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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 <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,
const ::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,
const ::std::vector<double>& rTimeouts,
::std::size_t nNumLoops ) :
maContext( rContext ),
mpDrawShape( rDrawShape ),
mpWakeupEvent( rWakeupEvent ),
mpListener( std::make_shared<IntrinsicAnimationListener>(*this) ),
maTimeouts( 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( !rTimeouts.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,
const ::std::vector<double>& rTimeouts,
sal_uInt32 nNumLoops)
{
return std::make_shared<IntrinsicAnimationActivity>(rContext,
rDrawShape,
rWakeupEvent,
rTimeouts,
nNumLoops);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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