[77] | 1 | /** |
---|
| 2 | * o------------------------------------------------------------------------------o |
---|
| 3 | * | This file is part of the RGraph package - you can learn more at: | |
---|
| 4 | * | | |
---|
| 5 | * | http://www.rgraph.net | |
---|
| 6 | * | | |
---|
| 7 | * | This package is licensed under the RGraph license. For all kinds of business | |
---|
| 8 | * | purposes there is a small one-time licensing fee to pay and for non | |
---|
| 9 | * | commercial purposes it is free to use. You can read the full license here: | |
---|
| 10 | * | | |
---|
| 11 | * | http://www.rgraph.net/LICENSE.txt | |
---|
| 12 | * o------------------------------------------------------------------------------o |
---|
| 13 | */ |
---|
| 14 | |
---|
| 15 | if (typeof(RGraph) == 'undefined') RGraph = {}; |
---|
| 16 | |
---|
| 17 | /** |
---|
| 18 | * The rose chart constuctor |
---|
| 19 | * |
---|
| 20 | * @param object canvas |
---|
| 21 | * @param array data |
---|
| 22 | */ |
---|
| 23 | RGraph.Rose = function (id, data) |
---|
| 24 | { |
---|
| 25 | this.id = id; |
---|
| 26 | this.canvas = document.getElementById(id); |
---|
| 27 | this.context = this.canvas.getContext('2d'); |
---|
| 28 | this.data = data; |
---|
| 29 | this.canvas.__object__ = this; |
---|
| 30 | this.type = 'rose'; |
---|
| 31 | this.isRGraph = true; |
---|
| 32 | |
---|
| 33 | |
---|
| 34 | /** |
---|
| 35 | * Compatibility with older browsers |
---|
| 36 | */ |
---|
| 37 | RGraph.OldBrowserCompat(this.context); |
---|
| 38 | |
---|
| 39 | |
---|
| 40 | this.centerx = 0; |
---|
| 41 | this.centery = 0; |
---|
| 42 | this.radius = 0; |
---|
| 43 | this.max = 0; |
---|
| 44 | |
---|
| 45 | this.properties = { |
---|
| 46 | 'chart.radius': null, |
---|
| 47 | 'chart.colors': ['red', 'rgb(0,255,255)', 'rgb(0,255,0)', 'gray', 'blue', 'rgb(255,128,255)','green', 'pink', 'gray', 'aqua'], |
---|
| 48 | 'chart.colors.sequential': false, |
---|
| 49 | 'chart.colors.alpha': null, |
---|
| 50 | 'chart.strokestyle': 'rgba(0,0,0,0.5)', |
---|
| 51 | 'chart.gutter.left': 25, |
---|
| 52 | 'chart.gutter.right': 25, |
---|
| 53 | 'chart.gutter.top': 25, |
---|
| 54 | 'chart.gutter.bottom': 25, |
---|
| 55 | 'chart.title': '', |
---|
| 56 | 'chart.title.background': null, |
---|
| 57 | 'chart.title.hpos': null, |
---|
| 58 | 'chart.title.vpos': null, |
---|
| 59 | 'chart.labels': null, |
---|
| 60 | 'chart.labels.position': 'center', |
---|
| 61 | 'chart.labels.axes': 'nsew', |
---|
| 62 | 'chart.labels.offset': 0, |
---|
| 63 | 'chart.text.color': 'black', |
---|
| 64 | 'chart.text.font': 'Verdana', |
---|
| 65 | 'chart.text.size': 10, |
---|
| 66 | 'chart.key': null, |
---|
| 67 | 'chart.key.background': 'white', |
---|
| 68 | 'chart.key.position': 'graph', |
---|
| 69 | 'chart.key.halign': 'right', |
---|
| 70 | 'chart.key.shadow': false, |
---|
| 71 | 'chart.key.shadow.color': '#666', |
---|
| 72 | 'chart.key.shadow.blur': 3, |
---|
| 73 | 'chart.key.shadow.offsetx': 2, |
---|
| 74 | 'chart.key.shadow.offsety': 2, |
---|
| 75 | 'chart.key.position.gutter.boxed': true, |
---|
| 76 | 'chart.key.position.x': null, |
---|
| 77 | 'chart.key.position.y': null, |
---|
| 78 | 'chart.key.color.shape': 'square', |
---|
| 79 | 'chart.key.rounded': true, |
---|
| 80 | 'chart.key.linewidth': 1, |
---|
| 81 | 'chart.contextmenu': null, |
---|
| 82 | 'chart.tooltips': null, |
---|
| 83 | 'chart.tooltips.event': 'onclick', |
---|
| 84 | 'chart.tooltips.effect': 'fade', |
---|
| 85 | 'chart.tooltips.css.class': 'RGraph_tooltip', |
---|
| 86 | 'chart.tooltips.highlight': true, |
---|
| 87 | 'chart.highlight.stroke': 'black', |
---|
| 88 | 'chart.highlight.fill': 'rgba(255,255,255,0.5)', |
---|
| 89 | 'chart.annotatable': false, |
---|
| 90 | 'chart.annotate.color': 'black', |
---|
| 91 | 'chart.zoom.factor': 1.5, |
---|
| 92 | 'chart.zoom.fade.in': true, |
---|
| 93 | 'chart.zoom.fade.out': true, |
---|
| 94 | 'chart.zoom.hdir': 'right', |
---|
| 95 | 'chart.zoom.vdir': 'down', |
---|
| 96 | 'chart.zoom.frames': 10, |
---|
| 97 | 'chart.zoom.delay': 50, |
---|
| 98 | 'chart.zoom.shadow': true, |
---|
| 99 | 'chart.zoom.mode': 'canvas', |
---|
| 100 | 'chart.zoom.thumbnail.width': 75, |
---|
| 101 | 'chart.zoom.thumbnail.height': 75, |
---|
| 102 | 'chart.zoom.background': true, |
---|
| 103 | 'chart.zoom.action': 'zoom', |
---|
| 104 | 'chart.resizable': false, |
---|
| 105 | 'chart.resize.handle.adjust': [0,0], |
---|
| 106 | 'chart.resize.handle.background': null, |
---|
| 107 | 'chart.adjustable': false, |
---|
| 108 | 'chart.ymax': null, |
---|
| 109 | 'chart.ymin': 0, |
---|
| 110 | 'chart.scale.decimals': null, |
---|
| 111 | 'chart.variant': 'stacked' |
---|
| 112 | } |
---|
| 113 | |
---|
| 114 | |
---|
| 115 | /** |
---|
| 116 | * Set the .getShape commonly named method |
---|
| 117 | */ |
---|
| 118 | this.getShape = this.getSegment; |
---|
| 119 | } |
---|
| 120 | |
---|
| 121 | |
---|
| 122 | /** |
---|
| 123 | * A simple setter |
---|
| 124 | * |
---|
| 125 | * @param string name The name of the property to set |
---|
| 126 | * @param string value The value of the property |
---|
| 127 | */ |
---|
| 128 | RGraph.Rose.prototype.Set = function (name, value) |
---|
| 129 | { |
---|
| 130 | this.properties[name.toLowerCase()] = value; |
---|
| 131 | } |
---|
| 132 | |
---|
| 133 | |
---|
| 134 | /** |
---|
| 135 | * A simple getter |
---|
| 136 | * |
---|
| 137 | * @param string name The name of the property to get |
---|
| 138 | */ |
---|
| 139 | RGraph.Rose.prototype.Get = function (name) |
---|
| 140 | { |
---|
| 141 | return this.properties[name.toLowerCase()]; |
---|
| 142 | } |
---|
| 143 | |
---|
| 144 | |
---|
| 145 | /** |
---|
| 146 | * This method draws the rose chart |
---|
| 147 | */ |
---|
| 148 | RGraph.Rose.prototype.Draw = function () |
---|
| 149 | { |
---|
| 150 | /** |
---|
| 151 | * Fire the onbeforedraw event |
---|
| 152 | */ |
---|
| 153 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
---|
| 154 | |
---|
| 155 | /** |
---|
| 156 | * Clear all of this canvases event handlers (the ones installed by RGraph) |
---|
| 157 | */ |
---|
| 158 | RGraph.ClearEventListeners(this.id); |
---|
| 159 | |
---|
| 160 | |
---|
| 161 | /** |
---|
| 162 | * This doesn't affect the chart, but is used for compatibility |
---|
| 163 | */ |
---|
| 164 | this.gutterLeft = this.Get('chart.gutter.left'); |
---|
| 165 | this.gutterRight = this.Get('chart.gutter.right'); |
---|
| 166 | this.gutterTop = this.Get('chart.gutter.top'); |
---|
| 167 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
---|
| 168 | |
---|
| 169 | // Calculate the radius |
---|
| 170 | this.radius = (Math.min(RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight, RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2); |
---|
| 171 | this.centerx = RGraph.GetWidth(this) / 2; |
---|
| 172 | this.centery = RGraph.GetHeight(this) / 2; |
---|
| 173 | this.angles = []; |
---|
| 174 | this.total = 0; |
---|
| 175 | this.startRadians = 0; |
---|
| 176 | |
---|
| 177 | // User specified radius |
---|
| 178 | if (typeof(this.Get('chart.radius')) == 'number') { |
---|
| 179 | this.radius = this.Get('chart.radius'); |
---|
| 180 | } |
---|
| 181 | |
---|
| 182 | /** |
---|
| 183 | * Change the centerx marginally if the key is defined |
---|
| 184 | */ |
---|
| 185 | if (this.Get('chart.key') && this.Get('chart.key').length > 0 && this.Get('chart.key').length >= 3) { |
---|
| 186 | this.centerx = this.centerx - this.Get('chart.gutter.right') + 5; |
---|
| 187 | } |
---|
| 188 | |
---|
| 189 | this.DrawBackground(); |
---|
| 190 | this.DrawRose(); |
---|
| 191 | this.DrawLabels(); |
---|
| 192 | |
---|
| 193 | /** |
---|
| 194 | * Setup the context menu if required |
---|
| 195 | */ |
---|
| 196 | if (this.Get('chart.contextmenu')) { |
---|
| 197 | RGraph.ShowContext(this); |
---|
| 198 | } |
---|
| 199 | |
---|
| 200 | /** |
---|
| 201 | * Tooltips |
---|
| 202 | */ |
---|
| 203 | if (this.Get('chart.tooltips')) { |
---|
| 204 | |
---|
| 205 | /** |
---|
| 206 | * Register this object for redrawing |
---|
| 207 | */ |
---|
| 208 | RGraph.Register(this); |
---|
| 209 | |
---|
| 210 | /** |
---|
| 211 | * The onclick event |
---|
| 212 | */ |
---|
| 213 | var canvas_onclick_func = function (e) |
---|
| 214 | { |
---|
| 215 | var obj = e.target.__object__; |
---|
| 216 | var canvas = e.target; |
---|
| 217 | var context = canvas.getContext('2d'); |
---|
| 218 | |
---|
| 219 | e = RGraph.FixEventObject(e); |
---|
| 220 | |
---|
| 221 | RGraph.Redraw(); |
---|
| 222 | |
---|
| 223 | var segment = obj.getSegment(e); |
---|
| 224 | |
---|
| 225 | if (segment && obj.Get('chart.tooltips')) { |
---|
| 226 | |
---|
| 227 | /** |
---|
| 228 | * Get the tooltip text |
---|
| 229 | */ |
---|
| 230 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
---|
| 231 | var text = String(obj.Get('chart.tooltips')(segment[6])); |
---|
| 232 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[segment[6]]) == 'function') { |
---|
| 233 | var text = String(obj.Get('chart.tooltips')[segment[6]](segment[6])); |
---|
| 234 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && (typeof(obj.Get('chart.tooltips')[segment[6]]) == 'string' || typeof(obj.Get('chart.tooltips')[segment[6]]) == 'number')) { |
---|
| 235 | var text = String(obj.Get('chart.tooltips')[segment[6]]); |
---|
| 236 | } else { |
---|
| 237 | var text = null; |
---|
| 238 | } |
---|
| 239 | |
---|
| 240 | if (text) { |
---|
| 241 | context.beginPath(); |
---|
| 242 | context.strokeStyle = obj.Get('chart.highlight.stroke'); |
---|
| 243 | context.fillStyle = obj.Get('chart.highlight.fill'); |
---|
| 244 | |
---|
| 245 | // This highlights the chart |
---|
| 246 | context.arc(obj.centerx, obj.centery, segment[3], segment[4] / 57.3, segment[5] / 57.3, false); |
---|
| 247 | context.arc(obj.centerx, obj.centery, segment[2] + 0.01, segment[5] / 57.3, segment[4] / 57.3, true); |
---|
| 248 | |
---|
| 249 | context.closePath(); |
---|
| 250 | |
---|
| 251 | context.fill(); |
---|
| 252 | context.stroke(); |
---|
| 253 | |
---|
| 254 | context.strokeStyle = 'rgba(0,0,0,0)'; |
---|
| 255 | |
---|
| 256 | // Taken out on 12th June 2011 |
---|
| 257 | //obj.DrawLabels(); |
---|
| 258 | |
---|
| 259 | /** |
---|
| 260 | * Show the tooltip |
---|
| 261 | */ |
---|
| 262 | RGraph.Tooltip(canvas, text, e.pageX, e.pageY, segment[6]); |
---|
| 263 | |
---|
| 264 | e.stopPropagation(); |
---|
| 265 | } |
---|
| 266 | |
---|
| 267 | return; |
---|
| 268 | } |
---|
| 269 | } |
---|
| 270 | this.canvas.addEventListener('click', canvas_onclick_func, false); |
---|
| 271 | RGraph.AddEventListener(this.id, 'click', canvas_onclick_func); |
---|
| 272 | |
---|
| 273 | |
---|
| 274 | /** |
---|
| 275 | * The onmousemove event |
---|
| 276 | */ |
---|
| 277 | var canvas_onmousemove_func = function (e) |
---|
| 278 | { |
---|
| 279 | |
---|
| 280 | var obj = e.target.__object__; |
---|
| 281 | var canvas = e.target; |
---|
| 282 | var context = canvas.getContext('2d'); |
---|
| 283 | |
---|
| 284 | e = RGraph.FixEventObject(e); |
---|
| 285 | |
---|
| 286 | var segment = obj.getSegment(e); |
---|
| 287 | |
---|
| 288 | if (segment && obj.Get('chart.tooltips')) { |
---|
| 289 | |
---|
| 290 | /** |
---|
| 291 | * Get the tooltip text |
---|
| 292 | */ |
---|
| 293 | if (typeof(obj.Get('chart.tooltips')) == 'function') { |
---|
| 294 | var text = String(obj.Get('chart.tooltips')(segment[6])); |
---|
| 295 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && typeof(obj.Get('chart.tooltips')[segment[6]]) == 'function') { |
---|
| 296 | var text = String(obj.Get('chart.tooltips')[segment[6]](segment[6])); |
---|
| 297 | } else if (typeof(obj.Get('chart.tooltips')) == 'object' && (typeof(obj.Get('chart.tooltips')[segment[6]]) == 'string' || typeof(obj.Get('chart.tooltips')[segment[6]]) == 'number')) { |
---|
| 298 | var text = String(obj.Get('chart.tooltips')[segment[6]]); |
---|
| 299 | } else { |
---|
| 300 | var text = null; |
---|
| 301 | } |
---|
| 302 | |
---|
| 303 | if (text) { |
---|
| 304 | canvas.style.cursor = 'pointer'; |
---|
| 305 | |
---|
| 306 | /******************************************************* |
---|
| 307 | * This is here in case tooltips are using the |
---|
| 308 | * onmousemove event |
---|
| 309 | *******************************************************/ |
---|
| 310 | if (obj.Get('chart.tooltips.event') == 'onmousemove') { |
---|
| 311 | if (!RGraph.Registry.Get('chart.tooltip') || RGraph.Registry.Get('chart.tooltip').__index__ != segment[6]) { |
---|
| 312 | canvas_onclick_func(e); |
---|
| 313 | } |
---|
| 314 | } |
---|
| 315 | |
---|
| 316 | } else { |
---|
| 317 | canvas.style.cursor = 'default'; |
---|
| 318 | } |
---|
| 319 | |
---|
| 320 | return; |
---|
| 321 | } |
---|
| 322 | |
---|
| 323 | canvas.style.cursor = 'default'; |
---|
| 324 | } |
---|
| 325 | this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); |
---|
| 326 | RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); |
---|
| 327 | } |
---|
| 328 | |
---|
| 329 | /** |
---|
| 330 | * If the canvas is annotatable, do install the event handlers |
---|
| 331 | */ |
---|
| 332 | if (this.Get('chart.annotatable')) { |
---|
| 333 | RGraph.Annotate(this); |
---|
| 334 | } |
---|
| 335 | |
---|
| 336 | /** |
---|
| 337 | * This bit shows the mini zoom window if requested |
---|
| 338 | */ |
---|
| 339 | if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { |
---|
| 340 | RGraph.ShowZoomWindow(this); |
---|
| 341 | } |
---|
| 342 | |
---|
| 343 | |
---|
| 344 | /** |
---|
| 345 | * This function enables resizing |
---|
| 346 | */ |
---|
| 347 | if (this.Get('chart.resizable')) { |
---|
| 348 | RGraph.AllowResizing(this); |
---|
| 349 | } |
---|
| 350 | |
---|
| 351 | |
---|
| 352 | /** |
---|
| 353 | * This function enables adjusting |
---|
| 354 | */ |
---|
| 355 | if (this.Get('chart.adjustable')) { |
---|
| 356 | RGraph.AllowAdjusting(this); |
---|
| 357 | } |
---|
| 358 | |
---|
| 359 | /** |
---|
| 360 | * Fire the RGraph ondraw event |
---|
| 361 | */ |
---|
| 362 | RGraph.FireCustomEvent(this, 'ondraw'); |
---|
| 363 | } |
---|
| 364 | |
---|
| 365 | /** |
---|
| 366 | * This method draws the rose charts background |
---|
| 367 | */ |
---|
| 368 | RGraph.Rose.prototype.DrawBackground = function () |
---|
| 369 | { |
---|
| 370 | this.context.lineWidth = 1; |
---|
| 371 | |
---|
| 372 | // Draw the background grey circles |
---|
| 373 | this.context.strokeStyle = '#ccc'; |
---|
| 374 | for (var i=15; i<this.radius - (RGraph.isIE8() ? 5 : 0); i+=15) {// Radius must be greater than 0 for Opera to work |
---|
| 375 | //this.context.moveTo(this.centerx + i, this.centery); |
---|
| 376 | |
---|
| 377 | // Radius must be greater than 0 for Opera to work |
---|
| 378 | this.context.arc(this.centerx, this.centery, i, 0, (2 * Math.PI), 0); |
---|
| 379 | } |
---|
| 380 | this.context.stroke(); |
---|
| 381 | |
---|
| 382 | // Draw the background lines that go from the center outwards |
---|
| 383 | this.context.beginPath(); |
---|
| 384 | for (var i=15; i<360; i+=15) { |
---|
| 385 | |
---|
| 386 | // Radius must be greater than 0 for Opera to work |
---|
| 387 | this.context.arc(this.centerx, this.centery, this.radius, i / 57.3, (i + 0.1) / 57.3, 0); // The 0.1 avoids a bug in Chrome 6 |
---|
| 388 | |
---|
| 389 | this.context.lineTo(this.centerx, this.centery); |
---|
| 390 | } |
---|
| 391 | this.context.stroke(); |
---|
| 392 | |
---|
| 393 | this.context.beginPath(); |
---|
| 394 | this.context.strokeStyle = 'black'; |
---|
| 395 | |
---|
| 396 | // Draw the X axis |
---|
| 397 | this.context.moveTo(this.centerx - this.radius, this.centery); |
---|
| 398 | this.context.lineTo(this.centerx + this.radius, this.centery); |
---|
| 399 | |
---|
| 400 | // Draw the X ends |
---|
| 401 | this.context.moveTo(this.centerx - this.radius, this.centery - 5); |
---|
| 402 | this.context.lineTo(this.centerx - this.radius, this.centery + 5); |
---|
| 403 | this.context.moveTo(this.centerx + this.radius, this.centery - 5); |
---|
| 404 | this.context.lineTo(this.centerx + this.radius, this.centery + 5); |
---|
| 405 | |
---|
| 406 | // Draw the X check marks |
---|
| 407 | for (var i=(this.centerx - this.radius); i<(this.centerx + this.radius); i+=20) { |
---|
| 408 | this.context.moveTo(i, this.centery - 3); |
---|
| 409 | this.context.lineTo(i, this.centery + 3); |
---|
| 410 | } |
---|
| 411 | |
---|
| 412 | // Draw the Y check marks |
---|
| 413 | for (var i=(this.centery - this.radius); i<(this.centery + this.radius); i+=20) { |
---|
| 414 | this.context.moveTo(this.centerx - 3, i); |
---|
| 415 | this.context.lineTo(this.centerx + 3, i); |
---|
| 416 | } |
---|
| 417 | |
---|
| 418 | // Draw the Y axis |
---|
| 419 | this.context.moveTo(this.centerx, this.centery - this.radius); |
---|
| 420 | this.context.lineTo(this.centerx, this.centery + this.radius); |
---|
| 421 | |
---|
| 422 | // Draw the Y ends |
---|
| 423 | this.context.moveTo(this.centerx - 5, this.centery - this.radius); |
---|
| 424 | this.context.lineTo(this.centerx + 5, this.centery - this.radius); |
---|
| 425 | |
---|
| 426 | this.context.moveTo(this.centerx - 5, this.centery + this.radius); |
---|
| 427 | this.context.lineTo(this.centerx + 5, this.centery + this.radius); |
---|
| 428 | |
---|
| 429 | // Stroke it |
---|
| 430 | this.context.closePath(); |
---|
| 431 | this.context.stroke(); |
---|
| 432 | } |
---|
| 433 | |
---|
| 434 | |
---|
| 435 | /** |
---|
| 436 | * This method draws the data on the graph |
---|
| 437 | */ |
---|
| 438 | RGraph.Rose.prototype.DrawRose = function () |
---|
| 439 | { |
---|
| 440 | var max = 0; |
---|
| 441 | var data = this.data; |
---|
| 442 | |
---|
| 443 | // Must be at least two data points |
---|
| 444 | if (data.length < 2) { |
---|
| 445 | alert('[ROSE] Must be at least two data points! [' + data + ']'); |
---|
| 446 | return; |
---|
| 447 | } |
---|
| 448 | |
---|
| 449 | // Work out the maximum value and the sum |
---|
| 450 | if (!this.Get('chart.ymax')) { |
---|
| 451 | // Work out the max |
---|
| 452 | for (var i=0; i<data.length; ++i) { |
---|
| 453 | if (typeof(data[i]) == 'number') { |
---|
| 454 | max = Math.max(max, data[i]); |
---|
| 455 | } else if (typeof(data[i]) == 'object' && this.Get('chart.variant') == 'non-equi-angular') { |
---|
| 456 | max = Math.max(max, data[i][0]); |
---|
| 457 | |
---|
| 458 | // Fallback is stacked |
---|
| 459 | } else { |
---|
| 460 | max = Math.max(max, RGraph.array_sum(data[i])); |
---|
| 461 | } |
---|
| 462 | } |
---|
| 463 | |
---|
| 464 | this.scale = RGraph.getScale(max, this); |
---|
| 465 | this.max = this.scale[4]; |
---|
| 466 | } else { |
---|
| 467 | var ymax = this.Get('chart.ymax'); |
---|
| 468 | var ymin = this.Get('chart.ymin'); |
---|
| 469 | |
---|
| 470 | this.scale = [ |
---|
| 471 | ((ymax - ymin) * 0.2) + ymin, |
---|
| 472 | ((ymax - ymin) * 0.4) + ymin, |
---|
| 473 | ((ymax - ymin) * 0.6) + ymin, |
---|
| 474 | ((ymax - ymin) * 0.8) + ymin, |
---|
| 475 | ((ymax - ymin) * 1.0) + ymin |
---|
| 476 | ]; |
---|
| 477 | this.max = this.scale[4]; |
---|
| 478 | } |
---|
| 479 | |
---|
| 480 | this.sum = RGraph.array_sum(data); |
---|
| 481 | |
---|
| 482 | // Move to the centre |
---|
| 483 | this.context.moveTo(this.centerx, this.centery); |
---|
| 484 | |
---|
| 485 | this.context.stroke(); // Stroke the background so it stays grey |
---|
| 486 | |
---|
| 487 | // Transparency |
---|
| 488 | if (this.Get('chart.colors.alpha')) { |
---|
| 489 | this.context.globalAlpha = this.Get('chart.colors.alpha'); |
---|
| 490 | } |
---|
| 491 | |
---|
| 492 | /******************************************************* |
---|
| 493 | * A non-equi-angular Rose chart |
---|
| 494 | *******************************************************/ |
---|
| 495 | if (typeof(this.Get('chart.variant')) == 'string' && this.Get('chart.variant') == 'non-equi-angular') { |
---|
| 496 | /******************************************************* |
---|
| 497 | * NON-EQUI-ANGULAR GOES HERE |
---|
| 498 | *******************************************************/ |
---|
| 499 | var total=0; |
---|
| 500 | for (var i=0; i<data.length; ++i) { |
---|
| 501 | total += data[i][1]; |
---|
| 502 | } |
---|
| 503 | |
---|
| 504 | |
---|
| 505 | for (var i=0; i<this.data.length; ++i) { |
---|
| 506 | |
---|
| 507 | var segmentRadians = (this.data[i][1] / total) * (2 * Math.PI); |
---|
| 508 | var radius = ((this.data[i][0] - this.Get('chart.ymin')) / (this.max - this.Get('chart.ymin'))) * (this.radius - 10); |
---|
| 509 | |
---|
| 510 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 511 | this.context.fillStyle = this.Get('chart.colors')[0]; |
---|
| 512 | |
---|
| 513 | if (this.Get('chart.colors.sequential')) { |
---|
| 514 | this.context.fillStyle = this.Get('chart.colors')[i]; |
---|
| 515 | } |
---|
| 516 | |
---|
| 517 | this.context.beginPath(); // Begin the segment |
---|
| 518 | this.context.arc(this.centerx, this.centery, radius, this.startRadians - (Math.PI / 2), this.startRadians + segmentRadians - (Math.PI / 2), 0); |
---|
| 519 | this.context.lineTo(this.centerx, this.centery); |
---|
| 520 | this.context.closePath(); // End the segment |
---|
| 521 | |
---|
| 522 | this.context.stroke(); |
---|
| 523 | this.context.fill(); |
---|
| 524 | |
---|
| 525 | // Store the start and end angles |
---|
| 526 | this.angles.push([ |
---|
| 527 | ((this.startRadians - (Math.PI / 2)) * 57.3) + 90, |
---|
| 528 | (((this.startRadians + segmentRadians) - (Math.PI / 2)) * 57.3) + 90, |
---|
| 529 | 0, |
---|
| 530 | radius |
---|
| 531 | ]); |
---|
| 532 | |
---|
| 533 | this.startRadians += segmentRadians; |
---|
| 534 | } |
---|
| 535 | } else { |
---|
| 536 | /******************************************************* |
---|
| 537 | * Draw the segments |
---|
| 538 | *******************************************************/ |
---|
| 539 | for (var i=0; i<this.data.length; ++i) { |
---|
| 540 | |
---|
| 541 | this.context.strokeStyle = this.Get('chart.strokestyle'); |
---|
| 542 | this.context.fillStyle = this.Get('chart.colors')[0]; |
---|
| 543 | |
---|
| 544 | /******************************************************* |
---|
| 545 | * This allows sequential colors |
---|
| 546 | *******************************************************/ |
---|
| 547 | if (this.Get('chart.colors.sequential')) { |
---|
| 548 | this.context.fillStyle = this.Get('chart.colors')[i]; |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | var segmentRadians = (1 / this.data.length) * (2 * Math.PI); |
---|
| 552 | |
---|
| 553 | if (typeof(this.data[i]) == 'number') { |
---|
| 554 | this.context.beginPath(); // Begin the segment |
---|
| 555 | var radius = ((this.data[i] - this.Get('chart.ymin')) / (this.max - this.Get('chart.ymin'))) * (this.radius - 10); |
---|
| 556 | |
---|
| 557 | this.context.arc(this.centerx, this.centery, radius, this.startRadians - (Math.PI / 2), this.startRadians + segmentRadians - (Math.PI / 2), 0); |
---|
| 558 | this.context.lineTo(this.centerx, this.centery); |
---|
| 559 | this.context.closePath(); // End the segment |
---|
| 560 | this.context.stroke(); |
---|
| 561 | this.context.fill(); |
---|
| 562 | |
---|
| 563 | // Store the start and end angles |
---|
| 564 | this.angles.push([ |
---|
| 565 | ((this.startRadians - (Math.PI / 2)) * 57.3) + 90, |
---|
| 566 | (((this.startRadians + segmentRadians) - (Math.PI / 2)) * 57.3) + 90, |
---|
| 567 | 0, |
---|
| 568 | radius |
---|
| 569 | ]); |
---|
| 570 | /******************************************************* |
---|
| 571 | * Draw a stacked segment |
---|
| 572 | *******************************************************/ |
---|
| 573 | } else if (typeof(this.data[i]) == 'object') { |
---|
| 574 | |
---|
| 575 | for (var j=0; j<this.data[i].length; ++j) { |
---|
| 576 | |
---|
| 577 | this.context.fillStyle = this.Get('chart.colors')[j]; |
---|
| 578 | if (j == 0) { |
---|
| 579 | this.context.beginPath(); // Begin the segment |
---|
| 580 | var startRadius = 0; |
---|
| 581 | var endRadius = ((this.data[i][j] - this.Get('chart.ymin')) / (this.max - this.Get('chart.ymin'))) * (this.radius - 10); |
---|
| 582 | |
---|
| 583 | this.context.arc(this.centerx, |
---|
| 584 | this.centery, |
---|
| 585 | endRadius, |
---|
| 586 | this.startRadians - (Math.PI / 2), |
---|
| 587 | this.startRadians + segmentRadians - (Math.PI / 2), |
---|
| 588 | 0); |
---|
| 589 | this.context.lineTo(this.centerx, this.centery); |
---|
| 590 | this.context.closePath(); // End the segment |
---|
| 591 | this.context.stroke(); |
---|
| 592 | this.context.fill(); |
---|
| 593 | |
---|
| 594 | this.angles.push([ |
---|
| 595 | ((this.startRadians - (Math.PI / 2)) * 57.3) + 90, |
---|
| 596 | (((this.startRadians + segmentRadians) - (Math.PI / 2)) * 57.3) + 90, |
---|
| 597 | 0, |
---|
| 598 | endRadius |
---|
| 599 | ]); |
---|
| 600 | |
---|
| 601 | } else { |
---|
| 602 | |
---|
| 603 | this.context.beginPath(); // Begin the segment |
---|
| 604 | var startRadius = endRadius; // This comes from the prior iteration of this loop |
---|
| 605 | var endRadius = (((this.data[i][j] - this.Get('chart.ymin')) / (this.max - this.Get('chart.ymin'))) * (this.radius - 10)) + startRadius; |
---|
| 606 | |
---|
| 607 | this.context.arc(this.centerx, |
---|
| 608 | this.centery, |
---|
| 609 | startRadius, |
---|
| 610 | this.startRadians - (Math.PI / 2), |
---|
| 611 | this.startRadians + segmentRadians - (Math.PI / 2), |
---|
| 612 | 0); |
---|
| 613 | |
---|
| 614 | this.context.arc(this.centerx, |
---|
| 615 | this.centery, |
---|
| 616 | endRadius, |
---|
| 617 | this.startRadians + segmentRadians - (Math.PI / 2), |
---|
| 618 | this.startRadians - (Math.PI / 2), |
---|
| 619 | true); |
---|
| 620 | |
---|
| 621 | this.context.closePath(); // End the segment |
---|
| 622 | this.context.stroke(); |
---|
| 623 | this.context.fill(); |
---|
| 624 | |
---|
| 625 | this.angles.push([ |
---|
| 626 | ((this.startRadians - (Math.PI / 2)) * 57.3) + 90, |
---|
| 627 | ((this.startRadians + segmentRadians - (Math.PI / 2)) * 57.3) + 90, |
---|
| 628 | startRadius, |
---|
| 629 | endRadius |
---|
| 630 | ]); |
---|
| 631 | } |
---|
| 632 | } |
---|
| 633 | } |
---|
| 634 | |
---|
| 635 | this.startRadians += segmentRadians; |
---|
| 636 | } |
---|
| 637 | } |
---|
| 638 | |
---|
| 639 | // Turn off the transparency |
---|
| 640 | if (this.Get('chart.colors.alpha')) { |
---|
| 641 | this.context.globalAlpha = 1; |
---|
| 642 | } |
---|
| 643 | |
---|
| 644 | // Draw the title if any has been set |
---|
| 645 | if (this.Get('chart.title')) { |
---|
| 646 | RGraph.DrawTitle(this.canvas, |
---|
| 647 | this.Get('chart.title'), |
---|
| 648 | (this.canvas.height / 2) - this.radius, |
---|
| 649 | this.centerx, |
---|
| 650 | this.Get('chart.text.size') + 2); |
---|
| 651 | } |
---|
| 652 | } |
---|
| 653 | |
---|
| 654 | |
---|
| 655 | /** |
---|
| 656 | * Unsuprisingly, draws the labels |
---|
| 657 | */ |
---|
| 658 | RGraph.Rose.prototype.DrawLabels = function () |
---|
| 659 | { |
---|
| 660 | this.context.lineWidth = 1; |
---|
| 661 | var key = this.Get('chart.key'); |
---|
| 662 | |
---|
| 663 | if (key && key.length) { |
---|
| 664 | RGraph.DrawKey(this, key, this.Get('chart.colors')); |
---|
| 665 | } |
---|
| 666 | |
---|
| 667 | // Set the color to black |
---|
| 668 | this.context.fillStyle = 'black'; |
---|
| 669 | this.context.strokeStyle = 'black'; |
---|
| 670 | |
---|
| 671 | var r = this.radius - 10; |
---|
| 672 | var font_face = this.Get('chart.text.font'); |
---|
| 673 | var font_size = this.Get('chart.text.size'); |
---|
| 674 | var context = this.context; |
---|
| 675 | var axes = this.Get('chart.labels.axes').toLowerCase(); |
---|
| 676 | |
---|
| 677 | // Draw any labels |
---|
| 678 | |
---|
| 679 | if (typeof(this.Get('chart.labels')) == 'object' && this.Get('chart.labels')) { |
---|
| 680 | this.DrawCircularLabels(context, this.Get('chart.labels'), font_face, font_size, r + 10); |
---|
| 681 | } |
---|
| 682 | |
---|
| 683 | |
---|
| 684 | var color = 'rgba(255,255,255,0.8)'; |
---|
| 685 | |
---|
| 686 | // The "North" axis labels |
---|
| 687 | if (axes.indexOf('n') > -1) { |
---|
| 688 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - (r * 0.2), String(Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 689 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - (r * 0.4), String(Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 690 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - (r * 0.6), String(Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 691 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - (r * 0.8), String(Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 692 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - r, String(Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 693 | } |
---|
| 694 | |
---|
| 695 | // The "South" axis labels |
---|
| 696 | if (axes.indexOf('s') > -1) { |
---|
| 697 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + (r * 0.2), String(Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 698 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + (r * 0.4), String(Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 699 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + (r * 0.6), String(Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 700 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + (r * 0.8), String(Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 701 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + r, String(Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 702 | } |
---|
| 703 | |
---|
| 704 | // The "East" axis labels |
---|
| 705 | if (axes.indexOf('e') > -1) { |
---|
| 706 | RGraph.Text(context, font_face, font_size, this.centerx + (r * 0.2), this.centery, String(Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 707 | RGraph.Text(context, font_face, font_size, this.centerx + (r * 0.4), this.centery, String(Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 708 | RGraph.Text(context, font_face, font_size, this.centerx + (r * 0.6), this.centery, String(Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 709 | RGraph.Text(context, font_face, font_size, this.centerx + (r * 0.8), this.centery, String(Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 710 | RGraph.Text(context, font_face, font_size, this.centerx + r, this.centery, String(Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 711 | } |
---|
| 712 | |
---|
| 713 | // The "West" axis labels |
---|
| 714 | if (axes.indexOf('w') > -1) { |
---|
| 715 | RGraph.Text(context, font_face, font_size, this.centerx - (r * 0.2), this.centery, String(Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 716 | RGraph.Text(context, font_face, font_size, this.centerx - (r * 0.4), this.centery, String(Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 717 | RGraph.Text(context, font_face, font_size, this.centerx - (r * 0.6), this.centery, String(Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 718 | RGraph.Text(context, font_face, font_size, this.centerx - (r * 0.8), this.centery, String(Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 719 | RGraph.Text(context, font_face, font_size, this.centerx - r, this.centery, String(Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals'))), 'center', 'center', true, false, color); |
---|
| 720 | } |
---|
| 721 | |
---|
| 722 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery, typeof(this.Get('chart.ymin')) == 'number' ? String(Number(this.Get('chart.ymin')).toFixed(this.Get('chart.scale.decimals'))) : '0', 'center', 'center', true, false, color); |
---|
| 723 | } |
---|
| 724 | |
---|
| 725 | |
---|
| 726 | /** |
---|
| 727 | * Draws the circular labels that go around the charts |
---|
| 728 | * |
---|
| 729 | * @param labels array The labels that go around the chart |
---|
| 730 | */ |
---|
| 731 | RGraph.Rose.prototype.DrawCircularLabels = function (context, labels, font_face, font_size, r) |
---|
| 732 | { |
---|
| 733 | var variant = this.Get('chart.variant'); |
---|
| 734 | var position = this.Get('chart.labels.position'); |
---|
| 735 | var r = r + 10 + this.Get('chart.labels.offset'); |
---|
| 736 | |
---|
| 737 | for (var i=0; i<labels.length; ++i) { |
---|
| 738 | |
---|
| 739 | if (typeof(variant) == 'string' && variant == 'non-equi-angular') { |
---|
| 740 | |
---|
| 741 | var a = Number(this.angles[i][0]) + ((this.angles[i][1] - this.angles[i][0]) / 2); |
---|
| 742 | a -= 90; |
---|
| 743 | var halign = 'center'; // Default halign |
---|
| 744 | |
---|
| 745 | var x = Math.cos(a / 57.29577866666) * (r + 10); |
---|
| 746 | var y = Math.sin(a / 57.29577866666) * (r + 10); |
---|
| 747 | |
---|
| 748 | RGraph.Text(context, font_face, font_size, this.centerx + x, this.centery + y, String(labels[i]), 'center', halign); |
---|
| 749 | |
---|
| 750 | } else { |
---|
| 751 | |
---|
| 752 | var a = (360 / labels.length) * (i + 1) - (360 / (labels.length * 2)); |
---|
| 753 | var a = a - 90 + (this.Get('chart.labels.position') == 'edge' ? ((360 / labels.length) / 2) : 0); |
---|
| 754 | var halign = 'center'; // Default halign |
---|
| 755 | |
---|
| 756 | // Horizontal alignment |
---|
| 757 | //if (a == 0) { |
---|
| 758 | // var halign = 'left'; |
---|
| 759 | //} else if (a == 180) { |
---|
| 760 | // var halign = 'right'; |
---|
| 761 | //} |
---|
| 762 | |
---|
| 763 | var x = Math.cos(a / 57.29577866666) * (r + 10); |
---|
| 764 | var y = Math.sin(a / 57.29577866666) * (r + 10); |
---|
| 765 | |
---|
| 766 | RGraph.Text(context, font_face, font_size, this.centerx + x, this.centery + y, String(labels[i]), 'center', halign); |
---|
| 767 | } |
---|
| 768 | } |
---|
| 769 | } |
---|
| 770 | |
---|
| 771 | |
---|
| 772 | /** |
---|
| 773 | * This function is for use with circular graph types, eg the Pie or Rose. Pass it your event object |
---|
| 774 | * and it will pass you back the corresponding segment details as an array: |
---|
| 775 | * |
---|
| 776 | * [x, y, r, startAngle, endAngle] |
---|
| 777 | * |
---|
| 778 | * Angles are measured in degrees, and are measured from the "east" axis (just like the canvas). |
---|
| 779 | * |
---|
| 780 | * @param object e Your event object |
---|
| 781 | */ |
---|
| 782 | RGraph.Rose.prototype.getSegment = function (e) |
---|
| 783 | { |
---|
| 784 | RGraph.FixEventObject(e); |
---|
| 785 | |
---|
| 786 | // The optional arg provides a way of allowing some accuracy (pixels) |
---|
| 787 | var accuracy = arguments[1] ? arguments[1] : 0; |
---|
| 788 | |
---|
| 789 | var obj = e.target.__object__; |
---|
| 790 | var canvas = obj.canvas; |
---|
| 791 | var context = obj.context; |
---|
| 792 | var mouseCoords = RGraph.getMouseXY(e); |
---|
| 793 | var x = mouseCoords[0] - obj.centerx; |
---|
| 794 | var y = mouseCoords[1] - obj.centery; |
---|
| 795 | var r = obj.radius; |
---|
| 796 | var theta = Math.atan(y / x); // RADIANS |
---|
| 797 | var hyp = y / Math.sin(theta); |
---|
| 798 | var angles = obj.angles; |
---|
| 799 | var ret = []; |
---|
| 800 | var hyp = (hyp < 0) ? hyp + accuracy : hyp - accuracy; |
---|
| 801 | |
---|
| 802 | |
---|
| 803 | |
---|
| 804 | // Put theta in DEGREES |
---|
| 805 | theta *= 57.3 |
---|
| 806 | |
---|
| 807 | // hyp should not be greater than radius if it's a Rose chart |
---|
| 808 | if (obj.type == 'rose') { |
---|
| 809 | if ( (isNaN(hyp) && Math.abs(mouseCoords[0]) < (obj.centerx - r) ) |
---|
| 810 | || (isNaN(hyp) && Math.abs(mouseCoords[0]) > (obj.centerx + r)) |
---|
| 811 | || (!isNaN(hyp) && Math.abs(hyp) > r)) { |
---|
| 812 | return; |
---|
| 813 | } |
---|
| 814 | } |
---|
| 815 | |
---|
| 816 | /** |
---|
| 817 | * Account for the correct quadrant |
---|
| 818 | */ |
---|
| 819 | if (x < 0 && y >= 0) { |
---|
| 820 | theta += 180; |
---|
| 821 | } else if (x < 0 && y < 0) { |
---|
| 822 | theta += 180; |
---|
| 823 | } else if (x > 0 && y < 0) { |
---|
| 824 | theta += 360; |
---|
| 825 | } |
---|
| 826 | |
---|
| 827 | /** |
---|
| 828 | * Account for the rose chart angle displacement |
---|
| 829 | */ |
---|
| 830 | theta += 90; |
---|
| 831 | |
---|
| 832 | if (theta > 360) { |
---|
| 833 | theta -= 360; |
---|
| 834 | } |
---|
| 835 | |
---|
| 836 | hyp = Math.abs(hyp); |
---|
| 837 | |
---|
| 838 | for (var i=0; i<angles.length; ++i) { |
---|
| 839 | if (theta >= angles[i][0] && theta < angles[i][1] && hyp > angles[i][2] && hyp < angles[i][3]) { |
---|
| 840 | |
---|
| 841 | if (!(hyp > angles[i][2] && hyp < angles[i][3])) { |
---|
| 842 | return null; |
---|
| 843 | } |
---|
| 844 | |
---|
| 845 | if (!hyp) { |
---|
| 846 | return null; |
---|
| 847 | } |
---|
| 848 | |
---|
| 849 | ret[0] = obj.centerx; |
---|
| 850 | ret[1] = obj.centery; |
---|
| 851 | ret[2] = angles[i][2]; // Start angle |
---|
| 852 | ret[3] = angles[i][3]; // End angle |
---|
| 853 | |
---|
| 854 | ret[4] = angles[i][0]; // Start radius |
---|
| 855 | ret[5] = angles[i][1]; // End radius |
---|
| 856 | ret[6] = i; |
---|
| 857 | |
---|
| 858 | ret[4] -= 90; |
---|
| 859 | ret[5] -= 90; |
---|
| 860 | |
---|
| 861 | if (x > 0 && y < 0) { |
---|
| 862 | ret[4] += 360; |
---|
| 863 | ret[5] += 360; |
---|
| 864 | } |
---|
| 865 | |
---|
| 866 | if (ret[4] < 0) ret[4] += 360; |
---|
| 867 | if (ret[5] > 360) ret[5] -= 360; |
---|
| 868 | |
---|
| 869 | return ret; |
---|
| 870 | } |
---|
| 871 | } |
---|
| 872 | |
---|
| 873 | return null; |
---|
| 874 | } |
---|