Package com.adobe.fontengine.inlineformatting

Class PDF16RichTextFormatter

java.lang.Object

com.adobe.fontengine.inlineformatting.PDF16RichTextFormatter

public final class PDF16RichTextFormatter
extends java.lang.Object

Inline formatter for PDF 1.6 rich text form fields.

The client must first pass a run corresponding to a whole paragraph to the preFormat(com.adobe.fontengine.inlineformatting.AttributedRun, int, int) method. It can then pass fragments of the run to the format(AttributedRun, int, int) or format(AttributedRun, int, int, boolean) method.

Method Summary

Modifier and Type	Method	Description
int	format(AttributedRun run, int start, int limit)	Format an AttributedRun by resolving the styling constraints to actual fonts, glyphs and positions for those glyphs.
int	format(AttributedRun run, int start, int limit, boolean shouldKern)	Format an AttributedRun by resolving the styling constraints to actual fonts, glyphs and positions for those glyphs.
static CSS20FontSet	getFontSetInstance()	Create a CSS20FontSet for use with a PDF16RichTextFormatter.
static CSS20FontSet	getFontSetInstance(CSS20FontSet original)	Create a copy of a CSS20FontSet for use with a PDF16RichTextFormatter.
static CSS20FontSet	getFontSetInstance(FamilyNameNormalizer normalizer)	Create a CSS20FontSet for use with a PDF16RichTextFormatter.
static PDF16RichTextFormatter	getFormatterInstance(CSS20FontSet fontSet)	Create a PDF16RichTextFormatter for formatting text.
int	preFormat(AttributedRun run, int start, int limit)	Preformat an AttributedRun.

Methods inherited from class java.lang.Object

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

Method Detail

getFormatterInstance

public static PDF16RichTextFormatter getFormatterInstance(CSS20FontSet fontSet)

Create a PDF16RichTextFormatter for formatting text.

Concurrency

The PDF16RichTextFormatter instance that is returned from this method is not in general thread safe.

Parameters:

fontSet - A CSS20FontSet that has had all fonts and fallbacks fonts that are relevant to the caller added.

Returns:

A PDF16RichTextFormatter to be used for formatting text

getFontSetInstance

public static CSS20FontSet getFontSetInstance()

Create a CSS20FontSet for use with a PDF16RichTextFormatter. The returned CSS20FontSet is intended to be shared among thread and documents. Optimal performance will be achieved by sharing them in this way.

Concurrency

The instance implementing the CSS20FontSet interface that is returned from this method offers some tighter thread safety guarantees than that guaranteed by the CSS20FontSet interface. It is safe to use the CSS20FontSet object for font resolution from multiple threads at one time as long as the methods which change the state of the CSS20FontSet object are not called at any time that the PDF16RichTextFormatter objects to which it has been given may be using it for font resolution. There is no mechanism within CSSPPDF16Formatter or CSS20FontSet to guarantee that this doesn't occur. A client program can guarantee this by modifying the CSS20FontSet object fully before giving it to one or more PDF16RichTextFormatter objects in one or more threads. A client program could also use some synchronization constructs of its own to guarantee this. This means that the addFont(), setFallbackFonts(), setGenericFont(), and setResolutionPriority() methods can not be called while there is any chance that the CSS20FontSet object may be being used for font resolution. It is also safe to copy this CSS20FontSet object except when it is possible that it may be being modified. It is again the responsibility of the client to ensure that this doesn't happen.

Returns:

An empty CSS20FontSet that can be used with a PDF16RichTextFormatter

getFontSetInstance

public static CSS20FontSet getFontSetInstance(FamilyNameNormalizer normalizer)

Create a CSS20FontSet for use with a PDF16RichTextFormatter. This method allows a client to specify a FamilyNameNormalizer object that is used to modify the font family name of every Font object added to the CSS20FontSet. It is also used to modify the font names inside of any search request.

Concurrency

The instance implementing the CSS20FontSet interface that is returned from this method offers some tighter thread safety guarantees than that guaranteed by the CSS20FontSet interface. It is safe to use the CSS20FontSet object for font resolution from multiple threads at one time as long as the methods which change the state of the CSS20FontSet object are not called at any time that the PDF16RichTextFormatter objects to which it has been given may be using it for font resolution. There is no mechanism within CSSPPDF16Formatter or CSS20FontSet to guarantee that this doesn't occur. A client program can guarantee this by modifying the CSS20FontSet object fully before giving it to one or more PDF16RichTextFormatter objects in one or more threads. A client program could also use some synchronization constructs of its own to guarantee this. This means that the addFont(), setFallbackFonts(), setGenericFont(), and setResolutionPriority() methods can not be called while there is any chance that the CSS20FontSet object may be being used for font resolution. It is also safe to copy this CSS20FontSet object except when it is possible that it may be being modified. It is again the responsibility of the client to ensure that this doesn't happen.

Parameters:

normalizer - A FamilyNameNormalizer used for adjusting font family names.

Returns:

An empty CSS20FontSet that can be used with a PDF16RichTextFormatter

getFontSetInstance

public static CSS20FontSet getFontSetInstance(CSS20FontSet original)

Create a copy of a CSS20FontSet for use with a PDF16RichTextFormatter.

Concurrency

The instance implementing the CSS20FontSet interface that is returned from this method offers some tighter thread safety guarantees than that guaranteed by the CSS20FontSet interface. It is safe to use the CSS20FontSet object for font resolution from multiple threads at one time as long as the methods which change the state of the CSS20FontSet object are not called at any time that the PDF16RichTextFormatter objects to which it has been given may be using it for font resolution. There is no mechanism within CSSPPDF16Formatter or CSS20FontSet to guarantee that this doesn't occur. A client program can guarantee this by modifying the CSS20FontSet object fully before giving it to one or more PDF16RichTextFormatter objects in one or more threads. A client program could also use some synchronization constructs of its own to guarantee this. This means that the addFont(), setFallbackFonts(), setGenericFont(), and setResolutionPriority() methods can not be called while there is any chance that the CSS20FontSet object may be being used for font resolution. It is also safe to copy this CSS20FontSet object except when it is possible that it may be being modified. It is again the responsibility of the client to ensure that this doesn't happen.

Parameters:

original - the CSS20FontSet to copy

Returns:

A copy of a CSS20FontSet that can be used with a PDF16RichTextFormatter

preFormat

public int preFormat(AttributedRun run,
                     int start,
                     int limit)
              throws FontException,
                     FormattingException

Preformat an AttributedRun. This method should be called on a portion of an AttributedRun corresponding to a whole paragraph, before the format(AttributedRun, int, int) or format(AttributedRun, int, int, boolean) method.

Parameters:

run - an AttributedRun that contains the text to be formatted

start - the index in the AttributedRun to start formatting from

limit - the index in the AttributedRun at which formatting should cease (one more than the last position that formatting should done to)

Returns:

The new limit of the original range in the AttributedRun after the formatting operation.

Throws:

FontException

FormattingException

format

public int format(AttributedRun run,
                  int start,
                  int limit)
           throws FontException,
                  FormattingException

Format an AttributedRun by resolving the styling constraints to actual fonts, glyphs and positions for those glyphs. This method should be called after the preFormat(com.adobe.fontengine.inlineformatting.AttributedRun, int, int) method.

On input:

• each element in the run can be either a character or a glyph, and this is recorded by the ElementAttribute.isGlyph attribute.
• each element must have ElementAttribute.locale set
• each element must have ElementAttribute.bidiLevel set
• each glyph element must have ElementAttribute.joiningType set
• each element must have ElementAttribute.CSS20Attribute set
• each character element can have ElementAttribute.digitCase set; if not set, equivalent to DigitCase.DEFAULT
• each character element can have ElementAttribute.digitWidth set; if not set, equivalent to DigitWidth.DEFAULT
• each interelement can have InterElementAttribute.ligatureLevel set; if not set, equivalent to LigatureLevel.COMMON

At some point during formatting, startWorkingWithPositions will be called on the run.

On output:

• each element in the run will be a glyph
• each element will have a placement and advance vector
• each element will have ElementAttribute.font set to the actual font to use
• each element will have ElementAttribute.pointSize set to the actual point size to use

Parameters:

run - an AttributedRun that contains the text to be formatted

start - the index in the AttributedRun to start formatting from

limit - the index in the AttributedRun at which formatting should cease (one more than the last position that formatting should done to)

Returns:

The new limit of the original range in the AttributedRun after the formatting operation.

Throws:

UnsupportedFontException

InvalidFontException

FormattingException

FontLoadingException

FontException

format

public int format(AttributedRun run,
                  int start,
                  int limit,
                  boolean shouldKern)
           throws FontException,
                  FormattingException

Format an AttributedRun by resolving the styling constraints to actual fonts, glyphs and positions for those glyphs. This method should be called after the preFormat(com.adobe.fontengine.inlineformatting.AttributedRun, int, int) method.

On input:

• each element in the run can be either a character or a glyph, and this is recorded by the ElementAttribute.isGlyph attribute.
• each element must have ElementAttribute.locale set
• each element must have ElementAttribute.bidiLevel set
• each glyph element must have ElementAttribute.joiningType set
• each element must have ElementAttribute.CSS20Attribute set
• each character element can have ElementAttribute.digitCase set; if not set, equivalent to DigitCase.DEFAULT
• each character element can have ElementAttribute.digitWidth set; if not set, equivalent to DigitWidth.DEFAULT
• each interelement can have InterElementAttribute.ligatureLevel set; if not set, equivalent to LigatureLevel.COMMON

At some point during formatting, startWorkingWithPositions will be called on the run.

On output:

• each element in the run will be a glyph
• each element will have a placement and advance vector
• each element will have ElementAttribute.font set to the actual font to use
• each element will have ElementAttribute.pointSize set to the actual point size to use

Parameters:

run - an AttributedRun that contains the text to be formatted

start - the index in the AttributedRun to start formatting from

limit - the index in the AttributedRun at which formatting should cease (one more than the last position that formatting should done to)

shouldKern - whether or not to apply kerning to the glyphs

Returns:

The new limit of the original range in the AttributedRun after the formatting operation.

Throws:

UnsupportedFontException

InvalidFontException

FormattingException

FontLoadingException

FontException