Compositor API: Add xdg-decoration unstable v1 support

And add an example with server-side window decorations.

Task-number: QTBUG-69934
Change-Id: Ic3984b50cf7574cae5135dea51eb4b1c80bb45a7
Reviewed-by: Paul Olav Tvete <paul.tvete@qt.io>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/compositor/extensions/qwaylandxdgshell.h b/src/compositor/extensions/qwaylandxdgshell.h
index 5467290f6..bcc316e85 100644
--- a/src/compositor/extensions/qwaylandxdgshell.h
+++ b/src/compositor/extensions/qwaylandxdgshell.h
@@ -150,6 +150,7 @@ class Q_WAYLAND_COMPOSITOR_EXPORT QWaylandXdgToplevel : public QObject
     Q_PROPERTY(bool fullscreen READ fullscreen NOTIFY fullscreenChanged)
     Q_PROPERTY(bool resizing READ resizing NOTIFY resizingChanged)
     Q_PROPERTY(bool activated READ activated NOTIFY activatedChanged)
+    Q_PROPERTY(enum DecorationMode decorationMode READ decorationMode NOTIFY decorationModeChanged)
 public:
     enum State : uint {
         MaximizedState  = 1,
@@ -159,6 +160,13 @@ public:
     };
     Q_ENUM(State)
 
+    enum DecorationMode {
+        DefaultDecorationMode,
+        ClientSideDecoration,
+        ServerSideDecoration,
+    };
+    Q_ENUM(DecorationMode)
+
     QWaylandXdgToplevel(QWaylandXdgSurface *xdgSurface, QWaylandResource &resource);
 
     QWaylandXdgToplevel *parentToplevel() const;
@@ -172,6 +180,7 @@ public:
     bool fullscreen() const;
     bool resizing() const;
     bool activated() const;
+    DecorationMode decorationMode() const;
 
     Q_INVOKABLE QSize sizeForResize(const QSizeF &size, const QPointF &delta, Qt::Edges edges) const;
     uint sendConfigure(const QSize &size, const QVector<State> &states);
@@ -206,6 +215,8 @@ Q_SIGNALS:
     void unsetFullscreen();
     void setMinimized();
 
+    void decorationModeChanged();
+
 private:
     QList<int> statesAsInts() const;
 };