QuadTreeModelBase.h++

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#ifndef __libquark_gui_QuadTreeModelBase_hxx
#define __libquark_gui_QuadTreeModelBase_hxx

#include <QObject>
#include <QPoint>
#include <QRect>

namespace quark {
namespace gui {

class QuadTreeModelBase : public QObject
{
  Q_OBJECT;

  public:

  virtual ~QuadTreeModelBase();

  QRect region() const
  { return(_region); }

  uint itemCount() const
  { return(_itemCount); }

  bool isEmpty() const
  { return(_itemCount == 0); }

  bool setVisibleRegion(const QRect &visibleRegion);

  QRect visibleRegion() const
  { return(_visibleRegion); }

  signals:

  void dataChanged();

  void itemAdded(const QPoint &location);

  void itemModified(const QPoint &location);

  void itemRemoved(const QPoint &location);

  protected:

  QuadTreeModelBase(const QRect &region, uint maxItemsPerQuad = 1);

  uint _maxItemsPerQuad;
  QRect _region;
  QRect _visibleRegion;
  uint _itemCount;
};

} // namespace gui
} // namespace quark

#endif // __libquark_gui_QuadTreeModelBase_hxx