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 | 3 | |
b0c396f7 | 4 | This file is part of GNU Emacs. |
4ef0d4d0 | 5 | |
b0c396f7 JV |
6 | GNU Emacs is free software: you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation, either version 3 of the License, or | |
9 | (at your option) any later version. | |
4ef0d4d0 | 10 | |
b0c396f7 JV |
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. | |
4ef0d4d0 | 15 | |
b0c396f7 JV |
16 | You should have received a copy of the GNU General Public License |
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 | |
70 | #include "w32term.h" | |
71 | ||
72 | /* W32_TODO : Color tables on W32. */ | |
73 | #undef COLOR_TABLE_SUPPORT | |
74 | ||
75 | typedef struct w32_bitmap_record Bitmap_Record; | |
4ef0d4d0 KS |
76 | #define GET_PIXEL(ximg, x, y) GetPixel(ximg, x, y) |
77 | #define NO_PIXMAP 0 | |
4ef0d4d0 KS |
78 | |
79 | #define RGB_PIXEL_COLOR COLORREF | |
80 | ||
9ecf6403 YM |
81 | #define PIX_MASK_RETAIN 0 |
82 | #define PIX_MASK_DRAW 1 | |
4ef0d4d0 KS |
83 | |
84 | #define FRAME_X_VISUAL(f) FRAME_X_DISPLAY_INFO (f)->visual | |
85 | #define x_defined_color w32_defined_color | |
86 | #define DefaultDepthOfScreen(screen) (one_w32_display_info.n_cbits) | |
8b7d0a16 JR |
87 | |
88 | /* Functions from w32term.c that depend on XColor (so can't go in w32term.h | |
89 | without modifying lots of files). */ | |
90 | extern void x_query_colors (struct frame *f, XColor *colors, int ncolors); | |
91 | extern void x_query_color (struct frame *f, XColor *color); | |
5be1c984 EZ |
92 | |
93 | /* Version of libpng that we were compiled with, or -1 if no PNG | |
94 | support was compiled in. This is tested by w32-win.el to correctly | |
95 | set up the alist used to search for PNG libraries. */ | |
96 | Lisp_Object Qlibpng_version; | |
4ef0d4d0 KS |
97 | #endif /* HAVE_NTGUI */ |
98 | ||
edfda783 AR |
99 | #ifdef HAVE_NS |
100 | #include "nsterm.h" | |
101 | #include <sys/types.h> | |
102 | #include <sys/stat.h> | |
103 | ||
104 | #undef COLOR_TABLE_SUPPORT | |
105 | ||
106 | typedef struct ns_bitmap_record Bitmap_Record; | |
107 | ||
108 | #define GET_PIXEL(ximg, x, y) XGetPixel(ximg, x, y) | |
109 | #define NO_PIXMAP 0 | |
110 | ||
111 | #define RGB_PIXEL_COLOR unsigned long | |
112 | #define ZPixmap 0 | |
113 | ||
114 | #define PIX_MASK_RETAIN 0 | |
115 | #define PIX_MASK_DRAW 1 | |
116 | ||
117 | #define FRAME_X_VISUAL FRAME_NS_DISPLAY_INFO(f)->visual | |
b0c396f7 | 118 | #define x_defined_color(f, name, color_def, alloc) \ |
edfda783 AR |
119 | ns_defined_color (f, name, color_def, alloc, 0) |
120 | #define FRAME_X_SCREEN(f) 0 | |
9e50ff0c | 121 | #define DefaultDepthOfScreen(screen) x_display_list->n_planes |
edfda783 AR |
122 | #endif /* HAVE_NS */ |
123 | ||
124 | ||
97ec208f DN |
125 | /* The symbol `postscript' identifying images of this type. */ |
126 | ||
127 | Lisp_Object Qpostscript; | |
4ef0d4d0 | 128 | |
f57e2426 J |
129 | static void x_disable_image (struct frame *, struct image *); |
130 | static void x_edge_detection (struct frame *, struct image *, Lisp_Object, | |
131 | Lisp_Object); | |
4ef0d4d0 | 132 | |
f57e2426 J |
133 | static void init_color_table (void); |
134 | static unsigned long lookup_rgb_color (struct frame *f, int r, int g, int b); | |
4ef0d4d0 | 135 | #ifdef COLOR_TABLE_SUPPORT |
f57e2426 J |
136 | static void free_color_table (void); |
137 | static unsigned long *colors_in_color_table (int *n); | |
138 | static unsigned long lookup_pixel_color (struct frame *f, unsigned long p); | |
4ef0d4d0 KS |
139 | #endif |
140 | ||
141 | /* Code to deal with bitmaps. Bitmaps are referenced by their bitmap | |
142 | id, which is just an int that this section returns. Bitmaps are | |
143 | reference counted so they can be shared among frames. | |
144 | ||
145 | Bitmap indices are guaranteed to be > 0, so a negative number can | |
146 | be used to indicate no bitmap. | |
147 | ||
148 | If you use x_create_bitmap_from_data, then you must keep track of | |
149 | the bitmaps yourself. That is, creating a bitmap from the same | |
150 | data more than once will not be caught. */ | |
151 | ||
edfda783 AR |
152 | #ifdef HAVE_NS |
153 | XImagePtr | |
154 | XGetImage (Display *display, Pixmap pixmap, int x, int y, | |
155 | unsigned int width, unsigned int height, | |
156 | unsigned long plane_mask, int format) | |
157 | { | |
6fb5f7da | 158 | /* TODO: not sure what this function is supposed to do.. */ |
ed3751c8 | 159 | ns_retain_object (pixmap); |
edfda783 AR |
160 | return pixmap; |
161 | } | |
162 | ||
163 | /* use with imgs created by ns_image_for_XPM */ | |
164 | unsigned long | |
165 | XGetPixel (XImagePtr ximage, int x, int y) | |
166 | { | |
ed3751c8 | 167 | return ns_get_pixel (ximage, x, y); |
edfda783 AR |
168 | } |
169 | ||
170 | /* use with imgs created by ns_image_for_XPM; alpha set to 1; | |
171 | pixel is assumed to be in form RGB */ | |
172 | void | |
173 | XPutPixel (XImagePtr ximage, int x, int y, unsigned long pixel) | |
174 | { | |
ed3751c8 | 175 | ns_put_pixel (ximage, x, y, pixel); |
edfda783 AR |
176 | } |
177 | #endif /* HAVE_NS */ | |
178 | ||
4ef0d4d0 KS |
179 | |
180 | /* Functions to access the contents of a bitmap, given an id. */ | |
181 | ||
182 | int | |
d3da34e0 | 183 | x_bitmap_height (FRAME_PTR f, int id) |
4ef0d4d0 KS |
184 | { |
185 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].height; | |
186 | } | |
187 | ||
188 | int | |
d3da34e0 | 189 | x_bitmap_width (FRAME_PTR f, int id) |
4ef0d4d0 KS |
190 | { |
191 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].width; | |
192 | } | |
193 | ||
194 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) | |
195 | int | |
d3da34e0 | 196 | x_bitmap_pixmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
197 | { |
198 | return (int) FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].pixmap; | |
199 | } | |
200 | #endif | |
201 | ||
202 | #ifdef HAVE_X_WINDOWS | |
203 | int | |
d3da34e0 | 204 | x_bitmap_mask (FRAME_PTR f, int id) |
4ef0d4d0 KS |
205 | { |
206 | return FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].mask; | |
207 | } | |
208 | #endif | |
209 | ||
210 | /* Allocate a new bitmap record. Returns index of new record. */ | |
211 | ||
212 | static int | |
d3da34e0 | 213 | x_allocate_bitmap_record (FRAME_PTR f) |
4ef0d4d0 KS |
214 | { |
215 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
216 | int i; | |
217 | ||
218 | if (dpyinfo->bitmaps == NULL) | |
219 | { | |
220 | dpyinfo->bitmaps_size = 10; | |
221 | dpyinfo->bitmaps | |
222 | = (Bitmap_Record *) xmalloc (dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
223 | dpyinfo->bitmaps_last = 1; | |
224 | return 1; | |
225 | } | |
226 | ||
227 | if (dpyinfo->bitmaps_last < dpyinfo->bitmaps_size) | |
228 | return ++dpyinfo->bitmaps_last; | |
229 | ||
230 | for (i = 0; i < dpyinfo->bitmaps_size; ++i) | |
231 | if (dpyinfo->bitmaps[i].refcount == 0) | |
232 | return i + 1; | |
233 | ||
234 | dpyinfo->bitmaps_size *= 2; | |
235 | dpyinfo->bitmaps | |
236 | = (Bitmap_Record *) xrealloc (dpyinfo->bitmaps, | |
237 | dpyinfo->bitmaps_size * sizeof (Bitmap_Record)); | |
238 | return ++dpyinfo->bitmaps_last; | |
239 | } | |
240 | ||
241 | /* Add one reference to the reference count of the bitmap with id ID. */ | |
242 | ||
243 | void | |
d3da34e0 | 244 | x_reference_bitmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
245 | { |
246 | ++FRAME_X_DISPLAY_INFO (f)->bitmaps[id - 1].refcount; | |
247 | } | |
248 | ||
249 | /* Create a bitmap for frame F from a HEIGHT x WIDTH array of bits at BITS. */ | |
250 | ||
251 | int | |
d3da34e0 | 252 | x_create_bitmap_from_data (struct frame *f, char *bits, unsigned int width, unsigned int height) |
4ef0d4d0 KS |
253 | { |
254 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
255 | int id; | |
256 | ||
257 | #ifdef HAVE_X_WINDOWS | |
258 | Pixmap bitmap; | |
259 | bitmap = XCreateBitmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
260 | bits, width, height); | |
261 | if (! bitmap) | |
262 | return -1; | |
263 | #endif /* HAVE_X_WINDOWS */ | |
264 | ||
265 | #ifdef HAVE_NTGUI | |
266 | Pixmap bitmap; | |
267 | bitmap = CreateBitmap (width, height, | |
268 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_planes, | |
269 | FRAME_X_DISPLAY_INFO (XFRAME (frame))->n_cbits, | |
270 | bits); | |
271 | if (! bitmap) | |
272 | return -1; | |
273 | #endif /* HAVE_NTGUI */ | |
274 | ||
edfda783 | 275 | #ifdef HAVE_NS |
ed3751c8 | 276 | void *bitmap = ns_image_from_XBM (bits, width, height); |
edfda783 | 277 | if (!bitmap) |
b0c396f7 | 278 | return -1; |
edfda783 AR |
279 | #endif |
280 | ||
4ef0d4d0 | 281 | id = x_allocate_bitmap_record (f); |
4ef0d4d0 | 282 | |
edfda783 AR |
283 | #ifdef HAVE_NS |
284 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
285 | dpyinfo->bitmaps[id - 1].depth = 1; | |
286 | #endif | |
287 | ||
4ef0d4d0 KS |
288 | dpyinfo->bitmaps[id - 1].file = NULL; |
289 | dpyinfo->bitmaps[id - 1].height = height; | |
290 | dpyinfo->bitmaps[id - 1].width = width; | |
291 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
292 | ||
293 | #ifdef HAVE_X_WINDOWS | |
294 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
295 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
296 | dpyinfo->bitmaps[id - 1].depth = 1; | |
297 | #endif /* HAVE_X_WINDOWS */ | |
298 | ||
299 | #ifdef HAVE_NTGUI | |
300 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
301 | dpyinfo->bitmaps[id - 1].hinst = NULL; | |
302 | dpyinfo->bitmaps[id - 1].depth = 1; | |
303 | #endif /* HAVE_NTGUI */ | |
304 | ||
305 | return id; | |
306 | } | |
307 | ||
308 | /* Create bitmap from file FILE for frame F. */ | |
309 | ||
310 | int | |
d3da34e0 | 311 | x_create_bitmap_from_file (struct frame *f, Lisp_Object file) |
4ef0d4d0 | 312 | { |
edfda783 AR |
313 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); |
314 | ||
4ef0d4d0 KS |
315 | #ifdef HAVE_NTGUI |
316 | return -1; /* W32_TODO : bitmap support */ | |
317 | #endif /* HAVE_NTGUI */ | |
318 | ||
edfda783 AR |
319 | #ifdef HAVE_NS |
320 | int id; | |
ed3751c8 | 321 | void *bitmap = ns_image_from_file (file); |
edfda783 AR |
322 | |
323 | if (!bitmap) | |
b0c396f7 | 324 | return -1; |
edfda783 AR |
325 | |
326 | ||
327 | id = x_allocate_bitmap_record (f); | |
328 | dpyinfo->bitmaps[id - 1].img = bitmap; | |
329 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
330 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
331 | dpyinfo->bitmaps[id - 1].depth = 1; | |
ed3751c8 JB |
332 | dpyinfo->bitmaps[id - 1].height = ns_image_width (bitmap); |
333 | dpyinfo->bitmaps[id - 1].width = ns_image_height (bitmap); | |
edfda783 AR |
334 | strcpy (dpyinfo->bitmaps[id - 1].file, SDATA (file)); |
335 | return id; | |
336 | #endif | |
337 | ||
4ef0d4d0 | 338 | #ifdef HAVE_X_WINDOWS |
4ef0d4d0 KS |
339 | unsigned int width, height; |
340 | Pixmap bitmap; | |
341 | int xhot, yhot, result, id; | |
342 | Lisp_Object found; | |
343 | int fd; | |
344 | char *filename; | |
345 | ||
346 | /* Look for an existing bitmap with the same name. */ | |
347 | for (id = 0; id < dpyinfo->bitmaps_last; ++id) | |
348 | { | |
349 | if (dpyinfo->bitmaps[id].refcount | |
350 | && dpyinfo->bitmaps[id].file | |
51b59d79 | 351 | && !strcmp (dpyinfo->bitmaps[id].file, SSDATA (file))) |
4ef0d4d0 KS |
352 | { |
353 | ++dpyinfo->bitmaps[id].refcount; | |
354 | return id + 1; | |
355 | } | |
356 | } | |
357 | ||
358 | /* Search bitmap-file-path for the file, if appropriate. */ | |
359 | fd = openp (Vx_bitmap_file_path, file, Qnil, &found, Qnil); | |
360 | if (fd < 0) | |
361 | return -1; | |
362 | emacs_close (fd); | |
363 | ||
51b59d79 | 364 | filename = SSDATA (found); |
4ef0d4d0 KS |
365 | |
366 | result = XReadBitmapFile (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
367 | filename, &width, &height, &bitmap, &xhot, &yhot); | |
368 | if (result != BitmapSuccess) | |
369 | return -1; | |
370 | ||
371 | id = x_allocate_bitmap_record (f); | |
372 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; | |
373 | dpyinfo->bitmaps[id - 1].have_mask = 0; | |
374 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
375 | dpyinfo->bitmaps[id - 1].file = (char *) xmalloc (SBYTES (file) + 1); | |
376 | dpyinfo->bitmaps[id - 1].depth = 1; | |
377 | dpyinfo->bitmaps[id - 1].height = height; | |
378 | dpyinfo->bitmaps[id - 1].width = width; | |
42a5b22f | 379 | strcpy (dpyinfo->bitmaps[id - 1].file, SSDATA (file)); |
4ef0d4d0 KS |
380 | |
381 | return id; | |
382 | #endif /* HAVE_X_WINDOWS */ | |
383 | } | |
384 | ||
385 | /* Free bitmap B. */ | |
386 | ||
387 | static void | |
d3da34e0 | 388 | free_bitmap_record (Display_Info *dpyinfo, Bitmap_Record *bm) |
4ef0d4d0 KS |
389 | { |
390 | #ifdef HAVE_X_WINDOWS | |
391 | XFreePixmap (dpyinfo->display, bm->pixmap); | |
392 | if (bm->have_mask) | |
393 | XFreePixmap (dpyinfo->display, bm->mask); | |
394 | #endif /* HAVE_X_WINDOWS */ | |
395 | ||
396 | #ifdef HAVE_NTGUI | |
397 | DeleteObject (bm->pixmap); | |
398 | #endif /* HAVE_NTGUI */ | |
399 | ||
edfda783 | 400 | #ifdef HAVE_NS |
ed3751c8 | 401 | ns_release_object (bm->img); |
edfda783 AR |
402 | #endif |
403 | ||
4ef0d4d0 KS |
404 | if (bm->file) |
405 | { | |
406 | xfree (bm->file); | |
407 | bm->file = NULL; | |
408 | } | |
409 | } | |
410 | ||
411 | /* Remove reference to bitmap with id number ID. */ | |
412 | ||
413 | void | |
d3da34e0 | 414 | x_destroy_bitmap (FRAME_PTR f, int id) |
4ef0d4d0 KS |
415 | { |
416 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
417 | ||
418 | if (id > 0) | |
419 | { | |
420 | Bitmap_Record *bm = &dpyinfo->bitmaps[id - 1]; | |
421 | ||
422 | if (--bm->refcount == 0) | |
423 | { | |
424 | BLOCK_INPUT; | |
65342ae3 | 425 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
426 | UNBLOCK_INPUT; |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | /* Free all the bitmaps for the display specified by DPYINFO. */ | |
432 | ||
433 | void | |
d3da34e0 | 434 | x_destroy_all_bitmaps (Display_Info *dpyinfo) |
4ef0d4d0 KS |
435 | { |
436 | int i; | |
437 | Bitmap_Record *bm = dpyinfo->bitmaps; | |
438 | ||
439 | for (i = 0; i < dpyinfo->bitmaps_last; i++, bm++) | |
440 | if (bm->refcount > 0) | |
65342ae3 | 441 | free_bitmap_record (dpyinfo, bm); |
4ef0d4d0 KS |
442 | |
443 | dpyinfo->bitmaps_last = 0; | |
444 | } | |
445 | ||
446 | ||
447 | #ifdef HAVE_X_WINDOWS | |
448 | ||
449 | /* Useful functions defined in the section | |
450 | `Image type independent image structures' below. */ | |
451 | ||
f57e2426 J |
452 | static unsigned long four_corners_best (XImagePtr ximg, |
453 | int *corners, | |
454 | unsigned long width, | |
455 | unsigned long height); | |
4ef0d4d0 | 456 | |
f57e2426 J |
457 | static int x_create_x_image_and_pixmap (struct frame *f, int width, int height, |
458 | int depth, XImagePtr *ximg, | |
459 | Pixmap *pixmap); | |
4ef0d4d0 | 460 | |
f57e2426 | 461 | static void x_destroy_x_image (XImagePtr ximg); |
4ef0d4d0 KS |
462 | |
463 | ||
464 | /* Create a mask of a bitmap. Note is this not a perfect mask. | |
465 | It's nicer with some borders in this context */ | |
466 | ||
467 | int | |
d3da34e0 | 468 | x_create_bitmap_mask (struct frame *f, int id) |
4ef0d4d0 KS |
469 | { |
470 | Pixmap pixmap, mask; | |
471 | XImagePtr ximg, mask_img; | |
472 | unsigned long width, height; | |
473 | int result; | |
474 | unsigned long bg; | |
475 | unsigned long x, y, xp, xm, yp, ym; | |
476 | GC gc; | |
477 | ||
478 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
479 | ||
480 | if (!(id > 0)) | |
481 | return -1; | |
482 | ||
483 | pixmap = x_bitmap_pixmap (f, id); | |
484 | width = x_bitmap_width (f, id); | |
485 | height = x_bitmap_height (f, id); | |
486 | ||
487 | BLOCK_INPUT; | |
488 | ximg = XGetImage (FRAME_X_DISPLAY (f), pixmap, 0, 0, width, height, | |
489 | ~0, ZPixmap); | |
490 | ||
491 | if (!ximg) | |
492 | { | |
493 | UNBLOCK_INPUT; | |
494 | return -1; | |
495 | } | |
496 | ||
497 | result = x_create_x_image_and_pixmap (f, width, height, 1, &mask_img, &mask); | |
498 | ||
499 | UNBLOCK_INPUT; | |
500 | if (!result) | |
501 | { | |
502 | XDestroyImage (ximg); | |
503 | return -1; | |
504 | } | |
505 | ||
6ac3c7bb | 506 | bg = four_corners_best (ximg, NULL, width, height); |
4ef0d4d0 KS |
507 | |
508 | for (y = 0; y < ximg->height; ++y) | |
509 | { | |
510 | for (x = 0; x < ximg->width; ++x) | |
511 | { | |
512 | xp = x != ximg->width - 1 ? x + 1 : 0; | |
513 | xm = x != 0 ? x - 1 : ximg->width - 1; | |
514 | yp = y != ximg->height - 1 ? y + 1 : 0; | |
515 | ym = y != 0 ? y - 1 : ximg->height - 1; | |
516 | if (XGetPixel (ximg, x, y) == bg | |
517 | && XGetPixel (ximg, x, yp) == bg | |
518 | && XGetPixel (ximg, x, ym) == bg | |
519 | && XGetPixel (ximg, xp, y) == bg | |
520 | && XGetPixel (ximg, xp, yp) == bg | |
521 | && XGetPixel (ximg, xp, ym) == bg | |
522 | && XGetPixel (ximg, xm, y) == bg | |
523 | && XGetPixel (ximg, xm, yp) == bg | |
524 | && XGetPixel (ximg, xm, ym) == bg) | |
525 | XPutPixel (mask_img, x, y, 0); | |
526 | else | |
527 | XPutPixel (mask_img, x, y, 1); | |
528 | } | |
529 | } | |
530 | ||
531 | xassert (interrupt_input_blocked); | |
532 | gc = XCreateGC (FRAME_X_DISPLAY (f), mask, 0, NULL); | |
533 | XPutImage (FRAME_X_DISPLAY (f), mask, gc, mask_img, 0, 0, 0, 0, | |
534 | width, height); | |
535 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
536 | ||
537 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
538 | dpyinfo->bitmaps[id - 1].mask = mask; | |
539 | ||
540 | XDestroyImage (ximg); | |
541 | x_destroy_x_image (mask_img); | |
542 | ||
543 | return 0; | |
544 | } | |
545 | ||
546 | #endif /* HAVE_X_WINDOWS */ | |
547 | ||
548 | ||
549 | /*********************************************************************** | |
550 | Image types | |
b0c396f7 | 551 | ***********************************************************************/ |
4ef0d4d0 | 552 | |
4ef0d4d0 KS |
553 | /* List of supported image types. Use define_image_type to add new |
554 | types. Use lookup_image_type to find a type for a given symbol. */ | |
555 | ||
556 | static struct image_type *image_types; | |
557 | ||
0855eb52 JB |
558 | /* Cache for delayed-loading image types. */ |
559 | ||
560 | static Lisp_Object Vimage_type_cache; | |
561 | ||
4ef0d4d0 KS |
562 | /* The symbol `xbm' which is used as the type symbol for XBM images. */ |
563 | ||
564 | Lisp_Object Qxbm; | |
565 | ||
566 | /* Keywords. */ | |
567 | ||
1546c559 | 568 | Lisp_Object QCascent, QCmargin, QCrelief, Qcount, Qextension_data; |
4ef0d4d0 | 569 | Lisp_Object QCconversion, QCcolor_symbols, QCheuristic_mask; |
3de25479 | 570 | Lisp_Object QCindex, QCmatrix, QCcolor_adjustment, QCmask, QCgeometry, QCcrop, QCrotation; |
4ef0d4d0 KS |
571 | |
572 | /* Other symbols. */ | |
573 | ||
574 | Lisp_Object Qlaplace, Qemboss, Qedge_detection, Qheuristic; | |
4ef0d4d0 | 575 | |
4ef0d4d0 KS |
576 | /* Function prototypes. */ |
577 | ||
f57e2426 J |
578 | static Lisp_Object define_image_type (struct image_type *type, int loaded); |
579 | static struct image_type *lookup_image_type (Lisp_Object symbol); | |
675e2c69 | 580 | static void image_error (const char *format, Lisp_Object, Lisp_Object); |
f57e2426 J |
581 | static void x_laplace (struct frame *, struct image *); |
582 | static void x_emboss (struct frame *, struct image *); | |
583 | static int x_build_heuristic_mask (struct frame *, struct image *, | |
584 | Lisp_Object); | |
4ef0d4d0 | 585 | |
b0c396f7 | 586 | #define CACHE_IMAGE_TYPE(type, status) \ |
0855eb52 JB |
587 | do { Vimage_type_cache = Fcons (Fcons (type, status), Vimage_type_cache); } while (0) |
588 | ||
b0c396f7 | 589 | #define ADD_IMAGE_TYPE(type) \ |
0855eb52 | 590 | do { Vimage_types = Fcons (type, Vimage_types); } while (0) |
4ef0d4d0 KS |
591 | |
592 | /* Define a new image type from TYPE. This adds a copy of TYPE to | |
0855eb52 | 593 | image_types and caches the loading status of TYPE. */ |
4ef0d4d0 | 594 | |
0855eb52 | 595 | static Lisp_Object |
d3da34e0 | 596 | define_image_type (struct image_type *type, int loaded) |
4ef0d4d0 | 597 | { |
0855eb52 JB |
598 | Lisp_Object success; |
599 | ||
600 | if (!loaded) | |
601 | success = Qnil; | |
602 | else | |
603 | { | |
604 | /* Make a copy of TYPE to avoid a bus error in a dumped Emacs. | |
605 | The initialized data segment is read-only. */ | |
606 | struct image_type *p = (struct image_type *) xmalloc (sizeof *p); | |
72af86bd | 607 | memcpy (p, type, sizeof *p); |
0855eb52 JB |
608 | p->next = image_types; |
609 | image_types = p; | |
610 | success = Qt; | |
611 | } | |
612 | ||
adac86db | 613 | CACHE_IMAGE_TYPE (*type->type, success); |
0855eb52 | 614 | return success; |
4ef0d4d0 KS |
615 | } |
616 | ||
617 | ||
618 | /* Look up image type SYMBOL, and return a pointer to its image_type | |
619 | structure. Value is null if SYMBOL is not a known image type. */ | |
620 | ||
621 | static INLINE struct image_type * | |
d3da34e0 | 622 | lookup_image_type (Lisp_Object symbol) |
4ef0d4d0 KS |
623 | { |
624 | struct image_type *type; | |
625 | ||
803aac3e | 626 | /* We must initialize the image-type if it hasn't been already. */ |
2e288d54 | 627 | if (NILP (Finit_image_library (symbol, Vdynamic_library_alist))) |
803aac3e MB |
628 | return 0; /* unimplemented */ |
629 | ||
4ef0d4d0 KS |
630 | for (type = image_types; type; type = type->next) |
631 | if (EQ (symbol, *type->type)) | |
632 | break; | |
633 | ||
634 | return type; | |
635 | } | |
636 | ||
637 | ||
638 | /* Value is non-zero if OBJECT is a valid Lisp image specification. A | |
639 | valid image specification is a list whose car is the symbol | |
640 | `image', and whose rest is a property list. The property list must | |
641 | contain a value for key `:type'. That value must be the name of a | |
642 | supported image type. The rest of the property list depends on the | |
643 | image type. */ | |
644 | ||
645 | int | |
d3da34e0 | 646 | valid_image_p (Lisp_Object object) |
4ef0d4d0 KS |
647 | { |
648 | int valid_p = 0; | |
649 | ||
650 | if (IMAGEP (object)) | |
651 | { | |
652 | Lisp_Object tem; | |
653 | ||
654 | for (tem = XCDR (object); CONSP (tem); tem = XCDR (tem)) | |
655 | if (EQ (XCAR (tem), QCtype)) | |
656 | { | |
657 | tem = XCDR (tem); | |
658 | if (CONSP (tem) && SYMBOLP (XCAR (tem))) | |
659 | { | |
660 | struct image_type *type; | |
661 | type = lookup_image_type (XCAR (tem)); | |
662 | if (type) | |
663 | valid_p = type->valid_p (object); | |
664 | } | |
665 | ||
666 | break; | |
667 | } | |
668 | } | |
669 | ||
670 | return valid_p; | |
671 | } | |
672 | ||
673 | ||
674 | /* Log error message with format string FORMAT and argument ARG. | |
675 | Signaling an error, e.g. when an image cannot be loaded, is not a | |
676 | good idea because this would interrupt redisplay, and the error | |
677 | message display would lead to another redisplay. This function | |
678 | therefore simply displays a message. */ | |
679 | ||
680 | static void | |
675e2c69 | 681 | image_error (const char *format, Lisp_Object arg1, Lisp_Object arg2) |
4ef0d4d0 KS |
682 | { |
683 | add_to_log (format, arg1, arg2); | |
684 | } | |
685 | ||
686 | ||
687 | \f | |
688 | /*********************************************************************** | |
689 | Image specifications | |
b0c396f7 | 690 | ***********************************************************************/ |
4ef0d4d0 KS |
691 | |
692 | enum image_value_type | |
b0c396f7 JV |
693 | { |
694 | IMAGE_DONT_CHECK_VALUE_TYPE, | |
695 | IMAGE_STRING_VALUE, | |
696 | IMAGE_STRING_OR_NIL_VALUE, | |
697 | IMAGE_SYMBOL_VALUE, | |
698 | IMAGE_POSITIVE_INTEGER_VALUE, | |
699 | IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, | |
700 | IMAGE_NON_NEGATIVE_INTEGER_VALUE, | |
701 | IMAGE_ASCENT_VALUE, | |
702 | IMAGE_INTEGER_VALUE, | |
703 | IMAGE_FUNCTION_VALUE, | |
704 | IMAGE_NUMBER_VALUE, | |
705 | IMAGE_BOOL_VALUE | |
706 | }; | |
4ef0d4d0 KS |
707 | |
708 | /* Structure used when parsing image specifications. */ | |
709 | ||
710 | struct image_keyword | |
711 | { | |
712 | /* Name of keyword. */ | |
675e2c69 | 713 | const char *name; |
4ef0d4d0 KS |
714 | |
715 | /* The type of value allowed. */ | |
716 | enum image_value_type type; | |
717 | ||
718 | /* Non-zero means key must be present. */ | |
719 | int mandatory_p; | |
720 | ||
721 | /* Used to recognize duplicate keywords in a property list. */ | |
722 | int count; | |
723 | ||
724 | /* The value that was found. */ | |
725 | Lisp_Object value; | |
726 | }; | |
727 | ||
728 | ||
f57e2426 J |
729 | static int parse_image_spec (Lisp_Object, struct image_keyword *, |
730 | int, Lisp_Object); | |
731 | static Lisp_Object image_spec_value (Lisp_Object, Lisp_Object, int *); | |
4ef0d4d0 KS |
732 | |
733 | ||
734 | /* Parse image spec SPEC according to KEYWORDS. A valid image spec | |
735 | has the format (image KEYWORD VALUE ...). One of the keyword/ | |
736 | value pairs must be `:type TYPE'. KEYWORDS is a vector of | |
737 | image_keywords structures of size NKEYWORDS describing other | |
738 | allowed keyword/value pairs. Value is non-zero if SPEC is valid. */ | |
739 | ||
740 | static int | |
d3da34e0 JB |
741 | parse_image_spec (Lisp_Object spec, struct image_keyword *keywords, |
742 | int nkeywords, Lisp_Object type) | |
4ef0d4d0 KS |
743 | { |
744 | int i; | |
745 | Lisp_Object plist; | |
746 | ||
747 | if (!IMAGEP (spec)) | |
748 | return 0; | |
749 | ||
750 | plist = XCDR (spec); | |
751 | while (CONSP (plist)) | |
752 | { | |
753 | Lisp_Object key, value; | |
754 | ||
755 | /* First element of a pair must be a symbol. */ | |
756 | key = XCAR (plist); | |
757 | plist = XCDR (plist); | |
758 | if (!SYMBOLP (key)) | |
759 | return 0; | |
760 | ||
761 | /* There must follow a value. */ | |
762 | if (!CONSP (plist)) | |
763 | return 0; | |
764 | value = XCAR (plist); | |
765 | plist = XCDR (plist); | |
766 | ||
767 | /* Find key in KEYWORDS. Error if not found. */ | |
768 | for (i = 0; i < nkeywords; ++i) | |
42a5b22f | 769 | if (strcmp (keywords[i].name, SSDATA (SYMBOL_NAME (key))) == 0) |
4ef0d4d0 KS |
770 | break; |
771 | ||
772 | if (i == nkeywords) | |
773 | continue; | |
774 | ||
775 | /* Record that we recognized the keyword. If a keywords | |
776 | was found more than once, it's an error. */ | |
777 | keywords[i].value = value; | |
778 | ++keywords[i].count; | |
779 | ||
780 | if (keywords[i].count > 1) | |
781 | return 0; | |
782 | ||
783 | /* Check type of value against allowed type. */ | |
784 | switch (keywords[i].type) | |
785 | { | |
786 | case IMAGE_STRING_VALUE: | |
787 | if (!STRINGP (value)) | |
788 | return 0; | |
789 | break; | |
790 | ||
791 | case IMAGE_STRING_OR_NIL_VALUE: | |
792 | if (!STRINGP (value) && !NILP (value)) | |
793 | return 0; | |
794 | break; | |
795 | ||
796 | case IMAGE_SYMBOL_VALUE: | |
797 | if (!SYMBOLP (value)) | |
798 | return 0; | |
799 | break; | |
800 | ||
801 | case IMAGE_POSITIVE_INTEGER_VALUE: | |
802 | if (!INTEGERP (value) || XINT (value) <= 0) | |
803 | return 0; | |
804 | break; | |
805 | ||
806 | case IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR: | |
807 | if (INTEGERP (value) && XINT (value) >= 0) | |
808 | break; | |
809 | if (CONSP (value) | |
810 | && INTEGERP (XCAR (value)) && INTEGERP (XCDR (value)) | |
811 | && XINT (XCAR (value)) >= 0 && XINT (XCDR (value)) >= 0) | |
812 | break; | |
813 | return 0; | |
814 | ||
815 | case IMAGE_ASCENT_VALUE: | |
816 | if (SYMBOLP (value) && EQ (value, Qcenter)) | |
817 | break; | |
818 | else if (INTEGERP (value) | |
819 | && XINT (value) >= 0 | |
820 | && XINT (value) <= 100) | |
821 | break; | |
822 | return 0; | |
823 | ||
824 | case IMAGE_NON_NEGATIVE_INTEGER_VALUE: | |
825 | if (!INTEGERP (value) || XINT (value) < 0) | |
826 | return 0; | |
827 | break; | |
828 | ||
829 | case IMAGE_DONT_CHECK_VALUE_TYPE: | |
830 | break; | |
831 | ||
832 | case IMAGE_FUNCTION_VALUE: | |
833 | value = indirect_function (value); | |
834 | if (SUBRP (value) | |
835 | || COMPILEDP (value) | |
836 | || (CONSP (value) && EQ (XCAR (value), Qlambda))) | |
837 | break; | |
838 | return 0; | |
839 | ||
840 | case IMAGE_NUMBER_VALUE: | |
841 | if (!INTEGERP (value) && !FLOATP (value)) | |
842 | return 0; | |
843 | break; | |
844 | ||
845 | case IMAGE_INTEGER_VALUE: | |
846 | if (!INTEGERP (value)) | |
847 | return 0; | |
848 | break; | |
849 | ||
850 | case IMAGE_BOOL_VALUE: | |
851 | if (!NILP (value) && !EQ (value, Qt)) | |
852 | return 0; | |
853 | break; | |
854 | ||
855 | default: | |
856 | abort (); | |
857 | break; | |
858 | } | |
859 | ||
860 | if (EQ (key, QCtype) && !EQ (type, value)) | |
861 | return 0; | |
862 | } | |
863 | ||
864 | /* Check that all mandatory fields are present. */ | |
865 | for (i = 0; i < nkeywords; ++i) | |
866 | if (keywords[i].mandatory_p && keywords[i].count == 0) | |
867 | return 0; | |
868 | ||
869 | return NILP (plist); | |
870 | } | |
871 | ||
872 | ||
873 | /* Return the value of KEY in image specification SPEC. Value is nil | |
874 | if KEY is not present in SPEC. if FOUND is not null, set *FOUND | |
875 | to 1 if KEY was found in SPEC, set it to 0 otherwise. */ | |
876 | ||
877 | static Lisp_Object | |
d3da34e0 | 878 | image_spec_value (Lisp_Object spec, Lisp_Object key, int *found) |
4ef0d4d0 KS |
879 | { |
880 | Lisp_Object tail; | |
881 | ||
882 | xassert (valid_image_p (spec)); | |
883 | ||
884 | for (tail = XCDR (spec); | |
885 | CONSP (tail) && CONSP (XCDR (tail)); | |
886 | tail = XCDR (XCDR (tail))) | |
887 | { | |
888 | if (EQ (XCAR (tail), key)) | |
889 | { | |
890 | if (found) | |
891 | *found = 1; | |
892 | return XCAR (XCDR (tail)); | |
893 | } | |
894 | } | |
895 | ||
896 | if (found) | |
897 | *found = 0; | |
898 | return Qnil; | |
899 | } | |
900 | ||
901 | ||
902 | DEFUN ("image-size", Fimage_size, Simage_size, 1, 3, 0, | |
903 | doc: /* Return the size of image SPEC as pair (WIDTH . HEIGHT). | |
904 | PIXELS non-nil means return the size in pixels, otherwise return the | |
905 | size in canonical character units. | |
906 | FRAME is the frame on which the image will be displayed. FRAME nil | |
907 | or omitted means use the selected frame. */) | |
5842a27b | 908 | (Lisp_Object spec, Lisp_Object pixels, Lisp_Object frame) |
4ef0d4d0 KS |
909 | { |
910 | Lisp_Object size; | |
911 | ||
912 | size = Qnil; | |
913 | if (valid_image_p (spec)) | |
914 | { | |
915 | struct frame *f = check_x_frame (frame); | |
916 | int id = lookup_image (f, spec); | |
917 | struct image *img = IMAGE_FROM_ID (f, id); | |
918 | int width = img->width + 2 * img->hmargin; | |
919 | int height = img->height + 2 * img->vmargin; | |
920 | ||
921 | if (NILP (pixels)) | |
922 | size = Fcons (make_float ((double) width / FRAME_COLUMN_WIDTH (f)), | |
923 | make_float ((double) height / FRAME_LINE_HEIGHT (f))); | |
924 | else | |
925 | size = Fcons (make_number (width), make_number (height)); | |
926 | } | |
927 | else | |
928 | error ("Invalid image specification"); | |
929 | ||
930 | return size; | |
931 | } | |
932 | ||
933 | ||
934 | DEFUN ("image-mask-p", Fimage_mask_p, Simage_mask_p, 1, 2, 0, | |
935 | doc: /* Return t if image SPEC has a mask bitmap. | |
936 | FRAME is the frame on which the image will be displayed. FRAME nil | |
937 | or omitted means use the selected frame. */) | |
5842a27b | 938 | (Lisp_Object spec, Lisp_Object frame) |
4ef0d4d0 KS |
939 | { |
940 | Lisp_Object mask; | |
941 | ||
942 | mask = Qnil; | |
943 | if (valid_image_p (spec)) | |
944 | { | |
945 | struct frame *f = check_x_frame (frame); | |
946 | int id = lookup_image (f, spec); | |
947 | struct image *img = IMAGE_FROM_ID (f, id); | |
948 | if (img->mask) | |
949 | mask = Qt; | |
950 | } | |
951 | else | |
952 | error ("Invalid image specification"); | |
953 | ||
954 | return mask; | |
955 | } | |
956 | ||
1546c559 JL |
957 | DEFUN ("image-metadata", Fimage_metadata, Simage_metadata, 1, 2, 0, |
958 | doc: /* Return metadata for image SPEC. | |
6ac3c7bb KS |
959 | FRAME is the frame on which the image will be displayed. FRAME nil |
960 | or omitted means use the selected frame. */) | |
5842a27b | 961 | (Lisp_Object spec, Lisp_Object frame) |
6ac3c7bb KS |
962 | { |
963 | Lisp_Object ext; | |
964 | ||
965 | ext = Qnil; | |
966 | if (valid_image_p (spec)) | |
967 | { | |
968 | struct frame *f = check_x_frame (frame); | |
969 | int id = lookup_image (f, spec); | |
970 | struct image *img = IMAGE_FROM_ID (f, id); | |
971 | ext = img->data.lisp_val; | |
972 | } | |
973 | ||
974 | return ext; | |
975 | } | |
976 | ||
4ef0d4d0 KS |
977 | \f |
978 | /*********************************************************************** | |
979 | Image type independent image structures | |
b0c396f7 | 980 | ***********************************************************************/ |
4ef0d4d0 | 981 | |
f57e2426 J |
982 | static struct image *make_image (Lisp_Object spec, unsigned hash); |
983 | static void free_image (struct frame *f, struct image *img); | |
984 | static int check_image_size (struct frame *f, int width, int height); | |
4ef0d4d0 | 985 | |
f1f25b99 | 986 | #define MAX_IMAGE_SIZE 6.0 |
4ef0d4d0 KS |
987 | /* Allocate and return a new image structure for image specification |
988 | SPEC. SPEC has a hash value of HASH. */ | |
989 | ||
990 | static struct image * | |
d3da34e0 | 991 | make_image (Lisp_Object spec, unsigned int hash) |
4ef0d4d0 KS |
992 | { |
993 | struct image *img = (struct image *) xmalloc (sizeof *img); | |
a2bc5bdd | 994 | Lisp_Object file = image_spec_value (spec, QCfile, NULL); |
4ef0d4d0 KS |
995 | |
996 | xassert (valid_image_p (spec)); | |
72af86bd | 997 | memset (img, 0, sizeof *img); |
a2bc5bdd | 998 | img->dependencies = NILP (file) ? Qnil : list1 (file); |
4ef0d4d0 KS |
999 | img->type = lookup_image_type (image_spec_value (spec, QCtype, NULL)); |
1000 | xassert (img->type != NULL); | |
1001 | img->spec = spec; | |
1002 | img->data.lisp_val = Qnil; | |
1003 | img->ascent = DEFAULT_IMAGE_ASCENT; | |
1004 | img->hash = hash; | |
6ac3c7bb | 1005 | img->corners[BOT_CORNER] = -1; /* Full image */ |
4ef0d4d0 KS |
1006 | return img; |
1007 | } | |
1008 | ||
1009 | ||
1010 | /* Free image IMG which was used on frame F, including its resources. */ | |
1011 | ||
1012 | static void | |
d3da34e0 | 1013 | free_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1014 | { |
1015 | if (img) | |
1016 | { | |
354884c4 | 1017 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1018 | |
1019 | /* Remove IMG from the hash table of its cache. */ | |
1020 | if (img->prev) | |
1021 | img->prev->next = img->next; | |
1022 | else | |
1023 | c->buckets[img->hash % IMAGE_CACHE_BUCKETS_SIZE] = img->next; | |
1024 | ||
1025 | if (img->next) | |
1026 | img->next->prev = img->prev; | |
1027 | ||
1028 | c->images[img->id] = NULL; | |
1029 | ||
1030 | /* Free resources, then free IMG. */ | |
1031 | img->type->free (f, img); | |
1032 | xfree (img); | |
1033 | } | |
1034 | } | |
1035 | ||
f1f25b99 CY |
1036 | /* Return 1 if the given widths and heights are valid for display; |
1037 | otherwise, return 0. */ | |
1038 | ||
1039 | int | |
d3da34e0 | 1040 | check_image_size (struct frame *f, int width, int height) |
f1f25b99 | 1041 | { |
7df4765a | 1042 | int w, h; |
f1f25b99 | 1043 | |
7df4765a | 1044 | if (width <= 0 || height <= 0) |
f1f25b99 CY |
1045 | return 0; |
1046 | ||
7df4765a KS |
1047 | if (INTEGERP (Vmax_image_size)) |
1048 | w = h = XINT (Vmax_image_size); | |
1049 | else if (FLOATP (Vmax_image_size)) | |
1050 | { | |
1051 | if (f != NULL) | |
1052 | { | |
1053 | w = FRAME_PIXEL_WIDTH (f); | |
1054 | h = FRAME_PIXEL_HEIGHT (f); | |
1055 | } | |
1056 | else | |
1057 | w = h = 1024; /* Arbitrary size for unknown frame. */ | |
1058 | w = (int) (XFLOAT_DATA (Vmax_image_size) * w); | |
1059 | h = (int) (XFLOAT_DATA (Vmax_image_size) * h); | |
1060 | } | |
1061 | else | |
1062 | return 1; | |
1063 | ||
1064 | return (width <= w && height <= h); | |
f1f25b99 | 1065 | } |
4ef0d4d0 KS |
1066 | |
1067 | /* Prepare image IMG for display on frame F. Must be called before | |
1068 | drawing an image. */ | |
1069 | ||
1070 | void | |
d3da34e0 | 1071 | prepare_image_for_display (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1072 | { |
1073 | EMACS_TIME t; | |
1074 | ||
1075 | /* We're about to display IMG, so set its timestamp to `now'. */ | |
1076 | EMACS_GET_TIME (t); | |
1077 | img->timestamp = EMACS_SECS (t); | |
1078 | ||
1079 | /* If IMG doesn't have a pixmap yet, load it now, using the image | |
1080 | type dependent loader function. */ | |
1081 | if (img->pixmap == NO_PIXMAP && !img->load_failed_p) | |
1082 | img->load_failed_p = img->type->load (f, img) == 0; | |
c7fea325 | 1083 | |
4ef0d4d0 KS |
1084 | } |
1085 | ||
1086 | ||
1087 | /* Value is the number of pixels for the ascent of image IMG when | |
1088 | drawn in face FACE. */ | |
1089 | ||
1090 | int | |
d3da34e0 | 1091 | image_ascent (struct image *img, struct face *face, struct glyph_slice *slice) |
4ef0d4d0 | 1092 | { |
1938bc36 | 1093 | int height; |
4ef0d4d0 KS |
1094 | int ascent; |
1095 | ||
1938bc36 KS |
1096 | if (slice->height == img->height) |
1097 | height = img->height + img->vmargin; | |
1098 | else if (slice->y == 0) | |
1099 | height = slice->height + img->vmargin; | |
1100 | else | |
1101 | height = slice->height; | |
1102 | ||
4ef0d4d0 KS |
1103 | if (img->ascent == CENTERED_IMAGE_ASCENT) |
1104 | { | |
1105 | if (face->font) | |
1106 | { | |
1107 | #ifdef HAVE_NTGUI | |
1108 | /* W32 specific version. Why?. ++kfs */ | |
5fc9fdeb JR |
1109 | ascent = height / 2 - (FONT_DESCENT (face->font) |
1110 | - FONT_BASE (face->font)) / 2; | |
4ef0d4d0 KS |
1111 | #else |
1112 | /* This expression is arranged so that if the image can't be | |
1113 | exactly centered, it will be moved slightly up. This is | |
1114 | because a typical font is `top-heavy' (due to the presence | |
1115 | uppercase letters), so the image placement should err towards | |
1116 | being top-heavy too. It also just generally looks better. */ | |
edfda783 AR |
1117 | ascent = (height + FONT_BASE(face->font) |
1118 | - FONT_DESCENT(face->font) + 1) / 2; | |
4ef0d4d0 KS |
1119 | #endif /* HAVE_NTGUI */ |
1120 | } | |
1121 | else | |
1122 | ascent = height / 2; | |
1123 | } | |
1124 | else | |
1125 | ascent = (int) (height * img->ascent / 100.0); | |
1126 | ||
1127 | return ascent; | |
1128 | } | |
1129 | ||
1130 | \f | |
1131 | /* Image background colors. */ | |
1132 | ||
1133 | /* Find the "best" corner color of a bitmap. | |
1134 | On W32, XIMG is assumed to a device context with the bitmap selected. */ | |
1135 | ||
1136 | static RGB_PIXEL_COLOR | |
d3da34e0 JB |
1137 | four_corners_best (XImagePtr_or_DC ximg, int *corners, |
1138 | unsigned long width, unsigned long height) | |
4ef0d4d0 | 1139 | { |
6ac3c7bb | 1140 | RGB_PIXEL_COLOR corner_pixels[4], best; |
4ef0d4d0 KS |
1141 | int i, best_count; |
1142 | ||
6ac3c7bb KS |
1143 | if (corners && corners[BOT_CORNER] >= 0) |
1144 | { | |
1145 | /* Get the colors at the corner_pixels of ximg. */ | |
1146 | corner_pixels[0] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[TOP_CORNER]); | |
1147 | corner_pixels[1] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[TOP_CORNER]); | |
1148 | corner_pixels[2] = GET_PIXEL (ximg, corners[RIGHT_CORNER] - 1, corners[BOT_CORNER] - 1); | |
1149 | corner_pixels[3] = GET_PIXEL (ximg, corners[LEFT_CORNER], corners[BOT_CORNER] - 1); | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | /* Get the colors at the corner_pixels of ximg. */ | |
1154 | corner_pixels[0] = GET_PIXEL (ximg, 0, 0); | |
1155 | corner_pixels[1] = GET_PIXEL (ximg, width - 1, 0); | |
1156 | corner_pixels[2] = GET_PIXEL (ximg, width - 1, height - 1); | |
1157 | corner_pixels[3] = GET_PIXEL (ximg, 0, height - 1); | |
1158 | } | |
4ef0d4d0 KS |
1159 | /* Choose the most frequently found color as background. */ |
1160 | for (i = best_count = 0; i < 4; ++i) | |
1161 | { | |
1162 | int j, n; | |
1163 | ||
1164 | for (j = n = 0; j < 4; ++j) | |
6ac3c7bb | 1165 | if (corner_pixels[i] == corner_pixels[j]) |
4ef0d4d0 KS |
1166 | ++n; |
1167 | ||
1168 | if (n > best_count) | |
6ac3c7bb | 1169 | best = corner_pixels[i], best_count = n; |
4ef0d4d0 KS |
1170 | } |
1171 | ||
1172 | return best; | |
1173 | } | |
1174 | ||
1175 | /* Portability macros */ | |
1176 | ||
1177 | #ifdef HAVE_NTGUI | |
1178 | ||
b0c396f7 | 1179 | #define Destroy_Image(img_dc, prev) \ |
4ef0d4d0 KS |
1180 | do { SelectObject (img_dc, prev); DeleteDC (img_dc); } while (0) |
1181 | ||
b0c396f7 | 1182 | #define Free_Pixmap(display, pixmap) \ |
4ef0d4d0 KS |
1183 | DeleteObject (pixmap) |
1184 | ||
edfda783 AR |
1185 | #elif defined (HAVE_NS) |
1186 | ||
1187 | #define Destroy_Image(ximg, dummy) \ | |
ed3751c8 | 1188 | ns_release_object (ximg) |
edfda783 AR |
1189 | |
1190 | #define Free_Pixmap(display, pixmap) \ | |
ed3751c8 | 1191 | ns_release_object (pixmap) |
edfda783 | 1192 | |
4ef0d4d0 KS |
1193 | #else |
1194 | ||
b0c396f7 | 1195 | #define Destroy_Image(ximg, dummy) \ |
4ef0d4d0 KS |
1196 | XDestroyImage (ximg) |
1197 | ||
b0c396f7 | 1198 | #define Free_Pixmap(display, pixmap) \ |
4ef0d4d0 KS |
1199 | XFreePixmap (display, pixmap) |
1200 | ||
edfda783 | 1201 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
1202 | |
1203 | ||
1204 | /* Return the `background' field of IMG. If IMG doesn't have one yet, | |
1205 | it is guessed heuristically. If non-zero, XIMG is an existing | |
1206 | XImage object (or device context with the image selected on W32) to | |
1f026899 | 1207 | use for the heuristic. */ |
4ef0d4d0 KS |
1208 | |
1209 | RGB_PIXEL_COLOR | |
d3da34e0 | 1210 | image_background (struct image *img, struct frame *f, XImagePtr_or_DC ximg) |
4ef0d4d0 KS |
1211 | { |
1212 | if (! img->background_valid) | |
1213 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1214 | { | |
1215 | int free_ximg = !ximg; | |
1216 | #ifdef HAVE_NTGUI | |
1217 | HGDIOBJ prev; | |
1218 | #endif /* HAVE_NTGUI */ | |
1219 | ||
1220 | if (free_ximg) | |
1221 | { | |
1222 | #ifndef HAVE_NTGUI | |
1223 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
1224 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1225 | #else | |
1226 | HDC frame_dc = get_frame_dc (f); | |
1227 | ximg = CreateCompatibleDC (frame_dc); | |
1228 | release_frame_dc (f, frame_dc); | |
1229 | prev = SelectObject (ximg, img->pixmap); | |
1230 | #endif /* !HAVE_NTGUI */ | |
1231 | } | |
1232 | ||
6ac3c7bb | 1233 | img->background = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
1234 | |
1235 | if (free_ximg) | |
1236 | Destroy_Image (ximg, prev); | |
1f026899 | 1237 | |
4ef0d4d0 KS |
1238 | img->background_valid = 1; |
1239 | } | |
1240 | ||
1241 | return img->background; | |
1242 | } | |
1243 | ||
1244 | /* Return the `background_transparent' field of IMG. If IMG doesn't | |
1245 | have one yet, it is guessed heuristically. If non-zero, MASK is an | |
1246 | existing XImage object to use for the heuristic. */ | |
1247 | ||
1248 | int | |
d3da34e0 | 1249 | image_background_transparent (struct image *img, struct frame *f, XImagePtr_or_DC mask) |
4ef0d4d0 KS |
1250 | { |
1251 | if (! img->background_transparent_valid) | |
1252 | /* IMG doesn't have a background yet, try to guess a reasonable value. */ | |
1253 | { | |
1254 | if (img->mask) | |
1255 | { | |
1256 | int free_mask = !mask; | |
1257 | #ifdef HAVE_NTGUI | |
1258 | HGDIOBJ prev; | |
1259 | #endif /* HAVE_NTGUI */ | |
1260 | ||
1261 | if (free_mask) | |
1262 | { | |
1263 | #ifndef HAVE_NTGUI | |
1264 | mask = XGetImage (FRAME_X_DISPLAY (f), img->mask, | |
1265 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
1266 | #else | |
1267 | HDC frame_dc = get_frame_dc (f); | |
1268 | mask = CreateCompatibleDC (frame_dc); | |
1269 | release_frame_dc (f, frame_dc); | |
1270 | prev = SelectObject (mask, img->mask); | |
1271 | #endif /* HAVE_NTGUI */ | |
1272 | } | |
1273 | ||
1274 | img->background_transparent | |
6ac3c7bb | 1275 | = (four_corners_best (mask, img->corners, img->width, img->height) == PIX_MASK_RETAIN); |
4ef0d4d0 KS |
1276 | |
1277 | if (free_mask) | |
1278 | Destroy_Image (mask, prev); | |
1279 | } | |
1280 | else | |
1281 | img->background_transparent = 0; | |
1282 | ||
1283 | img->background_transparent_valid = 1; | |
1284 | } | |
1285 | ||
1286 | return img->background_transparent; | |
1287 | } | |
1288 | ||
1289 | \f | |
1290 | /*********************************************************************** | |
1291 | Helper functions for X image types | |
b0c396f7 | 1292 | ***********************************************************************/ |
4ef0d4d0 | 1293 | |
f57e2426 J |
1294 | static void x_clear_image_1 (struct frame *, struct image *, int, |
1295 | int, int); | |
1296 | static void x_clear_image (struct frame *f, struct image *img); | |
1297 | static unsigned long x_alloc_image_color (struct frame *f, | |
1298 | struct image *img, | |
1299 | Lisp_Object color_name, | |
1300 | unsigned long dflt); | |
4ef0d4d0 KS |
1301 | |
1302 | ||
1303 | /* Clear X resources of image IMG on frame F. PIXMAP_P non-zero means | |
1304 | free the pixmap if any. MASK_P non-zero means clear the mask | |
1305 | pixmap if any. COLORS_P non-zero means free colors allocated for | |
1306 | the image, if any. */ | |
1307 | ||
1308 | static void | |
d3da34e0 JB |
1309 | x_clear_image_1 (struct frame *f, struct image *img, int pixmap_p, int mask_p, |
1310 | int colors_p) | |
4ef0d4d0 KS |
1311 | { |
1312 | if (pixmap_p && img->pixmap) | |
1313 | { | |
1314 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
1315 | img->pixmap = NO_PIXMAP; | |
5a06864f | 1316 | /* NOTE (HAVE_NS): background color is NOT an indexed color! */ |
4ef0d4d0 KS |
1317 | img->background_valid = 0; |
1318 | } | |
1319 | ||
1320 | if (mask_p && img->mask) | |
1321 | { | |
1322 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1323 | img->mask = NO_PIXMAP; | |
1324 | img->background_transparent_valid = 0; | |
1325 | } | |
1326 | ||
1327 | if (colors_p && img->ncolors) | |
1328 | { | |
4ef0d4d0 KS |
1329 | /* W32_TODO: color table support. */ |
1330 | #ifdef HAVE_X_WINDOWS | |
1331 | x_free_colors (f, img->colors, img->ncolors); | |
1332 | #endif /* HAVE_X_WINDOWS */ | |
1333 | xfree (img->colors); | |
1334 | img->colors = NULL; | |
1335 | img->ncolors = 0; | |
1336 | } | |
c7fea325 | 1337 | |
4ef0d4d0 KS |
1338 | } |
1339 | ||
1340 | /* Free X resources of image IMG which is used on frame F. */ | |
1341 | ||
1342 | static void | |
d3da34e0 | 1343 | x_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1344 | { |
1345 | BLOCK_INPUT; | |
1346 | x_clear_image_1 (f, img, 1, 1, 1); | |
1347 | UNBLOCK_INPUT; | |
1348 | } | |
1349 | ||
1350 | ||
1351 | /* Allocate color COLOR_NAME for image IMG on frame F. If color | |
1352 | cannot be allocated, use DFLT. Add a newly allocated color to | |
1353 | IMG->colors, so that it can be freed again. Value is the pixel | |
1354 | color. */ | |
1355 | ||
1356 | static unsigned long | |
d3da34e0 JB |
1357 | x_alloc_image_color (struct frame *f, struct image *img, Lisp_Object color_name, |
1358 | unsigned long dflt) | |
4ef0d4d0 KS |
1359 | { |
1360 | XColor color; | |
1361 | unsigned long result; | |
1362 | ||
1363 | xassert (STRINGP (color_name)); | |
1364 | ||
42a5b22f | 1365 | if (x_defined_color (f, SSDATA (color_name), &color, 1)) |
4ef0d4d0 KS |
1366 | { |
1367 | /* This isn't called frequently so we get away with simply | |
1368 | reallocating the color vector to the needed size, here. */ | |
1369 | ++img->ncolors; | |
1370 | img->colors = | |
1371 | (unsigned long *) xrealloc (img->colors, | |
1372 | img->ncolors * sizeof *img->colors); | |
1373 | img->colors[img->ncolors - 1] = color.pixel; | |
1374 | result = color.pixel; | |
1375 | } | |
1376 | else | |
1377 | result = dflt; | |
1378 | ||
1379 | return result; | |
1380 | } | |
1381 | ||
1382 | ||
1383 | \f | |
1384 | /*********************************************************************** | |
1385 | Image Cache | |
b0c396f7 | 1386 | ***********************************************************************/ |
4ef0d4d0 | 1387 | |
f57e2426 J |
1388 | static struct image *search_image_cache (struct frame *, Lisp_Object, unsigned); |
1389 | static void cache_image (struct frame *f, struct image *img); | |
1390 | static void postprocess_image (struct frame *, struct image *); | |
4ef0d4d0 KS |
1391 | |
1392 | /* Return a new, initialized image cache that is allocated from the | |
1393 | heap. Call free_image_cache to free an image cache. */ | |
1394 | ||
1395 | struct image_cache * | |
d3da34e0 | 1396 | make_image_cache (void) |
4ef0d4d0 KS |
1397 | { |
1398 | struct image_cache *c = (struct image_cache *) xmalloc (sizeof *c); | |
1399 | int size; | |
1400 | ||
72af86bd | 1401 | memset (c, 0, sizeof *c); |
4ef0d4d0 KS |
1402 | c->size = 50; |
1403 | c->images = (struct image **) xmalloc (c->size * sizeof *c->images); | |
1404 | size = IMAGE_CACHE_BUCKETS_SIZE * sizeof *c->buckets; | |
1405 | c->buckets = (struct image **) xmalloc (size); | |
72af86bd | 1406 | memset (c->buckets, 0, size); |
4ef0d4d0 KS |
1407 | return c; |
1408 | } | |
1409 | ||
1410 | ||
d3c35d17 CY |
1411 | /* Find an image matching SPEC in the cache, and return it. If no |
1412 | image is found, return NULL. */ | |
1413 | static struct image * | |
d3da34e0 | 1414 | search_image_cache (struct frame *f, Lisp_Object spec, unsigned int hash) |
483e7ae0 | 1415 | { |
91be6b66 | 1416 | struct image *img; |
354884c4 | 1417 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
483e7ae0 CY |
1418 | int i = hash % IMAGE_CACHE_BUCKETS_SIZE; |
1419 | ||
8198352b CY |
1420 | if (!c) return NULL; |
1421 | ||
d3c35d17 CY |
1422 | /* If the image spec does not specify a background color, the cached |
1423 | image must have the same background color as the current frame. | |
cf26ebe8 CY |
1424 | The foreground color must also match, for the sake of monochrome |
1425 | images. | |
1426 | ||
1427 | In fact, we could ignore the foreground color matching condition | |
1428 | for color images, or if the image spec specifies :foreground; | |
1429 | similarly we could ignore the background color matching condition | |
1430 | for formats that don't use transparency (such as jpeg), or if the | |
1431 | image spec specifies :background. However, the extra memory | |
1432 | usage is probably negligible in practice, so we don't bother. */ | |
d3c35d17 | 1433 | |
483e7ae0 | 1434 | for (img = c->buckets[i]; img; img = img->next) |
d3c35d17 CY |
1435 | if (img->hash == hash |
1436 | && !NILP (Fequal (img->spec, spec)) | |
c5b8e0ea YM |
1437 | && img->frame_foreground == FRAME_FOREGROUND_PIXEL (f) |
1438 | && img->frame_background == FRAME_BACKGROUND_PIXEL (f)) | |
d3c35d17 CY |
1439 | break; |
1440 | return img; | |
1441 | } | |
1442 | ||
1443 | ||
1444 | /* Search frame F for an image with spec SPEC, and free it. */ | |
1445 | ||
1446 | static void | |
d3da34e0 | 1447 | uncache_image (struct frame *f, Lisp_Object spec) |
d3c35d17 CY |
1448 | { |
1449 | struct image *img = search_image_cache (f, spec, sxhash (spec, 0)); | |
1450 | if (img) | |
be3faa80 CY |
1451 | { |
1452 | free_image (f, img); | |
1453 | /* As display glyphs may still be referring to the image ID, we | |
1454 | must garbage the frame (Bug#6426). */ | |
1455 | SET_FRAME_GARBAGED (f); | |
1456 | } | |
483e7ae0 CY |
1457 | } |
1458 | ||
1459 | ||
4ef0d4d0 KS |
1460 | /* Free image cache of frame F. Be aware that X frames share images |
1461 | caches. */ | |
1462 | ||
1463 | void | |
d3da34e0 | 1464 | free_image_cache (struct frame *f) |
4ef0d4d0 | 1465 | { |
354884c4 | 1466 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1467 | if (c) |
1468 | { | |
1469 | int i; | |
1470 | ||
1471 | /* Cache should not be referenced by any frame when freed. */ | |
1472 | xassert (c->refcount == 0); | |
1473 | ||
1474 | for (i = 0; i < c->used; ++i) | |
1475 | free_image (f, c->images[i]); | |
1476 | xfree (c->images); | |
1477 | xfree (c->buckets); | |
1478 | xfree (c); | |
354884c4 | 1479 | FRAME_IMAGE_CACHE (f) = NULL; |
4ef0d4d0 KS |
1480 | } |
1481 | } | |
1482 | ||
1483 | ||
a2bc5bdd SM |
1484 | /* Clear image cache of frame F. FILTER=t means free all images. |
1485 | FILTER=nil means clear only images that haven't been | |
1486 | displayed for some time. | |
1487 | Else, only free the images which have FILTER in their `dependencies'. | |
1488 | Should be called from time to time to reduce the number of loaded images. | |
1489 | If image-cache-eviction-delay is non-nil, this frees images in the cache | |
1490 | which weren't displayed for at least that many seconds. */ | |
4ef0d4d0 | 1491 | |
ce0ad53d | 1492 | static void |
a2bc5bdd | 1493 | clear_image_cache (struct frame *f, Lisp_Object filter) |
4ef0d4d0 | 1494 | { |
354884c4 | 1495 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 | 1496 | |
98fe5161 | 1497 | if (c) |
4ef0d4d0 | 1498 | { |
98fe5161 | 1499 | int i, nfreed = 0; |
4ef0d4d0 KS |
1500 | |
1501 | /* Block input so that we won't be interrupted by a SIGIO | |
1502 | while being in an inconsistent state. */ | |
1503 | BLOCK_INPUT; | |
1504 | ||
98fe5161 | 1505 | if (!NILP (filter)) |
4ef0d4d0 | 1506 | { |
98fe5161 CY |
1507 | /* Filter image cache. */ |
1508 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1509 | { |
98fe5161 CY |
1510 | struct image *img = c->images[i]; |
1511 | if (img && (EQ (Qt, filter) | |
1512 | || !NILP (Fmember (filter, img->dependencies)))) | |
1513 | { | |
1514 | free_image (f, img); | |
1515 | ++nfreed; | |
1516 | } | |
1517 | } | |
1518 | } | |
1519 | else if (INTEGERP (Vimage_cache_eviction_delay)) | |
4ef0d4d0 | 1520 | { |
98fe5161 CY |
1521 | /* Free cache based on timestamp. */ |
1522 | EMACS_TIME t; | |
1523 | unsigned long old; | |
1524 | int delay, nimages = 0; | |
1525 | ||
1526 | for (i = 0; i < c->used; ++i) | |
1527 | if (c->images[i]) | |
1528 | nimages++; | |
1529 | ||
1530 | /* If the number of cached images has grown unusually large, | |
1531 | decrease the cache eviction delay (Bug#6230). */ | |
1532 | delay = XFASTINT (Vimage_cache_eviction_delay); | |
1533 | if (nimages > 40) | |
1534 | delay = max (1, 1600 * delay / (nimages*nimages)); | |
1535 | ||
1536 | EMACS_GET_TIME (t); | |
1537 | old = EMACS_SECS (t) - delay; | |
1538 | ||
1539 | for (i = 0; i < c->used; ++i) | |
4ef0d4d0 | 1540 | { |
98fe5161 CY |
1541 | struct image *img = c->images[i]; |
1542 | if (img && img->timestamp < old) | |
1543 | { | |
1544 | free_image (f, img); | |
1545 | ++nfreed; | |
1546 | } | |
4ef0d4d0 KS |
1547 | } |
1548 | } | |
1549 | ||
1550 | /* We may be clearing the image cache because, for example, | |
1551 | Emacs was iconified for a longer period of time. In that | |
1552 | case, current matrices may still contain references to | |
1553 | images freed above. So, clear these matrices. */ | |
1554 | if (nfreed) | |
1555 | { | |
1556 | Lisp_Object tail, frame; | |
1557 | ||
1558 | FOR_EACH_FRAME (tail, frame) | |
1559 | { | |
1560 | struct frame *f = XFRAME (frame); | |
354884c4 | 1561 | if (FRAME_IMAGE_CACHE (f) == c) |
4ef0d4d0 KS |
1562 | clear_current_matrices (f); |
1563 | } | |
1564 | ||
1565 | ++windows_or_buffers_changed; | |
1566 | } | |
1567 | ||
1568 | UNBLOCK_INPUT; | |
1569 | } | |
1570 | } | |
1571 | ||
354884c4 | 1572 | void |
a2bc5bdd | 1573 | clear_image_caches (Lisp_Object filter) |
354884c4 SM |
1574 | { |
1575 | /* FIXME: We want to do | |
1576 | * struct terminal *t; | |
1577 | * for (t = terminal_list; t; t = t->next_terminal) | |
1578 | * clear_image_cache (t, filter); */ | |
1579 | Lisp_Object tail, frame; | |
1580 | FOR_EACH_FRAME (tail, frame) | |
1581 | if (FRAME_WINDOW_P (XFRAME (frame))) | |
a2bc5bdd | 1582 | clear_image_cache (XFRAME (frame), filter); |
354884c4 | 1583 | } |
4ef0d4d0 KS |
1584 | |
1585 | DEFUN ("clear-image-cache", Fclear_image_cache, Sclear_image_cache, | |
1586 | 0, 1, 0, | |
a2bc5bdd SM |
1587 | doc: /* Clear the image cache. |
1588 | FILTER nil or a frame means clear all images in the selected frame. | |
1589 | FILTER t means clear the image caches of all frames. | |
1590 | Anything else, means only clear those images which refer to FILTER, | |
1591 | which is then usually a filename. */) | |
5842a27b | 1592 | (Lisp_Object filter) |
4ef0d4d0 | 1593 | { |
a2bc5bdd SM |
1594 | if (!(EQ (filter, Qnil) || FRAMEP (filter))) |
1595 | clear_image_caches (filter); | |
4ef0d4d0 | 1596 | else |
a2bc5bdd | 1597 | clear_image_cache (check_x_frame (filter), Qt); |
4ef0d4d0 KS |
1598 | |
1599 | return Qnil; | |
1600 | } | |
1601 | ||
1602 | ||
110683ad | 1603 | DEFUN ("image-flush", Fimage_flush, Simage_flush, |
483e7ae0 | 1604 | 1, 2, 0, |
110683ad | 1605 | doc: /* Fush the image with specification SPEC on frame FRAME. |
b0c396f7 JV |
1606 | This removes the image from the Emacs image cache. If SPEC specifies |
1607 | an image file, the next redisplay of this image will read from the | |
1608 | current contents of that file. | |
110683ad | 1609 | |
483e7ae0 CY |
1610 | FRAME nil or omitted means use the selected frame. |
1611 | FRAME t means refresh the image on all frames. */) | |
5842a27b | 1612 | (Lisp_Object spec, Lisp_Object frame) |
483e7ae0 CY |
1613 | { |
1614 | if (!valid_image_p (spec)) | |
1615 | error ("Invalid image specification"); | |
1616 | ||
1617 | if (EQ (frame, Qt)) | |
1618 | { | |
1619 | Lisp_Object tail; | |
1620 | FOR_EACH_FRAME (tail, frame) | |
1621 | { | |
1622 | struct frame *f = XFRAME (frame); | |
1623 | if (FRAME_WINDOW_P (f)) | |
1624 | uncache_image (f, spec); | |
1625 | } | |
1626 | } | |
1627 | else | |
1628 | uncache_image (check_x_frame (frame), spec); | |
1629 | ||
1630 | return Qnil; | |
1631 | } | |
1632 | ||
1633 | ||
4ef0d4d0 KS |
1634 | /* Compute masks and transform image IMG on frame F, as specified |
1635 | by the image's specification, */ | |
1636 | ||
1637 | static void | |
d3da34e0 | 1638 | postprocess_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
1639 | { |
1640 | /* Manipulation of the image's mask. */ | |
1641 | if (img->pixmap) | |
1642 | { | |
1643 | Lisp_Object conversion, spec; | |
1644 | Lisp_Object mask; | |
1645 | ||
1646 | spec = img->spec; | |
1647 | ||
1648 | /* `:heuristic-mask t' | |
1649 | `:mask heuristic' | |
1650 | means build a mask heuristically. | |
1651 | `:heuristic-mask (R G B)' | |
1652 | `:mask (heuristic (R G B))' | |
1653 | means build a mask from color (R G B) in the | |
1654 | image. | |
1655 | `:mask nil' | |
1656 | means remove a mask, if any. */ | |
1657 | ||
1658 | mask = image_spec_value (spec, QCheuristic_mask, NULL); | |
1659 | if (!NILP (mask)) | |
1660 | x_build_heuristic_mask (f, img, mask); | |
1661 | else | |
1662 | { | |
1663 | int found_p; | |
1664 | ||
1665 | mask = image_spec_value (spec, QCmask, &found_p); | |
1666 | ||
1667 | if (EQ (mask, Qheuristic)) | |
1668 | x_build_heuristic_mask (f, img, Qt); | |
1669 | else if (CONSP (mask) | |
1670 | && EQ (XCAR (mask), Qheuristic)) | |
1671 | { | |
1672 | if (CONSP (XCDR (mask))) | |
1673 | x_build_heuristic_mask (f, img, XCAR (XCDR (mask))); | |
1674 | else | |
1675 | x_build_heuristic_mask (f, img, XCDR (mask)); | |
1676 | } | |
1677 | else if (NILP (mask) && found_p && img->mask) | |
1678 | { | |
1679 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
1680 | img->mask = NO_PIXMAP; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | ||
1685 | /* Should we apply an image transformation algorithm? */ | |
1686 | conversion = image_spec_value (spec, QCconversion, NULL); | |
1687 | if (EQ (conversion, Qdisabled)) | |
1688 | x_disable_image (f, img); | |
1689 | else if (EQ (conversion, Qlaplace)) | |
1690 | x_laplace (f, img); | |
1691 | else if (EQ (conversion, Qemboss)) | |
1692 | x_emboss (f, img); | |
1693 | else if (CONSP (conversion) | |
1694 | && EQ (XCAR (conversion), Qedge_detection)) | |
1695 | { | |
1696 | Lisp_Object tem; | |
1697 | tem = XCDR (conversion); | |
1698 | if (CONSP (tem)) | |
1699 | x_edge_detection (f, img, | |
1700 | Fplist_get (tem, QCmatrix), | |
1701 | Fplist_get (tem, QCcolor_adjustment)); | |
1702 | } | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | ||
1707 | /* Return the id of image with Lisp specification SPEC on frame F. | |
1708 | SPEC must be a valid Lisp image specification (see valid_image_p). */ | |
1709 | ||
1710 | int | |
d3da34e0 | 1711 | lookup_image (struct frame *f, Lisp_Object spec) |
4ef0d4d0 | 1712 | { |
4a0e3f08 | 1713 | struct image_cache *c; |
4ef0d4d0 | 1714 | struct image *img; |
4ef0d4d0 | 1715 | unsigned 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 | ||
354884c4 | 1723 | c = FRAME_IMAGE_CACHE (f); |
4a0e3f08 | 1724 | |
4ef0d4d0 KS |
1725 | /* Look up SPEC in the hash table of the image cache. */ |
1726 | hash = sxhash (spec, 0); | |
d3c35d17 | 1727 | img = search_image_cache (f, spec, hash); |
f1f25b99 CY |
1728 | if (img && img->load_failed_p) |
1729 | { | |
1730 | free_image (f, img); | |
1731 | img = NULL; | |
1732 | } | |
1733 | ||
4ef0d4d0 KS |
1734 | /* If not found, create a new image and cache it. */ |
1735 | if (img == NULL) | |
1736 | { | |
4ef0d4d0 KS |
1737 | BLOCK_INPUT; |
1738 | img = make_image (spec, hash); | |
1739 | cache_image (f, img); | |
1740 | img->load_failed_p = img->type->load (f, img) == 0; | |
c5b8e0ea YM |
1741 | img->frame_foreground = FRAME_FOREGROUND_PIXEL (f); |
1742 | img->frame_background = FRAME_BACKGROUND_PIXEL (f); | |
4ef0d4d0 KS |
1743 | |
1744 | /* If we can't load the image, and we don't have a width and | |
1745 | height, use some arbitrary width and height so that we can | |
1746 | draw a rectangle for it. */ | |
1747 | if (img->load_failed_p) | |
1748 | { | |
1749 | Lisp_Object value; | |
1750 | ||
1751 | value = image_spec_value (spec, QCwidth, NULL); | |
1752 | img->width = (INTEGERP (value) | |
1753 | ? XFASTINT (value) : DEFAULT_IMAGE_WIDTH); | |
1754 | value = image_spec_value (spec, QCheight, NULL); | |
1755 | img->height = (INTEGERP (value) | |
1756 | ? XFASTINT (value) : DEFAULT_IMAGE_HEIGHT); | |
1757 | } | |
1758 | else | |
1759 | { | |
1760 | /* Handle image type independent image attributes | |
1761 | `:ascent ASCENT', `:margin MARGIN', `:relief RELIEF', | |
1762 | `:background COLOR'. */ | |
1763 | Lisp_Object ascent, margin, relief, bg; | |
1764 | ||
1765 | ascent = image_spec_value (spec, QCascent, NULL); | |
1766 | if (INTEGERP (ascent)) | |
1767 | img->ascent = XFASTINT (ascent); | |
1768 | else if (EQ (ascent, Qcenter)) | |
1769 | img->ascent = CENTERED_IMAGE_ASCENT; | |
1770 | ||
1771 | margin = image_spec_value (spec, QCmargin, NULL); | |
1772 | if (INTEGERP (margin) && XINT (margin) >= 0) | |
1773 | img->vmargin = img->hmargin = XFASTINT (margin); | |
1774 | else if (CONSP (margin) && INTEGERP (XCAR (margin)) | |
1775 | && INTEGERP (XCDR (margin))) | |
1776 | { | |
1777 | if (XINT (XCAR (margin)) > 0) | |
1778 | img->hmargin = XFASTINT (XCAR (margin)); | |
1779 | if (XINT (XCDR (margin)) > 0) | |
1780 | img->vmargin = XFASTINT (XCDR (margin)); | |
1781 | } | |
1782 | ||
1783 | relief = image_spec_value (spec, QCrelief, NULL); | |
1784 | if (INTEGERP (relief)) | |
1785 | { | |
1786 | img->relief = XINT (relief); | |
1ea40aa2 EZ |
1787 | img->hmargin += eabs (img->relief); |
1788 | img->vmargin += eabs (img->relief); | |
4ef0d4d0 KS |
1789 | } |
1790 | ||
1791 | if (! img->background_valid) | |
1792 | { | |
1793 | bg = image_spec_value (img->spec, QCbackground, NULL); | |
1794 | if (!NILP (bg)) | |
1795 | { | |
1796 | img->background | |
1797 | = x_alloc_image_color (f, img, bg, | |
1798 | FRAME_BACKGROUND_PIXEL (f)); | |
1799 | img->background_valid = 1; | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | /* Do image transformations and compute masks, unless we | |
1804 | don't have the image yet. */ | |
1805 | if (!EQ (*img->type->type, Qpostscript)) | |
1806 | postprocess_image (f, img); | |
1807 | } | |
1808 | ||
1809 | UNBLOCK_INPUT; | |
1810 | } | |
1811 | ||
1812 | /* We're using IMG, so set its timestamp to `now'. */ | |
1813 | EMACS_GET_TIME (now); | |
1814 | img->timestamp = EMACS_SECS (now); | |
1815 | ||
4ef0d4d0 KS |
1816 | /* Value is the image id. */ |
1817 | return img->id; | |
1818 | } | |
1819 | ||
1820 | ||
1821 | /* Cache image IMG in the image cache of frame F. */ | |
1822 | ||
1823 | static void | |
d3da34e0 | 1824 | cache_image (struct frame *f, struct image *img) |
4ef0d4d0 | 1825 | { |
354884c4 | 1826 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
1827 | int i; |
1828 | ||
1829 | /* Find a free slot in c->images. */ | |
1830 | for (i = 0; i < c->used; ++i) | |
1831 | if (c->images[i] == NULL) | |
1832 | break; | |
1833 | ||
1834 | /* If no free slot found, maybe enlarge c->images. */ | |
1835 | if (i == c->used && c->used == c->size) | |
1836 | { | |
1837 | c->size *= 2; | |
1838 | c->images = (struct image **) xrealloc (c->images, | |
1839 | c->size * sizeof *c->images); | |
1840 | } | |
1841 | ||
1842 | /* Add IMG to c->images, and assign IMG an id. */ | |
1843 | c->images[i] = img; | |
1844 | img->id = i; | |
1845 | if (i == c->used) | |
1846 | ++c->used; | |
1847 | ||
1848 | /* Add IMG to the cache's hash table. */ | |
1849 | i = img->hash % IMAGE_CACHE_BUCKETS_SIZE; | |
1850 | img->next = c->buckets[i]; | |
1851 | if (img->next) | |
1852 | img->next->prev = img; | |
1853 | img->prev = NULL; | |
1854 | c->buckets[i] = img; | |
1855 | } | |
1856 | ||
1857 | ||
1858 | /* Call FN on every image in the image cache of frame F. Used to mark | |
1859 | Lisp Objects in the image cache. */ | |
1860 | ||
354884c4 SM |
1861 | /* Mark Lisp objects in image IMG. */ |
1862 | ||
1863 | static void | |
d3da34e0 | 1864 | mark_image (struct image *img) |
354884c4 SM |
1865 | { |
1866 | mark_object (img->spec); | |
a2bc5bdd | 1867 | mark_object (img->dependencies); |
354884c4 SM |
1868 | |
1869 | if (!NILP (img->data.lisp_val)) | |
1870 | mark_object (img->data.lisp_val); | |
1871 | } | |
1872 | ||
1873 | ||
4ef0d4d0 | 1874 | void |
354884c4 | 1875 | mark_image_cache (struct image_cache *c) |
4ef0d4d0 | 1876 | { |
354884c4 | 1877 | if (c) |
4ef0d4d0 | 1878 | { |
354884c4 SM |
1879 | int i; |
1880 | for (i = 0; i < c->used; ++i) | |
1881 | if (c->images[i]) | |
1882 | mark_image (c->images[i]); | |
4ef0d4d0 KS |
1883 | } |
1884 | } | |
1885 | ||
1886 | ||
1887 | \f | |
1888 | /*********************************************************************** | |
9e2a2647 | 1889 | X / NS / W32 support code |
b0c396f7 | 1890 | ***********************************************************************/ |
4ef0d4d0 KS |
1891 | |
1892 | #ifdef HAVE_NTGUI | |
1893 | ||
1894 | /* Macro for defining functions that will be loaded from image DLLs. */ | |
14beddf4 | 1895 | #define DEF_IMGLIB_FN(rettype,func,args) rettype (FAR CDECL *fn_##func)args |
4ef0d4d0 KS |
1896 | |
1897 | /* Macro for loading those image functions from the library. */ | |
b0c396f7 JV |
1898 | #define LOAD_IMGLIB_FN(lib,func) { \ |
1899 | fn_##func = (void *) GetProcAddress (lib, #func); \ | |
1900 | if (!fn_##func) return 0; \ | |
4ef0d4d0 KS |
1901 | } |
1902 | ||
0855eb52 | 1903 | /* Load a DLL implementing an image type. |
2e288d54 JB |
1904 | The argument LIBRARIES is usually the variable |
1905 | `dynamic-library-alist', which associates a symbol, identifying | |
1906 | an external DLL library, to a list of possible filenames. | |
0855eb52 | 1907 | The function returns NULL if no library could be loaded for |
2e288d54 | 1908 | the given symbol, or if the library was previously loaded; |
0855eb52 JB |
1909 | else the handle of the DLL. */ |
1910 | static HMODULE | |
1911 | w32_delayed_load (Lisp_Object libraries, Lisp_Object type) | |
1912 | { | |
1913 | HMODULE library = NULL; | |
1914 | ||
1915 | if (CONSP (libraries) && NILP (Fassq (type, Vimage_type_cache))) | |
1916 | { | |
1917 | Lisp_Object dlls = Fassq (type, libraries); | |
1918 | ||
1919 | if (CONSP (dlls)) | |
1920 | for (dlls = XCDR (dlls); CONSP (dlls); dlls = XCDR (dlls)) | |
1921 | { | |
1922 | CHECK_STRING_CAR (dlls); | |
1923 | if (library = LoadLibrary (SDATA (XCAR (dlls)))) | |
1924 | break; | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | return library; | |
1929 | } | |
1930 | ||
4ef0d4d0 KS |
1931 | #endif /* HAVE_NTGUI */ |
1932 | ||
f57e2426 J |
1933 | static int x_create_x_image_and_pixmap (struct frame *, int, int, int, |
1934 | XImagePtr *, Pixmap *); | |
1935 | static void x_destroy_x_image (XImagePtr); | |
1936 | static void x_put_x_image (struct frame *, XImagePtr, Pixmap, int, int); | |
4ef0d4d0 KS |
1937 | |
1938 | ||
1939 | /* Create an XImage and a pixmap of size WIDTH x HEIGHT for use on | |
1940 | frame F. Set *XIMG and *PIXMAP to the XImage and Pixmap created. | |
1941 | Set (*XIMG)->data to a raster of WIDTH x HEIGHT pixels allocated | |
1942 | via xmalloc. Print error messages via image_error if an error | |
1943 | occurs. Value is non-zero if successful. | |
1944 | ||
1945 | On W32, a DEPTH of zero signifies a 24 bit image, otherwise DEPTH | |
1946 | should indicate the bit depth of the image. */ | |
1947 | ||
1948 | static int | |
d3da34e0 JB |
1949 | x_create_x_image_and_pixmap (struct frame *f, int width, int height, int depth, |
1950 | XImagePtr *ximg, Pixmap *pixmap) | |
4ef0d4d0 KS |
1951 | { |
1952 | #ifdef HAVE_X_WINDOWS | |
1953 | Display *display = FRAME_X_DISPLAY (f); | |
1954 | Window window = FRAME_X_WINDOW (f); | |
1955 | Screen *screen = FRAME_X_SCREEN (f); | |
1956 | ||
1957 | xassert (interrupt_input_blocked); | |
1958 | ||
1959 | if (depth <= 0) | |
1960 | depth = DefaultDepthOfScreen (screen); | |
1961 | *ximg = XCreateImage (display, DefaultVisualOfScreen (screen), | |
1962 | depth, ZPixmap, 0, NULL, width, height, | |
1963 | depth > 16 ? 32 : depth > 8 ? 16 : 8, 0); | |
1964 | if (*ximg == NULL) | |
1965 | { | |
1966 | image_error ("Unable to allocate X image", Qnil, Qnil); | |
1967 | return 0; | |
1968 | } | |
1969 | ||
1970 | /* Allocate image raster. */ | |
1971 | (*ximg)->data = (char *) xmalloc ((*ximg)->bytes_per_line * height); | |
1972 | ||
1973 | /* Allocate a pixmap of the same size. */ | |
1974 | *pixmap = XCreatePixmap (display, window, width, height, depth); | |
1975 | if (*pixmap == NO_PIXMAP) | |
1976 | { | |
1977 | x_destroy_x_image (*ximg); | |
1978 | *ximg = NULL; | |
1979 | image_error ("Unable to create X pixmap", Qnil, Qnil); | |
1980 | return 0; | |
1981 | } | |
1982 | ||
1983 | return 1; | |
1984 | #endif /* HAVE_X_WINDOWS */ | |
1985 | ||
1986 | #ifdef HAVE_NTGUI | |
1987 | ||
1988 | BITMAPINFOHEADER *header; | |
1989 | HDC hdc; | |
1990 | int scanline_width_bits; | |
1991 | int remainder; | |
1992 | int palette_colors = 0; | |
1993 | ||
1994 | if (depth == 0) | |
1995 | depth = 24; | |
1996 | ||
1997 | if (depth != 1 && depth != 4 && depth != 8 | |
1998 | && depth != 16 && depth != 24 && depth != 32) | |
1999 | { | |
2000 | image_error ("Invalid image bit depth specified", Qnil, Qnil); | |
2001 | return 0; | |
2002 | } | |
2003 | ||
2004 | scanline_width_bits = width * depth; | |
2005 | remainder = scanline_width_bits % 32; | |
2006 | ||
2007 | if (remainder) | |
2008 | scanline_width_bits += 32 - remainder; | |
2009 | ||
2010 | /* Bitmaps with a depth less than 16 need a palette. */ | |
2011 | /* BITMAPINFO structure already contains the first RGBQUAD. */ | |
2012 | if (depth < 16) | |
2013 | palette_colors = 1 << depth - 1; | |
2014 | ||
2015 | *ximg = xmalloc (sizeof (XImage) + palette_colors * sizeof (RGBQUAD)); | |
2016 | if (*ximg == NULL) | |
2017 | { | |
2018 | image_error ("Unable to allocate memory for XImage", Qnil, Qnil); | |
2019 | return 0; | |
2020 | } | |
2021 | ||
72af86bd AS |
2022 | header = &(*ximg)->info.bmiHeader; |
2023 | memset (&(*ximg)->info, 0, sizeof (BITMAPINFO)); | |
4ef0d4d0 KS |
2024 | header->biSize = sizeof (*header); |
2025 | header->biWidth = width; | |
2026 | header->biHeight = -height; /* negative indicates a top-down bitmap. */ | |
2027 | header->biPlanes = 1; | |
2028 | header->biBitCount = depth; | |
2029 | header->biCompression = BI_RGB; | |
2030 | header->biClrUsed = palette_colors; | |
2031 | ||
2032 | /* TODO: fill in palette. */ | |
2033 | if (depth == 1) | |
2034 | { | |
2035 | (*ximg)->info.bmiColors[0].rgbBlue = 0; | |
2036 | (*ximg)->info.bmiColors[0].rgbGreen = 0; | |
2037 | (*ximg)->info.bmiColors[0].rgbRed = 0; | |
2038 | (*ximg)->info.bmiColors[0].rgbReserved = 0; | |
2039 | (*ximg)->info.bmiColors[1].rgbBlue = 255; | |
2040 | (*ximg)->info.bmiColors[1].rgbGreen = 255; | |
2041 | (*ximg)->info.bmiColors[1].rgbRed = 255; | |
2042 | (*ximg)->info.bmiColors[1].rgbReserved = 0; | |
2043 | } | |
2044 | ||
2045 | hdc = get_frame_dc (f); | |
2046 | ||
2047 | /* Create a DIBSection and raster array for the bitmap, | |
2048 | and store its handle in *pixmap. */ | |
2049 | *pixmap = CreateDIBSection (hdc, &((*ximg)->info), | |
2050 | (depth < 16) ? DIB_PAL_COLORS : DIB_RGB_COLORS, | |
2e09fef1 EZ |
2051 | /* casting avoids a GCC warning */ |
2052 | (void **)&((*ximg)->data), NULL, 0); | |
4ef0d4d0 KS |
2053 | |
2054 | /* Realize display palette and garbage all frames. */ | |
2055 | release_frame_dc (f, hdc); | |
2056 | ||
2057 | if (*pixmap == NULL) | |
2058 | { | |
5fc9fdeb | 2059 | DWORD err = GetLastError (); |
4ef0d4d0 KS |
2060 | Lisp_Object errcode; |
2061 | /* All system errors are < 10000, so the following is safe. */ | |
2062 | XSETINT (errcode, (int) err); | |
2063 | image_error ("Unable to create bitmap, error code %d", errcode, Qnil); | |
2064 | x_destroy_x_image (*ximg); | |
2065 | return 0; | |
2066 | } | |
2067 | ||
2068 | return 1; | |
2069 | ||
2070 | #endif /* HAVE_NTGUI */ | |
2071 | ||
edfda783 | 2072 | #ifdef HAVE_NS |
ed3751c8 | 2073 | *pixmap = ns_image_for_XPM (width, height, depth); |
edfda783 AR |
2074 | if (*pixmap == 0) |
2075 | { | |
2076 | *ximg = NULL; | |
2077 | image_error ("Unable to allocate NSImage for XPM pixmap", Qnil, Qnil); | |
2078 | return 0; | |
2079 | } | |
2080 | *ximg = *pixmap; | |
2081 | return 1; | |
2082 | #endif | |
4ef0d4d0 KS |
2083 | } |
2084 | ||
2085 | ||
2086 | /* Destroy XImage XIMG. Free XIMG->data. */ | |
2087 | ||
2088 | static void | |
d3da34e0 | 2089 | x_destroy_x_image (XImagePtr ximg) |
4ef0d4d0 KS |
2090 | { |
2091 | xassert (interrupt_input_blocked); | |
2092 | if (ximg) | |
2093 | { | |
2094 | #ifdef HAVE_X_WINDOWS | |
2095 | xfree (ximg->data); | |
2096 | ximg->data = NULL; | |
2097 | XDestroyImage (ximg); | |
2098 | #endif /* HAVE_X_WINDOWS */ | |
2099 | #ifdef HAVE_NTGUI | |
2100 | /* Data will be freed by DestroyObject. */ | |
2101 | ximg->data = NULL; | |
2102 | xfree (ximg); | |
2103 | #endif /* HAVE_NTGUI */ | |
edfda783 | 2104 | #ifdef HAVE_NS |
ed3751c8 | 2105 | ns_release_object (ximg); |
edfda783 | 2106 | #endif /* HAVE_NS */ |
4ef0d4d0 KS |
2107 | } |
2108 | } | |
2109 | ||
2110 | ||
2111 | /* Put XImage XIMG into pixmap PIXMAP on frame F. WIDTH and HEIGHT | |
2112 | are width and height of both the image and pixmap. */ | |
2113 | ||
2114 | static void | |
d3da34e0 | 2115 | x_put_x_image (struct frame *f, XImagePtr ximg, Pixmap pixmap, int width, int height) |
4ef0d4d0 KS |
2116 | { |
2117 | #ifdef HAVE_X_WINDOWS | |
2118 | GC gc; | |
2119 | ||
2120 | xassert (interrupt_input_blocked); | |
2121 | gc = XCreateGC (FRAME_X_DISPLAY (f), pixmap, 0, NULL); | |
2122 | XPutImage (FRAME_X_DISPLAY (f), pixmap, gc, ximg, 0, 0, 0, 0, width, height); | |
2123 | XFreeGC (FRAME_X_DISPLAY (f), gc); | |
2124 | #endif /* HAVE_X_WINDOWS */ | |
2125 | ||
2126 | #ifdef HAVE_NTGUI | |
2127 | #if 0 /* I don't think this is necessary looking at where it is used. */ | |
2128 | HDC hdc = get_frame_dc (f); | |
2129 | SetDIBits (hdc, pixmap, 0, height, ximg->data, &(ximg->info), DIB_RGB_COLORS); | |
2130 | release_frame_dc (f, hdc); | |
2131 | #endif | |
2132 | #endif /* HAVE_NTGUI */ | |
2133 | ||
edfda783 AR |
2134 | #ifdef HAVE_NS |
2135 | xassert (ximg == pixmap); | |
ed3751c8 | 2136 | ns_retain_object (ximg); |
edfda783 | 2137 | #endif |
4ef0d4d0 KS |
2138 | } |
2139 | ||
2140 | \f | |
2141 | /*********************************************************************** | |
2142 | File Handling | |
b0c396f7 | 2143 | ***********************************************************************/ |
4ef0d4d0 | 2144 | |
f57e2426 | 2145 | static unsigned char *slurp_file (char *, int *); |
4ef0d4d0 KS |
2146 | |
2147 | ||
6678dc11 | 2148 | /* Find image file FILE. Look in data-directory/images, then |
022af124 KH |
2149 | x-bitmap-file-path. Value is the encoded full name of the file |
2150 | found, or nil if not found. */ | |
4ef0d4d0 | 2151 | |
c640aa9b | 2152 | Lisp_Object |
d3da34e0 | 2153 | x_find_image_file (Lisp_Object file) |
4ef0d4d0 KS |
2154 | { |
2155 | Lisp_Object file_found, search_path; | |
4ef0d4d0 KS |
2156 | int fd; |
2157 | ||
6678dc11 GM |
2158 | /* TODO I think this should use something like image-load-path |
2159 | instead. Unfortunately, that can contain non-string elements. */ | |
2160 | search_path = Fcons (Fexpand_file_name (build_string ("images"), | |
2161 | Vdata_directory), | |
2162 | Vx_bitmap_file_path); | |
4ef0d4d0 | 2163 | |
050b82f6 | 2164 | /* Try to find FILE in data-directory/images, then x-bitmap-file-path. */ |
4ef0d4d0 KS |
2165 | fd = openp (search_path, file, Qnil, &file_found, Qnil); |
2166 | ||
2167 | if (fd == -1) | |
2168 | file_found = Qnil; | |
2169 | else | |
022af124 KH |
2170 | { |
2171 | file_found = ENCODE_FILE (file_found); | |
2172 | close (fd); | |
2173 | } | |
4ef0d4d0 | 2174 | |
4ef0d4d0 KS |
2175 | return file_found; |
2176 | } | |
2177 | ||
2178 | ||
2179 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
2180 | with xmalloc holding FILE's contents. Value is null if an error | |
2181 | occurred. *SIZE is set to the size of the file. */ | |
2182 | ||
2183 | static unsigned char * | |
d3da34e0 | 2184 | slurp_file (char *file, int *size) |
4ef0d4d0 KS |
2185 | { |
2186 | FILE *fp = NULL; | |
2187 | unsigned char *buf = NULL; | |
2188 | struct stat st; | |
2189 | ||
2190 | if (stat (file, &st) == 0 | |
2191 | && (fp = fopen (file, "rb")) != NULL | |
fa8459a3 | 2192 | && (buf = (unsigned char *) xmalloc (st.st_size), |
4ef0d4d0 KS |
2193 | fread (buf, 1, st.st_size, fp) == st.st_size)) |
2194 | { | |
2195 | *size = st.st_size; | |
2196 | fclose (fp); | |
2197 | } | |
2198 | else | |
2199 | { | |
2200 | if (fp) | |
2201 | fclose (fp); | |
2202 | if (buf) | |
2203 | { | |
2204 | xfree (buf); | |
2205 | buf = NULL; | |
2206 | } | |
2207 | } | |
2208 | ||
2209 | return buf; | |
2210 | } | |
2211 | ||
2212 | ||
2213 | \f | |
4ef0d4d0 KS |
2214 | /*********************************************************************** |
2215 | XBM images | |
b0c396f7 | 2216 | ***********************************************************************/ |
4ef0d4d0 | 2217 | |
f57e2426 J |
2218 | static int xbm_scan (unsigned char **, unsigned char *, char *, int *); |
2219 | static int xbm_load (struct frame *f, struct image *img); | |
2220 | static int xbm_load_image (struct frame *f, struct image *img, | |
2221 | unsigned char *, unsigned char *); | |
2222 | static int xbm_image_p (Lisp_Object object); | |
2223 | static int xbm_read_bitmap_data (struct frame *f, | |
2224 | unsigned char *, unsigned char *, | |
b8dc29e9 | 2225 | int *, int *, char **, int); |
f57e2426 | 2226 | static int xbm_file_p (Lisp_Object); |
4ef0d4d0 KS |
2227 | |
2228 | ||
2229 | /* Indices of image specification fields in xbm_format, below. */ | |
2230 | ||
2231 | enum xbm_keyword_index | |
b0c396f7 JV |
2232 | { |
2233 | XBM_TYPE, | |
2234 | XBM_FILE, | |
2235 | XBM_WIDTH, | |
2236 | XBM_HEIGHT, | |
2237 | XBM_DATA, | |
2238 | XBM_FOREGROUND, | |
2239 | XBM_BACKGROUND, | |
2240 | XBM_ASCENT, | |
2241 | XBM_MARGIN, | |
2242 | XBM_RELIEF, | |
2243 | XBM_ALGORITHM, | |
2244 | XBM_HEURISTIC_MASK, | |
2245 | XBM_MASK, | |
2246 | XBM_LAST | |
2247 | }; | |
4ef0d4d0 KS |
2248 | |
2249 | /* Vector of image_keyword structures describing the format | |
2250 | of valid XBM image specifications. */ | |
2251 | ||
91433552 | 2252 | static const struct image_keyword xbm_format[XBM_LAST] = |
b0c396f7 JV |
2253 | { |
2254 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
2255 | {":file", IMAGE_STRING_VALUE, 0}, | |
2256 | {":width", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2257 | {":height", IMAGE_POSITIVE_INTEGER_VALUE, 0}, | |
2258 | {":data", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2259 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2260 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
2261 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
2262 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
2263 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
2264 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2265 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
2266 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0} | |
2267 | }; | |
4ef0d4d0 KS |
2268 | |
2269 | /* Structure describing the image type XBM. */ | |
2270 | ||
2271 | static struct image_type xbm_type = | |
b0c396f7 JV |
2272 | { |
2273 | &Qxbm, | |
2274 | xbm_image_p, | |
2275 | xbm_load, | |
2276 | x_clear_image, | |
2277 | NULL | |
2278 | }; | |
4ef0d4d0 KS |
2279 | |
2280 | /* Tokens returned from xbm_scan. */ | |
2281 | ||
2282 | enum xbm_token | |
b0c396f7 JV |
2283 | { |
2284 | XBM_TK_IDENT = 256, | |
2285 | XBM_TK_NUMBER | |
2286 | }; | |
4ef0d4d0 KS |
2287 | |
2288 | ||
2289 | /* Return non-zero if OBJECT is a valid XBM-type image specification. | |
2290 | A valid specification is a list starting with the symbol `image' | |
2291 | The rest of the list is a property list which must contain an | |
2292 | entry `:type xbm.. | |
2293 | ||
2294 | If the specification specifies a file to load, it must contain | |
2295 | an entry `:file FILENAME' where FILENAME is a string. | |
2296 | ||
2297 | If the specification is for a bitmap loaded from memory it must | |
2298 | contain `:width WIDTH', `:height HEIGHT', and `:data DATA', where | |
2299 | WIDTH and HEIGHT are integers > 0. DATA may be: | |
2300 | ||
2301 | 1. a string large enough to hold the bitmap data, i.e. it must | |
2302 | have a size >= (WIDTH + 7) / 8 * HEIGHT | |
2303 | ||
2304 | 2. a bool-vector of size >= WIDTH * HEIGHT | |
2305 | ||
2306 | 3. a vector of strings or bool-vectors, one for each line of the | |
2307 | bitmap. | |
2308 | ||
bbe6f2aa | 2309 | 4. a string containing an in-memory XBM file. WIDTH and HEIGHT |
4ef0d4d0 KS |
2310 | may not be specified in this case because they are defined in the |
2311 | XBM file. | |
2312 | ||
2313 | Both the file and data forms may contain the additional entries | |
2314 | `:background COLOR' and `:foreground COLOR'. If not present, | |
2315 | foreground and background of the frame on which the image is | |
2316 | displayed is used. */ | |
2317 | ||
2318 | static int | |
d3da34e0 | 2319 | xbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
2320 | { |
2321 | struct image_keyword kw[XBM_LAST]; | |
2322 | ||
72af86bd | 2323 | memcpy (kw, xbm_format, sizeof kw); |
4ef0d4d0 KS |
2324 | if (!parse_image_spec (object, kw, XBM_LAST, Qxbm)) |
2325 | return 0; | |
2326 | ||
2327 | xassert (EQ (kw[XBM_TYPE].value, Qxbm)); | |
2328 | ||
2329 | if (kw[XBM_FILE].count) | |
2330 | { | |
2331 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_DATA].count) | |
2332 | return 0; | |
2333 | } | |
2334 | else if (kw[XBM_DATA].count && xbm_file_p (kw[XBM_DATA].value)) | |
2335 | { | |
2336 | /* In-memory XBM file. */ | |
2337 | if (kw[XBM_WIDTH].count || kw[XBM_HEIGHT].count || kw[XBM_FILE].count) | |
2338 | return 0; | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | Lisp_Object data; | |
2343 | int width, height; | |
2344 | ||
2345 | /* Entries for `:width', `:height' and `:data' must be present. */ | |
2346 | if (!kw[XBM_WIDTH].count | |
2347 | || !kw[XBM_HEIGHT].count | |
2348 | || !kw[XBM_DATA].count) | |
2349 | return 0; | |
2350 | ||
2351 | data = kw[XBM_DATA].value; | |
2352 | width = XFASTINT (kw[XBM_WIDTH].value); | |
2353 | height = XFASTINT (kw[XBM_HEIGHT].value); | |
2354 | ||
2355 | /* Check type of data, and width and height against contents of | |
2356 | data. */ | |
2357 | if (VECTORP (data)) | |
2358 | { | |
2359 | int i; | |
2360 | ||
2361 | /* Number of elements of the vector must be >= height. */ | |
2362 | if (XVECTOR (data)->size < height) | |
2363 | return 0; | |
2364 | ||
2365 | /* Each string or bool-vector in data must be large enough | |
2366 | for one line of the image. */ | |
2367 | for (i = 0; i < height; ++i) | |
2368 | { | |
2369 | Lisp_Object elt = XVECTOR (data)->contents[i]; | |
2370 | ||
2371 | if (STRINGP (elt)) | |
2372 | { | |
2373 | if (SCHARS (elt) | |
2374 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR) | |
2375 | return 0; | |
2376 | } | |
2377 | else if (BOOL_VECTOR_P (elt)) | |
2378 | { | |
2379 | if (XBOOL_VECTOR (elt)->size < width) | |
2380 | return 0; | |
2381 | } | |
2382 | else | |
2383 | return 0; | |
2384 | } | |
2385 | } | |
2386 | else if (STRINGP (data)) | |
2387 | { | |
2388 | if (SCHARS (data) | |
2389 | < (width + BITS_PER_CHAR - 1) / BITS_PER_CHAR * height) | |
2390 | return 0; | |
2391 | } | |
2392 | else if (BOOL_VECTOR_P (data)) | |
2393 | { | |
2394 | if (XBOOL_VECTOR (data)->size < width * height) | |
2395 | return 0; | |
2396 | } | |
2397 | else | |
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | return 1; | |
2402 | } | |
2403 | ||
2404 | ||
2405 | /* Scan a bitmap file. FP is the stream to read from. Value is | |
2406 | either an enumerator from enum xbm_token, or a character for a | |
2407 | single-character token, or 0 at end of file. If scanning an | |
2408 | identifier, store the lexeme of the identifier in SVAL. If | |
2409 | scanning a number, store its value in *IVAL. */ | |
2410 | ||
2411 | static int | |
d3da34e0 | 2412 | xbm_scan (unsigned char **s, unsigned char *end, char *sval, int *ival) |
4ef0d4d0 KS |
2413 | { |
2414 | unsigned int c; | |
2415 | ||
2416 | loop: | |
2417 | ||
2418 | /* Skip white space. */ | |
2419 | while (*s < end && (c = *(*s)++, isspace (c))) | |
2420 | ; | |
2421 | ||
2422 | if (*s >= end) | |
2423 | c = 0; | |
2424 | else if (isdigit (c)) | |
2425 | { | |
2426 | int value = 0, digit; | |
2427 | ||
2428 | if (c == '0' && *s < end) | |
2429 | { | |
2430 | c = *(*s)++; | |
2431 | if (c == 'x' || c == 'X') | |
2432 | { | |
2433 | while (*s < end) | |
2434 | { | |
2435 | c = *(*s)++; | |
2436 | if (isdigit (c)) | |
2437 | digit = c - '0'; | |
2438 | else if (c >= 'a' && c <= 'f') | |
2439 | digit = c - 'a' + 10; | |
2440 | else if (c >= 'A' && c <= 'F') | |
2441 | digit = c - 'A' + 10; | |
2442 | else | |
2443 | break; | |
2444 | value = 16 * value + digit; | |
2445 | } | |
2446 | } | |
2447 | else if (isdigit (c)) | |
2448 | { | |
2449 | value = c - '0'; | |
2450 | while (*s < end | |
2451 | && (c = *(*s)++, isdigit (c))) | |
2452 | value = 8 * value + c - '0'; | |
2453 | } | |
2454 | } | |
2455 | else | |
2456 | { | |
2457 | value = c - '0'; | |
2458 | while (*s < end | |
2459 | && (c = *(*s)++, isdigit (c))) | |
2460 | value = 10 * value + c - '0'; | |
2461 | } | |
2462 | ||
2463 | if (*s < end) | |
2464 | *s = *s - 1; | |
2465 | *ival = value; | |
2466 | c = XBM_TK_NUMBER; | |
2467 | } | |
2468 | else if (isalpha (c) || c == '_') | |
2469 | { | |
2470 | *sval++ = c; | |
2471 | while (*s < end | |
2472 | && (c = *(*s)++, (isalnum (c) || c == '_'))) | |
2473 | *sval++ = c; | |
2474 | *sval = 0; | |
2475 | if (*s < end) | |
2476 | *s = *s - 1; | |
2477 | c = XBM_TK_IDENT; | |
2478 | } | |
2479 | else if (c == '/' && **s == '*') | |
2480 | { | |
2481 | /* C-style comment. */ | |
2482 | ++*s; | |
2483 | while (**s && (**s != '*' || *(*s + 1) != '/')) | |
2484 | ++*s; | |
2485 | if (**s) | |
2486 | { | |
2487 | *s += 2; | |
2488 | goto loop; | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | return c; | |
2493 | } | |
2494 | ||
2495 | #ifdef HAVE_NTGUI | |
2496 | ||
2497 | /* Create a Windows bitmap from X bitmap data. */ | |
2498 | static HBITMAP | |
2499 | w32_create_pixmap_from_bitmap_data (int width, int height, char *data) | |
2500 | { | |
2501 | static unsigned char swap_nibble[16] | |
2502 | = { 0x0, 0x8, 0x4, 0xc, /* 0000 1000 0100 1100 */ | |
2503 | 0x2, 0xa, 0x6, 0xe, /* 0010 1010 0110 1110 */ | |
2504 | 0x1, 0x9, 0x5, 0xd, /* 0001 1001 0101 1101 */ | |
2505 | 0x3, 0xb, 0x7, 0xf }; /* 0011 1011 0111 1111 */ | |
2506 | int i, j, w1, w2; | |
2507 | unsigned char *bits, *p; | |
2508 | HBITMAP bmp; | |
2509 | ||
2510 | w1 = (width + 7) / 8; /* nb of 8bits elt in X bitmap */ | |
2511 | w2 = ((width + 15) / 16) * 2; /* nb of 16bits elt in W32 bitmap */ | |
2512 | bits = (unsigned char *) alloca (height * w2); | |
72af86bd | 2513 | memset (bits, 0, height * w2); |
4ef0d4d0 KS |
2514 | for (i = 0; i < height; i++) |
2515 | { | |
2516 | p = bits + i*w2; | |
2517 | for (j = 0; j < w1; j++) | |
2518 | { | |
2519 | /* Bitswap XBM bytes to match how Windows does things. */ | |
2520 | unsigned char c = *data++; | |
2521 | *p++ = (unsigned char)((swap_nibble[c & 0xf] << 4) | |
2522 | | (swap_nibble[(c>>4) & 0xf])); | |
2523 | } | |
2524 | } | |
2525 | bmp = CreateBitmap (width, height, 1, 1, (char *) bits); | |
2526 | ||
2527 | return bmp; | |
2528 | } | |
2529 | ||
3046a84b | 2530 | static void |
7c3320d8 JB |
2531 | convert_mono_to_color_image (struct frame *f, struct image *img, |
2532 | COLORREF foreground, COLORREF background) | |
4ef0d4d0 KS |
2533 | { |
2534 | HDC hdc, old_img_dc, new_img_dc; | |
2535 | HGDIOBJ old_prev, new_prev; | |
2536 | HBITMAP new_pixmap; | |
2537 | ||
2538 | hdc = get_frame_dc (f); | |
2539 | old_img_dc = CreateCompatibleDC (hdc); | |
2540 | new_img_dc = CreateCompatibleDC (hdc); | |
2541 | new_pixmap = CreateCompatibleBitmap (hdc, img->width, img->height); | |
2542 | release_frame_dc (f, hdc); | |
2543 | old_prev = SelectObject (old_img_dc, img->pixmap); | |
2544 | new_prev = SelectObject (new_img_dc, new_pixmap); | |
44b1dc2e JR |
2545 | /* Windows convention for mono bitmaps is black = background, |
2546 | white = foreground. */ | |
2386b1f1 JR |
2547 | SetTextColor (new_img_dc, background); |
2548 | SetBkColor (new_img_dc, foreground); | |
4ef0d4d0 KS |
2549 | |
2550 | BitBlt (new_img_dc, 0, 0, img->width, img->height, old_img_dc, | |
2551 | 0, 0, SRCCOPY); | |
2552 | ||
2553 | SelectObject (old_img_dc, old_prev); | |
2554 | SelectObject (new_img_dc, new_prev); | |
2555 | DeleteDC (old_img_dc); | |
2556 | DeleteDC (new_img_dc); | |
2557 | DeleteObject (img->pixmap); | |
2558 | if (new_pixmap == 0) | |
2559 | fprintf (stderr, "Failed to convert image to color.\n"); | |
2560 | else | |
2561 | img->pixmap = new_pixmap; | |
2562 | } | |
2563 | ||
2564 | #define XBM_BIT_SHUFFLE(b) (~(b)) | |
2565 | ||
2566 | #else | |
2567 | ||
2568 | #define XBM_BIT_SHUFFLE(b) (b) | |
2569 | ||
2570 | #endif /* HAVE_NTGUI */ | |
2571 | ||
2572 | ||
2573 | static void | |
d3da34e0 JB |
2574 | Create_Pixmap_From_Bitmap_Data (struct frame *f, struct image *img, char *data, |
2575 | RGB_PIXEL_COLOR fg, RGB_PIXEL_COLOR bg, | |
2576 | int non_default_colors) | |
4ef0d4d0 KS |
2577 | { |
2578 | #ifdef HAVE_NTGUI | |
2579 | img->pixmap | |
2580 | = w32_create_pixmap_from_bitmap_data (img->width, img->height, data); | |
2581 | ||
2582 | /* If colors were specified, transfer the bitmap to a color one. */ | |
2583 | if (non_default_colors) | |
2584 | convert_mono_to_color_image (f, img, fg, bg); | |
edfda783 AR |
2585 | |
2586 | #elif defined (HAVE_NS) | |
ed3751c8 | 2587 | img->pixmap = ns_image_from_XBM (data, img->width, img->height); |
edfda783 | 2588 | |
4ef0d4d0 KS |
2589 | #else |
2590 | img->pixmap | |
2591 | = XCreatePixmapFromBitmapData (FRAME_X_DISPLAY (f), | |
2592 | FRAME_X_WINDOW (f), | |
2593 | data, | |
2594 | img->width, img->height, | |
2595 | fg, bg, | |
2596 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
edfda783 | 2597 | #endif /* !HAVE_NTGUI && !HAVE_NS */ |
4ef0d4d0 KS |
2598 | } |
2599 | ||
2600 | ||
2601 | ||
2602 | /* Replacement for XReadBitmapFileData which isn't available under old | |
2603 | X versions. CONTENTS is a pointer to a buffer to parse; END is the | |
2604 | buffer's end. Set *WIDTH and *HEIGHT to the width and height of | |
2605 | the image. Return in *DATA the bitmap data allocated with xmalloc. | |
2606 | Value is non-zero if successful. DATA null means just test if | |
ce959360 CY |
2607 | CONTENTS looks like an in-memory XBM file. If INHIBIT_IMAGE_ERROR |
2608 | is non-zero, inhibit the call to image_error when the image size is | |
2609 | invalid (the bitmap remains unread). */ | |
4ef0d4d0 KS |
2610 | |
2611 | static int | |
d3da34e0 | 2612 | xbm_read_bitmap_data (struct frame *f, unsigned char *contents, unsigned char *end, |
b8dc29e9 | 2613 | int *width, int *height, char **data, |
d3da34e0 | 2614 | int inhibit_image_error) |
4ef0d4d0 KS |
2615 | { |
2616 | unsigned char *s = contents; | |
2617 | char buffer[BUFSIZ]; | |
2618 | int padding_p = 0; | |
2619 | int v10 = 0; | |
2620 | int bytes_per_line, i, nbytes; | |
b8dc29e9 | 2621 | char *p; |
4ef0d4d0 KS |
2622 | int value; |
2623 | int LA1; | |
2624 | ||
b0c396f7 JV |
2625 | #define match() \ |
2626 | LA1 = xbm_scan (&s, end, buffer, &value) | |
4ef0d4d0 | 2627 | |
b0c396f7 JV |
2628 | #define expect(TOKEN) \ |
2629 | if (LA1 != (TOKEN)) \ | |
2630 | goto failure; \ | |
2631 | else \ | |
2632 | match () | |
4ef0d4d0 KS |
2633 | |
2634 | #define expect_ident(IDENT) \ | |
b0c396f7 JV |
2635 | if (LA1 == XBM_TK_IDENT && strcmp (buffer, (IDENT)) == 0) \ |
2636 | match (); \ | |
2637 | else \ | |
2638 | goto failure | |
4ef0d4d0 KS |
2639 | |
2640 | *width = *height = -1; | |
2641 | if (data) | |
2642 | *data = NULL; | |
2643 | LA1 = xbm_scan (&s, end, buffer, &value); | |
2644 | ||
2645 | /* Parse defines for width, height and hot-spots. */ | |
2646 | while (LA1 == '#') | |
2647 | { | |
2648 | match (); | |
2649 | expect_ident ("define"); | |
2650 | expect (XBM_TK_IDENT); | |
2651 | ||
431feaf6 | 2652 | if (LA1 == XBM_TK_NUMBER) |
4ef0d4d0 KS |
2653 | { |
2654 | char *p = strrchr (buffer, '_'); | |
2655 | p = p ? p + 1 : buffer; | |
2656 | if (strcmp (p, "width") == 0) | |
2657 | *width = value; | |
2658 | else if (strcmp (p, "height") == 0) | |
2659 | *height = value; | |
2660 | } | |
2661 | expect (XBM_TK_NUMBER); | |
2662 | } | |
2663 | ||
f1f25b99 | 2664 | if (!check_image_size (f, *width, *height)) |
10ea2b82 | 2665 | { |
ce959360 CY |
2666 | if (!inhibit_image_error) |
2667 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
10ea2b82 JR |
2668 | goto failure; |
2669 | } | |
4ef0d4d0 KS |
2670 | else if (data == NULL) |
2671 | goto success; | |
2672 | ||
2673 | /* Parse bits. Must start with `static'. */ | |
2674 | expect_ident ("static"); | |
2675 | if (LA1 == XBM_TK_IDENT) | |
2676 | { | |
2677 | if (strcmp (buffer, "unsigned") == 0) | |
2678 | { | |
2679 | match (); | |
2680 | expect_ident ("char"); | |
2681 | } | |
2682 | else if (strcmp (buffer, "short") == 0) | |
2683 | { | |
2684 | match (); | |
2685 | v10 = 1; | |
2686 | if (*width % 16 && *width % 16 < 9) | |
2687 | padding_p = 1; | |
2688 | } | |
2689 | else if (strcmp (buffer, "char") == 0) | |
2690 | match (); | |
2691 | else | |
2692 | goto failure; | |
2693 | } | |
2694 | else | |
2695 | goto failure; | |
2696 | ||
2697 | expect (XBM_TK_IDENT); | |
2698 | expect ('['); | |
2699 | expect (']'); | |
2700 | expect ('='); | |
2701 | expect ('{'); | |
2702 | ||
2703 | bytes_per_line = (*width + 7) / 8 + padding_p; | |
2704 | nbytes = bytes_per_line * *height; | |
b8dc29e9 | 2705 | p = *data = (char *) xmalloc (nbytes); |
4ef0d4d0 KS |
2706 | |
2707 | if (v10) | |
2708 | { | |
2709 | for (i = 0; i < nbytes; i += 2) | |
2710 | { | |
2711 | int val = value; | |
2712 | expect (XBM_TK_NUMBER); | |
2713 | ||
2714 | *p++ = XBM_BIT_SHUFFLE (val); | |
2715 | if (!padding_p || ((i + 2) % bytes_per_line)) | |
2716 | *p++ = XBM_BIT_SHUFFLE (value >> 8); | |
2717 | ||
2718 | if (LA1 == ',' || LA1 == '}') | |
2719 | match (); | |
2720 | else | |
2721 | goto failure; | |
2722 | } | |
2723 | } | |
2724 | else | |
2725 | { | |
2726 | for (i = 0; i < nbytes; ++i) | |
2727 | { | |
2728 | int val = value; | |
2729 | expect (XBM_TK_NUMBER); | |
2730 | ||
2731 | *p++ = XBM_BIT_SHUFFLE (val); | |
2732 | ||
2733 | if (LA1 == ',' || LA1 == '}') | |
2734 | match (); | |
2735 | else | |
2736 | goto failure; | |
2737 | } | |
2738 | } | |
2739 | ||
2740 | success: | |
2741 | return 1; | |
2742 | ||
2743 | failure: | |
2744 | ||
2745 | if (data && *data) | |
2746 | { | |
2747 | xfree (*data); | |
2748 | *data = NULL; | |
2749 | } | |
2750 | return 0; | |
2751 | ||
2752 | #undef match | |
2753 | #undef expect | |
2754 | #undef expect_ident | |
2755 | } | |
2756 | ||
2757 | ||
2758 | /* Load XBM image IMG which will be displayed on frame F from buffer | |
2759 | CONTENTS. END is the end of the buffer. Value is non-zero if | |
2760 | successful. */ | |
2761 | ||
2762 | static int | |
d3da34e0 JB |
2763 | xbm_load_image (struct frame *f, struct image *img, unsigned char *contents, |
2764 | unsigned char *end) | |
4ef0d4d0 KS |
2765 | { |
2766 | int rc; | |
b8dc29e9 | 2767 | char *data; |
4ef0d4d0 KS |
2768 | int success_p = 0; |
2769 | ||
ce959360 CY |
2770 | rc = xbm_read_bitmap_data (f, contents, end, &img->width, &img->height, |
2771 | &data, 0); | |
4ef0d4d0 KS |
2772 | if (rc) |
2773 | { | |
2774 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2775 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2776 | int non_default_colors = 0; | |
2777 | Lisp_Object value; | |
2778 | ||
2779 | xassert (img->width > 0 && img->height > 0); | |
2780 | ||
2781 | /* Get foreground and background colors, maybe allocate colors. */ | |
2782 | value = image_spec_value (img->spec, QCforeground, NULL); | |
2783 | if (!NILP (value)) | |
2784 | { | |
2785 | foreground = x_alloc_image_color (f, img, value, foreground); | |
2786 | non_default_colors = 1; | |
2787 | } | |
2788 | value = image_spec_value (img->spec, QCbackground, NULL); | |
2789 | if (!NILP (value)) | |
2790 | { | |
2791 | background = x_alloc_image_color (f, img, value, background); | |
2792 | img->background = background; | |
2793 | img->background_valid = 1; | |
2794 | non_default_colors = 1; | |
2795 | } | |
2796 | ||
1f026899 | 2797 | Create_Pixmap_From_Bitmap_Data (f, img, data, |
4ef0d4d0 KS |
2798 | foreground, background, |
2799 | non_default_colors); | |
2800 | xfree (data); | |
2801 | ||
2802 | if (img->pixmap == NO_PIXMAP) | |
2803 | { | |
2804 | x_clear_image (f, img); | |
2805 | image_error ("Unable to create X pixmap for `%s'", img->spec, Qnil); | |
2806 | } | |
2807 | else | |
2808 | success_p = 1; | |
2809 | } | |
2810 | else | |
2811 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
2812 | ||
2813 | return success_p; | |
2814 | } | |
2815 | ||
2816 | ||
2817 | /* Value is non-zero if DATA looks like an in-memory XBM file. */ | |
2818 | ||
2819 | static int | |
d3da34e0 | 2820 | xbm_file_p (Lisp_Object data) |
4ef0d4d0 KS |
2821 | { |
2822 | int w, h; | |
2823 | return (STRINGP (data) | |
f1f25b99 | 2824 | && xbm_read_bitmap_data (NULL, SDATA (data), |
ce959360 CY |
2825 | (SDATA (data) + SBYTES (data)), |
2826 | &w, &h, NULL, 1)); | |
4ef0d4d0 KS |
2827 | } |
2828 | ||
2829 | ||
2830 | /* Fill image IMG which is used on frame F with pixmap data. Value is | |
2831 | non-zero if successful. */ | |
2832 | ||
2833 | static int | |
d3da34e0 | 2834 | xbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
2835 | { |
2836 | int success_p = 0; | |
2837 | Lisp_Object file_name; | |
2838 | ||
2839 | xassert (xbm_image_p (img->spec)); | |
2840 | ||
2841 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
2842 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
2843 | if (STRINGP (file_name)) | |
2844 | { | |
2845 | Lisp_Object file; | |
2846 | unsigned char *contents; | |
2847 | int size; | |
4ef0d4d0 KS |
2848 | |
2849 | file = x_find_image_file (file_name); | |
4ef0d4d0 KS |
2850 | if (!STRINGP (file)) |
2851 | { | |
2852 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4ef0d4d0 KS |
2853 | return 0; |
2854 | } | |
2855 | ||
42a5b22f | 2856 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
2857 | if (contents == NULL) |
2858 | { | |
2859 | image_error ("Error loading XBM image `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
2860 | return 0; |
2861 | } | |
2862 | ||
2863 | success_p = xbm_load_image (f, img, contents, contents + size); | |
4ef0d4d0 KS |
2864 | } |
2865 | else | |
2866 | { | |
2867 | struct image_keyword fmt[XBM_LAST]; | |
2868 | Lisp_Object data; | |
2869 | unsigned long foreground = FRAME_FOREGROUND_PIXEL (f); | |
2870 | unsigned long background = FRAME_BACKGROUND_PIXEL (f); | |
2871 | int non_default_colors = 0; | |
2872 | char *bits; | |
2873 | int parsed_p; | |
2874 | int in_memory_file_p = 0; | |
2875 | ||
2876 | /* See if data looks like an in-memory XBM file. */ | |
2877 | data = image_spec_value (img->spec, QCdata, NULL); | |
2878 | in_memory_file_p = xbm_file_p (data); | |
2879 | ||
2880 | /* Parse the image specification. */ | |
72af86bd | 2881 | memcpy (fmt, xbm_format, sizeof fmt); |
4ef0d4d0 KS |
2882 | parsed_p = parse_image_spec (img->spec, fmt, XBM_LAST, Qxbm); |
2883 | xassert (parsed_p); | |
2884 | ||
2885 | /* Get specified width, and height. */ | |
2886 | if (!in_memory_file_p) | |
2887 | { | |
2888 | img->width = XFASTINT (fmt[XBM_WIDTH].value); | |
2889 | img->height = XFASTINT (fmt[XBM_HEIGHT].value); | |
2890 | xassert (img->width > 0 && img->height > 0); | |
2891 | } | |
2892 | ||
2893 | /* Get foreground and background colors, maybe allocate colors. */ | |
2894 | if (fmt[XBM_FOREGROUND].count | |
2895 | && STRINGP (fmt[XBM_FOREGROUND].value)) | |
2896 | { | |
2897 | foreground = x_alloc_image_color (f, img, fmt[XBM_FOREGROUND].value, | |
2898 | foreground); | |
2899 | non_default_colors = 1; | |
2900 | } | |
2901 | ||
2902 | if (fmt[XBM_BACKGROUND].count | |
2903 | && STRINGP (fmt[XBM_BACKGROUND].value)) | |
2904 | { | |
2905 | background = x_alloc_image_color (f, img, fmt[XBM_BACKGROUND].value, | |
2906 | background); | |
2907 | non_default_colors = 1; | |
2908 | } | |
2909 | ||
2910 | if (in_memory_file_p) | |
2911 | success_p = xbm_load_image (f, img, SDATA (data), | |
2912 | (SDATA (data) | |
2913 | + SBYTES (data))); | |
2914 | else | |
2915 | { | |
2916 | if (VECTORP (data)) | |
2917 | { | |
2918 | int i; | |
2919 | char *p; | |
2920 | int nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR; | |
2921 | ||
2922 | p = bits = (char *) alloca (nbytes * img->height); | |
2923 | for (i = 0; i < img->height; ++i, p += nbytes) | |
2924 | { | |
2925 | Lisp_Object line = XVECTOR (data)->contents[i]; | |
2926 | if (STRINGP (line)) | |
72af86bd | 2927 | memcpy (p, SDATA (line), nbytes); |
4ef0d4d0 | 2928 | else |
72af86bd | 2929 | memcpy (p, XBOOL_VECTOR (line)->data, nbytes); |
4ef0d4d0 KS |
2930 | } |
2931 | } | |
2932 | else if (STRINGP (data)) | |
42a5b22f | 2933 | bits = SSDATA (data); |
4ef0d4d0 | 2934 | else |
b8dc29e9 | 2935 | bits = (char *) XBOOL_VECTOR (data)->data; |
4ef0d4d0 | 2936 | |
44b1dc2e JR |
2937 | #ifdef WINDOWSNT |
2938 | { | |
2939 | char *invertedBits; | |
2940 | int nbytes, i; | |
2941 | /* Windows mono bitmaps are reversed compared with X. */ | |
2942 | invertedBits = bits; | |
285d07e2 | 2943 | nbytes = (img->width + BITS_PER_CHAR - 1) / BITS_PER_CHAR |
44b1dc2e | 2944 | * img->height; |
ed3751c8 | 2945 | bits = (char *) alloca (nbytes); |
44b1dc2e JR |
2946 | for (i = 0; i < nbytes; i++) |
2947 | bits[i] = XBM_BIT_SHUFFLE (invertedBits[i]); | |
2948 | } | |
2949 | #endif | |
4ef0d4d0 KS |
2950 | /* Create the pixmap. */ |
2951 | ||
2952 | Create_Pixmap_From_Bitmap_Data (f, img, bits, | |
2953 | foreground, background, | |
2954 | non_default_colors); | |
2955 | if (img->pixmap) | |
2956 | success_p = 1; | |
2957 | else | |
2958 | { | |
2959 | image_error ("Unable to create pixmap for XBM image `%s'", | |
2960 | img->spec, Qnil); | |
2961 | x_clear_image (f, img); | |
2962 | } | |
2963 | } | |
2964 | } | |
2965 | ||
2966 | return success_p; | |
2967 | } | |
2968 | ||
2969 | ||
2970 | \f | |
2971 | /*********************************************************************** | |
2972 | XPM images | |
b0c396f7 | 2973 | ***********************************************************************/ |
4ef0d4d0 | 2974 | |
9e2a2647 | 2975 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 | 2976 | |
f57e2426 J |
2977 | static int xpm_image_p (Lisp_Object object); |
2978 | static int xpm_load (struct frame *f, struct image *img); | |
2979 | static int xpm_valid_color_symbols_p (Lisp_Object); | |
4ef0d4d0 | 2980 | |
9e2a2647 | 2981 | #endif /* HAVE_XPM || HAVE_NS */ |
ea1aaa6f ST |
2982 | |
2983 | #ifdef HAVE_XPM | |
4ef0d4d0 KS |
2984 | #ifdef HAVE_NTGUI |
2985 | /* Indicate to xpm.h that we don't have Xlib. */ | |
2986 | #define FOR_MSW | |
2987 | /* simx.h in xpm defines XColor and XImage differently than Emacs. */ | |
279d3293 | 2988 | /* It also defines Display the same way as Emacs, but gcc 3.3 still barfs. */ |
4ef0d4d0 KS |
2989 | #define XColor xpm_XColor |
2990 | #define XImage xpm_XImage | |
279d3293 | 2991 | #define Display xpm_Display |
4ef0d4d0 KS |
2992 | #define PIXEL_ALREADY_TYPEDEFED |
2993 | #include "X11/xpm.h" | |
2994 | #undef FOR_MSW | |
2995 | #undef XColor | |
2996 | #undef XImage | |
279d3293 | 2997 | #undef Display |
4ef0d4d0 KS |
2998 | #undef PIXEL_ALREADY_TYPEDEFED |
2999 | #else | |
3000 | #include "X11/xpm.h" | |
3001 | #endif /* HAVE_NTGUI */ | |
ea1aaa6f | 3002 | #endif /* HAVE_XPM */ |
4ef0d4d0 | 3003 | |
9e2a2647 | 3004 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
4ef0d4d0 KS |
3005 | /* The symbol `xpm' identifying XPM-format images. */ |
3006 | ||
3007 | Lisp_Object Qxpm; | |
3008 | ||
3009 | /* Indices of image specification fields in xpm_format, below. */ | |
3010 | ||
3011 | enum xpm_keyword_index | |
b0c396f7 JV |
3012 | { |
3013 | XPM_TYPE, | |
3014 | XPM_FILE, | |
3015 | XPM_DATA, | |
3016 | XPM_ASCENT, | |
3017 | XPM_MARGIN, | |
3018 | XPM_RELIEF, | |
3019 | XPM_ALGORITHM, | |
3020 | XPM_HEURISTIC_MASK, | |
3021 | XPM_MASK, | |
3022 | XPM_COLOR_SYMBOLS, | |
3023 | XPM_BACKGROUND, | |
3024 | XPM_LAST | |
3025 | }; | |
4ef0d4d0 KS |
3026 | |
3027 | /* Vector of image_keyword structures describing the format | |
3028 | of valid XPM image specifications. */ | |
3029 | ||
91433552 | 3030 | static const struct image_keyword xpm_format[XPM_LAST] = |
b0c396f7 JV |
3031 | { |
3032 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
3033 | {":file", IMAGE_STRING_VALUE, 0}, | |
3034 | {":data", IMAGE_STRING_VALUE, 0}, | |
3035 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
3036 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
3037 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
3038 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3039 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3040 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3041 | {":color-symbols", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
3042 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
3043 | }; | |
4ef0d4d0 KS |
3044 | |
3045 | /* Structure describing the image type XPM. */ | |
3046 | ||
3047 | static struct image_type xpm_type = | |
b0c396f7 JV |
3048 | { |
3049 | &Qxpm, | |
3050 | xpm_image_p, | |
3051 | xpm_load, | |
3052 | x_clear_image, | |
3053 | NULL | |
3054 | }; | |
4ef0d4d0 KS |
3055 | |
3056 | #ifdef HAVE_X_WINDOWS | |
3057 | ||
3058 | /* Define ALLOC_XPM_COLORS if we can use Emacs' own color allocation | |
3059 | functions for allocating image colors. Our own functions handle | |
3060 | color allocation failures more gracefully than the ones on the XPM | |
3061 | lib. */ | |
3062 | ||
3063 | #if defined XpmAllocColor && defined XpmFreeColors && defined XpmColorClosure | |
3064 | #define ALLOC_XPM_COLORS | |
3065 | #endif | |
3066 | #endif /* HAVE_X_WINDOWS */ | |
3067 | ||
3068 | #ifdef ALLOC_XPM_COLORS | |
3069 | ||
f57e2426 J |
3070 | static void xpm_init_color_cache (struct frame *, XpmAttributes *); |
3071 | static void xpm_free_color_cache (void); | |
3072 | static int xpm_lookup_color (struct frame *, char *, XColor *); | |
3073 | static int xpm_color_bucket (char *); | |
3074 | static struct xpm_cached_color *xpm_cache_color (struct frame *, char *, | |
3075 | XColor *, int); | |
4ef0d4d0 KS |
3076 | |
3077 | /* An entry in a hash table used to cache color definitions of named | |
3078 | colors. This cache is necessary to speed up XPM image loading in | |
3079 | case we do color allocations ourselves. Without it, we would need | |
3080 | a call to XParseColor per pixel in the image. */ | |
3081 | ||
3082 | struct xpm_cached_color | |
3083 | { | |
3084 | /* Next in collision chain. */ | |
3085 | struct xpm_cached_color *next; | |
3086 | ||
3087 | /* Color definition (RGB and pixel color). */ | |
3088 | XColor color; | |
3089 | ||
3090 | /* Color name. */ | |
3091 | char name[1]; | |
3092 | }; | |
3093 | ||
3094 | /* The hash table used for the color cache, and its bucket vector | |
3095 | size. */ | |
3096 | ||
3097 | #define XPM_COLOR_CACHE_BUCKETS 1001 | |
3098 | struct xpm_cached_color **xpm_color_cache; | |
3099 | ||
3100 | /* Initialize the color cache. */ | |
3101 | ||
3102 | static void | |
d3da34e0 | 3103 | xpm_init_color_cache (struct frame *f, XpmAttributes *attrs) |
4ef0d4d0 KS |
3104 | { |
3105 | size_t nbytes = XPM_COLOR_CACHE_BUCKETS * sizeof *xpm_color_cache; | |
3106 | xpm_color_cache = (struct xpm_cached_color **) xmalloc (nbytes); | |
3107 | memset (xpm_color_cache, 0, nbytes); | |
3108 | init_color_table (); | |
3109 | ||
3110 | if (attrs->valuemask & XpmColorSymbols) | |
3111 | { | |
3112 | int i; | |
3113 | XColor color; | |
3114 | ||
3115 | for (i = 0; i < attrs->numsymbols; ++i) | |
3116 | if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3117 | attrs->colorsymbols[i].value, &color)) | |
3118 | { | |
3119 | color.pixel = lookup_rgb_color (f, color.red, color.green, | |
3120 | color.blue); | |
3121 | xpm_cache_color (f, attrs->colorsymbols[i].name, &color, -1); | |
3122 | } | |
3123 | } | |
3124 | } | |
3125 | ||
3126 | /* Free the color cache. */ | |
3127 | ||
3128 | static void | |
d3da34e0 | 3129 | xpm_free_color_cache (void) |
4ef0d4d0 KS |
3130 | { |
3131 | struct xpm_cached_color *p, *next; | |
3132 | int i; | |
3133 | ||
3134 | for (i = 0; i < XPM_COLOR_CACHE_BUCKETS; ++i) | |
3135 | for (p = xpm_color_cache[i]; p; p = next) | |
3136 | { | |
3137 | next = p->next; | |
3138 | xfree (p); | |
3139 | } | |
3140 | ||
3141 | xfree (xpm_color_cache); | |
3142 | xpm_color_cache = NULL; | |
3143 | free_color_table (); | |
3144 | } | |
3145 | ||
3146 | /* Return the bucket index for color named COLOR_NAME in the color | |
3147 | cache. */ | |
3148 | ||
3149 | static int | |
d3da34e0 | 3150 | xpm_color_bucket (char *color_name) |
4ef0d4d0 KS |
3151 | { |
3152 | unsigned h = 0; | |
3153 | char *s; | |
3154 | ||
3155 | for (s = color_name; *s; ++s) | |
3156 | h = (h << 2) ^ *s; | |
3157 | return h %= XPM_COLOR_CACHE_BUCKETS; | |
3158 | } | |
3159 | ||
3160 | ||
3161 | /* On frame F, cache values COLOR for color with name COLOR_NAME. | |
3162 | BUCKET, if >= 0, is a precomputed bucket index. Value is the cache | |
3163 | entry added. */ | |
3164 | ||
3165 | static struct xpm_cached_color * | |
d3da34e0 | 3166 | xpm_cache_color (struct frame *f, char *color_name, XColor *color, int bucket) |
4ef0d4d0 KS |
3167 | { |
3168 | size_t nbytes; | |
3169 | struct xpm_cached_color *p; | |
3170 | ||
3171 | if (bucket < 0) | |
3172 | bucket = xpm_color_bucket (color_name); | |
3173 | ||
3174 | nbytes = sizeof *p + strlen (color_name); | |
3175 | p = (struct xpm_cached_color *) xmalloc (nbytes); | |
3176 | strcpy (p->name, color_name); | |
3177 | p->color = *color; | |
3178 | p->next = xpm_color_cache[bucket]; | |
3179 | xpm_color_cache[bucket] = p; | |
3180 | return p; | |
3181 | } | |
3182 | ||
3183 | /* Look up color COLOR_NAME for frame F in the color cache. If found, | |
3184 | return the cached definition in *COLOR. Otherwise, make a new | |
3185 | entry in the cache and allocate the color. Value is zero if color | |
3186 | allocation failed. */ | |
3187 | ||
3188 | static int | |
d3da34e0 | 3189 | xpm_lookup_color (struct frame *f, char *color_name, XColor *color) |
4ef0d4d0 KS |
3190 | { |
3191 | struct xpm_cached_color *p; | |
3192 | int h = xpm_color_bucket (color_name); | |
3193 | ||
3194 | for (p = xpm_color_cache[h]; p; p = p->next) | |
3195 | if (strcmp (p->name, color_name) == 0) | |
3196 | break; | |
3197 | ||
3198 | if (p != NULL) | |
3199 | *color = p->color; | |
3200 | else if (XParseColor (FRAME_X_DISPLAY (f), FRAME_X_COLORMAP (f), | |
3201 | color_name, color)) | |
3202 | { | |
3203 | color->pixel = lookup_rgb_color (f, color->red, color->green, | |
3204 | color->blue); | |
3205 | p = xpm_cache_color (f, color_name, color, h); | |
3206 | } | |
3207 | /* You get `opaque' at least from ImageMagick converting pbm to xpm | |
3208 | with transparency, and it's useful. */ | |
3209 | else if (strcmp ("opaque", color_name) == 0) | |
3210 | { | |
72af86bd | 3211 | memset (color, 0, sizeof (XColor)); /* Is this necessary/correct? */ |
4ef0d4d0 KS |
3212 | color->pixel = FRAME_FOREGROUND_PIXEL (f); |
3213 | p = xpm_cache_color (f, color_name, color, h); | |
3214 | } | |
3215 | ||
3216 | return p != NULL; | |
3217 | } | |
3218 | ||
3219 | ||
3220 | /* Callback for allocating color COLOR_NAME. Called from the XPM lib. | |
3221 | CLOSURE is a pointer to the frame on which we allocate the | |
3222 | color. Return in *COLOR the allocated color. Value is non-zero | |
3223 | if successful. */ | |
3224 | ||
3225 | static int | |
d3da34e0 JB |
3226 | xpm_alloc_color (Display *dpy, Colormap cmap, char *color_name, XColor *color, |
3227 | void *closure) | |
4ef0d4d0 KS |
3228 | { |
3229 | return xpm_lookup_color ((struct frame *) closure, color_name, color); | |
3230 | } | |
3231 | ||
3232 | ||
3233 | /* Callback for freeing NPIXELS colors contained in PIXELS. CLOSURE | |
3234 | is a pointer to the frame on which we allocate the color. Value is | |
3235 | non-zero if successful. */ | |
3236 | ||
3237 | static int | |
d3da34e0 | 3238 | xpm_free_colors (Display *dpy, Colormap cmap, Pixel *pixels, int npixels, void *closure) |
4ef0d4d0 KS |
3239 | { |
3240 | return 1; | |
3241 | } | |
3242 | ||
3243 | #endif /* ALLOC_XPM_COLORS */ | |
3244 | ||
3245 | ||
3246 | #ifdef HAVE_NTGUI | |
3247 | ||
3248 | /* XPM library details. */ | |
3249 | ||
14beddf4 CY |
3250 | DEF_IMGLIB_FN (void, XpmFreeAttributes, (XpmAttributes *)); |
3251 | DEF_IMGLIB_FN (int, XpmCreateImageFromBuffer, (Display *, char *, xpm_XImage **, | |
850690cc | 3252 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3253 | DEF_IMGLIB_FN (int, XpmReadFileToImage, (Display *, char *, xpm_XImage **, |
850690cc | 3254 | xpm_XImage **, XpmAttributes *)); |
14beddf4 | 3255 | DEF_IMGLIB_FN (void, XImageFree, (xpm_XImage *)); |
4ef0d4d0 | 3256 | |
4ef0d4d0 | 3257 | static int |
0855eb52 | 3258 | init_xpm_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
3259 | { |
3260 | HMODULE library; | |
3261 | ||
0855eb52 | 3262 | if (!(library = w32_delayed_load (libraries, Qxpm))) |
4ef0d4d0 KS |
3263 | return 0; |
3264 | ||
3265 | LOAD_IMGLIB_FN (library, XpmFreeAttributes); | |
3266 | LOAD_IMGLIB_FN (library, XpmCreateImageFromBuffer); | |
3267 | LOAD_IMGLIB_FN (library, XpmReadFileToImage); | |
3268 | LOAD_IMGLIB_FN (library, XImageFree); | |
3269 | return 1; | |
3270 | } | |
3271 | ||
3272 | #endif /* HAVE_NTGUI */ | |
3273 | ||
3274 | ||
3275 | /* Value is non-zero if COLOR_SYMBOLS is a valid color symbols list | |
3276 | for XPM images. Such a list must consist of conses whose car and | |
3277 | cdr are strings. */ | |
3278 | ||
3279 | static int | |
d3da34e0 | 3280 | xpm_valid_color_symbols_p (Lisp_Object color_symbols) |
4ef0d4d0 KS |
3281 | { |
3282 | while (CONSP (color_symbols)) | |
3283 | { | |
3284 | Lisp_Object sym = XCAR (color_symbols); | |
3285 | if (!CONSP (sym) | |
3286 | || !STRINGP (XCAR (sym)) | |
3287 | || !STRINGP (XCDR (sym))) | |
3288 | break; | |
3289 | color_symbols = XCDR (color_symbols); | |
3290 | } | |
3291 | ||
3292 | return NILP (color_symbols); | |
3293 | } | |
3294 | ||
3295 | ||
3296 | /* Value is non-zero if OBJECT is a valid XPM image specification. */ | |
3297 | ||
3298 | static int | |
d3da34e0 | 3299 | xpm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
3300 | { |
3301 | struct image_keyword fmt[XPM_LAST]; | |
72af86bd | 3302 | memcpy (fmt, xpm_format, sizeof fmt); |
4ef0d4d0 KS |
3303 | return (parse_image_spec (object, fmt, XPM_LAST, Qxpm) |
3304 | /* Either `:file' or `:data' must be present. */ | |
3305 | && fmt[XPM_FILE].count + fmt[XPM_DATA].count == 1 | |
3306 | /* Either no `:color-symbols' or it's a list of conses | |
3307 | whose car and cdr are strings. */ | |
3308 | && (fmt[XPM_COLOR_SYMBOLS].count == 0 | |
3309 | || xpm_valid_color_symbols_p (fmt[XPM_COLOR_SYMBOLS].value))); | |
3310 | } | |
3311 | ||
9e2a2647 | 3312 | #endif /* HAVE_XPM || HAVE_NS */ |
4ef0d4d0 | 3313 | |
786a43d6 CY |
3314 | #if defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) |
3315 | int | |
ef1b0ba7 | 3316 | x_create_bitmap_from_xpm_data (struct frame *f, const char **bits) |
786a43d6 CY |
3317 | { |
3318 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
3319 | int id, rc; | |
3320 | XpmAttributes attrs; | |
3321 | Pixmap bitmap, mask; | |
3322 | ||
72af86bd | 3323 | memset (&attrs, 0, sizeof attrs); |
786a43d6 | 3324 | |
54188d8f CY |
3325 | attrs.visual = FRAME_X_VISUAL (f); |
3326 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3327 | attrs.valuemask |= XpmVisual; | |
3328 | attrs.valuemask |= XpmColormap; | |
3329 | ||
786a43d6 | 3330 | rc = XpmCreatePixmapFromData (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), |
f77fabaf | 3331 | (char **) bits, &bitmap, &mask, &attrs); |
786a43d6 | 3332 | if (rc != XpmSuccess) |
fe45ad15 CY |
3333 | { |
3334 | XpmFreeAttributes (&attrs); | |
3335 | return -1; | |
3336 | } | |
786a43d6 CY |
3337 | |
3338 | id = x_allocate_bitmap_record (f); | |
786a43d6 CY |
3339 | dpyinfo->bitmaps[id - 1].pixmap = bitmap; |
3340 | dpyinfo->bitmaps[id - 1].have_mask = 1; | |
3341 | dpyinfo->bitmaps[id - 1].mask = mask; | |
3342 | dpyinfo->bitmaps[id - 1].file = NULL; | |
3343 | dpyinfo->bitmaps[id - 1].height = attrs.height; | |
3344 | dpyinfo->bitmaps[id - 1].width = attrs.width; | |
3345 | dpyinfo->bitmaps[id - 1].depth = attrs.depth; | |
3346 | dpyinfo->bitmaps[id - 1].refcount = 1; | |
3347 | ||
3348 | XpmFreeAttributes (&attrs); | |
3349 | return id; | |
3350 | } | |
0d876a14 | 3351 | #endif /* defined (HAVE_XPM) && defined (HAVE_X_WINDOWS) */ |
786a43d6 | 3352 | |
4ef0d4d0 KS |
3353 | /* Load image IMG which will be displayed on frame F. Value is |
3354 | non-zero if successful. */ | |
3355 | ||
ea1aaa6f ST |
3356 | #ifdef HAVE_XPM |
3357 | ||
4ef0d4d0 | 3358 | static int |
d3da34e0 | 3359 | xpm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
3360 | { |
3361 | int rc; | |
3362 | XpmAttributes attrs; | |
3363 | Lisp_Object specified_file, color_symbols; | |
3364 | #ifdef HAVE_NTGUI | |
3365 | HDC hdc; | |
3366 | xpm_XImage * xpm_image = NULL, * xpm_mask = NULL; | |
3367 | #endif /* HAVE_NTGUI */ | |
3368 | ||
3369 | /* Configure the XPM lib. Use the visual of frame F. Allocate | |
3370 | close colors. Return colors allocated. */ | |
72af86bd | 3371 | memset (&attrs, 0, sizeof attrs); |
4ef0d4d0 KS |
3372 | |
3373 | #ifndef HAVE_NTGUI | |
3374 | attrs.visual = FRAME_X_VISUAL (f); | |
3375 | attrs.colormap = FRAME_X_COLORMAP (f); | |
3376 | attrs.valuemask |= XpmVisual; | |
3377 | attrs.valuemask |= XpmColormap; | |
3378 | #endif /* HAVE_NTGUI */ | |
3379 | ||
3380 | #ifdef ALLOC_XPM_COLORS | |
3381 | /* Allocate colors with our own functions which handle | |
3382 | failing color allocation more gracefully. */ | |
3383 | attrs.color_closure = f; | |
3384 | attrs.alloc_color = xpm_alloc_color; | |
3385 | attrs.free_colors = xpm_free_colors; | |
3386 | attrs.valuemask |= XpmAllocColor | XpmFreeColors | XpmColorClosure; | |
3387 | #else /* not ALLOC_XPM_COLORS */ | |
3388 | /* Let the XPM lib allocate colors. */ | |
3389 | attrs.valuemask |= XpmReturnAllocPixels; | |
3390 | #ifdef XpmAllocCloseColors | |
3391 | attrs.alloc_close_colors = 1; | |
3392 | attrs.valuemask |= XpmAllocCloseColors; | |
3393 | #else /* not XpmAllocCloseColors */ | |
3394 | attrs.closeness = 600; | |
3395 | attrs.valuemask |= XpmCloseness; | |
3396 | #endif /* not XpmAllocCloseColors */ | |
3397 | #endif /* ALLOC_XPM_COLORS */ | |
3398 | ||
3399 | /* If image specification contains symbolic color definitions, add | |
3400 | these to `attrs'. */ | |
3401 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3402 | if (CONSP (color_symbols)) | |
3403 | { | |
3404 | Lisp_Object tail; | |
3405 | XpmColorSymbol *xpm_syms; | |
3406 | int i, size; | |
3407 | ||
3408 | attrs.valuemask |= XpmColorSymbols; | |
3409 | ||
3410 | /* Count number of symbols. */ | |
3411 | attrs.numsymbols = 0; | |
3412 | for (tail = color_symbols; CONSP (tail); tail = XCDR (tail)) | |
3413 | ++attrs.numsymbols; | |
3414 | ||
3415 | /* Allocate an XpmColorSymbol array. */ | |
3416 | size = attrs.numsymbols * sizeof *xpm_syms; | |
3417 | xpm_syms = (XpmColorSymbol *) alloca (size); | |
72af86bd | 3418 | memset (xpm_syms, 0, size); |
4ef0d4d0 KS |
3419 | attrs.colorsymbols = xpm_syms; |
3420 | ||
3421 | /* Fill the color symbol array. */ | |
3422 | for (tail = color_symbols, i = 0; | |
3423 | CONSP (tail); | |
3424 | ++i, tail = XCDR (tail)) | |
3425 | { | |
7574650a AS |
3426 | Lisp_Object name; |
3427 | Lisp_Object color; | |
e22cffbc | 3428 | char *empty_string = (char *) ""; |
7574650a AS |
3429 | |
3430 | if (!CONSP (XCAR (tail))) | |
3431 | { | |
e22cffbc PE |
3432 | xpm_syms[i].name = empty_string; |
3433 | xpm_syms[i].value = empty_string; | |
7574650a AS |
3434 | continue; |
3435 | } | |
3436 | name = XCAR (XCAR (tail)); | |
3437 | color = XCDR (XCAR (tail)); | |
3438 | if (STRINGP (name)) | |
3439 | { | |
3440 | xpm_syms[i].name = (char *) alloca (SCHARS (name) + 1); | |
42a5b22f | 3441 | strcpy (xpm_syms[i].name, SSDATA (name)); |
7574650a AS |
3442 | } |
3443 | else | |
e22cffbc | 3444 | xpm_syms[i].name = empty_string; |
7574650a AS |
3445 | if (STRINGP (color)) |
3446 | { | |
3447 | xpm_syms[i].value = (char *) alloca (SCHARS (color) + 1); | |
42a5b22f | 3448 | strcpy (xpm_syms[i].value, SSDATA (color)); |
7574650a AS |
3449 | } |
3450 | else | |
e22cffbc | 3451 | xpm_syms[i].value = empty_string; |
4ef0d4d0 KS |
3452 | } |
3453 | } | |
3454 | ||
3455 | /* Create a pixmap for the image, either from a file, or from a | |
3456 | string buffer containing data in the same format as an XPM file. */ | |
3457 | #ifdef ALLOC_XPM_COLORS | |
3458 | xpm_init_color_cache (f, &attrs); | |
3459 | #endif | |
3460 | ||
3461 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
3462 | ||
3463 | #ifdef HAVE_NTGUI | |
3464 | { | |
3465 | HDC frame_dc = get_frame_dc (f); | |
3466 | hdc = CreateCompatibleDC (frame_dc); | |
3467 | release_frame_dc (f, frame_dc); | |
3468 | } | |
3469 | #endif /* HAVE_NTGUI */ | |
3470 | ||
3471 | if (STRINGP (specified_file)) | |
3472 | { | |
3473 | Lisp_Object file = x_find_image_file (specified_file); | |
3474 | if (!STRINGP (file)) | |
3475 | { | |
3476 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
7574650a AS |
3477 | #ifdef ALLOC_XPM_COLORS |
3478 | xpm_free_color_cache (); | |
3479 | #endif | |
4ef0d4d0 KS |
3480 | return 0; |
3481 | } | |
3482 | ||
3483 | #ifdef HAVE_NTGUI | |
3484 | /* XpmReadFileToPixmap is not available in the Windows port of | |
3485 | libxpm. But XpmReadFileToImage almost does what we want. */ | |
3486 | rc = fn_XpmReadFileToImage (&hdc, SDATA (file), | |
3487 | &xpm_image, &xpm_mask, | |
3488 | &attrs); | |
3489 | #else | |
3490 | rc = XpmReadFileToPixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3491 | SSDATA (file), &img->pixmap, &img->mask, |
4ef0d4d0 KS |
3492 | &attrs); |
3493 | #endif /* HAVE_NTGUI */ | |
3494 | } | |
3495 | else | |
3496 | { | |
3497 | Lisp_Object buffer = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
3498 | if (!STRINGP (buffer)) |
3499 | { | |
3500 | image_error ("Invalid image data `%s'", buffer, Qnil); | |
3501 | #ifdef ALLOC_XPM_COLORS | |
3502 | xpm_free_color_cache (); | |
3503 | #endif | |
3504 | return 0; | |
3505 | } | |
4ef0d4d0 KS |
3506 | #ifdef HAVE_NTGUI |
3507 | /* XpmCreatePixmapFromBuffer is not available in the Windows port | |
3508 | of libxpm. But XpmCreateImageFromBuffer almost does what we want. */ | |
3509 | rc = fn_XpmCreateImageFromBuffer (&hdc, SDATA (buffer), | |
3510 | &xpm_image, &xpm_mask, | |
3511 | &attrs); | |
3512 | #else | |
3513 | rc = XpmCreatePixmapFromBuffer (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
42a5b22f | 3514 | SSDATA (buffer), |
4ef0d4d0 KS |
3515 | &img->pixmap, &img->mask, |
3516 | &attrs); | |
3517 | #endif /* HAVE_NTGUI */ | |
3518 | } | |
3519 | ||
3520 | if (rc == XpmSuccess) | |
3521 | { | |
3522 | #if defined (COLOR_TABLE_SUPPORT) && defined (ALLOC_XPM_COLORS) | |
3523 | img->colors = colors_in_color_table (&img->ncolors); | |
3524 | #else /* not ALLOC_XPM_COLORS */ | |
3525 | int i; | |
3526 | ||
3527 | #ifdef HAVE_NTGUI | |
3528 | /* W32 XPM uses XImage to wrap what W32 Emacs calls a Pixmap, | |
3529 | plus some duplicate attributes. */ | |
3530 | if (xpm_image && xpm_image->bitmap) | |
3531 | { | |
3532 | img->pixmap = xpm_image->bitmap; | |
3533 | /* XImageFree in libXpm frees XImage struct without destroying | |
3534 | the bitmap, which is what we want. */ | |
3535 | fn_XImageFree (xpm_image); | |
3536 | } | |
3537 | if (xpm_mask && xpm_mask->bitmap) | |
3538 | { | |
3539 | /* The mask appears to be inverted compared with what we expect. | |
3540 | TODO: invert our expectations. See other places where we | |
3541 | have to invert bits because our idea of masks is backwards. */ | |
3542 | HGDIOBJ old_obj; | |
3543 | old_obj = SelectObject (hdc, xpm_mask->bitmap); | |
3544 | ||
3545 | PatBlt (hdc, 0, 0, xpm_mask->width, xpm_mask->height, DSTINVERT); | |
3546 | SelectObject (hdc, old_obj); | |
3547 | ||
3548 | img->mask = xpm_mask->bitmap; | |
3549 | fn_XImageFree (xpm_mask); | |
3550 | DeleteDC (hdc); | |
3551 | } | |
3552 | ||
3553 | DeleteDC (hdc); | |
3554 | #endif /* HAVE_NTGUI */ | |
3555 | ||
3556 | /* Remember allocated colors. */ | |
3557 | img->ncolors = attrs.nalloc_pixels; | |
3558 | img->colors = (unsigned long *) xmalloc (img->ncolors | |
3559 | * sizeof *img->colors); | |
3560 | for (i = 0; i < attrs.nalloc_pixels; ++i) | |
3561 | { | |
3562 | img->colors[i] = attrs.alloc_pixels[i]; | |
3563 | #ifdef DEBUG_X_COLORS | |
3564 | register_color (img->colors[i]); | |
3565 | #endif | |
3566 | } | |
3567 | #endif /* not ALLOC_XPM_COLORS */ | |
3568 | ||
3569 | img->width = attrs.width; | |
3570 | img->height = attrs.height; | |
3571 | xassert (img->width > 0 && img->height > 0); | |
3572 | ||
3573 | /* The call to XpmFreeAttributes below frees attrs.alloc_pixels. */ | |
3574 | #ifdef HAVE_NTGUI | |
3575 | fn_XpmFreeAttributes (&attrs); | |
3576 | #else | |
3577 | XpmFreeAttributes (&attrs); | |
3578 | #endif /* HAVE_NTGUI */ | |
3579 | } | |
3580 | else | |
3581 | { | |
3582 | #ifdef HAVE_NTGUI | |
3583 | DeleteDC (hdc); | |
3584 | #endif /* HAVE_NTGUI */ | |
3585 | ||
3586 | switch (rc) | |
3587 | { | |
3588 | case XpmOpenFailed: | |
3589 | image_error ("Error opening XPM file (%s)", img->spec, Qnil); | |
3590 | break; | |
3591 | ||
3592 | case XpmFileInvalid: | |
3593 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
3594 | break; | |
3595 | ||
3596 | case XpmNoMemory: | |
3597 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3598 | break; | |
3599 | ||
3600 | case XpmColorFailed: | |
3601 | image_error ("Color allocation error (%s)", img->spec, Qnil); | |
3602 | break; | |
3603 | ||
3604 | default: | |
3605 | image_error ("Unknown error (%s)", img->spec, Qnil); | |
3606 | break; | |
3607 | } | |
3608 | } | |
3609 | ||
3610 | #ifdef ALLOC_XPM_COLORS | |
3611 | xpm_free_color_cache (); | |
3612 | #endif | |
3613 | return rc == XpmSuccess; | |
3614 | } | |
3615 | ||
3616 | #endif /* HAVE_XPM */ | |
3617 | ||
9e2a2647 | 3618 | #if defined (HAVE_NS) && !defined (HAVE_XPM) |
ea1aaa6f | 3619 | |
9e2a2647 | 3620 | /* XPM support functions for NS where libxpm is not available. |
ea1aaa6f ST |
3621 | Only XPM version 3 (without any extensions) is supported. */ |
3622 | ||
f57e2426 J |
3623 | static int xpm_scan (const unsigned char **, const unsigned char *, |
3624 | const unsigned char **, int *); | |
ea1aaa6f | 3625 | static Lisp_Object xpm_make_color_table_v |
f57e2426 J |
3626 | (void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
3627 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int)); | |
3628 | static void xpm_put_color_table_v (Lisp_Object, const unsigned char *, | |
3629 | int, Lisp_Object); | |
3630 | static Lisp_Object xpm_get_color_table_v (Lisp_Object, | |
3631 | const unsigned char *, int); | |
ea1aaa6f | 3632 | static Lisp_Object xpm_make_color_table_h |
f57e2426 J |
3633 | (void (**) (Lisp_Object, const unsigned char *, int, Lisp_Object), |
3634 | Lisp_Object (**) (Lisp_Object, const unsigned char *, int)); | |
3635 | static void xpm_put_color_table_h (Lisp_Object, const unsigned char *, | |
3636 | int, Lisp_Object); | |
3637 | static Lisp_Object xpm_get_color_table_h (Lisp_Object, | |
3638 | const unsigned char *, int); | |
3639 | static int xpm_str_to_color_key (const char *); | |
3640 | static int xpm_load_image (struct frame *, struct image *, | |
3641 | const unsigned char *, const unsigned char *); | |
ea1aaa6f ST |
3642 | |
3643 | /* Tokens returned from xpm_scan. */ | |
3644 | ||
3645 | enum xpm_token | |
b0c396f7 JV |
3646 | { |
3647 | XPM_TK_IDENT = 256, | |
3648 | XPM_TK_STRING, | |
3649 | XPM_TK_EOF | |
3650 | }; | |
ea1aaa6f ST |
3651 | |
3652 | /* Scan an XPM data and return a character (< 256) or a token defined | |
3653 | by enum xpm_token above. *S and END are the start (inclusive) and | |
3654 | the end (exclusive) addresses of the data, respectively. Advance | |
3655 | *S while scanning. If token is either XPM_TK_IDENT or | |
3656 | XPM_TK_STRING, *BEG and *LEN are set to the start address and the | |
3657 | length of the corresponding token, respectively. */ | |
3658 | ||
3659 | static int | |
3d608a86 J |
3660 | xpm_scan (const unsigned char **s, |
3661 | const unsigned char *end, | |
3662 | const unsigned char **beg, | |
3663 | int *len) | |
ea1aaa6f ST |
3664 | { |
3665 | int c; | |
3666 | ||
3667 | while (*s < end) | |
3668 | { | |
3669 | /* Skip white-space. */ | |
3670 | while (*s < end && (c = *(*s)++, isspace (c))) | |
9ecf6403 | 3671 | ; |
ea1aaa6f ST |
3672 | |
3673 | /* gnus-pointer.xpm uses '-' in its identifier. | |
9ecf6403 | 3674 | sb-dir-plus.xpm uses '+' in its identifier. */ |
ea1aaa6f | 3675 | if (isalpha (c) || c == '_' || c == '-' || c == '+') |
9ecf6403 YM |
3676 | { |
3677 | *beg = *s - 1; | |
2ff0845e YM |
3678 | while (*s < end |
3679 | && (c = **s, isalnum (c) || c == '_' || c == '-' || c == '+')) | |
b0c396f7 | 3680 | ++*s; |
9ecf6403 YM |
3681 | *len = *s - *beg; |
3682 | return XPM_TK_IDENT; | |
3683 | } | |
ea1aaa6f | 3684 | else if (c == '"') |
9ecf6403 YM |
3685 | { |
3686 | *beg = *s; | |
3687 | while (*s < end && **s != '"') | |
3688 | ++*s; | |
3689 | *len = *s - *beg; | |
3690 | if (*s < end) | |
3691 | ++*s; | |
3692 | return XPM_TK_STRING; | |
3693 | } | |
ea1aaa6f | 3694 | else if (c == '/') |
9ecf6403 YM |
3695 | { |
3696 | if (*s < end && **s == '*') | |
3697 | { | |
3698 | /* C-style comment. */ | |
3699 | ++*s; | |
3700 | do | |
3701 | { | |
3702 | while (*s < end && *(*s)++ != '*') | |
3703 | ; | |
3704 | } | |
3705 | while (*s < end && **s != '/'); | |
3706 | if (*s < end) | |
3707 | ++*s; | |
3708 | } | |
3709 | else | |
3710 | return c; | |
3711 | } | |
ea1aaa6f | 3712 | else |
9ecf6403 | 3713 | return c; |
ea1aaa6f ST |
3714 | } |
3715 | ||
3716 | return XPM_TK_EOF; | |
3717 | } | |
3718 | ||
bbe6f2aa | 3719 | /* Functions for color table lookup in XPM data. A key is a string |
ea1aaa6f ST |
3720 | specifying the color of each pixel in XPM data. A value is either |
3721 | an integer that specifies a pixel color, Qt that specifies | |
3722 | transparency, or Qnil for the unspecified color. If the length of | |
3723 | the key string is one, a vector is used as a table. Otherwise, a | |
3724 | hash table is used. */ | |
3725 | ||
3726 | static Lisp_Object | |
3d608a86 J |
3727 | xpm_make_color_table_v (void (**put_func) (Lisp_Object, |
3728 | const unsigned char *, | |
3729 | int, | |
3730 | Lisp_Object), | |
3731 | Lisp_Object (**get_func) (Lisp_Object, | |
3732 | const unsigned char *, | |
3733 | int)) | |
ea1aaa6f ST |
3734 | { |
3735 | *put_func = xpm_put_color_table_v; | |
3736 | *get_func = xpm_get_color_table_v; | |
3737 | return Fmake_vector (make_number (256), Qnil); | |
3738 | } | |
3739 | ||
3740 | static void | |
3d608a86 J |
3741 | xpm_put_color_table_v (Lisp_Object color_table, |
3742 | const unsigned char *chars_start, | |
3743 | int chars_len, | |
3744 | Lisp_Object color) | |
ea1aaa6f ST |
3745 | { |
3746 | XVECTOR (color_table)->contents[*chars_start] = color; | |
3747 | } | |
3748 | ||
3749 | static Lisp_Object | |
3d608a86 J |
3750 | xpm_get_color_table_v (Lisp_Object color_table, |
3751 | const unsigned char *chars_start, | |
3752 | int chars_len) | |
ea1aaa6f ST |
3753 | { |
3754 | return XVECTOR (color_table)->contents[*chars_start]; | |
3755 | } | |
3756 | ||
3757 | static Lisp_Object | |
3d608a86 J |
3758 | xpm_make_color_table_h (void (**put_func) (Lisp_Object, |
3759 | const unsigned char *, | |
3760 | int, | |
3761 | Lisp_Object), | |
3762 | Lisp_Object (**get_func) (Lisp_Object, | |
3763 | const unsigned char *, | |
3764 | int)) | |
ea1aaa6f ST |
3765 | { |
3766 | *put_func = xpm_put_color_table_h; | |
3767 | *get_func = xpm_get_color_table_h; | |
3768 | return make_hash_table (Qequal, make_number (DEFAULT_HASH_SIZE), | |
9ecf6403 YM |
3769 | make_float (DEFAULT_REHASH_SIZE), |
3770 | make_float (DEFAULT_REHASH_THRESHOLD), | |
3771 | Qnil, Qnil, Qnil); | |
ea1aaa6f ST |
3772 | } |
3773 | ||
3774 | static void | |
3d608a86 J |
3775 | xpm_put_color_table_h (Lisp_Object color_table, |
3776 | const unsigned char *chars_start, | |
3777 | int chars_len, | |
3778 | Lisp_Object color) | |
ea1aaa6f ST |
3779 | { |
3780 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
3781 | unsigned hash_code; | |
3782 | Lisp_Object chars = make_unibyte_string (chars_start, chars_len); | |
3783 | ||
3784 | hash_lookup (table, chars, &hash_code); | |
3785 | hash_put (table, chars, color, hash_code); | |
3786 | } | |
3787 | ||
3788 | static Lisp_Object | |
3d608a86 J |
3789 | xpm_get_color_table_h (Lisp_Object color_table, |
3790 | const unsigned char *chars_start, | |
3791 | int chars_len) | |
ea1aaa6f ST |
3792 | { |
3793 | struct Lisp_Hash_Table *table = XHASH_TABLE (color_table); | |
3794 | int i = hash_lookup (table, make_unibyte_string (chars_start, chars_len), | |
9ecf6403 | 3795 | NULL); |
ea1aaa6f ST |
3796 | |
3797 | return i >= 0 ? HASH_VALUE (table, i) : Qnil; | |
3798 | } | |
3799 | ||
3800 | enum xpm_color_key { | |
3801 | XPM_COLOR_KEY_S, | |
3802 | XPM_COLOR_KEY_M, | |
3803 | XPM_COLOR_KEY_G4, | |
3804 | XPM_COLOR_KEY_G, | |
3805 | XPM_COLOR_KEY_C | |
3806 | }; | |
3807 | ||
46accb8f | 3808 | static const char xpm_color_key_strings[][4] = {"s", "m", "g4", "g", "c"}; |
ea1aaa6f ST |
3809 | |
3810 | static int | |
3d608a86 | 3811 | xpm_str_to_color_key (const char *s) |
ea1aaa6f ST |
3812 | { |
3813 | int i; | |
3814 | ||
3815 | for (i = 0; | |
3816 | i < sizeof xpm_color_key_strings / sizeof xpm_color_key_strings[0]; | |
3817 | i++) | |
3818 | if (strcmp (xpm_color_key_strings[i], s) == 0) | |
3819 | return i; | |
3820 | return -1; | |
3821 | } | |
3822 | ||
3823 | static int | |
3d608a86 J |
3824 | xpm_load_image (struct frame *f, |
3825 | struct image *img, | |
3826 | const unsigned char *contents, | |
3827 | const unsigned char *end) | |
ea1aaa6f | 3828 | { |
46accb8f | 3829 | const unsigned char *s = contents, *beg, *str; |
ea1aaa6f ST |
3830 | unsigned char buffer[BUFSIZ]; |
3831 | int width, height, x, y; | |
3832 | int num_colors, chars_per_pixel; | |
3833 | int len, LA1; | |
46accb8f YM |
3834 | void (*put_color_table) (Lisp_Object, const unsigned char *, int, Lisp_Object); |
3835 | Lisp_Object (*get_color_table) (Lisp_Object, const unsigned char *, int); | |
ea1aaa6f ST |
3836 | Lisp_Object frame, color_symbols, color_table; |
3837 | int best_key, have_mask = 0; | |
3838 | XImagePtr ximg = NULL, mask_img = NULL; | |
3839 | ||
b0c396f7 JV |
3840 | #define match() \ |
3841 | LA1 = xpm_scan (&s, end, &beg, &len) | |
ea1aaa6f | 3842 | |
b0c396f7 JV |
3843 | #define expect(TOKEN) \ |
3844 | if (LA1 != (TOKEN)) \ | |
3845 | goto failure; \ | |
3846 | else \ | |
3847 | match () | |
ea1aaa6f | 3848 | |
b0c396f7 JV |
3849 | #define expect_ident(IDENT) \ |
3850 | if (LA1 == XPM_TK_IDENT \ | |
3851 | && strlen ((IDENT)) == len && memcmp ((IDENT), beg, len) == 0) \ | |
3852 | match (); \ | |
3853 | else \ | |
3854 | goto failure | |
ea1aaa6f ST |
3855 | |
3856 | if (!(end - s >= 9 && memcmp (s, "/* XPM */", 9) == 0)) | |
3857 | goto failure; | |
3858 | s += 9; | |
ed3751c8 | 3859 | match (); |
ea1aaa6f ST |
3860 | expect_ident ("static"); |
3861 | expect_ident ("char"); | |
3862 | expect ('*'); | |
3863 | expect (XPM_TK_IDENT); | |
3864 | expect ('['); | |
3865 | expect (']'); | |
3866 | expect ('='); | |
3867 | expect ('{'); | |
3868 | expect (XPM_TK_STRING); | |
3869 | if (len >= BUFSIZ) | |
3870 | goto failure; | |
3871 | memcpy (buffer, beg, len); | |
3872 | buffer[len] = '\0'; | |
3873 | if (sscanf (buffer, "%d %d %d %d", &width, &height, | |
9ecf6403 | 3874 | &num_colors, &chars_per_pixel) != 4 |
ea1aaa6f ST |
3875 | || width <= 0 || height <= 0 |
3876 | || num_colors <= 0 || chars_per_pixel <= 0) | |
3877 | goto failure; | |
de297941 YM |
3878 | |
3879 | if (!check_image_size (f, width, height)) | |
3880 | { | |
10ea2b82 | 3881 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
de297941 YM |
3882 | goto failure; |
3883 | } | |
3884 | ||
ea1aaa6f ST |
3885 | expect (','); |
3886 | ||
3887 | XSETFRAME (frame, f); | |
3888 | if (!NILP (Fxw_display_color_p (frame))) | |
3889 | best_key = XPM_COLOR_KEY_C; | |
3890 | else if (!NILP (Fx_display_grayscale_p (frame))) | |
3891 | best_key = (XFASTINT (Fx_display_planes (frame)) > 2 | |
9ecf6403 | 3892 | ? XPM_COLOR_KEY_G : XPM_COLOR_KEY_G4); |
ea1aaa6f ST |
3893 | else |
3894 | best_key = XPM_COLOR_KEY_M; | |
3895 | ||
3896 | color_symbols = image_spec_value (img->spec, QCcolor_symbols, NULL); | |
3897 | if (chars_per_pixel == 1) | |
3898 | color_table = xpm_make_color_table_v (&put_color_table, | |
9ecf6403 | 3899 | &get_color_table); |
ea1aaa6f ST |
3900 | else |
3901 | color_table = xpm_make_color_table_h (&put_color_table, | |
9ecf6403 | 3902 | &get_color_table); |
ea1aaa6f ST |
3903 | |
3904 | while (num_colors-- > 0) | |
3905 | { | |
25a48bd0 | 3906 | char *color, *max_color; |
ea1aaa6f ST |
3907 | int key, next_key, max_key = 0; |
3908 | Lisp_Object symbol_color = Qnil, color_val; | |
3909 | XColor cdef; | |
3910 | ||
3911 | expect (XPM_TK_STRING); | |
3912 | if (len <= chars_per_pixel || len >= BUFSIZ + chars_per_pixel) | |
9ecf6403 | 3913 | goto failure; |
ea1aaa6f ST |
3914 | memcpy (buffer, beg + chars_per_pixel, len - chars_per_pixel); |
3915 | buffer[len - chars_per_pixel] = '\0'; | |
3916 | ||
3917 | str = strtok (buffer, " \t"); | |
3918 | if (str == NULL) | |
9ecf6403 | 3919 | goto failure; |
ea1aaa6f ST |
3920 | key = xpm_str_to_color_key (str); |
3921 | if (key < 0) | |
9ecf6403 | 3922 | goto failure; |
ea1aaa6f | 3923 | do |
9ecf6403 YM |
3924 | { |
3925 | color = strtok (NULL, " \t"); | |
3926 | if (color == NULL) | |
3927 | goto failure; | |
ea1aaa6f | 3928 | |
9db94f82 | 3929 | while ((str = strtok (NULL, " \t")) != NULL) |
9ecf6403 YM |
3930 | { |
3931 | next_key = xpm_str_to_color_key (str); | |
3932 | if (next_key >= 0) | |
3933 | break; | |
3934 | color[strlen (color)] = ' '; | |
3935 | } | |
ea1aaa6f | 3936 | |
9ecf6403 YM |
3937 | if (key == XPM_COLOR_KEY_S) |
3938 | { | |
3939 | if (NILP (symbol_color)) | |
3940 | symbol_color = build_string (color); | |
3941 | } | |
3942 | else if (max_key < key && key <= best_key) | |
3943 | { | |
3944 | max_key = key; | |
3945 | max_color = color; | |
3946 | } | |
3947 | key = next_key; | |
3948 | } | |
ea1aaa6f ST |
3949 | while (str); |
3950 | ||
3951 | color_val = Qnil; | |
3952 | if (!NILP (color_symbols) && !NILP (symbol_color)) | |
9ecf6403 YM |
3953 | { |
3954 | Lisp_Object specified_color = Fassoc (symbol_color, color_symbols); | |
3955 | ||
3956 | if (CONSP (specified_color) && STRINGP (XCDR (specified_color))) | |
9db94f82 | 3957 | { |
25a48bd0 | 3958 | if (xstrcasecmp (SSDATA (XCDR (specified_color)), "None") == 0) |
9db94f82 YM |
3959 | color_val = Qt; |
3960 | else if (x_defined_color (f, SDATA (XCDR (specified_color)), | |
3961 | &cdef, 0)) | |
3962 | color_val = make_number (cdef.pixel); | |
3963 | } | |
9ecf6403 | 3964 | } |
ea1aaa6f | 3965 | if (NILP (color_val) && max_key > 0) |
9db94f82 | 3966 | { |
05131107 | 3967 | if (xstrcasecmp (max_color, "None") == 0) |
9db94f82 YM |
3968 | color_val = Qt; |
3969 | else if (x_defined_color (f, max_color, &cdef, 0)) | |
3970 | color_val = make_number (cdef.pixel); | |
3971 | } | |
ea1aaa6f | 3972 | if (!NILP (color_val)) |
9ecf6403 | 3973 | (*put_color_table) (color_table, beg, chars_per_pixel, color_val); |
ea1aaa6f ST |
3974 | |
3975 | expect (','); | |
3976 | } | |
3977 | ||
3978 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
9ecf6403 | 3979 | &ximg, &img->pixmap) |
edfda783 | 3980 | #ifndef HAVE_NS |
ea1aaa6f | 3981 | || !x_create_x_image_and_pixmap (f, width, height, 1, |
edfda783 AR |
3982 | &mask_img, &img->mask) |
3983 | #endif | |
3984 | ) | |
ea1aaa6f ST |
3985 | { |
3986 | image_error ("Out of memory (%s)", img->spec, Qnil); | |
3987 | goto error; | |
3988 | } | |
3989 | ||
3990 | for (y = 0; y < height; y++) | |
3991 | { | |
3992 | expect (XPM_TK_STRING); | |
3993 | str = beg; | |
3994 | if (len < width * chars_per_pixel) | |
9ecf6403 | 3995 | goto failure; |
ea1aaa6f | 3996 | for (x = 0; x < width; x++, str += chars_per_pixel) |
9ecf6403 YM |
3997 | { |
3998 | Lisp_Object color_val = | |
3999 | (*get_color_table) (color_table, str, chars_per_pixel); | |
4000 | ||
4001 | XPutPixel (ximg, x, y, | |
4002 | (INTEGERP (color_val) ? XINT (color_val) | |
4003 | : FRAME_FOREGROUND_PIXEL (f))); | |
edfda783 | 4004 | #ifndef HAVE_NS |
9ecf6403 YM |
4005 | XPutPixel (mask_img, x, y, |
4006 | (!EQ (color_val, Qt) ? PIX_MASK_DRAW | |
4007 | : (have_mask = 1, PIX_MASK_RETAIN))); | |
edfda783 | 4008 | #else |
ed3751c8 JB |
4009 | if (EQ (color_val, Qt)) |
4010 | ns_set_alpha (ximg, x, y, 0); | |
edfda783 | 4011 | #endif |
9ecf6403 | 4012 | } |
ea1aaa6f | 4013 | if (y + 1 < height) |
9ecf6403 | 4014 | expect (','); |
ea1aaa6f ST |
4015 | } |
4016 | ||
4017 | img->width = width; | |
4018 | img->height = height; | |
4019 | ||
0b8ac842 YM |
4020 | /* Maybe fill in the background field while we have ximg handy. */ |
4021 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
4022 | IMAGE_BACKGROUND (img, f, ximg); | |
4023 | ||
ea1aaa6f ST |
4024 | x_put_x_image (f, ximg, img->pixmap, width, height); |
4025 | x_destroy_x_image (ximg); | |
edfda783 | 4026 | #ifndef HAVE_NS |
ea1aaa6f ST |
4027 | if (have_mask) |
4028 | { | |
9ecf6403 YM |
4029 | /* Fill in the background_transparent field while we have the |
4030 | mask handy. */ | |
4031 | image_background_transparent (img, f, mask_img); | |
4032 | ||
ea1aaa6f ST |
4033 | x_put_x_image (f, mask_img, img->mask, width, height); |
4034 | x_destroy_x_image (mask_img); | |
4035 | } | |
4036 | else | |
4037 | { | |
4038 | x_destroy_x_image (mask_img); | |
4039 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4040 | img->mask = NO_PIXMAP; | |
4041 | } | |
edfda783 | 4042 | #endif |
ea1aaa6f ST |
4043 | return 1; |
4044 | ||
4045 | failure: | |
4046 | image_error ("Invalid XPM file (%s)", img->spec, Qnil); | |
4047 | error: | |
4048 | x_destroy_x_image (ximg); | |
4049 | x_destroy_x_image (mask_img); | |
4050 | x_clear_image (f, img); | |
4051 | return 0; | |
4052 | ||
4053 | #undef match | |
4054 | #undef expect | |
4055 | #undef expect_ident | |
4056 | } | |
4057 | ||
4058 | static int | |
3d608a86 J |
4059 | xpm_load (struct frame *f, |
4060 | struct image *img) | |
ea1aaa6f ST |
4061 | { |
4062 | int success_p = 0; | |
4063 | Lisp_Object file_name; | |
4064 | ||
4065 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
4066 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
4067 | if (STRINGP (file_name)) | |
4068 | { | |
4069 | Lisp_Object file; | |
4070 | unsigned char *contents; | |
4071 | int size; | |
ea1aaa6f ST |
4072 | |
4073 | file = x_find_image_file (file_name); | |
ea1aaa6f | 4074 | if (!STRINGP (file)) |
9ecf6403 YM |
4075 | { |
4076 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
9ecf6403 YM |
4077 | return 0; |
4078 | } | |
ea1aaa6f ST |
4079 | |
4080 | contents = slurp_file (SDATA (file), &size); | |
4081 | if (contents == NULL) | |
9ecf6403 YM |
4082 | { |
4083 | image_error ("Error loading XPM image `%s'", img->spec, Qnil); | |
9ecf6403 YM |
4084 | return 0; |
4085 | } | |
ea1aaa6f ST |
4086 | |
4087 | success_p = xpm_load_image (f, img, contents, contents + size); | |
4088 | xfree (contents); | |
ea1aaa6f ST |
4089 | } |
4090 | else | |
4091 | { | |
4092 | Lisp_Object data; | |
4093 | ||
4094 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
4095 | if (!STRINGP (data)) |
4096 | { | |
4097 | image_error ("Invalid image data `%s'", data, Qnil); | |
4098 | return 0; | |
4099 | } | |
ea1aaa6f | 4100 | success_p = xpm_load_image (f, img, SDATA (data), |
9ecf6403 | 4101 | SDATA (data) + SBYTES (data)); |
ea1aaa6f ST |
4102 | } |
4103 | ||
4104 | return success_p; | |
4105 | } | |
4106 | ||
9e2a2647 | 4107 | #endif /* HAVE_NS && !HAVE_XPM */ |
b0da69a7 | 4108 | |
ea1aaa6f | 4109 | |
4ef0d4d0 KS |
4110 | \f |
4111 | /*********************************************************************** | |
4112 | Color table | |
b0c396f7 | 4113 | ***********************************************************************/ |
4ef0d4d0 KS |
4114 | |
4115 | #ifdef COLOR_TABLE_SUPPORT | |
4116 | ||
4117 | /* An entry in the color table mapping an RGB color to a pixel color. */ | |
4118 | ||
4119 | struct ct_color | |
4120 | { | |
4121 | int r, g, b; | |
4122 | unsigned long pixel; | |
4123 | ||
4124 | /* Next in color table collision list. */ | |
4125 | struct ct_color *next; | |
4126 | }; | |
4127 | ||
4128 | /* The bucket vector size to use. Must be prime. */ | |
4129 | ||
4130 | #define CT_SIZE 101 | |
4131 | ||
4132 | /* Value is a hash of the RGB color given by R, G, and B. */ | |
4133 | ||
4134 | #define CT_HASH_RGB(R, G, B) (((R) << 16) ^ ((G) << 8) ^ (B)) | |
4135 | ||
4136 | /* The color hash table. */ | |
4137 | ||
4138 | struct ct_color **ct_table; | |
4139 | ||
4140 | /* Number of entries in the color table. */ | |
4141 | ||
4142 | int ct_colors_allocated; | |
4143 | ||
4144 | /* Initialize the color table. */ | |
4145 | ||
4146 | static void | |
d3da34e0 | 4147 | init_color_table (void) |
4ef0d4d0 KS |
4148 | { |
4149 | int size = CT_SIZE * sizeof (*ct_table); | |
4150 | ct_table = (struct ct_color **) xmalloc (size); | |
72af86bd | 4151 | memset (ct_table, 0, size); |
4ef0d4d0 KS |
4152 | ct_colors_allocated = 0; |
4153 | } | |
4154 | ||
4155 | ||
4156 | /* Free memory associated with the color table. */ | |
4157 | ||
4158 | static void | |
d3da34e0 | 4159 | free_color_table (void) |
4ef0d4d0 KS |
4160 | { |
4161 | int i; | |
4162 | struct ct_color *p, *next; | |
4163 | ||
4164 | for (i = 0; i < CT_SIZE; ++i) | |
4165 | for (p = ct_table[i]; p; p = next) | |
4166 | { | |
4167 | next = p->next; | |
4168 | xfree (p); | |
4169 | } | |
4170 | ||
4171 | xfree (ct_table); | |
4172 | ct_table = NULL; | |
4173 | } | |
4174 | ||
4175 | ||
4176 | /* Value is a pixel color for RGB color R, G, B on frame F. If an | |
4177 | entry for that color already is in the color table, return the | |
4178 | pixel color of that entry. Otherwise, allocate a new color for R, | |
4179 | G, B, and make an entry in the color table. */ | |
4180 | ||
4181 | static unsigned long | |
d3da34e0 | 4182 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4183 | { |
4184 | unsigned hash = CT_HASH_RGB (r, g, b); | |
4185 | int i = hash % CT_SIZE; | |
4186 | struct ct_color *p; | |
4187 | Display_Info *dpyinfo; | |
4188 | ||
4189 | /* Handle TrueColor visuals specially, which improves performance by | |
4190 | two orders of magnitude. Freeing colors on TrueColor visuals is | |
4191 | a nop, and pixel colors specify RGB values directly. See also | |
4192 | the Xlib spec, chapter 3.1. */ | |
4193 | dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4194 | if (dpyinfo->red_bits > 0) | |
4195 | { | |
4196 | unsigned long pr, pg, pb; | |
4197 | ||
4198 | /* Apply gamma-correction like normal color allocation does. */ | |
4199 | if (f->gamma) | |
4200 | { | |
4201 | XColor color; | |
4202 | color.red = r, color.green = g, color.blue = b; | |
4203 | gamma_correct (f, &color); | |
4204 | r = color.red, g = color.green, b = color.blue; | |
4205 | } | |
4206 | ||
4207 | /* Scale down RGB values to the visual's bits per RGB, and shift | |
4208 | them to the right position in the pixel color. Note that the | |
4209 | original RGB values are 16-bit values, as usual in X. */ | |
4210 | pr = (r >> (16 - dpyinfo->red_bits)) << dpyinfo->red_offset; | |
4211 | pg = (g >> (16 - dpyinfo->green_bits)) << dpyinfo->green_offset; | |
4212 | pb = (b >> (16 - dpyinfo->blue_bits)) << dpyinfo->blue_offset; | |
4213 | ||
4214 | /* Assemble the pixel color. */ | |
4215 | return pr | pg | pb; | |
4216 | } | |
1f026899 | 4217 | |
4ef0d4d0 KS |
4218 | for (p = ct_table[i]; p; p = p->next) |
4219 | if (p->r == r && p->g == g && p->b == b) | |
4220 | break; | |
4221 | ||
4222 | if (p == NULL) | |
4223 | { | |
4224 | ||
4225 | #ifdef HAVE_X_WINDOWS | |
4226 | XColor color; | |
4227 | Colormap cmap; | |
4228 | int rc; | |
4229 | ||
4230 | color.red = r; | |
4231 | color.green = g; | |
4232 | color.blue = b; | |
4233 | ||
4234 | cmap = FRAME_X_COLORMAP (f); | |
4235 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4236 | if (rc) | |
4237 | { | |
4238 | ++ct_colors_allocated; | |
4239 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4240 | p->r = r; | |
4241 | p->g = g; | |
4242 | p->b = b; | |
4243 | p->pixel = color.pixel; | |
4244 | p->next = ct_table[i]; | |
4245 | ct_table[i] = p; | |
4246 | } | |
4247 | else | |
4248 | return FRAME_FOREGROUND_PIXEL (f); | |
4249 | ||
4250 | #else | |
4251 | COLORREF color; | |
4252 | #ifdef HAVE_NTGUI | |
4253 | color = PALETTERGB (r, g, b); | |
4254 | #else | |
4255 | color = RGB_TO_ULONG (r, g, b); | |
4256 | #endif /* HAVE_NTGUI */ | |
4257 | ++ct_colors_allocated; | |
4258 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4259 | p->r = r; | |
4260 | p->g = g; | |
4261 | p->b = b; | |
4262 | p->pixel = color; | |
4263 | p->next = ct_table[i]; | |
4264 | ct_table[i] = p; | |
4265 | #endif /* HAVE_X_WINDOWS */ | |
4266 | ||
4267 | } | |
4268 | ||
4269 | return p->pixel; | |
4270 | } | |
4271 | ||
4272 | ||
4273 | /* Look up pixel color PIXEL which is used on frame F in the color | |
4274 | table. If not already present, allocate it. Value is PIXEL. */ | |
4275 | ||
4276 | static unsigned long | |
d3da34e0 | 4277 | lookup_pixel_color (struct frame *f, unsigned long pixel) |
4ef0d4d0 KS |
4278 | { |
4279 | int i = pixel % CT_SIZE; | |
4280 | struct ct_color *p; | |
4281 | ||
4282 | for (p = ct_table[i]; p; p = p->next) | |
4283 | if (p->pixel == pixel) | |
4284 | break; | |
4285 | ||
4286 | if (p == NULL) | |
4287 | { | |
4288 | XColor color; | |
4289 | Colormap cmap; | |
4290 | int rc; | |
4291 | ||
4292 | #ifdef HAVE_X_WINDOWS | |
4293 | cmap = FRAME_X_COLORMAP (f); | |
4294 | color.pixel = pixel; | |
4295 | x_query_color (f, &color); | |
4296 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4297 | #else | |
4298 | BLOCK_INPUT; | |
4299 | cmap = DefaultColormapOfScreen (FRAME_X_SCREEN (f)); | |
4300 | color.pixel = pixel; | |
4301 | XQueryColor (NULL, cmap, &color); | |
4302 | rc = x_alloc_nearest_color (f, cmap, &color); | |
4303 | UNBLOCK_INPUT; | |
4304 | #endif /* HAVE_X_WINDOWS */ | |
4305 | ||
4306 | if (rc) | |
4307 | { | |
4308 | ++ct_colors_allocated; | |
4309 | ||
4310 | p = (struct ct_color *) xmalloc (sizeof *p); | |
4311 | p->r = color.red; | |
4312 | p->g = color.green; | |
4313 | p->b = color.blue; | |
4314 | p->pixel = pixel; | |
4315 | p->next = ct_table[i]; | |
4316 | ct_table[i] = p; | |
4317 | } | |
4318 | else | |
4319 | return FRAME_FOREGROUND_PIXEL (f); | |
4320 | } | |
4321 | return p->pixel; | |
4322 | } | |
4323 | ||
4324 | ||
4325 | /* Value is a vector of all pixel colors contained in the color table, | |
4326 | allocated via xmalloc. Set *N to the number of colors. */ | |
4327 | ||
4328 | static unsigned long * | |
d3da34e0 | 4329 | colors_in_color_table (int *n) |
4ef0d4d0 KS |
4330 | { |
4331 | int i, j; | |
4332 | struct ct_color *p; | |
4333 | unsigned long *colors; | |
4334 | ||
4335 | if (ct_colors_allocated == 0) | |
4336 | { | |
4337 | *n = 0; | |
4338 | colors = NULL; | |
4339 | } | |
4340 | else | |
4341 | { | |
4342 | colors = (unsigned long *) xmalloc (ct_colors_allocated | |
4343 | * sizeof *colors); | |
4344 | *n = ct_colors_allocated; | |
4345 | ||
4346 | for (i = j = 0; i < CT_SIZE; ++i) | |
4347 | for (p = ct_table[i]; p; p = p->next) | |
4348 | colors[j++] = p->pixel; | |
4349 | } | |
4350 | ||
4351 | return colors; | |
4352 | } | |
4353 | ||
4354 | #else /* COLOR_TABLE_SUPPORT */ | |
4355 | ||
4356 | static unsigned long | |
7c3320d8 | 4357 | lookup_rgb_color (struct frame *f, int r, int g, int b) |
4ef0d4d0 KS |
4358 | { |
4359 | unsigned long pixel; | |
4360 | ||
4ef0d4d0 KS |
4361 | #ifdef HAVE_NTGUI |
4362 | pixel = PALETTERGB (r >> 8, g >> 8, b >> 8); | |
4363 | #endif /* HAVE_NTGUI */ | |
4364 | ||
edfda783 AR |
4365 | #ifdef HAVE_NS |
4366 | pixel = RGB_TO_ULONG (r >> 8, g >> 8, b >> 8); | |
4367 | #endif /* HAVE_NS */ | |
4ef0d4d0 KS |
4368 | return pixel; |
4369 | } | |
4370 | ||
4371 | static void | |
7c3320d8 | 4372 | init_color_table (void) |
4ef0d4d0 KS |
4373 | { |
4374 | } | |
4375 | #endif /* COLOR_TABLE_SUPPORT */ | |
4376 | ||
4377 | \f | |
4378 | /*********************************************************************** | |
4379 | Algorithms | |
b0c396f7 | 4380 | ***********************************************************************/ |
4ef0d4d0 | 4381 | |
f57e2426 J |
4382 | static XColor *x_to_xcolors (struct frame *, struct image *, int); |
4383 | static void x_from_xcolors (struct frame *, struct image *, XColor *); | |
4384 | static void x_detect_edges (struct frame *, struct image *, int[9], int); | |
4ef0d4d0 KS |
4385 | |
4386 | #ifdef HAVE_NTGUI | |
4387 | static void XPutPixel (XImagePtr , int, int, COLORREF); | |
4388 | #endif /* HAVE_NTGUI */ | |
4389 | ||
4ef0d4d0 KS |
4390 | /* Edge detection matrices for different edge-detection |
4391 | strategies. */ | |
4392 | ||
4393 | static int emboss_matrix[9] = { | |
b0c396f7 JV |
4394 | /* x - 1 x x + 1 */ |
4395 | 2, -1, 0, /* y - 1 */ | |
4396 | -1, 0, 1, /* y */ | |
4397 | 0, 1, -2 /* y + 1 */ | |
4ef0d4d0 KS |
4398 | }; |
4399 | ||
4400 | static int laplace_matrix[9] = { | |
b0c396f7 JV |
4401 | /* x - 1 x x + 1 */ |
4402 | 1, 0, 0, /* y - 1 */ | |
4403 | 0, 0, 0, /* y */ | |
4404 | 0, 0, -1 /* y + 1 */ | |
4ef0d4d0 KS |
4405 | }; |
4406 | ||
4407 | /* Value is the intensity of the color whose red/green/blue values | |
4408 | are R, G, and B. */ | |
4409 | ||
4410 | #define COLOR_INTENSITY(R, G, B) ((2 * (R) + 3 * (G) + (B)) / 6) | |
4411 | ||
4412 | ||
4413 | /* On frame F, return an array of XColor structures describing image | |
4414 | IMG->pixmap. Each XColor structure has its pixel color set. RGB_P | |
4415 | non-zero means also fill the red/green/blue members of the XColor | |
4416 | structures. Value is a pointer to the array of XColors structures, | |
4417 | allocated with xmalloc; it must be freed by the caller. */ | |
4418 | ||
4419 | static XColor * | |
d3da34e0 | 4420 | x_to_xcolors (struct frame *f, struct image *img, int rgb_p) |
4ef0d4d0 KS |
4421 | { |
4422 | int x, y; | |
4423 | XColor *colors, *p; | |
4424 | XImagePtr_or_DC ximg; | |
4425 | #ifdef HAVE_NTGUI | |
4426 | HDC hdc; | |
4427 | HGDIOBJ prev; | |
4428 | #endif /* HAVE_NTGUI */ | |
4429 | ||
4430 | colors = (XColor *) xmalloc (img->width * img->height * sizeof *colors); | |
4431 | ||
4432 | #ifndef HAVE_NTGUI | |
4433 | /* Get the X image IMG->pixmap. */ | |
4434 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
4435 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
4436 | #else | |
4437 | /* Load the image into a memory device context. */ | |
4438 | hdc = get_frame_dc (f); | |
4439 | ximg = CreateCompatibleDC (hdc); | |
4440 | release_frame_dc (f, hdc); | |
4441 | prev = SelectObject (ximg, img->pixmap); | |
4442 | #endif /* HAVE_NTGUI */ | |
4443 | ||
4444 | /* Fill the `pixel' members of the XColor array. I wished there | |
4445 | were an easy and portable way to circumvent XGetPixel. */ | |
4446 | p = colors; | |
4447 | for (y = 0; y < img->height; ++y) | |
4448 | { | |
4449 | XColor *row = p; | |
4450 | ||
8b7d0a16 | 4451 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 | 4452 | for (x = 0; x < img->width; ++x, ++p) |
8b7d0a16 | 4453 | p->pixel = GET_PIXEL (ximg, x, y); |
4ef0d4d0 KS |
4454 | if (rgb_p) |
4455 | x_query_colors (f, row, img->width); | |
4456 | ||
4457 | #else | |
4458 | ||
4459 | for (x = 0; x < img->width; ++x, ++p) | |
4460 | { | |
4461 | /* W32_TODO: palette support needed here? */ | |
4462 | p->pixel = GET_PIXEL (ximg, x, y); | |
4463 | if (rgb_p) | |
4464 | { | |
4ef0d4d0 KS |
4465 | p->red = RED16_FROM_ULONG (p->pixel); |
4466 | p->green = GREEN16_FROM_ULONG (p->pixel); | |
4467 | p->blue = BLUE16_FROM_ULONG (p->pixel); | |
4ef0d4d0 KS |
4468 | } |
4469 | } | |
4470 | #endif /* HAVE_X_WINDOWS */ | |
4471 | } | |
4472 | ||
4473 | Destroy_Image (ximg, prev); | |
4474 | ||
4475 | return colors; | |
4476 | } | |
4477 | ||
4478 | #ifdef HAVE_NTGUI | |
4479 | ||
4480 | /* Put a pixel of COLOR at position X, Y in XIMG. XIMG must have been | |
4481 | created with CreateDIBSection, with the pointer to the bit values | |
4482 | stored in ximg->data. */ | |
4483 | ||
3046a84b | 4484 | static void |
7c3320d8 | 4485 | XPutPixel (XImagePtr ximg, int x, int y, COLORREF color) |
4ef0d4d0 KS |
4486 | { |
4487 | int width = ximg->info.bmiHeader.biWidth; | |
4488 | int height = ximg->info.bmiHeader.biHeight; | |
4489 | unsigned char * pixel; | |
4490 | ||
4491 | /* True color images. */ | |
4492 | if (ximg->info.bmiHeader.biBitCount == 24) | |
4493 | { | |
4494 | int rowbytes = width * 3; | |
4495 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4496 | if (rowbytes % 4) | |
4497 | rowbytes += 4 - (rowbytes % 4); | |
4498 | ||
4499 | pixel = ximg->data + y * rowbytes + x * 3; | |
4500 | /* Windows bitmaps are in BGR order. */ | |
4501 | *pixel = GetBValue (color); | |
4502 | *(pixel + 1) = GetGValue (color); | |
4503 | *(pixel + 2) = GetRValue (color); | |
4504 | } | |
4505 | /* Monochrome images. */ | |
4506 | else if (ximg->info.bmiHeader.biBitCount == 1) | |
4507 | { | |
4508 | int rowbytes = width / 8; | |
4509 | /* Ensure scanlines are aligned on 4 byte boundaries. */ | |
4510 | if (rowbytes % 4) | |
4511 | rowbytes += 4 - (rowbytes % 4); | |
4512 | pixel = ximg->data + y * rowbytes + x / 8; | |
4513 | /* Filter out palette info. */ | |
4514 | if (color & 0x00ffffff) | |
4515 | *pixel = *pixel | (1 << x % 8); | |
4516 | else | |
4517 | *pixel = *pixel & ~(1 << x % 8); | |
4518 | } | |
4519 | else | |
4520 | image_error ("XPutPixel: palette image not supported", Qnil, Qnil); | |
4521 | } | |
4522 | ||
4523 | #endif /* HAVE_NTGUI */ | |
4524 | ||
4525 | /* Create IMG->pixmap from an array COLORS of XColor structures, whose | |
4526 | RGB members are set. F is the frame on which this all happens. | |
4527 | COLORS will be freed; an existing IMG->pixmap will be freed, too. */ | |
4528 | ||
4529 | static void | |
d3da34e0 | 4530 | x_from_xcolors (struct frame *f, struct image *img, XColor *colors) |
4ef0d4d0 KS |
4531 | { |
4532 | int x, y; | |
edfda783 | 4533 | XImagePtr oimg = NULL; |
9d7112ed | 4534 | Pixmap pixmap; |
4ef0d4d0 KS |
4535 | XColor *p; |
4536 | ||
4537 | init_color_table (); | |
4538 | ||
4539 | x_create_x_image_and_pixmap (f, img->width, img->height, 0, | |
4540 | &oimg, &pixmap); | |
4541 | p = colors; | |
4542 | for (y = 0; y < img->height; ++y) | |
4543 | for (x = 0; x < img->width; ++x, ++p) | |
4544 | { | |
4545 | unsigned long pixel; | |
4546 | pixel = lookup_rgb_color (f, p->red, p->green, p->blue); | |
4547 | XPutPixel (oimg, x, y, pixel); | |
4548 | } | |
4549 | ||
4550 | xfree (colors); | |
4551 | x_clear_image_1 (f, img, 1, 0, 1); | |
4552 | ||
4553 | x_put_x_image (f, oimg, pixmap, img->width, img->height); | |
4554 | x_destroy_x_image (oimg); | |
4555 | img->pixmap = pixmap; | |
4556 | #ifdef COLOR_TABLE_SUPPORT | |
4557 | img->colors = colors_in_color_table (&img->ncolors); | |
4558 | free_color_table (); | |
4559 | #endif /* COLOR_TABLE_SUPPORT */ | |
4560 | } | |
4561 | ||
4562 | ||
4563 | /* On frame F, perform edge-detection on image IMG. | |
4564 | ||
4565 | MATRIX is a nine-element array specifying the transformation | |
4566 | matrix. See emboss_matrix for an example. | |
4567 | ||
4568 | COLOR_ADJUST is a color adjustment added to each pixel of the | |
4569 | outgoing image. */ | |
4570 | ||
4571 | static void | |
d3da34e0 | 4572 | x_detect_edges (struct frame *f, struct image *img, int *matrix, int color_adjust) |
4ef0d4d0 KS |
4573 | { |
4574 | XColor *colors = x_to_xcolors (f, img, 1); | |
4575 | XColor *new, *p; | |
4576 | int x, y, i, sum; | |
4577 | ||
4578 | for (i = sum = 0; i < 9; ++i) | |
1ea40aa2 | 4579 | sum += eabs (matrix[i]); |
4ef0d4d0 KS |
4580 | |
4581 | #define COLOR(A, X, Y) ((A) + (Y) * img->width + (X)) | |
4582 | ||
4583 | new = (XColor *) xmalloc (img->width * img->height * sizeof *new); | |
4584 | ||
4585 | for (y = 0; y < img->height; ++y) | |
4586 | { | |
4587 | p = COLOR (new, 0, y); | |
4588 | p->red = p->green = p->blue = 0xffff/2; | |
4589 | p = COLOR (new, img->width - 1, y); | |
4590 | p->red = p->green = p->blue = 0xffff/2; | |
4591 | } | |
4592 | ||
4593 | for (x = 1; x < img->width - 1; ++x) | |
4594 | { | |
4595 | p = COLOR (new, x, 0); | |
4596 | p->red = p->green = p->blue = 0xffff/2; | |
4597 | p = COLOR (new, x, img->height - 1); | |
4598 | p->red = p->green = p->blue = 0xffff/2; | |
4599 | } | |
4600 | ||
4601 | for (y = 1; y < img->height - 1; ++y) | |
4602 | { | |
4603 | p = COLOR (new, 1, y); | |
4604 | ||
4605 | for (x = 1; x < img->width - 1; ++x, ++p) | |
4606 | { | |
4607 | int r, g, b, y1, x1; | |
4608 | ||
4609 | r = g = b = i = 0; | |
4610 | for (y1 = y - 1; y1 < y + 2; ++y1) | |
4611 | for (x1 = x - 1; x1 < x + 2; ++x1, ++i) | |
4612 | if (matrix[i]) | |
4613 | { | |
4614 | XColor *t = COLOR (colors, x1, y1); | |
4615 | r += matrix[i] * t->red; | |
4616 | g += matrix[i] * t->green; | |
4617 | b += matrix[i] * t->blue; | |
4618 | } | |
4619 | ||
4620 | r = (r / sum + color_adjust) & 0xffff; | |
4621 | g = (g / sum + color_adjust) & 0xffff; | |
4622 | b = (b / sum + color_adjust) & 0xffff; | |
4623 | p->red = p->green = p->blue = COLOR_INTENSITY (r, g, b); | |
4624 | } | |
4625 | } | |
4626 | ||
4627 | xfree (colors); | |
4628 | x_from_xcolors (f, img, new); | |
4629 | ||
4630 | #undef COLOR | |
4631 | } | |
4632 | ||
4633 | ||
4634 | /* Perform the pre-defined `emboss' edge-detection on image IMG | |
4635 | on frame F. */ | |
4636 | ||
4637 | static void | |
d3da34e0 | 4638 | x_emboss (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4639 | { |
4640 | x_detect_edges (f, img, emboss_matrix, 0xffff / 2); | |
4641 | } | |
4642 | ||
4643 | ||
4644 | /* Transform image IMG which is used on frame F with a Laplace | |
4645 | edge-detection algorithm. The result is an image that can be used | |
4646 | to draw disabled buttons, for example. */ | |
4647 | ||
4648 | static void | |
d3da34e0 | 4649 | x_laplace (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4650 | { |
4651 | x_detect_edges (f, img, laplace_matrix, 45000); | |
4652 | } | |
4653 | ||
4654 | ||
4655 | /* Perform edge-detection on image IMG on frame F, with specified | |
4656 | transformation matrix MATRIX and color-adjustment COLOR_ADJUST. | |
4657 | ||
4658 | MATRIX must be either | |
4659 | ||
4660 | - a list of at least 9 numbers in row-major form | |
4661 | - a vector of at least 9 numbers | |
4662 | ||
4663 | COLOR_ADJUST nil means use a default; otherwise it must be a | |
4664 | number. */ | |
4665 | ||
4666 | static void | |
d3da34e0 JB |
4667 | x_edge_detection (struct frame *f, struct image *img, Lisp_Object matrix, |
4668 | Lisp_Object color_adjust) | |
4ef0d4d0 KS |
4669 | { |
4670 | int i = 0; | |
4671 | int trans[9]; | |
4672 | ||
4673 | if (CONSP (matrix)) | |
4674 | { | |
4675 | for (i = 0; | |
4676 | i < 9 && CONSP (matrix) && NUMBERP (XCAR (matrix)); | |
4677 | ++i, matrix = XCDR (matrix)) | |
4678 | trans[i] = XFLOATINT (XCAR (matrix)); | |
4679 | } | |
4680 | else if (VECTORP (matrix) && ASIZE (matrix) >= 9) | |
4681 | { | |
4682 | for (i = 0; i < 9 && NUMBERP (AREF (matrix, i)); ++i) | |
4683 | trans[i] = XFLOATINT (AREF (matrix, i)); | |
4684 | } | |
4685 | ||
4686 | if (NILP (color_adjust)) | |
4687 | color_adjust = make_number (0xffff / 2); | |
4688 | ||
4689 | if (i == 9 && NUMBERP (color_adjust)) | |
4690 | x_detect_edges (f, img, trans, (int) XFLOATINT (color_adjust)); | |
4691 | } | |
4692 | ||
4693 | ||
4694 | /* Transform image IMG on frame F so that it looks disabled. */ | |
4695 | ||
4696 | static void | |
d3da34e0 | 4697 | x_disable_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
4698 | { |
4699 | Display_Info *dpyinfo = FRAME_X_DISPLAY_INFO (f); | |
4700 | #ifdef HAVE_NTGUI | |
4701 | int n_planes = dpyinfo->n_planes * dpyinfo->n_cbits; | |
4702 | #else | |
4703 | int n_planes = dpyinfo->n_planes; | |
4704 | #endif /* HAVE_NTGUI */ | |
4705 | ||
4706 | if (n_planes >= 2) | |
4707 | { | |
4708 | /* Color (or grayscale). Convert to gray, and equalize. Just | |
4709 | drawing such images with a stipple can look very odd, so | |
4710 | we're using this method instead. */ | |
4711 | XColor *colors = x_to_xcolors (f, img, 1); | |
4712 | XColor *p, *end; | |
4713 | const int h = 15000; | |
4714 | const int l = 30000; | |
4715 | ||
4716 | for (p = colors, end = colors + img->width * img->height; | |
4717 | p < end; | |
4718 | ++p) | |
4719 | { | |
4720 | int i = COLOR_INTENSITY (p->red, p->green, p->blue); | |
4721 | int i2 = (0xffff - h - l) * i / 0xffff + l; | |
4722 | p->red = p->green = p->blue = i2; | |
4723 | } | |
4724 | ||
4725 | x_from_xcolors (f, img, colors); | |
4726 | } | |
4727 | ||
4728 | /* Draw a cross over the disabled image, if we must or if we | |
4729 | should. */ | |
4730 | if (n_planes < 2 || cross_disabled_images) | |
4731 | { | |
4732 | #ifndef HAVE_NTGUI | |
4733 | Display *dpy = FRAME_X_DISPLAY (f); | |
4734 | GC gc; | |
4735 | ||
5afa3a81 | 4736 | #ifndef HAVE_NS /* TODO: NS support, however this not needed for toolbars */ |
edfda783 | 4737 | |
4ef0d4d0 | 4738 | #define MaskForeground(f) WHITE_PIX_DEFAULT (f) |
4ef0d4d0 | 4739 | |
ae8279db | 4740 | gc = XCreateGC (dpy, img->pixmap, 0, NULL); |
4ef0d4d0 KS |
4741 | XSetForeground (dpy, gc, BLACK_PIX_DEFAULT (f)); |
4742 | XDrawLine (dpy, img->pixmap, gc, 0, 0, | |
4743 | img->width - 1, img->height - 1); | |
4744 | XDrawLine (dpy, img->pixmap, gc, 0, img->height - 1, | |
4745 | img->width - 1, 0); | |
4746 | XFreeGC (dpy, gc); | |
4747 | ||
4748 | if (img->mask) | |
4749 | { | |
ae8279db | 4750 | gc = XCreateGC (dpy, img->mask, 0, NULL); |
4ef0d4d0 KS |
4751 | XSetForeground (dpy, gc, MaskForeground (f)); |
4752 | XDrawLine (dpy, img->mask, gc, 0, 0, | |
4753 | img->width - 1, img->height - 1); | |
4754 | XDrawLine (dpy, img->mask, gc, 0, img->height - 1, | |
4755 | img->width - 1, 0); | |
4756 | XFreeGC (dpy, gc); | |
4757 | } | |
edfda783 | 4758 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4759 | #else |
4760 | HDC hdc, bmpdc; | |
4761 | HGDIOBJ prev; | |
4762 | ||
4763 | hdc = get_frame_dc (f); | |
4764 | bmpdc = CreateCompatibleDC (hdc); | |
4765 | release_frame_dc (f, hdc); | |
4766 | ||
4767 | prev = SelectObject (bmpdc, img->pixmap); | |
4768 | ||
4769 | SetTextColor (bmpdc, BLACK_PIX_DEFAULT (f)); | |
4770 | MoveToEx (bmpdc, 0, 0, NULL); | |
4771 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4772 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4773 | LineTo (bmpdc, img->width - 1, 0); | |
4774 | ||
4775 | if (img->mask) | |
4776 | { | |
4777 | SelectObject (bmpdc, img->mask); | |
4778 | SetTextColor (bmpdc, WHITE_PIX_DEFAULT (f)); | |
4779 | MoveToEx (bmpdc, 0, 0, NULL); | |
4780 | LineTo (bmpdc, img->width - 1, img->height - 1); | |
4781 | MoveToEx (bmpdc, 0, img->height - 1, NULL); | |
4782 | LineTo (bmpdc, img->width - 1, 0); | |
4783 | } | |
4784 | SelectObject (bmpdc, prev); | |
4785 | DeleteDC (bmpdc); | |
4786 | #endif /* HAVE_NTGUI */ | |
4787 | } | |
4788 | } | |
4789 | ||
4790 | ||
4791 | /* Build a mask for image IMG which is used on frame F. FILE is the | |
4792 | name of an image file, for error messages. HOW determines how to | |
4793 | determine the background color of IMG. If it is a list '(R G B)', | |
4794 | with R, G, and B being integers >= 0, take that as the color of the | |
4795 | background. Otherwise, determine the background color of IMG | |
4796 | heuristically. Value is non-zero if successful. */ | |
4797 | ||
4798 | static int | |
d3da34e0 | 4799 | x_build_heuristic_mask (struct frame *f, struct image *img, Lisp_Object how) |
4ef0d4d0 KS |
4800 | { |
4801 | XImagePtr_or_DC ximg; | |
4802 | #ifndef HAVE_NTGUI | |
4803 | XImagePtr mask_img; | |
4804 | #else | |
4805 | HDC frame_dc; | |
4806 | HGDIOBJ prev; | |
4807 | char *mask_img; | |
4808 | int row_width; | |
4809 | #endif /* HAVE_NTGUI */ | |
4810 | int x, y, rc, use_img_background; | |
4811 | unsigned long bg = 0; | |
4812 | ||
4813 | if (img->mask) | |
4814 | { | |
4815 | Free_Pixmap (FRAME_X_DISPLAY (f), img->mask); | |
4816 | img->mask = NO_PIXMAP; | |
4817 | img->background_transparent_valid = 0; | |
4818 | } | |
4819 | ||
4820 | #ifndef HAVE_NTGUI | |
edfda783 | 4821 | #ifndef HAVE_NS |
4ef0d4d0 KS |
4822 | /* Create an image and pixmap serving as mask. */ |
4823 | rc = x_create_x_image_and_pixmap (f, img->width, img->height, 1, | |
4824 | &mask_img, &img->mask); | |
4825 | if (!rc) | |
4826 | return 0; | |
edfda783 | 4827 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4828 | |
4829 | /* Get the X image of IMG->pixmap. */ | |
4830 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, 0, 0, | |
4831 | img->width, img->height, | |
4832 | ~0, ZPixmap); | |
4833 | #else | |
4834 | /* Create the bit array serving as mask. */ | |
4835 | row_width = (img->width + 7) / 8; | |
4836 | mask_img = xmalloc (row_width * img->height); | |
72af86bd | 4837 | memset (mask_img, 0, row_width * img->height); |
4ef0d4d0 KS |
4838 | |
4839 | /* Create a memory device context for IMG->pixmap. */ | |
4840 | frame_dc = get_frame_dc (f); | |
4841 | ximg = CreateCompatibleDC (frame_dc); | |
4842 | release_frame_dc (f, frame_dc); | |
4843 | prev = SelectObject (ximg, img->pixmap); | |
4844 | #endif /* HAVE_NTGUI */ | |
4845 | ||
4846 | /* Determine the background color of ximg. If HOW is `(R G B)' | |
4847 | take that as color. Otherwise, use the image's background color. */ | |
4848 | use_img_background = 1; | |
4849 | ||
4850 | if (CONSP (how)) | |
4851 | { | |
4852 | int rgb[3], i; | |
4853 | ||
4854 | for (i = 0; i < 3 && CONSP (how) && NATNUMP (XCAR (how)); ++i) | |
4855 | { | |
4856 | rgb[i] = XFASTINT (XCAR (how)) & 0xffff; | |
4857 | how = XCDR (how); | |
4858 | } | |
4859 | ||
4860 | if (i == 3 && NILP (how)) | |
4861 | { | |
4862 | char color_name[30]; | |
4863 | sprintf (color_name, "#%04x%04x%04x", rgb[0], rgb[1], rgb[2]); | |
4864 | bg = ( | |
4865 | #ifdef HAVE_NTGUI | |
4866 | 0x00ffffff & /* Filter out palette info. */ | |
4867 | #endif /* HAVE_NTGUI */ | |
4868 | x_alloc_image_color (f, img, build_string (color_name), 0)); | |
4869 | use_img_background = 0; | |
4870 | } | |
4871 | } | |
4872 | ||
4873 | if (use_img_background) | |
6ac3c7bb | 4874 | bg = four_corners_best (ximg, img->corners, img->width, img->height); |
4ef0d4d0 KS |
4875 | |
4876 | /* Set all bits in mask_img to 1 whose color in ximg is different | |
4877 | from the background color bg. */ | |
4878 | #ifndef HAVE_NTGUI | |
4879 | for (y = 0; y < img->height; ++y) | |
4880 | for (x = 0; x < img->width; ++x) | |
edfda783 | 4881 | #ifndef HAVE_NS |
4ef0d4d0 | 4882 | XPutPixel (mask_img, x, y, (XGetPixel (ximg, x, y) != bg |
9ecf6403 | 4883 | ? PIX_MASK_DRAW : PIX_MASK_RETAIN)); |
edfda783 AR |
4884 | #else |
4885 | if (XGetPixel (ximg, x, y) == bg) | |
ed3751c8 | 4886 | ns_set_alpha (ximg, x, y, 0); |
edfda783 AR |
4887 | #endif /* HAVE_NS */ |
4888 | #ifndef HAVE_NS | |
4ef0d4d0 KS |
4889 | /* Fill in the background_transparent field while we have the mask handy. */ |
4890 | image_background_transparent (img, f, mask_img); | |
4891 | ||
4892 | /* Put mask_img into img->mask. */ | |
4893 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
4894 | x_destroy_x_image (mask_img); | |
edfda783 | 4895 | #endif /* !HAVE_NS */ |
4ef0d4d0 KS |
4896 | #else |
4897 | for (y = 0; y < img->height; ++y) | |
4898 | for (x = 0; x < img->width; ++x) | |
4899 | { | |
4900 | COLORREF p = GetPixel (ximg, x, y); | |
4901 | if (p != bg) | |
4902 | mask_img[y * row_width + x / 8] |= 1 << (x % 8); | |
4903 | } | |
4904 | ||
4905 | /* Create the mask image. */ | |
4906 | img->mask = w32_create_pixmap_from_bitmap_data (img->width, img->height, | |
4907 | mask_img); | |
4908 | /* Fill in the background_transparent field while we have the mask handy. */ | |
4909 | SelectObject (ximg, img->mask); | |
4910 | image_background_transparent (img, f, ximg); | |
4911 | ||
4912 | /* Was: x_destroy_x_image ((XImagePtr )mask_img); which seems bogus ++kfs */ | |
4913 | xfree (mask_img); | |
4914 | #endif /* HAVE_NTGUI */ | |
4915 | ||
4916 | Destroy_Image (ximg, prev); | |
4917 | ||
4918 | return 1; | |
4919 | } | |
4920 | ||
4921 | \f | |
4922 | /*********************************************************************** | |
4923 | PBM (mono, gray, color) | |
b0c396f7 | 4924 | ***********************************************************************/ |
4ef0d4d0 | 4925 | |
f57e2426 J |
4926 | static int pbm_image_p (Lisp_Object object); |
4927 | static int pbm_load (struct frame *f, struct image *img); | |
4928 | static int pbm_scan_number (unsigned char **, unsigned char *); | |
4ef0d4d0 KS |
4929 | |
4930 | /* The symbol `pbm' identifying images of this type. */ | |
4931 | ||
4932 | Lisp_Object Qpbm; | |
4933 | ||
4934 | /* Indices of image specification fields in gs_format, below. */ | |
4935 | ||
4936 | enum pbm_keyword_index | |
b0c396f7 JV |
4937 | { |
4938 | PBM_TYPE, | |
4939 | PBM_FILE, | |
4940 | PBM_DATA, | |
4941 | PBM_ASCENT, | |
4942 | PBM_MARGIN, | |
4943 | PBM_RELIEF, | |
4944 | PBM_ALGORITHM, | |
4945 | PBM_HEURISTIC_MASK, | |
4946 | PBM_MASK, | |
4947 | PBM_FOREGROUND, | |
4948 | PBM_BACKGROUND, | |
4949 | PBM_LAST | |
4950 | }; | |
4ef0d4d0 KS |
4951 | |
4952 | /* Vector of image_keyword structures describing the format | |
4953 | of valid user-defined image specifications. */ | |
4954 | ||
91433552 | 4955 | static const struct image_keyword pbm_format[PBM_LAST] = |
b0c396f7 JV |
4956 | { |
4957 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
4958 | {":file", IMAGE_STRING_VALUE, 0}, | |
4959 | {":data", IMAGE_STRING_VALUE, 0}, | |
4960 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
4961 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
4962 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
4963 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4964 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4965 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
4966 | {":foreground", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
4967 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
4968 | }; | |
4ef0d4d0 KS |
4969 | |
4970 | /* Structure describing the image type `pbm'. */ | |
4971 | ||
4972 | static struct image_type pbm_type = | |
b0c396f7 JV |
4973 | { |
4974 | &Qpbm, | |
4975 | pbm_image_p, | |
4976 | pbm_load, | |
4977 | x_clear_image, | |
4978 | NULL | |
4979 | }; | |
4ef0d4d0 KS |
4980 | |
4981 | ||
4982 | /* Return non-zero if OBJECT is a valid PBM image specification. */ | |
4983 | ||
4984 | static int | |
d3da34e0 | 4985 | pbm_image_p (Lisp_Object object) |
4ef0d4d0 KS |
4986 | { |
4987 | struct image_keyword fmt[PBM_LAST]; | |
4988 | ||
72af86bd | 4989 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
4990 | |
4991 | if (!parse_image_spec (object, fmt, PBM_LAST, Qpbm)) | |
4992 | return 0; | |
4993 | ||
4994 | /* Must specify either :data or :file. */ | |
4995 | return fmt[PBM_DATA].count + fmt[PBM_FILE].count == 1; | |
4996 | } | |
4997 | ||
4998 | ||
4999 | /* Scan a decimal number from *S and return it. Advance *S while | |
5000 | reading the number. END is the end of the string. Value is -1 at | |
5001 | end of input. */ | |
5002 | ||
5003 | static int | |
d3da34e0 | 5004 | pbm_scan_number (unsigned char **s, unsigned char *end) |
4ef0d4d0 KS |
5005 | { |
5006 | int c = 0, val = -1; | |
5007 | ||
5008 | while (*s < end) | |
5009 | { | |
5010 | /* Skip white-space. */ | |
5011 | while (*s < end && (c = *(*s)++, isspace (c))) | |
5012 | ; | |
5013 | ||
5014 | if (c == '#') | |
5015 | { | |
5016 | /* Skip comment to end of line. */ | |
5017 | while (*s < end && (c = *(*s)++, c != '\n')) | |
5018 | ; | |
5019 | } | |
5020 | else if (isdigit (c)) | |
5021 | { | |
5022 | /* Read decimal number. */ | |
5023 | val = c - '0'; | |
5024 | while (*s < end && (c = *(*s)++, isdigit (c))) | |
5025 | val = 10 * val + c - '0'; | |
5026 | break; | |
5027 | } | |
5028 | else | |
5029 | break; | |
5030 | } | |
5031 | ||
5032 | return val; | |
5033 | } | |
5034 | ||
5035 | ||
5036 | #ifdef HAVE_NTGUI | |
5037 | #if 0 /* Unused. ++kfs */ | |
5038 | ||
5039 | /* Read FILE into memory. Value is a pointer to a buffer allocated | |
5040 | with xmalloc holding FILE's contents. Value is null if an error | |
5041 | occurred. *SIZE is set to the size of the file. */ | |
5042 | ||
5043 | static char * | |
5044 | pbm_read_file (file, size) | |
5045 | Lisp_Object file; | |
5046 | int *size; | |
5047 | { | |
5048 | FILE *fp = NULL; | |
5049 | char *buf = NULL; | |
5050 | struct stat st; | |
5051 | ||
5052 | if (stat (SDATA (file), &st) == 0 | |
5053 | && (fp = fopen (SDATA (file), "rb")) != NULL | |
5054 | && (buf = (char *) xmalloc (st.st_size), | |
5055 | fread (buf, 1, st.st_size, fp) == st.st_size)) | |
5056 | { | |
5057 | *size = st.st_size; | |
5058 | fclose (fp); | |
5059 | } | |
5060 | else | |
5061 | { | |
5062 | if (fp) | |
5063 | fclose (fp); | |
5064 | if (buf) | |
5065 | { | |
5066 | xfree (buf); | |
5067 | buf = NULL; | |
5068 | } | |
5069 | } | |
5070 | ||
5071 | return buf; | |
5072 | } | |
5073 | #endif | |
5074 | #endif /* HAVE_NTGUI */ | |
5075 | ||
5076 | /* Load PBM image IMG for use on frame F. */ | |
5077 | ||
5078 | static int | |
d3da34e0 | 5079 | pbm_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5080 | { |
5081 | int raw_p, x, y; | |
5082 | int width, height, max_color_idx = 0; | |
5083 | XImagePtr ximg; | |
5084 | Lisp_Object file, specified_file; | |
5085 | enum {PBM_MONO, PBM_GRAY, PBM_COLOR} type; | |
4ef0d4d0 KS |
5086 | unsigned char *contents = NULL; |
5087 | unsigned char *end, *p; | |
5088 | int size; | |
5089 | ||
5090 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
4ef0d4d0 KS |
5091 | |
5092 | if (STRINGP (specified_file)) | |
5093 | { | |
5094 | file = x_find_image_file (specified_file); | |
5095 | if (!STRINGP (file)) | |
5096 | { | |
5097 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5098 | return 0; |
5099 | } | |
5100 | ||
42a5b22f | 5101 | contents = slurp_file (SSDATA (file), &size); |
4ef0d4d0 KS |
5102 | if (contents == NULL) |
5103 | { | |
5104 | image_error ("Error reading `%s'", file, Qnil); | |
4ef0d4d0 KS |
5105 | return 0; |
5106 | } | |
5107 | ||
5108 | p = contents; | |
5109 | end = contents + size; | |
5110 | } | |
5111 | else | |
5112 | { | |
5113 | Lisp_Object data; | |
5114 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
5115 | if (!STRINGP (data)) |
5116 | { | |
5117 | image_error ("Invalid image data `%s'", data, Qnil); | |
5118 | return 0; | |
5119 | } | |
4ef0d4d0 KS |
5120 | p = SDATA (data); |
5121 | end = p + SBYTES (data); | |
5122 | } | |
5123 | ||
5124 | /* Check magic number. */ | |
5125 | if (end - p < 2 || *p++ != 'P') | |
5126 | { | |
5127 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5128 | error: | |
5129 | xfree (contents); | |
4ef0d4d0 KS |
5130 | return 0; |
5131 | } | |
5132 | ||
5133 | switch (*p++) | |
5134 | { | |
5135 | case '1': | |
5136 | raw_p = 0, type = PBM_MONO; | |
5137 | break; | |
5138 | ||
5139 | case '2': | |
5140 | raw_p = 0, type = PBM_GRAY; | |
5141 | break; | |
5142 | ||
5143 | case '3': | |
5144 | raw_p = 0, type = PBM_COLOR; | |
5145 | break; | |
5146 | ||
5147 | case '4': | |
5148 | raw_p = 1, type = PBM_MONO; | |
5149 | break; | |
5150 | ||
5151 | case '5': | |
5152 | raw_p = 1, type = PBM_GRAY; | |
5153 | break; | |
5154 | ||
5155 | case '6': | |
5156 | raw_p = 1, type = PBM_COLOR; | |
5157 | break; | |
5158 | ||
5159 | default: | |
5160 | image_error ("Not a PBM image: `%s'", img->spec, Qnil); | |
5161 | goto error; | |
5162 | } | |
5163 | ||
5164 | /* Read width, height, maximum color-component. Characters | |
5165 | starting with `#' up to the end of a line are ignored. */ | |
5166 | width = pbm_scan_number (&p, end); | |
5167 | height = pbm_scan_number (&p, end); | |
5168 | ||
5169 | if (type != PBM_MONO) | |
5170 | { | |
5171 | max_color_idx = pbm_scan_number (&p, end); | |
b9c89e11 JR |
5172 | if (max_color_idx > 65535 || max_color_idx < 0) |
5173 | { | |
5174 | image_error ("Unsupported maximum PBM color value", Qnil, Qnil); | |
5175 | goto error; | |
5176 | } | |
4ef0d4d0 KS |
5177 | } |
5178 | ||
b9c89e11 JR |
5179 | if (!check_image_size (f, width, height)) |
5180 | { | |
10ea2b82 | 5181 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
b9c89e11 JR |
5182 | goto error; |
5183 | } | |
4ef0d4d0 KS |
5184 | |
5185 | if (!x_create_x_image_and_pixmap (f, width, height, 0, | |
5186 | &ximg, &img->pixmap)) | |
5187 | goto error; | |
5188 | ||
5189 | /* Initialize the color hash table. */ | |
5190 | init_color_table (); | |
5191 | ||
5192 | if (type == PBM_MONO) | |
5193 | { | |
5194 | int c = 0, g; | |
5195 | struct image_keyword fmt[PBM_LAST]; | |
5196 | unsigned long fg = FRAME_FOREGROUND_PIXEL (f); | |
5197 | unsigned long bg = FRAME_BACKGROUND_PIXEL (f); | |
5198 | ||
5199 | /* Parse the image specification. */ | |
72af86bd | 5200 | memcpy (fmt, pbm_format, sizeof fmt); |
4ef0d4d0 KS |
5201 | parse_image_spec (img->spec, fmt, PBM_LAST, Qpbm); |
5202 | ||
5203 | /* Get foreground and background colors, maybe allocate colors. */ | |
5204 | if (fmt[PBM_FOREGROUND].count | |
5205 | && STRINGP (fmt[PBM_FOREGROUND].value)) | |
5206 | fg = x_alloc_image_color (f, img, fmt[PBM_FOREGROUND].value, fg); | |
5207 | if (fmt[PBM_BACKGROUND].count | |
5208 | && STRINGP (fmt[PBM_BACKGROUND].value)) | |
5209 | { | |
5210 | bg = x_alloc_image_color (f, img, fmt[PBM_BACKGROUND].value, bg); | |
5211 | img->background = bg; | |
5212 | img->background_valid = 1; | |
5213 | } | |
5214 | ||
5215 | for (y = 0; y < height; ++y) | |
5216 | for (x = 0; x < width; ++x) | |
5217 | { | |
5218 | if (raw_p) | |
5219 | { | |
5220 | if ((x & 7) == 0) | |
c295e710 CY |
5221 | { |
5222 | if (p >= end) | |
5223 | { | |
5224 | x_destroy_x_image (ximg); | |
5225 | x_clear_image (f, img); | |
5226 | image_error ("Invalid image size in image `%s'", | |
5227 | img->spec, Qnil); | |
5228 | goto error; | |
5229 | } | |
5230 | c = *p++; | |
5231 | } | |
4ef0d4d0 KS |
5232 | g = c & 0x80; |
5233 | c <<= 1; | |
5234 | } | |
5235 | else | |
5236 | g = pbm_scan_number (&p, end); | |
5237 | ||
5238 | XPutPixel (ximg, x, y, g ? fg : bg); | |
5239 | } | |
5240 | } | |
5241 | else | |
5242 | { | |
b9c89e11 JR |
5243 | int expected_size = height * width; |
5244 | if (max_color_idx > 255) | |
5245 | expected_size *= 2; | |
5246 | if (type == PBM_COLOR) | |
5247 | expected_size *= 3; | |
5248 | ||
5249 | if (raw_p && p + expected_size > end) | |
39e653ea CY |
5250 | { |
5251 | x_destroy_x_image (ximg); | |
fb0b0862 | 5252 | x_clear_image (f, img); |
39e653ea CY |
5253 | image_error ("Invalid image size in image `%s'", |
5254 | img->spec, Qnil); | |
5255 | goto error; | |
5256 | } | |
5257 | ||
4ef0d4d0 KS |
5258 | for (y = 0; y < height; ++y) |
5259 | for (x = 0; x < width; ++x) | |
5260 | { | |
5261 | int r, g, b; | |
5262 | ||
b9c89e11 JR |
5263 | if (type == PBM_GRAY && raw_p) |
5264 | { | |
5265 | r = g = b = *p++; | |
5266 | if (max_color_idx > 255) | |
5267 | r = g = b = r * 256 + *p++; | |
5268 | } | |
5269 | else if (type == PBM_GRAY) | |
5270 | r = g = b = pbm_scan_number (&p, end); | |
4ef0d4d0 KS |
5271 | else if (raw_p) |
5272 | { | |
5273 | r = *p++; | |
b9c89e11 JR |
5274 | if (max_color_idx > 255) |
5275 | r = r * 256 + *p++; | |
4ef0d4d0 | 5276 | g = *p++; |
b9c89e11 JR |
5277 | if (max_color_idx > 255) |
5278 | g = g * 256 + *p++; | |
4ef0d4d0 | 5279 | b = *p++; |
b9c89e11 JR |
5280 | if (max_color_idx > 255) |
5281 | b = b * 256 + *p++; | |
4ef0d4d0 KS |
5282 | } |
5283 | else | |
5284 | { | |
5285 | r = pbm_scan_number (&p, end); | |
5286 | g = pbm_scan_number (&p, end); | |
5287 | b = pbm_scan_number (&p, end); | |
5288 | } | |
5289 | ||
5290 | if (r < 0 || g < 0 || b < 0) | |
5291 | { | |
5292 | x_destroy_x_image (ximg); | |
5293 | image_error ("Invalid pixel value in image `%s'", | |
5294 | img->spec, Qnil); | |
5295 | goto error; | |
5296 | } | |
5297 | ||
5298 | /* RGB values are now in the range 0..max_color_idx. | |
5299 | Scale this to the range 0..0xffff supported by X. */ | |
5300 | r = (double) r * 65535 / max_color_idx; | |
5301 | g = (double) g * 65535 / max_color_idx; | |
5302 | b = (double) b * 65535 / max_color_idx; | |
5303 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5304 | } | |
5305 | } | |
5306 | ||
5307 | #ifdef COLOR_TABLE_SUPPORT | |
5308 | /* Store in IMG->colors the colors allocated for the image, and | |
5309 | free the color table. */ | |
5310 | img->colors = colors_in_color_table (&img->ncolors); | |
5311 | free_color_table (); | |
5312 | #endif /* COLOR_TABLE_SUPPORT */ | |
5313 | ||
5314 | img->width = width; | |
5315 | img->height = height; | |
5316 | ||
5317 | /* Maybe fill in the background field while we have ximg handy. */ | |
5318 | ||
5319 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
5320 | /* Casting avoids a GCC warning. */ |
5321 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5322 | |
5323 | /* Put the image into a pixmap. */ | |
5324 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5325 | x_destroy_x_image (ximg); | |
5326 | ||
5327 | /* X and W32 versions did it here, MAC version above. ++kfs | |
1f026899 | 5328 | img->width = width; |
4ef0d4d0 KS |
5329 | img->height = height; */ |
5330 | ||
4ef0d4d0 KS |
5331 | xfree (contents); |
5332 | return 1; | |
5333 | } | |
5334 | ||
5335 | \f | |
5336 | /*********************************************************************** | |
5337 | PNG | |
b0c396f7 | 5338 | ***********************************************************************/ |
4ef0d4d0 | 5339 | |
9e2a2647 | 5340 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
4ef0d4d0 KS |
5341 | |
5342 | /* Function prototypes. */ | |
5343 | ||
f57e2426 J |
5344 | static int png_image_p (Lisp_Object object); |
5345 | static int png_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5346 | |
5347 | /* The symbol `png' identifying images of this type. */ | |
5348 | ||
5349 | Lisp_Object Qpng; | |
5350 | ||
5351 | /* Indices of image specification fields in png_format, below. */ | |
5352 | ||
5353 | enum png_keyword_index | |
b0c396f7 JV |
5354 | { |
5355 | PNG_TYPE, | |
5356 | PNG_DATA, | |
5357 | PNG_FILE, | |
5358 | PNG_ASCENT, | |
5359 | PNG_MARGIN, | |
5360 | PNG_RELIEF, | |
5361 | PNG_ALGORITHM, | |
5362 | PNG_HEURISTIC_MASK, | |
5363 | PNG_MASK, | |
5364 | PNG_BACKGROUND, | |
5365 | PNG_LAST | |
5366 | }; | |
4ef0d4d0 KS |
5367 | |
5368 | /* Vector of image_keyword structures describing the format | |
5369 | of valid user-defined image specifications. */ | |
5370 | ||
91433552 | 5371 | static const struct image_keyword png_format[PNG_LAST] = |
b0c396f7 JV |
5372 | { |
5373 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5374 | {":data", IMAGE_STRING_VALUE, 0}, | |
5375 | {":file", IMAGE_STRING_VALUE, 0}, | |
5376 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5377 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5378 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5379 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5380 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5381 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5382 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5383 | }; | |
4ef0d4d0 KS |
5384 | |
5385 | /* Structure describing the image type `png'. */ | |
5386 | ||
5387 | static struct image_type png_type = | |
b0c396f7 JV |
5388 | { |
5389 | &Qpng, | |
5390 | png_image_p, | |
5391 | png_load, | |
5392 | x_clear_image, | |
5393 | NULL | |
5394 | }; | |
4ef0d4d0 KS |
5395 | |
5396 | /* Return non-zero if OBJECT is a valid PNG image specification. */ | |
5397 | ||
5398 | static int | |
d3da34e0 | 5399 | png_image_p (Lisp_Object object) |
4ef0d4d0 KS |
5400 | { |
5401 | struct image_keyword fmt[PNG_LAST]; | |
72af86bd | 5402 | memcpy (fmt, png_format, sizeof fmt); |
4ef0d4d0 KS |
5403 | |
5404 | if (!parse_image_spec (object, fmt, PNG_LAST, Qpng)) | |
5405 | return 0; | |
5406 | ||
5407 | /* Must specify either the :data or :file keyword. */ | |
5408 | return fmt[PNG_FILE].count + fmt[PNG_DATA].count == 1; | |
5409 | } | |
5410 | ||
9e2a2647 | 5411 | #endif /* HAVE_PNG || HAVE_NS */ |
4ef0d4d0 KS |
5412 | |
5413 | ||
5414 | #ifdef HAVE_PNG | |
5415 | ||
4ef0d4d0 KS |
5416 | #ifdef HAVE_NTGUI |
5417 | /* PNG library details. */ | |
5418 | ||
14beddf4 CY |
5419 | DEF_IMGLIB_FN (png_voidp, png_get_io_ptr, (png_structp)); |
5420 | DEF_IMGLIB_FN (int, png_sig_cmp, (png_bytep, png_size_t, png_size_t)); | |
5421 | DEF_IMGLIB_FN (png_structp, png_create_read_struct, (png_const_charp, png_voidp, | |
5422 | png_error_ptr, png_error_ptr)); | |
5423 | DEF_IMGLIB_FN (png_infop, png_create_info_struct, (png_structp)); | |
5424 | DEF_IMGLIB_FN (void, png_destroy_read_struct, (png_structpp, png_infopp, png_infopp)); | |
5425 | DEF_IMGLIB_FN (void, png_set_read_fn, (png_structp, png_voidp, png_rw_ptr)); | |
5426 | DEF_IMGLIB_FN (void, png_set_sig_bytes, (png_structp, int)); | |
5427 | DEF_IMGLIB_FN (void, png_read_info, (png_structp, png_infop)); | |
5428 | DEF_IMGLIB_FN (png_uint_32, png_get_IHDR, (png_structp, png_infop, | |
850690cc JB |
5429 | png_uint_32 *, png_uint_32 *, |
5430 | int *, int *, int *, int *, int *)); | |
14beddf4 CY |
5431 | DEF_IMGLIB_FN (png_uint_32, png_get_valid, (png_structp, png_infop, png_uint_32)); |
5432 | DEF_IMGLIB_FN (void, png_set_strip_16, (png_structp)); | |
5433 | DEF_IMGLIB_FN (void, png_set_expand, (png_structp)); | |
5434 | DEF_IMGLIB_FN (void, png_set_gray_to_rgb, (png_structp)); | |
5435 | DEF_IMGLIB_FN (void, png_set_background, (png_structp, png_color_16p, | |
850690cc | 5436 | int, int, double)); |
14beddf4 CY |
5437 | DEF_IMGLIB_FN (png_uint_32, png_get_bKGD, (png_structp, png_infop, png_color_16p *)); |
5438 | DEF_IMGLIB_FN (void, png_read_update_info, (png_structp, png_infop)); | |
5439 | DEF_IMGLIB_FN (png_byte, png_get_channels, (png_structp, png_infop)); | |
5440 | DEF_IMGLIB_FN (png_size_t, png_get_rowbytes, (png_structp, png_infop)); | |
5441 | DEF_IMGLIB_FN (void, png_read_image, (png_structp, png_bytepp)); | |
5442 | DEF_IMGLIB_FN (void, png_read_end, (png_structp, png_infop)); | |
5443 | DEF_IMGLIB_FN (void, png_error, (png_structp, png_const_charp)); | |
4ef0d4d0 | 5444 | |
7f9c5df9 | 5445 | #if (PNG_LIBPNG_VER >= 10500) |
14beddf4 CY |
5446 | DEF_IMGLIB_FN (void, png_longjmp, (png_structp, int)); |
5447 | DEF_IMGLIB_FN (jmp_buf *, png_set_longjmp_fn, (png_structp, png_longjmp_ptr, size_t)); | |
7f9c5df9 | 5448 | #endif /* libpng version >= 1.5 */ |
4ef0d4d0 KS |
5449 | |
5450 | static int | |
0855eb52 | 5451 | init_png_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
5452 | { |
5453 | HMODULE library; | |
5454 | ||
4ef0d4d0 | 5455 | /* Try loading libpng under probable names. */ |
0855eb52 | 5456 | if (!(library = w32_delayed_load (libraries, Qpng))) |
4ef0d4d0 KS |
5457 | return 0; |
5458 | ||
5459 | LOAD_IMGLIB_FN (library, png_get_io_ptr); | |
285d07e2 | 5460 | LOAD_IMGLIB_FN (library, png_sig_cmp); |
4ef0d4d0 KS |
5461 | LOAD_IMGLIB_FN (library, png_create_read_struct); |
5462 | LOAD_IMGLIB_FN (library, png_create_info_struct); | |
5463 | LOAD_IMGLIB_FN (library, png_destroy_read_struct); | |
5464 | LOAD_IMGLIB_FN (library, png_set_read_fn); | |
4ef0d4d0 KS |
5465 | LOAD_IMGLIB_FN (library, png_set_sig_bytes); |
5466 | LOAD_IMGLIB_FN (library, png_read_info); | |
5467 | LOAD_IMGLIB_FN (library, png_get_IHDR); | |
5468 | LOAD_IMGLIB_FN (library, png_get_valid); | |
5469 | LOAD_IMGLIB_FN (library, png_set_strip_16); | |
5470 | LOAD_IMGLIB_FN (library, png_set_expand); | |
5471 | LOAD_IMGLIB_FN (library, png_set_gray_to_rgb); | |
5472 | LOAD_IMGLIB_FN (library, png_set_background); | |
5473 | LOAD_IMGLIB_FN (library, png_get_bKGD); | |
5474 | LOAD_IMGLIB_FN (library, png_read_update_info); | |
5475 | LOAD_IMGLIB_FN (library, png_get_channels); | |
5476 | LOAD_IMGLIB_FN (library, png_get_rowbytes); | |
5477 | LOAD_IMGLIB_FN (library, png_read_image); | |
5478 | LOAD_IMGLIB_FN (library, png_read_end); | |
5479 | LOAD_IMGLIB_FN (library, png_error); | |
7f9c5df9 CY |
5480 | |
5481 | #if (PNG_LIBPNG_VER >= 10500) | |
5482 | LOAD_IMGLIB_FN (library, png_longjmp); | |
5483 | LOAD_IMGLIB_FN (library, png_set_longjmp_fn); | |
5484 | #endif /* libpng version >= 1.5 */ | |
5485 | ||
4ef0d4d0 KS |
5486 | return 1; |
5487 | } | |
5488 | #else | |
5489 | ||
5490 | #define fn_png_get_io_ptr png_get_io_ptr | |
285d07e2 | 5491 | #define fn_png_sig_cmp png_sig_cmp |
4ef0d4d0 KS |
5492 | #define fn_png_create_read_struct png_create_read_struct |
5493 | #define fn_png_create_info_struct png_create_info_struct | |
5494 | #define fn_png_destroy_read_struct png_destroy_read_struct | |
5495 | #define fn_png_set_read_fn png_set_read_fn | |
4ef0d4d0 KS |
5496 | #define fn_png_set_sig_bytes png_set_sig_bytes |
5497 | #define fn_png_read_info png_read_info | |
5498 | #define fn_png_get_IHDR png_get_IHDR | |
5499 | #define fn_png_get_valid png_get_valid | |
5500 | #define fn_png_set_strip_16 png_set_strip_16 | |
5501 | #define fn_png_set_expand png_set_expand | |
5502 | #define fn_png_set_gray_to_rgb png_set_gray_to_rgb | |
5503 | #define fn_png_set_background png_set_background | |
5504 | #define fn_png_get_bKGD png_get_bKGD | |
5505 | #define fn_png_read_update_info png_read_update_info | |
5506 | #define fn_png_get_channels png_get_channels | |
5507 | #define fn_png_get_rowbytes png_get_rowbytes | |
5508 | #define fn_png_read_image png_read_image | |
5509 | #define fn_png_read_end png_read_end | |
5510 | #define fn_png_error png_error | |
5511 | ||
7f9c5df9 CY |
5512 | #if (PNG_LIBPNG_VER >= 10500) |
5513 | #define fn_png_longjmp png_longjmp | |
5514 | #define fn_png_set_longjmp_fn png_set_longjmp_fn | |
5515 | #endif /* libpng version >= 1.5 */ | |
5516 | ||
4ef0d4d0 KS |
5517 | #endif /* HAVE_NTGUI */ |
5518 | ||
7f9c5df9 CY |
5519 | |
5520 | #if (PNG_LIBPNG_VER < 10500) | |
c2e79cb4 | 5521 | #define PNG_LONGJMP(ptr) (longjmp ((ptr)->jmpbuf, 1)) |
7f9c5df9 CY |
5522 | #define PNG_JMPBUF(ptr) ((ptr)->jmpbuf) |
5523 | #else | |
df61c790 | 5524 | /* In libpng version 1.5, the jmpbuf member is hidden. (Bug#7908) */ |
c2e79cb4 | 5525 | #define PNG_LONGJMP(ptr) (fn_png_longjmp ((ptr), 1)) |
7f9c5df9 | 5526 | #define PNG_JMPBUF(ptr) \ |
df61c790 | 5527 | (*fn_png_set_longjmp_fn((ptr), longjmp, sizeof (jmp_buf))) |
7f9c5df9 CY |
5528 | #endif |
5529 | ||
4ef0d4d0 KS |
5530 | /* Error and warning handlers installed when the PNG library |
5531 | is initialized. */ | |
5532 | ||
5533 | static void | |
d3da34e0 | 5534 | my_png_error (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5535 | { |
5536 | xassert (png_ptr != NULL); | |
5be1c984 EZ |
5537 | /* Avoid compiler warning about deprecated direct access to |
5538 | png_ptr's fields in libpng versions 1.4.x. */ | |
4ef0d4d0 | 5539 | image_error ("PNG error: %s", build_string (msg), Qnil); |
7f9c5df9 | 5540 | PNG_LONGJMP (png_ptr); |
4ef0d4d0 KS |
5541 | } |
5542 | ||
5543 | ||
5544 | static void | |
d3da34e0 | 5545 | my_png_warning (png_struct *png_ptr, const char *msg) |
4ef0d4d0 KS |
5546 | { |
5547 | xassert (png_ptr != NULL); | |
5548 | image_error ("PNG warning: %s", build_string (msg), Qnil); | |
5549 | } | |
5550 | ||
5551 | /* Memory source for PNG decoding. */ | |
5552 | ||
5553 | struct png_memory_storage | |
5554 | { | |
5555 | unsigned char *bytes; /* The data */ | |
5556 | size_t len; /* How big is it? */ | |
5557 | int index; /* Where are we? */ | |
5558 | }; | |
5559 | ||
5560 | ||
5561 | /* Function set as reader function when reading PNG image from memory. | |
5562 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5563 | bytes from the input to DATA. */ | |
5564 | ||
5565 | static void | |
d3da34e0 | 5566 | png_read_from_memory (png_structp png_ptr, png_bytep data, png_size_t length) |
4ef0d4d0 KS |
5567 | { |
5568 | struct png_memory_storage *tbr | |
5569 | = (struct png_memory_storage *) fn_png_get_io_ptr (png_ptr); | |
5570 | ||
5571 | if (length > tbr->len - tbr->index) | |
5572 | fn_png_error (png_ptr, "Read error"); | |
5573 | ||
72af86bd | 5574 | memcpy (data, tbr->bytes + tbr->index, length); |
4ef0d4d0 KS |
5575 | tbr->index = tbr->index + length; |
5576 | } | |
5577 | ||
b0da69a7 | 5578 | |
9a22a004 JB |
5579 | /* Function set as reader function when reading PNG image from a file. |
5580 | PNG_PTR is a pointer to the PNG control structure. Copy LENGTH | |
5581 | bytes from the input to DATA. */ | |
5582 | ||
5583 | static void | |
d3da34e0 | 5584 | png_read_from_file (png_structp png_ptr, png_bytep data, png_size_t length) |
9a22a004 JB |
5585 | { |
5586 | FILE *fp = (FILE *) fn_png_get_io_ptr (png_ptr); | |
5587 | ||
5588 | if (fread (data, 1, length, fp) < length) | |
5589 | fn_png_error (png_ptr, "Read error"); | |
5590 | } | |
5591 | ||
5592 | ||
4ef0d4d0 KS |
5593 | /* Load PNG image IMG for use on frame F. Value is non-zero if |
5594 | successful. */ | |
5595 | ||
5596 | static int | |
d3da34e0 | 5597 | png_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
5598 | { |
5599 | Lisp_Object file, specified_file; | |
5600 | Lisp_Object specified_data; | |
5601 | int x, y, i; | |
5602 | XImagePtr ximg, mask_img = NULL; | |
4ef0d4d0 KS |
5603 | png_struct *png_ptr = NULL; |
5604 | png_info *info_ptr = NULL, *end_info = NULL; | |
5605 | FILE *volatile fp = NULL; | |
5606 | png_byte sig[8]; | |
5607 | png_byte * volatile pixels = NULL; | |
5608 | png_byte ** volatile rows = NULL; | |
5609 | png_uint_32 width, height; | |
5610 | int bit_depth, color_type, interlace_type; | |
5611 | png_byte channels; | |
5612 | png_uint_32 row_bytes; | |
5613 | int transparent_p; | |
4ef0d4d0 KS |
5614 | struct png_memory_storage tbr; /* Data to be read */ |
5615 | ||
5616 | /* Find out what file to load. */ | |
5617 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
5618 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
5619 | |
5620 | if (NILP (specified_data)) | |
5621 | { | |
5622 | file = x_find_image_file (specified_file); | |
5623 | if (!STRINGP (file)) | |
5624 | { | |
5625 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
5626 | return 0; |
5627 | } | |
5628 | ||
5629 | /* Open the image file. */ | |
42a5b22f | 5630 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
5631 | if (!fp) |
5632 | { | |
5633 | image_error ("Cannot open image file `%s'", file, Qnil); | |
4ef0d4d0 KS |
5634 | return 0; |
5635 | } | |
5636 | ||
5637 | /* Check PNG signature. */ | |
5638 | if (fread (sig, 1, sizeof sig, fp) != sizeof sig | |
285d07e2 | 5639 | || fn_png_sig_cmp (sig, 0, sizeof sig)) |
4ef0d4d0 KS |
5640 | { |
5641 | image_error ("Not a PNG file: `%s'", file, Qnil); | |
4ef0d4d0 KS |
5642 | fclose (fp); |
5643 | return 0; | |
5644 | } | |
5645 | } | |
5646 | else | |
5647 | { | |
7574650a AS |
5648 | if (!STRINGP (specified_data)) |
5649 | { | |
5650 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
5651 | return 0; | |
5652 | } | |
5653 | ||
4ef0d4d0 KS |
5654 | /* Read from memory. */ |
5655 | tbr.bytes = SDATA (specified_data); | |
5656 | tbr.len = SBYTES (specified_data); | |
5657 | tbr.index = 0; | |
5658 | ||
5659 | /* Check PNG signature. */ | |
5660 | if (tbr.len < sizeof sig | |
285d07e2 | 5661 | || fn_png_sig_cmp (tbr.bytes, 0, sizeof sig)) |
4ef0d4d0 KS |
5662 | { |
5663 | image_error ("Not a PNG image: `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
5664 | return 0; |
5665 | } | |
5666 | ||
5667 | /* Need to skip past the signature. */ | |
5668 | tbr.bytes += sizeof (sig); | |
5669 | } | |
5670 | ||
df61c790 AS |
5671 | /* Initialize read and info structs for PNG lib. */ |
5672 | png_ptr = fn_png_create_read_struct (PNG_LIBPNG_VER_STRING, | |
5673 | NULL, my_png_error, | |
5674 | my_png_warning); | |
4ef0d4d0 KS |
5675 | if (!png_ptr) |
5676 | { | |
5677 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5678 | return 0; |
5679 | } | |
5680 | ||
df61c790 | 5681 | info_ptr = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5682 | if (!info_ptr) |
5683 | { | |
5684 | fn_png_destroy_read_struct (&png_ptr, NULL, NULL); | |
5685 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5686 | return 0; |
5687 | } | |
5688 | ||
df61c790 | 5689 | end_info = fn_png_create_info_struct (png_ptr); |
4ef0d4d0 KS |
5690 | if (!end_info) |
5691 | { | |
5692 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, NULL); | |
5693 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5694 | return 0; |
5695 | } | |
5696 | ||
5697 | /* Set error jump-back. We come back here when the PNG library | |
5698 | detects an error. */ | |
7f9c5df9 | 5699 | if (setjmp (PNG_JMPBUF (png_ptr))) |
4ef0d4d0 KS |
5700 | { |
5701 | error: | |
5702 | if (png_ptr) | |
5703 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5704 | xfree (pixels); | |
5705 | xfree (rows); | |
5706 | if (fp) fclose (fp); | |
4ef0d4d0 KS |
5707 | return 0; |
5708 | } | |
5709 | ||
5710 | /* Read image info. */ | |
5711 | if (!NILP (specified_data)) | |
5712 | fn_png_set_read_fn (png_ptr, (void *) &tbr, png_read_from_memory); | |
5713 | else | |
9a22a004 | 5714 | fn_png_set_read_fn (png_ptr, (void *) fp, png_read_from_file); |
4ef0d4d0 KS |
5715 | |
5716 | fn_png_set_sig_bytes (png_ptr, sizeof sig); | |
5717 | fn_png_read_info (png_ptr, info_ptr); | |
5718 | fn_png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type, | |
5719 | &interlace_type, NULL, NULL); | |
5720 | ||
f1f25b99 | 5721 | if (!check_image_size (f, width, height)) |
10ea2b82 JR |
5722 | { |
5723 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
5724 | goto error; | |
5725 | } | |
4ef0d4d0 KS |
5726 | /* If image contains simply transparency data, we prefer to |
5727 | construct a clipping mask. */ | |
5728 | if (fn_png_get_valid (png_ptr, info_ptr, PNG_INFO_tRNS)) | |
5729 | transparent_p = 1; | |
5730 | else | |
5731 | transparent_p = 0; | |
5732 | ||
5733 | /* This function is easier to write if we only have to handle | |
5734 | one data format: RGB or RGBA with 8 bits per channel. Let's | |
5735 | transform other formats into that format. */ | |
5736 | ||
5737 | /* Strip more than 8 bits per channel. */ | |
5738 | if (bit_depth == 16) | |
5739 | fn_png_set_strip_16 (png_ptr); | |
5740 | ||
5741 | /* Expand data to 24 bit RGB, or 8 bit grayscale, with alpha channel | |
5742 | if available. */ | |
5743 | fn_png_set_expand (png_ptr); | |
5744 | ||
5745 | /* Convert grayscale images to RGB. */ | |
5746 | if (color_type == PNG_COLOR_TYPE_GRAY | |
5747 | || color_type == PNG_COLOR_TYPE_GRAY_ALPHA) | |
5748 | fn_png_set_gray_to_rgb (png_ptr); | |
5749 | ||
4ef0d4d0 KS |
5750 | /* Handle alpha channel by combining the image with a background |
5751 | color. Do this only if a real alpha channel is supplied. For | |
5752 | simple transparency, we prefer a clipping mask. */ | |
5753 | if (!transparent_p) | |
5754 | { | |
917ac1a9 | 5755 | /* png_color_16 *image_bg; */ |
4ef0d4d0 KS |
5756 | Lisp_Object specified_bg |
5757 | = image_spec_value (img->spec, QCbackground, NULL); | |
c4f13f44 | 5758 | int shift = (bit_depth == 16) ? 0 : 8; |
4ef0d4d0 KS |
5759 | |
5760 | if (STRINGP (specified_bg)) | |
5761 | /* The user specified `:background', use that. */ | |
5762 | { | |
4ef0d4d0 | 5763 | XColor color; |
42a5b22f | 5764 | if (x_defined_color (f, SSDATA (specified_bg), &color, 0)) |
4ef0d4d0 KS |
5765 | { |
5766 | png_color_16 user_bg; | |
5767 | ||
72af86bd | 5768 | memset (&user_bg, 0, sizeof user_bg); |
c4f13f44 CY |
5769 | user_bg.red = color.red >> shift; |
5770 | user_bg.green = color.green >> shift; | |
5771 | user_bg.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5772 | |
5773 | fn_png_set_background (png_ptr, &user_bg, | |
5774 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5775 | } | |
5776 | } | |
4ef0d4d0 KS |
5777 | else |
5778 | { | |
c4f13f44 CY |
5779 | /* We use the current frame background, ignoring any default |
5780 | background color set by the image. */ | |
8b7d0a16 | 5781 | #if defined (HAVE_X_WINDOWS) || defined (HAVE_NTGUI) |
4ef0d4d0 KS |
5782 | XColor color; |
5783 | png_color_16 frame_background; | |
5784 | ||
5785 | color.pixel = FRAME_BACKGROUND_PIXEL (f); | |
5786 | x_query_color (f, &color); | |
5787 | ||
72af86bd | 5788 | memset (&frame_background, 0, sizeof frame_background); |
c4f13f44 CY |
5789 | frame_background.red = color.red >> shift; |
5790 | frame_background.green = color.green >> shift; | |
5791 | frame_background.blue = color.blue >> shift; | |
4ef0d4d0 KS |
5792 | #endif /* HAVE_X_WINDOWS */ |
5793 | ||
4ef0d4d0 KS |
5794 | fn_png_set_background (png_ptr, &frame_background, |
5795 | PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0); | |
5796 | } | |
5797 | } | |
5798 | ||
5799 | /* Update info structure. */ | |
5800 | fn_png_read_update_info (png_ptr, info_ptr); | |
5801 | ||
5802 | /* Get number of channels. Valid values are 1 for grayscale images | |
5803 | and images with a palette, 2 for grayscale images with transparency | |
5804 | information (alpha channel), 3 for RGB images, and 4 for RGB | |
5805 | images with alpha channel, i.e. RGBA. If conversions above were | |
5806 | sufficient we should only have 3 or 4 channels here. */ | |
5807 | channels = fn_png_get_channels (png_ptr, info_ptr); | |
5808 | xassert (channels == 3 || channels == 4); | |
5809 | ||
5810 | /* Number of bytes needed for one row of the image. */ | |
5811 | row_bytes = fn_png_get_rowbytes (png_ptr, info_ptr); | |
5812 | ||
5813 | /* Allocate memory for the image. */ | |
5814 | pixels = (png_byte *) xmalloc (row_bytes * height * sizeof *pixels); | |
5815 | rows = (png_byte **) xmalloc (height * sizeof *rows); | |
5816 | for (i = 0; i < height; ++i) | |
5817 | rows[i] = pixels + i * row_bytes; | |
5818 | ||
5819 | /* Read the entire image. */ | |
5820 | fn_png_read_image (png_ptr, rows); | |
5821 | fn_png_read_end (png_ptr, info_ptr); | |
5822 | if (fp) | |
5823 | { | |
5824 | fclose (fp); | |
5825 | fp = NULL; | |
5826 | } | |
5827 | ||
5828 | /* Create the X image and pixmap. */ | |
5829 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, | |
5830 | &img->pixmap)) | |
5831 | goto error; | |
5832 | ||
5833 | /* Create an image and pixmap serving as mask if the PNG image | |
5834 | contains an alpha channel. */ | |
5835 | if (channels == 4 | |
5836 | && !transparent_p | |
5837 | && !x_create_x_image_and_pixmap (f, width, height, 1, | |
5838 | &mask_img, &img->mask)) | |
5839 | { | |
5840 | x_destroy_x_image (ximg); | |
5841 | Free_Pixmap (FRAME_X_DISPLAY (f), img->pixmap); | |
5842 | img->pixmap = NO_PIXMAP; | |
5843 | goto error; | |
5844 | } | |
5845 | ||
5846 | /* Fill the X image and mask from PNG data. */ | |
5847 | init_color_table (); | |
5848 | ||
5849 | for (y = 0; y < height; ++y) | |
5850 | { | |
5851 | png_byte *p = rows[y]; | |
5852 | ||
5853 | for (x = 0; x < width; ++x) | |
5854 | { | |
5855 | unsigned r, g, b; | |
5856 | ||
5857 | r = *p++ << 8; | |
5858 | g = *p++ << 8; | |
5859 | b = *p++ << 8; | |
5860 | XPutPixel (ximg, x, y, lookup_rgb_color (f, r, g, b)); | |
5861 | /* An alpha channel, aka mask channel, associates variable | |
5862 | transparency with an image. Where other image formats | |
5863 | support binary transparency---fully transparent or fully | |
5864 | opaque---PNG allows up to 254 levels of partial transparency. | |
5865 | The PNG library implements partial transparency by combining | |
5866 | the image with a specified background color. | |
5867 | ||
5868 | I'm not sure how to handle this here nicely: because the | |
5869 | background on which the image is displayed may change, for | |
5870 | real alpha channel support, it would be necessary to create | |
5871 | a new image for each possible background. | |
5872 | ||
5873 | What I'm doing now is that a mask is created if we have | |
5874 | boolean transparency information. Otherwise I'm using | |
5875 | the frame's background color to combine the image with. */ | |
5876 | ||
5877 | if (channels == 4) | |
5878 | { | |
5879 | if (mask_img) | |
9ecf6403 | 5880 | XPutPixel (mask_img, x, y, *p > 0 ? PIX_MASK_DRAW : PIX_MASK_RETAIN); |
4ef0d4d0 KS |
5881 | ++p; |
5882 | } | |
5883 | } | |
5884 | } | |
5885 | ||
5886 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
5887 | /* Set IMG's background color from the PNG image, unless the user | |
5888 | overrode it. */ | |
5889 | { | |
5890 | png_color_16 *bg; | |
5891 | if (fn_png_get_bKGD (png_ptr, info_ptr, &bg)) | |
5892 | { | |
5893 | img->background = lookup_rgb_color (f, bg->red, bg->green, bg->blue); | |
5894 | img->background_valid = 1; | |
5895 | } | |
5896 | } | |
5897 | ||
5898 | #ifdef COLOR_TABLE_SUPPORT | |
5899 | /* Remember colors allocated for this image. */ | |
5900 | img->colors = colors_in_color_table (&img->ncolors); | |
5901 | free_color_table (); | |
5902 | #endif /* COLOR_TABLE_SUPPORT */ | |
5903 | ||
5904 | /* Clean up. */ | |
5905 | fn_png_destroy_read_struct (&png_ptr, &info_ptr, &end_info); | |
5906 | xfree (rows); | |
5907 | xfree (pixels); | |
5908 | ||
5909 | img->width = width; | |
5910 | img->height = height; | |
5911 | ||
2e09fef1 EZ |
5912 | /* Maybe fill in the background field while we have ximg handy. |
5913 | Casting avoids a GCC warning. */ | |
5914 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
5915 | |
5916 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
5917 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
5918 | x_destroy_x_image (ximg); | |
5919 | ||
5920 | /* Same for the mask. */ | |
5921 | if (mask_img) | |
5922 | { | |
2e09fef1 EZ |
5923 | /* Fill in the background_transparent field while we have the |
5924 | mask handy. Casting avoids a GCC warning. */ | |
5925 | image_background_transparent (img, f, (XImagePtr_or_DC)mask_img); | |
4ef0d4d0 KS |
5926 | |
5927 | x_put_x_image (f, mask_img, img->mask, img->width, img->height); | |
5928 | x_destroy_x_image (mask_img); | |
5929 | } | |
5930 | ||
4ef0d4d0 KS |
5931 | return 1; |
5932 | } | |
5933 | ||
5934 | #else /* HAVE_PNG */ | |
5935 | ||
edfda783 AR |
5936 | #ifdef HAVE_NS |
5937 | static int | |
5938 | png_load (struct frame *f, struct image *img) | |
5939 | { | |
5940 | return ns_load_image(f, img, | |
5941 | image_spec_value (img->spec, QCfile, NULL), | |
5942 | image_spec_value (img->spec, QCdata, NULL)); | |
5943 | } | |
5944 | #endif /* HAVE_NS */ | |
5945 | ||
5946 | ||
4ef0d4d0 KS |
5947 | #endif /* !HAVE_PNG */ |
5948 | ||
5949 | ||
5950 | \f | |
5951 | /*********************************************************************** | |
5952 | JPEG | |
b0c396f7 | 5953 | ***********************************************************************/ |
4ef0d4d0 | 5954 | |
9e2a2647 | 5955 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
4ef0d4d0 | 5956 | |
f57e2426 J |
5957 | static int jpeg_image_p (Lisp_Object object); |
5958 | static int jpeg_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
5959 | |
5960 | /* The symbol `jpeg' identifying images of this type. */ | |
5961 | ||
5962 | Lisp_Object Qjpeg; | |
5963 | ||
5964 | /* Indices of image specification fields in gs_format, below. */ | |
5965 | ||
5966 | enum jpeg_keyword_index | |
b0c396f7 JV |
5967 | { |
5968 | JPEG_TYPE, | |
5969 | JPEG_DATA, | |
5970 | JPEG_FILE, | |
5971 | JPEG_ASCENT, | |
5972 | JPEG_MARGIN, | |
5973 | JPEG_RELIEF, | |
5974 | JPEG_ALGORITHM, | |
5975 | JPEG_HEURISTIC_MASK, | |
5976 | JPEG_MASK, | |
5977 | JPEG_BACKGROUND, | |
5978 | JPEG_LAST | |
5979 | }; | |
4ef0d4d0 KS |
5980 | |
5981 | /* Vector of image_keyword structures describing the format | |
5982 | of valid user-defined image specifications. */ | |
5983 | ||
91433552 | 5984 | static const struct image_keyword jpeg_format[JPEG_LAST] = |
b0c396f7 JV |
5985 | { |
5986 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
5987 | {":data", IMAGE_STRING_VALUE, 0}, | |
5988 | {":file", IMAGE_STRING_VALUE, 0}, | |
5989 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
5990 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
5991 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
5992 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5993 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5994 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
5995 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
5996 | }; | |
4ef0d4d0 KS |
5997 | |
5998 | /* Structure describing the image type `jpeg'. */ | |
5999 | ||
6000 | static struct image_type jpeg_type = | |
b0c396f7 JV |
6001 | { |
6002 | &Qjpeg, | |
6003 | jpeg_image_p, | |
6004 | jpeg_load, | |
6005 | x_clear_image, | |
6006 | NULL | |
6007 | }; | |
4ef0d4d0 KS |
6008 | |
6009 | /* Return non-zero if OBJECT is a valid JPEG image specification. */ | |
6010 | ||
6011 | static int | |
d3da34e0 | 6012 | jpeg_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6013 | { |
6014 | struct image_keyword fmt[JPEG_LAST]; | |
6015 | ||
72af86bd | 6016 | memcpy (fmt, jpeg_format, sizeof fmt); |
4ef0d4d0 KS |
6017 | |
6018 | if (!parse_image_spec (object, fmt, JPEG_LAST, Qjpeg)) | |
6019 | return 0; | |
6020 | ||
6021 | /* Must specify either the :data or :file keyword. */ | |
6022 | return fmt[JPEG_FILE].count + fmt[JPEG_DATA].count == 1; | |
6023 | } | |
6024 | ||
9e2a2647 | 6025 | #endif /* HAVE_JPEG || HAVE_NS */ |
4ef0d4d0 KS |
6026 | |
6027 | #ifdef HAVE_JPEG | |
6028 | ||
6029 | /* Work around a warning about HAVE_STDLIB_H being redefined in | |
6030 | jconfig.h. */ | |
6031 | #ifdef HAVE_STDLIB_H | |
4ef0d4d0 KS |
6032 | #undef HAVE_STDLIB_H |
6033 | #endif /* HAVE_STLIB_H */ | |
6034 | ||
66354420 | 6035 | #if defined (HAVE_NTGUI) && !defined (__WIN32__) |
28893db2 JB |
6036 | /* In older releases of the jpeg library, jpeglib.h will define boolean |
6037 | differently depending on __WIN32__, so make sure it is defined. */ | |
66354420 JR |
6038 | #define __WIN32__ 1 |
6039 | #endif | |
6040 | ||
4ef0d4d0 KS |
6041 | #include <jpeglib.h> |
6042 | #include <jerror.h> | |
4ef0d4d0 KS |
6043 | |
6044 | #ifdef HAVE_STLIB_H_1 | |
6045 | #define HAVE_STDLIB_H 1 | |
6046 | #endif | |
6047 | ||
6048 | #ifdef HAVE_NTGUI | |
6049 | ||
6050 | /* JPEG library details. */ | |
14beddf4 CY |
6051 | DEF_IMGLIB_FN (void, jpeg_CreateDecompress, (j_decompress_ptr, int, size_t)); |
6052 | DEF_IMGLIB_FN (boolean, jpeg_start_decompress, (j_decompress_ptr)); | |
6053 | DEF_IMGLIB_FN (boolean, jpeg_finish_decompress, (j_decompress_ptr)); | |
6054 | DEF_IMGLIB_FN (void, jpeg_destroy_decompress, (j_decompress_ptr)); | |
6055 | DEF_IMGLIB_FN (int, jpeg_read_header, (j_decompress_ptr, boolean)); | |
6056 | DEF_IMGLIB_FN (JDIMENSION, jpeg_read_scanlines, (j_decompress_ptr, JSAMPARRAY, JDIMENSION)); | |
6057 | DEF_IMGLIB_FN (struct jpeg_error_mgr *, jpeg_std_error, (struct jpeg_error_mgr *)); | |
6058 | DEF_IMGLIB_FN (boolean, jpeg_resync_to_restart, (j_decompress_ptr, int)); | |
4ef0d4d0 KS |
6059 | |
6060 | static int | |
0855eb52 | 6061 | init_jpeg_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6062 | { |
6063 | HMODULE library; | |
6064 | ||
0855eb52 | 6065 | if (!(library = w32_delayed_load (libraries, Qjpeg))) |
4ef0d4d0 KS |
6066 | return 0; |
6067 | ||
6068 | LOAD_IMGLIB_FN (library, jpeg_finish_decompress); | |
6069 | LOAD_IMGLIB_FN (library, jpeg_read_scanlines); | |
6070 | LOAD_IMGLIB_FN (library, jpeg_start_decompress); | |
6071 | LOAD_IMGLIB_FN (library, jpeg_read_header); | |
4ef0d4d0 KS |
6072 | LOAD_IMGLIB_FN (library, jpeg_CreateDecompress); |
6073 | LOAD_IMGLIB_FN (library, jpeg_destroy_decompress); | |
6074 | LOAD_IMGLIB_FN (library, jpeg_std_error); | |
6075 | LOAD_IMGLIB_FN (library, jpeg_resync_to_restart); | |
6076 | return 1; | |
6077 | } | |
6078 | ||
6079 | /* Wrapper since we can't directly assign the function pointer | |
6080 | to another function pointer that was declared more completely easily. */ | |
6081 | static boolean | |
7c3320d8 | 6082 | jpeg_resync_to_restart_wrapper (j_decompress_ptr cinfo, int desired) |
4ef0d4d0 KS |
6083 | { |
6084 | return fn_jpeg_resync_to_restart (cinfo, desired); | |
6085 | } | |
6086 | ||
6087 | #else | |
6088 | ||
6089 | #define fn_jpeg_CreateDecompress(a,b,c) jpeg_create_decompress(a) | |
6090 | #define fn_jpeg_start_decompress jpeg_start_decompress | |
6091 | #define fn_jpeg_finish_decompress jpeg_finish_decompress | |
6092 | #define fn_jpeg_destroy_decompress jpeg_destroy_decompress | |
6093 | #define fn_jpeg_read_header jpeg_read_header | |
6094 | #define fn_jpeg_read_scanlines jpeg_read_scanlines | |
4ef0d4d0 KS |
6095 | #define fn_jpeg_std_error jpeg_std_error |
6096 | #define jpeg_resync_to_restart_wrapper jpeg_resync_to_restart | |
6097 | ||
6098 | #endif /* HAVE_NTGUI */ | |
6099 | ||
6100 | struct my_jpeg_error_mgr | |
6101 | { | |
6102 | struct jpeg_error_mgr pub; | |
6103 | jmp_buf setjmp_buffer; | |
6104 | }; | |
6105 | ||
6106 | ||
6107 | static void | |
d3da34e0 | 6108 | my_error_exit (j_common_ptr cinfo) |
4ef0d4d0 KS |
6109 | { |
6110 | struct my_jpeg_error_mgr *mgr = (struct my_jpeg_error_mgr *) cinfo->err; | |
6111 | longjmp (mgr->setjmp_buffer, 1); | |
6112 | } | |
6113 | ||
6114 | ||
6115 | /* Init source method for JPEG data source manager. Called by | |
6116 | jpeg_read_header() before any data is actually read. See | |
6117 | libjpeg.doc from the JPEG lib distribution. */ | |
6118 | ||
6119 | static void | |
d3da34e0 | 6120 | our_common_init_source (j_decompress_ptr cinfo) |
b25a72ab JB |
6121 | { |
6122 | } | |
6123 | ||
6124 | ||
6125 | /* Method to terminate data source. Called by | |
6126 | jpeg_finish_decompress() after all data has been processed. */ | |
6127 | ||
6128 | static void | |
d3da34e0 | 6129 | our_common_term_source (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6130 | { |
6131 | } | |
6132 | ||
6133 | ||
6134 | /* Fill input buffer method for JPEG data source manager. Called | |
6135 | whenever more data is needed. We read the whole image in one step, | |
6136 | so this only adds a fake end of input marker at the end. */ | |
6137 | ||
5a1539f3 | 6138 | static JOCTET our_memory_buffer[2]; |
aca946f3 | 6139 | |
4ef0d4d0 | 6140 | static boolean |
d3da34e0 | 6141 | our_memory_fill_input_buffer (j_decompress_ptr cinfo) |
4ef0d4d0 KS |
6142 | { |
6143 | /* Insert a fake EOI marker. */ | |
6144 | struct jpeg_source_mgr *src = cinfo->src; | |
4ef0d4d0 | 6145 | |
5a1539f3 MB |
6146 | our_memory_buffer[0] = (JOCTET) 0xFF; |
6147 | our_memory_buffer[1] = (JOCTET) JPEG_EOI; | |
4ef0d4d0 | 6148 | |
5a1539f3 | 6149 | src->next_input_byte = our_memory_buffer; |
4ef0d4d0 | 6150 | src->bytes_in_buffer = 2; |
e0e30823 | 6151 | return 1; |
4ef0d4d0 KS |
6152 | } |
6153 | ||
6154 | ||
6155 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6156 | is the JPEG data source manager. */ | |
6157 | ||
6158 | static void | |
d3da34e0 | 6159 | our_memory_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
4ef0d4d0 KS |
6160 | { |
6161 | struct jpeg_source_mgr *src = (struct jpeg_source_mgr *) cinfo->src; | |
6162 | ||
6163 | if (src) | |
6164 | { | |
6165 | if (num_bytes > src->bytes_in_buffer) | |
6166 | ERREXIT (cinfo, JERR_INPUT_EOF); | |
6167 | ||
6168 | src->bytes_in_buffer -= num_bytes; | |
6169 | src->next_input_byte += num_bytes; | |
6170 | } | |
6171 | } | |
6172 | ||
6173 | ||
4ef0d4d0 KS |
6174 | /* Set up the JPEG lib for reading an image from DATA which contains |
6175 | LEN bytes. CINFO is the decompression info structure created for | |
6176 | reading the image. */ | |
6177 | ||
6178 | static void | |
d3da34e0 | 6179 | jpeg_memory_src (j_decompress_ptr cinfo, JOCTET *data, unsigned int len) |
4ef0d4d0 KS |
6180 | { |
6181 | struct jpeg_source_mgr *src; | |
6182 | ||
6183 | if (cinfo->src == NULL) | |
6184 | { | |
6185 | /* First time for this JPEG object? */ | |
6186 | cinfo->src = (struct jpeg_source_mgr *) | |
6187 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6188 | sizeof (struct jpeg_source_mgr)); | |
6189 | src = (struct jpeg_source_mgr *) cinfo->src; | |
6190 | src->next_input_byte = data; | |
6191 | } | |
6192 | ||
6193 | src = (struct jpeg_source_mgr *) cinfo->src; | |
b25a72ab JB |
6194 | src->init_source = our_common_init_source; |
6195 | src->fill_input_buffer = our_memory_fill_input_buffer; | |
6196 | src->skip_input_data = our_memory_skip_input_data; | |
4ef0d4d0 | 6197 | src->resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ |
b25a72ab | 6198 | src->term_source = our_common_term_source; |
4ef0d4d0 KS |
6199 | src->bytes_in_buffer = len; |
6200 | src->next_input_byte = data; | |
6201 | } | |
6202 | ||
6203 | ||
b25a72ab JB |
6204 | struct jpeg_stdio_mgr |
6205 | { | |
6206 | struct jpeg_source_mgr mgr; | |
6207 | boolean finished; | |
6208 | FILE *file; | |
6209 | JOCTET *buffer; | |
6210 | }; | |
6211 | ||
6212 | ||
6213 | /* Size of buffer to read JPEG from file. | |
6214 | Not too big, as we want to use alloc_small. */ | |
6215 | #define JPEG_STDIO_BUFFER_SIZE 8192 | |
6216 | ||
6217 | ||
6218 | /* Fill input buffer method for JPEG data source manager. Called | |
6219 | whenever more data is needed. The data is read from a FILE *. */ | |
6220 | ||
6221 | static boolean | |
d3da34e0 | 6222 | our_stdio_fill_input_buffer (j_decompress_ptr cinfo) |
b25a72ab JB |
6223 | { |
6224 | struct jpeg_stdio_mgr *src; | |
6225 | ||
6226 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6227 | if (!src->finished) | |
6228 | { | |
6229 | size_t bytes; | |
6230 | ||
6231 | bytes = fread (src->buffer, 1, JPEG_STDIO_BUFFER_SIZE, src->file); | |
6232 | if (bytes > 0) | |
6233 | src->mgr.bytes_in_buffer = bytes; | |
6234 | else | |
6235 | { | |
6236 | WARNMS (cinfo, JWRN_JPEG_EOF); | |
6237 | src->finished = 1; | |
6238 | src->buffer[0] = (JOCTET) 0xFF; | |
6239 | src->buffer[1] = (JOCTET) JPEG_EOI; | |
6240 | src->mgr.bytes_in_buffer = 2; | |
6241 | } | |
6242 | src->mgr.next_input_byte = src->buffer; | |
6243 | } | |
6244 | ||
6245 | return 1; | |
6246 | } | |
6247 | ||
6248 | ||
6249 | /* Method to skip over NUM_BYTES bytes in the image data. CINFO->src | |
6250 | is the JPEG data source manager. */ | |
6251 | ||
6252 | static void | |
d3da34e0 | 6253 | our_stdio_skip_input_data (j_decompress_ptr cinfo, long int num_bytes) |
b25a72ab JB |
6254 | { |
6255 | struct jpeg_stdio_mgr *src; | |
6256 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6257 | ||
6258 | while (num_bytes > 0 && !src->finished) | |
6259 | { | |
6260 | if (num_bytes <= src->mgr.bytes_in_buffer) | |
6261 | { | |
6262 | src->mgr.bytes_in_buffer -= num_bytes; | |
6263 | src->mgr.next_input_byte += num_bytes; | |
6264 | break; | |
6265 | } | |
6266 | else | |
6267 | { | |
6268 | num_bytes -= src->mgr.bytes_in_buffer; | |
6269 | src->mgr.bytes_in_buffer = 0; | |
6270 | src->mgr.next_input_byte = NULL; | |
6271 | ||
6272 | our_stdio_fill_input_buffer (cinfo); | |
6273 | } | |
6274 | } | |
6275 | } | |
6276 | ||
6277 | ||
6278 | /* Set up the JPEG lib for reading an image from a FILE *. | |
6279 | CINFO is the decompression info structure created for | |
6280 | reading the image. */ | |
6281 | ||
6282 | static void | |
d3da34e0 | 6283 | jpeg_file_src (j_decompress_ptr cinfo, FILE *fp) |
b25a72ab JB |
6284 | { |
6285 | struct jpeg_stdio_mgr *src; | |
6286 | ||
6287 | if (cinfo->src != NULL) | |
b0c396f7 | 6288 | src = (struct jpeg_stdio_mgr *) cinfo->src; |
b25a72ab JB |
6289 | else |
6290 | { | |
6291 | /* First time for this JPEG object? */ | |
6292 | cinfo->src = (struct jpeg_source_mgr *) | |
6293 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, | |
6294 | sizeof (struct jpeg_stdio_mgr)); | |
6295 | src = (struct jpeg_stdio_mgr *) cinfo->src; | |
6296 | src->buffer = (JOCTET *) | |
b0c396f7 JV |
6297 | (*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT, |
6298 | JPEG_STDIO_BUFFER_SIZE); | |
b25a72ab JB |
6299 | } |
6300 | ||
6301 | src->file = fp; | |
6302 | src->finished = 0; | |
6303 | src->mgr.init_source = our_common_init_source; | |
6304 | src->mgr.fill_input_buffer = our_stdio_fill_input_buffer; | |
6305 | src->mgr.skip_input_data = our_stdio_skip_input_data; | |
6306 | src->mgr.resync_to_restart = jpeg_resync_to_restart_wrapper; /* Use default method. */ | |
6307 | src->mgr.term_source = our_common_term_source; | |
6308 | src->mgr.bytes_in_buffer = 0; | |
6309 | src->mgr.next_input_byte = NULL; | |
6310 | } | |
6311 | ||
6312 | ||
4ef0d4d0 KS |
6313 | /* Load image IMG for use on frame F. Patterned after example.c |
6314 | from the JPEG lib. */ | |
6315 | ||
6316 | static int | |
d3da34e0 | 6317 | jpeg_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6318 | { |
6319 | struct jpeg_decompress_struct cinfo; | |
6320 | struct my_jpeg_error_mgr mgr; | |
6321 | Lisp_Object file, specified_file; | |
6322 | Lisp_Object specified_data; | |
6323 | FILE * volatile fp = NULL; | |
6324 | JSAMPARRAY buffer; | |
6325 | int row_stride, x, y; | |
6326 | XImagePtr ximg = NULL; | |
6327 | int rc; | |
6328 | unsigned long *colors; | |
6329 | int width, height; | |
4ef0d4d0 KS |
6330 | |
6331 | /* Open the JPEG file. */ | |
6332 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6333 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6334 | |
6335 | if (NILP (specified_data)) | |
6336 | { | |
6337 | file = x_find_image_file (specified_file); | |
6338 | if (!STRINGP (file)) | |
6339 | { | |
6340 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6341 | return 0; |
6342 | } | |
6343 | ||
42a5b22f | 6344 | fp = fopen (SSDATA (file), "rb"); |
4ef0d4d0 KS |
6345 | if (fp == NULL) |
6346 | { | |
6347 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6348 | return 0; |
6349 | } | |
6350 | } | |
7574650a AS |
6351 | else if (!STRINGP (specified_data)) |
6352 | { | |
6353 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6354 | return 0; | |
6355 | } | |
4ef0d4d0 KS |
6356 | |
6357 | /* Customize libjpeg's error handling to call my_error_exit when an | |
df61c790 AS |
6358 | error is detected. This function will perform a longjmp. */ |
6359 | cinfo.err = fn_jpeg_std_error (&mgr.pub); | |
4ef0d4d0 KS |
6360 | mgr.pub.error_exit = my_error_exit; |
6361 | ||
6362 | if ((rc = setjmp (mgr.setjmp_buffer)) != 0) | |
6363 | { | |
6364 | if (rc == 1) | |
6365 | { | |
6366 | /* Called from my_error_exit. Display a JPEG error. */ | |
6367 | char buffer[JMSG_LENGTH_MAX]; | |
6368 | cinfo.err->format_message ((j_common_ptr) &cinfo, buffer); | |
6369 | image_error ("Error reading JPEG image `%s': %s", img->spec, | |
6370 | build_string (buffer)); | |
6371 | } | |
6372 | ||
6373 | /* Close the input file and destroy the JPEG object. */ | |
6374 | if (fp) | |
6375 | fclose ((FILE *) fp); | |
6376 | fn_jpeg_destroy_decompress (&cinfo); | |
6377 | ||
6378 | /* If we already have an XImage, free that. */ | |
6379 | x_destroy_x_image (ximg); | |
6380 | ||
6381 | /* Free pixmap and colors. */ | |
6382 | x_clear_image (f, img); | |
4ef0d4d0 KS |
6383 | return 0; |
6384 | } | |
6385 | ||
6386 | /* Create the JPEG decompression object. Let it read from fp. | |
b0c396f7 | 6387 | Read the JPEG image header. */ |
4ef0d4d0 KS |
6388 | fn_jpeg_CreateDecompress (&cinfo, JPEG_LIB_VERSION, sizeof (cinfo)); |
6389 | ||
6390 | if (NILP (specified_data)) | |
b25a72ab | 6391 | jpeg_file_src (&cinfo, (FILE *) fp); |
4ef0d4d0 KS |
6392 | else |
6393 | jpeg_memory_src (&cinfo, SDATA (specified_data), | |
6394 | SBYTES (specified_data)); | |
6395 | ||
e0e30823 | 6396 | fn_jpeg_read_header (&cinfo, 1); |
4ef0d4d0 KS |
6397 | |
6398 | /* Customize decompression so that color quantization will be used. | |
b0c396f7 | 6399 | Start decompression. */ |
e0e30823 | 6400 | cinfo.quantize_colors = 1; |
4ef0d4d0 KS |
6401 | fn_jpeg_start_decompress (&cinfo); |
6402 | width = img->width = cinfo.output_width; | |
6403 | height = img->height = cinfo.output_height; | |
6404 | ||
f1f25b99 CY |
6405 | if (!check_image_size (f, width, height)) |
6406 | { | |
10ea2b82 | 6407 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
6408 | longjmp (mgr.setjmp_buffer, 2); |
6409 | } | |
6410 | ||
4ef0d4d0 KS |
6411 | /* Create X image and pixmap. */ |
6412 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6413 | longjmp (mgr.setjmp_buffer, 2); | |
6414 | ||
6415 | /* Allocate colors. When color quantization is used, | |
6416 | cinfo.actual_number_of_colors has been set with the number of | |
6417 | colors generated, and cinfo.colormap is a two-dimensional array | |
6418 | of color indices in the range 0..cinfo.actual_number_of_colors. | |
6419 | No more than 255 colors will be generated. */ | |
6420 | { | |
6421 | int i, ir, ig, ib; | |
6422 | ||
6423 | if (cinfo.out_color_components > 2) | |
6424 | ir = 0, ig = 1, ib = 2; | |
6425 | else if (cinfo.out_color_components > 1) | |
6426 | ir = 0, ig = 1, ib = 0; | |
6427 | else | |
6428 | ir = 0, ig = 0, ib = 0; | |
6429 | ||
6430 | /* Use the color table mechanism because it handles colors that | |
6431 | cannot be allocated nicely. Such colors will be replaced with | |
6432 | a default color, and we don't have to care about which colors | |
6433 | can be freed safely, and which can't. */ | |
6434 | init_color_table (); | |
6435 | colors = (unsigned long *) alloca (cinfo.actual_number_of_colors | |
6436 | * sizeof *colors); | |
6437 | ||
6438 | for (i = 0; i < cinfo.actual_number_of_colors; ++i) | |
6439 | { | |
6440 | /* Multiply RGB values with 255 because X expects RGB values | |
6441 | in the range 0..0xffff. */ | |
6442 | int r = cinfo.colormap[ir][i] << 8; | |
6443 | int g = cinfo.colormap[ig][i] << 8; | |
6444 | int b = cinfo.colormap[ib][i] << 8; | |
6445 | colors[i] = lookup_rgb_color (f, r, g, b); | |
6446 | } | |
6447 | ||
6448 | #ifdef COLOR_TABLE_SUPPORT | |
6449 | /* Remember those colors actually allocated. */ | |
6450 | img->colors = colors_in_color_table (&img->ncolors); | |
6451 | free_color_table (); | |
6452 | #endif /* COLOR_TABLE_SUPPORT */ | |
6453 | } | |
6454 | ||
6455 | /* Read pixels. */ | |
6456 | row_stride = width * cinfo.output_components; | |
6457 | buffer = cinfo.mem->alloc_sarray ((j_common_ptr) &cinfo, JPOOL_IMAGE, | |
6458 | row_stride, 1); | |
6459 | for (y = 0; y < height; ++y) | |
6460 | { | |
6461 | fn_jpeg_read_scanlines (&cinfo, buffer, 1); | |
6462 | for (x = 0; x < cinfo.output_width; ++x) | |
6463 | XPutPixel (ximg, x, y, colors[buffer[0][x]]); | |
6464 | } | |
6465 | ||
6466 | /* Clean up. */ | |
6467 | fn_jpeg_finish_decompress (&cinfo); | |
6468 | fn_jpeg_destroy_decompress (&cinfo); | |
6469 | if (fp) | |
6470 | fclose ((FILE *) fp); | |
6471 | ||
6472 | /* Maybe fill in the background field while we have ximg handy. */ | |
6473 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6474 | /* Casting avoids a GCC warning. */ |
6475 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6476 | |
6477 | /* Put the image into the pixmap. */ | |
6478 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6479 | x_destroy_x_image (ximg); | |
4ef0d4d0 KS |
6480 | return 1; |
6481 | } | |
6482 | ||
6483 | #else /* HAVE_JPEG */ | |
6484 | ||
edfda783 AR |
6485 | #ifdef HAVE_NS |
6486 | static int | |
6487 | jpeg_load (struct frame *f, struct image *img) | |
6488 | { | |
ed3751c8 JB |
6489 | return ns_load_image (f, img, |
6490 | image_spec_value (img->spec, QCfile, NULL), | |
6491 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6492 | } |
6493 | #endif /* HAVE_NS */ | |
6494 | ||
4ef0d4d0 KS |
6495 | #endif /* !HAVE_JPEG */ |
6496 | ||
6497 | ||
6498 | \f | |
6499 | /*********************************************************************** | |
6500 | TIFF | |
b0c396f7 | 6501 | ***********************************************************************/ |
4ef0d4d0 | 6502 | |
9e2a2647 | 6503 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
4ef0d4d0 | 6504 | |
f57e2426 J |
6505 | static int tiff_image_p (Lisp_Object object); |
6506 | static int tiff_load (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6507 | |
6508 | /* The symbol `tiff' identifying images of this type. */ | |
6509 | ||
6510 | Lisp_Object Qtiff; | |
6511 | ||
6512 | /* Indices of image specification fields in tiff_format, below. */ | |
6513 | ||
6514 | enum tiff_keyword_index | |
b0c396f7 JV |
6515 | { |
6516 | TIFF_TYPE, | |
6517 | TIFF_DATA, | |
6518 | TIFF_FILE, | |
6519 | TIFF_ASCENT, | |
6520 | TIFF_MARGIN, | |
6521 | TIFF_RELIEF, | |
6522 | TIFF_ALGORITHM, | |
6523 | TIFF_HEURISTIC_MASK, | |
6524 | TIFF_MASK, | |
6525 | TIFF_BACKGROUND, | |
6526 | TIFF_INDEX, | |
6527 | TIFF_LAST | |
6528 | }; | |
4ef0d4d0 KS |
6529 | |
6530 | /* Vector of image_keyword structures describing the format | |
6531 | of valid user-defined image specifications. */ | |
6532 | ||
91433552 | 6533 | static const struct image_keyword tiff_format[TIFF_LAST] = |
b0c396f7 JV |
6534 | { |
6535 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6536 | {":data", IMAGE_STRING_VALUE, 0}, | |
6537 | {":file", IMAGE_STRING_VALUE, 0}, | |
6538 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6539 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6540 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6541 | {":conversions", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6542 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6543 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6544 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, | |
6545 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0} | |
6546 | }; | |
4ef0d4d0 KS |
6547 | |
6548 | /* Structure describing the image type `tiff'. */ | |
6549 | ||
6550 | static struct image_type tiff_type = | |
b0c396f7 JV |
6551 | { |
6552 | &Qtiff, | |
6553 | tiff_image_p, | |
6554 | tiff_load, | |
6555 | x_clear_image, | |
6556 | NULL | |
6557 | }; | |
4ef0d4d0 KS |
6558 | |
6559 | /* Return non-zero if OBJECT is a valid TIFF image specification. */ | |
6560 | ||
6561 | static int | |
d3da34e0 | 6562 | tiff_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6563 | { |
6564 | struct image_keyword fmt[TIFF_LAST]; | |
72af86bd | 6565 | memcpy (fmt, tiff_format, sizeof fmt); |
4ef0d4d0 KS |
6566 | |
6567 | if (!parse_image_spec (object, fmt, TIFF_LAST, Qtiff)) | |
6568 | return 0; | |
6569 | ||
6570 | /* Must specify either the :data or :file keyword. */ | |
6571 | return fmt[TIFF_FILE].count + fmt[TIFF_DATA].count == 1; | |
6572 | } | |
6573 | ||
9e2a2647 | 6574 | #endif /* HAVE_TIFF || HAVE_NS */ |
4ef0d4d0 KS |
6575 | |
6576 | #ifdef HAVE_TIFF | |
6577 | ||
6578 | #include <tiffio.h> | |
6579 | ||
6580 | #ifdef HAVE_NTGUI | |
6581 | ||
6582 | /* TIFF library details. */ | |
14beddf4 CY |
6583 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetErrorHandler, (TIFFErrorHandler)); |
6584 | DEF_IMGLIB_FN (TIFFErrorHandler, TIFFSetWarningHandler, (TIFFErrorHandler)); | |
6585 | DEF_IMGLIB_FN (TIFF *, TIFFOpen, (const char *, const char *)); | |
6586 | DEF_IMGLIB_FN (TIFF *, TIFFClientOpen, (const char *, const char *, thandle_t, | |
850690cc JB |
6587 | TIFFReadWriteProc, TIFFReadWriteProc, |
6588 | TIFFSeekProc, TIFFCloseProc, TIFFSizeProc, | |
6589 | TIFFMapFileProc, TIFFUnmapFileProc)); | |
14beddf4 CY |
6590 | DEF_IMGLIB_FN (int, TIFFGetField, (TIFF *, ttag_t, ...)); |
6591 | DEF_IMGLIB_FN (int, TIFFReadRGBAImage, (TIFF *, uint32, uint32, uint32 *, int)); | |
6592 | DEF_IMGLIB_FN (void, TIFFClose, (TIFF *)); | |
6593 | DEF_IMGLIB_FN (int, TIFFSetDirectory, (TIFF *, tdir_t)); | |
4ef0d4d0 KS |
6594 | |
6595 | static int | |
0855eb52 | 6596 | init_tiff_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
6597 | { |
6598 | HMODULE library; | |
6599 | ||
0855eb52 | 6600 | if (!(library = w32_delayed_load (libraries, Qtiff))) |
4ef0d4d0 KS |
6601 | return 0; |
6602 | ||
6603 | LOAD_IMGLIB_FN (library, TIFFSetErrorHandler); | |
6604 | LOAD_IMGLIB_FN (library, TIFFSetWarningHandler); | |
6605 | LOAD_IMGLIB_FN (library, TIFFOpen); | |
6606 | LOAD_IMGLIB_FN (library, TIFFClientOpen); | |
6607 | LOAD_IMGLIB_FN (library, TIFFGetField); | |
6608 | LOAD_IMGLIB_FN (library, TIFFReadRGBAImage); | |
6609 | LOAD_IMGLIB_FN (library, TIFFClose); | |
58279503 | 6610 | LOAD_IMGLIB_FN (library, TIFFSetDirectory); |
4ef0d4d0 KS |
6611 | return 1; |
6612 | } | |
6613 | ||
6614 | #else | |
6615 | ||
6616 | #define fn_TIFFSetErrorHandler TIFFSetErrorHandler | |
6617 | #define fn_TIFFSetWarningHandler TIFFSetWarningHandler | |
6618 | #define fn_TIFFOpen TIFFOpen | |
6619 | #define fn_TIFFClientOpen TIFFClientOpen | |
6620 | #define fn_TIFFGetField TIFFGetField | |
6621 | #define fn_TIFFReadRGBAImage TIFFReadRGBAImage | |
6622 | #define fn_TIFFClose TIFFClose | |
58279503 | 6623 | #define fn_TIFFSetDirectory TIFFSetDirectory |
4ef0d4d0 KS |
6624 | #endif /* HAVE_NTGUI */ |
6625 | ||
6626 | ||
6627 | /* Reading from a memory buffer for TIFF images Based on the PNG | |
6628 | memory source, but we have to provide a lot of extra functions. | |
6629 | Blah. | |
6630 | ||
6631 | We really only need to implement read and seek, but I am not | |
6632 | convinced that the TIFF library is smart enough not to destroy | |
6633 | itself if we only hand it the function pointers we need to | |
6634 | override. */ | |
6635 | ||
6636 | typedef struct | |
6637 | { | |
6638 | unsigned char *bytes; | |
6639 | size_t len; | |
6640 | int index; | |
6641 | } | |
b0c396f7 | 6642 | tiff_memory_source; |
4ef0d4d0 KS |
6643 | |
6644 | static size_t | |
d3da34e0 | 6645 | tiff_read_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6646 | { |
6647 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6648 | ||
6649 | if (size > src->len - src->index) | |
6650 | return (size_t) -1; | |
72af86bd | 6651 | memcpy (buf, src->bytes + src->index, size); |
4ef0d4d0 KS |
6652 | src->index += size; |
6653 | return size; | |
6654 | } | |
6655 | ||
6656 | static size_t | |
d3da34e0 | 6657 | tiff_write_from_memory (thandle_t data, tdata_t buf, tsize_t size) |
4ef0d4d0 KS |
6658 | { |
6659 | return (size_t) -1; | |
6660 | } | |
6661 | ||
6662 | static toff_t | |
d3da34e0 | 6663 | tiff_seek_in_memory (thandle_t data, toff_t off, int whence) |
4ef0d4d0 KS |
6664 | { |
6665 | tiff_memory_source *src = (tiff_memory_source *) data; | |
6666 | int idx; | |
6667 | ||
6668 | switch (whence) | |
6669 | { | |
6670 | case SEEK_SET: /* Go from beginning of source. */ | |
6671 | idx = off; | |
6672 | break; | |
6673 | ||
6674 | case SEEK_END: /* Go from end of source. */ | |
6675 | idx = src->len + off; | |
6676 | break; | |
6677 | ||
6678 | case SEEK_CUR: /* Go from current position. */ | |
6679 | idx = src->index + off; | |
6680 | break; | |
6681 | ||
6682 | default: /* Invalid `whence'. */ | |
6683 | return -1; | |
6684 | } | |
6685 | ||
6686 | if (idx > src->len || idx < 0) | |
6687 | return -1; | |
6688 | ||
6689 | src->index = idx; | |
6690 | return src->index; | |
6691 | } | |
6692 | ||
6693 | static int | |
d3da34e0 | 6694 | tiff_close_memory (thandle_t data) |
4ef0d4d0 KS |
6695 | { |
6696 | /* NOOP */ | |
6697 | return 0; | |
6698 | } | |
6699 | ||
6700 | static int | |
d3da34e0 | 6701 | tiff_mmap_memory (thandle_t data, tdata_t *pbase, toff_t *psize) |
4ef0d4d0 KS |
6702 | { |
6703 | /* It is already _IN_ memory. */ | |
6704 | return 0; | |
6705 | } | |
6706 | ||
6707 | static void | |
d3da34e0 | 6708 | tiff_unmap_memory (thandle_t data, tdata_t base, toff_t size) |
4ef0d4d0 KS |
6709 | { |
6710 | /* We don't need to do this. */ | |
6711 | } | |
6712 | ||
6713 | static toff_t | |
d3da34e0 | 6714 | tiff_size_of_memory (thandle_t data) |
4ef0d4d0 KS |
6715 | { |
6716 | return ((tiff_memory_source *) data)->len; | |
6717 | } | |
6718 | ||
6719 | ||
6720 | static void | |
d3da34e0 | 6721 | tiff_error_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 KS |
6722 | { |
6723 | char buf[512]; | |
6724 | int len; | |
6725 | ||
6726 | len = sprintf (buf, "TIFF error: %s ", title); | |
6727 | vsprintf (buf + len, format, ap); | |
6728 | add_to_log (buf, Qnil, Qnil); | |
6729 | } | |
6730 | ||
6731 | ||
6732 | static void | |
d3da34e0 | 6733 | tiff_warning_handler (const char *title, const char *format, va_list ap) |
4ef0d4d0 KS |
6734 | { |
6735 | char buf[512]; | |
6736 | int len; | |
6737 | ||
6738 | len = sprintf (buf, "TIFF warning: %s ", title); | |
6739 | vsprintf (buf + len, format, ap); | |
6740 | add_to_log (buf, Qnil, Qnil); | |
6741 | } | |
6742 | ||
6743 | ||
6744 | /* Load TIFF image IMG for use on frame F. Value is non-zero if | |
6745 | successful. */ | |
6746 | ||
6747 | static int | |
d3da34e0 | 6748 | tiff_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
6749 | { |
6750 | Lisp_Object file, specified_file; | |
6751 | Lisp_Object specified_data; | |
6752 | TIFF *tiff; | |
58279503 | 6753 | int width, height, x, y, count; |
4ef0d4d0 | 6754 | uint32 *buf; |
58279503 | 6755 | int rc, rc2; |
4ef0d4d0 | 6756 | XImagePtr ximg; |
4ef0d4d0 | 6757 | tiff_memory_source memsrc; |
58279503 | 6758 | Lisp_Object image; |
4ef0d4d0 KS |
6759 | |
6760 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
6761 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
6762 | |
6763 | fn_TIFFSetErrorHandler (tiff_error_handler); | |
6764 | fn_TIFFSetWarningHandler (tiff_warning_handler); | |
6765 | ||
6766 | if (NILP (specified_data)) | |
6767 | { | |
6768 | /* Read from a file */ | |
6769 | file = x_find_image_file (specified_file); | |
6770 | if (!STRINGP (file)) | |
6771 | { | |
6772 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
6773 | return 0; |
6774 | } | |
6775 | ||
df61c790 | 6776 | /* Try to open the image file. */ |
b19beacc | 6777 | tiff = fn_TIFFOpen (SSDATA (file), "r"); |
4ef0d4d0 KS |
6778 | if (tiff == NULL) |
6779 | { | |
6780 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
6781 | return 0; |
6782 | } | |
6783 | } | |
6784 | else | |
6785 | { | |
7574650a AS |
6786 | if (!STRINGP (specified_data)) |
6787 | { | |
6788 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
6789 | return 0; | |
6790 | } | |
6791 | ||
4ef0d4d0 KS |
6792 | /* Memory source! */ |
6793 | memsrc.bytes = SDATA (specified_data); | |
6794 | memsrc.len = SBYTES (specified_data); | |
6795 | memsrc.index = 0; | |
6796 | ||
3082f617 | 6797 | tiff = fn_TIFFClientOpen ("memory_source", "r", (thandle_t)&memsrc, |
df61c790 AS |
6798 | (TIFFReadWriteProc) tiff_read_from_memory, |
6799 | (TIFFReadWriteProc) tiff_write_from_memory, | |
6800 | tiff_seek_in_memory, | |
6801 | tiff_close_memory, | |
6802 | tiff_size_of_memory, | |
6803 | tiff_mmap_memory, | |
6804 | tiff_unmap_memory); | |
4ef0d4d0 KS |
6805 | |
6806 | if (!tiff) | |
6807 | { | |
6808 | image_error ("Cannot open memory source for `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
6809 | return 0; |
6810 | } | |
6811 | } | |
6812 | ||
58279503 JR |
6813 | image = image_spec_value (img->spec, QCindex, NULL); |
6814 | if (INTEGERP (image)) | |
6815 | { | |
6816 | int ino = XFASTINT (image); | |
6817 | if (!fn_TIFFSetDirectory (tiff, ino)) | |
6818 | { | |
6819 | image_error ("Invalid image number `%s' in image `%s'", | |
6820 | image, img->spec); | |
6821 | fn_TIFFClose (tiff); | |
58279503 JR |
6822 | return 0; |
6823 | } | |
6824 | } | |
6825 | ||
4ef0d4d0 KS |
6826 | /* Get width and height of the image, and allocate a raster buffer |
6827 | of width x height 32-bit values. */ | |
6828 | fn_TIFFGetField (tiff, TIFFTAG_IMAGEWIDTH, &width); | |
6829 | fn_TIFFGetField (tiff, TIFFTAG_IMAGELENGTH, &height); | |
f1f25b99 CY |
6830 | |
6831 | if (!check_image_size (f, width, height)) | |
6832 | { | |
10ea2b82 | 6833 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
58279503 | 6834 | fn_TIFFClose (tiff); |
f1f25b99 CY |
6835 | return 0; |
6836 | } | |
6837 | ||
4ef0d4d0 KS |
6838 | buf = (uint32 *) xmalloc (width * height * sizeof *buf); |
6839 | ||
6840 | rc = fn_TIFFReadRGBAImage (tiff, width, height, buf, 0); | |
58279503 JR |
6841 | |
6842 | /* Count the number of images in the file. */ | |
6843 | for (count = 1, rc2 = 1; rc2; count++) | |
6844 | rc2 = fn_TIFFSetDirectory (tiff, count); | |
6845 | ||
6846 | if (count > 1) | |
6847 | img->data.lisp_val = Fcons (Qcount, | |
6848 | Fcons (make_number (count), | |
6849 | img->data.lisp_val)); | |
6850 | ||
4ef0d4d0 KS |
6851 | fn_TIFFClose (tiff); |
6852 | if (!rc) | |
6853 | { | |
6854 | image_error ("Error reading TIFF image `%s'", img->spec, Qnil); | |
6855 | xfree (buf); | |
4ef0d4d0 KS |
6856 | return 0; |
6857 | } | |
6858 | ||
6859 | /* Create the X image and pixmap. */ | |
6860 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
6861 | { | |
6862 | xfree (buf); | |
4ef0d4d0 KS |
6863 | return 0; |
6864 | } | |
6865 | ||
6866 | /* Initialize the color table. */ | |
6867 | init_color_table (); | |
6868 | ||
6869 | /* Process the pixel raster. Origin is in the lower-left corner. */ | |
6870 | for (y = 0; y < height; ++y) | |
6871 | { | |
6872 | uint32 *row = buf + y * width; | |
6873 | ||
6874 | for (x = 0; x < width; ++x) | |
6875 | { | |
6876 | uint32 abgr = row[x]; | |
6877 | int r = TIFFGetR (abgr) << 8; | |
6878 | int g = TIFFGetG (abgr) << 8; | |
6879 | int b = TIFFGetB (abgr) << 8; | |
6880 | XPutPixel (ximg, x, height - 1 - y, lookup_rgb_color (f, r, g, b)); | |
6881 | } | |
6882 | } | |
6883 | ||
6884 | #ifdef COLOR_TABLE_SUPPORT | |
6885 | /* Remember the colors allocated for the image. Free the color table. */ | |
6886 | img->colors = colors_in_color_table (&img->ncolors); | |
6887 | free_color_table (); | |
6888 | #endif /* COLOR_TABLE_SUPPORT */ | |
6889 | ||
6890 | img->width = width; | |
6891 | img->height = height; | |
6892 | ||
6893 | /* Maybe fill in the background field while we have ximg handy. */ | |
6894 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
6895 | /* Casting avoids a GCC warning on W32. */ |
6896 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
6897 | |
6898 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
6899 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
6900 | x_destroy_x_image (ximg); | |
6901 | xfree (buf); | |
6902 | ||
4ef0d4d0 KS |
6903 | return 1; |
6904 | } | |
6905 | ||
6906 | #else /* HAVE_TIFF */ | |
6907 | ||
edfda783 AR |
6908 | #ifdef HAVE_NS |
6909 | static int | |
6910 | tiff_load (struct frame *f, struct image *img) | |
6911 | { | |
ed3751c8 JB |
6912 | return ns_load_image (f, img, |
6913 | image_spec_value (img->spec, QCfile, NULL), | |
6914 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
6915 | } |
6916 | #endif /* HAVE_NS */ | |
6917 | ||
4ef0d4d0 KS |
6918 | #endif /* !HAVE_TIFF */ |
6919 | ||
6920 | ||
6921 | \f | |
6922 | /*********************************************************************** | |
6923 | GIF | |
b0c396f7 | 6924 | ***********************************************************************/ |
4ef0d4d0 | 6925 | |
9e2a2647 | 6926 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
4ef0d4d0 | 6927 | |
f57e2426 J |
6928 | static int gif_image_p (Lisp_Object object); |
6929 | static int gif_load (struct frame *f, struct image *img); | |
6930 | static void gif_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
6931 | |
6932 | /* The symbol `gif' identifying images of this type. */ | |
6933 | ||
6934 | Lisp_Object Qgif; | |
6935 | ||
6936 | /* Indices of image specification fields in gif_format, below. */ | |
6937 | ||
6938 | enum gif_keyword_index | |
b0c396f7 JV |
6939 | { |
6940 | GIF_TYPE, | |
6941 | GIF_DATA, | |
6942 | GIF_FILE, | |
6943 | GIF_ASCENT, | |
6944 | GIF_MARGIN, | |
6945 | GIF_RELIEF, | |
6946 | GIF_ALGORITHM, | |
6947 | GIF_HEURISTIC_MASK, | |
6948 | GIF_MASK, | |
6949 | GIF_IMAGE, | |
6950 | GIF_BACKGROUND, | |
6951 | GIF_LAST | |
6952 | }; | |
4ef0d4d0 KS |
6953 | |
6954 | /* Vector of image_keyword structures describing the format | |
6955 | of valid user-defined image specifications. */ | |
6956 | ||
91433552 | 6957 | static const struct image_keyword gif_format[GIF_LAST] = |
b0c396f7 JV |
6958 | { |
6959 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
6960 | {":data", IMAGE_STRING_VALUE, 0}, | |
6961 | {":file", IMAGE_STRING_VALUE, 0}, | |
6962 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
6963 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
6964 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
6965 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6966 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6967 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
6968 | {":index", IMAGE_NON_NEGATIVE_INTEGER_VALUE, 0}, | |
6969 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
6970 | }; | |
4ef0d4d0 KS |
6971 | |
6972 | /* Structure describing the image type `gif'. */ | |
6973 | ||
6974 | static struct image_type gif_type = | |
b0c396f7 JV |
6975 | { |
6976 | &Qgif, | |
6977 | gif_image_p, | |
6978 | gif_load, | |
6979 | gif_clear_image, | |
6980 | NULL | |
6981 | }; | |
4ef0d4d0 | 6982 | |
6ac3c7bb KS |
6983 | /* Free X resources of GIF image IMG which is used on frame F. */ |
6984 | ||
6985 | static void | |
d3da34e0 | 6986 | gif_clear_image (struct frame *f, struct image *img) |
6ac3c7bb | 6987 | { |
1546c559 | 6988 | /* IMG->data.ptr_val may contain metadata with extension data. */ |
6ac3c7bb KS |
6989 | img->data.lisp_val = Qnil; |
6990 | x_clear_image (f, img); | |
6991 | } | |
6992 | ||
4ef0d4d0 KS |
6993 | /* Return non-zero if OBJECT is a valid GIF image specification. */ |
6994 | ||
6995 | static int | |
d3da34e0 | 6996 | gif_image_p (Lisp_Object object) |
4ef0d4d0 KS |
6997 | { |
6998 | struct image_keyword fmt[GIF_LAST]; | |
72af86bd | 6999 | memcpy (fmt, gif_format, sizeof fmt); |
4ef0d4d0 KS |
7000 | |
7001 | if (!parse_image_spec (object, fmt, GIF_LAST, Qgif)) | |
7002 | return 0; | |
7003 | ||
7004 | /* Must specify either the :data or :file keyword. */ | |
7005 | return fmt[GIF_FILE].count + fmt[GIF_DATA].count == 1; | |
7006 | } | |
7007 | ||
9e2a2647 | 7008 | #endif /* HAVE_GIF */ |
4ef0d4d0 KS |
7009 | |
7010 | #ifdef HAVE_GIF | |
7011 | ||
9e2a2647 | 7012 | #if defined (HAVE_NTGUI) |
2e09fef1 EZ |
7013 | /* winuser.h might define DrawText to DrawTextA or DrawTextW. |
7014 | Undefine before redefining to avoid a preprocessor warning. */ | |
7015 | #ifdef DrawText | |
7016 | #undef DrawText | |
7017 | #endif | |
4ef0d4d0 KS |
7018 | /* avoid conflict with QuickdrawText.h */ |
7019 | #define DrawText gif_DrawText | |
7020 | #include <gif_lib.h> | |
7021 | #undef DrawText | |
7022 | ||
9e2a2647 | 7023 | #else /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7024 | |
7025 | #include <gif_lib.h> | |
7026 | ||
9e2a2647 | 7027 | #endif /* HAVE_NTGUI */ |
4ef0d4d0 KS |
7028 | |
7029 | ||
7030 | #ifdef HAVE_NTGUI | |
7031 | ||
7032 | /* GIF library details. */ | |
14beddf4 CY |
7033 | DEF_IMGLIB_FN (int, DGifCloseFile, (GifFileType *)); |
7034 | DEF_IMGLIB_FN (int, DGifSlurp, (GifFileType *)); | |
7035 | DEF_IMGLIB_FN (GifFileType *, DGifOpen, (void *, InputFunc)); | |
7036 | DEF_IMGLIB_FN (GifFileType *, DGifOpenFileName, (const char *)); | |
4ef0d4d0 KS |
7037 | |
7038 | static int | |
0855eb52 | 7039 | init_gif_functions (Lisp_Object libraries) |
4ef0d4d0 KS |
7040 | { |
7041 | HMODULE library; | |
7042 | ||
0855eb52 | 7043 | if (!(library = w32_delayed_load (libraries, Qgif))) |
4ef0d4d0 KS |
7044 | return 0; |
7045 | ||
7046 | LOAD_IMGLIB_FN (library, DGifCloseFile); | |
7047 | LOAD_IMGLIB_FN (library, DGifSlurp); | |
7048 | LOAD_IMGLIB_FN (library, DGifOpen); | |
7049 | LOAD_IMGLIB_FN (library, DGifOpenFileName); | |
7050 | return 1; | |
7051 | } | |
7052 | ||
7053 | #else | |
7054 | ||
7055 | #define fn_DGifCloseFile DGifCloseFile | |
7056 | #define fn_DGifSlurp DGifSlurp | |
7057 | #define fn_DGifOpen DGifOpen | |
7058 | #define fn_DGifOpenFileName DGifOpenFileName | |
7059 | ||
7060 | #endif /* HAVE_NTGUI */ | |
7061 | ||
7062 | /* Reading a GIF image from memory | |
7063 | Based on the PNG memory stuff to a certain extent. */ | |
7064 | ||
7065 | typedef struct | |
7066 | { | |
7067 | unsigned char *bytes; | |
7068 | size_t len; | |
7069 | int index; | |
7070 | } | |
b0c396f7 | 7071 | gif_memory_source; |
4ef0d4d0 KS |
7072 | |
7073 | /* Make the current memory source available to gif_read_from_memory. | |
7074 | It's done this way because not all versions of libungif support | |
7075 | a UserData field in the GifFileType structure. */ | |
7076 | static gif_memory_source *current_gif_memory_src; | |
7077 | ||
7078 | static int | |
d3da34e0 | 7079 | gif_read_from_memory (GifFileType *file, GifByteType *buf, int len) |
4ef0d4d0 KS |
7080 | { |
7081 | gif_memory_source *src = current_gif_memory_src; | |
7082 | ||
7083 | if (len > src->len - src->index) | |
7084 | return -1; | |
7085 | ||
72af86bd | 7086 | memcpy (buf, src->bytes + src->index, len); |
4ef0d4d0 KS |
7087 | src->index += len; |
7088 | return len; | |
7089 | } | |
7090 | ||
7091 | ||
7092 | /* Load GIF image IMG for use on frame F. Value is non-zero if | |
7093 | successful. */ | |
7094 | ||
91433552 DN |
7095 | static const int interlace_start[] = {0, 4, 2, 1}; |
7096 | static const int interlace_increment[] = {8, 8, 4, 2}; | |
aca946f3 | 7097 | |
17c0c952 JD |
7098 | #define GIF_LOCAL_DESCRIPTOR_EXTENSION 249 |
7099 | ||
4ef0d4d0 | 7100 | static int |
d3da34e0 | 7101 | gif_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
7102 | { |
7103 | Lisp_Object file, specified_file; | |
7104 | Lisp_Object specified_data; | |
7105 | int rc, width, height, x, y, i; | |
17c0c952 | 7106 | boolean transparent_p; |
4ef0d4d0 KS |
7107 | XImagePtr ximg; |
7108 | ColorMapObject *gif_color_map; | |
7109 | unsigned long pixel_colors[256]; | |
7110 | GifFileType *gif; | |
4ef0d4d0 | 7111 | Lisp_Object image; |
6ac3c7bb | 7112 | int ino, image_height, image_width; |
4ef0d4d0 KS |
7113 | gif_memory_source memsrc; |
7114 | unsigned char *raster; | |
17c0c952 | 7115 | unsigned int transparency_color_index; |
4ef0d4d0 KS |
7116 | |
7117 | specified_file = image_spec_value (img->spec, QCfile, NULL); | |
7118 | specified_data = image_spec_value (img->spec, QCdata, NULL); | |
4ef0d4d0 KS |
7119 | |
7120 | if (NILP (specified_data)) | |
7121 | { | |
7122 | file = x_find_image_file (specified_file); | |
7123 | if (!STRINGP (file)) | |
7124 | { | |
7125 | image_error ("Cannot find image file `%s'", specified_file, Qnil); | |
4ef0d4d0 KS |
7126 | return 0; |
7127 | } | |
7128 | ||
df61c790 AS |
7129 | /* Open the GIF file. */ |
7130 | gif = fn_DGifOpenFileName (SDATA (file)); | |
4ef0d4d0 KS |
7131 | if (gif == NULL) |
7132 | { | |
7133 | image_error ("Cannot open `%s'", file, Qnil); | |
4ef0d4d0 KS |
7134 | return 0; |
7135 | } | |
7136 | } | |
7137 | else | |
7138 | { | |
7574650a AS |
7139 | if (!STRINGP (specified_data)) |
7140 | { | |
7141 | image_error ("Invalid image data `%s'", specified_data, Qnil); | |
7142 | return 0; | |
7143 | } | |
7144 | ||
4ef0d4d0 KS |
7145 | /* Read from memory! */ |
7146 | current_gif_memory_src = &memsrc; | |
7147 | memsrc.bytes = SDATA (specified_data); | |
7148 | memsrc.len = SBYTES (specified_data); | |
7149 | memsrc.index = 0; | |
7150 | ||
df61c790 | 7151 | gif = fn_DGifOpen (&memsrc, gif_read_from_memory); |
4ef0d4d0 KS |
7152 | if (!gif) |
7153 | { | |
7154 | image_error ("Cannot open memory source `%s'", img->spec, Qnil); | |
4ef0d4d0 KS |
7155 | return 0; |
7156 | } | |
7157 | } | |
7158 | ||
f1f25b99 CY |
7159 | /* Before reading entire contents, check the declared image size. */ |
7160 | if (!check_image_size (f, gif->SWidth, gif->SHeight)) | |
7161 | { | |
10ea2b82 | 7162 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7163 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7164 | return 0; |
7165 | } | |
7166 | ||
4ef0d4d0 KS |
7167 | /* Read entire contents. */ |
7168 | rc = fn_DGifSlurp (gif); | |
7169 | if (rc == GIF_ERROR) | |
7170 | { | |
7171 | image_error ("Error reading `%s'", img->spec, Qnil); | |
7172 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7173 | return 0; |
7174 | } | |
7175 | ||
7176 | image = image_spec_value (img->spec, QCindex, NULL); | |
7177 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7178 | if (ino >= gif->ImageCount) | |
7179 | { | |
7180 | image_error ("Invalid image number `%s' in image `%s'", | |
7181 | image, img->spec); | |
7182 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7183 | return 0; |
7184 | } | |
7185 | ||
17c0c952 JD |
7186 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++) |
7187 | if ((gif->SavedImages[ino].ExtensionBlocks[i].Function | |
7188 | == GIF_LOCAL_DESCRIPTOR_EXTENSION) | |
7189 | && gif->SavedImages[ino].ExtensionBlocks[i].ByteCount == 4 | |
7190 | /* Transparency enabled? */ | |
7191 | && gif->SavedImages[ino].ExtensionBlocks[i].Bytes[0] & 1) | |
7192 | { | |
7193 | transparent_p = 1; | |
7194 | transparency_color_index | |
7195 | = (unsigned char) gif->SavedImages[ino].ExtensionBlocks[i].Bytes[3]; | |
7196 | } | |
7197 | ||
6ac3c7bb KS |
7198 | img->corners[TOP_CORNER] = gif->SavedImages[ino].ImageDesc.Top; |
7199 | img->corners[LEFT_CORNER] = gif->SavedImages[ino].ImageDesc.Left; | |
0f4aca46 | 7200 | image_height = gif->SavedImages[ino].ImageDesc.Height; |
6ac3c7bb KS |
7201 | img->corners[BOT_CORNER] = img->corners[TOP_CORNER] + image_height; |
7202 | image_width = gif->SavedImages[ino].ImageDesc.Width; | |
7203 | img->corners[RIGHT_CORNER] = img->corners[LEFT_CORNER] + image_width; | |
0f4aca46 KS |
7204 | |
7205 | width = img->width = max (gif->SWidth, | |
7206 | max (gif->Image.Left + gif->Image.Width, | |
6ac3c7bb | 7207 | img->corners[RIGHT_CORNER])); |
0f4aca46 KS |
7208 | height = img->height = max (gif->SHeight, |
7209 | max (gif->Image.Top + gif->Image.Height, | |
6ac3c7bb | 7210 | img->corners[BOT_CORNER])); |
4ef0d4d0 | 7211 | |
f1f25b99 CY |
7212 | if (!check_image_size (f, width, height)) |
7213 | { | |
10ea2b82 | 7214 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 | 7215 | fn_DGifCloseFile (gif); |
f1f25b99 CY |
7216 | return 0; |
7217 | } | |
7218 | ||
4ef0d4d0 KS |
7219 | /* Create the X image and pixmap. */ |
7220 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) | |
7221 | { | |
7222 | fn_DGifCloseFile (gif); | |
4ef0d4d0 KS |
7223 | return 0; |
7224 | } | |
7225 | ||
7226 | /* Allocate colors. */ | |
7227 | gif_color_map = gif->SavedImages[ino].ImageDesc.ColorMap; | |
7228 | if (!gif_color_map) | |
7229 | gif_color_map = gif->SColorMap; | |
7230 | init_color_table (); | |
72af86bd | 7231 | memset (pixel_colors, 0, sizeof pixel_colors); |
4ef0d4d0 | 7232 | |
1ab2cd43 TTN |
7233 | if (gif_color_map) |
7234 | for (i = 0; i < gif_color_map->ColorCount; ++i) | |
7235 | { | |
17c0c952 JD |
7236 | if (transparent_p && transparency_color_index == i) |
7237 | { | |
7238 | Lisp_Object specified_bg | |
7239 | = image_spec_value (img->spec, QCbackground, NULL); | |
7240 | pixel_colors[i] = STRINGP (specified_bg) | |
7241 | ? x_alloc_image_color (f, img, specified_bg, | |
7242 | FRAME_BACKGROUND_PIXEL (f)) | |
7243 | : FRAME_BACKGROUND_PIXEL (f); | |
7244 | } | |
7245 | else | |
7246 | { | |
7247 | int r = gif_color_map->Colors[i].Red << 8; | |
7248 | int g = gif_color_map->Colors[i].Green << 8; | |
7249 | int b = gif_color_map->Colors[i].Blue << 8; | |
7250 | pixel_colors[i] = lookup_rgb_color (f, r, g, b); | |
7251 | } | |
1ab2cd43 | 7252 | } |
4ef0d4d0 KS |
7253 | |
7254 | #ifdef COLOR_TABLE_SUPPORT | |
7255 | img->colors = colors_in_color_table (&img->ncolors); | |
7256 | free_color_table (); | |
7257 | #endif /* COLOR_TABLE_SUPPORT */ | |
7258 | ||
7259 | /* Clear the part of the screen image that are not covered by | |
7260 | the image from the GIF file. Full animated GIF support | |
7261 | requires more than can be done here (see the gif89 spec, | |
7262 | disposal methods). Let's simply assume that the part | |
7263 | not covered by a sub-image is in the frame's background color. */ | |
6ac3c7bb | 7264 | for (y = 0; y < img->corners[TOP_CORNER]; ++y) |
4ef0d4d0 KS |
7265 | for (x = 0; x < width; ++x) |
7266 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7267 | ||
6ac3c7bb | 7268 | for (y = img->corners[BOT_CORNER]; y < height; ++y) |
4ef0d4d0 KS |
7269 | for (x = 0; x < width; ++x) |
7270 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); | |
7271 | ||
6ac3c7bb | 7272 | for (y = img->corners[TOP_CORNER]; y < img->corners[BOT_CORNER]; ++y) |
4ef0d4d0 | 7273 | { |
6ac3c7bb | 7274 | for (x = 0; x < img->corners[LEFT_CORNER]; ++x) |
4ef0d4d0 | 7275 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
6ac3c7bb | 7276 | for (x = img->corners[RIGHT_CORNER]; x < width; ++x) |
4ef0d4d0 KS |
7277 | XPutPixel (ximg, x, y, FRAME_BACKGROUND_PIXEL (f)); |
7278 | } | |
7279 | ||
7280 | /* Read the GIF image into the X image. We use a local variable | |
7281 | `raster' here because RasterBits below is a char *, and invites | |
7282 | problems with bytes >= 0x80. */ | |
7283 | raster = (unsigned char *) gif->SavedImages[ino].RasterBits; | |
7284 | ||
7285 | if (gif->SavedImages[ino].ImageDesc.Interlace) | |
7286 | { | |
4ef0d4d0 KS |
7287 | int pass; |
7288 | int row = interlace_start[0]; | |
7289 | ||
7290 | pass = 0; | |
7291 | ||
7292 | for (y = 0; y < image_height; y++) | |
7293 | { | |
7294 | if (row >= image_height) | |
7295 | { | |
7296 | row = interlace_start[++pass]; | |
7297 | while (row >= image_height) | |
7298 | row = interlace_start[++pass]; | |
7299 | } | |
7300 | ||
7301 | for (x = 0; x < image_width; x++) | |
7302 | { | |
7303 | int i = raster[(y * image_width) + x]; | |
6ac3c7bb KS |
7304 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7305 | row + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7306 | } |
7307 | ||
7308 | row += interlace_increment[pass]; | |
7309 | } | |
7310 | } | |
7311 | else | |
7312 | { | |
7313 | for (y = 0; y < image_height; ++y) | |
7314 | for (x = 0; x < image_width; ++x) | |
7315 | { | |
7316 | int i = raster[y * image_width + x]; | |
6ac3c7bb KS |
7317 | XPutPixel (ximg, x + img->corners[LEFT_CORNER], |
7318 | y + img->corners[TOP_CORNER], pixel_colors[i]); | |
4ef0d4d0 KS |
7319 | } |
7320 | } | |
7321 | ||
1546c559 JL |
7322 | /* Save GIF image extension data for `image-metadata'. |
7323 | Format is (count IMAGES extension-data (FUNCTION "BYTES" ...)). */ | |
6ac3c7bb KS |
7324 | img->data.lisp_val = Qnil; |
7325 | if (gif->SavedImages[ino].ExtensionBlockCount > 0) | |
7326 | { | |
7327 | ExtensionBlock *ext = gif->SavedImages[ino].ExtensionBlocks; | |
7328 | for (i = 0; i < gif->SavedImages[ino].ExtensionBlockCount; i++, ext++) | |
7329 | /* Append (... FUNCTION "BYTES") */ | |
7330 | img->data.lisp_val = Fcons (make_unibyte_string (ext->Bytes, ext->ByteCount), | |
7331 | Fcons (make_number (ext->Function), | |
7332 | img->data.lisp_val)); | |
1546c559 JL |
7333 | img->data.lisp_val = Fcons (Qextension_data, |
7334 | Fcons (Fnreverse (img->data.lisp_val), | |
7335 | Qnil)); | |
6ac3c7bb KS |
7336 | } |
7337 | if (gif->ImageCount > 1) | |
7338 | img->data.lisp_val = Fcons (Qcount, | |
7339 | Fcons (make_number (gif->ImageCount), | |
7340 | img->data.lisp_val)); | |
7341 | ||
4ef0d4d0 KS |
7342 | fn_DGifCloseFile (gif); |
7343 | ||
7344 | /* Maybe fill in the background field while we have ximg handy. */ | |
7345 | if (NILP (image_spec_value (img->spec, QCbackground, NULL))) | |
2e09fef1 EZ |
7346 | /* Casting avoids a GCC warning. */ |
7347 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
4ef0d4d0 KS |
7348 | |
7349 | /* Put the image into the pixmap, then free the X image and its buffer. */ | |
7350 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
7351 | x_destroy_x_image (ximg); | |
7352 | ||
4ef0d4d0 KS |
7353 | return 1; |
7354 | } | |
7355 | ||
2e09fef1 | 7356 | #else /* !HAVE_GIF */ |
4ef0d4d0 | 7357 | |
edfda783 AR |
7358 | #ifdef HAVE_NS |
7359 | static int | |
7360 | gif_load (struct frame *f, struct image *img) | |
7361 | { | |
ed3751c8 JB |
7362 | return ns_load_image (f, img, |
7363 | image_spec_value (img->spec, QCfile, NULL), | |
7364 | image_spec_value (img->spec, QCdata, NULL)); | |
edfda783 AR |
7365 | } |
7366 | #endif /* HAVE_NS */ | |
7367 | ||
4ef0d4d0 KS |
7368 | #endif /* HAVE_GIF */ |
7369 | ||
7370 | ||
3de25479 JV |
7371 | /*********************************************************************** |
7372 | imagemagick | |
4917006b | 7373 | ***********************************************************************/ |
3de25479 | 7374 | #if defined (HAVE_IMAGEMAGICK) |
3de25479 JV |
7375 | |
7376 | /* The symbol `imagemagick' identifying images of this type. */ | |
7377 | ||
7378 | Lisp_Object Qimagemagick; | |
3de25479 JV |
7379 | /* Indices of image specification fields in imagemagick_format, below. */ |
7380 | ||
7381 | enum imagemagick_keyword_index | |
4917006b JV |
7382 | { |
7383 | IMAGEMAGICK_TYPE, | |
7384 | IMAGEMAGICK_DATA, | |
7385 | IMAGEMAGICK_FILE, | |
7386 | IMAGEMAGICK_ASCENT, | |
7387 | IMAGEMAGICK_MARGIN, | |
7388 | IMAGEMAGICK_RELIEF, | |
7389 | IMAGEMAGICK_ALGORITHM, | |
7390 | IMAGEMAGICK_HEURISTIC_MASK, | |
7391 | IMAGEMAGICK_MASK, | |
7392 | IMAGEMAGICK_BACKGROUND, | |
c7f514b5 JV |
7393 | IMAGEMAGICK_HEIGHT, |
7394 | IMAGEMAGICK_WIDTH, | |
7395 | IMAGEMAGICK_ROTATION, | |
7396 | IMAGEMAGICK_CROP, | |
4917006b JV |
7397 | IMAGEMAGICK_LAST |
7398 | }; | |
3de25479 JV |
7399 | |
7400 | /* Vector of image_keyword structures describing the format | |
7401 | of valid user-defined image specifications. */ | |
7402 | ||
7403 | static struct image_keyword imagemagick_format[IMAGEMAGICK_LAST] = | |
4917006b JV |
7404 | { |
7405 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7406 | {":data", IMAGE_STRING_VALUE, 0}, | |
7407 | {":file", IMAGE_STRING_VALUE, 0}, | |
7408 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7409 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7410 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7411 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7412 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7413 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
c7f514b5 | 7414 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0}, |
7574650a AS |
7415 | {":height", IMAGE_INTEGER_VALUE, 0}, |
7416 | {":width", IMAGE_INTEGER_VALUE, 0}, | |
7417 | {":rotation", IMAGE_NUMBER_VALUE, 0}, | |
c7f514b5 | 7418 | {":crop", IMAGE_DONT_CHECK_VALUE_TYPE, 0} |
4917006b | 7419 | }; |
3de25479 JV |
7420 | /* Free X resources of imagemagick image IMG which is used on frame F. */ |
7421 | ||
7422 | static void | |
4917006b JV |
7423 | imagemagick_clear_image (struct frame *f, |
7424 | struct image *img) | |
3de25479 | 7425 | { |
3de25479 JV |
7426 | x_clear_image (f, img); |
7427 | } | |
7428 | ||
3de25479 JV |
7429 | |
7430 | ||
7431 | /* Return non-zero if OBJECT is a valid IMAGEMAGICK image specification. Do | |
7432 | this by calling parse_image_spec and supplying the keywords that | |
7433 | identify the IMAGEMAGICK format. */ | |
7434 | ||
7435 | static int | |
4917006b | 7436 | imagemagick_image_p (Lisp_Object object) |
3de25479 JV |
7437 | { |
7438 | struct image_keyword fmt[IMAGEMAGICK_LAST]; | |
dbfe4532 | 7439 | memcpy (fmt, imagemagick_format, sizeof fmt); |
3de25479 JV |
7440 | |
7441 | if (!parse_image_spec (object, fmt, IMAGEMAGICK_LAST, Qimagemagick)) | |
7442 | return 0; | |
7443 | ||
7444 | /* Must specify either the :data or :file keyword. */ | |
7445 | return fmt[IMAGEMAGICK_FILE].count + fmt[IMAGEMAGICK_DATA].count == 1; | |
7446 | } | |
7447 | ||
7448 | /* The GIF library also defines DrawRectangle, but its never used in Emacs. | |
7449 | Therefore rename the function so it doesnt collide with ImageMagick. */ | |
7450 | #define DrawRectangle DrawRectangleGif | |
7451 | #include <wand/MagickWand.h> | |
7452 | ||
d2a2d277 JV |
7453 | /* imagemagick_load_image is a helper function for imagemagick_load, |
7454 | which does the actual loading given contents and size, apart from | |
7455 | frame and image structures, passed from imagemagick_load. | |
3de25479 JV |
7456 | |
7457 | Uses librimagemagick to do most of the image processing. | |
7458 | ||
f3700365 | 7459 | non-zero when successful. |
3de25479 JV |
7460 | */ |
7461 | ||
7462 | static int | |
d2a2d277 JV |
7463 | imagemagick_load_image (/* Pointer to emacs frame structure. */ |
7464 | struct frame *f, | |
7465 | /* Pointer to emacs image structure. */ | |
7574650a | 7466 | struct image *img, |
d2a2d277 JV |
7467 | /* String containing the IMAGEMAGICK data to |
7468 | be parsed. */ | |
7469 | unsigned char *contents, | |
7470 | /* Size of data in bytes. */ | |
7471 | unsigned int size, | |
7472 | /* Filename, either pass filename or | |
7473 | contents/size. */ | |
7474 | unsigned char *filename) | |
3de25479 | 7475 | { |
b7d187f8 AS |
7476 | unsigned long width; |
7477 | unsigned long height; | |
3de25479 JV |
7478 | |
7479 | MagickBooleanType | |
7480 | status; | |
7481 | ||
7482 | XImagePtr ximg; | |
7483 | Lisp_Object specified_bg; | |
7484 | XColor background; | |
7485 | int x; | |
7486 | int y; | |
7487 | ||
7488 | MagickWand *image_wand; | |
7574650a | 7489 | MagickWand *ping_wand; |
3de25479 JV |
7490 | PixelIterator *iterator; |
7491 | PixelWand **pixels; | |
7492 | MagickPixelPacket pixel; | |
4917006b | 7493 | Lisp_Object image; |
7574650a | 7494 | Lisp_Object value; |
4917006b JV |
7495 | Lisp_Object crop, geometry; |
7496 | long ino; | |
7497 | int desired_width, desired_height; | |
7498 | double rotation; | |
7499 | int imagemagick_rendermethod; | |
7574650a | 7500 | int pixelwidth; |
f3700365 JV |
7501 | ImageInfo *image_info; |
7502 | ExceptionInfo *exception; | |
7503 | Image * im_image; | |
3de25479 | 7504 | |
7574650a | 7505 | |
f3700365 JV |
7506 | /* Handle image index for image types who can contain more than one |
7507 | image. Interface :index is same as for GIF. First we "ping" the | |
7508 | image to see how many sub-images it contains. Pinging is faster | |
549a73b9 | 7509 | than loading the image to find out things about it. */ |
f853f599 | 7510 | |
03d32f1b | 7511 | /* `MagickWandGenesis' initializes the imagemagick environment. */ |
f853f599 | 7512 | MagickWandGenesis (); |
3de25479 JV |
7513 | image = image_spec_value (img->spec, QCindex, NULL); |
7514 | ino = INTEGERP (image) ? XFASTINT (image) : 0; | |
7574650a AS |
7515 | ping_wand = NewMagickWand (); |
7516 | MagickSetResolution (ping_wand, 2, 2); | |
f3700365 JV |
7517 | if (filename != NULL) |
7518 | { | |
7574650a | 7519 | status = MagickPingImage (ping_wand, filename); |
f3700365 JV |
7520 | } |
7521 | else | |
7522 | { | |
7574650a AS |
7523 | status = MagickPingImageBlob (ping_wand, contents, size); |
7524 | } | |
7525 | ||
7526 | if (ino >= MagickGetNumberImages (ping_wand)) | |
7527 | { | |
7528 | image_error ("Invalid image number `%s' in image `%s'", | |
7529 | image, img->spec); | |
7530 | DestroyMagickWand (ping_wand); | |
7531 | return 0; | |
f3700365 | 7532 | } |
431dab04 | 7533 | |
f3700365 | 7534 | if (MagickGetNumberImages(ping_wand) > 1) |
d2a2d277 JV |
7535 | img->data.lisp_val = |
7536 | Fcons (Qcount, | |
7574650a | 7537 | Fcons (make_number (MagickGetNumberImages (ping_wand)), |
d2a2d277 | 7538 | img->data.lisp_val)); |
f3700365 JV |
7539 | |
7540 | DestroyMagickWand (ping_wand); | |
f853f599 | 7541 | |
f3700365 | 7542 | /* Now, after pinging, we know how many images are inside the |
549a73b9 | 7543 | file. If its not a bundle, just one. */ |
f3700365 JV |
7544 | |
7545 | if (filename != NULL) | |
7546 | { | |
7574650a AS |
7547 | image_info = CloneImageInfo ((ImageInfo *) NULL); |
7548 | (void) strcpy (image_info->filename, filename); | |
7549 | image_info->number_scenes = 1; | |
7550 | image_info->scene = ino; | |
7551 | exception = AcquireExceptionInfo (); | |
f3700365 | 7552 | |
7574650a | 7553 | im_image = ReadImage (image_info, exception); |
466cbae9 | 7554 | DestroyExceptionInfo (exception); |
f3700365 | 7555 | |
466cbae9 AS |
7556 | if (im_image != NULL) |
7557 | { | |
7558 | image_wand = NewMagickWandFromImage (im_image); | |
f853f599 | 7559 | DestroyImage(im_image); |
466cbae9 AS |
7560 | status = MagickTrue; |
7561 | } | |
7562 | else | |
7563 | status = MagickFalse; | |
f3700365 | 7564 | } |
3de25479 | 7565 | else |
f3700365 | 7566 | { |
7574650a AS |
7567 | image_wand = NewMagickWand (); |
7568 | status = MagickReadImageBlob (image_wand, contents, size); | |
f3700365 | 7569 | } |
f853f599 | 7570 | |
f3700365 JV |
7571 | if (status == MagickFalse) goto imagemagick_error; |
7572 | ||
d2a2d277 | 7573 | /* If width and/or height is set in the display spec assume we want |
f3700365 JV |
7574 | to scale to those values. if either h or w is unspecified, the |
7575 | unspecified should be calculated from the specified to preserve | |
549a73b9 | 7576 | aspect ratio. */ |
3de25479 | 7577 | |
3de25479 JV |
7578 | value = image_spec_value (img->spec, QCwidth, NULL); |
7579 | desired_width = (INTEGERP (value) ? XFASTINT (value) : -1); | |
7580 | value = image_spec_value (img->spec, QCheight, NULL); | |
7581 | desired_height = (INTEGERP (value) ? XFASTINT (value) : -1); | |
c7f514b5 | 7582 | |
bdf6a35d JV |
7583 | height = MagickGetImageHeight (image_wand); |
7584 | width = MagickGetImageWidth (image_wand); | |
7585 | ||
7586 | if(desired_width != -1 && desired_height == -1) | |
7587 | { | |
549a73b9 | 7588 | /* w known, calculate h. */ |
7574650a | 7589 | desired_height = (double) desired_width / width * height; |
bdf6a35d JV |
7590 | } |
7591 | if(desired_width == -1 && desired_height != -1) | |
7592 | { | |
549a73b9 | 7593 | /* h known, calculate w. */ |
7574650a AS |
7594 | desired_width = (double) desired_height / height * width; |
7595 | } | |
4917006b JV |
7596 | if(desired_width != -1 && desired_height != -1) |
7597 | { | |
7574650a AS |
7598 | status = MagickScaleImage (image_wand, desired_width, desired_height); |
7599 | if (status == MagickFalse) | |
7600 | { | |
7601 | image_error ("Imagemagick scale failed", Qnil, Qnil); | |
7602 | goto imagemagick_error; | |
7603 | } | |
3de25479 | 7604 | } |
3de25479 | 7605 | |
3de25479 | 7606 | |
f3700365 | 7607 | /* crop behaves similar to image slicing in Emacs but is more memory |
7574650a AS |
7608 | efficient. */ |
7609 | crop = image_spec_value (img->spec, QCcrop, NULL); | |
7610 | ||
7611 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7612 | { | |
7613 | /* After some testing, it seems MagickCropImage is the fastest | |
7614 | crop function in ImageMagick. This crop function seems to do | |
f3700365 JV |
7615 | less copying than the alternatives, but it still reads the |
7616 | entire image into memory before croping, which is aparently | |
7574650a AS |
7617 | difficult to avoid when using imagemagick. */ |
7618 | ||
7619 | int w, h, x, y; | |
7620 | w = XFASTINT (XCAR (crop)); | |
7621 | crop = XCDR (crop); | |
7622 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7623 | { | |
7624 | h = XFASTINT (XCAR (crop)); | |
7625 | crop = XCDR (crop); | |
7626 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7627 | { | |
7628 | x = XFASTINT (XCAR (crop)); | |
7629 | crop = XCDR (crop); | |
7630 | if (CONSP (crop) && INTEGERP (XCAR (crop))) | |
7631 | { | |
7632 | y = XFASTINT (XCAR (crop)); | |
7633 | MagickCropImage (image_wand, w, h, x, y); | |
7634 | } | |
7635 | } | |
7636 | } | |
7637 | } | |
7638 | ||
d2a2d277 JV |
7639 | /* Furthermore :rotation. we need background color and angle for |
7640 | rotation. */ | |
3de25479 | 7641 | /* |
d2a2d277 JV |
7642 | TODO background handling for rotation specified_bg = |
7643 | image_spec_value (img->spec, QCbackground, NULL); if (!STRINGP | |
549a73b9 | 7644 | (specified_bg). */ |
4917006b JV |
7645 | value = image_spec_value (img->spec, QCrotation, NULL); |
7646 | if (FLOATP (value)) | |
7647 | { | |
7574650a | 7648 | PixelWand* background = NewPixelWand (); |
3de25479 | 7649 | PixelSetColor (background, "#ffffff");/*TODO remove hardcode*/ |
7574650a | 7650 | |
3de25479 | 7651 | rotation = extract_float (value); |
7574650a | 7652 | |
4917006b | 7653 | status = MagickRotateImage (image_wand, background, rotation); |
3de25479 | 7654 | DestroyPixelWand (background); |
4917006b JV |
7655 | if (status == MagickFalse) |
7656 | { | |
7657 | image_error ("Imagemagick image rotate failed", Qnil, Qnil); | |
7658 | goto imagemagick_error; | |
7659 | } | |
3de25479 | 7660 | } |
7574650a | 7661 | |
c7f514b5 | 7662 | /* Finaly we are done manipulating the image, figure out resulting |
549a73b9 | 7663 | width, height, and then transfer ownerwship to Emacs. */ |
4917006b JV |
7664 | height = MagickGetImageHeight (image_wand); |
7665 | width = MagickGetImageWidth (image_wand); | |
7574650a | 7666 | |
3de25479 JV |
7667 | if (! check_image_size (f, width, height)) |
7668 | { | |
7669 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
7670 | goto imagemagick_error; | |
7671 | } | |
7574650a | 7672 | |
3de25479 JV |
7673 | /* We can now get a valid pixel buffer from the imagemagick file, if all |
7674 | went ok. */ | |
3de25479 JV |
7675 | |
7676 | init_color_table (); | |
d2a2d277 JV |
7677 | imagemagick_rendermethod = (INTEGERP (Vimagemagick_render_type) |
7678 | ? XFASTINT (Vimagemagick_render_type) : 0); | |
4917006b JV |
7679 | if (imagemagick_rendermethod == 0) |
7680 | { | |
7681 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
d2a2d277 JV |
7682 | if (!x_create_x_image_and_pixmap (f, width, height, 0, |
7683 | &ximg, &img->pixmap)) | |
4917006b | 7684 | { |
466cbae9 AS |
7685 | #ifdef COLOR_TABLE_SUPPORT |
7686 | free_color_table (); | |
7687 | #endif | |
4917006b JV |
7688 | image_error("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
7689 | goto imagemagick_error; | |
7690 | } | |
7574650a | 7691 | |
4917006b JV |
7692 | /* Copy imagegmagick image to x with primitive yet robust pixel |
7693 | pusher loop. This has been tested a lot with many different | |
549a73b9 | 7694 | images. */ |
7574650a | 7695 | |
4917006b JV |
7696 | /* Copy pixels from the imagemagick image structure to the x image map. */ |
7697 | iterator = NewPixelIterator (image_wand); | |
7574650a | 7698 | if (iterator == (PixelIterator *) NULL) |
4917006b | 7699 | { |
466cbae9 AS |
7700 | #ifdef COLOR_TABLE_SUPPORT |
7701 | free_color_table (); | |
7702 | #endif | |
7703 | x_destroy_x_image (ximg); | |
d2a2d277 JV |
7704 | image_error ("Imagemagick pixel iterator creation failed", |
7705 | Qnil, Qnil); | |
3de25479 | 7706 | goto imagemagick_error; |
4917006b JV |
7707 | } |
7708 | ||
7574650a | 7709 | for (y = 0; y < (long) MagickGetImageHeight (image_wand); y++) |
4917006b JV |
7710 | { |
7711 | pixels = PixelGetNextIteratorRow (iterator, &width); | |
7574650a | 7712 | if (pixels == (PixelWand **) NULL) |
4917006b JV |
7713 | break; |
7714 | for (x = 0; x < (long) width; x++) | |
7715 | { | |
7716 | PixelGetMagickColor (pixels[x], &pixel); | |
d2a2d277 JV |
7717 | XPutPixel (ximg, x, y, |
7718 | lookup_rgb_color (f, | |
7719 | pixel.red, | |
7720 | pixel.green, | |
7721 | pixel.blue)); | |
4917006b JV |
7722 | } |
7723 | } | |
7724 | DestroyPixelIterator (iterator); | |
3de25479 JV |
7725 | } |
7726 | ||
4917006b JV |
7727 | if (imagemagick_rendermethod == 1) |
7728 | { | |
3234a340 JV |
7729 | /* Magicexportimage is normaly faster than pixelpushing. This |
7730 | method is also well tested. Some aspects of this method are | |
7731 | ad-hoc and needs to be more researched. */ | |
4917006b JV |
7732 | int imagedepth = 24;/*MagickGetImageDepth(image_wand);*/ |
7733 | char* exportdepth = imagedepth <= 8 ? "I" : "BGRP";/*"RGBP";*/ | |
7734 | /* Try to create a x pixmap to hold the imagemagick pixmap. */ | |
d2a2d277 | 7735 | if (!x_create_x_image_and_pixmap (f, width, height, imagedepth, |
7574650a AS |
7736 | &ximg, &img->pixmap)) |
7737 | { | |
466cbae9 AS |
7738 | #ifdef COLOR_TABLE_SUPPORT |
7739 | free_color_table (); | |
7740 | #endif | |
7574650a AS |
7741 | image_error("Imagemagick X bitmap allocation failure", Qnil, Qnil); |
7742 | goto imagemagick_error; | |
7743 | } | |
7744 | ||
3de25479 | 7745 | |
4917006b JV |
7746 | /* Oddly, the below code doesnt seem to work:*/ |
7747 | /* switch(ximg->bitmap_unit){ */ | |
7748 | /* case 8: */ | |
7749 | /* pixelwidth=CharPixel; */ | |
7750 | /* break; */ | |
7751 | /* case 16: */ | |
7752 | /* pixelwidth=ShortPixel; */ | |
7753 | /* break; */ | |
7754 | /* case 32: */ | |
7755 | /* pixelwidth=LongPixel; */ | |
7756 | /* break; */ | |
7757 | /* } */ | |
7758 | /* | |
7759 | Here im just guessing the format of the bitmap. | |
7760 | happens to work fine for: | |
7761 | - bw djvu images | |
7762 | on rgb display. | |
7763 | seems about 3 times as fast as pixel pushing(not carefully measured) | |
4917006b JV |
7764 | */ |
7765 | pixelwidth = CharPixel;/*??? TODO figure out*/ | |
7574650a AS |
7766 | #ifdef HAVE_MAGICKEXPORTIMAGEPIXELS |
7767 | MagickExportImagePixels (image_wand, | |
7768 | 0, 0, | |
7769 | width, height, | |
7770 | exportdepth, | |
7771 | pixelwidth, | |
7772 | /*&(img->pixmap));*/ | |
7773 | ximg->data); | |
431dab04 | 7774 | #else |
7574650a AS |
7775 | image_error ("You dont have MagickExportImagePixels, upgrade ImageMagick!", |
7776 | Qnil, Qnil); | |
7777 | #endif | |
4917006b | 7778 | } |
7574650a | 7779 | |
3ed42149 | 7780 | |
3de25479 JV |
7781 | #ifdef COLOR_TABLE_SUPPORT |
7782 | /* Remember colors allocated for this image. */ | |
7783 | img->colors = colors_in_color_table (&img->ncolors); | |
7784 | free_color_table (); | |
7785 | #endif /* COLOR_TABLE_SUPPORT */ | |
7786 | ||
7787 | ||
7788 | img->width = width; | |
7789 | img->height = height; | |
7790 | ||
3de25479 JV |
7791 | /* Put the image into the pixmap, then free the X image and its |
7792 | buffer. */ | |
7793 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
3de25479 JV |
7794 | x_destroy_x_image (ximg); |
7795 | ||
7796 | ||
f3700365 | 7797 | /* Final cleanup. image_wand should be the only resource left. */ |
3de25479 | 7798 | DestroyMagickWand (image_wand); |
03d32f1b | 7799 | /* `MagickWandTerminus' terminates the imagemagick environment. */ |
f853f599 | 7800 | MagickWandTerminus (); |
3de25479 JV |
7801 | |
7802 | return 1; | |
7803 | ||
7804 | imagemagick_error: | |
466cbae9 | 7805 | DestroyMagickWand (image_wand); |
f853f599 | 7806 | MagickWandTerminus (); |
3de25479 JV |
7807 | /* TODO more cleanup. */ |
7808 | image_error ("Error parsing IMAGEMAGICK image `%s'", img->spec, Qnil); | |
3de25479 JV |
7809 | return 0; |
7810 | } | |
7811 | ||
4917006b JV |
7812 | |
7813 | /* Load IMAGEMAGICK image IMG for use on frame F. Value is non-zero if | |
7814 | successful. this function will go into the imagemagick_type structure, and | |
7815 | the prototype thus needs to be compatible with that structure. */ | |
7816 | ||
7817 | static int | |
7818 | imagemagick_load (struct frame *f, | |
7819 | struct image *img) | |
7820 | { | |
7821 | int success_p = 0; | |
7822 | Lisp_Object file_name; | |
7823 | ||
7824 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
7825 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
7826 | if (STRINGP (file_name)) | |
7827 | { | |
7828 | Lisp_Object file; | |
4917006b JV |
7829 | |
7830 | file = x_find_image_file (file_name); | |
4917006b JV |
7831 | if (!STRINGP (file)) |
7832 | { | |
7833 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
4917006b JV |
7834 | return 0; |
7835 | } | |
7574650a | 7836 | success_p = imagemagick_load_image (f, img, 0, 0, SDATA (file)); |
4917006b JV |
7837 | } |
7838 | /* Else its not a file, its a lisp object. Load the image from a | |
7839 | lisp object rather than a file. */ | |
7840 | else | |
7841 | { | |
7842 | Lisp_Object data; | |
7843 | ||
7844 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
7845 | if (!STRINGP (data)) |
7846 | { | |
7847 | image_error ("Invalid image data `%s'", data, Qnil); | |
7848 | return 0; | |
7849 | } | |
d2a2d277 JV |
7850 | success_p = imagemagick_load_image (f, img, SDATA (data), |
7851 | SBYTES (data), NULL); | |
4917006b JV |
7852 | } |
7853 | ||
7854 | return success_p; | |
7855 | } | |
7856 | ||
d2a2d277 JV |
7857 | /* Structure describing the image type `imagemagick'. Its the same |
7858 | type of structure defined for all image formats, handled by Emacs | |
7859 | image functions. See struct image_type in dispextern.h. */ | |
4917006b JV |
7860 | |
7861 | static struct image_type imagemagick_type = | |
7862 | { | |
d2a2d277 JV |
7863 | /* An identifier showing that this is an image structure for the |
7864 | IMAGEMAGICK format. */ | |
4917006b | 7865 | &Qimagemagick, |
d2a2d277 JV |
7866 | /* Handle to a function that can be used to identify a IMAGEMAGICK |
7867 | file. */ | |
4917006b JV |
7868 | imagemagick_image_p, |
7869 | /* Handle to function used to load a IMAGEMAGICK file. */ | |
7870 | imagemagick_load, | |
7871 | /* Handle to function to free resources for IMAGEMAGICK. */ | |
7872 | imagemagick_clear_image, | |
7873 | /* An internal field to link to the next image type in a list of | |
7874 | image types, will be filled in when registering the format. */ | |
7875 | NULL | |
7876 | }; | |
7877 | ||
7878 | ||
7879 | ||
7880 | ||
7574650a | 7881 | DEFUN ("imagemagick-types", Fimagemagick_types, Simagemagick_types, 0, 0, 0, |
3de25479 | 7882 | doc: /* Return image file types supported by ImageMagick. |
5e5992c2 AS |
7883 | Since ImageMagick recognizes a lot of file-types that clash with Emacs, |
7884 | such as .c, we want to be able to alter the list at the lisp level. */) | |
a8101f66 | 7885 | (void) |
3de25479 JV |
7886 | { |
7887 | Lisp_Object typelist = Qnil; | |
b7d187f8 | 7888 | unsigned long numf; |
3de25479 | 7889 | ExceptionInfo ex; |
7574650a | 7890 | char **imtypes = GetMagickList ("*", &numf, &ex); |
3de25479 JV |
7891 | int i; |
7892 | Lisp_Object Qimagemagicktype; | |
4917006b JV |
7893 | for (i = 0; i < numf; i++) |
7894 | { | |
7895 | Qimagemagicktype = intern (imtypes[i]); | |
f3700365 JV |
7896 | typelist = Fcons (Qimagemagicktype, typelist); |
7897 | } | |
7898 | return typelist; | |
3de25479 | 7899 | } |
7574650a | 7900 | |
3de25479 JV |
7901 | #endif /* defined (HAVE_IMAGEMAGICK) */ |
7902 | ||
7903 | ||
4ef0d4d0 | 7904 | \f |
4ab27a43 GM |
7905 | /*********************************************************************** |
7906 | SVG | |
b0c396f7 | 7907 | ***********************************************************************/ |
4ab27a43 GM |
7908 | |
7909 | #if defined (HAVE_RSVG) | |
7910 | ||
7911 | /* Function prototypes. */ | |
7912 | ||
f57e2426 J |
7913 | static int svg_image_p (Lisp_Object object); |
7914 | static int svg_load (struct frame *f, struct image *img); | |
4ab27a43 | 7915 | |
f57e2426 J |
7916 | static int svg_load_image (struct frame *, struct image *, |
7917 | unsigned char *, unsigned int); | |
4ab27a43 GM |
7918 | |
7919 | /* The symbol `svg' identifying images of this type. */ | |
7920 | ||
7921 | Lisp_Object Qsvg; | |
7922 | ||
7923 | /* Indices of image specification fields in svg_format, below. */ | |
7924 | ||
7925 | enum svg_keyword_index | |
b0c396f7 JV |
7926 | { |
7927 | SVG_TYPE, | |
7928 | SVG_DATA, | |
7929 | SVG_FILE, | |
7930 | SVG_ASCENT, | |
7931 | SVG_MARGIN, | |
7932 | SVG_RELIEF, | |
7933 | SVG_ALGORITHM, | |
7934 | SVG_HEURISTIC_MASK, | |
7935 | SVG_MASK, | |
7936 | SVG_BACKGROUND, | |
7937 | SVG_LAST | |
7938 | }; | |
4ab27a43 GM |
7939 | |
7940 | /* Vector of image_keyword structures describing the format | |
7941 | of valid user-defined image specifications. */ | |
7942 | ||
91433552 | 7943 | static const struct image_keyword svg_format[SVG_LAST] = |
b0c396f7 JV |
7944 | { |
7945 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
7946 | {":data", IMAGE_STRING_VALUE, 0}, | |
7947 | {":file", IMAGE_STRING_VALUE, 0}, | |
7948 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
7949 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
7950 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
7951 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7952 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7953 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
7954 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
7955 | }; | |
4ab27a43 GM |
7956 | |
7957 | /* Structure describing the image type `svg'. Its the same type of | |
7958 | structure defined for all image formats, handled by emacs image | |
7959 | functions. See struct image_type in dispextern.h. */ | |
7960 | ||
7961 | static struct image_type svg_type = | |
b0c396f7 JV |
7962 | { |
7963 | /* An identifier showing that this is an image structure for the SVG format. */ | |
7964 | &Qsvg, | |
7965 | /* Handle to a function that can be used to identify a SVG file. */ | |
7966 | svg_image_p, | |
7967 | /* Handle to function used to load a SVG file. */ | |
7968 | svg_load, | |
7969 | /* Handle to function to free sresources for SVG. */ | |
7970 | x_clear_image, | |
7971 | /* An internal field to link to the next image type in a list of | |
7972 | image types, will be filled in when registering the format. */ | |
7973 | NULL | |
7974 | }; | |
4ab27a43 GM |
7975 | |
7976 | ||
7977 | /* Return non-zero if OBJECT is a valid SVG image specification. Do | |
7978 | this by calling parse_image_spec and supplying the keywords that | |
7979 | identify the SVG format. */ | |
7980 | ||
7981 | static int | |
d3da34e0 | 7982 | svg_image_p (Lisp_Object object) |
4ab27a43 GM |
7983 | { |
7984 | struct image_keyword fmt[SVG_LAST]; | |
72af86bd | 7985 | memcpy (fmt, svg_format, sizeof fmt); |
4ab27a43 GM |
7986 | |
7987 | if (!parse_image_spec (object, fmt, SVG_LAST, Qsvg)) | |
7988 | return 0; | |
7989 | ||
7990 | /* Must specify either the :data or :file keyword. */ | |
7991 | return fmt[SVG_FILE].count + fmt[SVG_DATA].count == 1; | |
7992 | } | |
7993 | ||
7994 | #include <librsvg/rsvg.h> | |
7995 | ||
5fc9fdeb JR |
7996 | #ifdef HAVE_NTGUI |
7997 | ||
7998 | /* SVG library functions. */ | |
df61c790 AS |
7999 | DEF_IMGLIB_FN (RsvgHandle *, rsvg_handle_new); |
8000 | DEF_IMGLIB_FN (void, rsvg_handle_get_dimensions); | |
8001 | DEF_IMGLIB_FN (gboolean, rsvg_handle_write); | |
8002 | DEF_IMGLIB_FN (gboolean, rsvg_handle_close); | |
8003 | DEF_IMGLIB_FN (GdkPixbuf *, rsvg_handle_get_pixbuf); | |
8004 | DEF_IMGLIB_FN (void, rsvg_handle_free); | |
8005 | ||
8006 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_width); | |
8007 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_height); | |
8008 | DEF_IMGLIB_FN (guchar *, gdk_pixbuf_get_pixels); | |
8009 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_rowstride); | |
8010 | DEF_IMGLIB_FN (GdkColorspace, gdk_pixbuf_get_colorspace); | |
8011 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_n_channels); | |
8012 | DEF_IMGLIB_FN (gboolean, gdk_pixbuf_get_has_alpha); | |
8013 | DEF_IMGLIB_FN (int, gdk_pixbuf_get_bits_per_sample); | |
8014 | ||
8015 | DEF_IMGLIB_FN (void, g_type_init); | |
8016 | DEF_IMGLIB_FN (void, g_object_unref); | |
8017 | DEF_IMGLIB_FN (void, g_error_free); | |
5fc9fdeb | 8018 | |
df23bf08 | 8019 | Lisp_Object Qgdk_pixbuf, Qglib, Qgobject; |
5fc9fdeb JR |
8020 | |
8021 | static int | |
8022 | init_svg_functions (Lisp_Object libraries) | |
8023 | { | |
df23bf08 | 8024 | HMODULE library, gdklib, glib, gobject; |
5fc9fdeb JR |
8025 | |
8026 | if (!(glib = w32_delayed_load (libraries, Qglib)) | |
df23bf08 | 8027 | || !(gobject = w32_delayed_load (libraries, Qgobject)) |
5fc9fdeb JR |
8028 | || !(gdklib = w32_delayed_load (libraries, Qgdk_pixbuf)) |
8029 | || !(library = w32_delayed_load (libraries, Qsvg))) | |
8030 | return 0; | |
8031 | ||
8032 | LOAD_IMGLIB_FN (library, rsvg_handle_new); | |
e025c9c2 | 8033 | LOAD_IMGLIB_FN (library, rsvg_handle_get_dimensions); |
5fc9fdeb JR |
8034 | LOAD_IMGLIB_FN (library, rsvg_handle_write); |
8035 | LOAD_IMGLIB_FN (library, rsvg_handle_close); | |
8036 | LOAD_IMGLIB_FN (library, rsvg_handle_get_pixbuf); | |
8037 | LOAD_IMGLIB_FN (library, rsvg_handle_free); | |
8038 | ||
8039 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_width); | |
8040 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_height); | |
8041 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_pixels); | |
8042 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_rowstride); | |
8043 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_colorspace); | |
8044 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_n_channels); | |
8045 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_has_alpha); | |
8046 | LOAD_IMGLIB_FN (gdklib, gdk_pixbuf_get_bits_per_sample); | |
8047 | ||
df23bf08 JR |
8048 | LOAD_IMGLIB_FN (gobject, g_type_init); |
8049 | LOAD_IMGLIB_FN (gobject, g_object_unref); | |
5fc9fdeb | 8050 | LOAD_IMGLIB_FN (glib, g_error_free); |
df23bf08 | 8051 | |
5fc9fdeb JR |
8052 | return 1; |
8053 | } | |
4ab27a43 | 8054 | |
5fc9fdeb JR |
8055 | #else |
8056 | /* The following aliases for library functions allow dynamic loading | |
8057 | to be used on some platforms. */ | |
4ab27a43 | 8058 | #define fn_rsvg_handle_new rsvg_handle_new |
e025c9c2 | 8059 | #define fn_rsvg_handle_get_dimensions rsvg_handle_get_dimensions |
4ab27a43 GM |
8060 | #define fn_rsvg_handle_write rsvg_handle_write |
8061 | #define fn_rsvg_handle_close rsvg_handle_close | |
8062 | #define fn_rsvg_handle_get_pixbuf rsvg_handle_get_pixbuf | |
8063 | #define fn_rsvg_handle_free rsvg_handle_free | |
8064 | ||
5fc9fdeb JR |
8065 | #define fn_gdk_pixbuf_get_width gdk_pixbuf_get_width |
8066 | #define fn_gdk_pixbuf_get_height gdk_pixbuf_get_height | |
8067 | #define fn_gdk_pixbuf_get_pixels gdk_pixbuf_get_pixels | |
8068 | #define fn_gdk_pixbuf_get_rowstride gdk_pixbuf_get_rowstride | |
8069 | #define fn_gdk_pixbuf_get_colorspace gdk_pixbuf_get_colorspace | |
8070 | #define fn_gdk_pixbuf_get_n_channels gdk_pixbuf_get_n_channels | |
8071 | #define fn_gdk_pixbuf_get_has_alpha gdk_pixbuf_get_has_alpha | |
4ab27a43 GM |
8072 | #define fn_gdk_pixbuf_get_bits_per_sample gdk_pixbuf_get_bits_per_sample |
8073 | ||
5fc9fdeb JR |
8074 | #define fn_g_type_init g_type_init |
8075 | #define fn_g_object_unref g_object_unref | |
8076 | #define fn_g_error_free g_error_free | |
8077 | #endif /* !HAVE_NTGUI */ | |
4ab27a43 GM |
8078 | |
8079 | /* Load SVG image IMG for use on frame F. Value is non-zero if | |
8080 | successful. this function will go into the svg_type structure, and | |
8081 | the prototype thus needs to be compatible with that structure. */ | |
8082 | ||
8083 | static int | |
d3da34e0 | 8084 | svg_load (struct frame *f, struct image *img) |
4ab27a43 GM |
8085 | { |
8086 | int success_p = 0; | |
8087 | Lisp_Object file_name; | |
8088 | ||
8089 | /* If IMG->spec specifies a file name, create a non-file spec from it. */ | |
8090 | file_name = image_spec_value (img->spec, QCfile, NULL); | |
8091 | if (STRINGP (file_name)) | |
8092 | { | |
8093 | Lisp_Object file; | |
8094 | unsigned char *contents; | |
8095 | int size; | |
4ab27a43 GM |
8096 | |
8097 | file = x_find_image_file (file_name); | |
4ab27a43 | 8098 | if (!STRINGP (file)) |
c21e6151 YM |
8099 | { |
8100 | image_error ("Cannot find image file `%s'", file_name, Qnil); | |
c21e6151 YM |
8101 | return 0; |
8102 | } | |
8103 | ||
4ab27a43 GM |
8104 | /* Read the entire file into memory. */ |
8105 | contents = slurp_file (SDATA (file), &size); | |
8106 | if (contents == NULL) | |
c21e6151 YM |
8107 | { |
8108 | image_error ("Error loading SVG image `%s'", img->spec, Qnil); | |
c21e6151 YM |
8109 | return 0; |
8110 | } | |
4ab27a43 | 8111 | /* If the file was slurped into memory properly, parse it. */ |
c21e6151 | 8112 | success_p = svg_load_image (f, img, contents, size); |
4ab27a43 | 8113 | xfree (contents); |
4ab27a43 GM |
8114 | } |
8115 | /* Else its not a file, its a lisp object. Load the image from a | |
8116 | lisp object rather than a file. */ | |
8117 | else | |
8118 | { | |
8119 | Lisp_Object data; | |
8120 | ||
8121 | data = image_spec_value (img->spec, QCdata, NULL); | |
7574650a AS |
8122 | if (!STRINGP (data)) |
8123 | { | |
8124 | image_error ("Invalid image data `%s'", data, Qnil); | |
8125 | return 0; | |
8126 | } | |
4ab27a43 GM |
8127 | success_p = svg_load_image (f, img, SDATA (data), SBYTES (data)); |
8128 | } | |
8129 | ||
8130 | return success_p; | |
8131 | } | |
8132 | ||
bbe6f2aa JB |
8133 | /* svg_load_image is a helper function for svg_load, which does the |
8134 | actual loading given contents and size, apart from frame and image | |
8135 | structures, passed from svg_load. | |
4ab27a43 | 8136 | |
bbe6f2aa | 8137 | Uses librsvg to do most of the image processing. |
c21e6151 | 8138 | |
bbe6f2aa | 8139 | Returns non-zero when successful. */ |
4ab27a43 | 8140 | static int |
d3da34e0 JB |
8141 | svg_load_image (struct frame *f, /* Pointer to emacs frame structure. */ |
8142 | struct image *img, /* Pointer to emacs image structure. */ | |
8143 | unsigned char *contents, /* String containing the SVG XML data to be parsed. */ | |
8144 | unsigned int size) /* Size of data in bytes. */ | |
4ab27a43 GM |
8145 | { |
8146 | RsvgHandle *rsvg_handle; | |
e025c9c2 | 8147 | RsvgDimensionData dimension_data; |
4ab27a43 GM |
8148 | GError *error = NULL; |
8149 | GdkPixbuf *pixbuf; | |
8150 | int width; | |
8151 | int height; | |
8152 | const guint8 *pixels; | |
8153 | int rowstride; | |
8154 | XImagePtr ximg; | |
c21e6151 | 8155 | Lisp_Object specified_bg; |
4ab27a43 GM |
8156 | XColor background; |
8157 | int x; | |
8158 | int y; | |
8159 | ||
8160 | /* g_type_init is a glib function that must be called prior to using | |
8161 | gnome type library functions. */ | |
5fc9fdeb | 8162 | fn_g_type_init (); |
4ab27a43 | 8163 | /* Make a handle to a new rsvg object. */ |
df61c790 | 8164 | rsvg_handle = fn_rsvg_handle_new (); |
4ab27a43 GM |
8165 | |
8166 | /* Parse the contents argument and fill in the rsvg_handle. */ | |
8167 | fn_rsvg_handle_write (rsvg_handle, contents, size, &error); | |
e025c9c2 | 8168 | if (error) goto rsvg_error; |
4ab27a43 GM |
8169 | |
8170 | /* The parsing is complete, rsvg_handle is ready to used, close it | |
8171 | for further writes. */ | |
8172 | fn_rsvg_handle_close (rsvg_handle, &error); | |
e025c9c2 CY |
8173 | if (error) goto rsvg_error; |
8174 | ||
8175 | fn_rsvg_handle_get_dimensions (rsvg_handle, &dimension_data); | |
8176 | if (! check_image_size (f, dimension_data.width, dimension_data.height)) | |
10ea2b82 JR |
8177 | { |
8178 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); | |
8179 | goto rsvg_error; | |
8180 | } | |
b2996e57 | 8181 | |
4ab27a43 GM |
8182 | /* We can now get a valid pixel buffer from the svg file, if all |
8183 | went ok. */ | |
df61c790 | 8184 | pixbuf = fn_rsvg_handle_get_pixbuf (rsvg_handle); |
e025c9c2 CY |
8185 | if (!pixbuf) goto rsvg_error; |
8186 | fn_g_object_unref (rsvg_handle); | |
4ab27a43 GM |
8187 | |
8188 | /* Extract some meta data from the svg handle. */ | |
8189 | width = fn_gdk_pixbuf_get_width (pixbuf); | |
8190 | height = fn_gdk_pixbuf_get_height (pixbuf); | |
df61c790 | 8191 | pixels = fn_gdk_pixbuf_get_pixels (pixbuf); |
4ab27a43 GM |
8192 | rowstride = fn_gdk_pixbuf_get_rowstride (pixbuf); |
8193 | ||
8194 | /* Validate the svg meta data. */ | |
8195 | eassert (fn_gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB); | |
8196 | eassert (fn_gdk_pixbuf_get_n_channels (pixbuf) == 4); | |
8197 | eassert (fn_gdk_pixbuf_get_has_alpha (pixbuf)); | |
8198 | eassert (fn_gdk_pixbuf_get_bits_per_sample (pixbuf) == 8); | |
8199 | ||
8200 | /* Try to create a x pixmap to hold the svg pixmap. */ | |
c21e6151 YM |
8201 | if (!x_create_x_image_and_pixmap (f, width, height, 0, &ximg, &img->pixmap)) |
8202 | { | |
5fc9fdeb | 8203 | fn_g_object_unref (pixbuf); |
c21e6151 YM |
8204 | return 0; |
8205 | } | |
4ab27a43 GM |
8206 | |
8207 | init_color_table (); | |
8208 | ||
c21e6151 YM |
8209 | /* Handle alpha channel by combining the image with a background |
8210 | color. */ | |
8211 | specified_bg = image_spec_value (img->spec, QCbackground, NULL); | |
8d3c4e79 CY |
8212 | if (!STRINGP (specified_bg) |
8213 | || !x_defined_color (f, SDATA (specified_bg), &background, 0)) | |
c21e6151 | 8214 | { |
d7e008d0 | 8215 | #ifndef HAVE_NS |
c21e6151 YM |
8216 | background.pixel = FRAME_BACKGROUND_PIXEL (f); |
8217 | x_query_color (f, &background); | |
d7e008d0 | 8218 | #else |
ed3751c8 | 8219 | ns_query_color (FRAME_BACKGROUND_COLOR (f), &background, 1); |
d7e008d0 | 8220 | #endif |
c21e6151 | 8221 | } |
4ab27a43 | 8222 | |
8d3c4e79 CY |
8223 | /* SVG pixmaps specify transparency in the last byte, so right |
8224 | shift 8 bits to get rid of it, since emacs doesn't support | |
8225 | transparency. */ | |
8226 | background.red >>= 8; | |
8227 | background.green >>= 8; | |
8228 | background.blue >>= 8; | |
8229 | ||
4ab27a43 GM |
8230 | /* This loop handles opacity values, since Emacs assumes |
8231 | non-transparent images. Each pixel must be "flattened" by | |
bbe6f2aa JB |
8232 | calculating the resulting color, given the transparency of the |
8233 | pixel, and the image background color. */ | |
4ab27a43 GM |
8234 | for (y = 0; y < height; ++y) |
8235 | { | |
8236 | for (x = 0; x < width; ++x) | |
8237 | { | |
8238 | unsigned red; | |
8239 | unsigned green; | |
8240 | unsigned blue; | |
8241 | unsigned opacity; | |
8242 | ||
8243 | red = *pixels++; | |
8244 | green = *pixels++; | |
8245 | blue = *pixels++; | |
8246 | opacity = *pixels++; | |
8247 | ||
8248 | red = ((red * opacity) | |
8249 | + (background.red * ((1 << 8) - opacity))); | |
8250 | green = ((green * opacity) | |
8251 | + (background.green * ((1 << 8) - opacity))); | |
8252 | blue = ((blue * opacity) | |
8253 | + (background.blue * ((1 << 8) - opacity))); | |
8254 | ||
8255 | XPutPixel (ximg, x, y, lookup_rgb_color (f, red, green, blue)); | |
8256 | } | |
8257 | ||
8258 | pixels += rowstride - 4 * width; | |
8259 | } | |
8260 | ||
8261 | #ifdef COLOR_TABLE_SUPPORT | |
8262 | /* Remember colors allocated for this image. */ | |
8263 | img->colors = colors_in_color_table (&img->ncolors); | |
8264 | free_color_table (); | |
8265 | #endif /* COLOR_TABLE_SUPPORT */ | |
8266 | ||
5fc9fdeb | 8267 | fn_g_object_unref (pixbuf); |
4ab27a43 | 8268 | |
c21e6151 YM |
8269 | img->width = width; |
8270 | img->height = height; | |
8271 | ||
8272 | /* Maybe fill in the background field while we have ximg handy. | |
8273 | Casting avoids a GCC warning. */ | |
8274 | IMAGE_BACKGROUND (img, f, (XImagePtr_or_DC)ximg); | |
8275 | ||
4ab27a43 GM |
8276 | /* Put the image into the pixmap, then free the X image and its |
8277 | buffer. */ | |
8278 | x_put_x_image (f, ximg, img->pixmap, width, height); | |
8279 | x_destroy_x_image (ximg); | |
8280 | ||
4ab27a43 GM |
8281 | return 1; |
8282 | ||
8283 | rsvg_error: | |
e025c9c2 | 8284 | fn_g_object_unref (rsvg_handle); |
4ab27a43 GM |
8285 | /* FIXME: Use error->message so the user knows what is the actual |
8286 | problem with the image. */ | |
8287 | image_error ("Error parsing SVG image `%s'", img->spec, Qnil); | |
5fc9fdeb | 8288 | fn_g_error_free (error); |
4ab27a43 GM |
8289 | return 0; |
8290 | } | |
8291 | ||
8292 | #endif /* defined (HAVE_RSVG) */ | |
8293 | ||
8294 | ||
8295 | ||
4ef0d4d0 KS |
8296 | \f |
8297 | /*********************************************************************** | |
8298 | Ghostscript | |
b0c396f7 | 8299 | ***********************************************************************/ |
4ef0d4d0 KS |
8300 | |
8301 | #ifdef HAVE_X_WINDOWS | |
8302 | #define HAVE_GHOSTSCRIPT 1 | |
8303 | #endif /* HAVE_X_WINDOWS */ | |
8304 | ||
4ef0d4d0 KS |
8305 | #ifdef HAVE_GHOSTSCRIPT |
8306 | ||
f57e2426 J |
8307 | static int gs_image_p (Lisp_Object object); |
8308 | static int gs_load (struct frame *f, struct image *img); | |
8309 | static void gs_clear_image (struct frame *f, struct image *img); | |
4ef0d4d0 KS |
8310 | |
8311 | /* Keyword symbols. */ | |
8312 | ||
8313 | Lisp_Object QCloader, QCbounding_box, QCpt_width, QCpt_height; | |
8314 | ||
8315 | /* Indices of image specification fields in gs_format, below. */ | |
8316 | ||
8317 | enum gs_keyword_index | |
b0c396f7 JV |
8318 | { |
8319 | GS_TYPE, | |
8320 | GS_PT_WIDTH, | |
8321 | GS_PT_HEIGHT, | |
8322 | GS_FILE, | |
8323 | GS_LOADER, | |
8324 | GS_BOUNDING_BOX, | |
8325 | GS_ASCENT, | |
8326 | GS_MARGIN, | |
8327 | GS_RELIEF, | |
8328 | GS_ALGORITHM, | |
8329 | GS_HEURISTIC_MASK, | |
8330 | GS_MASK, | |
8331 | GS_BACKGROUND, | |
8332 | GS_LAST | |
8333 | }; | |
4ef0d4d0 KS |
8334 | |
8335 | /* Vector of image_keyword structures describing the format | |
8336 | of valid user-defined image specifications. */ | |
8337 | ||
91433552 | 8338 | static const struct image_keyword gs_format[GS_LAST] = |
b0c396f7 JV |
8339 | { |
8340 | {":type", IMAGE_SYMBOL_VALUE, 1}, | |
8341 | {":pt-width", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8342 | {":pt-height", IMAGE_POSITIVE_INTEGER_VALUE, 1}, | |
8343 | {":file", IMAGE_STRING_VALUE, 1}, | |
8344 | {":loader", IMAGE_FUNCTION_VALUE, 0}, | |
8345 | {":bounding-box", IMAGE_DONT_CHECK_VALUE_TYPE, 1}, | |
8346 | {":ascent", IMAGE_ASCENT_VALUE, 0}, | |
8347 | {":margin", IMAGE_POSITIVE_INTEGER_VALUE_OR_PAIR, 0}, | |
8348 | {":relief", IMAGE_INTEGER_VALUE, 0}, | |
8349 | {":conversion", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8350 | {":heuristic-mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8351 | {":mask", IMAGE_DONT_CHECK_VALUE_TYPE, 0}, | |
8352 | {":background", IMAGE_STRING_OR_NIL_VALUE, 0} | |
8353 | }; | |
4ef0d4d0 KS |
8354 | |
8355 | /* Structure describing the image type `ghostscript'. */ | |
8356 | ||
8357 | static struct image_type gs_type = | |
b0c396f7 JV |
8358 | { |
8359 | &Qpostscript, | |
8360 | gs_image_p, | |
8361 | gs_load, | |
8362 | gs_clear_image, | |
8363 | NULL | |
8364 | }; | |
4ef0d4d0 KS |
8365 | |
8366 | ||
8367 | /* Free X resources of Ghostscript image IMG which is used on frame F. */ | |
8368 | ||
8369 | static void | |
d3da34e0 | 8370 | gs_clear_image (struct frame *f, struct image *img) |
4ef0d4d0 KS |
8371 | { |
8372 | /* IMG->data.ptr_val may contain a recorded colormap. */ | |
8373 | xfree (img->data.ptr_val); | |
8374 | x_clear_image (f, img); | |
8375 | } | |
8376 | ||
8377 | ||
8378 | /* Return non-zero if OBJECT is a valid Ghostscript image | |
8379 | specification. */ | |
8380 | ||
8381 | static int | |
d3da34e0 | 8382 | gs_image_p (Lisp_Object object) |
4ef0d4d0 KS |
8383 | { |
8384 | struct image_keyword fmt[GS_LAST]; | |
8385 | Lisp_Object tem; | |
8386 | int i; | |
8387 | ||
72af86bd | 8388 | memcpy (fmt, gs_format, sizeof fmt); |
4ef0d4d0 KS |
8389 | |
8390 | if (!parse_image_spec (object, fmt, GS_LAST, Qpostscript)) | |
8391 | return 0; | |
8392 | ||
8393 | /* Bounding box must be a list or vector containing 4 integers. */ | |
8394 | tem = fmt[GS_BOUNDING_BOX].value; | |
8395 | if (CONSP (tem)) | |
8396 | { | |
8397 | for (i = 0; i < 4; ++i, tem = XCDR (tem)) | |
8398 | if (!CONSP (tem) || !INTEGERP (XCAR (tem))) | |
8399 | return 0; | |
8400 | if (!NILP (tem)) | |
8401 | return 0; | |
8402 | } | |
8403 | else if (VECTORP (tem)) | |
8404 | { | |
8405 | if (XVECTOR (tem)->size != 4) | |
8406 | return 0; | |
8407 | for (i = 0; i < 4; ++i) | |
8408 | if (!INTEGERP (XVECTOR (tem)->contents[i])) | |
8409 | return 0; | |
8410 | } | |
8411 | else | |
8412 | return 0; | |
8413 | ||
8414 | return 1; | |
8415 | } | |
8416 | ||
8417 | ||
8418 | /* Load Ghostscript image IMG for use on frame F. Value is non-zero | |
8419 | if successful. */ | |
8420 | ||
8421 | static int | |
d3da34e0 | 8422 | gs_load (struct frame *f, struct image *img) |
4ef0d4d0 KS |
8423 | { |
8424 | char buffer[100]; | |
8425 | Lisp_Object window_and_pixmap_id = Qnil, loader, pt_height, pt_width; | |
4ef0d4d0 KS |
8426 | Lisp_Object frame; |
8427 | double in_width, in_height; | |
8428 | Lisp_Object pixel_colors = Qnil; | |
8429 | ||
8430 | /* Compute pixel size of pixmap needed from the given size in the | |
8431 | image specification. Sizes in the specification are in pt. 1 pt | |
8432 | = 1/72 in, xdpi and ydpi are stored in the frame's X display | |
8433 | info. */ | |
8434 | pt_width = image_spec_value (img->spec, QCpt_width, NULL); | |
7574650a | 8435 | in_width = INTEGERP (pt_width) ? XFASTINT (pt_width) / 72.0 : 0; |
4ef0d4d0 KS |
8436 | img->width = in_width * FRAME_X_DISPLAY_INFO (f)->resx; |
8437 | pt_height = image_spec_value (img->spec, QCpt_height, NULL); | |
7574650a | 8438 | in_height = INTEGERP (pt_height) ? XFASTINT (pt_height) / 72.0 : 0; |
4ef0d4d0 KS |
8439 | img->height = in_height * FRAME_X_DISPLAY_INFO (f)->resy; |
8440 | ||
f1f25b99 CY |
8441 | if (!check_image_size (f, img->width, img->height)) |
8442 | { | |
10ea2b82 | 8443 | image_error ("Invalid image size (see `max-image-size')", Qnil, Qnil); |
f1f25b99 CY |
8444 | return 0; |
8445 | } | |
8446 | ||
4ef0d4d0 KS |
8447 | /* Create the pixmap. */ |
8448 | xassert (img->pixmap == NO_PIXMAP); | |
8449 | ||
8450 | /* Only W32 version did BLOCK_INPUT here. ++kfs */ | |
8451 | BLOCK_INPUT; | |
8452 | img->pixmap = XCreatePixmap (FRAME_X_DISPLAY (f), FRAME_X_WINDOW (f), | |
8453 | img->width, img->height, | |
8454 | DefaultDepthOfScreen (FRAME_X_SCREEN (f))); | |
8455 | UNBLOCK_INPUT; | |
8456 | ||
8457 | if (!img->pixmap) | |
8458 | { | |
8459 | image_error ("Unable to create pixmap for `%s'", img->spec, Qnil); | |
8460 | return 0; | |
8461 | } | |
8462 | ||
8463 | /* Call the loader to fill the pixmap. It returns a process object | |
8464 | if successful. We do not record_unwind_protect here because | |
8465 | other places in redisplay like calling window scroll functions | |
8466 | don't either. Let the Lisp loader use `unwind-protect' instead. */ | |
4ef0d4d0 KS |
8467 | sprintf (buffer, "%lu %lu", |
8468 | (unsigned long) FRAME_X_WINDOW (f), | |
8469 | (unsigned long) img->pixmap); | |
8470 | window_and_pixmap_id = build_string (buffer); | |
8471 | ||
8472 | sprintf (buffer, "%lu %lu", | |
8473 | FRAME_FOREGROUND_PIXEL (f), | |
8474 | FRAME_BACKGROUND_PIXEL (f)); | |
8475 | pixel_colors = build_string (buffer); | |
8476 | ||
8477 | XSETFRAME (frame, f); | |
8478 | loader = image_spec_value (img->spec, QCloader, NULL); | |
8479 | if (NILP (loader)) | |
8480 | loader = intern ("gs-load-image"); | |
8481 | ||
8482 | img->data.lisp_val = call6 (loader, frame, img->spec, | |
8483 | make_number (img->width), | |
8484 | make_number (img->height), | |
8485 | window_and_pixmap_id, | |
8486 | pixel_colors); | |
4ef0d4d0 KS |
8487 | return PROCESSP (img->data.lisp_val); |
8488 | } | |
8489 | ||
8490 | ||
8491 | /* Kill the Ghostscript process that was started to fill PIXMAP on | |
8492 | frame F. Called from XTread_socket when receiving an event | |
8493 | telling Emacs that Ghostscript has finished drawing. */ | |
8494 | ||
8495 | void | |
d3da34e0 | 8496 | x_kill_gs_process (Pixmap pixmap, struct frame *f) |
4ef0d4d0 | 8497 | { |
354884c4 | 8498 | struct image_cache *c = FRAME_IMAGE_CACHE (f); |
4ef0d4d0 KS |
8499 | int class, i; |
8500 | struct image *img; | |
8501 | ||
8502 | /* Find the image containing PIXMAP. */ | |
8503 | for (i = 0; i < c->used; ++i) | |
8504 | if (c->images[i]->pixmap == pixmap) | |
8505 | break; | |
8506 | ||
8507 | /* Should someone in between have cleared the image cache, for | |
8508 | instance, give up. */ | |
8509 | if (i == c->used) | |
8510 | return; | |
8511 | ||
8512 | /* Kill the GS process. We should have found PIXMAP in the image | |
8513 | cache and its image should contain a process object. */ | |
8514 | img = c->images[i]; | |
8515 | xassert (PROCESSP (img->data.lisp_val)); | |
8516 | Fkill_process (img->data.lisp_val, Qnil); | |
8517 | img->data.lisp_val = Qnil; | |
8518 | ||
8519 | #if defined (HAVE_X_WINDOWS) | |
8520 | ||
8521 | /* On displays with a mutable colormap, figure out the colors | |
8522 | allocated for the image by looking at the pixels of an XImage for | |
8523 | img->pixmap. */ | |
8524 | class = FRAME_X_VISUAL (f)->class; | |
8525 | if (class != StaticColor && class != StaticGray && class != TrueColor) | |
8526 | { | |
8527 | XImagePtr ximg; | |
8528 | ||
8529 | BLOCK_INPUT; | |
8530 | ||
8531 | /* Try to get an XImage for img->pixmep. */ | |
8532 | ximg = XGetImage (FRAME_X_DISPLAY (f), img->pixmap, | |
8533 | 0, 0, img->width, img->height, ~0, ZPixmap); | |
8534 | if (ximg) | |
8535 | { | |
8536 | int x, y; | |
8537 | ||
8538 | /* Initialize the color table. */ | |
8539 | init_color_table (); | |
8540 | ||
8541 | /* For each pixel of the image, look its color up in the | |
8542 | color table. After having done so, the color table will | |
8543 | contain an entry for each color used by the image. */ | |
8544 | for (y = 0; y < img->height; ++y) | |
8545 | for (x = 0; x < img->width; ++x) | |
8546 | { | |
8547 | unsigned long pixel = XGetPixel (ximg, x, y); | |
8548 | lookup_pixel_color (f, pixel); | |
8549 | } | |
8550 | ||
8551 | /* Record colors in the image. Free color table and XImage. */ | |
8552 | #ifdef COLOR_TABLE_SUPPORT | |
8553 | img->colors = colors_in_color_table (&img->ncolors); | |
8554 | free_color_table (); | |
8555 | #endif | |
8556 | XDestroyImage (ximg); | |
8557 | ||
8558 | #if 0 /* This doesn't seem to be the case. If we free the colors | |
8559 | here, we get a BadAccess later in x_clear_image when | |
8560 | freeing the colors. */ | |
8561 | /* We have allocated colors once, but Ghostscript has also | |
8562 | allocated colors on behalf of us. So, to get the | |
8563 | reference counts right, free them once. */ | |
8564 | if (img->ncolors) | |
8565 | x_free_colors (f, img->colors, img->ncolors); | |
8566 | #endif | |
8567 | } | |
8568 | else | |
8569 | image_error ("Cannot get X image of `%s'; colors will not be freed", | |
8570 | img->spec, Qnil); | |
8571 | ||
8572 | UNBLOCK_INPUT; | |
8573 | } | |
8574 | #endif /* HAVE_X_WINDOWS */ | |
8575 | ||
8576 | /* Now that we have the pixmap, compute mask and transform the | |
8577 | image if requested. */ | |
8578 | BLOCK_INPUT; | |
8579 | postprocess_image (f, img); | |
8580 | UNBLOCK_INPUT; | |
8581 | } | |
8582 | ||
8583 | #endif /* HAVE_GHOSTSCRIPT */ | |
8584 | ||
8585 | \f | |
8586 | /*********************************************************************** | |
8587 | Tests | |
b0c396f7 | 8588 | ***********************************************************************/ |
4ef0d4d0 KS |
8589 | |
8590 | #if GLYPH_DEBUG | |
8591 | ||
8592 | DEFUN ("imagep", Fimagep, Simagep, 1, 1, 0, | |
8593 | doc: /* Value is non-nil if SPEC is a valid image specification. */) | |
5842a27b | 8594 | (Lisp_Object spec) |
4ef0d4d0 KS |
8595 | { |
8596 | return valid_image_p (spec) ? Qt : Qnil; | |
8597 | } | |
8598 | ||
8599 | ||
8600 | DEFUN ("lookup-image", Flookup_image, Slookup_image, 1, 1, 0, "") | |
5842a27b | 8601 | (Lisp_Object spec) |
4ef0d4d0 KS |
8602 | { |
8603 | int id = -1; | |
8604 | ||
8605 | if (valid_image_p (spec)) | |
8606 | id = lookup_image (SELECTED_FRAME (), spec); | |
8607 | ||
8608 | debug_print (spec); | |
8609 | return make_number (id); | |
8610 | } | |
8611 | ||
8612 | #endif /* GLYPH_DEBUG != 0 */ | |
8613 | ||
8614 | ||
8615 | /*********************************************************************** | |
8616 | Initialization | |
b0c396f7 | 8617 | ***********************************************************************/ |
4ef0d4d0 | 8618 | |
0855eb52 JB |
8619 | #ifdef HAVE_NTGUI |
8620 | /* Image types that rely on external libraries are loaded dynamically | |
8621 | if the library is available. */ | |
adac86db | 8622 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
0855eb52 JB |
8623 | define_image_type (image_type, init_lib_fn (libraries)) |
8624 | #else | |
adac86db | 8625 | #define CHECK_LIB_AVAILABLE(image_type, init_lib_fn, libraries) \ |
e0e30823 | 8626 | define_image_type (image_type, 1) |
0855eb52 JB |
8627 | #endif /* HAVE_NTGUI */ |
8628 | ||
8629 | DEFUN ("init-image-library", Finit_image_library, Sinit_image_library, 2, 2, 0, | |
8630 | doc: /* Initialize image library implementing image type TYPE. | |
b0c396f7 | 8631 | Return non-nil if TYPE is a supported image type. |
0855eb52 JB |
8632 | |
8633 | Image types pbm and xbm are prebuilt; other types are loaded here. | |
8634 | Libraries to load are specified in alist LIBRARIES (usually, the value | |
2e288d54 | 8635 | of `dynamic-library-alist', which see). */) |
5842a27b | 8636 | (Lisp_Object type, Lisp_Object libraries) |
0855eb52 JB |
8637 | { |
8638 | Lisp_Object tested; | |
8639 | ||
8640 | /* Don't try to reload the library. */ | |
8641 | tested = Fassq (type, Vimage_type_cache); | |
8642 | if (CONSP (tested)) | |
8643 | return XCDR (tested); | |
8644 | ||
9e2a2647 | 8645 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
0855eb52 | 8646 | if (EQ (type, Qxpm)) |
adac86db | 8647 | return CHECK_LIB_AVAILABLE (&xpm_type, init_xpm_functions, libraries); |
0855eb52 JB |
8648 | #endif |
8649 | ||
9e2a2647 | 8650 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
0855eb52 | 8651 | if (EQ (type, Qjpeg)) |
adac86db | 8652 | return CHECK_LIB_AVAILABLE (&jpeg_type, init_jpeg_functions, libraries); |
0855eb52 JB |
8653 | #endif |
8654 | ||
9e2a2647 | 8655 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
0855eb52 | 8656 | if (EQ (type, Qtiff)) |
adac86db | 8657 | return CHECK_LIB_AVAILABLE (&tiff_type, init_tiff_functions, libraries); |
0855eb52 JB |
8658 | #endif |
8659 | ||
9e2a2647 | 8660 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
0855eb52 | 8661 | if (EQ (type, Qgif)) |
adac86db | 8662 | return CHECK_LIB_AVAILABLE (&gif_type, init_gif_functions, libraries); |
0855eb52 JB |
8663 | #endif |
8664 | ||
9e2a2647 | 8665 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
0855eb52 | 8666 | if (EQ (type, Qpng)) |
adac86db | 8667 | return CHECK_LIB_AVAILABLE (&png_type, init_png_functions, libraries); |
0855eb52 JB |
8668 | #endif |
8669 | ||
4ab27a43 GM |
8670 | #if defined (HAVE_RSVG) |
8671 | if (EQ (type, Qsvg)) | |
8672 | return CHECK_LIB_AVAILABLE (&svg_type, init_svg_functions, libraries); | |
8673 | #endif | |
c21e6151 | 8674 | |
3de25479 | 8675 | #if defined (HAVE_IMAGEMAGICK) |
7574650a AS |
8676 | if (EQ (type, Qimagemagick)) |
8677 | { | |
7574650a AS |
8678 | return CHECK_LIB_AVAILABLE (&imagemagick_type, init_imagemagick_functions, |
8679 | libraries); | |
8680 | } | |
3de25479 JV |
8681 | #endif |
8682 | ||
0855eb52 JB |
8683 | #ifdef HAVE_GHOSTSCRIPT |
8684 | if (EQ (type, Qpostscript)) | |
adac86db | 8685 | return CHECK_LIB_AVAILABLE (&gs_type, init_gs_functions, libraries); |
0855eb52 JB |
8686 | #endif |
8687 | ||
8688 | /* If the type is not recognized, avoid testing it ever again. */ | |
adac86db | 8689 | CACHE_IMAGE_TYPE (type, Qnil); |
0855eb52 JB |
8690 | return Qnil; |
8691 | } | |
8692 | ||
4ef0d4d0 | 8693 | void |
d3da34e0 | 8694 | syms_of_image (void) |
4ef0d4d0 | 8695 | { |
6e6fc3fd RS |
8696 | /* Initialize this only once, since that's what we do with Vimage_types |
8697 | and they are supposed to be in sync. Initializing here gives correct | |
8698 | operation on GNU/Linux of calling dump-emacs after loading some images. */ | |
8699 | image_types = NULL; | |
8700 | ||
0855eb52 JB |
8701 | /* Must be defined now becase we're going to update it below, while |
8702 | defining the supported image types. */ | |
29208e82 | 8703 | DEFVAR_LISP ("image-types", Vimage_types, |
b0c396f7 JV |
8704 | doc: /* List of potentially supported image types. |
8705 | Each element of the list is a symbol for an image type, like 'jpeg or 'png. | |
8706 | To check whether it is really supported, use `image-type-available-p'. */); | |
0855eb52 JB |
8707 | Vimage_types = Qnil; |
8708 | ||
29208e82 | 8709 | DEFVAR_LISP ("max-image-size", Vmax_image_size, |
b0c396f7 JV |
8710 | doc: /* Maximum size of images. |
8711 | Emacs will not load an image into memory if its pixel width or | |
8712 | pixel height exceeds this limit. | |
8713 | ||
8714 | If the value is an integer, it directly specifies the maximum | |
8715 | image height and width, measured in pixels. If it is a floating | |
8716 | point number, it specifies the maximum image height and width | |
8717 | as a ratio to the frame height and width. If the value is | |
8718 | non-numeric, there is no explicit limit on the size of images. */); | |
f1f25b99 CY |
8719 | Vmax_image_size = make_float (MAX_IMAGE_SIZE); |
8720 | ||
0855eb52 JB |
8721 | Vimage_type_cache = Qnil; |
8722 | staticpro (&Vimage_type_cache); | |
8723 | ||
d67b4f80 | 8724 | Qpbm = intern_c_string ("pbm"); |
7c4e3a32 | 8725 | staticpro (&Qpbm); |
5fc9fdeb | 8726 | ADD_IMAGE_TYPE (Qpbm); |
7c4e3a32 | 8727 | |
d67b4f80 | 8728 | Qxbm = intern_c_string ("xbm"); |
7c4e3a32 | 8729 | staticpro (&Qxbm); |
5fc9fdeb | 8730 | ADD_IMAGE_TYPE (Qxbm); |
7c4e3a32 RS |
8731 | |
8732 | define_image_type (&xbm_type, 1); | |
8733 | define_image_type (&pbm_type, 1); | |
8734 | ||
d67b4f80 | 8735 | Qcount = intern_c_string ("count"); |
e047f448 | 8736 | staticpro (&Qcount); |
1546c559 JL |
8737 | Qextension_data = intern_c_string ("extension-data"); |
8738 | staticpro (&Qextension_data); | |
e047f448 | 8739 | |
d67b4f80 | 8740 | QCascent = intern_c_string (":ascent"); |
4ef0d4d0 | 8741 | staticpro (&QCascent); |
d67b4f80 | 8742 | QCmargin = intern_c_string (":margin"); |
4ef0d4d0 | 8743 | staticpro (&QCmargin); |
d67b4f80 | 8744 | QCrelief = intern_c_string (":relief"); |
4ef0d4d0 | 8745 | staticpro (&QCrelief); |
d67b4f80 | 8746 | QCconversion = intern_c_string (":conversion"); |
4ef0d4d0 | 8747 | staticpro (&QCconversion); |
d67b4f80 | 8748 | QCcolor_symbols = intern_c_string (":color-symbols"); |
4ef0d4d0 | 8749 | staticpro (&QCcolor_symbols); |
d67b4f80 | 8750 | QCheuristic_mask = intern_c_string (":heuristic-mask"); |
4ef0d4d0 | 8751 | staticpro (&QCheuristic_mask); |
d67b4f80 | 8752 | QCindex = intern_c_string (":index"); |
4ef0d4d0 | 8753 | staticpro (&QCindex); |
088dcc3e | 8754 | QCgeometry = intern_c_string (":geometry"); |
3de25479 | 8755 | staticpro (&QCgeometry); |
088dcc3e | 8756 | QCcrop = intern_c_string (":crop"); |
3de25479 | 8757 | staticpro (&QCcrop); |
088dcc3e | 8758 | QCrotation = intern_c_string (":rotation"); |
3de25479 | 8759 | staticpro (&QCrotation); |
d67b4f80 | 8760 | QCmatrix = intern_c_string (":matrix"); |
4ef0d4d0 | 8761 | staticpro (&QCmatrix); |
d67b4f80 | 8762 | QCcolor_adjustment = intern_c_string (":color-adjustment"); |
4ef0d4d0 | 8763 | staticpro (&QCcolor_adjustment); |
d67b4f80 | 8764 | QCmask = intern_c_string (":mask"); |
4ef0d4d0 KS |
8765 | staticpro (&QCmask); |
8766 | ||
d67b4f80 | 8767 | Qlaplace = intern_c_string ("laplace"); |
4ef0d4d0 | 8768 | staticpro (&Qlaplace); |
d67b4f80 | 8769 | Qemboss = intern_c_string ("emboss"); |
4ef0d4d0 | 8770 | staticpro (&Qemboss); |
d67b4f80 | 8771 | Qedge_detection = intern_c_string ("edge-detection"); |
4ef0d4d0 | 8772 | staticpro (&Qedge_detection); |
d67b4f80 | 8773 | Qheuristic = intern_c_string ("heuristic"); |
4ef0d4d0 | 8774 | staticpro (&Qheuristic); |
4ef0d4d0 | 8775 | |
d67b4f80 | 8776 | Qpostscript = intern_c_string ("postscript"); |
4ef0d4d0 KS |
8777 | staticpro (&Qpostscript); |
8778 | #ifdef HAVE_GHOSTSCRIPT | |
5fc9fdeb | 8779 | ADD_IMAGE_TYPE (Qpostscript); |
d67b4f80 | 8780 | QCloader = intern_c_string (":loader"); |
4ef0d4d0 | 8781 | staticpro (&QCloader); |
d67b4f80 | 8782 | QCbounding_box = intern_c_string (":bounding-box"); |
4ef0d4d0 | 8783 | staticpro (&QCbounding_box); |
d67b4f80 | 8784 | QCpt_width = intern_c_string (":pt-width"); |
4ef0d4d0 | 8785 | staticpro (&QCpt_width); |
d67b4f80 | 8786 | QCpt_height = intern_c_string (":pt-height"); |
4ef0d4d0 KS |
8787 | staticpro (&QCpt_height); |
8788 | #endif /* HAVE_GHOSTSCRIPT */ | |
8789 | ||
5be1c984 EZ |
8790 | #ifdef HAVE_NTGUI |
8791 | Qlibpng_version = intern_c_string ("libpng-version"); | |
8792 | staticpro (&Qlibpng_version); | |
0514b4be | 8793 | Fset (Qlibpng_version, |
5be1c984 | 8794 | #if HAVE_PNG |
0514b4be | 8795 | make_number (PNG_LIBPNG_VER) |
5be1c984 | 8796 | #else |
0514b4be | 8797 | make_number (-1) |
5be1c984 | 8798 | #endif |
0514b4be | 8799 | ); |
5be1c984 EZ |
8800 | #endif |
8801 | ||
9e2a2647 | 8802 | #if defined (HAVE_XPM) || defined (HAVE_NS) |
d67b4f80 | 8803 | Qxpm = intern_c_string ("xpm"); |
4ef0d4d0 | 8804 | staticpro (&Qxpm); |
5fc9fdeb | 8805 | ADD_IMAGE_TYPE (Qxpm); |
4ef0d4d0 KS |
8806 | #endif |
8807 | ||
9e2a2647 | 8808 | #if defined (HAVE_JPEG) || defined (HAVE_NS) |
d67b4f80 | 8809 | Qjpeg = intern_c_string ("jpeg"); |
4ef0d4d0 | 8810 | staticpro (&Qjpeg); |
5fc9fdeb | 8811 | ADD_IMAGE_TYPE (Qjpeg); |
4ef0d4d0 KS |
8812 | #endif |
8813 | ||
9e2a2647 | 8814 | #if defined (HAVE_TIFF) || defined (HAVE_NS) |
d67b4f80 | 8815 | Qtiff = intern_c_string ("tiff"); |
4ef0d4d0 | 8816 | staticpro (&Qtiff); |
5fc9fdeb | 8817 | ADD_IMAGE_TYPE (Qtiff); |
4ef0d4d0 KS |
8818 | #endif |
8819 | ||
9e2a2647 | 8820 | #if defined (HAVE_GIF) || defined (HAVE_NS) |
d67b4f80 | 8821 | Qgif = intern_c_string ("gif"); |
4ef0d4d0 | 8822 | staticpro (&Qgif); |
5fc9fdeb | 8823 | ADD_IMAGE_TYPE (Qgif); |
4ef0d4d0 KS |
8824 | #endif |
8825 | ||
9e2a2647 | 8826 | #if defined (HAVE_PNG) || defined (HAVE_NS) |
d67b4f80 | 8827 | Qpng = intern_c_string ("png"); |
4ef0d4d0 | 8828 | staticpro (&Qpng); |
5fc9fdeb | 8829 | ADD_IMAGE_TYPE (Qpng); |
4ef0d4d0 KS |
8830 | #endif |
8831 | ||
3de25479 | 8832 | #if defined (HAVE_IMAGEMAGICK) |
088dcc3e | 8833 | Qimagemagick = intern_c_string ("imagemagick"); |
3de25479 JV |
8834 | staticpro (&Qimagemagick); |
8835 | ADD_IMAGE_TYPE (Qimagemagick); | |
8836 | #endif | |
7574650a | 8837 | |
4ab27a43 | 8838 | #if defined (HAVE_RSVG) |
d67b4f80 | 8839 | Qsvg = intern_c_string ("svg"); |
4ab27a43 | 8840 | staticpro (&Qsvg); |
5fc9fdeb JR |
8841 | ADD_IMAGE_TYPE (Qsvg); |
8842 | #ifdef HAVE_NTGUI | |
df23bf08 | 8843 | /* Other libraries used directly by svg code. */ |
d67b4f80 | 8844 | Qgdk_pixbuf = intern_c_string ("gdk-pixbuf"); |
5fc9fdeb | 8845 | staticpro (&Qgdk_pixbuf); |
d67b4f80 | 8846 | Qglib = intern_c_string ("glib"); |
5fc9fdeb | 8847 | staticpro (&Qglib); |
d67b4f80 | 8848 | Qgobject = intern_c_string ("gobject"); |
df23bf08 | 8849 | staticpro (&Qgobject); |
5fc9fdeb JR |
8850 | #endif /* HAVE_NTGUI */ |
8851 | #endif /* HAVE_RSVG */ | |
4ab27a43 | 8852 | |
0855eb52 | 8853 | defsubr (&Sinit_image_library); |
7574650a | 8854 | #ifdef HAVE_IMAGEMAGICK |
3de25479 | 8855 | defsubr (&Simagemagick_types); |
7574650a | 8856 | #endif |
4ef0d4d0 | 8857 | defsubr (&Sclear_image_cache); |
110683ad | 8858 | defsubr (&Simage_flush); |
4ef0d4d0 KS |
8859 | defsubr (&Simage_size); |
8860 | defsubr (&Simage_mask_p); | |
1546c559 | 8861 | defsubr (&Simage_metadata); |
4ef0d4d0 KS |
8862 | |
8863 | #if GLYPH_DEBUG | |
8864 | defsubr (&Simagep); | |
8865 | defsubr (&Slookup_image); | |
8866 | #endif | |
8867 | ||
29208e82 | 8868 | DEFVAR_BOOL ("cross-disabled-images", cross_disabled_images, |
b0c396f7 JV |
8869 | doc: /* Non-nil means always draw a cross over disabled images. |
8870 | Disabled images are those having a `:conversion disabled' property. | |
8871 | A cross is always drawn on black & white displays. */); | |
4ef0d4d0 KS |
8872 | cross_disabled_images = 0; |
8873 | ||
29208e82 | 8874 | DEFVAR_LISP ("x-bitmap-file-path", Vx_bitmap_file_path, |
b0c396f7 | 8875 | doc: /* List of directories to search for window system bitmap files. */); |
4ef0d4d0 KS |
8876 | Vx_bitmap_file_path = decode_env_path ((char *) 0, PATH_BITMAPS); |
8877 | ||
29208e82 | 8878 | DEFVAR_LISP ("image-cache-eviction-delay", Vimage_cache_eviction_delay, |
b0c396f7 JV |
8879 | doc: /* Maximum time after which images are removed from the cache. |
8880 | When an image has not been displayed this many seconds, Emacs | |
8881 | automatically removes it from the image cache. If the cache contains | |
8882 | a large number of images, the actual eviction time may be shorter. | |
8883 | The value can also be nil, meaning the cache is never cleared. | |
8884 | ||
8885 | The function `clear-image-cache' disregards this variable. */); | |
98fe5161 | 8886 | Vimage_cache_eviction_delay = make_number (300); |
7574650a | 8887 | #ifdef HAVE_IMAGEMAGICK |
29208e82 | 8888 | DEFVAR_LISP ("imagemagick-render-type", Vimagemagick_render_type, |
4917006b | 8889 | doc: /* Choose between ImageMagick render methods. */); |
7574650a | 8890 | #endif |
4ef0d4d0 | 8891 | |
4917006b JV |
8892 | } |
8893 | ||
4ef0d4d0 | 8894 | void |
d3da34e0 | 8895 | init_image (void) |
4ef0d4d0 | 8896 | { |
4ef0d4d0 | 8897 | } |