Class LinearMarkerPointer

Represents the pointer visual element which may assist the Bar pointer in denoting values.

Inheritance
System.Object
GaugeElement
LinearPointer
LinearMarkerPointer
Inherited Members
Namespace: Syncfusion.Windows.Gauge
Assembly: Syncfusion.Gauge.WPF.dll
Syntax
public class LinearMarkerPointer : LinearPointer
Remarks

The LinearMarkerPointer and LinearBarPointer can be used hand-in-hand or independently to denote values on the Scale, it depends on one's personal preference.

Examples






 

 





using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Media;
using System.Windows.Controls;
using System.Windows.Data;
using Syncfusion.Windows.Shared;
using Syncfusion.Windows.Gauge;

namespace LinearMarkerPointerSample
{
        public partial class Window1 : Window
        {
            private LinearGauge linearGauge1;

            public Window1()
            {                
                InitializeComponent();

                linearGauge1 = new LinearGauge();
                this.linearGauge1.CenterFrameFillColor = Colors.Brown;

                LinearScale scale = new LinearScale();
                scale.Minimum = 0;
                scale.Maximum = 100;
                scale.MinorIntervalValue = 2;
                scale.MajorIntervalValue = 10;
                scale.ScaleBarSize = 20;
                scale.ScaleBarLength = 260;
                linearGauge1.Scales.Add(scale);
       
                LinearBarPointer pointer = new LinearBarPointer();
                pointer.BackgroundBrush = Brushes.Red;
                pointer.BorderBrush = new SolidColorBrush(Colors.Red);
                pointer.PointerWidth = 8;
                pointer.Value = 45;
                scale.Pointers.Add(pointer);

                LinearMarkerPointer markpointer = new LinearMarkerPointer();
                markpointer.BackgroundBrush = Brushes.Black;
                markpointer.PointerLength = 10;
                markpointer.PointerWidth = 10;
                markpointer.MarkerStyle = MarkerStyle.Triangle;
                markpointer.PointerPlacement = ScalePlacement.Outside;
                Binding bind = new Binding("Value");                
                bind.Source = pointer;
                markpointer.SetBinding(LinearMarkerPointer.ValueProperty, bind);
                scale.Pointers.Add(markpointer);

                this.Content = linearGauge1;
            }
        }
}

Constructors

LinearMarkerPointer()

Initializes a new instance of the LinearMarkerPointer class.

Declaration
public LinearMarkerPointer()

Fields

MarkerCustomGeometryProperty

Identifies the MarkerCustomGeometry dependency property.

Declaration
public static readonly DependencyProperty MarkerCustomGeometryProperty
Field Value
Type Description
System.Windows.DependencyProperty

MarkerStyleProperty

Identifies the MarkerStyle dependency property.

Declaration
public static readonly DependencyProperty MarkerStyleProperty
Field Value
Type Description
System.Windows.DependencyProperty

PointerLengthProperty

Identifies the PointerLength dependency property.

Declaration
public static readonly DependencyProperty PointerLengthProperty
Field Value
Type Description
System.Windows.DependencyProperty

PointerPlacementProperty

Identifies the PointerPlacement dependency property.

Declaration
public static readonly DependencyProperty PointerPlacementProperty
Field Value
Type Description
System.Windows.DependencyProperty

Properties

MarkerCustomGeometry

Gets or sets the custom geometry value for Marker.

Declaration
public Geometry MarkerCustomGeometry { get; set; }
Property Value
Type Description
System.Windows.Media.Geometry

Type : System.Windows.Media.Geometry Default Value is Null.

MarkerStyle

Gets or sets the different shapes for the marker pointer. This is a dependency property.

Declaration
public MarkerStyle MarkerStyle { get; set; }
Property Value
Type Description
MarkerStyle

Type: MarkerStyle Default value is MarkerStyle.Rectangle.

PointerLength

Gets or sets the length of the pointer. This is a dependency property.

Declaration
public double PointerLength { get; set; }
Property Value
Type Description
System.Double

Type: System.Double Default value is 0.
See Also

PointerPlacement

Gets or sets the placement of the marker pointer relative to the scale. This is a dependency property.

Declaration
public ScalePlacement PointerPlacement { get; set; }
Property Value
Type Description
ScalePlacement

Type: ScalePlacement Default value is ScalePlacement.Inside.

Methods

ArrangeOverride(Size)

Positions child elements and determines a size for the element.

Declaration
protected override Size ArrangeOverride(Size finalSize)
Parameters
Type Name Description
System.Windows.Size finalSize

The final area within the parent that this element should use to arrange itself and its children.
Returns
Type Description
System.Windows.Size

The actual size used.

CoercePointerLength(Object)

Fulfils the logic before setting the value of PointerLength dependency property.

Declaration
protected virtual object CoercePointerLength(object value)
Parameters
Type Name Description
System.Object value

The value that should be corrected.
Returns
Type Description
System.Object

The corrected value.

CoercePointerLength(DependencyObject, Object)

Coerces the value of the PointerLength property.

Declaration
public static object CoercePointerLength(DependencyObject d, object value)
Parameters
Type Name Description
System.Windows.DependencyObject d

The LinearMarkerPointer object.
System.Object value

The instance containing the event data.
Returns
Type Description
System.Object

The checked value.

GetValueByPosition(Double)

Gets the corresponding value for Pointer position passed.

Declaration
public double GetValueByPosition(double pos)
Parameters
Type Name Description
System.Double pos

Pointer position.
Returns
Type Description
System.Double

Value.

MeasureOverride(Size)

Measures the size in layout required for child elements and determines a size for the element.

Declaration
protected override Size MeasureOverride(Size availableSize)
Parameters
Type Name Description
System.Windows.Size availableSize

The available size that this element can give to child elements.
Returns
Type Description
System.Windows.Size

The size that this element determines it needs during layout.

OnGotFocus(RoutedEventArgs)

Invoked whenever an unhandled System.Windows.UIElement.GotFocus event reaches this element in its route.

Declaration
protected override void OnGotFocus(RoutedEventArgs e)
Parameters
Type Name Description
System.Windows.RoutedEventArgs e

The System.Windows.RoutedEventArgs that contains the event data.

OnInitialized(EventArgs)

Raises the System.Windows.FrameworkElement.Initialized event. This method is invoked whenever System.Windows.FrameworkElement.IsInitialized property is set to true internally.

Declaration
protected override void OnInitialized(EventArgs e)
Parameters
Type Name Description
System.EventArgs e

The System.EventArgs that contains the event data.

OnLostFocus(RoutedEventArgs)

Raises the System.Windows.UIElement.LostFocus routed event by using the event data that is provided.

Declaration
protected override void OnLostFocus(RoutedEventArgs e)
Parameters
Type Name Description
System.Windows.RoutedEventArgs e

A System.Windows.RoutedEventArgs that contains event data. This event data must contain the identifier for the System.Windows.UIElement.LostFocus event.

OnMarkerStyleChanged(DependencyPropertyChangedEventArgs)

Updates property value cache and raises MarkerStyleChanged event.

Declaration
protected virtual void OnMarkerStyleChanged(DependencyPropertyChangedEventArgs e)
Parameters
Type Name Description
System.Windows.DependencyPropertyChangedEventArgs e

Property change details, such as old value and new value.

OnPointerLengthChanged(DependencyPropertyChangedEventArgs)

Updates property value cache and raises PointerLengthChanged event.

Declaration
protected virtual void OnPointerLengthChanged(DependencyPropertyChangedEventArgs e)
Parameters
Type Name Description
System.Windows.DependencyPropertyChangedEventArgs e

Property change details, such as old value and new value.

OnPointerPlacementChanged(DependencyPropertyChangedEventArgs)

Updates property value cache and raises PointerPlacementChanged event.

Declaration
protected virtual void OnPointerPlacementChanged(DependencyPropertyChangedEventArgs e)
Parameters
Type Name Description
System.Windows.DependencyPropertyChangedEventArgs e

Property change details, such as old value and new value.

OnRender(DrawingContext)

Participates in rendering operations that are directed by the layout system.

Declaration
protected override void OnRender(DrawingContext drawingContext)
Parameters
Type Name Description
System.Windows.Media.DrawingContext drawingContext

The drawing instructions for a specific element.
Remarks

For Triangle-Inside placement, for Pentagon and for Trapezoid, we have to Rotate the geometry by 180 degree

RefreshPointerPosition()

Updates the position of the pointer.

Declaration
protected override void RefreshPointerPosition()
Overrides
Remarks

The pointer which is drawn in the Center by OnRender method is transformed to the appropriate location

Events

MarkerCustomGeometryChanged

Event that will raise when MarkerCustomGeometry property is changed.

Declaration
public event PropertyChangedCallback MarkerCustomGeometryChanged
Event Type
Type Description
System.Windows.PropertyChangedCallback

MarkerStyleChanged

Event that is raised when MarkerStyle property is changed.

Declaration
public event PropertyChangedCallback MarkerStyleChanged
Event Type
Type Description
System.Windows.PropertyChangedCallback

PointerLengthChanged

Event that is raised when PointerLength property is changed.

Declaration
public event PropertyChangedCallback PointerLengthChanged
Event Type
Type Description
System.Windows.PropertyChangedCallback

PointerPlacementChanged

Event that is raised when PointerPlacement property is changed.

Declaration
public event PropertyChangedCallback PointerPlacementChanged
Event Type
Type Description
System.Windows.PropertyChangedCallback

See Also