Pan by pixel count, if number prefix given

commands.c

@@ -184,7 +184,7 @@ bool it_move(arg_t a) {
 	direction_t dir = (direction_t) a;
 
 	if (mode == MODE_IMAGE)
-		return img_pan(&img, dir, false);
+		return img_pan(&img, dir, prefix);
 	else
 		return tns_move_selection(&tns, dir);
 }
@@ -193,7 +193,7 @@ bool i_pan_screen(arg_t a) {
 	direction_t dir = (direction_t) a;
 
 	if (mode == MODE_IMAGE)
-		return img_pan(&img, dir, true);
+		return img_pan(&img, dir, -1);
 	else
 		return false;
 }

image.c

@@ -576,19 +576,32 @@ bool img_move(img_t *img, int dx, int dy) {
 	}
 }
 
-bool img_pan(img_t *img, direction_t dir, bool screen) {
+bool img_pan(img_t *img, direction_t dir, int d) {
+	/* d < 0: screen-wise
+	 * d = 0: 1/5 of screen
+	 * d > 0: num of pixels
+	 */
+	int x, y;
+
 	if (img == NULL || img->im == NULL || img->win == NULL)
 		return false;
 
+	if (d > 0) {
+		x = y = MAX(1, d * img->zoom);
+	} else {
+		x = img->win->w / (d < 0 ? 1 : 5);
+		y = img->win->h / (d < 0 ? 1 : 5);
+	}
+
 	switch (dir) {
 		case DIR_LEFT:
-			return img_move(img, img->win->w / (screen ? 1 : 5), 0);
+			return img_move(img, x, 0);
 		case DIR_RIGHT:
-			return img_move(img, img->win->w / (screen ? 1 : 5) * -1, 0);
+			return img_move(img, -x, 0);
 		case DIR_UP:
-			return img_move(img, 0, img->win->h / (screen ? 1 : 5));
+			return img_move(img, 0, y);
 		case DIR_DOWN:
-			return img_move(img, 0, img->win->h / (screen ? 1 : 5) * -1);
+			return img_move(img, 0, -y);
 	}
 	return false;
 }

image.h

@@ -76,7 +76,7 @@ bool img_zoom_in(img_t*);
 bool img_zoom_out(img_t*);
 
 bool img_move(img_t*, int, int);
-bool img_pan(img_t*, direction_t, bool);
+bool img_pan(img_t*, direction_t, int);
 bool img_pan_edge(img_t*, direction_t);
 
 void img_rotate_left(img_t*);

main.c

@@ -337,9 +337,11 @@ void on_keypress(XKeyEvent *kev) {
 
 	XLookupString(kev, &key, 1, &ksym, NULL);
 
-	if (key >= '0' && key <= '9' && (kev->state & ControlMask) == 0) {
+	if ((ksym == XK_Escape || (key >= '0' && key <= '9')) &&
+	    (kev->state & ControlMask) == 0)
+	{
 		/* number prefix for commands */
-		prefix = prefix * 10 + (int) (key - '0');
+		prefix = ksym == XK_Escape ? 0 : prefix * 10 + (int) (key - '0');
 		return;
 	}