Fix HTML help on Mac.

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

diff --git a/src/gtk/region.cpp b/src/gtk/region.cpp
index 3003e15b58be1e1930ace077c1865acc18ad454c..2c31667721a289500e07d11953029ee3461a2542 100644 (file)
--- a/src/gtk/region.cpp
+++ b/src/gtk/region.cpp
@@ -1,54 +1,108 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

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

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

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

 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling

-// Licence:    wxWindows licence
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

+// ============================================================================
+// declarations
+// ============================================================================
+

 #ifdef __GNUG__
 #ifdef __GNUG__

-#pragma implementation "region.h"
+    #pragma implementation "region.h"

 #endif
 
 #endif
 

+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+

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

-#include "gdk/gdk.h"
-#include "gtk/gtk.h"
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>

 
 

-#ifdef __WXDEBUG__
-#ifdef NULL
-#undef NULL
-#endif
-#define NULL ((void*)0L)
+// Unfortunately the new way of implementing the region iterator
+// doesn't work with GTK+ 2.0 or above (can't access a Region in
+// GdkPrivateRegion)
+#ifdef __WXGTK20__
+#define OLDCODE 1
+#else
+#define OLDCODE 0

 #endif
 
 #endif
 

-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
+#include "wx/log.h"
+
+// ----------------------------------------------------------------------------
+// wxRegionRefData: private class containing the information about the region
+// ----------------------------------------------------------------------------

 
 

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

 {
 {

-  public:
-  
+public:

     wxRegionRefData();
     wxRegionRefData();

-    ~wxRegionRefData();
-  
-  public:    
+    wxRegionRefData(const wxRegionRefData& refData);
+    virtual ~wxRegionRefData();

 
     GdkRegion  *m_region;
 
     GdkRegion  *m_region;

+#if OLDCODE

     wxList      m_rects;
     wxList      m_rects;

+#endif

 };
 
 };
 

+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+#define M_REGIONDATA ((wxRegionRefData *)m_refData)
+#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
+
+IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject);
+IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxRegionRefData
+// ----------------------------------------------------------------------------
+

 wxRegionRefData::wxRegionRefData()
 {
     m_region = (GdkRegion *) NULL;
 }
 
 wxRegionRefData::wxRegionRefData()
 {
     m_region = (GdkRegion *) NULL;
 }
 

+wxRegionRefData::wxRegionRefData(const wxRegionRefData& refData)
+{
+#ifdef __WXGTK20__
+    m_region = gdk_region_copy(refData.m_region);
+#else
+    m_region = gdk_region_new();
+    GdkRegion *regCopy = gdk_regions_union(m_region, refData.m_region);
+    gdk_region_destroy(m_region);
+    m_region = regCopy;
+#endif
+
+#if OLDCODE
+    wxNode *node = refData.m_rects.First();
+    while (node)
+    {
+        wxRect *r = (wxRect*)node->Data();
+        m_rects.Append( (wxObject*) new wxRect(*r) );
+        node = node->Next();
+    }
+#endif
+}
+

 wxRegionRefData::~wxRegionRefData()
 {
     if (m_region) gdk_region_destroy( m_region );
 wxRegionRefData::~wxRegionRefData()
 {
     if (m_region) gdk_region_destroy( m_region );

-  
+
+#if OLDCODE

     wxNode *node = m_rects.First();
     while (node)
     {
     wxNode *node = m_rects.First();
     while (node)
     {


@@ -56,15 +110,20 @@ wxRegionRefData::~wxRegionRefData()
         delete r;
         node = node->Next();
     }
         delete r;
         node = node->Next();
     }

+#endif

 }
 
 }
 

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

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

-IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
-  
-wxRegion::wxRegion( long x, long y, long w, long h )
+wxRegion::wxRegion()
+{
+}
+
+wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )

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


@@ -73,9 +132,16 @@ wxRegion::wxRegion( long x, long y, long w, long h )
     rect.y = y;
     rect.width = w;
     rect.height = h;
     rect.y = y;
     rect.width = w;
     rect.height = h;

+#ifdef __WXGTK20__
+    gdk_region_union_with_rect( reg, &rect );
+    M_REGIONDATA->m_region = reg;
+#else

     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
     gdk_region_destroy( reg );
     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
     gdk_region_destroy( reg );

+#endif
+#if OLDCODE

     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );

+#endif

 }
 
 wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
 }
 
 wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )


@@ -87,9 +153,16 @@ wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
     rect.y = topLeft.y;
     rect.width = bottomRight.x - rect.x;
     rect.height = bottomRight.y - rect.y;
     rect.y = topLeft.y;
     rect.width = bottomRight.x - rect.x;
     rect.height = bottomRight.y - rect.y;

+#ifdef __WXGTK20__
+    gdk_region_union_with_rect( reg, &rect );
+    M_REGIONDATA->m_region = reg;
+#else

     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
     gdk_region_destroy( reg );
     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
     gdk_region_destroy( reg );

+#endif
+#if OLDCODE

     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );

+#endif

 }
 
 wxRegion::wxRegion( const wxRect& rect )
 }
 
 wxRegion::wxRegion( const wxRect& rect )


@@ -101,79 +174,119 @@ wxRegion::wxRegion( const wxRect& rect )
     g_rect.y = rect.y;
     g_rect.width = rect.width;
     g_rect.height = rect.height;
     g_rect.y = rect.y;
     g_rect.width = rect.width;
     g_rect.height = rect.height;

+#ifdef __WXGTK20__
+    gdk_region_union_with_rect( reg, &g_rect );
+    M_REGIONDATA->m_region = reg;
+#else

     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
     gdk_region_destroy( reg );
     M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
     gdk_region_destroy( reg );

-  
-    wxNode *node = M_REGIONDATA->m_rects.First();
-    while (node)
-    {
-        wxRect *r = (wxRect*)node->Data();
-        M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
-        node = node->Next();
-    }
+#endif
+#if OLDCODE
+    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
+#endif

 }
 
 }
 

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

 {
 {

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

 }
 
 }
 

-wxRegion::~wxRegion()
+bool wxRegion::operator==( const wxRegion& region )

 {
 {

+    // VZ: compare the regions themselves, not the pointers to ref data!
+    return gdk_region_equal(M_REGIONDATA->m_region,
+                            M_REGIONDATA_OF(region)->m_region);

 }
 
 }
 

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

 {
 {

-    return m_refData == region.m_refData; 
+    return !(*this == region);

 }
 
 }
 

-bool wxRegion::operator != ( const wxRegion& region )
+void wxRegion::Unshare()

 {
 {

-    return m_refData != region.m_refData; 
+    if ( !m_refData )
+    {
+        m_refData = new wxRegionRefData;
+        M_REGIONDATA->m_region = gdk_region_new();
+    }
+    else if ( m_refData->GetRefCount() > 1 )
+    {
+        wxRegionRefData *refData = new wxRegionRefData(*M_REGIONDATA);
+        UnRef();
+        m_refData = refData;
+    }
+    //else: we're not shared

 }
 
 }
 

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

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

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

 }
 
 }
 

-bool wxRegion::Union( long x, long y, long width, long height )
+bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )

 {
     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     rect.width = width;
     rect.height = height;
 {
     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     rect.width = width;
     rect.height = height;

-    GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
+    if (!m_refData)
+    {
+        m_refData = new wxRegionRefData();
+        GdkRegion *reg = gdk_region_new();
+#ifdef __WXGTK20__
+        gdk_region_union_with_rect( reg, &rect );
+        M_REGIONDATA->m_region = reg;
+#else
+        M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
+        gdk_region_destroy( reg );
+#endif
+    }
+    else
+    {
+        Unshare();
+
+#ifdef __WXGTK20__
+        gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
+#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;
+#endif
+    }
+
+#if OLDCODE

     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
     M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );

+#endif
+

     return TRUE;
 }
 
 bool wxRegion::Union( const wxRect& rect )
 {
     return TRUE;
 }
 
 bool wxRegion::Union( const wxRect& rect )
 {

-    GdkRectangle g_rect;
-    g_rect.x = rect.x;
-    g_rect.y = rect.y;
-    g_rect.width = rect.width;
-    g_rect.height = rect.height;
-    GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &g_rect );
-    gdk_region_destroy( M_REGIONDATA->m_region );
-    M_REGIONDATA->m_region = reg;
-    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
-    return TRUE;
+    return Union( rect.x, rect.y, rect.width, rect.height );

 }
 
 bool wxRegion::Union( const wxRegion& region )
 {
 }
 
 bool wxRegion::Union( const wxRegion& region )
 {

+    if (region.IsNull())
+        return FALSE;
+
+    Unshare();
+
+#ifdef __WXGTK20__
+    gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
+#else

     GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
     GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;

-  
+#endif
+
+#if OLDCODE

     wxNode *node = region.GetRectList()->First();
     while (node)
     {
     wxNode *node = region.GetRectList()->First();
     while (node)
     {


@@ -181,74 +294,161 @@ bool wxRegion::Union( const wxRegion& region )
         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
         node = node->Next();
     }
         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
         node = node->Next();
     }

-  
+#endif
+

     return TRUE;
 }
 
     return TRUE;
 }
 

-bool wxRegion::Intersect( long x, long y, long width, long height )
+bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )

 {
     wxRegion reg( x, y, width, height );
 {
     wxRegion reg( x, y, width, height );

-    Intersect( reg );
-    return TRUE;
+
+    return Intersect( reg );

 }
 
 bool wxRegion::Intersect( const wxRect& rect )
 {
     wxRegion reg( rect );
 }
 
 bool wxRegion::Intersect( const wxRect& rect )
 {
     wxRegion reg( rect );

-    Intersect( reg );
-    return TRUE;
+    return Intersect( reg );

 }
 
 }
 

-bool wxRegion::Intersect( const wxRegion& region )
+// this helper function just computes the region intersection without updating
+// the list of rectangles each region maintaints: this allows us to call it
+// from Intersect() itself without going into infinite recursion as we would
+// if we called Intersect() itself recursively
+bool wxRegion::IntersectRegionOnly(const wxRegion& region)

 {
 {

+    Unshare();
+
+#ifdef __WXGTK20__
+    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
+#else

     GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
     GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;

+#endif
+

     return TRUE;
 }
 
     return TRUE;
 }
 

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

 {
 {

-    wxRegion reg( x, y, width, height );
-    Subtract( reg );
+    if (region.IsNull())
+        return FALSE;
+
+    if (!m_refData)
+    {
+        m_refData = new wxRegionRefData();
+        M_REGIONDATA->m_region = gdk_region_new();
+        return TRUE;
+    }
+
+    if ( !IntersectRegionOnly(region) )
+    {
+        GetRectList()->Clear();
+
+        return FALSE;
+    }
+
+    // we need to update the rect list as well
+#if OLDCODE
+    wxList& list = *GetRectList();
+    wxNode *node = list.First();
+    while (node)
+    {
+        wxRect *r = (wxRect*)node->Data();
+
+        wxRegion regCopy = region;
+        if ( regCopy.IntersectRegionOnly(*r) )
+        {
+            // replace the node with the intersection
+            *r = regCopy.GetBox();
+        }
+        else
+        {
+            // TODO remove the rect from the list
+            r->width = 0;
+            r->height = 0;
+        }
+
+        node = node->Next();
+    }
+#endif

     return TRUE;
 }
 
     return TRUE;
 }
 

+bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
+{
+    wxRegion reg( x, y, width, height );
+    return Subtract( reg );
+}
+

 bool wxRegion::Subtract( const wxRect& rect )
 {
     wxRegion reg( rect );
 bool wxRegion::Subtract( const wxRect& rect )
 {
     wxRegion reg( rect );

-    Subtract( reg );
-    return TRUE;
+    return Subtract( reg );

 }
 
 bool wxRegion::Subtract( const wxRegion& region )
 {
 }
 
 bool wxRegion::Subtract( const wxRegion& region )
 {

+    if (region.IsNull())
+        return FALSE;
+
+    if (!m_refData)
+    {
+        m_refData = new wxRegionRefData();
+        M_REGIONDATA->m_region = gdk_region_new();
+    }
+
+    Unshare();
+
+#ifdef __WXGTK20__
+    gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
+#else

     GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;
     GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
     gdk_region_destroy( M_REGIONDATA->m_region );
     M_REGIONDATA->m_region = reg;

+#endif
+

     return TRUE;
 }
 
     return TRUE;
 }
 

-bool wxRegion::Xor( long x, long y, long width, long height )
+bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )

 {
     wxRegion reg( x, y, width, height );
 {
     wxRegion reg( x, y, width, height );

-    Xor( reg );
-    return TRUE;
+    return Xor( reg );

 }
 
 bool wxRegion::Xor( const wxRect& rect )
 {
     wxRegion reg( rect );
 }
 
 bool wxRegion::Xor( const wxRect& rect )
 {
     wxRegion reg( rect );

-    Xor( reg );
-    return TRUE;
+    return Xor( reg );

 }
 
 bool wxRegion::Xor( const wxRegion& region )
 {
 }
 
 bool wxRegion::Xor( const wxRegion& region )
 {

+    if (region.IsNull())
+        return FALSE;
+
+    if (!m_refData)
+    {
+        m_refData = new wxRegionRefData();
+        M_REGIONDATA->m_region = gdk_region_new();
+    }
+    else
+    {
+        Unshare();
+    }
+
+#ifdef __WXGTK20__
+    gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
+#else

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

-  
+#endif
+
+#if OLDCODE

     wxNode *node = region.GetRectList()->First();
     while (node)
     {
     wxNode *node = region.GetRectList()->First();
     while (node)
     {


@@ -256,77 +456,66 @@ bool wxRegion::Xor( const wxRegion& region )
         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
         node = node->Next();
     }
         M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
         node = node->Next();
     }

-  
+#endif
+

     return TRUE;
 }
 
     return TRUE;
 }
 

-void wxRegion::GetBox( long& x, long& y, long&w, long &h ) const
+// ----------------------------------------------------------------------------
+// wxRegion tests
+// ----------------------------------------------------------------------------
+
+void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const

 {
 {

-    x = 0;
-    y = 0;
-    w = -1;
-    h = -1;
-    wxNode *node = GetRectList()->First();
-    while (node)
+    if ( m_refData )

     {
     {

-        wxRect *r = (wxRect*)node->Data();
-        if (node == GetRectList()->First())
-        {
-            x = r->x;
-            y = r->y;
-            w = r->width;
-            h = r->height;
-        }
-        else
-        {
-            if (r->x < x)
-            {
-                x = r->x;
-                w += x - r->x;
-            }
-            if (r->y < y) 
-            {
-                y = r->y;
-                h += y - r->y;
-            }
-            if (r->width+r->x > x+w) 
-            {
-                w = r->x + r->width - x;
-            }
-            if (r->height+r->y > y+h) 
-            {
-                h = r->y + r->height - y;
-            }
-        }
-        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;
+    }
+    else
+    {
+        x = 0;
+        y = 0;
+        w = -1;
+        h = -1;

     }
 }
 
 wxRect wxRegion::GetBox() const
 {
     }
 }
 
 wxRect wxRegion::GetBox() const
 {

-    long x = 0;
-    long y = 0;
-    long w = -1;
-    long h = -1;
+    wxCoord x, y, w, h;

     GetBox( x, y, w, h );
     return wxRect( x, y, w, h );
 }
 
 bool wxRegion::Empty() const
 {
     GetBox( x, y, w, h );
     return wxRect( x, y, w, h );
 }
 
 bool wxRegion::Empty() const
 {

+    if (!m_refData)
+        return TRUE;
+

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

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

 {
 {

+    if (!m_refData)
+        return wxOutRegion;
+

     if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
         return wxInRegion;
     else
         return wxOutRegion;
 }
 
     if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
         return wxInRegion;
     else
         return wxOutRegion;
 }
 

-wxRegionContain wxRegion::Contains( long x, long y, long w, long h ) const
+wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const

 {
 {

+    if (!m_refData)
+        return wxOutRegion;
+

     GdkRectangle rect;
     rect.x = x;
     rect.y = y;
     GdkRectangle rect;
     rect.x = x;
     rect.y = y;


@@ -354,55 +543,64 @@ wxRegionContain wxRegion::Contains(const wxRect& rect) const
 
 GdkRegion *wxRegion::GetRegion() const
 {
 
 GdkRegion *wxRegion::GetRegion() const
 {

+    if (!m_refData)
+        return (GdkRegion*) NULL;
+

     return M_REGIONDATA->m_region;
 }
 
 wxList *wxRegion::GetRectList() const
 {
     return M_REGIONDATA->m_region;
 }
 
 wxList *wxRegion::GetRectList() const
 {

+#if OLDCODE
+    if (!m_refData)
+        return (wxList*) NULL;
+

     return &(M_REGIONDATA->m_rects);
     return &(M_REGIONDATA->m_rects);

+#else
+    return (wxList*) NULL;
+#endif

 }
 
 }
 

-//-----------------------------------------------------------------------------
-// wxRegion
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// wxRegionIterator
+// ----------------------------------------------------------------------------
+
+#if OLDCODE

 
 

-IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
-  

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

-    m_current = 0;
+    Reset();

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

-    m_region = region;
-    m_current = 0;
+    Reset(region);

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

-    m_current = 0;
+    Reset();

 }
 
 }
 

-wxRegionIterator::operator bool () const 
-{ 
-    return m_current < m_region.GetRectList()->Number(); 
+wxRegionIterator::operator bool () const
+{
+    return m_region.GetRectList() && m_current < (size_t)m_region.GetRectList()->Number();

 }
 
 }
 

-bool wxRegionIterator::HaveRects() const 
-{ 
-    return m_current < m_region.GetRectList()->Number(); 
+bool wxRegionIterator::HaveRects() const
+{
+    return m_region.GetRectList() && m_current < (size_t)m_region.GetRectList()->Number();

 }
 
 void wxRegionIterator::operator ++ ()
 {
 }
 
 void wxRegionIterator::operator ++ ()
 {

-    if (m_current < m_region.GetRectList()->Number()) ++m_current;
+    if (HaveRects()) ++m_current;

 }
 
 void wxRegionIterator::operator ++ (int)
 {
 }
 
 void wxRegionIterator::operator ++ (int)
 {

-    if (m_current < m_region.GetRectList()->Number()) ++m_current;
+    if (HaveRects()) ++m_current;

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


@@ -437,4 +635,142 @@ wxCoord wxRegionIterator::GetH() const
     return r->height;
 }
 
     return r->height;
 }
 

+#else
+
+// 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
+
+struct _XBox {
+    short x1, x2, y1, y2;
+};
+
+struct _XRegion {
+    long   size , numRects;
+    _XBox *rects, extents;
+};
+
+class wxRIRefData: public wxObjectRefData
+{
+public:
+
+    wxRIRefData() : m_rects(0), m_numRects(0){}
+   ~wxRIRefData();
+
+    wxRect *m_rects;
+    size_t  m_numRects;
+
+    void CreateRects( const wxRegion& r );
+};
+
+wxRIRefData::~wxRIRefData()
+{
+    delete m_rects;
+}
+
+#include <gdk/gdkprivate.h>
+
+void wxRIRefData::CreateRects( const wxRegion& region )
+{
+  if( m_rects )
+    delete m_rects;
+  m_rects   = 0;
+  m_numRects= 0;
+  GdkRegion *gdkregion= region.GetRegion();
+  if( gdkregion ){
+    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;
+        }
+      }
+    }
+  }
+}
+
+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::operator bool () const
+{
+    return HaveRects();
+}
+
+void wxRegionIterator::operator ++ ()
+{
+    if (HaveRects()) ++m_current;
+}
+
+void wxRegionIterator::operator ++ (int)
+{
+    if (HaveRects()) ++m_current;
+}
+
+wxCoord wxRegionIterator::GetX() const
+{
+    if( !HaveRects() ) return 0;
+    return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
+}
+
+wxCoord wxRegionIterator::GetY() const
+{
+    if( !HaveRects() ) return 0;
+    return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
+}
+
+wxCoord wxRegionIterator::GetW() const
+{
+    if( !HaveRects() ) return -1;
+    return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
+}
+
+wxCoord wxRegionIterator::GetH() const
+{
+    if( !HaveRects() ) return -1;
+    return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
+}
+
+wxRect wxRegionIterator::GetRect() const
+{
+    wxRect r;
+    if( HaveRects() )
+        r = ((wxRIRefData*)m_refData)->m_rects[m_current];
+
+    return r;
+}
+
+#endif