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nsxivimage.c

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1/* Copyright 2011, 2012 Bert Muennich
2 *
3 * This file is part of sxiv.
4 *
5 * sxiv is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published
7 * by the Free Software Foundation; either version 2 of the License,
8 * or (at your option) any later version.
9 *
10 * sxiv is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with sxiv. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#define _POSIX_C_SOURCE 200112L
20#define _IMAGE_CONFIG
21#define _RENDER_CONFIG
22
23#include <stdlib.h>
24#include <string.h>
25#include <sys/types.h>
26#include <unistd.h>
27
28#if HAVE_GIFLIB
29#include <gif_lib.h>
30enum { MIN_GIF_DELAY = 25 };
31#endif
32
33#include "exif.h"
34#include "image.h"
35#include "options.h"
36#include "util.h"
37#include "config.h"
38
39float zoom_min;
40float zoom_max;
41
42static int zoomdiff(float z1, float z2)
43{
44 return (int) (z1 * 1000.0 - z2 * 1000.0);
45}
46
47static void img_apply_gamma(img_t *img)
48{
49 if (img == NULL || img->im == NULL || img->cmod == NULL)
50 return;
51
52 if (img->gamma == 0) {
53 imlib_context_set_color_modifier(NULL);
54 } else {
55 double range = img->gamma <= 0 ? 1.0 : GAMMA_MAX - 1.0;
56
57 imlib_context_set_color_modifier(img->cmod);
58 imlib_reset_color_modifier();
59 imlib_modify_color_modifier_gamma(1.0 + img->gamma * (range / GAMMA_RANGE));
60 }
61}
62
63void img_init(img_t *img, win_t *win)
64{
65 zoom_min = zoom_levels[0] / 100.0;
66 zoom_max = zoom_levels[ARRLEN(zoom_levels) - 1] / 100.0;
67
68 if (img == NULL || win == NULL)
69 return;
70
71 imlib_context_set_display(win->env.dpy);
72 imlib_context_set_visual(win->env.vis);
73 imlib_context_set_colormap(win->env.cmap);
74
75 img->im = NULL;
76 img->win = win;
77 img->zoom = options->zoom;
78 img->zoom = MAX(img->zoom, zoom_min);
79 img->zoom = MIN(img->zoom, zoom_max);
80 img->checkpan = false;
81 img->dirty = false;
82 img->aa = RENDER_ANTI_ALIAS;
83 img->alpha = !RENDER_WHITE_ALPHA;
84 img->multi.cap = img->multi.cnt = 0;
85 img->multi.animate = false;
86 img->multi.length = img->multi.repeat = 0;
87
88 img->cmod = imlib_create_color_modifier();
89 img->gamma = MIN(MAX(options->gamma, -GAMMA_RANGE), GAMMA_RANGE);
90
91 img->ss.on = options->slideshow > 0;
92 img->ss.delay = options->slideshow > 0 ? options->slideshow : SLIDESHOW_DELAY;
93}
94
95void exif_auto_orientate(const fileinfo_t *file)
96{
97 switch (exif_orientation(file)) {
98 case 5:
99 imlib_image_orientate(1);
100 case 2:
101 imlib_image_flip_vertical();
102 break;
103
104 case 3:
105 imlib_image_orientate(2);
106 break;
107
108 case 7:
109 imlib_image_orientate(1);
110 case 4:
111 imlib_image_flip_horizontal();
112 break;
113
114 case 6:
115 imlib_image_orientate(1);
116 break;
117
118 case 8:
119 imlib_image_orientate(3);
120 break;
121 }
122}
123
124#if HAVE_GIFLIB
125bool img_load_gif(img_t *img, const fileinfo_t *file)
126{
127 GifFileType *gif;
128 GifRowType *rows = NULL;
129 GifRecordType rec;
130 ColorMapObject *cmap;
131 DATA32 bgpixel, *data, *ptr;
132 DATA32 *prev_frame = NULL;
133 Imlib_Image im;
134 int i, j, bg, r, g, b;
135 int x, y, w, h, sw, sh;
136 int px, py, pw, ph;
137 int intoffset[] = { 0, 4, 2, 1 };
138 int intjump[] = { 8, 8, 4, 2 };
139 int transp = -1;
140 unsigned int disposal = 0, prev_disposal = 0;
141 unsigned int delay = 0;
142 bool err = false;
143
144 if (img->multi.cap == 0) {
145 img->multi.cap = 8;
146 img->multi.frames = (img_frame_t*)
147 s_malloc(sizeof(img_frame_t) * img->multi.cap);
148 }
149 img->multi.cnt = img->multi.sel = 0;
150 img->multi.length = img->multi.repeat = 0;
151
152#if defined(GIFLIB_MAJOR) && GIFLIB_MAJOR >= 5
153 gif = DGifOpenFileName(file->path, NULL);
154#else
155 gif = DGifOpenFileName(file->path);
156#endif
157 if (gif == NULL) {
158 warn("could not open gif file: %s", file->name);
159 return false;
160 }
161 bg = gif->SBackGroundColor;
162 sw = gif->SWidth;
163 sh = gif->SHeight;
164 px = py = pw = ph = 0;
165
166 do {
167 if (DGifGetRecordType(gif, &rec) == GIF_ERROR) {
168 err = true;
169 break;
170 }
171 if (rec == EXTENSION_RECORD_TYPE) {
172 int ext_code;
173 GifByteType *ext = NULL;
174
175 DGifGetExtension(gif, &ext_code, &ext);
176 while (ext) {
177 if (ext_code == GRAPHICS_EXT_FUNC_CODE) {
178 if (ext[1] & 1)
179 transp = (int) ext[4];
180 else
181 transp = -1;
182
183 delay = 10 * ((unsigned int) ext[3] << 8 | (unsigned int) ext[2]);
184 if (delay)
185 delay = MAX(delay, MIN_GIF_DELAY);
186
187 disposal = (unsigned int) ext[1] >> 2 & 0x7;
188 } else if (ext_code == APPLICATION_EXT_FUNC_CODE) {
189 if (ext[0] == 11 && memcmp(ext+1, "NETSCAPE2.0", 11) == 0) {
190 DGifGetExtensionNext(gif, &ext);
191 if (ext && ext[0] == 3 && ext[1] == 1)
192 img->multi.repeat = ((int) ext[3] << 8 | (int) ext[2]) - 1;
193 }
194 }
195 ext = NULL;
196 DGifGetExtensionNext(gif, &ext);
197 }
198 } else if (rec == IMAGE_DESC_RECORD_TYPE) {
199 if (DGifGetImageDesc(gif) == GIF_ERROR) {
200 err = true;
201 break;
202 }
203 x = gif->Image.Left;
204 y = gif->Image.Top;
205 w = gif->Image.Width;
206 h = gif->Image.Height;
207
208 rows = (GifRowType*) s_malloc(h * sizeof(GifRowType));
209 for (i = 0; i < h; i++)
210 rows[i] = (GifRowType) s_malloc(w * sizeof(GifPixelType));
211 if (gif->Image.Interlace) {
212 for (i = 0; i < 4; i++) {
213 for (j = intoffset[i]; j < h; j += intjump[i])
214 DGifGetLine(gif, rows[j], w);
215 }
216 } else {
217 for (i = 0; i < h; i++)
218 DGifGetLine(gif, rows[i], w);
219 }
220
221 ptr = data = (DATA32*) s_malloc(sizeof(DATA32) * sw * sh);
222 cmap = gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap;
223 r = cmap->Colors[bg].Red;
224 g = cmap->Colors[bg].Green;
225 b = cmap->Colors[bg].Blue;
226 bgpixel = 0x00ffffff & (r << 16 | g << 8 | b);
227
228 for (i = 0; i < sh; i++) {
229 for (j = 0; j < sw; j++) {
230 if (i < y || i >= y + h || j < x || j >= x + w ||
231 rows[i-y][j-x] == transp)
232 {
233 if (prev_frame != NULL && (prev_disposal != 2 ||
234 i < py || i >= py + ph || j < px || j >= px + pw))
235 {
236 *ptr = prev_frame[i * sw + j];
237 } else {
238 *ptr = bgpixel;
239 }
240 } else {
241 r = cmap->Colors[rows[i-y][j-x]].Red;
242 g = cmap->Colors[rows[i-y][j-x]].Green;
243 b = cmap->Colors[rows[i-y][j-x]].Blue;
244 *ptr = 0xff << 24 | r << 16 | g << 8 | b;
245 }
246 ptr++;
247 }
248 }
249
250 im = imlib_create_image_using_copied_data(sw, sh, data);
251
252 for (i = 0; i < h; i++)
253 free(rows[i]);
254 free(rows);
255 free(data);
256
257 if (im == NULL) {
258 err = true;
259 break;
260 }
261
262 imlib_context_set_image(im);
263 imlib_image_set_format("gif");
264 if (transp >= 0)
265 imlib_image_set_has_alpha(1);
266
267 if (disposal != 3)
268 prev_frame = imlib_image_get_data_for_reading_only();
269 prev_disposal = disposal;
270 px = x, py = y, pw = w, ph = h;
271
272 if (img->multi.cnt == img->multi.cap) {
273 img->multi.cap *= 2;
274 img->multi.frames = (img_frame_t*)
275 s_realloc(img->multi.frames,
276 img->multi.cap * sizeof(img_frame_t));
277 }
278 img->multi.frames[img->multi.cnt].im = im;
279 img->multi.frames[img->multi.cnt].delay = delay ? delay : GIF_DELAY;
280 img->multi.length += img->multi.frames[img->multi.cnt].delay;
281 img->multi.cnt++;
282 }
283 } while (rec != TERMINATE_RECORD_TYPE);
284
285 DGifCloseFile(gif);
286
287 if (err && !file->loaded)
288 warn("corrupted gif file: %s", file->name);
289
290 if (img->multi.cnt > 1) {
291 imlib_context_set_image(img->im);
292 imlib_free_image();
293 img->im = img->multi.frames[0].im;
294 img->multi.animate = GIF_AUTOPLAY;
295 } else if (img->multi.cnt == 1) {
296 imlib_context_set_image(img->multi.frames[0].im);
297 imlib_free_image();
298 img->multi.cnt = 0;
299 img->multi.animate = false;
300 }
301
302 imlib_context_set_image(img->im);
303
304 return !err;
305}
306#endif /* HAVE_GIFLIB */
307
308bool img_load(img_t *img, const fileinfo_t *file)
309{
310 const char *fmt;
311
312 if (img == NULL || file == NULL || file->name == NULL || file->path == NULL)
313 return false;
314
315 if (access(file->path, R_OK) < 0 ||
316 (img->im = imlib_load_image(file->path)) == NULL)
317 {
318 warn("could not open image: %s", file->name);
319 return false;
320 }
321
322 imlib_context_set_image(img->im);
323 imlib_image_set_changes_on_disk();
324
325 if ((fmt = imlib_image_format()) == NULL) {
326 warn("could not open image: %s", file->name);
327 return false;
328 }
329 if (STREQ(fmt, "jpeg"))
330 exif_auto_orientate(file);
331#if HAVE_GIFLIB
332 if (STREQ(fmt, "gif"))
333 img_load_gif(img, file);
334#endif
335
336 img_apply_gamma(img);
337
338 img->w = imlib_image_get_width();
339 img->h = imlib_image_get_height();
340 img->flip = FLIP_NONE;
341 img->rotation = DEGREE_0;
342 img->scalemode = options->scalemode;
343 img->re = false;
344 img->checkpan = false;
345 img->dirty = true;
346
347 return true;
348}
349
350void img_close(img_t *img, bool decache)
351{
352 int i;
353
354 if (img == NULL)
355 return;
356
357 if (img->multi.cnt > 0) {
358 for (i = 0; i < img->multi.cnt; i++) {
359 imlib_context_set_image(img->multi.frames[i].im);
360 imlib_free_image();
361 }
362 img->multi.cnt = 0;
363 img->im = NULL;
364 } else if (img->im != NULL) {
365 imlib_context_set_image(img->im);
366 if (decache)
367 imlib_free_image_and_decache();
368 else
369 imlib_free_image();
370 img->im = NULL;
371 }
372
373 if (img->cmod)
374 imlib_context_set_color_modifier(NULL);
375}
376
377void img_check_pan(img_t *img, bool moved)
378{
379 win_t *win;
380 int ox, oy;
381
382 if (img == NULL || img->im == NULL || img->win == NULL)
383 return;
384
385 win = img->win;
386 ox = img->x;
387 oy = img->y;
388
389 if (img->w * img->zoom > win->w) {
390 if (img->x > 0 && img->x + img->w * img->zoom > win->w)
391 img->x = 0;
392 if (img->x < 0 && img->x + img->w * img->zoom < win->w)
393 img->x = win->w - img->w * img->zoom;
394 } else {
395 img->x = (win->w - img->w * img->zoom) / 2;
396 }
397 if (img->h * img->zoom > win->h) {
398 if (img->y > 0 && img->y + img->h * img->zoom > win->h)
399 img->y = 0;
400 if (img->y < 0 && img->y + img->h * img->zoom < win->h)
401 img->y = win->h - img->h * img->zoom;
402 } else {
403 img->y = (win->h - img->h * img->zoom) / 2;
404 }
405
406 if (!moved && (ox != img->x || oy != img->y))
407 img->dirty = true;
408}
409
410bool img_fit(img_t *img)
411{
412 float z, zmax, zw, zh;
413
414 if (img == NULL || img->im == NULL || img->win == NULL)
415 return false;
416 if (img->scalemode == SCALE_ZOOM)
417 return false;
418
419 zmax = img->scalemode == SCALE_DOWN ? 1.0 : zoom_max;
420 zw = (float) img->win->w / (float) img->w;
421 zh = (float) img->win->h / (float) img->h;
422
423 switch (img->scalemode) {
424 case SCALE_WIDTH:
425 z = zw;
426 break;
427 case SCALE_HEIGHT:
428 z = zh;
429 break;
430 default:
431 z = MIN(zw, zh);
432 break;
433 }
434
435 z = MAX(z, zoom_min);
436 z = MIN(z, zmax);
437
438 if (zoomdiff(z, img->zoom) != 0) {
439 img->zoom = z;
440 img->dirty = true;
441 return true;
442 } else {
443 return false;
444 }
445}
446
447void img_render(img_t *img)
448{
449 win_t *win;
450 int sx, sy, sw, sh;
451 int dx, dy, dw, dh;
452
453 if (img == NULL || img->im == NULL || img->win == NULL)
454 return;
455
456 win = img->win;
457 img_fit(img);
458
459 if (!img->re) {
460 /* rendered for the first time */
461 img->re = true;
462 if (img->zoom * img->w <= win->w)
463 img->x = (win->w - img->w * img->zoom) / 2;
464 else
465 img->x = 0;
466 if (img->zoom * img->h <= win->h)
467 img->y = (win->h - img->h * img->zoom) / 2;
468 else
469 img->y = 0;
470 }
471
472 if (img->checkpan) {
473 img_check_pan(img, false);
474 img->checkpan = false;
475 }
476
477 if (!img->dirty)
478 return;
479
480 /* calculate source and destination offsets */
481 if (img->x < 0) {
482 sx = -img->x / img->zoom;
483 sw = win->w / img->zoom;
484 dx = 0;
485 dw = win->w;
486 } else {
487 sx = 0;
488 sw = img->w;
489 dx = img->x;
490 dw = img->w * img->zoom;
491 }
492 if (img->y < 0) {
493 sy = -img->y / img->zoom;
494 sh = win->h / img->zoom;
495 dy = 0;
496 dh = win->h;
497 } else {
498 sy = 0;
499 sh = img->h;
500 dy = img->y;
501 dh = img->h * img->zoom;
502 }
503
504 win_clear(win);
505
506 imlib_context_set_image(img->im);
507 imlib_context_set_anti_alias(img->aa);
508
509 if (!img->alpha && imlib_image_has_alpha())
510 win_draw_rect(win, win->pm, dx, dy, dw, dh, True, 0, win->white);
511
512 imlib_context_set_drawable(win->pm);
513 imlib_render_image_part_on_drawable_at_size(sx, sy, sw, sh, dx, dy, dw, dh);
514
515 img->dirty = false;
516}
517
518bool img_fit_win(img_t *img, scalemode_t sm)
519{
520 if (img == NULL || img->im == NULL)
521 return false;
522
523 img->scalemode = sm;
524 return img_fit(img);
525}
526
527bool img_center(img_t *img)
528{
529 int ox, oy;
530
531 if (img == NULL || img->im == NULL || img->win == NULL)
532 return false;
533
534 ox = img->x;
535 oy = img->y;
536
537 img->x = (img->win->w - img->w * img->zoom) / 2;
538 img->y = (img->win->h - img->h * img->zoom) / 2;
539
540 if (ox != img->x || oy != img->y) {
541 img->dirty = true;
542 return true;
543 } else {
544 return false;
545 }
546}
547
548bool img_zoom(img_t *img, float z)
549{
550 if (img == NULL || img->im == NULL || img->win == NULL)
551 return false;
552
553 z = MAX(z, zoom_min);
554 z = MIN(z, zoom_max);
555
556 img->scalemode = SCALE_ZOOM;
557
558 if (zoomdiff(z, img->zoom) != 0) {
559 img->x = img->win->w / 2 - (img->win->w / 2 - img->x) * z / img->zoom;
560 img->y = img->win->h / 2 - (img->win->h / 2 - img->y) * z / img->zoom;
561 img->zoom = z;
562 img->checkpan = true;
563 img->dirty = true;
564 return true;
565 } else {
566 return false;
567 }
568}
569
570bool img_zoom_in(img_t *img)
571{
572 int i;
573 float z;
574
575 if (img == NULL || img->im == NULL)
576 return false;
577
578 for (i = 1; i < ARRLEN(zoom_levels); i++) {
579 z = zoom_levels[i] / 100.0;
580 if (zoomdiff(z, img->zoom) > 0)
581 return img_zoom(img, z);
582 }
583 return false;
584}
585
586bool img_zoom_out(img_t *img)
587{
588 int i;
589 float z;
590
591 if (img == NULL || img->im == NULL)
592 return false;
593
594 for (i = ARRLEN(zoom_levels) - 2; i >= 0; i--) {
595 z = zoom_levels[i] / 100.0;
596 if (zoomdiff(z, img->zoom) < 0)
597 return img_zoom(img, z);
598 }
599 return false;
600}
601
602bool img_move(img_t *img, float dx, float dy)
603{
604 float ox, oy;
605
606 if (img == NULL || img->im == NULL)
607 return false;
608
609 ox = img->x;
610 oy = img->y;
611
612 img->x += dx;
613 img->y += dy;
614
615 img_check_pan(img, true);
616
617 if (ox != img->x || oy != img->y) {
618 img->dirty = true;
619 return true;
620 } else {
621 return false;
622 }
623}
624
625bool img_pan(img_t *img, direction_t dir, int d)
626{
627 /* d < 0: screen-wise
628 * d = 0: 1/5 of screen
629 * d > 0: num of pixels
630 */
631 float x, y;
632
633 if (img == NULL || img->im == NULL || img->win == NULL)
634 return false;
635
636 if (d > 0) {
637 x = y = MAX(1, (float) d * img->zoom);
638 } else {
639 x = img->win->w / (d < 0 ? 1 : 5);
640 y = img->win->h / (d < 0 ? 1 : 5);
641 }
642
643 switch (dir) {
644 case DIR_LEFT:
645 return img_move(img, x, 0.0);
646 case DIR_RIGHT:
647 return img_move(img, -x, 0.0);
648 case DIR_UP:
649 return img_move(img, 0.0, y);
650 case DIR_DOWN:
651 return img_move(img, 0.0, -y);
652 }
653 return false;
654}
655
656bool img_pan_edge(img_t *img, direction_t dir)
657{
658 int ox, oy;
659
660 if (img == NULL || img->im == NULL || img->win == NULL)
661 return false;
662
663 ox = img->x;
664 oy = img->y;
665
666 switch (dir) {
667 case DIR_LEFT:
668 img->x = 0;
669 break;
670 case DIR_RIGHT:
671 img->x = img->win->w - img->w * img->zoom;
672 break;
673 case DIR_UP:
674 img->y = 0;
675 break;
676 case DIR_DOWN:
677 img->y = img->win->h - img->h * img->zoom;
678 break;
679 }
680
681 img_check_pan(img, true);
682
683 if (ox != img->x || oy != img->y) {
684 img->dirty = true;
685 return true;
686 } else {
687 return false;
688 }
689}
690
691void img_rotate(img_t *img, degree_t d)
692{
693 int ox, oy, tmp;
694 bool reapply = d == -1;
695
696 if (img == NULL || img->im == NULL || img->win == NULL)
697 return;
698
699 if (reapply)
700 d = img->rotation;
701
702 imlib_context_set_image(img->im);
703 imlib_image_orientate(d);
704
705 if (d == DEGREE_90 || d == DEGREE_270) {
706 ox = d == DEGREE_90 ? img->x : img->win->w - img->x - img->w * img->zoom;
707 oy = d == DEGREE_270 ? img->y : img->win->h - img->y - img->h * img->zoom;
708
709 img->x = oy + (img->win->w - img->win->h) / 2;
710 img->y = ox + (img->win->h - img->win->w) / 2;
711
712 tmp = img->w;
713 img->w = img->h;
714 img->h = tmp;
715 img->checkpan = true;
716 }
717 if (!reapply)
718 img->rotation = (img->rotation + d) % 4;
719 img->dirty = true;
720}
721
722void img_flip(img_t *img, flipdir_t d)
723{
724 bool reapply = d == -1;
725
726 if (img == NULL || img->im == NULL)
727 return;
728
729 if (reapply)
730 d = img->flip;
731
732 imlib_context_set_image(img->im);
733
734 if (d & FLIP_HORIZONTAL)
735 imlib_image_flip_horizontal();
736 if (d & FLIP_VERTICAL)
737 imlib_image_flip_vertical();
738 if (!reapply)
739 img->flip ^= d;
740 img->dirty = true;
741}
742
743void img_toggle_antialias(img_t *img)
744{
745 if (img == NULL || img->im == NULL)
746 return;
747
748 img->aa = !img->aa;
749 imlib_context_set_image(img->im);
750 imlib_context_set_anti_alias(img->aa);
751 img->dirty = true;
752}
753
754bool img_change_gamma(img_t *img, int d)
755{
756 /* d < 0: decrease gamma
757 * d = 0: reset gamma
758 * d > 0: increase gamma
759 */
760 int gamma;
761
762 if (img == NULL || img->im == NULL)
763 return false;
764
765 if (d == 0)
766 gamma = 0;
767 else if (d < 0)
768 gamma = MAX(-GAMMA_RANGE, img->gamma - 1);
769 else
770 gamma = MIN(+GAMMA_RANGE, img->gamma + 1);
771
772 if (img->gamma != gamma) {
773 img->gamma = gamma;
774 img_apply_gamma(img);
775 img->dirty = true;
776 return true;
777 } else {
778 return false;
779 }
780}
781
782bool img_frame_goto(img_t *img, int n)
783{
784 if (img == NULL || img->im == NULL)
785 return false;
786 if (n < 0 || n >= img->multi.cnt || n == img->multi.sel)
787 return false;
788
789 img->multi.sel = n;
790 img->im = img->multi.frames[n].im;
791
792 imlib_context_set_image(img->im);
793 img->w = imlib_image_get_width();
794 img->h = imlib_image_get_height();
795 img->checkpan = true;
796 img->dirty = true;
797
798 if (img->flip != FLIP_NONE)
799 img_flip(img, -1);
800 if (img->rotation != DEGREE_0)
801 img_rotate(img, -1);
802 return true;
803}
804
805bool img_frame_navigate(img_t *img, int d)
806{
807 if (img == NULL|| img->im == NULL || img->multi.cnt == 0 || d == 0)
808 return false;
809
810 d += img->multi.sel;
811 if (d < 0)
812 d = 0;
813 else if (d >= img->multi.cnt)
814 d = img->multi.cnt - 1;
815
816 return img_frame_goto(img, d);
817}
818
819bool img_frame_animate(img_t *img, bool restart)
820{
821 if (img == NULL || img->im == NULL || img->multi.cnt == 0)
822 return false;
823
824 if (img->multi.sel + 1 >= img->multi.cnt) {
825 if (restart || GIF_LOOP == 1) {
826 img_frame_goto(img, 0);
827 } else if (GIF_LOOP == -1 && img->multi.repeat != 0) {
828 if (img->multi.repeat > 0)
829 img->multi.repeat--;
830 img_frame_goto(img, 0);
831 } else {
832 img->multi.animate = false;
833 return false;
834 }
835 } else if (!restart) {
836 img_frame_goto(img, img->multi.sel + 1);
837 }
838 img->multi.animate = true;
839 img->dirty = true;
840
841 return true;
842}