完善 LocationBar 布局和事件相应功能

src/core/widget/LocationBar.js

@@ -18,6 +18,7 @@ class LocationBar extends Widget {
     this._cameraEl = undefined
     this.type = Widget.getWidgetType('location_bar')
     this._state = State.INITIALIZED
+    this._lastUpdate = Cesium.getTimestamp()
   }
 
   /**
@@ -65,6 +66,11 @@ class LocationBar extends Widget {
    * @private
    */
   _moveHandler(e) {
+    let now = Cesium.getTimestamp()
+    if (now < this._lastUpdate + 300) {
+      return
+    }
+    this._lastUpdate = now
     let ellipsoid = Cesium.Ellipsoid.WGS84
     let cartographic = e.surfacePosition
       ? ellipsoid.cartesianToCartographic(e.surfacePosition)
@@ -81,6 +87,11 @@ class LocationBar extends Widget {
   }
 
   _cameraHandler() {
+    let now = Cesium.getTimestamp()
+    if (now < this._lastUpdate + 300) {
+      return
+    }
+    this._lastUpdate = now
     let cameraPosition = this._viewer.cameraPosition
     this._cameraEl.innerHTML = `
       <span>视角：${(+cameraPosition.pitch).toFixed(2)}</span>

src/themes/locationbar.scss

@@ -11,5 +11,12 @@
   display: flex;
   span {
     margin: 0 8px;
+    display: inline-block;
   }
+  .mouse-location{
+    span{
+      min-width: 125px;
+    }
+  }
+
 }