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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 
57 QT_REQUIRE_CONFIG(animation);
58 
59 QT_BEGIN_NAMESPACE
60 
61 class QSequentialAnimationGroupPrivate : public QAnimationGroupPrivate
62 {
Q_DECLARE_PUBLIC(QSequentialAnimationGroup)63     Q_DECLARE_PUBLIC(QSequentialAnimationGroup)
64 public:
65     QSequentialAnimationGroupPrivate()
66         : currentAnimation(nullptr), currentAnimationIndex(-1), lastLoop(0)
67     { }
68 
69 
70     struct AnimationIndex
71     {
AnimationIndexAnimationIndex72         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 
108 QT_END_NAMESPACE
109 
110 #endif //QSEQUENTIALANIMATIONGROUP_P_H
111