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39
40#ifndef QTIMELINE_H
41#define QTIMELINE_H
42
43#include <QtCore/qglobal.h>
44
45QT_REQUIRE_CONFIG(easingcurve);
46
47#include <QtCore/qeasingcurve.h>
48#include <QtCore/qobject.h>
49
50QT_BEGIN_NAMESPACE
51
52
53class QTimeLinePrivate;
54class Q_CORE_EXPORT QTimeLine : public QObject
55{
56 Q_OBJECT
57 Q_PROPERTY(int duration READ duration WRITE setDuration)
58 Q_PROPERTY(int updateInterval READ updateInterval WRITE setUpdateInterval)
59 Q_PROPERTY(int currentTime READ currentTime WRITE setCurrentTime)
60 Q_PROPERTY(Direction direction READ direction WRITE setDirection)
61 Q_PROPERTY(int loopCount READ loopCount WRITE setLoopCount)
62#if QT_DEPRECATED_SINCE(5, 15)
63 Q_PROPERTY(CurveShape curveShape READ curveShape WRITE setCurveShape)
64#endif
65 Q_PROPERTY(QEasingCurve easingCurve READ easingCurve WRITE setEasingCurve)
66public:
67 enum State {
68 NotRunning,
69 Paused,
70 Running
71 };
72 enum Direction {
73 Forward,
74 Backward
75 };
76#if QT_DEPRECATED_SINCE(5, 15)
77 enum CurveShape {
78 EaseInCurve,
79 EaseOutCurve,
80 EaseInOutCurve,
81 LinearCurve,
82 SineCurve,
83 CosineCurve
84 };
85#endif
86
87 explicit QTimeLine(int duration = 1000, QObject *parent = nullptr);
88 virtual ~QTimeLine();
89
90 State state() const;
91
92 int loopCount() const;
93 void setLoopCount(int count);
94
95 Direction direction() const;
96 void setDirection(Direction direction);
97
98 int duration() const;
99 void setDuration(int duration);
100
101 int startFrame() const;
102 void setStartFrame(int frame);
103 int endFrame() const;
104 void setEndFrame(int frame);
105 void setFrameRange(int startFrame, int endFrame);
106
107 int updateInterval() const;
108 void setUpdateInterval(int interval);
109
110#if QT_DEPRECATED_SINCE(5, 15)
111 QT_DEPRECATED_X("Access easingCurve directly")
112 CurveShape curveShape() const;
113 QT_DEPRECATED_X("Access easingCurve directly")
114 void setCurveShape(CurveShape shape);
115#endif
116
117 QEasingCurve easingCurve() const;
118 void setEasingCurve(const QEasingCurve &curve);
119
120 int currentTime() const;
121 int currentFrame() const;
122 qreal currentValue() const;
123
124 int frameForTime(int msec) const;
125 virtual qreal valueForTime(int msec) const;
126
127public Q_SLOTS:
128 void start();
129 void resume();
130 void stop();
131 void setPaused(bool paused);
132 void setCurrentTime(int msec);
133 void toggleDirection();
134
135Q_SIGNALS:
136 void valueChanged(qreal x, QPrivateSignal);
137 void frameChanged(int, QPrivateSignal);
138 void stateChanged(QTimeLine::State newState, QPrivateSignal);
139 void finished(QPrivateSignal);
140
141protected:
142 void timerEvent(QTimerEvent *event) override;
143
144private:
145 Q_DISABLE_COPY(QTimeLine)
146 Q_DECLARE_PRIVATE(QTimeLine)
147};
148
149QT_END_NAMESPACE
150
151#endif
152
153

source code of qtbase/src/corelib/tools/qtimeline.h