Annotations are used to mark a specific area of interest in the gauge with texts, shapes or images.
You can place any custom element on the axis area by assigning the id of the element to
content property of annotation object.
Note: To use annotation feature, we need to inject Annotations module using CircularGauge.Inject(Annotations) method.
<template>
<div id="app">
<div class='wrapper'>
<ejs-circulargauge>
<e-axes>
<e-axis :annotations='annotations'>
<e-pointers>
<e-pointer value=50 ></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-circulargauge>
</div>
</div>
</template>
<script>
import Vue from "vue";
import { CircularGaugePlugin, Annotations } from "@syncfusion/ej2-vue-circulargauge";
let contentVue = Vue.component("contentTemplate", {
template: '<div><span style="font-size:10px; color:#424242; font-family:Regular">pointer Value: 50</span></div>',
data() {
return {
data: {}
};
}
});
let contentTemplate = function() {
return { template: contentVue };
};
Vue.use(CircularGaugePlugin);
export default {
data:function(){
return {
annotations:[{
content:contentTemplate,
zIndex: '1'
}]
}
},
provide: {
circulargauge: [Annotations]
}
};
</script>
<style>
.wrapper {
max-width: 300px;
margin: 0 auto;
}
</style>Annotation can be placed around the axis by using radius
and angle property.
For example, if the angle is 90 degree and the radius is 110%, then the annotation, will be placed at the right side of the axis.
Radius of the annotation takes value either in pixel or percentage. By setting value in percentage, annotation gets its position with respect to its axis radius.
<template>
<div id="app">
<div class='wrapper'>
<ejs-circulargauge>
<e-axes>
<e-axis :annotations='annotations'>
<e-pointers>
<e-pointer value=50 ></e-pointer>
</e-pointers>
</e-axis>
</e-axes>
</ejs-circulargauge>
</div>
</div>
</template>
<script>
import Vue from "vue";
import { CircularGaugePlugin, Annotations } from "@syncfusion/ej2-vue-circulargauge";
Vue.use(CircularGaugePlugin);
let contentVue = Vue.component("contentTemplate", {
template: '<div><span style="font-size:10px; color:#424242; font-family:Regular">pointer Value: 50</span></div>',
data() {
return {
data: {}
};
}
});
let contentTemplate = function() {
return { template: contentVue };
};
export default {
data:function(){
return {
annotations: [{
content: contentTemplate,
angle: 90,
radius: '150%',
zIndex: '1'
}]
}
},
provide: {
circulargauge: [Annotations]
}
};
</script>
<style>
.wrapper {
max-width: 300px;
margin: 0 auto;
}
</style>As the annotation allows you to place any custom element, we can initialize a gauge to the element and can be used to place that in another gauge.
<template>
<div id="app">
<div class='wrapper'>
<ejs-circulargauge :axes ='axes'>
</ejs-circulargauge>
</div>
</div>
</template>
<script>
import Vue from "vue";
import { CircularGaugePlugin, Annotations } from "@syncfusion/ej2-vue-circulargauge";
Vue.use(CircularGaugePlugin);
export default {
data:function(){
return {
axes: [{
minimum: 0,
maximum: 12,
startAngle: 0,
endAngle: 360,
lineStyle: { width: 0 },
ranges: [{
start: 0, end: 3,
color: 'rgba(29,29,29,0.7)'
}, {
start: 3, end: 12,
color: 'rgba(168,145,102,0.1)'
}],
annotations: [{
angle: 270,
radius: '40%',
content: '<div id="subGauge" style="width:90px;height:90px;"></div>'
},{
angle: 90,
radius: '40%',
content: '<div id="time"><span>6:30 PM</span></div>',
zIndex: '1'
}],
labelStyle: {
hiddenLabel: 'First'
},
pointers: [{
pointerWidth: 5,
radius: '40%',
value: 6.5,
color: 'rgb(29,29,29)',
border: { width: 1, color: 'rgb(29,29,29)' },
cap: {
color: 'rgb(29,29,29)',
radius: 0,
border: {
width: 0.2,
color: 'red'
}
},
needleTail: {
length: '0%'
},
animation: {
enable: false
}
},
{
radius: '60%',
pointerWidth: 5,
color: 'rgb(29,29,29)',
border: {
width: 1,
color: 'rgb(29,29,29)'
},
value: 6,
cap: {
color: 'rgb(29,29,29)',
radius: 0,
border: {
width: 0.2,
color: 'red'
}
},
needleTail: {
length: '0%'
},
animation: {
enable: false
}
},
{
radius: '70%',
pointerWidth: 4,
value: 9.8,
color: 'rgba(168,145,102,1)',
cap: {
color: 'rgba(168,145,102,1)',
radius: 4,
border: {
width: 0.2,
color: 'rgba(168,145,102,1)'
}
},
needleTail: {
color: 'rgba(168,145,102,1)',
length: '20%'
},
animation: {
enable: false,
duration: 500
}
}]
}]
}
},
provide: {
circulargauge: [Annotations]
}
};
</script>
<style>
.wrapper {
max-width: 300px;
margin: 0 auto;
}
</style>