remove always-true tests of unsigned >= 0

[wxWidgets.git] / src / gtk / region.cpp

diff --git a/src/gtk/region.cpp b/src/gtk/region.cpp
index 8af2c03eee82a6c71b5e5076508cf1b988eefc8e..2073c240461f5ee210affad11768de0b997a0cb9 100644 (file)
--- a/src/gtk/region.cpp
+++ b/src/gtk/region.cpp
@@ -1,357 +1,300 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        gtk/region.cpp
+// Name:        src/gtk/region.cpp

 // Purpose:
 // Author:      Robert Roebling
 // Purpose:
 // Author:      Robert Roebling

+// Modified:    VZ at 05.10.00: use AllocExclusive(), comparison fixed

 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "region.h"
-#endif
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"

 
 #include "wx/region.h"
 
 
 #include "wx/region.h"
 

-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#ifndef WX_PRECOMP
+    #include "wx/log.h"
+#endif
+
+#include "wx/gtk/private.h"

 
 
 
 

-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// wxRegionRefData: private class containing the information about the region
+// ----------------------------------------------------------------------------

 
 

-class wxRegionRefData: public wxObjectRefData
+class wxRegionRefData : public wxGDIRefData

 {
 public:
 {
 public:

-    wxRegionRefData();
-    ~wxRegionRefData();
+    wxRegionRefData()
+    {
+        m_region = NULL;
+    }
+
+    wxRegionRefData(const wxRegionRefData& refData)
+        : wxGDIRefData()
+    {
+        m_region = gdk_region_copy(refData.m_region);
+    }
+
+    virtual ~wxRegionRefData()
+    {
+        if (m_region)
+            gdk_region_destroy( m_region );
+    }

 
     GdkRegion  *m_region;
 
     GdkRegion  *m_region;

-    wxList      m_rects;

 };
 
 };
 

-wxRegionRefData::wxRegionRefData()
-{
-    m_region = (GdkRegion *) NULL;
-}
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------

 
 

-wxRegionRefData::~wxRegionRefData()
-{
-    if (m_region) gdk_region_destroy( m_region );
+#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))

 
 

-    wxNode *node = m_rects.First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        delete r;
-        node = node->Next();
-    }
-}
+IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
+IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)

 
 

-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// wxRegion construction
+// ----------------------------------------------------------------------------

 
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 
 
 #define M_REGIONDATA ((wxRegionRefData *)m_refData)
 

-IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
-
-wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
+void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)

 {
 {

-    m_refData = new wxRegionRefData();
-    GdkRegion *reg = gdk_region_new();

     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     rect.width = w;
     rect.height = h;
     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     rect.width = w;
     rect.height = h;

-    M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
-    gdk_region_destroy( reg );
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
+
+    m_refData = new wxRegionRefData();
+
+    M_REGIONDATA->m_region = gdk_region_rectangle( &rect );

 }
 
 }
 

-wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
+wxRegion::wxRegion( GdkRegion *region )

 {
     m_refData = new wxRegionRefData();
 {
     m_refData = new wxRegionRefData();

-    GdkRegion *reg = gdk_region_new();
-    GdkRectangle rect;
-    rect.x = topLeft.x;
-    rect.y = topLeft.y;
-    rect.width = bottomRight.x - rect.x;
-    rect.height = bottomRight.y - rect.y;
-    M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
-    gdk_region_destroy( reg );
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
+    M_REGIONDATA->m_region = gdk_region_copy( region );

 }
 
 }
 

-wxRegion::wxRegion( const wxRect& rect )
+wxRegion::wxRegion( size_t n, const wxPoint *points,
+                    wxPolygonFillMode fillStyle )

 {
 {

+    GdkPoint *gdkpoints = new GdkPoint[n];
+    for ( size_t i = 0 ; i < n ; i++ )
+    {
+        gdkpoints[i].x = points[i].x;
+        gdkpoints[i].y = points[i].y;
+    }
+

     m_refData = new wxRegionRefData();
     m_refData = new wxRegionRefData();

-    GdkRegion *reg = gdk_region_new();
-    GdkRectangle g_rect;
-    g_rect.x = rect.x;
-    g_rect.y = rect.y;
-    g_rect.width = rect.width;
-    g_rect.height = rect.height;
-    M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
-    gdk_region_destroy( reg );
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
+
+    GdkRegion* reg = gdk_region_polygon
+                     (
+                        gdkpoints,
+                        n,
+                        fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
+                                                    : GDK_EVEN_ODD_RULE
+                     );
+
+    M_REGIONDATA->m_region = reg;
+
+    delete [] gdkpoints;

 }
 
 }
 

-wxRegion::wxRegion()
+wxRegion::~wxRegion()

 {
 {

+    // m_refData unrefed in ~wxObject

 }
 
 }
 

-wxRegion::~wxRegion()
+wxGDIRefData *wxRegion::CreateGDIRefData() const

 {
 {

+    return new wxRegionRefData;

 }
 
 }
 

-bool wxRegion::operator == ( const wxRegion& region )
+wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const

 {
 {

-    return m_refData == region.m_refData;
+    return new wxRegionRefData(*(wxRegionRefData *)data);

 }
 
 }
 

-bool wxRegion::operator != ( const wxRegion& region )
+// ----------------------------------------------------------------------------
+// wxRegion comparison
+// ----------------------------------------------------------------------------
+
+bool wxRegion::DoIsEqual(const wxRegion& region) const

 {
 {

-    return m_refData != region.m_refData;
+    return gdk_region_equal(M_REGIONDATA->m_region,
+                            M_REGIONDATA_OF(region)->m_region);

 }
 
 }
 

+// ----------------------------------------------------------------------------
+// wxRegion operations
+// ----------------------------------------------------------------------------
+

 void wxRegion::Clear()
 {
     UnRef();
 }
 
 void wxRegion::Clear()
 {
     UnRef();
 }
 

-bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+bool wxRegion::DoUnionWithRect(const wxRect& r)

 {
 {

-    GdkRectangle rect;
-    rect.x = x;
-    rect.y = y;
-    rect.width = width;
-    rect.height = height;
-    if (!m_refData)
+    // workaround for a strange GTK/X11 bug: taking union with an empty
+    // rectangle results in an empty region which is definitely not what we
+    // want
+    if ( r.IsEmpty() )
+        return true;
+
+    if ( !m_refData )

     {
     {

-        m_refData = new wxRegionRefData();
-        GdkRegion *reg = gdk_region_new();
-        M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
-        gdk_region_destroy( reg );
+        InitRect(r.x, r.y, r.width, r.height);

     }
     else
     {
     }
     else
     {

-        GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
-        gdk_region_destroy( M_REGIONDATA->m_region );
-        M_REGIONDATA->m_region = reg;
-    }
-    
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
+        AllocExclusive();

 
 

-    return TRUE;
-}
+        GdkRectangle rect;
+        rect.x = r.x;
+        rect.y = r.y;
+        rect.width = r.width;
+        rect.height = r.height;

 
 

-bool wxRegion::Union( const wxRect& rect )
-{
-    return Union( rect.x, rect.y, rect.width, rect.height );
+        gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
+    }
+
+    return true;

 }
 
 }
 

-bool wxRegion::Union( const wxRegion& region )
+bool wxRegion::DoUnionWithRegion( const wxRegion& region )

 {
 {

-    if (region.IsNull())
-        return FALSE;
+    wxCHECK_MSG( region.Ok(), false, wxT("invalid region") );

 
     if (!m_refData)
     {
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     }
 
     if (!m_refData)
     {
         m_refData = new wxRegionRefData();
         M_REGIONDATA->m_region = gdk_region_new();
     }

-
-    GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
-
-    wxNode *node = region.GetRectList()->First();
-    while (node)
+    else

     {
     {

-        wxRect *r = (wxRect*)node->Data();
-        M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
-        node = node->Next();
+        AllocExclusive();

     }
 
     }
 

-    return TRUE;
-}
+    gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );

 
 

-bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
-{
-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
-    
-    wxRegion reg( x, y, width, height );
-    Intersect( reg );
-    return TRUE;
+    return true;

 }
 
 }
 

-bool wxRegion::Intersect( const wxRect& rect )
+bool wxRegion::DoIntersect( const wxRegion& region )

 {
 {

+    wxCHECK_MSG( region.Ok(), false, wxT("invalid region") );
+

     if (!m_refData)
     {
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
+        // intersecting with invalid region doesn't make sense
+        return false;

     }
     }

-    
-    wxRegion reg( rect );
-    Intersect( reg );
-    return TRUE;
-}

 
 

-bool wxRegion::Intersect( const wxRegion& region )
-{
-    if (region.IsNull())
-        return FALSE;
+    AllocExclusive();

 
 

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-        return TRUE;
-    }
-    
-    GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
-    return TRUE;
+    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
+
+    return true;

 }
 
 }
 

-bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+bool wxRegion::DoSubtract( const wxRegion& region )

 {
 {

+    wxCHECK_MSG( region.Ok(), false, wxT("invalid region") );
+

     if (!m_refData)
     {
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
+        // subtracting from an invalid region doesn't make sense
+        return false;

     }
 
     }
 

-    wxRegion reg( x, y, width, height );
-    Subtract( reg );
-    return TRUE;
-}
+    AllocExclusive();

 
 

-bool wxRegion::Subtract( const wxRect& rect )
-{
-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+    gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );

 
 

-    wxRegion reg( rect );
-    Subtract( reg );
-    return TRUE;
+    return true;

 }
 
 }
 

-bool wxRegion::Subtract( const wxRegion& region )
+bool wxRegion::DoXor( const wxRegion& region )

 {
 {

-    if (region.IsNull())
-        return FALSE;
+    wxCHECK_MSG( region.Ok(), false, wxT("invalid region") );

 
     if (!m_refData)
     {
 
     if (!m_refData)
     {

-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
+        return false;

     }
 
     }
 

-    GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
-    return TRUE;
-}
+    AllocExclusive();

 
 

-bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
-{
-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+    gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );

 
 

-    wxRegion reg( x, y, width, height );
-    Xor( reg );
-    return TRUE;
+    return true;

 }
 
 }
 

-bool wxRegion::Xor( const wxRect& rect )
+bool wxRegion::DoOffset( wxCoord x, wxCoord y )

 {
     if (!m_refData)
 {
     if (!m_refData)

-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+        return false;

 
 

-    wxRegion reg( rect );
-    Xor( reg );
-    return TRUE;
-}
+    AllocExclusive();

 
 

-bool wxRegion::Xor( const wxRegion& region )
-{
-    if (region.IsNull())
-        return NULL;
+    gdk_region_offset( M_REGIONDATA->m_region, x, y );

 
 

-    if (!m_refData)
-    {
-        m_refData = new wxRegionRefData();
-        M_REGIONDATA->m_region = gdk_region_new();
-    }
+    return true;
+}

 
 

-    GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
+// ----------------------------------------------------------------------------
+// wxRegion tests
+// ----------------------------------------------------------------------------

 
 

-    wxNode *node = region.GetRectList()->First();
-    while (node)
+bool wxRegion::DoGetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
+{
+    if ( m_refData )

     {
     {

-        wxRect *r = (wxRect*)node->Data();
-        M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
-        node = node->Next();
+        GdkRectangle rect;
+        gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
+        x = rect.x;
+        y = rect.y;
+        w = rect.width;
+        h = rect.height;
+
+        return true;

     }
     }

+    else
+    {
+        x = 0;
+        y = 0;
+        w = -1;
+        h = -1;

 
 

-    return TRUE;
-}
-
-void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
-{
-    x = 0;
-    y = 0;
-    w = -1;
-    h = -1;
-    if (m_refData)
-        return;
-
-    GdkRectangle rect;
-    gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
-    x = rect.x;
-    y = rect.y;
-    w = rect.width;
-    h = rect.height;
-}
-
-wxRect wxRegion::GetBox() const
-{
-    wxCoord x = 0;
-    wxCoord y = 0;
-    wxCoord w = -1;
-    wxCoord h = -1;
-    GetBox( x, y, w, h );
-    return wxRect( x, y, w, h );
+        return false;
+    }

 }
 
 }
 

-bool wxRegion::Empty() const
+bool wxRegion::IsEmpty() const

 {
     if (!m_refData)
 {
     if (!m_refData)

-        return TRUE;
+        return true;

 
     return gdk_region_empty( M_REGIONDATA->m_region );
 }
 
 
     return gdk_region_empty( M_REGIONDATA->m_region );
 }
 

-wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y ) const
+wxRegionContain wxRegion::DoContainsPoint( wxCoord x, wxCoord y ) const

 {
     if (!m_refData)
         return wxOutRegion;
 {
     if (!m_refData)
         return wxOutRegion;


@@ -362,16 +305,16 @@ wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y ) const
         return wxOutRegion;
 }
 
         return wxOutRegion;
 }
 

-wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const
+wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const

 {
     if (!m_refData)
         return wxOutRegion;
 
     GdkRectangle rect;
 {
     if (!m_refData)
         return wxOutRegion;
 
     GdkRectangle rect;

-    rect.x = x;
-    rect.y = y;
-    rect.width = w;
-    rect.height = h;
+    rect.x = r.x;
+    rect.y = r.y;
+    rect.width = r.width;
+    rect.height = r.height;

     GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
     switch (res)
     {
     GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
     switch (res)
     {


@@ -382,104 +325,154 @@ wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
     return wxOutRegion;
 }
 
     return wxOutRegion;
 }
 

-wxRegionContain wxRegion::Contains(const wxPoint& pt) const
-{
-    return Contains( pt.x, pt.y );
-}
-
-wxRegionContain wxRegion::Contains(const wxRect& rect) const
-{
-    return Contains( rect.x, rect.y, rect.width, rect.height );
-}
-

 GdkRegion *wxRegion::GetRegion() const
 {
     if (!m_refData)
 GdkRegion *wxRegion::GetRegion() const
 {
     if (!m_refData)

-        return (GdkRegion*) NULL;
+        return NULL;

 
     return M_REGIONDATA->m_region;
 }
 
 
     return M_REGIONDATA->m_region;
 }
 

-wxList *wxRegion::GetRectList() const
-{
-    if (!m_refData)
-        return (wxList*) NULL;
-
-    return &(M_REGIONDATA->m_rects);
-}
-
-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
-
-IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
+// ----------------------------------------------------------------------------
+// wxRegionIterator
+// ----------------------------------------------------------------------------

 
 wxRegionIterator::wxRegionIterator()
 {
 
 wxRegionIterator::wxRegionIterator()
 {

+    Init();

     Reset();
 }
 
 wxRegionIterator::wxRegionIterator( const wxRegion& region )
 {
     Reset();
 }
 
 wxRegionIterator::wxRegionIterator( const wxRegion& region )
 {

+    Init();

     Reset(region);
 }
 
     Reset(region);
 }
 

-void wxRegionIterator::Reset( const wxRegion& region )
+void wxRegionIterator::Init()

 {
 {

-    m_region = region;
-    Reset();
+    m_rects = NULL;
+    m_numRects = 0;
+}
+
+wxRegionIterator::~wxRegionIterator()
+{
+    wxDELETEA(m_rects);

 }
 
 }
 

-wxRegionIterator::operator bool () const
+void wxRegionIterator::CreateRects( const wxRegion& region )

 {
 {

-    return m_current < (size_t)m_region.GetRectList()->Number();
+    wxDELETEA(m_rects);
+    m_numRects = 0;
+
+    GdkRegion *gdkregion = region.GetRegion();
+    if (!gdkregion)
+        return;
+
+    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 );
+}
+
+void wxRegionIterator::Reset( const wxRegion& region )
+{
+    m_region = region;
+    CreateRects(region);
+    Reset();

 }
 
 bool wxRegionIterator::HaveRects() const
 {
 }
 
 bool wxRegionIterator::HaveRects() const
 {

-    return m_current < (size_t)m_region.GetRectList()->Number();
+    return m_current < m_numRects;

 }
 
 }
 

-void wxRegionIterator::operator ++ ()
+wxRegionIterator& wxRegionIterator::operator ++ ()

 {
 {

-    if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
+    if (HaveRects())
+        ++m_current;
+
+    return *this;

 }
 
 }
 

-void wxRegionIterator::operator ++ (int)
+wxRegionIterator wxRegionIterator::operator ++ (int)

 {
 {

-    if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
+    wxRegionIterator tmp = *this;
+
+    if (HaveRects())
+        ++m_current;
+
+    return tmp;

 }
 
 wxCoord wxRegionIterator::GetX() const
 {
 }
 
 wxCoord wxRegionIterator::GetX() const
 {

-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->x;
+    wxCHECK_MSG( HaveRects(), 0, wxT("invalid wxRegionIterator") );
+
+    return m_rects[m_current].x;

 }
 
 wxCoord wxRegionIterator::GetY() const
 {
 }
 
 wxCoord wxRegionIterator::GetY() const
 {

-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->y;
+    wxCHECK_MSG( HaveRects(), 0, wxT("invalid wxRegionIterator") );
+
+    return m_rects[m_current].y;

 }
 
 wxCoord wxRegionIterator::GetW() const
 {
 }
 
 wxCoord wxRegionIterator::GetW() const
 {

-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->width;
+    wxCHECK_MSG( HaveRects(), 0, wxT("invalid wxRegionIterator") );
+
+    return m_rects[m_current].width;

 }
 
 wxCoord wxRegionIterator::GetH() const
 {
 }
 
 wxCoord wxRegionIterator::GetH() const
 {

-    wxNode *node = m_region.GetRectList()->Nth( m_current );
-    if (!node) return 0;
-    wxRect *r = (wxRect*)node->Data();
-    return r->height;
+    wxCHECK_MSG( HaveRects(), 0, wxT("invalid wxRegionIterator") );
+
+    return m_rects[m_current].height;

 }
 
 }
 

+wxRect wxRegionIterator::GetRect() const
+{
+    wxRect r;
+    if( HaveRects() )
+        r = m_rects[m_current];

 
 

+    return r;
+}
+
+wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& ri)
+{
+    wxDELETEA(m_rects);
+
+    m_current = ri.m_current;
+    m_numRects = ri.m_numRects;
+    if ( m_numRects )
+    {
+        m_rects = new wxRect[m_numRects];
+        for ( unsigned int n = 0; n < m_numRects; n++ )
+            m_rects[n] = ri.m_rects[n];
+    }
+    else
+    {
+        m_rects = NULL;
+    }
+
+    return *this;
+}