Re: A patch for enforcing double-width CJK character display

[黄建忠]

Miles,

Another try:
Another "Lucida Sans TypeWriter" from Oracle JDK 1.6.
"Sazanami Mincho" from
"http://ja.cooltext.com/Download-Font-%E3%81%95%E3%81%96%E3%81%AA%E3%81%BF%E6%98%8E%E6%9C%9D+Sazanami+Mincho";

The width of this "lucida" font is correct in Emacs, and the font
display had no problem after cjk fix.

Maybe your system have a buggy "Lucida Sans TypeWriter" font, you can
try the lucida font released with JDK.
Hope the problem can be fixed.

于 2012年04月17日 13:52, Miles Bader 写道:
> Werner LEMBERG <address@hidden> writes:
>>>  1) In case 1, a 20-character sequence of ASCII characters takes 180
>>>     pixels to display, and a 10-character sequence of CJK characters
>>>     takes 120 pixels to display.
>> Mhmm.  The silent assumption of making a CJK and ASCII font fit is
>> that double-width characters are really double width in relation to
>> single-width characters.  In your example, the width of two ASCII
>> characters is 18px, while one CJK character is 12px.  Such two fonts
>> simply don't fit, and no clever algorithm will be able to make them
>> ever fit without scaling.
> Er, wait, what?
>
> It can be done trivially, by adding 3 pixels of whitespace on both
> sides of every CJK character...
>
> [Which is the source of my concern:  that in some cases it might be so
> much whitespace that the result looks funny.]
>
> -miles
>


-- 
Huang JianZhong

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