Don't create multiple parent-less top level frames in layout sample.

[wxWidgets.git] / include / wx / region.h

diff --git a/include/wx/region.h b/include/wx/region.h
index aa208368f3530181636dc46fda3f65ce039dfb65..c81d1cddaf0e6e89a9efa760dff2157e5c2bac22 100644 (file)
--- a/include/wx/region.h
+++ b/include/wx/region.h
@@ -1,13 +1,292 @@
-#ifndef __REGIONH_BASE__
-#define __REGIONH_BASE__
-
-#if defined(__WINDOWS__)
-#include "wx/msw/region.h"
-#elif defined(__MOTIF__)
-#include "wx/xt/region.h"
-#elif defined(__GTK__)
-#include "wx/gtk/region.h"
-#endif
+/////////////////////////////////////////////////////////////////////////////
+// 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_
+
+#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 WXDLLIMPEXP_CORE 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, wxPolygonFillMode 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
+    // ---------
+
+    // 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(__WXMSW__) || \
+    ( defined(__WXMAC__) && wxOSX_USE_COCOA_OR_CARBON ) || \
+    defined(__WXPM__)
+
+#define wxHAS_REGION_COMBINE
+
+class WXDLLIMPEXP_CORE 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(__WXMSW__)
+    #include "wx/msw/region.h"
+#elif defined(__WXGTK20__)
+    #include "wx/gtk/region.h"
+#elif defined(__WXGTK__)
+    #include "wx/gtk1/region.h"
+#elif defined(__WXMOTIF__) || defined(__WXX11__)
+    #include "wx/x11/region.h"
+#elif defined(__WXDFB__)
+    #include "wx/dfb/region.h"
+#elif defined(__WXMAC__)
+    #include "wx/osx/region.h"
+#elif defined(__WXCOCOA__)
+    #include "wx/cocoa/region.h"
+#elif defined(__WXPM__)
+    #include "wx/os2/region.h"

 #endif
 #endif

-    // __REGIONH_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_