1// Copyright (C) 2019 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
3
4#ifndef QQUICKKEYFRAME_P_H
5#define QQUICKKEYFRAME_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include "qtquicktimelineglobal_p.h"
19
20#include <QtCore/QObject>
21#include <QtCore/qeasingcurve.h>
22
23#include <QtQml/qqml.h>
24
25QT_BEGIN_NAMESPACE
26
27class QQuickKeyframeGroupPrivate;
28class QQuickKeyframePrivate;
29class QQuickNumberKeyframePrivate;
30
31class Q_QUICKTIMELINE_EXPORT QQuickKeyframe : public QObject
32{
33 Q_OBJECT
34 Q_DECLARE_PRIVATE(QQuickKeyframe)
35
36 Q_PROPERTY(qreal frame READ frame WRITE setFrame NOTIFY frameChanged)
37 Q_PROPERTY(QEasingCurve easing READ easing WRITE setEasing NOTIFY easingCurveChanged)
38 Q_PROPERTY(QVariant value READ value WRITE setValue NOTIFY valueChanged)
39
40 QML_NAMED_ELEMENT(Keyframe)
41 QML_ADDED_IN_VERSION(1, 0)
42
43public:
44 explicit QQuickKeyframe(QObject *parent = nullptr);
45
46 qreal frame() const;
47 void setFrame(qreal);
48 void reset();
49
50 QEasingCurve easing() const;
51 void setEasing(const QEasingCurve &);
52
53 QVariant value() const;
54 void setValue(const QVariant &v);
55
56 virtual QVariant evaluate(QQuickKeyframe *pre, qreal frame, int userType) const;
57
58protected:
59 QQuickKeyframe(QQuickKeyframePrivate &dd, QObject *parent);
60
61Q_SIGNALS:
62 void frameChanged();
63 void easingCurveChanged();
64 void valueChanged();
65};
66
67class Q_QUICKTIMELINE_EXPORT QQuickKeyframeGroup : public QObject, public QQmlParserStatus
68{
69 Q_OBJECT
70 Q_DECLARE_PRIVATE(QQuickKeyframeGroup)
71
72 Q_INTERFACES(QQmlParserStatus)
73
74 Q_PROPERTY(QObject *target READ target WRITE setTargetObject NOTIFY targetChanged)
75 Q_PROPERTY(QString property READ property WRITE setProperty NOTIFY propertyChanged)
76 Q_PROPERTY(QQmlListProperty<QQuickKeyframe> keyframes READ keyframes)
77 Q_PROPERTY(QUrl keyframeSource READ keyframeSource WRITE setKeyframeSource NOTIFY keyframeSourceChanged REVISION(1, 1))
78
79 QML_NAMED_ELEMENT(KeyframeGroup)
80 QML_ADDED_IN_VERSION(1, 0)
81
82 Q_CLASSINFO("DefaultProperty", "keyframes")
83
84public:
85 explicit QQuickKeyframeGroup(QObject *parent = nullptr);
86
87 QQmlListProperty<QQuickKeyframe> keyframes();
88
89 QObject *target() const;
90 void setTargetObject(QObject *);
91
92 QString property() const;
93 void setProperty(const QString &);
94
95 Q_REVISION(1, 1) QUrl keyframeSource() const;
96 Q_REVISION(1, 1) void setKeyframeSource(const QUrl &source);
97
98 const QByteArray keyframeData() const;
99 void setKeyframeData(const QByteArray &data);
100
101 QVariant evaluate(qreal frame) const;
102
103 void setProperty(qreal frame);
104
105 void init();
106
107 void resetDefaultValue();
108
109 void reset();
110
111protected:
112 void setupKeyframes();
113
114 void classBegin() override;
115 void componentComplete() override;
116
117Q_SIGNALS:
118 void targetChanged();
119 void propertyChanged();
120 Q_REVISION(1, 1) void keyframeSourceChanged();
121};
122
123QT_END_NAMESPACE
124
125#endif // QQUICKKEYFRAME_P_H
126

source code of qtquicktimeline/src/timeline/qquickkeyframe_p.h