Package com.adobe.fontengine.font

Class FontData

java.lang.Object

com.adobe.fontengine.font.FontData

Direct Known Subclasses:

CFFFont, OpenTypeFont, PDFSimpleFont, Type1Font, WrapperFontData

public abstract class FontData
extends Object

The base class for all FontData objects. This class provides the basic functionality common to all Fonts.

Synchronization

These objects are immutable.

Constructor Summary

Constructors

Constructor	Description
FontData(byte[] digest)

Method Summary

Modifier and Type	Method	Description
abstract Subset	createSubset()	Create a subset for this font.
abstract CacheSupportInfo	getCacheSupportInfo()	Return the CacheSupportInfo that this font matches
byte[]	getContainerFingerprint()
double	getCoolTypeCapHeight()	Returns the CoolTypeCapHeight of this font.
Rect	getCoolTypeFontBBox()
Rect	getCoolTypeGlyphBBox(int glyphID)
int	getCoolTypeGlyphForChar(int unicodeScalarValue)	Return the glyph used by CoolType for a character.
abstract Rect	getCoolTypeIcfBox()
abstract Rect	getCoolTypeIdeoEmBox()
abstract LineMetrics	getCoolTypeLineMetrics()	Emulates the CoolType API CTFontDict:GetHorizontalMetrics CoolType API.
abstract boolean	getCoolTypeProportionalRomanFromFontProperties()
abstract CoolTypeScript	getCoolTypeScript()
abstract UnderlineMetrics	getCoolTypeUnderlineMetrics()
double	getCoolTypeUnitsPerEm()
double	getCoolTypeXHeight()
CSS20FontDescription[]	getCSS20FontDescription()
abstract Permission	getEmbeddingPermission(boolean wasEmbedded)
abstract Rect	getFontBBox()
abstract FXGFontDescription[]	getFXGFontDescription(Platform platform, ULocale locale)	Return the FXG descriptions for this font.
abstract Rect	getGlyphBBox(int gid)	Get the bounding box of a glyph.
abstract int	getGlyphForChar(int unicodeScalarValue)	Return the glyph to use to display a character.
abstract void	getGlyphOutline(int gid, OutlineConsumer consumer)	Send a glyph's outline to an OutlineConsumer.
abstract double	getHorizontalAdvance(int gid)	Get the horizontal advance of a glyph.
LineMetrics	getLineMetrics()	Return the line metrics for this font.
abstract int	getNumGlyphs()	Return the number of glyphs in this font.
abstract PDFFontDescription	getPDFFontDescription(Font font)
abstract PlatformFontDescription[]	getPlatformFontDescription(Platform platform, ULocale locale)	Return the platform descriptions for this font.
double[]	getPointSizeRange()	Return the range of point sizes for which this font has been designed.
abstract PostscriptFontDescription[]	getPostscriptFontDescription()	Return the postscript descriptions that this font matches.
CSS20FontDescription	getPreferredCSS20FontDescription()
Scaler	getScaler()	Get a scaler for this font.
abstract Scaler	getScaler(ScanConverter c)	Get a scaler for this font, using a specific scan converter.
abstract CatalogDescription	getSelectionDescription()
abstract SWFFont4Description	getSWFFont4Description(boolean wasEmbedded)
abstract SWFFontDescription	getSWFFontDescription(boolean wasEmbedded)
abstract double	getUnitsPerEmX()
abstract double	getUnitsPerEmY()
abstract XDCFontDescription	getXDCFontDescription(Font font)
boolean	hasCoolTypeProportionalRoman()	Determines whether a font has proportional roman, as defined by CoolType.
boolean	isSymbolic()	Tell whether this font is symbolic.
abstract void	subsetAndStream(Subset subset, OutputStream out, boolean preserveROS)	Subset and stream this font for PDF use.

Methods inherited from class java.lang.Object

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

Constructor Detail

FontData

public FontData(byte[] digest)

Method Detail

getContainerFingerprint

public byte[] getContainerFingerprint()

getNumGlyphs

public abstract int getNumGlyphs()
                          throws InvalidFontException,
                                 UnsupportedFontException

Return the number of glyphs in this font.

Throws:

InvalidFontException

UnsupportedFontException

isSymbolic

public boolean isSymbolic()
                   throws UnsupportedFontException,
                          InvalidFontException

Tell whether this font is symbolic.

Throws:

UnsupportedFontException

InvalidFontException

getUnitsPerEmX

public abstract double getUnitsPerEmX()
                               throws UnsupportedFontException,
                                      InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getUnitsPerEmY

public abstract double getUnitsPerEmY()
                               throws UnsupportedFontException,
                                      InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeUnitsPerEm

public double getCoolTypeUnitsPerEm()
                             throws UnsupportedFontException,
                                    InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getFontBBox

public abstract Rect getFontBBox()
                          throws InvalidFontException,
                                 UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException

getCoolTypeFontBBox

public Rect getCoolTypeFontBBox()
                         throws InvalidFontException,
                                UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException

getCoolTypeScript

public abstract CoolTypeScript getCoolTypeScript()
                                          throws UnsupportedFontException,
                                                 InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeCapHeight

public double getCoolTypeCapHeight()
                            throws UnsupportedFontException,
                                   InvalidFontException

Returns the CoolTypeCapHeight of this font.

Returns:

Double.NaN if the value cannot be determined

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeXHeight

public double getCoolTypeXHeight()
                          throws UnsupportedFontException,
                                 InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeIdeoEmBox

public abstract Rect getCoolTypeIdeoEmBox()
                                   throws UnsupportedFontException,
                                          InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeIcfBox

public abstract Rect getCoolTypeIcfBox()
                                throws UnsupportedFontException,
                                       InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeGlyphBBox

public Rect getCoolTypeGlyphBBox(int glyphID)
                          throws UnsupportedFontException,
                                 InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeLineMetrics

public abstract LineMetrics getCoolTypeLineMetrics()
                                            throws UnsupportedFontException,
                                                   InvalidFontException

Emulates the CoolType API CTFontDict:GetHorizontalMetrics CoolType API.

See also the getLineMetrics() method.

Throws:

UnsupportedFontException

InvalidFontException

getLineMetrics

public LineMetrics getLineMetrics()
                           throws UnsupportedFontException,
                                  InvalidFontException

Return the line metrics for this font.

Some font formats do not support the notion of line metrics, and in those cases, this method returns null.

See also the getCoolTypeLineMetrics() method.

Throws:

UnsupportedFontException

InvalidFontException

getCoolTypeUnderlineMetrics

public abstract UnderlineMetrics getCoolTypeUnderlineMetrics()
                                                      throws UnsupportedFontException,
                                                             InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

hasCoolTypeProportionalRoman

public boolean hasCoolTypeProportionalRoman()
                                     throws InvalidFontException,
                                            UnsupportedFontException

Determines whether a font has proportional roman, as defined by CoolType.

Returns:

whether the font is proportional

Throws:

InvalidFontException

UnsupportedFontException

getCoolTypeProportionalRomanFromFontProperties

public abstract boolean getCoolTypeProportionalRomanFromFontProperties()
                                                                throws InvalidFontException

Throws:

InvalidFontException

getGlyphForChar

public abstract int getGlyphForChar(int unicodeScalarValue)
                             throws InvalidFontException,
                                    UnsupportedFontException

Return the glyph to use to display a character. Depending on the layout technology of the font, the returned gid may be further processed.

Parameters:

unicodeScalarValue - the Unicode scalar value of the character; (by definition, surrogate code points are not Unicode scalar values).

Returns:

the gid of the glyph to use

Throws:

InvalidFontException

UnsupportedFontException

getCoolTypeGlyphForChar

public int getCoolTypeGlyphForChar(int unicodeScalarValue)
                            throws InvalidFontException,
                                   UnsupportedFontException

Return the glyph used by CoolType for a character. This is slightly different from getGlyphForChar, and intend to be closer to the behavior of CoolType. The main use of this version is for other functions that emulate CoolType, such as the methods that compute metrics based on the charateristics of some glyphs. In most font types, this is the same as getGlyphForChar, so we provide a default implementation here.

Throws:

InvalidFontException

UnsupportedFontException

getHorizontalAdvance

public abstract double getHorizontalAdvance(int gid)
                                     throws InvalidGlyphException,
                                            UnsupportedFontException,
                                            InvalidFontException

Get the horizontal advance of a glyph. The returned value is in metric space.

Throws:

InvalidGlyphException

UnsupportedFontException

InvalidFontException

getGlyphOutline

public abstract void getGlyphOutline(int gid,
                                     OutlineConsumer consumer)
                              throws InvalidFontException,
                                     UnsupportedFontException

Send a glyph's outline to an OutlineConsumer.

Throws:

InvalidFontException

UnsupportedFontException

getGlyphBBox

public abstract Rect getGlyphBBox(int gid)
                           throws UnsupportedFontException,
                                  InvalidFontException

Get the bounding box of a glyph. The returned value is in metric space.

Throws:

UnsupportedFontException

InvalidFontException

getScaler

public Scaler getScaler()
                 throws InvalidFontException,
                        UnsupportedFontException

Get a scaler for this font. This scaler uses to the most appropriate scan converter for the font.

Throws:

InvalidFontException

UnsupportedFontException

getScaler

public abstract Scaler getScaler(ScanConverter c)
                          throws InvalidFontException,
                                 UnsupportedFontException

Get a scaler for this font, using a specific scan converter.

Throws:

InvalidFontException

UnsupportedFontException

getSWFFontDescription

public abstract SWFFontDescription getSWFFontDescription(boolean wasEmbedded)
                                                  throws UnsupportedFontException,
                                                         InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getSWFFont4Description

public abstract SWFFont4Description getSWFFont4Description(boolean wasEmbedded)
                                                    throws UnsupportedFontException,
                                                           InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getEmbeddingPermission

public abstract Permission getEmbeddingPermission(boolean wasEmbedded)
                                           throws InvalidFontException,
                                                  UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException

getPDFFontDescription

public abstract PDFFontDescription getPDFFontDescription(Font font)
                                                  throws UnsupportedFontException,
                                                         InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

getXDCFontDescription

public abstract XDCFontDescription getXDCFontDescription(Font font)
                                                  throws UnsupportedFontException,
                                                         InvalidFontException

Throws:

UnsupportedFontException

InvalidFontException

createSubset

public abstract Subset createSubset()
                             throws InvalidFontException,
                                    UnsupportedFontException

Create a subset for this font.

Throws:

InvalidFontException

UnsupportedFontException

subsetAndStream

public abstract void subsetAndStream(Subset subset,
                                     OutputStream out,
                                     boolean preserveROS)
                              throws InvalidFontException,
                                     UnsupportedFontException,
                                     IOException

Subset and stream this font for PDF use. The stream is either a TrueType stream or a CID-keyed CFF stream.

Parameters:

out - the OutputStream to which the bytes are streamed

preserveROS - tells whether to preserve the cid -> gid mapping

Throws:

InvalidFontException

UnsupportedFontException

IOException

getCacheSupportInfo

public abstract CacheSupportInfo getCacheSupportInfo()
                                              throws UnsupportedFontException,
                                                     InvalidFontException

Return the CacheSupportInfo that this font matches

Throws:

UnsupportedFontException

InvalidFontException

getPostscriptFontDescription

public abstract PostscriptFontDescription[] getPostscriptFontDescription()
                                                                  throws InvalidFontException,
                                                                         UnsupportedFontException

Return the postscript descriptions that this font matches.

Throws:

InvalidFontException

UnsupportedFontException

getFXGFontDescription

public abstract FXGFontDescription[] getFXGFontDescription(Platform platform,
                                                           ULocale locale)
                                                    throws InvalidFontException,
                                                           UnsupportedFontException

Return the FXG descriptions for this font.

Throws:

InvalidFontException

UnsupportedFontException

getPlatformFontDescription

public abstract PlatformFontDescription[] getPlatformFontDescription(Platform platform,
                                                                     ULocale locale)
                                                              throws InvalidFontException,
                                                                     UnsupportedFontException

Return the platform descriptions for this font.

Throws:

InvalidFontException

UnsupportedFontException

getPointSizeRange

public double[] getPointSizeRange()
                           throws InvalidFontException,
                                  UnsupportedFontException

Return the range of point sizes for which this font has been designed.

Returns:

an array with exactly two elements. The first is the smallest intended point size (inclusive), the second is the largest intended point size (exclusive). Both numbers are in decipoints.

Throws:

InvalidFontException

UnsupportedFontException

getCSS20FontDescription

public CSS20FontDescription[] getCSS20FontDescription()
                                               throws InvalidFontException,
                                                      UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException

getPreferredCSS20FontDescription

public CSS20FontDescription getPreferredCSS20FontDescription()
                                                      throws InvalidFontException,
                                                             UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException

getSelectionDescription

public abstract CatalogDescription getSelectionDescription()
                                                    throws InvalidFontException,
                                                           UnsupportedFontException

Throws:

InvalidFontException

UnsupportedFontException