GradientBrush.SpreadMethod 属性

定义

命名空间:

System.Windows.Media

程序集:

PresentationCore.dll

获取或设置涂抹方法的类型，该方法指定如何绘制出在要绘画的对象的边界内起始或结束的渐变效果。

public:
 property System::Windows::Media::GradientSpreadMethod SpreadMethod { System::Windows::Media::GradientSpreadMethod get(); void set(System::Windows::Media::GradientSpreadMethod value); };

public System.Windows.Media.GradientSpreadMethod SpreadMethod { get; set; }

member this.SpreadMethod : System.Windows.Media.GradientSpreadMethod with get, set

Public Property SpreadMethod As GradientSpreadMethod

属性值

GradientSpreadMethod

用于绘制渐变的扩展方法的类型。 默认值为 Pad。

示例

以下示例将不同的 SpreadMethod 设置应用于多个 LinearGradientBrush 和 RadialGradientBrush 对象。

<Page 
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
  Title="Gradient Spread Methods">
  <StackPanel>

    <!-- The following three examples show the different gradient spread methods
         applied to linear gradient brushes. -->
    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Pad -->
        <LinearGradientBrush StartPoint="0.3,0.5" EndPoint="0.7,0.5" SpreadMethod="Pad">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </LinearGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Reflect -->
        <LinearGradientBrush StartPoint="0.3,0.5" EndPoint="0.7,0.5" SpreadMethod="Reflect">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </LinearGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Repeat -->
        <LinearGradientBrush StartPoint="0.3,0.5" EndPoint="0.7,0.5" SpreadMethod="Repeat">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </LinearGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

    <!-- The following three examples show the different gradient spread methods
         applied to radial gradient brushes. -->
    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Pad -->
        <RadialGradientBrush Center="0.5,0.5" RadiusX="0.3" RadiusY="0.3" SpreadMethod="Pad">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </RadialGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Reflect -->
        <RadialGradientBrush Center="0.5,0.5" RadiusX="0.3" RadiusY="0.3" SpreadMethod="Reflect">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </RadialGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

    <Rectangle Width="150" Height="75" Stroke="Black">
      <Rectangle.Fill>

        <!-- Repeat -->
        <RadialGradientBrush Center="0.5,0.5" RadiusX="0.3" RadiusY="0.3" SpreadMethod="Repeat">
          <GradientStop Color="White" Offset="0" />
          <GradientStop Color="#333333" Offset="1" />
        </RadialGradientBrush>
      </Rectangle.Fill>
    </Rectangle>

  </StackPanel>
</Page>

注解

下图显示了可用的传播方法及其对 LinearGradientBrush 和 RadialGradientBrush的影响。 红线指示渐变空间。 定义 LinearGradientBrush 其 StartPoint 渐变空间及其属性 EndPoint 。 一个 RadialGradientBrush 定义其渐变空间及其 Center属性 RadiusX和 RadiusY 属性。

渐变分布方法

依赖项属性信息

标识符字段	SpreadMethodProperty
元数据属性设置为 true	无

另请参阅

• GradientStop
• LinearGradientBrush
• RadialGradientBrush