ImageAttributes

ImageAttributes disposable

System.Drawing.Imaging (system.drawing.dll) sealed class

This class is used to set various color -manipulation effects when rendering on a graphics surface. You can pass an ImageAttributes object to the System.Drawing.Graphics.DrawImage() and System.Drawing.Graphics.EnumerateMetafile()

There are two methods to remap colors using a ColorMap : SetBrushRemapTable() and SetRemapTable() . You can apply a ColorMatrix using the SetColorMatrix() method. If you want to set separate matrixes for the color and grayscale parts of an image, you can use the SetColorMatrices() variant. SetThreshold() applies a bi-level threshold to the image (everything below the threshold is clamped to 0, and everything above is clamped to the maximum representable value). You can control the gamma with SetGamma() .

You can enable basic color keying with SetColorKey() . This allows you to set a range of colors that will be rendered as transparent, allowing the background to show through.

The SetOutputChannel() allows you to limit the image rendered to one or more of the CMYK channels (as listed in the ColorChannelFlag enumeration). This allows you to perform basic color separations for printing. SetOutputChannelColorProfile() allows you to choose a color-match profile file for the CMYK conversion, to better match the characteristics of the target output device. Installed color profiles are found in the %SystemRoot%\System32\Spool\Drivers\Color\ directory, and the system will look in here for the filename you specify. If the profile file is not installed in that directory, you have to specify a fully qualified filename.

Each of these methods prefixed by "Set" can be made to apply to any and all the GDI+ object types specified in the ColorAdjustType enumeration. There is also an equivalent Clear.. . method to remove the specified color transform. You can also use the SetNoOp() method to disable all color transforms for a particular ColorAdjustType .

 public sealed class  ImageAttributes  : ICloneable, IDisposable {  // Public Constructors  public  ImageAttributes  ();  // Public Instance Methods  public void  ClearBrushRemapTable  ();    public void  ClearColorKey  ();    public void  ClearColorKey  (ColorAdjustType  type  );    public void  ClearColorMatrix  ();    public void  ClearColorMatrix  (ColorAdjustType  type  );    public void  ClearGamma  ();    public void  ClearGamma  (ColorAdjustType  type  );    public void  ClearNoOp  ();    public void  ClearNoOp  (ColorAdjustType  type  );    public void  ClearOutputChannel  ();    public void  ClearOutputChannel  (ColorAdjustType  type  );    public void  ClearOutputChannelColorProfile  ();    public void  ClearOutputChannelColorProfile  (ColorAdjustType  type  );    public void  ClearRemapTable  ();    public void  ClearRemapTable  (ColorAdjustType  type  );    public void  ClearThreshold  ();    public void  ClearThreshold  (ColorAdjustType  type  );    public object  Clone  ();  // implements ICloneable  public void  Dispose  ();  // implements IDisposable  public void  GetAdjustedPalette  (ColorPalette  palette  , ColorAdjustType  type  );    public void  SetBrushRemapTable  (ColorMap[ ]  map  );    public void  SetColorKey  (System.Drawing.Color  colorLow  , System.Drawing.Color  colorHigh  );    public void  SetColorKey  (System.Drawing.Color  colorLow  , System.Drawing.Color  colorHigh  , ColorAdjustType  type  );    public void  SetColorMatrices  (ColorMatrix  newColorMatrix  , ColorMatrix  grayMatrix  );    public void  SetColorMatrices  (ColorMatrix  newColorMatrix  , ColorMatrix  grayMatrix  , ColorMatrixFlag  flags  );    public void  SetColorMatrices  (ColorMatrix  newColorMatrix  , ColorMatrix  grayMatrix  , ColorMatrixFlag  mode  ,          ColorAdjustType  type  );    public void  SetColorMatrix  (ColorMatrix  newColorMatrix  );    public void  SetColorMatrix  (ColorMatrix  newColorMatrix  , ColorMatrixFlag  flags  );    public void  SetColorMatrix  (ColorMatrix  newColorMatrix  , ColorMatrixFlag  mode  , ColorAdjustType  type  );    public void  SetGamma  (float  gamma  );    public void  SetGamma  (float  gamma  , ColorAdjustType  type  );    public void  SetNoOp  ();    public void  SetNoOp  (ColorAdjustType  type  );    public void  SetOutputChannel  (ColorChannelFlag  flags  );    public void  SetOutputChannel  (ColorChannelFlag  flags  , ColorAdjustType  type  );    public void  SetOutputChannelColorProfile  (string  colorProfileFilename  );    public void  SetOutputChannelColorProfile  (string  colorProfileFilename  , ColorAdjustType  type  );    public void  SetRemapTable  (ColorMap[ ]  map  );    public void  SetRemapTable  (ColorMap[ ]  map  , ColorAdjustType  type  );    public void  SetThreshold  (float  threshold  );    public void  SetThreshold  (float  threshold  , ColorAdjustType  type  );    public void  SetWrapMode  (System.Drawing.Drawing2D.WrapMode  mode  );    public void  SetWrapMode  (System.Drawing.Drawing2D.WrapMode  mode  , System.Drawing.Color  color  );    public void  SetWrapMode  (System.Drawing.Drawing2D.WrapMode  mode  , System.Drawing.Color  color  , bool  clamp  );  // Protected Instance Methods  protected override void  Finalize  ();  // overrides object  } 

Passed To

System.Drawing.Graphics.{DrawImage() , EnumerateMetafile()} , System.Drawing.TextureBrush.TextureBrush()



. Net Windows Forms in a Nutshell
.NET Windows Forms in a Nutshell
ISBN: 0596003382
EAN: 2147483647
Year: 2002
Pages: 794

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