Package org.eclipse.swt.graphics
Class RGB
- java.lang.Object
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- org.eclipse.swt.graphics.RGB
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- All Implemented Interfaces:
Serializable
public final class RGB extends Object implements Serializable
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.
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Constructor Summary
Constructors Constructor Description 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
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
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.
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Constructor Detail
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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 instancegreen
- the green component of the new instanceblue
- 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
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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:
- 3.2
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Method Detail
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getHSB
public float[] getHSB()
Returns the hue, saturation, and brightness of the color.- Returns:
- color space values in float format:
- hue (from 0 to 360)
- saturation (from 0 to 1)
- brightness (from 0 to 1)
- Since:
- 3.2
- See Also:
RGB(float, float, float)
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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.- Overrides:
equals
in classObject
- Parameters:
object
- the object to compare with this object- Returns:
true
if the object is the same as this object andfalse
otherwise- See Also:
hashCode()
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hashCode
public int hashCode()
Returns an integer hash code for the receiver. Any two objects that returntrue
when passed toequals
must return the same value for this method.- Overrides:
hashCode
in classObject
- Returns:
- the receiver's hash
- See Also:
equals(Object)
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