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2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the Qt Charts module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL$
9** Commercial License Usage
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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 BARANIMATION_P_H
40#define BARANIMATION_P_H
41
42#include <private/chartanimation_p.h>
43#include <QtCharts/private/qchartglobal_p.h>
44
45QT_CHARTS_BEGIN_NAMESPACE
46
47class AbstractBarChartItem;
48
49class Q_CHARTS_PRIVATE_EXPORT BarAnimation : public ChartAnimation
50{
51 Q_OBJECT
52
53public:
54 BarAnimation(AbstractBarChartItem *item, int duration, QEasingCurve &curve);
55 ~BarAnimation();
56
57public: // from QVariantAnimation
58 virtual QVariant interpolated(const QVariant &from, const QVariant &to, qreal progress) const;
59 virtual void updateCurrentValue(const QVariant &value);
60
61 void setup(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
62
63protected:
64 AbstractBarChartItem *m_item;
65};
66
67QT_CHARTS_END_NAMESPACE
68
69#endif // BARANIMATION_P_H
70

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