Embedded scripting language in Qt application

andre

Qt script was there long before webkit entered Qt :-)

ZapB

It's just that QtScript now happens to use the same JS backend as WebKit. Although this is likely to be replaced with the V8 JS engine in the future.

2beers

[quote author="ZapB" date="1301566923"]It's just that QtScript now happens to use the same JS backend as WebKit. Although this is likely to be replaced with the V8 JS engine in the future.[/quote]

It will be interesting to see how V8 will do. Probably will help a lot with large script files where you need to execute a lot of actions.

ZapB

True. I still try to stick all of the heavy lifting into the exposed C++ objects though. For what I have done so far I have not really had any performance problems with the JS-Core backend. Greater efficiency is always nice though. ;-)

2beers

ok. I've read some of the info in the documentation and some examples I think I made a cleat idea about how to implement this, but I have a new question.

Is there a javascript editor widget that I could implement in my application> I want to be able to change colors, show line numbers , similar to the one that Qt Creator is using??

andre

I have actually seen that around somewhere, yes.

ZapB

I think that somebody on the qt-interest mailing list tried to extract the editor from qt-creator as a stand-alone component earlier this year or late last year. Have a search through the archives to see if you can find it.

2beers

thanks again Andre and ZapB. So far the best thing that I found is this post on qtcentre: http://www.qtcentre.org/threads/25501-QtScript-script-text-editor-for-Qt-4.4.3-with-Syntax-Highlighter?p=121992#post121992

I'll try and search on qt-interest mailing list . Let me know if you find something.

ZapB

This is the "thread":http://lists.qt.nokia.com/pipermail/qt-interest/2010-November/029332.html I was thinking of. I have not tried the attached example, though it looks like it should work if you read the rest of that thread.

For some reason the thread seems to be split in the archives. Just search for "Generic Highlighter" in November 2010 to find all parts.

2beers

[quote author="ZapB" date="1301577716"]This is the "thread":http://lists.qt.nokia.com/pipermail/qt-interest/2010-November/029332.html I was thinking of. I have not tried the attached example, though it looks like it should work if you read the rest of that thread.

For some reason the thread seems to be split in the archives. Just search for "Generic Highlighter" in November 2010 to find all parts.[/quote]

Thanks again. I found something. It gave me a few errors. I will try later and see if I can manage to make it work. For those who are interested in the source code can be found in

@qt-creator/src/plugins/texteditor/generichighlighter@

tobias.hunger

2beers: You most likely want the QMLJSEditor code (in src/plugins/qmljseditor/), not the generic highlighter one... the first actually parses QML and Javascript while the latter does regexp matching only.

ZapB

Cool thanks for that Tobias. That will come in handy.