| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | // W A R N I N G |
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| 5 | // ------------- |
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| 6 | // |
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| 7 | // This file is not part of the Qt Chart API. It exists purely as an |
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| 8 | // implementation detail. This header file may change from version to |
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| 9 | // version without notice, or even be removed. |
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| 10 | // |
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| 11 | // We mean it. |
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| 12 | |
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| 13 | #ifndef SPLINEANIMATION_P_H |
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| 14 | #define SPLINEANIMATION_P_H |
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| 15 | |
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| 16 | #include <private/xyanimation_p.h> |
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| 17 | #include <QtCharts/private/qchartglobal_p.h> |
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| 18 | #include <QtCore/QPointF> |
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| 19 | |
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| 20 | typedef QPair<QList<QPointF>, QList<QPointF>> SplineVector; |
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| 21 | |
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| 22 | QT_BEGIN_NAMESPACE |
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| 23 | |
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| 24 | class SplineChartItem; |
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| 25 | |
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| 26 | class Q_CHARTS_EXPORT SplineAnimation : public XYAnimation |
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| 27 | { |
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| 28 | public: |
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| 29 | SplineAnimation(SplineChartItem *item, int duration, QEasingCurve &curve); |
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| 30 | ~SplineAnimation(); |
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| 31 | void setup(const QList<QPointF> &oldPoints, const QList<QPointF> &newPoints, |
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| 32 | const QList<QPointF> &oldContorlPoints, const QList<QPointF> &newControlPoints, |
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| 33 | int index = -1); |
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| 34 | |
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| 35 | protected: |
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| 36 | QVariant interpolated(const QVariant &start, const QVariant &end, qreal progress) const override; |
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| 37 | void updateCurrentValue(const QVariant &value) override; |
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| 38 | void updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState) override; |
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| 39 | |
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| 40 | private: |
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| 41 | SplineVector m_oldSpline; |
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| 42 | SplineVector m_newSpline; |
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| 43 | SplineChartItem *m_item; |
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| 44 | bool m_valid; |
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| 45 | }; |
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| 46 | |
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| 47 | QT_END_NAMESPACE |
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| 48 | |
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| 49 | #endif |
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| 50 | |
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