Package org.apache.pdfbox.rendering

Class PageDrawer

java.lang.Object

org.apache.pdfbox.contentstream.PDFStreamEngine

org.apache.pdfbox.contentstream.PDFGraphicsStreamEngine

org.apache.pdfbox.rendering.PageDrawer

public class PageDrawer
extends PDFGraphicsStreamEngine

Paints a page in a PDF document to a Graphics context. May be subclassed to provide custom rendering.

If you want to do custom graphics processing rather than Graphics2D rendering, then you should subclass PDFGraphicsStreamEngine instead. Subclassing PageDrawer is only suitable for cases where the goal is to render onto a Graphics2D surface. In that case you'll also have to subclass PDFRenderer and override PDFRenderer.createPageDrawer(PageDrawerParameters). See the OpaquePDFRenderer.java example in the source code download on how to do this.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	PageDrawer.TransparencyGroup	Transparency group.

Field Summary

Fields

Modifier and Type	Field	Description
private AnnotationFilter	annotationFilter	Default annotations filter, returns all annotations
private java.util.Map<COSBase,java.lang.Boolean>	blendModeMap
private int	clipWindingRule
private RenderDestination	destination
private boolean	flipTG
private java.util.Map<PDFont,GlyphCache>	glyphCaches
private java.awt.Graphics2D	graphics
private float	imageDownscalingOptimizationThreshold
private java.awt.Shape	initialClip
private java.awt.image.LookupTable	invTable
private static boolean	IS_LINUX
private static boolean	IS_WINDOWS
private java.util.List<java.awt.geom.Path2D>	lastClips
private java.awt.geom.GeneralPath	linePath
private static org.apache.commons.logging.Log	LOG
private int	nestedHiddenOCGCount
private static java.lang.String	OS_NAME
private PDRectangle	pageSize
private PDFRenderer	renderer
private java.awt.RenderingHints	renderingHints
private boolean	subsamplingAllowed
private java.util.List<java.awt.Shape>	textClippings
private TilingPaintFactory	tilingPaintFactory
private java.util.Deque<PageDrawer.TransparencyGroup>	transparencyGroupStack
private java.awt.geom.AffineTransform	xform
private float	xformScalingFactorX
private float	xformScalingFactorY

Constructor Summary

Constructors

Constructor	Description
PageDrawer(PageDrawerParameters parameters)	Constructor.

Method Summary

Modifier and Type	Method	Description
private java.awt.geom.GeneralPath	adjustClip(java.awt.geom.GeneralPath linePath)	PDFBOX-5715 / PR#73: This was added to fix a problem with missing fine lines when printing on MacOS.
private java.awt.image.BufferedImage	adjustImage(java.awt.image.BufferedImage gray)
void	appendRectangle(java.awt.geom.Point2D p0, java.awt.geom.Point2D p1, java.awt.geom.Point2D p2, java.awt.geom.Point2D p3)	Append a rectangle to the current path.
private java.awt.Paint	applySoftMaskToPaint(java.awt.Paint parentPaint, PDSoftMask softMask)
private java.awt.image.BufferedImage	applyTransferFunction(java.awt.image.BufferedImage image, COSBase transfer)
void	beginMarkedContentSequence(COSName tag, COSDictionary properties)	Called when a marked content group begins
void	beginText()	Called when the BT operator is encountered.
private void	beginTextClip()	Begin buffering the text clipping path, if any.
private float	clampColor(float color)
void	clip(int windingRule)	Modify the current clipping path by intersecting it with the current path.
void	closePath()	Closes the current path.
void	curveTo(float x1, float y1, float x2, float y2, float x3, float y3)	Draws a curve from the current point to (x3,y3) using (x1,y1) and (x2,y2) as control points.
private void	drawBufferedImage(PDImage pdImage, java.awt.image.BufferedImage image, java.awt.geom.AffineTransform at)
private void	drawGlyph(java.awt.geom.GeneralPath path, PDFont font, int code, Vector displacement, java.awt.geom.AffineTransform at)	Renders a glyph.
void	drawImage(PDImage pdImage)	Draw the image.
void	drawPage(java.awt.Graphics2D g, PDRectangle pageSize)	Draws the page to the requested context.
(package private) void	drawTilingPattern(java.awt.Graphics2D g, PDTilingPattern pattern, PDColorSpace colorSpace, PDColor color, Matrix patternMatrix)	Draws the pattern stream to the requested context.
void	endMarkedContentSequence()	Called when a marked content group ends
void	endPath()	Ends the current path without filling or stroking it.
void	endText()	Called when the ET operator is encountered.
private void	endTextClip()	End buffering the text clipping path, if any.
void	fillAndStrokePath(int windingRule)	Fills and then strokes the path.
void	fillPath(int windingRule)	Fill the path.
AnnotationFilter	getAnnotationFilter()	Return the AnnotationFilter.
java.awt.geom.Point2D	getCurrentPoint()	Returns the current point of the current path.
private float[]	getDashArray(PDLineDashPattern dashPattern)
protected java.awt.Graphics2D	getGraphics()	Returns the underlying Graphics2D.
private java.awt.image.LookupTable	getInvLookupTable()
protected java.awt.geom.GeneralPath	getLinePath()	Returns the current line path.
protected java.awt.Paint	getNonStrokingPaint()	Returns the non-stroking AWT Paint.
protected java.awt.Paint	getPaint(PDColor color)	Returns an AWT paint for the given PDColor.
PDFRenderer	getRenderer()	Returns the parent renderer.
private java.awt.Stroke	getStroke()
private java.awt.Paint	getStrokingPaint()
protected int	getSubsampling(PDImage pdImage, java.awt.geom.AffineTransform at)	Calculates the subsampling frequency for a given PDImage based on the current transformation and its calculated transform.
private boolean	hasBlendMode(PDTransparencyGroup group, java.util.Set<COSBase> groupsDone)
private boolean	hasTransparency(PDFormXObject form)
private void	intersectShadingBBox(PDColor color, java.awt.geom.Area area)
private boolean	isAllZeroDash(float[] dashArray)
private boolean	isContentRendered()
private boolean	isHiddenAndVisibilityExpression(COSArray veArray)
private boolean	isHiddenNotVisibilityExpression(COSArray veArray)
private boolean	isHiddenOCG(PDPropertyList propertyList)
private boolean	isHiddenOCMD(PDOptionalContentMembershipDictionary ocmd)
private boolean	isHiddenOrVisibilityExpression(COSArray veArray)
private boolean	isHiddenVisibilityExpression(COSArray veArray)
private boolean	isRectangular(java.awt.geom.GeneralPath path)	Returns true if the given path is rectangular.
void	lineTo(float x, float y)	Draws a line from the current point to (x,y).
void	moveTo(float x, float y)	Starts a new path at (x,y).
void	setAnnotationFilter(AnnotationFilter annotationFilter)	Set the AnnotationFilter.
protected void	setClip()	Sets the clipping path using caching for performance.
private void	setRenderingHints()	Sets high-quality rendering hints on the current Graphics2D.
void	shadingFill(COSName shadingName)	Fill with Shading.
private boolean	shouldSkipAnnotation(PDAnnotation annotation)
void	showAnnotation(PDAnnotation annotation)	Shows the given annotation.
protected void	showFontGlyph(Matrix textRenderingMatrix, PDFont font, int code, Vector displacement)	Called when a glyph is to be processed.
void	showForm(PDFormXObject form)	Shows a form from the content stream.
void	showTransparencyGroup(PDTransparencyGroup form)	Shows a transparency group from the content stream.
protected void	showTransparencyGroupOnGraphics(PDTransparencyGroup form, java.awt.Graphics2D graphics)	For advanced users, to extract the transparency group into a separate graphics device.
protected void	showType3Glyph(Matrix textRenderingMatrix, PDType3Font font, int code, Vector displacement)	Called when a glyph is to be processed.
void	strokePath()	Stroke the path.
protected void	transferClip(java.awt.Graphics2D graphics)	Transfer clip to the destination device.

Methods inherited from class org.apache.pdfbox.contentstream.PDFGraphicsStreamEngine

getPage

Methods inherited from class org.apache.pdfbox.contentstream.PDFStreamEngine

addOperator, applyTextAdjustment, decreaseLevel, getAppearance, getCurrentPage, getGraphicsStackSize, getGraphicsState, getInitialMatrix, getLevel, getResources, getTextLineMatrix, getTextMatrix, increaseLevel, isShouldProcessColorOperators, markedContentPoint, operatorException, processAnnotation, processChildStream, processOperator, processOperator, processPage, processSoftMask, processTilingPattern, processTilingPattern, processTransparencyGroup, processType3Stream, restoreGraphicsStack, restoreGraphicsState, saveGraphicsStack, saveGraphicsState, setLineDashPattern, setTextLineMatrix, setTextMatrix, showGlyph, showText, showTextString, showTextStrings, transformedPoint, transformWidth, unsupportedOperator

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

OS_NAME

private static final java.lang.String OS_NAME

IS_WINDOWS

private static final boolean IS_WINDOWS

IS_LINUX

private static final boolean IS_LINUX

renderer

private final PDFRenderer renderer

subsamplingAllowed

private final boolean subsamplingAllowed

graphics

private java.awt.Graphics2D graphics

xform

private java.awt.geom.AffineTransform xform

xformScalingFactorX

private float xformScalingFactorX

xformScalingFactorY

private float xformScalingFactorY

pageSize

private PDRectangle pageSize

flipTG

private boolean flipTG

clipWindingRule

private int clipWindingRule

linePath

private java.awt.geom.GeneralPath linePath

lastClips

private java.util.List<java.awt.geom.Path2D> lastClips

initialClip

private java.awt.Shape initialClip

textClippings

private java.util.List<java.awt.Shape> textClippings

glyphCaches

private final java.util.Map<PDFont,GlyphCache> glyphCaches

tilingPaintFactory

private final TilingPaintFactory tilingPaintFactory

transparencyGroupStack

private final java.util.Deque<PageDrawer.TransparencyGroup> transparencyGroupStack

nestedHiddenOCGCount

private int nestedHiddenOCGCount

destination

private final RenderDestination destination

renderingHints

private final java.awt.RenderingHints renderingHints

imageDownscalingOptimizationThreshold

private final float imageDownscalingOptimizationThreshold

invTable

private java.awt.image.LookupTable invTable

blendModeMap

private final java.util.Map<COSBase,java.lang.Boolean> blendModeMap

annotationFilter

private AnnotationFilter annotationFilter

Default annotations filter, returns all annotations

Constructor Detail

PageDrawer

public PageDrawer(PageDrawerParameters parameters)
           throws java.io.IOException

Constructor.

Parameters:

parameters - Parameters for page drawing.

Throws:

java.io.IOException - If there is an error loading properties from the file.

Method Detail

getAnnotationFilter

public AnnotationFilter getAnnotationFilter()

Return the AnnotationFilter.

Returns:

the AnnotationFilter

setAnnotationFilter

public void setAnnotationFilter(AnnotationFilter annotationFilter)

Set the AnnotationFilter.

Allows to only render annotation accepted by the filter.

Parameters:

annotationFilter - the AnnotationFilter

getRenderer

public final PDFRenderer getRenderer()

Returns the parent renderer.

Returns:

the parent renderer

getGraphics

protected final java.awt.Graphics2D getGraphics()

Returns the underlying Graphics2D. May be null if drawPage has not yet been called.

Returns:

the underlying Graphics2D

getLinePath

protected final java.awt.geom.GeneralPath getLinePath()

Returns the current line path. This is reset to empty after each fill/stroke.

Returns:

the current line path

setRenderingHints

private void setRenderingHints()

Sets high-quality rendering hints on the current Graphics2D.

drawPage

public void drawPage(java.awt.Graphics2D g,
                     PDRectangle pageSize)
              throws java.io.IOException

Draws the page to the requested context.

Parameters:

g - The graphics context to draw onto.

pageSize - The size of the page to draw.

Throws:

java.io.IOException - If there is an IO error while drawing the page.

drawTilingPattern

void drawTilingPattern(java.awt.Graphics2D g,
                       PDTilingPattern pattern,
                       PDColorSpace colorSpace,
                       PDColor color,
                       Matrix patternMatrix)
                throws java.io.IOException

Draws the pattern stream to the requested context.

Parameters:

g - The graphics context to draw onto.

pattern - The tiling pattern to be used.

colorSpace - color space for this tiling.

color - color for this tiling.

patternMatrix - the pattern matrix

Throws:

java.io.IOException - If there is an IO error while drawing the page.

clampColor

private float clampColor(float color)

getPaint

protected java.awt.Paint getPaint(PDColor color)
                           throws java.io.IOException

Returns an AWT paint for the given PDColor.

Parameters:

color - The color to get a paint for. This can be an actual color or a pattern.

Returns:

an AWT paint for the given PDColor

Throws:

java.io.IOException - if the AWT paint could not be created

setClip

protected final void setClip()

Sets the clipping path using caching for performance. We track lastClip manually because Graphics.getClip() returns a new object instead of the same one passed to setClip(). You may need to call this if you override showGlyph(). See PDFBOX-5093 for more.

transferClip

protected void transferClip(java.awt.Graphics2D graphics)

Transfer clip to the destination device. Override this if you want to avoid to do slow intersecting operations but want the destination device to do this (e.g. SVG). You can get the individual clippings via PDGraphicsState.getCurrentClippingPaths(). See PDFBOX-5258 for sample code.

Parameters:

graphics - graphics device

beginText

public void beginText()
               throws java.io.IOException

Description copied from class: PDFStreamEngine

Called when the BT operator is encountered. This method is for overriding in subclasses, the default implementation does nothing.

Overrides:

beginText in class PDFStreamEngine

Throws:

java.io.IOException - if there was an error processing the text

endText

public void endText()
             throws java.io.IOException

Description copied from class: PDFStreamEngine

Called when the ET operator is encountered. This method is for overriding in subclasses, the default implementation does nothing.

Overrides:

endText in class PDFStreamEngine

Throws:

java.io.IOException - if there was an error processing the text

beginTextClip

private void beginTextClip()

Begin buffering the text clipping path, if any.

endTextClip

private void endTextClip()

End buffering the text clipping path, if any.

showFontGlyph

protected void showFontGlyph(Matrix textRenderingMatrix,
                             PDFont font,
                             int code,
                             Vector displacement)
                      throws java.io.IOException

Description copied from class: PDFStreamEngine

Called when a glyph is to be processed. This method is intended for overriding in subclasses, the default implementation does nothing.

Overrides:

showFontGlyph in class PDFStreamEngine

Parameters:

textRenderingMatrix - the current text rendering matrix, T_rm

font - the current font

code - internal PDF character code for the glyph

displacement - the displacement (i.e. advance) of the glyph in text space

Throws:

java.io.IOException - if the glyph cannot be processed

drawGlyph

private void drawGlyph(java.awt.geom.GeneralPath path,
                       PDFont font,
                       int code,
                       Vector displacement,
                       java.awt.geom.AffineTransform at)
                throws java.io.IOException

Renders a glyph.

Parameters:

path - the GeneralPath for the glyph

font - the font

code - character code

displacement - the glyph's displacement (advance)

at - the transformation

Throws:

java.io.IOException - if something went wrong

showType3Glyph

protected void showType3Glyph(Matrix textRenderingMatrix,
                              PDType3Font font,
                              int code,
                              Vector displacement)
                       throws java.io.IOException

Description copied from class: PDFStreamEngine

Called when a glyph is to be processed. This method is intended for overriding in subclasses, the default implementation does nothing.

Overrides:

showType3Glyph in class PDFStreamEngine

Parameters:

textRenderingMatrix - the current text rendering matrix, T_rm

font - the current font

code - internal PDF character code for the glyph

displacement - the displacement (i.e. advance) of the glyph in text space

Throws:

java.io.IOException - if the glyph cannot be processed

appendRectangle

public void appendRectangle(java.awt.geom.Point2D p0,
                            java.awt.geom.Point2D p1,
                            java.awt.geom.Point2D p2,
                            java.awt.geom.Point2D p3)

Description copied from class: PDFGraphicsStreamEngine

Append a rectangle to the current path.

Specified by:

appendRectangle in class PDFGraphicsStreamEngine

Parameters:

p0 - starting coordinate of the rectangle

p1 - second coordinate of the rectangle

p2 - third coordinate of the rectangle

p3 - last coordinate of the rectangle

applySoftMaskToPaint

private java.awt.Paint applySoftMaskToPaint(java.awt.Paint parentPaint,
                                            PDSoftMask softMask)
                                     throws java.io.IOException

Throws:

java.io.IOException

adjustImage

private java.awt.image.BufferedImage adjustImage(java.awt.image.BufferedImage gray)

getStrokingPaint

private java.awt.Paint getStrokingPaint()
                                 throws java.io.IOException

Throws:

java.io.IOException

getNonStrokingPaint

protected final java.awt.Paint getNonStrokingPaint()
                                            throws java.io.IOException

Returns the non-stroking AWT Paint. You may need to call this if you override showGlyph(). See PDFBOX-5093 for more.

Returns:

The non-stroking AWT Paint.

Throws:

java.io.IOException - if the non-stroking AWT Paint could not be created

getStroke

private java.awt.Stroke getStroke()

isAllZeroDash

private boolean isAllZeroDash(float[] dashArray)

getDashArray

private float[] getDashArray(PDLineDashPattern dashPattern)

strokePath

public void strokePath()
                throws java.io.IOException

Description copied from class: PDFGraphicsStreamEngine

Stroke the path.

Specified by:

strokePath in class PDFGraphicsStreamEngine

Throws:

java.io.IOException - If there is an IO error while stroking the path.

fillPath

public void fillPath(int windingRule)
              throws java.io.IOException

Description copied from class: PDFGraphicsStreamEngine

Fill the path.

Specified by:

fillPath in class PDFGraphicsStreamEngine

Parameters:

windingRule - The winding rule this path will use.

Throws:

java.io.IOException - if the path could not be filled

intersectShadingBBox

private void intersectShadingBBox(PDColor color,
                                  java.awt.geom.Area area)
                           throws java.io.IOException

Throws:

java.io.IOException

isRectangular

private boolean isRectangular(java.awt.geom.GeneralPath path)

Returns true if the given path is rectangular.

fillAndStrokePath

public void fillAndStrokePath(int windingRule)
                       throws java.io.IOException

Fills and then strokes the path.

Specified by:

fillAndStrokePath in class PDFGraphicsStreamEngine

Parameters:

windingRule - The winding rule this path will use.

Throws:

java.io.IOException - If there is an IO error while filling the path.

clip

public void clip(int windingRule)

Description copied from class: PDFGraphicsStreamEngine

Modify the current clipping path by intersecting it with the current path. The clipping path will not be updated until the succeeding painting operator is called.

Specified by:

clip in class PDFGraphicsStreamEngine

Parameters:

windingRule - The winding rule which will be used for clipping.

moveTo

public void moveTo(float x,
                   float y)

Description copied from class: PDFGraphicsStreamEngine

Starts a new path at (x,y).

Specified by:

moveTo in class PDFGraphicsStreamEngine

Parameters:

x - the x-coordinate to move to

y - the y-coordinate to move to

lineTo

public void lineTo(float x,
                   float y)

Description copied from class: PDFGraphicsStreamEngine

Draws a line from the current point to (x,y).

Specified by:

lineTo in class PDFGraphicsStreamEngine

Parameters:

x - the X-coordinate of the ending-point of the line to be drawn

y - the Y-coordinate of the ending-point of the line to be drawn

curveTo

public void curveTo(float x1,
                    float y1,
                    float x2,
                    float y2,
                    float x3,
                    float y3)

Description copied from class: PDFGraphicsStreamEngine

Draws a curve from the current point to (x3,y3) using (x1,y1) and (x2,y2) as control points.

Specified by:

curveTo in class PDFGraphicsStreamEngine

Parameters:

x1 - the X coordinate of the first Bézier control point

y1 - the Y coordinate of the first Bézier control point

x2 - the X coordinate of the second Bézier control point

y2 - the Y coordinate of the second Bézier control point

x3 - the X coordinate of the final end point

y3 - the Y coordinate of the final end point

getCurrentPoint

public java.awt.geom.Point2D getCurrentPoint()

Description copied from class: PDFGraphicsStreamEngine

Returns the current point of the current path.

Specified by:

getCurrentPoint in class PDFGraphicsStreamEngine

Returns:

the current point or null

closePath

public void closePath()

Description copied from class: PDFGraphicsStreamEngine

Closes the current path.

Specified by:

closePath in class PDFGraphicsStreamEngine

endPath

public void endPath()

Description copied from class: PDFGraphicsStreamEngine

Ends the current path without filling or stroking it. The clipping path is updated here.

Specified by:

endPath in class PDFGraphicsStreamEngine

adjustClip

private java.awt.geom.GeneralPath adjustClip(java.awt.geom.GeneralPath linePath)

PDFBOX-5715 / PR#73: This was added to fix a problem with missing fine lines when printing on MacOS. Lines vanish because CPrinterJob sets graphics scale to 1 for Printable so after scaling lines often have a width smaller than 1 after scaling and clipping. This change enlarges the clip bounds to cover at least 1 point plus 0.5 on one and another side in the device space to allow to draw the linePath inside the clip. The linePath can consists from different lines but when its bounds width or height is less than 1.0 it seems safe to use a rectangle as a clip instead of the real path. A more detailed explanation can be read here.

Parameters:

linePath -

Returns:

drawImage

public void drawImage(PDImage pdImage)
               throws java.io.IOException

Description copied from class: PDFGraphicsStreamEngine

Draw the image.

Specified by:

drawImage in class PDFGraphicsStreamEngine

Parameters:

pdImage - The image to draw.

Throws:

java.io.IOException - if the image could not be drawn

getSubsampling

protected int getSubsampling(PDImage pdImage,
                             java.awt.geom.AffineTransform at)

Calculates the subsampling frequency for a given PDImage based on the current transformation and its calculated transform. Extend this method if you want to use your own strategy.

Parameters:

pdImage - PDImage to be drawn

at - Transform that will be applied to the image when drawing

Returns:

The rounded-down ratio of image pixels to drawn pixels. Returned value will always be >=1.

drawBufferedImage

private void drawBufferedImage(PDImage pdImage,
                               java.awt.image.BufferedImage image,
                               java.awt.geom.AffineTransform at)
                        throws java.io.IOException

Throws:

java.io.IOException

applyTransferFunction

private java.awt.image.BufferedImage applyTransferFunction(java.awt.image.BufferedImage image,
                                                           COSBase transfer)
                                                    throws java.io.IOException

Throws:

java.io.IOException

shadingFill

public void shadingFill(COSName shadingName)
                 throws java.io.IOException

Description copied from class: PDFGraphicsStreamEngine

Fill with Shading.

Specified by:

shadingFill in class PDFGraphicsStreamEngine

Parameters:

shadingName - The name of the Shading Dictionary to use for this fill instruction.

Throws:

java.io.IOException - if the path could not be filled using the given shading

showAnnotation

public void showAnnotation(PDAnnotation annotation)
                    throws java.io.IOException

Description copied from class: PDFStreamEngine

Shows the given annotation.

Overrides:

showAnnotation in class PDFStreamEngine

Parameters:

annotation - An annotation on the current page.

Throws:

java.io.IOException - If an error occurred reading the annotation

shouldSkipAnnotation

private boolean shouldSkipAnnotation(PDAnnotation annotation)

hasTransparency

private boolean hasTransparency(PDFormXObject form)
                         throws java.io.IOException

Throws:

java.io.IOException

showForm

public void showForm(PDFormXObject form)
              throws java.io.IOException

Shows a form from the content stream.

Overrides:

showForm in class PDFStreamEngine

Parameters:

form - form XObject

Throws:

java.io.IOException - if the form cannot be processed

showTransparencyGroup

public void showTransparencyGroup(PDTransparencyGroup form)
                           throws java.io.IOException

Description copied from class: PDFStreamEngine

Shows a transparency group from the content stream.

Overrides:

showTransparencyGroup in class PDFStreamEngine

Parameters:

form - transparency group (form) XObject

Throws:

java.io.IOException - if the transparency group cannot be processed

showTransparencyGroupOnGraphics

protected void showTransparencyGroupOnGraphics(PDTransparencyGroup form,
                                               java.awt.Graphics2D graphics)
                                        throws java.io.IOException

For advanced users, to extract the transparency group into a separate graphics device.

Parameters:

form - the transparency group to be extracted

graphics - the target graphics device

Throws:

java.io.IOException - if the transparency group could not be extracted

hasBlendMode

private boolean hasBlendMode(PDTransparencyGroup group,
                             java.util.Set<COSBase> groupsDone)

beginMarkedContentSequence

public void beginMarkedContentSequence(COSName tag,
                                       COSDictionary properties)

Called when a marked content group begins

Overrides:

beginMarkedContentSequence in class PDFStreamEngine

Parameters:

tag - indicates the role or significance of the sequence

properties - optional properties

endMarkedContentSequence

public void endMarkedContentSequence()

Called when a marked content group ends

Overrides:

endMarkedContentSequence in class PDFStreamEngine

isContentRendered

private boolean isContentRendered()

isHiddenOCG

private boolean isHiddenOCG(PDPropertyList propertyList)

isHiddenOCMD

private boolean isHiddenOCMD(PDOptionalContentMembershipDictionary ocmd)

isHiddenVisibilityExpression

private boolean isHiddenVisibilityExpression(COSArray veArray)

isHiddenAndVisibilityExpression

private boolean isHiddenAndVisibilityExpression(COSArray veArray)

isHiddenOrVisibilityExpression

private boolean isHiddenOrVisibilityExpression(COSArray veArray)

isHiddenNotVisibilityExpression

private boolean isHiddenNotVisibilityExpression(COSArray veArray)

getInvLookupTable

private java.awt.image.LookupTable getInvLookupTable()