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Diffstat (limited to '')
| -rw-r--r-- | canvas/source/cairo/cairo_devicehelper.cxx | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/canvas/source/cairo/cairo_devicehelper.cxx b/canvas/source/cairo/cairo_devicehelper.cxx new file mode 100644 index 0000000000..3d3f7ef830 --- /dev/null +++ b/canvas/source/cairo/cairo_devicehelper.cxx @@ -0,0 +1,257 @@ +/* -*- 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.getWidth() << " x " << rSize.getHeight()); + + if( !mpRefDevice ) + return; // disposed + + OutputDevice* pOutDev = getOutputDevice(); + + // X11 only + bool bReuseSurface = mpSurface && + mpSurface->Resize(rSize.getWidth() + pOutDev->GetOutOffXPixel(), + rSize.getHeight() + pOutDev->GetOutOffYPixel()); + + if (!bReuseSurface) + { + mpSurface = pOutDev->CreateSurface( + pOutDev->GetOutOffXPixel(), + pOutDev->GetOutOffYPixel(), + rSize.getWidth(), rSize.getHeight() ); + } + } + + 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.getWidth(), rSize.getHeight() ); + + 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: */ |