ImageAttributes.SetRemapTable 方法

定义

设置颜色重新映射表。

重载

SetRemapTable(ColorMap[])

为默认类别设置颜色重新映射表。

SetRemapTable(ReadOnlySpan<ColorMap>)
SetRemapTable(ReadOnlySpan<ValueTuple<Color,Color>>)
SetRemapTable(ColorAdjustType, ReadOnlySpan<ColorMap>)
SetRemapTable(ColorAdjustType, ReadOnlySpan<ValueTuple<Color,Color>>)
SetRemapTable(ColorMap[], ColorAdjustType)

为指定类别设置颜色重新映射表。

SetRemapTable(ColorMap[])

Source:
ImageAttributes.cs
Source:
ImageAttributes.cs
Source:
ImageAttributes.cs

为默认类别设置颜色重新映射表。

public:
 void SetRemapTable(cli::array <System::Drawing::Imaging::ColorMap ^> ^ map);
public:
 void SetRemapTable(... cli::array <System::Drawing::Imaging::ColorMap ^> ^ map);
public void SetRemapTable (System.Drawing.Imaging.ColorMap[] map);
public void SetRemapTable (params System.Drawing.Imaging.ColorMap[] map);
member this.SetRemapTable : System.Drawing.Imaging.ColorMap[] -> unit
Public Sub SetRemapTable (map As ColorMap())
Public Sub SetRemapTable (ParamArray map As ColorMap())

参数

map
ColorMap[]

ColorMap 类型的颜色对数组。 每个颜色对包含现有的颜色(第一个值)和它将映射到的颜色(第二个值)。

示例

下面的代码示例旨在与 Windows 窗体 一起使用,它需要 PaintEventArgse,这是事件处理程序的参数Paint。 此代码执行以下操作:

  1. 创建 (红色圆圈) 的图像,将其保存为 Circle2.jpg,打开该图像,并将其绘制到屏幕上。

  2. 创建将红色映射到绿色的颜色映射图。

  3. 将之前创建的图像再次绘制到屏幕,但这次使用颜色贴图。

private:
   void SetRemapTableExample( PaintEventArgs^ e )
   {
      // Create a filled, red image, and save it to Circle2.jpg.
      Bitmap^ myBitmap = gcnew Bitmap( 50,50 );
      Graphics^ g = Graphics::FromImage( myBitmap );
      g->Clear( Color::White );
      g->FillEllipse( gcnew SolidBrush( Color::Red ), Rectangle(0,0,50,50) );
      myBitmap->Save( "Circle2.jpg" );

      // Create an Image object from the Circle2.jpg file, and draw it to
      // the screen.
      Image^ myImage = Image::FromFile( "Circle2.jpg" );
      e->Graphics->DrawImage( myImage, 20, 20 );

      // Create a color map.
      array<ColorMap^>^myColorMap = gcnew array<ColorMap^>(1);
      myColorMap[ 0 ] = gcnew ColorMap;
      myColorMap[ 0 ]->OldColor = Color::Red;
      myColorMap[ 0 ]->NewColor = Color::Green;

      // Create an ImageAttributes object, and then pass the
      // myColorMap object to the SetRemapTable method.
      ImageAttributes^ imageAttr = gcnew ImageAttributes;
      imageAttr->SetRemapTable( myColorMap );

      // Draw the image with the remap table set.
      Rectangle rect = Rectangle(150,20,50,50);
      e->Graphics->DrawImage( myImage, rect, 0, 0, 50, 50, GraphicsUnit::Pixel, imageAttr );
   }
private void SetRemapTableExample(PaintEventArgs e)
{
             
    // Create a filled, red image, and save it to Circle2.jpg.
    Bitmap myBitmap = new Bitmap(50, 50);
    Graphics g = Graphics.FromImage(myBitmap);
    g.Clear(Color.White);
    g.FillEllipse(new SolidBrush(Color.Red),
        new Rectangle(0, 0, 50, 50));
    myBitmap.Save("Circle2.jpg");
             
    // Create an Image object from the Circle2.jpg file, and draw it to
             
    // the screen.
    Image myImage = Image.FromFile("Circle2.jpg");
    e.Graphics.DrawImage(myImage, 20, 20);
             
    // Create a color map.
    ColorMap[] myColorMap = new ColorMap[1];
    myColorMap[0] = new ColorMap();
    myColorMap[0].OldColor = Color.Red;
    myColorMap[0].NewColor = Color.Green;
             
    // Create an ImageAttributes object, and then pass the
   // myColorMap object to the SetRemapTable method.
    ImageAttributes imageAttr = new ImageAttributes();
    imageAttr.SetRemapTable(myColorMap);
             
    // Draw the image with the remap table set.
    Rectangle rect = new Rectangle(150, 20, 50, 50);
    e.Graphics.DrawImage(myImage, rect, 0, 0, 50, 50, 
        GraphicsUnit.Pixel, imageAttr);    
}
Public Sub SetRemapTableExample(ByVal e As PaintEventArgs)

    ' Create a filled, red image and save it to Circle2.jpg.
    Dim myBitmap As New Bitmap(50, 50)
    Dim g As Graphics = Graphics.FromImage(myBitmap)
    g.Clear(Color.White)
    g.FillEllipse(New SolidBrush(Color.Red), New Rectangle(0, 0, _
    50, 50))
    myBitmap.Save("Circle2.jpg")

    ' Create an Image object from the Circle2.jpg file, and draw

    ' it to the screen.
    Dim myImage As Image = Image.FromFile("Circle2.jpg")
    e.Graphics.DrawImage(myImage, 20, 20)

    ' Create a color map.
    Dim myColorMap(0) As ColorMap
    myColorMap(0) = New ColorMap
    myColorMap(0).OldColor = Color.Red
    myColorMap(0).NewColor = Color.Green

    ' Create an ImageAttributes object, and then pass the

    ' myColorMap object to the SetRemapTable method.
    Dim imageAttr As New ImageAttributes
    imageAttr.SetRemapTable(myColorMap)

    ' Draw the image with the remap table set.
    Dim rect As New Rectangle(150, 20, 50, 50)
    e.Graphics.DrawImage(myImage, rect, 0, 0, 50, 50, _
    GraphicsUnit.Pixel, imageAttr)
    ' Image
End Sub

注解

颜色重新映射表是结构的数组 ColorMap 。 每个 ColorMap 结构都有两个 Color 对象:一个指定旧颜色,一个指定相应的新颜色。 在呈现期间,与重新映射表中的一种旧颜色匹配的任何颜色都更改为相应的新颜色。

对象维护五个 ImageAttributes 调整类别的颜色和灰度设置:默认、位图、画笔、笔和文本。 例如,可以为默认类别指定颜色重映射,为位图类别指定颜色重新映射表,为笔类别指定其他颜色重映射表。

默认颜色调整和灰度调整设置适用于没有自己调整设置的所有类别。 例如,如果从未为笔类别指定任何调整设置,则默认设置将应用于笔类别。

适用于

SetRemapTable(ReadOnlySpan<ColorMap>)

Source:
ImageAttributes.cs
public:
 void SetRemapTable(ReadOnlySpan<System::Drawing::Imaging::ColorMap ^> map);
public void SetRemapTable (ReadOnlySpan<System.Drawing.Imaging.ColorMap> map);
member this.SetRemapTable : ReadOnlySpan<System.Drawing.Imaging.ColorMap> -> unit
Public Sub SetRemapTable (map As ReadOnlySpan(Of ColorMap))

参数

适用于

SetRemapTable(ReadOnlySpan<ValueTuple<Color,Color>>)

Source:
ImageAttributes.cs
public:
 void SetRemapTable(ReadOnlySpan<ValueTuple<System::Drawing::Color, System::Drawing::Color>> map);
public void SetRemapTable (ReadOnlySpan<(System.Drawing.Color OldColor, System.Drawing.Color NewColor)> map);
member this.SetRemapTable : ReadOnlySpan<ValueTuple<System.Drawing.Color, System.Drawing.Color>> -> unit
Public Sub SetRemapTable (map As ReadOnlySpan(Of ValueTuple(Of Color, Color)))

参数

适用于

SetRemapTable(ColorAdjustType, ReadOnlySpan<ColorMap>)

Source:
ImageAttributes.cs
public:
 void SetRemapTable(System::Drawing::Imaging::ColorAdjustType type, ReadOnlySpan<System::Drawing::Imaging::ColorMap ^> map);
public void SetRemapTable (System.Drawing.Imaging.ColorAdjustType type, ReadOnlySpan<System.Drawing.Imaging.ColorMap> map);
member this.SetRemapTable : System.Drawing.Imaging.ColorAdjustType * ReadOnlySpan<System.Drawing.Imaging.ColorMap> -> unit
Public Sub SetRemapTable (type As ColorAdjustType, map As ReadOnlySpan(Of ColorMap))

参数

适用于

SetRemapTable(ColorAdjustType, ReadOnlySpan<ValueTuple<Color,Color>>)

Source:
ImageAttributes.cs
public:
 void SetRemapTable(System::Drawing::Imaging::ColorAdjustType type, ReadOnlySpan<ValueTuple<System::Drawing::Color, System::Drawing::Color>> map);
public void SetRemapTable (System.Drawing.Imaging.ColorAdjustType type, ReadOnlySpan<(System.Drawing.Color OldColor, System.Drawing.Color NewColor)> map);
member this.SetRemapTable : System.Drawing.Imaging.ColorAdjustType * ReadOnlySpan<ValueTuple<System.Drawing.Color, System.Drawing.Color>> -> unit
Public Sub SetRemapTable (type As ColorAdjustType, map As ReadOnlySpan(Of ValueTuple(Of Color, Color)))

参数

适用于

SetRemapTable(ColorMap[], ColorAdjustType)

Source:
ImageAttributes.cs
Source:
ImageAttributes.cs
Source:
ImageAttributes.cs

为指定类别设置颜色重新映射表。

public:
 void SetRemapTable(cli::array <System::Drawing::Imaging::ColorMap ^> ^ map, System::Drawing::Imaging::ColorAdjustType type);
public void SetRemapTable (System.Drawing.Imaging.ColorMap[] map, System.Drawing.Imaging.ColorAdjustType type);
member this.SetRemapTable : System.Drawing.Imaging.ColorMap[] * System.Drawing.Imaging.ColorAdjustType -> unit
Public Sub SetRemapTable (map As ColorMap(), type As ColorAdjustType)

参数

map
ColorMap[]

ColorMap 类型的颜色对数组。 每个颜色对包含现有的颜色(第一个值)和它将映射到的颜色(第二个值)。

type
ColorAdjustType

ColorAdjustType 的一个元素,指定将设置颜色重新映射表的类别。

示例

有关代码示例,请参阅 SetRemapTable(ColorMap[]) 方法。

注解

颜色重新映射表是结构的数组 ColorMap 。 每个 ColorMap 结构都有两个 Color 对象:一个指定旧颜色,一个指定相应的新颜色。 在呈现期间,与重新映射表中的一种旧颜色匹配的任何颜色都更改为相应的新颜色。

对象维护五个 ImageAttributes 调整类别的颜色和灰度设置:默认、位图、画笔、笔和文本。 例如,可以为默认类别指定颜色重映射,为位图类别指定颜色重新映射表,为笔类别指定其他颜色重映射表。

默认颜色调整和灰度调整设置适用于没有自己调整设置的所有类别。 例如,如果从未为笔类别指定任何调整设置,则默认设置将应用于笔类别。

为特定类别指定颜色调整或灰度调整设置后,默认调整设置将不再应用于该类别。 例如,假设为默认类别指定调整设置的集合。 如果通过传递给 PenSetRemapTable 方法为笔类别设置颜色重映射表,则默认调整设置都不会应用于笔。

适用于