Fabric.js Itext lockScalingY 属性

Introduction

The lockScalingY attribute is a property of the IText class in Fabric.js that allows you to lock the scaling of the Y-axis of the text.

IText is a subclass of Text that allows you to edit the text on the canvas.

Syntax

var itext = new fabric.IText('Hello World', {
  lockScalingY: true
});

Explanation

By setting the lockScalingY attribute to true, you can prevent the user from changing the height of the text while allowing them to change the width.

This can be useful in scenarios where you want to maintain the aspect ratio of the text, or when you want to ensure that the text is always the same height regardless of the font size.

Example

Here's an example that demonstrates how to use the lockScalingY attribute in Fabric.js:

// Create a canvas
var canvas = new fabric.Canvas('canvas');

// Create an IText object
var itext = new fabric.IText('Hello World', {
  left: 100,
  top: 100,
  lockScalingY: true
});

// Add the IText object to the canvas
canvas.add(itext);

In this example, a canvas is created and an IText object is added to it. The lockScalingY attribute is set to true, so the height of the text cannot be changed by the user.

Conclusion

The lockScalingY attribute is a useful property of the IText class in Fabric.js that allows you to control the scaling of the text on the Y-axis. By setting this attribute to true, you can prevent the user from changing the height of the text and maintain its aspect ratio.