December 2009 - Inkscape Devel

Issue with inkscape on FreeBSD
by Guy Brand 02 Jan '10

02 Jan '10

Hi list, I'm having a serious issue with inkscape on FreeBSD -current. I'm using the port available for FreeBSD and even a forced reinstall of it doesn't fix the problem. The maintainer of the port suggested to report the problem through this list. The issue is quite simple to express: adding a layer to any opened file freezes inkscape. I can open any svg file without a trouble, and a file can contain layers, they are perfectly displayed. I can also hide any of the layers of a document, or rename a layer, change the order of layers, without problem. Only creating a new layer (or duplicating the current layer) is impossible, and leads to a freeze. Tracing the process (using truss on FreeBSD) doesn't show anything once the process is frozen. If there is anything else I could do please let me know. Does such an issue speak to anyone here? Merry Christmas all gb

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Passing data with sp_action_perform(SPAction *action, void * data)?
by Alex Leone 31 Dec '09

31 Dec '09

Hello, I'm attempting to write a patch that adds a margin when setting page size through the "Fit page to selection" button in document properties. I've already added the ui elements (RegisteredScalarUnit's) for marginTop, marginLeft, etc, but I can't figure out how to get the values to the function that resizes the page. Here's how the page currently gets resized: 1. When clicked, "Fit page to selection" fires src/ui/widget/page-sizer.cpp:487: PageSizer::fire_fit_canvas_to_selection_or_drawing() { Verb *verb = Verb::get( SP_VERB_FIT_CANVAS_TO_SELECTION_OR_DRAWING ); SPAction *action = verb->get_action(dt); sp_action_perform(action, NULL); } 2. sp_action_perform eventually calls src/verbs.cpp:2149: FitCanvasVerb::perform(SPAction *action, void *data, void */*pdata*/) { fit_canvas_to_selection_or_drawing(dt); } where the void *pdata parameter is the second argument from sp_action_perform. 3. This eventually calls src/document.cpp:601: SPDocument::fitToRect(Geom::Rect const &rect) My plan was to add marginTop, marginLeft, etc as parameters to SPDocument::fitToRect, and somehow pass these parameters through the void *data parameter in sp_action_perform. However, all the other calls to sp_action_perform in inkscape set the void *data parameter to NULL, and it looks like the action handler doesn't have any code to call free on the parameter after all the action listeners are serviced. Am I trying to do this completely wrong? Thanks, - Alex (Attached is a patch that adds the margin UI elements in document properties)

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Re : Exchange position of two objects
by Arcadie Cracan 31 Dec '09

31 Dec '09

---------- Forwarded message ---------- From: Arcadie Cracan <acracan@...400...> Date: Dec 31, 2009 11:36 AM Subject: Re: [Inkscape-devel] Re : Exchange position of two objects To: Krzysztof Kosiński <tweenk.pl@...400...> Actually the center might be the center of mass ( http://en.wikipedia.org/wiki/Center_of_mass), and, as Krzysztof said, a sort around this center is the way to go. But there is a better approach than using atan2 function. It is described in the Chapter 33 - Computational Geometry in Introduction to algorithms by T. Cormen. It does compare 2 vectors' angle by computing their cross product. As I can see, the angle_sort() function already exists in 2geom (see convex-cover.cpp and convex-cover.h) and it seems that it used to use the atan2() function for angle comparison, but now computes some kind of matrix determinants (that lead to vector slopes I guess). The use of cross products avoids the division operation, so it is faster. On 12/31/09, Krzysztof Kosiński <tweenk.pl@...400...> wrote: > > 2009/12/30 bulia byak <buliabyak@...400...>: > > But a still better and more useful approach is to dedect a clockwise > > order, as I wrote before. This may not be always easy, but it's an > > interesting mathematical challenge. For example: calculate a center > > point of objects and rotate clockwise a ray from this center, and > > process objects in the order in which this ray crosses their bbox > > centers. > > This is actually rather simple. Compute the center (this may require > learning some not-perfectly-clear API); for each object calculate the > vector from the center to that object's center (let's call it relpos) > and sort on Geom::atan2(relpos), for example by inserting the SPItem*s > into a std::map<double, SPItem*> and then iterating over it. I'm not > sure whether it will produce a clockwise or a counterclockwise > ordering, because I never remember which one (desktop / document) is > the mathematical one :) > > Regards, Krzysztof > > > ------------------------------------------------------------------------------ > This SF.Net email is sponsored by the Verizon Developer Community > Take advantage of Verizon's best-in-class app development support > A streamlined, 14 day to market process makes app distribution fast and > easy > Join now and get one step closer to millions of Verizon customers > http://p.sf.net/sfu/verizon-dev2dev > _______________________________________________ > Inkscape-devel mailing list > Inkscape-devel(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/inkscape-devel >

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Fwd: [Inkscape Brasil] SK1 também já manipula dados no "device-cmyk"
by Felipe Sanches 31 Dec '09

31 Dec '09

hey, Jon, here is a translation to english of an email message that one guy sent a few moments ago to the brazilian inkscape-users mailing list. I'm afraid we've got a wave of misunderstanding here... I'm going to travel now to countryside (I'll be offline and I'll be back to the internet on january 4th) Felipe "Juca" Sanches ---------- Forwarded message ---------- From: Jonatã Bolzan <jbopen@...400...> Date: 2009/12/30 Subject: [Inkscape Brasil] SK1 também já manipula dados no "device-cmyk" To: Comunidade Inkscape Brasil <inkscape-brasil@...2207...> Olá pessoal Há alguns dias conversei com o Igor, responsável pelo desenvolvimento do sK1, e ele disse que seria possível o sK1 usar também os dados "device-cmyk". Hoje recebi a confirmação, vejam o chat: [translation:] Some days ago I chatted with Igor, the guy responsible for developing sK1, and he told me that it would be possible to make sk1 use data from "device-cmyk". Today I have received a confirmation, check our recent chat: Igor: According to your request we have implemented device-cmyk in sK1 me: hi there Oh, great to know! can I say that in Inkscape-brasil mailing list? Igor: yes of course the code in SVN me: thanks! Igor: device-cmyk is implemented as for SVG importer and for SVG exporter Então, os arquivos SVG gerados no Inkscape que possuem dados do "device-cmyk" serão abertos no sK1 respeitando tais valores. Apenas não sei dizer que o sK1 exporta PDF em CMYK, mas se sim, os arquivos gerados no Inkscape poderão ser abertos no sK1 e exportados em PDF com cores CMYK. Alguém disposto a testar? :D Obrigado, até mais... [translation:] So, SVG files created in Inkscape that have data stored in "device-cmyk" will be properly opened in sK1 respecting those values. I just dont know whether sK1 exports PDF files in CMYK, but if that's the case, it will be possible to open in sK1 the files created in Inkscape and export them as PDF with colors information in CMYK. Anyone willing to test it? :D Thanks, bye... ____________________________________________________ Lista de Discussão Inkscape-Brasil O Site da Comunidade: http://inkscapeBrasil.org Sobre a Lista de Discussão: http://inkscapeBrasil.org/Comunidade#ListaDeDiscussao Quer Scribus? http://wiki.softwarelivre.org/Scribus/Comunidade#ListaDeDiscussao Quer GIMP? http://listas.softwarelivre.org/cgi-bin/mailman/listinfo/gimp-br

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I've messed the lp:inkscape branch
by Arcadie M. Cracan 30 Dec '09

30 Dec '09

Hello, I don't really know how I've managed to do this (bzr still seems a bit complicated to me) but I think the current revision is an outdated one. Please revert my today (Dec 27) commits. Thank you, Arcadie Cracan

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Video markup
by Александр Горбань 29 Dec '09

29 Dec '09

Hi, I'm thinking about creating tool to markup video (select areas containing objects, add tags) for my computer vision algorithms (head tracking, human detection and the like). The core functions of such tool: split video into separate frames, possibility to markup some object by drawing rectangles, circles or other closed contours objects on each frame, play markuped video, interpolate unmarked object coordinates between frames. It is seemed to me, that within inkscape it can be done in the following way: 1. Input extension that "convert" video frames into inkscape layers 2. Toolbar with play/stop buttons that toggle layer visibility to simulate video playback if you catch the idea, can you tell how difficult to implement the tool on inkscape basis? If it isn't very hard task what is the best way to do it: creating extension or creating patch? --- Best regards, Alexander Gorban

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broken build again
by Alexandre Prokoudine 29 Dec '09

29 Dec '09

Hi, BZR doesn't build again (revision 8907): http://pastebin.com/mea17326 This is on Ubuntu 9.10. Alexandre

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Wiki font
by Krzysztof Kosiński 29 Dec '09

29 Dec '09

Can someone change the Wiki font from 12px to at least 14px, and adjust other font sizes accordingly? The current size is really hard to read. I put this in Firebug, and it is much easier on the eyes: div.content { font-size: 14px; line-height: 1.3em; } pre { ... font-size: 12px; line-height: 1.2em; } And the title of the page should be displayed below the flag bar, in place of the big "Contents" heading. That would be enough to use the wiki comfortably. Regards, Krzysztof

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Re: [Inkscape-devel] Specification: Improved image properties dialog (0.48)
by Krzysztof Kosiński 28 Dec '09

28 Dec '09

W dniu 23 października 2009 17:18 użytkownik Jon A. Cruz <jon@...18...> napisał: > You are thinking of *your* intuition. There is roughly half the user > population who's intuition is the *opposite* of yours. You say that 50% of people prefer linking and 50% prefer embedding. I am certain this is not true. Most people expect the image to stay in place. When you send an email attachment, it is not a magical link to the data on your computer. When you paste an image into a Word / ODT file, it is not a link to that file on your hard disk. When you paste SVG elements from another document, they do not magically become a link to that second document. > However... I don't think the "Therefore" actually quite matches. Among other > issues, a drag-n-drop is actually a complex paste operation. So I think the > code is doing a few things you don't expect. Drag and drop is currently not related to pasting, because drag and drop is implemented in src/interface.cpp, and pasting in src/ui/clipboard.cpp. They don't use the same code path. In fact the import code is simpler, because imported / dragged items are put into a group. Not sure if that's what you meant. > Also for the import case, embedding will break things for many, many users. > We've looked at that a few times. For who, and in what cases? You sometimes say that a proposed solution will cause 'important issues for many users', but don't say what those issues actually are. > The good solution is to create a "media manager" that handles things like > images, linked css files, ICC profile files, etc. This would be great to have, along with UI improvements to enable using common styles. The image links manager proposed in this thread is a good start, and could be extended to Still, I think this is orthogonal to what the defaults are. > Things can then be worked > out with the UI and perhaps a "Publish" menu/command that does things a bit > more explicitly than "save as" or "export". I think that "Publish" is a stupidity cloned from Corel Draw. Why should saving a PDF be completely different from saving any other file? Moreover the name is misleading: you are actually not 'publishing' anything in the sense of showing it to the outside world. You are only saving a file. A better name is "save standalone document" or something like this, but I don't see a difference between this and Export. Regards, Krzysztof

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bzr - keeping the log linear
by Terry Brown 28 Dec '09

28 Dec '09

After the recent months worth of various people's commits becoming sub-revisions of one person's commits, I chatted on #bzr to see if there was a way to avoid this. Incidentally, the branch based workflow shown on the wiki will *cause* this problem, so I'll revise what's written there. Anyway, there is a bzr configuration flag which will prevent changes (other than extensions) to the log, i.e. it would refuse to accept the push which sidelines other people's commits. According to the #bzr people, this would set the flag on lp:inkscape python -c 'import bzrlib.branch as b; b.Branch.open("bzr+ssh://bazaar.launchpad.net/path/to/branch").set_append_revisions_only(True)' (if the user has the required permissions) They also pointed out the current sidelining could be undone, I might see that's involved, but not really sure if it's worth it, seeing there's no real damage. Cheers -Terry

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