src/qt/dcclient.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        dcclient.cpp
// Purpose:     wxClientDC class
// Author:      AUTHOR
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) AUTHOR
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "dcclient.h"
#endif

#include "wx/dcclient.h"
#include "wx/dcmemory.h"
#include <math.h>

//-----------------------------------------------------------------------------
// constants
//-----------------------------------------------------------------------------

#define RAD2DEG 57.2957795131

//-----------------------------------------------------------------------------
// wxPaintDC
//-----------------------------------------------------------------------------

//IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxDC)
//IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxDC)


wxPaintDC::wxPaintDC(void)
{
};

wxPaintDC::wxPaintDC( wxWindow *window )
{
};

wxPaintDC::~wxPaintDC(void)
{
};

void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1),
  wxColour *WXUNUSED(col), int WXUNUSED(style) )
{
};

bool wxPaintDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
{
  return FALSE;
};

void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 )
{
  if (!Ok()) return;

};

void wxPaintDC::CrossHair( long x, long y )
{
  if (!Ok()) return;

};

void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double yc )
{
  if (!Ok()) return;

  long xx1 = XLOG2DEV(x1);
  long yy1 = YLOG2DEV(y1);
  long xx2 = XLOG2DEV(x2);
  long yy2 = YLOG2DEV(y2);
  long xxc = XLOG2DEV((long)xc);
  long yyc = YLOG2DEV((long)yc);
  double dx = xx1 - xxc;
  double dy = yy1 - yyc;
  double radius = sqrt(dx*dx+dy*dy);
  long   r      = (long)radius;
  double radius1, radius2;

  if (xx1 == xx2 && yy1 == yy2)
  {
    radius1 = 0.0;
    radius2 = 360.0;
  }
  else
  if (radius == 0.0)
  {
    radius1 = radius2 = 0.0;
  }
  else
  {
    radius1 = (xx1 - xxc == 0) ?
	    (yy1 - yyc < 0) ? 90.0 : -90.0 :
	    -atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
    radius2 = (xx2 - xxc == 0) ?
	    (yy2 - yyc < 0) ? 90.0 : -90.0 :
	    -atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
  };
  long alpha1 = long(radius1 * 64.0);
  long alpha2 = long((radius2 - radius1) * 64.0);
  while (alpha2 <= 0) alpha2 += 360*64;
  while (alpha1 > 360*64) alpha1 -= 360*64;

  if (m_brush.GetStyle() != wxTRANSPARENT) {};

  if (m_pen.GetStyle() != wxTRANSPARENT) {};

};

void wxPaintDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
{
  if (!Ok()) return;

  long xx = XLOG2DEV(x);
  long yy = YLOG2DEV(y);
  long ww = m_signX * XLOG2DEVREL(width);
  long hh = m_signY * YLOG2DEVREL(height);

  // CMB: handle -ve width and/or height
  if (ww < 0) { ww = -ww; xx = xx - ww; }
  if (hh < 0) { hh = -hh; yy = yy - hh; }

  long start = long(sa * 64.0);
  long end = long(ea * 64.0);
  if (m_brush.GetStyle() != wxTRANSPARENT) {};

  if (m_pen.GetStyle() != wxTRANSPARENT) {};
};

void wxPaintDC::DrawPoint( long x, long y )
{
  if (!Ok()) return;

  if (m_pen.GetStyle() != wxTRANSPARENT) {};
};

void wxPaintDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
{
  if (!Ok()) return;

  if (m_pen.GetStyle() == wxTRANSPARENT) return;

  for (int i = 0; i < n-1; i++)
  {
    long x1 = XLOG2DEV(points[i].x + xoffset);
    long x2 = XLOG2DEV(points[i+1].x + xoffset);
    long y1 = YLOG2DEV(points[i].y + yoffset);     // oh, what a waste
    long y2 = YLOG2DEV(points[i+1].y + yoffset);
  };
};

void wxPaintDC::DrawLines( wxList *points, long xoffset, long yoffset )
{
  if (!Ok()) return;

  if (m_pen.GetStyle() == wxTRANSPARENT) return;

  wxNode *node = points->First();
  while (node->Next())
  {
    wxPoint *point = (wxPoint*)node->Data();
    wxPoint *npoint = (wxPoint*)node->Next()->Data();
    long x1 = XLOG2DEV(point->x + xoffset);
    long x2 = XLOG2DEV(npoint->x + xoffset);
    long y1 = YLOG2DEV(point->y + yoffset);    // and again...
    long y2 = YLOG2DEV(npoint->y + yoffset);
    node = node->Next();
  };
};

void wxPaintDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[],
  long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
{
  if (!Ok()) return;
};

void wxPaintDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset),
                             long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
{
  if (!Ok()) return;
};

void wxPaintDC::DrawRectangle( long x, long y, long width, long height )
{
  if (!Ok()) return;

  long xx = XLOG2DEV(x);
  long yy = YLOG2DEV(y);
  long ww = m_signX * XLOG2DEVREL(width);
  long hh = m_signY * YLOG2DEVREL(height);

  // CMB: draw nothing if transformed w or h is 0
  if (ww == 0 || hh == 0) return;

  // CMB: handle -ve width and/or height
  if (ww < 0) { ww = -ww; xx = xx - ww; }
  if (hh < 0) { hh = -hh; yy = yy - hh; }

  if (m_brush.GetStyle() != wxTRANSPARENT) {};

  if (m_pen.GetStyle() != wxTRANSPARENT) {};
};

void wxPaintDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius )
{
  if (!Ok()) return;

  if (radius < 0.0) radius = - radius * ((width < height) ? width : height);

  long xx = XLOG2DEV(x);
  long yy = YLOG2DEV(y);
  long ww = m_signX * XLOG2DEVREL(width);
  long hh = m_signY * YLOG2DEVREL(height);
  long rr = XLOG2DEVREL((long)radius);

  // CMB: handle -ve width and/or height
  if (ww < 0) { ww = -ww; xx = xx - ww; }
  if (hh < 0) { hh = -hh; yy = yy - hh; }

  // CMB: if radius is zero use DrawRectangle() instead to avoid
  // X drawing errors with small radii
  if (rr == 0)
  {
    DrawRectangle( x, y, width, height );
    return;
  }

  // CMB: draw nothing if transformed w or h is 0
  if (ww == 0 || hh == 0) return;

  // CMB: adjust size if outline is drawn otherwise the result is
  // 1 pixel too wide and high
  if (m_pen.GetStyle() != wxTRANSPARENT)
  {
    ww--;
    hh--;
  }

  // CMB: ensure dd is not larger than rectangle otherwise we
  // get an hour glass shape
  long dd = 2 * rr;
  if (dd > ww) dd = ww;
  if (dd > hh) dd = hh;
  rr = dd / 2;

  if (m_brush.GetStyle() != wxTRANSPARENT)
  {
  };

  if (m_pen.GetStyle() != wxTRANSPARENT)
  {
  };
};

void wxPaintDC::DrawEllipse( long x, long y, long width, long height )
{
  if (!Ok()) return;

  long xx = XLOG2DEV(x);
  long yy = YLOG2DEV(y);
  long ww = m_signX * XLOG2DEVREL(width);
  long hh = m_signY * YLOG2DEVREL(height);

  // CMB: handle -ve width and/or height
  if (ww < 0) { ww = -ww; xx = xx - ww; }
  if (hh < 0) { hh = -hh; yy = yy - hh; }

  if (m_brush.GetStyle() != wxTRANSPARENT) {};

  if (m_pen.GetStyle() != wxTRANSPARENT) {};
};

bool wxPaintDC::CanDrawBitmap(void) const
{
  return TRUE;
};

void wxPaintDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
{
  if (!Ok()) return;

  if (!icon.Ok()) return;

  int xx = XLOG2DEV(x);
  int yy = YLOG2DEV(y);

};

bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
       wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) )
{
  if (!Ok()) return FALSE;

  // CMB 20/5/98: add blitting of bitmaps
  if (source->IsKindOf(CLASSINFO(wxMemoryDC)))
  {
    wxMemoryDC* srcDC = (wxMemoryDC*)source;
    /*
     GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
    if (bmap)
    {
      gdk_draw_bitmap (
          m_window,
          m_textGC,
          bmap,
          source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc),
          XLOG2DEV(xdest), YLOG2DEV(ydest),
          source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height)
          );
      return TRUE;
    }
    */
  }

  return TRUE;
};

void wxPaintDC::DrawText( const wxString &text, long x, long y, bool
WXUNUSED(use16) )
{
  if (!Ok()) return;

};


bool wxPaintDC::CanGetTextExtent(void) const
{
  return TRUE;
};

void wxPaintDC::GetTextExtent( const wxString &string, long *width, long *height,
                     long *WXUNUSED(descent), long *WXUNUSED(externalLeading),
                     wxFont *WXUNUSED(theFont), bool WXUNUSED(use16) )
{
  if (!Ok()) return;

};

long wxPaintDC::GetCharWidth(void)
{
  if (!Ok()) return 0;

};

long wxPaintDC::GetCharHeight(void)
{
  if (!Ok()) return 0;

};

void wxPaintDC::Clear(void)
{
  if (!Ok()) return;

};

void wxPaintDC::SetFont( const wxFont &font )
{
  if (!Ok()) return;

  m_font = font;
};

void wxPaintDC::SetPen( const wxPen &pen )
{
  if (!Ok()) return;

  if (m_pen == pen) return;

  m_pen = pen;

  if (!m_pen.Ok()) return;
};

void wxPaintDC::SetBrush( const wxBrush &brush )
{
  if (!Ok()) return;

  if (m_brush == brush) return;

  m_brush = brush;

  if (!m_brush.Ok()) return;

};

void wxPaintDC::SetBackground( const wxBrush &brush )
{
  if (!Ok()) return;

  if (m_backgroundBrush == brush) return;

  m_backgroundBrush = brush;

  if (!m_backgroundBrush.Ok()) return;

};

void wxPaintDC::SetLogicalFunction( int function )
{
  if (m_logicalFunction == function) return;
};

void wxPaintDC::SetTextForeground( const wxColour &col )
{
  if (!Ok()) return;

  if (m_textForegroundColour == col) return;

  m_textForegroundColour = col;
  if (!m_textForegroundColour.Ok()) return;
};

void wxPaintDC::SetTextBackground( const wxColour &col )
{
  if (!Ok()) return;

  if (m_textBackgroundColour == col) return;

  m_textBackgroundColour = col;
  if (!m_textBackgroundColour.Ok()) return;
};

void wxPaintDC::SetBackgroundMode( int mode )
{
  m_backgroundMode = mode;

  if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
  {
  }
};

void wxPaintDC::SetPalette( const wxPalette& WXUNUSED(palette) )
{
};

void wxPaintDC::SetClippingRegion( long x, long y, long width, long height )
{
  wxDC::SetClippingRegion( x, y, width, height );

};

void wxPaintDC::DestroyClippingRegion(void)
{
  wxDC::DestroyClippingRegion();

};

// ----------------------------------- spline code ----------------------------------------

void wx_quadratic_spline(double a1, double b1, double a2, double b2,
                         double a3, double b3, double a4, double b4);
void wx_clear_stack(void);
int wx_spline_pop(double *x1, double *y1, double *x2, double *y2, double *x3,
        double *y3, double *x4, double *y4);
void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
          double x4, double y4);
static bool wx_spline_add_point(double x, double y);
static void wx_spline_draw_point_array(wxDC *dc);

wxList wx_spline_point_list;

#define		half(z1, z2)	((z1+z2)/2.0)
#define		THRESHOLD	5

/* iterative version */

void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
                 double b4)
{
    register double  xmid, ymid;
    double           x1, y1, x2, y2, x3, y3, x4, y4;

    wx_clear_stack();
    wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);

    while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
        xmid = (double)half(x2, x3);
        ymid = (double)half(y2, y3);
	if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
	    fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
            wx_spline_add_point( x1, y1 );
            wx_spline_add_point( xmid, ymid );
	} else {
            wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
                 (double)half(x3, x4), (double)half(y3, y4), x4, y4);
            wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
                 (double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
	}
    }
}

/* utilities used by spline drawing routines */

typedef struct wx_spline_stack_struct {
    double           x1, y1, x2, y2, x3, y3, x4, y4;
} Stack;

#define         SPLINE_STACK_DEPTH             20
static Stack    wx_spline_stack[SPLINE_STACK_DEPTH];
static Stack   *wx_stack_top;
static int      wx_stack_count;

void wx_clear_stack(void)
{
    wx_stack_top = wx_spline_stack;
    wx_stack_count = 0;
}

void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
{
    wx_stack_top->x1 = x1;
    wx_stack_top->y1 = y1;
    wx_stack_top->x2 = x2;
    wx_stack_top->y2 = y2;
    wx_stack_top->x3 = x3;
    wx_stack_top->y3 = y3;
    wx_stack_top->x4 = x4;
    wx_stack_top->y4 = y4;
    wx_stack_top++;
    wx_stack_count++;
}

int wx_spline_pop(double *x1, double *y1, double *x2, double *y2,
                  double *x3, double *y3, double *x4, double *y4)
{
    if (wx_stack_count == 0)
	return (0);
    wx_stack_top--;
    wx_stack_count--;
    *x1 = wx_stack_top->x1;
    *y1 = wx_stack_top->y1;
    *x2 = wx_stack_top->x2;
    *y2 = wx_stack_top->y2;
    *x3 = wx_stack_top->x3;
    *y3 = wx_stack_top->y3;
    *x4 = wx_stack_top->x4;
    *y4 = wx_stack_top->y4;
    return (1);
}

static bool wx_spline_add_point(double x, double y)
{
  wxPoint *point = new wxPoint ;
  point->x = (int) x;
  point->y = (int) y;
  wx_spline_point_list.Append((wxObject*)point);
  return TRUE;
}

static void wx_spline_draw_point_array(wxDC *dc)
{
  dc->DrawLines(&wx_spline_point_list, 0, 0 );
  wxNode *node = wx_spline_point_list.First();
  while (node)
  {
    wxPoint *point = (wxPoint *)node->Data();
    delete point;
    delete node;
    node = wx_spline_point_list.First();
  }
}

void wxPaintDC::DrawOpenSpline( wxList *points )
{
    wxPoint *p;
    double           cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
    double           x1, y1, x2, y2;

    wxNode *node = points->First();
    p = (wxPoint *)node->Data();

    x1 = p->x;
    y1 = p->y;

    node = node->Next();
    p = (wxPoint *)node->Data();

    x2 = p->x;
    y2 = p->y;
    cx1 = (double)((x1 + x2) / 2);
    cy1 = (double)((y1 + y2) / 2);
    cx2 = (double)((cx1 + x2) / 2);
    cy2 = (double)((cy1 + y2) / 2);

    wx_spline_add_point(x1, y1);

    while ((node = node->Next()) != NULL)
    {
        p = (wxPoint *)node->Data();
	x1 = x2;
	y1 = y2;
	x2 = p->x;
	y2 = p->y;
        cx4 = (double)(x1 + x2) / 2;
        cy4 = (double)(y1 + y2) / 2;
        cx3 = (double)(x1 + cx4) / 2;
        cy3 = (double)(y1 + cy4) / 2;

        wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);

	cx1 = cx4;
	cy1 = cy4;
        cx2 = (double)(cx1 + x2) / 2;
        cy2 = (double)(cy1 + y2) / 2;
    }

    wx_spline_add_point( cx1, cy1 );
    wx_spline_add_point( x2, y2 );

    wx_spline_draw_point_array( this );
};
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: dcclient.cpp
	3	// Purpose: wxClientDC 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 "dcclient.h"
	14	#endif
	15
	16	#include "wx/dcclient.h"
	17	#include "wx/dcmemory.h"
	18	#include <math.h>
	19
	20	//-----------------------------------------------------------------------------
	21	// constants
	22	//-----------------------------------------------------------------------------
	23
	24	#define RAD2DEG 57.2957795131
	25
	26	//-----------------------------------------------------------------------------
	27	// wxPaintDC
	28	//-----------------------------------------------------------------------------
	29
	30	//IMPLEMENT_DYNAMIC_CLASS(wxClientDC, wxDC)
	31	//IMPLEMENT_DYNAMIC_CLASS(wxWindowDC, wxDC)
	32	IMPLEMENT_DYNAMIC_CLASS(wxPaintDC, wxDC)
	33
	34
	35	wxPaintDC::wxPaintDC(void)
	36	{
	37	};
	38
	39	wxPaintDC::wxPaintDC( wxWindow *window )
	40	{
	41	};
	42
	43	wxPaintDC::~wxPaintDC(void)
	44	{
	45	};
	46
	47	void wxPaintDC::FloodFill( long WXUNUSED(x1), long WXUNUSED(y1),
	48	wxColour *WXUNUSED(col), int WXUNUSED(style) )
	49	{
	50	};
	51
	52	bool wxPaintDC::GetPixel( long WXUNUSED(x1), long WXUNUSED(y1), wxColour *WXUNUSED(col) ) const
	53	{
	54	return FALSE;
	55	};
	56
	57	void wxPaintDC::DrawLine( long x1, long y1, long x2, long y2 )
	58	{
	59	if (!Ok()) return;
	60
	61	};
	62
	63	void wxPaintDC::CrossHair( long x, long y )
	64	{
	65	if (!Ok()) return;
	66
	67	};
	68
	69	void wxPaintDC::DrawArc( long x1, long y1, long x2, long y2, double xc, double yc )
	70	{
	71	if (!Ok()) return;
	72
	73	long xx1 = XLOG2DEV(x1);
	74	long yy1 = YLOG2DEV(y1);
	75	long xx2 = XLOG2DEV(x2);
	76	long yy2 = YLOG2DEV(y2);
	77	long xxc = XLOG2DEV((long)xc);
	78	long yyc = YLOG2DEV((long)yc);
	79	double dx = xx1 - xxc;
	80	double dy = yy1 - yyc;
	81	double radius = sqrt(dxdx+dydy);
	82	long r = (long)radius;
	83	double radius1, radius2;
	84
	85	if (xx1 == xx2 && yy1 == yy2)
	86	{
	87	radius1 = 0.0;
	88	radius2 = 360.0;
	89	}
	90	else
	91	if (radius == 0.0)
	92	{
	93	radius1 = radius2 = 0.0;
	94	}
	95	else
	96	{
	97	radius1 = (xx1 - xxc == 0) ?
	98	(yy1 - yyc < 0) ? 90.0 : -90.0 :
	99	-atan2(double(yy1-yyc), double(xx1-xxc)) * RAD2DEG;
	100	radius2 = (xx2 - xxc == 0) ?
	101	(yy2 - yyc < 0) ? 90.0 : -90.0 :
	102	-atan2(double(yy2-yyc), double(xx2-xxc)) * RAD2DEG;
	103	};
	104	long alpha1 = long(radius1 * 64.0);
	105	long alpha2 = long((radius2 - radius1) * 64.0);
	106	while (alpha2 <= 0) alpha2 += 360*64;
	107	while (alpha1 > 36064) alpha1 -= 36064;
	108
	109	if (m_brush.GetStyle() != wxTRANSPARENT) {};
	110
	111	if (m_pen.GetStyle() != wxTRANSPARENT) {};
	112
	113	};
	114
	115	void wxPaintDC::DrawEllipticArc( long x, long y, long width, long height, double sa, double ea )
	116	{
	117	if (!Ok()) return;
	118
	119	long xx = XLOG2DEV(x);
	120	long yy = YLOG2DEV(y);
	121	long ww = m_signX * XLOG2DEVREL(width);
	122	long hh = m_signY * YLOG2DEVREL(height);
	123
	124	// CMB: handle -ve width and/or height
	125	if (ww < 0) { ww = -ww; xx = xx - ww; }
	126	if (hh < 0) { hh = -hh; yy = yy - hh; }
	127
	128	long start = long(sa * 64.0);
	129	long end = long(ea * 64.0);
	130	if (m_brush.GetStyle() != wxTRANSPARENT) {};
	131
	132	if (m_pen.GetStyle() != wxTRANSPARENT) {};
	133	};
	134
	135	void wxPaintDC::DrawPoint( long x, long y )
	136	{
	137	if (!Ok()) return;
	138
	139	if (m_pen.GetStyle() != wxTRANSPARENT) {};
	140	};
	141
	142	void wxPaintDC::DrawLines( int n, wxPoint points[], long xoffset, long yoffset )
	143	{
	144	if (!Ok()) return;
	145
	146	if (m_pen.GetStyle() == wxTRANSPARENT) return;
	147
	148	for (int i = 0; i < n-1; i++)
	149	{
	150	long x1 = XLOG2DEV(points[i].x + xoffset);
	151	long x2 = XLOG2DEV(points[i+1].x + xoffset);
	152	long y1 = YLOG2DEV(points[i].y + yoffset); // oh, what a waste
	153	long y2 = YLOG2DEV(points[i+1].y + yoffset);
	154	};
	155	};
	156
	157	void wxPaintDC::DrawLines( wxList *points, long xoffset, long yoffset )
	158	{
	159	if (!Ok()) return;
	160
	161	if (m_pen.GetStyle() == wxTRANSPARENT) return;
	162
	163	wxNode *node = points->First();
	164	while (node->Next())
	165	{
	166	wxPoint point = (wxPoint)node->Data();
	167	wxPoint npoint = (wxPoint)node->Next()->Data();
	168	long x1 = XLOG2DEV(point->x + xoffset);
	169	long x2 = XLOG2DEV(npoint->x + xoffset);
	170	long y1 = YLOG2DEV(point->y + yoffset); // and again...
	171	long y2 = YLOG2DEV(npoint->y + yoffset);
	172	node = node->Next();
	173	};
	174	};
	175
	176	void wxPaintDC::DrawPolygon( int WXUNUSED(n), wxPoint WXUNUSED(points)[],
	177	long WXUNUSED(xoffset), long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
	178	{
	179	if (!Ok()) return;
	180	};
	181
	182	void wxPaintDC::DrawPolygon( wxList *WXUNUSED(lines), long WXUNUSED(xoffset),
	183	long WXUNUSED(yoffset), int WXUNUSED(fillStyle) )
	184	{
	185	if (!Ok()) return;
	186	};
	187
	188	void wxPaintDC::DrawRectangle( long x, long y, long width, long height )
	189	{
	190	if (!Ok()) return;
	191
	192	long xx = XLOG2DEV(x);
	193	long yy = YLOG2DEV(y);
	194	long ww = m_signX * XLOG2DEVREL(width);
	195	long hh = m_signY * YLOG2DEVREL(height);
	196
	197	// CMB: draw nothing if transformed w or h is 0
	198	if (ww == 0 \|\| hh == 0) return;
	199
	200	// CMB: handle -ve width and/or height
	201	if (ww < 0) { ww = -ww; xx = xx - ww; }
	202	if (hh < 0) { hh = -hh; yy = yy - hh; }
	203
	204	if (m_brush.GetStyle() != wxTRANSPARENT) {};
	205
	206	if (m_pen.GetStyle() != wxTRANSPARENT) {};
	207	};
	208
	209	void wxPaintDC::DrawRoundedRectangle( long x, long y, long width, long height, double radius )
	210	{
	211	if (!Ok()) return;
	212
	213	if (radius < 0.0) radius = - radius * ((width < height) ? width : height);
	214
	215	long xx = XLOG2DEV(x);
	216	long yy = YLOG2DEV(y);
	217	long ww = m_signX * XLOG2DEVREL(width);
	218	long hh = m_signY * YLOG2DEVREL(height);
	219	long rr = XLOG2DEVREL((long)radius);
	220
	221	// CMB: handle -ve width and/or height
	222	if (ww < 0) { ww = -ww; xx = xx - ww; }
	223	if (hh < 0) { hh = -hh; yy = yy - hh; }
	224
	225	// CMB: if radius is zero use DrawRectangle() instead to avoid
	226	// X drawing errors with small radii
	227	if (rr == 0)
	228	{
	229	DrawRectangle( x, y, width, height );
	230	return;
	231	}
	232
	233	// CMB: draw nothing if transformed w or h is 0
	234	if (ww == 0 \|\| hh == 0) return;
	235
	236	// CMB: adjust size if outline is drawn otherwise the result is
	237	// 1 pixel too wide and high
	238	if (m_pen.GetStyle() != wxTRANSPARENT)
	239	{
	240	ww--;
	241	hh--;
	242	}
	243
	244	// CMB: ensure dd is not larger than rectangle otherwise we
	245	// get an hour glass shape
	246	long dd = 2 * rr;
	247	if (dd > ww) dd = ww;
	248	if (dd > hh) dd = hh;
	249	rr = dd / 2;
	250
	251	if (m_brush.GetStyle() != wxTRANSPARENT)
	252	{
	253	};
	254
	255	if (m_pen.GetStyle() != wxTRANSPARENT)
	256	{
	257	};
	258	};
	259
	260	void wxPaintDC::DrawEllipse( long x, long y, long width, long height )
	261	{
	262	if (!Ok()) return;
	263
	264	long xx = XLOG2DEV(x);
	265	long yy = YLOG2DEV(y);
	266	long ww = m_signX * XLOG2DEVREL(width);
	267	long hh = m_signY * YLOG2DEVREL(height);
	268
	269	// CMB: handle -ve width and/or height
	270	if (ww < 0) { ww = -ww; xx = xx - ww; }
	271	if (hh < 0) { hh = -hh; yy = yy - hh; }
	272
	273	if (m_brush.GetStyle() != wxTRANSPARENT) {};
	274
	275	if (m_pen.GetStyle() != wxTRANSPARENT) {};
	276	};
	277
	278	bool wxPaintDC::CanDrawBitmap(void) const
	279	{
	280	return TRUE;
	281	};
	282
	283	void wxPaintDC::DrawIcon( const wxIcon &icon, long x, long y, bool useMask )
	284	{
	285	if (!Ok()) return;
	286
	287	if (!icon.Ok()) return;
	288
	289	int xx = XLOG2DEV(x);
	290	int yy = YLOG2DEV(y);
	291
	292	};
	293
	294	bool wxPaintDC::Blit( long xdest, long ydest, long width, long height,
	295	wxDC *source, long xsrc, long ysrc, int WXUNUSED(logical_func), bool WXUNUSED(useMask) )
	296	{
	297	if (!Ok()) return FALSE;
	298
	299	// CMB 20/5/98: add blitting of bitmaps
	300	if (source->IsKindOf(CLASSINFO(wxMemoryDC)))
	301	{
	302	wxMemoryDC* srcDC = (wxMemoryDC*)source;
	303	/*
	304	GdkBitmap* bmap = srcDC->m_selected.GetBitmap();
	305	if (bmap)
	306	{
	307	gdk_draw_bitmap (
	308	m_window,
	309	m_textGC,
	310	bmap,
	311	source->DeviceToLogicalX(xsrc), source->DeviceToLogicalY(ysrc),
	312	XLOG2DEV(xdest), YLOG2DEV(ydest),
	313	source->DeviceToLogicalXRel(width), source->DeviceToLogicalYRel(height)
	314	);
	315	return TRUE;
	316	}
	317	*/
	318	}
	319
	320	return TRUE;
	321	};
	322
	323	void wxPaintDC::DrawText( const wxString &text, long x, long y, bool
	324	WXUNUSED(use16) )
	325	{
	326	if (!Ok()) return;
	327
	328	};
	329
	330
	331
	332	bool wxPaintDC::CanGetTextExtent(void) const
	333	{
	334	return TRUE;
	335	};
	336
	337	void wxPaintDC::GetTextExtent( const wxString &string, long width, long height,
	338	long WXUNUSED(descent), long WXUNUSED(externalLeading),
	339	wxFont *WXUNUSED(theFont), bool WXUNUSED(use16) )
	340	{
	341	if (!Ok()) return;
	342
	343	};
	344
	345	long wxPaintDC::GetCharWidth(void)
	346	{
	347	if (!Ok()) return 0;
	348
	349	};
	350
	351	long wxPaintDC::GetCharHeight(void)
	352	{
	353	if (!Ok()) return 0;
	354
	355	};
	356
	357	void wxPaintDC::Clear(void)
	358	{
	359	if (!Ok()) return;
	360
	361	};
	362
	363	void wxPaintDC::SetFont( const wxFont &font )
	364	{
	365	if (!Ok()) return;
	366
	367	m_font = font;
	368	};
	369
	370	void wxPaintDC::SetPen( const wxPen &pen )
	371	{
	372	if (!Ok()) return;
	373
	374	if (m_pen == pen) return;
	375
	376	m_pen = pen;
	377
	378	if (!m_pen.Ok()) return;
	379	};
	380
	381	void wxPaintDC::SetBrush( const wxBrush &brush )
	382	{
	383	if (!Ok()) return;
	384
	385	if (m_brush == brush) return;
	386
	387	m_brush = brush;
	388
	389	if (!m_brush.Ok()) return;
	390
	391	};
	392
	393	void wxPaintDC::SetBackground( const wxBrush &brush )
	394	{
	395	if (!Ok()) return;
	396
	397	if (m_backgroundBrush == brush) return;
	398
	399	m_backgroundBrush = brush;
	400
	401	if (!m_backgroundBrush.Ok()) return;
	402
	403	};
	404
	405	void wxPaintDC::SetLogicalFunction( int function )
	406	{
	407	if (m_logicalFunction == function) return;
	408	};
	409
	410	void wxPaintDC::SetTextForeground( const wxColour &col )
	411	{
	412	if (!Ok()) return;
	413
	414	if (m_textForegroundColour == col) return;
	415
	416	m_textForegroundColour = col;
	417	if (!m_textForegroundColour.Ok()) return;
	418	};
	419
	420	void wxPaintDC::SetTextBackground( const wxColour &col )
	421	{
	422	if (!Ok()) return;
	423
	424	if (m_textBackgroundColour == col) return;
	425
	426	m_textBackgroundColour = col;
	427	if (!m_textBackgroundColour.Ok()) return;
	428	};
	429
	430	void wxPaintDC::SetBackgroundMode( int mode )
	431	{
	432	m_backgroundMode = mode;
	433
	434	if (m_brush.GetStyle() != wxSOLID && m_brush.GetStyle() != wxTRANSPARENT)
	435	{
	436	}
	437	};
	438
	439	void wxPaintDC::SetPalette( const wxPalette& WXUNUSED(palette) )
	440	{
	441	};
	442
	443	void wxPaintDC::SetClippingRegion( long x, long y, long width, long height )
	444	{
	445	wxDC::SetClippingRegion( x, y, width, height );
	446
	447	};
	448
	449	void wxPaintDC::DestroyClippingRegion(void)
	450	{
	451	wxDC::DestroyClippingRegion();
	452
	453	};
	454
	455	// ----------------------------------- spline code ----------------------------------------
	456
	457	void wx_quadratic_spline(double a1, double b1, double a2, double b2,
	458	double a3, double b3, double a4, double b4);
	459	void wx_clear_stack(void);
	460	int wx_spline_pop(double x1, double y1, double x2, double y2, double *x3,
	461	double y3, double x4, double *y4);
	462	void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3,
	463	double x4, double y4);
	464	static bool wx_spline_add_point(double x, double y);
	465	static void wx_spline_draw_point_array(wxDC *dc);
	466
	467	wxList wx_spline_point_list;
	468
	469	#define half(z1, z2) ((z1+z2)/2.0)
	470	#define THRESHOLD 5
	471
	472	/* iterative version */
	473
	474	void wx_quadratic_spline(double a1, double b1, double a2, double b2, double a3, double b3, double a4,
	475	double b4)
	476	{
	477	register double xmid, ymid;
	478	double x1, y1, x2, y2, x3, y3, x4, y4;
	479
	480	wx_clear_stack();
	481	wx_spline_push(a1, b1, a2, b2, a3, b3, a4, b4);
	482
	483	while (wx_spline_pop(&x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4)) {
	484	xmid = (double)half(x2, x3);
	485	ymid = (double)half(y2, y3);
	486	if (fabs(x1 - xmid) < THRESHOLD && fabs(y1 - ymid) < THRESHOLD &&
	487	fabs(xmid - x4) < THRESHOLD && fabs(ymid - y4) < THRESHOLD) {
	488	wx_spline_add_point( x1, y1 );
	489	wx_spline_add_point( xmid, ymid );
	490	} else {
	491	wx_spline_push(xmid, ymid, (double)half(xmid, x3), (double)half(ymid, y3),
	492	(double)half(x3, x4), (double)half(y3, y4), x4, y4);
	493	wx_spline_push(x1, y1, (double)half(x1, x2), (double)half(y1, y2),
	494	(double)half(x2, xmid), (double)half(y2, ymid), xmid, ymid);
	495	}
	496	}
	497	}
	498
	499	/* utilities used by spline drawing routines */
	500
	501	typedef struct wx_spline_stack_struct {
	502	double x1, y1, x2, y2, x3, y3, x4, y4;
	503	} Stack;
	504
	505	#define SPLINE_STACK_DEPTH 20
	506	static Stack wx_spline_stack[SPLINE_STACK_DEPTH];
	507	static Stack *wx_stack_top;
	508	static int wx_stack_count;
	509
	510	void wx_clear_stack(void)
	511	{
	512	wx_stack_top = wx_spline_stack;
	513	wx_stack_count = 0;
	514	}
	515
	516	void wx_spline_push(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
	517	{
	518	wx_stack_top->x1 = x1;
	519	wx_stack_top->y1 = y1;
	520	wx_stack_top->x2 = x2;
	521	wx_stack_top->y2 = y2;
	522	wx_stack_top->x3 = x3;
	523	wx_stack_top->y3 = y3;
	524	wx_stack_top->x4 = x4;
	525	wx_stack_top->y4 = y4;
	526	wx_stack_top++;
	527	wx_stack_count++;
	528	}
	529
	530	int wx_spline_pop(double x1, double y1, double x2, double y2,
	531	double x3, double y3, double x4, double y4)
	532	{
	533	if (wx_stack_count == 0)
	534	return (0);
	535	wx_stack_top--;
	536	wx_stack_count--;
	537	*x1 = wx_stack_top->x1;
	538	*y1 = wx_stack_top->y1;
	539	*x2 = wx_stack_top->x2;
	540	*y2 = wx_stack_top->y2;
	541	*x3 = wx_stack_top->x3;
	542	*y3 = wx_stack_top->y3;
	543	*x4 = wx_stack_top->x4;
	544	*y4 = wx_stack_top->y4;
	545	return (1);
	546	}
	547
	548	static bool wx_spline_add_point(double x, double y)
	549	{
	550	wxPoint *point = new wxPoint ;
	551	point->x = (int) x;
	552	point->y = (int) y;
	553	wx_spline_point_list.Append((wxObject*)point);
	554	return TRUE;
	555	}
	556
	557	static void wx_spline_draw_point_array(wxDC *dc)
	558	{
	559	dc->DrawLines(&wx_spline_point_list, 0, 0 );
	560	wxNode *node = wx_spline_point_list.First();
	561	while (node)
	562	{
	563	wxPoint point = (wxPoint )node->Data();
	564	delete point;
	565	delete node;
	566	node = wx_spline_point_list.First();
	567	}
	568	}
	569
	570	void wxPaintDC::DrawOpenSpline( wxList *points )
	571	{
	572	wxPoint *p;
	573	double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
	574	double x1, y1, x2, y2;
	575
	576	wxNode *node = points->First();
	577	p = (wxPoint *)node->Data();
	578
	579	x1 = p->x;
	580	y1 = p->y;
	581
	582	node = node->Next();
	583	p = (wxPoint *)node->Data();
	584
	585	x2 = p->x;
	586	y2 = p->y;
	587	cx1 = (double)((x1 + x2) / 2);
	588	cy1 = (double)((y1 + y2) / 2);
	589	cx2 = (double)((cx1 + x2) / 2);
	590	cy2 = (double)((cy1 + y2) / 2);
	591
	592	wx_spline_add_point(x1, y1);
	593
	594	while ((node = node->Next()) != NULL)
	595	{
	596	p = (wxPoint *)node->Data();
	597	x1 = x2;
	598	y1 = y2;
	599	x2 = p->x;
	600	y2 = p->y;
	601	cx4 = (double)(x1 + x2) / 2;
	602	cy4 = (double)(y1 + y2) / 2;
	603	cx3 = (double)(x1 + cx4) / 2;
	604	cy3 = (double)(y1 + cy4) / 2;
	605
	606	wx_quadratic_spline(cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4);
	607
	608	cx1 = cx4;
	609	cy1 = cy4;
	610	cx2 = (double)(cx1 + x2) / 2;
	611	cy2 = (double)(cy1 + y2) / 2;
	612	}
	613
	614	wx_spline_add_point( cx1, cy1 );
	615	wx_spline_add_point( x2, y2 );
	616
	617	wx_spline_draw_point_array( this );
	618	};