When the trigger is on, the Foreground property changes, but the StrokeThickness property does not. Why is this happening?
<Style TargetType="{x:Type controls:EdgeControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type controls:EdgeControl}">
<Grid>
<Path Stroke="{TemplateBinding Foreground}"
StrokeThickness="2" MinWidth="1" MinHeight="1"
x:Name="PART_edgePath"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="controls:HighlightBehaviour.Highlighted" Value="True">
<Setter Property="StrokeThickness" Value="5"/>
<Setter Property="Foreground" Value="Gold"/>
</Trigger>
</Style.Triggers>
</Style>
Related
I have resource dictionary for my radio button which adds textbox to it. I want to add trigger which adds left margin to this textbox but I don't know how to reference it
I marked place where I want to add reference
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Style BasedOn="{StaticResource {x:Type ToggleButton}}"
TargetType="{x:Type RadioButton}"
x:Key="MenuButtonTheme">
<Style.Setters>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="RadioButton">
<Grid VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
Background="{TemplateBinding Background}">
<TextBlock Text="{TemplateBinding Property=Content}"
VerticalAlignment="Center"
Margin="20,0,0,0">
</TextBlock>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="Background" Value="Transparent"></Setter>
<Setter Property="BorderThickness" Value="0"></Setter>
</Style.Setters>
<Style.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Margin" Value="30,0,0,0"></Setter> <!-- Reference TextBlock here -->
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" Value="#424549"></Setter>
</Trigger>
</Style.Triggers>
</Style>
</ResourceDictionary>
You need to set triggers not in Style, but in ControlTemplate. Then you can refer to template elements by name:
<ControlTemplate TargetType="RadioButton">
<Grid x:Name="PART_Main" VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
Background="{TemplateBinding Background}">
<TextBlock x:Name="PART_TBlock"
Text="{TemplateBinding Property=Content}"
VerticalAlignment="Center"
Margin="20,0,0,0"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="True">
<Setter TargetName="PART_TBlock" Property="Margin" Value="30,0,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="PART_Main" Property="Background" Value="#424549"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
I have a button with an undo image inside it.
I want the button to make the border appear when user clicks (ispressed) the button.
<Button Margin="0,7,12,0" HorizontalAlignment="Right" Height="20" Width="23">
<Button.Style>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="White"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter Property="BorderThickness" Value="1"/>
</Trigger>
<Trigger Property="IsPressed" Value="False">
<Setter Property="BorderThickness" Value="0"/>
</Trigger>
</Style.Triggers>
</Style>
</Button.Style>
<Image Grid.Column="0" Grid.Row="0" Margin="0,0,0,0" Height="20" Width="20" Source="/Images/Undo.png">
<Image.Style>
<Style TargetType="Image">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Opacity" Value="0.7"/>
</Trigger>
</Style.Triggers>
</Style>
</Image.Style>
</Image>
</Button>
But its not working at all.
Any help will be appreciated!
I did the following changes to your style: 1) moved triggers within ControlTemplate; 2) assigned x:Name to Border so it can be referenced in the trigger; 3) defined BorderBrush.
<Button Margin="0" HorizontalAlignment="Center" Height="25" Width="75" VerticalAlignment="Center">
<Button.Style>
<Style TargetType="{x:Type Button}">
<Setter Property="Background" Value="White"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="b0" Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter Property="BorderThickness" TargetName="b0" Value="1"/>
<Setter Property="BorderBrush" TargetName="b0" Value="Blue"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Button.Style>
<Image Grid.Column="0" Grid.Row="0" Margin="0,0,0,0" Height="20" Width="20" Source="/Images/Undo.jpg">
<Image.Style>
<Style TargetType="Image">
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Opacity" Value="0.7"/>
</Trigger>
</Style.Triggers>
</Style>
</Image.Style>
</Image>
</Button>
It's not working because the button template sets the border thickness to 1 directly, ignoring the border thickness attribute of the button element itself. You're successfully changing a value that isn't used.
You will have to copy and modify the button template if you want to change the border thickness.
I have a simple DataGrid where I want to Style the selected row and center the text. I have tried the following and it does not work:
<DataGrid.CellStyle>
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" />
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" Value="Blue" />
<Setter Property="Foreground" Value="White" />
</Trigger>
</Style.Triggers>
</Style>
</DataGrid.CellStyle>
Why will the above not work together? If I remove the trigger, it will center but the color I want will not be used.
Try add Grid to the ControlTemplate of DataGridCell style:
<Style TargetType="{x:Type DataGridCell}">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type DataGridCell}">
<Grid Background="{TemplateBinding Background}">
<ContentPresenter Margin="2"
VerticalAlignment="Center"
HorizontalAlignment="Center" />
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="Foreground" Value="White" />
<Setter Property="Background" Value="Blue" />
</Trigger>
</Style.Triggers>
</Style>
Here is my XAML:
<Style x:Key="ExpanderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="IsEnabled" Value="True" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image Source="/Images/SHCalendarLeftArrow.tiff" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
So how can I add a Trigger to that OnMouseOver the image in the ControlTemplate changes to a different image.
Try using a Trigger inside your template:
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Image x:Name="PART_img" Source="/Images/SHCalendarLeftArrow.tiff" />
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="PART_img"
Property="Source"
Value="/Images/SomeOtherImage.tiff" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
I've been recently playing with WPF and I've come across a number of problems that I can't solve. I have the following code in my generic.xaml:
<Style TargetType="{x:Type local:ClearButton}">
<Style.Resources>
<con:ValueConverter x:Key="converter" />
</Style.Resources>
<Setter Property="Width" Value="20" />
<Setter Property="Height" Value="20" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ClearButton}">
<Grid>
<Image Width="{TemplateBinding Width}" Height="{TemplateBinding Height}">
<Image.Style>
<Style TargetType="{x:Type Image}">
<Setter Property="Source" Value="/WPF-Libraries;component/Resources/ClearEnabled.png" />
<Style.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BitmapEffect">
<Setter.Value>
<OuterGlowBitmapEffect Opacity="0.5" GlowColor="Red" GlowSize="3" />
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Source"
Value="/WPF-Libraries;component/Resources/ClearDisabled.png" />
</Trigger>
<!--Binding #1-->
<Trigger Property="{TemplateBinding local:ClearButton.IsPressed}" Value="True">
<Setter Property="RenderTransform">
<Setter.Value>
<!--Binding #2-->
<ScaleTransform CenterX="CONVERTER BINDING:PASS WIDTH TO CONVERTER" CenterY="CONVERTER BINDING:PASS HEIGHT TO CONVERTER" ScaleX="0.75" ScaleY="0.75" />
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
</Image.Style>
</Image>
<Border Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}">
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I can't get Binding #1 to work. I want to bind the trigger to the IsPressed property of the button, what should the binding be? Also what should the binding be for Binding #2 if I want to pass the button's Width and Height to the converter?
Also I could set the trigger this way instead:
<Style TargetType="{x:Type local:ClearButton}">
<Style.Resources>
<con:ValueConverter x:Key="converter" />
</Style.Resources>
<Setter Property="Width" Value="20" />
<Setter Property="Height" Value="20" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ClearButton}">
<!--Abbreviated-->
</ControlTemplate>
</Setter.Value>
</Setter>
<Style.Triggers>
<!--Binding #1-->
<Trigger Property="{TemplateBinding local:ClearButton.IsPressed}" Value="True">
<Setter Property="RenderTransform">
<Setter.Value>
<!--Binding #2-->
<ScaleTransform CenterX="CONVERTER BINDING" CenterY="CONVERTER BINDING" ScaleX="0.75" ScaleY="0.75" />
</Setter.Value>
</Setter>
</Trigger>
</Style.Triggers>
</Style>
Which one is better and what would the binding be for Binding #1 and #2?
Both approaches are a little bit off. Your first approach is struggling to reach the IsPressed property using binding, however the Property property of the Trigger object is not a DependencyProperty so it doesn't support binding.
Your second approach is closer to the mark but still wrong, again uses binding on the Property property of the Trigger.
Check this out instead:
<Style TargetType="Button" x:Key="ClearButtonStyle">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Grid>
<TextBlock
Name="x"
Text="I will change my color when ou press me"
TextAlignment="Center"
VerticalAlignment="Center"
Foreground="Red"
TextWrapping="Wrap"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsPressed" Value="True">
<Setter
TargetName="x"
Property="Foreground"
Value="Green"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Notice that I put the trigger logic on the control template level (specifying the target element), not on the individual element (the TextBlock in this case).