Listen to server-decoration mode changes

include/sway/decoration.h

@@ -0,0 +1,13 @@
+#ifndef _SWAY_DECORATION_H
+#define _SWAY_DECORATION_H
+
+#include <wlr/types/wlr_server_decoration.h>
+
+struct sway_server_decoration {
+	struct wlr_server_decoration *wlr_server_decoration;
+
+	struct wl_listener destroy;
+	struct wl_listener mode;
+};
+
+#endif

include/sway/server.h

@@ -4,12 +4,13 @@
 #include <wayland-server.h>
 #include <wlr/backend.h>
 #include <wlr/backend/session.h>
+#include <wlr/render/wlr_renderer.h>
 #include <wlr/types/wlr_compositor.h>
 #include <wlr/types/wlr_data_device.h>
 #include <wlr/types/wlr_layer_shell.h>
+#include <wlr/types/wlr_server_decoration.h>
 #include <wlr/types/wlr_xdg_shell_v6.h>
 #include <wlr/types/wlr_xdg_shell.h>
-#include <wlr/render/wlr_renderer.h>
 // TODO WLR: make Xwayland optional
 #include "list.h"
 #include "config.h"
@@ -42,11 +43,16 @@ struct sway_server {
 
 	struct wlr_xdg_shell *xdg_shell;
 	struct wl_listener xdg_shell_surface;
+
 #ifdef HAVE_XWAYLAND
 	struct sway_xwayland xwayland;
 	struct wl_listener xwayland_surface;
 	struct wl_listener xwayland_ready;
 #endif
+
+	struct wlr_server_decoration_manager *server_decoration_manager;
+	struct wl_listener server_decoration;
+
 	bool debug_txn_timings;
 
 	list_t *transactions;
@@ -71,4 +77,6 @@ void handle_xdg_shell_surface(struct wl_listener *listener, void *data);
 #ifdef HAVE_XWAYLAND
 void handle_xwayland_surface(struct wl_listener *listener, void *data);
 #endif
+void handle_server_decoration(struct wl_listener *listener, void *data);
+
 #endif

sway/decoration.c

@@ -0,0 +1,41 @@
+#include <stdlib.h>
+#include "sway/decoration.h"
+#include "sway/server.h"
+#include "sway/tree/view.h"
+#include "log.h"
+
+static void server_decoration_handle_destroy(struct wl_listener *listener,
+		void *data) {
+	struct sway_server_decoration *deco =
+		wl_container_of(listener, deco, destroy);
+	wl_list_remove(&deco->destroy.link);
+	free(deco);
+}
+
+static void server_decoration_handle_mode(struct wl_listener *listener,
+		void *data) {
+	struct sway_server_decoration *deco =
+		wl_container_of(listener, deco, mode);
+	struct sway_view *view =
+		view_from_wlr_surface(deco->wlr_server_decoration->surface);
+
+	// TODO
+	wlr_log(WLR_ERROR, "%p %d", view, deco->wlr_server_decoration->mode);
+}
+
+void handle_server_decoration(struct wl_listener *listener, void *data) {
+	struct wlr_server_decoration *wlr_deco = data;
+
+	struct sway_server_decoration *deco = calloc(1, sizeof(*deco));
+	if (deco == NULL) {
+		return;
+	}
+
+	deco->wlr_server_decoration = wlr_deco;
+
+	wl_signal_add(&wlr_deco->events.destroy, &deco->destroy);
+	deco->destroy.notify = server_decoration_handle_destroy;
+
+	wl_signal_add(&wlr_deco->events.mode, &deco->mode);
+	deco->mode.notify = server_decoration_handle_mode;
+}

sway/meson.build

@@ -1,13 +1,14 @@
 sway_sources = files(
-	'main.c',
-	'server.c',
 	'commands.c',
 	'config.c',
 	'criteria.c',
 	'debug-tree.c',
+	'decoration.c',
 	'ipc-json.c',
 	'ipc-server.c',
+	'main.c',
 	'security.c',
+	'server.c',
 	'swaynag.c',
 
 	'desktop/desktop.c',

sway/server.c

@@ -109,11 +109,14 @@ bool server_init(struct sway_server *server) {
 	}
 #endif
 
-	// TODO: Integration with sway borders
-	struct wlr_server_decoration_manager *deco_manager =
+	server->server_decoration_manager =
 		wlr_server_decoration_manager_create(server->wl_display);
 	wlr_server_decoration_manager_set_default_mode(
-		deco_manager, WLR_SERVER_DECORATION_MANAGER_MODE_SERVER);
+		server->server_decoration_manager,
+		WLR_SERVER_DECORATION_MANAGER_MODE_SERVER);
+	wl_signal_add(&server->server_decoration_manager->events.new_decoration,
+		&server->server_decoration);
+	server->server_decoration.notify = handle_server_decoration;
 
 	wlr_linux_dmabuf_v1_create(server->wl_display, renderer);
 	wlr_export_dmabuf_manager_v1_create(server->wl_display);