[wxWidgets.git] / src / mac / 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
e9576ca5 SC	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
e3065973	64	m_mappingMode = wxMM_TEXT;
e9576ca5 SC	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	{
e3065973	214	case wxMM_TWIPS:
e9576ca5 SC	215	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
e9576ca5 SC	216	break;
e3065973	217	case wxMM_POINTS:
e9576ca5 SC	218	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
e9576ca5 SC	219	break;
e3065973	220	case wxMM_METRIC:
e9576ca5 SC	221	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
e9576ca5 SC	222	break;
e3065973	223	case wxMM_LOMETRIC:
e9576ca5 SC	224	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	225	break;
	226	default:
e3065973	227	case wxMM_TEXT:
e9576ca5 SC	228	SetLogicalScale( 1.0, 1.0 );
	229	break;
	230	};
e3065973	231	if (mode != wxMM_TEXT)
e9576ca5 SC	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