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org.eclipse.swt.graphics
Class RGB
java.lang.Object
org.eclipse.swt.graphics.RGB
- public final class RGB
- extends
Object
Instances of this class are descriptions of colors in terms of the primary
additive color model (red, green and blue). A color may be described in terms
of the relative intensities of these three primary colors. The brightness of
each color is specified by a value in the range 0 to 255, where 0 indicates
no color (blackness) and 255 indicates maximum intensity.
The hashCode() method in this class uses the values of the public fields to
compute the hash value. When storing instances of the class in hashed
collections, do not modify these fields after the object has been inserted.
Application code does not need to explicitly release the resources
managed by each instance when those instances are no longer required, and
thus no dispose() method is provided.
-
Since:
- 1.0
-
See Also:
-
Color
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Field Summary
|
int
|
blue
the blue component of the RGB |
int
|
green
the green component of the RGB |
int
|
red
the red component of the RGB |
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Constructor Summary
|
RGB
(float hue,
float saturation,
float brightness)
Constructs an instance of this class with the given hue, saturation, and
brightness. |
RGB
(int red,
int green,
int blue)
Constructs an instance of this class with the given red, green and blue
values. |
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Method Summary
|
boolean
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equals
(
Object object)
Compares the argument to the receiver, and returns true if they represent
the same object using a class specific comparison. |
float[]
|
getHSB
()
Returns the hue, saturation, and brightness of the color. |
int
|
hashCode
()
Returns an integer hash code for the receiver. |
String
|
toString
()
Returns a string containing a concise, human-readable description of the
receiver. |
red
public int red
- the red component of the RGB
green
public int green
- the green component of the RGB
blue
public int blue
- the blue component of the RGB
RGB
public RGB(int red,
int green,
int blue)
- Constructs an instance of this class with the given red, green and blue
values.
-
Parameters:
-
red - the red component of the new instance -
green - the green component of the new instance -
blue - the blue component of the new instance
-
Throws:
-
IllegalArgumentException
-
- ERROR_INVALID_ARGUMENT - if the red, green or blue
argument is not between 0 and 255
RGB
public RGB(float hue,
float saturation,
float brightness)
- Constructs an instance of this class with the given hue, saturation, and
brightness.
-
Parameters:
-
hue - the hue value for the HSB color (from 0 to 360) -
saturation - the saturation value for the HSB color (from 0 to 1) -
brightness - the brightness value for the HSB color (from 0 to 1)
-
Throws:
-
IllegalArgumentException
-
- ERROR_INVALID_ARGUMENT - if the hue is not between 0 and
360 or the saturation or brightness is not between 0 and 1
-
Since:
- 1.0
getHSB
public float[] getHSB()
- Returns the hue, saturation, and brightness of the color.
-
-
Returns:
- color space values in float format (hue, saturation, brightness)
-
Since:
- 1.0
equals
public boolean equals(
Object object)
- Compares the argument to the receiver, and returns true if they represent
the same object using a class specific comparison.
-
-
Parameters:
-
object - the object to compare with this object
-
Returns:
-
true if the object is the same as this object and
false otherwise -
See Also:
-
hashCode()
hashCode
public int hashCode()
- Returns an integer hash code for the receiver. Any two objects that return
true when passed to equals must return the
same value for this method.
-
-
Returns:
- the receiver's hash
-
See Also:
-
equals(Object)
toString
public
String toString()
- Returns a string containing a concise, human-readable description of the
receiver.
-
-
Returns:
- a string representation of the
RGB
Copyright (c) Innoopract Informationssysteme GmbH and others 2002, 2008. All rights reserved.
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