Steema Central

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      public void Activate()
      {
          //do the initial Drawing.
          if (Data.Tags.Count > 0)
            RedrawTrends();
      }

      public void RedrawTrends()
      {
              //clear the existing series.
            if (TeeChart.Series.Count > 0)
            {
              TeeChart.Series.Clear();
              Count = 0;
            }

            //It creates the Series if Series is not there 
            //and add the series to Series Collection of teechart
            DrawTrends();   
     
            //Now i want to draw the rectacgles on top of the UI
            DrawMarkRanges(Data, ViewType);
     }
      private void DrawMarkRanges(List<TagInfo> TagInfosUpdated, string vcMarkType)
      {
        Rectangle _Rect = TeeChart.Chart.ChartRect;
        //Get the width of the labels for veritcal axis
        int iLeftAxisLabelWidth = (TeeChart.Axes.Left.Labels.Visible == true) ? TeeChart.Axes.Left.Labels.Right : 0;


        double _ColumnWidth = (TeeChart.Chart.Width - iLeftAxisLabelWidth) / iVerLines;
        double _RowHeight = ((double)(_Rect.Height) / (double)(iHorLines));

        ForNormalizedScale = ScaleType == TrendScale.Normalized ? true : false;

        //Calculate the top value to start
        foreach (TagInfo _TagInfo in TagInfosUpdated)
        {
          IRangeHolder _RangeHolder = _TagInfo.Tag.GetRangeHolder();
          foreach (IRange _Range in _RangeHolder.Ranges)
          {
            if (_Range.RangeMarkType == vcMarkType && ForNormalizedScale)
            {
              Series _Series = TeeChart.Series.WithTitle(_TagInfo.Tag.Name);
              DateTime StartTime = _Range.StartTime;
              DateTime EndTime = _Range.EndTime;
              double dSTime = _TagInfo.Tag.GetTimeSeriesIndex(StartTime.ToOADate());
              double dETime = _TagInfo.Tag.GetTimeSeriesIndex(EndTime.ToOADate());
              _StartIndexMouseLoc = TeeChart.Axes.Bottom.CalcXPosValue(dSTime);  //Here it is returning 0 even though dSTime is a valid value
             _EndIndexMouseLoc = TeeChart.Axes.Bottom.CalcXPosValue(dETime);     //Here it is returning 0 even though dETime is a valid value

              int iLeft = _StartIndexMouseLoc > _EndIndexMouseLoc ? _EndIndexMouseLoc : _StartIndexMouseLoc; ;
              int iWidth = _StartIndexMouseLoc > _EndIndexMouseLoc ? _StartIndexMouseLoc - _EndIndexMouseLoc : _EndIndexMouseLoc - _StartIndexMouseLoc;
              int iTop = _Series.CalcYPosValue(_Series.MaxYValue());
              int iHeight = _Series.CalcYPosValue(_Series.MinYValue()) - iTop;
              PaintRangeMark(iLeft, iWidth, iTop, iHeight, vcMarkType);
            }
            else if(_Range.RangeMarkType == vcMarkType && !ForNormalizedScale)   //For Single and Multiple scale
            {
              DateTime StartTime = _Range.StartTime;
              DateTime EndTime = _Range.EndTime;
              double dSTime = _TagInfo.Tag.GetTimeSeriesIndex(StartTime.ToOADate());
              double dETime = _TagInfo.Tag.GetTimeSeriesIndex(EndTime.ToOADate());
              _StartIndexMouseLoc = TeeChart.Axes.Bottom.CalcXPosValue(dSTime);     //Here it is returning 0 even though dSTime is a valid value
              _EndIndexMouseLoc = TeeChart.Axes.Bottom.CalcXPosValue(dETime);        //Here it is returning 0 even though dETime is a valid value

              //We can draw rectangle of our own here
              int iLeft = _StartIndexMouseLoc > _EndIndexMouseLoc ? _EndIndexMouseLoc : _StartIndexMouseLoc; 
              int iWidth = _StartIndexMouseLoc > _EndIndexMouseLoc ? _StartIndexMouseLoc - _EndIndexMouseLoc : _EndIndexMouseLoc - _StartIndexMouseLoc;
              int iTop = _Rect.Top;
              int iHeight = _Rect.Bottom - _Rect.Top;
              PaintRangeMark(iLeft, iWidth, iTop, iHeight, vcMarkType);         //Paintinng the rectangle iLeft and i Width is coming as 0.
            }
          }
        }
      }

Code: Select all

Activate()
{
DrawTrends();
MarkingUpdated();
}
DrawTrends()
{
//Create the data series and add the Series to the SeriesCollection
TeeChart1.Draw();
}
MarkingUpdated()
{
//Calculate the axis position here and do something
}