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/*
* Copyright (C) 2011, 2012 Research In Motion Limited. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef InRegionScroller_p_h
#define InRegionScroller_p_h
#include "IntSize.h"
#include "IntPoint.h"
#include <interaction/ScrollViewBase.h>
#include <vector>
namespace WebCore {
class Frame;
class Node;
class RenderBox;
class RenderObject;
class RenderLayer;
}
namespace BlackBerry {
namespace WebKit {
class InRegionScrollableArea;
class WebPagePrivate;
class InRegionScrollerPrivate {
public:
InRegionScrollerPrivate(WebPagePrivate*);
void reset();
bool isActive() const;
bool setScrollPositionCompositingThread(unsigned camouflagedLayer, const WebCore::IntPoint& scrollPosition);
bool setScrollPositionWebKitThread(unsigned camouflagedLayer, const WebCore::IntPoint& scrollPosition, bool supportsAcceleratedScrolling);
void calculateInRegionScrollableAreasForPoint(const WebCore::IntPoint&);
const std::vector<Platform::ScrollViewBase*>& activeInRegionScrollableAreas() const;
void clearDocumentData(const WebCore::Document*);
static bool canScrollRenderBox(WebCore::RenderBox*);
WebPagePrivate* m_webPage;
bool m_needsActiveScrollableAreaCalculation;
private:
bool setLayerScrollPosition(WebCore::RenderLayer*, const WebCore::IntPoint& scrollPosition);
void calculateActiveAndShrinkCachedScrollableAreas(WebCore::RenderLayer*);
void pushBackInRegionScrollable(InRegionScrollableArea*);
void adjustScrollDelta(const WebCore::IntPoint& maxOffset, const WebCore::IntPoint& currentOffset, WebCore::IntSize& delta) const;
std::vector<Platform::ScrollViewBase*> m_activeInRegionScrollableAreas;
};
}
}
#endif
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