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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: vclhelperbufferdevice.cxx,v $
*
* $Revision: 1.6 $
*
* last change: $Author: aw $ $Date: 2008-05-27 14:11:22 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_drawinglayer.hxx"
#include <vclhelperbufferdevice.hxx>
#include <basegfx/range/b2drange.hxx>
#include <vcl/bitmapex.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
//////////////////////////////////////////////////////////////////////////////
// support for rendering Bitmap and BitmapEx contents
namespace drawinglayer
{
impBufferDevice::impBufferDevice(
OutputDevice& rOutDev,
const basegfx::B2DRange& rRange)
: mrOutDev(rOutDev),
maContent(rOutDev),
mpMask(0L),
mpAlpha(0L)
{
basegfx::B2DRange aRangePixel(rRange);
aRangePixel.transform(rOutDev.GetViewTransformation());
const Rectangle aRectPixel(
(sal_Int32)floor(aRangePixel.getMinX()), (sal_Int32)floor(aRangePixel.getMinY()),
(sal_Int32)ceil(aRangePixel.getMaxX()), (sal_Int32)ceil(aRangePixel.getMaxY()));
const Point aEmptyPoint;
maDestPixel = Rectangle(aEmptyPoint, rOutDev.GetOutputSizePixel());
maDestPixel.Intersection(aRectPixel);
if(isVisible())
{
maContent.SetOutputSizePixel(maDestPixel.GetSize(), false);
const bool bWasEnabledSrc(rOutDev.IsMapModeEnabled());
rOutDev.EnableMapMode(false);
maContent.DrawOutDev(aEmptyPoint, maDestPixel.GetSize(), maDestPixel.TopLeft(), maDestPixel.GetSize(), rOutDev);
rOutDev.EnableMapMode(bWasEnabledSrc);
MapMode aNewMapMode(rOutDev.GetMapMode());
const Point aLogicTopLeft(rOutDev.PixelToLogic(maDestPixel.TopLeft()));
aNewMapMode.SetOrigin(Point(-aLogicTopLeft.X(), -aLogicTopLeft.Y()));
maContent.SetMapMode(aNewMapMode);
// copy AA flag for new target
maContent.SetAntialiasing(mrOutDev.GetAntialiasing());
}
}
impBufferDevice::~impBufferDevice()
{
delete mpMask;
delete mpAlpha;
}
void impBufferDevice::paint(double fTrans)
{
const Point aEmptyPoint;
const Size aSizePixel(maContent.GetOutputSizePixel());
const bool bWasEnabledDst(mrOutDev.IsMapModeEnabled());
mrOutDev.EnableMapMode(false);
maContent.EnableMapMode(false);
Bitmap aContent(maContent.GetBitmap(aEmptyPoint, aSizePixel));
if(mpAlpha)
{
mpAlpha->EnableMapMode(false);
AlphaMask aAlphaMask(mpAlpha->GetBitmap(aEmptyPoint, aSizePixel));
mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
}
else if(mpMask)
{
mpMask->EnableMapMode(false);
Bitmap aMask(mpMask->GetBitmap(aEmptyPoint, aSizePixel));
mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aMask));
}
else if(0.0 != fTrans)
{
sal_uInt8 nMaskValue((sal_uInt8)basegfx::fround(fTrans * 255.0));
AlphaMask aAlphaMask(aSizePixel, &nMaskValue);
mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
}
else
{
mrOutDev.DrawBitmap(maDestPixel.TopLeft(), aContent);
}
mrOutDev.EnableMapMode(bWasEnabledDst);
}
VirtualDevice& impBufferDevice::getMask()
{
if(!mpMask)
{
mpMask = new VirtualDevice(mrOutDev, 1);
mpMask->SetOutputSizePixel(maDestPixel.GetSize(), true);
mpMask->SetMapMode(maContent.GetMapMode());
// do NOT copy AA flag for mask!
}
return *mpMask;
}
VirtualDevice& impBufferDevice::getAlpha()
{
if(!mpAlpha)
{
mpAlpha = new VirtualDevice();
mpAlpha->SetOutputSizePixel(maDestPixel.GetSize(), true);
mpAlpha->SetMapMode(maContent.GetMapMode());
// copy AA flag for new target; masking needs to be smooth
mpAlpha->SetAntialiasing(maContent.GetAntialiasing());
}
return *mpAlpha;
}
} // end of namespace drawinglayer
//////////////////////////////////////////////////////////////////////////////
// eof
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