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How to move an object to the top of the stack of drawn objects in IText using FabricJS?

In this tutorial, we are going to learn about how to move an object to the top of the stack of drawn objects in IText 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 move an object to the top of the stack of drawn objects by using the bringToFront method.

Syntax

bringToFront(): fabric.Object

Example 1

Without using the bringToFront method

Let’s see a code example to see how the IText objects behave when the bringToFront method is not used. In this case, we have initialized two IText objects namely itext1 and itext2. You can notice that the second text is covering the first text, hiding it behind.

<!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>Without using the bringToFront method</h2>
   <p> You can see that the first itext object is hidden behind the second itext object </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 itext1 = new fabric.IText("First itext object.", {
         width: 300,
         left: 110,
         top: 70,
         fill: "#b666d2",
         fontStyle: "bold",
         backgroundColor: "#f8f4ff",
      });

      // Initiate another itext object
      var itext2 = new fabric.IText("Second itext object.", {
         width: 300,
         left: 130,
         top: 90,
         fill: "white",
         backgroundColor: "#c8a2c8",
      });

      // Add it to the canvas
      canvas.add(itext1);
      canvas.add(itext2);
   </script>
</body>
</html>

Example 2

Using the bringToFront method

Let’s see a code example to see how the IText objects behave when the bringToFront method is used. In this case, our itext1 object will now be at the top of the stack and hence it will no longer be hidden behind itext2.

<!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 bringToFront method</h2>
   <p> You can see that the first itext object is no longer hidden behind the second itext object </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 itext1 = new fabric.IText("First itext object.", {
         width: 300,
         left: 110,
         top: 70,
         fill: "#b666d2",
         fontStyle: "bold",
         backgroundColor: "#f8f4ff",
      });

      // Initiate another itext object
      var itext2 = new fabric.IText("Second itext object.", {
         width: 300,
         left: 130,
         top: 90,
         fill: "white",
         backgroundColor: "#c8a2c8",
      });
      
      // Add it to the canvas
      canvas.add(itext1);
      canvas.add(itext2);

      // Using the bringToFront method
      itext1.bringToFront();
   </script>
</body>
</html>
Updated on 13-Sep-2022 08:27:55

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