Class: InputSystem

输入系统（管理鼠标或触摸信息和状态）

Hierarchy

• EventTarget

  ↳ InputSystem

Table of contents

Constructors

• constructor

Properties

• button
• buttons
• dropTarget
• dx
• dxInWorld
• dy
• dyInWorld
• event
• idleTimeout
• isDragEnd
• isDragStart
• isDraging
• isIdle
• isPointerDown
• isPointerOn
• isRightButton
• mouseoverTarget
• pointerDownX
• pointerDownY
• preMouseoverTarget
• preTarget
• previous
• skipPointerMovePicking
• target
• type
• x
• xInLocal
• xInWorld
• y
• yInLocal
• yInWorld

Methods

• addEventListener
• dispatchEvent
• hasListener
• preventDefault
• removeEventListener

Constructors

constructor

new InputSystem(stage)

Parameters

Name	Type
stage	Stage

Overrides

EventTarget.constructor

Properties

button

button: number = 0

---

buttons

buttons: number = 0

---

dropTarget

Optional dropTarget: NE

当前拖拽时的目标对象

---

dx

dx: number

相对于上一次鼠标或指针x的移动增量（canvas坐标系）

---

dxInWorld

dxInWorld: number

世界坐标系下的x坐标增量

---

dy

dy: number

相对于上一次鼠标或指针y的移动增量（canvas坐标系）

---

dyInWorld

dyInWorld: number

世界坐标系下的y坐标增量

---

event

event: PointerEvent | TouchEvent

原始的事件对象

---

idleTimeout

idleTimeout: number = 50

鼠标或指针空闲时间, 50毫秒内没有动作时认为空闲

---

isDragEnd

isDragEnd: boolean = false

状态: 是否拖拽结束

---

isDragStart

isDragStart: boolean = false

状态: 是否拖拽的开始

---

isDraging

isDraging: boolean = false

状态: 是否在拖拽中

---

isIdle

isIdle: boolean

状态: 鼠标或指针是否空闲

---

isPointerDown

isPointerDown: boolean = false

鼠标或指针是否按下

---

isPointerOn

isPointerOn: boolean = false

状态: 鼠标或指针是否在画布上

---

isRightButton

isRightButton: boolean = false

是否右键 (鼠标设备时)

---

mouseoverTarget

Optional mouseoverTarget: NE

当前鼠标指向的对象

---

pointerDownX

pointerDownX: number = 0

鼠标按下时的坐标（canvas坐标）

---

pointerDownY

pointerDownY: number = 0

鼠标松开时的坐标(canvas坐标)

---

preMouseoverTarget

Optional preMouseoverTarget: NE

上一次鼠标指向的对象

---

preTarget

Optional preTarget: NE

上一次鼠标选中的对象

---

previous

previous: Object

上一次事件的状态记录

Type declaration

Name	Type
type	string
x	number
y	number
dx	number
dy	number
xInWorld	number
yInWorld	number
dxInWorld	number
dyInWorld	number
isDraging	boolean
isPointDown	boolean
isPointerOn	boolean
isDragStart	boolean
isDragEnd	boolean
timeStamp	number

---

skipPointerMovePicking

skipPointerMovePicking: boolean = false

忽略一些事件 来提高性能、降低能耗

图元对象不再触发和响应 pointermove、pointerenter、pointerout事件

---

target

Optional target: NE

当前鼠标选中的对象

---

type

type: "pointerdown" | "pointerup" | "pointermove" | "pointerenter" | "pointerout" | "click" | "dblclick" | "touchmove" | "dragend" | "drop" | "dragover" | "dragstart" | "touchend" | "touchstart" | "wheel"

---

x

x: number = -1

鼠标或指针的屏幕坐标x(canvas左上角为0,0)

---

xInLocal

xInLocal: number

鼠标指针在当前对象的x坐标

---

xInWorld

xInWorld: number

鼠标或指针在世界坐标系下的x坐标

---

y

y: number = -1

鼠标或指针的屏幕坐标y(canvas左上角为0,0)

---

yInLocal

yInLocal: number

鼠标指针在当前对象的y坐标

---

yInWorld

yInWorld: number

鼠标或指针在世界坐标系下的y坐标

Methods

addEventListener

addEventListener(type, callback): void

增加事件监听

Parameters

Name	Type	Description
type	"pointerdown" | "pointerup" | "pointermove" | "pointerenter" | "pointerout" | "click" | "dblclick" | "touchmove" | "dragend" | "drop" | "dragover" | "dragstart" | "touchend" | "touchstart" | "wheel"	事件类型
callback	Function

Returns

void

Overrides

EventTarget.addEventListener

---

dispatchEvent

dispatchEvent(event): void

分发事件

Parameters

Name	Type
event	Event | EventBase

Returns

void

Inherited from

EventTarget.dispatchEvent

---

hasListener

hasListener(type): boolean

是否有该类型的监听

Parameters

Name	Type
type	"pointerdown" | "pointerup" | "pointermove" | "pointerenter" | "pointerout" | "click" | "dblclick" | "touchmove" | "dragend" | "drop" | "dragover" | "dragstart" | "touchend" | "touchstart" | "wheel"

Returns

boolean

Overrides

EventTarget.hasListener

---

preventDefault

preventDefault(): void

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