X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/ae3c17b4013e80b99976c750c19fca47729517f6..f115bfec38b810f06ccc47544a4e2e2e410f73b1:/interface/wx/region.h

diff --git a/interface/wx/region.h b/interface/wx/region.h
index 6d8d212213..f7b9a466a2 100644
--- a/interface/wx/region.h
+++ b/interface/wx/region.h
@@ -3,7 +3,7 @@
 // Purpose:     interface of wxRegionIterator
 // Author:      wxWidgets team
 // RCS-ID:      $Id$
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -33,7 +33,6 @@ enum wxRegionContain
 
 /**
     @class wxRegionIterator
-    @wxheader{region.h}
 
     This class is used to iterate through the rectangles in a region,
     typically when examining the damaged regions of a window within an OnPaint call.
@@ -121,7 +120,7 @@ public:
         A wxPython alias for this operator is called Next.
         @endWxPythonOnly
     */
-    void operator ++();
+    wxRegionIterator& operator ++();
 
     /**
         Returns @true if there are still some rectangles; otherwise returns @false.
@@ -135,7 +134,6 @@ public:
 
 /**
     @class wxRegion
-    @wxheader{region.h}
 
     A wxRegion represents a simple or complex region on a device context or window.
 
@@ -159,6 +157,9 @@ class wxRegion : public wxGDIObject
 public:
     /**
         Default constructor.
+
+        This constructor creates an invalid, or null, object, i.e. calling
+        IsOk() on it returns @false and IsEmpty() returns @true.
     */
     wxRegion();
     /**
@@ -183,7 +184,7 @@ public:
         in the provided array.
         @a fillStyle parameter may have values @c wxWINDING_RULE or @c wxODDEVEN_RULE.
     */
-    wxRegion(size_t n, const wxPoint* points, int fillStyle = wxWINDING_RULE);
+    wxRegion(size_t n, const wxPoint* points, wxPolygonFillMode fillStyle = wxODDEVEN_RULE);
     /**
         Constructs a region using a bitmap. See Union() for more details.
     */
@@ -200,22 +201,30 @@ public:
         See @ref overview_refcount_destruct "reference-counted object destruction" for
         more info.
     */
-    ~wxRegion();
+    virtual ~wxRegion();
 
     /**
         Clears the current region.
+
+        The object becomes invalid, or null, after being cleared.
     */
-    void Clear();
+    virtual void Clear();
 
     /**
         Returns a value indicating whether the given point is contained within the region.
 
+        This method always returns @c wxOutRegion for an invalid region but
+        may, nevertheless, be safely called in this case.
+
         @return The return value is one of @c wxOutRegion and @c wxInRegion.
     */
-    wxRegionContain Contains(long& x, long& y) const;
+    wxRegionContain Contains(wxCoord x, wxCoord y) const;
     /**
         Returns a value indicating whether the given point is contained within the region.
 
+        This method always returns @c wxOutRegion for an invalid region but
+        may, nevertheless, be safely called in this case.
+
         @return The return value is one of @c wxOutRegion and @c wxInRegion.
     */
     wxRegionContain Contains(const wxPoint& pt) const;
@@ -223,17 +232,23 @@ public:
         Returns a value indicating whether the given rectangle is contained within the
         region.
 
+        This method always returns @c wxOutRegion for an invalid region but
+        may, nevertheless, be safely called in this case.
+
         @return One of ::wxOutRegion, ::wxPartRegion or ::wxInRegion.
 
         @note On Windows, only ::wxOutRegion and ::wxInRegion are returned; a value
               ::wxInRegion then indicates that all or some part of the region is
               contained in this region.
     */
-    wxRegionContain Contains(long& x, long& y, long& width, long& height) const;
+    wxRegionContain Contains(wxCoord x, wxCoord y, wxCoord width, wxCoord height) const;
     /**
         Returns a value indicating whether the given rectangle is contained within the
         region.
 
+        This method always returns @c wxOutRegion for an invalid region but
+        may, nevertheless, be safely called in this case.
+
         @return One of ::wxOutRegion, ::wxPartRegion or ::wxInRegion.
 
         @note On Windows, only ::wxOutRegion and ::wxInRegion are returned; a value
@@ -245,22 +260,29 @@ public:
     /**
         Convert the region to a black and white bitmap with the white pixels
         being inside the region.
+
+        This method can't be used for invalid region.
     */
     wxBitmap ConvertToBitmap() const;
 
     //@{
     /**
         Returns the outer bounds of the region.
+
+        This method returns 0-sized bounding box for invalid regions.
     */
     void GetBox(wxCoord& x, wxCoord& y, wxCoord& width,
                 wxCoord& height) const;
-    const wxRect  GetBox() const;
+    wxRect GetBox() const;
     //@}
 
     /**
         Finds the intersection of this region and another, rectangular region,
         specified using position and size.
 
+        This method always fails, i.e. returns @false, if this region is
+        invalid but may nevertheless be safely used even in this case.
+
         @return @true if successful, @false otherwise.
 
         @remarks Creates the intersection of the two regions, that is, the parts
@@ -272,6 +294,9 @@ public:
     /**
         Finds the intersection of this region and another, rectangular region.
 
+        This method always fails, i.e. returns @false, if this region is
+        invalid but may nevertheless be safely used even in this case.
+
         @return @true if successful, @false otherwise.
 
         @remarks Creates the intersection of the two regions, that is, the parts
@@ -282,6 +307,9 @@ public:
     /**
         Finds the intersection of this region and another region.
 
+        This method always fails, i.e. returns @false, if this region is
+        invalid but may nevertheless be safely used even in this case.
+
         @return @true if successful, @false otherwise.
 
         @remarks Creates the intersection of the two regions, that is, the parts
@@ -292,15 +320,17 @@ public:
 
     /**
         Returns @true if the region is empty, @false otherwise.
+
+        Always returns @true if the region is invalid.
     */
-    bool IsEmpty() const;
+    virtual bool IsEmpty() const;
 
     /**
         Returns @true if the region is equal to, i.e. covers the same area as,
         another one.
 
-        @note If both this region and @a region are invalid, they are
-              considered to be equal.
+        If both this region and @a region are both invalid, they are considered
+        to be equal.
     */
     bool IsEqual(const wxRegion& region) const;
 
@@ -309,6 +339,10 @@ public:
         Moves the region by the specified offsets in horizontal and vertical
         directions.
 
+        This method can't be called if the region is invalid as it doesn't make
+        sense to offset it then. Attempts to do it will result in assert
+        failure.
+
         @return @true if successful, @false otherwise (the region is unchanged
                  then).
     */
@@ -319,6 +353,9 @@ public:
     /**
         Subtracts a rectangular region from this region.
 
+        This method always fails, i.e. returns @false, if this region is
+        invalid but may nevertheless be safely used even in this case.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation combines the parts of 'this' region that are not
@@ -329,6 +366,9 @@ public:
     /**
         Subtracts a region from this region.
 
+        This method always fails, i.e. returns @false, if this region is
+        invalid but may nevertheless be safely used even in this case.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation combines the parts of 'this' region that are not
@@ -341,6 +381,10 @@ public:
         Finds the union of this region and another, rectangular region, specified using
         position and size.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given rectangle.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -351,6 +395,10 @@ public:
     /**
         Finds the union of this region and another, rectangular region.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given rectangle.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -361,6 +409,10 @@ public:
     /**
         Finds the union of this region and another region.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given @a region.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -398,6 +450,10 @@ public:
         Finds the Xor of this region and another, rectangular region, specified using
         position and size.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given rectangle.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -408,6 +464,10 @@ public:
     /**
         Finds the Xor of this region and another, rectangular region.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given rectangle.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -418,6 +478,10 @@ public:
     /**
         Finds the Xor of this region and another region.
 
+        This method can be used even if this region is invalid and has the
+        natural behaviour in this case, i.e. makes this region equal to the
+        given @a region.
+
         @return @true if successful, @false otherwise.
 
         @remarks This operation creates a region that combines all of this region
@@ -429,7 +493,7 @@ public:
     /**
         Assignment operator, using @ref overview_refcount.
     */
-    void operator =(const wxRegion& region);
+    wxRegion& operator=(const wxRegion& region);
 };
 
 /**