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Java AWT

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java.awt.image Reference
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DirectColorModel

Name

DirectColorModel

[Graphic: Figure from the text]

Description

The DirectColorModel class provides a ColorModel that specifies a translation between pixels and alpha, red, green, and blue component values, where the color values are embedded directly within the pixel.

Class Definition

public class java.awt.image.DirectColorModel
    extends java.awt.image.ColorModel {
  // Constructors
  public DirectColorModel (int bits, int redMask, int greenMask, 
    int blueMask);
  public DirectColorModel (int bits, int redMask, int greenMask, 
    int blueMask, 
    int alphaMask);
  // Instance Methods
  public final int getAlpha (int pixel);
  public final int getAlphaMask();
  public final int getBlue (int pixel);
  public final int getBlueMask();
  public final int getGreen (int pixel);
  public final int getGreenMask()
  public final int getRed (int pixel);
  public final int getRedMask();
  public final int getRGB (int pixel);
}

Constructors

DirectColorModel

public DirectColorModel (int bits, int redMask, int greenMask, int blueMask)

Parameters

bits

The number of bits required per pixel of an image using this model.

redMask

The location of the red component of a pixel.

greenMask

The location of the green component of a pixel.

blueMask

The location of the blue component of a pixel.

Throws

IllegalArgumentException

If the mask bits are not contiguous or overlap.

Description

Constructs a DirectColorModel object with the given size and color masks; the alpha (transparency) component is not used.

public DirectColorModel (int bits, int redMask, int greenMask, int blueMask, int alphaMask)

Parameters

bits

The number of bits required per pixel of an image using this model.

redMask

The location of the red component of a pixel.

greenMask

The location of the green component of a pixel.

blueMask

The location of the blue component of a pixel.

alphaMask

The location of the alpha component of a pixel.

Throws

IllegalArgumentException

If the mask bits are not contiguous or overlap.

Description

Constructs a DirectColorModel object with the given size and color masks.

Instance Methods

getAlpha

public final int getAlpha (int pixel)

Parameters

pixel

A pixel encoded with this ColorModel.

Returns

The current alpha setting of the pixel.

Overrides

ColorModel.getAlpha(int)

getAlphaMask

public final int getAlphaMask()

Returns

The current alpha mask setting of the color model.

getBlue

public final int getBlue (int pixel)

Parameters

pixel

A pixel encoded with this ColorModel.

Returns

The current blue setting of the pixel.

Overrides

ColorModel.getBlue(int)

getBlueMask

public final int getBlueMask()

Returns

The current blue mask setting of the color model.

getGreen

public final int getGreen (int pixel)

Parameters

pixel

A pixel encoded with this ColorModel.

Returns

The current green setting of the pixel.

Overrides

ColorModel.getGreen(int)

getGreenMask

public final int getGreenMask()

Returns

The current green mask setting of the color model.

getRed

public final int getRed (int pixel)

Parameters

pixel

A pixel encoded with this ColorModel.

Returns

The current red setting of the pixel.

Overrides

ColorModel.getRed(int)

getRedMask

public final int getRedMask()

Returns

The current red mask setting of the color model.

getRGB

public final int getRGB (int pixel)

Parameters

pixel

A pixel encoded with this ColorModel.

Returns

The current combined red, green, and blue settings of the pixel.

Overrides

ColorModel.getRGB(int)

Description

Gets the color of pixel in the default RGB color model.

See Also

ColorModel


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