** Changed in: gtk+3.0 (Ubuntu)
Status: New => Triaged
** Bug watch added: GNOME Bug Tracker #727650
https://bugzilla.gnome.org/show_bug.cgi?id=727650
** Also affects: gtk via
https://bugzilla.gnome.org/show_bug.cgi?id=727650
Importance: Unknown
Status: Unknown
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https://bugs.launchpad.net/bugs/1302546
Title:
gtk drawing area - missing or incorrect expose or draw event
Status in GTK+ GUI Toolkit:
Unknown
Status in “gtk+3.0” package in Ubuntu:
Triaged
Bug description:
Application is Fotoxx 14.04. A GTK notebook is used with tabs
containing drawing areas inside scrolled windows. The program works on
Ubuntu 13.10 and earlier (GTK 3.8) and fails on Ubuntu 14.04 beta (as
of April 4) (GTK 3.10).
When the notebook tab is changed the new tab's drawing area is not
updated (Fotoxx gallery page). Some prior data is present and the rest
is background color only. Clicking elsewhere and then clicking the
window title bar (unfocus and refocus the app) causes the tab to
update correctly. Removing the default "double buffered" attribute
from the drawing area widget after it is created makes everything work
correctly on Ubuntu 14.04. However on earlier Ubuntu releases the
background is not updated and is filled with data from the previous
tab.
This seems to be a problem with missing "draw" events or events with
incorrect update regions. I have verified that draw events are not
sent when the tab is switched but are sent when the window acquires
focus.
The GTK bug tracking system seems to have related bugs but I cannot be
sure (too much technical jargon for my knowledge of GTK internals). I
did not file a report there because the expected knowledge of
internals is missing. The bug may be fixed in GTK 3.12.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libgtk-3-0 3.10.7-0ubuntu5
ProcVersionSignature: Ubuntu 3.13.0-22.44-generic 3.13.8
Uname: Linux 3.13.0-22-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14-0ubuntu1
Architecture: amd64
CurrentDesktop: Unity
Date: Fri Apr 4 13:28:59 2014
InstallationDate: Installed on 2014-03-28 (7 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
SourcePackage: gtk+3.0
UpgradeStatus: No upgrade log present (probably fresh install)
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