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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <private/piesliceanimation_p.h>
#include <private/piechartitem_p.h>
Q_DECLARE_METATYPE(QT_CHARTS_NAMESPACE::PieSliceData)
QT_CHARTS_BEGIN_NAMESPACE
qreal linearPos(qreal start, qreal end, qreal pos)
{
return start + ((end - start) * pos);
}
QPointF linearPos(QPointF start, QPointF end, qreal pos)
{
qreal x = linearPos(start.x(), end.x(), pos);
qreal y = linearPos(start.y(), end.y(), pos);
return QPointF(x, y);
}
QPen linearPos(QPen start, QPen end, qreal pos)
{
QColor c;
c.setRedF(linearPos(start.color().redF(), end.color().redF(), pos));
c.setGreenF(linearPos(start.color().greenF(), end.color().greenF(), pos));
c.setBlueF(linearPos(start.color().blueF(), end.color().blueF(), pos));
end.setColor(c);
return end;
}
QBrush linearPos(QBrush start, QBrush end, qreal pos)
{
QColor c;
c.setRedF(linearPos(start.color().redF(), end.color().redF(), pos));
c.setGreenF(linearPos(start.color().greenF(), end.color().greenF(), pos));
c.setBlueF(linearPos(start.color().blueF(), end.color().blueF(), pos));
end.setColor(c);
return end;
}
PieSliceAnimation::PieSliceAnimation(PieSliceItem *sliceItem)
: ChartAnimation(sliceItem),
m_sliceItem(sliceItem),
m_currentValue(m_sliceItem->m_data)
{
}
PieSliceAnimation::~PieSliceAnimation()
{
}
void PieSliceAnimation::setValue(const PieSliceData &startValue, const PieSliceData &endValue)
{
if (state() != QAbstractAnimation::Stopped)
stop();
m_currentValue = startValue;
setKeyValueAt(0.0, QVariant::fromValue(startValue));
setKeyValueAt(1.0, QVariant::fromValue(endValue));
}
void PieSliceAnimation::updateValue(const PieSliceData &endValue)
{
if (state() != QAbstractAnimation::Stopped)
stop();
setKeyValueAt(0.0, QVariant::fromValue(m_currentValue));
setKeyValueAt(1.0, QVariant::fromValue(endValue));
}
PieSliceData PieSliceAnimation::currentSliceValue()
{
// NOTE:
// We must use an internal current value because QVariantAnimation::currentValue() is updated
// before the animation is actually started. So if we get 2 updateValue() calls in a row the currentValue()
// will have the end value set from the first call and the second call will interpolate that instead of
// the original current value as it was before the first call.
return m_currentValue;
}
QVariant PieSliceAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress) const
{
PieSliceData startValue = qvariant_cast<PieSliceData>(start);
PieSliceData endValue = qvariant_cast<PieSliceData>(end);
PieSliceData result;
result = endValue;
result.m_center = linearPos(startValue.m_center, endValue.m_center, progress);
result.m_radius = linearPos(startValue.m_radius, endValue.m_radius, progress);
result.m_startAngle = linearPos(startValue.m_startAngle, endValue.m_startAngle, progress);
result.m_angleSpan = linearPos(startValue.m_angleSpan, endValue.m_angleSpan, progress);
result.m_slicePen = linearPos(startValue.m_slicePen, endValue.m_slicePen, progress);
result.m_sliceBrush = linearPos(startValue.m_sliceBrush, endValue.m_sliceBrush, progress);
result.m_holeRadius = linearPos(startValue.m_holeRadius, endValue.m_holeRadius, progress);
return QVariant::fromValue(result);
}
void PieSliceAnimation::updateCurrentValue(const QVariant &value)
{
if (state() != QAbstractAnimation::Stopped) { //workaround
m_currentValue = qvariant_cast<PieSliceData>(value);
m_sliceItem->setLayout(m_currentValue);
}
}
QT_CHARTS_END_NAMESPACE
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