[Solved] Horizontal Bar Label Clipping Issue

[Heath Morris]

I was tasked with removing a clipping issue on the left and right edges of the plot area when using a horizontal bar series. Just wanted to share what i did if it can help anyone else. See the before and after png. I would love some feedback if there is a better way to do this.

using System.Windows;
using Telerik.Charting;
using Telerik.Windows.Controls.ChartView;

namespace MyApplication.labelStrategies
{
    /// <summary>
    /// This class when applied to a labelDefinition will add padding to the end values
    /// </summary>
    public class HorizontalBarSeriesLabelStrategy : ChartSeriesLabelStrategy
    {
        #region Methods
        public override LabelStrategyOptions Options
        {
            get
            {
                return LabelStrategyOptions.Arrange;
            }
        }

        public override RadRect GetLabelLayoutSlot(DataPoint point, FrameworkElement visual, int labelIndex)
        {
            // get the Plot Area
            RadRect plotArea = ((BarSeries)point.Presenter).Chart.PlotAreaClip;

            // Where is the middle?
            double xPadding = ((point.LayoutSlot.Width - visual.ActualWidth) / 2);

            // if we are clipping on the left side of the plot area
            if (xPadding < 0 && point.LayoutSlot.Location.X <= plotArea.X)
            {
                // add 5 pixels of padding
                xPadding = 5;
            }
            // are we clipping on the right edge of plot area?
            else if (point.LayoutSlot.Location.X >= (plotArea.Width + plotArea.X - visual.ActualWidth))
            {
                // show the label with 5 pixels of padding on the right side.
                xPadding = (-1 * (visual.ActualWidth + 5)) + (plotArea.Width + plotArea.X - point.LayoutSlot.Location.X);
            }

            // Add the padding
            double x = point.LayoutSlot.X + xPadding;

            // set y in the middle
            double y = point.LayoutSlot.Y + ((point.LayoutSlot.Height - visual.ActualHeight) / 2);

            // return the corrected RadRect
            return new RadRect(x, y, visual.ActualWidth, visual.ActualHeight);
        }
        #endregion Methods
    }
}

[Evgenia]

Hello Heath,

 This is indeed the best way to avoid clipping the bar series labels. You may find here some alternatives as well.

Kind regards,
Evgenia
the Telerik team