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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "stackedbaranimation_p.h"
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#include "stackedbarchartitem_p.h"
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#include <QTimer>
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Q_DECLARE_METATYPE(QVector<QRectF>)
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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StackedBarAnimation::StackedBarAnimation(BarChartItem *item)
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:ChartAnimation(item),
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m_item(item)
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{
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setEasingCurve(QEasingCurve::OutQuart);
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}
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StackedBarAnimation::~StackedBarAnimation()
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{
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}
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QVariant StackedBarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
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{
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QVector<QRectF> startVector = qVariantValue<QVector<QRectF> >(from);
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QVector<QRectF> endVector = qVariantValue<QVector<QRectF> >(to);
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QVector<QRectF> result;
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Q_ASSERT(startVector.count() == endVector.count());
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qreal zeroPos = ((m_item->geometry().height() + m_item->geometry().y()) * (1 - progress));
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for(int i = 0; i < startVector.count(); i++) {
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qreal w = endVector[i].width();
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qreal h = startVector[i].height() + ((endVector[i].height() - startVector[i].height()) * progress);
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qreal x = endVector[i].topLeft().x();
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qreal y = startVector[i].topLeft().y() + ((endVector[i].topLeft().y() - startVector[i].topLeft().y()) * progress)
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+ zeroPos;
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QRectF value(x,y,w,h);
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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 StackedBarAnimation::updateCurrentValue(const QVariant &value)
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{
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QVector<QRectF> layout = qVariantValue<QVector<QRectF> >(value);
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m_item->setLayout(layout);
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}
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void StackedBarAnimation::updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
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{
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setDuration(ChartAnimationDuration);
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setKeyValueAt(0.0, qVariantFromValue(oldLayout));
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setKeyValueAt(1.0, qVariantFromValue(newLayout));
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QTimer::singleShot(0, this, SLOT(start()));
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}
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#include "moc_stackedbaranimation_p.cpp"
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QTCOMMERCIALCHART_END_NAMESPACE
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