Re: [Maya-Python] PyQt Model/View not showing in Maya

2016-09-19 Thread Alok Gandhi 
Instead of commenting out, you can check for existence of an application
instance.

def run():
app = QtGui.QApplication.instance()
createNew = app is None

if createNew:
app = QtGui.QApplication(sys.argv)

win = BasicDialog()
win.show()
if createNew:
sys.exit(app.exec_())
if __name__ == '__main__':
run()



On Tue, Sep 20, 2016 at 8:30 AM, Justin Israel 
wrote:

>
>
> On Tue, Sep 20, 2016 at 12:20 PM likage  wrote:
>
>> @Justin, thanks for getting back to me.
>> So, I did a rewrite, however as long as I did not comment out both the
>> 'app = QtGui.QApplication(sys.argv)' and 'app.exec_()', running the code
>> would still cause my Maya to hang... Any ideas?
>>
>
> if "if __name__" stuff should not be executed when you import into maya.
> It would only happen when you run the tool standalone. I dont see a reason
> why maya should hang, if what you are doing in Maya is just creating an
> instance of your BasicDialog and calling show()
>
>
>>
>> But still, I would like to have some insights if the code that I have
>> written is the correct way to go?
>>
>
> Are you working with an older Maya (such as pre 2014?). As of current,
> Maya ships with PySide. You shouldn't need to create QString or QStringList
> (if I remember right). They should be able to handle python strings and
> lists?
>
>
>
>>
>>
>> # PyQt4 Modules
>> from PyQt4 import QtGui, QtCore
>> import sys
>> import maya.cmds as cmds
>>
>>
>> class BasicDialog(QtGui.QWidget):
>> def __init__(self):
>> QtGui.QWidget.__init__(self)
>> self.initData()
>> self.initUI()
>>
>> def initData(self):
>> data = QtCore.QStringList()
>> #data = []
>>
>> geos = cmds.ls(type = "mesh")
>> sel = cmds.listRelatives(geos, parent = True)
>> for item in sel:
>> data.append(QtCore.QString(str(item)))
>>
>> # Model
>>
>> self.ui_model = QtGui.QStringListModel(data)
>>
>> def initUI(self):
>> listView = QtGui.QListView()
>> listView.setModel(self.ui_model)
>>
>> layout = QtGui.QVBoxLayout()
>> layout.addWidget(listView)
>> self.setLayout(layout)
>>
>>
>> if __name__ == "__main__":
>> #app = QtGui.QApplication(sys.argv)
>> win = BasicDialog()
>> win.show()
>> #app.exec_()
>>
>>
>> Also, another question I have is, is using 'data = []' the same as 'data
>> = QtCore.QStringList()'? In my case, which would be better? Seeing that
>> both seems to be giving me the same results..
>>
>> --
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>> "Python Programming for Autodesk Maya" group.
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>> msgid/python_inside_maya/4894d625-0e32-4fa8-8a0a-
>> 4398c14c7776%40googlegroups.com
>> 
>> .
>> For more options, visit https://groups.google.com/d/optout.
>>
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> 
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Re: [Maya-Python] PyQt Model/View not showing in Maya

2016-09-19 Thread Justin Israel 
On Tue, Sep 20, 2016 at 12:20 PM likage  wrote:

> @Justin, thanks for getting back to me.
> So, I did a rewrite, however as long as I did not comment out both the
> 'app = QtGui.QApplication(sys.argv)' and 'app.exec_()', running the code
> would still cause my Maya to hang... Any ideas?
>

if "if __name__" stuff should not be executed when you import into maya. It
would only happen when you run the tool standalone. I dont see a reason why
maya should hang, if what you are doing in Maya is just creating an
instance of your BasicDialog and calling show()


>
> But still, I would like to have some insights if the code that I have
> written is the correct way to go?
>

Are you working with an older Maya (such as pre 2014?). As of current, Maya
ships with PySide. You shouldn't need to create QString or QStringList (if
I remember right). They should be able to handle python strings and lists?



>
>
> # PyQt4 Modules
> from PyQt4 import QtGui, QtCore
> import sys
> import maya.cmds as cmds
>
>
> class BasicDialog(QtGui.QWidget):
> def __init__(self):
> QtGui.QWidget.__init__(self)
> self.initData()
> self.initUI()
>
> def initData(self):
> data = QtCore.QStringList()
> #data = []
>
> geos = cmds.ls(type = "mesh")
> sel = cmds.listRelatives(geos, parent = True)
> for item in sel:
> data.append(QtCore.QString(str(item)))
>
> # Model
>
> self.ui_model = QtGui.QStringListModel(data)
>
> def initUI(self):
> listView = QtGui.QListView()
> listView.setModel(self.ui_model)
>
> layout = QtGui.QVBoxLayout()
> layout.addWidget(listView)
> self.setLayout(layout)
>
>
> if __name__ == "__main__":
> #app = QtGui.QApplication(sys.argv)
> win = BasicDialog()
> win.show()
> #app.exec_()
>
>
> Also, another question I have is, is using 'data = []' the same as 'data =
> QtCore.QStringList()'? In my case, which would be better? Seeing that both
> seems to be giving me the same results..
>
> --
> 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 python_inside_maya+unsubscr...@googlegroups.com.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/python_inside_maya/4894d625-0e32-4fa8-8a0a-4398c14c7776%40googlegroups.com
> 
> .
> For more options, visit https://groups.google.com/d/optout.
>

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[Maya-Python] PyQt Model/View not showing in Maya

2016-09-19 Thread likage 
Hi all, I have just started learning on pyqt4 model/view and I had thought 
of trying out a very simple code to populate maya items into a QListView. 
As I run the following code in an editor (without those maya 
modules/lines), I am able to see QListView being called and populated with 
the information.

As soon as I tried running the code in Maya, the session keeps crashing on 
me unless I comment out the lines on 'app' and 'sys.exit'
But even so, if those lines are commented out, while it does pops up a 
window, nothing was populated within.

Can someone kindly advise?

# PyQt4 Modules
from PyQt4 import QtGui, QtCore, uic
import sip
import sys
import maya.cmds as cmds
import maya.OpenMayaUI as mui

def getMayaWindow():
ptr = mui.MQtUtil.mainWindow()
return sip.wrapinstance(long(ptr), QtCore.QObject)

def main():
dialog = BasicDialog()
dialog.show()


class BasicDialog(QtGui.QDialog):
def __init__(self, parent=getMayaWindow()):
super(BasicDialog, self).__init__(parent)
#app = QtGui.QApplication(sys.argv)
#app.setStyle("cleanLooks")

# Data
data = QtCore.QStringList() 
#data << "one" << "two" << "three" << "four" << "five"   

geos = cmds.ls(type = "mesh")
sel = cmds.listRelatives(geos, parent = True)
for item in sel:
data.append(QtCore.QString(str(item)))

# Model
model = QtGui.QStringListModel(data)

listView = QtGui.QListView()
listView.show()
listView.setModel(model)

#sys.exit(app.exec_())
main()


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