src/gtk/region.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        gtk/region.cpp
// Purpose:
// Author:      Robert Roebling
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "region.h"
#endif

#include "wx/region.h"

#include <gdk/gdk.h>
#include <gtk/gtk.h>


//-----------------------------------------------------------------------------
// wxRegion
//-----------------------------------------------------------------------------

class wxRegionRefData: public wxObjectRefData
{
public:
    wxRegionRefData();
    ~wxRegionRefData();

    GdkRegion  *m_region;
    wxList      m_rects;
};

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

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

    wxNode *node = m_rects.First();
    while (node)
    {
        wxRect *r = (wxRect*)node->Data();
        delete r;
        node = node->Next();
    }
}

//-----------------------------------------------------------------------------

#define M_REGIONDATA ((wxRegionRefData *)m_refData)

IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);

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

wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
{
    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;
#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
    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
}

wxRegion::wxRegion( const wxRect& rect )
{
    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;
#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 );
#endif
    M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
}

wxRegion::wxRegion()
{
}

wxRegion::~wxRegion()
{
}

bool wxRegion::operator == ( const wxRegion& region )
{
    return m_refData == region.m_refData;
}

bool wxRegion::operator != ( const wxRegion& region )
{
    return m_refData != region.m_refData;
}

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

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;
    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
    {
#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
    }

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

    return TRUE;
}

bool wxRegion::Union( const wxRect& rect )
{
    return Union( rect.x, rect.y, rect.width, rect.height );
}

bool wxRegion::Union( const wxRegion& region )
{
    if (region.IsNull())
        return FALSE;

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

#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;
#endif

    wxNode *node = region.GetRectList()->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();
    }

    return TRUE;
}

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;
}

bool wxRegion::Intersect( const wxRect& rect )
{
    if (!m_refData)
    {
        m_refData = new wxRegionRefData();
        M_REGIONDATA->m_region = gdk_region_new();
    }

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

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

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

#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;
#endif
    return TRUE;
}

bool wxRegion::Subtract( 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 );
    Subtract( reg );
    return TRUE;
}

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

    wxRegion reg( rect );
    Subtract( reg );
    return TRUE;
}

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();
    }

#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;
#endif
    return TRUE;
}

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();
    }

    wxRegion reg( x, y, width, height );
    Xor( reg );
    return TRUE;
}

bool wxRegion::Xor( const wxRect& rect )
{
    if (!m_refData)
    {
        m_refData = new wxRegionRefData();
        M_REGIONDATA->m_region = gdk_region_new();
    }

    wxRegion reg( rect );
    Xor( reg );
    return TRUE;
}

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();
    }

#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;
#endif

    wxNode *node = region.GetRectList()->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();
    }

    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 );
}

bool wxRegion::Empty() const
{
    if (!m_refData)
        return TRUE;

    return gdk_region_empty( M_REGIONDATA->m_region );
}

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;
}

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;
    rect.width = w;
    rect.height = h;
    GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
    switch (res)
    {
        case GDK_OVERLAP_RECTANGLE_IN:   return wxInRegion;
        case GDK_OVERLAP_RECTANGLE_OUT:  return wxOutRegion;
        case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
    }
    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)
        return (GdkRegion*) NULL;

    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()
{
    Reset();
}

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

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

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

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

void wxRegionIterator::operator ++ ()
{
    if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
}

void wxRegionIterator::operator ++ (int)
{
    if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
}

wxCoord wxRegionIterator::GetX() const
{
    wxNode *node = m_region.GetRectList()->Nth( m_current );
    if (!node) return 0;
    wxRect *r = (wxRect*)node->Data();
    return r->x;
}

wxCoord wxRegionIterator::GetY() const
{
    wxNode *node = m_region.GetRectList()->Nth( m_current );
    if (!node) return 0;
    wxRect *r = (wxRect*)node->Data();
    return r->y;
}

wxCoord wxRegionIterator::GetW() const
{
    wxNode *node = m_region.GetRectList()->Nth( m_current );
    if (!node) return 0;
    wxRect *r = (wxRect*)node->Data();
    return r->width;
}

wxCoord wxRegionIterator::GetH() const
{
    wxNode *node = m_region.GetRectList()->Nth( m_current );
    if (!node) return 0;
    wxRect *r = (wxRect*)node->Data();
    return r->height;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: gtk/region.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifdef __GNUG__
	11	#pragma implementation "region.h"
	12	#endif
	13
	14	#include "wx/region.h"
	15
	16	#include <gdk/gdk.h>
	17	#include <gtk/gtk.h>
	18
	19
	20	//-----------------------------------------------------------------------------
	21	// wxRegion
	22	//-----------------------------------------------------------------------------
	23
	24	class wxRegionRefData: public wxObjectRefData
	25	{
	26	public:
	27	wxRegionRefData();
	28	~wxRegionRefData();
	29
	30	GdkRegion *m_region;
	31	wxList m_rects;
	32	};
	33
	34	wxRegionRefData::wxRegionRefData()
	35	{
	36	m_region = (GdkRegion *) NULL;
	37	}
	38
	39	wxRegionRefData::~wxRegionRefData()
	40	{
	41	if (m_region) gdk_region_destroy( m_region );
	42
	43	wxNode *node = m_rects.First();
	44	while (node)
	45	{
	46	wxRect r = (wxRect)node->Data();
	47	delete r;
	48	node = node->Next();
	49	}
	50	}
	51
	52	//-----------------------------------------------------------------------------
	53
	54	#define M_REGIONDATA ((wxRegionRefData *)m_refData)
	55
	56	IMPLEMENT_DYNAMIC_CLASS(wxRegion,wxGDIObject);
	57
	58	wxRegion::wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
	59	{
	60	m_refData = new wxRegionRefData();
	61	GdkRegion *reg = gdk_region_new();
	62	GdkRectangle rect;
	63	rect.x = x;
	64	rect.y = y;
	65	rect.width = w;
	66	rect.height = h;
	67	#ifdef __WXGTK20__
	68	gdk_region_union_with_rect( reg, &rect );
	69	M_REGIONDATA->m_region = reg;
	70	#else
	71	M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
	72	gdk_region_destroy( reg );
	73	#endif
	74	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,w,h) );
	75	}
	76
	77	wxRegion::wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
	78	{
	79	m_refData = new wxRegionRefData();
	80	GdkRegion *reg = gdk_region_new();
	81	GdkRectangle rect;
	82	rect.x = topLeft.x;
	83	rect.y = topLeft.y;
	84	rect.width = bottomRight.x - rect.x;
	85	rect.height = bottomRight.y - rect.y;
	86	#ifdef __WXGTK20__
	87	gdk_region_union_with_rect( reg, &rect );
	88	M_REGIONDATA->m_region = reg;
	89	#else
	90	M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
	91	gdk_region_destroy( reg );
	92	#endif
	93	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(topLeft,bottomRight) );
	94	}
	95
	96	wxRegion::wxRegion( const wxRect& rect )
	97	{
	98	m_refData = new wxRegionRefData();
	99	GdkRegion *reg = gdk_region_new();
	100	GdkRectangle g_rect;
	101	g_rect.x = rect.x;
	102	g_rect.y = rect.y;
	103	g_rect.width = rect.width;
	104	g_rect.height = rect.height;
	105	#ifdef __WXGTK20__
	106	gdk_region_union_with_rect( reg, &g_rect );
	107	M_REGIONDATA->m_region = reg;
	108	#else
	109	M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &g_rect );
	110	gdk_region_destroy( reg );
	111	#endif
	112	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(rect.x,rect.y,rect.width,rect.height) );
	113	}
	114
	115	wxRegion::wxRegion()
	116	{
	117	}
	118
	119	wxRegion::~wxRegion()
	120	{
	121	}
	122
	123	bool wxRegion::operator == ( const wxRegion& region )
	124	{
	125	return m_refData == region.m_refData;
	126	}
	127
	128	bool wxRegion::operator != ( const wxRegion& region )
	129	{
	130	return m_refData != region.m_refData;
	131	}
	132
	133	void wxRegion::Clear()
	134	{
	135	UnRef();
	136	}
	137
	138	bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	139	{
	140	GdkRectangle rect;
	141	rect.x = x;
	142	rect.y = y;
	143	rect.width = width;
	144	rect.height = height;
	145	if (!m_refData)
	146	{
	147	m_refData = new wxRegionRefData();
	148	GdkRegion *reg = gdk_region_new();
	149	#ifdef __WXGTK20__
	150	gdk_region_union_with_rect( reg, &rect );
	151	M_REGIONDATA->m_region = reg;
	152	#else
	153	M_REGIONDATA->m_region = gdk_region_union_with_rect( reg, &rect );
	154	gdk_region_destroy( reg );
	155	#endif
	156	}
	157	else
	158	{
	159	#ifdef __WXGTK20__
	160	gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
	161	#else
	162	GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
	163	gdk_region_destroy( M_REGIONDATA->m_region );
	164	M_REGIONDATA->m_region = reg;
	165	#endif
	166	}
	167
	168	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(x,y,width,height) );
	169
	170	return TRUE;
	171	}
	172
	173	bool wxRegion::Union( const wxRect& rect )
	174	{
	175	return Union( rect.x, rect.y, rect.width, rect.height );
	176	}
	177
	178	bool wxRegion::Union( const wxRegion& region )
	179	{
	180	if (region.IsNull())
	181	return FALSE;
	182
	183	if (!m_refData)
	184	{
	185	m_refData = new wxRegionRefData();
	186	M_REGIONDATA->m_region = gdk_region_new();
	187	}
	188
	189	#ifdef __WXGTK20__
	190	gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
	191	#else
	192	GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
	193	gdk_region_destroy( M_REGIONDATA->m_region );
	194	M_REGIONDATA->m_region = reg;
	195	#endif
	196
	197	wxNode *node = region.GetRectList()->First();
	198	while (node)
	199	{
	200	wxRect r = (wxRect)node->Data();
	201	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
	202	node = node->Next();
	203	}
	204
	205	return TRUE;
	206	}
	207
	208	bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	209	{
	210	if (!m_refData)
	211	{
	212	m_refData = new wxRegionRefData();
	213	M_REGIONDATA->m_region = gdk_region_new();
	214	}
	215
	216	wxRegion reg( x, y, width, height );
	217	Intersect( reg );
	218	return TRUE;
	219	}
	220
	221	bool wxRegion::Intersect( const wxRect& rect )
	222	{
	223	if (!m_refData)
	224	{
	225	m_refData = new wxRegionRefData();
	226	M_REGIONDATA->m_region = gdk_region_new();
	227	}
	228
	229	wxRegion reg( rect );
	230	Intersect( reg );
	231	return TRUE;
	232	}
	233
	234	bool wxRegion::Intersect( const wxRegion& region )
	235	{
	236	if (region.IsNull())
	237	return FALSE;
	238
	239	if (!m_refData)
	240	{
	241	m_refData = new wxRegionRefData();
	242	M_REGIONDATA->m_region = gdk_region_new();
	243	return TRUE;
	244	}
	245
	246	#ifdef __WXGTK20__
	247	gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
	248	#else
	249	GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
	250	gdk_region_destroy( M_REGIONDATA->m_region );
	251	M_REGIONDATA->m_region = reg;
	252	#endif
	253	return TRUE;
	254	}
	255
	256	bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	257	{
	258	if (!m_refData)
	259	{
	260	m_refData = new wxRegionRefData();
	261	M_REGIONDATA->m_region = gdk_region_new();
	262	}
	263
	264	wxRegion reg( x, y, width, height );
	265	Subtract( reg );
	266	return TRUE;
	267	}
	268
	269	bool wxRegion::Subtract( const wxRect& rect )
	270	{
	271	if (!m_refData)
	272	{
	273	m_refData = new wxRegionRefData();
	274	M_REGIONDATA->m_region = gdk_region_new();
	275	}
	276
	277	wxRegion reg( rect );
	278	Subtract( reg );
	279	return TRUE;
	280	}
	281
	282	bool wxRegion::Subtract( const wxRegion& region )
	283	{
	284	if (region.IsNull())
	285	return FALSE;
	286
	287	if (!m_refData)
	288	{
	289	m_refData = new wxRegionRefData();
	290	M_REGIONDATA->m_region = gdk_region_new();
	291	}
	292
	293	#ifdef __WXGTK20__
	294	gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
	295	#else
	296	GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
	297	gdk_region_destroy( M_REGIONDATA->m_region );
	298	M_REGIONDATA->m_region = reg;
	299	#endif
	300	return TRUE;
	301	}
	302
	303	bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	304	{
	305	if (!m_refData)
	306	{
	307	m_refData = new wxRegionRefData();
	308	M_REGIONDATA->m_region = gdk_region_new();
	309	}
	310
	311	wxRegion reg( x, y, width, height );
	312	Xor( reg );
	313	return TRUE;
	314	}
	315
	316	bool wxRegion::Xor( const wxRect& rect )
	317	{
	318	if (!m_refData)
	319	{
	320	m_refData = new wxRegionRefData();
	321	M_REGIONDATA->m_region = gdk_region_new();
	322	}
	323
	324	wxRegion reg( rect );
	325	Xor( reg );
	326	return TRUE;
	327	}
	328
	329	bool wxRegion::Xor( const wxRegion& region )
	330	{
	331	if (region.IsNull())
	332	return FALSE;
	333
	334	if (!m_refData)
	335	{
	336	m_refData = new wxRegionRefData();
	337	M_REGIONDATA->m_region = gdk_region_new();
	338	}
	339
	340	#ifdef __WXGTK20__
	341	gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
	342	#else
	343	GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
	344	gdk_region_destroy( M_REGIONDATA->m_region );
	345	M_REGIONDATA->m_region = reg;
	346	#endif
	347
	348	wxNode *node = region.GetRectList()->First();
	349	while (node)
	350	{
	351	wxRect r = (wxRect)node->Data();
	352	M_REGIONDATA->m_rects.Append( (wxObject*) new wxRect(r->x,r->y,r->width,r->height) );
	353	node = node->Next();
	354	}
	355
	356	return TRUE;
	357	}
	358
	359	void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
	360	{
	361	x = 0;
	362	y = 0;
	363	w = -1;
	364	h = -1;
	365	if (!m_refData)
	366	return;
	367
	368	GdkRectangle rect;
	369	gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
	370	x = rect.x;
	371	y = rect.y;
	372	w = rect.width;
	373	h = rect.height;
	374	}
	375
	376	wxRect wxRegion::GetBox() const
	377	{
	378	wxCoord x = 0;
	379	wxCoord y = 0;
	380	wxCoord w = -1;
	381	wxCoord h = -1;
	382	GetBox( x, y, w, h );
	383	return wxRect( x, y, w, h );
	384	}
	385
	386	bool wxRegion::Empty() const
	387	{
	388	if (!m_refData)
	389	return TRUE;
	390
	391	return gdk_region_empty( M_REGIONDATA->m_region );
	392	}
	393
	394	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y ) const
	395	{
	396	if (!m_refData)
	397	return wxOutRegion;
	398
	399	if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
	400	return wxInRegion;
	401	else
	402	return wxOutRegion;
	403	}
	404
	405	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const
	406	{
	407	if (!m_refData)
	408	return wxOutRegion;
	409
	410	GdkRectangle rect;
	411	rect.x = x;
	412	rect.y = y;
	413	rect.width = w;
	414	rect.height = h;
	415	GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
	416	switch (res)
	417	{
	418	case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
	419	case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
	420	case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
	421	}
	422	return wxOutRegion;
	423	}
	424
	425	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	426	{
	427	return Contains( pt.x, pt.y );
	428	}
	429
	430	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	431	{
	432	return Contains( rect.x, rect.y, rect.width, rect.height );
	433	}
	434
	435	GdkRegion *wxRegion::GetRegion() const
	436	{
	437	if (!m_refData)
	438	return (GdkRegion*) NULL;
	439
	440	return M_REGIONDATA->m_region;
	441	}
	442
	443	wxList *wxRegion::GetRectList() const
	444	{
	445	if (!m_refData)
	446	return (wxList*) NULL;
	447
	448	return &(M_REGIONDATA->m_rects);
	449	}
	450
	451	//-----------------------------------------------------------------------------
	452	// wxRegion
	453	//-----------------------------------------------------------------------------
	454
	455	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject);
	456
	457	wxRegionIterator::wxRegionIterator()
	458	{
	459	Reset();
	460	}
	461
	462	wxRegionIterator::wxRegionIterator( const wxRegion& region )
	463	{
	464	Reset(region);
	465	}
	466
	467	void wxRegionIterator::Reset( const wxRegion& region )
	468	{
	469	m_region = region;
	470	Reset();
	471	}
	472
	473	wxRegionIterator::operator bool () const
	474	{
	475	return m_current < (size_t)m_region.GetRectList()->Number();
	476	}
	477
	478	bool wxRegionIterator::HaveRects() const
	479	{
	480	return m_current < (size_t)m_region.GetRectList()->Number();
	481	}
	482
	483	void wxRegionIterator::operator ++ ()
	484	{
	485	if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
	486	}
	487
	488	void wxRegionIterator::operator ++ (int)
	489	{
	490	if (m_current < (size_t)m_region.GetRectList()->Number()) ++m_current;
	491	}
	492
	493	wxCoord wxRegionIterator::GetX() const
	494	{
	495	wxNode *node = m_region.GetRectList()->Nth( m_current );
	496	if (!node) return 0;
	497	wxRect r = (wxRect)node->Data();
	498	return r->x;
	499	}
	500
	501	wxCoord wxRegionIterator::GetY() const
	502	{
	503	wxNode *node = m_region.GetRectList()->Nth( m_current );
	504	if (!node) return 0;
	505	wxRect r = (wxRect)node->Data();
	506	return r->y;
	507	}
	508
	509	wxCoord wxRegionIterator::GetW() const
	510	{
	511	wxNode *node = m_region.GetRectList()->Nth( m_current );
	512	if (!node) return 0;
	513	wxRect r = (wxRect)node->Data();
	514	return r->width;
	515	}
	516
	517	wxCoord wxRegionIterator::GetH() const
	518	{
	519	wxNode *node = m_region.GetRectList()->Nth( m_current );
	520	if (!node) return 0;
	521	wxRect r = (wxRect)node->Data();
	522	return r->height;
	523	}
	524
	525