org.jpedal.color

Class GenericColorSpace

java.lang.Object

org.jpedal.color.GenericColorSpace

Direct Known Subclasses:

CalGrayColorSpace, CalRGBColorSpace, DeviceCMYKColorSpace, DeviceGrayColorSpace, DeviceRGBColorSpace, ICCColorSpace, LabColorSpace, PatternColorSpace, SeparationColorSpace

public class GenericColorSpace
extends Object

Provides Color functionality and conversion for pdf decoding

Field Summary

Fields

Modifier and Type	Field and Description
static String	cb
static String	ce
static boolean	fasterPNG enables optimisations for PDF output - enabled with jvm flag org.jpedal.fasterPNG

Method Summary

Modifier and Type	Method and Description
protected static BufferedImage	cleanupImage(BufferedImage image, int pX, int pY)
protected static Raster	cleanupRaster(Raster ras, int pX, int pY, int comp)
void	clearCache() method to flush any caching values for cases where may need resetting (ie in CMYK where restore will render last values in setColor used for caching invalid
byte[]	convertIndexToRGB(byte[] index) convert Index to RGB
BufferedImage	dataToRGB(byte[] data, int w, int h) convert color content of data to sRGB data
byte[]	dataToRGBByteArray(byte[] data, int w, int h) default RGB implementation just returns data
int	getAlternateColorSpace()
PdfPaint	getColor() get color
int	getColorComponentCount() return number of values used for color (ie 3 for rgb)
ColorSpace	getColorSpace() return the set Java colorspace
static ColorSpace	getColorSpaceInstance()
int	getID() get colorspace ID
protected int	getIndexedColorComponent(int count) lookup a component for index colorspace
byte[]	getIndexedMap() return indexed COlorMap
int	getIndexSize() get size
int	getRawColorSpacePDFType()
float[]	getRawValues() return raw values - only currently works for CMYK
String	getXMLColorToken() get an xml string with the color info
protected static void	initCMYKColorspace() initialise all the colorspaces when first needed
void	invalidateCaching(int color)
boolean	isImageYCCK() flag to show if YCCK image decoded so we can draw attention to user
boolean	isIndexConverted()
boolean	isInvalid()
BufferedImage	JPEG2000ToImage(byte[] data, int pX, int pY)
BufferedImage	JPEG2000ToRGBImage(byte[] data, int w, int h, int pX, int pY, int d) convert byte[] datastream JPEG to an image in RGB
BufferedImage	JPEGToRGBImage(byte[] data, int w, int h, int pX, int pY) convert byte[] datastream JPEG to an image in RGB
protected BufferedImage	nonRGBJPEGToRGBImage(byte[] data, int w, int h, int pX, int pY) Convert DCT encoded image bytestream to sRGB
protected void	setAlternateColorSpace(int alt)
void	setCIEValues(float[] W, float[] R, float[] Ma, float[] G) create a CIE values for conversion to RGB colorspace
void	setColor(float[] value, int operandCount) convert color value to sRGB color
void	setColor(PdfPaint col) used by generic decoder to asign color
void	setColor(String[] value, int operandCount) convert color value to sRGB color
void	setGS(GraphicsState currentGraphicsState) pattern colorspace needs access to graphicsState
void	setIndex(byte[] IndexedColorMap, int size)
void	setPattern(Map patterns) pass in list of patterns
void	setPrinting(boolean isPrinting)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

cb

public static final String cb

See Also:

Constant Field Values

ce

public static final String ce

See Also:

Constant Field Values

fasterPNG

public static boolean fasterPNG

enables optimisations for PDF output - enabled with jvm flag org.jpedal.fasterPNG

Method Detail

setPrinting

public void setPrinting(boolean isPrinting)

initCMYKColorspace

protected static void initCMYKColorspace()

initialise all the colorspaces when first needed

isInvalid

public boolean isInvalid()

getIndexSize

public int getIndexSize()

get size

getColor

public PdfPaint getColor()

get color

getColorSpace

public ColorSpace getColorSpace()

return the set Java colorspace

setAlternateColorSpace

protected void setAlternateColorSpace(int alt)

getAlternateColorSpace

public int getAlternateColorSpace()

nonRGBJPEGToRGBImage

protected final BufferedImage nonRGBJPEGToRGBImage(byte[] data,
                                                   int w,
                                                   int h,
                                                   int pX,
                                                   int pY)

Convert DCT encoded image bytestream to sRGB

It uses the internal Java classes and the Adobe icm to convert CMYK and YCbCr-Alpha - the data is still DCT encoded.

The Sun class JPEGDecodeParam.java is worth examining because it contains lots of interesting comments

I tried just using the new IOImage.read() but on type 3 images, all my clipping code stopped working so I am still using 1.3

cleanupImage

protected static BufferedImage cleanupImage(BufferedImage image,
                                            int pX,
                                            int pY)

cleanupRaster

protected static Raster cleanupRaster(Raster ras,
                                      int pX,
                                      int pY,
                                      int comp)

setIndex

public void setIndex(byte[] IndexedColorMap,
                     int size)

getIndexedColorComponent

protected int getIndexedColorComponent(int count)

lookup a component for index colorspace

getIndexedMap

public byte[] getIndexedMap()

return indexed COlorMap

setColor

public void setColor(String[] value,
                     int operandCount)

convert color value to sRGB color

setColor

public void setColor(float[] value,
                     int operandCount)

convert color value to sRGB color

JPEGToRGBImage

public BufferedImage JPEGToRGBImage(byte[] data,
                                    int w,
                                    int h,
                                    int pX,
                                    int pY)

convert byte[] datastream JPEG to an image in RGB

JPEG2000ToRGBImage

public BufferedImage JPEG2000ToRGBImage(byte[] data,
                                        int w,
                                        int h,
                                        int pX,
                                        int pY,
                                        int d)
                                 throws PdfException

convert byte[] datastream JPEG to an image in RGB

Throws:

PdfException

dataToRGBByteArray

public byte[] dataToRGBByteArray(byte[] data,
                                 int w,
                                 int h)

default RGB implementation just returns data

dataToRGB

public BufferedImage dataToRGB(byte[] data,
                               int w,
                               int h)

convert color content of data to sRGB data

getID

public int getID()

get colorspace ID

setCIEValues

public final void setCIEValues(float[] W,
                               float[] R,
                               float[] Ma,
                               float[] G)

create a CIE values for conversion to RGB colorspace

convertIndexToRGB

public byte[] convertIndexToRGB(byte[] index)

convert Index to RGB

getXMLColorToken

public String getXMLColorToken()

get an xml string with the color info

setPattern

public void setPattern(Map patterns)

pass in list of patterns

setColor

public void setColor(PdfPaint col)

used by generic decoder to asign color

getColorComponentCount

public int getColorComponentCount()

return number of values used for color (ie 3 for rgb)

setGS

public void setGS(GraphicsState currentGraphicsState)

pattern colorspace needs access to graphicsState

getRawValues

public float[] getRawValues()

return raw values - only currently works for CMYK

isImageYCCK

public boolean isImageYCCK()

flag to show if YCCK image decoded so we can draw attention to user

Returns:

isIndexConverted

public boolean isIndexConverted()

clearCache

public void clearCache()

method to flush any caching values for cases where may need resetting (ie in CMYK where restore will render last values in setColor used for caching invalid

getColorSpaceInstance

public static ColorSpace getColorSpaceInstance()

getRawColorSpacePDFType

public int getRawColorSpacePDFType()

JPEG2000ToImage

public BufferedImage JPEG2000ToImage(byte[] data,
                                     int pX,
                                     int pY)
                              throws PdfException

Throws:

PdfException

invalidateCaching

public void invalidateCaching(int color)