Would it be OK to have a reference to 'internalPointer' within the model and return the result when the data method is called with the custom role?
I hope that I'm not missing anything obvious Dave -- David Martinez - Technical Animator Email: [email protected] Website: http://www.elusiveideas.com On Mon, Jun 16, 2014 at 10:25 AM, David Martinez < [email protected]> wrote: > Looking at your example, I have a couple of questions: > > > - Are you using the role to return a reference to your object or > returning the data that you were trying to retrieve from it? If you are > doing the second thing, are you creating a series of user roles that return > a few different values from the model? Is there a good reason to do one > thing or the other? > > - Also, could you explain what do you mean by 'resolving' the object? > > > The way I see it, returning a reference to the object would allow me to do > as many operations as I need with it without having to call the data method > on the model each time. > > Thanks in advance > > > -- > David Martinez - Technical Animator > > Email: [email protected] > Website: http://www.elusiveideas.com > > > > > On Mon, Jun 16, 2014 at 10:08 AM, David Martinez < > [email protected]> wrote: > >> That makes sense! Thanks Justin! >> >> I will do the appropriate changes on my code so it does not use >> internalPointer anymore. I'll take it that 'QtCore.Qt.UserRole' returns the >> first index for custom roles and that I can create as many of them as I >> need, right? >> >> >> >> -- >> David Martinez - Technical Animator >> >> Email: [email protected] >> Website: http://www.elusiveideas.com >> >> >> >> >> On Fri, Jun 13, 2014 at 9:20 PM, Justin Israel <[email protected]> >> wrote: >> >>> >>> On Jun 14, 2014 8:17 AM, "Justin Israel" <[email protected]> wrote: >>> > >>> > Also Erkan, I think your answer was meant for a QTreeWidget where you >>> are dealing with converting between indexes and model items. >>> > >>> >>> Correction. I should have said a QTreeView in combination with >>> QStandardItemModel subclasses where it deals with items in the model. >>> QAbstractItemModel is index like the view. >>> >>> > On Jun 14, 2014 12:57 AM, "Marcus Ottosson" <[email protected]> >>> wrote: >>> >> >>> >> It's my pleasure, Erkan. I'm glad you like it. >>> >> >>> >> >>> >> On 13 June 2014 13:18, Erkan Özgür Yılmaz <[email protected]> wrote: >>> >>> >>> >>> Thanks a lot for sharing this, it is a great source and a great >>> example to the tons of things that I've to learn from you guys. >>> >>> >>> >>> Ozgur >>> >>> eoyilmaz.blogspot.com >>> >>> >>> >>> On Jun 13, 2014 3:11 PM, "Marcus Ottosson" <[email protected]> >>> wrote: >>> >>>> >>> >>>> To run it with PyQt4/PySide, you can import QtGui instead of >>> QtWidgets, and do a string-replace of all occurrences. There isn't anything >>> unique to PyQt5 in these examples, they should be backwards compatible. (if >>> not, let me know!. And finally, PySide has the Signal class instead of the >>> pyqtSignal of PyQt. >>> >>>> >>> >>>> Best, >>> >>>> Marcus >>> >>>> >>> >>>> >>> >>>> On 13 June 2014 13:08, David Martinez < >>> [email protected]> wrote: >>> >>>>> >>> >>>>> Thanks a lot Marcus! I will definitely take a look. :-) >>> >>>>> >>> >>>>> >>> >>>>> -- >>> >>>>> David Martinez - Technical Animator >>> >>>>> >>> >>>>> Email: [email protected] >>> >>>>> Website: http://www.elusiveideas.com >>> >>>>> >>> >>>>> >>> >>>>> >>> >>>>> >>> >>>>> On Fri, Jun 13, 2014 at 1:05 PM, Marcus Ottosson < >>> [email protected]> wrote: >>> >>>>>> >>> >>>>>> If you're interested in MVC in general, I just finished up on an >>> example of implementing MVC in Python, using Qt and it's QEvent and >>> pyqtSignal frameworks, a custom Controller and two custom Views. >>> >>>>>> >>> >>>>>> Maybe it could be useful in your exploration. :) >>> >>>>>> >>> >>>>>> https://github.com/abstractfactory/labs/tree/master/python/mvc >>> >>>>>> >>> >>>>>> Best, >>> >>>>>> Marcus >>> >>>>>> >>> >>>>>> >>> >>>>>> On 13 June 2014 12:51, Marcus Ottosson <[email protected]> >>> wrote: >>> >>>>>>> >>> >>>>>>> Glad to hear you got it working. :) >>> >>>>>>> >>> >>>>>>> >>> >>>>>>> On 13 June 2014 12:11, David Martinez < >>> [email protected]> wrote: >>> >>>>>>>> >>> >>>>>>>> It's working now! Thanks a lot! >>> >>>>>>>> >>> >>>>>>>> Since I'm going through the proxy model, I had to use the >>> 'mapToSource' method instead of the itemFromIndex. >>> >>>>>>>> The final code looks like this: >>> >>>>>>>> >>> >>>>>>>> global_position = self.uiTree.mapToGlobal(pos) >>> >>>>>>>> index = self.uiTree.indexAt(pos) >>> >>>>>>>> proxyModel = self.uiTree.model() >>> >>>>>>>> item = proxyModel.mapToSource(index) >>> >>>>>>>> >>> >>>>>>>> node = item.internalPointer() >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> -- >>> >>>>>>>> David Martinez - Technical Animator >>> >>>>>>>> >>> >>>>>>>> Email: [email protected] >>> >>>>>>>> Website: http://www.elusiveideas.com >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> On Fri, Jun 13, 2014 at 11:57 AM, Marcus Ottosson < >>> [email protected]> wrote: >>> >>>>>>>>> >>> >>>>>>>>> Looks like Erkan beat me to it. :) >>> >>>>>>>>> >>> >>>>>>>>> >>> >>>>>>>>> On 13 June 2014 11:57, Marcus Ottosson <[email protected]> >>> wrote: >>> >>>>>>>>>> >>> >>>>>>>>>> The item you're getting is indeed from the proxy model. >>> You'll have to get it, and then map it to the original. >>> >>>>>>>>>> >>> http://qt-project.org/doc/qt-4.8/qabstractproxymodel.html#mapToSource >>> >>>>>>>>>> >>> >>>>>>>>>> >>> >>>>>>>>>> On 13 June 2014 11:40, David Martinez < >>> [email protected]> wrote: >>> >>>>>>>>>>> >>> >>>>>>>>>>> Hi, >>> >>>>>>>>>>> >>> >>>>>>>>>>> I've been experimenting with Model View Programming and so >>> far, I've been able to create a QTreeView which displays the data of my >>> custom model (Inheriting from 'QtCore.QAbstractItemModel'). I created my >>> own custom kind of object to use within the model (as I'm storing some data >>> about the items being stored). I use the 'internalPointer' method in the >>> model to get a reference to my original object if I need it. I also have a >>> 'QtGui.QSortFilterProxyModel' between the view and the model which allows >>> me to filter and sort the results. >>> >>>>>>>>>>> >>> >>>>>>>>>>> Everything seems to be working as expected but I'm >>> struggling to get something working. I want to be able to right click an >>> item on the treeView and get a popup menu which contains information about >>> the specific item. >>> >>>>>>>>>>> >>> >>>>>>>>>>> That means that I'm interested on the 'QModelI' value in the >>> 'Model' for the element selected in the 'QTreeView' so I can retrieve the >>> original node using 'internalPointer' and get the information that I need. >>> >>>>>>>>>>> >>> >>>>>>>>>>> I'm not sure how to get the index in the original 'model' >>> though. I have tried to use the 'indexAt(QPos)' method of the treeView but >>> I guess that this is returning the index that it has within the view and >>> not the model. >>> >>>>>>>>>>> >>> >>>>>>>>>>> I'm not sure if I would need something like a >>> 'selectionModel'. I started to try that but I think that it would give me >>> the index of the 'QSortFilterProxyMode' instead of the one of >>> 'QAbstractItemModel'. >>> >>>>>>>>>>> >>> >>>>>>>>>>> Is there anything obvious that I'm missing? >>> >>>>>>>>>>> >>> >>>>>>>>>>> >>> >>>>>>>>>>> Thanks in advance, >>> >>>>>>>>>>> >>> >>>>>>>>>>> >>> >>>>>>>>>>> >>> >>>>>>>>>>> -- >>> >>>>>>>>>>> David Martinez - Technical Animator >>> >>>>>>>>>>> >>> >>>>>>>>>>> Email: [email protected] >>> >>>>>>>>>>> Website: http://www.elusiveideas.com >>> >>>>>>>>>>> >>> >>>>>>>>>>> >>> >>>>>>>>>>> -- >>> >>>>>>>>>>> You received this message because you are subscribed to the >>> Google Groups "Python Programming for Autodesk Maya" group. >>> >>>>>>>>>>> To unsubscribe from this group and stop receiving emails >>> from it, send an email to >>> [email protected]. >>> >>>>>>>>>>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CAMLeNpwXVJS7Ko5_XUf3cTRML%2BpXBjt8h1Pm2EXz03HQaobR3Q%40mail.gmail.com >>> . >>> >>>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>> >>>>>>>>>> >>> >>>>>>>>>> >>> >>>>>>>>>> >>> >>>>>>>>>> >>> >>>>>>>>>> -- >>> >>>>>>>>>> Marcus Ottosson >>> >>>>>>>>>> [email protected] >>> >>>>>>>>> >>> >>>>>>>>> >>> >>>>>>>>> >>> >>>>>>>>> >>> >>>>>>>>> -- >>> >>>>>>>>> Marcus Ottosson >>> >>>>>>>>> [email protected] >>> >>>>>>>>> >>> >>>>>>>>> -- >>> >>>>>>>>> You received this message because you are subscribed to the >>> Google Groups "Python Programming for Autodesk Maya" group. >>> >>>>>>>>> To unsubscribe from this group and stop receiving emails from >>> it, send an email to [email protected]. >>> >>>>>>>>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOBL-ctm%3DZORqzDk%2B0L4tJmfDr_D7yQ4E-U%3DWVdePWMGqA%40mail.gmail.com >>> . >>> >>>>>>>>> >>> >>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>> >>>>>>>> >>> >>>>>>>> >>> >>>>>>>> -- >>> >>>>>>>> You received this message because you are subscribed to the >>> Google Groups "Python Programming for Autodesk Maya" group. >>> >>>>>>>> To unsubscribe from this group and stop receiving emails from >>> it, send an email to [email protected]. >>> >>>>>>>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CAMLeNpy7kocGrZXRSNhYfqUASVTwnHzm6FZmAQK4TLpUyrL66g%40mail.gmail.com >>> . >>> >>>>>>>> >>> >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>> >>>>>>> >>> >>>>>>> >>> >>>>>>> >>> >>>>>>> >>> >>>>>>> -- >>> >>>>>>> Marcus Ottosson >>> >>>>>>> [email protected] >>> >>>>>> >>> >>>>>> >>> >>>>>> >>> >>>>>> >>> >>>>>> -- >>> >>>>>> Marcus Ottosson >>> >>>>>> [email protected] >>> >>>>>> >>> >>>>>> -- >>> >>>>>> You received this message because you are subscribed to the >>> Google Groups "Python Programming for 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>>>> -- >>> >>>> Marcus Ottosson >>> >>>> [email protected] >>> >>>> >>> >>>> -- >>> >>>> You received this message because you are subscribed to the Google >>> Groups "Python Programming for Autodesk Maya" group. >>> >>>> To unsubscribe from this group and stop receiving emails from it, >>> send an email to [email protected]. >>> >>>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/python_inside_maya/CAFRtmOCz3jDmqvV4kGYJ01XCFxVyA-edh-3ibT8rGWxNPAB%2BQA%40mail.gmail.com >>> . >>> >>>> >>> >>>> For more options, visit https://groups.google.com/d/optout. >>> >>> >>> >>> -- >>> >>> You received this message because you are subscribed to the Google >>> Groups "Python Programming for Autodesk Maya" group. >>> >>> To unsubscribe from this group and stop receiving emails from it, >>> send an email to [email protected]. >>> >>> To view this discussion on the web visit >>> 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