May 2016 - Inkscape Devel - Inkscape Mailman

win32 build working again
by Bob Jamison 08 Apr '24

08 Apr '24

The win32 build, which was broken for the weekend, is working again. I just made a "manual autobuild" again, so that we can see how it looks on Windows: http://troi.titan-aeu.com/~rjamison/inkscape/builds/ Bob

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Inkscape for embroidery
by Michael Soegtrop 26 Nov '16

26 Nov '16

Dear Inkscape Developers, I added a few features to Inkscape for use in embroidery, because the commercial tools available don't offer the artistic flexibility I want. I would like to have your opinion on if you think it makes sense to integrate such functionality into the Inkscape mainline, or if it would be too much of a stretch. It boils down to some LPEs and an export format. The commercial tool I have from Bernina (a Swiss sewing machine manufacturer) is based on Corel Draw. Below is a list of the additions I did / I am working on. Please let me know what you think about this. With these additions, Inkscape offers substantially more flexibility than affordable commercial SW (and affordable here means 500..1000$). Best regards, Michael 1.) Ways to fill an area with clusters of contours Inkscape already offers 2 path interpolation LPEs which allow this. I plan to add a 3rd one which creates a set of equidistant inset/outset paths. 2.) A way to connect sub path of a path into one continuous path I added an LPE to do this with various options of end interpolation. Maybe if I use bool-ops I need to extend it with some sort of sorting, cutting and auto reversing mechanism to keep the connections short. 3.) A way to cut a path into stitches (straight line segments) in a controlled way. I added an LPE to do this, but it is quite primitive as yet. 4.) Bool ops on paths because in embroidery you cannot simply hide an object below another one. I just added a bool-op LPE for this - needs some additional work to cut contours against a closed path. 5.) A tool to convert graphics output to some format an embroidery / sewing machines can read. I wrote an external tool to convert HPGL to a common embroidery format (stitch/DST), but could also integrate this into Inkscape. 6.) Maybe a tool to hide connections between path segments below filled areas. For a sewing machine it is quite complicated to do a "pen up" - it has to cut the threads, so one typically hides connection paths below some embroidery to avoid thread cutting. Currently I do this semi-manually. Doing this automatically might be quite complicated.

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Thanks for your votes! We have our new "Draw Freely" font!
by C R 02 Nov '16

02 Nov '16

And the winner (by quite a bit, actually) is Euphoria Script! Thanks to everyone for the votes and helping us choose a new open font. The new font will be deployed to the website and relevant graphics. You can start using it now in your inkscape-related materials by downloading it here: (includes font and ofl license files). http://www.opendesignstudio.org/inkscape/euphoria_script.zip Have fun, and thanks again for the help! -C

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performance problems and possible remedies?
by Yale Zhang 29 Sep '16

29 Sep '16

Hi. I'm using Inkscape to author a comic and the slow speed for certain things is very annoying. I'm already have OpenMP turned on and using 4 cores. 1. *large blurs are slow* - I'm an expert with writing SIMD code, so I was thinking about vectorizing the Gaussian IIR filter with SIMD intrinsics, even though it's harder than for a FIR. But I noticed there isn't any SIMD code in Inkscape so does that mean it's something to avoid. I'm pretty sure no current compiler is smart enough to vectorize it, and besides, Inkscape is compiled with -O2, meaning -ftree-vectorize isn't on by default. 2. *when there's a large image (raster based) background - scrolling in a zoomed region is very slow* I compiled the latest 0.49 code with GCC profiling and it shows this: 33.98 22.47 22.47 exp2l 21.29 36.55 14.08 log2l 17.57 48.17 11.62 pow 7.12 52.88 4.71 658 0.01 0.01 ink_cairo_surface_srgb_to_linear(_cairo_surface*) 6.72 57.32 4.44 563 0.01 0.01 ink_cairo_surface_linear_to_srgb(_cairo_surface*) 5.51 60.96 3.64 1216 0.00 0.00 Inkscape::Filters::FilterGaussian::~FilterGaussian() 5.23 64.42 3.46 internal_modf 0.59 64.81 0.39 _mcount_private 0.41 65.08 0.27 __fentry__ 0.12 65.16 0.08 GC_mark_from 0.09 65.22 0.06 5579 0.00 0.00 Geom::parse_svg_path(char const*, Geom::SVGPathSink&) 0.06 65.26 0.04 35320 0.00 0.00 bounds_exact_transformed(std::vector<Geom::Path, std::allocator<Geom::Path> > const&, Geom::Affine const&) 0.06 65.30 0.04 8 0.01 0.01 convert_pixbuf_normal_to_argb32(_GdkPixbuf*) 0.05 65.33 0.03 885444 0.00 0.00 std::vector<Geom::Linear, std::allocator<Geom::Linear> >::_M_fill_insert(__gnu_cxx::__normal_iterator<Geom::Linear*, std::vector<Geom::Linear, std::allocator<Geom::Linear> > >, unsigned long long, Geom::Linear const&) The cost is absolutely dominated by ink_cairo_surface_srgb_to_linear() and ink_cairo_surface_linear_to_srgb(). My first instinct was to optimize those 2 functions, but then I thought why are those even being called every time I scroll through the image? Why not convert the images up front to linear and stay that way in memory? If that can't be done, then my optimization approach is: 1. replace ink_cairo_surface_srgb_to_linear() with a simple 3rd degree polynomial approximation (0.902590573087882 - 0.010238759806148x + 0.002825455367280x^2 + 0.000004414767235x^3) and vectorize with SSE intrinsics. The approximation was calculated by minimizing the square error (maxError = 0.313) over the range [10, 255]. For x < 10, it uses simple scaling. 2. replace ink_surface_linear_to_srgb() with a vectorized implementation of pow(). Unlike srgb_to_linear(), a low degree polynomial can't be used due to the curve having larger high order derivatives. An alternative would be piece wise, low order polynomials. The main question I have is what degree of accuracy is desired? Certainly, it doesn't need double precision pow() since the input is only 8 bits! Is +- 0.5 from the true value (before quantization) OK or do people depend on getting pixel perfect results? UJ

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xverbs
by Dmitry Zhulanov 26 Sep '16

26 Sep '16

Hi, all! Im a game developer and using the inkscape for layouting my game screens. Loading_screen_layout.svg one of them. It have g with id pause_button and rect with id sandclock_bound which I use for animation placement. The verbs feature which inkscape already have is have some limitations. The MAX_PATH for example. Also some verbs required user interactions, so I need some eXtended verbs here. Using python script I have load layout as xml and collecting element-id's of interactive elements with "onclick" attribute, for example. Using this element-id list I generate .yaml, which is some sort of batch file. Here is the .yaml file which is used with Inkscape to clean up layout and put button image in separated file with pause_button.svg filename. Also I count undoable actions to restore state generating verb EditUndo. command: inkscape -B loading_screen_layout.yaml ----------- loading_screen_layout.yaml --------- run: - xverb-id: XFileOpen, loading_screen_layout.svg - xverb-id: XUndoLabel, fresh_document - xverb-id: XSelectElement, pause_button - verb-id: EditInvert - verb-id: EditDelete - verb-id: FitCanvasToDrawing - xverb-id: XFileSaveAs, pause_button.svg # save with stupid name - xverb-id: UndoToLabel, fresh_document - xverb-id: XSelectElement, pause_button - verb-id: EditDelete - xverb-id: XUndoLabel, fresh_document - xverb-id: XSelectElement, sandclock_bounds - verb-id: EditDelete - xverb-id: XUndoLabel, fresh_document - xverb-id: XFileSaveAs, loading_screen_layout_release.svg # save with stupid name - verb-id: FileQuit ------------------ CUT HERE -------------------- I guess you can get readonly access on my launchpad page. https://code.launchpad.net/~dmitry-zhulanov/+junk/inkscape-xverbs Code is tested with mingw+windows7+VS2010 sdk. If you would like to merge the feature, I will clean up code to conforming code style, remove printf's & so on Any help or advice are appreciated! P.S. sorry for my bad english :) Best Regards, Dmitry Zhulanov

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Stroke to path
by Jabiertxo Arraiza Cenoz 02 Sep '16

02 Sep '16

Hi to all. This is a requets tor change "path->stroke to path" menu item to another definition -string- based in a new code. My proposal is path->to path This new code basicaly do a convert stroked item to path retaining paint-order, fills and markers. The patch is here: https://bugs.launchpad.net/inkscape/+bug/1556592 Cheers, Jabier.

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Arcs in the path editor.
by unknown＠example.com 01 Jul '16

01 Jul '16

Hi, I've not contributed to inkscape before, this is my first time. I have created a branch which supports editing elliptical arcs in the node editor. I'm new to bazaar (and inexperienced with launchpad) so I think I've done the right thing with a merge request here: https://code.launchpad.net/~danieljabailey/inkscape/arc_node_editor/+merge/… (but thought I'd check by asking on this list.) Is this an interesting feature? If so I can polish it up for merging into the main repo. Thanks. Dan.

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[UI] Rework Document Properties dialog
by Sebastian Zartner 23 Jun '16

23 Jun '16

Hi all, I took the time to draft a reworked Document Properties dialog. I already created a blueprint for that two years ago: https://blueprints.launchpad.net/inkscape/+spec/document-properties-rework And now I finally also described my proposal in a bit more detail including some mockups within the wiki: http://wiki.inkscape.org/wiki/index.php/BlueprintReworkedDocumentProperties… Would be great if someone took the time to review it and give me some feedback. Thank you in advance, Sebastian

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Release 0.92 plan
by Bryce Harrington 16 Jun '16

16 Jun '16

A year ago we kicked off a rapid 0.92 release, but turns out it wasn't so rapid! But I'd like to re-kickoff 0.92, with renewed hopes of getting through the remainder of the release process swiftly. The main thing the release got hung up on was the cmake transition, but at this point it's actually close to done and I think we can proceed. We've accumulated a lot of nice features for this release. Please review (and make sure your own items are listed!) http://wiki.inkscape.org/wiki/index.php/Release_notes/0.92 I'd like to propose the following expedited plan for getting the release out, with Chill being today, Frost in about a week, and Freeze a week or so. Bryce # Period Tasks Notes -------------------------------------------------------------------------------- √1. Open development. √Implement new build system √Begin switching packaging to use new build system 2. Chill. Development focuses on wrapping up Post inkscape-0.92-pre0.tar.gz Today Disable features that aren't finished Identify 'make distcheck' issues Identify remaining writing needed for Release Notes. Identify any release blocker bugs [scislac] Start an About Screen contest √ Recruit Release Wardens for Hard Freeze 3. Frost. Only production-ready code committed to Mainline Finalize any major changes to platform packaging May 15 Inkscape must pass 'make distcheck' (1 wk) Finalize about screen Finalize Release Notes except Known Issues Post additional inkscape-0.92-pre*.tar.gz releases Packagers test creating pkgs of the -pre* releases 4. Freeze. Stable Branch is forked from Mainline Regular development resumes on Mainline. May 22nd-ish Only Release Wardens can commit to Stable Branch Cherrypick bug fixes from Mainline to Stable Complete any late work under advisement of Wardens Focus on release-critical bug fixing. String Freeze No further string changes allowed on Stable Branch. Translators work on translations. Finalize all extensions Finalize codebase translations Finalize Known Issues section of Release Notes Finalize packaging scripts Post additional inkscape-0.92-pre*.tar.gz releases 5. Release. Post inkscape-0.92.tar.gz Post packages Post official announcements Plan 0.92.1+ release(s), if needed 6. Open development. == Postponed == Decide new unit testing system Ensure Windows uninstall works Integrate new swatch dialog Migrate mailing lists off sourceforge (Other bits off roadmap...) Triage and prioritize bugs report this year Finalize tutorials to be shipped with release Finalize other docs included in the release

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Style dialog
by Tavmjong Bah 07 Jun '16

07 Jun '16

Hi, One of the proposed GSOC projects is better CSS style sheet support. There are a number of simple things that can be done to improve Inkscape's use of style sheets and there is one big thing... adding a Style editing dialog. I've made a first stab at designing such a dialog. The dialog presents a list of CSS selectors. * Clicking on selector Selects all matching objects in the SVG document. * Double clicking on selector Selects all matching objects in the SVG document and opens CSS dialog. * Dragging selector Allows reordering selectors. * Click on object Selects all matching selectors. * Modifying property If "Sheet" enabled: modifies CSS of highlighted selector if only one selector highlighted otherwise produces error message. If "Attribute" selected: modifies inline style attribute. * Clicking on '+' in front of selector Adds selected objects to selector. * Clicking on 'x' in front of object Removes object from selector. * Clicking on '+' at bottom Opens up text dialog to add new selector. If the selector is a Class selector, adds the class attribute to the selected objects with the value of the selector name. If the class attribute already exists, appends the selector name to the class attribute value (the class attribute can include more than one class name). * Clicking on 'x' at bottom Removes selected selectors unless selector is a Class selector. If it is a Class selector: if the selector was selected by clicking on it, remove the selector; if the selector was selected by selecting objects, removes the selector name from all selected objects class attribute. This dialog could replace the "Selection Sets" dialog, using CSS class attributes to define sets. Please comment on the dialog here or at: http://wiki.inkscape.org/wiki/index.php/Style_Editor Tav

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