1/* 2 * Copyright (C) 2001 Peter Kelly (pmk@post.com) 3 * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de) 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) 5 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010, 2013 Apple Inc. All rights reserved. 6 * Copyright (C) 2013 Samsung Electronics. All rights reserved. 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public License 19 * along with this library; see the file COPYING.LIB. If not, write to 20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 * 23 */ 24 25#ifndef WheelEvent_h 26#define WheelEvent_h 27 28#include "FloatPoint.h" 29#include "MouseEvent.h" 30#include "PlatformWheelEvent.h" 31 32namespace WebCore { 33 34class PlatformWheelEvent; 35 36struct WheelEventInit : public MouseEventInit { 37 WheelEventInit(); 38 39 double deltaX; 40 double deltaY; 41 double deltaZ; 42 unsigned deltaMode; 43 int wheelDeltaX; // Deprecated. 44 int wheelDeltaY; // Deprecated. 45}; 46 47class WheelEvent : public MouseEvent { 48public: 49 enum { TickMultiplier = 120 }; 50 51 enum DeltaMode { 52 DOM_DELTA_PIXEL = 0, 53 DOM_DELTA_LINE, 54 DOM_DELTA_PAGE 55 }; 56 57 static PassRefPtr<WheelEvent> create() 58 { 59 return adoptRef(new WheelEvent); 60 } 61 62 static PassRefPtr<WheelEvent> create(const AtomicString& type, const WheelEventInit& initializer) 63 { 64 return adoptRef(new WheelEvent(type, initializer)); 65 } 66 67 static PassRefPtr<WheelEvent> create(const PlatformWheelEvent& event, PassRefPtr<AbstractView> view) 68 { 69 return adoptRef(new WheelEvent(event, view)); 70 } 71 72 void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>, 73 int screenX, int screenY, int pageX, int pageY, 74 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey); 75 76 void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>, 77 int screenX, int screenY, int pageX, int pageY, 78 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey); 79 80 double deltaX() const { return m_deltaX; } // Positive when scrolling right. 81 double deltaY() const { return m_deltaY; } // Positive when scrolling down. 82 double deltaZ() const { return m_deltaZ; } 83 int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated. 84 int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right. 85 int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down. 86 unsigned deltaMode() const { return m_deltaMode; } 87 88 bool webkitDirectionInvertedFromDevice() const { return m_directionInvertedFromDevice; } 89 // Needed for Objective-C legacy support 90 bool isHorizontal() const { return m_wheelDelta.x(); } 91 92 virtual EventInterface eventInterface() const override; 93 virtual bool isMouseEvent() const override; 94 95#if PLATFORM(MAC) 96 PlatformWheelEventPhase phase() const { return m_phase; } 97 PlatformWheelEventPhase momentumPhase() const { return m_momentumPhase; } 98#endif 99 100private: 101 WheelEvent(); 102 WheelEvent(const AtomicString&, const WheelEventInit&); 103 WheelEvent(const PlatformWheelEvent&, PassRefPtr<AbstractView>); 104 105 virtual bool isWheelEvent() const override; 106 107 IntPoint m_wheelDelta; 108 double m_deltaX; 109 double m_deltaY; 110 double m_deltaZ; 111 unsigned m_deltaMode; 112 bool m_directionInvertedFromDevice; 113 114#if PLATFORM(MAC) 115 PlatformWheelEventPhase m_phase; 116 PlatformWheelEventPhase m_momentumPhase; 117#endif 118}; 119 120EVENT_TYPE_CASTS(WheelEvent) 121 122} // namespace WebCore 123 124#endif // WheelEvent_h 125