org.verapdf.pd.font.cff

Class CFFFontProgram

java.lang.Object

org.verapdf.pd.font.cff.CFFFontProgram

All Implemented Interfaces:

FontProgram

public class CFFFontProgram
extends Object
implements FontProgram

This class starts parsing for all inner CFF fonts and contains fonts parsed.

Author:

Sergey Shemyakov

Field Summary

Fields

Modifier and Type	Field and Description
protected CFFIndex	definedNames
protected SeekableInputStream	source

Constructor Summary

Constructors

Constructor and Description
CFFFontProgram(ASInputStream stream, Encoding pdEncoding, CMap cMap, boolean isSubset) Constructor from stream.

Method Summary

Modifier and Type	Method and Description
boolean	containsCode(int code) Checks if font contains character with given ID.
FontProgram	getFont()
ASFileStreamCloser	getFontProgramResource()
protected String	getStringBySID(int sid)
float	getWidth(int code) Returns width of glyph for given character code.
float	getWidth(String glyphName) Returns width of glyph for given glyph name.
boolean	isAttemptedParsing()
boolean	isCIDFont()
boolean	isSuccessfulParsing()
void	parseFont() This method does parsing of font, after it all the data needed should be extracted.
protected int	readCard16()
protected int	readCard8()
protected void	readHeader()
protected CFFIndex	readIndex()
protected CFFNumber	readNumber()

Methods inherited from class java.lang.Object

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

Field Detail

source

protected SeekableInputStream source

definedNames

protected CFFIndex definedNames

Constructor Detail

CFFFontProgram

public CFFFontProgram(ASInputStream stream,
                      Encoding pdEncoding,
                      CMap cMap,
                      boolean isSubset)
               throws IOException

Constructor from stream.

Parameters:

stream - is stream with CFF program.

pdEncoding - is encoding object specified in font dictionary.

Throws:

IOException - if creation of @{link SeekableStream} fails.

Method Detail

parseFont

public void parseFont()
               throws IOException

This method does parsing of font, after it all the data needed should be extracted.

Specified by:

parseFont in interface FontProgram

Throws:

IOException - if error in font parsing occurs.

getWidth

public float getWidth(int code)

Returns width of glyph for given character code.

Specified by:

getWidth in interface FontProgram

Parameters:

code - is code for glyph.

Returns:

width of corresponding glyph or -1 if glyph is not found.

getWidth

public float getWidth(String glyphName)

Returns width of glyph for given glyph name.

Specified by:

getWidth in interface FontProgram

Parameters:

glyphName - is name for glyph.

Returns:

width of corresponding glyph or -1 if glyph is not found.

isCIDFont

public boolean isCIDFont()

Returns:

true if this font is CFF CID font.

containsCode

public boolean containsCode(int code)

Checks if font contains character with given ID.

Specified by:

containsCode in interface FontProgram

Parameters:

code - is character code.

Returns:

true if font contains character with given ID.

isAttemptedParsing

public boolean isAttemptedParsing()

Specified by:

isAttemptedParsing in interface FontProgram

Returns:

true if font parsing has been attempted.

isSuccessfulParsing

public boolean isSuccessfulParsing()

Specified by:

isSuccessfulParsing in interface FontProgram

Returns:

true if font was successfully parsed.

getFont

public FontProgram getFont()

Returns:

CID font or Type1 font that is presented by CFF program.

getFontProgramResource

public ASFileStreamCloser getFontProgramResource()

Specified by:

getFontProgramResource in interface FontProgram

Returns:

file stream closer that handles the closing of font program stream or null if stream is memory stream.

readCard8

protected int readCard8()
                 throws IOException

Throws:

IOException

readCard16

protected int readCard16()
                  throws IOException

Throws:

IOException

readIndex

protected CFFIndex readIndex()
                      throws IOException

Throws:

IOException

readHeader

protected void readHeader()
                   throws IOException

Throws:

IOException

readNumber

protected CFFNumber readNumber()
                        throws IOException

Throws:

IOException

getStringBySID

protected String getStringBySID(int sid)
                         throws IOException

Throws:

IOException