include/wx/mgl/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/mgl/region.h
   3 // Purpose:     wxRegion class
   4 // Author:      Vaclav Slavik
   5 // Created:     2001/03/12
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_MGL_REGION_H_
  12 #define _WX_MGL_REGION_H_
  13
  14 #include "wx/list.h"
  15
  16 class MGLRegion;
  17
  18 class WXDLLEXPORT wxRegion : public wxRegionBase
  19 {
  20 public:
  21     wxRegion();
  22     wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  23     wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight);
  24     wxRegion(const wxRect& rect);
  25     wxRegion(const MGLRegion& region);
  26     wxRegion(size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE );
  27     wxRegion(const wxBitmap& bmp)
  28     {
  29         Union(bmp);
  30     }
  31     wxRegion(const wxBitmap& bmp,
  32              const wxColour& transColour, int tolerance = 0)
  33     {
  34         Union(bmp, transColour, tolerance);
  35     }
  36
  37     virtual ~wxRegion();
  38
  39     // wxRegionBase methods
  40     virtual void Clear();
  41     virtual bool IsEmpty() const;
  42
  43     // implementation from now on:
  44     const MGLRegion& GetMGLRegion() const;
  45
  46 protected:
  47     // ref counting code
  48     virtual wxObjectRefData *CreateRefData() const;
  49     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  50
  51     // wxRegionBase pure virtuals
  52     virtual bool DoIsEqual(const wxRegion& region) const;
  53     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  54     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  55     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  56
  57     virtual bool DoOffset(wxCoord x, wxCoord y);
  58     virtual bool DoUnionWithRect(const wxRect& rect);
  59     virtual bool DoUnionWithRegion(const wxRegion& region);
  60     virtual bool DoIntersect(const wxRegion& region);
  61     virtual bool DoSubtract(const wxRegion& region);
  62     virtual bool DoXor(const wxRegion& region);
  63
  64 private:
  65     DECLARE_DYNAMIC_CLASS(wxRegion);
  66     friend class WXDLLIMPEXP_FWD_CORE wxRegionIterator;
  67 };
  68
  69
  70 WX_DECLARE_EXPORTED_LIST(wxRect, wxRegionRectList);
  71
  72 class WXDLLEXPORT wxRegionIterator : public wxObject
  73 {
  74 public:
  75     wxRegionIterator(void);
  76     wxRegionIterator(const wxRegion& region);
  77     virtual ~wxRegionIterator(void);
  78
  79     void Reset(void) { m_currentNode = NULL; }
  80     void Reset(const wxRegion& region);
  81
  82     operator bool (void) const { return (m_currentNode != NULL); }
  83
  84     bool HaveRects(void) const { return (m_currentNode != NULL); }
  85
  86     void operator ++ (void);
  87     void operator ++ (int);
  88
  89     wxCoord GetX(void) const;
  90     wxCoord GetY(void) const;
  91     wxCoord GetW(void) const;
  92     wxCoord GetWidth(void) const { return GetW(); }
  93     wxCoord GetH(void) const;
  94     wxCoord GetHeight(void) const { return GetH(); }
  95     wxRect GetRect() const { return wxRect(GetX(), GetY(), GetWidth(), GetHeight()); }
  96
  97 private:
  98     wxRegionRectList         m_rects;
  99     wxRegionRectList::Node  *m_currentNode;
 100
 101     DECLARE_DYNAMIC_CLASS(wxRegionIterator);
 102 };
 103
 104 #endif // _WX_MGL_REGION_H_