LightningChart Support Forums

I'm having an issue with the Axes Title when I change the font size; the containing "rectangle" is not recalculated when binding. I believe this was fixed for annotations, but I'm seeing this on Chart title as well. Is there a way to force a redraw? I've tried FullRepaint, but that doesn't do it.

I've attached 2 files that show the cutoff after changing the size.

You are right, there is a problem in font size setter.

It needs creating a new font:
m_chart.ViewXY.XAxes[0].Title.Font = new WPFFont(m_chart.ViewXY.XAxes[0].Title.Font.Family.ToString(), m_chart.ViewXY.XAxes[0].Title.Font.Size + 2f);

Then the size is adjusted correctly.

We'll provide fix in the next assembly pack. Our apologies.

Thanks Pasi!

Do you have an estimate on time when the next assembly will be coming?

2-3 weeks.

We are using V8.1.2. So, I have the same problem with the font size. I use the following code to update fonts size.

try
{
BeginUpdate();
if (xAxisChart.LabelsFont.Size != value)
{
xAxisChart.LabelsFont.Size = value;
yAxisChart.LabelsFont.Size = value;
xAxisChart.Title.Font.Size = value;
yAxisChart.Title.Font.Size = value;
LegendBox.SeriesTitleFont.Size = value;
}
Chart.UpdateLayout();
}
finally
{
EndUpdate();
}

If I start from low font and move to higher font, the labels of Y axis and Legend are cut off.

Everything works if I plot the points again. Do I have to do this?

Hi,

It should be enough to include pair of BeginUpdate() and EndUpdate() method call. Chart’s EndUpdate() methods just informs chart that new frame should be rendered.
I don't see any problems, at least in semi-bindable LightningChart v8.2.2.1: with each Value increase, labels and Title increased, and margins have been updated.
Check that you did not use manual margins: _chart.ViewXY.AxisLayout.AutoAdjustMargins = true

There is no use for Chart.UpdateLayout() call.
If you want to re-create all draw data use _chart.FullRepaint();

Hope this helps.
All the best.