> On Ноев. 30, 2015, 1:25 преди обяд, David Edmundson wrote: > > >MoseMove is too expensive event to be redirect, it can cause problems on > > >slow CPU's. > > > > I don't see how. > > It's no different to when the mouse is actually over the containment. > > > > The case for when you're in the 4px margin at the edge of the panel seems > > like it must be tiny. > > Anthony Fieroni wrote: > First of all, you don't understaind the problem at all. Every postEvent > is expensive, not for allocating memory, case event is append to queque. Here > problem is simple - QEvent::Leave is append to queque *before* MouseMove, > this behavior can be easy preproduce at slower CPU's like mine. To make > redirect on evey mousemove is not only stupid, it's more expencive than any > other event.
Even more, on lower CPU event queque may increase it size case busy processor, this can cause slowdowns, flickers, example: widgets in system tray when has expand view by click on item, task window *must not* seen in taskmanager, but some time on lower CPU, when it be busy, postEvent is appended *after* event that window must be ignore for taskmanager, this cause visual flicker in taskmanager. http://tinypic.com/player.php?v=6ft8gn%3E&s=9 You can see blue flicker in taskmanager, cause postEvent is expensive when CPU is busy, this cannot see on better CPU. - Anthony ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://git.reviewboard.kde.org/r/126175/#review88931 ----------------------------------------------------------- On Ноев. 28, 2015, 5:30 преди обяд, Anthony Fieroni wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://git.reviewboard.kde.org/r/126175/ > ----------------------------------------------------------- > > (Updated Ноев. 28, 2015, 5:30 преди обяд) > > > Review request for Plasma, David Edmundson and Marco Martin. > > > Bugs: 354651 > https://bugs.kde.org/show_bug.cgi?id=354651 > > > Repository: plasma-workspace > > > Description > ------- > > You can see videos in bug repot > > > Diffs > ----- > > shell/panelview.cpp 3407501 > > Diff: https://git.reviewboard.kde.org/r/126175/diff/ > > > Testing > ------- > > I test patch and all works as expected. > http://doc.qt.io/qt-5/qevent.html > QEvent::Leave 11 Mouse leaves widget's boundaries. > > > Thanks, > > Anthony Fieroni > >
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