From: Miles Bader <miles@gnu.org>
To: 黄建忠 <jianzhong.huang@i-soft.com.cn>
Cc: emacs-devel@gnu.org
Subject: Re: A patch for enforcing double-width CJK character display
Date: Tue, 17 Apr 2012 13:08:49 +0900 [thread overview]
Message-ID: <87wr5fdmpa.fsf@catnip.gol.com> (raw)
In-Reply-To: <4F8CDCE1.8030109@i-soft.com.cn> ("黄建忠"'s message of "Tue, 17 Apr 2012 11:00:49 +0800")
黄建忠 <jianzhong.huang@i-soft.com.cn> writes:
>>> So I'm wondering how you get the pixelsize of fonts?
>> I used "xzoom" to magnify the display, and counted the pixels... :]
>
> Wow :-D
> But a wrong way to get pixelsize:-(
>
> You have a very BIG BIG BIG misunderstanding of "glyph pixelsize".
That's silly.
It doesn't _matter_ what some definition says somewhere.
In the end, what _actually matters_ is how the characters are
displayed -- and the best way to judge how they are displayed is to
_look at the display_.
[The pixel counts I gave, BTW are actually "advance counts" -- the
number of pixels between the left edge of one character and the left
edge of the next character.]
So the point is that the numbers I have should be accurate in
terms of how the characters are actually displayed.
To reiterate:
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.
2) So, if you force the CJK characters to fit 2 * ASCII width, then
you obviously need to add (180 - 120) = 60 pixels of extra space
to those 10 CJK characters.
3) That's 6 extra pixels of whitespace (in addition to existing
whitespace) per CJK character.
4) Since each CJK character is 12-pixels wide, that increases the
character advance spacing by 50%...
Anyway, I'll try your patch, and see how it looks in reality.
Thanks,
-miles
--
Zeal, n. A certain nervous disorder afflicting the young and inexperienced.
next prev parent reply other threads:[~2012-04-17 4:08 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4F85A138.6090900@i-soft.com.cn>
2012-04-11 15:48 ` A patch for enforcing double-width CJK character display Kan-Ru Chen
2012-04-11 16:16 ` 黄建忠
2012-04-12 8:56 ` 黄建忠
2012-04-12 9:53 ` Eli Zaretskii
2012-04-12 11:18 ` 黄建忠
2012-04-12 14:27 ` Eli Zaretskii
2012-04-12 17:56 ` 黄建忠
2012-04-12 20:33 ` Stefan Monnier
[not found] ` <4F8782C8.2030005@i-soft.com.cn>
2012-04-13 11:42 ` 黄建忠
2012-04-13 12:03 ` 黄建忠
2012-04-13 13:27 ` Stefan Monnier
2012-04-15 5:10 ` Miles Bader
2012-04-15 13:27 ` 黄建忠
2012-04-15 16:08 ` William Xu
2012-04-15 22:19 ` Miles Bader
2012-04-16 0:51 ` 黄建忠
2012-04-16 5:27 ` Miles Bader
2012-04-16 5:40 ` 黄建忠
2012-04-16 6:37 ` 黄建忠
2012-04-16 9:21 ` 黄建忠
2012-04-17 2:16 ` 黄建忠
2012-04-17 0:13 ` Miles Bader
2012-04-17 0:39 ` Miles Bader
2012-04-17 2:00 ` 黄建忠
2012-04-17 2:30 ` Miles Bader
2012-04-17 3:00 ` 黄建忠
2012-04-17 4:08 ` Miles Bader [this message]
2012-04-17 4:56 ` Werner LEMBERG
2012-04-17 5:02 ` 黄建忠
2012-04-17 6:33 ` Miles Bader
2012-04-17 7:03 ` Werner LEMBERG
2012-04-17 5:52 ` Miles Bader
2012-04-17 6:10 ` 黄建忠
2012-04-17 7:02 ` Miles Bader
2012-04-17 8:06 ` Werner LEMBERG
2012-04-17 8:25 ` Miles Bader
2012-04-17 9:06 ` Werner LEMBERG
2012-04-17 8:51 ` 黄建忠
2012-04-17 6:45 ` Werner LEMBERG
2012-04-17 9:07 ` James Cloos
2012-04-17 9:27 ` 黄建忠
2012-04-17 1:47 ` 黄建忠
2012-04-18 6:54 ` Kenichi Handa
2012-04-18 8:13 ` 黄建忠
2012-04-18 13:58 ` Miles Bader
2014-04-28 5:35 JunJie Nan
2014-04-29 5:39 ` Stefan Monnier
2014-04-29 6:36 ` Jan D.
2014-04-29 8:16 ` Thien-Thi Nguyen
2014-04-29 20:41 ` Liang Wang
-- strict thread matches above, loose matches on Subject: below --
2014-04-30 2:00 Hui Liu
2014-04-30 17:08 ` Liang Wang
2014-10-04 3:26 Feng Shu
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