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Fabric.js | Ellipse selectionBackgroundColor Property

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In this article, we are going to see how to set the selected background color of a canvas ellipse using FabricJS. The canvas means ellipse is movable and can be stretched according to requirement. Further, the ellipse can be customized when it comes to initial stroke color, fill color, stroke width, or radius. 

To make it possible we are going to use a JavaScript library called FabricJS. After importing the library using CDN, we will create a canvas block in the body tag which will contain our ellipse. After this, we will initialize instances of Canvas and Ellipse provided by FabricJS and set the selected background color of the canvas ellipse using selectionBackgroundColor property and render the Ellipse on the Canvas as given in the example below. 

Syntax:

fabric.Ellipse({
    rx: number,
    ry: number,
    selectionBackgroundColor: number
}); 

Parameters: This function accepts three parameters as mentioned above and described below:

  • rx: It specifies the horizontal radius.
  • ry: It specifies the vertical radius.
  • selectionBackgroundColor: It specifies the selection background color.

Example: This example uses FabricJS to selection background color of a canvas ellipse. Note that you have to click on the ellipse to see the selection background. 

html




<!DOCTYPE html>
<html>
 
<head>
    <title>
       Fabric.js | Ellipse selectionBackgroundColor Property
    </title>
 
    <!-- FabricJS CDN -->
    <script src=
    </script>
</head>
 
<body>
    <div style="text-align: center;width: 600px;">
        <h1 style="color: green;">
            GeeksforGeeks
        </h1>
        <b>
            Fabric.js | Ellipse selectionBackgroundColor Property
        </b>
    </div>
 
    <div style="text-align: center;">
    <canvas id="canvas" width="600" height="200"
            style="border:1px solid #000000;">
    </canvas>
    </div>
 
    <script>
        // Initiate a Canvas instance
        var canvas = new fabric.Canvas("canvas");
 
        // Initiate a Ellipse instance
        var ellipse = new fabric.Ellipse({
            rx: 80,
            ry: 40,
            selectionBackgroundColor: 'green'
        });
 
        // Render the Ellipse in canvas
        canvas.add(ellipse);
    </script>
</body>
 
</html>                  


Output:

 



Last Updated : 22 Aug, 2022
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