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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 handle_key_handler(bool init)
473{
474 extprefix = init;
475 if (win.bar.h == 0)
476 return;
477 if (init) {
478 close_info();
479 snprintf(win.bar.l.buf, win.bar.l.size, "Getting key handler input "
480 "(%s to abort)...", XKeysymToString(keyhandler_abort));
481 } else { /* abort */
482 open_info();
483 update_info();
484 }
485 win_draw(&win);
486}
487
488void run_key_handler(const char *key, unsigned int mask)
489{
490 pid_t pid;
491 FILE *pfs;
492 bool marked = mode == MODE_THUMB && markcnt > 0;
493 bool changed = false;
494 int f, i, pfd[2];
495 int fcnt = marked ? markcnt : 1;
496 char kstr[32];
497 struct stat *oldst, st;
498 XEvent dump;
499
500 if (keyhandler.f.err != 0) {
501 if (!keyhandler.warned) {
502 error(0, keyhandler.f.err, "%s", keyhandler.f.cmd);
503 keyhandler.warned = true;
504 }
505 return;
506 }
507 if (key == NULL)
508 return;
509
510 if (pipe(pfd) < 0) {
511 error(0, errno, "pipe");
512 return;
513 }
514 if ((pfs = fdopen(pfd[1], "w")) == NULL) {
515 error(0, errno, "open pipe");
516 close(pfd[0]), close(pfd[1]);
517 return;
518 }
519 oldst = emalloc(fcnt * sizeof(*oldst));
520
521 close_info();
522 strncpy(win.bar.l.buf, "Running key handler...", win.bar.l.size);
523 win_draw(&win);
524 win_set_cursor(&win, CURSOR_WATCH);
525
526 snprintf(kstr, sizeof(kstr), "%s%s%s%s",
527 mask & ControlMask ? "C-" : "",
528 mask & Mod1Mask ? "M-" : "",
529 mask & ShiftMask ? "S-" : "", key);
530
531 if ((pid = fork()) == 0) {
532 close(pfd[1]);
533 dup2(pfd[0], 0);
534 execl(keyhandler.f.cmd, keyhandler.f.cmd, kstr, NULL);
535 error(EXIT_FAILURE, errno, "exec: %s", keyhandler.f.cmd);
536 }
537 close(pfd[0]);
538 if (pid < 0) {
539 error(0, errno, "fork");
540 fclose(pfs);
541 goto end;
542 }
543
544 for (f = i = 0; f < fcnt; i++) {
545 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
546 stat(files[i].path, &oldst[f]);
547 fprintf(pfs, "%s\n", files[i].name);
548 f++;
549 }
550 }
551 fclose(pfs);
552 while (waitpid(pid, NULL, 0) == -1 && errno == EINTR);
553
554 for (f = i = 0; f < fcnt; i++) {
555 if ((marked && (files[i].flags & FF_MARK)) || (!marked && i == fileidx)) {
556 if (stat(files[i].path, &st) != 0 ||
557 memcmp(&oldst[f].st_mtime, &st.st_mtime, sizeof(st.st_mtime)) != 0)
558 {
559 if (tns.thumbs != NULL) {
560 tns_unload(&tns, i);
561 tns.loadnext = MIN(tns.loadnext, i);
562 }
563 changed = true;
564 }
565 f++;
566 }
567 }
568 /* drop user input events that occurred while running the key handler */
569 while (XCheckIfEvent(win.env.dpy, &dump, is_input_ev, NULL));
570
571end:
572 if (mode == MODE_IMAGE) {
573 if (changed) {
574 img_close(&img, true);
575 load_image(fileidx);
576 } else {
577 open_info();
578 }
579 }
580 free(oldst);
581 reset_cursor();
582 redraw();
583}
584
585#define MODMASK(mask) ((mask) & ~ignore_mask)
586
587void on_keypress(XKeyEvent *kev)
588{
589 int i;
590 unsigned int sh = 0;
591 KeySym ksym, shksym;
592 char dummy, key;
593 bool dirty = false;
594
595 XLookupString(kev, &key, 1, &ksym, NULL);
596
597 if (kev->state & ShiftMask) {
598 kev->state &= ~ShiftMask;
599 XLookupString(kev, &dummy, 1, &shksym, NULL);
600 kev->state |= ShiftMask;
601 if (ksym != shksym)
602 sh = ShiftMask;
603 }
604 if (IsModifierKey(ksym))
605 return;
606 if (extprefix && ksym == keyhandler_abort && MODMASK(kev->state) == 0) {
607 handle_key_handler(false);
608 } else if (extprefix) {
609 run_key_handler(XKeysymToString(ksym), kev->state & ~sh);
610 extprefix = False;
611 } else if (key >= '0' && key <= '9') {
612 /* number prefix for commands */
613 prefix = prefix * 10 + (int) (key - '0');
614 return;
615 } else for (i = 0; i < ARRLEN(keys); i++) {
616 if (keys[i].ksym == ksym &&
617 MODMASK(keys[i].mask | sh) == MODMASK(kev->state) &&
618 keys[i].cmd >= 0 && keys[i].cmd < CMD_COUNT &&
619 (cmds[keys[i].cmd].mode < 0 || cmds[keys[i].cmd].mode == mode))
620 {
621 if (cmds[keys[i].cmd].func(keys[i].arg))
622 dirty = true;
623 }
624 }
625 if (dirty)
626 redraw();
627 prefix = 0;
628}
629
630void on_buttonpress(XButtonEvent *bev)
631{
632 int i, sel;
633 bool dirty = false;
634 static Time firstclick;
635
636 if (mode == MODE_IMAGE) {
637 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
638 reset_cursor();
639
640 for (i = 0; i < ARRLEN(buttons); i++) {
641 if (buttons[i].button == bev->button &&
642 MODMASK(buttons[i].mask) == MODMASK(bev->state) &&
643 buttons[i].cmd >= 0 && buttons[i].cmd < CMD_COUNT &&
644 (cmds[buttons[i].cmd].mode < 0 || cmds[buttons[i].cmd].mode == mode))
645 {
646 if (cmds[buttons[i].cmd].func(buttons[i].arg))
647 dirty = true;
648 }
649 }
650 if (dirty)
651 redraw();
652 } else {
653 /* thumbnail mode (hard-coded) */
654 switch (bev->button) {
655 case Button1:
656 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
657 if (sel != fileidx) {
658 tns_highlight(&tns, fileidx, false);
659 tns_highlight(&tns, sel, true);
660 fileidx = sel;
661 firstclick = bev->time;
662 redraw();
663 } else if (bev->time - firstclick <= TO_DOUBLE_CLICK) {
664 mode = MODE_IMAGE;
665 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
666 load_image(fileidx);
667 redraw();
668 } else {
669 firstclick = bev->time;
670 }
671 }
672 break;
673 case Button3:
674 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
675 bool on = !(files[sel].flags & FF_MARK);
676 XEvent e;
677
678 for (;;) {
679 if (sel >= 0 && mark_image(sel, on))
680 redraw();
681 XMaskEvent(win.env.dpy,
682 ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
683 if (e.type == ButtonPress || e.type == ButtonRelease)
684 break;
685 while (XCheckTypedEvent(win.env.dpy, MotionNotify, &e));
686 sel = tns_translate(&tns, e.xbutton.x, e.xbutton.y);
687 }
688 }
689 break;
690 case Button4:
691 case Button5:
692 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN,
693 (bev->state & ControlMask) != 0))
694 redraw();
695 break;
696 }
697 }
698 prefix = 0;
699}
700
701void run(void)
702{
703 int xfd;
704 fd_set fds;
705 struct timeval timeout;
706 const struct timespec ten_ms = {0, 10000000};
707 bool discard, init_thumb, load_thumb, to_set;
708 XEvent ev, nextev;
709
710 while (true) {
711 to_set = check_timeouts(&timeout);
712 init_thumb = mode == MODE_THUMB && tns.initnext < filecnt;
713 load_thumb = mode == MODE_THUMB && tns.loadnext < tns.end;
714
715 if ((init_thumb || load_thumb || to_set || info.fd != -1 ||
716 arl.fd != -1) && XPending(win.env.dpy) == 0)
717 {
718 if (load_thumb) {
719 set_timeout(redraw, TO_REDRAW_THUMBS, false);
720 if (!tns_load(&tns, tns.loadnext, false, false)) {
721 remove_file(tns.loadnext, false);
722 tns.dirty = true;
723 }
724 if (tns.loadnext >= tns.end)
725 redraw();
726 } else if (init_thumb) {
727 set_timeout(redraw, TO_REDRAW_THUMBS, false);
728 if (!tns_load(&tns, tns.initnext, false, true))
729 remove_file(tns.initnext, false);
730 } else {
731 xfd = ConnectionNumber(win.env.dpy);
732 FD_ZERO(&fds);
733 FD_SET(xfd, &fds);
734 if (info.fd != -1) {
735 FD_SET(info.fd, &fds);
736 xfd = MAX(xfd, info.fd);
737 }
738 if (arl.fd != -1) {
739 FD_SET(arl.fd, &fds);
740 xfd = MAX(xfd, arl.fd);
741 }
742 select(xfd + 1, &fds, 0, 0, to_set ? &timeout : NULL);
743 if (info.fd != -1 && FD_ISSET(info.fd, &fds))
744 read_info();
745 if (arl.fd != -1 && FD_ISSET(arl.fd, &fds)) {
746 if (arl_handle(&arl)) {
747 /* when too fast, imlib2 can't load the image */
748 nanosleep(&ten_ms, NULL);
749 img_close(&img, true);
750 load_image(fileidx);
751 redraw();
752 }
753 }
754 }
755 continue;
756 }
757
758 do {
759 XNextEvent(win.env.dpy, &ev);
760 discard = false;
761 if (XEventsQueued(win.env.dpy, QueuedAlready) > 0) {
762 XPeekEvent(win.env.dpy, &nextev);
763 switch (ev.type) {
764 case ConfigureNotify:
765 case MotionNotify:
766 discard = ev.type == nextev.type;
767 break;
768 case KeyPress:
769 discard = (nextev.type == KeyPress || nextev.type == KeyRelease)
770 && ev.xkey.keycode == nextev.xkey.keycode;
771 break;
772 }
773 }
774 } while (discard);
775
776 switch (ev.type) {
777 /* handle events */
778 case ButtonPress:
779 on_buttonpress(&ev.xbutton);
780 break;
781 case ClientMessage:
782 if ((Atom) ev.xclient.data.l[0] == atoms[ATOM_WM_DELETE_WINDOW])
783 cmds[g_quit].func(0);
784 break;
785 case DestroyNotify:
786 exit(EXIT_FAILURE);
787 break;
788 case ConfigureNotify:
789 if (win_configure(&win, &ev.xconfigure)) {
790 if (mode == MODE_IMAGE) {
791 img.dirty = true;
792 img.checkpan = true;
793 } else {
794 tns.dirty = true;
795 }
796 if (!resized) {
797 redraw();
798 set_timeout(clear_resize, TO_REDRAW_RESIZE, false);
799 resized = true;
800 } else {
801 set_timeout(redraw, TO_REDRAW_RESIZE, false);
802 }
803 }
804 break;
805 case KeyPress:
806 on_keypress(&ev.xkey);
807 break;
808 case MotionNotify:
809 if (mode == MODE_IMAGE) {
810 set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
811 reset_cursor();
812 }
813 break;
814 }
815 }
816}
817
818int fncmp(const void *a, const void *b)
819{
820 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
821}
822
823void sigchld(int sig)
824{
825 while (waitpid(-1, NULL, WNOHANG) > 0);
826}
827
828void setup_signal(int sig, void (*handler)(int sig))
829{
830 struct sigaction sa;
831
832 sa.sa_handler = handler;
833 sigemptyset(&sa.sa_mask);
834 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
835 if (sigaction(sig, &sa, 0) == -1)
836 error(EXIT_FAILURE, errno, "signal %d", sig);
837}
838
839int main(int argc, char **argv)
840{
841 int i, start;
842 size_t n;
843 ssize_t len;
844 char *filename;
845 const char *homedir, *dsuffix = "";
846 struct stat fstats;
847 r_dir_t dir;
848
849 setup_signal(SIGCHLD, sigchld);
850 setup_signal(SIGPIPE, SIG_IGN);
851
852 setlocale(LC_COLLATE, "");
853
854 parse_options(argc, argv);
855
856 if (options->clean_cache) {
857 tns_init(&tns, NULL, NULL, NULL, NULL);
858 tns_clean_cache(&tns);
859 exit(EXIT_SUCCESS);
860 }
861
862 if (options->filecnt == 0 && !options->from_stdin) {
863 print_usage();
864 exit(EXIT_FAILURE);
865 }
866
867 if (options->recursive || options->from_stdin)
868 filecnt = 1024;
869 else
870 filecnt = options->filecnt;
871
872 files = emalloc(filecnt * sizeof(*files));
873 memset(files, 0, filecnt * sizeof(*files));
874 fileidx = 0;
875
876 if (options->from_stdin) {
877 n = 0;
878 filename = NULL;
879 while ((len = getline(&filename, &n, stdin)) > 0) {
880 if (filename[len-1] == '\n')
881 filename[len-1] = '\0';
882 check_add_file(filename, true);
883 }
884 free(filename);
885 }
886
887 for (i = 0; i < options->filecnt; i++) {
888 filename = options->filenames[i];
889
890 if (stat(filename, &fstats) < 0) {
891 error(0, errno, "%s", filename);
892 continue;
893 }
894 if (!S_ISDIR(fstats.st_mode)) {
895 check_add_file(filename, true);
896 } else {
897 if (r_opendir(&dir, filename, options->recursive) < 0) {
898 error(0, errno, "%s", filename);
899 continue;
900 }
901 start = fileidx;
902 while ((filename = r_readdir(&dir, true)) != NULL) {
903 check_add_file(filename, false);
904 free((void*) filename);
905 }
906 r_closedir(&dir);
907 if (fileidx - start > 1)
908 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
909 }
910 }
911
912 if (fileidx == 0)
913 error(EXIT_FAILURE, 0, "No valid image file given, aborting");
914
915 filecnt = fileidx;
916 fileidx = options->startnum < filecnt ? options->startnum : 0;
917
918 for (i = 0; i < ARRLEN(buttons); i++) {
919 if (buttons[i].cmd == i_cursor_navigate) {
920 imgcursor[0] = CURSOR_LEFT;
921 imgcursor[2] = CURSOR_RIGHT;
922 break;
923 }
924 }
925
926 win_init(&win);
927 img_init(&img, &win);
928 arl_init(&arl);
929
930 if ((homedir = getenv("XDG_CONFIG_HOME")) == NULL || homedir[0] == '\0') {
931 homedir = getenv("HOME");
932 dsuffix = "/.config";
933 }
934 if (homedir != NULL) {
935 extcmd_t *cmd[] = { &info.f, &keyhandler.f };
936 const char *name[] = { "image-info", "key-handler" };
937 const char *s = "/nsxiv/exec/";
938
939 for (i = 0; i < ARRLEN(cmd); i++) {
940 n = strlen(homedir) + strlen(dsuffix) + strlen(name[i]) + strlen(s) + 1;
941 cmd[i]->cmd = (char*) emalloc(n);
942 snprintf(cmd[i]->cmd, n, "%s%s%s%s", homedir, dsuffix, s, name[i]);
943 if (access(cmd[i]->cmd, X_OK) != 0)
944 cmd[i]->err = errno;
945 }
946 } else {
947 error(0, 0, "Exec directory not found");
948 }
949 info.fd = -1;
950
951 if (options->thumb_mode) {
952 mode = MODE_THUMB;
953 tns_init(&tns, files, &filecnt, &fileidx, &win);
954 while (!tns_load(&tns, fileidx, false, false))
955 remove_file(fileidx, false);
956 } else {
957 mode = MODE_IMAGE;
958 tns.thumbs = NULL;
959 load_image(fileidx);
960 }
961 win_open(&win);
962 win_set_title(&win, files[fileidx].path);
963 win_set_cursor(&win, CURSOR_WATCH);
964
965 atexit(cleanup);
966
967 set_timeout(redraw, 25, false);
968
969 run();
970
971 return 0;
972}