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From: Zachary Kanfer <zkanfer@gmail.com>
To: emacs-devel@gnu.org
Subject: Is there a built-in way to tell how many lines are in a window in a given face?
Date: Sat, 15 Apr 2017 01:14:43 -0400	[thread overview]
Message-ID: <CAFXT+RPOzBhtC3-GPuNEHa_wqfwsjOd+NqPK390axLHJOLFuaQ@mail.gmail.com> (raw)

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If I want to know how wide a window is, in terms of characters of a given
face, I can use #'window-max-chars-per-line (
https://www.gnu.org/software/emacs/manual/html_node/elisp/Window-Sizes.html#index-window_002dmax_002dchars_002dper_002dline
).

But if I want to know how tall a window is in terms of characters of a
given face, I don't think there's a built-in method to do so. At least, I
can't seem to find it.

So I wrote one. This would be nice to get into Emacs if I haven't missed
any existing functionality. My code :

(defun zck--window-max-lines-per-window (face &optional window)
  "Calculate how many lines of text with face FACE can fit in WINDOW."
  (truncate (window-body-height window t)
            (window-font-height window face)))

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             reply	other threads:[~2017-04-15  5:14 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-15  5:14 Zachary Kanfer [this message]
2017-04-15  7:44 ` Is there a built-in way to tell how many lines are in a window in a given face? Eli Zaretskii
2017-04-15 20:27   ` Zachary Kanfer
2017-04-17  9:05     ` Eli Zaretskii

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