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, 101 insertions, 0 deletions

diff --git a/src/client/qwaylandwlshellsurface_p.h b/src/client/qwaylandwlshellsurface_p.h
new file mode 100644
index 000000000..d02bb7bfe
--- /dev/null
+++ b/src/client/qwaylandwlshellsurface_p.h
@@ -0,0 +1,101 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the config.tests of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWAYLANDWLSHELLSURFACE_H
+#define QWAYLANDWLSHELLSURFACE_H
+
+#include <QtCore/QSize>
+
+#include <wayland-client.h>
+
+#include <QtWaylandClient/private/qwayland-wayland.h>
+#include <QtWaylandClient/private/qwaylandclientexport_p.h>
+#include "qwaylandshellsurface_p.h"
+
+QT_BEGIN_NAMESPACE
+
+class QWaylandWindow;
+class QWaylandInputDevice;
+class QWindow;
+
+class Q_WAYLAND_CLIENT_EXPORT QWaylandWlShellSurface : public QtWayland::wl_shell_surface
+        , public QWaylandShellSurface
+{
+public:
+    QWaylandWlShellSurface(struct ::wl_shell_surface *shell_surface, QWaylandWindow *window);
+    virtual ~QWaylandWlShellSurface();
+
+    using QtWayland::wl_shell_surface::resize;
+    void resize(QWaylandInputDevice *inputDevice, enum wl_shell_surface_resize edges) Q_DECL_OVERRIDE;
+
+    using QtWayland::wl_shell_surface::move;
+    void move(QWaylandInputDevice *inputDevice) Q_DECL_OVERRIDE;
+
+    void setTitle(const QString & title) Q_DECL_OVERRIDE;
+    void setAppId(const QString &appId) Q_DECL_OVERRIDE;
+
+private:
+    void setMaximized() Q_DECL_OVERRIDE;
+    void setFullscreen() Q_DECL_OVERRIDE;
+    void setNormal() Q_DECL_OVERRIDE;
+    void setMinimized() Q_DECL_OVERRIDE;
+
+    void setTopLevel() Q_DECL_OVERRIDE;
+    void updateTransientParent(QWindow *parent) Q_DECL_OVERRIDE;
+    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;
+
+    friend class QWaylandWindow;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWAYLANDSHELLSURFACE_H