Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 35 insertions, 0 deletions

diff --git a/vcl/source/window/bufferdevice.hxx b/vcl/source/window/bufferdevice.hxx
new file mode 100644
index 000000000..eafc829e5
--- /dev/null
+++ b/vcl/source/window/bufferdevice.hxx
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#pragma once
+
+#include <vcl/virdev.hxx>
+#include <vcl/window.hxx>
+
+namespace vcl
+{
+/// Buffers drawing on a vcl::RenderContext using a VirtualDevice.
+class VCL_DLLPUBLIC BufferDevice
+{
+    ScopedVclPtr<VirtualDevice> m_pBuffer;
+    VclPtr<vcl::Window> m_pWindow;
+    vcl::RenderContext& m_rRenderContext;
+    bool m_bDisposed = false;
+
+public:
+    BufferDevice(const VclPtr<vcl::Window>& pWindow, vcl::RenderContext& rRenderContext);
+    ~BufferDevice();
+    void Dispose();
+
+    vcl::RenderContext* operator->();
+    vcl::RenderContext& operator*();
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */