Bug 689 – Potential bug when subclassing QTableView

PySide Bugzilla Closed for New Bugs

PySide is now a Qt Add-on and uses the Qt Project's JIRA Bug Tracker instead of this Bugzilla instance. This Bugzilla is left for reference purposes.

Bug 689 - Potential bug when subclassing QTableView

Summary:

Potential bug when subclassing QTableView

Status:	CLOSED INVALID

Product:	PySide
Classification:	Unclassified
Component:	PySide
Version:	1.0.0 beta5
Platform:	Other Linux

Importance:	P3 normal
Assigned To:	Hugo Parente Lima

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-02-17 17:55 EET by rulfzid
Modified:	2011-04-01 23:15 EEST (History)
CC List:	8 users (show)

See Also:

Attachments
screenshot (81.68 KB, image/png) 2011-02-17 17:55 EET, rulfzid	Details
Small test program to illustrate the bug (2.86 KB, text/plain) 2011-02-17 17:56 EET, rulfzid	Details
Another test program (this time a QTreeView) (2.39 KB, text/x-python) 2011-02-17 20:52 EET, rulfzid	Details
A simpler example showing the problem. (819 bytes, text/x-python) 2011-03-25 00:36 EET, Hugo Parente Lima	Details
Example showing the same behaviour on C++ (950 bytes, text/plain) 2011-03-25 00:46 EET, Hugo Parente Lima	Details
Show Obsolete (2) Add an attachment (proposed patch, testcase, etc.)

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Description rulfzid 2011-02-17 17:55:40 EET

Created attachment 266 [details]
screenshot

I'm runnning Ubuntu 10.10, PySide 1.0rc5, Python 2.6.

The drawing of the selection is buggy when I set the selectionbehavior to
QAbstractItemView.SelectRows (see attached screenshot) - It doesn't show only
the row selected as being selected, but draws the selected background on
various individual cells as I click on them.

I'm subclassing QTableView so I can monitor the selectionChanged slot.

If I subclass QTableView without  monitoring the slot, the drawing of the
selection is fine, and the QTableView also works fine - the bug only seems to
appear when you actually do stuff in the subclass.

I've attached a screenshot and a small test program that produces the problem
for me.

Comment 1 rulfzid 2011-02-17 17:56:19 EET

Created attachment 267 [details]
Small test program to illustrate the bug

Comment 2 rulfzid 2011-02-17 20:52:47 EET

Created attachment 268 [details]
Another test program (this time a QTreeView)

It seems that the same bug affects QTreeView as well. I get the same effects
using the sample program attached here as I did with the QTableView.

Comment 3 Hugo Parente Lima 2011-02-18 11:34:48 EET

Appears to be a painting bug from Qt, not PySide, need some more investigation.

Another problem, when I double click a row in your second example the app get
freeze, weird...

Comment 4 Hugo Parente Lima 2011-03-25 00:36:18 EET

Created attachment 290 [details]
A simpler example showing the problem.

Comment 5 Hugo Parente Lima 2011-03-25 00:46:47 EET

Created attachment 291 [details]
Example showing the same behaviour on C++

The same issue occur on C++, you need to call the Qt version of
selectionChanged method to get everything painted right :-/.

Marking the bug as invalid as this is a Qt problem and can be reproduced in
C++.

Comment 6 Hugo Parente Lima 2011-04-01 23:15:52 EEST

Closing bug after release of PySide 1.0.1.