├── .gitignore ├── Gruntfile.js ├── LICENSE.md ├── README.md ├── examples ├── animate.html ├── grayscale.html └── iframe.html ├── gradientmaps.js ├── gradientmaps.min.js ├── package.json └── src ├── LICENSE.MD ├── csscolorparser.js └── gm-library.js /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | -------------------------------------------------------------------------------- /Gruntfile.js: -------------------------------------------------------------------------------- 1 | module.exports = function(grunt) { 2 | // Project configuration. 3 | 4 | var project = { 5 | files: ['src/gm-library.js', 'src/csscolorparser.js'] 6 | } 7 | 8 | grunt.initConfig({ 9 | pkg: grunt.file.readJSON('package.json'), 10 | uglify: { 11 | options: { 12 | banner: '/*! Copyright 2013 Adobe Systems Inc.;\n' + 13 | '* Licensed under the Apache License, Version 2.0 (the "License");\n' + 14 | '* you may not use this file except in compliance with the License.\n' + 15 | '* You may obtain a copy of the License at\n\n' + 16 | '* http://www.apache.org/licenses/LICENSE-2.0\n\n' + 17 | '* Unless required by applicable law or agreed to in writing, software\n' + 18 | '* distributed under the License is distributed on an "AS IS" BASIS,\n' + 19 | '* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n' + 20 | '* See the License for the specific language governing permissions and\n' + 21 | '* limitations under the License.\n'+ 22 | '*/\n\n' + 23 | '/*\n' + 24 | 'Gradient Maps support\n' + 25 | 'Author: Alan Greenblatt (blatt@adobe.com, @agreenblatt, blattchat.com)\n' + 26 | '*/\n' 27 | }, 28 | 29 | build: { 30 | src: '<%= concat.dist.dest %>', 31 | dest: '<%= pkg.name %>.min.js' 32 | } 33 | }, 34 | 35 | concat: { 36 | dist: { 37 | src: project.files, 38 | dest: '<%= pkg.name %>.js' 39 | } 40 | }, 41 | 42 | watch: { 43 | js: { 44 | files: project.files, 45 | tasks: ['concat', 'uglify'] 46 | } 47 | } 48 | 49 | }); 50 | 51 | grunt.loadNpmTasks('grunt-contrib-uglify'); 52 | grunt.loadNpmTasks('grunt-contrib-concat'); 53 | grunt.loadNpmTasks('grunt-contrib-watch'); 54 | 55 | grunt.registerTask('default', ['concat', 'uglify']); 56 | grunt.registerTask('build', ['concat', 'uglify']); 57 | }; 58 | -------------------------------------------------------------------------------- /LICENSE.md: -------------------------------------------------------------------------------- 1 | Copyright 2013 Adobe Systems Incorporated. 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While redistributing 180 | the Work or Derivative Works thereof, You may choose to offer, 181 | and charge a fee for, acceptance of support, warranty, indemnity, 182 | or other liability obligations and/or rights consistent with this 183 | License. However, in accepting such obligations, You may act only 184 | on Your own behalf and on Your sole responsibility, not on behalf 185 | of any other Contributor, and only if You agree to indemnify, 186 | defend, and hold each Contributor harmless for any liability 187 | incurred by, or claims asserted against, such Contributor by reason 188 | of your accepting any such warranty or additional liability. 189 | 190 | END OF TERMS AND CONDITIONS -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Gradientmaps.js 2 | 3 | Javascript library that allows you to easily apply gradient maps to any HTML element on the page. 4 | 5 | Check out the blog post at: http://blogs.adobe.com/webplatform/2013/08/06/gradientmaps-js-gradient-maps-for-html/ 6 | 7 | ## Browser Support 8 | 9 | This functionality is currently supported on desktop Chrome and Firefox, and on iOS7 mobile Safari. 10 | 11 | ## What is a Gradient Map you ask? 12 | Traditionally, gradient maps are used in Photoshop. Think about taking an image and converting it to grayscale. Then, take a linear gradient and map that linear gradient to your image, where the left end of your gradient are the darkest values in your image, and the right end of your gradient maps to the brightest parts of your image. If you have a simple linear gradient from red to blue, the darkest parts of your image will get mapped to red, the brightest parts will get mapped to blue, and everything else will be some combination of red and blue, depending on how light or dark it is. 13 | 14 | ## Usage 15 | 16 | First, include the script in your page, most likely just before your closing <body> tag. 17 | 18 | ``` 19 | 20 | ``` 21 | 22 | Now, you can apply a gradient to any element on the page using the following Javascript: 23 | 24 | ``` 25 | GradientMaps.applyGradientMap(targetElement, linearGradient); 26 | ``` 27 | 28 | 29 | **linearGradient** uses the same format as [CSS linear gradients](http://docs.webplatform.org/wiki/css/functions/linear-gradient) without the initial angle, sides or corners. Instead you provide simply a list of comma-separated color-stops. 30 | 31 | Each color-stop consists of a color followed by an optional position. 32 | 33 | The color can be in any of the standard CSS color formats (rgb, rgba, hsl, hsla, named color or #hex-color). 34 | 35 | The position is either a percentage (e.g. 50%) or a fraction from 0.0 to 1.0. 36 | 37 | If the initial color-stop has no position, it is assumed to be 0% 38 | If the final color-stop has no position, it is assumed to be 100% 39 | If a color stop has no position, and it is not the first or last color-stop, it is positioned half way between the previous and next color-stop. 40 | If a color stop's position is less than the previous color-stop, it is repositioned to that of the previously positioned color-stop. 41 | 42 | ## Examples 43 | 44 | ``` 45 | 46 | ``` 47 | 48 | Convert to Black & White: 49 | ``` 50 | 51 | 57 | ``` 58 | 59 | Convert to Black & white, and darken the mid-tones a bit: 60 | ``` 61 | GradientMaps.applyGradientMap(target, "black, gray 60%, white"); 62 | ``` 63 | 64 | Map to a range of colors: 65 | ``` 66 | GradientMaps.applyGradientMap(target, "red, #00FF00, rgb(0, 0, 255), yellow"); 67 | ``` 68 | 69 | ## Contributing 70 | 71 | **DO NOT directly modify the `gradientmaps.js` or `gradientmaps.min.js` files in the project root.** These files are automatically built from components located under the `src/` directory. 72 | 73 | The project uses [Grunt](http://gruntjs.com) to automate the build process. 74 | 75 | 76 | Grunt depends on [Node.js](http://nodejs.org/) and [npm](https://npmjs.org/). 77 | 78 | 79 | **Install Grunt** 80 | ``` 81 | npm install -g grunt 82 | ``` 83 | 84 | Tell Grunt to watch for changes and automatically build `gradientmaps.js` and `gradientmaps.min.js`: 85 | ``` 86 | grunt watch 87 | ``` 88 | 89 | While `grunt watch` is running, every time you make changes to components under `src/` the main files, `cssregions.js` and `cssregions.min.js`, are built and written to the project root. 90 | 91 | To do a one-time build run: 92 | ``` 93 | grunt build 94 | ``` 95 | 96 | ## Testing 97 | 98 | ** Currently there are no tests ** 99 | 100 | I know, lame. 101 | 102 | ### Requirements 103 | 104 | 105 | ## License information 106 | 107 | The code in this repository implies and respects different licenses. This is a quick overview. For details check each folder's corresponding LICENSE.md file. 108 | 109 | - Adobe Apache 2 for Gradientmaps 110 | - MIT for csscolorparser 111 | - Public Domain for tests, demos and docs 112 | - Third party assets under their own licenses 113 | 114 | See LICENSE.md for details. 115 | -------------------------------------------------------------------------------- /examples/animate.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 11 | 12 | 13 | 14 |
By Kadellar (Own work) [CC-BY-SA-3.0], via Wikimedia Commons
15 | 16 | 17 | 18 |
19 | 20 | 21 | 22 | 63 | 64 | 65 | -------------------------------------------------------------------------------- /examples/grayscale.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 19 | 20 | 21 |
22 | 23 |
24 | 25 | 26 |
27 | 28 | 29 | 30 | 31 | 32 | 39 | 40 | 41 | -------------------------------------------------------------------------------- /examples/iframe.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 39 | 40 | 41 | 42 |

Try experimenting with your own gradient maps or your own website.

43 | 44 | 45 | 46 | 69 | 82 | 83 |
47 |

Sample gradients:

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79 | *Unfortunately, not all URLs will work with this demo due to IFrame security concerns. 80 |
81 |
84 | 85 | 86 | 87 | 131 | 132 | 133 | -------------------------------------------------------------------------------- /gradientmaps.js: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright 2013 Adobe Systems Inc. 3 | 4 | Licensed under the Apache License, Version 2.0 (the "License"); 5 | you may not use this file except in compliance with the License. 6 | You may obtain a copy of the License at 7 | 8 | http://www.apache.org/licenses/LICENSE-2.0 9 | 10 | Unless required by applicable law or agreed to in writing, software 11 | distributed under the License is distributed on an "AS IS" BASIS, 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | See the License for the specific language governing permissions and limitations under the License. 14 | */ 15 | 16 | /* 17 | Gradient Maps support 18 | Author: Alan Greenblatt (blatt@adobe.com, @agreenblatt, blattchat.com) 19 | */ 20 | 21 | window.GradientMaps = function(scope) { 22 | function GradientMaps() { 23 | this.init(); 24 | } 25 | 26 | GradientMaps.prototype = { 27 | init: function() { 28 | }, 29 | 30 | generateID: function() { 31 | this.previousID = this.previousID + 1 || 0; 32 | return this.previousID; 33 | }, 34 | 35 | calcStopsArray: function(stopsDecl) { 36 | /* 37 | * Each stop consists of a color and an optional percentage or length 38 | * stops: [, ] 39 | * : color [ | ]? 40 | * 41 | * If the first color-stop does not have a length or percentage, it defaults to 0% 42 | * If the last color-stop does not have a length or percentage, it defaults to 100% 43 | * If a color-stop, other than the first or last, does not have a length or percentage, it is assigned the position half way between the previous and the next stop. 44 | * If a color-stop, other than the first or last, has a specified position less than the previous stop, its position is changed to be equal to the largest specified position of any prior color-stop. 45 | */ 46 | 47 | var matches = stopsDecl.match(/(((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(0?\.\d+|\d{1,3}%))?)/g); 48 | 49 | var stopsDeclArr = stopsDecl.split(','); 50 | var stops = []; 51 | 52 | matches.forEach(function(colorStop) { 53 | var colorStopMatches = colorStop.match(/(?:((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(?:0?\.\d+|\d{1,3}%))?)/); 54 | if (colorStopMatches && colorStopMatches.length >= 4) { 55 | var posMatch = colorStopMatches[3]; 56 | stops.push({ 57 | color: parseCSSColor(colorStopMatches[1]), 58 | pos: posMatch ? parse_css_float(posMatch) * 100 : null 59 | }) 60 | } 61 | }); 62 | 63 | /* 64 | * Need to calculate the positions where they aren't specified. 65 | * In the case of the first and last stop, we may even have to add a new stop. 66 | * 67 | * Go through the array of stops, finding ones where the position is not specified. 68 | * Then, find the next specified position or terminate on the last stop. 69 | * Finally, evenly distribute the unspecified positions, with the first stop at 0 70 | * and the last stop at 100. 71 | */ 72 | 73 | if (stops.length >= 1) { 74 | // If the first stop's position is not specified, set it to 0. 75 | var stop = stops[0]; 76 | if (!stop.pos) 77 | stop.pos = 0; 78 | else 79 | stop.pos = Math.min(100, Math.max(0, stop.pos)); 80 | 81 | var currentPos = stop.pos; 82 | 83 | // If the last stop's position is not specified, set it to 100. 84 | stop = stops[stops.length-1]; 85 | if (!stop.pos) 86 | stop.pos = 100; 87 | else 88 | stop.pos = Math.min(100, Math.max(0, stop.pos)); 89 | 90 | // Make sure that all positions are in ascending order 91 | for (var i = 1; i < stops.length-1; i++) { 92 | stop = stops[i]; 93 | if (stop.pos && stop.pos < currentPos) 94 | stop.pos = currentPos; 95 | if (stop.pos > 100) stop.pos = 100; 96 | currentPos = stop.pos; 97 | } 98 | 99 | // Find any runs of unpositioned stops and calculate them 100 | var i = 1; 101 | while (i < (stops.length-1)) { 102 | if (!stops[i].pos) { 103 | // Find the next positioned stop. You'll always have at least the 104 | // last stop at 100. 105 | for (var j = i+1; j < stops.length; j++) { 106 | if (stops[j].pos) 107 | break; 108 | } 109 | 110 | var startPos = stops[i-1].pos; 111 | var endPos = stops[j].pos; 112 | var nStops = j - 1 + 1; 113 | 114 | var delta = Math.round((endPos - startPos) / nStops); 115 | while (i < j) { 116 | stops[i].pos = stops[i-1].pos + delta; 117 | i++; 118 | } 119 | } 120 | 121 | i++; 122 | } 123 | 124 | if (stops[0].pos != 0) { 125 | stops.unshift({ 126 | color: stops[0].color, 127 | pos: 0 128 | }); 129 | } 130 | 131 | if (stops[stops.length-1].pos != 100) { 132 | stops.push({ 133 | color: stops[stops.length-1].color, 134 | pos: 100 135 | }) 136 | } 137 | } 138 | 139 | return stops; 140 | }, 141 | 142 | findMatchingDistributedNSegs: function(stops) { 143 | var maxNumSegs = 100; 144 | var matched = false; 145 | for (var nSegs = 1; !matched && nSegs <= maxNumSegs; nSegs++) { 146 | var segSize = maxNumSegs / nSegs; 147 | matched = true; 148 | for (var i = 1; i < stops.length-1; i++) { 149 | var pos = stops[i].pos; 150 | if (pos < segSize) { 151 | matched = false; 152 | break; 153 | } 154 | var rem = pos % segSize; 155 | var maxDiff = 1.0; 156 | if (!(rem < maxDiff || (segSize - rem) < maxDiff)) { 157 | matched = false; 158 | break; 159 | } 160 | } 161 | 162 | if (matched) 163 | return nSegs; 164 | } 165 | 166 | return nSegs; 167 | }, 168 | 169 | calcDistributedColors: function(stops, nSegs) { 170 | var colors = [stops[0].color]; 171 | 172 | var segSize = 100 / nSegs; 173 | for (var i = 1; i < stops.length-1; i++) { 174 | var stop = stops[i]; 175 | var n = Math.round(stop.pos / segSize); 176 | colors[n] = stop.color; 177 | } 178 | 179 | colors[nSegs] = stops[stops.length-1].color; 180 | 181 | var i = 1; 182 | while (i < colors.length) { 183 | if (!colors[i]) { 184 | for (var j = i+1; j < colors.length; j++) { 185 | if (colors[j]) 186 | break; 187 | } 188 | 189 | // Need to evenly distribute colors stops from svgStop[i-1] to svgStop[j] 190 | 191 | var startColor = colors[i-1]; 192 | var r = startColor[0]; 193 | var g = startColor[1]; 194 | var b = startColor[2]; 195 | var a = startColor[3]; 196 | 197 | var endColor = colors[j]; 198 | 199 | var nSegs = j - i + 1; 200 | var dr = (endColor[0] - r) / nSegs; 201 | var dg = (endColor[1] - g) / nSegs; 202 | var db = (endColor[2] - b) / nSegs; 203 | var da = (endColor[3] - a) / nSegs; 204 | 205 | while (i < j) { 206 | r += dr; 207 | g += dg; 208 | b += db; 209 | a += da; 210 | colors[i] = [r, g, b, a]; 211 | i++; 212 | } 213 | } 214 | i++; 215 | } 216 | 217 | return colors; 218 | }, 219 | 220 | addElement: function(doc, parent, tagname, ns, attributes) { 221 | var elem = ns ? doc.createElementNS(ns, tagname) : doc.createElement(tagname); 222 | if (attributes) { 223 | Object.keys(attributes).forEach(function(key, index, keys) { 224 | elem.setAttribute(key, attributes[key]); 225 | }); 226 | //elem.setAttribute(attr.name, attr.value); 227 | } 228 | 229 | if (parent) parent.appendChild(elem); 230 | return elem; 231 | }, 232 | 233 | addSVGComponentTransferFilter: function(elem, colors) { 234 | var filter = null; 235 | var svg = null; 236 | var svgns = 'http://www.w3.org/2000/svg'; 237 | var filterID = elem.getAttribute('data-gradientmap-filter'); 238 | 239 | var svgIsNew = false; 240 | 241 | var doc = elem.ownerDocument; 242 | 243 | if (filterID) { 244 | filter = doc.getElementById(filterID); 245 | if (filter) { 246 | // Remove old component transfer function 247 | var componentTransfers = filter.getElementsByTagNameNS(svgns, 'feComponentTransfer'); 248 | if (componentTransfers) { 249 | for (var i = componentTransfers.length-1; i >= 0; --i) 250 | filter.removeChild(componentTransfers[i]); 251 | 252 | svg = filter.parentElement; 253 | } 254 | } 255 | } 256 | 257 | // The last thing to be set previously is 'svg'. If that is still null, that will handle any errors 258 | if (!svg) { 259 | var svg = this.addElement(doc, null, 'svg', svgns, { 260 | 'version': '1.1', 261 | 'width': 0, 262 | 'height': 0 263 | }); 264 | 265 | filterID = 'filter-' + this.generateID(); 266 | filter = this.addElement(doc, svg, 'filter', svgns, {'id': filterID}); 267 | elem.setAttribute('data-gradientmap-filter', filterID); 268 | 269 | // First, apply a color matrix to turn the source into a grayscale 270 | var colorMatrix = this.addElement(doc, filter, 'feColorMatrix', svgns, { 271 | 'type': 'matrix', 272 | 'values': '0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0 0 0 1 0', 273 | 'result': 'gray' 274 | }); 275 | 276 | svgIsNew = true; 277 | } 278 | 279 | // Now apply a component transfer to remap the colors 280 | var componentTransfer = this.addElement(doc, filter, 'feComponentTransfer', svgns, {'color-interpolation-filters': 'sRGB'}); 281 | 282 | var redTableValues = ""; 283 | var greenTableValues = ""; 284 | var blueTableValues = ""; 285 | var alphaTableValues = ""; 286 | 287 | colors.forEach(function(color, index, colors) { 288 | redTableValues += (color[0] / 255.0 + " "); 289 | greenTableValues += (color[1] / 255.0 + " "); 290 | blueTableValues += (color[2] / 255.0 + " "); 291 | alphaTableValues += (color[3] + " "); 292 | }); 293 | 294 | this.addElement(doc, componentTransfer, 'feFuncR', svgns, {'type': 'table', 'tableValues': redTableValues.trim()}); 295 | this.addElement(doc, componentTransfer, 'feFuncG', svgns, {'type': 'table', 'tableValues': greenTableValues.trim()}); 296 | this.addElement(doc, componentTransfer, 'feFuncB', svgns, {'type': 'table', 'tableValues': blueTableValues.trim()}); 297 | this.addElement(doc, componentTransfer, 'feFuncA', svgns, {'type': 'table', 'tableValues': alphaTableValues.trim()}); 298 | 299 | if (svgIsNew) 300 | elem.parentElement.insertBefore(svg, elem); 301 | 302 | var filterDecl = 'url(#' + filterID + ')'; 303 | elem.style['-webkit-filter'] = filterDecl; 304 | elem.style['filter'] = filterDecl; 305 | 306 | //elem.setAttribute('style', '-webkit-filter: url(#' + filterID + '); filter: url(#' + filterID + ')'); 307 | }, 308 | 309 | applyGradientMap: function(elem, gradient) { 310 | var stops = this.calcStopsArray(gradient); 311 | var nSegs = this.findMatchingDistributedNSegs(stops); 312 | var colors = this.calcDistributedColors(stops, nSegs); 313 | 314 | this.addSVGComponentTransferFilter(elem, colors); 315 | }, 316 | 317 | removeGradientMap: function(elem) { 318 | var filterID = elem.getAttribute('data-gradientmap-filter'); 319 | if (filterID) { 320 | var doc = elem.ownerDocument; 321 | var filter = doc.getElementById(filterID); 322 | if (filter) { 323 | var svg = filter.parentElement; 324 | svg.removeChild(filter); 325 | if (svg.childNodes.length <= 0) { 326 | var parent = svg.parentElement; 327 | parent.removeChild(svg); 328 | } 329 | } 330 | elem.removeAttribute('data-gradientmap-filter'); 331 | elem.style['-webkit-filter'] = ''; 332 | elem.style['filter'] = ''; 333 | } 334 | }, 335 | } 336 | 337 | return new GradientMaps(); 338 | }(window); 339 | 340 | // (c) Dean McNamee , 2012. 341 | // 342 | // https://github.com/deanm/css-color-parser-js 343 | // 344 | // Permission is hereby granted, free of charge, to any person obtaining a copy 345 | // of this software and associated documentation files (the "Software"), to 346 | // deal in the Software without restriction, including without limitation the 347 | // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or 348 | // sell copies of the Software, and to permit persons to whom the Software is 349 | // furnished to do so, subject to the following conditions: 350 | // 351 | // The above copyright notice and this permission notice shall be included in 352 | // all copies or substantial portions of the Software. 353 | // 354 | // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 355 | // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 356 | // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 357 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 358 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 359 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 360 | // IN THE SOFTWARE. 361 | 362 | // http://www.w3.org/TR/css3-color/ 363 | var kCSSColorTable = { 364 | "transparent": [0,0,0,0], "aliceblue": [240,248,255,1], 365 | "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1], 366 | "aquamarine": [127,255,212,1], "azure": [240,255,255,1], 367 | "beige": [245,245,220,1], "bisque": [255,228,196,1], 368 | "black": [0,0,0,1], "blanchedalmond": [255,235,205,1], 369 | "blue": [0,0,255,1], "blueviolet": [138,43,226,1], 370 | "brown": [165,42,42,1], "burlywood": [222,184,135,1], 371 | "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1], 372 | "chocolate": [210,105,30,1], "coral": [255,127,80,1], 373 | "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1], 374 | "crimson": [220,20,60,1], "cyan": [0,255,255,1], 375 | "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1], 376 | "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1], 377 | "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1], 378 | "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1], 379 | "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1], 380 | "darkorchid": [153,50,204,1], "darkred": [139,0,0,1], 381 | "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1], 382 | "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1], 383 | "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1], 384 | "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1], 385 | "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1], 386 | "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1], 387 | "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1], 388 | "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1], 389 | "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1], 390 | "gold": [255,215,0,1], "goldenrod": [218,165,32,1], 391 | "gray": [128,128,128,1], "green": [0,128,0,1], 392 | "greenyellow": [173,255,47,1], "grey": [128,128,128,1], 393 | "honeydew": [240,255,240,1], "hotpink": [255,105,180,1], 394 | "indianred": [205,92,92,1], "indigo": [75,0,130,1], 395 | "ivory": [255,255,240,1], "khaki": [240,230,140,1], 396 | "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1], 397 | "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1], 398 | "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1], 399 | "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1], 400 | "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1], 401 | "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1], 402 | "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1], 403 | "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1], 404 | "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1], 405 | "lightyellow": [255,255,224,1], "lime": [0,255,0,1], 406 | "limegreen": [50,205,50,1], "linen": [250,240,230,1], 407 | "magenta": [255,0,255,1], "maroon": [128,0,0,1], 408 | "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1], 409 | "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1], 410 | "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1], 411 | "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1], 412 | "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1], 413 | "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1], 414 | "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1], 415 | "navy": [0,0,128,1], "oldlace": [253,245,230,1], 416 | "olive": [128,128,0,1], "olivedrab": [107,142,35,1], 417 | "orange": [255,165,0,1], "orangered": [255,69,0,1], 418 | "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1], 419 | "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1], 420 | "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1], 421 | "peachpuff": [255,218,185,1], "peru": [205,133,63,1], 422 | "pink": [255,192,203,1], "plum": [221,160,221,1], 423 | "powderblue": [176,224,230,1], "purple": [128,0,128,1], 424 | "red": [255,0,0,1], "rosybrown": [188,143,143,1], 425 | "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1], 426 | "salmon": [250,128,114,1], "sandybrown": [244,164,96,1], 427 | "seagreen": [46,139,87,1], "seashell": [255,245,238,1], 428 | "sienna": [160,82,45,1], "silver": [192,192,192,1], 429 | "skyblue": [135,206,235,1], "slateblue": [106,90,205,1], 430 | "slategray": [112,128,144,1], "slategrey": [112,128,144,1], 431 | "snow": [255,250,250,1], "springgreen": [0,255,127,1], 432 | "steelblue": [70,130,180,1], "tan": [210,180,140,1], 433 | "teal": [0,128,128,1], "thistle": [216,191,216,1], 434 | "tomato": [255,99,71,1], "turquoise": [64,224,208,1], 435 | "violet": [238,130,238,1], "wheat": [245,222,179,1], 436 | "white": [255,255,255,1], "whitesmoke": [245,245,245,1], 437 | "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]} 438 | 439 | function clamp_css_byte(i) { // Clamp to integer 0 .. 255. 440 | i = Math.round(i); // Seems to be what Chrome does (vs truncation). 441 | return i < 0 ? 0 : i > 255 ? 255 : i; 442 | } 443 | 444 | function clamp_css_float(f) { // Clamp to float 0.0 .. 1.0. 445 | return f < 0 ? 0 : f > 1 ? 1 : f; 446 | } 447 | 448 | function parse_css_int(str) { // int or percentage. 449 | if (str[str.length - 1] === '%') 450 | return clamp_css_byte(parseFloat(str) / 100 * 255); 451 | return clamp_css_byte(parseInt(str)); 452 | } 453 | 454 | function parse_css_float(str) { // float or percentage. 455 | if (str[str.length - 1] === '%') 456 | return clamp_css_float(parseFloat(str) / 100); 457 | return clamp_css_float(parseFloat(str)); 458 | } 459 | 460 | function css_hue_to_rgb(m1, m2, h) { 461 | if (h < 0) h += 1; 462 | else if (h > 1) h -= 1; 463 | 464 | if (h * 6 < 1) return m1 + (m2 - m1) * h * 6; 465 | if (h * 2 < 1) return m2; 466 | if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6; 467 | return m1; 468 | } 469 | 470 | function parseCSSColor(css_str) { 471 | // Remove all whitespace, not compliant, but should just be more accepting. 472 | var str = css_str.replace(/ /g, '').toLowerCase(); 473 | 474 | // Color keywords (and transparent) lookup. 475 | if (str in kCSSColorTable) return kCSSColorTable[str].slice(); // dup. 476 | 477 | // #abc and #abc123 syntax. 478 | if (str[0] === '#') { 479 | if (str.length === 4) { 480 | var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing. 481 | if (!(iv >= 0 && iv <= 0xfff)) return null; // Covers NaN. 482 | return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8), 483 | (iv & 0xf0) | ((iv & 0xf0) >> 4), 484 | (iv & 0xf) | ((iv & 0xf) << 4), 485 | 1]; 486 | } else if (str.length === 7) { 487 | var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing. 488 | if (!(iv >= 0 && iv <= 0xffffff)) return null; // Covers NaN. 489 | return [(iv & 0xff0000) >> 16, 490 | (iv & 0xff00) >> 8, 491 | iv & 0xff, 492 | 1]; 493 | } 494 | 495 | return null; 496 | } 497 | 498 | var op = str.indexOf('('), ep = str.indexOf(')'); 499 | if (op !== -1 && ep + 1 === str.length) { 500 | var fname = str.substr(0, op); 501 | var params = str.substr(op+1, ep-(op+1)).split(','); 502 | var alpha = 1; // To allow case fallthrough. 503 | switch (fname) { 504 | case 'rgba': 505 | if (params.length !== 4) return null; 506 | alpha = parse_css_float(params.pop()); 507 | // Fall through. 508 | case 'rgb': 509 | if (params.length !== 3) return null; 510 | return [parse_css_int(params[0]), 511 | parse_css_int(params[1]), 512 | parse_css_int(params[2]), 513 | alpha]; 514 | case 'hsla': 515 | if (params.length !== 4) return null; 516 | alpha = parse_css_float(params.pop()); 517 | // Fall through. 518 | case 'hsl': 519 | if (params.length !== 3) return null; 520 | var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360; // 0 .. 1 521 | // NOTE(deanm): According to the CSS spec s/l should only be 522 | // percentages, but we don't bother and let float or percentage. 523 | var s = parse_css_float(params[1]); 524 | var l = parse_css_float(params[2]); 525 | var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s; 526 | var m1 = l * 2 - m2; 527 | return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255), 528 | clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255), 529 | clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255), 530 | alpha]; 531 | default: 532 | return null; 533 | } 534 | } 535 | 536 | return null; 537 | } 538 | 539 | try { exports.parseCSSColor = parseCSSColor } catch(e) { } 540 | -------------------------------------------------------------------------------- /gradientmaps.min.js: -------------------------------------------------------------------------------- 1 | /*! Copyright 2013 Adobe Systems Inc.; 2 | * Licensed under the Apache License, Version 2.0 (the "License"); 3 | * you may not use this file except in compliance with the License. 4 | * You may obtain a copy of the License at 5 | 6 | * http://www.apache.org/licenses/LICENSE-2.0 7 | 8 | * Unless required by applicable law or agreed to in writing, software 9 | * distributed under the License is distributed on an "AS IS" BASIS, 10 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 | * See the License for the specific language governing permissions and 12 | * limitations under the License. 13 | */ 14 | 15 | /* 16 | Gradient Maps support 17 | Author: Alan Greenblatt (blatt@adobe.com, @agreenblatt, blattchat.com) 18 | */ 19 | function clamp_css_byte(a){return a=Math.round(a),0>a?0:a>255?255:a}function clamp_css_float(a){return 0>a?0:a>1?1:a}function parse_css_int(a){return clamp_css_byte("%"===a[a.length-1]?parseFloat(a)/100*255:parseInt(a))}function parse_css_float(a){return clamp_css_float("%"===a[a.length-1]?parseFloat(a)/100:parseFloat(a))}function css_hue_to_rgb(a,b,c){return 0>c?c+=1:c>1&&(c-=1),1>6*c?a+(b-a)*c*6:1>2*c?b:2>3*c?a+(b-a)*(2/3-c)*6:a}function parseCSSColor(a){var b=a.replace(/ /g,"").toLowerCase();if(b in kCSSColorTable)return kCSSColorTable[b].slice();if("#"===b[0]){if(4===b.length){var c=parseInt(b.substr(1),16);return c>=0&&4095>=c?[(3840&c)>>4|(3840&c)>>8,240&c|(240&c)>>4,15&c|(15&c)<<4,1]:null}if(7===b.length){var c=parseInt(b.substr(1),16);return c>=0&&16777215>=c?[(16711680&c)>>16,(65280&c)>>8,255&c,1]:null}return null}var d=b.indexOf("("),e=b.indexOf(")");if(-1!==d&&e+1===b.length){var f=b.substr(0,d),g=b.substr(d+1,e-(d+1)).split(","),h=1;switch(f){case"rgba":if(4!==g.length)return null;h=parse_css_float(g.pop());case"rgb":return 3!==g.length?null:[parse_css_int(g[0]),parse_css_int(g[1]),parse_css_int(g[2]),h];case"hsla":if(4!==g.length)return null;h=parse_css_float(g.pop());case"hsl":if(3!==g.length)return null;var i=(parseFloat(g[0])%360+360)%360/360,j=parse_css_float(g[1]),k=parse_css_float(g[2]),l=.5>=k?k*(j+1):k+j-k*j,m=2*k-l;return[clamp_css_byte(255*css_hue_to_rgb(m,l,i+1/3)),clamp_css_byte(255*css_hue_to_rgb(m,l,i)),clamp_css_byte(255*css_hue_to_rgb(m,l,i-1/3)),h];default:return null}}return null}window.GradientMaps=function(a){function b(){this.init()}return b.prototype={init:function(){},generateID:function(){return this.previousID=this.previousID+1||0,this.previousID},calcStopsArray:function(a){var b=a.match(/(((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(0?\.\d+|\d{1,3}%))?)/g),c=(a.split(","),[]);if(b.forEach(function(a){var b=a.match(/(?:((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(?:0?\.\d+|\d{1,3}%))?)/);b&&b.length>=4&&(posMatch=b[3],c.push({color:parseCSSColor(b[1]),pos:posMatch?100*parse_css_float(posMatch):null}))}),c.length>=1){var d=c[0];d.pos?d.pos=Math.min(100,Math.max(0,d.pos)):d.pos=0;var e=d.pos;d=c[c.length-1],d.pos?d.pos=Math.min(100,Math.max(0,d.pos)):d.pos=100;for(var f=1;f100&&(d.pos=100),e=d.pos;for(var f=1;ff;)c[f].pos=c[f-1].pos+k,f++}f++}0!=c[0].pos&&c.unshift({color:c[0].color,pos:0}),100!=c[c.length-1].pos&&c.push({color:c[c.length-1].color,pos:100})}return c},findMatchingDistributedNSegs:function(a){for(var b=100,c=!1,d=1;!c&&b>=d;d++){var e=b/d;c=!0;for(var f=1;fg){c=!1;break}var h=g%e,i=1;if(!(i>h||i>e-h)){c=!1;break}}if(c)return d}return d},calcDistributedColors:function(a,b){for(var c=[a[0].color],d=100/b,e=1;ee;)j+=o,k+=p,l+=q,m+=r,c[e]=[j,k,l,m],e++}e++}return c},addElement:function(a,b,c,d,e){var f=d?a.createElementNS(d,c):a.createElement(c);return e&&Object.keys(e).forEach(function(a,b,c){f.setAttribute(a,e[a])}),b&&b.appendChild(f),f},addSVGComponentTransferFilter:function(a,b){var c=null,d=null,e="http://www.w3.org/2000/svg",f=a.getAttribute("data-gradientmap-filter"),g=!1,h=a.ownerDocument;if(f&&(c=h.getElementById(f))){var i=c.getElementsByTagNameNS(e,"feComponentTransfer");if(i){for(var j=i.length-1;j>=0;--j)c.removeChild(i[j]);d=c.parentElement}}if(!d){var d=this.addElement(h,null,"svg",e,{version:"1.1",width:0,height:0});f="filter-"+this.generateID(),c=this.addElement(h,d,"filter",e,{id:f}),a.setAttribute("data-gradientmap-filter",f);this.addElement(h,c,"feColorMatrix",e,{type:"matrix",values:"0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0 0 0 1 0",result:"gray"});g=!0}var k=this.addElement(h,c,"feComponentTransfer",e,{"color-interpolation-filters":"sRGB"}),l="",m="",n="",o="";b.forEach(function(a,b,c){l+=a[0]/255+" ",m+=a[1]/255+" ",n+=a[2]/255+" ",o+=a[3]+" "}),this.addElement(h,k,"feFuncR",e,{type:"table",tableValues:l.trim()}),this.addElement(h,k,"feFuncG",e,{type:"table",tableValues:m.trim()}),this.addElement(h,k,"feFuncB",e,{type:"table",tableValues:n.trim()}),this.addElement(h,k,"feFuncA",e,{type:"table",tableValues:o.trim()}),g&&a.parentElement.insertBefore(d,a);var p="url(#"+f+")";a.style["-webkit-filter"]=p,a.style.filter=p},applyGradientMap:function(a,b){var c=this.calcStopsArray(b),d=this.findMatchingDistributedNSegs(c),e=this.calcDistributedColors(c,d);this.addSVGComponentTransferFilter(a,e)},removeGradientMap:function(a){var b=a.getAttribute("data-gradientmap-filter");if(b){var c=a.ownerDocument,d=c.getElementById(b);if(d){var e=d.parentElement;if(e.removeChild(d),e.childNodes.length<=0){var f=e.parentElement;f.removeChild(e)}}a.removeAttribute("data-gradientmap-filter"),a.style["-webkit-filter"]="",a.style.filter=""}}},new b}(window);var kCSSColorTable={transparent:[0,0,0,0],aliceblue:[240,248,255,1],antiquewhite:[250,235,215,1],aqua:[0,255,255,1],aquamarine:[127,255,212,1],azure:[240,255,255,1],beige:[245,245,220,1],bisque:[255,228,196,1],black:[0,0,0,1],blanchedalmond:[255,235,205,1],blue:[0,0,255,1],blueviolet:[138,43,226,1],brown:[165,42,42,1],burlywood:[222,184,135,1],cadetblue:[95,158,160,1],chartreuse:[127,255,0,1],chocolate:[210,105,30,1],coral:[255,127,80,1],cornflowerblue:[100,149,237,1],cornsilk:[255,248,220,1],crimson:[220,20,60,1],cyan:[0,255,255,1],darkblue:[0,0,139,1],darkcyan:[0,139,139,1],darkgoldenrod:[184,134,11,1],darkgray:[169,169,169,1],darkgreen:[0,100,0,1],darkgrey:[169,169,169,1],darkkhaki:[189,183,107,1],darkmagenta:[139,0,139,1],darkolivegreen:[85,107,47,1],darkorange:[255,140,0,1],darkorchid:[153,50,204,1],darkred:[139,0,0,1],darksalmon:[233,150,122,1],darkseagreen:[143,188,143,1],darkslateblue:[72,61,139,1],darkslategray:[47,79,79,1],darkslategrey:[47,79,79,1],darkturquoise:[0,206,209,1],darkviolet:[148,0,211,1],deeppink:[255,20,147,1],deepskyblue:[0,191,255,1],dimgray:[105,105,105,1],dimgrey:[105,105,105,1],dodgerblue:[30,144,255,1],firebrick:[178,34,34,1],floralwhite:[255,250,240,1],forestgreen:[34,139,34,1],fuchsia:[255,0,255,1],gainsboro:[220,220,220,1],ghostwhite:[248,248,255,1],gold:[255,215,0,1],goldenrod:[218,165,32,1],gray:[128,128,128,1],green:[0,128,0,1],greenyellow:[173,255,47,1],grey:[128,128,128,1],honeydew:[240,255,240,1],hotpink:[255,105,180,1],indianred:[205,92,92,1],indigo:[75,0,130,1],ivory:[255,255,240,1],khaki:[240,230,140,1],lavender:[230,230,250,1],lavenderblush:[255,240,245,1],lawngreen:[124,252,0,1],lemonchiffon:[255,250,205,1],lightblue:[173,216,230,1],lightcoral:[240,128,128,1],lightcyan:[224,255,255,1],lightgoldenrodyellow:[250,250,210,1],lightgray:[211,211,211,1],lightgreen:[144,238,144,1],lightgrey:[211,211,211,1],lightpink:[255,182,193,1],lightsalmon:[255,160,122,1],lightseagreen:[32,178,170,1],lightskyblue:[135,206,250,1],lightslategray:[119,136,153,1],lightslategrey:[119,136,153,1],lightsteelblue:[176,196,222,1],lightyellow:[255,255,224,1],lime:[0,255,0,1],limegreen:[50,205,50,1],linen:[250,240,230,1],magenta:[255,0,255,1],maroon:[128,0,0,1],mediumaquamarine:[102,205,170,1],mediumblue:[0,0,205,1],mediumorchid:[186,85,211,1],mediumpurple:[147,112,219,1],mediumseagreen:[60,179,113,1],mediumslateblue:[123,104,238,1],mediumspringgreen:[0,250,154,1],mediumturquoise:[72,209,204,1],mediumvioletred:[199,21,133,1],midnightblue:[25,25,112,1],mintcream:[245,255,250,1],mistyrose:[255,228,225,1],moccasin:[255,228,181,1],navajowhite:[255,222,173,1],navy:[0,0,128,1],oldlace:[253,245,230,1],olive:[128,128,0,1],olivedrab:[107,142,35,1],orange:[255,165,0,1],orangered:[255,69,0,1],orchid:[218,112,214,1],palegoldenrod:[238,232,170,1],palegreen:[152,251,152,1],paleturquoise:[175,238,238,1],palevioletred:[219,112,147,1],papayawhip:[255,239,213,1],peachpuff:[255,218,185,1],peru:[205,133,63,1],pink:[255,192,203,1],plum:[221,160,221,1],powderblue:[176,224,230,1],purple:[128,0,128,1],red:[255,0,0,1],rosybrown:[188,143,143,1],royalblue:[65,105,225,1],saddlebrown:[139,69,19,1],salmon:[250,128,114,1],sandybrown:[244,164,96,1],seagreen:[46,139,87,1],seashell:[255,245,238,1],sienna:[160,82,45,1],silver:[192,192,192,1],skyblue:[135,206,235,1],slateblue:[106,90,205,1],slategray:[112,128,144,1],slategrey:[112,128,144,1],snow:[255,250,250,1],springgreen:[0,255,127,1],steelblue:[70,130,180,1],tan:[210,180,140,1],teal:[0,128,128,1],thistle:[216,191,216,1],tomato:[255,99,71,1],turquoise:[64,224,208,1],violet:[238,130,238,1],wheat:[245,222,179,1],white:[255,255,255,1],whitesmoke:[245,245,245,1],yellow:[255,255,0,1],yellowgreen:[154,205,50,1]};try{exports.parseCSSColor=parseCSSColor}catch(e){} -------------------------------------------------------------------------------- /package.json: -------------------------------------------------------------------------------- 1 | { 2 | "name": "gradientmaps", 3 | "title": "Gradientmaps.js", 4 | "version": "0.1.0", 5 | "author": { 6 | "name": "Adobe Systems Inc." 7 | }, 8 | "contributors": [ 9 | "Alan Greenblatt (http://blattchat.com)" 10 | ], 11 | "licenses": [ 12 | { 13 | "type": "Apache License 2.0" 14 | } 15 | ], 16 | "devDependencies": { 17 | "grunt": "~0.4.1", 18 | "grunt-contrib-jshint": "~0.6.0", 19 | "grunt-contrib-nodeunit": "~0.2.0", 20 | "grunt-contrib-uglify": "~0.2.2", 21 | "grunt-contrib-concat": "~0.3.0", 22 | "grunt-contrib-watch": "~0.4.4" 23 | } 24 | } 25 | -------------------------------------------------------------------------------- /src/LICENSE.MD: -------------------------------------------------------------------------------- 1 | Copyright [year] Adobe Systems Incorporated. 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IN NO EVENT SHALL THE 18 | // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 | // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 | // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 | // IN THE SOFTWARE. 22 | 23 | // http://www.w3.org/TR/css3-color/ 24 | var kCSSColorTable = { 25 | "transparent": [0,0,0,0], "aliceblue": [240,248,255,1], 26 | "antiquewhite": [250,235,215,1], "aqua": [0,255,255,1], 27 | "aquamarine": [127,255,212,1], "azure": [240,255,255,1], 28 | "beige": [245,245,220,1], "bisque": [255,228,196,1], 29 | "black": [0,0,0,1], "blanchedalmond": [255,235,205,1], 30 | "blue": [0,0,255,1], "blueviolet": [138,43,226,1], 31 | "brown": [165,42,42,1], "burlywood": [222,184,135,1], 32 | "cadetblue": [95,158,160,1], "chartreuse": [127,255,0,1], 33 | "chocolate": [210,105,30,1], "coral": [255,127,80,1], 34 | "cornflowerblue": [100,149,237,1], "cornsilk": [255,248,220,1], 35 | "crimson": [220,20,60,1], "cyan": [0,255,255,1], 36 | "darkblue": [0,0,139,1], "darkcyan": [0,139,139,1], 37 | "darkgoldenrod": [184,134,11,1], "darkgray": [169,169,169,1], 38 | "darkgreen": [0,100,0,1], "darkgrey": [169,169,169,1], 39 | "darkkhaki": [189,183,107,1], "darkmagenta": [139,0,139,1], 40 | "darkolivegreen": [85,107,47,1], "darkorange": [255,140,0,1], 41 | "darkorchid": [153,50,204,1], "darkred": [139,0,0,1], 42 | "darksalmon": [233,150,122,1], "darkseagreen": [143,188,143,1], 43 | "darkslateblue": [72,61,139,1], "darkslategray": [47,79,79,1], 44 | "darkslategrey": [47,79,79,1], "darkturquoise": [0,206,209,1], 45 | "darkviolet": [148,0,211,1], "deeppink": [255,20,147,1], 46 | "deepskyblue": [0,191,255,1], "dimgray": [105,105,105,1], 47 | "dimgrey": [105,105,105,1], "dodgerblue": [30,144,255,1], 48 | "firebrick": [178,34,34,1], "floralwhite": [255,250,240,1], 49 | "forestgreen": [34,139,34,1], "fuchsia": [255,0,255,1], 50 | "gainsboro": [220,220,220,1], "ghostwhite": [248,248,255,1], 51 | "gold": [255,215,0,1], "goldenrod": [218,165,32,1], 52 | "gray": [128,128,128,1], "green": [0,128,0,1], 53 | "greenyellow": [173,255,47,1], "grey": [128,128,128,1], 54 | "honeydew": [240,255,240,1], "hotpink": [255,105,180,1], 55 | "indianred": [205,92,92,1], "indigo": [75,0,130,1], 56 | "ivory": [255,255,240,1], "khaki": [240,230,140,1], 57 | "lavender": [230,230,250,1], "lavenderblush": [255,240,245,1], 58 | "lawngreen": [124,252,0,1], "lemonchiffon": [255,250,205,1], 59 | "lightblue": [173,216,230,1], "lightcoral": [240,128,128,1], 60 | "lightcyan": [224,255,255,1], "lightgoldenrodyellow": [250,250,210,1], 61 | "lightgray": [211,211,211,1], "lightgreen": [144,238,144,1], 62 | "lightgrey": [211,211,211,1], "lightpink": [255,182,193,1], 63 | "lightsalmon": [255,160,122,1], "lightseagreen": [32,178,170,1], 64 | "lightskyblue": [135,206,250,1], "lightslategray": [119,136,153,1], 65 | "lightslategrey": [119,136,153,1], "lightsteelblue": [176,196,222,1], 66 | "lightyellow": [255,255,224,1], "lime": [0,255,0,1], 67 | "limegreen": [50,205,50,1], "linen": [250,240,230,1], 68 | "magenta": [255,0,255,1], "maroon": [128,0,0,1], 69 | "mediumaquamarine": [102,205,170,1], "mediumblue": [0,0,205,1], 70 | "mediumorchid": [186,85,211,1], "mediumpurple": [147,112,219,1], 71 | "mediumseagreen": [60,179,113,1], "mediumslateblue": [123,104,238,1], 72 | "mediumspringgreen": [0,250,154,1], "mediumturquoise": [72,209,204,1], 73 | "mediumvioletred": [199,21,133,1], "midnightblue": [25,25,112,1], 74 | "mintcream": [245,255,250,1], "mistyrose": [255,228,225,1], 75 | "moccasin": [255,228,181,1], "navajowhite": [255,222,173,1], 76 | "navy": [0,0,128,1], "oldlace": [253,245,230,1], 77 | "olive": [128,128,0,1], "olivedrab": [107,142,35,1], 78 | "orange": [255,165,0,1], "orangered": [255,69,0,1], 79 | "orchid": [218,112,214,1], "palegoldenrod": [238,232,170,1], 80 | "palegreen": [152,251,152,1], "paleturquoise": [175,238,238,1], 81 | "palevioletred": [219,112,147,1], "papayawhip": [255,239,213,1], 82 | "peachpuff": [255,218,185,1], "peru": [205,133,63,1], 83 | "pink": [255,192,203,1], "plum": [221,160,221,1], 84 | "powderblue": [176,224,230,1], "purple": [128,0,128,1], 85 | "red": [255,0,0,1], "rosybrown": [188,143,143,1], 86 | "royalblue": [65,105,225,1], "saddlebrown": [139,69,19,1], 87 | "salmon": [250,128,114,1], "sandybrown": [244,164,96,1], 88 | "seagreen": [46,139,87,1], "seashell": [255,245,238,1], 89 | "sienna": [160,82,45,1], "silver": [192,192,192,1], 90 | "skyblue": [135,206,235,1], "slateblue": [106,90,205,1], 91 | "slategray": [112,128,144,1], "slategrey": [112,128,144,1], 92 | "snow": [255,250,250,1], "springgreen": [0,255,127,1], 93 | "steelblue": [70,130,180,1], "tan": [210,180,140,1], 94 | "teal": [0,128,128,1], "thistle": [216,191,216,1], 95 | "tomato": [255,99,71,1], "turquoise": [64,224,208,1], 96 | "violet": [238,130,238,1], "wheat": [245,222,179,1], 97 | "white": [255,255,255,1], "whitesmoke": [245,245,245,1], 98 | "yellow": [255,255,0,1], "yellowgreen": [154,205,50,1]} 99 | 100 | function clamp_css_byte(i) { // Clamp to integer 0 .. 255. 101 | i = Math.round(i); // Seems to be what Chrome does (vs truncation). 102 | return i < 0 ? 0 : i > 255 ? 255 : i; 103 | } 104 | 105 | function clamp_css_float(f) { // Clamp to float 0.0 .. 1.0. 106 | return f < 0 ? 0 : f > 1 ? 1 : f; 107 | } 108 | 109 | function parse_css_int(str) { // int or percentage. 110 | if (str[str.length - 1] === '%') 111 | return clamp_css_byte(parseFloat(str) / 100 * 255); 112 | return clamp_css_byte(parseInt(str)); 113 | } 114 | 115 | function parse_css_float(str) { // float or percentage. 116 | if (str[str.length - 1] === '%') 117 | return clamp_css_float(parseFloat(str) / 100); 118 | return clamp_css_float(parseFloat(str)); 119 | } 120 | 121 | function css_hue_to_rgb(m1, m2, h) { 122 | if (h < 0) h += 1; 123 | else if (h > 1) h -= 1; 124 | 125 | if (h * 6 < 1) return m1 + (m2 - m1) * h * 6; 126 | if (h * 2 < 1) return m2; 127 | if (h * 3 < 2) return m1 + (m2 - m1) * (2/3 - h) * 6; 128 | return m1; 129 | } 130 | 131 | function parseCSSColor(css_str) { 132 | // Remove all whitespace, not compliant, but should just be more accepting. 133 | var str = css_str.replace(/ /g, '').toLowerCase(); 134 | 135 | // Color keywords (and transparent) lookup. 136 | if (str in kCSSColorTable) return kCSSColorTable[str].slice(); // dup. 137 | 138 | // #abc and #abc123 syntax. 139 | if (str[0] === '#') { 140 | if (str.length === 4) { 141 | var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing. 142 | if (!(iv >= 0 && iv <= 0xfff)) return null; // Covers NaN. 143 | return [((iv & 0xf00) >> 4) | ((iv & 0xf00) >> 8), 144 | (iv & 0xf0) | ((iv & 0xf0) >> 4), 145 | (iv & 0xf) | ((iv & 0xf) << 4), 146 | 1]; 147 | } else if (str.length === 7) { 148 | var iv = parseInt(str.substr(1), 16); // TODO(deanm): Stricter parsing. 149 | if (!(iv >= 0 && iv <= 0xffffff)) return null; // Covers NaN. 150 | return [(iv & 0xff0000) >> 16, 151 | (iv & 0xff00) >> 8, 152 | iv & 0xff, 153 | 1]; 154 | } 155 | 156 | return null; 157 | } 158 | 159 | var op = str.indexOf('('), ep = str.indexOf(')'); 160 | if (op !== -1 && ep + 1 === str.length) { 161 | var fname = str.substr(0, op); 162 | var params = str.substr(op+1, ep-(op+1)).split(','); 163 | var alpha = 1; // To allow case fallthrough. 164 | switch (fname) { 165 | case 'rgba': 166 | if (params.length !== 4) return null; 167 | alpha = parse_css_float(params.pop()); 168 | // Fall through. 169 | case 'rgb': 170 | if (params.length !== 3) return null; 171 | return [parse_css_int(params[0]), 172 | parse_css_int(params[1]), 173 | parse_css_int(params[2]), 174 | alpha]; 175 | case 'hsla': 176 | if (params.length !== 4) return null; 177 | alpha = parse_css_float(params.pop()); 178 | // Fall through. 179 | case 'hsl': 180 | if (params.length !== 3) return null; 181 | var h = (((parseFloat(params[0]) % 360) + 360) % 360) / 360; // 0 .. 1 182 | // NOTE(deanm): According to the CSS spec s/l should only be 183 | // percentages, but we don't bother and let float or percentage. 184 | var s = parse_css_float(params[1]); 185 | var l = parse_css_float(params[2]); 186 | var m2 = l <= 0.5 ? l * (s + 1) : l + s - l * s; 187 | var m1 = l * 2 - m2; 188 | return [clamp_css_byte(css_hue_to_rgb(m1, m2, h+1/3) * 255), 189 | clamp_css_byte(css_hue_to_rgb(m1, m2, h) * 255), 190 | clamp_css_byte(css_hue_to_rgb(m1, m2, h-1/3) * 255), 191 | alpha]; 192 | default: 193 | return null; 194 | } 195 | } 196 | 197 | return null; 198 | } 199 | 200 | try { exports.parseCSSColor = parseCSSColor } catch(e) { } 201 | -------------------------------------------------------------------------------- /src/gm-library.js: -------------------------------------------------------------------------------- 1 | /* 2 | Copyright 2013 Adobe Systems Inc. 3 | 4 | Licensed under the Apache License, Version 2.0 (the "License"); 5 | you may not use this file except in compliance with the License. 6 | You may obtain a copy of the License at 7 | 8 | http://www.apache.org/licenses/LICENSE-2.0 9 | 10 | Unless required by applicable law or agreed to in writing, software 11 | distributed under the License is distributed on an "AS IS" BASIS, 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | See the License for the specific language governing permissions and limitations under the License. 14 | */ 15 | 16 | /* 17 | Gradient Maps support 18 | Author: Alan Greenblatt (blatt@adobe.com, @agreenblatt, blattchat.com) 19 | */ 20 | 21 | window.GradientMaps = function(scope) { 22 | function GradientMaps() { 23 | this.init(); 24 | } 25 | 26 | GradientMaps.prototype = { 27 | init: function() { 28 | }, 29 | 30 | generateID: function() { 31 | this.previousID = this.previousID + 1 || 0; 32 | return this.previousID; 33 | }, 34 | 35 | calcStopsArray: function(stopsDecl) { 36 | /* 37 | * Each stop consists of a color and an optional percentage or length 38 | * stops: [, ] 39 | * : color [ | ]? 40 | * 41 | * If the first color-stop does not have a length or percentage, it defaults to 0% 42 | * If the last color-stop does not have a length or percentage, it defaults to 100% 43 | * If a color-stop, other than the first or last, does not have a length or percentage, it is assigned the position half way between the previous and the next stop. 44 | * If a color-stop, other than the first or last, has a specified position less than the previous stop, its position is changed to be equal to the largest specified position of any prior color-stop. 45 | */ 46 | 47 | var matches = stopsDecl.match(/(((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(0?\.\d+|\d{1,3}%))?)/g); 48 | 49 | var stopsDeclArr = stopsDecl.split(','); 50 | var stops = []; 51 | 52 | matches.forEach(function(colorStop) { 53 | var colorStopMatches = colorStop.match(/(?:((rgb|hsl)a?\(\d{1,3},\s*\d{1,3},\s*\d{1,3}(?:,\s*0?\.?\d+)?\)|\w+|#[0-9a-fA-F]{1,6})(\s+(?:0?\.\d+|\d{1,3}%))?)/); 54 | if (colorStopMatches && colorStopMatches.length >= 4) { 55 | posMatch = colorStopMatches[3]; 56 | stops.push({ 57 | color: parseCSSColor(colorStopMatches[1]), 58 | pos: posMatch ? parse_css_float(posMatch) * 100 : null 59 | }) 60 | } 61 | }); 62 | 63 | /* 64 | * Need to calculate the positions where they aren't specified. 65 | * In the case of the first and last stop, we may even have to add a new stop. 66 | * 67 | * Go through the array of stops, finding ones where the position is not specified. 68 | * Then, find the next specified position or terminate on the last stop. 69 | * Finally, evenly distribute the unspecified positions, with the first stop at 0 70 | * and the last stop at 100. 71 | */ 72 | 73 | if (stops.length >= 1) { 74 | // If the first stop's position is not specified, set it to 0. 75 | var stop = stops[0]; 76 | if (!stop.pos) 77 | stop.pos = 0; 78 | else 79 | stop.pos = Math.min(100, Math.max(0, stop.pos)); 80 | 81 | var currentPos = stop.pos; 82 | 83 | // If the last stop's position is not specified, set it to 100. 84 | stop = stops[stops.length-1]; 85 | if (!stop.pos) 86 | stop.pos = 100; 87 | else 88 | stop.pos = Math.min(100, Math.max(0, stop.pos)); 89 | 90 | // Make sure that all positions are in ascending order 91 | for (var i = 1; i < stops.length-1; i++) { 92 | stop = stops[i]; 93 | if (stop.pos && stop.pos < currentPos) 94 | stop.pos = currentPos; 95 | if (stop.pos > 100) stop.pos = 100; 96 | currentPos = stop.pos; 97 | } 98 | 99 | // Find any runs of unpositioned stops and calculate them 100 | var i = 1; 101 | while (i < (stops.length-1)) { 102 | if (!stops[i].pos) { 103 | // Find the next positioned stop. You'll always have at least the 104 | // last stop at 100. 105 | for (var j = i+1; j < stops.length; j++) { 106 | if (stops[j].pos) 107 | break; 108 | } 109 | 110 | var startPos = stops[i-1].pos; 111 | var endPos = stops[j].pos; 112 | var nStops = j - 1 + 1; 113 | 114 | var delta = Math.round((endPos - startPos) / nStops); 115 | while (i < j) { 116 | stops[i].pos = stops[i-1].pos + delta; 117 | i++; 118 | } 119 | } 120 | 121 | i++; 122 | } 123 | 124 | if (stops[0].pos != 0) { 125 | stops.unshift({ 126 | color: stops[0].color, 127 | pos: 0 128 | }); 129 | } 130 | 131 | if (stops[stops.length-1].pos != 100) { 132 | stops.push({ 133 | color: stops[stops.length-1].color, 134 | pos: 100 135 | }) 136 | } 137 | } 138 | 139 | return stops; 140 | }, 141 | 142 | findMatchingDistributedNSegs: function(stops) { 143 | var maxNumSegs = 100; 144 | var matched = false; 145 | for (var nSegs = 1; !matched && nSegs <= maxNumSegs; nSegs++) { 146 | var segSize = maxNumSegs / nSegs; 147 | matched = true; 148 | for (var i = 1; i < stops.length-1; i++) { 149 | var pos = stops[i].pos; 150 | if (pos < segSize) { 151 | matched = false; 152 | break; 153 | } 154 | var rem = pos % segSize; 155 | var maxDiff = 1.0; 156 | if (!(rem < maxDiff || (segSize - rem) < maxDiff)) { 157 | matched = false; 158 | break; 159 | } 160 | } 161 | 162 | if (matched) 163 | return nSegs; 164 | } 165 | 166 | return nSegs; 167 | }, 168 | 169 | calcDistributedColors: function(stops, nSegs) { 170 | var colors = [stops[0].color]; 171 | 172 | var segSize = 100 / nSegs; 173 | for (var i = 1; i < stops.length-1; i++) { 174 | var stop = stops[i]; 175 | var n = Math.round(stop.pos / segSize); 176 | colors[n] = stop.color; 177 | } 178 | 179 | colors[nSegs] = stops[stops.length-1].color; 180 | 181 | var i = 1; 182 | while (i < colors.length) { 183 | if (!colors[i]) { 184 | for (var j = i+1; j < colors.length; j++) { 185 | if (colors[j]) 186 | break; 187 | } 188 | 189 | // Need to evenly distribute colors stops from svgStop[i-1] to svgStop[j] 190 | 191 | var startColor = colors[i-1]; 192 | var r = startColor[0]; 193 | var g = startColor[1]; 194 | var b = startColor[2]; 195 | var a = startColor[3]; 196 | 197 | var endColor = colors[j]; 198 | 199 | var nSegs = j - i + 1; 200 | var dr = (endColor[0] - r) / nSegs; 201 | var dg = (endColor[1] - g) / nSegs; 202 | var db = (endColor[2] - b) / nSegs; 203 | var da = (endColor[3] - a) / nSegs; 204 | 205 | while (i < j) { 206 | r += dr; 207 | g += dg; 208 | b += db; 209 | a += da; 210 | colors[i] = [r, g, b, a]; 211 | i++; 212 | } 213 | } 214 | i++; 215 | } 216 | 217 | return colors; 218 | }, 219 | 220 | addElement: function(doc, parent, tagname, ns, attributes) { 221 | var elem = ns ? doc.createElementNS(ns, tagname) : doc.createElement(tagname); 222 | if (attributes) { 223 | Object.keys(attributes).forEach(function(key, index, keys) { 224 | elem.setAttribute(key, attributes[key]); 225 | }); 226 | //elem.setAttribute(attr.name, attr.value); 227 | } 228 | 229 | if (parent) parent.appendChild(elem); 230 | return elem; 231 | }, 232 | 233 | addSVGComponentTransferFilter: function(elem, colors) { 234 | var filter = null; 235 | var svg = null; 236 | var svgns = 'http://www.w3.org/2000/svg'; 237 | var filterID = elem.getAttribute('data-gradientmap-filter'); 238 | 239 | var svgIsNew = false; 240 | 241 | var doc = elem.ownerDocument; 242 | 243 | if (filterID) { 244 | filter = doc.getElementById(filterID); 245 | if (filter) { 246 | // Remove old component transfer function 247 | var componentTransfers = filter.getElementsByTagNameNS(svgns, 'feComponentTransfer'); 248 | if (componentTransfers) { 249 | for (var i = componentTransfers.length-1; i >= 0; --i) 250 | filter.removeChild(componentTransfers[i]); 251 | 252 | svg = filter.parentElement; 253 | } 254 | } 255 | } 256 | 257 | // The last thing to be set previously is 'svg'. If that is still null, that will handle any errors 258 | if (!svg) { 259 | var svg = this.addElement(doc, null, 'svg', svgns, { 260 | 'version': '1.1', 261 | 'width': 0, 262 | 'height': 0 263 | }); 264 | 265 | filterID = 'filter-' + this.generateID(); 266 | filter = this.addElement(doc, svg, 'filter', svgns, {'id': filterID}); 267 | elem.setAttribute('data-gradientmap-filter', filterID); 268 | 269 | // First, apply a color matrix to turn the source into a grayscale 270 | var colorMatrix = this.addElement(doc, filter, 'feColorMatrix', svgns, { 271 | 'type': 'matrix', 272 | 'values': '0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0.2126 0.7152 0.0722 0 0 0 0 0 1 0', 273 | 'result': 'gray' 274 | }); 275 | 276 | svgIsNew = true; 277 | } 278 | 279 | // Now apply a component transfer to remap the colors 280 | var componentTransfer = this.addElement(doc, filter, 'feComponentTransfer', svgns, {'color-interpolation-filters': 'sRGB'}); 281 | 282 | var redTableValues = ""; 283 | var greenTableValues = ""; 284 | var blueTableValues = ""; 285 | var alphaTableValues = ""; 286 | 287 | colors.forEach(function(color, index, colors) { 288 | redTableValues += (color[0] / 255.0 + " "); 289 | greenTableValues += (color[1] / 255.0 + " "); 290 | blueTableValues += (color[2] / 255.0 + " "); 291 | alphaTableValues += (color[3] + " "); 292 | }); 293 | 294 | this.addElement(doc, componentTransfer, 'feFuncR', svgns, {'type': 'table', 'tableValues': redTableValues.trim()}); 295 | this.addElement(doc, componentTransfer, 'feFuncG', svgns, {'type': 'table', 'tableValues': greenTableValues.trim()}); 296 | this.addElement(doc, componentTransfer, 'feFuncB', svgns, {'type': 'table', 'tableValues': blueTableValues.trim()}); 297 | this.addElement(doc, componentTransfer, 'feFuncA', svgns, {'type': 'table', 'tableValues': alphaTableValues.trim()}); 298 | 299 | if (svgIsNew) 300 | elem.parentElement.insertBefore(svg, elem); 301 | 302 | var filterDecl = 'url(#' + filterID + ')'; 303 | elem.style['-webkit-filter'] = filterDecl; 304 | elem.style['filter'] = filterDecl; 305 | 306 | //elem.setAttribute('style', '-webkit-filter: url(#' + filterID + '); filter: url(#' + filterID + ')'); 307 | }, 308 | 309 | applyGradientMap: function(elem, gradient) { 310 | var stops = this.calcStopsArray(gradient); 311 | var nSegs = this.findMatchingDistributedNSegs(stops); 312 | var colors = this.calcDistributedColors(stops, nSegs); 313 | 314 | this.addSVGComponentTransferFilter(elem, colors); 315 | }, 316 | 317 | removeGradientMap: function(elem) { 318 | var filterID = elem.getAttribute('data-gradientmap-filter'); 319 | if (filterID) { 320 | var doc = elem.ownerDocument; 321 | var filter = doc.getElementById(filterID); 322 | if (filter) { 323 | var svg = filter.parentElement; 324 | svg.removeChild(filter); 325 | if (svg.childNodes.length <= 0) { 326 | var parent = svg.parentElement; 327 | parent.removeChild(svg); 328 | } 329 | } 330 | elem.removeAttribute('data-gradientmap-filter'); 331 | elem.style['-webkit-filter'] = ''; 332 | elem.style['filter'] = ''; 333 | } 334 | }, 335 | } 336 | 337 | return new GradientMaps(); 338 | }(window); 339 | --------------------------------------------------------------------------------