Added QPlatformScreenBuffer

And moved the pageflipper into its own file

Done with: Paul

Change-Id: I0af34075ce8673a66025cb761c0fe4ff6c0ab0fe
Reviewed-by: Jason Barron <jason.barron@nokia.com>

src/gui/kernel/kernel.pri

@@ -56,7 +56,8 @@ HEADERS += \
         kernel/qtouchdevice_p.h \
         kernel/qplatformsharedgraphicscache_qpa.h \
         kernel/qplatformdialoghelper_qpa.h \
-        kernel/qplatformservices_qpa.h
+        kernel/qplatformservices_qpa.h \
+        kernel/qplatformscreenpageflipper_qpa.h
 
 SOURCES += \
         kernel/qclipboard_qpa.cpp \
@@ -100,7 +101,8 @@ SOURCES += \
         kernel/qtouchdevice.cpp \
         kernel/qplatformsharedgraphicscache_qpa.cpp \
         kernel/qplatformdialoghelper_qpa.cpp \
-        kernel/qplatformservices_qpa.cpp
+        kernel/qplatformservices_qpa.cpp \
+        kernel/qplatformscreenpageflipper_qpa.cpp
 
 contains(QT_CONFIG, opengl)|contains(QT_CONFIG, opengles2)|contains(QT_CONFIG, egl) {
     HEADERS += \

src/gui/kernel/qplatformscreen_qpa.h

@@ -63,21 +63,12 @@ class QPlatformBackingStore;
 class QPlatformOpenGLContext;
 class QPlatformScreenPrivate;
 class QPlatformWindow;
+class QPlatformScreenPageFlipper;
 class QScreen;
 class QSurfaceFormat;
 
 typedef QPair<qreal, qreal> QDpi;
 
-class Q_GUI_EXPORT QPlatformScreenPageFlipper : public QObject
-{
-    Q_OBJECT
-public:
-    virtual bool displayBuffer(void *bufferHandle) = 0;
-
-    signals:
-    void bufferDisplayed(void *bufferHandle);
-    void bufferReleased(void *bufferHandle);
-};
 
 class Q_GUI_EXPORT QPlatformScreen
 {

src/gui/kernel/qplatformscreenpageflipper_qpa.cpp

@@ -0,0 +1,83 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformscreenpageflipper_qpa.h"
+
+QT_BEGIN_NAMESPACE
+
+QPlatformScreenBuffer::QPlatformScreenBuffer()
+    : m_destroyed(false)
+    , m_ready(true)
+{
+
+}
+
+QPlatformScreenBuffer::~QPlatformScreenBuffer()
+{
+
+}
+
+bool QPlatformScreenBuffer::isDestroyed() const
+{
+    return m_destroyed;
+}
+
+bool QPlatformScreenBuffer::isReady() const
+{
+    return m_ready;
+}
+
+void QPlatformScreenBuffer::aboutToBeDisplayed()
+{
+}
+
+void QPlatformScreenBuffer::displayed()
+{
+}
+
+QPlatformScreenPageFlipper::QPlatformScreenPageFlipper(QObject *parent)
+    :QObject(parent)
+{
+
+}
+
+QT_END_NAMESPACE
+

src/gui/kernel/qplatformscreenpageflipper_qpa.h

@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLATFORMSCREENPAGEFLIPPER_QPA_H
+#define QPLATFORMSCREENPAGEFLIPPER_QPA_H
+
+#include <QtCore/QObject>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QPlatformScreenBuffer {
+public:
+    QPlatformScreenBuffer();
+    virtual ~QPlatformScreenBuffer();
+
+    bool isDestroyed() const;
+    bool isReady() const;
+
+    virtual void aboutToBeDisplayed();
+    virtual void displayed();
+    virtual void release() = 0;
+
+    virtual void *handle() const = 0;
+
+protected:
+    bool m_destroyed;
+    bool m_ready;
+};
+
+class Q_GUI_EXPORT QPlatformScreenPageFlipper : public QObject
+{
+    Q_OBJECT
+public:
+    explicit QPlatformScreenPageFlipper(QObject *parent = 0);
+
+    virtual bool displayBuffer(QPlatformScreenBuffer *) = 0;
+
+signals:
+    void bufferDisplayed(QPlatformScreenBuffer *);
+    void bufferReleased(QPlatformScreenBuffer *);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QPLATFORMSCREENPAGEFLIPPER_QPA_H