Getting the qt designer working with Pyside Maya 2014

[floyd1510]

Hello,

Can I get an example of getting a .ui (created from the qt designer) loading with Pyside in Maya 2014. I tried to replace the loadUi function of PyQt but somehow I cannot get the UI window up (Maya does not complain about anything when I execute the code, just no result)

This link : http://stackoverflow.com/questions/14892713/how-do-you-load-ui-files-onto-python-classes-with-pyside asks you to override the default function, which I tried, but still could not manage to load the UI

Thank you for the help,
Vikram.

[johnvdz]

have a look at nathans Horne's page. theres a link to a code file he
offers for uic replacement using pysideuic. should be all you need.

http://nathanhorne.com/?p=451

john

[Vikram Shingrani]

Thanks for the link John. I did replace Nathans code to work with Pyside, but still cannot get it working. Secondly, I have changed it to use the shiboken module to get the Maya window. Here's what I have : 

import pysideuic

import xml.etree.ElementTree as xml

from cStringIO import StringIO

from PySide import QtGui, QtCore

from shiboken import wrapInstance

import maya.OpenMayaUI as apiUI

def getMayaWindow():

    """

    Get the main Maya window as a QtGui.QMainWindow instance

    @return: QtGui.QMainWindow instance of the top level Maya windows

    """

    ptr = apiUI.MQtUtil.mainWindow()

    if ptr is not None:

        return wrapInstance(long(ptr),QtGui.QWidget)

def loadUiType(uiFile):

        """

        Pyside lacks the "loadUiType" command, so we have to convert the ui file to py code in-memory first

        and then execute it in a special frame to retrieve the form_class.

        """

        parsed = xml.parse(uiFile)

        widget_class = parsed.find('widget').get('class')

        form_class = parsed.find('class').text

    

        with open(uiFile, 'r') as f:

            o = StringIO()

            frame = {}

            

            pysideuic.compileUi(f, o, indent=0)

            pyc = compile(o.getvalue(), '<string>', 'exec')

            exec pyc in frame

            

            #Fetch the base_class and form class based on their type in the xml from designer

            form_class = frame['Ui_%s'%form_class]

            base_class = eval('QtGui.%s'%widget_class)

        return form_class, base_class 

#If you put the .ui file for this example elsewhere, just change this path.

listExample_form, listExample_base = loadUiType('E:/example1.ui')

class ListExample(listExample_form, listExample_base):

def __init__(self, parent=getMayaWindow()):

super(ListExample, self).__init__(parent)

self.setupUi(self)

#The names "addItemBtn" and "removeItemBtn"

#come from the "objectName" attribute in Qt Designer

#the attributes to access them are automatically created

#for us when we call setupUi()

#Designer ensures that the names are unique for us.

self.addItemBtn.clicked.connect(self.addItem)

self.removeItemBtn.clicked.connect(self.removeItem)

def addItem(self):

"""

Add a new item to the end of the listWidget

"""

item = QtGui.QListWidgetItem(self.listWidget)

item.setText('Item #%s!'%self.listWidget.count())

def removeItem(self):

"""

Remove the last item from the listWidget

"""

count = self.listWidget.count()

if count:

self.listWidget.takeItem(count-1)

Any ideas?

Thanks you,

Vikram.

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[Justin Israel]

Not sure off hand why it doesn't work, but as a side note, this is kind of the reason why I always preferred to just use pyside-uic / pyuic to convert the ui files. Then there is no converting and parsing going on at runtime. 

You would normally do the same thing anyways (at least I do) with resource files, having to use pyside-rcc to convert from rcc -> .py

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[Vikram Shingrani]

Can I get a simple running example please?

Thank you

[Justin Israel]

Sure...

ref: http://pyqt.sourceforge.net/Docs/PyQt4/designer.html

#---- Multiple inheritance ---

from PySide import QtCore, QtGui 

# COMMAND:  pyside-uic test.ui -o test_ui.py

from test_ui import Ui_MainWindow

class MyWindow(QtGui.QMainWindow, Ui_MainWindow):

    

    def __init__(self, *args, **kwargs):

        super(MyWindow, self).__init__(*args, **kwargs)

        self.setupUi(self)

if __name__ == "__main__":

    app = QtGui.QApplication([])

    window = MyWindow()

    window.show()

    window.raise_()

    app.exec_()

#-------------------------

Once you generate the ui -> py module, you no longer have to do it dynamically at each run.

This is just one of the available patterns for using a ui file. Some people prefer to not subclass directly from the UI class, and instead make it a member of the class to namespace all of the widgets:

#----Single inheritance ---- 

class MyWindow(QtGui.QMainWindow):

    

    def __init__(self, *args, **kwargs):

        super(MyWindow, self).__init__(*args, **kwargs)

        self.ui = Ui_MainWindow()

        self.ui.setupUi(self)

#-------------------------

[johnvdz]

yeah i have to agree with justin on converting your .ui files using pyside-uic. when i first started using pyside i from pyQt i was just using uic loader for pyqt. most of the tools where simple. but once i changed to pyside i was getting al sorts of crashs and redraw problems. pyside and pyqt are similar but i've found that pyside you need to really roll with it. using the pyside-uic converter and just starting from a .py will save you a whole lot of headaches.

if your using .ui files just because you can save designer files and load them straight of. just use a .bat file or .sh to do the conversion within you tool button while your developing. or run a os.system() cmd.

i just put this in a bat if you have afew to do at the same time or just run the command as is. with os.system()

C:\Python27\Scripts\pyside-uic.exe D:\myUI.ui -o D:\myUI.py
or
os.system("C:\Python27\Scripts\pyside-uic.exe D:\myUI.ui -o D:\myUI.py")

then run your pyside code.

john

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[Count Zer0]

You need to finally draw your window:

Add something like this:

def run():
	if pymel.core.window( 'myTool_window', q = 1, ex = 1 ):
		pymel.core.deleteUI( 'myTool_window' )
	tool = ListExample()
	tool.show()

run()

http://www.jason-parks.com/artoftech/?p=439

-jason

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[Vikram Shingrani]

Thanks for the help Jason, John and Justin. Got it running finally :)

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