src/mac/carbon/region.cpp

/////////////////////////////////////////////////////////////////////////////
// File:      src/mac/carbon/region.cpp
// Purpose:   Region class
// Author:    Stefan Csomor
// Created:   Fri Oct 24 10:46:34 MET 1997
// RCS-ID:    $Id$
// Copyright: (c) 1997 Stefan Csomor
// Licence:   wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#include "wx/region.h"

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

#include "wx/mac/uma.h"

IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)

//-----------------------------------------------------------------------------
// wxRegionRefData implementation
//-----------------------------------------------------------------------------

class WXDLLEXPORT wxRegionRefData : public wxGDIRefData
{
public:
    wxRegionRefData()
    {
        m_macRgn.reset( HIShapeCreateMutable() );
    }

    wxRegionRefData(HIShapeRef hRegion)
    {
        m_macRgn.reset( HIShapeCreateMutableCopy(hRegion) );
    }

    wxRegionRefData(long x, long y, long w, long h)
    {
        CGRect r = CGRectMake(x,y,w,h);
        wxCFRef<HIShapeRef> rect(HIShapeCreateWithRect(&r));
        m_macRgn.reset( HIShapeCreateMutableCopy(rect) );
    }

    wxRegionRefData(const wxRegionRefData& data)
        : wxGDIRefData()
    {
        m_macRgn.reset( HIShapeCreateMutableCopy(data.m_macRgn) );
    }

    virtual ~wxRegionRefData()
    {
    }

    wxCFRef<HIMutableShapeRef> m_macRgn;
};

#define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn)
#define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn)

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

/*!
 * Create an empty region.
 */
wxRegion::wxRegion()
{
    m_refData = new wxRegionRefData();
}

wxRegion::wxRegion(WXHRGN hRegion )
{
    m_refData = new wxRegionRefData(hRegion);
}

wxRegion::wxRegion(long x, long y, long w, long h)
{
    m_refData = new wxRegionRefData(x , y , w , h );
}

wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
{
    m_refData = new wxRegionRefData(topLeft.x , topLeft.y ,
                                    topLeft.x - bottomRight.x ,
                                    topLeft.y - bottomRight.y);
}

wxRegion::wxRegion(const wxRect& rect)
{
    m_refData = new wxRegionRefData(rect.x , rect.y , rect.width , rect.height);
}

wxRegion::wxRegion(size_t n, const wxPoint *points, int WXUNUSED(fillStyle))
{
    m_refData = new wxRegionRefData;

#if 0 // ndef __LP64__
    // TODO : any APIs ?
    // OS X somehow does not collect the region invisibly as before, so sometimes things
    // get drawn on screen instead of just being combined into a region, therefore we allocate a temp gworld now

    GWorldPtr gWorld = NULL;
    GWorldPtr oldWorld;
    GDHandle oldGDHandle;
    OSStatus err;
    Rect destRect = { 0, 0, 1, 1 };

    ::GetGWorld( &oldWorld, &oldGDHandle );
    err = ::NewGWorld( &gWorld, 32, &destRect, NULL, NULL, 0 );
    if ( err == noErr )
    {
        ::SetGWorld( gWorld, GetGDevice() );

        OpenRgn();

        wxCoord x1, x2 , y1 , y2 ;
        x2 = x1 = points[0].x ;
        y2 = y1 = points[0].y ;

        ::MoveTo( x1, y1 );
        for (size_t i = 1; i < n; i++)
        {
            x2 = points[i].x ;
            y2 = points[i].y ;
            ::LineTo( x2, y2 );
        }

        // close the polyline if necessary
        if ( x1 != x2 || y1 != y2 )
            ::LineTo( x1, y1 ) ;

        CloseRgn( M_REGION ) ;

        ::SetGWorld( oldWorld, oldGDHandle );
    }
#endif
}

wxRegion::~wxRegion()
{
    // m_refData unrefed in ~wxObject
}

//-----------------------------------------------------------------------------
//# Modify region
//-----------------------------------------------------------------------------

//! Clear current region
void wxRegion::Clear()
{
    UnRef();
}

// Move the region
bool wxRegion::DoOffset(wxCoord x, wxCoord y)
{
    wxCHECK_MSG( M_REGION, false, _T("invalid wxRegion") );

    if ( !x && !y )
        // nothing to do
        return true;

    verify_noerr( HIShapeOffset( M_REGION , x , y ) ) ;

    return true ;
}


//! Union /e region with this.
bool wxRegion::DoCombine(const wxRegion& region, wxRegionOp op)
{
    wxCHECK_MSG( region.Ok(), false, _T("invalid wxRegion") );

    // Don't change shared data
    if (!m_refData)
    {
        m_refData = new wxRegionRefData();
    }
    else if (m_refData->GetRefCount() > 1)
    {
        wxRegionRefData* ref = (wxRegionRefData*)m_refData;
        UnRef();
        m_refData = new wxRegionRefData(*ref);
    }

    switch (op)
    {
        case wxRGN_AND:
            verify_noerr( HIShapeIntersect( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
            break ;

        case wxRGN_OR:
            verify_noerr( HIShapeUnion( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
            break ;

        case wxRGN_XOR:
            {
                // XOR is defined as the difference between union and intersection
                wxCFRef< HIShapeRef > unionshape( HIShapeCreateUnion( M_REGION , OTHER_M_REGION(region) ) );
                wxCFRef< HIShapeRef > intersectionshape( HIShapeCreateIntersection( M_REGION , OTHER_M_REGION(region) ) );
                verify_noerr( HIShapeDifference( unionshape, intersectionshape, M_REGION ) );
            }
            break ;

        case wxRGN_DIFF:
            verify_noerr( HIShapeDifference( M_REGION , OTHER_M_REGION(region) , M_REGION ) ) ;
            break ;

        case wxRGN_COPY:
        default:
            M_REGION.reset( HIShapeCreateMutableCopy( OTHER_M_REGION(region) ) );
            break ;
    }

    return true;
}

//-----------------------------------------------------------------------------
//# Information on region
//-----------------------------------------------------------------------------

bool wxRegion::DoIsEqual(const wxRegion& WXUNUSED(region)) const
{
    wxFAIL_MSG( _T("not implemented") );

    return false;
}

// Outer bounds of region
bool wxRegion::DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
{
    if (m_refData)
    {
        CGRect box ;
        HIShapeGetBounds( M_REGION , &box ) ;
        x = box.origin.x ;
        y = box.origin.y ;
        w = box.size.width ;
        h = box.size.height ;

        return true;
    }
    else
    {
        x = y = w = h = 0;

        return false;
    }
}

// Is region empty?
bool wxRegion::IsEmpty() const
{
    if ( m_refData )
        return HIShapeIsEmpty( M_REGION ) ;
    else
        return true ;
}

const WXHRGN wxRegion::GetWXHRGN() const
{
    return M_REGION ;
}

//-----------------------------------------------------------------------------
//# Tests
//-----------------------------------------------------------------------------

// Does the region contain the point?
wxRegionContain wxRegion::DoContainsPoint(wxCoord x, wxCoord y) const
{
    if (!m_refData)
        return wxOutRegion;

    CGPoint p = { y , x } ;
    if (HIShapeContainsPoint( M_REGION , &p ) )
        return wxInRegion;

    return wxOutRegion;
}

// Does the region contain the rectangle (x, y, w, h)?
wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const
{
    if (!m_refData)
        return wxOutRegion;

    CGRect rect = CGRectMake(r.x,r.y,r.width,r.height);
    wxCFRef<HIShapeRef> rectshape(HIShapeCreateWithRect(&rect));
    wxCFRef<HIShapeRef> intersect(HIShapeCreateIntersection(rectshape,M_REGION));
    CGRect bounds;
    HIShapeGetBounds(intersect, &bounds);

    if ( HIShapeIsRectangular(intersect) && CGRectEqualToRect(rect,bounds) )
        return wxInRegion;
    else if ( HIShapeIsEmpty( intersect ) )
        return wxOutRegion;
    else
        return wxPartRegion;
}

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//                               wxRegionIterator                            //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

/*!
 * Initialize empty iterator
 */
wxRegionIterator::wxRegionIterator()
    : m_current(0), m_numRects(0), m_rects(NULL)
{
}

wxRegionIterator::~wxRegionIterator()
{
    if (m_rects)
    {
        delete [] m_rects;
        m_rects = NULL;
    }
}

wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator)
    : wxObject()
    , m_current(iterator.m_current)
    , m_numRects(0)
    , m_rects(NULL)
{
    SetRects(iterator.m_numRects, iterator.m_rects);
}

wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator)
{
    m_current  = iterator.m_current;
    SetRects(iterator.m_numRects, iterator.m_rects);

    return *this;
}

/*!
 * Set iterator rects for region
 */
void wxRegionIterator::SetRects(long numRects, wxRect *rects)
{
    if (m_rects)
    {
        delete [] m_rects;
        m_rects = NULL;
    }

    if (rects && (numRects > 0))
    {
        int i;

        m_rects = new wxRect[numRects];
        for (i = 0; i < numRects; i++)
            m_rects[i] = rects[i];
    }

    m_numRects = numRects;
}

/*!
 * Initialize iterator for region
 */
wxRegionIterator::wxRegionIterator(const wxRegion& region)
{
    m_rects = NULL;

    Reset(region);
}

/*!
 * Reset iterator for a new /e region.
 */

#ifndef __LP64__
OSStatus wxMacRegionToRectsCounterCallback(
    UInt16 message, RgnHandle WXUNUSED(region), const Rect *WXUNUSED(rect), void *data )
{
    long *m_numRects = (long*) data ;
    if ( message == kQDRegionToRectsMsgInit )
    {
        (*m_numRects) = 0 ;
    }
    else if (message == kQDRegionToRectsMsgParse)
    {
        (*m_numRects) += 1 ;
    }

    return noErr;
}

class RegionToRectsCallbackData
{
public :
    wxRect* m_rects ;
    long m_current ;
};

OSStatus wxMacRegionToRectsSetterCallback(
    UInt16 message, RgnHandle WXUNUSED(region), const Rect *rect, void *data )
{
    if (message == kQDRegionToRectsMsgParse)
    {
        RegionToRectsCallbackData *cb = (RegionToRectsCallbackData*) data ;
        cb->m_rects[cb->m_current++] = wxRect( rect->left , rect->top , rect->right - rect->left , rect->bottom - rect->top ) ;
    }

    return noErr;
}
#endif

void wxRegionIterator::Reset(const wxRegion& region)
{
    m_current = 0;
    m_region = region;

    if (m_rects)
    {
        delete [] m_rects;
        m_rects = NULL;
    }

    if (m_region.IsEmpty())
    {
        m_numRects = 0;
    }
    else
    {
#ifdef __LP64__
        // copying this to a path and dissecting the path would be an option
        m_numRects = 1;
        m_rects = new wxRect[m_numRects];
        m_rects[0] = m_region.GetBox();

#else
        RegionToRectsUPP proc = (RegionToRectsUPP) wxMacRegionToRectsCounterCallback;

        OSStatus err = noErr;
        RgnHandle rgn = NewRgn();
        HIShapeGetAsQDRgn(OTHER_M_REGION(region), rgn);

        err = QDRegionToRects (rgn, kQDParseRegionFromTopLeft, proc, (void*)&m_numRects);
        if (err == noErr)
        {
            proc = (RegionToRectsUPP) wxMacRegionToRectsSetterCallback;
            m_rects = new wxRect[m_numRects];
            RegionToRectsCallbackData data ;
            data.m_rects = m_rects ;
            data.m_current = 0 ;
            QDRegionToRects( rgn , kQDParseRegionFromTopLeft, proc, (void*)&data );
        }
        else
        {
            m_numRects = 0;
        }
        DisposeRgn( rgn );
#endif
    }
}

/*!
 * Increment iterator. The rectangle returned is the one after the
 * incrementation.
 */
wxRegionIterator& wxRegionIterator::operator ++ ()
{
    if (m_current < m_numRects)
        ++m_current;

    return *this;
}

/*!
 * Increment iterator. The rectangle returned is the one before the
 * incrementation.
 */
wxRegionIterator wxRegionIterator::operator ++ (int)
{
    wxRegionIterator previous(*this);

    if (m_current < m_numRects)
        ++m_current;

    return previous;
}

long wxRegionIterator::GetX() const
{
    if (m_current < m_numRects)
        return m_rects[m_current].x;

    return 0;
}

long wxRegionIterator::GetY() const
{
    if (m_current < m_numRects)
        return m_rects[m_current].y;

    return 0;
}

long wxRegionIterator::GetW() const
{
    if (m_current < m_numRects)
        return m_rects[m_current].width ;

    return 0;
}

long wxRegionIterator::GetH() const
{
    if (m_current < m_numRects)
        return m_rects[m_current].height;

    return 0;
}
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// File: src/mac/carbon/region.cpp
	3	// Purpose: Region class
	4	// Author: Stefan Csomor
	5	// Created: Fri Oct 24 10:46:34 MET 1997
	6	// RCS-ID: $Id$
	7	// Copyright: (c) 1997 Stefan Csomor
	8	// Licence: wxWindows licence
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	#include "wx/wxprec.h"
	12
	13	#include "wx/region.h"
	14
	15	#ifndef WX_PRECOMP
	16	#include "wx/gdicmn.h"
	17	#endif
	18
	19	#include "wx/mac/uma.h"
	20
	21	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	22	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
	23
	24	//-----------------------------------------------------------------------------
	25	// wxRegionRefData implementation
	26	//-----------------------------------------------------------------------------
	27
	28	class WXDLLEXPORT wxRegionRefData : public wxGDIRefData
	29	{
	30	public:
	31	wxRegionRefData()
	32	{
	33	m_macRgn.reset( HIShapeCreateMutable() );
	34	}
	35
	36	wxRegionRefData(HIShapeRef hRegion)
	37	{
	38	m_macRgn.reset( HIShapeCreateMutableCopy(hRegion) );
	39	}
	40
	41	wxRegionRefData(long x, long y, long w, long h)
	42	{
	43	CGRect r = CGRectMake(x,y,w,h);
	44	wxCFRef<HIShapeRef> rect(HIShapeCreateWithRect(&r));
	45	m_macRgn.reset( HIShapeCreateMutableCopy(rect) );
	46	}
	47
	48	wxRegionRefData(const wxRegionRefData& data)
	49	: wxGDIRefData()
	50	{
	51	m_macRgn.reset( HIShapeCreateMutableCopy(data.m_macRgn) );
	52	}
	53
	54	virtual ~wxRegionRefData()
	55	{
	56	}
	57
	58	wxCFRef<HIMutableShapeRef> m_macRgn;
	59	};
	60
	61	#define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn)
	62	#define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn)
	63
	64	//-----------------------------------------------------------------------------
	65	// wxRegion
	66	//-----------------------------------------------------------------------------
	67
	68	/*!
	69	* Create an empty region.
	70	*/
	71	wxRegion::wxRegion()
	72	{
	73	m_refData = new wxRegionRefData();
	74	}
	75
	76	wxRegion::wxRegion(WXHRGN hRegion )
	77	{
	78	m_refData = new wxRegionRefData(hRegion);
	79	}
	80
	81	wxRegion::wxRegion(long x, long y, long w, long h)
	82	{
	83	m_refData = new wxRegionRefData(x , y , w , h );
	84	}
	85
	86	wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
	87	{
	88	m_refData = new wxRegionRefData(topLeft.x , topLeft.y ,
	89	topLeft.x - bottomRight.x ,
	90	topLeft.y - bottomRight.y);
	91	}
	92
	93	wxRegion::wxRegion(const wxRect& rect)
	94	{
	95	m_refData = new wxRegionRefData(rect.x , rect.y , rect.width , rect.height);
	96	}
	97
	98	wxRegion::wxRegion(size_t n, const wxPoint *points, int WXUNUSED(fillStyle))
	99	{
	100	m_refData = new wxRegionRefData;
	101
	102	#if 0 // ndef __LP64__
	103	// TODO : any APIs ?
	104	// OS X somehow does not collect the region invisibly as before, so sometimes things
	105	// get drawn on screen instead of just being combined into a region, therefore we allocate a temp gworld now
	106
	107	GWorldPtr gWorld = NULL;
	108	GWorldPtr oldWorld;
	109	GDHandle oldGDHandle;
	110	OSStatus err;
	111	Rect destRect = { 0, 0, 1, 1 };
	112
	113	::GetGWorld( &oldWorld, &oldGDHandle );
	114	err = ::NewGWorld( &gWorld, 32, &destRect, NULL, NULL, 0 );
	115	if ( err == noErr )
	116	{
	117	::SetGWorld( gWorld, GetGDevice() );
	118
	119	OpenRgn();
	120
	121	wxCoord x1, x2 , y1 , y2 ;
	122	x2 = x1 = points[0].x ;
	123	y2 = y1 = points[0].y ;
	124
	125	::MoveTo( x1, y1 );
	126	for (size_t i = 1; i < n; i++)
	127	{
	128	x2 = points[i].x ;
	129	y2 = points[i].y ;
	130	::LineTo( x2, y2 );
	131	}
	132
	133	// close the polyline if necessary
	134	if ( x1 != x2 \|\| y1 != y2 )
	135	::LineTo( x1, y1 ) ;
	136
	137	CloseRgn( M_REGION ) ;
	138
	139	::SetGWorld( oldWorld, oldGDHandle );
	140	}
	141	#endif
	142	}
	143
	144	wxRegion::~wxRegion()
	145	{
	146	// m_refData unrefed in ~wxObject
	147	}
	148
	149	//-----------------------------------------------------------------------------
	150	//# Modify region
	151	//-----------------------------------------------------------------------------
	152
	153	//! Clear current region
	154	void wxRegion::Clear()
	155	{
	156	UnRef();
	157	}
	158
	159	// Move the region
	160	bool wxRegion::DoOffset(wxCoord x, wxCoord y)
	161	{
	162	wxCHECK_MSG( M_REGION, false, _T("invalid wxRegion") );
	163
	164	if ( !x && !y )
	165	// nothing to do
	166	return true;
	167
	168	verify_noerr( HIShapeOffset( M_REGION , x , y ) ) ;
	169
	170	return true ;
	171	}
	172
	173
	174	//! Union /e region with this.
	175	bool wxRegion::DoCombine(const wxRegion& region, wxRegionOp op)
	176	{
	177	wxCHECK_MSG( region.Ok(), false, _T("invalid wxRegion") );
	178
	179	// Don't change shared data
	180	if (!m_refData)
	181	{
	182	m_refData = new wxRegionRefData();
	183	}
	184	else if (m_refData->GetRefCount() > 1)
	185	{
	186	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	187	UnRef();
	188	m_refData = new wxRegionRefData(*ref);
	189	}
	190
	191	switch (op)
	192	{
	193	case wxRGN_AND:
	194	verify_noerr( HIShapeIntersect( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
	195	break ;
	196
	197	case wxRGN_OR:
	198	verify_noerr( HIShapeUnion( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
	199	break ;
	200
	201	case wxRGN_XOR:
	202	{
	203	// XOR is defined as the difference between union and intersection
	204	wxCFRef< HIShapeRef > unionshape( HIShapeCreateUnion( M_REGION , OTHER_M_REGION(region) ) );
	205	wxCFRef< HIShapeRef > intersectionshape( HIShapeCreateIntersection( M_REGION , OTHER_M_REGION(region) ) );
	206	verify_noerr( HIShapeDifference( unionshape, intersectionshape, M_REGION ) );
	207	}
	208	break ;
	209
	210	case wxRGN_DIFF:
	211	verify_noerr( HIShapeDifference( M_REGION , OTHER_M_REGION(region) , M_REGION ) ) ;
	212	break ;
	213
	214	case wxRGN_COPY:
	215	default:
	216	M_REGION.reset( HIShapeCreateMutableCopy( OTHER_M_REGION(region) ) );
	217	break ;
	218	}
	219
	220	return true;
	221	}
	222
	223	//-----------------------------------------------------------------------------
	224	//# Information on region
	225	//-----------------------------------------------------------------------------
	226
	227	bool wxRegion::DoIsEqual(const wxRegion& WXUNUSED(region)) const
	228	{
	229	wxFAIL_MSG( _T("not implemented") );
	230
	231	return false;
	232	}
	233
	234	// Outer bounds of region
	235	bool wxRegion::DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
	236	{
	237	if (m_refData)
	238	{
	239	CGRect box ;
	240	HIShapeGetBounds( M_REGION , &box ) ;
	241	x = box.origin.x ;
	242	y = box.origin.y ;
	243	w = box.size.width ;
	244	h = box.size.height ;
	245
	246	return true;
	247	}
	248	else
	249	{
	250	x = y = w = h = 0;
	251
	252	return false;
	253	}
	254	}
	255
	256	// Is region empty?
	257	bool wxRegion::IsEmpty() const
	258	{
	259	if ( m_refData )
	260	return HIShapeIsEmpty( M_REGION ) ;
	261	else
	262	return true ;
	263	}
	264
	265	const WXHRGN wxRegion::GetWXHRGN() const
	266	{
	267	return M_REGION ;
	268	}
	269
	270	//-----------------------------------------------------------------------------
	271	//# Tests
	272	//-----------------------------------------------------------------------------
	273
	274	// Does the region contain the point?
	275	wxRegionContain wxRegion::DoContainsPoint(wxCoord x, wxCoord y) const
	276	{
	277	if (!m_refData)
	278	return wxOutRegion;
	279
	280	CGPoint p = { y , x } ;
	281	if (HIShapeContainsPoint( M_REGION , &p ) )
	282	return wxInRegion;
	283
	284	return wxOutRegion;
	285	}
	286
	287	// Does the region contain the rectangle (x, y, w, h)?
	288	wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const
	289	{
	290	if (!m_refData)
	291	return wxOutRegion;
	292
	293	CGRect rect = CGRectMake(r.x,r.y,r.width,r.height);
	294	wxCFRef<HIShapeRef> rectshape(HIShapeCreateWithRect(&rect));
	295	wxCFRef<HIShapeRef> intersect(HIShapeCreateIntersection(rectshape,M_REGION));
	296	CGRect bounds;
	297	HIShapeGetBounds(intersect, &bounds);
	298
	299	if ( HIShapeIsRectangular(intersect) && CGRectEqualToRect(rect,bounds) )
	300	return wxInRegion;
	301	else if ( HIShapeIsEmpty( intersect ) )
	302	return wxOutRegion;
	303	else
	304	return wxPartRegion;
	305	}
	306
	307	///////////////////////////////////////////////////////////////////////////////
	308	// //
	309	// wxRegionIterator //
	310	// //
	311	///////////////////////////////////////////////////////////////////////////////
	312
	313	/*!
	314	* Initialize empty iterator
	315	*/
	316	wxRegionIterator::wxRegionIterator()
	317	: m_current(0), m_numRects(0), m_rects(NULL)
	318	{
	319	}
	320
	321	wxRegionIterator::~wxRegionIterator()
	322	{
	323	if (m_rects)
	324	{
	325	delete [] m_rects;
	326	m_rects = NULL;
	327	}
	328	}
	329
	330	wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator)
	331	: wxObject()
	332	, m_current(iterator.m_current)
	333	, m_numRects(0)
	334	, m_rects(NULL)
	335	{
	336	SetRects(iterator.m_numRects, iterator.m_rects);
	337	}
	338
	339	wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator)
	340	{
	341	m_current = iterator.m_current;
	342	SetRects(iterator.m_numRects, iterator.m_rects);
	343
	344	return *this;
	345	}
	346
	347	/*!
	348	* Set iterator rects for region
	349	*/
	350	void wxRegionIterator::SetRects(long numRects, wxRect *rects)
	351	{
	352	if (m_rects)
	353	{
	354	delete [] m_rects;
	355	m_rects = NULL;
	356	}
	357
	358	if (rects && (numRects > 0))
	359	{
	360	int i;
	361
	362	m_rects = new wxRect[numRects];
	363	for (i = 0; i < numRects; i++)
	364	m_rects[i] = rects[i];
	365	}
	366
	367	m_numRects = numRects;
	368	}
	369
	370	/*!
	371	* Initialize iterator for region
	372	*/
	373	wxRegionIterator::wxRegionIterator(const wxRegion& region)
	374	{
	375	m_rects = NULL;
	376
	377	Reset(region);
	378	}
	379
	380	/*!
	381	* Reset iterator for a new /e region.
	382	*/
	383
	384	#ifndef __LP64__
	385	OSStatus wxMacRegionToRectsCounterCallback(
	386	UInt16 message, RgnHandle WXUNUSED(region), const Rect WXUNUSED(rect), void data )
	387	{
	388	long m_numRects = (long) data ;
	389	if ( message == kQDRegionToRectsMsgInit )
	390	{
	391	(*m_numRects) = 0 ;
	392	}
	393	else if (message == kQDRegionToRectsMsgParse)
	394	{
	395	(*m_numRects) += 1 ;
	396	}
	397
	398	return noErr;
	399	}
	400
	401	class RegionToRectsCallbackData
	402	{
	403	public :
	404	wxRect* m_rects ;
	405	long m_current ;
	406	};
	407
	408	OSStatus wxMacRegionToRectsSetterCallback(
	409	UInt16 message, RgnHandle WXUNUSED(region), const Rect rect, void data )
	410	{
	411	if (message == kQDRegionToRectsMsgParse)
	412	{
	413	RegionToRectsCallbackData cb = (RegionToRectsCallbackData) data ;
	414	cb->m_rects[cb->m_current++] = wxRect( rect->left , rect->top , rect->right - rect->left , rect->bottom - rect->top ) ;
	415	}
	416
	417	return noErr;
	418	}
	419	#endif
	420
	421	void wxRegionIterator::Reset(const wxRegion& region)
	422	{
	423	m_current = 0;
	424	m_region = region;
	425
	426	if (m_rects)
	427	{
	428	delete [] m_rects;
	429	m_rects = NULL;
	430	}
	431
	432	if (m_region.IsEmpty())
	433	{
	434	m_numRects = 0;
	435	}
	436	else
	437	{
	438	#ifdef __LP64__
	439	// copying this to a path and dissecting the path would be an option
	440	m_numRects = 1;
	441	m_rects = new wxRect[m_numRects];
	442	m_rects[0] = m_region.GetBox();
	443
	444	#else
	445	RegionToRectsUPP proc = (RegionToRectsUPP) wxMacRegionToRectsCounterCallback;
	446
	447	OSStatus err = noErr;
	448	RgnHandle rgn = NewRgn();
	449	HIShapeGetAsQDRgn(OTHER_M_REGION(region), rgn);
	450
	451	err = QDRegionToRects (rgn, kQDParseRegionFromTopLeft, proc, (void*)&m_numRects);
	452	if (err == noErr)
	453	{
	454	proc = (RegionToRectsUPP) wxMacRegionToRectsSetterCallback;
	455	m_rects = new wxRect[m_numRects];
	456	RegionToRectsCallbackData data ;
	457	data.m_rects = m_rects ;
	458	data.m_current = 0 ;
	459	QDRegionToRects( rgn , kQDParseRegionFromTopLeft, proc, (void*)&data );
	460	}
	461	else
	462	{
	463	m_numRects = 0;
	464	}
	465	DisposeRgn( rgn );
	466	#endif
	467	}
	468	}
	469
	470	/*!
	471	* Increment iterator. The rectangle returned is the one after the
	472	* incrementation.
	473	*/
	474	wxRegionIterator& wxRegionIterator::operator ++ ()
	475	{
	476	if (m_current < m_numRects)
	477	++m_current;
	478
	479	return *this;
	480	}
	481
	482	/*!
	483	* Increment iterator. The rectangle returned is the one before the
	484	* incrementation.
	485	*/
	486	wxRegionIterator wxRegionIterator::operator ++ (int)
	487	{
	488	wxRegionIterator previous(*this);
	489
	490	if (m_current < m_numRects)
	491	++m_current;
	492
	493	return previous;
	494	}
	495
	496	long wxRegionIterator::GetX() const
	497	{
	498	if (m_current < m_numRects)
	499	return m_rects[m_current].x;
	500
	501	return 0;
	502	}
	503
	504	long wxRegionIterator::GetY() const
	505	{
	506	if (m_current < m_numRects)
	507	return m_rects[m_current].y;
	508
	509	return 0;
	510	}
	511
	512	long wxRegionIterator::GetW() const
	513	{
	514	if (m_current < m_numRects)
	515	return m_rects[m_current].width ;
	516
	517	return 0;
	518	}
	519
	520	long wxRegionIterator::GetH() const
	521	{
	522	if (m_current < m_numRects)
	523	return m_rects[m_current].height;
	524
	525	return 0;
	526	}