使用PySide清理Maya中的可停靠窗口

Question

我创建了一个能够停靠在Maya主要ui中的工具，但是一旦关闭它我就无法找到一种方法来清理它。问题是如果我创建该工具的多个实例然后将其拖动到位以停靠它，当我右键单击Maya的窗口时它们将全部显示。当工具关闭时，如何正确清理这些？

我已经尝试cmds.deleteUI，QObject.deleteLater()，我最多只能清除该工具的内容，但它仍然存在于Maya中。这是我到目前为止的一个例子：

from shiboken import wrapInstance
from PySide import QtGui, QtCore
from maya import OpenMayaUI as OpenMayaUI
from maya.app.general.mayaMixin import MayaQWidgetDockableMixin

class Window(MayaQWidgetDockableMixin, QtGui.QWidget):
    def __init__(self, parent = None):
        super(self.__class__, self).__init__(parent = parent)
        mayaMainWindowPtr = OpenMayaUI.MQtUtil.mainWindow() 
        self.mayaMainWindow = wrapInstance(long(mayaMainWindowPtr), QtGui.QWidget) 
        self.setWindowFlags(QtCore.Qt.Window)

        if cmds.window('myTool', q = True, ex = True):
            cmds.deleteUI('myTool')

        self.setObjectName('myTool')

        self.setWindowTitle('My tool')
        self.resize(200, 200)

        self.myButton = QtGui.QPushButton('TEMP')

        self.mainLayout = QtGui.QVBoxLayout()
        self.mainLayout.addWidget(self.myButton)
        self.setLayout(self.mainLayout)

    def dockCloseEventTriggered(self):
        self.deleteLater()

    def run(self):
        self.show(dockable = True)

myWin = Window()
myWin.run()

SOLUTION：

在挖掘mayaMixin.py之后，我设法找到了一个有效的解决方案，我之后的行为！这个想法是你需要挖掘Maya的主窗口并删除它的任何实例。

以下示例将在窗口关闭或创建新实例后干净地删除任何实例。如果它停靠或浮动并不重要，它似乎工作正常。如果您在停靠时不想要删除行为，也可以随时调整行为。我在代码中留下了很多评论，因为有很多＆＃34;陷阱＆＃34;。

from shiboken import wrapInstance
from PySide import QtGui, QtCore
from maya import OpenMayaUI as OpenMayaUI
from maya.app.general.mayaMixin import MayaQWidgetDockableMixin
from maya.OpenMayaUI import MQtUtil

class MyWindow(MayaQWidgetDockableMixin, QtGui.QDialog):
    toolName = 'myToolWidget'

    def __init__(self, parent = None):
        # Delete any previous instances that is detected. Do this before parenting self to main window!
        self.deleteInstances()

        super(self.__class__, self).__init__(parent = parent)
        mayaMainWindowPtr = OpenMayaUI.MQtUtil.mainWindow() 
        self.mayaMainWindow = wrapInstance(long(mayaMainWindowPtr), QtGui.QMainWindow)
        self.setObjectName(self.__class__.toolName) # Make this unique enough if using it to clear previous instance!

        # Setup window's properties
        self.setWindowFlags(QtCore.Qt.Window)
        self.setWindowTitle('My tool')
        self.resize(200, 200)

        # Create a button and stuff it in a layout
        self.myButton = QtGui.QPushButton('My awesome button!!')
        self.mainLayout = QtGui.QVBoxLayout()
        self.mainLayout.addWidget(self.myButton)
        self.setLayout(self.mainLayout)

    # If it's floating or docked, this will run and delete it self when it closes.
    # You can choose not to delete it here so that you can still re-open it through the right-click menu, but do disable any callbacks/timers that will eat memory
    def dockCloseEventTriggered(self):
        self.deleteInstances()

    # Delete any instances of this class
    def deleteInstances(self):
        mayaMainWindowPtr = OpenMayaUI.MQtUtil.mainWindow() 
        mayaMainWindow = wrapInstance(long(mayaMainWindowPtr), QtGui.QMainWindow) # Important that it's QMainWindow, and not QWidget/QDialog

        # Go through main window's children to find any previous instances
        for obj in mayaMainWindow.children():
            if type( obj ) == maya.app.general.mayaMixin.MayaQDockWidget:
                #if obj.widget().__class__ == self.__class__: # Alternatively we can check with this, but it will fail if we re-evaluate the class
                if obj.widget().objectName() == self.__class__.toolName: # Compare object names
                    # If they share the same name then remove it
                    print 'Deleting instance {0}'.format(obj)
                    mayaMainWindow.removeDockWidget(obj) # This will remove from right-click menu, but won't actually delete it! ( still under mainWindow.children() )
                    # Delete it for good
                    obj.setParent(None)
                    obj.deleteLater()        

    # Show window with docking ability
    def run(self):
        self.show(dockable = True)

myWin = MyWindow()
myWin.run()

这样就不再污染玛雅的环境了。希望它有所帮助！

Answer 1

深入研究mayaMixin.py之后，我设法获得了我所追求的行为的有效解决方案！这个想法是，您需要在Maya的主窗口中进行挖掘，并删除其中的所有实例。

关闭窗口或创建新实例后，以下示例将彻底删除所有实例。停靠或浮动都没关系，看起来工作正常。如果您不想在停靠时将其关闭，也可以随时对其进行调整。我在代码中留下了很多注释，因为那里有很多“陷阱”。

from shiboken import wrapInstance
from PySide import QtGui, QtCore
from maya import OpenMayaUI as OpenMayaUI
from maya.app.general.mayaMixin import MayaQWidgetDockableMixin
from maya.OpenMayaUI import MQtUtil

class MyWindow(MayaQWidgetDockableMixin, QtGui.QDialog):
    toolName = 'myToolWidget'

    def __init__(self, parent = None):
        # Delete any previous instances that is detected. Do this before parenting self to main window!
        self.deleteInstances()

        super(self.__class__, self).__init__(parent = parent)
        mayaMainWindowPtr = OpenMayaUI.MQtUtil.mainWindow() 
        self.mayaMainWindow = wrapInstance(long(mayaMainWindowPtr), QtGui.QMainWindow)
        self.setObjectName(self.__class__.toolName) # Make this unique enough if using it to clear previous instance!

        # Setup window's properties
        self.setWindowFlags(QtCore.Qt.Window)
        self.setWindowTitle('My tool')
        self.resize(200, 200)

        # Create a button and stuff it in a layout
        self.myButton = QtGui.QPushButton('My awesome button!!')
        self.mainLayout = QtGui.QVBoxLayout()
        self.mainLayout.addWidget(self.myButton)
        self.setLayout(self.mainLayout)

    # If it's floating or docked, this will run and delete it self when it closes.
    # You can choose not to delete it here so that you can still re-open it through the right-click menu, but do disable any callbacks/timers that will eat memory
    def dockCloseEventTriggered(self):
        self.deleteInstances()

    # Delete any instances of this class
    def deleteInstances(self):
        mayaMainWindowPtr = OpenMayaUI.MQtUtil.mainWindow() 
        mayaMainWindow = wrapInstance(long(mayaMainWindowPtr), QtGui.QMainWindow) # Important that it's QMainWindow, and not QWidget/QDialog

        # Go through main window's children to find any previous instances
        for obj in mayaMainWindow.children():
            if type( obj ) == maya.app.general.mayaMixin.MayaQDockWidget:
                #if obj.widget().__class__ == self.__class__: # Alternatively we can check with this, but it will fail if we re-evaluate the class
                if obj.widget().objectName() == self.__class__.toolName: # Compare object names
                    # If they share the same name then remove it
                    print 'Deleting instance {0}'.format(obj)
                    mayaMainWindow.removeDockWidget(obj) # This will remove from right-click menu, but won't actually delete it! ( still under mainWindow.children() )
                    # Delete it for good
                    obj.setParent(None)
                    obj.deleteLater()        

    # Show window with docking ability
    def run(self):
        self.show(dockable = True)

myWin = MyWindow()
myWin.run()

因此，它不再污染Maya的环境。希望对您有帮助！