C++ GraphicsPath::AddEllipse方法代码示例

//-----------------------------------------------------------------------------
void GdiplusDrawContext::fillRadialGradient (CGraphicsPath* _path, const CGradient& gradient, const CPoint& center, CCoord radius, const CPoint& originOffset, bool evenOdd, CGraphicsTransform* t)
{
#if DEBUG
	DebugPrint ("WARNING: GdiplusDrawContext::fillRadialGradient is not working as expected ! FIXME\n");
#endif
	GdiplusGraphicsPath* gdiPlusPath = dynamic_cast<GdiplusGraphicsPath*> (_path);
	if (gdiPlusPath && pGraphics)
	{
		GdiplusDrawScope drawScope (pGraphics, currentState.clipRect, getCurrentTransform ());

		Gdiplus::GraphicsPath* path = gdiPlusPath->getGraphicsPath ();

		if (t)
		{
			Gdiplus::Matrix matrix;
			convert (matrix, *t);
			path = path->Clone ();
			path->Transform (&matrix);
		}

		path->SetFillMode (evenOdd ? Gdiplus::FillModeAlternate : Gdiplus::FillModeWinding);
		Gdiplus::PointF c1p ((Gdiplus::REAL)(center.x + originOffset.x), (Gdiplus::REAL)(center.y + originOffset.y));

		CRect boundingBox = gdiPlusPath->getBoundingBox ();
		Gdiplus::GraphicsPath brushPath;
		brushPath.AddEllipse ((Gdiplus::REAL)boundingBox.left, (Gdiplus::REAL)boundingBox.top, (Gdiplus::REAL)boundingBox.getWidth (), (Gdiplus::REAL)boundingBox.getHeight ());
		Gdiplus::Matrix graphicsMatrix;
		pGraphics->GetTransform (&graphicsMatrix);
		brushPath.Transform (&graphicsMatrix);

		Gdiplus::PathGradientBrush brush (&brushPath);
		// set center
		brush.SetCenterPoint (c1p);
		// set the colors
		Gdiplus::Color* colors = new Gdiplus::Color [gradient.getColorStops ().size ()];
		Gdiplus::REAL* positions = new Gdiplus::REAL [gradient.getColorStops ().size ()];
		uint32_t index = 0;
		for (CGradient::ColorStopMap::const_iterator it = gradient.getColorStops ().begin (); it != gradient.getColorStops ().end (); ++it, ++index)
		{
			CColor color = it->second;
			color.alpha = (int8_t)((float)color.alpha * currentState.globalAlpha);
			colors[index] = createGdiPlusColor (color);
			positions[index] = (Gdiplus::REAL)it->first;
		}
		brush.SetCenterColor (colors[0]);
		INT count = static_cast<INT> (gradient.getColorStops ().size ()) - 1;
		brush.SetSurroundColors (colors+1, &count);

		pGraphics->FillPath (&brush, path);
		if (path != gdiPlusPath->getGraphicsPath ())
			delete path;
		delete [] colors;
		delete [] positions;
	}
}

void GraphicsPath::AddEllipse(const RectF& rc) {
    Gdiplus::GraphicsPath* gp = reinterpret_cast<Gdiplus::GraphicsPath*>(_private);
    gp->AddEllipse(ToGDIRect<RectF, Gdiplus::RectF>(rc));
}

void CControlArrowStyleSelector::Draw(CDC* pDC)
{
	CRect rc(m_rcControl);
	int nCount = sizeof(arrowStyles) / sizeof(arrowStyles[0]);
	
	for (int i = 0; i < nCount; i++)
	{
		CRect rcButton = GetRect(i);
		
		if (i == m_nSelected || arrowStyles[i].iArrowStyle == m_iArrowStyle)
		{
			BOOL bPressed = GetPressed() && i == m_nSelected;
			//GetPaintManager()->DrawControlEntry(pDC, &rcButton, m_bEnabled, i == m_nSelected, bPressed, arrowStyles[i].iArrowStyle == m_iArrowStyle, FALSE, GetParent()->GetPosition());
         GetPaintManager()->DrawRectangle(pDC, &rcButton, i == m_nSelected, bPressed, m_bEnabled, arrowStyles[i].iArrowStyle == m_iArrowStyle, FALSE, GetParent()->GetType(), GetParent()->GetPosition());
		}
			
		Gdiplus::Graphics gdipGraphics(pDC->m_hDC);
		Gdiplus::Pen pen(Gdiplus::Color(255, 0, 0, 0), 1);
      Gdiplus::SolidBrush brush(Gdiplus::Color(255, 0, 0, 0));
/*		if (arrowStyles[i].iArrowStyle == msoLineRoundDot)
			pen.SetDashCap(Gdiplus::DashCapTriangle);
		else
			pen.SetDashCap(Gdiplus::DashCapFlat);
		pen.SetDashPattern(arrowStyles[i].dashValues, arrowStyles[i].iDashValueCount);
		pen.SetDashStyle(Gdiplus::DashStyleCustom);*/
      
//      Gdiplus::Point points[3] = {Gdiplus::Point(0, 0), Gdiplus::Point(0, 0), Gdiplus::Point(0, 0)};
      Gdiplus::GraphicsPath startCapPath;
      Gdiplus::GraphicsPath endCapPath;

   // Create a CustomLineCap object with capPath as the stroke path.

      int yPos = rcButton.top + XTP_AS_SELECTOR_HEIGHT / 2;

      switch(arrowStyles[i].startCap)
      {
      case Gdiplus::LineCapArrowAnchor:
         {
            Gdiplus::AdjustableArrowCap capStart(9, 9, false);
            pen.SetCustomStartCap(&capStart);
            break;
         }

      case Gdiplus::LineCapTriangle:
         {
            Gdiplus::AdjustableArrowCap capStart(6, 5, true);
            pen.SetCustomStartCap(&capStart);
            break;
         }

      case Gdiplus::LineCapDiamondAnchor:
         {
            Gdiplus::Point points[4] = {Gdiplus::Point(rcButton.left , yPos ), Gdiplus::Point(rcButton.left + 5, yPos + 5), Gdiplus::Point(rcButton.left + 10, yPos), Gdiplus::Point(rcButton.left + 5, yPos - 5)};
            startCapPath.AddPolygon(points, 4);
            break;
         }
      case Gdiplus::LineCapRoundAnchor:
         {
            Gdiplus::Rect rect(rcButton.left, yPos - 5, 10, 10);
            startCapPath.AddEllipse(rect);
            break;
         }

      default:
         break;
      }

      switch(arrowStyles[i].endCap)
      {
      case Gdiplus::LineCapArrowAnchor:
         {
            Gdiplus::AdjustableArrowCap capEnd(9, 9, false);
            pen.SetCustomEndCap(&capEnd);
            break;
         }

      case Gdiplus::LineCapTriangle:
         {
            Gdiplus::AdjustableArrowCap capEnd(6, 5, true);
            pen.SetCustomEndCap(&capEnd);
            break;
         }

      case Gdiplus::LineCapDiamondAnchor:
         {
            Gdiplus::Point points[4] = {Gdiplus::Point(rcButton.right - 10 , yPos ), Gdiplus::Point(rcButton.right - 5, yPos + 5), Gdiplus::Point(rcButton.right, yPos), Gdiplus::Point(rcButton.right - 5, yPos - 5)};
            endCapPath.AddPolygon(points, 4);
            break;
         }
      case Gdiplus::LineCapRoundAnchor:
         {
            Gdiplus::Rect rect(rcButton.right - 10, yPos - 5, 10, 10);
            endCapPath.AddEllipse(rect);
            break;
         }

      default:
         break;
      }

//.........这里部分代码省略.........