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| -rw-r--r-- | slideshow/source/engine/shapes/intrinsicanimationactivity.cxx | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/slideshow/source/engine/shapes/intrinsicanimationactivity.cxx b/slideshow/source/engine/shapes/intrinsicanimationactivity.cxx new file mode 100644 index 000000000..bcc353e0d --- /dev/null +++ b/slideshow/source/engine/shapes/intrinsicanimationactivity.cxx @@ -0,0 +1,249 @@ +/* -*- 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 <tools/diagnose_ex.h> + +#include <subsettableshapemanager.hxx> +#include <eventqueue.hxx> +#include "intrinsicanimationactivity.hxx" +#include <intrinsicanimationeventhandler.hxx> + +#include <memory> + +namespace slideshow::internal +{ + namespace { + + /** Activity for intrinsic shape animations + + This is an Activity interface implementation for intrinsic + shape animations. Intrinsic shape animations are + animations directly within a shape, e.g. drawing layer + animations, or GIF animations. + */ + class IntrinsicAnimationActivity : public Activity + { + public: + /** Create an IntrinsicAnimationActivity. + + @param rContext + Common slideshow objects + + @param rDrawShape + Shape to control the intrinsic animation for + + @param rWakeupEvent + Externally generated wakeup event, to set this + activity to sleep during inter-frame intervals. Must + come from the outside, since wakeup event and this + object have mutual references to each other. + + @param rTimeouts + Vector of timeout values, to wait before the next + frame is shown. + */ + 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); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |