题
我已经编辑的标准分组框中模板因为我想定制它。除了其他自定义,我想组框标题在中心,而不是左或右地Horizantally对齐。报头的对准不是问题但是,真正的问题是在边界管制定义的OpacityMask。不透明掩模设置组框标头,其中的边界没有按后面的透明空间。我还没有能够弄清楚如何放置组框中标题的后面透明空间/间隙当我设置报头到中心。
下面是如何我的XAML看起来像:(请导航到部分用“Border.OpacityMask”,其设置在透明间隙在边界周围的报头开始)
<ControlTemplate x:Key="GroupBoxControlTemplate1" TargetType="{x:Type GroupBox}">
<Grid SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="6"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="6"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="6"/>
</Grid.RowDefinitions>
<Border Background="{TemplateBinding Background}" BorderBrush="Transparent"
BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="4" Grid.Column="1 " Grid.ColumnSpan="4"
Grid.Row="1" Grid.RowSpan="3" HorizontalAlignment="Stretch"/>
<Border x:Name="Header" Grid.Column="2" Grid.RowSpan="2" HorizontalAlignment="Left"
Padding="3,1,3,0" VerticalAlignment="Stretch">
<Border.Effect>
<DropShadowEffect BlurRadius="10" Direction="334"/>
</Border.Effect>
<ContentPresenter SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Content="{TemplateBinding Header}"
ContentSource="Header"
ContentStringFormat="{TemplateBinding HeaderStringFormat}"
ContentTemplate="{TemplateBinding HeaderTemplate}"
RecognizesAccessKey="True" Height="Auto"
VerticalAlignment="Center"
HorizontalAlignment="Center"
OpacityMask="#FF3844BD" Margin="0,1,0,0">
</ContentPresenter>
</Border>
<ContentPresenter Margin="{TemplateBinding Padding}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Content="{TemplateBinding Content}"
ContentStringFormat="{TemplateBinding ContentStringFormat}"
ContentTemplate="{TemplateBinding ContentTemplate}"
Grid.Column="1" Grid.ColumnSpan="2" Grid.Row="2"/>
<Border BorderBrush="White" BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="4" Grid.ColumnSpan="3" Grid.Row="1" Grid.RowSpan="3" RenderTransformOrigin="0.5,0.5" Margin="0">
<Border.OpacityMask>
<MultiBinding ConverterParameter="7" UpdateSourceTrigger="Default">
<MultiBinding.Converter>
<BorderGapMaskConverter/>
</MultiBinding.Converter>
<Binding Path="ActualWidth" ElementName="Header"/>
<Binding Path="ActualWidth" RelativeSource="{RelativeSource Self}"/>
<Binding Path="ActualHeight" RelativeSource="{RelativeSource Self}"/>
</MultiBinding>
</Border.OpacityMask>
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="4">
<Border BorderBrush="White" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="4"/>
</Border>
</Border>
</Grid>
非常感谢您的帮助提前。
-Wajahat
解决方案
我不得不做类似的事情,前一段时间,我想创建带有两个头(一个在左边,一个在右边)一组框。我只是用反射来获取BorderGapMaskConverter
的代码,并修改它来创建自己的转换器。你也许可以做同样的在这里。
编辑:我修改转换器使其对居中头工作
这里的ControlTemplate
<ControlTemplate TargetType="{x:Type GroupBox}">
<Grid SnapsToDevicePixels="true">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="6"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="6"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="6"/>
</Grid.RowDefinitions>
<Border CornerRadius="4"
Grid.Row="1"
Grid.RowSpan="3"
Grid.Column="0"
Grid.ColumnSpan="5"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="Transparent"
Background="{TemplateBinding Background}"/>
<Border x:Name="Header"
Padding="3,1,3,0"
Grid.Row="0"
Grid.RowSpan="2"
Grid.Column="2">
<ContentPresenter ContentSource="Header"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</Border>
<ContentPresenter Grid.Row="2"
Grid.Column="1"
Grid.ColumnSpan="3"
Margin="{TemplateBinding Padding}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<Border CornerRadius="4"
Grid.Row="1"
Grid.RowSpan="3"
Grid.ColumnSpan="5"
BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="White">
<Border.OpacityMask>
<MultiBinding Converter="{StaticResource CenterBorderGapMaskConverter}">
<Binding ElementName="Header"
Path="ActualWidth"/>
<Binding RelativeSource="{RelativeSource Self}"
Path="ActualWidth"/>
<Binding RelativeSource="{RelativeSource Self}"
Path="ActualHeight"/>
</MultiBinding>
</Border.OpacityMask>
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="{TemplateBinding BorderBrush}"
CornerRadius="3">
<Border BorderThickness="{TemplateBinding BorderThickness}"
BorderBrush="White"
CornerRadius="2"/>
</Border>
</Border>
</Grid>
</ControlTemplate>
和这里的转换器:
class CenterBorderGapMaskConverter : IMultiValueConverter
{
// Methods
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
Type type = typeof(double);
if (values == null
|| values.Length != 3
|| values[0] == null
|| values[1] == null
|| values[2] == null
|| !type.IsAssignableFrom(values[0].GetType())
|| !type.IsAssignableFrom(values[1].GetType())
|| !type.IsAssignableFrom(values[2].GetType()))
{
return DependencyProperty.UnsetValue;
}
double pixels = (double)values[0];
double width = (double)values[1];
double height = (double)values[2];
if ((width == 0.0) || (height == 0.0))
{
return null;
}
Grid visual = new Grid();
visual.Width = width;
visual.Height = height;
ColumnDefinition colDefinition1 = new ColumnDefinition();
ColumnDefinition colDefinition2 = new ColumnDefinition();
ColumnDefinition colDefinition3 = new ColumnDefinition();
colDefinition1.Width = new GridLength(1.0, GridUnitType.Star);
colDefinition2.Width = new GridLength(pixels);
colDefinition3.Width = new GridLength(1.0, GridUnitType.Star);
visual.ColumnDefinitions.Add(colDefinition1);
visual.ColumnDefinitions.Add(colDefinition2);
visual.ColumnDefinitions.Add(colDefinition3);
RowDefinition rowDefinition1 = new RowDefinition();
RowDefinition rowDefinition2 = new RowDefinition();
rowDefinition1.Height = new GridLength(height / 2.0);
rowDefinition2.Height = new GridLength(1.0, GridUnitType.Star);
visual.RowDefinitions.Add(rowDefinition1);
visual.RowDefinitions.Add(rowDefinition2);
Rectangle rectangle1 = new Rectangle();
Rectangle rectangle2 = new Rectangle();
Rectangle rectangle3 = new Rectangle();
rectangle1.Fill = Brushes.Black;
rectangle2.Fill = Brushes.Black;
rectangle3.Fill = Brushes.Black;
Grid.SetRowSpan(rectangle1, 2);
Grid.SetRow(rectangle1, 0);
Grid.SetColumn(rectangle1, 0);
Grid.SetRow(rectangle2, 1);
Grid.SetColumn(rectangle2, 1);
Grid.SetRowSpan(rectangle3, 2);
Grid.SetRow(rectangle3, 0);
Grid.SetColumn(rectangle3, 2);
visual.Children.Add(rectangle1);
visual.Children.Add(rectangle2);
visual.Children.Add(rectangle3);
return new VisualBrush(visual);
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
return new object[] { Binding.DoNothing };
}
}
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