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HTML 

              
                header
  h1.small Material Design
  h2 Calendar Concept
div(ng-app='app')
  calendar
!

CSS 

              
                @import "compass/css3";

@import url(https://fonts.googleapis.com/css?family=Roboto:100,300);
@import "compass/utilities/general/clearfix";

$spacing  : 3px;
$size     : 74px;
$duration : 0.35s;
$ease-out : cubic-bezier(0.25, 0.8, 0.25, 1);
$ease-in  : cubic-bezier(0.55, 0, 0.55, 0.2);
$colors   : (
  darkPrimary: #303F9F,
  lightPrimary: #C5CAE9,
  primary: #3F51B5,
  accent: #8BC34A,
  primaryText: #212121,
  secondaryText: #727272,
  divider: #B6B6B6,
  text: #FFFFFF
);

body {
  font: 300 16px/20px Roboto, Lato, sans-serif;
  padding: 0;
  margin: 0;
  > header {
    background: map-get($colors, darkPrimary);
    padding: $size * 0.5;
  }
}
[ng-app] {
  width: ($spacing + $size) * 7;
  padding: $size * 0.5;
}
h1.small {
  font-size: 16px;
  line-height: 22px;
  margin: 0;
  text-transform: uppercase;
  text-indent: 5px;
  color: tint(map-get($colors, accent), 20%);
}
h2 {
  font-size: 45px;
  line-height: 48px;
  margin: 0;
  color: map-get($colors, text);
}
p {
  margin: 2em 0;
}
.light {
  font-weight: 100;
}
calendar {
  @include pie-clearfix();
  clear: left;
  margin: $spacing 0;
  display: block;
  > header {
    color: map-get($colors, primaryText);
    font-size: 32px;
    padding: 0;
    text-align: center;
    margin: 0 $spacing $spacing 0;
    margin-right: $size * 1.25 + $spacing * 2;
    margin-left: $size * 1.25 + $spacing;
    margin-bottom: $size * 0.25;
    border-radius: 2px;
    font-weight: 100;
    position: relative;
    line-height: $size * 0.5;
    height: $size * 0.5;
    a {
      cursor: pointer;
      position: absolute;
      top: 0;
      bottom: 0;
      height: $size * 0.5;
      width: $size * 0.5;
      user-select: none;
      background: map-get($colors, text);
      box-shadow: 0 0 5px rgba(0, 0, 0, 0.125),
                  0 2px 5px rgba(0, 0, 0, 0.125);
      transition: 0.35s ease;
      border-radius: 50%;
      &.disabled {
        cursor: default;
      }
      &:hover {
        background: shade(map-get($colors, text), 2%);
        box-shadow: 0 0 8px rgba(0, 0, 0, 0.125),
                    0 5px 8px rgba(0, 0, 0, 0.125);
      }
      &:before {
        content: '';
        width: 0;
        height: 0;
        border-width: 9px;
        border-style: solid;
        border-color: transparent map-get($colors, accent);
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translateX(-50%) translateY(-50%);
      }
    }
    .back {
      left: 0;
      &:before {
        border-left: none;
        margin-left: -2px;
      }
    }
    .forward {
      right: 0;
      &:before {
        border-right: none;
        margin-left: 2px;
      }
    }
  }
}

.day-header {
  @include clearfix();
  .day {
    float: left;
    line-height: $size * 0.5;
    height: $size * 0.5;
    display: block;
    width: $size;
    margin: 0 $spacing $spacing 0;
    background: map-get($colors, accent);
    text-align: center;
    color: map-get($colors, text);
    font-size: 14px;
    text-transform: uppercase;
    border-radius: 2px;
  }
}

.day-content {
  position: relative;
  height: $size * 7;
}

day {
  background: map-get($colors, primary);
  color: map-get($colors, text);
  width: $size;
  height: $size;
  display: block;
  float: left;
  margin: 0 $spacing $spacing 0;
  text-align: center;
  line-height: $size;
  font-size: 38px;
  font-weight: 100;
  border-radius: 2px;
  transition: $duration $ease-in;
  position: absolute;
  @for $row from 1 to 7 {
    &[data-row='#{$row}'] { top: ($size + $spacing) * $row; }
  }
  @for $col from 1 to 7 {
    &[data-col='#{$col}'] { left: ($size + $spacing) * $col; }
  }
  &[data-col='0'], &[data-col='6'] {
    background: tint(map-get($colors, primary), 30%);
  }
  &.inactive {
    background: map-get($colors, divider);
    &[data-col='0'], &[data-col='6'] {
      background: tint(map-get($colors, divider), 50%);
    }
  }
  @for $col from 0 to 7 {
    @for $row from 0 to 7 {
      &[data-col='#{$col}'][data-row='#{$row}'] {
        $rCol: 7 - $col;
        $dist: sqrt($rCol * $rCol + $row * $row);
        $max:  sqrt(6 * 6 + 4 * 4);
        $perc: $dist / $max;
        $delay: $perc * 0.5s;
        &.ng-enter { transition-delay: $delay + $duration + 0.05s; }
        &.ng-leave { transition-delay: $delay; }
        @at-root .back & {
          $dist: sqrt($col * $col + $row * $row);
          $perc: $dist / $max;
          $delay: $perc * 0.5s;
          &.ng-enter { transition-delay: $delay + $duration + 0.05s; }
          &.ng-leave { transition-delay: $delay; }
        }
      }
    }
  }
  &.ng-enter {
    transform: scale(0);
    transition: $duration $ease-out;
    &.ng-enter-active {
      transform: scale(1);
    }
  }
  &.ng-leave {
    transition: $duration $ease-in;
    transform: scale(1);
    &.ng-leave-active {
      transform: scale(0);
    }
  }
}

.date-wrapper {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 47px;
  right: 50px;
  overflow: hidden;
  span {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    transition: 0.65s ease-in-out;
    transform: translateX(0);
    &.ng-enter {
      transform: translateX(100%);
      opacity: 0;
      @at-root .back & { transform: translateX(-100%); }
      &.ng-enter-active {
        transform: translateX(0);
        opacity: 1;
      }
    }
    &.ng-leave {
      transform: translateX(0);
      opacity: 1;
      &.ng-leave-active {
        transform: translateX(-100%);
        opacity: 0;
        @at-root .back & { transform: translateX(100%); }
      }
    }
  }
}
!

JS 

              
                angular.module('app', ['ngAnimate'])
    .controller('calendarCtrl', calendarCtrl)
    .directive('calendar', calendar)
    .directive('day', day);

function calendarCtrl($scope, $timeout, $element) {
  var ctrl = $scope.ctrl = this;
  $scope.$watch('ctrl.day', function () { ctrl.updateDate(ctrl); });
  
  this.months = 'January February March April May June July August September October November December'.split(' ');
  this.day = new Date();
  this.preDays = [];
  this.days = [];
  this.postDays = [];
  this.headings = [''];
  this.monthName = '';
  this.back = false;
  this.locked = false;
  this.lockTime = 500 + 350 * 2;

  
  this.next = function () {
    if (this.locked) return;
    this.locked = true;
    $timeout(function () { this.locked = false; }.bind(this), this.lockTime);
    this.day.setMonth(this.day.getMonth() + 1);
    this.back = false;
    $element.removeClass('back');
    this.updateDate();
  };
  this.prev = function () {
    if (this.locked) return;
    this.locked = true;
    $timeout(function () { this.locked = false; }.bind(this), this.lockTime);
    this.day.setMonth(this.day.getMonth() - 1);
    this.back = true;
    $element.addClass('back');
    this.updateDate();
  };
  this.updateDate = function (day) {
    this.day.setDate(1);
    this.preDays = this.getDays(this.day.getDay(), 0);
    this.days = this.getDays(this.getDaysInMonth(), this.preDays.length);
    this.postDays = this.getDays(
      (7 - (this.preDays.length + this.days.length) % 7) % 7,
      this.preDays.length + this.days.length
    );
    this.monthName = this.months[this.day.getMonth()];
    this.headings = [{ month: this.monthName, year: this.day.getFullYear() }];
  };
  this.setDelay = function (item) {
    var left = item.prop('offsetLeft') - $element.prop('offsetLeft'),
        top = item.prop('offsetTop') - $element.prop('offsetTop'),
        dist = Math.sqrt(left * left + top * top),
        delay = dist * 0.75;
    item.css('transition-delay', delay + 'ms');
  };
  this.getDays = function (count, start) {
    var days = [], i;
    for (i = start; i < count + start; i++) {
      days.push({ col: i % 7, row: Math.floor(i / 7) });
    }
    return days;
  };
  this.getDaysInMonth = function () {
    switch (this.day.getMonth()) {
      case 1: return new Date(this.day.getFullYear(), 1, 29).getMonth() == 1 ? 29 : 28;
      case 3: case 5: case 8: case 10: return 30;
      default: return 31;
    }
  };
}
function calendar() {
  return {
    template: '\
      <header>\
        <a ng-click="ctrl.prev()" class="back" ng-class="{ disabled: ctrl.locked }"></a>\
        <div class="date-wrapper">\
          <span class="title" ng-repeat="heading in ctrl.headings">{{heading.month}} {{heading.year}}</span>\
        </div>\
        <a ng-click="ctrl.next()" class="forward" ng-class="{ disabled: ctrl.locked }"></a>\
      </header>\
      <section class="day-header">\
        <div class="day">Sun</div>\
        <div class="day">Mon</div>\
        <div class="day">Tue</div>\
        <div class="day">Wed</div>\
        <div class="day">Thu</div>\
        <div class="day">Fri</div>\
        <div class="day">Sat</div>\
      </section>\
      <section class="day-content">\
        <day ng-repeat="day in ctrl.preDays" class="inactive" data-col="{{day.col}}" data-row="{{day.row}}"></day>\
        <day ng-repeat="day in ctrl.days" data-col="{{day.col}}" data-row="{{day.row}}">{{$index + 1}}</day>\
        <day ng-repeat="day in ctrl.postDays" class="inactive" data-col="{{day.col}}" data-row="{{day.row}}"></day>\
      </section>\
    ',
    controller: 'calendarCtrl'
  };
}
function day($timeout, $window) {
  return { require: '^calendar', link: link };
  function link(scope, element, attr, ctrl) {}
}
!
999px

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