Fullscreen image in Canvas

Developer
Size
2,268 Kb
Views
30,360

How do I make an fullscreen image in canvas?

In a project, I needed to draw image fullscreen in canvas.. What is a fullscreen image in canvas? How do you make a fullscreen image in canvas? This script and codes were developed by Chrysto on 16 July 2022, Saturday.

Fullscreen image in Canvas Previews

Fullscreen image in Canvas - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>Fullscreen image in Canvas</title> <script src="http://s.codepen.io/assets/libs/modernizr.js" type="text/javascript"></script> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css"> <link rel="stylesheet" href="css/style.css">
</head>
<body> <div class="canvas__holder"> <canvas id="image__canvas"> </canvas>
</div> <script src='http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script> <script src="js/index.js"></script>
</body>
</html>

Fullscreen image in Canvas - Script Codes CSS Codes

body, html, div, canvas { margin: 0; padding: 0; outline: none; box-sizing: border-box;
}

Fullscreen image in Canvas - Script Codes JS Codes

$(function() { var $window = $(window), $canvasHolder = $(".canvas__holder"), $canvas = $("#image__canvas"), canvas = $canvas.get(0), canvasContext = canvas.getContext("2d") var winWidth, winHeight, winRatio, imgWidth, imgHeight, imgRatio, canvasInited; var img; var $img = $("<img />", { "src": "http://ivayloyovchev.com/pulsepro/data/img/gallery/personal/IMG_0010_.jpg" }).load(function() { img = $img.get(0); imgWidth = img.width; imgHeight = img.height; imgRatio = imgWidth / imgHeight; canvasInited = true; resizeCanvas(); }); $window.on("resize", onResize); $window.trigger("resize"); function onResize() { winWidth = $window.width(); winHeight = $window.height(); winRatio = winWidth / winHeight; $canvas.attr({ "width": winWidth + "px", "height": winHeight + "px" }); $canvasHolder.add($canvas).css({ "width": winWidth + "px", "height": winHeight + "px" }); if (canvasInited) { resizeCanvas(); } } function resizeCanvas() { var newWidth = winWidth, newHeight = winHeight, newX = 0, newY = 0; if (winRatio > imgRatio) { newHeight = Math.round(winWidth / imgRatio); newY = (winHeight - newHeight) / 2; } else { newWidth = Math.round(winHeight * imgRatio); newX = (winWidth - newWidth) / 2; } canvasContext.drawImage(img, newX, newY, newWidth, newHeight); }
});
Fullscreen image in Canvas - Script Codes
Fullscreen image in Canvas - Script Codes
Home Page Home
Developer Chrysto
Username bassta
Uploaded July 16, 2022
Rating 3
Size 2,268 Kb
Views 30,360
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Chrysto (bassta) Script Codes
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