include/wx/gtk1/region.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/gtk1/region.h
   3 // Purpose:
   4 // Author:      Robert Roebling
   5 // Copyright:   (c) 1998 Robert Roebling
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 #ifndef _WX_GTK_REGION_H_
  10 #define _WX_GTK_REGION_H_
  11
  12 #include "wx/list.h"
  13
  14 // ----------------------------------------------------------------------------
  15 // wxRegion
  16 // ----------------------------------------------------------------------------
  17
  18 class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
  19 {
  20 public:
  21     wxRegion() { }
  22
  23     wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
  24     {
  25         InitRect(x, y, w, h);
  26     }
  27
  28     wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
  29     {
  30         InitRect(topLeft.x, topLeft.y,
  31                  bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
  32     }
  33
  34     wxRegion( const wxRect& rect )
  35     {
  36         InitRect(rect.x, rect.y, rect.width, rect.height);
  37     }
  38
  39     wxRegion( size_t n, const wxPoint *points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
  40
  41     wxRegion( const wxBitmap& bmp)
  42     {
  43         Union(bmp);
  44     }
  45     wxRegion( const wxBitmap& bmp,
  46               const wxColour& transColour, int tolerance = 0)
  47     {
  48         Union(bmp, transColour, tolerance);
  49     }
  50
  51     virtual ~wxRegion();
  52
  53     // wxRegionBase methods
  54     virtual void Clear();
  55     virtual bool IsEmpty() const;
  56
  57 public:
  58     // Init with GdkRegion, set ref count to 2 so that
  59     // the C++ class will not destroy the region!
  60     wxRegion( GdkRegion *region );
  61
  62     GdkRegion *GetRegion() const;
  63
  64 protected:
  65     virtual wxGDIRefData *CreateGDIRefData() const;
  66     virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *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     bool HaveRects() const;
 102     operator bool () const { return HaveRects(); }
 103
 104     wxRegionIterator& operator ++ ();
 105     wxRegionIterator 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
 124 #endif
 125         // _WX_GTK_REGION_H_