Shuffle things around in preparation for Direct2D platform plugin

Add a layer of abstraction in some spots where the Direct2D plugin will hook in.

Change-Id: Ifca7daf6ad0284af52a81822e970c2317d339234
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>

1 files changed, 62 insertions, 0 deletions

diff --git a/src/plugins/platforms/windows/qwindowsgdinativeinterface.cpp b/src/plugins/platforms/windows/qwindowsgdinativeinterface.cpp
new file mode 100644
index 0000000000..c1b0c139c9
--- /dev/null
+++ b/src/plugins/platforms/windows/qwindowsgdinativeinterface.cpp
@@ -0,0 +1,62 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the plugins 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.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwindowsgdinativeinterface.h"
+#include "qwindowsbackingstore.h"
+
+#include <QtGui/QBackingStore>
+
+QT_BEGIN_NAMESPACE
+
+void *QWindowsGdiNativeInterface::nativeResourceForBackingStore(const QByteArray &resource, QBackingStore *bs)
+{
+    if (!bs || !bs->handle()) {
+        qWarning("%s: '%s' requested for null backingstore or backingstore without handle.", __FUNCTION__, resource.constData());
+        return 0;
+    }
+    QWindowsBackingStore *wbs = static_cast<QWindowsBackingStore *>(bs->handle());
+    if (resource == "getDC")
+        return wbs->getDC();
+    qWarning("%s: Invalid key '%s' requested.", __FUNCTION__, resource.constData());
+    return 0;
+}
+
+QT_END_NAMESPACE