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#include "axisanimationitem_p.h"
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#include <QTimer>
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Q_DECLARE_METATYPE(QVector<qreal>)
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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const static int duration = 500;
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AxisAnimationItem::AxisAnimationItem(QChartAxis* axis,AxisType type,QGraphicsItem* parent) :
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AxisItem(axis,type,parent),
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m_animation(new AxisAnimator(this,this))
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{
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}
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AxisAnimationItem::~AxisAnimationItem()
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{
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}
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void AxisAnimationItem::updateLayout(QVector<qreal>& newLayout)
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{
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QVector<qreal> oldLayout = layout();
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if(newLayout.count()==0) return;
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if(zoomFactor()<0) {
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QRectF rect = geometry();
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oldLayout.resize(newLayout.count());
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for(int i=0,j=oldLayout.count()-1;i<(oldLayout.count()+1)/2;i++,j--)
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{
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oldLayout[i]= axisType()==X_AXIS?rect.left():rect.bottom();
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oldLayout[j]= axisType()==X_AXIS?rect.right():rect.top();
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}
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}
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else {
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int index = qMin(oldLayout.count()*zoomFactor(),newLayout.count()-1.0);
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oldLayout.resize(newLayout.count());
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for(int i=0;i<oldLayout.count();i++)
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{
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oldLayout[i]= oldLayout[index]; //axisType()==X_AXIS?rect.center.x():rect.center().y();
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}
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}
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if(m_animation->state()!=QAbstractAnimation::Stopped) {
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m_animation->stop();
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}
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m_animation->setDuration(duration);
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m_animation->setEasingCurve(QEasingCurve::OutQuart);
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QVariantAnimation::KeyValues value;
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m_animation->setKeyValues(value); //workaround for wrong interpolation call
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m_animation->setKeyValueAt(0.0, qVariantFromValue(oldLayout));
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m_animation->setKeyValueAt(1.0, qVariantFromValue(newLayout));
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QTimer::singleShot(0,m_animation,SLOT(start()));
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}
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void AxisAnimationItem::setLabelsAngle(int angle)
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{
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AxisItem::setLabelsAngle(angle);
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}
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AxisAnimator::AxisAnimator(AxisItem *axis,QObject *parent): QVariantAnimation(parent),
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m_axis(axis)
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{
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}
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AxisAnimator::~AxisAnimator()
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{
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}
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QVariant AxisAnimator::interpolated(const QVariant &start, const QVariant & end, qreal progress ) const
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{
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QVector<qreal> startVector = qVariantValue<QVector<qreal> >(start);
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QVector<qreal> endVecotr = qVariantValue<QVector<qreal> >(end);
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QVector<qreal> result;
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Q_ASSERT(startVector.count() == endVecotr.count());
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for(int i =0 ;i< startVector.count();i++){
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qreal value = startVector[i] + ((endVecotr[i]- startVector[i]) * progress);//qBound(0.0, progress, 1.0));
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result << value;
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}
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return qVariantFromValue(result);
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}
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void AxisAnimator::updateCurrentValue (const QVariant & value )
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{
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//Q_ASSERT(state()!=QAbstractAnimation::Stopped);
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if(state()!=QAbstractAnimation::Stopped)//workaround
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{
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QVector<qreal> vector = qVariantValue<QVector<qreal> >(value);
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m_axis->setLayout(vector);
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}
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}
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#include "moc_axisanimationitem_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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