82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
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/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#include "QskVariantAnimator.h"
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#include "QskColorFilter.h"
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// Even if we don't use the standard Qt animation system we
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// use its registry of interpolators: why adding our own ...
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#include <QVariantAnimation>
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#include <private/qvariantanimation_p.h>
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#if 1
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static void qskRegisterInterpolator()
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{
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qRegisterAnimationInterpolator<QskColorFilter>( QskColorFilter::interpolate );
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}
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Q_CONSTRUCTOR_FUNCTION( qskRegisterInterpolator )
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#endif
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static inline QVariant qskInterpolate( void( *interpolator )(),
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const QVariant& from, const QVariant& to, qreal progress )
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{
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auto f = reinterpret_cast< QVariantAnimation::Interpolator >( interpolator );
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return f( from.constData(), to.constData(), progress );
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}
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QskVariantAnimator::QskVariantAnimator():
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m_interpolator( nullptr )
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{
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}
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QskVariantAnimator::~QskVariantAnimator()
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{
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}
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void QskVariantAnimator::setStartValue( const QVariant& value )
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{
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m_startValue = value;
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}
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void QskVariantAnimator::setEndValue( const QVariant& value )
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{
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m_endValue = value;
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}
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void QskVariantAnimator::setCurrentValue( const QVariant& value )
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{
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m_currentValue = value;
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}
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void QskVariantAnimator::setup()
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{
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m_interpolator = nullptr;
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const auto type = m_startValue.userType();
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if ( type == m_endValue.userType() )
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{
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// all what has been registered by qRegisterAnimationInterpolator
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m_interpolator = reinterpret_cast< void (*)() >( QVariantAnimationPrivate::getInterpolator( type ) );
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}
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m_currentValue = m_interpolator ? m_startValue : m_endValue;
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}
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void QskVariantAnimator::advance( qreal progress )
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{
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if ( m_interpolator )
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{
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m_currentValue = qskInterpolate( m_interpolator,
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m_startValue, m_endValue, progress );
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}
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}
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void QskVariantAnimator::done()
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{
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m_interpolator = nullptr;
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}
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