ngx-chart
Version:
Ngx-Chart provides chart solution for Angular.Currently supports Bar, Pie and Donut chart
118 lines • 15.3 kB
JavaScript
import { __decorate } from "tslib";
import { Component, EventEmitter, Input, Output, ViewChildren } from '@angular/core';
var PieChartComponent = /** @class */ (function () {
function PieChartComponent() {
this.selectedItem = new EventEmitter();
this.chartOptions = {
showLegend: true,
legendTitle: 'Total',
};
this.view = {
height: 200,
width: 200,
radius: 80
};
this.chartView = [];
this.totalSum = 0;
this.processedData = [];
this.legendData = [];
}
PieChartComponent.prototype.ngOnInit = function () {
var _this = this;
this.chartView.push(this.view.height + 'px');
this.chartView.push(this.view.width + 'px');
if (this.chartData) {
// Get total number of records
this.totalSum = this.chartData.reduce(function (a, b) {
return a + b.value;
}, 0);
//generate Data for piechart
var prevAngle_1 = 0;
this.chartData.map(function (x, index) {
var legend = {
name: x.name,
value: x.value,
color: x.color
};
_this.legendData.push(legend);
var percentage = _this.getPercentage(x.value, _this.totalSum);
if (percentage > 0) {
var circlePercentage = percentage / 10 * 36;
var pieData = {
color: x.color,
a1: prevAngle_1,
a2: prevAngle_1 + circlePercentage,
name: x.name
};
prevAngle_1 = prevAngle_1 + circlePercentage;
_this.processedData.push(pieData);
}
});
}
};
PieChartComponent.prototype.ngAfterViewInit = function () {
var _this = this;
// create svg
if (this.processedData.length > 0) {
this.span.map(function (item, index) {
_this.processedData[index].a2 = _this.processedData[index].a2 >= 360 ? 359.9 : _this.processedData[index].a2;
item.nativeElement.setAttribute('d', _this.describeArc(_this.view.height / 2, _this.view.height / 2, _this.view.radius, _this.processedData[index].a1, _this.processedData[index].a2));
item.nativeElement.setAttribute('fill', _this.processedData[index].color);
});
}
};
PieChartComponent.prototype.polarToCartesian = function (centerX, centerY, radius, angleInDegrees) {
var angleInRadians = (angleInDegrees - 90) * Math.PI / 180.0;
return {
x: centerX + (radius * Math.cos(angleInRadians)),
y: centerY + (radius * Math.sin(angleInRadians))
};
};
PieChartComponent.prototype.describeArc = function (x, y, radius, startAngle, endAngle) {
var start = this.polarToCartesian(x, y, radius, endAngle);
var end = this.polarToCartesian(x, y, radius, startAngle);
var arcSweep = endAngle - startAngle <= 180 ? "0" : "1";
var d = [
"M", start.x, start.y,
"A", radius, radius, 0, arcSweep, 0, end.x, end.y,
"L", x, y,
"L", start.x, start.y
].join(" ");
return d;
};
PieChartComponent.prototype.getPercentage = function (partialValue, totalValue) {
return (100 * partialValue) / totalValue;
};
PieChartComponent.prototype.getItemClicked = function (item) {
var selected = {
name: item.name,
value: item.value
};
this.selectedItem.emit(selected);
};
__decorate([
Input()
], PieChartComponent.prototype, "chartData", void 0);
__decorate([
ViewChildren('el')
], PieChartComponent.prototype, "span", void 0);
__decorate([
Output()
], PieChartComponent.prototype, "selectedItem", void 0);
__decorate([
Input()
], PieChartComponent.prototype, "chartOptions", void 0);
__decorate([
Input()
], PieChartComponent.prototype, "view", void 0);
PieChartComponent = __decorate([
Component({
selector: 'ngx-pie-chart',
template: "<div class=\"chart-view ngx-pie\">\n <svg class=\"chart-wrapper\" [ngStyle]=\"{'height': chartView[0],'width': chartView[1]}\">\n <path #el class=\"pie-chart-path\" chartTooltip tooltip={{item.name}} (click)=\"getItemClicked(item)\" *ngFor=\"let item of processedData; let i=index\" />\n </svg>\n <div class=\"legend\" *ngIf=\"chartOptions.showLegend\">\n <h4>{{chartOptions.legendTitle +' : '+ totalSum}}</h4>\n <div class=\"legend-item\" *ngFor=\"let item of legendData; let i=index\">\n <div class=\"legend-item-colour\" [ngStyle]=\"{'background': item.color}\"></div><span class=\"legend-item-name\" >{{item.name}}</span><span class=\"legend-item-value\" >{{item.value}}</span>\n </div>\n </div>\n</div>",
styles: ["path.pie-chart-path:hover{cursor:pointer}"]
})
], PieChartComponent);
return PieChartComponent;
}());
export { PieChartComponent };
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{ Component, ElementRef, EventEmitter, Input, OnInit, Output, QueryList, ViewChildren } from '@angular/core';\nimport { ChartData, ChartOption } from '../../_model/chartData';\nimport { PieChartView } from '../../_model/pieChartOptions';\n\n\n@Component({\n  selector: 'ngx-pie-chart',\n  templateUrl: './pie-chart.component.html',\n  styleUrls: ['./pie-chart.component.scss']\n})\nexport class PieChartComponent implements OnInit {\n\n  @Input() chartData: ChartData[];\n  @ViewChildren('el') span: QueryList<ElementRef>;\n  @Output() selectedItem = new EventEmitter<any>();\n  @Input() chartOptions: ChartOption = {\n    showLegend : true,\n    legendTitle: 'Total',\n  }\n  @Input() view: PieChartView = {\n    height: 200,\n    width: 200,\n    radius : 80\n  }\n  chartView = [];\n  totalSum = 0;\n  processedData = []\n  legendData = []\n\n  constructor() { }\n\n  ngOnInit(): void {\n\n    this.chartView.push(this.view.height+'px')\n    this.chartView.push(this.view.width+'px')\n\n    if (this.chartData) {\n      // Get total number of records\n      this.totalSum = this.chartData.reduce(function (a, b) {\n        return a + b.value;\n      }, 0);\n\n\n\n      //generate Data for piechart\n      let prevAngle = 0\n      this.chartData.map((x, index) => {\n\n        let legend = {\n          name: x.name,\n          value: x.value,\n          color: x.color\n        }\n\n        this.legendData.push(legend)\n\n        let percentage = this.getPercentage(x.value, this.totalSum);\n        if (percentage > 0) {\n          let circlePercentage = percentage / 10 * 36;\n          let pieData = {\n            color: x.color,\n            a1: prevAngle,\n            a2: prevAngle + circlePercentage,\n            name: x.name\n          }\n          prevAngle = prevAngle + circlePercentage\n          this.processedData.push(pieData);\n        }\n      });\n    }\n\n  }\n\n\n  ngAfterViewInit(): void {\n    // create svg \n    if (this.processedData.length > 0) {\n      this.span.map((item: ElementRef, index) => {\n        this.processedData[index].a2 = this.processedData[index].a2 >= 360 ? 359.9 : this.processedData[index].a2;\n        item.nativeElement.setAttribute('d', this.describeArc(this.view.height/2, this.view.height/2, this.view.radius, this.processedData[index].a1, this.processedData[index].a2));\n        item.nativeElement.setAttribute('fill', this.processedData[index].color);\n      });\n    }\n\n  }\n\n  polarToCartesian(centerX, centerY, radius, angleInDegrees) {\n    let angleInRadians = (angleInDegrees - 90) * Math.PI / 180.0;\n\n    return {\n      x: centerX + (radius * Math.cos(angleInRadians)),\n      y: centerY + (radius * Math.sin(angleInRadians))\n    };\n  }\n\n  describeArc(x, y, radius, startAngle, endAngle) {\n    let start = this.polarToCartesian(x, y, radius, endAngle);\n    let end = this.polarToCartesian(x, y, radius, startAngle);\n\n    let arcSweep = endAngle - startAngle <= 180 ? \"0\" : \"1\";\n\n    let d = [\n      \"M\", start.x, start.y,\n      \"A\", radius, radius, 0, arcSweep, 0, end.x, end.y,\n      \"L\", x, y,\n      \"L\", start.x, start.y\n    ].join(\" \");\n    return d;\n  }\n\n  getPercentage(partialValue, totalValue): number {\n    return (100 * partialValue) / totalValue;\n  }\n  getItemClicked(item) {\n    let selected = {\n      name:item.name,\n      value:item.value\n    }\n    this.selectedItem.emit(selected);  }\n\n}"]}