-
-void
-wxDCBase::DoDrawPolyPolygon(int n,
- int count[],
- wxPoint points[],
- wxCoord xoffset, wxCoord yoffset,
- int fillStyle)
-{
- if ( n == 1 )
- {
- DoDrawPolygon(count[0], points, xoffset, yoffset, fillStyle);
- return;
- }
-
- int i, j, lastOfs;
- wxPoint* pts;
- wxPen pen;
-
- for (i = j = lastOfs = 0; i < n; i++)
- {
- lastOfs = j;
- j += count[i];
- }
- pts = new wxPoint[j+n-1];
- for (i = 0; i < j; i++)
- pts[i] = points[i];
- for (i = 2; i <= n; i++)
- {
- lastOfs -= count[n-i];
- pts[j++] = pts[lastOfs];
- }
-
- pen = GetPen();
- SetPen(wxPen(*wxBLACK, 0, wxTRANSPARENT));
- DoDrawPolygon(j, pts, xoffset, yoffset, fillStyle);
- SetPen(pen);
- for (i = j = 0; i < n; i++)
- {
- DoDrawLines(count[i], pts+j, xoffset, yoffset);
- j += count[i];
- }
- delete[] pts;
-}
-
-// ----------------------------------------------------------------------------
-// splines
-// ----------------------------------------------------------------------------
-
-#if wxUSE_SPLINES
-
-void wxDCBase::DrawSpline(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2, wxCoord x3, wxCoord y3)
-{
- wxPointList point_list;
-
- wxPoint *point1 = new wxPoint;
- point1->x = x1; point1->y = y1;
- point_list.Append( point1 );
-
- wxPoint *point2 = new wxPoint;
- point2->x = x2; point2->y = y2;
- point_list.Append( point2 );
-
- wxPoint *point3 = new wxPoint;
- point3->x = x3; point3->y = y3;
- point_list.Append( point3 );
-
- DrawSpline(&point_list);
-
- for( wxPointList::compatibility_iterator node = point_list.GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- delete p;
- }
-}
-
-void wxDCBase::DrawSpline(int n, wxPoint points[])
-{
- wxPointList list;
- for (int i =0; i < n; i++)
- list.Append( &points[i] );
-
- DrawSpline(&list);
-}
-
-// ----------------------------------- 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();
-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(wxDCBase *dc);
-
-wxPointList 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()
-{
- 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( wxRound(x), wxRound(y) );
- wx_spline_point_list.Append( point );
- return true;
-}
-
-static void wx_spline_draw_point_array(wxDCBase *dc)
-{
- dc->DrawLines(&wx_spline_point_list, 0, 0 );
- wxPointList::compatibility_iterator node = wx_spline_point_list.GetFirst();
- while (node)
- {
- wxPoint *point = node->GetData();
- delete point;
- wx_spline_point_list.Erase(node);
- node = wx_spline_point_list.GetFirst();
- }
-}
-
-#if WXWIN_COMPATIBILITY_2_8
-void wxDCBase::DrawSpline(const wxList *points)
-{
- wxPointList list;
- wxObjectList::compatibility_iterator node = points->GetFirst();
- while (node)
- {
- list.Append( (wxPoint*) node->GetData() );
- node = node->GetNext();
- }
- DoDrawSpline( &list );
-}
-#endif // WXWIN_COMPATIBILITY_2_8
-
-void wxDCBase::DoDrawSpline( const wxPointList *points )
-{
- wxCHECK_RET( Ok(), wxT("invalid window dc") );
-
- wxPoint *p;
- double cx1, cy1, cx2, cy2, cx3, cy3, cx4, cy4;
- double x1, y1, x2, y2;
-
- wxPointList::compatibility_iterator node = points->GetFirst();
- if (!node)
- // empty list
- return;
-
- p = node->GetData();
-
- x1 = p->x;
- y1 = p->y;
-
- node = node->GetNext();
- p = node->GetData();
-
- 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->GetNext())
-#if !wxUSE_STL
- != NULL
-#endif // !wxUSE_STL
- )
- {
- p = node->GetData();
- 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 );
-}
-
-#endif // wxUSE_SPLINES
-
-// ----------------------------------------------------------------------------
-// Partial Text Extents
-// ----------------------------------------------------------------------------
-
-
-// Each element of the widths array will be the width of the string up to and
-// including the corresponding character in text. This is the generic
-// implementation, the port-specific classes should do this with native APIs
-// if available and if faster. Note: pango_layout_index_to_pos is much slower
-// than calling GetTextExtent!!
-
-#define FWC_SIZE 256
-
-class FontWidthCache
-{
-public:
- FontWidthCache() : m_scaleX(1), m_widths(NULL) { }
- ~FontWidthCache() { delete []m_widths; }
-
- void Reset()
- {
- if (!m_widths)
- m_widths = new int[FWC_SIZE];
-
- memset(m_widths, 0, sizeof(int)*FWC_SIZE);
- }
-
- wxFont m_font;
- double m_scaleX;
- int *m_widths;
-};
-
-static FontWidthCache s_fontWidthCache;
-
-bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const
-{
- int totalWidth = 0;
-
- const size_t len = text.length();
- widths.Empty();
- widths.Add(0, len);
-
- // reset the cache if font or horizontal scale have changed
- if ( !s_fontWidthCache.m_widths ||
- !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
- (s_fontWidthCache.m_font != GetFont()) )
- {
- s_fontWidthCache.Reset();
- s_fontWidthCache.m_font = GetFont();
- s_fontWidthCache.m_scaleX = m_scaleX;
- }
-
- // Calculate the position of each character based on the widths of
- // the previous characters
- int w, h;
- for ( size_t i = 0; i < len; i++ )
- {
- const wxChar c = text[i];
- unsigned int c_int = (unsigned int)c;
-
- if ((c_int < FWC_SIZE) && (s_fontWidthCache.m_widths[c_int] != 0))
- {
- w = s_fontWidthCache.m_widths[c_int];
- }
- else
- {
- GetTextExtent(c, &w, &h);
- if (c_int < FWC_SIZE)
- s_fontWidthCache.m_widths[c_int] = w;
- }
-
- totalWidth += w;
- widths[i] = totalWidth;
- }
-
- return true;
-}
-
-
-// ----------------------------------------------------------------------------
-// enhanced text drawing
-// ----------------------------------------------------------------------------
-
-void wxDCBase::GetMultiLineTextExtent(const wxString& text,
- wxCoord *x,
- wxCoord *y,
- wxCoord *h,
- const wxFont *font) const
-{
- wxCoord widthTextMax = 0, widthLine,
- heightTextTotal = 0, heightLineDefault = 0, heightLine = 0;
-
- wxString curLine;
- for ( wxString::const_iterator pc = text.begin(); ; ++pc )
- {
- if ( pc == text.end() || *pc == _T('\n') )
- {
- if ( curLine.empty() )
- {
- // we can't use GetTextExtent - it will return 0 for both width
- // and height and an empty line should count in height
- // calculation
-
- // assume that this line has the same height as the previous
- // one
- if ( !heightLineDefault )
- heightLineDefault = heightLine;
-
- if ( !heightLineDefault )
- {
- // but we don't know it yet - choose something reasonable
- GetTextExtent(_T("W"), NULL, &heightLineDefault,
- NULL, NULL, font);
- }
-
- heightTextTotal += heightLineDefault;
- }
- else
- {
- GetTextExtent(curLine, &widthLine, &heightLine,
- NULL, NULL, font);
- if ( widthLine > widthTextMax )
- widthTextMax = widthLine;
- heightTextTotal += heightLine;
- }
-
- if ( pc == text.end() )
- {
- break;
- }
- else // '\n'
- {
- curLine.clear();
- }
- }
- else
- {
- curLine += *pc;
- }
- }
-
- if ( x )
- *x = widthTextMax;
- if ( y )
- *y = heightTextTotal;
- if ( h )
- *h = heightLine;
-}
-
-void wxDCBase::DrawLabel(const wxString& text,
- const wxBitmap& bitmap,
- const wxRect& rect,
- int alignment,
- int indexAccel,
- wxRect *rectBounding)
-{
- // find the text position
- wxCoord widthText, heightText, heightLine;
- GetMultiLineTextExtent(text, &widthText, &heightText, &heightLine);
-
- wxCoord width, height;
- if ( bitmap.Ok() )
- {
- width = widthText + bitmap.GetWidth();
- height = bitmap.GetHeight();
- }
- else // no bitmap
- {
- width = widthText;
- height = heightText;
- }
-
- wxCoord x, y;
- if ( alignment & wxALIGN_RIGHT )
- {
- x = rect.GetRight() - width;
- }
- else if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
- {
- x = (rect.GetLeft() + rect.GetRight() + 1 - width) / 2;
- }
- else // alignment & wxALIGN_LEFT
- {
- x = rect.GetLeft();
- }
-
- if ( alignment & wxALIGN_BOTTOM )
- {
- y = rect.GetBottom() - height;
- }
- else if ( alignment & wxALIGN_CENTRE_VERTICAL )
- {
- y = (rect.GetTop() + rect.GetBottom() + 1 - height) / 2;
- }
- else // alignment & wxALIGN_TOP
- {
- y = rect.GetTop();
- }
-
- // draw the bitmap first
- wxCoord x0 = x,
- y0 = y,
- width0 = width;
- if ( bitmap.Ok() )
- {
- DrawBitmap(bitmap, x, y, true /* use mask */);
-
- wxCoord offset = bitmap.GetWidth() + 4;
- x += offset;
- width -= offset;
-
- y += (height - heightText) / 2;
- }
-
- // we will draw the underscore under the accel char later
- wxCoord startUnderscore = 0,
- endUnderscore = 0,
- yUnderscore = 0;
-
- // split the string into lines and draw each of them separately
- wxString curLine;
- for ( wxString::const_iterator pc = text.begin(); ; ++pc )
- {
- if ( pc == text.end() || *pc == _T('\n') )
- {
- int xRealStart = x; // init it here to avoid compielr warnings
-
- if ( !curLine.empty() )
- {
- // NB: can't test for !(alignment & wxALIGN_LEFT) because
- // wxALIGN_LEFT is 0
- if ( alignment & (wxALIGN_RIGHT | wxALIGN_CENTRE_HORIZONTAL) )
- {
- wxCoord widthLine;
- GetTextExtent(curLine, &widthLine, NULL);
-
- if ( alignment & wxALIGN_RIGHT )
- {
- xRealStart += width - widthLine;
- }
- else // if ( alignment & wxALIGN_CENTRE_HORIZONTAL )
- {
- xRealStart += (width - widthLine) / 2;
- }
- }
- //else: left aligned, nothing to do
-
- DrawText(curLine, xRealStart, y);
- }
-
- y += heightLine;
-
- // do we have underscore in this line? we can check yUnderscore
- // because it is set below to just y + heightLine if we do
- if ( y == yUnderscore )
- {
- // adjust the horz positions to account for the shift
- startUnderscore += xRealStart;
- endUnderscore += xRealStart;
- }
-
- if ( pc == text.end() )
- break;
-
- curLine.clear();
- }
- else // not end of line
- {
- if ( pc - text.begin() == indexAccel )
- {
- // remeber to draw underscore here
- GetTextExtent(curLine, &startUnderscore, NULL);
- curLine += *pc;
- GetTextExtent(curLine, &endUnderscore, NULL);
-
- yUnderscore = y + heightLine;
- }
- else
- {
- curLine += *pc;
- }
- }
- }
-
- // draw the underscore if found
- if ( startUnderscore != endUnderscore )
- {
- // it should be of the same colour as text
- SetPen(wxPen(GetTextForeground(), 0, wxSOLID));
-
- yUnderscore--;
-
- DrawLine(startUnderscore, yUnderscore, endUnderscore, yUnderscore);
- }
-
- // return bounding rect if requested
- if ( rectBounding )
- {
- *rectBounding = wxRect(x, y - heightText, widthText, heightText);
- }
-
- CalcBoundingBox(x0, y0);
- CalcBoundingBox(x0 + width0, y0 + height);
-}
-
-
-void wxDCBase::DoGradientFillLinear(const wxRect& rect,
- const wxColour& initialColour,
- const wxColour& destColour,
- wxDirection nDirection)
-{
- // save old pen
- wxPen oldPen = m_pen;
- wxBrush oldBrush = m_brush;
-
- wxUint8 nR1 = initialColour.Red();
- wxUint8 nG1 = initialColour.Green();
- wxUint8 nB1 = initialColour.Blue();
- wxUint8 nR2 = destColour.Red();
- wxUint8 nG2 = destColour.Green();
- wxUint8 nB2 = destColour.Blue();
- wxUint8 nR, nG, nB;
-
- if ( nDirection == wxEAST || nDirection == wxWEST )
- {
- wxInt32 x = rect.GetWidth();
- wxInt32 w = x; // width of area to shade
- wxInt32 xDelta = w/256; // height of one shade bend
- if (xDelta < 1)
- xDelta = 1;
-
- while (x >= xDelta)
- {
- x -= xDelta;
- if (nR1 > nR2)
- nR = nR1 - (nR1-nR2)*(w-x)/w;
- else
- nR = nR1 + (nR2-nR1)*(w-x)/w;
-
- if (nG1 > nG2)
- nG = nG1 - (nG1-nG2)*(w-x)/w;
- else
- nG = nG1 + (nG2-nG1)*(w-x)/w;
-
- if (nB1 > nB2)
- nB = nB1 - (nB1-nB2)*(w-x)/w;
- else
- nB = nB1 + (nB2-nB1)*(w-x)/w;
-
- wxColour colour(nR,nG,nB);
- SetPen(wxPen(colour, 1, wxSOLID));
- SetBrush(wxBrush(colour));
- if(nDirection == wxEAST)
- DrawRectangle(rect.GetRight()-x-xDelta+1, rect.GetTop(),
- xDelta, rect.GetHeight());
- else //nDirection == wxWEST
- DrawRectangle(rect.GetLeft()+x, rect.GetTop(),
- xDelta, rect.GetHeight());
- }
- }
- else // nDirection == wxNORTH || nDirection == wxSOUTH
- {
- wxInt32 y = rect.GetHeight();
- wxInt32 w = y; // height of area to shade
- wxInt32 yDelta = w/255; // height of one shade bend
- if (yDelta < 1)
- yDelta = 1;
-
- while (y > 0)
- {
- y -= yDelta;
- if (nR1 > nR2)
- nR = nR1 - (nR1-nR2)*(w-y)/w;
- else
- nR = nR1 + (nR2-nR1)*(w-y)/w;
-
- if (nG1 > nG2)
- nG = nG1 - (nG1-nG2)*(w-y)/w;
- else
- nG = nG1 + (nG2-nG1)*(w-y)/w;
-
- if (nB1 > nB2)
- nB = nB1 - (nB1-nB2)*(w-y)/w;
- else
- nB = nB1 + (nB2-nB1)*(w-y)/w;
-
- wxColour colour(nR,nG,nB);
- SetPen(wxPen(colour, 1, wxSOLID));
- SetBrush(wxBrush(colour));
- if(nDirection == wxNORTH)
- DrawRectangle(rect.GetLeft(), rect.GetTop()+y,
- rect.GetWidth(), yDelta);
- else //nDirection == wxSOUTH
- DrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta+1,
- rect.GetWidth(), yDelta);
- }
- }
-
- SetPen(oldPen);
- SetBrush(oldBrush);
-}
-
-void wxDCBase::DoGradientFillConcentric(const wxRect& rect,
- const wxColour& initialColour,
- const wxColour& destColour,
- const wxPoint& circleCenter)
-{
- //save the old pen color
- wxColour oldPenColour = m_pen.GetColour();
-
- wxUint8 nR1 = destColour.Red();
- wxUint8 nG1 = destColour.Green();
- wxUint8 nB1 = destColour.Blue();
- wxUint8 nR2 = initialColour.Red();
- wxUint8 nG2 = initialColour.Green();
- wxUint8 nB2 = initialColour.Blue();
- wxUint8 nR, nG, nB;
-
-
- //Radius
- wxInt32 cx = rect.GetWidth() / 2;
- wxInt32 cy = rect.GetHeight() / 2;
- wxInt32 nRadius;
- if (cx < cy)
- nRadius = cx;
- else
- nRadius = cy;
-
- //Offset of circle
- wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
- wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
-
- for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
- {
- for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
- {
- //get color difference
- wxInt32 nGradient = ((nRadius -
- (wxInt32)sqrt(
- pow((double)(x - cx - nCircleOffX), 2) +
- pow((double)(y - cy - nCircleOffY), 2)
- )) * 100) / nRadius;
-
- //normalize Gradient
- if (nGradient < 0 )
- nGradient = 0;
-
- //get dest colors
- nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
- nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
- nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
-
- //set the pixel
- m_pen.SetColour(wxColour(nR,nG,nB));
- DrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop()));
- }
- }
- //return old pen color
- m_pen.SetColour(oldPenColour);
-}
-
-/*
-Notes for wxWidgets DrawEllipticArcRot(...)
-
-wxDCBase::DrawEllipticArcRot(...) draws a rotated elliptic arc or an ellipse.
-It uses wxDCBase::CalculateEllipticPoints(...) and wxDCBase::Rotate(...),
-which are also new.
-
-All methods are generic, so they can be implemented in wxDCBase.
-DoDrawEllipticArcRot(...) is virtual, so it can be called from deeper
-methods like (WinCE) wxDC::DoDrawArc(...).
-
-CalculateEllipticPoints(...) fills a given list of wxPoints with some points
-of an elliptic arc. The algorithm is pixel-based: In every row (in flat
-parts) or every column (in steep parts) only one pixel is calculated.
-Trigonometric calculation (sin, cos, tan, atan) is only done if the
-starting angle is not equal to the ending angle. The calculation of the
-pixels is done using simple arithmetic only and should perform not too
-bad even on devices without floating point processor. I didn't test this yet.
-
-Rotate(...) rotates a list of point pixel-based, you will see rounding errors.
-For instance: an ellipse rotated 180 degrees is drawn
-slightly different from the original.
-
-The points are then moved to an array and used to draw a polyline and/or polygon
-(with center added, the pie).
-The result looks quite similar to the native ellipse, only e few pixels differ.
-
-The performance on a desktop system (Athlon 1800, WinXP) is about 7 times
-slower as DrawEllipse(...), which calls the native API.
-An rotated ellipse outside the clipping region takes nearly the same time,
-while an native ellipse outside takes nearly no time to draw.
-
-If you draw an arc with this new method, you will see the starting and ending angles
-are calculated properly.
-If you use DrawEllipticArc(...), you will see they are only correct for circles
-and not properly calculated for ellipses.
-
-Peter Lenhard
-p.lenhard@t-online.de
-*/
-
-#ifdef __WXWINCE__
-void wxDCBase::DoDrawEllipticArcRot( wxCoord x, wxCoord y,
- wxCoord w, wxCoord h,
- double sa, double ea, double angle )
-{
- wxPointList list;
-
- CalculateEllipticPoints( &list, x, y, w, h, sa, ea );
- Rotate( &list, angle, wxPoint( x+w/2, y+h/2 ) );
-
- // Add center (for polygon/pie)
- list.Append( new wxPoint( x+w/2, y+h/2 ) );
-
- // copy list into array and delete list elements
- int n = list.GetCount();
- wxPoint *points = new wxPoint[n];
- int i = 0;
- wxPointList::compatibility_iterator node;
- for ( node = list.GetFirst(); node; node = node->GetNext(), i++ )
- {
- wxPoint *point = node->GetData();
- points[i].x = point->x;
- points[i].y = point->y;
- delete point;
- }
-
- // first draw the pie without pen, if necessary
- if( GetBrush() != *wxTRANSPARENT_BRUSH )
- {
- wxPen tempPen( GetPen() );
- SetPen( *wxTRANSPARENT_PEN );
- DoDrawPolygon( n, points, 0, 0 );
- SetPen( tempPen );
- }
-
- // then draw the arc without brush, if necessary
- if( GetPen() != *wxTRANSPARENT_PEN )
- {
- // without center
- DoDrawLines( n-1, points, 0, 0 );
- }
-
- delete [] points;
-
-} // DrawEllipticArcRot
-
-void wxDCBase::Rotate( wxPointList* points, double angle, wxPoint center )
-{
- if( angle != 0.0 )
- {
- double pi(M_PI);
- double dSinA = -sin(angle*2.0*pi/360.0);
- double dCosA = cos(angle*2.0*pi/360.0);
- wxPointList::compatibility_iterator node;
- for ( node = points->GetFirst(); node; node = node->GetNext() )
- {
- wxPoint* point = node->GetData();
-
- // transform coordinates, if necessary
- if( center.x ) point->x -= center.x;
- if( center.y ) point->y -= center.y;
-
- // calculate rotation, rounding simply by implicit cast to integer
- int xTemp = point->x * dCosA - point->y * dSinA;
- point->y = point->x * dSinA + point->y * dCosA;
- point->x = xTemp;
-
- // back transform coordinates, if necessary
- if( center.x ) point->x += center.x;
- if( center.y ) point->y += center.y;
- }
- }
-}
-
-void wxDCBase::CalculateEllipticPoints( wxPointList* points,
- wxCoord xStart, wxCoord yStart,
- wxCoord w, wxCoord h,
- double sa, double ea )
-{
- double pi = M_PI;
- double sar = 0;
- double ear = 0;
- int xsa = 0;
- int ysa = 0;
- int xea = 0;
- int yea = 0;
- int sq = 0;
- int eq = 0;
- bool bUseAngles = false;
- if( w<0 ) w = -w;
- if( h<0 ) h = -h;
- // half-axes
- wxCoord a = w/2;
- wxCoord b = h/2;
- // decrement 1 pixel if ellipse is smaller than 2*a, 2*b
- int decrX = 0;
- if( 2*a == w ) decrX = 1;
- int decrY = 0;
- if( 2*b == h ) decrY = 1;
- // center
- wxCoord xCenter = xStart + a;
- wxCoord yCenter = yStart + b;
- // calculate data for start and end, if necessary
- if( sa != ea )
- {
- bUseAngles = true;
- // normalisation of angles
- while( sa<0 ) sa += 360;
- while( ea<0 ) ea += 360;
- while( sa>=360 ) sa -= 360;
- while( ea>=360 ) ea -= 360;
- // calculate quadrant numbers
- if( sa > 270 ) sq = 3;
- else if( sa > 180 ) sq = 2;
- else if( sa > 90 ) sq = 1;
- if( ea > 270 ) eq = 3;
- else if( ea > 180 ) eq = 2;
- else if( ea > 90 ) eq = 1;
- sar = sa * pi / 180.0;
- ear = ea * pi / 180.0;
- // correct angle circle -> ellipse
- sar = atan( -a/(double)b * tan( sar ) );
- if ( sq == 1 || sq == 2 ) sar += pi;
- ear = atan( -a/(double)b * tan( ear ) );
- if ( eq == 1 || eq == 2 ) ear += pi;
- // coordinates of points
- xsa = xCenter + a * cos( sar );
- if( sq == 0 || sq == 3 ) xsa -= decrX;
- ysa = yCenter + b * sin( sar );
- if( sq == 2 || sq == 3 ) ysa -= decrY;
- xea = xCenter + a * cos( ear );
- if( eq == 0 || eq == 3 ) xea -= decrX;
- yea = yCenter + b * sin( ear );
- if( eq == 2 || eq == 3 ) yea -= decrY;
- } // if iUseAngles
- // calculate c1 = b^2, c2 = b^2/a^2 with a = w/2, b = h/2
- double c1 = b * b;
- double c2 = 2.0 / w;
- c2 *= c2;
- c2 *= c1;
- wxCoord x = 0;
- wxCoord y = b;
- long x2 = 1;
- long y2 = y*y;
- long y2_old = 0;
- long y_old = 0;
- // Lists for quadrant 1 to 4
- wxPointList pointsarray[4];
- // Calculate points for first quadrant and set in all quadrants
- for( x = 0; x <= a; ++x )
- {
- x2 = x2+x+x-1;
- y2_old = y2;
- y_old = y;
- bool bNewPoint = false;
- while( y2 > c1 - c2 * x2 && y > 0 )
- {
- bNewPoint = true;
- y2 = y2-y-y+1;
- --y;
- }
- // old y now to big: set point with old y, old x
- if( bNewPoint && x>1)
- {
- int x1 = x - 1;
- // remove points on the same line
- pointsarray[0].Insert( new wxPoint( xCenter + x1 - decrX, yCenter - y_old ) );
- pointsarray[1].Append( new wxPoint( xCenter - x1, yCenter - y_old ) );
- pointsarray[2].Insert( new wxPoint( xCenter - x1, yCenter + y_old - decrY ) );
- pointsarray[3].Append( new wxPoint( xCenter + x1 - decrX, yCenter + y_old - decrY ) );
- } // set point
- } // calculate point
-
- // Starting and/or ending points for the quadrants, first quadrant gets both.
- pointsarray[0].Insert( new wxPoint( xCenter + a - decrX, yCenter ) );
- pointsarray[0].Append( new wxPoint( xCenter, yCenter - b ) );
- pointsarray[1].Append( new wxPoint( xCenter - a, yCenter ) );
- pointsarray[2].Append( new wxPoint( xCenter, yCenter + b - decrY ) );
- pointsarray[3].Append( new wxPoint( xCenter + a - decrX, yCenter ) );
-
- // copy quadrants in original list
- if( bUseAngles )
- {
- // Copy the right part of the points in the lists
- // and delete the wxPoints, because they do not leave this method.
- points->Append( new wxPoint( xsa, ysa ) );
- int q = sq;
- bool bStarted = false;
- bool bReady = false;
- bool bForceTurn = ( sq == eq && sa > ea );
- while( !bReady )
- {
- wxPointList::compatibility_iterator node;
- for( node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
- {
- // once: go to starting point in start quadrant
- if( !bStarted &&
- (
- node->GetData()->x < xsa+1 && q <= 1
- ||
- node->GetData()->x > xsa-1 && q >= 2
- )
- )
- {
- bStarted = true;
- }
-
- // copy point, if not at ending point
- if( bStarted )
- {
- if( q != eq || bForceTurn
- ||
- ( (wxPoint*) node->GetData() )->x > xea+1 && q <= 1
- ||
- ( (wxPoint*) node->GetData() )->x < xea-1 && q >= 2
- )
- {
- // copy point
- wxPoint* pPoint = new wxPoint( *(node->GetData()) );
- points->Append( pPoint );
- }
- else if( q == eq && !bForceTurn || node->GetData()->x == xea)
- {
- bReady = true;
- }
- }
- } // for node
- ++q;
- if( q > 3 ) q = 0;
- bForceTurn = false;
- bStarted = true;
- } // while not bReady
- points->Append( new wxPoint( xea, yea ) );
-
- // delete points
- for( q = 0; q < 4; ++q )
- {
- wxPointList::compatibility_iterator node;
- for( node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- delete p;
- }
- }
- }
- else
- {
- wxPointList::compatibility_iterator node;
- // copy whole ellipse, wxPoints will be deleted outside
- for( node = pointsarray[0].GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- points->Append( p );
- }
- for( node = pointsarray[1].GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- points->Append( p );
- }
- for( node = pointsarray[2].GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- points->Append( p );
- }
- for( node = pointsarray[3].GetFirst(); node; node = node->GetNext() )
- {
- wxPoint *p = node->GetData();
- points->Append( p );
- }
- } // not iUseAngles
-} // CalculateEllipticPoints
-
-#endif // __WXWINCE__
-
-#endif // wxUSE_NEW_DC
projects / wxWidgets.git / blobdiff