feat(charts): add the charts demos

src/app/pages/charts/echarts/echarts-area-stack.component.ts

@@ -2,7 +2,92 @@ import { Component } from '@angular/core';
 
 @Component({
   selector: 'ngx-echarts-area-stack',
-  template: ``,
+  template: `
+    <div echarts [options]="options" class="echart"></div>
+  `,
 })
 export class EchartsAreaStackComponent {
+  options = {
+    title: {
+      text: '堆叠区域图',
+    },
+    tooltip: {
+      trigger: 'axis',
+      axisPointer: {
+        type: 'cross',
+        label: {
+          backgroundColor: '#6a7985',
+        },
+      },
+    },
+    legend: {
+      data: ['邮件营销', '联盟广告', '视频广告', '直接访问', '搜索引擎'],
+    },
+    toolbox: {
+      feature: {
+        saveAsImage: {},
+      },
+    },
+    grid: {
+      left: '3%',
+      right: '4%',
+      bottom: '3%',
+      containLabel: true,
+    },
+    xAxis: [
+      {
+        type: 'category',
+        boundaryGap: false,
+        data: ['周一', '周二', '周三', '周四', '周五', '周六', '周日'],
+      },
+    ],
+    yAxis: [
+      {
+        type: 'value',
+      },
+    ],
+    series: [
+      {
+        name: '邮件营销',
+        type: 'line',
+        stack: '总量',
+        areaStyle: { normal: {} },
+        data: [120, 132, 101, 134, 90, 230, 210],
+      },
+      {
+        name: '联盟广告',
+        type: 'line',
+        stack: '总量',
+        areaStyle: { normal: {} },
+        data: [220, 182, 191, 234, 290, 330, 310],
+      },
+      {
+        name: '视频广告',
+        type: 'line',
+        stack: '总量',
+        areaStyle: { normal: {} },
+        data: [150, 232, 201, 154, 190, 330, 410],
+      },
+      {
+        name: '直接访问',
+        type: 'line',
+        stack: '总量',
+        areaStyle: { normal: {} },
+        data: [320, 332, 301, 334, 390, 330, 320],
+      },
+      {
+        name: '搜索引擎',
+        type: 'line',
+        stack: '总量',
+        label: {
+          normal: {
+            show: true,
+            position: 'top',
+          },
+        },
+        areaStyle: { normal: {} },
+        data: [820, 932, 901, 934, 1290, 1330, 1320],
+      },
+    ],
+  };
 }