JavaScript Using canvas to draw image at true size using canvas to draw,using html5 draw canvas containing star,

I'm trying to load an image from a URL into a HTML canvas at a 1:1 scale. I load the image, and set the canvas DOM element to the appropriate dimensions, but for some reason the image in the canvas is significantly upscaled and therefore only the top left hand corner is drawn.

This is demonstrated by the following JSFiddle: http://jsfiddle.net/KdrYr/1/

var img = new Image();
var cv = document.getElementById('thecanvas');
img.src = 'http://www.photographyblogger.net/wp-content/uploads/2009/12/Picture-in-a-picture4.jpg';
img.onload = function() {
    var ctx = cv.getContext('2d');
    cv.style.width = img.width + 'px';
    cv.style.height = img.height + 'px';
    ctx.drawImage(img, 0, 0);
};

For example, I'm trying to draw this (sorry about the big images :/)

Expected Image

But end up with this

Actual image

What could be causing this?

Answer:1

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