src/mac/carbon/region.cpp

/////////////////////////////////////////////////////////////////////////////
// File:      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
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "region.h"
#endif

#include "wx/wxprec.h"

#include "wx/region.h"
#include "wx/gdicmn.h"
#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 = NewRgn() ;
    }

    wxRegionRefData(const wxRegionRefData& data)
        : wxGDIRefData()
    {
        m_macRgn = NewRgn() ;
        CopyRgn( data.m_macRgn , m_macRgn ) ;
    }

    ~wxRegionRefData()
    {
        DisposeRgn( m_macRgn ) ;
    }
    RgnHandle    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;
    CopyRgn( (RgnHandle) hRegion , (RgnHandle) M_REGION ) ;
}

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

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

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

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

    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 ) ;
    }
    ClosePoly();
    CloseRgn( M_REGION ) ;
}

/*!
 * Destroy the region.
 */
wxRegion::~wxRegion()
{
    // m_refData unrefed in ~wxObject
}

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

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

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

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

    OffsetRgn( M_REGION , x , y ) ;
    return true ;
}


//! Combine rectangle (x, y, w, h) with this.
bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
{
    // 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);
    }
    RgnHandle rgn = NewRgn() ;
        SetRectRgn( rgn , x , y, x+width,y + height ) ;

    switch (op)
    {
        case wxRGN_AND:
            SectRgn( M_REGION , rgn , M_REGION ) ;
            break ;
        case wxRGN_OR:
            UnionRgn( M_REGION , rgn , M_REGION ) ;
            break ;
        case wxRGN_XOR:
             XorRgn( M_REGION , rgn , M_REGION ) ;
            break ;
        case wxRGN_DIFF:
            DiffRgn( M_REGION , rgn , M_REGION ) ;
            break ;
        case wxRGN_COPY:
        default:
                   CopyRgn( rgn ,M_REGION ) ;
            break ;
    }

        DisposeRgn( rgn ) ;

    return TRUE;
}

//! Union /e region with this.
bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
{
    if (region.Empty())
        return FALSE;

    // 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:
            SectRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
            break ;
        case wxRGN_OR:
            UnionRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
            break ;
        case wxRGN_XOR:
             XorRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
            break ;
        case wxRGN_DIFF:
            DiffRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
            break ;
        case wxRGN_COPY:
        default:
                   CopyRgn( OTHER_M_REGION(region) ,M_REGION ) ;
            break ;
    }

    return TRUE;
}

bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
{
    return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
}

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

// Outer bounds of region
void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
{
    if (m_refData)
    {
        Rect box ;
        GetRegionBounds( M_REGION , &box ) ;
        x = box.left ;
        y = box.top ;
        w = box.right - box.left ;
        h = box.bottom - box.top ;
    }
    else
    {
        x = y = w = h = 0;
    }
}

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

// Is region empty?
bool wxRegion::Empty() const
{
    return EmptyRgn( M_REGION ) ;
}

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

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

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

    // TODO. Return wxInRegion if within region.
    if (0)
        return wxInRegion;
    return wxOutRegion;
}

// Does the region contain the point pt?
wxRegionContain wxRegion::Contains(const wxPoint& pt) const
{
    if (!m_refData)
        return wxOutRegion;

    Point p = { pt.y , pt.x } ;
    if (PtInRgn( p , M_REGION ) )
        return wxInRegion;

    return wxOutRegion;
}

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

    Rect rect = { y , x , y + h , x + w } ;
    if (RectInRgn( &rect , M_REGION ) )
        return wxInRegion;
    else
        return wxOutRegion;
}

// Does the region contain the rectangle rect
wxRegionContain wxRegion::Contains(const wxRect& rect) const
{
    if (!m_refData)
        return wxOutRegion;

    long x, y, w, h;
    x = rect.x;
    y = rect.y;
    w = rect.GetWidth();
    h = rect.GetHeight();
    return Contains(x, y, w, h);
}

///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//                               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)
    {
        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.
 */

OSStatus wxMacRegionToRectsCounterCallback (
    UInt16 message, RgnHandle region, const Rect *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 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;
}

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

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

    if (m_region.Empty())
        m_numRects = 0;
    else
    {
        RegionToRectsUPP proc = NewRegionToRectsUPP (wxMacRegionToRectsCounterCallback);

        OSStatus err = noErr;
        err = QDRegionToRects (OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&m_numRects);
        if (err == noErr)
        {
            DisposeRegionToRectsUPP (proc);
            proc = NewRegionToRectsUPP (wxMacRegionToRectsSetterCallback);
            m_rects = new wxRect[m_numRects];
            RegionToRectsCallbackData data ;
            data.m_rects = m_rects ;
            data.m_current = 0 ;
            QDRegionToRects (OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&data);
        }
        else
        {
            m_numRects = 0 ;
        }
        DisposeRegionToRectsUPP (proc);
    }
}

/*!
 * 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: 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	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	12	#pragma implementation "region.h"
	13	#endif
	14
	15	#include "wx/wxprec.h"
	16
	17	#include "wx/region.h"
	18	#include "wx/gdicmn.h"
	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	public:
	30	wxRegionRefData()
	31	{
	32	m_macRgn = NewRgn() ;
	33	}
	34
	35	wxRegionRefData(const wxRegionRefData& data)
	36	: wxGDIRefData()
	37	{
	38	m_macRgn = NewRgn() ;
	39	CopyRgn( data.m_macRgn , m_macRgn ) ;
	40	}
	41
	42	~wxRegionRefData()
	43	{
	44	DisposeRgn( m_macRgn ) ;
	45	}
	46	RgnHandle m_macRgn ;
	47	};
	48
	49	#define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn)
	50	#define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn)
	51
	52	//-----------------------------------------------------------------------------
	53	// wxRegion
	54	//-----------------------------------------------------------------------------
	55
	56	/*!
	57	* Create an empty region.
	58	*/
	59	wxRegion::wxRegion()
	60	{
	61	m_refData = new wxRegionRefData;
	62	}
	63
	64	wxRegion::wxRegion(WXHRGN hRegion )
	65	{
	66	m_refData = new wxRegionRefData;
	67	CopyRgn( (RgnHandle) hRegion , (RgnHandle) M_REGION ) ;
	68	}
	69
	70	wxRegion::wxRegion(long x, long y, long w, long h)
	71	{
	72	m_refData = new wxRegionRefData;
	73	SetRectRgn( (RgnHandle) M_REGION , x , y , x+w , y+h ) ;
	74	}
	75
	76	wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
	77	{
	78	m_refData = new wxRegionRefData;
	79	SetRectRgn( (RgnHandle) M_REGION , topLeft.x , topLeft.y , bottomRight.x , bottomRight.y ) ;
	80	}
	81
	82	wxRegion::wxRegion(const wxRect& rect)
	83	{
	84	m_refData = new wxRegionRefData;
	85	SetRectRgn( (RgnHandle) M_REGION , rect.x , rect.y , rect.x+rect.width , rect.y+rect.height ) ;
	86	}
	87
	88	wxRegion::wxRegion(size_t n, const wxPoint *points, int WXUNUSED(fillStyle))
	89	{
	90	m_refData = new wxRegionRefData;
	91
	92	OpenRgn();
	93
	94	wxCoord x1, x2 , y1 , y2 ;
	95	x2 = x1 = points[0].x ;
	96	y2 = y1 = points[0].y ;
	97	::MoveTo(x1,y1);
	98	for (size_t i = 1; i < n; i++)
	99	{
	100	x2 = points[i].x ;
	101	y2 = points[i].y ;
	102	::LineTo(x2, y2);
	103	}
	104	// close the polyline if necessary
	105	if ( x1 != x2 \|\| y1 != y2 )
	106	{
	107	::LineTo(x1,y1 ) ;
	108	}
	109	ClosePoly();
	110	CloseRgn( M_REGION ) ;
	111	}
	112
	113	/*!
	114	* Destroy the region.
	115	*/
	116	wxRegion::~wxRegion()
	117	{
	118	// m_refData unrefed in ~wxObject
	119	}
	120
	121	//-----------------------------------------------------------------------------
	122	//# Modify region
	123	//-----------------------------------------------------------------------------
	124
	125	//! Clear current region
	126	void wxRegion::Clear()
	127	{
	128	UnRef();
	129	}
	130
	131	// Move the region
	132	bool wxRegion::Offset(wxCoord x, wxCoord y)
	133	{
	134	wxCHECK_MSG( M_REGION, false, _T("invalid wxRegion") );
	135
	136	if ( !x && !y )
	137	{
	138	// nothing to do
	139	return true;
	140	}
	141
	142	OffsetRgn( M_REGION , x , y ) ;
	143	return true ;
	144	}
	145
	146
	147	//! Combine rectangle (x, y, w, h) with this.
	148	bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
	149	{
	150	// Don't change shared data
	151	if (!m_refData)
	152	{
	153	m_refData = new wxRegionRefData();
	154	}
	155	else if (m_refData->GetRefCount() > 1)
	156	{
	157	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	158	UnRef();
	159	m_refData = new wxRegionRefData(*ref);
	160	}
	161	RgnHandle rgn = NewRgn() ;
	162	SetRectRgn( rgn , x , y, x+width,y + height ) ;
	163
	164	switch (op)
	165	{
	166	case wxRGN_AND:
	167	SectRgn( M_REGION , rgn , M_REGION ) ;
	168	break ;
	169	case wxRGN_OR:
	170	UnionRgn( M_REGION , rgn , M_REGION ) ;
	171	break ;
	172	case wxRGN_XOR:
	173	XorRgn( M_REGION , rgn , M_REGION ) ;
	174	break ;
	175	case wxRGN_DIFF:
	176	DiffRgn( M_REGION , rgn , M_REGION ) ;
	177	break ;
	178	case wxRGN_COPY:
	179	default:
	180	CopyRgn( rgn ,M_REGION ) ;
	181	break ;
	182	}
	183
	184	DisposeRgn( rgn ) ;
	185
	186	return TRUE;
	187	}
	188
	189	//! Union /e region with this.
	190	bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
	191	{
	192	if (region.Empty())
	193	return FALSE;
	194
	195	// Don't change shared data
	196	if (!m_refData) {
	197	m_refData = new wxRegionRefData();
	198	}
	199	else if (m_refData->GetRefCount() > 1)
	200	{
	201	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	202	UnRef();
	203	m_refData = new wxRegionRefData(*ref);
	204	}
	205
	206	switch (op)
	207	{
	208	case wxRGN_AND:
	209	SectRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	210	break ;
	211	case wxRGN_OR:
	212	UnionRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	213	break ;
	214	case wxRGN_XOR:
	215	XorRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	216	break ;
	217	case wxRGN_DIFF:
	218	DiffRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	219	break ;
	220	case wxRGN_COPY:
	221	default:
	222	CopyRgn( OTHER_M_REGION(region) ,M_REGION ) ;
	223	break ;
	224	}
	225
	226	return TRUE;
	227	}
	228
	229	bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
	230	{
	231	return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
	232	}
	233
	234	//-----------------------------------------------------------------------------
	235	//# Information on region
	236	//-----------------------------------------------------------------------------
	237
	238	// Outer bounds of region
	239	void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
	240	{
	241	if (m_refData)
	242	{
	243	Rect box ;
	244	GetRegionBounds( M_REGION , &box ) ;
	245	x = box.left ;
	246	y = box.top ;
	247	w = box.right - box.left ;
	248	h = box.bottom - box.top ;
	249	}
	250	else
	251	{
	252	x = y = w = h = 0;
	253	}
	254	}
	255
	256	wxRect wxRegion::GetBox() const
	257	{
	258	wxCoord x, y, w, h;
	259	GetBox(x, y, w, h);
	260	return wxRect(x, y, w, h);
	261	}
	262
	263	// Is region empty?
	264	bool wxRegion::Empty() const
	265	{
	266	return EmptyRgn( M_REGION ) ;
	267	}
	268
	269	const WXHRGN wxRegion::GetWXHRGN() const
	270	{
	271	return M_REGION ;
	272	}
	273
	274	//-----------------------------------------------------------------------------
	275	//# Tests
	276	//-----------------------------------------------------------------------------
	277
	278	// Does the region contain the point (x,y)?
	279	wxRegionContain wxRegion::Contains(long x, long y) const
	280	{
	281	if (!m_refData)
	282	return wxOutRegion;
	283
	284	// TODO. Return wxInRegion if within region.
	285	if (0)
	286	return wxInRegion;
	287	return wxOutRegion;
	288	}
	289
	290	// Does the region contain the point pt?
	291	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	292	{
	293	if (!m_refData)
	294	return wxOutRegion;
	295
	296	Point p = { pt.y , pt.x } ;
	297	if (PtInRgn( p , M_REGION ) )
	298	return wxInRegion;
	299
	300	return wxOutRegion;
	301	}
	302
	303	// Does the region contain the rectangle (x, y, w, h)?
	304	wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const
	305	{
	306	if (!m_refData)
	307	return wxOutRegion;
	308
	309	Rect rect = { y , x , y + h , x + w } ;
	310	if (RectInRgn( &rect , M_REGION ) )
	311	return wxInRegion;
	312	else
	313	return wxOutRegion;
	314	}
	315
	316	// Does the region contain the rectangle rect
	317	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	318	{
	319	if (!m_refData)
	320	return wxOutRegion;
	321
	322	long x, y, w, h;
	323	x = rect.x;
	324	y = rect.y;
	325	w = rect.GetWidth();
	326	h = rect.GetHeight();
	327	return Contains(x, y, w, h);
	328	}
	329
	330	///////////////////////////////////////////////////////////////////////////////
	331	// //
	332	// wxRegionIterator //
	333	// //
	334	///////////////////////////////////////////////////////////////////////////////
	335
	336	/*!
	337	* Initialize empty iterator
	338	*/
	339	wxRegionIterator::wxRegionIterator()
	340	: m_current(0), m_numRects(0), m_rects(NULL)
	341	{
	342	}
	343
	344	wxRegionIterator::~wxRegionIterator()
	345	{
	346	if (m_rects) {
	347	delete[] m_rects;
	348	m_rects = NULL;
	349	}
	350	}
	351
	352	wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator)
	353	: wxObject()
	354	, m_current(iterator.m_current)
	355	, m_numRects(0)
	356	, m_rects(NULL)
	357	{
	358	SetRects(iterator.m_numRects, iterator.m_rects);
	359	}
	360
	361	wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator)
	362	{
	363	m_current = iterator.m_current;
	364	SetRects(iterator.m_numRects, iterator.m_rects);
	365	return *this;
	366	}
	367
	368	/*!
	369	* Set iterator rects for region
	370	*/
	371	void wxRegionIterator::SetRects(long numRects, wxRect *rects)
	372	{
	373	if (m_rects) {
	374	delete[] m_rects;
	375	m_rects = NULL;
	376	}
	377	if (rects)
	378	{
	379	int i;
	380	m_rects = new wxRect[numRects];
	381	for (i = 0; i < numRects; i++)
	382	m_rects[i] = rects[i];
	383	}
	384	m_numRects = numRects;
	385	}
	386
	387	/*!
	388	* Initialize iterator for region
	389	*/
	390	wxRegionIterator::wxRegionIterator(const wxRegion& region)
	391	{
	392	m_rects = NULL;
	393
	394	Reset(region);
	395	}
	396
	397	/*!
	398	* Reset iterator for a new /e region.
	399	*/
	400
	401	OSStatus wxMacRegionToRectsCounterCallback (
	402	UInt16 message, RgnHandle region, const Rect rect, void data)
	403	{
	404	long m_numRects = (long) data ;
	405	if ( message == kQDRegionToRectsMsgInit )
	406	{
	407	(*m_numRects) = 0 ;
	408	}
	409	else if (message == kQDRegionToRectsMsgParse)
	410	{
	411	(*m_numRects) += 1 ;
	412	}
	413	return noErr;
	414	}
	415
	416	class RegionToRectsCallbackData
	417	{
	418	public :
	419	wxRect* m_rects ;
	420	long m_current ;
	421	} ;
	422
	423	OSStatus wxMacRegionToRectsSetterCallback (
	424	UInt16 message, RgnHandle region, const Rect rect, void data)
	425	{
	426	if (message == kQDRegionToRectsMsgParse)
	427	{
	428	RegionToRectsCallbackData cb = (RegionToRectsCallbackData) data ;
	429	cb->m_rects[cb->m_current++] = wxRect( rect->left , rect->top , rect->right - rect->left , rect->bottom - rect->top ) ;
	430	}
	431	return noErr;
	432	}
	433
	434	void wxRegionIterator::Reset(const wxRegion& region)
	435	{
	436	m_current = 0;
	437	m_region = region;
	438
	439	if (m_rects) {
	440	delete[] m_rects;
	441	m_rects = NULL;
	442	}
	443
	444	if (m_region.Empty())
	445	m_numRects = 0;
	446	else
	447	{
	448	RegionToRectsUPP proc = NewRegionToRectsUPP (wxMacRegionToRectsCounterCallback);
	449
	450	OSStatus err = noErr;
	451	err = QDRegionToRects (OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&m_numRects);
	452	if (err == noErr)
	453	{
	454	DisposeRegionToRectsUPP (proc);
	455	proc = NewRegionToRectsUPP (wxMacRegionToRectsSetterCallback);
	456	m_rects = new wxRect[m_numRects];
	457	RegionToRectsCallbackData data ;
	458	data.m_rects = m_rects ;
	459	data.m_current = 0 ;
	460	QDRegionToRects (OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&data);
	461	}
	462	else
	463	{
	464	m_numRects = 0 ;
	465	}
	466	DisposeRegionToRectsUPP (proc);
	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	return *this;
	479	}
	480
	481	/*!
	482	* Increment iterator. The rectangle returned is the one before the
	483	* incrementation.
	484	*/
	485	wxRegionIterator wxRegionIterator::operator ++ (int)
	486	{
	487	wxRegionIterator previous(*this);
	488
	489	if (m_current < m_numRects)
	490	++m_current;
	491
	492	return previous;
	493	}
	494
	495	long wxRegionIterator::GetX() const
	496	{
	497	if (m_current < m_numRects)
	498	return m_rects[m_current].x;
	499	return 0;
	500	}
	501
	502	long wxRegionIterator::GetY() const
	503	{
	504	if (m_current < m_numRects)
	505	return m_rects[m_current].y;
	506	return 0;
	507	}
	508
	509	long wxRegionIterator::GetW() const
	510	{
	511	if (m_current < m_numRects)
	512	return m_rects[m_current].width ;
	513	return 0;
	514	}
	515
	516	long wxRegionIterator::GetH() const
	517	{
	518	if (m_current < m_numRects)
	519	return m_rects[m_current].height;
	520	return 0;
	521	}
	522