1/*! Javascript plotting library for jQuery, v. 0.7. 2 * 3 * Released under the MIT license by IOLA, December 2007. 4 * 5 */ 6 7// first an inline dependency, jquery.colorhelpers.js, we inline it here 8// for convenience 9 10/* Plugin for jQuery for working with colors. 11 * 12 * Version 1.1. 13 * 14 * Inspiration from jQuery color animation plugin by John Resig. 15 * 16 * Released under the MIT license by Ole Laursen, October 2009. 17 * 18 * Examples: 19 * 20 * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString() 21 * var c = $.color.extract($("#mydiv"), 'background-color'); 22 * console.log(c.r, c.g, c.b, c.a); 23 * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)" 24 * 25 * Note that .scale() and .add() return the same modified object 26 * instead of making a new one. 27 * 28 * V. 1.1: Fix error handling so e.g. parsing an empty string does 29 * produce a color rather than just crashing. 30 */ 31(function(B){B.color={};B.color.make=function(F,E,C,D){var G={};G.r=F||0;G.g=E||0;G.b=C||0;G.a=D!=null?D:1;G.add=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]+=I}return G.normalize()};G.scale=function(J,I){for(var H=0;H<J.length;++H){G[J.charAt(H)]*=I}return G.normalize()};G.toString=function(){if(G.a>=1){return"rgb("+[G.r,G.g,G.b].join(",")+")"}else{return"rgba("+[G.r,G.g,G.b,G.a].join(",")+")"}};G.normalize=function(){function H(J,K,I){return K<J?J:(K>I?I:K)}G.r=H(0,parseInt(G.r),255);G.g=H(0,parseInt(G.g),255);G.b=H(0,parseInt(G.b),255);G.a=H(0,G.a,1);return G};G.clone=function(){return B.color.make(G.r,G.b,G.g,G.a)};return G.normalize()};B.color.extract=function(D,C){var E;do{E=D.css(C).toLowerCase();if(E!=""&&E!="transparent"){break}D=D.parent()}while(!B.nodeName(D.get(0),"body"));if(E=="rgba(0, 0, 0, 0)"){E="transparent"}return B.color.parse(E)};B.color.parse=function(F){var E,C=B.color.make;if(E=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10))}if(E=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseInt(E[1],10),parseInt(E[2],10),parseInt(E[3],10),parseFloat(E[4]))}if(E=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55)}if(E=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(F)){return C(parseFloat(E[1])*2.55,parseFloat(E[2])*2.55,parseFloat(E[3])*2.55,parseFloat(E[4]))}if(E=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(F)){return C(parseInt(E[1],16),parseInt(E[2],16),parseInt(E[3],16))}if(E=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(F)){return C(parseInt(E[1]+E[1],16),parseInt(E[2]+E[2],16),parseInt(E[3]+E[3],16))}var D=B.trim(F).toLowerCase();if(D=="transparent"){return C(255,255,255,0)}else{E=A[D]||[0,0,0];return C(E[0],E[1],E[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})(jQuery); 32 33// the actual Flot code 34(function($) { 35 function Plot(placeholder, data_, options_, plugins) { 36 // data is on the form: 37 // [ series1, series2 ... ] 38 // where series is either just the data as [ [x1, y1], [x2, y2], ... ] 39 // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... } 40 41 var series = [], 42 options = { 43 // the color theme used for graphs 44 colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"], 45 legend: { 46 show: true, 47 noColumns: 1, // number of colums in legend table 48 labelFormatter: null, // fn: string -> string 49 labelBoxBorderColor: "#ccc", // border color for the little label boxes 50 container: null, // container (as jQuery object) to put legend in, null means default on top of graph 51 position: "ne", // position of default legend container within plot 52 margin: 5, // distance from grid edge to default legend container within plot 53 backgroundColor: null, // null means auto-detect 54 backgroundOpacity: 0.85 // set to 0 to avoid background 55 }, 56 xaxis: { 57 show: null, // null = auto-detect, true = always, false = never 58 position: "bottom", // or "top" 59 mode: null, // null or "time" 60 color: null, // base color, labels, ticks
61 tickColor: null, // possibly different color of ticks, e.g. "rgba(0,0,0,0.15)" 62 transform: null, // null or f: number -> number to transform axis 63 inverseTransform: null, // if transform is set, this should be the inverse function 64 min: null, // min. value to show, null means set automatically 65 max: null, // max. value to show, null means set automatically 66 autoscaleMargin: null, // margin in % to add if auto-setting min/max 67 ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks 68 tickFormatter: null, // fn: number -> string 69 labelWidth: null, // size of tick labels in pixels 70 labelHeight: null, 71 reserveSpace: null, // whether to reserve space even if axis isn't shown 72 tickLength: null, // size in pixels of ticks, or "full" for whole line 73 alignTicksWithAxis: null, // axis number or null for no sync 74 75 // mode specific options 76 tickDecimals: null, // no. of decimals, null means auto 77 tickSize: null, // number or [number, "unit"] 78 minTickSize: null, // number or [number, "unit"] 79 monthNames: null, // list of names of months 80 timeformat: null, // format string to use 81 twelveHourClock: false // 12 or 24 time in time mode 82 }, 83 yaxis: { 84 autoscaleMargin: 0.02, 85 position: "left" // or "right" 86 }, 87 xaxes: [], 88 yaxes: [], 89 series: { 90 points: { 91 show: false, 92 radius: 3, 93 lineWidth: 2, // in pixels 94 fill: true, 95 fillColor: "#ffffff", 96 symbol: "circle" // or callback 97 }, 98 lines: { 99 // we don't put in show: false so we can see 100 // whether lines were actively disabled 101 lineWidth: 2, // in pixels 102 fill: false, 103 fillColor: null, 104 steps: false 105 }, 106 bars: { 107 show: false, 108 lineWidth: 2, // in pixels 109 barWidth: 1, // in units of the x axis 110 fill: true, 111 fillColor: null, 112 align: "left", // or "center" 113 horizontal: false 114 }, 115 shadowSize: 3 116 }, 117 grid: { 118 show: true, 119 aboveData: false, 120 color: "#545454", // primary color used for outline and labels 121 backgroundColor: null, // null for transparent, else color 122 borderColor: null, // set if different from the grid color 123 tickColor: null, // color for the ticks, e.g. "rgba(0,0,0,0.15)" 124 labelMargin: 5, // in pixels 125 axisMargin: 8, // in pixels 126 borderWidth: 2, // in pixels 127 minBorderMargin: null, // in pixels, null means taken from points radius 128 markings: null, // array of ranges or fn: axes -> array of ranges 129 markingsColor: "#f4f4f4", 130 markingsLineWidth: 2, 131 // interactive stuff 132 clickable: false, 133 hoverable: false, 134 autoHighlight: true, // highlight in case mouse is near 135 mouseActiveRadius: 10 // how far the mouse can be away to activate an item 136 }, 137 hooks: {} 138 }, 139 canvas = null, // the canvas for the plot itself
vendor: 22,088 bytes, lines 140-725
140 overlay = null, // canvas for interactive stuff on top of plot 141 eventHolder = null, // jQuery object that events should be bound to 142 ctx = null, octx = null, 143 xaxes = [], yaxes = [], 144 plotOffset = { left: 0, right: 0, top: 0, bottom: 0}, 145 canvasWidth = 0, canvasHeight = 0, 146 plotWidth = 0, plotHeight = 0, 147 hooks = { 148 processOptions: [], 149 processRawData: [], 150 processDatapoints: [], 151 drawSeries: [], 152 draw: [], 153 bindEvents: [], 154 drawOverlay: [], 155 shutdown: [] 156 }, 157 plot = this; 158 159 // public functions 160 plot.setData = setData; 161 plot.setupGrid = setupGrid; 162 plot.draw = draw; 163 plot.getPlaceholder = function() { return placeholder; }; 164 plot.getCanvas = function() { return canvas; }; 165 plot.getPlotOffset = function() { return plotOffset; }; 166 plot.width = function () { return plotWidth; }; 167 plot.height = function () { return plotHeight; }; 168 plot.offset = function () { 169 var o = eventHolder.offset(); 170 o.left += plotOffset.left; 171 o.top += plotOffset.top; 172 return o; 173 }; 174 plot.getData = function () { return series; }; 175 plot.getAxes = function () { 176 var res = {}, i; 177 $.each(xaxes.concat(yaxes), function (_, axis) { 178 if (axis) 179 res[axis.direction + (axis.n != 1 ? axis.n : "") + "axis"] = axis; 180 }); 181 return res; 182 }; 183 plot.getXAxes = function () { return xaxes; }; 184 plot.getYAxes = function () { return yaxes; }; 185 plot.c2p = canvasToAxisCoords; 186 plot.p2c = axisToCanvasCoords; 187 plot.getOptions = function () { return options; }; 188 plot.highlight = highlight; 189 plot.unhighlight = unhighlight; 190 plot.triggerRedrawOverlay = triggerRedrawOverlay; 191 plot.pointOffset = function(point) { 192 return { 193 left: parseInt(xaxes[axisNumber(point, "x") - 1].p2c(+point.x) + plotOffset.left), 194 top: parseInt(yaxes[axisNumber(point, "y") - 1].p2c(+point.y) + plotOffset.top) 195 }; 196 }; 197 plot.shutdown = shutdown; 198 plot.resize = function () { 199 getCanvasDimensions(); 200 resizeCanvas(canvas); 201 resizeCanvas(overlay); 202 }; 203 204 // public attributes 205 plot.hooks = hooks; 206 207 // initialize 208 initPlugins(plot); 209 parseOptions(options_); 210 setupCanvases(); 211 setData(data_); 212 setupGrid(); 213 draw(); 214 bindEvents(); 215 216 217 function executeHooks(hook, args) { 218 args = [plot].concat(args); 219 for (var i = 0; i < hook.length; ++i) 220 hook[i].apply(this, args); 221 } 222 223 function initPlugins() { 224 for (var i = 0; i < plugins.length; ++i) { 225 var p = plugins[i]; 226 p.init(plot); 227 if (p.options) 228 $.extend(true, options, p.options); 229 } 230 } 231 232 function parseOptions(opts) { 233 var i; 234 235 $.extend(true, options, opts); 236 237 if (options.xaxis.color == null) 238 options.xaxis.color = options.grid.color; 239 if (options.yaxis.color == null) 240 options.yaxis.color = options.grid.color; 241 242 if (options.xaxis.tickColor == null) // backwards-compatibility 243 options.xaxis.tickColor = options.grid.tickColor; 244 if (options.yaxis.tickColor == null) // backwards-compatibility 245 options.yaxis.tickColor = options.grid.tickColor; 246 247 if (options.grid.borderColor == null) 248 options.grid.borderColor = options.grid.color; 249 if (options.grid.tickColor == null) 250 options.grid.tickColor = $.color.parse(options.grid.color).scale('a', 0.22).toString(); 251 252 // fill in defaults in axes, copy at least always the 253 // first as the rest of the code assumes it'll be there 254 for (i = 0; i < Math.max(1, options.xaxes.length); ++i) 255 options.xaxes[i] = $.extend(true, {}, options.xaxis, options.xaxes[i]); 256 for (i = 0; i < Math.max(1, options.yaxes.length); ++i) 257 options.yaxes[i] = $.extend(true, {}, options.yaxis, options.yaxes[i]); 258 259 // backwards compatibility, to be removed in future 260 if (options.xaxis.noTicks && options.xaxis.ticks == null) 261 options.xaxis.ticks = options.xaxis.noTicks; 262 if (options.yaxis.noTicks && options.yaxis.ticks == null) 263 options.yaxis.ticks = options.yaxis.noTicks; 264 if (options.x2axis) { 265 options.xaxes[1] = $.extend(true, {}, options.xaxis, options.x2axis); 266 options.xaxes[1].position = "top"; 267 } 268 if (options.y2axis) { 269 options.yaxes[1] = $.extend(true, {}, options.yaxis, options.y2axis); 270 options.yaxes[1].position = "right"; 271 } 272 if (options.grid.coloredAreas) 273 options.grid.markings = options.grid.coloredAreas; 274 if (options.grid.coloredAreasColor) 275 options.grid.markingsColor = options.grid.coloredAreasColor; 276 if (options.lines) 277 $.extend(true, options.series.lines, options.lines); 278 if (options.points) 279 $.extend(true, options.series.points, options.points); 280 if (options.bars) 281 $.extend(true, options.series.bars, options.bars); 282 if (options.shadowSize != null) 283 options.series.shadowSize = options.shadowSize; 284 285 // save options on axes for future reference 286 for (i = 0; i < options.xaxes.length; ++i) 287 getOrCreateAxis(xaxes, i + 1).options = options.xaxes[i]; 288 for (i = 0; i < options.yaxes.length; ++i) 289 getOrCreateAxis(yaxes, i + 1).options = options.yaxes[i]; 290 291 // add hooks from options 292 for (var n in hooks) 293 if (options.hooks[n] && options.hooks[n].length) 294 hooks[n] = hooks[n].concat(options.hooks[n]); 295 296 executeHooks(hooks.processOptions, [options]); 297 } 298 299 function setData(d) { 300 series = parseData(d); 301 fillInSeriesOptions(); 302 processData(); 303 } 304 305 function parseData(d) { 306 var res = []; 307 for (var i = 0; i < d.length; ++i) { 308 var s = $.extend(true, {}, options.series); 309 310 if (d[i].data != null) { 311 s.data = d[i].data; // move the data instead of deep-copy 312 delete d[i].data; 313 314 $.extend(true, s, d[i]); 315 316 d[i].data = s.data; 317 } 318 else 319 s.data = d[i]; 320 res.push(s); 321 } 322 323 return res; 324 } 325 326 function axisNumber(obj, coord) { 327 var a = obj[coord + "axis"]; 328 if (typeof a == "object") // if we got a real axis, extract number 329 a = a.n; 330 if (typeof a != "number") 331 a = 1; // default to first axis 332 return a; 333 } 334 335 function allAxes() { 336 // return flat array without annoying null entries 337 return $.grep(xaxes.concat(yaxes), function (a) { return a; }); 338 } 339 340 function canvasToAxisCoords(pos) { 341 // return an object with x/y corresponding to all used axes 342 var res = {}, i, axis; 343 for (i = 0; i < xaxes.length; ++i) { 344 axis = xaxes[i]; 345 if (axis && axis.used) 346 res["x" + axis.n] = axis.c2p(pos.left); 347 } 348 349 for (i = 0; i < yaxes.length; ++i) { 350 axis = yaxes[i]; 351 if (axis && axis.used) 352 res["y" + axis.n] = axis.c2p(pos.top); 353 } 354 355 if (res.x1 !== undefined) 356 res.x = res.x1; 357 if (res.y1 !== undefined) 358 res.y = res.y1; 359 360 return res; 361 } 362 363 function axisToCanvasCoords(pos) { 364 // get canvas coords from the first pair of x/y found in pos 365 var res = {}, i, axis, key; 366 367 for (i = 0; i < xaxes.length; ++i) { 368 axis = xaxes[i]; 369 if (axis && axis.used) { 370 key = "x" + axis.n; 371 if (pos[key] == null && axis.n == 1) 372 key = "x"; 373 374 if (pos[key] != null) { 375 res.left = axis.p2c(pos[key]); 376 break; 377 } 378 } 379 } 380 381 for (i = 0; i < yaxes.length; ++i) { 382 axis = yaxes[i]; 383 if (axis && axis.used) { 384 key = "y" + axis.n; 385 if (pos[key] == null && axis.n == 1) 386 key = "y"; 387 388 if (pos[key] != null) { 389 res.top = axis.p2c(pos[key]); 390 break; 391 } 392 } 393 } 394 395 return res; 396 } 397 398 function getOrCreateAxis(axes, number) { 399 if (!axes[number - 1]) 400 axes[number - 1] = { 401 n: number, // save the number for future reference 402 direction: axes == xaxes ? "x" : "y", 403 options: $.extend(true, {}, axes == xaxes ? options.xaxis : options.yaxis) 404 }; 405 406 return axes[number - 1]; 407 } 408 409 function fillInSeriesOptions() { 410 var i; 411 412 // collect what we already got of colors 413 var neededColors = series.length, 414 usedColors = [], 415 assignedColors = []; 416 for (i = 0; i < series.length; ++i) { 417 var sc = series[i].color; 418 if (sc != null) { 419 --neededColors; 420 if (typeof sc == "number") 421 assignedColors.push(sc); 422 else 423 usedColors.push($.color.parse(series[i].color)); 424 } 425 } 426 427 // we might need to generate more colors if higher indices 428 // are assigned 429 for (i = 0; i < assignedColors.length; ++i) { 430 neededColors = Math.max(neededColors, assignedColors[i] + 1); 431 } 432 433 // produce colors as needed 434 var colors = [], variation = 0; 435 i = 0; 436 while (colors.length < neededColors) { 437 var c; 438 if (options.colors.length == i) // check degenerate case 439 c = $.color.make(100, 100, 100); 440 else 441 c = $.color.parse(options.colors[i]); 442 443 // vary color if needed 444 var sign = variation % 2 == 1 ? -1 : 1; 445 c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2) 446 447 // FIXME: if we're getting to close to something else, 448 // we should probably skip this one 449 colors.push(c); 450 451 ++i; 452 if (i >= options.colors.length) { 453 i = 0; 454 ++variation; 455 } 456 } 457 458 // fill in the options 459 var colori = 0, s; 460 for (i = 0; i < series.length; ++i) { 461 s = series[i]; 462 463 // assign colors 464 if (s.color == null) { 465 s.color = colors[colori].toString(); 466 ++colori; 467 } 468 else if (typeof s.color == "number") 469 s.color = colors[s.color].toString(); 470 471 // turn on lines automatically in case nothing is set 472 if (s.lines.show == null) { 473 var v, show = true; 474 for (v in s) 475 if (s[v] && s[v].show) { 476 show = false; 477 break; 478 } 479 if (show) 480 s.lines.show = true; 481 } 482 483 // setup axes 484 s.xaxis = getOrCreateAxis(xaxes, axisNumber(s, "x")); 485 s.yaxis = getOrCreateAxis(yaxes, axisNumber(s, "y")); 486 } 487 } 488 489 function processData() { 490 var topSentry = Number.POSITIVE_INFINITY, 491 bottomSentry = Number.NEGATIVE_INFINITY, 492 fakeInfinity = Number.MAX_VALUE, 493 i, j, k, m, length, 494 s, points, ps, x, y, axis, val, f, p; 495 496 function updateAxis(axis, min, max) { 497 if (min < axis.datamin && min != -fakeInfinity) 498 axis.datamin = min; 499 if (max > axis.datamax && max != fakeInfinity) 500 axis.datamax = max; 501 } 502 503 $.each(allAxes(), function (_, axis) { 504 // init axis 505 axis.datamin = topSentry; 506 axis.datamax = bottomSentry; 507 axis.used = false; 508 }); 509 510 for (i = 0; i < series.length; ++i) { 511 s = series[i]; 512 s.datapoints = { points: [] }; 513 514 executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]); 515 } 516 517 // first pass: clean and copy data 518 for (i = 0; i < series.length; ++i) { 519 s = series[i]; 520 521 var data = s.data, format = s.datapoints.format; 522 523 if (!format) { 524 format = []; 525 // find out how to copy 526 format.push({ x: true, number: true, required: true }); 527 format.push({ y: true, number: true, required: true }); 528 529 if (s.bars.show || (s.lines.show && s.lines.fill)) { 530 format.push({ y: true, number: true, required: false, defaultValue: 0 }); 531 if (s.bars.horizontal) { 532 delete format[format.length - 1].y; 533 format[format.length - 1].x = true; 534 } 535 } 536 537 s.datapoints.format = format; 538 } 539 540 if (s.datapoints.pointsize != null) 541 continue; // already filled in 542 543 s.datapoints.pointsize = format.length; 544 545 ps = s.datapoints.pointsize; 546 points = s.datapoints.points; 547 548 insertSteps = s.lines.show && s.lines.steps; 549 s.xaxis.used = s.yaxis.used = true; 550 551 for (j = k = 0; j < data.length; ++j, k += ps) { 552 p = data[j]; 553 554 var nullify = p == null; 555 if (!nullify) { 556 for (m = 0; m < ps; ++m) { 557 val = p[m]; 558 f = format[m]; 559 560 if (f) { 561 if (f.number && val != null) { 562 val = +val; // convert to number 563 if (isNaN(val)) 564 val = null; 565 else if (val == Infinity) 566 val = fakeInfinity; 567 else if (val == -Infinity) 568 val = -fakeInfinity; 569 } 570 571 if (val == null) { 572 if (f.required) 573 nullify = true; 574 575 if (f.defaultValue != null) 576 val = f.defaultValue; 577 } 578 } 579 580 points[k + m] = val; 581 } 582 } 583 584 if (nullify) { 585 for (m = 0; m < ps; ++m) { 586 val = points[k + m]; 587 if (val != null) { 588 f = format[m]; 589 // extract min/max info 590 if (f.x) 591 updateAxis(s.xaxis, val, val); 592 if (f.y) 593 updateAxis(s.yaxis, val, val); 594 } 595 points[k + m] = null; 596 } 597 } 598 else { 599 // a little bit of line specific stuff that 600 // perhaps shouldn't be here, but lacking 601 // better means... 602 if (insertSteps && k > 0 603 && points[k - ps] != null 604 && points[k - ps] != points[k] 605 && points[k - ps + 1] != points[k + 1]) { 606 // copy the point to make room for a middle point 607 for (m = 0; m < ps; ++m) 608 points[k + ps + m] = points[k + m]; 609 610 // middle point has same y 611 points[k + 1] = points[k - ps + 1]; 612 613 // we've added a point, better reflect that 614 k += ps; 615 } 616 } 617 } 618 } 619 620 // give the hooks a chance to run 621 for (i = 0; i < series.length; ++i) { 622 s = series[i]; 623 624 executeHooks(hooks.processDatapoints, [ s, s.datapoints]); 625 } 626 627 // second pass: find datamax/datamin for auto-scaling 628 for (i = 0; i < series.length; ++i) { 629 s = series[i]; 630 points = s.datapoints.points, 631 ps = s.datapoints.pointsize; 632 633 var xmin = topSentry, ymin = topSentry, 634 xmax = bottomSentry, ymax = bottomSentry; 635 636 for (j = 0; j < points.length; j += ps) { 637 if (points[j] == null) 638 continue; 639 640 for (m = 0; m < ps; ++m) { 641 val = points[j + m]; 642 f = format[m]; 643 if (!f || val == fakeInfinity || val == -fakeInfinity) 644 continue; 645 646 if (f.x) { 647 if (val < xmin) 648 xmin = val; 649 if (val > xmax) 650 xmax = val; 651 } 652 if (f.y) { 653 if (val < ymin) 654 ymin = val; 655 if (val > ymax) 656 ymax = val; 657 } 658 } 659 } 660 661 if (s.bars.show) { 662 // make sure we got room for the bar on the dancing floor 663 var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2; 664 if (s.bars.horizontal) { 665 ymin += delta; 666 ymax += delta + s.bars.barWidth; 667 } 668 else { 669 xmin += delta; 670 xmax += delta + s.bars.barWidth; 671 } 672 } 673 674 updateAxis(s.xaxis, xmin, xmax); 675 updateAxis(s.yaxis, ymin, ymax); 676 } 677 678 $.each(allAxes(), function (_, axis) { 679 if (axis.datamin == topSentry) 680 axis.datamin = null; 681 if (axis.datamax == bottomSentry) 682 axis.datamax = null; 683 }); 684 } 685 686 function makeCanvas(skipPositioning, cls) { 687 var c = document.createElement('canvas'); 688 c.className = cls; 689 c.width = canvasWidth; 690 c.height = canvasHeight; 691 692 if (!skipPositioning) 693 $(c).css({ position: 'absolute', left: 0, top: 0 }); 694 695 $(c).appendTo(placeholder); 696 697 if (!c.getContext) // excanvas hack 698 c = window.G_vmlCanvasManager.initElement(c); 699 700 // used for resetting in case we get replotted 701 c.getContext("2d").save(); 702 703 return c; 704 } 705 706 function getCanvasDimensions() { 707 canvasWidth = placeholder.width(); 708 canvasHeight = placeholder.height(); 709 710 if (canvasWidth <= 0 || canvasHeight <= 0) 711 throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight; 712 } 713 714 function resizeCanvas(c) { 715 // resizing should reset the state (excanvas seems to be 716 // buggy though) 717 if (c.width != canvasWidth) 718 c.width = canvasWidth; 719 720 if (c.height != canvasHeight) 721 c.height = canvasHeight; 722 723 // so try to get back to the initial state (even if it's 724 // gone now, this should be safe according to the spec) 725 var cctx = c.getContext("2d");
726 cctx.restore(); 727 728 // and save again 729 cctx.save(); 730 } 731 732 function setupCanvases() { 733 var reused, 734 existingCanvas = placeholder.children("canvas.base"), 735 existingOverlay = placeholder.children("canvas.overlay"); 736 737 if (existingCanvas.length == 0 || existingOverlay == 0) { 738 // init everything 739 740 placeholder.html(""); // make sure placeholder is clear 741 742 placeholder.css({ padding: 0 }); // padding messes up the positioning 743 744 if (placeholder.css("position") == 'static') 745 placeholder.css("position", "relative"); // for positioning labels and overlay 746 747 getCanvasDimensions(); 748 749 canvas = makeCanvas(true, "base"); 750 overlay = makeCanvas(false, "overlay"); // overlay canvas for interactive features 751 752 reused = false; 753 } 754 else { 755 // reuse existing elements 756 757 canvas = existingCanvas.get(0); 758 overlay = existingOverlay.get(0); 759 760 reused = true; 761 } 762 763 ctx = canvas.getContext("2d"); 764 octx = overlay.getContext("2d"); 765 766 // we include the canvas in the event holder too, because IE 7 767 // sometimes has trouble with the stacking order 768 eventHolder = $([overlay, canvas]); 769 770 if (reused) { 771 // run shutdown in the old plot object 772 placeholder.data("plot").shutdown(); 773 774 // reset reused canvases 775 plot.resize(); 776 777 // make sure overlay pixels are cleared (canvas is cleared when we redraw) 778 octx.clearRect(0, 0, canvasWidth, canvasHeight); 779 780 // then whack any remaining obvious garbage left 781 eventHolder.unbind(); 782 placeholder.children().not([canvas, overlay]).remove(); 783 } 784 785 // save in case we get replotted 786 placeholder.data("plot", plot); 787 } 788 789 function bindEvents() { 790 // bind events 791 if (options.grid.hoverable) { 792 eventHolder.mousemove(onMouseMove); 793 eventHolder.mouseleave(onMouseLeave); 794 } 795 796 if (options.grid.clickable) 797 eventHolder.click(onClick); 798 799 executeHooks(hooks.bindEvents, [eventHolder]); 800 } 801 802 function shutdown() { 803 if (redrawTimeout) 804 clearTimeout(redrawTimeout); 805 806 eventHolder.unbind("mousemove", onMouseMove); 807 eventHolder.unbind("mouseleave", onMouseLeave); 808 eventHolder.unbind("click", onClick); 809 810 executeHooks(hooks.shutdown, [eventHolder]); 811 } 812 813 function setTransformationHelpers(axis) { 814 // set helper functions on the axis, assumes plot area 815 // has been computed already 816 817 function identity(x) { return x; } 818 819 var s, m, t = axis.options.transform || identity, 820 it = axis.options.inverseTransform; 821 822 // precompute how much the axis is scaling a point 823 // in canvas space 824 if (axis.direction == "x") { 825 s = axis.scale = plotWidth / Math.abs(t(axis.max) - t(axis.min)); 826 m = Math.min(t(axis.max), t(axis.min)); 827 } 828 else { 829 s = axis.scale = plotHeight / Math.abs(t(axis.max) - t(axis.min)); 830 s = -s; 831 m = Math.max(t(axis.max), t(axis.min)); 832 } 833 834 // data point to canvas coordinate 835 if (t == identity) // slight optimization 836 axis.p2c = function (p) { return (p - m) * s; }; 837 else 838 axis.p2c = function (p) { return (t(p) - m) * s; }; 839 // canvas coordinate to data point 840 if (!it) 841 axis.c2p = function (c) { return m + c / s; }; 842 else 843 axis.c2p = function (c) { return it(m + c / s); }; 844 } 845 846 function measureTickLabels(axis) { 847 var opts = axis.options, i, ticks = axis.ticks || [], labels = [], 848 l, w = opts.labelWidth, h = opts.labelHeight, dummyDiv; 849 850 function makeDummyDiv(labels, width) { 851 return $('<div style="position:absolute;top:-10000px;' + width + 'font-size:smaller">' + 852 '<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis">' 853 + labels.join("") + '</div></div>') 854 .appendTo(placeholder); 855 } 856 857 if (axis.direction == "x") { 858 // to avoid measuring the widths of the labels (it's slow), we 859 // construct fixed-size boxes and put the labels inside 860 // them, we don't need the exact figures and the 861 // fixed-size box content is easy to center 862 if (w == null) 863 w = Math.floor(canvasWidth / (ticks.length > 0 ? ticks.length : 1)); 864 865 // measure x label heights 866 if (h == null) { 867 labels = []; 868 for (i = 0; i < ticks.length; ++i) { 869 l = ticks[i].label; 870 if (l) 871 labels.push('<div class="tickLabel" style="float:left;width:' + w + 'px">' + l + '</div>'); 872 } 873 874 if (labels.length > 0) { 875 // stick them all in the same div and measure 876 // collective height 877 labels.push('<div style="clear:left"></div>'); 878 dummyDiv = makeDummyDiv(labels, "width:10000px;"); 879 h = dummyDiv.height(); 880 dummyDiv.remove(); 881 } 882 } 883 } 884 else if (w == null || h == null) { 885 // calculate y label dimensions 886 for (i = 0; i < ticks.length; ++i) { 887 l = ticks[i].label; 888 if (l) 889 labels.push('<div class="tickLabel">' + l + '</div>'); 890 } 891 892 if (labels.length > 0) { 893 dummyDiv = makeDummyDiv(labels, ""); 894 if (w == null) 895 w = dummyDiv.children().width(); 896 if (h == null) 897 h = dummyDiv.find("div.tickLabel").height(); 898 dummyDiv.remove(); 899 } 900 } 901 902 if (w == null) 903 w = 0; 904 if (h == null) 905 h = 0; 906 907 axis.labelWidth = w; 908 axis.labelHeight = h; 909 } 910 911 function allocateAxisBoxFirstPhase(axis) { 912 // find the bounding box of the axis by looking at label 913 // widths/heights and ticks, make room by diminishing the 914 // plotOffset 915 916 var lw = axis.labelWidth, 917 lh = axis.labelHeight, 918 pos = axis.options.position, 919 tickLength = axis.options.tickLength, 920 axismargin = options.grid.axisMargin, 921 padding = options.grid.labelMargin, 922 all = axis.direction == "x" ? xaxes : yaxes, 923 index; 924 925 // determine axis margin 926 var samePosition = $.grep(all, function (a) { 927 return a && a.options.position == pos && a.reserveSpace; 928 }); 929 if ($.inArray(axis, samePosition) == samePosition.length - 1) 930 axismargin = 0; // outermost 931 932 // determine tick length - if we're innermost, we can use "full" 933 if (tickLength == null) 934 tickLength = "full"; 935 936 var sameDirection = $.grep(all, function (a) { 937 return a && a.reserveSpace; 938 }); 939 940 var innermost = $.inArray(axis, sameDirection) == 0; 941 if (!innermost && tickLength == "full") 942 tickLength = 5; 943 944 if (!isNaN(+tickLength)) 945 padding += +tickLength; 946 947 // compute box 948 if (axis.direction == "x") { 949 lh += padding; 950 951 if (pos == "bottom") { 952 plotOffset.bottom += lh + axismargin; 953 axis.box = { top: canvasHeight - plotOffset.bottom, height: lh }; 954 } 955 else { 956 axis.box = { top: plotOffset.top + axismargin, height: lh }; 957 plotOffset.top += lh + axismargin; 958 } 959 } 960 else { 961 lw += padding; 962 963 if (pos == "left") { 964 axis.box = { left: plotOffset.left + axismargin, width: lw }; 965 plotOffset.left += lw + axismargin; 966 } 967 else { 968 plotOffset.right += lw + axismargin; 969 axis.box = { left: canvasWidth - plotOffset.right, width: lw }; 970 } 971 } 972 973 // save for future reference 974 axis.position = pos; 975 axis.tickLength = tickLength; 976 axis.box.padding = padding; 977 axis.innermost = innermost; 978 } 979 980 function allocateAxisBoxSecondPhase(axis) { 981 // set remaining bounding box coordinates 982 if (axis.direction == "x") { 983 axis.box.left = plotOffset.left; 984 axis.box.width = plotWidth; 985 } 986 else { 987 axis.box.top = plotOffset.top; 988 axis.box.height = plotHeight; 989 } 990 } 991
992 function setupGrid() { 993 var i, axes = allAxes(); 994 995 // first calculate the plot and axis box dimensions 996 997 $.each(axes, function (_, axis) { 998 axis.show = axis.options.show; 999 if (axis.show == null) 1000 axis.show = axis.used; // by default an axis is visible if it's got data 1001 1002 axis.reserveSpace = axis.show || axis.options.reserveSpace; 1003 1004 setRange(axis); 1005 }); 1006 1007 allocatedAxes = $.grep(axes, function (axis) { return axis.reserveSpace; }); 1008 1009 plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0; 1010 if (options.grid.show) { 1011 $.each(allocatedAxes, function (_, axis) { 1012 // make the ticks 1013 setupTickGeneration(axis); 1014 setTicks(axis); 1015 snapRangeToTicks(axis, axis.ticks); 1016 1017 // find labelWidth/Height for axis 1018 measureTickLabels(axis); 1019 }); 1020 1021 // with all dimensions in house, we can compute the 1022 // axis boxes, start from the outside (reverse order) 1023 for (i = allocatedAxes.length - 1; i >= 0; --i) 1024 allocateAxisBoxFirstPhase(allocatedAxes[i]); 1025 1026 // make sure we've got enough space for things that 1027 // might stick out 1028 var minMargin = options.grid.minBorderMargin; 1029 if (minMargin == null) { 1030 minMargin = 0; 1031 for (i = 0; i < series.length; ++i) 1032 minMargin = Math.max(minMargin, series[i].points.radius + series[i].points.lineWidth/2); 1033 } 1034 1035 for (var a in plotOffset) { 1036 plotOffset[a] += options.grid.borderWidth; 1037 plotOffset[a] = Math.max(minMargin, plotOffset[a]); 1038 } 1039 } 1040 1041 plotWidth = canvasWidth - plotOffset.left - plotOffset.right; 1042 plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top; 1043 1044 // now we got the proper plotWidth/Height, we can compute the scaling 1045 $.each(axes, function (_, axis) { 1046 setTransformationHelpers(axis); 1047 }); 1048 1049 if (options.grid.show) { 1050 $.each(allocatedAxes, function (_, axis) { 1051 allocateAxisBoxSecondPhase(axis); 1052 }); 1053 1054 insertAxisLabels(); 1055 } 1056 1057 insertLegend(); 1058 } 1059 1060 function setRange(axis) { 1061 var opts = axis.options, 1062 min = +(opts.min != null ? opts.min : axis.datamin), 1063 max = +(opts.max != null ? opts.max : axis.datamax), 1064 delta = max - min; 1065 1066 if (delta == 0.0) { 1067 // degenerate case 1068 var widen = max == 0 ? 1 : 0.01; 1069 1070 if (opts.min == null) 1071 min -= widen; 1072 // always widen max if we couldn't widen min to ensure we 1073 // don't fall into min == max which doesn't work 1074 if (opts.max == null || opts.min != null) 1075 max += widen; 1076 } 1077 else { 1078 // consider autoscaling 1079 var margin = opts.autoscaleMargin; 1080 if (margin != null) { 1081 if (opts.min == null) { 1082 min -= delta * margin; 1083 // make sure we don't go below zero if all values 1084 // are positive 1085 if (min < 0 && axis.datamin != null && axis.datamin >= 0) 1086 min = 0; 1087 } 1088 if (opts.max == null) { 1089 max += delta * margin; 1090 if (max > 0 && axis.datamax != null && axis.datamax <= 0) 1091 max = 0; 1092 } 1093 } 1094 } 1095 axis.min = min; 1096 axis.max = max; 1097 } 1098 1099 function setupTickGeneration(axis) { 1100 var opts = axis.options; 1101 1102 // estimate number of ticks 1103 var noTicks; 1104 if (typeof opts.ticks == "number" && opts.ticks > 0) 1105 noTicks = opts.ticks; 1106 else 1107 // heuristic based on the model a*sqrt(x) fitted to 1108 // some data points that seemed reasonable 1109 noTicks = 0.3 * Math.sqrt(axis.direction == "x" ? canvasWidth : canvasHeight); 1110 1111 var delta = (axis.max - axis.min) / noTicks, 1112 size, generator, unit, formatter, i, magn, norm; 1113 1114 if (opts.mode == "time") { 1115 // pretty handling of time 1116 1117 // map of app. size of time units in milliseconds 1118 var timeUnitSize = { 1119 "second": 1000, 1120 "minute": 60 * 1000, 1121 "hour": 60 * 60 * 1000, 1122 "day": 24 * 60 * 60 * 1000, 1123 "month": 30 * 24 * 60 * 60 * 1000, 1124 "year": 365.2425 * 24 * 60 * 60 * 1000 1125 }; 1126 1127 1128 // the allowed tick sizes, after 1 year we use 1129 // an integer algorithm 1130 var spec = [ 1131 [1, "second"], [2, "second"], [5, "second"], [10, "second"], 1132 [30, "second"], 1133 [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
1134 [30, "minute"], 1135 [1, "hour"], [2, "hour"], [4, "hour"], 1136 [8, "hour"], [12, "hour"], 1137 [1, "day"], [2, "day"], [3, "day"], 1138 [0.25, "month"], [0.5, "month"], [1, "month"], 1139 [2, "month"], [3, "month"], [6, "month"], 1140 [1, "year"] 1141 ]; 1142 1143 var minSize = 0; 1144 if (opts.minTickSize != null) { 1145 if (typeof opts.tickSize == "number") 1146 minSize = opts.tickSize; 1147 else 1148 minSize = opts.minTickSize[0] * timeUnitSize[opts.minTickSize[1]]; 1149 } 1150 1151 for (var i = 0; i < spec.length - 1; ++i) 1152 if (delta < (spec[i][0] * timeUnitSize[spec[i][1]] 1153 + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2 1154 && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize) 1155 break; 1156 size = spec[i][0]; 1157 unit = spec[i][1]; 1158 1159 // special-case the possibility of several years 1160 if (unit == "year") { 1161 magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10)); 1162 norm = (delta / timeUnitSize.year) / magn; 1163 if (norm < 1.5) 1164 size = 1; 1165 else if (norm < 3) 1166 size = 2; 1167 else if (norm < 7.5) 1168 size = 5; 1169 else 1170 size = 10; 1171 1172 size *= magn; 1173 } 1174 1175 axis.tickSize = opts.tickSize || [size, unit]; 1176 1177 generator = function(axis) { 1178 var ticks = [], 1179 tickSize = axis.tickSize[0], unit = axis.tickSize[1], 1180 d = new Date(axis.min); 1181 1182 var step = tickSize * timeUnitSize[unit]; 1183 1184 if (unit == "second") 1185 d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize)); 1186 if (unit == "minute") 1187 d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize)); 1188 if (unit == "hour") 1189 d.setUTCHours(floorInBase(d.getUTCHours(), tickSize)); 1190 if (unit == "month") 1191 d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize)); 1192 if (unit == "year") 1193 d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize)); 1194 1195 // reset smaller components 1196 d.setUTCMilliseconds(0); 1197 if (step >= timeUnitSize.minute) 1198 d.setUTCSeconds(0); 1199 if (step >= timeUnitSize.hour) 1200 d.setUTCMinutes(0); 1201 if (step >= timeUnitSize.day) 1202 d.setUTCHours(0); 1203 if (step >= timeUnitSize.day * 4) 1204 d.setUTCDate(1); 1205 if (step >= timeUnitSize.year) 1206 d.setUTCMonth(0); 1207 1208 1209 var carry = 0, v = Number.NaN, prev; 1210 do { 1211 prev = v; 1212 v = d.getTime(); 1213 ticks.push(v); 1214 if (unit == "month") { 1215 if (tickSize < 1) { 1216 // a bit complicated - we'll divide the month 1217 // up but we need to take care of fractions 1218 // so we don't end up in the middle of a day 1219 d.setUTCDate(1); 1220 var start = d.getTime(); 1221 d.setUTCMonth(d.getUTCMonth() + 1); 1222 var end = d.getTime(); 1223 d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize); 1224 carry = d.getUTCHours(); 1225 d.setUTCHours(0); 1226 } 1227 else 1228 d.setUTCMonth(d.getUTCMonth() + tickSize); 1229 } 1230 else if (unit == "year") { 1231 d.setUTCFullYear(d.getUTCFullYear() + tickSize); 1232 } 1233 else 1234 d.setTime(v + step); 1235 } while (v < axis.max && v != prev); 1236 1237 return ticks; 1238 }; 1239 1240 formatter = function (v, axis) { 1241 var d = new Date(v); 1242 1243 // first check global format 1244 if (opts.timeformat != null) 1245 return $.plot.formatDate(d, opts.timeformat, opts.monthNames); 1246 1247 var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]]; 1248 var span = axis.max - axis.min; 1249 var suffix = (opts.twelveHourClock) ? " %p" : ""; 1250 1251 if (t < timeUnitSize.minute) 1252 fmt = "%h:%M:%S" + suffix; 1253 else if (t < timeUnitSize.day) {
1254 if (span < 2 * timeUnitSize.day) 1255 fmt = "%h:%M" + suffix; 1256 else 1257 fmt = "%b %d %h:%M" + suffix; 1258 } 1259 else if (t < timeUnitSize.month) 1260 fmt = "%b %d"; 1261 else if (t < timeUnitSize.year) { 1262 if (span < timeUnitSize.year) 1263 fmt = "%b"; 1264 else 1265 fmt = "%b %y"; 1266 } 1267 else 1268 fmt = "%y"; 1269 1270 return $.plot.formatDate(d, fmt, opts.monthNames); 1271 }; 1272 } 1273 else { 1274 // pretty rounding of base-10 numbers 1275 var maxDec = opts.tickDecimals; 1276 var dec = -Math.floor(Math.log(delta) / Math.LN10); 1277 if (maxDec != null && dec > maxDec) 1278 dec = maxDec; 1279 1280 magn = Math.pow(10, -dec); 1281 norm = delta / magn; // norm is between 1.0 and 10.0 1282 1283 if (norm < 1.5) 1284 size = 1; 1285 else if (norm < 3) { 1286 size = 2; 1287 // special case for 2.5, requires an extra decimal 1288 if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) { 1289 size = 2.5; 1290 ++dec; 1291 } 1292 } 1293 else if (norm < 7.5) 1294 size = 5; 1295 else 1296 size = 10; 1297 1298 size *= magn; 1299 1300 if (opts.minTickSize != null && size < opts.minTickSize) 1301 size = opts.minTickSize; 1302 1303 axis.tickDecimals = Math.max(0, maxDec != null ? maxDec : dec); 1304 axis.tickSize = opts.tickSize || size; 1305 1306 generator = function (axis) { 1307 var ticks = []; 1308 1309 // spew out all possible ticks 1310 var start = floorInBase(axis.min, axis.tickSize), 1311 i = 0, v = Number.NaN, prev; 1312 do { 1313 prev = v; 1314 v = start + i * axis.tickSize; 1315 ticks.push(v); 1316 ++i; 1317 } while (v < axis.max && v != prev); 1318 return ticks; 1319 }; 1320 1321 formatter = function (v, axis) { 1322 return v.toFixed(axis.tickDecimals); 1323 }; 1324 } 1325 1326 if (opts.alignTicksWithAxis != null) { 1327 var otherAxis = (axis.direction == "x" ? xaxes : yaxes)[opts.alignTicksWithAxis - 1]; 1328 if (otherAxis && otherAxis.used && otherAxis != axis) { 1329 // consider snapping min/max to outermost nice ticks 1330 var niceTicks = generator(axis); 1331 if (niceTicks.length > 0) { 1332 if (opts.min == null) 1333 axis.min = Math.min(axis.min, niceTicks[0]); 1334 if (opts.max == null && niceTicks.length > 1) 1335 axis.max = Math.max(axis.max, niceTicks[niceTicks.length - 1]); 1336 } 1337 1338 generator = function (axis) { 1339 // copy ticks, scaled to this axis 1340 var ticks = [], v, i; 1341 for (i = 0; i < otherAxis.ticks.length; ++i) { 1342 v = (otherAxis.ticks[i].v - otherAxis.min) / (otherAxis.max - otherAxis.min); 1343 v = axis.min + v * (axis.max - axis.min); 1344 ticks.push(v); 1345 } 1346 return ticks; 1347 }; 1348 1349 // we might need an extra decimal since forced 1350 // ticks don't necessarily fit naturally 1351 if (axis.mode != "time" && opts.tickDecimals == null) { 1352 var extraDec = Math.max(0, -Math.floor(Math.log(delta) / Math.LN10) + 1), 1353 ts = generator(axis); 1354 1355 // only proceed if the tick interval rounded 1356 // with an extra decimal doesn't give us a 1357 // zero at end 1358 if (!(ts.length > 1 && /\..*0$/.test((ts[1] - ts[0]).toFixed(extraDec)))) 1359 axis.tickDecimals = extraDec; 1360 } 1361 } 1362 } 1363 1364 axis.tickGenerator = generator; 1365 if ($.isFunction(opts.tickFormatter)) 1366 axis.tickFormatter = function (v, axis) { return "" + opts.tickFormatter(v, axis); }; 1367 else 1368 axis.tickFormatter = formatter; 1369 } 1370 1371 function setTicks(axis) { 1372 var oticks = axis.options.ticks, ticks = []; 1373 if (oticks == null || (typeof oticks == "number" && oticks > 0)) 1374 ticks = axis.tickGenerator(axis); 1375 else if (oticks) { 1376 if ($.isFunction(oticks)) 1377 // generate the ticks 1378 ticks = oticks({ min: axis.min, max: axis.max }); 1379 else 1380 ticks = oticks; 1381 } 1382 1383 // clean up/labelify the supplied ticks, copy them over 1384 var i, v; 1385 axis.ticks = []; 1386 for (i = 0; i < ticks.length; ++i) { 1387 var label = null; 1388 var t = ticks[i]; 1389 if (typeof t == "object") { 1390 v = +t[0]; 1391 if (t.length > 1) 1392 label = t[1]; 1393 } 1394 else 1395 v = +t; 1396 if (label == null) 1397 label = axis.tickFormatter(v, axis); 1398 if (!isNaN(v)) 1399 axis.ticks.push({ v: v, label: label }); 1400 } 1401 } 1402 1403 function snapRangeToTicks(axis, ticks) { 1404 if (axis.options.autoscaleMargin && ticks.length > 0) { 1405 // snap to ticks 1406 if (axis.options.min == null) 1407 axis.min = Math.min(axis.min, ticks[0].v); 1408 if (axis.options.max == null && ticks.length > 1) 1409 axis.max = Math.max(axis.max, ticks[ticks.length - 1].v); 1410 } 1411 } 1412 1413 function draw() { 1414 ctx.clearRect(0, 0, canvasWidth, canvasHeight); 1415 1416 var grid = options.grid; 1417 1418 // draw background, if any 1419 if (grid.show && grid.backgroundColor)
1420 drawBackground(); 1421 1422 if (grid.show && !grid.aboveData) 1423 drawGrid(); 1424 1425 for (var i = 0; i < series.length; ++i) { 1426 executeHooks(hooks.drawSeries, [ctx, series[i]]); 1427 drawSeries(series[i]); 1428 } 1429 1430 executeHooks(hooks.draw, [ctx]); 1431 1432 if (grid.show && grid.aboveData) 1433 drawGrid(); 1434 } 1435 1436 function extractRange(ranges, coord) { 1437 var axis, from, to, key, axes = allAxes(); 1438 1439 for (i = 0; i < axes.length; ++i) { 1440 axis = axes[i]; 1441 if (axis.direction == coord) { 1442 key = coord + axis.n + "axis"; 1443 if (!ranges[key] && axis.n == 1) 1444 key = coord + "axis"; // support x1axis as xaxis 1445 if (ranges[key]) { 1446 from = ranges[key].from; 1447 to = ranges[key].to; 1448 break; 1449 } 1450 } 1451 } 1452 1453 // backwards-compat stuff - to be removed in future 1454 if (!ranges[key]) { 1455 axis = coord == "x" ? xaxes[0] : yaxes[0]; 1456 from = ranges[coord + "1"]; 1457 to = ranges[coord + "2"]; 1458 } 1459 1460 // auto-reverse as an added bonus 1461 if (from != null && to != null && from > to) { 1462 var tmp = from; 1463 from = to; 1464 to = tmp; 1465 } 1466 1467 return { from: from, to: to, axis: axis }; 1468 } 1469 1470 function drawBackground() { 1471 ctx.save(); 1472 ctx.translate(plotOffset.left, plotOffset.top); 1473 1474 ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)"); 1475 ctx.fillRect(0, 0, plotWidth, plotHeight); 1476 ctx.restore(); 1477 } 1478 1479 function drawGrid() { 1480 var i; 1481 1482 ctx.save(); 1483 ctx.translate(plotOffset.left, plotOffset.top); 1484 1485 // draw markings 1486 var markings = options.grid.markings; 1487 if (markings) { 1488 if ($.isFunction(markings)) { 1489 var axes = plot.getAxes(); 1490 // xmin etc. is backwards compatibility, to be 1491 // removed in the future 1492 axes.xmin = axes.xaxis.min; 1493 axes.xmax = axes.xaxis.max; 1494 axes.ymin = axes.yaxis.min; 1495 axes.ymax = axes.yaxis.max; 1496 1497 markings = markings(axes); 1498 } 1499 1500 for (i = 0; i < markings.length; ++i) { 1501 var m = markings[i], 1502 xrange = extractRange(m, "x"), 1503 yrange = extractRange(m, "y"); 1504 1505 // fill in missing 1506 if (xrange.from == null) 1507 xrange.from = xrange.axis.min; 1508 if (xrange.to == null) 1509 xrange.to = xrange.axis.max; 1510 if (yrange.from == null) 1511 yrange.from = yrange.axis.min; 1512 if (yrange.to == null) 1513 yrange.to = yrange.axis.max; 1514 1515 // clip 1516 if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max || 1517 yrange.to < yrange.axis.min || yrange.from > yrange.axis.max) 1518 continue; 1519 1520 xrange.from = Math.max(xrange.from, xrange.axis.min); 1521 xrange.to = Math.min(xrange.to, xrange.axis.max); 1522 yrange.from = Math.max(yrange.from, yrange.axis.min); 1523 yrange.to = Math.min(yrange.to, yrange.axis.max); 1524 1525 if (xrange.from == xrange.to && yrange.from == yrange.to) 1526 continue; 1527 1528 // then draw 1529 xrange.from = xrange.axis.p2c(xrange.from); 1530 xrange.to = xrange.axis.p2c(xrange.to); 1531 yrange.from = yrange.axis.p2c(yrange.from); 1532 yrange.to = yrange.axis.p2c(yrange.to); 1533 1534 if (xrange.from == xrange.to || yrange.from == yrange.to) { 1535 // draw line 1536 ctx.beginPath(); 1537 ctx.strokeStyle = m.color || options.grid.markingsColor; 1538 ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth; 1539 ctx.moveTo(xrange.from, yrange.from); 1540 ctx.lineTo(xrange.to, yrange.to); 1541 ctx.stroke(); 1542 } 1543 else { 1544 // fill area 1545 ctx.fillStyle = m.color || options.grid.markingsColor; 1546 ctx.fillRect(xrange.from, yrange.to, 1547 xrange.to - xrange.from, 1548 yrange.from - yrange.to); 1549 } 1550 } 1551 } 1552 1553 // draw the ticks 1554 var axes = allAxes(), bw = options.grid.borderWidth; 1555 1556 for (var j = 0; j < axes.length; ++j) { 1557 var axis = axes[j], box = axis.box, 1558 t = axis.tickLength, x, y, xoff, yoff; 1559 if (!axis.show || axis.ticks.length == 0) 1560 continue 1561 1562 ctx.strokeStyle = axis.options.tickColor || $.color.parse(axis.options.color).scale('a', 0.22).toString(); 1563 ctx.lineWidth = 1; 1564 1565 // find the edges 1566 if (axis.direction == "x") { 1567 x = 0; 1568 if (t == "full") 1569 y = (axis.position == "top" ? 0 : plotHeight); 1570 else 1571 y = box.top - plotOffset.top + (axis.position == "top" ? box.height : 0); 1572 } 1573 else { 1574 y = 0; 1575 if (t == "full") 1576 x = (axis.position == "left" ? 0 : plotWidth); 1577 else 1578 x = box.left - plotOffset.left + (axis.position == "left" ? box.width : 0); 1579 } 1580 1581 // draw tick bar 1582 if (!axis.innermost) { 1583 ctx.beginPath(); 1584 xoff = yoff = 0; 1585 if (axis.direction == "x") 1586 xoff = plotWidth; 1587 else 1588 yoff = plotHeight; 1589 1590 if (ctx.lineWidth == 1) { 1591 x = Math.floor(x) + 0.5; 1592 y = Math.floor(y) + 0.5; 1593 } 1594 1595 ctx.moveTo(x, y); 1596 ctx.lineTo(x + xoff, y + yoff); 1597 ctx.stroke(); 1598 } 1599 1600 // draw ticks 1601 ctx.beginPath(); 1602 for (i = 0; i < axis.ticks.length; ++i) { 1603 var v = axis.ticks[i].v; 1604 1605 xoff = yoff = 0; 1606 1607 if (v < axis.min || v > axis.max 1608 // skip those lying on the axes if we got a border 1609 || (t == "full" && bw > 0 1610 && (v == axis.min || v == axis.max))) 1611 continue; 1612 1613 if (axis.direction == "x") { 1614 x = axis.p2c(v); 1615 yoff = t == "full" ? -plotHeight : t; 1616 1617 if (axis.position == "top") 1618 yoff = -yoff; 1619 } 1620 else { 1621 y = axis.p2c(v); 1622 xoff = t == "full" ? -plotWidth : t; 1623 1624 if (axis.position == "left") 1625 xoff = -xoff; 1626 } 1627 1628 if (ctx.lineWidth == 1) { 1629 if (axis.direction == "x") 1630 x = Math.floor(x) + 0.5; 1631 else 1632 y = Math.floor(y) + 0.5; 1633 } 1634 1635 ctx.moveTo(x, y); 1636 ctx.lineTo(x + xoff, y + yoff); 1637 } 1638 1639 ctx.stroke(); 1640 } 1641 1642 1643 // draw border 1644 if (bw) { 1645 ctx.lineWidth = bw; 1646 ctx.strokeStyle = options.grid.borderColor; 1647 ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw); 1648 } 1649
1650 ctx.restore(); 1651 } 1652 1653 function insertAxisLabels() { 1654 placeholder.find(".tickLabels").remove(); 1655 1656 var html = ['<div class="tickLabels" style="font-size:smaller">']; 1657 1658 var axes = allAxes(); 1659 for (var j = 0; j < axes.length; ++j) { 1660 var axis = axes[j], box = axis.box; 1661 if (!axis.show) 1662 continue; 1663 //debug: html.push('<div style="position:absolute;opacity:0.10;background-color:red;left:' + box.left + 'px;top:' + box.top + 'px;width:' + box.width + 'px;height:' + box.height + 'px"></div>') 1664 html.push('<div class="' + axis.direction + 'Axis ' + axis.direction + axis.n + 'Axis" style="color:' + axis.options.color + '">'); 1665 for (var i = 0; i < axis.ticks.length; ++i) { 1666 var tick = axis.ticks[i]; 1667 if (!tick.label || tick.v < axis.min || tick.v > axis.max) 1668 continue; 1669 1670 var pos = {}, align; 1671 1672 if (axis.direction == "x") { 1673 align = "center"; 1674 pos.left = Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2); 1675 if (axis.position == "bottom") 1676 pos.top = box.top + box.padding; 1677 else 1678 pos.bottom = canvasHeight - (box.top + box.height - box.padding); 1679 } 1680 else { 1681 pos.top = Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2); 1682 if (axis.position == "left") { 1683 pos.right = canvasWidth - (box.left + box.width - box.padding) 1684 align = "right"; 1685 } 1686 else { 1687 pos.left = box.left + box.padding; 1688 align = "left"; 1689 } 1690 } 1691 1692 pos.width = axis.labelWidth; 1693 1694 var style = ["position:absolute", "text-align:" + align ]; 1695 for (var a in pos) 1696 style.push(a + ":" + pos[a] + "px") 1697 1698 html.push('<div class="tickLabel" style="' + style.join(';') + '">' + tick.label + '</div>'); 1699 } 1700 html.push('</div>'); 1701 } 1702 1703 html.push('</div>'); 1704 1705 placeholder.append(html.join("")); 1706 } 1707 1708 function drawSeries(series) { 1709 if (series.lines.show) 1710 drawSeriesLines(series); 1711 if (series.bars.show) 1712 drawSeriesBars(series); 1713 if (series.points.show) 1714 drawSeriesPoints(series); 1715 } 1716 1717 function drawSeriesLines(series) { 1718 function plotLine(datapoints, xoffset, yoffset, axisx, axisy) { 1719 var points = datapoints.points, 1720 ps = datapoints.pointsize, 1721 prevx = null, prevy = null; 1722 1723 ctx.beginPath(); 1724 for (var i = ps; i < points.length; i += ps) { 1725 var x1 = points[i - ps], y1 = points[i - ps + 1], 1726 x2 = points[i], y2 = points[i + 1]; 1727 1728 if (x1 == null || x2 == null) 1729 continue; 1730 1731 // clip with ymin 1732 if (y1 <= y2 && y1 < axisy.min) { 1733 if (y2 < axisy.min) 1734 continue; // line segment is outside 1735 // compute new intersection point 1736 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; 1737 y1 = axisy.min; 1738 } 1739 else if (y2 <= y1 && y2 < axisy.min) { 1740 if (y1 < axisy.min) 1741 continue; 1742 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; 1743 y2 = axisy.min; 1744 } 1745 1746 // clip with ymax 1747 if (y1 >= y2 && y1 > axisy.max) { 1748 if (y2 > axisy.max) 1749 continue; 1750 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; 1751 y1 = axisy.max; 1752 } 1753 else if (y2 >= y1 && y2 > axisy.max) { 1754 if (y1 > axisy.max) 1755 continue; 1756 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; 1757 y2 = axisy.max; 1758 } 1759 1760 // clip with xmin 1761 if (x1 <= x2 && x1 < axisx.min) { 1762 if (x2 < axisx.min) 1763 continue; 1764 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; 1765 x1 = axisx.min; 1766 } 1767 else if (x2 <= x1 && x2 < axisx.min) { 1768 if (x1 < axisx.min) 1769 continue; 1770 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; 1771 x2 = axisx.min; 1772 } 1773 1774 // clip with xmax 1775 if (x1 >= x2 && x1 > axisx.max) { 1776 if (x2 > axisx.max) 1777 continue; 1778 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; 1779 x1 = axisx.max; 1780 } 1781 else if (x2 >= x1 && x2 > axisx.max) { 1782 if (x1 > axisx.max) 1783 continue; 1784 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; 1785 x2 = axisx.max; 1786 } 1787 1788 if (x1 != prevx || y1 != prevy) 1789 ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset); 1790 1791 prevx = x2; 1792 prevy = y2; 1793 ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset); 1794 } 1795 ctx.stroke(); 1796 } 1797 1798 function plotLineArea(datapoints, axisx, axisy) { 1799 var points = datapoints.points, 1800 ps = datapoints.pointsize, 1801 bottom = Math.min(Math.max(0, axisy.min), axisy.max), 1802 i = 0, top, areaOpen = false, 1803 ypos = 1, segmentStart = 0, segmentEnd = 0; 1804 1805 // we process each segment in two turns, first forward 1806 // direction to sketch out top, then once we hit the 1807 // end we go backwards to sketch the bottom 1808 while (true) { 1809 if (ps > 0 && i > points.length + ps) 1810 break; 1811 1812 i += ps; // ps is negative if going backwards 1813 1814 var x1 = points[i - ps], 1815 y1 = points[i - ps + ypos], 1816 x2 = points[i], y2 = points[i + ypos]; 1817 1818 if (areaOpen) { 1819 if (ps > 0 && x1 != null && x2 == null) { 1820 // at turning point 1821 segmentEnd = i; 1822 ps = -ps; 1823 ypos = 2; 1824 continue; 1825 } 1826 1827 if (ps < 0 && i == segmentStart + ps) { 1828 // done with the reverse sweep 1829 ctx.fill(); 1830 areaOpen = false;
vendor: 10,284 bytes, lines 1831-2080
1831 ps = -ps; 1832 ypos = 1; 1833 i = segmentStart = segmentEnd + ps; 1834 continue; 1835 } 1836 } 1837 1838 if (x1 == null || x2 == null) 1839 continue; 1840 1841 // clip x values 1842 1843 // clip with xmin 1844 if (x1 <= x2 && x1 < axisx.min) { 1845 if (x2 < axisx.min) 1846 continue; 1847 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; 1848 x1 = axisx.min; 1849 } 1850 else if (x2 <= x1 && x2 < axisx.min) { 1851 if (x1 < axisx.min) 1852 continue; 1853 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1; 1854 x2 = axisx.min; 1855 } 1856 1857 // clip with xmax 1858 if (x1 >= x2 && x1 > axisx.max) { 1859 if (x2 > axisx.max) 1860 continue; 1861 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; 1862 x1 = axisx.max; 1863 } 1864 else if (x2 >= x1 && x2 > axisx.max) { 1865 if (x1 > axisx.max) 1866 continue; 1867 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1; 1868 x2 = axisx.max; 1869 } 1870 1871 if (!areaOpen) { 1872 // open area 1873 ctx.beginPath(); 1874 ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom)); 1875 areaOpen = true; 1876 } 1877 1878 // now first check the case where both is outside 1879 if (y1 >= axisy.max && y2 >= axisy.max) { 1880 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max)); 1881 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max)); 1882 continue; 1883 } 1884 else if (y1 <= axisy.min && y2 <= axisy.min) { 1885 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min)); 1886 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min)); 1887 continue; 1888 } 1889 1890 // else it's a bit more complicated, there might 1891 // be a flat maxed out rectangle first, then a 1892 // triangular cutout or reverse; to find these 1893 // keep track of the current x values 1894 var x1old = x1, x2old = x2; 1895 1896 // clip the y values, without shortcutting, we 1897 // go through all cases in turn 1898 1899 // clip with ymin 1900 if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) { 1901 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; 1902 y1 = axisy.min; 1903 } 1904 else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) { 1905 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1; 1906 y2 = axisy.min; 1907 } 1908 1909 // clip with ymax 1910 if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) { 1911 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; 1912 y1 = axisy.max; 1913 } 1914 else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) { 1915 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1; 1916 y2 = axisy.max; 1917 } 1918 1919 // if the x value was changed we got a rectangle 1920 // to fill 1921 if (x1 != x1old) { 1922 ctx.lineTo(axisx.p2c(x1old), axisy.p2c(y1)); 1923 // it goes to (x1, y1), but we fill that below 1924 } 1925 1926 // fill triangular section, this sometimes result 1927 // in redundant points if (x1, y1) hasn't changed 1928 // from previous line to, but we just ignore that 1929 ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1)); 1930 ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); 1931 1932 // fill the other rectangle if it's there 1933 if (x2 != x2old) { 1934 ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2)); 1935 ctx.lineTo(axisx.p2c(x2old), axisy.p2c(y2)); 1936 } 1937 } 1938 } 1939 1940 ctx.save(); 1941 ctx.translate(plotOffset.left, plotOffset.top); 1942 ctx.lineJoin = "round"; 1943 1944 var lw = series.lines.lineWidth, 1945 sw = series.shadowSize; 1946 // FIXME: consider another form of shadow when filling is turned on 1947 if (lw > 0 && sw > 0) { 1948 // draw shadow as a thick and thin line with transparency 1949 ctx.lineWidth = sw; 1950 ctx.strokeStyle = "rgba(0,0,0,0.1)"; 1951 // position shadow at angle from the mid of line 1952 var angle = Math.PI/18; 1953 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis); 1954 ctx.lineWidth = sw/2; 1955 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis); 1956 } 1957 1958 ctx.lineWidth = lw; 1959 ctx.strokeStyle = series.color; 1960 var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight); 1961 if (fillStyle) { 1962 ctx.fillStyle = fillStyle; 1963 plotLineArea(series.datapoints, series.xaxis, series.yaxis); 1964 } 1965 1966 if (lw > 0) 1967 plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis); 1968 ctx.restore(); 1969 } 1970 1971 function drawSeriesPoints(series) { 1972 function plotPoints(datapoints, radius, fillStyle, offset, shadow, axisx, axisy, symbol) { 1973 var points = datapoints.points, ps = datapoints.pointsize; 1974 1975 for (var i = 0; i < points.length; i += ps) { 1976 var x = points[i], y = points[i + 1]; 1977 if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) 1978 continue; 1979 1980 ctx.beginPath(); 1981 x = axisx.p2c(x); 1982 y = axisy.p2c(y) + offset; 1983 if (symbol == "circle") 1984 ctx.arc(x, y, radius, 0, shadow ? Math.PI : Math.PI * 2, false); 1985 else 1986 symbol(ctx, x, y, radius, shadow); 1987 ctx.closePath(); 1988 1989 if (fillStyle) { 1990 ctx.fillStyle = fillStyle; 1991 ctx.fill(); 1992 } 1993 ctx.stroke(); 1994 } 1995 } 1996 1997 ctx.save(); 1998 ctx.translate(plotOffset.left, plotOffset.top); 1999 2000 var lw = series.points.lineWidth, 2001 sw = series.shadowSize, 2002 radius = series.points.radius, 2003 symbol = series.points.symbol; 2004 if (lw > 0 && sw > 0) { 2005 // draw shadow in two steps 2006 var w = sw / 2; 2007 ctx.lineWidth = w; 2008 ctx.strokeStyle = "rgba(0,0,0,0.1)"; 2009 plotPoints(series.datapoints, radius, null, w + w/2, true, 2010 series.xaxis, series.yaxis, symbol); 2011 2012 ctx.strokeStyle = "rgba(0,0,0,0.2)"; 2013 plotPoints(series.datapoints, radius, null, w/2, true, 2014 series.xaxis, series.yaxis, symbol); 2015 } 2016 2017 ctx.lineWidth = lw; 2018 ctx.strokeStyle = series.color; 2019 plotPoints(series.datapoints, radius, 2020 getFillStyle(series.points, series.color), 0, false, 2021 series.xaxis, series.yaxis, symbol); 2022 ctx.restore(); 2023 } 2024 2025 function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal, lineWidth) { 2026 var left, right, bottom, top, 2027 drawLeft, drawRight, drawTop, drawBottom, 2028 tmp; 2029 2030 // in horizontal mode, we start the bar from the left 2031 // instead of from the bottom so it appears to be 2032 // horizontal rather than vertical 2033 if (horizontal) { 2034 drawBottom = drawRight = drawTop = true; 2035 drawLeft = false; 2036 left = b; 2037 right = x; 2038 top = y + barLeft; 2039 bottom = y + barRight; 2040 2041 // account for negative bars 2042 if (right < left) { 2043 tmp = right; 2044 right = left; 2045 left = tmp; 2046 drawLeft = true; 2047 drawRight = false; 2048 } 2049 } 2050 else { 2051 drawLeft = drawRight = drawTop = true; 2052 drawBottom = false; 2053 left = x + barLeft; 2054 right = x + barRight; 2055 bottom = b; 2056 top = y; 2057 2058 // account for negative bars 2059 if (top < bottom) { 2060 tmp = top; 2061 top = bottom; 2062 bottom = tmp; 2063 drawBottom = true; 2064 drawTop = false; 2065 } 2066 } 2067 2068 // clip 2069 if (right < axisx.min || left > axisx.max || 2070 top < axisy.min || bottom > axisy.max) 2071 return; 2072 2073 if (left < axisx.min) { 2074 left = axisx.min; 2075 drawLeft = false; 2076 } 2077 2078 if (right > axisx.max) { 2079 right = axisx.max; 2080 drawRight = false;
2081 } 2082 2083 if (bottom < axisy.min) { 2084 bottom = axisy.min; 2085 drawBottom = false; 2086 } 2087 2088 if (top > axisy.max) { 2089 top = axisy.max; 2090 drawTop = false; 2091 } 2092 2093 left = axisx.p2c(left); 2094 bottom = axisy.p2c(bottom); 2095 right = axisx.p2c(right); 2096 top = axisy.p2c(top); 2097 2098 // fill the bar 2099 if (fillStyleCallback) { 2100 c.beginPath(); 2101 c.moveTo(left, bottom); 2102 c.lineTo(left, top); 2103 c.lineTo(right, top); 2104 c.lineTo(right, bottom); 2105 c.fillStyle = fillStyleCallback(bottom, top); 2106 c.fill(); 2107 } 2108 2109 // draw outline 2110 if (lineWidth > 0 && (drawLeft || drawRight || drawTop || drawBottom)) { 2111 c.beginPath(); 2112 2113 // FIXME: inline moveTo is buggy with excanvas 2114 c.moveTo(left, bottom + offset); 2115 if (drawLeft) 2116 c.lineTo(left, top + offset); 2117 else 2118 c.moveTo(left, top + offset); 2119 if (drawTop) 2120 c.lineTo(right, top + offset); 2121 else 2122 c.moveTo(right, top + offset); 2123 if (drawRight) 2124 c.lineTo(right, bottom + offset); 2125 else 2126 c.moveTo(right, bottom + offset); 2127 if (drawBottom) 2128 c.lineTo(left, bottom + offset); 2129 else 2130 c.moveTo(left, bottom + offset); 2131 c.stroke(); 2132 } 2133 } 2134 2135 function drawSeriesBars(series) { 2136 function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) { 2137 var points = datapoints.points, ps = datapoints.pointsize; 2138 2139 for (var i = 0; i < points.length; i += ps) { 2140 if (points[i] == null) 2141 continue; 2142 drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal, series.bars.lineWidth); 2143 } 2144 } 2145 2146 ctx.save(); 2147 ctx.translate(plotOffset.left, plotOffset.top); 2148 2149 // FIXME: figure out a way to add shadows (for instance along the right edge) 2150 ctx.lineWidth = series.bars.lineWidth; 2151 ctx.strokeStyle = series.color; 2152 var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; 2153 var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null; 2154 plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis); 2155 ctx.restore(); 2156 } 2157 2158 function getFillStyle(filloptions, seriesColor, bottom, top) { 2159 var fill = filloptions.fill; 2160 if (!fill) 2161 return null; 2162 2163 if (filloptions.fillColor) 2164 return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor); 2165 2166 var c = $.color.parse(seriesColor); 2167 c.a = typeof fill == "number" ? fill : 0.4; 2168 c.normalize(); 2169 return c.toString(); 2170 } 2171 2172 function insertLegend() { 2173 placeholder.find(".legend").remove(); 2174 2175 if (!options.legend.show) 2176 return; 2177 2178 var fragments = [], rowStarted = false, 2179 lf = options.legend.labelFormatter, s, label; 2180 for (var i = 0; i < series.length; ++i) { 2181 s = series[i]; 2182 label = s.label; 2183 if (!label) 2184 continue; 2185 2186 if (i % options.legend.noColumns == 0) { 2187 if (rowStarted) 2188 fragments.push('</tr>'); 2189 fragments.push('<tr>'); 2190 rowStarted = true; 2191 } 2192 2193 if (lf) 2194 label = lf(label, s); 2195 2196 fragments.push( 2197 '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.color + ';overflow:hidden"></div></div></td>' + 2198 '<td class="legendLabel">' + label + '</td>'); 2199 } 2200 if (rowStarted) 2201 fragments.push('</tr>'); 2202 2203 if (fragments.length == 0) 2204 return; 2205 2206 var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>'; 2207 if (options.legend.container != null) 2208 $(options.legend.container).html(table); 2209 else { 2210 var pos = "", 2211 p = options.legend.position, 2212 m = options.legend.margin; 2213 if (m[0] == null) 2214 m = [m, m]; 2215 if (p.charAt(0) == "n")
vendor: 13,517 bytes, lines 2216-2546
2216 pos += 'top:' + (m[1] + plotOffset.top) + 'px;'; 2217 else if (p.charAt(0) == "s") 2218 pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;'; 2219 if (p.charAt(1) == "e") 2220 pos += 'right:' + (m[0] + plotOffset.right) + 'px;'; 2221 else if (p.charAt(1) == "w") 2222 pos += 'left:' + (m[0] + plotOffset.left) + 'px;'; 2223 var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder); 2224 if (options.legend.backgroundOpacity != 0.0) { 2225 // put in the transparent background 2226 // separately to avoid blended labels and 2227 // label boxes 2228 var c = options.legend.backgroundColor; 2229 if (c == null) { 2230 c = options.grid.backgroundColor; 2231 if (c && typeof c == "string") 2232 c = $.color.parse(c); 2233 else 2234 c = $.color.extract(legend, 'background-color'); 2235 c.a = 1; 2236 c = c.toString(); 2237 } 2238 var div = legend.children(); 2239 $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity); 2240 } 2241 } 2242 } 2243 2244 2245 // interactive features 2246 2247 var highlights = [], 2248 redrawTimeout = null; 2249 2250 // returns the data item the mouse is over, or null if none is found 2251 function findNearbyItem(mouseX, mouseY, seriesFilter) { 2252 var maxDistance = options.grid.mouseActiveRadius, 2253 smallestDistance = maxDistance * maxDistance + 1, 2254 item = null, foundPoint = false, i, j; 2255 2256 for (i = series.length - 1; i >= 0; --i) { 2257 if (!seriesFilter(series[i])) 2258 continue; 2259 2260 var s = series[i], 2261 axisx = s.xaxis, 2262 axisy = s.yaxis, 2263 points = s.datapoints.points, 2264 ps = s.datapoints.pointsize, 2265 mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster 2266 my = axisy.c2p(mouseY), 2267 maxx = maxDistance / axisx.scale, 2268 maxy = maxDistance / axisy.scale; 2269 2270 // with inverse transforms, we can't use the maxx/maxy 2271 // optimization, sadly 2272 if (axisx.options.inverseTransform) 2273 maxx = Number.MAX_VALUE; 2274 if (axisy.options.inverseTransform) 2275 maxy = Number.MAX_VALUE; 2276 2277 if (s.lines.show || s.points.show) { 2278 for (j = 0; j < points.length; j += ps) { 2279 var x = points[j], y = points[j + 1]; 2280 if (x == null) 2281 continue; 2282 2283 // For points and lines, the cursor must be within a 2284 // certain distance to the data point 2285 if (x - mx > maxx || x - mx < -maxx || 2286 y - my > maxy || y - my < -maxy) 2287 continue; 2288 2289 // We have to calculate distances in pixels, not in 2290 // data units, because the scales of the axes may be different 2291 var dx = Math.abs(axisx.p2c(x) - mouseX), 2292 dy = Math.abs(axisy.p2c(y) - mouseY), 2293 dist = dx * dx + dy * dy; // we save the sqrt 2294 2295 // use <= to ensure last point takes precedence 2296 // (last generally means on top of) 2297 if (dist < smallestDistance) { 2298 smallestDistance = dist; 2299 item = [i, j / ps]; 2300 } 2301 } 2302 } 2303 2304 if (s.bars.show && !item) { // no other point can be nearby 2305 var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2, 2306 barRight = barLeft + s.bars.barWidth; 2307 2308 for (j = 0; j < points.length; j += ps) { 2309 var x = points[j], y = points[j + 1], b = points[j + 2]; 2310 if (x == null) 2311 continue; 2312 2313 // for a bar graph, the cursor must be inside the bar 2314 if (series[i].bars.horizontal ? 2315 (mx <= Math.max(b, x) && mx >= Math.min(b, x) && 2316 my >= y + barLeft && my <= y + barRight) : 2317 (mx >= x + barLeft && mx <= x + barRight && 2318 my >= Math.min(b, y) && my <= Math.max(b, y))) 2319 item = [i, j / ps]; 2320 } 2321 } 2322 } 2323 2324 if (item) { 2325 i = item[0]; 2326 j = item[1]; 2327 ps = series[i].datapoints.pointsize; 2328 2329 return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps), 2330 dataIndex: j, 2331 series: series[i], 2332 seriesIndex: i }; 2333 } 2334 2335 return null; 2336 } 2337 2338 function onMouseMove(e) { 2339 if (options.grid.hoverable) 2340 triggerClickHoverEvent("plothover", e, 2341 function (s) { return s["hoverable"] != false; }); 2342 } 2343 2344 function onMouseLeave(e) { 2345 if (options.grid.hoverable) 2346 triggerClickHoverEvent("plothover", e, 2347 function (s) { return false; }); 2348 } 2349 2350 function onClick(e) { 2351 triggerClickHoverEvent("plotclick", e, 2352 function (s) { return s["clickable"] != false; }); 2353 } 2354 2355 // trigger click or hover event (they send the same parameters 2356 // so we share their code) 2357 function triggerClickHoverEvent(eventname, event, seriesFilter) { 2358 var offset = eventHolder.offset(), 2359 canvasX = event.pageX - offset.left - plotOffset.left, 2360 canvasY = event.pageY - offset.top - plotOffset.top, 2361 pos = canvasToAxisCoords({ left: canvasX, top: canvasY }); 2362 2363 pos.pageX = event.pageX; 2364 pos.pageY = event.pageY; 2365 2366 var item = findNearbyItem(canvasX, canvasY, seriesFilter); 2367 2368 if (item) { 2369 // fill in mouse pos for any listeners out there 2370 item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left); 2371 item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top); 2372 } 2373 2374 if (options.grid.autoHighlight) { 2375 // clear auto-highlights 2376 for (var i = 0; i < highlights.length; ++i) { 2377 var h = highlights[i]; 2378 if (h.auto == eventname && 2379 !(item && h.series == item.series && 2380 h.point[0] == item.datapoint[0] && 2381 h.point[1] == item.datapoint[1])) 2382 unhighlight(h.series, h.point); 2383 } 2384 2385 if (item) 2386 highlight(item.series, item.datapoint, eventname); 2387 } 2388 2389 placeholder.trigger(eventname, [ pos, item ]); 2390 } 2391 2392 function triggerRedrawOverlay() { 2393 if (!redrawTimeout) 2394 redrawTimeout = setTimeout(drawOverlay, 30); 2395 } 2396 2397 function drawOverlay() { 2398 redrawTimeout = null; 2399 2400 // draw highlights 2401 octx.save(); 2402 octx.clearRect(0, 0, canvasWidth, canvasHeight); 2403 octx.translate(plotOffset.left, plotOffset.top); 2404 2405 var i, hi; 2406 for (i = 0; i < highlights.length; ++i) { 2407 hi = highlights[i]; 2408 2409 if (hi.series.bars.show) 2410 drawBarHighlight(hi.series, hi.point); 2411 else 2412 drawPointHighlight(hi.series, hi.point); 2413 } 2414 octx.restore(); 2415 2416 executeHooks(hooks.drawOverlay, [octx]); 2417 } 2418 2419 function highlight(s, point, auto) { 2420 if (typeof s == "number") 2421 s = series[s]; 2422 2423 if (typeof point == "number") { 2424 var ps = s.datapoints.pointsize; 2425 point = s.datapoints.points.slice(ps * point, ps * (point + 1)); 2426 } 2427 2428 var i = indexOfHighlight(s, point); 2429 if (i == -1) { 2430 highlights.push({ series: s, point: point, auto: auto }); 2431 2432 triggerRedrawOverlay(); 2433 } 2434 else if (!auto) 2435 highlights[i].auto = false; 2436 } 2437 2438 function unhighlight(s, point) { 2439 if (s == null && point == null) { 2440 highlights = []; 2441 triggerRedrawOverlay(); 2442 } 2443 2444 if (typeof s == "number") 2445 s = series[s]; 2446 2447 if (typeof point == "number") 2448 point = s.data[point]; 2449 2450 var i = indexOfHighlight(s, point); 2451 if (i != -1) { 2452 highlights.splice(i, 1); 2453 2454 triggerRedrawOverlay(); 2455 } 2456 } 2457 2458 function indexOfHighlight(s, p) { 2459 for (var i = 0; i < highlights.length; ++i) { 2460 var h = highlights[i]; 2461 if (h.series == s && h.point[0] == p[0] 2462 && h.point[1] == p[1]) 2463 return i; 2464 } 2465 return -1; 2466 } 2467 2468 function drawPointHighlight(series, point) { 2469 var x = point[0], y = point[1], 2470 axisx = series.xaxis, axisy = series.yaxis; 2471 2472 if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max) 2473 return; 2474 2475 var pointRadius = series.points.radius + series.points.lineWidth / 2; 2476 octx.lineWidth = pointRadius; 2477 octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString(); 2478 var radius = 1.5 * pointRadius, 2479 x = axisx.p2c(x), 2480 y = axisy.p2c(y); 2481 2482 octx.beginPath(); 2483 if (series.points.symbol == "circle") 2484 octx.arc(x, y, radius, 0, 2 * Math.PI, false); 2485 else 2486 series.points.symbol(octx, x, y, radius, false); 2487 octx.closePath(); 2488 octx.stroke(); 2489 } 2490 2491 function drawBarHighlight(series, point) { 2492 octx.lineWidth = series.bars.lineWidth; 2493 octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString(); 2494 var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString(); 2495 var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2; 2496 drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth, 2497 0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal, series.bars.lineWidth); 2498 } 2499 2500 function getColorOrGradient(spec, bottom, top, defaultColor) { 2501 if (typeof spec == "string") 2502 return spec; 2503 else { 2504 // assume this is a gradient spec; IE currently only 2505 // supports a simple vertical gradient properly, so that's 2506 // what we support too 2507 var gradient = ctx.createLinearGradient(0, top, 0, bottom); 2508 2509 for (var i = 0, l = spec.colors.length; i < l; ++i) { 2510 var c = spec.colors[i]; 2511 if (typeof c != "string") { 2512 var co = $.color.parse(defaultColor); 2513 if (c.brightness != null) 2514 co = co.scale('rgb', c.brightness) 2515 if (c.opacity != null) 2516 co.a *= c.opacity; 2517 c = co.toString(); 2518 } 2519 gradient.addColorStop(i / (l - 1), c); 2520 } 2521 2522 return gradient; 2523 } 2524 } 2525 } 2526 2527 $.plot = function(placeholder, data, options) { 2528 //var t0 = new Date(); 2529 var plot = new Plot($(placeholder), data, options, $.plot.plugins); 2530 //(window.console ? console.log : alert)("time used (msecs): " + ((new Date()).getTime() - t0.getTime())); 2531 return plot; 2532 }; 2533 2534 $.plot.version = "0.7"; 2535 2536 $.plot.plugins = []; 2537 2538 // returns a string with the date d formatted according to fmt 2539 $.plot.formatDate = function(d, fmt, monthNames) { 2540 var leftPad = function(n) { 2541 n = "" + n; 2542 return n.length == 1 ? "0" + n : n; 2543 }; 2544 2545 var r = []; 2546 var escape = false, padNext = false;
2547 var hours = d.getUTCHours(); 2548 var isAM = hours < 12; 2549 if (monthNames == null) 2550 monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]; 2551 2552 if (fmt.search(/%p|%P/) != -1) { 2553 if (hours > 12) { 2554 hours = hours - 12; 2555 } else if (hours == 0) { 2556 hours = 12; 2557 } 2558 } 2559 for (var i = 0; i < fmt.length; ++i) { 2560 var c = fmt.charAt(i); 2561 2562 if (escape) { 2563 switch (c) { 2564 case 'h': c = "" + hours; break; 2565 case 'H': c = leftPad(hours); break; 2566 case 'M': c = leftPad(d.getUTCMinutes()); break; 2567 case 'S': c = leftPad(d.getUTCSeconds()); break; 2568 case 'd': c = "" + d.getUTCDate(); break; 2569 case 'm': c = "" + (d.getUTCMonth() + 1); break; 2570 case 'y': c = "" + d.getUTCFullYear(); break; 2571 case 'b': c = "" + monthNames[d.getUTCMonth()]; break; 2572 case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break; 2573 case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break; 2574 case '0': c = ""; padNext = true; break; 2575 } 2576 if (c && padNext) { 2577 c = leftPad(c); 2578 padNext = false; 2579 } 2580 r.push(c); 2581 if (!padNext) 2582 escape = false;
2583 } 2584 else { 2585 if (c == "%") 2586 escape = true; 2587 else 2588 r.push(c); 2589 } 2590 } 2591 return r.join(""); 2592 }; 2593 2594 // round to nearby lower multiple of base 2595 function floorInBase(n, base) { 2596 return base * Math.floor(n / base); 2597 } 2598 2599})(jQuery);
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.