dom/events/MouseScrollEvent.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "mozilla/dom/MouseScrollEvent.h"
   8 #include "mozilla/dom/MouseEventBinding.h"
   9 #include "mozilla/MouseEvents.h"
  10 #include "prtime.h"
  11
  12 namespace mozilla::dom {
  13
  14 MouseScrollEvent::MouseScrollEvent(EventTarget* aOwner,
  15                                    nsPresContext* aPresContext,
  16                                    WidgetMouseScrollEvent* aEvent)
  17     : MouseEvent(aOwner, aPresContext,
  18                  aEvent
  19                      ? aEvent
  20                      : new WidgetMouseScrollEvent(false, eVoidEvent, nullptr)) {
  21   if (aEvent) {
  22     mEventIsInternal = false;
  23   } else {
  24     mEventIsInternal = true;
  25     mEvent->mRefPoint = LayoutDeviceIntPoint(0, 0);
  26     static_cast<WidgetMouseEventBase*>(mEvent)->mInputSource =
  27         MouseEvent_Binding::MOZ_SOURCE_UNKNOWN;
  28   }
  29
  30   mDetail = mEvent->AsMouseScrollEvent()->mDelta;
  31 }
  32
  33 void MouseScrollEvent::InitMouseScrollEvent(
  34     const nsAString& aType, bool aCanBubble, bool aCancelable,
  35     nsGlobalWindowInner* aView, int32_t aDetail, int32_t aScreenX,
  36     int32_t aScreenY, int32_t aClientX, int32_t aClientY, bool aCtrlKey,
  37     bool aAltKey, bool aShiftKey, bool aMetaKey, uint16_t aButton,
  38     EventTarget* aRelatedTarget, int32_t aAxis) {
  39   NS_ENSURE_TRUE_VOID(!mEvent->mFlags.mIsBeingDispatched);
  40
  41   MouseEvent::InitMouseEvent(aType, aCanBubble, aCancelable, aView, aDetail,
  42                              aScreenX, aScreenY, aClientX, aClientY, aCtrlKey,
  43                              aAltKey, aShiftKey, aMetaKey, aButton,
  44                              aRelatedTarget);
  45   mEvent->AsMouseScrollEvent()->mIsHorizontal =
  46       (aAxis == MouseScrollEvent_Binding::HORIZONTAL_AXIS);
  47 }
  48
  49 int32_t MouseScrollEvent::Axis() {
  50   return mEvent->AsMouseScrollEvent()->mIsHorizontal
  51              ? MouseScrollEvent_Binding::HORIZONTAL_AXIS
  52              : MouseScrollEvent_Binding::VERTICAL_AXIS;
  53 }
  54
  55 }  // namespace mozilla::dom
  56
  57 using namespace mozilla;
  58 using namespace dom;
  59
  60 already_AddRefed<MouseScrollEvent> NS_NewDOMMouseScrollEvent(
  61     EventTarget* aOwner, nsPresContext* aPresContext,
  62     WidgetMouseScrollEvent* aEvent) {
  63   RefPtr<MouseScrollEvent> it =
  64       new MouseScrollEvent(aOwner, aPresContext, aEvent);
  65   return it.forget();
  66 }