How to set the padding of Textbox using FabricJS?

In this tutorial, we are going to learn how to set the padding of a Textbox using FabricJS. Textbox is one of the various shapes provided by FabricJS. In order to create a textbox, we will have to create an instance of fabric.Textbox class and add it to the canvas. Just as we can specify the position, colour, opacity and dimension of a textbox object in the canvas, we can also set the padding of a textbox object. This can be done by using the padding property.

Syntax

new fabric.Textbox(text: String, { padding : Number }: Object)

Parameters

text − This parameter accepts a String which is the text string that we want to display inside our textbox.
options (optional) − This parameter is an Object which provides additional customizations to our textbox. Using this parameter, properties such as colour, cursor, stroke width and a lot of other properties can be changed related to the object of which padding is a property.

Options Keys

padding − This property accepts a Number value. The value that is assigned, determines the distance between the textbox object and its controlling borders.

Example 1

Default appearance when padding is not used

Let’s see a code example that displays the appearance of our textbox object when the padding property is not used. As we can see, there is no space between the object and its surrounding controlling borders. This means that there is zero padding between the textbox and its controlling borders.


<!DOCTYPE html>
<html>
<head>
	<!-- Adding the Fabric JS Library-->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
<body>
	<h2>Default appearance when padding is not used</h2>
	<p>You can select the textbox to see there is no space between the object and its controlling borders</p>
	<canvas id="canvas"></canvas>
	<script>
		// Initiate a canvas instance
		var canvas = new fabric.Canvas("canvas");
		canvas.setWidth(document.body.scrollWidth);
		canvas.setHeight(250);
		
		// Initiate a textbox object
		var textbox = new fabric.Textbox("Keep a smile on your face. Keep a spring in your step.", {
			left: 110,
			top: 45,
			fill: "orange",
			stroke: "green",
			width: 400,
		});
		
		// Add it to the canvas
		canvas.add(textbox);
</script>
</body>
</html>

Example 2

Passing padding property as key

In this example, we are passing the padding property as key with a value 7. This indicates that there will be a 7px distance between the textbox object and all of its controlling borders.


<!DOCTYPE html>
<html>
<head>
	<!-- Adding the Fabric JS Library-->
	<script src="https://cdnjs.cloudflare.com/ajax/libs/fabric.js/510/fabric.min.js"></script>
</head>
<body>
	<h2>Passing padding property as key</h2>
	<p>You can select the textbox to see the padding between the object and its
	controlling borders</p>
	<canvas id="canvas"></canvas>
	<script>

		// Initiate a canvas instance
		var canvas = new fabric.Canvas("canvas");
		canvas.setWidth(document.body.scrollWidth);
		canvas.setHeight(250);
		// Initiate a textbox object
		var textbox = new fabric.Textbox("Keep a smile on your face. Keep a spring in your step.", {
			left: 110,
			top: 45,
			fill: "orange",
			stroke: "green",
			width: 400,
			padding: 7,
			backgroundColor: "#f5f5dc",
		});
		
		// Add it to the canvas
		canvas.add(textbox);
	</script>
</body>
</html>