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How to hide the controlling borders of a Circle using FabricJS?
In this tutorial, we are going to learn how to hide the controlling borders of a Circle using FabricJS. Circle is one of the various shapes provided by FabricJS. In order to create a circle, we will create an instance of fabric.Circle class and add it to the canvas. We can customize our controlling borders in many ways such as adding a specific colour to it, a dash pattern etc. However, we can also eliminate the borders completely by using the hasBorders property.
Syntax
new fabric.Circle({ hasBorders: Boolean }: Object)
Parameters
options (optional) − This parameter is an Object which provides additional customizations to our circle. 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 hasBorders is a property.
Options Keys
hasBorders − This property accepts a Boolean value which when set to False, the controlling borders will not be rendered. The default value is True.
Example 1
Default appearance of controlling borders of a Circle object
Let's see a code that shows the default appearance of controlling borders of a Circle. Since the default value of hasBorders property is True, the borders are rendered on selecting the circle object.
<!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>Hiding the controlling borders of a circle using FabricJS</h2> <p>Select the object and notice its controlling borders. This is the default appearance. Although we have not used the <b>hasBorders</b> property, it is by default set to True.</p> <canvas id="canvas"></canvas> <script> // Initiate a canvas instance var canvas = new fabric.Canvas("canvas"); var circle = new fabric.Circle({ left: 215, top: 100, fill: "white", radius: 50, stroke: "#c154c1", strokeWidth: 5 }); // Adding it to the canvas canvas.add(circle); canvas.setWidth(document.body.scrollWidth); canvas.setHeight(250); </script> </body> </html>
Example 2
Passing hasBorders as key and assigning a "false" value to it
If the hasBorders property is assigned a False value, the borders will no longer be rendered. This means that when we select our circle object, the controlling borders will be hidden.
<!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>Hiding the controlling borders of a circle using FabricJS</h2> <p>Select the object and now you will no longer be able to see its controlling borders, as we have set <b>hasBorders</b> as False.</p> <canvas id="canvas"></canvas> <script> // Initiate a canvas instance var canvas = new fabric.Canvas("canvas"); var circle = new fabric.Circle({ left: 215, top: 100, fill: "white", radius: 50, stroke: "#c154c1", strokeWidth: 5, hasBorders: false }); // Adding it to the canvas canvas.add(circle); canvas.setWidth(document.body.scrollWidth); canvas.setHeight(250); </script> </body> </html>