rootston: fix damage tracking for SSD

include/rootston/desktop.h

@@ -69,6 +69,7 @@ void view_activate(struct roots_view *view, bool activate);
 void view_apply_damage(struct roots_view *view);
 void view_damage_whole(struct roots_view *view);
 void view_update_position(struct roots_view *view, double x, double y);
+void view_update_size(struct roots_view *view, uint32_t width, uint32_t height);
 
 void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data);
 void handle_wl_shell_surface(struct wl_listener *listener, void *data);

include/rootston/view.h

@@ -62,6 +62,7 @@ struct roots_view {
 	struct wl_list link; // roots_desktop::views
 
 	double x, y;
+	uint32_t width, height;
 	float rotation;
 
 	bool decorated;
@@ -108,11 +109,7 @@ struct roots_view {
 		struct wl_signal destroy;
 	} events;
 
-	// TODO: This would probably be better as a field that's updated on a
-	// configure event from the xdg_shell
-	// If not then this should follow the typical type/impl pattern we use
-	// elsewhere
-	void (*get_size)(const struct roots_view *view, struct wlr_box *box);
+	// TODO: this should follow the typical type/impl pattern we use elsewhere
 	void (*activate)(struct roots_view *view, bool active);
 	void (*move)(struct roots_view *view, double x, double y);
 	void (*resize)(struct roots_view *view, uint32_t width, uint32_t height);

rootston/desktop.c

@@ -24,18 +24,8 @@
 void view_get_box(const struct roots_view *view, struct wlr_box *box) {
 	box->x = view->x;
 	box->y = view->y;
-	if (view->get_size) {
-		view->get_size(view, box);
-	} else {
-		if (view->wlr_surface == NULL) {
-			// View is unmapped
-			box->width = box->height = 0;
-			return;
-		}
-
-		box->width = view->wlr_surface->current->width;
-		box->height = view->wlr_surface->current->height;
-	}
+	box->width = view->width;
+	box->height = view->height;
 }
 
 void view_get_deco_box(const struct roots_view *view, struct wlr_box *box) {
@@ -469,6 +459,17 @@ void view_update_position(struct roots_view *view, double x, double y) {
 	view_damage_whole(view);
 }
 
+void view_update_size(struct roots_view *view, uint32_t width, uint32_t height) {
+	if (view->width == width && view->height == height) {
+		return;
+	}
+
+	view_damage_whole(view);
+	view->width = width;
+	view->height = height;
+	view_damage_whole(view);
+}
+
 static bool view_at(struct roots_view *view, double lx, double ly,
 		struct wlr_surface **surface, double *sx, double *sy) {
 	if (view->type == ROOTS_WL_SHELL_VIEW &&

rootston/wl_shell.c

@@ -147,6 +147,8 @@ static void handle_surface_commit(struct wl_listener *listener, void *data) {
 
 	int width = wlr_surface->current->width;
 	int height = wlr_surface->current->height;
+	view_update_size(view, width, height);
+
 	double x = view->x;
 	double y = view->y;
 	if (view->pending_move_resize.update_x) {
@@ -231,6 +233,8 @@ void handle_wl_shell_surface(struct wl_listener *listener, void *data) {
 		return;
 	}
 	view->type = ROOTS_WL_SHELL_VIEW;
+	view->width = surface->surface->current->width;
+	view->height = surface->surface->current->height;
 
 	view->wl_shell_surface = surface;
 	view->roots_wl_shell_surface = roots_surface;

rootston/xdg_shell_v6.c

@@ -245,12 +245,13 @@ static void handle_surface_commit(struct wl_listener *listener, void *data) {
 
 	view_apply_damage(view);
 
+	struct wlr_box size;
+	get_size(view, &size);
+	view_update_size(view, size.width, size.height);
+
 	uint32_t pending_serial =
 		roots_surface->pending_move_resize_configure_serial;
 	if (pending_serial > 0 && pending_serial >= surface->configure_serial) {
-		struct wlr_box size;
-		get_size(view, &size);
-
 		double x = view->x;
 		double y = view->y;
 		if (view->pending_move_resize.update_x) {
@@ -338,10 +339,10 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 		return;
 	}
 	view->type = ROOTS_XDG_SHELL_V6_VIEW;
+
 	view->xdg_surface_v6 = surface;
 	view->roots_xdg_surface_v6 = roots_surface;
 	view->wlr_surface = surface->surface;
-	view->get_size = get_size;
 	view->activate = activate;
 	view->resize = resize;
 	view->move_resize = move_resize;
@@ -349,6 +350,12 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 	view->set_fullscreen = set_fullscreen;
 	view->close = close;
 	roots_surface->view = view;
+
+	struct wlr_box box;
+	get_size(view, &box);
+	view->width = box.width;
+	view->height = box.height;
+
 	view_init(view, desktop);
 	wl_list_insert(&desktop->views, &view->link);
 

rootston/xwayland.c

@@ -209,6 +209,8 @@ static void handle_surface_commit(struct wl_listener *listener, void *data) {
 
 	int width = wlr_surface->current->width;
 	int height = wlr_surface->current->height;
+	view_update_size(view, width, height);
+
 	double x = view->x;
 	double y = view->y;
 	if (view->pending_move_resize.update_x) {
@@ -234,6 +236,8 @@ static void handle_map_notify(struct wl_listener *listener, void *data) {
 	view->wlr_surface = xsurface->surface;
 	view->x = xsurface->x;
 	view->y = xsurface->y;
+	view->width = xsurface->surface->current->width;
+	view->height = xsurface->surface->current->height;
 	wl_list_insert(&desktop->views, &view->link);
 
 	struct wlr_subsurface *subsurface;
@@ -264,6 +268,7 @@ static void handle_unmap_notify(struct wl_listener *listener, void *data) {
 	}
 
 	view->wlr_surface = NULL;
+	view->width = view->height = 0;
 	wl_list_remove(&view->link);
 }
 
@@ -314,6 +319,8 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
 	view->type = ROOTS_XWAYLAND_VIEW;
 	view->x = (double)surface->x;
 	view->y = (double)surface->y;
+	view->width = surface->surface->current->width;
+	view->height = surface->surface->current->height;
 
 	view->xwayland_surface = surface;
 	view->roots_xwayland_surface = roots_surface;