[GitHub] menkeydyvh opened a new issue #8778: 添加自定义矩形会对改变原有的k线图大小

[GitBox <gi...@apache.org>]

menkeydyvh opened a new issue #8778: 添加自定义矩形会对改变原有的k线图大小
URL: https://github.com/apache/incubator-echarts/issues/8778
 
 
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   ### One-line summary [问题简述]
   可以通过黏贴下面javascripts看到  custom内容的引入导致图形变化  变形严重
   
   
   
   ### Version & Environment [版本及环境]
   + ECharts version [ECharts 版本]:  "echarts": "^4.1.0",
   
   
   
   ### Expected behaviour [期望结果]
   
   
   
   ### ECharts option [ECharts配置项]
   <!-- Copy and paste your 'echarts option' here. -->
   <!-- [下方贴你的option，注意不要删掉下方 ```javascript 和 尾部的 ``` 字样。最好是我们能够直接运行的 option。如何得到能运行的 option 参见上方的 guidelines for contributing] -->
   ```javascript
   
   var dataAry = [
       [75.449996948242,75.900001525879,75.449996948242,76.349998474121],
       [75.699996948242,76.099998474121,75.599998474121,76.199996948242],
       [76.699996948242,77.099998474121,76.699996948242,77.300003051758],
       [77.900001525879,77.550003051758,77.300003051758,77.900001525879],
       [78.050003051758,78.400001525879,78,78.599998474121],
       [78.550003051758,77.949996948242,77.699996948242,78.550003051758],
       [77.949996948242,78.050003051758,77.75,78.199996948242],
       [77.400001525879,77,76.800003051758,77.550003051758],
       [77,77.25,76.699996948242,77.400001525879],
       [77.5,77.8,77.5,77.9],[78.25,77.5,77.5,78.25],
       [77.5,77.55,76.95,77.7],[76.9,77.05,76.8,77.25],
       [77,76.85,76.7,77.1],[76.6,75.9,75.9,76.75]
       ];
   
   function renderItem(params, api) {
   
       const startBarIndex = api.value(0); 
       const endBarIndex = api.value(1);
       const rectAreaColor = api.value(2); 
   
       let minPriceInRange = dataAry[startBarIndex][2];
       let maxPriceInRange = dataAry[startBarIndex][3];
       for (let j = startBarIndex; j <= endBarIndex; j++) {
         if (dataAry[j][2] < minPriceInRange) {
           minPriceInRange = dataAry[j][2]
         }
         if (dataAry[j][3] > maxPriceInRange) {
           maxPriceInRange = dataAry[j][3]
         }
       }
       minPriceInRange = minPriceInRange * 0.98;
       maxPriceInRange = maxPriceInRange * 1.02;
       const leftTopCornerPoint = api.coord([startBarIndex, maxPriceInRange]);
       const rightBottomCornerPoint = api.coord([endBarIndex, minPriceInRange]);
       const oneBarWidth = api.size([1, 1])[0];
       const rectWidth = Math.abs(rightBottomCornerPoint[0] - leftTopCornerPoint[0]);
       const rectHeight = Math.abs(rightBottomCornerPoint[1] - leftTopCornerPoint[1]);
   
       return {
         type: 'rect',
         shape: {
           x: leftTopCornerPoint[0] - oneBarWidth / 2,
           y: leftTopCornerPoint[1],
           width: rectWidth + oneBarWidth,
           height: rectHeight
         },
         style: {
           fill: rectAreaColor,
           opacity: 0.4,
           stroke: 'rgba(255,255,255,0.8)',
           lineWidth: 1
         },
       }
   }
   
   
   option = {
       tooltip: {
           formatter: function (params) {
               return params.marker + params.name + ': ' + params.value[3] + ' ms';
           }
       },
       title: {
           text: 'Profile',
           left: 'center'
       },
       grid: {
           height:300
       },
       xAxis: {
           scale: true,
           data: [
             1435766400000,
             1435852800000,
             1436112000000,
             1436198400000,
             1436284800000,
             1436371200000,
             1436457600000,
             1436716800000,
             1436803200000,
             1436889600000,
             1436976000000,
             1437062400000,
             1437321600000,
             1437408000000,
             1437494400000
           ]
       },
       yAxis: {
          scale: true,
       },
       series: [
            {
               name: 'k線圖',
               type: 'candlestick',
               data:   dataAry,
               itemStyle: {
                 normal: {
                   color: '#ee4e45',
                   color0: '#32C896',
                   borderColor: '#ee4e45',
                   borderColor0: '#32C896'
                 }
               }
             },
   //可以注释下面这段代码看到原图效果   图形改版太多无法展示
             {
                 type: 'custom',
                 name: 'rect-box',
                 z: 100,
                 data: [[1, 2, '#f00']],
                 renderItem: renderItem
             }
           
       ]
   }
   
   ```
   
   
   
   
   ### Other comments [其他信息]
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