Put event handling back into main.c; events -> commands

1 files changed, 400 insertions, 0 deletions

diff --git a/commands.c b/commands.c
new file mode 100644
index 0000000..7dbd019
--- /dev/null
+++ b/commands.c
@@ -0,0 +1,400 @@
+/* sxiv: commands.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., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301, USA.
+ */
+
+#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);
+
+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 timo_cursor;
+extern int timo_redraw;
+
+int it_quit(arg_t a) {
+	cleanup();
+	exit(0);
+}
+
+int it_switch_mode(arg_t a) {
+	if (mode == MODE_IMAGE) {
+		if (!tns.thumbs)
+			tns_init(&tns, filecnt);
+		img_close(&img, 0);
+		win_set_cursor(&win, CURSOR_ARROW);
+		timo_cursor = 0;
+		tns.sel = fileidx;
+		tns.dirty = 1;
+		mode = MODE_THUMB;
+	} else {
+		timo_cursor = TO_CURSOR_HIDE;
+		load_image(tns.sel);
+		mode = MODE_IMAGE;
+	}
+	return 1;
+}
+
+int it_toggle_fullscreen(arg_t a) {
+	win_toggle_fullscreen(&win);
+	if (mode == MODE_IMAGE)
+		img.checkpan = 1;
+	else
+		tns.dirty = 1;
+	timo_redraw = TO_WIN_RESIZE;
+	return 0;
+}
+
+int it_reload_image(arg_t a) {
+	if (mode == MODE_IMAGE) {
+		load_image(fileidx);
+	} else 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) {
+	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) {
+	int n = (int) a;
+
+	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) {
+	if (mode == MODE_IMAGE && fileidx != 0) {
+		load_image(0);
+		return 1;
+	} 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) {
+	if (mode == MODE_IMAGE && fileidx != filecnt - 1) {
+		load_image(filecnt - 1);
+		return 1;
+	} else if (mode == MODE_THUMB && tns.sel != tns.cnt - 1) {
+		tns.sel = tns.cnt - 1;
+		tns.dirty = 1;
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+int it_move(arg_t a) {
+	direction_t dir = (direction_t) a;
+
+	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;
+
+	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;
+
+	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;
+
+	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);
+	timo_cursor = TO_CURSOR_HIDE;
+	timo_redraw = 0;
+
+	return 0;
+}
+
+int i_zoom(arg_t a) {
+	int scale = (int) a;
+
+	if (mode != MODE_IMAGE)
+		return 0;
+	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;
+
+	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;
+
+	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;
+
+	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) {
+	if (mode == MODE_IMAGE) {
+		img_toggle_antialias(&img);
+		return 1;
+	} else {
+		return 0;
+	}
+}
+
+int i_toggle_alpha(arg_t a) {
+	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,
+		       files[mode == MODE_IMAGE ? fileidx : tns.sel].path, NULL);
+		warn("could not exec: %s", prog);
+		exit(1);
+	} else if (pid < 0) {
+		warn("could not for. program was: %s", prog);
+	}
+	
+	return 0;
+}
+
+int it_shell_cmd(arg_t a) {
+	const char *cline = (const char*) a;
+	char *cn, *cmdline;
+	const char *co, *fpath;
+	int fpcnt, fplen, status;
+	pid_t pid;
+
+	if (!cline || !*cline)
+		return 0;
+
+	/* build command line: */
+	fpcnt = 0;
+	co = cline - 1;
+	while ((co = strchr(co + 1, '#')))
+		fpcnt++;
+	if (!fpcnt)
+		return 0;
+	fpath = files[mode == MODE_IMAGE ? fileidx : tns.sel].path;
+	fplen = strlen(fpath);
+	cn = cmdline = (char*) s_malloc((strlen(cline) + fpcnt * (fplen + 2)) *
+	                                sizeof(char));
+	/* replace all '#' with filename: */
+	for (co = cline; *co; co++) {
+		if (*co == '#') {
+			*cn++ = '"';
+			strcpy(cn, fpath);
+			cn += fplen;
+			*cn++ = '"';
+		} else {
+			*cn++ = *co;
+		}
+	}
+	*cn = '\0';
+
+	win_set_cursor(&win, CURSOR_WATCH);
+
+	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);
+		goto end;
+	}
+
+	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);
+	
+	if (mode == MODE_IMAGE) {
+		if (fileidx < tns.cnt)
+			tns_load(&tns, fileidx, &files[fileidx], False, True);
+		img_close(&img, 1);
+		load_image(fileidx);
+	} else {
+		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;
+		}
+	}
+
+end:
+	if (mode == MODE_THUMB)
+		win_set_cursor(&win, CURSOR_ARROW);
+	/* else: cursor gets reset in redraw() */
+
+	free(cmdline);
+
+	return 1;
+}