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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 "splineanimation_p.h"
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#include "splinechartitem_p.h"
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Q_DECLARE_METATYPE(QVector<QPointF>)
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Q_DECLARE_METATYPE(SplineVector)
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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SplineAnimation::SplineAnimation(SplineChartItem* item):ChartAnimation(item),
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m_item(item),
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m_dirty(true)
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{
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}
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SplineAnimation::~SplineAnimation()
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{
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}
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void SplineAnimation::setValues(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, QVector<QPointF> &oldControlPoints, QVector<QPointF> &newControlPoints, int index)
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{
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int x = oldPoints.count();
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int y = newPoints.count();
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Q_ASSERT(newPoints.count() * 2 - 2 == newControlPoints.count());
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if (x != y && abs(x - y) != 1) {
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m_oldSpline.first = newPoints;
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m_oldSpline.second = newControlPoints;
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oldPoints.resize(newPoints.size());
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oldControlPoints.resize(newControlPoints.size());
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SplineVector oldPair;
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oldPair.first = oldPoints;
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oldPair.second = oldControlPoints;
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SplineVector newPair;
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newPair.first = newPoints;
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newPair.second = newControlPoints;
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setKeyValueAt(0.0, qVariantFromValue(oldPair));
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setKeyValueAt(1.0, qVariantFromValue(newPair));
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m_dirty = false;
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}
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else {
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if(m_dirty) {
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m_oldSpline.first = oldPoints;
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m_oldSpline.second = oldControlPoints;
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m_dirty = false;
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}
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oldPoints = newPoints;
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oldControlPoints = newControlPoints;
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if (y < x) {
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m_oldSpline.first.remove(index); //remove
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m_oldSpline.second.remove(index * 2);
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m_oldSpline.second.remove(index * 2);
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}
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if (y > x) {
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m_oldSpline.first.insert(index, x > 0 ? m_oldSpline.first[index-1] : newPoints[index]); //add
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m_oldSpline.second.insert((index - 1) * 2, x > 1 ? m_oldSpline.second[(index-2)*2] : newControlPoints[(index - 1) * 2]); //add
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m_oldSpline.second.insert((index - 1) * 2 + 1, x > 1 ? m_oldSpline.second[(index - 2) * 2 + 1] : newControlPoints[(index - 1) * 2 + 1]); //add
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}
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SplineVector newPair;
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newPair.first=newPoints;
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newPair.second=newControlPoints;
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setKeyValueAt(0.0, qVariantFromValue(m_oldSpline));
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setKeyValueAt(1.0, qVariantFromValue(newPair));
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}
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}
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QVariant SplineAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress ) const
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{
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SplineVector startPair = qVariantValue< SplineVector >(start);
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SplineVector endPair = qVariantValue< SplineVector >(end);
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SplineVector result;
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switch (m_type) {
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case MoveDownAnimation: {
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if (startPair.first.count() != endPair.first.count())
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break;
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Q_ASSERT(startPair.first.count() * 2 - 2 == startPair.second.count());
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Q_ASSERT(endPair.first.count() * 2 - 2 == endPair.second.count());
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for(int i = 0; i < endPair.first.count(); i++) {
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qreal x = startPair.first[i].x() + ((endPair.first[i].x() - startPair.first[i].x()) * progress);
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qreal y = startPair.first[i].y() + ((endPair.first[i].y() - startPair.first[i].y()) * progress);
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result.first << QPointF(x,y);
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if (i + 1 >= endPair.first.count())
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continue;
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x = startPair.second[i * 2].x() + ((endPair.second[i * 2].x() - startPair.second[i * 2].x()) * progress);
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y = startPair.second[i * 2].y() + ((endPair.second[i * 2].y() - startPair.second[i * 2].y()) * progress);
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result.second << QPoint(x,y);
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x = startPair.second[i * 2 + 1].x() + ((endPair.second[i * 2 + 1].x() - startPair.second[i * 2 + 1].x()) * progress);
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y = startPair.second[i * 2 + 1].y() + ((endPair.second[i * 2 + 1].y() - startPair.second[i * 2 + 1].y()) * progress);
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result.second << QPoint(x,y);
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}
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}
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break;
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case LineDrawAnimation:{
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Q_ASSERT(endPair.first.count() * 2 - 2 == endPair.second.count());
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int count = endPair.first.count()* qBound(qreal(0), progress, qreal(1));
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for(int i = 0; i < count; i++) {
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result.first << endPair.first[i];
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if(i + 1 == count)
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break;
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result.second << endPair.second[2 * i];
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result.second << endPair.second[2 * i + 1];
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}
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}
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break;
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default:
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qWarning() << "Unknow type of animation";
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break;
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}
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return qVariantFromValue(result);
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}
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void SplineAnimation::updateCurrentValue (const QVariant &value )
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{
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if (state() != QAbstractAnimation::Stopped) { //workaround
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m_dirty = true;
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QPair<QVector<QPointF >, QVector<QPointF > > pair = qVariantValue< QPair< QVector<QPointF>, QVector<QPointF> > >(value);
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m_item->setLayout(pair.first, pair.second);
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}
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}
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QTCOMMERCIALCHART_END_NAMESPACE
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