wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight);
wxRegion(const wxRect& rect);
wxRegion();
+ wxRegion( const wxBitmap& bmp,
+ const wxColour& transColour = wxNullColour,
+ int tolerance = 0)
+ {
+ Union(bmp, transColour, tolerance);
+ }
+
~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); }
{ 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); }
{ 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(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); }
{ 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;
wxRegionContain Contains(long x, long y, long w, long h) const;
// Does the region contain the rectangle rect?
wxRegionContain Contains(const wxRect& rect) const;
-
+
+ // Convert the region to a B&W bitmap with the black pixels being inside
+ // the region.
+ wxBitmap ConvertToBitmap() const;
+
+ // Use the non-transparent pixels of a wxBitmap for the region to combine
+ // with this region. If the bitmap has a mask then it will be used,
+ // otherwise the colour to be treated as transparent may be specified,
+ // along with an optional tolerance value.
+ bool Union(const wxBitmap& bmp,
+ const wxColour& transColour = wxNullColour,
+ int tolerance = 0);
+
+
// Internal
bool Combine(long x, long y, long width, long height, wxRegionOp op);
bool Combine(const wxRegion& region, wxRegionOp op);
class WXDLLEXPORT wxRegionIterator : public wxObject
{
DECLARE_DYNAMIC_CLASS(wxRegionIterator)
-
+
public:
wxRegionIterator();
wxRegionIterator(const wxRegion& region);
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;