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How to get the source code of an image using FabricJS?

王林
王林forward
2023-08-22 12:17:021324browse

How to get the source code of an image using FabricJS?

In this tutorial, we are going to learn how to get the source of Image using FabricJS. We can create an Image object by creating an instance of fabric.Image. Since it is one of the basic elements of FabricJS, we can also easily customize it by applying properties like angle, opacity etc. In order to find the source of an Image, we use the getSrc method.

Syntax

getSrc(filtered: Boolean): String

Parameters

  • filtered − This parameter is a Boolean value which indicates whether the source is needed for svg or not.

Using the getSrc method

Example

In this example, we have used the getSrc method to obtain the original source of the image. It can be seen in the console that a String representation of the source of the image is returned.

<!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>Using the getSrc method</h2>
   <p>
      You can open the console from dev tools to see that the logged output contains the image source
   </p> 
   <canvas id="canvas"></canvas>
   <img  src="https://www.tutorialspoint.com/images/logo.png" id="img1"   style="max-width:90%" / alt="How to get the source code of an image using FabricJS?" >
   <script>
      // Initiate a canvas instance
      var canvas = new fabric.Canvas("canvas");
      canvas.setWidth(document.body.scrollWidth);
      canvas.setHeight(250);
      
      // Initiating the image element
      var imageElement = document.getElementById("img1");
      
      // Initiate an Image object
      var image = new fabric.Image(imageElement, {
         top: 50,
         left: 110,
         skewX: 15,
      });
      
      // Add it to the canvas
      canvas.add(image);
      
      // Using the getSrc method
      console.log("The Source of the image is: ", image.getSrc(false));
   </script>
</body>
</html>

Using the getSrc method along with fromURL method

Example

Let’s see a code example of the logged output when the getSrc method is used in conjunction with the fromURL method.

<!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>Using the getSrc method along with fromURL method</h2>
   <p>
      You can open the console from dev tools to see that the logged output contains the image source
   </p>
   <canvas id="canvas"></canvas>
   <script>
      // Initiate a canvas instance
      var canvas = new fabric.Canvas("canvas");
      canvas.setWidth(document.body.scrollWidth);
      canvas.setHeight(250);
      
      // Using fromURL method
      fabric.Image.fromURL(
         "https://www.tutorialspoint.com/images/logo.png",
         function (Img) {
            canvas.add(Img);
            
            // Using getSrc method
            console.log("The Source of the image is: ", Img.getSrc(false));
         }
      );
   </script>
</body>
</html>

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String Boolean Object for using console this fabric
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