Toggle image transparency with A-key

Makefile

@@ -1,6 +1,6 @@
 all: sxiv
 
-VERSION=git-20110309
+VERSION=git-20110310
 
 CC?=gcc
 PREFIX?=/usr/local

image.c

@@ -43,6 +43,7 @@ void img_init(img_t *img, win_t *win) {
 		img->zoom = MAX(img->zoom, zoom_min);
 		img->zoom = MIN(img->zoom, zoom_max);
 		img->aa = options->aa;
+		img->alpha = 1;
 	}
 
 	if (win) {
@@ -211,7 +212,7 @@ void img_render(img_t *img, win_t *win) {
 	else
 		imlib_context_set_image(im_broken);
 
-	if (imlib_image_has_alpha())
+	if (imlib_image_has_alpha() && !img->alpha)
 		win_draw_rect(win, win->pm, dx, dy, dw, dh, True, 0, win->white);
 	
 	imlib_context_set_drawable(win->pm);

image.h

@@ -45,6 +45,7 @@ typedef struct {
 	unsigned char re;
 	unsigned char checkpan;
 	unsigned char aa;
+	unsigned char alpha;
 
 	int x;
 	int y;

main.c

@@ -496,6 +496,10 @@ void on_keypress(XKeyEvent *kev) {
 				img_toggle_antialias(&img);
 				changed = 1;
 				break;
+			case XK_A:
+				img.alpha ^= 1;
+				changed = 1;
+				break;
 			case XK_r:
 				changed = load_image(fileidx);
 				break;