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1195 lines
40 KiB
1195 lines
40 KiB
// TinyColor v1.4.1
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// https://github.com/bgrins/TinyColor
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// Brian Grinstead, MIT License
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(function(Math) {
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var trimLeft = /^\s+/,
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trimRight = /\s+$/,
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tinyCounter = 0,
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mathRound = Math.round,
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mathMin = Math.min,
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mathMax = Math.max,
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mathRandom = Math.random;
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function tinycolor (color, opts) {
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color = (color) ? color : '';
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opts = opts || { };
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// If input is already a tinycolor, return itself
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if (color instanceof tinycolor) {
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return color;
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}
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// If we are called as a function, call using new instead
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if (!(this instanceof tinycolor)) {
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return new tinycolor(color, opts);
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}
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var rgb = inputToRGB(color);
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this._originalInput = color,
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this._r = rgb.r,
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this._g = rgb.g,
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this._b = rgb.b,
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this._a = rgb.a,
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this._roundA = mathRound(100*this._a) / 100,
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this._format = opts.format || rgb.format;
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this._gradientType = opts.gradientType;
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// Don't let the range of [0,255] come back in [0,1].
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// Potentially lose a little bit of precision here, but will fix issues where
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// .5 gets interpreted as half of the total, instead of half of 1
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// If it was supposed to be 128, this was already taken care of by `inputToRgb`
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if (this._r < 1) { this._r = mathRound(this._r); }
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if (this._g < 1) { this._g = mathRound(this._g); }
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if (this._b < 1) { this._b = mathRound(this._b); }
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this._ok = rgb.ok;
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this._tc_id = tinyCounter++;
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}
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tinycolor.prototype = {
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isDark: function() {
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return this.getBrightness() < 128;
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},
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isLight: function() {
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return !this.isDark();
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},
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isValid: function() {
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return this._ok;
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},
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getOriginalInput: function() {
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return this._originalInput;
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},
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getFormat: function() {
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return this._format;
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},
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getAlpha: function() {
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return this._a;
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},
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getBrightness: function() {
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//http://www.w3.org/TR/AERT#color-contrast
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var rgb = this.toRgb();
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return (rgb.r * 299 + rgb.g * 587 + rgb.b * 114) / 1000;
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},
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getLuminance: function() {
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//http://www.w3.org/TR/2008/REC-WCAG20-20081211/#relativeluminancedef
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var rgb = this.toRgb();
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var RsRGB, GsRGB, BsRGB, R, G, B;
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RsRGB = rgb.r/255;
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GsRGB = rgb.g/255;
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BsRGB = rgb.b/255;
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if (RsRGB <= 0.03928) {R = RsRGB / 12.92;} else {R = Math.pow(((RsRGB + 0.055) / 1.055), 2.4);}
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if (GsRGB <= 0.03928) {G = GsRGB / 12.92;} else {G = Math.pow(((GsRGB + 0.055) / 1.055), 2.4);}
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if (BsRGB <= 0.03928) {B = BsRGB / 12.92;} else {B = Math.pow(((BsRGB + 0.055) / 1.055), 2.4);}
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return (0.2126 * R) + (0.7152 * G) + (0.0722 * B);
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},
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setAlpha: function(value) {
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this._a = boundAlpha(value);
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this._roundA = mathRound(100*this._a) / 100;
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return this;
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},
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toHsv: function() {
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var hsv = rgbToHsv(this._r, this._g, this._b);
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return { h: hsv.h * 360, s: hsv.s, v: hsv.v, a: this._a };
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},
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toHsvString: function() {
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var hsv = rgbToHsv(this._r, this._g, this._b);
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var h = mathRound(hsv.h * 360), s = mathRound(hsv.s * 100), v = mathRound(hsv.v * 100);
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return (this._a == 1) ?
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"hsv(" + h + ", " + s + "%, " + v + "%)" :
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"hsva(" + h + ", " + s + "%, " + v + "%, "+ this._roundA + ")";
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},
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toHsl: function() {
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var hsl = rgbToHsl(this._r, this._g, this._b);
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return { h: hsl.h * 360, s: hsl.s, l: hsl.l, a: this._a };
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},
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toHslString: function() {
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var hsl = rgbToHsl(this._r, this._g, this._b);
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var h = mathRound(hsl.h * 360), s = mathRound(hsl.s * 100), l = mathRound(hsl.l * 100);
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return (this._a == 1) ?
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"hsl(" + h + ", " + s + "%, " + l + "%)" :
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"hsla(" + h + ", " + s + "%, " + l + "%, "+ this._roundA + ")";
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},
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toHex: function(allow3Char) {
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return rgbToHex(this._r, this._g, this._b, allow3Char);
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},
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toHexString: function(allow3Char) {
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return '#' + this.toHex(allow3Char);
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},
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toHex8: function(allow4Char) {
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return rgbaToHex(this._r, this._g, this._b, this._a, allow4Char);
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},
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toHex8String: function(allow4Char) {
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return '#' + this.toHex8(allow4Char);
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},
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toRgb: function() {
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return { r: mathRound(this._r), g: mathRound(this._g), b: mathRound(this._b), a: this._a };
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},
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toRgbString: function() {
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return (this._a == 1) ?
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"rgb(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ")" :
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"rgba(" + mathRound(this._r) + ", " + mathRound(this._g) + ", " + mathRound(this._b) + ", " + this._roundA + ")";
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},
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toPercentageRgb: function() {
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return { r: mathRound(bound01(this._r, 255) * 100) + "%", g: mathRound(bound01(this._g, 255) * 100) + "%", b: mathRound(bound01(this._b, 255) * 100) + "%", a: this._a };
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},
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toPercentageRgbString: function() {
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return (this._a == 1) ?
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"rgb(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%)" :
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"rgba(" + mathRound(bound01(this._r, 255) * 100) + "%, " + mathRound(bound01(this._g, 255) * 100) + "%, " + mathRound(bound01(this._b, 255) * 100) + "%, " + this._roundA + ")";
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},
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toName: function() {
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if (this._a === 0) {
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return "transparent";
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}
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if (this._a < 1) {
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return false;
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}
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return hexNames[rgbToHex(this._r, this._g, this._b, true)] || false;
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},
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toFilter: function(secondColor) {
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var hex8String = '#' + rgbaToArgbHex(this._r, this._g, this._b, this._a);
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var secondHex8String = hex8String;
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var gradientType = this._gradientType ? "GradientType = 1, " : "";
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if (secondColor) {
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var s = tinycolor(secondColor);
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secondHex8String = '#' + rgbaToArgbHex(s._r, s._g, s._b, s._a);
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}
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return "progid:DXImageTransform.Microsoft.gradient("+gradientType+"startColorstr="+hex8String+",endColorstr="+secondHex8String+")";
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},
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toString: function(format) {
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var formatSet = !!format;
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format = format || this._format;
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var formattedString = false;
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var hasAlpha = this._a < 1 && this._a >= 0;
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var needsAlphaFormat = !formatSet && hasAlpha && (format === "hex" || format === "hex6" || format === "hex3" || format === "hex4" || format === "hex8" || format === "name");
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if (needsAlphaFormat) {
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// Special case for "transparent", all other non-alpha formats
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// will return rgba when there is transparency.
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if (format === "name" && this._a === 0) {
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return this.toName();
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}
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return this.toRgbString();
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}
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if (format === "rgb") {
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formattedString = this.toRgbString();
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}
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if (format === "prgb") {
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formattedString = this.toPercentageRgbString();
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}
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if (format === "hex" || format === "hex6") {
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formattedString = this.toHexString();
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}
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if (format === "hex3") {
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formattedString = this.toHexString(true);
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}
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if (format === "hex4") {
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formattedString = this.toHex8String(true);
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}
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if (format === "hex8") {
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formattedString = this.toHex8String();
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}
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if (format === "name") {
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formattedString = this.toName();
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}
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if (format === "hsl") {
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formattedString = this.toHslString();
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}
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if (format === "hsv") {
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formattedString = this.toHsvString();
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}
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return formattedString || this.toHexString();
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},
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clone: function() {
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return tinycolor(this.toString());
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},
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_applyModification: function(fn, args) {
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var color = fn.apply(null, [this].concat([].slice.call(args)));
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this._r = color._r;
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this._g = color._g;
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this._b = color._b;
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this.setAlpha(color._a);
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return this;
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},
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lighten: function() {
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return this._applyModification(lighten, arguments);
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},
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brighten: function() {
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return this._applyModification(brighten, arguments);
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},
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darken: function() {
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return this._applyModification(darken, arguments);
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},
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desaturate: function() {
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return this._applyModification(desaturate, arguments);
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},
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saturate: function() {
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return this._applyModification(saturate, arguments);
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},
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greyscale: function() {
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return this._applyModification(greyscale, arguments);
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},
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spin: function() {
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return this._applyModification(spin, arguments);
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},
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_applyCombination: function(fn, args) {
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return fn.apply(null, [this].concat([].slice.call(args)));
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},
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analogous: function() {
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return this._applyCombination(analogous, arguments);
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},
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complement: function() {
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return this._applyCombination(complement, arguments);
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},
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monochromatic: function() {
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return this._applyCombination(monochromatic, arguments);
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},
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splitcomplement: function() {
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return this._applyCombination(splitcomplement, arguments);
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},
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triad: function() {
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return this._applyCombination(triad, arguments);
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},
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tetrad: function() {
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return this._applyCombination(tetrad, arguments);
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}
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};
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// If input is an object, force 1 into "1.0" to handle ratios properly
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// String input requires "1.0" as input, so 1 will be treated as 1
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tinycolor.fromRatio = function(color, opts) {
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if (typeof color == "object") {
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var newColor = {};
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for (var i in color) {
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if (color.hasOwnProperty(i)) {
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if (i === "a") {
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newColor[i] = color[i];
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}
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else {
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newColor[i] = convertToPercentage(color[i]);
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}
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}
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}
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color = newColor;
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}
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return tinycolor(color, opts);
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};
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// Given a string or object, convert that input to RGB
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// Possible string inputs:
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//
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// "red"
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// "#f00" or "f00"
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// "#ff0000" or "ff0000"
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// "#ff000000" or "ff000000"
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// "rgb 255 0 0" or "rgb (255, 0, 0)"
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// "rgb 1.0 0 0" or "rgb (1, 0, 0)"
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// "rgba (255, 0, 0, 1)" or "rgba 255, 0, 0, 1"
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// "rgba (1.0, 0, 0, 1)" or "rgba 1.0, 0, 0, 1"
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// "hsl(0, 100%, 50%)" or "hsl 0 100% 50%"
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// "hsla(0, 100%, 50%, 1)" or "hsla 0 100% 50%, 1"
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// "hsv(0, 100%, 100%)" or "hsv 0 100% 100%"
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//
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function inputToRGB(color) {
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var rgb = { r: 0, g: 0, b: 0 };
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var a = 1;
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var s = null;
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var v = null;
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var l = null;
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var ok = false;
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var format = false;
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if (typeof color == "string") {
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color = stringInputToObject(color);
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}
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if (typeof color == "object") {
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if (isValidCSSUnit(color.r) && isValidCSSUnit(color.g) && isValidCSSUnit(color.b)) {
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rgb = rgbToRgb(color.r, color.g, color.b);
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ok = true;
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format = String(color.r).substr(-1) === "%" ? "prgb" : "rgb";
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}
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else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.v)) {
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s = convertToPercentage(color.s);
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v = convertToPercentage(color.v);
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rgb = hsvToRgb(color.h, s, v);
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ok = true;
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format = "hsv";
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}
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else if (isValidCSSUnit(color.h) && isValidCSSUnit(color.s) && isValidCSSUnit(color.l)) {
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s = convertToPercentage(color.s);
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l = convertToPercentage(color.l);
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rgb = hslToRgb(color.h, s, l);
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ok = true;
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format = "hsl";
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}
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if (color.hasOwnProperty("a")) {
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a = color.a;
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}
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}
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a = boundAlpha(a);
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return {
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ok: ok,
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format: color.format || format,
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r: mathMin(255, mathMax(rgb.r, 0)),
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g: mathMin(255, mathMax(rgb.g, 0)),
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b: mathMin(255, mathMax(rgb.b, 0)),
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a: a
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};
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}
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// Conversion Functions
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// --------------------
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// `rgbToHsl`, `rgbToHsv`, `hslToRgb`, `hsvToRgb` modified from:
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// <http://mjijackson.com/2008/02/rgb-to-hsl-and-rgb-to-hsv-color-model-conversion-algorithms-in-javascript>
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// `rgbToRgb`
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// Handle bounds / percentage checking to conform to CSS color spec
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// <http://www.w3.org/TR/css3-color/>
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// *Assumes:* r, g, b in [0, 255] or [0, 1]
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// *Returns:* { r, g, b } in [0, 255]
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function rgbToRgb(r, g, b){
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return {
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r: bound01(r, 255) * 255,
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g: bound01(g, 255) * 255,
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b: bound01(b, 255) * 255
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};
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}
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// `rgbToHsl`
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// Converts an RGB color value to HSL.
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// *Assumes:* r, g, and b are contained in [0, 255] or [0, 1]
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// *Returns:* { h, s, l } in [0,1]
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function rgbToHsl(r, g, b) {
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r = bound01(r, 255);
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g = bound01(g, 255);
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b = bound01(b, 255);
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var max = mathMax(r, g, b), min = mathMin(r, g, b);
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var h, s, l = (max + min) / 2;
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if(max == min) {
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h = s = 0; // achromatic
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}
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else {
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var d = max - min;
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s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
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switch(max) {
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case r: h = (g - b) / d + (g < b ? 6 : 0); break;
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case g: h = (b - r) / d + 2; break;
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case b: h = (r - g) / d + 4; break;
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}
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h /= 6;
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}
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return { h: h, s: s, l: l };
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}
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// `hslToRgb`
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// Converts an HSL color value to RGB.
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// *Assumes:* h is contained in [0, 1] or [0, 360] and s and l are contained [0, 1] or [0, 100]
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// *Returns:* { r, g, b } in the set [0, 255]
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function hslToRgb(h, s, l) {
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var r, g, b;
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h = bound01(h, 360);
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s = bound01(s, 100);
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l = bound01(l, 100);
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function hue2rgb(p, q, t) {
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if(t < 0) t += 1;
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if(t > 1) t -= 1;
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if(t < 1/6) return p + (q - p) * 6 * t;
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if(t < 1/2) return q;
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if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
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return p;
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}
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if(s === 0) {
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r = g = b = l; // achromatic
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}
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else {
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var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
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var p = 2 * l - q;
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r = hue2rgb(p, q, h + 1/3);
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g = hue2rgb(p, q, h);
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b = hue2rgb(p, q, h - 1/3);
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}
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return { r: r * 255, g: g * 255, b: b * 255 };
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}
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// `rgbToHsv`
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// Converts an RGB color value to HSV
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// *Assumes:* r, g, and b are contained in the set [0, 255] or [0, 1]
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// *Returns:* { h, s, v } in [0,1]
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function rgbToHsv(r, g, b) {
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r = bound01(r, 255);
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g = bound01(g, 255);
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b = bound01(b, 255);
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var max = mathMax(r, g, b), min = mathMin(r, g, b);
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var h, s, v = max;
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var d = max - min;
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s = max === 0 ? 0 : d / max;
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if(max == min) {
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h = 0; // achromatic
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}
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else {
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switch(max) {
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case r: h = (g - b) / d + (g < b ? 6 : 0); break;
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case g: h = (b - r) / d + 2; break;
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case b: h = (r - g) / d + 4; break;
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}
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|
h /= 6;
|
|
}
|
|
return { h: h, s: s, v: v };
|
|
}
|
|
|
|
// `hsvToRgb`
|
|
// Converts an HSV color value to RGB.
|
|
// *Assumes:* h is contained in [0, 1] or [0, 360] and s and v are contained in [0, 1] or [0, 100]
|
|
// *Returns:* { r, g, b } in the set [0, 255]
|
|
function hsvToRgb(h, s, v) {
|
|
|
|
h = bound01(h, 360) * 6;
|
|
s = bound01(s, 100);
|
|
v = bound01(v, 100);
|
|
|
|
var i = Math.floor(h),
|
|
f = h - i,
|
|
p = v * (1 - s),
|
|
q = v * (1 - f * s),
|
|
t = v * (1 - (1 - f) * s),
|
|
mod = i % 6,
|
|
r = [v, q, p, p, t, v][mod],
|
|
g = [t, v, v, q, p, p][mod],
|
|
b = [p, p, t, v, v, q][mod];
|
|
|
|
return { r: r * 255, g: g * 255, b: b * 255 };
|
|
}
|
|
|
|
// `rgbToHex`
|
|
// Converts an RGB color to hex
|
|
// Assumes r, g, and b are contained in the set [0, 255]
|
|
// Returns a 3 or 6 character hex
|
|
function rgbToHex(r, g, b, allow3Char) {
|
|
|
|
var hex = [
|
|
pad2(mathRound(r).toString(16)),
|
|
pad2(mathRound(g).toString(16)),
|
|
pad2(mathRound(b).toString(16))
|
|
];
|
|
|
|
// Return a 3 character hex if possible
|
|
if (allow3Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1)) {
|
|
return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0);
|
|
}
|
|
|
|
return hex.join("");
|
|
}
|
|
|
|
// `rgbaToHex`
|
|
// Converts an RGBA color plus alpha transparency to hex
|
|
// Assumes r, g, b are contained in the set [0, 255] and
|
|
// a in [0, 1]. Returns a 4 or 8 character rgba hex
|
|
function rgbaToHex(r, g, b, a, allow4Char) {
|
|
|
|
var hex = [
|
|
pad2(mathRound(r).toString(16)),
|
|
pad2(mathRound(g).toString(16)),
|
|
pad2(mathRound(b).toString(16)),
|
|
pad2(convertDecimalToHex(a))
|
|
];
|
|
|
|
// Return a 4 character hex if possible
|
|
if (allow4Char && hex[0].charAt(0) == hex[0].charAt(1) && hex[1].charAt(0) == hex[1].charAt(1) && hex[2].charAt(0) == hex[2].charAt(1) && hex[3].charAt(0) == hex[3].charAt(1)) {
|
|
return hex[0].charAt(0) + hex[1].charAt(0) + hex[2].charAt(0) + hex[3].charAt(0);
|
|
}
|
|
|
|
return hex.join("");
|
|
}
|
|
|
|
// `rgbaToArgbHex`
|
|
// Converts an RGBA color to an ARGB Hex8 string
|
|
// Rarely used, but required for "toFilter()"
|
|
function rgbaToArgbHex(r, g, b, a) {
|
|
|
|
var hex = [
|
|
pad2(convertDecimalToHex(a)),
|
|
pad2(mathRound(r).toString(16)),
|
|
pad2(mathRound(g).toString(16)),
|
|
pad2(mathRound(b).toString(16))
|
|
];
|
|
|
|
return hex.join("");
|
|
}
|
|
|
|
// `equals`
|
|
// Can be called with any tinycolor input
|
|
tinycolor.equals = function (color1, color2) {
|
|
if (!color1 || !color2) { return false; }
|
|
return tinycolor(color1).toRgbString() == tinycolor(color2).toRgbString();
|
|
};
|
|
|
|
tinycolor.random = function() {
|
|
return tinycolor.fromRatio({
|
|
r: mathRandom(),
|
|
g: mathRandom(),
|
|
b: mathRandom()
|
|
});
|
|
};
|
|
|
|
|
|
// Modification Functions
|
|
// ----------------------
|
|
// Thanks to less.js for some of the basics here
|
|
// <https://github.com/cloudhead/less.js/blob/master/lib/less/functions.js>
|
|
|
|
function desaturate(color, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 10);
|
|
var hsl = tinycolor(color).toHsl();
|
|
hsl.s -= amount / 100;
|
|
hsl.s = clamp01(hsl.s);
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
function saturate(color, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 10);
|
|
var hsl = tinycolor(color).toHsl();
|
|
hsl.s += amount / 100;
|
|
hsl.s = clamp01(hsl.s);
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
function greyscale(color) {
|
|
return tinycolor(color).desaturate(100);
|
|
}
|
|
|
|
function lighten (color, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 10);
|
|
var hsl = tinycolor(color).toHsl();
|
|
hsl.l += amount / 100;
|
|
hsl.l = clamp01(hsl.l);
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
function brighten(color, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 10);
|
|
var rgb = tinycolor(color).toRgb();
|
|
rgb.r = mathMax(0, mathMin(255, rgb.r - mathRound(255 * - (amount / 100))));
|
|
rgb.g = mathMax(0, mathMin(255, rgb.g - mathRound(255 * - (amount / 100))));
|
|
rgb.b = mathMax(0, mathMin(255, rgb.b - mathRound(255 * - (amount / 100))));
|
|
return tinycolor(rgb);
|
|
}
|
|
|
|
function darken (color, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 10);
|
|
var hsl = tinycolor(color).toHsl();
|
|
hsl.l -= amount / 100;
|
|
hsl.l = clamp01(hsl.l);
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
// Spin takes a positive or negative amount within [-360, 360] indicating the change of hue.
|
|
// Values outside of this range will be wrapped into this range.
|
|
function spin(color, amount) {
|
|
var hsl = tinycolor(color).toHsl();
|
|
var hue = (hsl.h + amount) % 360;
|
|
hsl.h = hue < 0 ? 360 + hue : hue;
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
// Combination Functions
|
|
// ---------------------
|
|
// Thanks to jQuery xColor for some of the ideas behind these
|
|
// <https://github.com/infusion/jQuery-xcolor/blob/master/jquery.xcolor.js>
|
|
|
|
function complement(color) {
|
|
var hsl = tinycolor(color).toHsl();
|
|
hsl.h = (hsl.h + 180) % 360;
|
|
return tinycolor(hsl);
|
|
}
|
|
|
|
function triad(color) {
|
|
var hsl = tinycolor(color).toHsl();
|
|
var h = hsl.h;
|
|
return [
|
|
tinycolor(color),
|
|
tinycolor({ h: (h + 120) % 360, s: hsl.s, l: hsl.l }),
|
|
tinycolor({ h: (h + 240) % 360, s: hsl.s, l: hsl.l })
|
|
];
|
|
}
|
|
|
|
function tetrad(color) {
|
|
var hsl = tinycolor(color).toHsl();
|
|
var h = hsl.h;
|
|
return [
|
|
tinycolor(color),
|
|
tinycolor({ h: (h + 90) % 360, s: hsl.s, l: hsl.l }),
|
|
tinycolor({ h: (h + 180) % 360, s: hsl.s, l: hsl.l }),
|
|
tinycolor({ h: (h + 270) % 360, s: hsl.s, l: hsl.l })
|
|
];
|
|
}
|
|
|
|
function splitcomplement(color) {
|
|
var hsl = tinycolor(color).toHsl();
|
|
var h = hsl.h;
|
|
return [
|
|
tinycolor(color),
|
|
tinycolor({ h: (h + 72) % 360, s: hsl.s, l: hsl.l}),
|
|
tinycolor({ h: (h + 216) % 360, s: hsl.s, l: hsl.l})
|
|
];
|
|
}
|
|
|
|
function analogous(color, results, slices) {
|
|
results = results || 6;
|
|
slices = slices || 30;
|
|
|
|
var hsl = tinycolor(color).toHsl();
|
|
var part = 360 / slices;
|
|
var ret = [tinycolor(color)];
|
|
|
|
for (hsl.h = ((hsl.h - (part * results >> 1)) + 720) % 360; --results; ) {
|
|
hsl.h = (hsl.h + part) % 360;
|
|
ret.push(tinycolor(hsl));
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
function monochromatic(color, results) {
|
|
results = results || 6;
|
|
var hsv = tinycolor(color).toHsv();
|
|
var h = hsv.h, s = hsv.s, v = hsv.v;
|
|
var ret = [];
|
|
var modification = 1 / results;
|
|
|
|
while (results--) {
|
|
ret.push(tinycolor({ h: h, s: s, v: v}));
|
|
v = (v + modification) % 1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Utility Functions
|
|
// ---------------------
|
|
|
|
tinycolor.mix = function(color1, color2, amount) {
|
|
amount = (amount === 0) ? 0 : (amount || 50);
|
|
|
|
var rgb1 = tinycolor(color1).toRgb();
|
|
var rgb2 = tinycolor(color2).toRgb();
|
|
|
|
var p = amount / 100;
|
|
|
|
var rgba = {
|
|
r: ((rgb2.r - rgb1.r) * p) + rgb1.r,
|
|
g: ((rgb2.g - rgb1.g) * p) + rgb1.g,
|
|
b: ((rgb2.b - rgb1.b) * p) + rgb1.b,
|
|
a: ((rgb2.a - rgb1.a) * p) + rgb1.a
|
|
};
|
|
|
|
return tinycolor(rgba);
|
|
};
|
|
|
|
|
|
// Readability Functions
|
|
// ---------------------
|
|
// <http://www.w3.org/TR/2008/REC-WCAG20-20081211/#contrast-ratiodef (WCAG Version 2)
|
|
|
|
// `contrast`
|
|
// Analyze the 2 colors and returns the color contrast defined by (WCAG Version 2)
|
|
tinycolor.readability = function(color1, color2) {
|
|
var c1 = tinycolor(color1);
|
|
var c2 = tinycolor(color2);
|
|
return (Math.max(c1.getLuminance(),c2.getLuminance())+0.05) / (Math.min(c1.getLuminance(),c2.getLuminance())+0.05);
|
|
};
|
|
|
|
// `isReadable`
|
|
// Ensure that foreground and background color combinations meet WCAG2 guidelines.
|
|
// The third argument is an optional Object.
|
|
// the 'level' property states 'AA' or 'AAA' - if missing or invalid, it defaults to 'AA';
|
|
// the 'size' property states 'large' or 'small' - if missing or invalid, it defaults to 'small'.
|
|
// If the entire object is absent, isReadable defaults to {level:"AA",size:"small"}.
|
|
|
|
// *Example*
|
|
// tinycolor.isReadable("#000", "#111") => false
|
|
// tinycolor.isReadable("#000", "#111",{level:"AA",size:"large"}) => false
|
|
tinycolor.isReadable = function(color1, color2, wcag2) {
|
|
var readability = tinycolor.readability(color1, color2);
|
|
var wcag2Parms, out;
|
|
|
|
out = false;
|
|
|
|
wcag2Parms = validateWCAG2Parms(wcag2);
|
|
switch (wcag2Parms.level + wcag2Parms.size) {
|
|
case "AAsmall":
|
|
case "AAAlarge":
|
|
out = readability >= 4.5;
|
|
break;
|
|
case "AAlarge":
|
|
out = readability >= 3;
|
|
break;
|
|
case "AAAsmall":
|
|
out = readability >= 7;
|
|
break;
|
|
}
|
|
return out;
|
|
|
|
};
|
|
|
|
// `mostReadable`
|
|
// Given a base color and a list of possible foreground or background
|
|
// colors for that base, returns the most readable color.
|
|
// Optionally returns Black or White if the most readable color is unreadable.
|
|
// *Example*
|
|
// tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:false}).toHexString(); // "#112255"
|
|
// tinycolor.mostReadable(tinycolor.mostReadable("#123", ["#124", "#125"],{includeFallbackColors:true}).toHexString(); // "#ffffff"
|
|
// tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"large"}).toHexString(); // "#faf3f3"
|
|
// tinycolor.mostReadable("#a8015a", ["#faf3f3"],{includeFallbackColors:true,level:"AAA",size:"small"}).toHexString(); // "#ffffff"
|
|
tinycolor.mostReadable = function(baseColor, colorList, args) {
|
|
var bestColor = null;
|
|
var bestScore = 0;
|
|
var readability;
|
|
var includeFallbackColors, level, size ;
|
|
args = args || {};
|
|
includeFallbackColors = args.includeFallbackColors ;
|
|
level = args.level;
|
|
size = args.size;
|
|
|
|
for (var i= 0; i < colorList.length ; i++) {
|
|
readability = tinycolor.readability(baseColor, colorList[i]);
|
|
if (readability > bestScore) {
|
|
bestScore = readability;
|
|
bestColor = tinycolor(colorList[i]);
|
|
}
|
|
}
|
|
|
|
if (tinycolor.isReadable(baseColor, bestColor, {"level":level,"size":size}) || !includeFallbackColors) {
|
|
return bestColor;
|
|
}
|
|
else {
|
|
args.includeFallbackColors=false;
|
|
return tinycolor.mostReadable(baseColor,["#fff", "#000"],args);
|
|
}
|
|
};
|
|
|
|
|
|
// Big List of Colors
|
|
// ------------------
|
|
// <http://www.w3.org/TR/css3-color/#svg-color>
|
|
var names = tinycolor.names = {
|
|
aliceblue: "f0f8ff",
|
|
antiquewhite: "faebd7",
|
|
aqua: "0ff",
|
|
aquamarine: "7fffd4",
|
|
azure: "f0ffff",
|
|
beige: "f5f5dc",
|
|
bisque: "ffe4c4",
|
|
black: "000",
|
|
blanchedalmond: "ffebcd",
|
|
blue: "00f",
|
|
blueviolet: "8a2be2",
|
|
brown: "a52a2a",
|
|
burlywood: "deb887",
|
|
burntsienna: "ea7e5d",
|
|
cadetblue: "5f9ea0",
|
|
chartreuse: "7fff00",
|
|
chocolate: "d2691e",
|
|
coral: "ff7f50",
|
|
cornflowerblue: "6495ed",
|
|
cornsilk: "fff8dc",
|
|
crimson: "dc143c",
|
|
cyan: "0ff",
|
|
darkblue: "00008b",
|
|
darkcyan: "008b8b",
|
|
darkgoldenrod: "b8860b",
|
|
darkgray: "a9a9a9",
|
|
darkgreen: "006400",
|
|
darkgrey: "a9a9a9",
|
|
darkkhaki: "bdb76b",
|
|
darkmagenta: "8b008b",
|
|
darkolivegreen: "556b2f",
|
|
darkorange: "ff8c00",
|
|
darkorchid: "9932cc",
|
|
darkred: "8b0000",
|
|
darksalmon: "e9967a",
|
|
darkseagreen: "8fbc8f",
|
|
darkslateblue: "483d8b",
|
|
darkslategray: "2f4f4f",
|
|
darkslategrey: "2f4f4f",
|
|
darkturquoise: "00ced1",
|
|
darkviolet: "9400d3",
|
|
deeppink: "ff1493",
|
|
deepskyblue: "00bfff",
|
|
dimgray: "696969",
|
|
dimgrey: "696969",
|
|
dodgerblue: "1e90ff",
|
|
firebrick: "b22222",
|
|
floralwhite: "fffaf0",
|
|
forestgreen: "228b22",
|
|
fuchsia: "f0f",
|
|
gainsboro: "dcdcdc",
|
|
ghostwhite: "f8f8ff",
|
|
gold: "ffd700",
|
|
goldenrod: "daa520",
|
|
gray: "808080",
|
|
green: "008000",
|
|
greenyellow: "adff2f",
|
|
grey: "808080",
|
|
honeydew: "f0fff0",
|
|
hotpink: "ff69b4",
|
|
indianred: "cd5c5c",
|
|
indigo: "4b0082",
|
|
ivory: "fffff0",
|
|
khaki: "f0e68c",
|
|
lavender: "e6e6fa",
|
|
lavenderblush: "fff0f5",
|
|
lawngreen: "7cfc00",
|
|
lemonchiffon: "fffacd",
|
|
lightblue: "add8e6",
|
|
lightcoral: "f08080",
|
|
lightcyan: "e0ffff",
|
|
lightgoldenrodyellow: "fafad2",
|
|
lightgray: "d3d3d3",
|
|
lightgreen: "90ee90",
|
|
lightgrey: "d3d3d3",
|
|
lightpink: "ffb6c1",
|
|
lightsalmon: "ffa07a",
|
|
lightseagreen: "20b2aa",
|
|
lightskyblue: "87cefa",
|
|
lightslategray: "789",
|
|
lightslategrey: "789",
|
|
lightsteelblue: "b0c4de",
|
|
lightyellow: "ffffe0",
|
|
lime: "0f0",
|
|
limegreen: "32cd32",
|
|
linen: "faf0e6",
|
|
magenta: "f0f",
|
|
maroon: "800000",
|
|
mediumaquamarine: "66cdaa",
|
|
mediumblue: "0000cd",
|
|
mediumorchid: "ba55d3",
|
|
mediumpurple: "9370db",
|
|
mediumseagreen: "3cb371",
|
|
mediumslateblue: "7b68ee",
|
|
mediumspringgreen: "00fa9a",
|
|
mediumturquoise: "48d1cc",
|
|
mediumvioletred: "c71585",
|
|
midnightblue: "191970",
|
|
mintcream: "f5fffa",
|
|
mistyrose: "ffe4e1",
|
|
moccasin: "ffe4b5",
|
|
navajowhite: "ffdead",
|
|
navy: "000080",
|
|
oldlace: "fdf5e6",
|
|
olive: "808000",
|
|
olivedrab: "6b8e23",
|
|
orange: "ffa500",
|
|
orangered: "ff4500",
|
|
orchid: "da70d6",
|
|
palegoldenrod: "eee8aa",
|
|
palegreen: "98fb98",
|
|
paleturquoise: "afeeee",
|
|
palevioletred: "db7093",
|
|
papayawhip: "ffefd5",
|
|
peachpuff: "ffdab9",
|
|
peru: "cd853f",
|
|
pink: "ffc0cb",
|
|
plum: "dda0dd",
|
|
powderblue: "b0e0e6",
|
|
purple: "800080",
|
|
rebeccapurple: "663399",
|
|
red: "f00",
|
|
rosybrown: "bc8f8f",
|
|
royalblue: "4169e1",
|
|
saddlebrown: "8b4513",
|
|
salmon: "fa8072",
|
|
sandybrown: "f4a460",
|
|
seagreen: "2e8b57",
|
|
seashell: "fff5ee",
|
|
sienna: "a0522d",
|
|
silver: "c0c0c0",
|
|
skyblue: "87ceeb",
|
|
slateblue: "6a5acd",
|
|
slategray: "708090",
|
|
slategrey: "708090",
|
|
snow: "fffafa",
|
|
springgreen: "00ff7f",
|
|
steelblue: "4682b4",
|
|
tan: "d2b48c",
|
|
teal: "008080",
|
|
thistle: "d8bfd8",
|
|
tomato: "ff6347",
|
|
turquoise: "40e0d0",
|
|
violet: "ee82ee",
|
|
wheat: "f5deb3",
|
|
white: "fff",
|
|
whitesmoke: "f5f5f5",
|
|
yellow: "ff0",
|
|
yellowgreen: "9acd32"
|
|
};
|
|
|
|
// Make it easy to access colors via `hexNames[hex]`
|
|
var hexNames = tinycolor.hexNames = flip(names);
|
|
|
|
|
|
// Utilities
|
|
// ---------
|
|
|
|
// `{ 'name1': 'val1' }` becomes `{ 'val1': 'name1' }`
|
|
function flip(o) {
|
|
var flipped = { };
|
|
for (var i in o) {
|
|
if (o.hasOwnProperty(i)) {
|
|
flipped[o[i]] = i;
|
|
}
|
|
}
|
|
return flipped;
|
|
}
|
|
|
|
// Return a valid alpha value [0,1] with all invalid values being set to 1
|
|
function boundAlpha(a) {
|
|
a = parseFloat(a);
|
|
|
|
if (isNaN(a) || a < 0 || a > 1) {
|
|
a = 1;
|
|
}
|
|
|
|
return a;
|
|
}
|
|
|
|
// Take input from [0, n] and return it as [0, 1]
|
|
function bound01(n, max) {
|
|
if (isOnePointZero(n)) { n = "100%"; }
|
|
|
|
var processPercent = isPercentage(n);
|
|
n = mathMin(max, mathMax(0, parseFloat(n)));
|
|
|
|
// Automatically convert percentage into number
|
|
if (processPercent) {
|
|
n = parseInt(n * max, 10) / 100;
|
|
}
|
|
|
|
// Handle floating point rounding errors
|
|
if ((Math.abs(n - max) < 0.000001)) {
|
|
return 1;
|
|
}
|
|
|
|
// Convert into [0, 1] range if it isn't already
|
|
return (n % max) / parseFloat(max);
|
|
}
|
|
|
|
// Force a number between 0 and 1
|
|
function clamp01(val) {
|
|
return mathMin(1, mathMax(0, val));
|
|
}
|
|
|
|
// Parse a base-16 hex value into a base-10 integer
|
|
function parseIntFromHex(val) {
|
|
return parseInt(val, 16);
|
|
}
|
|
|
|
// Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
|
|
// <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
|
|
function isOnePointZero(n) {
|
|
return typeof n == "string" && n.indexOf('.') != -1 && parseFloat(n) === 1;
|
|
}
|
|
|
|
// Check to see if string passed in is a percentage
|
|
function isPercentage(n) {
|
|
return typeof n === "string" && n.indexOf('%') != -1;
|
|
}
|
|
|
|
// Force a hex value to have 2 characters
|
|
function pad2(c) {
|
|
return c.length == 1 ? '0' + c : '' + c;
|
|
}
|
|
|
|
// Replace a decimal with it's percentage value
|
|
function convertToPercentage(n) {
|
|
if (n <= 1) {
|
|
n = (n * 100) + "%";
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
// Converts a decimal to a hex value
|
|
function convertDecimalToHex(d) {
|
|
return Math.round(parseFloat(d) * 255).toString(16);
|
|
}
|
|
// Converts a hex value to a decimal
|
|
function convertHexToDecimal(h) {
|
|
return (parseIntFromHex(h) / 255);
|
|
}
|
|
|
|
var matchers = (function() {
|
|
|
|
// <http://www.w3.org/TR/css3-values/#integers>
|
|
var CSS_INTEGER = "[-\\+]?\\d+%?";
|
|
|
|
// <http://www.w3.org/TR/css3-values/#number-value>
|
|
var CSS_NUMBER = "[-\\+]?\\d*\\.\\d+%?";
|
|
|
|
// Allow positive/negative integer/number. Don't capture the either/or, just the entire outcome.
|
|
var CSS_UNIT = "(?:" + CSS_NUMBER + ")|(?:" + CSS_INTEGER + ")";
|
|
|
|
// Actual matching.
|
|
// Parentheses and commas are optional, but not required.
|
|
// Whitespace can take the place of commas or opening paren
|
|
var PERMISSIVE_MATCH3 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
|
|
var PERMISSIVE_MATCH4 = "[\\s|\\(]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")[,|\\s]+(" + CSS_UNIT + ")\\s*\\)?";
|
|
|
|
return {
|
|
CSS_UNIT: new RegExp(CSS_UNIT),
|
|
rgb: new RegExp("rgb" + PERMISSIVE_MATCH3),
|
|
rgba: new RegExp("rgba" + PERMISSIVE_MATCH4),
|
|
hsl: new RegExp("hsl" + PERMISSIVE_MATCH3),
|
|
hsla: new RegExp("hsla" + PERMISSIVE_MATCH4),
|
|
hsv: new RegExp("hsv" + PERMISSIVE_MATCH3),
|
|
hsva: new RegExp("hsva" + PERMISSIVE_MATCH4),
|
|
hex3: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
|
|
hex6: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/,
|
|
hex4: /^#?([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})([0-9a-fA-F]{1})$/,
|
|
hex8: /^#?([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})$/
|
|
};
|
|
})();
|
|
|
|
// `isValidCSSUnit`
|
|
// Take in a single string / number and check to see if it looks like a CSS unit
|
|
// (see `matchers` above for definition).
|
|
function isValidCSSUnit(color) {
|
|
return !!matchers.CSS_UNIT.exec(color);
|
|
}
|
|
|
|
// `stringInputToObject`
|
|
// Permissive string parsing. Take in a number of formats, and output an object
|
|
// based on detected format. Returns `{ r, g, b }` or `{ h, s, l }` or `{ h, s, v}`
|
|
function stringInputToObject(color) {
|
|
|
|
color = color.replace(trimLeft,'').replace(trimRight, '').toLowerCase();
|
|
var named = false;
|
|
if (names[color]) {
|
|
color = names[color];
|
|
named = true;
|
|
}
|
|
else if (color == 'transparent') {
|
|
return { r: 0, g: 0, b: 0, a: 0, format: "name" };
|
|
}
|
|
|
|
// Try to match string input using regular expressions.
|
|
// Keep most of the number bounding out of this function - don't worry about [0,1] or [0,100] or [0,360]
|
|
// Just return an object and let the conversion functions handle that.
|
|
// This way the result will be the same whether the tinycolor is initialized with string or object.
|
|
var match;
|
|
if ((match = matchers.rgb.exec(color))) {
|
|
return { r: match[1], g: match[2], b: match[3] };
|
|
}
|
|
if ((match = matchers.rgba.exec(color))) {
|
|
return { r: match[1], g: match[2], b: match[3], a: match[4] };
|
|
}
|
|
if ((match = matchers.hsl.exec(color))) {
|
|
return { h: match[1], s: match[2], l: match[3] };
|
|
}
|
|
if ((match = matchers.hsla.exec(color))) {
|
|
return { h: match[1], s: match[2], l: match[3], a: match[4] };
|
|
}
|
|
if ((match = matchers.hsv.exec(color))) {
|
|
return { h: match[1], s: match[2], v: match[3] };
|
|
}
|
|
if ((match = matchers.hsva.exec(color))) {
|
|
return { h: match[1], s: match[2], v: match[3], a: match[4] };
|
|
}
|
|
if ((match = matchers.hex8.exec(color))) {
|
|
return {
|
|
r: parseIntFromHex(match[1]),
|
|
g: parseIntFromHex(match[2]),
|
|
b: parseIntFromHex(match[3]),
|
|
a: convertHexToDecimal(match[4]),
|
|
format: named ? "name" : "hex8"
|
|
};
|
|
}
|
|
if ((match = matchers.hex6.exec(color))) {
|
|
return {
|
|
r: parseIntFromHex(match[1]),
|
|
g: parseIntFromHex(match[2]),
|
|
b: parseIntFromHex(match[3]),
|
|
format: named ? "name" : "hex"
|
|
};
|
|
}
|
|
if ((match = matchers.hex4.exec(color))) {
|
|
return {
|
|
r: parseIntFromHex(match[1] + '' + match[1]),
|
|
g: parseIntFromHex(match[2] + '' + match[2]),
|
|
b: parseIntFromHex(match[3] + '' + match[3]),
|
|
a: convertHexToDecimal(match[4] + '' + match[4]),
|
|
format: named ? "name" : "hex8"
|
|
};
|
|
}
|
|
if ((match = matchers.hex3.exec(color))) {
|
|
return {
|
|
r: parseIntFromHex(match[1] + '' + match[1]),
|
|
g: parseIntFromHex(match[2] + '' + match[2]),
|
|
b: parseIntFromHex(match[3] + '' + match[3]),
|
|
format: named ? "name" : "hex"
|
|
};
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function validateWCAG2Parms(parms) {
|
|
// return valid WCAG2 parms for isReadable.
|
|
// If input parms are invalid, return {"level":"AA", "size":"small"}
|
|
var level, size;
|
|
parms = parms || {"level":"AA", "size":"small"};
|
|
level = (parms.level || "AA").toUpperCase();
|
|
size = (parms.size || "small").toLowerCase();
|
|
if (level !== "AA" && level !== "AAA") {
|
|
level = "AA";
|
|
}
|
|
if (size !== "small" && size !== "large") {
|
|
size = "small";
|
|
}
|
|
return {"level":level, "size":size};
|
|
}
|
|
|
|
// Node: Export function
|
|
if (typeof module !== "undefined" && module.exports) {
|
|
module.exports = tinycolor;
|
|
}
|
|
// AMD/requirejs: Define the module
|
|
else if (typeof define === 'function' && define.amd) {
|
|
define(function () {return tinycolor;});
|
|
}
|
|
// Browser: Expose to window
|
|
else {
|
|
window.tinycolor = tinycolor;
|
|
}
|
|
|
|
})(Math);
|