October 2007 - Inkscape Devel

How are selected nodes passed to Inkscape Extension Scripts
by Redefined Horizons 16 Oct '07

16 Oct '07

I was reading over the Scripting HOWTO for Inkscape in an attempt to discover how selected nodes are identified and/or passed to extension scripts by Inkscape. (I was thinking that I might be able to identify and fix a possible bug in the inkex.py file, or maybe see if I could get a Beanshell script to work.) However, after reading over the documentation and the man page for Inkscape, I can't figure out how selected nodes are passed to the scripts. I have examined selected objects in Inkscape's XML editor, and selection information does not appear to be stored in the actual SVG information. So I'm guessing the selected nodes are passed as a parameter? Is this true? If so, what is the name of the parameter and how are the selected nodes represented? If it is not true, are the selected nodes identified in the temporary SVG script some how? I hope I'm not being a pest with my questions. Thank you for the help. Landon

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Problem with getselected method in inkex.py
by Redefined Horizons 16 Oct '07

16 Oct '07

I was trying to write a little extension script that printed the id of all selected paths in an Inkscape document. I seem to have hit a snag. I think there may be a bug in inkex.py, or I am not using it correctly. (The latter is more likely.) Here is the stack trace I get when I try to run my script: Traceback (most recent call last): File "/usr/share/inkscape/extensions/printPathIds.py", line 46, in ? effect.effect() File "/usr/share/inkscape/extensions/printPathIds.py", line 25, in effect self.getselected() File "/usr/share/inkscape/extensions/inkex.py", line 139, in getselected for id in self.options.ids: AttributeError: 'NoneType' object has no attribute 'ids' It seems like the error is indicating that there is nothing selected in Inkscape when the script is run. (I think that is what it means when it says 'NoneType' object has no attribute 'ids'.) However, I do have paths selected in Inkscape when I try to run the script. Do you guys have any suggestions on how I can correct the error? Thanks for all the help. Scott Huey P.S. - I have attached a copy of the Inkscape extension script that generates the error message.

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No more PHP 4
by Aaron Spike 15 Oct '07

15 Oct '07

Php4 has been removed from the Inkscape VM. Please report any problems with any Inkscape websites as soon as possible so that we can fix them. Thanks, Aaron Spike

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Inkscape House plan wish list
by Donn 14 Oct '07

14 Oct '07

Inkscape wishlist - October 2007 Curr. version 1.45.1 on Kubuntu Dapper Drake. Please forgive the intrusion, perhaps this will be of use to someone and maybe it'll spark a thread of ideas. (Is there a more appropriate place to submit wish-lists?) I have recently been designing our house using inkscape to do the top-view plan. I have found it far more flexible than the only other option, Qcad. While I have enjoyed the use of layers and clones, there are several down- sides that I thought I'd list in the form of wishes for the future. I am sure there are ways to do these things, and misconceptions on my part, it's just the way I came-at the thing. THE LIST 1. Rotate entire page - the plan is designed square, but the house is seated at an angle. Nice to be able to see the house angled, but continue to design square. 2. Clones break when you move them to new layers. If you cut/paste them, or just shift pgup/pgdown them, all clones become groups. 3. It would be super if "symbols" (original groups that are used as clones) could be kept in a separate .svg file and referred-to within other svg files. That way, the symbols don't have to be *in* every file that uses those clones. 4. Measurements: If there were at least a ruler tool that could be measured in length (at any angle) rather than the width/height of it's bounding square, it would really help in designing accurately when things don't remain square. Better yet, a way to get the length of a section of an element - perhaps by selecting nodes and having it show the lengths in a readout somewhere. Or, when you draw a line it could show the length along with the other usual info. 5. A tool to measure that draws lines with arrow ends and includes a label which you can control to display units as you need. For example, I used 10 px = 1 m on my drawing. So I would like to see measurement lines saying: <--- 10m ---> That would mean I get to enter a conversion formula somewhere so that it prints the correct value and unit. 6. A label near the W/H display which auto-calculates the area of a thing; at least for rectangles and three node shapes. More complex shapes would be good. 7. A tool whereby you can draw a path and have it calculate the area under it, with a pull-out label showing the area (again with unit and conversion properties). 7.5 (I just remembered) It would be nifty if a kind of "spreadsheetyness" could infiltrate Inkscape. For example, I often wanted to add a list of areas (that I manually calculated and noted as text objects here and there) together and display a total area in a text object on another layer. If that could be automated by variables and formula... Just imagine! 8. A way to group objects *across* multiple layers: I wanted to clone my entire plan which has many layers (one for lights, one for doors, one for walls, etc.) so that I could rotate it to face North-East. I wanted to be able to work within the original group and have the clone reflect the changes in scale, shape and movement I make. But as soon as I group my plan, all the layers snap to one layer. 9. Node aligning: 1) Align to bottom/top/left/right as opposed to an average align to the middle of all the nodes selected. 2) Select more than one object and select nodes across them and align. Great for lining walls up when they are not one path. 10. A way to export the selected item(s) out to an svg file. I find that copy/paste between Inkscape instances on Kubuntu just plain does not work. So I end up making "cut.svg" files with one item in it so I can import that to the next file. Boring really. So being able to pull something out of a busy file and send it to a file would speed that. 11. Layers: For both lock and visible; a way to on/off all at once, also a way to affect the "others" - for example: "hide all other layers". 12. Layers: A way to view a particular layer as an outline while the others show fills etc. 13. Layers: A way to have guides on a per-layer basis. I often wanted guides for the walls and different guides for sundry things and there are just too many guides to use properly. I suppose I could draw lines on a layer and snap to them, but it's not the same as guides. 14. Dialogues: It would be super if one could close a dialogue by hitting ESC. That's my list. I've prob. forgotten some. Many of these things should not be an SVG version clash -- they are something Inkscape could do in the background to make life easier. (Except, perhaps, wish 7.5) \d

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nodepath.cpp compile failure with gcc3 - more info
by John Faith 13 Oct '07

13 Oct '07

Hello, I did more digging into the gcc3 compile failure in nodepath.cpp and I think I found the source of the problem. nodepath.cpp includes 2geom/path.h (via live_effects/effect.h via live_effects/lpeobject.h) which defines the class Path in the namespace Geom. livarot/livarot-forward.h declares 'class Path', without a namespace. This seems to cause gcc3 confusion. Possibly this is the problem mentioned in the comment in nodepath.cpp: "/// evil evil evil. FIXME: conflict of two different Path classes!" ? Has anyone thought about a fix to this before? It seems like a possible solution would be to add a namespace around the Path class in livarot or to rename one of the classes, but I'm not sure what the ripple effect would be. I tried adding "Geom::" or "::" to Path in a couple places, but it didn't seem to work. Thanks, John

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Re: [Inkscape-devel] Inkscape-devel Digest, Vol 17, Issue 26
by Tony Vigil 13 Oct '07

13 Oct '07

From: staff-gmail <john.staff2222@...400...> Subject: Re: [Inkscape-devel] Inkscape House plan wish list As an engineer, I like Inkscape because it is NOT like CAD (I like the simplicity and free form nature), though I do enjoy some of the newer features that bring Visio and Sketchup type abilities. However, some of the things you are looking for are possible (see below) and you are welcome and encouraged to contribute patches for anything else you would like. Some things could be done with the python extension script capabilities. Donn wrote: > 1. Rotate entire page - the plan is designed square, but the house is seated > at an angle. Nice to be able to see the house angled, but continue to design > square. > Have you tried selecting all the objects, grouping and then rotating ? I think what he really wants is to have the entire coordinate system rotated... not just the graphics. > 3. It would be super if "symbols" (original groups that are used as clones) > could be kept in a separate .svg file and referred-to within other svg files. > That way, the symbols don't have to be *in* every file that uses those > clones. > then you start to have file dependency hell. I do keep a separate file for my favorite symbols/drawn objects which I copy into various drawings. I want them to be a pure copy so I can modify them any way I want in that particular drawing. File dependency is not an entirely bad thing. Being able to modify a graphical widget in one file and have instances of the widget updated in many files can be very useful. It would be a cool option to be able to save dependencies... but I wouldn't want it to be the default. > 4. Measurements: If there were at least a ruler tool that could be measured in > length (at any angle) rather than the width/height of it's bounding square, > it would really help in designing accurately when things don't remain square. > Better yet, a way to get the length of a section of an element - perhaps by > selecting nodes and having it show the lengths in a readout somewhere. > Or, when you draw a line it could show the length along with the other > usual info. > > yes, a ruler tool would be nice, in fact, the whole SVG unit transformation specifications could use some work - feel free to contribute some ideas on this. The Measure Path effect can already do measurement at any angle. What seems to be missing is some code that updates the measurement text when the measured path is modified. > 7.5 (I just remembered) It would be nifty if a kind of "spreadsheetyness" > could infiltrate Inkscape. For example, I often wanted to add a list of areas > (that I manually calculated and noted as text objects here and there) > together and display a total area in a text object on another layer. If that > could be automated by variables and formula... Just imagine! Sounds like a great Inkcape offshoot project... CADscape! I'd certainly give it a go when I needed to do some CAD work if somebody wanted to create it... but I would hate it if Inkscape became too much like other CAD tools. > 10. A way to export the selected item(s) out to an svg file. I find that > copy/paste between Inkscape instances on Kubuntu just plain does not work. So > I end up making "cut.svg" files with one item in it so I can import that to > the next file. Boring really. So being able to pull something out of a busy > file and send it to a file would speed that. > Cut and paste between files does work - you just have to open the 2nd file from within the first file Sending selected objects to a new file isn't all that difficult or complicated. Select your objects > CTRL/C > CTRL/N > CTRL/V. Presto... all selected objects are now exported to a new document.

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chain icon/caption
by Alexandre Prokoudine 13 Oct '07

13 Oct '07

Hi, Currently in Filter Effects dialog "Link" caption is used for cases when two values should be changed together. Should we probably switch to traditional chain icons already used in GIMP, Scribus and other well known applications? Alexandre

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Re: [Inkscape-devel] [Inkscape-user] Losing colours when copying
by Michael Wybrow 13 Oct '07

13 Oct '07

On 11/10/2007, at 10:22 AM, greg fenton wrote: > I am using some images from openclipart. > > I am trying to copy two different balloons (clipart/recreation/ > party/balloon-red-aj.svg and balloon-blue-aj.svg) into a single new > image. > > I first copy -red and paste into the new image and all is good. > When I copy -blue and paste into the new image, it is pasted also > as red (not blue). Nothing I seem to do will copy the image over > as blue. > > If I create a second new image and paste just the blue, it copies > over as blue. If I then copy red and paste, it pastes as blue. > > Any suggestions as to how I can get the copy to happen? Just a guess... I had an SVG file where some of the colour were defined using CSS as a top-level style tag. When they were opened in Inkscape they displayed fine, but those colour came out wrong when copied to a new file since I guess the CSS values were not copied across. I was able to paste it to the other file with correct colours by: 1) Open the file in Inkscape 2) Select the relevant objects and copy 3) Paste them within the same document 4) Copy the newly pasted selection 5) Paste that into the new document These steps don't work with you balloon example. Your problem looks similar but with gradients instead of CSS, probably because the gradients are named the same in different coloured balloon images, so the pasted blue balloon just references the red balloons gradients in the pasted version since they are named the same. I'm not sure if this should be considered a bug or not (multiple pasted balloons use the same gradients). CC'ing to the developers list to see what people think about this, and whether there is any kind of hidden option to get the behaviour you want. Cheers, Michael

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print and print direct
by bulia byak 12 Oct '07

12 Oct '07

Does anyone has a slightest idea, or even a suggestion, of why we have these two commands on Windows but not on Linux? What is the difference? This was recently discussed in this bug: https://sourceforge.net/tracker/?func=detail&atid=604306&aid=979164&group_i… whose findings can be summarized as follows: - Linux has the single Print command, it offers a choice between PS/bitmap printing, and it works (at least the PS printing works, I didn't test bitmap printing much). - Windows has "Print" and "Print Direct". The former works but offers no PS/bitmap switch, and works only as a bitmap. The latter offers the switch but does not work :) I think it's high time to do something about this mess. -- bulia byak Inkscape. Draw Freely. http://www.inkscape.org

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Error on "config" script?
by Aurélio A. Heckert 12 Oct '07

12 Oct '07

I have some compile problems, and Bulia say me that i need to upgrade mu libGTK. see: http://sourceforge.net/tracker/index.php?func=detail&aid=1812357&group_id=9… So... the config script must test the libGTK version, don't need? Thanks guis! :-) Aurium -- -===================================================- . . Aurélio A. Heckert [ GNU/Linux ] / \ http://www.aurium.cjb.net ((__-^^-,-^^-__)) `-_---" "---_-´ Ilustração Vetorial Livre: `--|o` ´o|--´ http://InkscapeBrasil.org \ ' / Projeto Software Livre - Bahia: ): :( http://psl-ba.softwarelivre.org (o_o) Coop. de Tecnologias Livres: "-" http://www.colivre.coop.br ------------------------------------------------- GNU/Linux User #312507 http://counter.li.org - - - - - - - - - - - - - - - - - - - - - - - - - ( ( ( http://www.midiaindependente.org ) ) ) -===================================================- "Se conhecimento é poder, que país governado por industriais dará a verdadeira educação? Cuidado com o feedback da miséria!" Tet Ramon "Eu temo pela minha espécie quando penso que Deus é justo." Thomas Jefferson

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