WebCore/RenderSlider.h

   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 int baselinePosition( bool, bool ) const;
  43         virtual void calcPrefWidths();
  44         virtual void layout();
  45         virtual void updateFromElement();
  46
  47         virtual bool mouseEventIsInThumb(MouseEvent*);
  48
  49         void setValueForPosition(int position);
  50         double setPositionFromValue(bool inLayout = false);
  51         int positionForOffset(const IntPoint&);
  52
  53         void valueChanged();
  54
  55         int currentPosition();
  56         void setCurrentPosition(int pos);
  57
  58         void forwardEvent(Event*);
  59         bool inDragMode() const;
  60
  61     protected:
  62         virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
  63
  64     private:
  65         PassRefPtr<RenderStyle> createThumbStyle(const RenderStyle* parentStyle, const RenderStyle* oldStyle = 0);
  66         int trackSize();
  67
  68         RefPtr<HTMLSliderThumbElement> m_thumb;
  69 };
  70
  71 } // namespace WebCore
  72
  73 #endif // RenderSlider_h