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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 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 COMPUTER, 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 COMPUTER, 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 PlatformScrollbar_h
#define PlatformScrollbar_h
#include "ScrollBar.h"
#include "Timer.h"
#include "Widget.h"
#include <wtf/PassRefPtr.h>
typedef struct HDC__* HDC;
namespace WebCore {
enum ScrollbarPart { NoPart, BackButtonPart, BackTrackPart, ThumbPart, ForwardTrackPart, ForwardButtonPart };
class PlatformScrollbar : public Widget, public Scrollbar {
public:
static PassRefPtr<PlatformScrollbar> create(ScrollbarClient* client, ScrollbarOrientation orientation, ScrollbarControlSize size)
{
return adoptRef(new PlatformScrollbar(client, orientation, size));
}
virtual ~PlatformScrollbar();
virtual bool isWidget() const { return true; }
virtual void setParent(ScrollView*);
virtual int width() const;
virtual int height() const;
virtual void setRect(const IntRect&);
virtual void setEnabled(bool);
virtual void paint(GraphicsContext*, const IntRect& damageRect);
virtual bool handleMouseMoveEvent(const PlatformMouseEvent&);
virtual bool handleMouseOutEvent(const PlatformMouseEvent&);
virtual bool handleMousePressEvent(const PlatformMouseEvent&);
virtual bool handleMouseReleaseEvent(const PlatformMouseEvent&);
virtual IntRect windowClipRect() const;
static void themeChanged();
static int horizontalScrollbarHeight(ScrollbarControlSize size = RegularScrollbar);
static int verticalScrollbarWidth(ScrollbarControlSize size = RegularScrollbar);
void autoscrollTimerFired(Timer<PlatformScrollbar>*);
protected:
virtual void updateThumbPosition();
virtual void updateThumbProportion();
private:
PlatformScrollbar(ScrollbarClient*, ScrollbarOrientation, ScrollbarControlSize);
bool hasButtons() const;
bool hasThumb() const;
IntRect backButtonRect() const;
IntRect forwardButtonRect() const;
IntRect trackRect() const;
IntRect thumbRect() const;
IntRect gripperRect(const IntRect& thumbRect) const;
void splitTrack(const IntRect& trackRect, IntRect& beforeThumbRect, IntRect& thumbRect, IntRect& afterThumbRect) const;
int thumbPosition() const;
int thumbLength() const;
int trackLength() const;
void paintButton(GraphicsContext*, const IntRect& buttonRect, bool start, const IntRect& damageRect) const;
void paintTrack(GraphicsContext*, const IntRect& trackRect, bool start, const IntRect& damageRect) const;
void paintThumb(GraphicsContext*, const IntRect& thumbRect, const IntRect& damageRect) const;
void paintGripper(HDC, const IntRect& gripperRect) const;
ScrollbarPart hitTest(const PlatformMouseEvent&);
void startTimerIfNeeded(double delay);
void stopTimerIfNeeded();
void autoscrollPressedPart(double delay);
ScrollDirection pressedPartScrollDirection();
ScrollGranularity pressedPartScrollGranularity();
bool thumbUnderMouse();
void invalidatePart(ScrollbarPart);
void invalidateTrack();
ScrollbarPart m_hoveredPart;
ScrollbarPart m_pressedPart;
int m_pressedPos;
Timer<PlatformScrollbar> m_scrollTimer;
bool m_overlapsResizer;
};
}
#endif // PlatformScrollbar_h
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