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nsxivmain.c

664 lines · 13.3 KB · C

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1/* sxiv: main.c
2 * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
17 */
18
19#include <stdlib.h>
20#include <stdio.h>
21#include <string.h>
22#include <dirent.h>
23#include <sys/select.h>
24#include <sys/stat.h>
25#include <sys/time.h>
26
27#include <X11/Xlib.h>
28#include <X11/Xutil.h>
29#include <X11/keysym.h>
30
31#include "image.h"
32#include "options.h"
33#include "thumbs.h"
34#include "util.h"
35#include "window.h"
36
37typedef enum appmode_e {
38 MODE_NORMAL = 0,
39 MODE_THUMBS
40} appmode_t;
41
42void update_title();
43int check_append(const char*);
44void read_dir_rec(const char*);
45void run();
46
47appmode_t mode;
48img_t img;
49tns_t tns;
50win_t win;
51
52#define DNAME_CNT 512
53#define FNAME_CNT 1024
54const char **filenames;
55int filecnt, fileidx;
56size_t filesize;
57
58#define TITLE_LEN 256
59char win_title[TITLE_LEN];
60
61void cleanup() {
62 static int in = 0;
63
64 if (!in++) {
65 img_free(&img);
66 tns_free(&tns, &win);
67 win_close(&win);
68 }
69}
70
71int load_image() {
72 struct stat fstats;
73
74 if (!stat(filenames[fileidx], &fstats))
75 filesize = fstats.st_size;
76 else
77 filesize = 0;
78
79 return img_load(&img, filenames[fileidx]);
80}
81
82int main(int argc, char **argv) {
83 int i;
84 const char *filename;
85 struct stat fstats;
86
87 parse_options(argc, argv);
88
89 if (!options->filecnt) {
90 print_usage();
91 exit(1);
92 }
93
94 if (options->recursive || options->from_stdin)
95 filecnt = FNAME_CNT;
96 else
97 filecnt = options->filecnt;
98
99 filenames = (const char**) s_malloc(filecnt * sizeof(const char*));
100 fileidx = 0;
101
102 if (options->from_stdin) {
103 while ((filename = readline(stdin))) {
104 if (!*filename || !check_append(filename))
105 free((void*) filename);
106 }
107 } else {
108 for (i = 0; i < options->filecnt; ++i) {
109 filename = options->filenames[i];
110 if (!stat(filename, &fstats) && S_ISDIR(fstats.st_mode)) {
111 if (options->recursive)
112 read_dir_rec(filename);
113 else
114 warn("ignoring directory: %s", filename);
115 } else {
116 check_append(filename);
117 }
118 }
119 }
120
121 filecnt = fileidx;
122 fileidx = 0;
123
124 if (!filecnt) {
125 fprintf(stderr, "sxiv: no valid image filename given, aborting\n");
126 exit(1);
127 }
128
129 win_open(&win);
130 img_init(&img, &win);
131
132 if (options->thumbnails) {
133 mode = MODE_THUMBS;
134 tns_init(&tns, filecnt);
135 win_clear(&win);
136 win_draw(&win);
137 } else {
138 mode = MODE_NORMAL;
139 tns.thumbs = NULL;
140 load_image();
141 img_render(&img, &win);
142 }
143
144 update_title();
145 run();
146 cleanup();
147
148 return 0;
149}
150
151void update_title() {
152 int n;
153 float size;
154 const char *unit;
155
156 if (mode == MODE_THUMBS) {
157 n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
158 tns.cnt ? tns.sel + 1 : 0, tns.cnt,
159 tns.cnt ? filenames[tns.sel] : "");
160 } else {
161 if (img.valid) {
162 size = filesize;
163 size_readable(&size, &unit);
164 n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> (%.2f%s) %s",
165 fileidx + 1, filecnt, (int) (img.zoom * 100.0), size, unit,
166 filenames[fileidx]);
167 } else {
168 n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] broken: %s",
169 fileidx + 1, filecnt, filenames[fileidx]);
170 }
171 }
172
173 if (n >= TITLE_LEN) {
174 win_title[TITLE_LEN - 2] = '.';
175 win_title[TITLE_LEN - 3] = '.';
176 win_title[TITLE_LEN - 4] = '.';
177 }
178
179 win_set_title(&win, win_title);
180}
181
182int check_append(const char *filename) {
183 if (!filename)
184 return 0;
185
186 if (img_check(filename)) {
187 if (fileidx == filecnt) {
188 filecnt *= 2;
189 filenames = (const char**) s_realloc(filenames,
190 filecnt * sizeof(const char*));
191 }
192 filenames[fileidx++] = filename;
193 return 1;
194 } else {
195 return 0;
196 }
197}
198
199void read_dir_rec(const char *dirname) {
200 char *filename;
201 const char **dirnames;
202 int dircnt, diridx;
203 unsigned char first;
204 size_t len;
205 DIR *dir;
206 struct dirent *dentry;
207 struct stat fstats;
208
209 if (!dirname)
210 return;
211
212 dircnt = DNAME_CNT;
213 diridx = first = 1;
214 dirnames = (const char**) s_malloc(dircnt * sizeof(const char*));
215 dirnames[0] = dirname;
216
217 while (diridx > 0) {
218 dirname = dirnames[--diridx];
219 if (!(dir = opendir(dirname))) {
220 warn("could not open directory: %s", dirname);
221 } else {
222 while ((dentry = readdir(dir))) {
223 if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
224 continue;
225
226 len = strlen(dirname) + strlen(dentry->d_name) + 2;
227 filename = (char*) s_malloc(len * sizeof(char));
228 snprintf(filename, len, "%s/%s", dirname, dentry->d_name);
229
230 if (!stat(filename, &fstats) && S_ISDIR(fstats.st_mode)) {
231 if (diridx == dircnt) {
232 dircnt *= 2;
233 dirnames = (const char**) s_realloc(dirnames,
234 dircnt * sizeof(const char*));
235 }
236 dirnames[diridx++] = filename;
237 } else {
238 if (!check_append(filename))
239 free(filename);
240 }
241 }
242 closedir(dir);
243 }
244
245 if (!first)
246 free((void*) dirname);
247 else
248 first = 0;
249 }
250
251 free(dirnames);
252}
253
254
255/* event handling */
256
257int timeout;
258unsigned char hidecur;
259
260int mox, moy;
261unsigned char drag;
262
263void redraw() {
264 if (mode == MODE_NORMAL) {
265 if (!drag && hidecur) {
266 win_set_cursor(&win, CURSOR_NONE);
267 hidecur = 0;
268 }
269 img_render(&img, &win);
270 } else {
271 tns_render(&tns, &win);
272 }
273 update_title();
274 timeout = 0;
275}
276
277void on_keypress(XKeyEvent *kev) {
278 int x, y;
279 unsigned int w, h;
280 char key;
281 KeySym ksym;
282 int changed;
283
284 if (!kev)
285 return;
286
287 XLookupString(kev, &key, 1, &ksym, NULL);
288 changed = 0;
289
290 if (mode == MODE_NORMAL) {
291 switch (ksym) {
292 /* navigate image list */
293 case XK_n:
294 case XK_space:
295 if (fileidx + 1 < filecnt) {
296 ++fileidx;
297 changed = load_image();
298 }
299 break;
300 case XK_p:
301 case XK_BackSpace:
302 if (fileidx > 0) {
303 --fileidx;
304 changed = load_image();
305 }
306 break;
307 case XK_bracketleft:
308 if (fileidx != 0) {
309 fileidx = MAX(0, fileidx - 10);
310 changed = load_image();
311 }
312 break;
313 case XK_bracketright:
314 if (fileidx != filecnt - 1) {
315 fileidx = MIN(fileidx + 10, filecnt - 1);
316 changed = load_image();
317 }
318 break;
319 case XK_g:
320 if (fileidx != 0) {
321 fileidx = 0;
322 changed = load_image();
323 }
324 break;
325 case XK_G:
326 if (fileidx != filecnt - 1) {
327 fileidx = filecnt - 1;
328 changed = load_image();
329 }
330 break;
331
332 /* zooming */
333 case XK_plus:
334 case XK_equal:
335 changed = img_zoom_in(&img);
336 break;
337 case XK_minus:
338 changed = img_zoom_out(&img);
339 break;
340 case XK_0:
341 changed = img_zoom(&img, 1.0);
342 break;
343 case XK_w:
344 if ((changed = img_fit_win(&img, &win)))
345 img_center(&img, &win);
346 break;
347
348 /* panning */
349 case XK_h:
350 case XK_Left:
351 changed = img_pan(&img, &win, PAN_LEFT);
352 break;
353 case XK_j:
354 case XK_Down:
355 changed = img_pan(&img, &win, PAN_DOWN);
356 break;
357 case XK_k:
358 case XK_Up:
359 changed = img_pan(&img, &win, PAN_UP);
360 break;
361 case XK_l:
362 case XK_Right:
363 changed = img_pan(&img, &win, PAN_RIGHT);
364 break;
365
366 /* rotation */
367 case XK_less:
368 img_rotate_left(&img, &win);
369 changed = 1;
370 break;
371 case XK_greater:
372 img_rotate_right(&img, &win);
373 changed = 1;
374 break;
375
376 /* control window */
377 case XK_W:
378 x = MAX(0, win.x + img.x);
379 y = MAX(0, win.y + img.y);
380 w = img.w * img.zoom;
381 h = img.h * img.zoom;
382 if ((changed = win_moveresize(&win, x, y, w, h))) {
383 img.x = x - win.x;
384 img.y = y - win.y;
385 }
386 break;
387
388 /* switch to thumbnail mode */
389 case XK_Return:
390 if (!tns.thumbs)
391 tns_init(&tns, filecnt);
392 mode = MODE_THUMBS;
393 win_set_cursor(&win, CURSOR_ARROW);
394 hidecur = 0;
395 tns.sel = fileidx;
396 changed = tns.dirty = 1;
397 break;
398
399 /* miscellaneous */
400 case XK_a:
401 img_toggle_antialias(&img);
402 changed = 1;
403 break;
404 case XK_r:
405 changed = load_image();
406 break;
407 }
408 } else {
409 /* thumbnail mode */
410 switch (ksym) {
411 /* open selected image */
412 case XK_Return:
413 fileidx = tns.sel;
414 load_image();
415 mode = MODE_NORMAL;
416 win_set_cursor(&win, CURSOR_NONE);
417 changed = 1;
418 break;
419
420 /* move selection */
421 case XK_h:
422 case XK_Left:
423 changed = tns_move_selection(&tns, &win, TNS_LEFT);
424 break;
425 case XK_j:
426 case XK_Down:
427 changed = tns_move_selection(&tns, &win, TNS_DOWN);
428 break;
429 case XK_k:
430 case XK_Up:
431 changed = tns_move_selection(&tns, &win, TNS_UP);
432 break;
433 case XK_l:
434 case XK_Right:
435 changed = tns_move_selection(&tns, &win, TNS_RIGHT);
436 break;
437 case XK_g:
438 if (tns.sel != 0) {
439 tns.sel = 0;
440 changed = tns.dirty = 1;
441 }
442 break;
443 case XK_G:
444 if (tns.sel != tns.cnt - 1) {
445 tns.sel = tns.cnt - 1;
446 changed = tns.dirty = 1;
447 }
448 }
449 }
450
451 /* common key mappings */
452 switch (ksym) {
453 case XK_Escape:
454 cleanup();
455 exit(2);
456 case XK_q:
457 cleanup();
458 exit(0);
459
460 case XK_f:
461 win_toggle_fullscreen(&win);
462 /* render on next configurenotify */
463 break;
464 }
465
466 if (changed)
467 redraw();
468}
469
470void on_buttonpress(XButtonEvent *bev) {
471 int changed, sel;
472 unsigned int mask;
473
474 if (!bev)
475 return;
476
477 mask = CLEANMASK(bev->state);
478 changed = 0;
479
480 if (mode == MODE_NORMAL) {
481 switch (bev->button) {
482 case Button1:
483 if (fileidx + 1 < filecnt) {
484 ++fileidx;
485 changed = load_image();
486 }
487 break;
488 case Button2:
489 mox = bev->x;
490 moy = bev->y;
491 win_set_cursor(&win, CURSOR_HAND);
492 hidecur = 0;
493 drag = 1;
494 break;
495 case Button3:
496 if (fileidx > 0) {
497 --fileidx;
498 changed = load_image();
499 }
500 break;
501 case Button4:
502 if (mask == ControlMask)
503 changed = img_zoom_in(&img);
504 else if (mask == ShiftMask)
505 changed = img_pan(&img, &win, PAN_LEFT);
506 else
507 changed = img_pan(&img, &win, PAN_UP);
508 break;
509 case Button5:
510 if (mask == ControlMask)
511 changed = img_zoom_out(&img);
512 else if (mask == ShiftMask)
513 changed = img_pan(&img, &win, PAN_RIGHT);
514 else
515 changed = img_pan(&img, &win, PAN_DOWN);
516 break;
517 case 6:
518 changed = img_pan(&img, &win, PAN_LEFT);
519 break;
520 case 7:
521 changed = img_pan(&img, &win, PAN_RIGHT);
522 break;
523 }
524 } else {
525 /* thumbnail mode */
526 switch (bev->button) {
527 case Button1:
528 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
529 if (sel == tns.sel) {
530 fileidx = tns.sel;
531 load_image();
532 mode = MODE_NORMAL;
533 win_set_cursor(&win, CURSOR_NONE);
534 } else {
535 tns_highlight(&tns, &win, tns.sel, False);
536 tns_highlight(&tns, &win, sel, True);
537 tns.sel = sel;
538 }
539 changed = 1;
540 break;
541 }
542 break;
543 case Button4:
544 changed = tns_scroll(&tns, TNS_UP);
545 break;
546 case Button5:
547 changed = tns_scroll(&tns, TNS_DOWN);
548 break;
549 }
550 }
551
552 if (changed)
553 redraw();
554}
555
556void on_motionnotify(XMotionEvent *mev) {
557 if (!mev)
558 return;
559
560 if (mev->x >= 0 && mev->x <= win.w && mev->y >= 0 && mev->y <= win.h) {
561 if (img_move(&img, &win, mev->x - mox, mev->y - moy))
562 timeout = 1000;
563
564 mox = mev->x;
565 moy = mev->y;
566 }
567}
568
569void run() {
570 int xfd;
571 fd_set fds;
572 struct timeval t, t0;
573 XEvent ev;
574
575 drag = timeout = 0;
576
577 if (mode == MODE_NORMAL) {
578 hidecur = 1;
579 timeout = 1500000;
580 }
581
582 while (1) {
583 if (mode == MODE_THUMBS && tns.cnt < filecnt) {
584 win_set_cursor(&win, CURSOR_WATCH);
585 gettimeofday(&t0, 0);
586
587 while (!XPending(win.env.dpy) && tns.cnt < filecnt) {
588 tns_load(&tns, &win, filenames[tns.cnt]);
589 gettimeofday(&t, 0);
590 if (TV_TO_DOUBLE(t) - TV_TO_DOUBLE(t0) >= 0.25)
591 break;
592 }
593 if (tns.cnt == filecnt)
594 win_set_cursor(&win, CURSOR_ARROW);
595 if (!XPending(win.env.dpy)) {
596 redraw();
597 continue;
598 } else {
599 timeout = 75000;
600 }
601 } else if (timeout) {
602 t.tv_sec = timeout / 1000000;
603 t.tv_usec = timeout % 1000000;
604 xfd = ConnectionNumber(win.env.dpy);
605 FD_ZERO(&fds);
606 FD_SET(xfd, &fds);
607
608 if (!XPending(win.env.dpy) && !select(xfd + 1, &fds, 0, 0, &t)) {
609 /* timeout fired */
610 if (hidecur) {
611 win_set_cursor(&win, CURSOR_NONE);
612 hidecur = 0;
613 } else {
614 redraw();
615 }
616 }
617 }
618
619 if (!XNextEvent(win.env.dpy, &ev)) {
620 switch (ev.type) {
621 case KeyPress:
622 on_keypress(&ev.xkey);
623 break;
624 case ButtonPress:
625 on_buttonpress(&ev.xbutton);
626 break;
627 case ButtonRelease:
628 if (ev.xbutton.button == Button2) {
629 drag = 0;
630 if (mode == MODE_NORMAL) {
631 win_set_cursor(&win, CURSOR_ARROW);
632 hidecur = 1;
633 timeout = 1500000;
634 }
635 }
636 break;
637 case MotionNotify:
638 if (drag) {
639 on_motionnotify(&ev.xmotion);
640 } else if (mode == MODE_NORMAL) {
641 if (!hidecur) {
642 win_set_cursor(&win, CURSOR_ARROW);
643 hidecur = 1;
644 }
645 timeout = 1500000;
646 }
647 break;
648 case ConfigureNotify:
649 if (win_configure(&win, &ev.xconfigure)) {
650 timeout = 75000;
651 if (mode == MODE_NORMAL)
652 img.checkpan = 1;
653 else
654 tns.dirty = 1;
655 }
656 break;
657 case ClientMessage:
658 if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
659 return;
660 break;
661 }
662 }
663 }
664}