Index: Source/platform/PlatformWheelEvent.h |
diff --git a/Source/platform/PlatformWheelEvent.h b/Source/platform/PlatformWheelEvent.h |
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+/* |
+ * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved. |
+ * |
+ * Redistribution and use in source and binary forms, with or without |
+ * modification, are permitted provided that the following conditions |
+ * are met: |
+ * 1. Redistributions of source code must retain the above copyright |
+ * notice, this list of conditions and the following disclaimer. |
+ * 2. Redistributions in binary form must reproduce the above copyright |
+ * notice, this list of conditions and the following disclaimer in the |
+ * documentation and/or other materials provided with the distribution. |
+ * |
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
+ */ |
+ |
+#ifndef PlatformWheelEvent_h |
+#define PlatformWheelEvent_h |
+ |
+#include "platform/PlatformEvent.h" |
+#include "platform/geometry/IntPoint.h" |
+ |
+namespace WebCore { |
+ |
+class FloatPoint; |
+class FloatSize; |
+ |
+// Wheel events come in two flavors: |
+// 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, |
+// and synthesized in other cases where platforms generate line-by-line scrolling events. |
+// 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 |
+// up and down (you get the same behavior as if the user was clicking in a scrollbar track to page up or page down). |
+enum PlatformWheelEventGranularity { |
+ ScrollByPageWheelEvent, |
+ ScrollByPixelWheelEvent, |
+}; |
+ |
+#if OS(MACOSX) |
+enum PlatformWheelEventPhase { |
+ PlatformWheelEventPhaseNone = 0, |
+ PlatformWheelEventPhaseBegan = 1 << 0, |
+ PlatformWheelEventPhaseStationary = 1 << 1, |
+ PlatformWheelEventPhaseChanged = 1 << 2, |
+ PlatformWheelEventPhaseEnded = 1 << 3, |
+ PlatformWheelEventPhaseCancelled = 1 << 4, |
+ PlatformWheelEventPhaseMayBegin = 1 << 5, |
+}; |
+#endif |
+ |
+class PlatformWheelEvent : public PlatformEvent { |
+public: |
+ PlatformWheelEvent() |
+ : PlatformEvent(PlatformEvent::Wheel) |
+ , m_deltaX(0) |
+ , m_deltaY(0) |
+ , m_wheelTicksX(0) |
+ , m_wheelTicksY(0) |
+ , m_granularity(ScrollByPixelWheelEvent) |
+ , m_directionInvertedFromDevice(false) |
+ , m_hasPreciseScrollingDeltas(false) |
+#if OS(MACOSX) |
+ , m_phase(PlatformWheelEventPhaseNone) |
+ , m_momentumPhase(PlatformWheelEventPhaseNone) |
+ , m_scrollCount(0) |
+ , m_unacceleratedScrollingDeltaX(0) |
+ , m_unacceleratedScrollingDeltaY(0) |
+#endif |
+ { |
+ } |
+ |
+ PlatformWheelEvent(IntPoint position, IntPoint globalPosition, float deltaX, float deltaY, float wheelTicksX, float wheelTicksY, PlatformWheelEventGranularity granularity, bool shiftKey, bool ctrlKey, bool altKey, bool metaKey) |
+ : PlatformEvent(PlatformEvent::Wheel, shiftKey, ctrlKey, altKey, metaKey, 0) |
+ , m_position(position) |
+ , m_globalPosition(globalPosition) |
+ , m_deltaX(deltaX) |
+ , m_deltaY(deltaY) |
+ , m_wheelTicksX(wheelTicksX) |
+ , m_wheelTicksY(wheelTicksY) |
+ , m_granularity(granularity) |
+ , m_directionInvertedFromDevice(false) |
+ , m_hasPreciseScrollingDeltas(false) |
+#if OS(MACOSX) |
+ , m_phase(PlatformWheelEventPhaseNone) |
+ , m_momentumPhase(PlatformWheelEventPhaseNone) |
+ , m_scrollCount(0) |
+ , m_unacceleratedScrollingDeltaX(0) |
+ , m_unacceleratedScrollingDeltaY(0) |
+#endif |
+ { |
+ } |
+ |
+ PlatformWheelEvent copyTurningVerticalTicksIntoHorizontalTicks() const |
+ { |
+ PlatformWheelEvent copy = *this; |
+ |
+ copy.m_deltaX = copy.m_deltaY; |
+ copy.m_deltaY = 0; |
+ copy.m_wheelTicksX = copy.m_wheelTicksY; |
+ copy.m_wheelTicksY = 0; |
+ |
+ return copy; |
+ } |
+ |
+ const IntPoint& position() const { return m_position; } // PlatformWindow coordinates. |
+ const IntPoint& globalPosition() const { return m_globalPosition; } // Screen coordinates. |
+ |
+ float deltaX() const { return m_deltaX; } |
+ float deltaY() const { return m_deltaY; } |
+ |
+ float wheelTicksX() const { return m_wheelTicksX; } |
+ float wheelTicksY() const { return m_wheelTicksY; } |
+ |
+ PlatformWheelEventGranularity granularity() const { return m_granularity; } |
+ |
+ bool directionInvertedFromDevice() const { return m_directionInvertedFromDevice; } |
+ |
+ bool hasPreciseScrollingDeltas() const { return m_hasPreciseScrollingDeltas; } |
+ void setHasPreciseScrollingDeltas(bool b) { m_hasPreciseScrollingDeltas = b; } |
+#if OS(MACOSX) |
+ PlatformWheelEventPhase phase() const { return m_phase; } |
+ PlatformWheelEventPhase momentumPhase() const { return m_momentumPhase; } |
+ unsigned scrollCount() const { return m_scrollCount; } |
+ float unacceleratedScrollingDeltaX() const { return m_unacceleratedScrollingDeltaX; } |
+ float unacceleratedScrollingDeltaY() const { return m_unacceleratedScrollingDeltaY; } |
+ bool useLatchedEventNode() const { return m_momentumPhase == PlatformWheelEventPhaseBegan || m_momentumPhase == PlatformWheelEventPhaseChanged; } |
+#else |
+ bool useLatchedEventNode() const { return false; } |
+#endif |
+ |
+protected: |
+ IntPoint m_position; |
+ IntPoint m_globalPosition; |
+ float m_deltaX; |
+ float m_deltaY; |
+ float m_wheelTicksX; |
+ float m_wheelTicksY; |
+ PlatformWheelEventGranularity m_granularity; |
+ bool m_directionInvertedFromDevice; |
+ bool m_hasPreciseScrollingDeltas; |
+#if OS(MACOSX) |
+ PlatformWheelEventPhase m_phase; |
+ PlatformWheelEventPhase m_momentumPhase; |
+ unsigned m_scrollCount; |
+ float m_unacceleratedScrollingDeltaX; |
+ float m_unacceleratedScrollingDeltaY; |
+#endif |
+}; |
+ |
+} // namespace WebCore |
+ |
+#endif // PlatformWheelEvent_h |