src/stubs/dc.cpp

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

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

#include "wx/dc.h"

IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)

//-----------------------------------------------------------------------------
// 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_autoSetting = 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 = -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_palette = wxAPP_COLOURMAP;
};

wxDC::~wxDC(void)
{
};

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

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 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
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dc.cpp
	3	// Purpose: wxDC class
	4	// Author: AUTHOR
	5	// Modified by:
	6	// Created: 01/02/97
	7	// RCS-ID: $Id$
	8	// Copyright: (c) AUTHOR
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#ifdef __GNUG__
	13	#pragma implementation "dc.h"
	14	#endif
	15
	16	#include "wx/dc.h"
	17
	18	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	19
	20	//-----------------------------------------------------------------------------
	21	// constants
	22	//-----------------------------------------------------------------------------
	23
	24	#define mm2inches 0.0393700787402
	25	#define inches2mm 25.4
	26	#define mm2twips 56.6929133859
	27	#define twips2mm 0.0176388888889
	28	#define mm2pt 2.83464566929
	29	#define pt2mm 0.352777777778
	30
	31	//-----------------------------------------------------------------------------
	32	// wxDC
	33	//-----------------------------------------------------------------------------
	34
	35	wxDC::wxDC(void)
	36	{
	37	m_ok = FALSE;
	38	m_optimize = FALSE;
	39	m_autoSetting = FALSE;
	40	m_colour = TRUE;
	41	m_clipping = FALSE;
	42
	43	m_mm_to_pix_x = 1.0;
	44	m_mm_to_pix_y = 1.0;
	45
	46	m_logicalOriginX = 0;
	47	m_logicalOriginY = 0;
	48	m_deviceOriginX = 0;
	49	m_deviceOriginY = 0;
	50	m_internalDeviceOriginX = 0;
	51	m_internalDeviceOriginY = 0;
	52	m_externalDeviceOriginX = 0;
	53	m_externalDeviceOriginY = 0;
	54
	55	m_logicalScaleX = 1.0;
	56	m_logicalScaleY = 1.0;
	57	m_userScaleX = 1.0;
	58	m_userScaleY = 1.0;
	59	m_scaleX = 1.0;
	60	m_scaleY = 1.0;
	61
	62	m_mappingMode = wxMM_TEXT;
	63	m_needComputeScaleX = FALSE;
	64	m_needComputeScaleY = FALSE;
	65
	66	m_signX = 1; // default x-axis left to right
	67	m_signY = 1; // default y-axis top down
	68
	69	m_maxX = m_maxY = -100000;
	70	m_minY = m_minY = 100000;
	71
	72	m_logicalFunction = wxCOPY;
	73	// m_textAlignment = wxALIGN_TOP_LEFT;
	74	m_backgroundMode = wxTRANSPARENT;
	75
	76	m_textForegroundColour = *wxBLACK;
	77	m_textBackgroundColour = *wxWHITE;
	78	m_pen = *wxBLACK_PEN;
	79	m_font = *wxNORMAL_FONT;
	80	m_brush = *wxTRANSPARENT_BRUSH;
	81	m_backgroundBrush = *wxWHITE_BRUSH;
	82
	83	// m_palette = wxAPP_COLOURMAP;
	84	};
	85
	86	wxDC::~wxDC(void)
	87	{
	88	};
	89
	90	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
	91	{
	92	};
	93
	94	void wxDC::DrawPoint( wxPoint& point )
	95	{
	96	DrawPoint( point.x, point.y );
	97	};
	98
	99	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	100	{
	101	int n = list->Number();
	102	wxPoint *points = new wxPoint[n];
	103
	104	int i = 0;
	105	for( wxNode *node = list->First(); node; node = node->Next() )
	106	{
	107	wxPoint point = (wxPoint )node->Data();
	108	points[i].x = point->x;
	109	points[i++].y = point->y;
	110	};
	111	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
	112	delete[] points;
	113	};
	114
	115	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
	116	{
	117	int n = list->Number();
	118	wxPoint *points = new wxPoint[n];
	119
	120	int i = 0;
	121	for( wxNode *node = list->First(); node; node = node->Next() )
	122	{
	123	wxPoint point = (wxPoint )node->Data();
	124	points[i].x = point->x;
	125	points[i++].y = point->y;
	126	};
	127	DrawLines( n, points, xoffset, yoffset );
	128	delete []points;
	129	};
	130
	131	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
	132	{
	133	wxList list;
	134	list.Append( (wxObject*)new wxPoint(x1, y1) );
	135	list.Append( (wxObject*)new wxPoint(x2, y2) );
	136	list.Append( (wxObject*)new wxPoint(x3, y3) );
	137	DrawSpline(&list);
	138	wxNode *node = list.First();
	139	while (node)
	140	{
	141	wxPoint p = (wxPoint)node->Data();
	142	delete p;
	143	node = node->Next();
	144	};
	145	};
	146
	147	void wxDC::DrawSpline( int n, wxPoint points[] )
	148	{
	149	wxList list;
	150	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
	151	DrawSpline( &list );
	152	};
	153
	154	void wxDC::SetClippingRegion( long x, long y, long width, long height )
	155	{
	156	m_clipping = TRUE;
	157	m_clipX1 = x;
	158	m_clipY1 = y;
	159	m_clipX2 = x + width;
	160	m_clipY2 = y + height;
	161	};
	162
	163	void wxDC::DestroyClippingRegion(void)
	164	{
	165	m_clipping = FALSE;
	166	};
	167
	168	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
	169	{
	170	if (m_clipping)
	171	{
	172	if (x) *x = m_clipX1;
	173	if (y) *y = m_clipY1;
	174	if (width) *width = (m_clipX2 - m_clipX1);
	175	if (height) *height = (m_clipY2 - m_clipY1);
	176	}
	177	else
	178	x = y = width = height = 0;
	179	};
	180
	181	void wxDC::GetSize( int* width, int* height ) const
	182	{
	183	*width = m_maxX-m_minX;
	184	*height = m_maxY-m_minY;
	185	};
	186
	187	void wxDC::GetSizeMM( long* width, long* height ) const
	188	{
	189	int w = 0;
	190	int h = 0;
	191	GetSize( &w, &h );
	192	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
	193	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
	194	};
	195
	196	void wxDC::SetTextForeground( const wxColour &col )
	197	{
	198	if (!Ok()) return;
	199	m_textForegroundColour = col;
	200	};
	201
	202	void wxDC::SetTextBackground( const wxColour &col )
	203	{
	204	if (!Ok()) return;
	205	m_textBackgroundColour = col;
	206	};
	207
	208	void wxDC::SetMapMode( int mode )
	209	{
	210	switch (mode)
	211	{
	212	case wxMM_TWIPS:
	213	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
	214	break;
	215	case wxMM_POINTS:
	216	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
	217	break;
	218	case wxMM_METRIC:
	219	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
	220	break;
	221	case wxMM_LOMETRIC:
	222	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	223	break;
	224	default:
	225	case wxMM_TEXT:
	226	SetLogicalScale( 1.0, 1.0 );
	227	break;
	228	};
	229	if (mode != wxMM_TEXT)
	230	{
	231	m_needComputeScaleX = TRUE;
	232	m_needComputeScaleY = TRUE;
	233	};
	234	};
	235
	236	void wxDC::SetUserScale( double x, double y )
	237	{
	238	// allow negative ? -> no
	239	m_userScaleX = x;
	240	m_userScaleY = y;
	241	ComputeScaleAndOrigin();
	242	};
	243
	244	void wxDC::GetUserScale( double x, double y )
	245	{
	246	if (x) *x = m_userScaleX;
	247	if (y) *y = m_userScaleY;
	248	};
	249
	250	void wxDC::SetLogicalScale( double x, double y )
	251	{
	252	// allow negative ?
	253	m_logicalScaleX = x;
	254	m_logicalScaleY = y;
	255	ComputeScaleAndOrigin();
	256	};
	257
	258	void wxDC::GetLogicalScale( double x, double y )
	259	{
	260	if (x) *x = m_logicalScaleX;
	261	if (y) *y = m_logicalScaleY;
	262	};
	263
	264	void wxDC::SetLogicalOrigin( long x, long y )
	265	{
	266	m_logicalOriginX = x * m_signX; // is this still correct ?
	267	m_logicalOriginY = y * m_signY;
	268	ComputeScaleAndOrigin();
	269	};
	270
	271	void wxDC::GetLogicalOrigin( long x, long y )
	272	{
	273	if (x) *x = m_logicalOriginX;
	274	if (y) *y = m_logicalOriginY;
	275	};
	276
	277	void wxDC::SetDeviceOrigin( long x, long y )
	278	{
	279	m_externalDeviceOriginX = x;
	280	m_externalDeviceOriginY = y;
	281	ComputeScaleAndOrigin();
	282	};
	283
	284	void wxDC::GetDeviceOrigin( long x, long y )
	285	{
	286	// if (x) *x = m_externalDeviceOriginX;
	287	// if (y) *y = m_externalDeviceOriginY;
	288	if (x) *x = m_deviceOriginX;
	289	if (y) *y = m_deviceOriginY;
	290	};
	291
	292	void wxDC::SetInternalDeviceOrigin( long x, long y )
	293	{
	294	m_internalDeviceOriginX = x;
	295	m_internalDeviceOriginY = y;
	296	ComputeScaleAndOrigin();
	297	};
	298
	299	void wxDC::GetInternalDeviceOrigin( long x, long y )
	300	{
	301	if (x) *x = m_internalDeviceOriginX;
	302	if (y) *y = m_internalDeviceOriginY;
	303	};
	304
	305	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	306	{
	307	m_signX = (xLeftRight ? 1 : -1);
	308	m_signY = (yBottomUp ? -1 : 1);
	309	ComputeScaleAndOrigin();
	310	};
	311
	312	long wxDC::DeviceToLogicalX(long x) const
	313	{
	314	return XDEV2LOG(x);
	315	};
	316
	317	long wxDC::DeviceToLogicalY(long y) const
	318	{
	319	return YDEV2LOG(y);
	320	};
	321
	322	long wxDC::DeviceToLogicalXRel(long x) const
	323	{
	324	return XDEV2LOGREL(x);
	325	};
	326
	327	long wxDC::DeviceToLogicalYRel(long y) const
	328	{
	329	return YDEV2LOGREL(y);
	330	};
	331
	332	long wxDC::LogicalToDeviceX(long x) const
	333	{
	334	return XLOG2DEV(x);
	335	};
	336
	337	long wxDC::LogicalToDeviceY(long y) const
	338	{
	339	return YLOG2DEV(y);
	340	};
	341
	342	long wxDC::LogicalToDeviceXRel(long x) const
	343	{
	344	return XLOG2DEVREL(x);
	345	};
	346
	347	long wxDC::LogicalToDeviceYRel(long y) const
	348	{
	349	return YLOG2DEVREL(y);
	350	};
	351
	352	void wxDC::CalcBoundingBox( long x, long y )
	353	{
	354	if (x < m_minX) m_minX = x;
	355	if (y < m_minY) m_minY = y;
	356	if (x > m_maxX) m_maxX = x;
	357	if (y > m_maxY) m_maxY = y;
	358	};
	359
	360	void wxDC::ComputeScaleAndOrigin(void)
	361	{
	362	// CMB: copy scale to see if it changes
	363	double origScaleX = m_scaleX;
	364	double origScaleY = m_scaleY;
	365
	366	m_scaleX = m_logicalScaleX * m_userScaleX;
	367	m_scaleY = m_logicalScaleY * m_userScaleY;
	368
	369	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	370	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	371
	372	// CMB: if scale has changed call SetPen to recalulate the line width
	373	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	374	{
	375	// this is a bit artificial, but we need to force wxDC to think
	376	// the pen has changed
	377	wxPen* pen = & GetPen();
	378	wxPen tempPen;
	379	m_pen = tempPen;
	380	SetPen(* pen);
	381	}
	382	};
	383