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zolakt	2010-05-04 , 14:13
Posts: 58 \| Thanked: 10 times \| Joined on Dec 2009	#1

Hi,

I have some os.system commands in my app that take some time executing.

I'd like to display a progress bar over my main windows while the commands are running.
It would also be nice if i could write text to it according to execution state, like "adjusting image", "running recognition", "deleting tmp files"

How can I do this in Qt and python?

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Joorin	2010-05-04 , 14:32
Posts: 726 \| Thanked: 345 times \| Joined on Apr 2010 @ Sweden	#2

Did you even try to do a Google search? One search later I found this:

http://zetcode.com/tutorials/pyqt4/widgets/

Jump down to the part about ProgressBar.

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zolakt	2010-05-04 , 14:46
Posts: 58 \| Thanked: 10 times \| Joined on Dec 2009	#3

Originally Posted by Joorin

Did you even try to do a Google search? One search later I found this:

http://zetcode.com/tutorials/pyqt4/widgets/

Jump down to the part about ProgressBar.

Of course I tried googleing.
The problem is I don't have timed events.
I can't know how long does it take for commands to execute.

I need a progress bar that will load "indefinitely" (from left to right, and back) until the commands are over and I have to close the progress bar manually.

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Joorin	2010-05-04 , 14:54
Posts: 726 \| Thanked: 345 times \| Joined on Apr 2010 @ Sweden	#4

A little more Google and I find the following:

If you set minimum, maximum and value all to zero, then you will get the animation. Then call setProgress().

After this you can just change the text after the different tasks end.

And this is the documentation that describes the behaviour:

http://doc.qt.nokia.com/4.6/qprogressbar.html

Last edited by Joorin; 2010-05-04 at 15:02. Reason: Added link

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The Following User Says Thank You to Joorin For This Useful Post:
zolakt

zolakt	2010-05-04 , 15:26
Posts: 58 \| Thanked: 10 times \| Joined on Dec 2009	#5

Thanks for your help!

Do you have any idea how can I start the progress bar in center of screen, and lock focus on it.
So the user can't click anything while the progress bar is loading

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	pelago	2010-05-04 , 15:30
	Posts: 2,121 \| Thanked: 1,540 times \| Joined on Mar 2008 @ Oxford, UK	#6

Originally Posted by zolakt

Thanks for your help!

Do you have any idea how can I start the progress bar in center of screen, and lock focus on it.
So the user can't click anything while the progress bar is loading

I think the Maemo 5 way of doing things is put the progress bar widget in a dialogue box (see updating in Application Manager, moving files in File Manager, etc.)

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Rob1n	2010-05-04 , 15:44
Posts: 3,617 \| Thanked: 2,412 times \| Joined on Nov 2009 @ Cambridge, UK	#7

Originally Posted by pelago

I think the Maemo 5 way of doing things is put the progress bar widget in a dialogue box (see updating in Application Manager, moving files in File Manager, etc.)

Yes, just use the standard QProgressDialog.

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pelago

	noobmonkey	2010-05-04 , 15:52
	Posts: 3,203 \| Thanked: 1,391 times \| Joined on Nov 2009 @ Worthing, England	#8

took me ages to get something that works for me -

Code:

                progress = QtGui.QProgressDialog("Please Wait", "Cancel", 0, 100, MainWindow)
		progress.setWindowModality(QtCore.Qt.WindowModal)
		progress.setAutoReset(True)
		progress.setAutoClose(True)
		progress.setMinimum(0)
		progress.setMaximum(100)
		progress.resize(800,220)
		progress.setWindowTitle("Loading Something")
		progress.show()
                progress.setValue(0)
                <<do something>>
               progress.setValue(20)
               <<do something>>
              etc.....
              progress.setValue(100)
              progress.hide()

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zolakt	2010-05-04 , 16:08
Posts: 58 \| Thanked: 10 times \| Joined on Dec 2009	#9

I tried your code, but it doesn't work for me.

I have a specific situation.
There are two windows, application and the camera app
When camera app is closed, the image goes trough processing.
That is where I need the progress dialog, because it takes some time.

The ting is that the process starts right after the camera app is closed. So I get back to the "multitask view" not the actual application. Maybe that is the problem?