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Fabric.js ActiveSelection strokeDashArray Property

  • Last Updated : 01 Aug, 2021

Fabric.js is a JavaScript library that is used to work with canvas. The canvas ActiveSelection is one of the classes 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 the strokeDashArray property to set the dash pattern of the stroke in 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 strokeDashArray property to set the dash pattern of the stroke in the canvas ActiveSelection.

Syntax:

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

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

  • strokeDashArray: This parameter takes an array value.

 



Example: This example uses FabricJS to set the strokeDashArray property of the canvas ActiveSelection as shown in the below example.

HTML




<!DOCTYPE html> 
<html
  
<head>
   <!-- FabricJS CDN -->
   <script src
   </script
</head
  
<body
   <div style="text-align: center;width: 400px;"
      <h1 style="color: green;"
         GeeksforGeeks 
      </h1>
      <b
         Fabric.js | ActiveSelection strokeDashArray Property 
      </b
  
   </div
  
   <div style="text-align:center;"
      <canvas id="canvas" width="500" height="500"
            style="border:1px solid green;"
      </canvas
   </div
   <img src
        width="100" height="100" id="my-image"
        style="display:none;">
   <script
      var canvas = new fabric.Canvas("canvas"); 
    
        // Initiate a Rect instance  
        var rectangle = new fabric.Rect({  
            width: 200,  
            height: 100,
            strokeDashArray :[4],
            stroke: 'red',
            strokeWidth:3
        });  
      canvas.add(rectangle); 
  
      var itext = new fabric.IText('GeeksforGeeks', {
              stroke: 'red',
             strokeWidth:3,
             strokeDashArray :[4],
      });
      canvas.add(itext);
      canvas.centerObject(itext); 
  
         var select = new fabric
           .ActiveSelection(canvas.getObjects(), {
             stroke: 'red',
             strokeDashArray :[4],
             strokeWidth:9
         })
         canvas.setActiveObject(select);
         canvas.requestRenderAll();
         canvas.centerObject(select); 
   </script
</body
</html>

Output:

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