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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_slideshow.hxx"
#include <canvas/debug.hxx>
#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include <cppcanvas/spritecanvas.hxx>
#include "combtransition.hxx"
#include <boost/bind.hpp>
namespace slideshow {
namespace internal {
namespace {
basegfx::B2DPolyPolygon createClipPolygon(
const ::basegfx::B2DVector& rDirection,
const ::basegfx::B2DSize& rSlideSize,
int nNumStrips, int nOffset )
{
// create clip polygon in standard orientation (will later
// be rotated to match direction vector)
::basegfx::B2DPolyPolygon aClipPoly;
// create nNumStrips/2 vertical strips
for( int i=nOffset; i<nNumStrips; i+=2 )
{
aClipPoly.append(
::basegfx::tools::createPolygonFromRect(
::basegfx::B2DRectangle( double(i)/nNumStrips, 0.0,
double(i+1)/nNumStrips, 1.0) ) );
}
// rotate polygons, such that the strips are parallel to
// the given direction vector
const ::basegfx::B2DVector aUpVec(0.0, 1.0);
basegfx::B2DHomMatrix aMatrix(basegfx::tools::createRotateAroundPoint(0.5, 0.5, aUpVec.angle( rDirection )));
// blow up clip polygon to slide size
aMatrix.scale( rSlideSize.getX(),
rSlideSize.getY() );
aClipPoly.transform( aMatrix );
return aClipPoly;
}
}
CombTransition::CombTransition(
boost::optional<SlideSharedPtr> const & leavingSlide,
const SlideSharedPtr& pEnteringSlide,
const SoundPlayerSharedPtr& pSoundPlayer,
const UnoViewContainer& rViewContainer,
ScreenUpdater& rScreenUpdater,
EventMultiplexer& rEventMultiplexer,
const ::basegfx::B2DVector& rPushDirection,
sal_Int32 nNumStripes )
: SlideChangeBase( leavingSlide, pEnteringSlide, pSoundPlayer,
rViewContainer, rScreenUpdater, rEventMultiplexer,
false /* no leaving sprite */,
false /* no entering sprite */ ),
maPushDirectionUnit( rPushDirection ),
mnNumStripes( nNumStripes )
{
}
void CombTransition::renderComb( double t,
const ViewEntry& rViewEntry ) const
{
const SlideBitmapSharedPtr& pEnteringBitmap = getEnteringBitmap(rViewEntry);
const cppcanvas::CanvasSharedPtr pCanvas_ = rViewEntry.mpView->getCanvas();
if( !pEnteringBitmap || !pCanvas_ )
return;
// calc bitmap offsets. The enter/leaving bitmaps are only
// as large as the actual slides. For scaled-down
// presentations, we have to move the left, top edge of
// those bitmaps to the actual position, governed by the
// given view transform. The aBitmapPosPixel local
// variable is already in device coordinate space
// (i.e. pixel).
// TODO(F2): Properly respect clip here. Might have to be transformed, too.
const basegfx::B2DHomMatrix viewTransform( rViewEntry.mpView->getTransformation() );
const basegfx::B2DPoint pageOrigin( viewTransform * basegfx::B2DPoint() );
// change transformation on cloned canvas to be in
// device pixel
cppcanvas::CanvasSharedPtr pCanvas( pCanvas_->clone() );
basegfx::B2DPoint p;
// TODO(Q2): Use basegfx bitmaps here
// TODO(F1): SlideBitmap is not fully portable between different canvases!
const basegfx::B2DSize enteringSizePixel(
getEnteringSlideSizePixel( rViewEntry.mpView) );
const basegfx::B2DVector aPushDirection = basegfx::B2DVector(
enteringSizePixel * maPushDirectionUnit );
const basegfx::B2DPolyPolygon aClipPolygon1 = basegfx::B2DPolyPolygon(
createClipPolygon( maPushDirectionUnit,
enteringSizePixel,
mnNumStripes, 0 ) );
const basegfx::B2DPolyPolygon aClipPolygon2 = basegfx::B2DPolyPolygon(
createClipPolygon( maPushDirectionUnit,
enteringSizePixel,
mnNumStripes, 1 ) );
SlideBitmapSharedPtr const & pLeavingBitmap = getLeavingBitmap(rViewEntry);
if( pLeavingBitmap )
{
// render odd strips:
pLeavingBitmap->clip( aClipPolygon1 );
// don't modify bitmap object (no move!):
p = basegfx::B2DPoint( pageOrigin + (t * aPushDirection) );
pCanvas->setTransformation(basegfx::tools::createTranslateB2DHomMatrix(p.getX(), p.getY()));
pLeavingBitmap->draw( pCanvas );
// render even strips:
pLeavingBitmap->clip( aClipPolygon2 );
// don't modify bitmap object (no move!):
p = basegfx::B2DPoint( pageOrigin - (t * aPushDirection) );
pCanvas->setTransformation(basegfx::tools::createTranslateB2DHomMatrix(p.getX(), p.getY()));
pLeavingBitmap->draw( pCanvas );
}
// TODO(Q2): Use basegfx bitmaps here
// TODO(F1): SlideBitmap is not fully portable between different canvases!
// render odd strips:
pEnteringBitmap->clip( aClipPolygon1 );
// don't modify bitmap object (no move!):
p = basegfx::B2DPoint( pageOrigin + ((t - 1.0) * aPushDirection) );
pCanvas->setTransformation(basegfx::tools::createTranslateB2DHomMatrix(p.getX(), p.getY()));
pEnteringBitmap->draw( pCanvas );
// render even strips:
pEnteringBitmap->clip( aClipPolygon2 );
// don't modify bitmap object (no move!):
p = basegfx::B2DPoint( pageOrigin + ((1.0 - t) * aPushDirection) );
pCanvas->setTransformation(basegfx::tools::createTranslateB2DHomMatrix(p.getX(), p.getY()));
pEnteringBitmap->draw( pCanvas );
}
bool CombTransition::operator()( double t )
{
std::for_each( beginViews(),
endViews(),
boost::bind( &CombTransition::renderComb,
this,
t,
_1 ));
getScreenUpdater().notifyUpdate();
return true;
}
} // namespace internal
} // namespace presentation
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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