Class: InputSystem

输入系统（管理鼠标信息和状态）

Hierarchy

• EventTarget

  ↳ InputSystem

Table of contents

Constructors

• constructor

Properties

• button
• buttons
• distanceRatio
• dropTarget
• dx
• dy
• event
• eventObservable
• idleTimeout
• isDragEnd
• isDragStart
• isDraging
• isIdle
• isMouseDown
• isMouseOn
• mouseDownX
• mouseDownY
• mouseoverTarget
• previous
• skipPointerMovePicking
• stage
• target
• touchesDistance
• type
• wheelZoom
• x
• y

Accessors

• pickedObject

Methods

• _initEvent
• addEventListener
• dispatchEvent
• hasListener
• isRightButton
• mouseEventForwardToCanvas
• on
• pickObject
• preventDefault
• removeEventListener
• updateMouseInfo

Constructors

constructor

new InputSystem()

Overrides

EventTarget.constructor

Properties

button

button: number = 0

---

buttons

buttons: number = 0

---

distanceRatio

distanceRatio: number = 1

---

dropTarget

dropTarget: DisplayObject

当前拖拽时的目标对象

---

dx

dx: number

相对于上一次鼠标x的移动增量（canvas坐标）

---

dy

dy: number

相对于上一次鼠标y的移动增量（canvas坐标）

---

event

event: MouseEvent

原始的事件对象

---

eventObservable

eventObservable: Observable

---

idleTimeout

idleTimeout: number = 50

鼠标空闲时间, 50毫秒内没有动作时认为空闲

---

isDragEnd

isDragEnd: boolean = false

是否拖拽结束

---

isDragStart

isDragStart: boolean = false

是否拖拽的开始

---

isDraging

isDraging: boolean = false

是否在拖拽中

---

isIdle

isIdle: boolean

鼠标是否空闲

---

isMouseDown

isMouseDown: boolean = false

鼠标是否按下

---

isMouseOn

isMouseOn: boolean = false

鼠标是否在画布上

---

mouseDownX

mouseDownX: number = 0

鼠标按下时的坐标（canvas坐标）

---

mouseDownY

mouseDownY: number = 0

鼠标松开时的坐标(canvas坐标)

---

mouseoverTarget

mouseoverTarget: DisplayObject

当前鼠标指向的对象

---

previous

previous: any

上一次事件的状态记录

---

skipPointerMovePicking

skipPointerMovePicking: boolean = false

忽略将提高性能、降低能耗

对象不再触发和响应 mousemove、mouseenter、mouseout事件

---

stage

stage: Stage

---

target

Optional target: DisplayObject

当前鼠标选中的对象

---

touchesDistance

touchesDistance: number = 0

---

type

type: string

---

wheelZoom

wheelZoom: boolean = true

鼠标缩放开关，为false时，鼠标缩放将不起作用

---

x

x: number = -1

鼠标的屏幕坐标x(canvas左上角为0,0)

---

y

y: number = -1

鼠标的屏幕坐标y(canvas左上角为0,0)

Accessors

pickedObject

get pickedObject(): DisplayObject

当前鼠标选中的对象, 已过时，使用 target 替代，例如：stage.inputSystem.target

Deprecated

Returns

DisplayObject

Methods

_initEvent

_initEvent(stage): void

Parameters

Name	Type
stage	Stage

Returns

void

---

addEventListener

addEventListener(type, callback): void

增加事件监听

Parameters

Name	Type	Description
type	string	事件类型
callback	Function

Returns

void

Inherited from

EventTarget.addEventListener

---

dispatchEvent

dispatchEvent(event): void

分发事件

Parameters

Name	Type
event	any

Returns

void

Inherited from

EventTarget.dispatchEvent

---

hasListener

hasListener(type): boolean

是否有该类型的监听

Parameters

Name	Type
type	string

Returns

boolean

Inherited from

EventTarget.hasListener

---

isRightButton

isRightButton(): boolean

是否右键

Returns

boolean

---

mouseEventForwardToCanvas

mouseEventForwardToCanvas(canvas): void

Parameters

Name	Type
canvas	HTMLCanvasElement

Returns

void

---

on

on(type, callback): void

增加监听事件, 功能完全等同于addEventListener，一种简写

Parameters

Name	Type	Description
type	string	事件类型
callback	Function	事件处理函数

Returns

void

Inherited from

EventTarget.on

---

pickObject

pickObject(target): void

Parameters

Name	Type
target	DisplayObject

Returns

void

---

preventDefault

preventDefault(): void

已过时，请使用：inputSystem.event.preventDefault()

Deprecated

Returns

void

---

removeEventListener

removeEventListener(type, callback): any

移除一个事件监听

Parameters

Name	Type
type	string
callback	Function

Returns

any

Inherited from

EventTarget.removeEventListener

---

updateMouseInfo

updateMouseInfo(mouseEvent, type): void

Deprecated

Parameters

Name	Type
mouseEvent	MouseEvent
type	string

Returns

void