【发布时间】:2016-01-28 11:57:24
【问题描述】:
【问题讨论】:
标签: c# wpf xaml wpf-controls
【问题讨论】:
标签: c# wpf xaml wpf-controls
当RadioButton 没有通过样式触发器检查时,您可以更改Opacity
<RadioButton.Style>
<Style TargetType="RadioButton">
<Style.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Opacity" Value="0.5"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</RadioButton.Style>
里面的图片可以通过修改Template来创建
<RadioButton.Template>
<ControlTemplate TargetType="RadioButton">
<!-- new template -->
</ControlTemplate>
</RadioButton.Template>
默认模板可以在here找到
我的原始模板看起来像这样(我在ItemsControl 中添加了 3 个单选按钮,第二个被选中)
<StackPanel Grid.Row="0" Grid.Column="1">
<StackPanel.Resources>
<Style x:Key="Flag" TargetType="RadioButton">
<Style.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Opacity" Value="0.5"/>
</Trigger>
</Style.Triggers>
<Setter Property="BorderThickness" Value="2"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RadioButton">
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}"
Background="Transparent"
CornerRadius="20">
<Image Source="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</StackPanel.Resources>
<ItemsControl>
<RadioButton Content="../Resources/radio.png" Style="{StaticResource Flag}" BorderBrush="Red" Width="40" Height="40"/>
<RadioButton Content="../Resources/radio.png" Style="{StaticResource Flag}" BorderBrush="Orange" Width="40" Height="40"/>
<RadioButton Content="../Resources/radio.png" Style="{StaticResource Flag}" BorderBrush="Green" Width="40" Height="40"/>
</ItemsControl>
</StackPanel>
【讨论】:
一段时间后,我找到了另一种方法。可以将ListBox 与自定义ItemTemplate 一起使用,而不是自定义RadioButton
单个项目的视图模型
public class CountryVm
{
public CountryVm()
{
ImageUri = new Uri("Resources/rgb.png", UriKind.Relative);
}
public string Name { get; set; }
public Uri ImageUri { get; set; }
}
列表框标记
<ListBox Name="Countries" ItemsSource="{Binding}" SelectionMode="Single"
HorizontalAlignment="Center" VerticalAlignment="Top"
BorderThickness="0">
<!--changing default ListBoxItem to hide selection highlight-->
<ListBox.Resources>
<Style TargetType="ListBoxItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBoxItem">
<Border Background="Transparent" SnapsToDevicePixels="true">
<ContentPresenter />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ListBox.Resources>
<!--changing default orientation-->
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate DataType="{x:Type wpf2:CountryVm}">
<!--circle image border-->
<Border Name="Border"
BorderThickness="1" BorderBrush="Black" Background="{x:Null}"
Width="48" Height="48" CornerRadius="24" Margin="4"
ToolTip="{Binding Name}">
<Image Source="{Binding Path=ImageUri}" Stretch="None"/>
<!--changing selected item opacity via trigger-->
<Border.Style>
<Style TargetType="Border">
<Setter Property="Opacity" Value="0.5"/>
<Style.Triggers>
<DataTrigger Binding="{Binding Path=IsSelected,
RelativeSource={RelativeSource AncestorType=ListBoxItem}}"
Value="True">
<Setter Property="Opacity" Value="1"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Border.Style>
</Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
测试DataContext:
DataContext = new List<CountryVm>
{
new CountryVm {Name = "123"},
new CountryVm {Name = "Abc"},
new CountryVm {Name = "Xyz"},
};
结果
【讨论】: