| /* |
| * Copyright (C) 2001 Peter Kelly (pmk@post.com) |
| * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de) |
| * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2008, 2010 Apple Inc. All rights reserved. |
| * Copyright (C) 2013 Samsung Electronics. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef WheelEvent_h |
| #define WheelEvent_h |
| |
| #include "core/CoreExport.h" |
| #include "core/events/MouseEvent.h" |
| #include "core/events/WheelEventInit.h" |
| #include "platform/geometry/FloatPoint.h" |
| |
| namespace blink { |
| |
| class PlatformWheelEvent; |
| |
| class CORE_EXPORT WheelEvent final : public MouseEvent { |
| DEFINE_WRAPPERTYPEINFO(); |
| public: |
| enum { TickMultiplier = 120 }; |
| |
| enum DeltaMode { |
| DOM_DELTA_PIXEL = 0, |
| DOM_DELTA_LINE, |
| DOM_DELTA_PAGE |
| }; |
| |
| static WheelEvent* create() |
| { |
| return new WheelEvent; |
| } |
| |
| static WheelEvent* create(const PlatformWheelEvent& platformEvent, AbstractView*); |
| |
| static WheelEvent* create(const AtomicString& type, const WheelEventInit& initializer) |
| { |
| return new WheelEvent(type, initializer); |
| } |
| |
| static WheelEvent* create(const FloatPoint& wheelTicks, |
| const FloatPoint& rawDelta, unsigned deltaMode, AbstractView* view, |
| const IntPoint& screenLocation, const IntPoint& windowLocation, |
| PlatformEvent::Modifiers modifiers, unsigned short buttons, double platformTimeStamp, |
| bool canScroll, int resendingPluginId, bool hasPreciseScrollingDeltas, RailsMode railsMode, bool cancelable) |
| { |
| return new WheelEvent(wheelTicks, rawDelta, deltaMode, view, |
| screenLocation, windowLocation, modifiers, buttons, platformTimeStamp, |
| canScroll, resendingPluginId, hasPreciseScrollingDeltas, railsMode, cancelable); |
| } |
| |
| double deltaX() const { return m_deltaX; } // Positive when scrolling right. |
| double deltaY() const { return m_deltaY; } // Positive when scrolling down. |
| double deltaZ() const { return m_deltaZ; } |
| int wheelDelta() const { return wheelDeltaY() ? wheelDeltaY() : wheelDeltaX(); } // Deprecated. |
| int wheelDeltaX() const { return m_wheelDelta.x(); } // Deprecated, negative when scrolling right. |
| int wheelDeltaY() const { return m_wheelDelta.y(); } // Deprecated, negative when scrolling down. |
| unsigned deltaMode() const { return m_deltaMode; } |
| float ticksX() const { return static_cast<float>(m_wheelDelta.x()) / TickMultiplier; } |
| float ticksY() const { return static_cast<float>(m_wheelDelta.y()) / TickMultiplier; } |
| bool canScroll() const { return m_canScroll; } |
| int resendingPluginId() const { return m_resendingPluginId; } |
| bool hasPreciseScrollingDeltas() const { return m_hasPreciseScrollingDeltas; } |
| RailsMode getRailsMode() const { return m_railsMode; } |
| |
| const AtomicString& interfaceName() const override; |
| bool isMouseEvent() const override; |
| bool isWheelEvent() const override; |
| |
| EventDispatchMediator* createMediator() override; |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| private: |
| WheelEvent(); |
| WheelEvent(const AtomicString&, const WheelEventInit&); |
| WheelEvent(const FloatPoint& wheelTicks, const FloatPoint& rawDelta, |
| unsigned, AbstractView*, const IntPoint& screenLocation, const IntPoint& windowLocation, |
| PlatformEvent::Modifiers, unsigned short buttons, double platformTimeStamp, |
| bool canScroll, int resendingPluginId, bool hasPreciseScrollingDeltas, RailsMode, bool cancelable); |
| |
| IntPoint m_wheelDelta; |
| double m_deltaX; |
| double m_deltaY; |
| double m_deltaZ; |
| unsigned m_deltaMode; |
| bool m_canScroll; |
| int m_resendingPluginId; |
| bool m_hasPreciseScrollingDeltas; |
| RailsMode m_railsMode; |
| }; |
| |
| DEFINE_EVENT_TYPE_CASTS(WheelEvent); |
| |
| } // namespace blink |
| |
| #endif // WheelEvent_h |