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"

IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)

//-----------------------------------------------------------------------------
// 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 = 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( 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 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	IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
	19
	20	//-----------------------------------------------------------------------------
	21	// constants
	22	//-----------------------------------------------------------------------------
	23
	24	#define mm2inches 0.0393700787402
	25	#define inches2mm 25.4
	26	#define mm2twips 56.6929133859
	27	#define twips2mm 0.0176388888889
	28	#define mm2pt 2.83464566929
	29	#define pt2mm 0.352777777778
	30
	31	//-----------------------------------------------------------------------------
	32	// wxDC
	33	//-----------------------------------------------------------------------------
	34
	35	IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject)
	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( wxList *points )
	150	{
	151	DrawOpenSpline( points );
	152	};
	153
	154	void wxDC::DrawSpline( int n, wxPoint points[] )
	155	{
	156	wxList list;
	157	for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
	158	DrawSpline( &list );
	159	};
	160
	161	void wxDC::SetClippingRegion( long x, long y, long width, long height )
	162	{
	163	m_clipping = TRUE;
	164	m_clipX1 = x;
	165	m_clipY1 = y;
	166	m_clipX2 = x + width;
	167	m_clipY2 = y + height;
	168	};
	169
	170	void wxDC::DestroyClippingRegion(void)
	171	{
	172	m_clipping = FALSE;
	173	};
	174
	175	void wxDC::GetClippingBox( long x, long y, long width, long height ) const
	176	{
	177	if (m_clipping)
	178	{
	179	if (x) *x = m_clipX1;
	180	if (y) *y = m_clipY1;
	181	if (width) *width = (m_clipX2 - m_clipX1);
	182	if (height) *height = (m_clipY2 - m_clipY1);
	183	}
	184	else
	185	x = y = width = height = 0;
	186	};
	187
	188	void wxDC::GetSize( int* width, int* height ) const
	189	{
	190	*width = m_maxX-m_minX;
	191	*height = m_maxY-m_minY;
	192	};
	193
	194	void wxDC::GetSizeMM( long* width, long* height ) const
	195	{
	196	int w = 0;
	197	int h = 0;
	198	GetSize( &w, &h );
	199	width = long( double(w) / (m_scaleXm_mm_to_pix_x) );
	200	height = long( double(h) / (m_scaleYm_mm_to_pix_y) );
	201	};
	202
	203	void wxDC::SetTextForeground( const wxColour &col )
	204	{
	205	if (!Ok()) return;
	206	m_textForegroundColour = col;
	207	};
	208
	209	void wxDC::SetTextBackground( const wxColour &col )
	210	{
	211	if (!Ok()) return;
	212	m_textBackgroundColour = col;
	213	};
	214
	215	void wxDC::SetMapMode( int mode )
	216	{
	217	switch (mode)
	218	{
	219	case wxMM_TWIPS:
	220	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
	221	break;
	222	case wxMM_POINTS:
	223	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
	224	break;
	225	case wxMM_METRIC:
	226	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
	227	break;
	228	case wxMM_LOMETRIC:
	229	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	230	break;
	231	default:
	232	case wxMM_TEXT:
	233	SetLogicalScale( 1.0, 1.0 );
	234	break;
	235	};
	236	if (mode != wxMM_TEXT)
	237	{
	238	m_needComputeScaleX = TRUE;
	239	m_needComputeScaleY = TRUE;
	240	};
	241	};
	242
	243	void wxDC::SetUserScale( double x, double y )
	244	{
	245	// allow negative ? -> no
	246	m_userScaleX = x;
	247	m_userScaleY = y;
	248	ComputeScaleAndOrigin();
	249	};
	250
	251	void wxDC::GetUserScale( double x, double y )
	252	{
	253	if (x) *x = m_userScaleX;
	254	if (y) *y = m_userScaleY;
	255	};
	256
	257	void wxDC::SetLogicalScale( double x, double y )
	258	{
	259	// allow negative ?
	260	m_logicalScaleX = x;
	261	m_logicalScaleY = y;
	262	ComputeScaleAndOrigin();
	263	};
	264
	265	void wxDC::GetLogicalScale( double x, double y )
	266	{
	267	if (x) *x = m_logicalScaleX;
	268	if (y) *y = m_logicalScaleY;
	269	};
	270
	271	void wxDC::SetLogicalOrigin( long x, long y )
	272	{
	273	m_logicalOriginX = x * m_signX; // is this still correct ?
	274	m_logicalOriginY = y * m_signY;
	275	ComputeScaleAndOrigin();
	276	};
	277
	278	void wxDC::GetLogicalOrigin( long x, long y )
	279	{
	280	if (x) *x = m_logicalOriginX;
	281	if (y) *y = m_logicalOriginY;
	282	};
	283
	284	void wxDC::SetDeviceOrigin( long x, long y )
	285	{
	286	m_externalDeviceOriginX = x;
	287	m_externalDeviceOriginY = y;
	288	ComputeScaleAndOrigin();
	289	};
	290
	291	void wxDC::GetDeviceOrigin( long x, long y )
	292	{
	293	// if (x) *x = m_externalDeviceOriginX;
	294	// if (y) *y = m_externalDeviceOriginY;
	295	if (x) *x = m_deviceOriginX;
	296	if (y) *y = m_deviceOriginY;
	297	};
	298
	299	void wxDC::SetInternalDeviceOrigin( long x, long y )
	300	{
	301	m_internalDeviceOriginX = x;
	302	m_internalDeviceOriginY = y;
	303	ComputeScaleAndOrigin();
	304	};
	305
	306	void wxDC::GetInternalDeviceOrigin( long x, long y )
	307	{
	308	if (x) *x = m_internalDeviceOriginX;
	309	if (y) *y = m_internalDeviceOriginY;
	310	};
	311
	312	void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
	313	{
	314	m_signX = (xLeftRight ? 1 : -1);
	315	m_signY = (yBottomUp ? -1 : 1);
	316	ComputeScaleAndOrigin();
	317	};
	318
	319	long wxDC::DeviceToLogicalX(long x) const
	320	{
	321	return XDEV2LOG(x);
	322	};
	323
	324	long wxDC::DeviceToLogicalY(long y) const
	325	{
	326	return YDEV2LOG(y);
	327	};
	328
	329	long wxDC::DeviceToLogicalXRel(long x) const
	330	{
	331	return XDEV2LOGREL(x);
	332	};
	333
	334	long wxDC::DeviceToLogicalYRel(long y) const
	335	{
	336	return YDEV2LOGREL(y);
	337	};
	338
	339	long wxDC::LogicalToDeviceX(long x) const
	340	{
	341	return XLOG2DEV(x);
	342	};
	343
	344	long wxDC::LogicalToDeviceY(long y) const
	345	{
	346	return YLOG2DEV(y);
	347	};
	348
	349	long wxDC::LogicalToDeviceXRel(long x) const
	350	{
	351	return XLOG2DEVREL(x);
	352	};
	353
	354	long wxDC::LogicalToDeviceYRel(long y) const
	355	{
	356	return YLOG2DEVREL(y);
	357	};
	358
	359	void wxDC::CalcBoundingBox( long x, long y )
	360	{
	361	if (x < m_minX) m_minX = x;
	362	if (y < m_minY) m_minY = y;
	363	if (x > m_maxX) m_maxX = x;
	364	if (y > m_maxY) m_maxY = y;
	365	};
	366
	367	void wxDC::ComputeScaleAndOrigin(void)
	368	{
	369	// CMB: copy scale to see if it changes
	370	double origScaleX = m_scaleX;
	371	double origScaleY = m_scaleY;
	372
	373	m_scaleX = m_logicalScaleX * m_userScaleX;
	374	m_scaleY = m_logicalScaleY * m_userScaleY;
	375
	376	m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
	377	m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
	378
	379	// CMB: if scale has changed call SetPen to recalulate the line width
	380	if (m_scaleX != origScaleX \|\| m_scaleY != origScaleY)
	381	{
	382	// this is a bit artificial, but we need to force wxDC to think
	383	// the pen has changed
	384	wxPen* pen = GetPen();
	385	wxPen tempPen;
	386	m_pen = tempPen;
	387	SetPen(pen);
	388	}
	389	};
	390