src/osx/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/osx/private.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(wxCFRef<HIShapeRef> &region)
    {
        m_macRgn.reset( HIShapeCreateMutableCopy(region) );
    }

    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 )
{
    wxCFRef< HIShapeRef > shape( (HIShapeRef) hRegion );
    m_refData = new wxRegionRefData(shape);
}

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, wxPolygonFillMode WXUNUSED(fillStyle))
{
    wxUnusedVar(n);
    wxUnusedVar(points);

#if 0
    // no non-QD APIs available
    // TODO : remove ?
    // 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 ) ;

        RgnHandle tempRgn = NewRgn();
        CloseRgn( tempRgn ) ;

        ::SetGWorld( oldWorld, oldGDHandle );
        wxCFRef<HIShapeRef> tempShape( HIShapeCreateWithQDRgn(tempRgn ) );
        m_refData = new wxRegionRefData(tempShape);
        DisposeRgn( tempRgn );
    }
    else
    {
        m_refData = new wxRegionRefData;
    }
#else
    wxFAIL_MSG( "not implemented" );
    m_refData = NULL;
#endif
}

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

wxGDIRefData *wxRegion::CreateGDIRefData() const
{
    return new wxRegionRefData;
}

wxGDIRefData *wxRegion::CloneGDIRefData(const wxGDIRefData *data) const
{
    return new wxRegionRefData(*static_cast<const wxRegionRefData *>(data));
}

//-----------------------------------------------------------------------------
//# 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 = static_cast<int>(box.origin.x);
        y = static_cast<int>(box.origin.y);
        w = static_cast<int>(box.size.width);
        h = static_cast<int>(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.
 */

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

#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5

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;
}

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

#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5

OSStatus wxOSXRegionToRectsCounterCallback(
    int message, HIShapeRef WXUNUSED(region), const CGRect *WXUNUSED(rect), void *data )
{
    long *m_numRects = (long*) data ;
    if ( message == kHIShapeEnumerateInit )
    {
        (*m_numRects) = 0 ;
    }
    else if (message == kHIShapeEnumerateRect)
    {
        (*m_numRects) += 1 ;
    }

    return noErr;
}

OSStatus wxOSXRegionToRectsSetterCallback(
    int message, HIShapeRef WXUNUSED(region), const CGRect *rect, void *data )
{
    if (message == kHIShapeEnumerateRect)
    {
        RegionToRectsCallbackData *cb = (RegionToRectsCallbackData*) data ;
        cb->m_rects[cb->m_current++] = wxRect( rect->origin.x , rect->origin.y , rect->size.width , rect->size.height ) ;
    }

    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
    {
#if 0
        // fallback code in case we ever need it again
        // 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();
#endif

#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
        if ( HIShapeEnumerate != NULL )
        {
            OSStatus err = HIShapeEnumerate (OTHER_M_REGION(region), kHIShapeParseFromTopLeft, wxOSXRegionToRectsCounterCallback,
                (void*)&m_numRects);
            if (err == noErr)
            {
                m_rects = new wxRect[m_numRects];
                RegionToRectsCallbackData data ;
                data.m_rects = m_rects ;
                data.m_current = 0 ;
                HIShapeEnumerate( OTHER_M_REGION(region), kHIShapeParseFromTopLeft, wxOSXRegionToRectsSetterCallback,
                    (void*)&data );
            }
            else
            {
                m_numRects = 0;
            }
        }
        else
#endif
        {
#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
            OSStatus err = noErr;
            RgnHandle rgn = NewRgn();
            HIShapeGetAsQDRgn(OTHER_M_REGION(region), rgn);

            err = QDRegionToRects (rgn, kQDParseRegionFromTopLeft, wxMacRegionToRectsCounterCallback
                , (void*)&m_numRects);
            if (err == noErr)
            {
                m_rects = new wxRect[m_numRects];
                RegionToRectsCallbackData data ;
                data.m_rects = m_rects ;
                data.m_current = 0 ;
                QDRegionToRects( rgn , kQDParseRegionFromTopLeft, wxMacRegionToRectsSetterCallback,
                    (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/osx/private.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(wxCFRef<HIShapeRef> &region)
	37	{
	38	m_macRgn.reset( HIShapeCreateMutableCopy(region) );
	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	wxCFRef< HIShapeRef > shape( (HIShapeRef) hRegion );
	79	m_refData = new wxRegionRefData(shape);
	80	}
	81
	82	wxRegion::wxRegion(long x, long y, long w, long h)
	83	{
	84	m_refData = new wxRegionRefData(x , y , w , h );
	85	}
	86
	87	wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
	88	{
	89	m_refData = new wxRegionRefData(topLeft.x , topLeft.y ,
	90	topLeft.x - bottomRight.x ,
	91	topLeft.y - bottomRight.y);
	92	}
	93
	94	wxRegion::wxRegion(const wxRect& rect)
	95	{
	96	m_refData = new wxRegionRefData(rect.x , rect.y , rect.width , rect.height);
	97	}
	98
	99	wxRegion::wxRegion(size_t n, const wxPoint *points, wxPolygonFillMode WXUNUSED(fillStyle))
	100	{
	101	wxUnusedVar(n);
	102	wxUnusedVar(points);
	103
	104	#if 0
	105	// no non-QD APIs available
	106	// TODO : remove ?
	107	// OS X somehow does not collect the region invisibly as before, so sometimes things
	108	// get drawn on screen instead of just being combined into a region, therefore we allocate a temp gworld now
	109
	110	GWorldPtr gWorld = NULL;
	111	GWorldPtr oldWorld;
	112	GDHandle oldGDHandle;
	113	OSStatus err;
	114	Rect destRect = { 0, 0, 1, 1 };
	115
	116	::GetGWorld( &oldWorld, &oldGDHandle );
	117	err = ::NewGWorld( &gWorld, 32, &destRect, NULL, NULL, 0 );
	118	if ( err == noErr )
	119	{
	120	::SetGWorld( gWorld, GetGDevice() );
	121
	122	OpenRgn();
	123
	124	wxCoord x1, x2 , y1 , y2 ;
	125	x2 = x1 = points[0].x ;
	126	y2 = y1 = points[0].y ;
	127
	128	::MoveTo( x1, y1 );
	129	for (size_t i = 1; i < n; i++)
	130	{
	131	x2 = points[i].x ;
	132	y2 = points[i].y ;
	133	::LineTo( x2, y2 );
	134	}
	135
	136	// close the polyline if necessary
	137	if ( x1 != x2 \|\| y1 != y2 )
	138	::LineTo( x1, y1 ) ;
	139
	140	RgnHandle tempRgn = NewRgn();
	141	CloseRgn( tempRgn ) ;
	142
	143	::SetGWorld( oldWorld, oldGDHandle );
	144	wxCFRef<HIShapeRef> tempShape( HIShapeCreateWithQDRgn(tempRgn ) );
	145	m_refData = new wxRegionRefData(tempShape);
	146	DisposeRgn( tempRgn );
	147	}
	148	else
	149	{
	150	m_refData = new wxRegionRefData;
	151	}
	152	#else
	153	wxFAIL_MSG( "not implemented" );
	154	m_refData = NULL;
	155	#endif
	156	}
	157
	158	wxRegion::~wxRegion()
	159	{
	160	// m_refData unrefed in ~wxObject
	161	}
	162
	163	wxGDIRefData *wxRegion::CreateGDIRefData() const
	164	{
	165	return new wxRegionRefData;
	166	}
	167
	168	wxGDIRefData wxRegion::CloneGDIRefData(const wxGDIRefData data) const
	169	{
	170	return new wxRegionRefData(static_cast<const wxRegionRefData >(data));
	171	}
	172
	173	//-----------------------------------------------------------------------------
	174	//# Modify region
	175	//-----------------------------------------------------------------------------
	176
	177	//! Clear current region
	178	void wxRegion::Clear()
	179	{
	180	UnRef();
	181	}
	182
	183	// Move the region
	184	bool wxRegion::DoOffset(wxCoord x, wxCoord y)
	185	{
	186	wxCHECK_MSG( M_REGION, false, _T("invalid wxRegion") );
	187
	188	if ( !x && !y )
	189	// nothing to do
	190	return true;
	191
	192	verify_noerr( HIShapeOffset( M_REGION , x , y ) ) ;
	193
	194	return true ;
	195	}
	196
	197
	198	//! Union /e region with this.
	199	bool wxRegion::DoCombine(const wxRegion& region, wxRegionOp op)
	200	{
	201	wxCHECK_MSG( region.Ok(), false, _T("invalid wxRegion") );
	202
	203	// Don't change shared data
	204	if (!m_refData)
	205	{
	206	m_refData = new wxRegionRefData();
	207	}
	208	else if (m_refData->GetRefCount() > 1)
	209	{
	210	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	211	UnRef();
	212	m_refData = new wxRegionRefData(*ref);
	213	}
	214
	215	switch (op)
	216	{
	217	case wxRGN_AND:
	218	verify_noerr( HIShapeIntersect( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
	219	break ;
	220
	221	case wxRGN_OR:
	222	verify_noerr( HIShapeUnion( M_REGION , OTHER_M_REGION(region) , M_REGION ) );
	223	break ;
	224
	225	case wxRGN_XOR:
	226	{
	227	// XOR is defined as the difference between union and intersection
	228	wxCFRef< HIShapeRef > unionshape( HIShapeCreateUnion( M_REGION , OTHER_M_REGION(region) ) );
	229	wxCFRef< HIShapeRef > intersectionshape( HIShapeCreateIntersection( M_REGION , OTHER_M_REGION(region) ) );
	230	verify_noerr( HIShapeDifference( unionshape, intersectionshape, M_REGION ) );
	231	}
	232	break ;
	233
	234	case wxRGN_DIFF:
	235	verify_noerr( HIShapeDifference( M_REGION , OTHER_M_REGION(region) , M_REGION ) ) ;
	236	break ;
	237
	238	case wxRGN_COPY:
	239	default:
	240	M_REGION.reset( HIShapeCreateMutableCopy( OTHER_M_REGION(region) ) );
	241	break ;
	242	}
	243
	244	return true;
	245	}
	246
	247	//-----------------------------------------------------------------------------
	248	//# Information on region
	249	//-----------------------------------------------------------------------------
	250
	251	bool wxRegion::DoIsEqual(const wxRegion& WXUNUSED(region)) const
	252	{
	253	wxFAIL_MSG( _T("not implemented") );
	254
	255	return false;
	256	}
	257
	258	// Outer bounds of region
	259	bool wxRegion::DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
	260	{
	261	if (m_refData)
	262	{
	263	CGRect box ;
	264	HIShapeGetBounds( M_REGION , &box ) ;
	265	x = static_cast<int>(box.origin.x);
	266	y = static_cast<int>(box.origin.y);
	267	w = static_cast<int>(box.size.width);
	268	h = static_cast<int>(box.size.height);
	269
	270	return true;
	271	}
	272	else
	273	{
	274	x = y = w = h = 0;
	275
	276	return false;
	277	}
	278	}
	279
	280	// Is region empty?
	281	bool wxRegion::IsEmpty() const
	282	{
	283	if ( m_refData )
	284	return HIShapeIsEmpty( M_REGION ) ;
	285	else
	286	return true ;
	287	}
	288
	289	const WXHRGN wxRegion::GetWXHRGN() const
	290	{
	291	return M_REGION ;
	292	}
	293
	294	//-----------------------------------------------------------------------------
	295	//# Tests
	296	//-----------------------------------------------------------------------------
	297
	298	// Does the region contain the point?
	299	wxRegionContain wxRegion::DoContainsPoint(wxCoord x, wxCoord y) const
	300	{
	301	if (!m_refData)
	302	return wxOutRegion;
	303
	304	CGPoint p = { y , x } ;
	305	if (HIShapeContainsPoint( M_REGION , &p ) )
	306	return wxInRegion;
	307
	308	return wxOutRegion;
	309	}
	310
	311	// Does the region contain the rectangle (x, y, w, h)?
	312	wxRegionContain wxRegion::DoContainsRect(const wxRect& r) const
	313	{
	314	if (!m_refData)
	315	return wxOutRegion;
	316
	317	CGRect rect = CGRectMake(r.x,r.y,r.width,r.height);
	318	wxCFRef<HIShapeRef> rectshape(HIShapeCreateWithRect(&rect));
	319	wxCFRef<HIShapeRef> intersect(HIShapeCreateIntersection(rectshape,M_REGION));
	320	CGRect bounds;
	321	HIShapeGetBounds(intersect, &bounds);
	322
	323	if ( HIShapeIsRectangular(intersect) && CGRectEqualToRect(rect,bounds) )
	324	return wxInRegion;
	325	else if ( HIShapeIsEmpty( intersect ) )
	326	return wxOutRegion;
	327	else
	328	return wxPartRegion;
	329	}
	330
	331	///////////////////////////////////////////////////////////////////////////////
	332	// //
	333	// wxRegionIterator //
	334	// //
	335	///////////////////////////////////////////////////////////////////////////////
	336
	337	/*!
	338	* Initialize empty iterator
	339	*/
	340	wxRegionIterator::wxRegionIterator()
	341	: m_current(0), m_numRects(0), m_rects(NULL)
	342	{
	343	}
	344
	345	wxRegionIterator::~wxRegionIterator()
	346	{
	347	if (m_rects)
	348	{
	349	delete [] m_rects;
	350	m_rects = NULL;
	351	}
	352	}
	353
	354	wxRegionIterator::wxRegionIterator(const wxRegionIterator& iterator)
	355	: wxObject()
	356	, m_current(iterator.m_current)
	357	, m_numRects(0)
	358	, m_rects(NULL)
	359	{
	360	SetRects(iterator.m_numRects, iterator.m_rects);
	361	}
	362
	363	wxRegionIterator& wxRegionIterator::operator=(const wxRegionIterator& iterator)
	364	{
	365	m_current = iterator.m_current;
	366	SetRects(iterator.m_numRects, iterator.m_rects);
	367
	368	return *this;
	369	}
	370
	371	/*!
	372	* Set iterator rects for region
	373	*/
	374	void wxRegionIterator::SetRects(long numRects, wxRect *rects)
	375	{
	376	if (m_rects)
	377	{
	378	delete [] m_rects;
	379	m_rects = NULL;
	380	}
	381
	382	if (rects && (numRects > 0))
	383	{
	384	int i;
	385
	386	m_rects = new wxRect[numRects];
	387	for (i = 0; i < numRects; i++)
	388	m_rects[i] = rects[i];
	389	}
	390
	391	m_numRects = numRects;
	392	}
	393
	394	/*!
	395	* Initialize iterator for region
	396	*/
	397	wxRegionIterator::wxRegionIterator(const wxRegion& region)
	398	{
	399	m_rects = NULL;
	400
	401	Reset(region);
	402	}
	403
	404	/*!
	405	* Reset iterator for a new /e region.
	406	*/
	407
	408	class RegionToRectsCallbackData
	409	{
	410	public :
	411	wxRect* m_rects ;
	412	long m_current ;
	413	};
	414
	415	#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
	416
	417	OSStatus wxMacRegionToRectsCounterCallback(
	418	UInt16 message, RgnHandle WXUNUSED(region), const Rect WXUNUSED(rect), void data )
	419	{
	420	long m_numRects = (long) data ;
	421	if ( message == kQDRegionToRectsMsgInit )
	422	{
	423	(*m_numRects) = 0 ;
	424	}
	425	else if (message == kQDRegionToRectsMsgParse)
	426	{
	427	(*m_numRects) += 1 ;
	428	}
	429
	430	return noErr;
	431	}
	432
	433	OSStatus wxMacRegionToRectsSetterCallback(
	434	UInt16 message, RgnHandle WXUNUSED(region), const Rect rect, void data )
	435	{
	436	if (message == kQDRegionToRectsMsgParse)
	437	{
	438	RegionToRectsCallbackData cb = (RegionToRectsCallbackData) data ;
	439	cb->m_rects[cb->m_current++] = wxRect( rect->left , rect->top , rect->right - rect->left , rect->bottom - rect->top ) ;
	440	}
	441
	442	return noErr;
	443	}
	444
	445	#endif
	446
	447	#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
	448
	449	OSStatus wxOSXRegionToRectsCounterCallback(
	450	int message, HIShapeRef WXUNUSED(region), const CGRect WXUNUSED(rect), void data )
	451	{
	452	long m_numRects = (long) data ;
	453	if ( message == kHIShapeEnumerateInit )
	454	{
	455	(*m_numRects) = 0 ;
	456	}
	457	else if (message == kHIShapeEnumerateRect)
	458	{
	459	(*m_numRects) += 1 ;
	460	}
	461
	462	return noErr;
	463	}
	464
	465	OSStatus wxOSXRegionToRectsSetterCallback(
	466	int message, HIShapeRef WXUNUSED(region), const CGRect rect, void data )
	467	{
	468	if (message == kHIShapeEnumerateRect)
	469	{
	470	RegionToRectsCallbackData cb = (RegionToRectsCallbackData) data ;
	471	cb->m_rects[cb->m_current++] = wxRect( rect->origin.x , rect->origin.y , rect->size.width , rect->size.height ) ;
	472	}
	473
	474	return noErr;
	475	}
	476
	477	#endif
	478
	479	void wxRegionIterator::Reset(const wxRegion& region)
	480	{
	481	m_current = 0;
	482	m_region = region;
	483
	484	if (m_rects)
	485	{
	486	delete [] m_rects;
	487	m_rects = NULL;
	488	}
	489
	490	if (m_region.IsEmpty())
	491	{
	492	m_numRects = 0;
	493	}
	494	else
	495	{
	496	#if 0
	497	// fallback code in case we ever need it again
	498	// copying this to a path and dissecting the path would be an option
	499	m_numRects = 1;
	500	m_rects = new wxRect[m_numRects];
	501	m_rects[0] = m_region.GetBox();
	502	#endif
	503
	504	#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
	505	if ( HIShapeEnumerate != NULL )
	506	{
	507	OSStatus err = HIShapeEnumerate (OTHER_M_REGION(region), kHIShapeParseFromTopLeft, wxOSXRegionToRectsCounterCallback,
	508	(void*)&m_numRects);
	509	if (err == noErr)
	510	{
	511	m_rects = new wxRect[m_numRects];
	512	RegionToRectsCallbackData data ;
	513	data.m_rects = m_rects ;
	514	data.m_current = 0 ;
	515	HIShapeEnumerate( OTHER_M_REGION(region), kHIShapeParseFromTopLeft, wxOSXRegionToRectsSetterCallback,
	516	(void*)&data );
	517	}
	518	else
	519	{
	520	m_numRects = 0;
	521	}
	522	}
	523	else
	524	#endif
	525	{
	526	#if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_5
	527	OSStatus err = noErr;
	528	RgnHandle rgn = NewRgn();
	529	HIShapeGetAsQDRgn(OTHER_M_REGION(region), rgn);
	530
	531	err = QDRegionToRects (rgn, kQDParseRegionFromTopLeft, wxMacRegionToRectsCounterCallback
	532	, (void*)&m_numRects);
	533	if (err == noErr)
	534	{
	535	m_rects = new wxRect[m_numRects];
	536	RegionToRectsCallbackData data ;
	537	data.m_rects = m_rects ;
	538	data.m_current = 0 ;
	539	QDRegionToRects( rgn , kQDParseRegionFromTopLeft, wxMacRegionToRectsSetterCallback,
	540	(void*)&data );
	541	}
	542	else
	543	{
	544	m_numRects = 0;
	545	}
	546	DisposeRgn( rgn );
	547	#endif
	548	}
	549	}
	550	}
	551
	552	/*!
	553	* Increment iterator. The rectangle returned is the one after the
	554	* incrementation.
	555	*/
	556	wxRegionIterator& wxRegionIterator::operator ++ ()
	557	{
	558	if (m_current < m_numRects)
	559	++m_current;
	560
	561	return *this;
	562	}
	563
	564	/*!
	565	* Increment iterator. The rectangle returned is the one before the
	566	* incrementation.
	567	*/
	568	wxRegionIterator wxRegionIterator::operator ++ (int)
	569	{
	570	wxRegionIterator previous(*this);
	571
	572	if (m_current < m_numRects)
	573	++m_current;
	574
	575	return previous;
	576	}
	577
	578	long wxRegionIterator::GetX() const
	579	{
	580	if (m_current < m_numRects)
	581	return m_rects[m_current].x;
	582
	583	return 0;
	584	}
	585
	586	long wxRegionIterator::GetY() const
	587	{
	588	if (m_current < m_numRects)
	589	return m_rects[m_current].y;
	590
	591	return 0;
	592	}
	593
	594	long wxRegionIterator::GetW() const
	595	{
	596	if (m_current < m_numRects)
	597	return m_rects[m_current].width ;
	598
	599	return 0;
	600	}
	601
	602	long wxRegionIterator::GetH() const
	603	{
	604	if (m_current < m_numRects)
	605	return m_rects[m_current].height;
	606
	607	return 0;
	608	}