use KDE server-decoration protocol for native Wayland frameless

Replace xdg-decoration (needs xdg_toplevel, GTK3 doesn't expose it) with org_kde_kwin_server_decoration (works with wl_surface which GDK provides). On KDE Wayland: binds the manager from the registry, creates a per-surface decoration object, requests mode=None (0). Falls back gracefully on GNOME (protocol not present, GTK's set_decorated(FALSE) already works). X11 fallback via gdk_window_set_decorations(0) unchanged. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-23 09:30:51 +02:00
parent a6b11a4cd8
commit db550d6829
5 changed files with 365 additions and 21 deletions
@@ -0,0 +1,60 @@
+/* Generated by wayland-scanner 1.24.0 */
+
+/*
+ * SPDX-FileCopyrightText: 2015 Martin Gräßlin
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "wayland-util.h"
+
+#ifndef __has_attribute
+# define __has_attribute(x) 0  /* Compatibility with non-clang compilers. */
+#endif
+
+#if (__has_attribute(visibility) || defined(__GNUC__) && __GNUC__ >= 4)
+#define WL_PRIVATE __attribute__ ((visibility("hidden")))
+#else
+#define WL_PRIVATE
+#endif
+
+extern const struct wl_interface org_kde_kwin_server_decoration_interface;
+extern const struct wl_interface wl_surface_interface;
+
+static const struct wl_interface *server_decoration_types[] = {
+	NULL,
+	&org_kde_kwin_server_decoration_interface,
+	&wl_surface_interface,
+};
+
+static const struct wl_message org_kde_kwin_server_decoration_manager_requests[] = {
+	{ "create", "no", server_decoration_types + 1 },
+};
+
+static const struct wl_message org_kde_kwin_server_decoration_manager_events[] = {
+	{ "default_mode", "u", server_decoration_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface org_kde_kwin_server_decoration_manager_interface = {
+	"org_kde_kwin_server_decoration_manager", 1,
+	1, org_kde_kwin_server_decoration_manager_requests,
+	1, org_kde_kwin_server_decoration_manager_events,
+};
+
+static const struct wl_message org_kde_kwin_server_decoration_requests[] = {
+	{ "release", "", server_decoration_types + 0 },
+	{ "request_mode", "u", server_decoration_types + 0 },
+};
+
+static const struct wl_message org_kde_kwin_server_decoration_events[] = {
+	{ "mode", "u", server_decoration_types + 0 },
+};
+
+WL_PRIVATE const struct wl_interface org_kde_kwin_server_decoration_interface = {
+	"org_kde_kwin_server_decoration", 1,
+	2, org_kde_kwin_server_decoration_requests,
+	1, org_kde_kwin_server_decoration_events,
+};
+