Your changes are too specific and there are already other mechanisms to
take care of that. More comments below.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Feng Dihai
> Sent: Wednesday, November 01, 2006 8:18 AM
> To: itext-questions@lists.sourceforge.net
> Subject: [iText-questions] Enhancement (or changes) for Asian
> font support
>
> I tried to solve some problems when using iText to handle Asian font.
> My suggested solution is listed as below. There are some tiny
> modifications on original iText source code, and I have to distribute
> the modified editon to my clients. Please let me know if there is
> anything wrong for violating the license of iText.
>
> ( Modified source code can be downloaded from here:
> http://fengdh.googlepages.com/iTextenhancementsource.zip
> which are used only to show my solution, licence declaration and
> comments are still missed. BTW, i'm using iText-1.4.5 release.)
>
> [Problem 1]
> Description:
> CHOOSE embedment for TrueTypeFontUnicode or not
> When BaseFont.createFont(...) creates a TrueTypeFontUnicode object,
> it always sets "embedded=true" for the object.
> TrueTypeFontUnicode#writeFont(...) always assumes "embedded=true" and
> embedded font data in all cases, too.
> But when devlopping an application for users inside a local
> company, whose PCs are surely pre-installed with TrueType fonts of
> local language, why should we embedded those true type fonts?
> especially considering extra file size for embedded font data.
>
> My Solution
> Here is the what I modified for TrueTypeFontUnicode:
>
> void writeFont(PdfWriter writer, PdfIndirectReference ref, Object
> params[]) throws DocumentException, IOException {
> HashMap longTag = (HashMap)params[0];
>
> // <<< BEGIN: added by FeNG Dihai([EMAIL PROTECTED]),
> Oct. 12, 2006
> if (embedded) addRangeUni(longTag, true, subset);
> // >>> End
>
> Object metrics[] = longTag.values().toArray();
> Arrays.sort(metrics, this);
> PdfIndirectReference ind_font = null;
> PdfObject pobj = null;
> PdfIndirectObject obj = null;
> // sivan: cff
>
> // <<< BEGIN: added by FeNG Dihai([EMAIL PROTECTED]),
> Sep. 28, 2006
> if (embedded){
> // >>> END ::: should indent following if-block
>
> if (cff) {
> // nothing changed inside if-block
> ... ...
> }
>
> // <<< BEGIN: added by FeNG Dihai([EMAIL PROTECTED]),
> Sep. 28, 2006
> }
> // >>> END
>
> String subsetPrefix = "";
> ... ...
> }
>
> I didnot touch BaseFont, but use Java Reflection API to change
> value of TrueTypeFontUnicode#embeded field.
>
TrueType Unicode fonts must always be embedded otherwise you'll produce
a broken PDF. It might work but as the PDF only contains the glyph index
you'd have to make sure that you had exactly the same font in the
system.Just to give you an idea, Arial in Windows 2000 is different from
Windows XP.
>
> [Problem 2]
> Description:
> PROCESS external characters ( or EUDC font transparently)
> This problem is also discussed in mailing list archive before, see
>
> http://www.mail-archive.com/[EMAIL PROTECTED]
> net/msg05984.html
>
> http://article.gmane.org/gmane.comp.java.lib.itext.general/26496
>
> My Solution:
> First, I append one classe and one interface to handle dirty work.
> IEudcFontRegistry: Mapping normal BaseFont to an EUDC BaseFont,
> define it in your own way
> EnhancedPdfWriter: Holding an IEudcFontRegistry implemented
> object. When called from PdfContentByte#showText(String text) ,
> #processEudc(PdfContentByte contentByte, String text,
> PdfContentByte.GraphicState state) will split text into several parts
> if containing EUDC characters (\uE000-\uF8FF) , then render each parts
> using correct font.
>
> Next, a little change of PdfContentByte and TrueTypeFontUnicode.
> *** PdfContentByte ***
> public void showText(String text) {
> // <<< BEGIN: modified by FeNG dihai([EMAIL PROTECTED]), Nov. 1, 2006
> // If writer can handle external font, let it do
> if (writer instanceof EnhancedPdfWriter){
> if (((EnhancedPdfWriter)writer).isSupportEUDC()){
> if
> (((EnhancedPdfWriter)writer).processEudc(this, text, state)){
> return;
> }
> }
> }
>
> // Otherwise process as normaly
> showTextSimple(text);
> // >>> END
> }
>
> // <<< BEGIN: added by FeNG dihai([EMAIL PROTECTED]), Nov. 1, 2006
> void showTextSimple(String text) {
> showText2(text);
> content.append("Tj").append_i(separator);
> }
> // >>> END
>
> *** TrueTypeFontUnicode ***
> int getRawWidth(int c, String name) {
> // <<< BEGIN: added by Feng Dihai([EMAIL PROTECTED]),
> Nov. 1, 2006
> if (c<0xE000){
> // >>> END
> HashMap map = null;
> if (name == null || cmap31 == null)
> map = cmap10;
> else
> map = cmap31;
> if (map == null)
> return 0;
> int metric[] = (int[])map.get(new Integer(c));
> if (metric == null)
> return 0;
> return metric[1];
> // <<< BEGIN: added by Feng Dihai([EMAIL PROTECTED]),
> Nov. 1, 2006
> } else {
> return 1000;
> }
> // >>> END
> }
>
> Just call like below, EUDC font will be handled transparently.
> Document document = new Document();
> EnhancedPdfWriter writer =
> EnhancedPdfWriter.getInstance(document, output, new
> MyEudcFontRegistry());
>
> Conclusion:
> Text output through PdfContentByte#showText(String) is ok, but i
> don't know how to improve PdfContentByte#showText(PdfTextArray). In
> my case, it's not a problem.
> Another problem, bold style of EUDC character maybe not handled
> well (italic is ok).
>
EUDC fonts are regular fonts. There's already FontSelector to make
several fonts look like one.
Paulo
> --------------------------------------------------------------
> -----------
> Using Tomcat but need to do more? Need to support web
> services, security?
> Get stuff done quickly with pre-integrated technology to make
> your job easier
> Download IBM WebSphere Application Server v.1.0.1 based on
> Apache Geronimo
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&;
> dat=121642
> _______________________________________________
> iText-questions mailing list
> iText-questions@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/itext-questions
>
Aviso Legal:
Esta mensagem é destinada exclusivamente ao destinatário. Pode conter
informação confidencial ou legalmente protegida. A incorrecta transmissão desta
mensagem não significa a perca de confidencialidade. Se esta mensagem for
recebida por engano, por favor envie-a de volta para o remetente e apague-a do
seu sistema de imediato. É proibido a qualquer pessoa que não o destinatário de
usar, revelar ou distribuir qualquer parte desta mensagem.
Disclaimer:
This message is destined exclusively to the intended receiver. It may contain
confidential or legally protected information. The incorrect transmission of
this message does not mean the loss of its confidentiality. If this message is
received by mistake, please send it back to the sender and delete it from your
system immediately. It is forbidden to any person who is not the intended
receiver to use, distribute or copy any part of this message.
-------------------------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
iText-questions mailing list
iText-questions@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/itext-questions
