Class GouraudShadingContext
- java.lang.Object
-
- org.apache.pdfbox.pdmodel.graphics.shading.ShadingContext
-
- org.apache.pdfbox.pdmodel.graphics.shading.TriangleBasedShadingContext
-
- org.apache.pdfbox.pdmodel.graphics.shading.GouraudShadingContext
-
- All Implemented Interfaces:
java.awt.PaintContext
- Direct Known Subclasses:
Type4ShadingContext
,Type5ShadingContext
abstract class GouraudShadingContext extends TriangleBasedShadingContext
Shades Gouraud triangles for Type4ShadingContext and Type5ShadingContext.
-
-
Field Summary
Fields Modifier and Type Field Description private java.util.List<ShadedTriangle>
triangleList
triangle list.
-
Constructor Summary
Constructors Modifier Constructor Description protected
GouraudShadingContext(PDShading shading, java.awt.image.ColorModel colorModel, java.awt.geom.AffineTransform xform, Matrix matrix)
Constructor creates an instance to be used for fill operations.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected java.util.Map<java.awt.Point,java.lang.Integer>
calcPixelTable(java.awt.Rectangle deviceBounds)
Calculate every point and its color and store them in a Hash table.void
dispose()
protected boolean
isDataEmpty()
Returns true if the shading has an empty data stream.(package private) void
setTriangleList(java.util.List<ShadedTriangle> triangleList)
-
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
-
-
-
-
Field Detail
-
triangleList
private java.util.List<ShadedTriangle> triangleList
triangle list.
-
-
Constructor Detail
-
GouraudShadingContext
protected GouraudShadingContext(PDShading shading, java.awt.image.ColorModel colorModel, java.awt.geom.AffineTransform xform, Matrix matrix) throws java.io.IOException
Constructor creates an instance to be used for fill operations.- Parameters:
shading
- the shading type to be usedcolorModel
- the color model to be usedxform
- transformation for user to device spacematrix
- the pattern matrix concatenated with that of the parent content stream- Throws:
java.io.IOException
- if something went wrong
-
-
Method Detail
-
setTriangleList
final void setTriangleList(java.util.List<ShadedTriangle> triangleList)
-
calcPixelTable
protected java.util.Map<java.awt.Point,java.lang.Integer> calcPixelTable(java.awt.Rectangle deviceBounds) throws java.io.IOException
Description copied from class:TriangleBasedShadingContext
Calculate every point and its color and store them in a Hash table.- Specified by:
calcPixelTable
in classTriangleBasedShadingContext
- Returns:
- a Hash table which contains all the points' positions and colors of one image
- Throws:
java.io.IOException
-
dispose
public void dispose()
- Specified by:
dispose
in interfacejava.awt.PaintContext
- Overrides:
dispose
in classTriangleBasedShadingContext
-
isDataEmpty
protected boolean isDataEmpty()
Description copied from class:TriangleBasedShadingContext
Returns true if the shading has an empty data stream.- Specified by:
isDataEmpty
in classTriangleBasedShadingContext
-
-