/************************************************************** * * 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 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ // MARKER(update_precomp.py): autogen include statement, do not remove #include "precompiled_slideshow.hxx" // must be first #include #include #include #include #include #include #include #include #include using namespace ::com::sun::star; namespace slideshow { namespace internal { AnimatedSprite::AnimatedSprite( const ViewLayerSharedPtr& rViewLayer, const ::basegfx::B2DSize& rSpriteSizePixel, double nSpritePrio ) : mpViewLayer( rViewLayer ), mpSprite(), maEffectiveSpriteSizePixel( rSpriteSizePixel ), maContentPixelOffset(), mnSpritePrio(nSpritePrio), mnAlpha(0.0), maPosPixel(), maClip(), maTransform(), mbSpriteVisible( false ) { ENSURE_OR_THROW( mpViewLayer, "AnimatedSprite::AnimatedSprite(): Invalid view layer" ); // Add half a pixel tolerance to sprite size, since we later on compare // against it in resize(). And view transformations will almost never yield // the same data bits when transforming to device coordinates maEffectiveSpriteSizePixel += ::basegfx::B2DSize(0.5, 0.5); mpSprite = mpViewLayer->createSprite( maEffectiveSpriteSizePixel, mnSpritePrio ); ENSURE_OR_THROW( mpSprite, "AnimatedSprite::AnimatedSprite(): Could not create sprite" ); } ::cppcanvas::CanvasSharedPtr AnimatedSprite::getContentCanvas() const { ENSURE_OR_THROW( mpViewLayer->getCanvas(), "AnimatedSprite::getContentCanvas(): No view layer canvas" ); const ::cppcanvas::CanvasSharedPtr pContentCanvas( mpSprite->getContentCanvas() ); pContentCanvas->clear(); // extract linear part of canvas view transformation // (linear means: without translational components). The // only translation that is imposed at the view transform // is the local content pixel offset. // // We can apply that directly here, no need to call // aLinearTransform.translate(), since, as said above, the // last column of aLinearTransform is assumed [0 0 1] ::basegfx::B2DHomMatrix aLinearTransform( mpViewLayer->getTransformation() ); aLinearTransform.set( 0, 2, maContentPixelOffset.getX() ); aLinearTransform.set( 1, 2, maContentPixelOffset.getY() ); // apply linear part of canvas view transformation to sprite canvas pContentCanvas->setTransformation( aLinearTransform ); return pContentCanvas; } bool AnimatedSprite::resize( const ::basegfx::B2DSize& rSpriteSizePixel ) { // Enlarge or reduce the sprite size, if necessary. This // method employs a strategy similar to container, when // allocating memory: size is doubled or halved every time // the limit is reached. This makes for amortized constant // time in runtime complexity. Note that we take exact // powers of two here, since several HW-accelerated canvas // implementations are limited to such sprite sizes // (otherwise, those implementations would internally // round up, too, wasting precious mem). ::basegfx::B2DSize aNewSize( maEffectiveSpriteSizePixel ); bool bNeedResize( false ); if( rSpriteSizePixel.getX() > maEffectiveSpriteSizePixel.getX() || rSpriteSizePixel.getX() < 0.5*maEffectiveSpriteSizePixel.getX() ) { // enlarge or shrink width aNewSize.setX( ::canvas::tools::nextPow2( ::basegfx::fround(rSpriteSizePixel.getX()) ) ); bNeedResize = true; } if( rSpriteSizePixel.getY() > maEffectiveSpriteSizePixel.getY() || rSpriteSizePixel.getY() < 0.5*maEffectiveSpriteSizePixel.getY() ) { // enlarge or shrink height, by doubling it aNewSize.setY( ::canvas::tools::nextPow2( ::basegfx::fround(rSpriteSizePixel.getY()) ) ); bNeedResize = true; } if( bNeedResize ) { // as the old sprite might have already been altered // (and therefore been placed in the update list of // the spritecanvas for this frame), must hide it // here, to ensure it's not visible on screen any // longer. mpSprite->hide(); maEffectiveSpriteSizePixel = aNewSize; mpSprite = mpViewLayer->createSprite( maEffectiveSpriteSizePixel, mnSpritePrio ); ENSURE_OR_THROW( mpSprite, "AnimatedSprite::resize(): Could not create new sprite" ); // set attributes similar to previous sprite if( mpSprite && mbSpriteVisible ) { mpSprite->show(); mpSprite->setAlpha( mnAlpha ); if( maPosPixel ) mpSprite->movePixel( *maPosPixel ); if( maClip ) mpSprite->setClip( *maClip ); } } return (mpSprite.get() != NULL); } void AnimatedSprite::setPixelOffset( const ::basegfx::B2DSize& rPixelOffset ) { maContentPixelOffset = rPixelOffset; } ::basegfx::B2DSize AnimatedSprite::getPixelOffset() const { return maContentPixelOffset; } void AnimatedSprite::movePixel( const ::basegfx::B2DPoint& rNewPos ) { maPosPixel.reset( rNewPos ); mpSprite->movePixel( rNewPos ); } void AnimatedSprite::setAlpha( double nAlpha ) { mnAlpha = nAlpha; mpSprite->setAlpha( nAlpha ); } void AnimatedSprite::clip( const ::basegfx::B2DPolyPolygon& rClip ) { maClip.reset( rClip ); mpSprite->setClipPixel( rClip ); } void AnimatedSprite::clip() { maClip.reset(); mpSprite->setClip(); } void AnimatedSprite::transform( const ::basegfx::B2DHomMatrix& rTransform ) { maTransform.reset( rTransform ); mpSprite->transform( rTransform ); } void AnimatedSprite::setPriority( double nPrio ) { mpSprite->setPriority( nPrio ); } void AnimatedSprite::hide() { mpSprite->hide(); mbSpriteVisible = false; } void AnimatedSprite::show() { mbSpriteVisible = true; mpSprite->show(); } } }