michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef mozilla_dom_UIEvent_h_
michael@0: #define mozilla_dom_UIEvent_h_
michael@0: 
michael@0: #include "mozilla/Attributes.h"
michael@0: #include "mozilla/dom/Event.h"
michael@0: #include "mozilla/dom/UIEventBinding.h"
michael@0: #include "nsDeviceContext.h"
michael@0: #include "nsIDOMUIEvent.h"
michael@0: #include "nsLayoutUtils.h"
michael@0: #include "nsPresContext.h"
michael@0: 
michael@0: class nsINode;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: class UIEvent : public Event,
michael@0:                 public nsIDOMUIEvent
michael@0: {
michael@0: public:
michael@0:   UIEvent(EventTarget* aOwner,
michael@0:           nsPresContext* aPresContext,
michael@0:           WidgetGUIEvent* aEvent);
michael@0: 
michael@0:   NS_DECL_ISUPPORTS_INHERITED
michael@0:   NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(UIEvent, Event)
michael@0: 
michael@0:   // nsIDOMUIEvent Interface
michael@0:   NS_DECL_NSIDOMUIEVENT
michael@0: 
michael@0:   // Forward to Event
michael@0:   NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION
michael@0:   NS_IMETHOD DuplicatePrivateData() MOZ_OVERRIDE;
michael@0:   NS_IMETHOD_(void) Serialize(IPC::Message* aMsg, bool aSerializeInterfaceType) MOZ_OVERRIDE;
michael@0:   NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg, void** aIter) MOZ_OVERRIDE;
michael@0: 
michael@0:   static nsIntPoint CalculateScreenPoint(nsPresContext* aPresContext,
michael@0:                                          WidgetEvent* aEvent)
michael@0:   {
michael@0:     if (!aEvent ||
michael@0:         (aEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0:          aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0:          aEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0:          aEvent->eventStructType != NS_DRAG_EVENT &&
michael@0:          aEvent->eventStructType != NS_POINTER_EVENT &&
michael@0:          aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT)) {
michael@0:       return nsIntPoint(0, 0);
michael@0:     }
michael@0: 
michael@0:     WidgetGUIEvent* event = aEvent->AsGUIEvent();
michael@0:     if (!event->widget) {
michael@0:       return LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint);
michael@0:     }
michael@0: 
michael@0:     LayoutDeviceIntPoint offset = aEvent->refPoint +
michael@0:       LayoutDeviceIntPoint::FromUntyped(event->widget->WidgetToScreenOffset());
michael@0:     nscoord factor =
michael@0:       aPresContext->DeviceContext()->UnscaledAppUnitsPerDevPixel();
michael@0:     return nsIntPoint(nsPresContext::AppUnitsToIntCSSPixels(offset.x * factor),
michael@0:                       nsPresContext::AppUnitsToIntCSSPixels(offset.y * factor));
michael@0:   }
michael@0: 
michael@0:   static CSSIntPoint CalculateClientPoint(nsPresContext* aPresContext,
michael@0:                                           WidgetEvent* aEvent,
michael@0:                                           CSSIntPoint* aDefaultClientPoint)
michael@0:   {
michael@0:     if (!aEvent ||
michael@0:         (aEvent->eventStructType != NS_MOUSE_EVENT &&
michael@0:          aEvent->eventStructType != NS_MOUSE_SCROLL_EVENT &&
michael@0:          aEvent->eventStructType != NS_WHEEL_EVENT &&
michael@0:          aEvent->eventStructType != NS_DRAG_EVENT &&
michael@0:          aEvent->eventStructType != NS_POINTER_EVENT &&
michael@0:          aEvent->eventStructType != NS_SIMPLE_GESTURE_EVENT) ||
michael@0:         !aPresContext ||
michael@0:         !aEvent->AsGUIEvent()->widget) {
michael@0:       return aDefaultClientPoint
michael@0:              ? *aDefaultClientPoint
michael@0:              : CSSIntPoint(0, 0);
michael@0:     }
michael@0: 
michael@0:     nsIPresShell* shell = aPresContext->GetPresShell();
michael@0:     if (!shell) {
michael@0:       return CSSIntPoint(0, 0);
michael@0:     }
michael@0:     nsIFrame* rootFrame = shell->GetRootFrame();
michael@0:     if (!rootFrame) {
michael@0:       return CSSIntPoint(0, 0);
michael@0:     }
michael@0:     nsPoint pt =
michael@0:       nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
michael@0: 
michael@0:     return CSSIntPoint::FromAppUnitsRounded(pt);
michael@0:   }
michael@0: 
michael@0:   static already_AddRefed<UIEvent> Constructor(const GlobalObject& aGlobal,
michael@0:                                                const nsAString& aType,
michael@0:                                                const UIEventInit& aParam,
michael@0:                                                ErrorResult& aRv);
michael@0: 
michael@0:   virtual JSObject* WrapObject(JSContext* aCx) MOZ_OVERRIDE
michael@0:   {
michael@0:     return UIEventBinding::Wrap(aCx, this);
michael@0:   }
michael@0: 
michael@0:   nsIDOMWindow* GetView() const
michael@0:   {
michael@0:     return mView;
michael@0:   }
michael@0: 
michael@0:   int32_t Detail() const
michael@0:   {
michael@0:     return mDetail;
michael@0:   }
michael@0: 
michael@0:   int32_t LayerX() const
michael@0:   {
michael@0:     return GetLayerPoint().x;
michael@0:   }
michael@0: 
michael@0:   int32_t LayerY() const
michael@0:   {
michael@0:     return GetLayerPoint().y;
michael@0:   }
michael@0: 
michael@0:   int32_t PageX() const;
michael@0:   int32_t PageY() const;
michael@0: 
michael@0:   virtual uint32_t Which()
michael@0:   {
michael@0:     MOZ_ASSERT(mEvent->eventStructType != NS_KEY_EVENT,
michael@0:                "Key events should override Which()");
michael@0:     MOZ_ASSERT(mEvent->eventStructType != NS_MOUSE_EVENT,
michael@0:                "Mouse events should override Which()");
michael@0:     return 0;
michael@0:   }
michael@0: 
michael@0:   already_AddRefed<nsINode> GetRangeParent();
michael@0: 
michael@0:   int32_t RangeOffset() const;
michael@0: 
michael@0:   bool CancelBubble() const
michael@0:   {
michael@0:     return mEvent->mFlags.mPropagationStopped;
michael@0:   }
michael@0: 
michael@0:   bool IsChar() const;
michael@0: 
michael@0: protected:
michael@0:   // Internal helper functions
michael@0:   nsIntPoint GetMovementPoint();
michael@0:   nsIntPoint GetLayerPoint() const;
michael@0: 
michael@0:   nsCOMPtr<nsIDOMWindow> mView;
michael@0:   int32_t mDetail;
michael@0:   CSSIntPoint mClientPoint;
michael@0:   // Screenpoint is mEvent->refPoint.
michael@0:   nsIntPoint mLayerPoint;
michael@0:   CSSIntPoint mPagePoint;
michael@0:   nsIntPoint mMovementPoint;
michael@0:   bool mIsPointerLocked;
michael@0:   CSSIntPoint mLastClientPoint;
michael@0: 
michael@0:   static Modifiers ComputeModifierState(const nsAString& aModifiersList);
michael@0:   bool GetModifierStateInternal(const nsAString& aKey);
michael@0: };
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla
michael@0: 
michael@0: #define NS_FORWARD_TO_UIEVENT                               \
michael@0:   NS_FORWARD_NSIDOMUIEVENT(UIEvent::)                       \
michael@0:   NS_FORWARD_TO_EVENT_NO_SERIALIZATION_NO_DUPLICATION       \
michael@0:   NS_IMETHOD DuplicatePrivateData()                         \
michael@0:   {                                                         \
michael@0:     return UIEvent::DuplicatePrivateData();                 \
michael@0:   }                                                         \
michael@0:   NS_IMETHOD_(void) Serialize(IPC::Message* aMsg,           \
michael@0:                               bool aSerializeInterfaceType) \
michael@0:   {                                                         \
michael@0:     UIEvent::Serialize(aMsg, aSerializeInterfaceType);      \
michael@0:   }                                                         \
michael@0:   NS_IMETHOD_(bool) Deserialize(const IPC::Message* aMsg,   \
michael@0:                                 void** aIter)               \
michael@0:   {                                                         \
michael@0:     return UIEvent::Deserialize(aMsg, aIter);               \
michael@0:   }
michael@0: 
michael@0: #endif // mozilla_dom_UIEvent_h_