How to set the padding of an Ellipse using FabricJS?

FabricJSJavascriptHTML5 Canvas

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

Syntax

new fabric.Ellipse({ padding : Number }: Object)

Parameters

  • options (optional) − This parameter is an Object which provides additional customizations to our ellipse. Using this parameter color, 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 ellipse object and its controlling borders.

Example 1

Default appearance when padding is not used

Let's see an example that shows how our ellipse object would appear 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 ellipse 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>How to set the padding of Ellipse using FabricJS?</h2>
      <p>Click the object and observe that there is no padding between the ellipse and its controlling borders.</p>
      <canvas id="canvas"></canvas>

      <script>
         // Initiate a canvas instance
         var canvas = new fabric.Canvas("canvas");

         // Initiate an ellipse instance
         var ellipse = new fabric.Ellipse({
            left: 115,
            top: 50,
            rx: 80,
            ry: 50,
            fill: "#ff1493",
         });

         // Adding it to the canvas
         canvas.add(ellipse);
         canvas.setWidth(document.body.scrollWidth);
         canvas.setHeight(250);
      </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 ellipse 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>How to set the padding of Ellipse using FabricJS?</h2>
      <p>Select the object and you will notice that there is a padding between the ellipse and its surrounding controlling borders. Here we have used a <b>padding</b> of 7.</p>
      <canvas id="canvas"></canvas>

      <script>
         // Initiate a canvas instance
         var canvas = new fabric.Canvas("canvas");

         // Initiate an ellipse instance
         var ellipse = new fabric.Ellipse({
            left: 115,
            top: 50,
            rx: 80,
            ry: 50,
            fill: "#ff1493",
            padding: 7,
         });

         // Adding it to the canvas
         canvas.add(ellipse);
         canvas.setWidth(document.body.scrollWidth);
         canvas.setHeight(250);
      </script>
   </body>
</html>
raja
Updated on 25-May-2022 10:52:45

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