From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: Pixel-based display functions Date: Sun, 08 Feb 2015 20:37:16 +0200 Message-ID: <83wq3s9rmr.fsf@gnu.org> References: <54CDE908.7050908@gmx.at> <87ioflq0dz.fsf@building.gnus.org> <54CE2187.9070003@gmx.at> <83lhkhiq8t.fsf@gnu.org> <54CE54A3.1020707@gmx.at> <838ughilmo.fsf@gnu.org> <54CE6BD2.8000402@gmx.at> <8361bliin0.fsf@gnu.org> <83386piiby.fsf@gnu.org> <87oap9yoti.fsf@building.gnus.org> <874mqzvnwo.fsf@building.gnus.org> <83h9uzeb4a.fsf@gnu.org> <87bnl7jrr7.fsf@building.gnus.org> <831tm3dt8u.fsf@gnu.org> <87k2zvgj4d.fsf@building.gnus.org> <83siejcahb.fsf@gnu.org> <83sieiar6i.fsf@gnu.org> <83oap5c480.fsf@gnu.org> <87d25lc3xu.fsf@building.gnus.org> <877fvtc2qj.fsf@building.gnus.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1423420667 22253 80.91.229.3 (8 Feb 2015 18:37:47 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 8 Feb 2015 18:37:47 +0000 (UTC) Cc: rudalics@gmx.at, emacs-devel@gnu.org To: Lars Ingebrigtsen Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun Feb 08 19:37:47 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1YKWjo-0005sh-WC for ged-emacs-devel@m.gmane.org; Sun, 08 Feb 2015 19:37:45 +0100 Original-Received: from localhost ([::1]:57413 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKWjo-0007vK-Au for ged-emacs-devel@m.gmane.org; Sun, 08 Feb 2015 13:37:44 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:56722) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKWji-0007vE-Hb for emacs-devel@gnu.org; Sun, 08 Feb 2015 13:37:42 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YKWje-0002EL-IU for emacs-devel@gnu.org; Sun, 08 Feb 2015 13:37:38 -0500 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:52957) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YKWje-0002EE-AQ for emacs-devel@gnu.org; Sun, 08 Feb 2015 13:37:34 -0500 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0NJG00600UDRM800@a-mtaout22.012.net.il> for emacs-devel@gnu.org; Sun, 08 Feb 2015 20:37:32 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NJG006GWUEK55B0@a-mtaout22.012.net.il>; Sun, 08 Feb 2015 20:37:32 +0200 (IST) In-reply-to: <877fvtc2qj.fsf@building.gnus.org> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: Solaris 10 X-Received-From: 80.179.55.172 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 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-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:182634 Archived-At: > From: Lars Ingebrigtsen > Date: Sat, 07 Feb 2015 23:42:12 +1100 > Cc: rudalics@gmx.at, emacs-devel@gnu.org > > Would it be possible to get a "go to pixel position X on the current > line" function that's faster than the current `vertical-motion' function > if there are some ... assumptions we could make? Or something? :-) I think I can make it faster if we add an additional optional argument that tells vertical-motion the X coordinate at point. vertical-motion invests a lot of cycles in finding a place whose X coordinate is known, so providing that for its starting point will avoid all that effort. Will this help you, i.e. can you provide such a value with each call?