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nsxivmain.c

475 lines · 10.4 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
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (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., 51 Franklin Street, 5th 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
44appmode_t mode;
45img_t img;
46tns_t tns;
47win_t win;
48
49fileinfo_t *files;
50int filecnt, fileidx;
51size_t filesize;
52
53char win_title[TITLE_LEN];
54
55int timo_cursor;
56int timo_redraw;
57int timo_adelay; /* multi-frame animation delay time */
58
59void cleanup() {
60 static int in = 0;
61
62 if (!in++) {
63 img_close(&img, 0);
64 tns_free(&tns);
65 win_close(&win);
66 }
67}
68
69void check_add_file(char *filename) {
70 if (!filename || !*filename)
71 return;
72
73 if (access(filename, R_OK)) {
74 warn("could not open file: %s", filename);
75 return;
76 }
77
78 if (fileidx == filecnt) {
79 filecnt *= 2;
80 files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
81 }
82 if (*filename != '/') {
83 files[fileidx].path = absolute_path(filename);
84 if (!files[fileidx].path) {
85 warn("could not get absolute path of file: %s\n", filename);
86 return;
87 }
88 }
89 files[fileidx].name = s_strdup(filename);
90 if (*filename == '/')
91 files[fileidx].path = files[fileidx].name;
92 fileidx++;
93}
94
95void remove_file(int n, unsigned char silent) {
96 if (n < 0 || n >= filecnt)
97 return;
98
99 if (filecnt == 1) {
100 if (!silent)
101 fprintf(stderr, "sxiv: no more files to display, aborting\n");
102 cleanup();
103 exit(!silent);
104 }
105
106 if (n + 1 < filecnt) {
107 if (files[n].path != files[n].name)
108 free((void*) files[n].path);
109 free((void*) files[n].name);
110 memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
111 }
112 if (n + 1 < tns.cnt) {
113 memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
114 sizeof(thumb_t));
115 memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
116 }
117
118 filecnt--;
119 if (n < tns.cnt)
120 tns.cnt--;
121}
122
123void load_image(int new) {
124 struct stat fstats;
125
126 if (new < 0 || new >= filecnt)
127 return;
128
129 /* cursor gets reset in redraw() */
130 win_set_cursor(&win, CURSOR_WATCH);
131 img_close(&img, 0);
132
133 while (!img_load(&img, &files[new])) {
134 remove_file(new, 0);
135 if (new >= filecnt)
136 new = filecnt - 1;
137 }
138
139 fileidx = new;
140 if (!stat(files[new].path, &fstats))
141 filesize = fstats.st_size;
142 else
143 filesize = 0;
144
145 if (img.multi.cnt) {
146 if (img.multi.animate)
147 timo_adelay = img.multi.frames[img.multi.sel].delay;
148 else
149 timo_adelay = 0;
150 }
151}
152
153void update_title() {
154 int n;
155 float size;
156 const char *unit;
157
158 if (mode == MODE_THUMB) {
159 n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
160 tns.cnt ? tns.sel + 1 : 0, tns.cnt,
161 tns.cnt ? files[tns.sel].name : "");
162 } else {
163 size = filesize;
164 size_readable(&size, &unit);
165 if (img.multi.cnt)
166 n = snprintf(win_title, TITLE_LEN,
167 "sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) {%d/%d} %s",
168 fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
169 img.h, size, unit, img.multi.sel + 1, img.multi.cnt,
170 files[fileidx].name);
171 else
172 n = snprintf(win_title, TITLE_LEN,
173 "sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) %s",
174 fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
175 img.h, size, unit, files[fileidx].name);
176 }
177
178 if (n >= TITLE_LEN) {
179 for (n = 0; n < 3; n++)
180 win_title[TITLE_LEN - n - 2] = '.';
181 }
182
183 win_set_title(&win, win_title);
184}
185
186void redraw() {
187 if (mode == MODE_IMAGE) {
188 img_render(&img, &win);
189 if (timo_cursor)
190 win_set_cursor(&win, CURSOR_ARROW);
191 else
192 win_set_cursor(&win, CURSOR_NONE);
193 } else {
194 tns_render(&tns, &win);
195 }
196 update_title();
197 timo_redraw = 0;
198}
199
200Bool keymask(const keymap_t *k, unsigned int state) {
201 return (k->ctrl ? ControlMask : 0) == (state & ControlMask);
202}
203
204Bool buttonmask(const button_t *b, unsigned int state) {
205 return ((b->ctrl ? ControlMask : 0) | (b->shift ? ShiftMask : 0)) ==
206 (state & (ControlMask | ShiftMask));
207}
208
209void on_keypress(XKeyEvent *kev) {
210 int i;
211 KeySym ksym;
212 char key;
213
214 if (!kev)
215 return;
216
217 XLookupString(kev, &key, 1, &ksym, NULL);
218
219 for (i = 0; i < LEN(keys); i++) {
220 if (keys[i].ksym == ksym && keymask(&keys[i], kev->state)) {
221 if (keys[i].cmd && keys[i].cmd(keys[i].arg))
222 redraw();
223 return;
224 }
225 }
226}
227
228void on_buttonpress(XButtonEvent *bev) {
229 int i, sel;
230
231 if (!bev)
232 return;
233
234 if (mode == MODE_IMAGE) {
235 win_set_cursor(&win, CURSOR_ARROW);
236 timo_cursor = TO_CURSOR_HIDE;
237
238 for (i = 0; i < LEN(buttons); i++) {
239 if (buttons[i].button == bev->button &&
240 buttonmask(&buttons[i], bev->state))
241 {
242 if (buttons[i].cmd && buttons[i].cmd(buttons[i].arg))
243 redraw();
244 return;
245 }
246 }
247 } else {
248 /* thumbnail mode (hard-coded) */
249 switch (bev->button) {
250 case Button1:
251 if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
252 if (sel == tns.sel) {
253 load_image(tns.sel);
254 mode = MODE_IMAGE;
255 timo_cursor = TO_CURSOR_HIDE;
256 } else {
257 tns_highlight(&tns, &win, tns.sel, False);
258 tns_highlight(&tns, &win, sel, True);
259 tns.sel = sel;
260 }
261 redraw();
262 break;
263 }
264 break;
265 case Button4:
266 case Button5:
267 if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN))
268 redraw();
269 break;
270 }
271 }
272}
273
274void run() {
275 int xfd, timeout;
276 fd_set fds;
277 struct timeval tt, t0, t1;
278 XEvent ev;
279
280 timo_cursor = mode == MODE_IMAGE ? TO_CURSOR_HIDE : 0;
281
282 redraw();
283
284 while (1) {
285 if (mode == MODE_THUMB && tns.cnt < filecnt) {
286 /* load thumbnails */
287 win_set_cursor(&win, CURSOR_WATCH);
288 gettimeofday(&t0, 0);
289
290 while (tns.cnt < filecnt && !XPending(win.env.dpy)) {
291 if (tns_load(&tns, tns.cnt, &files[tns.cnt], False, False))
292 tns.cnt++;
293 else
294 remove_file(tns.cnt, 0);
295 gettimeofday(&t1, 0);
296 if (TIMEDIFF(&t1, &t0) >= TO_THUMBS_LOAD)
297 break;
298 }
299 if (tns.cnt == filecnt)
300 win_set_cursor(&win, CURSOR_ARROW);
301 if (!XPending(win.env.dpy)) {
302 redraw();
303 continue;
304 } else {
305 timo_redraw = TO_THUMBS_LOAD;
306 }
307 }
308
309 if (timo_cursor || timo_redraw || timo_adelay) {
310 /* check active timeouts */
311 gettimeofday(&t0, 0);
312 timeout = min_int_nz(3, timo_cursor, timo_redraw, timo_adelay);
313 MSEC_TO_TIMEVAL(timeout, &tt);
314 xfd = ConnectionNumber(win.env.dpy);
315 FD_ZERO(&fds);
316 FD_SET(xfd, &fds);
317
318 if (!XPending(win.env.dpy))
319 select(xfd + 1, &fds, 0, 0, &tt);
320 gettimeofday(&t1, 0);
321 timeout = MIN(TIMEDIFF(&t1, &t0), timeout);
322
323 /* timeouts fired? */
324 if (timo_cursor) {
325 timo_cursor = MAX(0, timo_cursor - timeout);
326 if (!timo_cursor)
327 win_set_cursor(&win, CURSOR_NONE);
328 }
329 if (timo_redraw) {
330 timo_redraw = MAX(0, timo_redraw - timeout);
331 if (!timo_redraw)
332 redraw();
333 }
334 if (timo_adelay) {
335 timo_adelay = MAX(0, timo_adelay - timeout);
336 if (!timo_adelay) {
337 if ((timo_adelay = img_frame_animate(&img, 0)))
338 redraw();
339 }
340 }
341 if ((timo_cursor || timo_redraw || timo_adelay) &&
342 !XPending(win.env.dpy))
343 continue;
344 }
345
346 if (!XNextEvent(win.env.dpy, &ev)) {
347 /* handle events */
348 switch (ev.type) {
349 case ButtonPress:
350 on_buttonpress(&ev.xbutton);
351 break;
352 case ClientMessage:
353 if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
354 return;
355 break;
356 case ConfigureNotify:
357 if (win_configure(&win, &ev.xconfigure)) {
358 timo_redraw = TO_WIN_RESIZE;
359 if (mode == MODE_IMAGE)
360 img.checkpan = 1;
361 else
362 tns.dirty = 1;
363 }
364 break;
365 case KeyPress:
366 on_keypress(&ev.xkey);
367 break;
368 case MotionNotify:
369 if (!timo_cursor)
370 win_set_cursor(&win, CURSOR_ARROW);
371 timo_cursor = TO_CURSOR_HIDE;
372 break;
373 }
374 }
375 }
376}
377
378int fncmp(const void *a, const void *b) {
379 return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
380}
381
382int main(int argc, char **argv) {
383 int i, len, start;
384 size_t n;
385 char *filename;
386 struct stat fstats;
387 r_dir_t dir;
388
389 parse_options(argc, argv);
390
391 if (options->clean_cache) {
392 tns_init(&tns, 0);
393 tns_clean_cache(&tns);
394 exit(0);
395 }
396
397 if (!options->filecnt) {
398 print_usage();
399 exit(1);
400 }
401
402 if (options->recursive || options->from_stdin)
403 filecnt = FNAME_CNT;
404 else
405 filecnt = options->filecnt;
406
407 files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
408 fileidx = 0;
409
410 /* build file list: */
411 if (options->from_stdin) {
412 filename = NULL;
413 while ((len = getline(&filename, &n, stdin)) > 0) {
414 if (filename[len-1] == '\n')
415 filename[len-1] = '\0';
416 check_add_file(filename);
417 }
418 } else {
419 for (i = 0; i < options->filecnt; i++) {
420 filename = options->filenames[i];
421
422 if (stat(filename, &fstats) || !S_ISDIR(fstats.st_mode)) {
423 check_add_file(filename);
424 } else {
425 if (!options->recursive) {
426 warn("ignoring directory: %s", filename);
427 continue;
428 }
429 if (r_opendir(&dir, filename)) {
430 warn("could not open directory: %s", filename);
431 continue;
432 }
433 start = fileidx;
434 printf("reading dir: %s\n", filename);
435 while ((filename = r_readdir(&dir))) {
436 check_add_file(filename);
437 free((void*) filename);
438 }
439 r_closedir(&dir);
440 if (fileidx - start > 1)
441 qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
442 }
443 }
444 }
445
446 if (!fileidx) {
447 fprintf(stderr, "sxiv: no valid image file given, aborting\n");
448 exit(1);
449 }
450
451 filecnt = fileidx;
452 fileidx = options->startnum < filecnt ? options->startnum : 0;
453
454 win_init(&win);
455 img_init(&img, &win);
456
457 if (options->thumbnails) {
458 mode = MODE_THUMB;
459 tns_init(&tns, filecnt);
460 while (!tns_load(&tns, 0, &files[0], False, False))
461 remove_file(0, 0);
462 tns.cnt = 1;
463 } else {
464 mode = MODE_IMAGE;
465 tns.thumbs = NULL;
466 load_image(fileidx);
467 }
468
469 win_open(&win);
470
471 run();
472 cleanup();
473
474 return 0;
475}