文章内容
1623902333
Angular2使用SVG自定义图表（条形图、折线图）组件示例
本文实例讲述了Angular2使用SVG自定义图表（条形图、折线图）组件。分享给大家供大家参考，具体如下：
要求：用户将数据作为参数传进来，通过类型决定渲染何种类型的图标。
demo：
html:
1 | <ngo-chart [inputParams]="options"></ngo-chart> |
ts:
1 2 3 4 5 6 7 8 9 10 11 12 | options = { type: 'line', //图表类型 xAxis: { //X轴的数据 data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'] }, yAxis: { //X轴的数据 data: [120, 220, 150, 111, -150, 55, 60], }, width: 600, //宽 height: 500, //高 dataPadding: 8 //条形图之间的距离 }; |
效果：
源代码：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | import { Input, OnInit, ViewChild, Component, ViewEncapsulation, ElementRef, AfterViewInit, ChangeDetectorRef,} from '@angular/core';import { NgoChartSvgParams, Scale, Axis, Chart } from './chart-svg-params';@Component({ selector: 'ngo-chart-svg', templateUrl: './chart-svg.html', styleUrls: ['./chart-svg.scss'], encapsulation: ViewEncapsulation.Native})export class NgoChartSvg implements OnInit, AfterViewInit { @Input() inputParams: NgoChartSvgParams; @ViewChild('svg') svg: ElementRef; @ViewChild('polyline') polyline: ElementRef; params: NgoChartSvgParams; AxisY: Axis; // Y轴 AxisX: Axis; // X轴 valueToPxRatio: number; // 值转px的比率 Y0: number; // 坐标轴 (0,0)的Y轴 Yscale: Array<Scale> = []; // Y轴刻度值 Xscale: Array<Scale> = []; // X轴刻度值 XgapWidth: number; // X轴刻度之间的间隙宽度 data: Array<Chart> = []; color: string; type: string; polyLinePoints: string; polyLineLength: number; constructor( private ele: ElementRef, private cd: ChangeDetectorRef ) { } ... ngOnInit() { this.initParams(); const svg = this.svg.nativeElement; const _width = this.params.width; const _height = this.params.height; svg.setAttribute('width', _width); svg.setAttribute('height', _height); // 绘制 y轴 this.drawAxisY(); this.drawScaleY(); // 绘制 x轴 this.drawAxisX(); this.drawScaleX(); this.drawRect(); if (this.params.type === 'line') { this.drawLine(); } } ngAfterViewInit() { if (this.polyline) { this.polyLineLength = this.polyline.nativeElement.getTotalLength(); this.cd.detectChanges(); } }} |
html
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | <svg #svg> <!-- Y轴 --> <g> <line [attr.x1]="AxisY.x1" [attr.y1]="AxisY.y1+15" [attr.x2]="AxisY.x2" [attr.y2]="AxisY.y2" [attr.stroke]="color" [attr.fill]="color" style="stroke-width:3" /> <polygon [attr.points]="AxisY.arrow" /> <ng-container *ngFor="let scale of Yscale"> <line
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