public class RgbColor extends Color
| 构造器 | 说明 |
|---|---|
RgbColor() |
Default constructor used to create a
RgbColor instance. |
RgbColor(int rgba) |
A constructor that uses color ints (a combination of color codes) to define colors.
|
RgbColor(int red,
int green,
int blue) |
A constructor that defines a color by specifying the red, green, and blue channels.
|
RgbColor(int red,
int green,
int blue,
int alpha) |
A constructor that defines a color by specifying the red, green, blue, and alpha (transparency or opacity)
channels.
|
RgbColor(RgbColor color) |
A constructor that defines a color by replicating another
RgbColor object. |
| 限定符和类型 | 方法 | 说明 |
|---|---|---|
int |
asArgbInt() |
Obtains an integer value that represents the definition of an aRGB color.
|
int |
asRgbaInt() |
Obtains an integer value that represents the definition of an RGBa color.
|
RgbColor |
assign(RgbColor color) |
Assigns the values of another
RgbColor object to the current object. |
boolean |
equals(Object other) |
Indicates whether some other object is "equal to" this one.
|
static RgbColor |
fromArgbInt(int argb) |
Creates a new
RgbColor object based on the integer value that defines an aRGB color. |
static RgbColor |
fromRgbaInt(int rgba) |
Creates a new
RgbColor object based on the integer value that defines an RGBa color. |
int |
getBlue() |
Obtains the blue color value of a
RgbColor object. |
int |
getGreen() |
Obtains the green color value of a
RgbColor object. |
int |
getRed() |
Obtains the red color value of a
RgbColor object. |
int |
hashCode() |
Returns a hash code value for the object.
|
void |
setBlue(int blue) |
Sets the blue color value of a
RgbColor object. |
void |
setGreen(int green) |
Sets the green color value of a
RgbColor object. |
void |
setRed(int red) |
Sets the red color value of a
RgbColor object. |
public RgbColor()
RgbColor instance.public RgbColor(int rgba)
Each color int is a single 32-bit integer value. Bits 25-32 represent red, bits 17-24 green, bits 9-16 blue, and bits 1-8 transparency (or opacity).
rgba - Indicates the RGBA color code.public RgbColor(int red,
int green,
int blue)
red - Indicates the red color value, in the range 0 to 255.green - Indicates the green color value, in the range 0 to 255.blue - Indicates the blue color value, in the range 0 to 255.public RgbColor(int red,
int green,
int blue,
int alpha)
red - Indicates the red color value, in the range 0 to 255.green - Indicates the green color value, in the range 0 to 255.blue - Indicates the blue color value, in the range 0 to 255.alpha - Indicates the alpha value, in the range 0 to 255.public RgbColor(RgbColor color)
RgbColor object.color - Indicates the RgbColor object to replicate.public RgbColor assign(RgbColor color)
RgbColor object to the current object.color - Indicates the RgbColor object to assign values from.public boolean equals(Object other)
The equals method implements an equivalence relation
on non-null object references:
x, x.equals(x) should return
true.
x and y, x.equals(y)
should return true if and only if
y.equals(x) returns true.
x, y, and z, if
x.equals(y) returns true and
y.equals(z) returns true, then
x.equals(z) should return true.
x and y, multiple invocations of
x.equals(y) consistently return true
or consistently return false, provided no
information used in equals comparisons on the
objects is modified.
x,
x.equals(null) should return false.
The equals method for class Object implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x and
y, this method returns true if and only
if x and y refer to the same object
(x == y has the value true).
Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode method, which states
that equal objects must have equal hash codes.
equals 在类中 Colorother - the reference object with which to compare.true if this object is the same as the obj
argument; false otherwise.Object.hashCode(),
HashMappublic int hashCode()
HashMap.
The general contract of hashCode is:
hashCode method
must consistently return the same integer, provided no information
used in equals comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.
equals(Object)
method, then calling the hashCode method on each of
the two objects must produce the same integer result.
Object.equals(java.lang.Object)
method, then calling the hashCode method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.
As much as is reasonably practical, the hashCode method defined by
class Object does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
Java™ programming language.)
hashCode 在类中 ColorObject.equals(java.lang.Object),
System.identityHashCode(java.lang.Object)public int asRgbaInt()
public int asArgbInt()
public static RgbColor fromRgbaInt(int rgba)
RgbColor object based on the integer value that defines an RGBa color.rgba - Indicates the integer value that represents an RGBa color.RgbColor object.public static RgbColor fromArgbInt(int argb)
RgbColor object based on the integer value that defines an aRGB color.argb - Indicates the integer value that represents an aRGB color.RgbColor object.public void setRed(int red)
RgbColor object.red - Indicates the integer value indicating the red value, in the range 0 to 255.public int getRed()
RgbColor object.public void setGreen(int green)
RgbColor object.green - Indicates the integer value indicating the green value, in the range 0 to 255.public int getGreen()
RgbColor object.public void setBlue(int blue)
RgbColor object.blue - Indicates the integer value indicating the blue value, in the range 0 to 255.public int getBlue()
RgbColor object.