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Fabric.js line lockScalingY Property
  • Last Updated : 20 Jan, 2021

In this article, we are going to see if the option set to true will lock the vertical scaling in a canvas line in FabricJS. The canvas line means the line is movable and can be stretched according to the need. Further, the line 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 line. After this, we will initialize instances of canvas and line provided by FabricJS and see if the option set to true will lock the vertical scaling in the canvas line using lockScalingY property, and render the line on the canvas as given below.

Syntax:

fabric.line({
    lockScalingY : boolean
});

Parameters: This property accepts a single parameter as mentioned above and described below.

  • lockScalingY : It specifies if the option set to true will lock the vertical scaling. It contains a boolean value.

Example 1:

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<!DOCTYPE html> 
<html
  
<head
     
   <script src
   </script
</head
  
<body
   <h1>fabric.js | line lockScalingY property</h1>
   <canvas id="canvas" width="600" height="200"
      style="border:1px solid #000000;"
   </canvas
     
   <script>       
   
      var canvas = new fabric.Canvas("canvas"); 
   
      var line = new fabric.Line([150, 10, 220, 150], { 
         stroke: 'green',
         lockScalingY : true
  
      }); 
   
      canvas.add(line); 
  
   </script
</body
  
</html

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Output:



Example 2:

HTML

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<!DOCTYPE html> 
<html
  
<head
     
   <script src
   </script
</head
  
<body
   <h1>fabric.js | line lockScalingY property</h1>
   <canvas id="canvas" width="600" height="200"
      style="border:1px solid #000000;"
   </canvas
     
   <script>       
   
      var canvas = new fabric.Canvas("canvas"); 
   
      var line = new fabric.Line([150, 10, 220, 150], { 
         stroke: 'green',
         lockScalingY  : false
      }); 
   
      canvas.add(line); 
  
   </script
</body
  
</html

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Output:

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