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nsxivmain.c

627 lines · 12.6 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;
258int mox, moy;
259
260void redraw() {
261 if (mode == MODE_NORMAL)
262 img_render(&img, &win);
263 else
264 tns_render(&tns, &win);
265 update_title();
266 timeout = 0;
267}
268
269void on_keypress(XKeyEvent *kev) {
270 int x, y;
271 unsigned int w, h;
272 char key;
273 KeySym ksym;
274 int changed;
275
276 if (!kev)
277 return;
278
279 XLookupString(kev, &key, 1, &ksym, NULL);
280 changed = 0;
281
282 if (mode == MODE_NORMAL) {
283 switch (ksym) {
284 /* navigate image list */
285 case XK_n:
286 case XK_space:
287 if (fileidx + 1 < filecnt) {
288 ++fileidx;
289 changed = load_image();
290 }
291 break;
292 case XK_p:
293 case XK_BackSpace:
294 if (fileidx > 0) {
295 --fileidx;
296 changed = load_image();
297 }
298 break;
299 case XK_bracketleft:
300 if (fileidx != 0) {
301 fileidx = MAX(0, fileidx - 10);
302 changed = load_image();
303 }
304 break;
305 case XK_bracketright:
306 if (fileidx != filecnt - 1) {
307 fileidx = MIN(fileidx + 10, filecnt - 1);
308 changed = load_image();
309 }
310 break;
311 case XK_g:
312 if (fileidx != 0) {
313 fileidx = 0;
314 changed = load_image();
315 }
316 break;
317 case XK_G:
318 if (fileidx != filecnt - 1) {
319 fileidx = filecnt - 1;
320 changed = load_image();
321 }
322 break;
323
324 /* zooming */
325 case XK_plus:
326 case XK_equal:
327 changed = img_zoom_in(&img);
328 break;
329 case XK_minus:
330 changed = img_zoom_out(&img);
331 break;
332 case XK_0:
333 changed = img_zoom(&img, 1.0);
334 break;
335 case XK_w:
336 if ((changed = img_fit_win(&img, &win)))
337 img_center(&img, &win);
338 break;
339
340 /* panning */
341 case XK_h:
342 case XK_Left:
343 changed = img_pan(&img, &win, PAN_LEFT);
344 break;
345 case XK_j:
346 case XK_Down:
347 changed = img_pan(&img, &win, PAN_DOWN);
348 break;
349 case XK_k:
350 case XK_Up:
351 changed = img_pan(&img, &win, PAN_UP);
352 break;
353 case XK_l:
354 case XK_Right:
355 changed = img_pan(&img, &win, PAN_RIGHT);
356 break;
357
358 /* rotation */
359 case XK_less:
360 img_rotate_left(&img, &win);
361 changed = 1;
362 break;
363 case XK_greater:
364 img_rotate_right(&img, &win);
365 changed = 1;
366 break;
367
368 /* control window */
369 case XK_W:
370 x = MAX(0, win.x + img.x);
371 y = MAX(0, win.y + img.y);
372 w = img.w * img.zoom;
373 h = img.h * img.zoom;
374 if ((changed = win_moveresize(&win, x, y, w, h))) {
375 img.x = x - win.x;
376 img.y = y - win.y;
377 }
378 break;
379
380 /* switch to thumnail mode */
381 case XK_Return:
382 if (!tns.thumbs)
383 tns_init(&tns, filecnt);
384 mode = MODE_THUMBS;
385 tns.sel = fileidx;
386 changed = tns.dirty = 1;
387 break;
388
389 /* miscellaneous */
390 case XK_a:
391 img_toggle_antialias(&img);
392 changed = 1;
393 break;
394 case XK_r:
395 changed = load_image();
396 break;
397 }
398 } else {
399 /* thumbnail mode */
400 switch (ksym) {
401 /* open selected image */
402 case XK_Return:
403 fileidx = tns.sel;
404 load_image();
405 mode = MODE_NORMAL;
406 win_set_cursor(&win, CURSOR_ARROW);
407 changed = 1;
408 break;
409
410 /* move selection */
411 case XK_h:
412 case XK_Left:
413 changed = tns_move_selection(&tns, &win, TNS_LEFT);
414 break;
415 case XK_j:
416 case XK_Down:
417 changed = tns_move_selection(&tns, &win, TNS_DOWN);
418 break;
419 case XK_k:
420 case XK_Up:
421 changed = tns_move_selection(&tns, &win, TNS_UP);
422 break;
423 case XK_l:
424 case XK_Right:
425 changed = tns_move_selection(&tns, &win, TNS_RIGHT);
426 break;
427 case XK_g:
428 if (tns.sel != 0) {
429 tns.sel = 0;
430 changed = tns.dirty = 1;
431 }
432 break;
433 case XK_G:
434 if (tns.sel != tns.cnt - 1) {
435 tns.sel = tns.cnt - 1;
436 changed = tns.dirty = 1;
437 }
438 }
439 }
440
441 /* common key mappings */
442 switch (ksym) {
443 case XK_Escape:
444 cleanup();
445 exit(2);
446 case XK_q:
447 cleanup();
448 exit(0);
449
450 case XK_f:
451 win_toggle_fullscreen(&win);
452 /* render on next configurenotify */
453 break;
454 }
455
456 if (changed)
457 redraw();
458}
459
460void on_buttonpress(XButtonEvent *bev) {
461 int changed, sel;
462 unsigned int mask;
463
464 if (!bev)
465 return;
466
467 mask = CLEANMASK(bev->state);
468 changed = 0;
469
470 if (mode == MODE_NORMAL) {
471 switch (bev->button) {
472 case Button1:
473 if (fileidx + 1 < filecnt) {
474 ++fileidx;
475 changed = load_image();
476 }
477 break;
478 case Button2:
479 mox = bev->x;
480 moy = bev->y;
481 win_set_cursor(&win, CURSOR_HAND);
482 break;
483 case Button3:
484 if (fileidx > 0) {
485 --fileidx;
486 changed = load_image();
487 }
488 break;
489 case Button4:
490 if (mask == ControlMask)
491 changed = img_zoom_in(&img);
492 else if (mask == ShiftMask)
493 changed = img_pan(&img, &win, PAN_LEFT);
494 else
495 changed = img_pan(&img, &win, PAN_UP);
496 break;
497 case Button5:
498 if (mask == ControlMask)
499 changed = img_zoom_out(&img);
500 else if (mask == ShiftMask)
501 changed = img_pan(&img, &win, PAN_RIGHT);
502 else
503 changed = img_pan(&img, &win, PAN_DOWN);
504 break;
505 case 6:
506 changed = img_pan(&img, &win, PAN_LEFT);
507 break;
508 case 7:
509 changed = img_pan(&img, &win, PAN_RIGHT);
510 break;
511 }
512 } else {
513 /* thumbnail mode */
514 switch (bev->button) {
515 case Button1:
516 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
517 if (sel == tns.sel) {
518 fileidx = tns.sel;
519 load_image();
520 mode = MODE_NORMAL;
521 win_set_cursor(&win, CURSOR_ARROW);
522 } else {
523 tns_highlight(&tns, &win, tns.sel, False);
524 tns_highlight(&tns, &win, sel, True);
525 tns.sel = sel;
526 }
527 changed = 1;
528 break;
529 }
530 break;
531 case Button4:
532 changed = tns_scroll(&tns, TNS_UP);
533 break;
534 case Button5:
535 changed = tns_scroll(&tns, TNS_DOWN);
536 break;
537 }
538 }
539
540 if (changed)
541 redraw();
542}
543
544void on_motionnotify(XMotionEvent *mev) {
545 if (!mev || mode != MODE_NORMAL)
546 return;
547
548 if (mev->x >= 0 && mev->x <= win.w && mev->y >= 0 && mev->y <= win.h) {
549 if (img_move(&img, &win, mev->x - mox, mev->y - moy))
550 timeout = 1000;
551
552 mox = mev->x;
553 moy = mev->y;
554 }
555}
556
557void run() {
558 int xfd;
559 fd_set fds;
560 struct timeval t, t0;
561 XEvent ev;
562
563 timeout = 0;
564
565 while (1) {
566 if (mode == MODE_THUMBS && tns.cnt < filecnt) {
567 win_set_cursor(&win, CURSOR_WATCH);
568 gettimeofday(&t0, 0);
569
570 while (!XPending(win.env.dpy) && tns.cnt < filecnt) {
571 tns_load(&tns, &win, filenames[tns.cnt]);
572 gettimeofday(&t, 0);
573 if (TV_TO_DOUBLE(t) - TV_TO_DOUBLE(t0) >= 0.25)
574 break;
575 }
576 if (tns.cnt == filecnt)
577 win_set_cursor(&win, CURSOR_ARROW);
578 if (!XPending(win.env.dpy)) {
579 redraw();
580 continue;
581 } else {
582 timeout = 75000;
583 }
584 } else if (timeout) {
585 t.tv_sec = 0;
586 t.tv_usec = timeout;
587 xfd = ConnectionNumber(win.env.dpy);
588 FD_ZERO(&fds);
589 FD_SET(xfd, &fds);
590
591 if (!XPending(win.env.dpy) && !select(xfd + 1, &fds, 0, 0, &t))
592 /* timeout fired */
593 redraw();
594 }
595
596 if (!XNextEvent(win.env.dpy, &ev)) {
597 switch (ev.type) {
598 case KeyPress:
599 on_keypress(&ev.xkey);
600 break;
601 case ButtonPress:
602 on_buttonpress(&ev.xbutton);
603 break;
604 case ButtonRelease:
605 if (ev.xbutton.button == Button2)
606 win_set_cursor(&win, CURSOR_ARROW);
607 break;
608 case MotionNotify:
609 on_motionnotify(&ev.xmotion);
610 break;
611 case ConfigureNotify:
612 if (win_configure(&win, &ev.xconfigure)) {
613 timeout = 75000;
614 if (mode == MODE_NORMAL)
615 img.checkpan = 1;
616 else
617 tns.dirty = 1;
618 }
619 break;
620 case ClientMessage:
621 if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
622 return;
623 break;
624 }
625 }
626 }
627}