| java.lang.Object
 java.awt.Color
All known Subclasses: java.awt.SystemColor,
| Color | | public class Color implements Paint,java.io.Serializable(Code) | | The Color class is used to 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
author:
Arthur van Hoff
See Also: ColorSpace
See Also: AlphaComposite |
| Constructor Summary | |
| 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). | | 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). | | 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. | | 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. | | 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). | | 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). | | public | Color(ColorSpace cspace, float components, float alpha)
Creates a color in the specified ColorSpace
with the color components specified in the float
array and the specified alpha. |
| Method Summary | |
| 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. | | 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. | | 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. | | public synchronized PaintContext | createContext(ColorModel cm, Rectangle r, Rectangle2D r2d, AffineTransform xform, RenderingHints hints)
Creates and returns a
PaintContext used to generate a solid
color pattern. | | 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. | | public static Color | decode(String nm)
Converts a String to an integer and returns the
specified opaque Color. | | 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. | | public int | getAlpha()
Returns the alpha component in the range 0-255. | | public int | getBlue()
Returns the blue component in the range 0-255 in the default sRGB
space. | | public static Color | getColor(String nm)
Finds a color in the system properties. | | public static Color | getColor(String nm, Color v)
Finds a color in the system properties. | | public static Color | getColor(String nm, int v)
Finds a color in the system properties. | | 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. | | public float[] | getColorComponents(ColorSpace cspace, float[] compArray)
Returns a float array containing only the color
components of the Color in the
ColorSpace specified by the cspace
parameter. | | public ColorSpace | getColorSpace()
Returns the ColorSpace of this Color. | | 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. | | public float[] | getComponents(ColorSpace cspace, float[] compArray)
Returns a float array containing the color and alpha
components of the Color, in the
ColorSpace specified by the cspace
parameter. | | public int | getGreen()
Returns the green component in the range 0-255 in the default sRGB
space. | | public static Color | getHSBColor(float h, float s, float b)
Creates a Color object based on the specified values
for the HSB color model. | | public int | getRGB()
Returns the RGB value representing the color in the default sRGB
ColorModel . | | public float[] | getRGBColorComponents(float[] compArray)
Returns a float array containing only the color
components of the Color, in the default sRGB color
space. | | 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. | | public int | getRed()
Returns the red component in the range 0-255 in the default sRGB
space. | | public int | getTransparency()
Returns the transparency mode for this Color. | | public int | hashCode()
Computes the hash code for this Color. | | public String | toString()
Returns a string representation of this Color. |
| BLACK | | final public static Color BLACK(Code) | | The color black. In the default sRGB space.
since:
1.4 |
| BLUE | | final public static Color BLUE(Code) | | The color blue. In the default sRGB space.
since:
1.4 |
| CYAN | | final public static Color CYAN(Code) | | The color cyan. In the default sRGB space.
since:
1.4 |
| DARK_GRAY | | final public static Color DARK_GRAY(Code) | | The color dark gray. In the default sRGB space.
since:
1.4 |
| GRAY | | final public static Color GRAY(Code) | | The color gray. In the default sRGB space.
since:
1.4 |
| GREEN | | final public static Color GREEN(Code) | | The color green. In the default sRGB space.
since:
1.4 |
| LIGHT_GRAY | | final public static Color LIGHT_GRAY(Code) | | The color light gray. In the default sRGB space.
since:
1.4 |
| MAGENTA | | final public static Color MAGENTA(Code) | | The color magenta. In the default sRGB space.
since:
1.4 |
| ORANGE | | final public static Color ORANGE(Code) | | The color orange. In the default sRGB space.
since:
1.4 |
| PINK | | final public static Color PINK(Code) | | The color pink. In the default sRGB space.
since:
1.4 |
| RED | | final public static Color RED(Code) | | The color red. In the default sRGB space.
since:
1.4 |
| WHITE | | final public static Color WHITE(Code) | | The color white. In the default sRGB space.
since:
1.4 |
| YELLOW | | final public static Color YELLOW(Code) | | The color yellow. In the default sRGB space.
since:
1.4 |
| black | | final public static Color black(Code) | | The color black. In the default sRGB space.
|
| blue | | final public static Color blue(Code) | | The color blue. In the default sRGB space.
|
| cyan | | final public static Color cyan(Code) | | The color cyan. In the default sRGB space.
|
| darkGray | | final public static Color darkGray(Code) | | The color dark gray. In the default sRGB space.
|
| gray | | final public static Color gray(Code) | | The color gray. In the default sRGB space.
|
| green | | final public static Color green(Code) | | The color green. In the default sRGB space.
|
| lightGray | | final public static Color lightGray(Code) | | The color light gray. In the default sRGB space.
|
| magenta | | final public static Color magenta(Code) | | The color magenta. In the default sRGB space.
|
| orange | | final public static Color orange(Code) | | The color orange. In the default sRGB space.
|
| pink | | final public static Color pink(Code) | | The color pink. In the default sRGB space.
|
| red | | final public static Color red(Code) | | The color red. In the default sRGB space.
|
| white | | final public static Color white(Code) | | The color white. In the default sRGB space.
|
| yellow | | final public static Color yellow(Code) | | The color yellow. In the default sRGB space.
|
| Color | | public Color(int r, int g, int b)(Code) | | 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.
throws:
IllegalArgumentException - if r, gor b are outside of the range0 to 255, inclusive
Parameters:
r - the red component
Parameters:
g - the green component
Parameters:
b - the blue component
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getRGB |
| Color | | public Color(int r, int g, int b, int a)(Code) | | Creates an sRGB color with the specified red, green, blue, and alpha
values in the range (0 - 255).
throws:
IllegalArgumentException - if r, g,b or a are outside of the range0 to 255, inclusive
Parameters:
r - the red component
Parameters:
g - the green component
Parameters:
b - the blue component
Parameters:
a - the alpha component
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getAlpha
See Also: Color.getRGB |
| Color | | public Color(int rgb)(Code) | | 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: java.awt.image.ColorModel.getRGBdefault
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getRGB |
| Color | | public Color(int rgba, boolean hasalpha)(Code) | | 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
Parameters:
hasalpha - true if the alpha bits are valid;false otherwise
See Also: java.awt.image.ColorModel.getRGBdefault
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getAlpha
See Also: Color.getRGB |
| Color | | public Color(float r, float g, float b)(Code) | | 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.
throws:
IllegalArgumentException - if r, gor b are outside of the range0.0 to 1.0, inclusive
Parameters:
r - the red component
Parameters:
g - the green component
Parameters:
b - the blue component
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getRGB |
| Color | | public Color(float r, float g, float b, float a)(Code) | | 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.
throws:
IllegalArgumentException - if r, gb or a are outside of the range0.0 to 1.0, inclusive
Parameters:
r - the red component
Parameters:
g - the green component
Parameters:
b - the blue component
Parameters:
a - the alpha component
See Also: Color.getRed
See Also: Color.getGreen
See Also: Color.getBlue
See Also: Color.getAlpha
See Also: Color.getRGB |
| Color | | public Color(ColorSpace cspace, float components, float alpha)(Code) | | Creates a color in the specified ColorSpace
with the color components specified in the float
array and the specified alpha. The number of components is
determined by the type of the ColorSpace. For
example, RGB requires 3 components, but CMYK requires 4
components.
Parameters:
cspace - the ColorSpace to be used tointerpret the components
Parameters:
components - an arbitrary number of color componentsthat is compatible with the ColorSpace
Parameters:
alpha - alpha value
throws:
IllegalArgumentException - if any of the values in the components array or alpha is outside of the range 0.0 to 1.0
See Also: Color.getComponents
See Also: Color.getColorComponents |
| HSBtoRGB | | public static int HSBtoRGB(float hue, float saturation, float brightness)(Code) | | 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
Color.getRGB() 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
Parameters:
saturation - the saturation of the color
Parameters:
brightness - the brightness of the color the RGB value of the color with the indicated hue, saturation, and brightness.
See Also: java.awt.Color.getRGB
See Also: java.awt.Color.Color(int)
See Also: java.awt.image.ColorModel.getRGBdefault
since:
JDK1.0 |
| RGBtoHSB | | public static float[] RGBtoHSB(int r, int g, int b, float[] hsbvals)(Code) | | 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
Parameters:
g - the green component of the color
Parameters:
b - the blue component of the color
Parameters:
hsbvals - the array used to return the three HSB values, or null 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.
See Also: java.awt.Color.getRGB
See Also: java.awt.Color.Color(int)
See Also: java.awt.image.ColorModel.getRGBdefault
since:
JDK1.0 |
| brighter | | public Color brighter()(Code) | | 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.
a new Color object that is a brighter version of this Color.
See Also: java.awt.Color.darker
since:
JDK1.0 |
| darker | | public Color darker()(Code) | | 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.
a new Color object that is a darker version of this Color.
See Also: java.awt.Color.brighter
since:
JDK1.0 |
| decode | | public static Color decode(String nm) throws NumberFormatException(Code) | | Converts a String to an integer and returns the
specified opaque Color. This method handles string
formats that are used to represent octal and hexadecimal numbers.
Parameters:
nm - a String that represents an opaque color as a 24-bit integer the new Color object.
See Also: java.lang.Integer.decode
exception:
NumberFormatException - if the specified string cannotbe interpreted as a decimal, octal, or hexadecimal integer.
since:
JDK1.1 |
| equals | | public boolean equals(Object obj)(Code) | | 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.
Parameters:
obj - the object to test for equality with thisColor true if the objects are the same; false otherwise.
since:
JDK1.0 |
| getAlpha | | public int getAlpha()(Code) | | Returns the alpha component in the range 0-255.
the alpha component.
See Also: Color.getRGB |
| getBlue | | public int getBlue()(Code) | | Returns the blue component in the range 0-255 in the default sRGB
space.
the blue component.
See Also: Color.getRGB |
| getColor | | public static Color getColor(String nm, Color v)(Code) | | 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
Parameters:
v - the default Color the Color converted from the systemproperty, or the specified Color.
See Also: java.lang.System.getProperty(java.lang.String)
See Also: java.lang.Integer.getInteger(java.lang.String)
See Also: java.awt.Color.Color(int)
since:
JDK1.0 |
| getColor | | public static Color getColor(String nm, int v)(Code) | | 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
Parameters:
v - the default color value, as an integer the Color converted from the systemproperty or the Color converted fromthe specified integer.
See Also: java.lang.System.getProperty(java.lang.String)
See Also: java.lang.Integer.getInteger(java.lang.String)
See Also: java.awt.Color.Color(int)
since:
JDK1.0 |
| getColorComponents | | public float[] getColorComponents(float[] compArray)(Code) | | 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 colorcomponents of this Color in itsColorSpace and returns the color components in a float array. |
| getColorComponents | | public float[] getColorComponents(ColorSpace cspace, float[] compArray)(Code) | | Returns a float array containing only the color
components of the Color in the
ColorSpace specified by the cspace
parameter. If compArray is null, an array
with length equal to the number of components in
cspace 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:
cspace - a specified ColorSpace
Parameters:
compArray - an array that this method fills with the colorcomponents of this Color in the specifiedColorSpace the color components in a float array. |
| getColorSpace | | public ColorSpace getColorSpace()(Code) | | Returns the ColorSpace of this Color.
this Color object's ColorSpace. |
| getComponents | | public float[] getComponents(float[] compArray)(Code) | | 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 andalpha components of this Color in itsColorSpace and returns the color and alpha components in a float array. |
| getComponents | | public float[] getComponents(ColorSpace cspace, float[] compArray)(Code) | | Returns a float array containing the color and alpha
components of the Color, in the
ColorSpace specified by the cspace
parameter. If compArray is null, an
array with length equal to the number of components in
cspace 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:
cspace - a specified ColorSpace
Parameters:
compArray - an array that this method fills with thecolor and alpha components of this Color inthe specified ColorSpace and returns the color and alpha components in a float array. |
| getGreen | | public int getGreen()(Code) | | Returns the green component in the range 0-255 in the default sRGB
space.
the green component.
See Also: Color.getRGB |
| getHSBColor | | public static Color getHSBColor(float h, float s, float b)(Code) | | 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
Parameters:
s - the saturation of the color
Parameters:
b - the brightness of the color a Color object with the specified hue, saturation, and brightness.
since:
JDK1.0 |
| getRGBColorComponents | | public float[] getRGBColorComponents(float[] compArray)(Code) | | 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 the RGB components in a float array. |
| getRGBComponents | | public float[] getRGBComponents(float[] compArray)(Code) | | 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 the RGBA components in a float array. |
| getRed | | public int getRed()(Code) | | Returns the red component in the range 0-255 in the default sRGB
space.
the red component.
See Also: Color.getRGB |
| getTransparency | | public int getTransparency()(Code) | | Returns the transparency mode for this Color. This is
required to implement the Paint interface.
this Color object's transparency mode.
See Also: Paint
See Also: Transparency
See Also: Color.createContext |
| hashCode | | public int hashCode()(Code) | | Computes the hash code for this Color.
a hash code value for this object.
since:
JDK1.0 |
| toString | | public String toString()(Code) | | 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.
a string representation of this Color. |
|
|