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* jQuery MiniColors: A tiny color picker built on jQuery

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* Copyright: Cory LaViska for A Beautiful Site, LLC

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* Contributions and bug reports: https://github.com/claviska/jquery-minicolors

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* @license: http://opensource.org/licenses/MIT

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if(jQuery) (function($) {

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// Defaults

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$.minicolors = {

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defaults: {

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animationSpeed: 50,

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animationEasing: 'swing',

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change: null,

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changeDelay: 0,

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control: 'hue',

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dataUris: true,

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defaultValue: '',

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hide: null,

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hideSpeed: 100,

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inline: false,

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letterCase: 'lowercase',

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opacity: false,

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position: 'bottom left',

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show: null,

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showSpeed: 100,

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theme: 'default'

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}

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};

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// Public methods

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$.extend($.fn, {

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minicolors: function(method, data) {

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switch(method) {

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// Destroy the control

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case 'destroy':

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$(this).each( function() {

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destroy($(this));

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});

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return $(this);

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// Hide the color picker

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case 'hide':

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hide();

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return $(this);

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// Get/set opacity

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case 'opacity':

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// Getter

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if( data === undefined ) {

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// Getter

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return $(this).attr('data-opacity');

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} else {

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// Setter

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$(this).each( function() {

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updateFromInput($(this).attr('data-opacity', data));

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});

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}

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return $(this);

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// Get an RGB(A) object based on the current color/opacity

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case 'rgbObject':

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return rgbObject($(this), method === 'rgbaObject');

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// Get an RGB(A) string based on the current color/opacity

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case 'rgbString':

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case 'rgbaString':

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return rgbString($(this), method === 'rgbaString');

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// Get/set settings on the fly

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case 'settings':

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if( data === undefined ) {

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return $(this).data('minicolors-settings');

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} else {

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// Setter

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$(this).each( function() {

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var settings = $(this).data('minicolors-settings') || {};

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destroy($(this));

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$(this).minicolors($.extend(true, settings, data));

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});

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}

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return $(this);

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// Show the color picker

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case 'show':

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show( $(this).eq(0) );

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return $(this);

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// Get/set the hex color value

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case 'value':

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if( data === undefined ) {

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// Getter

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return $(this).val();

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} else {

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// Setter

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$(this).each( function() {

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updateFromInput($(this).val(data));

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});

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}

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return $(this);

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// Initializes the control

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default:

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if( method !== 'create' ) data = method;

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$(this).each( function() {

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init($(this), data);

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});

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return $(this);

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}

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}

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});

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// Initialize input elements

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function init(input, settings) {

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var minicolors = $('<div class="minicolors" />'),

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defaults = $.minicolors.defaults;

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// Do nothing if already initialized

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if( input.data('minicolors-initialized') ) return;

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// Handle settings

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settings = $.extend(true, {}, defaults, settings);

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// The wrapper

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minicolors

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.addClass('minicolors-theme-' + settings.theme)

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.toggleClass('minicolors-with-opacity', settings.opacity)

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.toggleClass('minicolors-no-data-uris', settings.dataUris !== true);

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// Custom positioning

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if( settings.position !== undefined ) {

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$.each(settings.position.split(' '), function() {

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minicolors.addClass('minicolors-position-' + this);

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});

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}

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// The input

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input

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.addClass('minicolors-input')

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.data('minicolors-initialized', false)

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.data('minicolors-settings', settings)

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.prop('size', 7)

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.wrap(minicolors)

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.after(

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'<div class="minicolors-panel minicolors-slider-' + settings.control + '">' +

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'<div class="minicolors-slider minicolors-sprite">' +

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'<div class="minicolors-picker"></div>' +

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'</div>' +

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'<div class="minicolors-opacity-slider minicolors-sprite">' +

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'<div class="minicolors-picker"></div>' +

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'</div>' +

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'<div class="minicolors-grid minicolors-sprite">' +

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'<div class="minicolors-grid-inner"></div>' +

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'<div class="minicolors-picker"><div></div></div>' +

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'</div>' +

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'</div>'

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);

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// The swatch

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if( !settings.inline ) {

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input.after('<span class="minicolors-swatch minicolors-sprite"><span class="minicolors-swatch-color"></span></span>');

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input.next('.minicolors-swatch').on('click', function(event) {

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event.preventDefault();

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input.focus();

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});

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}

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// Prevent text selection in IE

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input.parent().find('.minicolors-panel').on('selectstart', function() { return false; }).end();

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// Inline controls

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if( settings.inline ) input.parent().addClass('minicolors-inline');

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updateFromInput(input, false);

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input.data('minicolors-initialized', true);

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}

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// Returns the input back to its original state

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function destroy(input) {

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var minicolors = input.parent();

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// Revert the input element

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input

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.removeData('minicolors-initialized')

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.removeData('minicolors-settings')

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.removeProp('size')

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.removeClass('minicolors-input');

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// Remove the wrap and destroy whatever remains

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minicolors.before(input).remove();

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}

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// Shows the specified dropdown panel

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function show(input) {

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var minicolors = input.parent(),

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panel = minicolors.find('.minicolors-panel'),

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settings = input.data('minicolors-settings');

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// Do nothing if uninitialized, disabled, inline, or already open

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if( !input.data('minicolors-initialized') ||

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input.prop('disabled') ||

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minicolors.hasClass('minicolors-inline') ||

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minicolors.hasClass('minicolors-focus')

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) return;

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hide();

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minicolors.addClass('minicolors-focus');

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panel

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.stop(true, true)

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.fadeIn(settings.showSpeed, function() {

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if( settings.show ) settings.show.call(input.get(0));

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});

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}

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// Hides all dropdown panels

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function hide() {

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$('.minicolors-focus').each( function() {

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var minicolors = $(this),

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input = minicolors.find('.minicolors-input'),

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panel = minicolors.find('.minicolors-panel'),

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settings = input.data('minicolors-settings');

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panel.fadeOut(settings.hideSpeed, function() {

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if( settings.hide ) settings.hide.call(input.get(0));

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minicolors.removeClass('minicolors-focus');

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});

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});

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}

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// Moves the selected picker

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function move(target, event, animate) {

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var input = target.parents('.minicolors').find('.minicolors-input'),

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settings = input.data('minicolors-settings'),

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picker = target.find('[class$=-picker]'),

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offsetX = target.offset().left,

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offsetY = target.offset().top,

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x = Math.round(event.pageX - offsetX),

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y = Math.round(event.pageY - offsetY),

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duration = animate ? settings.animationSpeed : 0,

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wx, wy, r, phi;

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// Touch support

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if( event.originalEvent.changedTouches ) {

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x = event.originalEvent.changedTouches[0].pageX - offsetX;

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y = event.originalEvent.changedTouches[0].pageY - offsetY;

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}

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// Constrain picker to its container

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if( x < 0 ) x = 0;

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if( y < 0 ) y = 0;

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if( x > target.width() ) x = target.width();

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if( y > target.height() ) y = target.height();

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// Constrain color wheel values to the wheel

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if( target.parent().is('.minicolors-slider-wheel') && picker.parent().is('.minicolors-grid') ) {

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wx = 75 - x;

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wy = 75 - y;

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r = Math.sqrt(wx * wx + wy * wy);

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phi = Math.atan2(wy, wx);

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if( phi < 0 ) phi += Math.PI * 2;

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if( r > 75 ) {

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r = 75;

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x = 75 - (75 * Math.cos(phi));

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y = 75 - (75 * Math.sin(phi));

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}

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x = Math.round(x);

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y = Math.round(y);

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}

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// Move the picker

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if( target.is('.minicolors-grid') ) {

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picker

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.stop(true)

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.animate({

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top: y + 'px',

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left: x + 'px'

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}, duration, settings.animationEasing, function() {

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updateFromControl(input, target);

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});

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} else {

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picker

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.stop(true)

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.animate({

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top: y + 'px'

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}, duration, settings.animationEasing, function() {

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updateFromControl(input, target);

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});

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}

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}

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// Sets the input based on the color picker values

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function updateFromControl(input, target) {

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function getCoords(picker, container) {

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var left, top;

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if( !picker.length || !container ) return null;

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left = picker.offset().left;

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top = picker.offset().top;

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return {

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x: left - container.offset().left + (picker.outerWidth() / 2),

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y: top - container.offset().top + (picker.outerHeight() / 2)

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};

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}

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var hue, saturation, brightness, x, y, r, phi,

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hex = input.val(),

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opacity = input.attr('data-opacity'),

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// Helpful references

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minicolors = input.parent(),

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settings = input.data('minicolors-settings'),

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swatch = minicolors.find('.minicolors-swatch'),

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// Panel objects

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grid = minicolors.find('.minicolors-grid'),

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slider = minicolors.find('.minicolors-slider'),

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opacitySlider = minicolors.find('.minicolors-opacity-slider'),

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// Picker objects

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gridPicker = grid.find('[class$=-picker]'),

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sliderPicker = slider.find('[class$=-picker]'),

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opacityPicker = opacitySlider.find('[class$=-picker]'),

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// Picker positions

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gridPos = getCoords(gridPicker, grid),

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sliderPos = getCoords(sliderPicker, slider),

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opacityPos = getCoords(opacityPicker, opacitySlider);

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// Handle colors

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if( target.is('.minicolors-grid, .minicolors-slider') ) {

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// Determine HSB values

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switch(settings.control) {

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case 'wheel':

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// Calculate hue, saturation, and brightness

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x = (grid.width() / 2) - gridPos.x;

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y = (grid.height() / 2) - gridPos.y;

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r = Math.sqrt(x * x + y * y);

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phi = Math.atan2(y, x);

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if( phi < 0 ) phi += Math.PI * 2;

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if( r > 75 ) {

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r = 75;

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gridPos.x = 69 - (75 * Math.cos(phi));

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gridPos.y = 69 - (75 * Math.sin(phi));

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}

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saturation = keepWithin(r / 0.75, 0, 100);

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hue = keepWithin(phi * 180 / Math.PI, 0, 360);

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brightness = keepWithin(100 - Math.floor(sliderPos.y * (100 / slider.height())), 0, 100);

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hex = hsb2hex({

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h: hue,

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s: saturation,

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b: brightness

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});

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// Update UI

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slider.css('backgroundColor', hsb2hex({ h: hue, s: saturation, b: 100 }));

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break;

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case 'saturation':

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// Calculate hue, saturation, and brightness

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hue = keepWithin(parseInt(gridPos.x * (360 / grid.width()), 10), 0, 360);

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saturation = keepWithin(100 - Math.floor(sliderPos.y * (100 / slider.height())), 0, 100);

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brightness = keepWithin(100 - Math.floor(gridPos.y * (100 / grid.height())), 0, 100);

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hex = hsb2hex({

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h: hue,

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s: saturation,

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b: brightness

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});

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// Update UI

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slider.css('backgroundColor', hsb2hex({ h: hue, s: 100, b: brightness }));

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minicolors.find('.minicolors-grid-inner').css('opacity', saturation / 100);

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break;

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case 'brightness':

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// Calculate hue, saturation, and brightness

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hue = keepWithin(parseInt(gridPos.x * (360 / grid.width()), 10), 0, 360);

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saturation = keepWithin(100 - Math.floor(gridPos.y * (100 / grid.height())), 0, 100);

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brightness = keepWithin(100 - Math.floor(sliderPos.y * (100 / slider.height())), 0, 100);

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hex = hsb2hex({

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h: hue,

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s: saturation,

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b: brightness

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});

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// Update UI

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slider.css('backgroundColor', hsb2hex({ h: hue, s: saturation, b: 100 }));

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minicolors.find('.minicolors-grid-inner').css('opacity', 1 - (brightness / 100));

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break;

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default:

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// Calculate hue, saturation, and brightness

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hue = keepWithin(360 - parseInt(sliderPos.y * (360 / slider.height()), 10), 0, 360);

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saturation = keepWithin(Math.floor(gridPos.x * (100 / grid.width())), 0, 100);

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brightness = keepWithin(100 - Math.floor(gridPos.y * (100 / grid.height())), 0, 100);

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hex = hsb2hex({

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h: hue,

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s: saturation,

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b: brightness

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});

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// Update UI

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grid.css('backgroundColor', hsb2hex({ h: hue, s: 100, b: 100 }));

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break;

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}

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// Adjust case

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input.val( convertCase(hex, settings.letterCase) );

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}

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// Handle opacity

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if( target.is('.minicolors-opacity-slider') ) {

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if( settings.opacity ) {

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opacity = parseFloat(1 - (opacityPos.y / opacitySlider.height())).toFixed(2);

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} else {

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opacity = 1;

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}

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if( settings.opacity ) input.attr('data-opacity', opacity);

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}

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// Set swatch color

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swatch.find('SPAN').css({

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backgroundColor: hex,

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opacity: opacity

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});

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// Handle change event

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doChange(input, hex, opacity);

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}

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// Sets the color picker values from the input

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function updateFromInput(input, preserveInputValue) {

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var hex,

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hsb,

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opacity,

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x, y, r, phi,

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// Helpful references

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minicolors = input.parent(),

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settings = input.data('minicolors-settings'),

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swatch = minicolors.find('.minicolors-swatch'),

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// Panel objects

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grid = minicolors.find('.minicolors-grid'),

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slider = minicolors.find('.minicolors-slider'),

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opacitySlider = minicolors.find('.minicolors-opacity-slider'),

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// Picker objects

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gridPicker = grid.find('[class$=-picker]'),

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sliderPicker = slider.find('[class$=-picker]'),

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opacityPicker = opacitySlider.find('[class$=-picker]');

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// Determine hex/HSB values

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hex = convertCase(parseHex(input.val(), true), settings.letterCase);

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if( !hex ){

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hex = convertCase(parseHex(settings.defaultValue, true), settings.letterCase);

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}

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hsb = hex2hsb(hex);

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[488] Fix | Delete

// Update input value

[489] Fix | Delete

if( !preserveInputValue ) input.val(hex);

[490] Fix | Delete

[491] Fix | Delete

// Determine opacity value

[492] Fix | Delete

if( settings.opacity ) {

[493] Fix | Delete

// Get from data-opacity attribute and keep within 0-1 range

[494] Fix | Delete

opacity = input.attr('data-opacity') === '' ? 1 : keepWithin(parseFloat(input.attr('data-opacity')).toFixed(2), 0, 1);

[495] Fix | Delete

if( isNaN(opacity) ) opacity = 1;

[496] Fix | Delete

input.attr('data-opacity', opacity);

[497] Fix | Delete

swatch.find('SPAN').css('opacity', opacity);

[498] Fix | Delete

[499] Fix | Delete