| blob | 6124cbad276499047dbe2158dfab1480aa48da00 |
1 /**
2 * jqPlot
3 * Pure JavaScript plotting plugin using jQuery
4 *
5 * Version: 1.0.4
6 * Revision: 1121
7 *
8 * Copyright (c) 2009-2012 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 };
39 $.jqplot.PyramidGridRenderer.prototype = new $.jqplot.CanvasGridRenderer();
40 $.jqplot.PyramidGridRenderer.prototype.constructor = $.jqplot.PyramidGridRenderer;
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 };
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;
73 ctx.fillRect(this._left, this._top, this._width, this._height);
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 }
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 // }
125 }
126 }
127 ctx.restore();
128 }
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;
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 }
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 }
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;
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});
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 }
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 }
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 }
372 ctx.restore();
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 }
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);
425 ctx.restore();
426 ctx = null;
427 axes = null;
428 };
429 })(jQuery);