include/wx/os2/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/os2/region.h
   3 // Purpose:     wxRegion class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/15/99
   7 // Copyright:   (c) David Webster
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_OS2_REGION_H_
  12 #define _WX_OS2_REGION_H_
  13
  14 #include "wx/list.h"
  15 #include "wx/os2/private.h"
  16
  17 class WXDLLIMPEXP_CORE wxRegion : public wxRegionWithCombine
  18 {
  19 public:
  20     wxRegion( wxCoord x
  21              ,wxCoord y
  22              ,wxCoord vWidth
  23              ,wxCoord vHeight
  24             );
  25     wxRegion( const wxPoint& rTopLeft
  26              ,const wxPoint& rBottomRight
  27             );
  28     wxRegion(const wxRect& rRect);
  29     wxRegion(WXHRGN hRegion, WXHDC hPS); // Hangs on to this region
  30     wxRegion(size_t n, const wxPoint *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
  31     wxRegion( const wxBitmap& bmp)
  32     {
  33         Union(bmp);
  34     }
  35     wxRegion( const wxBitmap& bmp,
  36               const wxColour& transColour, int tolerance = 0)
  37     {
  38         Union(bmp, transColour, tolerance);
  39     }
  40
  41     wxRegion();
  42     virtual ~wxRegion();
  43
  44     //
  45     // Modify region
  46     //
  47
  48     //
  49     // Clear current region
  50     //
  51     virtual void Clear();
  52
  53     //
  54     // Is region empty?
  55     //
  56     virtual bool IsEmpty() const;
  57
  58     //
  59     // Get internal region handle
  60     //
  61     WXHRGN GetHRGN() const;
  62
  63     void   SetPS(HPS hPS);
  64
  65 protected:
  66     virtual wxGDIRefData* CreateGDIRefData(void) const;
  67     virtual wxGDIRefData* CloneGDIRefData(const wxGDIRefData* pData) const;
  68
  69     virtual bool DoIsEqual(const wxRegion& region) const;
  70     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  71     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  72     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  73
  74     virtual bool DoOffset(wxCoord x, wxCoord y);
  75     virtual bool DoCombine(const wxRegion& region, wxRegionOp op);
  76
  77     friend class WXDLLIMPEXP_FWD_CORE wxRegionIterator;
  78     DECLARE_DYNAMIC_CLASS(wxRegion);
  79
  80 }; // end of CLASS wxRegion
  81
  82 class WXDLLIMPEXP_CORE wxRegionIterator : public wxObject
  83 {
  84 public:
  85     wxRegionIterator();
  86     wxRegionIterator(const wxRegion& rRegion);
  87     virtual ~wxRegionIterator();
  88
  89     void Reset(void) { m_lCurrent = 0; }
  90     void Reset(const wxRegion& rRegion);
  91
  92     operator bool (void) const { return m_lCurrent < m_lNumRects; }
  93     bool HaveRects(void) const { return m_lCurrent < m_lNumRects; }
  94
  95     void operator ++ (void);
  96     void operator ++ (int);
  97
  98     wxCoord GetX(void) const;
  99     wxCoord GetY(void) const;
 100     wxCoord GetW(void) const;
 101     wxCoord GetWidth(void) const { return GetW(); }
 102     wxCoord GetH(void) const;
 103     wxCoord GetHeight(void) const { return GetH(); }
 104     wxRect  GetRect(void) const { return wxRect(GetX(), GetY(), GetWidth(), GetHeight()); }
 105
 106 private:
 107     long                            m_lCurrent;
 108     long                            m_lNumRects;
 109     wxRegion                        m_vRegion;
 110     wxRect*                         m_pRects;
 111
 112     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 113 }; // end of wxRegionIterator
 114
 115 #endif // _WX_OS2_REGION_H_