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/*
* Copyright (C) 2011 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#ifndef PlatformEvent_h
#define PlatformEvent_h
#include "wtf/Allocator.h"
#include "wtf/Noncopyable.h"
#include "wtf/Time.h"
namespace blink {
class PlatformEvent {
public:
enum EventType {
NoType = 0,
// PlatformMouseEvent
MouseMoved,
MousePressed,
MouseReleased,
MouseScroll,
// PlatformTouchEvent
TouchStart,
TouchMove,
TouchEnd,
TouchCancel,
TouchScrollStarted,
};
// These values are direct mappings of the values in WebInputEvent so the
// values can be cast between the enumerations. static_asserts checking this
// are in web/WebInputEventConversion.cpp.
enum Modifiers {
NoModifiers = 0,
ShiftKey = 1 << 0,
CtrlKey = 1 << 1,
AltKey = 1 << 2,
MetaKey = 1 << 3,
IsKeyPad = 1 << 4,
IsAutoRepeat = 1 << 5,
LeftButtonDown = 1 << 6,
MiddleButtonDown = 1 << 7,
RightButtonDown = 1 << 8,
CapsLockOn = 1 << 9,
NumLockOn = 1 << 10,
IsLeft = 1 << 11,
IsRight = 1 << 12,
IsTouchAccessibility = 1 << 13,
IsComposing = 1 << 14,
AltGrKey = 1 << 15,
FnKey = 1 << 16,
SymbolKey = 1 << 17,
ScrollLockOn = 1 << 18,
// The set of non-stateful modifiers that specifically change the
// interpretation of the key being pressed. For example; IsLeft,
// IsRight, IsComposing don't change the meaning of the key
// being pressed. NumLockOn, ScrollLockOn, CapsLockOn are stateful
// and don't indicate explicit depressed state.
KeyModifiers =
SymbolKey | FnKey | AltGrKey | MetaKey | AltKey | CtrlKey | ShiftKey,
};
enum RailsMode {
RailsModeFree = 0,
RailsModeHorizontal = 1,
RailsModeVertical = 2,
};
// These values are direct mappings of the values in WebInputEvent
// so the values can be cast between the enumerations. static_asserts
// checking this are in web/WebInputEventConversion.cpp.
enum DispatchType {
Blocking,
EventNonBlocking,
// All listeners are passive.
ListenersNonBlockingPassive,
// This value represents a state which would have normally blocking
// but was forced to be non-blocking during fling; not cancelable.
ListenersForcedNonBlockingDueToFling,
};
EventType type() const { return static_cast<EventType>(m_type); }
bool shiftKey() const { return m_modifiers & ShiftKey; }
bool ctrlKey() const { return m_modifiers & CtrlKey; }
bool altKey() const { return m_modifiers & AltKey; }
bool metaKey() const { return m_modifiers & MetaKey; }
Modifiers getModifiers() const { return static_cast<Modifiers>(m_modifiers); }
TimeTicks timestamp() const { return m_timestamp; }
protected:
PlatformEvent() : m_type(NoType), m_modifiers() {}
explicit PlatformEvent(EventType type) : m_type(type), m_modifiers(0) {}
PlatformEvent(EventType type, Modifiers modifiers, TimeTicks timestamp)
: m_type(type), m_modifiers(modifiers), m_timestamp(timestamp) {}
// Explicit protected destructor so that people don't accidentally
// delete a PlatformEvent.
~PlatformEvent() {}
unsigned m_type;
unsigned m_modifiers;
TimeTicks m_timestamp;
};
} // namespace blink
#endif // PlatformEvent_h
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