On Tue, Jun 16, 2015 at 8:17 PM crazygamer <[email protected]> wrote:
> Thanks Justin for the quick reply.
> I wanted the QListWidgetItems to be editable. Didn't know how to use the
> "setFlags" on the item, so I put each object as a QListWidgetItem, made it
> editable and added to the new list. I realize now it was not a good idea.
> Found another way to do that.
>
> I have replaced this code:
> for obj in load_objs:
> obj = QtGui.QListWidgetItem(obj, parent=self.ui.preview_new_names_list)
> obj.setFlags(QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsSelectable |
> QtCore.Qt.ItemIsEnabled)
> self.ui.preview_new_names_list.addItem(obj)
> self.newList.append(obj)
>
> With this:
> for index in xrange(self.ui.preview_new_names_list.count()):
> item = self.ui.preview_new_names_list.item(index)
> item.setFlags(QtCore.Qt.ItemIsEditable |
> QtCore.Qt.ItemIsEnabled |
> QtCore.Qt.ItemIsSelectable)
>
> It works now. No more stale objects.
>
I think I didn't understand what you had meant by "editable", because I
wasn't sure why you needed to save the items to another list, when you can
just set the flags and then look up the item at any time. And thats what
you ended up switching it to anyways, it looks like. So, cool, glad that
worked out.
>
> There was another train of thought while implementing this. I was trying
> to find out a way to store object info instead of just the text. I'm using
> PyMel. I want to retain the actual object while adding the name to the
> lists. (To avoid duplicate named objects)
> Is there a way I can handle duplicate named objects?
> Can i store the actual object(in this case a pymel transform node) with
> the list and give it a title?
>
> Currently I have it working by making another list which holds the actual
> objects when the objects are loaded in the lists by the "Load Objects"
> button.
> loaded_objs = []
>
> def load_objs():
> selected_objs = pmc.selected()
> objs_to_process = []
> for obj in selected_objs:
> obj_name = _get_short_name(obj)
> objs_to_process.append(obj_name)
> loaded_objs.append(obj)
> controller.objList.emit(objs_to_process)
>
> def custom_rename(old_list, new_list):
> for i in range(len(old_list)):
> obj = pmc.PyNode(loaded_objs[i])
> _do_rename(obj, new_list[i])
>
> The short name of the objects get added to the list while the object is in
> the "loaded_objs" variable.
> (_do_rename is just a proc i made to rename objects with some error
> checking)
> Is there a better way to do this?
>
I would avoid started new lists to manage again, and trying to keep
separate data in sync. You can create your own custom item type to add to
your list if you want. Here is a super quick example of something you could
do:
class MayaItem(QtGui.QListWidgetItem):
USER_TYPE = QtGui.QListWidgetItem.UserType + 1
def __init__(self, mayaItem, parent=None):
super(MayaItem, self).__init__(parent, self.USER_TYPE)
self._mayaItem = mayaItem
def data(self, role):
if role == QtCore.Qt.DisplayRole:
return self._mayaItem.name()
return super(MayaItem, self).data(role)
You can add that to your list and have it store your own object (a pymel
object in this case), and then have the DisplayRole source some piece of
data on the object for the text.
>
> -Harshad
>
> On Tuesday, June 16, 2015 at 4:16:35 AM UTC+5:30, Justin Israel wrote:
>
>> Hey,
>>
>> I'm not clear on why you have to keep your own independent newList of all
>> the QListWidgetItems. Why not just pull them from the list widget as you do
>> for the old ones? Then you can be sure you aren't holding on to stale
>> objects when you want to access the text values.
>>
>> Justin
>>
>>
>> On Tue, Jun 16, 2015 at 10:33 AM crazygamer <[email protected]> wrote:
>>
>>> Hi,
>>> Am writing a renaming tool for maya. Its almost done but Im stuck on a
>>> issue.
>>>
>>> I'm following Rob's book "Practical Maya Programming with Python". So
>>> I'm keeping the Qt(PySide) code seperate from my maya code.
>>>
>>> Here's a quick laydown:
>>>
>>> #The window contains two list widgets (old names, new names) and two
>>> buttons (load objects, rename objects). Old names list is not editable.
>>> # The UI is made with Qt Designer and converted to python using
>>> pysideuic.
>>>
>>> # The way its supposed to work:
>>> 1. Click "Load Objects" button to load selected objects(names) on both
>>> list widgets.
>>> 2. User edits the text on the "new names" list widget.
>>> 3. Click the "Rename Objects" button to rename objects on the "old
>>> names" widget with the naming from the "new names" widget.
>>>
>>> It works the first time. After that, I get this error:
>>>
>>> RuntimeError: Internal C++ object (PySide.QtGui.QListWidgetItem)
>>> already deleted.
>>>
>>>
>>> I create the QListWidgetItem in the loop as I want the "new names" list
>>> to be editable. I can
>>> understand qt/python clearing it as garbage collection. How can I create
>>> the QListWidgetItem properly so it doesn't get cleared on refresh.
>>>
>>> Can someone help me understand and write this efficiently so I can keep
>>> the list editable and
>>> refresh/recreate the QListWidgetItem on each object load. What I've
>>> written is quite crude.
>>>
>>> The ui file(converted to python) is attached with this post.
>>> Here's the extracted code: (It also contains a test function so you can
>>> test-run it with mayapy on a console)
>>> http://pastebin.ubuntu.com/11722053/
>>>
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