activitiesfactory.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   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 .
 */
 
 
#include <comphelper/diagnose_ex.hxx>
 
#include <com/sun/star/animations/AnimationCalcMode.hpp>
#include <comphelper/sequence.hxx>
 
#include <activitiesfactory.hxx>
#include <slideshowexceptions.hxx>
#include <smilfunctionparser.hxx>
#include "accumulation.hxx"
#include "activityparameters.hxx"
#include "interpolation.hxx"
#include <tools.hxx>
#include "simplecontinuousactivitybase.hxx"
#include "discreteactivitybase.hxx"
#include "continuousactivitybase.hxx"
#include "continuouskeytimeactivitybase.hxx"
 
#include <optional>
 
#include <memory>
#include <utility>
#include <vector>
#include <algorithm>
 
using namespace com::sun::star;
 
namespace slideshow::internal {
 
namespace {
 
template<typename ValueType> struct FormulaTraits
{
    static ValueType getPresentationValue(
        const ValueType& rVal, const std::shared_ptr<ExpressionNode>& )
    {
        return rVal;
    }
};
 
template<> struct FormulaTraits<double>
{
    static double getPresentationValue(
        double const& rVal, std::shared_ptr<ExpressionNode> const& rFormula )
    {
        return rFormula ? (*rFormula)(rVal) : rVal;
    }
};
 
// Various ActivityBase specializations for different animator types
// =================================================================
 
template<class BaseType, typename AnimationType>
class FromToByActivity : public BaseType
{
public:
    typedef typename AnimationType::ValueType           ValueType;
    typedef std::optional<ValueType>                  OptionalValueType;
 
private:
    // some compilers don't inline whose definition they haven't
    // seen before the call site...
    ValueType getPresentationValue( const ValueType& rVal ) const
    {
        return FormulaTraits<ValueType>::getPresentationValue( rVal, mpFormula);
    }
 
public:
    FromToByActivity(
        OptionalValueType                             aFrom,
        const OptionalValueType&                      rTo,
        const OptionalValueType&                      rBy,
        const ActivityParameters&                     rParms,
        ::std::shared_ptr< AnimationType >            xAnim,
        const Interpolator< ValueType >&              rInterpolator,
        bool                                          bCumulative )
        : BaseType( rParms ),
          maFrom(std::move( aFrom )),
          maTo( rTo ),
          maBy( rBy ),
          mpFormula( rParms.mpFormula ),
          maStartValue(),
          maEndValue(),
          maPreviousValue(),
          maStartInterpolationValue(),
          mnIteration( 0 ),
          mpAnim(std::move( xAnim )),
          maInterpolator( rInterpolator ),
          mbDynamicStartValue( false ),
          mbCumulative( bCumulative )
    {
        ENSURE_OR_THROW( mpAnim, "Invalid animation object" );
 
        ENSURE_OR_THROW(
            rTo || rBy,
            "From and one of To or By, or To or By alone must be valid" );
    }
 
    virtual void startAnimation()
    {
        if (this->isDisposed() || !mpAnim)
            return;
        BaseType::startAnimation();
 
        // start animation
        mpAnim->start( BaseType::getShape(),
                       BaseType::getShapeAttributeLayer() );
 
        // setup start and end value. Determine animation
        // start value only when animation actually
        // started up (this order is part of the Animation
        // interface contract)
        const ValueType aAnimationStartValue( mpAnim->getUnderlyingValue() );
 
        // first of all, determine general type of
        // animation, by inspecting which of the FromToBy values
        // are actually valid.
        // See http://www.w3.org/TR/smil20/animation.html#AnimationNS-FromToBy
        // for a definition
        if( maFrom )
        {
            // From-to or From-by animation. According to
            // SMIL spec, the To value takes precedence
            // over the By value, if both are specified
            if( maTo )
            {
                // From-To animation
                maStartValue = *maFrom;
                maEndValue = *maTo;
            }
            else if( maBy )
            {
                // From-By animation
                maStartValue = *maFrom;
                maEndValue = maStartValue + *maBy;
            }
            maStartInterpolationValue = maStartValue;
        }
        else
        {
            maStartValue = aAnimationStartValue;
            maStartInterpolationValue = maStartValue;
 
            // By or To animation. According to SMIL spec,
            // the To value takes precedence over the By
            // value, if both are specified
            if( maTo )
            {
                // To animation
 
                // According to the SMIL spec
                // (http://www.w3.org/TR/smil20/animation.html#animationNS-ToAnimation),
                // the to animation interpolates between
                // the _running_ underlying value and the to value (as the end value)
                mbDynamicStartValue = true;
                maPreviousValue = maStartValue;
                maEndValue = *maTo;
            }
            else if( maBy )
            {
                // By animation
                maStartValue = aAnimationStartValue;
                maEndValue = maStartValue + *maBy;
            }
        }
    }
 
    virtual void endAnimation()
    {
        // end animation
        if (mpAnim)
            mpAnim->end();
    }
 
    void perform( double nModifiedTime, sal_uInt32 nRepeatCount ) const
    {
        if (this->isDisposed() || !mpAnim)
            return;
 
        // According to SMIL 3.0 spec 'to' animation if no other (lower priority)
        // animations are active or frozen then a simple interpolation is performed.
        // That is, the start interpolation value is constant while the animation
        // is running, and is equal to the underlying value retrieved when
        // the animation start.
        // However if another animation is manipulating the underlying value,
        // the 'to' animation will initially add to the effect of the lower priority
        // animation, and increasingly dominate it as it nears the end of the
        // simple duration, eventually overriding it completely.
        // That is, each time the underlying value is changed between two
        // computations of the animation function the new underlying value is used
        // as start value for the interpolation.
        // See:
        // http://www.w3.org/TR/SMIL3/smil-animation.html#animationNS-ToAnimation
        // (Figure 6 - Effect of Additive to animation example)
        // Moreover when a 'to' animation is repeated, at each new iteration
        // the start interpolation value is reset to the underlying value
        // of the animated property when the animation started,
        // as it is shown in the example provided by the SMIL 3.0 spec.
        // This is exactly as Firefox performs SVG 'to' animations.
        if( mbDynamicStartValue )
        {
            if( mnIteration != nRepeatCount )
            {
                mnIteration = nRepeatCount;
                maStartInterpolationValue = maStartValue;
            }
            else
            {
                ValueType aActualValue = mpAnim->getUnderlyingValue();
                if( aActualValue != maPreviousValue )
                    maStartInterpolationValue = aActualValue;
            }
        }
 
        ValueType aValue = maInterpolator( maStartInterpolationValue,
                                           maEndValue, nModifiedTime );
 
        // According to the SMIL spec:
        // Because 'to' animation is defined in terms of absolute values of
        // the target attribute, cumulative animation is not defined.
        if( mbCumulative && !mbDynamicStartValue )
        {
            // aValue = this.aEndValue * nRepeatCount + aValue;
            aValue = accumulate( maEndValue, nRepeatCount, aValue );
        }
 
        (*mpAnim)( getPresentationValue( aValue ) );
 
        if( mbDynamicStartValue )
        {
            maPreviousValue = mpAnim->getUnderlyingValue();
        }
 
    }
 
    using BaseType::perform;
 
    void perform( sal_uInt32 nFrame, sal_uInt32 nRepeatCount ) const
    {
        if (this->isDisposed() || !mpAnim)
            return;
        (*mpAnim)(
            getPresentationValue(
                accumulate( maEndValue, mbCumulative ? nRepeatCount : 0,
                            lerp( maInterpolator,
                                  (mbDynamicStartValue
                                   ? mpAnim->getUnderlyingValue()
                                   : maStartValue),
                                  maEndValue,
                                  nFrame,
                                  BaseType::getNumberOfKeyTimes() ) ) ) );
    }
 
    using BaseType::isAutoReverse;
 
    virtual void performEnd()
    {
        // xxx todo: good guess
        if (mpAnim)
        {
            if (isAutoReverse())
                (*mpAnim)( getPresentationValue( maStartValue ) );
            else
                (*mpAnim)( getPresentationValue( maEndValue ) );
        }
    }
 
    virtual void dispose()
    {
        mpAnim.reset();
        BaseType::dispose();
    }
 
private:
    const OptionalValueType                 maFrom;
    const OptionalValueType                 maTo;
    const OptionalValueType                 maBy;
 
    std::shared_ptr<ExpressionNode>                 mpFormula;
 
    ValueType                               maStartValue;
    ValueType                               maEndValue;
 
    mutable ValueType                               maPreviousValue;
    mutable ValueType                               maStartInterpolationValue;
    mutable sal_uInt32                              mnIteration;
 
    ::std::shared_ptr< AnimationType >    mpAnim;
    Interpolator< ValueType >               maInterpolator;
    bool                                    mbDynamicStartValue;
    bool                                    mbCumulative;
};
 
 
template<class BaseType, typename AnimationType>
AnimationActivitySharedPtr createFromToByActivity(
    const uno::Any&                                          rFromAny,
    const uno::Any&                                          rToAny,
    const uno::Any&                                          rByAny,
    const ActivityParameters&                                rParms,
    const ::std::shared_ptr< AnimationType >&              rAnim,
    const Interpolator< typename AnimationType::ValueType >& rInterpolator,
    bool                                                     bCumulative,
    const ShapeSharedPtr&                                    rShape,
    const ::basegfx::B2DVector&                              rSlideBounds )
{
    typedef typename AnimationType::ValueType           ValueType;
    typedef std::optional<ValueType>                  OptionalValueType;
 
    OptionalValueType aFrom;
    OptionalValueType aTo;
    OptionalValueType aBy;
 
    ValueType aTmpValue;
 
    if( rFromAny.hasValue() )
    {
        ENSURE_OR_THROW(
            extractValue( aTmpValue, rFromAny, rShape, rSlideBounds ),
            "createFromToByActivity(): Could not extract from value" );
        aFrom = aTmpValue;
    }
    if( rToAny.hasValue() )
    {
        ENSURE_OR_THROW(
            extractValue( aTmpValue, rToAny, rShape, rSlideBounds ),
            "createFromToByActivity(): Could not extract to value" );
        aTo = aTmpValue;
    }
    if( rByAny.hasValue() )
    {
        ENSURE_OR_THROW(
            extractValue( aTmpValue, rByAny, rShape, rSlideBounds ),
            "createFromToByActivity(): Could not extract by value" );
        aBy = aTmpValue;
    }
 
    return std::make_shared<FromToByActivity<BaseType, AnimationType>>(
            aFrom,
            aTo,
            aBy,
            rParms,
            rAnim,
            rInterpolator,
            bCumulative );
}
 
/* The following table shows which animator combines with
   which Activity type:
 
   NumberAnimator:  all
   PairAnimation:   all
   ColorAnimation:  all
   StringAnimation: DiscreteActivityBase
   BoolAnimation:   DiscreteActivityBase
*/
 
template<class BaseType, typename AnimationType>
class ValuesActivity : public BaseType
{
public:
    typedef typename AnimationType::ValueType   ValueType;
    typedef std::vector<ValueType>              ValueVectorType;
 
private:
    // some compilers don't inline methods whose definition they haven't
    // seen before the call site...
    ValueType getPresentationValue( const ValueType& rVal ) const
    {
        return FormulaTraits<ValueType>::getPresentationValue(
            rVal, mpFormula );
    }
 
public:
    ValuesActivity(
        const ValueVectorType&                      rValues,
        const ActivityParameters&                   rParms,
        std::shared_ptr<AnimationType>              xAnim,
        const Interpolator< ValueType >&            rInterpolator,
        bool                                        bCumulative )
        : BaseType( rParms ),
          maValues( rValues ),
          mpFormula( rParms.mpFormula ),
          mpAnim(std::move( xAnim )),
          maInterpolator( rInterpolator ),
          mbCumulative( bCumulative )
    {
        ENSURE_OR_THROW( mpAnim, "Invalid animation object" );
        ENSURE_OR_THROW( !rValues.empty(), "Empty value vector" );
    }
 
    virtual void startAnimation()
    {
        if (this->isDisposed() || !mpAnim)
            return;
        BaseType::startAnimation();
 
        // start animation
        mpAnim->start( BaseType::getShape(),
                       BaseType::getShapeAttributeLayer() );
    }
 
    virtual void endAnimation()
    {
        // end animation
        if (mpAnim)
            mpAnim->end();
    }
 
    void perform( sal_uInt32    nIndex,
                  double        nFractionalIndex,
                  sal_uInt32    nRepeatCount ) const
    {
        if (this->isDisposed() || !mpAnim)
            return;
        ENSURE_OR_THROW( nIndex+1 < maValues.size(),
                          "ValuesActivity::perform(): index out of range" );
 
        // interpolate between nIndex and nIndex+1 values
        (*mpAnim)(
            getPresentationValue(
                accumulate<ValueType>( maValues.back(),
                            mbCumulative ? nRepeatCount : 0,
                            maInterpolator( maValues[ nIndex ],
                                            maValues[ nIndex+1 ],
                                            nFractionalIndex ) ) ) );
    }
 
    using BaseType::perform;
 
    void perform( sal_uInt32 nFrame, sal_uInt32 nRepeatCount ) const
    {
        if (this->isDisposed() || !mpAnim)
            return;
        ENSURE_OR_THROW( nFrame < maValues.size(),
                          "ValuesActivity::perform(): index out of range" );
 
        // this is discrete, thus no lerp here.
        (*mpAnim)(
            getPresentationValue(
                slideshow::internal::accumulate<ValueType>( maValues.back(),
                            mbCumulative ? nRepeatCount : 0,
                            maValues[ nFrame ] ) ) );
    }
 
    virtual void performEnd()
    {
        // xxx todo: good guess
        if (mpAnim)
            (*mpAnim)( getPresentationValue( maValues.back() ) );
    }
 
private:
    ValueVectorType                         maValues;
 
    std::shared_ptr<ExpressionNode>                 mpFormula;
 
    std::shared_ptr<AnimationType>        mpAnim;
    Interpolator< ValueType >               maInterpolator;
    bool                                    mbCumulative;
};
 
template<class BaseType, typename AnimationType>
AnimationActivitySharedPtr createValueListActivity(
    const uno::Sequence<uno::Any>&                            rValues,
    const ActivityParameters&                                 rParms,
    const std::shared_ptr<AnimationType>&                   rAnim,
    const Interpolator<typename AnimationType::ValueType>&    rInterpolator,
    bool                                                      bCumulative,
    const ShapeSharedPtr&                                     rShape,
    const ::basegfx::B2DVector&                               rSlideBounds )
{
    typedef typename AnimationType::ValueType   ValueType;
    typedef std::vector<ValueType>              ValueVectorType;
 
    ValueVectorType aValueVector;
    aValueVector.reserve( rValues.getLength() );
 
    for( const auto& rValue : rValues )
    {
        ValueType aValue;
        ENSURE_OR_THROW(
            extractValue( aValue, rValue, rShape, rSlideBounds ),
            "createValueListActivity(): Could not extract values" );
        aValueVector.push_back( aValue );
    }
 
    return std::make_shared<ValuesActivity<BaseType, AnimationType>>(
            aValueVector,
            rParms,
            rAnim,
            rInterpolator,
            bCumulative );
}
 
template<typename AnimationType>
AnimationActivitySharedPtr createActivity(
    const ActivitiesFactory::CommonParameters&               rParms,
    const uno::Reference< animations::XAnimate >&            xNode,
    const ::std::shared_ptr< AnimationType >&              rAnim,
    const Interpolator< typename AnimationType::ValueType >& rInterpolator
    = Interpolator< typename AnimationType::ValueType >() )
{
    // setup common parameters
    // =======================
 
    ActivityParameters aActivityParms( rParms.mpEndEvent,
                                       rParms.mrEventQueue,
                                       rParms.mrActivitiesQueue,
                                       rParms.mnMinDuration,
                                       rParms.maRepeats,
                                       rParms.mnAcceleration,
                                       rParms.mnDeceleration,
                                       rParms.mnMinNumberOfFrames,
                                       rParms.mbAutoReverse );
 
    // is a formula given?
    const OUString& rFormulaString( xNode->getFormula() );
    if( !rFormulaString.isEmpty() )
    {
        // yep, parse and pass to ActivityParameters
        try
        {
            aActivityParms.mpFormula =
                SmilFunctionParser::parseSmilFunction(
                    rFormulaString,
                    calcRelativeShapeBounds(
                        rParms.maSlideBounds,
                        rParms.mpShape->getBounds() ) );
        }
        catch( ParseError& )
        {
            // parse error, thus no formula
            OSL_FAIL( "createActivity(): Error parsing formula string" );
        }
    }
 
    // are key times given?
    const uno::Sequence< double >& aKeyTimes( xNode->getKeyTimes() );
    if( aKeyTimes.hasElements() )
    {
        // yes, convert them from Sequence< double >
        aActivityParms.maDiscreteTimes.resize( aKeyTimes.getLength() );
        comphelper::sequenceToArray(
            aActivityParms.maDiscreteTimes.data(),
            aKeyTimes ); // saves us some temporary vectors
    }
 
    // values sequence given?
    const sal_Int32 nValueLen( xNode->getValues().getLength() );
    if( nValueLen )
    {
        // Value list activity
        // ===================
 
        // fake keytimes, if necessary
        if( !aKeyTimes.hasElements() )
        {
            // create a dummy vector of key times,
            // with aValues.getLength equally spaced entries.
            for( sal_Int32 i=0; i<nValueLen; ++i )
                aActivityParms.maDiscreteTimes.push_back( double(i)/nValueLen );
        }
 
        // determine type of animation needed here:
        // Value list activities are possible with
        // ContinuousKeyTimeActivityBase and DiscreteActivityBase
        // specializations
        const sal_Int16 nCalcMode( xNode->getCalcMode() );
 
        switch( nCalcMode )
        {
            case animations::AnimationCalcMode::DISCRETE:
            {
                // since DiscreteActivityBase suspends itself
                // between the frames, create a WakeupEvent for it.
                aActivityParms.mpWakeupEvent =
                    std::make_shared<WakeupEvent>(
                        rParms.mrEventQueue.getTimer(),
                        rParms.mrActivitiesQueue );
 
                AnimationActivitySharedPtr pActivity(
                    createValueListActivity< DiscreteActivityBase >(
                        xNode->getValues(),
                        aActivityParms,
                        rAnim,
                        rInterpolator,
                        xNode->getAccumulate(),
                        rParms.mpShape,
                        rParms.maSlideBounds ) );
 
                // WakeupEvent and DiscreteActivityBase need circular
                // references to the corresponding other object.
                aActivityParms.mpWakeupEvent->setActivity( pActivity );
 
                return pActivity;
            }
 
            default:
                OSL_FAIL( "createActivity(): unexpected case" );
                [[fallthrough]];
            case animations::AnimationCalcMode::PACED:
            case animations::AnimationCalcMode::SPLINE:
            case animations::AnimationCalcMode::LINEAR:
                return createValueListActivity< ContinuousKeyTimeActivityBase >(
                    xNode->getValues(),
                    aActivityParms,
                    rAnim,
                    rInterpolator,
                    xNode->getAccumulate(),
                    rParms.mpShape,
                    rParms.maSlideBounds );
        }
    }
    else
    {
        // FromToBy activity
        // =================
 
        // determine type of animation needed here:
        // FromToBy activities are possible with
        // ContinuousActivityBase and DiscreteActivityBase
        // specializations
        const sal_Int16 nCalcMode( xNode->getCalcMode() );
 
        switch( nCalcMode )
        {
            case animations::AnimationCalcMode::DISCRETE:
            {
                // fake keytimes, if necessary
                if( !aKeyTimes.hasElements() )
                {
                    // create a dummy vector of 2 key times
                    const ::std::size_t nLen( 2 );
                    for( ::std::size_t i=0; i<nLen; ++i )
                        aActivityParms.maDiscreteTimes.push_back( double(i)/nLen );
                }
 
                // since DiscreteActivityBase suspends itself
                // between the frames, create a WakeupEvent for it.
                aActivityParms.mpWakeupEvent =
                    std::make_shared<WakeupEvent>(
                        rParms.mrEventQueue.getTimer(),
                        rParms.mrActivitiesQueue );
 
                AnimationActivitySharedPtr pActivity(
                    createFromToByActivity< DiscreteActivityBase >(
                        xNode->getFrom(),
                        xNode->getTo(),
                        xNode->getBy(),
                        aActivityParms,
                        rAnim,
                        rInterpolator,
                        xNode->getAccumulate(),
                        rParms.mpShape,
                        rParms.maSlideBounds ) );
 
                // WakeupEvent and DiscreteActivityBase need circular
                // references to the corresponding other object.
                aActivityParms.mpWakeupEvent->setActivity( pActivity );
 
                return pActivity;
            }
 
            default:
                OSL_FAIL( "createActivity(): unexpected case" );
                [[fallthrough]];
            case animations::AnimationCalcMode::PACED:
            case animations::AnimationCalcMode::SPLINE:
            case animations::AnimationCalcMode::LINEAR:
                return createFromToByActivity< ContinuousActivityBase >(
                    xNode->getFrom(),
                    xNode->getTo(),
                    xNode->getBy(),
                    aActivityParms,
                    rAnim,
                    rInterpolator,
                    xNode->getAccumulate(),
                    rParms.mpShape,
                    rParms.maSlideBounds );
        }
    }
}
 
template<int Direction>
class SimpleActivity : public ContinuousActivityBase
{
public:
    SimpleActivity( const ActivityParameters&       rParms,
                    NumberAnimationSharedPtr        xAnim ) :
        ContinuousActivityBase( rParms ),
        mpAnim(std::move( xAnim ))
    {
        ENSURE_OR_THROW( mpAnim, "Invalid animation object" );
    }
 
    virtual void startAnimation() override
    {
        if (this->isDisposed() || !mpAnim)
            return;
        ContinuousActivityBase::startAnimation();
 
        // start animation
        mpAnim->start( getShape(),
                       getShapeAttributeLayer() );
    }
 
    virtual void endAnimation() override
    {
        // end animation
        if (mpAnim)
            mpAnim->end();
    }
 
    using SimpleContinuousActivityBase::perform;
 
    virtual void perform( double nModifiedTime, sal_uInt32 ) const override
    {
        if (this->isDisposed() || !mpAnim)
            return;
        // no cumulation, simple [0,1] range
        (*mpAnim)( 1.0 - Direction + nModifiedTime*(2.0*Direction - 1.0) );
    }
 
    virtual void performEnd() override
    {
        // xxx todo: review
        if (mpAnim)
            (*mpAnim)( 1.0*Direction );
    }
 
    virtual void dispose() override
    {
        mpAnim.reset();
        ContinuousActivityBase::dispose();
    }
 
private:
    NumberAnimationSharedPtr    mpAnim;
};
 
} // anon namespace
 
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const NumberAnimationSharedPtr&                rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const EnumAnimationSharedPtr&                  rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const ColorAnimationSharedPtr&                 rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                            rParms,
    const HSLColorAnimationSharedPtr&                  rAnim,
    const uno::Reference< animations::XAnimateColor >& xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms,
                           uno::Reference< animations::XAnimate >(
                               xNode, uno::UNO_QUERY_THROW ),
                           rAnim,
                           // Direction==true means clockwise in SMIL API
                           Interpolator< HSLColor >( !xNode->getDirection() ) );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const PairAnimationSharedPtr&                  rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const StringAnimationSharedPtr&                rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createAnimateActivity(
    const CommonParameters&                        rParms,
    const BoolAnimationSharedPtr&                  rAnim,
    const uno::Reference< animations::XAnimate >&  xNode )
{
    // forward to appropriate template instantiation
    return createActivity( rParms, xNode, rAnim );
}
 
AnimationActivitySharedPtr ActivitiesFactory::createSimpleActivity(
    const CommonParameters&         rParms,
    const NumberAnimationSharedPtr& rAnim,
    bool                            bDirectionForward )
{
    ActivityParameters aActivityParms( rParms.mpEndEvent,
                                       rParms.mrEventQueue,
                                       rParms.mrActivitiesQueue,
                                       rParms.mnMinDuration,
                                       rParms.maRepeats,
                                       rParms.mnAcceleration,
                                       rParms.mnDeceleration,
                                       rParms.mnMinNumberOfFrames,
                                       rParms.mbAutoReverse );
 
    if( bDirectionForward )
        return std::make_shared<SimpleActivity<1>>( aActivityParms, rAnim );
    else
        return std::make_shared<SimpleActivity<0>>( aActivityParms, rAnim );
}
 
} // namespace presentation
 
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