fix(图表): 修复导出地图时，在不是预览状态下导出图片或者PDF时地图空白的问题

core/core-frontend/src/components/data-visualization/canvas/Shape.vue

@@ -1107,12 +1107,14 @@ const dragCollision = computed(() => {
 
 const htmlToImage = () => {
   downLoading.value = true
+  useEmitt().emitter.emit('l7-prepare-picture', element.value.id)
   setTimeout(() => {
     activeWatermarkCheckUser(viewDemoInnerId.value, 'canvas-main', scale.value)
     downloadCanvas2('img', componentInnerRef.value, '图表', () => {
       // do callback
       removeActiveWatermark(viewDemoInnerId.value)
       downLoading.value = false
+      useEmitt().emitter.emit('l7-unprepare-picture', element.value.id)
     })
   }, 200)
 }

core/core-frontend/src/components/visualization/UserViewEnlarge.vue

@@ -420,9 +420,12 @@ const openMessageLoading = cb => {
     customClass
   })
 }
+// 地图
+const mapChartTypes = ['bubble-map', 'flow-map', 'heat-map', 'map', 'symbolic-map']
 const htmlToImage = () => {
-  downLoading.value = true
+  downLoading.value = mapChartTypes.includes(viewInfo.value.type) ? false : true
   useEmitt().emitter.emit('renderChart-' + viewInfo.value.id)
+  useEmitt().emitter.emit('l7-prepare-picture', viewInfo.value.id)
   // 表格和支持最值图表的渲染时间为2000毫秒，其他图表为500毫秒。
   const renderTime =
     viewInfo.value.type?.includes('table') ||
@@ -438,12 +441,14 @@ const htmlToImage = () => {
         a.setAttribute('download', viewInfo.value.title)
         a.href = dataUrl
         a.click()
+        useEmitt().emitter.emit('l7-unprepare-picture', viewInfo.value.id)
         useEmitt().emitter.emit('renderChart-' + viewInfo.value.id)
         initWatermark()
       })
       .catch(error => {
         downLoading.value = false
         initWatermark()
+        useEmitt().emitter.emit('l7-unprepare-picture', viewInfo.value.id)
         useEmitt().emitter.emit('renderChart-' + viewInfo.value.id)
         console.error('oops, something went wrong!', error)
       })

core/core-frontend/src/views/dashboard/DashboardPreviewShow.vue

@@ -115,13 +115,20 @@ const loadCanvasData = (dvId, weight?) => {
     }
   )
 }
-
+// 地图类图表，需要预先准备图片
+const mapChartTypes = ['bubble-map', 'flow-map', 'heat-map', 'map', 'symbolic-map']
 const downloadH2 = type => {
   downloadStatus.value = true
+  const mapElementIds =
+    state.canvasDataPreview
+      ?.filter(ele => mapChartTypes.includes(ele.innerType))
+      .map(ele => ele.id) || []
+  mapElementIds.forEach(id => useEmitt().emitter.emit('l7-prepare-picture', id))
   nextTick(() => {
     const vueDom = previewCanvasContainer.value.querySelector('.canvas-container')
     downloadCanvas2(type, vueDom, state.dvInfo.name, () => {
       downloadStatus.value = false
+      mapElementIds.forEach(id => useEmitt().emitter.emit('l7-unprepare-picture', id))
     })
   })
 }