Package com.ribs.pdf.patterns

Class PDFShadingPattern

java.lang.Object

com.ribs.pdf.PDFPattern

com.ribs.pdf.patterns.PDFShadingPattern

All Implemented Interfaces:

Paint, PaintContext, Transparency

Direct Known Subclasses:

PDFAxialShading, PDFFunctionShading, PDFRadialShading

public abstract class PDFShadingPattern
extends PDFPattern
implements PaintContext, Paint

PDFShadingPattern.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ArbitraryColorSpaceShading
static final int	DeviceGrayShading
static final int	DeviceRGBShading

Fields inherited from interface java.awt.Transparency

BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

Constructors

Constructor	Description
PDFShadingPattern(Map patternDict, Map shadingDict, PDFFile srcFile)	Constructor - patternDict may be null if this object was created from the shading operator (sh).

Method Summary

Modifier and Type	Method	Description
PaintContext	createContext(ColorModel cm, Rectangle deviceBounds, Rectangle2D userBounds, AffineTransform xform, RenderingHints hints)	Paint & PaintContext interfaces
void	dispose()
abstract void	doShading(int[] samples, int x, int y, int w, int h)	Subclasses should implement this method to draw the shading.
Rectangle2D	getBounds()
ColorModel	getColorModel()
static PDFShadingPattern	getInstance(Map dict, PDFFile srcFile)	Create an instance from a shading dictionary or a pattern dictionary.
Paint	getPaint()	Returns the awt Paint object which will render the pattern
Raster	getRaster(int x, int y, int w, int h)
int	getRGBAPixel(float[] sample_values)
AffineTransform	getTransform()	Returns the pattern space->default space transform
int	getTransparency()	Alpha & color definitions
void	initializeShadingParameters(Map shadingDict, PDFFile srcFile)	Read the shading parameters
void	setColorSpace(ColorSpace c)

Methods inherited from class com.ribs.pdf.PDFPattern

getGState, getInstance

Methods inherited from class java.lang.Object

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

Field Details

DeviceRGBShading

public static final int DeviceRGBShading

See Also:

• Constant Field Values

DeviceGrayShading

public static final int DeviceGrayShading

See Also:

• Constant Field Values

ArbitraryColorSpaceShading

public static final int ArbitraryColorSpaceShading

See Also:

• Constant Field Values

Constructor Details

PDFShadingPattern

public PDFShadingPattern(Map patternDict,
 Map shadingDict,
 PDFFile srcFile)

Constructor - patternDict may be null if this object was created from the shading operator (sh).

Method Details

getInstance

public static PDFShadingPattern getInstance(Map dict,
 PDFFile srcFile)

Create an instance from a shading dictionary or a pattern dictionary.

initializeShadingParameters

public void initializeShadingParameters(Map shadingDict,
 PDFFile srcFile)

Read the shading parameters

getTransform

public AffineTransform getTransform()

Description copied from class: PDFPattern

Returns the pattern space->default space transform

Specified by:

getTransform in class PDFPattern

getBounds

public Rectangle2D getBounds()

setColorSpace

public void setColorSpace(ColorSpace c)

getRGBAPixel

public int getRGBAPixel(float[] sample_values)

getPaint

public Paint getPaint()

Description copied from class: PDFPattern

Returns the awt Paint object which will render the pattern

Specified by:

getPaint in class PDFPattern

createContext

public PaintContext createContext(ColorModel cm,
 Rectangle deviceBounds,
 Rectangle2D userBounds,
 AffineTransform xform,
 RenderingHints hints)

Paint & PaintContext interfaces

Specified by:

createContext in interface Paint

dispose

public void dispose()

Specified by:

dispose in interface PaintContext

getRaster

public Raster getRaster(int x,
 int y,
 int w,
 int h)

Specified by:

getRaster in interface PaintContext

getTransparency

public int getTransparency()

Alpha & color definitions

Specified by:

getTransparency in interface Transparency

getColorModel

public ColorModel getColorModel()

Specified by:

getColorModel in interface PaintContext

doShading

public abstract void doShading(int[] samples,
 int x,
 int y,
 int w,
 int h)

Subclasses should implement this method to draw the shading. samples is defined to be an array of 8 bit per sample/4 samples per pixel ARGB pixels. There is no padding, so all scanlines are w integers wide.