include/wx/dfb/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/dfb/region.h
   3 // Purpose:     wxRegion class
   4 // Author:      Vaclav Slavik
   5 // Created:     2006-08-08
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2006 REA Elektronik GmbH
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_DFB_REGION_H_
  12 #define _WX_DFB_REGION_H_
  13
  14 class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
  15 {
  16 public:
  17     wxRegion();
  18     wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  19     wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight);
  20     wxRegion(const wxRect& rect);
  21     wxRegion(const wxBitmap& bmp)
  22     {
  23         Union(bmp);
  24     }
  25     wxRegion(const wxBitmap& bmp,
  26              const wxColour& transColour, int tolerance = 0)
  27     {
  28         Union(bmp, transColour, tolerance);
  29     }
  30
  31     virtual ~wxRegion();
  32
  33     // wxRegionBase methods
  34     virtual void Clear();
  35     virtual bool IsEmpty() const;
  36
  37     // NB: implementation detail of DirectFB, should be removed if full
  38     //     (i.e. not rect-only version is implemented) so that all code that
  39     //     assumes region==rect breaks
  40     wxRect AsRect() const { return GetBox(); }
  41
  42 protected:
  43     // ref counting code
  44     virtual wxObjectRefData *CreateRefData() const;
  45     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  46
  47     // wxRegionBase pure virtuals
  48     virtual bool DoIsEqual(const wxRegion& region) const;
  49     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  50     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  51     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  52
  53     virtual bool DoOffset(wxCoord x, wxCoord y);
  54     virtual bool DoUnionWithRect(const wxRect& rect);
  55     virtual bool DoUnionWithRegion(const wxRegion& region);
  56     virtual bool DoIntersect(const wxRegion& region);
  57     virtual bool DoSubtract(const wxRegion& region);
  58     virtual bool DoXor(const wxRegion& region);
  59
  60
  61     friend class WXDLLIMPEXP_FWD_CORE wxRegionIterator;
  62
  63     DECLARE_DYNAMIC_CLASS(wxRegion);
  64 };
  65
  66
  67 class WXDLLIMPEXP_CORE wxRegionIterator : public wxObject
  68 {
  69 public:
  70     wxRegionIterator() {}
  71     wxRegionIterator(const wxRegion& region) { Reset(region); }
  72
  73     void Reset() { m_rect = wxRect(); }
  74     void Reset(const wxRegion& region);
  75
  76     bool HaveRects() const { return !m_rect.IsEmpty(); }
  77     operator bool() const { return HaveRects(); }
  78
  79     wxRegionIterator& operator++();
  80     wxRegionIterator operator++(int);
  81
  82     wxCoord GetX() const { return m_rect.GetX(); }
  83     wxCoord GetY() const { return m_rect.GetY(); }
  84     wxCoord GetW() const { return m_rect.GetWidth(); }
  85     wxCoord GetWidth() const { return GetW(); }
  86     wxCoord GetH() const { return m_rect.GetHeight(); }
  87     wxCoord GetHeight() const { return GetH(); }
  88     wxRect GetRect() const { return m_rect; }
  89
  90 private:
  91     wxRect m_rect;
  92
  93     DECLARE_DYNAMIC_CLASS(wxRegionIterator);
  94 };
  95
  96 #endif // _WX_DFB_REGION_H_