如何知道ctext与Itext中的字体兼容？ [英] How to know cmap compatible with font in Itext?

问题描述

我检查我的字体编码（字体的类型是OpenType字体），结果如下：

I check my font's encoding (the font's type is OpenType Font), the result is below :

PostScript name: HiraKakuProN-W3
Available code pages:
encoding[0] = 1252 Latin 1
encoding[1] = 1251 Cyrillic
encoding[2] = 1253 Greek
encoding[3] = 932 JIS/Japan

然后，按代码创建字体：

Then, creat font by code :

Font f = new Font(BaseFont.createFont("hirafont.otf", "Identity-V", BaseFont.EMBEDDED));

除身份-V和身份-H外，我不能使用其他cmaps等as（UniJISX0213-UTF32-H / V ......）。
在这个字体中，我看到许多字形以90度的旋转显示。如何将unicode中的char映射到字体中旋转的char字形？

Except "Identity-V" and "Identity-H", i can't use other cmaps such as ("UniJISX0213-UTF32-H/V ..."). And in this font i see many glyphs which is displayed in rotation of 90 degrees. How to map char in unicode to char's glyph which is rotation in font?

示例：'〔'（0x3014 12308 LEFT TORTOISE SHELL BRACKET）地图索引9265 in font

Example : '〔 ' (0x3014 12308 LEFT TORTOISE SHELL BRACKET) map with index 9265 in font

---------更新代码--------

---------update code--------

PdfEncodings.loadCmap("UniJISX0213-UTF32-V", PdfEncodings.CRLF_CID_NEWLINE);
String temp = "a";

byte[] text = temp.getBytes("Shift_JIS");
String cid = PdfEncodings.convertCmap("UniJISX0213-UTF32-V", text);
BaseFont bf = BaseFont.createFont("hiraginoFont.otf",BaseFont.IDENTITY_V, BaseFont.EMBEDDED);
Paragraph p = new Paragraph(cid, new Font(bf, 14));

推荐答案

我不得不深入研究我的第一本书参考你所问的问题。很久以前，我们曾经分发过以下jar： itext-asiancmaps.jar 。
这个jar不要与用于CJK字体的itext-asian.jar混淆。

I had to dig into my first book to find a reference to what you're asking. A long time ago, we used to distribute the following jar: itext-asiancmaps.jar. This jar is not to be confused with itext-asian.jar which is used for CJK fonts.

我花了一段时间才找到它的副本罐。你可以在这个旧的ZIP文件中找到它： extrajars-2.1.zip

It took me a while to find a copy of that jar. You'll find it in this old ZIP file: extrajars-2.1.zip

根据我的第一本书（2005-2006编写），您可以将此jar用于itext-asian中CMaps不支持的编码。 jar

According to my first book (written in 2005-2006), you can use this jar for encodings that are not supported by the CMaps in itext-asian.jar

它的用法如下：

PdfEncodings.loadCmap("GBK2K-H", PdfEncodings.CRLF_CID_NEWLINE);
byte[] text = my_GB_encoded_text;
String cid = PdfEncodings.convertCmap("GBK2K-H", text);
BaseFont bf = BaseFont.createFont("STSong-Light",
    BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
Paragraph p = new Paragraph(cid, new Font(bf, 14));
document.add(p);

如您所知 BaseFont.IDENTITY_H 和 BaseFont.IDENTITY_V 是2字节CID的水平和垂直标识映射。 PdfEncodings 类可以将特定编码中的 String 转换为 String 具有2字节CID。在这种情况下，原始字符串在GB 18030-2000中编码;我们需要将其转换为另一个 String ，以便iText可以使用 IDENTITY_H 编码。

As you know BaseFont.IDENTITY_H and BaseFont.IDENTITY_V are the horizontal and vertical identity mappings for 2-byte CIDs. The PdfEncodings class can convert a String in a specific encoding to a String with 2-byte CIDs. In this case, the original String was encoded in the GB 18030-2000; we needed to convert this to another String so that iText could use the IDENTITY_H encoding.

在我的第一本书中，我写道：为了完整起见，我插入了这个样本。在过去的三年中，只有少数人发布过有关此问题的问题。当我写第二本书（2009-2010）时，没有人问过这个功能，所以我放弃了用cmaps分发jar，示例没有写第二本书。

In my first book, I wrote: "I insert this sample for the sake of completeness. In the past three years, only a handful of people have posted questions about this." By the time I wrote my second book (2009-2010), nobody was asking about this functionality, so I dropped distributing the jar with the cmaps and the example didn't make the second book.

我现在正在复兴这个旧例子，希望它有用。我在2005年或2006年测试了一次，然后就开始工作了。我不能保证它今天仍然有效。

I am now reviving this old example in the hope that it is useful. I tested it once in 2005 or 2006, and it worked back then. I can't guarantee that it still works today.

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