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diff --git a/canvas/source/cairo/cairo_devicehelper.cxx b/canvas/source/cairo/cairo_devicehelper.cxx
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+/* -*- 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 <sal/log.hxx>
+
+#include <basegfx/utils/canvastools.hxx>
+#include <basegfx/utils/unopolypolygon.hxx>
+#include <tools/stream.hxx>
+#include <vcl/bitmapex.hxx>
+#include <vcl/canvastools.hxx>
+#include <vcl/dibtools.hxx>
+
+#include <canvas/canvastools.hxx>
+
+#include "cairo_canvasbitmap.hxx"
+#include "cairo_devicehelper.hxx"
+
+using namespace ::cairo;
+using namespace ::com::sun::star;
+
+namespace cairocanvas
+{
+ DeviceHelper::DeviceHelper() :
+ mpSurfaceProvider( nullptr ),
+ mpRefDevice( nullptr )
+ {
+ }
+
+ void DeviceHelper::implInit( SurfaceProvider& rSurfaceProvider,
+ OutputDevice& rRefDevice )
+ {
+ mpSurfaceProvider = &rSurfaceProvider;
+ mpRefDevice = &rRefDevice;
+
+ // no own surface, this is handled by derived classes
+ }
+
+ void DeviceHelper::init( SurfaceProvider& rSurfaceProvider,
+ OutputDevice& rRefDevice )
+ {
+ implInit(rSurfaceProvider, rRefDevice);
+
+ OutputDevice* pOutDev = getOutputDevice();
+ mpSurface = pOutDev->CreateSurface(pOutDev->GetOutOffXPixel(),
+ pOutDev->GetOutOffYPixel(),
+ pOutDev->GetOutputWidthPixel(),
+ pOutDev->GetOutputHeightPixel());
+ }
+
+ void DeviceHelper::disposing()
+ {
+ // release all references
+ mpSurface.reset();
+ mpRefDevice = nullptr;
+ mpSurfaceProvider = nullptr;
+ }
+
+ void DeviceHelper::setSize( const ::basegfx::B2ISize& rSize )
+ {
+ SAL_INFO(
+ "canvas.cairo",
+ "device size " << rSize.getX() << " x " << rSize.getY());
+
+ if( !mpRefDevice )
+ return; // disposed
+
+ OutputDevice* pOutDev = getOutputDevice();
+
+ // X11 only
+ bool bReuseSurface = mpSurface &&
+ mpSurface->Resize(rSize.getX() + pOutDev->GetOutOffXPixel(),
+ rSize.getY() + pOutDev->GetOutOffYPixel());
+
+ if (!bReuseSurface)
+ {
+ mpSurface = pOutDev->CreateSurface(
+ pOutDev->GetOutOffXPixel(),
+ pOutDev->GetOutOffYPixel(),
+ rSize.getX(), rSize.getY() );
+ }
+ }
+
+ geometry::RealSize2D DeviceHelper::getPhysicalResolution()
+ {
+ // Map a one-by-one millimeter box to pixel
+ const MapMode aOldMapMode( mpRefDevice->GetMapMode() );
+ mpRefDevice->SetMapMode( MapMode(MapUnit::MapMM) );
+ const Size aPixelSize( mpRefDevice->LogicToPixel(Size(1,1)) );
+ mpRefDevice->SetMapMode( aOldMapMode );
+
+ return vcl::unotools::size2DFromSize( aPixelSize );
+ }
+
+ geometry::RealSize2D DeviceHelper::getPhysicalSize()
+ {
+ if( !mpRefDevice )
+ return ::canvas::tools::createInfiniteSize2D(); // we're disposed
+
+ // Map the pixel dimensions of the output window to millimeter
+ const MapMode aOldMapMode( mpRefDevice->GetMapMode() );
+ mpRefDevice->SetMapMode( MapMode(MapUnit::MapMM) );
+ const Size aLogSize( mpRefDevice->PixelToLogic(mpRefDevice->GetOutputSizePixel()) );
+ mpRefDevice->SetMapMode( aOldMapMode );
+
+ return vcl::unotools::size2DFromSize( aLogSize );
+ }
+
+ uno::Reference< rendering::XLinePolyPolygon2D > DeviceHelper::createCompatibleLinePolyPolygon(
+ const uno::Reference< rendering::XGraphicDevice >& ,
+ const uno::Sequence< uno::Sequence< geometry::RealPoint2D > >& points )
+ {
+ // disposed?
+ if( !mpSurfaceProvider )
+ return uno::Reference< rendering::XLinePolyPolygon2D >(); // we're disposed
+
+ return uno::Reference< rendering::XLinePolyPolygon2D >(
+ new ::basegfx::unotools::UnoPolyPolygon(
+ ::basegfx::unotools::polyPolygonFromPoint2DSequenceSequence( points ) ) );
+ }
+
+ uno::Reference< rendering::XBezierPolyPolygon2D > DeviceHelper::createCompatibleBezierPolyPolygon(
+ const uno::Reference< rendering::XGraphicDevice >& ,
+ const uno::Sequence< uno::Sequence< geometry::RealBezierSegment2D > >& points )
+ {
+ // disposed?
+ if( !mpSurfaceProvider )
+ return uno::Reference< rendering::XBezierPolyPolygon2D >(); // we're disposed
+
+ return uno::Reference< rendering::XBezierPolyPolygon2D >(
+ new ::basegfx::unotools::UnoPolyPolygon(
+ ::basegfx::unotools::polyPolygonFromBezier2DSequenceSequence( points ) ) );
+ }
+
+ uno::Reference< rendering::XBitmap > DeviceHelper::createCompatibleBitmap(
+ const uno::Reference< rendering::XGraphicDevice >& rDevice,
+ const geometry::IntegerSize2D& size )
+ {
+ // disposed?
+ if( !mpSurfaceProvider )
+ return uno::Reference< rendering::XBitmap >(); // we're disposed
+
+ return uno::Reference< rendering::XBitmap >(
+ new CanvasBitmap(
+ ::basegfx::unotools::b2ISizeFromIntegerSize2D( size ),
+ SurfaceProviderRef(mpSurfaceProvider),
+ rDevice.get(),
+ false ));
+ }
+
+ uno::Reference< rendering::XVolatileBitmap > DeviceHelper::createVolatileBitmap(
+ const uno::Reference< rendering::XGraphicDevice >& ,
+ const geometry::IntegerSize2D& /*size*/ )
+ {
+ return uno::Reference< rendering::XVolatileBitmap >();
+ }
+
+ uno::Reference< rendering::XBitmap > DeviceHelper::createCompatibleAlphaBitmap(
+ const uno::Reference< rendering::XGraphicDevice >& rDevice,
+ const geometry::IntegerSize2D& size )
+ {
+ // disposed?
+ if( !mpSurfaceProvider )
+ return uno::Reference< rendering::XBitmap >(); // we're disposed
+
+ return uno::Reference< rendering::XBitmap >(
+ new CanvasBitmap(
+ ::basegfx::unotools::b2ISizeFromIntegerSize2D( size ),
+ SurfaceProviderRef(mpSurfaceProvider),
+ rDevice.get(),
+ true ));
+ }
+
+ uno::Reference< rendering::XVolatileBitmap > DeviceHelper::createVolatileAlphaBitmap(
+ const uno::Reference< rendering::XGraphicDevice >& ,
+ const geometry::IntegerSize2D& /*size*/ )
+ {
+ return uno::Reference< rendering::XVolatileBitmap >();
+ }
+
+ uno::Any DeviceHelper::isAccelerated() const
+ {
+ return css::uno::Any(false);
+ }
+
+ uno::Any DeviceHelper::getDeviceHandle() const
+ {
+ return uno::Any( reinterpret_cast< sal_Int64 >(mpRefDevice.get()) );
+ }
+
+ uno::Any DeviceHelper::getSurfaceHandle() const
+ {
+ return uno::Any();
+ }
+
+ uno::Reference<rendering::XColorSpace> const & DeviceHelper::getColorSpace() const
+ {
+ static uno::Reference<rendering::XColorSpace> SPACE = vcl::unotools::createStandardColorSpace();
+ // always the same
+ return SPACE;
+ }
+
+ void DeviceHelper::dumpScreenContent() const
+ {
+ static sal_Int32 nFilePostfixCount(0);
+
+ if( !mpRefDevice )
+ return;
+
+ OUString aFilename = "dbg_frontbuffer" + OUString::number(nFilePostfixCount) + ".bmp";
+
+ SvFileStream aStream( aFilename, StreamMode::STD_READWRITE );
+
+ const ::Point aEmptyPoint;
+ bool bOldMap( mpRefDevice->IsMapModeEnabled() );
+ mpRefDevice->EnableMapMode( false );
+ const ::BitmapEx aTempBitmap(mpRefDevice->GetBitmapEx(aEmptyPoint, mpRefDevice->GetOutputSizePixel()));
+ WriteDIB(aTempBitmap, aStream, false);
+ mpRefDevice->EnableMapMode( bOldMap );
+
+ ++nFilePostfixCount;
+ }
+
+ SurfaceSharedPtr DeviceHelper::createSurface( const ::basegfx::B2ISize& rSize, int aContent )
+ {
+ if( mpSurface )
+ return mpSurface->getSimilar( aContent, rSize.getX(), rSize.getY() );
+
+ return SurfaceSharedPtr();
+ }
+
+ SurfaceSharedPtr DeviceHelper::createSurface( BitmapSystemData const & rData, const Size& rSize )
+ {
+ if (mpRefDevice)
+ return mpRefDevice->CreateBitmapSurface(rData, rSize);
+
+ return SurfaceSharedPtr();
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */