Standard Widget Toolkit for GTK 3.125.0 · org.eclipse.swt.graphics.RGBA

Instances of this class are descriptions of colors in terms of the primary additive color model (red, green, blue and alpha). 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 and for alpha 0 indicates transparent and 255 indicates opaque.

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

Modifier and Type	Field and Description
public int	alpha the alpha component of the RGBA
public final RGB	rgb the RGB component of the RGBA
pack-priv static final long	serialVersionUID

Constructor Summary

Access	Constructor and Description
public	RGBA(int the red component of the new instance red, int the green component of the new instance green, int the blue component of the new instance blue, int the alpha component of the new instance alpha) Constructs an instance of this class with the given red, green, blue and alpha values.
public	RGBA(float the hue value for the HSBA color (from 0 to 360) hue, float the saturation value for the HSBA color (from 0 to 1) saturation, float the brightness value for the HSBA color (from 0 to 1) brightness, float the alpha value for the HSBA color (from 0 to 255) alpha) Constructs an instance of this class with the given hue, saturation, and brightness.

Method Summary

Modifier and Type	Method and Description
public boolean	Returns: `true` if the object is the same as this object and `false` otherwise equals(Object the object to compare with this object object) Overrides java.lang.Object.equals. Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.
public float[]	Returns: color space values in float format: hue (from 0 to 360) saturation (from 0 to 1) brightness (from 0 to 1) alpha (from 0 to 255) getHSBA() Returns the hue, saturation, and brightness of the color.
public int	Returns: the receiver's hash hashCode() Overrides java.lang.Object.hashCode. Returns an integer hash code for the receiver.
public String	Returns: a string representation of the `RGBA` toString() Overrides java.lang.Object.toString. Returns a string containing a concise, human-readable description of the receiver.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll wait wait wait

Field Detail

alpha	back to summary
public int alpha the alpha component of the RGBA

rgb	back to summary
public final RGB rgb the RGB component of the RGBA

serialVersionUID	back to summary
pack-priv static final long serialVersionUID

Constructor Detail

RGBA	back to summary
public RGBA(int red, int green, int blue, int alpha) Constructs an instance of this class with the given red, green, blue and alpha values. Parameters red:int the red component of the new instance green:int the green component of the new instance blue:int the blue component of the new instance alpha:int the alpha component of the new instance Exceptions IllegalArgumentException: ERROR_INVALID_ARGUMENT - if the red, green, blue or alpha argument is not between 0 and 255

RGBA

back to summary

public RGBA(int red, int green, int blue, int alpha)

Constructs an instance of this class with the given red, green, blue and alpha values.

Parameters

red:int: the red component of the new instance
green:int: the green component of the new instance
blue:int: the blue component of the new instance
alpha:int: the alpha component of the new instance

Exceptions

IllegalArgumentException:

ERROR_INVALID_ARGUMENT - if the red, green, blue or alpha argument is not between 0 and 255

RGBA	back to summary
public RGBA(float hue, float saturation, float brightness, float alpha) Constructs an instance of this class with the given hue, saturation, and brightness. Parameters hue:float the hue value for the HSBA color (from 0 to 360) saturation:float the saturation value for the HSBA color (from 0 to 1) brightness:float the brightness value for the HSBA color (from 0 to 1) alpha:float the alpha value for the HSBA color (from 0 to 255) Exceptions IllegalArgumentException: ERROR_INVALID_ARGUMENT - if the hue is not between 0 and 360 or the saturation or brightness is not between 0 and 1 or if the alpha is not between 0 and 255

RGBA

back to summary

public RGBA(float hue, float saturation, float brightness, float alpha)

Constructs an instance of this class with the given hue, saturation, and brightness.

Parameters

hue:float: the hue value for the HSBA color (from 0 to 360)
saturation:float: the saturation value for the HSBA color (from 0 to 1)
brightness:float: the brightness value for the HSBA color (from 0 to 1)
alpha:float: the alpha value for the HSBA color (from 0 to 255)

Exceptions

IllegalArgumentException:

ERROR_INVALID_ARGUMENT - if the hue is not between 0 and 360 or the saturation or brightness is not between 0 and 1 or if the alpha is not between 0 and 255

Method Detail

equals back to summary

equals	back to summary
public boolean equals(Object object) Overrides java.lang.Object.equals. Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison. Parameters object:Object the object to compare with this object Returns:boolean `true` if the object is the same as this object and `false` otherwise Annotations @Override See Also `hashCode()`

public boolean equals(Object object)

Overrides java.lang.Object.equals.

Compares the argument to the receiver, and returns true if they represent the same object using a class specific comparison.

Parameters

object:Object: the object to compare with this object

Returns:boolean

true if the object is the same as this object and false otherwise

Annotations

@Override

See Also

hashCode()

getHSBA back to summary

getHSBA	back to summary
public float[] getHSBA() Returns the hue, saturation, and brightness of the color. Returns:float[] color space values in float format: hue (from 0 to 360) saturation (from 0 to 1) brightness (from 0 to 1) alpha (from 0 to 255) See Also `RGBA(float, float, float, float)`

public float[] getHSBA()

Returns the hue, saturation, and brightness of the color.

Returns:float[]

color space values in float format:

hue (from 0 to 360)
saturation (from 0 to 1)
brightness (from 0 to 1)
alpha (from 0 to 255)

See Also

RGBA(float, float, float, float)

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.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:int the receiver's hash Annotations @Override See Also `equals(Object)`

public int hashCode()

Overrides java.lang.Object.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:int

the receiver's hash

Annotations

@Override

See Also

equals(Object)

toString back to summary

toString	back to summary
public String toString() Overrides java.lang.Object.toString. Returns a string containing a concise, human-readable description of the receiver. Returns:String a string representation of the `RGBA` Annotations @Override

public String toString()

Overrides java.lang.Object.toString.

Returns a string containing a concise, human-readable description of the receiver.

Returns:String

a string representation of the RGBA

Annotations

@Override

public final Class RGBA

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail