├── .editorconfig
├── .eslintrc
├── .gitignore
├── LICENSE
├── README.md
├── dist
    ├── index.js
    └── index.js.map
├── examples
    └── index.html
├── package.json
└── src
    ├── index.js
    └── range.js


/.editorconfig:
--------------------------------------------------------------------------------
 1 | root = true
 2 | 
 3 | [*]
 4 | end_of_line = lf
 5 | indent_size = 4
 6 | indent_style = tab
 7 | charset = utf-8
 8 | trim_trailing_whitespace = true
 9 | insert_final_newline = true
10 | 
11 | [*.md]
12 | trim_trailing_whitespace = false
13 | 
14 | [*.yml]
15 | indent_style = space
16 | 
17 | [package.json]
18 | indent_size = 2
19 | indent_style = space
20 | 


--------------------------------------------------------------------------------
/.eslintrc:
--------------------------------------------------------------------------------
 1 | {
 2 | 	"parser": "espree",
 3 | 	"parserOptions": {
 4 | 		"ecmaVersion": 6,
 5 | 		"sourceType": "module"
 6 | 	},
 7 | 	"env": {
 8 | 		"browser": true,
 9 | 		"es6": true,
10 | 		"node": true
11 | 	},
12 | 	"extends": "eslint:recommended",
13 | 	"rules": {
14 | 		"eol-last": 2,
15 | 		"eqeqeq": 2,
16 | 		"indent": [2, "tab", {"SwitchCase": 1}],
17 | 		"keyword-spacing": 2,
18 | 		"no-console": 0,
19 | 		"no-debugger": 0,
20 | 		"no-extra-parens": 2,
21 | 		"no-multi-spaces": 0,
22 | 		"no-spaced-func": 2,
23 | 		"no-trailing-spaces": 2,
24 | 		"no-var": 2,
25 | 		"prefer-template": 2,
26 | 		"prefer-arrow-callback": 2,
27 | 		"quotes": [2, "single"],
28 | 		"semi": [2, "always"],
29 | 		"space-before-blocks": 2,
30 | 		"space-before-function-paren": [2, "never"],
31 | 		"space-infix-ops": 2,
32 | 		"space-unary-ops": 2
33 | 	}
34 | }
35 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
1 | .DS_Store
2 | node_modules


--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
 1 | The MIT License (MIT)
 2 | 
 3 | Copyright (c) 2014 Corentin FARDEAU
 4 | 
 5 | Permission is hereby granted, free of charge, to any person obtaining a copy
 6 | of this software and associated documentation files (the "Software"), to deal
 7 | in the Software without restriction, including without limitation the rights
 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 9 | copies of the Software, and to permit persons to whom the Software is
10 | furnished to do so, subject to the following conditions:
11 | 
12 | The above copyright notice and this permission notice shall be included in all
13 | copies or substantial portions of the Software.
14 | 
15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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 FROM,
20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 | SOFTWARE.
22 | 
23 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | horizontal-scroll
 2 | =====
 3 | 
 4 | ### Installation
 5 | 
 6 | ```
 7 | npm install -S horizontal-scroll
 8 | ```
 9 | 
10 | ### Usage & API
11 | 
12 | HTML
13 | ```html
14 | <div class="container">
15 | 	<div class="block"></div>
16 | 	<div class="block"></div>
17 | 	<div class="block"></div>
18 | 	<div class="block"></div>
19 | 	<div class="block"></div>
20 | </div>
21 | ```
22 | 
23 | Javascript
24 | ```javascript
25 | var blocks = document.getElementsByClassName('block');
26 | var container = document.getElementsByClassName('container');
27 | var hs = new HorizontalScroll.default({
28 | 	blocks : blocks,
29 | 	container: container,
30 | });
31 | 
32 | ```
33 | 
34 | ### Options
35 | 
36 | #### container `Node DOM` `null`
37 | The list container.
38 | 
39 | #### blocks `Node DOM` `null`
40 | Item in the list.
41 | 
42 | #### isAnimated `Boolean` `false`
43 | If true, the list should have a skew relative to the scroll speed. 
44 | 
45 | #### spring `Number` `0.1`
46 | Friction of the scroll.
47 | 
48 | #### skewReducer `Number` `20`
49 | Strength of the skew effect.
50 | 
51 | #### skewLimit `Number` `20`
52 | Limit value of the skew effect.
53 | 
54 | ### Example
55 | https://corentinfardeau.github.io/horizontal-scroll/
56 | 
57 | ### License
58 | MIT.
59 | 


--------------------------------------------------------------------------------
/dist/index.js:
--------------------------------------------------------------------------------
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2 | //# sourceMappingURL=index.js.map


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             functions.push(method);\n                }\n            }\n        }\n    }\n\n    for(var i = 0; i < functions.length; i++) {\n        var f = functions[i];\n        object[f] = bind(object[f], object);\n    }\n};\n\n/*\n    Faster bind without specific-case checking. 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IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\nfunction EventEmitter() {\n  this._events = this._events || {};\n  this._maxListeners = this._maxListeners || undefined;\n}\nmodule.exports = EventEmitter;\n\n// Backwards-compat with node 0.10.x\nEventEmitter.EventEmitter = EventEmitter;\n\nEventEmitter.prototype._events = undefined;\nEventEmitter.prototype._maxListeners = undefined;\n\n// By default EventEmitters will print a warning if more than 10 listeners are\n// added to it. This is a useful default which helps finding memory leaks.\nEventEmitter.defaultMaxListeners = 10;\n\n// Obviously not all Emitters should be limited to 10. This function allows\n// that to be increased. Set to zero for unlimited.\nEventEmitter.prototype.setMaxListeners = function(n) {\n  if (!isNumber(n) || n < 0 || isNaN(n))\n    throw TypeError('n must be a positive number');\n  this._maxListeners = n;\n  return this;\n};\n\nEventEmitter.prototype.emit = function(type) {\n  var er, handler, len, args, i, listeners;\n\n  if (!this._events)\n    this._events = {};\n\n  // If there is no 'error' event listener then throw.\n  if (type === 'error') {\n    if (!this._events.error ||\n        (isObject(this._events.error) && !this._events.error.length)) {\n      er = arguments[1];\n      if (er instanceof Error) {\n        throw er; // Unhandled 'error' event\n      } else {\n        // At least give some kind of context to the user\n        var err = new Error('Uncaught, unspecified \"error\" event. (' + er + ')');\n        err.context = er;\n        throw err;\n      }\n    }\n  }\n\n  handler = this._events[type];\n\n  if (isUndefined(handler))\n    return false;\n\n  if (isFunction(handler)) {\n    switch (arguments.length) {\n      // fast cases\n      case 1:\n        handler.call(this);\n        break;\n      case 2:\n        handler.call(this, arguments[1]);\n        break;\n      case 3:\n        handler.call(this, arguments[1], arguments[2]);\n        break;\n      // slower\n      default:\n        args = Array.prototype.slice.call(arguments, 1);\n        handler.apply(this, args);\n    }\n  } else if (isObject(handler)) {\n    args = Array.prototype.slice.call(arguments, 1);\n    listeners = handler.slice();\n    len = listeners.length;\n    for (i = 0; i < len; i++)\n      listeners[i].apply(this, args);\n  }\n\n  return true;\n};\n\nEventEmitter.prototype.addListener = function(type, listener) {\n  var m;\n\n  if (!isFunction(listener))\n    throw TypeError('listener must be a function');\n\n  if (!this._events)\n    this._events = {};\n\n  // To avoid recursion in the case that type === \"newListener\"! Before\n  // adding it to the listeners, first emit \"newListener\".\n  if (this._events.newListener)\n    this.emit('newListener', type,\n              isFunction(listener.listener) ?\n              listener.listener : listener);\n\n  if (!this._events[type])\n    // Optimize the case of one listener. Don't need the extra array object.\n    this._events[type] = listener;\n  else if (isObject(this._events[type]))\n    // If we've already got an array, just append.\n    this._events[type].push(listener);\n  else\n    // Adding the second element, need to change to array.\n    this._events[type] = [this._events[type], listener];\n\n  // Check for listener leak\n  if (isObject(this._events[type]) && !this._events[type].warned) {\n    if (!isUndefined(this._maxListeners)) {\n      m = this._maxListeners;\n    } else {\n      m = EventEmitter.defaultMaxListeners;\n    }\n\n    if (m && m > 0 && this._events[type].length > m) {\n      this._events[type].warned = true;\n      console.error('(node) warning: possible EventEmitter memory ' +\n                    'leak detected. %d listeners added. ' +\n                    'Use emitter.setMaxListeners() to increase limit.',\n                    this._events[type].length);\n      if (typeof console.trace === 'function') {\n        // not supported in IE 10\n        console.trace();\n      }\n    }\n  }\n\n  return this;\n};\n\nEventEmitter.prototype.on = EventEmitter.prototype.addListener;\n\nEventEmitter.prototype.once = function(type, listener) {\n  if (!isFunction(listener))\n    throw TypeError('listener must be a function');\n\n  var fired = false;\n\n  function g() {\n    this.removeListener(type, g);\n\n    if (!fired) {\n      fired = true;\n      listener.apply(this, arguments);\n    }\n  }\n\n  g.listener = listener;\n  this.on(type, g);\n\n  return this;\n};\n\n// emits a 'removeListener' event iff the listener was removed\nEventEmitter.prototype.removeListener = function(type, listener) {\n  var list, position, length, i;\n\n  if (!isFunction(listener))\n    throw TypeError('listener must be a function');\n\n  if (!this._events || !this._events[type])\n    return this;\n\n  list = this._events[type];\n  length = list.length;\n  position = -1;\n\n  if (list === listener ||\n      (isFunction(list.listener) && list.listener === listener)) {\n    delete this._events[type];\n    if (this._events.removeListener)\n      this.emit('removeListener', type, listener);\n\n  } else if (isObject(list)) {\n    for (i = length; i-- > 0;) {\n      if (list[i] === listener ||\n          (list[i].listener && list[i].listener === listener)) {\n        position = i;\n        break;\n      }\n    }\n\n    if (position < 0)\n      return this;\n\n    if (list.length === 1) {\n      list.length = 0;\n      delete this._events[type];\n    } else {\n      list.splice(position, 1);\n    }\n\n    if (this._events.removeListener)\n      this.emit('removeListener', type, listener);\n  }\n\n  return this;\n};\n\nEventEmitter.prototype.removeAllListeners = function(type) {\n  var key, listeners;\n\n  if (!this._events)\n    return this;\n\n  // not listening for removeListener, no need to emit\n  if (!this._events.removeListener) {\n    if (arguments.length === 0)\n      this._events = {};\n    else if (this._events[type])\n      delete this._events[type];\n    return this;\n  }\n\n  // emit removeListener for all listeners on all events\n  if (arguments.length === 0) {\n    for (key in this._events) {\n      if (key === 'removeListener') continue;\n      this.removeAllListeners(key);\n    }\n    this.removeAllListeners('removeListener');\n    this._events = {};\n    return this;\n  }\n\n  listeners = this._events[type];\n\n  if (isFunction(listeners)) {\n    this.removeListener(type, listeners);\n  } else if (listeners) {\n    // LIFO order\n    while (listeners.length)\n      this.removeListener(type, listeners[listeners.length - 1]);\n  }\n  delete this._events[type];\n\n  return this;\n};\n\nEventEmitter.prototype.listeners = function(type) {\n  var ret;\n  if (!this._events || !this._events[type])\n    ret = [];\n  else if (isFunction(this._events[type]))\n    ret = [this._events[type]];\n  else\n    ret = this._events[type].slice();\n  return ret;\n};\n\nEventEmitter.prototype.listenerCount = function(type) {\n  if (this._events) {\n    var evlistener = this._events[type];\n\n    if (isFunction(evlistener))\n      return 1;\n    else if (evlistener)\n      return evlistener.length;\n  }\n  return 0;\n};\n\nEventEmitter.listenerCount = function(emitter, type) {\n  return emitter.listenerCount(type);\n};\n\nfunction isFunction(arg) {\n  return typeof arg === 'function';\n}\n\nfunction isNumber(arg) {\n  return typeof arg === 'number';\n}\n\nfunction isObject(arg) {\n  return typeof arg === 'object' && arg !== null;\n}\n\nfunction isUndefined(arg) {\n  return arg === void 0;\n}\n","// Generated by CoffeeScript 1.9.2\n(function() {\n  var root;\n\n  root = typeof exports !== \"undefined\" && exports !== null ? exports : this;\n\n  root.Lethargy = (function() {\n    function Lethargy(stability, sensitivity, tolerance, delay) {\n      this.stability = stability != null ? Math.abs(stability) : 8;\n      this.sensitivity = sensitivity != null ? 1 + Math.abs(sensitivity) : 100;\n      this.tolerance = tolerance != null ? 1 + Math.abs(tolerance) : 1.1;\n      this.delay = delay != null ? delay : 150;\n      this.lastUpDeltas = (function() {\n        var i, ref, results;\n        results = [];\n        for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {\n          results.push(null);\n        }\n        return results;\n      }).call(this);\n      this.lastDownDeltas = (function() {\n        var i, ref, results;\n        results = [];\n        for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {\n          results.push(null);\n        }\n        return results;\n      }).call(this);\n      this.deltasTimestamp = (function() {\n        var i, ref, results;\n        results = [];\n        for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {\n          results.push(null);\n        }\n        return results;\n      }).call(this);\n    }\n\n    Lethargy.prototype.check = function(e) {\n      var lastDelta;\n      e = e.originalEvent || e;\n      if (e.wheelDelta != null) {\n        lastDelta = e.wheelDelta;\n      } else if (e.deltaY != null) {\n        lastDelta = e.deltaY * -40;\n      } else if ((e.detail != null) || e.detail === 0) {\n        lastDelta = e.detail * -40;\n      }\n      this.deltasTimestamp.push(Date.now());\n      this.deltasTimestamp.shift();\n      if (lastDelta > 0) {\n        this.lastUpDeltas.push(lastDelta);\n        this.lastUpDeltas.shift();\n        return this.isInertia(1);\n      } else {\n        this.lastDownDeltas.push(lastDelta);\n        this.lastDownDeltas.shift();\n        return this.isInertia(-1);\n      }\n      return false;\n    };\n\n    Lethargy.prototype.isInertia = function(direction) {\n      var lastDeltas, lastDeltasNew, lastDeltasOld, newAverage, newSum, oldAverage, oldSum;\n      lastDeltas = direction === -1 ? this.lastDownDeltas : this.lastUpDeltas;\n      if (lastDeltas[0] === null) {\n        return direction;\n      }\n      if (this.deltasTimestamp[(this.stability * 2) - 2] + this.delay > Date.now() && lastDeltas[0] === lastDeltas[(this.stability * 2) - 1]) {\n        return false;\n      }\n      lastDeltasOld = lastDeltas.slice(0, this.stability);\n      lastDeltasNew = lastDeltas.slice(this.stability, this.stability * 2);\n      oldSum = lastDeltasOld.reduce(function(t, s) {\n        return t + s;\n      });\n      newSum = lastDeltasNew.reduce(function(t, s) {\n        return t + s;\n      });\n      oldAverage = oldSum / lastDeltasOld.length;\n      newAverage = newSum / lastDeltasNew.length;\n      if (Math.abs(oldAverage) < Math.abs(newAverage * this.tolerance) && (this.sensitivity < Math.abs(newAverage))) {\n        return direction;\n      } else {\n        return false;\n      }\n    };\n\n    Lethargy.prototype.showLastUpDeltas = function() {\n      return this.lastUpDeltas;\n    };\n\n    Lethargy.prototype.showLastDownDeltas = function() {\n      return this.lastDownDeltas;\n    };\n\n    return Lethargy;\n\n  })();\n\n}).call(this);\n","/*\nobject-assign\n(c) Sindre Sorhus\n@license MIT\n*/\n\n'use strict';\n/* eslint-disable no-unused-vars */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nvar propIsEnumerable = Object.prototype.propertyIsEnumerable;\n\nfunction toObject(val) {\n\tif (val === null || val === undefined) {\n\t\tthrow new TypeError('Object.assign cannot be called with null or undefined');\n\t}\n\n\treturn Object(val);\n}\n\nfunction shouldUseNative() {\n\ttry {\n\t\tif (!Object.assign) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Detect buggy property enumeration order in older V8 versions.\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=4118\n\t\tvar test1 = new String('abc');  // eslint-disable-line no-new-wrappers\n\t\ttest1[5] = 'de';\n\t\tif (Object.getOwnPropertyNames(test1)[0] === '5') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test2 = {};\n\t\tfor (var i = 0; i < 10; i++) {\n\t\t\ttest2['_' + String.fromCharCode(i)] = i;\n\t\t}\n\t\tvar order2 = Object.getOwnPropertyNames(test2).map(function (n) {\n\t\t\treturn test2[n];\n\t\t});\n\t\tif (order2.join('') !== '0123456789') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test3 = {};\n\t\t'abcdefghijklmnopqrst'.split('').forEach(function (letter) {\n\t\t\ttest3[letter] = letter;\n\t\t});\n\t\tif (Object.keys(Object.assign({}, test3)).join('') !==\n\t\t\t\t'abcdefghijklmnopqrst') {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t} catch (err) {\n\t\t// We don't expect any of the above to throw, but better to be safe.\n\t\treturn false;\n\t}\n}\n\nmodule.exports = shouldUseNative() ? Object.assign : function (target, source) {\n\tvar from;\n\tvar to = toObject(target);\n\tvar symbols;\n\n\tfor (var s = 1; s < arguments.length; s++) {\n\t\tfrom = Object(arguments[s]);\n\n\t\tfor (var key in from) {\n\t\t\tif (hasOwnProperty.call(from, key)) {\n\t\t\t\tto[key] = from[key];\n\t\t\t}\n\t\t}\n\n\t\tif (getOwnPropertySymbols) {\n\t\t\tsymbols = getOwnPropertySymbols(from);\n\t\t\tfor (var i = 0; i < symbols.length; i++) {\n\t\t\t\tif (propIsEnumerable.call(from, symbols[i])) {\n\t\t\t\t\tto[symbols[i]] = from[symbols[i]];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn to;\n};\n","// Generated by CoffeeScript 1.7.1\n(function() {\n  var getNanoSeconds, hrtime, loadTime;\n\n  if ((typeof performance !== \"undefined\" && performance !== null) && performance.now) {\n    module.exports = function() {\n      return performance.now();\n    };\n  } else if ((typeof process !== \"undefined\" && process !== null) && process.hrtime) {\n    module.exports = function() {\n      return (getNanoSeconds() - loadTime) / 1e6;\n    };\n    hrtime = process.hrtime;\n    getNanoSeconds = function() {\n      var hr;\n      hr = hrtime();\n      return hr[0] * 1e9 + hr[1];\n    };\n    loadTime = getNanoSeconds();\n  } else if (Date.now) {\n    module.exports = function() {\n      return Date.now() - loadTime;\n    };\n    loadTime = Date.now();\n  } else {\n    module.exports = function() {\n      return new Date().getTime() - loadTime;\n    };\n    loadTime = new Date().getTime();\n  }\n\n}).call(this);\n","// check document first so it doesn't error in node.js\nvar style = typeof document != 'undefined'\n  ? document.createElement('p').style\n  : {}\n\nvar prefixes = ['O', 'ms', 'Moz', 'Webkit']\nvar upper = /([A-Z])/g\nvar memo = {}\n\n/**\n * prefix `key`\n *\n *   prefix('transform') // => WebkitTransform\n *\n * @param {String} key\n * @return {String}\n * @api public\n */\nfunction prefix(key){\n  // Camel case\n  key = key.replace(/-([a-z])/g, function(_, char){\n    return char.toUpperCase()\n  })\n\n  // Without prefix\n  if (style[key] !== undefined) return key\n\n  // With prefix\n  var Key = key.charAt(0).toUpperCase() + key.slice(1)\n  var i = prefixes.length\n  while (i--) {\n    var name = prefixes[i] + Key\n    if (style[name] !== undefined) return name\n  }\n\n  return key\n}\n\n/**\n * Memoized version of `prefix`\n *\n * @param {String} key\n * @return {String}\n * @api public\n */\nfunction prefixMemozied(key){\n  return key in memo\n    ? memo[key]\n    : memo[key] = prefix(key)\n}\n\n/**\n * Create a dashed prefix\n *\n * @param {String} key\n * @return {String}\n * @api public\n */\nfunction prefixDashed(key){\n  key = prefix(key)\n  if (upper.test(key)) {\n    key = '-' + key.replace(upper, '-$1')\n    upper.lastIndex = 0\n  }\n  return key.toLowerCase()\n}\n\nmodule.exports = prefixMemozied\nmodule.exports.dash = prefixDashed\n","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things.  But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals.  It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n    throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n    throw new Error('clearTimeout has not been defined');\n}\n(function () {\n    try {\n        if (typeof setTimeout === 'function') {\n            cachedSetTimeout = setTimeout;\n        } else {\n            cachedSetTimeout = defaultSetTimout;\n        }\n    } catch (e) {\n        cachedSetTimeout = defaultSetTimout;\n    }\n    try {\n        if (typeof clearTimeout === 'function') {\n            cachedClearTimeout = clearTimeout;\n        } else {\n            cachedClearTimeout = defaultClearTimeout;\n        }\n    } catch (e) {\n        cachedClearTimeout = defaultClearTimeout;\n    }\n} ())\nfunction runTimeout(fun) {\n    if (cachedSetTimeout === setTimeout) {\n        //normal enviroments in sane situations\n        return setTimeout(fun, 0);\n    }\n    // if setTimeout wasn't available but was latter defined\n    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n        cachedSetTimeout = setTimeout;\n        return setTimeout(fun, 0);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedSetTimeout(fun, 0);\n    } catch(e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n            return cachedSetTimeout.call(null, fun, 0);\n        } catch(e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n            return cachedSetTimeout.call(this, fun, 0);\n        }\n    }\n\n\n}\nfunction runClearTimeout(marker) {\n    if (cachedClearTimeout === clearTimeout) {\n        //normal enviroments in sane situations\n        return clearTimeout(marker);\n    }\n    // if clearTimeout wasn't available but was latter defined\n    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n        cachedClearTimeout = clearTimeout;\n        return clearTimeout(marker);\n    }\n    try {\n        // when when somebody has screwed with setTimeout but no I.E. maddness\n        return cachedClearTimeout(marker);\n    } catch (e){\n        try {\n            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally\n            return cachedClearTimeout.call(null, marker);\n        } catch (e){\n            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n            // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n            return cachedClearTimeout.call(this, marker);\n        }\n    }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n    if (!draining || !currentQueue) {\n        return;\n    }\n    draining = false;\n    if (currentQueue.length) {\n        queue = currentQueue.concat(queue);\n    } else {\n        queueIndex = -1;\n    }\n    if (queue.length) {\n        drainQueue();\n    }\n}\n\nfunction drainQueue() {\n    if (draining) {\n        return;\n    }\n    var timeout = runTimeout(cleanUpNextTick);\n    draining = true;\n\n    var len = queue.length;\n    while(len) {\n        currentQueue = queue;\n        queue = [];\n        while (++queueIndex < len) {\n            if (currentQueue) {\n                currentQueue[queueIndex].run();\n            }\n        }\n        queueIndex = -1;\n        len = queue.length;\n    }\n    currentQueue = null;\n    draining = false;\n    runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n    var args = new Array(arguments.length - 1);\n    if (arguments.length > 1) {\n        for (var i = 1; i < arguments.length; i++) {\n            args[i - 1] = arguments[i];\n        }\n    }\n    queue.push(new Item(fun, args));\n    if (queue.length === 1 && !draining) {\n        runTimeout(drainQueue);\n    }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n    this.fun = fun;\n    this.array = array;\n}\nItem.prototype.run = function () {\n    this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\n\nprocess.binding = function (name) {\n    throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n    throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n","var now = require('performance-now')\n  , root = typeof window === 'undefined' ? global : window\n  , vendors = ['moz', 'webkit']\n  , suffix = 'AnimationFrame'\n  , raf = root['request' + suffix]\n  , caf = root['cancel' + suffix] || root['cancelRequest' + suffix]\n\nfor(var i = 0; !raf && i < vendors.length; i++) {\n  raf = root[vendors[i] + 'Request' + suffix]\n  caf = root[vendors[i] + 'Cancel' + suffix]\n      || root[vendors[i] + 'CancelRequest' + suffix]\n}\n\n// Some versions of FF have rAF but not cAF\nif(!raf || !caf) {\n  var last = 0\n    , id = 0\n    , queue = []\n    , frameDuration = 1000 / 60\n\n  raf = function(callback) {\n    if(queue.length === 0) {\n      var _now = now()\n        , next = Math.max(0, frameDuration - (_now - last))\n      last = next + _now\n      setTimeout(function() {\n        var cp = queue.slice(0)\n        // Clear queue here to prevent\n        // callbacks from appending listeners\n        // to the current frame's queue\n        queue.length = 0\n        for(var i = 0; i < cp.length; i++) {\n          if(!cp[i].cancelled) {\n            try{\n              cp[i].callback(last)\n            } catch(e) {\n              setTimeout(function() { throw e }, 0)\n            }\n          }\n        }\n      }, Math.round(next))\n    }\n    queue.push({\n      handle: ++id,\n      callback: callback,\n      cancelled: false\n    })\n    return id\n  }\n\n  caf = function(handle) {\n    for(var i = 0; i < queue.length; i++) {\n      if(queue[i].handle === handle) {\n        queue[i].cancelled = true\n      }\n    }\n  }\n}\n\nmodule.exports = function(fn) {\n  // Wrap in a new function to prevent\n  // `cancel` potentially being assigned\n  // to the native rAF function\n  return raf.call(root, fn)\n}\nmodule.exports.cancel = function() {\n  caf.apply(root, arguments)\n}\nmodule.exports.polyfill = function() {\n  root.requestAnimationFrame = raf\n  root.cancelAnimationFrame = caf\n}\n","function E () {\n  // Keep this empty so it's easier to inherit from\n  // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n  on: function (name, callback, ctx) {\n    var e = this.e || (this.e = {});\n\n    (e[name] || (e[name] = [])).push({\n      fn: callback,\n      ctx: ctx\n    });\n\n    return this;\n  },\n\n  once: function (name, callback, ctx) {\n    var self = this;\n    function listener () {\n      self.off(name, listener);\n      callback.apply(ctx, arguments);\n    };\n\n    listener._ = callback\n    return this.on(name, listener, ctx);\n  },\n\n  emit: function (name) {\n    var data = [].slice.call(arguments, 1);\n    var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n    var i = 0;\n    var len = evtArr.length;\n\n    for (i; i < len; i++) {\n      evtArr[i].fn.apply(evtArr[i].ctx, data);\n    }\n\n    return this;\n  },\n\n  off: function (name, callback) {\n    var e = this.e || (this.e = {});\n    var evts = e[name];\n    var liveEvents = [];\n\n    if (evts && callback) {\n      for (var i = 0, len = evts.length; i < len; i++) {\n        if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n          liveEvents.push(evts[i]);\n      }\n    }\n\n    // Remove event from queue to prevent memory leak\n    // Suggested by https://github.com/lazd\n    // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n    (liveEvents.length)\n      ? e[name] = liveEvents\n      : delete e[name];\n\n    return this;\n  }\n};\n\nmodule.exports = E;\n","'use strict';\n\nmodule.exports = function(source) {\n    return JSON.parse(JSON.stringify(source));\n};","'use strict';\n\nvar objectAssign = require('object-assign');\nvar Emitter = require('tiny-emitter');\nvar Lethargy = require('lethargy').Lethargy;\nvar support = require('./support');\nvar clone = require('./clone');\nvar bindAll = require('bindall-standalone');\nvar EVT_ID = 'virtualscroll';\n\nmodule.exports = VirtualScroll;\n\nvar keyCodes = {\n    LEFT: 37,\n    UP: 38,\n    RIGHT: 39,\n    DOWN: 40\n};\n\nfunction VirtualScroll(options) {\n    bindAll(this, '_onWheel', '_onMouseWheel', '_onTouchStart', '_onTouchMove', '_onKeyDown');\n\n\tthis.el = window;\n    if (options && options.el) {\n        this.el = options.el;\n        delete options.el;\n    }\n    this.options = objectAssign({\n        mouseMultiplier: 1,\n        touchMultiplier: 2,\n        firefoxMultiplier: 15,\n        keyStep: 120,\n        preventTouch: false,\n        unpreventTouchClass: 'vs-touchmove-allowed',\n        limitInertia: false\n    }, options);\n\n    if (this.options.limitInertia) this._lethargy = new Lethargy();\n\n    this._emitter = new Emitter();\n    this._event = {\n        y: 0,\n        x: 0,\n        deltaX: 0,\n        deltaY: 0\n    };\n\n    this.touchStartX = null;\n    this.touchStartY = null;\n    this.bodyTouchAction = null;\n}\n\nVirtualScroll.prototype._notify = function(e) {\n    var evt = this._event;\n    evt.x += evt.deltaX;\n    evt.y += evt.deltaY;\n\n   this._emitter.emit(EVT_ID, {\n        x: evt.x,\n        y: evt.y,\n        deltaX: evt.deltaX,\n        deltaY: evt.deltaY,\n        originalEvent: e\n   });\n};\n\nVirtualScroll.prototype._onWheel = function(e) {\n    var options = this.options;\n    if (this._lethargy && this._lethargy.check(e) === false) return;\n\n    var evt = this._event;\n\n    // In Chrome and in Firefox (at least the new one)\n    evt.deltaX = e.wheelDeltaX || e.deltaX * -1;\n    evt.deltaY = e.wheelDeltaY || e.deltaY * -1;\n\n    // for our purpose deltamode = 1 means user is on a wheel mouse, not touch pad\n    // real meaning: https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent#Delta_modes\n    if(support.isFirefox && e.deltaMode == 1) {\n        evt.deltaX *= options.firefoxMultiplier;\n        evt.deltaY *= options.firefoxMultiplier;\n    }\n\n    evt.deltaX *= options.mouseMultiplier;\n    evt.deltaY *= options.mouseMultiplier;\n\n    this._notify(e);\n};\n\nVirtualScroll.prototype._onMouseWheel = function(e) {\n    if (this.options.limitInertia && this._lethargy.check(e) === false) return;\n\n    var evt = this._event;\n\n    // In Safari, IE and in Chrome if 'wheel' isn't defined\n    evt.deltaX = (e.wheelDeltaX) ? e.wheelDeltaX : 0;\n    evt.deltaY = (e.wheelDeltaY) ? e.wheelDeltaY : e.wheelDelta;\n\n    this._notify(e);\n};\n\nVirtualScroll.prototype._onTouchStart = function(e) {\n    var t = (e.targetTouches) ? e.targetTouches[0] : e;\n    this.touchStartX = t.pageX;\n    this.touchStartY = t.pageY;\n};\n\nVirtualScroll.prototype._onTouchMove = function(e) {\n    var options = this.options;\n    if(options.preventTouch\n        && !e.target.classList.contains(options.unpreventTouchClass)) {\n        e.preventDefault();\n    }\n\n    var evt = this._event;\n\n    var t = (e.targetTouches) ? e.targetTouches[0] : e;\n\n    evt.deltaX = (t.pageX - this.touchStartX) * options.touchMultiplier;\n    evt.deltaY = (t.pageY - this.touchStartY) * options.touchMultiplier;\n\n    this.touchStartX = t.pageX;\n    this.touchStartY = t.pageY;\n\n    this._notify(e);\n};\n\nVirtualScroll.prototype._onKeyDown = function(e) {\n    var evt = this._event;\n    evt.deltaX = evt.deltaY = 0;\n\n    switch(e.keyCode) {\n        case keyCodes.LEFT:\n        case keyCodes.UP:\n            evt.deltaY = this.options.keyStep;\n            break;\n\n        case keyCodes.RIGHT:\n        case keyCodes.DOWN:\n            evt.deltaY = - this.options.keyStep;\n            break;\n\n        default:\n            return;\n    }\n\n    this._notify(e);\n};\n\nVirtualScroll.prototype._bind = function() {\n    if(support.hasWheelEvent) this.el.addEventListener('wheel', this._onWheel);\n    if(support.hasMouseWheelEvent) this.el.addEventListener('mousewheel', this._onMouseWheel);\n\n    if(support.hasTouch) {\n        this.el.addEventListener('touchstart', this._onTouchStart);\n        this.el.addEventListener('touchmove', this._onTouchMove);\n    }\n\n    if(support.hasPointer && support.hasTouchWin) {\n        this.bodyTouchAction = document.body.style.msTouchAction;\n        document.body.style.msTouchAction = 'none';\n        this.el.addEventListener('MSPointerDown', this._onTouchStart, true);\n        this.el.addEventListener('MSPointerMove', this._onTouchMove, true);\n    }\n\n    if(support.hasKeyDown) document.addEventListener('keydown', this._onKeyDown);\n};\n\nVirtualScroll.prototype._unbind = function() {\n    if(support.hasWheelEvent) this.el.removeEventListener('wheel', this._onWheel);\n    if(support.hasMouseWheelEvent) this.el.removeEventListener('mousewheel', this._onMouseWheel);\n\n    if(support.hasTouch) {\n        this.el.removeEventListener('touchstart', this._onTouchStart);\n        this.el.removeEventListener('touchmove', this._onTouchMove);\n    }\n\n    if(support.hasPointer && support.hasTouchWin) {\n        document.body.style.msTouchAction = this.bodyTouchAction;\n        this.el.removeEventListener('MSPointerDown', this._onTouchStart, true);\n        this.el.removeEventListener('MSPointerMove', this._onTouchMove, true);\n    }\n\n    if(support.hasKeyDown) document.removeEventListener('keydown', this._onKeyDown);\n};\n\nVirtualScroll.prototype.on = function(cb, ctx) {\n  this._emitter.on(EVT_ID, cb, ctx);\n\n  var events = this._emitter.e;\n  if (events && events[EVT_ID] && events[EVT_ID].length === 1) this._bind();\n};\n\nVirtualScroll.prototype.off = function(cb, ctx) {\n  this._emitter.off(EVT_ID, cb, ctx);\n\n  var events = this._emitter.e;\n  if (!events[EVT_ID] || events[EVT_ID].length <= 0) this._unbind();\n};\n\nVirtualScroll.prototype.reset = function() {\n    var evt = this._event;\n    evt.x = 0;\n    evt.y = 0;\n};\n\nVirtualScroll.prototype.destroy = function() {\n    this._emitter.off();\n    this._unbind();\n};\n","'use strict';\n\nmodule.exports = (function getSupport() {\n    return {\n        hasWheelEvent: 'onwheel' in document,\n        hasMouseWheelEvent: 'onmousewheel' in document,\n        hasTouch: 'ontouchstart' in document,\n        hasTouchWin: navigator.msMaxTouchPoints && navigator.msMaxTouchPoints > 1,\n        hasPointer: !!window.navigator.msPointerEnabled,\n        hasKeyDown: 'onkeydown' in document,\n        isFirefox: navigator.userAgent.indexOf('Firefox') > -1\n    };\n})();","import { EventEmitter } from 'events';\nimport VirtualScroll from 'virtual-scroll';\nimport raf from 'raf';\nimport transform from 'prefix';\n\nexport default class HorizontalScroll extends EventEmitter {\n\n\tconstructor(opts) {\n\t\tsuper();\n\n\t\tthis._bind();\n\n\t\t// Set default options\n\t\tthis.options = Object.assign({\n\t\t\tcontainer: opts.container,\n\t\t\tblocks: opts.blocks,\n\t\t\tisAnimated: opts.isAnimated || false,\n\t\t\tspring: opts.spring  || 0.1,\n\t\t\tskewReducer: opts.skewReducer || 20,\n\t\t\tskewLimit: opts.skewLimit || 30,\n\t\t}, opts);\n\n\t\tthis.vars = {\n\t\t\tscrollValue: 0,\n\t\t\toldScrollValue: 0,\n\t\t\tscrollTarget: 0,\n\t\t\tscrollLeft: 0,\n\t\t\tscrollRight: 0,\n\t\t\tspring: this.options.spring,\n\t\t\tdirection: 0,\n\t\t\tspeed: 0,\n\t\t\tspeedTarget: 0,\n\t\t};\n\n\t\tthis.wrapper = document.createElement('div');\n\t\tthis.wrapper.setAttribute('class', 'horizontal-scroll');\n\n\t\tthis.vs = new VirtualScroll();\n\t\tthis.transform = transform('transform');\n\n\t\tthis.raf = raf;\n\n\t\tthis._setUI();\n\t\tthis._addEvents();\n\t\tthis.onResize();\n\n\t}\n\n\t// PRIVATE\n\n\t/**\n\t * Biding methods\n\t *\n\t */\n\t_bind() {\n\t\tthis._update = this._update.bind(this);\n\t\tthis.onResize = this.onResize.bind(this);\n\t}\n\n\t/**\n\t * Add all events\n\t *\n\t */\n\t_addEvents() {\n\t\tthis.vs.on(this._onScroll, this);\n\t\tthis.raf(this._update);\n\t\twindow.addEventListener('resize', this.onResize);\n\t}\n\n\t/**\n\t * Remove all events\n\t *\n\t */\n\t_removeEvents() {\n\t\tthis.raf.cancel(this._update);\n\t\tthis.raf(this._update);\n\t\twindow.removeEventListener('resize', this.onResize);\n\t}\n\n\t/**\n\t * Set the UI\n\t *\n\t */\n\t_setUI() {\n\n\t\tObject.assign(this.wrapper.style ,{\n\t\t\tposition: 'absolute',\n\t\t\ttop: '0',\n\t\t\tleft: '0',\n\t\t\t'backface-visibility': 'hidden',\n\t\t\t'will-change': 'transform'\n\t\t});\n\n\t\tObject.assign(this.options.container[0].style ,{\n\t\t\t'white-space': 'nowrap',\n\t\t\t'position': 'relative',\n\t\t});\n\n\t\tArray.prototype.forEach.call(this.options.blocks, block => {\n\t\t\tblock.style.display = 'inline-block';\n\t\t\tthis.options.container[0].replaceChild(this.wrapper, block);\n\t\t\tthis.wrapper.appendChild(block);\n\t\t});\n\n\t\tthis.options.container[0].appendChild(this.wrapper);\n\n\t}\n\n\t/**\n\t * Trigger when user scroll\n\t *\n\t */\n\t_onScroll(e) {\n\n\t\tif (e.deltaY > 0) {\n\t\t\tthis.vars.direction = 1;\n\t\t} else {\n\t\t\tthis.vars.direction = -1;\n\t\t}\n\n\t\tthis.vars.scrollTarget += e.deltaY * -1;\n\t\tthis.vars.scrollTarget = Math.round(Math.max(this.vars.scrollLeft, Math.min(this.vars.scrollTarget, this.vars.scrollRight)));\n\n\t}\n\n\t/**\n\t * RAF\n\t *\n\t */\n\t_update() {\n\n\t\t// SCROLL VALUE\n\t\tthis.vars.scrollValue += (this.vars.scrollTarget - this.vars.scrollValue) * this.vars.spring;\n\n\t\t// DELTA\n\t\tlet delta = this.vars.scrollTarget - this.vars.scrollValue;\n\t\tlet skew = delta / this.options.skewReducer;\n\t\tthis.vars.speed = this._clamp(-skew, -this.options.skewLimit, this.options.skewLimit);\n\n\t\t// TRANSFORM\n\t\tif (this.options.isAnimated) {\n\t\t\tthis.wrapper.style[this.transform] = `translate3d(-${this.vars.scrollValue}px, 0 ,0) skewX(${this.vars.speed}deg)`;\n\t\t} else {\n\t\t\tthis.wrapper.style[this.transform] = `translate3d(-${this.vars.scrollValue}px, 0 ,0)`;\n\t\t}\n\n\t\tthis.vars.oldScrollValue = this.vars.scrollValue;\n\t\tthis.raf(this._update);\n\t}\n\n\t/**\n\t * CLAMP\n\t *\n\t */\n\t_clamp(num, min, max) {\n\t\treturn Math.min(Math.max(num, min), max);\n\t}\n\n\t// PUBLIC\n\n\t/**\n\t * Destroy variables and bind events\n\t *\n\t */\n\n\tonResize() {\n\t\tthis.vars.scrollLeft = 0;\n\t\tthis.vars.scrollRight = this.wrapper.getBoundingClientRect().width - window.innerWidth;\n\t}\n\n\tdestroy() {\n\t\tthis._removeEvents();\n\t}\n\n}\n"]}


--------------------------------------------------------------------------------
/examples/index.html:
--------------------------------------------------------------------------------
 1 | <!doctype html>
 2 | <html>
 3 | 	<head>
 4 | 		<meta charset="utf-8">
 5 | 		<meta http-equiv="x-ua-compatible" content="ie=edge">
 6 | 		<title>Horizontal Scroll</title>
 7 | 		<meta name="viewport" content="width=device-width, initial-scale=1">
 8 | 
 9 | 		<style>
10 | 
11 | 			html, body{
12 | 				width: 100%;
13 | 				height: 100%;
14 | 				overflow: hidden;
15 | 			}
16 | 
17 | 			body {
18 | 				margin: 0;
19 | 			}
20 | 
21 | 			h1 {
22 | 				margin: 50px;
23 | 				font-family: Helvetica;
24 | 			}
25 | 
26 | 			.block{
27 | 				width: 400px;
28 | 				height: 200px;
29 | 				margin: 50px;
30 | 			}
31 | 
32 | 			.container{
33 | 				margin-top: 200px;
34 | 			}
35 | 
36 | 			h2{
37 | 				font-size: 80px;
38 | 				font-family: Helvetica;
39 | 			}
40 | 
41 | 		</style>
42 | 	</head>
43 | 	<body>
44 | 		<h1>Horizontal scroll</h1>
45 | 		<div class="container">
46 | 
47 | 			<div class="block">
48 | 				<h2>Item 1</h2>
49 | 			</div>
50 | 
51 | 			<div class="block">
52 | 				<h2>Item 2</h2>
53 | 			</div>
54 | 
55 | 			<div class="block">
56 | 				<h2>Item 3</h2>
57 | 			</div>
58 | 
59 | 			<div class="block">
60 | 				<h2>Item 4</h2>
61 | 			</div>
62 | 
63 | 			<div class="block">
64 | 				<h2>Item 5</h2>
65 | 			</div>
66 | 
67 | 			<div class="block">
68 | 				<h2>Item 6</h2>
69 | 			</div>
70 | 
71 | 			<div class="block">
72 | 				<h2>Item 7</h2>
73 | 			</div>
74 | 
75 | 			<div class="block">
76 | 				<h2>Item 8</h2>
77 | 			</div>
78 | 
79 | 		</div>
80 | 		<script src="../dist/index.js"></script>
81 | 		<script>
82 | 
83 | 			var blocks = document.getElementsByClassName('block');
84 | 			var container = document.getElementsByClassName('container');
85 | 			var hs = new HorizontalScroll.default({
86 | 				blocks : blocks,
87 | 				container: container,
88 | 				isAnimated: true,
89 | 				springEffect: 0.8
90 | 			});
91 | 
92 | 		</script>
93 | 	</body>
94 | </html>
95 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "horizontal-scroll",
 3 |   "version": "1.0.1",
 4 |   "author": "Fardeau Corentin <fardeaucorentin@gmail.com>",
 5 |   "description": "Horizontal scroll with inertia",
 6 |   "main": "dist/index.js",
 7 |   "license": "MIT",
 8 |   "repository": {
 9 |     "type": "git",
10 |     "url": "https://github.com/corentinfardeau/horizontal-scroll"
11 |   },
12 |   "bugs": {
13 |     "url": "https://github.com/corentinfardeau/horizontal-scroll/issues"
14 |   },
15 |   "keywords": [
16 |     "scroll",
17 |     "horizontal-scroll",
18 |     "inertia",
19 |     "horizontal"
20 |   ],
21 |   "scripts": {
22 |     "clean": "rm -rf dist",
23 |     "watch": "npm run clean && parallelshell 'npm run watch:lint' 'npm run watch:js'",
24 |     "watch:lint": "esw -w src",
25 |     "watch:js": "mkdir -p dist && watchify src/index.js -vd -t browserify-shim -t [ babelify --presets [ es2015 ] ] -t brfs -s HorizontalScroll -o dist/index.js",
26 |     "build": "npm run build:lint && npm run clean && npm run build:js && npm run build:uglify",
27 |     "build:lint": "esw src",
28 |     "build:js": "mkdir dist && browserify src/index.js -d -t browserify-shim -t [ babelify --presets [ es2015 ] ] -t brfs -t [ uglifyify -x .js ] -s HorizontalScroll | exorcist dist/index.js.map > dist/index.js",
29 |     "build:uglify": "uglifyjs -cm --in-source-map dist/index.js.map --source-map dist/index.js.map --source-map-url index.js.map -o dist/index.js dist/index.js"
30 |   },
31 |   "devDependencies": {
32 |     "babel-preset-es2015": "6.18.0",
33 |     "babelify": "7.3.0",
34 |     "brfs": "1.4.3",
35 |     "browserify": "13.1.1",
36 |     "browserify-shim": "3.8.12",
37 |     "eslint": "3.12.2",
38 |     "eslint-watch": "2.1.14",
39 |     "exorcist": "0.4.0",
40 |     "parallelshell": "2.0.0",
41 |     "tape": "4.6.3",
42 |     "uglify": "0.1.5",
43 |     "uglifyify": "3.0.4",
44 |     "watchify": "3.8.0"
45 |   },
46 |   "dependencies": {
47 |     "prefix": "^1.0.0",
48 |     "raf": "^3.3.0",
49 |     "virtual-scroll": "^1.1.1"
50 |   },
51 |   "browserify-shim": {},
52 |   "browserify": {
53 |     "transform": [
54 |       [
55 |         "babelify",
56 |         {
57 |           "presets": [
58 |             "es2015"
59 |           ]
60 |         }
61 |       ]
62 |     ]
63 |   }
64 | }
65 | 


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
  1 | import { EventEmitter } from 'events';
  2 | import VirtualScroll from 'virtual-scroll';
  3 | import raf from 'raf';
  4 | import transform from 'prefix';
  5 | 
  6 | export default class HorizontalScroll extends EventEmitter {
  7 | 
  8 | 	constructor(opts) {
  9 | 		super();
 10 | 
 11 | 		this._bind();
 12 | 
 13 | 		// Set default options
 14 | 		this.options = Object.assign({
 15 | 			container: opts.container,
 16 | 			blocks: opts.blocks,
 17 | 			isAnimated: opts.isAnimated || false,
 18 | 			spring: opts.spring  || 0.1,
 19 | 			skewReducer: opts.skewReducer || 20,
 20 | 			skewLimit: opts.skewLimit || 30,
 21 | 		}, opts);
 22 | 
 23 | 		this.vars = {
 24 | 			scrollValue: 0,
 25 | 			oldScrollValue: 0,
 26 | 			scrollTarget: 0,
 27 | 			scrollLeft: 0,
 28 | 			scrollRight: 0,
 29 | 			spring: this.options.spring,
 30 | 			direction: 0,
 31 | 			speed: 0,
 32 | 			speedTarget: 0,
 33 | 		};
 34 | 
 35 | 		this.wrapper = document.createElement('div');
 36 | 		this.wrapper.setAttribute('class', 'horizontal-scroll');
 37 | 
 38 | 		this.vs = new VirtualScroll();
 39 | 		this.transform = transform('transform');
 40 | 
 41 | 		this.raf = raf;
 42 | 
 43 | 		this._setUI();
 44 | 		this._addEvents();
 45 | 		this.onResize();
 46 | 
 47 | 	}
 48 | 
 49 | 	// PRIVATE
 50 | 
 51 | 	/**
 52 | 	 * Biding methods
 53 | 	 *
 54 | 	 */
 55 | 	_bind() {
 56 | 		this._update = this._update.bind(this);
 57 | 		this.onResize = this.onResize.bind(this);
 58 | 	}
 59 | 
 60 | 	/**
 61 | 	 * Add all events
 62 | 	 *
 63 | 	 */
 64 | 	_addEvents() {
 65 | 		this.vs.on(this._onScroll, this);
 66 | 		this.raf(this._update);
 67 | 		window.addEventListener('resize', this.onResize);
 68 | 	}
 69 | 
 70 | 	/**
 71 | 	 * Remove all events
 72 | 	 *
 73 | 	 */
 74 | 	_removeEvents() {
 75 | 		this.raf.cancel(this._update);
 76 | 		this.raf(this._update);
 77 | 		window.removeEventListener('resize', this.onResize);
 78 | 	}
 79 | 
 80 | 	/**
 81 | 	 * Set the UI
 82 | 	 *
 83 | 	 */
 84 | 	_setUI() {
 85 | 
 86 | 		Object.assign(this.wrapper.style ,{
 87 | 			position: 'absolute',
 88 | 			top: '0',
 89 | 			left: '0',
 90 | 			'backface-visibility': 'hidden',
 91 | 			'will-change': 'transform'
 92 | 		});
 93 | 
 94 | 		Object.assign(this.options.container[0].style ,{
 95 | 			'white-space': 'nowrap',
 96 | 			'position': 'relative',
 97 | 		});
 98 | 
 99 | 		Array.prototype.forEach.call(this.options.blocks, block => {
100 | 			block.style.display = 'inline-block';
101 | 			this.options.container[0].replaceChild(this.wrapper, block);
102 | 			this.wrapper.appendChild(block);
103 | 		});
104 | 
105 | 		this.options.container[0].appendChild(this.wrapper);
106 | 
107 | 	}
108 | 
109 | 	/**
110 | 	 * Trigger when user scroll
111 | 	 *
112 | 	 */
113 | 	_onScroll(e) {
114 | 
115 | 		if (e.deltaY > 0) {
116 | 			this.vars.direction = 1;
117 | 		} else {
118 | 			this.vars.direction = -1;
119 | 		}
120 | 
121 | 		this.vars.scrollTarget += e.deltaY * -1;
122 | 		this.vars.scrollTarget = Math.round(Math.max(this.vars.scrollLeft, Math.min(this.vars.scrollTarget, this.vars.scrollRight)));
123 | 
124 | 	}
125 | 
126 | 	/**
127 | 	 * RAF
128 | 	 *
129 | 	 */
130 | 	_update() {
131 | 
132 | 		// SCROLL VALUE
133 | 		this.vars.scrollValue += (this.vars.scrollTarget - this.vars.scrollValue) * this.vars.spring;
134 | 
135 | 		// DELTA
136 | 		let delta = this.vars.scrollTarget - this.vars.scrollValue;
137 | 		let skew = delta / this.options.skewReducer;
138 | 		this.vars.speed = this._clamp(-skew, -this.options.skewLimit, this.options.skewLimit);
139 | 
140 | 		// TRANSFORM
141 | 		if (this.options.isAnimated) {
142 | 			this.wrapper.style[this.transform] = `translate3d(-${this.vars.scrollValue}px, 0 ,0) skewX(${this.vars.speed}deg)`;
143 | 		} else {
144 | 			this.wrapper.style[this.transform] = `translate3d(-${this.vars.scrollValue}px, 0 ,0)`;
145 | 		}
146 | 
147 | 		this.vars.oldScrollValue = this.vars.scrollValue;
148 | 		this.raf(this._update);
149 | 	}
150 | 
151 | 	/**
152 | 	 * CLAMP
153 | 	 *
154 | 	 */
155 | 	_clamp(num, min, max) {
156 | 		return Math.min(Math.max(num, min), max);
157 | 	}
158 | 
159 | 	// PUBLIC
160 | 
161 | 	/**
162 | 	 * Destroy variables and bind events
163 | 	 *
164 | 	 */
165 | 
166 | 	onResize() {
167 | 		this.vars.scrollLeft = 0;
168 | 		this.vars.scrollRight = this.wrapper.getBoundingClientRect().width - window.innerWidth;
169 | 	}
170 | 
171 | 	destroy() {
172 | 		this._removeEvents();
173 | 	}
174 | 
175 | }
176 | 


--------------------------------------------------------------------------------
/src/range.js:
--------------------------------------------------------------------------------
 1 | 'use strict';
 2 | 
 3 | /**
 4 |  * Return a new value linearly interpolate between a new min and max,
 5 |  * depending on his old range
 6 |  * @param  {Number} val    The value we want to interpolate
 7 |  * @param  {Number} oldMin The old lowest value
 8 |  * @param  {Number} oldMax The old higher value
 9 |  * @param  {Number} newMin The new lowest value
10 |  * @param  {Number} newMax The new higher value
11 |  * @return {Number}        The new interpolated value
12 |  */
13 | export default function changeRange(val, oldMin, oldMax, newMin, newMax) {
14 | 	return (val - oldMin) * (newMax - newMin) / (oldMax - oldMin) + newMin;
15 | }
16 | 


--------------------------------------------------------------------------------