April 2013 - Inkscape Devel - Inkscape Mailman

Reports with patches pending code review (two-patch-rule / GSoC 2013)
by ~suv 29 May '13

29 May '13

Reports with patches pending code review (two-patch-rule / GSoC 2013) Status 2013-04-30 19:00 +0100: ============================== - Bug #181493: Locked layers not completely locked https://bugs.launchpad.net/inkscape/+bug/181493 - Bug #388684: auto-name duplicate objects https://bugs.launchpad.net/inkscape/+bug/388684 (no patch yet) - Bug #525508: Rotation step 22.5 https://bugs.launchpad.net/inkscape/+bug/525508 (committed) - Bug #830663: default window size too small https://bugs.launchpad.net/inkscape/+bug/830663 - Bug #448728: default preferences window size too small https://bugs.launchpad.net/inkscape/+bug/448728 - Bug #587729: Missing tweak tool cursor symbols https://bugs.launchpad.net/inkscape/+bug/587729 - Bug #180912: Dropper tool overrides keyboard shortcut https://bugs.launchpad.net/inkscape/+bug/180912 - Bug #773288: Document Properties > Page Border https://bugs.launchpad.net/inkscape/+bug/773288 (committed) - Bug #448872: Update selection based on bounding box https://bugs.launchpad.net/inkscape/+bug/448872 (merge proposal) - Bug #669748: Add a command-line switch to specify EPS Export level https://bugs.launchpad.net/inkscape/+bug/669748 - Bug #1173776: (E)PS export crashes when running from command-line https://bugs.launchpad.net/inkscape/+bug/1173776 (merge proposal) - updates the incredibly old Doxyfile file to use newer config values https://code.launchpad.net/~vinipsmaker/inkscape/doxygen - Bug #503712: Personal default template not used https://bugs.launchpad.net/inkscape/+bug/503712 (committed) - Bug #1023797: Scrollbars in Swatches dialog https://bugs.launchpad.net/inkscape/+bug/1023797 (committed) - Bug #257223: 'Object to path' for connectors https://bugs.launchpad.net/inkscape/+bug/257223 - Bug #629081: Spiro and path operations fails https://bugs.launchpad.net/inkscape/+bug/629081 Help for the bug team with getting code-related questions answered, patches reviewed, tested and committed in a timely manner would be appreciated.

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Another GSoC'er - New From Template
by Jan Darowski 07 May '13

07 May '13

Hi! I'm Jan Darowski, form Poland, studying IT at the Warsaw University. Launchpad, IRC nick Slagvi. As for now I've developed few apps (mainly with Qt), but couldn't find a nice way to get into open source development (although I use it all the time). And here appears GSoC. I chose Inkscape because I often see many cool, free projects, which have even better functionality than commercial ones but for some reason they aren't as popular. I think that it's caused by less friendly, simple interface. I'm attending an Inkscape Internet course on my university and find it really nice and interesting project, which in many places can be improved. Later on I saw, that there's a very strong, active community what I find very important. I chose to implement an old New From Template idea, as it looks like something improving reception of inkscape (especially for the new and very advanced users). It is also a well documented and described idea, so I believe that not only I find it important. Of course I already did required two patches, trying to choose these related with the subject. I already have some ideas/plans how to implement this idea but first I want to know if there aren't any more suggestions from the other developers. And here are the the questions for you guys: 1. Is it still as important idea as I think? Maybe there is something more urgent what you can suggest to me? 2. As the ideas blueprint suggests ( https://blueprints.launchpad.net/inkscape/+spec/new-from-3. template-dialog) there has been some work done about this idea but I cannot find anything about what has been done and where it is. 3. Is there any support for the procedural templates written? That's another mentioned functionality I cannot find. Is it so important? Without very deep research in this direction I think It can require a lot of work to do it from the beginning. Maybe even to much as for the GSoC, as there are also other things to be done during this period. As for now, I'm thinking about focusing on making a simple dialog, which covers current functionality + searching by tags + categorizing templates (things from wiki http://wiki.inkscape.org/wiki/index.php/NewFromTemplateSpec). As there will be a nice "New From Template" dialog, maybe I should also add one for creating templates? It shouldn't be very difficult, just another type of save dialog, with some additional template-specific fields and adding them into svg file.

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GSoC project proposal: Inkscape as an electronics CAD tool
by Sebastian Götte 03 May '13

03 May '13

Hi, I'm Sebatian from Berlin. I have used Inkscape for a few years now and I have a project proposal on how to make Inkscape a full-blown electronics CAD tool with only few special-purpose additions. I have written some software before[1,2,3] and contributed to other open-source projects[4,5]. I have registered a blueprint with my proposal at [6]. The spec can be found in the wiki at [7]. Here is the overview from the blueprint: Currently there is no nice open source electronics CAD tool. The largest competitors are gEDA which I find awkward to use and KiCad which I find even more awkward to use. Since a schematics editor is not much more than a special-purpose flow graph editor and a PCB layout editor is in fact nothing but a somewhat crippled vector graphics editor with some special-purpose features added I think it is very promising to modify a general purpose vector graphics editor to support the few special-purpose functions additionally required by an electronics CAD tool. Your comments are welcome :D Sebastian [1] https://github.com/jaseg [2] https://github.com/jaseg/cerebrum [3] https://github.com/jaseg/python-lmap [4] https://github.com/git/git/commit/d5fec92a7af5c42217f3d1c707191791230bdefc [5] https://github.com/jaseg/i3lock/commits/master [6] https://blueprints.launchpad.net/inkscape/+spec/electronics-cad [7] http://wiki.inkscape.org/wiki/index.php/SpecElectronicsCAD

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GSoC 2013: Depixelizing Pixel Art
by Vinícius dos Santos Oliveira 02 May '13

02 May '13

Hi Inkscape Developers, I'm Vinícius dos Santos Oliveira and I'm majoring in computer science at Universidade Federal de Alagoas, Brazil. I'm not very skilled, but I use (and like) the Inkscape software for some time ( http://vinipsmaker.deviantart.com/gallery/?catpath=/ ). I have experience with GUI programming and C/C++/Python/..., so I think I can develop to Inkscape. I'll try to fix some "easy-fix" tagged bugs next week. I thought about an idea for a GSoC proposal and I wanna know your opinion about this idea. Inkscape currently use potrace for all raster-to-vector conversions, but potrace isn't good to work with pixel-art. Some reasearchers developed an algorithm that perform better with pixel-art: http://research.microsoft.com/en-us/um/people/kopf/pixelart/ My proposal would be to develop an C++ library implementing this algorithm and: 1. Create an cli program using this library 2. Integrate the feature in Inkscape using this library The main tasks to implement this algorithm are: - Construct a graph - Reshape the graph with the help of some heuristics defined in the paper - Extract the spline curves - Optimize the curve - Convert the B-Splines curves to Bézier curves The library should export the curve as B-Splines and Bézier curves. This way, if Inkscape gain support for B-Splines curves in the future, it should be easy to convert the filter to generate the B-Splines instead of Bézier curves. After finish the proposal, Inkscape should have another option to convert raster images. I'm already used to a lot of programming languages and programming paradigms and programming skills won't be a problem for me. Graphs wouldn't be a problem for me either (I have some background on data structures and related). I would take more time to master B-Splines and Bézier curves, but I don't think this should take more than two weeks. If I finished this proposal fast enough, I could even add extra features like add an option to pre-proccess the input with hqx filter before send it to the cited algorithm. You can see some demos of the algorithm at http://research.microsoft.com/en-us/um/people/kopf/pixelart/supplementary/i… and the results are amazing. -- Vinícius dos Santos Oliveira https://about.me/vinipsmaker

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GSoC 2013 - Friendly attribution hint in the statusbar when copying/importing
by Christoffer Holmstedt 02 May '13

02 May '13

https://blueprints.launchpad.net/inkscape/+spec/friendly-attribution-hint-w… So as suggested by Ted in a previous mailing conversation I've now created a first draft of my proposal. Please comment on it. I thought about pop-ups, but when I copy something between documents or imports something I don't want to be interrupted with an annoying pop-up therefore I've resorted to the statusbar. It's currently not showing anything specific when importing a SVG file nor pasting from the "clipboard". -- Christoffer Holmstedt

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GSoC 2013 Project Idea | Mayank Dehgal
by Mayank Dehgal 01 May '13

01 May '13

Hello! I am Mayank Dehgal, a student from IIT Bombay, India, currently a second year undergraduate in the Computer Science department. I am interested in working with Inkscape for GSoC. I have used Inkscape to present the designs of 2D games and animations I have created. I have been thinking for long about using the generated svg file for creating a 2D game engine, or for animating certain rigid bodies. Since the svg file is an xml file, we just store the information of different structures in the file. I have been using Box2D ( 2D physics engine) lately, and we just declare different bodies with their positions, gravity, density, shape, so that the physics engine uses the information and runs the simulation. I plan on adding various properties to the svg file through additions in the User Interface, and then using it with Box2D to create simulations and 2D games. Please give me feedback and suggestions regarding this idea. Thank you.

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DBus api signals
by cabieces julien 30 Apr '13

30 Apr '13

Hi, I have to produce a "plugin" for Inkscape. Python extension functionnalities are not enough for what I want to do so I came to try the DBus Api. With this one, I can communicate from my plugin to Inkscape but not in the other way. The only implemented signal is "ObjectMoved" but I need to know when Inkscape modifies a node, adds an attribute or things like that. I look after the dbus extension code and it seems that the signals that I want are described in proposed-interface.xml and are not yet implemented. Is there any way to achieve what I want to do? Is there further development forecast for dbus extension? Is this possible to propose eventually patch? Thanks for the reply

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Rack gear extension
by braingram 30 Apr '13

30 Apr '13

I wrote up a quick rack (linear) gear extension yesterday. https://github.com/braingram/inkscape_rack_gear I would like to add this to the inkscape extensions repository (on the wiki) and ask for any feedback. Thanks!

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GSoC 2013: Unit Handling
by Matthew Petroff 29 Apr '13

29 Apr '13

Hello, My name is Matthew Petroff, and I am an undergraduate at Johns Hopkins University majoring in Physics and Computer Science. I've used Inkscape for about six years, and have also created SVG files by hand. I've been involved with FOSS for a few years now, namely Hugin [1] and, more recently, FontForge [2], mainly as a builder. For Google Summer of Code, I would like to improve unit handling in Inkscape. It is my understanding that Inkscape's current unit handling is scattered across the code base in various locations, and from personal experience, I know Inkscape's unit handling could use improvement. To start, I would refactor all of Inkscape's unit handling into one centralized location. I would then extend this unit handling to allow for easier use of "real" units, e.g. millimeters, both on the document wide level and for individual objects, as has already been outlined in a blueprint [3]. Thoughts? -Matthew Petroff [1] http://hugin.sourceforge.net/ [2] http://fontforge.org/ [3] http://wiki.inkscape.org/wiki/index.php/BlueprintRealUnit

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Re: [Inkscape-devel] C++ification of the SPObject tree
by Markus Engel 29 Apr '13

29 Apr '13

Hi there, I removed those c++11 parts now and went on with c++ifying the SPEventContexts. These were even easier to convert, I should have started with them. As far as I can tell, Inkscape did not get any slower and memory consumption even decreased a bit. At least that's what /usr/bin/time -v inkscape -z share/examples/car.svgz -e car.png says. Btw, I found a little mistake in the source code: src/widgets/sp-attribute-widget.cpp:262:15: warning: use of logical '&&' with constant operand [-Wconstant-logical-operand] if (flags && SP_OBJECT_MODIFIED_FLAG) ^ ~~~~~~~~~~~~~~~~~~~~~~~ src/widgets/sp-attribute-widget.cpp:262:15: note: use '&' for a bitwise operation if (flags && SP_OBJECT_MODIFIED_FLAG) ^~ & src/widgets/sp-attribute-widget.cpp:262:15: note: remove constant to silence this warning if (flags && SP_OBJECT_MODIFIED_FLAG) ~^~~~~~~~~~~~~~~~~~~~~~~~~~ Maybe one of you can correct that as I don't have write access. Markus

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