From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/43866 Path: news.gmane.org!not-for-mail From: "Thomas A. Schmitz" Newsgroups: gmane.comp.tex.context Subject: fitting a picture to the available space Date: Thu, 11 Sep 2008 00:06:28 +0200 Message-ID: <396E487E-2550-48FB-BF43-BC51ED2388F4@uni-bonn.de> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 (Apple Message framework v926) Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1221084614 10206 80.91.229.12 (10 Sep 2008 22:10:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 10 Sep 2008 22:10:14 +0000 (UTC) To: mailing ConTeXt users list for Original-X-From: ntg-context-bounces@ntg.nl Thu Sep 11 00:11:08 2008 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from ronja.vet.uu.nl ([131.211.172.88] helo=ronja.ntg.nl) by lo.gmane.org with esmtp (Exim 4.50) id 1KdXsD-0004Bx-TX for gctc-ntg-context-518@m.gmane.org; Thu, 11 Sep 2008 00:09:17 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 10BEE1FE48; Thu, 11 Sep 2008 00:08:15 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 08099-03-2; Thu, 11 Sep 2008 00:07:16 +0200 (CEST) Original-Received: from ronja.vet.uu.nl (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id B70E21FE21; Thu, 11 Sep 2008 00:07:15 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by ronja.ntg.nl (Postfix) with ESMTP id 5DE6F1FE20 for ; Thu, 11 Sep 2008 00:07:09 +0200 (CEST) Original-Received: from ronja.ntg.nl ([127.0.0.1]) by localhost (smtp.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 08099-03 for ; Thu, 11 Sep 2008 00:06:30 +0200 (CEST) Original-Received: from mailout08.t-online.de (mailout08.t-online.de [194.25.134.20]) by ronja.ntg.nl (Postfix) with ESMTP id B6A621FE3F for ; Thu, 11 Sep 2008 00:06:29 +0200 (CEST) Original-Received: from fwd02.aul.t-online.de by mailout08.sul.t-online.de with smtp id 1KdXpV-0008DM-00; Thu, 11 Sep 2008 00:06:29 +0200 Original-Received: from [192.168.0.2] (GWRMF6Z-whYZIBheL6cfqKFIIo-CNHnh0gYx3b6En6VUQPDdfO+-rQAebKkfgC-ZYM@[87.178.78.1]) by fwd02.aul.t-online.de with esmtp id 1KdXpV-0zagAy0; Thu, 11 Sep 2008 00:06:29 +0200 X-Mailer: Apple Mail (2.926) X-ID: GWRMF6Z-whYZIBheL6cfqKFIIo-CNHnh0gYx3b6En6VUQPDdfO+-rQAebKkfgC-ZYM@t-dialin.net X-TOI-MSGID: c8c657a3-8d9b-4ec5-aa94-137c85c78305 X-Virus-Scanned: amavisd-new at ntg.nl X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.9 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl X-Virus-Scanned: amavisd-new at ntg.nl Xref: news.gmane.org gmane.comp.tex.context:43866 Archived-At: Hi guys, I'm pulling my hair out. I'm trying to set up an automatism to fit pictures to the available space on a slide. I need to consider three parameters: 1. If the user supplies a value for width= or height= , use this value (captured in a macro); 2. respect the maxwidth and maxheight which must not exceed the frame; 3. if the picture is smaller than the available space, blow it up so that it reaches the maxwidth or maxheight (but doesn't exceed either). factor=max or =fit does not work because it allows pictures to exceed one of the maximum values. About a year ago Giuseppe Bilotta wrote a message which I append; it describes my problem. Is there a generic solution for this problem? If there is, I'll gladly take it; if there isn't, I thought I had a solution but may need help with expanding and conditionals, then I'll be back with more questions. Anyway, good night all, and thanks. Thomas > Subject: Re: [NTG-context] factor=fit images don't fit > Sunday, July 22, 2007 Hans Hagen wrote: > > > the fit assumes operating on a page not in a box; > > Ah, didn't know that. I couldn't even tell from the sources, > since it uses enclosing box dimensions and not page or paper > sizes. I suspect the logic is broken at the page level too > though, let me explain why. > > Currently, if I understand the code correctly, factor=fit > expands the figure to have its major direction fit, while > factor=max expands the figure to have its minor direction > fit. > > Instead, the behavior I would expect from fit (resp. max) is > for the *expansion ratio* to be the minimum (resp. maximum) > of the expansion ratios in the two directions (not the sizes > in those directions, but the ratio between the sizes of the > figure and the container). The difference is noticeable when > the container and contained have different aspect ratios. > > Consider for example a 20x30mm figure in a 50x150mm page > (strange numbers, just used to show what I mean): with the > current code, using 'fit' would consider the largest > dimension (30) and thus calculate a factor of 150/30 = 5, > but this gives us an image which is 100x150mm, i.e. an image > that doesn't fit! Whereas, if we computed the ratios 50/20 = > 2.5 and 150/30 = 5, we would know that the ratio to be > picked was 2.5 in 'fit' and 5 in 'max'. > > Or I misintepreting the meaning of 'fit' and 'max'? > > > an alternative is: > > > \framed[width=5cm,height4cm] > > > > {\externalfigure[mill.png][maxwidth=4cm,maxheight=5cm,width=10cm]} > > > i.e. setting the maximum values > > I hadn't thought about using width and maxwidth (and > maxheight) at the same time, thanks. Of course, I'd rather > have 'fit' and 'max' usable in boxes :) ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : https://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________