From: Po Lu <luangruo@yahoo.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: help-gnu-emacs@gnu.org
Subject: Re: Correct way to implement `pixel-point-and-height-at-unseen-line'?
Date: Tue, 14 Dec 2021 21:48:35 +0800 [thread overview]
Message-ID: <871r2fthzg.fsf@yahoo.com> (raw)
In-Reply-To: <83bl1jl3ej.fsf@gnu.org> (Eli Zaretskii's message of "Tue, 14 Dec 2021 15:30:44 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
> Did you try something like this:
>
> (save-excursion
> (goto-char (window-start))
> (vertical-motion (- (ceiling N (frame-char-height))))
> (point))
>
> where N is your number of pixels?
That won't always work correctly with lines of different height: for
example, if the line above start is smaller than the default character
height of the frame, the number of lines by which to move upwards could
be too small.
next prev parent reply other threads:[~2021-12-14 13:48 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87pmq1wag9.fsf.ref@yahoo.com>
2021-12-13 1:38 ` Correct way to implement `pixel-point-and-height-at-unseen-line'? Po Lu
2021-12-13 2:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-12-13 2:49 ` Po Lu
2021-12-13 3:04 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-12-13 3:18 ` Po Lu
2021-12-13 23:41 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-12-14 0:41 ` Po Lu
2021-12-13 14:32 ` Eli Zaretskii
2021-12-14 0:41 ` Po Lu
2021-12-14 13:30 ` Eli Zaretskii
2021-12-14 13:48 ` Po Lu [this message]
2021-12-14 14:26 ` Eli Zaretskii
2021-12-15 0:40 ` Po Lu
2021-12-15 13:11 ` Eli Zaretskii
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