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/* sxiv: main.c
* Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <stdio.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include "sxiv.h"
#include "image.h"
#include "options.h"
#include "window.h"
void on_keypress(XEvent*);
void on_configurenotify(XEvent*);
void update_title();
static void (*handler[LASTEvent])(XEvent*) = {
[KeyPress] = on_keypress,
[ConfigureNotify] = on_configurenotify
};
img_t img;
win_t win;
const char **filenames;
unsigned int filecnt;
unsigned int fileidx;
#define TITLE_LEN 256
char win_title[TITLE_LEN];
void run() {
XEvent ev;
while (!XNextEvent(win.env.dpy, &ev)) {
if (handler[ev.type])
handler[ev.type](&ev);
}
}
int main(int argc, char **argv) {
int i;
parse_options(argc, argv);
if (!options->filecnt) {
print_usage();
exit(1);
}
if (!(filenames = (const char**) malloc(options->filecnt * sizeof(char*))))
DIE("could not allocate memory");
fileidx = 0;
filecnt = 0;
for (i = 0; i < options->filecnt; ++i) {
if (!(img_load(&img, options->filenames[i]) < 0))
filenames[filecnt++] = options->filenames[i];
}
if (!filecnt) {
fprintf(stderr, "sxiv: no valid image filename given, aborting\n");
exit(1);
}
img.zoom = 1.0;
img.scalemode = SCALE_MODE;
win.w = WIN_WIDTH;
win.h = WIN_HEIGHT;
win_open(&win);
imlib_init(&win);
img_load(&img, filenames[fileidx]);
img_display(&img, &win);
update_title();
run();
cleanup();
return 0;
}
void cleanup() {
static int in = 0;
if (!in++) {
imlib_destroy();
win_close(&win);
}
}
void on_keypress(XEvent *ev) {
KeySym keysym;
if (!ev)
return;
keysym = XLookupKeysym(&ev->xkey, 0);
switch (keysym) {
case XK_Escape:
cleanup();
exit(1);
case XK_q:
cleanup();
exit(0);
case XK_n:
case XK_space:
if (fileidx + 1 < filecnt) {
img_load(&img, filenames[++fileidx]);
img_display(&img, &win);
update_title();
}
break;
case XK_p:
case XK_BackSpace:
if (fileidx > 0) {
img_load(&img, filenames[--fileidx]);
img_display(&img, &win);
update_title();
}
break;
case XK_plus:
case XK_equal:
if (img_zoom_in(&img)) {
img_render(&img, &win);
update_title();
}
break;
case XK_minus:
if (img_zoom_out(&img)) {
img_render(&img, &win);
update_title();
}
break;
}
}
void on_configurenotify(XEvent *ev) {
if (!ev)
return;
win_configure(&win, &ev->xconfigure);
}
void update_title() {
int n;
n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> %s", fileidx + 1,
filecnt, (int) (img.zoom * 100.0), filenames[fileidx]);
if (n >= TITLE_LEN) {
win_title[TITLE_LEN - 2] = '.';
win_title[TITLE_LEN - 3] = '.';
win_title[TITLE_LEN - 4] = '.';
}
win_set_title(&win, win_title);
}
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