GestureEvent - Web API 接口参考 编辑

非标准
该特性是非标准的，请尽量不要在生产环境中使用它！

GestureEvent 是 WebKit 的专有接口，提供多点触控的信息。这个接口的事件包括 gesturestart, gesturechange 和 gestureend.

GestureEvent 继承自 UIEvent，后者又继承自Event。

构造函数

GestureEvent()

Creates a GestureEvent object.

属性

This interface also inherits properties of its parents, UIEvent and Event.

GestureEvent.rotation 只读

Change in rotation (in degrees) since the event's beginning. Positive values indicate clockwise rotation; negative values indicate anticlockwise rotation. Initial value: 0.0

GestureEvent.scale 只读

Distance between two digits since the event's beginning. Expressed as a floating-point multiple of the initial distance between the digits at the beginning of the gesture. Values below 1.0 indicate an inward pinch (zoom out). Values above 1.0 indicate an outward unpinch (zoom in). Initial value: 1.0

方法

This interface also inherits methods of its parents, UIEvent and Event.

GestureEvent.initGestureEvent()

Initializes the value of an GestureEvent. If the event has already being dispatched, this method does nothing.

手势事件类型

• gesturestart
• gesturechange
• gestureend

规范

不属于任何规范。苹果在Safari Developer Library中描述了这个接口。

Browser compatibility

BCD tables only load in the browser

参见

• MSGestureEvent
• MSGestureStart
• MSGestureEnd
• MSGestureTap
• MSGestureHold
• MSGestureChange
• MSInertiaStart