Module com.github.librepdf.openpdf

Package com.lowagie.text.pdf

Class CMapAwareDocumentFont

java.lang.Object

com.lowagie.text.pdf.BaseFont

com.lowagie.text.pdf.DocumentFont

com.lowagie.text.pdf.CMapAwareDocumentFont

public class CMapAwareDocumentFont
extends DocumentFont

Implementation of DocumentFont used while parsing PDF streams.

Since:

2.1.4

Field Summary

Fields inherited from class com.lowagie.text.pdf.BaseFont

ASCENT, AWT_ASCENT, AWT_DESCENT, AWT_LEADING, AWT_MAXADVANCE, BBOXLLX, BBOXLLY, BBOXURX, BBOXURY, BuiltinFonts14, CACHED, CAPHEIGHT, CHAR_RANGE_ARABIC, CHAR_RANGE_CYRILLIC, CHAR_RANGE_HEBREW, CHAR_RANGE_LATIN, charBBoxes, CID_NEWLINE, compressionLevel, COURIER, COURIER_BOLD, COURIER_BOLDOBLIQUE, COURIER_OBLIQUE, CP1250, CP1252, CP1257, DESCENT, differences, directTextToByte, embedded, EMBEDDED, encoding, fastWinansi, FONT_TYPE_CJK, FONT_TYPE_DOCUMENT, FONT_TYPE_T1, FONT_TYPE_T3, FONT_TYPE_TT, FONT_TYPE_TTUNI, fontCache, fontSpecific, forceWidthsOutput, HELVETICA, HELVETICA_BOLD, HELVETICA_BOLDOBLIQUE, HELVETICA_OBLIQUE, IDENTITY_H, IDENTITY_V, includeCidSet, ITALICANGLE, MACROMAN, NOT_CACHED, NOT_EMBEDDED, notdef, RESOURCE_PATH, secureRandom, specialMap, STRIKETHROUGH_POSITION, STRIKETHROUGH_THICKNESS, SUBSCRIPT_OFFSET, SUBSCRIPT_SIZE, subset, subsetRanges, SUPERSCRIPT_OFFSET, SUPERSCRIPT_SIZE, SYMBOL, TIMES_BOLD, TIMES_BOLDITALIC, TIMES_ITALIC, TIMES_ROMAN, UNDERLINE_POSITION, UNDERLINE_THICKNESS, unicodeDifferences, widths, WINANSI, ZAPFDINGBATS

Constructor Summary

Constructors

Constructor	Description
CMapAwareDocumentFont(PRIndirectReference refFont)	Creates an instance of a CMapAwareFont based on an indirect reference to a font.

Method Summary

Modifier and Type	Method	Description
String	decode(byte[] cidbytes, int offset, int len)	Decodes a string of bytes (encoded in the font's encoding) into a unicode string.
String	decode(char c)	Decode single character whose value represents a code point in this font.
String	decode(String chars)	Decodes a string.
int	getWidth(int char1)	Gets the width of a char in normalized 1000 units.
boolean	hasTwoByteUnicodeCMAP()
boolean	hasUnicodeCMAP()

Methods inherited from class com.lowagie.text.pdf.DocumentFont

charExists, getAllNameEntries, getCharBBox, getFamilyFontName, getFontDescriptor, getFontDescriptor, getFullFontName, getFullFontStream, getKerning, getPostscriptFontName, getRawCharBBox, getWidth, hasKernPairs, setKerning, setPostscriptFontName, toString

Methods inherited from class com.lowagie.text.pdf.BaseFont

addSubsetRange, correctArabicAdvance, createEncoding, createFont, createFont, createFont, createFont, createFont, createFont, createFont, createSubsetPrefix, enumerateTTCNames, enumerateTTCNames, getAllFontNames, getAllNameEntries, getAscent, getAscentPoint, getBaseName, getCidCode, getCodePagesSupported, getCompressionLevel, getDescent, getDescentPoint, getDifferences, getDocumentFonts, getDocumentFonts, getEncoding, getFontType, getFullFontName, getResourceStream, getResourceStream, getSecureRandom, getUnicodeDifferences, getUnicodeEquivalent, getWidthPoint, getWidthPoint, getWidthPointKerned, getWidths, isDirectTextToByte, isEmbedded, isFontSpecific, isForceWidthsOutput, isIncludeCidSet, isSubset, normalizeEncoding, setCharAdvance, setCompressionLevel, setDirectTextToByte, setForceWidthsOutput, setIncludeCidSet, setSecureRandom, setSubset

Methods inherited from class java.lang.Object

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

Constructor Detail

CMapAwareDocumentFont

public CMapAwareDocumentFont(PRIndirectReference refFont)

Creates an instance of a CMapAwareFont based on an indirect reference to a font.

Parameters:

refFont - the indirect reference to a font

Method Detail

getWidth

public int getWidth(int char1)

Description copied from class: DocumentFont

Gets the width of a char in normalized 1000 units.

Overrides:

getWidth in class DocumentFont

Parameters:

char1 - the unicode char to get the width of

Returns:

the width in normalized 1000 units

Since:

2.1.5 Override to allow special handling for fonts that don't specify width of space character

See Also:

DocumentFont.getWidth(int)

hasUnicodeCMAP

public boolean hasUnicodeCMAP()

Returns:

true if this font has unicode information available.

hasTwoByteUnicodeCMAP

public boolean hasTwoByteUnicodeCMAP()

Returns:

true if this font has unicode information available and if it is two bytes.

decode

public String decode(byte[] cidbytes,
                     int offset,
                     int len)

Decodes a string of bytes (encoded in the font's encoding) into a unicode string. This will use the ToUnicode map of the font, if available, otherwise it uses the font's encoding

Parameters:

cidbytes - the bytes that need to be decoded

len - length

offset - offset

Returns:

the unicode String that results from decoding

Since:

2.1.7

decode

public String decode(String chars)

Decodes a string. This is a normal Java string, but if the range of character values exceeds the range of the encoding for the font, this will fail. Required since we need to process the characters of strings, and we can't determine the character boundaries in advance, especially because of Identity-H encoded fonts which have two-byte character indexes.

PdfString is used to hold character code points, even though the bytes may not map 1-1. It's not possible to change the encoding once a string is in place.

Parameters:

chars - the Characters that need to be decoded

Returns:

the unicode String that results from decoding

Since:

2.1.

decode

public String decode(char c)
              throws Error

Decode single character whose value represents a code point in this font. Will fail if the characters do not have values that correspond to valid code points for the font.

Parameters:

c - character to decode

Returns:

Unicode character corresponding to the remapped code according to the font's current encoding.

Throws:

Error - if the the character is out of range