Fabric.js Polygon evented Property
Last Updated :
17 Jan, 2021
In this article, we are going to see how to set evented property of the canvas Polygon using FabricJS. The canvas Polygon means Polygon is movable and can be stretched according to requirement. Further, the Polygon can be customized when it comes to initial stroke color, height, width, fill color, or stroke width.
To make this possible we are going to use a JavaScript library called FabricJS. After importing the library, we will create a canvas block in the body tag which will contain the Polygon. After this, we will initialize instances of Canvas and Polygon provided by FabricJS and disable the canvas click movement property of canvas Polygon using evented property and render the Polygon on the Canvas as given below.
Syntax:
fabric.Polygon([
{ x: pixel, y: pixel },
{ x: pixel, y: pixel },
{ x: pixel, y: pixel},
{ x: pixel, y: pixel},
{ x: pixel, y: pixel }],
{ evented: boolean }
);
Parameters: This function accepts three parameters as mentioned above and described below:
- evented: It specifies whether to enable or disable the target of events.
The below example illustrates the evented property:
Example:
HTML
<!DOCTYPE html>
< html >
< head >
< script src =
</ script >
</ head >
< body >
< div style = "text-align: center;width: 600px;" >
< h1 style = "color: green;" >
GeeksforGeeks
</ h1 >
< b >
Fabric.js | Polygon evented Property
</ b >
</ div >
< canvas id = "canvas"
width = "600"
height = "200"
style = "border:1px solid #000000;" >
</ canvas >
< script >
// Initiate a Canvas instance
var canvas = new fabric.Canvas("canvas");
// Initiate a polygon instance
var polygon = new fabric.Polygon([
{ x: 295, y: 10 },
{ x: 235, y: 198 },
{ x: 385, y: 78},
{ x: 205, y: 78},
{ x: 355, y: 198 }], {
stroke: 'green',
strokeWidth: 3,
cornerStyle: 'circle',
excludeFromExport: false,
evented: false
});
// Render the polygon in canvas
canvas.add(polygon);
</ script >
</ body >
</ html >
|
Output:
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