| /* |
| * 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 Apple Computer, Inc. |
| * |
| * 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 MouseRelatedEvent_h |
| #define MouseRelatedEvent_h |
| |
| #include "core/CoreExport.h" |
| #include "core/events/MouseEventInit.h" |
| #include "core/events/UIEventWithKeyState.h" |
| #include "platform/geometry/LayoutPoint.h" |
| |
| namespace blink { |
| |
| // Internal only: Helper class for what's common between mouse and wheel events. |
| class CORE_EXPORT MouseRelatedEvent : public UIEventWithKeyState { |
| public: |
| enum class PositionType { |
| Position, |
| // Positionless mouse events are used, for example, for 'click' events from |
| // keyboard input. It's kind of surprising for a mouse event not to have a |
| // position. |
| Positionless |
| }; |
| // Note that these values are adjusted to counter the effects of zoom, so that |
| // values exposed via DOM APIs are invariant under zooming. |
| int screenX() const { return m_screenLocation.x(); } |
| int screenY() const { return m_screenLocation.y(); } |
| const IntPoint& screenLocation() const { return m_screenLocation; } |
| int clientX() const { return m_clientLocation.x().toInt(); } |
| int clientY() const { return m_clientLocation.y().toInt(); } |
| int movementX() const { return m_movementDelta.x().toInt(); } |
| int movementY() const { return m_movementDelta.y().toInt(); } |
| const LayoutPoint& clientLocation() const { return m_clientLocation; } |
| int layerX(); |
| int layerY(); |
| int offsetX(); |
| int offsetY(); |
| int pageX() const; |
| int pageY() const; |
| int x() const; |
| int y() const; |
| bool hasPosition() const { return m_positionType == PositionType::Position; } |
| |
| // Page point in "absolute" coordinates (i.e. post-zoomed, page-relative |
| // coords, usable with LayoutObject::absoluteToLocal) relative to view(), i.e. |
| // the local frame. |
| const LayoutPoint& absoluteLocation() const { return m_absoluteLocation; } |
| void setAbsoluteLocation(const LayoutPoint& p) { m_absoluteLocation = p; } |
| |
| DECLARE_VIRTUAL_TRACE(); |
| |
| protected: |
| MouseRelatedEvent(); |
| // TODO(lanwei): Will make this argument non-optional and all the callers need |
| // to provide sourceCapabilities even when it is null, see |
| // https://crbug.com/476530. |
| MouseRelatedEvent(const AtomicString& type, |
| bool canBubble, |
| bool cancelable, |
| AbstractView*, |
| int detail, |
| const IntPoint& screenLocation, |
| const IntPoint& rootFrameLocation, |
| const IntPoint& movementDelta, |
| PlatformEvent::Modifiers, |
| double platformTimeStamp, |
| PositionType, |
| InputDeviceCapabilities* sourceCapabilities = nullptr); |
| |
| MouseRelatedEvent(const AtomicString& type, |
| const MouseEventInit& initializer); |
| |
| void initCoordinates(const LayoutPoint& clientLocation); |
| void receivedTarget() final; |
| |
| void computePageLocation(); |
| void computeRelativePosition(); |
| |
| // Expose these so MouseEvent::initMouseEvent can set them. |
| IntPoint m_screenLocation; |
| LayoutPoint m_clientLocation; |
| LayoutPoint m_movementDelta; |
| |
| private: |
| LayoutPoint m_pageLocation; |
| LayoutPoint m_layerLocation; |
| LayoutPoint m_offsetLocation; |
| LayoutPoint m_absoluteLocation; |
| PositionType m_positionType; |
| bool m_hasCachedRelativePosition; |
| }; |
| |
| } // namespace blink |
| |
| #endif // MouseRelatedEvent_h |