ScreenSpaceEventHandler - CesiumJS API 文档

new Cesium.ScreenSpaceEventHandler(element)

处理用户输入事件. 自定义函数可以添加到当用户输入输入时.

Name	Type	Default	Description
`element`	HTMLCanvasElement	`文档`	optional 添加事件的内容 .

Members

static Cesium.ScreenSpaceEventHandler.mouseEmulationIgnoreMilliseconds : number

鼠标事件将在之后禁用时间, 以毫秒计接收任何触摸事件,从而忽略任何模拟鼠标事件.

Default Value: 800

static Cesium.ScreenSpaceEventHandler.touchHoldDelayMilliseconds : number

The amount of time, in milliseconds, before a touch on the screen becomes a 抚摸和抱住.

Default Value: 1500

Methods

destroy()

删除此对象所持有的听众.

Once an object is destroyed, it should not be used; calling any function other than isDestroyed will result in a DeveloperError exception. Therefore, assign the return value (undefined) to the object as done in the example.

Throws:

DeveloperError : This object was destroyed, i.e., destroy() was called.

Example:

handler = handler && handler.destroy();

See:

ScreenSpaceEventHandler#isDestroyed

getInputAction(type, modifier) → ScreenSpaceEventHandler.PositionedEventCallback|ScreenSpaceEventHandler.MotionEventCallback|ScreenSpaceEventHandler.WheelEventCallback|ScreenSpaceEventHandler.TwoPointEventCallback|ScreenSpaceEventHandler.TwoPointMotionEventCallback

返回输入事件时要执行的函数.

Name	Type	Description
`type`	ScreenSpaceEventType	输入事件的 ScreenSpaceEventType .
`modifier`	KeyboardEventModifier	optional A KeyboardEventModifier key that is held when a `type` event occurs.

Returns:

在输入事件上要执行的函数 .

See:

isDestroyed() → boolean

如果此对象被销毁, 返回真实; 否则, 错误 .

If this object was destroyed, it should not be used; calling any function other than isDestroyed will result in a DeveloperError exception.

Returns:

true if this object was destroyed; otherwise, false.

See:

ScreenSpaceEventHandler#destroy

removeInputAction(type, modifier)

删除输入事件上要执行的函数.

Name	Type	Description
`type`	ScreenSpaceEventType	输入事件的 ScreenSpaceEventType .
`modifier`	KeyboardEventModifier	optional A KeyboardEventModifier key that is held when a `type` event occurs.

See:

setInputAction(action, type, modifier)

设置要执行的函数 .

Name	Type	Description
`action`	ScreenSpaceEventHandler.PositionedEventCallback \| ScreenSpaceEventHandler.MotionEventCallback \| ScreenSpaceEventHandler.WheelEventCallback \| ScreenSpaceEventHandler.TwoPointEventCallback \| ScreenSpaceEventHandler.TwoPointMotionEventCallback	当输入事件发生时要执行的函数 .
`type`	ScreenSpaceEventType	输入事件的 ScreenSpaceEventType .
`modifier`	KeyboardEventModifier	optional A KeyboardEventModifier key that is held when a `type` event occurs.

See:

Type Definitions

Cesium.ScreenSpaceEventHandler.MotionEvent

一个事件从一个位置开始,从另一个位置结束.

Properties:

Name	Type	Description
`startPosition`	Cartesian2
`endPosition`	Cartesian2

Cesium.ScreenSpaceEventHandler.MotionEventCallback(event)

Name	Type	Description
`event`	ScreenSpaceEventHandler.MotionEvent	引发听众的事件

Cesium.ScreenSpaceEventHandler.PositionedEvent

发生在屏幕上一个位置的事件.

Properties:

Name	Type	Description
`position`	Cartesian2

Cesium.ScreenSpaceEventHandler.PositionedEventCallback(event)

Name	Type	Description
`event`	ScreenSpaceEventHandler.PositionedEvent	引发听众的事件

Cesium.ScreenSpaceEventHandler.TwoPointEvent

发生在屏幕上两个位置的事件.

Properties:

Name	Type	Description
`position1`	Cartesian2
`position2`	Cartesian2

Cesium.ScreenSpaceEventHandler.TwoPointEventCallback(event)

Name	Type	Description
`event`	ScreenSpaceEventHandler.TwoPointEvent	引发听众的事件

Cesium.ScreenSpaceEventHandler.TwoPointMotionEvent

活动从屏幕上的两个位置开始,转移到另外两个位置.

Properties:

Name	Type	Description
`position1`	Cartesian2
`position2`	Cartesian2
`previousPosition1`	Cartesian2
`previousPosition2`	Cartesian2

Cesium.ScreenSpaceEventHandler.TwoPointMotionEventCallback(event)

Name	Type	Description
`event`	ScreenSpaceEventHandler.TwoPointMotionEvent	引发听众的事件

Cesium.ScreenSpaceEventHandler.WheelEventCallback(delta)

Name	Type	Description
`delta`	number	鼠标轮子移动的量