[wxWidgets.git] / src / qt / 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
//-----------------------------------------------------------------------------

IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject)

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 = 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
7c78e7c7 RR	1	/////////////////////////////////////////////////////////////////////////////
7c78e7c7 RR	2	// Name: dc.cpp
01b2eeec KB	3	// Purpose: wxDC class
	4	// Author: AUTHOR
	5	// Modified by:
7c78e7c7 RR	6	// Created: 01/02/97
7c78e7c7 RR	7	// RCS-ID: $Id$
01b2eeec	8	// Copyright: (c) AUTHOR
7c78e7c7 RR	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
7c78e7c7 RR	12	#ifdef __GNUG__
	13	#pragma implementation "dc.h"
	14	#endif
	15
	16	#include "wx/dc.h"
	17
01b2eeec KB	18	#if !USE_SHARED_LIBRARY
	19	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	20	#endif
	21
7c78e7c7 RR	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	IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject)
	38
	39	wxDC::wxDC(void)
	40	{
	41	m_ok = FALSE;
	42	m_optimize = FALSE;
	43	m_autoSetting = FALSE;
	44	m_colour = TRUE;
	45	m_clipping = FALSE;
	46
	47	m_mm_to_pix_x = 1.0;
	48	m_mm_to_pix_y = 1.0;
	49
	50	m_logicalOriginX = 0;
	51	m_logicalOriginY = 0;
	52	m_deviceOriginX = 0;
	53	m_deviceOriginY = 0;
	54	m_internalDeviceOriginX = 0;
	55	m_internalDeviceOriginY = 0;
	56	m_externalDeviceOriginX = 0;
	57	m_externalDeviceOriginY = 0;
	58
	59	m_logicalScaleX = 1.0;
	60	m_logicalScaleY = 1.0;
	61	m_userScaleX = 1.0;
	62	m_userScaleY = 1.0;
	63	m_scaleX = 1.0;
	64	m_scaleY = 1.0;
	65
	66	m_mappingMode = MM_TEXT;
	67	m_needComputeScaleX = FALSE;
	68	m_needComputeScaleY = FALSE;
	69
	70	m_signX = 1; // default x-axis left to right
	71	m_signY = 1; // default y-axis top down
	72
	73	m_maxX = m_maxY = -100000;
	74	m_minY = m_minY = 100000;
	75
	76	m_logicalFunction = wxCOPY;
	77	// m_textAlignment = wxALIGN_TOP_LEFT;
	78	m_backgroundMode = wxTRANSPARENT;
	79
	80	m_textForegroundColour = *wxBLACK;
	81	m_textBackgroundColour = *wxWHITE;
	82	m_pen = *wxBLACK_PEN;
	83	m_font = *wxNORMAL_FONT;
	84	m_brush = *wxTRANSPARENT_BRUSH;
	85	m_backgroundBrush = *wxWHITE_BRUSH;
86
87	// m_palette = wxAPP_COLOURMAP;
88	};
89
90	wxDC::~wxDC(void)
91	{
92	};
93
01b2eeec	94	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
7c78e7c7 RR	95	{
	96	};
	97
	98	void wxDC::DrawPoint( wxPoint& point )
	99	{
	100	DrawPoint( point.x, point.y );
	101	};
	102
	103	void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
	104	{
	105	int n = list->Number();
	106	wxPoint *points = new wxPoint[n];
	107
	108	int i = 0;
	109	for( wxNode *node = list->First(); node; node = node->Next() )
	110	{
	111	wxPoint point = (wxPoint )node->Data();
	112	points[i].x = point->x;
	113	points[i++].y = point->y;
	114	};
	115	DrawPolygon( n, points, xoffset, yoffset, fillStyle );
	116	delete[] points;
	117	};
	118
	119	void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
	120	{
	121	int n = list->Number();
	122	wxPoint *points = new wxPoint[n];
	123
	124	int i = 0;
	125	for( wxNode *node = list->First(); node; node = node->Next() )
	126	{
	127	wxPoint point = (wxPoint )node->Data();
	128	points[i].x = point->x;
	129	points[i++].y = point->y;
	130	};
	131	DrawLines( n, points, xoffset, yoffset );
	132	delete []points;
	133	};
	134
	135	void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
	136	{
	137	wxList list;
	138	list.Append( (wxObject*)new wxPoint(x1, y1) );
	139	list.Append( (wxObject*)new wxPoint(x2, y2) );
	140	list.Append( (wxObject*)new wxPoint(x3, y3) );
	141	DrawSpline(&list);
	142	wxNode *node = list.First();
	143	while (node)
	144	{
	145	wxPoint p = (wxPoint)node->Data();
	146	delete p;
	147	node = node->Next();
	148	};
	149	};
	150
	151	void wxDC::DrawSpline( wxList *points )
	152	{
	153	DrawOpenSpline( points );
	154	};
	155
	156	void wxDC::DrawSpline( int n, wxPoint points[] )
	157	{
	158	wxList list;
159	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
160	DrawSpline( &list );
161	};
162
163	void wxDC::SetClippingRegion( long x, long y, long width, long height )
164	{
165	m_clipping = TRUE;
166	m_clipX1 = x;
167	m_clipY1 = y;
168	m_clipX2 = x + width;
169	m_clipY2 = y + height;
170	};
171
172	void wxDC::DestroyClippingRegion(void)
173	{
174	m_clipping = FALSE;
175	};
176
177	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
178	{
179	if (m_clipping)
180	{
181	if (x) *x = m_clipX1;
182	if (y) *y = m_clipY1;
183	if (width) *width = (m_clipX2 - m_clipX1);
184	if (height) *height = (m_clipY2 - m_clipY1);
185	}
186	else
187	x = y = width = height = 0;
188	};
189
190	void wxDC::GetSize( int* width, int* height ) const
191	{
192	*width = m_maxX-m_minX;
193	*height = m_maxY-m_minY;
194	};
195
196	void wxDC::GetSizeMM( long* width, long* height ) const
197	{
198	int w = 0;
199	int h = 0;
200	GetSize( &w, &h );
201	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
202	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
203	};
204
205	void wxDC::SetTextForeground( const wxColour &col )
206	{
207	if (!Ok()) return;
208	m_textForegroundColour = col;
209	};
210
211	void wxDC::SetTextBackground( const wxColour &col )
212	{
213	if (!Ok()) return;
214	m_textBackgroundColour = col;
215	};
216
217	void wxDC::SetMapMode( int mode )
218	{
219	switch (mode)
220	{
221	case MM_TWIPS:
222	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
223	break;
224	case MM_POINTS:
225	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
226	break;
227	case MM_METRIC:
228	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
229	break;
230	case MM_LOMETRIC:
231	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
232	break;
233	default:
234	case MM_TEXT:
235	SetLogicalScale( 1.0, 1.0 );
236	break;
237	};
238	if (mode != MM_TEXT)
239	{
240	m_needComputeScaleX = TRUE;
241	m_needComputeScaleY = TRUE;
242	};
243	};
244
245	void wxDC::SetUserScale( double x, double y )
246	{
247	// allow negative ? -> no
248	m_userScaleX = x;
249	m_userScaleY = y;
250	ComputeScaleAndOrigin();
251	};
252
253	void wxDC::GetUserScale( double x, double y )
254	{
255	if (x) *x = m_userScaleX;
256	if (y) *y = m_userScaleY;
257	};
258
259	void wxDC::SetLogicalScale( double x, double y )
260	{
261	// allow negative ?
262	m_logicalScaleX = x;
263	m_logicalScaleY = y;
264	ComputeScaleAndOrigin();
265	};
266
267	void wxDC::GetLogicalScale( double x, double y )
268	{
269	if (x) *x = m_logicalScaleX;
270	if (y) *y = m_logicalScaleY;
271	};
272
273	void wxDC::SetLogicalOrigin( long x, long y )
274	{
275	m_logicalOriginX = x * m_signX; // is this still correct ?
276	m_logicalOriginY = y * m_signY;
277	ComputeScaleAndOrigin();
278	};
279
280	void wxDC::GetLogicalOrigin( long x, long y )
281	{
282	if (x) *x = m_logicalOriginX;
283	if (y) *y = m_logicalOriginY;
284	};
285
286	void wxDC::SetDeviceOrigin( long x, long y )
287	{
288	m_externalDeviceOriginX = x;
289	m_externalDeviceOriginY = y;
290	ComputeScaleAndOrigin();
291	};
292
293	void wxDC::GetDeviceOrigin( long x, long y )
294	{
295	// if (x) *x = m_externalDeviceOriginX;
296	// if (y) *y = m_externalDeviceOriginY;
297	if (x) *x = m_deviceOriginX;
298	if (y) *y = m_deviceOriginY;
299	};
300
301	void wxDC::SetInternalDeviceOrigin( long x, long y )
302	{
303	m_internalDeviceOriginX = x;
304	m_internalDeviceOriginY = y;
305	ComputeScaleAndOrigin();
306	};
307
308	void wxDC::GetInternalDeviceOrigin( long x, long y )
309	{
310	if (x) *x = m_internalDeviceOriginX;
311	if (y) *y = m_internalDeviceOriginY;
312	};
313
314	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
315	{
316	m_signX = (xLeftRight ? 1 : -1);
317	m_signY = (yBottomUp ? -1 : 1);
318	ComputeScaleAndOrigin();
319	};
320
321	long wxDC::DeviceToLogicalX(long x) const
322	{
323	return XDEV2LOG(x);
324	};
325
326	long wxDC::DeviceToLogicalY(long y) const
327	{
328	return YDEV2LOG(y);
329	};
330
331	long wxDC::DeviceToLogicalXRel(long x) const
332	{
333	return XDEV2LOGREL(x);
334	};
335
336	long wxDC::DeviceToLogicalYRel(long y) const
337	{
338	return YDEV2LOGREL(y);
339	};
340
341	long wxDC::LogicalToDeviceX(long x) const
342	{
343	return XLOG2DEV(x);
344	};
345
346	long wxDC::LogicalToDeviceY(long y) const
347	{
348	return YLOG2DEV(y);
349	};
350
351	long wxDC::LogicalToDeviceXRel(long x) const
352	{
353	return XLOG2DEVREL(x);
354	};
355
356	long wxDC::LogicalToDeviceYRel(long y) const
357	{
358	return YLOG2DEVREL(y);
359	};
360
361	void wxDC::CalcBoundingBox( long x, long y )
362	{
363	if (x < m_minX) m_minX = x;
364	if (y < m_minY) m_minY = y;
365	if (x > m_maxX) m_maxX = x;
366	if (y > m_maxY) m_maxY = y;
367	};
368
369	void wxDC::ComputeScaleAndOrigin(void)
370	{
371	// CMB: copy scale to see if it changes
372	double origScaleX = m_scaleX;
373	double origScaleY = m_scaleY;
374
375	m_scaleX = m_logicalScaleX * m_userScaleX;
376	m_scaleY = m_logicalScaleY * m_userScaleY;
377
378	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
379	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
380
381	// CMB: if scale has changed call SetPen to recalulate the line width
382	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
383	{
384	// this is a bit artificial, but we need to force wxDC to think
385	// the pen has changed
386	wxPen* pen = GetPen();
387	wxPen tempPen;
388	m_pen = tempPen;
389	SetPen(pen);
390	}
391	};
392