1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QSEQUENTIALANIMATIONGROUP_P_H
5#define QSEQUENTIALANIMATIONGROUP_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 "qsequentialanimationgroup.h"
19#include "private/qanimationgroup_p.h"
20#include "private/qproperty_p.h"
21
22QT_REQUIRE_CONFIG(animation);
23
24QT_BEGIN_NAMESPACE
25
26class QSequentialAnimationGroupPrivate : public QAnimationGroupPrivate
27{
28 Q_DECLARE_PUBLIC(QSequentialAnimationGroup)
29public:
30 QSequentialAnimationGroupPrivate() : currentAnimationIndex(-1), lastLoop(0) { }
31
32 struct AnimationIndex
33 {
34 AnimationIndex() : index(0), timeOffset(0) {}
35 // index points to the animation at timeOffset, skipping 0 duration animations.
36 // Note that the index semantic is slightly different depending on the direction.
37 int index; // the index of the animation in timeOffset
38 int timeOffset; // time offset when the animation at index starts.
39 };
40
41 int animationActualTotalDuration(int index) const;
42 AnimationIndex indexForCurrentTime() const;
43
44 void setCurrentAnimation(int index, bool intermediate = false);
45 void activateCurrentAnimation(bool intermediate = false);
46
47 void animationInsertedAt(qsizetype index) override;
48 void animationRemoved(qsizetype index, QAbstractAnimation *anim) override;
49
50 bool atEnd() const;
51
52 Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS(QSequentialAnimationGroupPrivate, QAbstractAnimation *,
53 currentAnimation,
54 nullptr // initial value
55 )
56 int currentAnimationIndex;
57
58 // this is the actual duration of uncontrolled animations
59 // it helps seeking and even going forward
60 QList<int> actualDuration;
61
62 void restart();
63 int lastLoop;
64
65 // handle time changes
66 void rewindForwards(const AnimationIndex &newAnimationIndex);
67 void advanceForwards(const AnimationIndex &newAnimationIndex);
68
69 // private slot
70 void _q_uncontrolledAnimationFinished();
71};
72
73QT_END_NAMESPACE
74
75#endif //QSEQUENTIALANIMATIONGROUP_P_H
76

source code of qtbase/src/corelib/animation/qsequentialanimationgroup_p.h