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
/////////////////////////////////////////////////////////////////////////////

#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;

    // 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 );
    }
}

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
{
    if ( m_refData )
        return EmptyRgn( M_REGION ) ;
    else
        return true ;
}

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?
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 && (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.
 */

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	#include "wx/wxprec.h"
	12
	13	#include "wx/region.h"
	14	#include "wx/gdicmn.h"
	15	#include "wx/mac/uma.h"
	16
	17	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	18	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
	19
	20	//-----------------------------------------------------------------------------
	21	// wxRegionRefData implementation
	22	//-----------------------------------------------------------------------------
	23
	24	class WXDLLEXPORT wxRegionRefData : public wxGDIRefData
	25	{
	26	public:
	27	wxRegionRefData()
	28	{ m_macRgn = NewRgn(); }
	29
	30	wxRegionRefData(const wxRegionRefData& data)
	31	: wxGDIRefData()
	32	{
	33	m_macRgn = NewRgn();
	34	CopyRgn( data.m_macRgn , m_macRgn );
	35	}
	36
	37	~wxRegionRefData()
	38	{ DisposeRgn( m_macRgn ); }
	39
	40	RgnHandle m_macRgn;
	41	};
	42
	43	#define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn)
	44	#define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn)
	45
	46	//-----------------------------------------------------------------------------
	47	// wxRegion
	48	//-----------------------------------------------------------------------------
	49
	50	/*!
	51	* Create an empty region.
	52	*/
	53	wxRegion::wxRegion()
	54	{
	55	m_refData = new wxRegionRefData;
	56	}
	57
	58	wxRegion::wxRegion(WXHRGN hRegion )
	59	{
	60	m_refData = new wxRegionRefData;
	61	CopyRgn( (RgnHandle) hRegion , (RgnHandle) M_REGION ) ;
	62	}
	63
	64	wxRegion::wxRegion(long x, long y, long w, long h)
	65	{
	66	m_refData = new wxRegionRefData;
	67	SetRectRgn( (RgnHandle) M_REGION , x , y , x + w , y + h ) ;
	68	}
	69
	70	wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
	71	{
	72	m_refData = new wxRegionRefData;
	73	SetRectRgn( (RgnHandle) M_REGION , topLeft.x , topLeft.y , bottomRight.x , bottomRight.y ) ;
	74	}
	75
	76	wxRegion::wxRegion(const wxRect& rect)
	77	{
	78	m_refData = new wxRegionRefData;
	79	SetRectRgn( (RgnHandle) M_REGION , rect.x , rect.y , rect.x + rect.width , rect.y + rect.height ) ;
	80	}
	81
	82	wxRegion::wxRegion(size_t n, const wxPoint *points, int WXUNUSED(fillStyle))
	83	{
	84	m_refData = new wxRegionRefData;
	85
	86	// OS X somehow does not collect the region invisibly as before, so sometimes things
	87	// get drawn on screen instead of just being combined into a region, therefore we allocate a temp gworld now
	88
	89	GWorldPtr gWorld = NULL;
	90	GWorldPtr oldWorld;
	91	GDHandle oldGDHandle;
	92	OSStatus err;
	93	Rect destRect = { 0, 0, 1, 1 };
	94
	95	::GetGWorld( &oldWorld, &oldGDHandle );
	96	err = ::NewGWorld( &gWorld, 32, &destRect, NULL, NULL, 0 );
	97	if ( err == noErr )
	98	{
	99	::SetGWorld( gWorld, GetGDevice() );
	100
	101	OpenRgn();
	102
	103	wxCoord x1, x2 , y1 , y2 ;
	104	x2 = x1 = points[0].x ;
	105	y2 = y1 = points[0].y ;
	106
	107	::MoveTo( x1, y1 );
	108	for (size_t i = 1; i < n; i++)
	109	{
	110	x2 = points[i].x ;
	111	y2 = points[i].y ;
	112	::LineTo( x2, y2 );
	113	}
	114
	115	// close the polyline if necessary
	116	if ( x1 != x2 \|\| y1 != y2 )
	117	::LineTo( x1, y1 ) ;
	118
	119	CloseRgn( M_REGION ) ;
	120
	121	::SetGWorld( oldWorld, oldGDHandle );
	122	}
	123	}
	124
	125	wxRegion::~wxRegion()
	126	{
	127	// m_refData unrefed in ~wxObject
	128	}
	129
	130	//-----------------------------------------------------------------------------
	131	//# Modify region
	132	//-----------------------------------------------------------------------------
	133
	134	//! Clear current region
	135	void wxRegion::Clear()
	136	{
	137	UnRef();
	138	}
	139
	140	// Move the region
	141	bool wxRegion::Offset(wxCoord x, wxCoord y)
	142	{
	143	wxCHECK_MSG( M_REGION, false, _T("invalid wxRegion") );
	144
	145	if ( !x && !y )
	146	// nothing to do
	147	return true;
	148
	149	OffsetRgn( M_REGION , x , y ) ;
	150
	151	return true ;
	152	}
	153
	154
	155	//! Combine rectangle (x, y, w, h) with this.
	156	bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
	157	{
	158	// Don't change shared data
	159	if (!m_refData)
	160	{
	161	m_refData = new wxRegionRefData();
	162	}
	163	else if (m_refData->GetRefCount() > 1)
	164	{
	165	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	166	UnRef();
	167	m_refData = new wxRegionRefData( *ref );
	168	}
	169
	170	RgnHandle rgn = NewRgn() ;
	171	SetRectRgn( rgn , x , y, x + width, y + height ) ;
	172
	173	switch (op)
	174	{
	175	case wxRGN_AND:
	176	SectRgn( M_REGION , rgn , M_REGION ) ;
	177	break ;
	178
	179	case wxRGN_OR:
	180	UnionRgn( M_REGION , rgn , M_REGION ) ;
	181	break ;
	182
	183	case wxRGN_XOR:
	184	XorRgn( M_REGION , rgn , M_REGION ) ;
	185	break ;
	186
	187	case wxRGN_DIFF:
	188	DiffRgn( M_REGION , rgn , M_REGION ) ;
	189	break ;
	190
	191	case wxRGN_COPY:
	192	default:
	193	CopyRgn( rgn , M_REGION ) ;
	194	break ;
	195	}
	196
	197	DisposeRgn( rgn ) ;
	198
	199	return true;
	200	}
	201
	202	//! Union /e region with this.
	203	bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
	204	{
	205	if (region.Empty())
	206	return false;
	207
	208	// Don't change shared data
	209	if (!m_refData)
	210	{
	211	m_refData = new wxRegionRefData();
	212	}
	213	else if (m_refData->GetRefCount() > 1)
	214	{
	215	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	216	UnRef();
	217	m_refData = new wxRegionRefData(*ref);
	218	}
	219
	220	switch (op)
	221	{
	222	case wxRGN_AND:
	223	SectRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	224	break ;
	225
	226	case wxRGN_OR:
	227	UnionRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	228	break ;
	229
	230	case wxRGN_XOR:
	231	XorRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	232	break ;
	233
	234	case wxRGN_DIFF:
	235	DiffRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	236	break ;
	237
	238	case wxRGN_COPY:
	239	default:
	240	CopyRgn( OTHER_M_REGION(region) , M_REGION ) ;
	241	break ;
	242	}
	243
	244	return true;
	245	}
	246
	247	bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
	248	{
	249	return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
	250	}
	251
	252	//-----------------------------------------------------------------------------
	253	//# Information on region
	254	//-----------------------------------------------------------------------------
	255
	256	// Outer bounds of region
	257	void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
	258	{
	259	if (m_refData)
	260	{
	261	Rect box ;
	262	GetRegionBounds( M_REGION , &box ) ;
	263	x = box.left ;
	264	y = box.top ;
	265	w = box.right - box.left ;
	266	h = box.bottom - box.top ;
	267	}
	268	else
	269	{
	270	x = y = w = h = 0;
	271	}
	272	}
	273
	274	wxRect wxRegion::GetBox() const
	275	{
	276	wxCoord x, y, w, h;
	277	GetBox(x, y, w, h);
	278
	279	return wxRect(x, y, w, h);
	280	}
	281
	282	// Is region empty?
	283	bool wxRegion::Empty() const
	284	{
	285	if ( m_refData )
	286	return EmptyRgn( M_REGION ) ;
	287	else
	288	return true ;
	289	}
	290
	291	const WXHRGN wxRegion::GetWXHRGN() const
	292	{
	293	return M_REGION ;
	294	}
	295
	296	//-----------------------------------------------------------------------------
	297	//# Tests
	298	//-----------------------------------------------------------------------------
	299
	300	// Does the region contain the point (x,y)?
	301	wxRegionContain wxRegion::Contains(long x, long y) const
	302	{
	303	if (!m_refData)
	304	return wxOutRegion;
	305
	306	// TODO. Return wxInRegion if within region.
	307	// if (0)
	308	// return wxInRegion;
	309
	310	return wxOutRegion;
	311	}
	312
	313	// Does the region contain the point?
	314	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	315	{
	316	if (!m_refData)
	317	return wxOutRegion;
	318
	319	Point p = { pt.y , pt.x } ;
	320	if (PtInRgn( p , M_REGION ) )
	321	return wxInRegion;
	322
	323	return wxOutRegion;
	324	}
	325
	326	// Does the region contain the rectangle (x, y, w, h)?
	327	wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const
	328	{
	329	if (!m_refData)
	330	return wxOutRegion;
	331
	332	Rect rect = { y , x , y + h , x + w } ;
	333	if (RectInRgn( &rect , M_REGION ) )
	334	return wxInRegion;
	335	else
	336	return wxOutRegion;
	337	}
	338
	339	// Does the region contain the rectangle rect
	340	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	341	{
	342	if (!m_refData)
	343	return wxOutRegion;
	344
	345	long x, y, w, h;
	346
	347	x = rect.x;
	348	y = rect.y;
	349	w = rect.GetWidth();
	350	h = rect.GetHeight();
	351
	352	return Contains(x, y, w, h);
	353	}
	354
	355	///////////////////////////////////////////////////////////////////////////////
	356	// //
	357	// wxRegionIterator //
	358	// //
	359	///////////////////////////////////////////////////////////////////////////////
	360
	361	/*!
	362	* Initialize empty iterator
	363	*/
	364	wxRegionIterator::wxRegionIterator()
	365	: m_current(0), m_numRects(0), m_rects(NULL)
	366	{
	367	}
	368
	369	wxRegionIterator::~wxRegionIterator()
	370	{
	371	if (m_rects)
	372	{
	373	delete [] m_rects;
	374	m_rects = NULL;
	375	}
	376	}
	377
	378	wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator)
	379	: wxObject()
	380	, m_current(iterator.m_current)
	381	, m_numRects(0)
	382	, m_rects(NULL)
	383	{
	384	SetRects(iterator.m_numRects, iterator.m_rects);
	385	}
	386
	387	wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator)
	388	{
	389	m_current = iterator.m_current;
	390	SetRects(iterator.m_numRects, iterator.m_rects);
	391
	392	return *this;
	393	}
	394
	395	/*!
	396	* Set iterator rects for region
	397	*/
	398	void wxRegionIterator::SetRects(long numRects, wxRect *rects)
	399	{
	400	if (m_rects)
	401	{
	402	delete [] m_rects;
	403	m_rects = NULL;
	404	}
	405
	406	if (rects && (numRects > 0))
	407	{
	408	int i;
	409
	410	m_rects = new wxRect[numRects];
	411	for (i = 0; i < numRects; i++)
	412	m_rects[i] = rects[i];
	413	}
	414
	415	m_numRects = numRects;
	416	}
	417
	418	/*!
	419	* Initialize iterator for region
	420	*/
	421	wxRegionIterator::wxRegionIterator(const wxRegion& region)
	422	{
	423	m_rects = NULL;
	424
	425	Reset(region);
	426	}
	427
	428	/*!
	429	* Reset iterator for a new /e region.
	430	*/
	431
	432	OSStatus wxMacRegionToRectsCounterCallback(
	433	UInt16 message, RgnHandle region, const Rect rect, void data )
	434	{
	435	long m_numRects = (long) data ;
	436	if ( message == kQDRegionToRectsMsgInit )
	437	{
	438	(*m_numRects) = 0 ;
	439	}
	440	else if (message == kQDRegionToRectsMsgParse)
	441	{
	442	(*m_numRects) += 1 ;
	443	}
	444
	445	return noErr;
	446	}
	447
	448	class RegionToRectsCallbackData
	449	{
	450	public :
	451	wxRect* m_rects ;
	452	long m_current ;
	453	};
	454
	455	OSStatus wxMacRegionToRectsSetterCallback(
	456	UInt16 message, RgnHandle region, const Rect rect, void data )
	457	{
	458	if (message == kQDRegionToRectsMsgParse)
	459	{
	460	RegionToRectsCallbackData cb = (RegionToRectsCallbackData) data ;
	461	cb->m_rects[cb->m_current++] = wxRect( rect->left , rect->top , rect->right - rect->left , rect->bottom - rect->top ) ;
	462	}
	463
	464	return noErr;
	465	}
	466
	467	void wxRegionIterator::Reset(const wxRegion& region)
	468	{
	469	m_current = 0;
	470	m_region = region;
	471
	472	if (m_rects)
	473	{
	474	delete [] m_rects;
	475	m_rects = NULL;
	476	}
	477
	478	if (m_region.Empty())
	479	{
	480	m_numRects = 0;
	481	}
	482	else
	483	{
	484	RegionToRectsUPP proc = NewRegionToRectsUPP( wxMacRegionToRectsCounterCallback );
	485
	486	OSStatus err = noErr;
	487	err = QDRegionToRects (OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&m_numRects);
	488	if (err == noErr)
	489	{
	490	DisposeRegionToRectsUPP (proc);
	491	proc = NewRegionToRectsUPP (wxMacRegionToRectsSetterCallback);
	492	m_rects = new wxRect[m_numRects];
	493	RegionToRectsCallbackData data ;
	494	data.m_rects = m_rects ;
	495	data.m_current = 0 ;
	496	QDRegionToRects( OTHER_M_REGION( region ) , kQDParseRegionFromTopLeft, proc, (void*)&data );
	497	}
	498	else
	499	{
	500	m_numRects = 0;
	501	}
	502
	503	DisposeRegionToRectsUPP( proc );
	504	}
	505	}
	506
	507	/*!
	508	* Increment iterator. The rectangle returned is the one after the
	509	* incrementation.
	510	*/
	511	wxRegionIterator& wxRegionIterator::operator ++ ()
	512	{
	513	if (m_current < m_numRects)
	514	++m_current;
	515
	516	return *this;
	517	}
	518
	519	/*!
	520	* Increment iterator. The rectangle returned is the one before the
	521	* incrementation.
	522	*/
	523	wxRegionIterator wxRegionIterator::operator ++ (int)
	524	{
	525	wxRegionIterator previous(*this);
	526
	527	if (m_current < m_numRects)
	528	++m_current;
	529
	530	return previous;
	531	}
	532
	533	long wxRegionIterator::GetX() const
	534	{
	535	if (m_current < m_numRects)
	536	return m_rects[m_current].x;
	537
	538	return 0;
	539	}
	540
	541	long wxRegionIterator::GetY() const
	542	{
	543	if (m_current < m_numRects)
	544	return m_rects[m_current].y;
	545
	546	return 0;
	547	}
	548
	549	long wxRegionIterator::GetW() const
	550	{
	551	if (m_current < m_numRects)
	552	return m_rects[m_current].width ;
	553
	554	return 0;
	555	}
	556
	557	long wxRegionIterator::GetH() const
	558	{
	559	if (m_current < m_numRects)
	560	return m_rects[m_current].height;
	561
	562	return 0;
	563	}
	564