JavaScript/jQuery BarGauge - legend

Default Value: undefined

This property supports the following colors:

Hexadecimal colors
RGB colors
RGBA colors
Predefined/cross-browser color names
Predefined SVG colors
Paint server address

border

Configures the legend's border.

Type:

columnCount

Arranges legend items into several columns.

Type:

Default Value: 0

Use this property when the legend is oriented vertically. Otherwise, use rowCount.

columnItemSpacing

Specifies an empty space between item columns in pixels.

Type:

Default Value: 20

customizeHint

Specifies the hint that appears when a user hovers the mouse pointer over a legend item.

Type:

Function

Function parameters:

arg:

Information on the bar and its corresponding legend item.

Object structure:

Name	Type	Description
item	BarGaugeBarInfo	Information on the bar.
text	String	The legend item's text.

Name

Type

Description

item

BarGaugeBarInfo

Information on the bar.

text

The legend item's text.

Return Value:

Array<BarGaugeLegendItem>

The text to be displayed in the hint.

This property accepts a function that must return the required text. When implementing this function, use its parameter to access the information on the bar that corresponds to the legend item.

customizeItems

Allows you to change the order, text, and visibility of legend items.

Type:

Function

Function parameters:

items:

Legend items before customizations.

Return Value:

Array<BarGaugeLegendItem>

Legend items after customizations.

The following code shows how to use the customizeItems function to sort legend items alphabetically:

jQuery

JavaScript

$(function() {
    $("#barGaugeContainer").dxBarGauge({
        // ...
        legend: {
            customizeItems: function(items) {
                return items.sort(function(a, b) {
                    var itemA = a.text.toLowerCase();
                    var itemB = b.text.toLowerCase();
                    if(itemA < itemB) return -1;
                    if(itemA > itemB) return 1;
                    return 0;
                });
            }
        }
    });
});

Angular

app.component.html

app.component.ts

app.module.ts

<dx-bar-gauge ... >
    <dxo-legend ...
        [customizeItems]="sortLegendItems">
    </dxo-legend>
</dx-bar-gauge>

// ...
export class AppComponent {
    sortLegendItems(items) {
        return items.sort((a, b) => {
            let itemA = a.text.toLowerCase();
            let itemB = b.text.toLowerCase();
            if(itemA < itemB) return -1;
            if(itemA > itemB) return 1;
            return 0;
        });
    }
}

import { DxBarGaugeModule } from 'devextreme-angular';
// ...
@NgModule({
    imports: [
        // ...
        DxBarGaugeModule
    ],
    // ...
})
export class AppModule { }

Vue

App.vue

<template> 
    <DxBarGauge ... >
        <DxLegend
            :customize-items="sortLegendItems"
        />
    </DxBarGauge>
</template>

<script>
import { DxBarGauge, DxLegend } from 'devextreme-vue/bar-gauge';

export default {
    components: {
        DxBarGauge,
        DxLegend
    },
    methods: {
        sortLegendItems(items) {
            return items.sort((a, b) => {
                let itemA = a.text.toLowerCase();
                let itemB = b.text.toLowerCase();
                if(itemA < itemB) return -1;
                if(itemA > itemB) return 1;
                return 0;
            });
        }
    }
}
</script>

React

App.js

import React from 'react';
import { BarGauge, Legend } from 'devextreme-react/bar-gauge';

class App extends React.Component {
    render() {
        return (
            <BarGauge ... >
                <Legend ...
                    customizeItems={this.sortLegendItems}
                />
            </BarGauge>
        );
    }

    sortLegendItems(items) {
        return items.sort((a, b) => {
            let itemA = a.text.toLowerCase();
            let itemB = b.text.toLowerCase();
            if(itemA < itemB) return -1;
            if(itemA > itemB) return 1;
            return 0;
        });
    }
}

export default App;

ASP.NET MVC Controls

Razor C#

@(Html.DevExtreme().BarGauge()
    @* ... *@
    .Legend(l => l
        .CustomizeItems("sortLegendItems")
    )
)

<script type="text/javascript">
    function sortLegendItems (items) {
        return items.sort(function(a, b) {
            var itemA = a.text.toLowerCase();
            var itemB = b.text.toLowerCase();
            if(itemA < itemB) return -1;
            if(itemA > itemB) return 1;
            return 0;
        });
    }
</script>

customizeText

Customizes the text displayed by legend items.

Type:

Function

Function parameters:

arg:

Information on the bar and its corresponding legend item.

Object structure:

Name	Type	Description
item	BarGaugeBarInfo	Information on the bar.
text	String	The legend item's text.

Name

Type

Description

item

BarGaugeBarInfo

Information on the bar.

text

The legend item's text.

Return Value:

The text to be displayed in the hint.

Cannot be used in themes.

NOTE

As an alternative to the function’s parameter you can use the this keyword.

font

Specifies the legend items' font properties.

Type:

horizontalAlignment

Along with verticalAlignment, specifies the legend's position.

Type:

Default Value: 'right'

Accepted Values: 'center' | 'left' | 'right'

itemsAlignment

Aligns items in the last column or row (depending on the legend's orientation). Applies when legend items are not divided into columns or rows equally.

Type:

Default Value: undefined

Accepted Values: 'center' | 'left' | 'right'

itemTextFormat

Formats the item text before it is displayed. Accepts only numeric formats. When unspecified, it inherits the label's format.

Type:

Format

Default Value: undefined

See the format section for more information on the accepted values.

itemTextPosition

Specifies the text's position relative to the marker in a legend item.

Type:

Default Value: undefined

Accepted Values: 'bottom' | 'left' | 'right' | 'top'

margin

Generates an empty space, measured in pixels, around the legend.

Type:

Default Value: 10

When set to a number, this property applies to all the legend's sides. The object allows you to control each side individually.

DevExtreme Legend Margins

markerSize

Specifies the marker's size in a legend item in pixels.

Type:

Default Value: 20

markerTemplate

Specifies an SVG element that serves as a custom legend item marker.

Type:

template

Template Data:

BarGaugeLegendItem

Information about a legend item.

Default Name: undefined

View Demo

NOTE

To export custom SVG content rendered by this template, parse the content in the svgToCanvas function. Refer to the Export Custom Markup demo for an example.

orientation

Arranges legend items vertically (in a column) or horizontally (in a row). The default value is "horizontal" if the legend.horizontalAlignment is "center". Otherwise, it is "vertical".

Type:

Default Value: undefined

Accepted Values: 'horizontal' | 'vertical'

paddingLeftRight

Generates an empty space, measured in pixels, between the legend's left/right border and its items.

Type:

Default Value: 10

DevExtreme Legend Left-Right Padding

paddingTopBottom

Generates an empty space, measured in pixels, between the legend's top/bottom border and its items.

Type:

Default Value: 10

DevExtreme Legend Top-Bottom Padding

rowCount

Arranges legend items in several rows.

Type:

Default Value: 0

Use this property when the legend is oriented horizontally. Otherwise, use columnCount.

rowItemSpacing

Specifies an empty space between item rows in pixels.

Type:

Default Value: 8

title

Configures the legend title.

Type:

DevExtreme PieChart: Legend Title

To specify only the title's text, assign it directly to this property. Otherwise, set this property to an object with the text and other fields specified.

The title can be accompanied by a subtitle. Assign it to the title.subtitle property.

verticalAlignment

Along with horizontalAlignment, specifies the legend's position.

Type: