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How to get canvas in fullscreen-mode with kineticjs?

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by aubrey , in category: Javascript , a month ago

How to get canvas in fullscreen-mode with kineticjs?

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1 answer

Member

by lily , a month ago

@aubrey 

To create a canvas in fullscreen mode using KineticJS, you can follow these steps:

  1. Create a new KineticJs stage:
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var stage = new Kinetic.Stage({
    container: 'container', // container id
    width: window.innerWidth, // set canvas width to browser window width
    height: window.innerHeight // set canvas height to browser window height
});


  1. Add layers and shapes to the stage as needed:
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var layer = new Kinetic.Layer();
var circle = new Kinetic.Circle({
    x: stage.getWidth() / 2,
    y: stage.getHeight() / 2,
    radius: 50,
    fill: 'red'
});

layer.add(circle);
stage.add(layer);


  1. Add an event listener to resize the canvas when the browser window is resized:
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window.addEventListener('resize', function() {
    stage.setWidth(window.innerWidth);
    stage.setHeight(window.innerHeight);
    stage.draw();
});


  1. To make the canvas fullscreen when a button is clicked, you can use the Fullscreen API:
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var button = document.getElementById('fullscreen-button');
button.addEventListener('click', function() {
    if (document.fullscreenElement) {
        document.exitFullscreen(); // exit fullscreen mode
    } else {
        stage.getContainer().requestFullscreen(); // request fullscreen mode
    }
});


Make sure to include KineticJS in your HTML file, along with a container element for the canvas:

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<!DOCTYPE html>
<html>
<head>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/kineticjs/5.2.0/kinetic.min.js"></script>
    <title>Fullscreen Canvas with KineticJS</title>
</head>
<body>
    <div id="container"></div>
    <button id="fullscreen-button">Toggle Fullscreen</button>
    <script src="script.js"></script>
</body>
</html>


With these steps, you can create a canvas in fullscreen mode using KineticJS and handle resizing events to adjust the canvas size accordingly.

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