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GSoC 2010 Cairo canvas
by Krzysztof Kosiński 28 Mar '10

28 Mar '10

Hello all I will limit myself to two possibilities of a GSoC project for this year: Cairo rendering and SP layer improvements. I think they have the biggest potential impact. This mail discusses the first one. In order to use Cairo rendering in Inkscape, we need a Cairo-based canvas widget to replace the current SPCanvas / NRArena. They appear to be originally derived from GnomeCanvas. Canvas widgets are a rather common beast in the FOSS world, so even if we decide none of the existing ones are satisfactory for us, we have a large body of work from which we can derive inspiration. This page has links to several existing canvas implementations. I have not analyzed all of them yet, but will keep you informed about any important http://live.gnome.org/ProjectRidley/CanvasOverview Here are some requirements for our canvas. 0. Based on Cairo. 1. Model/view split: objects displayed on the canvas can exist without it. 2. Widgetless rendering: it should be possible to render completely in memory, for example for console-mode PDF export. 3. No excessive ties to Inkscape - implemented as a library, perhaps using a few well-defined portions of the existing codebase (e.g. 2geom). 4. Canvas primitives should be sufficient to render SVG. There are many things to discuss, but here's the first one: Tiling reduces the area of the screen that needs to be redrawn, but increases the number of drawing operations. We could instead have a tile-less system that would compute the affected bounding box and redraw it in one go, instead of redrawing many tiles. What do you think? Regards, Krzysztof

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Node tool & hash maps
by Joshua A. Andler 26 Mar '10

26 Mar '10

I just ran across the following and figured I would pass the link on since it is a comparison of various hash map implementations and their performance. http://incise.org/hash-table-benchmarks.html Are we using unordered w/ integers? If so, we may want to explore other options. Oh, and someone in the notes also pointed out: https://edge.launchpad.net/libmct Cheers, Josh

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GSoC (Student Idea) - Graphical Script Extension Editor
by Andrew Simmons 26 Mar '10

26 Mar '10

Hello, I would like to make it easier for Inkscape users to create their own script extensions, especially effects (ie. scripts that operate on the current image). *Ideally* this would involve creating some kind of visual programming language to allow users to drag-and-drop high-level SVG editing commands with intuitive icons into a editor field to create their program - without having to write a single line of code. *Practically* there is no way I could code something so complex in the time-span. Thus I think I should focus on automating as much of the ScriptingHOWTO section as possible. This would (possibly) include: - A graphic tool to generate INX files? - Creating some useful python functions (eg. "addStar()") to allow users to create their script quickly? - An interactive function navigator? Would this be a viable summer of code project? I haven't used GTK+ before nor created an Inkscape extension (yet) Thanks, Andrew Simmons

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GSoC - transformation anchors - before apply
by Zhenfeng Zhao 26 Mar '10

26 Mar '10

Hello, I am interested in working on the "transformation-anchors" project in GSOC this year. I am a graduate student in Computer Science in Canada. I knew Inkscape would win GSOC projects this year, as usual. :-) Congrats. I hope it is not too late to say Hi here. Inkscape is one of my favorite open source software. I also have strong interests and work experiences in image processing, image editors. I have developed a vector-based graphics editor from scratch before. That graphics editor uses customized XML formats, have OOP architecture design to deal with all shapes/primitives with object classes, and allow SVG and DXF (Solidworks drawing file) import and export. Therefore, it seems Inkscape GSoC projects are most interesting and relevant to me. The project, transformation-anchors, seems interesting and doable to me. Wiki docs are very helpful. It is impressive that GUI mock-up has already been posted several months before the Gsoc actually starts. I will read and plan in further detail. I have similar work before, to have the default rotation center to be the geometric center of all shapes. Anchor coordinates are a part of the object (drawing) attributes. It can be adjusted, so that geometrical transformations, rotation, translation, scaling, and shearing, can be performed with the updated center. In this project, there will be some GUI modification, e.g. enable and disable buttons, display coordinates and values, take XY input from users, and allow undo and redo. Maybe some nice intuitive and simple designs will help on these. There may be some refactoring to do, but I am not sure. In this stage, I hope to understand more for this project. Please kindly share comments. I will draft a full proposal in about 10 days. Technically, this project seems doable to me. Besides that I am good in C++, which may be a basic requirement, I have done some work using the following. XML: I have used it for many projects, using C++, Python, C# and Java. Libraries used: .NET, DOM, JDOM, Minidom. SVG: I have written a SVG viewer before. GTK+: I have experience with it. It is the most complex GUI widgets that I have used. SVN: I used it at work before. Regards, Zhenfeng. On Wed, Mar 24, 2010 at 12:12 AM, < inkscape-devel-request(a)lists.sourceforge.net> wrote: > Send Inkscape-devel mailing list submissions to > inkscape-devel(a)lists.sourceforge.net > > To subscribe or unsubscribe via the World Wide Web, visit > https://lists.sourceforge.net/lists/listinfo/inkscape-devel > or, via email, send a message with subject or body 'help' to > inkscape-devel-request(a)lists.sourceforge.net > > You can reach the person managing the list at > inkscape-devel-owner(a)lists.sourceforge.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Inkscape-devel digest..." > > > Today's Topics: > > 1. Re: bzr question (Marcin Floryan) > 2. Re: bzr question (Ted Gould) > 3. Re: Inkscape-Aqua for Snow Leopard (~suv) > 4. Re: Inkscape-Aqua for Snow Leopard (Stuart Edwards) > 5. Re: Inkscape-Aqua for Snow Leopard (Stuart Edwards) > 6. Re: GSoC 2010 Cairo canvas (Krzysztof Kosi?ski) > 7. Re: GSoC 2010 Cairo canvas (Krzysztof Kosi?ski) > 8. Re: Hello everybody & GSoC Open Asset Import Library (Carl Worth) > > >

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What about to use translations.launchpad.net? May be useful...
by Aurélio A. Heckert 26 Mar '10

26 Mar '10

Hi all, What you think about to use the web based launchpad's l10n system? https://translations.launchpad.net/inkscape I think that will be really more ease to get collaboration from our users. Gwibber is using this system. Cool? Aurium -- Aurélio A. Heckert http://colivre.coop.br/Aurium GNU/Linux User #312507 http://counter.li.org - - - - - - - - - - - - - - - - - - - - - - - - - Ilustração Vetorial Livre: http://InkscapeBrasil.org Coop. de Tecnologias Livres: http://Colivre.coop.br - - - - - - - - - - - - - - - - - - - - - - - - - "Windows 7: a new era of restrictions." http://windows7sins.org Antes de imprimir esta mensagem reflita sobre a sua responsabilidade com a preservação do Meio Ambiente.

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KML import status
by Will Holcomb 25 Mar '10

25 Mar '10

I was looking through the GSoC possiblities and I'm particularly interested in the KML import project: https://blueprints.launchpad.net/inkscape/+spec/kml-svg-translation I see reference to a project proposal being developed, however the link is now dead: http://socghop.appspot.com/student_proposal/show/google/gsoc2009/piotrekk/t… Given that project is still open, I assume that the proposal didn't go forward for some reason. I was wondering if anyone had further information as to why. I've been thinking quite a bit about the hyperlocal movement and I've been trying to come up with a reasonable way for users to add more complex structures to maps than what is available in browser-based drawing programs. It seems like this is a strong possibility, is there still interest in developing this feature? -Will

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Re: [Inkscape-devel] Inkscape-devel Digest, Vol 46, Issue 37
by Zhenfeng Zhao 25 Mar '10

25 Mar '10

Hi Alexandre, > Message: 5 > Date: Wed, 24 Mar 2010 10:26:06 +0300 > > > > I am interested in working on the "transformation-anchors" project in > GSOC > > this year. > > Go bless you for that! Some hardcore XFig users get really hot about > this feature missing in Inkscape. > > It sounds great. Good to know it is important. I have developed a couple of graphics editors that focus on precision and flexibility at the same time. I can see knowing where the center can be moved to is important. > And... You traded GIMP for Inkscape this GSoC? :) > > Thank you for noticing. I can see your emails very often too in Gimp and Inkscape. > > SVN: I used it at work before. > > We rely on bazaar-ng these days, but it bears some resemblance to SVN, > so it shouldn't be a problem. > > Alexandre > > Bazaar-ng seems interesting. I assume that it would be better than SVN, which seems to be used previously. (?) Regards, Zhenfeng.

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experimental LPE
by Uwe Schöler - OSS-Marketplace.com 24 Mar '10

24 Mar '10

Hi, in the last couple of testbuilds for windows are experimental LPE's enabled. On Ubuntu there are only a few effects available, but on windows builds are a lot of effects. And many of them let inkscape crash. Why do we have these unstable effects still enabled? Sincerely UweSch -- Mit freundlichem Gruß, Uwe Schöler

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bzr question
by Wolf Drechsel 24 Mar '10

24 Mar '10

Hi everybody, I tried to update my bzr inkscape sources directory to the most recent state, using sudo bzr pull in the sources directory. What I get is > Format <RepositoryFormatKnit4> for file:///Users/bub/Desktop/ > inkscape/bzr-inkscape-0.47-src/.bzr/ is deprecated - please use > 'bzr upgrade' to get better performance What shall I do? Yours, Wolf

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Inkscape-Aqua for Snow Leopard
by Stuart Edwards 24 Mar '10

24 Mar '10

There is now a pre-packaged version of Inkscape running native on my MacPro under OS X 10.6.2. That's the good news. The bad news is that there's some more work needed to make it useable. On start up I get the following console messages: 3/23/10 8:51:51 AM defaults[41485] The domain/default pair of (kCFPreferencesAnyApplication, AppleAquaColorVariant) does not exist 3/23/10 8:51:51 AM defaults[41487] The domain/default pair of (kCFPreferencesAnyApplication, AppleHighlightColor) does not exist 3/23/10 8:51:51 AM defaults[41496] The domain/default pair of (.GlobalPreferences, AppleCollationOrder) does not exist 3/23/10 8:51:51 AM [0x0-0x606606].org.inkscape.Inkscape[41457] Warning: AppleCollationOrder setting not found, using AppleLocale. 3/23/10 8:51:51 AM [0x0-0x606606].org.inkscape.Inkscape[41457] Setting Language: .UTF-8 3/23/10 8:51:51 AM [0x0-0x606606].org.inkscape.Inkscape[41457] cp: /Users/stu/inkscape_port/inkscape-0.47/packaging/macosx/stInkscape-aqua.app/Contents/Resources/etc/pango/pangox.aliases: No such file or directory 3/23/10 8:51:51 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (process:41460): Gtk-WARNING **: Locale not supported by C library. 3/23/10 8:51:51 AM [0x0-0x606606].org.inkscape.Inkscape[41457] Using the fallback 'C' locale. 3/23/10 8:51:54 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (inkscape-bin:41460): GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed 3/23/10 8:51:58 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (inkscape-bin:41460): GLib-GObject-CRITICAL **: g_object_ref: assertion `object->ref_count > 0' failed 3/23/10 8:51:58 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (inkscape-bin:41460): Gtk-WARNING **: Could not find the icon 'object-visible'. The 'hicolor' theme 3/23/10 8:51:58 AM [0x0-0x606606].org.inkscape.Inkscape[41457] was not found either, perhaps you need to install it. 3/23/10 8:51:58 AM [0x0-0x606606].org.inkscape.Inkscape[41457] You can get a copy from: 3/23/10 8:51:58 AM [0x0-0x606606].org.inkscape.Inkscape[41457] http://icon-theme.freedesktop.org/releases These don't seem to impede the start up process but are mentioned in case they affect something else later. Based on a quick 'tour', the basic functionality of the drawing tools etc seems to be in place. Of course, the two problems discussed in previous threads are still with us - the lack of radio buttons and the non appearance of aqua drop down menu items that have secondary menus associated with them. Another fairly critical item - saving the current document to file - causes a crash at the point where the 'save' button on the file dialog box is activated. This creates a series of console messages: 3/23/10 8:54:15 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (inkscape-bin:41460): Gtk-WARNING **: Unable to find default local directory monitor type 3/23/10 8:54:35 AM [0x0-0x606606].org.inkscape.Inkscape[41457] (inkscape-bin:41460): Gtk-WARNING **: Unable to find default local directory monitor type 3/23/10 8:54:35 AM [0x0-0x606606].org.inkscape.Inkscape[41457] Emergency save activated! 3/23/10 8:54:35 AM [0x0-0x606606].org.inkscape.Inkscape[41457] Emergency save completed. Inkscape will close now. 3/23/10 8:54:35 AM [0x0-0x606606].org.inkscape.Inkscape[41457] If you can reproduce this crash, please file a bug at www.inkscape.org 3/23/10 8:54:35 AM [0x0-0x606606].org.inkscape.Inkscape[41457] with a detailed description of the steps leading to the crash, so we can fix it. 3/23/10 8:54:45 AM ReportCrash[41535] Saved crash report for inkscape-bin[41460] version ??? (???) to /Users/stu/Library/Logs/DiagnosticReports/inkscape-bin_2010-03-23-085445_SEsMacPro.crash 3/23/10 8:54:46 AM system_profiler[41538] could not convert interface name If these three items can be fixed, the application would be very useable. Any ideas would be much appreciated. If anyone would like a copy - let me know and we'll figure out how to transfer it - Stu

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