jpmschweitzer/clide
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use KDE server-decoration protocol for native Wayland frameless

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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>
This commit is contained in:
jpmschweitzer
2026-04-23 09:30:51 +02:00
co-authored by Claude Opus 4.6
parent a6b11a4cd8
commit db550d6829
5 changed files with 365 additions and 21 deletions
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linux/runner/my_application.cc
+29 -21
View File
@@ -8,7 +8,7 @@
#include <gdk/gdkwayland.h>
#endif
#ifdef HAS_WAYLAND_CLIENT
#include "protocols/xdg-decoration-unstable-v1-client-protocol.h"
#include "protocols/server-decoration-client-protocol.h"
#endif
#include "flutter/generated_plugin_registrant.h"
@@ -20,17 +20,18 @@ struct _MyApplication {
G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
// D-057: xdg-decoration state.
// D-057: KDE server-decoration protocol — request no decorations.
#ifdef HAS_WAYLAND_CLIENT
static struct zxdg_decoration_manager_v1* decoration_manager = nullptr;
static struct org_kde_kwin_server_decoration_manager* kde_deco_manager = nullptr;
static void registry_handler(void* data, struct wl_registry* registry,
uint32_t id, const char* interface,
uint32_t version) {
if (g_strcmp0(interface, zxdg_decoration_manager_v1_interface.name) == 0) {
decoration_manager = (struct zxdg_decoration_manager_v1*)
if (g_strcmp0(interface,
org_kde_kwin_server_decoration_manager_interface.name) == 0) {
kde_deco_manager = (struct org_kde_kwin_server_decoration_manager*)
wl_registry_bind(registry, id,
&zxdg_decoration_manager_v1_interface, 1);
&org_kde_kwin_server_decoration_manager_interface, 1);
}
}
@@ -40,21 +41,31 @@ static void registry_remover(void* data, struct wl_registry* registry,
static const struct wl_registry_listener registry_listener = {
registry_handler, registry_remover};
static void request_client_side_decorations(GtkWindow* window) {
static void kde_deco_default_mode(void* data,
struct org_kde_kwin_server_decoration_manager* mgr, uint32_t mode) {}
static const struct org_kde_kwin_server_decoration_manager_listener
kde_deco_manager_listener = {kde_deco_default_mode};
static void request_no_server_decorations(GtkWindow* window) {
GdkDisplay* display = gtk_widget_get_display(GTK_WIDGET(window));
if (!GDK_IS_WAYLAND_DISPLAY(display)) return;
struct wl_display* wl_display =
struct wl_display* wl_dpy =
gdk_wayland_display_get_wl_display(display);
struct wl_registry* registry = wl_display_get_registry(wl_display);
struct wl_registry* registry = wl_display_get_registry(wl_dpy);
wl_registry_add_listener(registry, &registry_listener, nullptr);
wl_display_roundtrip(wl_display);
wl_display_roundtrip(wl_dpy);
if (decoration_manager == nullptr) {
if (kde_deco_manager == nullptr) {
wl_registry_destroy(registry);
return;
}
org_kde_kwin_server_decoration_manager_add_listener(
kde_deco_manager, &kde_deco_manager_listener, nullptr);
wl_display_roundtrip(wl_dpy);
GdkWindow* gdk_win = gtk_widget_get_window(GTK_WIDGET(window));
if (gdk_win == nullptr) {
wl_registry_destroy(registry);
@@ -67,17 +78,14 @@ static void request_client_side_decorations(GtkWindow* window) {
return;
}
struct zxdg_toplevel_decoration_v1* toplevel_decoration =
zxdg_decoration_manager_v1_get_toplevel_decoration(
decoration_manager, surface);
if (toplevel_decoration != nullptr) {
zxdg_toplevel_decoration_v1_set_mode(
toplevel_decoration,
ZXDG_TOPLEVEL_DECORATION_V1_MODE_CLIENT_SIDE);
struct org_kde_kwin_server_decoration* deco =
org_kde_kwin_server_decoration_manager_create(kde_deco_manager, surface);
if (deco != nullptr) {
// Mode 0 = None (no decorations at all)
org_kde_kwin_server_decoration_request_mode(deco, 0);
wl_display_roundtrip(wl_dpy);
}
wl_display_roundtrip(wl_display);
wl_registry_destroy(registry);
}
#endif
@@ -88,7 +96,7 @@ static void on_window_realize(GtkWidget* widget, gpointer data) {
gdk_window_set_decorations(gdk_win, (GdkWMDecoration)0);
}
#ifdef HAS_WAYLAND_CLIENT
request_client_side_decorations(GTK_WINDOW(widget));
request_no_server_decorations(GTK_WINDOW(widget));
#endif
}