- Inkscape Devel - Inkscape Mailman

Re: [Inkscape-devel] new svgslice release
by bulia byak 23 Apr '05

23 Apr '05

On 4/23/05, Lee Braiden <lee.b@...786...> wrote: > On Saturday 23 Apr 2005 13:49, bulia byak wrote: > > On 4/23/05, Lee Braiden <lee.b@...786...> wrote: > > > I have a rectangle stretching across the width of the canvas. In the > > > toolbar, it says this rect is 769px by 240px. But in the saved SVG, the > > > width says 615 by 183. I would have expected this to be the same, if > > > it's also in px. Maybe I'm misunderstanding something? The parent <g> of the rect has transform= attribute which stretches it, hence the discrepancy. Generally, in SVG you cannot rely just on the attributes of the element itself; you need to take into account the transforms of all its ancestors because they all affect that element. That's why extracting dimensions from SVG is a nontrivial task, and that's why I added the --query command line options to make this accessible for script/extension writers. If you query that rect by Inkscape you get the correct width: $ inkscape layer_demo.svg --query-width --query-id ONEandTWO 769.54902 i.e. the same as it has when rendered on screen. -- bulia byak Inkscape. Draw Freely. http://www.inkscape.org

1 0

new svgslice release
by Lee Braiden 23 Apr '05

23 Apr '05

Hi all, Just a note to say that svgslice has been updated: http://www.digitalunleashed.com/downloads/svgslice/svgslice_0.12.tar.bz2 No inkscape extension yet (I'm working on that next) but it does fix a few bugs, in case anyone has been struggling with it. There are four demo files included, and the coordinates of the slicing in the last one are incorrect. The problem seems to be that Inkscape doesn't respect the units you select in the toolbar for rectangles, but perhaps I'm misunderstanding something there. Currently, I'm not handling unit conversion, and the different inkscape unit options (document, grid, etc.) all have to be set to the same units. I'm sure there's some unit I could treat this as and then convert, but it looks like a bug, since it's in different units from everything else, and seems to resist change. Anyway, if anyone feels like playing around, I'd appreciate any hints you might have on that issue. -- Lee Braiden http://www.DigitalUnleashed.com

4 7

ill2svg.xslt
by Bryce Harrington 23 Apr '05

23 Apr '05

----- Forwarded message from Holger Will <holger@...792...> ----- Date: Tue, 19 Apr 2005 21:45:34 +0200 From: Holger Will <holger@...792...> To: clipart-list <clipart@...626...> Subject: Re: [Clipart] Image portability Christopher Schmidt wrote: >On Tue, Apr 19, 2005 at 09:09:51PM +0300, Nicu Buculei wrote: > > >>Linda Kim wrote: >>however, the file size is still a problem, i think 0.5MB is huge for an >>image like >>http://openclipart.org/clipart//food/desserts/ice_cream_cone_linda_kim_01.s… >>(i would expect something 10-20 times smaller) >> >> > >A completely reasonable expectation: after doing just a simple removal >of a lot of data that was encoded in CDATA elements, the image size is >reduced by a factor of 20, which results in the SVG available at >http://crschmidt.net/tmp/icecream.svg . > >(This URL is not permanent: it may dissapear at some point in the >future.) > >This image is only 21kb, as opposed to 450. > >Key to creating decent SVG from Adobe is to just check the content by >hand: it's really easy to pull out a lot of stuff most of the time, in >my experience. > > ive just written a simple xslt stylesheet to do the job, you can find it here: http://www.treebuilder.de/svg/ill2svg.xslt hope you find it usefull Holger _______________________________________________ clipart mailing list clipart@...626... http://lists.freedesktop.org/mailman/listinfo/clipart ----- End forwarded message -----

4 4

Re: [Inkscape-devel] Effects Tarball
by aaron＠...749... 23 Apr '05

23 Apr '05

bulia byak wrote: > On 4/17/05, bulia byak <buliabyak@...400...> wrote: >>On 4/17/05, aaron@...749... <aaron@...749...> wrote: >>>http://www.ekips.org/comp/inkscape/inx/InkexEffects.png >> >>That's quite impressive. Do these extensions have GUIs of their own? >>If so can you include one of them into the screenshot as well? > > Oh, and by the way, shouldn't we put these extensions into CVS so that > they are available to all? Can you send me an archive of all the > files? Or do you want to do this when you are finished with them? Thanks. These effects all use Ted's autogui functionality. Autogui isn't fully functional yet, so I don't know if it should be put in a screenshot. If you want to put these effects into CVS it is fine by me. I will continue tweaking these and adding more effects as ideas come to me. As long as CVS gets a fresh copy occasionlly, I think it would be great. Here is a direct link to the archive on my website. http://www.ekips.org/comp/inkscape/inx/inkex_latest.tar.gz There are, however, probably a few reasons to hold off. I haven't figured out how to write an inx file that works on Windows and Linux. So as they are the effects only work on Linux. I'm not sure exactly what is required for the scripts to run, at least Python and PyXML. If extensions are by definition optional, you might not want to include them directly. Aaron Spike

9 21

Re: [s4-p18] Re: Mail à destination des développeurs d'Inkscape
by Nicolas Aupetit 23 Apr '05

23 Apr '05

Greetings to all the Inkscape development community ! We are a team of 7 students from a Grande Ecole of engineering in France (Ecole Nationale Supérieure des Télécommunications de Bretagne). As part of a school project, we are to develop a software which converts SVG files to PostScript. After looking for and testing different solutions, we figured out that Inkscape was our favorite to do this job. Nevertheless, Inkscape does not come up to all our expectations. Therefore, we would like to do some improvements which could benefit the whole community of Inkscape users. First of all, we wish to improve the management of fonts in the conversion process. In addition, we intend to add backup for transparency and superimposing in the export to PS (likely the way of Adobe Illustrator). Eventually, if not short of time then, we could focus on enhancing the Inkscape command-line interface (in the idea of processing many files in a row (batch process)). Now, here we go : if anyone around has already worked on these issues, and is ready to communicate with us, so that we might start on a firm and good foundation, we are more ready than ever to listen to everything you've got : information, advice, tips, whatever. You can contact us on the email address : s4-p18@...796... Best regards, -- Nicolas Aupetit, for the svg2ps team from the ENST Bretagne

2 2

[Warning: OT] library to create svg files
by Joakim Hove 22 Apr '05

22 Apr '05

Dear inkscape developers, I have an application, which produce some figures. I have considered using svg (partly to learn), but instead of actually coding the necessary svg strings directly in the source of my application, I would like to employ a somewhat higher level library. I.e. instead of fprintf(svg_stream , "<path id=\"%s\" fill=\"%s\" ....>\n",id,fill_type); I would like to do (using a hypothetical svg library): svg_path(svg_object , id , fill_type); Now, my question is whether Inkscape has (i.e. is built on) a library which somehow provides this functionality; or if you have another library to recommend which would provide this kind of functionality. As you can see from the code snippets above my language of choice(?) is C, so it must be something which can be linked from C. Best Regards Joakim Hove -- Joakim Hove hove AT ift uib no / Tlf: +47 (55 5)8 27 90 / Stabburveien 18 Fax: +47 (55 5)8 94 40 / N-5231 Paradis http://www.ift.uib.no/~hove/ / 55 91 28 18 / 92 68 57 04

3 2

Re: [Inkscape-devel] Extensions Package
by Ted Gould 22 Apr '05

22 Apr '05

Okay, from both Bryce's and Bulia's e-mail I don't think that I was entirely clear. I was only thinking about extensions that are distributed from inkscpae.org, I could definitely see others providing extension packages or collections of their own. (I expect KPT to start shipping Inkscape extensions any time now) I understand Bulia's argument of this being a little too early, I think that if we take that approach we should definitely decided when is mature enough. Release 0.43? When there are 100 extensions? Though, I could definitely see waiting until we have more. So, I guess that's the approach that I'm going to suggest, put everything we have in the Inkscape package today, and we'll split them out at a prespecified time. --Ted On Wed, 2005-04-20 at 14:59 -0300, bulia byak wrote: > (Note that gmail is currently spamblocked by sf lists, so this message > likely won't make it to the list, but Ted and Bryce will see it) > > On 4/20/05, Ted Gould <ted@...11...> wrote: > > We've talked about before, and Aaron and I have recently talked about > > it, should we package extensions? I'd like put some ideas and questions > > forward so that people can rip them apart and we'll end up with > > something good :) > > I'm strongly of the opinion that we must include the extensions we > have so far into Inkscape. Maybe later when there are too many of > them, or when there are some complex or large ones, we may consider > breaking them out. Right now they are just starting to appear, so > including them with the program itself is the only way we can let them > survive. Separating them would pretty much kill them, as few people > will bother downloading them separately. > > > -- Dependencies. The dependency checking in Inkscape will always be a > > toy when compared to dpkg and rpm. And, we don't want to require every > > package in Debian just to install Inkscape. > > This is all irrelevant on Windows which has no dependency checking at > all. It's already difficult to make them work on Windows, by > separating them we'll pretty much make this impossible for an average > user. > > > -- Versioning. It might be more reasonable to have effects on a > > different release schedule if there were a larger collection of authors. > > Something more like OpenClipart's monthly release. > > Few people care about versioning. Most just use whatever version came > with the program. If nothing came with it, well, they will use > nothing. If they DO care, they can always download the freshest > version of the extension they are interested in. > > > -- Modularity. If we ever expect for people to be able to ship > > extensions for Inkscape from outside the project umbrella the tools to > > do so need to be good, and packing some of our own extensions externally > > would force use to make them reasonable. > > It's possible to make these tools good without this. And, as I said, > _right now_ extensions are just too weak and immature to let them go > on their own. > > > -- Simple. Releases are a pain, more releases need to be justified. > > A very important reason - simplicity _for the user_ is a priority. > > > -- Complete Solution. Have you ever seen a public forum where someone > > posts a new program, and then 90% of the questions are "What theme did > > you use in the screenshots?" Multiple places to get extensions means > > that everyone won't have the same set. > > Yes. > > Another reason to package extensions is the Effects menu. If there are > no extensions in the default package, it will either be empty or will > have to be disabled. Both options are bad. > > So as a very minimum, I think we must ship everything we have in the > Windows package (also with Python). But I think the same reasoning > applies to all platforms. >

2 1

Re: [Inkscape-devel] LaTeX Export
by Jose Hevia 22 Apr '05

22 Apr '05

For me,this 'd be essential,given the BAD memory management in kpdf, xpdf, gpdf,I'm looking for something that lets me put simple figures, rectangles, arrows and text ,from latex to generate decent documents, and I want to use Inkscape for that. > Wow, this'll be a handy extension - how are things going with it? > > Bryce > > On Wed, Apr 20, 2005 at 07:54:00AM -0400, Michael Forbes wrote: > > The init.cpp issue was the problem and now it works (not fully, but at > > least I can "Save as"). > > > > -Michael Forbes > > > > On Tue, 19 Apr 2005, Ted Gould wrote: > > > > >On Tue, 2005-04-19 at 20:38 -0400, Michael Forbes wrote: > > >>I am trying to develop a barebones LaTeX export extension. I have wrote > > >>the > > >>code mostly based of the PovRay export and included the .h and cpp file > > >>in > > >>src/extension/internal/Makefile_insert. libinternal.a includes the > > >>extension > > >>but the main program does not. Can anyone help me with this? > > > > > >I guess, what do you mean by the main program not including it? For the > > >internal extensions their init function must be called in init.cpp -- > > >could you not have put that call in? Are you saying that the code isn't > > >getting linked in? > > > > > > --Ted > > > > > >PS - LaTeX export would be pretty cool, neat feature. > > > ------------------------------------------------------- > SF email is sponsored by - The IT Product Guide > Read honest & candid reviews on hundreds of IT Products from real users. > Discover which products truly live up to the hype. Start reading now. > http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click > _______________________________________________ > Inkscape-devel mailing list > Inkscape-devel(a)lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/inkscape-devel >

1 0

Refactoring in action
by Jon A. Cruz 22 Apr '05

22 Apr '05

Just thought I'd toss out this note "Refactoring in action" or "How I implemented an RFE in under an hour" This morning I changed things so that the CMYK color slider mode now has values that range form 0 through 100 instead of 0 through 255. In and of itself that was no big deal, and the ammount of code change needed was minimal. What is interesting, however, are the principles that came into play in doing it. ------------------------ I addressed RFE 994177 "CMYK 0 - 100 not 0 - 255". The first thing was to see if it was needed. Having worked with various media places and artist before, this was a simple one to see the utility of. Not earth-shattering or anything, but something that would make artist and designers working in print a little more comfortable. So, yes, it should be done at some point. Next question was how much effort would it take. Since I'm in the middle of addressing color issues in general, a lot was fresh in my mind. Then looking into the code I saw it was in very good shape, and prime for reuse. So the level of effort needed should be low. Now came the fun part. As I went into the code, it was pretty clean and easy to understand. More importantly, it already was setup to mainly separate the UI presentation from the underlying data model itself. In this case, the sliders would need to change depending on the 'mode'. But... the slider widgets were not played with directly, but instead were attached to instances of GtkAdjustment. It turns out that GtkAdjustment is pretty much a 'model' class to represent ranging data in an abstract way. So... my next step was to look at what needed changing. I first was going to set things up to change the sliders manually when the mode was switched. However, as I moved forward I realized that things were almost clean, and only needed to get set. I just added a 'range limit' member to track which limit the range was using. Now the really good news was that the functionality I needed to hack on was already moved out to a pair of common functions (get1 and set255). And instead of needing to change those to take a parameter, I just needed to make the code respect the limit already a member of the 'model' class being used (GtkAdjustment). I no longer needed to keep a parameter, and so didn't need ot pass it in or have different functions to do different values. I did rename those two, just to make things a little clearer on their use. But that was just a minor tweak to make things easier to read down the road. I did a little find/grep magic to check where things were used and clean them up, but I was done fairly early. Building and testing took up more of the time. Here is a quick summary of the files I changed: src/widgets/sp-color-scales.h 1.8 src/widgets/sp-color-scales.cpp 1.13 src/widgets/sp-color-slider.cpp 1.10 src/widgets/sp-color-wheel-selector.cpp 1.9 sp-color-scales.h: * renamed get1() to getScaled() * renamed set255() to setScaled() * added _rangeLimit (this actually can go away now) sp-color-scales.cpp: * set default range limit * use rangelimit in constructing adjustments * changed get1() and set255() to meet the GtkAdjustment limit instead of hardcoded values * set the range limit when switching modes sp-color-slider.cpp: * only the get1/set255 function renaming sp-color-wheel-selector.cpp: * changed _adjustmentChanged to meet the GtkAdjustment limit instead of a hardcoded value. ======================= Summary: Things went very fast because of a few things: * The code was fairly clean and easy to understand to begin with. * Common functionality was pulled out and centralized into common functions instead of being repeated in-line. (fix it in one place, and it was fixed everywhere) * There was a nice separation of UI and data model. Functional logic dealt with the data model, while the UI was just a slave to it. (in this case there was the RGBA color value and the GtkAdjustment models in play) Those combined to make it quite easy to change the UI without negatively impacting the functionality of Inkscape itself. The more we can allow for this type of refactoring, the better Inkscape can be. So I'd like to encourage everyone to try to keep principles like this in mind. Oh, and a big thanks also goes out to all the developers who were in that code before me.

3 2

Effects Tarball
by unknown＠example.com 22 Apr '05

22 Apr '05

I created a few more effects today. A path randomizer that randomly nudges path nodes and control points within a specified radius. A path segment straightener that straightens bezier path segments in two different ways. And a random tree generator. The tree generator uses a really simple little Turtle class that draws with SVG path data instead of pixels. Very basic but I think it should be enough to make an Inkscape effect out of just about any of those fun little fractal routines done in LOGO. A tarball of effects is available to try out: http://www.ekips.org/comp/inkscape/extending.php Aaron Spike

4 5