Add a native interface with the possibility to query the window group

This is needed for QtMultimedia, as it uses the native mmrenderer API
which expects to get passed the window group when creating a video
overlay window.

Change-Id: I07d790e6e20714741c04917068b41b71b8939fa4
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>

src/plugins/platforms/qnx/qnx.pro

@@ -38,8 +38,8 @@ SOURCES =   main.cpp \
             qqnxclipboard.cpp \
             qqnxrootwindow.cpp \
             qqnxscreeneventhandler.cpp \
-            qqnxabstractvirtualkeyboard.cpp
+            qqnxabstractvirtualkeyboard.cpp \
-
+            qqnxnativeinterface.cpp
 
 HEADERS =   qqnxbuffer.h \
             qqnxeventthread.h \
@@ -55,7 +55,8 @@ HEADERS =   qqnxbuffer.h \
             qqnxclipboard.h \
             qqnxrootwindow.h \
             qqnxscreeneventhandler.h \
-            qqnxabstractvirtualkeyboard.h
+            qqnxabstractvirtualkeyboard.h \
+            qqnxnativeinterface.h
 
 CONFIG(blackberry) {
     SOURCES += qqnxservices.cpp

src/plugins/platforms/qnx/qqnxintegration.cpp

@@ -43,6 +43,7 @@
 #include "qqnxeventthread.h"
 #include "qqnxglbackingstore.h"
 #include "qqnxglcontext.h"
+#include "qqnxnativeinterface.h"
 #include "qqnxnavigatoreventhandler.h"
 #include "qqnxrasterbackingstore.h"
 #include "qqnxscreen.h"
@@ -85,6 +86,7 @@ QQnxIntegration::QQnxIntegration()
     , m_fontDatabase(new QGenericUnixFontDatabase())
     , m_paintUsingOpenGL(false)
     , m_eventDispatcher(createUnixEventDispatcher())
+    , m_nativeInterface(new QQnxNativeInterface())
     , m_services(0)
     , m_screenEventHandler(new QQnxScreenEventHandler())
 #ifndef QT_NO_CLIPBOARD
@@ -149,6 +151,8 @@ QQnxIntegration::~QQnxIntegration()
 
     delete m_screenEventHandler;
 
+    delete m_nativeInterface;
+
     // Destroy input context
     delete m_inputContext;
 
@@ -259,6 +263,11 @@ QAbstractEventDispatcher *QQnxIntegration::guiThreadEventDispatcher() const
     return m_eventDispatcher;
 }
 
+QPlatformNativeInterface *QQnxIntegration::nativeInterface() const
+{
+    return m_nativeInterface;
+}
+
 #ifndef QT_NO_CLIPBOARD
 QPlatformClipboard *QQnxIntegration::clipboard() const
 {

src/plugins/platforms/qnx/qqnxintegration.h

@@ -52,6 +52,7 @@ QT_BEGIN_NAMESPACE
 
 class QQnxEventThread;
 class QQnxInputContext;
+class QQnxNativeInterface;
 class QQnxNavigatorEventHandler;
 class QQnxAbstractVirtualKeyboard;
 class QQnxWindow;
@@ -86,6 +87,8 @@ public:
 
     QPlatformFontDatabase *fontDatabase() const { return m_fontDatabase; }
 
+    QPlatformNativeInterface *nativeInterface() const;
+
 #ifndef QT_NO_CLIPBOARD
     QPlatformClipboard *clipboard() const;
 #endif
@@ -114,6 +117,7 @@ private:
     QPlatformFontDatabase *m_fontDatabase;
     bool m_paintUsingOpenGL;
     QAbstractEventDispatcher *m_eventDispatcher;
+    QQnxNativeInterface *m_nativeInterface;
     QQnxServices *m_services;
     QList<QQnxScreen*> m_screens;
     QQnxScreenEventHandler *m_screenEventHandler;

src/plugins/platforms/qnx/qqnxnativeinterface.cpp

@@ -0,0 +1,65 @@
+/***************************************************************************
+**
+** Copyright (C) 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins 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 "qqnxnativeinterface.h"
+
+#include "qqnxscreen.h"
+
+#include <QtGui/QScreen>
+#include <QtGui/QWindow>
+
+QT_BEGIN_NAMESPACE
+
+void *QQnxNativeInterface::nativeResourceForWindow(const QByteArray &resource, QWindow *window)
+{
+    if (resource == "windowGroup" && window && window->screen()) {
+        const QQnxScreen * const screen = static_cast<QQnxScreen *>(window->screen()->handle());
+        if (screen) {
+            // We can't just call data() instead of constData() here, since that would detach
+            // and the lifetime of the char * would not be long enough. Therefore the const_cast.
+            return const_cast<char *>(screen->rootWindow()->groupName().constData());
+        }
+    }
+
+    return 0;
+}
+
+QT_END_NAMESPACE

src/plugins/platforms/qnx/qqnxnativeinterface.h

@@ -0,0 +1,57 @@
+/***************************************************************************
+**
+** Copyright (C) 2012 Research In Motion
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the plugins 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 QQNXNATIVEINTERFACE_H
+#define QQNXNATIVEINTERFACE_H
+
+#include <QtGui/QPlatformNativeInterface>
+
+QT_BEGIN_NAMESPACE
+
+class QQnxNativeInterface : public QPlatformNativeInterface
+{
+public:
+    void *nativeResourceForWindow(const QByteArray &resource, QWindow *window);
+};
+
+QT_END_NAMESPACE
+
+#endif // QQNXNATIVEINTERFACE_H