intrinsicanimationactivity.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <comphelper/diagnose_ex.hxx>
 
#include <subsettableshapemanager.hxx>
#include <eventqueue.hxx>
#include "intrinsicanimationactivity.hxx"
#include <intrinsicanimationeventhandler.hxx>
 
#include <memory>
 
namespace slideshow::internal
{
        namespace {
 
        class IntrinsicAnimationActivity : public Activity
        {
        public:
            IntrinsicAnimationActivity( const SlideShowContext&         rContext,
                                        const DrawShapeSharedPtr&       rDrawShape,
                                        const WakeupEventSharedPtr&     rWakeupEvent,
                                        ::std::vector<double>&&         rTimeouts,
                                        ::std::size_t                   nNumLoops );
            IntrinsicAnimationActivity(const IntrinsicAnimationActivity&) = delete;
            IntrinsicAnimationActivity& operator=(const IntrinsicAnimationActivity&) = delete;
 
            virtual void dispose() override;
            virtual double calcTimeLag() const override;
            virtual bool perform() override;
            virtual bool isActive() const override;
            virtual void dequeued() override;
            virtual void end() override;
 
            bool enableAnimations();
 
        private:
            SlideShowContext                        maContext;
            std::weak_ptr<DrawShape>              mpDrawShape;
            WakeupEventSharedPtr                    mpWakeupEvent;
            IntrinsicAnimationEventHandlerSharedPtr mpListener;
            ::std::vector<double>                   maTimeouts;
            ::std::size_t                           mnCurrIndex;
            ::std::size_t                           mnNumLoops;
            ::std::size_t                           mnLoopCount;
            bool                                    mbIsActive;
        };
 
 
        class IntrinsicAnimationListener : public IntrinsicAnimationEventHandler
        {
        public:
            explicit IntrinsicAnimationListener( IntrinsicAnimationActivity& rActivity ) :
                mrActivity( rActivity )
            {}
            IntrinsicAnimationListener(const IntrinsicAnimationListener&) = delete;
            IntrinsicAnimationListener& operator=(const IntrinsicAnimationListener&) = delete;
 
        private:
 
            virtual bool enableAnimations() override { return mrActivity.enableAnimations(); }
            virtual bool disableAnimations() override { mrActivity.end(); return true; }
 
            IntrinsicAnimationActivity& mrActivity;
        };
 
        }
 
        IntrinsicAnimationActivity::IntrinsicAnimationActivity( const SlideShowContext&         rContext,
                                                                const DrawShapeSharedPtr&       rDrawShape,
                                                                const WakeupEventSharedPtr&     rWakeupEvent,
                                                                ::std::vector<double>&&         rTimeouts,
                                                                ::std::size_t                   nNumLoops ) :
            maContext( rContext ),
            mpDrawShape( rDrawShape ),
            mpWakeupEvent( rWakeupEvent ),
            mpListener( std::make_shared<IntrinsicAnimationListener>(*this) ),
            maTimeouts( std::move(rTimeouts) ),
            mnCurrIndex(0),
            mnNumLoops(nNumLoops),
            mnLoopCount(0),
            mbIsActive(false)
        {
            ENSURE_OR_THROW( rContext.mpSubsettableShapeManager,
                              "IntrinsicAnimationActivity::IntrinsicAnimationActivity(): Invalid shape manager" );
            ENSURE_OR_THROW( rDrawShape,
                              "IntrinsicAnimationActivity::IntrinsicAnimationActivity(): Invalid draw shape" );
            ENSURE_OR_THROW( rWakeupEvent,
                              "IntrinsicAnimationActivity::IntrinsicAnimationActivity(): Invalid wakeup event" );
            ENSURE_OR_THROW( !maTimeouts.empty(),
                              "IntrinsicAnimationActivity::IntrinsicAnimationActivity(): Empty timeout vector" );
 
            maContext.mpSubsettableShapeManager->addIntrinsicAnimationHandler(
                mpListener );
        }
 
        void IntrinsicAnimationActivity::dispose()
        {
            end();
 
            if( mpWakeupEvent )
                mpWakeupEvent->dispose();
 
            maContext.dispose();
            mpDrawShape.reset();
            mpWakeupEvent.reset();
            maTimeouts.clear();
            mnCurrIndex = 0;
 
            maContext.mpSubsettableShapeManager->removeIntrinsicAnimationHandler(
                mpListener );
        }
 
        double IntrinsicAnimationActivity::calcTimeLag() const
        {
            return 0.0;
        }
 
        bool IntrinsicAnimationActivity::perform()
        {
            if( !isActive() )
                return false;
 
            DrawShapeSharedPtr pDrawShape( mpDrawShape.lock() );
            if( !pDrawShape || !mpWakeupEvent )
            {
                // event or draw shape vanished, no sense living on ->
                // commit suicide.
                dispose();
                return false;
            }
 
            const ::std::size_t nNumFrames(maTimeouts.size());
 
            // mnNumLoops == 0 means infinite looping
            if( mnNumLoops != 0 &&
                mnLoopCount >= mnNumLoops )
            {
                // #i55294# After finishing the loops, display the last frame
                // powerpoint 2013 and firefox etc show the last frame when
                // the animation ends
                pDrawShape->setIntrinsicAnimationFrame(nNumFrames - 1);
                maContext.mpSubsettableShapeManager->notifyShapeUpdate( pDrawShape );
 
                end();
 
                return false;
            }
 
            ::std::size_t       nNewIndex = 0;
 
            pDrawShape->setIntrinsicAnimationFrame( mnCurrIndex );
 
            mpWakeupEvent->start();
            mpWakeupEvent->setNextTimeout( maTimeouts[mnCurrIndex] );
 
            mnLoopCount += (mnCurrIndex + 1) / nNumFrames;
            nNewIndex = (mnCurrIndex + 1) % nNumFrames;
 
            maContext.mrEventQueue.addEvent( mpWakeupEvent );
            maContext.mpSubsettableShapeManager->notifyShapeUpdate( pDrawShape );
            mnCurrIndex = nNewIndex;
 
            return false; // don't reinsert, WakeupEvent will perform
                          // that after the given timeout
        }
 
        bool IntrinsicAnimationActivity::isActive() const
        {
            return mbIsActive;
        }
 
        void IntrinsicAnimationActivity::dequeued()
        {
            // not used here
        }
 
        void IntrinsicAnimationActivity::end()
        {
            // there is no dedicated end state, just become inactive:
            mbIsActive = false;
        }
 
        bool IntrinsicAnimationActivity::enableAnimations()
        {
            mbIsActive = true;
            return maContext.mrActivitiesQueue.addActivity( std::dynamic_pointer_cast<Activity>(shared_from_this()) );
 
        }
 
 
        ActivitySharedPtr createIntrinsicAnimationActivity(
            const SlideShowContext&         rContext,
            const DrawShapeSharedPtr&       rDrawShape,
            const WakeupEventSharedPtr&     rWakeupEvent,
            ::std::vector<double>&&         rTimeouts,
            sal_uInt32                      nNumLoops)
        {
            return std::make_shared<IntrinsicAnimationActivity>(rContext,
                                               rDrawShape,
                                               rWakeupEvent,
                                               std::move(rTimeouts),
                                               nNumLoops);
        }
}
 
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