dom/events/MouseScrollEvent.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #include "mozilla/dom/MouseScrollEvent.h"
   7 #include "mozilla/MouseEvents.h"
   8 #include "prtime.h"
   9
  10 namespace mozilla {
  11 namespace dom {
  12
  13 MouseScrollEvent::MouseScrollEvent(EventTarget* aOwner,
  14                                    nsPresContext* aPresContext,
  15                                    WidgetMouseScrollEvent* aEvent)
  16   : MouseEvent(aOwner, aPresContext,
  17                aEvent ? aEvent : new WidgetMouseScrollEvent(false, 0, nullptr))
  18 {
  19   if (aEvent) {
  20     mEventIsInternal = false;
  21   } else {
  22     mEventIsInternal = true;
  23     mEvent->time = PR_Now();
  24     mEvent->refPoint.x = mEvent->refPoint.y = 0;
  25     static_cast<WidgetMouseEventBase*>(mEvent)->inputSource =
  26       nsIDOMMouseEvent::MOZ_SOURCE_UNKNOWN;
  27   }
  28
  29   mDetail = mEvent->AsMouseScrollEvent()->delta;
  30 }
  31
  32 NS_IMPL_ADDREF_INHERITED(MouseScrollEvent, MouseEvent)
  33 NS_IMPL_RELEASE_INHERITED(MouseScrollEvent, MouseEvent)
  34
  35 NS_INTERFACE_MAP_BEGIN(MouseScrollEvent)
  36   NS_INTERFACE_MAP_ENTRY(nsIDOMMouseScrollEvent)
  37 NS_INTERFACE_MAP_END_INHERITING(MouseEvent)
  38
  39 NS_IMETHODIMP
  40 MouseScrollEvent::InitMouseScrollEvent(const nsAString& aType,
  41                                        bool aCanBubble,
  42                                        bool aCancelable,
  43                                        nsIDOMWindow* aView,
  44                                        int32_t aDetail,
  45                                        int32_t aScreenX,
  46                                        int32_t aScreenY,
  47                                        int32_t aClientX,
  48                                        int32_t aClientY,
  49                                        bool aCtrlKey,
  50                                        bool aAltKey,
  51                                        bool aShiftKey,
  52                                        bool aMetaKey,
  53                                        uint16_t aButton,
  54                                        nsIDOMEventTarget* aRelatedTarget,
  55                                        int32_t aAxis)
  56 {
  57   nsresult rv =
  58     MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, aView, aDetail,
  59                                aScreenX, aScreenY, aClientX, aClientY,
  60                                aCtrlKey, aAltKey, aShiftKey, aMetaKey, aButton,
  61                                aRelatedTarget);
  62   NS_ENSURE_SUCCESS(rv, rv);
  63   mEvent->AsMouseScrollEvent()->isHorizontal = (aAxis == HORIZONTAL_AXIS);
  64   return NS_OK;
  65 }
  66
  67
  68 NS_IMETHODIMP
  69 MouseScrollEvent::GetAxis(int32_t* aResult)
  70 {
  71   NS_ENSURE_ARG_POINTER(aResult);
  72   *aResult = Axis();
  73   return NS_OK;
  74 }
  75
  76 int32_t
  77 MouseScrollEvent::Axis()
  78 {
  79   return mEvent->AsMouseScrollEvent()->isHorizontal ?
  80            static_cast<int32_t>(HORIZONTAL_AXIS) :
  81            static_cast<int32_t>(VERTICAL_AXIS);
  82 }
  83
  84 } // namespace dom
  85 } // namespace mozilla
  86
  87 using namespace mozilla;
  88 using namespace dom;
  89
  90 nsresult
  91 NS_NewDOMMouseScrollEvent(nsIDOMEvent** aInstancePtrResult,
  92                           EventTarget* aOwner,
  93                           nsPresContext* aPresContext,
  94                           WidgetMouseScrollEvent* aEvent)
  95 {
  96   MouseScrollEvent* it = new MouseScrollEvent(aOwner, aPresContext, aEvent);
  97   NS_ADDREF(it);
  98   *aInstancePtrResult = static_cast<Event*>(it);
  99   return NS_OK;
 100 }