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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 .
*/
#ifndef INCLUDED_SLIDESHOW_ACTIVITYBASE_HXX
#define INCLUDED_SLIDESHOW_ACTIVITYBASE_HXX
#include "animationactivity.hxx"
#include "activityparameters.hxx"
#include "animatableshape.hxx"
#include "shapeattributelayer.hxx"
namespace slideshow {
namespace internal {
/** Base class for animation activities.
This whole class hierarchy is only for code sharing
between the various specializations (with or without
key times, fully discrete, etc.).
*/
class ActivityBase : public AnimationActivity
{
public:
ActivityBase( const ActivityParameters& rParms );
/// From Disposable interface
virtual void dispose();
protected:
/** From Activity interface
Derived classes should override, call this first
and then perform their work.
*/
virtual bool perform();
virtual double calcTimeLag() const;
virtual bool isActive() const;
private:
virtual void dequeued();
// From AnimationActivity interface
virtual void setTargets(
const AnimatableShapeSharedPtr& rShape,
const ShapeAttributeLayerSharedPtr& rAttrLayer );
private:
/** Hook for derived classes
This method will be called from the first
perform() invocation, to signal the start of the
activity.
*/
virtual void startAnimation() = 0;
/** Hook for derived classes
This method will be called after the last perform()
invocation, and after the potential changes of that
perform() call are committed to screen. That is, in
endAnimation(), the animation objects (sprites,
animation) can safely be destroyed, without causing
visible artifacts on screen.
*/
virtual void endAnimation() = 0;
protected:
/** End this activity, in a regular way.
This method is for derived classes needing to signal a
regular activity end (i.e. because the regular
duration is over)
*/
void endActivity();
/** Modify fractional time.
This method modifies the fractional time (total
duration mapped to the [0,1] range) to the
effective simple time, but only according to
acceleration/deceleration.
*/
double calcAcceleratedTime( double nT ) const;
bool isDisposed() const {
return (!mbIsActive && !mpEndEvent && !mpShape &&
!mpAttributeLayer);
}
EventQueue& getEventQueue() const { return mrEventQueue; }
AnimatableShapeSharedPtr getShape() const { return mpShape; }
ShapeAttributeLayerSharedPtr getShapeAttributeLayer() const
{ return mpAttributeLayer; }
bool isRepeatCountValid() const { return maRepeats; }
double getRepeatCount() const { return *maRepeats; }
bool isAutoReverse() const { return mbAutoReverse; }
private:
/// Activity:
virtual void end();
virtual void performEnd() = 0;
private:
EventSharedPtr mpEndEvent;
EventQueue& mrEventQueue;
AnimatableShapeSharedPtr mpShape; // only to pass on to animation
ShapeAttributeLayerSharedPtr mpAttributeLayer; // only to pass on to anim
::boost::optional<double> const maRepeats;
const double mnAccelerationFraction;
const double mnDecelerationFraction;
const bool mbAutoReverse;
// true, if perform() has not yet been called:
mutable bool mbFirstPerformCall;
bool mbIsActive;
};
} // namespace internal
} // namespace presentation
#endif /* INCLUDED_SLIDESHOW_ACTIVITYBASE_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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