Fabric.js | Rect cornerDashArray Property

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

To make this possible we are going to use a JavaScript library called FabricJS. After importing the library, we will create a canvas block in the body tag which will contain the rectangle. After this, we will initialize instances of Canvas and Rectangle provided by FabricJS and set a dash pattern of controlling corners of canvas rectangle using cornerDashArray property and render the Rectangle on the Canvas as given in the below example.

Syntax:

fabric.Rect({
    width: number,
    height: number,
    cornerDashArray: array
});

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

width: It specifies the width of rectangle.
height: It specifies the height of rectangle.
cornerDashArray: This parameter defines the dash pattern of the controlling corners.

Example: This example uses FabricJS to set a dashed pattern of controlling corners of the canvas-like rectangle as given below. You have to click on the object to see the dash pattern of controlling corners.

<!DOCTYPE html>  

<html>  

<head>  

    <title>  

        Fabric.js | Rect cornerDashArray Property 

    </title>  

    <!-- Adding the FabricJS library -->

    <script src=  

"https://cdnjs.cloudflare.com/ajax/libs/fabric.js/3.6.2/fabric.min.js">  

    </script>  

</head>  

<body>  

        <div style="text-align: center;width: 600px;"> 

          <h1 style="color: green;"> 

              GeeksforGeeks 

          </h1> 

          <b> 

            Fabric.js | Rect cornerDashArray Property 

          </b> 

        </div> 

    <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 Rect instance  

        var rectangle = new fabric.Rect({  

            width: 200, 

            height: 100, 

            fill: '',  

            stroke: 'green', 

            strokeWidth: 3, 

            cornerColor: 'blue', 

            cornerDashArray: [5] 

        });  

        // Render the Rect in canvas  

        canvas.add(rectangle);  

        canvas.centerObject(rectangle); 

    </script>  

</body>  

</html>

Output:

Article Tags :

JavaScript

Web Technologies

Fabric.js