dc8d72b8ff
2005/02/15 23:51:00 thb 1.3.2.3: #i42440# Moved sprite-growing code to slideshow, some minor issues with size calculations for empty slides (when a 'leaving' slide is needed, but there's no previous one, an empty bitmap is generated) 2005/01/30 15:54:42 dbo 1.3.2.2: #i39787# correct bitmap dimensions Issue number: Submitted by: Reviewed by: 2005/01/26 11:18:31 dbo 1.3.2.1: #i39787# slide transition revision: recalc bitmaps/sprites in case of view changes Issue number: Submitted by: Reviewed by:
222 lines
8.0 KiB
C++
222 lines
8.0 KiB
C++
/*************************************************************************
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*
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* $RCSfile: combtransition.cxx,v $
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*
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* $Revision: 1.4 $
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*
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* last change: $Author: vg $ $Date: 2005-03-10 13:51:04 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#include "combtransition.hxx"
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#include "canvas/debug.hxx"
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#include "basegfx/polygon/b2dpolygontools.hxx"
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#include "basegfx/polygon/b2dpolypolygontools.hxx"
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namespace presentation {
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namespace internal {
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namespace {
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basegfx::B2DPolyPolygon createClipPolygon(
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const ::basegfx::B2DVector& rDirection,
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const ::basegfx::B2DSize& rSlideSize,
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int nNumStrips, int nOffset )
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{
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// create clip polygon in standard orientation (will later
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// be rotated to match direction vector)
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::basegfx::B2DPolyPolygon aClipPoly;
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// create nNumStrips/2 vertical strips
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for( int i=nOffset; i<nNumStrips; i+=2 )
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{
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aClipPoly.append(
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::basegfx::tools::createPolygonFromRect(
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::basegfx::B2DRectangle( (double)i/nNumStrips, 0.0,
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(double)(i+1)/nNumStrips, 1.0) ) );
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}
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// rotate polygons, such that the strips are parallel to
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// the given direction vector
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const ::basegfx::B2DVector aUpVec(0.0, 1.0);
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::basegfx::B2DHomMatrix aMatrix;
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aMatrix.translate( -0.5, -0.5 );
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aMatrix.rotate( aUpVec.angle( rDirection ) );
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aMatrix.translate( 0.5, 0.5 );
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// blow up clip polygon to slide size
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aMatrix.scale( rSlideSize.getX(),
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rSlideSize.getY() );
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aClipPoly.transform( aMatrix );
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return aClipPoly;
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}
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}
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CombTransition::CombTransition(
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boost::optional<SlideSharedPtr> const & leavingSlide,
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const SlideSharedPtr& pEnteringSlide,
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const SoundPlayerSharedPtr& pSoundPlayer,
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const ::basegfx::B2DVector& rPushDirection,
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sal_Int32 nNumStripes )
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: SlideChangeBase( leavingSlide, pEnteringSlide, pSoundPlayer,
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false /* no leaving sprite */,
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false /* no entering sprite */ ),
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maPushDirectionUnit( rPushDirection ),
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mnNumStripes( nNumStripes )
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{
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}
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void CombTransition::renderComb(
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double t, UnoViewSharedPtr const & pView ) const
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{
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const cppcanvas::CanvasSharedPtr pCanvas_ = pView->getCanvas();
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// calc bitmap offsets. The enter/leaving bitmaps are only
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// as large as the actual slides. For scaled-down
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// presentations, we have to move the left, top edge of
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// those bitmaps to the actual position, governed by the
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// given view transform. The aBitmapPosPixel local
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// variable is already in device coordinate space
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// (i.e. pixel).
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ENSURE_AND_THROW( pCanvas_.get(),
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"CombTransition::renderComb(): Invalid canvas" );
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// TODO(F2): Properly respect clip here. Might have to be transformed, too.
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const basegfx::B2DHomMatrix viewTransform( pCanvas_->getTransformation() );
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const basegfx::B2DPoint pageOrigin( viewTransform * basegfx::B2DPoint() );
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// change transformation on cloned canvas to be in
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// device pixel
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cppcanvas::CanvasSharedPtr pCanvas( pCanvas_->clone() );
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basegfx::B2DHomMatrix transform;
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basegfx::B2DPoint p;
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// TODO(Q2): Use basegfx bitmaps here
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// TODO(F1): SlideBitmap is not fully portable between different canvases!
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const basegfx::B2DSize enteringSizePixel(
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getEnteringSizePixel(pView) );
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const basegfx::B2DVector aPushDirection = basegfx::B2DVector(
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enteringSizePixel * maPushDirectionUnit );
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const basegfx::B2DPolyPolygon aClipPolygon1 = basegfx::B2DPolyPolygon(
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createClipPolygon( maPushDirectionUnit,
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enteringSizePixel,
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mnNumStripes, 0 ) );
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const basegfx::B2DPolyPolygon aClipPolygon2 = basegfx::B2DPolyPolygon(
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createClipPolygon( maPushDirectionUnit,
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enteringSizePixel,
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mnNumStripes, 1 ) );
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SlideBitmapSharedPtr const & pLeavingBitmap = getLeavingBitmap();
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if (pLeavingBitmap.get() != 0) {
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// render odd strips:
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pLeavingBitmap->clip( aClipPolygon1 );
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// don't modify bitmap object (no move!):
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p = basegfx::B2DPoint( pageOrigin + (t * aPushDirection) );
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transform.translate( p.getX(), p.getY() );
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pCanvas->setTransformation( transform );
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pLeavingBitmap->draw( pCanvas );
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// render even strips:
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pLeavingBitmap->clip( aClipPolygon2 );
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// don't modify bitmap object (no move!):
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transform.identity();
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p = basegfx::B2DPoint( pageOrigin - (t * aPushDirection) );
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transform.translate( p.getX(), p.getY() );
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pCanvas->setTransformation( transform );
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pLeavingBitmap->draw( pCanvas );
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}
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// TODO(Q2): Use basegfx bitmaps here
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// TODO(F1): SlideBitmap is not fully portable between different canvases!
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// render odd strips:
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SlideBitmapSharedPtr const & pEnteringBitmap = getEnteringBitmap();
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pEnteringBitmap->clip( aClipPolygon1 );
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// don't modify bitmap object (no move!):
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transform.identity();
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p = basegfx::B2DPoint( pageOrigin + ((t - 1.0) * aPushDirection) );
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transform.translate( p.getX(), p.getY() );
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pCanvas->setTransformation( transform );
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pEnteringBitmap->draw( pCanvas );
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// render even strips:
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pEnteringBitmap->clip( aClipPolygon2 );
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// don't modify bitmap object (no move!):
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transform.identity();
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p = basegfx::B2DPoint( pageOrigin + ((1.0 - t) * aPushDirection) );
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transform.translate( p.getX(), p.getY() );
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pCanvas->setTransformation( transform );
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pEnteringBitmap->draw( pCanvas );
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}
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bool CombTransition::operator()( double t )
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{
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SlideBitmapSharedPtr const & pSlideBitmap = getEnteringBitmap();
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if (pSlideBitmap.get() == 0)
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return false;
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for_each_view( boost::bind( &CombTransition::renderComb, this, t, _1 ) );
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return true;
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}
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} // namespace internal
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} // namespace presentation
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