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INTEGRATION: CWS presentationengine01 (1.1.2); FILE ADDED

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2004/11/17 17:00:27 thb 1.1.2.2: #118514# Canvas module reorg
2004/09/27 20:10:26 thb 1.1.2.1: #110496# Initial revision
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Rüdiger Timm 2004-11-26 16:09:00 +00:00
parent 9c465c7649
commit fc2873a6b7
1 changed files with 180 additions and 0 deletions
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canvas/source/vcl/bitmapbackbuffer.cxx Normal file
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/*************************************************************************
*
* $RCSfile: bitmapbackbuffer.cxx,v $
*
* $Revision: 1.2 $
*
* last change: $Author: rt $ $Date: 2004-11-26 17:09:00 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 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
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#include "bitmapbackbuffer.hxx"
#ifndef _OSL_MUTEX_HXX_
#include <osl/mutex.hxx>
#endif
#ifndef _VOS_MUTEX_HXX_
#include <vos/mutex.hxx>
#endif
#ifndef _SV_SVAPP_HXX
#include <vcl/svapp.hxx>
#endif
#ifndef _SV_BITMAPEX_HXX
#include <vcl/bitmapex.hxx>
#endif
#ifndef _SV_BMPACC_HXX
#include <vcl/bmpacc.hxx>
#endif
namespace vclcanvas
{
BitmapBackBuffer::BitmapBackBuffer( const BitmapEx& rBitmap,
const OutputDevice& rRefDevice ) :
maBitmap( rBitmap ),
mpVDev( NULL ),
mrRefDevice( rRefDevice ),
mbBitmapContentIsCurrent( true )
{
}
BitmapBackBuffer::~BitmapBackBuffer()
{
// make sure solar mutex is held on deletion (other methods
// are supposed to already hold the solar mutex)
::vos::OGuard aGuard( Application::GetSolarMutex() );
if( mpVDev )
delete mpVDev;
}
OutputDevice& BitmapBackBuffer::getOutDev()
{
createVDev();
updateVDev();
return *mpVDev;
}
const OutputDevice& BitmapBackBuffer::getOutDev() const
{
createVDev();
updateVDev();
return *mpVDev;
}
VirtualDevice& BitmapBackBuffer::getVirDev()
{
createVDev();
updateVDev();
return *mpVDev;
}
const VirtualDevice& BitmapBackBuffer::getVirDev() const
{
createVDev();
updateVDev();
return *mpVDev;
}
BitmapEx& BitmapBackBuffer::getBitmapReference()
{
if( !mbBitmapContentIsCurrent && mpVDev )
{
// VDev content is more current than bitmap - copy contents before!
mpVDev->EnableMapMode( FALSE );
const Point aEmptyPoint;
*maBitmap = mpVDev->GetBitmapEx( aEmptyPoint,
mpVDev->GetOutputSizePixel() );
}
// client queries bitmap, and will possibly alter content -
// next time, VDev needs to be updated
mbBitmapContentIsCurrent = true;
return *maBitmap;
}
void BitmapBackBuffer::createVDev() const
{
if( !mpVDev )
{
// VDev not yet created, do it now. Create an alpha-VDev,
// if bitmap has transparency.
mpVDev = maBitmap->IsTransparent() ?
new VirtualDevice( mrRefDevice, 0, 0 ) :
new VirtualDevice( mrRefDevice );
OSL_ENSURE( mpVDev,
"BitmapBackBuffer::createVDev(): Unable to create VirtualDevice" );
mpVDev->SetOutputSizePixel( maBitmap->GetSizePixel() );
}
}
void BitmapBackBuffer::updateVDev() const
{
if( mpVDev && mbBitmapContentIsCurrent )
{
// fill with bitmap content
mpVDev->EnableMapMode( FALSE );
const Point aEmptyPoint;
mpVDev->DrawBitmapEx( aEmptyPoint, *maBitmap );
// canvas queried the VDev, and will possibly paint into it
mbBitmapContentIsCurrent = false;
}
}
}