[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"

#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_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( wxList *points )
{
  DrawOpenSpline( points );
};

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
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"
	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;
4bb6408c JS	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_palette = wxAPP_COLOURMAP;
	85	};
	86
	87	wxDC::~wxDC(void)
	88	{
	89	};
	90
	91	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
	92	{
	93	};
	94
	95	void wxDC::DrawPoint( wxPoint& point )
	96	{
	97	DrawPoint( point.x, point.y );
	98	};
	99
	100	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	101	{
	102	int n = list->Number();
	103	wxPoint *points = new wxPoint[n];
	104
105	int i = 0;
106	for( wxNode *node = list->First(); node; node = node->Next() )
107	{
108	wxPoint point = (wxPoint )node->Data();
109	points[i].x = point->x;
110	points[i++].y = point->y;
111	};
112	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
113	delete[] points;
114	};
115
116	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
117	{
118	int n = list->Number();
119	wxPoint *points = new wxPoint[n];
120
121	int i = 0;
122	for( wxNode *node = list->First(); node; node = node->Next() )
123	{
124	wxPoint point = (wxPoint )node->Data();
125	points[i].x = point->x;
126	points[i++].y = point->y;
127	};
128	DrawLines( n, points, xoffset, yoffset );
129	delete []points;
130	};
131
132	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
133	{
134	wxList list;
135	list.Append( (wxObject*)new wxPoint(x1, y1) );
136	list.Append( (wxObject*)new wxPoint(x2, y2) );
137	list.Append( (wxObject*)new wxPoint(x3, y3) );
138	DrawSpline(&list);
139	wxNode *node = list.First();
140	while (node)
141	{
142	wxPoint p = (wxPoint)node->Data();
143	delete p;
144	node = node->Next();
145	};
146	};
147
148	void wxDC::DrawSpline( wxList *points )
149	{
150	DrawOpenSpline( points );
151	};
152
153	void wxDC::DrawSpline( int n, wxPoint points[] )
154	{
155	wxList list;
156	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
157	DrawSpline( &list );
158	};
159
160	void wxDC::SetClippingRegion( long x, long y, long width, long height )
161	{
162	m_clipping = TRUE;
163	m_clipX1 = x;
164	m_clipY1 = y;
165	m_clipX2 = x + width;
166	m_clipY2 = y + height;
167	};
168
169	void wxDC::DestroyClippingRegion(void)
170	{
171	m_clipping = FALSE;
172	};
173
174	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
175	{
176	if (m_clipping)
177	{
178	if (x) *x = m_clipX1;
179	if (y) *y = m_clipY1;
180	if (width) *width = (m_clipX2 - m_clipX1);
181	if (height) *height = (m_clipY2 - m_clipY1);
182	}
183	else
184	x = y = width = height = 0;
185	};
186
187	void wxDC::GetSize( int* width, int* height ) const
188	{
189	*width = m_maxX-m_minX;
190	*height = m_maxY-m_minY;
191	};
192
193	void wxDC::GetSizeMM( long* width, long* height ) const
194	{
195	int w = 0;
196	int h = 0;
197	GetSize( &w, &h );
198	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
199	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
200	};
201
202	void wxDC::SetTextForeground( const wxColour &col )
203	{
204	if (!Ok()) return;
205	m_textForegroundColour = col;
206	};
207
208	void wxDC::SetTextBackground( const wxColour &col )
209	{
210	if (!Ok()) return;
211	m_textBackgroundColour = col;
212	};
213
214	void wxDC::SetMapMode( int mode )
215	{
216	switch (mode)
217	{
218	case MM_TWIPS:
219	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
220	break;
221	case MM_POINTS:
222	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
223	break;
224	case MM_METRIC:
225	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
226	break;
227	case MM_LOMETRIC:
228	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
229	break;
230	default:
231	case MM_TEXT:
232	SetLogicalScale( 1.0, 1.0 );
233	break;
234	};
235	if (mode != MM_TEXT)
236	{
237	m_needComputeScaleX = TRUE;
238	m_needComputeScaleY = TRUE;
239	};
240	};
241
242	void wxDC::SetUserScale( double x, double y )
243	{
244	// allow negative ? -> no
245	m_userScaleX = x;
246	m_userScaleY = y;
247	ComputeScaleAndOrigin();
248	};
249
250	void wxDC::GetUserScale( double x, double y )
251	{
252	if (x) *x = m_userScaleX;
253	if (y) *y = m_userScaleY;
254	};
255
256	void wxDC::SetLogicalScale( double x, double y )
257	{
258	// allow negative ?
259	m_logicalScaleX = x;
260	m_logicalScaleY = y;
261	ComputeScaleAndOrigin();
262	};
263
264	void wxDC::GetLogicalScale( double x, double y )
265	{
266	if (x) *x = m_logicalScaleX;
267	if (y) *y = m_logicalScaleY;
268	};
269
270	void wxDC::SetLogicalOrigin( long x, long y )
271	{
272	m_logicalOriginX = x * m_signX; // is this still correct ?
273	m_logicalOriginY = y * m_signY;
274	ComputeScaleAndOrigin();
275	};
276
277	void wxDC::GetLogicalOrigin( long x, long y )
278	{
279	if (x) *x = m_logicalOriginX;
280	if (y) *y = m_logicalOriginY;
281	};
282
283	void wxDC::SetDeviceOrigin( long x, long y )
284	{
285	m_externalDeviceOriginX = x;
286	m_externalDeviceOriginY = y;
287	ComputeScaleAndOrigin();
288	};
289
290	void wxDC::GetDeviceOrigin( long x, long y )
291	{
292	// if (x) *x = m_externalDeviceOriginX;
293	// if (y) *y = m_externalDeviceOriginY;
294	if (x) *x = m_deviceOriginX;
295	if (y) *y = m_deviceOriginY;
296	};
297
298	void wxDC::SetInternalDeviceOrigin( long x, long y )
299	{
300	m_internalDeviceOriginX = x;
301	m_internalDeviceOriginY = y;
302	ComputeScaleAndOrigin();
303	};
304
305	void wxDC::GetInternalDeviceOrigin( long x, long y )
306	{
307	if (x) *x = m_internalDeviceOriginX;
308	if (y) *y = m_internalDeviceOriginY;
309	};
310
311	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
312	{
313	m_signX = (xLeftRight ? 1 : -1);
314	m_signY = (yBottomUp ? -1 : 1);
315	ComputeScaleAndOrigin();
316	};
317
318	long wxDC::DeviceToLogicalX(long x) const
319	{
320	return XDEV2LOG(x);
321	};
322
323	long wxDC::DeviceToLogicalY(long y) const
324	{
325	return YDEV2LOG(y);
326	};
327
328	long wxDC::DeviceToLogicalXRel(long x) const
329	{
330	return XDEV2LOGREL(x);
331	};
332
333	long wxDC::DeviceToLogicalYRel(long y) const
334	{
335	return YDEV2LOGREL(y);
336	};
337
338	long wxDC::LogicalToDeviceX(long x) const
339	{
340	return XLOG2DEV(x);
341	};
342
343	long wxDC::LogicalToDeviceY(long y) const
344	{
345	return YLOG2DEV(y);
346	};
347
348	long wxDC::LogicalToDeviceXRel(long x) const
349	{
350	return XLOG2DEVREL(x);
351	};
352
353	long wxDC::LogicalToDeviceYRel(long y) const
354	{
355	return YLOG2DEVREL(y);
356	};
357
358	void wxDC::CalcBoundingBox( long x, long y )
359	{
360	if (x < m_minX) m_minX = x;
361	if (y < m_minY) m_minY = y;
362	if (x > m_maxX) m_maxX = x;
363	if (y > m_maxY) m_maxY = y;
364	};
365
366	void wxDC::ComputeScaleAndOrigin(void)
367	{
368	// CMB: copy scale to see if it changes
369	double origScaleX = m_scaleX;
370	double origScaleY = m_scaleY;
371
372	m_scaleX = m_logicalScaleX * m_userScaleX;
373	m_scaleY = m_logicalScaleY * m_userScaleY;
374
375	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
376	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
377
378	// CMB: if scale has changed call SetPen to recalulate the line width
379	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
380	{
381	// this is a bit artificial, but we need to force wxDC to think
382	// the pen has changed
383	wxPen* pen = GetPen();
384	wxPen tempPen;
385	m_pen = tempPen;
386	SetPen(pen);
387	}
388	};
389