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/*
* Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef RenderScrollbar_h
#define RenderScrollbar_h
#include "RenderStyleConstants.h"
#include "Scrollbar.h"
#include <wtf/HashMap.h>
namespace WebCore {
class RenderBox;
class RenderScrollbarPart;
class RenderStyle;
class RenderScrollbar : public Scrollbar {
protected:
RenderScrollbar(ScrollbarClient*, ScrollbarOrientation, RenderBox*);
public:
friend class Scrollbar;
static PassRefPtr<Scrollbar> createCustomScrollbar(ScrollbarClient*, ScrollbarOrientation, RenderBox*);
virtual ~RenderScrollbar();
static ScrollbarPart partForStyleResolve();
static RenderScrollbar* scrollbarForStyleResolve();
RenderBox* owningRenderer() const { return m_owner; }
void paintPart(GraphicsContext*, ScrollbarPart, const IntRect&);
IntRect buttonRect(ScrollbarPart);
IntRect trackRect(int startLength, int endLength);
IntRect trackPieceRectWithMargins(ScrollbarPart, const IntRect&);
int minimumThumbLength();
private:
virtual void setParent(ScrollView*);
virtual void setEnabled(bool);
virtual void paint(GraphicsContext*, const IntRect& damageRect);
virtual void setHoveredPart(ScrollbarPart);
virtual void setPressedPart(ScrollbarPart);
virtual void styleChanged();
virtual bool isCustomScrollbar() const { return true; }
void updateScrollbarParts(bool destroy = false);
PassRefPtr<RenderStyle> getScrollbarPseudoStyle(ScrollbarPart, PseudoId);
void updateScrollbarPart(ScrollbarPart, bool destroy = false);
RenderBox* m_owner;
HashMap<unsigned, RenderScrollbarPart*> m_parts;
};
inline RenderScrollbar* toRenderScrollbar(Scrollbar* scrollbar)
{
ASSERT(!scrollbar || scrollbar->isCustomScrollbar());
return static_cast<RenderScrollbar*>(scrollbar);
}
// This will catch anyone doing an unnecessary cast.
void toRenderScrollbar(const RenderScrollbar*);
} // namespace WebCore
#endif // RenderScrollbar_h
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