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"

#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), 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 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
	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"
	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_colour = TRUE;
	42	m_clipping = FALSE;
	43
	44	m_mm_to_pix_x = 1.0;
	45	m_mm_to_pix_y = 1.0;
	46
	47	m_logicalOriginX = 0;
	48	m_logicalOriginY = 0;
	49	m_deviceOriginX = 0;
	50	m_deviceOriginY = 0;
	51	m_internalDeviceOriginX = 0;
	52	m_internalDeviceOriginY = 0;
	53	m_externalDeviceOriginX = 0;
	54	m_externalDeviceOriginY = 0;
	55
	56	m_logicalScaleX = 1.0;
	57	m_logicalScaleY = 1.0;
	58	m_userScaleX = 1.0;
	59	m_userScaleY = 1.0;
	60	m_scaleX = 1.0;
	61	m_scaleY = 1.0;
	62
	63	m_mappingMode = MM_TEXT;
	64	m_needComputeScaleX = FALSE;
	65	m_needComputeScaleY = FALSE;
	66
	67	m_signX = 1; // default x-axis left to right
	68	m_signY = 1; // default y-axis top down
	69
	70	m_maxX = m_maxY = -100000;
	71	m_minY = m_minY = 100000;
	72
	73	m_logicalFunction = wxCOPY;
	74	// m_textAlignment = wxALIGN_TOP_LEFT;
	75	m_backgroundMode = wxTRANSPARENT;
	76
	77	m_textForegroundColour = *wxBLACK;
	78	m_textBackgroundColour = *wxWHITE;
	79	m_pen = *wxBLACK_PEN;
	80	m_font = *wxNORMAL_FONT;
	81	m_brush = *wxTRANSPARENT_BRUSH;
	82	m_backgroundBrush = *wxWHITE_BRUSH;
	83
	84	m_isInteractive = FALSE;
	85
	86	// m_palette = wxAPP_COLOURMAP;
	87	};
	88
	89	wxDC::~wxDC(void)
	90	{
	91	};
	92
	93	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
	94	{
	95	};
	96
	97	void wxDC::DrawPoint( wxPoint& point )
	98	{
	99	DrawPoint( point.x, point.y );
	100	};
	101
	102	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	103	{
	104	int n = list->Number();
	105	wxPoint *points = new wxPoint[n];
	106
	107	int i = 0;
	108	for( wxNode *node = list->First(); node; node = node->Next() )
	109	{
	110	wxPoint point = (wxPoint )node->Data();
	111	points[i].x = point->x;
	112	points[i++].y = point->y;
	113	};
	114	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
	115	delete[] points;
	116	};
	117
	118	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
	119	{
	120	int n = list->Number();
	121	wxPoint *points = new wxPoint[n];
	122
	123	int i = 0;
	124	for( wxNode *node = list->First(); node; node = node->Next() )
	125	{
	126	wxPoint point = (wxPoint )node->Data();
	127	points[i].x = point->x;
	128	points[i++].y = point->y;
	129	};
	130	DrawLines( n, points, xoffset, yoffset );
	131	delete []points;
	132	};
	133
	134	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
	135	{
	136	wxList list;
	137	list.Append( (wxObject*)new wxPoint(x1, y1) );
	138	list.Append( (wxObject*)new wxPoint(x2, y2) );
	139	list.Append( (wxObject*)new wxPoint(x3, y3) );
	140	DrawSpline(&list);
	141	wxNode *node = list.First();
	142	while (node)
	143	{
	144	wxPoint p = (wxPoint)node->Data();
	145	delete p;
	146	node = node->Next();
	147	};
	148	};
	149
	150	void wxDC::DrawSpline( int n, wxPoint points[] )
	151	{
	152	wxList list;
	153	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
	154	DrawSpline( &list );
	155	};
	156
	157	void wxDC::SetClippingRegion( long x, long y, long width, long height )
	158	{
	159	m_clipping = TRUE;
	160	m_clipX1 = x;
	161	m_clipY1 = y;
	162	m_clipX2 = x + width;
	163	m_clipY2 = y + height;
	164	};
	165
	166	void wxDC::DestroyClippingRegion(void)
	167	{
	168	m_clipping = FALSE;
	169	};
	170
	171	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
	172	{
	173	if (m_clipping)
	174	{
	175	if (x) *x = m_clipX1;
	176	if (y) *y = m_clipY1;
	177	if (width) *width = (m_clipX2 - m_clipX1);
	178	if (height) *height = (m_clipY2 - m_clipY1);
	179	}
	180	else
	181	x = y = width = height = 0;
	182	};
	183
	184	void wxDC::GetSize( int* width, int* height ) const
	185	{
	186	*width = m_maxX-m_minX;
	187	*height = m_maxY-m_minY;
	188	};
	189
	190	void wxDC::GetSizeMM( long* width, long* height ) const
	191	{
	192	int w = 0;
	193	int h = 0;
	194	GetSize( &w, &h );
	195	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
	196	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
	197	};
	198
	199	void wxDC::SetTextForeground( const wxColour &col )
	200	{
	201	if (!Ok()) return;
	202	m_textForegroundColour = col;
	203	};
	204
	205	void wxDC::SetTextBackground( const wxColour &col )
	206	{
	207	if (!Ok()) return;
	208	m_textBackgroundColour = col;
	209	};
	210
	211	void wxDC::SetMapMode( int mode )
	212	{
	213	switch (mode)
	214	{
	215	case MM_TWIPS:
	216	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
	217	break;
	218	case MM_POINTS:
	219	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
	220	break;
	221	case MM_METRIC:
	222	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
	223	break;
	224	case MM_LOMETRIC:
	225	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	226	break;
	227	default:
	228	case MM_TEXT:
	229	SetLogicalScale( 1.0, 1.0 );
	230	break;
	231	};
	232	if (mode != MM_TEXT)
	233	{
	234	m_needComputeScaleX = TRUE;
	235	m_needComputeScaleY = TRUE;
	236	};
	237	};
	238
	239	void wxDC::SetUserScale( double x, double y )
	240	{
	241	// allow negative ? -> no
	242	m_userScaleX = x;
	243	m_userScaleY = y;
	244	ComputeScaleAndOrigin();
	245	};
	246
	247	void wxDC::GetUserScale( double x, double y )
	248	{
	249	if (x) *x = m_userScaleX;
	250	if (y) *y = m_userScaleY;
	251	};
	252
	253	void wxDC::SetLogicalScale( double x, double y )
	254	{
	255	// allow negative ?
	256	m_logicalScaleX = x;
	257	m_logicalScaleY = y;
	258	ComputeScaleAndOrigin();
	259	};
	260
	261	void wxDC::GetLogicalScale( double x, double y )
	262	{
	263	if (x) *x = m_logicalScaleX;
	264	if (y) *y = m_logicalScaleY;
	265	};
	266
	267	void wxDC::SetLogicalOrigin( long x, long y )
	268	{
	269	m_logicalOriginX = x * m_signX; // is this still correct ?
	270	m_logicalOriginY = y * m_signY;
	271	ComputeScaleAndOrigin();
	272	};
	273
	274	void wxDC::GetLogicalOrigin( long x, long y )
	275	{
	276	if (x) *x = m_logicalOriginX;
	277	if (y) *y = m_logicalOriginY;
	278	};
	279
	280	void wxDC::SetDeviceOrigin( long x, long y )
	281	{
	282	m_externalDeviceOriginX = x;
	283	m_externalDeviceOriginY = y;
	284	ComputeScaleAndOrigin();
	285	};
	286
	287	void wxDC::GetDeviceOrigin( long x, long y )
	288	{
	289	// if (x) *x = m_externalDeviceOriginX;
	290	// if (y) *y = m_externalDeviceOriginY;
	291	if (x) *x = m_deviceOriginX;
	292	if (y) *y = m_deviceOriginY;
	293	};
	294
	295	void wxDC::SetInternalDeviceOrigin( long x, long y )
	296	{
	297	m_internalDeviceOriginX = x;
	298	m_internalDeviceOriginY = y;
	299	ComputeScaleAndOrigin();
	300	};
	301
	302	void wxDC::GetInternalDeviceOrigin( long x, long y )
	303	{
	304	if (x) *x = m_internalDeviceOriginX;
	305	if (y) *y = m_internalDeviceOriginY;
	306	};
	307
	308	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	309	{
	310	m_signX = (xLeftRight ? 1 : -1);
	311	m_signY = (yBottomUp ? -1 : 1);
	312	ComputeScaleAndOrigin();
	313	};
	314
	315	long wxDC::DeviceToLogicalX(long x) const
	316	{
	317	return XDEV2LOG(x);
	318	};
	319
	320	long wxDC::DeviceToLogicalY(long y) const
	321	{
	322	return YDEV2LOG(y);
	323	};
	324
	325	long wxDC::DeviceToLogicalXRel(long x) const
	326	{
	327	return XDEV2LOGREL(x);
	328	};
	329
	330	long wxDC::DeviceToLogicalYRel(long y) const
	331	{
	332	return YDEV2LOGREL(y);
	333	};
	334
	335	long wxDC::LogicalToDeviceX(long x) const
	336	{
	337	return XLOG2DEV(x);
	338	};
	339
	340	long wxDC::LogicalToDeviceY(long y) const
	341	{
	342	return YLOG2DEV(y);
	343	};
	344
	345	long wxDC::LogicalToDeviceXRel(long x) const
	346	{
	347	return XLOG2DEVREL(x);
	348	};
	349
	350	long wxDC::LogicalToDeviceYRel(long y) const
	351	{
	352	return YLOG2DEVREL(y);
	353	};
	354
	355	void wxDC::CalcBoundingBox( long x, long y )
	356	{
	357	if (x < m_minX) m_minX = x;
	358	if (y < m_minY) m_minY = y;
	359	if (x > m_maxX) m_maxX = x;
	360	if (y > m_maxY) m_maxY = y;
	361	};
	362
	363	void wxDC::ComputeScaleAndOrigin(void)
	364	{
	365	// CMB: copy scale to see if it changes
	366	double origScaleX = m_scaleX;
	367	double origScaleY = m_scaleY;
	368
	369	m_scaleX = m_logicalScaleX * m_userScaleX;
	370	m_scaleY = m_logicalScaleY * m_userScaleY;
	371
	372	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	373	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	374
	375	// CMB: if scale has changed call SetPen to recalulate the line width
	376	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	377	{
	378	// this is a bit artificial, but we need to force wxDC to think
	379	// the pen has changed
	380	wxPen* pen = GetPen();
	381	wxPen tempPen;
	382	m_pen = tempPen;
	383	SetPen(pen);
	384	}
	385	};
	386