|
Java™ Platform Standard Ed. 6 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object java.awt.image.ColorModel java.awt.image.IndexColorModel
public class IndexColorModel
The IndexColorModel
class is a ColorModel
class that works with pixel values consisting of a
single sample that is an index into a fixed colormap in the default
sRGB color space. The colormap specifies red, green, blue, and
optional alpha components corresponding to each index. All components
are represented in the colormap as 8-bit unsigned integral values.
Some constructors allow the caller to specify "holes" in the colormap
by indicating which colormap entries are valid and which represent
unusable colors via the bits set in a BigInteger
object.
This color model is similar to an X11 PseudoColor visual.
Some constructors provide a means to specify an alpha component
for each pixel in the colormap, while others either provide no
such means or, in some cases, a flag to indicate whether the
colormap data contains alpha values. If no alpha is supplied to
the constructor, an opaque alpha component (alpha = 1.0) is
assumed for each entry.
An optional transparent pixel value can be supplied that indicates a
pixel to be made completely transparent, regardless of any alpha
component supplied or assumed for that pixel value.
Note that the color components in the colormap of an
IndexColorModel
objects are never pre-multiplied with
the alpha components.
If an IndexColorModel
object has
a transparency value of Transparency.OPAQUE
,
then the hasAlpha
and getNumComponents
methods
(both inherited from ColorModel
)
return false and 3, respectively.
For any other transparency value,
hasAlpha
returns true
and getNumComponents
returns 4.
The values used to index into the colormap are taken from the least
significant n bits of pixel representations where
n is based on the pixel size specified in the constructor.
For pixel sizes smaller than 8 bits, n is rounded up to a
power of two (3 becomes 4 and 5,6,7 become 8).
For pixel sizes between 8 and 16 bits, n is equal to the
pixel size.
Pixel sizes larger than 16 bits are not supported by this class.
Higher order bits beyond n are ignored in pixel representations.
Index values greater than or equal to the map size, but less than
2n, are undefined and return 0 for all color and
alpha components.
For those methods that use a primitive array pixel representation of
type
Many of the methods in this class are final. The reason for
this is that the underlying native graphics code makes assumptions
about the layout and operation of this class and those assumptions
are reflected in the implementations of the methods here that are
marked final. You can subclass this class for other reasons, but
you cannot override or modify the behaviour of those methods.
transferType
, the array length is always one.
The transfer types supported are DataBuffer.TYPE_BYTE
and
DataBuffer.TYPE_USHORT
. A single int pixel
representation is valid for all objects of this class, since it is
always possible to represent pixel values used with this class in a
single int. Therefore, methods that use this representation do
not throw an IllegalArgumentException
due to an invalid
pixel value.
ColorModel
,
ColorSpace
,
DataBuffer
Field Summary |
---|
Fields inherited from class java.awt.image.ColorModel |
---|
pixel_bits, transferType |
Fields inherited from interface java.awt.Transparency |
---|
BITMASK, OPAQUE, TRANSLUCENT |
Constructor Summary | |
---|---|
IndexColorModel(int bits,
int size,
byte[] r,
byte[] g,
byte[] b)
Constructs an IndexColorModel from the specified
arrays of red, green, and blue components. |
|
IndexColorModel(int bits,
int size,
byte[] r,
byte[] g,
byte[] b,
byte[] a)
Constructs an IndexColorModel from the given
arrays of red, green, blue and alpha components. |
|
IndexColorModel(int bits,
int size,
byte[] r,
byte[] g,
byte[] b,
int trans)
Constructs an IndexColorModel from the given arrays
of red, green, and blue components. |
|
IndexColorModel(int bits,
int size,
byte[] cmap,
int start,
boolean hasalpha)
Constructs an IndexColorModel from a single
array of interleaved red, green, blue and optional alpha
components. |
|
IndexColorModel(int bits,
int size,
byte[] cmap,
int start,
boolean hasalpha,
int trans)
Constructs an IndexColorModel from a single array of
interleaved red, green, blue and optional alpha components. |
|
IndexColorModel(int bits,
int size,
int[] cmap,
int start,
boolean hasalpha,
int trans,
int transferType)
Constructs an IndexColorModel from an array of
ints where each int is comprised of red, green, blue, and
optional alpha components in the default RGB color model format. |
|
IndexColorModel(int bits,
int size,
int[] cmap,
int start,
int transferType,
BigInteger validBits)
Constructs an IndexColorModel from an
int array where each int is
comprised of red, green, blue, and alpha
components in the default RGB color model format. |
Method Summary | |
---|---|
BufferedImage |
convertToIntDiscrete(Raster raster,
boolean forceARGB)
Returns a new BufferedImage of TYPE_INT_ARGB or
TYPE_INT_RGB that has a Raster with pixel data
computed by expanding the indices in the source Raster
using the color/alpha component arrays of this ColorModel . |
SampleModel |
createCompatibleSampleModel(int w,
int h)
Creates a SampleModel with the specified
width and height that has a data layout compatible with
this ColorModel . |
WritableRaster |
createCompatibleWritableRaster(int w,
int h)
Creates a WritableRaster with the specified width
and height that has a data layout (SampleModel )
compatible with this ColorModel . |
void |
finalize()
Disposes of system resources associated with this ColorModel once this ColorModel is no
longer referenced. |
int |
getAlpha(int pixel)
Returns the alpha component for the specified pixel, scaled from 0 to 255. |
void |
getAlphas(byte[] a)
Copies the array of alpha transparency components into the specified array. |
int |
getBlue(int pixel)
Returns the blue color component for the specified pixel, scaled from 0 to 255 in the default RGB ColorSpace, sRGB. |
void |
getBlues(byte[] b)
Copies the array of blue color components into the specified array. |
int[] |
getComponents(int pixel,
int[] components,
int offset)
Returns an array of unnormalized color/alpha components for a specified pixel in this ColorModel . |
int[] |
getComponents(Object pixel,
int[] components,
int offset)
Returns an array of unnormalized color/alpha components for a specified pixel in this ColorModel . |
int[] |
getComponentSize()
Returns an array of the number of bits for each color/alpha component. |
int |
getDataElement(int[] components,
int offset)
Returns a pixel value represented as an int in this ColorModel given an array of unnormalized
color/alpha components. |
Object |
getDataElements(int[] components,
int offset,
Object pixel)
Returns a data element array representation of a pixel in this ColorModel given an array of unnormalized color/alpha
components. |
Object |
getDataElements(int rgb,
Object pixel)
Returns a data element array representation of a pixel in this ColorModel, given an integer pixel representation in the default RGB color model. |
int |
getGreen(int pixel)
Returns the green color component for the specified pixel, scaled from 0 to 255 in the default RGB ColorSpace, sRGB. |
void |
getGreens(byte[] g)
Copies the array of green color components into the specified array. |
int |
getMapSize()
Returns the size of the color/alpha component arrays in this IndexColorModel . |
int |
getRed(int pixel)
Returns the red color component for the specified pixel, scaled from 0 to 255 in the default RGB ColorSpace, sRGB. |
void |
getReds(byte[] r)
Copies the array of red color components into the specified array. |
int |
getRGB(int pixel)
Returns the color/alpha components of the pixel in the default RGB color model format. |
void |
getRGBs(int[] rgb)
Converts data for each index from the color and alpha component arrays to an int in the default RGB ColorModel format and copies the resulting 32-bit ARGB values into the specified array. |
int |
getTransparency()
Returns the transparency. |
int |
getTransparentPixel()
Returns the index of a transparent pixel in this IndexColorModel or -1 if there is no pixel
with an alpha value of 0. |
BigInteger |
getValidPixels()
Returns a BigInteger that indicates the valid/invalid
pixels in the colormap. |
boolean |
isCompatibleRaster(Raster raster)
Returns true if raster is compatible
with this ColorModel or false if it
is not compatible with this ColorModel . |
boolean |
isCompatibleSampleModel(SampleModel sm)
Checks if the specified SampleModel is compatible
with this ColorModel . |
boolean |
isValid()
Returns whether or not all of the pixels are valid. |
boolean |
isValid(int pixel)
Returns whether or not the pixel is valid. |
String |
toString()
Returns the String representation of the contents of
this ColorModel object. |
Methods inherited from class java.awt.image.ColorModel |
---|
coerceData, equals, getAlpha, getAlphaRaster, getBlue, getColorSpace, getComponentSize, getDataElement, getDataElements, getGreen, getNormalizedComponents, getNormalizedComponents, getNumColorComponents, getNumComponents, getPixelSize, getRed, getRGB, getRGBdefault, getTransferType, getUnnormalizedComponents, hasAlpha, hashCode, isAlphaPremultiplied |
Methods inherited from class java.lang.Object |
---|
clone, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
---|
public IndexColorModel(int bits, int size, byte[] r, byte[] g, byte[] b)
IndexColorModel
from the specified
arrays of red, green, and blue components. Pixels described
by this color model all have alpha components of 255
unnormalized (1.0 normalized), which means they
are fully opaque. All of the arrays specifying the color
components must have at least the specified number of entries.
The ColorSpace
is the default sRGB space.
Since there is no alpha information in any of the arguments
to this constructor, the transparency value is always
Transparency.OPAQUE
.
The transfer type is the smallest of DataBuffer.TYPE_BYTE
or DataBuffer.TYPE_USHORT
that can hold a single pixel.
bits
- the number of bits each pixel occupiessize
- the size of the color component arraysr
- the array of red color componentsg
- the array of green color componentsb
- the array of blue color components
IllegalArgumentException
- if bits
is less
than 1 or greater than 16
IllegalArgumentException
- if size
is less
than 1public IndexColorModel(int bits, int size, byte[] r, byte[] g, byte[] b, int trans)
IndexColorModel
from the given arrays
of red, green, and blue components. Pixels described by this color
model all have alpha components of 255 unnormalized
(1.0 normalized), which means they are fully opaque, except
for the indicated pixel to be made transparent. All of the arrays
specifying the color components must have at least the specified
number of entries.
The ColorSpace
is the default sRGB space.
The transparency value may be Transparency.OPAQUE
or
Transparency.BITMASK
depending on the arguments, as
specified in the class description above.
The transfer type is the smallest of DataBuffer.TYPE_BYTE
or DataBuffer.TYPE_USHORT
that can hold a
single pixel.
bits
- the number of bits each pixel occupiessize
- the size of the color component arraysr
- the array of red color componentsg
- the array of green color componentsb
- the array of blue color componentstrans
- the index of the transparent pixel
IllegalArgumentException
- if bits
is less than
1 or greater than 16
IllegalArgumentException
- if size
is less than
1public IndexColorModel(int bits, int size, byte[] r, byte[] g, byte[] b, byte[] a)
IndexColorModel
from the given
arrays of red, green, blue and alpha components. All of the
arrays specifying the components must have at least the specified
number of entries.
The ColorSpace
is the default sRGB space.
The transparency value may be any of Transparency.OPAQUE
,
Transparency.BITMASK
,
or Transparency.TRANSLUCENT
depending on the arguments, as specified
in the class description above.
The transfer type is the smallest of DataBuffer.TYPE_BYTE
or DataBuffer.TYPE_USHORT
that can hold a single pixel.
bits
- the number of bits each pixel occupiessize
- the size of the color component arraysr
- the array of red color componentsg
- the array of green color componentsb
- the array of blue color componentsa
- the array of alpha value components
IllegalArgumentException
- if bits
is less
than 1 or greater than 16
IllegalArgumentException
- if size
is less
than 1public IndexColorModel(int bits, int size, byte[] cmap, int start, boolean hasalpha)
IndexColorModel
from a single
array of interleaved red, green, blue and optional alpha
components. The array must have enough values in it to
fill all of the needed component arrays of the specified
size. The ColorSpace
is the default sRGB space.
The transparency value may be any of Transparency.OPAQUE
,
Transparency.BITMASK
,
or Transparency.TRANSLUCENT
depending on the arguments, as specified
in the class description above.
The transfer type is the smallest of
DataBuffer.TYPE_BYTE
or DataBuffer.TYPE_USHORT
that can hold a single pixel.
bits
- the number of bits each pixel occupiessize
- the size of the color component arrayscmap
- the array of color componentsstart
- the starting offset of the first color componenthasalpha
- indicates whether alpha values are contained in
the cmap
array
IllegalArgumentException
- if bits
is less
than 1 or greater than 16
IllegalArgumentException
- if size
is less
than 1public IndexColorModel(int bits, int size, byte[] cmap, int start, boolean hasalpha, int trans)
IndexColorModel
from a single array of
interleaved red, green, blue and optional alpha components. The
specified transparent index represents a pixel that is made
entirely transparent regardless of any alpha value specified
for it. The array must have enough values in it to fill all
of the needed component arrays of the specified size.
The ColorSpace
is the default sRGB space.
The transparency value may be any of Transparency.OPAQUE
,
Transparency.BITMASK
,
or Transparency.TRANSLUCENT
depending on the arguments, as specified
in the class description above.
The transfer type is the smallest of
DataBuffer.TYPE_BYTE
or DataBuffer.TYPE_USHORT
that can hold a single pixel.
bits
- the number of bits each pixel occupiessize
- the size of the color component arrayscmap
- the array of color componentsstart
- the starting offset of the first color componenthasalpha
- indicates whether alpha values are contained in
the cmap
arraytrans
- the index of the fully transparent pixel
IllegalArgumentException
- if bits
is less than
1 or greater than 16
IllegalArgumentException
- if size
is less than
1public IndexColorModel(int bits, int size, int[] cmap, int start, boolean hasalpha, int trans, int transferType)
IndexColorModel
from an array of
ints where each int is comprised of red, green, blue, and
optional alpha components in the default RGB color model format.
The specified transparent index represents a pixel that is made
entirely transparent regardless of any alpha value specified
for it. The array must have enough values in it to fill all
of the needed component arrays of the specified size.
The ColorSpace
is the default sRGB space.
The transparency value may be any of Transparency.OPAQUE
,
Transparency.BITMASK
,
or Transparency.TRANSLUCENT
depending on the arguments, as specified
in the class description above.
bits
- the number of bits each pixel occupiessize
- the size of the color component arrayscmap
- the array of color componentsstart
- the starting offset of the first color componenthasalpha
- indicates whether alpha values are contained in
the cmap
arraytrans
- the index of the fully transparent pixeltransferType
- the data type of the array used to represent
pixel values. The data type must be either
DataBuffer.TYPE_BYTE
or
DataBuffer.TYPE_USHORT
.
IllegalArgumentException
- if bits
is less
than 1 or greater than 16
IllegalArgumentException
- if size
is less
than 1
IllegalArgumentException
- if transferType
is not
one of DataBuffer.TYPE_BYTE
or
DataBuffer.TYPE_USHORT
public IndexColorModel(int bits, int size, int[] cmap, int start, int transferType, BigInteger validBits)
IndexColorModel
from an
int
array where each int
is
comprised of red, green, blue, and alpha
components in the default RGB color model format.
The array must have enough values in it to fill all
of the needed component arrays of the specified size.
The ColorSpace
is the default sRGB space.
The transparency value may be any of Transparency.OPAQUE
,
Transparency.BITMASK
,
or Transparency.TRANSLUCENT
depending on the arguments, as specified
in the class description above.
The transfer type must be one of DataBuffer.TYPE_BYTE
DataBuffer.TYPE_USHORT
.
The BigInteger
object specifies the valid/invalid pixels
in the cmap
array. A pixel is valid if the
BigInteger
value at that index is set, and is invalid
if the BigInteger
bit at that index is not set.
bits
- the number of bits each pixel occupiessize
- the size of the color component arraycmap
- the array of color componentsstart
- the starting offset of the first color componenttransferType
- the specified data typevalidBits
- a BigInteger
object. If a bit is
set in the BigInteger, the pixel at that index is valid.
If a bit is not set, the pixel at that index
is considered invalid. If null, all pixels are valid.
Only bits from 0 to the map size are considered.
IllegalArgumentException
- if bits
is less
than 1 or greater than 16
IllegalArgumentException
- if size
is less
than 1
IllegalArgumentException
- if transferType
is not
one of DataBuffer.TYPE_BYTE
or
DataBuffer.TYPE_USHORT
Method Detail |
---|
public int getTransparency()
getTransparency
in interface Transparency
getTransparency
in class ColorModel
IndexColorModel
Transparency.OPAQUE
,
Transparency.BITMASK
,
Transparency.TRANSLUCENT
public int[] getComponentSize()
getComponentSize
in class ColorModel
IndexColorModel
public final int getMapSize()
IndexColorModel
.
public final int getTransparentPixel()
IndexColorModel
or -1 if there is no pixel
with an alpha value of 0. If a transparent pixel was
explicitly specified in one of the constructors by its
index, then that index will be preferred, otherwise,
the index of any pixel which happens to be fully transparent
may be returned.
IndexColorModel
object, or -1 if there
is no such pixelpublic final void getReds(byte[] r)
getMapSize
are written.
r
- the specified array into which the elements of the
array of red color components are copiedpublic final void getGreens(byte[] g)
getMapSize
are written.
g
- the specified array into which the elements of the
array of green color components are copiedpublic final void getBlues(byte[] b)
getMapSize
are written.
b
- the specified array into which the elements of the
array of blue color components are copiedpublic final void getAlphas(byte[] a)
getMapSize
are written.
a
- the specified array into which the elements of the
array of alpha components are copiedpublic final void getRGBs(int[] rgb)
getMapSize
are
written.
rgb
- the specified array into which the converted ARGB
values from this array of color and alpha components
are copied.public final int getRed(int pixel)
getRed
in class ColorModel
pixel
- the specified pixel
public final int getGreen(int pixel)
getGreen
in class ColorModel
pixel
- the specified pixel
public final int getBlue(int pixel)
getBlue
in class ColorModel
pixel
- the specified pixel
public final int getAlpha(int pixel)
getAlpha
in class ColorModel
pixel
- the specified pixel
public final int getRGB(int pixel)
getRGB
in class ColorModel
pixel
- the specified pixel
ColorModel.getRGBdefault()
public Object getDataElements(int rgb, Object pixel)
setDataElements
method of a WritableRaster
object. If the pixel variable is
null
, a new array is allocated. If pixel
is not null
, it must be
a primitive array of type transferType
; otherwise, a
ClassCastException
is thrown. An
ArrayIndexOutOfBoundsException
is
thrown if pixel
is not large enough to hold a pixel
value for this ColorModel
. The pixel array is returned.
Since IndexColorModel
can be subclassed, subclasses
inherit the implementation of this method and if they don't
override it then they throw an exception if they use an
unsupported transferType
.
getDataElements
in class ColorModel
rgb
- the integer pixel representation in the default RGB
color modelpixel
- the specified pixel
IndexColorModel
.
ClassCastException
- if pixel
is not a primitive array of type transferType
ArrayIndexOutOfBoundsException
- if
pixel
is not large enough to hold a pixel value
for this ColorModel
UnsupportedOperationException
- if transferType
is invalidWritableRaster.setDataElements(int, int, java.lang.Object)
,
SampleModel.setDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer)
public int[] getComponents(int pixel, int[] components, int offset)
ColorModel
. The pixel value
is specified as an int. If the components
array is null
,
a new array is allocated that contains
offset + getNumComponents()
elements.
The components
array is returned,
with the alpha component included
only if hasAlpha
returns true.
Color/alpha components are stored in the components
array starting
at offset
even if the array is allocated by this method.
An ArrayIndexOutOfBoundsException
is thrown if the components
array is not null
and is
not large enough to hold all the color and alpha components
starting at offset
.
getComponents
in class ColorModel
pixel
- the specified pixelcomponents
- the array to receive the color and alpha
components of the specified pixeloffset
- the offset into the components
array at
which to start storing the color and alpha components
ColorModel.hasAlpha()
,
ColorModel.getNumComponents()
public int[] getComponents(Object pixel, int[] components, int offset)
ColorModel
. The pixel
value is specified by an array of data elements of type
transferType
passed in as an object reference.
If pixel
is not a primitive array of type
transferType
, a ClassCastException
is thrown. An ArrayIndexOutOfBoundsException
is thrown if pixel
is not large enough to hold
a pixel value for this ColorModel
. If the
components
array is null
, a new array
is allocated that contains
offset + getNumComponents()
elements.
The components
array is returned,
with the alpha component included
only if hasAlpha
returns true.
Color/alpha components are stored in the components
array starting at offset
even if the array is
allocated by this method. An
ArrayIndexOutOfBoundsException
is also
thrown if the components
array is not
null
and is not large enough to hold all the color
and alpha components starting at offset
.
Since IndexColorModel
can be subclassed, subclasses
inherit the implementation of this method and if they don't
override it then they throw an exception if they use an
unsupported transferType
.
getComponents
in class ColorModel
pixel
- the specified pixelcomponents
- an array that receives the color and alpha
components of the specified pixeloffset
- the index into the components
array at
which to begin storing the color and alpha components of the
specified pixel
ArrayIndexOutOfBoundsException
- if pixel
is not large enough to hold a pixel value for this
ColorModel
or if the
components
array is not null
and is not large enough to hold all the color
and alpha components starting at offset
ClassCastException
- if pixel
is not a
primitive array of type transferType
UnsupportedOperationException
- if transferType
is not one of the supported transer typesColorModel.hasAlpha()
,
ColorModel.getNumComponents()
public int getDataElement(int[] components, int offset)
ColorModel
given an array of unnormalized
color/alpha components. An
ArrayIndexOutOfBoundsException
is thrown if the components
array is not large
enough to hold all of the color and alpha components starting
at offset
. Since
ColorModel
can be subclassed, subclasses inherit the
implementation of this method and if they don't override it then
they throw an exception if they use an unsupported transferType.
getDataElement
in class ColorModel
components
- an array of unnormalized color and alpha
componentsoffset
- the index into components
at which to
begin retrieving the color and alpha components
int
pixel value in this
ColorModel
corresponding to the specified components.
ArrayIndexOutOfBoundsException
- if
the components
array is not large enough to
hold all of the color and alpha components starting at
offset
UnsupportedOperationException
- if transferType
is invalidpublic Object getDataElements(int[] components, int offset, Object pixel)
ColorModel
given an array of unnormalized color/alpha
components. This array can then be passed to the
setDataElements
method of a WritableRaster
object. An ArrayIndexOutOfBoundsException
is
thrown if the
components
array is not large enough to hold all of the
color and alpha components starting at offset
.
If the pixel variable is null
, a new array
is allocated. If pixel
is not null
,
it must be a primitive array of type transferType
;
otherwise, a ClassCastException
is thrown.
An ArrayIndexOutOfBoundsException
is thrown if pixel
is not large enough to hold a pixel value for this
ColorModel
.
Since IndexColorModel
can be subclassed, subclasses
inherit the implementation of this method and if they don't
override it then they throw an exception if they use an
unsupported transferType
getDataElements
in class ColorModel
components
- an array of unnormalized color and alpha
componentsoffset
- the index into components
at which to
begin retrieving color and alpha componentspixel
- the Object
representing an array of color
and alpha components
Object
representing an array of color and
alpha components.
ClassCastException
- if pixel
is not a primitive array of type transferType
ArrayIndexOutOfBoundsException
- if
pixel
is not large enough to hold a pixel value
for this ColorModel
or the components
array is not large enough to hold all of the color and alpha
components starting at offset
UnsupportedOperationException
- if transferType
is not one of the supported transer typesWritableRaster.setDataElements(int, int, java.lang.Object)
,
SampleModel.setDataElements(int, int, java.lang.Object, java.awt.image.DataBuffer)
public WritableRaster createCompatibleWritableRaster(int w, int h)
WritableRaster
with the specified width
and height that has a data layout (SampleModel
)
compatible with this ColorModel
. This method
only works for color models with 16 or fewer bits per pixel.
Since IndexColorModel
can be subclassed, any
subclass that supports greater than 16 bits per pixel must
override this method.
createCompatibleWritableRaster
in class ColorModel
w
- the width to apply to the new WritableRaster
h
- the height to apply to the new WritableRaster
WritableRaster
object with the specified
width and height.
UnsupportedOperationException
- if the number of bits in a
pixel is greater than 16WritableRaster
,
SampleModel
public boolean isCompatibleRaster(Raster raster)
true
if raster
is compatible
with this ColorModel
or false
if it
is not compatible with this ColorModel
.
isCompatibleRaster
in class ColorModel
raster
- the Raster
object to test for compatibility
true
if raster
is compatible
with this ColorModel
; false
otherwise.public SampleModel createCompatibleSampleModel(int w, int h)
SampleModel
with the specified
width and height that has a data layout compatible with
this ColorModel
.
createCompatibleSampleModel
in class ColorModel
w
- the width to apply to the new SampleModel
h
- the height to apply to the new SampleModel
SampleModel
object with the specified
width and height.
IllegalArgumentException
- if w
or
h
is not greater than 0SampleModel
public boolean isCompatibleSampleModel(SampleModel sm)
SampleModel
is compatible
with this ColorModel
. If sm
is
null
, this method returns false
.
isCompatibleSampleModel
in class ColorModel
sm
- the specified SampleModel
,
or null
true
if the specified SampleModel
is compatible with this ColorModel
; false
otherwise.SampleModel
public BufferedImage convertToIntDiscrete(Raster raster, boolean forceARGB)
BufferedImage
of TYPE_INT_ARGB or
TYPE_INT_RGB that has a Raster
with pixel data
computed by expanding the indices in the source Raster
using the color/alpha component arrays of this ColorModel
.
Only the lower n bits of each index value in the source
Raster
, as specified in the
class description above, are used to
compute the color/alpha values in the returned image.
If forceARGB
is true
, a TYPE_INT_ARGB image is
returned regardless of whether or not this ColorModel
has an alpha component array or a transparent pixel.
raster
- the specified Raster
forceARGB
- if true
, the returned
BufferedImage
is TYPE_INT_ARGB; otherwise it is
TYPE_INT_RGB
BufferedImage
created with the specified
Raster
IllegalArgumentException
- if the raster argument is not
compatible with this IndexColorModelpublic boolean isValid(int pixel)
pixel
- the specified pixel value
true
if pixel
is valid; false
otherwise.public boolean isValid()
true
if all pixels are valid;
false
otherwise.public BigInteger getValidPixels()
BigInteger
that indicates the valid/invalid
pixels in the colormap. A bit is valid if the
BigInteger
value at that index is set, and is invalid
if the BigInteger
value at that index is not set.
The only valid ranges to query in the BigInteger
are
between 0 and the map size.
BigInteger
indicating the valid/invalid pixels.public void finalize()
ColorModel
once this ColorModel
is no
longer referenced.
finalize
in class ColorModel
public String toString()
String
representation of the contents of
this ColorModel
object.
toString
in class ColorModel
String
representing the contents of this
ColorModel
object.
|
Java™ Platform Standard Ed. 6 |
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Copyright © 1993, 2010, Oracle and/or its affiliates. All rights reserved.