src/mac/region.cpp

/////////////////////////////////////////////////////////////////////////////
// File:      region.cpp
// Purpose:   Region class
// Author:    Markus Holzem/Julian Smart/AUTHOR
// Created:   Fri Oct 24 10:46:34 MET 1997
// RCS-ID:	  $Id$
// Copyright: (c) 1997 Markus Holzem/Julian Smart/AUTHOR
// Licence:   wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "region.h"
#endif

#include "wx/region.h"
#include "wx/gdicmn.h"
#include "wx/mac/uma.h"

#if !USE_SHARED_LIBRARY
	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
#endif

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

class WXDLLEXPORT wxRegionRefData : public wxGDIRefData {
public:
	wxRegionRefData()
	{
		m_macRgn = NewRgn() ;
	}

	wxRegionRefData(const wxRegionRefData& data)
	{
		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( hRegion , M_REGION ) ;
}

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

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

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

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

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

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

//! 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;
}

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

	Reset(region);
}

/*!
 * Reset iterator for a new /e region.
 */
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
    {
    	// we cannot dissolve it into rects on mac
        m_rects = new wxRect[1];
		Rect rect ;
		GetRegionBounds( OTHER_M_REGION( region ) , &rect ) ;
        m_rects[0].x = rect.left;
        m_rects[0].y = rect.top;
        m_rects[0].width = rect.right - rect.left;
        m_rects[0].height = rect.bottom - rect.top;
        m_numRects = 1;
    }
}

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

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

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: Markus Holzem/Julian Smart/AUTHOR
	5	// Created: Fri Oct 24 10:46:34 MET 1997
	6	// RCS-ID: $Id$
	7	// Copyright: (c) 1997 Markus Holzem/Julian Smart/AUTHOR
	8	// Licence: wxWindows licence
	9	/////////////////////////////////////////////////////////////////////////////
	10
	11	#ifdef __GNUG__
	12	#pragma implementation "region.h"
	13	#endif
	14
	15	#include "wx/region.h"
	16	#include "wx/gdicmn.h"
	17	#include "wx/mac/uma.h"
	18
	19	#if !USE_SHARED_LIBRARY
	20	IMPLEMENT_DYNAMIC_CLASS(wxRegion, wxGDIObject)
	21	IMPLEMENT_DYNAMIC_CLASS(wxRegionIterator, wxObject)
	22	#endif
	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	{
	37	m_macRgn = NewRgn() ;
	38	CopyRgn( data.m_macRgn , m_macRgn ) ;
	39	}
	40
	41	~wxRegionRefData()
	42	{
	43	DisposeRgn( m_macRgn ) ;
	44	}
	45	RgnHandle m_macRgn ;
	46	};
	47
	48	#define M_REGION (((wxRegionRefData*)m_refData)->m_macRgn)
	49	#define OTHER_M_REGION(a) (((wxRegionRefData*)(a.m_refData))->m_macRgn)
	50
	51	//-----------------------------------------------------------------------------
	52	// wxRegion
	53	//-----------------------------------------------------------------------------
	54
	55	/*!
	56	* Create an empty region.
	57	*/
	58	wxRegion::wxRegion()
	59	{
	60	m_refData = new wxRegionRefData;
	61	}
	62
	63	wxRegion::wxRegion(WXHRGN hRegion )
	64	{
	65	m_refData = new wxRegionRefData;
	66	CopyRgn( hRegion , M_REGION ) ;
	67	}
	68
	69	wxRegion::wxRegion(long x, long y, long w, long h)
	70	{
	71	m_refData = new wxRegionRefData;
	72	SetRectRgn( M_REGION , x , y , x+w , y+h ) ;
	73	}
	74
	75	wxRegion::wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight)
	76	{
	77	m_refData = new wxRegionRefData;
	78	SetRectRgn( M_REGION , topLeft.x , topLeft.y , bottomRight.x , bottomRight.y ) ;
	79	}
	80
	81	wxRegion::wxRegion(const wxRect& rect)
	82	{
	83	m_refData = new wxRegionRefData;
	84	SetRectRgn( M_REGION , rect.x , rect.y , rect.x+rect.width , rect.y+rect.height ) ;
	85	}
	86
	87	/*!
	88	* Destroy the region.
	89	*/
	90	wxRegion::~wxRegion()
	91	{
	92	// m_refData unrefed in ~wxObject
	93	}
	94
	95	//-----------------------------------------------------------------------------
	96	//# Modify region
	97	//-----------------------------------------------------------------------------
	98
	99	//! Clear current region
	100	void wxRegion::Clear()
	101	{
	102	UnRef();
	103	}
	104
	105	//! Combine rectangle (x, y, w, h) with this.
	106	bool wxRegion::Combine(long x, long y, long width, long height, wxRegionOp op)
	107	{
	108	// Don't change shared data
	109	if (!m_refData)
	110	{
	111	m_refData = new wxRegionRefData();
	112	}
	113	else if (m_refData->GetRefCount() > 1)
	114	{
	115	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	116	UnRef();
	117	m_refData = new wxRegionRefData(*ref);
	118	}
	119	RgnHandle rgn = NewRgn() ;
	120	SetRectRgn( rgn , x , y, x+width,y + height ) ;
	121
	122	switch (op)
	123	{
	124	case wxRGN_AND:
	125	SectRgn( M_REGION , rgn , M_REGION ) ;
	126	break ;
	127	case wxRGN_OR:
	128	UnionRgn( M_REGION , rgn , M_REGION ) ;
	129	break ;
	130	case wxRGN_XOR:
	131	XorRgn( M_REGION , rgn , M_REGION ) ;
	132	break ;
	133	case wxRGN_DIFF:
	134	DiffRgn( M_REGION , rgn , M_REGION ) ;
	135	break ;
	136	case wxRGN_COPY:
	137	default:
	138	CopyRgn( rgn ,M_REGION ) ;
	139	break ;
	140	}
	141
	142	DisposeRgn( rgn ) ;
	143
	144	return TRUE;
	145	}
	146
	147	//! Union /e region with this.
	148	bool wxRegion::Combine(const wxRegion& region, wxRegionOp op)
	149	{
	150	if (region.Empty())
	151	return FALSE;
	152
	153	// Don't change shared data
	154	if (!m_refData) {
	155	m_refData = new wxRegionRefData();
	156	}
	157	else if (m_refData->GetRefCount() > 1)
	158	{
	159	wxRegionRefData* ref = (wxRegionRefData*)m_refData;
	160	UnRef();
	161	m_refData = new wxRegionRefData(*ref);
	162	}
	163
	164	switch (op)
	165	{
	166	case wxRGN_AND:
	167	SectRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	168	break ;
	169	case wxRGN_OR:
	170	UnionRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	171	break ;
	172	case wxRGN_XOR:
	173	XorRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	174	break ;
	175	case wxRGN_DIFF:
	176	DiffRgn( M_REGION , OTHER_M_REGION(region) , M_REGION ) ;
	177	break ;
	178	case wxRGN_COPY:
	179	default:
	180	CopyRgn( OTHER_M_REGION(region) ,M_REGION ) ;
	181	break ;
	182	}
	183
	184	return TRUE;
	185	}
	186
	187	bool wxRegion::Combine(const wxRect& rect, wxRegionOp op)
	188	{
	189	return Combine(rect.GetLeft(), rect.GetTop(), rect.GetWidth(), rect.GetHeight(), op);
	190	}
	191
	192	//-----------------------------------------------------------------------------
	193	//# Information on region
	194	//-----------------------------------------------------------------------------
	195
	196	// Outer bounds of region
	197	void wxRegion::GetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const
	198	{
	199	if (m_refData)
	200	{
	201	Rect box ;
	202	GetRegionBounds( M_REGION , &box ) ;
	203	x = box.left ;
	204	y = box.top ;
	205	w = box.right - box.left ;
	206	h = box.bottom - box.top ;
	207	}
	208	else
	209	{
	210	x = y = w = h = 0;
	211	}
	212	}
	213
	214	wxRect wxRegion::GetBox() const
	215	{
	216	wxCoord x, y, w, h;
	217	GetBox(x, y, w, h);
	218	return wxRect(x, y, w, h);
	219	}
	220
	221	// Is region empty?
	222	bool wxRegion::Empty() const
	223	{
	224	return EmptyRgn( M_REGION ) ;
	225	}
	226
	227	const WXHRGN wxRegion::GetWXHRGN() const
	228	{
	229	return M_REGION ;
	230	}
	231
	232	//-----------------------------------------------------------------------------
	233	//# Tests
	234	//-----------------------------------------------------------------------------
	235
	236	// Does the region contain the point (x,y)?
	237	wxRegionContain wxRegion::Contains(long x, long y) const
	238	{
	239	if (!m_refData)
	240	return wxOutRegion;
	241
	242	// TODO. Return wxInRegion if within region.
	243	if (0)
	244	return wxInRegion;
	245	return wxOutRegion;
	246	}
	247
	248	// Does the region contain the point pt?
	249	wxRegionContain wxRegion::Contains(const wxPoint& pt) const
	250	{
	251	if (!m_refData)
	252	return wxOutRegion;
	253
	254	Point p = { pt.y , pt.x } ;
	255	if (PtInRgn( p , M_REGION ) )
	256	return wxInRegion;
	257
	258	return wxOutRegion;
	259	}
	260
	261	// Does the region contain the rectangle (x, y, w, h)?
	262	wxRegionContain wxRegion::Contains(long x, long y, long w, long h) const
	263	{
	264	if (!m_refData)
	265	return wxOutRegion;
	266
	267	Rect rect = { y , x , y + h , x + w } ;
	268	if (RectInRgn( &rect , M_REGION ) )
	269	return wxInRegion;
	270	else
	271	return wxOutRegion;
	272	}
	273
	274	// Does the region contain the rectangle rect
	275	wxRegionContain wxRegion::Contains(const wxRect& rect) const
	276	{
	277	if (!m_refData)
	278	return wxOutRegion;
	279
	280	long x, y, w, h;
	281	x = rect.x;
	282	y = rect.y;
	283	w = rect.GetWidth();
	284	h = rect.GetHeight();
	285	return Contains(x, y, w, h);
	286	}
	287
	288	///////////////////////////////////////////////////////////////////////////////
	289	// //
	290	// wxRegionIterator //
	291	// //
	292	///////////////////////////////////////////////////////////////////////////////
	293
	294	/*!
	295	* Initialize empty iterator
	296	*/
	297	wxRegionIterator::wxRegionIterator() : m_current(0), m_numRects(0), m_rects(NULL)
	298	{
	299	}
	300
	301	wxRegionIterator::~wxRegionIterator()
	302	{
	303	if (m_rects)
	304	delete[] m_rects;
	305	}
	306
	307	/*!
	308	* Initialize iterator for region
	309	*/
	310	wxRegionIterator::wxRegionIterator(const wxRegion& region)
	311	{
	312	m_rects = NULL;
	313
	314	Reset(region);
	315	}
	316
	317	/*!
	318	* Reset iterator for a new /e region.
	319	*/
	320	void wxRegionIterator::Reset(const wxRegion& region)
	321	{
	322	m_current = 0;
	323	m_region = region;
	324
	325	if (m_rects)
	326	delete[] m_rects;
	327
	328	m_rects = NULL;
	329
	330	if (m_region.Empty())
	331	m_numRects = 0;
	332	else
	333	{
	334	// we cannot dissolve it into rects on mac
	335	m_rects = new wxRect[1];
	336	Rect rect ;
	337	GetRegionBounds( OTHER_M_REGION( region ) , &rect ) ;
	338	m_rects[0].x = rect.left;
	339	m_rects[0].y = rect.top;
	340	m_rects[0].width = rect.right - rect.left;
	341	m_rects[0].height = rect.bottom - rect.top;
	342	m_numRects = 1;
	343	}
	344	}
	345
	346	/*!
	347	* Increment iterator. The rectangle returned is the one after the
	348	* incrementation.
	349	*/
	350	void wxRegionIterator::operator ++ ()
	351	{
	352	if (m_current < m_numRects)
	353	++m_current;
	354	}
	355
	356	/*!
	357	* Increment iterator. The rectangle returned is the one before the
	358	* incrementation.
	359	*/
	360	void wxRegionIterator::operator ++ (int)
	361	{
	362	if (m_current < m_numRects)
	363	++m_current;
	364	}
	365
	366	long wxRegionIterator::GetX() const
	367	{
	368	if (m_current < m_numRects)
	369	return m_rects[m_current].x;
	370	return 0;
	371	}
	372
	373	long wxRegionIterator::GetY() const
	374	{
	375	if (m_current < m_numRects)
	376	return m_rects[m_current].y;
	377	return 0;
	378	}
	379
	380	long wxRegionIterator::GetW() const
	381	{
	382	if (m_current < m_numRects)
	383	return m_rects[m_current].width ;
	384	return 0;
	385	}
	386
	387	long wxRegionIterator::GetH() const
	388	{
	389	if (m_current < m_numRects)
	390	return m_rects[m_current].height;
	391	return 0;
	392	}
	393