X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/83df96d63a52ebb08b9e32549dc255354b4a18d0..55fbde1232bff0ed44c23775911574ac1b2f8a0a:/include/wx/region.h diff --git a/include/wx/region.h b/include/wx/region.h index 3815353f1e..eede02e617 100644 --- a/include/wx/region.h +++ b/include/wx/region.h @@ -1,23 +1,300 @@ +///////////////////////////////////////////////////////////////////////////// +// Name: wx/region.h +// Purpose: Base header for wxRegion +// Author: Julian Smart +// Modified by: +// Created: +// RCS-ID: $Id$ +// Copyright: (c) Julian Smart +// Licence: wxWindows Licence +///////////////////////////////////////////////////////////////////////////// + #ifndef _WX_REGION_H_BASE_ #define _WX_REGION_H_BASE_ -#if defined(__WXMSW__) -#include "wx/msw/region.h" -#elif defined(__WXMOTIF__) -#include "wx/motif/region.h" +#include "wx/gdiobj.h" +#include "wx/gdicmn.h" + +class WXDLLIMPEXP_FWD_CORE wxBitmap; +class WXDLLIMPEXP_FWD_CORE wxColour; +class WXDLLIMPEXP_FWD_CORE wxRegion; + +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// result of wxRegion::Contains() call +enum wxRegionContain +{ + wxOutRegion = 0, + wxPartRegion = 1, + wxInRegion = 2 +}; + +// these constants are used with wxRegion::Combine() in the ports which have +// this method +enum wxRegionOp +{ + // Creates the intersection of the two combined regions. + wxRGN_AND, + + // Creates a copy of the region + wxRGN_COPY, + + // Combines the parts of first region that are not in the second one + wxRGN_DIFF, + + // Creates the union of two combined regions. + wxRGN_OR, + + // Creates the union of two regions except for any overlapping areas. + wxRGN_XOR +}; + +// ---------------------------------------------------------------------------- +// wxRegionBase defines wxRegion API +// ---------------------------------------------------------------------------- + +class WXDLLEXPORT wxRegionBase : public wxGDIObject +{ +public: + // ctors + // ----- + + // none are defined here but the following should be available: +#if 0 + wxRegion(); + wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h); + wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight); + wxRegion(const wxRect& rect); + wxRegion(size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE); + wxRegion(const wxBitmap& bmp); + wxRegion(const wxBitmap& bmp, const wxColour& transp, int tolerance = 0); +#endif // 0 + + // operators + // --------- + + bool operator==(const wxRegion& region) const { return IsEqual(region); } + bool operator!=(const wxRegion& region) const { return !(*this == region); } + + + // accessors + // --------- + + bool Ok() const { return IsOk(); } + bool IsOk() const { return m_refData != NULL; } + + // Is region empty? + virtual bool IsEmpty() const = 0; + bool Empty() const { return IsEmpty(); } + + // Is region equal (i.e. covers the same area as another one)? + bool IsEqual(const wxRegion& region) const; + + // Get the bounding box + bool GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const + { return DoGetBox(x, y, w, h); } + wxRect GetBox() const + { + wxCoord x, y, w, h; + return DoGetBox(x, y, w, h) ? wxRect(x, y, w, h) : wxRect(); + } + + // Test if the given point or rectangle is inside this region + wxRegionContain Contains(wxCoord x, wxCoord y) const + { return DoContainsPoint(x, y); } + wxRegionContain Contains(const wxPoint& pt) const + { return DoContainsPoint(pt.x, pt.y); } + wxRegionContain Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) const + { return DoContainsRect(wxRect(x, y, w, h)); } + wxRegionContain Contains(const wxRect& rect) const + { return DoContainsRect(rect); } + + + // operations + // ---------- + + virtual void Clear() = 0; + + // Move the region + bool Offset(wxCoord x, wxCoord y) + { return DoOffset(x, y); } + bool Offset(const wxPoint& pt) + { return DoOffset(pt.x, pt.y); } + + // Union rectangle or region with this region. + bool Union(wxCoord x, wxCoord y, wxCoord w, wxCoord h) + { return DoUnionWithRect(wxRect(x, y, w, h)); } + bool Union(const wxRect& rect) + { return DoUnionWithRect(rect); } + bool Union(const wxRegion& region) + { return DoUnionWithRegion(region); } + +#if wxUSE_IMAGE + // Use the non-transparent pixels of a wxBitmap for the region to combine + // with this region. First version takes transparency from bitmap's mask, + // second lets the user specify the colour to be treated as transparent + // along with an optional tolerance value. + // NOTE: implemented in common/rgncmn.cpp + bool Union(const wxBitmap& bmp); + bool Union(const wxBitmap& bmp, const wxColour& transp, int tolerance = 0); +#endif // wxUSE_IMAGE + + // Intersect rectangle or region with this one. + bool Intersect(wxCoord x, wxCoord y, wxCoord w, wxCoord h); + bool Intersect(const wxRect& rect); + bool Intersect(const wxRegion& region) + { return DoIntersect(region); } + + // Subtract rectangle or region from this: + // Combines the parts of 'this' that are not part of the second region. + bool Subtract(wxCoord x, wxCoord y, wxCoord w, wxCoord h); + bool Subtract(const wxRect& rect); + bool Subtract(const wxRegion& region) + { return DoSubtract(region); } + + // XOR: the union of two combined regions except for any overlapping areas. + bool Xor(wxCoord x, wxCoord y, wxCoord w, wxCoord h); + bool Xor(const wxRect& rect); + bool Xor(const wxRegion& region) + { return DoXor(region); } + + + // Convert the region to a B&W bitmap with the white pixels being inside + // the region. + wxBitmap ConvertToBitmap() const; + +protected: + virtual bool DoIsEqual(const wxRegion& region) const = 0; + virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const = 0; + virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const = 0; + virtual wxRegionContain DoContainsRect(const wxRect& rect) const = 0; + + virtual bool DoOffset(wxCoord x, wxCoord y) = 0; + + virtual bool DoUnionWithRect(const wxRect& rect) = 0; + virtual bool DoUnionWithRegion(const wxRegion& region) = 0; + + virtual bool DoIntersect(const wxRegion& region) = 0; + virtual bool DoSubtract(const wxRegion& region) = 0; + virtual bool DoXor(const wxRegion& region) = 0; +}; + +// some ports implement a generic Combine() function while others only +// implement individual wxRegion operations, factor out the common code for the +// ports with Combine() in this class +#if defined(__WXPALMOS__) || \ + defined(__WXMSW__) || \ + defined(__WXMAC__) || \ + defined(__WXPM__) + +#define wxHAS_REGION_COMBINE + +class WXDLLEXPORT wxRegionWithCombine : public wxRegionBase +{ +public: + // these methods are not part of public API as they're not implemented on + // all ports + bool Combine(wxCoord x, wxCoord y, wxCoord w, wxCoord h, wxRegionOp op); + bool Combine(const wxRect& rect, wxRegionOp op); + bool Combine(const wxRegion& region, wxRegionOp op) + { return DoCombine(region, op); } + + +protected: + // the real Combine() method, to be defined in the derived class + virtual bool DoCombine(const wxRegion& region, wxRegionOp op) = 0; + + // implement some wxRegionBase pure virtuals in terms of Combine() + virtual bool DoUnionWithRect(const wxRect& rect); + virtual bool DoUnionWithRegion(const wxRegion& region); + virtual bool DoIntersect(const wxRegion& region); + virtual bool DoSubtract(const wxRegion& region); + virtual bool DoXor(const wxRegion& region); +}; + +#endif // ports with wxRegion::Combine() + +#if defined(__WXPALMOS__) + #include "wx/palmos/region.h" +#elif defined(__WXMSW__) + #include "wx/msw/region.h" +#elif defined(__WXGTK20__) + #include "wx/gtk/region.h" #elif defined(__WXGTK__) -#include "wx/gtk/region.h" -#elif defined(__WXX11__) -#include "wx/x11/region.h" + #include "wx/gtk1/region.h" +#elif defined(__WXMOTIF__) || defined(__WXX11__) + #include "wx/x11/region.h" #elif defined(__WXMGL__) -#include "wx/mgl/region.h" + #include "wx/mgl/region.h" +#elif defined(__WXDFB__) + #include "wx/dfb/region.h" #elif defined(__WXMAC__) -#include "wx/mac/region.h" + #include "wx/mac/region.h" +#elif defined(__WXCOCOA__) + #include "wx/cocoa/region.h" #elif defined(__WXPM__) -#include "wx/os2/region.h" -#elif defined(__WXSTUBS__) -#include "wx/stubs/region.h" + #include "wx/os2/region.h" #endif -#endif - // _WX_REGION_H_BASE_ +// ---------------------------------------------------------------------------- +// inline functions implementation +// ---------------------------------------------------------------------------- + +// NB: these functions couldn't be defined in the class declaration as they use +// wxRegion and so can be only defined after including the header declaring +// the real class + +inline bool wxRegionBase::Intersect(const wxRect& rect) +{ + return DoIntersect(wxRegion(rect)); +} + +inline bool wxRegionBase::Subtract(const wxRect& rect) +{ + return DoSubtract(wxRegion(rect)); +} + +inline bool wxRegionBase::Xor(const wxRect& rect) +{ + return DoXor(wxRegion(rect)); +} + +// ...and these functions are here because they call the ones above, and its +// not really proper to call an inline function before its defined inline. + +inline bool wxRegionBase::Intersect(wxCoord x, wxCoord y, wxCoord w, wxCoord h) +{ + return Intersect(wxRect(x, y, w, h)); +} + +inline bool wxRegionBase::Subtract(wxCoord x, wxCoord y, wxCoord w, wxCoord h) +{ + return Subtract(wxRect(x, y, w, h)); +} + +inline bool wxRegionBase::Xor(wxCoord x, wxCoord y, wxCoord w, wxCoord h) +{ + return Xor(wxRect(x, y, w, h)); +} + +#ifdef wxHAS_REGION_COMBINE + +inline bool wxRegionWithCombine::Combine(wxCoord x, + wxCoord y, + wxCoord w, + wxCoord h, + wxRegionOp op) +{ + return DoCombine(wxRegion(x, y, w, h), op); +} + +inline bool wxRegionWithCombine::Combine(const wxRect& rect, wxRegionOp op) +{ + return DoCombine(wxRegion(rect), op); +} + +#endif // wxHAS_REGION_COMBINE + +#endif // _WX_REGION_H_BASE_