protected void DrawHorizontalLabels(SKCanvas canvas, SKRect frame, SKRect chart)
{
if (HorizontalLabelMode != LabelMode.None)
{
if (!string.IsNullOrEmpty(MinLabel) && !string.IsNullOrEmpty(MaxLabel))
{
canvas.DrawHorizontalText(MinLabel, chart.Left, frame.Bottom + HorizontalLabelTextSize, HorizontalLabelTextSize, HorizontalLabelColor.ToSKColor(), SKTextAlign.Center, isBold: true);
canvas.DrawHorizontalText(MaxLabel, chart.Right, frame.Bottom + HorizontalLabelTextSize, HorizontalLabelTextSize, HorizontalLabelColor.ToSKColor(), SKTextAlign.Center, isBold: true);
}
}
if (!string.IsNullOrEmpty(HorizontalUnit))
{
canvas.DrawHorizontalText(HorizontalUnit, chart.Right, frame.Bottom + (HorizontalLabelTextSize * 2), HorizontalLabelTextSize, HorizontalLabelColor.ToSKColor(), SKTextAlign.Left);
}
if (DisplayHorizontalValuesBySlider && IsSliderVisible)
{
var x = ChartType == ChartType.Linear ? TouchedPoint.X : chart.GetInsideXValue(TouchedPoint.X);
var valueItems = ChartEntries.GetChartValueItemFromX(x, frame, MaxItems, ChartType == ChartType.Linear);
var entry = valueItems?.FirstOrDefault()?.ChartValueItem;
if (string.IsNullOrEmpty(entry?.Label))
{
return;
}
x = ChartType == ChartType.Linear ? chart.GetInsideXValue(TouchedPoint.X) : entry.Point.X;
canvas.DrawHorizontalText(entry.Label, x, frame.Bottom + HorizontalLabelTextSize, HorizontalLabelTextSize, SliderColor.ToSKColor(), SKTextAlign.Center, isBold: true);
}
else if (HorizontalLabelMode == LabelMode.All)
{
var items = ChartValuesDistinct;
if (items?.Any() != true)
{
return;
}
var points = ChartEntries.FirstOrDefault().Items.Select(x => x.Point).ToArray();
for (int i = 0; i < items.Count(); i++)
{
var entry = items.ElementAt(i);
var point = points[i];
if (string.IsNullOrEmpty(entry?.Label) || entry?.Label == MinLabel || entry?.Label == MaxLabel)
{
continue;
}
canvas.DrawHorizontalText(entry.Label, point.X, frame.Bottom + HorizontalLabelTextSize, HorizontalLabelTextSize, HorizontalLabelColor.ToSKColor(), SKTextAlign.Center);
}
}
}