From: "Ehud Karni" <ehud@unix.mvs.co.il>
Cc: emacs-devel@gnu.org
Subject: Re: Change `set-frame-font' to allow keeping of frame size
Date: Tue, 8 Apr 2003 22:16:59 +0300 [thread overview]
Message-ID: <200304081916.h38JGxDa022011@beta.mvs.co.il> (raw)
In-Reply-To: <E192isW-0000l6-00@fencepost.gnu.org> (message from Richard Stallman on Mon, 07 Apr 2003 22:30:28 -0400)
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On Mon, 07 Apr 2003 22:30:28 -0400, Richard Stallman <rms@gnu.org> wrote:
>
> If optional KEEP-SIZE is non nil the current frame size (in pixels)
> is kept by adjusting the frame `height' and `width' parameters"
>
> It should say explicitly what the default behavior is, rather than
> making the user try to guess. Also, it needs to say "non-nil",
> not "non nil".
>
> Aside from that, I think the optional feature is ok, but asking a question
> is obnoxious. Would you please make it test the prefix arg instead?
Here is the new definition:
(defun set-frame-font (font-name &optional keep-size)
"Set the font of the selected frame to FONT-NAME.
When called interactively, prompt for the name of the font to use.
To get the frame's current default font, use `frame-parameters'.
The default behavior is to keep the numbers of lines and columns in
the frame, thus may change its pixel size. If optional KEEP-SIZE is
non-nil (interactively, prefix argument) the current frame size (in
pixels) is kept by adjusting the numbers of the lines and columns."
(interactive
(let* ((completion-ignore-case t)
(font (completing-read "Font name: "
(mapcar #'list
;; x-list-fonts will fail with an error
;; if this frame doesn't support fonts.
(x-list-fonts "*" nil (selected-frame))))))
(list font current-prefix-arg)))
(let (fht fwd)
(if keep-size
(setq fht (* (frame-parameter nil 'height) (frame-char-height))
fwd (* (frame-parameter nil 'width) (frame-char-width))))
(modify-frame-parameters (selected-frame)
(list (cons 'font font-name)))
(if keep-size
(modify-frame-parameters
(selected-frame)
(list (cons 'height (round fht (frame-char-height)))
(cons 'width (round fwd (frame-char-width)))))))
(run-hooks 'after-setting-font-hook 'after-setting-font-hooks))
Ehud.
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prev parent reply other threads:[~2003-04-08 19:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-06 15:35 Change `set-frame-font' to allow keeping of frame size Ehud Karni
2003-04-06 23:07 ` Richard Stallman
2003-04-07 10:03 ` Ehud Karni
2003-04-08 2:30 ` Richard Stallman
2003-04-08 19:16 ` Ehud Karni [this message]
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