# 矩形&圆角矩形

目录

# item 实例

查看源代码:/persagy-web-graph/src/items/SGraphRectItem.ts

    
圆角半径 :

示例中展示了 一种渐变风格的 json 传参

"Default":{
    "Stroke": "#cccccc",
    "Fill": "SLinearGradient{0,0;0,1000;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
    "LineWidth": 2,
    "Effect": {}
},
"Selected": {
    "Stroke": "#66ff66",
    "Fill": "SRadialGradient{500,500,50;500,500,500;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
    "LineWidth": 3,
    "Effect": {}
},
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一种普通纯色风格的 json 传参

"Default":{
    "Stroke": "#cccccc",
    "Fill": "SLinearGradient{0,0;0,1000;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
    "LineWidth": 2,
    "Effect": {}
},
"Selected": {
    "Stroke": "#66ff66",
    "Fill": "SRadialGradient{500,500,50;500,500,500;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
    "LineWidth": 3,
    "Effect": {}
},
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查看代码使用
<template>
    <div style="margin-top: 10px;">
        <el-button size="small" @click="changeEnable">切换item1禁用状态</el-button>
        圆角半径 : <el-input-number @change="changeY" v-model="R" size="mini" style="width: 100px"></el-input-number>
        <canvas :id="id" width="740" height="400" />
    </div>
</template>

<script lang="ts">

    import {SGraphRectItem, SGraphScene, SGraphView} from "@persagy-web/graph/lib";
    import { Component, Vue } from "vue-property-decorator";

    @Component
    export default class RectCanvas extends Vue {
        id: string = 'rect' + Date.now();
        view: SGraphView | undefined;
        item: SGraphRectItem | undefined;
        item2: SGraphRectItem | undefined;
        R: number = 0;
        rectData = {
            X: 0,
            Y: 0,
            Width: 500,
            Height: 500,
            Radius: 0,
            Style: {
                "Default":{
                    "Stroke": "#cccccc",
                    "Fill": "SLinearGradient{0,0;0,1000;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
                    "LineWidth": 2,
                    "Effect": {}
                },
                "Selected": {
                    "Stroke": "#66ff66",
                    "Fill": "SRadialGradient{500,500,50;500,500,500;0,#ff483bff;0.5,#04ff00ff;1,#3d4effff;}",
                    "LineWidth": 3,
                    "Effect": {}
                },
                "Disabled": {
                    "Stroke": "#333333",
                    "Fill": "#afafaf",
                    "LineWidth": 1,
                    "Effect": {}
                },
            }
        };
        rectData2 = {
            X: 1000,
            Y: 0,
            Width: 500,
            Height: 500,
            Radius: 0,
            Style: {
                "Default":{
                    "Stroke": "#cccccc",
                    "Fill": "#ffccee",
                    "LineWidth": 2,
                    "Effect": {}
                },
                "Selected": {
                    "Stroke": "#66ff66",
                    "Fill": "#ff33ee",
                    "LineWidth": 3,
                    "Effect": {}
                },
                "Disabled": {
                    "Stroke": "#333333",
                    "Fill": "#afafaf",
                    "LineWidth": 1,
                    "Effect": {}
                },
            }
        };
        private mounted (): void {
            console.log(9999999999999)
            this.init();
        }
        init(): void {
            this.view = new SGraphView(this.id);
            const scene = new SGraphScene();
            this.item = new SGraphRectItem(null, this.rectData);
            this.item.selectable = true;
            scene.addItem(this.item);

            this.item2 = new SGraphRectItem(null, this.rectData2);
            this.item2.selectable = true;
            scene.addItem(this.item2);

            this.view.scene = scene;
            this.view.fitSceneToView();
            this.view.scalable = false;
        }
        changeEnable(): void{
            if (this.item) {
                this.item.enabled = !this.item.enabled;
            }
        }
        // 修改圆角半径
        changeY(val: number): void {
            if (this.item){
                this.item.radius = val;
            }
            if(this.item2) {
                this.item2.radius = val;
            }
        }
    }
</script>

<style scoped>
</style>
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# item 传参注意

item 传入的圆角的半径默认是 0,即不绘制圆角; 如果传入的值是数字类型且不为0则绘制圆角;
item 传入的数据 data 大写跟随数据字典;
保存item的时候,保存类型为 String ,调用渐变类的value()方法即可返回当前渐变类的字符串;
item 状态切换及 Style 内容详情参考 建筑信息图-底图风格

Last Updated: 9/1/2020, 5:59:08 PM