Use int instead of wl_fixed_t for mouse coordinates

include/client/window.h

@@ -28,10 +28,10 @@ struct cursor {
 };
 
 struct pointer_input {
-	wl_fixed_t last_x;
-	wl_fixed_t last_y;
+	int last_x;
+	int last_y;
 
-	void (*notify)(struct window *window, wl_fixed_t x, wl_fixed_t y, uint32_t button);
+	void (*notify)(struct window *window, int x, int y, uint32_t button);
 };
 
 struct window {

wayland/window.c

@@ -32,8 +32,8 @@ static void pointer_handle_motion(void *data, struct wl_pointer *pointer,
 		      uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w) {
 	struct window *window = data;
 
-	window->pointer_input.last_x = sx_w;
-	window->pointer_input.last_y = sy_w;
+	window->pointer_input.last_x = wl_fixed_to_int(sx_w);
+	window->pointer_input.last_y = wl_fixed_to_int(sy_w);
 }
 
 static void pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,