From: Yuan Fu <casouri@gmail.com>
To: "emacs-devel\\@gnu.org" <emacs-devel@gnu.org>
Subject: Add a function that returns pixel distance between points?
Date: Sat, 30 Jan 2021 15:47:38 -0500 [thread overview]
Message-ID: <960DAE7C-A1AF-416A-ACA5-F6674C87A2C9@gmail.com> (raw)
For aligning text according to their display size, I need to calculate the width of some text. Currently I’m using window-text-pixel-size, but it has some problem: if the text I’m measuring has line-prefix or wrap-prefix, the size returned will include the width of the prefix. So if the prefix is 14 pixels wide and the text is 7 pixels wide, the returned value is 21 instead of 7. Line number width is sometimes included in the result and sometimes not.
There is also posn-at-point but that requires the point to be visible in the window. My alignment function wants to run in jit-lock so point is not always visible, so I can’t use posn-at-point.
Yuan
next reply other threads:[~2021-01-30 20:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-30 20:47 Yuan Fu [this message]
2021-01-31 3:31 ` Add a function that returns pixel distance between points? Eli Zaretskii
2021-01-31 5:17 ` Yuan Fu
2021-01-31 5:52 ` Ihor Radchenko
2021-01-31 19:42 ` Yuan Fu
2021-01-31 15:24 ` Eli Zaretskii
2021-01-31 19:41 ` Yuan Fu
2021-01-31 20:13 ` Eli Zaretskii
2021-02-01 14:16 ` Yuan Fu
2021-02-01 18:22 ` Eli Zaretskii
2021-02-01 23:00 ` Yuan Fu
2021-02-02 16:29 ` Eli Zaretskii
2021-02-03 15:04 ` Eli Zaretskii
2021-02-03 16:48 ` Yuan Fu
2021-02-04 16:02 ` Eli Zaretskii
2021-02-05 10:15 ` martin rudalics
2021-02-05 12:25 ` Eli Zaretskii
2021-02-05 15:48 ` martin rudalics
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