[Qt-qml] How to extend QML TextEdit (QDeclarativeTextEdit)?

[Cornelius Hald]

Gregory, thanks for the detailed explanation!

I think I have to go with option 2 and include the private headers.
Composition is not enough, because I need access to non-public members
of TextEdit.

Also I've tried option 3 already. Basically it works, but the
integration with QML is not that great.

Basically I'm trying to do text editing like the 'Notes' application on
Harmattan. As far as I can tell they are still using MTextEdit from MTF
which already is deprecated.

Thanks!
Conny


On Fri, 2011-07-15 at 12:55 -0700, Gregory Schlomoff wrote:
> Depending on what you're trying to achieve you could either:
> 
> Option 1 - Create a QDeclarativeItem that takes a TextEdit as a
> property, and interact with it from your cpp code with getProperty /
> setProperty:
> 
> MyTextEdit {
>   textEdit: TextEdit {}
> }
> 
> In your cpp code:
> 
> class MyTextEdit : public QDeclarativeItem
> {
>   Q_PROPERTY(QDeclarativeItem* textEdit ... )
> }
> 
> Then you can use get / set property to interact with the text edit.
> Basically, you'd be using composition instead of inheritance, which
> generally is a a Good Thing, but sometime doesn't allow you to do what
> you want.
> 
> Option 2. Include the private header nonetheless. If you're linking to
> Qt statically, or if you are distributing the library alongside with
> your executable (this is the norm on Windows and Mac), then you
> probably don't mind that much linking to a private header. You'll just
> have to accept the fact that your code may not compile with newer
> versions of Qt, and that you'll have to fix that by hand.
> 
> Option 3. Get rid of QDeclarativeTextEdit, and try to embed a
> QTextEdit through a QGraphicsProxyWidget. It usually doesn't work that
> well. Not recommended.
> 
> 
> 
> On Fri, Jul 15, 2011 at 12:26 PM, Cornelius Hald <hald at icandy.de> wrote:
> > Hi,
> >
> > I'd like to extend the TextEdit item in QML. The C++ code is in
> > qdeclarativetextedit.cpp but the problem is that I can't find any public
> > headers - only private ones.
> >
> > Originally I thought I'll create a sub-class, but it would also be ok to
> > do it differently. Does anyone have an idea?
> >
> > Thanks!
> > Conny
> >
> >
> >
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> 
> 
>