我正在处理一个问题,我需要获取元素容器的宽度和高度才能在内部正确呈现 svg。问题是 OffsetWidth 和 Height 总是 0,我不知道我错过了什么。
父组件:
<div nz-row [nzGutter]="16">
<div nz-col nzSpan="24">
<nz-card nzHoverable>
<nz-range-picker [ngModel]="initialRange" (ngModelChange)="onChange($event)" nzShowTime nzFormat="MM/dd/yyyy HH:mm:ss"></nz-range-picker>
<bar-chart [data]="data"></bar-chart>
</nz-card>
</div>
</div>
条形图组件:
<div #chart class="chart-container"></div>
条形图css:
.chart-container {
display: block;
position: relative;
width: 100%;
height: 100%;
max-width: 100%;
overflow: hidden;
}
.chart-svg {
display: block;
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 500px;
}
条形图打字稿:
@Component({
selector: 'bar-chart',
templateUrl: './bar-chart.component.html',
encapsulation: ViewEncapsulation.None,
styleUrls: ['./bar-chart.component.scss']
})
export class BarChartComponent extends BaseChart implements OnInit {
@ViewChild('chart')
private chartContainer: ElementRef;
@Input()
public data: DataModel[];
public margin = { top: 20, right: 20, bottom: 30, left: 40 };
constructor() {
super();
}
public ngOnInit() {
if (!this.data) {
return;
}
this.draw();
}
private draw(): void {
d3.select('svg').remove();
const element = this.chartContainer.nativeElement;
const data = this.data;
const svg = d3.select(element).append('svg')
.attr('class', 'chart-svg')
.attr('width', element.offsetWidth)
.attr('height', element.offsetHeight);
const contentWidth = element.offsetWidth - this.margin.left - this.margin.right;
const contentHeight = element.offsetHeight - this.margin.top - this.margin.bottom;
}
}
我正在使用 ng-zorro-antd 进行 angular 7 的 UI 设计。