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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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28****************************************************************************/
29
30#ifndef MAINWIDGET_H
31#define MAINWIDGET_H
32
33#include <QtCharts/QChartGlobal>
34#include <QtCharts/QChart>
35#include <QtCharts/QChartView>
36#include <QtWidgets/QWidget>
37#include <QtWidgets/QGraphicsWidget>
38#include <QtWidgets/QGridLayout>
39#include <QtWidgets/QGraphicsGridLayout>
40#include <QtWidgets/QDoubleSpinBox>
41#include <QtWidgets/QGroupBox>
42#include <QtCharts/QBarSeries>
43
44QT_CHARTS_USE_NAMESPACE
45
46class MainWidget : public QWidget
47{
48 Q_OBJECT
49public:
50 explicit MainWidget(QWidget *parent = 0);
51 void createSeries();
52 void showLegendSpinbox();
53 void hideLegendSpinbox();
54
55public Q_SLOTS:
56 void toggleAttached();
57 void addBarset();
58 void removeBarset();
59
60 void setLegendAlignment();
61
62 void toggleBold();
63 void toggleItalic();
64 void fontSizeChanged();
65
66 void updateLegendLayout();
67
68private:
69 QChart *m_chart;
70 QBarSeries *m_series;
71
72 QChartView *m_chartView;
73 QGridLayout *m_mainLayout;
74 QGridLayout *m_buttonLayout;
75 QGridLayout *m_fontLayout;
76
77 QDoubleSpinBox *m_fontSize;
78
79 // For detached layout
80 QGroupBox *m_legendSettings;
81 QDoubleSpinBox *m_legendPosX;
82 QDoubleSpinBox *m_legendPosY;
83 QDoubleSpinBox *m_legendWidth;
84 QDoubleSpinBox *m_legendHeight;
85};
86
87#endif // MAINWIDGET_H
88

source code of qtcharts/examples/charts/legend/mainwidget.h