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 // Copyright:   (c) Julian Smart, Robert Roebling
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #ifndef _WX_REGION_H_
  12 #define _WX_REGION_H_
  13
  14 #include "wx/list.h"
  15
  16 // ----------------------------------------------------------------------------
  17 // wxRegion
  18 // ----------------------------------------------------------------------------
  19
  20 class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
  21 {
  22 public:
  23     wxRegion() { }
  24
  25     wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
  26     {
  27         InitRect(x, y, w, h);
  28     }
  29
  30     wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
  31     {
  32         InitRect(topLeft.x, topLeft.y,
  33                  bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
  34     }
  35
  36     wxRegion( const wxRect& rect )
  37     {
  38         InitRect(rect.x, rect.y, rect.width, rect.height);
  39     }
  40
  41     wxRegion( size_t n, const wxPoint *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
  42
  43     wxRegion( const wxBitmap& bmp)
  44     {
  45         Union(bmp);
  46     }
  47     wxRegion( const wxBitmap& bmp,
  48               const wxColour& transColour, int tolerance = 0)
  49     {
  50         Union(bmp, transColour, tolerance);
  51     }
  52
  53     virtual ~wxRegion();
  54
  55     // wxRegionBase methods
  56     virtual void Clear();
  57     virtual bool IsEmpty() const;
  58
  59 public:
  60     WXRegion *GetX11Region() const;
  61
  62 protected:
  63     virtual wxGDIRefData *CreateGDIRefData() const;
  64     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
  65
  66     // wxRegionBase pure virtuals
  67     virtual bool DoIsEqual(const wxRegion& region) const;
  68     virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
  69     virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
  70     virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
  71
  72     virtual bool DoOffset(wxCoord x, wxCoord y);
  73     virtual bool DoUnionWithRect(const wxRect& rect);
  74     virtual bool DoUnionWithRegion(const wxRegion& region);
  75     virtual bool DoIntersect(const wxRegion& region);
  76     virtual bool DoSubtract(const wxRegion& region);
  77     virtual bool DoXor(const wxRegion& region);
  78
  79     // common part of ctors for a rectangle region
  80     void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
  81
  82 private:
  83     DECLARE_DYNAMIC_CLASS(wxRegion)
  84 };
  85
  86 // ----------------------------------------------------------------------------
  87 // wxRegionIterator: decomposes a region into rectangles
  88 // ----------------------------------------------------------------------------
  89
  90 class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
  91 {
  92 public:
  93     wxRegionIterator();
  94     wxRegionIterator(const wxRegion& region);
  95
  96     void Reset() { m_current = 0u; }
  97     void Reset(const wxRegion& region);
  98
  99     operator bool () const;
 100     bool HaveRects() const;
 101
 102     void operator ++ ();
 103     void operator ++ (int);
 104
 105     wxCoord GetX() const;
 106     wxCoord GetY() const;
 107     wxCoord GetW() const;
 108     wxCoord GetWidth() const { return GetW(); }
 109     wxCoord GetH() const;
 110     wxCoord GetHeight() const { return GetH(); }
 111     wxRect GetRect() const;
 112
 113 private:
 114     size_t   m_current;
 115     wxRegion m_region;
 116
 117 private:
 118     DECLARE_DYNAMIC_CLASS(wxRegionIterator)
 119 };
 120
 121 #endif
 122 // _WX_REGION_H_