nsxiv/commands.c

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/* sxiv: commands.c
* Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
*
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* 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.
*
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* 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.
*
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* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#define _POSIX_C_SOURCE 200112L /* for setenv(3) */
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include "commands.h"
#include "image.h"
#include "thumbs.h"
#include "types.h"
#include "util.h"
void cleanup();
void remove_file(int, unsigned char);
void load_image(int);
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void redraw();
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void reset_cursor();
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void animate();
void set_timeout(timeout_f, int, int);
void reset_timeout(timeout_f);
extern appmode_t mode;
extern img_t img;
extern tns_t tns;
extern win_t win;
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extern fileinfo_t *files;
extern int filecnt, fileidx;
int it_quit(arg_t a) {
cleanup();
exit(0);
}
int it_switch_mode(arg_t a) {
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if (mode == MODE_IMAGE) {
if (!tns.thumbs)
tns_init(&tns, filecnt);
img_close(&img, 0);
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reset_timeout(reset_cursor);
tns.sel = fileidx;
tns.dirty = 1;
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mode = MODE_THUMB;
} else {
load_image(tns.sel);
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mode = MODE_IMAGE;
}
return 1;
}
int it_toggle_fullscreen(arg_t a) {
win_toggle_fullscreen(&win);
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set_timeout(redraw, TO_REDRAW_RESIZE, 0);
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if (mode == MODE_IMAGE)
img.checkpan = 1;
else
tns.dirty = 1;
return 0;
}
int it_reload_image(arg_t a) {
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if (mode == MODE_IMAGE) {
load_image(fileidx);
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} else {
win_set_cursor(&win, CURSOR_WATCH);
if (!tns_load(&tns, tns.sel, &files[tns.sel], True, False)) {
remove_file(tns.sel, 0);
tns.dirty = 1;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
}
}
return 1;
}
int it_remove_image(arg_t a) {
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if (mode == MODE_IMAGE) {
remove_file(fileidx, 1);
load_image(fileidx >= filecnt ? filecnt - 1 : fileidx);
return 1;
} else if (tns.sel < tns.cnt) {
remove_file(tns.sel, 1);
tns.dirty = 1;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
return 1;
} else {
return 0;
}
}
int i_navigate(arg_t a) {
long n = (long) a;
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if (mode == MODE_IMAGE) {
n += fileidx;
if (n < 0)
n = 0;
if (n >= filecnt)
n = filecnt - 1;
if (n != fileidx) {
load_image(n);
return 1;
}
}
return 0;
}
int it_first(arg_t a) {
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if (mode == MODE_IMAGE && fileidx != 0) {
load_image(0);
return 1;
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} else if (mode == MODE_THUMB && tns.sel != 0) {
tns.sel = 0;
tns.dirty = 1;
return 1;
} else {
return 0;
}
}
int it_last(arg_t a) {
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if (mode == MODE_IMAGE && fileidx != filecnt - 1) {
load_image(filecnt - 1);
return 1;
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} else if (mode == MODE_THUMB && tns.sel != tns.cnt - 1) {
tns.sel = tns.cnt - 1;
tns.dirty = 1;
return 1;
} else {
return 0;
}
}
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int i_navigate_frame(arg_t a) {
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if (mode == MODE_IMAGE && !img.multi.animate)
return img_frame_navigate(&img, (long) a);
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else
return 0;
}
int i_toggle_animation(arg_t a) {
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int delay;
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if (mode != MODE_IMAGE)
return 0;
if (img.multi.animate) {
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reset_timeout(animate);
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img.multi.animate = 0;
return 0;
} else {
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delay = img_frame_animate(&img, 1);
set_timeout(animate, delay, 1);
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return 1;
}
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}
int it_move(arg_t a) {
direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
return img_pan(&img, &win, dir, 0);
else
return tns_move_selection(&tns, &win, dir);
}
int i_pan_screen(arg_t a) {
direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
return img_pan(&img, &win, dir, 1);
else
return 0;
}
int i_pan_edge(arg_t a) {
direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
return img_pan_edge(&img, &win, dir);
else
return 0;
}
/* Xlib helper function for i_drag() */
Bool is_motionnotify(Display *d, XEvent *e, XPointer a) {
return e != NULL && e->type == MotionNotify;
}
int i_drag(arg_t a) {
int dx = 0, dy = 0, i, ox, oy, x, y;
unsigned int ui;
Bool dragging = True, next = False;
XEvent e;
Window w;
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if (mode != MODE_IMAGE)
return 0;
if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &ox, &oy, &ui))
return 0;
win_set_cursor(&win, CURSOR_HAND);
while (dragging) {
if (!next)
XMaskEvent(win.env.dpy,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
switch (e.type) {
case ButtonPress:
case ButtonRelease:
dragging = False;
break;
case MotionNotify:
x = e.xmotion.x;
y = e.xmotion.y;
if (x >= 0 && x <= win.w && y >= 0 && y <= win.h) {
dx += x - ox;
dy += y - oy;
}
ox = x;
oy = y;
break;
}
if (dragging)
next = XCheckIfEvent(win.env.dpy, &e, is_motionnotify, None);
if ((!dragging || !next) && (dx != 0 || dy != 0)) {
if (img_move(&img, &win, dx, dy))
img_render(&img, &win);
dx = dy = 0;
}
}
win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(reset_cursor, TO_CURSOR_HIDE, 1);
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reset_timeout(redraw);
return 0;
}
int i_zoom(arg_t a) {
long scale = (long) a;
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if (mode != MODE_IMAGE)
return 0;
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if (scale > 0)
return img_zoom_in(&img, &win);
else if (scale < 0)
return img_zoom_out(&img, &win);
else
return img_zoom(&img, &win, 1.0);
}
int i_fit_to_win(arg_t a) {
int ret;
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if (mode == MODE_IMAGE) {
if ((ret = img_fit_win(&img, &win)))
img_center(&img, &win);
return ret;
} else {
return 0;
}
}
int i_fit_to_img(arg_t a) {
int ret, x, y;
unsigned int w, h;
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if (mode == MODE_IMAGE) {
x = MAX(0, win.x + img.x);
y = MAX(0, win.y + img.y);
w = img.w * img.zoom;
h = img.h * img.zoom;
if ((ret = win_moveresize(&win, x, y, w, h))) {
img.x = x - win.x;
img.y = y - win.y;
}
return ret;
} else {
return 0;
}
}
int i_rotate(arg_t a) {
direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE) {
if (dir == DIR_LEFT) {
img_rotate_left(&img, &win);
return 1;
} else if (dir == DIR_RIGHT) {
img_rotate_right(&img, &win);
return 1;
}
}
return 0;
}
int i_toggle_antialias(arg_t a) {
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if (mode == MODE_IMAGE) {
img_toggle_antialias(&img);
return 1;
} else {
return 0;
}
}
int i_toggle_alpha(arg_t a) {
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if (mode == MODE_IMAGE) {
img.alpha ^= 1;
return 1;
} else {
return 0;
}
}
int it_open_with(arg_t a) {
const char *prog = (const char*) a;
pid_t pid;
if (!prog || !*prog)
return 0;
if((pid = fork()) == 0) {
execlp(prog, prog,
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files[mode == MODE_IMAGE ? fileidx : tns.sel].path, NULL);
warn("could not exec: %s", prog);
exit(1);
} else if (pid < 0) {
warn("could not fork. program was: %s", prog);
}
return 0;
}
int it_shell_cmd(arg_t a) {
int n, status;
const char *cmdline = (const char*) a;
pid_t pid;
if (!cmdline || !*cmdline)
return 0;
n = mode == MODE_IMAGE ? fileidx : tns.sel;
if (setenv("SXIV_IMG", files[n].path, 1) < 0) {
warn("could not change env.-variable: SXIV_IMG. command line was: %s",
cmdline);
return 0;
}
if ((pid = fork()) == 0) {
execl("/bin/sh", "/bin/sh", "-c", cmdline, NULL);
warn("could not exec: /bin/sh");
exit(1);
} else if (pid < 0) {
warn("could not fork. command line was: %s", cmdline);
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return 0;
}
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win_set_cursor(&win, CURSOR_WATCH);
waitpid(pid, &status, 0);
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
warn("child exited with non-zero return value: %d. command line was: %s",
WEXITSTATUS(status), cmdline);
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if (mode == MODE_IMAGE) {
img_close(&img, 1);
load_image(fileidx);
}
if (!tns_load(&tns, n, &files[n], True, mode == MODE_IMAGE) &&
mode == MODE_THUMB)
{
remove_file(tns.sel, 0);
tns.dirty = 1;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
}
return 1;
}