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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
/*
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* Copyright (C) 2001 Peter Kelly (pmk@post.com)
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* Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
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* Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
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* Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved.
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* Copyright (C) 2013 Samsung Electronics. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
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#define SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
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#include "sky/engine/core/events/EventDispatchMediator.h"
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#include "sky/engine/core/events/MouseEvent.h"
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#include "sky/engine/platform/geometry/FloatPoint.h"
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namespace blink {
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class PlatformWheelEvent;
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struct WheelEventInit : public MouseEventInit {
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WheelEventInit();
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double deltaX;
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double deltaY;
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double deltaZ;
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int wheelDeltaX; // Deprecated.
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int wheelDeltaY; // Deprecated.
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unsigned deltaMode;
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};
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class WheelEvent final : public MouseEvent {
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DEFINE_WRAPPERTYPEINFO();
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public:
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enum { TickMultiplier = 120 };
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enum DeltaMode {
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DOM_DELTA_PIXEL = 0,
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DOM_DELTA_LINE,
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DOM_DELTA_PAGE
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};
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static PassRefPtr<WheelEvent> create()
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{
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return adoptRef(new WheelEvent);
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}
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static PassRefPtr<WheelEvent> create(const AtomicString& type, const WheelEventInit& initializer)
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{
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return adoptRef(new WheelEvent(type, initializer));
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}
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static PassRefPtr<WheelEvent> create(const FloatPoint& wheelTicks,
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const FloatPoint& rawDelta, unsigned deltaMode, PassRefPtr<AbstractView> view,
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const IntPoint& screenLocation, const IntPoint& pageLocation,
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bool ctrlKey, bool altKey, bool shiftKey, bool metaKey)
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{
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return adoptRef(new WheelEvent(wheelTicks, rawDelta, deltaMode, view,
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screenLocation, pageLocation, ctrlKey, altKey, shiftKey, metaKey));
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}
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double deltaX() const { return m_deltaX; } // Positive when scrolling right.
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double deltaY() const { return m_deltaY; } // Positive when scrolling down.
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double deltaZ() const { return m_deltaZ; }
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int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated.
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int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right.
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int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down.
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unsigned deltaMode() const { return m_deltaMode; }
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float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMultiplier; }
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float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMultiplier; }
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virtual const AtomicString& interfaceName() const override;
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virtual bool isMouseEvent() const override;
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virtual bool isWheelEvent() const override;
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private:
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WheelEvent();
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WheelEvent(const AtomicString&, const WheelEventInit&);
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WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta,
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unsigned, PassRefPtr<AbstractView>, const IntPoint& screenLocation, const IntPoint& pageLocation,
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bool ctrlKey, bool altKey, bool shiftKey, bool metaKey);
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IntPoint m_wheelDelta;
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double m_deltaX;
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double m_deltaY;
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double m_deltaZ;
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unsigned m_deltaMode;
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};
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DEFINE_EVENT_TYPE_CASTS(WheelEvent);
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class WheelEventDispatchMediator final : public EventDispatchMediator {
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public:
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static PassRefPtr<WheelEventDispatchMediator> create(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
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private:
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WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtr<AbstractView>);
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WheelEvent* event() const;
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virtual bool dispatchEvent(EventDispatcher*) const override;
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};
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} // namespace blink
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#endif // SKY_ENGINE_CORE_EVENTS_WHEELEVENT_H_
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