private void NavigateChart(ScrollableControlBase chart)
{
if (chart == null || !chart.Created)
{
return;
}
Size size = chart.ContentSize;
Rectangle viewPort = chart.DisplayRectangle;
if (FullRectangle.Width > ViewRectangle.Width)
{
if (FullRectangle.X >= ViewRectangle.X)
{
chart.SetScrollValue(ScrollBars.Horizontal, 0, true);
}
else if (FullRectangle.Right <= ViewRectangle.Right)
{
chart.SetScrollValue(ScrollBars.Horizontal, size.Width - viewPort.Width, true);
}
else
{
chart.SetScrollValue(ScrollBars.Horizontal,
(ViewRectangle.X - FullRectangle.X) * size.Width / FullRectangle.Width, true);
}
}
if (FullRectangle.Height > ViewRectangle.Height)
{
if (FullRectangle.Y >= ViewRectangle.Y)
{
chart.SetScrollValue(ScrollBars.Vertical, 0, true);
}
else if (FullRectangle.Bottom <= ViewRectangle.Bottom)
{
chart.SetScrollValue(ScrollBars.Vertical, size.Height - viewPort.Height, true);
}
else
{
chart.SetScrollValue(ScrollBars.Vertical,
(ViewRectangle.Y - FullRectangle.Y) * size.Height / FullRectangle.Height, true);
}
}
}
void OnChartChanged(ScrollableControlBase old)
{
if (old != null)
{
old.ContentSizeChanged -= Chart_ContentSizeChanged;
old.HScrollValueChanged -= Chart_HScrollValueChanged;
old.VScrollValueChanged -= Chart_VScrollValueChanged;
old.ViewUpdated -= Chart_ViewUpdated;
}
if (Chart != null)
{
Chart.ContentSizeChanged += Chart_ContentSizeChanged;
Chart.HScrollValueChanged += Chart_HScrollValueChanged;
Chart.VScrollValueChanged += Chart_VScrollValueChanged;
Chart.ViewUpdated += Chart_ViewUpdated;
}
InvalidateRanges();
InvalidateMap();
}
