xwm: Implement resizing by frame borders

src/compositor.h

@@ -73,6 +73,9 @@ struct weston_shell_interface {
 			      struct shell_surface *pshsurf,
 			      int x, int y, uint32_t flags);
 	int (*move)(struct shell_surface *shsurf, struct weston_seat *ws);
+	int (*resize)(struct shell_surface *shsurf,
+		      struct weston_seat *ws, uint32_t edges);
+
 };
 
 struct weston_border {

src/shell.c

@@ -626,8 +626,8 @@ static const struct wl_pointer_grab_interface resize_grab_interface = {
 };
 
 static int
-weston_surface_resize(struct shell_surface *shsurf,
-		      struct weston_seat *ws, uint32_t edges)
+surface_resize(struct shell_surface *shsurf,
+	       struct weston_seat *ws, uint32_t edges)
 {
 	struct weston_resize_grab *resize;
 
@@ -673,7 +673,7 @@ shell_surface_resize(struct wl_client *client, struct wl_resource *resource,
 	    ws->seat.pointer->focus != &shsurf->surface->surface)
 		return;
 
-	if (weston_surface_resize(shsurf, ws, edges) < 0)
+	if (surface_resize(shsurf, ws, edges) < 0)
 		wl_resource_post_no_memory(resource);
 }
 
@@ -1610,7 +1610,7 @@ resize_binding(struct wl_seat *seat, uint32_t time,
 	else
 		edges |= WL_SHELL_SURFACE_RESIZE_BOTTOM;
 
-	weston_surface_resize(shsurf, (struct weston_seat *) seat, edges);
+	surface_resize(shsurf, (struct weston_seat *) seat, edges);
 }
 
 static void
@@ -2658,6 +2658,7 @@ shell_init(struct weston_compositor *ec)
 	ec->shell_interface.set_toplevel = set_toplevel;
 	ec->shell_interface.set_transient = set_transient;
 	ec->shell_interface.move = surface_move;
+	ec->shell_interface.resize = surface_resize;
 
 	wl_list_init(&shell->backgrounds);
 	wl_list_init(&shell->panels);

src/xwayland/window-manager.c

@@ -781,25 +781,39 @@ weston_wm_handle_button(struct weston_wm *wm, xcb_generic_event_t *event)
 	struct weston_wm_window *window;
 	enum theme_location location;
 	struct theme *t = wm->theme;
+	int width, height;
 
 	fprintf(stderr, "XCB_BUTTON_%s (detail %d)\n",
 		button->response_type == XCB_BUTTON_PRESS ?
 		"PRESS" : "RELEASE", button->detail);
 
 	window = hash_table_lookup(wm->window_hash, button->event);
+	weston_wm_window_get_frame_size(window, &width, &height);
+
 	if (button->response_type == XCB_BUTTON_PRESS &&
 	    button->detail == 1) {
 		location = theme_get_location(t,
 					      button->event_x,
 					      button->event_y,
-					      window->width,
-					      window->height);
+					      width, height);
 
 		switch (location) {
 		case THEME_LOCATION_TITLEBAR:
 			shell_interface->move(window->shsurf,
 					      wm->server->compositor->seat);
 			break;
+		case THEME_LOCATION_RESIZING_TOP:
+		case THEME_LOCATION_RESIZING_BOTTOM:
+		case THEME_LOCATION_RESIZING_LEFT:
+		case THEME_LOCATION_RESIZING_RIGHT:
+		case THEME_LOCATION_RESIZING_TOP_LEFT:
+		case THEME_LOCATION_RESIZING_TOP_RIGHT:
+		case THEME_LOCATION_RESIZING_BOTTOM_LEFT:
+		case THEME_LOCATION_RESIZING_BOTTOM_RIGHT:
+			shell_interface->resize(window->shsurf,
+						wm->server->compositor->seat,
+						location);
+			break;
 		default:
 			break;
 		}