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Fabric.js Image lockMovementY Property

  • Last Updated : 31 Aug, 2020

Fabric.js is a JavaScript library that is used to work with canvas. The canvas image is one of the class of fabric.js that is used to create image instances. The canvas image means the Image is movable and can be stretched according to requirement. The lockMovementY property of the image is used to enable or disable the movement of the image along the y-axis of the canvas.

Approach: First import the fabric.js library. After importing the library, create a canvas block in the body tag which will contain the image. After this, initialize an instance of Canvas and image class provided by Fabric.JS and then use the lockMovementY property to enable or disable the movement of the image along the y-axis of the canvas. After this render the image on the canvas and try to move the image vertically.

Syntax:

fabric.Image(image, {
     lockMovementY : Boolean
});

Parameters: The above function takes two parameters as mentioned above and described below:

  • image: This parameter takes the image element.
  • lockMovementY: This parameter takes a boolean value to enable or disable the movement of the canvas image along the y-axis.

Example: This example uses FabricJS to enable or disable the movement of the image along the y-axis of the canvas image as shown in the below given example.

HTML




<!DOCTYPE html> 
<html
   
<head>      
    <!-- Adding the FabricJS library -->
    <script src
    </script
</head
  
<body
    <h1 style="color: green;">
        GeeksforGeeks
    </h1
    <b
        Fabric.js | Image lockMovementY Property  
    </b
  
    <canvas id="canvas" width="400" height="300"
        style="border:2px solid #000000"
    </canvas
  
    <img src =
        width="100" height="100" id="my-image"
        style="display: none;">
    <br>
  
    <script>
        // Creating the instance of canvas object
        var canvas = new fabric.Canvas("canvas"); 
  
        // Getting the image
        var img= document.getElementById('my-image');
  
        // Creating the image instance 
        var imgInstance = new fabric.Image(img, {
        });
  
        function lockMovementY(){
            imgInstance = new fabric.Image(img, {
                lockMovementY:true
            });
            canvas.clear();
            // Rendering the image to canvas
            canvas.add(imgInstance);
        }
        lockMovementY();
    </script
</body>
  
</html>

Output:




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