87
edits
Changes
→DOMMouseScroll event vs. Scrolling
So, the contents can prevent scrolling. At that time, mouse wheel transaction isn't updated.
Note that DOMMouseScroll events are fired by the actual cursor position. So, by the mouse wheel transaction system, the scroll target and the target of the DOMMouseScroll event may be different even if the target of DOMMouseScroll is scrollable.
Windows version of Gecko 1.9.2 and earlier doesn't fire DOMMouseScroll events when the mouse cursor is on a windowed plug-in and it consumes native mouse wheel events. This is going to be improved in [https://bugzilla.mozilla.org/show_bug.cgi?id=483136 bug 483136].
= Acceleration system =
