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