[GitHub] [incubator-echarts] LesterWeng opened a new issue #11258: 'textAlign' doesn't work while using 'svg' renderer

[GitBox]

LesterWeng opened a new issue #11258: 'textAlign' doesn't work while using 
'svg' renderer
URL: https://github.com/apache/incubator-echarts/issues/11258
 
 
   Version
   4.2.1
   
   Steps to reproduce
   set render: this.waterfall = echarts.init(
        this.$el.querySelector(".content-waterfall"),
        undefined,
        {
          renderer: "svg"
        }
      )
   set text option: this.waterfall.setOption({
   
      tooltip: {
        trigger: "item"
      },
      xAxis: {
        type: "time",
        splitLine: {
          show: false
        },
        position: "top",
        splitNumber: 20,
        min: this.startTime.toDate().getTime(),
        max: this.endTime.toDate().getTime()
      },
      grid: {
        left: "20",
        right: "20",
        containLabel: true
      },
      yAxis: {
        inverse: true,
        show: false,
        type: "category"
      },
      series: [
        {
          type: "custom",
          encode: {
            x: [1, 2],
            y: 0
          },
          renderItem: (params, api) => {
            const categoryIndex = api.value(0);
            const start = api.coord([api.value(1), categoryIndex]);
            const end = api.coord([api.value(2), categoryIndex]);
            const height = 12;
   
            const rectShape = echarts.graphic.clipRectByRect(
              {
                x: start[0],
                y: start[1] - height / 2,
                width: end[0] - start[0],
                height: height
              },
              {
                x: params.coordSys.x,
                y: params.coordSys.y,
                width: params.coordSys.width,
                height: params.coordSys.height
              }
            );
            let textAlign, position;
            const min = this.startTime.toDate().getTime(),
              max = this.endTime.toDate().getTime();
            if (api.value(1) - min >= max - api.value(2)) {
              textAlign = 'right';
              position = [start[0] - 5, start[1]];
            } else {
              textAlign = 'left';
              position = [end[0] + 5, end[1]];
            }
   
            return {
              type: "group",
              children: [
                {
                  type: "rect",
                  shape: rectShape,
                  style: api.style()
                },
                {
                  type: "text",
                  silent: true,
                  style: {
                    text: api.value(3),
                    textAlign,
                    textVerticalAlign: "middle"
                  },
                  position
                }
              ]
            };
          },
          data: data.map((t, index) => {
            return {
              value: [
                index,
                t.missionStartTimestamp,
                t.missionEndTimestamp,
                t.missionName,
                t.missionId
              ],
              itemStyle: {
                color: COLOR_MAP[t.missionColorType]
              },
              // label: {
              //   show: true,
              //   color: "#000",
              //   formatter(params) {
              //     // 超过10个文字缩略展示
              //     return params.value[3].length > 10
              //       ? params.value[3].slice(0, 11) + "..."
              //       : params.value[3];
              //   },
              //   position: this.getMissionNamePosition(t)
              // },
              tooltip: {
                show: true,
                formatter(params) {
                  return params.value[3];
                }
              }
            };
          })
        }
      ]
    });
   What is expected?
   while set 'left': 'text-anchor' of the text tspan shoud be 'start' and set 
'right': 'text-anchor' of the text tspan shoud be 'end'
   
   What is actually happening?
   sometimes result is all 'start' and sometimes result is all 'end'
   
   

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