464 lines
9.1 KiB
C
464 lines
9.1 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 "sxiv.h"
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#include "image.h"
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#include "window.h"
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void* s_malloc(size_t);
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void* s_realloc(void*, size_t);
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void on_keypress(XEvent*);
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void on_buttonpress(XEvent*);
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void on_buttonrelease(XEvent*);
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void on_motionnotify(XEvent*);
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void on_configurenotify(XEvent*);
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void update_title();
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void check_append(const char*);
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void read_dir_rec(const char*);
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static void (*handler[LASTEvent])(XEvent*) = {
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[KeyPress] = on_keypress,
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[ButtonPress] = on_buttonpress,
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[ButtonRelease] = on_buttonrelease,
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[MotionNotify] = on_motionnotify,
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[ConfigureNotify] = on_configurenotify
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};
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img_t img;
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win_t win;
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#define DNAME_CNT 512
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#define FNAME_CNT 4096
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const char **filenames;
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int filecnt, fileidx;
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unsigned char timeout;
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int mox;
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int moy;
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#define TITLE_LEN 256
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char win_title[TITLE_LEN];
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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 (timeout) {
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t.tv_sec = 0;
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t.tv_usec = 250;
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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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img_render(&img, &win);
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timeout = 0;
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}
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}
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if (!XNextEvent(win.env.dpy, &ev) && handler[ev.type])
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handler[ev.type](&ev);
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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)
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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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for (i = 0; i < options->filecnt; ++i) {
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filename = options->filenames[i];
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if (stat(filename, &fstats)) {
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WARN("could not stat file: %s", filename);
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} else if (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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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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img_load(&img, filenames[fileidx]);
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img_render(&img, &win);
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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 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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win_close(&win);
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}
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}
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void on_keypress(XEvent *ev) {
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char key;
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KeySym ksym;
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int changed;
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if (!ev)
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return;
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XLookupString(&ev->xkey, &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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changed = img_load(&img, filenames[++fileidx]);
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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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changed = img_load(&img, filenames[--fileidx]);
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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 = img_load(&img, filenames[fileidx]);
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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 = img_load(&img, filenames[fileidx]);
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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 = img_load(&img, filenames[fileidx]);
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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 = img_load(&img, filenames[fileidx]);
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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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/* 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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changed = img_rotate_left(&img, &win);
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break;
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case XK_greater:
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changed = img_rotate_right(&img, &win);
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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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break;
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/* miscellaneous */
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case XK_a:
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changed = img_toggle_antialias(&img);
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break;
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case XK_r:
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changed = img_load(&img, filenames[fileidx]);
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break;
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}
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if (changed) {
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img_render(&img, &win);
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update_title();
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timeout = 0;
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}
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}
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void on_buttonpress(XEvent *ev) {
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int changed;
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unsigned int mask;
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if (!ev)
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return;
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mask = CLEANMASK(ev->xbutton.state);
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changed = 0;
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switch (ev->xbutton.button) {
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case Button1:
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if (fileidx + 1 < filecnt) {
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img_load(&img, filenames[++fileidx]);
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changed = 1;
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}
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break;
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case Button2:
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mox = ev->xbutton.x;
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moy = ev->xbutton.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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img_load(&img, filenames[--fileidx]);
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changed = 1;
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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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img_render(&img, &win);
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update_title();
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timeout = 0;
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}
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}
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void on_buttonrelease(XEvent *ev) {
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if (!ev)
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return;
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if (ev->xbutton.button == Button2)
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win_set_cursor(&win, CURSOR_ARROW);
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}
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void on_motionnotify(XEvent *ev) {
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XMotionEvent *m;
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if (!ev)
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return;
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m = &ev->xmotion;
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if (m->x >= 0 && m->x <= win.w && m->y >= 0 && m->y <= win.h) {
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if (img_move(&img, &win, m->x - mox, m->y - moy))
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timeout = 1;
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mox = m->x;
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moy = m->y;
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}
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}
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void on_configurenotify(XEvent *ev) {
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if (!ev)
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return;
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if (win_configure(&win, &ev->xconfigure)) {
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img.checkpan = 1;
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timeout = 1;
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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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n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> %s", fileidx + 1,
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filecnt, (int) (img.zoom * 100.0), filenames[fileidx]);
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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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void check_append(const char *filename) {
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if (!filename)
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return;
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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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}
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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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DIE("could not open directory: %s", dirname);
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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)) {
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WARN("could not stat file: %s", filename);
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free(filename);
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} else if (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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check_append(filename);
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}
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}
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closedir(dir);
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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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void* s_malloc(size_t size) {
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void *ptr;
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if (!(ptr = malloc(size)))
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DIE("could not allocate memory");
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return ptr;
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}
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void* s_realloc(void *ptr, size_t size) {
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if (!(ptr = realloc(ptr, size)))
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DIE("could not allocate memory");
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return ptr;
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}
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