Package com.inductiveautomation.rm.pdf.reader.fps

Class AxialShading

java.lang.Object

com.inductiveautomation.rm.pdf.reader.PDFPattern

com.inductiveautomation.rm.pdf.reader.fps.ShadingPattern

com.inductiveautomation.rm.pdf.reader.fps.AxialShading

All Implemented Interfaces:

Paint, PaintContext, Transparency

public class AxialShading
extends ShadingPattern

Implementation of Type 2 shadings, which vary color along a linear axis.

The shading takes a pixel in the area to be to filled and drops a perpendicular to the axis defined by coords[]. It then calculates the parametric point t of the intersection, with t running from domain[0] to domain[1] along the axis. t is then turned into a color value using the supplied pdf function. TODO: currently ignores transform

Field Summary

Fields inherited from class com.inductiveautomation.rm.pdf.reader.fps.ShadingPattern

ArbitraryColorSpaceShading, DeviceGrayShading, DeviceRGBShading

Fields inherited from interface java.awt.Transparency

BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

Constructors

Constructor	Description
AxialShading(Map patternDict, Map shadingDict, PDFFile srcFile)

Method Summary

Modifier and Type	Method	Description
void	doShading(int[] samples, int x, int y, int w, int h)	Subclasses should implement this method to draw the shading.
void	initializeShadingParameters(Map shadingDict, PDFFile srcFile)	Read the shading parameters
void	setDeviceTransform(AffineTransform x, Rectangle devRect)	Sets the transform from user space to device space

Methods inherited from class com.inductiveautomation.rm.pdf.reader.fps.ShadingPattern

createContext, dispose, getBounds, getColorModel, getInstance, getPaint, getRaster, getRGBAPixel, getTransform, getTransparency, setColorSpace

Methods inherited from class com.inductiveautomation.rm.pdf.reader.PDFPattern

getGState, getInstance

Methods inherited from class java.lang.Object

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

Constructor Details

AxialShading

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

Method Details

initializeShadingParameters

public void initializeShadingParameters(Map shadingDict,
 PDFFile srcFile)

Read the shading parameters

Overrides:

initializeShadingParameters in class ShadingPattern

doShading

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

Description copied from class: ShadingPattern

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

Specified by:

doShading in class ShadingPattern

setDeviceTransform

public void setDeviceTransform(AffineTransform x,
 Rectangle devRect)

Sets the transform from user space to device space

Overrides:

setDeviceTransform in class ShadingPattern