[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 = wxMM_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 = 0;
    m_minX = m_minY = 0;
    
    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( int* width, int* height ) const
{
    int w = 0;
    int h = 0;
    GetSize( &w, &h );
    *width = int( double(w) / (m_scaleX*m_mm_to_pix_x) );
    *height = int( double(h) / (m_scaleY*m_mm_to_pix_y) );
};

// Resolution in pixels per logical inch
wxSize wxDC::GetPPI(void) const
{
    // TODO (should probably be pure virtual)
    return wxSize(0, 0);
}

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 wxMM_TWIPS:
        SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
        break;
    case wxMM_POINTS:
        SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
        break;
    case wxMM_METRIC:
        SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
        break;
    case wxMM_LOMETRIC:
        SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
        break;
    default:
    case wxMM_TEXT:
        SetLogicalScale( 1.0, 1.0 );
        break;
    };
    if (mode != wxMM_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
e3065973	64	m_mappingMode = wxMM_TEXT;
2d120f83 JS	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
ea6f44b5 RR	71	m_maxX = m_maxY = 0;
ea6f44b5 RR	72	m_minX = m_minY = 0;
2d120f83 JS	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	};
4bb6408c JS	215
7bcb11d3	216	void wxDC::GetSizeMM( int* width, int* height ) const
4bb6408c	217	{
2d120f83 JS	218	int w = 0;
	219	int h = 0;
	220	GetSize( &w, &h );
7bcb11d3 JS	221	width = int( double(w) / (m_scaleXm_mm_to_pix_x) );
7bcb11d3 JS	222	height = int( double(h) / (m_scaleYm_mm_to_pix_y) );
4bb6408c JS	223	};
4bb6408c JS	224
7bcb11d3 JS	225	// Resolution in pixels per logical inch
	226	wxSize wxDC::GetPPI(void) const
	227	{
	228	// TODO (should probably be pure virtual)
	229	return wxSize(0, 0);
	230	}
	231
4bb6408c JS	232	void wxDC::SetTextForeground( const wxColour &col )
4bb6408c JS	233	{
2d120f83 JS	234	if (!Ok()) return;
2d120f83 JS	235	m_textForegroundColour = col;
4bb6408c JS	236	};
	237
	238	void wxDC::SetTextBackground( const wxColour &col )
	239	{
2d120f83 JS	240	if (!Ok()) return;
2d120f83 JS	241	m_textBackgroundColour = col;
4bb6408c JS	242	};
	243
	244	void wxDC::SetMapMode( int mode )
	245	{
2d120f83 JS	246	switch (mode)
2d120f83 JS	247	{
e3065973	248	case wxMM_TWIPS:
2d120f83 JS	249	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
2d120f83 JS	250	break;
e3065973	251	case wxMM_POINTS:
2d120f83 JS	252	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
2d120f83 JS	253	break;
e3065973	254	case wxMM_METRIC:
2d120f83 JS	255	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
2d120f83 JS	256	break;
e3065973	257	case wxMM_LOMETRIC:
2d120f83 JS	258	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
2d120f83 JS	259	break;
4bb6408c	260	default:
e3065973	261	case wxMM_TEXT:
2d120f83 JS	262	SetLogicalScale( 1.0, 1.0 );
	263	break;
	264	};
e3065973	265	if (mode != wxMM_TEXT)
2d120f83 JS	266	{
	267	m_needComputeScaleX = TRUE;
	268	m_needComputeScaleY = TRUE;
	269	};
4bb6408c JS	270	};
	271
	272	void wxDC::SetUserScale( double x, double y )
	273	{
2d120f83 JS	274	// allow negative ? -> no
	275	m_userScaleX = x;
	276	m_userScaleY = y;
	277	ComputeScaleAndOrigin();
4bb6408c JS	278	};
	279
	280	void wxDC::GetUserScale( double x, double y )
	281	{
2d120f83 JS	282	if (x) *x = m_userScaleX;
2d120f83 JS	283	if (y) *y = m_userScaleY;
4bb6408c JS	284	};
	285
	286	void wxDC::SetLogicalScale( double x, double y )
	287	{
2d120f83 JS	288	// allow negative ?
	289	m_logicalScaleX = x;
	290	m_logicalScaleY = y;
	291	ComputeScaleAndOrigin();
4bb6408c JS	292	};
	293
	294	void wxDC::GetLogicalScale( double x, double y )
	295	{
2d120f83 JS	296	if (x) *x = m_logicalScaleX;
2d120f83 JS	297	if (y) *y = m_logicalScaleY;
4bb6408c JS	298	};
	299
	300	void wxDC::SetLogicalOrigin( long x, long y )
	301	{
2d120f83 JS	302	m_logicalOriginX = x * m_signX; // is this still correct ?
	303	m_logicalOriginY = y * m_signY;
	304	ComputeScaleAndOrigin();
4bb6408c JS	305	};
	306
	307	void wxDC::GetLogicalOrigin( long x, long y )
	308	{
2d120f83 JS	309	if (x) *x = m_logicalOriginX;
2d120f83 JS	310	if (y) *y = m_logicalOriginY;
4bb6408c JS	311	};
	312
	313	void wxDC::SetDeviceOrigin( long x, long y )
	314	{
2d120f83 JS	315	m_externalDeviceOriginX = x;
	316	m_externalDeviceOriginY = y;
	317	ComputeScaleAndOrigin();
4bb6408c JS	318	};
	319
	320	void wxDC::GetDeviceOrigin( long x, long y )
	321	{
2d120f83 JS	322	// if (x) *x = m_externalDeviceOriginX;
	323	// if (y) *y = m_externalDeviceOriginY;
	324	if (x) *x = m_deviceOriginX;
	325	if (y) *y = m_deviceOriginY;
4bb6408c JS	326	};
	327
	328	void wxDC::SetInternalDeviceOrigin( long x, long y )
	329	{
2d120f83 JS	330	m_internalDeviceOriginX = x;
	331	m_internalDeviceOriginY = y;
	332	ComputeScaleAndOrigin();
4bb6408c JS	333	};
	334
	335	void wxDC::GetInternalDeviceOrigin( long x, long y )
	336	{
2d120f83 JS	337	if (x) *x = m_internalDeviceOriginX;
2d120f83 JS	338	if (y) *y = m_internalDeviceOriginY;
4bb6408c JS	339	};
	340
	341	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	342	{
2d120f83 JS	343	m_signX = (xLeftRight ? 1 : -1);
	344	m_signY = (yBottomUp ? -1 : 1);
	345	ComputeScaleAndOrigin();
4bb6408c JS	346	};
	347
	348	long wxDC::DeviceToLogicalX(long x) const
	349	{
2d120f83	350	return XDEV2LOG(x);
4bb6408c JS	351	};
	352
	353	long wxDC::DeviceToLogicalY(long y) const
	354	{
2d120f83	355	return YDEV2LOG(y);
4bb6408c JS	356	};
	357
	358	long wxDC::DeviceToLogicalXRel(long x) const
	359	{
2d120f83	360	return XDEV2LOGREL(x);
4bb6408c JS	361	};
	362
	363	long wxDC::DeviceToLogicalYRel(long y) const
	364	{
2d120f83	365	return YDEV2LOGREL(y);
4bb6408c JS	366	};
	367
	368	long wxDC::LogicalToDeviceX(long x) const
	369	{
2d120f83	370	return XLOG2DEV(x);
4bb6408c JS	371	};
	372
	373	long wxDC::LogicalToDeviceY(long y) const
	374	{
2d120f83	375	return YLOG2DEV(y);
4bb6408c JS	376	};
	377
	378	long wxDC::LogicalToDeviceXRel(long x) const
	379	{
2d120f83	380	return XLOG2DEVREL(x);
4bb6408c JS	381	};
	382
	383	long wxDC::LogicalToDeviceYRel(long y) const
	384	{
2d120f83	385	return YLOG2DEVREL(y);
4bb6408c	386	};
2d120f83	387
4bb6408c JS	388	void wxDC::CalcBoundingBox( long x, long y )
4bb6408c JS	389	{
2d120f83 JS	390	if (x < m_minX) m_minX = x;
	391	if (y < m_minY) m_minY = y;
	392	if (x > m_maxX) m_maxX = x;
	393	if (y > m_maxY) m_maxY = y;
4bb6408c JS	394	};
	395
	396	void wxDC::ComputeScaleAndOrigin(void)
	397	{
2d120f83 JS	398	// CMB: copy scale to see if it changes
	399	double origScaleX = m_scaleX;
	400	double origScaleY = m_scaleY;
	401
	402	m_scaleX = m_logicalScaleX * m_userScaleX;
	403	m_scaleY = m_logicalScaleY * m_userScaleY;
	404
	405	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	406	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	407
	408	// CMB: if scale has changed call SetPen to recalulate the line width
	409	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	410	{
	411	// this is a bit artificial, but we need to force wxDC to think
	412	// the pen has changed
	413	wxPen* pen = & GetPen();
	414	wxPen tempPen;
	415	m_pen = tempPen;
	416	SetPen(* pen);
	417	}
4bb6408c JS	418	};
4bb6408c JS	419