tor-browser

The Tor Browser
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MouseScrollEvent.cpp (2520B)

      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 "MouseScrollEvent.h"
      8 
      9 #include "mozilla/MouseEvents.h"
     10 #include "mozilla/dom/MouseEventBinding.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::InitMouseScrollEventInternal(
     34    const nsAString& aType, bool aCanBubble, bool aCancelable,
     35    nsGlobalWindowInner* aView, int32_t aDetail, double aScreenX,
     36    double aScreenY, double aClientX, double 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::InitMouseEventInternal(aType, aCanBubble, aCancelable, aView,
     42                                     aDetail, aScreenX, aScreenY, aClientX,
     43                                     aClientY, aCtrlKey, aAltKey, aShiftKey,
     44                                     aMetaKey, aButton, 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 }