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 = 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	#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	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 = wxMM_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
	94	void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
	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 wxMM_TWIPS:
	222	SetLogicalScale( twips2mmm_mm_to_pix_x, twips2mmm_mm_to_pix_y );
	223	break;
	224	case wxMM_POINTS:
	225	SetLogicalScale( pt2mmm_mm_to_pix_x, pt2mmm_mm_to_pix_y );
	226	break;
	227	case wxMM_METRIC:
	228	SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
	229	break;
	230	case wxMM_LOMETRIC:
	231	SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
	232	break;
	233	default:
	234	case wxMM_TEXT:
	235	SetLogicalScale( 1.0, 1.0 );
	236	break;
	237	};
	238	if (mode != wxMM_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