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Drag'n'drop working again. Appending quantize.js code into color-thief.js

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This commit is contained in:
Lokesh Dhakar
2013-06-23 18:26:36 -07:00
parent d3800d634d
commit 4272252db9
5 changed files with 896 additions and 343 deletions
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337
css/app.css
View File

@@ -63,96 +63,127 @@ article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav,
display: block;
}
/* line 29, ../sass/app.sass */
/* line 30, ../sass/app.sass */
body, input, textarea {
margin: 40px;
margin: 40px 40px 80px 40px;
color: #aaaaaa;
background: #444444;
font-size: 18px;
font-family: "Karla", "lucida grande", sans-serif;
}
/* line 36, ../sass/app.sass */
/* line 37, ../sass/app.sass */
h1, h2, h3, h4, h5, h6 {
color: white;
line-height: 1.2em;
font-weight: 500;
margin-bottom: 0.5em;
}
/* line 42, ../sass/app.sass */
h2 {
font-size: 36px;
line-height: 1.2em;
h1 {
font-size: 72px;
line-height: 1em;
}
/* line 46, ../sass/app.sass */
h3 {
font-size: 16px;
letter-spacing: 0.1em;
text-transform: uppercase;
h2 {
font-size: 36px;
line-height: 1.2em;
margin-bottom: 0.2em;
}
/* line 51, ../sass/app.sass */
h3 {
font-size: 16px;
letter-spacing: 0.1em;
margin-bottom: 0.2em;
text-transform: uppercase;
}
/* line 57, ../sass/app.sass */
h4 {
font-size: 20px;
margin-bottom: 1.25em;
margin-bottom: 1em;
}
/* line 55, ../sass/app.sass */
/* line 61, ../sass/app.sass */
p {
line-height: 1.5em;
margin-bottom: 1.25em;
line-height: 1.4em;
margin-bottom: 1em;
}
/* line 59, ../sass/app.sass */
/* line 65, ../sass/app.sass */
strong {
font-weight: bold;
}
/* line 68, ../sass/app.sass */
code,
kbd {
font: 12px "Andale Mono", "DejaVu Sans Mono", monospace;
color: #848484;
}
/* Links */
/* line 63, ../sass/app.sass */
/* line 74, ../sass/app.sass */
a {
color: #00bfa8;
text-decoration: none;
}
/* line 66, ../sass/app.sass */
/* line 77, ../sass/app.sass */
a:hover {
color: #59ffeb;
}
/* Images */
/* line 81, ../sass/app.sass */
img {
display: block;
}
/* -- Layout ------------------------------------------------------------------ */
/* line 71, ../sass/app.sass */
/* line 86, ../sass/app.sass */
.wrapper {
text-align: center;
max-width: 600px;
margin: 0 auto;
}
/* line 76, ../sass/app.sass */
/* line 90, ../sass/app.sass */
.section-header {
text-align: center;
}
/* line 93, ../sass/app.sass */
.intro {
text-align: center;
margin-bottom: 2em;
}
/* line 97, ../sass/app.sass */
.description {
max-width: 450px;
margin-right: auto;
margin-left: auto;
}
/* line 81, ../sass/app.sass */
/* line 102, ../sass/app.sass */
.read-more-links {
font-size: 16px;
}
/* line 105, ../sass/app.sass */
.image-section {
margin-bottom: 80px;
background: #2b2b2b;
}
/* line 84, ../sass/app.sass */
/* line 108, ../sass/app.sass */
.image-section .image-wrap {
position: relative;
background: #444444;
}
/* line 89, ../sass/app.sass */
.target-image {
width: 100%;
}
/* line 92, ../sass/app.sass */
/* -- Image examples ------------------------------------------------------------------ */
/* line 115, ../sass/app.sass */
.run-functions-button {
position: absolute;
top: 50%;
@@ -167,17 +198,18 @@ a:hover {
-ms-border-radius: 50%;
-o-border-radius: 50%;
border-radius: 50%;
color: #817702;
color: #686002;
background-color: #fdf485;
font-size: 24px;
font-weight: 500;
cursor: pointer;
}
/* line 106, ../sass/app.sass */
/* line 130, ../sass/app.sass */
.run-functions-button:hover {
background-color: #fef9b7;
color: #9a8f03;
color: #4f4901;
}
/* line 109, ../sass/app.sass */
/* line 133, ../sass/app.sass */
.run-functions-button:active {
-webkit-transform: scale(0.9, 0.9);
-moz-transform: scale(0.9, 0.9);
@@ -185,171 +217,157 @@ a:hover {
-o-transform: scale(0.9, 0.9);
transform: scale(0.9, 0.9);
}
/* line 112, ../sass/app.sass */
.color-thief-output {
margin-top: 20px;
/* line 135, ../sass/app.sass */
.run-functions-button.hide {
-webkit-transition: all 0.4s;
-moz-transition: all 0.4s;
-o-transition: all 0.4s;
transition: all 0.4s;
top: 100%;
-webkit-transform: scale(0, 0);
-moz-transform: scale(0, 0);
-ms-transform: scale(0, 0);
-o-transform: scale(0, 0);
transform: scale(0, 0);
}
/* line 115, ../sass/app.sass */
/* line 140, ../sass/app.sass */
.target-image {
width: 100%;
}
/* line 143, ../sass/app.sass */
.color-thief-output {
display: none;
padding: 20px;
background-color: #eeeeee;
}
/* line 147, ../sass/app.sass */
.color-thief-output .function-title {
color: #444444;
font-weight: bold;
}
/* line 151, ../sass/app.sass */
.function {
clear: left;
margin-bottom: 10px;
}
/* line 154, ../sass/app.sass */
.swatches {
*zoom: 1;
}
/* line 38, ../../../../.rvm/gems/ruby-1.9.2-p320/gems/compass-0.12.2/frameworks/compass/stylesheets/compass/utilities/general/_clearfix.scss */
.function:after {
.swatches:after {
content: "";
display: table;
clear: both;
}
/* line 120, ../sass/app.sass */
/* line 157, ../sass/app.sass */
.swatch {
width: 60px;
height: 30px;
margin-right: 2px;
margin: 0 2px 2px 0;
background: #dddddd;
float: left;
-webkit-transition: scale 0.5s;
-moz-transition: scale 0.5s;
-o-transition: scale 0.5s;
transition: scale 0.5s;
}
/* line 127, ../sass/app.sass */
.swatch:hover {
-webkit-transition: none;
-moz-transition: none;
-o-transition: none;
transition: none;
-webkit-transform: scale(1.1, 1.1);
-moz-transform: scale(1.1, 1.1);
-ms-transform: scale(1.1, 1.1);
-o-transform: scale(1.1, 1.1);
transform: scale(1.1, 1.1);
-webkit-box-shadow: 0 1px 10px black;
-moz-box-shadow: 0 1px 10px black;
box-shadow: 0 1px 10px black;
}
/* Hardcoding the offset for the FB icon example */
/* line 133, ../sass/app.sass */
.fbIcon .imageWrap .targetImage {
-webkit-border-radius: 0;
-moz-border-radius: 0;
-ms-border-radius: 0;
-o-border-radius: 0;
border-radius: 0;
position: relative;
top: 142px;
left: 192px;
}
/* line 139, ../sass/app.sass */
/* line 164, ../sass/app.sass */
canvas {
display: none;
}
/* -- Animated logo ------------------------------------------------------------------ */
/* line 143, ../sass/app.sass */
h1 {
font-size: 72px;
line-height: 0.5em;
margin-bottom: 0.3em;
}
/* line 147, ../sass/app.sass */
h1 small {
font-size: 20px;
}
/* line 150, ../sass/app.sass */
h1 .char1 {
/* line 169, ../sass/app.sass */
.logo .char1 {
-webkit-transition: color 0.1s;
-moz-transition: color 0.1s;
-o-transition: color 0.1s;
transition: color 0.1s;
}
/* line 152, ../sass/app.sass */
h1 .char2 {
/* line 171, ../sass/app.sass */
.logo .char2 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.05s;
-moz-transition: color 0.1s 0.05s;
-o-transition: color 0.1s 0.05s;
transition: color 0.1s 0.05s;
}
/* line 154, ../sass/app.sass */
h1 .char3 {
/* line 173, ../sass/app.sass */
.logo .char3 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.1s;
-moz-transition: color 0.1s 0.1s;
-o-transition: color 0.1s 0.1s;
transition: color 0.1s 0.1s;
}
/* line 156, ../sass/app.sass */
h1 .char4 {
/* line 175, ../sass/app.sass */
.logo .char4 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.15s;
-moz-transition: color 0.1s 0.15s;
-o-transition: color 0.1s 0.15s;
transition: color 0.1s 0.15s;
}
/* line 158, ../sass/app.sass */
h1 .char5 {
/* line 177, ../sass/app.sass */
.logo .char5 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.2s;
-moz-transition: color 0.1s 0.2s;
-o-transition: color 0.1s 0.2s;
transition: color 0.1s 0.2s;
}
/* line 161, ../sass/app.sass */
h1 .char7 {
/* line 180, ../sass/app.sass */
.logo .char7 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.3s;
-moz-transition: color 0.1s 0.3s;
-o-transition: color 0.1s 0.3s;
transition: color 0.1s 0.3s;
}
/* line 163, ../sass/app.sass */
h1 .char8 {
/* line 182, ../sass/app.sass */
.logo .char8 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.35s;
-moz-transition: color 0.1s 0.35s;
-o-transition: color 0.1s 0.35s;
transition: color 0.1s 0.35s;
}
/* line 165, ../sass/app.sass */
h1 .char9 {
/* line 184, ../sass/app.sass */
.logo .char9 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.4s;
-moz-transition: color 0.1s 0.4s;
-o-transition: color 0.1s 0.4s;
transition: color 0.1s 0.4s;
}
/* line 167, ../sass/app.sass */
h1 .char10 {
/* line 186, ../sass/app.sass */
.logo .char10 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.45s;
-moz-transition: color 0.1s 0.45s;
-o-transition: color 0.1s 0.45s;
transition: color 0.1s 0.45s;
}
/* line 169, ../sass/app.sass */
h1 .char11 {
/* line 188, ../sass/app.sass */
.logo .char11 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.5s;
-moz-transition: color 0.1s 0.5s;
-o-transition: color 0.1s 0.5s;
transition: color 0.1s 0.5s;
}
/* line 172, ../sass/app.sass */
h1:hover .char1 {
/* line 191, ../sass/app.sass */
.logo:hover .char1 {
-webkit-transition: color 0.1s;
-moz-transition: color 0.1s;
-o-transition: color 0.1s;
transition: color 0.1s;
color: #ff4040;
}
/* line 175, ../sass/app.sass */
h1:hover .char2 {
/* line 194, ../sass/app.sass */
.logo:hover .char2 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.05s;
-moz-transition: color 0.1s 0.05s;
@@ -357,8 +375,8 @@ h1:hover .char2 {
transition: color 0.1s 0.05s;
color: #ff8000;
}
/* line 178, ../sass/app.sass */
h1:hover .char3 {
/* line 197, ../sass/app.sass */
.logo:hover .char3 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.1s;
-moz-transition: color 0.1s 0.1s;
@@ -366,8 +384,8 @@ h1:hover .char3 {
transition: color 0.1s 0.1s;
color: #fdf485;
}
/* line 181, ../sass/app.sass */
h1:hover .char4 {
/* line 200, ../sass/app.sass */
.logo:hover .char4 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.15s;
-moz-transition: color 0.1s 0.15s;
@@ -375,8 +393,8 @@ h1:hover .char4 {
transition: color 0.1s 0.15s;
color: #00bfa8;
}
/* line 184, ../sass/app.sass */
h1:hover .char5 {
/* line 203, ../sass/app.sass */
.logo:hover .char5 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.2s;
-moz-transition: color 0.1s 0.2s;
@@ -384,8 +402,8 @@ h1:hover .char5 {
transition: color 0.1s 0.2s;
color: #0096df;
}
/* line 188, ../sass/app.sass */
h1:hover .char7 {
/* line 207, ../sass/app.sass */
.logo:hover .char7 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.3s;
-moz-transition: color 0.1s 0.3s;
@@ -393,8 +411,8 @@ h1:hover .char7 {
transition: color 0.1s 0.3s;
color: #ff4040;
}
/* line 191, ../sass/app.sass */
h1:hover .char8 {
/* line 210, ../sass/app.sass */
.logo:hover .char8 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.35s;
-moz-transition: color 0.1s 0.35s;
@@ -402,8 +420,8 @@ h1:hover .char8 {
transition: color 0.1s 0.35s;
color: #ff8000;
}
/* line 194, ../sass/app.sass */
h1:hover .char9 {
/* line 213, ../sass/app.sass */
.logo:hover .char9 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.4s;
-moz-transition: color 0.1s 0.4s;
@@ -411,8 +429,8 @@ h1:hover .char9 {
transition: color 0.1s 0.4s;
color: #fdf485;
}
/* line 197, ../sass/app.sass */
h1:hover .char10 {
/* line 216, ../sass/app.sass */
.logo:hover .char10 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.45s;
-moz-transition: color 0.1s 0.45s;
@@ -420,8 +438,8 @@ h1:hover .char10 {
transition: color 0.1s 0.45s;
color: #00bfa8;
}
/* line 200, ../sass/app.sass */
h1:hover .char11 {
/* line 219, ../sass/app.sass */
.logo:hover .char11 {
-webkit-transition: color 0.1s;
-webkit-transition-delay: 0.5s;
-moz-transition: color 0.1s 0.5s;
@@ -431,53 +449,84 @@ h1:hover .char11 {
}
/* -- Drag and drop ------------------------------------------------------------------ */
/* line 207, ../sass/app.sass */
.drag-and-drop {
/* line 226, ../sass/app.sass */
.drag-drop {
display: none;
}
/* line 210, ../sass/app.sass */
.dropZone {
height: 200px;
margin-bottom: 60px;
background: url("../img/drag_placeholder.png");
/* line 229, ../sass/app.sass */
.drop-zone {
height: 400px;
margin-bottom: 80px;
background: url("../img/dark_checkered_bg.png");
}
/* line 214, ../sass/app.sass */
.dropZone.dragging {
-webkit-box-shadow: inset 0 1px 10px #09a1ec;
-moz-box-shadow: inset 0 1px 10px #09a1ec;
box-shadow: inset 0 1px 10px #09a1ec;
/* line 233, ../sass/app.sass */
.drop-zone.dragging {
-webkit-box-shadow: inset 0 0 0 4px #00bfa8;
-moz-box-shadow: inset 0 0 0 4px #00bfa8;
box-shadow: inset 0 0 0 4px #00bfa8;
}
/* line 235, ../sass/app.sass */
.drop-zone.dragging .default-label {
display: none;
}
/* line 237, ../sass/app.sass */
.drop-zone.dragging .dragging-label {
display: block;
}
/* line 216, ../sass/app.sass */
.droppedImage {
/* line 240, ../sass/app.sass */
.drop-zone-label {
position: relative;
top: 170px;
padding: 10px;
margin: 0 100px;
border: 4px solid #fdf485;
-webkit-border-radius: 4px;
-moz-border-radius: 4px;
-ms-border-radius: 4px;
-o-border-radius: 4px;
border-radius: 4px;
color: #fdf485;
font-size: 24px;
text-align: center;
pointer-events: none;
}
/* line 252, ../sass/app.sass */
.dragging-label {
display: none;
}
/* line 256, ../sass/app.sass */
.dropped-image .run-functions-button {
display: none;
}
@media only screen and (max-width: 480px) {
/* line 223, ../sass/app.sass */
/* line 263, ../sass/app.sass */
body {
margin: 40px 0;
font-size: 14px;
}
/* line 226, ../sass/app.sass */
/* line 266, ../sass/app.sass */
.intro {
padding-left: 20px;
padding-right: 20px;
}
/* line 229, ../sass/app.sass */
/* line 269, ../sass/app.sass */
h1 {
font-size: 48px;
}
/* line 231, ../sass/app.sass */
/* line 271, ../sass/app.sass */
h2 {
font-size: 24px;
}
/* line 233, ../sass/app.sass */
/* line 273, ../sass/app.sass */
h3 {
font-size: 14px;
}

158
demo.js
View File

@@ -1,69 +1,89 @@
$(document).ready(function () {
// Uses mustache.js templating to create layout
// Use lettering.js to generate spans for each letter in the logo.
// This is used to create the on hover animated rainbow effect.
$('.logo').lettering();
// ---------------------
// Color Thief demo code
// ---------------------
var imageArray = {images: [
{"file": "img/photo1.jpg"},
{"file": "img/photo2.jpg"},
{"file": "img/photo3.jpg"}
{'file': 'img/photo1.jpg'},
{'file': 'img/photo2.jpg'},
{'file': 'img/photo3.jpg'}
]};
var displayColors = function(image) {
var $image = $(image);
var imageSection = $image.closest('.image-section');
var appendColors = function(colors, root) {
$.each(colors, function(index, value) {
var swatchEl = $('<div>', {'class': 'swatch'})
.css('background-color', 'rgba('+ value +', 1)');
root.append(swatchEl);
// Render example images
var examplesHTML = Mustache.to_html($('#image-section-template').html(), imageArray);
$('#examples').append(examplesHTML);
// Event handlers
$('.run-functions-button').on('click', function(event) {
var $this = $(this);
$this.text('...');
var $imageSection = $this.closest('.image-section');
var $colorThiefOutput = $imageSection.find('.color-thief-output');
var $targetimage = $imageSection.find('.target-image');
showColorsForImage($targetimage, $imageSection);
});
};
var colorThief = new ColorThief();
// Dominant Color
var dominantColor = colorThief.getColor(image);
var dominantSwatch = imageSection.find('.get-color .swatches');
appendColors([dominantColor], dominantSwatch);
var PALETTE_COLOR_COUNT = 10;
// Palette
var colorCount = $image.attr('data-colorcount') ? $image.data('colorcount') : 10;
var medianPalette = colorThief.getPalette(image, colorCount);
var medianCutPalette = imageSection.find('.get-palette .swatches');
appendColors(medianPalette, medianCutPalette);
// Run Color Thief functions and display results below image.
// We also log execution time of functions for display.
var showColorsForImage = function($image, $imageSection ) {
var image = $image[0];
var start = Date.now();
var color = colorThief.getColor(image);
var elapsedTimeForGetColor = Date.now() - start;
var palette = colorThief.getPalette(image, PALETTE_COLOR_COUNT);
var elapsedTimeForGetPalette = Date.now() - start - elapsedTimeForGetColor;
var colorThiefOutput = {
color: color,
palette: palette,
elapsedTimeForGetColor: elapsedTimeForGetColor,
elapsedTimeForGetPalette: elapsedTimeForGetPalette
};
var colorThiefOuputHTML = Mustache.to_html($('#color-thief-output-template').html(), colorThiefOutput);
$imageSection.find('.run-functions-button').addClass('hide');
$imageSection.find('.color-thief-output').append(colorThiefOuputHTML).slideDown();
// If the color-thief-output div is not in the viewport or cut off, scroll down.
var windowHeight = $(window).height();
var currentScrollPosition = $('body').scrollTop()
var outputOffsetTop = $imageSection.find('.color-thief-output').offset().top
if ((currentScrollPosition < outputOffsetTop) && (currentScrollPosition + windowHeight - 250 < outputOffsetTop)) {
$('body').animate({scrollTop: outputOffsetTop - windowHeight + 200 + "px"});
}
};
// Drag'n'drop demo
// Thanks to Nathan Spady (http://nspady.com/) who did the bulk of the drag'n'drop work.
// Setup the drag and drop behavior if supported
if (typeof window.FileReader === 'function') {
$('#dragDrop').show();
var $dropZone = $('#dropZone');
$('#drag-drop').show();
var $dropZone = $('#drop-zone');
var handleDragEnter = function(event){
$dropZone.addClass('dragging');
return false;
};
var handleDragLeave = function(event){
$dropZone.removeClass('dragging');
return false;
};
var handleDragOver = function(event){
return false;
};
var handleDrop = function(event){
$dropZone.removeClass('dragging');
var dt = event.originalEvent.dataTransfer;
var files = dt.files;
handleFiles(files);
handleFiles(event.originalEvent.dataTransfer.files);
return false;
};
$dropZone
.on('dragenter', handleDragEnter)
.on('dragleave', handleDragLeave)
@@ -71,31 +91,30 @@ $(document).ready(function () {
.on('drop', handleDrop);
}
function handleFiles( files ) {
function handleFiles(files) {
var $draggedImages = $('#dragged-images');
var imageType = /image.*/;
var fileCount = files.length;
for (var i = 0; i < fileCount; i++) {
var file = files[i];
if ( file.type.match(imageType) ) {
if (file.type.match(imageType)) {
var reader = new FileReader();
reader.onload = function( e ) {
reader.onload = function(event) {
imageInfo = { images: [
{'class': 'droppedImage', file: e.target.result}
{'class': 'dropped-image', file: event.target.result}
]};
console.log(imageInfo);
var imageSectionHTML = Mustache.to_html($('#image-section-template').html(), imageInfo);
$draggedImages.prepend(imageSectionHTML);
var html = Mustache.to_html($('#template').html(), imageInfo);
$('#draggedImages').prepend( html );
var img = $('.droppedImage .targetImage').get(0);
var $imageSection = $draggedImages.find('.image-section').first();
var $image = $('.dropped-image .target-image');
// Must wait for image to load in DOM, not just load from FileReader
$(img).on('load', function() {
displayColors( img );
util.centerImg( img, 400, 300);
$('.droppedImage').slideDown();
$image.on('load', function() {
showColorsForImage($image, $imageSection);
});
};
reader.readAsDataURL(file);
@@ -104,45 +123,4 @@ $(document).ready(function () {
}
}
}
// Use lettering.js to give letter by letter styling control for the h1 title
$("h1").lettering();
var html = Mustache.to_html($('#image-section-template').html(), imageArray);
$('#examples').append(html);
// For each image:
// Once image is loaded, get dominant color and palette and display them.
// $('img').bind('load', function (event) {
// var image = event.target;
// displayColors(image);
// });
});
var util = {
centerImg: function( img, containerWidth, containerHeight) {
var $img = $(img);
var imgWidth = $img.get(0).width;
var imgHeight = $img.get(0).height;
var imgAspectRatio = imgHeight/imgWidth;
if ( imgHeight > containerHeight ) {
imgWidth = containerHeight / imgAspectRatio;
$img.css('width', ( imgWidth + "px" ));
}
if ( imgWidth > containerWidth ) {
$img.css('width', ( containerWidth + "px" ));
imgHeight = imgAspectRatio * containerWidth;
}
if ( imgWidth < containerWidth ) {
var hOffset = ( containerWidth - imgWidth )/2;
$img.css('margin-left', ( hOffset + "px" ));
}
if ( imgHeight < containerHeight ) {
var vOffset = ( containerHeight - imgHeight )/2;
$img.css('margin-top', ( vOffset + "px" ));
}
}
};

66
index.html
View File

@@ -20,71 +20,81 @@
<div class="wrapper">
<section class="intro">
<h1>Color Thief</h1>
<header>
<h1 class="logo">Color Thief</h1>
</header>
<h4><a href="http://lokeshdhakar.com">by Lokesh Dhakar</a></small></h4>
<p class="description">A script for grabbing the color palette from an image. Uses Javascript and the canvas tag to make it happen.</p>
<p><a href="http://www.lokeshdhakar.com/color-thief/">Read more about it on my blog</a> or <a href="https://github.com/lokesh/color-thief">get the code on Github</a>
</p>
<p class="read-more-links"><a href="http://www.lokeshdhakar.com/color-thief/">Read more about it on my blog</a> or <a href="https://github.com/lokesh/color-thief">get the code on Github</a></p>
</section>
<section class="examples" id="examples">
<h2>Examples</h2>
<section id="examples" class="examples">
<header>
<h2 class="section-header">Examples</h2>
</header>
</section>
<sectcion class="drag-and-drop" id="dragDrop">
<h2>Try it yourself</h2>
<div id="dropZone" class="dropZone">
<section id="drag-drop" class="drag-drop">
<header>
<h2 class="section-header">Try it yourself</h2>
</header>
<div id="drop-zone" class="drop-zone">
<div class="drop-zone-label default-label">Drag an image here</div>
<div class="drop-zone-label dragging-label">Drop it here!</div>
</div>
<div id="draggedImages"></div>
<div id="dragged-images" class="dragged-images"></div>
</div>
</div> <!--! end of #container -->
</div>
<script>window.jQuery || document.write('<script src="js/libs/jquery-1.8.3.min.js"><\/script>')</script>
<script src="js/libs/jquery.lettering.js"></script>
<script src="js/libs/mustache.js"></script>
<script src="js/libs/quantize.js"></script>
<script src="js/color-thief.js"></script>
<!-- Using Mustache for templating -->
<!-- Mustache templates -->
<script id='image-section-template' type='text/x-mustache'>
{{#images}}
<div class="image-section {{class}} ">
<div class="image-section {{class}}">
<div class="image-wrap">
<button class="run-functions-button">Click</button>
<img class="target-image" src="{{file}}" data-colorcount="{{colorCount}}" />
<img class="target-image" src="{{file}}" />
</div>
<div class="color-thief-output-template"></div>
<div class="color-thief-output"></div>
</div>
{{/images}}
</script>
<script id='color-thief-output-template' type='text/x-mustache'>
<script id="color-thief-output-template" type="text/x-mustache">
<div class="function get-color">
<div class="function-details">
<h3 class="function-title">Dominant Color</h3>
<div class="function-code">colorThief.getColor()</div>
<div class="function-execution-time">20ms</div>
<div class="swatches">
<div class="swatch" style="background-color: rgb({{color.0}}, {{color.1}}, {{color.2}})"></div>
</div>
<div class="function-output">
<div class="swatches"></div>
<div class="function-code">
<code>colorThief.getColor(image):{{elapsedTimeForGetColor}}ms</code>
</div>
</div>
<div class="function get-palette">
<div class="function-details">
<h3 class="function-title">Palette</h3>
<div class="function-code">colorThief.getPalette()</div>
<div class="function-execution-time">20ms</div>
</div>
<div class="function-output">
<div class="swatches"></div>
<div class="swatches">
{{#palette}}
<div class="swatch" style="background-color: rgb({{0}}, {{1}}, {{2}})"></div>
{{/palette}}
</div>
</div>
<div class="function-code">
<code>colorThief.getPalette(image):{{elapsedTimeForGetPalette}}ms</code>
</div>
</div>
</script>
<script src="demo.js"></script>
</body>
</html>

476
js/color-thief.js
View File

@@ -117,3 +117,479 @@ ColorThief.prototype.getPalette = function(sourceImage, colorCount) {
return palette;
}
/*!
* quantize.js Copyright 2008 Nick Rabinowitz.
* Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
*/
// fill out a couple protovis dependencies
/*!
* Block below copied from Protovis: http://mbostock.github.com/protovis/
* Copyright 2010 Stanford Visualization Group
* Licensed under the BSD License: http://www.opensource.org/licenses/bsd-license.php
*/
if (!pv) {
var pv = {
map: function(array, f) {
var o = {};
return f
? array.map(function(d, i) { o.index = i; return f.call(o, d); })
: array.slice();
},
naturalOrder: function(a, b) {
return (a < b) ? -1 : ((a > b) ? 1 : 0);
},
sum: function(array, f) {
var o = {};
return array.reduce(f
? function(p, d, i) { o.index = i; return p + f.call(o, d); }
: function(p, d) { return p + d; }, 0);
},
max: function(array, f) {
return Math.max.apply(null, f ? pv.map(array, f) : array);
}
}
}
/**
* Basic Javascript port of the MMCQ (modified median cut quantization)
* algorithm from the Leptonica library (http://www.leptonica.com/).
* Returns a color map you can use to map original pixels to the reduced
* palette. Still a work in progress.
*
* @author Nick Rabinowitz
* @example
// array of pixels as [R,G,B] arrays
var myPixels = [[190,197,190], [202,204,200], [207,214,210], [211,214,211], [205,207,207]
// etc
];
var maxColors = 4;
var cmap = MMCQ.quantize(myPixels, maxColors);
var newPalette = cmap.palette();
var newPixels = myPixels.map(function(p) {
return cmap.map(p);
});
*/
var MMCQ = (function() {
// private constants
var sigbits = 5,
rshift = 8 - sigbits,
maxIterations = 1000,
fractByPopulations = 0.75;
// get reduced-space color index for a pixel
function getColorIndex(r, g, b) {
return (r << (2 * sigbits)) + (g << sigbits) + b;
}
// Simple priority queue
function PQueue(comparator) {
var contents = [],
sorted = false;
function sort() {
contents.sort(comparator);
sorted = true;
}
return {
push: function(o) {
contents.push(o);
sorted = false;
},
peek: function(index) {
if (!sorted) sort();
if (index===undefined) index = contents.length - 1;
return contents[index];
},
pop: function() {
if (!sorted) sort();
return contents.pop();
},
size: function() {
return contents.length;
},
map: function(f) {
return contents.map(f);
},
debug: function() {
if (!sorted) sort();
return contents;
}
};
}
// 3d color space box
function VBox(r1, r2, g1, g2, b1, b2, histo) {
var vbox = this;
vbox.r1 = r1;
vbox.r2 = r2;
vbox.g1 = g1;
vbox.g2 = g2;
vbox.b1 = b1;
vbox.b2 = b2;
vbox.histo = histo;
}
VBox.prototype = {
volume: function(force) {
var vbox = this;
if (!vbox._volume || force) {
vbox._volume = ((vbox.r2 - vbox.r1 + 1) * (vbox.g2 - vbox.g1 + 1) * (vbox.b2 - vbox.b1 + 1));
}
return vbox._volume;
},
count: function(force) {
var vbox = this,
histo = vbox.histo;
if (!vbox._count_set || force) {
var npix = 0,
i, j, k;
for (i = vbox.r1; i <= vbox.r2; i++) {
for (j = vbox.g1; j <= vbox.g2; j++) {
for (k = vbox.b1; k <= vbox.b2; k++) {
index = getColorIndex(i,j,k);
npix += (histo[index] || 0);
}
}
}
vbox._count = npix;
vbox._count_set = true;
}
return vbox._count;
},
copy: function() {
var vbox = this;
return new VBox(vbox.r1, vbox.r2, vbox.g1, vbox.g2, vbox.b1, vbox.b2, vbox.histo);
},
avg: function(force) {
var vbox = this,
histo = vbox.histo;
if (!vbox._avg || force) {
var ntot = 0,
mult = 1 << (8 - sigbits),
rsum = 0,
gsum = 0,
bsum = 0,
hval,
i, j, k, histoindex;
for (i = vbox.r1; i <= vbox.r2; i++) {
for (j = vbox.g1; j <= vbox.g2; j++) {
for (k = vbox.b1; k <= vbox.b2; k++) {
histoindex = getColorIndex(i,j,k);
hval = histo[histoindex] || 0;
ntot += hval;
rsum += (hval * (i + 0.5) * mult);
gsum += (hval * (j + 0.5) * mult);
bsum += (hval * (k + 0.5) * mult);
}
}
}
if (ntot) {
vbox._avg = [~~(rsum/ntot), ~~(gsum/ntot), ~~(bsum/ntot)];
} else {
// console.log('empty box');
vbox._avg = [
~~(mult * (vbox.r1 + vbox.r2 + 1) / 2),
~~(mult * (vbox.g1 + vbox.g2 + 1) / 2),
~~(mult * (vbox.b1 + vbox.b2 + 1) / 2)
];
}
}
return vbox._avg;
},
contains: function(pixel) {
var vbox = this,
rval = pixel[0] >> rshift;
gval = pixel[1] >> rshift;
bval = pixel[2] >> rshift;
return (rval >= vbox.r1 && rval <= vbox.r2 &&
gval >= vbox.g1 && rval <= vbox.g2 &&
bval >= vbox.b1 && rval <= vbox.b2);
}
};
// Color map
function CMap() {
this.vboxes = new PQueue(function(a,b) {
return pv.naturalOrder(
a.vbox.count()*a.vbox.volume(),
b.vbox.count()*b.vbox.volume()
)
});;
}
CMap.prototype = {
push: function(vbox) {
this.vboxes.push({
vbox: vbox,
color: vbox.avg()
});
},
palette: function() {
return this.vboxes.map(function(vb) { return vb.color });
},
size: function() {
return this.vboxes.size();
},
map: function(color) {
var vboxes = this.vboxes;
for (var i=0; i<vboxes.size(); i++) {
if (vboxes.peek(i).vbox.contains(color)) {
return vboxes.peek(i).color;
}
}
return this.nearest(color);
},
nearest: function(color) {
var vboxes = this.vboxes,
d1, d2, pColor;
for (var i=0; i<vboxes.size(); i++) {
d2 = Math.sqrt(
Math.pow(color[0] - vboxes.peek(i).color[0], 2) +
Math.pow(color[1] - vboxes.peek(i).color[1], 2) +
Math.pow(color[1] - vboxes.peek(i).color[1], 2)
);
if (d2 < d1 || d1 === undefined) {
d1 = d2;
pColor = vboxes.peek(i).color;
}
}
return pColor;
},
forcebw: function() {
// XXX: won't work yet
var vboxes = this.vboxes;
vboxes.sort(function(a,b) { return pv.naturalOrder(pv.sum(a.color), pv.sum(b.color) )});
// force darkest color to black if everything < 5
var lowest = vboxes[0].color;
if (lowest[0] < 5 && lowest[1] < 5 && lowest[2] < 5)
vboxes[0].color = [0,0,0];
// force lightest color to white if everything > 251
var idx = vboxes.length-1,
highest = vboxes[idx].color;
if (highest[0] > 251 && highest[1] > 251 && highest[2] > 251)
vboxes[idx].color = [255,255,255];
}
};
// histo (1-d array, giving the number of pixels in
// each quantized region of color space), or null on error
function getHisto(pixels) {
var histosize = 1 << (3 * sigbits),
histo = new Array(histosize),
index, rval, gval, bval;
pixels.forEach(function(pixel) {
rval = pixel[0] >> rshift;
gval = pixel[1] >> rshift;
bval = pixel[2] >> rshift;
index = getColorIndex(rval, gval, bval);
histo[index] = (histo[index] || 0) + 1;
});
return histo;
}
function vboxFromPixels(pixels, histo) {
var rmin=1000000, rmax=0,
gmin=1000000, gmax=0,
bmin=1000000, bmax=0,
rval, gval, bval;
// find min/max
pixels.forEach(function(pixel) {
rval = pixel[0] >> rshift;
gval = pixel[1] >> rshift;
bval = pixel[2] >> rshift;
if (rval < rmin) rmin = rval;
else if (rval > rmax) rmax = rval;
if (gval < gmin) gmin = gval;
else if (gval > gmax) gmax = gval;
if (bval < bmin) bmin = bval;
else if (bval > bmax) bmax = bval;
});
return new VBox(rmin, rmax, gmin, gmax, bmin, bmax, histo);
}
function medianCutApply(histo, vbox) {
if (!vbox.count()) return;
var rw = vbox.r2 - vbox.r1 + 1,
gw = vbox.g2 - vbox.g1 + 1,
bw = vbox.b2 - vbox.b1 + 1,
maxw = pv.max([rw, gw, bw]);
// only one pixel, no split
if (vbox.count() == 1) {
return [vbox.copy()]
}
/* Find the partial sum arrays along the selected axis. */
var total = 0,
partialsum = [],
lookaheadsum = [],
i, j, k, sum, index;
if (maxw == rw) {
for (i = vbox.r1; i <= vbox.r2; i++) {
sum = 0;
for (j = vbox.g1; j <= vbox.g2; j++) {
for (k = vbox.b1; k <= vbox.b2; k++) {
index = getColorIndex(i,j,k);
sum += (histo[index] || 0);
}
}
total += sum;
partialsum[i] = total;
}
}
else if (maxw == gw) {
for (i = vbox.g1; i <= vbox.g2; i++) {
sum = 0;
for (j = vbox.r1; j <= vbox.r2; j++) {
for (k = vbox.b1; k <= vbox.b2; k++) {
index = getColorIndex(j,i,k);
sum += (histo[index] || 0);
}
}
total += sum;
partialsum[i] = total;
}
}
else { /* maxw == bw */
for (i = vbox.b1; i <= vbox.b2; i++) {
sum = 0;
for (j = vbox.r1; j <= vbox.r2; j++) {
for (k = vbox.g1; k <= vbox.g2; k++) {
index = getColorIndex(j,k,i);
sum += (histo[index] || 0);
}
}
total += sum;
partialsum[i] = total;
}
}
partialsum.forEach(function(d,i) {
lookaheadsum[i] = total-d
});
function doCut(color) {
var dim1 = color + '1',
dim2 = color + '2',
left, right, vbox1, vbox2, d2, count2=0;
for (i = vbox[dim1]; i <= vbox[dim2]; i++) {
if (partialsum[i] > total / 2) {
vbox1 = vbox.copy();
vbox2 = vbox.copy();
left = i - vbox[dim1];
right = vbox[dim2] - i;
if (left <= right)
d2 = Math.min(vbox[dim2] - 1, ~~(i + right / 2));
else d2 = Math.max(vbox[dim1], ~~(i - 1 - left / 2));
// avoid 0-count boxes
while (!partialsum[d2]) d2++;
count2 = lookaheadsum[d2];
while (!count2 && partialsum[d2-1]) count2 = lookaheadsum[--d2];
// set dimensions
vbox1[dim2] = d2;
vbox2[dim1] = vbox1[dim2] + 1;
// console.log('vbox counts:', vbox.count(), vbox1.count(), vbox2.count());
return [vbox1, vbox2];
}
}
}
// determine the cut planes
return maxw == rw ? doCut('r') :
maxw == gw ? doCut('g') :
doCut('b');
}
function quantize(pixels, maxcolors) {
// short-circuit
if (!pixels.length || maxcolors < 2 || maxcolors > 256) {
// console.log('wrong number of maxcolors');
return false;
}
// XXX: check color content and convert to grayscale if insufficient
var histo = getHisto(pixels),
histosize = 1 << (3 * sigbits);
// check that we aren't below maxcolors already
var nColors = 0;
histo.forEach(function() { nColors++ });
if (nColors <= maxcolors) {
// XXX: generate the new colors from the histo and return
}
// get the beginning vbox from the colors
var vbox = vboxFromPixels(pixels, histo),
pq = new PQueue(function(a,b) { return pv.naturalOrder(a.count(), b.count()) });
pq.push(vbox);
// inner function to do the iteration
function iter(lh, target) {
var ncolors = 1,
niters = 0,
vbox;
while (niters < maxIterations) {
vbox = lh.pop();
if (!vbox.count()) { /* just put it back */
lh.push(vbox);
niters++;
continue;
}
// do the cut
var vboxes = medianCutApply(histo, vbox),
vbox1 = vboxes[0],
vbox2 = vboxes[1];
if (!vbox1) {
// console.log("vbox1 not defined; shouldn't happen!");
return;
}
lh.push(vbox1);
if (vbox2) { /* vbox2 can be null */
lh.push(vbox2);
ncolors++;
}
if (ncolors >= target) return;
if (niters++ > maxIterations) {
// console.log("infinite loop; perhaps too few pixels!");
return;
}
}
}
// first set of colors, sorted by population
iter(pq, fractByPopulations * maxcolors);
// Re-sort by the product of pixel occupancy times the size in color space.
var pq2 = new PQueue(function(a,b) {
return pv.naturalOrder(a.count()*a.volume(), b.count()*b.volume())
});
while (pq.size()) {
pq2.push(pq.pop());
}
// next set - generate the median cuts using the (npix * vol) sorting.
iter(pq2, maxcolors - pq2.size());
// calculate the actual colors
var cmap = new CMap();
while (pq2.size()) {
cmap.push(pq2.pop());
}
return cmap;
}
return {
quantize: quantize
}
})();

118
sass/app.sass
View File

@@ -17,6 +17,7 @@ $linkColor: $green
$fontSize: 18px
$columnWidth: 600px
$radius: 4px
// $codeColor: #eff
// $inputColor: #555
@@ -27,7 +28,7 @@ $columnWidth: 600px
body, input, textarea
margin: 40px
margin: 40px 40px 80px 40px
color: $color
background: $bgColor
font-size: $fontSize
@@ -37,28 +38,38 @@ h1, h2, h3, h4, h5, h6
color: white
line-height: 1.2em
font-weight: 500
margin-bottom: 0.5em
h1
font-size: 72px
line-height: 1em
h2
font-size: 36px
line-height: 1.2em
margin-bottom: 0.2em
h3
font-size: 16px
letter-spacing: 0.1em
margin-bottom: 0.2em
text-transform: uppercase
h4
font-size: 20px
margin-bottom: 1.25em
margin-bottom: 1em
p
line-height: 1.5em
margin-bottom: 1.25em
line-height: 1.4em
margin-bottom: 1em
strong
font-weight: bold
code,
kbd
font: $fontSize - 6 "Andale Mono", "DejaVu Sans Mono", monospace
color: darken($color, 15%)
/* Links */
a
color: $linkColor
@@ -66,18 +77,31 @@ a
&:hover
color: lighten($linkColor, 30%)
/* Images */
img
display: block
/* -- Layout ------------------------------------------------------------------ */
.wrapper
text-align: center
max-width: $columnWidth
margin: 0 auto
.section-header
text-align: center
.intro
text-align: center
margin-bottom: 2em
.description
max-width: 450px
margin-right: auto
margin-left: auto
.read-more-links
font-size: $fontSize - 2
.image-section
margin-bottom: 80px
background: darken($bgColor, 10%)
@@ -86,8 +110,7 @@ a
background: #444
// background: url(../img/dark_checkered_bg.png)
.target-image
width: 100%
/* -- Image examples ------------------------------------------------------------------ */
.run-functions-button
position: absolute
@@ -99,54 +122,50 @@ a
margin-left: -50px
border: none
+border-radius(50%)
color: darken($yellow, 50%)
color: darken($yellow, 55%)
background-color: $yellow
font-size: 24px
font-weight: 500
cursor: pointer
&:hover
background-color: lighten($yellow, 10%)
color: darken($yellow, 45%)
color: darken($yellow, 60%)
&:active
+scale(0.9)
&.hide
+transition(all .4s)
top: 100%
+scale(0)
.target-image
width: 100%
.color-thief-output
margin-top: 20px
display: none
padding: 20px
background-color: #eee
.function-title
color: $bgColor
font-weight: bold
.function
clear: left
margin-bottom: 10px
.swatches
+pie-clearfix
.swatch
width: 60px
height: 30px
margin-right: 2px
margin: 0 2px 2px 0
background: #dddddd
float: left
+transition(scale .5s)
&:hover
+transition(none)
+scale(1.1, 1.1)
+box-shadow( 0 1px 10px black)
/* Hardcoding the offset for the FB icon example */
.fbIcon .imageWrap .targetImage
+border-radius(0)
position: relative
top: 142px
left: 192px
canvas
display: none
/* -- Animated logo ------------------------------------------------------------------ */
h1
font-size: 72px
line-height: 0.5em
margin-bottom: 0.3em
small
font-size: 20px
.logo
.char1
+transition( color .1s)
.char2
@@ -204,16 +223,37 @@ h1
/* -- Drag and drop ------------------------------------------------------------------ */
.drag-and-drop
.drag-drop
display: none
.dropZone
height: 200px
margin-bottom: 60px
background: url("../img/drag_placeholder.png")
.drop-zone
height: 400px
margin-bottom: 80px
background: url("../img/dark_checkered_bg.png")
&.dragging
+box-shadow(inset 0 1px 10px #09A1EC)
.droppedImage
+box-shadow(inset 0 0 0 4px $linkColor)
.default-label
display: none
.dragging-label
display: block
.drop-zone-label
position: relative
top: 170px
padding: 10px
margin: 0 100px
border: 4px solid $yellow
+border-radius($radius)
color: $yellow
font-size: 24px
text-align: center
pointer-events: none
.dragging-label
display: none
.dropped-image
.run-functions-button
display: none
.targetImage
// width: 100%