We have a general style in default.xaml, targeting all buttons in our application. Is there a way to override this style, and creating a new button based on the default button?
if you want to inherit any existing style use BasedOn
<Style TargetType="{x:Type Button}" BasedOn="{StaticResource {x:Type Button}}" x:Key="RedTextBasedOnButton"> <Setter Property="Foreground" Value="Red" /> </Style>
this will inherit the default style and new foreground property will apply to the new style
hope this helps.
You can change the Template of the Button like this
<Style x:Key="{x:Type Button}" TargetType="Button">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<Border Padding="10,5,10,5" BorderBrush="Green" BorderThickness="1" CornerRadius="5" Background="#EFEFEF">
<TextBlock Text="{TemplateBinding Content}" />
</Border>
</ControlTemplate>
</Style>
Class Style has property BasedOn and the constructor accepting Style parameter which defines style to be based on.
Style boldStyle = new Style(typeof(Button), generalButtonStyle);
Related
how is it possible to get a space between some custom controls inside a stackpanel? I did it right before with a Textbox, Button, and so on, but i cannot do it with a custom control.
That's the code i've got so far
<Grid>
<StackPanel x:Name="spTasks" CanVerticallyScroll="True">
<StackPanel.Resources>
<Style TargetType="local:SmartTaskOverview">
<Setter Property="Margin" Value="50,50,50,50" />
</Style>
</StackPanel.Resources>
</StackPanel>
</Grid>
Thanks for your help
FrameworkElements and their sub-classes don't just look for a resource using the controls type, they use the value of DefaultStyleKey. It's common practice for most sub-classes of Control (and some other FrameworkElements) to override the default value of this dependency property in the static constructor to be the type of the control, but sub-classes of UserControl usually don't bother.
static Foo()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(Foo), new FrameworkPropertyMetadata(typeof(Foor));
}
If you didn't do this in your SmartTaskOverview then it will be looking for its default style using typeof(UserControl) as the resource key and not typeof(SmartTaskOverview).
Note: The UserControl will require a control template to show its children, this is normally provided by the default style for UserControl but by changing the key it will find your default style instead. To resolve this, just base your style on the UserControl style.
<Style TargetType="local:SmartTaskOverview" BasedOn="{StaticResource {x:Type UserControl}}">
<Setter Property="Margin" Value="50,50,50,50" />
</Style>
Alternatively you could provide a simple template yourself.
<Style TargetType="local:SmartTaskOverview">
<Setter Property="Margin" Value="50,50,50,50" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:SmartTaskOverview}">
<ContentPresenter />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
We have a specific look and feel to buttons in our application and these are defined in a named style for ButtonBase which also happens to be the default style for Button, ToggleButton and RepeatButton.
We also have ToolbarButtons which are derived from ButtonBase and include extra properties such as Text and Icon. These are used to place a specific text and an icon on a ToolbarButton.
The theme for ToolbarButtons is defined as follows in Themes/generic.xaml:
<Style TargetType="{x:Type c:ToolbarButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type c:ToolbarButton}">
<Button Command="{TemplateBinding Property=Command}">
.. controls to place text and icon etc ..
</Button>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
As you can see I'm using a Button control within a control based on ButtonBase and binding the Command to the Command on the contained Button. This hack makes sure that I can override the style of the 'Button' used in the Toolbar by defining the Button default style.
It all seems to work quite well, but it does not feel right using a Button inside a Button. I'm still wondering if I'm doing the right thing. Any ideas?
Your approach is good but you don't have to use a second button in your template, but a ContentPresenter. Use it every time your redefine the template of a ContentControl (a button for example). The BasedOn attribute is useful to override the specific button style.
It looks like this :
<Style TargetType="{x:Type c:ToolbarButton}" BasedOn="{StaticResource {x:Type ButtonBase}}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ToolbarButton}">
<StackPanel>
<!-- Image -->
<Image Source="{TemplateBinding Image}"/>
<!-- Content -->
<ContentPresenter Content="{TemplateBinding Content}"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
You will find the same mechanism with the templates of the ItemsControl (ListBox, ListView, etc) with the ItemsPresenter.
UPDATE:
To take your comment in account, maybe you should override a ContentControl to apply your specific chrome to it:
public class ButtonContentControl : ContentControl { }
<Style TargetType="{x:Type local:ButtonContentControl}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:ButtonContentControl}">
<!-- Specific chrome -->
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
Then you can use it inside the templates of your ButtonBase and your ToolbarButton :
<
Style TargetType="{x:Type ButtonBase}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type c:ToolbarButton}">
<ButtonContentControl>
<!-- ContentPresenter or something else -->
</ButtonContentControl>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style TargetType="{x:Type c:ToolbarButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type c:ToolbarButton}">
<ButtonContentControl>
.. controls to place text and icon etc ..
</ButtonContentControl>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
I'm trying to write a reusable Template for a WPF ItemContainerStyle.
This Template changes the way the TabControl's Item looks.
This template is meant to be used in several places in the application.
In each place it is used I want to be able to pass different parameters to it.
For example: to change the Margin of the Border of the Item:
<Style x:Key="TabItemStyle1" TargetType="{x:Type TabItem}">
<Setter Property="Margin" Value="10,0"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Grid SnapsToDevicePixels="true">
<Border x:Name="Bd" Width="80"
Background="Gray"
Margin="{TemplateBinding Margin}">
<ContentPresenter x:Name="Content"
ContentSource="Header" />
</Border>
</Grid>
<ControlTemplate.Triggers>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
...
<TabControl ItemContainerStyle="{DynamicResource TabItemStyle1}">
In the place where the style is used I Would like to Write something like:
ItemContainerStyle="{DynamicResource TabItemStyle1 Margin='5,0'}"
or
<TabControl Margin="78,51,167,90" ItemContainerStyle="{DynamicResource TabItemStyle1}"
ItemContainerStyle.Margin="5,0">
The motivation is to use this template in different places with different Margins.
Is there a way to do this ?
Thank you
You can do it with attached properties. I wrote a blog post explaining how to do it:
http://www.thomaslevesque.com/2011/10/01/wpf-creating-parameterized-styles-with-attached-properties/
Another option is to use DynamicResource, and redefine the resource in derived styles
OK, I've found a way to do this with dave's help.
The Solution is to create a derived template and set the properties in it.
This way the original template can be reused.
<Style x:Key="TabItemStyle2" TargetType="{x:Type TabItem}"
BasedOn="{StaticResource TabItemStyle1}">
<Style.Setters>
<Setter Property="Margin" Value="40,0"></Setter>
</Style.Setters>
</Style>
And set the TabControl's ItemContainerStyle to the derived style:
<TabControl ItemContainerStyle="{DynamicResource TabItemStyle2}">
In my case I had to change some parameters deep in the applied template (so I couldn't use just a setter).
And I didn't want to code some classes that traverse the visual tree or register an attached property to do the changes.
However, it is possible to define resources within the base style and override these values in the derived definitions. So, with the original example this would look like this:
<Style x:Key="AbsTabItemStyle" TargetType="{x:Type TabItem}">
<!-- Override these default values in derived style definitions -->
<Style.Resources>
<s:Double x:Key="GridBorderMargin">10</s:Double>
<Color x:Key="GridBorderColor">Grey</Color>
</Style.Resources>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Grid SnapsToDevicePixels="true">
<Border x:Name="Bd"
Width="80"
Background="{DynamicResouces GridBorderColor}"
Margin="{DynamicResouces GridBorderMargin}"
>
<ContentPresenter x:Name="Content"
ContentSource="Header" />
</Border>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="BigMarginTabItemStyle" TargetType="{x:Type TabItem}" BasedOn="{StaticResource AbsTabItemStyle}">
<!-- Set different values in this derived style definition -->
<Style.Resources>
<s:Double x:Key="GridBorderMargin">20</s:Double>
</Style.Resources>
</Style>
<Style x:Key="RedTabItemStyle" TargetType="{x:Type TabItem}" BasedOn="{StaticResource AbsTabItemStyle}">
<!-- Set different values in this derived style definition -->
<Style.Resources>
<c:Color x:Key="GridBorderColor">Red</Color>
</Style.Resources>
</Style>
A way of solving it is by adding a Margin property to the objects/ViewModels you want to display and (data)bind to that value in the template.
As far as I know there is no support of parameterized styles/templates.
Is there a way to set the default cursor for a control type at the application level? I'd like to say that all Button controls, regardless of whether or not they have a specific style, have a default cursor of the hand cursor unless it's overridden in that button's individual style specification.
Here's an example of such a button with its own style that I'd like to override the default
<UserControl>
<UserControl.Resources>
<Style x:Key="CloseButtonStyle" TargetType="{x:Type Button}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Grid>
<!-- My button's custom content here -->
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Button x:Name="btnClose" Style="{DynamicResource CloseButtonStyle}"/>
</UserControl>
Put the style below in Application.Resources in your App.xaml file.
<Style TargetType="Button">
<Setter Property="Cursor" Value="Hand"/>
</Style>
UPDATE
In regards to the 3rd comment:
To achieve that, you need to leave just your control template in UserControl.Resources:
<ControlTemplate x:Key="CloseButtonTemplate" TargetType="{x:Type Button}">
<Grid>
<!-- My button's custom content here -->
</Grid>
</ControlTemplate>
Then set Template property for Button:
<Button Template="{DynamicResource CloseButtonTemplate}"/>
I want to use the ExtendedWPFToolkits's ColorPicker but with a custom ButtonStyle.
I can create a new look overriding the Template property of the item but the original templates click event is missing.
I want to keep it, but how?
<Controls:ColorPicker >
<Controls:ColorPicker.ButtonStyle>
<Style TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Button Content="ColorPicker"></Button>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Controls:ColorPicker.ButtonStyle>
</Controls:ColorPicker>
What you have is not valid. You are putting a Button in the ControlTemplate of a ToggleButton, so basically a button in a button.
You'd need to do something like:
<Controls:ColorPicker >
<Controls:ColorPicker.ButtonStyle>
<Style TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<Border Background="Transparent">
<TextBlock Text="ColorPicker" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Controls:ColorPicker.ButtonStyle>
</Controls:ColorPicker>
I added a transparent Border so the button will be able to receive mouse events for areas not covered by the text.