From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Is there a built-in way to tell how many lines are in a window in a given face? Date: Sat, 15 Apr 2017 10:44:58 +0300 Message-ID: <838tn2glmt.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1492242312 13932 195.159.176.226 (15 Apr 2017 07:45:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 15 Apr 2017 07:45:12 +0000 (UTC) Cc: emacs-devel@gnu.org To: Zachary Kanfer Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sat Apr 15 09:45:05 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1czIOH-0003Rn-Ef for ged-emacs-devel@m.gmane.org; Sat, 15 Apr 2017 09:45:05 +0200 Original-Received: from localhost ([::1]:55785 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1czION-0004rp-9j for ged-emacs-devel@m.gmane.org; Sat, 15 Apr 2017 03:45:11 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:47676) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1czINo-0004rk-Ga for emacs-devel@gnu.org; Sat, 15 Apr 2017 03:44:37 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1czINl-0002AK-Dl for emacs-devel@gnu.org; Sat, 15 Apr 2017 03:44:36 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42208) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1czINl-00029l-Ap; Sat, 15 Apr 2017 03:44:33 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:4103 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1czINk-0008Pi-8x; Sat, 15 Apr 2017 03:44:32 -0400 In-reply-to: (message from Zachary Kanfer on Sat, 15 Apr 2017 01:14:43 -0400) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:213969 Archived-At: > From: Zachary Kanfer > Date: Sat, 15 Apr 2017 01:14:43 -0400 > > (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))) This doesn't take line-spacing into account, I think. What are the use cases where you need these metrics of the window? I'm not sure I understand the need for these facilities; e.g., why not do all your calculations in pixels? Or maybe fit-window-to-buffer will do what you want?