include/wx/msw/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/region.h
   3 // Purpose:     wxRegion class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1997-2002 wxWidgets team
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_MSW_REGION_H_
  13 #define _WX_MSW_REGION_H_
  14
  15 class WXDLLEXPORT wxRegion : public wxRegionWithCombine
  16 {
  17 public:
  18     wxRegion();
  19     wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  20     wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight);
  21     wxRegion(const wxRect& rect);
  22     wxRegion(WXHRGN hRegion); // Hangs on to this region
  23     wxRegion(size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE );
  24     wxRegion( const wxBitmap& bmp)
  25     {
  26         Union(bmp);
  27     }
  28     wxRegion( const wxBitmap& bmp,
  29               const wxColour& transColour, int tolerance = 0)
  30     {
  31         Union(bmp, transColour, tolerance);
  32     }
  33
  34     virtual ~wxRegion();
  35
  36     // wxRegionBase methods
  37     virtual void Clear();
  38     virtual bool IsEmpty() const;
  39
  40     // Get internal region handle
  41     WXHRGN GetHRGN() const;
  42
  43 protected:
  44     virtual wxObjectRefData *CreateRefData() const;
  45     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  46
  47     virtual bool DoIsEqual(const wxRegion& region) const;
  48     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  49     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  50     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  51
  52     virtual bool DoOffset(wxCoord x, wxCoord y);
  53     virtual bool DoCombine(const wxRegion& region, wxRegionOp op);
  54
  55     friend class WXDLLEXPORT wxRegionIterator;
  56
  57     DECLARE_DYNAMIC_CLASS(wxRegion)
  58 };
  59
  60 class WXDLLEXPORT wxRegionIterator : public wxObject
  61 {
  62 public:
  63     wxRegionIterator() { Init(); }
  64     wxRegionIterator(const wxRegion& region);
  65     wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
  66
  67     wxRegionIterator& operator=(const wxRegionIterator& ri);
  68
  69     virtual ~wxRegionIterator();
  70
  71     void Reset() { m_current = 0; }
  72     void Reset(const wxRegion& region);
  73
  74     bool HaveRects() const { return (m_current < m_numRects); }
  75
  76     operator bool () const { return HaveRects(); }
  77
  78     wxRegionIterator& operator++();
  79     wxRegionIterator operator++(int);
  80
  81     wxCoord GetX() const;
  82     wxCoord GetY() const;
  83     wxCoord GetW() const;
  84     wxCoord GetWidth() const { return GetW(); }
  85     wxCoord GetH() const;
  86     wxCoord GetHeight() const { return GetH(); }
  87
  88     wxRect GetRect() const { return wxRect(GetX(), GetY(), GetW(), GetH()); }
  89
  90 private:
  91     // common part of all ctors
  92     void Init();
  93
  94     long     m_current;
  95     long     m_numRects;
  96     wxRegion m_region;
  97     wxRect*  m_rects;
  98
  99     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 100 };
 101
 102 #endif // _WX_MSW_REGION_H_