feat: 修改实现方式

2024-10-02 12:07:42 +08:00
parent 805a0e1544
commit a6aa7847c0
4 changed files with 44 additions and 48 deletions
@@ -0,0 +1,34 @@
+Public Class MyImage
+    Inherits Image
+
+    '事件
+
+    Public Uuid As Integer = GetUuid()
+
+    Private _SourceData As String = ""
+
+    ''' <summary>
+    ''' 重写Image的Source属性
+    ''' </summary>
+    Public Shadows Property Source As String
+        Get
+            Return _SourceData
+        End Get
+        Set(value As String)
+            SetImage(value)
+        End Set
+    End Property
+    Public Shared Shadows ReadOnly SourceProperty As DependencyProperty = DependencyProperty.Register("Source", GetType(String), GetType(MyImage), New PropertyMetadata(New PropertyChangedCallback(
+                                                                                                                                                               Sub(sender As DependencyObject, e As DependencyPropertyChangedEventArgs)
+                                                                                                                                                                   If Not IsNothing(sender) Then
+                                                                                                                                                                       CType(sender, MyImage).SetImage(e.NewValue)
+                                                                                                                                                                   End If
+                                                                                                                                                               End Sub)))
+
+    Private Sub SetImage(source As String)
+        If Me Is Nothing Then Exit Sub
+        If String.IsNullOrEmpty(source) Then Exit Sub
+        _SourceData = source
+        MyBase.Source = New MyBitmap(_SourceData)
+    End Sub
+End Class