Render thumbnails

image.c

@@ -110,6 +110,32 @@ int img_load(img_t *img, const char *filename) {
 	return 1;
 }
 
+int img_load_thumb(thumb_t *tn, const char *filename) {
+	int w, h;
+	float z, zw, zh;
+
+	if (!tn)
+		return 0;
+	
+	if (!_imlib_load_image(filename))
+		return 0;
+
+	w = imlib_image_get_width();
+	h = imlib_image_get_height();
+	zw = (float) THUMB_SIZE / (float) w;
+	zh = (float) THUMB_SIZE / (float) h;
+	z = MIN(zw, zh);
+	tn->w = z * w;
+	tn->h = z * h;
+
+	imlib_context_set_drawable(tn->pm);
+	imlib_render_image_part_on_drawable_at_size(0, 0, w, h,
+	                                            0, 0, tn->w, tn->h);
+	imlib_free_image();
+
+	return 1;
+}
+
 void img_check_pan(img_t *img, win_t *win) {
 	if (!img || !win)
 		return;
@@ -149,27 +175,6 @@ 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

@@ -52,6 +52,8 @@ typedef struct img_s {
 typedef struct thumb_s {
 	int x;
 	int y;
+	int w;
+	int h;
 	Pixmap pm;
 } thumb_t;
 

main.c

@@ -27,6 +27,7 @@
 #include <X11/Xutil.h>
 #include <X11/keysym.h>
 
+#include "config.h"
 #include "image.h"
 #include "options.h"
 #include "util.h"
@@ -38,6 +39,7 @@ typedef enum appmode_e {
 } appmode_t;
 
 void update_title();
+void render_thumbs();
 int check_append(const char*);
 void read_dir_rec(const char*);
 void run();
@@ -53,6 +55,7 @@ int filecnt, fileidx;
 size_t filesize;
 
 thumb_t *thumbs;
+int tvis, tcols, trows;
 
 #define TITLE_LEN 256
 char win_title[TITLE_LEN];
@@ -137,6 +140,7 @@ int main(int argc, char **argv) {
 
 	if (options->thumbnails == 2) {
 		mode = MODE_THUMBS;
+		render_thumbs();
 	} else {
 		mode = MODE_NORMAL;
 		load_image();
@@ -175,6 +179,35 @@ void update_title() {
 	win_set_title(&win, win_title);
 }
 
+void render_thumbs() {
+	int i, cnt, x, y;
+
+	tcols = win.w / (THUMB_SIZE + 10);
+	trows = win.h / (THUMB_SIZE + 10);
+
+	x = win.w - tcols * (THUMB_SIZE + 10) + 5;
+	y = win.h - trows * (THUMB_SIZE + 10) + 5;
+	cnt = MIN(tcols * trows, filecnt);
+
+	win_clear(&win);
+
+	i = 0;
+	while (i < cnt) {
+		thumbs[i].x = x + (THUMB_SIZE - thumbs[i].w) / 2;
+		thumbs[i].y = y + (THUMB_SIZE - thumbs[i].h) / 2;
+		win_draw_pixmap(&win, thumbs[i].pm, thumbs[i].x, thumbs[i].y, thumbs[i].w,
+		                thumbs[i].h);
+		if (++i % tcols == 0) {
+			x = win.w - tcols * (THUMB_SIZE + 10) + 5;
+			y += THUMB_SIZE + 10;
+		} else {
+			x += THUMB_SIZE + 10;
+		}
+	}
+
+	win_draw(&win);
+}
+
 int check_append(const char *filename) {
 	if (!filename)
 		return 0;

options.c

@@ -25,12 +25,13 @@
 
 #include "config.h"
 #include "options.h"
+#include "util.h"
 
 options_t _options;
 const options_t *options = (const options_t*) &_options;
 
 void print_usage() {
-	printf("usage: sxiv [-dFfhpqrstvZ] [-g GEOMETRY] [-z ZOOM] FILES...\n");
+	printf("usage: sxiv [-dFfhpqrsTtvZ] [-g GEOMETRY] [-z ZOOM] FILES...\n");
 }
 
 void print_version() {
@@ -54,7 +55,7 @@ void parse_options(int argc, char **argv) {
 	_options.quiet = 0;
 	_options.recursive = 0;
 
-	while ((opt = getopt(argc, argv, "dFfg:hpqrstvZz:")) != -1) {
+	while ((opt = getopt(argc, argv, "dFfg:hpqrsTtvZz:")) != -1) {
 		switch (opt) {
 			case '?':
 				print_usage();
@@ -86,8 +87,11 @@ void parse_options(int argc, char **argv) {
 			case 's':
 				_options.scalemode = SCALE_FIT;
 				break;
+			case 'T':
+				_options.thumbnails = 2;
+				break;
 			case 't':
-				_options.thumbnails = 1;
+				_options.thumbnails = MAX(_options.thumbnails, 1);
 				break;
 			case 'v':
 				print_version();

window.c

@@ -219,6 +219,13 @@ Pixmap win_create_pixmap(win_t *win) {
 	                     win->env.depth);
 }
 
+void win_draw_pixmap(win_t *win, Pixmap pm, int x, int y, int w, int h) {
+	if (!win)
+		return;
+
+	XCopyArea(win->env.dpy, pm, win->pm, bgc, 0, 0, w, h, x, y);
+}
+
 void win_clear(win_t *win) {
 	win_env_t *e;
 	XGCValues gcval;

window.h

@@ -64,6 +64,7 @@ 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_draw_pixmap(win_t*, Pixmap, int, int, int, int);
 
 void win_clear(win_t*);
 void win_draw(win_t*);