264 lines
11 KiB
C++
264 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/numeric/ftools.hxx>
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#include <basegfx/point/b2dpoint.hxx>
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#include <basegfx/polygon/b2dpolygontools.hxx>
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#include <basegfx/range/b2drectangle.hxx>
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#include <basegfx/utils/canvastools.hxx>
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#include <basegfx/tuple/b2dtuple.hxx>
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#include <rtl/math.hxx>
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#include <comphelper/diagnose_ex.hxx>
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#include <sal/log.hxx>
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#include <vcl/bitmapex.hxx>
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#include <vcl/canvastools.hxx>
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#include <vcl/BitmapTools.hxx>
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#include <vcl/metric.hxx>
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#include <vcl/skia/SkiaHelper.hxx>
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#include <canvas/canvastools.hxx>
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#include "canvasbitmap.hxx"
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#include "impltools.hxx"
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#include "spritecanvas.hxx"
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using namespace ::com::sun::star;
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namespace vclcanvas::tools
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{
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::BitmapEx bitmapExFromXBitmap( const uno::Reference< rendering::XBitmap >& xBitmap )
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{
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// TODO(F3): CanvasCustomSprite should also be tunnelled
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// through (also implements XIntegerBitmap interface)
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CanvasBitmap* pBitmapImpl = dynamic_cast< CanvasBitmap* >( xBitmap.get() );
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if( pBitmapImpl )
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{
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return pBitmapImpl->getBitmap();
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}
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else
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{
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SpriteCanvas* pCanvasImpl = dynamic_cast< SpriteCanvas* >( xBitmap.get() );
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if( pCanvasImpl && pCanvasImpl->getBackBuffer() )
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{
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// TODO(F3): mind the plain Canvas impl. Consolidate with CWS canvas05
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const ::OutputDevice& rDev( pCanvasImpl->getBackBuffer()->getOutDev() );
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const ::Point aEmptyPoint;
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return rDev.GetBitmapEx( aEmptyPoint,
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rDev.GetOutputSizePixel() );
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}
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// TODO(F2): add support for floating point bitmap formats
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uno::Reference< rendering::XIntegerReadOnlyBitmap > xIntBmp(
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xBitmap, uno::UNO_QUERY_THROW );
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::BitmapEx aBmpEx = vcl::unotools::bitmapExFromXBitmap( xIntBmp );
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if( !aBmpEx.IsEmpty() )
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return aBmpEx;
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// TODO(F1): extract pixel from XBitmap interface
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ENSURE_OR_THROW( false,
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"bitmapExFromXBitmap(): could not extract bitmap" );
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}
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return ::BitmapEx();
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}
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bool setupFontTransform( ::Point& o_rPoint,
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vcl::Font& io_rVCLFont,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState,
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::OutputDevice const & rOutDev )
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{
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::basegfx::B2DHomMatrix aMatrix;
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::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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::basegfx::B2DTuple aScale;
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::basegfx::B2DTuple aTranslate;
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double nRotate, nShearX;
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aMatrix.decompose( aScale, aTranslate, nRotate, nShearX );
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// query font metric _before_ tampering with width and height
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if( !::rtl::math::approxEqual(aScale.getX(), aScale.getY()) )
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{
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// retrieve true font width
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const sal_Int32 nFontWidth( rOutDev.GetFontMetric( io_rVCLFont ).GetAverageFontWidth() );
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const sal_Int32 nScaledFontWidth( ::basegfx::fround(nFontWidth * aScale.getX()) );
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if( !nScaledFontWidth )
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{
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// scale is smaller than one pixel - disable text
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// output altogether
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return false;
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}
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io_rVCLFont.SetAverageFontWidth( nScaledFontWidth );
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}
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if( !::rtl::math::approxEqual(aScale.getY(), 1.0) )
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{
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const sal_Int32 nFontHeight( io_rVCLFont.GetFontHeight() );
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io_rVCLFont.SetFontHeight( ::basegfx::fround<::tools::Long>(nFontHeight * aScale.getY()) );
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}
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io_rVCLFont.SetOrientation( Degree10( ::basegfx::fround(-basegfx::rad2deg<10>(fmod(nRotate, 2*M_PI))) ) );
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// TODO(F2): Missing functionality in VCL: shearing
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o_rPoint.setX( ::basegfx::fround<::tools::Long>(aTranslate.getX()) );
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o_rPoint.setY( ::basegfx::fround<::tools::Long>(aTranslate.getY()) );
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return true;
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}
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void setupFontWidth(const css::geometry::Matrix2D& rFontMatrix,
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vcl::Font& rFont,
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OutputDevice& rOutDev)
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{
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rFont.SetFontSize(Size(0, rFont.GetFontHeight()));
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if (!::rtl::math::approxEqual(rFontMatrix.m00, rFontMatrix.m11))
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{
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const bool bOldMapState(rOutDev.IsMapModeEnabled());
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rOutDev.EnableMapMode(false);
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const Size aSize = rOutDev.GetFontMetric(rFont).GetFontSize();
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const double fDividend(rFontMatrix.m10 + rFontMatrix.m11);
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double fStretch = rFontMatrix.m00 + rFontMatrix.m01;
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if (!::basegfx::fTools::equalZero(fDividend))
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fStretch /= fDividend;
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const ::tools::Long nNewWidth = ::basegfx::fround<::tools::Long>(aSize.Width() * fStretch);
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rFont.SetAverageFontWidth(nNewWidth);
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rOutDev.EnableMapMode(bOldMapState);
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}
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}
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bool isRectangle( const ::tools::PolyPolygon& rPolyPoly )
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{
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// exclude some cheap cases first
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if( rPolyPoly.Count() != 1 )
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return false;
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const ::tools::Polygon& rPoly( rPolyPoly[0] );
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sal_uInt16 nCount( rPoly.GetSize() );
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if( nCount < 4 )
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return false;
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// delegate to basegfx
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return ::basegfx::utils::isRectangle( rPoly.getB2DPolygon() );
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}
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// VCL-Canvas related
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::Point mapRealPoint2D( const geometry::RealPoint2D& rPoint,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState )
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{
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::basegfx::B2DPoint aPoint( ::basegfx::unotools::b2DPointFromRealPoint2D(rPoint) );
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::basegfx::B2DHomMatrix aMatrix;
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aPoint *= ::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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return vcl::unotools::pointFromB2DPoint( aPoint );
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}
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::tools::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon& rPoly,
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const rendering::ViewState& rViewState,
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const rendering::RenderState& rRenderState )
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{
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::basegfx::B2DHomMatrix aMatrix;
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::canvas::tools::mergeViewAndRenderTransform(aMatrix,
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rViewState,
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rRenderState);
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::basegfx::B2DPolyPolygon aTemp( rPoly );
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aTemp.transform( aMatrix );
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return ::tools::PolyPolygon( aTemp );
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}
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::BitmapEx transformBitmap( const BitmapEx& rBitmap,
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const ::basegfx::B2DHomMatrix& rTransform )
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{
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SAL_INFO( "canvas.vcl", "::vclcanvas::tools::transformBitmap()" );
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SAL_INFO( "canvas.vcl", "::vclcanvas::tools::transformBitmap: 0x" << std::hex << &rBitmap );
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// calc transformation and size of bitmap to be
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// generated. Note, that the translational components are
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// deleted from the transformation; this can be handled by
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// an offset when painting the bitmap
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const Size aBmpSize( rBitmap.GetSizePixel() );
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// calc effective transformation for bitmap
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const ::basegfx::B2DRectangle aSrcRect( 0, 0,
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aBmpSize.Width(),
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aBmpSize.Height() );
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::basegfx::B2DRectangle aDestRect = ::canvas::tools::calcTransformedRectBounds(
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aSrcRect,
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rTransform );
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// re-center bitmap, such that it's left, top border is
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// aligned with (0,0). The method takes the given
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// rectangle, and calculates a transformation that maps
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// this rectangle unscaled to the origin.
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::basegfx::B2DHomMatrix aLocalTransform = ::canvas::tools::calcRectToOriginTransform(
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aSrcRect,
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rTransform );
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return vcl::bitmap::CanvasTransformBitmap(rBitmap, rTransform, aDestRect, aLocalTransform);
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}
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void SetDefaultDeviceAntiAliasing( OutputDevice* pDevice )
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{
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#if defined( MACOSX )
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// use AA on VCLCanvas for Mac
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pDevice->SetAntialiasing( AntialiasingFlags::Enable | pDevice->GetAntialiasing() );
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#else
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// switch off AA for WIN32 and UNIX, the VCLCanvas does not look good with it and
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// is not required to do AA. It would need to be adapted to use it correctly
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// (especially gradient painting). This will need extra work.
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if( SkiaHelper::isVCLSkiaEnabled()) // But Skia handles AA fine.
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pDevice->SetAntialiasing( AntialiasingFlags::Enable | pDevice->GetAntialiasing() );
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else
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pDevice->SetAntialiasing(pDevice->GetAntialiasing() & ~AntialiasingFlags::Enable);
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#endif
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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