feat: 修改实现方式
This commit is contained in:
tangge233
+18
-16
@@ -1,32 +1,34 @@
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Public Class MyImage
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Inherits Image
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'事件
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'自定义属性
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Public Uuid As Integer = GetUuid()
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Private _Uri As String = ""
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Public Property Source As String
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Private _SourceData As String = ""
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''' <summary>
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''' 重写Image的Source属性
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''' </summary>
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Public Shadows Property Source As String
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Get
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Return _Uri
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Return _SourceData
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End Get
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Set(value As String)
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_Uri = value
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RefreshImage()
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SetImage(value)
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End Set
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End Property '显示文本
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Public Shared ReadOnly SourceProperty As DependencyProperty = DependencyProperty.Register("Source", GetType(String), GetType(MyImage), New PropertyMetadata(New PropertyChangedCallback(
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End Property
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Public Shared Shadows ReadOnly SourceProperty As DependencyProperty = DependencyProperty.Register("Source", GetType(String), GetType(MyImage), New PropertyMetadata(New PropertyChangedCallback(
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Sub(sender As DependencyObject, e As DependencyPropertyChangedEventArgs)
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If Not IsNothing(sender) Then
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CType(sender, MyImage)._Uri = e.NewValue.ToString()
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CType(sender, MyImage).RefreshImage()
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CType(sender, MyImage).SetImage(e.NewValue)
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End If
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End Sub)))
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Public Sub RefreshImage()
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Private Sub SetImage(source As String)
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If Me Is Nothing Then Exit Sub
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Try
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PanContent.Source = New MyBitmap(_Uri.ToString())
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Catch ex As Exception
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Log(ex, "刷新图片内容失败")
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End Try
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If String.IsNullOrEmpty(source) Then Exit Sub
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_SourceData = source
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MyBase.Source = New MyBitmap(_SourceData)
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End Sub
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End Class
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@@ -1,7 +0,0 @@
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<Border x:Class="MyImage"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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FocusVisualStyle="{x:Null}" x:Name="PanBack"
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ClipToBounds="True" UseLayoutRounding="False" SnapsToDevicePixels="False" Background="{StaticResource ColorBrushSemiTransparent}">
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<Image x:Name="PanContent"/>
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</Border>
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@@ -64,29 +64,36 @@ Public Class MyBitmap
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BitmapCache.Add(FilePathOrResourceName, Pic)
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End If
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Else
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Dim tempFile = PathTemp & "Cache\MyImage\" & GetHash(FilePathOrResourceName)
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If FilePathOrResourceName.StartsWith("http") Then
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If FilePathOrResourceName.StartsWithF("http") Then '在线图片（这里判断 https:\\ 或 http:\\ 会出问题）
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Dim tempFile = PathTemp & "Cache\MyImage\" & GetHash(FilePathOrResourceName)
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NetDownload(FilePathOrResourceName, tempFile, True)
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FilePathOrResourceName = tempFile
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ElseIf FilePathOrResourceName.StartsWithF("data:image/png;base64,") Then 'base64 图片
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Dim base64Data = FilePathOrResourceName.Split(",")(1)
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Dim imageData = Convert.FromBase64String(base64Data)
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Using ms = New MemoryStream(imageData)
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Pic = New System.Drawing.Bitmap(ms)
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End Using
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Return
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End If
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'使用这种自己接管 FileStream 的方法加载才能解除文件占用
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Using InputStream As New FileStream(FilePathOrResourceName, FileMode.Open)
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'判断是否为 WebP 文件头
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Dim Header(1) As Byte
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InputStream.Read(Header, 0, 2)
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InputStream.Seek(0, SeekOrigin.Begin)
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If Header(0) = 82 AndAlso Header(1) = 73 Then
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'读取 WebP
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If Is32BitSystem Then Throw New Exception("不支持在 32 位系统下加载 WebP 图片。")
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Dim FileBytes(InputStream.Length - 1) As Byte
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InputStream.Read(FileBytes, 0, FileBytes.Length)
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Dim Decoder As New Imazen.WebP.SimpleDecoder()
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Pic = Decoder.DecodeFromBytes(FileBytes, FileBytes.Length)
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Else
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Pic = New System.Drawing.Bitmap(InputStream)
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End If
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End Using
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End If
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'判断是否为 WebP 文件头
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Dim Header(1) As Byte
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InputStream.Read(Header, 0, 2)
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InputStream.Seek(0, SeekOrigin.Begin)
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If Header(0) = 82 AndAlso Header(1) = 73 Then
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'读取 WebP
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If Is32BitSystem Then Throw New Exception("不支持在 32 位系统下加载 WebP 图片。")
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Dim FileBytes(InputStream.Length - 1) As Byte
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InputStream.Read(FileBytes, 0, FileBytes.Length)
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Dim Decoder As New Imazen.WebP.SimpleDecoder()
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Pic = Decoder.DecodeFromBytes(FileBytes, FileBytes.Length)
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Else
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Pic = New System.Drawing.Bitmap(InputStream)
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End If
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End Using
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End If
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Catch ex As Exception
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Pic = My.Application.TryFindResource(FilePathOrResourceName)
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If Pic Is Nothing Then
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@@ -183,9 +183,6 @@
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<SubType>Designer</SubType>
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</ApplicationDefinition>
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<Compile Include="Controls\IMyRadio.vb" />
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<Compile Include="Controls\MyImage.xaml.vb">
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<DependentUpon>MyImage.xaml</DependentUpon>
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</Compile>
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<Compile Include="Controls\MyComboBox.vb" />
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<Compile Include="Controls\MyComboBoxItem.vb" />
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<Compile Include="Controls\MyCard.vb" />
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@@ -194,6 +191,7 @@
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<Compile Include="Controls\MyIconTextButton.xaml.vb">
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<DependentUpon>MyIconTextButton.xaml</DependentUpon>
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</Compile>
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<Compile Include="Controls\MyImage.vb" />
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<Compile Include="Modules\Minecraft\ModComp.vb" />
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<Compile Include="Modules\Minecraft\ModJava.vb" />
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<Compile Include="Modules\Minecraft\ModMod.vb" />
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@@ -381,10 +379,6 @@
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<Compile Include="Pages\PageSpeedRight.xaml.vb">
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<DependentUpon>PageSpeedRight.xaml</DependentUpon>
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</Compile>
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<Page Include="Controls\MyImage.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</Page>
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<Page Include="Controls\MyExtraButton.xaml">
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<SubType>Designer</SubType>
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<Generator>MSBuild:Compile</Generator>
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