From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Ehud Karni" Newsgroups: gmane.emacs.help,gmane.emacs.devel Subject: New balance-windows (Was Re: Making the width of three windows equal) Date: Sat, 6 Aug 2005 14:59:18 +0300 Organization: Mivtach-Simon Insurance agencies Message-ID: <200508061159.j76BxILQ018985@beta.mvs.co.il> References: <87pssv3kai.fsf@thalassa.informatimago.com> <1123035204.009217.187300@g14g2000cwa.googlegroups.com> <87fytr3ea2.fsf@thalassa.informatimago.com> Reply-To: ehud@unix.mvs.co.il NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-8-i Content-Transfer-Encoding: 7bit X-Trace: sea.gmane.org 1123329929 28347 80.91.229.2 (6 Aug 2005 12:05:29 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sat, 6 Aug 2005 12:05:29 +0000 (UTC) Cc: knipknap@jabber.org, help-gnu-emacs@gnu.org, spam@mouse-potato.com Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Aug 06 14:05:26 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1E1NQL-0006Yw-6r for geh-help-gnu-emacs@m.gmane.org; Sat, 06 Aug 2005 14:05:09 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1E1NTE-000266-TE for geh-help-gnu-emacs@m.gmane.org; Sat, 06 Aug 2005 08:08:09 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1E1NNl-0000Gw-Pn for help-gnu-emacs@gnu.org; Sat, 06 Aug 2005 08:02:32 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1E1NNj-0000Fo-TE for help-gnu-emacs@gnu.org; Sat, 06 Aug 2005 08:02:28 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1E1NNf-0008Va-Ls; Sat, 06 Aug 2005 08:02:23 -0400 Original-Received: from [193.16.147.12] (helo=unix.mvs.co.il) by monty-python.gnu.org with esmtp (Exim 4.34) id 1E1NXx-0008VF-MK; Sat, 06 Aug 2005 08:13:03 -0400 Original-Received: from beta.mvs.co.il (beta [10.253.0.3]) by unix.mvs.co.il (8.13.0/8.13.0) with ESMTP id j76BxKpC023980 for ; Sat, 6 Aug 2005 14:59:20 +0300 Original-Received: from beta.mvs.co.il (localhost [127.0.0.1]) by beta.mvs.co.il (8.13.4/8.13.4) with ESMTP id j76BxJjA018988 for ; Sat, 6 Aug 2005 14:59:19 +0300 Original-Received: (from root@localhost) by beta.mvs.co.il (8.13.4/8.13.4/Submit) id j76BxILQ018985; Sat, 6 Aug 2005 14:59:18 +0300 Original-To: "Emacs Devel" In-reply-to: <87fytr3ea2.fsf@thalassa.informatimago.com> (message from Pascal Bourguignon on Wed, 03 Aug 2005 05:11:49 +0200) X-Mailer: Emacs 21.3.1 rmail (send-msg 1.108) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:28475 gmane.emacs.devel:41588 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:41588 Following the recent discussion of `balance-windows' on help-gnu-emacs I looked into it and wrote a replacement (new) function based on somewhat different logic to achieve the balancing. The logic is this: group all windows that has the same "left" (or "top" for horizontal) edge, and balance their height (width). The actual resizing is dependent on the window structure. e.g. the two symmetrical window structures below will be balanced differently (the diagrams are after vertical balancing): +-------+--------+ +-------+--------+ | | | | | | | 1 / 3 | | | | 1 / 4 | | | | | 1 / 2 +--------+ +-------| 2 / 3 | | | | | | | | | 1 / 4 | | 1 / 3 | | +-------+--------+ | | | | | +-------+--------+ | | | | | 1 / 2 | | 1 / 3 | | | | | | | +-------+--------+ +-------+--------+ On the other hand if the windows are more "normally" built it works fine (diagrams after horizontal balancing): +-----+-----+------+----+ +-------+-------+-------+ | 1/4 | 1/4 | 1/4 | 1/4 | | 1 / 3 | 1 / 3 | 1 / 3 | | | | | | | | | | +-----+-+---+---+-+-----+ +-----+-+---+---+-+-----+ | | | | | | | | | | 1 / 3 | 1 / 3 | 1 / 3 | | 1/4 | 1/4 | 1/4 | 1/4 | +-------+-------+-------+ +-----+-----+------+----+ To balance horizontally just add a prefix argument (i.e. C-u). Note. I don't have CVS write permission, so if some of the developers find this as adequate replacement to `balance-windows' please add it. Ehud. (defun balance-windows (&optional horizontally) "Make all visible windows on the current frame the same size (approximately). If optional prefix arg is not given, \"same size\" is same height. When prefix arg is given, \"same size\" is same width." (interactive "P") (let* (count size w cmjr resize max rpt (edge (if horizontally 0 1)) ;; Minor field to sort by 0=LEFT, 1=TOP (mjr (- 1 edge)) ;; Major field to sort (far (+ 2 edge)) ;; far edge (right/bottom) (windows nil) ;; list of windows (ix 0) nwin ;; number of windows (pass 1) ;; pass number (curw (selected-window)) ;; selected window (to return to) ) ;; Build and sort list of all windows on frame (save-window-excursion (walk-windows (function (lambda (w) (let ((ltrb (window-edges w))) (setq windows (cons (list (nth mjr ltrb) (nth edge ltrb) (nth far ltrb) w) windows))))) 'nomini) (setq windows (sort windows (lambda (e1 e2) (if (< (nth 0 e1) (nth 0 e2)) t (if (= (nth 0 e1) (nth 0 e2)) (if (< (nth 1 e1) (nth 2 e2)) t))))))) (setq nwin (length windows)) ;; add 1 extra entry (for while check) (setq windows (append windows '((-1 -1 -1 nil)))) (while (< ix nwin) ; walk on all (sorted) windows (setq count 0) ; number of windows in 1 column (or row) (setq cmjr (car (nth ix windows))) ; column / raw identification (while (= cmjr (car (nth (+ count ix) windows))) ; same (setq count (1+ count))) ; count them (if (= count 1) ; only one window in this column/row (setq ix (1+ ix)) ; skip it ; compute and resize windows (setq size (if (= pass 1) ; on pass 1 the saved edges have not changed (- (nth 2 (nth (1- (+ count ix)) windows)) (nth 1 (nth ix windows))) ;; previous changes may changed the window edges (- (nth far (window-edges (nth 3 (nth (1- (+ count ix)) windows)))) (nth edge (window-edges (nth 3 (nth ix windows))))))) (setq size (/ (+ size count -1) count)) ; average window size (setq max (+ ix count)) ; index of next column/row ;; the resizing loop must be done twice ;; because later change may resize previous window (setq rpt 2) (while (> rpt 0) (setq rpt (1- rpt)) (while (< ix max) (setq w (nth 3 (nth ix windows))) (setq resize (- size (- (nth far (window-edges w)) (nth edge (window-edges w))))) ; don't resize by 1 character (if (or (> resize 1) (< resize -1)) (progn (select-window w) ; window to work on (enlarge-window resize horizontally))) (setq ix (1+ ix))) (setq ix (- max count))) (setq ix max) (setq pass 2))) (select-window curw))) -- Ehud Karni Tel: +972-3-7966-561 /"\ Mivtach - Simon Fax: +972-3-7966-667 \ / ASCII Ribbon Campaign Insurance agencies (USA) voice mail and X Against HTML Mail http://www.mvs.co.il FAX: 1-815-5509341 / \ GnuPG: 98EA398D Better Safe Than Sorry