src/gtk/region.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/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
// ============================================================================

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

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifndef WX_PRECOMP
    #include "wx/log.h"
#endif

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


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

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

    wxRegionRefData(const wxRegionRefData& refData)
        : wxObjectRefData()
    {
        m_region = gdk_region_copy(refData.m_region);
    }

    ~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();

    M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
}

wxRegion::wxRegion( GdkRegion *region )
{
    m_refData = new wxRegionRefData();
    M_REGIONDATA->m_region = gdk_region_copy( region );
}

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 ) const
{
    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 )
{
    // 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 ( !width || !height )
        return TRUE;

    if ( !m_refData )
    {
        InitRect(x, y, width, height);
    }
    else
    {
        AllocExclusive();

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

        gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
    }

    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();
    }

    gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );

    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)
    {
        // intersecting with invalid region doesn't make sense
        return FALSE;
    }

    AllocExclusive();

    gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );

    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)
    {
        // subtracting from an invalid region doesn't make sense
        return FALSE;
    }

    AllocExclusive();

    gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );

    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)
    {
        return FALSE;
    }

    AllocExclusive();

    gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );

    return TRUE;
}

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

    AllocExclusive();

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

    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::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
// ----------------------------------------------------------------------------

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;

    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 );
}

wxRegionIterator::wxRegionIterator()
{
    m_refData = new wxRIRefData();
    Reset();
}

wxRegionIterator::wxRegionIterator( const wxRegion& region )
{
    m_refData = new wxRIRefData();
    Reset(region);
}

void wxRegionIterator::Reset( const wxRegion& region )
{
    m_region = region;
    ((wxRIRefData*)m_refData)->CreateRects(region);
    Reset();
}

bool wxRegionIterator::HaveRects() const
{
    return m_current < ((wxRIRefData*)m_refData)->m_numRects;
}

wxRegionIterator& wxRegionIterator::operator ++ ()
{
    if (HaveRects())
        ++m_current;

    return *this;
}

wxRegionIterator wxRegionIterator::operator ++ (int)
{
    wxRegionIterator tmp = *this;
    if (HaveRects())
        ++m_current;

    return tmp;
}

wxCoord wxRegionIterator::GetX() const
{
    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );

    return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
}

wxCoord wxRegionIterator::GetY() const
{
    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );

    return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
}

wxCoord wxRegionIterator::GetW() const
{
    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );

    return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
}

wxCoord wxRegionIterator::GetH() const
{
    wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );

    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: src/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	// ----------------------------------------------------------------------------
	16	// headers
	17	// ----------------------------------------------------------------------------
	18
	19	// For compilers that support precompilation, includes "wx.h".
	20	#include "wx/wxprec.h"
	21
	22	#ifndef WX_PRECOMP
	23	#include "wx/log.h"
	24	#endif
	25
	26	#include "wx/region.h"
	27	#include "wx/gtk/private.h"
	28
	29
	30	// ----------------------------------------------------------------------------
	31	// wxRegionRefData: private class containing the information about the region
	32	// ----------------------------------------------------------------------------
	33
	34	class wxRegionRefData : public wxObjectRefData
	35	{
	36	public:
	37	wxRegionRefData()
	38	{
	39	m_region = NULL;
	40	}
	41
	42	wxRegionRefData(const wxRegionRefData& refData)
	43	: wxObjectRefData()
	44	{
	45	m_region = gdk_region_copy(refData.m_region);
	46	}
	47
	48	~wxRegionRefData()
	49	{
	50	if (m_region)
	51	gdk_region_destroy( m_region );
	52	}
	53
	54	GdkRegion *m_region;
	55	};
	56
	57	// ----------------------------------------------------------------------------
	58	// macros
	59	// ----------------------------------------------------------------------------
	60
	61	#define M_REGIONDATA ((wxRegionRefData *)m_refData)
	62	#define M_REGIONDATA_OF(rgn) ((wxRegionRefData *)(rgn.m_refData))
	63
	64	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	65	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator,wxObject)
	66
	67	// ----------------------------------------------------------------------------
	68	// wxRegion construction
	69	// ----------------------------------------------------------------------------
	70
	71	#define M_REGIONDATA ((wxRegionRefData *)m_refData)
	72
	73	void wxRegion::InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h)
	74	{
	75	GdkRectangle rect;
	76	rect.x = x;
	77	rect.y = y;
	78	rect.width = w;
	79	rect.height = h;
	80
	81	m_refData = new wxRegionRefData();
	82
	83	M_REGIONDATA->m_region = gdk_region_rectangle( &rect );
	84	}
	85
	86	wxRegion::wxRegion( GdkRegion *region )
	87	{
	88	m_refData = new wxRegionRefData();
	89	M_REGIONDATA->m_region = gdk_region_copy( region );
	90	}
	91
	92	wxRegion::wxRegion( size_t n, const wxPoint *points, int fillStyle )
	93	{
	94	GdkPoint *gdkpoints = new GdkPoint[n];
	95	for ( size_t i = 0 ; i < n ; i++ )
	96	{
	97	gdkpoints[i].x = points[i].x;
	98	gdkpoints[i].y = points[i].y;
	99	}
	100
	101	m_refData = new wxRegionRefData();
	102
	103	GdkRegion* reg = gdk_region_polygon
	104	(
	105	gdkpoints,
	106	n,
	107	fillStyle == wxWINDING_RULE ? GDK_WINDING_RULE
	108	: GDK_EVEN_ODD_RULE
	109	);
	110
	111	M_REGIONDATA->m_region = reg;
	112
	113	delete [] gdkpoints;
	114	}
	115
	116	wxRegion::~wxRegion()
	117	{
	118	// m_refData unrefed in ~wxObject
	119	}
	120
	121	wxObjectRefData *wxRegion::CreateRefData() const
	122	{
	123	return new wxRegionRefData;
	124	}
	125
	126	wxObjectRefData wxRegion::CloneRefData(const wxObjectRefData data) const
	127	{
	128	return new wxRegionRefData((wxRegionRefData )data);
	129	}
	130
	131	// ----------------------------------------------------------------------------
	132	// wxRegion comparison
	133	// ----------------------------------------------------------------------------
	134
	135	bool wxRegion::operator==( const wxRegion& region ) const
	136	{
	137	if (m_refData == region.m_refData) return TRUE;
	138
	139	if (!m_refData \|\| !region.m_refData) return FALSE;
	140
	141	// compare the regions themselves, not the pointers to ref data!
	142	return gdk_region_equal(M_REGIONDATA->m_region,
	143	M_REGIONDATA_OF(region)->m_region);
	144	}
	145
	146	// ----------------------------------------------------------------------------
	147	// wxRegion operations
	148	// ----------------------------------------------------------------------------
	149
	150	void wxRegion::Clear()
	151	{
	152	UnRef();
	153	}
	154
	155	bool wxRegion::Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	156	{
	157	// workaround for a strange GTK/X11 bug: taking union with an empty
	158	// rectangle results in an empty region which is definitely not what we
	159	// want
	160	if ( !width \|\| !height )
	161	return TRUE;
	162
	163	if ( !m_refData )
	164	{
	165	InitRect(x, y, width, height);
	166	}
	167	else
	168	{
	169	AllocExclusive();
	170
	171	GdkRectangle rect;
	172	rect.x = x;
	173	rect.y = y;
	174	rect.width = width;
	175	rect.height = height;
	176
	177	gdk_region_union_with_rect( M_REGIONDATA->m_region, &rect );
	178	}
	179
	180	return TRUE;
	181	}
	182
	183	bool wxRegion::Union( const wxRect& rect )
	184	{
	185	return Union( rect.x, rect.y, rect.width, rect.height );
	186	}
	187
	188	bool wxRegion::Union( const wxRegion& region )
	189	{
	190	if (region.IsNull())
	191	return FALSE;
	192
	193	if (!m_refData)
	194	{
	195	m_refData = new wxRegionRefData();
	196	M_REGIONDATA->m_region = gdk_region_new();
	197	}
	198	else
	199	{
	200	AllocExclusive();
	201	}
	202
	203	gdk_region_union( M_REGIONDATA->m_region, region.GetRegion() );
	204
	205	return TRUE;
	206	}
	207
	208	bool wxRegion::Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	209	{
	210	wxRegion reg( x, y, width, height );
	211
	212	return Intersect( reg );
	213	}
	214
	215	bool wxRegion::Intersect( const wxRect& rect )
	216	{
	217	wxRegion reg( rect );
	218
	219	return Intersect( reg );
	220	}
	221
	222	bool wxRegion::Intersect( const wxRegion& region )
	223	{
	224	if (region.IsNull())
	225	return FALSE;
	226
	227	if (!m_refData)
	228	{
	229	// intersecting with invalid region doesn't make sense
	230	return FALSE;
	231	}
	232
	233	AllocExclusive();
	234
	235	gdk_region_intersect( M_REGIONDATA->m_region, region.GetRegion() );
	236
	237	return TRUE;
	238	}
	239
	240	bool wxRegion::Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	241	{
	242	wxRegion reg( x, y, width, height );
	243	return Subtract( reg );
	244	}
	245
	246	bool wxRegion::Subtract( const wxRect& rect )
	247	{
	248	wxRegion reg( rect );
	249	return Subtract( reg );
	250	}
	251
	252	bool wxRegion::Subtract( const wxRegion& region )
	253	{
	254	if (region.IsNull())
	255	return FALSE;
	256
	257	if (!m_refData)
	258	{
	259	// subtracting from an invalid region doesn't make sense
	260	return FALSE;
	261	}
	262
	263	AllocExclusive();
	264
	265	gdk_region_subtract( M_REGIONDATA->m_region, region.GetRegion() );
	266
	267	return TRUE;
	268	}
	269
	270	bool wxRegion::Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height )
	271	{
	272	wxRegion reg( x, y, width, height );
	273	return Xor( reg );
	274	}
	275
	276	bool wxRegion::Xor( const wxRect& rect )
	277	{
	278	wxRegion reg( rect );
	279	return Xor( reg );
	280	}
	281
	282	bool wxRegion::Xor( const wxRegion& region )
	283	{
	284	if (region.IsNull())
	285	return FALSE;
	286
	287	if (!m_refData)
	288	{
	289	return FALSE;
	290	}
	291
	292	AllocExclusive();
	293
	294	gdk_region_xor( M_REGIONDATA->m_region, region.GetRegion() );
	295
	296	return TRUE;
	297	}
	298
	299	bool wxRegion::Offset( wxCoord x, wxCoord y )
	300	{
	301	if (!m_refData)
	302	return FALSE;
	303
	304	AllocExclusive();
	305
	306	gdk_region_offset( M_REGIONDATA->m_region, x, y );
	307
	308	return TRUE;
	309	}
	310
	311	// ----------------------------------------------------------------------------
	312	// wxRegion tests
	313	// ----------------------------------------------------------------------------
	314
	315	void wxRegion::GetBox( wxCoord &x, wxCoord &y, wxCoord &w, wxCoord &h ) const
	316	{
	317	if ( m_refData )
	318	{
	319	GdkRectangle rect;
	320	gdk_region_get_clipbox( M_REGIONDATA->m_region, &rect );
	321	x = rect.x;
	322	y = rect.y;
	323	w = rect.width;
	324	h = rect.height;
	325	}
	326	else
	327	{
	328	x = 0;
	329	y = 0;
	330	w = -1;
	331	h = -1;
	332	}
	333	}
	334
	335	wxRect wxRegion::GetBox() const
	336	{
	337	wxCoord x, y, w, h;
	338	GetBox( x, y, w, h );
	339	return wxRect( x, y, w, h );
	340	}
	341
	342	bool wxRegion::Empty() const
	343	{
	344	if (!m_refData)
	345	return TRUE;
	346
	347	return gdk_region_empty( M_REGIONDATA->m_region );
	348	}
	349
	350	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y ) const
	351	{
	352	if (!m_refData)
	353	return wxOutRegion;
	354
	355	if (gdk_region_point_in( M_REGIONDATA->m_region, x, y ))
	356	return wxInRegion;
	357	else
	358	return wxOutRegion;
	359	}
	360
	361	wxRegionContain wxRegion::Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const
	362	{
	363	if (!m_refData)
	364	return wxOutRegion;
	365
	366	GdkRectangle rect;
	367	rect.x = x;
	368	rect.y = y;
	369	rect.width = w;
	370	rect.height = h;
	371	GdkOverlapType res = gdk_region_rect_in( M_REGIONDATA->m_region, &rect );
	372	switch (res)
	373	{
	374	case GDK_OVERLAP_RECTANGLE_IN: return wxInRegion;
	375	case GDK_OVERLAP_RECTANGLE_OUT: return wxOutRegion;
	376	case GDK_OVERLAP_RECTANGLE_PART: return wxPartRegion;
	377	}
	378	return wxOutRegion;
	379	}
	380
	381	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	382	{
	383	return Contains( pt.x, pt.y );
	384	}
	385
	386	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	387	{
	388	return Contains( rect.x, rect.y, rect.width, rect.height );
	389	}
	390
	391	GdkRegion *wxRegion::GetRegion() const
	392	{
	393	if (!m_refData)
	394	return (GdkRegion*) NULL;
	395
	396	return M_REGIONDATA->m_region;
	397	}
	398
	399	// ----------------------------------------------------------------------------
	400	// wxRegionIterator
	401	// ----------------------------------------------------------------------------
	402
	403	class wxRIRefData: public wxObjectRefData
	404	{
	405	public:
	406	wxRIRefData() { Init(); }
	407	virtual ~wxRIRefData();
	408
	409	void CreateRects( const wxRegion& r );
	410
	411	void Init() { m_rects = NULL; m_numRects = 0; }
	412
	413	wxRect *m_rects;
	414	size_t m_numRects;
	415	};
	416
	417	wxRIRefData::~wxRIRefData()
	418	{
	419	delete [] m_rects;
	420	}
	421
	422	void wxRIRefData::CreateRects( const wxRegion& region )
	423	{
	424	delete [] m_rects;
	425
	426	Init();
	427
	428	GdkRegion *gdkregion = region.GetRegion();
	429	if (!gdkregion)
	430	return;
	431
	432	GdkRectangle *gdkrects = NULL;
	433	gint numRects = 0;
	434	gdk_region_get_rectangles( gdkregion, &gdkrects, &numRects );
	435
	436	m_numRects = numRects;
	437	if (numRects)
	438	{
	439	m_rects = new wxRect[m_numRects];
	440	for (size_t i=0; i < m_numRects; ++i)
	441	{
	442	GdkRectangle &gr = gdkrects[i];
	443	wxRect &wr = m_rects[i];
	444	wr.x = gr.x;
	445	wr.y = gr.y;
	446	wr.width = gr.width;
	447	wr.height = gr.height;
	448	}
	449	}
	450	g_free( gdkrects );
	451	}
	452
	453	wxRegionIterator::wxRegionIterator()
	454	{
	455	m_refData = new wxRIRefData();
	456	Reset();
	457	}
	458
	459	wxRegionIterator::wxRegionIterator( const wxRegion& region )
	460	{
	461	m_refData = new wxRIRefData();
	462	Reset(region);
	463	}
	464
	465	void wxRegionIterator::Reset( const wxRegion& region )
	466	{
	467	m_region = region;
	468	((wxRIRefData*)m_refData)->CreateRects(region);
	469	Reset();
	470	}
	471
	472	bool wxRegionIterator::HaveRects() const
	473	{
	474	return m_current < ((wxRIRefData*)m_refData)->m_numRects;
	475	}
	476
	477	wxRegionIterator& wxRegionIterator::operator ++ ()
	478	{
	479	if (HaveRects())
	480	++m_current;
	481
	482	return *this;
	483	}
	484
	485	wxRegionIterator wxRegionIterator::operator ++ (int)
	486	{
	487	wxRegionIterator tmp = *this;
	488	if (HaveRects())
	489	++m_current;
	490
	491	return tmp;
	492	}
	493
	494	wxCoord wxRegionIterator::GetX() const
	495	{
	496	wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
	497
	498	return ((wxRIRefData*)m_refData)->m_rects[m_current].x;
	499	}
	500
	501	wxCoord wxRegionIterator::GetY() const
	502	{
	503	wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
	504
	505	return ((wxRIRefData*)m_refData)->m_rects[m_current].y;
	506	}
	507
	508	wxCoord wxRegionIterator::GetW() const
	509	{
	510	wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
	511
	512	return ((wxRIRefData*)m_refData)->m_rects[m_current].width;
	513	}
	514
	515	wxCoord wxRegionIterator::GetH() const
	516	{
	517	wxCHECK_MSG( HaveRects(), 0, _T("invalid wxRegionIterator") );
	518
	519	return ((wxRIRefData*)m_refData)->m_rects[m_current].height;
	520	}
	521
	522	wxRect wxRegionIterator::GetRect() const
	523	{
	524	wxRect r;
	525	if( HaveRects() )
	526	r = ((wxRIRefData*)m_refData)->m_rects[m_current];
	527
	528	return r;
	529	}