///////////////////////////////////////////////////////////////////////////// // Name: region.h // Purpose: wxRegion class // Author: AUTHOR // Modified by: // Created: ??/??/98 // RCS-ID: $Id$ // Copyright: (c) AUTHOR // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_REGION_H_ #define _WX_REGION_H_ #ifdef __GNUG__ #pragma interface "region.h" #endif #include "wx/list.h" #include "wx/gdiobj.h" #include "wx/gdicmn.h" class WXDLLEXPORT wxRect; class WXDLLEXPORT wxPoint; enum wxRegionContain { wxOutRegion = 0, wxPartRegion = 1, wxInRegion = 2 }; // So far, for internal use only enum wxRegionOp { wxRGN_AND, // Creates the intersection of the two combined regions. wxRGN_COPY, // Creates a copy of the region identified by hrgnSrc1. wxRGN_DIFF, // Combines the parts of hrgnSrc1 that are not part of hrgnSrc2. wxRGN_OR, // Creates the union of two combined regions. wxRGN_XOR // Creates the union of two combined regions except for any overlapping areas. }; class WXDLLEXPORT wxRegion : public wxGDIObject { DECLARE_DYNAMIC_CLASS(wxRegion); friend class WXDLLEXPORT wxRegionIterator; public: wxRegion(long x, long y, long w, long h); wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight); wxRegion(const wxRect& rect); wxRegion( WXHRGN hRegion ); wxRegion(); ~wxRegion(); //# Copying wxRegion(const wxRegion& r) : wxGDIObject() { Ref(r); } wxRegion& operator = (const wxRegion& r) { Ref(r); return (*this); } //# Modify region // Clear current region void Clear(); // Union rectangle or region with this. bool Union(long x, long y, long width, long height) { return Combine(x, y, width, height, wxRGN_OR); } bool Union(const wxRect& rect) { return Combine(rect, wxRGN_OR); } bool Union(const wxRegion& region) { return Combine(region, wxRGN_OR); } // Intersect rectangle or region with this. bool Intersect(long x, long y, long width, long height) { return Combine(x, y, width, height, wxRGN_AND); } bool Intersect(const wxRect& rect) { return Combine(rect, wxRGN_AND); } bool Intersect(const wxRegion& region) { return Combine(region, wxRGN_AND); } // Subtract rectangle or region from this: // Combines the parts of 'this' that are not part of the second region. bool Subtract(long x, long y, long width, long height) { return Combine(x, y, width, height, wxRGN_DIFF); } bool Subtract(const wxRect& rect) { return Combine(rect, wxRGN_DIFF); } bool Subtract(const wxRegion& region) { return Combine(region, wxRGN_DIFF); } // XOR: the union of two combined regions except for any overlapping areas. bool Xor(long x, long y, long width, long height) { return Combine(x, y, width, height, wxRGN_XOR); } bool Xor(const wxRect& rect) { return Combine(rect, wxRGN_XOR); } bool Xor(const wxRegion& region) { return Combine(region, wxRGN_XOR); } //# Information on region // Outer bounds of region void GetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const; wxRect GetBox() const ; // Is region empty? bool Empty() const; inline bool IsEmpty() const { return Empty(); } //# Tests // Does the region contain the point (x,y)? wxRegionContain Contains(long x, long y) const; // Does the region contain the point pt? wxRegionContain Contains(const wxPoint& pt) const; // Does the region contain the rectangle (x, y, w, h)? wxRegionContain Contains(long x, long y, long w, long h) const; // Does the region contain the rectangle rect? wxRegionContain Contains(const wxRect& rect) const; // Internal bool Combine(long x, long y, long width, long height, wxRegionOp op); bool Combine(const wxRegion& region, wxRegionOp op); bool Combine(const wxRect& rect, wxRegionOp op); const WXHRGN GetWXHRGN() const ; }; class WXDLLEXPORT wxRegionIterator : public wxObject { DECLARE_DYNAMIC_CLASS(wxRegionIterator) public: wxRegionIterator(); wxRegionIterator(const wxRegion& region); wxRegionIterator(const wxRegionIterator& iterator); ~wxRegionIterator(); wxRegionIterator& operator=(const wxRegionIterator& iterator); void Reset() { m_current = 0; } void Reset(const wxRegion& region); operator bool () const { return m_current < m_numRects; } bool HaveRects() const { return m_current < m_numRects; } wxRegionIterator& operator++(); wxRegionIterator operator++(int); long GetX() const; long GetY() const; long GetW() const; long GetWidth() const { return GetW(); } long GetH() const; long GetHeight() const { return GetH(); } wxRect GetRect() const { return wxRect(GetX(), GetY(), GetWidth(), GetHeight()); } private: long m_current; long m_numRects; wxRegion m_region; wxRect* m_rects; }; #endif // _WX_REGION_H_