[Qt-interest] QtScript: Making QList<QIcon> a scriptable type (like QStringList), how?

[noam.rosenthal at nokia.com]

Hi
You'd have to register it as a sequence (http://doc.qt.nokia.com/4.7/qscriptengine.html#qScriptRegisterSequenceMetaType)
And implement toString for the QIcon prototype (http://doc.qt.nokia.com/4.7/scripting.html#prototype-objects-and-shared-properties).

My advice, familiarize yourself well with those two documents, try some QtScript examples, see how things work... everything is there in the docs :)
No'am
________________________________________
From: ext Wilhelm [wilhelm.meier at fh-kl.de]
Sent: Wednesday, January 19, 2011 6:33 AM
To: Rosenthal Noam (Nokia-MS-Qt/SiliconValley)
Cc: qt-interest at trolltech.com
Subject: Re: [Qt-interest] QtScript: Making QList<QIcon> a scriptable type (like QStringList), how?

Hi Noam,

Am 19.01.2011 10:54, schrieb noam.rosenthal at nokia.com:
> Hi Wilhelm
>
> Try http://doc.qt.nokia.com/4.7/qscriptengine.html#qScriptRegisterMetaType
> You need to let QtScript know how to special case QList<QIcon> or any other custom type.
> The example in that doc should be similar to what you're trying to do.

thanks for that advice! I can now map attributes from QList<> to the
qtscript object, e.g. i can use a length attribute in qtscript. Good!

The next question is how get the list printed or get a an usable
[]-operator, e.g. in qtscript:

iconlist = test.list();
print(iconlist); // should print a textual representation
                 // (as with QStringList)

for(i = 0; i < iconlist.length; i++) { // as with QStringList
   print(iconlist[i]);
}

Do I have to make a wrapper / prototype class with Q_INVOKABLE QString
toString() and Q_INVOKABLE QSize operator[](int) ?



>
> No'am
>
> ________________________________________
> From: qt-interest-bounces+noam.rosenthal=nokia.com at qt.nokia.com [qt-interest-bounces+noam.rosenthal=nokia.com at qt.nokia.com] On Behalf Of ext Wilhelm [wilhelm.meier at fh-kl.de]
> Sent: Wednesday, January 19, 2011 1:38 AM
> To: qt-interest at trolltech.com
> Subject: [Qt-interest] QtScript: Making QList<QIcon> a scriptable type (like QStringList), how?
>
> Hi,
>
> I like to make QList<QIcon> scriptable like QStringList, but I can't
> figure out how to do that.
>
> E.g., I have a
>
> class Test : public QObject {
> ...
>
>   Q_INVOKABLE QStringList list1() {
>     return list(); // returns a QStringlist
>   }
> ...
> };
>
> If I make an instance of this class available in the qtscript-engine as
> say object "test", then I can retrieve the stringlist:
>
> (in qtscript):
>
> sl = test.list1();
> print(sl);
> for(s in sl) {
>   print(sl[s]);
> }
>
> Now I want to do the same with a QList<QIcon> or similar. Say in the
> class Test as above:
>
>   Q_INVOKABLE QList<QIcon> list2() {
>         return QList<QIcon> << QIcon() << QIcon();
>   }
>
> and in qtscript should be possible:
>
> il = test.list2();
> icon = il[0];
> print(icon.width);
>
>
> Well, I experimented and googled, but I can't find the right way.
>
> Any hints?
>
> --
> Wilhelm
>
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> Qt-interest at qt.nokia.com
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--
Wilhelm