First things for thumbnail mode

config.h

@@ -19,3 +19,5 @@ static const float zoom_levels[] = {
 	 12.5,  25.0,  50.0,  75.0,
 	100.0, 150.0, 200.0, 400.0, 800.0
 };
+
+#define THUMB_SIZE  50

image.c

@@ -149,6 +149,27 @@ int img_fit(img_t *img, win_t *win) {
 	return oz != img->zoom;
 }
 
+int img_load_thumb(thumb_t *tn, const char *filename) {
+	int w;
+	int h;
+
+	if (!tn)
+		return 0;
+	
+	if (!_imlib_load_image(filename))
+		return 0;
+
+	w = imlib_image_get_width();
+	h = imlib_image_get_height();
+
+	imlib_context_set_drawable(tn->pm);
+	imlib_render_image_part_on_drawable_at_size(0, 0, w, h,
+	                                            0, 0, THUMB_SIZE, THUMB_SIZE);
+	imlib_free_image();
+
+	return 1;
+}
+
 void img_render(img_t *img, win_t *win) {
 	int sx, sy, sw, sh;
 	int dx, dy, dw, dh;

image.h

@@ -49,11 +49,18 @@ typedef struct img_s {
 	int h;
 } img_t;
 
+typedef struct thumb_s {
+	int x;
+	int y;
+	Pixmap pm;
+} thumb_t;
+
 void img_init(img_t*, win_t*);
 void img_free(img_t*);
 
 int img_check(const char*);
 int img_load(img_t*, const char*);
+int img_load_thumb(thumb_t*, const char*);
 
 void img_render(img_t*, win_t*);
 

main.c

@@ -46,6 +46,8 @@ const char **filenames;
 int filecnt, fileidx;
 size_t filesize;
 
+thumb_t *thumbs;
+
 #define TITLE_LEN 256
 char win_title[TITLE_LEN];
 
@@ -119,6 +121,12 @@ int main(int argc, char **argv) {
 	win_open(&win);
 	img_init(&img, &win);
 
+	if (options->thumbnails) {
+		thumbs = (thumb_t*) s_malloc(filecnt * sizeof(thumb_t));
+		for (i = 0; i < filecnt; ++i)
+			img_load_thumb(&thumbs[i], filenames[i]);
+	}
+
 	load_image();
 	img_render(&img, &win);
 	update_title();

options.c

@@ -30,7 +30,7 @@ options_t _options;
 const options_t *options = (const options_t*) &_options;
 
 void print_usage() {
-	printf("usage: sxiv [-dFfhpqrsvZ] [-g GEOMETRY] [-z ZOOM] FILES...\n");
+	printf("usage: sxiv [-dFfhpqrstvZ] [-g GEOMETRY] [-z ZOOM] FILES...\n");
 }
 
 void print_version() {
@@ -45,6 +45,7 @@ void parse_options(int argc, char **argv) {
 	_options.scalemode = SCALE_MODE;
 	_options.zoom = 1.0;
 	_options.aa = 1;
+	_options.thumbnails = 0;
 
 	_options.fixed = 0;
 	_options.fullscreen = 0;
@@ -53,7 +54,7 @@ void parse_options(int argc, char **argv) {
 	_options.quiet = 0;
 	_options.recursive = 0;
 
-	while ((opt = getopt(argc, argv, "dFfg:hpqrsvZz:")) != -1) {
+	while ((opt = getopt(argc, argv, "dFfg:hpqrstvZz:")) != -1) {
 		switch (opt) {
 			case '?':
 				print_usage();
@@ -85,6 +86,9 @@ void parse_options(int argc, char **argv) {
 			case 's':
 				_options.scalemode = SCALE_FIT;
 				break;
+			case 't':
+				_options.thumbnails = 1;
+				break;
 			case 'v':
 				print_version();
 				exit(0);

options.h

@@ -29,6 +29,7 @@ typedef struct options_s {
 	scalemode_t scalemode;
 	float zoom;
 	unsigned char aa;
+	unsigned char thumbnails;
 
 	unsigned char fixed;
 	unsigned char fullscreen;

window.c

@@ -211,6 +211,14 @@ void win_toggle_fullscreen(win_t *win) {
 	           SubstructureNotifyMask, &ev);
 }
 
+Pixmap win_create_pixmap(win_t *win) {
+	if (!win)
+		return 0;
+
+	return XCreatePixmap(win->env.dpy, win->xwin, THUMB_SIZE, THUMB_SIZE,
+	                     win->env.depth);
+}
+
 void win_clear(win_t *win) {
 	win_env_t *e;
 	XGCValues gcval;

window.h

@@ -63,6 +63,8 @@ int win_moveresize(win_t*, int, int, unsigned int, unsigned int);
 
 void win_toggle_fullscreen(win_t*);
 
+Pixmap win_create_pixmap(win_t*);
+
 void win_clear(win_t*);
 void win_draw(win_t*);