| 1 | /* |
| 2 | PlotKit |
| 3 | ======= |
| 4 | PlotKit is a collection of Javascript classes that allows |
| 5 | you to quickly visualise data using different types of charts. |
| 6 | |
| 7 | For license/info/documentation: http://www.liquidx.net/plotkit/ |
| 8 | |
| 9 | Copyright |
| 10 | --------- |
| 11 | Copyright 2005,2006 (c) Alastair Tse <alastair^liquidx.net> |
| 12 | For use under the BSD license. <http://www.liquidx.net/plotkit> |
| 13 | */ |
| 14 | |
| 15 | // -------------------------------------------------------------------- |
| 16 | // Check required components |
| 17 | // -------------------------------------------------------------------- |
| 18 | |
| 19 | try { |
| 20 | if (typeof(MochiKit.Base) == 'undefined' || |
| 21 | typeof(MochiKit.DOM) == 'undefined' || |
| 22 | typeof(MochiKit.Color) == 'undefined' || |
| 23 | typeof(MochiKit.Format) == 'undefined') |
| 24 | { |
| 25 | throw ""; |
| 26 | } |
| 27 | } |
| 28 | catch (e) { |
| 29 | throw "PlotKit depends on MochiKit.{Base,Color,DOM,Format}" |
| 30 | } |
| 31 | |
| 32 | // ------------------------------------------------------------------- |
| 33 | // Inject Common Shortcuts we use into MochiKit.Color.Color |
| 34 | // ------------------------------------------------------------------- |
| 35 | |
| 36 | MochiKit.Base.update(MochiKit.Color.Color.prototype, { |
| 37 | asFillColor: function() { |
| 38 | return this.lighterColorWithLevel(0.3); |
| 39 | }, |
| 40 | |
| 41 | asStrokeColor: function() { |
| 42 | return this.darkerColorWithLevel(0.1); |
| 43 | }, |
| 44 | |
| 45 | asPointColor: function() { |
| 46 | return this.lighterColorWithLevel(0.1); |
| 47 | } |
| 48 | }); |
| 49 | |
| 50 | |
| 51 | // ------------------------------------------------------------------- |
| 52 | // Define our own PlotKit namespace |
| 53 | // ------------------------------------------------------------------- |
| 54 | |
| 55 | if (typeof(PlotKit) == 'undefined') { |
| 56 | PlotKit = {}; |
| 57 | } |
| 58 | |
| 59 | PlotKit.NAME = "PlotKit"; |
| 60 | PlotKit.VERSION = "0.8"; |
| 61 | PlotKit.__repr__ = function() { |
| 62 | return "[" + this.NAME + " " + this.VERSION + "]"; |
| 63 | }; |
| 64 | |
| 65 | PlotKit.toString = function() { |
| 66 | return this.__repr__(); |
| 67 | } |
| 68 | |
| 69 | // ------------------------------------------------------------------- |
| 70 | // Encapsulate all our utility function into it's own namespace. |
| 71 | // ------------------------------------------------------------------- |
| 72 | |
| 73 | if (typeof(PlotKit.Base) == 'undefined') { |
| 74 | PlotKit.Base = {}; |
| 75 | } |
| 76 | |
| 77 | PlotKit.Base.NAME = 'PlotKit.Base'; |
| 78 | PlotKit.Base.VERSION = PlotKit.VERSION; |
| 79 | |
| 80 | PlotKit.Base.__repr__ = function() { |
| 81 | return "[" + this.NAME + " " + this.VERSION + "]"; |
| 82 | }; |
| 83 | |
| 84 | PlotKit.Base.toString = function() { |
| 85 | return this.__repr__(); |
| 86 | } |
| 87 | |
| 88 | |
| 89 | // Detect whether we are using prototype.js |
| 90 | PlotKit.Base.usingPrototype = function() { |
| 91 | try { |
| 92 | return (typeof(Object.extend) == 'function'); |
| 93 | } |
| 94 | catch (e) { |
| 95 | return false; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | |
| 100 | MochiKit.Base.update(PlotKit.Base, { |
| 101 | roundInterval: function(range, intervals, precision) { |
| 102 | // We want to make the interval look regular, |
| 103 | var trunc = MochiKit.Format.roundToFixed; |
| 104 | var sep = range/intervals; |
| 105 | return parseFloat(trunc(sep, precision)); |
| 106 | }, |
| 107 | |
| 108 | collapse: function(lst) { |
| 109 | var m = MochiKit.Base; |
| 110 | var biggerList = new Array(); |
| 111 | for (var i = 0; i < lst.length; i++) { |
| 112 | biggerList = m.concat(biggerList, lst[i]); |
| 113 | } |
| 114 | if (PlotKit.Base.usingPrototype()) { |
| 115 | delete biggerList.extend; |
| 116 | delete biggerList.from; |
| 117 | delete biggerList.inspect; |
| 118 | } |
| 119 | |
| 120 | return biggerList; |
| 121 | }, |
| 122 | |
| 123 | uniq: function(sortedList) { |
| 124 | // get unique elements in list, exactly the same as unix shell's uniq. |
| 125 | var m = MochiKit.Base; |
| 126 | |
| 127 | if (!m.isArrayLike(sortedList) || (sortedList.length < 1)) |
| 128 | return new Array(); |
| 129 | |
| 130 | var uniq = new Array(); |
| 131 | var lastElem = sortedList[0]; |
| 132 | uniq.push(sortedList[0]); |
| 133 | for (var i = 1; i < sortedList.length; i++) { |
| 134 | if (m.compare(sortedList[i], lastElem) != 0) { |
| 135 | lastElem = sortedList[i]; |
| 136 | uniq.push(sortedList[i]); |
| 137 | } |
| 138 | } |
| 139 | return uniq; |
| 140 | }, |
| 141 | |
| 142 | |
| 143 | palette: function(baseColor, fromLevel, toLevel, increment) { |
| 144 | var isNil = MochiKit.Base.isUndefinedOrNull; |
| 145 | var fractions = new Array(); |
| 146 | if (isNil(increment)) |
| 147 | increment = 0.1; |
| 148 | if (isNil(toLevel)) |
| 149 | toLevel = 0.4; |
| 150 | if (isNil(fromLevel)) |
| 151 | fromLevel = -0.2; |
| 152 | |
| 153 | var level = fromLevel; |
| 154 | while (level <= toLevel) { |
| 155 | fractions.push(level); |
| 156 | level += increment; |
| 157 | } |
| 158 | |
| 159 | var makeColor = function(color, fraction) { |
| 160 | return color.lighterColorWithLevel(fraction); |
| 161 | }; |
| 162 | return MochiKit.Base.map(partial(makeColor, baseColor), fractions); |
| 163 | }, |
| 164 | |
| 165 | excanvasSupported: function() { |
| 166 | if (/MSIE/.test(navigator.userAgent) && !window.opera) { |
| 167 | return true; |
| 168 | } |
| 169 | return false; |
| 170 | }, |
| 171 | |
| 172 | // The following functions are from quirksmode.org |
| 173 | // http://www.quirksmode.org/js/findpos.html |
| 174 | |
| 175 | findPosX: function(obj) { |
| 176 | var curleft = 0; |
| 177 | if (obj.offsetParent) { |
| 178 | while (obj.offsetParent) { |
| 179 | curleft += obj.offsetLeft |
| 180 | obj = obj.offsetParent; |
| 181 | } |
| 182 | } |
| 183 | else if (obj.x) |
| 184 | curleft += obj.x; |
| 185 | return curleft; |
| 186 | }, |
| 187 | |
| 188 | findPosY: function(obj) { |
| 189 | var curtop = 0; |
| 190 | if (obj.offsetParent) { |
| 191 | while (obj.offsetParent) { |
| 192 | curtop += obj.offsetTop |
| 193 | obj = obj.offsetParent; |
| 194 | } |
| 195 | } |
| 196 | else if (obj.y) |
| 197 | curtop += obj.y; |
| 198 | return curtop; |
| 199 | }, |
| 200 | |
| 201 | isFuncLike: function(obj) { |
| 202 | return (typeof(obj) == 'function'); |
| 203 | } |
| 204 | }); |
| 205 | |
| 206 | // |
| 207 | // Prototype.js aware (crippled) versions of map and items. |
| 208 | // |
| 209 | |
| 210 | PlotKit.Base.map = function(fn, lst) { |
| 211 | if (PlotKit.Base.usingPrototype()) { |
| 212 | var rval = []; |
| 213 | for (var x in lst) { |
| 214 | if (typeof(lst[x]) == 'function') continue; |
| 215 | rval.push(fn(lst[x])); |
| 216 | } |
| 217 | return rval; |
| 218 | } |
| 219 | else { |
| 220 | return MochiKit.Base.map(fn, lst); |
| 221 | } |
| 222 | }; |
| 223 | |
| 224 | PlotKit.Base.items = function(lst) { |
| 225 | if (PlotKit.Base.usingPrototype()) { |
| 226 | var rval = []; |
| 227 | for (var x in lst) { |
| 228 | if (typeof(lst[x]) == 'function') continue; |
| 229 | rval.push([x, lst[x]]); |
| 230 | } |
| 231 | return rval; |
| 232 | } |
| 233 | else { |
| 234 | return MochiKit.Base.items(lst); |
| 235 | } |
| 236 | }; |
| 237 | |
| 238 | PlotKit.Base.keys = function(lst) { |
| 239 | if (PlotKit.Base.usingPrototype()) { |
| 240 | var rval = []; |
| 241 | for (var x in lst) { |
| 242 | if (typeof(lst[x]) == 'function') continue; |
| 243 | rval.push(x); |
| 244 | } |
| 245 | return rval; |
| 246 | } |
| 247 | else { |
| 248 | return MochiKit.Base.keys(lst); |
| 249 | } |
| 250 | }; |
| 251 | |
| 252 | // |
| 253 | // colour schemes |
| 254 | // |
| 255 | PlotKit.Base.baseColors = function () { |
| 256 | var hexColor = MochiKit.Color.Color.fromHexString; |
| 257 | return [hexColor("#476fb2"), |
| 258 | hexColor("#be2c2b"), |
| 259 | hexColor("#85b730"), |
| 260 | hexColor("#734a99"), |
| 261 | hexColor("#26a1c5"), |
| 262 | hexColor("#fb8707"), |
| 263 | hexColor("#000000")]; |
| 264 | }; |
| 265 | |
| 266 | PlotKit.Base.EXPORT = [ |
| 267 | "baseColors", |
| 268 | "collapse", |
| 269 | "findPosX", |
| 270 | "findPosY", |
| 271 | "roundInterval", |
| 272 | "uniq", |
| 273 | "isFuncLike", |
| 274 | "excanvasSupported" |
| 275 | ]; |
| 276 | |
| 277 | PlotKit.Base.EXPORT_OK = []; |
| 278 | |
| 279 | PlotKit.Base.__new__ = function() { |
| 280 | var m = MochiKit.Base; |
| 281 | |
| 282 | m.nameFunctions(this); |
| 283 | |
| 284 | this.EXPORT_TAGS = { |
| 285 | ":common": this.EXPORT, |
| 286 | ":all": m.concat(this.EXPORT, this.EXPORT_OK) |
| 287 | }; |
| 288 | }; |
| 289 | |
| 290 | PlotKit.Base.__new__(); |
| 291 | MochiKit.Base._exportSymbols(this, PlotKit.Base); |
| 292 | |