526 lines
11 KiB
C
526 lines
11 KiB
C
/* sxiv: main.c
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* Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include "commands.h"
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#include "image.h"
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#include "options.h"
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#include "thumbs.h"
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#include "types.h"
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#include "util.h"
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#include "window.h"
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#define _MAPPINGS_CONFIG
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#include "config.h"
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enum {
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TITLE_LEN = 256,
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FNAME_CNT = 1024
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};
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typedef struct {
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struct timeval when;
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Bool active;
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timeout_f handler;
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} timeout_t;
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/* timeout handler functions: */
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void redraw();
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void reset_cursor();
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void animate();
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appmode_t mode;
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img_t img;
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tns_t tns;
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win_t win;
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fileinfo_t *files;
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int filecnt, fileidx;
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size_t filesize;
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char win_title[TITLE_LEN];
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timeout_t timeouts[] = {
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{ { 0, 0 }, False, redraw },
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{ { 0, 0 }, False, reset_cursor },
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{ { 0, 0 }, False, animate }
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};
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void cleanup() {
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static int in = 0;
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if (!in++) {
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img_close(&img, 0);
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tns_free(&tns);
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win_close(&win);
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}
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}
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void check_add_file(char *filename) {
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if (!filename || !*filename)
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return;
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if (access(filename, R_OK)) {
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warn("could not open file: %s", filename);
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return;
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}
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if (fileidx == filecnt) {
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filecnt *= 2;
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files = (fileinfo_t*) s_realloc(files, filecnt * sizeof(fileinfo_t));
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}
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if (*filename != '/') {
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files[fileidx].path = absolute_path(filename);
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if (!files[fileidx].path) {
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warn("could not get absolute path of file: %s\n", filename);
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return;
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}
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}
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files[fileidx].name = s_strdup(filename);
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if (*filename == '/')
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files[fileidx].path = files[fileidx].name;
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fileidx++;
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}
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void remove_file(int n, unsigned char silent) {
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if (n < 0 || n >= filecnt)
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return;
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if (filecnt == 1) {
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if (!silent)
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fprintf(stderr, "sxiv: no more files to display, aborting\n");
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cleanup();
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exit(!silent);
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}
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if (files[n].path != files[n].name)
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free((void*) files[n].path);
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free((void*) files[n].name);
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if (n + 1 < filecnt)
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memmove(files + n, files + n + 1, (filecnt - n - 1) * sizeof(fileinfo_t));
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if (n + 1 < tns.cnt) {
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memmove(tns.thumbs + n, tns.thumbs + n + 1, (tns.cnt - n - 1) *
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sizeof(thumb_t));
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memset(tns.thumbs + tns.cnt - 1, 0, sizeof(thumb_t));
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}
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filecnt--;
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if (n < tns.cnt)
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tns.cnt--;
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}
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void set_timeout(timeout_f handler, int time, int overwrite) {
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int i;
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for (i = 0; i < LEN(timeouts); i++) {
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if (timeouts[i].handler == handler) {
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if (!timeouts[i].active || overwrite) {
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gettimeofday(&timeouts[i].when, 0);
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MSEC_ADD_TO_TIMEVAL(time, &timeouts[i].when);
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timeouts[i].active = True;
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}
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return;
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}
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}
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}
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void reset_timeout(timeout_f handler) {
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int i;
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for (i = 0; i < LEN(timeouts); i++) {
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if (timeouts[i].handler == handler) {
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timeouts[i].active = False;
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return;
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}
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}
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}
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int check_timeouts(struct timeval *t) {
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int i = 0, tdiff, tmin = -1;
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struct timeval now;
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gettimeofday(&now, 0);
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while (i < LEN(timeouts)) {
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if (timeouts[i].active) {
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tdiff = TIMEDIFF(&timeouts[i].when, &now);
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if (tdiff <= 0) {
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timeouts[i].active = False;
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if (timeouts[i].handler)
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timeouts[i].handler();
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i = tmin = -1;
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} else if (tmin < 0 || tdiff < tmin) {
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tmin = tdiff;
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}
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}
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i++;
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}
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if (tmin > 0 && t)
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MSEC_TO_TIMEVAL(tmin, t);
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return tmin > 0;
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}
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void load_image(int new) {
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struct stat fstats;
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if (new < 0 || new >= filecnt)
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return;
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win_set_cursor(&win, CURSOR_WATCH);
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img_close(&img, 0);
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while (!img_load(&img, &files[new])) {
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remove_file(new, 0);
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if (new >= filecnt)
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new = filecnt - 1;
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}
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fileidx = new;
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if (!stat(files[new].path, &fstats))
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filesize = fstats.st_size;
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else
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filesize = 0;
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if (img.multi.cnt) {
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if (img.multi.animate)
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set_timeout(animate, img.multi.frames[img.multi.sel].delay, 1);
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else
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reset_timeout(animate);
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}
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}
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void update_title() {
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int n;
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float size;
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const char *unit;
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if (mode == MODE_THUMB) {
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n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] %s",
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tns.cnt ? tns.sel + 1 : 0, tns.cnt,
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tns.cnt ? files[tns.sel].name : "");
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} else {
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size = filesize;
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size_readable(&size, &unit);
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if (img.multi.cnt)
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n = snprintf(win_title, TITLE_LEN,
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"sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) {%d/%d} %s",
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fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
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img.h, size, unit, img.multi.sel + 1, img.multi.cnt,
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files[fileidx].name);
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else
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n = snprintf(win_title, TITLE_LEN,
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"sxiv: [%d/%d] <%d%%> <%dx%d> (%.2f%s) %s",
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fileidx + 1, filecnt, (int) (img.zoom * 100.0), img.w,
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img.h, size, unit, files[fileidx].name);
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}
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if (n >= TITLE_LEN) {
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for (n = 0; n < 3; n++)
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win_title[TITLE_LEN - n - 2] = '.';
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}
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win_set_title(&win, win_title);
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}
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void redraw() {
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if (mode == MODE_IMAGE)
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img_render(&img, &win);
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else
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tns_render(&tns, &win);
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update_title();
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reset_timeout(redraw);
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reset_cursor();
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}
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void reset_cursor() {
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int i;
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cursor_t cursor = CURSOR_NONE;
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if (mode == MODE_IMAGE) {
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for (i = 0; i < LEN(timeouts); i++) {
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if (timeouts[i].handler == reset_cursor) {
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if (timeouts[i].active)
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cursor = CURSOR_ARROW;
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break;
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}
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}
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} else {
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if (tns.cnt != filecnt)
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cursor = CURSOR_WATCH;
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else
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cursor = CURSOR_ARROW;
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}
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win_set_cursor(&win, cursor);
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}
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void animate() {
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int delay;
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delay = img_frame_animate(&img, 0);
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if (delay) {
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set_timeout(animate, delay, 1);
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redraw();
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}
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}
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Bool keymask(const keymap_t *k, unsigned int state) {
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return (k->ctrl ? ControlMask : 0) == (state & ControlMask);
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}
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Bool buttonmask(const button_t *b, unsigned int state) {
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return ((b->ctrl ? ControlMask : 0) | (b->shift ? ShiftMask : 0)) ==
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(state & (ControlMask | ShiftMask));
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}
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void on_keypress(XKeyEvent *kev) {
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int i;
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KeySym ksym;
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char key;
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if (!kev)
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return;
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XLookupString(kev, &key, 1, &ksym, NULL);
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for (i = 0; i < LEN(keys); i++) {
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if (keys[i].ksym == ksym && keymask(&keys[i], kev->state)) {
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if (keys[i].cmd && keys[i].cmd(keys[i].arg))
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redraw();
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return;
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}
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}
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}
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void on_buttonpress(XButtonEvent *bev) {
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int i, sel;
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if (!bev)
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return;
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if (mode == MODE_IMAGE) {
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
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for (i = 0; i < LEN(buttons); i++) {
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if (buttons[i].button == bev->button &&
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buttonmask(&buttons[i], bev->state))
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{
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if (buttons[i].cmd && buttons[i].cmd(buttons[i].arg))
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redraw();
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return;
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}
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}
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} else {
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/* thumbnail mode (hard-coded) */
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switch (bev->button) {
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case Button1:
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if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
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if (sel == tns.sel) {
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mode = MODE_IMAGE;
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set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
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load_image(tns.sel);
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} else {
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tns_highlight(&tns, &win, tns.sel, False);
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tns_highlight(&tns, &win, sel, True);
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tns.sel = sel;
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}
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redraw();
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break;
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}
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break;
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case Button4:
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case Button5:
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if (tns_scroll(&tns, bev->button == Button4 ? DIR_UP : DIR_DOWN))
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redraw();
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break;
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}
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}
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}
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void run() {
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int xfd;
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fd_set fds;
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struct timeval timeout;
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XEvent ev;
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redraw();
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while (1) {
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while (mode == MODE_THUMB && tns.cnt < filecnt &&
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!XPending(win.env.dpy))
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{
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/* load thumbnails */
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set_timeout(redraw, TO_REDRAW_THUMBS, 0);
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if (tns_load(&tns, tns.cnt, &files[tns.cnt], False, False))
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tns.cnt++;
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else
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remove_file(tns.cnt, 0);
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if (tns.cnt == filecnt)
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redraw();
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else
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check_timeouts(NULL);
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}
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while (!XPending(win.env.dpy) && check_timeouts(&timeout)) {
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/* wait for timeouts */
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xfd = ConnectionNumber(win.env.dpy);
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FD_ZERO(&fds);
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FD_SET(xfd, &fds);
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select(xfd + 1, &fds, 0, 0, &timeout);
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}
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if (!XNextEvent(win.env.dpy, &ev)) {
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/* handle events */
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switch (ev.type) {
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case ButtonPress:
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on_buttonpress(&ev.xbutton);
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break;
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case ClientMessage:
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if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
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return;
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break;
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case ConfigureNotify:
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if (win_configure(&win, &ev.xconfigure)) {
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set_timeout(redraw, TO_REDRAW_RESIZE, 0);
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if (mode == MODE_IMAGE)
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img.checkpan = 1;
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else
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tns.dirty = 1;
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}
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break;
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case KeyPress:
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on_keypress(&ev.xkey);
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break;
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case MotionNotify:
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if (mode == MODE_IMAGE) {
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
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}
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break;
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}
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}
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}
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}
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int fncmp(const void *a, const void *b) {
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return strcoll(((fileinfo_t*) a)->name, ((fileinfo_t*) b)->name);
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}
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int main(int argc, char **argv) {
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int i, len, start;
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size_t n;
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char *filename;
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struct stat fstats;
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r_dir_t dir;
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parse_options(argc, argv);
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if (options->clean_cache) {
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tns_init(&tns, 0);
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tns_clean_cache(&tns);
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exit(0);
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}
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if (!options->filecnt) {
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print_usage();
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exit(1);
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}
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if (options->recursive || options->from_stdin)
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filecnt = FNAME_CNT;
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else
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filecnt = options->filecnt;
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files = (fileinfo_t*) s_malloc(filecnt * sizeof(fileinfo_t));
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fileidx = 0;
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/* build file list: */
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if (options->from_stdin) {
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filename = NULL;
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while ((len = getline(&filename, &n, stdin)) > 0) {
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if (filename[len-1] == '\n')
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filename[len-1] = '\0';
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check_add_file(filename);
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}
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} else {
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for (i = 0; i < options->filecnt; i++) {
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filename = options->filenames[i];
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if (stat(filename, &fstats) || !S_ISDIR(fstats.st_mode)) {
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check_add_file(filename);
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} else {
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if (!options->recursive) {
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warn("ignoring directory: %s", filename);
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continue;
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}
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if (r_opendir(&dir, filename)) {
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warn("could not open directory: %s", filename);
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continue;
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}
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start = fileidx;
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printf("reading dir: %s\n", filename);
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while ((filename = r_readdir(&dir))) {
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check_add_file(filename);
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free((void*) filename);
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}
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r_closedir(&dir);
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if (fileidx - start > 1)
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qsort(files + start, fileidx - start, sizeof(fileinfo_t), fncmp);
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}
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}
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}
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if (!fileidx) {
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fprintf(stderr, "sxiv: no valid image file given, aborting\n");
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exit(1);
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}
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filecnt = fileidx;
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fileidx = options->startnum < filecnt ? options->startnum : 0;
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win_init(&win);
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img_init(&img, &win);
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if (options->thumbnails) {
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mode = MODE_THUMB;
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tns_init(&tns, filecnt);
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while (!tns_load(&tns, 0, &files[0], False, False))
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remove_file(0, 0);
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tns.cnt = 1;
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} else {
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mode = MODE_IMAGE;
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tns.thumbs = NULL;
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load_image(fileidx);
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}
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win_open(&win);
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run();
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cleanup();
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return 0;
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}
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