Package com.reportmill.pdf

Class PDFPageBuffer

java.lang.Object

com.reportmill.base.RMObject

com.reportmill.pdf.PDFBuffer

com.reportmill.pdf.PDFPageBuffer

All Implemented Interfaces:

RMArchiver.Archiving, Cloneable

public class PDFPageBuffer
extends PDFBuffer

This class is a subclass of PDFBuffer, that knows how to write an RMPage and its shapes. It maintains graphics state to avoid unnecessary marking operators.

Field Summary

Fields

Modifier and Type	Field	Description
static final byte	OPACITY_FILL_ONLY
static final byte	OPACITY_STROKE_AND_FILL
static final byte	OPACITY_STROKE_ONLY

Constructor Summary

Constructors

Constructor	Description
PDFPageBuffer(PDFPage aPage)	Creates a new PDFWriter.

Method Summary

Modifier and Type	Method	Description
PDFPage	getPage()	Returns the pdf page for this page bufer.
void	grestore()	Restores the last graphics state of the writer.
void	gsave()	Saves the current graphics state of the writer.
void	setFillColor(RMColor aColor)	Sets the given color to be the current fill color.
void	setLineCap(int cap)	Sets the line cap: 0=butt, 1=round, 2=square.
void	setLineJoin(int join)	Sets the line join: 0=miter, 1=round, 2=bevel
void	setOpacity(float anOpacity, byte coverage)	Sets the opacity to be the following value, for stroke operations, fill operations or both.
void	setShading(RMGradientFill gradient, RMShape aShape, RMPath aPath)	Sets the current shading pattern to the gradient specified by the given RMGradientFill
void	setStrokeColor(RMColor aColor)	Sets the given color to be the current stroke color.
void	setStrokeWidth(float aWidth)	Sets the given line width to be the current line width.
void	writeFill(RMFill aFill, RMPath aPath)	Writes PDF for a plain RMFill.
void	writeGradientFill(RMGradientFill gradient, RMShape aShape, RMPath aPath)	Writes pdf for the path filled with a shading pattern defined by the RMGradientFill
void	writeShapeFill(RMShape aShape, RMFill aFill, RMPath aPath, PDFFile pFile)	Writes PDF for an individual shape fill.
void	writeStroke(RMStroke aStroke, RMPath aPath)	Writes PDF for a plain RMStroke.

Methods inherited from class com.reportmill.pdf.PDFBuffer

append, append, append, curveTo, length, lineTo, moveTo, print, print, print, print, print, print, print, println, println, println, println, printPDFString, quadTo, toByteArray, transform, transform

Methods inherited from class com.reportmill.base.RMObject

clone, copy, didChange, didUndo, getAnimAttribute, getClassNameShort, initWithArchiver, undoClone, undoCopy, undoEquals

Methods inherited from class java.lang.Object

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

Field Details

OPACITY_STROKE_ONLY

public static final byte OPACITY_STROKE_ONLY

See Also:

• Constant Field Values

OPACITY_STROKE_AND_FILL

public static final byte OPACITY_STROKE_AND_FILL

See Also:

• Constant Field Values

OPACITY_FILL_ONLY

public static final byte OPACITY_FILL_ONLY

See Also:

• Constant Field Values

Constructor Details

PDFPageBuffer

public PDFPageBuffer(PDFPage aPage)

Creates a new PDFWriter.

Method Details

getPage

public PDFPage getPage()

Returns the pdf page for this page bufer.

writeShapeFill

public void writeShapeFill(RMShape aShape,
 RMFill aFill,
 RMPath aPath,
 PDFFile pFile)

Writes PDF for an individual shape fill.

writeStroke

public void writeStroke(RMStroke aStroke,
 RMPath aPath)

Writes PDF for a plain RMStroke.

writeFill

public void writeFill(RMFill aFill,
 RMPath aPath)

Writes PDF for a plain RMFill.

setFillColor

public void setFillColor(RMColor aColor)

Sets the given color to be the current fill color.

writeGradientFill

public void writeGradientFill(RMGradientFill gradient,
 RMShape aShape,
 RMPath aPath)

Writes pdf for the path filled with a shading pattern defined by the RMGradientFill

setShading

public void setShading(RMGradientFill gradient,
 RMShape aShape,
 RMPath aPath)

Sets the current shading pattern to the gradient specified by the given RMGradientFill

setStrokeColor

public void setStrokeColor(RMColor aColor)

Sets the given color to be the current stroke color.

setOpacity

public void setOpacity(float anOpacity,
 byte coverage)

Sets the opacity to be the following value, for stroke operations, fill operations or both. Stupidly, there's no setOpacity or setRGBAColor op in PDF, so you have to modify the gstate parameter dict directly using the generic graphics state operator gs, which takes a name of a gstate map in page's ExtGState map (we have to add this silly little gstate map manually for each unique opacity).

setStrokeWidth

public void setStrokeWidth(float aWidth)

Sets the given line width to be the current line width.

setLineCap

public void setLineCap(int cap)

Sets the line cap: 0=butt, 1=round, 2=square.

setLineJoin

public void setLineJoin(int join)

Sets the line join: 0=miter, 1=round, 2=bevel

gsave

public void gsave()

Saves the current graphics state of the writer.

grestore

public void grestore()

Restores the last graphics state of the writer.