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Fabric.js | Circle cornerStrokeColor Property
  • Last Updated : 25 Jun, 2020

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

Approach: 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 circle. After this, we will initialize instances of Canvas and Circle provided by FabricJS and change the color of controlling corners of the circle using cornerStrokeColor property and render the Circle on the Canvas as given in the example below.

Syntax:

fabric.Circle({
    radius: number,
    cornerStrokeColor: string,
    transparentCorners: boolean
}); 

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

  • radius: It specifies the radius of circle.
  • cornerStrokeColor: It specifies the stroke color name of the controlling corners.
  • transparentCorners: It specifies whether we want to make transparent corners or not.

Example: This example uses FabricJS to change the color of controlling corners of a canvas circle. Note that you have to click on the object to see the corners.




<!DOCTYPE html>
<html>
  
<head>
    <title
        Fabric.js | Circle cornerStrokeColor Property
    </title>
  
    <!-- FabricJS CDN -->
    <script src=
    </script>
</head>
  
<body>
    <canvas id="canvas" width="600" height="200" 
        style="border:1px solid #000000">
    </canvas>
  
    <script>
  
        // Initiate a Canvas instance
        var canvas = new fabric.Canvas("canvas");
  
        // Initiate a Circle instance
        var circle = new fabric.Circle({
            radius: 50,
            cornerStrokeColor: 'red',
            transparentCorners: false
        });
  
        // Render the circle in canvas
        canvas.add(circle);
    </script>
</body>
  
</html>

Output:




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