1437 lines
60 KiB
TypeScript
1437 lines
60 KiB
TypeScript
/*
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* @Author: steveJobs
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* @Email: icipiqkm@gmail.com
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* @Date: 2021-8-1 01:15:04
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* @Last Modified by: steveJobs
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* @Last Modified time: 2021-8-1 14:35:43
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* @Description:
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*/
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import { _decorator, Component, Node, ccenum, UITransform, SystemEventType, director, Vec3, EventHandler, instantiate, Prefab, Size, Vec2, size, ScrollView, PageView, PageViewIndicator } from 'cc';
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import { SuperScrollview } from './super-scrollview';
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const { ccclass, property, requireComponent } = _decorator;
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const EPSILON = 1e-5
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enum Type {
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HORIZONTAL = 0,
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VERTICAL = 1,
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}
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ccenum(Type)
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enum VerticalAxisDirection {
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TOP_TO_BOTTOM = 0,
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BOTTOM_TO_TOP = 1
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}
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ccenum(VerticalAxisDirection)
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enum HorizontalAxisDirection {
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LEFT_TO_RIGHT = 0,
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RIGHT_TO_LEFT = 1
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}
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ccenum(HorizontalAxisDirection)
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enum ScrollDirection {
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NONE = 0,
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HEADER = 1,
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FOOTER = 2,
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}
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enum IndexVerticalAxisDirection {
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TOP = 0,
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BOTTOM = 1,
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}
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ccenum(IndexVerticalAxisDirection)
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enum IndexHorizontalAxisDirection {
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LEFT = 0,
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RIGHT = 1
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}
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ccenum(IndexHorizontalAxisDirection)
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@ccclass('SuperLayout')
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@requireComponent(UITransform)
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export class SuperLayout extends Component {
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static VerticalAxisDirection = VerticalAxisDirection
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static HorizontalAxisDirection = HorizontalAxisDirection
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@property(SuperScrollview) scrollView!: SuperScrollview
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@property(UITransform) view!: UITransform
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@property(Prefab) prefab!: Prefab
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@property({ type: Type }) layoutType: Type = Type.VERTICAL
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@property({
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type: IndexVerticalAxisDirection,
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visible: function () { return (this as any).layoutType == Type.VERTICAL && !(this as any).autoCenter }
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}) indexVerticalAxisDirection = IndexVerticalAxisDirection.TOP
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@property({
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type: IndexHorizontalAxisDirection,
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visible: function () { return (this as any).layoutType == Type.HORIZONTAL && !(this as any).autoCenter }
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}) indexHorizontalAxisDirection = IndexHorizontalAxisDirection.LEFT
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@property({ type: VerticalAxisDirection }) verticalAxisDirection = VerticalAxisDirection.TOP_TO_BOTTOM
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@property({ type: HorizontalAxisDirection }) horizontalAxisDirection = HorizontalAxisDirection.LEFT_TO_RIGHT
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@property({ tooltip: "最小值=1，大于1就是Grid模式" }) groupItemTotal: number = 1
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@property({ tooltip: "决定最多创建Prefab的数量" }) multiple: number = 2
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@property({ tooltip: "顶部填充" }) paddingTop: number = 0
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@property({ tooltip: "底部填充" }) paddingBottom: number = 0
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@property({ tooltip: "左侧填充" }) paddingLeft: number = 0
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@property({ tooltip: "右侧填充" }) paddingRight: number = 0
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@property({ tooltip: "横轴间距" }) spacingX: number = 0
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@property({ tooltip: "纵轴间距" }) spacingY: number = 0
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@property({ tooltip: "计算缩放后的尺寸" }) affectedByScale: boolean = false
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@property({ tooltip: "开启翻页模式" }) isPageView: boolean = false
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@property({
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tooltip: "每个页面翻页时所需时间。单位：秒",
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visible: function () { return (this as any).isPageView }
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}) pageTurningSpeed = 0.3
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@property({
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type: PageViewIndicator,
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visible: function () { return (this as any).isPageView }
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}) indicator!: PageViewIndicator
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@property({
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slide: true,
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range: [0, 1, 0.01],
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tooltip: "滚动临界值，默认单位百分比，当拖拽超出该数值时，松开会自动滚动下一页，小于时则还原",
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visible: function () { return (this as any).isPageView }
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}) scrollThreshold = 0.5
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@property({
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tooltip: "快速滑动翻页临界值。当用户快速滑动时，会根据滑动开始和结束的距离与时间计算出一个速度值,该值与此临界值相比较，如果大于临界值，则进行自动翻页",
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visible: function () { return (this as any).isPageView }
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}) autoPageTurningThreshold = 100
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@property({
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type: EventHandler,
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visible: function () { return (this as any).isPageView }
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}) pageEvents: EventHandler[] = []
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@property({
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tooltip: "开启自动居中",
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visible: function () { return !(this as any).isPageView }
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}) autoCenter: boolean = false
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@property({
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tooltip: "自动居中的滚动时间",
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visible: function () { return (this as any).autoCenter }
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}) centerTime: number = 1
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@property({
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type: Node,
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tooltip: "自动居中的参考节点，如果为空、则默认选择View中心",
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visible: function () { return (this as any).autoCenter }
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}) centerNode!: Node
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@property({
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type: Vec2,
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tooltip: "自动居中时、Item的居中锚点",
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visible: function () { return (this as any).autoCenter }
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}) centerAnchor: Vec2 = new Vec2(.5, .5)
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@property({ tooltip: "上/左 无限循环" }) headerLoop: boolean = false
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@property({ tooltip: "下/右 无限循环" }) footerLoop: boolean = false
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@property(EventHandler) refreshItemEvents: EventHandler[] = []
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private stretchLock: {
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index?: number,
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timeInSecond?: number,
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boundary?: Vec3,
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reverse?: boolean,
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} = {}
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private _currPageIndex: number = 0
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get currPageIndex() {
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return this._currPageIndex
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}
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private _lastPageIndex: number = 0
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get lastPageIndex() {
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return this._lastPageIndex
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}
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private isRestart: boolean = false
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/** 当前滚动方向 */
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private scrollDirection: ScrollDirection = ScrollDirection.NONE
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/** 是否垂直滚动 */
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get vertical(): boolean { return this.layoutType == Type.VERTICAL }
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/** 是否水平滚动 */
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get horizontal(): boolean { return this.layoutType == Type.HORIZONTAL }
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get transform(): UITransform | null { return this.node._uiProps.uiTransformComp }
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/** View 可容纳的宽度 */
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get accommodWidth() {
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return this.view.width - this.paddingLeft - this.paddingRight
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}
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/** View 可容纳的高度 */
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get accommodHeight() {
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return this.view.height - this.paddingTop - this.paddingBottom
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}
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/** 头部的节点 */
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get header(): UITransform | null {
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if (this.node.children.length == 0) return null
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return this.node.children[0]._uiProps.uiTransformComp
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}
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/** 底部的节点 */
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get footer(): UITransform | null {
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if (this.node.children.length == 0) return null
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return this.node.children[this.node.children.length - 1]._uiProps.uiTransformComp
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}
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/** 头部索引 */
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get headerIndex(): number {
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if (!this.header) return -1
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let node: any = this.header.node
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return node["__index"]
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}
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/** 底部索引 */
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get footerIndex(): number {
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if (!this.footer) return -1
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let node: any = this.footer.node
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return node["__index"]
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}
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/** Item起始位置 */
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get viewStartPoint(): Vec3 {
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let pos = new Vec3()
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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pos.x = this.view.width * -0.5 + this.paddingLeft
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} else {
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pos.x = this.view.width * 0.5 - this.paddingRight
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}
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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pos.y = this.view.height * 0.5 - this.paddingTop
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} else {
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pos.y = this.view.height * -0.5 + this.paddingBottom
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}
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return pos
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}
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/** View 头部边界 */
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get viewHeaderBoundary(): number {
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return this.vertical ? this.view.height * 0.5 : this.view.width * -0.5
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}
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/** View 底部边界 */
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get viewFooterBoundary(): number {
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return this.vertical ? this.view.height * -0.5 : this.view.width * 0.5
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}
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/** 头部节点边界 */
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get headerBoundary(): number {
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if (!this.header) return 0
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if (this.vertical) {
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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return this.node.position.y + this.getItemYMax(this.header) + this.paddingTop
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} else {
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return this.node.position.y + this.getItemYMin(this.header) - this.paddingBottom
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}
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} else {
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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return this.node.position.x + this.getItemXMin(this.header) - this.paddingLeft
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} else {
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return this.node.position.x + this.getItemXMax(this.header) + this.paddingRight
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}
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}
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}
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/** 底部节点边界 */
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get footerBoundary(): number {
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if (!this.footer) return 0
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if (this.vertical) {
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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return this.node.position.y + this.getItemYMin(this.footer) - this.paddingBottom
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} else {
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return this.node.position.y + this.getItemYMax(this.footer) + this.paddingTop
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}
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} else {
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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return this.node.position.x + this.getItemXMax(this.footer) + this.paddingRight
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} else {
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return this.node.position.x + this.getItemXMin(this.footer) - this.paddingLeft
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}
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}
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}
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/** 自动居中节点头部边界 */
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get centerHeaderBoundary() {
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let key = this.vertical ? "y" : "x"
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var offset
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if (this.centerNode) {
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offset = this.viewHeaderBoundary - (this.centerNode.position as any)[key]
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} else {
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offset = this.viewHeaderBoundary - (this.view.node.position as any)[key]
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}
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if (this.vertical && this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM || this.horizontal && this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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return this.headerBoundary + offset
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} else {
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return this.footerBoundary + offset
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}
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}
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/** 自动居中节点底部边界 */
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get centerFooterBoundary() {
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let key = this.vertical ? "y" : "x"
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var offset
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if (this.centerNode) {
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offset = this.viewFooterBoundary - (this.centerNode.position as any)[key]
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} else {
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offset = this.viewFooterBoundary - (this.view.node.position as any)[key]
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}
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if (this.vertical && this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM || this.horizontal && this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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return this.footerBoundary + offset
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} else {
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return this.headerBoundary + offset
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}
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}
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/** 是否超出左侧边界 */
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get isOfLeftBoundary(): number {
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if (this.vertical) return 0
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if (this.autoCenter) {
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if (this.scrollDirection == ScrollDirection.HEADER) {
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return this.centerHeaderBoundary
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}
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return 0
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}
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if (this.headerLoop) {
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if (this.header) return 0
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return this.viewHeaderBoundary + this.node.position.x
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}
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if (!this.header || this.fixedItemWidth <= this.view.width) {
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return this.viewHeaderBoundary + this.node.position.x
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}
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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if (this.headerIndex == 0) {
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return this.headerBoundary
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}
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} else {
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if (this.footerIndex == this.itemTotal - 1) {
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return this.footerBoundary
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}
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}
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return 0
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}
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/** 是否超出顶部边界 */
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get isOfTopBoundary(): number {
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if (!this.vertical) return 0
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if (this.autoCenter) {
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if (this.scrollDirection == ScrollDirection.HEADER) {
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return this.centerHeaderBoundary
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}
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return 0
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}
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if (this.headerLoop) {
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if (this.header) return 0
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return this.viewHeaderBoundary + this.node.position.y
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}
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if (!this.header || this.fixedItemHeight <= this.view.height) {
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return this.viewHeaderBoundary + this.node.position.y
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}
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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if (this.headerIndex == 0) {
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return this.headerBoundary
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}
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} else {
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if (this.footerIndex == this.itemTotal - 1) {
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return this.footerBoundary
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}
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}
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return 0
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}
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/** 是否超出右侧边界 */
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get isOfRightBoundary(): number {
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if (this.vertical) return 0
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if (this.autoCenter) {
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if (this.scrollDirection == ScrollDirection.FOOTER) {
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return this.centerFooterBoundary
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}
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return 0
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}
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if (this.footerLoop) {
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if (this.footer) return 0
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return this.viewFooterBoundary + this.node.position.x
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}
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if (!this.footer || this.fixedItemWidth <= this.view.width) {
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return this.viewFooterBoundary + this.node.position.x
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}
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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if (this.footerIndex == this.itemTotal - 1) {
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return this.footerBoundary
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}
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} else {
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if (this.headerIndex == 0) {
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return this.headerBoundary
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}
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}
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return 0
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}
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/** 是否超出底部边界 */
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get isOfButtomBoundary(): number {
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if (!this.vertical) return 0
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if (this.autoCenter) {
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if (this.scrollDirection == ScrollDirection.FOOTER) {
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return this.centerFooterBoundary
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}
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return 0
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}
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if (this.footerLoop) {
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if (this.footer) return 0
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return this.viewFooterBoundary + this.node.position.y
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}
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if (!this.footer || this.fixedItemHeight <= this.view.height) {
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return this.viewFooterBoundary + this.node.position.y
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}
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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if (this.footerIndex == this.itemTotal - 1) {
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return this.footerBoundary
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}
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} else {
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if (this.headerIndex == 0) {
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return this.headerBoundary
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}
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}
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return 0
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}
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/** 从头部到底部的所有Item高度总和 */
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get fixedItemHeight(): number {
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if (!this.header) return 0
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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return Math.abs(this.getItemYMax(this.header)) + Math.abs(this.getItemYMin(this.footer))
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} else {
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return Math.abs(this.getItemYMin(this.header)) + Math.abs(this.getItemYMax(this.footer))
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}
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}
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/** 从头部到底部的所有Item宽度总和 */
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get fixedItemWidth(): number {
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if (!this.header) return 0
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if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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return Math.abs(this.getItemXMin(this.header)) + Math.abs(this.getItemXMax(this.footer))
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} else {
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return Math.abs(this.getItemXMax(this.header)) + Math.abs(this.getItemXMin(this.footer))
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}
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}
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/** 返回 header到 footer 之间的整体尺寸 如果Item数量不足以撑开View 则返回View尺寸 最小值是View尺寸 */
|
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get contentSize(): Size {
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if (this.node.children.length == 0) return this.view.contentSize
|
||
let size = new Size(this.view.contentSize.width, this.view.contentSize.height)
|
||
if (this.vertical) {
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if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
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size.height = this.headerBoundary + -this.footerBoundary
|
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} else {
|
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size.height = this.footerBoundary + -this.headerBoundary
|
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}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
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size.width = this.footerBoundary + -this.headerBoundary
|
||
} else {
|
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size.width = this.headerBoundary + -this.footerBoundary
|
||
}
|
||
}
|
||
if (size.width < this.view.contentSize.width) {
|
||
size.width = this.view.contentSize.width
|
||
}
|
||
if (size.height < this.view.contentSize.height) {
|
||
size.height = this.view.contentSize.height
|
||
}
|
||
return size
|
||
}
|
||
private prevPos: Vec3 = new Vec3(0, 0, 0)
|
||
private _maxPrefabTotal: number = 0
|
||
/** 已被创建的Item数量 */
|
||
get maxPrefabTotal(): number { return this._maxPrefabTotal }
|
||
private currentCreateItemTotal: number = 0
|
||
private _itemTotal: number = 0
|
||
/** 数据长度 */
|
||
get itemTotal(): number { return this._itemTotal }
|
||
private _centerPosition!: Vec3
|
||
/** 自动居中的参考位置 */
|
||
get centerPosition(): Vec3 {
|
||
if (!this._centerPosition) {
|
||
this._centerPosition = new Vec3()
|
||
if (this.autoCenter) {
|
||
if (this.centerNode) {
|
||
let worldPos = this.centerNode.parent?._uiProps.uiTransformComp?.convertToWorldSpaceAR(this.centerNode.position)!
|
||
this._centerPosition = this.view.convertToNodeSpaceAR(worldPos)
|
||
}
|
||
} else {
|
||
if (this.vertical) {
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.TOP) {
|
||
this._centerPosition.y = this.viewHeaderBoundary
|
||
} else {
|
||
this._centerPosition.y = this.viewFooterBoundary
|
||
}
|
||
} else {
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.LEFT) {
|
||
this._centerPosition.x = this.viewHeaderBoundary
|
||
} else {
|
||
this._centerPosition.x = this.viewFooterBoundary
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return this._centerPosition
|
||
}
|
||
onLoad() {
|
||
this.transform?.setAnchorPoint(new Vec2(.5, .5))
|
||
this.transform?.setContentSize(this.view.contentSize)
|
||
this.node.setPosition(Vec3.ZERO)
|
||
if (this.isPageView) this.autoCenter = false
|
||
this.scrollView.view?.node.on(Node.EventType.SIZE_CHANGED, this.onViewSizeChange, this)
|
||
Object.defineProperty(this.transform, "contentSize", { get: () => this.contentSize })
|
||
Object.defineProperty(this.transform, "width", { get: () => this.contentSize.width })
|
||
Object.defineProperty(this.transform, "height", { get: () => this.contentSize.height })
|
||
}
|
||
onEnable() {
|
||
this.addEventListener()
|
||
}
|
||
onDisable() {
|
||
this.removeEventListener()
|
||
}
|
||
/**
|
||
* 更新item数量
|
||
* @param count
|
||
* @param onRefreshLastItem 如果你确定只需要刷新最后一个item 那么这个设置成true 就不会刷新所有数据
|
||
*/
|
||
total(count: number, refreshLastItem: boolean = false): this {
|
||
this.currentCreateItemTotal = count
|
||
this.scrollDirection = ScrollDirection.HEADER
|
||
this.createItems(count, refreshLastItem)
|
||
let offset = count - this.itemTotal
|
||
this._itemTotal = count
|
||
this.refreshItems(offset, refreshLastItem)
|
||
if (!refreshLastItem) this.updateItems()
|
||
this.scrollView.startAutoScroll()
|
||
this.scrollView.release()
|
||
if (this.indicator) {
|
||
this.indicator.setPageView((this.scrollView as any));
|
||
}
|
||
if (this.autoCenter) {
|
||
this.scrollToCenter()
|
||
}
|
||
return this
|
||
}
|
||
/**
|
||
* 刷新所有item
|
||
*/
|
||
updateItems(): this {
|
||
this.resetIndexStartToEnd(this.headerIndex)
|
||
return this
|
||
}
|
||
/** 告知组件你的节点尺寸 */
|
||
updateItemSize(node: Node, size: Size) {
|
||
if (this.groupItemTotal > 1) return
|
||
if (!node || !size) return
|
||
(node as any)["__runtime_size"] = size
|
||
this.onChangeChildSize(node._uiProps.uiTransformComp!)
|
||
}
|
||
/** 自动居中到最近Item */
|
||
scrollToCenter() {
|
||
this.soonFinish()
|
||
}
|
||
/** 滚动到头部 */
|
||
scrollToHeader(timeInSecond?: number) {
|
||
var headerOrFooter = 0
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
headerOrFooter = this.viewHeaderBoundary
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.BOTTOM) {
|
||
headerOrFooter -= this.header?.height! + this.paddingTop + this.paddingBottom
|
||
}
|
||
} else {
|
||
headerOrFooter = this.viewFooterBoundary
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.TOP) {
|
||
headerOrFooter += this.header?.height! + this.paddingTop + this.paddingBottom
|
||
}
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
headerOrFooter = this.viewHeaderBoundary
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.RIGHT) {
|
||
headerOrFooter += this.header?.width! + this.paddingLeft + this.paddingRight
|
||
}
|
||
} else {
|
||
headerOrFooter = this.viewFooterBoundary
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.LEFT) {
|
||
headerOrFooter -= this.header?.width! + this.paddingLeft + this.paddingRight
|
||
}
|
||
}
|
||
}
|
||
this.scrollToIndex(0, timeInSecond, new Vec3(headerOrFooter, headerOrFooter))
|
||
|
||
}
|
||
/** 滚动到尾部 */
|
||
scrollToFooter(timeInSecond?: number) {
|
||
var headerOrFooter = 0
|
||
if (this.vertical) {
|
||
if (this.fixedItemHeight < this.view.height) return
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
headerOrFooter = this.viewFooterBoundary
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.BOTTOM) {
|
||
headerOrFooter += this.footer?.height! + this.paddingTop + this.paddingBottom
|
||
}
|
||
} else {
|
||
headerOrFooter = this.viewHeaderBoundary
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.TOP) {
|
||
headerOrFooter -= this.footer?.height! + this.paddingTop + this.paddingBottom
|
||
}
|
||
}
|
||
} else {
|
||
if (this.fixedItemWidth < this.view.width) return
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
headerOrFooter = this.viewFooterBoundary
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.RIGHT) {
|
||
headerOrFooter -= this.footer?.width! + this.paddingLeft + this.paddingRight
|
||
}
|
||
} else {
|
||
headerOrFooter = this.viewHeaderBoundary
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.LEFT) {
|
||
headerOrFooter += this.footer?.width! + this.paddingLeft + this.paddingRight
|
||
}
|
||
}
|
||
}
|
||
this.scrollToIndex(this.itemTotal - 1, timeInSecond, new Vec3(headerOrFooter, headerOrFooter), true)
|
||
}
|
||
private isNearFooter(index: number) {
|
||
let nearFooter = false
|
||
let flag = index > this.footerIndex && index < this.headerIndex
|
||
if (flag) {
|
||
let result = Math.abs(index - this.headerIndex) < Math.abs(index - this.footerIndex)
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
nearFooter = !result
|
||
} else {
|
||
nearFooter = result
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
nearFooter = !result
|
||
} else {
|
||
nearFooter = result
|
||
}
|
||
}
|
||
} else if (index > this.footerIndex) {
|
||
if (this.vertical) {
|
||
nearFooter = this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM ? true : false
|
||
} else {
|
||
nearFooter = this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT ? true : false
|
||
}
|
||
} else if (index < this.headerIndex) {
|
||
if (this.vertical) {
|
||
nearFooter = this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM ? false : true
|
||
} else {
|
||
nearFooter = this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT ? false : true
|
||
}
|
||
}
|
||
return nearFooter
|
||
}
|
||
private getFooterOffset(index: number) {
|
||
let footerOffset = this.footerIndex % this.groupItemTotal
|
||
let indexOffset = index % this.groupItemTotal
|
||
return indexOffset - footerOffset + this.groupItemTotal
|
||
}
|
||
private getHeaderOffset(index: number) {
|
||
let headerOffset = this.headerIndex % this.groupItemTotal
|
||
let indexOffset = index % this.groupItemTotal
|
||
return headerOffset - indexOffset + this.groupItemTotal
|
||
}
|
||
private offsetToHeader(index: number) {
|
||
var offset = 0
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
offset = this.getHeaderOffset(index)
|
||
} else {
|
||
offset = this.getFooterOffset(index)
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
offset = this.getHeaderOffset(index)
|
||
} else {
|
||
offset = this.getFooterOffset(index)
|
||
}
|
||
}
|
||
offset -= this.groupItemTotal
|
||
for (let i = 0; i < offset; i++) {
|
||
this.pushToHeader(true)
|
||
}
|
||
}
|
||
private offsetToFooter(index: number) {
|
||
var offset = 0
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
offset = this.getFooterOffset(index)
|
||
} else {
|
||
offset = this.getHeaderOffset(index)
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
offset = this.getFooterOffset(index)
|
||
} else {
|
||
offset = this.getHeaderOffset(index)
|
||
}
|
||
}
|
||
offset -= this.groupItemTotal
|
||
for (let i = 0; i < offset; i++) {
|
||
this.pushToFooter(true)
|
||
}
|
||
}
|
||
private resetIndexStartToEnd(index: number) {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const child: any = this.node.children[i];
|
||
child["__index"] = index
|
||
index++
|
||
if (this.headerLoop || this.footerLoop) {
|
||
if (index < 0 || index >= this.itemTotal) {
|
||
index = 0
|
||
}
|
||
}
|
||
this.notifyRefreshItem(child)
|
||
}
|
||
}
|
||
private resetIndexEndToStart(index: number) {
|
||
for (let i = this.node.children.length - 1; i >= 0; i--) {
|
||
const child: any = this.node.children[i];
|
||
child["__index"] = index
|
||
index--
|
||
if (this.headerLoop || this.footerLoop) {
|
||
if (index < 0) {
|
||
index = this.itemTotal - 1
|
||
}
|
||
}
|
||
this.notifyRefreshItem(child)
|
||
}
|
||
}
|
||
/** 跳转到指定索引位置 */
|
||
scrollToIndex(index: number, timeInSecond?: number, boundary?: Vec3, reverse: boolean = false) {
|
||
if (isNaN(index) || index < 0 || index > this.itemTotal - 1) return
|
||
this.scrollView.stopAutoScroll()
|
||
if (this.isPageView) {
|
||
this.scrollView.savePageIndex(index)
|
||
}
|
||
var child = this.node.children.find((item: any) => item["__index"] == index)
|
||
var nearFooter = this.isNearFooter(index)
|
||
this.stretchLock.index = index
|
||
this.stretchLock.timeInSecond = timeInSecond
|
||
this.stretchLock.boundary = boundary
|
||
this.stretchLock.reverse = reverse
|
||
if (!child) {
|
||
if (index == 0) {
|
||
this.pushToHeader()
|
||
}
|
||
if (index == this.itemTotal - 1) {
|
||
this.pushToFooter()
|
||
}
|
||
var flag = this.vertical && this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM || !this.vertical && this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT
|
||
if (nearFooter) {
|
||
this.offsetToFooter(index)
|
||
flag ? this.resetIndexEndToStart(index) : this.resetIndexStartToEnd(index)
|
||
} else {
|
||
this.offsetToHeader(index)
|
||
flag ? this.resetIndexStartToEnd(index) : this.resetIndexEndToStart(index)
|
||
}
|
||
child = this.node.children.find((item: any) => item["__index"] == index)
|
||
}
|
||
if (!child) return
|
||
let itemPos = child.getPosition().clone()
|
||
if (!this.autoCenter) {
|
||
if (this.vertical) {
|
||
if (this.indexVerticalAxisDirection == IndexVerticalAxisDirection.TOP) {
|
||
if (!reverse) {
|
||
itemPos.y = this.getItemYMax(child._uiProps.uiTransformComp!) + this.paddingTop
|
||
} else {
|
||
itemPos.y = this.getItemYMin(child._uiProps.uiTransformComp!) - this.paddingBottom
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
itemPos.y = this.getItemYMin(child._uiProps.uiTransformComp!) - this.paddingBottom
|
||
} else {
|
||
itemPos.y = this.getItemYMax(child._uiProps.uiTransformComp!) + this.paddingTop
|
||
}
|
||
}
|
||
} else {
|
||
if (this.indexHorizontalAxisDirection == IndexHorizontalAxisDirection.LEFT) {
|
||
if (!reverse) {
|
||
itemPos.x = this.getItemXMin(child._uiProps.uiTransformComp!) - this.paddingLeft
|
||
} else {
|
||
itemPos.x = this.getItemXMax(child._uiProps.uiTransformComp!) + this.paddingRight
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
itemPos.x = this.getItemXMax(child._uiProps.uiTransformComp!) + this.paddingRight
|
||
} else {
|
||
itemPos.x = this.getItemXMin(child._uiProps.uiTransformComp!) - this.paddingLeft
|
||
}
|
||
}
|
||
}
|
||
}
|
||
let worldPos = this.transform?.convertToWorldSpaceAR(itemPos)!
|
||
let localPos = this.view.convertToNodeSpaceAR(worldPos)
|
||
var multiple
|
||
if (!this.autoCenter && boundary) {
|
||
multiple = boundary
|
||
} else {
|
||
multiple = this.getCenterAnchor(child._uiProps.uiTransformComp!, this.centerPosition)
|
||
}
|
||
localPos.multiply(new Vec3(-1, -1, 1)).add(multiple)
|
||
this.scrollView.scrollToAny(localPos, timeInSecond, true)
|
||
}
|
||
protected async onViewSizeChange() {
|
||
this.isRestart = true
|
||
this.createItems(this.currentCreateItemTotal)
|
||
this.resetChilds(true)
|
||
this.scrollToHeader()
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const child: any = this.node.children[i];
|
||
const transform = child._uiProps.uiTransformComp!
|
||
this.setAndSaveSizeAndScale(transform)
|
||
}
|
||
this.isRestart = false
|
||
}
|
||
protected setAndSaveSizeAndScale(item: UITransform) {
|
||
item.setContentSize(this.getItemSize(item));
|
||
(item.node as any)["__size"] = item.contentSize.clone();
|
||
(item.node as any)["__scale"] = item.node.getScale().clone();
|
||
}
|
||
/** 根据centerAnchor计算自动居中的真实位置 */
|
||
protected getCenterAnchor(item: UITransform, center: Vec3) {
|
||
var pos = center.clone()
|
||
if (this.vertical) {
|
||
let anchor = item.height! * this.centerAnchor.y
|
||
let origin = item.height! * item.anchorY!
|
||
pos.y -= anchor - origin
|
||
} else {
|
||
let anchor = item.width! * this.centerAnchor.x
|
||
let origin = item.width! * item.anchorX!
|
||
pos.x += anchor - origin
|
||
}
|
||
return pos
|
||
}
|
||
/** 滚动即将结束时 跑自动居中的逻辑 */
|
||
protected soonFinish() {
|
||
if (!this.autoCenter) return
|
||
if (this.scrollView.pullRefresh) return
|
||
this.scrollView.stopAutoScroll()
|
||
var findedPos = new Vec3(999999, 999999)
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const child = this.node.children[i];
|
||
let worldPos = this.transform?.convertToWorldSpaceAR(child.position)!
|
||
let localPos = this.view.convertToNodeSpaceAR(worldPos)
|
||
let map = { width: false, height: false }
|
||
var multiple = this.getCenterAnchor(child._uiProps.uiTransformComp!, this.centerPosition)
|
||
let newLocalPos = localPos.subtract(multiple)
|
||
map.width = Math.abs(newLocalPos.x) < Math.abs(findedPos.x)
|
||
map.height = Math.abs(newLocalPos.y) < Math.abs(findedPos.y)
|
||
if (this.vertical && map.height) {
|
||
findedPos = newLocalPos
|
||
} else if (!this.vertical && map.width) {
|
||
findedPos = newLocalPos
|
||
}
|
||
}
|
||
findedPos.multiply(new Vec3(-1, -1, 1))
|
||
this.scrollView.scrollToAny(findedPos, this.centerTime)
|
||
}
|
||
/** 根据groupItemTotal和View可容纳的尺寸 来平均分配Item该有的尺寸 */
|
||
protected getItemSize(item: UITransform): Size {
|
||
let size = new Size()
|
||
if (this.vertical) {
|
||
let spacing = this.spacingX * (this.groupItemTotal - 1)
|
||
size.width = (this.accommodWidth - spacing) / this.groupItemTotal
|
||
size.height = item.height
|
||
} else {
|
||
let spacing = this.spacingY * (this.groupItemTotal - 1)
|
||
size.height = (this.accommodHeight - spacing) / this.groupItemTotal
|
||
size.width = item.width
|
||
}
|
||
return size
|
||
}
|
||
/** 获取Item的YMax */
|
||
protected getItemYMax(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
let height = this.getScaleHeight(item) * (1 - item.anchorY)
|
||
return item.node.position.y + height
|
||
}
|
||
/** 获取Item的YMin */
|
||
protected getItemYMin(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
let height = this.getScaleHeight(item) * item.anchorY
|
||
return item.node.position.y - height
|
||
}
|
||
/** 获取Item的XMax */
|
||
protected getItemXMax(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
let width = this.getScaleWidth(item) * (1 - item.anchorX)
|
||
return item.node.position.x + width
|
||
}
|
||
/** 获取Item的XMin */
|
||
protected getItemXMin(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
let width = this.getScaleWidth(item) * item.anchorX
|
||
return item.node.position.x - width
|
||
}
|
||
/** 获取一组Item中起始位置X */
|
||
protected getStartX(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
var x = 0
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
let width = this.getScaleWidth(item) * item.anchorX
|
||
x = this.viewStartPoint.x + width
|
||
} else {
|
||
let width = this.getScaleWidth(item) * (1 - item.anchorX)
|
||
x = this.viewStartPoint.x - width
|
||
}
|
||
return x
|
||
}
|
||
/** 获取一组Item中结束位置X */
|
||
protected getEndX(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
var x = 0
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
let width = this.getScaleWidth(item) * (1 - item.anchorX)
|
||
x = -this.viewStartPoint.x - width - this.paddingRight + this.paddingLeft
|
||
} else {
|
||
let width = this.getScaleWidth(item) * item.anchorX
|
||
x = -this.viewStartPoint.x + width + this.paddingLeft - this.paddingRight
|
||
}
|
||
return x
|
||
}
|
||
/** 获取一组Item中起始位置Y */
|
||
protected getStartY(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
var y = 0
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
let height = this.getScaleHeight(item) * (1 - item.anchorY)
|
||
y = this.viewStartPoint.y - height
|
||
} else {
|
||
let height = this.getScaleHeight(item) * item.anchorY
|
||
y = this.viewStartPoint.y + height
|
||
}
|
||
return y
|
||
}
|
||
/** 获取一组Item中结束位置Y */
|
||
protected getEndY(item: UITransform | null): number {
|
||
if (!item) return 0
|
||
var y = 0
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
let height = this.getScaleHeight(item) * item.anchorY
|
||
y = -this.viewStartPoint.y + height + this.paddingBottom - this.paddingTop
|
||
} else {
|
||
let height = this.getScaleHeight(item) * (1 - item.anchorY)
|
||
y = -this.viewStartPoint.y - height - this.paddingTop + this.paddingBottom
|
||
}
|
||
return y
|
||
}
|
||
/** relative的顶部是否有也容纳空间 */
|
||
protected isAccommodateByTop(relative: UITransform) {
|
||
var max = this.getItemYMax(relative)
|
||
return max + this.paddingTop < this.accommodHeight * 0.5
|
||
}
|
||
/** relative的底部是否有也容纳空间 */
|
||
protected isAccommodateByBottom(relative: UITransform) {
|
||
var min = this.getItemYMin(relative)
|
||
return min - this.paddingBottom > this.accommodHeight * -0.5
|
||
}
|
||
/** relative的左侧是否有也容纳空间 */
|
||
protected isAccommodateByLeft(relative: UITransform) {
|
||
var min = this.getItemXMin(relative)
|
||
return min - this.paddingLeft > this.accommodWidth * -0.5
|
||
}
|
||
/** relative的右侧是否有也容纳空间 */
|
||
protected isAccommodateByRight(relative: UITransform) {
|
||
var max = this.getItemXMax(relative)
|
||
return max + this.paddingRight < this.accommodWidth * 0.5
|
||
}
|
||
/** relative的左侧位置 */
|
||
protected getRelativeByLeft(item: UITransform, relative: UITransform): number {
|
||
var min = this.getItemXMin(relative)
|
||
return min - this.spacingX - this.getScaleWidth(item) * (1 - item.anchorX)
|
||
}
|
||
/** relative的右侧位置 */
|
||
protected getRelativeByRight(item: UITransform, relative: UITransform): number {
|
||
var max = this.getItemXMax(relative)
|
||
return max + this.spacingX + this.getScaleWidth(item) * item.anchorX
|
||
}
|
||
/** relative的顶部位置 */
|
||
protected getRelativeByTop(item: UITransform, relative: UITransform): number {
|
||
var max = this.getItemYMax(relative)
|
||
return max + this.spacingY + this.getScaleHeight(item) * item.anchorY
|
||
}
|
||
/** relative的底部位置 */
|
||
protected getRelativeByBottom(item: UITransform, relative: UITransform): number {
|
||
var min = this.getItemYMin(relative)
|
||
return min - this.spacingY - this.getScaleHeight(item) * (1 - item.anchorY)
|
||
}
|
||
/** 设置Item的坐标位置 */
|
||
protected setItemPosition(item: UITransform, relative: UITransform, reverse: boolean = false, isHeader: boolean = false) {
|
||
var pos = new Vec3()
|
||
if (isHeader) {
|
||
pos.x = this.getStartX(item)
|
||
pos.y = this.getStartY(item)
|
||
} else {
|
||
if (this.vertical) {
|
||
pos = this.getVerticalRelativePosition(item, relative, reverse)
|
||
} else {
|
||
pos = this.getHorizontalRelativePosition(item, relative, reverse)
|
||
}
|
||
}
|
||
item.node.setPosition(pos)
|
||
}
|
||
|
||
/** 计算垂直模式的Item应该的位置 */
|
||
protected getVerticalRelativePosition(item: UITransform, relative: UITransform, reverse: boolean) {
|
||
var pos = new Vec3()
|
||
var isAccommodate = false
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
isAccommodate = !reverse ? this.isAccommodateByRight(relative) : this.isAccommodateByLeft(relative)
|
||
} else {
|
||
isAccommodate = !reverse ? this.isAccommodateByLeft(relative) : this.isAccommodateByRight(relative)
|
||
}
|
||
// 横轴
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
if (!reverse) {
|
||
pos.x = isAccommodate ? this.getRelativeByRight(item, relative) : this.getStartX(item)
|
||
} else {
|
||
pos.x = isAccommodate ? this.getRelativeByLeft(item, relative) : this.getEndX(item)
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
pos.x = isAccommodate ? this.getRelativeByLeft(item, relative) : this.getStartX(item)
|
||
} else {
|
||
pos.x = isAccommodate ? this.getRelativeByRight(item, relative) : this.getEndX(item)
|
||
}
|
||
}
|
||
// 纵轴
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
if (!reverse) {
|
||
pos.y = isAccommodate ? relative.node.position.y : this.getRelativeByBottom(item, relative)
|
||
} else {
|
||
pos.y = isAccommodate ? relative.node.position.y : this.getRelativeByTop(item, relative)
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
pos.y = isAccommodate ? relative.node.position.y : this.getRelativeByTop(item, relative)
|
||
} else {
|
||
pos.y = isAccommodate ? relative.node.position.y : this.getRelativeByBottom(item, relative)
|
||
}
|
||
}
|
||
return pos
|
||
}
|
||
/** 计算水平模式的Item应该的位置 */
|
||
protected getHorizontalRelativePosition(item: UITransform, relative: UITransform, reverse: boolean) {
|
||
var pos = new Vec3()
|
||
var isAccommodate = false
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
isAccommodate = !reverse ? this.isAccommodateByBottom(relative) : this.isAccommodateByTop(relative)
|
||
} else {
|
||
isAccommodate = !reverse ? this.isAccommodateByTop(relative) : this.isAccommodateByBottom(relative)
|
||
}
|
||
// 纵轴
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
if (!reverse) {
|
||
pos.y = isAccommodate ? this.getRelativeByBottom(item, relative) : this.getStartY(item)
|
||
} else {
|
||
pos.y = isAccommodate ? this.getRelativeByTop(item, relative) : this.getEndY(item)
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
pos.y = isAccommodate ? this.getRelativeByTop(item, relative) : this.getStartY(item)
|
||
} else {
|
||
pos.y = isAccommodate ? this.getRelativeByBottom(item, relative) : this.getEndY(item)
|
||
}
|
||
}
|
||
// 横轴
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
if (!reverse) {
|
||
pos.x = isAccommodate ? relative.node.position.x : this.getRelativeByRight(item, relative)
|
||
} else {
|
||
pos.x = isAccommodate ? relative.node.position.x : this.getRelativeByLeft(item, relative)
|
||
}
|
||
} else {
|
||
if (!reverse) {
|
||
pos.x = isAccommodate ? relative.node.position.x : this.getRelativeByLeft(item, relative)
|
||
} else {
|
||
pos.x = isAccommodate ? relative.node.position.x : this.getRelativeByRight(item, relative)
|
||
}
|
||
}
|
||
return pos
|
||
}
|
||
/** 当数据长度发生变化时 计算item应该怎么排列 */
|
||
protected refreshItems(offset: number, refreshLastItem: boolean = false) {
|
||
if (offset < 0) {
|
||
var prev = this.header!
|
||
if (this.contentSize.height == this.view.height) {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const child = this.node.children[i]
|
||
this.setItemPosition(child._uiProps.uiTransformComp!, prev, false, i == 0)
|
||
prev = child._uiProps.uiTransformComp!
|
||
}
|
||
} else {
|
||
for (let i = 0; i < -offset; i++) {
|
||
if (this.headerLoop) {
|
||
this.pushToHeader()
|
||
} else if (this.footerLoop) {
|
||
this.pushToHeader()
|
||
} else {
|
||
if (this.vertical && this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM || this.horizontal && this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
this.pushToHeader(true)
|
||
this.pushToFooter()
|
||
} else {
|
||
this.pushToFooter(true)
|
||
this.pushToHeader()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
let startIndex = this.headerIndex > 0 ? this.headerIndex : 0
|
||
if (startIndex + this.node.children.length > this.itemTotal) {
|
||
startIndex += offset
|
||
}
|
||
if (startIndex < 0) startIndex = 0
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const child: any = this.node.children[i];
|
||
if (this.headerLoop || this.footerLoop) {
|
||
if (startIndex > this.itemTotal - 1) {
|
||
startIndex = 0
|
||
}
|
||
}
|
||
child["__index"] = startIndex
|
||
startIndex++
|
||
if (refreshLastItem) {
|
||
this.notifyRefreshItem(child)
|
||
}
|
||
}
|
||
this.scrollView.stopAutoScroll()
|
||
this.scrollView.startAutoScroll()
|
||
} else {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
this.pushToFooter()
|
||
} else {
|
||
this.pushToHeader()
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
this.pushToFooter()
|
||
} else {
|
||
this.pushToHeader()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
protected createItems(count: number, refreshLastItem: boolean = false) {
|
||
// 有多余的item 需要删除 不处理
|
||
if (this.node.children.length > count) {
|
||
this.removeItems(count)
|
||
return
|
||
}
|
||
if (!this.needAddPrefab()) {
|
||
// 已经固定item总数 不处理
|
||
if (this._maxPrefabTotal > 0 && this._maxPrefabTotal == this.node.children.length) {
|
||
return
|
||
}
|
||
}
|
||
let total = count - this.node.children.length //计算当前应该创建的总数
|
||
for (let i = 0; i < total; i++) {
|
||
let child: any = instantiate(this.prefab)
|
||
const transform = child._uiProps.uiTransformComp
|
||
this.setAndSaveSizeAndScale(transform)
|
||
child["__index"] = this.node.children.length
|
||
this.node.addChild(child)
|
||
var reverse = false
|
||
var index = this.node.children.length - 2
|
||
var relative
|
||
if (child["__index"] == 0) {
|
||
relative = this.footer!
|
||
} else {
|
||
relative = this.node.children[index]._uiProps.uiTransformComp!
|
||
}
|
||
child.on(Node.EventType.SIZE_CHANGED, () => { this.onChangeChildSize(transform) }, this, true)
|
||
child.on(Node.EventType.TRANSFORM_CHANGED, (type: any) => { this.onChangeChildScale(type, transform) }, this, true)
|
||
if (refreshLastItem) {
|
||
this.notifyRefreshItem(child)
|
||
}
|
||
this.setItemPosition(child._uiProps.uiTransformComp, relative, reverse, child["__index"] == 0)
|
||
|
||
if (!this.needAddPrefab()) {
|
||
this._maxPrefabTotal = this.node.children.length
|
||
console.log("已固定item数量", this._maxPrefabTotal)
|
||
break
|
||
}
|
||
}
|
||
}
|
||
protected needAddPrefab() {
|
||
const self = this.vertical ? this.contentSize.height : this.contentSize.width
|
||
if (self > 0) {
|
||
// 当尺寸改变时 重新计算prefab的数量
|
||
const view = this.vertical ? this.view.height : this.view.width
|
||
if (self < view * this.multiple) {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
protected async onChangeChildSize(item: UITransform) {
|
||
const node: any = item.node
|
||
if (this.groupItemTotal > 1) {
|
||
const __size = node["__size"]
|
||
item.setContentSize(__size)
|
||
console.warn("表格布局不支持动态修改 Size,如果你非要修改，那你把我注释掉看效果")
|
||
return
|
||
}
|
||
if (this.stretchLock.index == node["__index"]) {
|
||
this.scrollToIndex(this.stretchLock.index!, this.stretchLock.timeInSecond, this.stretchLock.boundary, this.stretchLock.reverse)
|
||
}
|
||
this.resetStrectchItems()
|
||
}
|
||
protected async onChangeChildScale(type: any, item: UITransform) {
|
||
if (type !== Node.TransformBit.SCALE) {
|
||
return
|
||
}
|
||
if (!this.affectedByScale) return
|
||
const node: any = item.node
|
||
if (this.groupItemTotal > 1) {
|
||
const __scale = node["__scale"]
|
||
item.node.setScale(__scale)
|
||
console.warn("表格布局不支持动态修改 Scale,如果你非要修改，那你把我注释掉看效果")
|
||
return
|
||
}
|
||
if (this.stretchLock.index == node["__index"]) {
|
||
this.scrollToIndex(this.stretchLock.index!, this.stretchLock.timeInSecond, this.stretchLock.boundary, this.stretchLock.reverse)
|
||
}
|
||
this.resetStrectchItems()
|
||
}
|
||
protected resetStrectchItems() {
|
||
if (!isNaN(this.stretchLock.index!)) {
|
||
const index = this.node.children.findIndex((item: any) => item["__index"] == this.stretchLock.index)
|
||
if (index != -1) {
|
||
for (let i = index; i >= 0; i--) {
|
||
const item = this.node.children[i];
|
||
if (i == index) continue
|
||
if (i < index) {
|
||
this.setItemPosition(item._uiProps.uiTransformComp!, this.node.children[i + 1]._uiProps.uiTransformComp!, true)
|
||
}
|
||
}
|
||
for (let i = index; i < this.node.children.length; i++) {
|
||
const item = this.node.children[i];
|
||
if (i == index) continue
|
||
this.setItemPosition(item._uiProps.uiTransformComp!, this.node.children[i - 1]._uiProps.uiTransformComp!)
|
||
}
|
||
return
|
||
}
|
||
}
|
||
if (this.scrollDirection == ScrollDirection.HEADER) {
|
||
this.unschedule(this.stretchToFooter)
|
||
this.scheduleOnce(this.stretchToFooter)
|
||
} else {
|
||
this.unschedule(this.stretchToHeader)
|
||
this.scheduleOnce(this.stretchToHeader)
|
||
}
|
||
}
|
||
private stretchToHeader() {
|
||
for (let i = this.node.children.length - 1; i >= 0; i--) {
|
||
const item = this.node.children[i];
|
||
if (i == this.node.children.length - 1) continue
|
||
this.setItemPosition(item._uiProps.uiTransformComp!, this.node.children[i + 1]._uiProps.uiTransformComp!, true)
|
||
}
|
||
}
|
||
private stretchToFooter() {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
const item = this.node.children[i];
|
||
if (i == 0) continue
|
||
this.setItemPosition(item._uiProps.uiTransformComp!, this.node.children[i - 1]._uiProps.uiTransformComp!)
|
||
}
|
||
}
|
||
|
||
/** 删除多余的item */
|
||
protected removeItems(count: number) {
|
||
// 有多余的item 需要删除
|
||
let length = this.node.children.length - count
|
||
// 删除掉多余的item
|
||
for (let i = 0; i < length; i++) {
|
||
var child = this.node.children[this.node.children.length - 1]
|
||
child.off(Node.EventType.SIZE_CHANGED)
|
||
child.off(Node.EventType.TRANSFORM_CHANGED)
|
||
this.node.removeChild(child)
|
||
child.destroy()
|
||
}
|
||
}
|
||
protected addEventListener() {
|
||
this.node.on(SystemEventType.TRANSFORM_CHANGED, this.onPositionChanged, this)
|
||
}
|
||
protected removeEventListener() {
|
||
this.node.off(SystemEventType.TRANSFORM_CHANGED, this.onPositionChanged, this)
|
||
}
|
||
/** 重新计算当前所有Item的位置 */
|
||
protected resetChilds(start: boolean = false) {
|
||
if (this.vertical && this.fixedItemHeight <= this.view.height || !this.vertical && this.fixedItemWidth <= this.view.width) {
|
||
let x = this.getStartX(this.header)
|
||
let y = this.getStartY(this.header)
|
||
this.header?.node.setPosition(new Vec3(x, y))
|
||
}
|
||
if (start) {
|
||
if (this.vertical) {
|
||
let x = this.getStartX(this.header)
|
||
this.header?.node.setPosition(new Vec3(x, this.header.node.position.y))
|
||
} else {
|
||
let y = this.getStartY(this.header)
|
||
this.header?.node.setPosition(new Vec3(this.header.node.position.x, y))
|
||
}
|
||
}
|
||
this.stretchToFooter()
|
||
if (!start) {
|
||
this.scrollView.startAutoScroll()
|
||
}
|
||
}
|
||
protected onTouchBegin() {
|
||
this.stretchLock = {}
|
||
}
|
||
protected getUsedScaleValue(value: number) {
|
||
return this.affectedByScale ? Math.abs(value) : 1;
|
||
}
|
||
protected getScaleWidth(trans: UITransform | null): number {
|
||
if (!trans) return 0
|
||
const size = (trans.node as any)["__runtime_size"]
|
||
const width = size ? size.width : trans.width
|
||
return width * this.getUsedScaleValue(trans.node.scale.x)
|
||
}
|
||
protected getScaleHeight(trans: UITransform | null): number {
|
||
if (!trans) return 0
|
||
const size = (trans.node as any)["__runtime_size"]
|
||
const height = size ? size.height : trans.height
|
||
return height * this.getUsedScaleValue(trans.node.scale.y)
|
||
}
|
||
protected onPositionChanged() {
|
||
if (this.isRestart) return
|
||
if (this.vertical) {
|
||
if (this.scrollView.prevLocation.y < this.scrollView.location.y) {
|
||
this.scrollDirection = ScrollDirection.FOOTER
|
||
} else if (this.scrollView.prevLocation.y > this.scrollView.location.y) {
|
||
this.scrollDirection = ScrollDirection.HEADER
|
||
} else {
|
||
this.scrollDirection = ScrollDirection.NONE
|
||
}
|
||
} else {
|
||
if (this.scrollView.prevLocation.x > this.scrollView.location.x) {
|
||
this.scrollDirection = ScrollDirection.FOOTER
|
||
} else if (this.scrollView.prevLocation.x < this.scrollView.location.x) {
|
||
this.scrollDirection = ScrollDirection.HEADER
|
||
} else {
|
||
this.scrollDirection = ScrollDirection.NONE
|
||
}
|
||
}
|
||
|
||
if (this.vertical) {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
let isOfBoundary = Math.abs(this.prevPos.y - this.node.position.y) > EPSILON
|
||
if (!isOfBoundary) continue
|
||
if (this.prevPos.y < this.node.position.y) {
|
||
this.pushToFooter()
|
||
} else if (this.prevPos.y > this.node.position.y) {
|
||
this.pushToHeader()
|
||
}
|
||
}
|
||
} else {
|
||
for (let i = 0; i < this.node.children.length; i++) {
|
||
let isOfBoundary = Math.abs(this.prevPos.x - this.node.position.x) > EPSILON
|
||
if (!isOfBoundary) continue
|
||
if (this.prevPos.x > this.node.position.x) {
|
||
this.pushToFooter()
|
||
} else if (this.prevPos.x < this.node.position.x) {
|
||
this.pushToHeader()
|
||
}
|
||
}
|
||
}
|
||
|
||
this.prevPos = this.node.position.clone()
|
||
}
|
||
/** 向尾部填充 force如果为true 则强制填充 */
|
||
protected pushToFooter(force: boolean = false) {
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
if (force || this.headerBoundary - this.paddingTop > this.viewHeaderBoundary + this.header?.height!) {
|
||
this.pushToFooterHandler()
|
||
}
|
||
} else {
|
||
if (force || this.footerBoundary - this.paddingTop > this.viewHeaderBoundary + this.header?.height!) {
|
||
this.pushToHeaderHandler()
|
||
}
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
if (force || this.headerBoundary + this.paddingLeft < this.viewHeaderBoundary - this.header?.width!) {
|
||
this.pushToFooterHandler()
|
||
}
|
||
} else {
|
||
if (force || this.footerBoundary + this.paddingLeft < this.viewHeaderBoundary - this.header?.width!) {
|
||
this.pushToHeaderHandler()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
/** 向头部填充 force如果为true 则强制填充 */
|
||
protected pushToHeader(force: boolean = false) {
|
||
if (this.vertical) {
|
||
if (this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM) {
|
||
if (force || this.footerBoundary + this.paddingBottom < this.viewFooterBoundary - this.footer?.height!) {
|
||
this.pushToHeaderHandler()
|
||
}
|
||
} else {
|
||
if (force || this.headerBoundary + this.paddingBottom < this.viewFooterBoundary - this.footer?.height!) {
|
||
this.pushToFooterHandler()
|
||
}
|
||
}
|
||
} else {
|
||
if (this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT) {
|
||
if (force || this.footerBoundary - this.paddingRight > this.viewFooterBoundary + this.footer?.width!) {
|
||
this.pushToHeaderHandler()
|
||
}
|
||
} else {
|
||
if (force || this.headerBoundary - this.paddingRight > this.viewFooterBoundary + this.footer?.width!) {
|
||
this.pushToFooterHandler()
|
||
}
|
||
}
|
||
}
|
||
}
|
||
protected pushToFooterHandler() {
|
||
var node: any = this.header?.node
|
||
let loop
|
||
if (this.vertical) {
|
||
loop = this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM ? this.footerLoop : this.headerLoop
|
||
} else {
|
||
loop = this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT ? this.footerLoop : this.headerLoop
|
||
}
|
||
if (loop) {
|
||
if (this.footerIndex >= this.itemTotal - 1) {
|
||
node["__index"] = 0
|
||
} else {
|
||
node["__index"] = this.footerIndex + 1
|
||
}
|
||
} else {
|
||
if (!this.footer || this.footerIndex >= this.itemTotal - 1) return
|
||
node["__index"] = this.footerIndex + 1
|
||
}
|
||
if (node["__index"] >= 0 && node["__index"] < this.currentCreateItemTotal) {
|
||
this.notifyRefreshItem(node)
|
||
}
|
||
this.setItemPosition(this.header!, this.footer!)
|
||
this.header?.node.setSiblingIndex(this.node.children.length)
|
||
}
|
||
protected pushToHeaderHandler() {
|
||
var node: any = this.footer?.node
|
||
let loop
|
||
if (this.vertical) {
|
||
loop = this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM ? this.headerLoop : this.footerLoop
|
||
} else {
|
||
loop = this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT ? this.headerLoop : this.footerLoop
|
||
}
|
||
// 对其头部
|
||
if (!loop && this.headerIndex == 0) {
|
||
// 判断是否是起始位置
|
||
var accommodate
|
||
if (this.vertical) {
|
||
accommodate = this.horizontalAxisDirection == HorizontalAxisDirection.LEFT_TO_RIGHT ? this.isAccommodateByLeft(this.header!) : this.isAccommodateByRight(this.header!)
|
||
} else {
|
||
accommodate = this.verticalAxisDirection == VerticalAxisDirection.TOP_TO_BOTTOM ? this.isAccommodateByTop(this.header!) : this.isAccommodateByBottom(this.header!)
|
||
}
|
||
if (accommodate) {
|
||
this.resetChilds(true)
|
||
}
|
||
}
|
||
if (loop) {
|
||
if (this.headerIndex == 0) {
|
||
node["__index"] = this.itemTotal - 1
|
||
} else {
|
||
node["__index"] = this.headerIndex - 1
|
||
}
|
||
} else {
|
||
if (!this.header || this.headerIndex == 0) return
|
||
node["__index"] = this.headerIndex - 1
|
||
}
|
||
if (node["__index"] >= 0 && node["__index"] < this.currentCreateItemTotal) {
|
||
this.notifyRefreshItem(node)
|
||
}
|
||
this.setItemPosition(this.footer!, this.header!, true)
|
||
this.footer?.node.setSiblingIndex(0)
|
||
}
|
||
/** 通知给定的node刷新数据 */
|
||
protected notifyRefreshItem(target: Node) {
|
||
EventHandler.emitEvents(this.refreshItemEvents, target, (target as any)['__index'])
|
||
}
|
||
} |