forked from amazingfate/loongoffice
403af381c3
Change-Id: I58734852180f345ac2242d5d89e3d7e5da2ed6e1 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120684 Tested-by: Jenkins Reviewed-by: Caolán McNamara <caolanm@redhat.com>
1788 lines
66 KiB
C++
1788 lines
66 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 <cassert>
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#include <cstdlib>
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#include <vcl/bitmap.hxx>
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#include <vcl/bitmapex.hxx>
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#include <vcl/BitmapFilterStackBlur.hxx>
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#include <vcl/canvastools.hxx>
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#include <vcl/gdimtf.hxx>
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#include <vcl/metaact.hxx>
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#include <config_features.h>
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#include <vcl/skia/SkiaHelper.hxx>
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#include <vcl/outdev.hxx>
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#include <vcl/virdev.hxx>
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#include <vcl/image.hxx>
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#include <vcl/BitmapMonochromeFilter.hxx>
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#include <bitmap/BitmapWriteAccess.hxx>
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#include <bitmap/bmpfast.hxx>
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#include <salgdi.hxx>
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#include <salbmp.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.hxx>
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#include <memory>
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#include <comphelper/lok.hxx>
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#include <sal/log.hxx>
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#include <osl/diagnose.h>
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#include <tools/helpers.hxx>
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#include <tools/debug.hxx>
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#include <rtl/math.hxx>
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#include <o3tl/unit_conversion.hxx>
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#include <vcl/dibtools.hxx>
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#include <tools/stream.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, 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( PushFlags::LINECOLOR | 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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const double nScaleX = aPosAry.mnDestWidth / static_cast<double>(aPosAry.mnSrcWidth);
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const 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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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;
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aPosAry.mnSrcHeight = aPosAry.mnDestHeight;
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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::GetDownsampledBitmap( const Size& rDstSz,
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const Point& rSrcPt, const Size& rSrcSz,
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const Bitmap& rBmp, tools::Long nMaxBmpDPIX, tools::Long nMaxBmpDPIY )
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{
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Bitmap aBmp( rBmp );
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if( !aBmp.IsEmpty() )
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{
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const tools::Rectangle aBmpRect( Point(), aBmp.GetSizePixel() );
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tools::Rectangle aSrcRect( rSrcPt, rSrcSz );
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// do cropping if necessary
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if( aSrcRect.Intersection( aBmpRect ) != aBmpRect )
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{
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if( !aSrcRect.IsEmpty() )
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aBmp.Crop( aSrcRect );
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else
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aBmp.SetEmpty();
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}
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if( !aBmp.IsEmpty() )
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{
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// do downsampling if necessary
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Size aDstSizeTwip( PixelToLogic(LogicToPixel(rDstSz), MapMode(MapUnit::MapTwip)) );
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// #103209# Normalize size (mirroring has to happen outside of this method)
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aDstSizeTwip = Size( std::abs(aDstSizeTwip.Width()), std::abs(aDstSizeTwip.Height()) );
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const Size aBmpSize( aBmp.GetSizePixel() );
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const double fBmpPixelX = aBmpSize.Width();
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const double fBmpPixelY = aBmpSize.Height();
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const double fMaxPixelX
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= o3tl::convert<double>(aDstSizeTwip.Width(), o3tl::Length::twip, o3tl::Length::in)
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* nMaxBmpDPIX;
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const double fMaxPixelY
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= o3tl::convert<double>(aDstSizeTwip.Height(), o3tl::Length::twip, o3tl::Length::in)
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* nMaxBmpDPIY;
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// check, if the bitmap DPI exceeds the maximum DPI (allow 4 pixel rounding tolerance)
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if( ( ( fBmpPixelX > ( fMaxPixelX + 4 ) ) ||
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( fBmpPixelY > ( fMaxPixelY + 4 ) ) ) &&
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( fBmpPixelY > 0.0 ) && ( fMaxPixelY > 0.0 ) )
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{
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// do scaling
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Size aNewBmpSize;
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const double fBmpWH = fBmpPixelX / fBmpPixelY;
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const double fMaxWH = fMaxPixelX / fMaxPixelY;
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if( fBmpWH < fMaxWH )
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{
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aNewBmpSize.setWidth( FRound( fMaxPixelY * fBmpWH ) );
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aNewBmpSize.setHeight( FRound( fMaxPixelY ) );
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}
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else if( fBmpWH > 0.0 )
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{
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aNewBmpSize.setWidth( FRound( fMaxPixelX ) );
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aNewBmpSize.setHeight( FRound( fMaxPixelX / fBmpWH) );
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}
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if( aNewBmpSize.Width() && aNewBmpSize.Height() )
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aBmp.Scale( aNewBmpSize );
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else
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aBmp.SetEmpty();
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}
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}
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}
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return aBmp;
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}
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void OutputDevice::DrawBitmapEx( const Point& rDestPt,
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const BitmapEx& rBitmapEx )
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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( !rBitmapEx.IsAlpha() )
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{
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DrawBitmap( rDestPt, rBitmapEx.GetBitmap() );
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}
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else
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{
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const Size aSizePix( rBitmapEx.GetSizePixel() );
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DrawBitmapEx( rDestPt, PixelToLogic( aSizePix ), Point(), aSizePix, rBitmapEx, MetaActionType::BMPEX );
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}
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}
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void OutputDevice::DrawBitmapEx( const Point& rDestPt, const Size& rDestSize,
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const BitmapEx& rBitmapEx )
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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 ( !rBitmapEx.IsAlpha() )
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{
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DrawBitmap( rDestPt, rDestSize, rBitmapEx.GetBitmap() );
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}
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else
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{
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DrawBitmapEx( rDestPt, rDestSize, Point(), rBitmapEx.GetSizePixel(), rBitmapEx, MetaActionType::BMPEXSCALE );
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}
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}
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void OutputDevice::DrawBitmapEx( const Point& rDestPt, const Size& rDestSize,
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const Point& rSrcPtPixel, const Size& rSrcSizePixel,
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const BitmapEx& rBitmapEx, 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( !rBitmapEx.IsAlpha() )
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{
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DrawBitmap( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, rBitmapEx.GetBitmap() );
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}
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else
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{
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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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BitmapEx aBmpEx( rBitmapEx );
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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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Bitmap aColorBmp(aBmpEx.GetSizePixel(), vcl::PixelFormat::N1_BPP);
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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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aColorBmp.Erase( Color( cCmpVal, cCmpVal, cCmpVal ) );
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if( aBmpEx.IsAlpha() )
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{
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// Create one-bit mask out of alpha channel, by
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// thresholding it at alpha=0.5. As
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// DRAWMODE_BLACK/WHITEBITMAP requires monochrome
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// output, having alpha-induced grey levels is not
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// acceptable.
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BitmapEx aMaskEx(aBmpEx.GetAlpha().GetBitmap());
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BitmapFilter::Filter(aMaskEx, BitmapMonochromeFilter(129));
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aBmpEx = BitmapEx(aColorBmp, aMaskEx.GetBitmap());
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}
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else
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{
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aBmpEx = BitmapEx( aColorBmp, aBmpEx.GetAlpha() );
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}
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}
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else if( !aBmpEx.IsEmpty() )
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{
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if ( mnDrawMode & DrawModeFlags::GrayBitmap )
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aBmpEx.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::BMPEX:
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mpMetaFile->AddAction( new MetaBmpExAction( rDestPt, aBmpEx ) );
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break;
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case MetaActionType::BMPEXSCALE:
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mpMetaFile->AddAction( new MetaBmpExScaleAction( rDestPt, rDestSize, aBmpEx ) );
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break;
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case MetaActionType::BMPEXSCALEPART:
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mpMetaFile->AddAction( new MetaBmpExScalePartAction( rDestPt, rDestSize,
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rSrcPtPixel, rSrcSizePixel, aBmpEx ) );
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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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if ( mbInitClipRegion )
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InitClipRegion();
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if ( mbOutputClipped )
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return;
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DrawDeviceBitmap( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, aBmpEx );
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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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Bitmap aBmp;
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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 ( mpGraphics || AcquireGraphics() )
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{
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assert(mpGraphics);
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if ( nWidth > 0 && nHeight > 0 && nX <= (mnOutWidth + mnOutOffX) && nY <= (mnOutHeight + mnOutOffY))
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{
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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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}
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}
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return aBmp;
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}
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|
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BitmapEx OutputDevice::GetBitmapEx( const Point& rSrcPt, const Size& rSize ) const
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|
{
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|
|
// #110958# Extract alpha value from VDev, if any
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if( mpAlphaVDev )
|
|
{
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Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( rSrcPt, rSize ) );
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|
|
|
// ensure 8 bit alpha
|
|
if (aAlphaBitmap.getPixelFormat() > vcl::PixelFormat::N8_BPP)
|
|
aAlphaBitmap.Convert( BmpConversion::N8BitNoConversion );
|
|
|
|
return BitmapEx(GetBitmap( rSrcPt, rSize ), AlphaMask( aAlphaBitmap ) );
|
|
}
|
|
else
|
|
return BitmapEx(GetBitmap( rSrcPt, rSize ));
|
|
}
|
|
|
|
void OutputDevice::DrawDeviceBitmap( const Point& rDestPt, const Size& rDestSize,
|
|
const Point& rSrcPtPixel, const Size& rSrcSizePixel,
|
|
BitmapEx& rBitmapEx )
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
if (rBitmapEx.IsAlpha())
|
|
{
|
|
DrawDeviceAlphaBitmap(rBitmapEx.GetBitmap(), rBitmapEx.GetAlpha(), rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel);
|
|
}
|
|
else if (!rBitmapEx.IsEmpty())
|
|
{
|
|
SalTwoRect aPosAry(rSrcPtPixel.X(), rSrcPtPixel.Y(), rSrcSizePixel.Width(), rSrcSizePixel.Height(),
|
|
ImplLogicXToDevicePixel(rDestPt.X()), ImplLogicYToDevicePixel(rDestPt.Y()),
|
|
ImplLogicWidthToDevicePixel(rDestSize.Width()),
|
|
ImplLogicHeightToDevicePixel(rDestSize.Height()));
|
|
|
|
const BmpMirrorFlags nMirrFlags = AdjustTwoRect(aPosAry, rBitmapEx.GetSizePixel());
|
|
|
|
if (aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight)
|
|
{
|
|
|
|
if (nMirrFlags != BmpMirrorFlags::NONE)
|
|
rBitmapEx.Mirror(nMirrFlags);
|
|
|
|
const SalBitmap* pSalSrcBmp = rBitmapEx.ImplGetBitmapSalBitmap().get();
|
|
std::shared_ptr<SalBitmap> xMaskBmp = rBitmapEx.maAlphaMask.ImplGetSalBitmap();
|
|
|
|
if (xMaskBmp)
|
|
{
|
|
bool bTryDirectPaint(pSalSrcBmp);
|
|
|
|
if (bTryDirectPaint && mpGraphics->DrawAlphaBitmap(aPosAry, *pSalSrcBmp, *xMaskBmp, *this))
|
|
{
|
|
// tried to paint as alpha directly. If this worked, we are done (except
|
|
// alpha, see below)
|
|
}
|
|
else
|
|
{
|
|
// #4919452# reduce operation area to bounds of
|
|
// cliprect. since masked transparency involves
|
|
// creation of a large vdev and copying the screen
|
|
// content into that (slooow read from framebuffer),
|
|
// that should considerably increase performance for
|
|
// large bitmaps and small clippings.
|
|
|
|
// Note that this optimization is a workaround for a
|
|
// Writer peculiarity, namely, to decompose background
|
|
// graphics into myriads of disjunct, tiny
|
|
// rectangles. That otherwise kills us here, since for
|
|
// transparent output, SAL always prepares the whole
|
|
// bitmap, if aPosAry contains the whole bitmap (and
|
|
// it's _not_ to blame for that).
|
|
|
|
// Note the call to ImplPixelToDevicePixel(), since
|
|
// aPosAry already contains the mnOutOff-offsets, they
|
|
// also have to be applied to the region
|
|
tools::Rectangle aClipRegionBounds( ImplPixelToDevicePixel(maRegion).GetBoundRect() );
|
|
|
|
// TODO: Also respect scaling (that's a bit tricky,
|
|
// since the source points have to move fractional
|
|
// amounts (which is not possible, thus has to be
|
|
// emulated by increases copy area)
|
|
// const double nScaleX( aPosAry.mnDestWidth / aPosAry.mnSrcWidth );
|
|
// const double nScaleY( aPosAry.mnDestHeight / aPosAry.mnSrcHeight );
|
|
|
|
// for now, only identity scales allowed
|
|
if (!aClipRegionBounds.IsEmpty() &&
|
|
aPosAry.mnDestWidth == aPosAry.mnSrcWidth &&
|
|
aPosAry.mnDestHeight == aPosAry.mnSrcHeight)
|
|
{
|
|
// now intersect dest rect with clip region
|
|
aClipRegionBounds.Intersection(tools::Rectangle(aPosAry.mnDestX,
|
|
aPosAry.mnDestY,
|
|
aPosAry.mnDestX + aPosAry.mnDestWidth - 1,
|
|
aPosAry.mnDestY + aPosAry.mnDestHeight - 1));
|
|
|
|
// Note: I could theoretically optimize away the
|
|
// DrawBitmap below, if the region is empty
|
|
// here. Unfortunately, cannot rule out that
|
|
// somebody relies on the side effects.
|
|
if (!aClipRegionBounds.IsEmpty())
|
|
{
|
|
aPosAry.mnSrcX += aClipRegionBounds.Left() - aPosAry.mnDestX;
|
|
aPosAry.mnSrcY += aClipRegionBounds.Top() - aPosAry.mnDestY;
|
|
aPosAry.mnSrcWidth = aClipRegionBounds.GetWidth();
|
|
aPosAry.mnSrcHeight = aClipRegionBounds.GetHeight();
|
|
|
|
aPosAry.mnDestX = aClipRegionBounds.Left();
|
|
aPosAry.mnDestY = aClipRegionBounds.Top();
|
|
aPosAry.mnDestWidth = aClipRegionBounds.GetWidth();
|
|
aPosAry.mnDestHeight = aClipRegionBounds.GetHeight();
|
|
}
|
|
}
|
|
|
|
mpGraphics->DrawBitmap(aPosAry, *pSalSrcBmp, *xMaskBmp, *this);
|
|
}
|
|
|
|
// #110958# Paint mask to alpha channel. Luckily, the
|
|
// black and white representation of the mask maps to
|
|
// the alpha channel
|
|
|
|
// #i25167# Restrict mask painting to _opaque_ areas
|
|
// of the mask, otherwise we spoil areas where no
|
|
// bitmap content was ever visible. Interestingly
|
|
// enough, this can be achieved by taking the mask as
|
|
// the transparency mask of itself
|
|
if (mpAlphaVDev)
|
|
mpAlphaVDev->DrawBitmapEx(rDestPt,
|
|
rDestSize,
|
|
BitmapEx(rBitmapEx.GetAlpha(),
|
|
rBitmapEx.GetAlpha()));
|
|
}
|
|
else
|
|
{
|
|
mpGraphics->DrawBitmap(aPosAry, *pSalSrcBmp, *this);
|
|
|
|
if (mpAlphaVDev)
|
|
{
|
|
// #i32109#: Make bitmap area opaque
|
|
mpAlphaVDev->ImplFillOpaqueRectangle( tools::Rectangle(rDestPt, rDestSize) );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void OutputDevice::DrawDeviceAlphaBitmap( const Bitmap& rBmp, const AlphaMask& rAlpha,
|
|
const Point& rDestPt, const Size& rDestSize,
|
|
const Point& rSrcPtPixel, const Size& rSrcSizePixel )
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
Point aOutPt(LogicToPixel(rDestPt));
|
|
Size aOutSz(LogicToPixel(rDestSize));
|
|
tools::Rectangle aDstRect(Point(), GetOutputSizePixel());
|
|
|
|
const bool bHMirr = aOutSz.Width() < 0;
|
|
const bool bVMirr = aOutSz.Height() < 0;
|
|
|
|
ClipToPaintRegion(aDstRect);
|
|
|
|
BmpMirrorFlags mirrorFlags = BmpMirrorFlags::NONE;
|
|
if (bHMirr)
|
|
{
|
|
aOutSz.setWidth( -aOutSz.Width() );
|
|
aOutPt.AdjustX( -(aOutSz.Width() - 1) );
|
|
mirrorFlags |= BmpMirrorFlags::Horizontal;
|
|
}
|
|
|
|
if (bVMirr)
|
|
{
|
|
aOutSz.setHeight( -aOutSz.Height() );
|
|
aOutPt.AdjustY( -(aOutSz.Height() - 1) );
|
|
mirrorFlags |= BmpMirrorFlags::Vertical;
|
|
}
|
|
|
|
if (aDstRect.Intersection(tools::Rectangle(aOutPt, aOutSz)).IsEmpty())
|
|
return;
|
|
|
|
{
|
|
Point aRelPt = aOutPt + Point(mnOutOffX, mnOutOffY);
|
|
SalTwoRect aTR(
|
|
rSrcPtPixel.X(), rSrcPtPixel.Y(),
|
|
rSrcSizePixel.Width(), rSrcSizePixel.Height(),
|
|
aRelPt.X(), aRelPt.Y(),
|
|
aOutSz.Width(), aOutSz.Height());
|
|
|
|
Bitmap bitmap(rBmp);
|
|
AlphaMask alpha(rAlpha);
|
|
if(bHMirr || bVMirr)
|
|
{
|
|
bitmap.Mirror(mirrorFlags);
|
|
alpha.Mirror(mirrorFlags);
|
|
}
|
|
SalBitmap* pSalSrcBmp = bitmap.ImplGetSalBitmap().get();
|
|
SalBitmap* pSalAlphaBmp = alpha.ImplGetSalBitmap().get();
|
|
|
|
// #i83087# Naturally, system alpha blending (SalGraphics::DrawAlphaBitmap) cannot work
|
|
// with separate alpha VDev
|
|
|
|
// try to blend the alpha bitmap with the alpha virtual device
|
|
if (mpAlphaVDev)
|
|
{
|
|
Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( aRelPt, aOutSz ) );
|
|
if (SalBitmap* pSalAlphaBmp2 = aAlphaBitmap.ImplGetSalBitmap().get())
|
|
{
|
|
if (mpGraphics->BlendAlphaBitmap(aTR, *pSalSrcBmp, *pSalAlphaBmp, *pSalAlphaBmp2, *this))
|
|
{
|
|
mpAlphaVDev->BlendBitmap(aTR, rAlpha);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (mpGraphics->DrawAlphaBitmap(aTR, *pSalSrcBmp, *pSalAlphaBmp, *this))
|
|
return;
|
|
}
|
|
|
|
// we need to make sure Skia never reaches this slow code path
|
|
assert(!SkiaHelper::isVCLSkiaEnabled());
|
|
}
|
|
|
|
tools::Rectangle aBmpRect(Point(), rBmp.GetSizePixel());
|
|
if (!aBmpRect.Intersection(tools::Rectangle(rSrcPtPixel, rSrcSizePixel)).IsEmpty())
|
|
{
|
|
Point auxOutPt(LogicToPixel(rDestPt));
|
|
Size auxOutSz(LogicToPixel(rDestSize));
|
|
|
|
// HACK: The function is broken with alpha vdev and mirroring, mirror here.
|
|
Bitmap bitmap(rBmp);
|
|
AlphaMask alpha(rAlpha);
|
|
if(mpAlphaVDev && (bHMirr || bVMirr))
|
|
{
|
|
bitmap.Mirror(mirrorFlags);
|
|
alpha.Mirror(mirrorFlags);
|
|
auxOutPt = aOutPt;
|
|
auxOutSz = aOutSz;
|
|
}
|
|
DrawDeviceAlphaBitmapSlowPath(bitmap, alpha, aDstRect, aBmpRect, auxOutSz, auxOutPt);
|
|
}
|
|
}
|
|
|
|
namespace
|
|
{
|
|
|
|
struct LinearScaleContext
|
|
{
|
|
std::unique_ptr<tools::Long[]> mpMapX;
|
|
std::unique_ptr<tools::Long[]> mpMapY;
|
|
|
|
std::unique_ptr<tools::Long[]> mpMapXOffset;
|
|
std::unique_ptr<tools::Long[]> mpMapYOffset;
|
|
|
|
LinearScaleContext(tools::Rectangle const & aDstRect, tools::Rectangle const & aBitmapRect,
|
|
Size const & aOutSize, tools::Long nOffX, tools::Long nOffY)
|
|
|
|
: mpMapX(new tools::Long[aDstRect.GetWidth()])
|
|
, mpMapY(new tools::Long[aDstRect.GetHeight()])
|
|
, mpMapXOffset(new tools::Long[aDstRect.GetWidth()])
|
|
, mpMapYOffset(new tools::Long[aDstRect.GetHeight()])
|
|
{
|
|
const tools::Long nSrcWidth = aBitmapRect.GetWidth();
|
|
const tools::Long nSrcHeight = aBitmapRect.GetHeight();
|
|
|
|
generateSimpleMap(
|
|
nSrcWidth, aDstRect.GetWidth(), aBitmapRect.Left(),
|
|
aOutSize.Width(), nOffX, mpMapX.get(), mpMapXOffset.get());
|
|
|
|
generateSimpleMap(
|
|
nSrcHeight, aDstRect.GetHeight(), aBitmapRect.Top(),
|
|
aOutSize.Height(), nOffY, mpMapY.get(), mpMapYOffset.get());
|
|
}
|
|
|
|
private:
|
|
|
|
static void generateSimpleMap(tools::Long nSrcDimension, tools::Long nDstDimension, tools::Long nDstLocation,
|
|
tools::Long nOutDimension, tools::Long nOffset, tools::Long* pMap, tools::Long* pMapOffset)
|
|
{
|
|
|
|
const double fReverseScale = (std::abs(nOutDimension) > 1) ? (nSrcDimension - 1) / double(std::abs(nOutDimension) - 1) : 0.0;
|
|
|
|
tools::Long nSampleRange = std::max(tools::Long(0), nSrcDimension - 2);
|
|
|
|
for (tools::Long i = 0; i < nDstDimension; i++)
|
|
{
|
|
double fTemp = std::abs((nOffset + i) * fReverseScale);
|
|
|
|
pMap[i] = MinMax(nDstLocation + tools::Long(fTemp), 0, nSampleRange);
|
|
pMapOffset[i] = static_cast<tools::Long>((fTemp - pMap[i]) * 128.0);
|
|
}
|
|
}
|
|
|
|
public:
|
|
bool blendBitmap(
|
|
const BitmapWriteAccess* pDestination,
|
|
const BitmapReadAccess* pSource,
|
|
const BitmapReadAccess* pSourceAlpha,
|
|
const tools::Long nDstWidth,
|
|
const tools::Long nDstHeight)
|
|
{
|
|
if (pSource && pSourceAlpha && pDestination)
|
|
{
|
|
ScanlineFormat nSourceFormat = pSource->GetScanlineFormat();
|
|
ScanlineFormat nDestinationFormat = pDestination->GetScanlineFormat();
|
|
|
|
switch (nSourceFormat)
|
|
{
|
|
case ScanlineFormat::N24BitTcRgb:
|
|
case ScanlineFormat::N24BitTcBgr:
|
|
{
|
|
if ( (nSourceFormat == ScanlineFormat::N24BitTcBgr && nDestinationFormat == ScanlineFormat::N32BitTcBgra)
|
|
|| (nSourceFormat == ScanlineFormat::N24BitTcRgb && nDestinationFormat == ScanlineFormat::N32BitTcRgba))
|
|
{
|
|
blendBitmap24(pDestination, pSource, pSourceAlpha, nDstWidth, nDstHeight);
|
|
return true;
|
|
}
|
|
}
|
|
break;
|
|
default: break;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void blendBitmap24(
|
|
const BitmapWriteAccess* pDestination,
|
|
const BitmapReadAccess* pSource,
|
|
const BitmapReadAccess* pSourceAlpha,
|
|
const tools::Long nDstWidth,
|
|
const tools::Long nDstHeight)
|
|
{
|
|
Scanline pLine0, pLine1;
|
|
Scanline pLineAlpha0, pLineAlpha1;
|
|
Scanline pColorSample1, pColorSample2;
|
|
Scanline pDestScanline;
|
|
|
|
tools::Long nColor1Line1, nColor2Line1, nColor3Line1;
|
|
tools::Long nColor1Line2, nColor2Line2, nColor3Line2;
|
|
tools::Long nAlphaLine1, nAlphaLine2;
|
|
|
|
sal_uInt8 nColor1, nColor2, nColor3, nAlpha;
|
|
|
|
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<tools::Long[]> mpMapX;
|
|
std::unique_ptr<tools::Long[]> mpMapY;
|
|
|
|
TradScaleContext(tools::Rectangle const & aDstRect, tools::Rectangle const & aBitmapRect,
|
|
Size const & aOutSize, tools::Long nOffX, tools::Long nOffY)
|
|
|
|
: mpMapX(new tools::Long[aDstRect.GetWidth()])
|
|
, mpMapY(new tools::Long[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, tools::Long* 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);
|
|
|
|
Bitmap::ScopedReadAccess pBitmapReadAccess(const_cast<Bitmap&>(rBitmap));
|
|
AlphaMask::ScopedReadAccess pAlphaReadAccess(const_cast<AlphaMask&>(rAlpha));
|
|
|
|
DBG_ASSERT( pAlphaReadAccess->GetScanlineFormat() == ScanlineFormat::N8BitPal,
|
|
"OutputDevice::ImplDrawAlpha(): non-8bit alpha no longer supported!" );
|
|
|
|
// #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 = 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::DrawTransformBitmapExDirect(
|
|
const basegfx::B2DHomMatrix& aFullTransform,
|
|
const BitmapEx& rBitmapEx,
|
|
double fAlpha)
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
bool bDone = false;
|
|
|
|
// try to paint directly
|
|
const basegfx::B2DPoint aNull(aFullTransform * basegfx::B2DPoint(0.0, 0.0));
|
|
const basegfx::B2DPoint aTopX(aFullTransform * basegfx::B2DPoint(1.0, 0.0));
|
|
const basegfx::B2DPoint aTopY(aFullTransform * basegfx::B2DPoint(0.0, 1.0));
|
|
SalBitmap* pSalSrcBmp = rBitmapEx.GetBitmap().ImplGetSalBitmap().get();
|
|
Bitmap aAlphaBitmap;
|
|
|
|
if(rBitmapEx.IsAlpha())
|
|
{
|
|
aAlphaBitmap = rBitmapEx.GetAlpha();
|
|
}
|
|
else if (mpAlphaVDev)
|
|
{
|
|
aAlphaBitmap = AlphaMask(rBitmapEx.GetSizePixel());
|
|
aAlphaBitmap.Erase(COL_BLACK); // opaque
|
|
}
|
|
|
|
SalBitmap* pSalAlphaBmp = aAlphaBitmap.ImplGetSalBitmap().get();
|
|
|
|
bDone = mpGraphics->DrawTransformedBitmap(
|
|
aNull,
|
|
aTopX,
|
|
aTopY,
|
|
*pSalSrcBmp,
|
|
pSalAlphaBmp,
|
|
fAlpha,
|
|
*this);
|
|
|
|
if (mpAlphaVDev)
|
|
{
|
|
// Merge bitmap alpha to alpha device
|
|
AlphaMask aAlpha(rBitmapEx.GetSizePixel());
|
|
aAlpha.Erase( ( 1 - fAlpha ) * 255 );
|
|
mpAlphaVDev->DrawTransformBitmapExDirect(aFullTransform, BitmapEx(aAlpha, aAlphaBitmap));
|
|
}
|
|
|
|
return bDone;
|
|
};
|
|
|
|
bool OutputDevice::TransformAndReduceBitmapExToTargetRange(
|
|
const basegfx::B2DHomMatrix& aFullTransform,
|
|
basegfx::B2DRange &aVisibleRange,
|
|
double &fMaximumArea)
|
|
{
|
|
// limit TargetRange to existing pixels (if pixel device)
|
|
// first get discrete range of object
|
|
basegfx::B2DRange aFullPixelRange(aVisibleRange);
|
|
|
|
aFullPixelRange.transform(aFullTransform);
|
|
|
|
if(basegfx::fTools::equalZero(aFullPixelRange.getWidth()) || basegfx::fTools::equalZero(aFullPixelRange.getHeight()))
|
|
{
|
|
// object is outside of visible area
|
|
return false;
|
|
}
|
|
|
|
// now get discrete target pixels; start with OutDev pixel size and evtl.
|
|
// intersect with active clipping area
|
|
basegfx::B2DRange aOutPixel(
|
|
0.0,
|
|
0.0,
|
|
GetOutputSizePixel().Width(),
|
|
GetOutputSizePixel().Height());
|
|
|
|
if(IsClipRegion())
|
|
{
|
|
tools::Rectangle aRegionRectangle(GetActiveClipRegion().GetBoundRect());
|
|
|
|
// caution! Range from rectangle, one too much (!)
|
|
aRegionRectangle.AdjustRight(-1);
|
|
aRegionRectangle.AdjustBottom(-1);
|
|
aOutPixel.intersect( vcl::unotools::b2DRectangleFromRectangle(aRegionRectangle) );
|
|
}
|
|
|
|
if(aOutPixel.isEmpty())
|
|
{
|
|
// no active output area
|
|
return false;
|
|
}
|
|
|
|
// if aFullPixelRange is not completely inside of aOutPixel,
|
|
// reduction of target pixels is possible
|
|
basegfx::B2DRange aVisiblePixelRange(aFullPixelRange);
|
|
|
|
if(!aOutPixel.isInside(aFullPixelRange))
|
|
{
|
|
aVisiblePixelRange.intersect(aOutPixel);
|
|
|
|
if(aVisiblePixelRange.isEmpty())
|
|
{
|
|
// nothing in visible part, reduces to nothing
|
|
return false;
|
|
}
|
|
|
|
// aVisiblePixelRange contains the reduced output area in
|
|
// discrete coordinates. To make it useful everywhere, make it relative to
|
|
// the object range
|
|
basegfx::B2DHomMatrix aMakeVisibleRangeRelative;
|
|
|
|
aVisibleRange = aVisiblePixelRange;
|
|
aMakeVisibleRangeRelative.translate(
|
|
-aFullPixelRange.getMinX(),
|
|
-aFullPixelRange.getMinY());
|
|
aMakeVisibleRangeRelative.scale(
|
|
1.0 / aFullPixelRange.getWidth(),
|
|
1.0 / aFullPixelRange.getHeight());
|
|
aVisibleRange.transform(aMakeVisibleRangeRelative);
|
|
}
|
|
|
|
// for pixel devices, do *not* limit size, else OutputDevice::DrawDeviceAlphaBitmap
|
|
// will create another, badly scaled bitmap to do the job. Nonetheless, do a
|
|
// maximum clipping of something big (1600x1280x2). Add 1.0 to avoid rounding
|
|
// errors in rough estimations
|
|
const double fNewMaxArea(aVisiblePixelRange.getWidth() * aVisiblePixelRange.getHeight());
|
|
|
|
fMaximumArea = std::min(4096000.0, fNewMaxArea + 1.0);
|
|
|
|
return true;
|
|
}
|
|
|
|
// MM02 add some test class to get a simple timer-based output to be able
|
|
// to check if it gets faster - and how much. Uncomment next line or set
|
|
// DO_TIME_TEST for compile time if you want to use it
|
|
// #define DO_TIME_TEST
|
|
#ifdef DO_TIME_TEST
|
|
#include <tools/time.hxx>
|
|
struct LocalTimeTest
|
|
{
|
|
const sal_uInt64 nStartTime;
|
|
LocalTimeTest() : nStartTime(tools::Time::GetSystemTicks()) {}
|
|
~LocalTimeTest()
|
|
{
|
|
const sal_uInt64 nEndTime(tools::Time::GetSystemTicks());
|
|
const sal_uInt64 nDiffTime(nEndTime - nStartTime);
|
|
|
|
if(nDiffTime > 0)
|
|
{
|
|
OStringBuffer aOutput("Time: ");
|
|
OString aNumber(OString::number(nDiffTime));
|
|
aOutput.append(aNumber);
|
|
OSL_FAIL(aOutput.getStr());
|
|
}
|
|
}
|
|
};
|
|
#endif
|
|
|
|
void OutputDevice::DrawTransformedBitmapEx(
|
|
const basegfx::B2DHomMatrix& rTransformation,
|
|
const BitmapEx& rBitmapEx,
|
|
double fAlpha)
|
|
{
|
|
assert(!is_double_buffered_window());
|
|
|
|
if( ImplIsRecordLayout() )
|
|
return;
|
|
|
|
if(rBitmapEx.IsEmpty())
|
|
return;
|
|
|
|
if(rtl::math::approxEqual( fAlpha, 0.0 ))
|
|
return;
|
|
|
|
// MM02 compared to other public methods of OutputDevice
|
|
// this test was missing and led to zero-ptr-accesses
|
|
if ( !mpGraphics && !AcquireGraphics() )
|
|
return;
|
|
|
|
if ( mbInitClipRegion )
|
|
InitClipRegion();
|
|
|
|
const bool bMetafile(nullptr != mpMetaFile);
|
|
/*
|
|
tdf#135325 typically in these OutputDevice methods, for the in
|
|
record-to-metafile case the MetaFile is already written to before the
|
|
test against mbOutputClipped to determine that output to the current
|
|
device would result in no visual output. In this case the metafile is
|
|
written after the test, so we must continue past mbOutputClipped if
|
|
recording to a metafile. It's typical to record with a device of nominal
|
|
size and play back later against something of a totally different size.
|
|
*/
|
|
if (mbOutputClipped && !bMetafile)
|
|
return;
|
|
|
|
#ifdef DO_TIME_TEST
|
|
// MM02 start time test when some data (not for trivial stuff). Will
|
|
// trigger and show data when leaving this method by destructing helper
|
|
static const char* pEnableBitmapDrawTimerTimer(getenv("SAL_ENABLE_TIMER_BITMAPDRAW"));
|
|
static bool bUseTimer(nullptr != pEnableBitmapDrawTimerTimer);
|
|
std::unique_ptr<LocalTimeTest> aTimeTest(
|
|
bUseTimer && rBitmapEx.GetSizeBytes() > 10000
|
|
? new LocalTimeTest()
|
|
: nullptr);
|
|
#endif
|
|
|
|
BitmapEx bitmapEx = rBitmapEx;
|
|
|
|
const bool bInvert(RasterOp::Invert == meRasterOp);
|
|
const bool bBitmapChangedColor(mnDrawMode & (DrawModeFlags::BlackBitmap | DrawModeFlags::WhiteBitmap | DrawModeFlags::GrayBitmap ));
|
|
const bool bTryDirectPaint(!bInvert && !bBitmapChangedColor && !bMetafile);
|
|
// tdf#130768 CAUTION(!) using GetViewTransformation() is *not* enough here, it may
|
|
// be that mnOutOffX/mnOutOffY is used - see AOO bug 75163, mentioned at
|
|
// ImplGetDeviceTransformation declaration
|
|
basegfx::B2DHomMatrix aFullTransform(ImplGetDeviceTransformation() * rTransformation);
|
|
|
|
// First try to handle additional alpha blending, either directly, or modify the bitmap.
|
|
if(!rtl::math::approxEqual( fAlpha, 1.0 ))
|
|
{
|
|
if(bTryDirectPaint)
|
|
{
|
|
if(DrawTransformBitmapExDirect(aFullTransform, bitmapEx, fAlpha))
|
|
{
|
|
// we are done
|
|
return;
|
|
}
|
|
}
|
|
// Apply the alpha manually.
|
|
sal_uInt8 nColor( static_cast<sal_uInt8>( ::basegfx::fround( 255.0*(1.0 - fAlpha) + .5) ) );
|
|
AlphaMask aAlpha( bitmapEx.GetSizePixel(), &nColor );
|
|
if( bitmapEx.IsAlpha())
|
|
aAlpha.BlendWith( bitmapEx.GetAlpha());
|
|
bitmapEx = BitmapEx( bitmapEx.GetBitmap(), aAlpha );
|
|
}
|
|
if(rtl::math::approxEqual( fAlpha, 1.0 ))
|
|
fAlpha = 1.0; // avoid the need for approxEqual in backends
|
|
|
|
if(bTryDirectPaint && mpGraphics->HasFastDrawTransformedBitmap() && DrawTransformBitmapExDirect(aFullTransform, bitmapEx))
|
|
return;
|
|
|
|
// decompose matrix to check rotation and shear
|
|
basegfx::B2DVector aScale, aTranslate;
|
|
double fRotate, fShearX;
|
|
rTransformation.decompose(aScale, aTranslate, fRotate, fShearX);
|
|
const bool bRotated(!basegfx::fTools::equalZero(fRotate));
|
|
const bool bSheared(!basegfx::fTools::equalZero(fShearX));
|
|
const bool bMirroredX(basegfx::fTools::less(aScale.getX(), 0.0));
|
|
const bool bMirroredY(basegfx::fTools::less(aScale.getY(), 0.0));
|
|
|
|
if(!bRotated && !bSheared && !bMirroredX && !bMirroredY)
|
|
{
|
|
// with no rotation, shear or mirroring it can be mapped to DrawBitmapEx
|
|
// do *not* execute the mirroring here, it's done in the fallback
|
|
// #i124580# the correct DestSize needs to be calculated based on MaxXY values
|
|
Point aDestPt(basegfx::fround(aTranslate.getX()), basegfx::fround(aTranslate.getY()));
|
|
const Size aDestSize(
|
|
basegfx::fround(aScale.getX() + aTranslate.getX()) - aDestPt.X(),
|
|
basegfx::fround(aScale.getY() + aTranslate.getY()) - aDestPt.Y());
|
|
const Point aOrigin = GetMapMode().GetOrigin();
|
|
if (!bMetafile && comphelper::LibreOfficeKit::isActive() && GetMapMode().GetMapUnit() != MapUnit::MapPixel)
|
|
{
|
|
aDestPt.Move(aOrigin.getX(), aOrigin.getY());
|
|
EnableMapMode(false);
|
|
}
|
|
|
|
DrawBitmapEx(aDestPt, aDestSize, bitmapEx);
|
|
if (!bMetafile && comphelper::LibreOfficeKit::isActive() && GetMapMode().GetMapUnit() != MapUnit::MapPixel)
|
|
{
|
|
EnableMapMode();
|
|
aDestPt.Move(-aOrigin.getX(), -aOrigin.getY());
|
|
}
|
|
return;
|
|
}
|
|
|
|
if(bTryDirectPaint && DrawTransformBitmapExDirect(aFullTransform, bitmapEx))
|
|
{
|
|
// we are done
|
|
return;
|
|
}
|
|
|
|
// take the fallback when no rotate and shear, but mirror (else we would have done this above)
|
|
if(!bRotated && !bSheared)
|
|
{
|
|
// with no rotation or shear it can be mapped to DrawBitmapEx
|
|
// do *not* execute the mirroring here, it's done in the fallback
|
|
// #i124580# the correct DestSize needs to be calculated based on MaxXY values
|
|
const Point aDestPt(basegfx::fround(aTranslate.getX()), basegfx::fround(aTranslate.getY()));
|
|
const Size aDestSize(
|
|
basegfx::fround(aScale.getX() + aTranslate.getX()) - aDestPt.X(),
|
|
basegfx::fround(aScale.getY() + aTranslate.getY()) - aDestPt.Y());
|
|
|
|
DrawBitmapEx(aDestPt, aDestSize, bitmapEx);
|
|
return;
|
|
}
|
|
|
|
// at this point we are either sheared or rotated or both
|
|
assert(bSheared || bRotated);
|
|
|
|
// fallback; create transformed bitmap the hard way (back-transform
|
|
// the pixels) and paint
|
|
basegfx::B2DRange aVisibleRange(0.0, 0.0, 1.0, 1.0);
|
|
|
|
// limit maximum area to something looking good for non-pixel-based targets (metafile, printer)
|
|
// by using a fixed minimum (allow at least, but no need to utilize) for good smoothing and an area
|
|
// dependent of original size for good quality when e.g. rotated/sheared. Still, limit to a maximum
|
|
// to avoid crashes/resource problems (ca. 1500x3000 here)
|
|
const Size& rOriginalSizePixel(bitmapEx.GetSizePixel());
|
|
const double fOrigArea(rOriginalSizePixel.Width() * rOriginalSizePixel.Height() * 0.5);
|
|
const double fOrigAreaScaled(fOrigArea * 1.44);
|
|
double fMaximumArea(std::clamp(fOrigAreaScaled, 1000000.0, 4500000.0));
|
|
|
|
if(!bMetafile)
|
|
{
|
|
if ( !TransformAndReduceBitmapExToTargetRange( aFullTransform, aVisibleRange, fMaximumArea ) )
|
|
return;
|
|
}
|
|
|
|
if(aVisibleRange.isEmpty())
|
|
return;
|
|
|
|
BitmapEx aTransformed(bitmapEx);
|
|
|
|
// #122923# when the result needs an alpha channel due to being rotated or sheared
|
|
// and thus uncovering areas, add these channels so that the own transformer (used
|
|
// in getTransformed) also creates a transformed alpha channel
|
|
if(!aTransformed.IsAlpha() && (bSheared || bRotated))
|
|
{
|
|
// parts will be uncovered, extend aTransformed with a mask bitmap
|
|
const Bitmap aContent(aTransformed.GetBitmap());
|
|
|
|
AlphaMask aMaskBmp(aContent.GetSizePixel());
|
|
aMaskBmp.Erase(0);
|
|
|
|
aTransformed = BitmapEx(aContent, aMaskBmp);
|
|
}
|
|
|
|
// Remove scaling from aFulltransform: we transform due to shearing or rotation, scaling
|
|
// will happen according to aDestSize.
|
|
basegfx::B2DVector aFullScale, aFullTranslate;
|
|
double fFullRotate, fFullShearX;
|
|
aFullTransform.decompose(aFullScale, aFullTranslate, fFullRotate, fFullShearX);
|
|
// Require positive scaling, negative scaling would loose horizontal or vertical flip.
|
|
if (aFullScale.getX() > 0 && aFullScale.getY() > 0)
|
|
{
|
|
basegfx::B2DHomMatrix aTransform = basegfx::utils::createScaleB2DHomMatrix(
|
|
rOriginalSizePixel.getWidth() / aFullScale.getX(),
|
|
rOriginalSizePixel.getHeight() / aFullScale.getY());
|
|
aFullTransform *= aTransform;
|
|
}
|
|
|
|
double fSourceRatio = 1.0;
|
|
if (rOriginalSizePixel.getHeight() != 0)
|
|
{
|
|
fSourceRatio = rOriginalSizePixel.getWidth() / rOriginalSizePixel.getHeight();
|
|
}
|
|
double fTargetRatio = 1.0;
|
|
if (aFullScale.getY() != 0)
|
|
{
|
|
fTargetRatio = aFullScale.getX() / aFullScale.getY();
|
|
}
|
|
bool bAspectRatioKept = rtl::math::approxEqual(fSourceRatio, fTargetRatio);
|
|
if (bSheared || !bAspectRatioKept)
|
|
{
|
|
// Not only rotation, or scaling does not keep aspect ratio.
|
|
aTransformed = aTransformed.getTransformed(
|
|
aFullTransform,
|
|
aVisibleRange,
|
|
fMaximumArea);
|
|
}
|
|
else
|
|
{
|
|
// Just rotation, can do that directly.
|
|
fFullRotate = fmod(fFullRotate * -1, F_2PI);
|
|
if (fFullRotate < 0)
|
|
{
|
|
fFullRotate += F_2PI;
|
|
}
|
|
Degree10 nAngle10(basegfx::fround(basegfx::rad2deg(fFullRotate) * 10));
|
|
aTransformed.Rotate(nAngle10, COL_TRANSPARENT);
|
|
}
|
|
basegfx::B2DRange aTargetRange(0.0, 0.0, 1.0, 1.0);
|
|
|
|
// get logic object target range
|
|
aTargetRange.transform(rTransformation);
|
|
|
|
// get from unified/relative VisibleRange to logoc one
|
|
aVisibleRange.transform(
|
|
basegfx::utils::createScaleTranslateB2DHomMatrix(
|
|
aTargetRange.getRange(),
|
|
aTargetRange.getMinimum()));
|
|
|
|
// extract point and size; do not remove size, the bitmap may have been prepared reduced by purpose
|
|
// #i124580# the correct DestSize needs to be calculated based on MaxXY values
|
|
const Point aDestPt(basegfx::fround(aVisibleRange.getMinX()), basegfx::fround(aVisibleRange.getMinY()));
|
|
const Size aDestSize(
|
|
basegfx::fround(aVisibleRange.getMaxX()) - aDestPt.X(),
|
|
basegfx::fround(aVisibleRange.getMaxY()) - aDestPt.Y());
|
|
|
|
DrawBitmapEx(aDestPt, aDestSize, aTransformed);
|
|
}
|
|
|
|
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 );
|
|
|
|
// vcl stores transparency, not alpha - invert it
|
|
const sal_uInt8 nSrcAlpha = 255 - pA->GetPixelIndex( nMapY, nMapX );
|
|
const sal_uInt8 nDstAlpha = 255 - 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 tools::Long* pMapX,
|
|
const tools::Long* 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 );
|
|
Bitmap::ScopedReadAccess 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[ 255-nResAlpha ] + nD ) >> 16 ] +
|
|
nVCLGLut[ ( nVCLLut[ 255-nResAlpha ] + nD ) >> 16 ] +
|
|
nVCLBLut[ ( nVCLLut[ 255-nResAlpha ] + nD ) >> 16 ] ) );
|
|
pAlphaW->SetPixelOnData( pScanlineAlpha, nX, aIndex );
|
|
}
|
|
}
|
|
}
|
|
pB.reset();
|
|
pW.reset();
|
|
res = 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(255L-nResAlpha, 255L-nResAlpha, 255L-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 tools::Long* pMapX,
|
|
const tools::Long* pMapY )
|
|
{
|
|
BitmapColor aDstCol;
|
|
Bitmap res;
|
|
int nX, nY;
|
|
|
|
if( GetBitCount() <= 8 )
|
|
{
|
|
Bitmap aDither(aBmp.GetSizePixel(), vcl::PixelFormat::N8_BPP);
|
|
BitmapColor aIndex( 0 );
|
|
Bitmap::ScopedReadAccess pB(aBmp);
|
|
BitmapScopedWriteAccess pW(aDither);
|
|
|
|
if( pB && pP && pA && pW )
|
|
{
|
|
int nOutY;
|
|
|
|
for( 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;
|
|
int nOutX;
|
|
|
|
Scanline pScanline = pW->GetScanline(nY);
|
|
Scanline pScanlineAlpha = pA->GetScanline(nMapY);
|
|
for( 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 ) ];
|
|
|
|
aDstCol = pB->GetColor( nY, nX );
|
|
aDstCol.Merge( pP->GetColor( nMapY, nMapX ), pA->GetIndexFromData( pScanlineAlpha, nMapX ) );
|
|
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 );
|
|
}
|
|
}
|
|
}
|
|
|
|
pB.reset();
|
|
pW.reset();
|
|
res = aDither;
|
|
}
|
|
else
|
|
{
|
|
BitmapScopedWriteAccess pB(aBmp);
|
|
|
|
bool bFastBlend = false;
|
|
if( pP && pA && pB && !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( pP && pA && pB && !bFastBlend )
|
|
{
|
|
switch( pP->GetScanlineFormat() )
|
|
{
|
|
case ScanlineFormat::N8BitPal:
|
|
{
|
|
for( nY = 0; nY < nDstHeight; nY++ )
|
|
{
|
|
tools::Long nMapY = pMapY[ nY ];
|
|
if ( bVMirr )
|
|
{
|
|
nMapY = aBmpRect.Bottom() - nMapY;
|
|
}
|
|
Scanline pPScan = pP->GetScanline( nMapY );
|
|
Scanline pAScan = pA->GetScanline( nMapY );
|
|
Scanline pBScan = pB->GetScanline( nY );
|
|
|
|
for( nX = 0; nX < nDstWidth; nX++ )
|
|
{
|
|
tools::Long nMapX = pMapX[ nX ];
|
|
|
|
if ( bHMirr )
|
|
{
|
|
nMapX = aBmpRect.Right() - nMapX;
|
|
}
|
|
aDstCol = pB->GetPixelFromData( pBScan, nX );
|
|
aDstCol.Merge( pP->GetPaletteColor( pPScan[ nMapX ] ), pAScan[ nMapX ] );
|
|
pB->SetPixelOnData( pBScan, nX, aDstCol );
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
{
|
|
|
|
for( 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( nX = 0; nX < nDstWidth; nX++ )
|
|
{
|
|
tools::Long nMapX = pMapX[ nX ];
|
|
|
|
if ( bHMirr )
|
|
{
|
|
nMapX = aBmpRect.Right() - nMapX;
|
|
}
|
|
aDstCol = pB->GetPixelFromData( pBScan, nX );
|
|
aDstCol.Merge( pP->GetColor( nMapY, nMapX ), pAScan[ nMapX ] );
|
|
pB->SetPixelOnData( pBScan, nX, aDstCol );
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
pB.reset();
|
|
res = aBmp;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|