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axisanimationitem.cpp
71 lines | 1.9 KiB | text/x-c | CppLexer
/ src / axisanimationitem.cpp
#include "axisanimationitem_p.h"
#include <QPropertyAnimation>
Q_DECLARE_METATYPE(QVector<qreal>)
QTCOMMERCIALCHART_BEGIN_NAMESPACE
const static int duration = 500;
AxisAnimationItem::AxisAnimationItem(AxisType type,QGraphicsItem* parent) :
AxisItem(type,parent)
{
}
AxisAnimationItem::~AxisAnimationItem()
{
}
void AxisAnimationItem::updateItems(QVector<qreal>& vector1)
{
QVector<qreal> vector0 = vector1;
calculateLayout(vector1);
if(vector1.count()==0) return;
vector0.resize(vector1.size());
AxisAnimator *animation = new AxisAnimator(this,this);
animation->setDuration(duration);
animation->setEasingCurve(QEasingCurve::InOutBack);
animation->setKeyValueAt(0.0, qVariantFromValue(vector0));
animation->setKeyValueAt(1.0, qVariantFromValue(vector1));
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
void AxisAnimationItem::setLabelsAngle(int angle)
{
AxisItem::setLabelsAngle(angle);
}
AxisAnimator::AxisAnimator(AxisItem *axis,QObject *parent): QVariantAnimation(parent),
m_axis(axis)
{
}
AxisAnimator::~AxisAnimator()
{
}
QVariant AxisAnimator::interpolated(const QVariant &start, const QVariant & end, qreal progress ) const
{
QVector<qreal> startVector = qVariantValue<QVector<qreal> >(start);
QVector<qreal> endVecotr = qVariantValue<QVector<qreal> >(end);
QVector<qreal> result;
Q_ASSERT(startVector.count() == endVecotr.count());
for(int i =0 ;i< startVector.count();i++){
qreal value = startVector[i] + ((endVecotr[i]- startVector[i]) * progress);//qBound(0.0, progress, 1.0));
result << value;
}
return qVariantFromValue(result);
}
void AxisAnimator::updateCurrentValue (const QVariant & value )
{
QVector<qreal> vector = qVariantValue<QVector<qreal> >(value);
m_axis->applyLayout(vector);
}
#include "moc_axisanimationitem_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE