1 /* 2 * Copyright (C) 2001 Peter Kelly (pmk (at) post.com) 3 * Copyright (C) 2001 Tobias Anton (anton (at) stud.fbi.fh-darmstadt.de) 4 * Copyright (C) 2006 Samuel Weinig (sam.weinig (at) gmail.com) 5 * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Library General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Library General Public License for more details. 16 * 17 * You should have received a copy of the GNU Library General Public License 18 * along with this library; see the file COPYING.LIB. If not, write to 19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 20 * Boston, MA 02110-1301, USA. 21 * 22 */ 23 24 #ifndef WheelEvent_h 25 #define WheelEvent_h 26 27 #include "MouseRelatedEvent.h" 28 29 namespace WebCore { 30 31 // extension: mouse wheel event 32 class WheelEvent : public MouseRelatedEvent { 33 public: 34 enum Granularity { Pixel, Line, Page }; 35 36 static PassRefPtr<WheelEvent> create() 37 { 38 return adoptRef(new WheelEvent); 39 } 40 static PassRefPtr<WheelEvent> create(float wheelTicksX, float wheelTicksY, 41 float rawDeltaX, float rawDeltaY, Granularity granularity, PassRefPtr<AbstractView> view, 42 int screenX, int screenY, int pageX, int pageY, 43 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey) 44 { 45 return adoptRef(new WheelEvent(wheelTicksX, wheelTicksY, rawDeltaX, rawDeltaY, 46 granularity, view, screenX, screenY, pageX, pageY, 47 ctrlKey, altKey, shiftKey, metaKey)); 48 } 49 50 void initWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>, 51 int screenX, int screenY, int pageX, int pageY, 52 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey); 53 54 void initWebKitWheelEvent(int rawDeltaX, int rawDeltaY, PassRefPtr<AbstractView>, 55 int screenX, int screenY, int pageX, int pageY, 56 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey); 57 58 int wheelDelta() const { if (m_wheelDeltaY == 0) return m_wheelDeltaX; return m_wheelDeltaY; } 59 int wheelDeltaX() const { return m_wheelDeltaX; } 60 int wheelDeltaY() const { return m_wheelDeltaY; } 61 int rawDeltaX() const { return m_rawDeltaX; } 62 int rawDeltaY() const { return m_rawDeltaY; } 63 Granularity granularity() const { return m_granularity; } 64 65 // Needed for Objective-C legacy support 66 bool isHorizontal() const { return m_wheelDeltaX; } 67 68 private: 69 WheelEvent(); 70 WheelEvent(float wheelTicksX, float wheelTicksY, float rawDeltaX, float rawDeltaY, 71 Granularity granularity, PassRefPtr<AbstractView>, 72 int screenX, int screenY, int pageX, int pageY, 73 bool ctrlKey, bool altKey, bool shiftKey, bool metaKey); 74 75 virtual bool isWheelEvent() const; 76 77 int m_wheelDeltaX; 78 int m_wheelDeltaY; 79 80 int m_rawDeltaX; 81 int m_rawDeltaY; 82 Granularity m_granularity; 83 }; 84 85 class WheelEventDispatchMediator : public EventDispatchMediator { 86 public: 87 WheelEventDispatchMediator(const PlatformWheelEvent&, PassRefPtr<AbstractView>); 88 89 private: 90 WheelEvent* event() const; 91 virtual bool dispatchEvent(EventDispatcher*) const; 92 }; 93 94 } // namespace WebCore 95 96 #endif // WheelEvent_h 97
