1 /* 2 * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef PlatformWheelEvent_h 27 #define PlatformWheelEvent_h 28 29 #include "IntPoint.h" 30 31 #if PLATFORM(GTK) 32 typedef struct _GdkEventScroll GdkEventScroll; 33 #endif 34 35 #if PLATFORM(QT) 36 QT_BEGIN_NAMESPACE 37 class QWheelEvent; 38 class QGraphicsSceneWheelEvent; 39 QT_END_NAMESPACE 40 #endif 41 42 #if PLATFORM(WIN) 43 typedef struct HWND__* HWND; 44 typedef unsigned WPARAM; 45 typedef long LPARAM; 46 #endif 47 48 #if PLATFORM(WX) 49 class wxMouseEvent; 50 class wxPoint; 51 #endif 52 53 #if PLATFORM(HAIKU) 54 class BMessage; 55 #endif 56 57 namespace WebCore { 58 59 class FloatPoint; 60 class FloatSize; 61 62 // Wheel events come in two flavors: 63 // The ScrollByPixelWheelEvent is a fine-grained event that specifies the precise number of pixels to scroll. It is sent directly by MacBook touchpads on OS X, 64 // and synthesized in other cases where platforms generate line-by-line scrolling events. 65 // The ScrollByPageWheelEvent indicates that the wheel event should scroll an entire page. In this case WebCore's built in paging behavior is used to page 66 // up and down (you get the same behavior as if the user was clicking in a scrollbar track to page up or page down). Page scrolling only works in the vertical direction. 67 enum PlatformWheelEventGranularity { ScrollByPageWheelEvent, ScrollByPixelWheelEvent }; 68 69 class PlatformWheelEvent { 70 public: 71 PlatformWheelEvent() 72 : m_deltaX(0) 73 , m_deltaY(0) 74 , m_wheelTicksX(0) 75 , m_wheelTicksY(0) 76 , m_granularity(ScrollByPixelWheelEvent) 77 , m_isAccepted(false) 78 , m_shiftKey(false) 79 , m_ctrlKey(false) 80 , m_altKey(false) 81 , m_metaKey(false) 82 { 83 } 84 85 const IntPoint& pos() const { return m_position; } // PlatformWindow coordinates. 86 const IntPoint& globalPos() const { return m_globalPosition; } // Screen coordinates. 87 88 float deltaX() const { return m_deltaX; } 89 float deltaY() const { return m_deltaY; } 90 91 float wheelTicksX() const { return m_wheelTicksX; } 92 float wheelTicksY() const { return m_wheelTicksY; } 93 94 PlatformWheelEventGranularity granularity() const { return m_granularity; } 95 96 bool isAccepted() const { return m_isAccepted; } 97 bool shiftKey() const { return m_shiftKey; } 98 bool ctrlKey() const { return m_ctrlKey; } 99 bool altKey() const { return m_altKey; } 100 bool metaKey() const { return m_metaKey; } 101 102 int x() const { return m_position.x(); } // PlatformWindow coordinates. 103 int y() const { return m_position.y(); } 104 int globalX() const { return m_globalPosition.x(); } // Screen coordinates. 105 int globalY() const { return m_globalPosition.y(); } 106 107 void accept() { m_isAccepted = true; } 108 void ignore() { m_isAccepted = false; } 109 110 void turnVerticalTicksIntoHorizontal() 111 { 112 m_deltaX = m_deltaY; 113 m_deltaY = 0; 114 115 m_wheelTicksX = m_wheelTicksY; 116 m_wheelTicksY = 0; 117 } 118 119 #if PLATFORM(GTK) 120 PlatformWheelEvent(GdkEventScroll*); 121 #endif 122 123 #if PLATFORM(MAC) && defined(__OBJC__) 124 PlatformWheelEvent(NSEvent *, NSView *windowView); 125 #endif 126 127 #if PLATFORM(QT) 128 PlatformWheelEvent(QWheelEvent*); 129 PlatformWheelEvent(QGraphicsSceneWheelEvent*); 130 void applyDelta(int delta, Qt::Orientation); 131 #endif 132 133 #if PLATFORM(WIN) 134 PlatformWheelEvent(HWND, WPARAM, LPARAM, bool isMouseHWheel); 135 PlatformWheelEvent(HWND, const FloatSize& delta, const FloatPoint& location); 136 #endif 137 138 #if PLATFORM(WX) 139 PlatformWheelEvent(const wxMouseEvent&, const wxPoint&); 140 #endif 141 142 #if PLATFORM(HAIKU) 143 PlatformWheelEvent(BMessage*); 144 #endif 145 146 protected: 147 IntPoint m_position; 148 IntPoint m_globalPosition; 149 float m_deltaX; 150 float m_deltaY; 151 float m_wheelTicksX; 152 float m_wheelTicksY; 153 PlatformWheelEventGranularity m_granularity; 154 bool m_isAccepted; 155 bool m_shiftKey; 156 bool m_ctrlKey; 157 bool m_altKey; 158 bool m_metaKey; 159 }; 160 161 } // namespace WebCore 162 163 #endif // PlatformWheelEvent_h 164
