LinearScaleLayer Class

A layer that contains properties to define the visual presentation of a linear scale.

Assembly : DevExpress.Xpf.Gauges.v25.2.dll

NuGet Package : DevExpress.Wpf.Gauges

Declaration

C#
VB.NET

csharp

public class LinearScaleLayer :
    ScaleLayerBase

Public Class LinearScaleLayer
    Inherits ScaleLayerBase

Remarks

A layer specifies the appearance of the linear scale’s elements. It is represented by LinearScaleLayer object contained in the LinearScaleLayerCollection object, which can be accessed via the LinearScale.Layers property.

When a new layer is added to the linear scale, it is painted behind all other elements, because by default, its LayerOptions.ZIndex is less than other elements. If you want to display the layers in front of other scale elements, set their Zindex to a greater value.

The following image illustrates this layer’s appearance.

Example

This example illustrates how to create a LinearGaugeControl instance with two LinearScale objects.

View Example

MainWindow.xaml

xaml

<Window x:Class="DXGauges_Linear.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxga="http://schemas.devexpress.com/winfx/2008/xaml/gauges"
        Title="MainWindow" Height="450" Width="525">
    <Grid>
        <dxga:LinearGaugeControl Name="linearGaugeControl1" Margin="0,24,0,20">
            <dxga:LinearGaugeControl.Model>
                <dxga:LinearRedThermometerModel/>
            </dxga:LinearGaugeControl.Model>
            <dxga:LinearGaugeControl.Scales>
                <dxga:LinearScale StartValue="-40" EndValue="120" 
                                  MajorIntervalCount="8" Width="60">
                    <dxga:LinearScale.Ranges>
                        <dxga:LinearScaleRange EndValue="32" StartValue="-40">
                            <dxga:LinearScaleRange.Presentation>
                                <dxga:DefaultLinearScaleRangePresentation Fill="LightBlue" />
                            </dxga:LinearScaleRange.Presentation>
                        </dxga:LinearScaleRange>
                        <dxga:LinearScaleRange EndValue="120" StartValue="32">
                            <dxga:LinearScaleRange.Presentation>
                                <dxga:DefaultLinearScaleRangePresentation Fill="Tomato" />
                            </dxga:LinearScaleRange.Presentation>
                        </dxga:LinearScaleRange>
                    </dxga:LinearScale.Ranges>
                    <dxga:LinearScale.CustomLabels>
                        <dxga:ScaleCustomLabel Content="°F" Offset="-45" Value="-45" />
                    </dxga:LinearScale.CustomLabels>
                    <dxga:LinearScale.Layers>
                        <dxga:LinearScaleLayer/>
                    </dxga:LinearScale.Layers>
                    <dxga:LinearScale.LevelBars>
                        <dxga:LinearScaleLevelBar Value="59" />
                    </dxga:LinearScale.LevelBars>
                </dxga:LinearScale>
                <dxga:LinearScale StartValue="-40" EndValue="120" 
                                  MajorIntervalCount="8" Margin="68,0,0,0" >
                    <dxga:LinearScale.Ranges>
                        <dxga:LinearScaleRange StartValue="-40" EndValue="32" >
                            <dxga:LinearScaleRange.Presentation>
                                <dxga:DefaultLinearScaleRangePresentation Fill="LightBlue" />
                            </dxga:LinearScaleRange.Presentation>
                        </dxga:LinearScaleRange>
                        <dxga:LinearScaleRange StartValue="32" EndValue="120" >
                            <dxga:LinearScaleRange.Presentation>
                                <dxga:DefaultLinearScaleRangePresentation Fill="Tomato" />
                            </dxga:LinearScaleRange.Presentation>
                        </dxga:LinearScaleRange>
                    </dxga:LinearScale.Ranges>
                    <dxga:LinearScale.Markers>
                        <dxga:LinearScaleMarker Value="68" />
                    </dxga:LinearScale.Markers>
                    <dxga:LinearScale.CustomLabels>
                        <dxga:ScaleCustomLabel Content="°F" Offset="-7" Value="-45" />
                    </dxga:LinearScale.CustomLabels>
                    <dxga:LinearScale.LabelOptions>
                        <dxga:LinearScaleLabelOptions Offset="3" />
                    </dxga:LinearScale.LabelOptions>
                    <dxga:LinearScale.MinorTickmarkOptions>
                        <dxga:MinorTickmarkOptions Offset="-16" />
                    </dxga:LinearScale.MinorTickmarkOptions>
                </dxga:LinearScale>
            </dxga:LinearGaugeControl.Scales>
        </dxga:LinearGaugeControl>
    </Grid>
</Window>

Inheritance

Object DispatcherObject DependencyObject Freezable GaugeDependencyObject LayerBase ScaleLayerBase LinearScaleLayer