gecko-dev/widget/TouchEvents.h

167 lines
4.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_TouchEvents_h__
#define mozilla_TouchEvents_h__
#include <stdint.h>
#include "mozilla/dom/Touch.h"
#include "mozilla/MouseEvents.h"
#include "nsAutoPtr.h"
#include "nsIDOMSimpleGestureEvent.h"
#include "nsTArray.h"
namespace mozilla {
/******************************************************************************
* mozilla::WidgetGestureNotifyEvent
*
* This event is the first event generated when the user touches
* the screen with a finger, and it's meant to decide what kind
* of action we'll use for that touch interaction.
*
* The event is dispatched to the layout and based on what is underneath
* the initial contact point it's then decided if we should pan
* (finger scrolling) or drag the target element.
******************************************************************************/
class WidgetGestureNotifyEvent : public WidgetGUIEvent
{
public:
virtual WidgetGestureNotifyEvent* AsGestureNotifyEvent() MOZ_OVERRIDE
{
return this;
}
WidgetGestureNotifyEvent(bool aIsTrusted, uint32_t aMessage,
nsIWidget *aWidget) :
WidgetGUIEvent(aIsTrusted, aMessage, aWidget, NS_GESTURENOTIFY_EVENT),
panDirection(ePanNone), displayPanFeedback(false)
{
}
enum ePanDirection
{
ePanNone,
ePanVertical,
ePanHorizontal,
ePanBoth
};
ePanDirection panDirection;
bool displayPanFeedback;
// XXX Not tested by test_assign_event_data.html
void AssignGestureNotifyEventData(const WidgetGestureNotifyEvent& aEvent,
bool aCopyTargets)
{
AssignGUIEventData(aEvent, aCopyTargets);
panDirection = aEvent.panDirection;
displayPanFeedback = aEvent.displayPanFeedback;
}
};
/******************************************************************************
* mozilla::WidgetTouchEvent
******************************************************************************/
class WidgetSimpleGestureEvent : public WidgetMouseEventBase
{
public:
virtual WidgetSimpleGestureEvent* AsSimpleGestureEvent() MOZ_OVERRIDE
{
return this;
}
WidgetSimpleGestureEvent(bool aIsTrusted, uint32_t aMessage,
nsIWidget* aWidget, uint32_t aDirection,
double aDelta) :
WidgetMouseEventBase(aIsTrusted, aMessage, aWidget,
NS_SIMPLE_GESTURE_EVENT),
allowedDirections(0), direction(aDirection), delta(aDelta), clickCount(0)
{
}
WidgetSimpleGestureEvent(const WidgetSimpleGestureEvent& aOther) :
WidgetMouseEventBase(aOther.mFlags.mIsTrusted,
aOther.message, aOther.widget,
NS_SIMPLE_GESTURE_EVENT),
allowedDirections(aOther.allowedDirections), direction(aOther.direction),
delta(aOther.delta), clickCount(0)
{
}
// See nsIDOMSimpleGestureEvent for values
uint32_t allowedDirections;
// See nsIDOMSimpleGestureEvent for values
uint32_t direction;
// Delta for magnify and rotate events
double delta;
// The number of taps for tap events
uint32_t clickCount;
// XXX Not tested by test_assign_event_data.html
void AssignSimpleGestureEventData(const WidgetSimpleGestureEvent& aEvent,
bool aCopyTargets)
{
AssignMouseEventBaseData(aEvent, aCopyTargets);
// allowedDirections isn't copied
direction = aEvent.direction;
delta = aEvent.delta;
clickCount = aEvent.clickCount;
}
};
/******************************************************************************
* mozilla::WidgetTouchEvent
******************************************************************************/
class WidgetTouchEvent : public WidgetInputEvent
{
public:
virtual WidgetTouchEvent* AsTouchEvent() MOZ_OVERRIDE { return this; }
WidgetTouchEvent()
{
}
WidgetTouchEvent(bool aIsTrusted, WidgetTouchEvent* aEvent) :
WidgetInputEvent(aIsTrusted, aEvent->message, aEvent->widget,
NS_TOUCH_EVENT)
{
modifiers = aEvent->modifiers;
time = aEvent->time;
touches.AppendElements(aEvent->touches);
MOZ_COUNT_CTOR(WidgetTouchEvent);
}
WidgetTouchEvent(bool aIsTrusted, uint32_t aMessage, nsIWidget* aWidget) :
WidgetInputEvent(aIsTrusted, aMessage, aWidget, NS_TOUCH_EVENT)
{
MOZ_COUNT_CTOR(WidgetTouchEvent);
}
virtual ~WidgetTouchEvent()
{
MOZ_COUNT_DTOR(WidgetTouchEvent);
}
nsTArray<nsRefPtr<mozilla::dom::Touch>> touches;
void AssignTouchEventData(const WidgetTouchEvent& aEvent, bool aCopyTargets)
{
AssignInputEventData(aEvent, aCopyTargets);
// Currently, we don't need to copy touches.
}
};
} // namespace mozilla
#endif // mozilla_TouchEvents_h__