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39
40#ifndef QSEQUENTIALANIMATIONGROUPJOB_P_H
41#define QSEQUENTIALANIMATIONGROUPJOB_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 <private/qanimationgroupjob_p.h>
55
56QT_REQUIRE_CONFIG(qml_animation);
57
58QT_BEGIN_NAMESPACE
59
60class QPauseAnimationJob;
61class Q_QML_PRIVATE_EXPORT QSequentialAnimationGroupJob : public QAnimationGroupJob
62{
63 Q_DISABLE_COPY(QSequentialAnimationGroupJob)
64public:
65 QSequentialAnimationGroupJob();
66 ~QSequentialAnimationGroupJob();
67
68 int duration() const override;
69
70 QAbstractAnimationJob *currentAnimation() const { return m_currentAnimation; }
71 void clear() override;
72
73protected:
74 void updateCurrentTime(int) override;
75 void updateState(QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState) override;
76 void updateDirection(QAbstractAnimationJob::Direction direction) override;
77 void uncontrolledAnimationFinished(QAbstractAnimationJob *animation) override;
78 void debugAnimation(QDebug d) const override;
79
80private:
81 struct AnimationIndex
82 {
83 AnimationIndex() {}
84 // AnimationIndex points to the animation at timeOffset, skipping 0 duration animations.
85 // Note that the index semantic is slightly different depending on the direction.
86 bool afterCurrent = false; //whether animation is before or after m_currentAnimation //TODO: make enum Before/After/Same
87 int timeOffset = 0; // time offset when the animation at index starts.
88 QAbstractAnimationJob *animation = nullptr; //points to the animation at timeOffset
89 };
90
91 int animationActualTotalDuration(QAbstractAnimationJob *anim) const;
92 AnimationIndex indexForCurrentTime() const;
93
94 void setCurrentAnimation(QAbstractAnimationJob *anim, bool intermediate = false);
95 void activateCurrentAnimation(bool intermediate = false);
96
97 void animationInserted(QAbstractAnimationJob *anim) override;
98 void animationRemoved(QAbstractAnimationJob *anim, QAbstractAnimationJob *, QAbstractAnimationJob *) override;
99
100 bool atEnd() const;
101
102 void restart();
103
104 // handle time changes
105 void rewindForwards(const AnimationIndex &newAnimationIndex);
106 void advanceForwards(const AnimationIndex &newAnimationIndex);
107
108 //state
109 QAbstractAnimationJob *m_currentAnimation = nullptr;
110 int m_previousLoop = 0;
111};
112
113QT_END_NAMESPACE
114
115#endif //QSEQUENTIALANIMATIONGROUPJOB_P_H
116

source code of qtdeclarative/src/qml/animations/qsequentialanimationgroupjob_p.h