[PATCH] AWT DrawText Internationalization Problem

[Takashi Okamoto]

Hi, Kaffe!!

I have posted AWT internationalization patch already.
But I haven't taken any reply.
I post it again and I explain this patch more detail following URL:

 http://www.mycgiserver.com/~tora/java/diary/kaffe_en.html

The problem is that Kaffe AWT can't display multibyte characters
correctly. The principal reason is that Kaffe AWT use XDrawString16
and XFontStruct. I use XwcDrawString and XOC instead of these functions.


Could you fix it, Kaffe developers?


One more thing, we have following issue yet about AWT:

  - Font should be changed by external file (like font.properties.xx)
    for each locale.

  - Now we can't input multibyte character. We should use
    XIM ( XOpenXIM() ,XCreateXIC() ,XwcLookupString() ).


Does anyone fix these problems?

Please see above URL for more detail.

thanks.
---------------------
Takashi Okamoto


----- Original Message ----- 
From: "Takashi Okamoto" <toraneko at kun.ne.jp>
To: <kaffe at rufus.w3.org>
Sent: Wednesday, January 03, 2001 12:06 PM
Subject: [PATCH] AWT DrawText Internationalization Problem


> Hello ,Kaffe VM developers.
> 
> I made AWT internationalization patch.
> 
> Now ,we can't use multibyte character for X on Kaffe AWT.
> 
> Principal reason is that Kaffe's AWT have been constructed under
> single font model. I made a patch for this problem. It uses
> XwcDrawString instead of XDrawString16. If you are interested in it,
> please chec kattached file. And you must modify following line at
> Default.java for your fontset when you use this patch. for example:
> 
> original code at Default.java:
> 
>    String fntCat = Integer.toString(res) + '-' + res + "-*-*-*-*";
>    file://FsDefault = "-b&h-lucida-%s-%s-*-*-*-%d-" + fntCat;
>    FsDefault = "-adobe-helvetica-%s-%s-*-*-*-%d-"  + fntCat;
>    FsMonospaced = "-adobe-courier-%s-%s-*-*-*-%d-" + fntCat;
>    FsSansSerif = "-adobe-helvetica-%s-%s-*-*-*-%d-" + fntCat;
>    FsSerif = "-adobe-times-%s-%s-*-*-*-%d-" + fntCat;
>    FsDialog = "-misc-fixed-%s-%s-*-*-*-%d-" + fntCat;
>    FsDialogInput = "-b&h-lucidatypewriter-%s-%s-*-*-*-%d-" + fntCat;
>    FsZapfDingbats = "-adobe-new century schoolbook-%s-%s-*-*-*-%d-" +
> fntCat;
> 
> for japanese(kandata font):
> 
>    String fntCat = Integer.toString(res) + '-' + res + "-*-*-*-*";
>    file://FsDefault = "-b&h-lucida-%s-%s-*-*-*-%d-" + fntCat;
>    FsDefault = "-misc-kandata-%s-%s-normal--*-%d-"  + fntCat;
>    FsMonospaced = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
>    FsSansSerif = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
>    FsSerif = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
>    FsDialog = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
>    FsDialogInput = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
>    FsZapfDingbats = "-misc-kandata-%s-%s-normal--*-%d-" + fntCat;
> 
> 
> Note: Specified fontset should include all style.
>  (ex. -misc-kandata-medium-r-..
>       -misc-kandata-medium-i-..
>       -misc-kandata-bold-r-..
>       -misc-kandata-bold-i-..)
> 
> 
> I think default font should be modified by font.properties file (like
> SUN and IBM JDK).
> 
> 
> I also write main topic for this patch.
> 
> in library/clib/awt/X/gra.c
> 
>   XDrawString16( X->dsp, gr->drw, gr->gc, x+gr->x0, y+gr->y0, b, len);
> 
> XDrawString16 can't treat FontSet. It's only purpose for single font.
> So, it's not good for internationalization.
> I use XwcDrawString instead of XDrawString16.
> 
> 
> in library/clib/awt/X/fnt.c
> 
>   XFontStruct* fs = 0;
> 
>   -- snip --
> 
>   fs = XLoadQueryFont( X->dsp, buf);
> 
> 
> We must use XOC or XFontSet instead of XFontStruct for XwcDrawString.
> I used XOC for font set.
> 
> Regards.
> ----------------------------
> Takashi Okamoto
> 
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