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nsxivmain.c

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1/* Copyright 2011-2013 Bert Muennich
2 *
3 * This file is a part of nsxiv.
4 *
5 * nsxiv 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 * nsxiv 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 nsxiv. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#include "nsxiv.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, "nsxiv: 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 win_set_title(&win, files[fileidx].path);
318
319 if (img.multi.cnt > 0 && img.multi.animate)
320 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
321 else
322 reset_timeout(animate);
323}
324
325bool mark_image(int n, bool on)
326{
327 markidx = n;
328 if (!!(files[n].flags & FF_MARK) != on) {
329 files[n].flags ^= FF_MARK;
330 markcnt += on ? 1 : -1;
331 if (mode == MODE_THUMB)
332 tns_mark(&tns, n, on);
333 return true;
334 }
335 return false;
336}
337
338void bar_put(win_bar_t *bar, const char *fmt, ...)
339{
340 size_t len = bar->size - (bar->p - bar->buf), n;
341 va_list ap;
342
343 va_start(ap, fmt);
344 n = vsnprintf(bar->p, len, fmt, ap);
345 bar->p += MIN(len, n);
346 va_end(ap);
347}
348
349#define BAR_SEP " "
350
351void update_info(void)
352{
353 unsigned int i, fn, fw;
354 const char * mark;
355 win_bar_t *l = &win.bar.l, *r = &win.bar.r;
356
357 /* update bar contents */
358 if (win.bar.h == 0)
359 return;
360 for (fw = 0, i = filecnt; i > 0; fw++, i /= 10);
361 mark = files[fileidx].flags & FF_MARK ? "* " : "";
362 l->p = l->buf;
363 r->p = r->buf;
364 if (mode == MODE_THUMB) {
365 if (tns.loadnext < tns.end)
366 bar_put(l, "Loading... %0*d", fw, tns.loadnext + 1);
367 else if (tns.initnext < filecnt)
368 bar_put(l, "Caching... %0*d", fw, tns.initnext + 1);
369 else
370 strncpy(l->buf, files[fileidx].name, l->size);
371 bar_put(r, "%s%0*d/%d", mark, fw, fileidx + 1, filecnt);
372 } else {
373 bar_put(r, "%s", mark);
374 if (img.ss.on) {
375 if (img.ss.delay % 10 != 0)
376 bar_put(r, "%2.1fs" BAR_SEP, (float)img.ss.delay / 10);
377 else
378 bar_put(r, "%ds" BAR_SEP, img.ss.delay / 10);
379 }
380 if (img.gamma != 0)
381 bar_put(r, "G%+d" BAR_SEP, img.gamma);
382 bar_put(r, "%3d%%" BAR_SEP, (int) (img.zoom * 100.0));
383 if (img.multi.cnt > 0) {
384 for (fn = 0, i = img.multi.cnt; i > 0; fn++, i /= 10);
385 bar_put(r, "%0*d/%d" BAR_SEP, fn, img.multi.sel + 1, img.multi.cnt);
386 }
387 bar_put(r, "%0*d/%d", fw, fileidx + 1, filecnt);
388 if (info.f.err)
389 strncpy(l->buf, files[fileidx].name, l->size);
390 }
391}
392
393int ptr_third_x(void)
394{
395 int x, y;
396
397 win_cursor_pos(&win, &x, &y);
398 return MAX(0, MIN(2, (x / (win.w * 0.33))));
399}
400
401void redraw(void)
402{
403 int t;
404
405 if (mode == MODE_IMAGE) {
406 img_render(&img);
407 if (img.ss.on) {
408 t = img.ss.delay * 100;
409 if (img.multi.cnt > 0 && img.multi.animate)
410 t = MAX(t, img.multi.length);
411 set_timeout(slideshow, t, false);
412 }
413 } else {
414 tns_render(&tns);
415 }
416 update_info();
417 win_draw(&win);
418 reset_timeout(redraw);
419 reset_cursor();
420}
421
422void reset_cursor(void)
423{
424 int c, i;
425 cursor_t cursor = CURSOR_NONE;
426
427 if (mode == MODE_IMAGE) {
428 for (i = 0; i < ARRLEN(timeouts); i++) {
429 if (timeouts[i].handler == reset_cursor) {
430 if (timeouts[i].active) {
431 c = ptr_third_x();
432 c = MAX(fileidx > 0 ? 0 : 1, c);
433 c = MIN(fileidx + 1 < filecnt ? 2 : 1, c);
434 cursor = imgcursor[c];
435 }
436 break;
437 }
438 }
439 } else {
440 if (tns.loadnext < tns.end || tns.initnext < filecnt)
441 cursor = CURSOR_WATCH;
442 else
443 cursor = CURSOR_ARROW;
444 }
445 win_set_cursor(&win, cursor);
446}
447
448void animate(void)
449{
450 if (img_frame_animate(&img)) {
451 redraw();
452 set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
453 }
454}
455
456void slideshow(void)
457{
458 load_image(fileidx + 1 < filecnt ? fileidx + 1 : 0);
459 redraw();
460}
461
462void clear_resize(void)
463{
464 resized = false;
465}
466
467Bool is_input_ev(Display *dpy, XEvent *ev, XPointer arg)
468{
469 return ev->type == ButtonPress || ev->type == KeyPress;
470}
471
472void run_key_handler(const char *key, unsigned int mask)
473{
474 pid_t pid;
475 FILE *pfs;
476 bool marked = mode == MODE_THUMB && markcnt > 0;
477 bool changed = false;
478 int f, i, pfd[2];
479 int fcnt = marked ? markcnt : 1;
480 char kstr[32];
481 struct stat *oldst, st;
482 XEvent dump;
483
484 if (keyhandler.f.err != 0) {
485 if (!keyhandler.warned) {
486 error(0, keyhandler.f.err, "%s", keyhandler.f.cmd);
487 keyhandler.warned = true;
488 }
489 return;
490 }
491 if (key == NULL)
492 return;
493
494 if (pipe(pfd) < 0) {
495 error(0, errno, "pipe");
496 return;
497 }
498 if ((pfs = fdopen(pfd[1], "w")) == NULL) {
499 error(0, errno, "open pipe");
500 close(pfd[0]), close(pfd[1]);
501 return;
502 }
503 oldst = emalloc(fcnt * sizeof(*oldst));
504
505 close_info();
506 strncpy(win.bar.l.buf, "Running key handler...", win.bar.l.size);
507 win_draw(&win);
508 win_set_cursor(&win, CURSOR_WATCH);
509
510 snprintf(kstr, sizeof(kstr), "%s%s%s%s",
511 mask & ControlMask ? "C-" : "",
512 mask & Mod1Mask ? "M-" : "",
513 mask & ShiftMask ? "S-" : "", key);
514
515 if ((pid = fork()) == 0) {
516 close(pfd[1]);
517 dup2(pfd[0], 0);
518 execl(keyhandler.f.cmd, keyhandler.f.cmd, kstr, NULL);
519 error(EXIT_FAILURE, errno, "exec: %s", keyhandler.f.cmd);
520 }
521 close(pfd[0]);
522 if (pid < 0) {
523 error(0, errno, "fork");
524 fclose(pfs);
525 goto end;
526 }
527
528 for (f = i = 0; f < fcnt; i++) {
529 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
530 stat(files[i].path, &oldst[f]);
531 fprintf(pfs, "%s\n", files[i].name);
532 f++;
533 }
534 }
535 fclose(pfs);
536 while (waitpid(pid, NULL, 0) == -1 && errno == EINTR);
537
538 for (f = i = 0; f < fcnt; i++) {
539 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
540 if (stat(files[i].path, &st) != 0 ||
541 memcmp(&oldst[f].st_mtime, &st.st_mtime, sizeof(st.st_mtime)) != 0)
542 {
543 if (tns.thumbs != NULL) {
544 tns_unload(&tns, i);
545 tns.loadnext = MIN(tns.loadnext, i);
546 }
547 changed = true;
548 }
549 f++;
550 }
551 }
552 /* drop user input events that occurred while running the key handler */
553 while (XCheckIfEvent(win.env.dpy, &dump, is_input_ev, NULL));
554
555end:
556 if (mode == MODE_IMAGE) {
557 if (changed) {
558 img_close(&img, true);
559 load_image(fileidx);
560 } else {
561 open_info();
562 }
563 }
564 free(oldst);
565 reset_cursor();
566 redraw();
567}
568
569#define MODMASK(mask) ((mask) & ~ignore_mask)
570
571void on_keypress(XKeyEvent *kev)
572{
573 int i;
574 unsigned int sh = 0;
575 KeySym ksym, shksym;
576 char dummy, key;
577 bool dirty = false;
578
579 XLookupString(kev, &key, 1, &ksym, NULL);
580
581 if (kev->state & ShiftMask) {
582 kev->state &= ~ShiftMask;
583 XLookupString(kev, &dummy, 1, &shksym, NULL);
584 kev->state |= ShiftMask;
585 if (ksym != shksym)
586 sh = ShiftMask;
587 }
588 if (IsModifierKey(ksym))
589 return;
590 if (extprefix && ksym == keyhandler_abort && MODMASK(kev->state) == 0) {
591 extprefix = False;
592 } else if (extprefix) {
593 run_key_handler(XKeysymToString(ksym), kev->state & ~sh);
594 extprefix = False;
595 } else if (key >= '0' && key <= '9') {
596 /* number prefix for commands */
597 prefix = prefix * 10 + (int) (key - '0');
598 return;
599 } else for (i = 0; i < ARRLEN(keys); i++) {
600 if (keys[i].ksym == ksym &&
601 MODMASK(keys[i].mask | sh) == MODMASK(kev->state) &&
602 keys[i].cmd >= 0 && keys[i].cmd < CMD_COUNT &&
603 (cmds[keys[i].cmd].mode < 0 || cmds[keys[i].cmd].mode == mode))
604 {
605 if (cmds[keys[i].cmd].func(keys[i].arg))
606 dirty = true;
607 }
608 }
609 if (dirty)
610 redraw();
611 prefix = 0;
612}
613
614void on_buttonpress(XButtonEvent *bev)
615{
616 int i, sel;
617 bool dirty = false;
618 static Time firstclick;
619
620 if (mode == MODE_IMAGE) {
621 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
622 reset_cursor();
623
624 for (i = 0; i < ARRLEN(buttons); i++) {
625 if (buttons[i].button == bev->button &&
626 MODMASK(buttons[i].mask) == MODMASK(bev->state) &&
627 buttons[i].cmd >= 0 && buttons[i].cmd < CMD_COUNT &&
628 (cmds[buttons[i].cmd].mode < 0 || cmds[buttons[i].cmd].mode == mode))
629 {
630 if (cmds[buttons[i].cmd].func(buttons[i].arg))
631 dirty = true;
632 }
633 }
634 if (dirty)
635 redraw();
636 } else {
637 /* thumbnail mode (hard-coded) */
638 switch (bev->button) {
639 case Button1:
640 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
641 if (sel != fileidx) {
642 tns_highlight(&tns, fileidx, false);
643 tns_highlight(&tns, sel, true);
644 fileidx = sel;
645 firstclick = bev->time;
646 redraw();
647 } else if (bev->time - firstclick <= TO_DOUBLE_CLICK) {
648 mode = MODE_IMAGE;
649 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
650 load_image(fileidx);
651 redraw();
652 } else {
653 firstclick = bev->time;
654 }
655 }
656 break;
657 case Button3:
658 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
659 bool on = !(files[sel].flags & FF_MARK);
660 XEvent e;
661
662 for (;;) {
663 if (sel >= 0 && mark_image(sel, on))
664 redraw();
665 XMaskEvent(win.env.dpy,
666 ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
667 if (e.type == ButtonPress || e.type == ButtonRelease)
668 break;
669 while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
670 sel = tns_translate(&tns, e.xbutton.x, e.xbutton.y);
671 }
672 }
673 break;
674 case Button4:
675 case Button5:
676 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN,
677 (bev->state & ControlMask) != 0))
678 redraw();
679 break;
680 }
681 }
682 prefix = 0;
683}
684
685const struct timespec ten_ms = {0, 10000000};
686
687void run(void)
688{
689 int xfd;
690 fd_set fds;
691 struct timeval timeout;
692 bool discard, init_thumb, load_thumb, to_set;
693 XEvent ev, nextev;
694
695 while (true) {
696 to_set = check_timeouts(&timeout);
697 init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
698 load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
699
700 if ((init_thumb || load_thumb || to_set || info.fd != -1 ||
701 arl.fd != -1) && XPending(win.env.dpy) == 0)
702 {
703 if (load_thumb) {
704 set_timeout(redraw, TO_REDRAW_THUMBS, false);
705 if (!tns_load(&tns, tns.loadnext, false, false)) {
706 remove_file(tns.loadnext, false);
707 tns.dirty = true;
708 }
709 if (tns.loadnext >= tns.end)
710 redraw();
711 } else if (init_thumb) {
712 set_timeout(redraw, TO_REDRAW_THUMBS, false);
713 if (!tns_load(&tns, tns.initnext, false, true))
714 remove_file(tns.initnext, false);
715 } else {
716 xfd = ConnectionNumber(win.env.dpy);
717 FD_ZERO(&fds);
718 FD_SET(xfd, &fds);
719 if (info.fd != -1) {
720 FD_SET(info.fd, &fds);
721 xfd = MAX(xfd, info.fd);
722 }
723 if (arl.fd != -1) {
724 FD_SET(arl.fd, &fds);
725 xfd = MAX(xfd, arl.fd);
726 }
727 select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
728 if (info.fd != -1 && FD_ISSET(info.fd, &fds))
729 read_info();
730 if (arl.fd != -1 && FD_ISSET(arl.fd, &fds)) {
731 if (arl_handle(&arl)) {
732 /* when too fast, imlib2 can't load the image */
733 nanosleep(&ten_ms, NULL);
734 img_close(&img, true);
735 load_image(fileidx);
736 redraw();
737 }
738 }
739 }
740 continue;
741 }
742
743 do {
744 XNextEvent(win.env.dpy, &ev);
745 discard = false;
746 if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
747 XPeekEvent(win.env.dpy, &nextev);
748 switch (ev.type) {
749 case ConfigureNotify:
750 case MotionNotify:
751 discard = ev.type == nextev.type;
752 break;
753 case KeyPress:
754 discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
755 && ev.xkey.keycode == nextev.xkey.keycode;
756 break;
757 }
758 }
759 } while (discard);
760
761 switch (ev.type) {
762 /* handle events */
763 case ButtonPress:
764 on_buttonpress(&ev.xbutton);
765 break;
766 case ClientMessage:
767 if ((Atom) ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
768 cmds[g_quit].func(0);
769 break;
770 case DestroyNotify:
771 exit(EXIT_FAILURE);
772 break;
773 case ConfigureNotify:
774 if (win_configure(&win, &ev.xconfigure)) {
775 if (mode == MODE_IMAGE) {
776 img.dirty = true;
777 img.checkpan = true;
778 } else {
779 tns.dirty = true;
780 }
781 if (!resized) {
782 redraw();
783 set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
784 resized = true;
785 } else {
786 set_timeout(redraw, TO_REDRAW_RESIZE, false);
787 }
788 }
789 break;
790 case KeyPress:
791 on_keypress(&ev.xkey);
792 break;
793 case MotionNotify:
794 if (mode == MODE_IMAGE) {
795 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
796 reset_cursor();
797 }
798 break;
799 }
800 }
801}
802
803int fncmp(const void *a, const void *b)
804{
805 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
806}
807
808void sigchld(int sig)
809{
810 while (waitpid(-1, NULL, WNOHANG) > 0);
811}
812
813void setup_signal(int sig, void (*handler)(int sig))
814{
815 struct sigaction sa;
816
817 sa.sa_handler = handler;
818 sigemptyset(&sa.sa_mask);
819 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
820 if (sigaction(sig, &sa, 0) == -1)
821 error(EXIT_FAILURE, errno, "signal %d", sig);
822}
823
824int main(int argc, char **argv)
825{
826 int i, start;
827 size_t n;
828 ssize_t len;
829 char *filename;
830 const char *homedir, *dsuffix = "";
831 struct stat fstats;
832 r_dir_t dir;
833
834 setup_signal(SIGCHLD, sigchld);
835 setup_signal(SIGPIPE, SIG_IGN);
836
837 setlocale(LC_COLLATE, "");
838
839 parse_options(argc, argv);
840
841 if (options->clean_cache) {
842 tns_init(&tns, NULL, NULL, NULL, NULL);
843 tns_clean_cache(&tns);
844 exit(EXIT_SUCCESS);
845 }
846
847 if (options->filecnt == 0 && !options->from_stdin) {
848 print_usage();
849 exit(EXIT_FAILURE);
850 }
851
852 if (options->recursive || options->from_stdin)
853 filecnt = 1024;
854 else
855 filecnt = options->filecnt;
856
857 files = emalloc(filecnt * sizeof(*files));
858 memset(files, 0, filecnt * sizeof(*files));
859 fileidx = 0;
860
861 if (options->from_stdin) {
862 n = 0;
863 filename = NULL;
864 while ((len = getline(&filename, &n, stdin)) > 0) {
865 if (filename[len-1] == '\n')
866 filename[len-1] = '\0';
867 check_add_file(filename, true);
868 }
869 free(filename);
870 }
871
872 for (i = 0; i < options->filecnt; i++) {
873 filename = options->filenames[i];
874
875 if (stat(filename, &fstats) < 0) {
876 error(0, errno, "%s", filename);
877 continue;
878 }
879 if (!S_ISDIR(fstats.st_mode)) {
880 check_add_file(filename, true);
881 } else {
882 if (r_opendir(&dir, filename, options->recursive) < 0) {
883 error(0, errno, "%s", filename);
884 continue;
885 }
886 start = fileidx;
887 while ((filename = r_readdir(&dir, true)) != NULL) {
888 check_add_file(filename, false);
889 free((void*) filename);
890 }
891 r_closedir(&dir);
892 if (fileidx - start > 1)
893 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
894 }
895 }
896
897 if (fileidx == 0)
898 error(EXIT_FAILURE, 0, "No valid image file given, aborting");
899
900 filecnt = fileidx;
901 fileidx = options->startnum < filecnt ? options->startnum : 0;
902
903 for (i = 0; i < ARRLEN(buttons); i++) {
904 if (buttons[i].cmd == i_cursor_navigate) {
905 imgcursor[0] = CURSOR_LEFT;
906 imgcursor[2] = CURSOR_RIGHT;
907 break;
908 }
909 }
910
911 win_init(&win);
912 img_init(&img, &win);
913 arl_init(&arl);
914
915 if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
916 homedir = getenv("HOME");
917 dsuffix = "/.config";
918 }
919 if (homedir != NULL) {
920 extcmd_t *cmd[] = { &info.f, &keyhandler.f };
921 const char *name[] = { "image-info", "key-handler" };
922 const char *s = "/nsxiv/exec/";
923
924 for (i = 0; i < ARRLEN(cmd); i++) {
925 n = strlen(homedir) + strlen(dsuffix) + strlen(name[i]) + strlen(s) + 1;
926 cmd[i]->cmd = (char*) emalloc(n);
927 snprintf(cmd[i]->cmd, n, "%s%s%s%s", homedir, dsuffix, s, name[i]);
928 if (access(cmd[i]->cmd, X_OK) != 0)
929 cmd[i]->err = errno;
930 }
931 } else {
932 error(0, 0, "Exec directory not found");
933 }
934 info.fd = -1;
935
936 if (options->thumb_mode) {
937 mode = MODE_THUMB;
938 tns_init(&tns, files, &filecnt, &fileidx, &win);
939 while (!tns_load(&tns, fileidx, false, false))
940 remove_file(fileidx, false);
941 } else {
942 mode = MODE_IMAGE;
943 tns.thumbs = NULL;
944 load_image(fileidx);
945 }
946 win_open(&win);
947 win_set_title(&win, files[fileidx].path);
948 win_set_cursor(&win, CURSOR_WATCH);
949
950 atexit(cleanup);
951
952 set_timeout(redraw, 25, false);
953
954 run();
955
956 return 0;
957}