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Text drawn to screen where? (Pango splitting text fields excessively for other output.)
by mathog 02 May '13

02 May '13

Layout-TNG-Compute figures out glyphs, spans, etc. for screen output. But when and where is that information actually drawn to the screen? I have been working on EMF, R->L output and various other things, and discovered that Pango sometimes really goes to town breaking text fields into smaller "unbroken spans". These are necessary for screen display, since it must find a glyph/font pair for each unicode character, but some of the results are overkill for the "print" output functions, which typically need to know where the resulting glyph is, but most likely do not really care what (substitute) font was used. That is true for EMF output, and presumably for the other supported output formats as well. Example, when the following 7 unicode characters are entered, all in Arial font: (a) (grave accent) (b) (acute accent) (c) (circumflex accent) (d) pango_itemize breaks it into 3 pieces: (a) (grave accent) (b) (acute accent) (c) (circumflex accent) (d) because Arial (on the test system) did not have a glyph for circumflex, so it fell over to DejaVu Sans. These 3 smaller pieces are then fed one by one into pango_shape() and etc., until the information is ready for the screen. This is all well and good for screen display, but the same graphics structure is also used for "print" output (other than SVG, I think). The second fragment, in particular, is likely to be mishandled by whatever reads the file output, since that is a Mark, nonspacing unicode character, and should always follow a normal character in the same text record. In the print context the font substitution used within Inkscape is irrelevant for the construction of the output file. In all likelihood no or a different font substitution may take place in the target system. Breaking text strings that are in one "tspan" in the original SVG, down into several in other output formats, is certainly not the desired result! To work around this problem layout-Compute would need to keep two sets of books, as it were: setting up the fragments that eventually go to the screen, and the simpler set of fragments that go to print. The glyph<->character map is the same, but the print spans are merges of 1 or more screen spans. Inkscape would need to make a distinction between drawing to the screen, and drawing to a file, and send the appropriate set of spans to the appropriate target. Near as I can tell, at present it just sends the same structure to both destinations. (This effect is not seen with SVG output, because nstead of working from the screen's graphics structures, it just saves the stored XML.) Regards, David Mathog mathog@...1176... Manager, Sequence Analysis Facility, Biology Division, Caltech

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Trunk builds for Fedora
by Ryan Lerch 02 May '13

02 May '13

I have started doing builds of RPMs from Inkscape trunk for Fedora 17, 18 and 19: http://repos.fedorapeople.org/repos/ryanlerch/inkscape-unstable/ I don't have a cronjob for this, so they aren't nightly builds, but i hope to keep it fairly up-to-date. cheers, ryanlerch

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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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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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