com.itextpdf.io.font

类 ItextTrueTypeFont

java.lang.Object

com.itextpdf.io.font.FontProgram

com.itextpdf.io.font.TrueTypeFont

com.itextpdf.io.font.ItextTrueTypeFont

所有已实现的接口:

Serializable

public class ItextTrueTypeFont
extends com.itextpdf.io.font.TrueTypeFont

iText TrueType字体解析器

由于 TrueTypeFont(OpenTypeParser fontParser) 构造器私有无法扩展自定义字体解析器，因此采用重载重新部分功能。 源码来自于Itext 7.1.13 的TrueTypeFont类 使用类ItextOpenTypeParser替换了类OpenTypeParser

从以下版本开始:

2024-3-21 18:36:35

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected int[][]	bBoxes
protected boolean	isVertical
protected com.itextpdf.io.util.IntHashtable	kerning The map containing the kerning information.

从类继承的字段 com.itextpdf.io.font.FontProgram

avgWidth, codeToGlyph, DEFAULT_WIDTH, encodingScheme, fontIdentification, fontMetrics, fontNames, isFontSpecific, registry, unicodeToGlyph, UNITS_NORMALIZATION

构造器概要

构造器

限定符	构造器和说明
protected	ItextTrueTypeFont()
	ItextTrueTypeFont(byte[] ttf)
	ItextTrueTypeFont(String path)

方法概要

限定符和类型	方法和说明
void	close()
Map<Integer,int[]>	getActiveCmap()
String[]	getCodePagesSupported() Gets the code pages supported by the font.
int	getDirectoryOffset() The offset from the start of the file to the table directory.
byte[]	getFontStreamBytes()
com.itextpdf.io.font.otf.OpenTypeGdefTableReader	getGdefTable()
com.itextpdf.io.font.otf.GlyphPositioningTableReader	getGposTable()
com.itextpdf.io.font.otf.GlyphSubstitutionTableReader	getGsubTable()
int	getKerning(com.itextpdf.io.font.otf.Glyph first, com.itextpdf.io.font.otf.Glyph second) Gets the kerning between two glyphs.
int	getPdfFontFlags()
byte[]	getSubset(Set<Integer> glyphs, boolean subset)
boolean	hasKernPairs()
boolean	isBuiltWith(String fontProgram)
boolean	isCff()
protected void	readGdefTable()
protected void	readGposTable()
protected void	readGsubTable()
void	updateUsedGlyphs(SortedSet<Integer> usedGlyphs, boolean subset, List<int[]> subsetRanges) The method will update usedGlyphs with additional range or with all glyphs if there is no subset.

从类继承的方法 com.itextpdf.io.font.FontProgram

countOfGlyphs, fixSpaceIssue, getAvgWidth, getCharBBox, getFontIdentification, getFontMetrics, getFontNames, getGlyph, getGlyphByCode, getKerning, getRegistry, getWidth, isFontSpecific, setBbox, setBold, setCapHeight, setFixedPitch, setFontFamily, setFontName, setFontStretch, setFontWeight, setItalicAngle, setRegistry, setStemH, setStemV, setTypoAscender, setTypoDescender, setXHeight, toString

从类继承的方法 java.lang.Object

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

字段详细资料

bBoxes

protected int[][] bBoxes

isVertical

protected boolean isVertical

kerning

protected com.itextpdf.io.util.IntHashtable kerning

The map containing the kerning information. It represents the content of table 'kern'. The key is an Integer where the top 16 bits are the glyph number for the first character and the lower 16 bits are the glyph number for the second character. The value is the amount of kerning in normalized 1000 units as an Integer. This value is usually negative.

构造器详细资料

ItextTrueTypeFont

protected ItextTrueTypeFont()

ItextTrueTypeFont

public ItextTrueTypeFont(String path)
                  throws IOException

抛出:

IOException

ItextTrueTypeFont

public ItextTrueTypeFont(byte[] ttf)
                  throws IOException

抛出:

IOException

方法详细资料

hasKernPairs

public boolean hasKernPairs()

覆盖:

hasKernPairs 在类中 com.itextpdf.io.font.TrueTypeFont

getKerning

public int getKerning(com.itextpdf.io.font.otf.Glyph first,
                      com.itextpdf.io.font.otf.Glyph second)

Gets the kerning between two glyphs.

覆盖:

getKerning 在类中 com.itextpdf.io.font.TrueTypeFont

参数:

first - the first glyph

second - the second glyph

返回:

the kerning to be applied

isCff

public boolean isCff()

覆盖:

isCff 在类中 com.itextpdf.io.font.TrueTypeFont

getActiveCmap

public Map<Integer,int[]> getActiveCmap()

覆盖:

getActiveCmap 在类中 com.itextpdf.io.font.TrueTypeFont

getFontStreamBytes

public byte[] getFontStreamBytes()

覆盖:

getFontStreamBytes 在类中 com.itextpdf.io.font.TrueTypeFont

getPdfFontFlags

public int getPdfFontFlags()

覆盖:

getPdfFontFlags 在类中 com.itextpdf.io.font.TrueTypeFont

getDirectoryOffset

public int getDirectoryOffset()

The offset from the start of the file to the table directory. It is 0 for TTF and may vary for TTC depending on the chosen font.

覆盖:

getDirectoryOffset 在类中 com.itextpdf.io.font.TrueTypeFont

返回:

directory Offset

getGsubTable

public com.itextpdf.io.font.otf.GlyphSubstitutionTableReader getGsubTable()

覆盖:

getGsubTable 在类中 com.itextpdf.io.font.TrueTypeFont

getGposTable

public com.itextpdf.io.font.otf.GlyphPositioningTableReader getGposTable()

覆盖:

getGposTable 在类中 com.itextpdf.io.font.TrueTypeFont

getGdefTable

public com.itextpdf.io.font.otf.OpenTypeGdefTableReader getGdefTable()

覆盖:

getGdefTable 在类中 com.itextpdf.io.font.TrueTypeFont

getSubset

public byte[] getSubset(Set<Integer> glyphs,
                        boolean subset)

覆盖:

getSubset 在类中 com.itextpdf.io.font.TrueTypeFont

readGdefTable

protected void readGdefTable()
                      throws IOException

覆盖:

readGdefTable 在类中 com.itextpdf.io.font.TrueTypeFont

抛出:

IOException

readGsubTable

protected void readGsubTable()
                      throws IOException

覆盖:

readGsubTable 在类中 com.itextpdf.io.font.TrueTypeFont

抛出:

IOException

readGposTable

protected void readGposTable()
                      throws IOException

覆盖:

readGposTable 在类中 com.itextpdf.io.font.TrueTypeFont

抛出:

IOException

getCodePagesSupported

public String[] getCodePagesSupported()

Gets the code pages supported by the font.

覆盖:

getCodePagesSupported 在类中 com.itextpdf.io.font.TrueTypeFont

返回:

the code pages supported by the font

isBuiltWith

public boolean isBuiltWith(String fontProgram)

覆盖:

isBuiltWith 在类中 com.itextpdf.io.font.TrueTypeFont

close

public void close()
           throws IOException

覆盖:

close 在类中 com.itextpdf.io.font.TrueTypeFont

抛出:

IOException

updateUsedGlyphs

public void updateUsedGlyphs(SortedSet<Integer> usedGlyphs,
                             boolean subset,
                             List<int[]> subsetRanges)

The method will update usedGlyphs with additional range or with all glyphs if there is no subset. This set of used glyphs can be used for building width array and ToUnicode CMAP.

覆盖:

updateUsedGlyphs 在类中 com.itextpdf.io.font.TrueTypeFont

参数:

usedGlyphs - a set of integers, which are glyph ids that denote used glyphs. This set is updated inside of the method if needed.

subset - subset status

subsetRanges - additional subset ranges