├── .babelrc ├── .editorconfig ├── .eslintrc ├── .gitignore ├── LICENSE.txt ├── README.md ├── demo.gif ├── dist ├── flickity-transformer.js ├── flickity-transformer.pkgd.js └── flickity-transformer.pkgd.min.js ├── package-lock.json ├── package.json ├── rollup.js ├── src └── index.js └── test ├── functional ├── flickity-transformer.js ├── index.html └── multiple-instances.html └── index.js /.babelrc: -------------------------------------------------------------------------------- 1 | { 2 | "presets": ["es2015"] 3 | } 4 | -------------------------------------------------------------------------------- /.editorconfig: -------------------------------------------------------------------------------- 1 | root = true 2 | 3 | [*] 4 | charset = utf-8 5 | indent_style = space 6 | indent_size = 2 7 | end_of_line = lf 8 | insert_final_newline = true 9 | trim_trailing_whitespace = true 10 | -------------------------------------------------------------------------------- /.eslintrc: -------------------------------------------------------------------------------- 1 | { 2 | "extends": "standard", 3 | "env": { 4 | "node": true 5 | } 6 | } 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | node_modules 2 | npm-debug.log 3 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | {one line to give the program's name and a brief idea of what it does.} 635 | Copyright (C) {year} {name of author} 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | {project} Copyright (C) {year} {fullname} 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Flickity Transformer 2 | 3 | 4 | 5 | 6 | 7 | :robot: **I'm no longer supporting this project, please feel free to use my work to make something neat.** :robot: 8 | 9 | 10 | An interface for declaring granular transform effects for [Flickity](http://flickity.metafizzy.co/). 11 | 12 | [![Demo image](demo.gif)](http://codepen.io/elcontraption/full/RGPboR/) 13 | 14 | - [Installation](#installation) 15 | - [Usage](#usage) 16 | - [Transforms](#transforms) 17 | - [Default units](#default-units) 18 | - [Examples](#examples) 19 | - [Contributing](#contributing) 20 | 21 | ## Installation 22 | Via NPM: 23 | ```bash 24 | yarn add flickity-transformer 25 | # or 26 | npm i --save flickity-transformer 27 | ``` 28 | 29 | Via download: 30 | - Minified: [flickity-transformer.pkgd.min.js](https://unpkg.com/flickity-transformer/dist/flickity-transformer.pkgd.min.js) 31 | - Un-minified: [flickity-transformer.pkgd.js](https://unpkg.com/flickity-transformer/dist/flickity-transformer.pkgd.js) 32 | 33 | CDN: 34 | ```html 35 | 36 | 37 | 38 | 39 | 40 | ``` 41 | 42 | ## Usage 43 | Create a new FlickityTransformer, passing in your Flickity instance and an array of [transform objects](#transforms). Transforms will be applied to each Flickity cell in the order they are declared. 44 | 45 | ```js 46 | var Flickity = require('flickity') 47 | var FlickityTransformer = require('flickity-transformer') 48 | 49 | var flkty = new Flickity('.carousel', { 50 | // options 51 | }) 52 | 53 | var transformer = new FlickityTransformer(flkty, [ 54 | { 55 | name: 'scale', // Let's scale your cells... 56 | stops: [ 57 | [-300, 0.5], // at -300px, slides will be scaled to 0.5 58 | [0, 1], // at the home position, slides will be full size 59 | [300, 0.5] // at 300px, slides will be half size again 60 | ] 61 | }, 62 | { 63 | name: 'rotate', // and add a little rotation... 64 | unit: 'rad' // use a unit other than the default 65 | stops: [ 66 | [-300, -1], // rotate slides to the left by 1 radian 67 | [0, 0], // they'll be straight at center 68 | [300, 1] // and rotated to the right 69 | // Add as many stops as you need 70 | ] 71 | } 72 | ]) 73 | ``` 74 | 75 | ### Transforms 76 | Each object in the transforms array requires at least two properties: `name` and `stops`. Each stop in `stops` is an array with two values: x position in pixels relative to the home position of your carousel, and the transform value to apply at that position. 77 | 78 | | property | type | value | 79 | | ------------- | --------- | ----------------- | 80 | | `name` | `String` | (required) The [transform function name](https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function) 81 | | `stops` | `Array` | (required) An array of at least two transform stops. | 82 | | `unit` | `String` | (optional) Override the [default unit](#default-units). | 83 | 84 | ```js 85 | // Example: rotate cells between -1rad at -300px, and 1rad at 300px: 86 | { 87 | name: 'rotate', 88 | unit: 'rad', 89 | stops: [ 90 | [-300, -1], 91 | [300, 1] 92 | ] 93 | } 94 | ``` 95 | 96 | ### Default units 97 | ```js 98 | const units = { 99 | perspective: 'px', 100 | rotate: 'deg', 101 | rotateX: 'deg', 102 | rotateY: 'deg', 103 | rotateZ: 'deg', 104 | skew: 'deg', 105 | skewX: 'deg', 106 | skewY: 'deg', 107 | translateX: 'px', 108 | translateY: 'px', 109 | translateZ: 'px' 110 | } 111 | ``` 112 | 113 | ## Examples 114 | - [Basic CodePen demo](http://codepen.io/elcontraption/pen/RGPboR) 115 | - [Simple cover-flow example](http://codepen.io/elcontraption/pen/jrdOqr) 116 | 117 | ## Contributing 118 | Contributions are welcome. Top priorities are to support `wrapAround: true` and units other than pixels for stop positions. See [issues](https://github.com/elcontraption/flickity-transformer/issues) for details. To get up and running: 119 | 120 | ```bash 121 | # Install dependencies 122 | $ npm install 123 | 124 | # Lint, test & build 125 | $ npm run build 126 | 127 | # Run functional test in the browser 128 | $ npm run functional 129 | 130 | # See various scripts in package.json 131 | ``` 132 | Uses [JavaScript Standard Style](http://standardjs.com/). 133 | -------------------------------------------------------------------------------- /demo.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/elcontraption/flickity-transformer/74ecd18258fac5749191537f3cb7dc7308503d5c/demo.gif -------------------------------------------------------------------------------- /dist/flickity-transformer.js: -------------------------------------------------------------------------------- 1 | 'use strict'; 2 | 3 | function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; } 4 | 5 | var polylinearScale = _interopDefault(require('polylinear-scale')); 6 | 7 | var asyncGenerator = function () { 8 | function AwaitValue(value) { 9 | this.value = value; 10 | } 11 | 12 | function AsyncGenerator(gen) { 13 | var front, back; 14 | 15 | function send(key, arg) { 16 | return new Promise(function (resolve, reject) { 17 | var request = { 18 | key: key, 19 | arg: arg, 20 | resolve: resolve, 21 | reject: reject, 22 | next: null 23 | }; 24 | 25 | if (back) { 26 | back = back.next = request; 27 | } else { 28 | front = back = request; 29 | resume(key, arg); 30 | } 31 | }); 32 | } 33 | 34 | function resume(key, arg) { 35 | try { 36 | var result = gen[key](arg); 37 | var value = result.value; 38 | 39 | if (value instanceof AwaitValue) { 40 | Promise.resolve(value.value).then(function (arg) { 41 | resume("next", arg); 42 | }, function (arg) { 43 | resume("throw", arg); 44 | }); 45 | } else { 46 | settle(result.done ? "return" : "normal", result.value); 47 | } 48 | } catch (err) { 49 | settle("throw", err); 50 | } 51 | } 52 | 53 | function settle(type, value) { 54 | switch (type) { 55 | case "return": 56 | front.resolve({ 57 | value: value, 58 | done: true 59 | }); 60 | break; 61 | 62 | case "throw": 63 | front.reject(value); 64 | break; 65 | 66 | default: 67 | front.resolve({ 68 | value: value, 69 | done: false 70 | }); 71 | break; 72 | } 73 | 74 | front = front.next; 75 | 76 | if (front) { 77 | resume(front.key, front.arg); 78 | } else { 79 | back = null; 80 | } 81 | } 82 | 83 | this._invoke = send; 84 | 85 | if (typeof gen.return !== "function") { 86 | this.return = undefined; 87 | } 88 | } 89 | 90 | if (typeof Symbol === "function" && Symbol.asyncIterator) { 91 | AsyncGenerator.prototype[Symbol.asyncIterator] = function () { 92 | return this; 93 | }; 94 | } 95 | 96 | AsyncGenerator.prototype.next = function (arg) { 97 | return this._invoke("next", arg); 98 | }; 99 | 100 | AsyncGenerator.prototype.throw = function (arg) { 101 | return this._invoke("throw", arg); 102 | }; 103 | 104 | AsyncGenerator.prototype.return = function (arg) { 105 | return this._invoke("return", arg); 106 | }; 107 | 108 | return { 109 | wrap: function (fn) { 110 | return function () { 111 | return new AsyncGenerator(fn.apply(this, arguments)); 112 | }; 113 | }, 114 | await: function (value) { 115 | return new AwaitValue(value); 116 | } 117 | }; 118 | }(); 119 | 120 | var classCallCheck = function (instance, Constructor) { 121 | if (!(instance instanceof Constructor)) { 122 | throw new TypeError("Cannot call a class as a function"); 123 | } 124 | }; 125 | 126 | var createClass = function () { 127 | function defineProperties(target, props) { 128 | for (var i = 0; i < props.length; i++) { 129 | var descriptor = props[i]; 130 | descriptor.enumerable = descriptor.enumerable || false; 131 | descriptor.configurable = true; 132 | if ("value" in descriptor) descriptor.writable = true; 133 | Object.defineProperty(target, descriptor.key, descriptor); 134 | } 135 | } 136 | 137 | return function (Constructor, protoProps, staticProps) { 138 | if (protoProps) defineProperties(Constructor.prototype, protoProps); 139 | if (staticProps) defineProperties(Constructor, staticProps); 140 | return Constructor; 141 | }; 142 | }(); 143 | 144 | /** 145 | * Module name 146 | * 147 | * @type {String} 148 | */ 149 | var name = 'FlickityTransformer'; 150 | 151 | /** 152 | * Set default units 153 | * 154 | * @type {Object} 155 | */ 156 | var units = { 157 | perspective: 'px', 158 | rotate: 'deg', 159 | rotateX: 'deg', 160 | rotateY: 'deg', 161 | rotateZ: 'deg', 162 | skew: 'deg', 163 | skewX: 'deg', 164 | skewY: 'deg', 165 | translateX: 'px', 166 | translateY: 'px', 167 | translateZ: 'px' 168 | }; 169 | 170 | var FlickityTransformer = function () { 171 | function FlickityTransformer(flickity, transforms) { 172 | classCallCheck(this, FlickityTransformer); 173 | 174 | this.flickity = flickity; 175 | this.transforms = transforms; 176 | this.cellElements = flickity.getCellElements(); 177 | 178 | this.init(); 179 | } 180 | 181 | /** 182 | * Initialize 183 | */ 184 | 185 | 186 | createClass(FlickityTransformer, [{ 187 | key: 'init', 188 | value: function init() { 189 | var _this = this; 190 | 191 | this.createScaleFunctions(); 192 | 193 | // Apply initial transforms 194 | this.flickity.slides.forEach(this.applyTransforms.bind(this)); 195 | 196 | // Apply again on scroll 197 | this.flickity.on('scroll', function () { 198 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 199 | }); 200 | 201 | // Require a version of Flickity supporting `scroll` event 202 | if (this.flickity._events.scroll === undefined) { 203 | throw new Error(name + ' requires the first parameter to be a instance of Flickity that supports the `scroll` event (version 2+)'); 204 | } 205 | 206 | // Apply again on resize 207 | window.addEventListener('resize', function () { 208 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 209 | }); 210 | } 211 | 212 | /** 213 | * Create scale functions for each transform 214 | */ 215 | 216 | }, { 217 | key: 'createScaleFunctions', 218 | value: function createScaleFunctions() { 219 | this.transforms.forEach(function (transform) { 220 | var domain = []; 221 | var range = []; 222 | 223 | transform.stops.forEach(function (stop) { 224 | domain.push(stop[0]); 225 | range.push(stop[1]); 226 | }); 227 | 228 | // Create unique scale function 229 | transform.scale = function (value) { 230 | return polylinearScale(domain, range, true)(value); 231 | }; 232 | }); 233 | } 234 | 235 | /** 236 | * Apply transforms to an element 237 | * 238 | * @param {Object} el Flickity element 239 | * @param {Integer} i Element index 240 | */ 241 | 242 | }, { 243 | key: 'applyTransforms', 244 | value: function applyTransforms(slide, i) { 245 | var _this2 = this; 246 | 247 | var el = this.cellElements[i]; 248 | var txs = []; 249 | var xPos = void 0; 250 | 251 | // Get proximity to carousel home 252 | xPos = slide.parent.x < 0 ? slide.target - Math.abs(slide.parent.x) : slide.target + slide.parent.x; 253 | 254 | // Make transforms 255 | this.transforms.forEach(function (transform) { 256 | txs.push(_this2.makeTransform(transform, xPos)); 257 | }); 258 | 259 | // Apply transforms 260 | el.style.transform = txs.join(' '); 261 | } 262 | 263 | /** 264 | * Make an individual transform rule 265 | * 266 | * @param {Object} transform The transform declaration 267 | * @param {Number} xPos Element's proximity to carousel home 268 | * @return {String} 269 | */ 270 | 271 | }, { 272 | key: 'makeTransform', 273 | value: function makeTransform(transform, xPos) { 274 | var name = transform.name; 275 | // const unit = units[name] || '' 276 | var unit = transform.unit || units[name] || ''; 277 | var tx = transform.scale(xPos); 278 | 279 | return name + '(' + tx + unit + ')'; 280 | } 281 | }]); 282 | return FlickityTransformer; 283 | }(); 284 | 285 | module.exports = FlickityTransformer; -------------------------------------------------------------------------------- /dist/flickity-transformer.pkgd.js: -------------------------------------------------------------------------------- 1 | var FlickityTransformer = (function () { 2 | 'use strict'; 3 | 4 | function createCommonjsModule(fn, module) { 5 | return module = { exports: {} }, fn(module, module.exports), module.exports; 6 | } 7 | 8 | var index = createCommonjsModule(function (module) { 9 | var config = {}; 10 | 11 | /** 12 | * The compiled scale to return 13 | * 14 | * @param {Number} value The number to scale 15 | * @return {Number} The result 16 | */ 17 | function scale(value) { 18 | var domains = config.domain; 19 | var ranges = config.range; 20 | var rangeMin; 21 | var rangeMax; 22 | var domain; 23 | var range; 24 | var ratio; 25 | var result; 26 | var i = 0; 27 | 28 | /* eslint-disable no-sequences */ 29 | while (i < domains.length - 1) { 30 | if (value >= domains[i] && value <= domains[i + 1]) { 31 | domain = [domains[i], domains[i + 1]], range = [ranges[i], ranges[i + 1]]; 32 | break; 33 | } 34 | i++; 35 | } 36 | 37 | // Value is outside given domain 38 | if (domain === undefined) { 39 | if (value < domains[0]) { 40 | domain = [domains[0], domains[1]]; 41 | range = [ranges[0], ranges[1]]; 42 | } else { 43 | domain = [domains[domains.length - 2], domains[domains.length - 1]]; 44 | range = [ranges[ranges.length - 2], ranges[ranges.length - 1]]; 45 | } 46 | } 47 | 48 | ratio = (range[1] - range[0]) / (domain[1] - domain[0]); 49 | result = range[0] + ratio * (value - domain[0]); 50 | 51 | if (config.clamp) { 52 | rangeMin = Math.min(range[0], range[1]); 53 | rangeMax = Math.max(range[0], range[1]); 54 | result = Math.min(rangeMax, Math.max(rangeMin, result)); 55 | } 56 | 57 | return result; 58 | } 59 | 60 | /** 61 | * A polylinear scale 62 | * 63 | * Supports multiple piecewise linear scales that divide a continuous domain and range. 64 | * 65 | * @param {Array} domain Two or more numbers 66 | * @param {Array} range Numbers equivalent to number in `domain` 67 | * @param {Boolean} clamp Enables or disables clamping 68 | * @return {Function} Scale function 69 | */ 70 | function polylinearScale(domain, range, clamp) { 71 | domain = domain || [0, 1]; 72 | range = range || [0, 1]; 73 | clamp = clamp || false; 74 | 75 | if (domain.length !== range.length) { 76 | throw new Error('polylinearScale requires domain and range to have an equivalent number of values'); 77 | } 78 | 79 | config.domain = domain; 80 | config.range = range; 81 | config.clamp = clamp; 82 | 83 | return scale; 84 | } 85 | 86 | module.exports = polylinearScale; 87 | }); 88 | 89 | var asyncGenerator = function () { 90 | function AwaitValue(value) { 91 | this.value = value; 92 | } 93 | 94 | function AsyncGenerator(gen) { 95 | var front, back; 96 | 97 | function send(key, arg) { 98 | return new Promise(function (resolve, reject) { 99 | var request = { 100 | key: key, 101 | arg: arg, 102 | resolve: resolve, 103 | reject: reject, 104 | next: null 105 | }; 106 | 107 | if (back) { 108 | back = back.next = request; 109 | } else { 110 | front = back = request; 111 | resume(key, arg); 112 | } 113 | }); 114 | } 115 | 116 | function resume(key, arg) { 117 | try { 118 | var result = gen[key](arg); 119 | var value = result.value; 120 | 121 | if (value instanceof AwaitValue) { 122 | Promise.resolve(value.value).then(function (arg) { 123 | resume("next", arg); 124 | }, function (arg) { 125 | resume("throw", arg); 126 | }); 127 | } else { 128 | settle(result.done ? "return" : "normal", result.value); 129 | } 130 | } catch (err) { 131 | settle("throw", err); 132 | } 133 | } 134 | 135 | function settle(type, value) { 136 | switch (type) { 137 | case "return": 138 | front.resolve({ 139 | value: value, 140 | done: true 141 | }); 142 | break; 143 | 144 | case "throw": 145 | front.reject(value); 146 | break; 147 | 148 | default: 149 | front.resolve({ 150 | value: value, 151 | done: false 152 | }); 153 | break; 154 | } 155 | 156 | front = front.next; 157 | 158 | if (front) { 159 | resume(front.key, front.arg); 160 | } else { 161 | back = null; 162 | } 163 | } 164 | 165 | this._invoke = send; 166 | 167 | if (typeof gen.return !== "function") { 168 | this.return = undefined; 169 | } 170 | } 171 | 172 | if (typeof Symbol === "function" && Symbol.asyncIterator) { 173 | AsyncGenerator.prototype[Symbol.asyncIterator] = function () { 174 | return this; 175 | }; 176 | } 177 | 178 | AsyncGenerator.prototype.next = function (arg) { 179 | return this._invoke("next", arg); 180 | }; 181 | 182 | AsyncGenerator.prototype.throw = function (arg) { 183 | return this._invoke("throw", arg); 184 | }; 185 | 186 | AsyncGenerator.prototype.return = function (arg) { 187 | return this._invoke("return", arg); 188 | }; 189 | 190 | return { 191 | wrap: function (fn) { 192 | return function () { 193 | return new AsyncGenerator(fn.apply(this, arguments)); 194 | }; 195 | }, 196 | await: function (value) { 197 | return new AwaitValue(value); 198 | } 199 | }; 200 | }(); 201 | 202 | var classCallCheck = function (instance, Constructor) { 203 | if (!(instance instanceof Constructor)) { 204 | throw new TypeError("Cannot call a class as a function"); 205 | } 206 | }; 207 | 208 | var createClass = function () { 209 | function defineProperties(target, props) { 210 | for (var i = 0; i < props.length; i++) { 211 | var descriptor = props[i]; 212 | descriptor.enumerable = descriptor.enumerable || false; 213 | descriptor.configurable = true; 214 | if ("value" in descriptor) descriptor.writable = true; 215 | Object.defineProperty(target, descriptor.key, descriptor); 216 | } 217 | } 218 | 219 | return function (Constructor, protoProps, staticProps) { 220 | if (protoProps) defineProperties(Constructor.prototype, protoProps); 221 | if (staticProps) defineProperties(Constructor, staticProps); 222 | return Constructor; 223 | }; 224 | }(); 225 | 226 | /** 227 | * Module name 228 | * 229 | * @type {String} 230 | */ 231 | var name = 'FlickityTransformer'; 232 | 233 | /** 234 | * Set default units 235 | * 236 | * @type {Object} 237 | */ 238 | var units = { 239 | perspective: 'px', 240 | rotate: 'deg', 241 | rotateX: 'deg', 242 | rotateY: 'deg', 243 | rotateZ: 'deg', 244 | skew: 'deg', 245 | skewX: 'deg', 246 | skewY: 'deg', 247 | translateX: 'px', 248 | translateY: 'px', 249 | translateZ: 'px' 250 | }; 251 | 252 | var FlickityTransformer = function () { 253 | function FlickityTransformer(flickity, transforms) { 254 | classCallCheck(this, FlickityTransformer); 255 | 256 | this.flickity = flickity; 257 | this.transforms = transforms; 258 | this.cellElements = flickity.getCellElements(); 259 | 260 | this.init(); 261 | } 262 | 263 | /** 264 | * Initialize 265 | */ 266 | 267 | 268 | createClass(FlickityTransformer, [{ 269 | key: 'init', 270 | value: function init() { 271 | var _this = this; 272 | 273 | this.createScaleFunctions(); 274 | 275 | // Apply initial transforms 276 | this.flickity.slides.forEach(this.applyTransforms.bind(this)); 277 | 278 | // Apply again on scroll 279 | this.flickity.on('scroll', function () { 280 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 281 | }); 282 | 283 | // Require a version of Flickity supporting `scroll` event 284 | if (this.flickity._events.scroll === undefined) { 285 | throw new Error(name + ' requires the first parameter to be a instance of Flickity that supports the `scroll` event (version 2+)'); 286 | } 287 | 288 | // Apply again on resize 289 | window.addEventListener('resize', function () { 290 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 291 | }); 292 | } 293 | 294 | /** 295 | * Create scale functions for each transform 296 | */ 297 | 298 | }, { 299 | key: 'createScaleFunctions', 300 | value: function createScaleFunctions() { 301 | this.transforms.forEach(function (transform) { 302 | var domain = []; 303 | var range = []; 304 | 305 | transform.stops.forEach(function (stop) { 306 | domain.push(stop[0]); 307 | range.push(stop[1]); 308 | }); 309 | 310 | // Create unique scale function 311 | transform.scale = function (value) { 312 | return index(domain, range, true)(value); 313 | }; 314 | }); 315 | } 316 | 317 | /** 318 | * Apply transforms to an element 319 | * 320 | * @param {Object} el Flickity element 321 | * @param {Integer} i Element index 322 | */ 323 | 324 | }, { 325 | key: 'applyTransforms', 326 | value: function applyTransforms(slide, i) { 327 | var _this2 = this; 328 | 329 | var el = this.cellElements[i]; 330 | var txs = []; 331 | var xPos = void 0; 332 | 333 | // Get proximity to carousel home 334 | xPos = slide.parent.x < 0 ? slide.target - Math.abs(slide.parent.x) : slide.target + slide.parent.x; 335 | 336 | // Make transforms 337 | this.transforms.forEach(function (transform) { 338 | txs.push(_this2.makeTransform(transform, xPos)); 339 | }); 340 | 341 | // Apply transforms 342 | el.style.transform = txs.join(' '); 343 | } 344 | 345 | /** 346 | * Make an individual transform rule 347 | * 348 | * @param {Object} transform The transform declaration 349 | * @param {Number} xPos Element's proximity to carousel home 350 | * @return {String} 351 | */ 352 | 353 | }, { 354 | key: 'makeTransform', 355 | value: function makeTransform(transform, xPos) { 356 | var name = transform.name; 357 | // const unit = units[name] || '' 358 | var unit = transform.unit || units[name] || ''; 359 | var tx = transform.scale(xPos); 360 | 361 | return name + '(' + tx + unit + ')'; 362 | } 363 | }]); 364 | return FlickityTransformer; 365 | }(); 366 | 367 | return FlickityTransformer; 368 | 369 | }()); -------------------------------------------------------------------------------- /dist/flickity-transformer.pkgd.min.js: -------------------------------------------------------------------------------- 1 | var FlickityTransformer=function(){"use strict";function createCommonjsModule(fn,module){return module={exports:{}},fn(module,module.exports),module.exports}var index=createCommonjsModule(function(module){var config={};function scale(value){var domains=config.domain;var ranges=config.range;var rangeMin;var rangeMax;var domain;var range;var ratio;var result;var i=0;while(i=domains[i]&&value<=domains[i+1]){domain=[domains[i],domains[i+1]],range=[ranges[i],ranges[i+1]];break}i++}if(domain===undefined){if(value", 26 | "license": "GPL-3.0", 27 | "bugs": { 28 | "url": "https://github.com/elcontraption/flickity-transformer/issues" 29 | }, 30 | "homepage": "https://github.com/elcontraption/flickity-transformer#readme", 31 | "dependencies": { 32 | "polylinear-scale": "1.0.10" 33 | }, 34 | "devDependencies": { 35 | "babel-cli": "6.14.0", 36 | "babel-preset-es2015": "6.14.0", 37 | "babel-preset-es2015-rollup": "^1.2.0", 38 | "chai": "3.5.0", 39 | "eslint": "3.4.0", 40 | "eslint-config-standard": "6.0.0", 41 | "eslint-plugin-promise": "2.0.1", 42 | "eslint-plugin-standard": "2.0.0", 43 | "flickity": "^2.0.3", 44 | "http-server": "0.9.0", 45 | "mocha": "3.0.2", 46 | "rollup": "^0.34.13", 47 | "rollup-plugin-babel": "^2.6.1", 48 | "rollup-plugin-commonjs": "^4.1.0", 49 | "rollup-plugin-node-resolve": "^2.0.0", 50 | "uglify-js": "^2.7.3" 51 | } 52 | } 53 | -------------------------------------------------------------------------------- /rollup.js: -------------------------------------------------------------------------------- 1 | const babel = require('rollup-plugin-babel') 2 | const commonjs = require('rollup-plugin-commonjs') 3 | const resolve = require('rollup-plugin-node-resolve') 4 | const rollup = require('rollup') 5 | 6 | let config = { 7 | entry: 'src/index.js', 8 | plugins: [ 9 | babel({ 10 | presets: ['es2015-rollup'], 11 | babelrc: false 12 | }) 13 | ] 14 | } 15 | 16 | rollup.rollup(config).then(bundle => { 17 | bundle.write({ 18 | format: 'cjs', 19 | moduleName: 'FlickityTransformer', 20 | dest: 'dist/flickity-transformer.js' 21 | }) 22 | }) 23 | 24 | config.plugins.push(resolve({ 25 | jsnext: true, 26 | main: true 27 | })) 28 | 29 | config.plugins.push(commonjs()) 30 | 31 | rollup.rollup(config).then(bundle => { 32 | bundle.write({ 33 | format: 'iife', 34 | moduleName: 'FlickityTransformer', 35 | dest: 'dist/flickity-transformer.pkgd.js' 36 | }) 37 | 38 | bundle.write({ 39 | format: 'iife', 40 | moduleName: 'FlickityTransformer', 41 | dest: 'test/functional/flickity-transformer.js' 42 | }) 43 | }).catch(err => console.log(err.stack)) 44 | -------------------------------------------------------------------------------- /src/index.js: -------------------------------------------------------------------------------- 1 | import polylinearScale from 'polylinear-scale' 2 | 3 | /** 4 | * Module name 5 | * 6 | * @type {String} 7 | */ 8 | const name = 'FlickityTransformer' 9 | 10 | /** 11 | * Set default units 12 | * 13 | * @type {Object} 14 | */ 15 | const units = { 16 | perspective: 'px', 17 | rotate: 'deg', 18 | rotateX: 'deg', 19 | rotateY: 'deg', 20 | rotateZ: 'deg', 21 | skew: 'deg', 22 | skewX: 'deg', 23 | skewY: 'deg', 24 | translateX: 'px', 25 | translateY: 'px', 26 | translateZ: 'px' 27 | } 28 | 29 | class FlickityTransformer { 30 | constructor (flickity, transforms) { 31 | this.flickity = flickity 32 | this.transforms = transforms 33 | this.cellElements = flickity.getCellElements() 34 | 35 | this.init() 36 | } 37 | 38 | /** 39 | * Initialize 40 | */ 41 | init () { 42 | this.createScaleFunctions() 43 | 44 | // Apply initial transforms 45 | this.flickity.slides.forEach(this.applyTransforms.bind(this)) 46 | 47 | // Apply again on scroll 48 | this.flickity.on('scroll', () => { 49 | this.flickity.slides.forEach(this.applyTransforms.bind(this)) 50 | }) 51 | 52 | // Require a version of Flickity supporting `scroll` event 53 | if (this.flickity._events.scroll === undefined) { 54 | throw new Error(`${name} requires the first parameter to be a instance of Flickity that supports the \`scroll\` event (version 2+)`) 55 | } 56 | 57 | // Apply again on resize 58 | window.addEventListener('resize', () => { 59 | this.flickity.slides.forEach(this.applyTransforms.bind(this)) 60 | }) 61 | } 62 | 63 | /** 64 | * Create scale functions for each transform 65 | */ 66 | createScaleFunctions () { 67 | this.transforms.forEach(transform => { 68 | const domain = [] 69 | const range = [] 70 | 71 | transform.stops.forEach(stop => { 72 | domain.push(stop[0]) 73 | range.push(stop[1]) 74 | }) 75 | 76 | // Create unique scale function 77 | transform.scale = function (value) { 78 | return polylinearScale(domain, range, true)(value) 79 | } 80 | }) 81 | } 82 | 83 | /** 84 | * Apply transforms to an element 85 | * 86 | * @param {Object} el Flickity element 87 | * @param {Integer} i Element index 88 | */ 89 | applyTransforms (slide, i) { 90 | const el = this.cellElements[i] 91 | const txs = [] 92 | let xPos 93 | 94 | // Get proximity to carousel home 95 | xPos = slide.parent.x < 0 ? slide.target - Math.abs(slide.parent.x) : slide.target + slide.parent.x 96 | 97 | // Make transforms 98 | this.transforms.forEach(transform => { 99 | txs.push(this.makeTransform(transform, xPos)) 100 | }) 101 | 102 | // Apply transforms 103 | el.style.transform = txs.join(' ') 104 | } 105 | 106 | /** 107 | * Make an individual transform rule 108 | * 109 | * @param {Object} transform The transform declaration 110 | * @param {Number} xPos Element's proximity to carousel home 111 | * @return {String} 112 | */ 113 | makeTransform (transform, xPos) { 114 | const name = transform.name 115 | // const unit = units[name] || '' 116 | const unit = transform.unit || units[name] || '' 117 | const tx = transform.scale(xPos) 118 | 119 | return `${name}(${tx}${unit})` 120 | } 121 | } 122 | 123 | /** 124 | * Exporter 125 | */ 126 | export default FlickityTransformer 127 | -------------------------------------------------------------------------------- /test/functional/flickity-transformer.js: -------------------------------------------------------------------------------- 1 | var FlickityTransformer = (function () { 2 | 'use strict'; 3 | 4 | function createCommonjsModule(fn, module) { 5 | return module = { exports: {} }, fn(module, module.exports), module.exports; 6 | } 7 | 8 | var index = createCommonjsModule(function (module) { 9 | var config = {}; 10 | 11 | /** 12 | * The compiled scale to return 13 | * 14 | * @param {Number} value The number to scale 15 | * @return {Number} The result 16 | */ 17 | function scale(value) { 18 | var domains = config.domain; 19 | var ranges = config.range; 20 | var rangeMin; 21 | var rangeMax; 22 | var domain; 23 | var range; 24 | var ratio; 25 | var result; 26 | var i = 0; 27 | 28 | /* eslint-disable no-sequences */ 29 | while (i < domains.length - 1) { 30 | if (value >= domains[i] && value <= domains[i + 1]) { 31 | domain = [domains[i], domains[i + 1]], range = [ranges[i], ranges[i + 1]]; 32 | break; 33 | } 34 | i++; 35 | } 36 | 37 | // Value is outside given domain 38 | if (domain === undefined) { 39 | if (value < domains[0]) { 40 | domain = [domains[0], domains[1]]; 41 | range = [ranges[0], ranges[1]]; 42 | } else { 43 | domain = [domains[domains.length - 2], domains[domains.length - 1]]; 44 | range = [ranges[ranges.length - 2], ranges[ranges.length - 1]]; 45 | } 46 | } 47 | 48 | ratio = (range[1] - range[0]) / (domain[1] - domain[0]); 49 | result = range[0] + ratio * (value - domain[0]); 50 | 51 | if (config.clamp) { 52 | rangeMin = Math.min(range[0], range[1]); 53 | rangeMax = Math.max(range[0], range[1]); 54 | result = Math.min(rangeMax, Math.max(rangeMin, result)); 55 | } 56 | 57 | return result; 58 | } 59 | 60 | /** 61 | * A polylinear scale 62 | * 63 | * Supports multiple piecewise linear scales that divide a continuous domain and range. 64 | * 65 | * @param {Array} domain Two or more numbers 66 | * @param {Array} range Numbers equivalent to number in `domain` 67 | * @param {Boolean} clamp Enables or disables clamping 68 | * @return {Function} Scale function 69 | */ 70 | function polylinearScale(domain, range, clamp) { 71 | domain = domain || [0, 1]; 72 | range = range || [0, 1]; 73 | clamp = clamp || false; 74 | 75 | if (domain.length !== range.length) { 76 | throw new Error('polylinearScale requires domain and range to have an equivalent number of values'); 77 | } 78 | 79 | config.domain = domain; 80 | config.range = range; 81 | config.clamp = clamp; 82 | 83 | return scale; 84 | } 85 | 86 | module.exports = polylinearScale; 87 | }); 88 | 89 | var asyncGenerator = function () { 90 | function AwaitValue(value) { 91 | this.value = value; 92 | } 93 | 94 | function AsyncGenerator(gen) { 95 | var front, back; 96 | 97 | function send(key, arg) { 98 | return new Promise(function (resolve, reject) { 99 | var request = { 100 | key: key, 101 | arg: arg, 102 | resolve: resolve, 103 | reject: reject, 104 | next: null 105 | }; 106 | 107 | if (back) { 108 | back = back.next = request; 109 | } else { 110 | front = back = request; 111 | resume(key, arg); 112 | } 113 | }); 114 | } 115 | 116 | function resume(key, arg) { 117 | try { 118 | var result = gen[key](arg); 119 | var value = result.value; 120 | 121 | if (value instanceof AwaitValue) { 122 | Promise.resolve(value.value).then(function (arg) { 123 | resume("next", arg); 124 | }, function (arg) { 125 | resume("throw", arg); 126 | }); 127 | } else { 128 | settle(result.done ? "return" : "normal", result.value); 129 | } 130 | } catch (err) { 131 | settle("throw", err); 132 | } 133 | } 134 | 135 | function settle(type, value) { 136 | switch (type) { 137 | case "return": 138 | front.resolve({ 139 | value: value, 140 | done: true 141 | }); 142 | break; 143 | 144 | case "throw": 145 | front.reject(value); 146 | break; 147 | 148 | default: 149 | front.resolve({ 150 | value: value, 151 | done: false 152 | }); 153 | break; 154 | } 155 | 156 | front = front.next; 157 | 158 | if (front) { 159 | resume(front.key, front.arg); 160 | } else { 161 | back = null; 162 | } 163 | } 164 | 165 | this._invoke = send; 166 | 167 | if (typeof gen.return !== "function") { 168 | this.return = undefined; 169 | } 170 | } 171 | 172 | if (typeof Symbol === "function" && Symbol.asyncIterator) { 173 | AsyncGenerator.prototype[Symbol.asyncIterator] = function () { 174 | return this; 175 | }; 176 | } 177 | 178 | AsyncGenerator.prototype.next = function (arg) { 179 | return this._invoke("next", arg); 180 | }; 181 | 182 | AsyncGenerator.prototype.throw = function (arg) { 183 | return this._invoke("throw", arg); 184 | }; 185 | 186 | AsyncGenerator.prototype.return = function (arg) { 187 | return this._invoke("return", arg); 188 | }; 189 | 190 | return { 191 | wrap: function (fn) { 192 | return function () { 193 | return new AsyncGenerator(fn.apply(this, arguments)); 194 | }; 195 | }, 196 | await: function (value) { 197 | return new AwaitValue(value); 198 | } 199 | }; 200 | }(); 201 | 202 | var classCallCheck = function (instance, Constructor) { 203 | if (!(instance instanceof Constructor)) { 204 | throw new TypeError("Cannot call a class as a function"); 205 | } 206 | }; 207 | 208 | var createClass = function () { 209 | function defineProperties(target, props) { 210 | for (var i = 0; i < props.length; i++) { 211 | var descriptor = props[i]; 212 | descriptor.enumerable = descriptor.enumerable || false; 213 | descriptor.configurable = true; 214 | if ("value" in descriptor) descriptor.writable = true; 215 | Object.defineProperty(target, descriptor.key, descriptor); 216 | } 217 | } 218 | 219 | return function (Constructor, protoProps, staticProps) { 220 | if (protoProps) defineProperties(Constructor.prototype, protoProps); 221 | if (staticProps) defineProperties(Constructor, staticProps); 222 | return Constructor; 223 | }; 224 | }(); 225 | 226 | /** 227 | * Module name 228 | * 229 | * @type {String} 230 | */ 231 | var name = 'FlickityTransformer'; 232 | 233 | /** 234 | * Set default units 235 | * 236 | * @type {Object} 237 | */ 238 | var units = { 239 | perspective: 'px', 240 | rotate: 'deg', 241 | rotateX: 'deg', 242 | rotateY: 'deg', 243 | rotateZ: 'deg', 244 | skew: 'deg', 245 | skewX: 'deg', 246 | skewY: 'deg', 247 | translateX: 'px', 248 | translateY: 'px', 249 | translateZ: 'px' 250 | }; 251 | 252 | var FlickityTransformer = function () { 253 | function FlickityTransformer(flickity, transforms) { 254 | classCallCheck(this, FlickityTransformer); 255 | 256 | this.flickity = flickity; 257 | this.transforms = transforms; 258 | this.cellElements = flickity.getCellElements(); 259 | 260 | this.init(); 261 | } 262 | 263 | /** 264 | * Initialize 265 | */ 266 | 267 | 268 | createClass(FlickityTransformer, [{ 269 | key: 'init', 270 | value: function init() { 271 | var _this = this; 272 | 273 | this.createScaleFunctions(); 274 | 275 | // Apply initial transforms 276 | this.flickity.slides.forEach(this.applyTransforms.bind(this)); 277 | 278 | // Apply again on scroll 279 | this.flickity.on('scroll', function () { 280 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 281 | }); 282 | 283 | // Require a version of Flickity supporting `scroll` event 284 | if (this.flickity._events.scroll === undefined) { 285 | throw new Error(name + ' requires the first parameter to be a instance of Flickity that supports the `scroll` event (version 2+)'); 286 | } 287 | 288 | // Apply again on resize 289 | window.addEventListener('resize', function () { 290 | _this.flickity.slides.forEach(_this.applyTransforms.bind(_this)); 291 | }); 292 | } 293 | 294 | /** 295 | * Create scale functions for each transform 296 | */ 297 | 298 | }, { 299 | key: 'createScaleFunctions', 300 | value: function createScaleFunctions() { 301 | this.transforms.forEach(function (transform) { 302 | var domain = []; 303 | var range = []; 304 | 305 | transform.stops.forEach(function (stop) { 306 | domain.push(stop[0]); 307 | range.push(stop[1]); 308 | }); 309 | 310 | // Create unique scale function 311 | transform.scale = function (value) { 312 | return index(domain, range, true)(value); 313 | }; 314 | }); 315 | } 316 | 317 | /** 318 | * Apply transforms to an element 319 | * 320 | * @param {Object} el Flickity element 321 | * @param {Integer} i Element index 322 | */ 323 | 324 | }, { 325 | key: 'applyTransforms', 326 | value: function applyTransforms(slide, i) { 327 | var _this2 = this; 328 | 329 | var el = this.cellElements[i]; 330 | var txs = []; 331 | var xPos = void 0; 332 | 333 | // Get proximity to carousel home 334 | xPos = slide.parent.x < 0 ? slide.target - Math.abs(slide.parent.x) : slide.target + slide.parent.x; 335 | 336 | // Make transforms 337 | this.transforms.forEach(function (transform) { 338 | txs.push(_this2.makeTransform(transform, xPos)); 339 | }); 340 | 341 | // Apply transforms 342 | el.style.transform = txs.join(' '); 343 | } 344 | 345 | /** 346 | * Make an individual transform rule 347 | * 348 | * @param {Object} transform The transform declaration 349 | * @param {Number} xPos Element's proximity to carousel home 350 | * @return {String} 351 | */ 352 | 353 | }, { 354 | key: 'makeTransform', 355 | value: function makeTransform(transform, xPos) { 356 | var name = transform.name; 357 | // const unit = units[name] || '' 358 | var unit = transform.unit || units[name] || ''; 359 | var tx = transform.scale(xPos); 360 | 361 | return name + '(' + tx + unit + ')'; 362 | } 363 | }]); 364 | return FlickityTransformer; 365 | }(); 366 | 367 | return FlickityTransformer; 368 | 369 | }()); -------------------------------------------------------------------------------- /test/functional/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | FlickityTransformer Test 6 | 7 | 8 | 9 | 10 | 11 | 33 | 34 | 35 | 36 | 37 | 38 | 39 |
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56 | 57 | 111 | 112 | 113 | 114 | -------------------------------------------------------------------------------- /test/index.js: -------------------------------------------------------------------------------- 1 | import * as chai from 'chai' 2 | import FlickityTransformer from '../src' 3 | 4 | global.chai = chai 5 | global.expect = global.chai.expect 6 | 7 | const name = 'FlickityTransformer' 8 | 9 | describe('FlickityTransformer', () => { 10 | it('should export a constructor', () => { 11 | expect(FlickityTransformer).to.be.a('function') 12 | }) 13 | }) 14 | --------------------------------------------------------------------------------