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 #if wxUSE_IMAGE
  25     wxRegion( const wxBitmap& bmp)
  26     {
  27         Union(bmp);
  28     }
  29     wxRegion( const wxBitmap& bmp,
  30               const wxColour& transColour, int tolerance = 0)
  31     {
  32         Union(bmp, transColour, tolerance);
  33     }
  34 #endif // wxUSE_IMAGE
  35
  36     virtual ~wxRegion();
  37
  38     // wxRegionBase methods
  39     virtual void Clear();
  40     virtual bool IsEmpty() const;
  41
  42     // Get internal region handle
  43     WXHRGN GetHRGN() const;
  44
  45 protected:
  46     virtual wxObjectRefData *CreateRefData() const;
  47     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  48
  49     virtual bool DoIsEqual(const wxRegion& region) const;
  50     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  51     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  52     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  53
  54     virtual bool DoOffset(wxCoord x, wxCoord y);
  55     virtual bool DoCombine(const wxRegion& region, wxRegionOp op);
  56
  57     friend class WXDLLIMPEXP_FWD_CORE wxRegionIterator;
  58
  59     DECLARE_DYNAMIC_CLASS(wxRegion)
  60 };
  61
  62 class WXDLLEXPORT wxRegionIterator : public wxObject
  63 {
  64 public:
  65     wxRegionIterator() { Init(); }
  66     wxRegionIterator(const wxRegion& region);
  67     wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
  68
  69     wxRegionIterator& operator=(const wxRegionIterator& ri);
  70
  71     virtual ~wxRegionIterator();
  72
  73     void Reset() { m_current = 0; }
  74     void Reset(const wxRegion& region);
  75
  76     bool HaveRects() const { return (m_current < m_numRects); }
  77
  78     operator bool () const { return HaveRects(); }
  79
  80     wxRegionIterator& operator++();
  81     wxRegionIterator operator++(int);
  82
  83     wxCoord GetX() const;
  84     wxCoord GetY() const;
  85     wxCoord GetW() const;
  86     wxCoord GetWidth() const { return GetW(); }
  87     wxCoord GetH() const;
  88     wxCoord GetHeight() const { return GetH(); }
  89
  90     wxRect GetRect() const { return wxRect(GetX(), GetY(), GetW(), GetH()); }
  91
  92 private:
  93     // common part of all ctors
  94     void Init();
  95
  96     long     m_current;
  97     long     m_numRects;
  98     wxRegion m_region;
  99     wxRect*  m_rects;
 100
 101     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 102 };
 103
 104 #endif // _WX_MSW_REGION_H_