完成简单的位置变化

lib/popup_layer/popup_layer.dart

@@ -25,8 +25,8 @@ class _PopupLayerState extends State<PopupLayer> {
         .removeListener(_onPopupMoreSchedule);
   }
 
+  /// 收到显示更多日程的事件
   void _onPopupMoreSchedule(e, GlobalKey key) {
-    print('onPopupMoreSchedule $key');
     setState(() {
       moreSchedulePopupKey = key;
     });
@@ -48,27 +48,34 @@ class _PopupLayerState extends State<PopupLayer> {
     final Offset popupOffset =
         _calcPopupLayerOffset(triggerOffset, triggerSize);
     print('计算得的弹出层位置: $popupOffset');
-    return Container(
-      decoration: BoxDecoration(
-        color: Colors.white,
-        borderRadius: BorderRadius.circular(8),
-        border: Border.all(color: Colors.black12, width: 1),
+    return Positioned(
+      left: triggerOffset.dx,
+      top: triggerOffset.dy,
+      child: Container(
+        decoration: BoxDecoration(
+          color: Colors.white,
+          borderRadius: BorderRadius.circular(8),
+          border: Border.all(color: Colors.black12, width: 1),
 
-        /// 简单阴影
-        boxShadow: const [
-          BoxShadow(
-            color: Colors.black12,
-            offset: Offset(3, 3),
-            blurRadius: 25,
-          ),
-        ],
+          /// 简单阴影
+          boxShadow: const [
+            BoxShadow(
+              color: Colors.black12,
+              offset: Offset(3, 3),
+              blurRadius: 25,
+            ),
+          ],
+        ),
+        width: triggerSize.width,
+        height: 400,
+        child: Text(popupLayerController.currMoreScheduleData.toString()),
       ),
-      width: 240,
-      height: 400,
-      child: Text(popupLayerController.currMoreScheduleData.toString()),
     );
   }
 
+  static const double _popupLayerMarginTop = 70;
+  static const double _popupLayerMarginLeft = 240;
+
   /// 通过组件的 key 获取对应的组件的大小信息
   /// [key] 组件的 key
   Size getWidgetSize(GlobalKey key) {
@@ -77,18 +84,22 @@ class _PopupLayerState extends State<PopupLayer> {
           key.currentContext?.findRenderObject() as RenderBox;
       return renderBox.size;
     } catch (e) {
+      print('获取大小信息失败: $e');
       return Size.zero;
     }
   }
 
-  /// 通过组件的 key 获取对应的组件的位置信息
+  /// 通过组件的 key 获取对应的组件在弹出层的位置
   /// [key] 组件的 key
   Offset getWidgetOffset(GlobalKey key) {
     try {
       final RenderBox renderBox =
           key.currentContext?.findRenderObject() as RenderBox;
-      return renderBox.localToGlobal(Offset.zero);
+      return renderBox
+          .localToGlobal(Offset.zero)
+          .translate(-_popupLayerMarginLeft, -_popupLayerMarginTop);
     } catch (e) {
+      print('获取位置信息失败: $e');
       return Offset.zero;
     }
   }