Fabric.js ActiveSelection borderDashArray Property

Last Updated : 31 Jul, 2021

Fabric.js is a JavaScript library that is used to work with canvas. The canvas ActiveSelection is one of the class of Fabric.js that is used to create ActiveSelection instances. The canvas ActiveSelection means the ActiveSelection is movable and can be stretched according to requirement.In this article we will be using borderDashArray property to set the dash pattern of the canvas ActiveSelection.

Approach: First import the Fabric.js library. After importing the library, create a canvas block in the body tag which will contain the ActiveSelection. After this, initialize an instance of Canvas and ActiveSelection class provided by Fabric.js and use the borderDashArray property to set the dash pattern.

Syntax:

fabric.ActiveSelection(ActiveSelection, {
  borderDashArray: array
});

Parameters: This function takes a single parameter as mentioned above and described below:

borderDashArray: This parameter takes a array value.

Example: This example uses Fabric.js to set the borderDashArray property of the canvas ActiveSelection.

HTML

<!DOCTYPE html> 
<html> 
  
<head> 
    <!-- FabricJS CDN -->
    <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: 400px;"> 
        <h1 style="color: green;"> 
            GeeksforGeeks 
        </h1> 
  
        <b> 
            Fabric.js | ActiveSelection borderDashArray Property 
        </b> 
    </div> 
  
    <div style="text-align: center;"> 
        <canvas id="canvas" width="500" height="500"
            style="border:1px solid green;"> 
        </canvas> 
    </div> 
  
    <img src= 
"https://media.geeksforgeeks.org/wp-content/uploads/20200327230544/g4gicon.png"
        width="100" height="100"
        id="my-image" style="display: none;"> 
          
    <script> 
        var canvas = new fabric.Canvas("canvas"); 
  
        // Getting the image  
        var img = document.getElementById('my-image'); 
  
        // Creating the image instance  
        var geek = new fabric.Image(img, { 
        }); 
  
        canvas.add(geek); 
  
        var geek = new fabric.IText('GeeksforGeeks', { 
        }); 
        canvas.add(geek); 
        canvas.centerObject(geek); 
  
        var gfg = new fabric.ActiveSelection( 
            canvas.getObjects(), { 
            borderDashArray: [5] 
        }); 
        canvas.setActiveObject(gfg); 
        canvas.requestRenderAll(); 
        canvas.centerObject(gfg); 
    </script> 
</body> 
  
</html> 