xdg-popup: add proper configure flow

include/types/wlr_xdg_shell.h

@@ -26,6 +26,10 @@ void create_xdg_popup(struct wlr_xdg_surface *surface,
 void unmap_xdg_popup(struct wlr_xdg_popup *popup);
 void destroy_xdg_popup(struct wlr_xdg_popup *popup);
 void handle_xdg_popup_committed(struct wlr_xdg_popup *popup);
+struct wlr_xdg_popup_configure *send_xdg_popup_configure(
+	struct wlr_xdg_popup *popup);
+void handle_xdg_popup_ack_configure(struct wlr_xdg_popup *popup,
+	struct wlr_xdg_popup_configure *configure);
 
 void create_xdg_toplevel(struct wlr_xdg_surface *surface,
 	uint32_t id);

include/wlr/types/wlr_xdg_shell.h

@@ -70,6 +70,11 @@ struct wlr_xdg_positioner {
 	struct wlr_xdg_positioner_rules rules;
 };
 
+struct wlr_xdg_popup_configure {
+	struct wlr_box geometry;
+	struct wlr_xdg_positioner_rules rules;
+};
+
 struct wlr_xdg_popup {
 	struct wlr_xdg_surface *base;
 	struct wl_list link;
@@ -79,12 +84,12 @@ struct wlr_xdg_popup {
 	struct wlr_surface *parent;
 	struct wlr_seat *seat;
 
+	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_positioner_rules positioner_rules;
-
 	struct wl_list grab_link; // wlr_xdg_popup_grab.popups
 };
 
@@ -173,7 +178,10 @@ struct wlr_xdg_surface_configure {
 	struct wl_list link; // wlr_xdg_surface.configure_list
 	uint32_t serial;
 
-	struct wlr_xdg_toplevel_configure *toplevel_configure;
+	union {
+		struct wlr_xdg_toplevel_configure *toplevel_configure;
+		struct wlr_xdg_popup_configure *popup_configure;
+	};
 };
 
 struct wlr_xdg_surface_state {

types/xdg_shell/wlr_xdg_popup.c

@@ -4,6 +4,30 @@
 #include "types/wlr_xdg_shell.h"
 #include "util/signal.h"
 
+void handle_xdg_popup_ack_configure(
+		struct wlr_xdg_popup *popup,
+		struct wlr_xdg_popup_configure *configure) {
+	popup->geometry = configure->geometry;
+}
+
+struct wlr_xdg_popup_configure *send_xdg_popup_configure(
+		struct wlr_xdg_popup *popup) {
+	struct wlr_xdg_popup_configure *configure =
+		calloc(1, sizeof(*configure));
+	if (configure == NULL) {
+		wl_resource_post_no_memory(popup->resource);
+		return NULL;
+	}
+	*configure = popup->scheduled;
+
+	struct wlr_box *geometry = &configure->geometry;
+	xdg_popup_send_configure(popup->resource,
+		geometry->x, geometry->y,
+		geometry->width, geometry->height);
+
+	return configure;
+}
+
 static void xdg_popup_grab_end(struct wlr_xdg_popup_grab *popup_grab) {
 	struct wlr_xdg_popup *popup, *tmp;
 	wl_list_for_each_safe(popup, tmp, &popup_grab->popups, grab_link) {
@@ -348,10 +372,9 @@ void create_xdg_popup(struct wlr_xdg_surface *surface,
 
 	surface->role = WLR_XDG_SURFACE_ROLE_POPUP;
 
-	memcpy(&surface->popup->positioner_rules,
-		&positioner->rules, sizeof(positioner->rules));
 	wlr_xdg_positioner_rules_get_geometry(
-		&positioner->rules, &surface->popup->geometry);
+		&positioner->rules, &surface->popup->scheduled.geometry);
+	surface->popup->scheduled.rules = positioner->rules;
 
 	if (parent) {
 		surface->popup->parent = parent->surface;
@@ -443,6 +466,7 @@ void wlr_xdg_popup_unconstrain_from_box(struct wlr_xdg_popup *popup,
 		.width = toplevel_space_box->width,
 		.height = toplevel_space_box->height,
 	};
-	wlr_xdg_positioner_rules_unconstrain_box(&popup->positioner_rules,
-		&popup_constraint, &popup->geometry);
+	wlr_xdg_positioner_rules_unconstrain_box(&popup->scheduled.rules,
+		&popup_constraint, &popup->scheduled.geometry);
+	wlr_xdg_surface_schedule_configure(popup->base);
 }

types/xdg_shell/wlr_xdg_surface.c

@@ -107,9 +107,11 @@ static void xdg_surface_handle_ack_configure(struct wl_client *client,
 		break;
 	case WLR_XDG_SURFACE_ROLE_TOPLEVEL:
 		handle_xdg_toplevel_ack_configure(surface->toplevel,
-				configure->toplevel_configure);
+			configure->toplevel_configure);
 		break;
 	case WLR_XDG_SURFACE_ROLE_POPUP:
+		handle_xdg_popup_ack_configure(surface->popup,
+			configure->popup_configure);
 		break;
 	}
 
@@ -145,11 +147,8 @@ static void surface_send_configure(void *user_data) {
 			send_xdg_toplevel_configure(surface->toplevel);
 		break;
 	case WLR_XDG_SURFACE_ROLE_POPUP:
-		xdg_popup_send_configure(surface->popup->resource,
-			surface->popup->geometry.x,
-			surface->popup->geometry.y,
-			surface->popup->geometry.width,
-			surface->popup->geometry.height);
+		configure->popup_configure =
+			send_xdg_popup_configure(surface->popup);
 		break;
 	}