void CXTPFlowGraphPaintManager::RecalcConnectionLayout(CXTPFlowGraphDrawContext* /*pDC*/, CXTPFlowGraphConnection* pConnection)
{
CXTPFlowGraphConnectionPoint* pFrom = pConnection->GetOutputPoint();
CXTPFlowGraphConnectionPoint* pTo = pConnection->GetInputPoint();
if (pFrom == NULL)
return;
CPoint ptFrom, ptTo;
ptFrom = pFrom->GetNode()->GetLocation();
ptFrom.x += pFrom->GetNode()->GetSize().cx;
ptFrom.y += pFrom->m_rcPoint.CenterPoint().y;
if (pTo != NULL)
{
ptTo = pTo->GetNode()->GetLocation();
ptTo.y += pTo->m_rcPoint.CenterPoint().y;
if (pTo->GetType() == xtpFlowGraphPointInputAndOutput)
{
if (ptFrom.x > ptTo.x)
ptTo.x += pTo->GetNode()->GetSize().cx;
}
pConnection->m_ptInputPoint = ptTo;
}
else
{
ptTo = pConnection->m_ptInputPoint;
}
if (pFrom->GetType() == xtpFlowGraphPointInputAndOutput)
{
if (ptTo.x < ptFrom.x - pFrom->GetNode()->GetSize().cx / 2)
ptFrom.x -= pFrom->GetNode()->GetSize().cx;
}
pConnection->m_ptOutputPoint = ptFrom;
GraphicsPath* path = new GraphicsPath();
XTPFlowGraphConnectorType type = pConnection->GetStyle() == -1 ? m_nConnectorType : (XTPFlowGraphConnectorType)pConnection->GetStyle();
CPoint ptControlPoint = pConnection->GetControlPoint();
if (type == xtpFlowGraphConnectorStraight)
{
if (ptControlPoint != CPoint(-1, -1))
{
Point pts[] = {Point(ptFrom.x, ptFrom.y), Point(ptControlPoint.x, ptControlPoint.y), Point(ptTo.x, ptTo.y) };
path->AddLines(pts, 3);
}
else
{
path->AddLine(ptFrom.x, ptFrom.y, ptTo.x, ptTo.y);
}
}
else
{
if (ptControlPoint != CPoint(-1, -1))
{
/*PointF pt[3] = {PointF((REAL)ptFrom.x, (REAL)ptFrom.y), PointF((REAL)pConnection->GetControlPoint().x, (REAL)pConnection->GetControlPoint().y),
PointF((REAL)ptTo.x, (REAL)ptTo.y) };
path->AddCurve(pt, 3);*/
PointF pt2[4] = {PointF((REAL)ptFrom.x, (REAL)ptFrom.y),
PointF((REAL)ptControlPoint.x, (REAL)ptFrom.y), PointF((REAL)ptControlPoint.x, (REAL)ptTo.y),
PointF((REAL)ptTo.x, (REAL)ptTo.y) };
path->AddBeziers(pt2, 4);
}
else
{
PointF pt[4] = {PointF((REAL)ptFrom.x, (REAL)ptFrom.y), PointF((REAL)(ptFrom.x + ptTo.x) / 2, (REAL)ptFrom.y),
PointF(REAL(ptFrom.x + ptTo.x) / 2, (REAL)ptTo.y), PointF((REAL)ptTo.x, (REAL)ptTo.y) };
path->AddBeziers(pt, 4);
}
}
SAFE_DELETE(pConnection->m_pPath);
pConnection->m_pPath = path;
}
