|
| 1 | +(function($) { |
| 2 | + |
| 3 | + var Flapper = function($ele, options) { |
| 4 | + var _this = this; |
| 5 | + this.id = Math.floor(Math.random() * 1000) + 1; |
| 6 | + this.$ele = $ele; |
| 7 | + this.options = $.extend({}, this.defaults, options); |
| 8 | + |
| 9 | + this.$div = $('<div class="flapper"><div class="stripe"></div></div>'); |
| 10 | + this.$ele.hide().after(this.$div); |
| 11 | + |
| 12 | + this.$ele.change(function(){ |
| 13 | + _this.update(); |
| 14 | + }); |
| 15 | + |
| 16 | + this.init(); |
| 17 | + } |
| 18 | + |
| 19 | + Flapper.prototype = { |
| 20 | + defaults: { |
| 21 | + width: 6, |
| 22 | + framerate: 100, |
| 23 | + padding: ' ', |
| 24 | + commafy: false, |
| 25 | + prefix: null, |
| 26 | + hidepadding: false, |
| 27 | + comma: ',' |
| 28 | + }, |
| 29 | + |
| 30 | + init: function() { |
| 31 | + this.currval = this.$ele.val() || 0; |
| 32 | + this.$digits = []; |
| 33 | + this.targets = []; |
| 34 | + this.positions = []; |
| 35 | + |
| 36 | + if (this.options.padding == null) { |
| 37 | + this.options.padding = ' '; |
| 38 | + this.options.hidepadding = true; |
| 39 | + } |
| 40 | + |
| 41 | + for (i=0; i<this.options.width; i++) { |
| 42 | + this.$digits[i] = $('<span class="digit">'+this.options.padding+'</span>'); |
| 43 | + this.$div.prepend(this.$digits[i]); |
| 44 | + this.positions[i] = this.options.padding; |
| 45 | + } |
| 46 | + |
| 47 | + this.update(); |
| 48 | + }, |
| 49 | + |
| 50 | + update: function() { |
| 51 | + var _this = this; |
| 52 | + if (this.timer) { |
| 53 | + clearInterval(this.timer); |
| 54 | + } |
| 55 | + |
| 56 | + this.setDisplayTargets(); |
| 57 | + |
| 58 | + this.timer = setInterval(function(){ |
| 59 | + var changed = false; |
| 60 | + |
| 61 | + for (var i=0; i<_this.options.width; i++) { |
| 62 | + var current = _this.positions[i]; |
| 63 | + var target = _this.targets[i]; |
| 64 | + |
| 65 | + if (current != target) { |
| 66 | + if (!target && current == 0) { |
| 67 | + _this.setDigit(i, _this.options.padding); |
| 68 | + _this.positions[i] = target; |
| 69 | + |
| 70 | + } else if (isNaN(target) && current == 0) { |
| 71 | + _this.setDigit(i, target); |
| 72 | + |
| 73 | + } else { |
| 74 | + _this.incrementDigit(i); |
| 75 | + changed = true; |
| 76 | + } |
| 77 | + } |
| 78 | + } |
| 79 | + |
| 80 | + if (!changed) { |
| 81 | + clearInterval(_this.timer); |
| 82 | + |
| 83 | + for (var i=0; i<_this.options.width; i++) { |
| 84 | + if (_this.targets[i] == null) { |
| 85 | + _this.$digits[i].hide(); |
| 86 | + } |
| 87 | + } |
| 88 | + } |
| 89 | + |
| 90 | + }, this.options.framerate); |
| 91 | + |
| 92 | + }, |
| 93 | + |
| 94 | + setDisplayTargets: function() { |
| 95 | + var _this = this; |
| 96 | + var val = this.$ele.val(); |
| 97 | + var dnew = this.getDigits(val); |
| 98 | + var padout = this.options.padding && |
| 99 | + this.options.padding != ' '; |
| 100 | + var prefixed = false; |
| 101 | + var i = 0; |
| 102 | + var d = 0; |
| 103 | + |
| 104 | + do { |
| 105 | + if (d < dnew.length || padout) { |
| 106 | + if (_this.options.commafy && (i % 4 == 3)) { |
| 107 | + _this.targets[i] = _this.options.comma; |
| 108 | + continue; |
| 109 | + } |
| 110 | + } |
| 111 | + |
| 112 | + if (d < dnew.length) { |
| 113 | + _this.targets[i] = dnew[d]; |
| 114 | + d++; |
| 115 | + |
| 116 | + } else { |
| 117 | + |
| 118 | + if (_this.options.prefix) { |
| 119 | + |
| 120 | + if (!prefixed && !padout) { |
| 121 | + _this.targets[i] = _this.options.prefix; |
| 122 | + prefixed = true; |
| 123 | + continue; |
| 124 | + } |
| 125 | + |
| 126 | + if (!prefixed && i == _this.options.width - 1) { |
| 127 | + _this.targets[i] = _this.options.prefix; |
| 128 | + prefixed = true; |
| 129 | + continue; |
| 130 | + } |
| 131 | + |
| 132 | + } |
| 133 | + |
| 134 | + if (_this.options.hidepadding) { |
| 135 | + _this.targets[i] = null; |
| 136 | + } else { |
| 137 | + _this.targets[i] = _this.options.padding; |
| 138 | + } |
| 139 | + } |
| 140 | + |
| 141 | + } while (++i < _this.options.width); |
| 142 | + }, |
| 143 | + |
| 144 | + incrementDigit: function(i) { |
| 145 | + var n = parseInt(this.positions[i], 10); |
| 146 | + if (isNaN(n)) { |
| 147 | + n = 0; |
| 148 | + } else { |
| 149 | + n++; |
| 150 | + if (n > 9) { |
| 151 | + n -= 10; |
| 152 | + } |
| 153 | + } |
| 154 | + |
| 155 | + this.$digits[i].show().html(n+''); |
| 156 | + this.positions[i] = n; |
| 157 | + }, |
| 158 | + |
| 159 | + setDigit: function(i, v) { |
| 160 | + this.$digits[i].show().html(v); |
| 161 | + this.positions[i] = v; |
| 162 | + }, |
| 163 | + |
| 164 | + getDigits: function(val, length) { |
| 165 | + var ret = []; |
| 166 | + var num = val; |
| 167 | + |
| 168 | + if (num == 0) { |
| 169 | + return [0]; |
| 170 | + } |
| 171 | + |
| 172 | + while (num > 0) { |
| 173 | + ret.push(num % 10); |
| 174 | + num = Math.floor(num / 10); |
| 175 | + } |
| 176 | + |
| 177 | + return ret; |
| 178 | + }, |
| 179 | + } |
| 180 | + |
| 181 | + $.fn.flapper = function(options) { |
| 182 | + this.each(function(){ |
| 183 | + new Flapper($(this), options); |
| 184 | + }) |
| 185 | + } |
| 186 | + |
| 187 | +})(jQuery); |
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