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Chapter 22 java.awt.image Reference |
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ColorModel
Name
ColorModel
![[Graphic: Figure from the text]](./figs/colormo.gif)
Description
The abstract ColorModel class defines the way a Java program represents colors. It provides methods for extracting different color components from a pixel.
Class Definition
public class java.awt.image.ColorModel
extends java.lang.Object {
// Variables
protected int pixel_bits;
// Constructors
public ColorModel (int bits);
// Class Methods
public static ColorModel getRGBdefault();
// Instance Methods
public void finalize(); 
public abstract int getAlpha (int pixel);
public abstract int getBlue (int pixel);
public abstract int getGreen (int pixel);
public int getPixelSize();
public abstract int getRed (int pixel);
public int getRGB (int pixel);
}
ProtectedVariables
pixel_bits
protected int pixel_bits
The pixel_bits variable saves the ColorModel's bits setting (the total number of bits per pixel).
Constructors
ColorModel
public ColorModel (int bits)
- Parameters
-
- bits
-
The number of bits required per pixel using this model.
- bits
- Description
-
Constructs a ColorModel object.
Class Methods
getRGBdefault
public static ColorModel getRGBdefault()
- Returns
-
The default ColorModel format, which uses 8 bits for each of a pixel's color components: alpha (transparency), red, green, and blue.
Instance Methods
finalize
public void finalize()
- Overrides
-
Object.finalize()
- Description
-
Cleans up when this object is garbage collected.
getAlpha
public abstract int getAlpha (int pixel)
- Parameters
-
- pixel
-
A pixel encoded with this ColorModel.
- pixel
- Returns
-
The current alpha setting of the pixel.
getBlue
public abstract int getBlue (int pixel)
- Parameters
-
- pixel
-
A pixel encoded with this ColorModel.
- pixel
- Returns
-
The current blue setting of the pixel.
getGreen
public abstract int getGreen (int pixel)
- Parameters
-
- pixel
-
A pixel encoded with this ColorModel.
- pixel
- Returns
-
The current green setting of the pixel.
getPixelSize
public int getPixelSize()
- Returns
-
The current pixel size for the color model.
getRed
public abstract int getRed (int pixel)
- Parameters
-
- pixel
-
A pixel encoded with this ColorModel.
- pixel
- Returns
-
The current red setting of the pixel.
getRGB
public int getRGB (int pixel)
- Parameters
-
- pixel
-
A pixel encoded with this ColorModel.
- pixel
- Returns
-
The current combined red, green, and blue settings of the pixel.
- Description
-
Gets the color of pixel in the default RGB color model.
See Also
DirectColorModel, IndexColorModel, Object
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| AreaAveragingScaleFilter |
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CropImageFilter |
