Package org.apache.pdfbox.pdmodel.graphics.shading

Class Type4ShadingContext

java.lang.Object

org.apache.pdfbox.pdmodel.graphics.shading.ShadingContext

org.apache.pdfbox.pdmodel.graphics.shading.TriangleBasedShadingContext

org.apache.pdfbox.pdmodel.graphics.shading.GouraudShadingContext

org.apache.pdfbox.pdmodel.graphics.shading.Type4ShadingContext

All Implemented Interfaces:

java.awt.PaintContext

class Type4ShadingContext
extends GouraudShadingContext

AWT PaintContext for Gouraud Triangle Mesh (Type 4) shading.

Field Summary

Fields

Modifier and Type	Field	Description
private int	bitsPerFlag
private static org.apache.commons.logging.Log	LOG

Fields inherited from class org.apache.pdfbox.pdmodel.graphics.shading.TriangleBasedShadingContext

bitsPerColorComponent, bitsPerCoordinate, numberOfColorComponents

Constructor Summary

Constructors

Constructor	Description
Type4ShadingContext(PDShadingType4 shading, java.awt.image.ColorModel cm, java.awt.geom.AffineTransform xform, Matrix matrix, java.awt.Rectangle deviceBounds)	Constructor creates an instance to be used for fill operations.

Method Summary

Modifier and Type	Method	Description
private java.util.List<ShadedTriangle>	collectTriangles(PDShadingType4 freeTriangleShadingType, java.awt.geom.AffineTransform xform, Matrix matrix)

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.shading.GouraudShadingContext

calcPixelTable, dispose, isDataEmpty, readVertex, setTriangleList

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.shading.TriangleBasedShadingContext

calcPixelTable, createPixelTable, getColorModel, getRaster

Methods inherited from class org.apache.pdfbox.pdmodel.graphics.shading.ShadingContext

convertToRGB, getBackground, getRgbBackground, getShading, getShadingColorSpace

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.apache.commons.logging.Log LOG

bitsPerFlag

private final int bitsPerFlag

Constructor Detail

Type4ShadingContext

Type4ShadingContext(PDShadingType4 shading,
                    java.awt.image.ColorModel cm,
                    java.awt.geom.AffineTransform xform,
                    Matrix matrix,
                    java.awt.Rectangle deviceBounds)
             throws java.io.IOException

Constructor creates an instance to be used for fill operations.

Parameters:

shading - the shading type to be used

cm - the color model to be used

xform - transformation for user to device space

matrix - the pattern matrix concatenated with that of the parent content stream

Throws:

java.io.IOException

Method Detail

collectTriangles

private java.util.List<ShadedTriangle> collectTriangles(PDShadingType4 freeTriangleShadingType,
                                                        java.awt.geom.AffineTransform xform,
                                                        Matrix matrix)
                                                 throws java.io.IOException

Throws:

java.io.IOException