src/gtk1/region.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        gtk/region.cpp
// Purpose:
// Author:      Robert Roebling
// Modified:    VZ at 05.10.00: use AllocExclusive(), comparison fixed
// Id:          $Id$
// Copyright:   (c) 1998 Robert Roebling
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

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

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#include "wx/log.h"

#include "wx/region.h"

#include "wx/gtk/private.h"

#ifndef __WXGTK20__

// ----------------------------------------------------------------------------
// wxGdkRegion: creates a new region in ctor and destroys in dtor
// ----------------------------------------------------------------------------

class wxGdkRegion
{
public:
    wxGdkRegion() { m_region = gdk_region_new(); }
    ~wxGdkRegion() { gdk_region_destroy(m_region); }

    operator GdkRegion *() const { return m_region; }

private:
    GdkRegion *m_region;
};

#endif // __WXGTK20__

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

class wxRegionRefData : public wxObjectRefData
{
public:
    wxRegionRefData()
    {
        m_region = NULL;
    }

    wxRegionRefData(const wxRegionRefData& refData)
        : wxObjectRefData()
    {
#ifdef __WXGTK20__
        m_region = gdk_region_copy(refData.m_region);
#else
        m_region = gdk_regions_union(wxGdkRegion(), refData.m_region);
#endif
    }

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

    GdkRegion  *m_region;
};

// ----------------------------------------------------------------------------
// 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)

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

#define M_REGIONDATA ((wxRegionRefData *)m_refData)

void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
{
    GdkRectangle rect;
    rect.x = x;
    rect.y = y;
    rect.width = w;
    rect.height = h;

    m_refData = new wxRegionRefData();

#ifdef __WXGTK20__
    M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
#else
    M_REGIONDATA->m_region = gdk_region_union_with_rect( wxGdkRegion(), &rect );
#endif
}

wxRegion::wxRegion( GdkRegion *region )
{
    m_refData = new wxRegionRefData();
#ifdef __WXGTK20__
    M_REGIONDATA->m_region = gdk_region_copy( region );
#else
    M_REGIONDATA->m_region = gdk_regions_union(wxGdkRegion(), region);
#endif
}

wxRegion::wxRegion( size_t n, const wxPoint *points, int 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();

    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()
{
    // m_refData unrefed in ~wxObject
}

wxObjectRefData *wxRegion::CreateRefData() const
{
    return new wxRegionRefData;
}

wxObjectRefData *wxRegion::CloneRefData(const wxObjectRefData *data) const
{
    return new wxRegionRefData(*(wxRegionRefData *)data);
}

// ----------------------------------------------------------------------------
// wxRegion comparison
// ----------------------------------------------------------------------------

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

    if (!m_refData || !region.m_refData) return FALSE;

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

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

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();
#ifdef __WXGTK20__
        M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
#else
        M_REGIONDATA->m_region = gdk_region_union_with_rect(wxGdkRegion(), &rect);
#endif
    }
    else
    {
        AllocExclusive();

#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
    }

    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();
    }
    else
    {
        AllocExclusive();
    }

#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

    return TRUE;
}

bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
{
    wxRegion reg( x, y, width, height );

    return Intersect( reg );
}

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

    return Intersect( reg );
}

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();

        // leave here
        return TRUE;
    }
    else
    {
        AllocExclusive();
    }

#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 )
{
    wxRegion reg( x, y, width, height );
    return Subtract( reg );
}

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

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();
    }
    else
    {
        AllocExclusive();
    }

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

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

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
    {
        AllocExclusive();
    }

#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

    return TRUE;
}

// ----------------------------------------------------------------------------
// wxRegion tests
// ----------------------------------------------------------------------------

void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
{
    if ( m_refData )
    {
        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
{
    wxCoord x, y, w, h;
    GetBox( x, y, w, h );
    return wxRect( x, y, w, h );
}

bool wxRegion::Offset( wxCoord x, wxCoord y )
{
    if (!m_refData)
        return FALSE;

    AllocExclusive();

    gdk_region_offset( M_REGIONDATA->m_region, x, y );

    return TRUE;
}

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;
}

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

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::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;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: gtk/region.cpp
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Modified: VZ at 05.10.00: use AllocExclusive(), comparison fixed
	6	// Id: $Id$
	7	// Copyright: (c) 1998 Robert Roebling
	8	// Licence: wxWindows licence
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	// ============================================================================
	12	// declarations
	13	// ============================================================================
	14
	15	#ifdef __GNUG__
	16	#pragma implementation "region.h"
	17	#endif
	18
	19	// ----------------------------------------------------------------------------
	20	// headers
	21	// ----------------------------------------------------------------------------
	22
	23	#include "wx/log.h"
	24
	25	#include "wx/region.h"
	26
	27	#include "wx/gtk/private.h"
	28
	29	#ifndef __WXGTK20__
	30
	31	// ----------------------------------------------------------------------------
	32	// wxGdkRegion: creates a new region in ctor and destroys in dtor
	33	// ----------------------------------------------------------------------------
	34
	35	class wxGdkRegion
	36	{
	37	public:
	38	wxGdkRegion() { m_region = gdk_region_new(); }
	39	~wxGdkRegion() { gdk_region_destroy(m_region); }
	40
	41	operator GdkRegion *() const { return m_region; }
	42
	43	private:
	44	GdkRegion *m_region;
	45	};
	46
	47	#endif // __WXGTK20__
	48
	49	// ----------------------------------------------------------------------------
	50	// wxRegionRefData: private class containing the information about the region
	51	// ----------------------------------------------------------------------------
	52
	53	class wxRegionRefData : public wxObjectRefData
	54	{
	55	public:
	56	wxRegionRefData()
	57	{
	58	m_region = NULL;
	59	}
	60
	61	wxRegionRefData(const wxRegionRefData& refData)
	62	: wxObjectRefData()
	63	{
	64	#ifdef __WXGTK20__
	65	m_region = gdk_region_copy(refData.m_region);
	66	#else
	67	m_region = gdk_regions_union(wxGdkRegion(), refData.m_region);
	68	#endif
	69	}
	70
	71	~wxRegionRefData()
	72	{
	73	if (m_region)
	74	gdk_region_destroy( m_region );
	75	}
	76
	77	GdkRegion *m_region;
	78	};
	79
	80	// ----------------------------------------------------------------------------
	81	// macros
	82	// ----------------------------------------------------------------------------
	83
	84	#define M_REGIONDATA ((wxRegionRefData *)m_refData)
	85	#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
	86
	87	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	88	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)
	89
	90	// ----------------------------------------------------------------------------
	91	// wxRegion construction
	92	// ----------------------------------------------------------------------------
	93
	94	#define M_REGIONDATA ((wxRegionRefData *)m_refData)
	95
	96	void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
	97	{
	98	GdkRectangle rect;
	99	rect.x = x;
	100	rect.y = y;
	101	rect.width = w;
	102	rect.height = h;
	103
	104	m_refData = new wxRegionRefData();
	105
	106	#ifdef __WXGTK20__
	107	M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
	108	#else
	109	M_REGIONDATA->m_region = gdk_region_union_with_rect( wxGdkRegion(), &rect );
	110	#endif
	111	}
	112
	113	wxRegion::wxRegion( GdkRegion *region )
	114	{
	115	m_refData = new wxRegionRefData();
	116	#ifdef __WXGTK20__
	117	M_REGIONDATA->m_region = gdk_region_copy( region );
	118	#else
	119	M_REGIONDATA->m_region = gdk_regions_union(wxGdkRegion(), region);
	120	#endif
	121	}
	122
	123	wxRegion::wxRegion( size_t n, const wxPoint *points, int fillStyle )
	124	{
	125	GdkPoint *gdkpoints = new GdkPoint[n];
	126	for ( size_t i = 0 ; i < n ; i++ )
	127	{
	128	gdkpoints[i].x = points[i].x;
	129	gdkpoints[i].y = points[i].y;
	130	}
	131
	132	m_refData = new wxRegionRefData();
	133
	134	GdkRegion* reg = gdk_region_polygon
	135	(
	136	gdkpoints,
	137	n,
	138	fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
	139	: GDK_EVEN_ODD_RULE
	140	);
	141
	142	M_REGIONDATA->m_region = reg;
	143
	144	delete [] gdkpoints;
	145	}
	146
	147	wxRegion::~wxRegion()
	148	{
	149	// m_refData unrefed in ~wxObject
	150	}
	151
	152	wxObjectRefData *wxRegion::CreateRefData() const
	153	{
	154	return new wxRegionRefData;
	155	}
	156
	157	wxObjectRefData wxRegion::CloneRefData(const wxObjectRefData data) const
	158	{
	159	return new wxRegionRefData((wxRegionRefData )data);
	160	}
	161
	162	// ----------------------------------------------------------------------------
	163	// wxRegion comparison
	164	// ----------------------------------------------------------------------------
	165
	166	bool wxRegion::operator==( const wxRegion& region )
	167	{
	168	if (m_refData == region.m_refData) return TRUE;
	169
	170	if (!m_refData \|\| !region.m_refData) return FALSE;
	171
	172	// compare the regions themselves, not the pointers to ref data!
	173	return gdk_region_equal(M_REGIONDATA->m_region,
	174	M_REGIONDATA_OF(region)->m_region);
	175	}
	176
	177	// ----------------------------------------------------------------------------
	178	// wxRegion operations
	179	// ----------------------------------------------------------------------------
	180
	181	void wxRegion::Clear()
	182	{
	183	UnRef();
	184	}
	185
	186	bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	187	{
	188	GdkRectangle rect;
	189	rect.x = x;
	190	rect.y = y;
	191	rect.width = width;
	192	rect.height = height;
	193
	194	if (!m_refData)
	195	{
	196	m_refData = new wxRegionRefData();
	197	#ifdef __WXGTK20__
	198	M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
	199	#else
	200	M_REGIONDATA->m_region = gdk_region_union_with_rect(wxGdkRegion(), &rect);
	201	#endif
	202	}
	203	else
	204	{
	205	AllocExclusive();
	206
	207	#ifdef __WXGTK20__
	208	gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
	209	#else
	210	GdkRegion *reg = gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
	211	gdk_region_destroy( M_REGIONDATA->m_region );
	212	M_REGIONDATA->m_region = reg;
	213	#endif
	214	}
	215
	216	return TRUE;
	217	}
	218
	219	bool wxRegion::Union( const wxRect& rect )
	220	{
	221	return Union( rect.x, rect.y, rect.width, rect.height );
	222	}
	223
	224	bool wxRegion::Union( const wxRegion& region )
	225	{
	226	if (region.IsNull())
	227	return FALSE;
	228
	229	if (!m_refData)
	230	{
	231	m_refData = new wxRegionRefData();
	232	M_REGIONDATA->m_region = gdk_region_new();
	233	}
	234	else
	235	{
	236	AllocExclusive();
	237	}
	238
	239	#ifdef __WXGTK20__
	240	gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
	241	#else
	242	GdkRegion *reg = gdk_regions_union( M_REGIONDATA->m_region, region.GetRegion() );
	243	gdk_region_destroy( M_REGIONDATA->m_region );
	244	M_REGIONDATA->m_region = reg;
	245	#endif
	246
	247	return TRUE;
	248	}
	249
	250	bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	251	{
	252	wxRegion reg( x, y, width, height );
	253
	254	return Intersect( reg );
	255	}
	256
	257	bool wxRegion::Intersect( const wxRect& rect )
	258	{
	259	wxRegion reg( rect );
	260
	261	return Intersect( reg );
	262	}
	263
	264	bool wxRegion::Intersect( const wxRegion& region )
	265	{
	266	if (region.IsNull())
	267	return FALSE;
	268
	269	if (!m_refData)
	270	{
	271	m_refData = new wxRegionRefData();
	272	M_REGIONDATA->m_region = gdk_region_new();
	273
	274	// leave here
	275	return TRUE;
	276	}
	277	else
	278	{
	279	AllocExclusive();
	280	}
	281
	282	#ifdef __WXGTK20__
	283	gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
	284	#else
	285	GdkRegion *reg = gdk_regions_intersect( M_REGIONDATA->m_region, region.GetRegion() );
	286	gdk_region_destroy( M_REGIONDATA->m_region );
	287	M_REGIONDATA->m_region = reg;
	288	#endif
	289
	290	return TRUE;
	291	}
	292
	293	bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	294	{
	295	wxRegion reg( x, y, width, height );
	296	return Subtract( reg );
	297	}
	298
	299	bool wxRegion::Subtract( const wxRect& rect )
	300	{
	301	wxRegion reg( rect );
	302	return Subtract( reg );
	303	}
	304
	305	bool wxRegion::Subtract( const wxRegion& region )
	306	{
	307	if (region.IsNull())
	308	return FALSE;
	309
	310	if (!m_refData)
	311	{
	312	m_refData = new wxRegionRefData();
	313	M_REGIONDATA->m_region = gdk_region_new();
	314	}
	315	else
	316	{
	317	AllocExclusive();
	318	}
	319
	320	#ifdef __WXGTK20__
	321	gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
	322	#else
	323	GdkRegion *reg = gdk_regions_subtract( M_REGIONDATA->m_region, region.GetRegion() );
	324	gdk_region_destroy( M_REGIONDATA->m_region );
	325	M_REGIONDATA->m_region = reg;
	326	#endif
	327
	328	return TRUE;
	329	}
	330
	331	bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	332	{
	333	wxRegion reg( x, y, width, height );
	334	return Xor( reg );
	335	}
	336
	337	bool wxRegion::Xor( const wxRect& rect )
	338	{
	339	wxRegion reg( rect );
	340	return Xor( reg );
	341	}
	342
	343	bool wxRegion::Xor( const wxRegion& region )
	344	{
	345	if (region.IsNull())
	346	return FALSE;
	347
	348	if (!m_refData)
	349	{
	350	m_refData = new wxRegionRefData();
	351	M_REGIONDATA->m_region = gdk_region_new();
	352	}
	353	else
	354	{
	355	AllocExclusive();
	356	}
	357
	358	#ifdef __WXGTK20__
	359	gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
	360	#else
	361	GdkRegion *reg = gdk_regions_xor( M_REGIONDATA->m_region, region.GetRegion() );
	362	gdk_region_destroy( M_REGIONDATA->m_region );
	363	M_REGIONDATA->m_region = reg;
	364	#endif
	365
	366	return TRUE;
	367	}
	368
	369	// ----------------------------------------------------------------------------
	370	// wxRegion tests
	371	// ----------------------------------------------------------------------------
	372
	373	void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
	374	{
	375	if ( m_refData )
	376	{
	377	GdkRectangle rect;
	378	gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
	379	x = rect.x;
	380	y = rect.y;
	381	w = rect.width;
	382	h = rect.height;
	383	}
	384	else
	385	{
	386	x = 0;
	387	y = 0;
	388	w = -1;
	389	h = -1;
	390	}
	391	}
	392
	393	wxRect wxRegion::GetBox() const
	394	{
	395	wxCoord x, y, w, h;
	396	GetBox( x, y, w, h );
	397	return wxRect( x, y, w, h );
	398	}
	399
	400	bool wxRegion::Offset( wxCoord x, wxCoord y )
	401	{
	402	if (!m_refData)
	403	return FALSE;
	404
	405	AllocExclusive();
	406
	407	gdk_region_offset( M_REGIONDATA->m_region, x, y );
	408
	409	return TRUE;
	410	}
	411
	412	bool wxRegion::Empty() const
	413	{
	414	if (!m_refData)
	415	return TRUE;
	416
	417	return gdk_region_empty( M_REGIONDATA->m_region );
	418	}
	419
	420	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y ) const
	421	{
	422	if (!m_refData)
	423	return wxOutRegion;
	424
	425	if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
	426	return wxInRegion;
	427	else
	428	return wxOutRegion;
	429	}
	430
	431	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const
	432	{
	433	if (!m_refData)
	434	return wxOutRegion;
	435
	436	GdkRectangle rect;
	437	rect.x = x;
	438	rect.y = y;
	439	rect.width = w;
	440	rect.height = h;
	441	GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
	442	switch (res)
	443	{
	444	case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
	445	case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
	446	case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
	447	}
	448	return wxOutRegion;
	449	}
	450
	451	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	452	{
	453	return Contains( pt.x, pt.y );
	454	}
	455
	456	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	457	{
	458	return Contains( rect.x, rect.y, rect.width, rect.height );
	459	}
	460
	461	GdkRegion *wxRegion::GetRegion() const
	462	{
	463	if (!m_refData)
	464	return (GdkRegion*) NULL;
	465
	466	return M_REGIONDATA->m_region;
	467	}
	468
	469	// ----------------------------------------------------------------------------
	470	// wxRegionIterator
	471	// ----------------------------------------------------------------------------
	472
	473	#ifndef __WXGTK20__
	474
	475	// the following structures must match the private structures
	476	// in X11 region code ( xc/lib/X11/region.h )
	477
	478	// this makes the Region type transparent
	479	// and we have access to the region rectangles
	480
	481	#include <gdk/gdkprivate.h>
	482
	483	struct _XBox {
	484	short x1, x2, y1, y2;
	485	};
	486
	487	struct _XRegion {
	488	long size , numRects;
	489	_XBox *rects, extents;
	490	};
	491
	492	#endif
	493
	494	class wxRIRefData: public wxObjectRefData
	495	{
	496	public:
	497	wxRIRefData() { Init(); }
	498	virtual ~wxRIRefData();
	499
	500	void CreateRects( const wxRegion& r );
	501
	502	void Init() { m_rects = NULL; m_numRects = 0; }
	503
	504	wxRect *m_rects;
	505	size_t m_numRects;
	506	};
	507
	508	wxRIRefData::~wxRIRefData()
	509	{
	510	delete [] m_rects;
	511	}
	512
	513	void wxRIRefData::CreateRects( const wxRegion& region )
	514	{
	515	delete [] m_rects;
	516
	517	Init();
	518
	519	GdkRegion *gdkregion = region.GetRegion();
	520	if (!gdkregion)
	521	return;
	522
	523	#ifdef __WXGTK20__
	524	GdkRectangle *gdkrects = NULL;
	525	gint numRects = 0;
	526	gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
	527
	528	m_numRects = numRects;
	529	if (numRects)
	530	{
	531	m_rects = new wxRect[m_numRects];
	532	for (size_t i=0; i < m_numRects; ++i)
	533	{
	534	GdkRectangle &gr = gdkrects[i];
	535	wxRect &wr = m_rects[i];
	536	wr.x = gr.x;
	537	wr.y = gr.y;
	538	wr.width = gr.width;
	539	wr.height = gr.height;
	540	}
	541	}
	542	g_free( gdkrects );
	543	#else // GTK+ 1.x
	544	Region r = ((GdkRegionPrivate *)gdkregion)->xregion;
	545	if (r)
	546	{
	547	m_numRects = r->numRects;
	548	if (m_numRects)
	549	{
	550	m_rects = new wxRect[m_numRects];
	551	for (size_t i=0; i < m_numRects; ++i)
	552	{
	553	_XBox &xr = r->rects[i];
	554	wxRect &wr = m_rects[i];
	555	wr.x = xr.x1;
	556	wr.y = xr.y1;
	557	wr.width = xr.x2-xr.x1;
	558	wr.height = xr.y2-xr.y1;
	559	}
	560	}
	561	}
	562	#endif // GTK+ 2.0/1.x
	563	}
	564
	565	wxRegionIterator::wxRegionIterator()
	566	{
	567	m_refData = new wxRIRefData();
	568	Reset();
	569	}
	570
	571	wxRegionIterator::wxRegionIterator( const wxRegion& region )
	572	{
	573	m_refData = new wxRIRefData();
	574	Reset(region);
	575	}
	576
	577	void wxRegionIterator::Reset( const wxRegion& region )
	578	{
	579	m_region = region;
	580	((wxRIRefData*)m_refData)->CreateRects(region);
	581	Reset();
	582	}
	583
	584	bool wxRegionIterator::HaveRects() const
	585	{
	586	return m_current < ((wxRIRefData*)m_refData)->m_numRects;
	587	}
	588
	589	wxRegionIterator::operator bool () const
	590	{
	591	return HaveRects();
	592	}
	593
	594	void wxRegionIterator::operator ++ ()
	595	{
	596	if (HaveRects()) ++m_current;
	597	}
	598
	599	void wxRegionIterator::operator ++ (int)
	600	{
	601	if (HaveRects()) ++m_current;
	602	}
	603
	604	wxCoord wxRegionIterator::GetX() const
	605	{
	606	if( !HaveRects() ) return 0;
	607	return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
	608	}
	609
	610	wxCoord wxRegionIterator::GetY() const
	611	{
	612	if( !HaveRects() ) return 0;
	613	return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
	614	}
	615
	616	wxCoord wxRegionIterator::GetW() const
	617	{
	618	if( !HaveRects() ) return -1;
	619	return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
	620	}
	621
	622	wxCoord wxRegionIterator::GetH() const
	623	{
	624	if( !HaveRects() ) return -1;
	625	return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
	626	}
	627
	628	wxRect wxRegionIterator::GetRect() const
	629	{
	630	wxRect r;
	631	if( HaveRects() )
	632	r = ((wxRIRefData*)m_refData)->m_rects[m_current];
	633
	634	return r;
	635	}
	636