1 files changed, 45 insertions, 0 deletions
diff --git a/vcl/source/window/bufferdevice.cxx b/vcl/source/window/bufferdevice.cxx
new file mode 100644
index 0000000000..188fbb1acc
--- /dev/null
+++ b/vcl/source/window/bufferdevice.cxx
@@ -0,0 +1,45 @@
+/* -*- 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/.
+ */
+
+#include "bufferdevice.hxx"
+
+namespace vcl
+{
+BufferDevice::BufferDevice(const VclPtr<vcl::Window>& pWindow, vcl::RenderContext& rRenderContext)
+    : m_pBuffer(VclPtr<VirtualDevice>::Create(rRenderContext))
+    , m_pWindow(pWindow)
+    , m_rRenderContext(rRenderContext)
+{
+    m_pBuffer->SetOutputSizePixel(pWindow->GetOutputSizePixel(), false);
+    m_pBuffer->SetTextColor(rRenderContext.GetTextColor());
+    m_pBuffer->DrawOutDev(Point(0, 0), pWindow->GetOutputSizePixel(), Point(0, 0),
+                          pWindow->GetOutputSizePixel(), rRenderContext);
+    m_pBuffer->EnableRTL(rRenderContext.IsRTLEnabled());
+}
+
+void BufferDevice::Dispose()
+{
+    if (m_bDisposed)
+    {
+        return;
+    }
+
+    m_rRenderContext.DrawOutDev(Point(0, 0), m_pWindow->GetOutputSizePixel(), Point(0, 0),
+                                m_pWindow->GetOutputSizePixel(), *m_pBuffer);
+    m_bDisposed = true;
+}
+
+BufferDevice::~BufferDevice() { Dispose(); }
+
+vcl::RenderContext* BufferDevice::operator->() { return m_pBuffer.get(); }
+
+vcl::RenderContext& BufferDevice::operator*() { return *m_pBuffer; }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */