Pointers in Vue Linear gauge component
16 Mar 202319 minutes to read
Pointers are used to indicate values on an axis. The value of the pointer can be modified using the value property in e-pointer.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=80></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Types of pointer
The Linear Gauge supports the following types of pointers:
- Bar
- Marker
The type of pointer can be modified by using the type property in e-pointer.
Marker pointer
A marker pointer is a shape that can be used to mark the pointer value in the Linear Gauge.
Types of marker shapes
By default, the marker shape for the pointer is InvertedTriangle. To change the shape of the pointer, use the markerType property in e-pointer. The following marker types are available in Linear Gauge.
- Circle
- Rectangle
- Triangle
- InvertedTriangle
- Diamond
- Image
An image can be rendered instead of rendering a shape as a pointer. It can be achieved by setting the markerType property to Image and setting the source URL of image to imageUrl property in e-pointer.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=80 type= 'Marker' markerType= 'Circle'></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Marker Pointer Customization
The marker pointer can be customized using the following properties.
-
height- To set the height of the pointer. -
position- The position of the pointer can be changed by setting the value as Inside, Outside, Cross, or Auto. -
width- To set the width of the pointer. -
color- To set the color of the pointer. -
placement- To place the pointer in the specified position. By default, the pointer is placed Far from the axis. To change the placement, set theplacementproperty as Near, Center, or None. -
offset- To place the pointer with specified distance from the axis. -
opacity- To set the opacity of the pointer. -
animationDuration- To specify the duration of the animation in pointer. -
border- To set the color and width for the border of the pointer.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=60 type= 'Marker' markerType= 'Circle' :height= 15 :width=15 position="Outside" color="#cd41f4"></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Bar Pointer
The bar pointer is used to track the axis value. The bar pointer starts from the beginning of the gauge and ends at the pointer value. To enable bar pointer, set the type property in e-pointer as Bar.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=60 type= 'Bar'></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Bar pointer customization
The bar pointer can be customized using the following properties.
-
width- To set the thickness of the bar pointer. -
color- To set the color of the bar pointer. -
offset- To place the bar pointer with the specified distance from it’s default position. -
opacity- To set the opacity of the bar pointer. -
roundedCornerRadius- To set the corner radius for the bar pointer. -
border- To set the color and width for the border of the pointer. -
animationDuration- To set the duration of the animation in bar pointer.
The placement property is not applicable for the bar pointer.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=80 type= 'Bar' color= '#f44141'></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Multiple pointers
Multiple pointers can be added to the Linear Gauge by adding multiple e-pointer in the e-pointers and customization for the pointers can be done with e-pointer.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge >
<e-axes>
<e-axis >
<e-pointers>
<e-pointer value=80></e-pointer>
<e-pointer value=30 markerType= 'Diamond'></e-pointer>
<e-pointer value=50 markerType= 'Circle'></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Pointer animation
Pointer is animated on loading the gauge. This can be handled using the animationDuration property. The duration of the animation can be specified in milliseconds.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge>
<e-axes>
<e-axis>
<e-pointers>
<e-pointer value=80 animationDuration= 1000></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default { };
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Gradient Color
Gradient support allows the addition of multiple colors in the pointers of the Linear Gauge. The following gradient types are supported in the Linear Gauge.
- Linear Gradient
- Radial Gradient
Linear Gradient
Using linear gradient, colors will be applied in a linear progression. The start value of the linear gradient can be set using the startValue property. The end value of the linear gradient will be set using the endValue property. The color stop values such as color, opacity, and offset are set using colorStop property.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge :orientation= 'orientation' :container= 'container'>
<e-axes>
<e-axis :ranges='ranges' :pointers= 'pointers' :line= 'line' :majorTicks= 'majorTicks' :minorTicks= 'minorTicks' :labelStyle= 'labelStyle'></e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin, Gradient } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default {
data: function () {
return {
orientation: 'Horizontal',
container: {
width: 30, offset: 30
},
line: { width: 0 },
majorTicks: { interval: 25, height: 0 },
minorTicks: { height: 0 },
labelStyle: {
font: { color: '#424242'},
offset: 55
},
pointers: [{
value: 80, height: 25,
width: 35, placement: 'Near',
offset: -44, markerType: 'Triangle',
linearGradient: {
startValue: '0%',
endValue: '100%',
colorStop: [
{ color: '#fef3f9', offset: '0%', opacity: 1 },
{ color: '#f54ea2', offset: '100%', opacity: 1 }]
}
}],
ranges: [{
start: 0, end: 80,
startWidth: 30, endWidth: 30,
color: '#f54ea2', offset: 30,
}]
}
},
provide: {
lineargauge: [Gradient]
}
};
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>Radial Gradient
Using radial gradient, colors will be applied in circular progression. The inner circle position of the radial gradient will be set using the innerPosition property. The outer circle position of the radial gradient can be set using the outerPosition property. The color stop values such as color, opacity, and offset are set using colorStop property.
<template>
<div class="content-wrapper">
<div align='center'>
<ejs-lineargauge :orientation= 'orientation' :container= 'container'>
<e-axes>
<e-axis :ranges='ranges' :pointers= 'pointers' :line= 'line' :majorTicks= 'majorTicks' :minorTicks= 'minorTicks' :labelStyle= 'labelStyle'></e-axis>
</e-axes>
</ejs-lineargauge>
</div>
</div>
</template>
<script>
import Vue from 'vue';
import { LinearGaugePlugin, Gradient } from "@syncfusion/ej2-vue-lineargauge";
Vue.use(LinearGaugePlugin);
export default {
data: function () {
return {
orientation: 'Horizontal',
container: {
width: 30, offset: 30
},
line: { width: 0 },
majorTicks: { interval: 25, height: 0 },
minorTicks: { height: 0 },
labelStyle: {
font: { color: '#424242'},
offset: 55
},
pointers: [{
value: 80, height: 25,
width: 35, placement: 'Near',
offset: -44, markerType: 'Triangle',
radialGradient: {
radius: '60%',
outerPosition: { x: '50%', y: '50%' },
innerPosition: { x: '50%', y: '50%' },
colorStop: [
{ color: '#fff5f5', offset: '0%', opacity: 0.9 },
{ color: '#f54ea2', offset: '100%', opacity: 0.8 }]
}
}],
ranges: [{
start: 0, end: 80,
startWidth: 30, endWidth: 30,
color: '#f54ea2', offset: 30,
}]
}
},
provide: {
lineargauge: [Gradient]
}
};
</script>
<style>
#content-wrapper {
padding: 0px !important;
}
</style>If we set both gradients, only the linear gradient gets rendered. If we set the
startValueandendValueof thelinearGradientas empty strings, then the radial gradient gets rendered in the pointer of the Linear Gauge.