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@HarryStevens
Last active Oct 27, 2017
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What would you like to do?
Sort HTML Elements by Hue
license: gpl-3.0
height: 665
<html>
<head>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
How big do you want your grid?
<span class="grid-size-option link" data-grid-size="3">3x3</span>
<span class="grid-size-option link" data-grid-size="4">4x4</span>
<span class="grid-size-option link" data-grid-size="5">5x5</span>
<span class="grid-size-option link" data-grid-size="6">6x6</span>
<span class="grid-size-option link" data-grid-size="7">7x7</span>
<span class="grid-size-option link" data-grid-size="8">8x8</span>
<span class="grid-size-option link" data-grid-size="9">9x9</span>
<span class="grid-size-option link" data-grid-size="10">10x10</span>
<span class="link sort">SORT!</span>
<div class="grid"></div>
<!-- js -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script src="scripts.js"></script>
</body>
</html>
// Function draws a grid.
// x is the cell dimensions
function drawGrid(x) {
// Empty the grid so we don't append to previously created elements
$('.grid').empty();
// Create the number of rows necessary
for (var i = 0; i < x; i++) {
$('.grid').append('<div class="grid-row">');
}
// Add the appropriate amount of cell wrappers to each row
$('.grid-row').each(function() {
$('.grid-row').append('<div class="grid-cell-wrapper">');
});
function resize(width) {
// Set the sizes of the cell wrapper and the cell inside of it
$('.grid-cell-wrapper').css('width', width);
$('.grid-cell-wrapper').css('height', $('.grid-cell-wrapper').width());
$('.grid-row').css('height', $('.grid-cell-wrapper').width());
$('.grid-cell-wrapper').append('<div class="grid-cell">');
$('.grid-cell').css('width', $('.grid-cell-wrapper').width() * .98);
$('.grid-cell').css('height', $('.grid-cell-wrapper').width() * .98);
}
// responsive!
resize($('.grid-row').width() / x);
$(window).resize(function() {
resize($('.grid-row').width() / x);
});
// Randomly assign colors to the background
d3.selectAll('.grid-cell').style('background', function() {
return 'hsl(' + Math.random() * 360 + ',100%,50%)';
});
}
// Function to convert RGB colors to HSL, which can then be sorted by hue. See: https://stackoverflow.com/questions/11923659/javascript-sort-rgb-values
function rgbToHsl(c) {
var r = c[0] / 255, g = c[1] / 255, b = c[2] / 255;
var max = Math.max(r, g, b), min = Math.min(r, g, b);
var h, s, l = (max + min) / 2;
if (max == min) {
h = s = 0;
// achromatic
} else {
var d = max - min;
s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
switch(max) {
case r:
h = (g - b) / d + (g < b ? 6 : 0);
break;
case g:
h = (b - r) / d + 2;
break;
case b:
h = (r - g) / d + 4;
break;
}
h /= 6;
}
return new Array(h * 360, s * 100, l * 100);
}
// This turns your color string from the RGB background-color value of the cells into an array of numbers,
// which can then be converted into HSL
function colorStringToNumbers(array) {
var numberArray = [];
for (var i = 0; i < array.length; i++) {
numberArray.push(Number(array[i].trim()));
}
return numberArray;
}
// Create the object from the squares that lets us sort them
function createColorJSON(array) {
var json = [];
for (var i = 0; i < array.length; i++) {
var obj = {};
// The key value pairs are the index, the div selector, the div rgb color, the convert hsl color's hue
obj.index = i;
obj.selector = array[i];
obj.color = $(obj.selector).find('.grid-cell').css('background-color');
obj.hue = rgbToHsl(colorStringToNumbers(((obj.color.split('(')[1]).split(')')[0]).split(',')))[0];
json.push(obj);
}
return json;
}
function sortSquares(json) {
var sorted = _.sortBy(json,'hue');
$('.grid-cell').each(function(i){
$(this).css('background-color',sorted[i].color);
});
}
$(document).ready(function() {
// Start by drawing a grid of 5x5 dimensions
drawGrid(3);
// Then allow the user to select the size of the grid
$('.grid-size-option').click(function() {
var size = $(this).attr('data-grid-size');
drawGrid(size);
});
// Let the user sort the squares
$('.sort').click(function(){
sortSquares(createColorJSON($('.grid-cell-wrapper')));
});
});
body {
margin: 0 auto;
display: table;
font-family: "Helvetica Neue", sans-serif;
}
.link {
color: #1a8cff;
cursor: pointer;
-webkit-user-select: none; /* Chrome all / Safari all */
-moz-user-select: none; /* Firefox all */
-ms-user-select: none; /* IE 10+ */
}
.link:hover {
color: #0066cc;
text-decoration: underline;
}
.grid {
margin-top: 5px;
}
.grid-size-option {
margin-right: 17px;
}
.grid-cell-wrapper {
float: left;
}
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