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Como arredondar os cantos de um RectangleGeometry

  • Artigo

Para arredondar os cantos de um , defina suas RadiusX propriedades e RadiusY para um RectangleGeometryvalor maior que zero. Quanto maiores os valores, mais arredondados os cantos do retângulo.

Exemplo

O exemplo a seguir mostra vários RectangleGeometry objetos com configurações e RadiusY diferentesRadiusX. Os RectangleGeometry objetos são exibidos usando Path elementos .

<Page
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="GeoOvwSample.RectangleGeometryRoundedCornerExample">

  <Page.Resources>
  
    <!-- Create a grid background to highlight the
         coordinate system. -->
    <DrawingBrush x:Key="GridDrawingBrushResource" 
      Viewport="0,0,10,10" 
      ViewportUnits="Absolute" TileMode="Tile">
      <DrawingBrush.Drawing>
        <DrawingGroup>
          <DrawingGroup.Children>
            <GeometryDrawing Brush="White">
              <GeometryDrawing.Geometry>
                <RectangleGeometry Rect="0,0,1,1" />
              </GeometryDrawing.Geometry>
            </GeometryDrawing>
            <GeometryDrawing Geometry="M0,0 L1,0 1,0.1, 0,0.1Z" Brush="#CCCCFF" />
            <GeometryDrawing Geometry="M0,0 L0,1 0.1,1, 0.1,0Z" Brush="#CCCCFF" />
          </DrawingGroup.Children>
        </DrawingGroup>
      </DrawingBrush.Drawing>
    </DrawingBrush>

    <!-- Create a graph paper style border to frame the rectangles. -->
    <Style x:Key="GraphPaperBorderStyle" TargetType="{x:Type Border}">
      <Setter Property="HorizontalAlignment" Value="Left" />
      <Setter Property="Background" 
        Value="{StaticResource GridDrawingBrushResource}" />
      <Setter Property="BorderBrush" Value="Black" />
      <Setter Property="BorderThickness" Value="1" />
      <Setter Property="Margin" Value="10" />
      <Setter Property="Width" Value="190" />
      <Setter Property="Height" Value="90" />
    </Style>
  </Page.Resources>

  <StackPanel Name="MainStackPanel">

    <Border Style="{StaticResource GraphPaperBorderStyle}">
      <Path Stroke="Black" 
        StrokeThickness="1"
        Fill="#99CCCCFF">
        <Path.Data>

          <!-- Create a rectangle without rounded corners.  -->
          <RectangleGeometry
            Rect="20,20,150,50"  />
        </Path.Data>
      </Path>
    </Border>

    <Border Style="{StaticResource GraphPaperBorderStyle}">
      <Path Stroke="Black" 
        StrokeThickness="1"
        Fill="#99CCCCFF">
        <Path.Data>

          <!-- Create a rectangle with rounded corners
             by giving the RectangleGeometry a RadiusX
             and a RadiusY of 10.  -->
          <RectangleGeometry
            Rect="20,20,150,50" RadiusX="10" RadiusY="10" />
        </Path.Data>
      </Path>
    </Border>

    <Border Style="{StaticResource GraphPaperBorderStyle}" >
      <Path Stroke="Black" 
        StrokeThickness="1"
        Fill="#99CCCCFF">
        <Path.Data>

          <!-- Set RadiusX and RadiusY to their maximum values 
             (half the rectangle's width and 
              half the rectangle's height).  -->
          <RectangleGeometry
            Rect="20,20,150,50" RadiusX="75" RadiusY="25"  />
        </Path.Data>
      </Path>
    </Border>

  </StackPanel>
</Page>

Rectangles with different RadiusX/RadiusY settings
Retângulos com cantos arredondados

Confira também