include/wx/x11/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/x11/region.h
   3 // Purpose:     wxRegion class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart, Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_REGION_H_
  13 #define _WX_REGION_H_
  14
  15 #include "wx/list.h"
  16
  17 // ----------------------------------------------------------------------------
  18 // wxRegion
  19 // ----------------------------------------------------------------------------
  20
  21 class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
  22 {
  23 public:
  24     wxRegion() { }
  25
  26     wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
  27     {
  28         InitRect(x, y, w, h);
  29     }
  30
  31     wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
  32     {
  33         InitRect(topLeft.x, topLeft.y,
  34                  bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
  35     }
  36
  37     wxRegion( const wxRect& rect )
  38     {
  39         InitRect(rect.x, rect.y, rect.width, rect.height);
  40     }
  41
  42     wxRegion( size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE );
  43
  44     wxRegion( const wxBitmap& bmp)
  45     {
  46         Union(bmp);
  47     }
  48     wxRegion( const wxBitmap& bmp,
  49               const wxColour& transColour, int tolerance = 0)
  50     {
  51         Union(bmp, transColour, tolerance);
  52     }
  53
  54     virtual ~wxRegion();
  55
  56     // wxRegionBase methods
  57     virtual void Clear();
  58     virtual bool IsEmpty() const;
  59
  60 public:
  61     WXRegion *GetX11Region() const;
  62
  63 protected:
  64     // ref counting code
  65     virtual wxObjectRefData *CreateRefData() const;
  66     virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
  67
  68     // wxRegionBase pure virtuals
  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 DoUnionWithRect(const wxRect& rect);
  76     virtual bool DoUnionWithRegion(const wxRegion& region);
  77     virtual bool DoIntersect(const wxRegion& region);
  78     virtual bool DoSubtract(const wxRegion& region);
  79     virtual bool DoXor(const wxRegion& region);
  80
  81     // common part of ctors for a rectangle region
  82     void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  83
  84 private:
  85     DECLARE_DYNAMIC_CLASS(wxRegion)
  86 };
  87
  88 // ----------------------------------------------------------------------------
  89 // wxRegionIterator: decomposes a region into rectangles
  90 // ----------------------------------------------------------------------------
  91
  92 class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
  93 {
  94 public:
  95     wxRegionIterator();
  96     wxRegionIterator(const wxRegion& region);
  97
  98     void Reset() { m_current = 0u; }
  99     void Reset(const wxRegion& region);
 100
 101     operator bool () const;
 102     bool HaveRects() const;
 103
 104     void operator ++ ();
 105     void operator ++ (int);
 106
 107     wxCoord GetX() const;
 108     wxCoord GetY() const;
 109     wxCoord GetW() const;
 110     wxCoord GetWidth() const { return GetW(); }
 111     wxCoord GetH() const;
 112     wxCoord GetHeight() const { return GetH(); }
 113     wxRect GetRect() const;
 114
 115 private:
 116     size_t   m_current;
 117     wxRegion m_region;
 118
 119 private:
 120     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 121 };
 122
 123 #endif
 124 // _WX_REGION_H_