void CGraphPanel::AddPoint(SGraphChange* sgc)
{
//get main view pointer
if (sgc->main_wnd_ptr == NULL) return;
SSinglePoint ssp;
CGraphProps* sgp = sgc->main_wnd_ptr->GetGraph(sgc->graphnum);
if (!sgp->IsVisible())
{
//if graph is not visible - do not do anything here
return;
};
sgp->GetPoint(sgc->index, &ssp);
BOOL bNeedRedraw = FALSE;
if ((unsigned long)(m_grflags & GRAPH_AUTOSCALE))
{
//if grafix is autoscaled - just recalc coordinates and redraw the window
if (ssp.x<__min(GetX1(), GetX2()))
{
SetMinX(ssp.x, FALSE);
bNeedRedraw = TRUE;
};
if (ssp.x>__max(GetX1(), GetX2()))
{
SetMaxX(ssp.x, FALSE);
bNeedRedraw = TRUE;
};
if (ssp.y<__min(GetY1(), GetY2()))
{
SetMinY(ssp.y, FALSE);
bNeedRedraw = TRUE;
};
if (ssp.y>__max(GetY1(), GetY2()))
{
SetMaxY(ssp.y, FALSE);
bNeedRedraw = TRUE;
};
};
//draw new point
if (bNeedRedraw)
{
if (sgc->bRedraw)
{
UpdateGraphWindow(NULL);
};
return;
};
if (!sgc->bRedraw || offscreen == NULL) return;
//if point is inside the graph - we need invalidate the whole picture
if (sgc->index!=0 && sgc->index!=sgp->GetSize()-1)
{
if (sgc->bRedraw)
{
UpdateGraphWindow(NULL);
};
return;
};
int x, y, x1, y1;
x = (int)CurrentCoordsX->WtoX(ssp.x);
y = (int)CurrentCoordsY->WtoX(ssp.y);
CDC* dc = offscreen->GetDibCDC();
if (dc != NULL)
{
CDC* cdc = GetDC();
CPen* pen = sgp->GetPen();
CBrush* brush = sgp->GetBrush();
CPen* oldpen = (CPen*)dc->SelectObject(pen);
CBrush* oldbrush = (CBrush*)dc->SelectObject(brush);
if (sgp->GetSize()>1)
{
if (sgc->index == 0) sgp->GetPoint(1, &ssp);
if (sgc->index == sgp->GetSize()-1) sgp->GetPoint(sgc->index-1, &ssp);
x1 = (int)CurrentCoordsX->WtoX(ssp.x);
y1 = (int)CurrentCoordsY->WtoX(ssp.y);
if (x != x1 || y != y1)
{
if ((m_grflags & GRAPH_GRAPH_SCATTER) == 0)
{
dc->MoveTo(x, y);
dc->LineTo(x1, y1);
};
if ((m_grflags & GRAPH_SQUAREPOINTS) != 0)
{
DrawSquarePoint(dc, x, y);
};
CRect update_rect(x, y, x1, y1);
update_rect.NormalizeRect();
update_rect.InflateRect(GetSquareSide(dc) + 2, GetSquareSide(dc) + 2);
DoRedraw(cdc, update_rect);
};
} else
{
if ((m_grflags & GRAPH_SQUAREPOINTS) != 0)
{
DrawSquarePoint(dc, x, y);
CRect update_rect(x, y, x, y);
update_rect.NormalizeRect();
update_rect.InflateRect(GetSquareSide(dc) + 2, GetSquareSide(dc) + 2);
DoRedraw(cdc, update_rect);
};
};
dc->SelectObject(oldpen);
dc->SelectObject(oldbrush);
sgp->ReleasePen(pen);
sgp->ReleaseBrush(brush);
ReleaseDC(cdc);
};
}
void CGraphPanel::DrawPoints(CDC* dc, CRect& rect_to_draw)
{
//draw all the points
SSinglePoint ssp, ssp1;
int x, y, x1, y1, grnum;
if (CurrentCoordsX == NULL || CurrentCoordsY == NULL) return;
CGraphWnd* main_wnd = get_main_graph_window();
if (main_wnd == NULL) return;
//save current state of device context
int saved_dc = dc->SaveDC();
//set new clipping region
dc->IntersectClipRect(rect_to_draw);
//create new set of CCoordinates
CCoordinates coords_x(rect_to_draw.left, rect_to_draw.right, CurrentCoordsX->v1(), CurrentCoordsX->v2());
CCoordinates coords_y(rect_to_draw.bottom, rect_to_draw.top, CurrentCoordsY->v1(), CurrentCoordsY->v2());
CGraphProps* grprop = main_wnd->GetFirstGraph(&grnum);
while (grprop!=NULL)
{
if (grprop->GetSize() ==0 || !grprop->IsVisible())
{
grprop = main_wnd->GetNextGraph(&grnum);
continue;
};
//set color
CPen* pen = grprop->GetPen();
CBrush* brush = grprop->GetBrush();
CPen* oldpen = (CPen*)dc->SelectObject(pen);
CBrush* oldbrush = (CBrush*)dc->SelectObject(brush);
grprop->GetPoint(0, &ssp);
x = (int)coords_x.WtoX(ssp.x);
y = (int)coords_y.WtoX(ssp.y);
if ((long)(m_grflags & GRAPH_SQUAREPOINTS)!=0) DrawSquarePoint(dc, x, y);
for (int i=1; i<grprop->GetSize(); i++)
{
grprop->GetPoint(i, &ssp);
x1 = (int)coords_x.WtoX(ssp.x);
y1 = (int)coords_y.WtoX(ssp.y);
if (x != x1 || y != y1)
{
if ((m_grflags & GRAPH_SQUAREPOINTS)!=0) DrawSquarePoint(dc, x1, y1);
if ((m_grflags & GRAPH_GRAPH_SCATTER) == 0)
{
dc->MoveTo(x, y);
dc->LineTo(x1, y1);
};
x = x1; y = y1;
};
};
dc->SelectObject(oldpen);
dc->SelectObject(oldbrush);
grprop->ReleasePen(pen);
grprop->ReleaseBrush(brush);
grprop = main_wnd->GetNextGraph(&grnum);
};
dc->RestoreDC(saved_dc);
}