The function that determines the scroll rate is in gtk/gtkrange.c /** * _gtk_range_get_wheel_delta: * @range: a #GtkRange * @direction: A #GdkScrollDirection * * Returns a good step value for the mouse wheel. * * Return value: A good step value for the mouse wheel. * * Since: 2.4 **/
Here, the scroll rate is determined dynamically by a smart (not so much?) algorithm: delta = pow (adj->page_size, 2.0 / 3.0); I don't want to offend the gtk developer that implemented this algorithm there. Obviously it may have temporarily solved the users complaining about too fast/too slow scrolling, but now it is time to make the scroll rate modifiable by the user. Of course, implementing a new scrolling algorithm from scratch (with smooth scrolling) must be a priority too, since Ubuntu will possibly be coming to smartphones/tablets. But that rather than waiting for that, this problem can be fixed by a simple gtk patch which will read the scroll rate from a config file. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk+2.0 in Ubuntu. https://bugs.launchpad.net/bugs/124440 Title: gnome needs a way to manipulate scroll speed Status in GTK+ GUI Toolkit: Confirmed Status in NULL Project: Invalid Status in “gtk+2.0” package in Ubuntu: Triaged Bug description: This has been driving me nuts for a while now. The scroll wheel on my desktop mouse (it's an MS wireless optical mouse model 1008) scrolls rather fast. Instead of moving a few lines, it scrolls half a page or more with a very gentle scroll. The bluetooth mouse I use with my laptop does not do this so it's probably somewhat hardware specific. However, I'm wondering if there is a way to modify the speed or sensitivity. I found an answer here from about a year ago (https://answers.launchpad.net/ubuntu/+question/1339) that suggests there isn't a way but I'm wondering if anything has changed since then. I've also skimmed through synaptic but didn't see anything promising (like gsynaptic for touchpads). Thanks. See https://answers.launchpad.net/ubuntu/+question/9200 for more information. To manage notifications about this bug go to: https://bugs.launchpad.net/gtk/+bug/124440/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
