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2**
3** Copyright (C) 2018 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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21** the Free Software Foundation and appearing in the file LICENSE.GPL3
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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 VALUEAXISLABEL_H
40#define VALUEAXISLABEL_H
41
42#include <private/editableaxislabel_p.h>
43
44QT_CHARTS_BEGIN_NAMESPACE
45
46class Q_CHARTS_PRIVATE_EXPORT ValueAxisLabel : public EditableAxisLabel
47{
48 Q_OBJECT
49public:
50 ValueAxisLabel(QGraphicsItem *parent = nullptr);
51
52 void keyPressEvent(QKeyEvent *event) override;
53
54 qreal value() const;
55 void setValue(const qreal &value);
56
57private:
58 qreal m_value = 0.0;
59 qreal m_valueBeforeEdit = 0.0;
60
61 void setInitialEditValue() override;
62 void finishEditing() override;
63 void resetBeforeEditValue() override;
64
65Q_SIGNALS:
66 void valueChanged(qreal oldValue, qreal newValue);
67};
68
69QT_CHARTS_END_NAMESPACE
70
71#endif // VALUEAXISLABEL_H
72

source code of qtcharts/src/charts/axis/valueaxis/valueaxislabel_p.h