FabricJS - How to set the size of a line's control angle?
In this tutorial, we will learn how to set the size of a Line control corner using FabricJS. The control corners of an object allow us to scale, stretch or change its position. We can customize the control corner in many ways, such as adding a specific color to it, changing its size, etc. We can change the size using the cornerSize property. p>
Syntax
new fabric.Line( points: Array, { cornerSize: Number }: Object) Parameters
points - This parameter accepts an array of points, This array determines the (x1, y1) and (x2, y2) values, which are the x-axis and y-axis coordinates of the starting and ending points of the line, respectively.
options (optional) - This parameter is an object that provides additional customize. Using this parameter, you can change the object's origin, stroke width, and many other properties related to the cornerSize property.
Options Keys< /ul> cornerSize - This property accepts a number that allows us to manipulate the options Determines the size of the object's control angle. Its default value is 13.
Default size of control corners
Example
Let's look at an example describing the default size of control corners when a line object is actively selected.
<!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 size of the controlling corners</h2>
<p>You can select the line object to see the default size of controlling corners</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 Line object
var line = new fabric.Line([200, 100, 100, 40], {
stroke: "blue",
strokeWidth: 20,
});
// Add it to the canvas
canvas.add(line);
</script>
</body>
</html>
Pass
cornerSize as key with custom value Example
In this example, we pass the
cornerSize property as the key with a value of 17. We can see that when the line object is selected.
<!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 cornerSize as key with a custom value</h2>
<p>You can select the line object to see the size of controlling corners</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 Line object
var line = new fabric.Line([200, 100, 100, 40], {
stroke: "blue",
strokeWidth: 20,
cornerColor: "#87a96b",
cornerSize: 17,
});
// Add it to the canvas
canvas.add(line);
</script>
</body>
</html>
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