gecko-dev/dom/events/WheelEvent.h
Olli Pettay 3b8be5cd0d Bug 1084421 - Only Events with a wrapper should trigger GC more likely, r=mccr8
--HG--
extra : rebase_source : 398e18dfc3d103ee139cc3c5d49710855c925e82
2014-10-18 02:16:58 +03:00

64 lines
1.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_WheelEvent_h_
#define mozilla_dom_WheelEvent_h_
#include "nsIDOMWheelEvent.h"
#include "mozilla/dom/MouseEvent.h"
#include "mozilla/dom/WheelEventBinding.h"
#include "mozilla/EventForwards.h"
namespace mozilla {
namespace dom {
class WheelEvent : public MouseEvent,
public nsIDOMWheelEvent
{
public:
WheelEvent(EventTarget* aOwner,
nsPresContext* aPresContext,
WidgetWheelEvent* aWheelEvent);
NS_DECL_ISUPPORTS_INHERITED
// nsIDOMWheelEvent Interface
NS_DECL_NSIDOMWHEELEVENT
// Forward to base class
NS_FORWARD_TO_MOUSEEVENT
static
already_AddRefed<WheelEvent> Constructor(const GlobalObject& aGlobal,
const nsAString& aType,
const WheelEventInit& aParam,
ErrorResult& aRv);
virtual JSObject* WrapObjectInternal(JSContext* aCx) MOZ_OVERRIDE
{
return WheelEventBinding::Wrap(aCx, this);
}
// NOTE: DeltaX(), DeltaY() and DeltaZ() return CSS pixels when deltaMode is
// DOM_DELTA_PIXEL. (The internal event's delta values are device pixels
// if it's dispatched by widget)
double DeltaX();
double DeltaY();
double DeltaZ();
uint32_t DeltaMode();
protected:
~WheelEvent() {}
private:
int32_t mAppUnitsPerDevPixel;
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_WheelEvent_h_