xdg-popup: use current/pending state pattern

include/wlr/types/wlr_xdg_shell.h

@@ -70,6 +70,12 @@ struct wlr_xdg_positioner {
 	struct wlr_xdg_positioner_rules rules;
 };
 
+struct wlr_xdg_popup_state {
+	// Position of the popup relative to the upper left corner of
+	// the window geometry of the parent surface
+	struct wlr_box geometry;
+};
+
 struct wlr_xdg_popup_configure {
 	struct wlr_box geometry;
 	struct wlr_xdg_positioner_rules rules;
@@ -86,9 +92,7 @@ struct wlr_xdg_popup {
 
 	struct wlr_xdg_popup_configure scheduled;
 
-	// Position of the popup relative to the upper left corner of the window
-	// geometry of the parent surface
-	struct wlr_box geometry;
+	struct wlr_xdg_popup_state current, pending;
 
 	struct wl_list grab_link; // wlr_xdg_popup_grab.popups
 };

types/scene/xdg_shell.c

@@ -60,7 +60,7 @@ static void scene_xdg_surface_update_position(
 	if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_POPUP) {
 		struct wlr_xdg_popup *popup = xdg_surface->popup;
 		wlr_scene_node_set_position(&scene_xdg_surface->tree->node,
-			popup->geometry.x, popup->geometry.y);
+			popup->current.geometry.x, popup->current.geometry.y);
 	}
 }
 

types/wlr_layer_shell_v1.c

@@ -552,16 +552,15 @@ void wlr_layer_surface_v1_for_each_surface(struct wlr_layer_surface_v1 *surface,
 
 void wlr_layer_surface_v1_for_each_popup_surface(struct wlr_layer_surface_v1 *surface,
 		wlr_surface_iterator_func_t iterator, void *user_data){
-	struct wlr_xdg_popup *popup_state;
-	wl_list_for_each(popup_state, &surface->popups, link) {
-		struct wlr_xdg_surface *popup = popup_state->base;
-		if (!popup->configured || !popup->mapped) {
+	struct wlr_xdg_popup *popup;
+	wl_list_for_each(popup, &surface->popups, link) {
+		if (!popup->base->configured || !popup->base->mapped) {
 			continue;
 		}
 
 		double popup_sx, popup_sy;
-		popup_sx = popup->popup->geometry.x - popup->current.geometry.x;
-		popup_sy = popup->popup->geometry.y - popup->current.geometry.y;
+		popup_sx = popup->current.geometry.x - popup->base->current.geometry.x;
+		popup_sy = popup->current.geometry.y - popup->base->current.geometry.y;
 
 		struct layer_surface_iterator_data data = {
 			.user_iterator = iterator,
@@ -569,7 +568,8 @@ void wlr_layer_surface_v1_for_each_popup_surface(struct wlr_layer_surface_v1 *su
 			.x = popup_sx, .y = popup_sy,
 		};
 
-		wlr_xdg_surface_for_each_surface(popup, layer_surface_iterator, &data);
+		wlr_xdg_surface_for_each_surface(popup->base,
+			layer_surface_iterator, &data);
 	}
 }
 
@@ -587,20 +587,18 @@ struct wlr_surface *wlr_layer_surface_v1_surface_at(
 struct wlr_surface *wlr_layer_surface_v1_popup_surface_at(
 		struct wlr_layer_surface_v1 *surface, double sx, double sy,
 		double *sub_x, double *sub_y) {
-	struct wlr_xdg_popup *popup_state;
-	wl_list_for_each(popup_state, &surface->popups, link) {
-		struct wlr_xdg_surface *popup = popup_state->base;
-		if (!popup->mapped) {
+	struct wlr_xdg_popup *popup;
+	wl_list_for_each(popup, &surface->popups, link) {
+		if (!popup->base->mapped) {
 			continue;
 		}
 
-		double popup_sx = popup_state->geometry.x - popup->current.geometry.x;
-		double popup_sy = popup_state->geometry.y - popup->current.geometry.y;
+		double popup_sx, popup_sy;
+		popup_sx = popup->current.geometry.x - popup->base->current.geometry.x;
+		popup_sy = popup->current.geometry.y - popup->base->current.geometry.y;
 
-		struct wlr_surface *sub = wlr_xdg_surface_surface_at(popup,
-			sx - popup_sx,
-			sy - popup_sy,
-			sub_x, sub_y);
+		struct wlr_surface *sub = wlr_xdg_surface_surface_at(
+			popup->base, sx - popup_sx, sy - popup_sy, sub_x, sub_y);
 		if (sub != NULL) {
 			return sub;
 		}

types/xdg_shell/wlr_xdg_popup.c

@@ -7,7 +7,7 @@
 void handle_xdg_popup_ack_configure(
 		struct wlr_xdg_popup *popup,
 		struct wlr_xdg_popup_configure *configure) {
-	popup->geometry = configure->geometry;
+	popup->pending.geometry = configure->geometry;
 }
 
 struct wlr_xdg_popup_configure *send_xdg_popup_configure(
@@ -238,7 +238,10 @@ void handle_xdg_popup_committed(struct wlr_xdg_popup *popup) {
 	if (!popup->committed) {
 		wlr_xdg_surface_schedule_configure(popup->base);
 		popup->committed = true;
+		return;
 	}
+
+	popup->current = popup->pending;
 }
 
 static const struct xdg_popup_interface xdg_popup_implementation;
@@ -440,8 +443,8 @@ void wlr_xdg_popup_get_toplevel_coords(struct wlr_xdg_popup *popup,
 			wlr_xdg_surface_from_wlr_surface(parent);
 
 		if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_POPUP) {
-			popup_sx += xdg_surface->popup->geometry.x;
-			popup_sy += xdg_surface->popup->geometry.y;
+			popup_sx += xdg_surface->popup->current.geometry.x;
+			popup_sy += xdg_surface->popup->current.geometry.y;
 			parent = xdg_surface->popup->parent;
 		} else {
 			popup_sx += xdg_surface->current.geometry.x;

types/xdg_shell/wlr_xdg_surface.c

@@ -464,9 +464,9 @@ void wlr_xdg_popup_get_position(struct wlr_xdg_popup *popup,
 		wlr_xdg_surface_from_wlr_surface(popup->parent);
 	struct wlr_box parent_geo;
 	wlr_xdg_surface_get_geometry(parent, &parent_geo);
-	*popup_sx = parent_geo.x + popup->geometry.x -
+	*popup_sx = parent_geo.x + popup->current.geometry.x -
 		popup->base->current.geometry.x;
-	*popup_sy = parent_geo.y + popup->geometry.y -
+	*popup_sy = parent_geo.y + popup->current.geometry.y -
 		popup->base->current.geometry.y;
 }