How to change the colour of cursor in IText using FabricJS?


In this tutorial, we are going to learn about how to change the colour of cursor in 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. Likewise, we can change the colour of cursor by using the cursorColor property.

Syntax

new fabric.IText( text: String, { cursorColor: String }: Object)

Parameters

  • text − This parameter accepts a String which is the text string that we want to display as our text.

  • 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 cursorColor is a property.

Options Keys

  • cursorColor − This property accepts a String value which determines the colour of the cursor. If the value is not set, then the colour of the cursor will be the same as the colour of the text.

Example 1

Default appearance of IText object

Let’s see a code example to see the default appearance of IText object when the cursorColor property is not used. As we have not specified anything, the cursor color will be the same as the colour of the text, which is red.

<!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 IText object</h2> <p> You can click on the IText object to see that the cursor colour is the same as the text colour</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: 50, top: 70, fill: "red", }); // Add it to the canvas canvas.add(itext); </script> </body> </html>

Example 2

Passing the cursorColor property as key with a custom value

In this example, we have passed the cursorColor property as key with the value as blue. This will change the cursor colour to blue.

<!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 the cursorColor property as key with a custom value</h2> <p> You can click on the IText object to see that the cursor colour is blue</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: "red", cursorColor: "blue", }); // Add it to the canvas canvas.add(itext); </script> </body> </html>

Updated on: 12-Sep-2022

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