saga-topo/src/items/RelationItem.ts

/*
 * ********************************************************************************************************************
 *
 *                      :*$@@%$*:                         ;:                ;;    ;;
 *                    :@@%!  :!@@%:                       %!             ;%%@@%$ =@@@@@@@%;     @%@@@%%%%@@@@@
 *                   :@%;       :$=                       %%$$$%$$         ;$$  ;$@=   !@$
 *                   =@!                                  %!              @ $=;%   !@@@%:      !$$$$$$$$$$$$$$=
 *                   =@*                                  %!              @ $= % %@=   =%@!      %=
 *              *$%%! @@=        ;=$%%%$*:                %!              @ $= % =%%%%%%@$      *%:         =%
 *            %@@!:    !@@@%=$@@@@%!  :*@@$:              %!              @ $= % $*     ;@      @*          :%*
 *          ;@@!          ;!!!;:         ;@%:      =======@%========*     @ $$ % $%*****$@     :@$=*********=@$
 *          $@*   ;@@@%=!:                *@*
 *          =@$    ;;;!=%@@@@=!           =@!
 *           %@$:      =@%: :*@@@*       %@=                    Copyright (c) 2016-2020.  北京上格云技术有限公司
 *            ;%@@$=$@@%*       *@@@$=%@@%;
 *               ::;::             ::;::                                              All rights reserved.
 *
 * ********************************************************************************************************************
 */

import { SGraphyItem } from "@saga-web/graphy/lib";
import { SPainter, SPoint, SRect } from "@saga-web/draw/lib";
import { Relation } from "../types/Relation";
import { SMouseEvent } from "@saga-web/base/lib";

/**
 * 关系item
 *
 * @author  郝建龙
 */
export class RelationItem extends SGraphyItem {
    /** 关系数据    */
    data: Relation | null = null;
    /** 折点信息    */
    pointList: SPoint[] = [];
    /** X坐标最小值  */
    private minX = Number.MAX_SAFE_INTEGER;
    /** X坐标最大值  */
    private maxX = Number.MIN_SAFE_INTEGER;
    /** Y坐标最小值  */
    private minY = Number.MAX_SAFE_INTEGER;
    /** Y坐标最大值  */
    private maxY = Number.MIN_SAFE_INTEGER;

    constructor(parent: SGraphyItem | null, data: Relation) {
        super(parent);
        this.data = data;
        this.pointList = data.pointList;
        data.pointList.forEach(it => {
            let x = it.x,
                y = it.y;
            if (x < this.minX) {
                this.minX = x;
            }
            if (y < this.minY) {
                this.minY = y;
            }
            if (x > this.maxX) {
                this.maxX = x;
            }
            if (y > this.maxY) {
                this.maxY = y;
            }
        });
    } // Constructor

    /**
     * Item对象边界区域
     *
     * @return SRect
     */
    boundingRect(): SRect {
        return new SRect(
            this.minX,
            this.minY,
            this.maxX - this.minX,
            this.maxY - this.minY
        );
    } // Function boundingRect()

    /**
     *  点击事件
     *
     */
    onClick(event: SMouseEvent): boolean {
        if (this.selectable) {
            this.selected = !this.selected;
        }
        this.$emit("click", event);
        return true;
    } // Function onClick

    /**
     * Item绘制操作
     *
     * @param   painter       painter对象
     */
    onDraw(painter: SPainter): void {
        painter.pen.lineWidth = 50;
        painter.drawPolyline(this.pointList);
    } // Function onDraw()
} // Class RelationItem