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/* sxiv: commands.c
* Copyright (c) 2012 Bert Muennich <be.muennich at googlemail.com>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#define _POSIX_C_SOURCE 200112L
#define _IMAGE_CONFIG
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/wait.h>
#include "commands.h"
#include "image.h"
#include "thumbs.h"
#include "util.h"
#include "config.h"
void cleanup(void);
void remove_file(int, bool);
void load_image(int);
void redraw(void);
void reset_cursor(void);
void animate(void);
void set_timeout(timeout_f, int, bool);
void reset_timeout(timeout_f);
extern appmode_t mode;
extern img_t img;
extern tns_t tns;
extern win_t win;
extern fileinfo_t *files;
extern int filecnt, fileidx;
extern int prefix;
const int ss_delays[] = {
1, 2, 3, 5, 10, 15, 20, 30, 60, 120, 180, 300, 600
};
bool it_quit(arg_t a) {
cleanup();
exit(EXIT_SUCCESS);
}
bool it_switch_mode(arg_t a) {
if (mode == MODE_IMAGE) {
if (tns.thumbs == NULL)
tns_init(&tns, filecnt, &win);
img_close(&img, false);
reset_timeout(reset_cursor);
tns.sel = fileidx;
tns.dirty = true;
mode = MODE_THUMB;
} else {
load_image(tns.sel);
mode = MODE_IMAGE;
}
return true;
}
bool it_toggle_fullscreen(arg_t a) {
win_toggle_fullscreen(&win);
/* redraw after next ConfigureNotify event */
set_timeout(redraw, TO_REDRAW_RESIZE, false);
if (mode == MODE_IMAGE)
img.checkpan = true;
else
tns.dirty = true;
return false;
}
bool it_toggle_bar(arg_t a) {
win_toggle_bar(&win);
if (mode == MODE_IMAGE)
img.checkpan = img.dirty = true;
else
tns.dirty = true;
return true;
}
bool it_reload_image(arg_t a) {
if (mode == MODE_IMAGE) {
load_image(fileidx);
} else {
win_set_cursor(&win, CURSOR_WATCH);
if (!tns_load(&tns, tns.sel, &files[tns.sel], true, false)) {
remove_file(tns.sel, false);
tns.dirty = true;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
}
}
return true;
}
bool it_remove_image(arg_t a) {
if (mode == MODE_IMAGE) {
remove_file(fileidx, true);
load_image(fileidx >= filecnt ? filecnt - 1 : fileidx);
return true;
} else if (tns.sel < tns.cnt) {
remove_file(tns.sel, true);
tns.dirty = true;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
return true;
} else {
return false;
}
}
bool i_navigate(arg_t a) {
long n = (long) a;
if (mode == MODE_IMAGE) {
if (prefix > 0)
n *= prefix;
n += fileidx;
if (n < 0)
n = 0;
if (n >= filecnt)
n = filecnt - 1;
if (n != fileidx) {
load_image(n);
return true;
}
}
return false;
}
bool it_first(arg_t a) {
if (mode == MODE_IMAGE && fileidx != 0) {
load_image(0);
return true;
} else if (mode == MODE_THUMB && tns.sel != 0) {
tns.sel = 0;
tns.dirty = true;
return true;
} else {
return false;
}
}
bool it_n_or_last(arg_t a) {
int n = prefix != 0 && prefix - 1 < filecnt ? prefix - 1 : filecnt - 1;
if (mode == MODE_IMAGE && fileidx != n) {
load_image(n);
return true;
} else if (mode == MODE_THUMB && tns.sel != n) {
tns.sel = n;
tns.dirty = true;
return true;
} else {
return false;
}
}
bool i_navigate_frame(arg_t a) {
if (mode == MODE_IMAGE && !img.multi.animate)
return img_frame_navigate(&img, (long) a);
else
return false;
}
bool i_toggle_animation(arg_t a) {
if (mode != MODE_IMAGE)
return false;
if (img.multi.animate) {
reset_timeout(animate);
img.multi.animate = false;
} else if (img_frame_animate(&img, true)) {
set_timeout(animate, img.multi.frames[img.multi.sel].delay, true);
}
return true;
}
bool it_scroll_move(arg_t a) {
direction_t dir = (direction_t) a;
if (mode == MODE_IMAGE)
return img_pan(&img, dir, prefix);
else
return tns_move_selection(&tns, dir);
}
bool it_scroll_screen(arg_t a) {
direction_t dir = (direction_t) a;
if (mode == MODE_IMAGE)
return img_pan(&img, dir, -1);
else
return tns_scroll(&tns, dir, true);
}
bool i_scroll_to_edge(arg_t a) {
direction_t dir = (direction_t) a;
if (mode == MODE_IMAGE)
return img_pan_edge(&img, dir);
else
return false;
}
/* Xlib helper function for i_drag() */
Bool is_motionnotify(Display *d, XEvent *e, XPointer a) {
return e != NULL && e->type == MotionNotify;
}
bool 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;
if (mode != MODE_IMAGE)
return false;
if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &ox, &oy, &ui))
return false;
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, dx, dy)) {
img_render(&img);
win_draw(&win);
}
dx = dy = 0;
}
}
win_set_cursor(&win, CURSOR_ARROW);
set_timeout(reset_cursor, TO_CURSOR_HIDE, true);
reset_timeout(redraw);
return false;
}
bool i_zoom(arg_t a) {
long scale = (long) a;
if (mode != MODE_IMAGE)
return false;
if (scale > 0)
return img_zoom_in(&img);
else if (scale < 0)
return img_zoom_out(&img);
else
return false;
}
bool i_set_zoom(arg_t a) {
if (mode == MODE_IMAGE)
return img_zoom(&img, (prefix ? prefix : (long) a) / 100.0);
else
return false;
}
bool i_fit_to_win(arg_t a) {
bool ret = false;
if (mode == MODE_IMAGE) {
if ((ret = img_fit_win(&img)))
img_center(&img);
}
return ret;
}
bool i_fit_to_img(arg_t a) {
int x, y;
unsigned int w, h;
bool ret = false;
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;
img.dirty = true;
}
}
return ret;
}
bool i_rotate(arg_t a) {
direction_t dir = (direction_t) a;
if (mode == MODE_IMAGE) {
if (dir == DIR_LEFT) {
img_rotate_left(&img);
return true;
} else if (dir == DIR_RIGHT) {
img_rotate_right(&img);
return true;
}
}
return false;
}
bool i_toggle_antialias(arg_t a) {
if (mode == MODE_IMAGE) {
img_toggle_antialias(&img);
return true;
} else {
return false;
}
}
bool it_toggle_alpha(arg_t a) {
img.alpha = tns.alpha = !img.alpha;
if (mode == MODE_IMAGE)
img.dirty = true;
else
tns.dirty = true;
return true;
}
bool it_open_with(arg_t a) {
const char *prog = (const char*) a;
pid_t pid;
if (prog == NULL || *prog == '\0')
return false;
if ((pid = fork()) == 0) {
execlp(prog, prog,
files[mode == MODE_IMAGE ? fileidx : tns.sel].path, NULL);
warn("could not exec: %s", prog);
exit(EXIT_FAILURE);
} else if (pid < 0) {
warn("could not fork. program was: %s", prog);
}
return false;
}
bool it_shell_cmd(arg_t a) {
int n, status;
const char *cmdline = (const char*) a;
pid_t pid;
if (cmdline == NULL || *cmdline == '\0')
return false;
n = mode == MODE_IMAGE ? fileidx : tns.sel;
if (setenv("SXIV_IMG", files[n].path, 1) < 0) {
warn("could not set env.-variable: SXIV_IMG. command line was: %s",
cmdline);
return false;
}
if ((pid = fork()) == 0) {
execl("/bin/sh", "/bin/sh", "-c", cmdline, NULL);
warn("could not exec: /bin/sh. command line was: %s", cmdline);
exit(EXIT_FAILURE);
} else if (pid < 0) {
warn("could not fork. command line was: %s", cmdline);
return false;
}
win_set_cursor(&win, CURSOR_WATCH);
waitpid(pid, &status, 0);
if (WIFEXITED(status) == 0 || WEXITSTATUS(status) != 0)
warn("child exited with non-zero return value: %d. command line was: %s",
WEXITSTATUS(status), cmdline);
if (mode == MODE_IMAGE) {
img_close(&img, true);
load_image(fileidx);
}
if (!tns_load(&tns, n, &files[n], true, mode == MODE_IMAGE) &&
mode == MODE_THUMB)
{
remove_file(tns.sel, false);
tns.dirty = true;
if (tns.sel >= tns.cnt)
tns.sel = tns.cnt - 1;
}
return true;
}
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