Function dummy_rustwlc::callback::pointer_scroll [−] [src]

pub fn pointer_scroll(callback: extern fn(view: WlcView, time: u32, mods: &KeyboardModifiers, axis: ScrollAxis, amount: [f64; 2]) -> bool)

Callback invoked on mouse scroll. Return true to block the scroll from the view.

Arguments

  • view: The WlcView (or output root) that was scrolled in
  • time: Timestamp
  • mods: Current pressed keyboard modifiers
  • axis: Which direction the scroll was in
  • amount: The first argument seems to be either 10 or -10 depending on up/down (or right/left if axis == ScrollAxis::Horizontal). The second one, when tested on a standard laptop trackpad, seems to be a double slightly above zero.