993 lines
36 KiB
C++
993 lines
36 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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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 <config_features.h>
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#include <osl/diagnose.h>
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#include <tools/debug.hxx>
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#include <tools/helpers.hxx>
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#include <vcl/image.hxx>
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#include <vcl/metaact.hxx>
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#include <vcl/skia/SkiaHelper.hxx>
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#include <vcl/virdev.hxx>
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#include <vcl/BitmapWriteAccess.hxx>
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#include <bitmap/bmpfast.hxx>
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#include <drawmode.hxx>
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#include <salbmp.hxx>
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#include <salgdi.hxx>
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void OutputDevice::DrawBitmap( const Point& rDestPt, const Bitmap& rBitmap )
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{
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assert(!is_double_buffered_window());
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const Size aSizePix( rBitmap.GetSizePixel() );
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DrawBitmap( rDestPt, PixelToLogic( aSizePix ), Point(), aSizePix, rBitmap, MetaActionType::BMP );
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}
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void OutputDevice::DrawBitmap( const Point& rDestPt, const Size& rDestSize, const Bitmap& rBitmap )
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{
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assert(!is_double_buffered_window());
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DrawBitmap( rDestPt, rDestSize, Point(), rBitmap.GetSizePixel(), rBitmap, MetaActionType::BMPSCALE );
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}
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void OutputDevice::DrawBitmap( const Point& rDestPt, const Size& rDestSize,
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const Point& rSrcPtPixel, const Size& rSrcSizePixel,
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const Bitmap& rBitmap)
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{
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assert(!is_double_buffered_window());
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DrawBitmap( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, rBitmap, MetaActionType::BMPSCALEPART );
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}
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void OutputDevice::DrawBitmap( const Point& rDestPt, const Size& rDestSize,
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const Point& rSrcPtPixel, const Size& rSrcSizePixel,
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const Bitmap& rBitmap, const MetaActionType nAction )
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{
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assert(!is_double_buffered_window());
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if( ImplIsRecordLayout() )
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return;
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if ( RasterOp::Invert == meRasterOp )
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{
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DrawRect( tools::Rectangle( rDestPt, rDestSize ) );
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return;
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}
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Bitmap aBmp( rBitmap );
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if ( mnDrawMode & ( DrawModeFlags::BlackBitmap | DrawModeFlags::WhiteBitmap |
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DrawModeFlags::GrayBitmap ) )
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{
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if ( mnDrawMode & ( DrawModeFlags::BlackBitmap | DrawModeFlags::WhiteBitmap ) )
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{
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sal_uInt8 cCmpVal;
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if ( mnDrawMode & DrawModeFlags::BlackBitmap )
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cCmpVal = 0;
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else
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cCmpVal = 255;
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Color aCol( cCmpVal, cCmpVal, cCmpVal );
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Push( vcl::PushFlags::LINECOLOR | vcl::PushFlags::FILLCOLOR );
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SetLineColor( aCol );
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SetFillColor( aCol );
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DrawRect( tools::Rectangle( rDestPt, rDestSize ) );
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Pop();
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return;
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}
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else if( !aBmp.IsEmpty() )
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{
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if ( mnDrawMode & DrawModeFlags::GrayBitmap )
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aBmp.Convert( BmpConversion::N8BitGreys );
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}
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}
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if ( mpMetaFile )
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{
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switch( nAction )
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{
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case MetaActionType::BMP:
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mpMetaFile->AddAction( new MetaBmpAction( rDestPt, aBmp ) );
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break;
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case MetaActionType::BMPSCALE:
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mpMetaFile->AddAction( new MetaBmpScaleAction( rDestPt, rDestSize, aBmp ) );
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break;
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case MetaActionType::BMPSCALEPART:
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mpMetaFile->AddAction( new MetaBmpScalePartAction(
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rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, aBmp ) );
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break;
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default: break;
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}
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}
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if ( !IsDeviceOutputNecessary() )
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return;
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if (!mpGraphics && !AcquireGraphics())
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return;
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assert(mpGraphics);
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if ( mbInitClipRegion )
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InitClipRegion();
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if ( mbOutputClipped )
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return;
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if( !aBmp.IsEmpty() )
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{
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SalTwoRect aPosAry(rSrcPtPixel.X(), rSrcPtPixel.Y(), rSrcSizePixel.Width(), rSrcSizePixel.Height(),
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ImplLogicXToDevicePixel(rDestPt.X()), ImplLogicYToDevicePixel(rDestPt.Y()),
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ImplLogicWidthToDevicePixel(rDestSize.Width()),
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ImplLogicHeightToDevicePixel(rDestSize.Height()));
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if ( aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight )
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{
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const BmpMirrorFlags nMirrFlags = AdjustTwoRect( aPosAry, aBmp.GetSizePixel() );
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if ( nMirrFlags != BmpMirrorFlags::NONE )
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aBmp.Mirror( nMirrFlags );
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if ( aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight )
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{
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if (nAction == MetaActionType::BMPSCALE && CanSubsampleBitmap())
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{
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double nScaleX = aPosAry.mnDestWidth / static_cast<double>(aPosAry.mnSrcWidth);
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double nScaleY = aPosAry.mnDestHeight / static_cast<double>(aPosAry.mnSrcHeight);
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// If subsampling, use Bitmap::Scale() for subsampling of better quality.
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// but hidpi surfaces like the cairo one have their own scale, so don't downscale
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// past the surface scaling which can retain the extra detail
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double fScale(1.0);
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if (mpGraphics->ShouldDownscaleIconsAtSurface(fScale))
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{
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nScaleX *= fScale;
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nScaleY *= fScale;
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}
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if ( nScaleX < 1.0 || nScaleY < 1.0 )
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{
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aBmp.Scale(nScaleX, nScaleY);
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aPosAry.mnSrcWidth = aPosAry.mnDestWidth * fScale;
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aPosAry.mnSrcHeight = aPosAry.mnDestHeight * fScale;
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}
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}
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mpGraphics->DrawBitmap( aPosAry, *aBmp.ImplGetSalBitmap(), *this );
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}
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}
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}
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if( mpAlphaVDev )
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{
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// #i32109#: Make bitmap area opaque
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mpAlphaVDev->ImplFillOpaqueRectangle( tools::Rectangle(rDestPt, rDestSize) );
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}
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}
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Bitmap OutputDevice::GetBitmap( const Point& rSrcPt, const Size& rSize ) const
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{
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if ( !mpGraphics && !AcquireGraphics() )
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return Bitmap();
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assert(mpGraphics);
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tools::Long nX = ImplLogicXToDevicePixel( rSrcPt.X() );
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tools::Long nY = ImplLogicYToDevicePixel( rSrcPt.Y() );
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tools::Long nWidth = ImplLogicWidthToDevicePixel( rSize.Width() );
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tools::Long nHeight = ImplLogicHeightToDevicePixel( rSize.Height() );
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if ( nWidth <= 0 || nHeight <= 0 || nX > (mnOutWidth + mnOutOffX) || nY > (mnOutHeight + mnOutOffY))
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return Bitmap();
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Bitmap aBmp;
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tools::Rectangle aRect( Point( nX, nY ), Size( nWidth, nHeight ) );
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bool bClipped = false;
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// X-Coordinate outside of draw area?
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if ( nX < mnOutOffX )
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{
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nWidth -= ( mnOutOffX - nX );
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nX = mnOutOffX;
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bClipped = true;
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}
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// Y-Coordinate outside of draw area?
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if ( nY < mnOutOffY )
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{
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nHeight -= ( mnOutOffY - nY );
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nY = mnOutOffY;
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bClipped = true;
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}
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// Width outside of draw area?
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if ( (nWidth + nX) > (mnOutWidth + mnOutOffX) )
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{
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nWidth = mnOutOffX + mnOutWidth - nX;
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bClipped = true;
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}
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// Height outside of draw area?
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if ( (nHeight + nY) > (mnOutHeight + mnOutOffY) )
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{
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nHeight = mnOutOffY + mnOutHeight - nY;
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bClipped = true;
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}
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if ( bClipped )
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{
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// If the visible part has been clipped, we have to create a
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// Bitmap with the correct size in which we copy the clipped
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// Bitmap to the correct position.
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ScopedVclPtrInstance< VirtualDevice > aVDev( *this );
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if ( aVDev->SetOutputSizePixel( aRect.GetSize() ) )
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{
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if ( aVDev->mpGraphics || aVDev->AcquireGraphics() )
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{
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if ( (nWidth > 0) && (nHeight > 0) )
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{
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SalTwoRect aPosAry(nX, nY, nWidth, nHeight,
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(aRect.Left() < mnOutOffX) ? (mnOutOffX - aRect.Left()) : 0L,
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(aRect.Top() < mnOutOffY) ? (mnOutOffY - aRect.Top()) : 0L,
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nWidth, nHeight);
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aVDev->mpGraphics->CopyBits(aPosAry, *mpGraphics, *this, *this);
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}
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else
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{
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OSL_ENSURE(false, "CopyBits with zero or negative width or height");
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}
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aBmp = aVDev->GetBitmap( Point(), aVDev->GetOutputSizePixel() );
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}
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else
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bClipped = false;
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}
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else
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bClipped = false;
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}
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if ( !bClipped )
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{
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std::shared_ptr<SalBitmap> pSalBmp = mpGraphics->GetBitmap( nX, nY, nWidth, nHeight, *this );
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if( pSalBmp )
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{
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aBmp.ImplSetSalBitmap(pSalBmp);
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}
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}
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return aBmp;
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}
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void OutputDevice::DrawDeviceAlphaBitmap( const Bitmap& rBmp, const AlphaMask& rAlpha,
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const Point& rDestPt, const Size& rDestSize,
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const Point& rSrcPtPixel, const Size& rSrcSizePixel )
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{
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assert(!is_double_buffered_window());
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Point aOutPt(LogicToPixel(rDestPt));
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Size aOutSz(LogicToPixel(rDestSize));
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tools::Rectangle aDstRect(Point(), GetOutputSizePixel());
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const bool bHMirr = aOutSz.Width() < 0;
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const bool bVMirr = aOutSz.Height() < 0;
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ClipToPaintRegion(aDstRect);
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BmpMirrorFlags mirrorFlags = BmpMirrorFlags::NONE;
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if (bHMirr)
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{
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aOutSz.setWidth( -aOutSz.Width() );
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aOutPt.AdjustX( -(aOutSz.Width() - 1) );
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mirrorFlags |= BmpMirrorFlags::Horizontal;
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}
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if (bVMirr)
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{
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aOutSz.setHeight( -aOutSz.Height() );
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aOutPt.AdjustY( -(aOutSz.Height() - 1) );
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mirrorFlags |= BmpMirrorFlags::Vertical;
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}
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if (aDstRect.Intersection(tools::Rectangle(aOutPt, aOutSz)).IsEmpty())
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return;
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{
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Point aRelPt = aOutPt + Point(mnOutOffX, mnOutOffY);
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SalTwoRect aTR(
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rSrcPtPixel.X(), rSrcPtPixel.Y(),
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rSrcSizePixel.Width(), rSrcSizePixel.Height(),
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aRelPt.X(), aRelPt.Y(),
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aOutSz.Width(), aOutSz.Height());
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Bitmap bitmap(rBmp);
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AlphaMask alpha(rAlpha);
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if(bHMirr || bVMirr)
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{
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bitmap.Mirror(mirrorFlags);
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alpha.Mirror(mirrorFlags);
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}
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SalBitmap* pSalSrcBmp = bitmap.ImplGetSalBitmap().get();
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SalBitmap* pSalAlphaBmp = alpha.GetBitmap().ImplGetSalBitmap().get();
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// #i83087# Naturally, system alpha blending (SalGraphics::DrawAlphaBitmap) cannot work
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// with separate alpha VDev
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// try to blend the alpha bitmap with the alpha virtual device
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if (mpAlphaVDev)
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{
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if (ImplLogicToDevicePixel(aOutSz).IsEmpty()) // nothing to draw
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return;
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Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( aRelPt, aOutSz ) );
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if (SalBitmap* pSalAlphaBmp2 = aAlphaBitmap.ImplGetSalBitmap().get())
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{
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if (mpGraphics->BlendAlphaBitmap(aTR, *pSalSrcBmp, *pSalAlphaBmp, *pSalAlphaBmp2, *this))
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{
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mpAlphaVDev->BlendBitmap(aTR, rAlpha.GetBitmap());
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return;
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}
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}
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}
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else
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{
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if (mpGraphics->DrawAlphaBitmap(aTR, *pSalSrcBmp, *pSalAlphaBmp, *this))
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return;
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}
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// we need to make sure Skia never reaches this slow code path
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// (but do not fail in no-op cases)
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assert(!SkiaHelper::isVCLSkiaEnabled() || !SkiaHelper::isAlphaMaskBlendingEnabled()
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|| tools::Rectangle(Point(), rBmp.GetSizePixel())
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.Intersection(tools::Rectangle(rSrcPtPixel, rSrcSizePixel)).IsEmpty()
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|| mpAlphaVDev->LogicToPixel(mpAlphaVDev->GetOutputSizePixel()).IsEmpty());
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}
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tools::Rectangle aBmpRect(Point(), rBmp.GetSizePixel());
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if (aBmpRect.Intersection(tools::Rectangle(rSrcPtPixel, rSrcSizePixel)).IsEmpty())
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return;
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Point auxOutPt(LogicToPixel(rDestPt));
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Size auxOutSz(LogicToPixel(rDestSize));
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// HACK: The function is broken with alpha vdev and mirroring, mirror here.
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Bitmap bitmap(rBmp);
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AlphaMask alpha(rAlpha);
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if(mpAlphaVDev && (bHMirr || bVMirr))
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{
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bitmap.Mirror(mirrorFlags);
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alpha.Mirror(mirrorFlags);
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auxOutPt = aOutPt;
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auxOutSz = aOutSz;
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}
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DrawDeviceAlphaBitmapSlowPath(bitmap, alpha, aDstRect, aBmpRect, auxOutSz, auxOutPt);
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}
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namespace
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{
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struct LinearScaleContext
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{
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std::unique_ptr<sal_Int32[]> mpMapX;
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std::unique_ptr<sal_Int32[]> mpMapY;
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std::unique_ptr<sal_Int32[]> mpMapXOffset;
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std::unique_ptr<sal_Int32[]> mpMapYOffset;
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LinearScaleContext(tools::Rectangle const & aDstRect, tools::Rectangle const & aBitmapRect,
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Size const & aOutSize, tools::Long nOffX, tools::Long nOffY)
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: mpMapX(new sal_Int32[aDstRect.GetWidth()])
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, mpMapY(new sal_Int32[aDstRect.GetHeight()])
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, mpMapXOffset(new sal_Int32[aDstRect.GetWidth()])
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, mpMapYOffset(new sal_Int32[aDstRect.GetHeight()])
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{
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const tools::Long nSrcWidth = aBitmapRect.GetWidth();
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const tools::Long nSrcHeight = aBitmapRect.GetHeight();
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generateSimpleMap(
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nSrcWidth, aDstRect.GetWidth(), aBitmapRect.Left(),
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aOutSize.Width(), nOffX, mpMapX.get(), mpMapXOffset.get());
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generateSimpleMap(
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nSrcHeight, aDstRect.GetHeight(), aBitmapRect.Top(),
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aOutSize.Height(), nOffY, mpMapY.get(), mpMapYOffset.get());
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}
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private:
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static void generateSimpleMap(tools::Long nSrcDimension, tools::Long nDstDimension, tools::Long nDstLocation,
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tools::Long nOutDimension, tools::Long nOffset, sal_Int32* pMap, sal_Int32* pMapOffset)
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{
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const double fReverseScale = (std::abs(nOutDimension) > 1) ? (nSrcDimension - 1) / double(std::abs(nOutDimension) - 1) : 0.0;
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tools::Long nSampleRange = std::max(tools::Long(0), nSrcDimension - 2);
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for (tools::Long i = 0; i < nDstDimension; i++)
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{
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double fTemp = std::abs((nOffset + i) * fReverseScale);
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pMap[i] = std::clamp(nDstLocation + tools::Long(fTemp), tools::Long(0), nSampleRange);
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pMapOffset[i] = static_cast<tools::Long>((fTemp - pMap[i]) * 128.0);
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}
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}
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public:
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bool blendBitmap(
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const BitmapWriteAccess* pDestination,
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const BitmapReadAccess* pSource,
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const BitmapReadAccess* pSourceAlpha,
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const tools::Long nDstWidth,
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const tools::Long nDstHeight)
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{
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if (!pSource || !pSourceAlpha || !pDestination)
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return false;
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ScanlineFormat nSourceFormat = pSource->GetScanlineFormat();
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ScanlineFormat nDestinationFormat = pDestination->GetScanlineFormat();
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switch (nSourceFormat)
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{
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case ScanlineFormat::N24BitTcRgb:
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case ScanlineFormat::N24BitTcBgr:
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{
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if ( (nSourceFormat == ScanlineFormat::N24BitTcBgr && nDestinationFormat == ScanlineFormat::N32BitTcBgra)
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|| (nSourceFormat == ScanlineFormat::N24BitTcRgb && nDestinationFormat == ScanlineFormat::N32BitTcRgba))
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{
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blendBitmap24(pDestination, pSource, pSourceAlpha, nDstWidth, nDstHeight);
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return true;
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}
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}
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break;
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default: break;
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}
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return false;
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}
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void blendBitmap24(
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const BitmapWriteAccess* pDestination,
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const BitmapReadAccess* pSource,
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const BitmapReadAccess* pSourceAlpha,
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const tools::Long nDstWidth,
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const tools::Long nDstHeight)
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{
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Scanline pLine0, pLine1;
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Scanline pLineAlpha0, pLineAlpha1;
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Scanline pColorSample1, pColorSample2;
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Scanline pDestScanline;
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tools::Long nColor1Line1, nColor2Line1, nColor3Line1;
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tools::Long nColor1Line2, nColor2Line2, nColor3Line2;
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tools::Long nAlphaLine1, nAlphaLine2;
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sal_uInt8 nColor1, nColor2, nColor3, nAlpha;
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|
|
for (tools::Long nY = 0; nY < nDstHeight; nY++)
|
|
{
|
|
const tools::Long nMapY = mpMapY[nY];
|
|
const tools::Long nMapFY = mpMapYOffset[nY];
|
|
|
|
pLine0 = pSource->GetScanline(nMapY);
|
|
// tdf#95481 guard nMapY + 1 to be within bounds
|
|
pLine1 = (nMapY + 1 < pSource->Height()) ? pSource->GetScanline(nMapY + 1) : pLine0;
|
|
|
|
pLineAlpha0 = pSourceAlpha->GetScanline(nMapY);
|
|
// tdf#95481 guard nMapY + 1 to be within bounds
|
|
pLineAlpha1 = (nMapY + 1 < pSourceAlpha->Height()) ? pSourceAlpha->GetScanline(nMapY + 1) : pLineAlpha0;
|
|
|
|
pDestScanline = pDestination->GetScanline(nY);
|
|
|
|
for (tools::Long nX = 0; nX < nDstWidth; nX++)
|
|
{
|
|
const tools::Long nMapX = mpMapX[nX];
|
|
const tools::Long nMapFX = mpMapXOffset[nX];
|
|
|
|
pColorSample1 = pLine0 + 3 * nMapX;
|
|
pColorSample2 = (nMapX + 1 < pSource->Width()) ? pColorSample1 + 3 : pColorSample1;
|
|
nColor1Line1 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1++;
|
|
pColorSample2++;
|
|
nColor2Line1 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1++;
|
|
pColorSample2++;
|
|
nColor3Line1 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1 = pLine1 + 3 * nMapX;
|
|
pColorSample2 = (nMapX + 1 < pSource->Width()) ? pColorSample1 + 3 : pColorSample1;
|
|
nColor1Line2 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1++;
|
|
pColorSample2++;
|
|
nColor2Line2 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1++;
|
|
pColorSample2++;
|
|
nColor3Line2 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1 = pLineAlpha0 + nMapX;
|
|
pColorSample2 = (nMapX + 1 < pSourceAlpha->Width()) ? pColorSample1 + 1 : pColorSample1;
|
|
nAlphaLine1 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
pColorSample1 = pLineAlpha1 + nMapX;
|
|
pColorSample2 = (nMapX + 1 < pSourceAlpha->Width()) ? pColorSample1 + 1 : pColorSample1;
|
|
nAlphaLine2 = (static_cast<tools::Long>(*pColorSample1) << 7) + nMapFX * (static_cast<tools::Long>(*pColorSample2) - *pColorSample1);
|
|
|
|
nColor1 = (nColor1Line1 + nMapFY * ((nColor1Line2 >> 7) - (nColor1Line1 >> 7))) >> 7;
|
|
nColor2 = (nColor2Line1 + nMapFY * ((nColor2Line2 >> 7) - (nColor2Line1 >> 7))) >> 7;
|
|
nColor3 = (nColor3Line1 + nMapFY * ((nColor3Line2 >> 7) - (nColor3Line1 >> 7))) >> 7;
|
|
|
|
nAlpha = (nAlphaLine1 + nMapFY * ((nAlphaLine2 >> 7) - (nAlphaLine1 >> 7))) >> 7;
|
|
|
|
*pDestScanline = color::ColorChannelMerge(*pDestScanline, nColor1, nAlpha);
|
|
pDestScanline++;
|
|
*pDestScanline = color::ColorChannelMerge(*pDestScanline, nColor2, nAlpha);
|
|
pDestScanline++;
|
|
*pDestScanline = color::ColorChannelMerge(*pDestScanline, nColor3, nAlpha);
|
|
pDestScanline++;
|
|
pDestScanline++;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
struct TradScaleContext
|
|
{
|
|
std::unique_ptr<sal_Int32[]> mpMapX;
|
|
std::unique_ptr<sal_Int32[]> mpMapY;
|
|
|
|
TradScaleContext(tools::Rectangle const & aDstRect, tools::Rectangle const & aBitmapRect,
|
|
Size const & aOutSize, tools::Long nOffX, tools::Long nOffY)
|
|
|
|
: mpMapX(new sal_Int32[aDstRect.GetWidth()])
|
|
, mpMapY(new sal_Int32[aDstRect.GetHeight()])
|
|
{
|
|
const tools::Long nSrcWidth = aBitmapRect.GetWidth();
|
|
const tools::Long nSrcHeight = aBitmapRect.GetHeight();
|
|
|
|
const bool bHMirr = aOutSize.Width() < 0;
|
|
const bool bVMirr = aOutSize.Height() < 0;
|
|
|
|
generateSimpleMap(
|
|
nSrcWidth, aDstRect.GetWidth(), aBitmapRect.Left(),
|
|
aOutSize.Width(), nOffX, bHMirr, mpMapX.get());
|
|
|
|
generateSimpleMap(
|
|
nSrcHeight, aDstRect.GetHeight(), aBitmapRect.Top(),
|
|
aOutSize.Height(), nOffY, bVMirr, mpMapY.get());
|
|
}
|
|
|
|
private:
|
|
|
|
static void generateSimpleMap(tools::Long nSrcDimension, tools::Long nDstDimension, tools::Long nDstLocation,
|
|
tools::Long nOutDimension, tools::Long nOffset, bool bMirror, sal_Int32* pMap)
|
|
{
|
|
tools::Long nMirrorOffset = 0;
|
|
|
|
if (bMirror)
|
|
nMirrorOffset = (nDstLocation << 1) + nSrcDimension - 1;
|
|
|
|
for (tools::Long i = 0; i < nDstDimension; ++i, ++nOffset)
|
|
{
|
|
pMap[i] = nDstLocation + nOffset * nSrcDimension / nOutDimension;
|
|
if (bMirror)
|
|
pMap[i] = nMirrorOffset - pMap[i];
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
} // end anonymous namespace
|
|
|
|
void OutputDevice::DrawDeviceAlphaBitmapSlowPath(const Bitmap& rBitmap,
|
|
const AlphaMask& rAlpha, tools::Rectangle aDstRect, tools::Rectangle aBmpRect, Size const & aOutSize, Point const & aOutPoint)
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
VirtualDevice* pOldVDev = mpAlphaVDev;
|
|
|
|
const bool bHMirr = aOutSize.Width() < 0;
|
|
const bool bVMirr = aOutSize.Height() < 0;
|
|
|
|
// The scaling in this code path produces really ugly results - it
|
|
// does the most trivial scaling with no smoothing.
|
|
GDIMetaFile* pOldMetaFile = mpMetaFile;
|
|
const bool bOldMap = mbMap;
|
|
|
|
mpMetaFile = nullptr; // fdo#55044 reset before GetBitmap!
|
|
mbMap = false;
|
|
|
|
Bitmap aBmp(GetBitmap(aDstRect.TopLeft(), aDstRect.GetSize()));
|
|
|
|
// #109044# The generated bitmap need not necessarily be
|
|
// of aDstRect dimensions, it's internally clipped to
|
|
// window bounds. Thus, we correct the dest size here,
|
|
// since we later use it (in nDstWidth/Height) for pixel
|
|
// access)
|
|
// #i38887# reading from screen may sometimes fail
|
|
if (aBmp.ImplGetSalBitmap())
|
|
{
|
|
aDstRect.SetSize(aBmp.GetSizePixel());
|
|
}
|
|
|
|
const tools::Long nDstWidth = aDstRect.GetWidth();
|
|
const tools::Long nDstHeight = aDstRect.GetHeight();
|
|
|
|
// calculate offset in original bitmap
|
|
// in RTL case this is a little more complicated since the contents of the
|
|
// bitmap is not mirrored (it never is), however the paint region and bmp region
|
|
// are in mirrored coordinates, so the intersection of (aOutPt,aOutSz) with these
|
|
// is content wise somewhere else and needs to take mirroring into account
|
|
const tools::Long nOffX = IsRTLEnabled()
|
|
? aOutSize.Width() - aDstRect.GetWidth() - (aDstRect.Left() - aOutPoint.X())
|
|
: aDstRect.Left() - aOutPoint.X();
|
|
|
|
const tools::Long nOffY = aDstRect.Top() - aOutPoint.Y();
|
|
|
|
TradScaleContext aTradContext(aDstRect, aBmpRect, aOutSize, nOffX, nOffY);
|
|
|
|
BitmapScopedReadAccess pBitmapReadAccess(rBitmap);
|
|
BitmapScopedReadAccess pAlphaReadAccess(rAlpha);
|
|
|
|
SAL_WARN_IF(pAlphaReadAccess->GetScanlineFormat() != ScanlineFormat::N8BitPal, "vcl.gdi", "non-8bit alpha no longer supported!");
|
|
assert(pAlphaReadAccess->GetScanlineFormat() == ScanlineFormat::N8BitPal);
|
|
|
|
// #i38887# reading from screen may sometimes fail
|
|
if (aBmp.ImplGetSalBitmap())
|
|
{
|
|
Bitmap aNewBitmap;
|
|
|
|
if (mpAlphaVDev)
|
|
{
|
|
aNewBitmap = BlendBitmapWithAlpha(
|
|
aBmp, pBitmapReadAccess.get(), pAlphaReadAccess.get(),
|
|
aDstRect,
|
|
nOffY, nDstHeight,
|
|
nOffX, nDstWidth,
|
|
aTradContext.mpMapX.get(), aTradContext.mpMapY.get() );
|
|
}
|
|
else
|
|
{
|
|
LinearScaleContext aLinearContext(aDstRect, aBmpRect, aOutSize, nOffX, nOffY);
|
|
|
|
if (aLinearContext.blendBitmap( BitmapScopedWriteAccess(aBmp).get(), pBitmapReadAccess.get(), pAlphaReadAccess.get(),
|
|
nDstWidth, nDstHeight))
|
|
{
|
|
aNewBitmap = std::move(aBmp);
|
|
}
|
|
else
|
|
{
|
|
aNewBitmap = BlendBitmap(
|
|
aBmp, pBitmapReadAccess.get(), pAlphaReadAccess.get(),
|
|
nOffY, nDstHeight,
|
|
nOffX, nDstWidth,
|
|
aBmpRect, aOutSize,
|
|
bHMirr, bVMirr,
|
|
aTradContext.mpMapX.get(), aTradContext.mpMapY.get() );
|
|
}
|
|
}
|
|
|
|
// #110958# Disable alpha VDev, we're doing the necessary
|
|
// stuff explicitly further below
|
|
if (mpAlphaVDev)
|
|
mpAlphaVDev = nullptr;
|
|
|
|
DrawBitmap(aDstRect.TopLeft(), aNewBitmap);
|
|
|
|
// #110958# Enable alpha VDev again
|
|
mpAlphaVDev = pOldVDev;
|
|
}
|
|
|
|
mbMap = bOldMap;
|
|
mpMetaFile = pOldMetaFile;
|
|
}
|
|
|
|
bool OutputDevice::HasFastDrawTransformedBitmap() const
|
|
{
|
|
if( ImplIsRecordLayout() )
|
|
return false;
|
|
|
|
if (!mpGraphics && !AcquireGraphics())
|
|
return false;
|
|
assert(mpGraphics);
|
|
|
|
return mpGraphics->HasFastDrawTransformedBitmap();
|
|
}
|
|
|
|
void OutputDevice::DrawImage( const Point& rPos, const Image& rImage, DrawImageFlags nStyle )
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
DrawImage( rPos, Size(), rImage, nStyle );
|
|
}
|
|
|
|
void OutputDevice::DrawImage( const Point& rPos, const Size& rSize,
|
|
const Image& rImage, DrawImageFlags nStyle )
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
bool bIsSizeValid = !rSize.IsEmpty();
|
|
|
|
if (!ImplIsRecordLayout())
|
|
{
|
|
Image& rNonConstImage = const_cast<Image&>(rImage);
|
|
if (bIsSizeValid)
|
|
rNonConstImage.Draw(this, rPos, nStyle, &rSize);
|
|
else
|
|
rNonConstImage.Draw(this, rPos, nStyle);
|
|
}
|
|
}
|
|
|
|
namespace
|
|
{
|
|
// Co = Cs + Cd*(1-As) premultiplied alpha -or-
|
|
// Co = (AsCs + AdCd*(1-As)) / Ao
|
|
sal_uInt8 CalcColor( const sal_uInt8 nSourceColor, const sal_uInt8 nSourceAlpha,
|
|
const sal_uInt8 nDstAlpha, const sal_uInt8 nResAlpha, const sal_uInt8 nDestColor )
|
|
{
|
|
int c = nResAlpha ? ( static_cast<int>(nSourceAlpha)*nSourceColor + static_cast<int>(nDstAlpha)*nDestColor -
|
|
static_cast<int>(nDstAlpha)*nDestColor*nSourceAlpha/255 ) / static_cast<int>(nResAlpha) : 0;
|
|
return sal_uInt8( c );
|
|
}
|
|
|
|
BitmapColor AlphaBlend( int nX, int nY,
|
|
const tools::Long nMapX,
|
|
const tools::Long nMapY,
|
|
BitmapReadAccess const * pP,
|
|
BitmapReadAccess const * pA,
|
|
BitmapReadAccess const * pB,
|
|
BitmapWriteAccess const * pAlphaW,
|
|
sal_uInt8& nResAlpha )
|
|
{
|
|
BitmapColor aDstCol,aSrcCol;
|
|
aSrcCol = pP->GetColor( nMapY, nMapX );
|
|
aDstCol = pB->GetColor( nY, nX );
|
|
|
|
const sal_uInt8 nSrcAlpha = pA->GetPixelIndex( nMapY, nMapX );
|
|
const sal_uInt8 nDstAlpha = pAlphaW->GetPixelIndex( nY, nX );
|
|
|
|
// Perform porter-duff compositing 'over' operation
|
|
|
|
// Co = Cs + Cd*(1-As)
|
|
// Ad = As + Ad*(1-As)
|
|
nResAlpha = static_cast<int>(nSrcAlpha) + static_cast<int>(nDstAlpha) - static_cast<int>(nDstAlpha)*nSrcAlpha/255;
|
|
|
|
aDstCol.SetRed( CalcColor( aSrcCol.GetRed(), nSrcAlpha, nDstAlpha, nResAlpha, aDstCol.GetRed() ) );
|
|
aDstCol.SetBlue( CalcColor( aSrcCol.GetBlue(), nSrcAlpha, nDstAlpha, nResAlpha, aDstCol.GetBlue() ) );
|
|
aDstCol.SetGreen( CalcColor( aSrcCol.GetGreen(), nSrcAlpha, nDstAlpha, nResAlpha, aDstCol.GetGreen() ) );
|
|
|
|
return aDstCol;
|
|
}
|
|
}
|
|
|
|
void OutputDevice::BlendBitmap(
|
|
const SalTwoRect& rPosAry,
|
|
const Bitmap& rBmp )
|
|
{
|
|
mpGraphics->BlendBitmap( rPosAry, *rBmp.ImplGetSalBitmap(), *this );
|
|
}
|
|
|
|
Bitmap OutputDevice::BlendBitmapWithAlpha(
|
|
Bitmap& aBmp,
|
|
BitmapReadAccess const * pP,
|
|
BitmapReadAccess const * pA,
|
|
const tools::Rectangle& aDstRect,
|
|
const sal_Int32 nOffY,
|
|
const sal_Int32 nDstHeight,
|
|
const sal_Int32 nOffX,
|
|
const sal_Int32 nDstWidth,
|
|
const sal_Int32* pMapX,
|
|
const sal_Int32* pMapY )
|
|
|
|
{
|
|
BitmapColor aDstCol;
|
|
Bitmap res;
|
|
int nX, nY;
|
|
sal_uInt8 nResAlpha;
|
|
|
|
SAL_WARN_IF( !mpAlphaVDev, "vcl.gdi", "BlendBitmapWithAlpha(): call me only with valid alpha VirtualDevice!" );
|
|
|
|
bool bOldMapMode( mpAlphaVDev->IsMapModeEnabled() );
|
|
mpAlphaVDev->EnableMapMode(false);
|
|
|
|
Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( aDstRect.TopLeft(), aDstRect.GetSize() ) );
|
|
BitmapScopedWriteAccess pAlphaW(aAlphaBitmap);
|
|
|
|
if( GetBitCount() <= 8 )
|
|
{
|
|
Bitmap aDither(aBmp.GetSizePixel(), vcl::PixelFormat::N8_BPP);
|
|
BitmapColor aIndex( 0 );
|
|
BitmapScopedReadAccess pB(aBmp);
|
|
BitmapScopedWriteAccess pW(aDither);
|
|
|
|
if (pB && pP && pA && pW && pAlphaW)
|
|
{
|
|
int nOutY;
|
|
|
|
for( nY = 0, nOutY = nOffY; nY < nDstHeight; nY++, nOutY++ )
|
|
{
|
|
const tools::Long nMapY = pMapY[ nY ];
|
|
const tools::Long nModY = ( nOutY & 0x0FL ) << 4;
|
|
int nOutX;
|
|
|
|
Scanline pScanline = pW->GetScanline(nY);
|
|
Scanline pScanlineAlpha = pAlphaW->GetScanline(nY);
|
|
for( nX = 0, nOutX = nOffX; nX < nDstWidth; nX++, nOutX++ )
|
|
{
|
|
const tools::Long nMapX = pMapX[ nX ];
|
|
const sal_uLong nD = nVCLDitherLut[ nModY | ( nOutX & 0x0FL ) ];
|
|
|
|
aDstCol = AlphaBlend( nX, nY, nMapX, nMapY, pP, pA, pB.get(), pAlphaW.get(), nResAlpha );
|
|
|
|
aIndex.SetIndex( static_cast<sal_uInt8>( nVCLRLut[ ( nVCLLut[ aDstCol.GetRed() ] + nD ) >> 16 ] +
|
|
nVCLGLut[ ( nVCLLut[ aDstCol.GetGreen() ] + nD ) >> 16 ] +
|
|
nVCLBLut[ ( nVCLLut[ aDstCol.GetBlue() ] + nD ) >> 16 ] ) );
|
|
pW->SetPixelOnData( pScanline, nX, aIndex );
|
|
|
|
aIndex.SetIndex( static_cast<sal_uInt8>( nVCLRLut[ ( nVCLLut[ nResAlpha ] + nD ) >> 16 ] +
|
|
nVCLGLut[ ( nVCLLut[ nResAlpha ] + nD ) >> 16 ] +
|
|
nVCLBLut[ ( nVCLLut[ nResAlpha ] + nD ) >> 16 ] ) );
|
|
pAlphaW->SetPixelOnData( pScanlineAlpha, nX, aIndex );
|
|
}
|
|
}
|
|
}
|
|
pB.reset();
|
|
pW.reset();
|
|
res = std::move(aDither);
|
|
}
|
|
else
|
|
{
|
|
BitmapScopedWriteAccess pB(aBmp);
|
|
if (pB && pP && pA && pAlphaW)
|
|
{
|
|
for( nY = 0; nY < nDstHeight; nY++ )
|
|
{
|
|
const tools::Long nMapY = pMapY[ nY ];
|
|
Scanline pScanlineB = pB->GetScanline(nY);
|
|
Scanline pScanlineAlpha = pAlphaW->GetScanline(nY);
|
|
|
|
for( nX = 0; nX < nDstWidth; nX++ )
|
|
{
|
|
const tools::Long nMapX = pMapX[ nX ];
|
|
aDstCol = AlphaBlend( nX, nY, nMapX, nMapY, pP, pA, pB.get(), pAlphaW.get(), nResAlpha );
|
|
|
|
pB->SetPixelOnData(pScanlineB, nX, pB->GetBestMatchingColor(aDstCol));
|
|
pAlphaW->SetPixelOnData(pScanlineAlpha, nX, pB->GetBestMatchingColor(Color(nResAlpha, nResAlpha, nResAlpha)));
|
|
}
|
|
}
|
|
}
|
|
pB.reset();
|
|
res = aBmp;
|
|
}
|
|
|
|
pAlphaW.reset();
|
|
mpAlphaVDev->DrawBitmap( aDstRect.TopLeft(), aAlphaBitmap );
|
|
mpAlphaVDev->EnableMapMode( bOldMapMode );
|
|
|
|
return res;
|
|
}
|
|
|
|
Bitmap OutputDevice::BlendBitmap(
|
|
Bitmap& aBmp,
|
|
BitmapReadAccess const * pP,
|
|
BitmapReadAccess const * pA,
|
|
const sal_Int32 nOffY,
|
|
const sal_Int32 nDstHeight,
|
|
const sal_Int32 nOffX,
|
|
const sal_Int32 nDstWidth,
|
|
const tools::Rectangle& aBmpRect,
|
|
const Size& aOutSz,
|
|
const bool bHMirr,
|
|
const bool bVMirr,
|
|
const sal_Int32* pMapX,
|
|
const sal_Int32* pMapY )
|
|
{
|
|
if( !pP || !pA )
|
|
return aBmp;
|
|
|
|
if( GetBitCount() <= 8 )
|
|
{
|
|
Bitmap aDither(aBmp.GetSizePixel(), vcl::PixelFormat::N8_BPP);
|
|
BitmapColor aIndex( 0 );
|
|
BitmapScopedReadAccess pB(aBmp);
|
|
BitmapScopedWriteAccess pW(aDither);
|
|
|
|
for( int nY = 0, nOutY = nOffY; nY < nDstHeight; nY++, nOutY++ )
|
|
{
|
|
tools::Long nMapY = pMapY[ nY ];
|
|
if (bVMirr)
|
|
{
|
|
nMapY = aBmpRect.Bottom() - nMapY;
|
|
}
|
|
const tools::Long nModY = ( nOutY & 0x0FL ) << 4;
|
|
|
|
Scanline pScanline = pW->GetScanline(nY);
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|
Scanline pScanlineAlpha = pA->GetScanline(nMapY);
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|
for( int nX = 0, nOutX = nOffX; nX < nDstWidth; nX++, nOutX++ )
|
|
{
|
|
tools::Long nMapX = pMapX[ nX ];
|
|
if (bHMirr)
|
|
{
|
|
nMapX = aBmpRect.Right() - nMapX;
|
|
}
|
|
const sal_uLong nD = nVCLDitherLut[ nModY | ( nOutX & 0x0FL ) ];
|
|
|
|
BitmapColor aDstCol = pB->GetColor( nY, nX );
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|
aDstCol.Merge( pP->GetColor( nMapY, nMapX ), 255 - pA->GetIndexFromData( pScanlineAlpha, nMapX ) );
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|
aIndex.SetIndex( static_cast<sal_uInt8>( nVCLRLut[ ( nVCLLut[ aDstCol.GetRed() ] + nD ) >> 16 ] +
|
|
nVCLGLut[ ( nVCLLut[ aDstCol.GetGreen() ] + nD ) >> 16 ] +
|
|
nVCLBLut[ ( nVCLLut[ aDstCol.GetBlue() ] + nD ) >> 16 ] ) );
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|
pW->SetPixelOnData( pScanline, nX, aIndex );
|
|
}
|
|
}
|
|
|
|
pB.reset();
|
|
pW.reset();
|
|
return aDither;
|
|
}
|
|
|
|
BitmapScopedWriteAccess pB(aBmp);
|
|
|
|
bool bFastBlend = false;
|
|
if (!bHMirr && !bVMirr)
|
|
{
|
|
SalTwoRect aTR(aBmpRect.Left(), aBmpRect.Top(), aBmpRect.GetWidth(), aBmpRect.GetHeight(),
|
|
nOffX, nOffY, aOutSz.Width(), aOutSz.Height());
|
|
|
|
bFastBlend = ImplFastBitmapBlending(*pB, *pP, *pA, aTR);
|
|
}
|
|
|
|
if (!bFastBlend)
|
|
{
|
|
for (int nY = 0; nY < nDstHeight; nY++)
|
|
{
|
|
tools::Long nMapY = pMapY[nY];
|
|
|
|
if (bVMirr)
|
|
nMapY = aBmpRect.Bottom() - nMapY;
|
|
|
|
Scanline pAScan = pA->GetScanline(nMapY);
|
|
Scanline pBScan = pB->GetScanline(nY);
|
|
for(int nX = 0; nX < nDstWidth; nX++)
|
|
{
|
|
tools::Long nMapX = pMapX[nX];
|
|
|
|
if (bHMirr)
|
|
nMapX = aBmpRect.Right() - nMapX;
|
|
|
|
BitmapColor aDstCol = pB->GetPixelFromData(pBScan, nX);
|
|
aDstCol.Merge(pP->GetColor(nMapY, nMapX), pAScan[nMapX]);
|
|
pB->SetPixelOnData(pBScan, nX, aDstCol);
|
|
}
|
|
}
|
|
}
|
|
|
|
pB.reset();
|
|
return aBmp;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|