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39
40#ifndef QQUICKTRANSITION_H
41#define QQUICKTRANSITION_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include "qquickstate_p.h"
55#include <private/qabstractanimationjob_p.h>
56#include <private/qqmlguard_p.h>
57#include <qqml.h>
58
59#include <QtCore/qobject.h>
60
61QT_BEGIN_NAMESPACE
62
63class QQuickAbstractAnimation;
64class QQuickTransitionPrivate;
65class QQuickTransitionManager;
66class QQuickTransition;
67
68class QQuickTransitionInstance : QAnimationJobChangeListener
69{
70public:
71 QQuickTransitionInstance(QQuickTransition *transition, QAbstractAnimationJob *anim);
72 ~QQuickTransitionInstance();
73
74 void start();
75 void stop();
76
77 bool isRunning() const;
78
79protected:
80 void animationStateChanged(QAbstractAnimationJob *, QAbstractAnimationJob::State, QAbstractAnimationJob::State) override;
81
82 void removeStateChangeListener()
83 {
84 m_anim->removeAnimationChangeListener(listener: this, QAbstractAnimationJob::StateChange);
85 }
86
87private:
88 QQmlGuard<QQuickTransition> m_transition;
89 QAbstractAnimationJob *m_anim;
90 friend class QQuickTransition;
91};
92
93class Q_QUICK_PRIVATE_EXPORT QQuickTransition : public QObject
94{
95 Q_OBJECT
96 Q_DECLARE_PRIVATE(QQuickTransition)
97
98 Q_PROPERTY(QString from READ fromState WRITE setFromState NOTIFY fromChanged)
99 Q_PROPERTY(QString to READ toState WRITE setToState NOTIFY toChanged)
100 Q_PROPERTY(bool reversible READ reversible WRITE setReversible NOTIFY reversibleChanged)
101 Q_PROPERTY(bool running READ running NOTIFY runningChanged)
102 Q_PROPERTY(QQmlListProperty<QQuickAbstractAnimation> animations READ animations)
103 Q_PROPERTY(bool enabled READ enabled WRITE setEnabled NOTIFY enabledChanged)
104 Q_CLASSINFO("DefaultProperty", "animations")
105 Q_CLASSINFO("DeferredPropertyNames", "animations")
106 QML_NAMED_ELEMENT(Transition)
107
108public:
109 QQuickTransition(QObject *parent=nullptr);
110 ~QQuickTransition();
111
112 QString fromState() const;
113 void setFromState(const QString &);
114
115 QString toState() const;
116 void setToState(const QString &);
117
118 bool reversible() const;
119 void setReversible(bool);
120
121 bool enabled() const;
122 void setEnabled(bool enabled);
123
124 bool running() const;
125
126 QQmlListProperty<QQuickAbstractAnimation> animations();
127
128 QQuickTransitionInstance *prepare(QQuickStateOperation::ActionList &actions,
129 QList<QQmlProperty> &after,
130 QQuickTransitionManager *end,
131 QObject *defaultTarget);
132
133 void setReversed(bool r);
134
135Q_SIGNALS:
136 void fromChanged();
137 void toChanged();
138 void reversibleChanged();
139 void enabledChanged();
140 void runningChanged();
141};
142
143QT_END_NAMESPACE
144
145QML_DECLARE_TYPE(QQuickTransition)
146
147#endif // QQUICKTRANSITION_H
148

source code of qtdeclarative/src/quick/util/qquicktransition_p.h