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/*
* Copyright (C) 2018 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "EventNames.h"
#include "MouseEvent.h"
#include "Node.h"
#include "PointerEventTypeNames.h"
#include "PointerID.h"
#include <wtf/text/WTFString.h>
#if ENABLE(TOUCH_EVENTS) && PLATFORM(IOS_FAMILY)
#include "PlatformTouchEventIOS.h"
#endif
#if ENABLE(TOUCH_EVENTS) && PLATFORM(WPE)
#include "PlatformTouchEvent.h"
#endif
namespace WebCore {
class Node;
class PointerEvent final : public MouseEvent {
WTF_MAKE_ISO_ALLOCATED(PointerEvent);
public:
struct Init : MouseEventInit {
PointerID pointerId { mousePointerID };
double width { 1 };
double height { 1 };
float pressure { 0 };
float tangentialPressure { 0 };
long tiltX { 0 };
long tiltY { 0 };
long twist { 0 };
String pointerType { mousePointerEventType() };
bool isPrimary { false };
};
enum class IsPrimary : bool { No, Yes };
static Ref<PointerEvent> create(const AtomString& type, Init&& initializer)
{
return adoptRef(*new PointerEvent(type, WTFMove(initializer)));
}
static Ref<PointerEvent> createForPointerCapture(const AtomString& type, PointerID pointerId, bool isPrimary, String pointerType)
{
Init initializer;
initializer.bubbles = true;
initializer.pointerId = pointerId;
initializer.isPrimary = isPrimary;
initializer.pointerType = pointerType;
return adoptRef(*new PointerEvent(type, WTFMove(initializer)));
}
static Ref<PointerEvent> createForBindings()
{
return adoptRef(*new PointerEvent);
}
static RefPtr<PointerEvent> create(MouseButton, const MouseEvent&, PointerID, const String& pointerType);
static Ref<PointerEvent> create(const AtomString& type, MouseButton, const MouseEvent&, PointerID, const String& pointerType);
static Ref<PointerEvent> create(const AtomString& type, PointerID, const String& pointerType, IsPrimary = IsPrimary::No);
#if ENABLE(TOUCH_EVENTS) && (PLATFORM(IOS_FAMILY) || PLATFORM(WPE))
static Ref<PointerEvent> create(const PlatformTouchEvent&, unsigned touchIndex, bool isPrimary, Ref<WindowProxy>&&, const IntPoint& touchDelta = { });
static Ref<PointerEvent> create(const AtomString& type, const PlatformTouchEvent&, unsigned touchIndex, bool isPrimary, Ref<WindowProxy>&&, const IntPoint& touchDelta = { });
#endif
virtual ~PointerEvent();
PointerID pointerId() const { return m_pointerId; }
double width() const { return m_width; }
double height() const { return m_height; }
float pressure() const { return m_pressure; }
float tangentialPressure() const { return m_tangentialPressure; }
long tiltX() const { return m_tiltX; }
long tiltY() const { return m_tiltY; }
long twist() const { return m_twist; }
String pointerType() const { return m_pointerType; }
bool isPrimary() const { return m_isPrimary; }
bool isPointerEvent() const final { return true; }
// https://w3c.github.io/pointerevents/#attributes-and-default-actions
// Many user agents expose non-standard attributes fromElement and toElement in MouseEvents to
// support legacy content. In those user agents, the values of those (inherited) attributes in
// PointerEvents must be null to encourage the use of the standardized alternates (i.e. target
// and relatedTarget).
RefPtr<Node> toElement() const final { return nullptr; }
RefPtr<Node> fromElement() const final { return nullptr; }
EventInterface eventInterface() const override;
static bool typeIsUpOrDown(const AtomString& type);
static MouseButton buttonForType(const AtomString& type) { return !typeIsUpOrDown(type) ? MouseButton::PointerHasNotChanged : MouseButton::Left; }
private:
static bool typeIsEnterOrLeave(const AtomString& type);
static CanBubble typeCanBubble(const AtomString& type) { return typeIsEnterOrLeave(type) ? CanBubble::No : CanBubble::Yes; }
static IsCancelable typeIsCancelable(const AtomString& type) { return typeIsEnterOrLeave(type) ? IsCancelable::No : IsCancelable::Yes; }
static IsComposed typeIsComposed(const AtomString& type) { return typeIsEnterOrLeave(type) ? IsComposed::No : IsComposed::Yes; }
static unsigned short buttonsForType(const AtomString& type)
{
// We have contact with the touch surface for most events except when we've released the touch or canceled it.
auto& eventNames = WebCore::eventNames();
return (type == eventNames.pointerupEvent || type == eventNames.pointeroutEvent || type == eventNames.pointerleaveEvent || type == eventNames.pointercancelEvent) ? 0 : 1;
}
static float pressureForPressureInsensitiveInputDevices(unsigned short buttons)
{
// https://www.w3.org/TR/pointerevents/#dfn-active-buttons-state
bool isInActiveButtonsState = buttons;
// https://www.w3.org/TR/pointerevents/#dom-pointerevent-pressure
return isInActiveButtonsState ? 0.5 : 0;
}
PointerEvent();
PointerEvent(const AtomString&, Init&&);
PointerEvent(const AtomString& type, MouseButton, const MouseEvent&, PointerID, const String& pointerType);
PointerEvent(const AtomString& type, PointerID, const String& pointerType, IsPrimary);
#if ENABLE(TOUCH_EVENTS) && (PLATFORM(IOS_FAMILY) || PLATFORM(WPE))
PointerEvent(const AtomString& type, const PlatformTouchEvent&, IsCancelable isCancelable, unsigned touchIndex, bool isPrimary, Ref<WindowProxy>&&, const IntPoint& touchDelta = { });
#endif
PointerID m_pointerId { mousePointerID };
double m_width { 1 };
double m_height { 1 };
float m_pressure { 0 };
float m_tangentialPressure { 0 };
long m_tiltX { 0 };
long m_tiltY { 0 };
long m_twist { 0 };
String m_pointerType { mousePointerEventType() };
bool m_isPrimary { false };
};
inline bool PointerEvent::typeIsEnterOrLeave(const AtomString& type)
{
auto& eventNames = WebCore::eventNames();
return type == eventNames.pointerenterEvent || type == eventNames.pointerleaveEvent;
}
inline bool PointerEvent::typeIsUpOrDown(const AtomString& type)
{
auto& eventNames = WebCore::eventNames();
return type == eventNames.pointerupEvent || type == eventNames.pointerdownEvent;
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_EVENT(PointerEvent)
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