内容

• 特性
• 公共函数
• 重实现公共函数
• 信号
• 重实现保护函数
• 详细描述

QSequentialAnimationGroup 类

QSequentialAnimationGroup 类提供一组连续动画。 更多...

头：	#include <QSequentialAnimationGroup>
qmake:	QT += core
Since:	Qt 4.6
继承：	QAnimationGroup

该类在 Qt 4.6 引入。

• 所有成员列表，包括继承成员

特性

• currentAnimation : QAbstractAnimation* const

公共函数

	QSequentialAnimationGroup (QObject * parent = nullptr)
virtual	~QSequentialAnimationGroup ()
QPauseAnimation *	addPause (int msecs )
QAbstractAnimation *	currentAnimation () const
QPauseAnimation *	insertPause (int index , int msecs )

重实现公共函数

virtual int

duration () const override

信号

void	currentAnimationChanged (QAbstractAnimation * current )

重实现保护函数

virtual bool	event (QEvent * event ) override
virtual void	updateCurrentTime (int currentTime ) override
virtual void	updateDirection (QAbstractAnimation::Direction direction ) override
virtual void	updateState (QAbstractAnimation::State newState , QAbstractAnimation::State oldState ) override

详细描述

QSequentialAnimationGroup is a QAnimationGroup that runs its animations in sequence, i.e., it starts one animation after another has finished playing. The animations are played in the order they are added to the group (using addAnimation() or insertAnimation() ). The animation group finishes when its last animation has finished.

At each moment there is at most one animation that is active in the group; it is returned by currentAnimation (). An empty group has no current animation.

A sequential animation group can be treated as any other animation, i.e., it can be started, stopped, and added to other groups. You can also call addPause () 或 insertPause () to add a pause to a sequential animation group.

    QSequentialAnimationGroup *group = new QSequentialAnimationGroup;
    group->addAnimation(anim1);
    group->addAnimation(anim2);
    group->start();
					

在此范例中， anim1 and anim2 are two already set up QPropertyAnimation s.

另请参阅 QAnimationGroup , QAbstractAnimation ，和 动画框架 .

特性文档编制

currentAnimation : QAbstractAnimation * const

Returns the animation in the current time.

访问函数：

QAbstractAnimation *

currentAnimation () const

通知程序信号：

void	currentAnimationChanged (QAbstractAnimation * current )

成员函数文档编制

QSequentialAnimationGroup:: QSequentialAnimationGroup ( QObject * parent = nullptr)

Constructs a QSequentialAnimationGroup. parent 会被传递给 QObject 的构造函数。

[signal] void QSequentialAnimationGroup:: currentAnimationChanged ( QAbstractAnimation * current )

QSequentialAnimationGroup emits this signal when currentAnimation has been changed. current is the current animation.

注意： 通知程序信号对于特性 currentAnimation .

另请参阅 currentAnimation ().

[virtual] QSequentialAnimationGroup:: ~QSequentialAnimationGroup ()

Destroys the animation group. It will also destroy all its animations.

QPauseAnimation *QSequentialAnimationGroup:: addPause ( int msecs )

Adds a pause of msecs to this animation group. The pause is considered as a special type of animation, thus animationCount will be increased by one.

另请参阅 insertPause () 和 QAnimationGroup::addAnimation ().

[override virtual] int QSequentialAnimationGroup:: duration () const

重实现： QAbstractAnimation::duration () const.

[override virtual protected] bool QSequentialAnimationGroup:: event ( QEvent * event )

重实现： QAnimationGroup::event (QEvent *event).

QPauseAnimation *QSequentialAnimationGroup:: insertPause ( int index , int msecs )

Inserts a pause of msecs milliseconds at index in this animation group.

另请参阅 addPause () 和 QAnimationGroup::insertAnimation ().

[override virtual protected] void QSequentialAnimationGroup:: updateCurrentTime ( int currentTime )

重实现： QAbstractAnimation::updateCurrentTime (int currentTime).

[override virtual protected] void QSequentialAnimationGroup:: updateDirection ( QAbstractAnimation::Direction direction )

重实现： QAbstractAnimation::updateDirection (QAbstractAnimation::Direction direction).

[override virtual protected] void QSequentialAnimationGroup:: updateState ( QAbstractAnimation::State newState , QAbstractAnimation::State oldState )

重实现： QAbstractAnimation::updateState (QAbstractAnimation::State newState, QAbstractAnimation::State oldState).