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nsxivmain.c

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1/* Copyright 2011-2013 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#include "sxiv.h"
20#define _MAPPINGS_CONFIG
21#include "config.h"
22
23#include <stdlib.h>
24#include <string.h>
25#include <fcntl.h>
26#include <unistd.h>
27#include <errno.h>
28#include <locale.h>
29#include <signal.h>
30#include <sys/select.h>
31#include <sys/stat.h>
32#include <sys/wait.h>
33#include <time.h>
34#include <X11/keysym.h>
35#include <X11/XF86keysym.h>
36
37typedef struct {
38 struct timeval when;
39 bool active;
40 timeout_f handler;
41} timeout_t;
42
43/* timeout handler functions: */
44void redraw(void);
45void reset_cursor(void);
46void animate(void);
47void slideshow(void);
48void clear_resize(void);
49
50appmode_t mode;
51arl_t arl;
52img_t img;
53tns_t tns;
54win_t win;
55
56fileinfo_t *files;
57int filecnt, fileidx;
58int alternate;
59int markcnt;
60int markidx;
61
62int prefix;
63bool extprefix;
64
65bool resized = false;
66
67typedef struct {
68 int err;
69 char *cmd;
70} extcmd_t;
71
72struct {
73 extcmd_t f;
74 int fd;
75 unsigned int i, lastsep;
76 pid_t pid;
77} info;
78
79struct {
80 extcmd_t f;
81 bool warned;
82} keyhandler;
83
84timeout_t timeouts[] = {
85 { { 0, 0 }, false, redraw },
86 { { 0, 0 }, false, reset_cursor },
87 { { 0, 0 }, false, animate },
88 { { 0, 0 }, false, slideshow },
89 { { 0, 0 }, false, clear_resize },
90};
91
92cursor_t imgcursor[3] = {
93 CURSOR_ARROW, CURSOR_ARROW, CURSOR_ARROW
94};
95
96void cleanup(void)
97{
98 img_close(&img, false);
99 arl_cleanup(&arl);
100 tns_free(&tns);
101 win_close(&win);
102}
103
104void check_add_file(char *filename, bool given)
105{
106 char *path;
107
108 if (*filename == '\0')
109 return;
110
111 if (access(filename, R_OK) < 0 ||
112 (path = realpath(filename, NULL)) == NULL)
113 {
114 if (given)
115 error(0, errno, "%s", filename);
116 return;
117 }
118
119 if (fileidx == filecnt) {
120 filecnt *= 2;
121 files = erealloc(files, filecnt * sizeof(*files));
122 memset(&files[filecnt/2], 0, filecnt/2 * sizeof(*files));
123 }
124
125 files[fileidx].name = estrdup(filename);
126 files[fileidx].path = path;
127 if (given)
128 files[fileidx].flags |= FF_WARN;
129 fileidx++;
130}
131
132void remove_file(int n, bool manual)
133{
134 if (n < 0 || n >= filecnt)
135 return;
136
137 if (filecnt == 1) {
138 if (!manual)
139 fprintf(stderr, "sxiv: no more files to display, aborting\n");
140 exit(manual ? EXIT_SUCCESS : EXIT_FAILURE);
141 }
142 if (files[n].flags & FF_MARK)
143 markcnt--;
144
145 if (files[n].path != files[n].name)
146 free((void*) files[n].path);
147 free((void*) files[n].name);
148
149 if (n + 1 < filecnt) {
150 if (tns.thumbs != NULL) {
151 memmove(tns.thumbs + n, tns.thumbs + n + 1, (filecnt - n - 1) *
152 sizeof(*tns.thumbs));
153 memset(tns.thumbs + filecnt - 1, 0, sizeof(*tns.thumbs));
154 }
155 memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(*files));
156 }
157 filecnt--;
158 if (fileidx > n || fileidx == filecnt)
159 fileidx--;
160 if (alternate > n || alternate == filecnt)
161 alternate--;
162 if (markidx > n || markidx == filecnt)
163 markidx--;
164}
165
166void set_timeout(timeout_f handler, int time, bool overwrite)
167{
168 int i;
169
170 for (i = 0; i < ARRLEN(timeouts); i++) {
171 if (timeouts[i].handler == handler) {
172 if (!timeouts[i].active || overwrite) {
173 gettimeofday(&timeouts[i].when, 0);
174 TV_ADD_MSEC(&timeouts[i].when, time);
175 timeouts[i].active = true;
176 }
177 return;
178 }
179 }
180}
181
182void reset_timeout(timeout_f handler)
183{
184 int i;
185
186 for (i = 0; i < ARRLEN(timeouts); i++) {
187 if (timeouts[i].handler == handler) {
188 timeouts[i].active = false;
189 return;
190 }
191 }
192}
193
194bool check_timeouts(struct timeval *t)
195{
196 int i = 0, tdiff, tmin = -1;
197 struct timeval now;
198
199 while (i < ARRLEN(timeouts)) {
200 if (timeouts[i].active) {
201 gettimeofday(&now, 0);
202 tdiff = TV_DIFF(&timeouts[i].when, &now);
203 if (tdiff <= 0) {
204 timeouts[i].active = false;
205 if (timeouts[i].handler != NULL)
206 timeouts[i].handler();
207 i = tmin = -1;
208 } else if (tmin < 0 || tdiff < tmin) {
209 tmin = tdiff;
210 }
211 }
212 i++;
213 }
214 if (tmin > 0 && t != NULL)
215 TV_SET_MSEC(t, tmin);
216 return tmin > 0;
217}
218
219void close_info(void)
220{
221 if (info.fd != -1) {
222 kill(info.pid, SIGTERM);
223 close(info.fd);
224 info.fd = -1;
225 }
226}
227
228void open_info(void)
229{
230 int pfd[2];
231 char w[12], h[12];
232
233 if (info.f.err != 0 || info.fd >= 0 || win.bar.h == 0)
234 return;
235 win.bar.l.buf[0] = '\0';
236 if (pipe(pfd) < 0)
237 return;
238 if ((info.pid = fork()) == 0) {
239 close(pfd[0]);
240 dup2(pfd[1], 1);
241 snprintf(w, sizeof(w), "%d", img.w);
242 snprintf(h, sizeof(h), "%d", img.h);
243 execl(info.f.cmd, info.f.cmd, files[fileidx].name, w, h, NULL);
244 error(EXIT_FAILURE, errno, "exec: %s", info.f.cmd);
245 }
246 close(pfd[1]);
247 if (info.pid < 0) {
248 close(pfd[0]);
249 } else {
250 fcntl(pfd[0], F_SETFL, O_NONBLOCK);
251 info.fd = pfd[0];
252 info.i = info.lastsep = 0;
253 }
254}
255
256void read_info(void)
257{
258 ssize_t i, n;
259 char buf[BAR_L_LEN];
260
261 while (true) {
262 n = read(info.fd, buf, sizeof(buf));
263 if (n < 0 && errno == EAGAIN)
264 return;
265 else if (n == 0)
266 goto end;
267 for (i = 0; i < n; i++) {
268 if (buf[i] == '\n') {
269 if (info.lastsep == 0) {
270 win.bar.l.buf[info.i++] = ' ';
271 info.lastsep = 1;
272 }
273 } else {
274 win.bar.l.buf[info.i++] = buf[i];
275 info.lastsep = 0;
276 }
277 if (info.i + 1 == win.bar.l.size)
278 goto end;
279 }
280 }
281end:
282 info.i -= info.lastsep;
283 win.bar.l.buf[info.i] = '\0';
284 win_draw(&win);
285 close_info();
286}
287
288void load_image(int new)
289{
290 bool prev = new < fileidx;
291 static int current;
292
293 if (new < 0 || new >= filecnt)
294 return;
295
296 if (win.xwin != None)
297 win_set_cursor(&win, CURSOR_WATCH);
298 reset_timeout(slideshow);
299
300 if (new != current)
301 alternate = current;
302
303 img_close(&img, false);
304 while (!img_load(&img, &files[new])) {
305 remove_file(new, false);
306 if (new >= filecnt)
307 new = filecnt - 1;
308 else if (new > 0 && prev)
309 new--;
310 }
311 files[new].flags &= ~FF_WARN;
312 fileidx = current = new;
313
314 close_info();
315 open_info();
316 arl_setup(&arl, files[fileidx].path);
317
318 if (img.multi.cnt > 0 && img.multi.animate)
319 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
320 else
321 reset_timeout(animate);
322}
323
324bool mark_image(int n, bool on)
325{
326 markidx = n;
327 if (!!(files[n].flags & FF_MARK) != on) {
328 files[n].flags ^= FF_MARK;
329 markcnt += on ? 1 : -1;
330 if (mode == MODE_THUMB)
331 tns_mark(&tns, n, on);
332 return true;
333 }
334 return false;
335}
336
337void bar_put(win_bar_t *bar, const char *fmt, ...)
338{
339 size_t len = bar->size - (bar->p - bar->buf), n;
340 va_list ap;
341
342 va_start(ap, fmt);
343 n = vsnprintf(bar->p, len, fmt, ap);
344 bar->p += MIN(len, n);
345 va_end(ap);
346}
347
348#define BAR_SEP " "
349
350void update_info(void)
351{
352 unsigned int i, fn, fw;
353 const char * mark;
354 win_bar_t *l = &win.bar.l, *r = &win.bar.r;
355
356 /* update bar contents */
357 if (win.bar.h == 0)
358 return;
359 for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
360 mark = files[fileidx].flags & FF_MARK ? "* " : "";
361 l->p = l->buf;
362 r->p = r->buf;
363 if (mode == MODE_THUMB) {
364 if (tns.loadnext < tns.end)
365 bar_put(l, "Loading... %0*d", fw, tns.loadnext + 1);
366 else if (tns.initnext < filecnt)
367 bar_put(l, "Caching... %0*d", fw, tns.initnext + 1);
368 else
369 strncpy(l->buf, files[fileidx].name, l->size);
370 bar_put(r, "%s%0*d/%d", mark, fw, fileidx + 1, filecnt);
371 } else {
372 bar_put(r, "%s", mark);
373 if (img.ss.on) {
374 if (img.ss.delay % 10 != 0)
375 bar_put(r, "%2.1fs" BAR_SEP, (float)img.ss.delay / 10);
376 else
377 bar_put(r, "%ds" BAR_SEP, img.ss.delay / 10);
378 }
379 if (img.gamma != 0)
380 bar_put(r, "G%+d" BAR_SEP, img.gamma);
381 bar_put(r, "%3d%%" BAR_SEP, (int) (img.zoom * 100.0));
382 if (img.multi.cnt > 0) {
383 for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
384 bar_put(r, "%0*d/%d" BAR_SEP, fn, img.multi.sel + 1, img.multi.cnt);
385 }
386 bar_put(r, "%0*d/%d", fw, fileidx + 1, filecnt);
387 if (info.f.err)
388 strncpy(l->buf, files[fileidx].name, l->size);
389 }
390}
391
392int ptr_third_x(void)
393{
394 int x, y;
395
396 win_cursor_pos(&win, &x, &y);
397 return MAX(0, MIN(2, (x / (win.w * 0.33))));
398}
399
400void redraw(void)
401{
402 int t;
403
404 if (mode == MODE_IMAGE) {
405 img_render(&img);
406 if (img.ss.on) {
407 t = img.ss.delay * 100;
408 if (img.multi.cnt > 0 && img.multi.animate)
409 t = MAX(t, img.multi.length);
410 set_timeout(slideshow, t, false);
411 }
412 } else {
413 tns_render(&tns);
414 }
415 update_info();
416 win_draw(&win);
417 reset_timeout(redraw);
418 reset_cursor();
419}
420
421void reset_cursor(void)
422{
423 int c, i;
424 cursor_t cursor = CURSOR_NONE;
425
426 if (mode == MODE_IMAGE) {
427 for (i = 0; i < ARRLEN(timeouts); i++) {
428 if (timeouts[i].handler == reset_cursor) {
429 if (timeouts[i].active) {
430 c = ptr_third_x();
431 c = MAX(fileidx > 0 ? 0 : 1, c);
432 c = MIN(fileidx + 1 < filecnt ? 2 : 1, c);
433 cursor = imgcursor[c];
434 }
435 break;
436 }
437 }
438 } else {
439 if (tns.loadnext < tns.end || tns.initnext < filecnt)
440 cursor = CURSOR_WATCH;
441 else
442 cursor = CURSOR_ARROW;
443 }
444 win_set_cursor(&win, cursor);
445}
446
447void animate(void)
448{
449 if (img_frame_animate(&img)) {
450 redraw();
451 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
452 }
453}
454
455void slideshow(void)
456{
457 load_image(fileidx + 1 < filecnt ? fileidx + 1 : 0);
458 redraw();
459}
460
461void clear_resize(void)
462{
463 resized = false;
464}
465
466Bool is_input_ev(Display *dpy, XEvent *ev, XPointer arg)
467{
468 return ev->type == ButtonPress || ev->type == KeyPress;
469}
470
471void run_key_handler(const char *key, unsigned int mask)
472{
473 pid_t pid;
474 FILE *pfs;
475 bool marked = mode == MODE_THUMB && markcnt > 0;
476 bool changed = false;
477 int f, i, pfd[2];
478 int fcnt = marked ? markcnt : 1;
479 char kstr[32];
480 struct stat *oldst, st;
481 XEvent dump;
482
483 if (keyhandler.f.err != 0) {
484 if (!keyhandler.warned) {
485 error(0, keyhandler.f.err, "%s", keyhandler.f.cmd);
486 keyhandler.warned = true;
487 }
488 return;
489 }
490 if (key == NULL)
491 return;
492
493 if (pipe(pfd) < 0) {
494 error(0, errno, "pipe");
495 return;
496 }
497 if ((pfs = fdopen(pfd[1], "w")) == NULL) {
498 error(0, errno, "open pipe");
499 close(pfd[0]), close(pfd[1]);
500 return;
501 }
502 oldst = emalloc(fcnt * sizeof(*oldst));
503
504 close_info();
505 strncpy(win.bar.l.buf, "Running key handler...", win.bar.l.size);
506 win_draw(&win);
507 win_set_cursor(&win, CURSOR_WATCH);
508
509 snprintf(kstr, sizeof(kstr), "%s%s%s%s",
510 mask & ControlMask ? "C-" : "",
511 mask & Mod1Mask ? "M-" : "",
512 mask & ShiftMask ? "S-" : "", key);
513
514 if ((pid = fork()) == 0) {
515 close(pfd[1]);
516 dup2(pfd[0], 0);
517 execl(keyhandler.f.cmd, keyhandler.f.cmd, kstr, NULL);
518 error(EXIT_FAILURE, errno, "exec: %s", keyhandler.f.cmd);
519 }
520 close(pfd[0]);
521 if (pid < 0) {
522 error(0, errno, "fork");
523 fclose(pfs);
524 goto end;
525 }
526
527 for (f = i = 0; f < fcnt; i++) {
528 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
529 stat(files[i].path, &oldst[f]);
530 fprintf(pfs, "%s\n", files[i].name);
531 f++;
532 }
533 }
534 fclose(pfs);
535 while (waitpid(pid, NULL, 0) == -1 && errno == EINTR);
536
537 for (f = i = 0; f < fcnt; i++) {
538 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
539 if (stat(files[i].path, &st) != 0 ||
540 memcmp(&oldst[f].st_mtime, &st.st_mtime, sizeof(st.st_mtime)) != 0)
541 {
542 if (tns.thumbs != NULL) {
543 tns_unload(&tns, i);
544 tns.loadnext = MIN(tns.loadnext, i);
545 }
546 changed = true;
547 }
548 f++;
549 }
550 }
551 /* drop user input events that occurred while running the key handler */
552 while (XCheckIfEvent(win.env.dpy, &dump, is_input_ev, NULL));
553
554end:
555 if (mode == MODE_IMAGE) {
556 if (changed) {
557 img_close(&img, true);
558 load_image(fileidx);
559 } else {
560 open_info();
561 }
562 }
563 free(oldst);
564 reset_cursor();
565 redraw();
566}
567
568#define MODMASK(mask) ((mask) & (ShiftMask|ControlMask|Mod1Mask))
569
570void on_keypress(XKeyEvent *kev)
571{
572 int i;
573 unsigned int sh = 0;
574 KeySym ksym, shksym;
575 char dummy, key;
576 bool dirty = false;
577
578 XLookupString(kev, &key, 1, &ksym, NULL);
579
580 if (kev->state & ShiftMask) {
581 kev->state &= ~ShiftMask;
582 XLookupString(kev, &dummy, 1, &shksym, NULL);
583 kev->state |= ShiftMask;
584 if (ksym != shksym)
585 sh = ShiftMask;
586 }
587 if (IsModifierKey(ksym))
588 return;
589 if (ksym == XK_Escape && MODMASK(kev->state) == 0) {
590 extprefix = False;
591 } else if (extprefix) {
592 run_key_handler(XKeysymToString(ksym), kev->state & ~sh);
593 extprefix = False;
594 } else if (key >= '0' && key <= '9') {
595 /* number prefix for commands */
596 prefix = prefix * 10 + (int) (key - '0');
597 return;
598 } else for (i = 0; i < ARRLEN(keys); i++) {
599 if (keys[i].ksym == ksym &&
600 MODMASK(keys[i].mask | sh) == MODMASK(kev->state) &&
601 keys[i].cmd >= 0 && keys[i].cmd < CMD_COUNT &&
602 (cmds[keys[i].cmd].mode < 0 || cmds[keys[i].cmd].mode == mode))
603 {
604 if (cmds[keys[i].cmd].func(keys[i].arg))
605 dirty = true;
606 }
607 }
608 if (dirty)
609 redraw();
610 prefix = 0;
611}
612
613void on_buttonpress(XButtonEvent *bev)
614{
615 int i, sel;
616 bool dirty = false;
617 static Time firstclick;
618
619 if (mode == MODE_IMAGE) {
620 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
621 reset_cursor();
622
623 for (i = 0; i < ARRLEN(buttons); i++) {
624 if (buttons[i].button == bev->button &&
625 MODMASK(buttons[i].mask) == MODMASK(bev->state) &&
626 buttons[i].cmd >= 0 && buttons[i].cmd < CMD_COUNT &&
627 (cmds[buttons[i].cmd].mode < 0 || cmds[buttons[i].cmd].mode == mode))
628 {
629 if (cmds[buttons[i].cmd].func(buttons[i].arg))
630 dirty = true;
631 }
632 }
633 if (dirty)
634 redraw();
635 } else {
636 /* thumbnail mode (hard-coded) */
637 switch (bev->button) {
638 case Button1:
639 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
640 if (sel != fileidx) {
641 tns_highlight(&tns, fileidx, false);
642 tns_highlight(&tns, sel, true);
643 fileidx = sel;
644 firstclick = bev->time;
645 redraw();
646 } else if (bev->time - firstclick <= TO_DOUBLE_CLICK) {
647 mode = MODE_IMAGE;
648 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
649 load_image(fileidx);
650 redraw();
651 } else {
652 firstclick = bev->time;
653 }
654 }
655 break;
656 case Button3:
657 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
658 bool on = !(files[sel].flags & FF_MARK);
659 XEvent e;
660
661 for (;;) {
662 if (sel >= 0 && mark_image(sel, on))
663 redraw();
664 XMaskEvent(win.env.dpy,
665 ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
666 if (e.type == ButtonPress || e.type == ButtonRelease)
667 break;
668 while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
669 sel = tns_translate(&tns, e.xbutton.x, e.xbutton.y);
670 }
671 }
672 break;
673 case Button4:
674 case Button5:
675 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN,
676 (bev->state & ControlMask) != 0))
677 redraw();
678 break;
679 }
680 }
681 prefix = 0;
682}
683
684const struct timespec ten_ms = {0, 10000000};
685
686void run(void)
687{
688 int xfd;
689 fd_set fds;
690 struct timeval timeout;
691 bool discard, init_thumb, load_thumb, to_set;
692 XEvent ev, nextev;
693
694 while (true) {
695 to_set = check_timeouts(&timeout);
696 init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
697 load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
698
699 if ((init_thumb || load_thumb || to_set || info.fd != -1 ||
700 arl.fd != -1) && XPending(win.env.dpy) == 0)
701 {
702 if (load_thumb) {
703 set_timeout(redraw, TO_REDRAW_THUMBS, false);
704 if (!tns_load(&tns, tns.loadnext, false, false)) {
705 remove_file(tns.loadnext, false);
706 tns.dirty = true;
707 }
708 if (tns.loadnext >= tns.end)
709 redraw();
710 } else if (init_thumb) {
711 set_timeout(redraw, TO_REDRAW_THUMBS, false);
712 if (!tns_load(&tns, tns.initnext, false, true))
713 remove_file(tns.initnext, false);
714 } else {
715 xfd = ConnectionNumber(win.env.dpy);
716 FD_ZERO(&fds);
717 FD_SET(xfd, &fds);
718 if (info.fd != -1) {
719 FD_SET(info.fd, &fds);
720 xfd = MAX(xfd, info.fd);
721 }
722 if (arl.fd != -1) {
723 FD_SET(arl.fd, &fds);
724 xfd = MAX(xfd, arl.fd);
725 }
726 select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
727 if (info.fd != -1 && FD_ISSET(info.fd, &fds))
728 read_info();
729 if (arl.fd != -1 && FD_ISSET(arl.fd, &fds)) {
730 if (arl_handle(&arl)) {
731 /* when too fast, imlib2 can't load the image */
732 nanosleep(&ten_ms, NULL);
733 img_close(&img, true);
734 load_image(fileidx);
735 redraw();
736 }
737 }
738 }
739 continue;
740 }
741
742 do {
743 XNextEvent(win.env.dpy, &ev);
744 discard = false;
745 if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
746 XPeekEvent(win.env.dpy, &nextev);
747 switch (ev.type) {
748 case ConfigureNotify:
749 case MotionNotify:
750 discard = ev.type == nextev.type;
751 break;
752 case KeyPress:
753 discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
754 && ev.xkey.keycode == nextev.xkey.keycode;
755 break;
756 }
757 }
758 } while (discard);
759
760 switch (ev.type) {
761 /* handle events */
762 case ButtonPress:
763 on_buttonpress(&ev.xbutton);
764 break;
765 case ClientMessage:
766 if ((Atom) ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
767 cmds[g_quit].func(0);
768 break;
769 case ConfigureNotify:
770 if (win_configure(&win, &ev.xconfigure)) {
771 if (mode == MODE_IMAGE) {
772 img.dirty = true;
773 img.checkpan = true;
774 } else {
775 tns.dirty = true;
776 }
777 if (!resized || win.fullscreen) {
778 redraw();
779 set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
780 resized = true;
781 } else {
782 set_timeout(redraw, TO_REDRAW_RESIZE, false);
783 }
784 }
785 break;
786 case KeyPress:
787 on_keypress(&ev.xkey);
788 break;
789 case MotionNotify:
790 if (mode == MODE_IMAGE) {
791 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
792 reset_cursor();
793 }
794 break;
795 }
796 }
797}
798
799int fncmp(const void *a, const void *b)
800{
801 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
802}
803
804void sigchld(int sig)
805{
806 while (waitpid(-1, NULL, WNOHANG) > 0);
807}
808
809void setup_signal(int sig, void (*handler)(int sig))
810{
811 struct sigaction sa;
812
813 sa.sa_handler = handler;
814 sigemptyset(&sa.sa_mask);
815 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
816 if (sigaction(sig, &sa, 0) == -1)
817 error(EXIT_FAILURE, errno, "signal %d", sig);
818}
819
820int main(int argc, char **argv)
821{
822 int i, start;
823 size_t n;
824 ssize_t len;
825 char *filename;
826 const char *homedir, *dsuffix = "";
827 struct stat fstats;
828 r_dir_t dir;
829
830 setup_signal(SIGCHLD, sigchld);
831 setup_signal(SIGPIPE, SIG_IGN);
832
833 setlocale(LC_COLLATE, "");
834
835 parse_options(argc, argv);
836
837 if (options->clean_cache) {
838 tns_init(&tns, NULL, NULL, NULL, NULL);
839 tns_clean_cache(&tns);
840 exit(EXIT_SUCCESS);
841 }
842
843 if (options->filecnt == 0 && !options->from_stdin) {
844 print_usage();
845 exit(EXIT_FAILURE);
846 }
847
848 if (options->recursive || options->from_stdin)
849 filecnt = 1024;
850 else
851 filecnt = options->filecnt;
852
853 files = emalloc(filecnt * sizeof(*files));
854 memset(files, 0, filecnt * sizeof(*files));
855 fileidx = 0;
856
857 if (options->from_stdin) {
858 n = 0;
859 filename = NULL;
860 while ((len = getline(&filename, &n, stdin)) > 0) {
861 if (filename[len-1] == '\n')
862 filename[len-1] = '\0';
863 check_add_file(filename, true);
864 }
865 free(filename);
866 }
867
868 for (i = 0; i < options->filecnt; i++) {
869 filename = options->filenames[i];
870
871 if (stat(filename, &fstats) < 0) {
872 error(0, errno, "%s", filename);
873 continue;
874 }
875 if (!S_ISDIR(fstats.st_mode)) {
876 check_add_file(filename, true);
877 } else {
878 if (r_opendir(&dir, filename, options->recursive) < 0) {
879 error(0, errno, "%s", filename);
880 continue;
881 }
882 start = fileidx;
883 while ((filename = r_readdir(&dir, true)) != NULL) {
884 check_add_file(filename, false);
885 free((void*) filename);
886 }
887 r_closedir(&dir);
888 if (fileidx - start > 1)
889 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
890 }
891 }
892
893 if (fileidx == 0)
894 error(EXIT_FAILURE, 0, "No valid image file given, aborting");
895
896 filecnt = fileidx;
897 fileidx = options->startnum < filecnt ? options->startnum : 0;
898
899 for (i = 0; i < ARRLEN(buttons); i++) {
900 if (buttons[i].cmd == i_cursor_navigate) {
901 imgcursor[0] = CURSOR_LEFT;
902 imgcursor[2] = CURSOR_RIGHT;
903 break;
904 }
905 }
906
907 win_init(&win);
908 img_init(&img, &win);
909 arl_init(&arl);
910
911 if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
912 homedir = getenv("HOME");
913 dsuffix = "/.config";
914 }
915 if (homedir != NULL) {
916 extcmd_t *cmd[] = { &info.f, &keyhandler.f };
917 const char *name[] = { "image-info", "key-handler" };
918
919 for (i = 0; i < ARRLEN(cmd); i++) {
920 n = strlen(homedir) + strlen(dsuffix) + strlen(name[i]) + 12;
921 cmd[i]->cmd = (char*) emalloc(n);
922 snprintf(cmd[i]->cmd, n, "%s%s/sxiv/exec/%s", homedir, dsuffix, name[i]);
923 if (access(cmd[i]->cmd, X_OK) != 0)
924 cmd[i]->err = errno;
925 }
926 } else {
927 error(0, 0, "Exec directory not found");
928 }
929 info.fd = -1;
930
931 if (options->thumb_mode) {
932 mode = MODE_THUMB;
933 tns_init(&tns, files, &filecnt, &fileidx, &win);
934 while (!tns_load(&tns, fileidx, false, false))
935 remove_file(fileidx, false);
936 } else {
937 mode = MODE_IMAGE;
938 tns.thumbs = NULL;
939 load_image(fileidx);
940 }
941 win_open(&win);
942 win_set_cursor(&win, CURSOR_WATCH);
943
944 atexit(cleanup);
945
946 set_timeout(redraw, 25, false);
947
948 run();
949
950 return 0;
951}