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How to add space between characters in IText using FabricJS?
In this tutorial, we are going to learn about how to add space between characters in an IText object using FabricJS. The IText class was introduced in FabricJS version 1.4, extends fabric.Text and is used to create IText instances. An IText instance gives us the freedom to select, cut, paste or add new text without additional configurations. There are also various supported key combinations and mouse/touch combinations which make text interactive which are not provided in Text.
Textbox, however, which is based on IText allows us to resize the text rectangle and wraps lines automatically. This is not true for IText as height is not adjusted based on the wrapping of lines. We can manipulate our IText object by using various properties. Similarly, we can also add extra space between each character by using the charSpacing property.
Syntax
new fabric.IText(text: String , { charSpacing: Number }: Object)
Parameters
text ? This parameter accepts a String which is the text string that we want to display.
options (optional) ? This parameter is an Object which provides additional customizations to our IText object. Using this parameter colour, cursor, stroke width and a lot of other properties can be changed related to the IText object of which charSpacing is a property.
Options Keys
charSpacing ? This property accepts a Number that allows us to control the additional space between characters. It is expressed in thousands of em unit.
Example 1: Default appearance of IText object
Let's see a code example to see the default appearance of IText object when charSpacing property is not used.
<!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 of a IText object</h2>
<p>You can see the default appearance of IText object when charSpacing property is not used </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 an itext object
var itext = new fabric.IText(
"Add Sample Text Here.",{
width: 300,
left: 60,
top: 70,
fill: "green",
fontStyle: "bold",
}
);
// Add it to the canvas
canvas.add(itext);
</script>
</body>
</html>
Example 2: Passing charSpacing property as key
In this example, we will see how assigning a value to the charSpacing property adds extra space between the characters. In this case we have passed the value 100 and hence the space will be increased accordingly.
<!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 charSpacing property as key</h2>
<p>You can see the space between each character has increased</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 an itext object
var itext = new fabric.IText("Add Sample Text Here.", {
width: 300,
left: 110,
top: 70,
fill: "green",
fontStyle: "bold",
charSpacing: 100,
});
// Add it to the canvas
canvas.add(itext);
</script>
</body>
</html>
Key Points
The
charSpacingproperty controls the space between individual characters in the text.The value is expressed in thousands of em units, where higher values create more spacing.
Character spacing affects the overall width of the text object on the canvas.
This property works independently of other text formatting properties like font size and style.
Conclusion
The charSpacing property in FabricJS IText provides precise control over character spacing. By adjusting this value, you can create visually appealing text effects and improve readability based on your design requirements.
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