Package org.eclipse.swt.graphics
Class RGB
java.lang.Object
org.eclipse.swt.graphics.RGB
- All Implemented Interfaces:
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.
-
Field Summary
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionboolean
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.toString()
Returns a string containing a concise, human-readable description of the receiver.
-
Field Details
-
red
public int redthe red component of the RGB -
green
public int greenthe green component of the RGB -
blue
public int bluethe blue component of the RGB
-
-
Constructor Details
-
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
-
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
-
-
Method Details
-
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:
-
equals
Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison. -
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. -
toString
Returns a string containing a concise, human-readable description of the receiver.
-