<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="fr" lang="fr"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>rotate()</title> <style type="text/css" media="screen"> img, canvas { border: 1px solid black; } </style> <script type="text/javascript"> function rotate(p_deg) { if(document.getElementById('canvas')) { /* Ok!: Firefox 2, Safari 3, Opera 9.5b2 No: Opera 9.27 */ var image = document.getElementById('image'); var canvas = document.getElementById('canvas'); var canvasContext = canvas.getContext('2d'); switch(p_deg) { default : case 0 : canvas.setAttribute('width', image.width); canvas.setAttribute('height', image.height); canvasContext.rotate(p_deg * Math.PI / 180); canvasContext.drawImage(image, 0, 0); break; case 90 : canvas.setAttribute('width', image.height); canvas.setAttribute('height', image.width); canvasContext.rotate(p_deg * Math.PI / 180); canvasContext.drawImage(image, 0, -image.height); break; case 180 : canvas.setAttribute('width', image.width); canvas.setAttribute('height', image.height); canvasContext.rotate(p_deg * Math.PI / 180); canvasContext.drawImage(image, -image.width, -image.height); break; case 270 : case -90 : canvas.setAttribute('width', image.height); canvas.setAttribute('height', image.width); canvasContext.rotate(p_deg * Math.PI / 180); canvasContext.drawImage(image, -image.width, 0); break; }; } else { /* Ok!: MSIE 6 et 7 */ var image = document.getElementById('image'); switch(p_deg) { default : case 0 : image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=0)'; break; case 90 : image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=1)'; break; case 180 : image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=2)'; break; case 270 : case -90 : image.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(rotation=3)'; break; }; }; }; window.onload = function() { var image = document.getElementById('image'); var canvas = document.getElementById('canvas'); if(canvas.getContext) { image.style.visibility = 'hidden'; image.style.position = 'absolute'; } else { canvas.parentNode.removeChild(canvas); }; rotate(0); }; </script> </head> <body> <p> rotate: <input type="button" value="0°" onclick="rotate(0);" /> <input type="button" value="90°" onclick="rotate(90);" /> <input type="button" value="180°" onclick="rotate(180);" /> <input type="button" value="-90°" onclick="rotate(-90);" /> </p> <p> <img id="image" src="http://www.google.com/intl/en_ALL/images/logo.gif" alt="" /> <canvas id="canvas"></canvas> </p> </body> </html>
Source: AB-D.fr - Effectuer une rotation d'image en CSS ( rotate balise canvas HTML5 )
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