We have used Lua as an embedded scripting language. It is very lightweight, cross platform and easy to integrate with C/C++. The language grew out of the need for "smarter" configuration files which it sounds like is what you want. It isn't part of Qt but we have had a very good experience using it with Qt. Most people embed the Lua interpreter in their software so that the user doesn't have to have anything installed on their system. On Windows the compiled lua interpreter plus standard libraries are less than 250K.
One great feature that Lua has that you don't get in Javascript is co-routines. You can write run your Lua code as a co-routine and have it yield back to C++ so Qt can run its event loop and resume the Lua code on certain events. This lets you write Lua code that looks like straight-line code even though it runs inside an event based system. Josh -----Original Message----- From: interest-bounces+jhandley=lkc....@qt-project.org [mailto:interest-bounces+jhandley=lkc....@qt-project.org] On Behalf Of Michael Jackson Sent: Wednesday, March 12, 2014 2:06 PM To: <interest@qt-project.org> Subject: [Interest] Adding Scripting Capabilities to my Application (Suggestions on how to get started) Hello Qt Community. I help develop a combination of library/application (dream3d.bluequartz.net) and we would like to add some scripting capabilities to it. I'll state what I _think_ I want and hopefully get a sanity check as to whether it is really possible or not. Our project as a main Application that is GUI based and is the user facing portion. It allows the user to setup a Pipeline of "filters" to be run on a set of data. We have separated the "View" parts from the "model" parts and so we can actually execute a pipeline from the command line by feeding it a special .ini file that describes the inputs for each filter in sequence. What I think we would like to add is the ability to write "script" file that allows more than just running the filters in sequence but would also add all the basic language features such as loops and conditionals. So I am envisioning someone writing something like a JavaScript file that would be executed. The script file would contain all the logic to drive a pipeline or multiple pipelines or variations on a pipeline or something like that. Basically, a way to hook together our filters but NOT have to do a full blown compile of the codes. I took a look at QML, QtScript and something else but I am really jus t getting confused at this point. It was suggested to wrap all of our classes in Python or Java or Ruby. I was really hoping to be able to utilize something built into Qt (Qt4 currently but we are working to move to Qt5) so that I didn't have to ensure the user has the proper scripting language installed on their systems (OS X, Linux & Windows). So I would sincerely appreciate any suggestions or personal experiences from the Qt community about how to proceed or where to look for more examples. Thanks -- Mike Jackson http://dream3d.bluequartz.net :::::::::: http://www.github.com/dream3d/DREAM3D _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
