Option handling, merged app.c & events.c into main.c

app.h

@@ -1,39 +0,0 @@
-/* sxiv: app.h
- * 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.
- */
-
-#ifndef APP_H
-#define APP_H
-
-#include "image.h"
-#include "window.h"
-
-typedef struct app_s {
-	char **filenames;
-	unsigned int filecnt;
-	unsigned int fileidx;
-	img_t img;
-	win_t win;
-} app_t;
-
-void app_init(app_t*);
-void app_run(app_t*);
-void app_quit(app_t*);
-
-void app_load_image(app_t*);
-
-#endif /* APP_H */

events.c

@@ -1,72 +0,0 @@
-/* sxiv: events.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 <X11/Xlib.h>
-#include <X11/keysym.h>
-
-#include "events.h"
-#include "window.h"
-
-void on_keypress(app_t*, XEvent*);
-void on_configurenotify(app_t*, XEvent*);
-void on_expose(app_t*, XEvent*);
-
-static void (*handler[LASTEvent])(app_t*, XEvent*) = {
-	[Expose] = on_expose,
-	[ConfigureNotify] = on_configurenotify,
-	[KeyPress] = on_keypress
-};
-
-void event_loop(app_t *app) {
-	XEvent ev;
-
-	while (!XNextEvent(app->win.env.dpy, &ev)) {
-		if (handler[ev.type])
-			handler[ev.type](app, &ev);
-	}
-}
-
-void on_keypress(app_t *app, XEvent *ev) {
-	KeySym keysym;
-
-	if (!app || !ev)
-		return;
-	
-	keysym = XLookupKeysym(&ev->xkey, 0);
-
-	switch (keysym) {
-		case XK_Escape:
-			app_quit(app);
-			exit(1);
-		case XK_q:
-			app_quit(app);
-			exit(0);
-	}
-}
-
-void on_configurenotify(app_t *app, XEvent *ev) {
-	if (!app || !ev)
-		return;
-	
-	win_configure(&app->win, &ev->xconfigure);
-}
-
-void on_expose(app_t *app, XEvent *ev) {
-}

image.c

@@ -19,6 +19,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 
+#include <Imlib2.h>
+
 #include "sxiv.h"
 #include "image.h"
 
@@ -32,7 +34,12 @@ void imlib_init(win_t *win) {
 	imlib_context_set_drawable(win->xwin);
 }
 
-void img_load(img_t *img, char *filename) {
+void imlib_destroy() {
+	if (imlib_context_get_image())
+		imlib_free_image();
+}
+
+void img_load(img_t *img, const char *filename) {
 	if (!img || !filename)
 		return;
 
@@ -53,7 +60,7 @@ void img_render(img_t *img, win_t *win) {
 	unsigned int sx, sy, sw, sh;
 	unsigned int dx, dy, dw, dh;
 
-	if (!img || !win)
+	if (!img || !win || !imlib_context_get_image())
 		return;
 
 	/* set zoom level to fit image into window */

image.h

@@ -36,13 +36,13 @@ typedef struct img_s {
 	int h;
 	int x;
 	int y;
-
 	Imlib_Image *im;
 } img_t;
 
 void imlib_init(win_t*);
+void imlib_destroy();
 
-void img_load(img_t*, char*);
+void img_load(img_t*, const char*);
 void img_render(img_t*, win_t*);
 
 #endif /* IMAGE_H */

main.c

@@ -18,20 +18,63 @@
 
 #include <stdlib.h>
 
-#include "sxiv.h"
-#include "app.h"
+#include <X11/Xlib.h>
+#include <X11/keysym.h>
 
-app_t app;
+#include "sxiv.h"
+#include "image.h"
+#include "options.h"
+#include "window.h"
+
+void on_keypress(XEvent*);
+void on_configurenotify(XEvent*);
+void on_expose(XEvent*);
+
+static void (*handler[LASTEvent])(XEvent*) = {
+	[Expose] = on_expose,
+	[ConfigureNotify] = on_configurenotify,
+	[KeyPress] = on_keypress
+};
+
+img_t img;
+win_t win;
+unsigned int fileidx;
+
+void run() {
+	XEvent ev;
+
+	while (!XNextEvent(win.env.dpy, &ev)) {
+		if (handler[ev.type])
+			handler[ev.type](&ev);
+	}
+}
 
 int main(int argc, char **argv) {
+	if (parse_options(argc, argv) < 0)
+		return 1;
 
-	// TODO: parse cmd line arguments properly
-	app.filenames = argv + 1;
-	app.filecnt = argc - 1;
+	if (!options->filecnt) {
+		print_usage();
+		exit(1);
+	}
 
-	app_init(&app);
-	app_run(&app);
-	app_quit(&app);
+	fileidx = 0;
+
+	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, options->filenames[fileidx]);
+	img_render(&img, &win);
+
+	run();
+
+	cleanup();
 
 	return 0;
 }
@@ -39,6 +82,36 @@ int main(int argc, char **argv) {
 void cleanup() {
 	static int in = 0;
 
-	if (!in++)
-		app_quit(&app);
+	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);
+	}
+}
+
+void on_configurenotify(XEvent *ev) {
+	if (!ev)
+		return;
+	
+	win_configure(&win, &ev->xconfigure);
+}
+
+void on_expose(XEvent *ev) {
 }

options.c

@@ -1,4 +1,4 @@
-/* sxiv: app.c
+/* sxiv: options.c
  * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -16,42 +16,45 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#include <X11/Xlib.h>
+#define _XOPEN_SOURCE
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
 
 #include "sxiv.h"
-#include "app.h"
-#include "events.h"
+#include "options.h"
 
-void app_init(app_t *app) {
-	if (!app)
-		return;
+options_t _options;
+const options_t *options = (const options_t*) &_options;
 
-	app->fileidx = 0;
-
-	app->img.zoom = 1.0;
-	app->img.scalemode = SCALE_MODE;
-
-	app->win.w = WIN_WIDTH;
-	app->win.h = WIN_HEIGHT;
-
-	win_open(&app->win);
-	
-	imlib_init(&app->win);
+void print_usage() {
+	printf("usage: sxiv [-hv] FILES...\n");
 }
 
-void app_run(app_t *app) {
-	app_load_image(app);
-	event_loop(app);
+void print_version() {
+	printf("sxiv - simple x image viewer\n");
+	printf("Version %s, written by Bert Muennich\n", VERSION);
 }
 
-void app_quit(app_t *app) {
-}
-
-void app_load_image(app_t *app) {
-	if (!app || app->fileidx >= app->filecnt || !app->filenames)
-		return;
-
-	img_load(&app->img, app->filenames[app->fileidx]);
-
-	img_render(&app->img, &app->win);
+int parse_options(int argc, char **argv) {
+	int opt;
+
+	_options.filenames = (const char**) argv + 1;
+	_options.filecnt = argc - 1;
+
+	while ((opt = getopt(argc, argv, "hv")) != -1) {
+		switch (opt) {
+			case '?':
+				return -1;
+			case 'h':
+				print_usage();
+				exit(0);
+			case 'v':
+				print_version();
+				exit(0);
+		}
+	}
+
+	return 0;
 }

options.h

@@ -1,4 +1,4 @@
-/* sxiv: events.h
+/* sxiv: options.h
  * Copyright (c) 2011 Bert Muennich <muennich at informatik.hu-berlin.de>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -16,11 +16,19 @@
  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  */
 
-#ifndef EVENTS_H
-#define EVENTS_H
+#ifndef OPTIONS_H
+#define OPTIONS_H
 
-#include "app.h"
+typedef struct options_s {
+	const char **filenames;
+	unsigned int filecnt;
+} options_t;
 
-void event_loop(app_t*);
+extern const options_t *options;
 
-#endif /* EVENTS_H */
+void print_usage();
+void print_version();
+
+int parse_options(int, char**);
+
+#endif /* OPTIONS_H */

sxiv.h

@@ -21,7 +21,7 @@
 
 #include "config.h"
 
-#define VERSION "git-20110117"
+#define VERSION "git-20110119"
 
 #define MIN(a,b) ((a) < (b) ? (a) : (b))
 #define MAX(a,b) ((a) > (b) ? (a) : (b))