1 /**

     2  *

     3  * Copyright (C) 2006 Apple Computer, Inc.

     4  *

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

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

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

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

     9  *

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

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

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

    13  * Library General Public License for more details.

    14  *

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

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

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

    18  * Boston, MA 02110-1301, USA.

    19  *

    20  */

    21 

    22 #ifndef RenderSlider_h

    23 #define RenderSlider_h

    24 

    25 #include "RenderBlock.h"

    26 

    27 namespace WebCore {

    28 

    29     class HTMLDivElement;

    30     class HTMLInputElement;

    31     class HTMLSliderThumbElement;

    32     class MouseEvent;

    33     

    34     class RenderSlider : public RenderBlock {

    35     public:

    36         RenderSlider(HTMLInputElement*);

    37         ~RenderSlider();

    38 

    39         virtual const char* renderName() const { return "RenderSlider"; }

    40         virtual bool isSlider() const { return true; }

    41 

    42         virtual short baselinePosition( bool, bool ) const;

    43         virtual void calcPrefWidths();

    44         virtual void setStyle(RenderStyle*);

    45         virtual void layout();

    46         virtual void updateFromElement();

    47         

    48         bool mouseEventIsInThumb(MouseEvent*);

    49 

    50         void setValueForPosition(int position);

    51         double setPositionFromValue(bool inLayout = false);

    52         int positionForOffset(const IntPoint&);

    53 

    54         void valueChanged();

    55         

    56         int currentPosition();

    57         void setCurrentPosition(int pos);        

    58         

    59         void forwardEvent(Event*);

    60         bool inDragMode() const;

    61 

    62     private:

    63         RenderStyle* createThumbStyle(RenderStyle* parentStyle);

    64         int trackSize();

    65 

    66         RefPtr<HTMLSliderThumbElement> m_thumb;

    67 };

    68 

    69 } // namespace WebCore

    70 

    71 #endif // RenderSlider_h