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Fabric.js | Rect cornerColor Property
  • Last Updated : 15 May, 2020

In this article, we are going to see how to set the color of controlling corners of the canvas rectangle using FabricJS. The canvas rectangle means rectangle is movable and can be stretched according to requirement. Further, the rectangle can be customized when it comes to initial stroke color, height, width, fill color, or stroke width.

To make this possible we are going to use a JavaScript library called FabricJS. After importing the library, we will create a canvas block in the body tag which will contain the rectangle. After this, we will initialize instances of Canvas and Rectangle provided by FabricJS and set the color of controlling corners of canvas rectangle using cornerColor property and render the Rectangle on the Canvas as given in the below example.

Syntax:

fabric.Rect({
    width: number,
    height: number,
    cornerColor: string
});

Parameters: This function accept three parameters as mentioned above and described below:

  • width: This parameter defines the width of rectangle.
  • height: This parameter defines the height of rectangle.
  • cornerColor: This parameter defines the color of the controlling corners.

Example: This example uses FabricJS to set the color of controlling corners of the canvas-like rectangle as given below. You have to click on the object to see the color of controlling corners.

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<!DOCTYPE html> 
<html
  
<head
    <title
        Fabric.js | Rect cornerColor Property
    </title
      
    <!-- Adding the FabricJS library -->
    <script src
    </script
</head
  
<body
    <div style="text-align: center;width: 600px;">
          <h1 style="color: green;">
              GeeksforGeeks
          </h1>
          <b>
            Fabric.js | Rect cornerColor Property
          </b>
    </div>
    <canvas id="canvas" width="600" height="200"
        style="border:1px solid #000000"
    </canvas
      
    <script
      
        // Initiate a Canvas instance 
        var canvas = new fabric.Canvas("canvas"); 
  
        // Initiate a Rect instance 
        var rectangle = new fabric.Rect({ 
            width: 200,
            height: 100,
            fill: '', 
            stroke: 'green',
            strokeWidth: 3,
            cornerColor: 'blue'
        }); 
  
        // Render the Rect in canvas 
        canvas.add(rectangle); 
        canvas.centerObject(rectangle);
    </script
</body
  
</html>

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Output:

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