+ if (!m_refData)
+ return (GdkRegion*) NULL;
+
+ return M_REGIONDATA->m_region;
+}
+
+// ----------------------------------------------------------------------------
+// wxRegionIterator
+// ----------------------------------------------------------------------------
+
+#ifndef __WXGTK20__
+
+// the following structures must match the private structures
+// in X11 region code ( xc/lib/X11/region.h )
+
+// this makes the Region type transparent
+// and we have access to the region rectangles
+
+#include <gdk/gdkprivate.h>
+
+struct _XBox {
+ short x1, x2, y1, y2;
+};
+
+struct _XRegion {
+ long size , numRects;
+ _XBox *rects, extents;
+};
+
+#endif // GTK+ 1.x
+
+class wxRIRefData: public wxObjectRefData
+{
+public:
+ wxRIRefData() { Init(); }
+ virtual ~wxRIRefData();
+
+ void CreateRects( const wxRegion& r );
+
+ void Init() { m_rects = NULL; m_numRects = 0; }
+
+ wxRect *m_rects;
+ size_t m_numRects;
+};
+
+wxRIRefData::~wxRIRefData()
+{
+ delete [] m_rects;
+}
+
+void wxRIRefData::CreateRects( const wxRegion& region )
+{
+ delete [] m_rects;
+
+ Init();
+
+ GdkRegion *gdkregion = region.GetRegion();
+ if (!gdkregion)
+ return;
+
+#ifdef __WXGTK20__
+ GdkRectangle *gdkrects = NULL;
+ gint numRects = 0;
+ gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
+
+ m_numRects = numRects;
+ if (numRects)
+ {
+ m_rects = new wxRect[m_numRects];
+ for (size_t i=0; i < m_numRects; ++i)
+ {
+ GdkRectangle &gr = gdkrects[i];
+ wxRect &wr = m_rects[i];
+ wr.x = gr.x;
+ wr.y = gr.y;
+ wr.width = gr.width;
+ wr.height = gr.height;
+ }
+ }
+ g_free( gdkrects );
+#else // GTK+ 1.x
+ Region r = ((GdkRegionPrivate *)gdkregion)->xregion;
+ if (r)
+ {
+ m_numRects = r->numRects;
+ if (m_numRects)
+ {
+ m_rects = new wxRect[m_numRects];
+ for (size_t i=0; i < m_numRects; ++i)
+ {
+ _XBox &xr = r->rects[i];
+ wxRect &wr = m_rects[i];
+ wr.x = xr.x1;
+ wr.y = xr.y1;
+ wr.width = xr.x2-xr.x1;
+ wr.height = xr.y2-xr.y1;
+ }
+ }
+ }
+#endif // GTK+ 2.0/1.x
+}
+
+wxRegionIterator::wxRegionIterator()
+{
+ m_refData = new wxRIRefData();
+ Reset();
+}
+
+wxRegionIterator::wxRegionIterator( const wxRegion& region )
+{
+ m_refData = new wxRIRefData();
+ Reset(region);
+}
+
+void wxRegionIterator::Reset( const wxRegion& region )
+{
+ m_region = region;
+ ((wxRIRefData*)m_refData)->CreateRects(region);
+ Reset();
+}
+
+bool wxRegionIterator::HaveRects() const
+{
+ return m_current < ((wxRIRefData*)m_refData)->m_numRects;
+}
+
+wxRegionIterator& wxRegionIterator::operator ++ ()
+{
+ if (HaveRects())
+ ++m_current;
+
+ return *this;
+}
+
+wxRegionIterator wxRegionIterator::operator ++ (int)
+{
+ wxRegionIterator tmp = *this;
+ if (HaveRects())
+ ++m_current;
+
+ return tmp;
+}
+
+wxCoord wxRegionIterator::GetX() const
+{
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
+}
+
+wxCoord wxRegionIterator::GetY() const
+{
+ wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
+
+ return ((wxRIRefData*)m_refData)->m_rects[m_current].y;