ToggleButton UserControl 中的 WPF 模板绑定
我正在开发一个基本的拨动开关用户控件作为个人学习练习。 最初我设置了它,您可以在用户控件上声明一些自定义颜色属性,并且它们将用于控件内的元素。
然而,我最近发现了 ToggleButtons,并重建了我的控件以利用它们。 从那时起,我的自定义颜色属性(SwitchColor 和 SwitchBkgndColor)不再正常工作。 它们始终以默认颜色渲染,而不是我将它们放置在窗口中时指定的颜色。 这是一些代码:
<UserControl x:Class="DipSwitchToggleBtn"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:app="clr-namespace:SwitchesApp"
Width="20" Height="40">
<ToggleButton Name="ToggleBtn" IsThreeState="False">
<ToggleButton.Template>
<ControlTemplate>
<Canvas Name="SwitchBkgnd"
Background="{TemplateBinding app:DipSwitchToggleBtn.SwitchBkgndColor}"
>
<Rectangle Name="SwitchBlock"
Fill="{TemplateBinding app:DipSwitchToggleBtn.SwitchColor}"
Width="16" Height="16"
Canvas.Top="22"
Canvas.Left="2"
/>
</Canvas>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="2" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="22" />
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ToggleButton.Template>
</ToggleButton>
</UserControl>
...以及背后的代码:
Partial Public Class DipSwitchToggleBtn
Public Property State() As Boolean
Get
Return Me.ToggleBtn.IsChecked
End Get
Set(ByVal value As Boolean)
Me.ToggleBtn.IsChecked = value
End Set
End Property
Public Sub Toggle()
Me.State = Not Me.State
End Sub
#Region " Visual Properties "
Public Shared ReadOnly SwitchColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.LightGray))
Public Property SwitchColor() As Brush
Get
Return GetValue(SwitchColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchColorProperty, value)
End Set
End Property
Public Shared ReadOnly SwitchBkgndColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchBkgndColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.Gray))
Public Property SwitchBkgndColor() As Brush
Get
Return GetValue(SwitchBkgndColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchBkgndColorProperty, value)
End Set
End Property
#End Region
End Class
默认的 Gray 和 LightGray 显示在 VS2008 设计器和编译的应用程序中,但是当我在窗口中执行类似操作时:
<app:DipSwitchToggleBtn x:Name="DipSwitchTest" SwitchColor="#0000FF" SwitchBkgndColor="#000000" />
我为此实例指定的颜色不会被使用。 一切编译都没有错误,但我的控件仍然以默认颜色显示。
我相信自从我将项目嵌套在 ToggleButton 中以来,存在一些新的层次结构。
任何帮助,将不胜感激。 谢谢。
I'm developing a basic dip-switch user control as a personal learning exercise. Originally I had it set up where you could declare some custom color properties on the user control, and they would be used on elements inside the control.
However, I recenly discovered ToggleButtons, and rebuilt my control to take advantage of them. Since then, my custom color properties (SwitchColor and SwitchBkgndColor) no longer work properly. They are always rendered with the default colors, not the colors I specified when I place them in my Window. Here's some code:
<UserControl x:Class="DipSwitchToggleBtn"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:app="clr-namespace:SwitchesApp"
Width="20" Height="40">
<ToggleButton Name="ToggleBtn" IsThreeState="False">
<ToggleButton.Template>
<ControlTemplate>
<Canvas Name="SwitchBkgnd"
Background="{TemplateBinding app:DipSwitchToggleBtn.SwitchBkgndColor}"
>
<Rectangle Name="SwitchBlock"
Fill="{TemplateBinding app:DipSwitchToggleBtn.SwitchColor}"
Width="16" Height="16"
Canvas.Top="22"
Canvas.Left="2"
/>
</Canvas>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="2" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="SwitchBlock"
Duration="00:00:00.05"
Storyboard.TargetProperty="(Canvas.Top)" To="22" />
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</ToggleButton.Template>
</ToggleButton>
</UserControl>
...and the code behind:
Partial Public Class DipSwitchToggleBtn
Public Property State() As Boolean
Get
Return Me.ToggleBtn.IsChecked
End Get
Set(ByVal value As Boolean)
Me.ToggleBtn.IsChecked = value
End Set
End Property
Public Sub Toggle()
Me.State = Not Me.State
End Sub
#Region " Visual Properties "
Public Shared ReadOnly SwitchColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.LightGray))
Public Property SwitchColor() As Brush
Get
Return GetValue(SwitchColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchColorProperty, value)
End Set
End Property
Public Shared ReadOnly SwitchBkgndColorProperty As DependencyProperty = _
DependencyProperty.Register("SwitchBkgndColor", _
GetType(Brush), GetType(DipSwitchToggleBtn), _
New FrameworkPropertyMetadata(Brushes.Gray))
Public Property SwitchBkgndColor() As Brush
Get
Return GetValue(SwitchBkgndColorProperty)
End Get
Set(ByVal value As Brush)
SetValue(SwitchBkgndColorProperty, value)
End Set
End Property
#End Region
End Class
The default Gray and LightGray show up in the VS2008 designer and the compiled app, but when I do something like this in my window:
<app:DipSwitchToggleBtn x:Name="DipSwitchTest" SwitchColor="#0000FF" SwitchBkgndColor="#000000" />
The colors I specified for this instance do not get used. Everything compiles without error, but my control is still displayed with the default colors.
I believe there is some new hierarchy at play since I nested my items in the ToggleButton.
Any help would be appreciated. Thank you.
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在颜色属性的吸气剂中,您需要转换为画笔,
这可能不会有什么不同,因为它可能只是自动转换,但请尝试一下。
In the getters of your color properties you need to convert to brushes
It might not make a difference as it probably just auto-converts but give it a try.
请参阅子元素使用的自定义 UserControl 属性中的答案。 相同的概念可以应用于您的 ToggleButton。 创建没有内容的 UserControl,仅覆盖 UserControl.Template 并使用 TemplateBinding 来设置您的 props
See the answer from Custom UserControl Property used by child element. The same concept can be applied for your ToggleButton. Create UserControl with no content just a UserControl.Template override and use TemplateBinding to set your props