Method: Event#wheel

Defined in:

lib/source/redshift/event.rb

#wheel ⇒ Object

call-seq:

evnt.wheel -> numeric or nil

Returns a floating point number representing the velocity of the wheel movement executed during evnt. Positive values indicate upward scrolling, negative values indicate downward scrolling. Returns nil if evnt did not involve the mouse wheel.

Document['#example'].listen(:mouse_wheel) {|element, event| puts event.wheel }

wheeling the mousewheel downward by a single “click” over element ‘#example’ produces:

-1

# File 'lib/source/redshift/event.rb', line 309

def wheel
  `this.__wheel__`
end