Add minimize feature to QWindow using wayland's xdg-shell

The feature is disabled by default,
and can be enabled at runtime
by exporting QT_WAYLAND_USE_XDG_SHELL env variable.

This patch relies on presence of protocol file
which has been imported from weston-1.4.0 sources,
until the xdg-shell is merge into wayland itself.

Because xdg-shell is experimental,
code fallback to WaylandShell if no XdgShell
but keep in mind those shells are exclusive.

Since xdg-shell and wayland-shell share most of the API,
some factorization is done by an (empty) abstraction class
to keep the code more readable.

Despite xdg-shell introduces new popups concept,
they're not used on this change for maitainance purpose.

Notes:

* This change depends on presence of xdg-shell protocol file.

* You can check a demo video
  (qt-tizen-cinematic-experience-20140430-rzr)
  of the test case at :
  https://www.youtube.com/watch?v=pY_XXvKc_0E#

* Use Super+Tab to show window again if hidden

Task-number: QTBUG-38633/part/2of2
Change-Id: I2d7ed85bea1847d82439fdfc893a3dbb2581c14a
Reviewed-by: Giulio Camuffo <giulio.camuffo@jollamobile.com>

1 files changed, 13 insertions, 27 deletions

diff --git a/src/client/qwaylandshellsurface_p.h b/src/client/qwaylandshellsurface_p.h
index 2477c3f0..2f59f60c 100644
--- a/src/client/qwaylandshellsurface_p.h
+++ b/src/client/qwaylandshellsurface_p.h
@@ -55,39 +55,25 @@ class QWaylandWindow;
 class QWaylandInputDevice;
 class QWindow;
 
-class Q_WAYLAND_CLIENT_EXPORT QWaylandShellSurface : public QtWayland::wl_shell_surface
+class Q_WAYLAND_CLIENT_EXPORT QWaylandShellSurface
 {
 public:
-    QWaylandShellSurface(struct ::wl_shell_surface *shell_surface, QWaylandWindow *window);
-    ~QWaylandShellSurface();
+    virtual ~QWaylandShellSurface() {}
+    virtual void resize(QWaylandInputDevice * /*inputDevice*/, enum wl_shell_surface_resize /*edges*/)
+    {}
 
-    using QtWayland::wl_shell_surface::resize;
-    void resize(QWaylandInputDevice *inputDevice, enum wl_shell_surface_resize edges);
-
-    using QtWayland::wl_shell_surface::move;
-    void move(QWaylandInputDevice *inputDevice);
+    virtual void move(QWaylandInputDevice * /*inputDevice*/) {}
+    virtual void setTitle(const QString & /*title*/) {}
+    virtual void setAppId(const QString & /*appId*/) {}
 
 private:
-    void setMaximized();
-    void setFullscreen();
-    void setNormal();
-    void setMinimized();
-
-    void setTopLevel();
-    void updateTransientParent(QWindow *parent);
-    void setPopup(QWaylandWindow *parent, QWaylandInputDevice *device, int serial);
-
-    QWaylandWindow *m_window;
-    bool m_maximized;
-    bool m_fullscreen;
-    QSize m_size;
-
-    void shell_surface_ping(uint32_t serial) Q_DECL_OVERRIDE;
-    void shell_surface_configure(uint32_t edges,
-                                 int32_t width,
-                                 int32_t height) Q_DECL_OVERRIDE;
-    void shell_surface_popup_done() Q_DECL_OVERRIDE;
+    virtual void setMaximized() {}
+    virtual void setFullscreen() {}
+    virtual void setNormal() {}
+    virtual void setMinimized() {}
 
+    virtual void setTopLevel() {}
+    virtual void updateTransientParent(QWindow * /*parent*/) {}
     friend class QWaylandWindow;
 };