Here is the CSS code for styling the canvas object that I am currently using:
canvas{
border: solid black 2px;
background:url("http://upload.wikimedia.org/wikipedia/en/a/aa/Bart_Simpson_200px.png");
background-repeat:no-repeat;
}
Is there a way to adjust the size of the canvas to match that of the background image?
To adjust the size of an unchanging image, modify the width and height properties using CSS.
canvas{
border: solid black 2px;
background: url("http://upload.wikimedia.org/wikipedia/en/a/aa/Bart_Simpson_200px.png");
background-repeat:no-repeat;
width: 200px;
height: 298px;
}
If you have a dynamic image, opt for JavaScript to handle it.
HTML:
<canvas id="canvas"><img src="dynamic_url" id="dynamic_img" /></canvas>
JS:
function resizeCanvas()
{
var img = document.getElementById('dynamic_img');
var width = img.clientWidth;
var height = img.clientHeight;
var canvas = document.getElementById('canvas');
canvas.style.width = width;
canvas.style.height = height;
}
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