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POPreventing Canvas Clear when Resizing Window
 

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    <p>I'm trying to create a simple app that draws rectangles within the Canvas tag. I've got the Canvas resizing to fullscreen, but whenever I resize the viewport, Canvas clears. I'm trying to prevent it from clearing and just keeping the content thats within it. Any ideas?</p> <p><a href="http://mediajux.com/experiments/canvas/drawing/" rel="noreferrer">http://mediajux.com/experiments/canvas/drawing/</a></p> <p>Thanks!</p> <pre><code> /* * This is the primary class used for the application * @author Alvin Crespo */ var app = (function(){ var domBod = document.body; var canvas = null; var canvasWidth = null; var canvasHeight = null; return { //Runs after the DOM has achieved an onreadystatechange of "complete" initApplication: function() { //setup envrionment variables canvas = document.getElementById('canvas') || null; //we need to resize the canvas at the start of the app to be the full window this.windowResized(); //only set the canvas height and width if it is not false/null if(canvas) { canvasWidth = canvas.offsetWidth; canvasHeight = canvas.offsetHeight; } //add window events window.onresize = this.windowResized; circles.canvas = canvas; circles.canvasWidth = canvasWidth; circles.canvasHeight = canvasHeight; circles.generateCircles(10); setInterval(function(){ circles.animateCircles(); }, 50); }, /** * Executes Resizing procedures on the canvas element */ windowResized: function() { (this.domBod === null) ? 'true' : 'false'; try{ console.log(canvas); canvas.setAttribute('width', document.body.clientWidth); canvas.setAttribute('height', document.body.clientHeight); }catch(e) { console.log(e.name + " :: " + e.message); } }, /** * Returns the canvas element * @returns canvas */ getCanvas: function() { return canvas; } }; })(); </code></pre>
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