@jtopo/core / InputSystem

Class: InputSystem<T>

输入系统（管理鼠标或触摸信息和状态）, 基类

Type parameters

Name
T

Hierarchy

• EventTarget<EventsMap_2>

  ↳ InputSystem

Table of contents

Constructors

• constructor

Properties

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

Methods

• addEventListener
• dispatchEvent
• hasListener
• on
• preventDefault
• removeEventListener
• reset

Constructors

constructor

new InputSystem<T>(domElement)

Type parameters

Name
T

Parameters

Name	Type
domElement	HTMLElement

Overrides

EventTarget.constructor

Properties

button

button: number

---

buttons

buttons: number

---

domElement

domElement: HTMLElement

---

dropTarget

dropTarget: T

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

---

eventObservable

eventObservable: Observable<PointerEvent | TouchEvent>

---

idleTimeout

idleTimeout: number

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

状态: 是否拖拽结束

---

isDragStart

isDragStart: boolean

状态: 是否拖拽的开始

---

isDraging

isDraging: boolean

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

鼠标或指针是否按下

---

isPointerOn

isPointerOn: boolean

状态: 鼠标或指针是否在画布上

---

isRightButton

isRightButton: boolean

是否右键 (鼠标设备时)

---

mouseoverTarget

mouseoverTarget: T

当前鼠标指向的对象

---

pointerDownX

pointerDownX: number

鼠标按下时的坐标（canvas坐标）

---

pointerDownY

pointerDownY: number

鼠标松开时的坐标(canvas坐标)

---

preMouseoverTarget

preMouseoverTarget: T

上一次鼠标指向的对象

---

preTarget

preTarget: T

上一次鼠标选中的对象

---

previous

previous: PreviousType

上一次事件的状态记录

---

skipPointerMovePicking

skipPointerMovePicking: boolean

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

target: T

当前鼠标选中的对象

---

type

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

---

x

x: number

鼠标或指针的屏幕坐标x(canvas左上角为0,0)

---

xInWorld

xInWorld: number

鼠标或指针在世界坐标系下的x坐标

---

y

y: number

鼠标或指针的屏幕坐标y(canvas左上角为0,0)

---

yInWorld

yInWorld: number

鼠标或指针在世界坐标系下的y坐标

Methods

addEventListener

addEventListener<K>(type, callback): () => void

增加事件监听

Type parameters

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

Parameters

Name	Type	Description
type	K	事件类型
callback	EventCallback_2<EventsMap_2[K]>

Returns

fn

(): void

增加事件监听

Param

事件类型

Param

Returns

void

Inherited from

EventTarget.addEventListener

---

dispatchEvent

dispatchEvent(event): void

分发事件

Parameters

Name	Type
event	Object

Returns

void

Inherited from

EventTarget.dispatchEvent

---

hasListener

hasListener<K>(type): boolean

是否有该类型的监听

Type parameters

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

Parameters

Name	Type
type	K

Returns

boolean

Inherited from

EventTarget.hasListener

---

on

on<K>(type, callback): () => void

addEventLister的别名

Type parameters

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

Parameters

Name	Type
type	K
callback	EventCallback_2<EventsMap_2[K]>

Returns

fn

(): void

addEventLister的别名

Returns

void

Inherited from

EventTarget.on

---

preventDefault

preventDefault(): void

Deprecated

Returns

void

---

removeEventListener

removeEventListener<K>(type, callback): any

移除一个事件监听

Type parameters

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

Parameters

Name	Type
type	K
callback	EventCallback_2<EventsMap_2[K]>

Returns

any

Inherited from

EventTarget.removeEventListener

---

reset

reset(): void

Returns

void