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300 lines
9.5 KiB
JavaScript
300 lines
9.5 KiB
JavaScript
;(function($, Colors, undefined){
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'use strict';
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var $document = $(document),
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_instance,
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_colorPicker,
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_color,
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_options,
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_selector = '',
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_$trigger,
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_$UI, _$xy_slider, _$xy_cursor, _$z_cursor , _$alpha , _$alpha_cursor,
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_pointermove = 'touchmove mousemove pointermove',
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_pointerup = 'touchend mouseup pointerup',
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_GPU = false,
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_animate = window.requestAnimationFrame ||
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window.webkitRequestAnimationFrame || function(cb){cb()},
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_html = '<div class="cp-color-picker"><div class="cp-z-slider"><div c' +
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'lass="cp-z-cursor"></div></div><div class="cp-xy-slider"><div cl' +
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'ass="cp-white"></div><div class="cp-xy-cursor"></div></div><div ' +
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'class="cp-alpha"><div class="cp-alpha-cursor"></div></div></div>',
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// 'grunt-contrib-uglify' puts all this back to one single string...
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_css = '.cp-color-picker{position:absolute;overflow:hidden;padding:6p' +
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'x 6px 0;background-color:#444;color:#bbb;font-family:Arial,Helve' +
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'tica,sans-serif;font-size:12px;font-weight:400;cursor:default;bo' +
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'rder-radius:5px}.cp-color-picker>div{position:relative;overflow:' +
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'hidden}.cp-xy-slider{float:left;height:128px;width:128px;margin-' +
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'bottom:6px;background:linear-gradient(to right,#FFF,rgba(255,255' +
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',255,0))}.cp-white{height:100%;width:100%;background:linear-grad' +
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'ient(rgba(0,0,0,0),#000)}.cp-xy-cursor{position:absolute;top:0;w' +
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'idth:10px;height:10px;margin:-5px;border:1px solid #fff;border-r' +
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'adius:100%;box-sizing:border-box}.cp-z-slider{float:right;margin' +
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'-left:6px;height:128px;width:20px;background:linear-gradient(red' +
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' 0,#f0f 17%,#00f 33%,#0ff 50%,#0f0 67%,#ff0 83%,red 100%)}.cp-z-' +
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'cursor{position:absolute;margin-top:-4px;width:100%;border:4px s' +
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'olid #fff;border-color:transparent #fff;box-sizing:border-box}.c' +
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'p-alpha{clear:both;width:100%;height:16px;margin:6px 0;backgroun' +
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'd:linear-gradient(to right,#444),rgba(0,0,0,0))}.cp-alpha-cursor' +
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'{position:absolute;margin-left:-4px;height:100%;border:4px solid' +
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' #fff;border-color:#fff transparent;box-sizing:border-box}',
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ColorPicker = function(options) {
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_color = this.color = new Colors(options);
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_options = _color.options;
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};
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ColorPicker.prototype = {
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render: preRender,
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toggle: toggle
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}
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function extractValue(elm) {
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return elm.value || elm.getAttribute('value') ||
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$(elm).css('background-color') || '#fff';
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}
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function resolveEventType(event) {
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return event.originalEvent.touches ?
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event.originalEvent.touches[0] : event;
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}
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function findElement($elm) {
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return $($elm.find(_options.doRender)[0] || $elm[0]);
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}
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function toggle(event) {
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var $this = $(this),
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position,
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$window = $(window);
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if (event) {
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position = $this.offset();
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_$trigger = findElement($this);
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(_$UI || build()).show(_options.animationSpeed, function() {
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_$alpha._width = _$alpha.width();
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_$xy_slider._width = _$xy_slider.width();
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_$xy_slider._height = _$xy_slider.height();
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_color.setColor(extractValue(_$trigger[0]));
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preRender(true);
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}).css({
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'left': !(_$UI[0]._right = position.left + _$UI[0]._width >
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$window.scrollLeft() + $window.width() ? 4 : '') ?
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position.left : '',
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'top': !(_$UI[0]._bottom = position.top + $this.outerHeight() +
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_$UI[0]._height > $window.scrollTop() + $window.height() ?
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-$window.scrollTop() + 4 : '') ?
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position.top + $this.outerHeight() : '',
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'right': _$UI[0]._right,
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'bottom': _$UI[0]._bottom
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});
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} else {
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$(_$UI).hide(_options.animationSpeed, function() {
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_$trigger.blur();
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preRender(false);
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});
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}
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};
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function build() {
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$('head').append('<style type="text/css">' +
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(_options.css || _css) + (_options.cssAddon || '') + '</style>');
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return _$UI = $(_html).css({'margin': _options.margin}).
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appendTo('body').
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show(0, function() {
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_GPU = _options.GPU && $(this).css('perspective') === '';
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_$xy_slider = $('.cp-xy-slider', this);
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_$xy_cursor = $('.cp-xy-cursor', this);
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_$z_cursor = $('.cp-z-cursor', this);
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_$alpha = $('.cp-alpha', this).toggle(!!_options.opacity);
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_$alpha_cursor = $('.cp-alpha-cursor', this);
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_options.buidCallback.call(_colorPicker, $(this));
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this._width = this.offsetWidth;
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this._height = this.offsetHeight;
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}).hide().
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on('touchstart mousedown pointerdown',
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'.cp-xy-slider,.cp-z-slider,.cp-alpha', pointerdown)
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;
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}
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function pointerdown(e) {
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var action = this.className.
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replace(/cp-(.*?)(?:\s*|$)/, '$1').replace('-', '_');
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e.preventDefault();
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_$trigger._offset = $(this).offset();
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(action = action === 'xy_slider' ? xy_slider :
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action === 'z_slider' ? z_slider : alpha)(e);
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$document.on(_pointerup, pointerup).on(_pointermove, action);
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}
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function pointerup(e) {
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$document.off(_pointermove).off(_pointerup);
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}
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function xy_slider(event) {
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var e = resolveEventType(event),
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x = e.pageX - _$trigger._offset.left,
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y = e.pageY - _$trigger._offset.top;
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_color.setColor({
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s: x / _$xy_slider._width * 100,
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v: 100 - (y / _$xy_slider._height * 100)
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}, 'hsv');
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preRender();
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}
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function z_slider(event) {
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var z = resolveEventType(event).pageY - _$trigger._offset.top,
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hsv = _color.colors.hsv;
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_color.setColor({h: 360 - (z / _$xy_slider._height * 360)}, 'hsv');
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preRender();
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}
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function alpha(event) {
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var x = resolveEventType(event).pageX - _$trigger._offset.left,
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alpha = x / _$alpha._width;
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_color.setColor({}, 'rgb', alpha > 1 ? 1 : alpha < 0 ? 0 : alpha);
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preRender();
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}
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function preRender(toggled) {
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var colors = _color.colors,
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hueRGB = colors.hueRGB,
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RGB = colors.RND.rgb,
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HSL = colors.RND.hsl,
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dark = '#222',
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light = '#ddd',
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colorMode = _$trigger.data('colorMode'),
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isAlpha = colors.alpha !== 1,
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alpha = Math.round(colors.alpha * 100) / 100,
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RGBInnerText = RGB.r + ', ' + RGB.g + ', ' + RGB.b,
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text = (colorMode === 'HEX' && !isAlpha ? '#' + colors.HEX :
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colorMode === 'rgb' || (colorMode === 'HEX' && isAlpha) ?
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(!isAlpha ? 'rgb(' + RGBInnerText + ')' :
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'rgba(' + RGBInnerText + ', ' + alpha + ')') :
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('hsl' + (isAlpha ? 'a(' : '(') + HSL.h + ', ' + HSL.s + '%, ' +
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HSL.l + '%' + (isAlpha ? ', ' + alpha : '') + ')')),
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HUEContrast = colors.HUELuminance > 0.22 ? dark : light,
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alphaContrast = colors.rgbaMixBlack.luminance > 0.22 ? dark : light,
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h = (1 - colors.hsv.h) * _$xy_slider._height,
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s = colors.hsv.s * _$xy_slider._width,
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v = (1 - colors.hsv.v) * _$xy_slider._height,
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a = alpha * _$alpha._width,
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t3d = _GPU ? 'translate3d' : '';
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_$xy_slider._css = {
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backgroundColor: 'rgb(' +
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hueRGB.r + ',' + hueRGB.g + ',' + hueRGB.b + ')'};
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_$xy_cursor._css = {
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transform: t3d + '(' + s + 'px, ' + v + 'px, 0)',
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left: !_GPU ? s : '',
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top: !_GPU ? v : '',
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borderColor : colors.RGBLuminance > 0.22 ? dark : light
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};
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_$z_cursor._css = {
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transform: t3d + '(0, ' + h + 'px, 0)',
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top: !_GPU ? h : '',
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borderColor : 'transparent ' + HUEContrast
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};
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_$alpha._css = {backgroundColor: 'rgb(' + RGBInnerText + ')'};
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_$alpha_cursor._css = {
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transform: t3d + '(' + a + 'px, 0, 0)',
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left: !_GPU ? a : '',
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borderColor : alphaContrast + ' transparent'
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};
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_$trigger._css = {
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backgroundColor : text,
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color: colors.rgbaMixBGMixCustom.luminance > 0.22 ? dark : light
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};
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_$trigger.text = _$trigger.val() !== text ? text : '';
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toggled !== undefined ? render(toggled) : _animate(render);
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}
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// As _animate() is actually requestAnimationFrame(), render() gets called
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// decoupled from any pointer action (whenever the browser decides to do
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// so) as an event. preRender() is coupled to toggle() and all pointermove
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// actions; that's where all the calculations happen. render() can now be
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// called without extra calculations which results in faster rendering.
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function render(toggled) {
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_$xy_slider.css(_$xy_slider._css);
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_$xy_cursor.css(_$xy_cursor._css);
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_$z_cursor.css(_$z_cursor._css);
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_$alpha.css(_$alpha._css);
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_$alpha_cursor.css(_$alpha_cursor._css);
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_options.doRender && _$trigger.css(_$trigger._css);
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_$trigger.text && _$trigger.val(_$trigger.text);
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_options.renderCallback.call(
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_colorPicker,
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_$trigger,
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typeof toggled === 'boolean' ? toggled : undefined
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);
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}
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$.fn.colorPicker = function(options) {
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var noop = function(){};
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options = $.extend({
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animationSpeed: 150,
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GPU: true,
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doRender: true,
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customBG: '#FFF',
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opacity: true,
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renderCallback: noop,
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buidCallback: noop,
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body: document.body
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// css: '',
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// cssAddon: '',
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// margin: '',
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// preventFocus: false
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}, options);
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_instance = _instance ? _instance.add(this) : this;
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_instance.colorPicker = _colorPicker ||
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(_colorPicker = new ColorPicker(options));
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_selector += (_selector ? ', ' : '') + this.selector;
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$(options.body).off('.a').
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on('touchstart.a mousedown.a pointerdown.a', function(e) {
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var $target = $(e.target);
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if ($.inArray($target.closest(_selector)[0],
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_instance) === -1 &&
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!$target.closest(_$UI).length) {
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toggle();
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}
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}).
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on('focus.a click.a', _selector, toggle).
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on('change.a', _selector, function() {
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_color.setColor(this.value);
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_instance.colorPicker.render();
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});
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return this.each(function() {
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var value = extractValue(this),
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mode = value.split('('),
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$elm = findElement($(this));
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$elm.data('colorMode', mode[1] ? mode[0].substr(0, 3) : 'HEX').
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attr('readonly', _options.preventFocus);
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options.doRender && $elm.
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css({'background-color': value,
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'color': function() {
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return _color.setColor(value).
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rgbaMixBGMixCustom.luminance > 0.22 ? '#222' : '#ddd'
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}
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});
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});
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};
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})(window.jQuery, Colors); |