1 files changed, 46 insertions, 0 deletions
diff --git a/src/gui/painting/qrasterbackingstore_p.h b/src/gui/painting/qrasterbackingstore_p.h
new file mode 100644
index 0000000000..be8d122655
--- /dev/null
+++ b/src/gui/painting/qrasterbackingstore_p.h
@@ -0,0 +1,46 @@
+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QRASTERBACKINGSTORE_P_H
+#define QRASTERBACKINGSTORE_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qpa/qplatformbackingstore.h>
+#include <private/qglobal_p.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class Q_GUI_EXPORT QRasterBackingStore : public QPlatformBackingStore
+{
+public:
+    QRasterBackingStore(QWindow *window);
+    ~QRasterBackingStore();
+
+    void resize(const QSize &size, const QRegion &staticContents) override;
+    bool scroll(const QRegion &area, int dx, int dy) override;
+    void beginPaint(const QRegion &region) override;
+
+    QPaintDevice *paintDevice() override;
+    QImage toImage() const override;
+
+protected:
+    virtual QImage::Format format() const;
+
+    QImage m_image;
+    QSize m_requestedSize;
+};
+
+QT_END_NAMESPACE
+
+#endif // QRASTERBACKINGSTORE_P_H