[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 chart constuctor |
---|
| 19 | * |
---|
| 20 | * @param object canvas |
---|
| 21 | * @param array data |
---|
| 22 | */ |
---|
| 23 | RGraph.Rscatter = 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 = 'rscatter'; |
---|
| 31 | this.hasTooltips = false; |
---|
| 32 | this.isRGraph = true; |
---|
| 33 | |
---|
| 34 | |
---|
| 35 | /** |
---|
| 36 | * Compatibility with older browsers |
---|
| 37 | */ |
---|
| 38 | RGraph.OldBrowserCompat(this.context); |
---|
| 39 | |
---|
| 40 | |
---|
| 41 | this.centerx = 0; |
---|
| 42 | this.centery = 0; |
---|
| 43 | this.radius = 0; |
---|
| 44 | this.max = 0; |
---|
| 45 | |
---|
| 46 | this.properties = { |
---|
| 47 | 'chart.radius': null, |
---|
| 48 | 'chart.colors': [], // This is used internally for the key |
---|
| 49 | 'chart.colors.default': 'black', |
---|
| 50 | 'chart.gutter.left': 25, |
---|
| 51 | 'chart.gutter.right': 25, |
---|
| 52 | 'chart.gutter.top': 25, |
---|
| 53 | 'chart.gutter.bottom': 25, |
---|
| 54 | 'chart.title': '', |
---|
| 55 | 'chart.title.background': null, |
---|
| 56 | 'chart.title.hpos': null, |
---|
| 57 | 'chart.title.vpos': null, |
---|
| 58 | 'chart.labels': null, |
---|
| 59 | 'chart.labels.position': 'center', |
---|
| 60 | 'chart.labels.axes': 'nsew', |
---|
| 61 | 'chart.text.color': 'black', |
---|
| 62 | 'chart.text.font': 'Verdana', |
---|
| 63 | 'chart.text.size': 10, |
---|
| 64 | 'chart.key': null, |
---|
| 65 | 'chart.key.background': 'white', |
---|
| 66 | 'chart.key.position': 'graph', |
---|
| 67 | 'chart.key.halign': 'right', |
---|
| 68 | 'chart.key.shadow': false, |
---|
| 69 | 'chart.key.shadow.color': '#666', |
---|
| 70 | 'chart.key.shadow.blur': 3, |
---|
| 71 | 'chart.key.shadow.offsetx': 2, |
---|
| 72 | 'chart.key.shadow.offsety': 2, |
---|
| 73 | 'chart.key.position.gutter.boxed': true, |
---|
| 74 | 'chart.key.position.x': null, |
---|
| 75 | 'chart.key.position.y': null, |
---|
| 76 | 'chart.key.color.shape': 'square', |
---|
| 77 | 'chart.key.rounded': true, |
---|
| 78 | 'chart.key.linewidth': 1, |
---|
| 79 | 'chart.contextmenu': null, |
---|
| 80 | 'chart.tooltips.effect': 'fade', |
---|
| 81 | 'chart.tooltips.css.class': 'RGraph_tooltip', |
---|
| 82 | 'chart.tooltips.highlight': true, |
---|
| 83 | 'chart.tooltips.hotspot': 3, |
---|
| 84 | 'chart.annotatable': false, |
---|
| 85 | 'chart.annotate.color': 'black', |
---|
| 86 | 'chart.zoom.factor': 1.5, |
---|
| 87 | 'chart.zoom.fade.in': true, |
---|
| 88 | 'chart.zoom.fade.out': true, |
---|
| 89 | 'chart.zoom.hdir': 'right', |
---|
| 90 | 'chart.zoom.vdir': 'down', |
---|
| 91 | 'chart.zoom.frames': 10, |
---|
| 92 | 'chart.zoom.delay': 50, |
---|
| 93 | 'chart.zoom.shadow': true, |
---|
| 94 | 'chart.zoom.mode': 'canvas', |
---|
| 95 | 'chart.zoom.thumbnail.width': 75, |
---|
| 96 | 'chart.zoom.thumbnail.height': 75, |
---|
| 97 | 'chart.zoom.background': true, |
---|
| 98 | 'chart.zoom.action': 'zoom', |
---|
| 99 | 'chart.resizable': false, |
---|
| 100 | 'chart.resize.handle.adjust': [0,0], |
---|
| 101 | 'chart.resize.handle.background': null, |
---|
| 102 | 'chart.adjustable': false, |
---|
| 103 | 'chart.ymax': null, |
---|
| 104 | 'chart.ymin': 0, |
---|
| 105 | 'chart.tickmarks': 'cross', |
---|
| 106 | 'chart.ticksize': 3, |
---|
| 107 | 'chart.scale.decimals': null, |
---|
| 108 | 'chart.scale.round': false |
---|
| 109 | } |
---|
| 110 | } |
---|
| 111 | |
---|
| 112 | |
---|
| 113 | /** |
---|
| 114 | * A simple setter |
---|
| 115 | * |
---|
| 116 | * @param string name The name of the property to set |
---|
| 117 | * @param string value The value of the property |
---|
| 118 | */ |
---|
| 119 | RGraph.Rscatter.prototype.Set = function (name, value) |
---|
| 120 | { |
---|
| 121 | this.properties[name.toLowerCase()] = value; |
---|
| 122 | } |
---|
| 123 | |
---|
| 124 | |
---|
| 125 | /** |
---|
| 126 | * A simple getter |
---|
| 127 | * |
---|
| 128 | * @param string name The name of the property to get |
---|
| 129 | */ |
---|
| 130 | RGraph.Rscatter.prototype.Get = function (name) |
---|
| 131 | { |
---|
| 132 | return this.properties[name.toLowerCase()]; |
---|
| 133 | } |
---|
| 134 | |
---|
| 135 | |
---|
| 136 | /** |
---|
| 137 | * This method draws the rose chart |
---|
| 138 | */ |
---|
| 139 | RGraph.Rscatter.prototype.Draw = function () |
---|
| 140 | { |
---|
| 141 | /** |
---|
| 142 | * Fire the onbeforedraw event |
---|
| 143 | */ |
---|
| 144 | RGraph.FireCustomEvent(this, 'onbeforedraw'); |
---|
| 145 | |
---|
| 146 | /** |
---|
| 147 | * Clear all of this canvases event handlers (the ones installed by RGraph) |
---|
| 148 | */ |
---|
| 149 | RGraph.ClearEventListeners(this.id); |
---|
| 150 | |
---|
| 151 | |
---|
| 152 | /** |
---|
| 153 | * This doesn't affect the chart, but is used for compatibility |
---|
| 154 | */ |
---|
| 155 | this.gutterLeft = this.Get('chart.gutter.left'); |
---|
| 156 | this.gutterRight = this.Get('chart.gutter.right'); |
---|
| 157 | this.gutterTop = this.Get('chart.gutter.top'); |
---|
| 158 | this.gutterBottom = this.Get('chart.gutter.bottom'); |
---|
| 159 | |
---|
| 160 | // Calculate the radius |
---|
| 161 | this.radius = (Math.min(RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight, RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2); |
---|
| 162 | this.centerx = RGraph.GetWidth(this) / 2; |
---|
| 163 | this.centery = RGraph.GetHeight(this) / 2; |
---|
| 164 | this.coords = []; |
---|
| 165 | |
---|
| 166 | /** |
---|
| 167 | * If there's a user specified radius, use that |
---|
| 168 | */ |
---|
| 169 | if (typeof(this.Get('chart.radius')) == 'number') { |
---|
| 170 | this.radius = this.Get('chart.radius'); |
---|
| 171 | } |
---|
| 172 | |
---|
| 173 | /** |
---|
| 174 | * Work out the scale |
---|
| 175 | */ |
---|
| 176 | var max = this.Get('chart.ymax'); |
---|
| 177 | var min = this.Get('chart.ymin'); |
---|
| 178 | |
---|
| 179 | if (typeof(max) == 'number') { |
---|
| 180 | this.max = max; |
---|
| 181 | this.scale = [((max - min) * 0.2) + min,((max - min) * 0.4) + min,((max - min) * 0.6) + min,((max - min) * 0.8) + min,((max - min) * 1.0) + min,]; |
---|
| 182 | |
---|
| 183 | } else { |
---|
| 184 | for (var i=0; i<this.data.length; ++i) { |
---|
| 185 | this.max = Math.max(this.max, this.data[i][1]); |
---|
| 186 | } |
---|
| 187 | this.scale = RGraph.getScale(this.max, this); |
---|
| 188 | this.max = this.scale[4]; |
---|
| 189 | |
---|
| 190 | // Hmmmmmmmm |
---|
| 191 | if (String(this.scale[0]).indexOf('e') == -1) { |
---|
| 192 | this.scale[0] = Number(this.scale[0]).toFixed(this.Get('chart.scale.decimals')); |
---|
| 193 | this.scale[1] = Number(this.scale[1]).toFixed(this.Get('chart.scale.decimals')); |
---|
| 194 | this.scale[2] = Number(this.scale[2]).toFixed(this.Get('chart.scale.decimals')); |
---|
| 195 | this.scale[3] = Number(this.scale[3]).toFixed(this.Get('chart.scale.decimals')); |
---|
| 196 | this.scale[4] = Number(this.scale[4]).toFixed(this.Get('chart.scale.decimals')); |
---|
| 197 | } |
---|
| 198 | } |
---|
| 199 | |
---|
| 200 | /** |
---|
| 201 | * Change the centerx marginally if the key is defined |
---|
| 202 | */ |
---|
| 203 | if (this.Get('chart.key') && this.Get('chart.key').length > 0 && this.Get('chart.key').length >= 3) { |
---|
| 204 | this.centerx = this.centerx - this.Get('chart.gutter.right') + 5; |
---|
| 205 | } |
---|
| 206 | |
---|
| 207 | /** |
---|
| 208 | * Populate the colors array for the purposes of generating the key |
---|
| 209 | */ |
---|
| 210 | if (typeof(this.Get('chart.key')) == 'object' && RGraph.is_array(this.Get('chart.key')) && this.Get('chart.key')[0]) { |
---|
| 211 | for (var i=0; i<this.data.length; ++i) { |
---|
| 212 | if (this.data[i][2] && typeof(this.data[i][2]) == 'string') { |
---|
| 213 | this.Get('chart.colors').push(this.data[i][2]); |
---|
| 214 | } |
---|
| 215 | } |
---|
| 216 | } |
---|
| 217 | |
---|
| 218 | this.DrawBackground(); |
---|
| 219 | this.DrawRscatter(); |
---|
| 220 | this.DrawLabels(); |
---|
| 221 | |
---|
| 222 | /** |
---|
| 223 | * Setup the context menu if required |
---|
| 224 | */ |
---|
| 225 | if (this.Get('chart.contextmenu')) { |
---|
| 226 | RGraph.ShowContext(this); |
---|
| 227 | } |
---|
| 228 | |
---|
| 229 | /** |
---|
| 230 | * Tooltips |
---|
| 231 | */ |
---|
| 232 | if (this.hasTooltips) { |
---|
| 233 | |
---|
| 234 | /** |
---|
| 235 | * Register this object for redrawing |
---|
| 236 | */ |
---|
| 237 | RGraph.Register(this); |
---|
| 238 | |
---|
| 239 | /** |
---|
| 240 | * The onmousemove event |
---|
| 241 | */ |
---|
| 242 | var canvas_onmousemove_func = function (event) |
---|
| 243 | { |
---|
| 244 | event = RGraph.FixEventObject(event); |
---|
| 245 | |
---|
| 246 | var mouseCoords = RGraph.getMouseXY(event); |
---|
| 247 | var mouseX = mouseCoords[0]; |
---|
| 248 | var mouseY = mouseCoords[1]; |
---|
| 249 | var obj = event.target.__object__; |
---|
| 250 | var canvas = obj.canvas; |
---|
| 251 | var context = obj.context; |
---|
| 252 | var overHotspot = false; |
---|
| 253 | var offset = obj.Get('chart.tooltips.hotspot'); // This is how far the hotspot extends |
---|
| 254 | |
---|
| 255 | for (var i=0; i<obj.coords.length; ++i) { |
---|
| 256 | |
---|
| 257 | var xCoord = obj.coords[i][0]; |
---|
| 258 | var yCoord = obj.coords[i][1]; |
---|
| 259 | var tooltip = obj.coords[i][3]; |
---|
| 260 | |
---|
| 261 | if ( |
---|
| 262 | mouseX < (xCoord + offset) && |
---|
| 263 | mouseX > (xCoord - offset) && |
---|
| 264 | mouseY < (yCoord + offset) && |
---|
| 265 | mouseY > (yCoord - offset) && |
---|
| 266 | typeof(tooltip) == 'string' && |
---|
| 267 | tooltip.length > 0 |
---|
| 268 | ) { |
---|
| 269 | |
---|
| 270 | overHotspot = true; |
---|
| 271 | canvas.style.cursor = 'pointer'; |
---|
| 272 | |
---|
| 273 | if (!RGraph.Registry.Get('chart.tooltip') || RGraph.Registry.Get('chart.tooltip').__text__ != tooltip) { |
---|
| 274 | |
---|
| 275 | if (obj.Get('chart.tooltips.highlight')) { |
---|
| 276 | RGraph.Redraw(); |
---|
| 277 | } |
---|
| 278 | |
---|
| 279 | /** |
---|
| 280 | * Get the tooltip text |
---|
| 281 | */ |
---|
| 282 | if (typeof(tooltip) == 'function') { |
---|
| 283 | var text = String(tooltip(i)); |
---|
| 284 | |
---|
| 285 | } else { |
---|
| 286 | var text = String(tooltip); |
---|
| 287 | } |
---|
| 288 | |
---|
| 289 | RGraph.Tooltip(canvas, text, event.pageX + 5, event.pageY - 5, i); |
---|
| 290 | |
---|
| 291 | /** |
---|
| 292 | * Highlight the tickmark |
---|
| 293 | */ |
---|
| 294 | if (obj.Get('chart.tooltips.highlight')) { |
---|
| 295 | context.beginPath(); |
---|
| 296 | context.fillStyle = 'rgba(255,255,255,0.5)'; |
---|
| 297 | context.arc(xCoord, yCoord, 3, 0, 6.2830, 0); |
---|
| 298 | context.fill(); |
---|
| 299 | } |
---|
| 300 | } |
---|
| 301 | } |
---|
| 302 | } |
---|
| 303 | |
---|
| 304 | if (!overHotspot) { |
---|
| 305 | canvas.style.cursor = 'default'; |
---|
| 306 | } |
---|
| 307 | } |
---|
| 308 | this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false); |
---|
| 309 | RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func); |
---|
| 310 | } |
---|
| 311 | |
---|
| 312 | // Draw the title if any has been set |
---|
| 313 | if (this.Get('chart.title')) { |
---|
| 314 | RGraph.DrawTitle(this.canvas, |
---|
| 315 | this.Get('chart.title'), |
---|
| 316 | (this.canvas.height / 2) - this.radius - 5, |
---|
| 317 | this.centerx, |
---|
| 318 | this.Get('chart.text.size') + 2); |
---|
| 319 | } |
---|
| 320 | |
---|
| 321 | /** |
---|
| 322 | * If the canvas is annotatable, do install the event handlers |
---|
| 323 | */ |
---|
| 324 | if (this.Get('chart.annotatable')) { |
---|
| 325 | RGraph.Annotate(this); |
---|
| 326 | } |
---|
| 327 | |
---|
| 328 | /** |
---|
| 329 | * This bit shows the mini zoom window if requested |
---|
| 330 | */ |
---|
| 331 | if (this.Get('chart.zoom.mode') == 'thumbnail' || this.Get('chart.zoom.mode') == 'area') { |
---|
| 332 | RGraph.ShowZoomWindow(this); |
---|
| 333 | } |
---|
| 334 | |
---|
| 335 | |
---|
| 336 | /** |
---|
| 337 | * This function enables resizing |
---|
| 338 | */ |
---|
| 339 | if (this.Get('chart.resizable')) { |
---|
| 340 | RGraph.AllowResizing(this); |
---|
| 341 | } |
---|
| 342 | |
---|
| 343 | /** |
---|
| 344 | * Fire the RGraph ondraw event |
---|
| 345 | */ |
---|
| 346 | RGraph.FireCustomEvent(this, 'ondraw'); |
---|
| 347 | } |
---|
| 348 | |
---|
| 349 | /** |
---|
| 350 | * This method draws the rose charts background |
---|
| 351 | */ |
---|
| 352 | RGraph.Rscatter.prototype.DrawBackground = function () |
---|
| 353 | { |
---|
| 354 | this.context.lineWidth = 1; |
---|
| 355 | |
---|
| 356 | // Draw the background grey circles |
---|
| 357 | this.context.strokeStyle = '#ccc'; |
---|
| 358 | for (var i=15; i<this.radius - (document.all ? 5 : 0); i+=15) {// Radius must be greater than 0 for Opera to work |
---|
| 359 | //this.context.moveTo(this.centerx + i, this.centery); |
---|
| 360 | |
---|
| 361 | // Radius must be greater than 0 for Opera to work |
---|
| 362 | this.context.arc(this.centerx, this.centery, i, 0, (2 * Math.PI), 0); |
---|
| 363 | } |
---|
| 364 | this.context.stroke(); |
---|
| 365 | |
---|
| 366 | // Draw the background lines that go from the center outwards |
---|
| 367 | this.context.beginPath(); |
---|
| 368 | for (var i=15; i<360; i+=15) { |
---|
| 369 | |
---|
| 370 | // Radius must be greater than 0 for Opera to work |
---|
| 371 | this.context.arc(this.centerx, this.centery, this.radius, i / 57.3, (i + 0.01) / 57.3, 0); |
---|
| 372 | |
---|
| 373 | this.context.lineTo(this.centerx, this.centery); |
---|
| 374 | } |
---|
| 375 | this.context.stroke(); |
---|
| 376 | |
---|
| 377 | this.context.beginPath(); |
---|
| 378 | this.context.strokeStyle = 'black'; |
---|
| 379 | |
---|
| 380 | // Draw the X axis |
---|
| 381 | this.context.moveTo(this.centerx - this.radius, this.centery); |
---|
| 382 | this.context.lineTo(this.centerx + this.radius, this.centery); |
---|
| 383 | |
---|
| 384 | // Draw the X ends |
---|
| 385 | this.context.moveTo(this.centerx - this.radius, this.centery - 5); |
---|
| 386 | this.context.lineTo(this.centerx - this.radius, this.centery + 5); |
---|
| 387 | this.context.moveTo(this.centerx + this.radius, this.centery - 5); |
---|
| 388 | this.context.lineTo(this.centerx + this.radius, this.centery + 5); |
---|
| 389 | |
---|
| 390 | // Draw the X check marks |
---|
| 391 | for (var i=(this.centerx - this.radius); i<(this.centerx + this.radius); i+=20) { |
---|
| 392 | this.context.moveTo(i, this.centery - 3); |
---|
| 393 | this.context.lineTo(i, this.centery + 3); |
---|
| 394 | } |
---|
| 395 | |
---|
| 396 | // Draw the Y check marks |
---|
| 397 | for (var i=(this.centery - this.radius); i<(this.centery + this.radius); i+=20) { |
---|
| 398 | this.context.moveTo(this.centerx - 3, i); |
---|
| 399 | this.context.lineTo(this.centerx + 3, i); |
---|
| 400 | } |
---|
| 401 | |
---|
| 402 | // Draw the Y axis |
---|
| 403 | this.context.moveTo(this.centerx, this.centery - this.radius); |
---|
| 404 | this.context.lineTo(this.centerx, this.centery + this.radius); |
---|
| 405 | |
---|
| 406 | // Draw the Y ends |
---|
| 407 | this.context.moveTo(this.centerx - 5, this.centery - this.radius); |
---|
| 408 | this.context.lineTo(this.centerx + 5, this.centery - this.radius); |
---|
| 409 | |
---|
| 410 | this.context.moveTo(this.centerx - 5, this.centery + this.radius); |
---|
| 411 | this.context.lineTo(this.centerx + 5, this.centery + this.radius); |
---|
| 412 | |
---|
| 413 | // Stroke it |
---|
| 414 | this.context.closePath(); |
---|
| 415 | this.context.stroke(); |
---|
| 416 | } |
---|
| 417 | |
---|
| 418 | |
---|
| 419 | /** |
---|
| 420 | * This method draws a set of data on the graph |
---|
| 421 | */ |
---|
| 422 | RGraph.Rscatter.prototype.DrawRscatter = function () |
---|
| 423 | { |
---|
| 424 | var data = this.data; |
---|
| 425 | |
---|
| 426 | for (var i=0; i<data.length; ++i) { |
---|
| 427 | |
---|
| 428 | var d1 = data[i][0]; |
---|
| 429 | var d2 = data[i][1]; |
---|
| 430 | var a = d1 / (180 / Math.PI); // RADIANS |
---|
| 431 | var r = ( (d2 - this.Get('chart.ymin')) / (this.max - this.Get('chart.ymin')) ) * this.radius; |
---|
| 432 | var x = Math.sin(a) * r; |
---|
| 433 | var y = Math.cos(a) * r; |
---|
| 434 | var color = data[i][2] ? data[i][2] : this.Get('chart.colors.default'); |
---|
| 435 | var tooltip = data[i][3] ? data[i][3] : null; |
---|
| 436 | |
---|
| 437 | if (tooltip && tooltip.length) { |
---|
| 438 | this.hasTooltips = true; |
---|
| 439 | } |
---|
| 440 | |
---|
| 441 | /** |
---|
| 442 | * Account for the correct quadrant |
---|
| 443 | */ |
---|
| 444 | x = x + this.centerx; |
---|
| 445 | y = this.centery - y; |
---|
| 446 | |
---|
| 447 | |
---|
| 448 | this.DrawTick(x, y, color); |
---|
| 449 | |
---|
| 450 | // Populate the coords array with the coordinates and the tooltip |
---|
| 451 | this.coords.push([x, y, color, tooltip]); |
---|
| 452 | } |
---|
| 453 | } |
---|
| 454 | |
---|
| 455 | |
---|
| 456 | /** |
---|
| 457 | * Unsuprisingly, draws the labels |
---|
| 458 | */ |
---|
| 459 | RGraph.Rscatter.prototype.DrawLabels = function () |
---|
| 460 | { |
---|
| 461 | this.context.lineWidth = 1; |
---|
| 462 | var key = this.Get('chart.key'); |
---|
| 463 | |
---|
| 464 | // Set the color to black |
---|
| 465 | this.context.fillStyle = 'black'; |
---|
| 466 | this.context.strokeStyle = 'black'; |
---|
| 467 | |
---|
| 468 | var r = this.radius; |
---|
| 469 | var color = this.Get('chart.text.color'); |
---|
| 470 | var font_face = this.Get('chart.text.font'); |
---|
| 471 | var font_size = this.Get('chart.text.size'); |
---|
| 472 | var context = this.context; |
---|
| 473 | var axes = this.Get('chart.labels.axes').toLowerCase(); |
---|
| 474 | |
---|
| 475 | this.context.fillStyle = this.Get('chart.text.color'); |
---|
| 476 | |
---|
| 477 | // Draw any labels |
---|
| 478 | if (typeof(this.Get('chart.labels')) == 'object' && this.Get('chart.labels')) { |
---|
| 479 | this.DrawCircularLabels(context, this.Get('chart.labels'), font_face, font_size, r); |
---|
| 480 | } |
---|
| 481 | |
---|
| 482 | |
---|
| 483 | var color = 'rgba(255,255,255,0.8)'; |
---|
| 484 | |
---|
| 485 | // The "North" axis labels |
---|
| 486 | if (axes.indexOf('n') > -1) { |
---|
| 487 | RGraph.Text(context,font_face,font_size,this.centerx,this.centery - ((r) * 0.2),String(this.scale[0]),'center','center',true,false,color); |
---|
| 488 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - ((r) * 0.4), String(this.scale[1]), 'center', 'center', true, false, color); |
---|
| 489 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - ((r) * 0.6), String(this.scale[2]), 'center', 'center', true, false, color); |
---|
| 490 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - ((r) * 0.8), String(this.scale[3]), 'center', 'center', true, false, color); |
---|
| 491 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery - r, String(this.scale[4]), 'center', 'center', true, false, color); |
---|
| 492 | } |
---|
| 493 | |
---|
| 494 | // The "South" axis labels |
---|
| 495 | if (axes.indexOf('s') > -1) { |
---|
| 496 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + ((r) * 0.2), String(this.scale[0]), 'center', 'center', true, false, color); |
---|
| 497 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + ((r) * 0.4), String(this.scale[1]), 'center', 'center', true, false, color); |
---|
| 498 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + ((r) * 0.6), String(this.scale[2]), 'center', 'center', true, false, color); |
---|
| 499 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + ((r) * 0.8), String(this.scale[3]), 'center', 'center', true, false, color); |
---|
| 500 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery + r, String(this.scale[4]), 'center', 'center', true, false, color); |
---|
| 501 | } |
---|
| 502 | |
---|
| 503 | // The "East" axis labels |
---|
| 504 | if (axes.indexOf('e') > -1) { |
---|
| 505 | RGraph.Text(context, font_face, font_size, this.centerx + ((r) * 0.2), this.centery, String(this.scale[0]), 'center', 'center', true, false, color); |
---|
| 506 | RGraph.Text(context, font_face, font_size, this.centerx + ((r) * 0.4), this.centery, String(this.scale[1]), 'center', 'center', true, false, color); |
---|
| 507 | RGraph.Text(context, font_face, font_size, this.centerx + ((r) * 0.6), this.centery, String(this.scale[2]), 'center', 'center', true, false, color); |
---|
| 508 | RGraph.Text(context, font_face, font_size, this.centerx + ((r) * 0.8), this.centery, String(this.scale[3]), 'center', 'center', true, false, color); |
---|
| 509 | RGraph.Text(context, font_face, font_size, this.centerx + r, this.centery, String(this.scale[4]), 'center', 'center', true, false, color); |
---|
| 510 | } |
---|
| 511 | |
---|
| 512 | // The "West" axis labels |
---|
| 513 | if (axes.indexOf('w') > -1) { |
---|
| 514 | RGraph.Text(context, font_face, font_size, this.centerx - ((r) * 0.2), this.centery, String(this.scale[0]), 'center', 'center', true, false, color); |
---|
| 515 | RGraph.Text(context, font_face, font_size, this.centerx - ((r) * 0.4), this.centery, String(this.scale[1]), 'center', 'center', true, false, color); |
---|
| 516 | RGraph.Text(context, font_face, font_size, this.centerx - ((r) * 0.6), this.centery, String(this.scale[2]), 'center', 'center', true, false, color); |
---|
| 517 | RGraph.Text(context, font_face, font_size, this.centerx - ((r) * 0.8), this.centery, String(this.scale[3]), 'center', 'center', true, false, color); |
---|
| 518 | RGraph.Text(context, font_face, font_size, this.centerx - r, this.centery, String(this.scale[4]), 'center', 'center', true, false, color); |
---|
| 519 | } |
---|
| 520 | |
---|
| 521 | // Draw the center minimum value (but only if there's at least one axes labels stipulated) |
---|
| 522 | if (this.Get('chart.labels.axes').length > 0) { |
---|
| 523 | RGraph.Text(context, font_face, font_size, this.centerx, this.centery, this.Get('chart.ymin') > 0 ? String(this.Get('chart.ymin').toFixed(this.Get('chart.scale.decimals'))) : '0', 'center', 'center', true, false, color); |
---|
| 524 | } |
---|
| 525 | |
---|
| 526 | /** |
---|
| 527 | * Draw the key |
---|
| 528 | */ |
---|
| 529 | if (key && key.length) { |
---|
| 530 | RGraph.DrawKey(this, key, this.Get('chart.colors')); |
---|
| 531 | } |
---|
| 532 | } |
---|
| 533 | |
---|
| 534 | |
---|
| 535 | /** |
---|
| 536 | * Draws the circular labels that go around the charts |
---|
| 537 | * |
---|
| 538 | * @param labels array The labels that go around the chart |
---|
| 539 | */ |
---|
| 540 | RGraph.Rscatter.prototype.DrawCircularLabels = function (context, labels, font_face, font_size, r) |
---|
| 541 | { |
---|
| 542 | var position = this.Get('chart.labels.position'); |
---|
| 543 | var r = r + 10; |
---|
| 544 | |
---|
| 545 | for (var i=0; i<labels.length; ++i) { |
---|
| 546 | |
---|
| 547 | |
---|
| 548 | var a = (360 / labels.length) * (i + 1) - (360 / (labels.length * 2)); |
---|
| 549 | var a = a - 90 + (this.Get('chart.labels.position') == 'edge' ? ((360 / labels.length) / 2) : 0); |
---|
| 550 | |
---|
| 551 | var x = Math.cos(a / 57.29577866666) * (r + 10); |
---|
| 552 | var y = Math.sin(a / 57.29577866666) * (r + 10); |
---|
| 553 | |
---|
| 554 | RGraph.Text(context, font_face, font_size, this.centerx + x, this.centery + y, String(labels[i]), 'center', 'center'); |
---|
| 555 | } |
---|
| 556 | } |
---|
| 557 | |
---|
| 558 | |
---|
| 559 | /** |
---|
| 560 | * Draws a single tickmark |
---|
| 561 | */ |
---|
| 562 | RGraph.Rscatter.prototype.DrawTick = function (x, y, color) |
---|
| 563 | { |
---|
| 564 | var tickmarks = this.Get('chart.tickmarks'); |
---|
| 565 | var ticksize = this.Get('chart.ticksize'); |
---|
| 566 | |
---|
| 567 | this.context.strokeStyle = color; |
---|
| 568 | this.context.fillStyle = color; |
---|
| 569 | |
---|
| 570 | // Cross |
---|
| 571 | if (tickmarks == 'cross') { |
---|
| 572 | |
---|
| 573 | this.context.beginPath(); |
---|
| 574 | this.context.moveTo(x + ticksize, y + ticksize); |
---|
| 575 | this.context.lineTo(x - ticksize, y - ticksize); |
---|
| 576 | this.context.stroke(); |
---|
| 577 | |
---|
| 578 | this.context.beginPath(); |
---|
| 579 | this.context.moveTo(x - ticksize, y + ticksize); |
---|
| 580 | this.context.lineTo(x + ticksize, y - ticksize); |
---|
| 581 | this.context.stroke(); |
---|
| 582 | |
---|
| 583 | // Circle |
---|
| 584 | } else if (tickmarks == 'circle') { |
---|
| 585 | |
---|
| 586 | this.context.beginPath(); |
---|
| 587 | this.context.arc(x, y, ticksize, 0, 6.2830, false); |
---|
| 588 | this.context.fill(); |
---|
| 589 | |
---|
| 590 | // Square |
---|
| 591 | } else if (tickmarks == 'square') { |
---|
| 592 | |
---|
| 593 | this.context.beginPath(); |
---|
| 594 | this.context.fillRect(x - ticksize, y - ticksize, 2 * ticksize, 2 * ticksize); |
---|
| 595 | this.context.fill(); |
---|
| 596 | |
---|
| 597 | // Diamond shape tickmarks |
---|
| 598 | } else if (tickmarks == 'diamond') { |
---|
| 599 | |
---|
| 600 | this.context.beginPath(); |
---|
| 601 | this.context.moveTo(x, y - ticksize); |
---|
| 602 | this.context.lineTo(x + ticksize, y); |
---|
| 603 | this.context.lineTo(x, y + ticksize); |
---|
| 604 | this.context.lineTo(x - ticksize, y); |
---|
| 605 | this.context.closePath(); |
---|
| 606 | this.context.fill(); |
---|
| 607 | |
---|
| 608 | // Plus style tickmarks |
---|
| 609 | } else if (tickmarks == 'plus') { |
---|
| 610 | |
---|
| 611 | this.context.lineWidth = 1; |
---|
| 612 | |
---|
| 613 | this.context.beginPath(); |
---|
| 614 | this.context.moveTo(x, y - ticksize); |
---|
| 615 | this.context.lineTo(x, y + ticksize); |
---|
| 616 | this.context.moveTo(x - ticksize, y); |
---|
| 617 | this.context.lineTo(x + ticksize, y); |
---|
| 618 | this.context.stroke(); |
---|
| 619 | } |
---|
| 620 | } |
---|