wxWidgets/include/wx/os2/region.h
David Webster 5a56a532f2 Fixes mostly to do with painting
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@8938 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2000-12-18 05:32:32 +00:00

247 lines
7.0 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: region.h
// Purpose: wxRegion class
// Author: David Webster
// Modified by:
// Created: 10/15/99
// RCS-ID: $Id$
// Copyright: (c) David Webster
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_REGION_H_
#define _WX_REGION_H_
#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( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
);
wxRegion( const wxPoint& rTopLeft
,const wxPoint& rBottomRight
);
wxRegion(const wxRect& rRect);
wxRegion(WXHRGN hRegion); // Hangs on to this region
wxRegion();
~wxRegion();
//
// Copying
//
inline wxRegion(const wxRegion& rSrc)
{ Ref(rSrc); }
inline wxRegion& operator = (const wxRegion& rSrc)
{ Ref(rSrc); return (*this); }
//
// Modify region
//
//
// Clear current region
//
void Clear(void);
//
// Union rectangle or region with this.
//
inline bool Union( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
)
{
return Combine( x
,y
,vWidth
,vHeight
,wxRGN_OR
);
}
inline bool Union( const wxRect& rRect) { return Combine(rRect, wxRGN_OR); }
inline bool Union(const wxRegion& rRegion) { return Combine(rRegion, wxRGN_OR); }
//
// Intersect rectangle or region with this.
//
inline bool Intersect( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
)
{
return Combine( x
,y
,vWidth
,vHeight
,wxRGN_AND
);
}
inline bool Intersect(const wxRect& rRect) { return Combine(rRect, wxRGN_AND); }
inline bool Intersect(const wxRegion& rRegion) { return Combine(rRegion, wxRGN_AND); }
//
// Subtract rectangle or region from this:
// Combines the parts of 'this' that are not part of the second region.
//
inline bool Subtract( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
)
{
return Combine( x
,y
,vWidth
,vHeight
,wxRGN_DIFF
);
}
inline bool Subtract(const wxRect& rRect) { return Combine(rRect, wxRGN_DIFF); }
inline bool Subtract(const wxRegion& rRegion) { return Combine(rRegion, wxRGN_DIFF); }
//
// XOR: the union of two combined regions except for any overlapping areas.
//
inline bool Xor( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
)
{
return Combine( x
,y
,vWidth
,vHeight
,wxRGN_XOR
);
}
inline bool Xor(const wxRect& rRect) { return Combine(rRect, wxRGN_XOR); }
inline bool Xor(const wxRegion& rRegion) { return Combine(rRegion, wxRGN_XOR); }
//
// Information on region
// Outer bounds of region
//
void GetBox( wxCoord& rX
,wxCoord& rY
,wxCoord& rWidth
,wxCoord& rHeight
) const;
wxRect GetBox(void) const;
//
// Is region empty?
//
bool Empty(void) const;
inline bool IsEmpty() const { return Empty(); }
//
// Tests
// Does the region contain the point (x,y)?
//
wxRegionContain Contains( wxCoord lX
,wxCoord lY
) const;
//
// Does the region contain the point pt?
//
wxRegionContain Contains(const wxPoint& rPoint) const;
//
// Does the region contain the rectangle (x, y, w, h)?
//
wxRegionContain Contains( wxCoord x
,wxCoord y
,wxCoord lWidth
,wxCoord lHeight
) const;
//
// Does the region contain the rectangle rect?
//
wxRegionContain Contains(const wxRect& rRect) const;
//
// Internal
//
bool Combine( wxCoord x
,wxCoord y
,wxCoord vWidth
,wxCoord vHeight
,wxRegionOp eOp
);
bool Combine( const wxRegion& rRegion
,wxRegionOp eOp
);
bool Combine( const wxRect& rRect
,wxRegionOp eOp
);
//
// Get internal region handle
//
WXHRGN GetHRGN(void) const;
void SetPS(HPS hPS);
}; // end of CLASS wxRegion
class WXDLLEXPORT wxRegionIterator : public wxObject
{
DECLARE_DYNAMIC_CLASS(wxRegionIterator);
public:
wxRegionIterator();
wxRegionIterator(const wxRegion& rRegion);
~wxRegionIterator();
void Reset(void) { m_lCurrent = 0; }
void Reset(const wxRegion& rRegion);
operator bool (void) const { return m_lCurrent < m_lNumRects; }
bool HaveRects(void) const { return m_lCurrent < m_lNumRects; }
void operator ++ (void);
void operator ++ (int);
wxCoord GetX(void) const;
wxCoord GetY(void) const;
wxCoord GetW(void) const;
wxCoord GetWidth(void) const { return GetW(); }
wxCoord GetH(void) const;
wxCoord GetHeight(void) const { return GetH(); }
wxRect GetRect(void) const { return wxRect(GetX(), GetY(), GetWidth(), GetHeight()); }
private:
long m_lCurrent;
long m_lNumRects;
wxRegion m_vRegion;
wxRect* m_pRects;
}; // end of wxRegionIterator
#endif
// _WX_REGION_H_