[wxWidgets.git] / src / motif / dc.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dc.cpp
// Purpose:     wxDC class
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

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

#include "wx/dc.h"
#include "wx/dcmemory.h"

#if !USE_SHARED_LIBRARY
IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
#endif

//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------

#define mm2inches		0.0393700787402
#define inches2mm		25.4
#define mm2twips		56.6929133859
#define twips2mm		0.0176388888889
#define mm2pt			2.83464566929
#define pt2mm			0.352777777778

//-----------------------------------------------------------------------------
// wxDC
//-----------------------------------------------------------------------------

wxDC::wxDC(void)
{
    m_ok = FALSE;
    m_optimize = FALSE;
    m_colour = TRUE;
    m_clipping = FALSE;
    
    m_mm_to_pix_x = 1.0;
    m_mm_to_pix_y = 1.0;
    
    m_logicalOriginX = 0;
    m_logicalOriginY = 0;
    m_deviceOriginX = 0;
    m_deviceOriginY = 0;
    m_internalDeviceOriginX = 0;
    m_internalDeviceOriginY = 0;
    m_externalDeviceOriginX = 0;
    m_externalDeviceOriginY = 0;
    
    m_logicalScaleX = 1.0;
    m_logicalScaleY = 1.0;
    m_userScaleX = 1.0;
    m_userScaleY = 1.0;
    m_scaleX = 1.0;
    m_scaleY = 1.0;
    
    m_mappingMode = MM_TEXT;
    m_needComputeScaleX = FALSE;
    m_needComputeScaleY = FALSE;
    
    m_signX = 1;  // default x-axis left to right
    m_signY = 1;  // default y-axis top down
    
    m_maxX = m_maxY = -100000;
    m_minY = m_minY =  100000;
    
    m_logicalFunction = wxCOPY;
    //  m_textAlignment = wxALIGN_TOP_LEFT;
    m_backgroundMode = wxTRANSPARENT;
    
    m_textForegroundColour = *wxBLACK;
    m_textBackgroundColour = *wxWHITE;
    m_pen = *wxBLACK_PEN;
    m_font = *wxNORMAL_FONT;
    m_brush = *wxTRANSPARENT_BRUSH;
    m_backgroundBrush = *wxWHITE_BRUSH;
    
    m_isInteractive = FALSE;
    
    //  m_palette = wxAPP_COLOURMAP;
};

wxDC::~wxDC(void)
{
};

void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y))
{
};

void wxDC::DrawBitmap( const wxBitmap& bitmap, long x, long y, bool useMask )
{
    if (!bitmap.Ok())
        return;
    
    wxMemoryDC memDC;
    memDC.SelectObject(bitmap);
    
    /* Not sure if we need this. The mask should leave the
    * masked areas as per the original background of this DC.
    if (useMask)
    {
    // There might be transparent areas, so make these
    // the same colour as this DC
    memDC.SetBackground(* GetBackground());
    memDC.Clear();
    }
    */
    
    Blit(x, y, bitmap.GetWidth(), bitmap.GetHeight(), & memDC, 0, 0, wxCOPY, useMask);
    
    memDC.SelectObject(wxNullBitmap);
};


void wxDC::DrawPoint( wxPoint& point ) 
{ 
    DrawPoint( point.x, point.y ); 
};

void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
{
    int n = list->Number();
    wxPoint *points = new wxPoint[n];
    
    int i = 0;
    for( wxNode *node = list->First(); node; node = node->Next() )
    {
        wxPoint *point = (wxPoint *)node->Data();
        points[i].x = point->x;
        points[i++].y = point->y;
    };
    DrawPolygon( n, points, xoffset, yoffset, fillStyle );
    delete[] points;
};

void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
{
    int n = list->Number();
    wxPoint *points = new wxPoint[n];
    
    int i = 0;
    for( wxNode *node = list->First(); node; node = node->Next() ) 
    {
        wxPoint *point = (wxPoint *)node->Data();
        points[i].x = point->x;
        points[i++].y = point->y;
    };
    DrawLines( n, points, xoffset, yoffset );
    delete []points;
};

void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
{
    wxList list;
    list.Append( (wxObject*)new wxPoint(x1, y1) );
    list.Append( (wxObject*)new wxPoint(x2, y2) );
    list.Append( (wxObject*)new wxPoint(x3, y3) );
    DrawSpline(&list);
    wxNode *node = list.First();
    while (node)
    {
        wxPoint *p = (wxPoint*)node->Data();
        delete p;
        node = node->Next();
    };
};

void wxDC::DrawSpline( int n, wxPoint points[] )
{
    wxList list;
    for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
    DrawSpline( &list );
};

void wxDC::SetClippingRegion( long x, long y, long width, long height )
{
    m_clipping = TRUE;
    m_clipX1 = x;
    m_clipY1 = y;
    m_clipX2 = x + width;
    m_clipY2 = y + height;
};

void wxDC::DestroyClippingRegion(void)
{
    m_clipping = FALSE;
};

void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const
{
    if (m_clipping)
    {
        if (x) *x = m_clipX1;
        if (y) *y = m_clipY1;
        if (width) *width = (m_clipX2 - m_clipX1);
        if (height) *height = (m_clipY2 - m_clipY1);
    }
    else
        *x = *y = *width = *height = 0;
};

void wxDC::GetSize( int* width, int* height ) const
{
    *width = m_maxX-m_minX;
    *height = m_maxY-m_minY;
};

void wxDC::GetSizeMM( long* width, long* height ) const
{
    int w = 0;
    int h = 0;
    GetSize( &w, &h );
    *width = long( double(w) / (m_scaleX*m_mm_to_pix_x) );
    *height = long( double(h) / (m_scaleY*m_mm_to_pix_y) );
};

void wxDC::SetTextForeground( const wxColour &col )
{
    if (!Ok()) return;
    m_textForegroundColour = col;
};

void wxDC::SetTextBackground( const wxColour &col )
{
    if (!Ok()) return;
    m_textBackgroundColour = col;
};

void wxDC::SetMapMode( int mode )
{
    switch (mode) 
    {
    case MM_TWIPS:
        SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
        break;
    case MM_POINTS:
        SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
        break;
    case MM_METRIC:
        SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
        break;
    case MM_LOMETRIC:
        SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
        break;
    default:
    case MM_TEXT:
        SetLogicalScale( 1.0, 1.0 );
        break;
    };
    if (mode != MM_TEXT)
    {
        m_needComputeScaleX = TRUE;
        m_needComputeScaleY = TRUE;
    };
};

void wxDC::SetUserScale( double x, double y )
{
    // allow negative ? -> no
    m_userScaleX = x;
    m_userScaleY = y;
    ComputeScaleAndOrigin();
};

void wxDC::GetUserScale( double *x, double *y )
{
    if (x) *x = m_userScaleX;
    if (y) *y = m_userScaleY;
};

void wxDC::SetLogicalScale( double x, double y )
{
    // allow negative ?
    m_logicalScaleX = x;
    m_logicalScaleY = y;
    ComputeScaleAndOrigin();
};

void wxDC::GetLogicalScale( double *x, double *y )
{
    if (x) *x = m_logicalScaleX;
    if (y) *y = m_logicalScaleY;
};

void wxDC::SetLogicalOrigin( long x, long y )
{
    m_logicalOriginX = x * m_signX;   // is this still correct ?
    m_logicalOriginY = y * m_signY;
    ComputeScaleAndOrigin();
};

void wxDC::GetLogicalOrigin( long *x, long *y )
{
    if (x) *x = m_logicalOriginX;
    if (y) *y = m_logicalOriginY;
};

void wxDC::SetDeviceOrigin( long x, long y )
{
    m_externalDeviceOriginX = x;
    m_externalDeviceOriginY = y;
    ComputeScaleAndOrigin();
};

void wxDC::GetDeviceOrigin( long *x, long *y )
{
    //  if (x) *x = m_externalDeviceOriginX;
    //  if (y) *y = m_externalDeviceOriginY;
    if (x) *x = m_deviceOriginX;
    if (y) *y = m_deviceOriginY;
};

void wxDC::SetInternalDeviceOrigin( long x, long y )
{
    m_internalDeviceOriginX = x;
    m_internalDeviceOriginY = y;
    ComputeScaleAndOrigin();
};

void wxDC::GetInternalDeviceOrigin( long *x, long *y )
{
    if (x) *x = m_internalDeviceOriginX;
    if (y) *y = m_internalDeviceOriginY;
};

void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
{
    m_signX = (xLeftRight ?  1 : -1);
    m_signY = (yBottomUp  ? -1 :  1);
    ComputeScaleAndOrigin();
};

long wxDC::DeviceToLogicalX(long x) const
{
    return XDEV2LOG(x);
};

long wxDC::DeviceToLogicalY(long y) const
{
    return YDEV2LOG(y);
};

long wxDC::DeviceToLogicalXRel(long x) const
{
    return XDEV2LOGREL(x);
};

long wxDC::DeviceToLogicalYRel(long y) const
{
    return YDEV2LOGREL(y);
};

long wxDC::LogicalToDeviceX(long x) const
{
    return XLOG2DEV(x);
};

long wxDC::LogicalToDeviceY(long y) const
{
    return YLOG2DEV(y);
};

long wxDC::LogicalToDeviceXRel(long x) const
{
    return XLOG2DEVREL(x);
};

long wxDC::LogicalToDeviceYRel(long y) const
{
    return YLOG2DEVREL(y);
};

void wxDC::CalcBoundingBox( long x, long y )
{
    if (x < m_minX) m_minX = x;
    if (y < m_minY) m_minY = y;
    if (x > m_maxX) m_maxX = x;
    if (y > m_maxY) m_maxY = y;
};

void wxDC::ComputeScaleAndOrigin(void)
{
    // CMB: copy scale to see if it changes
    double origScaleX = m_scaleX;
    double origScaleY = m_scaleY;
    
    m_scaleX = m_logicalScaleX * m_userScaleX;
    m_scaleY = m_logicalScaleY * m_userScaleY;
    
    m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
    m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
    
    // CMB: if scale has changed call SetPen to recalulate the line width 
    if (m_scaleX != origScaleX || m_scaleY != origScaleY)
    {
        // this is a bit artificial, but we need to force wxDC to think
        // the pen has changed
        wxPen* pen = & GetPen();
        wxPen tempPen;
        m_pen = tempPen;
        SetPen(* pen);
    }
};
Commit	Line	Data
4bb6408c JS	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dc.cpp
	3	// Purpose: wxDC class
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 01/02/97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "dc.h"
	14	#endif
	15
	16	#include "wx/dc.h"
a367b9b3	17	#include "wx/dcmemory.h"
4bb6408c JS	18
	19	#if !USE_SHARED_LIBRARY
	20	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	21	#endif
	22
	23	//-----------------------------------------------------------------------------
	24	// constants
	25	//-----------------------------------------------------------------------------
	26
	27	#define mm2inches 0.0393700787402
	28	#define inches2mm 25.4
	29	#define mm2twips 56.6929133859
	30	#define twips2mm 0.0176388888889
	31	#define mm2pt 2.83464566929
	32	#define pt2mm 0.352777777778
	33
	34	//-----------------------------------------------------------------------------
	35	// wxDC
	36	//-----------------------------------------------------------------------------
	37
	38	wxDC::wxDC(void)
	39	{
2d120f83 JS	40	m_ok = FALSE;
	41	m_optimize = FALSE;
	42	m_colour = TRUE;
	43	m_clipping = FALSE;
	44
	45	m_mm_to_pix_x = 1.0;
	46	m_mm_to_pix_y = 1.0;
	47
	48	m_logicalOriginX = 0;
	49	m_logicalOriginY = 0;
	50	m_deviceOriginX = 0;
	51	m_deviceOriginY = 0;
	52	m_internalDeviceOriginX = 0;
	53	m_internalDeviceOriginY = 0;
	54	m_externalDeviceOriginX = 0;
	55	m_externalDeviceOriginY = 0;
	56
	57	m_logicalScaleX = 1.0;
	58	m_logicalScaleY = 1.0;
	59	m_userScaleX = 1.0;
	60	m_userScaleY = 1.0;
	61	m_scaleX = 1.0;
	62	m_scaleY = 1.0;
	63
	64	m_mappingMode = MM_TEXT;
	65	m_needComputeScaleX = FALSE;
	66	m_needComputeScaleY = FALSE;
	67
	68	m_signX = 1; // default x-axis left to right
	69	m_signY = 1; // default y-axis top down
	70
	71	m_maxX = m_maxY = -100000;
	72	m_minY = m_minY = 100000;
	73
	74	m_logicalFunction = wxCOPY;
	75	// m_textAlignment = wxALIGN_TOP_LEFT;
	76	m_backgroundMode = wxTRANSPARENT;
	77
	78	m_textForegroundColour = *wxBLACK;
	79	m_textBackgroundColour = *wxWHITE;
	80	m_pen = *wxBLACK_PEN;
	81	m_font = *wxNORMAL_FONT;
	82	m_brush = *wxTRANSPARENT_BRUSH;
	83	m_backgroundBrush = *wxWHITE_BRUSH;
	84
	85	m_isInteractive = FALSE;
	86
	87	// m_palette = wxAPP_COLOURMAP;
4bb6408c JS	88	};
	89
	90	wxDC::~wxDC(void)
	91	{
	92	};
	93
793f619f	94	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y))
4bb6408c JS	95	{
	96	};
	97
a367b9b3 JS	98	void wxDC::DrawBitmap( const wxBitmap& bitmap, long x, long y, bool useMask )
	99	{
	100	if (!bitmap.Ok())
	101	return;
2d120f83	102
a367b9b3 JS	103	wxMemoryDC memDC;
a367b9b3 JS	104	memDC.SelectObject(bitmap);
2d120f83 JS	105
	106	/* Not sure if we need this. The mask should leave the
	107	* masked areas as per the original background of this DC.
a367b9b3 JS	108	if (useMask)
a367b9b3 JS	109	{
2d120f83 JS	110	// There might be transparent areas, so make these
	111	// the same colour as this DC
	112	memDC.SetBackground(* GetBackground());
	113	memDC.Clear();
a367b9b3	114	}
2d120f83 JS	115	*/
2d120f83 JS	116
a367b9b3	117	Blit(x, y, bitmap.GetWidth(), bitmap.GetHeight(), & memDC, 0, 0, wxCOPY, useMask);
2d120f83	118
a367b9b3 JS	119	memDC.SelectObject(wxNullBitmap);
	120	};
	121
	122
4bb6408c JS	123	void wxDC::DrawPoint( wxPoint& point )
4bb6408c JS	124	{
2d120f83	125	DrawPoint( point.x, point.y );
4bb6408c JS	126	};
	127
	128	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	129	{
2d120f83 JS	130	int n = list->Number();
	131	wxPoint *points = new wxPoint[n];
	132
	133	int i = 0;
	134	for( wxNode *node = list->First(); node; node = node->Next() )
	135	{
	136	wxPoint point = (wxPoint )node->Data();
	137	points[i].x = point->x;
	138	points[i++].y = point->y;
	139	};
	140	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
	141	delete[] points;
4bb6408c JS	142	};
	143
	144	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
	145	{
2d120f83 JS	146	int n = list->Number();
	147	wxPoint *points = new wxPoint[n];
	148
	149	int i = 0;
	150	for( wxNode *node = list->First(); node; node = node->Next() )
	151	{
	152	wxPoint point = (wxPoint )node->Data();
	153	points[i].x = point->x;
	154	points[i++].y = point->y;
	155	};
	156	DrawLines( n, points, xoffset, yoffset );
	157	delete []points;
4bb6408c JS	158	};
	159
	160	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
	161	{
2d120f83 JS	162	wxList list;
	163	list.Append( (wxObject*)new wxPoint(x1, y1) );
	164	list.Append( (wxObject*)new wxPoint(x2, y2) );
	165	list.Append( (wxObject*)new wxPoint(x3, y3) );
	166	DrawSpline(&list);
	167	wxNode *node = list.First();
	168	while (node)
	169	{
	170	wxPoint p = (wxPoint)node->Data();
	171	delete p;
	172	node = node->Next();
	173	};
4bb6408c JS	174	};
4bb6408c JS	175
4bb6408c JS	176	void wxDC::DrawSpline( int n, wxPoint points[] )
4bb6408c JS	177	{
2d120f83 JS	178	wxList list;
	179	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
	180	DrawSpline( &list );
4bb6408c JS	181	};
	182
	183	void wxDC::SetClippingRegion( long x, long y, long width, long height )
	184	{
2d120f83 JS	185	m_clipping = TRUE;
	186	m_clipX1 = x;
	187	m_clipY1 = y;
	188	m_clipX2 = x + width;
	189	m_clipY2 = y + height;
4bb6408c JS	190	};
	191
	192	void wxDC::DestroyClippingRegion(void)
	193	{
2d120f83	194	m_clipping = FALSE;
4bb6408c JS	195	};
	196
	197	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
	198	{
2d120f83 JS	199	if (m_clipping)
	200	{
	201	if (x) *x = m_clipX1;
	202	if (y) *y = m_clipY1;
	203	if (width) *width = (m_clipX2 - m_clipX1);
	204	if (height) *height = (m_clipY2 - m_clipY1);
	205	}
	206	else
	207	x = y = width = height = 0;
4bb6408c JS	208	};
	209
	210	void wxDC::GetSize( int* width, int* height ) const
	211	{
2d120f83 JS	212	*width = m_maxX-m_minX;
2d120f83 JS	213	*height = m_maxY-m_minY;
4bb6408c JS	214	};
	215
	216	void wxDC::GetSizeMM( long* width, long* height ) const
	217	{
2d120f83 JS	218	int w = 0;
	219	int h = 0;
	220	GetSize( &w, &h );
	221	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
	222	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
4bb6408c JS	223	};
	224
	225	void wxDC::SetTextForeground( const wxColour &col )
	226	{
2d120f83 JS	227	if (!Ok()) return;
2d120f83 JS	228	m_textForegroundColour = col;
4bb6408c JS	229	};
	230
	231	void wxDC::SetTextBackground( const wxColour &col )
	232	{
2d120f83 JS	233	if (!Ok()) return;
2d120f83 JS	234	m_textBackgroundColour = col;
4bb6408c JS	235	};
	236
	237	void wxDC::SetMapMode( int mode )
	238	{
2d120f83 JS	239	switch (mode)
2d120f83 JS	240	{
4bb6408c	241	case MM_TWIPS:
2d120f83 JS	242	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
2d120f83 JS	243	break;
4bb6408c	244	case MM_POINTS:
2d120f83 JS	245	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
2d120f83 JS	246	break;
4bb6408c	247	case MM_METRIC:
2d120f83 JS	248	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
2d120f83 JS	249	break;
4bb6408c	250	case MM_LOMETRIC:
2d120f83 JS	251	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
2d120f83 JS	252	break;
4bb6408c JS	253	default:
4bb6408c JS	254	case MM_TEXT:
2d120f83 JS	255	SetLogicalScale( 1.0, 1.0 );
	256	break;
	257	};
	258	if (mode != MM_TEXT)
	259	{
	260	m_needComputeScaleX = TRUE;
	261	m_needComputeScaleY = TRUE;
	262	};
4bb6408c JS	263	};
	264
	265	void wxDC::SetUserScale( double x, double y )
	266	{
2d120f83 JS	267	// allow negative ? -> no
	268	m_userScaleX = x;
	269	m_userScaleY = y;
	270	ComputeScaleAndOrigin();
4bb6408c JS	271	};
	272
	273	void wxDC::GetUserScale( double x, double y )
	274	{
2d120f83 JS	275	if (x) *x = m_userScaleX;
2d120f83 JS	276	if (y) *y = m_userScaleY;
4bb6408c JS	277	};
	278
	279	void wxDC::SetLogicalScale( double x, double y )
	280	{
2d120f83 JS	281	// allow negative ?
	282	m_logicalScaleX = x;
	283	m_logicalScaleY = y;
	284	ComputeScaleAndOrigin();
4bb6408c JS	285	};
	286
	287	void wxDC::GetLogicalScale( double x, double y )
	288	{
2d120f83 JS	289	if (x) *x = m_logicalScaleX;
2d120f83 JS	290	if (y) *y = m_logicalScaleY;
4bb6408c JS	291	};
	292
	293	void wxDC::SetLogicalOrigin( long x, long y )
	294	{
2d120f83 JS	295	m_logicalOriginX = x * m_signX; // is this still correct ?
	296	m_logicalOriginY = y * m_signY;
	297	ComputeScaleAndOrigin();
4bb6408c JS	298	};
	299
	300	void wxDC::GetLogicalOrigin( long x, long y )
	301	{
2d120f83 JS	302	if (x) *x = m_logicalOriginX;
2d120f83 JS	303	if (y) *y = m_logicalOriginY;
4bb6408c JS	304	};
	305
	306	void wxDC::SetDeviceOrigin( long x, long y )
	307	{
2d120f83 JS	308	m_externalDeviceOriginX = x;
	309	m_externalDeviceOriginY = y;
	310	ComputeScaleAndOrigin();
4bb6408c JS	311	};
	312
	313	void wxDC::GetDeviceOrigin( long x, long y )
	314	{
2d120f83 JS	315	// if (x) *x = m_externalDeviceOriginX;
	316	// if (y) *y = m_externalDeviceOriginY;
	317	if (x) *x = m_deviceOriginX;
	318	if (y) *y = m_deviceOriginY;
4bb6408c JS	319	};
	320
	321	void wxDC::SetInternalDeviceOrigin( long x, long y )
	322	{
2d120f83 JS	323	m_internalDeviceOriginX = x;
	324	m_internalDeviceOriginY = y;
	325	ComputeScaleAndOrigin();
4bb6408c JS	326	};
	327
	328	void wxDC::GetInternalDeviceOrigin( long x, long y )
	329	{
2d120f83 JS	330	if (x) *x = m_internalDeviceOriginX;
2d120f83 JS	331	if (y) *y = m_internalDeviceOriginY;
4bb6408c JS	332	};
	333
	334	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	335	{
2d120f83 JS	336	m_signX = (xLeftRight ? 1 : -1);
	337	m_signY = (yBottomUp ? -1 : 1);
	338	ComputeScaleAndOrigin();
4bb6408c JS	339	};
	340
	341	long wxDC::DeviceToLogicalX(long x) const
	342	{
2d120f83	343	return XDEV2LOG(x);
4bb6408c JS	344	};
	345
	346	long wxDC::DeviceToLogicalY(long y) const
	347	{
2d120f83	348	return YDEV2LOG(y);
4bb6408c JS	349	};
	350
	351	long wxDC::DeviceToLogicalXRel(long x) const
	352	{
2d120f83	353	return XDEV2LOGREL(x);
4bb6408c JS	354	};
	355
	356	long wxDC::DeviceToLogicalYRel(long y) const
	357	{
2d120f83	358	return YDEV2LOGREL(y);
4bb6408c JS	359	};
	360
	361	long wxDC::LogicalToDeviceX(long x) const
	362	{
2d120f83	363	return XLOG2DEV(x);
4bb6408c JS	364	};
	365
	366	long wxDC::LogicalToDeviceY(long y) const
	367	{
2d120f83	368	return YLOG2DEV(y);
4bb6408c JS	369	};
	370
	371	long wxDC::LogicalToDeviceXRel(long x) const
	372	{
2d120f83	373	return XLOG2DEVREL(x);
4bb6408c JS	374	};
	375
	376	long wxDC::LogicalToDeviceYRel(long y) const
	377	{
2d120f83	378	return YLOG2DEVREL(y);
4bb6408c	379	};
2d120f83	380
4bb6408c JS	381	void wxDC::CalcBoundingBox( long x, long y )
4bb6408c JS	382	{
2d120f83 JS	383	if (x < m_minX) m_minX = x;
	384	if (y < m_minY) m_minY = y;
	385	if (x > m_maxX) m_maxX = x;
	386	if (y > m_maxY) m_maxY = y;
4bb6408c JS	387	};
	388
	389	void wxDC::ComputeScaleAndOrigin(void)
	390	{
2d120f83 JS	391	// CMB: copy scale to see if it changes
	392	double origScaleX = m_scaleX;
	393	double origScaleY = m_scaleY;
	394
	395	m_scaleX = m_logicalScaleX * m_userScaleX;
	396	m_scaleY = m_logicalScaleY * m_userScaleY;
	397
	398	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	399	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	400
	401	// CMB: if scale has changed call SetPen to recalulate the line width
	402	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	403	{
	404	// this is a bit artificial, but we need to force wxDC to think
	405	// the pen has changed
	406	wxPen* pen = & GetPen();
	407	wxPen tempPen;
	408	m_pen = tempPen;
	409	SetPen(* pen);
	410	}
4bb6408c JS	411	};
4bb6408c JS	412