775 lines
16 KiB
C
775 lines
16 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
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <dirent.h>
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#include <sys/select.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.h>
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#include "config.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 "util.h"
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#include "window.h"
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#ifdef EXT_COMMANDS
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#include "commands.h"
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#endif
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typedef enum {
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MODE_NORMAL = 0,
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MODE_THUMBS
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} appmode_t;
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void update_title();
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int check_append(const char*);
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void read_dir_rec(const char*);
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void run();
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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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#define DNAME_CNT 512
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#define FNAME_CNT 1024
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const char **filenames;
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int filecnt, fileidx;
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size_t filesize;
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#define TITLE_LEN 256
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char win_title[TITLE_LEN];
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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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img_free(&img);
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tns_free(&tns, &win);
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win_close(&win);
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}
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}
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int load_image(int new) {
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struct stat fstats;
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if (new >= 0 && new < filecnt) {
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img_close(&img, 0);
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fileidx = new;
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if (!stat(filenames[fileidx], &fstats))
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filesize = fstats.st_size;
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else
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filesize = 0;
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return img_load(&img, filenames[fileidx]);
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} else {
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return 0;
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}
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}
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int main(int argc, char **argv) {
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int i;
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const char *filename;
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struct stat fstats;
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parse_options(argc, argv);
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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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filenames = (const char**) s_malloc(filecnt * sizeof(const char*));
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fileidx = 0;
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if (options->from_stdin) {
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while ((filename = readline(stdin))) {
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if (!*filename || !check_append(filename))
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free((void*) 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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if (options->recursive)
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read_dir_rec(filename);
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else
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warn("ignoring directory: %s", filename);
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} else {
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check_append(filename);
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}
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}
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}
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filecnt = fileidx;
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fileidx = 0;
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if (!filecnt) {
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fprintf(stderr, "sxiv: no valid image filename given, aborting\n");
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exit(1);
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}
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win_open(&win);
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img_init(&img, &win);
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if (options->thumbnails) {
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mode = MODE_THUMBS;
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tns_init(&tns, filecnt);
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win_clear(&win);
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win_draw(&win);
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} else {
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mode = MODE_NORMAL;
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tns.thumbs = NULL;
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load_image(fileidx);
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img_render(&img, &win);
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}
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update_title();
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run();
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cleanup();
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return 0;
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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_THUMBS) {
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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 ? filenames[tns.sel] : "");
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} else {
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if (img.im) {
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size = filesize;
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size_readable(&size, &unit);
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n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> (%.2f%s) %s",
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fileidx + 1, filecnt, (int) (img.zoom * 100.0), size, unit,
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filenames[fileidx]);
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} else {
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n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] invalid: %s",
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fileidx + 1, filecnt, filenames[fileidx]);
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}
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}
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if (n >= TITLE_LEN) {
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win_title[TITLE_LEN - 2] = '.';
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win_title[TITLE_LEN - 3] = '.';
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win_title[TITLE_LEN - 4] = '.';
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}
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win_set_title(&win, win_title);
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}
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int check_append(const char *filename) {
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if (!filename)
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return 0;
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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 0;
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} else if (img_check(filename)) {
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if (fileidx == filecnt) {
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filecnt *= 2;
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filenames = (const char**) s_realloc(filenames,
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filecnt * sizeof(const char*));
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}
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filenames[fileidx++] = filename;
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return 1;
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} else {
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return 0;
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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(*((char* const*) a), *((char* const*) b));
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}
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void read_dir_rec(const char *dirname) {
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char *filename;
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const char **dirnames;
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int dircnt, diridx;
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int fcnt, fstart;
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unsigned char first;
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size_t len;
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DIR *dir;
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struct dirent *dentry;
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struct stat fstats;
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if (!dirname)
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return;
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dircnt = DNAME_CNT;
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diridx = first = 1;
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dirnames = (const char**) s_malloc(dircnt * sizeof(const char*));
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dirnames[0] = dirname;
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fcnt = 0;
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fstart = fileidx;
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while (diridx > 0) {
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dirname = dirnames[--diridx];
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if (!(dir = opendir(dirname))) {
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warn("could not open directory: %s", dirname);
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} else {
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while ((dentry = readdir(dir))) {
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if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
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continue;
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len = strlen(dirname) + strlen(dentry->d_name) + 2;
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filename = (char*) s_malloc(len * sizeof(char));
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snprintf(filename, len, "%s%s%s", dirname,
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dirname[strlen(dirname)-1] == '/' ? "" : "/", dentry->d_name);
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if (!stat(filename, &fstats) && S_ISDIR(fstats.st_mode)) {
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if (diridx == dircnt) {
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dircnt *= 2;
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dirnames = (const char**) s_realloc(dirnames,
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dircnt * sizeof(const char*));
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}
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dirnames[diridx++] = filename;
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} else {
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if (check_append(filename))
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++fcnt;
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else
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free(filename);
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}
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}
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closedir(dir);
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}
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if (!first)
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free((void*) dirname);
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else
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first = 0;
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}
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if (fcnt > 1)
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qsort(filenames + fstart, fcnt, sizeof(char*), fncmp);
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free(dirnames);
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}
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#ifdef EXT_COMMANDS
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int run_command(const char *cline, Bool reload) {
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int fncnt, fnlen;
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char *cn, *cmdline;
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const char *co, *fname;
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pid_t pid;
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int ret, status;
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if (!cline || !*cline)
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return 0;
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fncnt = 0;
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co = cline - 1;
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while ((co = strchr(co + 1, '#')))
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++fncnt;
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if (!fncnt)
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return 0;
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ret = 0;
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fname = filenames[mode == MODE_NORMAL ? fileidx : tns.sel];
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fnlen = strlen(fname);
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cn = cmdline = (char*) s_malloc((strlen(cline) + fncnt * (fnlen + 2)) *
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sizeof(char));
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/* replace all '#' with filename */
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for (co = cline; *co; ++co) {
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if (*co == '#') {
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*cn++ = '"';
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strcpy(cn, fname);
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cn += fnlen;
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*cn++ = '"';
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} else {
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*cn++ = *co;
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}
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}
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*cn = '\0';
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if ((pid = fork()) == 0) {
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execlp("/bin/sh", "/bin/sh", "-c", cmdline, NULL);
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warn("could not exec: /bin/sh");
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exit(1);
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} else if (pid < 0) {
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warn("could not fork. command line was: %s", cmdline);
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} else if (reload) {
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waitpid(pid, &status, 0);
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if (WIFEXITED(status) && WEXITSTATUS(status) == 0)
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ret = 1;
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else
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warn("child exited with non-zero return value: %d. command line was: %s",
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WEXITSTATUS(status), cmdline);
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}
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free(cmdline);
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return ret;
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}
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#endif /* EXT_COMMANDS */
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/* event handling */
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#define TO_WIN_RESIZE 75000;
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#define TO_IMAGE_DRAG 1000;
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#define TO_CURSOR_HIDE 1500000;
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#define TO_THUMBS_LOAD 75000;
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int timo_cursor;
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int timo_redraw;
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unsigned char drag;
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int mox, moy;
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void redraw() {
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if (mode == MODE_NORMAL)
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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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timo_redraw = 0;
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}
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void on_keypress(XKeyEvent *kev) {
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int x, y;
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unsigned int w, h;
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char key;
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KeySym ksym;
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int changed;
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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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changed = 0;
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#ifdef EXT_COMMANDS
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/* external commands from commands.h */
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if (CLEANMASK(kev->state) & ControlMask) {
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for (x = 0; x < LEN(commands); ++x) {
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if (commands[x].ksym == ksym) {
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win_set_cursor(&win, CURSOR_WATCH);
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if (run_command(commands[x].cmdline, commands[x].reload)) {
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if (mode == MODE_NORMAL) {
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img_close(&img, 1);
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load_image(fileidx);
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tns_load(&tns, &win, fileidx, filenames[fileidx]);
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} else {
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tns_load(&tns, &win, tns.sel, filenames[tns.sel]);
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}
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redraw();
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}
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win_set_cursor(&win, mode == MODE_NORMAL ? CURSOR_NONE : CURSOR_ARROW);
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return;
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}
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}
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}
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#endif
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if (mode == MODE_NORMAL) {
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switch (ksym) {
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/* navigate image list */
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case XK_n:
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case XK_space:
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if (fileidx + 1 < filecnt)
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changed = load_image(fileidx + 1);
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break;
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case XK_p:
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case XK_BackSpace:
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if (fileidx > 0)
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changed = load_image(fileidx - 1);
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break;
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case XK_bracketleft:
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if (fileidx != 0)
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changed = load_image(MAX(0, fileidx - 10));
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break;
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case XK_bracketright:
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if (fileidx != filecnt - 1)
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changed = load_image(MIN(fileidx + 10, filecnt - 1));
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break;
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case XK_g:
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if (fileidx != 0)
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changed = load_image(0);
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break;
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case XK_G:
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if (fileidx != filecnt - 1)
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changed = load_image(filecnt - 1);
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break;
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/* zooming */
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case XK_plus:
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case XK_equal:
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changed = img_zoom_in(&img);
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break;
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case XK_minus:
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changed = img_zoom_out(&img);
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break;
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case XK_0:
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changed = img_zoom(&img, 1.0);
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break;
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case XK_w:
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if ((changed = img_fit_win(&img, &win)))
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img_center(&img, &win);
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break;
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/* panning */
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case XK_h:
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case XK_Left:
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changed = img_pan(&img, &win, PAN_LEFT);
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break;
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case XK_j:
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case XK_Down:
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changed = img_pan(&img, &win, PAN_DOWN);
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break;
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case XK_k:
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case XK_Up:
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changed = img_pan(&img, &win, PAN_UP);
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break;
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case XK_l:
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case XK_Right:
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changed = img_pan(&img, &win, PAN_RIGHT);
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break;
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/* rotation */
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case XK_less:
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img_rotate_left(&img, &win);
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changed = 1;
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break;
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case XK_greater:
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img_rotate_right(&img, &win);
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changed = 1;
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break;
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/* control window */
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case XK_W:
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x = MAX(0, win.x + img.x);
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y = MAX(0, win.y + img.y);
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w = img.w * img.zoom;
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h = img.h * img.zoom;
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if ((changed = win_moveresize(&win, x, y, w, h))) {
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img.x = x - win.x;
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img.y = y - win.y;
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}
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break;
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/* switch to thumbnail mode */
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case XK_Return:
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if (!tns.thumbs)
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tns_init(&tns, filecnt);
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img_close(&img, 0);
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mode = MODE_THUMBS;
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win_set_cursor(&win, CURSOR_ARROW);
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timo_cursor = 0;
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tns.sel = fileidx;
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changed = tns.dirty = 1;
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break;
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/* miscellaneous */
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case XK_a:
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img_toggle_antialias(&img);
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changed = 1;
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break;
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case XK_A:
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img.alpha ^= 1;
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changed = 1;
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break;
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case XK_r:
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changed = load_image(fileidx);
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break;
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}
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} else {
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/* thumbnail mode */
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switch (ksym) {
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/* open selected image */
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case XK_Return:
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load_image(tns.sel);
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mode = MODE_NORMAL;
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win_set_cursor(&win, CURSOR_NONE);
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changed = 1;
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break;
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/* move selection */
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case XK_h:
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case XK_Left:
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changed = tns_move_selection(&tns, &win, TNS_LEFT);
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break;
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case XK_j:
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case XK_Down:
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changed = tns_move_selection(&tns, &win, TNS_DOWN);
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break;
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case XK_k:
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case XK_Up:
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changed = tns_move_selection(&tns, &win, TNS_UP);
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break;
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case XK_l:
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case XK_Right:
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changed = tns_move_selection(&tns, &win, TNS_RIGHT);
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break;
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case XK_g:
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if (tns.sel != 0) {
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tns.sel = 0;
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changed = tns.dirty = 1;
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}
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break;
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case XK_G:
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if (tns.sel != tns.cnt - 1) {
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tns.sel = tns.cnt - 1;
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changed = tns.dirty = 1;
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}
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}
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}
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/* common key mappings */
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switch (ksym) {
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case XK_Escape:
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cleanup();
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exit(2);
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case XK_q:
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cleanup();
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exit(0);
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case XK_f:
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win_toggle_fullscreen(&win);
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/* render on next configurenotify */
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break;
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|
}
|
|
|
|
if (changed)
|
|
redraw();
|
|
}
|
|
|
|
void on_buttonpress(XButtonEvent *bev) {
|
|
int changed, sel;
|
|
unsigned int mask;
|
|
|
|
if (!bev)
|
|
return;
|
|
|
|
mask = CLEANMASK(bev->state);
|
|
changed = 0;
|
|
|
|
if (mode == MODE_NORMAL) {
|
|
switch (bev->button) {
|
|
case Button1:
|
|
if (fileidx + 1 < filecnt)
|
|
changed = load_image(fileidx + 1);
|
|
break;
|
|
case Button2:
|
|
mox = bev->x;
|
|
moy = bev->y;
|
|
win_set_cursor(&win, CURSOR_HAND);
|
|
timo_cursor = 0;
|
|
drag = 1;
|
|
break;
|
|
case Button3:
|
|
if (fileidx > 0)
|
|
changed = load_image(fileidx - 1);
|
|
break;
|
|
case Button4:
|
|
if (mask == ControlMask)
|
|
changed = img_zoom_in(&img);
|
|
else if (mask == ShiftMask)
|
|
changed = img_pan(&img, &win, PAN_LEFT);
|
|
else
|
|
changed = img_pan(&img, &win, PAN_UP);
|
|
break;
|
|
case Button5:
|
|
if (mask == ControlMask)
|
|
changed = img_zoom_out(&img);
|
|
else if (mask == ShiftMask)
|
|
changed = img_pan(&img, &win, PAN_RIGHT);
|
|
else
|
|
changed = img_pan(&img, &win, PAN_DOWN);
|
|
break;
|
|
case 6:
|
|
changed = img_pan(&img, &win, PAN_LEFT);
|
|
break;
|
|
case 7:
|
|
changed = img_pan(&img, &win, PAN_RIGHT);
|
|
break;
|
|
}
|
|
} else {
|
|
/* thumbnail mode */
|
|
switch (bev->button) {
|
|
case Button1:
|
|
if ((sel = tns_translate(&tns, bev->x, bev->y)) >= 0) {
|
|
if (sel == tns.sel) {
|
|
load_image(tns.sel);
|
|
mode = MODE_NORMAL;
|
|
timo_cursor = TO_CURSOR_HIDE;
|
|
} else {
|
|
tns_highlight(&tns, &win, tns.sel, False);
|
|
tns_highlight(&tns, &win, sel, True);
|
|
tns.sel = sel;
|
|
}
|
|
changed = 1;
|
|
break;
|
|
}
|
|
break;
|
|
case Button4:
|
|
changed = tns_scroll(&tns, TNS_UP);
|
|
break;
|
|
case Button5:
|
|
changed = tns_scroll(&tns, TNS_DOWN);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (changed)
|
|
redraw();
|
|
}
|
|
|
|
void on_motionnotify(XMotionEvent *mev) {
|
|
if (!mev)
|
|
return;
|
|
|
|
if (mev->x >= 0 && mev->x <= win.w && mev->y >= 0 && mev->y <= win.h) {
|
|
if (img_move(&img, &win, mev->x - mox, mev->y - moy))
|
|
timo_redraw = TO_IMAGE_DRAG;
|
|
|
|
mox = mev->x;
|
|
moy = mev->y;
|
|
}
|
|
}
|
|
|
|
void run() {
|
|
int xfd, timeout;
|
|
fd_set fds;
|
|
struct timeval tt, t0, t1;
|
|
XEvent ev;
|
|
|
|
timo_cursor = timo_redraw = 0;
|
|
drag = 0;
|
|
|
|
if (mode == MODE_NORMAL)
|
|
timo_cursor = TO_CURSOR_HIDE;
|
|
|
|
while (1) {
|
|
if (mode == MODE_THUMBS && tns.cnt < filecnt) {
|
|
win_set_cursor(&win, CURSOR_WATCH);
|
|
gettimeofday(&t0, 0);
|
|
|
|
while (!XPending(win.env.dpy) && tns.cnt < filecnt) {
|
|
/* tns.cnt is increased inside tns_load */
|
|
tns_load(&tns, &win, tns.cnt, filenames[tns.cnt]);
|
|
gettimeofday(&t1, 0);
|
|
if (TV_TO_DOUBLE(t1) - TV_TO_DOUBLE(t0) >= 0.25)
|
|
break;
|
|
}
|
|
if (tns.cnt == filecnt)
|
|
win_set_cursor(&win, CURSOR_ARROW);
|
|
if (!XPending(win.env.dpy)) {
|
|
redraw();
|
|
continue;
|
|
} else {
|
|
timo_redraw = TO_THUMBS_LOAD;
|
|
}
|
|
} else if (timo_cursor || timo_redraw) {
|
|
gettimeofday(&t0, 0);
|
|
if (timo_cursor && timo_redraw)
|
|
timeout = MIN(timo_cursor, timo_redraw);
|
|
else if (timo_cursor)
|
|
timeout = timo_cursor;
|
|
else
|
|
timeout = timo_redraw;
|
|
tt.tv_sec = timeout / 1000000;
|
|
tt.tv_usec = timeout % 1000000;
|
|
xfd = ConnectionNumber(win.env.dpy);
|
|
FD_ZERO(&fds);
|
|
FD_SET(xfd, &fds);
|
|
|
|
if (!XPending(win.env.dpy))
|
|
select(xfd + 1, &fds, 0, 0, &tt);
|
|
gettimeofday(&t1, 0);
|
|
timeout = MIN((TV_TO_DOUBLE(t1) - TV_TO_DOUBLE(t0)) * 1000000, timeout);
|
|
|
|
/* timeouts fired? */
|
|
if (timo_cursor) {
|
|
timo_cursor = MAX(0, timo_cursor - timeout);
|
|
if (!timo_cursor)
|
|
win_set_cursor(&win, CURSOR_NONE);
|
|
}
|
|
if (timo_redraw) {
|
|
timo_redraw = MAX(0, timo_redraw - timeout);
|
|
if (!timo_redraw)
|
|
redraw();
|
|
}
|
|
if (!XPending(win.env.dpy) && (timo_cursor || timo_redraw))
|
|
continue;
|
|
}
|
|
|
|
if (!XNextEvent(win.env.dpy, &ev)) {
|
|
switch (ev.type) {
|
|
case KeyPress:
|
|
on_keypress(&ev.xkey);
|
|
break;
|
|
case ButtonPress:
|
|
on_buttonpress(&ev.xbutton);
|
|
break;
|
|
case ButtonRelease:
|
|
if (ev.xbutton.button == Button2) {
|
|
drag = 0;
|
|
if (mode == MODE_NORMAL) {
|
|
win_set_cursor(&win, CURSOR_ARROW);
|
|
timo_cursor = TO_CURSOR_HIDE;
|
|
}
|
|
}
|
|
break;
|
|
case MotionNotify:
|
|
if (drag) {
|
|
on_motionnotify(&ev.xmotion);
|
|
} else if (mode == MODE_NORMAL) {
|
|
if (!timo_cursor)
|
|
win_set_cursor(&win, CURSOR_ARROW);
|
|
timo_cursor = TO_CURSOR_HIDE;
|
|
}
|
|
break;
|
|
case ConfigureNotify:
|
|
if (win_configure(&win, &ev.xconfigure)) {
|
|
timo_redraw = TO_WIN_RESIZE;
|
|
if (mode == MODE_NORMAL)
|
|
img.checkpan = 1;
|
|
else
|
|
tns.dirty = 1;
|
|
}
|
|
break;
|
|
case ClientMessage:
|
|
if ((Atom) ev.xclient.data.l[0] == wm_delete_win)
|
|
return;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|