1 files changed, 128 insertions, 0 deletions
diff --git a/canvas/source/vcl/spritedevicehelper.cxx b/canvas/source/vcl/spritedevicehelper.cxx
new file mode 100644
index 000000000..01994f55c
--- /dev/null
+++ b/canvas/source/vcl/spritedevicehelper.cxx
@@ -0,0 +1,128 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <osl/diagnose.h>
+#include <vcl/bitmapex.hxx>
+#include <vcl/dibtools.hxx>
+#include <tools/stream.hxx>
+
+#include "spritedevicehelper.hxx"
+
+using namespace ::com::sun::star;
+
+namespace vclcanvas
+{
+    SpriteDeviceHelper::SpriteDeviceHelper() :
+        mpBackBuffer()
+    {
+    }
+
+    void SpriteDeviceHelper::init( const OutDevProviderSharedPtr& pOutDev )
+    {
+        DeviceHelper::init(pOutDev);
+
+        // setup back buffer
+        OutputDevice& rOutDev( pOutDev->getOutDev() );
+        mpBackBuffer = std::make_shared<BackBuffer>( rOutDev );
+        mpBackBuffer->setSize( rOutDev.GetOutputSizePixel() );
+
+        // #i95645#
+#if defined( MACOSX )
+        // use AA on VCLCanvas for Mac
+        mpBackBuffer->getOutDev().SetAntialiasing( AntialiasingFlags::EnableB2dDraw | mpBackBuffer->getOutDev().GetAntialiasing() );
+#else
+        // switch off AA for WIN32 and UNIX, the VCLCanvas does not look good with it and
+        // is not required to do AA. It would need to be adapted to use it correctly
+        // (especially gradient painting). This will need extra work.
+        mpBackBuffer->getOutDev().SetAntialiasing(mpBackBuffer->getOutDev().GetAntialiasing() & ~AntialiasingFlags::EnableB2dDraw);
+#endif
+    }
+
+    bool SpriteDeviceHelper::showBuffer( bool, bool )
+    {
+        OSL_FAIL("Not supposed to be called, handled by SpriteCanvas");
+        return false;
+    }
+
+    bool SpriteDeviceHelper::switchBuffer( bool, bool )
+    {
+        OSL_FAIL("Not supposed to be called, handled by SpriteCanvas");
+        return false;
+    }
+
+    void SpriteDeviceHelper::disposing()
+    {
+        // release all references
+        mpBackBuffer.reset();
+
+        DeviceHelper::disposing();
+    }
+
+    uno::Any SpriteDeviceHelper::isAccelerated() const
+    {
+        return DeviceHelper::isAccelerated();
+    }
+
+    uno::Any SpriteDeviceHelper::getDeviceHandle() const
+    {
+        return DeviceHelper::getDeviceHandle();
+    }
+
+    uno::Any SpriteDeviceHelper::getSurfaceHandle() const
+    {
+        if( !mpBackBuffer )
+            return uno::Any();
+
+        return uno::Any(
+            reinterpret_cast< sal_Int64 >(&mpBackBuffer->getOutDev()) );
+    }
+
+    void SpriteDeviceHelper::notifySizeUpdate( const awt::Rectangle& rBounds )
+    {
+        if( mpBackBuffer )
+            mpBackBuffer->setSize( ::Size(rBounds.Width,
+                                          rBounds.Height) );
+    }
+
+    void SpriteDeviceHelper::dumpScreenContent() const
+    {
+        DeviceHelper::dumpScreenContent();
+
+        static sal_Int32 nFilePostfixCount(0);
+
+        if( mpBackBuffer )
+        {
+            OUString aFilename = "dbg_backbuffer" + OUString::number(nFilePostfixCount) + ".bmp";
+
+            SvFileStream aStream( aFilename, StreamMode::STD_READWRITE );
+
+            const ::Point aEmptyPoint;
+            mpBackBuffer->getOutDev().EnableMapMode( false );
+            mpBackBuffer->getOutDev().SetAntialiasing( AntialiasingFlags::EnableB2dDraw );
+            WriteDIB(mpBackBuffer->getOutDev().GetBitmapEx(aEmptyPoint, mpBackBuffer->getOutDev().GetOutputSizePixel()), aStream, false);
+        }
+
+        ++nFilePostfixCount;
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */