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#ifndef XYCHARTANIMATOR_P_H_
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#define XYCHARTANIMATOR_P_H_
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#include "qchartglobal.h"
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#include <QVariantAnimation>
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#include <QPointF>
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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template <class T, class U>
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class XYChartAnimationItem;
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template <class T, class U>
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class XYChartAnimator : public QVariantAnimation
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{
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public:
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enum Animation { LineDrawAnimation, MoveDownAnimation, MoveUpAnimation };
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XYChartAnimator(XYChartAnimationItem<T,U> *item, QObject *parent = 0 );
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~XYChartAnimator();
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void setAnimationType(Animation type);
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protected:
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QVariant interpolated(const QVariant &start, const QVariant & end, qreal progress ) const;
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void updateCurrentValue (const QVariant & value );
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void updateState ( QAbstractAnimation::State newState, QAbstractAnimation::State oldState);
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private:
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XYChartAnimationItem<T,U> *m_item;
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Animation m_type;
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};
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template <class T, class U>
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XYChartAnimator<T,U>::XYChartAnimator(XYChartAnimationItem<T,U> *item , QObject *parent):QVariantAnimation(parent),
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m_item(item),
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m_type(MoveDownAnimation)
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{
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}
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template <class T,class U>
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XYChartAnimator<T,U>::~XYChartAnimator()
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{
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}
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template <class T,class U>
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void XYChartAnimator<T,U>::setAnimationType(Animation type)
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{
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m_type=type;
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}
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template <class T, class U>
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QVariant XYChartAnimator<T,U>::interpolated(const QVariant &start, const QVariant & end, qreal progress ) const
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{
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QVector<QPointF> startVector = qVariantValue<QVector<QPointF> >(start);
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QVector<QPointF> endVector = qVariantValue<QVector<QPointF> >(end);
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QVector<QPointF> result;
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switch(m_type) {
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case MoveDownAnimation: {
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Q_ASSERT(startVector.count() == endVector.count());
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for(int i =0;i< startVector.count();i++) {
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qreal x = startVector[i].x() + ((endVector[i].x()- startVector[i].x()) * progress);
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qreal y = startVector[i].y() + ((endVector[i].y()- startVector[i].y()) * progress);
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result << QPointF(x,y);
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}
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}
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break;
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case LineDrawAnimation:{
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for(int i =0;i< endVector.count()* qBound(0.0, progress, 1.0);i++) {
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result << endVector[i];
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}
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}
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break;
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default:
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qWarning()<<"Unknow type of animation";
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break;
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}
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return qVariantFromValue(result);
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}
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template <class T, class U>
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void XYChartAnimator<T,U>::updateCurrentValue (const QVariant & value )
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{
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if(state()!=QAbstractAnimation::Stopped){ //workaround
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QVector<QPointF> vector = qVariantValue<QVector<QPointF> >(value);
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m_item->setGeometry(vector);
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}
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}
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template <class T, class U>
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void XYChartAnimator<T,U>::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState)
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{
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Q_UNUSED(oldState)
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if (newState==QAbstractAnimation::Running) m_item->animationStarted();
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QVariantAnimation::updateState(newState,oldState);
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif /* XYCHARTANIMATOR_P_H_ */
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