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161 lines
4.3 KiB
161 lines
4.3 KiB
<template>
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<view class="qiun-columns">
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<!--#ifdef H5 -->
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<view class="qiun-bg-white qiun-title-bar qiun-common-mt" >
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<view class="qiun-title-dot-light">页面地址</view>
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</view>
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<view class="qiun-bg-white qiun-padding">
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<text>pages/basic/column/stack</text>
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</view>
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<!--#endif-->
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<view class="qiun-bg-white qiun-title-bar qiun-common-mt" >
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<view class="qiun-title-dot-light">堆叠柱状图</view>
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</view>
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<view class="qiun-charts" >
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<!--#ifdef MP-ALIPAY -->
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<canvas canvas-id="canvasColumnStack" id="canvasColumnStack" class="charts" :width="cWidth*pixelRatio" :height="cHeight*pixelRatio" :style="{'width':cWidth+'px','height':cHeight+'px'}" @touchstart="touchColumn"></canvas>
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<!--#endif-->
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<!--#ifndef MP-ALIPAY -->
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<canvas canvas-id="canvasColumnStack" id="canvasColumnStack" class="charts" @touchstart="touchColumn"></canvas>
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<!--#endif-->
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</view>
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<!--#ifdef H5 -->
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<view class="qiun-bg-white qiun-title-bar qiun-common-mt" >
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<view class="qiun-title-dot-light">标准数据格式</view>
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</view>
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<view class="qiun-bg-white qiun-padding">
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<textarea class="qiun-textarea" auto-height="true" maxlength="-1" v-model="textarea"/>
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</view>
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<view class="qiun-text-tips">Tips：修改后点击更新图表</view>
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<button class="qiun-button" @tap="changeData()">更新图表</button>
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<!--#endif-->
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</view>
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</template>
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<script>
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import uCharts from '@/components/u-charts/u-charts.js';
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import { isJSON } from '@/common/checker.js';
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var _self;
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var canvaColumn=null;
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export default {
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data() {
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return {
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cWidth:'',
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cHeight:'',
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pixelRatio:1,
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textarea:''
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}
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},
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onLoad() {
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_self = this;
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//#ifdef MP-ALIPAY
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uni.getSystemInfo({
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success: function (res) {
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if(res.pixelRatio>1){
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//正常这里给2就行，如果pixelRatio=3性能会降低一点
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//_self.pixelRatio =res.pixelRatio;
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_self.pixelRatio =2;
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}
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}
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});
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//#endif
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this.cWidth=uni.upx2px(750);
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this.cHeight=uni.upx2px(500);
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this.getServerData();
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},
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methods: {
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getServerData(){
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uni.request({
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url: 'http://www.yjlive.cn:8085/common/data.json',
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data:{
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},
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success: function(res) {
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console.log(res.data.data)
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let ColumnStack={categories:[],series:[]};
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//这里我后台返回的是数组，所以用等于，如果您后台返回的是单条数据，需要push进去
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ColumnStack.categories=res.data.data.ColumnStack.categories;
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ColumnStack.series=res.data.data.ColumnStack.series;
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_self.textarea = JSON.stringify(res.data.data.ColumnStack);
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_self.showColumnStack("canvasColumnStack",ColumnStack);
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},
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fail: () => {
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_self.tips="网络错误，小程序端请检查合法域名";
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},
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});
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},
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showColumnStack(canvasId,chartData){
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canvaColumn=new uCharts({
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$this:_self,
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canvasId: canvasId,
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type: 'column',
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padding:[15,15,0,15],
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legend:{
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show:true,
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padding:5,
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lineHeight:11,
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margin:0,
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},
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fontSize:11,
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background:'#FFFFFF',
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pixelRatio:_self.pixelRatio,
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animation: true,
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categories: chartData.categories,
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series: chartData.series,
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xAxis: {
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disableGrid:true,
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},
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yAxis: {
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//disabled:true
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},
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dataLabel: true,
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width: _self.cWidth*_self.pixelRatio,
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height: _self.cHeight*_self.pixelRatio,
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extra: {
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column: {
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type:'stack',
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width: _self.cWidth*_self.pixelRatio*0.5/chartData.categories.length
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}
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}
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});
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},
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touchColumn(e){
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canvaColumn.touchLegend(e);
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canvaColumn.showToolTip(e, {
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format: function (item, category) {
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return category + ' ' + item.name + ':' + item.data
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}
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});
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},
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changeData(){
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if(isJSON(_self.textarea)){
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let newdata=JSON.parse(_self.textarea);
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canvaColumn.updateData({
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series: newdata.series,
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categories: newdata.categories
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});
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}else{
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uni.showToast({
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title:'数据格式错误',
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image:'../../../static/images/alert-warning.png'
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})
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}
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}
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}
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}
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</script>
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<style>
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/*样式的width和height一定要与定义的cWidth和cHeight相对应*/
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.qiun-charts {
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width: 750upx;
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height: 500upx;
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background-color: #FFFFFF;
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}
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.charts {
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width: 750upx;
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height: 500upx;
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background-color: #FFFFFF;
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}
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</style>
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