August 2015 - Inkscape Devel - Inkscape Mailman

GIT/BZR clone instructions are incorrect
by Shyamal Chandra 28 Aug '15

28 Aug '15

Hi, The following instructions are incorrect in the screenshot attached. What should I do to obtain the source code for the inkscape source code? Thanks! Shyamal Chandra shyamalc@...400...

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Election ballots sent out
by Ted Gould 28 Aug '15

28 Aug '15

Hello, This is just an e-mail to tell everyone that the ballots have been sent out for the election. If it this point if you haven't received a ballot, and you expect to, that is a problem. Please check your spam filters and then send an e-mail to the election committee. Because of the time that it took to send out the ballots we've extended the voting period to be two weeks from yesterday, or until Sept. 10th. Please don't wait until the end and forget though. Thanks, Ted

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Fwd: User Help (tutorials)
by C R 27 Aug '15

27 Aug '15

We can tackle this on several fronts: 1. Feature-oriented videos to demonstrate tools. These videos would accompany the documentation. I found this quite helpful to learn Blender 3D. 2. A beginner walk-through of Inkscape's user interface 3. A teaser/commercial with screencaptures of some of our talented community of artists working on professional projects with Inkscape. 4. Migration from Adobe Illustrator to Inkscape for graphics professionals 5. A short series of how-to videos demonstrating how to make some common graphics tasks like: -How to make elements like vines/flourishes -How to use Inkscape for package design -How to use Inkscape for labels, barcodes, and templates -How to use Inkscape for product design -Using Inkscape to make video caption templates -Favourites, or most-asked-for tutorials on the forums. -etc. 6. Tips and tricks to do things quickly in Inkscape. Some of these things aren't obvious, but highlighting features and how to use them to supercharge your graphics workflow is key especially for production artists. I can do pretty much all of these, with the added bonus of using Blender 3D as my Open Source video production software of choice. My only real limitation is time, but I'm happy to provide my graphics and materials to the team so others can help by filling in the gaps when they get time. Thoughts? -C On 25 Aug 2015 3:02 pm, "Alex Valavanis" <valavanisalex@...400...> wrote: > We briefly discussed the prospect of adding tutorials on a streaming > site at the Hackfest... given the size of the user community, the ad > revenue from something like YouTube could be helpful. As for who > would do it, I'm not sure! > > AV > > On 25 August 2015 at 14:53, Martin Owens <doctormo@...400...> wrote: > > Dear developers, > > > > I was reviewing inkscape on deviantArt and I noticed a theme: > > > > www.deviantart.com/browse/all/journals/?order=5&q=inkscape > > > > Apart from the odd "I hate Inkscape" etc, there's a big need for > > tutorials and most are interested in video tutorials. > > > > This is probably something we should put together for the website. > > Something coherent for users. > > > > But I'm not exactly sure of the structure we should use. A competition? > > Scouting for talent? > > > > What do you think? > > > > Best Regards, Martin Owens > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > > Inkscape-devel mailing list > > Inkscape-devel(a)lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/inkscape-devel > > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Inkscape-devel mailing list > Inkscape-devel(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/inkscape-devel >

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RFC: stroke-alignment property for SVG and Inkscape
by Juan Luis Boya García 27 Aug '15

27 Aug '15

Hi. I'm Juan Luis Boya. As a Semester of Code project (http://semesterofcode.com/) I've have been for some time trying to add alternative stroke alignment options to Inkscape. There is an in-progress W3C draft for SVG2 that attempts to introduce a property named `stroke-alignment` for this purpose. This is an attempt to create an implementation of it. http://www.w3.org/TR/svg-strokes/ This property would control the placement of path strokes. This is better explained with an example. See this image: http://i.imgur.com/GIqKrwj.png The image shows the same rectangle with four different stroking modes. The black line represents the shape path, as that you would see with the 'Edit paths by nodes' tool in Inkscape. Shown in orange is the stroke of the path as would be seen by the user. A issue with the previous proposal was there was no definition for open paths. I propose to amend this in two ways: a) Adding two new values: `left` and `right`. `left` would place the stroke at the left of each path segment. The direction of the path is determined by the order of the nodes, in the same manner arrow lines work. The following image shows an example of how this would work: http://i.imgur.com/otULloP.png b) `inset` and `outset` would work as if the shapes were closed with a straight line, except that line would not be rendered. The property would be set as an style property (in CSS code). Add a few toggle buttons would be added to the Inkscape UI in the Stroke Style tab in order to control the value of the property. As for the implementation: 1. The offsetting would be done only to the stroke line, which will still be rendered as an stroked line (instead of being converted to a polygon). 2. The property would be added to NRStyle and SPStyle classes. 3. Add buttons to the Stroke Style UI. 4. As far as I know, paths are rendered in DrawingShape::_renderItem(). This method reads style properties from a class member named _nrstyle. (Therefore we need to add properties to both NRStyle and SPStyle). Now, this method would read the property and stroke appropriately. At the time of writing Cairo does not have support for a style property like this, so we will do the offsetting in Inkscape. a) If the value is center, the same path would be used for both stroke and fill. b) In other case, first fill will be applied using the original path, then the offsetted path would be calculated and stroked. For the stroke-alignment values 'right' and 'left' applying the offset is as simple as offsetting by stroke-width/2, positive or negative respectively. 'inset' and 'outset' are a bit more problematic, especially for self-intersecting shapes. This figure shows how a self-intersecting pentagram would approximately look with different values of stroke-alignment if 'inset' and 'outset' are considered valid for self-intersecting paths. http://i.imgur.com/s8sLumk.png In this document I explain a procedure to stroke them, but there are some required algorithms I don't know, remarked in "Issue" boxes: https://inkscape.org/en/gallery/item/6356/stroke-alignment.pdf As for the state of the implementation: * After quite a bit of time I've got to understand the classes that make Inkscape render shapes. I have been able to add the required SVG property to Inkscape. I'll commit it soon. The controls in the UI will be hidden under a compile time flag. * I've written code to outline the stroke, but also... * I've found several important bugs in half_outline() that cause it to fail even for simple shapes. For instance, this is the result of passing a triangle to half_outline() when it has been drawn counterclockwise: http://i.imgur.com/3Tq9SvZ.jpg For that specific bug I have a provisional fix, but it should be examined more closely. Regards, Juan Luis.

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Fwd: Fwd: User Help (tutorials)
by C R 26 Aug '15

26 Aug '15

Thanks for the words of encouragement. :) There should probably be some simple, brief subtitling going on to describe what's happening, since it's not always clear. For example, when using alt-scrollwheel to select objects down the object tree, the screen looks like it's going nuts, changing the opacity of things quickly, and nothing is pressed except the alt-hotkey. I made a key-board hotkey font using inkscape a while back, and will include it in the materials. It makes hotkey charts like this one very easy to do: http://opendesignstudio.org/gimp/quickref/video_hotkeys_gimp_paths_tool_scr… It would allow the making of a template for hotkey captions much easier without any need to copy/paste from large svg file full of hotkeys. :) I can leave a bit of extra space under the english subtitle to add translations. Thanks again for your thoughts and advice. -C On Wed, Aug 26, 2015 at 4:29 PM, Maren Hachmann <maren@...3165...> wrote: > Hi C, > > FWIW, I would certainly like to see those videos come to life :) > > I know there are already lots and lots of Inkscape videos on youtube, > and even complete series. > > But if we had something official, that is explicitly published by the > project, has Inkscape's trademarks (the logo is CC-By-SA), is linked > from our sites, and has been reviewed by the developers (or a larger > group of users) for correctness (there are also many low-quality videos > out there), that would be really cool and helpful. > > If they are short, and don't need translation (we could have the menu > item names you click on translated in subtitles), that would be a big plus. > > Thank you for your ideas, and willingness to make them true :), > Regards, > Maren > > Am 26.08.2015 um 17:15 schrieb C R: > > Thanks for the input, Shlomi Fish. > > > > From the forums I get the impression we are looking for step-by-step > > videos more than written ones. > > Also, your tutorial leaves out the steps taken to download, install, and > > use the extension (which could be a tutorial all on it's own). > > Since there are plenty of features to go over in Inkscape without > > installing extensions for now I think I'll stick with Inkscape's core > > functionality. > > I would also argue that if enough people are interested in a feature, > > and the only way to get that feature to work correctly is to install an > > extension, then really, it should be merged into trunk before doing an > > "official" video on it. > > > > What I'm envisioning is a simple screen capture set to music, short > > videos, no more than about 60 seconds each seconds to highlight a > > feature (unless the feature requires more). > > > > Each clip can feature the same 5-second intro with the Inkscape Logo and > > tagline "Draw-freely". My initial thought: bouncing ink-droplet bounces > > in, looks both ways, then crouches down and leaps up against the white > > wall of the background, hits the wall, and spashes out into the Inkscape > > logo. The words "draw freely" will then be drawn in quickly as if by > > invisible pen (with suitably sketchy sound effect), and then fade to > > white. The effect would be a simple, clean and effective piece of > > branding that is memorable, but doesn't make the viewers crazy if they > > are watching 30 in a row. :) The white would fade directly into a > > timelapse of the clip that will be shown overlaid with the title of the > > clip (lasts about 3 seconds). That fades to the actual screencapture, > > with captioned information. Once the screencapture video is done, the > > video fades to white background again with a small Inkscape logo with > > inkscape.org <http://inkscape.org> url, and small-print "This video is > > distributed under the GPL licence" etc. > > > > Because I agree that "bullshit walks", and this likely all sounds like > > pie-in-the-sky at present... I shall make the intro, the outro and > > sammich a tutorial of the Selection Tool as the feature in between. > > > > Pending approval from the group, I will then make all materials > > available via a github archive, which can be cloned and modified, and > > maintained as any other piece of the project might be. > > > > More soon. > > > > -C > > > > > > On Wed, Aug 26, 2015 at 1:12 PM, Shlomi Fish <shlomif@...2985... > > <mailto:shlomif@...2985...>> wrote: > > > > Hi C, > > > > On Tue, 25 Aug 2015 22:45:49 +0100 > > C R <cajhne@...400... <mailto:cajhne@...400...>> wrote: > > > > > We can tackle this on several fronts: > > > > > > 1. Feature-oriented videos to demonstrate tools. These videos would > > > accompany the documentation. I found this quite helpful to learn > > Blender 3D. > > > > > > 2. A beginner walk-through of Inkscape's user interface > > > > > > 3. A teaser/commercial with screencaptures of some of our talented > > > community of artists working on professional projects with > Inkscape. > > > > > > 4. Migration from Adobe Illustrator to Inkscape for graphics > > professionals > > > > > > 5. A short series of how-to videos demonstrating how to make some > > common > > > graphics tasks like: > > > > > > -How to make elements like vines/flourishes > > > > > > -How to use Inkscape for package design > > > > > > -How to use Inkscape for labels, barcodes, and templates > > > > > > -How to use Inkscape for product design > > > > > > -Using Inkscape to make video caption templates > > > > > > -Favourites, or most-asked-for tutorials on the forums. > > > > > > -etc. > > > > > > 6. Tips and tricks to do things quickly in Inkscape. Some of these > > things > > > aren't obvious, but highlighting features and how to use them to > > > supercharge your graphics workflow is key especially for > > production artists. > > > > > > I can do pretty much all of these, with the added bonus of using > > Blender 3D > > > as my Open Source video production software of choice. > > > > > > My only real limitation is time, but I'm happy to provide my > > graphics and > > > materials to the team so others can help by filling in the gaps > > when they > > > get time. > > > > > > Thoughts? > > > > > > > This seems like a good categorisation of what can be done. Now I > > think it's > > important that people actually start writing tutorials because "code > > talks; > > bullshit walks.". A contest may be a good idea, but people can start > > working > > before that. > > > > FWIW, I have written this tutorial-of-sorts on how I prepared a > > "Back to my > > homepage" logo in Inkscape that emulates the one used on the film > > "Back to the > > Future": > > > > http://www.shlomifish.org/art/back-to-my-homepage-2nd-ver/ > > > > I licence the final product under the Public Domain , but > > acknowledge that it > > may be subject to trademark or copyright claims by the owners of the > > Back to > > the Future franchise. I didn't assign a licence to the text of the > > tutorial > > itself, but I'm open to suggestions. > > > > I have also used Inkscape to prepare some captions images (a la > > lolcats) but > > I'm a little rusty in doing that and it may be too trivial to do. > > > > Regards, > > > > Shlomi Fish > > > > > > > -C > > > > > > On 25 Aug 2015 3:02 pm, "Alex Valavanis" <valavanisalex@...400... > > <mailto:valavanisalex@...400...>> wrote: > > > > > > > We briefly discussed the prospect of adding tutorials on a > streaming > > > > site at the Hackfest... given the size of the user community, > the ad > > > > revenue from something like YouTube could be helpful. As for who > > > > would do it, I'm not sure! > > > > > > > > AV > > > > > > > > On 25 August 2015 at 14:53, Martin Owens <doctormo@...400... > > <mailto:doctormo@...400...>> wrote: > > > > > Dear developers, > > > > > > > > > > I was reviewing inkscape on deviantArt and I noticed a theme: > > > > > > > > > > www.deviantart.com/browse/all/journals/?order=5&q=inkscape > > <http://www.deviantart.com/browse/all/journals/?order=5&q=inkscape> > > > > > > > > > > Apart from the odd "I hate Inkscape" etc, there's a big need > for > > > > > tutorials and most are interested in video tutorials. > > > > > > > > > > This is probably something we should put together for the > website. > > > > > Something coherent for users. > > > > > > > > > > But I'm not exactly sure of the structure we should use. A > > competition? > > > > > Scouting for talent? > > > > > > > > > > What do you think? > > > > > > > > > > Best Regards, Martin Owens > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > > > _______________________________________________ > > > > > Inkscape-devel mailing list > > > > > Inkscape-devel(a)lists.sourceforge.net > > <mailto:Inkscape-devel@lists.sourceforge.net> > > > > > https://lists.sourceforge.net/lists/listinfo/inkscape-devel > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > > > > Inkscape-devel mailing list > > > > Inkscape-devel(a)lists.sourceforge.net > > <mailto:Inkscape-devel@lists.sourceforge.net> > > > > https://lists.sourceforge.net/lists/listinfo/inkscape-devel > > > > > > > > > > > > -- > > ----------------------------------------------------------------- > > Shlomi Fish http://www.shlomifish.org/ > > http://is.gd/KNvczZ - The FSF Announces New Versions of the GPL > > > > It is a good idea to stop worrying about problems (or “problems” in > > quotes) > > that cannot be fixed. > > > > Please reply to list if it's a mailing list post - > > http://shlom.in/reply . > > > > > > > > > > > ------------------------------------------------------------------------------ > > > > > > > > _______________________________________________ > > Inkscape-devel mailing list > > Inkscape-devel(a)lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/inkscape-devel > > > > > > ------------------------------------------------------------------------------ > _______________________________________________ > Inkscape-devel mailing list > Inkscape-devel(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/inkscape-devel >

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Video Tutorials
by Jelle Mulder 26 Aug '15

26 Aug '15

Hello All, How feasible would it be to make these video's play in a SVG framework that uses SVG text for subtitles? Translating those subtitle files would be really straightforward. Unfortunately, using SMIL is not really an option for the timing as that isn't supported by MS, so we'd have to create some js framework for that or maybe Fake smile if that would do the trick. Doing it in js would still be fairly simple by taking the text and start and end times from a txt file, but doing more complicated stuff would be more work in js. I am not sure if you can overlay SVG content on top of video content as that would be really neat, but it would be quite nice if it would be used as an SVG showcase as well. I've seen demo's with animated video content, so my gut feeling says it should be possible. Using that we could use the Icon symbols as well being displayed when something is being selected, follow the mouse pointer in a zoomed area with <use> in a clip and other sexy stuff, to create some really state of the art tutorials. The problem would probably be hosting this kind of stuff. There are about 400 Million web users here in China that cannot have a peek at Youtube without VPN and I am not sure if Inkscape.org would be up to hosting it if just 0.001% of those would take a peek at a lazy day, just after lunch. I wonder though if there is some outfit around that would be interested in hosting this kind of thing as sponsors. Apart from that, making such a showcase would also be useful for people interested in authoring SVG itself and for showing the advantage of using Inkscape for that. I could make a proof of concept for that, but considering the amount of time involved, I'd first like to know what your thoughts are on this idea. Cheers, Jelle Mulder

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Hackfest C++11 migration discussion
by Alex Valavanis 26 Aug '15

26 Aug '15

Summary: We are considering adopting new cleaner & more flexible C++ language features. This may not work with some older compiler versions. Opinions are warmly welcomed! ----- Hi All, At the Hackfest, we discussed adopting features from the C++11 standard into our code. The advantages are (among others) significantly cleaner, more flexible and more readable syntax. I've included three examples at the end of this message. Our discussion included consideration of users of older compilers. A convenient summary of compiler support is available at [1]. Several features (illustrated in the examples below) are well supported, including range-based for loops, type inference and variadic templates. If we adopt these three specific features, we will require: GCC >= 4.6 Clang >= 3.1 (or another suitable compiler!) A complete migration to C++11 would require: GCC >= 4.8.1 Clang >= 3.3 I propose that we adopt C++11 on a feature-by-feature basis, with discussion before requiring any bump in compiler version. We can track this in the wiki or similar. We could potentially consider introducing a couple of the "safer" features within the next release cycle. Maybe even in time for 0.92?! I will be pushing some demos of C++11 features to the branch lp:inkscape/~valavanisalex/inkscape/cpp11-port [2] for testing by other devs/testers before we consider merging anything into trunk. I will let you know when anything interesting is there! We're very interested in any opinions or comments! Will this migration affect you? Is it good for the project? Do you see any trouble ahead? Best wishes, Alex [1] http://en.cppreference.com/w/cpp/compiler_support [2] https://code.launchpad.net/~valavanisalex/inkscape/cpp11-port (Examples follow) == 1. Type inference == The compiler can automatically determine the type of variables, based on the return type of functions etc. For example: std::vector<std::pair<Glib::ustring, Glib::ustring> > pairs = ColorProfile::getProfileFilesWithNames(); becomes... auto pairs = ColorProfile::getProfileFilesWithNames(); == 2. Range-based for-loops == Often, we just want to iterate over the entire contents of a container. The syntax is much cleaner in C++11: for(std::vector<Inkscape::SnapCandidatePoint>::iterator i = _all_snap_sources_sorted.begin(); i != _all_snap_sources_sorted.end(); ++i){ // whatever } becomes... for(auto &i : _all_snap_sources_sorted){ // whatever } == 3. Variadic templates == Sometimes we want many variants on the same function that take a different number of arguments. For example: template <typename CurveType, typename A> void appendNew(A a) { // whatever } template <typename CurveType, typename A, typename B> void appendNew(A a, B b) { // whatever } <snip /> template <typename CurveType, typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H, typename I> void appendNew(A a, B b, C c, D d, E e, F f, G g, H h, I i) { // whatever } This long (and incomplete) set of functions can be replaced by a single variadic template in C++11: template <typename CurveType, typename... Args> void appendNew(Args... args) { // whatever }

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Review of small branch
by Jabiertxo Arraiza Cenoz 24 Aug '15

24 Aug '15

Hi all, devs I have a very tiny branch to review. Anyone are welcome to help on it! https://code.launchpad.net/~inkscape.dev/inkscape/bend_and_pattern_alon g_path_width_modified_by_knot/+merge/266659 The video of the branch working: https://inkscape.org/en/gallery/item/6341/ All the best, J.

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New Gnome development libraries need C++11 compiler support
by Alex Valavanis 24 Aug '15

24 Aug '15

Hi All, Time to revisit our old discussions about C++11 support (with some urgency). It seems that unstable versions of libsigc++ (as of version 2.4.1, I think) require the C++11 standard to be enabled by the compiler [1]. This is already causing build failures [2] so we need to act soon. Indeed, as suv points out in [2], many of the Gnome development libraries have switched over too. As far as I recall, older versions of OS X do not have a compiler that supports C++11 fully, so we'd risk killing off support for these users if we enforce the C++11 standard in Inkscape. Some options... 1. Add configuration tests to selectively enable C++11 only on systems with the new libraries... this could be complicated to maintain, though 2. Enforce C++11 builds, but forbid developers from using new features until they have been tested on a wide range of systems... I'm not sure how we'd enforce this once we've made it technically possible to build C++11 code 3. Enforce C++11 builds, and give developers "green light" to use new features. This is likely to cause problems for users of old OSes! Best wishes, AV [1] https://git.gnome.org/browse/libsigc++2/commit/?id=5a6b8f21f83dfe0f64770196… [2] https://bugs.launchpad.net/inkscape/+bug/1488079

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[Election Question] Some questions.
by Tavmjong Bah 24 Aug '15

24 Aug '15

Questions for the candidates: The board's primary role has been to handle Inkscape's assets. How can Inkscape's assets be used to grow the Inkscape community? Are there specific projects that you think the board should pursue? How would you contribute to them? Tav

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