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50
51#ifndef TRAFFICLIGHT_H
52#define TRAFFICLIGHT_H
53
54#include <QAbstractButton>
55#include <QScxmlStateMachine>
56#include <QWidget>
57
58class TrafficLight : public QWidget
59{
60 Q_OBJECT
61
62public:
63 TrafficLight(QScxmlStateMachine *machine, QWidget *parent = nullptr);
64
65private slots:
66 void toggleWorking(bool pause);
67
68private:
69 QScxmlStateMachine *m_machine;
70};
71
72class LightWidget: public QWidget
73{
74 Q_OBJECT
75 Q_PROPERTY(bool on READ isOn WRITE setOn)
76
77public:
78 LightWidget(const QString &image, QWidget *parent = nullptr);
79
80 bool isOn() const;
81 void setOn(bool on);
82
83public slots:
84 void switchLight(bool onoff);
85
86protected:
87 void paintEvent(QPaintEvent *) override;
88 QSize sizeHint() const override;
89
90private:
91 QImage m_image;
92 bool m_on = false;
93};
94
95class ButtonWidget : public QAbstractButton
96{
97 Q_OBJECT
98public:
99 ButtonWidget(QWidget *parent = nullptr);
100
101protected:
102 void paintEvent(QPaintEvent *) override;
103 QSize sizeHint() const override;
104
105private:
106 QImage m_playIcon;
107 QImage m_pauseIcon;
108};
109
110#endif // TRAFFICLIGHT_H
111

source code of qtscxml/examples/scxml/trafficlight-common/trafficlight.h