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nsxivmain.c

525 lines · 11.0 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 it
5 * under the terms of the GNU General Public License as published by the
6 * Free Software Foundation; either version 2 of the License, or (at your
7 * option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
17 */
18
19#include <stdlib.h>
20#include <stdio.h>
21#include <string.h>
22#include <unistd.h>
23#include <sys/stat.h>
24#include <sys/time.h>
25#include <X11/Xutil.h>
26#include <X11/keysym.h>
27
28#include "commands.h"
29#include "image.h"
30#include "options.h"
31#include "thumbs.h"
32#include "types.h"
33#include "util.h"
34#include "window.h"
35
36#define _MAPPINGS_CONFIG
37#include "config.h"
38
39enum {
40 TITLE_LEN = 256,
41 FNAME_CNT = 1024
42};
43
44typedef struct {
45 struct timeval when;
46 Bool active;
47 timeout_f handler;
48} timeout_t;
49
50/* timeout handler functions: */
51void redraw();
52void reset_cursor();
53void animate();
54
55appmode_t mode;
56img_t img;
57tns_t tns;
58win_t win;
59
60fileinfo_t *files;
61int filecnt, fileidx;
62size_t filesize;
63
64char win_title[TITLE_LEN];
65
66timeout_t timeouts[] = {
67 { { 0, 0 }, False, redraw },
68 { { 0, 0 }, False, reset_cursor },
69 { { 0, 0 }, False, animate }
70};
71
72void cleanup() {
73 static int in = 0;
74
75 if (!in++) {
76 img_close(&img, 0);
77 tns_free(&tns);
78 win_close(&win);
79 }
80}
81
82void check_add_file(char *filename) {
83 if (!filename || !*filename)
84 return;
85
86 if (access(filename, R_OK)) {
87 warn("could not open file: %s", filename);
88 return;
89 }
90
91 if (fileidx == filecnt) {
92 filecnt *= 2;
93 files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
94 }
95 if (*filename != '/') {
96 files[fileidx].path = absolute_path(filename);
97 if (!files[fileidx].path) {
98 warn("could not get absolute path of file: %s\n", filename);
99 return;
100 }
101 }
102 files[fileidx].name = s_strdup(filename);
103 if (*filename == '/')
104 files[fileidx].path = files[fileidx].name;
105 fileidx++;
106}
107
108void remove_file(int n, unsigned char silent) {
109 if (n < 0 || n >= filecnt)
110 return;
111
112 if (filecnt == 1) {
113 if (!silent)
114 fprintf(stderr, "sxiv: no more files to display, aborting\n");
115 cleanup();
116 exit(!silent);
117 }
118
119 if (files[n].path != files[n].name)
120 free((void*) files[n].path);
121 free((void*) files[n].name);
122
123 if (n + 1 < filecnt)
124 memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
125 if (n + 1 < tns.cnt) {
126 memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
127 sizeof(thumb_t));
128 memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
129 }
130
131 filecnt--;
132 if (n < tns.cnt)
133 tns.cnt--;
134}
135
136void set_timeout(timeout_f handler, int time, int overwrite) {
137 int i;
138
139 for (i = 0; i < ARRLEN(timeouts); i++) {
140 if (timeouts[i].handler == handler) {
141 if (!timeouts[i].active || overwrite) {
142 gettimeofday(&timeouts[i].when, 0);
143 MSEC_ADD_TO_TIMEVAL(time, &timeouts[i].when);
144 timeouts[i].active = True;
145 }
146 return;
147 }
148 }
149}
150
151void reset_timeout(timeout_f handler) {
152 int i;
153
154 for (i = 0; i < ARRLEN(timeouts); i++) {
155 if (timeouts[i].handler == handler) {
156 timeouts[i].active = False;
157 return;
158 }
159 }
160}
161
162int check_timeouts(struct timeval *t) {
163 int i = 0, tdiff, tmin = -1;
164 struct timeval now;
165
166 gettimeofday(&now, 0);
167 while (i < ARRLEN(timeouts)) {
168 if (timeouts[i].active) {
169 tdiff = TIMEDIFF(&timeouts[i].when, &now);
170 if (tdiff <= 0) {
171 timeouts[i].active = False;
172 if (timeouts[i].handler)
173 timeouts[i].handler();
174 i = tmin = -1;
175 } else if (tmin < 0 || tdiff < tmin) {
176 tmin = tdiff;
177 }
178 }
179 i++;
180 }
181 if (tmin > 0 && t)
182 MSEC_TO_TIMEVAL(tmin, t);
183 return tmin > 0;
184}
185
186void load_image(int new) {
187 struct stat fstats;
188
189 if (new < 0 || new >= filecnt)
190 return;
191
192 win_set_cursor(&win, CURSOR_WATCH);
193
194 img_close(&img, 0);
195 while (!img_load(&img, &files[new])) {
196 remove_file(new, 0);
197 if (new >= filecnt)
198 new = filecnt - 1;
199 }
200
201 fileidx = new;
202 if (!stat(files[new].path, &fstats))
203 filesize = fstats.st_size;
204 else
205 filesize = 0;
206
207 if (img.multi.cnt) {
208 if (img.multi.animate)
209 set_timeout(animate, img.multi.frames[img.multi.sel].delay, 1);
210 else
211 reset_timeout(animate);
212 }
213}
214
215void update_title() {
216 int n;
217 float size;
218 const char *unit;
219
220 if (mode == MODE_THUMB) {
221 n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
222 tns.cnt ? tns.sel + 1 : 0, tns.cnt,
223 tns.cnt ? files[tns.sel].name : "");
224 } else {
225 size = filesize;
226 size_readable(&size, &unit);
227 if (img.multi.cnt)
228 n = snprintf(win_title, TITLE_LEN,
229 "sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) {%d/%d} %s",
230 fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
231 img.h, size, unit, img.multi.sel + 1, img.multi.cnt,
232 files[fileidx].name);
233 else
234 n = snprintf(win_title, TITLE_LEN,
235 "sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) %s",
236 fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
237 img.h, size, unit, files[fileidx].name);
238 }
239
240 if (n >= TITLE_LEN) {
241 for (n = 0; n < 3; n++)
242 win_title[TITLE_LEN - n - 2] = '.';
243 }
244
245 win_set_title(&win, win_title);
246}
247
248void redraw() {
249 if (mode == MODE_IMAGE)
250 img_render(&img, &win);
251 else
252 tns_render(&tns, &win);
253 update_title();
254 reset_timeout(redraw);
255 reset_cursor();
256}
257
258void reset_cursor() {
259 int i;
260 cursor_t cursor = CURSOR_NONE;
261
262 if (mode == MODE_IMAGE) {
263 for (i = 0; i < ARRLEN(timeouts); i++) {
264 if (timeouts[i].handler == reset_cursor) {
265 if (timeouts[i].active)
266 cursor = CURSOR_ARROW;
267 break;
268 }
269 }
270 } else {
271 if (tns.cnt != filecnt)
272 cursor = CURSOR_WATCH;
273 else
274 cursor = CURSOR_ARROW;
275 }
276 win_set_cursor(&win, cursor);
277}
278
279void animate() {
280 int delay;
281
282 delay = img_frame_animate(&img, 0);
283 if (delay) {
284 set_timeout(animate, delay, 1);
285 redraw();
286 }
287}
288
289Bool keymask(const keymap_t *k, unsigned int state) {
290 return (k->ctrl ? ControlMask : 0) == (state & ControlMask);
291}
292
293Bool buttonmask(const button_t *b, unsigned int state) {
294 return ((b->ctrl ? ControlMask : 0) | (b->shift ? ShiftMask : 0)) ==
295 (state & (ControlMask | ShiftMask));
296}
297
298void on_keypress(XKeyEvent *kev) {
299 int i;
300 KeySym ksym;
301 char key;
302
303 if (!kev)
304 return;
305
306 XLookupString(kev, &key, 1, &ksym, NULL);
307
308 for (i = 0; i < ARRLEN(keys); i++) {
309 if (keys[i].ksym == ksym && keymask(&keys[i], kev->state)) {
310 if (keys[i].cmd && keys[i].cmd(keys[i].arg))
311 redraw();
312 return;
313 }
314 }
315}
316
317void on_buttonpress(XButtonEvent *bev) {
318 int i, sel;
319
320 if (!bev)
321 return;
322
323 if (mode == MODE_IMAGE) {
324 win_set_cursor(&win, CURSOR_ARROW);
325 set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
326
327 for (i = 0; i < ARRLEN(buttons); i++) {
328 if (buttons[i].button == bev->button &&
329 buttonmask(&buttons[i], bev->state))
330 {
331 if (buttons[i].cmd && buttons[i].cmd(buttons[i].arg))
332 redraw();
333 return;
334 }
335 }
336 } else {
337 /* thumbnail mode (hard-coded) */
338 switch (bev->button) {
339 case Button1:
340 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
341 if (sel == tns.sel) {
342 mode = MODE_IMAGE;
343 set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
344 load_image(tns.sel);
345 } else {
346 tns_highlight(&tns, &win, tns.sel, False);
347 tns_highlight(&tns, &win, sel, True);
348 tns.sel = sel;
349 }
350 redraw();
351 break;
352 }
353 break;
354 case Button4:
355 case Button5:
356 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN))
357 redraw();
358 break;
359 }
360 }
361}
362
363void run() {
364 int xfd;
365 fd_set fds;
366 struct timeval timeout;
367 XEvent ev;
368
369 redraw();
370
371 while (1) {
372 while (mode == MODE_THUMB && tns.cnt < filecnt &&
373 !XPending(win.env.dpy))
374 {
375 /* load thumbnails */
376 set_timeout(redraw, TO_REDRAW_THUMBS, 0);
377 if (tns_load(&tns, tns.cnt, &files[tns.cnt], False, False))
378 tns.cnt++;
379 else
380 remove_file(tns.cnt, 0);
381 if (tns.cnt == filecnt)
382 redraw();
383 else
384 check_timeouts(NULL);
385 }
386
387 while (!XPending(win.env.dpy) && check_timeouts(&timeout)) {
388 /* wait for timeouts */
389 xfd = ConnectionNumber(win.env.dpy);
390 FD_ZERO(&fds);
391 FD_SET(xfd, &fds);
392 select(xfd + 1, &fds, 0, 0, &timeout);
393 }
394
395 if (!XNextEvent(win.env.dpy, &ev)) {
396 /* handle events */
397 switch (ev.type) {
398 case ButtonPress:
399 on_buttonpress(&ev.xbutton);
400 break;
401 case ClientMessage:
402 if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
403 return;
404 break;
405 case ConfigureNotify:
406 if (win_configure(&win, &ev.xconfigure)) {
407 set_timeout(redraw, TO_REDRAW_RESIZE, 0);
408 if (mode == MODE_IMAGE)
409 img.checkpan = 1;
410 else
411 tns.dirty = 1;
412 }
413 break;
414 case KeyPress:
415 on_keypress(&ev.xkey);
416 break;
417 case MotionNotify:
418 if (mode == MODE_IMAGE) {
419 win_set_cursor(&win, CURSOR_ARROW);
420 set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
421 }
422 break;
423 }
424 }
425 }
426}
427
428int fncmp(const void *a, const void *b) {
429 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
430}
431
432int main(int argc, char **argv) {
433 int i, len, start;
434 size_t n;
435 char *filename;
436 struct stat fstats;
437 r_dir_t dir;
438
439 parse_options(argc, argv);
440
441 if (options->clean_cache) {
442 tns_init(&tns, 0);
443 tns_clean_cache(&tns);
444 exit(0);
445 }
446
447 if (!options->filecnt) {
448 print_usage();
449 exit(1);
450 }
451
452 if (options->recursive || options->from_stdin)
453 filecnt = FNAME_CNT;
454 else
455 filecnt = options->filecnt;
456
457 files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
458 fileidx = 0;
459
460 /* build file list: */
461 if (options->from_stdin) {
462 filename = NULL;
463 while ((len = getline(&filename, &n, stdin)) > 0) {
464 if (filename[len-1] == '\n')
465 filename[len-1] = '\0';
466 check_add_file(filename);
467 }
468 } else {
469 for (i = 0; i < options->filecnt; i++) {
470 filename = options->filenames[i];
471
472 if (stat(filename, &fstats) || !S_ISDIR(fstats.st_mode)) {
473 check_add_file(filename);
474 } else {
475 if (!options->recursive) {
476 warn("ignoring directory: %s", filename);
477 continue;
478 }
479 if (r_opendir(&dir, filename)) {
480 warn("could not open directory: %s", filename);
481 continue;
482 }
483 start = fileidx;
484 printf("reading dir: %s\n", filename);
485 while ((filename = r_readdir(&dir))) {
486 check_add_file(filename);
487 free((void*) filename);
488 }
489 r_closedir(&dir);
490 if (fileidx - start > 1)
491 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
492 }
493 }
494 }
495
496 if (!fileidx) {
497 fprintf(stderr, "sxiv: no valid image file given, aborting\n");
498 exit(1);
499 }
500
501 filecnt = fileidx;
502 fileidx = options->startnum < filecnt ? options->startnum : 0;
503
504 win_init(&win);
505 img_init(&img, &win);
506
507 if (options->thumbnails) {
508 mode = MODE_THUMB;
509 tns_init(&tns, filecnt);
510 while (!tns_load(&tns, 0, &files[0], False, False))
511 remove_file(0, 0);
512 tns.cnt = 1;
513 } else {
514 mode = MODE_IMAGE;
515 tns.thumbs = NULL;
516 load_image(fileidx);
517 }
518
519 win_open(&win);
520
521 run();
522 cleanup();
523
524 return 0;
525}