L-BTC in circulation dashboard widget

refs #718

frontend/src/app/components/lbtc-pegs-graph/lbtc-pegs-graph.component.html

@@ -0,0 +1 @@
+<div class="echarts" echarts [initOpts]="pegsChartInitOption" [options]="pegsChartOptions"></div>

frontend/src/app/components/lbtc-pegs-graph/lbtc-pegs-graph.component.ts

@@ -0,0 +1,137 @@
+import { Component, OnInit, Inject, LOCALE_ID, ChangeDetectionStrategy, Output, EventEmitter, Input, OnChanges } from '@angular/core';
+import { formatDate, formatNumber } from '@angular/common';
+import { EChartsOption } from 'echarts';
+import { ApiService } from 'src/app/services/api.service';
+import { map } from 'rxjs/operators';
+import { Observable } from 'rxjs';
+
+@Component({
+  selector: 'app-lbtc-pegs-graph',
+  templateUrl: './lbtc-pegs-graph.component.html',
+  changeDetection: ChangeDetectionStrategy.OnPush,
+})
+export class LbtcPegsGraphComponent implements OnChanges {
+  @Input() data: any;
+  pegsChartOptions: EChartsOption;
+
+  height: number | string = '200';
+  right: number | string = '10';
+  top: number | string = '20';
+  left: number | string = '50';
+  template: ('widget' | 'advanced') = 'widget';
+
+  pegsChartOption: EChartsOption = {};
+  pegsChartInitOption = {
+    renderer: 'svg'
+  };
+
+  constructor(
+    @Inject(LOCALE_ID) private locale: string,
+  ) { }
+
+  ngOnChanges() {
+    this.pegsChartOptions = this.createChartOptions(this.data.series, this.data.labels);
+  }
+
+  createChartOptions(series: number[], labels: string[]): EChartsOption {
+    return {
+      grid: {
+        height: this.height,
+        right: this.right,
+        top: this.top,
+        left: this.left,
+      },
+      animation: false,
+      dataZoom: [{
+        type: 'inside',
+        realtime: true,
+        zoomOnMouseWheel: (this.template === 'advanced') ? true : false,
+        maxSpan: 100,
+        minSpan: 10,
+      }, {
+        show: (this.template === 'advanced') ? true : false,
+        type: 'slider',
+        brushSelect: false,
+        realtime: true,
+        selectedDataBackground: {
+          lineStyle: {
+            color: '#fff',
+            opacity: 0.45,
+          },
+          areaStyle: {
+            opacity: 0,
+          }
+        }
+      }],
+      tooltip: {
+        trigger: 'axis',
+        position: (pos, params, el, elRect, size) => {
+          const obj = { top: -20 };
+          obj[['left', 'right'][+(pos[0] < size.viewSize[0] / 2)]] = 80;
+          return obj;
+        },
+        extraCssText: `width: ${(this.template === 'widget') ? '125px' : '135px'};
+                      background: transparent;
+                      border: none;
+                      box-shadow: none;`,
+        axisPointer: {
+          type: 'line',
+        },
+        formatter: (params: any) => {
+          const colorSpan = (color: string) => `<span class="indicator" style="background-color: #116761;"></span>`;
+          let itemFormatted = '<div class="title">' + params[0].axisValue + '</div>';
+          params.map((item: any, index: number) => {
+            if (index < 26) {
+              itemFormatted += `<div class="item">
+                <div class="indicator-container">${colorSpan(item.color)}</div>
+                <div class="grow"></div>
+                <div class="value">${formatNumber(item.value, this.locale, '1.2-2')} <span class="symbol">L-BTC</span></div>
+              </div>`;
+            }
+          });
+          return `<div class="tx-wrapper-tooltip-chart ${(this.template === 'advanced') ? 'tx-wrapper-tooltip-chart-advanced' : ''}">${itemFormatted}</div>`;
+        }
+      },
+      xAxis: {
+        type: 'category',
+        axisLabel: {
+          align: 'center',
+          fontSize: 11,
+          lineHeight: 12
+        },
+        data: labels.map((value: any) => `${formatDate(value, 'MMM\ny', this.locale)}`),
+      },
+      yAxis: {
+        type: 'value',
+        axisLabel: {
+          fontSize: 11,
+        },
+        splitLine: {
+          lineStyle: {
+            type: 'dotted',
+            color: '#ffffff66',
+            opacity: 0.25,
+          }
+        }
+      },
+      series: [
+        {
+          data: series,
+          type: 'line',
+          stack: 'total',
+          smooth: false,
+          showSymbol: false,
+          areaStyle: {
+            opacity: 0.2,
+            color: '#116761',
+          },
+          lineStyle: {
+            width: 3,
+            color: '#116761',
+          },
+        },
+      ],
+    };
+  }
+}
+