I have a StackPanel containing five images and I want to put a black border around each image.
The XAML I have at the moment is:
<Image Name="imgPic1"
Width="100"
Height="75"
Stretch="Fill"
VerticalAlignment="Top" />
I thought I would be just able to put a one-unit margin or padding on the image and set a background color to 000000 but Padding and Background are both invalid for images.
What is an easy way to do this in XAML? Do I really have to put each image inside another control to get a border around it or is there some other trickery I can use?
Simply wrap the Image in a Border control
<Border BorderThickness="1">
<Image Name="imgPic1"
Width="100"
Height="75"
Stretch="Fill"
VerticalAlignment="Top" />
</Border>
You could also provide a style you apply to images that does this if you don't want to do it around every image
Final solution from answer and comments added by Pax:
<Border BorderThickness="1"
BorderBrush="#FF000000"
VerticalAlignment="Top">
<Image Name="imgPic1"
Width="100"
Height="75"
Stretch="Fill"
VerticalAlignment="Top"/>
</Border>
The accepted answer will not work because of the problem described here
https://wpf.2000things.com/2011/04/17/279-adding-a-border-around-an-image-control/
I solved it this way.
<Viewbox>
<Border BorderThickness="3" BorderBrush="Red">
<Image Stretch="None" ></Image>
</Border>
</Viewbox>
I just stumbled upon this post and the other answer did not work right. Maybe because I now use framework 4 and this post is old?
In any case - if someone will see this by chance in the future - here is my answer:
<Border Name="brdSiteLogo"
BorderThickness="2"
BorderBrush="#FF000000"
VerticalAlignment="Top"
HorizontalAlignment="Left"
Margin="12,112,0,0"
Height="128"
Width="128">
<Image Name="imgSiteLogo"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Stretch="Fill"/>
</Border>
The border thickness and brush are important (if you wont choose a color - you will not see the border!!!)
Also, the border should be aligned on your window. The image is "inside" the border, so you can use margins or just stretch it like I did.
Related
I've got the following control template which I use as a Validation.ErrorTemplate for TextBoxes:-
<ControlTemplate x:Key="ControlValidationErrorTemplate">
<DockPanel LastChildFill="True">
<Border Background="Red"
DockPanel.Dock="right"
Padding="2,0,2,0"
ToolTip="{Binding ElementName=valAdorner, Path=AdornedElement.(Validation.Errors), Converter={x:Static val:ValidationErrorsConverter.Instance}}">
<TextBlock Text="!"
VerticalAlignment="center"
HorizontalAlignment="center"
FontWeight="Bold"
Foreground="white" />
</Border>
<AdornedElementPlaceholder x:Name="valAdorner"
VerticalAlignment="Center">
<Border BorderBrush="red"
BorderThickness="1" />
</AdornedElementPlaceholder>
</DockPanel>
</ControlTemplate>
When a TextBox contains invalid content, the above template applies a red border and adds a red box containing an exclamation mark immediately to the right of the TB.
The problem is, the exclamation mark overlaps anything immediately to the right of the TB, rather than the layout changing to accomomodate the exclamation mark. I have a similar problem in DataGrids - the exclamation mark overlaps the right-hand edge of the containing cell, rather than the column width increasing to accommodate it.
Using Snoop, it appears that the template is being displayed in an "adorner layer" which I assume is a separate visual tree? This would explain why the window's layout isn't recalculated to take into account the exclamation mark. Can anyone suggest a way to achieve what I want?
As I suspected, it's due to the error template being rendered on the adorner layer, so it doesn't affect the layout of the window. See: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/9de3c9e5-5759-4f88-9184-175d3eaabdad/
I'm now using this control template instead:-
<ControlTemplate x:Key="ControlValidationErrorTemplate">
<Grid>
<Polygon Points="9,9 9,0 0,0"
Stroke="Red"
StrokeThickness="1"
Fill="Red"
HorizontalAlignment="Right"
VerticalAlignment="Top"
ToolTip="{Binding ElementName=valAdorner, Path=AdornedElement.(Validation.Errors), Converter={x:Static val:ValidationErrorsConverter.Instance}}" />
<AdornedElementPlaceholder x:Name="valAdorner"
VerticalAlignment="Center">
<Border BorderBrush="red"
BorderThickness="1" />
</AdornedElementPlaceholder>
</Grid>
</ControlTemplate>
This draws a red border around the control, with a small red triangle overlapping the top-right corner of the control - hovering over this displays a tooltip containing the error message.
I have a WPF Window with Viewbox. I want one of the child elements of this Viewbox to stay the same size at any screen resolution.
My XAML:
<Viewbox Name="MyMainViewbox" Stretch="Fill">
<Grid Name="MyMainGrid">
<Image Source="Images/bg.bmp" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Stretch="Fill"/>
<Image Name="Thumb1" Source="Images/t1.png" MouseUp="Right_Click" Margin="0, 100, 50, 0" HorizontalAlignment="Right" VerticalAlignment="Stretch" Visibility="Visible"/>
<Image Name="Thumb2" Source="Images/t2.png" MouseUp="Left_Click" Margin="50, 100, 0, 0" HorizontalAlignment="Left" VerticalAlignment="Stretch" Visibility="Visible"/>
<Image Name="CurThumb" Width="640" Height="480" Stretch="UniformToFill" Margin="0, 50, 0, 0" HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Hidden"/>
</Grid>
</Viewbox>
The first 2 images inside the Viewbox are predefined and scaled finely at the different screen resolutions.
My problem is with the 3rd image that gets its source during the runtime and should be of the same exact size at all resolutions. It will contain photos taken at 4x3 aspect ration, and I want them to stay so.
However at 16x9 screen resolutions they are stretched. I have tried to set a fixed size in XAML - it doesn't work. I have tried to set Stretch to None - doesn't work neither. I have tried to rest the sizes of this Image in the code behind - to no avail.
What else can I do to make this third picture unscalable?
It should stay inside the Viewbox for a couple of reasons.
Use two overlapping elements.
<Grid>
<Viewbox>
<Grid>
... scaled images
</Grid>
</Viewbox>
<Grid>
... non scaled images
<Grid>
<Grid>
I am developing an application where i want to browse images like native WindowsPhone form.
I have used Pivot control. Everything works, but there is one unwanted thing. The image does not fill all display area. There is a gap on the top of page. I have set margin and padding everywhere where it is possible. And the result is still the same. :(
Here is my XAML code:
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid
x:Name="LayoutRoot"
Background="Transparent"
Margin="0">
<toolkit:PerformanceProgressBar
VerticalAlignment="Top"
HorizontalAlignment="Left"
IsIndeterminate="{Binding IsBusy}"
Visibility="{Binding IsBusy, Converter={StaticResource BoolToVisibilityConverter}}"
/>
<controls:Pivot
x:Name="PhotoPivot"
ScrollViewer.HorizontalScrollBarVisibility="Auto"
IsHitTestVisible="True"
ItemsSource="{Binding Photos}"
Margin="0"
Padding="0"
>
<controls:Pivot.HeaderTemplate>
<DataTemplate/>
</controls:Pivot.HeaderTemplate>
<controls:Pivot.ItemTemplate>
<DataTemplate >
<controls:PivotItem
x:Name="PhotoPivotItem"
Margin="0"
>
<Image
x:Name="PhotoPicture"
Source="{Binding}"
Stretch="Uniform"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
Margin="0"
/>
</controls:PivotItem>
</DataTemplate>
</controls:Pivot.ItemTemplate>
</controls:Pivot>
</Grid>
Are you talking about the system tray?
To remove the system tray use the following code:
shell:SystemTray.IsVisible="False"
Update:
I'm not real sure why that extra space is there.
I created a simplified version of your example and the only thing I could think of is to use negative margins. There is probably a better solution that I am just overlooking, but for now you can just use the following:
<controls:PivotItem x:Name="PhotoPivotItem" Margin="0,-10,0,0">
Although, from your posted image, it looks as if you have a bigger gap than I did, so you might need to decrease the margin.
Is there a way to put a clipping path on an ImageBrush in Silverlight (not an Image)? I don't see it available from Intellisense, but I'm wondering if there may be a way to do this.
Yet another unpopular "No" answer. The answer is: there is isn't a way to do this.
One possible work around if its vital to create such a brush might be to use a WriteableBitmap. Render an Image using the original source plus the Clip onto a WriteableBitmap then use it as the source to an ImageBrush.
Maybe this will help
I had a problem with an ImageBrush and a Border with a CornerRadius. I couldn't get the Image to fill/clip to fit. I resolved it by moving the ImageBrush to the content of the Border.
Here's the original with the problem:
<Border CornerRadius="0,0,4,4" BorderThickness="0">
<Border.Background>
<ImageBrush ImageSource="/SLTest;component/Resources/background_image.png" Opacity="1" Stretch="UniformToFill" />
</Border.Background>
<ListBox x:Name="lbiMesages"
Opacity="1" BorderThickness="0"
IsHitTestVisible="False"
ItemContainerStyle="{StaticResource ListBoxItemStyle1}"
>
Here's the working version:
<ListBox x:Name="lbiMessages"
Opacity="1" BorderThickness="0"
IsHitTestVisible="False"
ItemContainerStyle="{StaticResource ListBoxItemStyle1}"
>
<ListBox.Template>
<ControlTemplate>
<Border CornerRadius="0,0,4,4" BorderThickness="0">
<Border.Background>
<ImageBrush ImageSource="/SLTest;component/Resources/background_image.png" Opacity="1" Stretch="UniformToFill" />
</Border.Background>
...
</Border>
</ControlTemplate>
Please pardon my ignorance- I'm very new to WPF.
I am looking to implement a minor, visual effect in my application that gives the look of "inner" rounded corners. The window in question has a dark border that encapsulates several UIElements, one of which is a StatusBar, located at the bottom of the window. This StatusBar has a dark background that matches the window's border. Above the StatusBar is a content view, which is currently a Grid- its background is semi-transparent (I think that this is something of a constraint- you can see through the content view to the desktop below). I would like for the content view (represented by the transparent, inner area in the figure below) to have the look of rounded corners, though I expect to have to sort of create the illusion myself.
(Can't post the image because I'm a lurker and not a poster- please find the drawing here)
My first approach was to add a Rectangle (filled with the same, dark color as the border) immediately above the StatusBar and to assign a Border with rounded corners to its OpacityMask (similar to the solution proposed by Chris Cavanagh**). Sadly, the effect that is produced is the exact opposite of that which I am trying to achieve.
I understand that the Clip property can be of use in this sort of situation, but it seems to me that using any sort of Geometry will prove to be inadequate as it won't be dynamically sized to the region in which it resides.
EDIT: Including my XAML:
<Grid Background="{StaticResource ClientBg}" Tag="{Binding OverlayVisible}" Style="{StaticResource mainGridStyle}">
<DockPanel LastChildFill="True">
<!-- Translates to a StackPanel with a Menu and a Button -->
<local:FileMenuView DockPanel.Dock="Top" />
<!-- Translates to a StatusBar -->
<local:StatusView DockPanel.Dock="Bottom" />
<!-- Translates to a Grid -->
<local:ContentView />
</DockPanel>
</Grid>
Any pointers are more than welcome- I'm ready to provide more indepth detail if necessary.
** http://www.dotnetkicks.com/wpf/WPF_easy_rounded_corners_for_anything
EDIT: Now I got what you mean. In fact you can use Path + OpacityMask approach. You have to draw "inverted" path, to use it as opacity mask. But I have simpler and faster solution for you :). Use Border + CornerRadius, and fill the gaps with solid paths. Just try the following code in Kaxaml and let me know if this is what you were looking for:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="240"
Height="320"
AllowsTransparency="True"
Background="Transparent"
WindowStyle="None">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="24"/>
<RowDefinition Height="*"/>
<RowDefinition Height="24"/>
</Grid.RowDefinitions>
<Border Background="Black"/>
<Border Grid.Row="1" BorderBrush="Black" BorderThickness="5">
<Grid>
<Border Background="White" CornerRadius="0, 0, 5, 5" Opacity="0.7"/>
<Path
Width="15"
Height="15"
HorizontalAlignment="Left"
VerticalAlignment="Bottom"
Data="M10,10 L5,10 L5,5 C4.999,8.343 6.656,10 10,10 z"
Fill="Black"
Stretch="Fill"/>
<Path
Width="15"
Height="15"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Data="M10,10 L5,10 L5,5 C4.999,8.343 6.656,10 10,10 z"
Fill="Black"
Stretch="Fill">
<Path.RenderTransform>
<TransformGroup>
<ScaleTransform ScaleX="-1"/>
<TranslateTransform X="15"/>
</TransformGroup>
</Path.RenderTransform>
</Path>
</Grid>
</Border>
<Border Grid.Row="2" Background="Black"/>
</Grid>
</Window>
PS: You can simplify this solution by avoiding render transforms, but you got the idea.