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Some docs to QValuesAxis
Some docs to QValuesAxis
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stackedbaranimation.cpp
78 lines | 2.5 KiB | text/x-c | CppLexer
/ src / animations / stackedbaranimation.cpp
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sauimone
animations for stacked and percentbarchart
 r1426 /****************************************************************************
**
** Copyright (C) 2012 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the Qt Commercial Charts Add-on.
**
** $QT_BEGIN_LICENSE$
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
** $QT_END_LICENSE$
**
****************************************************************************/
#include "stackedbaranimation_p.h"
#include "stackedbarchartitem_p.h"
#include <QTimer>
Q_DECLARE_METATYPE(QVector<QRectF>)
QTCOMMERCIALCHART_BEGIN_NAMESPACE
StackedBarAnimation::StackedBarAnimation(BarChartItem *item)
:ChartAnimation(item),
m_item(item)
{
setEasingCurve(QEasingCurve::OutQuart);
}
StackedBarAnimation::~StackedBarAnimation()
{
}
QVariant StackedBarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
{
QVector<QRectF> startVector = qVariantValue<QVector<QRectF> >(from);
QVector<QRectF> endVector = qVariantValue<QVector<QRectF> >(to);
QVector<QRectF> result;
Q_ASSERT(startVector.count() == endVector.count());
sauimone
optimized calculations for stacked bar animation
 r1430 qreal yAxis = m_item->geometry().height() + m_item->geometry().y();
sauimone
animations for stacked and percentbarchart
 r1426
for(int i = 0; i < startVector.count(); i++) {
qreal w = endVector[i].width();
qreal h = startVector[i].height() + ((endVector[i].height() - startVector[i].height()) * progress);
qreal x = endVector[i].topLeft().x();
sauimone
optimized calculations for stacked bar animation
 r1430 qreal y = yAxis + ((endVector[i].topLeft().y() - yAxis) * progress);
sauimone
animations for stacked and percentbarchart
 r1426
QRectF value(x,y,w,h);
result << value;
}
return qVariantFromValue(result);
}
void StackedBarAnimation::updateCurrentValue(const QVariant &value)
{
QVector<QRectF> layout = qVariantValue<QVector<QRectF> >(value);
m_item->setLayout(layout);
}
void StackedBarAnimation::updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
{
setDuration(ChartAnimationDuration);
setKeyValueAt(0.0, qVariantFromValue(oldLayout));
setKeyValueAt(1.0, qVariantFromValue(newLayout));
QTimer::singleShot(0, this, SLOT(start()));
}
#include "moc_stackedbaranimation_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE