private void chtChart_MouseMove(object sender, MouseEventArgs e)
{
double currentScrollPosition = chtChart.ChartAreas[0].AxisX.ScaleView.Position;
double newScrollPosition = 0;
double currentPosition = 0;
if (chtChart.Series.Count > 0 && e.Button == System.Windows.Forms.MouseButtons.Left && e.X > 0 && e.X < chtChart.Width)
{
currentPosition = chtChart.ChartAreas[0].AxisX.PixelPositionToValue(e.X);
double displacement = this.lastPosition - currentPosition;
newScrollPosition = chtChart.ChartAreas[0].AxisX.ScaleView.Position + displacement;
chtChart.ChartAreas[0].AxisX.ScaleView.Scroll(newScrollPosition);
currentPosition = chtChart.ChartAreas[0].AxisX.PixelPositionToValue(e.X);
}
if (chtChart.Series.Count > 0 && e.Button == System.Windows.Forms.MouseButtons.Left && (chtChart.ChartAreas[0].AxisX.ScaleView.Position >= maxBars || chtChart.ChartAreas[0].AxisX.ScaleView.Position <= 1))
{
ChartScrollDirectionMode scrollDirection = chtChart.ChartAreas[0].AxisX.ScaleView.Position >= maxBars ? ChartScrollDirectionMode.LeftToRight : ChartScrollDirectionMode.RightToLeft;
if (RequestUpdate != null && RequestUpdate(lastDateTimePosition, priceActionChart.IndexKeyForTime[priceActionChart.IndexKeyForTime.Count - 1], priceActionChart.IndexKeyForTime[0], scrollDirection))
{
int index = priceActionChart.TimeKeyForIndex[lastDateTimePosition];
newScrollPosition = index - chtChart.ChartAreas[0].AxisX.PixelPositionToValue(e.X);
chtChart.ChartAreas[0].AxisX.ScaleView.Scroll(newScrollPosition);
RefreshLastPosition(e.X);
}
}
}
private bool OnRequestUpdate(DateTime currentDateTime, DateTime startTime, DateTime endTime, ChartScrollDirectionMode scrollDirection)
{
if ((scrollDirection == ChartScrollDirectionMode.LeftToRight && startTime <= this.pricebarCache.StartBarDate) || (scrollDirection == ChartScrollDirectionMode.RightToLeft && endTime >= this.pricebarCache.EndBarDate))
{
return(false);
}
else
{
RefreshChart(currentDateTime);
return(true);
}
}
private bool OnRequestUpdate(DateTime currentDateTime, DateTime startTime, DateTime endTime, ChartScrollDirectionMode scrollDirection)
{
//if ((scrollDirection==ChartScrollDirectionMode.LeftToRight && startTime <= this.signalCacheNavigator.StartBarDate) || (scrollDirection==ChartScrollDirectionMode.RightToLeft && endTime >= this.signalCacheNavigator.EndBarDate))
//{
// return false;
//}
//else
//{
// RefreshChart(currentDateTime);
// return true;
//}
return(false);
}
