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39
40#ifndef QSEQUENTIALANIMATIONGROUP_P_H
41#define QSEQUENTIALANIMATIONGROUP_P_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 "qsequentialanimationgroup.h"
55#include "private/qanimationgroup_p.h"
56
57QT_REQUIRE_CONFIG(animation);
58
59QT_BEGIN_NAMESPACE
60
61class QSequentialAnimationGroupPrivate : public QAnimationGroupPrivate
62{
63 Q_DECLARE_PUBLIC(QSequentialAnimationGroup)
64public:
65 QSequentialAnimationGroupPrivate()
66 : currentAnimation(nullptr), currentAnimationIndex(-1), lastLoop(0)
67 { }
68
69
70 struct AnimationIndex
71 {
72 AnimationIndex() : index(0), timeOffset(0) {}
73 // index points to the animation at timeOffset, skipping 0 duration animations.
74 // Note that the index semantic is slightly different depending on the direction.
75 int index; // the index of the animation in timeOffset
76 int timeOffset; // time offset when the animation at index starts.
77 };
78
79 int animationActualTotalDuration(int index) const;
80 AnimationIndex indexForCurrentTime() const;
81
82 void setCurrentAnimation(int index, bool intermediate = false);
83 void activateCurrentAnimation(bool intermediate = false);
84
85 void animationInsertedAt(int index) override;
86 void animationRemoved(int index, QAbstractAnimation *anim) override;
87
88 bool atEnd() const;
89
90 QAbstractAnimation *currentAnimation;
91 int currentAnimationIndex;
92
93 // this is the actual duration of uncontrolled animations
94 // it helps seeking and even going forward
95 QVector<int> actualDuration;
96
97 void restart();
98 int lastLoop;
99
100 // handle time changes
101 void rewindForwards(const AnimationIndex &newAnimationIndex);
102 void advanceForwards(const AnimationIndex &newAnimationIndex);
103
104 // private slot
105 void _q_uncontrolledAnimationFinished();
106};
107
108QT_END_NAMESPACE
109
110#endif //QSEQUENTIALANIMATIONGROUP_P_H
111

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