Header

The SFGaugeHeader support allows you to show text, image, or any UI content inside the gauge control. A circular gauge can be made self-descriptive about the data. It can be measured with use of the header.

Adding header in circular gauge

Header

The SFGaugeHeader can be used to set a unique header for the circular gauge. You can add text as headers in a circular gauge. Multiple headers also can be added in a circular gauge.

c#

SFCircularGauge circularGauge = new SFCircularGauge();
            ObservableCollection<SFCircularScale> scales = new ObservableCollection<SFCircularScale>();
            SFCircularScale scale = new SFCircularScale();
            SFGaugeHeader header = new SFGaugeHeader();
            header.Text = (Foundation.NSString)"Speedometer";
            header.TextColor = UIColor.Black;
            circularGauge.Headers.Add(header);
            scale.StartValue = 0;
            scale.EndValue = 100;
            scales.Add(scale);
            circularGauge.Scales = scales;
            this.View.AddSubview(circularGauge);

Setting position for header

The Position property is used to place the header in a circular gauge. The value for Position should be specified in offset value. In the Point value, which has been given for the Position, first value represent x-coordinate and second value represents y-coordinate. By default, it is placed at (0.5, 0.7).

c#

SFCircularGauge circularGauge = new SFCircularGauge();
            ObservableCollection<SFCircularScale> scales = new ObservableCollection<SFCircularScale>();
            SFCircularScale scale = new SFCircularScale();
            SFGaugeHeader header = new SFGaugeHeader();
            header.Text =(Foundation.NSString) "Speedometer";
            header.TextColor = UIColor.Black;
            header.Position = new CoreGraphics.CGPoint((float)0.5, (float)0.5);
            circularGauge.Headers.Add(header);
            scale.StartValue = 0;
            scale.EndValue = 100;
            scales.Add(scale);
            circularGauge.Scales = scales;
            this.View.AddSubview(circularGauge);

Customization of header

You can customize the header’s text by using the TextStyle, TextColor and ArcRadius properties.

c#

SFCircularGauge circularGauge = new SFCircularGauge();
            ObservableCollection<SFCircularScale> scales = new ObservableCollection<SFCircularScale>();
            SFCircularScale scale = new SFCircularScale();
            SFGaugeHeader header = new SFGaugeHeader();
            header.Text = (Foundation.NSString)"Speedometer";
            header.TextStyle = UIFont.FromName("Chalkduster", 20f);
            header.TextColor = UIColor.Blue;
            circularGauge.Headers.Add(header);
            scale.StartValue = 0;
            scale.EndValue = 100;
            scales.Add(scale);
            circularGauge.Scales = scales;
            this.View.AddSubview(circularGauge);