public override TKChartPointLabel LabelForDataPoint(TKChart chart, TKChartData dataPoint, string propertyName, TKChartSeries series, nuint dataIndex)
{
// If it's a BarSeries use vertical label
if (series is TKChartColumnSeries)
{
if (this.rotateLabels)
{
return(CreateVerticalLabel(series, (TKChartDataPoint)dataPoint));
}
else
{
return(CreateHorizontalLabel(series, (TKChartDataPoint)dataPoint));
}
}
if (series is TKChartDonutSeries)
{
return(CreateDonutLabel(series, (TKChartDataPoint)dataPoint));
}
if (series is TKChartPieSeries)
{
return(CreatePieLabel(series, (TKChartDataPoint)dataPoint));
}
// use horizontal label for everything else
return(CreateHorizontalLabel(series, (TKChartDataPoint)dataPoint));
}
public override void PointDeselected(TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
if (this.labelRender != null)
{
this.labelRender.SelectedDataPoint = -1;
}
}
public override void PointSelected (TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
if (this.labelRender != null) {
this.labelRender.SelectedSeries = (int)series.Index;
this.labelRender.SelectedDataPoint = index;
}
}
public override void PointSelected(TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
if (this.labelRender != null)
{
this.labelRender.SelectedSeries = (int)series.Index;
this.labelRender.SelectedDataPoint = index;
}
}
public override TKChartPointLabel LabelForDataPoint (TKChart chart, TKChartData dataPoint, string propertyName, TKChartSeries series, nuint dataIndex)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
if (series.Index == (nuint)this.selectedSeriesIndex && dataIndex == (nuint)this.selectedDataPointIndex) {
return new MyPointLabel (point, series, String.Format ("{0}", point.DataYValue));
}
return new TKChartPointLabel (point, series, String.Format ("{0}", point.DataYValue));
}
public override TKChartPointLabel LabelForDataPoint(TKChart chart, TKChartData dataPoint, string propertyName, TKChartSeries series, nuint dataIndex)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
if (series.Index == (nuint)this.selectedSeriesIndex && dataIndex == (nuint)this.selectedDataPointIndex)
{
return(new MyPointLabel(point, series, String.Format("{0}", point.DataYValue)));
}
return(new TKChartPointLabel(point, series, String.Format("{0}", point.DataYValue)));
}
public override void RenderPointLabels(TKChartSeries series, CGRect bounds, CGContext ctx)
{
if (labelLayer != null)
{
labelLayer.RemoveFromSuperLayer();
}
for (int i = 0; i < series.Items.Length; i++)
{
TKChartData dataPoint = (TKChartData)series.Items [i];
CGPoint location = base.LocationForDataPoint(dataPoint, series, bounds);
if (!bounds.Contains(location))
{
continue;
}
TKChartPointLabel label = this.LabelForDataPoint(dataPoint, series, (uint)i);
CGRect labelRect;
TKChartPointLabelStyle labelStyle = series.Style.PointLabelStyle;
if (this.isSelectedPoint)
{
labelRect = new CGRect((float)(location.X - 17.5), (float)(location.Y - 10 - 2.5 * Math.Abs(labelStyle.LabelOffset.Vertical)), 35, 30);
if (labelRect.Y < bounds.Y)
{
this.labelLayer.IsOutsideBounds = true;
labelRect.Y = (float)(location.Y + 10 + 2.5 * Math.Abs(labelStyle.LabelOffset.Vertical) - labelRect.Size.Height);
}
else
{
this.labelLayer.IsOutsideBounds = false;
}
this.labelLayer.Frame = labelRect;
this.Render.AddSublayer(this.labelLayer);
this.labelLayer.SetNeedsDisplay();
}
else
{
CGSize labelSize = label.SizeThatFits(bounds.Size);
labelRect = new CGRect((float)(location.X - labelSize.Width / 2.0 + labelStyle.LabelOffset.Horizontal),
(float)(location.Y - labelSize.Height / 2.0 + labelStyle.LabelOffset.Vertical), labelSize.Width, labelSize.Height);
if (labelRect.Y < this.Render.Bounds.Y)
{
labelRect.Y = (float)(location.Y - labelSize.Height / 2.0 + Math.Abs(labelStyle.LabelOffset.Vertical));
}
label.DrawInContext(ctx, labelRect, new TKChartVisualPoint(new PointF(0, 0)), UIColor.White);
}
}
}
public override TKChartPointLabel LabelForDataPoint(TKChart chart, TKChartData dataPoint, string propertyName, TKChartSeries series, nuint dataIndex)
{
// On iOS, a vertical bar chart is a "Column" series
if (series is TKChartColumnSeries)
{
// If it's a BarSeries use vertical label
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
series.Style.ShapeMode = TKChartSeriesStyleShapeMode.AlwaysShow;
series.Style.PointLabelStyle.LayoutMode = TKChartPointLabelLayoutMode.Manual;
series.Style.PointLabelStyle.Fill = new TKSolidFill(UIColor.White);
series.Style.PointLabelStyle.Insets = new UIEdgeInsets(-1, -3, -1, -3);
// Position the label at your preferred position
series.Style.PointLabelStyle.LabelOffset = new UIOffset(0, 200);
// Set the text properties
series.Style.PointLabelStyle.TextOrientation = TKChartPointLabelOrientation.Vertical;
series.Style.PointLabelStyle.TextAlignment = UITextAlignment.Center;
series.Style.PointLabelStyle.TextColor = UIColor.Blue;
series.Style.PointLabelStyle.TextHidden = false;
return(new TKChartPointLabel(point, series, point.DataYValue.ToString()));
}
else
{
// use horizontal label for everything else
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
series.Style.PointShape = new TKPredefinedShape(TKShapeType.Circle, new System.Drawing.SizeF(8, 8));
series.Style.PointLabelStyle.TextHidden = false;
series.Style.PointLabelStyle.LabelOffset = new UIOffset(0, -24);
series.Style.PointLabelStyle.Insets = new UIEdgeInsets(-1, -5, -1, -5);
series.Style.PointLabelStyle.LayoutMode = TKChartPointLabelLayoutMode.Manual;
series.Style.PointLabelStyle.Font = UIFont.SystemFontOfSize(10);
series.Style.PointLabelStyle.TextAlignment = UITextAlignment.Center;
series.Style.PointLabelStyle.Fill = new TKSolidFill(new UIColor((float)(108 / 255.0), (float)(181 / 255.0), (float)(250 / 255.0), (float)1.0));
series.Style.PointLabelStyle.ClipMode = TKChartPointLabelClipMode.Hidden;
series.Style.PointLabelStyle.TextOrientation = TKChartPointLabelOrientation.Horizontal;
series.Style.PointLabelStyle.TextColor = UIColor.Red;
series.Style.ShapeMode = TKChartSeriesStyleShapeMode.AlwaysShow;
return(new TKChartPointLabel(point, series, $"{point.DataName}, {point.DataYValue}"));
}
}
public override TKChartPointLabel LabelForDataPoint (TKChartData dataPoint, TKChartSeries series, nuint dataIndex)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
if (series.Index == (nuint)this.SelectedSeries && dataIndex == (nuint)this.SelectedDataPoint) {
if (this.labelLayer == null) {
this.labelLayer = new SelectedPointLabel ();
}
this.labelLayer.LabelStyle = series.Style.PointLabelStyle;
this.labelLayer.Text = String.Format ("{0}", point.DataYValue);
this.isSelectedPoint = true;
return null;
}
this.isSelectedPoint = false;
return new TKChartPointLabel (dataPoint, series, String.Format ("{0}", point.DataYValue));
}
public override string TextForLabelAtPoint(TKChart chart, TKChartData dataPoint, TKChartSeries series, nuint dataIndex)
{
if (series is TKChartPieSeries)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
return(point.DataName);
}
else if (series is TKChartBarSeries)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
return(String.Format("{0}", point.DataXValue));
}
else if (series is TKChartOhlcSeries)
{
TKChartFinancialDataPoint point = (TKChartFinancialDataPoint)dataPoint;
return(String.Format("O:{0}\nH:{1}\nL:{2}\nC:{3}", point.Open, point.High, point.Low, point.Close));
}
return(String.Format("{0}", ((TKChartDataPoint)dataPoint).DataYValue));
}
public override TKChartPointLabel LabelForDataPoint(TKChartData dataPoint, TKChartSeries series, nuint dataIndex)
{
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
if (series.Index == (nuint)this.SelectedSeries && dataIndex == (nuint)this.SelectedDataPoint)
{
if (this.labelLayer == null)
{
this.labelLayer = new SelectedPointLabel();
}
this.labelLayer.LabelStyle = series.Style.PointLabelStyle;
this.labelLayer.Text = String.Format("{0}", point.DataYValue);
this.isSelectedPoint = true;
return(null);
}
this.isSelectedPoint = false;
return(new TKChartPointLabel(dataPoint, series, String.Format("{0}", point.DataYValue)));
}
public MyPointLabel(TKChartData dataPoint, TKChartSeries series, string text) : base(dataPoint, series, text)
{
}
public MyPointLabel(TKChartData dataPoint, TKChartPointLabelStyle style, string text)
: base(dataPoint, style, text)
{
}
public override void PointSelected(TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
this.selectedSeriesIndex = (int)series.Index;
this.selectedDataPointIndex = (int)index;
}
public MyPointLabel(TKChartData dataPoint, TKChartSeries series, string text) : base(dataPoint, series, text)
{
}
public MyPointLabel(TKChartData dataPoint, TKChartPointLabelStyle style, string text) : base(dataPoint, style, text)
{
}
public override string TextForLabelAtPoint(TKChart chart, TKChartData dataPoint, TKChartSeries series, nuint dataIndex)
{
if (series is TKChartPieSeries) {
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
return point.DataName;
}
else if (series is TKChartBarSeries) {
TKChartDataPoint point = (TKChartDataPoint)dataPoint;
return String.Format ("{0}", point.DataXValue);
}
else if (series is TKChartOhlcSeries) {
TKChartFinancialDataPoint point = (TKChartFinancialDataPoint)dataPoint;
return String.Format ("O:{0}\nH:{1}\nL:{2}\nC:{3}", point.Open, point.High, point.Low, point.Close);
}
return String.Format ("{0}", ((TKChartDataPoint)dataPoint).DataYValue);
}
public override void PointDeselected (TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
if (this.labelRender != null) {
this.labelRender.SelectedDataPoint = -1;
}
}
public override void PointDeselected(TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
// Here you can perform the desired action when the selection is changed.
}
public override void PointSelected(TKChart chart, TKChartData point, TKChartSeries series, nint index)
{
this.selectedSeriesIndex = (int)series.Index;
this.selectedDataPointIndex = (int)index;
}
