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LegendBox Customization
Posted: Wed Jan 14, 2015 9:25 pm
by blakeadkins
I'm showing a lot of channels (128) on 1 chart and the Legend Box covers a big portion of the chart. I'd like the legend to be accessible quickly if I need it. Is there a way to pin it or something like that and show when I hover over that? If not can this be added as a feature request?
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Re: LegendBox Customization
Posted: Wed Jan 14, 2015 10:55 pm
by ArctionPasi
There's currently no built-in feature for collapsing the legendbox, but here's the code to achieve this functionality:
Code: Select all
m_chart.ViewXY.LegendBox.MouseOverOn += new MouseEventHandler(LegendBox_MouseOverOn);
m_chart.ViewXY.LegendBox.MouseOverOff += new MouseEventHandler(LegendBox_MouseOverOff);
void LegendBox_MouseOverOff(object sender, MouseEventArgs e)
{
m_chart.BeginUpdate();
foreach (SeriesBaseXY series in m_chart.ViewXY.GetAll2DSeries())
series.ShowInLegendBox = false;
m_chart.EndUpdate();
}
void LegendBox_MouseOverOn(object sender, MouseEventArgs e)
{
m_chart.BeginUpdate();
foreach(SeriesBaseXY series in m_chart.ViewXY.GetAll2DSeries())
series.ShowInLegendBox = true;
m_chart.EndUpdate();
}
Re: LegendBox Customization
Posted: Thu Jan 15, 2015 9:46 pm
by blakeadkins
Is it possible that the LegendBox will eventually be made into a FrameworkElement so that i can be more easily manipulated and customized?
Re: LegendBox Customization
Posted: Fri Jan 16, 2015 12:08 pm
by ArctionPasi
FrameworkElement is not unfortunately a suitable approach, LightningChart uses low-level DirectX rendering. Mouse events and appearance settings are different from what FrameworkElement provides.
If LC's legend box doesn't provide suitable functionality for your application, you can of course create a custom UserControl, populating it from series titles, and placing it over the chart.