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Diffstat (limited to 'canvas/source/directx/dx_canvashelper.cxx')
| -rw-r--r-- | canvas/source/directx/dx_canvashelper.cxx | 791 |
1 files changed, 791 insertions, 0 deletions
diff --git a/canvas/source/directx/dx_canvashelper.cxx b/canvas/source/directx/dx_canvashelper.cxx new file mode 100644 index 000000000..927f83824 --- /dev/null +++ b/canvas/source/directx/dx_canvashelper.cxx @@ -0,0 +1,791 @@ +/* -*- 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 <algorithm> + +#include <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/matrix/b2dhommatrixtools.hxx> +#include <basegfx/point/b2dpoint.hxx> +#include <basegfx/utils/canvastools.hxx> +#include <com/sun/star/rendering/CompositeOperation.hpp> +#include <com/sun/star/rendering/PathCapType.hpp> +#include <com/sun/star/rendering/PathJoinType.hpp> +#include <com/sun/star/rendering/RepaintResult.hpp> +#include <com/sun/star/rendering/TexturingMode.hpp> +#include <comphelper/sequence.hxx> +#include <o3tl/char16_t2wchar_t.hxx> +#include <rtl/math.hxx> +#include <tools/diagnose_ex.h> + +#include <canvas/canvastools.hxx> + +#include "dx_canvasfont.hxx" +#include "dx_canvashelper.hxx" +#include "dx_impltools.hxx" +#include "dx_spritecanvas.hxx" +#include "dx_textlayout.hxx" +#include "dx_vcltools.hxx" + +using namespace ::com::sun::star; + +namespace dxcanvas +{ + namespace + { + Gdiplus::LineCap gdiCapFromCap( sal_Int8 nCapType ) + { + switch( nCapType ) + { + case rendering::PathCapType::BUTT: + return Gdiplus::LineCapFlat; + + case rendering::PathCapType::ROUND: + return Gdiplus::LineCapRound; + + case rendering::PathCapType::SQUARE: + return Gdiplus::LineCapSquare; + + default: + ENSURE_OR_THROW( false, + "gdiCapFromCap(): Unexpected cap type" ); + } + + return Gdiplus::LineCapFlat; + } + + Gdiplus::LineJoin gdiJoinFromJoin( sal_Int8 nJoinType ) + { + switch( nJoinType ) + { + case rendering::PathJoinType::NONE: + SAL_WARN( "canvas.directx", "gdiJoinFromJoin(): Join NONE not possible, mapping to BEVEL (closest to NONE)" ); + return Gdiplus::LineJoinBevel; + + case rendering::PathJoinType::MITER: + // in GDI+ fallback to Bevel, if miter limit is exceeded, is not done + // by Gdiplus::LineJoinMiter but by Gdiplus::LineJoinMiterClipped + return Gdiplus::LineJoinMiterClipped; + + case rendering::PathJoinType::ROUND: + return Gdiplus::LineJoinRound; + + case rendering::PathJoinType::BEVEL: + return Gdiplus::LineJoinBevel; + + default: + ENSURE_OR_THROW( false, + "gdiJoinFromJoin(): Unexpected join type" ); + } + + return Gdiplus::LineJoinMiter; + } + } + + CanvasHelper::CanvasHelper() : + mpGdiPlusUser( GDIPlusUser::createInstance() ), + mpDevice( nullptr ), + mpGraphicsProvider(), + maOutputOffset() + { + } + + void CanvasHelper::disposing() + { + mpGraphicsProvider.reset(); + mpDevice = nullptr; + mpGdiPlusUser.reset(); + } + + void CanvasHelper::setDevice( rendering::XGraphicDevice& rDevice ) + { + mpDevice = &rDevice; + } + + void CanvasHelper::setTarget( const GraphicsProviderSharedPtr& rTarget ) + { + ENSURE_OR_THROW( rTarget, + "CanvasHelper::setTarget(): Invalid target" ); + ENSURE_OR_THROW( !mpGraphicsProvider.get(), + "CanvasHelper::setTarget(): target set, old target would be overwritten" ); + + mpGraphicsProvider = rTarget; + } + + void CanvasHelper::setTarget( const GraphicsProviderSharedPtr& rTarget, + const ::basegfx::B2ISize& rOutputOffset ) + { + ENSURE_OR_THROW( rTarget, + "CanvasHelper::setTarget(): invalid target" ); + ENSURE_OR_THROW( !mpGraphicsProvider.get(), + "CanvasHelper::setTarget(): target set, old target would be overwritten" ); + + mpGraphicsProvider = rTarget; + maOutputOffset = rOutputOffset; + } + + void CanvasHelper::clear() + { + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + Gdiplus::Color aClearColor{Gdiplus::ARGB(Gdiplus::Color::White)}; + + ENSURE_OR_THROW( + Gdiplus::Ok == pGraphics->SetCompositingMode( + Gdiplus::CompositingModeSourceCopy ), // force set, don't blend + "CanvasHelper::clear(): GDI+ SetCompositingMode call failed" ); + ENSURE_OR_THROW( + Gdiplus::Ok == pGraphics->Clear( aClearColor ), + "CanvasHelper::clear(): GDI+ Clear call failed" ); + } + } + + void CanvasHelper::drawPoint( const rendering::XCanvas* /*pCanvas*/, + const geometry::RealPoint2D& aPoint, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::SolidBrush aBrush( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor)) ); + + // determine size of one-by-one device pixel ellipse + Gdiplus::Matrix aMatrix; + pGraphics->GetTransform(&aMatrix); + aMatrix.Invert(); + Gdiplus::PointF vector(1, 1); + aMatrix.TransformVectors(&vector); + + // paint a one-by-one circle, with the given point + // in the middle (rounded to float) + ENSURE_OR_THROW( + Gdiplus::Ok == pGraphics->FillEllipse( &aBrush, + // disambiguate call + Gdiplus::REAL(aPoint.X), + Gdiplus::REAL(aPoint.Y), + Gdiplus::REAL(vector.X), + Gdiplus::REAL(vector.Y) ), + "CanvasHelper::drawPoint(): GDI+ call failed" ); + } + } + + void CanvasHelper::drawLine( const rendering::XCanvas* /*pCanvas*/, + const geometry::RealPoint2D& aStartPoint, + const geometry::RealPoint2D& aEndPoint, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::Pen aPen( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor)), + Gdiplus::REAL(0.0) ); + + // #122683# Switched precedence of pixel offset + // mode. Seemingly, polygon stroking needs + // PixelOffsetModeNone to achieve visually pleasing + // results, whereas all other operations (e.g. polygon + // fills, bitmaps) look better with PixelOffsetModeHalf. + const Gdiplus::PixelOffsetMode aOldMode( + pGraphics->GetPixelOffsetMode() ); + pGraphics->SetPixelOffsetMode( Gdiplus::PixelOffsetModeNone ); + + Gdiplus::Status hr = pGraphics->DrawLine( &aPen, + Gdiplus::REAL(aStartPoint.X), // disambiguate call + Gdiplus::REAL(aStartPoint.Y), + Gdiplus::REAL(aEndPoint.X), + Gdiplus::REAL(aEndPoint.Y) ); + pGraphics->SetPixelOffsetMode( aOldMode ); + + ENSURE_OR_THROW( + Gdiplus::Ok == hr, + "CanvasHelper::drawLine(): GDI+ call failed" ); + } + } + + void CanvasHelper::drawBezier( const rendering::XCanvas* /*pCanvas*/, + const geometry::RealBezierSegment2D& aBezierSegment, + const geometry::RealPoint2D& aEndPoint, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::Pen aPen( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor)), + Gdiplus::REAL(0.0) ); + + // #122683# Switched precedence of pixel offset + // mode. Seemingly, polygon stroking needs + // PixelOffsetModeNone to achieve visually pleasing + // results, whereas all other operations (e.g. polygon + // fills, bitmaps) look better with PixelOffsetModeHalf. + const Gdiplus::PixelOffsetMode aOldMode( + pGraphics->GetPixelOffsetMode() ); + pGraphics->SetPixelOffsetMode( Gdiplus::PixelOffsetModeNone ); + + Gdiplus::Status hr = pGraphics->DrawBezier( &aPen, + Gdiplus::REAL(aBezierSegment.Px), // disambiguate call + Gdiplus::REAL(aBezierSegment.Py), + Gdiplus::REAL(aBezierSegment.C1x), + Gdiplus::REAL(aBezierSegment.C1y), + Gdiplus::REAL(aEndPoint.X), + Gdiplus::REAL(aEndPoint.Y), + Gdiplus::REAL(aBezierSegment.C2x), + Gdiplus::REAL(aBezierSegment.C2y) ); + + pGraphics->SetPixelOffsetMode( aOldMode ); + + ENSURE_OR_THROW( + Gdiplus::Ok == hr, + "CanvasHelper::drawBezier(): GDI+ call failed" ); + } + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( xPolyPolygon.is(), + "CanvasHelper::drawPolyPolygon: polygon is NULL"); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::Pen aPen( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor)), + Gdiplus::REAL(0.0) ); + + // #122683# Switched precedence of pixel offset + // mode. Seemingly, polygon stroking needs + // PixelOffsetModeNone to achieve visually pleasing + // results, whereas all other operations (e.g. polygon + // fills, bitmaps) look better with PixelOffsetModeHalf. + const Gdiplus::PixelOffsetMode aOldMode( + pGraphics->GetPixelOffsetMode() ); + pGraphics->SetPixelOffsetMode( Gdiplus::PixelOffsetModeNone ); + + GraphicsPathSharedPtr pPath( tools::graphicsPathFromXPolyPolygon2D( xPolyPolygon ) ); + + // TODO(E1): Return value + Gdiplus::Status hr = pGraphics->DrawPath( &aPen, pPath.get() ); + + pGraphics->SetPixelOffsetMode( aOldMode ); + + ENSURE_OR_THROW( + Gdiplus::Ok == hr, + "CanvasHelper::drawPolyPolygon(): GDI+ call failed" ); + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokePolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + const rendering::StrokeAttributes& strokeAttributes ) + { + ENSURE_OR_THROW( xPolyPolygon.is(), + "CanvasHelper::drawPolyPolygon: polygon is NULL"); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + + // Setup stroke pen + + + Gdiplus::Pen aPen( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor)), + static_cast< Gdiplus::REAL >(strokeAttributes.StrokeWidth) ); + + // #122683# Switched precedence of pixel offset + // mode. Seemingly, polygon stroking needs + // PixelOffsetModeNone to achieve visually pleasing + // results, whereas all other operations (e.g. polygon + // fills, bitmaps) look better with PixelOffsetModeHalf. + const Gdiplus::PixelOffsetMode aOldMode( + pGraphics->GetPixelOffsetMode() ); + pGraphics->SetPixelOffsetMode( Gdiplus::PixelOffsetModeNone ); + + const bool bIsMiter(rendering::PathJoinType::MITER == strokeAttributes.JoinType); + const bool bIsNone(rendering::PathJoinType::NONE == strokeAttributes.JoinType); + + if(bIsMiter) + aPen.SetMiterLimit( static_cast< Gdiplus::REAL >(strokeAttributes.MiterLimit) ); + + const std::vector< Gdiplus::REAL >& rDashArray( + ::comphelper::sequenceToContainer< std::vector< Gdiplus::REAL >, double >( + strokeAttributes.DashArray ) ); + if( !rDashArray.empty() ) + { + aPen.SetDashPattern( rDashArray.data(), + rDashArray.size() ); + } + aPen.SetLineCap( gdiCapFromCap(strokeAttributes.StartCapType), + gdiCapFromCap(strokeAttributes.EndCapType), + Gdiplus::DashCapFlat ); + if(!bIsNone) + aPen.SetLineJoin( gdiJoinFromJoin(strokeAttributes.JoinType) ); + + GraphicsPathSharedPtr pPath( tools::graphicsPathFromXPolyPolygon2D( xPolyPolygon, bIsNone ) ); + + // TODO(E1): Return value + Gdiplus::Status hr = pGraphics->DrawPath( &aPen, pPath.get() ); + + pGraphics->SetPixelOffsetMode( aOldMode ); + + ENSURE_OR_THROW( + Gdiplus::Ok == hr, + "CanvasHelper::strokePolyPolygon(): GDI+ call failed" ); + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokeTexturedPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::strokeTextureMappedPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const uno::Reference< geometry::XMapping2D >& /*xMapping*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XPolyPolygon2D > CanvasHelper::queryStrokeShapes( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const rendering::StrokeAttributes& /*strokeAttributes*/ ) + { + // TODO + return uno::Reference< rendering::XPolyPolygon2D >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& xPolyPolygon, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( xPolyPolygon.is(), + "CanvasHelper::fillPolyPolygon: polygon is NULL"); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::SolidBrush aBrush( + tools::sequenceToArgb(renderState.DeviceColor)); + + GraphicsPathSharedPtr pPath( tools::graphicsPathFromXPolyPolygon2D( xPolyPolygon ) ); + + // TODO(F1): FillRule + ENSURE_OR_THROW( Gdiplus::Ok == pGraphics->FillPath( &aBrush, pPath.get() ), + "CanvasHelper::fillPolyPolygon(): GDI+ call failed " ); + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::fillTextureMappedPolyPolygon( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XPolyPolygon2D >& /*xPolyPolygon*/, + const rendering::ViewState& /*viewState*/, + const rendering::RenderState& /*renderState*/, + const uno::Sequence< rendering::Texture >& /*textures*/, + const uno::Reference< geometry::XMapping2D >& /*xMapping*/ ) + { + // TODO + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCanvasFont > CanvasHelper::createFont( const rendering::XCanvas* /*pCanvas*/, + const rendering::FontRequest& fontRequest, + const uno::Sequence< beans::PropertyValue >& extraFontProperties, + const geometry::Matrix2D& fontMatrix ) + { + if( needOutput() ) + { + return uno::Reference< rendering::XCanvasFont >( + new CanvasFont(fontRequest, extraFontProperties, fontMatrix ) ); + } + + return uno::Reference< rendering::XCanvasFont >(); + } + + uno::Sequence< rendering::FontInfo > CanvasHelper::queryAvailableFonts( const rendering::XCanvas* /*pCanvas*/, + const rendering::FontInfo& /*aFilter*/, + const uno::Sequence< beans::PropertyValue >& /*aFontProperties*/ ) + { + // TODO + return uno::Sequence< rendering::FontInfo >(); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawText( const rendering::XCanvas* /*pCanvas*/, + const rendering::StringContext& text, + const uno::Reference< rendering::XCanvasFont >& xFont, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState, + sal_Int8 /*textDirection*/ ) + { + ENSURE_OR_THROW( xFont.is(), + "CanvasHelper::drawText: font is NULL"); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + Gdiplus::SolidBrush aBrush( + Gdiplus::Color( + tools::sequenceToArgb(renderState.DeviceColor))); + + CanvasFont::ImplRef pFont( + tools::canvasFontFromXFont(xFont) ); + + // Move glyphs up, such that output happens at the font + // baseline. + Gdiplus::PointF aPoint( 0.0, + static_cast<Gdiplus::REAL>(-(pFont->getFont()->GetSize()* + pFont->getCellAscent() / + pFont->getEmHeight())) ); + + // TODO(F1): According to + // http://support.microsoft.com/default.aspx?scid=kb;EN-US;Q307208, + // we might have to revert to GDI and ExTextOut here, + // since GDI+ takes the scalability a little bit too + // far... + + // TODO(F2): Proper layout (BiDi, CTL)! IMHO must use + // DrawDriverString here, and perform layouting myself... + ENSURE_OR_THROW( + Gdiplus::Ok == pGraphics->DrawString( o3tl::toW(text.Text.copy( text.StartPosition, + text.Length ).getStr()), + text.Length, + pFont->getFont().get(), + aPoint, + &aBrush ), + "CanvasHelper::drawText(): GDI+ call failed" ); + } + + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawTextLayout( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XTextLayout >& xLayoutetText, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( xLayoutetText.is(), + "CanvasHelper::drawTextLayout: layout is NULL"); + + if( needOutput() ) + { + TextLayout* pTextLayout = + dynamic_cast< TextLayout* >( xLayoutetText.get() ); + + ENSURE_OR_THROW( pTextLayout, + "CanvasHelper::drawTextLayout(): TextLayout not compatible with this canvas" ); + + pTextLayout->draw( mpGraphicsProvider->getGraphics(), + viewState, + renderState, + maOutputOffset, + mpDevice, + false ); + } + + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmap( const rendering::XCanvas* /*pCanvas*/, + const uno::Reference< rendering::XBitmap >& xBitmap, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( xBitmap.is(), + "CanvasHelper::drawBitmap: bitmap is NULL"); + + if( needOutput() ) + { + // check whether one of our own objects - need to retrieve + // bitmap _before_ calling + // GraphicsProvider::getGraphics(), to avoid locking our + // own surface. + BitmapSharedPtr pGdiBitmap; + BitmapProvider* pBitmap = dynamic_cast< BitmapProvider* >(xBitmap.get()); + if( pBitmap ) + { + IBitmapSharedPtr pDXBitmap( pBitmap->getBitmap() ); + if( pDXBitmap ) + pGdiBitmap = pDXBitmap->getBitmap(); + } + + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + setupGraphicsState( pGraphics, viewState, renderState ); + + if( pGdiBitmap ) + tools::drawGdiPlusBitmap(pGraphics,pGdiBitmap); + else + tools::drawVCLBitmapFromXBitmap(pGraphics, + xBitmap); + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XCachedPrimitive > CanvasHelper::drawBitmapModulated( const rendering::XCanvas* pCanvas, + const uno::Reference< rendering::XBitmap >& xBitmap, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( xBitmap.is(), + "CanvasHelper::drawBitmap: bitmap is NULL"); + + // no color set -> this is equivalent to a plain drawBitmap(), then + if( renderState.DeviceColor.getLength() < 3 ) + return drawBitmap( pCanvas, xBitmap, viewState, renderState ); + + if( needOutput() ) + { + GraphicsSharedPtr pGraphics( mpGraphicsProvider->getGraphics() ); + + setupGraphicsState( pGraphics, viewState, renderState ); + + BitmapSharedPtr pBitmap( tools::bitmapFromXBitmap( xBitmap ) ); + Gdiplus::Rect aRect( 0, 0, + pBitmap->GetWidth(), + pBitmap->GetHeight() ); + + // Setup an ImageAttributes with an alpha-modulating + // color matrix. + rendering::ARGBColor aARGBColor( + mpDevice->getDeviceColorSpace()->convertToARGB(renderState.DeviceColor)[0]); + + Gdiplus::ImageAttributes aImgAttr; + tools::setModulateImageAttributes( aImgAttr, + aARGBColor.Red, + aARGBColor.Green, + aARGBColor.Blue, + aARGBColor.Alpha ); + + ENSURE_OR_THROW( + Gdiplus::Ok == pGraphics->DrawImage( pBitmap.get(), + aRect, + 0, 0, + pBitmap->GetWidth(), + pBitmap->GetHeight(), + Gdiplus::UnitPixel, + &aImgAttr ), + "CanvasHelper::drawBitmapModulated(): GDI+ call failed" ); + } + + // TODO(P1): Provide caching here. + return uno::Reference< rendering::XCachedPrimitive >(nullptr); + } + + uno::Reference< rendering::XGraphicDevice > CanvasHelper::getDevice() + { + return uno::Reference< rendering::XGraphicDevice >(mpDevice); + } + + // private helper + + + Gdiplus::CompositingMode CanvasHelper::calcCompositingMode( sal_Int8 nMode ) + { + Gdiplus::CompositingMode aRet( Gdiplus::CompositingModeSourceOver ); + + switch( nMode ) + { + case rendering::CompositeOperation::OVER: + case rendering::CompositeOperation::CLEAR: + aRet = Gdiplus::CompositingModeSourceOver; + break; + + case rendering::CompositeOperation::SOURCE: + aRet = Gdiplus::CompositingModeSourceCopy; + break; + + case rendering::CompositeOperation::DESTINATION: + case rendering::CompositeOperation::UNDER: + case rendering::CompositeOperation::INSIDE: + case rendering::CompositeOperation::INSIDE_REVERSE: + case rendering::CompositeOperation::OUTSIDE: + case rendering::CompositeOperation::OUTSIDE_REVERSE: + case rendering::CompositeOperation::ATOP: + case rendering::CompositeOperation::ATOP_REVERSE: + case rendering::CompositeOperation::XOR: + case rendering::CompositeOperation::ADD: + case rendering::CompositeOperation::SATURATE: + // TODO(F2): Problem, because GDI+ only knows about two compositing modes + aRet = Gdiplus::CompositingModeSourceOver; + break; + + default: + ENSURE_OR_THROW( false, "CanvasHelper::calcCompositingMode: unexpected mode" ); + break; + } + + return aRet; + } + + void CanvasHelper::setupGraphicsState( GraphicsSharedPtr const & rGraphics, + const rendering::ViewState& viewState, + const rendering::RenderState& renderState ) + { + ENSURE_OR_THROW( needOutput(), + "CanvasHelper::setupGraphicsState: primary graphics invalid" ); + ENSURE_OR_THROW( mpDevice, + "CanvasHelper::setupGraphicsState: reference device invalid" ); + + // setup view transform first. Clipping e.g. depends on it + ::basegfx::B2DHomMatrix aTransform; + ::canvas::tools::getViewStateTransform(aTransform, viewState); + + // add output offset + if( !maOutputOffset.equalZero() ) + { + const basegfx::B2DHomMatrix aOutputOffset(basegfx::utils::createTranslateB2DHomMatrix( + maOutputOffset.getX(), maOutputOffset.getY())); + aTransform = aOutputOffset * aTransform; + } + + Gdiplus::Matrix aMatrix; + tools::gdiPlusMatrixFromB2DHomMatrix( aMatrix, aTransform ); + + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->SetTransform( &aMatrix ), + "CanvasHelper::setupGraphicsState(): Failed to set GDI+ transformation" ); + + // setup view and render state clipping + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->ResetClip(), + "CanvasHelper::setupGraphicsState(): Failed to reset GDI+ clip" ); + + if( viewState.Clip.is() ) + { + GraphicsPathSharedPtr aClipPath( tools::graphicsPathFromXPolyPolygon2D( viewState.Clip ) ); + + // TODO(P3): Cache clip. SetClip( GraphicsPath ) performs abyssmally on GDI+. + // Try SetClip( Rect ) or similar for simple clip paths (need some support in + // LinePolyPolygon, then) + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->SetClip( aClipPath.get(), + Gdiplus::CombineModeIntersect ), + "CanvasHelper::setupGraphicsState(): Cannot set GDI+ clip" ); + } + + // setup overall transform only now. View clip above was relative to + // view transform + ::canvas::tools::mergeViewAndRenderTransform(aTransform, + viewState, + renderState); + + // add output offset + if( !maOutputOffset.equalZero() ) + { + const basegfx::B2DHomMatrix aOutputOffset(basegfx::utils::createTranslateB2DHomMatrix( + maOutputOffset.getX(), maOutputOffset.getY())); + aTransform = aOutputOffset * aTransform; + } + + tools::gdiPlusMatrixFromB2DHomMatrix( aMatrix, aTransform ); + + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->SetTransform( &aMatrix ), + "CanvasHelper::setupGraphicsState(): Cannot set GDI+ transformation" ); + + if( renderState.Clip.is() ) + { + GraphicsPathSharedPtr aClipPath( tools::graphicsPathFromXPolyPolygon2D( renderState.Clip ) ); + + // TODO(P3): Cache clip. SetClip( GraphicsPath ) performs abyssmally on GDI+. + // Try SetClip( Rect ) or similar for simple clip paths (need some support in + // LinePolyPolygon, then) + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->SetClip( aClipPath.get(), + Gdiplus::CombineModeIntersect ), + "CanvasHelper::setupGraphicsState(): Cannot set GDI+ clip" ); + } + + // setup compositing + const Gdiplus::CompositingMode eCompositing( calcCompositingMode( renderState.CompositeOperation ) ); + ENSURE_OR_THROW( + Gdiplus::Ok == rGraphics->SetCompositingMode( eCompositing ), + "CanvasHelper::setupGraphicsState(): Cannot set GDI* compositing mode)" ); + } + + void CanvasHelper::flush() const + { + if( needOutput() ) + mpGraphicsProvider->getGraphics()->Flush( Gdiplus::FlushIntentionSync ); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |