Created
July 9, 2013 15:42
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Pure CSS3 Image !
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<!DOCTYPE html> | |
<html lang="en"> | |
<head> | |
<meta charset="UTF-8" /> | |
<title>Image 2 Box-Shadow !!!</title> | |
</head> | |
<body> | |
<div id="box"></div> | |
<script src="image2boxshadow.js" type="text/javascript"></script> | |
</body> | |
</html> |
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var | |
map = [], | |
canvas = document.createElement('canvas'), | |
ctx = canvas.getContext('2d'), | |
image = new Image(), | |
scale = 4, | |
zeroFill = function(num, padding) { | |
return Array(padding + 1 - (num + '').length).join('0') + num; | |
}, | |
calcImgData = function (){ | |
canvas.width = image.width; | |
canvas.height = image.height; | |
ctx.drawImage(image, 0, 0, image.width, image.height); | |
var data = ctx.getImageData(0, 0, canvas.width, canvas.height).data; | |
for (var i = 0; i < data.length; i+=4) { | |
var | |
red = zeroFill(data[i].toString(16), 2), | |
green = zeroFill(data[i + 1].toString(16), 2), | |
blue = zeroFill(data[i + 2].toString(16), 2), | |
hex = red + green + blue; | |
map.push(hex); | |
} | |
drawImg(); | |
}, | |
drawImg = function (){ | |
var boxShadow = [],k=0; | |
for(var i=0;i<canvas.width;i++){ | |
for(var j=0;j<canvas.height;j++){ | |
boxShadow.push( ((j+1)*scale)+'px '+(i*scale)+'px '+'0px 0 #'+map[k] ); | |
k++; | |
} | |
} | |
boxShadow=boxShadow.join(','); | |
console.log(boxShadow); | |
box.style.cssText = "width:" + scale + "px; height:" + scale + "px;box-shadow:" + boxShadow; | |
}, | |
init = function(){ | |
image.onload = calcImgData; | |
image.src = 'img.jpg'; | |
}; | |
init(); |
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Demo : http://codepen.io/AliMD/pen/sqrnb