From: "Clément Pit-Claudel" <cpitclaudel@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: emacs-devel@gnu.org
Subject: Re: Display certain glyphs with paddings on the side
Date: Tue, 3 Dec 2019 13:43:33 -0500 [thread overview]
Message-ID: <edf6799f-fb48-5097-02b8-78f724691cf2@gmail.com> (raw)
In-Reply-To: <83d0d5jom5.fsf@gnu.org>
On 2019-12-03 12:38, Eli Zaretskii wrote:
>> From: Clément Pit-Claudel <cpitclaudel@gmail.com>
>> Date: Tue, 3 Dec 2019 11:42:03 -0500
>>
>> I think Emacs might have most of the features needed already as part of the composition engine
>
> No, character composition does nothing to the width of glyphs on
> display. We take the width from the glyph metrics reported by the
> font.
For the OP's purpose, I think character composition is "enough", in the sense that it can be used to display a glyphs with padding on the sides (as far as I know, composition can't be used to shrink a glyph, however).
Concretely, I'm think of this:
(insert (compose-string "a" 0 1 '(?\s (br . bl) ?\s (bc . bc) ?我)))
If I'm reading the spec correctly, this should draw the character 我 with padding on both sides to reach the width of two spaces (assuming the choice of fonts is such as 我 is narrower than two spaces to being with).
Clément.
next prev parent reply other threads:[~2019-12-03 18:43 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-30 19:51 Display certain glyphs with paddings on the side Yuan Fu
2019-12-02 16:24 ` Eli Zaretskii
2019-12-03 4:56 ` Richard Stallman
2019-12-03 15:43 ` Eli Zaretskii
2019-12-03 15:49 ` Yuan Fu
2019-12-03 16:42 ` Clément Pit-Claudel
2019-12-03 17:38 ` Eli Zaretskii
2019-12-03 18:36 ` Yuri Khan
2019-12-03 18:42 ` Eli Zaretskii
2019-12-03 18:43 ` Clément Pit-Claudel [this message]
2019-12-03 19:13 ` Eli Zaretskii
2019-12-03 20:00 ` Clément Pit-Claudel
2019-12-04 1:22 ` Yuan Fu
2019-12-04 3:41 ` Eli Zaretskii
2019-12-02 18:34 ` 황병희
2019-12-03 15:51 ` Yuan Fu
2019-12-03 22:33 ` 황병희
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