On 28/04/2012 09:21, Mattthew Russell wrote: > I do mean scrolling with the touchpad, in my case edge scrolling, over > the default GTK scrollbar. I haven't tried it with the overlay > scrollbar. > > The result of edge scrolling over the GTK scrollbar in evince is that > the document smoothly scrolls, whereas edge scrolling a few pixels to > the left over the document makes the document scroll in larger jumps.
Ah, that. The scrollbar belongs to the GtkScrolledWindow widget which is what implements the whole smooth scrolling bits. The problem is that the document view which resides inside the GtkScrolledWindow isn't accepting (and forwarding) the smooth scrolling events required for smooth scrolling to work. -- Kind regards, Loong Jin -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evince in Ubuntu. https://bugs.launchpad.net/bugs/981248 Title: Activate smooth scrolling in Evince [SRU] Status in Evince document viewer: New Status in “evince” package in Ubuntu: Incomplete Status in “evince” source package in Precise: Incomplete Status in “evince” source package in Quantal: Incomplete Bug description: [Problem] Gtk+ 3.3.18 introduced smooth scrolling via the GDK_SCROLL_SMOOTH event, which is activated by default for most widgets, but opt-in for custom widgets that handle scroll events themselves. Evince's document view is a custom widget that does not have GDK_SMOOTH_SCROLL_MASK in its enabled events mask, and as such does not benefit from this. This results in a rather jarring behaviour in scrolling experience from the rest of the Gtk3 applications using GtkScrolledWindow, and also from the scrolling experience in the thumbnail view. [Impact] This bug affects all touchpad users in Precise. Touchscreen users may also be affected. [Development Fix] Not fixed. [Stable Fix] Upstream patch is currently under review in the upstream bugtracker. Once that patch is accepted, I will update the debdiff. [Text Case] 1. Open a multipage document in Evince 2. Open the thumbnail view 3. Scroll in the thumbnail view using a touchpad's scroll implementation (circular, side scrolling, or two finger scrolling) 4. Notice that the scrolling is smooth, without the jerky behaviour present in Gtk2 applications and applications in previous Ubuntu releases. 5. Repeat #3 in the document view 6. Notice that scrolling is jerky, like the behaviour in previous releases. [Regression Potential] There isn't much regression potential, as the codepath for smooth scrolling in GtkScrolledWindow has already been activated by default for all Gtk3 applications and is well tested in Precise. To manage notifications about this bug go to: https://bugs.launchpad.net/evince/+bug/981248/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
