Color (ocap 1.3.1 API)

java.lang.Object
- java.awt.Color

All Implemented Interfaces:

Transparency, Serializable

Direct Known Subclasses:

AlphaColor, SystemColor
```
public class Color
extends Object
implements Serializable, Transparency
```
The Color class is used encapsulate colors in the default sRGB color space or colors in arbitrary color spaces identified by a ColorSpace. Every color has an implicit alpha value of 1.0 or an explicit one provided in the constructor. The alpha value defines the transparency of a color and can be represented by a float value in the range 0.0 - 1.0 or 0 - 255. An alpha value of 1.0 or 255 means that the color is completely opaque and an alpha value of 0 or 0.0 means that the color is completely transparent. When constructing a Color with an explicit alpha or getting the color/alpha components of a Color, the color components are never premultiplied by the alpha component.
The default color space for the Java 2D(tm) API is sRGB, a proposed standard RGB color space. For further information on sRGB, see http://www.w3.org/pub/WWW/Graphics/Color/sRGB.html .

Version:

10 Feb 1997

Author:

Sami Shaio, Arthur van Hoff

See Also:
ColorSpace, AlphaComposite, Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static Color`	`black` An object of type `Color` representing the color black.
`static Color`	`BLACK` An object of type `Color` representing the color black.
`static Color`	`blue` An object of type `Color` representing the color blue.
`static Color`	`BLUE` An object of type `Color` representing the color blue.
`static Color`	`cyan` An object of type `Color` representing the color cyan.
`static Color`	`CYAN` An object of type `Color` representing the color cyan.
`static Color`	`DARK_GRAY` An object of type `Color` representing the color dark gray.
`static Color`	`darkGray` An object of type `Color` representing the color dark gray.
`static Color`	`gray` An object of type `Color` representing the color gray.
`static Color`	`GRAY` An object of type `Color` representing the color gray.
`static Color`	`green` An object of type `Color` representing the color green.
`static Color`	`GREEN` An object of type `Color` representing the color green.
`static Color`	`LIGHT_GRAY` An object of type `Color` representing the color light gray.
`static Color`	`lightGray` An object of type `Color` representing the color light gray.
`static Color`	`magenta` An object of type `Color` representing the color magenta.
`static Color`	`MAGENTA` An object of type `Color` representing the color magenta.
`static Color`	`orange` An object of type `Color` representing the color orange.
`static Color`	`ORANGE` An object of type `Color` representing the color orange.
`static Color`	`pink` An object of type `Color` representing the color pink.
`static Color`	`PINK` An object of type `Color` representing the color pink.
`static Color`	`red` An object of type `Color` representing the color red.
`static Color`	`RED` An object of type `Color` representing the color red.
`static Color`	`white` An object of type `Color` representing the color white.
`static Color`	`WHITE` An object of type `Color` representing the color white.
`static Color`	`yellow` An object of type `Color` representing the color yellow.
`static Color`	`YELLOW` An object of type `Color` representing the color yellow.

Fields inherited from interface java.awt.Transparency
BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

Constructors
Constructor and Description
`Color(float r, float g, float b)` Creates an opaque sRGB color with the specified red, green, and blue values in the range (0.0 - 1.0).
`Color(float r, float g, float b, float a)` Creates an sRGB color with the specified red, green, blue, and alpha values in the range (0.0 - 1.0).
`Color(int rgb)` Creates an opaque sRGB color with the specified combined RGB value consisting of the red component in bits 16-23, the green component in bits 8-15, and the blue component in bits 0-7.
`Color(int rgba, boolean hasalpha)` Creates an sRGB color with the specified combined RGBA value consisting of the alpha component in bits 24-31, the red component in bits 16-23, the green component in bits 8-15, and the blue component in bits 0-7.
`Color(int r, int g, int b)` Creates an opaque sRGB color with the specified red, green, and blue values in the range (0 - 255).
`Color(int r, int g, int b, int a)` Creates an sRGB color with the specified red, green, blue, and alpha values in the range (0 - 255).

Method Summary

Methods
Modifier and Type	Method and Description
`Color`	`brighter()` Creates a new `Color` that is a brighter version of this `Color`.
`Color`	`darker()` Creates a new `Color` that is a darker version of this `Color`.
`static Color`	`decode(String nm)` Converts a `String` to an integer and returns the specified opaque `Color`.
`boolean`	`equals(Object obj)` Determines whether another object is equal to this `Color`.
`int`	`getAlpha()` Returns the alpha component in the range 0-255.
`int`	`getBlue()` Returns the blue component in the range 0-255 in the default sRGB space.
`static Color`	`getColor(String nm)` Finds a color in the system properties.
`static Color`	`getColor(String nm, Color v)` Finds a color in the system properties.
`static Color`	`getColor(String nm, int v)` Finds a color in the system properties.
`float[]`	`getColorComponents(float[] compArray)` Returns a `float` array containing only the color components of the `Color`, in the `ColorSpace` of the `Color`.
`ColorSpace`	`getColorSpace()` Returns the `ColorSpace` of this `Color`.
`float[]`	`getComponents(float[] compArray)` Returns a `float` array containing the color and alpha components of the `Color`, in the `ColorSpace` of the `Color`.
`int`	`getGreen()` Returns the green component in the range 0-255 in the default sRGB space.
`static Color`	`getHSBColor(float h, float s, float b)` Creates a `Color` object based on the specified values for the HSB color model.
`int`	`getRed()` Returns the red component in the range 0-255 in the default sRGB space.
`int`	`getRGB()` Returns the RGB value representing the color in the default sRGB `ColorModel`.
`float[]`	`getRGBColorComponents(float[] compArray)` Returns a `float` array containing only the color components of the `Color`, in the default sRGB color space.
`float[]`	`getRGBComponents(float[] compArray)` Returns a `float` array containing the color and alpha components of the `Color`, as represented in the default sRGB color space.
`int`	`getTransparency()` Returns the transparency mode for this `Color`.
`int`	`hashCode()` Computes the hash code for this `Color`.
`static int`	`HSBtoRGB(float hue, float saturation, float brightness)` Converts the components of a color, as specified by the HSB model, to an equivalent set of values for the default RGB model.
`static float[]`	`RGBtoHSB(int r, int g, int b, float[] hsbvals)` Converts the components of a color, as specified by the default RGB model, to an equivalent set of values for hue, saturation, and brightness that are the three components of the HSB model.
`String`	`toString()` Returns a string representation of this `Color`.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Field Detail
  - white
```
public static final Color white
```
    An object of type Color representing the color white. In the default sRGB space.
  - WHITE
```
public static final Color WHITE
```
    An object of type Color representing the color white. In the default sRGB space.
  - lightGray
```
public static final Color lightGray
```
    An object of type Color representing the color light gray. In the default sRGB space.
  - LIGHT_GRAY
```
public static final Color LIGHT_GRAY
```
    An object of type Color representing the color light gray. In the default sRGB space.
  - gray
```
public static final Color gray
```
    An object of type Color representing the color gray. In the default sRGB space.
  - GRAY
```
public static final Color GRAY
```
    An object of type Color representing the color gray. In the default sRGB space.
  - darkGray
```
public static final Color darkGray
```
    An object of type Color representing the color dark gray. In the default sRGB space.
  - DARK_GRAY
```
public static final Color DARK_GRAY
```
    An object of type Color representing the color dark gray. In the default sRGB space.
  - black
```
public static final Color black
```
    An object of type Color representing the color black. In the default sRGB space.
  - BLACK
```
public static final Color BLACK
```
    An object of type Color representing the color black. In the default sRGB space.
  - red
```
public static final Color red
```
    An object of type Color representing the color red. In the default sRGB space.
  - RED
```
public static final Color RED
```
    An object of type Color representing the color red. In the default sRGB space.
  - pink
```
public static final Color pink
```
    An object of type Color representing the color pink. In the default sRGB space.
  - PINK
```
public static final Color PINK
```
    An object of type Color representing the color pink. In the default sRGB space.
  - orange
```
public static final Color orange
```
    An object of type Color representing the color orange. In the default sRGB space.
  - ORANGE
```
public static final Color ORANGE
```
    An object of type Color representing the color orange. In the default sRGB space.
  - yellow
```
public static final Color yellow
```
    An object of type Color representing the color yellow. In the default sRGB space.
  - YELLOW
```
public static final Color YELLOW
```
    An object of type Color representing the color yellow. In the default sRGB space.
  - green
```
public static final Color green
```
    An object of type Color representing the color green. In the default sRGB space.
  - GREEN
```
public static final Color GREEN
```
    An object of type Color representing the color green. In the default sRGB space.
  - magenta
```
public static final Color magenta
```
    An object of type Color representing the color magenta. In the default sRGB space.
  - MAGENTA
```
public static final Color MAGENTA
```
    An object of type Color representing the color magenta. In the default sRGB space.
  - cyan
```
public static final Color cyan
```
    An object of type Color representing the color cyan. In the default sRGB space.
  - CYAN
```
public static final Color CYAN
```
    An object of type Color representing the color cyan. In the default sRGB space.
  - blue
```
public static final Color blue
```
    An object of type Color representing the color blue. In the default sRGB space.
  - BLUE
```
public static final Color BLUE
```
    An object of type Color representing the color blue. In the default sRGB space.
- Constructor Detail
  - Color
```
public Color(int r,
     int g,
     int b)
```
    Creates an opaque sRGB color with the specified red, green, and blue values in the range (0 - 255). The actual color used in rendering depends on finding the best match given the color space available for a given output device. Alpha is defaulted to 255.
    
    Parameters:
    r - the red component
    g - the green component
    b - the blue component
    See Also:
    getRed(), getGreen(), getBlue(), getRGB()
  - Color
```
public Color(int r,
     int g,
     int b,
     int a)
```
    Creates an sRGB color with the specified red, green, blue, and alpha values in the range (0 - 255).
    
    Parameters:
    r - the red component
    g - the green component
    b - the blue component
    a - the alpha component
    See Also:
    getRed(), getGreen(), getBlue(), getAlpha(), getRGB()
  - Color
```
public Color(int rgb)
```
    Creates an opaque sRGB color with the specified combined RGB value consisting of the red component in bits 16-23, the green component in bits 8-15, and the blue component in bits 0-7. The actual color used in rendering depends on finding the best match given the color space available for a particular output device. Alpha is defaulted to 255.
    
    Parameters:
    rgb - the combined RGB components
    See Also:
    ColorModel.getRGBdefault(), getRed(), getGreen(), getBlue(), getRGB()
  - Color
```
public Color(int rgba,
     boolean hasalpha)
```
    Creates an sRGB color with the specified combined RGBA value consisting of the alpha component in bits 24-31, the red component in bits 16-23, the green component in bits 8-15, and the blue component in bits 0-7. If the hasalpha argument is false, alpha is defaulted to 255.
    
    Parameters:
    rgba - the combined RGBA components
    hasalpha - true if the alpha bits are valid; false otherwise
    See Also:
    ColorModel.getRGBdefault(), getRed(), getGreen(), getBlue(), getAlpha(), getRGB()
  - Color
```
public Color(float r,
     float g,
     float b)
```
    Creates an opaque sRGB color with the specified red, green, and blue values in the range (0.0 - 1.0). Alpha is defaulted to 1.0. The actual color used in rendering depends on finding the best match given the color space available for a particular output device.
    
    Parameters:
    r - the red component
    g - the green component
    b - the blue component
    See Also:
    getRed(), getGreen(), getBlue(), getRGB()
  - Color
```
public Color(float r,
     float g,
     float b,
     float a)
```
    Creates an sRGB color with the specified red, green, blue, and alpha values in the range (0.0 - 1.0). The actual color used in rendering depends on finding the best match given the color space available for a particular output device.
    
    Parameters:
    r - the red component
    g - the green component
    b - the blue component
    a - the alpha component
    See Also:
    getRed(), getGreen(), getBlue(), getAlpha(), getRGB()
- Method Detail
  - getRed
```
public int getRed()
```
    Returns the red component in the range 0-255 in the default sRGB space.
    
    Returns:
    the red component.
    See Also:
    getRGB()
  - getGreen
```
public int getGreen()
```
    Returns the green component in the range 0-255 in the default sRGB space.
    
    Returns:
    the green component.
    See Also:
    getRGB()
  - getBlue
```
public int getBlue()
```
    Returns the blue component in the range 0-255 in the default sRGB space.
    
    Returns:
    the blue component.
    See Also:
    getRGB()
  - getAlpha
```
public int getAlpha()
```
    Returns the alpha component in the range 0-255.
    
    Returns:
    the alpha component.
    See Also:
    getRGB()
  - getRGB
```
public int getRGB()
```
    Returns the RGB value representing the color in the default sRGB ColorModel. (Bits 24-31 are alpha, 16-23 are red, 8-15 are green, 0-7 are blue).
    
    Returns:
    the RGB value of the color in the default sRGB ColorModel.
    Since:
    
    JDK1.0
    
    See Also:
    ColorModel.getRGBdefault(), getRed(), getGreen(), getBlue()
  - brighter
```
public Color brighter()
```
    Creates a new Color that is a brighter version of this Color.
    This method applies an arbitrary scale factor to each of the three RGB components of this Color to create a brighter version of this Color. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.
    
    Returns:
    a new Color object that is a brighter version of this Color.
    Since:
    
    JDK1.0
    
    See Also:
    darker()
  - darker
```
public Color darker()
```
    Creates a new Color that is a darker version of this Color.
    This method applies an arbitrary scale factor to each of the three RGB components of this Color to create a darker version of this Color. Although brighter and darker are inverse operations, the results of a series of invocations of these two methods might be inconsistent because of rounding errors.
    
    Returns:
    a new Color object that is a darker version of this Color.
    Since:
    
    JDK1.0
    
    See Also:
    brighter()
  - hashCode
```
public int hashCode()
```
    Computes the hash code for this Color.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    a hash code value for this object.
    Since:
    
    JDK1.0
    
    See Also:
    Object.equals(java.lang.Object), Hashtable
  - equals
```
public boolean equals(Object obj)
```
    Determines whether another object is equal to this Color.
    The result is true if and only if the argument is not null and is a Color object that has the same red, green, blue, and alpha values as this object.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    obj - the object to test for equality with this Color
    
    Returns:
    true if the objects are the same; false otherwise.
    Since:
    
    JDK1.0
    
    See Also:
    Object.hashCode(), Hashtable
  - toString
```
public String toString()
```
    Returns a string representation of this Color. This method is intended to be used only for debugging purposes. The content and format of the returned string might vary between implementations. The returned string might be empty but cannot be null.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    a string representation of this Color.
  - decode
```
public static Color decode(String nm)
                    throws NumberFormatException
```
    Converts a String to an integer and returns the specified opaque Color. This method handles string formats that are used to represent octal and hexidecimal numbers.
    
    Parameters:
    nm - a String that represents an opaque color as a 24-bit integer
    
    Returns:
    the new Color object.
    
    Throws:
    
    NumberFormatException - if the specified string cannot be interpreted as a decimal, octal, or hexidecimal integer.
    Since:
    
    JDK1.1
    
    See Also:
    Integer.decode(java.lang.String)
  - getColor
```
public static Color getColor(String nm)
```
    Finds a color in the system properties.
    The argument is treated as the name of a system property to be obtained. The string value of this property is then interpreted as an integer which is then converted to a Color object.
    If the specified property is not found or could not be parsed as an integer then null is returned.
    
    Parameters:
    nm - the name of the color property
    
    Returns:
    the Color converted from the system property.
    Since:
    
    JDK1.0
    
    See Also:
    System.getProperty(java.lang.String), Integer.getInteger(java.lang.String), Color(int)
  - getColor
```
public static Color getColor(String nm,
             Color v)
```
    Finds a color in the system properties.
    The first argument is treated as the name of a system property to be obtained. The string value of this property is then interpreted as an integer which is then converted to a Color object.
    If the specified property is not found or cannot be parsed as an integer then the Color specified by the second argument is returned instead.
    
    Parameters:
    nm - the name of the color property
    v - the default Color
    
    Returns:
    the Color converted from the system property, or the specified Color.
    Since:
    
    JDK1.0
    
    See Also:
    System.getProperty(java.lang.String), Integer.getInteger(java.lang.String), Color(int)
  - getColor
```
public static Color getColor(String nm,
             int v)
```
    Finds a color in the system properties.
    The first argument is treated as the name of a system property to be obtained. The string value of this property is then interpreted as an integer which is then converted to a Color object.
    If the specified property is not found or could not be parsed as an integer then the integer value v is used instead, and is converted to a Color object.
    
    Parameters:
    nm - the name of the color property
    v - the default color value, as an integer
    
    Returns:
    the Color converted from the system property or the Color converted from the specified integer.
    Since:
    
    JDK1.0
    
    See Also:
    System.getProperty(java.lang.String), Integer.getInteger(java.lang.String), Color(int)
  - HSBtoRGB
```
public static int HSBtoRGB(float hue,
           float saturation,
           float brightness)
```
    Converts the components of a color, as specified by the HSB model, to an equivalent set of values for the default RGB model.
    The saturation and brightness components should be floating-point values between zero and one (numbers in the range 0.0-1.0). The hue component can be any floating-point number. The floor of this number is subtracted from it to create a fraction between 0 and 1. This fractional number is then multiplied by 360 to produce the hue angle in the HSB color model.
    The integer that is returned by HSBtoRGB encodes the value of a color in bits 0-23 of an integer value that is the same format used by the method getRGB. This integer can be supplied as an argument to the Color constructor that takes a single integer argument.
    
    Parameters:
    hue - the hue component of the color
    saturation - the saturation of the color
    brightness - the brightness of the color
    
    Returns:
    the RGB value of the color with the indicated hue, saturation, and brightness.
    Since:
    
    JDK1.0
    
    See Also:
    getRGB(), Color(int), ColorModel.getRGBdefault()
  - RGBtoHSB
```
public static float[] RGBtoHSB(int r,
               int g,
               int b,
               float[] hsbvals)
```
    Converts the components of a color, as specified by the default RGB model, to an equivalent set of values for hue, saturation, and brightness that are the three components of the HSB model.
    If the hsbvals argument is null, then a new array is allocated to return the result. Otherwise, the method returns the array hsbvals, with the values put into that array.
    
    Parameters:
    r - the red component of the color
    g - the green component of the color
    b - the blue component of the color
    hsbvals - the array used to return the three HSB values, or null
    
    Returns:
    an array of three elements containing the hue, saturation, and brightness (in that order), of the color with the indicated red, green, and blue components.
    Since:
    
    JDK1.0
    
    See Also:
    getRGB(), Color(int), ColorModel.getRGBdefault()
  - getHSBColor
```
public static Color getHSBColor(float h,
                float s,
                float b)
```
    Creates a Color object based on the specified values for the HSB color model.
    The s and b components should be floating-point values between zero and one (numbers in the range 0.0-1.0). The h component can be any floating-point number. The floor of this number is subtracted from it to create a fraction between 0 and 1. This fractional number is then multiplied by 360 to produce the hue angle in the HSB color model.
    
    Parameters:
    h - the hue component
    s - the saturation of the color
    b - the brightness of the color
    
    Returns:
    a Color object with the specified hue, saturation, and brightness.
    Since:
    
    JDK1.0
  - getRGBComponents
```
public float[] getRGBComponents(float[] compArray)
```
    Returns a float array containing the color and alpha components of the Color, as represented in the default sRGB color space. If compArray is null, an array of length 4 is created for the return value. Otherwise, compArray must have length 4 or greater, and it is filled in with the components and returned.
    
    Parameters:
    compArray - an array that this method fills with color and alpha components and returns
    
    Returns:
    the RGBA components in a float array.
  - getRGBColorComponents
```
public float[] getRGBColorComponents(float[] compArray)
```
    Returns a float array containing only the color components of the Color, in the default sRGB color space. If compArray is null, an array of length 3 is created for the return value. Otherwise, compArray must have length 3 or greater, and it is filled in with the components and returned.
    
    Parameters:
    compArray - an array that this method fills with color components and returns
    
    Returns:
    the RGB components in a float array.
  - getComponents
```
public float[] getComponents(float[] compArray)
```
    Returns a float array containing the color and alpha components of the Color, in the ColorSpace of the Color. If compArray is null, an array with length equal to the number of components in the associated ColorSpace plus one is created for the return value. Otherwise, compArray must have at least this length and it is filled in with the components and returned.
    
    Parameters:
    compArray - an array that this method fills with the color and alpha components of this Color in its ColorSpace and returns
    
    Returns:
    the color and alpha components in a float array.
  - getColorComponents
```
public float[] getColorComponents(float[] compArray)
```
    Returns a float array containing only the color components of the Color, in the ColorSpace of the Color. If compArray is null, an array with length equal to the number of components in the associated ColorSpace is created for the return value. Otherwise, compArray must have at least this length and it is filled in with the components and returned.
    
    Parameters:
    compArray - an array that this method fills with the color components of this Color in its ColorSpace and returns
    
    Returns:
    the color components in a float array.
  - getColorSpace
```
public ColorSpace getColorSpace()
```
    Returns the ColorSpace of this Color.
    
    Returns:
    this Color object's ColorSpace.
  - getTransparency
```
public int getTransparency()
```
    Returns the transparency mode for this Color.
    
    Specified by:
    
    getTransparency in interface Transparency
    
    Returns:
    this Color object's transparency mode.
    See Also:
    Transparency

Class Color

Field Summary

Fields inherited from interface java.awt.Transparency

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

white

WHITE

lightGray

LIGHT_GRAY

gray

GRAY

darkGray

DARK_GRAY

black

BLACK

red

RED

pink

PINK

orange

ORANGE

yellow

YELLOW

green

GREEN

magenta

MAGENTA

cyan

CYAN

blue

BLUE

Constructor Detail

Color

Color

Color

Color

Color

Color

Method Detail

getRed

getGreen

getBlue

getAlpha

getRGB

brighter

darker

hashCode

equals

toString

decode

getColor

getColor

getColor

HSBtoRGB

RGBtoHSB

getHSBColor

getRGBComponents

getRGBColorComponents

getComponents

getColorComponents

getColorSpace

getTransparency