The Tor Browser: dom/events/WheelEvent.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim: set ts=2 et sw=2 tw=80: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     5  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef mozilla_dom_WheelEvent_h_

     8 #define mozilla_dom_WheelEvent_h_

    10 #include "nsIDOMWheelEvent.h"

    11 #include "mozilla/dom/MouseEvent.h"

    12 #include "mozilla/dom/WheelEventBinding.h"

    13 #include "mozilla/EventForwards.h"

    15 namespace mozilla {

    16 namespace dom {

    18 class WheelEvent : public MouseEvent,

    19                    public nsIDOMWheelEvent

    20 {

    21 public:

    22   WheelEvent(EventTarget* aOwner,

    23              nsPresContext* aPresContext,

    24              WidgetWheelEvent* aWheelEvent);

    26   NS_DECL_ISUPPORTS_INHERITED

    28   // nsIDOMWheelEvent Interface

    29   NS_DECL_NSIDOMWHEELEVENT

    31   // Forward to base class

    32   NS_FORWARD_TO_MOUSEEVENT

    34   static

    35   already_AddRefed<WheelEvent> Constructor(const GlobalObject& aGlobal,

    36                                            const nsAString& aType,

    37                                            const WheelEventInit& aParam,

    38                                            ErrorResult& aRv);

    40   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE

    41   {

    42     return WheelEventBinding::Wrap(aCx, this);

    43   }

    45   // NOTE: DeltaX(), DeltaY() and DeltaZ() return CSS pixels when deltaMode is

    46   //       DOM_DELTA_PIXEL. (The internal event's delta values are device pixels

    47   //       if it's dispatched by widget)

    48   double DeltaX();

    49   double DeltaY();

    50   double DeltaZ();

    51   uint32_t DeltaMode();

    53 private:

    54   int32_t mAppUnitsPerDevPixel;

    55 };

    57 } // namespace dom

    58 } // namespace mozilla

    60 #endif // mozilla_dom_WheelEvent_h_

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