I'm looking for a diagramming components for Lazarus, to draw circles, rectangles, and connectors between them that are resized or moved when the components are moved. This would be used to create graph editors, for example for designing dynamic models.

Do you have ideas about a <mature> component I could use for this purpose? I've been thinking about using GLScene as a 2D layer, but it seems to be overkill for my purpose (although 3D diagrams... hum.)

Best regards,
Thierry

I'm interested in that too.

Mattias

I've got SmartDraw <http://www.smartdraw.com> for drawing such diagrams, years ago. But I'm not sure about programmatical access to the drawings.

Should we start a new project?

DoDi

If GPL is an option, ESS-Model may be of some use: http://essmodel.sourceforge.net/

Best regards,
Fl?vio

Hello Fl?vio,

I would hope to have rather a Lazarus-compatible license such as LGPL or Mozilla. Pure GPL for a component is, in my case, somewhat of an issue. I would happily give the work to improve the drawing component, but not necessarily the science that the component represents.

Thanks for the link in any case. Essmodel is, indeed, very interesting.

Thierry

Hi,

I wrote circle, rectangle and decision symbols, all three components are so premature. I was start last year but i'm busy with another projects. If anybody want to develop i can upload on to a web site.

Best Regads,

M.Ali VARDAR

There is the following components (for Delphi, but I think it can be converted): http://angusj.com/delphi/

It's freeware with source, so maybe we shoudl contact the developer if it will be converted to lazarus.

Ido

This one too is freeware and might make a good candidate to port assuming you could get permission from the author. Great component btw.

There's also this (Delphi Freeware)

http://meesoft.logicnet.dk/DiagramDesigner/

theo wrote

There's also this (Delphi Freeware) http://meesoft.logicnet.dk/DiagramDesigner/

LOL! Teach me to actually look at the link before I post.

The one that I posted is the official website if that matters any...

Forgot the link:

http://www.delphiarea.com/products/delphi-components/simplegraph/

Both SimpleGraph and DiagramDesigner look promising!

- SimpleGraph seems easier to understand, and the license is very simple: the original author is not responsible, please mail him the sources changes, and keep his name as original author,
- DiagramDesigner has another license: no responsible, but also no changes allowed. So we must ask permission for any changes.

I suggest the next step is to ask both authors if they are willing to port these tools to Lazarus, first as a Windows port, then as a multi-OS port, or willing to let US do the porting, and if they are willing to use a recognized license scheme such as Lazarus'.

Best regards,
Thierry

-

try StarULM (made with delphi?)

http://staruml.sourceforge.net/en/

Alex Kovacic(PTC,HPTC,MHGSA,BSc,MSc)
SENIOR SCIENTICT,
FISH Lab
CYTOGENETICS UNIT,
SEALS,Level 4, Campus Centre,
Prince Of Wales Hospital,
RANDWICK, NSW, 2031,
AUSTRALIA,
Tel: (61) (02) 9382 9168
Fax: (61) (02) 9382 9157
email1:
email2:

Yes, I know about StarUML, it's a good tool, but it's dead: little work has been done since 2005. And the code base is so huge, it seems daunting to port the code base to Lazarus as is.

What license is it delivered with?

BR
Thierry

Thierry Coq wrote

Yes, I know about StarUML, it's a good tool, but it's dead: little work has been done since 2005. And the code base is so huge, it seems daunting to port the code base to Lazarus as is.

It looks good, but it seems to use a lot of third party components, some commercial like devexpress or programmar, some not ported to FPC like JVCL.

Regards,

Gerard.

-

GNU General Public License (GPL)

There is a fork of of StarUML project - called SunULM

http://sunuml.wiki.sourceforge.net/

here is the discussion on creating the new fork..? looks like they are using PYTHON?

http://sourceforge.net/forum/forum.php?thread_id=1995257&forum_id=510443

hope this helps.....

purpose?

Alex Kovacic(PTC,HPTC,MHGSA,BSc,MSc)
SENIOR SCIENTICT,
FISH Lab
CYTOGENETICS UNIT,
SEALS,Level 4, Campus Centre,
Prince Of Wales Hospital,
RANDWICK, NSW, 2031,
AUSTRALIA,
Tel: (61) (02) 9382 9168
Fax: (61) (02) 9382 9157
email1:
email2:

Hello,

Thanks for the links. Obviously, Python is not <our> answer!!! However, it does mean people feel free to port the code.

The next questions:
- How many people would be interested in porting StarUML to Lazarus? We probably would need several people to do the port, probably at first to Lazarus/Windows, then to other OSes
- Would the Lazarus project care to host a porting project like this one?

BR
Thierry

Selon Alex Kovacic :

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I think it is wiser to get going first, and do some form of feasability research.

When it starts rolling, it only gets interesting to search for hosting.

Depends on how heavily it depends on those components. I quickly had a look and it uses a proprietary parsergenerator and proprietary GUI. If you can't recycle both parser and gui, then what can you recycle?

Afaik you can't even legally build that project without having all components licensed. Toolbar2000 is GPL when used in the free edition, JCL/JVCL is MPL which is GPL incompatible.

Note that all this doesn't make it impossible, but it will be very non-trivial.