org.ofdrw.converter.font

Class TrueTypeFont

java.lang.Object

org.ofdrw.converter.font.TrueTypeFont

All Implemented Interfaces:

FontDrawPathProvider, GlyphDataProvider

public class TrueTypeFont
extends Object
implements GlyphDataProvider, FontDrawPathProvider

TrueType 字体解析器

https://docs.microsoft.com/zh-cn/typography/opentype/spec/otff

CMAP见

https://docs.microsoft.com/zh-cn/typography/opentype/spec/cmap

Since:

2021-09-28 21:05:09

Author:

权观宇

Field Summary

Fields

Modifier and Type	Field and Description
String	fontFamily 字体名称来资源有 name表
String	fontSubFamily
String	psName

Constructor Summary

Constructors

Constructor and Description
TrueTypeFont()

Method Summary

Modifier and Type	Method and Description
List<Number>	getFontMatrix() 获取变换矩阵
GlyphData	getGlyph(int gid) 通过字形的Index获取字形数据
GeneralPath	getPath(int gid) 通过字体索引号获取字形绘制路径
CmapSubtable	getSubtable(int platformId, int platformEncodingId) 获取特定平台特定编码的字符映射子表
org.apache.fontbox.ttf.CmapLookup	getUnicodeCmapLookup() 获取Unicode到字形的映射表
GlyphData	getUnicodeGlyph(int code) 通过Unicode获取字形数据
TrueTypeFont	parse(byte[] buf) 创建TTF字体解析器
TrueTypeFont	parse(InputStream in) 创建TTF字体解析器
TrueTypeFont	parse(Path inPath) 创建TTF字体解析器
TrueTypeFont	parse(TTFDataStream raf) 解析字体
CmapSubtable[]	readCMap(long cmapOffset, TTFDataStream data) 解析cmap

Methods inherited from class java.lang.Object

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

Field Detail

fontFamily

public String fontFamily

字体名称来资源有 name表

fontSubFamily

public String fontSubFamily

psName

public String psName

Constructor Detail

TrueTypeFont

public TrueTypeFont()

Method Detail

parse

public TrueTypeFont parse(InputStream in)
                   throws IOException

创建TTF字体解析器

Parameters:

in - 流

Returns:

this

Throws:

IOException - IOE

parse

public TrueTypeFont parse(byte[] buf)
                   throws IOException

创建TTF字体解析器

Parameters:

buf - 读取到内存的字体数据

Returns:

this

Throws:

IOException - IOE

parse

public TrueTypeFont parse(Path inPath)
                   throws IOException

创建TTF字体解析器

Parameters:

inPath - 字体文件路径

Returns:

this

Throws:

IOException - IOE

parse

public TrueTypeFont parse(TTFDataStream raf)
                   throws IOException

解析字体

Parameters:

raf - 随机读取字体

Returns:

this

Throws:

IOException - IOE

getGlyph

public GlyphData getGlyph(int gid)
                   throws IOException

通过字形的Index获取字形数据

Specified by:

getGlyph in interface GlyphDataProvider

Parameters:

gid - 字形Index

Returns:

字形数据

Throws:

IOException - IOE

getPath

public GeneralPath getPath(int gid)
                    throws IOException

通过字体索引号获取字形绘制路径

Specified by:

getPath in interface FontDrawPathProvider

Parameters:

gid - 字形索引号

Returns:

字形路径或null

Throws:

IOException - 字体解析异常

readCMap

public CmapSubtable[] readCMap(long cmapOffset,
                               TTFDataStream data)
                        throws IOException

解析cmap

Parameters:

cmapOffset - cmap开始偏移量

data - 随机访问流

Returns:

cmap子表数组

Throws:

IOException - IOE

getSubtable

public CmapSubtable getSubtable(int platformId,
                                int platformEncodingId)

获取特定平台特定编码的字符映射子表

Returns the subtable, if any, for the given platform and encoding.

Parameters:

platformId - 平台ID

platformEncodingId - 平台编码ID

Returns:

映射子表

getUnicodeCmapLookup

public org.apache.fontbox.ttf.CmapLookup getUnicodeCmapLookup()

获取Unicode到字形的映射表

Returns:

映射表

Throws:

IllegalArgumentException - 字体没有cmap表

getUnicodeGlyph

public GlyphData getUnicodeGlyph(int code)
                          throws IOException

通过Unicode获取字形数据

如果没有cmap那么返回空白字符

Parameters:

code - unicode

Returns:

字符数据

Throws:

IOException - 字体文件解析异常

getFontMatrix

public List<Number> getFontMatrix()

获取变换矩阵

Returns:

矩阵序列