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: How to calculate X when dealing with truncate-lines non-nil. Date: Fri, 29 Sep 2017 19:13:39 +0300 Message-ID: <83r2up7aa4.fsf@gnu.org> References: Reply-To: Eli Zaretskii NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1506701638 25342 195.159.176.226 (29 Sep 2017 16:13:58 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 29 Sep 2017 16:13:58 +0000 (UTC) Cc: emacs-devel@gnu.org To: Keith David Bershatsky Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Sep 29 18:13:54 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 1dxxvF-0006BI-NN for ged-emacs-devel@m.gmane.org; Fri, 29 Sep 2017 18:13:53 +0200 Original-Received: from localhost ([::1]:36037 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dxxvM-0004tk-UX for ged-emacs-devel@m.gmane.org; Fri, 29 Sep 2017 12:14:00 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36814) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dxxvG-0004tc-Dd for emacs-devel@gnu.org; Fri, 29 Sep 2017 12:13:55 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dxxvD-00058n-8J for emacs-devel@gnu.org; Fri, 29 Sep 2017 12:13:54 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47959) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dxxvD-00058h-4K; Fri, 29 Sep 2017 12:13:51 -0400 Original-Received: from 84.94.185.246.cable.012.net.il ([84.94.185.246]:1337 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1dxxvC-0005HH-0D; Fri, 29 Sep 2017 12:13:50 -0400 In-reply-to: (message from Keith David Bershatsky on Wed, 27 Sep 2017 20:16:11 -0700) 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:218906 Archived-At: > Date: Wed, 27 Sep 2017 20:16:11 -0700 > From: Keith David Bershatsky > > In developing my own feature requests to draw crosshairs (#17684) using multiple fake cursors (#22873), I have reached a roadblock in understanding why > > move_it_to (&it, PT, it.last_visible_x, it.last_visible_y - 1, -1, MOVE_TO_POS | MOVE_TO_X | MOVE_TO_Y); > > is giving me an it.current_x of non-existent coordinates to the imaginary right of the visible window when truncate-lines is non-nil. > > For example, my screen is 1920 x 1080. When PT is somewhere to the right of the initial visible window, I'm getting X coordinates to a tune of 8,000 and so forth. > > How can I obtain the correct X, Y, HPOS, VPOS when dealing with a non-nil truncate-lines situation? You didn't show enough of your code to answer the question. Please show everything from the call to init_iterator or start_display to the above call to move_it_to.