Interaction and Animation

20 Nov 20174 minutes to read

Interaction

• Circular Gauge control contains Interaction feature. You can use this interaction feature to change the pointer values manually. You can achieve this by clicking and dragging the pointer over the Gauge and you can see the value of pointer changes dynamically while dragging.
• To Enable/Disable the user interaction you can use the Boolean property called ReadOnly. The user interaction option is enabled when you set the value as false for the property readOnly.By default it holds the true value.That is by default it does not support interaction.

HTML

<%--For Circular Gauge rendering-- %>

        <ej:CircularGauge runat="server" ReadOnly="false" ID="CircularGauge1">

        </ej:CircularGauge>

Execute the above code to render the following output.

Animations

• Circular Gauge contains an attractive concept called Animation. The animation option enables the pointer to rotate from the minimum value to the current value with animation effects. By using this animation you can change the pointer value dynamically.You can apply the animation on pointer either by clockwise or counterclockwise based on the scale direction.
• You can enable / disable it using the property EnableAnimation. Animation is enabled when you set enableAnimation as ‘true’. By default it holds the true value. You can control the speed of the pointer during animating by using the property AnimationSpeed. It is a numerical value that holds the time in milliseconds. That is when the value is given as 1000, it is considered as 1 second.

HTML

<%--For Circular Gauge rendering-- %>

        <%--For enabling animation and setting animation speed-- %>

        <ej:CircularGauge runat="server" ReadOnly="false" enableAnimation="true"  animationSpeed="1000" Id="CircularGauge1">

        </ej:CircularGauge>

Execute the above code to render the following output.

## Gradient

You can change the interior gradient of Circular Gauge by using InteriorGradient property. The IsRadialGradient property is used to check whether the gradient is circular or not.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" IsRadialGradient="true">
        <InteriorGradient>
                <ColorInfo>
                        //..
                </ColorInfo>
        </InteriorGradient>
</ej:CircularGauge>

Distance From Corner

You can display the circular gauge from distance apart from the corner by specifying value for DistanceFromCorner property.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" DistanceFromCorner="25">
</ej:CircularGauge>

Resize

Circular gauge can be responsive while resizing by specifying EnableResize property as true.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" EnableResize="true">
</ej:CircularGauge>

Localization

The circular gauge can be localized based on name of culture specified in Locale property.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" Locale="en-US">
</ej:CircularGauge>

Themes

CircularGauge Theme is a set of pre-defined options that are applied to the control before CircularGauge is instantiated. Following predefined themes are available in JavaScript CircularGauge.

1. flatlight
2. flatdark
3. gradientlight
4. gradientdark
5. azure
6. azuredark
7. lime
8. limedark
9. saffron
10. saffrondark
11. gradientazure
12. gradientazuredark
13. gradientlime
14. gradientlimedark
15. gradientsaffron
16. gradientsaffrondark

The theme for circular gauge can be specified using Theme property.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" Theme="FlatDark">
</ej:CircularGauge>

Circular Gauge Values

The Minimum, Maximum, Radius and Value attributes of circular gauge are used to render the circular gauge with specified location.

HTML

<ej:CircularGauge runat="server" ID="CircularGauge1" Maximum="120" Minimum="10" Value="30" Radius="100">
</ej:CircularGauge>