/* * ********************************************************************************************************************* * * !! * .F88X * X8888Y * .}888888N; * i888888N; .:! .I$WI: * R888888I .'N88~ i8}+8Y&8"l8i$8>8W~'>W8}8]KW+8IIN"8& * .R888888I .;N8888~ .X8' "8I.!,/8" !%NY8`"8I8~~8>,88I * +888888N; .8888888Y "&&8Y.}8, * ./888888N; .R888888Y .'}~ .>}'.`+> i}! "i' +/' .'i~ !11,.:">, .~]! .i}i * ~888888%: .I888888l .]88~`1/iY88Ii+1'.R$8$8]"888888888> Y8$ W8E X8E W8888'188Il}Y88$* * 18888888 E8888881 .]W%8$`R8X'&8%++N8i,8N%N8+l8%` .}8N:.R$RE%N88N%N$K$R 188,FE$8%~Y88I * .E888888I .i8888888' .:$8I;88+`E8R:/8N,.>881.`$8E/1/]N8X.Y8N`"KF&&FK!'88*."88K./$88%RN888+~ * 8888888I .,N888888~ ~88i"8W,!N8*.I88.}888%F,i$88"F88" 888:E8X.>88!i88>`888*.}Fl1]*}1YKi' * i888888N' I888Y ]88;/EX*IFKFK88X K8R .l8W 88Y ~88}'88E&%8W.X8N``]88!.$8K .:W8I * .i888888N; I8Y .&8$ .X88! i881.:%888>I88 ;88] +88+.';;;;:.Y88X 18N.,88l .+88/ * .:R888888I * .&888888I Copyright (c) 2009-2020. 博锐尚格科技股份有限公司 * ~8888' * .!88~ All rights reserved. * * ********************************************************************************************************************* */ import { SObjectItem } from "./SObjectItem"; import { SPainter, SRect, SSize, SColor, SPoint } from "@persagy-web/draw"; import { SImageShowType, STextOrigin } from ".."; import { SGraphItem } from "../SGraphItem"; /** * 图片 item * * @author 张宇 */ export class SImageItem extends SObjectItem { /** 图片 dom */ img: CanvasImageSource | undefined; /** 展示模式 */ private _showType: SImageShowType = SImageShowType.Full; get showType(): SImageShowType { return this._showType; } // Get showType set showType(v: SImageShowType) { this._showType = v; this.computeImgSize(); this.update(); } // Set showType /** 边框色 */ private _strokeColor: SColor = SColor.Transparent; get strokeColor(): SColor { return this._strokeColor; } // Get strokeColor set strokeColor(v: SColor) { this._strokeColor = v; this.update(); } // Set strokeColor /** 边框宽度 */ private _lineWidth: number = 1; get lineWidth(): number { return this._lineWidth; } // Get lineWidth set lineWidth(v: number) { this._lineWidth = v; this.update(); } // Set lineWidth /** 原点位置 */ private _originPosition: STextOrigin = STextOrigin.LeftTop; get originPosition(): STextOrigin { return this._originPosition; } // Get originPosition set originPosition(v: STextOrigin) { this._originPosition = v; this.update(); } // Set originPosition /** 图片加载是否完成 */ isLoadOver: boolean = false; /** 图片的宽度 */ private imgWidth: number = this.width; /** 图片的高度 */ private imgHeight: number = this.height; /** 图片地址 */ private _url: string = ""; get url(): string { return this._url; } // Get url set url(v: string) { this._url = v; this.img = new Image(); this.img.onload = (e): void => { // @ts-ignore const imgSrc = e.path[0].src; if (this.isUrlIdentical(imgSrc)) { this.isLoadOver = true; this.computeImgSize(); this.$emit("imgLoadOver"); this.update(); } }; this.img.onerror = (e): void => { // @ts-ignore const imgSrc = e.path[0].src; if (this.isUrlIdentical(imgSrc)) { this.isLoadOver = false; this.$emit("imgLoadOver"); this.update(); console.log("加载图片错误!", e); } }; this.img.src = v; } // Set url /** * 构造函数 * * @param parent 指向父 Item * @param url 图片地址 */ constructor(parent: SGraphItem | null, url?: string) { super(parent); if (url) this.url = url; } // Constructor /** * 根据显示模式计算图片的宽高 */ computeImgSize(): void { if (this.isLoadOver) { // 要绘制图片的宽度 let width = 0; // 要绘制图片的宽度 let height = 0; // 图片 item 的宽高比 let itemAspectRatio: number = this.width / this.height; // 原始图片的宽高比 let imgAspectRatio: number = // @ts-ignore (this.img.width as number) / (this.img.height as number); // 原始图片的高宽比 let imgHwRatio: number = // @ts-ignore (this.img.height as number) / (this.img.width as number); if (this.showType == SImageShowType.Full) { width = this.width; height = this.height; } else if (this.showType == SImageShowType.Equivalency) { if (itemAspectRatio > imgAspectRatio) { height = this.height; width = imgAspectRatio * height; } else if (itemAspectRatio < imgAspectRatio) { width = this.width; height = width * imgHwRatio; } else { width = this.width; height = this.height; } } else if (this.showType == SImageShowType.AutoFit) { // @ts-ignore this.width = this.img.width as number; // @ts-ignore this.height = this.img.height as number; width = this.width; height = this.height; } this.imgWidth = width; this.imgHeight = height; // 设置原点位置(默认左上角) if (this.originPosition == STextOrigin.Center) { this.origin = new SPoint(this.width / 2, this.height / 2); } } } // Function computeImgSize() /** * 判断当前地址和回调地址是否相同 * * @param imgUrl 图片回调地址 * @return 当前地址和回调地址是否相同 */ private isUrlIdentical(imgUrl: string): boolean { if (this.url.indexOf("://") == -1) { // eslint-disable-next-line max-len const reg = /^\s*data:([a-z]+\/[a-z0-9-+.]+(;[a-z-]+=[a-z0-9-]+)?)?(;base64)?,([a-z0-9!$&',()*+;=\-._~:@\/?%\s]*?)\s*$/i; if (reg.test(this.url)) { return this.url == imgUrl; } else { return this.url == this.GetUrlRelativePath(imgUrl); } } else { return this.url == imgUrl; } } // Function isUrlIdentical() /** * 截取绝对路径中的相对路径 * * @param url 绝对路径 * @return 截取出的绝对路径中的相对路径 */ private GetUrlRelativePath(url: string): string { const arrUrl = url.split("//"); const start = arrUrl[1].indexOf("/"); const relUrl = arrUrl[1].substring(start); return relUrl; } // Function GetUrlRelativePath() /** * Item 对象边界区域 * * @return 边界区域 */ boundingRect(): SRect { return new SRect( -this.origin.x, -this.origin.y, this.width, this.height ); } // Function boundingRect() /** * 宽高发发生变化 * * @param oldSize 改之前的大小 * @param newSize 改之后大小 */ protected onResize(oldSize: SSize, newSize: SSize): void { this.computeImgSize(); this.update(); } // Function onResize() /** * Item 绘制操作 * * @param painter 绘制对象 */ onDraw(painter: SPainter): void { painter.translate(-this.origin.x, -this.origin.y); if (this.isLoadOver) { // @ts-ignore painter.drawImage(this.img, 0, 0, this.imgWidth, this.imgHeight); } if (this.selected) { painter.shadow.shadowBlur = 10; painter.shadow.shadowColor = new SColor(`#00000033`); painter.shadow.shadowOffsetX = 5; painter.shadow.shadowOffsetY = 5; } else { painter.shadow.shadowColor = SColor.Transparent; } painter.pen.lineWidth = this.lineWidth; painter.pen.color = this.strokeColor; painter.brush.color = SColor.Transparent; painter.drawRect(0, 0, this.width, this.height); } // Function onDraw() } // Class SImageItem