1 /*

     2  * Copyright (C) 2001 Peter Kelly (pmk@post.com)

     3  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)

     4  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)

     5  * Copyright (C) 2003, 2004, 2005, 2006 Apple Computer, Inc.

     6  *

     7  * This library is free software; you can redistribute it and/or

     8  * modify it under the terms of the GNU Library General Public

     9  * License as published by the Free Software Foundation; either

    10  * version 2 of the License, or (at your option) any later version.

    11  *

    12  * This library is distributed in the hope that it will be useful,

    13  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    15  * Library General Public License for more details.

    16  *

    17  * You should have received a copy of the GNU Library General Public License

    18  * along with this library; see the file COPYING.LIB.  If not, write to

    19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    20  * Boston, MA 02110-1301, USA.

    21  *

    22  */

    23 

    24 #ifndef MouseRelatedEvent_h

    25 #define MouseRelatedEvent_h

    26 

    27 #include "IntPoint.h"

    28 #include "UIEventWithKeyState.h"

    29 

    30 namespace WebCore {

    31 

    32     // Internal only: Helper class for what's common between mouse and wheel events.

    33     class MouseRelatedEvent : public UIEventWithKeyState {

    34     public:

    35         // Note that these values are adjusted to counter the effects of zoom, so that values

    36         // exposed via DOM APIs are invariant under zooming.

    37         int screenX() const { return m_screenX; }

    38         int screenY() const { return m_screenY; }

    39         int clientX() const { return m_clientX; }

    40         int clientY() const { return m_clientY; }

    41         int layerX() const { return m_layerX; }

    42         int layerY() const { return m_layerY; }

    43         int offsetX() const { return m_offsetX; }

    44         int offsetY() const { return m_offsetY; }

    45         bool isSimulated() const { return m_isSimulated; }

    46         virtual int pageX() const;

    47         virtual int pageY() const;

    48         int x() const;

    49         int y() const;

    50 

    51         // Page point in "absolute" coordinates (i.e. post-zoomed, page-relative coords,

    52         // usable with RenderObject::absoluteToLocal).

    53         IntPoint absoluteLocation() const { return m_absoluteLocation; }

    54         void setAbsoluteLocation(const IntPoint& p) { m_absoluteLocation = p; }

    55     

    56     protected:

    57         MouseRelatedEvent();

    58         MouseRelatedEvent(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtr<AbstractView>,

    59                           int detail, int screenX, int screenY, int pageX, int pageY,

    60                           bool ctrlKey, bool altKey, bool shiftKey, bool metaKey, bool isSimulated = false);

    61 

    62         void initCoordinates();

    63         void initCoordinates(int clientX, int clientY);

    64         virtual void receivedTarget();

    65 

    66         void computePageLocation();

    67         

    68         // Expose these so MouseEvent::initMouseEvent can set them.

    69         int m_screenX;

    70         int m_screenY;

    71         int m_clientX;

    72         int m_clientY;

    73 

    74     private:

    75         int m_pageX;

    76         int m_pageY;

    77         int m_layerX;

    78         int m_layerY;

    79         int m_offsetX;

    80         int m_offsetY;

    81         IntPoint m_absoluteLocation;

    82         bool m_isSimulated;

    83     };

    84 

    85 } // namespace WebCore

    86 

    87 #endif // MouseRelatedEvent_h