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How to scale a Text object equally to horizontal and vertical direction using FabricJS?
In this tutorial, we are going to learn how to scale a Text object equally to horizontal and vertical direction using FabricJS. We can display text on canvas by adding an instance of fabric.Text. Not only does it allow us to move, scale and change the dimensions of the text but it also provides additional functionality like text alignment, text decoration, line height which can be obtained by the properties textAlign, underline and lineHeight respectively. Similarly we can also scale a Text object by using the scale method.
Syntax
scale(value: Number)
Parameters
scale − This parameter accepts a Number which sets the scale factor of a text object.
Example 1
Default appearance of the Text object
Let’s see a code example to see how our text object looks when the scale method is not used. In this case, our text object will not be scaled in horizontal and vertical directions.
<!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>Default appearance of the Text object</h2> <p>You can see that the object has not been scaled in horizontal or vertical direction</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 a text object var text = new fabric.Text("Add sample
text here.", { width: 300, left: 60, top: 70, fill: "green", }); // Add it to the canvas canvas.add(text); </script> </body> </html>
Example 2
Passing the scale method with a custom value
In this example, we will see how assigning a value to the scale method scales our text object equally in horizontal and vertical directions. Since we have passed the value as 2, that is the scale factor that will now be taken into account.
<!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>Passing the scale method with a custom value</h2> <p>You can see that the object has been scaled equally in horizontal and vertical direction</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 a text object var text = new fabric.Text("Add sample
text here.", { width: 300, left: 110, top: 70, fill: "green", }); // Using the scale method text.scale(2); // Add it to the canvas canvas.add(text); </script> </body> </html>
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