WPF custom window - wpf

I want to get custom Window like
My code
Height="800" Width="450" WindowStyle="None" ResizeMode="NoResize" Background="Transparent" AllowsTransparency="True">
<Grid>
<Border Background="#FFFFFF" BorderBrush="LightGray" BorderThickness="3" CornerRadius="30 30 30 30">
</Border>
</Grid>
But I don't understand how to change geometry to get that arrow on the top. Can you help me with reference(geometry changing)?


Here is an idea maybe it helps you get the right direction:
<Window x:Class="Test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="450" Width="800"
WindowStyle="None" ResizeMode="NoResize" WindowStartupLocation="CenterScreen"
Background="Transparent" AllowsTransparency="True" SnapsToDevicePixels="True">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Canvas Grid.Row="0" Panel.ZIndex="5" HorizontalAlignment="Center" Height="12.5">
<Polygon Points="15,15 20,15 10,0 0,15" Height="14" Width="20" Fill="White" Stroke="LightGray" StrokeThickness="1"/>
</Canvas>
<Border Grid.Row="1" BorderThickness="1" Background="White" BorderBrush="LightGray" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
</Border>
</Grid>
</Window>


Right answer:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Canvas Grid.Row="0" Panel.ZIndex="1" HorizontalAlignment="Center" Height="12">
<Polygon Points="20,15 10,2 0,15" Height="14" Width="20" Fill="White" Stroke="LightGray" StrokeThickness="2" Canvas.Left="-10"/>
</Canvas>
<Border Grid.Row="1" Background="White" BorderBrush="LightGray" BorderThickness="2" CornerRadius="30 30 30 30">
</Border>
</Grid>

Related

WPF Edges run through rounded Corner

I am trying to make a small window with a background image with rounded corners and blurry glass effect but when i use Rectangle.Fill then i can see from the rectangle, where the rounded corners should be but the image bleeds through. Is there no possibility to cut the image along these corners or something?
<Window x:Class="Weather_window.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:Weather_window"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800"
>
<Grid Margin="0,0,0,-16" Background="Black">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="20"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="20"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="20"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="20"/>
</Grid.RowDefinitions>
<Rectangle x:Name="Shadowshape" Fill="White" Margin="8" Grid.Column="1" Grid.Row="2" Grid.RowSpan="3" Opacity="0">
<Rectangle.Effect>
<DropShadowEffect BlurRadius="8" ShadowDepth="20"/>
</Rectangle.Effect>
</Rectangle>
<Border x:Name="Test" BorderThickness="0" Grid.Column="1" Grid.Row="2" Grid.RowSpan="3" Background="AliceBlue" CornerRadius="25" ClipToBounds="True" Opacity="1">
<Rectangle x:Name="Blur" Margin="0" >
<Rectangle.Fill>
<ImageBrush ImageSource="/Sample.jpeg" Stretch="UniformToFill"/>
</Rectangle.Fill>
<Rectangle.Effect>
<BlurEffect KernelType="Gaussian" Radius="10" />
</Rectangle.Effect>
</Rectangle>
<Border.CacheMode>
<BitmapCache/>
</Border.CacheMode>
</Border>
</Grid>
</Window>

C# WPF If two Rectangles with different background colors overlap completely, the border of the Rectangele below will appear

I use Rectangle and button to do the test, but the results are not the same
I want to overlap two rectangles of different colors, and i don't want see the rectangle below, but this is not the case.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="*"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Grid.Column="1">
<Border>
<Canvas x:Name="Pad">
<Rectangle Height="100"
Width="100"
Fill="Red"
Canvas.Left="10"
ClipToBounds="True"
Canvas.Top="10"
>
</Rectangle>
<Rectangle Height="100"
Width="100"
Fill="White"
Canvas.Left="10"
Canvas.Top="10">
</Rectangle>
</Canvas>
</Border>
</Border>
</Grid>
If I use two buttons to overlap, I will not see the border below. Why is the result of using rectangle and button different ?
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="*"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Grid.Column="1">
<Border>
<Canvas x:Name="Pad">
<Button Height="100"
Width="100"
BorderThickness="0"
Background="Red"
Canvas.Left="10"
ClipToBounds="True"
Canvas.Top="10">
</Button>
<Button Height="100"
Width="100"
Background="White"
BorderThickness="0"
Canvas.Left="10"
Canvas.Top="10">
</Button>
</Canvas>
</Border>
</Border>
</Grid>

I use SnapsToDevicePixels="True" to solve the problem
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="*"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="50"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="50"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Grid.Column="1">
<Border>
<Canvas x:Name="Pad">
<Rectangle Height="100"
Width="100"
Fill="Red"
Canvas.Left="10"
ClipToBounds="False"
SnapsToDevicePixels="True"
Canvas.Top="10">
</Rectangle>
<Rectangle Height="100"
Width="100"
Fill="White"
SnapsToDevicePixels="True"
Canvas.Left="10"
Canvas.Top="10">
</Rectangle>
</Canvas>
</Border>
</Border>
</Grid>
Update
The result after use:

The problem seem to go away if ClipToBounds="False" is set for both Rectangles.

Tab-shaped border needs clipping

I have a spec for an application with three columns where the central one bows in into an inverted tab shape.
I have the basics figured out:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="371*"></ColumnDefinition>
<ColumnDefinition Width="469*"></ColumnDefinition>
<ColumnDefinition Width="371*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid Grid.Column="0">
<Grid.RowDefinitions>
<RowDefinition Height="83*"></RowDefinition>
<RowDefinition Height="309*"></RowDefinition>
<RowDefinition Height="223*"></RowDefinition>
<RowDefinition Height="67*"></RowDefinition>
</Grid.RowDefinitions>
<TextBox Background="Transparent" Grid.Row="0"
Text="Foo" HorizontalAlignment="Center" VerticalAlignment="Center" >
</TextBox>
<Border Grid.Row="0" BorderBrush="Red" BorderThickness="0,0,0,4"></Border>
<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="221*"></RowDefinition>
<RowDefinition Height="171*"></RowDefinition>
<RowDefinition Height="290*"></RowDefinition>
</Grid.RowDefinitions>
<Grid Grid.Row="0">
</Grid>
<Border Grid.Row="0" BorderBrush="Red" BorderThickness="4,0,4,4" CornerRadius="50" >
</Border>
</Grid>
</Grid>
But the inverted tab border is in need of clipping about 60% of the way down. I can of course position an element on top of it but that seems like the wrong solution and I'd like to avoid it.
I've looked at the Border.Clip property but can't quite figure out how to work with it nor find much in the way of documentation. What do I need to do here?

There's a bunch of different ways you can accomplish this, some will be more appropriate for potential resizing considerations than others etc. Here's just a few potential solution examples.
<StackPanel>
<!-- added -->
<Grid Background="LightBlue" Height="100">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="2"/>
<RowDefinition Height="30"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Rectangle Grid.ColumnSpan="3"
Fill="DarkBlue"/>
<Rectangle Grid.Row="1" Grid.ColumnSpan="3"
Fill="Yellow"/>
<Border Grid.Row="1" Grid.RowSpan="2" Grid.Column="1"
Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="2,0,2,2"
CornerRadius="0,0,20,20"/>
</Grid>
<!-//-->
<Grid Background="LightBlue" Height="100">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="30"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Rectangle Grid.ColumnSpan="3"
Fill="DarkBlue"/>
<Rectangle Grid.ColumnSpan="3" VerticalAlignment="Bottom" Height="2"
Fill="Yellow"/>
<Border Grid.Row="1" Grid.RowSpan="2" Grid.Column="1"
Background="DarkBlue" Margin="0,-2,0,0"
BorderBrush="Yellow" BorderThickness="2,0,2,2"
CornerRadius="0,0,20,20"/>
</Grid>
<!-- Or another, or another, or another... -->
<Grid Background="LightBlue" Height="100">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Border Grid.ColumnSpan="3" Height="50"
VerticalAlignment="Top" Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="0,0,0,2"/>
<Border Grid.Column="1" Height="80" CornerRadius="20"
VerticalAlignment="Top" Background="DarkBlue" BorderThickness="2,0,2,2">
<Border.BorderBrush>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="DarkBlue" Offset="0.6"/>
<GradientStop Color="#FFFFFF00" Offset="0.6"/>
</LinearGradientBrush>
</Border.BorderBrush>
</Border>
</Grid>
<Grid Background="LightBlue" Height="100">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Border Grid.Column="1" Height="80" CornerRadius="20"
VerticalAlignment="Top" Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="2,0,2,2"/>
<Border Grid.ColumnSpan="3" Height="50"
VerticalAlignment="Top" Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="0,0,0,2"/>
<Rectangle Grid.Column="1" Height="51" Margin="2,0"
VerticalAlignment="Top" Fill="DarkBlue"/>
</Grid>
<Grid Background="LightBlue" Height="100">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Border Grid.ColumnSpan="3" Height="50"
VerticalAlignment="Top" Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="0,0,0,2"/>
<Border Grid.Column="1" Height="80" CornerRadius="20"
VerticalAlignment="Top" Background="DarkBlue"
BorderBrush="Yellow" BorderThickness="2,0,2,2"
Clip="M0,47.7 L175,47.7 L175,80 L0,80 z"/>
</Grid>
</StackPanel>

CornerRadius has a constructor that can take 4 values for the radius of each corner: top-left, top-right, bottom-right, bottom-left.
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="9*" />
<RowDefinition Height="1*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<TextBox Background="Transparent" Grid.Row="0" Grid.Column="0"
Text="Foo" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Border Grid.Row="1" Grid.Column="1" BorderBrush="Red" BorderThickness="4,0,4,4" CornerRadius="0, 0, 50, 50" />
</Grid>
Another option (probably the one I would choose) is to use a TabControl, put the tab on the bottom and center it.
<TabControl TabStripPlacement="Bottom" Background="DarkBlue" BorderBrush="Yellow" Margin="3" >
<TabControl.Resources>
<Style TargetType="{x:Type TabPanel}">
<Setter Property="HorizontalAlignment" Value="Center" />
</Style>
</TabControl.Resources>
<TabItem Header="Test" Background="DarkBlue" BorderBrush="Yellow" Foreground="Yellow" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<TextBox Grid.Row="1" Text="Foo" />
</Grid>
</TabItem>
</TabControl>

GridSplitter resize in WPF

I've a grid with 3 rows.When I drag down to grid splitter,the grid splitter disappeared.But I need to do "auto" height of the first row.How can I fix this problem?
Here is code:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="20"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackPanel>
<Border Background="BlueViolet" Height="20" Margin="3"/>
<Border Background="BlueViolet" Height="20" Margin="3"/>
<Border Background="BlueViolet" Height="20" Margin="3"/>
<Border Background="BlueViolet" Height="20" Margin="3"/>
<Border Background="BlueViolet" Height="20" Margin="3"/>
</StackPanel>
<GridSplitter Background="White" HorizontalAlignment="Stretch" Grid.Row="1" Height="5"/>
<TextBlock IsHitTestVisible="False" Text="GridSplitter here.." Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<Border Background="CornflowerBlue" Grid.Row="2" Margin="3"/>
</Grid>
Thanks for your help.

Decorating UserControl WPF

I want to decorate some controls in groups like:
<UserControl x:Class="Infrastructure.UI.ItemsGroup" ... >
<Border BorderBrush="Black" BorderThickness="1" CornerRadius="5" Background="Red">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<ContentPresenter Grid.Row="0" />
<TextBlock x:Name="ctrlGroupText" Grid.Row="1" HorizontalAlignment="Center" />
</Grid>
</Border>
</UserControl>
And use it in other XAML-files like:
<Grid Grid.Column="0">
<UI:ItemsGroup GroupText="Hello World">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Button>1111</Button>
<Button>1111</Button>
</Grid>
</UI:ItemsGroup>
</Grid>
But it doesn't work. What did I wrong? :)
Thanks

You need to edit the Template for the UserControl instead of adding the Border as the Child
<UserControl x:Class="Infrastructure.UI.ItemsGroup" ... >
<UserControl.Template>
<ControlTemplate TargetType="{x:Type UserControl}">
<Border BorderBrush="Black" BorderThickness="1" CornerRadius="5" Background="Red">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<ContentPresenter Grid.Row="0" />
<TextBlock x:Name="ctrlGroupText" Grid.Row="1" HorizontalAlignment="Center" />
</Grid>
</Border>
</ControlTemplate>
</UserControl.Template>
</UserControl>
Update
To set the Text for the TextBlock to GroupText you can use a Binding
<TextBlock x:Name="ctrlGroupText"
Text="{Binding RelativeSource={RelativeSource AncestorType={x:Type local:ItemsGroup}},
Path=GroupText}"
Grid.Row="1"
HorizontalAlignment="Center" />

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