fix: 增加Peak Infomation操作红线时，自动聚焦图表，以让键盘事件生效

src/views/spectrumAnalysis/gamma-analysis.vue

@@ -895,7 +895,7 @@ export default {
 
     // 点击图表，设置红线
     handleChartClick(param) {
-      this.$refs.chartContainerRef.focus()
+      this.focusChart()
       const { offsetX, offsetY } = param
       const point = getXAxisAndYAxisByPosition(this.getChart(), offsetX, offsetY)
       if (point) {
@@ -910,6 +910,11 @@ export default {
       }
     },
 
+    // 聚焦图表容器，以接收keydown事件
+    focusChart() {
+      this.$refs.chartContainerRef.focus()
+    },
+
     // 设置图表底部的标题
     setChartBottomTitle(channel, energy, counts) {
       const { index, find } = findNearPeak(channel, this.peakList)
@@ -981,10 +986,13 @@ export default {
     // peak info 点击左右方向
     handlePeakInfoChange(direction) {
       this.moveMarkLine(direction)
+      this.focusChart()
     },
 
     // 触发Peak Infomation
     handleTogglePeak() {
+      this.focusChart()
+
       const spectrumLineSeries = findSeriesByName(this.option.series, 'Spectrum')
       const xAxis = spectrumLineSeries.markLine.data[0].xAxis
       const channel = this.isEnergy ? this.getChannelByEnergy(xAxis) : parseInt(xAxis.toFixed())