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Better support for negative values in stacked barcharts. Negative values are stacked from zero to negative direction. Positive values are stacked from zero to positive direction.
Better support for negative values in stacked barcharts. Negative values are stacked from zero to negative direction. Positive values are stacked from zero to positive direction.

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r1824:4fa1dedc5aa7
r1897:c0fc53c8ab57
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horizontalpercentbaranimation.cpp
64 lines | 1.9 KiB | text/x-c | CppLexer
/ src / animations / horizontalpercentbaranimation.cpp
/****************************************************************************
**
** 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 "horizontalpercentbaranimation_p.h"
#include "abstractbarchartitem_p.h"
#include <QTimer>
Q_DECLARE_METATYPE(QVector<QRectF>)
QTCOMMERCIALCHART_BEGIN_NAMESPACE
HorizontalPercentBarAnimation::HorizontalPercentBarAnimation(AbstractBarChartItem *item) :
AbstractBarAnimation(item)
{
}
HorizontalPercentBarAnimation::~HorizontalPercentBarAnimation()
{
}
QVariant HorizontalPercentBarAnimation::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());
qreal xAxis = m_item->geometry().x();
for(int i = 0; i < startVector.count(); i++) {
qreal h = endVector[i].height();
qreal w = endVector[i].width() * progress;
qreal x = xAxis + ((endVector[i].left() - xAxis) * progress);
qreal y = endVector[i].top();
QRectF value(x,y,w,h);
result << value.normalized();
}
return qVariantFromValue(result);
}
#include "moc_horizontalpercentbaranimation_p.cpp"
QTCOMMERCIALCHART_END_NAMESPACE