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