我想在点击时减轻按钮背景。所以我做了以下事情：
<converter:ColorLightConverter x:Key="colorLightConverter" />
...
<Style BasedOn="{StaticResource default}" TargetType="{x:Type controls:Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type controls:Button}">
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background">
<Setter.Value>
<SolidColorBrush Color="{Binding Path=Background.Color, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource colorLightConverter}}" />
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
<Border Background="{TemplateBinding Background}"
BorderBrush="Transparent"
BorderThickness="0">
...
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
转换器：
class ColorLightConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Color color = (Color)value;
System.Drawing.Color lightColor = ControlPaint.Light(System.Drawing.Color.FromArgb(color.A, color.R, color.G, color.B));
return Color.FromArgb(lightColor.A, lightColor.R, lightColor.G, lightColor.B);
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
但是当我单击按钮时不会调用转换器。我认为绑定有什么问题，但是我看不到错误...
你能帮助我吗？
也许我完全错了。我基本上想做的事情：单击按钮时，取当前背景颜色并使其变亮。不多...
更新1：
我尝试了以下方法：
稍微改变了绑定：
<Trigger Property="IsPressed" Value="True">
<Setter Property="Background" Value="{Binding Path=Background.Color, RelativeSource={RelativeSource Self}, Converter={StaticResource colorLightConverter}}" />
</Trigger>
更改了转换器（现在它返回一个 SolidColorBrush）：
class ColorLightConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Color color = (Color)value;
System.Drawing.Color lightColor = ControlPaint.Light(System.Drawing.Color.FromArgb(color.A, color.R, color.G, color.B));
return new SolidColorBrush(Color.FromArgb(lightColor.A, lightColor.R, lightColor.G, lightColor.B));
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}
现在调用了转换器，但是一次又一次的调用，所以几秒后就抛出了stackoverflow异常。这个无限循环从何而来？我现在真的有点迷茫……