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"

#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_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	#if !USE_SHARED_LIBRARY
	19	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	20	#endif
	21
	22	//-----------------------------------------------------------------------------
	23	// constants
	24	//-----------------------------------------------------------------------------
	25
	26	#define mm2inches 0.0393700787402
	27	#define inches2mm 25.4
	28	#define mm2twips 56.6929133859
	29	#define twips2mm 0.0176388888889
	30	#define mm2pt 2.83464566929
	31	#define pt2mm 0.352777777778
	32
	33	//-----------------------------------------------------------------------------
	34	// wxDC
	35	//-----------------------------------------------------------------------------
	36
	37	wxDC::wxDC(void)
	38	{
	39	m_ok = FALSE;
	40	m_optimize = FALSE;
	41	m_autoSetting = 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 = wxMM_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_palette = wxAPP_COLOURMAP;
	86	};
	87
	88	wxDC::~wxDC(void)
	89	{
	90	};
	91
	92	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
	93	{
	94	};
	95
	96	void wxDC::DrawPoint( wxPoint& point )
	97	{
	98	DrawPoint( point.x, point.y );
	99	};
	100
	101	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	102	{
	103	int n = list->Number();
	104	wxPoint *points = new wxPoint[n];
	105
	106	int i = 0;
	107	for( wxNode *node = list->First(); node; node = node->Next() )
	108	{
	109	wxPoint point = (wxPoint )node->Data();
	110	points[i].x = point->x;
	111	points[i++].y = point->y;
	112	};
	113	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
	114	delete[] points;
	115	};
	116
	117	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
	118	{
	119	int n = list->Number();
	120	wxPoint *points = new wxPoint[n];
	121
	122	int i = 0;
	123	for( wxNode *node = list->First(); node; node = node->Next() )
	124	{
	125	wxPoint point = (wxPoint )node->Data();
	126	points[i].x = point->x;
	127	points[i++].y = point->y;
	128	};
	129	DrawLines( n, points, xoffset, yoffset );
	130	delete []points;
	131	};
	132
	133	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
	134	{
	135	wxList list;
	136	list.Append( (wxObject*)new wxPoint(x1, y1) );
	137	list.Append( (wxObject*)new wxPoint(x2, y2) );
	138	list.Append( (wxObject*)new wxPoint(x3, y3) );
	139	DrawSpline(&list);
	140	wxNode *node = list.First();
	141	while (node)
	142	{
	143	wxPoint p = (wxPoint)node->Data();
	144	delete p;
	145	node = node->Next();
	146	};
	147	};
	148
	149	void wxDC::DrawSpline( int n, wxPoint points[] )
	150	{
	151	wxList list;
	152	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
	153	DrawSpline( &list );
	154	};
	155
	156	void wxDC::SetClippingRegion( long x, long y, long width, long height )
	157	{
	158	m_clipping = TRUE;
	159	m_clipX1 = x;
	160	m_clipY1 = y;
	161	m_clipX2 = x + width;
	162	m_clipY2 = y + height;
	163	};
	164
	165	void wxDC::DestroyClippingRegion(void)
	166	{
	167	m_clipping = FALSE;
	168	};
	169
	170	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
	171	{
	172	if (m_clipping)
	173	{
	174	if (x) *x = m_clipX1;
	175	if (y) *y = m_clipY1;
	176	if (width) *width = (m_clipX2 - m_clipX1);
	177	if (height) *height = (m_clipY2 - m_clipY1);
	178	}
	179	else
	180	x = y = width = height = 0;
	181	};
	182
	183	void wxDC::GetSize( int* width, int* height ) const
	184	{
	185	*width = m_maxX-m_minX;
	186	*height = m_maxY-m_minY;
	187	};
	188
	189	void wxDC::GetSizeMM( long* width, long* height ) const
	190	{
	191	int w = 0;
	192	int h = 0;
	193	GetSize( &w, &h );
	194	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
	195	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
	196	};
	197
	198	void wxDC::SetTextForeground( const wxColour &col )
	199	{
	200	if (!Ok()) return;
	201	m_textForegroundColour = col;
	202	};
	203
	204	void wxDC::SetTextBackground( const wxColour &col )
	205	{
	206	if (!Ok()) return;
	207	m_textBackgroundColour = col;
	208	};
	209
	210	void wxDC::SetMapMode( int mode )
	211	{
	212	switch (mode)
	213	{
	214	case wxMM_TWIPS:
	215	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
	216	break;
	217	case wxMM_POINTS:
	218	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
	219	break;
	220	case wxMM_METRIC:
	221	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
	222	break;
	223	case wxMM_LOMETRIC:
	224	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	225	break;
	226	default:
	227	case wxMM_TEXT:
	228	SetLogicalScale( 1.0, 1.0 );
	229	break;
	230	};
	231	if (mode != wxMM_TEXT)
	232	{
	233	m_needComputeScaleX = TRUE;
	234	m_needComputeScaleY = TRUE;
	235	};
	236	};
	237
	238	void wxDC::SetUserScale( double x, double y )
	239	{
	240	// allow negative ? -> no
	241	m_userScaleX = x;
	242	m_userScaleY = y;
	243	ComputeScaleAndOrigin();
	244	};
	245
	246	void wxDC::GetUserScale( double x, double y )
	247	{
	248	if (x) *x = m_userScaleX;
	249	if (y) *y = m_userScaleY;
	250	};
	251
	252	void wxDC::SetLogicalScale( double x, double y )
	253	{
	254	// allow negative ?
	255	m_logicalScaleX = x;
	256	m_logicalScaleY = y;
	257	ComputeScaleAndOrigin();
	258	};
	259
	260	void wxDC::GetLogicalScale( double x, double y )
	261	{
	262	if (x) *x = m_logicalScaleX;
	263	if (y) *y = m_logicalScaleY;
	264	};
	265
	266	void wxDC::SetLogicalOrigin( long x, long y )
	267	{
	268	m_logicalOriginX = x * m_signX; // is this still correct ?
	269	m_logicalOriginY = y * m_signY;
	270	ComputeScaleAndOrigin();
	271	};
	272
	273	void wxDC::GetLogicalOrigin( long x, long y )
	274	{
	275	if (x) *x = m_logicalOriginX;
	276	if (y) *y = m_logicalOriginY;
	277	};
	278
	279	void wxDC::SetDeviceOrigin( long x, long y )
	280	{
	281	m_externalDeviceOriginX = x;
	282	m_externalDeviceOriginY = y;
	283	ComputeScaleAndOrigin();
	284	};
	285
	286	void wxDC::GetDeviceOrigin( long x, long y )
	287	{
	288	// if (x) *x = m_externalDeviceOriginX;
	289	// if (y) *y = m_externalDeviceOriginY;
	290	if (x) *x = m_deviceOriginX;
	291	if (y) *y = m_deviceOriginY;
	292	};
	293
	294	void wxDC::SetInternalDeviceOrigin( long x, long y )
	295	{
	296	m_internalDeviceOriginX = x;
	297	m_internalDeviceOriginY = y;
	298	ComputeScaleAndOrigin();
	299	};
	300
	301	void wxDC::GetInternalDeviceOrigin( long x, long y )
	302	{
	303	if (x) *x = m_internalDeviceOriginX;
	304	if (y) *y = m_internalDeviceOriginY;
	305	};
	306
	307	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	308	{
	309	m_signX = (xLeftRight ? 1 : -1);
	310	m_signY = (yBottomUp ? -1 : 1);
	311	ComputeScaleAndOrigin();
	312	};
	313
	314	long wxDC::DeviceToLogicalX(long x) const
	315	{
	316	return XDEV2LOG(x);
	317	};
	318
	319	long wxDC::DeviceToLogicalY(long y) const
	320	{
	321	return YDEV2LOG(y);
	322	};
	323
	324	long wxDC::DeviceToLogicalXRel(long x) const
	325	{
	326	return XDEV2LOGREL(x);
	327	};
	328
	329	long wxDC::DeviceToLogicalYRel(long y) const
	330	{
	331	return YDEV2LOGREL(y);
	332	};
	333
	334	long wxDC::LogicalToDeviceX(long x) const
	335	{
	336	return XLOG2DEV(x);
	337	};
	338
	339	long wxDC::LogicalToDeviceY(long y) const
	340	{
	341	return YLOG2DEV(y);
	342	};
	343
	344	long wxDC::LogicalToDeviceXRel(long x) const
	345	{
	346	return XLOG2DEVREL(x);
	347	};
	348
	349	long wxDC::LogicalToDeviceYRel(long y) const
	350	{
	351	return YLOG2DEVREL(y);
	352	};
	353
	354	void wxDC::CalcBoundingBox( long x, long y )
	355	{
	356	if (x < m_minX) m_minX = x;
	357	if (y < m_minY) m_minY = y;
	358	if (x > m_maxX) m_maxX = x;
	359	if (y > m_maxY) m_maxY = y;
	360	};
	361
	362	void wxDC::ComputeScaleAndOrigin(void)
	363	{
	364	// CMB: copy scale to see if it changes
	365	double origScaleX = m_scaleX;
	366	double origScaleY = m_scaleY;
	367
	368	m_scaleX = m_logicalScaleX * m_userScaleX;
	369	m_scaleY = m_logicalScaleY * m_userScaleY;
	370
	371	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	372	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	373
	374	// CMB: if scale has changed call SetPen to recalulate the line width
	375	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	376	{
	377	// this is a bit artificial, but we need to force wxDC to think
	378	// the pen has changed
	379	wxPen* pen = & GetPen();
	380	wxPen tempPen;
	381	m_pen = tempPen;
	382	SetPen(* pen);
	383	}
	384	};
	385