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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <vcl/bitmap.hxx>
#include <vcl/bitmapex.hxx>
#include <vcl/bmpacc.hxx>
#include <vcl/opengl/OpenGLHelper.hxx>
#include <vcl/outdev.hxx>
#include <vcl/virdev.hxx>
#include <vcl/image.hxx>
#include <bmpfast.hxx>
#include <salgdi.hxx>
#include <impbmp.hxx>
#include <image.h>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <boost/scoped_array.hpp>
void OutputDevice::DrawBitmap( const Point& rDestPt, const Bitmap& rBitmap )
{
const Size aSizePix( rBitmap.GetSizePixel() );
DrawBitmap( rDestPt, PixelToLogic( aSizePix ), Point(), aSizePix, rBitmap, META_BMP_ACTION );
}
void OutputDevice::DrawBitmap( const Point& rDestPt, const Size& rDestSize, const Bitmap& rBitmap )
{
DrawBitmap( rDestPt, rDestSize, Point(), rBitmap.GetSizePixel(), rBitmap, META_BMPSCALE_ACTION );
}
void OutputDevice::DrawBitmap( const Point& rDestPt, const Size& rDestSize,
const Point& rSrcPtPixel, const Size& rSrcSizePixel,
const Bitmap& rBitmap, const sal_uLong nAction )
{
if( ImplIsRecordLayout() )
return;
if ( ( mnDrawMode & DRAWMODE_NOBITMAP ) )
{
return;
}
if ( ROP_INVERT == meRasterOp )
{
DrawRect( Rectangle( rDestPt, rDestSize ) );
return;
}
Bitmap aBmp( rBitmap );
if ( mnDrawMode & ( DRAWMODE_BLACKBITMAP | DRAWMODE_WHITEBITMAP |
DRAWMODE_GRAYBITMAP | DRAWMODE_GHOSTEDBITMAP ) )
{
if ( mnDrawMode & ( DRAWMODE_BLACKBITMAP | DRAWMODE_WHITEBITMAP ) )
{
sal_uInt8 cCmpVal;
if ( mnDrawMode & DRAWMODE_BLACKBITMAP )
cCmpVal = ( mnDrawMode & DRAWMODE_GHOSTEDBITMAP ) ? 0x80 : 0;
else
cCmpVal = 255;
Color aCol( cCmpVal, cCmpVal, cCmpVal );
Push( PushFlags::LINECOLOR | PushFlags::FILLCOLOR );
SetLineColor( aCol );
SetFillColor( aCol );
DrawRect( Rectangle( rDestPt, rDestSize ) );
Pop();
return;
}
else if( !!aBmp )
{
if ( mnDrawMode & DRAWMODE_GRAYBITMAP )
aBmp.Convert( BMP_CONVERSION_8BIT_GREYS );
if ( mnDrawMode & DRAWMODE_GHOSTEDBITMAP )
aBmp.Convert( BMP_CONVERSION_GHOSTED );
}
}
if ( mpMetaFile )
{
switch( nAction )
{
case( META_BMP_ACTION ):
mpMetaFile->AddAction( new MetaBmpAction( rDestPt, aBmp ) );
break;
case( META_BMPSCALE_ACTION ):
mpMetaFile->AddAction( new MetaBmpScaleAction( rDestPt, rDestSize, aBmp ) );
break;
case( META_BMPSCALEPART_ACTION ):
mpMetaFile->AddAction( new MetaBmpScalePartAction(
rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, aBmp ) );
break;
}
}
if ( !IsDeviceOutputNecessary() )
return;
if ( !mpGraphics )
if ( !AcquireGraphics() )
return;
if ( mbInitClipRegion )
InitClipRegion();
if ( mbOutputClipped )
return;
if( !aBmp.IsEmpty() )
{
SalTwoRect aPosAry(rSrcPtPixel.X(), rSrcPtPixel.Y(), rSrcSizePixel.Width(), rSrcSizePixel.Height(),
ImplLogicXToDevicePixel(rDestPt.X()), ImplLogicYToDevicePixel(rDestPt.Y()),
ImplLogicWidthToDevicePixel(rDestSize.Width()),
ImplLogicHeightToDevicePixel(rDestSize.Height()));
if ( aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight )
{
const sal_uLong nMirrFlags = AdjustTwoRect( aPosAry, aBmp.GetSizePixel() );
if ( nMirrFlags )
aBmp.Mirror( nMirrFlags );
if ( aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight )
{
if ( nAction == META_BMPSCALE_ACTION )
ScaleBitmap (aBmp, aPosAry);
mpGraphics->DrawBitmap( aPosAry, *aBmp.ImplGetImpBitmap()->ImplGetSalBitmap(), this );
}
}
}
if( mpAlphaVDev )
{
// #i32109#: Make bitmap area opaque
mpAlphaVDev->ImplFillOpaqueRectangle( Rectangle(rDestPt, rDestSize) );
}
}
Bitmap OutputDevice::GetDownsampledBitmap( const Size& rDstSz,
const Point& rSrcPt, const Size& rSrcSz,
const Bitmap& rBmp, long nMaxBmpDPIX, long nMaxBmpDPIY )
{
Bitmap aBmp( rBmp );
if( !aBmp.IsEmpty() )
{
Point aPoint;
const Rectangle aBmpRect( aPoint, aBmp.GetSizePixel() );
Rectangle aSrcRect( rSrcPt, rSrcSz );
// do cropping if necessary
if( aSrcRect.Intersection( aBmpRect ) != aBmpRect )
{
if( !aSrcRect.IsEmpty() )
aBmp.Crop( aSrcRect );
else
aBmp.SetEmpty();
}
if( !aBmp.IsEmpty() )
{
// do downsampling if necessary
Size aDstSizeTwip( PixelToLogic( LogicToPixel( rDstSz ), MAP_TWIP ) );
// #103209# Normalize size (mirroring has to happen outside of this method)
aDstSizeTwip = Size( labs(aDstSizeTwip.Width()), labs(aDstSizeTwip.Height()) );
const Size aBmpSize( aBmp.GetSizePixel() );
const double fBmpPixelX = aBmpSize.Width();
const double fBmpPixelY = aBmpSize.Height();
const double fMaxPixelX = aDstSizeTwip.Width() * nMaxBmpDPIX / 1440.0;
const double fMaxPixelY = aDstSizeTwip.Height() * nMaxBmpDPIY / 1440.0;
// check, if the bitmap DPI exceeds the maximum DPI (allow 4 pixel rounding tolerance)
if( ( ( fBmpPixelX > ( fMaxPixelX + 4 ) ) ||
( fBmpPixelY > ( fMaxPixelY + 4 ) ) ) &&
( fBmpPixelY > 0.0 ) && ( fMaxPixelY > 0.0 ) )
{
// do scaling
Size aNewBmpSize;
const double fBmpWH = fBmpPixelX / fBmpPixelY;
const double fMaxWH = fMaxPixelX / fMaxPixelY;
if( fBmpWH < fMaxWH )
{
aNewBmpSize.Width() = FRound( fMaxPixelY * fBmpWH );
aNewBmpSize.Height() = FRound( fMaxPixelY );
}
else if( fBmpWH > 0.0 )
{
aNewBmpSize.Width() = FRound( fMaxPixelX );
aNewBmpSize.Height() = FRound( fMaxPixelX / fBmpWH);
}
if( aNewBmpSize.Width() && aNewBmpSize.Height() )
aBmp.Scale( aNewBmpSize );
else
aBmp.SetEmpty();
}
}
}
return aBmp;
}
void OutputDevice::DrawBitmapEx( const Point& rDestPt,
const BitmapEx& rBitmapEx )
{
if( ImplIsRecordLayout() )
return;
if( TRANSPARENT_NONE == rBitmapEx.GetTransparentType() )
{
DrawBitmap( rDestPt, rBitmapEx.GetBitmap() );
}
else
{
const Size aSizePix( rBitmapEx.GetSizePixel() );
DrawBitmapEx( rDestPt, PixelToLogic( aSizePix ), Point(), aSizePix, rBitmapEx, META_BMPEX_ACTION );
}
}
void OutputDevice::DrawBitmapEx( const Point& rDestPt, const Size& rDestSize,
const BitmapEx& rBitmapEx )
{
if( ImplIsRecordLayout() )
return;
if ( TRANSPARENT_NONE == rBitmapEx.GetTransparentType() )
{
DrawBitmap( rDestPt, rDestSize, rBitmapEx.GetBitmap() );
}
else
{
DrawBitmapEx( rDestPt, rDestSize, Point(), rBitmapEx.GetSizePixel(), rBitmapEx, META_BMPEXSCALE_ACTION );
}
}
void OutputDevice::DrawBitmapEx( const Point& rDestPt, const Size& rDestSize,
const Point& rSrcPtPixel, const Size& rSrcSizePixel,
const BitmapEx& rBitmapEx, const sal_uLong nAction )
{
if( ImplIsRecordLayout() )
return;
if( TRANSPARENT_NONE == rBitmapEx.GetTransparentType() )
{
DrawBitmap( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, rBitmapEx.GetBitmap() );
}
else
{
if ( mnDrawMode & DRAWMODE_NOBITMAP )
return;
if ( ROP_INVERT == meRasterOp )
{
DrawRect( Rectangle( rDestPt, rDestSize ) );
return;
}
BitmapEx aBmpEx( rBitmapEx );
if ( mnDrawMode & ( DRAWMODE_BLACKBITMAP | DRAWMODE_WHITEBITMAP |
DRAWMODE_GRAYBITMAP | DRAWMODE_GHOSTEDBITMAP ) )
{
if ( mnDrawMode & ( DRAWMODE_BLACKBITMAP | DRAWMODE_WHITEBITMAP ) )
{
Bitmap aColorBmp( aBmpEx.GetSizePixel(), ( mnDrawMode & DRAWMODE_GHOSTEDBITMAP ) ? 4 : 1 );
sal_uInt8 cCmpVal;
if ( mnDrawMode & DRAWMODE_BLACKBITMAP )
cCmpVal = ( mnDrawMode & DRAWMODE_GHOSTEDBITMAP ) ? 0x80 : 0;
else
cCmpVal = 255;
aColorBmp.Erase( Color( cCmpVal, cCmpVal, cCmpVal ) );
if( aBmpEx.IsAlpha() )
{
// Create one-bit mask out of alpha channel, by
// thresholding it at alpha=0.5. As
// DRAWMODE_BLACK/WHITEBITMAP requires monochrome
// output, having alpha-induced grey levels is not
// acceptable.
Bitmap aMask( aBmpEx.GetAlpha().GetBitmap() );
aMask.MakeMono( 129 );
aBmpEx = BitmapEx( aColorBmp, aMask );
}
else
{
aBmpEx = BitmapEx( aColorBmp, aBmpEx.GetMask() );
}
}
else if( !!aBmpEx )
{
if ( mnDrawMode & DRAWMODE_GRAYBITMAP )
aBmpEx.Convert( BMP_CONVERSION_8BIT_GREYS );
if ( mnDrawMode & DRAWMODE_GHOSTEDBITMAP )
aBmpEx.Convert( BMP_CONVERSION_GHOSTED );
}
}
if ( mpMetaFile )
{
switch( nAction )
{
case( META_BMPEX_ACTION ):
mpMetaFile->AddAction( new MetaBmpExAction( rDestPt, aBmpEx ) );
break;
case( META_BMPEXSCALE_ACTION ):
mpMetaFile->AddAction( new MetaBmpExScaleAction( rDestPt, rDestSize, aBmpEx ) );
break;
case( META_BMPEXSCALEPART_ACTION ):
mpMetaFile->AddAction( new MetaBmpExScalePartAction( rDestPt, rDestSize,
rSrcPtPixel, rSrcSizePixel, aBmpEx ) );
break;
}
}
if ( !IsDeviceOutputNecessary() )
return;
if ( !mpGraphics )
if ( !AcquireGraphics() )
return;
if ( mbInitClipRegion )
InitClipRegion();
if ( mbOutputClipped )
return;
DrawDeviceBitmap( rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel, aBmpEx );
}
}
Bitmap OutputDevice::GetBitmap( const Point& rSrcPt, const Size& rSize ) const
{
Bitmap aBmp;
long nX = ImplLogicXToDevicePixel( rSrcPt.X() );
long nY = ImplLogicYToDevicePixel( rSrcPt.Y() );
long nWidth = ImplLogicWidthToDevicePixel( rSize.Width() );
long nHeight = ImplLogicHeightToDevicePixel( rSize.Height() );
if ( mpGraphics || AcquireGraphics() )
{
if ( nWidth > 0 && nHeight > 0 && nX <= (mnOutWidth + mnOutOffX) && nY <= (mnOutHeight + mnOutOffY))
{
Rectangle aRect( Point( nX, nY ), Size( nWidth, nHeight ) );
bool bClipped = false;
// X-Coordinate outside of draw area?
if ( nX < mnOutOffX )
{
nWidth -= ( mnOutOffX - nX );
nX = mnOutOffX;
bClipped = true;
}
// Y-Coordinate outside of draw area?
if ( nY < mnOutOffY )
{
nHeight -= ( mnOutOffY - nY );
nY = mnOutOffY;
bClipped = true;
}
// Width outside of draw area?
if ( (nWidth + nX) > (mnOutWidth + mnOutOffX) )
{
nWidth = mnOutOffX + mnOutWidth - nX;
bClipped = true;
}
// Height outside of draw area?
if ( (nHeight + nY) > (mnOutHeight + mnOutOffY) )
{
nHeight = mnOutOffY + mnOutHeight - nY;
bClipped = true;
}
if ( bClipped )
{
// If the visible part has been clipped, we have to create a
// Bitmap with the correct size in which we copy the clipped
// Bitmap to the correct position.
VirtualDevice aVDev( *this );
if ( aVDev.SetOutputSizePixel( aRect.GetSize() ) )
{
if ( ((OutputDevice*)&aVDev)->mpGraphics || ((OutputDevice*)&aVDev)->AcquireGraphics() )
{
if ( (nWidth > 0) && (nHeight > 0) )
{
SalTwoRect aPosAry(nX, nY, nWidth, nHeight,
(aRect.Left() < mnOutOffX) ? (mnOutOffX - aRect.Left()) : 0L,
(aRect.Top() < mnOutOffY) ? (mnOutOffY - aRect.Top()) : 0L,
nWidth, nHeight);
(((OutputDevice*)&aVDev)->mpGraphics)->CopyBits( aPosAry, mpGraphics, this, this );
}
else
{
OSL_ENSURE(false, "CopyBits with negative width or height (!)");
}
aBmp = aVDev.GetBitmap( Point(), aVDev.GetOutputSizePixel() );
}
else
bClipped = false;
}
else
bClipped = false;
}
if ( !bClipped )
{
SalBitmap* pSalBmp = mpGraphics->GetBitmap( nX, nY, nWidth, nHeight, this );
if( pSalBmp )
{
ImpBitmap* pImpBmp = new ImpBitmap(pSalBmp);
aBmp.ImplSetImpBitmap( pImpBmp );
}
}
}
}
return aBmp;
}
BitmapEx OutputDevice::GetBitmapEx( const Point& rSrcPt, const Size& rSize ) const
{
// #110958# Extract alpha value from VDev, if any
if( mpAlphaVDev )
{
Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( rSrcPt, rSize ) );
// ensure 8 bit alpha
if( aAlphaBitmap.GetBitCount() > 8 )
aAlphaBitmap.Convert( BMP_CONVERSION_8BIT_GREYS );
return BitmapEx(GetBitmap( rSrcPt, rSize ), AlphaMask( aAlphaBitmap ) );
}
else
return GetBitmap( rSrcPt, rSize );
}
void OutputDevice::DrawDeviceBitmap( const Point& rDestPt, const Size& rDestSize,
const Point& rSrcPtPixel, const Size& rSrcSizePixel,
BitmapEx& rBitmapEx )
{
if (rBitmapEx.IsAlpha())
{
DrawDeviceAlphaBitmap(rBitmapEx.GetBitmap(), rBitmapEx.GetAlpha(), rDestPt, rDestSize, rSrcPtPixel, rSrcSizePixel);
}
else if (!!rBitmapEx)
{
SalTwoRect aPosAry(rSrcPtPixel.X(), rSrcPtPixel.Y(), rSrcSizePixel.Width(), rSrcSizePixel.Height(),
ImplLogicXToDevicePixel(rDestPt.X()), ImplLogicYToDevicePixel(rDestPt.Y()),
ImplLogicWidthToDevicePixel(rDestSize.Width()),
ImplLogicHeightToDevicePixel(rDestSize.Height()));
const sal_uLong nMirrFlags = AdjustTwoRect(aPosAry, rBitmapEx.GetSizePixel());
if (aPosAry.mnSrcWidth && aPosAry.mnSrcHeight && aPosAry.mnDestWidth && aPosAry.mnDestHeight)
{
if (nMirrFlags)
rBitmapEx.Mirror(nMirrFlags);
const SalBitmap* pSalSrcBmp = rBitmapEx.ImplGetBitmapImpBitmap()->ImplGetSalBitmap();
const ImpBitmap* pMaskBmp = rBitmapEx.ImplGetMaskImpBitmap();
if (pMaskBmp)
{
SalBitmap* pSalAlphaBmp = pMaskBmp->ImplGetSalBitmap();
bool bTryDirectPaint(pSalSrcBmp && pSalAlphaBmp);
if (bTryDirectPaint && mpGraphics->DrawAlphaBitmap(aPosAry, *pSalSrcBmp, *pSalAlphaBmp, this))
{
// tried to paint as alpha directly. If tis 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
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(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,
*pMaskBmp->ImplGetSalBitmap(),
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.GetMask(),
rBitmapEx.GetMask()));
}
else
{
mpGraphics->DrawBitmap(aPosAry, *pSalSrcBmp, this);
if (mpAlphaVDev)
{
// #i32109#: Make bitmap area opaque
mpAlphaVDev->ImplFillOpaqueRectangle( Rectangle(rDestPt, rDestSize) );
}
}
}
}
}
void OutputDevice::DrawDeviceAlphaBitmap( const Bitmap& rBmp, const AlphaMask& rAlpha,
const Point& rDestPt, const Size& rDestSize,
const Point& rSrcPtPixel, const Size& rSrcSizePixel )
{
Point aOutPt(LogicToPixel(rDestPt));
Size aOutSz(LogicToPixel(rDestSize));
Rectangle aDstRect(Point(), GetOutputSizePixel());
const bool bHMirr = aOutSz.Width() < 0;
const bool bVMirr = aOutSz.Height() < 0;
ClipToPaintRegion(aDstRect);
if (bHMirr)
{
aOutSz.Width() = -aOutSz.Width();
aOutPt.X() -= aOutSz.Width() - 1L;
}
if (bVMirr)
{
aOutSz.Height() = -aOutSz.Height();
aOutPt.Y() -= aOutSz.Height() - 1L;
}
if (!aDstRect.Intersection(Rectangle(aOutPt, aOutSz)).IsEmpty())
{
static const char* pDisableNative = getenv( "SAL_DISABLE_NATIVE_ALPHA");
// #i83087# Naturally, system alpha blending cannot work with
// separate alpha VDev
bool bTryDirectPaint(!pDisableNative && !bHMirr && !bVMirr);
if (bTryDirectPaint)
{
Point aRelPt = aOutPt + Point(mnOutOffX, mnOutOffY);
SalTwoRect aTR(
rSrcPtPixel.X(), rSrcPtPixel.Y(),
rSrcSizePixel.Width(), rSrcSizePixel.Height(),
aRelPt.X(), aRelPt.Y(),
aOutSz.Width(), aOutSz.Height());
SalBitmap* pSalSrcBmp = rBmp.ImplGetImpBitmap()->ImplGetSalBitmap();
SalBitmap* pSalAlphaBmp = rAlpha.ImplGetImpBitmap()->ImplGetSalBitmap();
// try the blen the alpha bitmap with the alpha virtual device
if (mpAlphaVDev)
{
Bitmap aAlphaBitmap( mpAlphaVDev->GetBitmap( aRelPt, aOutSz ) );
SalBitmap* pSalAlphaBmp2 = aAlphaBitmap.ImplGetImpBitmap()->ImplGetSalBitmap();
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 OpenGL never reaches this slow code path
assert(!OpenGLHelper::isVCLOpenGLEnabled());
Rectangle aBmpRect(Point(), rBmp.GetSizePixel());
if (!aBmpRect.Intersection(Rectangle(rSrcPtPixel, rSrcSizePixel)).IsEmpty())
{
DrawDeviceAlphaBitmapSlowPath(rBmp, rAlpha, aDstRect, aBmpRect, aOutSz, aOutPt);
}
}
}
namespace
{
struct ScaleContext
{
boost::scoped_array<long> mpMapX;
boost::scoped_array<long> mpMapY;
boost::scoped_array<long> mpMapXOffset;
boost::scoped_array<long> mpMapYOffset;
ScaleContext(Rectangle& aDstRect, Rectangle& aBitmapRect,
Size& aOutSize, long nOffX, long nOffY)
: mpMapX(new long[aDstRect.GetWidth()])
, mpMapY(new long[aDstRect.GetHeight()])
, mpMapXOffset(new long[aDstRect.GetWidth()])
, mpMapYOffset(new long[aDstRect.GetHeight()])
{
const long nSrcWidth = aBitmapRect.GetWidth();
const 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(), mpMapXOffset.get());
generateSimpleMap(
nSrcHeight, aDstRect.GetHeight(), aBitmapRect.Top(),
aOutSize.Height(), nOffY, bVMirr, mpMapY.get(), mpMapYOffset.get());
}
private:
static void generateSimpleMap(long nSrcDimension, long nDstDimension, long nDstLocation,
long nOutDimention, long nOffset, bool bMirror, long* pMap, long* pMapOffset)
{
long nMirrorOffset = 0;
if (bMirror)
nMirrorOffset = (nDstLocation << 1) + nSrcDimension - 1L;
const double fReverseScale = (nOutDimention > 1L) ? (nSrcDimension - 1L) / double(nOutDimention - 1L) : 0.0;
long nSampleRange = std::max(0L, nSrcDimension - 2L);
for (long i = 0L; i < nDstDimension; i++)
{
double fTemp = ((nOffset + i) * fReverseScale);
if (bMirror)
fTemp = nMirrorOffset - fTemp - 1L;
pMap[i] = MinMax(nDstLocation + long(fTemp), 0, nSampleRange);
pMapOffset[i] = (long) ((fTemp - pMap[i]) * 128.0);
}
}
public:
bool blendBitmap(
const BitmapWriteAccess* pDestination,
const BitmapReadAccess* pSource,
const BitmapReadAccess* pSourceAlpha,
const long nDstWidth,
const long nDstHeight)
{
if (pSource && pSourceAlpha && pDestination)
{
unsigned long nSourceFormat = pSource->GetScanlineFormat();
unsigned long nDestinationFormat = pDestination->GetScanlineFormat();
switch (nSourceFormat)
{
case BMP_FORMAT_24BIT_TC_RGB:
case BMP_FORMAT_24BIT_TC_BGR:
{
if ( (nSourceFormat == BMP_FORMAT_24BIT_TC_BGR && nDestinationFormat == BMP_FORMAT_32BIT_TC_BGRA)
|| (nSourceFormat == BMP_FORMAT_24BIT_TC_RGB && nDestinationFormat == BMP_FORMAT_32BIT_TC_RGBA))
{
blendBitmap24(pDestination, pSource, pSourceAlpha, nDstWidth, nDstHeight);
return true;
}
}
}
}
return false;
}
void blendBitmap24(
const BitmapWriteAccess* pDestination,
const BitmapReadAccess* pSource,
const BitmapReadAccess* pSourceAlpha,
const long nDstWidth,
const long nDstHeight)
{
Scanline pLine0, pLine1;
Scanline pLineAlpha0, pLineAlpha1;
Scanline pColorSample1, pColorSample2;
Scanline pDestScanline;
long nColor1Line1, nColor2Line1, nColor3Line1;
long nColor1Line2, nColor2Line2, nColor3Line2;
long nAlphaLine1, nAlphaLine2;
sal_uInt8 nColor1, nColor2, nColor3, nAlpha;
for (long nY = 0L; nY < nDstHeight; nY++)
{
const long nMapY = mpMapY[nY];
const long nMapFY = mpMapYOffset[nY];
pLine0 = pSource->GetScanline(nMapY);
pLine1 = pSource->GetScanline(nMapY + 1);
pLineAlpha0 = pSourceAlpha->GetScanline(nMapY);
pLineAlpha1 = pSourceAlpha->GetScanline(nMapY + 1);
pDestScanline = pDestination->GetScanline(nY);
for (long nX = 0L; nX < nDstWidth; nX++)
{
const long nMapX = mpMapX[nX];
const long nMapFX = mpMapXOffset[nX];
pColorSample1 = pLine0 + 3L * nMapX;
pColorSample2 = pColorSample1 + 3L;
nColor1Line1 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1++;
pColorSample2++;
nColor2Line1 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1++;
pColorSample2++;
nColor3Line1 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1 = pLine1 + 3L * nMapX;
pColorSample2 = pColorSample1 + 3L;
nColor1Line2 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1++;
pColorSample2++;
nColor2Line2 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1++;
pColorSample2++;
nColor3Line2 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1 = pLineAlpha0 + nMapX;
pColorSample2 = pColorSample1 + 1L;
nAlphaLine1 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<long>(*pColorSample2) - *pColorSample1);
pColorSample1 = pLineAlpha1 + nMapX;
pColorSample2 = pColorSample1 + 1L;
nAlphaLine2 = (static_cast<long>(*pColorSample1) << 7) + nMapFX * (static_cast<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_CHANNEL_MERGE(*pDestScanline, nColor1, nAlpha);
pDestScanline++;
*pDestScanline = COLOR_CHANNEL_MERGE(*pDestScanline, nColor2, nAlpha);
pDestScanline++;
*pDestScanline = COLOR_CHANNEL_MERGE(*pDestScanline, nColor3, nAlpha);
pDestScanline++;
pDestScanline++;
}
}
}
};
} // end anonymous namespace
void OutputDevice::DrawDeviceAlphaBitmapSlowPath(const Bitmap& rBitmap, const AlphaMask& rAlpha, Rectangle aDstRect, Rectangle aBmpRect, Size& aOutSize, Point& aOutPoint)
{
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 = NULL; // 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.ImplGetImpBitmap())
{
aDstRect.SetSize(aBmp.GetSizePixel());
}
const long nDstWidth = aDstRect.GetWidth();
const 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 long nOffX = IsRTLEnabled()
? aOutSize.Width() - aDstRect.GetWidth() - (aDstRect.Left() - aOutPoint.X())
: aDstRect.Left() - aOutPoint.X();
const long nOffY = aDstRect.Top() - aOutPoint.Y();
ScaleContext aContext(aDstRect, aBmpRect, aOutSize, nOffX, nOffY);
Bitmap::ScopedReadAccess pBitmapReadAccess(const_cast<Bitmap&>(rBitmap));
AlphaMask::ScopedReadAccess pAlphaReadAccess(const_cast<AlphaMask&>(rAlpha));
DBG_ASSERT( pAlphaReadAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_PAL ||
pAlphaReadAccess->GetScanlineFormat() == BMP_FORMAT_8BIT_TC_MASK,
"OutputDevice::ImplDrawAlpha(): non-8bit alpha no longer supported!" );
// #i38887# reading from screen may sometimes fail
if (aBmp.ImplGetImpBitmap())
{
Bitmap aNewBitmap;
if (mpAlphaVDev)
{
aNewBitmap = BlendBitmapWithAlpha(
aBmp, pBitmapReadAccess.get(), pAlphaReadAccess.get(),
aDstRect,
nOffY, nDstHeight,
nOffX, nDstWidth,
aContext.mpMapX.get(), aContext.mpMapY.get() );
}
else
{
if( aContext.blendBitmap( Bitmap::ScopedWriteAccess(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,
aContext.mpMapX.get(), aContext.mpMapY.get() );
}
}
// #110958# Disable alpha VDev, we're doing the necessary
// stuff explicitly furher below
if (mpAlphaVDev)
mpAlphaVDev = NULL;
DrawBitmap(aDstRect.TopLeft(), aNewBitmap);
// #110958# Enable alpha VDev again
mpAlphaVDev = pOldVDev;
}
mbMap = bOldMap;
mpMetaFile = pOldMetaFile;
}
void OutputDevice::ScaleBitmap (Bitmap &rBmp, SalTwoRect &rPosAry)
{
const double nScaleX = rPosAry.mnDestWidth / static_cast<double>( rPosAry.mnSrcWidth );
const double nScaleY = rPosAry.mnDestHeight / static_cast<double>( rPosAry.mnSrcHeight );
// If subsampling, use Bitmap::Scale for subsampling for better quality.
if ( nScaleX < 1.0 || nScaleY < 1.0 )
{
rBmp.Scale ( nScaleX, nScaleY );
rPosAry.mnSrcWidth = rPosAry.mnDestWidth;
rPosAry.mnSrcHeight = rPosAry.mnDestHeight;
}
}
bool OutputDevice::DrawTransformBitmapExDirect(
const basegfx::B2DHomMatrix& aFullTransform,
const BitmapEx& rBitmapEx)
{
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().ImplGetImpBitmap()->ImplGetSalBitmap();
SalBitmap* pSalAlphaBmp = 0;
if(rBitmapEx.IsTransparent())
{
if(rBitmapEx.IsAlpha())
{
pSalAlphaBmp = rBitmapEx.GetAlpha().ImplGetImpBitmap()->ImplGetSalBitmap();
}
else
{
pSalAlphaBmp = rBitmapEx.GetMask().ImplGetImpBitmap()->ImplGetSalBitmap();
}
}
bDone = mpGraphics->DrawTransformedBitmap(
aNull,
aTopX,
aTopY,
*pSalSrcBmp,
pSalAlphaBmp,
this);
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())
{
const Rectangle aRegionRectangle(GetActiveClipRegion().GetBoundRect());
aOutPixel.intersect( // caution! Range from rectangle, one too much (!)
basegfx::B2DRange(
aRegionRectangle.Left(),
aRegionRectangle.Top(),
aRegionRectangle.Right() + 1,
aRegionRectangle.Bottom() + 1));
}
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;
}
void OutputDevice::DrawTransformedBitmapEx(
const basegfx::B2DHomMatrix& rTransformation,
const BitmapEx& rBitmapEx)
{
if( ImplIsRecordLayout() )
return;
if(rBitmapEx.IsEmpty())
return;
if ( mnDrawMode & DRAWMODE_NOBITMAP )
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));
static bool bForceToOwnTransformer(false);
if(!bForceToOwnTransformer && !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
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, rBitmapEx);
return;
}
// we have rotation,shear or mirror, check if some crazy mode needs the
// created transformed bitmap
const bool bInvert(ROP_INVERT == meRasterOp);
const bool bBitmapChangedColor(mnDrawMode & (DRAWMODE_BLACKBITMAP | DRAWMODE_WHITEBITMAP | DRAWMODE_GRAYBITMAP | DRAWMODE_GHOSTEDBITMAP));
const bool bMetafile(mpMetaFile);
bool bDone(false);
const basegfx::B2DHomMatrix aFullTransform(GetViewTransformation() * rTransformation);
const bool bTryDirectPaint(!bInvert && !bBitmapChangedColor && !bMetafile );
if(!bForceToOwnTransformer && bTryDirectPaint)
{
bDone = DrawTransformBitmapExDirect(aFullTransform, rBitmapEx);
}
if(!bDone)
{
// take the fallback when no rotate and shear, but mirror (else we would have done this above)
if(!bForceToOwnTransformer && !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, rBitmapEx);
return;
}
// 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 smooting and an area
// dependent of original size for good quality when e.g. rotated/sheared. Still, limit to a maximum
// to avoid crashes/ressource problems (ca. 1500x3000 here)
const Size& rOriginalSizePixel(rBitmapEx.GetSizePixel());
const double fOrigArea(rOriginalSizePixel.Width() * rOriginalSizePixel.Height() * 0.5);
const double fOrigAreaScaled(bSheared || bRotated ? fOrigArea * 1.44 : fOrigArea);
double fMaximumArea(std::min(4500000.0, std::max(1000000.0, fOrigAreaScaled)));
if(!bMetafile)
{
if ( !TransformAndReduceBitmapExToTargetRange( aFullTransform, aVisibleRange, fMaximumArea ) )
return;
}
if(!aVisibleRange.isEmpty())
{
static bool bDoSmoothAtAll(true);
BitmapEx aTransformed(rBitmapEx);
// #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.IsTransparent() && (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);
}
aTransformed = aTransformed.getTransformed(
aFullTransform,
aVisibleRange,
fMaximumArea,
bDoSmoothAtAll);
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::tools::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);
}
}
}
namespace
{
BitmapEx makeDisabledBitmap(const Bitmap &rBitmap)
{
const Size aTotalSize( rBitmap.GetSizePixel() );
Bitmap aGrey( aTotalSize, 8, &Bitmap::GetGreyPalette( 256 ) );
AlphaMask aGreyAlphaMask( aTotalSize );
BitmapReadAccess* pBmp = const_cast<Bitmap&>(rBitmap).AcquireReadAccess();
BitmapWriteAccess* pGrey = aGrey.AcquireWriteAccess();
BitmapWriteAccess* pGreyAlphaMask = aGreyAlphaMask.AcquireWriteAccess();
if( pBmp && pGrey && pGreyAlphaMask )
{
BitmapColor aGreyVal( 0 );
BitmapColor aGreyAlphaMaskVal( 0 );
const int nLeft = 0, nRight = aTotalSize.Width();
const int nTop = 0, nBottom = nTop + aTotalSize.Height();
for( int nY = nTop; nY < nBottom; ++nY )
{
for( int nX = nLeft; nX < nRight; ++nX )
{
aGreyVal.SetIndex( pBmp->GetLuminance( nY, nX ) );
pGrey->SetPixel( nY, nX, aGreyVal );
aGreyAlphaMaskVal.SetIndex( static_cast< sal_uInt8 >( 128ul ) );
pGreyAlphaMask->SetPixel( nY, nX, aGreyAlphaMaskVal );
}
}
}
Bitmap::ReleaseAccess( pBmp );
Bitmap::ReleaseAccess( pGrey );
Bitmap::ReleaseAccess( pGreyAlphaMask );
return BitmapEx( aGrey, aGreyAlphaMask );
}
}
void OutputDevice::DrawImage( const Point& rPos, const Image& rImage, sal_uInt16 nStyle )
{
DrawImage( rPos, Size(), rImage, nStyle );
}
void OutputDevice::DrawImage( const Point& rPos, const Size& rSize,
const Image& rImage, sal_uInt16 nStyle )
{
bool bIsSizeValid = (rSize.getWidth() == 0 || rSize.getHeight() == 0) ? false : true;
if( rImage.mpImplData && !ImplIsRecordLayout() )
{
switch( rImage.mpImplData->meType )
{
case IMAGETYPE_BITMAP:
{
const Bitmap &rBitmap = *static_cast< Bitmap* >( rImage.mpImplData->mpData );
if( nStyle & IMAGE_DRAW_DISABLE )
{
if ( bIsSizeValid )
DrawBitmapEx( rPos, rSize, makeDisabledBitmap(rBitmap) );
else
DrawBitmapEx( rPos, makeDisabledBitmap(rBitmap) );
}
else
{
if ( bIsSizeValid )
DrawBitmap( rPos, rSize, rBitmap );
else
DrawBitmap( rPos, rBitmap );
}
}
break;
case IMAGETYPE_IMAGE:
{
ImplImageData* pData = static_cast< ImplImageData* >( rImage.mpImplData->mpData );
if ( !pData->mpImageBitmap )
{
const Size aSize( pData->maBmpEx.GetSizePixel() );
pData->mpImageBitmap = new ImplImageBmp;
pData->mpImageBitmap->Create( pData->maBmpEx, aSize.Width(), aSize.Height(), 1 );
}
if ( bIsSizeValid )
pData->mpImageBitmap->Draw( 0, this, rPos, nStyle, &rSize );
else
pData->mpImageBitmap->Draw( 0, this, rPos, nStyle );
}
break;
default:
break;
}
}
}
namespace
{
// Co = Cs + Cd*(1-As) premultiplied alpha -or-
// Co = (AsCs + AdCd*(1-As)) / Ao
inline 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 ? ( (int)nSourceAlpha*nSourceColor + (int)nDstAlpha*nDestColor -
(int)nDstAlpha*nDestColor*nSourceAlpha/255 ) / (int)nResAlpha : 0;
return sal_uInt8( c );
}
inline BitmapColor AlphaBlend( int nX, int nY,
const long nMapX,
const long nMapY,
BitmapReadAccess* pP,
BitmapReadAccess* pA,
BitmapReadAccess* pB,
BitmapWriteAccess* 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 = (int)nSrcAlpha + (int)nDstAlpha - (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;
}
}
bool OutputDevice::BlendBitmap(
const SalTwoRect& rPosAry,
const Bitmap& rBmp )
{
return mpGraphics->BlendBitmap( rPosAry, *rBmp.ImplGetImpBitmap()->ImplGetSalBitmap(), this );
}
Bitmap OutputDevice::BlendBitmapWithAlpha(
Bitmap& aBmp,
BitmapReadAccess* pP,
BitmapReadAccess* pA,
const Rectangle& aDstRect,
const sal_Int32 nOffY,
const sal_Int32 nDstHeight,
const sal_Int32 nOffX,
const sal_Int32 nDstWidth,
const long* pMapX,
const 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() ) );
BitmapWriteAccess* pAlphaW = aAlphaBitmap.AcquireWriteAccess();
if( GetBitCount() <= 8 )
{
Bitmap aDither( aBmp.GetSizePixel(), 8 );
BitmapColor aIndex( 0 );
BitmapReadAccess* pB = aBmp.AcquireReadAccess();
BitmapWriteAccess* pW = aDither.AcquireWriteAccess();
if (pB && pP && pA && pW && pAlphaW)
{
int nOutY;
for( nY = 0, nOutY = nOffY; nY < nDstHeight; nY++, nOutY++ )
{
const long nMapY = pMapY[ nY ];
const long nModY = ( nOutY & 0x0FL ) << 4L;
int nOutX;
for( nX = 0, nOutX = nOffX; nX < nDstWidth; nX++, nOutX++ )
{
const long nMapX = pMapX[ nX ];
const sal_uLong nD = nVCLDitherLut[ nModY | ( nOutX & 0x0FL ) ];
aDstCol = AlphaBlend( nX, nY, nMapX, nMapY, pP, pA, pB, pAlphaW, nResAlpha );
aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ ( nVCLLut[ aDstCol.GetRed() ] + nD ) >> 16UL ] +
nVCLGLut[ ( nVCLLut[ aDstCol.GetGreen() ] + nD ) >> 16UL ] +
nVCLBLut[ ( nVCLLut[ aDstCol.GetBlue() ] + nD ) >> 16UL ] ) );
pW->SetPixel( nY, nX, aIndex );
aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ ( nVCLLut[ 255-nResAlpha ] + nD ) >> 16UL ] +
nVCLGLut[ ( nVCLLut[ 255-nResAlpha ] + nD ) >> 16UL ] +
nVCLBLut[ ( nVCLLut[ 255-nResAlpha ] + nD ) >> 16UL ] ) );
pAlphaW->SetPixel( nY, nX, aIndex );
}
}
}
Bitmap::ReleaseAccess( pB );
Bitmap::ReleaseAccess( pW );
res = aDither;
}
else
{
BitmapWriteAccess* pB = aBmp.AcquireWriteAccess();
if (pB && pP && pA && pAlphaW)
{
for( nY = 0; nY < nDstHeight; nY++ )
{
const long nMapY = pMapY[ nY ];
for( nX = 0; nX < nDstWidth; nX++ )
{
const long nMapX = pMapX[ nX ];
aDstCol = AlphaBlend( nX, nY, nMapX, nMapY, pP, pA, pB, pAlphaW, nResAlpha );
pB->SetPixel( nY, nX, aDstCol );
pAlphaW->SetPixel( nY, nX, Color(255L-nResAlpha, 255L-nResAlpha, 255L-nResAlpha) );
}
}
}
Bitmap::ReleaseAccess( pB );
res = aBmp;
}
Bitmap::ReleaseAccess( pAlphaW );
mpAlphaVDev->DrawBitmap( aDstRect.TopLeft(), aAlphaBitmap );
mpAlphaVDev->EnableMapMode( bOldMapMode );
return res;
}
Bitmap OutputDevice::BlendBitmap(
Bitmap& aBmp,
BitmapReadAccess* pP,
BitmapReadAccess* pA,
const sal_Int32 nOffY,
const sal_Int32 nDstHeight,
const sal_Int32 nOffX,
const sal_Int32 nDstWidth,
const Rectangle& aBmpRect,
const Size& aOutSz,
const bool bHMirr,
const bool bVMirr,
const long* pMapX,
const long* pMapY )
{
BitmapColor aDstCol;
Bitmap res;
int nX, nY;
if( GetBitCount() <= 8 )
{
Bitmap aDither( aBmp.GetSizePixel(), 8 );
BitmapColor aIndex( 0 );
BitmapReadAccess* pB = aBmp.AcquireReadAccess();
BitmapWriteAccess* pW = aDither.AcquireWriteAccess();
if( pB && pP && pA && pW )
{
int nOutY;
for( nY = 0, nOutY = nOffY; nY < nDstHeight; nY++, nOutY++ )
{
const long nMapY = pMapY[ nY ];
const long nModY = ( nOutY & 0x0FL ) << 4L;
int nOutX;
for( nX = 0, nOutX = nOffX; nX < nDstWidth; nX++, nOutX++ )
{
const long nMapX = pMapX[ nX ];
const sal_uLong nD = nVCLDitherLut[ nModY | ( nOutX & 0x0FL ) ];
aDstCol = pB->GetColor( nY, nX );
aDstCol.Merge( pP->GetColor( nMapY, nMapX ), pA->GetPixelIndex( nMapY, nMapX ) );
aIndex.SetIndex( (sal_uInt8) ( nVCLRLut[ ( nVCLLut[ aDstCol.GetRed() ] + nD ) >> 16UL ] +
nVCLGLut[ ( nVCLLut[ aDstCol.GetGreen() ] + nD ) >> 16UL ] +
nVCLBLut[ ( nVCLLut[ aDstCol.GetBlue() ] + nD ) >> 16UL ] ) );
pW->SetPixel( nY, nX, aIndex );
}
}
}
Bitmap::ReleaseAccess( pB );
Bitmap::ReleaseAccess( pW );
res = aDither;
}
else
{
BitmapWriteAccess* pB = aBmp.AcquireWriteAccess();
bool bFastBlend = false;
if( pP && pA && pB )
{
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( pP && pA && pB && !bFastBlend )
{
switch( pP->GetScanlineFormat() )
{
case( BMP_FORMAT_8BIT_PAL ):
{
for( nY = 0; nY < nDstHeight; nY++ )
{
const long nMapY = pMapY[ nY ];
Scanline pPScan = pP->GetScanline( nMapY );
Scanline pAScan = pA->GetScanline( nMapY );
for( nX = 0; nX < nDstWidth; nX++ )
{
const long nMapX = pMapX[ nX ];
aDstCol = pB->GetPixel( nY, nX );
pB->SetPixel( nY, nX, aDstCol.Merge( pP->GetPaletteColor( pPScan[ nMapX ] ),
pAScan[ nMapX ] ) );
}
}
}
break;
default:
{
for( nY = 0; nY < nDstHeight; nY++ )
{
const long nMapY = pMapY[ nY ];
Scanline pAScan = pA->GetScanline( nMapY );
for( nX = 0; nX < nDstWidth; nX++ )
{
const long nMapX = pMapX[ nX ];
aDstCol = pB->GetPixel( nY, nX );
pB->SetPixel( nY, nX, aDstCol.Merge( pP->GetColor( nMapY, nMapX ),
pAScan[ nMapX ] ) );
}
}
}
break;
}
}
Bitmap::ReleaseAccess( pB );
res = aBmp;
}
return res;
}
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