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/****************************************************************************
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**
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** Copyright (C) 2014 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.io
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**
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** This file is part of the Qt Charts module.
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**
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** Licensees holding valid commercial license for Qt may use this file in
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** accordance with the Qt License Agreement provided with the Software
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** or, alternatively, in accordance with the terms contained in a written
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** 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.io
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**
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****************************************************************************/
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#include <private/baranimation_p.h>
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#include <private/abstractbarchartitem_p.h>
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Q_DECLARE_METATYPE(QVector<QRectF>)
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QT_CHARTS_BEGIN_NAMESPACE
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BarAnimation::BarAnimation(AbstractBarChartItem *item)
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: ChartAnimation(item),
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m_item(item)
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{
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setDuration(ChartAnimationDuration);
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setEasingCurve(QEasingCurve::OutQuart);
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}
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BarAnimation::~BarAnimation()
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{
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}
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QVariant BarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
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{
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QVector<QRectF> startVector = qvariant_cast<QVector<QRectF> >(from);
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QVector<QRectF> endVector = qvariant_cast<QVector<QRectF> >(to);
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QVector<QRectF> result;
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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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QRectF start = startVector[i].normalized();
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QRectF end = endVector[i].normalized();
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qreal x1 = start.left() + progress * (end.left() - start.left());
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qreal x2 = start.right() + progress * (end.right() - start.right());
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qreal y1 = start.top() + progress * (end.top() - start.top());
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qreal y2 = start.bottom() + progress * (end.bottom() - start.bottom());
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QRectF value(QPointF(x1, y1), QPointF(x2, y2));
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result << value.normalized();
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}
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return qVariantFromValue(result);
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}
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void BarAnimation::updateCurrentValue(const QVariant &value)
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{
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if (state() != QAbstractAnimation::Stopped) { //workaround
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QVector<QRectF> layout = qvariant_cast<QVector<QRectF> >(value);
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m_item->setLayout(layout);
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}
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}
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void BarAnimation::setup(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
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{
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QVariantAnimation::KeyValues value;
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setKeyValues(value); //workaround for wrong interpolation call
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setKeyValueAt(0.0, qVariantFromValue(oldLayout));
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setKeyValueAt(1.0, qVariantFromValue(newLayout));
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}
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#include "moc_baranimation_p.cpp"
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QT_CHARTS_END_NAMESPACE
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