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_TouchEvents_h__
michael@0: #define mozilla_TouchEvents_h__
michael@0: 
michael@0: #include <stdint.h>
michael@0: 
michael@0: #include "mozilla/dom/Touch.h"
michael@0: #include "mozilla/MouseEvents.h"
michael@0: #include "nsAutoPtr.h"
michael@0: #include "nsIDOMSimpleGestureEvent.h"
michael@0: #include "nsTArray.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: /******************************************************************************
michael@0:  * mozilla::WidgetGestureNotifyEvent
michael@0:  *
michael@0:  * This event is the first event generated when the user touches
michael@0:  * the screen with a finger, and it's meant to decide what kind
michael@0:  * of action we'll use for that touch interaction.
michael@0:  *
michael@0:  * The event is dispatched to the layout and based on what is underneath
michael@0:  * the initial contact point it's then decided if we should pan
michael@0:  * (finger scrolling) or drag the target element.
michael@0:  ******************************************************************************/
michael@0: 
michael@0: class WidgetGestureNotifyEvent : public WidgetGUIEvent
michael@0: {
michael@0: public:
michael@0:   virtual WidgetGestureNotifyEvent* AsGestureNotifyEvent() MOZ_OVERRIDE
michael@0:   {
michael@0:     return this;
michael@0:   }
michael@0: 
michael@0:   WidgetGestureNotifyEvent(bool aIsTrusted, uint32_t aMessage,
michael@0:                            nsIWidget *aWidget) :
michael@0:     WidgetGUIEvent(aIsTrusted, aMessage, aWidget, NS_GESTURENOTIFY_EVENT),
michael@0:     panDirection(ePanNone), displayPanFeedback(false)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   virtual WidgetEvent* Duplicate() const MOZ_OVERRIDE
michael@0:   {
michael@0:     // XXX Looks like this event is handled only in PostHandleEvent() of
michael@0:     //     EventStateManager.  Therefore, it might be possible to handle this
michael@0:     //     in PreHandleEvent() and not to dispatch as a DOM event into the DOM
michael@0:     //     tree like ContentQueryEvent.  Then, this event doesn't need to
michael@0:     //     support Duplicate().
michael@0:     MOZ_ASSERT(eventStructType == NS_GESTURENOTIFY_EVENT,
michael@0:                "Duplicate() must be overridden by sub class");
michael@0:     // Not copying widget, it is a weak reference.
michael@0:     WidgetGestureNotifyEvent* result =
michael@0:       new WidgetGestureNotifyEvent(false, message, nullptr);
michael@0:     result->AssignGestureNotifyEventData(*this, true);
michael@0:     result->mFlags = mFlags;
michael@0:     return result;
michael@0:   }
michael@0: 
michael@0:   enum ePanDirection
michael@0:   {
michael@0:     ePanNone,
michael@0:     ePanVertical,
michael@0:     ePanHorizontal,
michael@0:     ePanBoth
michael@0:   };
michael@0: 
michael@0:   ePanDirection panDirection;
michael@0:   bool displayPanFeedback;
michael@0: 
michael@0:   void AssignGestureNotifyEventData(const WidgetGestureNotifyEvent& aEvent,
michael@0:                                     bool aCopyTargets)
michael@0:   {
michael@0:     AssignGUIEventData(aEvent, aCopyTargets);
michael@0: 
michael@0:     panDirection = aEvent.panDirection;
michael@0:     displayPanFeedback = aEvent.displayPanFeedback;
michael@0:   }
michael@0: };
michael@0: 
michael@0: /******************************************************************************
michael@0:  * mozilla::WidgetTouchEvent
michael@0:  ******************************************************************************/
michael@0: 
michael@0: class WidgetSimpleGestureEvent : public WidgetMouseEventBase
michael@0: {
michael@0: public:
michael@0:   virtual WidgetSimpleGestureEvent* AsSimpleGestureEvent() MOZ_OVERRIDE
michael@0:   {
michael@0:     return this;
michael@0:   }
michael@0: 
michael@0:   WidgetSimpleGestureEvent(bool aIsTrusted, uint32_t aMessage,
michael@0:                            nsIWidget* aWidget)
michael@0:     : WidgetMouseEventBase(aIsTrusted, aMessage, aWidget,
michael@0:                            NS_SIMPLE_GESTURE_EVENT)
michael@0:     , allowedDirections(0)
michael@0:     , direction(0)
michael@0:     , delta(0.0)
michael@0:     , clickCount(0)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   WidgetSimpleGestureEvent(const WidgetSimpleGestureEvent& aOther)
michael@0:     : WidgetMouseEventBase(aOther.mFlags.mIsTrusted, aOther.message,
michael@0:                            aOther.widget, NS_SIMPLE_GESTURE_EVENT)
michael@0:     , allowedDirections(aOther.allowedDirections)
michael@0:     , direction(aOther.direction)
michael@0:     , delta(aOther.delta)
michael@0:     , clickCount(0)
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   virtual WidgetEvent* Duplicate() const MOZ_OVERRIDE
michael@0:   {
michael@0:     MOZ_ASSERT(eventStructType == NS_SIMPLE_GESTURE_EVENT,
michael@0:                "Duplicate() must be overridden by sub class");
michael@0:     // Not copying widget, it is a weak reference.
michael@0:     WidgetSimpleGestureEvent* result =
michael@0:       new WidgetSimpleGestureEvent(false, message, nullptr);
michael@0:     result->AssignSimpleGestureEventData(*this, true);
michael@0:     result->mFlags = mFlags;
michael@0:     return result;
michael@0:   }
michael@0: 
michael@0:   // See nsIDOMSimpleGestureEvent for values
michael@0:   uint32_t allowedDirections;
michael@0:   // See nsIDOMSimpleGestureEvent for values
michael@0:   uint32_t direction;
michael@0:   // Delta for magnify and rotate events
michael@0:   double delta;
michael@0:   // The number of taps for tap events
michael@0:   uint32_t clickCount;
michael@0: 
michael@0:   // XXX Not tested by test_assign_event_data.html
michael@0:   void AssignSimpleGestureEventData(const WidgetSimpleGestureEvent& aEvent,
michael@0:                                     bool aCopyTargets)
michael@0:   {
michael@0:     AssignMouseEventBaseData(aEvent, aCopyTargets);
michael@0: 
michael@0:     // allowedDirections isn't copied
michael@0:     direction = aEvent.direction;
michael@0:     delta = aEvent.delta;
michael@0:     clickCount = aEvent.clickCount;
michael@0:   }
michael@0: };
michael@0: 
michael@0: /******************************************************************************
michael@0:  * mozilla::WidgetTouchEvent
michael@0:  ******************************************************************************/
michael@0: 
michael@0: class WidgetTouchEvent : public WidgetInputEvent
michael@0: {
michael@0: public:
michael@0:   virtual WidgetTouchEvent* AsTouchEvent() MOZ_OVERRIDE { return this; }
michael@0: 
michael@0:   WidgetTouchEvent()
michael@0:   {
michael@0:   }
michael@0: 
michael@0:   WidgetTouchEvent(const WidgetTouchEvent& aOther) :
michael@0:     WidgetInputEvent(aOther.mFlags.mIsTrusted, aOther.message, aOther.widget,
michael@0:                      NS_TOUCH_EVENT)
michael@0:   {
michael@0:     modifiers = aOther.modifiers;
michael@0:     time = aOther.time;
michael@0:     touches.AppendElements(aOther.touches);
michael@0:     mFlags.mCancelable = message != NS_TOUCH_CANCEL;
michael@0:     MOZ_COUNT_CTOR(WidgetTouchEvent);
michael@0:   }
michael@0: 
michael@0:   WidgetTouchEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget) :
michael@0:     WidgetInputEvent(aIsTrusted, aMessage, aWidget, NS_TOUCH_EVENT)
michael@0:   {
michael@0:     MOZ_COUNT_CTOR(WidgetTouchEvent);
michael@0:     mFlags.mCancelable = message != NS_TOUCH_CANCEL;
michael@0:   }
michael@0: 
michael@0:   virtual ~WidgetTouchEvent()
michael@0:   {
michael@0:     MOZ_COUNT_DTOR(WidgetTouchEvent);
michael@0:   }
michael@0: 
michael@0:   virtual WidgetEvent* Duplicate() const MOZ_OVERRIDE
michael@0:   {
michael@0:     MOZ_ASSERT(eventStructType == NS_TOUCH_EVENT,
michael@0:                "Duplicate() must be overridden by sub class");
michael@0:     // Not copying widget, it is a weak reference.
michael@0:     WidgetTouchEvent* result = new WidgetTouchEvent(false, message, nullptr);
michael@0:     result->AssignTouchEventData(*this, true);
michael@0:     result->mFlags = mFlags;
michael@0:     return result;
michael@0:   }
michael@0: 
michael@0:   nsTArray<nsRefPtr<mozilla::dom::Touch>> touches;
michael@0: 
michael@0:   void AssignTouchEventData(const WidgetTouchEvent& aEvent, bool aCopyTargets)
michael@0:   {
michael@0:     AssignInputEventData(aEvent, aCopyTargets);
michael@0: 
michael@0:     // Assign*EventData() assume that they're called only new instance.
michael@0:     MOZ_ASSERT(touches.IsEmpty());
michael@0:     touches.AppendElements(aEvent.touches);
michael@0:   }
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: 
michael@0: #endif // mozilla_TouchEvents_h__