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 // Copyright:   (c) 1997-2002 wxWidgets team
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_MSW_REGION_H_
  12 #define _WX_MSW_REGION_H_
  13
  14 class WXDLLIMPEXP_CORE wxRegion : public wxRegionWithCombine
  15 {
  16 public:
  17     wxRegion();
  18     wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  19     wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight);
  20     wxRegion(const wxRect& rect);
  21     wxRegion(WXHRGN hRegion); // Hangs on to this region
  22     wxRegion(size_t n, const wxPoint *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
  23 #if wxUSE_IMAGE
  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 #endif // wxUSE_IMAGE
  34
  35     virtual ~wxRegion();
  36
  37     // wxRegionBase methods
  38     virtual void Clear();
  39     virtual bool IsEmpty() const;
  40
  41     // Get internal region handle
  42     WXHRGN GetHRGN() const;
  43
  44 protected:
  45     virtual wxGDIRefData *CreateGDIRefData() const;
  46     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
  47
  48     virtual bool DoIsEqual(const wxRegion& region) const;
  49     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  50     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  51     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  52
  53     virtual bool DoOffset(wxCoord x, wxCoord y);
  54     virtual bool DoCombine(const wxRegion& region, wxRegionOp op);
  55
  56     friend class WXDLLIMPEXP_FWD_CORE wxRegionIterator;
  57
  58     DECLARE_DYNAMIC_CLASS(wxRegion)
  59 };
  60
  61 class WXDLLIMPEXP_CORE wxRegionIterator : public wxObject
  62 {
  63 public:
  64     wxRegionIterator() { Init(); }
  65     wxRegionIterator(const wxRegion& region);
  66     wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
  67
  68     wxRegionIterator& operator=(const wxRegionIterator& ri);
  69
  70     virtual ~wxRegionIterator();
  71
  72     void Reset() { m_current = 0; }
  73     void Reset(const wxRegion& region);
  74
  75     bool HaveRects() const { return (m_current < m_numRects); }
  76
  77     operator bool () const { return HaveRects(); }
  78
  79     wxRegionIterator& operator++();
  80     wxRegionIterator operator++(int);
  81
  82     wxCoord GetX() const;
  83     wxCoord GetY() const;
  84     wxCoord GetW() const;
  85     wxCoord GetWidth() const { return GetW(); }
  86     wxCoord GetH() const;
  87     wxCoord GetHeight() const { return GetH(); }
  88
  89     wxRect GetRect() const { return wxRect(GetX(), GetY(), GetW(), GetH()); }
  90
  91 private:
  92     // common part of all ctors
  93     void Init();
  94
  95     long     m_current;
  96     long     m_numRects;
  97     wxRegion m_region;
  98     wxRect*  m_rects;
  99
 100     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 101 };
 102
 103 #endif // _WX_MSW_REGION_H_