- Inkscape Devel - Inkscape Mailman

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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Perfect bound cover extension on Windows.
by john Culleton 01 May '13

01 May '13

When I installed Inkscape 48.4 on two different kinds of Linux and tried to use the: extensions-->render-->perfect-bound book cover template I got a message that I had to install an additional piece of software to use that function. This is no big deal to experienced linux users but might be for Windows users. So for the 0.48.4 version of Inkscape.exe, does this situation also exist with respect to the perfect-bound book cover feature? I have a Windows 7 partition up but haven't been able to convince it to talk to my router yet. And the handy-dandy router install disk is for an earlier version of Windows. (Sound familiar?) I can't just download the inkscape.exe via linux and move it over to the Windows partition. (Tried that trick too. Wouldn't execute.) So I can't test it myself. If anyone has tried the combination of recent inkscape, installed on Windows, and the perfect-bound cover feature I would appreciate hearing from them. -- John Culleton Wexford Press

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toxic SVG for dumpAsText() in Layout-TNG-Output.cpp
by mathog 01 May '13

01 May '13

While debugging I found that the dumpAsText() method is sensitive to some legal, but not very useful SVG constructs. Constructs Inkscape created for some reason or other. For instance, this: <text xml:space="preserve" style="font-size:16px;font-style:normal;font-variant:normal;font-weight:bold;font-stretch:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:FreeSans;-inkscape-font-specification:Sans Bold" x="929.79449" y="173.63014" id="text3112" sodipodi:linespacing="125%" transform="translate(0,377.35975)"><tspan sodipodi:role="line" id="tspan3114" x="929.79449" y="173.63014" /><tspan sodipodi:role="line" id="tspan3126" x="929.79449" y="193.63014" /></text> blows up in dumpAsText, if that is method is included in the code for debugging purposes. The problem is that for the empty spans the "input_stream_first_character" iterator on the empty spans cannot be dereferenced without a segfault, and that is exactly what happens here: snprintf(line, sizeof(line), " %d: '%c' 0x%4.4x x=%f flags=%03x glyph=%d\n", char_index, *iter_char, *iter_char, _characters[char_index].x, *u.uattr, _characters[char_index].in_glyph); Regards, David Mathog mathog@...1176... Manager, Sequence Analysis Facility, Biology Division, Caltech

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PCBmodE
by saar drimer 01 May '13

01 May '13

Hello everyone. I'm new to the list and wanted to introduce myself and talk about why I'm here. I developed a Python software for creating artistic and functional printed circuit boards. It's open source (Apache License) and based around JSON, SVG, and Gerber output (the latter for lack of any other more manageable alternative). I use Inkscape to draw the routing, and to move instantiated components around (everything else is created from information stored in JSON files). Before I continue, here's more info and some nice pictures: http://bitbucket.org/boldport/pcbmode http://boldport.blogspot.com My development mindset up to now was to not modify Inkscape or require plugins, and to use only what is strictly necessary, or what I cannot reasonably implement myself (auto-routing, complex SVG manipulation, etc.). This might need to change, as I'm realising that in order to make PCBmodE more useful to other people, it needs to be more tightly integrated with Inkscape. So I'm here to discuss the possibilities and hear your thoughts, advice, and criticisms. Here's more about me and my background: http://www.saardrimer.com http://uk.linkedin.com/in/saardrimer Thanks! saar.

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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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Build and hard link
by Martin Owens 01 May '13

01 May '13

Hey Devs, and more specifically Super Ted, I'm trying to come up with a script to process some of these merge requests more effectively. I've been keeping a trunk branch handy which is re-made each new pull so I have something up to date enough to work from and not have to wait for huge builds. So, I thinks to myself, maybe if I used bzr correctly and did a `bzr branch trunk bug174678 --hardlink`, ran the autogen and then hardlinked over all the .o files from trunk, I'd have a reasonable starting point. Turns out it's not that simple and make just wants to rebuild everything in the new branch anyway. I'm guessing it's checking some prerequisite's date stamp and I'm just not making sure it's touched. Script can be seen here: http://paste.ubuntu.com/5621102/ Any ideas? Best Regards, Martin Owens

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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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question about memory leaks
by insaner 27 Apr '13

27 Apr '13

i wrote up a patch ( https://bugs.launchpad.net/inkscape/+bug/1092374/comments/11 ) for https://bugs.launchpad.net/inkscape/+bug/1092374 but as you can see from the comment (hopefully not the patch itself) i dont have much experience with c++, gtk or inkscape programming, so i really want to avoid the potential of having created a memory leak with that. if someone could take a look and enlighten me a bit i would appreciate it. last thing i want is to be making inkscape a slow hog through my little fixes -- View this message in context: http://inkscape.13.x6.nabble.com/question-about-memory-leaks-tp4966734.html Sent from the Inkscape - Dev mailing list archive at Nabble.com.

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message for tavmjong
by insaner 27 Apr '13

27 Apr '13

hi tavmjong, i saw the awesome work you did on http://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/12104 so i thought you would be the guy to request a look at: https://bugs.launchpad.net/inkscape/+bug/168960 (and if possible, https://bugs.launchpad.net/inkscape/+bug/1064717 as well.. ) i included there a link to how gimp seems to do it.. but i just realized its not quite all there, so i looked up a little more info and found these as well: http://fossies.org/linux/misc/gimp-2.6.12.tar.gz/dox/fonts-commands_8c_sour… http://fossies.org/linux/misc/gimp-2.6.12.tar.gz/dox/gimp-fonts_8c_source.h… hope this is of some help. it would be a great feature to have for those of us who have fontforge open while working on a huge inkscape project that at times requires a refresh of the font list. thanks in advance -- View this message in context: http://inkscape.13.x6.nabble.com/message-for-tavmjong-tp4966720.html Sent from the Inkscape - Dev mailing list archive at Nabble.com.

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make dist fails
by Ryan Lerch 26 Apr '13

26 Apr '13

HI all, Sorry if this is a noob question, but i am trying to build the tarballs for inkscape from trunk, and am running into issues. When trying to run "make dist", I get the following errors: make dist-bzip2 dist-gzip dist-zip am__post_remove_distdir='@:' make[1]: Entering directory `/home/.../source/inkscape' make[1]: *** No rule to make target `mkinstalldirs', needed by `distdir'. Stop. make[1]: Leaving directory `/home/.../source/inkscape' make: *** [dist] Error 2 is there a "mkinstalldirs" target? cheers, ryanlerch

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Wiki account
by Sebastian Götte 26 Apr '13

26 Apr '13

Hi, could I get a wiki account? I want to explore options how to make it possible to use Inkscape as an electronics CAD program (schematics/circuit board design) and would like to write a blueprint about that. Regards, jaseg/Sebastian

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Layout compute question, Mark, nonspacing, Hebrew
by mathog 25 Apr '13

25 Apr '13

In one test case for Hebrew the word "Shalom" was split so that the first two characters were colored black, the second two green. This test cases uses the Hebrew vowels which are Mark nonspacing characters, other than the coloring, it looks like this: http://upload.wikimedia.org/wikipedia/commons/7/73/Shalom.png There are 2 such vowels on the first character position (furthest right), and one on the third character position. After this SVG is read in, when it is written out the 4th character (05dc) is eaten on the output. The debug method was enabled and it shows the problem (below), where for the first span all 4 of the UTF codes are present, but there are only 3 glyphs where there should be 4. The second span is as it should be. The layout code is migraine inducing, but perhaps one of you can suggest at least approximately where within it this glitch might be found? In particular, is there, by any chance, a calculation somewhere that assumes there is at most one Mark nonspacing glyph per spacing glyph? ==== span 0 in para 0 (direction=rtl) in source 0 (type=0, cookie=0xbacd900) in line 0 (baseline=51.748989, shape=0) in chunk 0 (x=347.181641, baselineshift=0.000000) font 'Ezra SIL SR' 40.000000 upright normalweight x_start = 197.656250, x_end = 143.437500 line height: ascent 42.929688, descent 16.152344 leading 0.000000 direction rtl, block-progression ttb ** characters: 0: '�' 0x05e9 x=0.000000 flags=15b4 glyph=0 1: '�' 0x05c1 x=0.000000 flags=000 glyph=0 <--- Mn 2: '�' 0x05b8 x=0.000000 flags=000 glyph=0 <--- Mn 3: '�' 0x05dc x=-27.968750 flags=414 glyph=2 ** glyphs: 0: 262 (175.546875,0.000000) rot=0.000000 cx=0.000000 char=0 1: 344 (169.687500,0.000000) rot=0.000000 cx=27.968750 char=0 <-- missing a glyph here 2: 287 (143.437500,0.000000) rot=0.000000 cx=26.250000 char=3 ==== span 1 in para 0 (direction=rtl) in source 1 (type=0, cookie=0xbacd970) in line 0 (baseline=51.748989, shape=0) in chunk 0 (x=347.181641, baselineshift=0.000000) font 'Ezra SIL SR' 40.000000 upright normalweight x_start = 143.437500, x_end = 103.515625 line height: ascent 42.929688, descent 16.152344 leading 0.000000 direction rtl, block-progression ttb ** characters: 4: '�' 0x05d5 x=0.000000 flags=414 glyph=3 5: '�' 0x05ba x=0.000000 flags=000 glyph=3 6: '�' 0x05dd x=-13.515625 flags=414 glyph=5 ** glyphs: 3: 263 (133.828125,0.000000) rot=0.000000 cx=0.000000 char=4 4: 280 (129.921875,0.000000) rot=0.000000 cx=13.515625 char=4 5: 288 (103.515625,0.000000) rot=0.000000 cx=26.406250 char=6 Thanks, David Mathog mathog@...1176... Manager, Sequence Analysis Facility, Biology Division, Caltech

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Inkscape 49 date/description.
by john Culleton 25 Apr '13

25 Apr '13

I hear mention of version 49, which is not out yet. Is there a ETA on this version? Is there a document that describes the new/changed features? -- John Culleton Wexford Press Free list of books for self-publishers: http://wexfordpress.net/shortlist.html PDF e-book: "Create Book Covers with Scribus" available at http://www.booklocker.com/books/4055.html

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Preferences::Observer and coding-style
by Vinícius dos Santos Oliveira 24 Apr '13

24 Apr '13

I'm preparing my first set of patches and fixed a bug, but I want to discuss some coding style. Inherit from Preferences::Observer is the only way to watch for preferences notification? You guys seem to use a mix of OO-patterns and sigc combination. What is the preferred? -- Vinícius dos Santos Oliveira https://about.me/vinipsmaker

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Bitfields in SPStyle
by Krzysztof Kosiński 23 Apr '13

23 Apr '13

Revision 12297 changed several bitfields in SPStyle to bool and unsigned int. This means that the size of every SPStyle object will increase by at least 16 bytes. What is the motivation for this change? Regards, Krzysztof Kosiński

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Symbols UI Changes
by Martin Owens 23 Apr '13

23 Apr '13

Hey devs, I'm going to be making two changes to the UI for symbols. 1. Firstly, we move the Symbol to Group and Group to Symbol out of the Object menu where it's out-of-context and into the symbols UI itself. This means the 'Current Document' symbols will be visible when you add and remove symbols. (I'll also be fixing it so the Symbol to Group works on the symbol selection and not just a use element) 2. The second piece is to move the two preferences out of the symbols UI and into the Inkscape preferences. Edit > Preferences > Interface > Symbols. I'm interested in ideas where best to place these in the existing tree. Diagram: http://imagebin.org/254989 Please do let me know if you see any problems with the plan. Best Regards, Martin Owens

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Paste attributes
by Martin Owens 21 Apr '13

21 Apr '13

Hey devs, I've been tracking this bug: https://bugs.launchpad.net/inkscape/+bug/1107924 Dragging symbols to the document 'pastes' them in. The 'use' element created points to the symbol definition. But it also adds width="1" height="1" to the element which is erronious. sp-use.cpp sets width and height to 100% (1.0 + SVGLength::PERCENT) and I thought that might be the culprit, but it's not effecting these use elements. So I traced the copy process, outputting the xml at each step through the copy process. The use element created and passed around never has a width and height attribute and setting one gets overridden. So I'm at a loss, the element from the paste process acquires attributes by some magic I can't yet trace. Any help understanding what's going on would be great. Best Regards, Martin Owens

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Re: [Inkscape-devel] G_BEGIN_DECLS
by Markus Engel 19 Apr '13

19 Apr '13

The first answer here describes the use of extern "C" quite well: http://stackoverflow.com/questions/1041866/in-c-source-what-is-the-effect-of -extern-c It is used to prevent name mangling so you can link together e. g. c object files and c++ object files. I think in Inkscape it isn't necessary at all as the c++ compiler is used for all the compiling. Markus

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Preserving shapes better when deleting nodes
by Alexander Brock 19 Apr '13

19 Apr '13

Hi, I've been using Inkscape quite a while now for tracing cartoon-like images. The paths usually end up having way too many nodes which is a problem for the vinyl cutter I use to plot these images. I tried using the simplify path tool but it makes the path usually too simple and changes the overall appearance. Therefore I use the path tool (F2) to select unneeded nodes and delete them, but this leads to curves which poorly resemble the original curve, so I have to adjust the curve by hand which consumes a lot of time since I have to clone the path first so I can see the original shape and adjust the simplified curve to fit it better. I made some examples, see attachment demonstration.svgz. I also formulated a target function for minimizing the distance between two curves and calculated the partial derivatives of this function. I'm pretty confident I will be able to use a gradient based method for finding the two control points which lead to minimal distance between the original curve and the new one. Thoughts? Sincerely Yours Alexander

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G_BEGIN_DECLS
by Arshdeep Singh 19 Apr '13

19 Apr '13

I was studying the code structure in ' gimpcolorwheel.h ' . I see 'G_BEGIN_DECLS' which is a miscellaneous macro : https://developer.gnome.org/glib/2.33/glib-Miscellaneous-Macros.html#G-BEGI… Is it used only for the files that are C based and compiled using a C++ compiler ? What is its relevance with the given file ? Thankyou for the help. -- Arshdeep Singh Third Year, Computer Engineering Delhi Technological University Ph: +91-9654115614 https://sites.google.com/site/adsingh1729/home

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Re: [Inkscape-devel] GSoC13: Text Tool Improvements
by Valerie 18 Apr '13

18 Apr '13

As far as the text-tool drop-down is concerned, I totally think it should steal the interface Krita uses to manage paint modes. Mock-up: http://i49.tinypic.com/eq1fep.png Fonts would be stored in categories, and within categories, you can check a box to make the font appear in the "favourites" category on top. Uncheck to make it disappear again. This could solve pre-rendering issues: fonts will only render once you open a category. I'm not a font expert so I don't know how they should be categorized though. I'm aware that Inkscape doesn't have that widget, but it totally should, especially for managing the fonts drop-down. It's really handy for managing the dozens of modes in Krita, I just have 5~6 favourites and I can ignore the rest, but still access them easily on the rare occasions when I need them. ------------------------------ Message: 3 Date: Thu, 18 Apr 2013 13:10:58 +0200 From: Stojan Dimitrovski <sdimitrovski@...400...> Subject: [Inkscape-devel] GSoC13: Text Tool Improvements To: inkscape-devel(a)lists.sourceforge.net Message-ID: <CALTcmgnhPXwOv+9tFNO3A+7G7nK7sYOw2V1u1euT2LMhCuVtvA@...401...> Content-Type: text/plain; charset="utf-8" Hello everyone, I'm Stojan Dimitrovski, a sophomore from Macedonia. I'm currently studying Computer Science at Ss. Cyril and Methodius University in Skopje. I am considering applying for Inkscape on GSoC13. I have a few ideas on improving the current text tool, particularly its user interface and some of its underlying features and implementation. Here are some of those ideas: - Typefaces' names should be rendered in the glyphs they describe if such exist. Example: Helvetica should be rendered in Helvetica, Garamond in Garamond, etc. Icon typefaces are rendered by the fallback GUI typeface on the system. - There should be a live preview / comparison of typefaces interface which will allow for a better and faster typeface selection. Inspired by typeface pickers like the one in TypeKit or similar. - There should be a character-preview of a typeface, which will show all of the glyphs in a typeface that are defined for it (and make it easy for those glyphs to be inserted into text). This is primarily useful when using icon typefaces (like Font Awesome from Twitter Bootstrap fame). - Improved handling of different variants, weights, styles of typefaces. (Current implementation is a bit flaky handling this.) - Implement a system for SVG font typesetting (actually be able to use the SVG fonts to render text inside Inkscape). - Improve the SVG font interfaces, they really need some love. I'd like to hear your suggestions and comments before I embark on doing mockups of the interface and thinking about the implementation. I should also mention that I'm fluent in the technologies that Inkscape uses, especially in GTK+ (2, 3), GObject, GLib, C / C++. I have general knowledge of the SVG standard. I've been using Inkscape since version 0.45 and have an understanding of its features and workflow. The free-software movement, communities and development philosophies are not new to me. Regards, Stojan Dimitrovski

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Questions about Share / Icons
by Martin Owens 18 Apr '13

18 Apr '13

I'm looking at the icons in the inkscape trunk branch and have a few questions: 1. Do we need png and svg versions of the same icons? Don't all target OSes support svg now via gtk? 2. Is pango_icons.svg used at all? I can't see a reference to it in the code. Even though the icons in the file are nicer than those in inkscape IMO. Are these transitional? 3. Where is the swatch/color picker icon currently used for the the symbols icon. I wanted to change the symbols dialog icon. Make something better, but can't find it in the icons.svg or any of the other files. 4. The filter effects icons, are these temporary placeholders? is anyone working on better replacements? 5. OCAL doesn't seem like an icon, is it here because there's no other place for it? Best Regards, Martin Owens

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