532 lines
10 KiB
C
532 lines
10 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 <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/keysym.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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typedef enum appmode_e {
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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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int tns_loaded;
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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_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() {
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struct stat fstats;
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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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}
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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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tns_loaded = 0;
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tns_init(&tns, filecnt);
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}
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if (options->thumbnails == 2) {
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mode = MODE_THUMBS;
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} else {
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mode = MODE_NORMAL;
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load_image();
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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 (img.valid) {
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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] broken: %s",
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fileidx + 1, filecnt, filenames[fileidx]);
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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 (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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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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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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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", dirname, 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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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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free(dirnames);
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}
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/* event handling */
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unsigned char timeout;
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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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timeout = 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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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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/* 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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++fileidx;
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changed = load_image();
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}
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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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--fileidx;
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changed = load_image();
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}
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break;
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case XK_bracketleft:
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if (fileidx != 0) {
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fileidx = MAX(0, fileidx - 10);
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changed = load_image();
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}
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break;
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case XK_bracketright:
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if (fileidx != filecnt - 1) {
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fileidx = MIN(fileidx + 10, filecnt - 1);
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changed = load_image();
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}
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break;
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case XK_g:
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if (fileidx != 0) {
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fileidx = 0;
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changed = load_image();
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}
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break;
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case XK_G:
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if (fileidx != filecnt - 1) {
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fileidx = filecnt - 1;
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changed = load_image();
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}
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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_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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case XK_W:
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x = win.x + img.x;
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y = 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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/* 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_r:
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changed = load_image();
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break;
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}
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if (changed)
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redraw();
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}
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void on_buttonpress(XButtonEvent *bev) {
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int changed;
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unsigned int mask;
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if (!bev)
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return;
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mask = CLEANMASK(bev->state);
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changed = 0;
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switch (bev->button) {
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case Button1:
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if (fileidx + 1 < filecnt) {
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++fileidx;
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changed = load_image();
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}
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break;
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case Button2:
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mox = bev->x;
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moy = bev->y;
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win_set_cursor(&win, CURSOR_HAND);
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break;
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case Button3:
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if (fileidx > 0) {
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--fileidx;
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changed = load_image();
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}
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break;
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case Button4:
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if (mask == ControlMask)
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changed = img_zoom_in(&img);
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else if (mask == ShiftMask)
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changed = img_pan(&img, &win, PAN_LEFT);
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else
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changed = img_pan(&img, &win, PAN_UP);
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break;
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case Button5:
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if (mask == ControlMask)
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changed = img_zoom_out(&img);
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else if (mask == ShiftMask)
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changed = img_pan(&img, &win, PAN_RIGHT);
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else
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changed = img_pan(&img, &win, PAN_DOWN);
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break;
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case 6:
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changed = img_pan(&img, &win, PAN_LEFT);
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break;
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case 7:
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changed = img_pan(&img, &win, PAN_RIGHT);
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break;
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}
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if (changed)
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redraw();
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}
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void on_motionnotify(XMotionEvent *mev) {
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if (!mev)
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return;
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if (mev->x >= 0 && mev->x <= win.w && mev->y >= 0 && mev->y <= win.h) {
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if (img_move(&img, &win, mev->x - mox, mev->y - moy))
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timeout = 1;
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mox = mev->x;
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moy = mev->y;
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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 t;
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XEvent ev;
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timeout = 0;
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while (1) {
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if (mode == MODE_THUMBS && tns_loaded < filecnt) {
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win_set_cursor(&win, CURSOR_WATCH);
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tns_load(&tns, &win, filenames[tns_loaded++]);
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tns_render(&tns, &win);
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if (tns_loaded == filecnt)
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win_set_cursor(&win, CURSOR_ARROW);
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else if (!XPending(win.env.dpy))
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continue;
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} else if (timeout) {
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t.tv_sec = 0;
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t.tv_usec = 75000;
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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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if (!XPending(win.env.dpy) && !select(xfd + 1, &fds, 0, 0, &t)) {
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timeout = 0;
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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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}
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}
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if (!XNextEvent(win.env.dpy, &ev)) {
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switch (ev.type) {
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case KeyPress:
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on_keypress(&ev.xkey);
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break;
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case ButtonPress:
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on_buttonpress(&ev.xbutton);
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break;
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case ButtonRelease:
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if (ev.xbutton.button == Button2)
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win_set_cursor(&win, CURSOR_ARROW);
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break;
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case MotionNotify:
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on_motionnotify(&ev.xmotion);
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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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timeout = 1;
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if (mode == MODE_NORMAL)
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img.checkpan = 1;
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}
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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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}
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}
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}
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}
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