targetpropertiescreator.cxx

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#include <com/sun/star/animations/XIterateContainer.hpp>
#include <com/sun/star/presentation/ParagraphTarget.hpp>
#include <com/sun/star/drawing/XShape.hpp>
#include <com/sun/star/animations/AnimationNodeType.hpp>
#include <com/sun/star/animations/XAnimate.hpp>
#include <comphelper/sequence.hxx>
 
#include <unordered_map>
#include <utility>
#include <vector>
 
#include "targetpropertiescreator.hxx"
#include <tools.hxx>
 
namespace slideshow::internal
{
    namespace
    {
        // Vector containing all properties for a given shape
        typedef ::std::vector< beans::NamedValue > VectorOfNamedValues;
 
        struct ShapeHashKey
        {
            uno::Reference< drawing::XShape >   mxRef;
 
            sal_Int16                           mnParagraphIndex;
 
            bool operator==( const ShapeHashKey& rRHS ) const
            {
                return mxRef == rRHS.mxRef && mnParagraphIndex == rRHS.mnParagraphIndex;
            }
        };
 
        // A hash functor for ShapeHashKey objects
        struct ShapeKeyHasher
        {
            ::std::size_t operator()( const ShapeHashKey& rKey ) const
            {
                // TODO(P2): Maybe a better hash function would be to
                // spread mnParagraphIndex to 32 bit: a0b0c0d0e0... Hakmem
                // should have a formula.
 
                // Yes it has:
                // x = (x & 0x0000FF00) << 8) | (x >> 8) & 0x0000FF00 | x & 0xFF0000FF;
                // x = (x & 0x00F000F0) << 4) | (x >> 4) & 0x00F000F0 | x & 0xF00FF00F;
                // x = (x & 0x0C0C0C0C) << 2) | (x >> 2) & 0x0C0C0C0C | x & 0xC3C3C3C3;
                // x = (x & 0x22222222) << 1) | (x >> 1) & 0x22222222 | x & 0x99999999;
 
                // Costs about 17 cycles on a RISC machine with infinite
                // instruction level parallelism (~42 basic
                // instructions). Thus I truly doubt this pays off...
                return reinterpret_cast< ::std::size_t >(rKey.mxRef.get()) ^ (rKey.mnParagraphIndex << 16);
            }
        };
 
        // A hash map which maps a XShape to the corresponding vector of initial properties
        typedef std::unordered_map< ShapeHashKey, VectorOfNamedValues, ShapeKeyHasher > XShapeToNamedValuesMap;
 
 
        class NodeFunctor
        {
        public:
            explicit NodeFunctor(
                XShapeToNamedValuesMap& rShapeHash,
                bool bInitial )
            :   mrShapeHash( rShapeHash ),
                mxTargetShape(),
                mnParagraphIndex( -1 ),
                mbInitial( bInitial)
            {
            }
 
            NodeFunctor( XShapeToNamedValuesMap&                    rShapeHash,
                         uno::Reference< drawing::XShape >          xTargetShape,
                         sal_Int16                                  nParagraphIndex,
                         bool                                       bInitial) :
                mrShapeHash( rShapeHash ),
                mxTargetShape(std::move( xTargetShape )),
                mnParagraphIndex( nParagraphIndex ),
                mbInitial( bInitial )
            {
            }
 
            void operator()( const uno::Reference< animations::XAnimationNode >& xNode ) const
            {
                if( !xNode.is() )
                {
                    OSL_FAIL( "AnimCore: NodeFunctor::operator(): invalid XAnimationNode" );
                    return;
                }
 
                uno::Reference< drawing::XShape > xTargetShape( mxTargetShape );
                sal_Int16                         nParagraphIndex( mnParagraphIndex );
 
                switch( xNode->getType() )
                {
                    case animations::AnimationNodeType::ITERATE:
                    {
                        // extract target shape from iterate node
                        // (will override the target for all children)
 
                        uno::Reference< animations::XIterateContainer > xIterNode( xNode,
                                                                                   uno::UNO_QUERY );
 
                        // TODO(E1): I'm not too sure what to expect here...
                        if( !xIterNode->getTarget().hasValue() )
                        {
                            OSL_FAIL( "animcore: NodeFunctor::operator(): no target on ITERATE node" );
                            return;
                        }
 
                        xTargetShape.set( xIterNode->getTarget(),
                                          uno::UNO_QUERY );
 
                        if( !xTargetShape.is() )
                        {
                            css::presentation::ParagraphTarget aTarget;
 
                            // no shape provided. Maybe a ParagraphTarget?
                            if( !(xIterNode->getTarget() >>= aTarget) )
                            {
                                OSL_FAIL( "animcore: NodeFunctor::operator(): could not extract any "
                                            "target information" );
                                return;
                            }
 
                            xTargetShape = aTarget.Shape;
                            nParagraphIndex = aTarget.Paragraph;
 
                            if( !xTargetShape.is() )
                            {
                                OSL_FAIL( "animcore: NodeFunctor::operator(): invalid shape in ParagraphTarget" );
                                return;
                            }
                        }
                        [[fallthrough]];
                    }
                    case animations::AnimationNodeType::PAR:
                    case animations::AnimationNodeType::SEQ:
                    {
                        NodeFunctor aFunctor( mrShapeHash,
                                              xTargetShape,
                                              nParagraphIndex,
                                              mbInitial );
                        if( !for_each_childNode( xNode, aFunctor ) )
                        {
                            OSL_FAIL( "AnimCore: NodeFunctor::operator(): child node iteration failed, "
                                        "or extraneous container nodes encountered" );
                        }
                    }
                    break;
 
                    case animations::AnimationNodeType::CUSTOM:
                    case animations::AnimationNodeType::ANIMATE:
                    case animations::AnimationNodeType::ANIMATEMOTION:
                    case animations::AnimationNodeType::ANIMATECOLOR:
                    case animations::AnimationNodeType::ANIMATETRANSFORM:
                    case animations::AnimationNodeType::TRANSITIONFILTER:
                    case animations::AnimationNodeType::AUDIO:
                    /*default:
                        // ignore this node, no valuable content for now.
                        break;*/
 
                    case animations::AnimationNodeType::SET:
                    {
                        // evaluate set node content
                        uno::Reference< animations::XAnimate > xAnimateNode( xNode,
                                                                             uno::UNO_QUERY );
 
                        if( !xAnimateNode.is() )
                            break; // invalid node
 
                        // determine target shape (if any)
                        ShapeHashKey aTarget;
                        if( xTargetShape.is() )
                        {
                            // override target shape with parent-supplied
                            aTarget.mxRef = xTargetShape;
                            aTarget.mnParagraphIndex = nParagraphIndex;
                        }
                        else
                        {
                            // no parent-supplied target, retrieve
                            // node target
                            if( xAnimateNode->getTarget() >>= aTarget.mxRef )
                            {
                                // pure shape target - set paragraph
                                // index to magic
                                aTarget.mnParagraphIndex = -1;
                            }
                            else
                            {
                                // not a pure shape target - maybe a
                                // ParagraphTarget?
                                presentation::ParagraphTarget aUnoTarget;
 
                                if( !(xAnimateNode->getTarget() >>= aUnoTarget) )
                                {
                                    OSL_FAIL( "AnimCore: NodeFunctor::operator(): unknown target type encountered" );
                                    break;
                                }
 
                                aTarget.mxRef = aUnoTarget.Shape;
                                aTarget.mnParagraphIndex = aUnoTarget.Paragraph;
                            }
                        }
 
                        if( !aTarget.mxRef.is() )
                        {
                            OSL_FAIL( "AnimCore: NodeFunctor::operator(): Found target, but XShape is NULL" );
                            break; // invalid target XShape
                        }
 
                        // check whether we already have an entry for
                        // this target (we only take the first set
                        // effect for every shape) - but keep going if
                        // we're requested the final state (which
                        // eventually gets overwritten in the
                        // unordered list, see tdf#96083)
                        if( mbInitial && mrShapeHash.find( aTarget ) != mrShapeHash.end() )
                            break; // already an entry in existence for given XShape
 
                        // if this is an appear effect, hide shape
                        // initially. This is currently the only place
                        // where a shape effect influences shape
                        // attributes outside it's effective duration.
                        bool bVisible( false );
                        if( xAnimateNode->getAttributeName().equalsIgnoreAsciiCase("visibility") )
                        {
 
                            uno::Any aAny( xAnimateNode->getTo() );
 
                            // try to extract bool value
                            if( !(aAny >>= bVisible) )
                            {
                                // try to extract string
                                OUString aString;
                                if( aAny >>= aString )
                                {
                                    // we also take the strings "true" and "false",
                                    // as well as "on" and "off" here
                                    if( aString.equalsIgnoreAsciiCase("true") ||
                                        aString.equalsIgnoreAsciiCase("on") )
                                    {
                                        bVisible = true;
                                    }
                                    if( aString.equalsIgnoreAsciiCase("false") ||
                                        aString.equalsIgnoreAsciiCase("off") )
                                    {
                                        bVisible = false;
                                    }
                                }
                            }
                        }
 
                        // if initial anim sets shape visible, set it
                        // to invisible. If we're asked for the final
                        // state, don't do anything obviously
                        if(mbInitial)
                            bVisible = !bVisible;
 
                        // target is set the 'visible' value,
                        // so we should record the opposite value
                        mrShapeHash.emplace(
                                        aTarget,
                                        VectorOfNamedValues(
                                            1,
                                            beans::NamedValue(
                                                //xAnimateNode->getAttributeName(),
                                                "visibility",
                                                uno::Any( bVisible ) ) ) );
                        break;
                    }
                }
            }
 
        private:
            XShapeToNamedValuesMap&             mrShapeHash;
            uno::Reference< drawing::XShape >   mxTargetShape;
            sal_Int16                           mnParagraphIndex;
 
            // get initial or final state
            bool                                mbInitial;
        };
    }
 
    uno::Sequence< animations::TargetProperties > TargetPropertiesCreator::createTargetProperties
        (
            const uno::Reference< animations::XAnimationNode >& xRootNode,
            bool bInitial
        ) //throw (uno::RuntimeException, std::exception)
    {
        // scan all nodes for visibility changes, and record first
        // 'visibility=true' for each shape
        XShapeToNamedValuesMap aShapeHash( 101 );
 
        NodeFunctor aFunctor(
            aShapeHash,
            bInitial );
 
        // TODO(F1): Maybe limit functor application to main sequence
        // alone (CL said something that shape visibility is only
        // affected by effects in the main sequence for PPT).
 
        // OTOH, client code can pass us only the main sequence (which
        // it actually does right now, for the slideshow implementation).
        aFunctor( xRootNode );
 
        // output to result sequence
        uno::Sequence< animations::TargetProperties > aRes( aShapeHash.size() );
        auto aResRange = asNonConstRange(aRes);
 
        ::std::size_t                       nCurrIndex(0);
        for( const auto& rIter : aShapeHash )
        {
            animations::TargetProperties& rCurrProps( aResRange[ nCurrIndex++ ] );
 
            if( rIter.first.mnParagraphIndex == -1 )
            {
                rCurrProps.Target <<= rIter.first.mxRef;
            }
            else
            {
                rCurrProps.Target <<=
                    presentation::ParagraphTarget(
                        rIter.first.mxRef,
                        rIter.first.mnParagraphIndex );
            }
 
            rCurrProps.Properties = ::comphelper::containerToSequence( rIter.second );
        }
 
        return aRes;
    }
 
} // namespace slideshow::internal
 
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