408 lines
8.0 KiB
C
408 lines
8.0 KiB
C
/* sxiv: commands.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
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA.
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*/
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#define _POSIX_C_SOURCE 200112L /* for setenv(3) */
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include "commands.h"
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#include "image.h"
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#include "thumbs.h"
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#include "types.h"
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#include "util.h"
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void cleanup();
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void remove_file(int, unsigned char);
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void load_image(int);
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void redraw();
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void hide_cursor();
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void animate();
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void set_timeout(timeout_f, int, int);
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void reset_timeout(timeout_f);
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extern appmode_t mode;
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extern img_t img;
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extern tns_t tns;
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extern win_t win;
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extern fileinfo_t *files;
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extern int filecnt, fileidx;
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int it_quit(arg_t a) {
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cleanup();
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exit(0);
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}
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int it_switch_mode(arg_t a) {
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if (mode == MODE_IMAGE) {
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if (!tns.thumbs)
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tns_init(&tns, filecnt);
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img_close(&img, 0);
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win_set_cursor(&win, CURSOR_ARROW);
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reset_timeout(hide_cursor);
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tns.sel = fileidx;
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tns.dirty = 1;
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mode = MODE_THUMB;
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} else {
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load_image(tns.sel);
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mode = MODE_IMAGE;
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}
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return 1;
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}
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int it_toggle_fullscreen(arg_t a) {
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win_toggle_fullscreen(&win);
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set_timeout(redraw, TO_REDRAW_RESIZE, 0);
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if (mode == MODE_IMAGE)
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img.checkpan = 1;
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else
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tns.dirty = 1;
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return 0;
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}
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int it_reload_image(arg_t a) {
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if (mode == MODE_IMAGE) {
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load_image(fileidx);
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} else if (!tns_load(&tns, tns.sel, &files[tns.sel], True, False)) {
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remove_file(tns.sel, 0);
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tns.dirty = 1;
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if (tns.sel >= tns.cnt)
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tns.sel = tns.cnt - 1;
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}
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return 1;
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}
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int it_remove_image(arg_t a) {
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if (mode == MODE_IMAGE) {
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remove_file(fileidx, 1);
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load_image(fileidx >= filecnt ? filecnt - 1 : fileidx);
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return 1;
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} else if (tns.sel < tns.cnt) {
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remove_file(tns.sel, 1);
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tns.dirty = 1;
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if (tns.sel >= tns.cnt)
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tns.sel = tns.cnt - 1;
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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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int i_navigate(arg_t a) {
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int n = (int) a;
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if (mode == MODE_IMAGE) {
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n += fileidx;
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if (n < 0)
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n = 0;
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if (n >= filecnt)
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n = filecnt - 1;
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if (n != fileidx) {
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load_image(n);
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return 1;
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}
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}
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return 0;
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}
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int it_first(arg_t a) {
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if (mode == MODE_IMAGE && fileidx != 0) {
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load_image(0);
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return 1;
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} else if (mode == MODE_THUMB && tns.sel != 0) {
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tns.sel = 0;
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tns.dirty = 1;
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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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int it_last(arg_t a) {
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if (mode == MODE_IMAGE && fileidx != filecnt - 1) {
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load_image(filecnt - 1);
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return 1;
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} else if (mode == MODE_THUMB && tns.sel != tns.cnt - 1) {
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tns.sel = tns.cnt - 1;
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tns.dirty = 1;
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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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int i_navigate_frame(arg_t a) {
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if (mode == MODE_IMAGE && !img.multi.animate)
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return img_frame_navigate(&img, (int) a);
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else
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return 0;
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}
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int i_toggle_animation(arg_t a) {
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int delay;
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if (mode != MODE_IMAGE)
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return 0;
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if (img.multi.animate) {
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reset_timeout(animate);
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img.multi.animate = 0;
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return 0;
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} else {
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delay = img_frame_animate(&img, 1);
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set_timeout(animate, delay, 1);
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return 1;
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}
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}
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int it_move(arg_t a) {
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direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
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return img_pan(&img, &win, dir, 0);
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else
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return tns_move_selection(&tns, &win, dir);
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}
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int i_pan_screen(arg_t a) {
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direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
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return img_pan(&img, &win, dir, 1);
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else
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return 0;
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}
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int i_pan_edge(arg_t a) {
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direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE)
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return img_pan_edge(&img, &win, dir);
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else
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return 0;
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}
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/* Xlib helper function for i_drag() */
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Bool is_motionnotify(Display *d, XEvent *e, XPointer a) {
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return e != NULL && e->type == MotionNotify;
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}
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int i_drag(arg_t a) {
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int dx = 0, dy = 0, i, ox, oy, x, y;
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unsigned int ui;
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Bool dragging = True, next = False;
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XEvent e;
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Window w;
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if (mode != MODE_IMAGE)
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return 0;
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if (!XQueryPointer(win.env.dpy, win.xwin, &w, &w, &i, &i, &ox, &oy, &ui))
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return 0;
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win_set_cursor(&win, CURSOR_HAND);
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while (dragging) {
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if (!next)
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XMaskEvent(win.env.dpy,
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ButtonPressMask | ButtonReleaseMask | PointerMotionMask, &e);
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switch (e.type) {
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case ButtonPress:
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case ButtonRelease:
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dragging = False;
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break;
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case MotionNotify:
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x = e.xmotion.x;
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y = e.xmotion.y;
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if (x >= 0 && x <= win.w && y >= 0 && y <= win.h) {
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dx += x - ox;
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dy += y - oy;
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}
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ox = x;
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oy = y;
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break;
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}
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if (dragging)
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next = XCheckIfEvent(win.env.dpy, &e, is_motionnotify, None);
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if ((!dragging || !next) && (dx != 0 || dy != 0)) {
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if (img_move(&img, &win, dx, dy))
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img_render(&img, &win);
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dx = dy = 0;
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}
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}
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win_set_cursor(&win, CURSOR_ARROW);
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set_timeout(hide_cursor, TO_CURSOR_HIDE, 1);
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reset_timeout(redraw);
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return 0;
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}
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int i_zoom(arg_t a) {
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int scale = (int) a;
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if (mode != MODE_IMAGE)
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return 0;
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if (scale > 0)
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return img_zoom_in(&img, &win);
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else if (scale < 0)
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return img_zoom_out(&img, &win);
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else
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return img_zoom(&img, &win, 1.0);
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}
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int i_fit_to_win(arg_t a) {
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int ret;
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if (mode == MODE_IMAGE) {
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if ((ret = img_fit_win(&img, &win)))
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img_center(&img, &win);
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return ret;
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} else {
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return 0;
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}
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}
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int i_fit_to_img(arg_t a) {
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int ret, x, y;
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unsigned int w, h;
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if (mode == MODE_IMAGE) {
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x = MAX(0, win.x + img.x);
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y = MAX(0, 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 ((ret = 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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return ret;
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} else {
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return 0;
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}
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}
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int i_rotate(arg_t a) {
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direction_t dir = (direction_t) a;
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if (mode == MODE_IMAGE) {
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if (dir == DIR_LEFT) {
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img_rotate_left(&img, &win);
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return 1;
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} else if (dir == DIR_RIGHT) {
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img_rotate_right(&img, &win);
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return 1;
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}
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}
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return 0;
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}
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int i_toggle_antialias(arg_t a) {
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if (mode == MODE_IMAGE) {
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img_toggle_antialias(&img);
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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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int i_toggle_alpha(arg_t a) {
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if (mode == MODE_IMAGE) {
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img.alpha ^= 1;
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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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int it_open_with(arg_t a) {
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const char *prog = (const char*) a;
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pid_t pid;
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if (!prog || !*prog)
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return 0;
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if((pid = fork()) == 0) {
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execlp(prog, prog,
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files[mode == MODE_IMAGE ? fileidx : tns.sel].path, NULL);
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warn("could not exec: %s", prog);
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exit(1);
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} else if (pid < 0) {
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warn("could not fork. program was: %s", prog);
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}
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return 0;
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}
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int it_shell_cmd(arg_t a) {
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int n, status;
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const char *cmdline = (const char*) a;
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pid_t pid;
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if (!cmdline || !*cmdline)
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return 0;
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n = mode == MODE_IMAGE ? fileidx : tns.sel;
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if (setenv("SXIV_IMG", files[n].path, 1) < 0) {
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warn("could not change env.-variable: SXIV_IMG. command line was: %s",
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cmdline);
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return 0;
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}
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win_set_cursor(&win, CURSOR_WATCH);
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if ((pid = fork()) == 0) {
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execl("/bin/sh", "/bin/sh", "-c", cmdline, NULL);
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warn("could not exec: /bin/sh");
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exit(1);
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} else if (pid < 0) {
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warn("could not fork. command line was: %s", cmdline);
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goto end;
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}
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waitpid(pid, &status, 0);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
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warn("child exited with non-zero return value: %d. command line was: %s",
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WEXITSTATUS(status), cmdline);
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if (mode == MODE_IMAGE) {
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img_close(&img, 1);
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load_image(fileidx);
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}
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if (!tns_load(&tns, n, &files[n], True, mode == MODE_IMAGE) &&
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mode == MODE_THUMB)
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{
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remove_file(tns.sel, 0);
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tns.dirty = 1;
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if (tns.sel >= tns.cnt)
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tns.sel = tns.cnt - 1;
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}
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end:
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if (mode == MODE_THUMB)
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win_set_cursor(&win, CURSOR_ARROW);
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/* else: cursor gets reset in redraw() */
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return 1;
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}
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