 | /* Return a new, initialized image cache that is allocated from the | |
1394 | heap. Call free_image_cache to free an image cache. */ | |
1395 | ||
1396 | struct image_cache * | |
d3da34e0 | 1397 | make_image_cache (void) |
4ef0d4d0 KS |
1398 | { |
1399 | struct image_cache *c = (struct image_cache *) xmalloc (sizeof *c); | |
1400 | int size; | |
1401 | ||
72af86bd | 1402 | memset (c, 0, sizeof *c); |
4ef0d4d0 KS |
1403 | c->size = 50; |
1404 | c->images = (struct image **) xmalloc (c->size * sizeof *c->images); | |
1405 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
1406 | c->buckets = (struct image **) xmalloc (size); | |
72af86bd | 1407 | memset (c->buckets, 0, size); |
4ef0d4d0 KS |
1408 | return c; |
1409 | } | |
1410 | ||
1411 | ||
d3c35d17 CY |
1412 | /* Find an image matching SPEC in the cache, and return it. If no |
1413 | image is found, return NULL. */ | |
1414 | static struct image * | |
0de4bb68 | 1415 | search_image_cache (struct frame *f, Lisp_Object spec, EMACS_UINT hash) |
483e7ae0 | 1416 | { |
91be6b66 | 1417 | struct image *img; |
354884c4 | 1418 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1419 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1420 | ||
8198352b CY |
1421 | if (!c) return NULL; |
1422 | ||
d3c35d17 CY |
1423 | /* If the image spec does not specify a background color, the cached |
1424 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1425 | The foreground color must also match, for the sake of monochrome |
1426 | images. | |
1427 | ||
1428 | In fact, we could ignore the foreground color matching condition | |
1429 | for color images, or if the image spec specifies :foreground; | |
1430 | similarly we could ignore the background color matching condition | |
1431 | for formats that don't use transparency (such as jpeg), or if the | |
1432 | image spec specifies :background. However, the extra memory | |
1433 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1434 | |
483e7ae0 | 1435 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1436 | if (img->hash == hash |
1437 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1438 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1439 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1440 | break; |
1441 | return img; | |
1442 | } | |
1443 | ||
1444 | ||
1445 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1446 | ||
1447 | static void | |
d3da34e0 | 1448 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1449 | { |
1450 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1451 | if (img) | |
be3faa80 CY |
1452 | { |
1453 | free_image (f, img); | |
1454 | /* As display glyphs may still be referring to the image ID, we | |
1455 | must garbage the frame (Bug#6426). */ | |
1456 | SET_FRAME_GARBAGED (f); | |
1457 | } | |
483e7ae0 CY |
1458 | } |
1459 | ||
1460 | ||
4ef0d4d0 KS |
1461 | /* Free image cache of frame F. Be aware that X frames share images |
1462 | caches. */ | |
1463 | ||
1464 | void | |
d3da34e0 | 1465 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1466 | { |
354884c4 | 1467 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1468 | if (c) |
1469 | { | |
1470 | int i; | |
1471 | ||
1472 | /* Cache should not be referenced by any frame when freed. */ | |
1473 | xassert (c->refcount == 0); | |
1474 | ||
1475 | for (i = 0; i < c->used; ++i) | |
1476 | free_image (f, c->images[i]); | |
1477 | xfree (c->images); | |
1478 | xfree (c->buckets); | |
1479 | xfree (c); | |
354884c4 | 1480 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1481 | } |
1482 | } | |
1483 | ||
1484 | ||
a2bc5bdd SM |
1485 | /* Clear image cache of frame F. FILTER=t means free all images. |
1486 | FILTER=nil means clear only images that haven't been | |
1487 | displayed for some time. | |
1488 | Else, only free the images which have FILTER in their `dependencies'. | |
1489 | Should be called from time to time to reduce the number of loaded images. | |
1490 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1491 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1492 | |
ce0ad53d | 1493 | static void |
a2bc5bdd | 1494 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1495 | { |
354884c4 | 1496 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1497 | |
98fe5161 | 1498 | if (c) |
4ef0d4d0 | 1499 | { |
98fe5161 | 1500 | int i, nfreed = 0; |
4ef0d4d0 KS |
1501 | |
1502 | /* Block input so that we won't be interrupted by a SIGIO | |
1503 | while being in an inconsistent state. */ | |
1504 | BLOCK_INPUT; | |
1505 | ||
98fe5161 CY |
1506 | if (!NILP (filter)) |
1507 | { | |
1508 | /* Filter image cache. */ | |
1509 | for (i = 0; i < c->used; ++i) | |
1510 | { | |
1511 | struct image *img = c->images[i]; | |
1512 | if (img && (EQ (Qt, filter) | |
1513 | || !NILP (Fmember (filter, img->dependencies)))) | |
1514 | { | |
1515 | free_image (f, img); | |
1516 | ++nfreed; | |
1517 | } | |
1518 | } | |
1519 | } | |
1520 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1521 | { |
98fe5161 CY |
1522 | /* Free cache based on timestamp. */ |
1523 | EMACS_TIME t; | |
d4e3e4d3 | 1524 | time_t old; |
98fe5161 CY |
1525 | int delay, nimages = 0; |
1526 | ||
1527 | for (i = 0; i < c->used; ++i) | |
1528 | if (c->images[i]) | |
1529 | nimages++; | |
1530 | ||
1531 | /* If the number of cached images has grown unusually large, | |
1532 | decrease the cache eviction delay (Bug#6230). */ | |
1533 | delay = XFASTINT (Vimage_cache_eviction_delay); | |
1534 | if (nimages > 40) | |
1535 | delay = max (1, 1600 * delay / (nimages*nimages)); | |
1536 | ||
1537 | EMACS_GET_TIME (t); | |
1538 | old = EMACS_SECS (t) - delay; | |
1539 | ||
1540 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1541 | { |
98fe5161 CY |
1542 | struct image *img = c->images[i]; |
1543 | if (img && img->timestamp < old) | |
1544 | { | |
1545 | free_image (f, img); | |
1546 | ++nfreed; | |
1547 | } | |
4ef0d4d0 KS |
1548 | } |
1549 | } | |
1550 | ||
1551 | /* We may be clearing the image cache because, for example, | |
1552 | Emacs was iconified for a longer period of time. In that | |
1553 | case, current matrices may still contain references to | |
1554 | images freed above. So, clear these matrices. */ | |
1555 | if (nfreed) | |
1556 | { | |
1557 | Lisp_Object tail, frame; | |
1558 | ||
1559 | FOR_EACH_FRAME (tail, frame) | |
1560 | { | |
6ae141d6 PE |
1561 | struct frame *fr = XFRAME (frame); |
1562 | if (FRAME_IMAGE_CACHE (fr) == c) | |
1563 | clear_current_matrices (fr); | |
4ef0d4d0 KS |
1564 | } |
1565 | ||
1566 | ++windows_or_buffers_changed; | |
1567 | } | |
1568 | ||
1569 | UNBLOCK_INPUT; | |
1570 | } | |
1571 | } | |
1572 | ||
354884c4 | 1573 | void |
a2bc5bdd | 1574 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1575 | { |
1576 | /* FIXME: We want to do | |
1577 | * struct terminal *t; | |
1578 | * for (t = terminal_list; t; t = t->next_terminal) | |
1579 | * clear_image_cache (t, filter); */ | |
1580 | Lisp_Object tail, frame; | |
1581 | FOR_EACH_FRAME (tail, frame) | |
1582 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1583 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1584 | } |
4ef0d4d0 KS |
1585 | |
1586 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1587 | 0, 1, 0, | |
a2bc5bdd SM |
1588 | doc: /* Clear the image cache. |
1589 | FILTER nil or a frame means clear all images in the selected frame. | |
1590 | FILTER t means clear the image caches of all frames. | |
1591 | Anything else, means only clear those images which refer to FILTER, | |
1592 | which is then usually a filename. */) | |
5842a27b | 1593 | (Lisp_Object filter) |
4ef0d4d0 | 1594 | { |
a2bc5bdd SM |
1595 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1596 | clear_image_caches (filter); | |
4ef0d4d0 | 1597 | else |
a2bc5bdd | 1598 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1599 | |
1600 | return Qnil; | |
1601 | } | |
1602 | ||
1603 | ||
110683ad | 1604 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1605 | 1, 2, 0, |
110683ad CY |
1606 | doc: /* Fush the image with specification SPEC on frame FRAME. |
1607 | This removes the image from the Emacs image cache. If SPEC specifies | |
1608 | an image file, the next redisplay of this image will read from the | |
1609 | current contents of that file. | |
1610 | ||
483e7ae0 CY |
1611 | FRAME nil or omitted means use the selected frame. |
1612 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1613 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1614 | { |
1615 | if (!valid_image_p (spec)) | |
1616 | error ("Invalid image specification"); | |
1617 | ||
1618 | if (EQ (frame, Qt)) | |
1619 | { | |
1620 | Lisp_Object tail; | |
1621 | FOR_EACH_FRAME (tail, frame) | |
1622 | { | |
1623 | struct frame *f = XFRAME (frame); | |
1624 | if (FRAME_WINDOW_P (f)) | |
1625 | uncache_image (f, spec); | |
1626 | } | |
1627 | } | |
1628 | else | |
1629 | uncache_image (check_x_frame (frame), spec); | |
1630 | ||
1631 | return Qnil; | |
1632 | } | |
1633 | ||
1634 | ||
4ef0d4d0 KS |
1635 | /* Compute masks and transform image IMG on frame F, as specified |
1636 | by the image's specification, */ | |
1637 | ||
1638 | static void | |
d3da34e0 | 1639 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1640 | { |
1641 | /* Manipulation of the image's mask. */ | |
1642 | if (img->pixmap) | |
1643 | { | |
1644 | Lisp_Object conversion, spec; | |
1645 | Lisp_Object mask; | |
1646 | ||
1647 | spec = img->spec; | |
1648 | ||
1649 | /* `:heuristic-mask t' | |
1650 | `:mask heuristic' | |
1651 | means build a mask heuristically. | |
1652 | `:heuristic-mask (R G B)' | |
1653 | `:mask (heuristic (R G B))' | |
1654 | means build a mask from color (R G B) in the | |
1655 | image. | |
1656 | `:mask nil' | |
1657 | means remove a mask, if any. */ | |
1658 | ||
1659 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1660 | if (!NILP (mask)) | |
1661 | x_build_heuristic_mask (f, img, mask); | |
1662 | else | |
1663 | { | |
1664 | int found_p; | |
1665 | ||
1666 | mask = image_spec_value (spec, QCmask, &found_p); | |
1667 | ||
1668 | if (EQ (mask, Qheuristic)) | |
1669 | x_build_heuristic_mask (f, img, Qt); | |
1670 | else if (CONSP (mask) | |
1671 | && EQ (XCAR (mask), Qheuristic)) | |
1672 | { | |
1673 | if (CONSP (XCDR (mask))) | |
1674 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1675 | else | |
1676 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1677 | } | |
1678 | else if (NILP (mask) && found_p && img->mask) | |
1679 | { | |
1680 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1681 | img->mask = NO_PIXMAP; | |
1682 | } | |
1683 | } | |
1684 | ||
1685 | ||
1686 | /* Should we apply an image transformation algorithm? */ | |
1687 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1688 | if (EQ (conversion, Qdisabled)) | |
1689 | x_disable_image (f, img); | |
1690 | else if (EQ (conversion, Qlaplace)) | |
1691 | x_laplace (f, img); | |
1692 | else if (EQ (conversion, Qemboss)) | |
1693 | x_emboss (f, img); | |
1694 | else if (CONSP (conversion) | |
1695 | && EQ (XCAR (conversion), Qedge_detection)) | |
1696 | { | |
1697 | Lisp_Object tem; | |
1698 | tem = XCDR (conversion); | |
1699 | if (CONSP (tem)) | |
1700 | x_edge_detection (f, img, | |
1701 | Fplist_get (tem, QCmatrix), | |
1702 | Fplist_get (tem, QCcolor_adjustment)); | |
1703 | } | |
1704 | } | |
1705 | } | |
1706 | ||
1707 | ||
1708 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1709 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1710 | ||
1711 | int | |
d3da34e0 | 1712 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1713 | { |
4ef0d4d0 | 1714 | struct image *img; |
0de4bb68 | 1715 | EMACS_UINT hash; |
4ef0d4d0 KS |
1716 | EMACS_TIME now; |
1717 | ||
1718 | /* F must be a window-system frame, and SPEC must be a valid image | |
1719 | specification. */ | |
1720 | xassert (FRAME_WINDOW_P (f)); | |
1721 | xassert (valid_image_p (spec)); | |
1722 | ||
4ef0d4d0 KS |
1723 | /* Look up SPEC in the hash table of the image cache. */ |
1724 | hash = sxhash (spec, 0); | |
d3c35d17 | 1725 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1726 | if (img && img->load_failed_p) |
1727 | { | |
1728 | free_image (f, img); | |
1729 | img = NULL; | |
1730 | } | |
1731 | ||
4ef0d4d0 KS |
1732 | /* If not found, create a new image and cache it. */ |
1733 | if (img == NULL) | |
1734 | { | |
4ef0d4d0 KS |
1735 | BLOCK_INPUT; |
1736 | img = make_image (spec, hash); | |
1737 | cache_image (f, img); | |
1738 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1739 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1740 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1741 | |
1742 | /* If we can't load the image, and we don't have a width and | |
1743 | height, use some arbitrary width and height so that we can | |
1744 | draw a rectangle for it. */ | |
1745 | if (img->load_failed_p) | |
1746 | { | |
1747 | Lisp_Object value; | |
1748 | ||
1749 | value = image_spec_value (spec, QCwidth, NULL); | |
1750 | img->width = (INTEGERP (value) | |
1751 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1752 | value = image_spec_value (spec, QCheight, NULL); | |
1753 | img->height = (INTEGERP (value) | |
1754 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1755 | } | |
1756 | else | |
1757 | { | |
1758 | /* Handle image type independent image attributes | |
1759 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1760 | `:background COLOR'. */ | |
1761 | Lisp_Object ascent, margin, relief, bg; | |
1762 | ||
1763 | ascent = image_spec_value (spec, QCascent, NULL); | |
1764 | if (INTEGERP (ascent)) | |
1765 | img->ascent = XFASTINT (ascent); | |
1766 | else if (EQ (ascent, Qcenter)) | |
1767 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1768 | ||
1769 | margin = image_spec_value (spec, QCmargin, NULL); | |
1770 | if (INTEGERP (margin) && XINT (margin) >= 0) | |
1771 | img->vmargin = img->hmargin = XFASTINT (margin); | |
1772 | else if (CONSP (margin) && INTEGERP (XCAR (margin)) | |
1773 | && INTEGERP (XCDR (margin))) | |
1774 | { | |
1775 | if (XINT (XCAR (margin)) > 0) | |
1776 | img->hmargin = XFASTINT (XCAR (margin)); | |
1777 | if (XINT (XCDR (margin)) > 0) | |
1778 | img->vmargin = XFASTINT (XCDR (margin)); | |
1779 | } | |
1780 | ||
1781 | relief = image_spec_value (spec, QCrelief, NULL); | |
1782 | if (INTEGERP (relief)) | |
1783 | { | |
1784 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1785 | img->hmargin += eabs (img->relief); |
1786 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1787 | } |
1788 | ||
1789 | if (! img->background_valid) | |
1790 | { | |
1791 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1792 | if (!NILP (bg)) | |
1793 | { | |
1794 | img->background | |
1795 | = x_alloc_image_color (f, img, bg, | |
1796 | FRAME_BACKGROUND_PIXEL (f)); | |
1797 | img->background_valid = 1; | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | /* Do image transformations and compute masks, unless we | |
1802 | don't have the image yet. */ | |
1803 | if (!EQ (*img->type->type, Qpostscript)) | |
1804 | postprocess_image (f, img); | |
1805 | } | |
1806 | ||
1807 | UNBLOCK_INPUT; | |
1808 | } | |
1809 | ||
1810 | /* We're using IMG, so set its timestamp to `now'. */ | |
1811 | EMACS_GET_TIME (now); | |
1812 | img->timestamp = EMACS_SECS (now); | |
1813 | ||
4ef0d4d0 KS |
1814 | /* Value is the image id. */ |
1815 | return img->id; | |
1816 | } | |
1817 | ||
1818 | ||
1819 | /* Cache image IMG in the image cache of frame F. */ | |
1820 | ||
1821 | static void | |
d3da34e0 | 1822 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1823 | { |
354884c4 | 1824 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1825 | int i; |
1826 | ||
1827 | /* Find a free slot in c->images. */ | |
1828 | for (i = 0; i < c->used; ++i) | |
1829 | if (c->images[i] == NULL) | |
1830 | break; | |
1831 | ||
1832 | /* If no free slot found, maybe enlarge c->images. */ | |
1833 | if (i == c->used && c->used == c->size) | |
1834 | { | |
1835 | c->size *= 2; | |
1836 | c->images = (struct image **) xrealloc (c->images, | |
1837 | c->size * sizeof *c->images); | |
1838 | } | |
1839 | ||
1840 | /* Add IMG to c->images, and assign IMG an id. */ | |
1841 | c->images[i] = img; | |
1842 | img->id = i; | |
1843 | if (i == c->used) | |
1844 | ++c->used; | |
1845 | ||
1846 | /* Add IMG to the cache's hash table. */ | |
1847 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1848 | img->next = c->buckets[i]; | |
1849 | if (img->next) | |
1850 | img->next->prev = img; | |
1851 | img->prev = NULL; | |
1852 | c->buckets[i] = img; | |
1853 | } | |
1854 | ||
1855 | ||
1856 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1857 | Lisp Objects in the image cache. */ | |
1858 | ||
354884c4 SM |
1859 | /* Mark Lisp objects in image IMG. */ |
1860 | ||
1861 | static void | |
d3da34e0 | 1862 | mark_image (struct image *img) |
354884c4 SM |
1863 | { |
1864 | mark_object (img->spec); | |
a2bc5bdd | 1865 | mark_object (img->dependencies); |
354884c4 SM |
1866 | |
1867 | if (!NILP (img->data.lisp_val)) | |
1868 | mark_object (img->data.lisp_val); | |
1869 | } | |
1870 | ||
1871 | ||
4ef0d4d0 | 1872 | void |
354884c4 | 1873 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1874 | { |
354884c4 | 1875 | if (c) |
4ef0d4d0 | 1876 | { |
354884c4 SM |
1877 | int i; |
1878 | for (i = 0; i < c->used; ++i) | |
1879 | if (c->images[i]) | |
1880 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1881 | } |
1882 | } | |
1883 | ||
1884 | ||
1885 | \f | |
1886 | /*********************************************************************** | |
9e2a2647 | 1887 | X / NS / W32 support code |
4ef0d4d0 KS |
1888 | ***********************************************************************/ |
1889 | ||
1890 | #ifdef HAVE_NTGUI | |
1891 | ||
1892 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
dbdb9a7c | 1893 | #define DEF_IMGLIB_FN(rettype,func,args) static rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1894 | |
1895 | /* Macro for loading those image functions from the library. */ | |
1896 | #define LOAD_IMGLIB_FN(lib,func) { \ | |
1897 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1898 | if (!fn_##func) return 0; \ | |
1899 | } | |
1900 | ||
1901 | #endif /* HAVE_NTGUI */ | |
1902 | ||
f57e2426 J |
1903 | static int x_create_x_image_and_pixmap (struct frame *, int, int, int, |
1904 | XImagePtr *, Pixmap *); | |
1905 | static void x_destroy_x_image (XImagePtr); | |
1906 | static void x_put_x_image (struct frame *, XImagePtr, Pixmap, int, int); | |
4ef0d4d0 KS |
1907 | |
1908 | ||
1909 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1910 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1911 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1912 | via xmalloc. Print error messages via image_error if an error | |
1913 | occurs. Value is non-zero if successful. | |
1914 | ||
1915 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1916 | should indicate the bit depth of the image. */ | |
1917 | ||
1918 | static int | |
d3da34e0 JB |
1919 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1920 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1921 | { |
1922 | #ifdef HAVE_X_WINDOWS | |
1923 | Display *display = FRAME_X_DISPLAY (f); | |
1924 | Window window = FRAME_X_WINDOW (f); | |
1925 | Screen *screen = FRAME_X_SCREEN (f); | |
1926 | ||
1927 | xassert (interrupt_input_blocked); | |
1928 | ||
1929 | if (depth <= 0) | |
1930 | depth = DefaultDepthOfScreen (screen); | |
1931 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1932 | depth, ZPixmap, 0, NULL, width, height, | |
1933 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1934 | if (*ximg == NULL) | |
1935 | { | |
1936 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1937 | return 0; | |
1938 | } | |
1939 | ||
1940 | /* Allocate image raster. */ | |
1941 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
1942 | ||
1943 | /* Allocate a pixmap of the same size. */ | |
1944 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1945 | if (*pixmap == NO_PIXMAP) | |
1946 | { | |
1947 | x_destroy_x_image (*ximg); | |
1948 | *ximg = NULL; | |
1949 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1950 | return 0; | |
1951 | } | |
1952 | ||
1953 | return 1; | |
1954 | #endif /* HAVE_X_WINDOWS */ | |
1955 | ||
1956 | #ifdef HAVE_NTGUI | |
1957 | ||
1958 | BITMAPINFOHEADER *header; | |
1959 | HDC hdc; | |
1960 | int scanline_width_bits; | |
1961 | int remainder; | |
1962 | int palette_colors = 0; | |
1963 | ||
1964 | if (depth == 0) | |
1965 | depth = 24; | |
1966 | ||
1967 | if (depth != 1 && depth != 4 && depth != 8 | |
1968 | && depth != 16 && depth != 24 && depth != 32) | |
1969 | { | |
1970 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
1971 | return 0; | |
1972 | } | |
1973 | ||
1974 | scanline_width_bits = width * depth; | |
1975 | remainder = scanline_width_bits % 32; | |
1976 | ||
1977 | if (remainder) | |
1978 | scanline_width_bits += 32 - remainder; | |
1979 | ||
1980 | /* Bitmaps with a depth less than 16 need a palette. */ | |
1981 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
1982 | if (depth < 16) | |
1983 | palette_colors = 1 << depth - 1; | |
1984 | ||
1985 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
1986 | if (*ximg == NULL) | |
1987 | { | |
1988 | image_error ("Unable to allocate memory for XImage", Qnil, Qnil); | |
1989 | return 0; | |
1990 | } | |
1991 | ||
72af86bd AS |
1992 | header = &(*ximg)->info.bmiHeader; |
1993 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
1994 | header->biSize = sizeof (*header); |
1995 | header->biWidth = width; | |
1996 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
1997 | header->biPlanes = 1; | |
1998 | header->biBitCount = depth; | |
1999 | header->biCompression = BI_RGB; | |
2000 | header->biClrUsed = palette_colors; | |
2001 | ||
2002 | /* TODO: fill in palette. */ | |
2003 | if (depth == 1) | |
2004 | { | |
2005 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2006 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2007 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2008 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2009 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2010 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2011 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2012 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2013 | } | |
2014 | ||
2015 | hdc = get_frame_dc (f); | |
2016 | ||
2017 | /* Create a DIBSection and raster array for the bitmap, | |
2018 | and store its handle in *pixmap. */ | |
2019 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2020 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2021 | /* casting avoids a GCC warning */ |
2022 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2023 | |
2024 | /* Realize display palette and garbage all frames. */ | |
2025 | release_frame_dc (f, hdc); | |
2026 | ||
2027 | if (*pixmap == NULL) | |
2028 | { | |
5fc9fdeb | 2029 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2030 | Lisp_Object errcode; |
2031 | /* All system errors are < 10000, so the following is safe. */ | |
2032 | XSETINT (errcode, (int) err); | |
2033 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); | |
2034 | x_destroy_x_image (*ximg); | |
2035 | return 0; | |
2036 | } | |
2037 | ||
2038 | return 1; | |
2039 | ||
2040 | #endif /* HAVE_NTGUI */ | |
2041 | ||
edfda783 | 2042 | #ifdef HAVE_NS |
ed3751c8 | 2043 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2044 | if (*pixmap == 0) |
2045 | { | |
2046 | *ximg = NULL; | |
2047 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2048 | return 0; | |
2049 | } | |
2050 | *ximg = *pixmap; | |
2051 | return 1; | |
2052 | #endif | |
4ef0d4d0 KS |
2053 | } |
2054 | ||
2055 | ||
2056 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2057 | ||
2058 | static void | |
d3da34e0 | 2059 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 KS |
2060 | { |
2061 | xassert (interrupt_input_blocked); | |
2062 | if (ximg) | |
2063 | { | |
2064 | #ifdef HAVE_X_WINDOWS | |
2065 | xfree (ximg->data); | |
2066 | ximg->data = NULL; | |
2067 | XDestroyImage (ximg); | |
2068 | #endif /* HAVE_X_WINDOWS */ | |
2069 | #ifdef HAVE_NTGUI | |
2070 | /* Data will be freed by DestroyObject. */ | |
2071 | ximg->data = NULL; | |
2072 | xfree (ximg); | |
2073 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2074 | #ifdef HAVE_NS |
ed3751c8 | 2075 | ns_release_object (ximg); |
edfda783 | 2076 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2077 | } |
2078 | } | |
2079 | ||
2080 | ||
2081 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2082 | are width and height of both the image and pixmap. */ | |
2083 | ||
2084 | static void | |
d3da34e0 | 2085 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2086 | { |
2087 | #ifdef HAVE_X_WINDOWS | |
2088 | GC gc; | |
2089 | ||
2090 | xassert (interrupt_input_blocked); | |
2091 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2092 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2093 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2094 | #endif /* HAVE_X_WINDOWS */ | |
2095 | ||
2096 | #ifdef HAVE_NTGUI | |
2097 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2098 | HDC hdc = get_frame_dc (f); | |
2099 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2100 | release_frame_dc (f, hdc); | |
2101 | #endif | |
2102 | #endif /* HAVE_NTGUI */ | |
2103 | ||
edfda783 AR |
2104 | #ifdef HAVE_NS |
2105 | xassert (ximg == pixmap); | |
ed3751c8 | 2106 | ns_retain_object (ximg); |
edfda783 | 2107 | #endif |
4ef0d4d0 KS |
2108 | } |
2109 | ||
2110 | \f | |
2111 | /*********************************************************************** | |
2112 | File Handling | |
2113 | ***********************************************************************/ | |
2114 | ||
f57e2426 | 2115 | static unsigned char *slurp_file (char *, int *); |
4ef0d4d0 KS |
2116 | |
2117 | ||
6678dc11 | 2118 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2119 | x-bitmap-file-path. Value is the encoded full name of the file |
2120 | found, or nil if not found. */ | |
4ef0d4d0 | 2121 | |
c640aa9b | 2122 | Lisp_Object |
d3da34e0 | 2123 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2124 | { |
2125 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2126 | int fd; |
2127 | ||
6678dc11 GM |
2128 | /* TODO I think this should use something like image-load-path |
2129 | instead. Unfortunately, that can contain non-string elements. */ | |
2130 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2131 | Vdata_directory), | |
2132 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2133 | |
050b82f6 | 2134 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2135 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2136 | ||
2137 | if (fd == -1) | |
2138 | file_found = Qnil; | |
2139 | else | |
022af124 KH |
2140 | { |
2141 | file_found = ENCODE_FILE (file_found); | |
2142 | close (fd); | |
2143 | } | |
4ef0d4d0 | 2144 | |
4ef0d4d0 KS |
2145 | return file_found; |
2146 | } | |
2147 | ||
2148 | ||
2149 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2150 | with xmalloc holding FILE's contents. Value is null if an error | |
2151 | occurred. *SIZE is set to the size of the file. */ | |
2152 | ||
2153 | static unsigned char * | |
d3da34e0 | 2154 | slurp_file (char *file, int *size) |
4ef0d4d0 KS |
2155 | { |
2156 | FILE *fp = NULL; | |
2157 | unsigned char *buf = NULL; | |
2158 | struct stat st; | |
2159 | ||
2160 | if (stat (file, &st) == 0 | |
2161 | && (fp = fopen (file, "rb")) != NULL | |
fa8459a3 | 2162 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2163 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2164 | { | |
2165 | *size = st.st_size; | |
2166 | fclose (fp); | |
2167 | } | |
2168 | else | |
2169 | { | |
2170 | if (fp) | |
2171 | fclose (fp); | |
2172 | if (buf) | |
2173 | { | |
2174 | xfree (buf); | |
2175 | buf = NULL; | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | return buf; | |
2180 | } | |
2181 | ||
2182 | ||
2183 | \f | |
4ef0d4d0 KS |
2184 | /*********************************************************************** |
2185 | XBM images | |
2186 | ***********************************************************************/ | |
2187 | ||
f57e2426 J |
2188 | static int xbm_scan (unsigned char **, unsigned char *, char *, int *); |
2189 | static int xbm_load (struct frame *f, struct image *img); | |
2190 | static int xbm_load_image (struct frame *f, struct image *img, | |
2191 | unsigned char *, unsigned char *); | |
2192 | static int xbm_image_p (Lisp_Object object); | |
2193 | static int xbm_read_bitmap_data (struct frame *f, | |
2194 | unsigned char *, unsigned char *, | |
b8dc29e9 | 2195 | int *, int *, char **, int); |
f57e2426 | 2196 | static int xbm_file_p (Lisp_Object); |
4ef0d4d0 KS |
2197 | |
2198 | ||
2199 | /* Indices of image specification fields in xbm_format, below. */ | |
2200 | ||
2201 | enum xbm_keyword_index | |
2202 | { | |
2203 | XBM_TYPE, | |
2204 | XBM_FILE, | |
2205 | XBM_WIDTH, | |
2206 | XBM_HEIGHT, | |
2207 | XBM_DATA, | |
2208 | XBM_FOREGROUND, | |
2209 | XBM_BACKGROUND, | |
2210 | XBM_ASCENT, | |
2211 | XBM_MARGIN, | |
2212 | XBM_RELIEF, | |
2213 | XBM_ALGORITHM, | |
2214 | XBM_HEURISTIC_MASK, | |
2215 | XBM_MASK, | |
2216 | XBM_LAST | |
2217 | }; | |
2218 | ||
2219 | /* Vector of image_keyword structures describing the format | |
2220 | of valid XBM image specifications. */ | |
2221 | ||
91433552 | 2222 | static const struct image_keyword xbm_format[XBM_LAST] = |
4ef0d4d0 KS |
2223 | { |
2224 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2225 | {":file", IMAGE_STRING_VALUE, 0}, | |
2226 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2227 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2228 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2229 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2230 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2231 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
2232 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
2233 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
2234 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2235 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2236 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2237 | }; | |
2238 | ||
2239 | /* Structure describing the image type XBM. */ | |
2240 | ||
2241 | static struct image_type xbm_type = | |
2242 | { | |
2243 | &Qxbm, | |
2244 | xbm_image_p, | |
2245 | xbm_load, | |
2246 | x_clear_image, | |
2247 | NULL | |
2248 | }; | |
2249 | ||
2250 | /* Tokens returned from xbm_scan. */ | |
2251 | ||
2252 | enum xbm_token | |
2253 | { | |
2254 | XBM_TK_IDENT = 256, | |
2255 | XBM_TK_NUMBER | |
2256 | }; | |
2257 | ||
2258 | ||
2259 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2260 | A valid specification is a list starting with the symbol `image' | |
2261 | The rest of the list is a property list which must contain an | |
2262 | entry `:type xbm.. | |
2263 | ||
2264 | If the specification specifies a file to load, it must contain | |
2265 | an entry `:file FILENAME' where FILENAME is a string. | |
2266 | ||
2267 | If the specification is for a bitmap loaded from memory it must | |
2268 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2269 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2270 | ||
2271 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2272 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2273 | ||
2274 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2275 | ||
2276 | 3. a vector of strings or bool-vectors, one for each line of the | |
2277 | bitmap. | |
2278 | ||
bbe6f2aa | 2279 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2280 | may not be specified in this case because they are defined in the |
2281 | XBM file. | |
2282 | ||
2283 | Both the file and data forms may contain the additional entries | |
2284 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2285 | foreground and background of the frame on which the image is | |
2286 | displayed is used. */ | |
2287 | ||
2288 | static int | |
d3da34e0 | 2289 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2290 | { |
2291 | struct image_keyword kw[XBM_LAST]; | |
2292 | ||
72af86bd | 2293 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2294 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2295 | return 0; | |
2296 | ||
2297 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2298 | ||
2299 | if (kw[XBM_FILE].count) | |
2300 | { | |
2301 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2302 | return 0; | |
2303 | } | |
2304 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2305 | { | |
2306 | /* In-memory XBM file. */ | |
2307 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2308 | return 0; | |
2309 | } | |
2310 | else | |
2311 | { | |
2312 | Lisp_Object data; | |
2313 | int width, height; | |
2314 | ||
2315 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2316 | if (!kw[XBM_WIDTH].count | |
2317 | || !kw[XBM_HEIGHT].count | |
2318 | || !kw[XBM_DATA].count) | |
2319 | return 0; | |
2320 | ||
2321 | data = kw[XBM_DATA].value; | |
2322 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2323 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2324 | ||
2325 | /* Check type of data, and width and height against contents of | |
2326 | data. */ | |
2327 | if (VECTORP (data)) | |
2328 | { | |
2329 | int i; | |
2330 | ||
2331 | /* Number of elements of the vector must be >= height. */ | |
77b37c05 | 2332 | if (ASIZE (data) < height) |
4ef0d4d0 KS |
2333 | return 0; |
2334 | ||
2335 | /* Each string or bool-vector in data must be large enough | |
2336 | for one line of the image. */ | |
2337 | for (i = 0; i < height; ++i) | |
2338 | { | |
2339 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2340 | ||
2341 | if (STRINGP (elt)) | |
2342 | { | |
2343 | if (SCHARS (elt) | |
2344 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2345 | return 0; | |
2346 | } | |
2347 | else if (BOOL_VECTOR_P (elt)) | |
2348 | { | |
2349 | if (XBOOL_VECTOR (elt)->size < width) | |
2350 | return 0; | |
2351 | } | |
2352 | else | |
2353 | return 0; | |
2354 | } | |
2355 | } | |
2356 | else if (STRINGP (data)) | |
2357 | { | |
2358 | if (SCHARS (data) | |
2359 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2360 | return 0; | |
2361 | } | |
2362 | else if (BOOL_VECTOR_P (data)) | |
2363 | { | |
2364 | if (XBOOL_VECTOR (data)->size < width * height) | |
2365 | return 0; | |
2366 | } | |
2367 | else | |
2368 | return 0; | |
2369 | } | |
2370 | ||
2371 | return 1; | |
2372 | } | |
2373 | ||
2374 | ||
2375 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2376 | either an enumerator from enum xbm_token, or a character for a | |
2377 | single-character token, or 0 at end of file. If scanning an | |
2378 | identifier, store the lexeme of the identifier in SVAL. If | |
2379 | scanning a number, store its value in *IVAL. */ | |
2380 | ||
2381 | static int | |
d3da34e0 | 2382 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2383 | { |
2384 | unsigned int c; | |
2385 | ||
2386 | loop: | |
2387 | ||
2388 | /* Skip white space. */ | |
2389 | while (*s < end && (c = *(*s)++, isspace (c))) | |
2390 | ; | |
2391 | ||
2392 | if (*s >= end) | |
2393 | c = 0; | |
2394 | else if (isdigit (c)) | |
2395 | { | |
2396 | int value = 0, digit; | |
2397 | ||
2398 | if (c == '0' && *s < end) | |
2399 | { | |
2400 | c = *(*s)++; | |
2401 | if (c == 'x' || c == 'X') | |
2402 | { | |
2403 | while (*s < end) | |
2404 | { | |
2405 | c = *(*s)++; | |
2406 | if (isdigit (c)) | |
2407 | digit = c - '0'; | |
2408 | else if (c >= 'a' && c <= 'f') | |
2409 | digit = c - 'a' + 10; | |
2410 | else if (c >= 'A' && c <= 'F') | |
2411 | digit = c - 'A' + 10; | |
2412 | else | |
2413 | break; | |
2414 | value = 16 * value + digit; | |
2415 | } | |
2416 | } | |
2417 | else if (isdigit (c)) | |
2418 | { | |
2419 | value = c - '0'; | |
2420 | while (*s < end | |
2421 | && (c = *(*s)++, isdigit (c))) | |
2422 | value = 8 * value + c - '0'; | |
2423 | } | |
2424 | } | |
2425 | else | |
2426 | { | |
2427 | value = c - '0'; | |
2428 | while (*s < end | |
2429 | && (c = *(*s)++, isdigit (c))) | |
2430 | value = 10 * value + c - '0'; | |
2431 | } | |
2432 | ||
2433 | if (*s < end) | |
2434 | *s = *s - 1; | |
2435 | *ival = value; | |
2436 | c = XBM_TK_NUMBER; | |
2437 | } | |
2438 | else if (isalpha (c) || c == '_') | |
2439 | { | |
2440 | *sval++ = c; | |
2441 | while (*s < end | |
2442 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
2443 | *sval++ = c; | |
2444 | *sval = 0; | |
2445 | if (*s < end) | |
2446 | *s = *s - 1; | |
2447 | c = XBM_TK_IDENT; | |
2448 | } | |
2449 | else if (c == '/' && **s == '*') | |
2450 | { | |
2451 | /* C-style comment. */ | |
2452 | ++*s; | |
2453 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2454 | ++*s; | |
2455 | if (**s) | |
2456 | { | |
2457 | *s += 2; | |
2458 | goto loop; | |
2459 | } | |
2460 | } | |
2461 | ||
2462 | return c; | |
2463 | } | |
2464 | ||
2465 | #ifdef HAVE_NTGUI | |
2466 | ||
2467 | /* Create a Windows bitmap from X bitmap data. */ | |
2468 | static HBITMAP | |
2469 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2470 | { | |
2471 | static unsigned char swap_nibble[16] | |
2472 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2473 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2474 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2475 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2476 | int i, j, w1, w2; | |
2477 | unsigned char *bits, *p; | |
2478 | HBITMAP bmp; | |
2479 | ||
2480 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2481 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
2482 | bits = (unsigned char *) alloca (height * w2); | |
72af86bd | 2483 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2484 | for (i = 0; i < height; i++) |
2485 | { | |
2486 | p = bits + i*w2; | |
2487 | for (j = 0; j < w1; j++) | |
2488 | { | |
2489 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2490 | unsigned char c = *data++; | |
2491 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2492 | | (swap_nibble[(c>>4) & 0xf])); | |
2493 | } | |
2494 | } | |
2495 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2496 | ||
2497 | return bmp; | |
2498 | } | |
2499 | ||
3046a84b | 2500 | static void |
7c3320d8 JB |
2501 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2502 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2503 | { |
2504 | HDC hdc, old_img_dc, new_img_dc; | |
2505 | HGDIOBJ old_prev, new_prev; | |
2506 | HBITMAP new_pixmap; | |
2507 | ||
2508 | hdc = get_frame_dc (f); | |
2509 | old_img_dc = CreateCompatibleDC (hdc); | |
2510 | new_img_dc = CreateCompatibleDC (hdc); | |
2511 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2512 | release_frame_dc (f, hdc); | |
2513 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2514 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2515 | /* Windows convention for mono bitmaps is black = background, |
2516 | white = foreground. */ | |
2386b1f1 JR |
2517 | SetTextColor (new_img_dc, background); |
2518 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2519 | |
2520 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2521 | 0, 0, SRCCOPY); | |
2522 | ||
2523 | SelectObject (old_img_dc, old_prev); | |
2524 | SelectObject (new_img_dc, new_prev); | |
2525 | DeleteDC (old_img_dc); | |
2526 | DeleteDC (new_img_dc); | |
2527 | DeleteObject (img->pixmap); | |
2528 | if (new_pixmap == 0) | |
2529 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2530 | else | |
2531 | img->pixmap = new_pixmap; | |
2532 | } | |
2533 | ||
2534 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2535 | ||
2536 | #else | |
2537 | ||
2538 | #define XBM_BIT_SHUFFLE(b) (b) | |
2539 | ||
2540 | #endif /* HAVE_NTGUI */ | |
2541 | ||
2542 | ||
2543 | static void | |
d3da34e0 JB |
2544 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2545 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
2546 | int non_default_colors) | |
4ef0d4d0 KS |
2547 | { |
2548 | #ifdef HAVE_NTGUI | |
2549 | img->pixmap | |
2550 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2551 | ||
2552 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2553 | if (non_default_colors) | |
2554 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2555 | |
2556 | #elif defined (HAVE_NS) | |
ed3751c8 | 2557 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2558 | |
4ef0d4d0 KS |
2559 | #else |
2560 | img->pixmap | |
2561 | = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
2562 | FRAME_X_WINDOW (f), | |
2563 | data, | |
2564 | img->width, img->height, | |
2565 | fg, bg, | |
2566 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
edfda783 | 2567 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2568 | } |
2569 | ||
2570 | ||
2571 | ||
2572 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2573 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2574 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2575 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
2576 | Value is non-zero if successful. DATA null means just test if | |
ce959360 CY |
2577 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR |
2578 | is non-zero, inhibit the call to image_error when the image size is | |
2579 | invalid (the bitmap remains unread). */ | |
4ef0d4d0 KS |
2580 | |
2581 | static int | |
d3da34e0 | 2582 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2583 | int *width, int *height, char **data, |
d3da34e0 | 2584 | int inhibit_image_error) |
4ef0d4d0 KS |
2585 | { |
2586 | unsigned char *s = contents; | |
2587 | char buffer[BUFSIZ]; | |
2588 | int padding_p = 0; | |
2589 | int v10 = 0; | |
2590 | int bytes_per_line, i, nbytes; | |
b8dc29e9 | 2591 | char *p; |
4ef0d4d0 KS |
2592 | int value; |
2593 | int LA1; | |
2594 | ||
2595 | #define match() \ | |
2596 | LA1 = xbm_scan (&s, end, buffer, &value) | |
2597 | ||
2598 | #define expect(TOKEN) \ | |
2599 | if (LA1 != (TOKEN)) \ | |
2600 | goto failure; \ | |
2601 | else \ | |
2602 | match () | |
2603 | ||
2604 | #define expect_ident(IDENT) \ | |
2605 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ | |
2606 | match (); \ | |
2607 | else \ | |
2608 | goto failure | |
2609 | ||
2610 | *width = *height = -1; | |
2611 | if (data) | |
2612 | *data = NULL; | |
2613 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2614 | ||
2615 | /* Parse defines for width, height and hot-spots. */ | |
2616 | while (LA1 == '#') | |
2617 | { | |
2618 | match (); | |
2619 | expect_ident ("define"); | |
2620 | expect (XBM_TK_IDENT); | |
2621 | ||
431feaf6 | 2622 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 | 2623 | { |
6ae141d6 PE |
2624 | char *q = strrchr (buffer, '_'); |
2625 | q = q ? q + 1 : buffer; | |
2626 | if (strcmp (q, "width") == 0) | |
4ef0d4d0 | 2627 | *width = value; |
6ae141d6 | 2628 | else if (strcmp (q, "height") == 0) |
4ef0d4d0 KS |
2629 | *height = value; |
2630 | } | |
2631 | expect (XBM_TK_NUMBER); | |
2632 | } | |
2633 | ||
f1f25b99 | 2634 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2635 | { |
ce959360 CY |
2636 | if (!inhibit_image_error) |
2637 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2638 | goto failure; |
2639 | } | |
4ef0d4d0 KS |
2640 | else if (data == NULL) |
2641 | goto success; | |
2642 | ||
2643 | /* Parse bits. Must start with `static'. */ | |
2644 | expect_ident ("static"); | |
2645 | if (LA1 == XBM_TK_IDENT) | |
2646 | { | |
2647 | if (strcmp (buffer, "unsigned") == 0) | |
2648 | { | |
2649 | match (); | |
2650 | expect_ident ("char"); | |
2651 | } | |
2652 | else if (strcmp (buffer, "short") == 0) | |
2653 | { | |
2654 | match (); | |
2655 | v10 = 1; | |
2656 | if (*width % 16 && *width % 16 < 9) | |
2657 | padding_p = 1; | |
2658 | } | |
2659 | else if (strcmp (buffer, "char") == 0) | |
2660 | match (); | |
2661 | else | |
2662 | goto failure; | |
2663 | } | |
2664 | else | |
2665 | goto failure; | |
2666 | ||
2667 | expect (XBM_TK_IDENT); | |
2668 | expect ('['); | |
2669 | expect (']'); | |
2670 | expect ('='); | |
2671 | expect ('{'); | |
2672 | ||
2673 | bytes_per_line = (*width + 7) / 8 + padding_p; | |
2674 | nbytes = bytes_per_line * *height; | |
b8dc29e9 | 2675 | p = *data = (char *) xmalloc (nbytes); |
4ef0d4d0 KS |
2676 | |
2677 | if (v10) | |
2678 | { | |
2679 | for (i = 0; i < nbytes; i += 2) | |
2680 | { | |
2681 | int val = value; | |
2682 | expect (XBM_TK_NUMBER); | |
2683 | ||
2684 | *p++ = XBM_BIT_SHUFFLE (val); | |
2685 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2686 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2687 | ||
2688 | if (LA1 == ',' || LA1 == '}') | |
2689 | match (); | |
2690 | else | |
2691 | goto failure; | |
2692 | } | |
2693 | } | |
2694 | else | |
2695 | { | |
2696 | for (i = 0; i < nbytes; ++i) | |
2697 | { | |
2698 | int val = value; | |
2699 | expect (XBM_TK_NUMBER); | |
2700 | ||
2701 | *p++ = XBM_BIT_SHUFFLE (val); | |
2702 | ||
2703 | if (LA1 == ',' || LA1 == '}') | |
2704 | match (); | |
2705 | else | |
2706 | goto failure; | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | success: | |
2711 | return 1; | |
2712 | ||
2713 | failure: | |
2714 | ||
2715 | if (data && *data) | |
2716 | { | |
2717 | xfree (*data); | |
2718 | *data = NULL; | |
2719 | } | |
2720 | return 0; | |
2721 | ||
2722 | #undef match | |
2723 | #undef expect | |
2724 | #undef expect_ident | |
2725 | } | |
2726 | ||
2727 | ||
2728 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
2729 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
2730 | successful. */ | |
2731 | ||
2732 | static int | |
d3da34e0 JB |
2733 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2734 | unsigned char *end) | |
4ef0d4d0 KS |
2735 | { |
2736 | int rc; | |
b8dc29e9 | 2737 | char *data; |
4ef0d4d0 KS |
2738 | int success_p = 0; |
2739 | ||
ce959360 CY |
2740 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2741 | &data, 0); | |
4ef0d4d0 KS |
2742 | if (rc) |
2743 | { | |
2744 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2745 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2746 | int non_default_colors = 0; | |
2747 | Lisp_Object value; | |
2748 | ||
2749 | xassert (img->width > 0 && img->height > 0); | |
2750 | ||
2751 | /* Get foreground and background colors, maybe allocate colors. */ | |
2752 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2753 | if (!NILP (value)) | |
2754 | { | |
2755 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2756 | non_default_colors = 1; | |
2757 | } | |
2758 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2759 | if (!NILP (value)) | |
2760 | { | |
2761 | background = x_alloc_image_color (f, img, value, background); | |
2762 | img->background = background; | |
2763 | img->background_valid = 1; | |
2764 | non_default_colors = 1; | |
2765 | } | |
2766 | ||
1f026899 | 2767 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2768 | foreground, background, |
2769 | non_default_colors); | |
2770 | xfree (data); | |
2771 | ||
2772 | if (img->pixmap == NO_PIXMAP) | |
2773 | { | |
2774 | x_clear_image (f, img); | |
2775 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2776 | } | |
2777 | else | |
2778 | success_p = 1; | |
2779 | } | |
2780 | else | |
2781 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2782 | ||
2783 | return success_p; | |
2784 | } | |
2785 | ||
2786 | ||
2787 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
2788 | ||
2789 | static int | |
d3da34e0 | 2790 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2791 | { |
2792 | int w, h; | |
2793 | return (STRINGP (data) | |
f1f25b99 | 2794 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2795 | (SDATA (data) + SBYTES (data)), |
2796 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2797 | } |
2798 | ||
2799 | ||
2800 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
2801 | non-zero if successful. */ | |
2802 | ||
2803 | static int | |
d3da34e0 | 2804 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
2805 | { |
2806 | int success_p = 0; | |
2807 | Lisp_Object file_name; | |
2808 | ||
2809 | xassert (xbm_image_p (img->spec)); | |
2810 | ||
2811 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2812 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2813 | if (STRINGP (file_name)) | |
2814 | { | |
2815 | Lisp_Object file; | |
2816 | unsigned char *contents; | |
2817 | int size; | |
4ef0d4d0 KS |
2818 | |
2819 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2820 | if (!STRINGP (file)) |
2821 | { | |
2822 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2823 | return 0; |
2824 | } | |
2825 | ||
42a5b22f | 2826 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2827 | if (contents == NULL) |
2828 | { | |
2829 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2830 | return 0; |
2831 | } | |
2832 | ||
2833 | success_p = xbm_load_image (f, img, contents, contents + size); | |
4ef0d4d0 KS |
2834 | } |
2835 | else | |
2836 | { | |
2837 | struct image_keyword fmt[XBM_LAST]; | |
2838 | Lisp_Object data; | |
2839 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2840 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2841 | int non_default_colors = 0; | |
2842 | char *bits; | |
2843 | int parsed_p; | |
2844 | int in_memory_file_p = 0; | |
2845 | ||
2846 | /* See if data looks like an in-memory XBM file. */ | |
2847 | data = image_spec_value (img->spec, QCdata, NULL); | |
2848 | in_memory_file_p = xbm_file_p (data); | |
2849 | ||
2850 | /* Parse the image specification. */ | |
72af86bd | 2851 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 | 2852 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
35fa624f | 2853 | (void) parsed_p; |
4ef0d4d0 KS |
2854 | xassert (parsed_p); |
2855 | ||
2856 | /* Get specified width, and height. */ | |
2857 | if (!in_memory_file_p) | |
2858 | { | |
2859 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2860 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
2861 | xassert (img->width > 0 && img->height > 0); | |
2862 | } | |
2863 | ||
2864 | /* Get foreground and background colors, maybe allocate colors. */ | |
2865 | if (fmt[XBM_FOREGROUND].count | |
2866 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2867 | { | |
2868 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2869 | foreground); | |
2870 | non_default_colors = 1; | |
2871 | } | |
2872 | ||
2873 | if (fmt[XBM_BACKGROUND].count | |
2874 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2875 | { | |
2876 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2877 | background); | |
2878 | non_default_colors = 1; | |
2879 | } | |
2880 | ||
2881 | if (in_memory_file_p) | |
2882 | success_p = xbm_load_image (f, img, SDATA (data), | |
2883 | (SDATA (data) | |
2884 | + SBYTES (data))); | |
2885 | else | |
2886 | { | |
2887 | if (VECTORP (data)) | |
2888 | { | |
2889 | int i; | |
2890 | char *p; | |
2891 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2892 | ||
2893 | p = bits = (char *) alloca (nbytes * img->height); | |
2894 | for (i = 0; i < img->height; ++i, p += nbytes) | |
2895 | { | |
2896 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
2897 | if (STRINGP (line)) | |
72af86bd | 2898 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2899 | else |
72af86bd | 2900 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2901 | } |
2902 | } | |
2903 | else if (STRINGP (data)) | |
42a5b22f | 2904 | bits = SSDATA (data); |
4ef0d4d0 | 2905 | else |
b8dc29e9 | 2906 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2907 | |
44b1dc2e JR |
2908 | #ifdef WINDOWSNT |
2909 | { | |
2910 | char *invertedBits; | |
2911 | int nbytes, i; | |
2912 | /* Windows mono bitmaps are reversed compared with X. */ | |
2913 | invertedBits = bits; | |
285d07e2 | 2914 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2915 | * img->height; |
ed3751c8 | 2916 | bits = (char *) alloca (nbytes); |
44b1dc2e JR |
2917 | for (i = 0; i < nbytes; i++) |
2918 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2919 | } | |
2920 | #endif | |
4ef0d4d0 KS |
2921 | /* Create the pixmap. */ |
2922 | ||
2923 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2924 | foreground, background, | |
2925 | non_default_colors); | |
2926 | if (img->pixmap) | |
2927 | success_p = 1; | |
2928 | else | |
2929 | { | |
2930 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2931 | img->spec, Qnil); | |
2932 | x_clear_image (f, img); | |
2933 | } | |
2934 | } | |
2935 | } | |
2936 | ||
2937 | return success_p; | |
2938 | } | |
2939 | ||
2940 | ||
2941 | \f | |
2942 | /*********************************************************************** | |
2943 | XPM images | |
2944 | ***********************************************************************/ | |
2945 | ||
9e2a2647 | 2946 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2947 | |
f57e2426 J |
2948 | static int xpm_image_p (Lisp_Object object); |
2949 | static int xpm_load (struct frame *f, struct image *img); | |
2950 | static int xpm_valid_color_symbols_p (Lisp_Object); | |
4ef0d4d0 | 2951 | |
9e2a2647 | 2952 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
2953 | |
2954 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
2955 | #ifdef HAVE_NTGUI |
2956 | /* Indicate to xpm.h that we don't have Xlib. */ | |
2957 | #define FOR_MSW | |
2958 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 2959 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
2960 | #define XColor xpm_XColor |
2961 | #define XImage xpm_XImage | |
279d3293 | 2962 | #define Display xpm_Display |
4ef0d4d0 KS |
2963 | #define PIXEL_ALREADY_TYPEDEFED |
2964 | #include "X11/xpm.h" | |
2965 | #undef FOR_MSW | |
2966 | #undef XColor | |
2967 | #undef XImage | |
279d3293 | 2968 | #undef Display |
4ef0d4d0 KS |
2969 | #undef PIXEL_ALREADY_TYPEDEFED |
2970 | #else | |
2971 | #include "X11/xpm.h" | |
2972 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 2973 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 2974 | |
9e2a2647 | 2975 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
2976 | /* The symbol `xpm' identifying XPM-format images. */ |
2977 | ||
955cbe7b | 2978 | static Lisp_Object Qxpm; |
4ef0d4d0 KS |
2979 | |
2980 | /* Indices of image specification fields in xpm_format, below. */ | |
2981 | ||
2982 | enum xpm_keyword_index | |
2983 | { | |
2984 | XPM_TYPE, | |
2985 | XPM_FILE, | |
2986 | XPM_DATA, | |
2987 | XPM_ASCENT, | |
2988 | XPM_MARGIN, | |
2989 | XPM_RELIEF, | |
2990 | XPM_ALGORITHM, | |
2991 | XPM_HEURISTIC_MASK, | |
2992 | XPM_MASK, | |
2993 | XPM_COLOR_SYMBOLS, | |
2994 | XPM_BACKGROUND, | |
2995 | XPM_LAST | |
2996 | }; | |
2997 | ||
2998 | /* Vector of image_keyword structures describing the format | |
2999 | of valid XPM image specifications. */ | |
3000 | ||
91433552 | 3001 | static const struct image_keyword xpm_format[XPM_LAST] = |
4ef0d4d0 KS |
3002 | { |
3003 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3004 | {":file", IMAGE_STRING_VALUE, 0}, | |
3005 | {":data", IMAGE_STRING_VALUE, 0}, | |
3006 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
3007 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
3008 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
3009 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3010 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3011 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3012 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3013 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3014 | }; | |
3015 | ||
3016 | /* Structure describing the image type XPM. */ | |
3017 | ||
3018 | static struct image_type xpm_type = | |
3019 | { | |
3020 | &Qxpm, | |
3021 | xpm_image_p, | |
3022 | xpm_load, | |
3023 | x_clear_image, | |
3024 | NULL | |
3025 | }; | |
3026 | ||
3027 | #ifdef HAVE_X_WINDOWS | |
3028 | ||
3029 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3030 | functions for allocating image colors. Our own functions handle | |
3031 | color allocation failures more gracefully than the ones on the XPM | |
3032 | lib. */ | |
3033 | ||
3034 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3035 | #define ALLOC_XPM_COLORS | |
3036 | #endif | |
3037 | #endif /* HAVE_X_WINDOWS */ | |
3038 | ||
3039 | #ifdef ALLOC_XPM_COLORS | |
3040 | ||
f57e2426 J |
3041 | static void xpm_init_color_cache (struct frame *, XpmAttributes *); |
3042 | static void xpm_free_color_cache (void); | |
3043 | static int xpm_lookup_color (struct frame *, char *, XColor *); | |
3044 | static int xpm_color_bucket (char *); | |
3045 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, | |
3046 | XColor *, int); | |
4ef0d4d0 KS |
3047 | |
3048 | /* An entry in a hash table used to cache color definitions of named | |
3049 | colors. This cache is necessary to speed up XPM image loading in | |
3050 | case we do color allocations ourselves. Without it, we would need | |
3051 | a call to XParseColor per pixel in the image. */ | |
3052 | ||
3053 | struct xpm_cached_color | |
3054 | { | |
3055 | /* Next in collision chain. */ | |
3056 | struct xpm_cached_color *next; | |
3057 | ||
3058 | /* Color definition (RGB and pixel color). */ | |
3059 | XColor color; | |
3060 | ||
3061 | /* Color name. */ | |
3062 | char name[1]; | |
3063 | }; | |
3064 | ||
3065 | /* The hash table used for the color cache, and its bucket vector | |
3066 | size. */ | |
3067 | ||
3068 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
cd44d2eb | 3069 | static struct xpm_cached_color **xpm_color_cache; |
4ef0d4d0 KS |
3070 | |
3071 | /* Initialize the color cache. */ | |
3072 | ||
3073 | static void | |
d3da34e0 | 3074 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3075 | { |
3076 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3077 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3078 | memset (xpm_color_cache, 0, nbytes); | |
3079 | init_color_table (); | |
3080 | ||
3081 | if (attrs->valuemask & XpmColorSymbols) | |
3082 | { | |
3083 | int i; | |
3084 | XColor color; | |
3085 | ||
3086 | for (i = 0; i < attrs->numsymbols; ++i) | |
3087 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3088 | attrs->colorsymbols[i].value, &color)) | |
3089 | { | |
3090 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3091 | color.blue); | |
3092 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3093 | } | |
3094 | } | |
3095 | } | |
3096 | ||
3097 | /* Free the color cache. */ | |
3098 | ||
3099 | static void | |
d3da34e0 | 3100 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3101 | { |
3102 | struct xpm_cached_color *p, *next; | |
3103 | int i; | |
3104 | ||
3105 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3106 | for (p = xpm_color_cache[i]; p; p = next) | |
3107 | { | |
3108 | next = p->next; | |
3109 | xfree (p); | |
3110 | } | |
3111 | ||
3112 | xfree (xpm_color_cache); | |
3113 | xpm_color_cache = NULL; | |
3114 | free_color_table (); | |
3115 | } | |
3116 | ||
3117 | /* Return the bucket index for color named COLOR_NAME in the color | |
3118 | cache. */ | |
3119 | ||
3120 | static int | |
d3da34e0 | 3121 | xpm_color_bucket (char *color_name) |
4ef0d4d0 KS |
3122 | { |
3123 | unsigned h = 0; | |
3124 | char *s; | |
3125 | ||
3126 | for (s = color_name; *s; ++s) | |
3127 | h = (h << 2) ^ *s; | |
3128 | return h %= XPM_COLOR_CACHE_BUCKETS; | |
3129 | } | |
3130 | ||
3131 | ||
3132 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3133 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3134 | entry added. */ | |
3135 | ||
3136 | static struct xpm_cached_color * | |
d3da34e0 | 3137 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3138 | { |
3139 | size_t nbytes; | |
3140 | struct xpm_cached_color *p; | |
3141 | ||
3142 | if (bucket < 0) | |
3143 | bucket = xpm_color_bucket (color_name); | |
3144 | ||
3145 | nbytes = sizeof *p + strlen (color_name); | |
3146 | p = (struct xpm_cached_color *) xmalloc (nbytes); | |
3147 | strcpy (p->name, color_name); | |
3148 | p->color = *color; | |
3149 | p->next = xpm_color_cache[bucket]; | |
3150 | xpm_color_cache[bucket] = p; | |
3151 | return p; | |
3152 | } | |
3153 | ||
3154 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3155 | return the cached definition in *COLOR. Otherwise, make a new | |
3156 | entry in the cache and allocate the color. Value is zero if color | |
3157 | allocation failed. */ | |
3158 | ||
3159 | static int | |
d3da34e0 | 3160 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3161 | { |
3162 | struct xpm_cached_color *p; | |
3163 | int h = xpm_color_bucket (color_name); | |
3164 | ||
3165 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3166 | if (strcmp (p->name, color_name) == 0) | |
3167 | break; | |
3168 | ||
3169 | if (p != NULL) | |
3170 | *color = p->color; | |
3171 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3172 | color_name, color)) | |
3173 | { | |
3174 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3175 | color->blue); | |
3176 | p = xpm_cache_color (f, color_name, color, h); | |
3177 | } | |
3178 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3179 | with transparency, and it's useful. */ | |
3180 | else if (strcmp ("opaque", color_name) == 0) | |
3181 | { | |
72af86bd | 3182 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3183 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3184 | p = xpm_cache_color (f, color_name, color, h); | |
3185 | } | |
3186 | ||
3187 | return p != NULL; | |
3188 | } | |
3189 | ||
3190 | ||
3191 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3192 | CLOSURE is a pointer to the frame on which we allocate the | |
3193 | color. Return in *COLOR the allocated color. Value is non-zero | |
3194 | if successful. */ | |
3195 | ||
3196 | static int | |
d3da34e0 JB |
3197 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3198 | void *closure) | |
4ef0d4d0 KS |
3199 | { |
3200 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3201 | } | |
3202 | ||
3203 | ||
3204 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3205 | is a pointer to the frame on which we allocate the color. Value is | |
3206 | non-zero if successful. */ | |
3207 | ||
3208 | static int | |
d3da34e0 | 3209 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3210 | { |
3211 | return 1; | |
3212 | } | |
3213 | ||
3214 | #endif /* ALLOC_XPM_COLORS */ | |
3215 | ||
3216 | ||
3217 | #ifdef HAVE_NTGUI | |
3218 | ||
3219 | /* XPM library details. */ | |
3220 | ||
14beddf4 CY |
3221 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3222 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3223 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3224 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3225 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3226 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3227 | |
4ef0d4d0 | 3228 | static int |
0855eb52 | 3229 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3230 | { |
3231 | HMODULE library; | |
3232 | ||
0855eb52 | 3233 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3234 | return 0; |
3235 | ||
3236 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3237 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3238 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3239 | LOAD_IMGLIB_FN (library, XImageFree); | |
3240 | return 1; | |
3241 | } | |
3242 | ||
3243 | #endif /* HAVE_NTGUI */ | |
3244 | ||
3245 | ||
3246 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3247 | for XPM images. Such a list must consist of conses whose car and | |
3248 | cdr are strings. */ | |
3249 | ||
3250 | static int | |
d3da34e0 | 3251 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3252 | { |
3253 | while (CONSP (color_symbols)) | |
3254 | { | |
3255 | Lisp_Object sym = XCAR (color_symbols); | |
3256 | if (!CONSP (sym) | |
3257 | || !STRINGP (XCAR (sym)) | |
3258 | || !STRINGP (XCDR (sym))) | |
3259 | break; | |
3260 | color_symbols = XCDR (color_symbols); | |
3261 | } | |
3262 | ||
3263 | return NILP (color_symbols); | |
3264 | } | |
3265 | ||
3266 | ||
3267 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3268 | ||
3269 | static int | |
d3da34e0 | 3270 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3271 | { |
3272 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3273 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3274 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3275 | /* Either `:file' or `:data' must be present. */ | |
3276 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3277 | /* Either no `:color-symbols' or it's a list of conses | |
3278 | whose car and cdr are strings. */ | |
3279 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3280 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3281 | } | |
3282 | ||
9e2a2647 | 3283 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3284 | |
cd44d2eb | 3285 | #if defined HAVE_XPM && defined HAVE_X_WINDOWS && !defined USE_GTK |
786a43d6 | 3286 | int |
ef1b0ba7 | 3287 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3288 | { |
3289 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
3290 | int id, rc; | |
3291 | XpmAttributes attrs; | |
3292 | Pixmap bitmap, mask; | |
3293 | ||
72af86bd | 3294 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3295 | |
54188d8f CY |
3296 | attrs.visual = FRAME_X_VISUAL (f); |
3297 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3298 | attrs.valuemask |= XpmVisual; | |
3299 | attrs.valuemask |= XpmColormap; | |
3300 | ||
786a43d6 | 3301 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3302 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3303 | if (rc != XpmSuccess) |
fe45ad15 CY |
3304 | { |
3305 | XpmFreeAttributes (&attrs); | |
3306 | return -1; | |
3307 | } | |
786a43d6 CY |
3308 | |
3309 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3310 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3311 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3312 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3313 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3314 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3315 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3316 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3317 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3318 | ||
3319 | XpmFreeAttributes (&attrs); | |
3320 | return id; | |
3321 | } | |
0d876a14 | 3322 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3323 | |
4ef0d4d0 KS |
3324 | /* Load image IMG which will be displayed on frame F. Value is |
3325 | non-zero if successful. */ | |
3326 | ||
ea1aaa6f ST |
3327 | #ifdef HAVE_XPM |
3328 | ||
4ef0d4d0 | 3329 | static int |
d3da34e0 | 3330 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3331 | { |
3332 | int rc; | |
3333 | XpmAttributes attrs; | |
3334 | Lisp_Object specified_file, color_symbols; | |
3335 | #ifdef HAVE_NTGUI | |
3336 | HDC hdc; | |
3337 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3338 | #endif /* HAVE_NTGUI */ | |
3339 | ||
3340 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3341 | close colors. Return colors allocated. */ | |
72af86bd | 3342 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3343 | |
3344 | #ifndef HAVE_NTGUI | |
3345 | attrs.visual = FRAME_X_VISUAL (f); | |
3346 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3347 | attrs.valuemask |= XpmVisual; | |
3348 | attrs.valuemask |= XpmColormap; | |
3349 | #endif /* HAVE_NTGUI */ | |
3350 | ||
3351 | #ifdef ALLOC_XPM_COLORS | |
3352 | /* Allocate colors with our own functions which handle | |
3353 | failing color allocation more gracefully. */ | |
3354 | attrs.color_closure = f; | |
3355 | attrs.alloc_color = xpm_alloc_color; | |
3356 | attrs.free_colors = xpm_free_colors; | |
3357 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3358 | #else /* not ALLOC_XPM_COLORS */ | |
3359 | /* Let the XPM lib allocate colors. */ | |
3360 | attrs.valuemask |= XpmReturnAllocPixels; | |
3361 | #ifdef XpmAllocCloseColors | |
3362 | attrs.alloc_close_colors = 1; | |
3363 | attrs.valuemask |= XpmAllocCloseColors; | |
3364 | #else /* not XpmAllocCloseColors */ | |
3365 | attrs.closeness = 600; | |
3366 | attrs.valuemask |= XpmCloseness; | |
3367 | #endif /* not XpmAllocCloseColors */ | |
3368 | #endif /* ALLOC_XPM_COLORS */ | |
3369 | ||
3370 | /* If image specification contains symbolic color definitions, add | |
3371 | these to `attrs'. */ | |
3372 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3373 | if (CONSP (color_symbols)) | |
3374 | { | |
3375 | Lisp_Object tail; | |
3376 | XpmColorSymbol *xpm_syms; | |
3377 | int i, size; | |
3378 | ||
3379 | attrs.valuemask |= XpmColorSymbols; | |
3380 | ||
3381 | /* Count number of symbols. */ | |
3382 | attrs.numsymbols = 0; | |
3383 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3384 | ++attrs.numsymbols; | |
3385 | ||
3386 | /* Allocate an XpmColorSymbol array. */ | |
3387 | size = attrs.numsymbols * sizeof *xpm_syms; | |
3388 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
72af86bd | 3389 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3390 | attrs.colorsymbols = xpm_syms; |
3391 | ||
3392 | /* Fill the color symbol array. */ | |
3393 | for (tail = color_symbols, i = 0; | |
3394 | CONSP (tail); | |
3395 | ++i, tail = XCDR (tail)) | |
3396 | { | |
7574650a AS |
3397 | Lisp_Object name; |
3398 | Lisp_Object color; | |
e22cffbc | 3399 | char *empty_string = (char *) ""; |
7574650a AS |
3400 | |
3401 | if (!CONSP (XCAR (tail))) | |
3402 | { | |
e22cffbc PE |
3403 | xpm_syms[i].name = empty_string; |
3404 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3405 | continue; |
3406 | } | |
3407 | name = XCAR (XCAR (tail)); | |
3408 | color = XCDR (XCAR (tail)); | |
3409 | if (STRINGP (name)) | |
3410 | { | |
3411 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
42a5b22f | 3412 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3413 | } |
3414 | else | |
e22cffbc | 3415 | xpm_syms[i].name = empty_string; |
7574650a AS |
3416 | if (STRINGP (color)) |
3417 | { | |
3418 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
42a5b22f | 3419 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3420 | } |
3421 | else | |
e22cffbc | 3422 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3423 | } |
3424 | } | |
3425 | ||
3426 | /* Create a pixmap for the image, either from a file, or from a | |
3427 | string buffer containing data in the same format as an XPM file. */ | |
3428 | #ifdef ALLOC_XPM_COLORS | |
3429 | xpm_init_color_cache (f, &attrs); | |
3430 | #endif | |
3431 | ||
3432 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3433 | ||
3434 | #ifdef HAVE_NTGUI | |
3435 | { | |
3436 | HDC frame_dc = get_frame_dc (f); | |
3437 | hdc = CreateCompatibleDC (frame_dc); | |
3438 | release_frame_dc (f, frame_dc); | |
3439 | } | |
3440 | #endif /* HAVE_NTGUI */ | |
3441 | ||
3442 | if (STRINGP (specified_file)) | |
3443 | { | |
3444 | Lisp_Object file = x_find_image_file (specified_file); | |
3445 | if (!STRINGP (file)) | |
3446 | { | |
3447 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3448 | #ifdef ALLOC_XPM_COLORS |
3449 | xpm_free_color_cache (); | |
3450 | #endif | |
4ef0d4d0 KS |
3451 | return 0; |
3452 | } | |
3453 | ||
3454 | #ifdef HAVE_NTGUI | |
3455 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3456 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3457 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3458 | &xpm_image, &xpm_mask, | |
3459 | &attrs); | |
3460 | #else | |
3461 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3462 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3463 | &attrs); |
3464 | #endif /* HAVE_NTGUI */ | |
3465 | } | |
3466 | else | |
3467 | { | |
3468 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3469 | if (!STRINGP (buffer)) |
3470 | { | |
3471 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3472 | #ifdef ALLOC_XPM_COLORS | |
3473 | xpm_free_color_cache (); | |
3474 | #endif | |
3475 | return 0; | |
3476 | } | |
4ef0d4d0 KS |
3477 | #ifdef HAVE_NTGUI |
3478 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3479 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3480 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3481 | &xpm_image, &xpm_mask, | |
3482 | &attrs); | |
3483 | #else | |
3484 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3485 | SSDATA (buffer), |
4ef0d4d0 KS |
3486 | &img->pixmap, &img->mask, |
3487 | &attrs); | |
3488 | #endif /* HAVE_NTGUI */ | |
3489 | } | |
3490 | ||
3491 | if (rc == XpmSuccess) | |
3492 | { | |
3493 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3494 | img->colors = colors_in_color_table (&img->ncolors); | |
3495 | #else /* not ALLOC_XPM_COLORS */ | |
3496 | int i; | |
3497 | ||
3498 | #ifdef HAVE_NTGUI | |
3499 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3500 | plus some duplicate attributes. */ | |
3501 | if (xpm_image && xpm_image->bitmap) | |
3502 | { | |
3503 | img->pixmap = xpm_image->bitmap; | |
3504 | /* XImageFree in libXpm frees XImage struct without destroying | |
3505 | the bitmap, which is what we want. */ | |
3506 | fn_XImageFree (xpm_image); | |
3507 | } | |
3508 | if (xpm_mask && xpm_mask->bitmap) | |
3509 | { | |
3510 | /* The mask appears to be inverted compared with what we expect. | |
3511 | TODO: invert our expectations. See other places where we | |
3512 | have to invert bits because our idea of masks is backwards. */ | |
3513 | HGDIOBJ old_obj; | |
3514 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3515 | ||
3516 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3517 | SelectObject (hdc, old_obj); | |
3518 | ||
3519 | img->mask = xpm_mask->bitmap; | |
3520 | fn_XImageFree (xpm_mask); | |
3521 | DeleteDC (hdc); | |
3522 | } | |
3523 | ||
3524 | DeleteDC (hdc); | |
3525 | #endif /* HAVE_NTGUI */ | |
3526 | ||
3527 | /* Remember allocated colors. */ | |
3528 | img->ncolors = attrs.nalloc_pixels; | |
3529 | img->colors = (unsigned long *) xmalloc (img->ncolors | |
3530 | * sizeof *img->colors); | |
3531 | for (i = 0; i < attrs.nalloc_pixels; ++i) | |
3532 | { | |
3533 | img->colors[i] = attrs.alloc_pixels[i]; | |
3534 | #ifdef DEBUG_X_COLORS | |
3535 | register_color (img->colors[i]); | |
3536 | #endif | |
3537 | } | |
3538 | #endif /* not ALLOC_XPM_COLORS */ | |
3539 | ||
3540 | img->width = attrs.width; | |
3541 | img->height = attrs.height; | |
3542 | xassert (img->width > 0 && img->height > 0); | |
3543 | ||
3544 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3545 | #ifdef HAVE_NTGUI | |
3546 | fn_XpmFreeAttributes (&attrs); | |
3547 | #else | |
3548 | XpmFreeAttributes (&attrs); | |
3549 | #endif /* HAVE_NTGUI */ | |
3550 | } | |
3551 | else | |
3552 | { | |
3553 | #ifdef HAVE_NTGUI | |
3554 | DeleteDC (hdc); | |
3555 | #endif /* HAVE_NTGUI */ | |
3556 | ||
3557 | switch (rc) | |
3558 | { | |
3559 | case XpmOpenFailed: | |
3560 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3561 | break; | |
3562 | ||
3563 | case XpmFileInvalid: | |
3564 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3565 | break; | |
3566 | ||
3567 | case XpmNoMemory: | |
3568 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3569 | break; | |
3570 | ||
3571 | case XpmColorFailed: | |
3572 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3573 | break; | |
3574 | ||
3575 | default: | |
3576 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3577 | break; | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | #ifdef ALLOC_XPM_COLORS | |
3582 | xpm_free_color_cache (); | |
3583 | #endif | |
3584 | return rc == XpmSuccess; | |
3585 | } | |
3586 | ||
3587 | #endif /* HAVE_XPM */ | |
3588 | ||
9e2a2647 | 3589 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3590 | |
9e2a2647 | 3591 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3592 | Only XPM version 3 (without any extensions) is supported. */ |
3593 | ||
f57e2426 J |
3594 | static int xpm_scan (const unsigned char **, const unsigned char *, |
3595 | const unsigned char **, int *); | |
ea1aaa6f | 3596 | static Lisp_Object xpm_make_color_table_v |
f57e2426 J |
3597 | (void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
3598 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int)); | |
3599 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, | |
3600 | int, Lisp_Object); | |
3601 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3602 | const unsigned char *, int); | |
ea1aaa6f | 3603 | static Lisp_Object xpm_make_color_table_h |
f57e2426 J |
3604 | (void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
3605 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int)); | |
3606 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, | |
3607 | int, Lisp_Object); | |
3608 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3609 | const unsigned char *, int); | |
3610 | static int xpm_str_to_color_key (const char *); | |
3611 | static int xpm_load_image (struct frame *, struct image *, | |
3612 | const unsigned char *, const unsigned char *); | |
ea1aaa6f ST |
3613 | |
3614 | /* Tokens returned from xpm_scan. */ | |
3615 | ||
3616 | enum xpm_token | |
3617 | { | |
3618 | XPM_TK_IDENT = 256, | |
3619 | XPM_TK_STRING, | |
3620 | XPM_TK_EOF | |
3621 | }; | |
3622 | ||
3623 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3624 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3625 | the end (exclusive) addresses of the data, respectively. Advance | |
3626 | *S while scanning. If token is either XPM_TK_IDENT or | |
3627 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3628 | length of the corresponding token, respectively. */ | |
3629 | ||
3630 | static int | |
3d608a86 J |
3631 | xpm_scan (const unsigned char **s, |
3632 | const unsigned char *end, | |
3633 | const unsigned char **beg, | |
3634 | int *len) | |
ea1aaa6f ST |
3635 | { |
3636 | int c; | |
3637 | ||
3638 | while (*s < end) | |
3639 | { | |
3640 | /* Skip white-space. */ | |
3641 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 3642 | ; |
ea1aaa6f ST |
3643 | |
3644 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3645 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 3646 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3647 | { |
3648 | *beg = *s - 1; | |
2ff0845e YM |
3649 | while (*s < end |
3650 | && (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
9ecf6403 YM |
3651 | ++*s; |
3652 | *len = *s - *beg; | |
3653 | return XPM_TK_IDENT; | |
3654 | } | |
ea1aaa6f | 3655 | else if (c == '"') |
9ecf6403 YM |
3656 | { |
3657 | *beg = *s; | |
3658 | while (*s < end && **s != '"') | |
3659 | ++*s; | |
3660 | *len = *s - *beg; | |
3661 | if (*s < end) | |
3662 | ++*s; | |
3663 | return XPM_TK_STRING; | |
3664 | } | |
ea1aaa6f | 3665 | else if (c == '/') |
9ecf6403 YM |
3666 | { |
3667 | if (*s < end && **s == '*') | |
3668 | { | |
3669 | /* C-style comment. */ | |
3670 | ++*s; | |
3671 | do | |
3672 | { | |
3673 | while (*s < end && *(*s)++ != '*') | |
3674 | ; | |
3675 | } | |
3676 | while (*s < end && **s != '/'); | |
3677 | if (*s < end) | |
3678 | ++*s; | |
3679 | } | |
3680 | else | |
3681 | return c; | |
3682 | } | |
ea1aaa6f | 3683 | else |
9ecf6403 | 3684 | return c; |
ea1aaa6f ST |
3685 | } |
3686 | ||
3687 | return XPM_TK_EOF; | |
3688 | } | |
3689 | ||
bbe6f2aa | 3690 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3691 | specifying the color of each pixel in XPM data. A value is either |
3692 | an integer that specifies a pixel color, Qt that specifies | |
3693 | transparency, or Qnil for the unspecified color. If the length of | |
3694 | the key string is one, a vector is used as a table. Otherwise, a | |
3695 | hash table is used. */ | |
3696 | ||
3697 | static Lisp_Object | |
3d608a86 J |
3698 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3699 | const unsigned char *, | |
3700 | int, | |
3701 | Lisp_Object), | |
3702 | Lisp_Object (**get_func) (Lisp_Object, | |
3703 | const unsigned char *, | |
3704 | int)) | |
ea1aaa6f ST |
3705 | { |
3706 | *put_func = xpm_put_color_table_v; | |
3707 | *get_func = xpm_get_color_table_v; | |
3708 | return Fmake_vector (make_number (256), Qnil); | |
3709 | } | |
3710 | ||
3711 | static void | |
3d608a86 J |
3712 | xpm_put_color_table_v (Lisp_Object color_table, |
3713 | const unsigned char *chars_start, | |
3714 | int chars_len, | |
3715 | Lisp_Object color) | |
ea1aaa6f ST |
3716 | { |
3717 | XVECTOR (color_table)->contents[*chars_start] = color; | |
3718 | } | |
3719 | ||
3720 | static Lisp_Object | |
3d608a86 J |
3721 | xpm_get_color_table_v (Lisp_Object color_table, |
3722 | const unsigned char *chars_start, | |
3723 | int chars_len) | |
ea1aaa6f ST |
3724 | { |
3725 | return XVECTOR (color_table)->contents[*chars_start]; | |
3726 | } | |
3727 | ||
3728 | static Lisp_Object | |
3d608a86 J |
3729 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3730 | const unsigned char *, | |
3731 | int, | |
3732 | Lisp_Object), | |
3733 | Lisp_Object (**get_func) (Lisp_Object, | |
3734 | const unsigned char *, | |
3735 | int)) | |
ea1aaa6f ST |
3736 | { |
3737 | *put_func = xpm_put_color_table_h; | |
3738 | *get_func = xpm_get_color_table_h; | |
3739 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
3740 | make_float (DEFAULT_REHASH_SIZE), |
3741 | make_float (DEFAULT_REHASH_THRESHOLD), | |
3742 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
3743 | } |
3744 | ||
3745 | static void | |
3d608a86 J |
3746 | xpm_put_color_table_h (Lisp_Object color_table, |
3747 | const unsigned char *chars_start, | |
3748 | int chars_len, | |
3749 | Lisp_Object color) | |
ea1aaa6f ST |
3750 | { |
3751 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
0de4bb68 | 3752 | EMACS_UINT hash_code; |
ea1aaa6f ST |
3753 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); |
3754 | ||
3755 | hash_lookup (table, chars, &hash_code); | |
3756 | hash_put (table, chars, color, hash_code); | |
3757 | } | |
3758 | ||
3759 | static Lisp_Object | |
3d608a86 J |
3760 | xpm_get_color_table_h (Lisp_Object color_table, |
3761 | const unsigned char *chars_start, | |
3762 | int chars_len) | |
ea1aaa6f ST |
3763 | { |
3764 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
3765 | int i = hash_lookup (table, make_unibyte_string (chars_start, chars_len), | |
9ecf6403 | 3766 | NULL); |
ea1aaa6f ST |
3767 | |
3768 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3769 | } | |
3770 | ||
3771 | enum xpm_color_key { | |
3772 | XPM_COLOR_KEY_S, | |
3773 | XPM_COLOR_KEY_M, | |
3774 | XPM_COLOR_KEY_G4, | |
3775 | XPM_COLOR_KEY_G, | |
3776 | XPM_COLOR_KEY_C | |
3777 | }; | |
3778 | ||
46accb8f | 3779 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3780 | |
3781 | static int | |
3d608a86 | 3782 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3783 | { |
3784 | int i; | |
3785 | ||
3786 | for (i = 0; | |
3787 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3788 | i++) | |
3789 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3790 | return i; | |
3791 | return -1; | |
3792 | } | |
3793 | ||
3794 | static int | |
3d608a86 J |
3795 | xpm_load_image (struct frame *f, |
3796 | struct image *img, | |
3797 | const unsigned char *contents, | |
3798 | const unsigned char *end) | |
ea1aaa6f | 3799 | { |
46accb8f | 3800 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3801 | unsigned char buffer[BUFSIZ]; |
3802 | int width, height, x, y; | |
3803 | int num_colors, chars_per_pixel; | |
3804 | int len, LA1; | |
46accb8f YM |
3805 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3806 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
3807 | Lisp_Object frame, color_symbols, color_table; |
3808 | int best_key, have_mask = 0; | |
3809 | XImagePtr ximg = NULL, mask_img = NULL; | |
3810 | ||
3811 | #define match() \ | |
3812 | LA1 = xpm_scan (&s, end, &beg, &len) | |
3813 | ||
9ecf6403 YM |
3814 | #define expect(TOKEN) \ |
3815 | if (LA1 != (TOKEN)) \ | |
3816 | goto failure; \ | |
3817 | else \ | |
ea1aaa6f ST |
3818 | match () |
3819 | ||
9ecf6403 | 3820 | #define expect_ident(IDENT) \ |
ea1aaa6f | 3821 | if (LA1 == XPM_TK_IDENT \ |
9ecf6403 YM |
3822 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ |
3823 | match (); \ | |
3824 | else \ | |
ea1aaa6f ST |
3825 | goto failure |
3826 | ||
3827 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3828 | goto failure; | |
3829 | s += 9; | |
ed3751c8 | 3830 | match (); |
ea1aaa6f ST |
3831 | expect_ident ("static"); |
3832 | expect_ident ("char"); | |
3833 | expect ('*'); | |
3834 | expect (XPM_TK_IDENT); | |
3835 | expect ('['); | |
3836 | expect (']'); | |
3837 | expect ('='); | |
3838 | expect ('{'); | |
3839 | expect (XPM_TK_STRING); | |
3840 | if (len >= BUFSIZ) | |
3841 | goto failure; | |
3842 | memcpy (buffer, beg, len); | |
3843 | buffer[len] = '\0'; | |
3844 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3845 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3846 | || width <= 0 || height <= 0 |
3847 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3848 | goto failure; | |
de297941 YM |
3849 | |
3850 | if (!check_image_size (f, width, height)) | |
3851 | { | |
10ea2b82 | 3852 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3853 | goto failure; |
3854 | } | |
3855 | ||
ea1aaa6f ST |
3856 | expect (','); |
3857 | ||
3858 | XSETFRAME (frame, f); | |
3859 | if (!NILP (Fxw_display_color_p (frame))) | |
3860 | best_key = XPM_COLOR_KEY_C; | |
3861 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3862 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3863 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3864 | else |
3865 | best_key = XPM_COLOR_KEY_M; | |
3866 | ||
3867 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3868 | if (chars_per_pixel == 1) | |
3869 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3870 | &get_color_table); |
ea1aaa6f ST |
3871 | else |
3872 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3873 | &get_color_table); |
ea1aaa6f ST |
3874 | |
3875 | while (num_colors-- > 0) | |
3876 | { | |
25a48bd0 | 3877 | char *color, *max_color; |
ea1aaa6f ST |
3878 | int key, next_key, max_key = 0; |
3879 | Lisp_Object symbol_color = Qnil, color_val; | |
3880 | XColor cdef; | |
3881 | ||
3882 | expect (XPM_TK_STRING); | |
3883 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3884 | goto failure; |
ea1aaa6f ST |
3885 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3886 | buffer[len - chars_per_pixel] = '\0'; | |
3887 | ||
3888 | str = strtok (buffer, " \t"); | |
3889 | if (str == NULL) | |
9ecf6403 | 3890 | goto failure; |
ea1aaa6f ST |
3891 | key = xpm_str_to_color_key (str); |
3892 | if (key < 0) | |
9ecf6403 | 3893 | goto failure; |
ea1aaa6f | 3894 | do |
9ecf6403 YM |
3895 | { |
3896 | color = strtok (NULL, " \t"); | |
3897 | if (color == NULL) | |
3898 | goto failure; | |
ea1aaa6f | 3899 | |
9db94f82 | 3900 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3901 | { |
3902 | next_key = xpm_str_to_color_key (str); | |
3903 | if (next_key >= 0) | |
3904 | break; | |
3905 | color[strlen (color)] = ' '; | |
3906 | } | |
ea1aaa6f | 3907 | |
9ecf6403 YM |
3908 | if (key == XPM_COLOR_KEY_S) |
3909 | { | |
3910 | if (NILP (symbol_color)) | |
3911 | symbol_color = build_string (color); | |
3912 | } | |
3913 | else if (max_key < key && key <= best_key) | |
3914 | { | |
3915 | max_key = key; | |
3916 | max_color = color; | |
3917 | } | |
3918 | key = next_key; | |
3919 | } | |
ea1aaa6f ST |
3920 | while (str); |
3921 | ||
3922 | color_val = Qnil; | |
3923 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3924 | { |
3925 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3926 | ||
3927 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3928 | { |
25a48bd0 | 3929 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 YM |
3930 | color_val = Qt; |
3931 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
3932 | &cdef, 0)) | |
3933 | color_val = make_number (cdef.pixel); | |
3934 | } | |
9ecf6403 | 3935 | } |
ea1aaa6f | 3936 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3937 | { |
05131107 | 3938 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3939 | color_val = Qt; |
3940 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3941 | color_val = make_number (cdef.pixel); | |
3942 | } | |
ea1aaa6f | 3943 | if (!NILP (color_val)) |
9ecf6403 | 3944 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3945 | |
3946 | expect (','); | |
3947 | } | |
3948 | ||
3949 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
9ecf6403 | 3950 | &ximg, &img->pixmap) |
edfda783 | 3951 | #ifndef HAVE_NS |
ea1aaa6f | 3952 | || !x_create_x_image_and_pixmap (f, width, height, 1, |
edfda783 AR |
3953 | &mask_img, &img->mask) |
3954 | #endif | |
3955 | ) | |
ea1aaa6f ST |
3956 | { |
3957 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3958 | goto error; | |
3959 | } | |
3960 | ||
3961 | for (y = 0; y < height; y++) | |
3962 | { | |
3963 | expect (XPM_TK_STRING); | |
3964 | str = beg; | |
3965 | if (len < width * chars_per_pixel) | |
9ecf6403 | 3966 | goto failure; |
ea1aaa6f | 3967 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
3968 | { |
3969 | Lisp_Object color_val = | |
3970 | (*get_color_table) (color_table, str, chars_per_pixel); | |
3971 | ||
3972 | XPutPixel (ximg, x, y, | |
3973 | (INTEGERP (color_val) ? XINT (color_val) | |
3974 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 3975 | #ifndef HAVE_NS |
9ecf6403 YM |
3976 | XPutPixel (mask_img, x, y, |
3977 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
3978 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 3979 | #else |
ed3751c8 JB |
3980 | if (EQ (color_val, Qt)) |
3981 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 3982 | #endif |
9ecf6403 | 3983 | } |
ea1aaa6f | 3984 | if (y + 1 < height) |
9ecf6403 | 3985 | expect (','); |
ea1aaa6f ST |
3986 | } |
3987 | ||
3988 | img->width = width; | |
3989 | img->height = height; | |
3990 | ||
0b8ac842 YM |
3991 | /* Maybe fill in the background field while we have ximg handy. */ |
3992 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
3993 | IMAGE_BACKGROUND (img, f, ximg); | |
3994 | ||
ea1aaa6f ST |
3995 | x_put_x_image (f, ximg, img->pixmap, width, height); |
3996 | x_destroy_x_image (ximg); | |
edfda783 | 3997 | #ifndef HAVE_NS |
ea1aaa6f ST |
3998 | if (have_mask) |
3999 | { | |
9ecf6403 YM |
4000 | /* Fill in the background_transparent field while we have the |
4001 | mask handy. */ | |
4002 | image_background_transparent (img, f, mask_img); | |
4003 | ||
ea1aaa6f ST |
4004 | x_put_x_image (f, mask_img, img->mask, width, height); |
4005 | x_destroy_x_image (mask_img); | |
4006 | } | |
4007 | else | |
4008 | { | |
4009 | x_destroy_x_image (mask_img); | |
4010 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4011 | img->mask = NO_PIXMAP; | |
4012 | } | |
edfda783 | 4013 | #endif |
ea1aaa6f ST |
4014 | return 1; |
4015 | ||
4016 | failure: | |
4017 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4018 | error: | |
4019 | x_destroy_x_image (ximg); | |
4020 | x_destroy_x_image (mask_img); | |
4021 | x_clear_image (f, img); | |
4022 | return 0; | |
4023 | ||
4024 | #undef match | |
4025 | #undef expect | |
4026 | #undef expect_ident | |
4027 | } | |
4028 | ||
4029 | static int | |
3d608a86 J |
4030 | xpm_load (struct frame *f, |
4031 | struct image *img) | |
ea1aaa6f ST |
4032 | { |
4033 | int success_p = 0; | |
4034 | Lisp_Object file_name; | |
4035 | ||
4036 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4037 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4038 | if (STRINGP (file_name)) | |
4039 | { | |
4040 | Lisp_Object file; | |
4041 | unsigned char *contents; | |
4042 | int size; | |
ea1aaa6f ST |
4043 | |
4044 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4045 | if (!STRINGP (file)) |
9ecf6403 YM |
4046 | { |
4047 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4048 | return 0; |
4049 | } | |
ea1aaa6f ST |
4050 | |
4051 | contents = slurp_file (SDATA (file), &size); | |
4052 | if (contents == NULL) | |
9ecf6403 YM |
4053 | { |
4054 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4055 | return 0; |
4056 | } | |
ea1aaa6f ST |
4057 | |
4058 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4059 | xfree (contents); | |
ea1aaa6f ST |
4060 | } |
4061 | else | |
4062 | { | |
4063 | Lisp_Object data; | |
4064 | ||
4065 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4066 | if (!STRINGP (data)) |
4067 | { | |
4068 | image_error ("Invalid image data `%s'", data, Qnil); | |
4069 | return 0; | |
4070 | } | |
ea1aaa6f | 4071 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4072 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4073 | } |
4074 | ||
4075 | return success_p; | |
4076 | } | |
4077 | ||
9e2a2647 | 4078 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4079 | |
ea1aaa6f | 4080 | |
4ef0d4d0 KS |
4081 | \f |
4082 | /*********************************************************************** | |
4083 | Color table | |
4084 | ***********************************************************************/ | |
4085 | ||
4086 | #ifdef COLOR_TABLE_SUPPORT | |
4087 | ||
4088 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4089 | ||
4090 | struct ct_color | |
4091 | { | |
4092 | int r, g, b; | |
4093 | unsigned long pixel; | |
4094 | ||
4095 | /* Next in color table collision list. */ | |
4096 | struct ct_color *next; | |
4097 | }; | |
4098 | ||
4099 | /* The bucket vector size to use. Must be prime. */ | |
4100 | ||
4101 | #define CT_SIZE 101 | |
4102 | ||
4103 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4104 | ||
4105 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4106 | ||
4107 | /* The color hash table. */ | |
4108 | ||
cd44d2eb | 4109 | static struct ct_color **ct_table; |
4ef0d4d0 KS |
4110 | |
4111 | /* Number of entries in the color table. */ | |
4112 | ||
cd44d2eb | 4113 | static int ct_colors_allocated; |
4ef0d4d0 KS |
4114 | |
4115 | /* Initialize the color table. */ | |
4116 | ||
4117 | static void | |
d3da34e0 | 4118 | init_color_table (void) |
4ef0d4d0 KS |
4119 | { |
4120 | int size = CT_SIZE * sizeof (*ct_table); | |
4121 | ct_table = (struct ct_color **) xmalloc (size); | |
72af86bd | 4122 | memset (ct_table, 0, size); |
4ef0d4d0 KS |
4123 | ct_colors_allocated = 0; |
4124 | } | |
4125 | ||
4126 | ||
4127 | /* Free memory associated with the color table. */ | |
4128 | ||
4129 | static void | |
d3da34e0 | 4130 | free_color_table (void) |
4ef0d4d0 KS |
4131 | { |
4132 | int i; | |
4133 | struct ct_color *p, *next; | |
4134 | ||
4135 | for (i = 0; i < CT_SIZE; ++i) | |
4136 | for (p = ct_table[i]; p; p = next) | |
4137 | { | |
4138 | next = p->next; | |
4139 | xfree (p); | |
4140 | } | |
4141 | ||
4142 | xfree (ct_table); | |
4143 | ct_table = NULL; | |
4144 | } | |
4145 | ||
4146 | ||
4147 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4148 | entry for that color already is in the color table, return the | |
4149 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4150 | G, B, and make an entry in the color table. */ | |
4151 | ||
4152 | static unsigned long | |
d3da34e0 | 4153 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4154 | { |
4155 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4156 | int i = hash % CT_SIZE; | |
4157 | struct ct_color *p; | |
4158 | Display_Info *dpyinfo; | |
4159 | ||
4160 | /* Handle TrueColor visuals specially, which improves performance by | |
4161 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4162 | a nop, and pixel colors specify RGB values directly. See also | |
4163 | the Xlib spec, chapter 3.1. */ | |
4164 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4165 | if (dpyinfo->red_bits > 0) | |
4166 | { | |
4167 | unsigned long pr, pg, pb; | |
4168 | ||
4169 | /* Apply gamma-correction like normal color allocation does. */ | |
4170 | if (f->gamma) | |
4171 | { | |
4172 | XColor color; | |
4173 | color.red = r, color.green = g, color.blue = b; | |
4174 | gamma_correct (f, &color); | |
4175 | r = color.red, g = color.green, b = color.blue; | |
4176 | } | |
4177 | ||
4178 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4179 | them to the right position in the pixel color. Note that the | |
4180 | original RGB values are 16-bit values, as usual in X. */ | |
4181 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4182 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4183 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4184 | ||
4185 | /* Assemble the pixel color. */ | |
4186 | return pr | pg | pb; | |
4187 | } | |
1f026899 | 4188 | |
4ef0d4d0 KS |
4189 | for (p = ct_table[i]; p; p = p->next) |
4190 | if (p->r == r && p->g == g && p->b == b) | |
4191 | break; | |
4192 | ||
4193 | if (p == NULL) | |
4194 | { | |
4195 | ||
4196 | #ifdef HAVE_X_WINDOWS | |
4197 | XColor color; | |
4198 | Colormap cmap; | |
4199 | int rc; | |
4200 | ||
4201 | color.red = r; | |
4202 | color.green = g; | |
4203 | color.blue = b; | |
4204 | ||
4205 | cmap = FRAME_X_COLORMAP (f); | |
4206 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4207 | if (rc) | |
4208 | { | |
4209 | ++ct_colors_allocated; | |
4210 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4211 | p->r = r; | |
4212 | p->g = g; | |
4213 | p->b = b; | |
4214 | p->pixel = color.pixel; | |
4215 | p->next = ct_table[i]; | |
4216 | ct_table[i] = p; | |
4217 | } | |
4218 | else | |
4219 | return FRAME_FOREGROUND_PIXEL (f); | |
4220 | ||
4221 | #else | |
4222 | COLORREF color; | |
4223 | #ifdef HAVE_NTGUI | |
4224 | color = PALETTERGB (r, g, b); | |
4225 | #else | |
4226 | color = RGB_TO_ULONG (r, g, b); | |
4227 | #endif /* HAVE_NTGUI */ | |
4228 | ++ct_colors_allocated; | |
4229 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4230 | p->r = r; | |
4231 | p->g = g; | |
4232 | p->b = b; | |
4233 | p->pixel = color; | |
4234 | p->next = ct_table[i]; | |
4235 | ct_table[i] = p; | |
4236 | #endif /* HAVE_X_WINDOWS */ | |
4237 | ||
4238 | } | |
4239 | ||
4240 | return p->pixel; | |
4241 | } | |
4242 | ||
4243 | ||
4244 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4245 | table. If not already present, allocate it. Value is PIXEL. */ | |
4246 | ||
4247 | static unsigned long | |
d3da34e0 | 4248 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4249 | { |
4250 | int i = pixel % CT_SIZE; | |
4251 | struct ct_color *p; | |
4252 | ||
4253 | for (p = ct_table[i]; p; p = p->next) | |
4254 | if (p->pixel == pixel) | |
4255 | break; | |
4256 | ||
4257 | if (p == NULL) | |
4258 | { | |
4259 | XColor color; | |
4260 | Colormap cmap; | |
4261 | int rc; | |
4262 | ||
4263 | #ifdef HAVE_X_WINDOWS | |
4264 | cmap = FRAME_X_COLORMAP (f); | |
4265 | color.pixel = pixel; | |
4266 | x_query_color (f, &color); | |
4267 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4268 | #else | |
4269 | BLOCK_INPUT; | |
4270 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4271 | color.pixel = pixel; | |
4272 | XQueryColor (NULL, cmap, &color); | |
4273 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4274 | UNBLOCK_INPUT; | |
4275 | #endif /* HAVE_X_WINDOWS */ | |
4276 | ||
4277 | if (rc) | |
4278 | { | |
4279 | ++ct_colors_allocated; | |
4280 | ||
4281 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4282 | p->r = color.red; | |
4283 | p->g = color.green; | |
4284 | p->b = color.blue; | |
4285 | p->pixel = pixel; | |
4286 | p->next = ct_table[i]; | |
4287 | ct_table[i] = p; | |
4288 | } | |
4289 | else | |
4290 | return FRAME_FOREGROUND_PIXEL (f); | |
4291 | } | |
4292 | return p->pixel; | |
4293 | } | |
4294 | ||
4295 | ||
4296 | /* Value is a vector of all pixel colors contained in the color table, | |
4297 | allocated via xmalloc. Set *N to the number of colors. */ | |
4298 | ||
4299 | static unsigned long * | |
d3da34e0 | 4300 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4301 | { |
4302 | int i, j; | |
4303 | struct ct_color *p; | |
4304 | unsigned long *colors; | |
4305 | ||
4306 | if (ct_colors_allocated == 0) | |
4307 | { | |
4308 | *n = 0; | |
4309 | colors = NULL; | |
4310 | } | |
4311 | else | |
4312 | { | |
4313 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4314 | * sizeof *colors); | |
4315 | *n = ct_colors_allocated; | |
4316 | ||
4317 | for (i = j = 0; i < CT_SIZE; ++i) | |
4318 | for (p = ct_table[i]; p; p = p->next) | |
4319 | colors[j++] = p->pixel; | |
4320 | } | |
4321 | ||
4322 | return colors; | |
4323 | } | |
4324 | ||
4325 | #else /* COLOR_TABLE_SUPPORT */ | |
4326 | ||
4327 | static unsigned long | |
7c3320d8 | 4328 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4329 | { |
4330 | unsigned long pixel; | |
4331 | ||
4ef0d4d0 KS |
4332 | #ifdef HAVE_NTGUI |
4333 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4334 | #endif /* HAVE_NTGUI */ | |
4335 | ||
edfda783 AR |
4336 | #ifdef HAVE_NS |
4337 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4338 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4339 | return pixel; |
4340 | } | |
4341 | ||
4342 | static void | |
7c3320d8 | 4343 | init_color_table (void) |
4ef0d4d0 KS |
4344 | { |
4345 | } | |
4346 | #endif /* COLOR_TABLE_SUPPORT */ | |
4347 | ||
4348 | \f | |
4349 | /*********************************************************************** | |
4350 | Algorithms | |
4351 | ***********************************************************************/ | |
4352 | ||
f57e2426 J |
4353 | static XColor *x_to_xcolors (struct frame *, struct image *, int); |
4354 | static void x_from_xcolors (struct frame *, struct image *, XColor *); | |
4355 | static void x_detect_edges (struct frame *, struct image *, int[9], int); | |
4ef0d4d0 KS |
4356 | |
4357 | #ifdef HAVE_NTGUI | |
4358 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4359 | #endif /* HAVE_NTGUI */ | |
4360 | ||
4ef0d4d0 KS |
4361 | /* Edge detection matrices for different edge-detection |
4362 | strategies. */ | |
4363 | ||
4364 | static int emboss_matrix[9] = { | |
4365 | /* x - 1 x x + 1 */ | |
4366 | 2, -1, 0, /* y - 1 */ | |
4367 | -1, 0, 1, /* y */ | |
4368 | 0, 1, -2 /* y + 1 */ | |
4369 | }; | |
4370 | ||
4371 | static int laplace_matrix[9] = { | |
4372 | /* x - 1 x x + 1 */ | |
4373 | 1, 0, 0, /* y - 1 */ | |
4374 | 0, 0, 0, /* y */ | |
4375 | 0, 0, -1 /* y + 1 */ | |
4376 | }; | |
4377 | ||
4378 | /* Value is the intensity of the color whose red/green/blue values | |
4379 | are R, G, and B. */ | |
4380 | ||
4381 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4382 | ||
4383 | ||
4384 | /* On frame F, return an array of XColor structures describing image | |
4385 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4386 | non-zero means also fill the red/green/blue members of the XColor | |
4387 | structures. Value is a pointer to the array of XColors structures, | |
4388 | allocated with xmalloc; it must be freed by the caller. */ | |
4389 | ||
4390 | static XColor * | |
d3da34e0 | 4391 | x_to_xcolors (struct frame *f, struct image *img, int rgb_p) |
4ef0d4d0 KS |
4392 | { |
4393 | int x, y; | |
4394 | XColor *colors, *p; | |
4395 | XImagePtr_or_DC ximg; | |
4396 | #ifdef HAVE_NTGUI | |
4397 | HDC hdc; | |
4398 | HGDIOBJ prev; | |
4399 | #endif /* HAVE_NTGUI */ | |
4400 | ||
4401 | colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors); | |
4402 | ||
4403 | #ifndef HAVE_NTGUI | |
4404 | /* Get the X image IMG->pixmap. */ | |
4405 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4406 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4407 | #else | |
4408 | /* Load the image into a memory device context. */ | |
4409 | hdc = get_frame_dc (f); | |
4410 | ximg = CreateCompatibleDC (hdc); | |
4411 | release_frame_dc (f, hdc); | |
4412 | prev = SelectObject (ximg, img->pixmap); | |
4413 | #endif /* HAVE_NTGUI */ | |
4414 | ||
4415 | /* Fill the `pixel' members of the XColor array. I wished there | |
4416 | were an easy and portable way to circumvent XGetPixel. */ | |
4417 | p = colors; | |
4418 | for (y = 0; y < img->height; ++y) | |
4419 | { | |
4420 | XColor *row = p; | |
4421 | ||
8b7d0a16 | 4422 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 | 4423 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4424 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4425 | if (rgb_p) |
4426 | x_query_colors (f, row, img->width); | |
4427 | ||
4428 | #else | |
4429 | ||
4430 | for (x = 0; x < img->width; ++x, ++p) | |
4431 | { | |
4432 | /* W32_TODO: palette support needed here? */ | |
4433 | p->pixel = GET_PIXEL (ximg, x, y); | |
4434 | if (rgb_p) | |
4435 | { | |
4ef0d4d0 KS |
4436 | p->red = RED16_FROM_ULONG (p->pixel); |
4437 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4438 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4439 | } |
4440 | } | |
4441 | #endif /* HAVE_X_WINDOWS */ | |
4442 | } | |
4443 | ||
4444 | Destroy_Image (ximg, prev); | |
4445 | ||
4446 | return colors; | |
4447 | } | |
4448 | ||
4449 | #ifdef HAVE_NTGUI | |
4450 | ||
4451 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4452 | created with CreateDIBSection, with the pointer to the bit values | |
4453 | stored in ximg->data. */ | |
4454 | ||
3046a84b | 4455 | static void |
7c3320d8 | 4456 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4457 | { |
4458 | int width = ximg->info.bmiHeader.biWidth; | |
4ef0d4d0 KS |
4459 | unsigned char * pixel; |
4460 | ||
4461 | /* True color images. */ | |
4462 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4463 | { | |
4464 | int rowbytes = width * 3; | |
4465 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4466 | if (rowbytes % 4) | |
4467 | rowbytes += 4 - (rowbytes % 4); | |
4468 | ||
4469 | pixel = ximg->data + y * rowbytes + x * 3; | |
4470 | /* Windows bitmaps are in BGR order. */ | |
4471 | *pixel = GetBValue (color); | |
4472 | *(pixel + 1) = GetGValue (color); | |
4473 | *(pixel + 2) = GetRValue (color); | |
4474 | } | |
4475 | /* Monochrome images. */ | |
4476 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4477 | { | |
4478 | int rowbytes = width / 8; | |
4479 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4480 | if (rowbytes % 4) | |
4481 | rowbytes += 4 - (rowbytes % 4); | |
4482 | pixel = ximg->data + y * rowbytes + x / 8; | |
4483 | /* Filter out palette info. */ | |
4484 | if (color & 0x00ffffff) | |
4485 | *pixel = *pixel | (1 << x % 8); | |
4486 | else | |
4487 | *pixel = *pixel & ~(1 << x % 8); | |
4488 | } | |
4489 | else | |
4490 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4491 | } | |
4492 | ||
4493 | #endif /* HAVE_NTGUI */ | |
4494 | ||
4495 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4496 | RGB members are set. F is the frame on which this all happens. | |
4497 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4498 | ||
4499 | static void | |
d3da34e0 | 4500 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4501 | { |
4502 | int x, y; | |
edfda783 | 4503 | XImagePtr oimg = NULL; |
9d7112ed | 4504 | Pixmap pixmap; |
4ef0d4d0 KS |
4505 | XColor *p; |
4506 | ||
4507 | init_color_table (); | |
4508 | ||
4509 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4510 | &oimg, &pixmap); | |
4511 | p = colors; | |
4512 | for (y = 0; y < img->height; ++y) | |
4513 | for (x = 0; x < img->width; ++x, ++p) | |
4514 | { | |
4515 | unsigned long pixel; | |
4516 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4517 | XPutPixel (oimg, x, y, pixel); | |
4518 | } | |
4519 | ||
4520 | xfree (colors); | |
4521 | x_clear_image_1 (f, img, 1, 0, 1); | |
4522 | ||
4523 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4524 | x_destroy_x_image (oimg); | |
4525 | img->pixmap = pixmap; | |
4526 | #ifdef COLOR_TABLE_SUPPORT | |
4527 | img->colors = colors_in_color_table (&img->ncolors); | |
4528 | free_color_table (); | |
4529 | #endif /* COLOR_TABLE_SUPPORT */ | |
4530 | } | |
4531 | ||
4532 | ||
4533 | /* On frame F, perform edge-detection on image IMG. | |
4534 | ||
4535 | MATRIX is a nine-element array specifying the transformation | |
4536 | matrix. See emboss_matrix for an example. | |
4537 | ||
4538 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4539 | outgoing image. */ | |
4540 | ||
4541 | static void | |
d3da34e0 | 4542 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4543 | { |
4544 | XColor *colors = x_to_xcolors (f, img, 1); | |
4545 | XColor *new, *p; | |
4546 | int x, y, i, sum; | |
4547 | ||
4548 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4549 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4550 | |
4551 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4552 | ||
4553 | new = (XColor *) xmalloc (img->width * img->height * sizeof *new); | |
4554 | ||
4555 | for (y = 0; y < img->height; ++y) | |
4556 | { | |
4557 | p = COLOR (new, 0, y); | |
4558 | p->red = p->green = p->blue = 0xffff/2; | |
4559 | p = COLOR (new, img->width - 1, y); | |
4560 | p->red = p->green = p->blue = 0xffff/2; | |
4561 | } | |
4562 | ||
4563 | for (x = 1; x < img->width - 1; ++x) | |
4564 | { | |
4565 | p = COLOR (new, x, 0); | |
4566 | p->red = p->green = p->blue = 0xffff/2; | |
4567 | p = COLOR (new, x, img->height - 1); | |
4568 | p->red = p->green = p->blue = 0xffff/2; | |
4569 | } | |
4570 | ||
4571 | for (y = 1; y < img->height - 1; ++y) | |
4572 | { | |
4573 | p = COLOR (new, 1, y); | |
4574 | ||
4575 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4576 | { | |
6ae141d6 | 4577 | int r, g, b, yy, xx; |
4ef0d4d0 KS |
4578 | |
4579 | r = g = b = i = 0; | |
6ae141d6 PE |
4580 | for (yy = y - 1; yy < y + 2; ++yy) |
4581 | for (xx = x - 1; xx < x + 2; ++xx, ++i) | |
4ef0d4d0 KS |
4582 | if (matrix[i]) |
4583 | { | |
6ae141d6 | 4584 | XColor *t = COLOR (colors, xx, yy); |
4ef0d4d0 KS |
4585 | r += matrix[i] * t->red; |
4586 | g += matrix[i] * t->green; | |
4587 | b += matrix[i] * t->blue; | |
4588 | } | |
4589 | ||
4590 | r = (r / sum + color_adjust) & 0xffff; | |
4591 | g = (g / sum + color_adjust) & 0xffff; | |
4592 | b = (b / sum + color_adjust) & 0xffff; | |
4593 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4594 | } | |
4595 | } | |
4596 | ||
4597 | xfree (colors); | |
4598 | x_from_xcolors (f, img, new); | |
4599 | ||
4600 | #undef COLOR | |
4601 | } | |
4602 | ||
4603 | ||
4604 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4605 | on frame F. */ | |
4606 | ||
4607 | static void | |
d3da34e0 | 4608 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4609 | { |
4610 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4611 | } | |
4612 | ||
4613 | ||
4614 | /* Transform image IMG which is used on frame F with a Laplace | |
4615 | edge-detection algorithm. The result is an image that can be used | |
4616 | to draw disabled buttons, for example. */ | |
4617 | ||
4618 | static void | |
d3da34e0 | 4619 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4620 | { |
4621 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4622 | } | |
4623 | ||
4624 | ||
4625 | /* Perform edge-detection on image IMG on frame F, with specified | |
4626 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4627 | ||
4628 | MATRIX must be either | |
4629 | ||
4630 | - a list of at least 9 numbers in row-major form | |
4631 | - a vector of at least 9 numbers | |
4632 | ||
4633 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4634 | number. */ | |
4635 | ||
4636 | static void | |
d3da34e0 JB |
4637 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4638 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4639 | { |
4640 | int i = 0; | |
4641 | int trans[9]; | |
4642 | ||
4643 | if (CONSP (matrix)) | |
4644 | { | |
4645 | for (i = 0; | |
4646 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4647 | ++i, matrix = XCDR (matrix)) | |
4648 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4649 | } | |
4650 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4651 | { | |
4652 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4653 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4654 | } | |
4655 | ||
4656 | if (NILP (color_adjust)) | |
4657 | color_adjust = make_number (0xffff / 2); | |
4658 | ||
4659 | if (i == 9 && NUMBERP (color_adjust)) | |
77a765fd | 4660 | x_detect_edges (f, img, trans, XFLOATINT (color_adjust)); |
4ef0d4d0 KS |
4661 | } |
4662 | ||
4663 | ||
4664 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4665 | ||
4666 | static void | |
d3da34e0 | 4667 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4668 | { |
4669 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4670 | #ifdef HAVE_NTGUI | |
4671 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4672 | #else | |
4673 | int n_planes = dpyinfo->n_planes; | |
4674 | #endif /* HAVE_NTGUI */ | |
4675 | ||
4676 | if (n_planes >= 2) | |
4677 | { | |
4678 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4679 | drawing such images with a stipple can look very odd, so | |
4680 | we're using this method instead. */ | |
4681 | XColor *colors = x_to_xcolors (f, img, 1); | |
4682 | XColor *p, *end; | |
4683 | const int h = 15000; | |
4684 | const int l = 30000; | |
4685 | ||
4686 | for (p = colors, end = colors + img->width * img->height; | |
4687 | p < end; | |
4688 | ++p) | |
4689 | { | |
4690 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4691 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4692 | p->red = p->green = p->blue = i2; | |
4693 | } | |
4694 | ||
4695 | x_from_xcolors (f, img, colors); | |
4696 | } | |
4697 | ||
4698 | /* Draw a cross over the disabled image, if we must or if we | |
4699 | should. */ | |
4700 | if (n_planes < 2 || cross_disabled_images) | |
4701 | { | |
4702 | #ifndef HAVE_NTGUI | |
4703 | Display *dpy = FRAME_X_DISPLAY (f); | |
4704 | GC gc; | |
4705 | ||
5afa3a81 | 4706 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4707 | |
4ef0d4d0 | 4708 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4709 | |
ae8279db | 4710 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); |
4ef0d4d0 KS |
4711 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4712 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4713 | img->width - 1, img->height - 1); | |
4714 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4715 | img->width - 1, 0); | |
4716 | XFreeGC (dpy, gc); | |
4717 | ||
4718 | if (img->mask) | |
4719 | { | |
ae8279db | 4720 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4721 | XSetForeground (dpy, gc, MaskForeground (f)); |
4722 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4723 | img->width - 1, img->height - 1); | |
4724 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4725 | img->width - 1, 0); | |
4726 | XFreeGC (dpy, gc); | |
4727 | } | |
edfda783 | 4728 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4729 | #else |
4730 | HDC hdc, bmpdc; | |
4731 | HGDIOBJ prev; | |
4732 | ||
4733 | hdc = get_frame_dc (f); | |
4734 | bmpdc = CreateCompatibleDC (hdc); | |
4735 | release_frame_dc (f, hdc); | |
4736 | ||
4737 | prev = SelectObject (bmpdc, img->pixmap); | |
4738 | ||
4739 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4740 | MoveToEx (bmpdc, 0, 0, NULL); | |
4741 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4742 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4743 | LineTo (bmpdc, img->width - 1, 0); | |
4744 | ||
4745 | if (img->mask) | |
4746 | { | |
4747 | SelectObject (bmpdc, img->mask); | |
4748 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4749 | MoveToEx (bmpdc, 0, 0, NULL); | |
4750 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4751 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4752 | LineTo (bmpdc, img->width - 1, 0); | |
4753 | } | |
4754 | SelectObject (bmpdc, prev); | |
4755 | DeleteDC (bmpdc); | |
4756 | #endif /* HAVE_NTGUI */ | |
4757 | } | |
4758 | } | |
4759 | ||
4760 | ||
4761 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4762 | name of an image file, for error messages. HOW determines how to | |
4763 | determine the background color of IMG. If it is a list '(R G B)', | |
4764 | with R, G, and B being integers >= 0, take that as the color of the | |
4765 | background. Otherwise, determine the background color of IMG | |
4766 | heuristically. Value is non-zero if successful. */ | |
4767 | ||
4768 | static int | |
d3da34e0 | 4769 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4770 | { |
4771 | XImagePtr_or_DC ximg; | |
4772 | #ifndef HAVE_NTGUI | |
4773 | XImagePtr mask_img; | |
4774 | #else | |
4775 | HDC frame_dc; | |
4776 | HGDIOBJ prev; | |
4777 | char *mask_img; | |
4778 | int row_width; | |
4779 | #endif /* HAVE_NTGUI */ | |
4780 | int x, y, rc, use_img_background; | |
4781 | unsigned long bg = 0; | |
4782 | ||
4783 | if (img->mask) | |
4784 | { | |
4785 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4786 | img->mask = NO_PIXMAP; | |
4787 | img->background_transparent_valid = 0; | |
4788 | } | |
4789 | ||
4790 | #ifndef HAVE_NTGUI | |
edfda783 | 4791 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4792 | /* Create an image and pixmap serving as mask. */ |
4793 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4794 | &mask_img, &img->mask); | |
4795 | if (!rc) | |
4796 | return 0; | |
edfda783 | 4797 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4798 | |
4799 | /* Get the X image of IMG->pixmap. */ | |
4800 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4801 | img->width, img->height, | |
4802 | ~0, ZPixmap); | |
4803 | #else | |
4804 | /* Create the bit array serving as mask. */ | |
4805 | row_width = (img->width + 7) / 8; | |
4806 | mask_img = xmalloc (row_width * img->height); | |
72af86bd | 4807 | memset (mask_img, 0, row_width * img->height); |
4ef0d4d0 KS |
4808 | |
4809 | /* Create a memory device context for IMG->pixmap. */ | |
4810 | frame_dc = get_frame_dc (f); | |
4811 | ximg = CreateCompatibleDC (frame_dc); | |
4812 | release_frame_dc (f, frame_dc); | |
4813 | prev = SelectObject (ximg, img->pixmap); | |
4814 | #endif /* HAVE_NTGUI */ | |
4815 | ||
4816 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4817 | take that as color. Otherwise, use the image's background color. */ | |
4818 | use_img_background = 1; | |
4819 | ||
4820 | if (CONSP (how)) | |
4821 | { | |
4822 | int rgb[3], i; | |
4823 | ||
4824 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4825 | { | |
4826 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4827 | how = XCDR (how); | |
4828 | } | |
4829 | ||
4830 | if (i == 3 && NILP (how)) | |
4831 | { | |
4832 | char color_name[30]; | |
4833 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4834 | bg = ( | |
4835 | #ifdef HAVE_NTGUI | |
4836 | 0x00ffffff & /* Filter out palette info. */ | |
4837 | #endif /* HAVE_NTGUI */ | |
4838 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4839 | use_img_background = 0; | |
4840 | } | |
4841 | } | |
4842 | ||
4843 | if (use_img_background) | |
6ac3c7bb | 4844 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4845 | |
4846 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4847 | from the background color bg. */ | |
4848 | #ifndef HAVE_NTGUI | |
4849 | for (y = 0; y < img->height; ++y) | |
4850 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4851 | #ifndef HAVE_NS |
4ef0d4d0 | 4852 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4853 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4854 | #else |
4855 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4856 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4857 | #endif /* HAVE_NS */ |
4858 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4859 | /* Fill in the background_transparent field while we have the mask handy. */ |
4860 | image_background_transparent (img, f, mask_img); | |
4861 | ||
4862 | /* Put mask_img into img->mask. */ | |
4863 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4864 | x_destroy_x_image (mask_img); | |
edfda783 | 4865 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4866 | #else |
4867 | for (y = 0; y < img->height; ++y) | |
4868 | for (x = 0; x < img->width; ++x) | |
4869 | { | |
4870 | COLORREF p = GetPixel (ximg, x, y); | |
4871 | if (p != bg) | |
4872 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4873 | } | |
4874 | ||
4875 | /* Create the mask image. */ | |
4876 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4877 | mask_img); | |
4878 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4879 | SelectObject (ximg, img->mask); | |
4880 | image_background_transparent (img, f, ximg); | |
4881 | ||
4882 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4883 | xfree (mask_img); | |
4884 | #endif /* HAVE_NTGUI */ | |
4885 | ||
4886 | Destroy_Image (ximg, prev); | |
4887 | ||
4888 | return 1; | |
4889 | } | |
4890 | ||
4891 | \f | |
4892 | /*********************************************************************** | |
4893 | PBM (mono, gray, color) | |
4894 | ***********************************************************************/ | |
4895 | ||
f57e2426 J |
4896 | static int pbm_image_p (Lisp_Object object); |
4897 | static int pbm_load (struct frame *f, struct image *img); | |
4898 | static int pbm_scan_number (unsigned char **, unsigned char *); | |
4ef0d4d0 KS |
4899 | |
4900 | /* The symbol `pbm' identifying images of this type. */ | |
4901 | ||
955cbe7b | 4902 | static Lisp_Object Qpbm; |
4ef0d4d0 KS |
4903 | |
4904 | /* Indices of image specification fields in gs_format, below. */ | |
4905 | ||
4906 | enum pbm_keyword_index | |
4907 | { | |
4908 | PBM_TYPE, | |
4909 | PBM_FILE, | |
4910 | PBM_DATA, | |
4911 | PBM_ASCENT, | |
4912 | PBM_MARGIN, | |
4913 | PBM_RELIEF, | |
4914 | PBM_ALGORITHM, | |
4915 | PBM_HEURISTIC_MASK, | |
4916 | PBM_MASK, | |
4917 | PBM_FOREGROUND, | |
4918 | PBM_BACKGROUND, | |
4919 | PBM_LAST | |
4920 | }; | |
4921 | ||
4922 | /* Vector of image_keyword structures describing the format | |
4923 | of valid user-defined image specifications. */ | |
4924 | ||
91433552 | 4925 | static const struct image_keyword pbm_format[PBM_LAST] = |
4ef0d4d0 KS |
4926 | { |
4927 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4928 | {":file", IMAGE_STRING_VALUE, 0}, | |
4929 | {":data", IMAGE_STRING_VALUE, 0}, | |
4930 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
4931 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
4932 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
4933 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4934 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4935 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4936 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4937 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4938 | }; | |
4939 | ||
4940 | /* Structure describing the image type `pbm'. */ | |
4941 | ||
4942 | static struct image_type pbm_type = | |
4943 | { | |
4944 | &Qpbm, | |
4945 | pbm_image_p, | |
4946 | pbm_load, | |
4947 | x_clear_image, | |
4948 | NULL | |
4949 | }; | |
4950 | ||
4951 | ||
4952 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
4953 | ||
4954 | static int | |
d3da34e0 | 4955 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
4956 | { |
4957 | struct image_keyword fmt[PBM_LAST]; | |
4958 | ||
72af86bd | 4959 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
4960 | |
4961 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
4962 | return 0; | |
4963 | ||
4964 | /* Must specify either :data or :file. */ | |
4965 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
4966 | } | |
4967 | ||
4968 | ||
4969 | /* Scan a decimal number from *S and return it. Advance *S while | |
4970 | reading the number. END is the end of the string. Value is -1 at | |
4971 | end of input. */ | |
4972 | ||
4973 | static int | |
d3da34e0 | 4974 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
4975 | { |
4976 | int c = 0, val = -1; | |
4977 | ||
4978 | while (*s < end) | |
4979 | { | |
4980 | /* Skip white-space. */ | |
4981 | while (*s < end && (c = *(*s)++, isspace (c))) | |
4982 | ; | |
4983 | ||
4984 | if (c == '#') | |
4985 | { | |
4986 | /* Skip comment to end of line. */ | |
4987 | while (*s < end && (c = *(*s)++, c != '\n')) | |
4988 | ; | |
4989 | } | |
4990 | else if (isdigit (c)) | |
4991 | { | |
4992 | /* Read decimal number. */ | |
4993 | val = c - '0'; | |
4994 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
4995 | val = 10 * val + c - '0'; | |
4996 | break; | |
4997 | } | |
4998 | else | |
4999 | break; | |
5000 | } | |
5001 | ||
5002 | return val; | |
5003 | } | |
5004 | ||
5005 | ||
5006 | #ifdef HAVE_NTGUI | |
5007 | #if 0 /* Unused. ++kfs */ | |
5008 | ||
5009 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5010 | with xmalloc holding FILE's contents. Value is null if an error | |
5011 | occurred. *SIZE is set to the size of the file. */ | |
5012 | ||
5013 | static char * | |
5014 | pbm_read_file (file, size) | |
5015 | Lisp_Object file; | |
5016 | int *size; | |
5017 | { | |
5018 | FILE *fp = NULL; | |
5019 | char *buf = NULL; | |
5020 | struct stat st; | |
5021 | ||
5022 | if (stat (SDATA (file), &st) == 0 | |
5023 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
5024 | && (buf = (char *) xmalloc (st.st_size), | |
5025 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5026 | { | |
5027 | *size = st.st_size; | |
5028 | fclose (fp); | |
5029 | } | |
5030 | else | |
5031 | { | |
5032 | if (fp) | |
5033 | fclose (fp); | |
5034 | if (buf) | |
5035 | { | |
5036 | xfree (buf); | |
5037 | buf = NULL; | |
5038 | } | |
5039 | } | |
5040 | ||
5041 | return buf; | |
5042 | } | |
5043 | #endif | |
5044 | #endif /* HAVE_NTGUI */ | |
5045 | ||
5046 | /* Load PBM image IMG for use on frame F. */ | |
5047 | ||
5048 | static int | |
d3da34e0 | 5049 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5050 | { |
5051 | int raw_p, x, y; | |
5052 | int width, height, max_color_idx = 0; | |
5053 | XImagePtr ximg; | |
5054 | Lisp_Object file, specified_file; | |
5055 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5056 | unsigned char *contents = NULL; |
5057 | unsigned char *end, *p; | |
5058 | int size; | |
5059 | ||
5060 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5061 | |
5062 | if (STRINGP (specified_file)) | |
5063 | { | |
5064 | file = x_find_image_file (specified_file); | |
5065 | if (!STRINGP (file)) | |
5066 | { | |
5067 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5068 | return 0; |
5069 | } | |
5070 | ||
42a5b22f | 5071 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5072 | if (contents == NULL) |
5073 | { | |
5074 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5075 | return 0; |
5076 | } | |
5077 | ||
5078 | p = contents; | |
5079 | end = contents + size; | |
5080 | } | |
5081 | else | |
5082 | { | |
5083 | Lisp_Object data; | |
5084 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5085 | if (!STRINGP (data)) |
5086 | { | |
5087 | image_error ("Invalid image data `%s'", data, Qnil); | |
5088 | return 0; | |
5089 | } | |
4ef0d4d0 KS |
5090 | p = SDATA (data); |
5091 | end = p + SBYTES (data); | |
5092 | } | |
5093 | ||
5094 | /* Check magic number. */ | |
5095 | if (end - p < 2 || *p++ != 'P') | |
5096 | { | |
5097 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5098 | error: | |
5099 | xfree (contents); | |
4ef0d4d0 KS |
5100 | return 0; |
5101 | } | |
5102 | ||
5103 | switch (*p++) | |
5104 | { | |
5105 | case '1': | |
5106 | raw_p = 0, type = PBM_MONO; | |
5107 | break; | |
5108 | ||
5109 | case '2': | |
5110 | raw_p = 0, type = PBM_GRAY; | |
5111 | break; | |
5112 | ||
5113 | case '3': | |
5114 | raw_p = 0, type = PBM_COLOR; | |
5115 | break; | |
5116 | ||
5117 | case '4': | |
5118 | raw_p = 1, type = PBM_MONO; | |
5119 | break; | |
5120 | ||
5121 | case '5': | |
5122 | raw_p = 1, type = PBM_GRAY; | |
5123 | break; | |
5124 | ||
5125 | case '6': | |
5126 | raw_p = 1, type = PBM_COLOR; | |
5127 | break; | |
5128 | ||
5129 | default: | |
5130 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5131 | goto error; | |
5132 | } | |
5133 | ||
5134 | /* Read width, height, maximum color-component. Characters | |
5135 | starting with `#' up to the end of a line are ignored. */ | |
5136 | width = pbm_scan_number (&p, end); | |
5137 | height = pbm_scan_number (&p, end); | |
5138 | ||
5139 | if (type != PBM_MONO) | |
5140 | { | |
5141 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5142 | if (max_color_idx > 65535 || max_color_idx < 0) |
5143 | { | |
5144 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5145 | goto error; | |
5146 | } | |
4ef0d4d0 KS |
5147 | } |
5148 | ||
b9c89e11 JR |
5149 | if (!check_image_size (f, width, height)) |
5150 | { | |
10ea2b82 | 5151 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5152 | goto error; |
5153 | } | |
4ef0d4d0 KS |
5154 | |
5155 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5156 | &ximg, &img->pixmap)) | |
5157 | goto error; | |
5158 | ||
5159 | /* Initialize the color hash table. */ | |
5160 | init_color_table (); | |
5161 | ||
5162 | if (type == PBM_MONO) | |
5163 | { | |
5164 | int c = 0, g; | |
5165 | struct image_keyword fmt[PBM_LAST]; | |
5166 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5167 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5168 | ||
5169 | /* Parse the image specification. */ | |
72af86bd | 5170 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5171 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5172 | ||
5173 | /* Get foreground and background colors, maybe allocate colors. */ | |
5174 | if (fmt[PBM_FOREGROUND].count | |
5175 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5176 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5177 | if (fmt[PBM_BACKGROUND].count | |
5178 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5179 | { | |
5180 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5181 | img->background = bg; | |
5182 | img->background_valid = 1; | |
5183 | } | |
5184 | ||
5185 | for (y = 0; y < height; ++y) | |
5186 | for (x = 0; x < width; ++x) | |
5187 | { | |
5188 | if (raw_p) | |
5189 | { | |
5190 | if ((x & 7) == 0) | |
c295e710 CY |
5191 | { |
5192 | if (p >= end) | |
5193 | { | |
5194 | x_destroy_x_image (ximg); | |
5195 | x_clear_image (f, img); | |
5196 | image_error ("Invalid image size in image `%s'", | |
5197 | img->spec, Qnil); | |
5198 | goto error; | |
5199 | } | |
5200 | c = *p++; | |
5201 | } | |
4ef0d4d0 KS |
5202 | g = c & 0x80; |
5203 | c <<= 1; | |
5204 | } | |
5205 | else | |
5206 | g = pbm_scan_number (&p, end); | |
5207 | ||
5208 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5209 | } | |
5210 | } | |
5211 | else | |
5212 | { | |
b9c89e11 JR |
5213 | int expected_size = height * width; |
5214 | if (max_color_idx > 255) | |
5215 | expected_size *= 2; | |
5216 | if (type == PBM_COLOR) | |
5217 | expected_size *= 3; | |
5218 | ||
5219 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5220 | { |
5221 | x_destroy_x_image (ximg); | |
fb0b0862 | 5222 | x_clear_image (f, img); |
39e653ea CY |
5223 | image_error ("Invalid image size in image `%s'", |
5224 | img->spec, Qnil); | |
5225 | goto error; | |
5226 | } | |
5227 | ||
4ef0d4d0 KS |
5228 | for (y = 0; y < height; ++y) |
5229 | for (x = 0; x < width; ++x) | |
5230 | { | |
5231 | int r, g, b; | |
5232 | ||
b9c89e11 JR |
5233 | if (type == PBM_GRAY && raw_p) |
5234 | { | |
5235 | r = g = b = *p++; | |
5236 | if (max_color_idx > 255) | |
5237 | r = g = b = r * 256 + *p++; | |
5238 | } | |
5239 | else if (type == PBM_GRAY) | |
5240 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5241 | else if (raw_p) |
5242 | { | |
5243 | r = *p++; | |
b9c89e11 JR |
5244 | if (max_color_idx > 255) |
5245 | r = r * 256 + *p++; | |
4ef0d4d0 | 5246 | g = *p++; |
b9c89e11 JR |
5247 | if (max_color_idx > 255) |
5248 | g = g * 256 + *p++; | |
4ef0d4d0 | 5249 | b = *p++; |
b9c89e11 JR |
5250 | if (max_color_idx > 255) |
5251 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5252 | } |
5253 | else | |
5254 | { | |
5255 | r = pbm_scan_number (&p, end); | |
5256 | g = pbm_scan_number (&p, end); | |
5257 | b = pbm_scan_number (&p, end); | |
5258 | } | |
5259 | ||
5260 | if (r < 0 || g < 0 || b < 0) | |
5261 | { | |
5262 | x_destroy_x_image (ximg); | |
5263 | image_error ("Invalid pixel value in image `%s'", | |
5264 | img->spec, Qnil); | |
5265 | goto error; | |
5266 | } | |
5267 | ||
5268 | /* RGB values are now in the range 0..max_color_idx. | |
5269 | Scale this to the range 0..0xffff supported by X. */ | |
5270 | r = (double) r * 65535 / max_color_idx; | |
5271 | g = (double) g * 65535 / max_color_idx; | |
5272 | b = (double) b * 65535 / max_color_idx; | |
5273 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5274 | } | |
5275 | } | |
5276 | ||
5277 | #ifdef COLOR_TABLE_SUPPORT | |
5278 | /* Store in IMG->colors the colors allocated for the image, and | |
5279 | free the color table. */ | |
5280 | img->colors = colors_in_color_table (&img->ncolors); | |
5281 | free_color_table (); | |
5282 | #endif /* COLOR_TABLE_SUPPORT */ | |
5283 | ||
5284 | img->width = width; | |
5285 | img->height = height; | |
5286 | ||
5287 | /* Maybe fill in the background field while we have ximg handy. */ | |
5288 | ||
5289 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5290 | /* Casting avoids a GCC warning. */ |
5291 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5292 | |
5293 | /* Put the image into a pixmap. */ | |
5294 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5295 | x_destroy_x_image (ximg); | |
5296 | ||
5297 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5298 | img->width = width; |
4ef0d4d0 KS |
5299 | img->height = height; */ |
5300 | ||
4ef0d4d0 KS |
5301 | xfree (contents); |
5302 | return 1; | |
5303 | } | |
5304 | ||
5305 | \f | |
5306 | /*********************************************************************** | |
5307 | PNG | |
5308 | ***********************************************************************/ | |
5309 | ||
9e2a2647 | 5310 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5311 | |
5312 | /* Function prototypes. */ | |
5313 | ||
f57e2426 J |
5314 | static int png_image_p (Lisp_Object object); |
5315 | static int png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5316 | |
5317 | /* The symbol `png' identifying images of this type. */ | |
5318 | ||
955cbe7b | 5319 | static Lisp_Object Qpng; |
4ef0d4d0 KS |
5320 | |
5321 | /* Indices of image specification fields in png_format, below. */ | |
5322 | ||
5323 | enum png_keyword_index | |
5324 | { | |
5325 | PNG_TYPE, | |
5326 | PNG_DATA, | |
5327 | PNG_FILE, | |
5328 | PNG_ASCENT, | |
5329 | PNG_MARGIN, | |
5330 | PNG_RELIEF, | |
5331 | PNG_ALGORITHM, | |
5332 | PNG_HEURISTIC_MASK, | |
5333 | PNG_MASK, | |
5334 | PNG_BACKGROUND, | |
5335 | PNG_LAST | |
5336 | }; | |
5337 | ||
5338 | /* Vector of image_keyword structures describing the format | |
5339 | of valid user-defined image specifications. */ | |
5340 | ||
91433552 | 5341 | static const struct image_keyword png_format[PNG_LAST] = |
4ef0d4d0 KS |
5342 | { |
5343 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5344 | {":data", IMAGE_STRING_VALUE, 0}, | |
5345 | {":file", IMAGE_STRING_VALUE, 0}, | |
5346 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5347 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5348 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5349 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5350 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5351 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5352 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5353 | }; | |
5354 | ||
5355 | /* Structure describing the image type `png'. */ | |
5356 | ||
5357 | static struct image_type png_type = | |
5358 | { | |
5359 | &Qpng, | |
5360 | png_image_p, | |
5361 | png_load, | |
5362 | x_clear_image, | |
5363 | NULL | |
5364 | }; | |
5365 | ||
5366 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5367 | ||
5368 | static int | |
d3da34e0 | 5369 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5370 | { |
5371 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5372 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5373 | |
5374 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5375 | return 0; | |
5376 | ||
5377 | /* Must specify either the :data or :file keyword. */ | |
5378 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5379 | } | |
5380 | ||
9e2a2647 | 5381 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5382 | |
5383 | ||
5384 | #ifdef HAVE_PNG | |
5385 | ||
4ef0d4d0 KS |
5386 | #ifdef HAVE_NTGUI |
5387 | /* PNG library details. */ | |
5388 | ||
14beddf4 CY |
5389 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5390 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5391 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5392 | png_error_ptr, png_error_ptr)); | |
5393 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5394 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5395 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5396 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5397 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5398 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5399 | png_uint_32 *, png_uint_32 *, |
5400 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5401 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5402 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5403 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5404 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5405 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5406 | int, int, double)); |
14beddf4 CY |
5407 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5408 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5409 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5410 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5411 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5412 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5413 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5414 | |
7f9c5df9 | 5415 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5416 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5417 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5418 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 KS |
5419 | |
5420 | static int | |
0855eb52 | 5421 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
5422 | { |
5423 | HMODULE library; | |
5424 | ||
0855eb52 | 5425 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
5426 | return 0; |
5427 | ||
5428 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5429 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5430 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5431 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5432 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5433 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5434 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5435 | LOAD_IMGLIB_FN (library, png_read_info); | |
5436 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5437 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5438 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5439 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5440 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5441 | LOAD_IMGLIB_FN (library, png_set_background); | |
5442 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5443 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5444 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5445 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5446 | LOAD_IMGLIB_FN (library, png_read_image); | |
5447 | LOAD_IMGLIB_FN (library, png_read_end); | |
5448 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5449 | |
5450 | #if (PNG_LIBPNG_VER >= 10500) | |
5451 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5452 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5453 | #endif /* libpng version >= 1.5 */ | |
5454 | ||
4ef0d4d0 KS |
5455 | return 1; |
5456 | } | |
5457 | #else | |
5458 | ||
5459 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5460 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5461 | #define fn_png_create_read_struct png_create_read_struct |
5462 | #define fn_png_create_info_struct png_create_info_struct | |
5463 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5464 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5465 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5466 | #define fn_png_read_info png_read_info | |
5467 | #define fn_png_get_IHDR png_get_IHDR | |
5468 | #define fn_png_get_valid png_get_valid | |
5469 | #define fn_png_set_strip_16 png_set_strip_16 | |
5470 | #define fn_png_set_expand png_set_expand | |
5471 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5472 | #define fn_png_set_background png_set_background | |
5473 | #define fn_png_get_bKGD png_get_bKGD | |
5474 | #define fn_png_read_update_info png_read_update_info | |
5475 | #define fn_png_get_channels png_get_channels | |
5476 | #define fn_png_get_rowbytes png_get_rowbytes | |
5477 | #define fn_png_read_image png_read_image | |
5478 | #define fn_png_read_end png_read_end | |
5479 | #define fn_png_error png_error | |
5480 | ||
7f9c5df9 CY |
5481 | #if (PNG_LIBPNG_VER >= 10500) |
5482 | #define fn_png_longjmp png_longjmp | |
5483 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5484 | #endif /* libpng version >= 1.5 */ | |
5485 | ||
4ef0d4d0 KS |
5486 | #endif /* HAVE_NTGUI */ |
5487 | ||
7f9c5df9 CY |
5488 | |
5489 | #if (PNG_LIBPNG_VER < 10500) | |
c2e79cb4 | 5490 | #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5491 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5492 | #else | |
df61c790 | 5493 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5494 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5495 | #define PNG_JMPBUF(ptr) \ |
df61c790 | 5496 | (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5497 | #endif |
5498 | ||
4ef0d4d0 KS |
5499 | /* Error and warning handlers installed when the PNG library |
5500 | is initialized. */ | |
5501 | ||
ec6cf4c6 | 5502 | static void my_png_error (png_struct *, const char *) NO_RETURN; |
4ef0d4d0 | 5503 | static void |
d3da34e0 | 5504 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5505 | { |
5506 | xassert (png_ptr != NULL); | |
5be1c984 EZ |
5507 | /* Avoid compiler warning about deprecated direct access to |
5508 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5509 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5510 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5511 | } |
5512 | ||
5513 | ||
5514 | static void | |
d3da34e0 | 5515 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5516 | { |
5517 | xassert (png_ptr != NULL); | |
5518 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
5519 | } | |
5520 | ||
5521 | /* Memory source for PNG decoding. */ | |
5522 | ||
5523 | struct png_memory_storage | |
5524 | { | |
5525 | unsigned char *bytes; /* The data */ | |
5526 | size_t len; /* How big is it? */ | |
5527 | int index; /* Where are we? */ | |
5528 | }; | |
5529 | ||
5530 | ||
5531 | /* Function set as reader function when reading PNG image from memory. | |
5532 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5533 | bytes from the input to DATA. */ | |
5534 | ||
5535 | static void | |
d3da34e0 | 5536 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5537 | { |
5538 | struct png_memory_storage *tbr | |
5539 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5540 | ||
5541 | if (length > tbr->len - tbr->index) | |
5542 | fn_png_error (png_ptr, "Read error"); | |
5543 | ||
72af86bd | 5544 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5545 | tbr->index = tbr->index + length; |
5546 | } | |
5547 | ||
b0da69a7 | 5548 | |
9a22a004 JB |
5549 | /* Function set as reader function when reading PNG image from a file. |
5550 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5551 | bytes from the input to DATA. */ | |
5552 | ||
5553 | static void | |
d3da34e0 | 5554 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5555 | { |
5556 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5557 | ||
5558 | if (fread (data, 1, length, fp) < length) | |
5559 | fn_png_error (png_ptr, "Read error"); | |
5560 | } | |
5561 | ||
5562 | ||
4ef0d4d0 KS |
5563 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
5564 | successful. */ | |
5565 | ||
5566 | static int | |
d3da34e0 | 5567 | png_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5568 | { |
5569 | Lisp_Object file, specified_file; | |
5570 | Lisp_Object specified_data; | |
5571 | int x, y, i; | |
5572 | XImagePtr ximg, mask_img = NULL; | |
4ef0d4d0 KS |
5573 | png_struct *png_ptr = NULL; |
5574 | png_info *info_ptr = NULL, *end_info = NULL; | |
5575 | FILE *volatile fp = NULL; | |
5576 | png_byte sig[8]; | |
5577 | png_byte * volatile pixels = NULL; | |
5578 | png_byte ** volatile rows = NULL; | |
5579 | png_uint_32 width, height; | |
5580 | int bit_depth, color_type, interlace_type; | |
5581 | png_byte channels; | |
5582 | png_uint_32 row_bytes; | |
5583 | int transparent_p; | |
4ef0d4d0 KS |
5584 | struct png_memory_storage tbr; /* Data to be read */ |
5585 | ||
5586 | /* Find out what file to load. */ | |
5587 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5588 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5589 | |
5590 | if (NILP (specified_data)) | |
5591 | { | |
5592 | file = x_find_image_file (specified_file); | |
5593 | if (!STRINGP (file)) | |
5594 | { | |
5595 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5596 | return 0; |
5597 | } | |
5598 | ||
5599 | /* Open the image file. */ | |
42a5b22f | 5600 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5601 | if (!fp) |
5602 | { | |
5603 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5604 | return 0; |
5605 | } | |
5606 | ||
5607 | /* Check PNG signature. */ | |
5608 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5609 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5610 | { |
5611 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5612 | fclose (fp); |
5613 | return 0; | |
5614 | } | |
5615 | } | |
5616 | else | |
5617 | { | |
7574650a AS |
5618 | if (!STRINGP (specified_data)) |
5619 | { | |
5620 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5621 | return 0; | |
5622 | } | |
5623 | ||
4ef0d4d0 KS |
5624 | /* Read from memory. */ |
5625 | tbr.bytes = SDATA (specified_data); | |
5626 | tbr.len = SBYTES (specified_data); | |
5627 | tbr.index = 0; | |
5628 | ||
5629 | /* Check PNG signature. */ | |
5630 | if (tbr.len < sizeof sig | |
285d07e2 | 5631 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5632 | { |
5633 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5634 | return 0; |
5635 | } | |
5636 | ||
5637 | /* Need to skip past the signature. */ | |
5638 | tbr.bytes += sizeof (sig); | |
5639 | } | |
5640 | ||
df61c790 AS |
5641 | /* Initialize read and info structs for PNG lib. */ |
5642 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5643 | NULL, my_png_error, | |
5644 | my_png_warning); | |
4ef0d4d0 KS |
5645 | if (!png_ptr) |
5646 | { | |
5647 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5648 | return 0; |
5649 | } | |
5650 | ||
df61c790 | 5651 | info_ptr = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5652 | if (!info_ptr) |
5653 | { | |
5654 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
5655 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5656 | return 0; |
5657 | } | |
5658 | ||
df61c790 | 5659 | end_info = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5660 | if (!end_info) |
5661 | { | |
5662 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
5663 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5664 | return 0; |
5665 | } | |
5666 | ||
5667 | /* Set error jump-back. We come back here when the PNG library | |
5668 | detects an error. */ | |
7f9c5df9 | 5669 | if (setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5670 | { |
5671 | error: | |
5672 | if (png_ptr) | |
5673 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5674 | xfree (pixels); | |
5675 | xfree (rows); | |
5676 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5677 | return 0; |
5678 | } | |
5679 | ||
5680 | /* Read image info. */ | |
5681 | if (!NILP (specified_data)) | |
5682 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5683 | else | |
9a22a004 | 5684 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5685 | |
5686 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5687 | fn_png_read_info (png_ptr, info_ptr); | |
5688 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5689 | &interlace_type, NULL, NULL); | |
5690 | ||
f1f25b99 | 5691 | if (!check_image_size (f, width, height)) |
10ea2b82 JR |
5692 | { |
5693 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5694 | goto error; | |
5695 | } | |
4ef0d4d0 KS |
5696 | /* If image contains simply transparency data, we prefer to |
5697 | construct a clipping mask. */ | |
5698 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5699 | transparent_p = 1; | |
5700 | else | |
5701 | transparent_p = 0; | |
5702 | ||
5703 | /* This function is easier to write if we only have to handle | |
5704 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5705 | transform other formats into that format. */ | |
5706 | ||
5707 | /* Strip more than 8 bits per channel. */ | |
5708 | if (bit_depth == 16) | |
5709 | fn_png_set_strip_16 (png_ptr); | |
5710 | ||
5711 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5712 | if available. */ | |
5713 | fn_png_set_expand (png_ptr); | |
5714 | ||
5715 | /* Convert grayscale images to RGB. */ | |
5716 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5717 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5718 | fn_png_set_gray_to_rgb (png_ptr); | |
5719 | ||
4ef0d4d0 KS |
5720 | /* Handle alpha channel by combining the image with a background |
5721 | color. Do this only if a real alpha channel is supplied. For | |
5722 | simple transparency, we prefer a clipping mask. */ | |
5723 | if (!transparent_p) | |
5724 | { | |
917ac1a9 | 5725 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5726 | Lisp_Object specified_bg |
5727 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5728 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5729 | |
5730 | if (STRINGP (specified_bg)) | |
5731 | /* The user specified `:background', use that. */ | |
5732 | { | |
4ef0d4d0 | 5733 | XColor color; |
42a5b22f | 5734 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5735 | { |
5736 | png_color_16 user_bg; | |
5737 | ||
72af86bd | 5738 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5739 | user_bg.red = color.red >> shift; |
5740 | user_bg.green = color.green >> shift; | |
5741 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5742 | |
5743 | fn_png_set_background (png_ptr, &user_bg, | |
5744 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5745 | } | |
5746 | } | |
4ef0d4d0 KS |
5747 | else |
5748 | { | |
c4f13f44 CY |
5749 | /* We use the current frame background, ignoring any default |
5750 | background color set by the image. */ | |
8b7d0a16 | 5751 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5752 | XColor color; |
5753 | png_color_16 frame_background; | |
5754 | ||
5755 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5756 | x_query_color (f, &color); | |
5757 | ||
72af86bd | 5758 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5759 | frame_background.red = color.red >> shift; |
5760 | frame_background.green = color.green >> shift; | |
5761 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5762 | #endif /* HAVE_X_WINDOWS */ |
5763 | ||
4ef0d4d0 KS |
5764 | fn_png_set_background (png_ptr, &frame_background, |
5765 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5766 | } | |
5767 | } | |
5768 | ||
5769 | /* Update info structure. */ | |
5770 | fn_png_read_update_info (png_ptr, info_ptr); | |
5771 | ||
5772 | /* Get number of channels. Valid values are 1 for grayscale images | |
5773 | and images with a palette, 2 for grayscale images with transparency | |
5774 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5775 | images with alpha channel, i.e. RGBA. If conversions above were | |
5776 | sufficient we should only have 3 or 4 channels here. */ | |
5777 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
5778 | xassert (channels == 3 || channels == 4); | |
5779 | ||
5780 | /* Number of bytes needed for one row of the image. */ | |
5781 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5782 | ||
5783 | /* Allocate memory for the image. */ | |
5784 | pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels); | |
5785 | rows = (png_byte **) xmalloc (height * sizeof *rows); | |
5786 | for (i = 0; i < height; ++i) | |
5787 | rows[i] = pixels + i * row_bytes; | |
5788 | ||
5789 | /* Read the entire image. */ | |
5790 | fn_png_read_image (png_ptr, rows); | |
5791 | fn_png_read_end (png_ptr, info_ptr); | |
5792 | if (fp) | |
5793 | { | |
5794 | fclose (fp); | |
5795 | fp = NULL; | |
5796 | } | |
5797 | ||
5798 | /* Create the X image and pixmap. */ | |
5799 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5800 | &img->pixmap)) | |
5801 | goto error; | |
5802 | ||
5803 | /* Create an image and pixmap serving as mask if the PNG image | |
5804 | contains an alpha channel. */ | |
5805 | if (channels == 4 | |
5806 | && !transparent_p | |
5807 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5808 | &mask_img, &img->mask)) | |
5809 | { | |
5810 | x_destroy_x_image (ximg); | |
5811 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5812 | img->pixmap = NO_PIXMAP; | |
5813 | goto error; | |
5814 | } | |
5815 | ||
5816 | /* Fill the X image and mask from PNG data. */ | |
5817 | init_color_table (); | |
5818 | ||
5819 | for (y = 0; y < height; ++y) | |
5820 | { | |
5821 | png_byte *p = rows[y]; | |
5822 | ||
5823 | for (x = 0; x < width; ++x) | |
5824 | { | |
5825 | unsigned r, g, b; | |
5826 | ||
5827 | r = *p++ << 8; | |
5828 | g = *p++ << 8; | |
5829 | b = *p++ << 8; | |
5830 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5831 | /* An alpha channel, aka mask channel, associates variable | |
5832 | transparency with an image. Where other image formats | |
5833 | support binary transparency---fully transparent or fully | |
5834 | opaque---PNG allows up to 254 levels of partial transparency. | |
5835 | The PNG library implements partial transparency by combining | |
5836 | the image with a specified background color. | |
5837 | ||
5838 | I'm not sure how to handle this here nicely: because the | |
5839 | background on which the image is displayed may change, for | |
5840 | real alpha channel support, it would be necessary to create | |
5841 | a new image for each possible background. | |
5842 | ||
5843 | What I'm doing now is that a mask is created if we have | |
5844 | boolean transparency information. Otherwise I'm using | |
5845 | the frame's background color to combine the image with. */ | |
5846 | ||
5847 | if (channels == 4) | |
5848 | { | |
5849 | if (mask_img) | |
9ecf6403 | 5850 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5851 | ++p; |
5852 | } | |
5853 | } | |
5854 | } | |
5855 | ||
5856 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5857 | /* Set IMG's background color from the PNG image, unless the user | |
5858 | overrode it. */ | |
5859 | { | |
5860 | png_color_16 *bg; | |
5861 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5862 | { | |
5863 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5864 | img->background_valid = 1; | |
5865 | } | |
5866 | } | |
5867 | ||
5868 | #ifdef COLOR_TABLE_SUPPORT | |
5869 | /* Remember colors allocated for this image. */ | |
5870 | img->colors = colors_in_color_table (&img->ncolors); | |
5871 | free_color_table (); | |
5872 | #endif /* COLOR_TABLE_SUPPORT */ | |
5873 | ||
5874 | /* Clean up. */ | |
5875 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5876 | xfree (rows); | |
5877 | xfree (pixels); | |
5878 | ||
5879 | img->width = width; | |
5880 | img->height = height; | |
5881 | ||
2e09fef1 EZ |
5882 | /* Maybe fill in the background field while we have ximg handy. |
5883 | Casting avoids a GCC warning. */ | |
5884 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5885 | |
5886 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5887 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5888 | x_destroy_x_image (ximg); | |
5889 | ||
5890 | /* Same for the mask. */ | |
5891 | if (mask_img) | |
5892 | { | |
2e09fef1 EZ |
5893 | /* Fill in the background_transparent field while we have the |
5894 | mask handy. Casting avoids a GCC warning. */ | |
5895 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5896 | |
5897 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5898 | x_destroy_x_image (mask_img); | |
5899 | } | |
5900 | ||
4ef0d4d0 KS |
5901 | return 1; |
5902 | } | |
5903 | ||
5904 | #else /* HAVE_PNG */ | |
5905 | ||
edfda783 AR |
5906 | #ifdef HAVE_NS |
5907 | static int | |
5908 | png_load (struct frame *f, struct image *img) | |
5909 | { | |
5910 | return ns_load_image(f, img, | |
5911 | image_spec_value (img->spec, QCfile, NULL), | |
5912 | image_spec_value (img->spec, QCdata, NULL)); | |
5913 | } | |
5914 | #endif /* HAVE_NS */ | |
5915 | ||
5916 | ||
4ef0d4d0 KS |
5917 | #endif /* !HAVE_PNG */ |
5918 | ||
5919 | ||
5920 | \f | |
5921 | /*********************************************************************** | |
5922 | JPEG | |
5923 | ***********************************************************************/ | |
5924 | ||
9e2a2647 | 5925 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5926 | |
f57e2426 J |
5927 | static int jpeg_image_p (Lisp_Object object); |
5928 | static int jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5929 | |
5930 | /* The symbol `jpeg' identifying images of this type. */ | |
5931 | ||
955cbe7b | 5932 | static Lisp_Object Qjpeg; |
4ef0d4d0 KS |
5933 | |
5934 | /* Indices of image specification fields in gs_format, below. */ | |
5935 | ||
5936 | enum jpeg_keyword_index | |
5937 | { | |
5938 | JPEG_TYPE, | |
5939 | JPEG_DATA, | |
5940 | JPEG_FILE, | |
5941 | JPEG_ASCENT, | |
5942 | JPEG_MARGIN, | |
5943 | JPEG_RELIEF, | |
5944 | JPEG_ALGORITHM, | |
5945 | JPEG_HEURISTIC_MASK, | |
5946 | JPEG_MASK, | |
5947 | JPEG_BACKGROUND, | |
5948 | JPEG_LAST | |
5949 | }; | |
5950 | ||
5951 | /* Vector of image_keyword structures describing the format | |
5952 | of valid user-defined image specifications. */ | |
5953 | ||
91433552 | 5954 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
4ef0d4d0 KS |
5955 | { |
5956 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5957 | {":data", IMAGE_STRING_VALUE, 0}, | |
5958 | {":file", IMAGE_STRING_VALUE, 0}, | |
5959 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5960 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5961 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5962 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5963 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5964 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5965 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5966 | }; | |
5967 | ||
5968 | /* Structure describing the image type `jpeg'. */ | |
5969 | ||
5970 | static struct image_type jpeg_type = | |
5971 | { | |
5972 | &Qjpeg, | |
5973 | jpeg_image_p, | |
5974 | jpeg_load, | |
5975 | x_clear_image, | |
5976 | NULL | |
5977 | }; | |
5978 | ||
5979 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
5980 | ||
5981 | static int | |
d3da34e0 | 5982 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5983 | { |
5984 | struct image_keyword fmt[JPEG_LAST]; | |
5985 | ||
72af86bd | 5986 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
5987 | |
5988 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
5989 | return 0; | |
5990 | ||
5991 | /* Must specify either the :data or :file keyword. */ | |
5992 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
5993 | } | |
5994 | ||
9e2a2647 | 5995 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
5996 | |
5997 | #ifdef HAVE_JPEG | |
5998 | ||
5999 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6000 | jconfig.h. */ | |
6001 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6002 | #undef HAVE_STDLIB_H |
6003 | #endif /* HAVE_STLIB_H */ | |
6004 | ||
66354420 | 6005 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6006 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6007 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6008 | #define __WIN32__ 1 |
6009 | #endif | |
6010 | ||
4ef0d4d0 KS |
6011 | #include <jpeglib.h> |
6012 | #include <jerror.h> | |
4ef0d4d0 KS |
6013 | |
6014 | #ifdef HAVE_STLIB_H_1 | |
6015 | #define HAVE_STDLIB_H 1 | |
6016 | #endif | |
6017 | ||
6018 | #ifdef HAVE_NTGUI | |
6019 | ||
6020 | /* JPEG library details. */ | |
14beddf4 CY |
6021 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6022 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6023 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6024 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6025 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6026 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6027 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6028 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 KS |
6029 | |
6030 | static int | |
0855eb52 | 6031 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6032 | { |
6033 | HMODULE library; | |
6034 | ||
0855eb52 | 6035 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6036 | return 0; |
6037 | ||
6038 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6039 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6040 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6041 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6042 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6043 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6044 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6045 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6046 | return 1; | |
6047 | } | |
6048 | ||
6049 | /* Wrapper since we can't directly assign the function pointer | |
6050 | to another function pointer that was declared more completely easily. */ | |
6051 | static boolean | |
7c3320d8 | 6052 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6053 | { |
6054 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6055 | } | |
6056 | ||
6057 | #else | |
6058 | ||
6059 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a) | |
6060 | #define fn_jpeg_start_decompress jpeg_start_decompress | |
6061 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6062 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6063 | #define fn_jpeg_read_header jpeg_read_header | |
6064 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6065 | #define fn_jpeg_std_error jpeg_std_error |
6066 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6067 | ||
6068 | #endif /* HAVE_NTGUI */ | |
6069 | ||
6070 | struct my_jpeg_error_mgr | |
6071 | { | |
6072 | struct jpeg_error_mgr pub; | |
6073 | jmp_buf setjmp_buffer; | |
6074 | }; | |
6075 | ||
6076 | ||
ec6cf4c6 | 6077 | static void my_error_exit (j_common_ptr) NO_RETURN; |
4ef0d4d0 | 6078 | static void |
d3da34e0 | 6079 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6080 | { |
6081 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6082 | longjmp (mgr->setjmp_buffer, 1); | |
6083 | } | |
6084 | ||
6085 | ||
6086 | /* Init source method for JPEG data source manager. Called by | |
6087 | jpeg_read_header() before any data is actually read. See | |
6088 | libjpeg.doc from the JPEG lib distribution. */ | |
6089 | ||
6090 | static void | |
d3da34e0 | 6091 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6092 | { |
6093 | } | |
6094 | ||
6095 | ||
6096 | /* Method to terminate data source. Called by | |
6097 | jpeg_finish_decompress() after all data has been processed. */ | |
6098 | ||
6099 | static void | |
d3da34e0 | 6100 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6101 | { |
6102 | } | |
6103 | ||
6104 | ||
6105 | /* Fill input buffer method for JPEG data source manager. Called | |
6106 | whenever more data is needed. We read the whole image in one step, | |
6107 | so this only adds a fake end of input marker at the end. */ | |
6108 | ||
5a1539f3 | 6109 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6110 | |
4ef0d4d0 | 6111 | static boolean |
d3da34e0 | 6112 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6113 | { |
6114 | /* Insert a fake EOI marker. */ | |
6115 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6116 | |
5a1539f3 MB |
6117 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6118 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6119 | |
5a1539f3 | 6120 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6121 | src->bytes_in_buffer = 2; |
e0e30823 | 6122 | return 1; |
4ef0d4d0 KS |
6123 | } |
6124 | ||
6125 | ||
6126 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6127 | is the JPEG data source manager. */ | |
6128 | ||
6129 | static void | |
d3da34e0 | 6130 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6131 | { |
6132 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6133 | ||
6134 | if (src) | |
6135 | { | |
6136 | if (num_bytes > src->bytes_in_buffer) | |
6137 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6138 | ||
6139 | src->bytes_in_buffer -= num_bytes; | |
6140 | src->next_input_byte += num_bytes; | |
6141 | } | |
6142 | } | |
6143 | ||
6144 | ||
4ef0d4d0 KS |
6145 | /* Set up the JPEG lib for reading an image from DATA which contains |
6146 | LEN bytes. CINFO is the decompression info structure created for | |
6147 | reading the image. */ | |
6148 | ||
6149 | static void | |
d3da34e0 | 6150 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len) |
4ef0d4d0 KS |
6151 | { |
6152 | struct jpeg_source_mgr *src; | |
6153 | ||
6154 | if (cinfo->src == NULL) | |
6155 | { | |
6156 | /* First time for this JPEG object? */ | |
6157 | cinfo->src = (struct jpeg_source_mgr *) | |
6158 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6159 | sizeof (struct jpeg_source_mgr)); | |
6160 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6161 | src->next_input_byte = data; | |
6162 | } | |
6163 | ||
6164 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6165 | src->init_source = our_common_init_source; |
6166 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6167 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6168 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6169 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6170 | src->bytes_in_buffer = len; |
6171 | src->next_input_byte = data; | |
6172 | } | |
6173 | ||
6174 | ||
b25a72ab JB |
6175 | struct jpeg_stdio_mgr |
6176 | { | |
6177 | struct jpeg_source_mgr mgr; | |
6178 | boolean finished; | |
6179 | FILE *file; | |
6180 | JOCTET *buffer; | |
6181 | }; | |
6182 | ||
6183 | ||
6184 | /* Size of buffer to read JPEG from file. | |
6185 | Not too big, as we want to use alloc_small. */ | |
6186 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6187 | ||
6188 | ||
6189 | /* Fill input buffer method for JPEG data source manager. Called | |
6190 | whenever more data is needed. The data is read from a FILE *. */ | |
6191 | ||
6192 | static boolean | |
d3da34e0 | 6193 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6194 | { |
6195 | struct jpeg_stdio_mgr *src; | |
6196 | ||
6197 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6198 | if (!src->finished) | |
6199 | { | |
6200 | size_t bytes; | |
6201 | ||
6202 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6203 | if (bytes > 0) | |
6204 | src->mgr.bytes_in_buffer = bytes; | |
6205 | else | |
6206 | { | |
6207 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6208 | src->finished = 1; | |
6209 | src->buffer[0] = (JOCTET) 0xFF; | |
6210 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6211 | src->mgr.bytes_in_buffer = 2; | |
6212 | } | |
6213 | src->mgr.next_input_byte = src->buffer; | |
6214 | } | |
6215 | ||
6216 | return 1; | |
6217 | } | |
6218 | ||
6219 | ||
6220 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6221 | is the JPEG data source manager. */ | |
6222 | ||
6223 | static void | |
d3da34e0 | 6224 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6225 | { |
6226 | struct jpeg_stdio_mgr *src; | |
6227 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6228 | ||
6229 | while (num_bytes > 0 && !src->finished) | |
6230 | { | |
6231 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6232 | { | |
6233 | src->mgr.bytes_in_buffer -= num_bytes; | |
6234 | src->mgr.next_input_byte += num_bytes; | |
6235 | break; | |
6236 | } | |
6237 | else | |
6238 | { | |
6239 | num_bytes -= src->mgr.bytes_in_buffer; | |
6240 | src->mgr.bytes_in_buffer = 0; | |
6241 | src->mgr.next_input_byte = NULL; | |
6242 | ||
6243 | our_stdio_fill_input_buffer (cinfo); | |
6244 | } | |
6245 | } | |
6246 | } | |
6247 | ||
6248 | ||
6249 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6250 | CINFO is the decompression info structure created for | |
6251 | reading the image. */ | |
6252 | ||
6253 | static void | |
d3da34e0 | 6254 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6255 | { |
6256 | struct jpeg_stdio_mgr *src; | |
6257 | ||
6258 | if (cinfo->src != NULL) | |
6259 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6260 | else | |
6261 | { | |
6262 | /* First time for this JPEG object? */ | |
6263 | cinfo->src = (struct jpeg_source_mgr *) | |
6264 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6265 | sizeof (struct jpeg_stdio_mgr)); | |
6266 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6267 | src->buffer = (JOCTET *) | |
6268 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6269 | JPEG_STDIO_BUFFER_SIZE); | |
6270 | } | |
6271 | ||
6272 | src->file = fp; | |
6273 | src->finished = 0; | |
6274 | src->mgr.init_source = our_common_init_source; | |
6275 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6276 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6277 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6278 | src->mgr.term_source = our_common_term_source; | |
6279 | src->mgr.bytes_in_buffer = 0; | |
6280 | src->mgr.next_input_byte = NULL; | |
6281 | } | |
6282 | ||
6283 | ||
4ef0d4d0 KS |
6284 | /* Load image IMG for use on frame F. Patterned after example.c |
6285 | from the JPEG lib. */ | |
6286 | ||
6287 | static int | |
d3da34e0 | 6288 | jpeg_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6289 | { |
6290 | struct jpeg_decompress_struct cinfo; | |
6291 | struct my_jpeg_error_mgr mgr; | |
6292 | Lisp_Object file, specified_file; | |
6293 | Lisp_Object specified_data; | |
6294 | FILE * volatile fp = NULL; | |
6295 | JSAMPARRAY buffer; | |
6296 | int row_stride, x, y; | |
6297 | XImagePtr ximg = NULL; | |
6298 | int rc; | |
6299 | unsigned long *colors; | |
6300 | int width, height; | |
4ef0d4d0 KS |
6301 | |
6302 | /* Open the JPEG file. */ | |
6303 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6304 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6305 | |
6306 | if (NILP (specified_data)) | |
6307 | { | |
6308 | file = x_find_image_file (specified_file); | |
6309 | if (!STRINGP (file)) | |
6310 | { | |
6311 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6312 | return 0; |
6313 | } | |
6314 | ||
42a5b22f | 6315 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6316 | if (fp == NULL) |
6317 | { | |
6318 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6319 | return 0; |
6320 | } | |
6321 | } | |
7574650a AS |
6322 | else if (!STRINGP (specified_data)) |
6323 | { | |
6324 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6325 | return 0; | |
6326 | } | |
4ef0d4d0 KS |
6327 | |
6328 | /* Customize libjpeg's error handling to call my_error_exit when an | |
df61c790 AS |
6329 | error is detected. This function will perform a longjmp. */ |
6330 | cinfo.err = fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
6331 | mgr.pub.error_exit = my_error_exit; |
6332 | ||
6333 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
6334 | { | |
6335 | if (rc == 1) | |
6336 | { | |
6337 | /* Called from my_error_exit. Display a JPEG error. */ | |
6ae141d6 PE |
6338 | char buf[JMSG_LENGTH_MAX]; |
6339 | cinfo.err->format_message ((j_common_ptr) &cinfo, buf); | |
4ef0d4d0 | 6340 | image_error ("Error reading JPEG image `%s': %s", img->spec, |
6ae141d6 | 6341 | build_string (buf)); |
4ef0d4d0 KS |
6342 | } |
6343 | ||
6344 | /* Close the input file and destroy the JPEG object. */ | |
6345 | if (fp) | |
6346 | fclose ((FILE *) fp); | |
6347 | fn_jpeg_destroy_decompress (&cinfo); | |
6348 | ||
6349 | /* If we already have an XImage, free that. */ | |
6350 | x_destroy_x_image (ximg); | |
6351 | ||
6352 | /* Free pixmap and colors. */ | |
6353 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6354 | return 0; |
6355 | } | |
6356 | ||
6357 | /* Create the JPEG decompression object. Let it read from fp. | |
6358 | Read the JPEG image header. */ | |
6359 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); | |
6360 | ||
6361 | if (NILP (specified_data)) | |
b25a72ab | 6362 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
6363 | else |
6364 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
6365 | SBYTES (specified_data)); | |
6366 | ||
e0e30823 | 6367 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
6368 | |
6369 | /* Customize decompression so that color quantization will be used. | |
6370 | Start decompression. */ | |
e0e30823 | 6371 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
6372 | fn_jpeg_start_decompress (&cinfo); |
6373 | width = img->width = cinfo.output_width; | |
6374 | height = img->height = cinfo.output_height; | |
6375 | ||
f1f25b99 CY |
6376 | if (!check_image_size (f, width, height)) |
6377 | { | |
10ea2b82 | 6378 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
6379 | longjmp (mgr.setjmp_buffer, 2); |
6380 | } | |
6381 | ||
4ef0d4d0 KS |
6382 | /* Create X image and pixmap. */ |
6383 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6384 | longjmp (mgr.setjmp_buffer, 2); | |
6385 | ||
6386 | /* Allocate colors. When color quantization is used, | |
6387 | cinfo.actual_number_of_colors has been set with the number of | |
6388 | colors generated, and cinfo.colormap is a two-dimensional array | |
6389 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
6390 | No more than 255 colors will be generated. */ | |
6391 | { | |
6392 | int i, ir, ig, ib; | |
6393 | ||
6394 | if (cinfo.out_color_components > 2) | |
6395 | ir = 0, ig = 1, ib = 2; | |
6396 | else if (cinfo.out_color_components > 1) | |
6397 | ir = 0, ig = 1, ib = 0; | |
6398 | else | |
6399 | ir = 0, ig = 0, ib = 0; | |
6400 | ||
6401 | /* Use the color table mechanism because it handles colors that | |
6402 | cannot be allocated nicely. Such colors will be replaced with | |
6403 | a default color, and we don't have to care about which colors | |
6404 | can be freed safely, and which can't. */ | |
6405 | init_color_table (); | |
6406 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
6407 | * sizeof *colors); | |
6408 | ||
6409 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
6410 | { | |
6411 | /* Multiply RGB values with 255 because X expects RGB values | |
6412 | in the range 0..0xffff. */ | |
6413 | int r = cinfo.colormap[ir][i] << 8; | |
6414 | int g = cinfo.colormap[ig][i] << 8; | |
6415 | int b = cinfo.colormap[ib][i] << 8; | |
6416 | colors[i] = lookup_rgb_color (f, r, g, b); | |
6417 | } | |
6418 | ||
6419 | #ifdef COLOR_TABLE_SUPPORT | |
6420 | /* Remember those colors actually allocated. */ | |
6421 | img->colors = colors_in_color_table (&img->ncolors); | |
6422 | free_color_table (); | |
6423 | #endif /* COLOR_TABLE_SUPPORT */ | |
6424 | } | |
6425 | ||
6426 | /* Read pixels. */ | |
6427 | row_stride = width * cinfo.output_components; | |
6428 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
6429 | row_stride, 1); | |
6430 | for (y = 0; y < height; ++y) | |
6431 | { | |
6432 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
6433 | for (x = 0; x < cinfo.output_width; ++x) | |
6434 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
6435 | } | |
6436 | ||
6437 | /* Clean up. */ | |
6438 | fn_jpeg_finish_decompress (&cinfo); | |
6439 | fn_jpeg_destroy_decompress (&cinfo); | |
6440 | if (fp) | |
6441 | fclose ((FILE *) fp); | |
6442 | ||
6443 | /* Maybe fill in the background field while we have ximg handy. */ | |
6444 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6445 | /* Casting avoids a GCC warning. */ |
6446 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6447 | |
6448 | /* Put the image into the pixmap. */ | |
6449 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6450 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6451 | return 1; |
6452 | } | |
6453 | ||
6454 | #else /* HAVE_JPEG */ | |
6455 | ||
edfda783 AR |
6456 | #ifdef HAVE_NS |
6457 | static int | |
6458 | jpeg_load (struct frame *f, struct image *img) | |
6459 | { | |
ed3751c8 JB |
6460 | return ns_load_image (f, img, |
6461 | image_spec_value (img->spec, QCfile, NULL), | |
6462 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6463 | } |
6464 | #endif /* HAVE_NS */ | |
6465 | ||
4ef0d4d0 KS |
6466 | #endif /* !HAVE_JPEG */ |
6467 | ||
6468 | ||
6469 | \f | |
6470 | /*********************************************************************** | |
6471 | TIFF | |
6472 | ***********************************************************************/ | |
6473 | ||
9e2a2647 | 6474 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6475 | |
f57e2426 J |
6476 | static int tiff_image_p (Lisp_Object object); |
6477 | static int tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6478 | |
6479 | /* The symbol `tiff' identifying images of this type. */ | |
6480 | ||
955cbe7b | 6481 | static Lisp_Object Qtiff; |
4ef0d4d0 KS |
6482 | |
6483 | /* Indices of image specification fields in tiff_format, below. */ | |
6484 | ||
6485 | enum tiff_keyword_index | |
6486 | { | |
6487 | TIFF_TYPE, | |
6488 | TIFF_DATA, | |
6489 | TIFF_FILE, | |
6490 | TIFF_ASCENT, | |
6491 | TIFF_MARGIN, | |
6492 | TIFF_RELIEF, | |
6493 | TIFF_ALGORITHM, | |
6494 | TIFF_HEURISTIC_MASK, | |
6495 | TIFF_MASK, | |
6496 | TIFF_BACKGROUND, | |
58279503 | 6497 | TIFF_INDEX, |
4ef0d4d0 KS |
6498 | TIFF_LAST |
6499 | }; | |
6500 | ||
6501 | /* Vector of image_keyword structures describing the format | |
6502 | of valid user-defined image specifications. */ | |
6503 | ||
91433552 | 6504 | static const struct image_keyword tiff_format[TIFF_LAST] = |
4ef0d4d0 KS |
6505 | { |
6506 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6507 | {":data", IMAGE_STRING_VALUE, 0}, | |
6508 | {":file", IMAGE_STRING_VALUE, 0}, | |
6509 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6510 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6511 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6512 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6513 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6514 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 JR |
6515 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
6516 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
4ef0d4d0 KS |
6517 | }; |
6518 | ||
6519 | /* Structure describing the image type `tiff'. */ | |
6520 | ||
6521 | static struct image_type tiff_type = | |
6522 | { | |
6523 | &Qtiff, | |
6524 | tiff_image_p, | |
6525 | tiff_load, | |
6526 | x_clear_image, | |
6527 | NULL | |
6528 | }; | |
6529 | ||
6530 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
6531 | ||
6532 | static int | |
d3da34e0 | 6533 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6534 | { |
6535 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6536 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6537 | |
6538 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6539 | return 0; | |
6540 | ||
6541 | /* Must specify either the :data or :file keyword. */ | |
6542 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6543 | } | |
6544 | ||
9e2a2647 | 6545 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6546 | |
6547 | #ifdef HAVE_TIFF | |
6548 | ||
6549 | #include <tiffio.h> | |
6550 | ||
6551 | #ifdef HAVE_NTGUI | |
6552 | ||
6553 | /* TIFF library details. */ | |
14beddf4 CY |
6554 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6555 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6556 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6557 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6558 | TIFFReadWriteProc, TIFFReadWriteProc, |
6559 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6560 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6561 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6562 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6563 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6564 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 KS |
6565 | |
6566 | static int | |
0855eb52 | 6567 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6568 | { |
6569 | HMODULE library; | |
6570 | ||
0855eb52 | 6571 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
6572 | return 0; |
6573 | ||
6574 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6575 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6576 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6577 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6578 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6579 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6580 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6581 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6582 | return 1; |
6583 | } | |
6584 | ||
6585 | #else | |
6586 | ||
6587 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6588 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6589 | #define fn_TIFFOpen TIFFOpen | |
6590 | #define fn_TIFFClientOpen TIFFClientOpen | |
6591 | #define fn_TIFFGetField TIFFGetField | |
6592 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6593 | #define fn_TIFFClose TIFFClose | |
58279503 | 6594 | #define fn_TIFFSetDirectory TIFFSetDirectory |
4ef0d4d0 KS |
6595 | #endif /* HAVE_NTGUI */ |
6596 | ||
6597 | ||
6598 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6599 | memory source, but we have to provide a lot of extra functions. | |
6600 | Blah. | |
6601 | ||
6602 | We really only need to implement read and seek, but I am not | |
6603 | convinced that the TIFF library is smart enough not to destroy | |
6604 | itself if we only hand it the function pointers we need to | |
6605 | override. */ | |
6606 | ||
6607 | typedef struct | |
6608 | { | |
6609 | unsigned char *bytes; | |
6610 | size_t len; | |
6611 | int index; | |
6612 | } | |
6613 | tiff_memory_source; | |
6614 | ||
6615 | static size_t | |
d3da34e0 | 6616 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6617 | { |
6618 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6619 | ||
6620 | if (size > src->len - src->index) | |
6621 | return (size_t) -1; | |
72af86bd | 6622 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6623 | src->index += size; |
6624 | return size; | |
6625 | } | |
6626 | ||
6627 | static size_t | |
d3da34e0 | 6628 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6629 | { |
6630 | return (size_t) -1; | |
6631 | } | |
6632 | ||
6633 | static toff_t | |
d3da34e0 | 6634 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6635 | { |
6636 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6637 | int idx; | |
6638 | ||
6639 | switch (whence) | |
6640 | { | |
6641 | case SEEK_SET: /* Go from beginning of source. */ | |
6642 | idx = off; | |
6643 | break; | |
6644 | ||
6645 | case SEEK_END: /* Go from end of source. */ | |
6646 | idx = src->len + off; | |
6647 | break; | |
6648 | ||
6649 | case SEEK_CUR: /* Go from current position. */ | |
6650 | idx = src->index + off; | |
6651 | break; | |
6652 | ||
6653 | default: /* Invalid `whence'. */ | |
6654 | return -1; | |
6655 | } | |
6656 | ||
6657 | if (idx > src->len || idx < 0) | |
6658 | return -1; | |
6659 | ||
6660 | src->index = idx; | |
6661 | return src->index; | |
6662 | } | |
6663 | ||
6664 | static int | |
d3da34e0 | 6665 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6666 | { |
6667 | /* NOOP */ | |
6668 | return 0; | |
6669 | } | |
6670 | ||
6671 | static int | |
d3da34e0 | 6672 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6673 | { |
6674 | /* It is already _IN_ memory. */ | |
6675 | return 0; | |
6676 | } | |
6677 | ||
6678 | static void | |
d3da34e0 | 6679 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6680 | { |
6681 | /* We don't need to do this. */ | |
6682 | } | |
6683 | ||
6684 | static toff_t | |
d3da34e0 | 6685 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6686 | { |
6687 | return ((tiff_memory_source *) data)->len; | |
6688 | } | |
6689 | ||
6690 | ||
5e2d4a30 PE |
6691 | static void tiff_error_handler (const char *, const char *, va_list) |
6692 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6693 | static void |
d3da34e0 | 6694 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 KS |
6695 | { |
6696 | char buf[512]; | |
6697 | int len; | |
6698 | ||
6699 | len = sprintf (buf, "TIFF error: %s ", title); | |
6700 | vsprintf (buf + len, format, ap); | |
6701 | add_to_log (buf, Qnil, Qnil); | |
6702 | } | |
6703 | ||
6704 | ||
5e2d4a30 PE |
6705 | static void tiff_warning_handler (const char *, const char *, va_list) |
6706 | ATTRIBUTE_FORMAT_PRINTF (2, 0); | |
4ef0d4d0 | 6707 | static void |
d3da34e0 | 6708 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 KS |
6709 | { |
6710 | char buf[512]; | |
6711 | int len; | |
6712 | ||
6713 | len = sprintf (buf, "TIFF warning: %s ", title); | |
6714 | vsprintf (buf + len, format, ap); | |
6715 | add_to_log (buf, Qnil, Qnil); | |
6716 | } | |
6717 | ||
6718 | ||
6719 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
6720 | successful. */ | |
6721 | ||
6722 | static int | |
d3da34e0 | 6723 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6724 | { |
6725 | Lisp_Object file, specified_file; | |
6726 | Lisp_Object specified_data; | |
6727 | TIFF *tiff; | |
58279503 | 6728 | int width, height, x, y, count; |
4ef0d4d0 | 6729 | uint32 *buf; |
03d0a109 | 6730 | int rc; |
4ef0d4d0 | 6731 | XImagePtr ximg; |
4ef0d4d0 | 6732 | tiff_memory_source memsrc; |
58279503 | 6733 | Lisp_Object image; |
4ef0d4d0 KS |
6734 | |
6735 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6736 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 | 6737 | |
5e2d4a30 PE |
6738 | fn_TIFFSetErrorHandler ((TIFFErrorHandler) tiff_error_handler); |
6739 | fn_TIFFSetWarningHandler ((TIFFErrorHandler) tiff_warning_handler); | |
4ef0d4d0 KS |
6740 | |
6741 | if (NILP (specified_data)) | |
6742 | { | |
6743 | /* Read from a file */ | |
6744 | file = x_find_image_file (specified_file); | |
6745 | if (!STRINGP (file)) | |
6746 | { | |
6747 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6748 | return 0; |
6749 | } | |
6750 | ||
df61c790 | 6751 | /* Try to open the image file. */ |
b19beacc | 6752 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6753 | if (tiff == NULL) |
6754 | { | |
6755 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6756 | return 0; |
6757 | } | |
6758 | } | |
6759 | else | |
6760 | { | |
7574650a AS |
6761 | if (!STRINGP (specified_data)) |
6762 | { | |
6763 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6764 | return 0; | |
6765 | } | |
6766 | ||
4ef0d4d0 KS |
6767 | /* Memory source! */ |
6768 | memsrc.bytes = SDATA (specified_data); | |
6769 | memsrc.len = SBYTES (specified_data); | |
6770 | memsrc.index = 0; | |
6771 | ||
3082f617 | 6772 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
df61c790 AS |
6773 | (TIFFReadWriteProc) tiff_read_from_memory, |
6774 | (TIFFReadWriteProc) tiff_write_from_memory, | |
6775 | tiff_seek_in_memory, | |
6776 | tiff_close_memory, | |
6777 | tiff_size_of_memory, | |
6778 | tiff_mmap_memory, | |
6779 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6780 | |
6781 | if (!tiff) | |
6782 | { | |
6783 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6784 | return 0; |
6785 | } | |
6786 | } | |
6787 | ||
58279503 JR |
6788 | image = image_spec_value (img->spec, QCindex, NULL); |
6789 | if (INTEGERP (image)) | |
6790 | { | |
6791 | int ino = XFASTINT (image); | |
6792 | if (!fn_TIFFSetDirectory (tiff, ino)) | |
6793 | { | |
6794 | image_error ("Invalid image number `%s' in image `%s'", | |
6795 | image, img->spec); | |
6796 | fn_TIFFClose (tiff); | |
58279503 JR |
6797 | return 0; |
6798 | } | |
6799 | } | |
6800 | ||
4ef0d4d0 KS |
6801 | /* Get width and height of the image, and allocate a raster buffer |
6802 | of width x height 32-bit values. */ | |
6803 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6804 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6805 | |
6806 | if (!check_image_size (f, width, height)) | |
6807 | { | |
10ea2b82 | 6808 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6809 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6810 | return 0; |
6811 | } | |
6812 | ||
4ef0d4d0 KS |
6813 | buf = (uint32 *) xmalloc (width * height * sizeof *buf); |
6814 | ||
6815 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6816 | |
6817 | /* Count the number of images in the file. */ | |
03d0a109 PE |
6818 | for (count = 1; fn_TIFFSetDirectory (tiff, count); count++) |
6819 | continue; | |
58279503 JR |
6820 | |
6821 | if (count > 1) | |
6822 | img->data.lisp_val = Fcons (Qcount, | |
6823 | Fcons (make_number (count), | |
6824 | img->data.lisp_val)); | |
6825 | ||
4ef0d4d0 KS |
6826 | fn_TIFFClose (tiff); |
6827 | if (!rc) | |
6828 | { | |
6829 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6830 | xfree (buf); | |
4ef0d4d0 KS |
6831 | return 0; |
6832 | } | |
6833 | ||
6834 | /* Create the X image and pixmap. */ | |
6835 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6836 | { | |
6837 | xfree (buf); | |
4ef0d4d0 KS |
6838 | return 0; |
6839 | } | |
6840 | ||
6841 | /* Initialize the color table. */ | |
6842 | init_color_table (); | |
6843 | ||
6844 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6845 | for (y = 0; y < height; ++y) | |
6846 | { | |
6847 | uint32 *row = buf + y * width; | |
6848 | ||
6849 | for (x = 0; x < width; ++x) | |
6850 | { | |
6851 | uint32 abgr = row[x]; | |
6852 | int r = TIFFGetR (abgr) << 8; | |
6853 | int g = TIFFGetG (abgr) << 8; | |
6854 | int b = TIFFGetB (abgr) << 8; | |
6855 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6856 | } | |
6857 | } | |
6858 | ||
6859 | #ifdef COLOR_TABLE_SUPPORT | |
6860 | /* Remember the colors allocated for the image. Free the color table. */ | |
6861 | img->colors = colors_in_color_table (&img->ncolors); | |
6862 | free_color_table (); | |
6863 | #endif /* COLOR_TABLE_SUPPORT */ | |
6864 | ||
6865 | img->width = width; | |
6866 | img->height = height; | |
6867 | ||
6868 | /* Maybe fill in the background field while we have ximg handy. */ | |
6869 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6870 | /* Casting avoids a GCC warning on W32. */ |
6871 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6872 | |
6873 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6874 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6875 | x_destroy_x_image (ximg); | |
6876 | xfree (buf); | |
6877 | ||
4ef0d4d0 KS |
6878 | return 1; |
6879 | } | |
6880 | ||
6881 | #else /* HAVE_TIFF */ | |
6882 | ||
edfda783 AR |
6883 | #ifdef HAVE_NS |
6884 | static int | |
6885 | tiff_load (struct frame *f, struct image *img) | |
6886 | { | |
ed3751c8 JB |
6887 | return ns_load_image (f, img, |
6888 | image_spec_value (img->spec, QCfile, NULL), | |
6889 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6890 | } |
6891 | #endif /* HAVE_NS */ | |
6892 | ||
4ef0d4d0 KS |
6893 | #endif /* !HAVE_TIFF */ |
6894 | ||
6895 | ||
6896 | \f | |
6897 | /*********************************************************************** | |
6898 | GIF | |
6899 | ***********************************************************************/ | |
6900 | ||
9e2a2647 | 6901 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 6902 | |
f57e2426 J |
6903 | static int gif_image_p (Lisp_Object object); |
6904 | static int gif_load (struct frame *f, struct image *img); | |
6905 | static void gif_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6906 | |
6907 | /* The symbol `gif' identifying images of this type. */ | |
6908 | ||
955cbe7b | 6909 | static Lisp_Object Qgif; |
4ef0d4d0 KS |
6910 | |
6911 | /* Indices of image specification fields in gif_format, below. */ | |
6912 | ||
6913 | enum gif_keyword_index | |
6914 | { | |
6915 | GIF_TYPE, | |
6916 | GIF_DATA, | |
6917 | GIF_FILE, | |
6918 | GIF_ASCENT, | |
6919 | GIF_MARGIN, | |
6920 | GIF_RELIEF, | |
6921 | GIF_ALGORITHM, | |
6922 | GIF_HEURISTIC_MASK, | |
6923 | GIF_MASK, | |
6924 | GIF_IMAGE, | |
6925 | GIF_BACKGROUND, | |
6926 | GIF_LAST | |
6927 | }; | |
6928 | ||
6929 | /* Vector of image_keyword structures describing the format | |
6930 | of valid user-defined image specifications. */ | |
6931 | ||
91433552 | 6932 | static const struct image_keyword gif_format[GIF_LAST] = |
4ef0d4d0 KS |
6933 | { |
6934 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6935 | {":data", IMAGE_STRING_VALUE, 0}, | |
6936 | {":file", IMAGE_STRING_VALUE, 0}, | |
6937 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6938 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6939 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6940 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6941 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6942 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
58279503 | 6943 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, |
4ef0d4d0 KS |
6944 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} |
6945 | }; | |
6946 | ||
6947 | /* Structure describing the image type `gif'. */ | |
6948 | ||
6949 | static struct image_type gif_type = | |
6950 | { | |
6951 | &Qgif, | |
6952 | gif_image_p, | |
6953 | gif_load, | |
6ac3c7bb | 6954 | gif_clear_image, |
4ef0d4d0 KS |
6955 | NULL |
6956 | }; | |
6957 | ||
6ac3c7bb KS |
6958 | /* Free X resources of GIF image IMG which is used on frame F. */ |
6959 | ||
6960 | static void | |
d3da34e0 | 6961 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 6962 | { |
1546c559 | 6963 | /* IMG->data.ptr_val may contain metadata with extension data. */ |
6ac3c7bb KS |
6964 | img->data.lisp_val = Qnil; |
6965 | x_clear_image (f, img); | |
6966 | } | |
6967 | ||
4ef0d4d0 KS |
6968 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
6969 | ||
6970 | static int | |
d3da34e0 | 6971 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6972 | { |
6973 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 6974 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
6975 | |
6976 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
6977 | return 0; | |
6978 | ||
6979 | /* Must specify either the :data or :file keyword. */ | |
6980 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
6981 | } | |
6982 | ||
9e2a2647 | 6983 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
6984 | |
6985 | #ifdef HAVE_GIF | |
6986 | ||
9e2a2647 | 6987 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
6988 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
6989 | Undefine before redefining to avoid a preprocessor warning. */ | |
6990 | #ifdef DrawText | |
6991 | #undef DrawText | |
6992 | #endif | |
4ef0d4d0 KS |
6993 | /* avoid conflict with QuickdrawText.h */ |
6994 | #define DrawText gif_DrawText | |
6995 | #include <gif_lib.h> | |
6996 | #undef DrawText | |
6997 | ||
9e2a2647 | 6998 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
6999 | |
7000 | #include <gif_lib.h> | |
7001 | ||
9e2a2647 | 7002 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7003 | |
7004 | ||
7005 | #ifdef HAVE_NTGUI | |
7006 | ||
7007 | /* GIF library details. */ | |
14beddf4 CY |
7008 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7009 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7010 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7011 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 KS |
7012 | |
7013 | static int | |
0855eb52 | 7014 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7015 | { |
7016 | HMODULE library; | |
7017 | ||
0855eb52 | 7018 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7019 | return 0; |
7020 | ||
7021 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7022 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7023 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7024 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7025 | return 1; | |
7026 | } | |
7027 | ||
7028 | #else | |
7029 | ||
7030 | #define fn_DGifCloseFile DGifCloseFile | |
7031 | #define fn_DGifSlurp DGifSlurp | |
7032 | #define fn_DGifOpen DGifOpen | |
7033 | #define fn_DGifOpenFileName DGifOpenFileName | |
7034 | ||
7035 | #endif /* HAVE_NTGUI */ | |
7036 | ||
7037 | /* Reading a GIF image from memory | |
7038 | Based on the PNG memory stuff to a certain extent. */ | |
7039 | ||
7040 | typedef struct | |
7041 | { | |
7042 | unsigned char *bytes; | |
7043 | size_t len; | |
7044 | int index; | |
7045 | } | |
7046 | gif_memory_source; | |
7047 | ||
7048 | /* Make the current memory source available to gif_read_from_memory. | |
7049 | It's done this way because not all versions of libungif support | |
7050 | a UserData field in the GifFileType structure. */ | |
7051 | static gif_memory_source *current_gif_memory_src; | |
7052 | ||
7053 | static int | |
d3da34e0 | 7054 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7055 | { |
7056 | gif_memory_source *src = current_gif_memory_src; | |
7057 | ||
7058 | if (len > src->len - src->index) | |
7059 | return -1; | |
7060 | ||
72af86bd | 7061 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7062 | src->index += len; |
7063 | return len; | |
7064 | } | |
7065 | ||
7066 | ||
7067 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7068 | successful. */ | |
7069 | ||
91433552 DN |
7070 | static const int interlace_start[] = {0, 4, 2, 1}; |
7071 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7072 | |
17c0c952 JD |
7073 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7074 | ||
4ef0d4d0 | 7075 | static int |
d3da34e0 | 7076 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
7077 | { |
7078 | Lisp_Object file, specified_file; | |
7079 | Lisp_Object specified_data; | |
7080 | int rc, width, height, x, y, i; | |
f0c77cd1 | 7081 | boolean transparent_p = 0; |
4ef0d4d0 KS |
7082 | XImagePtr ximg; |
7083 | ColorMapObject *gif_color_map; | |
7084 | unsigned long pixel_colors[256]; | |
7085 | GifFileType *gif; | |
4ef0d4d0 | 7086 | Lisp_Object image; |
6ac3c7bb | 7087 | int ino, image_height, image_width; |
4ef0d4d0 KS |
7088 | gif_memory_source memsrc; |
7089 | unsigned char *raster; | |
f0c77cd1 | 7090 | unsigned int transparency_color_index IF_LINT (= 0); |
4ef0d4d0 KS |
7091 | |
7092 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7093 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
7094 | |
7095 | if (NILP (specified_data)) | |
7096 | { | |
7097 | file = x_find_image_file (specified_file); | |
7098 | if (!STRINGP (file)) | |
7099 | { | |
7100 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7101 | return 0; |
7102 | } | |
7103 | ||
df61c790 | 7104 | /* Open the GIF file. */ |
2037898d | 7105 | gif = fn_DGifOpenFileName (SSDATA (file)); |
4ef0d4d0 KS |
7106 | if (gif == NULL) |
7107 | { | |
7108 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7109 | return 0; |
7110 | } | |
7111 | } | |
7112 | else | |
7113 | { | |
7574650a AS |
7114 | if (!STRINGP (specified_data)) |
7115 | { | |
7116 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7117 | return 0; | |
7118 | } | |
7119 | ||
4ef0d4d0 KS |
7120 | /* Read from memory! */ |
7121 | current_gif_memory_src = &memsrc; | |
7122 | memsrc.bytes = SDATA (specified_data); | |
7123 | memsrc.len = SBYTES (specified_data); | |
7124 | memsrc.index = 0; | |
7125 | ||
df61c790 | 7126 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7127 | if (!gif) |
7128 | { | |
7129 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7130 | return 0; |
7131 | } | |
7132 | } | |
7133 | ||
f1f25b99 CY |
7134 | /* Before reading entire contents, check the declared image size. */ |
7135 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7136 | { | |
10ea2b82 | 7137 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7138 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7139 | return 0; |
7140 | } | |
7141 | ||
4ef0d4d0 KS |
7142 | /* Read entire contents. */ |
7143 | rc = fn_DGifSlurp (gif); | |
7144 | if (rc == GIF_ERROR) | |
7145 | { | |
7146 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7147 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7148 | return 0; |
7149 | } | |
7150 | ||
7151 | image = image_spec_value (img->spec, QCindex, NULL); | |
7152 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7153 | if (ino >= gif->ImageCount) | |
7154 | { | |
7155 | image_error ("Invalid image number `%s' in image `%s'", | |
7156 | image, img->spec); | |
7157 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7158 | return 0; |
7159 | } | |
7160 | ||
17c0c952 JD |
7161 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++) |
7162 | if ((gif->SavedImages[ino].ExtensionBlocks[i].Function | |
7163 | == GIF_LOCAL_DESCRIPTOR_EXTENSION) | |
7164 | && gif->SavedImages[ino].ExtensionBlocks[i].ByteCount == 4 | |
7165 | /* Transparency enabled? */ | |
7166 | && gif->SavedImages[ino].ExtensionBlocks[i].Bytes[0] & 1) | |
7167 | { | |
7168 | transparent_p = 1; | |
7169 | transparency_color_index | |
7170 | = (unsigned char) gif->SavedImages[ino].ExtensionBlocks[i].Bytes[3]; | |
7171 | } | |
7172 | ||
6ac3c7bb KS |
7173 | img->corners[TOP_CORNER] = gif->SavedImages[ino].ImageDesc.Top; |
7174 | img->corners[LEFT_CORNER] = gif->SavedImages[ino].ImageDesc.Left; | |
0f4aca46 | 7175 | image_height = gif->SavedImages[ino].ImageDesc.Height; |
6ac3c7bb KS |
7176 | img->corners[BOT_CORNER] = img->corners[TOP_CORNER] + image_height; |
7177 | image_width = gif->SavedImages[ino].ImageDesc.Width; | |
7178 | img->corners[RIGHT_CORNER] = img->corners[LEFT_CORNER] + image_width; | |
0f4aca46 KS |
7179 | |
7180 | width = img->width = max (gif->SWidth, | |
7181 | max (gif->Image.Left + gif->Image.Width, | |
6ac3c7bb | 7182 | img->corners[RIGHT_CORNER])); |
0f4aca46 KS |
7183 | height = img->height = max (gif->SHeight, |
7184 | max (gif->Image.Top + gif->Image.Height, | |
6ac3c7bb | 7185 | img->corners[BOT_CORNER])); |
4ef0d4d0 | 7186 | |
f1f25b99 CY |
7187 | if (!check_image_size (f, width, height)) |
7188 | { | |
10ea2b82 | 7189 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7190 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7191 | return 0; |
7192 | } | |
7193 | ||
4ef0d4d0 KS |
7194 | /* Create the X image and pixmap. */ |
7195 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7196 | { | |
7197 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7198 | return 0; |
7199 | } | |
7200 | ||
7201 | /* Allocate colors. */ | |
7202 | gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap; | |
7203 | if (!gif_color_map) | |
7204 | gif_color_map = gif->SColorMap; | |
7205 | init_color_table (); | |
72af86bd | 7206 | memset (pixel_colors, 0, sizeof pixel_colors); |
4ef0d4d0 | 7207 | |
1ab2cd43 TTN |
7208 | if (gif_color_map) |
7209 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
7210 | { | |
17c0c952 JD |
7211 | if (transparent_p && transparency_color_index == i) |
7212 | { | |
7213 | Lisp_Object specified_bg | |
7214 | = image_spec_value (img->spec, QCbackground, NULL); | |
7215 | pixel_colors[i] = STRINGP (specified_bg) | |
7216 | ? x_alloc_image_color (f, img, specified_bg, | |
7217 | FRAME_BACKGROUND_PIXEL (f)) | |
7218 | : FRAME_BACKGROUND_PIXEL (f); | |
7219 | } | |
7220 | else | |
7221 | { | |
7222 | int r = gif_color_map->Colors[i].Red << 8; | |
7223 | int g = gif_color_map->Colors[i].Green << 8; | |
7224 | int b = gif_color_map->Colors[i].Blue << 8; | |
7225 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7226 | } | |
1ab2cd43 | 7227 | } |
4ef0d4d0 KS |
7228 | |
7229 | #ifdef COLOR_TABLE_SUPPORT | |
7230 | img->colors = colors_in_color_table (&img->ncolors); | |
7231 | free_color_table (); | |
7232 | #endif /* COLOR_TABLE_SUPPORT */ | |
7233 | ||
7234 | /* Clear the part of the screen image that are not covered by | |
7235 | the image from the GIF file. Full animated GIF support | |
7236 | requires more than can be done here (see the gif89 spec, | |
7237 | disposal methods). Let's simply assume that the part | |
7238 | not covered by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7239 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7240 | for (x = 0; x < width; ++x) |
7241 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7242 | ||
6ac3c7bb | 7243 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7244 | for (x = 0; x < width; ++x) |
7245 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7246 | ||
6ac3c7bb | 7247 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7248 | { |
6ac3c7bb | 7249 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7250 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7251 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7252 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7253 | } | |
7254 | ||
7255 | /* Read the GIF image into the X image. We use a local variable | |
7256 | `raster' here because RasterBits below is a char *, and invites | |
7257 | problems with bytes >= 0x80. */ | |
7258 | raster = (unsigned char *) gif->SavedImages[ino].RasterBits; | |
7259 | ||
7260 | if (gif->SavedImages[ino].ImageDesc.Interlace) | |
7261 | { | |
4ef0d4d0 KS |
7262 | int pass; |
7263 | int row = interlace_start[0]; | |
7264 | ||
7265 | pass = 0; | |
7266 | ||
7267 | for (y = 0; y < image_height; y++) | |
7268 | { | |
7269 | if (row >= image_height) | |
7270 | { | |
7271 | row = interlace_start[++pass]; | |
7272 | while (row >= image_height) | |
7273 | row = interlace_start[++pass]; | |
7274 | } | |
7275 | ||
7276 | for (x = 0; x < image_width; x++) | |
7277 | { | |
6ae141d6 | 7278 | int c = raster[(y * image_width) + x]; |
6ac3c7bb | 7279 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
6ae141d6 | 7280 | row + img->corners[TOP_CORNER], pixel_colors[c]); |
4ef0d4d0 KS |
7281 | } |
7282 | ||
7283 | row += interlace_increment[pass]; | |
7284 | } | |
7285 | } | |
7286 | else | |
7287 | { | |
7288 | for (y = 0; y < image_height; ++y) | |
7289 | for (x = 0; x < image_width; ++x) | |
7290 | { | |
6ae141d6 | 7291 | int c = raster[y * image_width + x]; |
6ac3c7bb | 7292 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
6ae141d6 | 7293 | y + img->corners[TOP_CORNER], pixel_colors[c]); |
4ef0d4d0 KS |
7294 | } |
7295 | } | |
7296 | ||
1546c559 JL |
7297 | /* Save GIF image extension data for `image-metadata'. |
7298 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
6ac3c7bb KS |
7299 | img->data.lisp_val = Qnil; |
7300 | if (gif->SavedImages[ino].ExtensionBlockCount > 0) | |
7301 | { | |
7302 | ExtensionBlock *ext = gif->SavedImages[ino].ExtensionBlocks; | |
7303 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++, ext++) | |
7304 | /* Append (... FUNCTION "BYTES") */ | |
7305 | img->data.lisp_val = Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7306 | Fcons (make_number (ext->Function), | |
7307 | img->data.lisp_val)); | |
1546c559 JL |
7308 | img->data.lisp_val = Fcons (Qextension_data, |
7309 | Fcons (Fnreverse (img->data.lisp_val), | |
7310 | Qnil)); | |
6ac3c7bb KS |
7311 | } |
7312 | if (gif->ImageCount > 1) | |
7313 | img->data.lisp_val = Fcons (Qcount, | |
7314 | Fcons (make_number (gif->ImageCount), | |
7315 | img->data.lisp_val)); | |
7316 | ||
4ef0d4d0 KS |
7317 | fn_DGifCloseFile (gif); |
7318 | ||
7319 | /* Maybe fill in the background field while we have ximg handy. */ | |
7320 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7321 | /* Casting avoids a GCC warning. */ |
7322 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7323 | |
7324 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7325 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7326 | x_destroy_x_image (ximg); | |
7327 | ||
4ef0d4d0 KS |
7328 | return 1; |
7329 | } | |
7330 | ||
2e09fef1 | 7331 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7332 | |
edfda783 AR |
7333 | #ifdef HAVE_NS |
7334 | static int | |
7335 | gif_load (struct frame *f, struct image *img) | |
7336 | { | |
ed3751c8 JB |
7337 | return ns_load_image (f, img, |
7338 | image_spec_value (img->spec, QCfile, NULL), | |
7339 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7340 | } |
7341 | #endif /* HAVE_NS */ | |
7342 | ||
4ef0d4d0 KS |
7343 | #endif /* HAVE_GIF */ |
7344 | ||
7345 | ||
3de25479 | 7346 | /*********************************************************************** |
a32d4040 | 7347 | ImageMagick |
4917006b | 7348 | ***********************************************************************/ |
3de25479 | 7349 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 | 7350 | |
3de25479 | 7351 | Lisp_Object Qimagemagick; |
a32d4040 | 7352 | |
d66c4c7c CY |
7353 | static int imagemagick_image_p (Lisp_Object); |
7354 | static int imagemagick_load (struct frame *, struct image *); | |
7355 | static void imagemagick_clear_image (struct frame *, struct image *); | |
7356 | ||
a32d4040 | 7357 | /* Indices of image specification fields in imagemagick_format. */ |
3de25479 JV |
7358 | |
7359 | enum imagemagick_keyword_index | |
4917006b JV |
7360 | { |
7361 | IMAGEMAGICK_TYPE, | |
7362 | IMAGEMAGICK_DATA, | |
7363 | IMAGEMAGICK_FILE, | |
7364 | IMAGEMAGICK_ASCENT, | |
7365 | IMAGEMAGICK_MARGIN, | |
7366 | IMAGEMAGICK_RELIEF, | |
7367 | IMAGEMAGICK_ALGORITHM, | |
7368 | IMAGEMAGICK_HEURISTIC_MASK, | |
7369 | IMAGEMAGICK_MASK, | |
7370 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7371 | IMAGEMAGICK_HEIGHT, |
7372 | IMAGEMAGICK_WIDTH, | |
7373 | IMAGEMAGICK_ROTATION, | |
7374 | IMAGEMAGICK_CROP, | |
4917006b JV |
7375 | IMAGEMAGICK_LAST |
7376 | }; | |
3de25479 JV |
7377 | |
7378 | /* Vector of image_keyword structures describing the format | |
7379 | of valid user-defined image specifications. */ | |
7380 | ||
7381 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7382 | { |
7383 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7384 | {":data", IMAGE_STRING_VALUE, 0}, | |
7385 | {":file", IMAGE_STRING_VALUE, 0}, | |
7386 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7387 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7388 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7389 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7390 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7391 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7392 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7393 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7394 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7395 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7396 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7397 | }; |
a32d4040 | 7398 | |
d66c4c7c CY |
7399 | /* Structure describing the image type for any image handled via |
7400 | ImageMagick. */ | |
7401 | ||
7402 | static struct image_type imagemagick_type = | |
7403 | { | |
7404 | &Qimagemagick, | |
7405 | imagemagick_image_p, | |
7406 | imagemagick_load, | |
7407 | imagemagick_clear_image, | |
7408 | NULL | |
7409 | }; | |
7410 | ||
3de25479 JV |
7411 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7412 | ||
7413 | static void | |
4917006b JV |
7414 | imagemagick_clear_image (struct frame *f, |
7415 | struct image *img) | |
3de25479 | 7416 | { |
3de25479 JV |
7417 | x_clear_image (f, img); |
7418 | } | |
7419 | ||
3de25479 JV |
7420 | /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do |
7421 | this by calling parse_image_spec and supplying the keywords that | |
7422 | identify the IMAGEMAGICK format. */ | |
7423 | ||
7424 | static int | |
4917006b | 7425 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7426 | { |
7427 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7428 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7429 | |
7430 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7431 | return 0; | |
7432 | ||
7433 | /* Must specify either the :data or :file keyword. */ | |
7434 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7435 | } | |
7436 | ||
7437 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
7438 | Therefore rename the function so it doesnt collide with ImageMagick. */ | |
7439 | #define DrawRectangle DrawRectangleGif | |
7440 | #include <wand/MagickWand.h> | |
7441 | ||
d66c4c7c CY |
7442 | /* Helper function for imagemagick_load, which does the actual loading |
7443 | given contents and size, apart from frame and image structures, | |
7444 | passed from imagemagick_load. Uses librimagemagick to do most of | |
7445 | the image processing. | |
3de25479 | 7446 | |
d66c4c7c CY |
7447 | F is a pointer to the Emacs frame; IMG to the image structure to |
7448 | prepare; CONTENTS is the string containing the IMAGEMAGICK data to | |
7449 | be parsed; SIZE is the number of bytes of data; and FILENAME is | |
7450 | either the file name or the image data. | |
3de25479 | 7451 | |
d66c4c7c | 7452 | Return non-zero if successful. */ |
3de25479 JV |
7453 | |
7454 | static int | |
d66c4c7c CY |
7455 | imagemagick_load_image (struct frame *f, struct image *img, |
7456 | unsigned char *contents, unsigned int size, | |
7457 | unsigned char *filename) | |
3de25479 | 7458 | { |
b7d187f8 AS |
7459 | unsigned long width; |
7460 | unsigned long height; | |
3de25479 | 7461 | |
d66c4c7c | 7462 | MagickBooleanType status; |
3de25479 JV |
7463 | |
7464 | XImagePtr ximg; | |
7465 | Lisp_Object specified_bg; | |
7466 | XColor background; | |
7467 | int x; | |
7468 | int y; | |
7469 | ||
7470 | MagickWand *image_wand; | |
7574650a | 7471 | MagickWand *ping_wand; |
3de25479 JV |
7472 | PixelIterator *iterator; |
7473 | PixelWand **pixels; | |
7474 | MagickPixelPacket pixel; | |
4917006b | 7475 | Lisp_Object image; |
7574650a | 7476 | Lisp_Object value; |
4917006b JV |
7477 | Lisp_Object crop, geometry; |
7478 | long ino; | |
7479 | int desired_width, desired_height; | |
7480 | double rotation; | |
7481 | int imagemagick_rendermethod; | |
7574650a | 7482 | int pixelwidth; |
f3700365 JV |
7483 | ImageInfo *image_info; |
7484 | ExceptionInfo *exception; | |
7485 | Image * im_image; | |
3de25479 | 7486 | |
7574650a | 7487 | |
a32d4040 CY |
7488 | /* Handle image index for image types who can contain more than one image. |
7489 | Interface :index is same as for GIF. First we "ping" the image to see how | |
7490 | many sub-images it contains. Pinging is faster than loading the image to | |
7491 | find out things about it. */ | |
f853f599 | 7492 | |
a32d4040 | 7493 | /* Initialize the imagemagick environment. */ |
f853f599 | 7494 | MagickWandGenesis (); |
3de25479 JV |
7495 | image = image_spec_value (img->spec, QCindex, NULL); |
7496 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a AS |
7497 | ping_wand = NewMagickWand (); |
7498 | MagickSetResolution (ping_wand, 2, 2); | |
f3700365 JV |
7499 | if (filename != NULL) |
7500 | { | |
7574650a | 7501 | status = MagickPingImage (ping_wand, filename); |
f3700365 JV |
7502 | } |
7503 | else | |
7504 | { | |
7574650a AS |
7505 | status = MagickPingImageBlob (ping_wand, contents, size); |
7506 | } | |
7507 | ||
7508 | if (ino >= MagickGetNumberImages (ping_wand)) | |
7509 | { | |
7510 | image_error ("Invalid image number `%s' in image `%s'", | |
7511 | image, img->spec); | |
7512 | DestroyMagickWand (ping_wand); | |
7513 | return 0; | |
f3700365 | 7514 | } |
431dab04 | 7515 | |
f3700365 | 7516 | if (MagickGetNumberImages(ping_wand) > 1) |
d2a2d277 JV |
7517 | img->data.lisp_val = |
7518 | Fcons (Qcount, | |
7574650a | 7519 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
d2a2d277 | 7520 | img->data.lisp_val)); |
f3700365 JV |
7521 | |
7522 | DestroyMagickWand (ping_wand); | |
f853f599 | 7523 | |
d66c4c7c CY |
7524 | /* Now we know how many images are inside the file. If it's not a |
7525 | bundle, the number is one. */ | |
f3700365 JV |
7526 | |
7527 | if (filename != NULL) | |
7528 | { | |
7574650a AS |
7529 | image_info = CloneImageInfo ((ImageInfo *) NULL); |
7530 | (void) strcpy (image_info->filename, filename); | |
7531 | image_info->number_scenes = 1; | |
7532 | image_info->scene = ino; | |
7533 | exception = AcquireExceptionInfo (); | |
f3700365 | 7534 | |
7574650a | 7535 | im_image = ReadImage (image_info, exception); |
466cbae9 | 7536 | DestroyExceptionInfo (exception); |
f3700365 | 7537 | |
466cbae9 AS |
7538 | if (im_image != NULL) |
7539 | { | |
7540 | image_wand = NewMagickWandFromImage (im_image); | |
f853f599 | 7541 | DestroyImage(im_image); |
466cbae9 AS |
7542 | status = MagickTrue; |
7543 | } | |
7544 | else | |
7545 | status = MagickFalse; | |
f3700365 | 7546 | } |
3de25479 | 7547 | else |
f3700365 | 7548 | { |
7574650a AS |
7549 | image_wand = NewMagickWand (); |
7550 | status = MagickReadImageBlob (image_wand, contents, size); | |
f3700365 | 7551 | } |
f853f599 | 7552 | |
f3700365 JV |
7553 | if (status == MagickFalse) goto imagemagick_error; |
7554 | ||
d2a2d277 | 7555 | /* If width and/or height is set in the display spec assume we want |
a32d4040 | 7556 | to scale to those values. If either h or w is unspecified, the |
f3700365 | 7557 | unspecified should be calculated from the specified to preserve |
549a73b9 | 7558 | aspect ratio. */ |
3de25479 | 7559 | |
3de25479 JV |
7560 | value = image_spec_value (img->spec, QCwidth, NULL); |
7561 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7562 | value = image_spec_value (img->spec, QCheight, NULL); | |
7563 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7564 | |
bdf6a35d JV |
7565 | height = MagickGetImageHeight (image_wand); |
7566 | width = MagickGetImageWidth (image_wand); | |
7567 | ||
a32d4040 CY |
7568 | if (desired_width != -1 && desired_height == -1) |
7569 | /* w known, calculate h. */ | |
7570 | desired_height = (double) desired_width / width * height; | |
7571 | if (desired_width == -1 && desired_height != -1) | |
7572 | /* h known, calculate w. */ | |
7573 | desired_width = (double) desired_height / height * width; | |
7574 | if (desired_width != -1 && desired_height != -1) | |
4917006b | 7575 | { |
7574650a AS |
7576 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7577 | if (status == MagickFalse) | |
7578 | { | |
7579 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
7580 | goto imagemagick_error; | |
7581 | } | |
3de25479 | 7582 | } |
3de25479 | 7583 | |
f3700365 | 7584 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7585 | efficient. */ |
7586 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7587 | ||
7588 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7589 | { | |
a32d4040 CY |
7590 | /* After some testing, it seems MagickCropImage is the fastest crop |
7591 | function in ImageMagick. This crop function seems to do less copying | |
7592 | than the alternatives, but it still reads the entire image into memory | |
7593 | before croping, which is aparently difficult to avoid when using | |
7594 | imagemagick. */ | |
7574650a AS |
7595 | int w, h, x, y; |
7596 | w = XFASTINT (XCAR (crop)); | |
7597 | crop = XCDR (crop); | |
7598 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7599 | { | |
7600 | h = XFASTINT (XCAR (crop)); | |
7601 | crop = XCDR (crop); | |
7602 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7603 | { | |
7604 | x = XFASTINT (XCAR (crop)); | |
7605 | crop = XCDR (crop); | |
7606 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7607 | { | |
7608 | y = XFASTINT (XCAR (crop)); | |
7609 | MagickCropImage (image_wand, w, h, x, y); | |
7610 | } | |
7611 | } | |
7612 | } | |
7613 | } | |
7614 | ||
d2a2d277 JV |
7615 | /* Furthermore :rotation. we need background color and angle for |
7616 | rotation. */ | |
3de25479 | 7617 | /* |
d2a2d277 JV |
7618 | TODO background handling for rotation specified_bg = |
7619 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7620 | (specified_bg). */ |
4917006b JV |
7621 | value = image_spec_value (img->spec, QCrotation, NULL); |
7622 | if (FLOATP (value)) | |
7623 | { | |
7574650a | 7624 | PixelWand* background = NewPixelWand (); |
3de25479 | 7625 | PixelSetColor (background, "#ffffff");/*TODO remove hardcode*/ |
7574650a | 7626 | |
3de25479 | 7627 | rotation = extract_float (value); |
7574650a | 7628 | |
4917006b | 7629 | status = MagickRotateImage (image_wand, background, rotation); |
3de25479 | 7630 | DestroyPixelWand (background); |
4917006b JV |
7631 | if (status == MagickFalse) |
7632 | { | |
7633 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
7634 | goto imagemagick_error; | |
7635 | } | |
3de25479 | 7636 | } |
7574650a | 7637 | |
d66c4c7c CY |
7638 | /* Finally we are done manipulating the image. Figure out the |
7639 | resulting width/height and transfer ownerwship to Emacs. */ | |
4917006b JV |
7640 | height = MagickGetImageHeight (image_wand); |
7641 | width = MagickGetImageWidth (image_wand); | |
7574650a | 7642 | |
3de25479 JV |
7643 | if (! check_image_size (f, width, height)) |
7644 | { | |
7645 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7646 | goto imagemagick_error; | |
7647 | } | |
7574650a | 7648 | |
3de25479 JV |
7649 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7650 | went ok. */ | |
3de25479 JV |
7651 | |
7652 | init_color_table (); | |
d2a2d277 JV |
7653 | imagemagick_rendermethod = (INTEGERP (Vimagemagick_render_type) |
7654 | ? XFASTINT (Vimagemagick_render_type) : 0); | |
4917006b JV |
7655 | if (imagemagick_rendermethod == 0) |
7656 | { | |
7657 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
d2a2d277 JV |
7658 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7659 | &ximg, &img->pixmap)) | |
4917006b | 7660 | { |
466cbae9 AS |
7661 | #ifdef COLOR_TABLE_SUPPORT |
7662 | free_color_table (); | |
7663 | #endif | |
4917006b JV |
7664 | image_error("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
7665 | goto imagemagick_error; | |
7666 | } | |
7574650a | 7667 | |
4917006b JV |
7668 | /* Copy imagegmagick image to x with primitive yet robust pixel |
7669 | pusher loop. This has been tested a lot with many different | |
549a73b9 | 7670 | images. */ |
7574650a | 7671 | |
4917006b JV |
7672 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7673 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7674 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7675 | { |
466cbae9 AS |
7676 | #ifdef COLOR_TABLE_SUPPORT |
7677 | free_color_table (); | |
7678 | #endif | |
7679 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7680 | image_error ("Imagemagick pixel iterator creation failed", |
7681 | Qnil, Qnil); | |
3de25479 | 7682 | goto imagemagick_error; |
4917006b JV |
7683 | } |
7684 | ||
7574650a | 7685 | for (y = 0; y < (long) MagickGetImageHeight (image_wand); y++) |
4917006b JV |
7686 | { |
7687 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7688 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7689 | break; |
7690 | for (x = 0; x < (long) width; x++) | |
7691 | { | |
7692 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7693 | XPutPixel (ximg, x, y, |
7694 | lookup_rgb_color (f, | |
7695 | pixel.red, | |
7696 | pixel.green, | |
7697 | pixel.blue)); | |
4917006b JV |
7698 | } |
7699 | } | |
7700 | DestroyPixelIterator (iterator); | |
3de25479 JV |
7701 | } |
7702 | ||
4917006b JV |
7703 | if (imagemagick_rendermethod == 1) |
7704 | { | |
3234a340 JV |
7705 | /* Magicexportimage is normaly faster than pixelpushing. This |
7706 | method is also well tested. Some aspects of this method are | |
7707 | ad-hoc and needs to be more researched. */ | |
4917006b JV |
7708 | int imagedepth = 24;/*MagickGetImageDepth(image_wand);*/ |
7709 | char* exportdepth = imagedepth <= 8 ? "I" : "BGRP";/*"RGBP";*/ | |
7710 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
d2a2d277 | 7711 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, |
7574650a AS |
7712 | &ximg, &img->pixmap)) |
7713 | { | |
466cbae9 AS |
7714 | #ifdef COLOR_TABLE_SUPPORT |
7715 | free_color_table (); | |
7716 | #endif | |
7574650a AS |
7717 | image_error("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
7718 | goto imagemagick_error; | |
7719 | } | |
7720 | ||
3de25479 | 7721 | |
4917006b JV |
7722 | /* Oddly, the below code doesnt seem to work:*/ |
7723 | /* switch(ximg->bitmap_unit){ */ | |
7724 | /* case 8: */ | |
7725 | /* pixelwidth=CharPixel; */ | |
7726 | /* break; */ | |
7727 | /* case 16: */ | |
7728 | /* pixelwidth=ShortPixel; */ | |
7729 | /* break; */ | |
7730 | /* case 32: */ | |
7731 | /* pixelwidth=LongPixel; */ | |
7732 | /* break; */ | |
7733 | /* } */ | |
7734 | /* | |
7735 | Here im just guessing the format of the bitmap. | |
7736 | happens to work fine for: | |
7737 | - bw djvu images | |
7738 | on rgb display. | |
7739 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
4917006b JV |
7740 | */ |
7741 | pixelwidth = CharPixel;/*??? TODO figure out*/ | |
7574650a AS |
7742 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7743 | MagickExportImagePixels (image_wand, | |
7744 | 0, 0, | |
7745 | width, height, | |
7746 | exportdepth, | |
7747 | pixelwidth, | |
7748 | /*&(img->pixmap));*/ | |
7749 | ximg->data); | |
431dab04 | 7750 | #else |
7574650a AS |
7751 | image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!", |
7752 | Qnil, Qnil); | |
7753 | #endif | |
4917006b | 7754 | } |
7574650a | 7755 | |
3ed42149 | 7756 | |
3de25479 JV |
7757 | #ifdef COLOR_TABLE_SUPPORT |
7758 | /* Remember colors allocated for this image. */ | |
7759 | img->colors = colors_in_color_table (&img->ncolors); | |
7760 | free_color_table (); | |
7761 | #endif /* COLOR_TABLE_SUPPORT */ | |
7762 | ||
7763 | ||
7764 | img->width = width; | |
7765 | img->height = height; | |
7766 | ||
3de25479 JV |
7767 | /* Put the image into the pixmap, then free the X image and its |
7768 | buffer. */ | |
7769 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7770 | x_destroy_x_image (ximg); |
7771 | ||
7772 | ||
f3700365 | 7773 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7774 | DestroyMagickWand (image_wand); |
03d32f1b | 7775 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7776 | MagickWandTerminus (); |
3de25479 JV |
7777 | |
7778 | return 1; | |
7779 | ||
7780 | imagemagick_error: | |
466cbae9 | 7781 | DestroyMagickWand (image_wand); |
f853f599 | 7782 | MagickWandTerminus (); |
3de25479 JV |
7783 | /* TODO more cleanup. */ |
7784 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7785 | return 0; |
7786 | } | |
7787 | ||
4917006b JV |
7788 | |
7789 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if | |
7790 | successful. this function will go into the imagemagick_type structure, and | |
7791 | the prototype thus needs to be compatible with that structure. */ | |
7792 | ||
7793 | static int | |
d66c4c7c | 7794 | imagemagick_load (struct frame *f, struct image *img) |
4917006b JV |
7795 | { |
7796 | int success_p = 0; | |
7797 | Lisp_Object file_name; | |
7798 | ||
7799 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
7800 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
7801 | if (STRINGP (file_name)) | |
7802 | { | |
7803 | Lisp_Object file; | |
4917006b JV |
7804 | |
7805 | file = x_find_image_file (file_name); | |
4917006b JV |
7806 | if (!STRINGP (file)) |
7807 | { | |
7808 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
7809 | return 0; |
7810 | } | |
7574650a | 7811 | success_p = imagemagick_load_image (f, img, 0, 0, SDATA (file)); |
4917006b JV |
7812 | } |
7813 | /* Else its not a file, its a lisp object. Load the image from a | |
7814 | lisp object rather than a file. */ | |
7815 | else | |
7816 | { | |
7817 | Lisp_Object data; | |
7818 | ||
7819 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
7820 | if (!STRINGP (data)) |
7821 | { | |
7822 | image_error ("Invalid image data `%s'", data, Qnil); | |
7823 | return 0; | |
7824 | } | |
d2a2d277 JV |
7825 | success_p = imagemagick_load_image (f, img, SDATA (data), |
7826 | SBYTES (data), NULL); | |
4917006b JV |
7827 | } |
7828 | ||
7829 | return success_p; | |
7830 | } | |
7831 | ||
a7ca3326 | 7832 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
d66c4c7c CY |
7833 | doc: /* Return a list of image types supported by ImageMagick. |
7834 | Each entry in this list is a symbol named after an ImageMagick format | |
7835 | tag. See the ImageMagick manual for a list of ImageMagick formats and | |
7836 | their descriptions (http://www.imagemagick.org/script/formats.php). | |
7837 | ||
7838 | Note that ImageMagick recognizes many file-types that Emacs does not | |
7839 | recognize as images, such as C. See `imagemagick-types-inhibit'. */) | |
a8101f66 | 7840 | (void) |
3de25479 JV |
7841 | { |
7842 | Lisp_Object typelist = Qnil; | |
d66c4c7c | 7843 | unsigned long numf = 0; |
3de25479 | 7844 | ExceptionInfo ex; |
7574650a | 7845 | char **imtypes = GetMagickList ("*", &numf, &ex); |
3de25479 JV |
7846 | int i; |
7847 | Lisp_Object Qimagemagicktype; | |
4917006b JV |
7848 | for (i = 0; i < numf; i++) |
7849 | { | |
7850 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
7851 | typelist = Fcons (Qimagemagicktype, typelist); |
7852 | } | |
7853 | return typelist; | |
3de25479 | 7854 | } |
7574650a | 7855 | |
3de25479 JV |
7856 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
7857 | ||
7858 | ||
4ef0d4d0 | 7859 | \f |
4ab27a43 GM |
7860 | /*********************************************************************** |
7861 | SVG | |
7862 | ***********************************************************************/ | |
7863 | ||
7864 | #if defined (HAVE_RSVG) | |
7865 | ||
7866 | /* Function prototypes. */ | |
7867 | ||
f57e2426 J |
7868 | static int svg_image_p (Lisp_Object object); |
7869 | static int svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 7870 | |
f57e2426 J |
7871 | static int svg_load_image (struct frame *, struct image *, |
7872 | unsigned char *, unsigned int); | |
4ab27a43 GM |
7873 | |
7874 | /* The symbol `svg' identifying images of this type. */ | |
7875 | ||
7876 | Lisp_Object Qsvg; | |
7877 | ||
7878 | /* Indices of image specification fields in svg_format, below. */ | |
7879 | ||
7880 | enum svg_keyword_index | |
7881 | { | |
7882 | SVG_TYPE, | |
7883 | SVG_DATA, | |
7884 | SVG_FILE, | |
7885 | SVG_ASCENT, | |
7886 | SVG_MARGIN, | |
7887 | SVG_RELIEF, | |
7888 | SVG_ALGORITHM, | |
7889 | SVG_HEURISTIC_MASK, | |
7890 | SVG_MASK, | |
7891 | SVG_BACKGROUND, | |
7892 | SVG_LAST | |
7893 | }; | |
7894 | ||
7895 | /* Vector of image_keyword structures describing the format | |
7896 | of valid user-defined image specifications. */ | |
7897 | ||
91433552 | 7898 | static const struct image_keyword svg_format[SVG_LAST] = |
4ab27a43 GM |
7899 | { |
7900 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7901 | {":data", IMAGE_STRING_VALUE, 0}, | |
7902 | {":file", IMAGE_STRING_VALUE, 0}, | |
7903 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7904 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7905 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7906 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7907 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7908 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7909 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7910 | }; | |
7911 | ||
7912 | /* Structure describing the image type `svg'. Its the same type of | |
7913 | structure defined for all image formats, handled by emacs image | |
7914 | functions. See struct image_type in dispextern.h. */ | |
7915 | ||
7916 | static struct image_type svg_type = | |
7917 | { | |
7918 | /* An identifier showing that this is an image structure for the SVG format. */ | |
7919 | &Qsvg, | |
7920 | /* Handle to a function that can be used to identify a SVG file. */ | |
7921 | svg_image_p, | |
7922 | /* Handle to function used to load a SVG file. */ | |
7923 | svg_load, | |
7924 | /* Handle to function to free sresources for SVG. */ | |
7925 | x_clear_image, | |
7926 | /* An internal field to link to the next image type in a list of | |
7927 | image types, will be filled in when registering the format. */ | |
c21e6151 | 7928 | NULL |
4ab27a43 GM |
7929 | }; |
7930 | ||
7931 | ||
7932 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
7933 | this by calling parse_image_spec and supplying the keywords that | |
7934 | identify the SVG format. */ | |
7935 | ||
7936 | static int | |
d3da34e0 | 7937 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
7938 | { |
7939 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 7940 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
7941 | |
7942 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
7943 | return 0; | |
7944 | ||
7945 | /* Must specify either the :data or :file keyword. */ | |
7946 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
7947 | } | |
7948 | ||
7949 | #include <librsvg/rsvg.h> | |
7950 | ||
5fc9fdeb JR |
7951 | #ifdef HAVE_NTGUI |
7952 | ||
7953 | /* SVG library functions. */ | |
df61c790 AS |
7954 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
7955 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
7956 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
7957 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
7958 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
7959 | DEF_IMGLIB_FN (void, rsvg_handle_free); | |
7960 | ||
7961 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
7962 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
7963 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
7964 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
7965 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
7966 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
7967 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
7968 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
7969 | ||
7970 | DEF_IMGLIB_FN (void, g_type_init); | |
7971 | DEF_IMGLIB_FN (void, g_object_unref); | |
7972 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 7973 | |
df23bf08 | 7974 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb JR |
7975 | |
7976 | static int | |
7977 | init_svg_functions (Lisp_Object libraries) | |
7978 | { | |
df23bf08 | 7979 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb JR |
7980 | |
7981 | if (!(glib = w32_delayed_load (libraries, Qglib)) | |
df23bf08 | 7982 | || !(gobject = w32_delayed_load (libraries, Qgobject)) |
5fc9fdeb JR |
7983 | || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf)) |
7984 | || !(library = w32_delayed_load (libraries, Qsvg))) | |
7985 | return 0; | |
7986 | ||
7987 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 7988 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
7989 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
7990 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
7991 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
7992 | LOAD_IMGLIB_FN (library, rsvg_handle_free); | |
7993 | ||
7994 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
7995 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
7996 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
7997 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
7998 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
7999 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8000 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8001 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8002 | ||
df23bf08 JR |
8003 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8004 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8005 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8006 | |
5fc9fdeb JR |
8007 | return 1; |
8008 | } | |
4ab27a43 | 8009 | |
5fc9fdeb JR |
8010 | #else |
8011 | /* The following aliases for library functions allow dynamic loading | |
8012 | to be used on some platforms. */ | |
4ab27a43 | 8013 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8014 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8015 | #define fn_rsvg_handle_write rsvg_handle_write |
8016 | #define fn_rsvg_handle_close rsvg_handle_close | |
8017 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
8018 | #define fn_rsvg_handle_free rsvg_handle_free | |
8019 | ||
5fc9fdeb JR |
8020 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8021 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8022 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8023 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8024 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8025 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8026 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8027 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8028 | ||
5fc9fdeb JR |
8029 | #define fn_g_type_init g_type_init |
8030 | #define fn_g_object_unref g_object_unref | |
8031 | #define fn_g_error_free g_error_free | |
8032 | #endif /* !HAVE_NTGUI */ | |
4ab27a43 GM |
8033 | |
8034 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8035 | successful. this function will go into the svg_type structure, and | |
8036 | the prototype thus needs to be compatible with that structure. */ | |
8037 | ||
8038 | static int | |
d3da34e0 | 8039 | svg_load (struct frame *f, struct image *img) |
4ab27a43 GM |
8040 | { |
8041 | int success_p = 0; | |
8042 | Lisp_Object file_name; | |
8043 | ||
8044 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8045 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8046 | if (STRINGP (file_name)) | |
8047 | { | |
8048 | Lisp_Object file; | |
8049 | unsigned char *contents; | |
8050 | int size; | |
4ab27a43 GM |
8051 | |
8052 | file = x_find_image_file (file_name); | |
4ab27a43 | 8053 | if (!STRINGP (file)) |
c21e6151 YM |
8054 | { |
8055 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8056 | return 0; |
8057 | } | |
8058 | ||
4ab27a43 GM |
8059 | /* Read the entire file into memory. */ |
8060 | contents = slurp_file (SDATA (file), &size); | |
8061 | if (contents == NULL) | |
c21e6151 YM |
8062 | { |
8063 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8064 | return 0; |
8065 | } | |
4ab27a43 | 8066 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8067 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8068 | xfree (contents); |
4ab27a43 GM |
8069 | } |
8070 | /* Else its not a file, its a lisp object. Load the image from a | |
8071 | lisp object rather than a file. */ | |
8072 | else | |
8073 | { | |
8074 | Lisp_Object data; | |
8075 | ||
8076 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8077 | if (!STRINGP (data)) |
8078 | { | |
8079 | image_error ("Invalid image data `%s'", data, Qnil); | |
8080 | return 0; | |
8081 | } | |
4ab27a43 GM |
8082 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8083 | } | |
8084 | ||
8085 | return success_p; | |
8086 | } | |
8087 | ||
bbe6f2aa JB |
8088 | /* svg_load_image is a helper function for svg_load, which does the |
8089 | actual loading given contents and size, apart from frame and image | |
8090 | structures, passed from svg_load. | |
4ab27a43 | 8091 | |
bbe6f2aa | 8092 | Uses librsvg to do most of the image processing. |
c21e6151 | 8093 | |
bbe6f2aa | 8094 | Returns non-zero when successful. */ |
4ab27a43 | 8095 | static int |
d3da34e0 JB |
8096 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8097 | struct image *img, /* Pointer to emacs image structure. */ | |
8098 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
8099 | unsigned int size) /* Size of data in bytes. */ | |
4ab27a43 GM |
8100 | { |
8101 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8102 | RsvgDimensionData dimension_data; |
4ab27a43 GM |
8103 | GError *error = NULL; |
8104 | GdkPixbuf *pixbuf; | |
8105 | int width; | |
8106 | int height; | |
8107 | const guint8 *pixels; | |
8108 | int rowstride; | |
8109 | XImagePtr ximg; | |
c21e6151 | 8110 | Lisp_Object specified_bg; |
4ab27a43 GM |
8111 | XColor background; |
8112 | int x; | |
8113 | int y; | |
8114 | ||
8115 | /* g_type_init is a glib function that must be called prior to using | |
8116 | gnome type library functions. */ | |
5fc9fdeb | 8117 | fn_g_type_init (); |
4ab27a43 | 8118 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8119 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8120 | |
8121 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
8122 | fn_rsvg_handle_write (rsvg_handle, contents, size, &error); | |
e025c9c2 | 8123 | if (error) goto rsvg_error; |
4ab27a43 GM |
8124 | |
8125 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8126 | for further writes. */ | |
8127 | fn_rsvg_handle_close (rsvg_handle, &error); | |
e025c9c2 CY |
8128 | if (error) goto rsvg_error; |
8129 | ||
8130 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8131 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8132 | { |
8133 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8134 | goto rsvg_error; | |
8135 | } | |
b2996e57 | 8136 | |
4ab27a43 GM |
8137 | /* We can now get a valid pixel buffer from the svg file, if all |
8138 | went ok. */ | |
df61c790 | 8139 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8140 | if (!pixbuf) goto rsvg_error; |
8141 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8142 | |
8143 | /* Extract some meta data from the svg handle. */ | |
8144 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8145 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8146 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8147 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8148 | ||
8149 | /* Validate the svg meta data. */ | |
8150 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8151 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8152 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8153 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8154 | ||
8155 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8156 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8157 | { | |
5fc9fdeb | 8158 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8159 | return 0; |
8160 | } | |
4ab27a43 GM |
8161 | |
8162 | init_color_table (); | |
8163 | ||
c21e6151 YM |
8164 | /* Handle alpha channel by combining the image with a background |
8165 | color. */ | |
8166 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 CY |
8167 | if (!STRINGP (specified_bg) |
8168 | || !x_defined_color (f, SDATA (specified_bg), &background, 0)) | |
c21e6151 | 8169 | { |
d7e008d0 | 8170 | #ifndef HAVE_NS |
c21e6151 YM |
8171 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8172 | x_query_color (f, &background); | |
d7e008d0 | 8173 | #else |
ed3751c8 | 8174 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8175 | #endif |
c21e6151 | 8176 | } |
4ab27a43 | 8177 | |
8d3c4e79 CY |
8178 | /* SVG pixmaps specify transparency in the last byte, so right |
8179 | shift 8 bits to get rid of it, since emacs doesn't support | |
8180 | transparency. */ | |
8181 | background.red >>= 8; | |
8182 | background.green >>= 8; | |
8183 | background.blue >>= 8; | |
8184 | ||
4ab27a43 GM |
8185 | /* This loop handles opacity values, since Emacs assumes |
8186 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8187 | calculating the resulting color, given the transparency of the |
8188 | pixel, and the image background color. */ | |
4ab27a43 GM |
8189 | for (y = 0; y < height; ++y) |
8190 | { | |
8191 | for (x = 0; x < width; ++x) | |
8192 | { | |
8193 | unsigned red; | |
8194 | unsigned green; | |
8195 | unsigned blue; | |
8196 | unsigned opacity; | |
8197 | ||
8198 | red = *pixels++; | |
8199 | green = *pixels++; | |
8200 | blue = *pixels++; | |
8201 | opacity = *pixels++; | |
8202 | ||
8203 | red = ((red * opacity) | |
8204 | + (background.red * ((1 << 8) - opacity))); | |
8205 | green = ((green * opacity) | |
8206 | + (background.green * ((1 << 8) - opacity))); | |
8207 | blue = ((blue * opacity) | |
8208 | + (background.blue * ((1 << 8) - opacity))); | |
8209 | ||
8210 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8211 | } | |
8212 | ||
8213 | pixels += rowstride - 4 * width; | |
8214 | } | |
8215 | ||
8216 | #ifdef COLOR_TABLE_SUPPORT | |
8217 | /* Remember colors allocated for this image. */ | |
8218 | img->colors = colors_in_color_table (&img->ncolors); | |
8219 | free_color_table (); | |
8220 | #endif /* COLOR_TABLE_SUPPORT */ | |
8221 | ||
5fc9fdeb | 8222 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8223 | |
c21e6151 YM |
8224 | img->width = width; |
8225 | img->height = height; | |
8226 | ||
8227 | /* Maybe fill in the background field while we have ximg handy. | |
8228 | Casting avoids a GCC warning. */ | |
8229 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8230 | ||
4ab27a43 GM |
8231 | /* Put the image into the pixmap, then free the X image and its |
8232 | buffer. */ | |
8233 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8234 | x_destroy_x_image (ximg); | |
8235 | ||
4ab27a43 GM |
8236 | return 1; |
8237 | ||
8238 | rsvg_error: | |
e025c9c2 | 8239 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8240 | /* FIXME: Use error->message so the user knows what is the actual |
8241 | problem with the image. */ | |
8242 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
5fc9fdeb | 8243 | fn_g_error_free (error); |
4ab27a43 GM |
8244 | return 0; |
8245 | } | |
8246 | ||
8247 | #endif /* defined (HAVE_RSVG) */ | |
8248 | ||
8249 | ||
8250 | ||
4ef0d4d0 KS |
8251 | \f |
8252 | /*********************************************************************** | |
8253 | Ghostscript | |
8254 | ***********************************************************************/ | |
8255 | ||
8256 | #ifdef HAVE_X_WINDOWS | |
8257 | #define HAVE_GHOSTSCRIPT 1 | |
8258 | #endif /* HAVE_X_WINDOWS */ | |
8259 | ||
4ef0d4d0 KS |
8260 | #ifdef HAVE_GHOSTSCRIPT |
8261 | ||
f57e2426 J |
8262 | static int gs_image_p (Lisp_Object object); |
8263 | static int gs_load (struct frame *f, struct image *img); | |
8264 | static void gs_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
8265 | |
8266 | /* Keyword symbols. */ | |
8267 | ||
955cbe7b | 8268 | static Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; |
4ef0d4d0 KS |
8269 | |
8270 | /* Indices of image specification fields in gs_format, below. */ | |
8271 | ||
8272 | enum gs_keyword_index | |
8273 | { | |
8274 | GS_TYPE, | |
8275 | GS_PT_WIDTH, | |
8276 | GS_PT_HEIGHT, | |
8277 | GS_FILE, | |
8278 | GS_LOADER, | |
8279 | GS_BOUNDING_BOX, | |
8280 | GS_ASCENT, | |
8281 | GS_MARGIN, | |
8282 | GS_RELIEF, | |
8283 | GS_ALGORITHM, | |
8284 | GS_HEURISTIC_MASK, | |
8285 | GS_MASK, | |
8286 | GS_BACKGROUND, | |
8287 | GS_LAST | |
8288 | }; | |
8289 | ||
8290 | /* Vector of image_keyword structures describing the format | |
8291 | of valid user-defined image specifications. */ | |
8292 | ||
91433552 | 8293 | static const struct image_keyword gs_format[GS_LAST] = |
4ef0d4d0 KS |
8294 | { |
8295 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8296 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8297 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8298 | {":file", IMAGE_STRING_VALUE, 1}, | |
8299 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8300 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8301 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8302 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8303 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8304 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8305 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8306 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8307 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8308 | }; | |
8309 | ||
8310 | /* Structure describing the image type `ghostscript'. */ | |
8311 | ||
8312 | static struct image_type gs_type = | |
8313 | { | |
8314 | &Qpostscript, | |
8315 | gs_image_p, | |
8316 | gs_load, | |
8317 | gs_clear_image, | |
8318 | NULL | |
8319 | }; | |
8320 | ||
8321 | ||
8322 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8323 | ||
8324 | static void | |
d3da34e0 | 8325 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
8326 | { |
8327 | /* IMG->data.ptr_val may contain a recorded colormap. */ | |
8328 | xfree (img->data.ptr_val); | |
8329 | x_clear_image (f, img); | |
8330 | } | |
8331 | ||
8332 | ||
8333 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8334 | specification. */ | |
8335 | ||
8336 | static int | |
d3da34e0 | 8337 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8338 | { |
8339 | struct image_keyword fmt[GS_LAST]; | |
8340 | Lisp_Object tem; | |
8341 | int i; | |
8342 | ||
72af86bd | 8343 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8344 | |
8345 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8346 | return 0; | |
8347 | ||
8348 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8349 | tem = fmt[GS_BOUNDING_BOX].value; | |
8350 | if (CONSP (tem)) | |
8351 | { | |
8352 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8353 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8354 | return 0; | |
8355 | if (!NILP (tem)) | |
8356 | return 0; | |
8357 | } | |
8358 | else if (VECTORP (tem)) | |
8359 | { | |
77b37c05 | 8360 | if (ASIZE (tem) != 4) |
4ef0d4d0 KS |
8361 | return 0; |
8362 | for (i = 0; i < 4; ++i) | |
8363 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8364 | return 0; | |
8365 | } | |
8366 | else | |
8367 | return 0; | |
8368 | ||
8369 | return 1; | |
8370 | } | |
8371 | ||
8372 | ||
8373 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8374 | if successful. */ | |
8375 | ||
8376 | static int | |
d3da34e0 | 8377 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
8378 | { |
8379 | char buffer[100]; | |
8380 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; | |
4ef0d4d0 KS |
8381 | Lisp_Object frame; |
8382 | double in_width, in_height; | |
8383 | Lisp_Object pixel_colors = Qnil; | |
8384 | ||
8385 | /* Compute pixel size of pixmap needed from the given size in the | |
8386 | image specification. Sizes in the specification are in pt. 1 pt | |
8387 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8388 | info. */ | |
8389 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8390 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
4ef0d4d0 KS |
8391 | img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx; |
8392 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); | |
7574650a | 8393 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
4ef0d4d0 KS |
8394 | img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy; |
8395 | ||
f1f25b99 CY |
8396 | if (!check_image_size (f, img->width, img->height)) |
8397 | { | |
10ea2b82 | 8398 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8399 | return 0; |
8400 | } | |
8401 | ||
4ef0d4d0 KS |
8402 | /* Create the pixmap. */ |
8403 | xassert (img->pixmap == NO_PIXMAP); | |
8404 | ||
8405 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8406 | BLOCK_INPUT; | |
8407 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8408 | img->width, img->height, | |
8409 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8410 | UNBLOCK_INPUT; | |
8411 | ||
8412 | if (!img->pixmap) | |
8413 | { | |
8414 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8415 | return 0; | |
8416 | } | |
8417 | ||
8418 | /* Call the loader to fill the pixmap. It returns a process object | |
8419 | if successful. We do not record_unwind_protect here because | |
8420 | other places in redisplay like calling window scroll functions | |
8421 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
4ef0d4d0 KS |
8422 | sprintf (buffer, "%lu %lu", |
8423 | (unsigned long) FRAME_X_WINDOW (f), | |
8424 | (unsigned long) img->pixmap); | |
8425 | window_and_pixmap_id = build_string (buffer); | |
8426 | ||
8427 | sprintf (buffer, "%lu %lu", | |
8428 | FRAME_FOREGROUND_PIXEL (f), | |
8429 | FRAME_BACKGROUND_PIXEL (f)); | |
8430 | pixel_colors = build_string (buffer); | |
8431 | ||
8432 | XSETFRAME (frame, f); | |
8433 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8434 | if (NILP (loader)) | |
8435 | loader = intern ("gs-load-image"); | |
8436 | ||
8437 | img->data.lisp_val = call6 (loader, frame, img->spec, | |
8438 | make_number (img->width), | |
8439 | make_number (img->height), | |
8440 | window_and_pixmap_id, | |
8441 | pixel_colors); | |
4ef0d4d0 KS |
8442 | return PROCESSP (img->data.lisp_val); |
8443 | } | |
8444 | ||
8445 | ||
8446 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8447 | frame F. Called from XTread_socket when receiving an event | |
8448 | telling Emacs that Ghostscript has finished drawing. */ | |
8449 | ||
8450 | void | |
d3da34e0 | 8451 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8452 | { |
354884c4 | 8453 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
8454 | int class, i; |
8455 | struct image *img; | |
8456 | ||
8457 | /* Find the image containing PIXMAP. */ | |
8458 | for (i = 0; i < c->used; ++i) | |
8459 | if (c->images[i]->pixmap == pixmap) | |
8460 | break; | |
8461 | ||
8462 | /* Should someone in between have cleared the image cache, for | |
8463 | instance, give up. */ | |
8464 | if (i == c->used) | |
8465 | return; | |
8466 | ||
8467 | /* Kill the GS process. We should have found PIXMAP in the image | |
8468 | cache and its image should contain a process object. */ | |
8469 | img = c->images[i]; | |
8470 | xassert (PROCESSP (img->data.lisp_val)); | |
8471 | Fkill_process (img->data.lisp_val, Qnil); | |
8472 | img->data.lisp_val = Qnil; | |
8473 | ||
8474 | #if defined (HAVE_X_WINDOWS) | |
8475 | ||
8476 | /* On displays with a mutable colormap, figure out the colors | |
8477 | allocated for the image by looking at the pixels of an XImage for | |
8478 | img->pixmap. */ | |
8479 | class = FRAME_X_VISUAL (f)->class; | |
8480 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8481 | { | |
8482 | XImagePtr ximg; | |
8483 | ||
8484 | BLOCK_INPUT; | |
8485 | ||
8486 | /* Try to get an XImage for img->pixmep. */ | |
8487 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8488 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8489 | if (ximg) | |
8490 | { | |
8491 | int x, y; | |
8492 | ||
8493 | /* Initialize the color table. */ | |
8494 | init_color_table (); | |
8495 | ||
8496 | /* For each pixel of the image, look its color up in the | |
8497 | color table. After having done so, the color table will | |
8498 | contain an entry for each color used by the image. */ | |
8499 | for (y = 0; y < img->height; ++y) | |
8500 | for (x = 0; x < img->width; ++x) | |
8501 | { | |
8502 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8503 | lookup_pixel_color (f, pixel); | |
8504 | } | |
8505 | ||
8506 | /* Record colors in the image. Free color table and XImage. */ | |
8507 | #ifdef COLOR_TABLE_SUPPORT | |
8508 | img->colors = colors_in_color_table (&img->ncolors); | |
8509 | free_color_table (); | |
8510 | #endif | |
8511 | XDestroyImage (ximg); | |
8512 | ||
8513 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8514 | here, we get a BadAccess later in x_clear_image when | |
8515 | freeing the colors. */ | |
8516 | /* We have allocated colors once, but Ghostscript has also | |
8517 | allocated colors on behalf of us. So, to get the | |
8518 | reference counts right, free them once. */ | |
8519 | if (img->ncolors) | |
8520 | x_free_colors (f, img->colors, img->ncolors); | |
8521 | #endif | |
8522 | } | |
8523 | else | |
8524 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8525 | img->spec, Qnil); | |
8526 | ||
8527 | UNBLOCK_INPUT; | |
8528 | } | |
8529 | #endif /* HAVE_X_WINDOWS */ | |
8530 | ||
8531 | /* Now that we have the pixmap, compute mask and transform the | |
8532 | image if requested. */ | |
8533 | BLOCK_INPUT; | |
8534 | postprocess_image (f, img); | |
8535 | UNBLOCK_INPUT; | |
8536 | } | |
8537 | ||
8538 | #endif /* HAVE_GHOSTSCRIPT */ | |
8539 | ||
8540 | \f | |
8541 | /*********************************************************************** | |
8542 | Tests | |
8543 | ***********************************************************************/ | |
8544 | ||
8545 | #if GLYPH_DEBUG | |
8546 | ||
a7ca3326 | 8547 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, |
4ef0d4d0 | 8548 | doc: /* Value is non-nil if SPEC is a valid image specification. */) |
5842a27b | 8549 | (Lisp_Object spec) |
4ef0d4d0 KS |
8550 | { |
8551 | return valid_image_p (spec) ? Qt : Qnil; | |
8552 | } | |
8553 | ||
8554 | ||
a7ca3326 | 8555 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") |
5842a27b | 8556 | (Lisp_Object spec) |
4ef0d4d0 KS |
8557 | { |
8558 | int id = -1; | |
8559 | ||
8560 | if (valid_image_p (spec)) | |
8561 | id = lookup_image (SELECTED_FRAME (), spec); | |
8562 | ||
8563 | debug_print (spec); | |
8564 | return make_number (id); | |
8565 | } | |
8566 | ||
8567 | #endif /* GLYPH_DEBUG != 0 */ | |
8568 | ||
8569 | ||
8570 | /*********************************************************************** | |
8571 | Initialization | |
8572 | ***********************************************************************/ | |
8573 | ||
0855eb52 JB |
8574 | #ifdef HAVE_NTGUI |
8575 | /* Image types that rely on external libraries are loaded dynamically | |
8576 | if the library is available. */ | |
adac86db | 8577 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8578 | define_image_type (image_type, init_lib_fn (libraries)) |
8579 | #else | |
adac86db | 8580 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8581 | define_image_type (image_type, 1) |
0855eb52 JB |
8582 | #endif /* HAVE_NTGUI */ |
8583 | ||
8584 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8585 | doc: /* Initialize image library implementing image type TYPE. | |
8586 | Return non-nil if TYPE is a supported image type. | |
8587 | ||
8588 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8589 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
2e288d54 | 8590 | of `dynamic-library-alist', which see). */) |
5842a27b | 8591 | (Lisp_Object type, Lisp_Object libraries) |
0855eb52 | 8592 | { |
84d358f0 | 8593 | #ifdef HAVE_NTGUI |
0855eb52 | 8594 | /* Don't try to reload the library. */ |
4c4b566b | 8595 | Lisp_Object tested = Fassq (type, Vlibrary_cache); |
0855eb52 JB |
8596 | if (CONSP (tested)) |
8597 | return XCDR (tested); | |
84d358f0 | 8598 | #endif |
0855eb52 | 8599 | |
2f142cc5 JB |
8600 | /* Types pbm and xbm are built-in and always available. */ |
8601 | if (EQ (type, Qpbm) || EQ (type, Qxbm)) | |
8602 | return Qt; | |
8603 | ||
9e2a2647 | 8604 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8605 | if (EQ (type, Qxpm)) |
adac86db | 8606 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8607 | #endif |
8608 | ||
9e2a2647 | 8609 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8610 | if (EQ (type, Qjpeg)) |
adac86db | 8611 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8612 | #endif |
8613 | ||
9e2a2647 | 8614 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8615 | if (EQ (type, Qtiff)) |
adac86db | 8616 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8617 | #endif |
8618 | ||
9e2a2647 | 8619 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8620 | if (EQ (type, Qgif)) |
adac86db | 8621 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8622 | #endif |
8623 | ||
9e2a2647 | 8624 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8625 | if (EQ (type, Qpng)) |
adac86db | 8626 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8627 | #endif |
8628 | ||
4ab27a43 GM |
8629 | #if defined (HAVE_RSVG) |
8630 | if (EQ (type, Qsvg)) | |
8631 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
8632 | #endif | |
c21e6151 | 8633 | |
3de25479 | 8634 | #if defined (HAVE_IMAGEMAGICK) |
7574650a | 8635 | if (EQ (type, Qimagemagick)) |
2f142cc5 JB |
8636 | return CHECK_LIB_AVAILABLE (&imagemagick_type, init_imagemagick_functions, |
8637 | libraries); | |
3de25479 JV |
8638 | #endif |
8639 | ||
0855eb52 JB |
8640 | #ifdef HAVE_GHOSTSCRIPT |
8641 | if (EQ (type, Qpostscript)) | |
adac86db | 8642 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8643 | #endif |
8644 | ||
8645 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8646 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8647 | return Qnil; |
8648 | } | |
8649 | ||
4ef0d4d0 | 8650 | void |
d3da34e0 | 8651 | syms_of_image (void) |
4ef0d4d0 | 8652 | { |
6e6fc3fd RS |
8653 | /* Initialize this only once, since that's what we do with Vimage_types |
8654 | and they are supposed to be in sync. Initializing here gives correct | |
8655 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8656 | image_types = NULL; | |
8657 | ||
0855eb52 JB |
8658 | /* Must be defined now becase we're going to update it below, while |
8659 | defining the supported image types. */ | |
29208e82 | 8660 | DEFVAR_LISP ("image-types", Vimage_types, |
0855eb52 | 8661 | doc: /* List of potentially supported image types. |
bbe6f2aa | 8662 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. |
0855eb52 JB |
8663 | To check whether it is really supported, use `image-type-available-p'. */); |
8664 | Vimage_types = Qnil; | |
8665 | ||
29208e82 | 8666 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
7df4765a KS |
8667 | doc: /* Maximum size of images. |
8668 | Emacs will not load an image into memory if its pixel width or | |
8669 | pixel height exceeds this limit. | |
8670 | ||
8671 | If the value is an integer, it directly specifies the maximum | |
8672 | image height and width, measured in pixels. If it is a floating | |
8673 | point number, it specifies the maximum image height and width | |
8674 | as a ratio to the frame height and width. If the value is | |
8675 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8676 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8677 | ||
d67b4f80 | 8678 | Qpbm = intern_c_string ("pbm"); |
7c4e3a32 | 8679 | staticpro (&Qpbm); |
5fc9fdeb | 8680 | ADD_IMAGE_TYPE (Qpbm); |
7c4e3a32 | 8681 | |
d67b4f80 | 8682 | Qxbm = intern_c_string ("xbm"); |
7c4e3a32 | 8683 | staticpro (&Qxbm); |
5fc9fdeb | 8684 | ADD_IMAGE_TYPE (Qxbm); |
7c4e3a32 RS |
8685 | |
8686 | define_image_type (&xbm_type, 1); | |
8687 | define_image_type (&pbm_type, 1); | |
8688 | ||
d67b4f80 | 8689 | Qcount = intern_c_string ("count"); |
e047f448 | 8690 | staticpro (&Qcount); |
1546c559 JL |
8691 | Qextension_data = intern_c_string ("extension-data"); |
8692 | staticpro (&Qextension_data); | |
e047f448 | 8693 | |
d67b4f80 | 8694 | QCascent = intern_c_string (":ascent"); |
4ef0d4d0 | 8695 | staticpro (&QCascent); |
d67b4f80 | 8696 | QCmargin = intern_c_string (":margin"); |
4ef0d4d0 | 8697 | staticpro (&QCmargin); |
d67b4f80 | 8698 | QCrelief = intern_c_string (":relief"); |
4ef0d4d0 | 8699 | staticpro (&QCrelief); |
d67b4f80 | 8700 | QCconversion = intern_c_string (":conversion"); |
4ef0d4d0 | 8701 | staticpro (&QCconversion); |
d67b4f80 | 8702 | QCcolor_symbols = intern_c_string (":color-symbols"); |
4ef0d4d0 | 8703 | staticpro (&QCcolor_symbols); |
d67b4f80 | 8704 | QCheuristic_mask = intern_c_string (":heuristic-mask"); |
4ef0d4d0 | 8705 | staticpro (&QCheuristic_mask); |
d67b4f80 | 8706 | QCindex = intern_c_string (":index"); |
4ef0d4d0 | 8707 | staticpro (&QCindex); |
088dcc3e | 8708 | QCgeometry = intern_c_string (":geometry"); |
3de25479 | 8709 | staticpro (&QCgeometry); |
088dcc3e | 8710 | QCcrop = intern_c_string (":crop"); |
3de25479 | 8711 | staticpro (&QCcrop); |
088dcc3e | 8712 | QCrotation = intern_c_string (":rotation"); |
3de25479 | 8713 | staticpro (&QCrotation); |
d67b4f80 | 8714 | QCmatrix = intern_c_string (":matrix"); |
4ef0d4d0 | 8715 | staticpro (&QCmatrix); |
d67b4f80 | 8716 | QCcolor_adjustment = intern_c_string (":color-adjustment"); |
4ef0d4d0 | 8717 | staticpro (&QCcolor_adjustment); |
d67b4f80 | 8718 | QCmask = intern_c_string (":mask"); |
4ef0d4d0 KS |
8719 | staticpro (&QCmask); |
8720 | ||
d67b4f80 | 8721 | Qlaplace = intern_c_string ("laplace"); |
4ef0d4d0 | 8722 | staticpro (&Qlaplace); |
d67b4f80 | 8723 | Qemboss = intern_c_string ("emboss"); |
4ef0d4d0 | 8724 | staticpro (&Qemboss); |
d67b4f80 | 8725 | Qedge_detection = intern_c_string ("edge-detection"); |
4ef0d4d0 | 8726 | staticpro (&Qedge_detection); |
d67b4f80 | 8727 | Qheuristic = intern_c_string ("heuristic"); |
4ef0d4d0 | 8728 | staticpro (&Qheuristic); |
4ef0d4d0 | 8729 | |
d67b4f80 | 8730 | Qpostscript = intern_c_string ("postscript"); |
4ef0d4d0 KS |
8731 | staticpro (&Qpostscript); |
8732 | #ifdef HAVE_GHOSTSCRIPT | |
5fc9fdeb | 8733 | ADD_IMAGE_TYPE (Qpostscript); |
d67b4f80 | 8734 | QCloader = intern_c_string (":loader"); |
4ef0d4d0 | 8735 | staticpro (&QCloader); |
d67b4f80 | 8736 | QCbounding_box = intern_c_string (":bounding-box"); |
4ef0d4d0 | 8737 | staticpro (&QCbounding_box); |
d67b4f80 | 8738 | QCpt_width = intern_c_string (":pt-width"); |
4ef0d4d0 | 8739 | staticpro (&QCpt_width); |
d67b4f80 | 8740 | QCpt_height = intern_c_string (":pt-height"); |
4ef0d4d0 KS |
8741 | staticpro (&QCpt_height); |
8742 | #endif /* HAVE_GHOSTSCRIPT */ | |
8743 | ||
5be1c984 EZ |
8744 | #ifdef HAVE_NTGUI |
8745 | Qlibpng_version = intern_c_string ("libpng-version"); | |
8746 | staticpro (&Qlibpng_version); | |
0514b4be | 8747 | Fset (Qlibpng_version, |
5be1c984 | 8748 | #if HAVE_PNG |
0514b4be | 8749 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8750 | #else |
0514b4be | 8751 | make_number (-1) |
5be1c984 | 8752 | #endif |
0514b4be | 8753 | ); |
5be1c984 EZ |
8754 | #endif |
8755 | ||
9e2a2647 | 8756 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
d67b4f80 | 8757 | Qxpm = intern_c_string ("xpm"); |
4ef0d4d0 | 8758 | staticpro (&Qxpm); |
5fc9fdeb | 8759 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8760 | #endif |
8761 | ||
9e2a2647 | 8762 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
d67b4f80 | 8763 | Qjpeg = intern_c_string ("jpeg"); |
4ef0d4d0 | 8764 | staticpro (&Qjpeg); |
5fc9fdeb | 8765 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8766 | #endif |
8767 | ||
9e2a2647 | 8768 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
d67b4f80 | 8769 | Qtiff = intern_c_string ("tiff"); |
4ef0d4d0 | 8770 | staticpro (&Qtiff); |
5fc9fdeb | 8771 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8772 | #endif |
8773 | ||
9e2a2647 | 8774 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
d67b4f80 | 8775 | Qgif = intern_c_string ("gif"); |
4ef0d4d0 | 8776 | staticpro (&Qgif); |
5fc9fdeb | 8777 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8778 | #endif |
8779 | ||
9e2a2647 | 8780 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
d67b4f80 | 8781 | Qpng = intern_c_string ("png"); |
4ef0d4d0 | 8782 | staticpro (&Qpng); |
5fc9fdeb | 8783 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8784 | #endif |
8785 | ||
3de25479 | 8786 | #if defined (HAVE_IMAGEMAGICK) |
088dcc3e | 8787 | Qimagemagick = intern_c_string ("imagemagick"); |
3de25479 JV |
8788 | staticpro (&Qimagemagick); |
8789 | ADD_IMAGE_TYPE (Qimagemagick); | |
8790 | #endif | |
7574650a | 8791 | |
4ab27a43 | 8792 | #if defined (HAVE_RSVG) |
d67b4f80 | 8793 | Qsvg = intern_c_string ("svg"); |
4ab27a43 | 8794 | staticpro (&Qsvg); |
5fc9fdeb JR |
8795 | ADD_IMAGE_TYPE (Qsvg); |
8796 | #ifdef HAVE_NTGUI | |
df23bf08 | 8797 | /* Other libraries used directly by svg code. */ |
d67b4f80 | 8798 | Qgdk_pixbuf = intern_c_string ("gdk-pixbuf"); |
5fc9fdeb | 8799 | staticpro (&Qgdk_pixbuf); |
d67b4f80 | 8800 | Qglib = intern_c_string ("glib"); |
5fc9fdeb | 8801 | staticpro (&Qglib); |
d67b4f80 | 8802 | Qgobject = intern_c_string ("gobject"); |
df23bf08 | 8803 | staticpro (&Qgobject); |
5fc9fdeb JR |
8804 | #endif /* HAVE_NTGUI */ |
8805 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8806 | |
0855eb52 | 8807 | defsubr (&Sinit_image_library); |
7574650a | 8808 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8809 | defsubr (&Simagemagick_types); |
7574650a | 8810 | #endif |
4ef0d4d0 | 8811 | defsubr (&Sclear_image_cache); |
110683ad | 8812 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8813 | defsubr (&Simage_size); |
8814 | defsubr (&Simage_mask_p); | |
1546c559 | 8815 | defsubr (&Simage_metadata); |
4ef0d4d0 KS |
8816 | |
8817 | #if GLYPH_DEBUG | |
8818 | defsubr (&Simagep); | |
8819 | defsubr (&Slookup_image); | |
8820 | #endif | |
8821 | ||
29208e82 | 8822 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
4ef0d4d0 | 8823 | doc: /* Non-nil means always draw a cross over disabled images. |
3046a84b | 8824 | Disabled images are those having a `:conversion disabled' property. |
4ef0d4d0 KS |
8825 | A cross is always drawn on black & white displays. */); |
8826 | cross_disabled_images = 0; | |
8827 | ||
29208e82 | 8828 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
4ef0d4d0 KS |
8829 | doc: /* List of directories to search for window system bitmap files. */); |
8830 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); | |
8831 | ||
29208e82 | 8832 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
98fe5161 CY |
8833 | doc: /* Maximum time after which images are removed from the cache. |
8834 | When an image has not been displayed this many seconds, Emacs | |
8835 | automatically removes it from the image cache. If the cache contains | |
8836 | a large number of images, the actual eviction time may be shorter. | |
8837 | The value can also be nil, meaning the cache is never cleared. | |
8838 | ||
8839 | The function `clear-image-cache' disregards this variable. */); | |
8840 | Vimage_cache_eviction_delay = make_number (300); | |
7574650a | 8841 | #ifdef HAVE_IMAGEMAGICK |
29208e82 | 8842 | DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type, |
4917006b | 8843 | doc: /* Choose between ImageMagick render methods. */); |
7574650a | 8844 | #endif |
4ef0d4d0 | 8845 | |
4ef0d4d0 KS |
8846 | } |
8847 | ||
4ef0d4d0 | 8848 | void |
d3da34e0 | 8849 | init_image (void) |
4ef0d4d0 | 8850 | { |
4ef0d4d0 | 8851 | } |