Bug 228780

Summary:	mousewheel left/right moves volume slider in counterintuitive direction.
Product:	[Applications] kmix	Reporter:	Oliver Henshaw <oliver.henshaw>
Component:	general	Assignee:	Christian Esken <esken>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Oliver Henshaw 2010-02-27 17:27:02 UTC

Version:            (using KDE 4.4.0)
OS:                Linux
Installed from:    Fedora RPMs

The "mouse wheel right" action decreases the volume of a kmix slider (whether in the panel applet or the mixer window). This is counter-intuitive, especially with horizontal sliders - where the slider moves to the right as volume increases.

Expected behavior: Mouse wheel right increases volume, mouse wheel left decreases it.

Comment 1 Christian Esken 2011-09-17 11:23:21 UTC

Probably I cannot fix it at the moment. Qt doesn't seem to indicate the actual wheel in the QWheelEvent: http://doc.qt.nokia.com/latest/qwheelevent.html

Comment 2 Oliver Henshaw 2011-09-17 15:16:53 UTC

I've experimented a little with PyQt and it looks like QWheelEvent::orientation() does what you need.

Does the slider act differently in RTL environments? If so I'd guess you have to check that too.

Comment 3 Christian Esken 2011-09-17 21:00:40 UTC

I guess you are right. I have overlooked the QWheelEvent::orientation(). I'll submit a patch in a minute.

Comment 4 Christian Esken 2011-09-17 21:02:03 UTC

SVN commit 1254110 by esken:

BUGS: 228780
Reverse direction on horizontal QWheelEvents

 M  +5 -2      kmixdockwidget.cpp  
 M  +1 -1      kmixdockwidget.h  
 M  +8 -3      ksmallslider.cpp  
 M  +6 -1      mdwslider.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1254110

Comment 5 Christian Esken 2011-09-17 21:04:48 UTC

I cannot test it myself due to lack of hardware (horizontal mouse wheel). But it really should work out of the box, so I have directly closed this bug. If I am wrong please reopen teh bug or feel free to contact my via personal email.