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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"
+
+// must be first
+#include <canvas/debug.hxx>
+
+#include <basegfx/range/b2drange.hxx>
+#include <basegfx/range/b1drange.hxx>
+#include <basegfx/range/b2dpolyrange.hxx>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+#include <basegfx/polygon/b2dpolypolygontools.hxx>
+#include <basegfx/polygon/b2dpolypolygoncutter.hxx>
+
+#include "layer.hxx"
+
+#include <boost/bind.hpp>
+
+
+using namespace ::com::sun::star;
+
+namespace slideshow
+{
+ namespace internal
+ {
+ Layer::Layer( const basegfx::B2DRange& rMaxLayerBounds,
+ Dummy ) :
+ maViewEntries(),
+ maBounds(),
+ maNewBounds(),
+ maMaxBounds( rMaxLayerBounds ),
+ mbBoundsDirty(false),
+ mbBackgroundLayer(true),
+ mbClipSet(false)
+ {
+ }
+
+ Layer::Layer( const basegfx::B2DRange& rMaxLayerBounds ) :
+ maViewEntries(),
+ maBounds(),
+ maNewBounds(),
+ maMaxBounds( rMaxLayerBounds ),
+ mbBoundsDirty(false),
+ mbBackgroundLayer(false),
+ mbClipSet(false)
+ {
+ }
+
+ ViewLayerSharedPtr Layer::addView( const ViewSharedPtr& rNewView )
+ {
+ OSL_ASSERT( rNewView );
+
+ ViewEntryVector::iterator aIter;
+ const ViewEntryVector::iterator aEnd( maViewEntries.end() );
+ if( (aIter=std::find_if( maViewEntries.begin(),
+ aEnd,
+ boost::bind<bool>(
+ std::equal_to< ViewSharedPtr >(),
+ boost::bind( &ViewEntry::getView, _1 ),
+ boost::cref( rNewView )))) != aEnd )
+ {
+ // already added - just return existing layer
+ return aIter->mpViewLayer;
+
+ }
+
+ // not yet added - create new view layer
+ ViewLayerSharedPtr pNewLayer;
+ if( mbBackgroundLayer )
+ pNewLayer = rNewView;
+ else
+ pNewLayer = rNewView->createViewLayer(maBounds);
+
+ // add to local list
+ maViewEntries.push_back(
+ ViewEntry( rNewView,
+ pNewLayer ));
+
+ return maViewEntries.back().mpViewLayer;
+ }
+
+ ViewLayerSharedPtr Layer::removeView( const ViewSharedPtr& rView )
+ {
+ OSL_ASSERT( rView );
+
+ ViewEntryVector::iterator aIter;
+ const ViewEntryVector::iterator aEnd( maViewEntries.end() );
+ if( (aIter=std::find_if( maViewEntries.begin(),
+ aEnd,
+ boost::bind<bool>(
+ std::equal_to< ViewSharedPtr >(),
+ boost::bind( &ViewEntry::getView, _1 ),
+ boost::cref( rView )))) == aEnd )
+ {
+ // View was not added/is already removed
+ return ViewLayerSharedPtr();
+ }
+
+ OSL_ENSURE( std::count_if( maViewEntries.begin(),
+ aEnd,
+ boost::bind<bool>(
+ std::equal_to< ViewSharedPtr >(),
+ boost::bind( &ViewEntry::getView, _1 ),
+ boost::cref( rView ))) == 1,
+ "Layer::removeView(): view added multiple times" );
+
+ ViewLayerSharedPtr pRet( aIter->mpViewLayer );
+ maViewEntries.erase(aIter);
+
+ return pRet;
+ }
+
+ void Layer::viewChanged( const ViewSharedPtr& rChangedView )
+ {
+ ViewEntryVector::iterator aIter;
+ const ViewEntryVector::iterator aEnd( maViewEntries.end() );
+ if( (aIter=std::find_if( maViewEntries.begin(),
+ aEnd,
+ boost::bind<bool>(
+ std::equal_to< ViewSharedPtr >(),
+ boost::bind( &ViewEntry::getView, _1 ),
+ boost::cref( rChangedView )))) !=
+ aEnd )
+ {
+ // adapt size of given ViewLayer - background layer
+ // resizes with view.
+ if( !mbBackgroundLayer )
+ aIter->mpViewLayer->resize(maBounds);
+ }
+ }
+
+ void Layer::viewsChanged()
+ {
+ // adapt size of given ViewLayer - background layer
+ // resizes with view.
+ if( !mbBackgroundLayer )
+ {
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind( &ViewLayer::resize,
+ boost::bind( &ViewEntry::getViewLayer,
+ _1 ),
+ boost::cref(maBounds)));
+ }
+ }
+
+ void Layer::setShapeViews( ShapeSharedPtr const& rShape ) const
+ {
+ rShape->clearAllViewLayers();
+
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind(&Shape::addViewLayer,
+ boost::cref(rShape),
+ boost::bind(&ViewEntry::getViewLayer,
+ _1),
+ false ));
+ }
+
+ void Layer::setPriority( const ::basegfx::B1DRange& rPrioRange )
+ {
+ if( !mbBackgroundLayer )
+ {
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind( &ViewLayer::setPriority,
+ boost::bind( &ViewEntry::getViewLayer,
+ _1 ),
+ boost::cref(rPrioRange)));
+ }
+ }
+
+ void Layer::addUpdateRange( ::basegfx::B2DRange const& rUpdateRange )
+ {
+ // TODO(Q1): move this to B2DMultiRange
+ if( !rUpdateRange.isEmpty() )
+ maUpdateAreas.appendElement( rUpdateRange,
+ basegfx::ORIENTATION_POSITIVE );
+ }
+
+ void Layer::updateBounds( ShapeSharedPtr const& rShape )
+ {
+ if( !mbBackgroundLayer )
+ {
+ if( !mbBoundsDirty )
+ maNewBounds.reset();
+
+ maNewBounds.expand( rShape->getUpdateArea() );
+ }
+
+ mbBoundsDirty = true;
+ }
+
+ bool Layer::commitBounds()
+ {
+ mbBoundsDirty = false;
+
+ if( mbBackgroundLayer )
+ return false;
+
+ if( maNewBounds == maBounds )
+ return false;
+
+ maBounds = maNewBounds;
+ if( std::count_if( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind( &ViewLayer::resize,
+ boost::bind( &ViewEntry::getViewLayer,
+ _1 ),
+ boost::cref(maBounds)) ) == 0 )
+ {
+ return false;
+ }
+
+ // layer content invalid, update areas have wrong
+ // coordinates/not sensible anymore.
+ clearUpdateRanges();
+
+ return true;
+ }
+
+ void Layer::clearUpdateRanges()
+ {
+ maUpdateAreas.clear();
+ }
+
+ void Layer::clearContent()
+ {
+ // clear content on all view layers
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind(
+ &ViewLayer::clear,
+ boost::bind(
+ &ViewEntry::getViewLayer,
+ _1)));
+
+ // layer content cleared, update areas are not sensible
+ // anymore.
+ clearUpdateRanges();
+ }
+
+ class LayerEndUpdate : private boost::noncopyable
+ {
+ public:
+ LayerEndUpdate( LayerSharedPtr const& rLayer ) :
+ mpLayer( rLayer )
+ {}
+
+ ~LayerEndUpdate() { if(mpLayer) mpLayer->endUpdate(); }
+
+ void dismiss() { mpLayer.reset(); }
+
+ private:
+ LayerSharedPtr mpLayer;
+ };
+
+ Layer::EndUpdater Layer::beginUpdate()
+ {
+ if( maUpdateAreas.count() )
+ {
+ // perform proper layer update. That means, setup proper
+ // clipping, and render each shape that intersects with
+ // the calculated update area
+ ::basegfx::B2DPolyPolygon aClip( maUpdateAreas.solveCrossovers() );
+ aClip = ::basegfx::tools::stripNeutralPolygons(aClip);
+ aClip = ::basegfx::tools::stripDispensablePolygons(aClip, false);
+
+ // actually, if there happen to be shapes with zero
+ // update area in the maUpdateAreas vector, the
+ // resulting clip polygon will be empty.
+ if( aClip.count() )
+ {
+ // set clip to all view layers
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind(
+ &ViewLayer::setClip,
+ boost::bind(
+ &ViewEntry::getViewLayer,
+ _1),
+ boost::cref(aClip)));
+
+ // clear update area on all view layers
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind(
+ &ViewLayer::clear,
+ boost::bind(
+ &ViewEntry::getViewLayer,
+ _1)));
+
+ mbClipSet = true;
+ }
+ }
+
+ return EndUpdater(new LayerEndUpdate(shared_from_this()));
+ }
+
+ void Layer::endUpdate()
+ {
+ if( mbClipSet )
+ {
+ mbClipSet = false;
+
+ basegfx::B2DPolyPolygon aEmptyClip;
+ std::for_each( maViewEntries.begin(),
+ maViewEntries.end(),
+ boost::bind(
+ &ViewLayer::setClip,
+ boost::bind(
+ &ViewEntry::getViewLayer,
+ _1),
+ boost::cref(aEmptyClip)));
+ }
+
+ clearUpdateRanges();
+ }
+
+ bool Layer::isInsideUpdateArea( ShapeSharedPtr const& rShape ) const
+ {
+ return maUpdateAreas.overlaps( rShape->getUpdateArea() );
+ }
+
+ LayerSharedPtr Layer::createBackgroundLayer( const basegfx::B2DRange& rMaxLayerBounds )
+ {
+ return LayerSharedPtr(new Layer( rMaxLayerBounds,
+ BackgroundLayer ));
+ }
+
+ LayerSharedPtr Layer::createLayer( const basegfx::B2DRange& rMaxLayerBounds )
+ {
+ return LayerSharedPtr( new Layer( rMaxLayerBounds ) );
+ }
+
+ }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-12 16:38:02 +0000