/* -*- 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::Color(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[0],
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.
const rendering::ARGBColor& rARGBColor(
mpDevice->getDeviceColorSpace()->convertToARGB(renderState.DeviceColor)[0]);
Gdiplus::ImageAttributes aImgAttr;
tools::setModulateImageAttributes( aImgAttr,
rARGBColor.Red,
rARGBColor.Green,
rARGBColor.Blue,
rARGBColor.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:
// FALLTHROUGH intended
case rendering::CompositeOperation::CLEAR:
aRet = Gdiplus::CompositingModeSourceOver;
break;
case rendering::CompositeOperation::SOURCE:
aRet = Gdiplus::CompositingModeSourceCopy;
break;
case rendering::CompositeOperation::DESTINATION:
// FALLTHROUGH intended
case rendering::CompositeOperation::UNDER:
// FALLTHROUGH intended
case rendering::CompositeOperation::INSIDE:
// FALLTHROUGH intended
case rendering::CompositeOperation::INSIDE_REVERSE:
// FALLTHROUGH intended
case rendering::CompositeOperation::OUTSIDE:
// FALLTHROUGH intended
case rendering::CompositeOperation::OUTSIDE_REVERSE:
// FALLTHROUGH intended
case rendering::CompositeOperation::ATOP:
// FALLTHROUGH intended
case rendering::CompositeOperation::ATOP_REVERSE:
// FALLTHROUGH intended
case rendering::CompositeOperation::XOR:
// FALLTHROUGH intended
case rendering::CompositeOperation::ADD:
// FALLTHROUGH intended
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: */
↑ V758 The 'rARGBColor' reference becomes invalid when temporary object returned by a function is destroyed.