- Inkscape Devel - Inkscape Mailman

"Flatten" vectors
by Alexander Brock 30 Jan '15

30 Jan '15

Hi, When drawing stuff I usually have a lot of overlapping areas. Sometimes I use a vinyl cutter to cut adhesive foil. Then I need to select the topmost object and subtract it from every object which is (partially) covered by the topmost object. Next, I need to repeat the process with the second-to-topmost object etc. I also need to convert all strokes etc. to paths to actually get paths plotted with non-zero width, otherwise it's just one cut along the path which is useless. I also need to intersect all objects with their respective clip or mask, if they are clipped or masked. For complex drawings this process takes a lot of time. I wondered if there's a plugin or something for "flattening" an image like that, essentially converting it to a set of non-overlapping closed paths without stroke. If there isn't such a functionality I'd like to program it. In which way should this be done? On which branch should I base this? Are there any major changes to parts of Inkscape planned which would interfere with this functionality / should I wait for some changes to be finished before I start? @Krzysztof Did you finish your API changes etc. you started in your GSoC project? Regards Alexander

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DBus Interface -- Compiling, Status and Usage Help?
by Mike Jarema 29 Jan '15

29 Jan '15

Hi All, TL;DR I've put forth some solid effort on the following, but need help: - how do I properly compile Inkscape 0.91 with DBus enabled? - I'm getting errors calling basic methods using the DBus API, eg. save() and save_as(), are others seeing this? - is the DBus API maintained? __ Some background first: __ My goal here is to automate some repetitive tasks across tens of thousands of SVGs. My approach uses a combination of these methods/verbs: load, selection_ungroup, object_to_path, selection_combine (union and exclusion), select_move, save_as. This is my first attempt at compiling Inkscape and using the DBus API, so I suspect the problem probably lies on my end. I'd appreciate pointers to help correct my ways. __ What I've done: __ I'm running an Ubuntu 14.04 image within VirtualBox. Here's how I've compiled Inkscape. Also I show a simple DBus test case, via python, which fails on save() and save_as(). # __ Install dependencies and get machine setup __ $ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.1 LTS Release: 14.04 Codename: trusty $ sudo apt-get update $ sudo apt-get install git bzr dbus build-essential autoconf automake autopoint intltool libtool libglib2.0-dev libpng12-dev libgc-dev libfreetype6-dev liblcms1-dev libgtkmm-2.4-dev libxslt1-dev libboost-dev libpopt-dev libgsl0-dev libaspell-dev libpoppler-dev libpoppler-glib-dev libssl-dev graphicsmagick-libmagick-dev-compat libwpg-dev libcdr-dev libvisio-dev libgnomevfs2-dev dbus-x11 libdbus-1-dev libdbus-glib-1-dev checkinstall xvfb curl $ sudo apt-get upgrade $ sudo apt-get autoremove $ sudo shutdown -r now # __ Download and build Inkscape __ $ wget https://inkscape.global.ssl.fastly.net/media/resources/file/inkscape-0.91.t… # recently released 0.91 tarball $ tar -xvf inkscape-0.91.tar.gz $ cd inkscape-0.91/ $ ./configure --enable-dbusapi $ make $ sudo make install $ inkscape --version Inkscape 0.91 r13725 (Jan 29 2015) # __ DBus interface test case ( http://ryanlerch.org/inkscape-dbus-documentation/#idm262544986224) __ $ echo $HOME /home/osboxes $ python Python 2.7.6 (default, Mar 22 2014, 22:59:56) [GCC 4.8.2] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import dbus >>> bus = dbus.SessionBus() >>> inkapp = bus.get_object('org.inkscape', '/org/inkscape/application') >>> desk2 = inkapp.desktop_new(dbus_interface='org.inkscape.application') >>> inkdoc1 = bus.get_object('org.inkscape', desk2) >>> doc1 = dbus.Interface(inkdoc1, dbus_interface="org.inkscape.document") >>> doc1.rectangle (0,0,100,100) dbus.String(u'rect18') >>> doc1.save_as("/home/osboxes/save-as-test.svg") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__ **keywords) File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.DBus.GLib.ErrorError: Method invoked for save_as returned FALSE but did not set error >>> doc1.save() Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__ **keywords) File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.DBus.GLib.ErrorError: Method invoked for save returned FALSE but did not set error # Note -- the net effect of the above in Inkscape is 2 open desktops: "New document 1" which is blank and unmodified, and "*New document 2" which correctly shows a 100x100 (blue) rectangle but is unsaved and for which I do not see any saved SVGs on my machine __ Help? __ Back to my initial Qs. Am I setting up prereqs and compiling Inkscape correctly to use the DBus API? Is the above test case reflective of a known issue on the DBus API or am I in the wrong? If it looks correct, I'm wondering if the DBus interface is still maintained, or incomplete, or subject to a regression? I'm hoping to sort this out for my purposes, but also think that this would generate a helpful "how-to" for anyone wishing to get DBus up and running on 0.91. Cheers and congrats on 0.91! -- Mike Jarema e: mike@...3206... w: mikejarema.com m: +1-905-399-4291

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Press Release and Comments
by Martin Owens 29 Jan '15

29 Jan '15

Hey Developers, I noticed there was already an announcement for the tar ball on hacker news here: https://news.ycombinator.com/item?id=8965155 The comments are interesting and might point the way to a nice user focused press release for 0.91. At least a good place to start if we don't want to have too many technical details in the news article. Martin,

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debug output of SVG structure
by Torsten Mohr 28 Jan '15

28 Jan '15

Hello, i'd like to extend inkscape and for this i'd like to do some debug output of the internal structure. Can anybody tell me how to do this in the sources? Maybe there is an example? Best regards Torsten

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Automatic pixel art cleaning
by Krzysztof Kosiński 28 Jan '15

28 Jan '15

Hello For one of the courses I am doing at the university, I want to create a pixel art cleaner which would complement the recent GSoC pixel art vectorizer. It is a well known problem that most pixel art images available on the Internet are not appropriate inputs for the vectorizer: they have multiplied pixels, additional grids, various artifacts, defacements with watermarks, etc. Here are a few examples: 1. Multiplied pixels only: http://research.microsoft.com/en-us/um/people/kopf/pixelart/supplementary/r… 2. Border, grid, JPEG artifacts: http://img.wonderhowto.com/img/56/01/63456484792752/0/make-pixel-art-minecr… 3. Grid, imperfect alignment: http://fc04.deviantart.net/fs70/i/2013/258/6/b/link_pixel_art_grid_by_matbo… 4. Grid, imperfect alignment, defacement: http://1.bp.blogspot.com/-jOu8vhgnSFQ/U7sQV0HSRwI/AAAAAAAACEs/2lGHanqeF90/s… 5. Grid, nonuniform pixel colors: http://fc06.deviantart.net/fs71/f/2011/227/6/4/link_pixel_art_by_malandrus-… 6. Scan of a hand-filled grid paper: http://th04.deviantart.net/fs71/PRE/f/2013/207/5/b/goku_pixel_art_by_hidema… 7. Photographs: http://fc03.deviantart.net/fs71/i/2013/336/1/6/glumanda_pixel_art_by_beffra… http://farm8.staticflickr.com/7258/7434425816_9b810a3b6d_z.jpg I'm looking for a few ideas on how to design an algorithm that would automatically convert these images to a clean input to the pixel art vectorizer. Obviously any successful algorithm will exploit three basic facts about pixel art: 1. The pixels are laid out in a rectangular grid. 2. Color within a pixel is uniform. 3. The color palette is limited. My first guess is to use a GSL and find the parameters of the pixel grid by using a generic optimizer. The cost function could include the variance of color within a pixel, area of the pixels (larger pixels should be preferred), and a few other parameters. After identifying the parameters of the pixel grid, the colors of the pixels would be found by averaging and then clustering (to eliminate JPEG artifacts and defacements). Initially I considered using FFT methods, but this would never work for images such as 5, 6 or 7, and ideally I want to cover them as well. Another possibility is to use the Hough transform to find sharp lines in the image and then look for regularities in the lines. Does anyone have more ideas? Regards, Krzysztof

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Release Training Exercise
by Martin Owens 28 Jan '15

28 Jan '15

Hi Developers, I'm going to try and be as verbose as possible about the procedure to upload your own release to inkscape.org, I need you to perform this task if you package any of our release packages because a) it's good practice and b) packages will be signed with your gpg key and it'd be an odd world where I could do that for you. :-) Releasing on inkscape.org: 1. Make sure you have a user account on inkscape.org - Go to https://inkscape.org and look in the top right of the page and note your logged in status, use the links provided in the drop down to log in or register an account. 2. Make sure that your account has a big enough quota - Go to https://inkscape.org/user/ and hover over the "Upload Quota" bar, you will only see 10MB if you are a normal user at this time. If you do not see a 1GB quota then you need to contact a website admin (me) to put you into the releases group with the larger quota. 3. Make sure you have a public gpg key recorded. - Go to https://inkscape.org/user/edit/ and fill in the right boxes, the GPG Public Key box is expecting a pasted public key (not private key!) and hit submit when done. 4. Make a folder for your releases in your 'InkSpace'. - Go to https://inkscape.org/gallery/new/ and fill in the name of the folder you want to use. This folder is only for your own organisation and won't be seen by users. 5. Upload your released file - Go to https://inkscape.org/user/ and drag your file to the new gallery folder created above. The upload may take some time but you should be able to see a progress bar as it uploads. (if you don't have javascript enabled, you can click on the folder and then click add and follow the manual form) 6. Enter all the details - Go into your folder and click on the newly uploaded item. It should have a red border indicating it's not yet published (if you used the drag+drop method) - Going into the editor section you should be able to fill in the title for the released file. - Paste in the release notes into the description. - Select 'Releases' from the category drop down. - Attach the sig file from your detached. - Select 'GPLv2' from the Licenses drop down. - Check 'Mirror' checkbox (if you have this) - Check 'Visible' checkbox Submit this form. 7. Verify and copy link - If everything's gone well you should now see your released file with a green padlock indicating the gpg signature has been verified against your account public key. - Download the release by clicking on the down-arrow icon. Confirm it's the file you intended. - Copy this download link. 8. Link from the downloads page. - For this step you will need CMS editor access or pass this task onto a website editor and/or translator. - Edit the downloads pages for the right OS and update with the right version, release and other details as you would want it to be presented to users. Add the copied link into the right place. - Save /and/ then hit the blue publish button. Congratulations, you've uploaded, released and published your release file. Let the website administrator (me) know if you have any difficulty with this process. Best Regards, Martin Owens

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Another Kaleidoscope video
by Jabiertxo Arraiza Cenoz 25 Jan '15

25 Jan '15

Hi to all. A new video for LPE Rotate Copies whith the Kaleidoscope feature. Now focused in a simple path and live editing. https://www.youtube.com/watch?v=fBQpvfgT4mE Regards, Jabier.

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Hard Freeze for 0.91
by Bryce Harrington 25 Jan '15

25 Jan '15

4. Feature Freeze √ Stable Branch is forked from Mainline √ Regular development resumes on Mainline. √ Avoid major refactorings on Mainline. √ Only bug fixes committed to Stable Branch. √ Bug fixes are cherrypicked from Mainline. √ Inkscape must pass 'make distcheck' String Freeze √ No further string changes allowed on Stable Branch. √ Finalize tutorials to be shipped with release √ Finalize other docs included in the release √ Finalize about screen √ Finalize Release Notes except Known Issues √ Translators work on translations. √ Recruit Release Wardens for Hard Freeze 5. Hard freeze. √ 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. Finalize all extensions Finalize codebase translations Finalize Known Issues section of Release Notes Finalize packaging scripts Post additional inkscape-0.91-pre*.tar.gz releases Inkscape has completed Feature Freeze and String Freeze, and is now moving to Hard Freeze. Translators, thanks for your efforts. If there are any late translations please coordinate with Jazzynico, and submit them to him for committing. We're down to the wire though so don't delay! Developers, at this point only Josh and I should be committing to the tree. We'll accept patches if they're either a) obviously safe and a useful fix, or b) more complex but fix a particularly severe bug. In either case, please make sure the fix is already applied to the 0.92 branch, and then send Josh and I a backported patch ready to be landed on 0.91. Josh will follow up with our evaluation of blocker bugs. Things actually look to be in fairly good shape. If anyone has a bug they want to raise as a blocker, now's the time to do it! Since we're in a new stage of the release, I'll cut one last pre-release tarball. Bryce P.S. We're also going to need to do some marketing work to publicise the release, and I'm thinking we should establish a formal marketing team. I'll try to organize something soon; if you're interested in joining early, or have ideas to consider in the meantime, please shoot me an email.

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New feature for Copy Rotale LPE Kaleidoscope.
by Jabiertxo Arraiza Cenoz 25 Jan '15

25 Jan '15

Hi to all. I Just finish a new effect in the middle of rotate copies LPE. Is called Kaleidoscope. Here is the branch: https://code.launchpad.net/~inkscape.dev/inkscape/copy-rotate-lpe-improveme… And, as usual, a video: https://www.youtube.com/watch?v=LfMixSKy3Eo Best, J.

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Help/advice needed with crash on bitmap paste/import (embed) on OS X >= 10.9
by su_v 24 Jan '15

24 Jan '15

Current 0.91.x and trunk packages for OS X are affected by a rather critical issue on OS X 10.9 Mavericks and 10.10 Yosemite: * Pasting a bitmap image from the clipboard, or importing it via 'File > Import' with default import options (embed, resolution from file) crashes the application. [1] * Oddly, it seems that if the build has debug messages (to stdout) in the source code related to retrieving the image resolution from file, the crash no longer happens.[2] * First observed by testers of experimental osxmenu builds back in Nov 2013 (osxmenu is always quite up-to-date with trunk at any time). The debug messages had been committed in the osxmenu branch and I haven't seen new feedback about the same type of crashes with osxmenu builds. [3] * One tester of 0.91 pre-release and trunk snapshot builds reported OTOH that this type of crashes stopped after rebooting and switching to a different user (same system otherwise) - see comment 10 in bug 1398521 ([1]). * The crashes never reproduced for me on OS X 10.7.5 (build system for current available packages). How to proceed? This crash occurs in a very basic feature, and can get easily disruptive for Inkscape users on current OS X. Should we ship the upcoming stable release package with the debug messages applied as part of packaging (maintaining the diff in 'packaging/macosx')? Regards, V [1] Related bug reports: https://bugs.launchpad.net/bugs/1398521 https://bugs.launchpad.net/bugs/1410793 https://bugs.launchpad.net/bugs/1413478 [2] Diff applied to custom test builds (reportedly don't crash): https://bugs.launchpad.net/inkscape/+bug/1410793/comments/7 https://www.dropbox.com/sh/magg5vw5j3y1y3u/AADgl_FtaO2ZLKAVOOgO2EsMa/Inksca… [3] Backtrace of debug build by an early tester of osxmenu (at the time on Mavericks) - Nov 22, 2013: https://gist.github.com/su-v/cd4ef1cc1c4832f07989 I noticed 'val=NaN' on this line: https://gist.github.com/su-v/cd4ef1cc1c4832f07989#file-crash-mavericks-impo…

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