well I must say thank you,
as per heading towards the goal I feel like I am stuck with desire to read
cameras available from maya scene file without having to launch maya.
I made a python script like this
#file for mapay interprer to execute
import os
import maya.standalone
import maya.cmds as cmds
#fileToOpen="I:/scenes/san_telus_pan_v009.ma"
def getCams(phileToOpen):
maya.standalone.initialize(name='python')
cmds.file(phileToOpen, force=True,open=True)
cams=cmds.ls(type="camera")
return cams
the above file is called by a slot readFile(self) in my this
GUI<http://www.devilsan.com/uploads/9/9/4/6/9946022/2955377_orig.png>I
already posted as link to
pastebin <http://pastebin.com/9gfYaWRV>
def readFile(self):
## call to readMayaFile.py using mayapy.exe interpreter
fileToOpen="I:/Vanarts Work/san_term3_project/3D/scenes/
san_telus_pan_v009.ma"
print "Opening: %s" %(os.path.basename(fileToOpen))
import readMayaFile
reload(readMayaFile)
readMayaFile.getCams(fileToOpen)
but I do not understand How I shoudl use mayapy interpreter to run the
readMayaFile.py and return list of cameras .. makes me in exquisite pain
coz I coundt figure out trying different ways
this logic seems like useful to have coz otherwise someone who wants to do
a batch render would have to open the maya to see what camera/s needs to
be rendered.
Should I use subproess.call() to launch mayapy.exe and pass the
readMayaFile.py but then how would i get the list of cameras ?
On Sun, Dec 9, 2012 at 1:10 AM, Justin Israel <[email protected]>wrote:
> The general idea of what you are doing is correct. You have a more
> generalized SLOT function that can receive arguments telling it how to
> operate on different targets or whatnot.
> There are different ways, I am sure, of doing the actual conditional logic
> within that SLOT. It could delegate out to other private methods if you
> want, or simply do the action right there in the code as you are doing it.
> The optimal thing would be to make sure it is DRY (Dont Repeat Yourself),
> so that you don't have 10 conditions all performing duplicate
> functionality. Though you are not doing wrong now, since each condition has
> different things to call, with different checks to made, with different
> widgets to set result values on.
>
> Anyways. What you are doing now is fine. One way of making it a bit
> cleaner is to use some constants for your action types instead of plain
> literal strings:
>
> class MyClass(QWidget):
> SCENE_FILE_TYPE = "scnFile" # or just 0
> RENDER_DIR_TYPE = "rdPath # or just 1
>
> ...
> def foo(self):
> scnFile = partial(self.showFileDialog, self.SCENE_FILE_TYPE)
> rndPath = partial(self.showFileDialog, self.RENDER_DIR_TYPE)
> ...
> def showFileDialog(self, typ, *args, **kwargs):
> if typ == self.SCENE_FILE_TYPE:
> ...
> elif typ == self.RENDER_DIR_TYPE:
> ...
>
> It is not necessary to do this, but you were asking for extra tips.
>
>
>
> On Dec 8, 2012, at 9:55 AM, šãñ wrote:
>
> sorry i forgot to mention the question for my last post about slots..
>
> I am calling same slots with different button by passing a value and
> checking what value it is and executing the relevant part in the
> showFileDialog method.. is it the right way to do becuase this does work
> but I guess their is a better way of doing it ?
>
>
> On Sat, Dec 8, 2012 at 11:07 PM, Justin Israel <[email protected]>wrote:
>
>> Unless you specifically change settings on SIP, a QString is returned for
>> all Qt methods that return a "string" results. You have to convert it to a
>> python string if you want to treat it as such:
>>
>> self.scnFilePath.setText(os.path.normpath(str(fname)))
>>
>>
>> On Dec 8, 2012, at 9:01 AM, šãñ wrote:
>>
>> I have two browse button in the GUI as uprobably say in last image
>> atachment
>>
>> so instead of creating two different slot for each button click i
>> implemented it this way !!
>> # assign slots to buttons
>> scnFile=partial(self.showFileDialog,"scnFile")
>> self.browseBtn.clicked.connect(scnFile)
>> rndPath=partial(self.showFileDialog,"rdPath")
>> self.rdBtn.clicked.connect(rndPath)
>>
>>
>> and the showFileDialog() method as as under:
>> def showFileDialog(self,*args):
>> directory=os.path.expanduser('~')
>> if args[0]=="scnFile":
>> fname=QtGui.QFileDialog.getOpenFileName(self,'Open
>> File',directory)
>> if os.path.isfile(fname):
>> self.scnFilePath.setText(fname)
>> elif args[0]=="rdPath":
>>
>> selectedDir=QtGui.QFileDialog.getExistingDirectory(self,"Select Render
>> Directory",directory)
>> if selectedDir.isEmpty():
>> print "No directory selected"
>> else:
>> self.renDir.setText(selectedDir)
>>
>> also if i try to do self.scnFilePath.setText(os.path.normpath(fname))
>>
>> i get error saying
>> Traceback (most recent call last):
>> File "RenderUI.py", line 203, in showFileDialog
>> if os.path.isfile(os.path.normpath(fname)):
>> File "D:\Python26\lib\ntpath.py", line 417, in normpath
>> if path.startswith("\\"):
>> AttributeError: 'QString' object has no attribute 'startswith'
>>
>>
>>
>>
>> On Sat, Dec 8, 2012 at 4:12 AM, Justin Israel <[email protected]>wrote:
>>
>>> 1) Just set your label to have a fixed with (setFixedWidth), or make
>>> your other widgets size policies "expanding" so they take up any new space.
>>> Probably the first one though.
>>>
>>> 2) If you want an asynchronous result from your filedialog, then instead
>>> of using my static getExistingDirectory() suggestion, just stick with
>>> creating the instance like you were. If you stay with calling the exec_()
>>> on the dialog, you are waiting for a response anyways so you can just set
>>> the value on to the text box. But for the async approach, you would show()
>>> instead of exec_() and maybe connect the accept() signal to a slot that
>>> will check the value and enter it into the textedit.
>>> For more specific help, I would need to see an example of what you are
>>> trying.
>>>
>>> 3) Why would so many people recommend not using list comprehension? Just
>>> flat out not to use it? They are a great way to get more performance than a
>>> normal for loop. I can see there are misuses of them though.
>>> For your specific example, you would usually not want to use a list
>>> comprehension for side effects. That is, you shouldn't use them to append
>>> or call some method in a loop. They are used to produce results that you
>>> intend to keep.
>>> There really isn't much you can do to change your example. Qt would have
>>> needed to provide an layout.addWidgets(aList) to accept a list of widgets.
>>> So you just need to call them in order like you are doing.
>>>
>>>
>>> On Fri, Dec 7, 2012 at 1:10 PM, šãñ <[email protected]> wrote:
>>>
>>>>
>>>> thank you guys for pointing a solution but Now I really have a bunch of
>>>> more questions these are pretty basic that i know ...
>>>>
>>>> my first question is how do I keep the gridColumWidth fixed so that it
>>>> should not change if the label text changes(see attached image)
>>>>
>>>> my second question is how can i use a showFileDialog slot fill
>>>> QLineEdit for scne file for selecting directory and similarly in second tab
>>>> ..(as you can see in the attached screenshot I have so many browse buttons)
>>>> I remember seeing in the PyQt tutorial where you made use of partial
>>>> but i guess that was for removeCallable from OM, but now how should i find
>>>> QPushButton.objectName to be passed to slot so depending on what button is
>>>> pressed i can perform some operation...
>>>>
>>>> thirdly , so many people have recommended me not to use List
>>>> comprehension but i find it convenient(at least here) to use while
>>>> addWidget or addLayout...
>>>> like [p3_HBox2.addWidget(each) for each in
>>>> [self.pylbl,self.pyEdt,self.pybrwBtn]]
>>>>
>>>> but I have a situation when I am using a combination of addWidget
>>>> ,addStretch and addLayout
>>>>
>>>> like in this case
>>>>
>>>> p1_vertical.addLayout(gridLayout)
>>>> p1_vertical.addLayout(gridLayout2)
>>>> p1_vertical.addLayout(hbox)
>>>> p1_vertical.addWidget(hLine)
>>>> p1_vertical.addLayout(nxtbtnbox)
>>>>
>>>> in that case how should i after adding hbox in LC i can add
>>>> addWidget(hLine) then again nxtbtnbox, i feel like i can use it with
>>>> enumerate but is their any better option?
>>>>
>>>>
>>>>
>>>>
>>>> On Sat, Dec 8, 2012 at 12:30 AM, Justin Israel
>>>> <[email protected]>wrote:
>>>>
>>>>> If you are using your own custom status bar in a widget, then you have
>>>>> to connect focus or hover events to something that sets the message on the
>>>>> status bar. You can set the setStatusTip("") on each widget and then just
>>>>> read that.
>>>>>
>>>>> When you use a QMainWindow, the status bar is already wired up for you
>>>>> so that any time you hover a widget, the statusBar will automatically read
>>>>> the widgets statusTip():
>>>>>
>>>>> app = QtGui.QApplication([])
>>>>>
>>>>> w = QtGui.QMainWindow()
>>>>> button = QtGui.QPushButton("clicky", w)
>>>>> button.setStatusTip("I am a clicky")
>>>>> w.setCentralWidget(button)
>>>>>
>>>>> status = w.statusBar()
>>>>>
>>>>> w.show()
>>>>> w.raise_()
>>>>>
>>>>> status.showMessage("Welcome to the app!", 5000)
>>>>>
>>>>> app.exec_()
>>>>>
>>>>> For the file dialog, the way you are using it, there is a convenience
>>>>> static method you can call:
>>>>> http://qt-project.org/doc/qt-4.8/qfiledialog.html#getExistingDirectory
>>>>>
>>>>> It will return an empty string if they cancel:
>>>>>
>>>>> directory=os.path.expanduser('~')
>>>>> selectedDir = QtGui.QFileDialog.getExistingDirectory(w,
>>>>> "Select Render Directory", directory)
>>>>>
>>>>> if selectedDir.isEmpty():
>>>>> print "No directory selected"
>>>>> else:
>>>>> print selectedDir
>>>>>
>>>>>
>>>>> On Fri, Dec 7, 2012 at 9:56 AM, Kurian O.S <[email protected]> wrote:
>>>>>
>>>>>> For Directory you want to use exec so you need to change your code
>>>>>> like this
>>>>>>
>>>>>> def showDirDialog(self):
>>>>>> directory=os.path.expanduser('~')
>>>>>> dirPath=QtGui.QFileDialog(self,"Select Render Directory",
>>>>>> directory)
>>>>>> dirPath.setFileMode(QtGui.QFileDialog.DirectoryOnly)
>>>>>> if dirPath.exec_() == 1:
>>>>>> fname_list = str(dirPath.selectedFiles()[0])
>>>>>> print fname_list
>>>>>>
>>>>>> For changing the statusBar text you need to implement focusIn and
>>>>>> out Event and Justin already mention about that in
>>>>>> reimplementQPlainText’s
>>>>>> focusInEvent in another source file ,how to ? thread.
>>>>>>
>>>>>>
>>>>>> On Fri, Dec 7, 2012 at 6:25 AM, san <[email protected]> wrote:
>>>>>>
>>>>>>> as a part of my learning PyQt4 I started making a gui(see
>>>>>>> attachment) where I implement all the examples I learn from video tuts
>>>>>>> or
>>>>>>> book I am referring,
>>>>>>>
>>>>>>> however I count figure out how should I implement the method to show
>>>>>>> text message on the status bar when user hover mouse over a widget[link
>>>>>>> to pastebin
>>>>>>> <http://pastebin.com/9gfYaWRV>]
>>>>>>>
>>>>>>> and secondly I dont understand how come this method to select
>>>>>>> Directory is not working?
>>>>>>>
>>>>>>> def showDirDialog(self):
>>>>>>> directory=os.path.expanduser('~')
>>>>>>> dirPath=QtGui.QFileDialog(self,"Select Render Directory",
>>>>>>> directory)
>>>>>>> dirPath.setFileMode(QtGui.QFileDialog.DirectoryOnly)
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> view archives: http://groups.google.com/group/python_inside_maya
>>>>>>> change your subscription settings:
>>>>>>> http://groups.google.com/group/python_inside_maya/subscribe
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> --:: Kurian ::--
>>>>>>
>>>>>>
>>>>>> --
>>>>>> view archives: http://groups.google.com/group/python_inside_maya
>>>>>> change your subscription settings:
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>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> view archives: http://groups.google.com/group/python_inside_maya
>>>>> change your subscription settings:
>>>>> http://groups.google.com/group/python_inside_maya/subscribe
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> **
>>>>
>>>> [image: San's personal blog]<http://feeds.feedburner.com/SanLuthraBlog>
>>>>
>>>> *
>>>> *
>>>>
>>>>
>>>> --
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>>>
>>>
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>>
>>
>>
>> --
>> **
>>
>> [image: San's personal blog] <http://feeds.feedburner.com/SanLuthraBlog>
>>
>> *
>> *
>>
>>
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>>
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>>
>
>
>
> --
> **
>
> [image: San's personal blog] <http://feeds.feedburner.com/SanLuthraBlog>
>
> *
> *
>
>
> --
> view archives: http://groups.google.com/group/python_inside_maya
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>
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**
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