jpmschweitzer/clide
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use gdk_window_set_decorations to strip KWin SSD

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gtk_window_set_decorated alone doesn't work on KDE Wayland — KWin
adds server-side decorations regardless. Now also calling
gdk_window_set_decorations(gdk_win, 0) after realize and before
first frame show, which communicates directly with the compositor
via GDK's Wayland layer.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
jpmschweitzer
2026-04-23 09:02:45 +02:00
co-authored by Claude Opus 4.6
parent 80ad41cd62
commit 065cef24c2
1 changed files with 15 additions and 1 deletions
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linux/runner/my_application.cc
+15 -1
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@@ -14,9 +14,20 @@ struct _MyApplication {
G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
// D-057: strip all window decorations after the GdkWindow exists.
static void remove_decorations(GtkWidget* widget, gpointer data) {
(void)data;
GdkWindow* gdk_win = gtk_widget_get_window(widget);
if (gdk_win != nullptr) {
gdk_window_set_decorations(gdk_win, (GdkWMDecoration)0);
}
}
// Called when first Flutter frame received.
static void first_frame_cb(MyApplication* self, FlView* view) {
gtk_widget_show(gtk_widget_get_toplevel(GTK_WIDGET(view)));
GtkWidget* toplevel = gtk_widget_get_toplevel(GTK_WIDGET(view));
remove_decorations(toplevel, nullptr);
gtk_widget_show(toplevel);
}
// Implements GApplication::activate.
@@ -30,6 +41,9 @@ static void my_application_activate(GApplication* application) {
gtk_window_set_decorated(window, FALSE);
gtk_window_set_title(window, "clide");
// Also strip decorations via GDK after realize (catches KDE/KWin
// on Wayland which ignores gtk_window_set_decorated).
g_signal_connect(window, "realize", G_CALLBACK(remove_decorations), nullptr);
gtk_window_set_default_size(window, 1280, 720);