jqwidgets-framework/demos/Angular/src/chart/customdrawing/app.component.ts

jQWidgets is an advanced Angular, Vue, Blazor, React, Web Components, jquery, ASP .NET MVC, Custom Elements and HTML5 UI framework.

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
})

export class AppComponent {
    source: any =
    {
        datatype: 'json',
        datafields: [
            { name: 'id' },
            { name: 'path' },
            { name: 'europe' },
            { name: 'eu' }
        ],
        /* EU map definitions in JSON derived from  http://commons.wikimedia.org/wiki/File:116_000_map_of_Europe.svg */
        url: './../../../sampledata/europe.txt'
    };

    dataAdapter: any = new jqx.dataAdapter(this.source, { async: false, autoBind: true, loadError: (xhr: any, status: any, error: any) => { alert('Error loading "' + this.source.url + '" : ' + error); } });

	getWidth() : any {
		if (document.body.offsetWidth < 850) {
			return '90%';
		}
		
		return 850;
	}
	
    padding: any = { left: 10, top: 5, right: 10, bottom: 5 };

    titlePadding: any = { left: 90, top: 0, right: 0, bottom: 10 };

    drawBefore = (renderer: any, rect: any): void => {
        renderer.rect(rect.x, rect.y, rect.width, rect.height, { fill: 'lightblue' });
    };

    transformPath(path: any, wScale: any, hScale: any, xOffset: any, yOffset: any): any {
        let output = '';
        for (let i = 0; i < path.length; i++) {
            if (path[i] == 'C' || path[i] == 'M' || path[i] == 'L') {
                output += path[i];
                i++;

                let j = i;
                while (j + 1 < path.length && !(path[j + 1] == 'C' || path[j + 1] == 'M' || path[j + 1] == 'L' || path[j + 1] == 'z'))
                    j++;
                let value = path.substring(i, j);
                let pointsString = value.split(' ');
                for (let s = 0; s < pointsString.length; s++) {
                    if (pointsString[s].length == 0)
                        continue;
                    let pointString = pointsString[s].split(',');
                    let point = { x: pointString[0], y: pointString[1] };
                    point.x = point.x * wScale + xOffset;
                    point.y = point.y * hScale + yOffset;
                    output += ' ' + point.x + ',' + point.y + ' ';
                }
                i = j - 1;
            }
            else {
                output += path[i];
            }
        }
        return output;
    }

    draw = (renderer: any, rect: any): void => {
        let records = this.dataAdapter.records;
        let wScale = rect.width / 13000
        let hScale = (rect.height) / 8500;

        for (let i = 0; i < records.length; i++) {
            let path = this.transformPath(records[i].path, wScale, hScale, 62, 22);
            let pathElement = renderer.path(path, { stroke: 'black' });
            if (records[i].eu == 'true') {
                renderer.attr(pathElement, { fill: 'blue' });
            }
            else
                renderer.attr(pathElement, { fill: '#DEDEDE' });
        }
    };
}