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1 /** 2 * jqPlot 3 * Pure JavaScript plotting plugin using jQuery 4 * 5 * Version: 1.0.2 6 * Revision: 1108 7 * 8 * Copyright (c) 2009-2011 Chris Leonello 9 * jqPlot is currently available for use in all personal or commercial projects 10 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 11 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 12 * choose the license that best suits your project and use it accordingly. 13 * 14 * Although not required, the author would appreciate an email letting him 15 * know of any substantial use of jqPlot. You can reach the author at: 16 * chris at jqplot dot com or see http://www.jqplot.com/info.php . 17 * 18 * If you are feeling kind and generous, consider supporting the project by 19 * making a donation at: http://www.jqplot.com/donate.php . 20 * 21 * sprintf functions contained in jqplot.sprintf.js by Ash Searle: 22 * 23 * version 2007.04.27 24 * author Ash Searle 25 * http://hexmen.com/blog/2007/03/printf-sprintf/ 26 * http://hexmen.com/js/sprintf.js 27 * The author (Ash Searle) has placed this code in the public domain: 28 * "This code is unrestricted: you are free to use it however you like." 29 * 30 */ 31 (function($) { 32 // Class: $.jqplot.CanvasGridRenderer 33 // The default jqPlot grid renderer, creating a grid on a canvas element. 34 // The renderer has no additional options beyond the <Grid> class. 35 $.jqplot.PyramidGridRenderer = function(){ 36 $.jqplot.CanvasGridRenderer.call(this); 37 }; 38 39 $.jqplot.PyramidGridRenderer.prototype = new $.jqplot.CanvasGridRenderer(); 40 $.jqplot.PyramidGridRenderer.prototype.constructor = $.jqplot.PyramidGridRenderer; 41 42 // called with context of Grid object 43 $.jqplot.CanvasGridRenderer.prototype.init = function(options) { 44 this._ctx; 45 this.plotBands = { 46 show: false, 47 color: 'rgb(230, 219, 179)', 48 axis: 'y', 49 start: null, 50 interval: 10 51 }; 52 $.extend(true, this, options); 53 // set the shadow renderer options 54 var sopts = {lineJoin:'miter', lineCap:'round', fill:false, isarc:false, angle:this.shadowAngle, offset:this.shadowOffset, alpha:this.shadowAlpha, depth:this.shadowDepth, lineWidth:this.shadowWidth, closePath:false, strokeStyle:this.shadowColor}; 55 this.renderer.shadowRenderer.init(sopts); 56 }; 57 58 $.jqplot.PyramidGridRenderer.prototype.draw = function() { 59 this._ctx = this._elem.get(0).getContext("2d"); 60 var ctx = this._ctx; 61 var axes = this._axes; 62 var xp = axes.xaxis.u2p; 63 var yp = axes.yMidAxis.u2p; 64 var xnudge = axes.xaxis.max/1000.0; 65 var xp0 = xp(0); 66 var xpn = xp(xnudge); 67 var ax = ['xaxis', 'yaxis', 'x2axis', 'y2axis','yMidAxis']; 68 // Add the grid onto the grid canvas. This is the bottom most layer. 69 ctx.save(); 70 ctx.clearRect(0, 0, this._plotDimensions.width, this._plotDimensions.height); 71 ctx.fillStyle = this.backgroundColor || this.background; 72 73 ctx.fillRect(this._left, this._top, this._width, this._height); 74 75 if (this.plotBands.show) { 76 ctx.save(); 77 var pb = this.plotBands; 78 ctx.fillStyle = pb.color; 79 var axis; 80 var x, y, w, h; 81 // find axis to work with 82 if (pb.axis.charAt(0) === 'x') { 83 if (axes.xaxis.show) { 84 axis = axes.xaxis; 85 } 86 } 87 else if (pb.axis.charAt(0) === 'y') { 88 if (axes.yaxis.show) { 89 axis = axes.yaxis; 90 } 91 else if (axes.y2axis.show) { 92 axis = axes.y2axis; 93 } 94 else if (axes.yMidAxis.show) { 95 axis = axes.yMidAxis; 96 } 97 } 98 99 if (axis !== undefined) { 100 // draw some rectangles 101 var start = pb.start; 102 if (start === null) { 103 start = axis.min; 104 } 105 for (var i = start; i < axis.max; i += 2 * pb.interval) { 106 if (axis.name.charAt(0) === 'y') { 107 x = this._left; 108 if ((i + pb.interval) < axis.max) { 109 y = axis.series_u2p(i + pb.interval) + this._top; 110 } 111 else { 112 y = axis.series_u2p(axis.max) + this._top; 113 } 114 w = this._right - this._left; 115 h = axis.series_u2p(start) - axis.series_u2p(start + pb.interval); 116 ctx.fillRect(x, y, w, h); 117 } 118 // else { 119 // y = 0; 120 // x = axis.series_u2p(i); 121 // h = this._height; 122 // w = axis.series_u2p(start + pb.interval) - axis.series_u2p(start); 123 // } 124 125 } 126 } 127 ctx.restore(); 128 } 129 130 ctx.save(); 131 ctx.lineJoin = 'miter'; 132 ctx.lineCap = 'butt'; 133 ctx.lineWidth = this.gridLineWidth; 134 ctx.strokeStyle = this.gridLineColor; 135 var b, e, s, m; 136 for (var i=5; i>0; i--) { 137 var name = ax[i-1]; 138 var axis = axes[name]; 139 var ticks = axis._ticks; 140 var numticks = ticks.length; 141 if (axis.show) { 142 if (axis.drawBaseline) { 143 var bopts = {}; 144 if (axis.baselineWidth !== null) { 145 bopts.lineWidth = axis.baselineWidth; 146 } 147 if (axis.baselineColor !== null) { 148 bopts.strokeStyle = axis.baselineColor; 149 } 150 switch (name) { 151 case 'xaxis': 152 if (axes.yMidAxis.show) { 153 drawLine (this._left, this._bottom, xp0, this._bottom, bopts); 154 drawLine (xpn, this._bottom, this._right, this._bottom, bopts); 155 } 156 else { 157 drawLine (this._left, this._bottom, this._right, this._bottom, bopts); 158 } 159 break; 160 case 'yaxis': 161 drawLine (this._left, this._bottom, this._left, this._top, bopts); 162 break; 163 case 'yMidAxis': 164 drawLine(xp0, this._bottom, xp0, this._top, bopts); 165 drawLine(xpn, this._bottom, xpn, this._top, bopts); 166 break; 167 case 'x2axis': 168 if (axes.yMidAxis.show) { 169 drawLine (this._left, this._top, xp0, this._top, bopts); 170 drawLine (xpn, this._top, this._right, this._top, bopts); 171 } 172 else { 173 drawLine (this._left, this._bottom, this._right, this._bottom, bopts); 174 } 175 break; 176 case 'y2axis': 177 drawLine (this._right, this._bottom, this._right, this._top, bopts); 178 break; 179 180 } 181 } 182 for (var j=numticks; j>0; j--) { 183 var t = ticks[j-1]; 184 if (t.show) { 185 var pos = Math.round(axis.u2p(t.value)) + 0.5; 186 switch (name) { 187 case 'xaxis': 188 // draw the grid line if we should 189 if (t.showGridline && this.drawGridlines && (!t.isMinorTick || axis.showMinorTicks)) { 190 drawLine(pos, this._top, pos, this._bottom); 191 } 192 193 // draw the mark 194 if (t.showMark && t.mark && (!t.isMinorTick || axis.showMinorTicks)) { 195 s = t.markSize; 196 m = t.mark; 197 var pos = Math.round(axis.u2p(t.value)) + 0.5; 198 switch (m) { 199 case 'outside': 200 b = this._bottom; 201 e = this._bottom+s; 202 break; 203 case 'inside': 204 b = this._bottom-s; 205 e = this._bottom; 206 break; 207 case 'cross': 208 b = this._bottom-s; 209 e = this._bottom+s; 210 break; 211 default: 212 b = this._bottom; 213 e = this._bottom+s; 214 break; 215 } 216 // draw the shadow 217 if (this.shadow) { 218 this.renderer.shadowRenderer.draw(ctx, [[pos,b],[pos,e]], {lineCap:'butt', lineWidth:this.gridLineWidth, offset:this.gridLineWidth*0.75, depth:2, fill:false, closePath:false}); 219 } 220 // draw the line 221 drawLine(pos, b, pos, e); 222 } 223 break; 224 case 'yaxis': 225 // draw the grid line 226 if (t.showGridline && this.drawGridlines && (!t.isMinorTick || axis.showMinorTicks)) { 227 drawLine(this._right, pos, this._left, pos); 228 } 229 230 // draw the mark 231 if (t.showMark && t.mark && (!t.isMinorTick || axis.showMinorTicks)) { 232 s = t.markSize; 233 m = t.mark; 234 var pos = Math.round(axis.u2p(t.value)) + 0.5; 235 switch (m) { 236 case 'outside': 237 b = this._left-s; 238 e = this._left; 239 break; 240 case 'inside': 241 b = this._left; 242 e = this._left+s; 243 break; 244 case 'cross': 245 b = this._left-s; 246 e = this._left+s; 247 break; 248 default: 249 b = this._left-s; 250 e = this._left; 251 break; 252 } 253 // draw the shadow 254 if (this.shadow) { 255 this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false}); 256 } 257 drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor}); 258 } 259 break; 260 case 'yMidAxis': 261 // draw the grid line 262 if (t.showGridline && this.drawGridlines && (!t.isMinorTick || axis.showMinorTicks)) { 263 drawLine(this._left, pos, xp0, pos); 264 drawLine(xpn, pos, this._right, pos); 265 } 266 // draw the mark 267 if (t.showMark && t.mark && (!t.isMinorTick || axis.showMinorTicks)) { 268 s = t.markSize; 269 m = t.mark; 270 var pos = Math.round(axis.u2p(t.value)) + 0.5; 271 272 b = xp0; 273 e = xp0 + s; 274 // draw the shadow 275 if (this.shadow) { 276 this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false}); 277 } 278 drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor}); 279 280 b = xpn - s; 281 e = xpn; 282 // draw the shadow 283 if (this.shadow) { 284 this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false}); 285 } 286 drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor}); 287 } 288 break; 289 case 'x2axis': 290 // draw the grid line 291 if (t.showGridline && this.drawGridlines && (!t.isMinorTick || axis.showMinorTicks)) { 292 drawLine(pos, this._bottom, pos, this._top); 293 } 294 295 // draw the mark 296 if (t.showMark && t.mark && (!t.isMinorTick || axis.showMinorTicks)) { 297 s = t.markSize; 298 m = t.mark; 299 var pos = Math.round(axis.u2p(t.value)) + 0.5; 300 switch (m) { 301 case 'outside': 302 b = this._top-s; 303 e = this._top; 304 break; 305 case 'inside': 306 b = this._top; 307 e = this._top+s; 308 break; 309 case 'cross': 310 b = this._top-s; 311 e = this._top+s; 312 break; 313 default: 314 b = this._top-s; 315 e = this._top; 316 break; 317 } 318 // draw the shadow 319 if (this.shadow) { 320 this.renderer.shadowRenderer.draw(ctx, [[pos,b],[pos,e]], {lineCap:'butt', lineWidth:this.gridLineWidth, offset:this.gridLineWidth*0.75, depth:2, fill:false, closePath:false}); 321 } 322 drawLine(pos, b, pos, e); 323 } 324 break; 325 case 'y2axis': 326 // draw the grid line 327 if (t.showGridline && this.drawGridlines && (!t.isMinorTick || axis.showMinorTicks)) { 328 drawLine(this._left, pos, this._right, pos); 329 } 330 331 // draw the mark 332 if (t.showMark && t.mark && (!t.isMinorTick || axis.showMinorTicks)) { 333 s = t.markSize; 334 m = t.mark; 335 var pos = Math.round(axis.u2p(t.value)) + 0.5; 336 switch (m) { 337 case 'outside': 338 b = this._right; 339 e = this._right+s; 340 break; 341 case 'inside': 342 b = this._right-s; 343 e = this._right; 344 break; 345 case 'cross': 346 b = this._right-s; 347 e = this._right+s; 348 break; 349 default: 350 b = this._right; 351 e = this._right+s; 352 break; 353 } 354 // draw the shadow 355 if (this.shadow) { 356 this.renderer.shadowRenderer.draw(ctx, [[b, pos], [e, pos]], {lineCap:'butt', lineWidth:this.gridLineWidth*1.5, offset:this.gridLineWidth*0.75, fill:false, closePath:false}); 357 } 358 drawLine(b, pos, e, pos, {strokeStyle:axis.borderColor}); 359 } 360 break; 361 default: 362 break; 363 } 364 } 365 } 366 t = null; 367 } 368 axis = null; 369 ticks = null; 370 } 371 372 ctx.restore(); 373 374 function drawLine(bx, by, ex, ey, opts) { 375 ctx.save(); 376 opts = opts || {}; 377 if (opts.lineWidth == null || opts.lineWidth != 0){ 378 $.extend(true, ctx, opts); 379 ctx.beginPath(); 380 ctx.moveTo(bx, by); 381 ctx.lineTo(ex, ey); 382 ctx.stroke(); 383 } 384 ctx.restore(); 385 } 386 387 if (this.shadow) { 388 if (axes.yMidAxis.show) { 389 var points = [[this._left, this._bottom], [xp0, this._bottom]]; 390 this.renderer.shadowRenderer.draw(ctx, points); 391 var points = [[xpn, this._bottom], [this._right, this._bottom], [this._right, this._top]]; 392 this.renderer.shadowRenderer.draw(ctx, points); 393 var points = [[xp0, this._bottom], [xp0, this._top]]; 394 this.renderer.shadowRenderer.draw(ctx, points); 395 } 396 else { 397 var points = [[this._left, this._bottom], [this._right, this._bottom], [this._right, this._top]]; 398 this.renderer.shadowRenderer.draw(ctx, points); 399 } 400 } 401 // Now draw border around grid. Use axis border definitions. start at 402 // upper left and go clockwise. 403 if (this.borderWidth != 0 && this.drawBorder) { 404 if (axes.yMidAxis.show) { 405 drawLine (this._left, this._top, xp0, this._top, {lineCap:'round', strokeStyle:axes.x2axis.borderColor, lineWidth:axes.x2axis.borderWidth}); 406 drawLine (xpn, this._top, this._right, this._top, {lineCap:'round', strokeStyle:axes.x2axis.borderColor, lineWidth:axes.x2axis.borderWidth}); 407 drawLine (this._right, this._top, this._right, this._bottom, {lineCap:'round', strokeStyle:axes.y2axis.borderColor, lineWidth:axes.y2axis.borderWidth}); 408 drawLine (this._right, this._bottom, xpn, this._bottom, {lineCap:'round', strokeStyle:axes.xaxis.borderColor, lineWidth:axes.xaxis.borderWidth}); 409 drawLine (xp0, this._bottom, this._left, this._bottom, {lineCap:'round', strokeStyle:axes.xaxis.borderColor, lineWidth:axes.xaxis.borderWidth}); 410 drawLine (this._left, this._bottom, this._left, this._top, {lineCap:'round', strokeStyle:axes.yaxis.borderColor, lineWidth:axes.yaxis.borderWidth}); 411 drawLine (xp0, this._bottom, xp0, this._top, {lineCap:'round', strokeStyle:axes.yaxis.borderColor, lineWidth:axes.yaxis.borderWidth}); 412 drawLine (xpn, this._bottom, xpn, this._top, {lineCap:'round', strokeStyle:axes.yaxis.borderColor, lineWidth:axes.yaxis.borderWidth}); 413 } 414 else { 415 drawLine (this._left, this._top, this._right, this._top, {lineCap:'round', strokeStyle:axes.x2axis.borderColor, lineWidth:axes.x2axis.borderWidth}); 416 drawLine (this._right, this._top, this._right, this._bottom, {lineCap:'round', strokeStyle:axes.y2axis.borderColor, lineWidth:axes.y2axis.borderWidth}); 417 drawLine (this._right, this._bottom, this._left, this._bottom, {lineCap:'round', strokeStyle:axes.xaxis.borderColor, lineWidth:axes.xaxis.borderWidth}); 418 drawLine (this._left, this._bottom, this._left, this._top, {lineCap:'round', strokeStyle:axes.yaxis.borderColor, lineWidth:axes.yaxis.borderWidth}); 419 } 420 } 421 // ctx.lineWidth = this.borderWidth; 422 // ctx.strokeStyle = this.borderColor; 423 // ctx.strokeRect(this._left, this._top, this._width, this._height); 424 425 ctx.restore(); 426 ctx = null; 427 axes = null; 428 }; 429 })(jQuery);
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