Module org.verapdf.parser

Package org.verapdf.pd.font.type3

Class Type3CharProcParser

java.lang.Object

org.verapdf.parser.BaseParser

org.verapdf.parser.NotSeekableBaseParser

org.verapdf.pd.font.type3.Type3CharProcParser

All Implemented Interfaces:

Closeable, AutoCloseable

public class Type3CharProcParser
extends NotSeekableBaseParser

Parses type 3 char procs to obtain glyph widths.

Author:

Sergey Shemyakov

Field Summary

Fields inherited from class org.verapdf.parser.BaseParser

isPSParser, source, token

Constructor Summary

Constructors

Constructor	Description
Type3CharProcParser(ASInputStream charProcStream)	Constructor parser from char proc data.

Method Summary

Modifier and Type	Method	Description
double	getAscent()	Deprecated. a char proc that begins with the d0 operator specifies the glyph width only (ISO 32000-1, 9.6.5.3) and declares no glyph bounding box, so its ascent is undefined rather than 0.
Double	getAscentOrNull()
double	getDescent()	Deprecated. undefined descent cannot be distinguished from 0; use getDescentOrNull() instead.
Double	getDescentOrNull()
double	getWidth()
void	parse()	Parses width from given char proc string.

Methods inherited from class org.verapdf.parser.NotSeekableBaseParser

close, extendArray, findKeyword, getSource, isEndOfComment, readASCII85, skipComment, skipStreamSpaces

Methods inherited from class org.verapdf.parser.BaseParser

appendToToken, appendToToken, clearToken, decodeASCII85, findKeyword, getErrorMessage, getLine, getLineBytes, getToken, initializeToken, isCR, isDigit, isDigit, isFF, isLF, isPSParser, nextToken, readName, readNumber, readUntilDelimiter, skipSingleSpace, skipSpaces, skipSpaces

Methods inherited from class java.lang.Object

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

Constructor Details

Type3CharProcParser

public Type3CharProcParser(ASInputStream charProcStream)
                    throws IOException

Constructor parser from char proc data.

Throws:

IOException

Method Details

parse

public void parse()
           throws IOException

Parses width from given char proc string.

Throws:

IOException - if stream reading error occurred or input stream can't be parsed.

getWidth

public double getWidth()

Returns:

width of glyph presented by given char proc or -1 if parsing failed or was not performed.

getAscent

@Deprecated
public double getAscent()

Deprecated.

a char proc that begins with the d0 operator specifies the glyph width only (ISO 32000-1, 9.6.5.3) and declares no glyph bounding box, so its ascent is undefined rather than 0. This method cannot express that; use getAscentOrNull() instead.

Returns:

ascent of the glyph presented by given char proc, or 0 if the char proc declares no glyph bounding box.

getDescent

@Deprecated
public double getDescent()

Deprecated.

undefined descent cannot be distinguished from 0; use getDescentOrNull() instead. See getAscent().

Returns:

descent of the glyph presented by given char proc, or 0 if the char proc declares no glyph bounding box.

getAscentOrNull

public Double getAscentOrNull()

Returns:

ascent of the glyph presented by given char proc, or null if the char proc declares no glyph bounding box. A char proc that begins with the d0 operator specifies the glyph width only (ISO 32000-1, 9.6.5.3), so its ascent is undefined rather than 0.

getDescentOrNull

public Double getDescentOrNull()

Returns:

descent of the glyph presented by given char proc, or null if the char proc declares no glyph bounding box. See getAscentOrNull().