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Diffstat (limited to 'resources/jquery/jquery.colorUtil.js')
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1 files changed, 193 insertions, 0 deletions
diff --git a/resources/jquery/jquery.colorUtil.js b/resources/jquery/jquery.colorUtil.js new file mode 100644 index 00000000..1116aec6 --- /dev/null +++ b/resources/jquery/jquery.colorUtil.js @@ -0,0 +1,193 @@ +/** + * jQuery Color Utilities + * Written by Krinkle in 2011 + * Released under the MIT and GPL licenses. + * Mostly based on other plugins and functions (taken through JSLint and optimized a little). + * Sources cited locally. + */ +( function( $ ) { +$.colorUtil = { + + // Color Conversion function from highlightFade + // By Blair Mitchelmore + // http://jquery.offput.ca/highlightFade/ + // Parse strings looking for color tuples [255,255,255] + getRGB : function( color ) { + var result; + + // Check if we're already dealing with an array of colors + if ( color && color.constructor == Array && color.length == 3 ){ + return color; + } + + // Look for rgb(num,num,num) + if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(color)) { + return [parseInt(result[1],10), parseInt(result[2],10), parseInt(result[3],10)]; + } + + // Look for rgb(num%,num%,num%) + if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(color)) { + return [parseFloat(result[1],10)*2.55, parseFloat(result[2],10)*2.55, parseFloat(result[3])*2.55]; + } + + // Look for #a0b1c2 + if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(color)) { + return [parseInt(result[1],16), parseInt(result[2],16), parseInt(result[3],16)]; + } + + // Look for #fff + if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(color)) { + return [parseInt(result[1]+result[1],16), parseInt(result[2]+result[2],16), parseInt(result[3]+result[3],16)]; + } + + // Look for rgba(0, 0, 0, 0) == transparent in Safari 3 + if (result = /rgba\(0, 0, 0, 0\)/.exec(color)) { + return $.colorUtil.colors.transparent; + } + + // Otherwise, we're most likely dealing with a named color + return $.colorUtil.colors[$.trim(color).toLowerCase()]; + }, + + // Some named colors to work with + // From Interface by Stefan Petre + // http://interface.eyecon.ro/ + colors: { + aqua:[0,255,255], + azure:[240,255,255], + beige:[245,245,220], + black:[0,0,0], + blue:[0,0,255], + brown:[165,42,42], + cyan:[0,255,255], + darkblue:[0,0,139], + darkcyan:[0,139,139], + darkgrey:[169,169,169], + darkgreen:[0,100,0], + darkkhaki:[189,183,107], + darkmagenta:[139,0,139], + darkolivegreen:[85,107,47], + darkorange:[255,140,0], + darkorchid:[153,50,204], + darkred:[139,0,0], + darksalmon:[233,150,122], + darkviolet:[148,0,211], + fuchsia:[255,0,255], + gold:[255,215,0], + green:[0,128,0], + indigo:[75,0,130], + khaki:[240,230,140], + lightblue:[173,216,230], + lightcyan:[224,255,255], + lightgreen:[144,238,144], + lightgrey:[211,211,211], + lightpink:[255,182,193], + lightyellow:[255,255,224], + lime:[0,255,0], + magenta:[255,0,255], + maroon:[128,0,0], + navy:[0,0,128], + olive:[128,128,0], + orange:[255,165,0], + pink:[255,192,203], + purple:[128,0,128], + violet:[128,0,128], + red:[255,0,0], + silver:[192,192,192], + white:[255,255,255], + yellow:[255,255,0], + transparent: [255,255,255] + }, + /** + * http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript + * Converts an RGB color value to HSL. Conversion formula + * adapted from http://en.wikipedia.org/wiki/HSL_color_space. + * Assumes r, g, and b are contained in the set [0, 255] and + * returns h, s, and l in the set [0, 1]. + * + * @param Number R The red color value + * @param Number G The green color value + * @param Number B The blue color value + * @return Array The HSL representation + */ + rgbToHsl: function( R, G, B ) { + var r = R / 255, + g = G / 255, + b = B / 255; + var max = Math.max(r, g, b), min = Math.min(r, g, b); + var h, s, l = (max + min) / 2; + + if(max == min){ + h = s = 0; // achromatic + }else{ + var d = max - min; + s = l > 0.5 ? d / (2 - max - min) : d / (max + min); + switch(max){ + case r: h = (g - b) / d + (g < b ? 6 : 0); break; + case g: h = (b - r) / d + 2; break; + case b: h = (r - g) / d + 4; break; + } + h /= 6; + } + + return [h, s, l]; + }, + /** + * http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript + * Converts an HSL color value to RGB. Conversion formula + * adapted from http://en.wikipedia.org/wiki/HSL_color_space. + * Assumes h, s, and l are contained in the set [0, 1] and + * returns r, g, and b in the set [0, 255]. + * + * @param Number h The hue + * @param Number s The saturation + * @param Number l The lightness + * @return Array The RGB representation + */ + hslToRgb: function( h, s, l ) { + var r, g, b; + + if(s === 0){ + r = g = b = l; // achromatic + }else{ + var hue2rgb = function(p, q, t){ + if(t < 0){ t += 1; } + if(t > 1){ t -= 1; } + if(t < 1/6){ return p + (q - p) * 6 * t; } + if(t < 1/2){ return q; } + if(t < 2/3){ return p + (q - p) * (2/3 - t) * 6; } + return p; + }; + + var q = l < 0.5 ? l * (1 + s) : l + s - l * s; + var p = 2 * l - q; + r = hue2rgb(p, q, h + 1/3); + g = hue2rgb(p, q, h); + b = hue2rgb(p, q, h - 1/3); + } + + return [r * 255, g * 255, b * 255]; + }, + /** + * Get's a brighter or darker rgb() value string. + * + * @author Krinkle + * + * @example getCSSColorMod( 'red', +0.1 ) + * @example getCSSColorMod( 'rgb(200,50,50)', -0.2 ) + * + * @param Mixed currentColor current value in css + * @param Number mod wanted brightness modification between -1 and 1 + * @return String 'rgb(r,g,b)' + */ + getColorBrightness: function( currentColor, mod ) { + var rgbArr = $.colorUtil.getRGB( currentColor ), + hslArr = $.colorUtil.rgbToHsl(rgbArr[0], rgbArr[1], rgbArr[2] ); + rgbArr = $.colorUtil.hslToRgb(hslArr[0], hslArr[1], hslArr[2]+mod); + return 'rgb(' + + [parseInt( rgbArr[0], 10), parseInt( rgbArr[1], 10 ), parseInt( rgbArr[2], 10 )].join( ',' ) + + ')'; + } + +}; +} )( jQuery );
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