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| 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 "platform/PlatformEvent.h" | |
| 30 #include "platform/geometry/IntPoint.h" | |
| 31 | |
| 32 namespace WebCore { | |
| 33 | |
| 34 class FloatPoint; | |
| 35 class FloatSize; | |
| 36 | |
| 37 // Wheel events come in two flavors: | |
| 38 // The ScrollByPixelWheelEvent is a fine-grained event that specifies the pr
ecise number of pixels to scroll. It is sent directly by MacBook touchpads on O
S X, | |
| 39 // and synthesized in other cases where platforms generate line-by-line scro
lling events. | |
| 40 // The ScrollByPageWheelEvent indicates that the wheel event should scroll a
n entire page. In this case WebCore's built in paging behavior is used to page | |
| 41 // up and down (you get the same behavior as if the user was clicking in a s
crollbar track to page up or page down). | |
| 42 enum PlatformWheelEventGranularity { | |
| 43 ScrollByPageWheelEvent, | |
| 44 ScrollByPixelWheelEvent, | |
| 45 }; | |
| 46 | |
| 47 #if OS(MACOSX) | |
| 48 enum PlatformWheelEventPhase { | |
| 49 PlatformWheelEventPhaseNone = 0, | |
| 50 PlatformWheelEventPhaseBegan = 1 << 0, | |
| 51 PlatformWheelEventPhaseStationary = 1 << 1, | |
| 52 PlatformWheelEventPhaseChanged = 1 << 2, | |
| 53 PlatformWheelEventPhaseEnded = 1 << 3, | |
| 54 PlatformWheelEventPhaseCancelled = 1 << 4, | |
| 55 PlatformWheelEventPhaseMayBegin = 1 << 5, | |
| 56 }; | |
| 57 #endif | |
| 58 | |
| 59 class PlatformWheelEvent : public PlatformEvent { | |
| 60 public: | |
| 61 PlatformWheelEvent() | |
| 62 : PlatformEvent(PlatformEvent::Wheel) | |
| 63 , m_deltaX(0) | |
| 64 , m_deltaY(0) | |
| 65 , m_wheelTicksX(0) | |
| 66 , m_wheelTicksY(0) | |
| 67 , m_granularity(ScrollByPixelWheelEvent) | |
| 68 , m_directionInvertedFromDevice(false) | |
| 69 , m_hasPreciseScrollingDeltas(false) | |
| 70 #if OS(MACOSX) | |
| 71 , m_phase(PlatformWheelEventPhaseNone) | |
| 72 , m_momentumPhase(PlatformWheelEventPhaseNone) | |
| 73 , m_scrollCount(0) | |
| 74 , m_unacceleratedScrollingDeltaX(0) | |
| 75 , m_unacceleratedScrollingDeltaY(0) | |
| 76 #endif | |
| 77 { | |
| 78 } | |
| 79 | |
| 80 PlatformWheelEvent(IntPoint position, IntPoint globalPosition, float del
taX, float deltaY, float wheelTicksX, float wheelTicksY, PlatformWheelEventGranu
larity granularity, bool shiftKey, bool ctrlKey, bool altKey, bool metaKey) | |
| 81 : PlatformEvent(PlatformEvent::Wheel, shiftKey, ctrlKey, altKey, met
aKey, 0) | |
| 82 , m_position(position) | |
| 83 , m_globalPosition(globalPosition) | |
| 84 , m_deltaX(deltaX) | |
| 85 , m_deltaY(deltaY) | |
| 86 , m_wheelTicksX(wheelTicksX) | |
| 87 , m_wheelTicksY(wheelTicksY) | |
| 88 , m_granularity(granularity) | |
| 89 , m_directionInvertedFromDevice(false) | |
| 90 , m_hasPreciseScrollingDeltas(false) | |
| 91 #if OS(MACOSX) | |
| 92 , m_phase(PlatformWheelEventPhaseNone) | |
| 93 , m_momentumPhase(PlatformWheelEventPhaseNone) | |
| 94 , m_scrollCount(0) | |
| 95 , m_unacceleratedScrollingDeltaX(0) | |
| 96 , m_unacceleratedScrollingDeltaY(0) | |
| 97 #endif | |
| 98 { | |
| 99 } | |
| 100 | |
| 101 PlatformWheelEvent copyTurningVerticalTicksIntoHorizontalTicks() const | |
| 102 { | |
| 103 PlatformWheelEvent copy = *this; | |
| 104 | |
| 105 copy.m_deltaX = copy.m_deltaY; | |
| 106 copy.m_deltaY = 0; | |
| 107 copy.m_wheelTicksX = copy.m_wheelTicksY; | |
| 108 copy.m_wheelTicksY = 0; | |
| 109 | |
| 110 return copy; | |
| 111 } | |
| 112 | |
| 113 const IntPoint& position() const { return m_position; } // PlatformWindo
w coordinates. | |
| 114 const IntPoint& globalPosition() const { return m_globalPosition; } // S
creen coordinates. | |
| 115 | |
| 116 float deltaX() const { return m_deltaX; } | |
| 117 float deltaY() const { return m_deltaY; } | |
| 118 | |
| 119 float wheelTicksX() const { return m_wheelTicksX; } | |
| 120 float wheelTicksY() const { return m_wheelTicksY; } | |
| 121 | |
| 122 PlatformWheelEventGranularity granularity() const { return m_granularity
; } | |
| 123 | |
| 124 bool directionInvertedFromDevice() const { return m_directionInvertedFro
mDevice; } | |
| 125 | |
| 126 bool hasPreciseScrollingDeltas() const { return m_hasPreciseScrollingDel
tas; } | |
| 127 void setHasPreciseScrollingDeltas(bool b) { m_hasPreciseScrollingDeltas
= b; } | |
| 128 #if OS(MACOSX) | |
| 129 PlatformWheelEventPhase phase() const { return m_phase; } | |
| 130 PlatformWheelEventPhase momentumPhase() const { return m_momentumPhase;
} | |
| 131 unsigned scrollCount() const { return m_scrollCount; } | |
| 132 float unacceleratedScrollingDeltaX() const { return m_unacceleratedScrol
lingDeltaX; } | |
| 133 float unacceleratedScrollingDeltaY() const { return m_unacceleratedScrol
lingDeltaY; } | |
| 134 bool useLatchedEventNode() const { return m_momentumPhase == PlatformWhe
elEventPhaseBegan || m_momentumPhase == PlatformWheelEventPhaseChanged; } | |
| 135 #else | |
| 136 bool useLatchedEventNode() const { return false; } | |
| 137 #endif | |
| 138 | |
| 139 protected: | |
| 140 IntPoint m_position; | |
| 141 IntPoint m_globalPosition; | |
| 142 float m_deltaX; | |
| 143 float m_deltaY; | |
| 144 float m_wheelTicksX; | |
| 145 float m_wheelTicksY; | |
| 146 PlatformWheelEventGranularity m_granularity; | |
| 147 bool m_directionInvertedFromDevice; | |
| 148 bool m_hasPreciseScrollingDeltas; | |
| 149 #if OS(MACOSX) | |
| 150 PlatformWheelEventPhase m_phase; | |
| 151 PlatformWheelEventPhase m_momentumPhase; | |
| 152 unsigned m_scrollCount; | |
| 153 float m_unacceleratedScrollingDeltaX; | |
| 154 float m_unacceleratedScrollingDeltaY; | |
| 155 #endif | |
| 156 }; | |
| 157 | |
| 158 } // namespace WebCore | |
| 159 | |
| 160 #endif // PlatformWheelEvent_h | |
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Chromium Code Reviews
Issue 26510003:
Moving all the PlatformEvent subclasses from core/platform to platform (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink@master