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3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
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6** This file is part of the Qt Charts module of the Qt Toolkit.
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29
30// W A R N I N G
31// -------------
32//
33// This file is not part of the Qt Chart API. It exists purely as an
34// implementation detail. This header file may change from version to
35// version without notice, or even be removed.
36//
37// We mean it.
38
39#ifndef SPLINEANIMATION_P_H
40#define SPLINEANIMATION_P_H
41
42#include <private/xyanimation_p.h>
43#include <QtCharts/private/qchartglobal_p.h>
44#include <QtCore/QPointF>
45
46typedef QPair<QVector<QPointF >, QVector<QPointF > > SplineVector;
47
48QT_CHARTS_BEGIN_NAMESPACE
49
50class SplineChartItem;
51
52class Q_CHARTS_PRIVATE_EXPORT SplineAnimation : public XYAnimation
53{
54public:
55 SplineAnimation(SplineChartItem *item, int duration, QEasingCurve &curve);
56 ~SplineAnimation();
57 void setup(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, QVector<QPointF> &oldContorlPoints, QVector<QPointF> &newControlPoints, int index = -1);
58
59protected:
60 QVariant interpolated(const QVariant &start, const QVariant &end, qreal progress) const;
61 void updateCurrentValue(const QVariant &value);
62 void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState);
63
64private:
65 SplineVector m_oldSpline;
66 SplineVector m_newSpline;
67 SplineChartItem *m_item;
68 bool m_valid;
69};
70
71QT_CHARTS_END_NAMESPACE
72
73#endif
74

source code of qtcharts/src/charts/animations/splineanimation_p.h