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source: branches/HiveStatistics/sources/packages/jqPlot.1.0.0/content/Scripts/jqPlot/plugins/jqplot.mekkoAxisRenderer.js @ 9617

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Last change on this file since 9617 was 9617, checked in by pfleck, 11 years ago
#2063: Started integrating Hive statistics into statistics web project. Added jqPlot library for charting.
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1	/**
2	* jqPlot
3	* Pure JavaScript plotting plugin using jQuery
4	*
5	* Version: 1.0.0b2_r1012
6	*
7	* Copyright (c) 2009-2011 Chris Leonello
8	* jqPlot is currently available for use in all personal or commercial projects
9	* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
10	* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
11	* choose the license that best suits your project and use it accordingly.
12	*
13	* Although not required, the author would appreciate an email letting him
14	* know of any substantial use of jqPlot. You can reach the author at:
15	* chris at jqplot dot com or see http://www.jqplot.com/info.php .
16	*
17	* If you are feeling kind and generous, consider supporting the project by
18	* making a donation at: http://www.jqplot.com/donate.php .
19	*
20	* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
21	*
22	* version 2007.04.27
23	* author Ash Searle
24	* http://hexmen.com/blog/2007/03/printf-sprintf/
25	* http://hexmen.com/js/sprintf.js
26	* The author (Ash Searle) has placed this code in the public domain:
27	* "This code is unrestricted: you are free to use it however you like."
28	*
29	*/
30	(function($) {
31	// class: $.jqplot.MekkoAxisRenderer
32	// An axis renderer for a Mekko chart.
33	// Should be used with a Mekko chart where the mekkoRenderer is used on the series.
34	// Displays the Y axis as a range from 0 to 1 (0 to 100%) and the x axis with a tick
35	// for each series scaled to the sum of all the y values.
36	$.jqplot.MekkoAxisRenderer = function() {
37	};
38
39	// called with scope of axis object.
40	$.jqplot.MekkoAxisRenderer.prototype.init = function(options){
41	// prop: tickMode
42	// How to space the ticks on the axis.
43	// 'bar' will place a tick at the width of each bar.
44	// This is the default for the x axis.
45	// 'even' will place ticks at even intervals. This is
46	// the default for x2 axis and y axis. y axis cannot be changed.
47	this.tickMode;
48	// prop: barLabelRenderer
49	// renderer to use to draw labels under each bar.
50	this.barLabelRenderer = $.jqplot.AxisLabelRenderer;
51	// prop: barLabels
52	// array of labels to put under each bar.
53	this.barLabels = this.barLabels \|\| [];
54	// prop: barLabelOptions
55	// options object to pass to the bar label renderer.
56	this.barLabelOptions = {};
57	this.tickOptions = $.extend(true, {showGridline:false}, this.tickOptions);
58	this._barLabels = [];
59	$.extend(true, this, options);
60	if (this.name == 'yaxis') {
61	this.tickOptions.formatString = this.tickOptions.formatString \|\| "%d\%";
62	}
63	var db = this._dataBounds;
64	db.min = 0;
65	// for y axes, scale always go from 0 to 1 (0 to 100%)
66	if (this.name == 'yaxis' \|\| this.name == 'y2axis') {
67	db.max = 100;
68	this.tickMode = 'even';
69	}
70	// For x axes, scale goes from 0 to sum of all y values.
71	else if (this.name == 'xaxis'){
72	this.tickMode = (this.tickMode == null) ? 'bar' : this.tickMode;
73	for (var i=0; i<this._series.length; i++) {
74	db.max += this._series[i]._sumy;
75	}
76	}
77	else if (this.name == 'x2axis'){
78	this.tickMode = (this.tickMode == null) ? 'even' : this.tickMode;
79	for (var i=0; i<this._series.length; i++) {
80	db.max += this._series[i]._sumy;
81	}
82	}
83	};
84
85	// called with scope of axis
86	$.jqplot.MekkoAxisRenderer.prototype.draw = function(ctx, plot) {
87	if (this.show) {
88	// populate the axis label and value properties.
89	// createTicks is a method on the renderer, but
90	// call it within the scope of the axis.
91	this.renderer.createTicks.call(this);
92	// fill a div with axes labels in the right direction.
93	// Need to pregenerate each axis to get it's bounds and
94	// position it and the labels correctly on the plot.
95	var dim=0;
96	var temp;
97
98	var elem = document.createElement('div');
99	this._elem = $(elem);
100	this._elem.addClass('jqplot-axis jqplot-'+this.name);
101	this._elem.css('position', 'absolute');
102	elem = null;
103
104	if (this.name == 'xaxis' \|\| this.name == 'x2axis') {
105	this._elem.width(this._plotDimensions.width);
106	}
107	else {
108	this._elem.height(this._plotDimensions.height);
109	}
110
111	// draw the axis label
112	// create a _label object.
113	this.labelOptions.axis = this.name;
114	this._label = new this.labelRenderer(this.labelOptions);
115	if (this._label.show) {
116	this._elem.append(this._label.draw(ctx));
117	}
118
119	var t, tick, elem;
120	if (this.showTicks) {
121	t = this._ticks;
122	for (var i=0; i<t.length; i++) {
123	tick = t[i];
124	if (tick.showLabel && (!tick.isMinorTick \|\| this.showMinorTicks)) {
125	this._elem.append(tick.draw(ctx));
126	}
127	}
128	}
129
130	// draw the series labels
131	for (i=0; i<this.barLabels.length; i++) {
132	this.barLabelOptions.axis = this.name;
133	this.barLabelOptions.label = this.barLabels[i];
134	this._barLabels.push(new this.barLabelRenderer(this.barLabelOptions));
135	if (this.tickMode != 'bar') {
136	this._barLabels[i].show = false;
137	}
138	if (this._barLabels[i].show) {
139	var elem = this._barLabels[i].draw(ctx, plot);
140	elem.removeClass('jqplot-'+this.name+'-label');
141	elem.addClass('jqplot-'+this.name+'-tick');
142	elem.addClass('jqplot-mekko-barLabel');
143	elem.appendTo(this._elem);
144	elem = null;
145	}
146	}
147
148	}
149	return this._elem;
150	};
151
152	// called with scope of an axis
153	$.jqplot.MekkoAxisRenderer.prototype.reset = function() {
154	this.min = this._min;
155	this.max = this._max;
156	this.tickInterval = this._tickInterval;
157	this.numberTicks = this._numberTicks;
158	// this._ticks = this.__ticks;
159	};
160
161	// called with scope of axis
162	$.jqplot.MekkoAxisRenderer.prototype.set = function() {
163	var dim = 0;
164	var temp;
165	var w = 0;
166	var h = 0;
167	var lshow = (this._label == null) ? false : this._label.show;
168	if (this.show && this.showTicks) {
169	var t = this._ticks;
170	for (var i=0; i<t.length; i++) {
171	var tick = t[i];
172	if (tick.showLabel && (!tick.isMinorTick \|\| this.showMinorTicks)) {
173	if (this.name == 'xaxis' \|\| this.name == 'x2axis') {
174	temp = tick._elem.outerHeight(true);
175	}
176	else {
177	temp = tick._elem.outerWidth(true);
178	}
179	if (temp > dim) {
180	dim = temp;
181	}
182	}
183	}
184
185	if (lshow) {
186	w = this._label._elem.outerWidth(true);
187	h = this._label._elem.outerHeight(true);
188	}
189	if (this.name == 'xaxis') {
190	dim = dim + h;
191	this._elem.css({'height':dim+'px', left:'0px', bottom:'0px'});
192	}
193	else if (this.name == 'x2axis') {
194	dim = dim + h;
195	this._elem.css({'height':dim+'px', left:'0px', top:'0px'});
196	}
197	else if (this.name == 'yaxis') {
198	dim = dim + w;
199	this._elem.css({'width':dim+'px', left:'0px', top:'0px'});
200	if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {
201	this._label._elem.css('width', w+'px');
202	}
203	}
204	else {
205	dim = dim + w;
206	this._elem.css({'width':dim+'px', right:'0px', top:'0px'});
207	if (lshow && this._label.constructor == $.jqplot.AxisLabelRenderer) {
208	this._label._elem.css('width', w+'px');
209	}
210	}
211	}
212	};
213
214	// called with scope of axis
215	$.jqplot.MekkoAxisRenderer.prototype.createTicks = function() {
216	// we're are operating on an axis here
217	var ticks = this._ticks;
218	var userTicks = this.ticks;
219	var name = this.name;
220	// databounds were set on axis initialization.
221	var db = this._dataBounds;
222	var dim, interval;
223	var min, max;
224	var pos1, pos2;
225	var t, tt, i, j;
226
227	// if we already have ticks, use them.
228	// ticks must be in order of increasing value.
229
230	if (userTicks.length) {
231	// ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed
232	for (i=0; i<userTicks.length; i++){
233	var ut = userTicks[i];
234	var t = new this.tickRenderer(this.tickOptions);
235	if (ut.constructor == Array) {
236	t.value = ut[0];
237	t.label = ut[1];
238	if (!this.showTicks) {
239	t.showLabel = false;
240	t.showMark = false;
241	}
242	else if (!this.showTickMarks) {
243	t.showMark = false;
244	}
245	t.setTick(ut[0], this.name);
246	this._ticks.push(t);
247	}
248
249	else {
250	t.value = ut;
251	if (!this.showTicks) {
252	t.showLabel = false;
253	t.showMark = false;
254	}
255	else if (!this.showTickMarks) {
256	t.showMark = false;
257	}
258	t.setTick(ut, this.name);
259	this._ticks.push(t);
260	}
261	}
262	this.numberTicks = userTicks.length;
263	this.min = this._ticks[0].value;
264	this.max = this._ticks[this.numberTicks-1].value;
265	this.tickInterval = (this.max - this.min) / (this.numberTicks - 1);
266	}
267
268	// we don't have any ticks yet, let's make some!
269	else {
270	if (name == 'xaxis' \|\| name == 'x2axis') {
271	dim = this._plotDimensions.width;
272	}
273	else {
274	dim = this._plotDimensions.height;
275	}
276
277	// if min, max and number of ticks specified, user can't specify interval.
278	if (this.min != null && this.max != null && this.numberTicks != null) {
279	this.tickInterval = null;
280	}
281
282	min = (this.min != null) ? this.min : db.min;
283	max = (this.max != null) ? this.max : db.max;
284
285	// if min and max are same, space them out a bit.+
286	if (min == max) {
287	var adj = 0.05;
288	if (min > 0) {
289	adj = Math.max(Math.log(min)/Math.LN10, 0.05);
290	}
291	min -= adj;
292	max += adj;
293	}
294
295	var range = max - min;
296	var rmin, rmax;
297	var temp, prev, curr;
298	var ynumticks = [3,5,6,11,21];
299
300	// yaxis divide ticks in nice intervals from 0 to 1.
301	if (this.name == 'yaxis' \|\| this.name == 'y2axis') {
302	this.min = 0;
303	this.max = 100;
304	// user didn't specify number of ticks.
305	if (!this.numberTicks){
306	if (this.tickInterval) {
307	this.numberTicks = 3 + Math.ceil(range / this.tickInterval);
308	}
309	else {
310	temp = 2 + Math.ceil((dim-(this.tickSpacing-1))/this.tickSpacing);
311	for (i=0; i<ynumticks.length; i++) {
312	curr = temp/ynumticks[i];
313	if (curr == 1) {
314	this.numberTicks = ynumticks[i];
315	break;
316	}
317	else if (curr > 1) {
318	prev = curr;
319	continue;
320	}
321	else if (curr < 1) {
322	// was prev or is curr closer to one?
323	if (Math.abs(prev - 1) < Math.abs(curr - 1)) {
324	this.numberTicks = ynumticks[i-1];
325	break;
326	}
327	else {
328	this.numberTicks = ynumticks[i];
329	break;
330	}
331	}
332	else if (i == ynumticks.length -1) {
333	this.numberTicks = ynumticks[i];
334	}
335	}
336	this.tickInterval = range / (this.numberTicks - 1);
337	}
338	}
339
340	// user did specify number of ticks.
341	else {
342	this.tickInterval = range / (this.numberTicks - 1);
343	}
344
345	for (var i=0; i<this.numberTicks; i++){
346	tt = this.min + i * this.tickInterval;
347	t = new this.tickRenderer(this.tickOptions);
348	// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
349	if (!this.showTicks) {
350	t.showLabel = false;
351	t.showMark = false;
352	}
353	else if (!this.showTickMarks) {
354	t.showMark = false;
355	}
356	t.setTick(tt, this.name);
357	this._ticks.push(t);
358	}
359	}
360
361	// for x axes, have number ot ticks equal to number of series and ticks placed
362	// at sum of y values for each series.
363	else if (this.tickMode == 'bar') {
364	this.min = 0;
365	this.numberTicks = this._series.length + 1;
366	t = new this.tickRenderer(this.tickOptions);
367	if (!this.showTicks) {
368	t.showLabel = false;
369	t.showMark = false;
370	}
371	else if (!this.showTickMarks) {
372	t.showMark = false;
373	}
374	t.setTick(0, this.name);
375	this._ticks.push(t);
376
377	temp = 0;
378
379	for (i=1; i<this.numberTicks; i++){
380	temp += this._series[i-1]._sumy;
381	t = new this.tickRenderer(this.tickOptions);
382	if (!this.showTicks) {
383	t.showLabel = false;
384	t.showMark = false;
385	}
386	else if (!this.showTickMarks) {
387	t.showMark = false;
388	}
389	t.setTick(temp, this.name);
390	this._ticks.push(t);
391	}
392	this.max = this.max \|\| temp;
393
394	// if user specified a max and it is greater than sum, add a tick
395	if (this.max > temp) {
396	t = new this.tickRenderer(this.tickOptions);
397	if (!this.showTicks) {
398	t.showLabel = false;
399	t.showMark = false;
400	}
401	else if (!this.showTickMarks) {
402	t.showMark = false;
403	}
404	t.setTick(this.max, this.name);
405	this._ticks.push(t);
406
407	}
408	}
409
410	else if (this.tickMode == 'even') {
411	this.min = 0;
412	this.max = this.max \|\| db.max;
413	// get a desired number of ticks
414	var nt = 2 + Math.ceil((dim-(this.tickSpacing-1))/this.tickSpacing);
415	range = this.max - this.min;
416	this.numberTicks = nt;
417	this.tickInterval = range / (this.numberTicks - 1);
418
419	for (i=0; i<this.numberTicks; i++){
420	tt = this.min + i * this.tickInterval;
421	t = new this.tickRenderer(this.tickOptions);
422	// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
423	if (!this.showTicks) {
424	t.showLabel = false;
425	t.showMark = false;
426	}
427	else if (!this.showTickMarks) {
428	t.showMark = false;
429	}
430	t.setTick(tt, this.name);
431	this._ticks.push(t);
432	}
433
434	}
435	}
436	};
437
438	// called with scope of axis
439	$.jqplot.MekkoAxisRenderer.prototype.pack = function(pos, offsets) {
440	var ticks = this._ticks;
441	var max = this.max;
442	var min = this.min;
443	var offmax = offsets.max;
444	var offmin = offsets.min;
445	var lshow = (this._label == null) ? false : this._label.show;
446
447	for (var p in pos) {
448	this._elem.css(p, pos[p]);
449	}
450
451	this._offsets = offsets;
452	// pixellength will be + for x axes and - for y axes becasue pixels always measured from top left.
453	var pixellength = offmax - offmin;
454	var unitlength = max - min;
455
456	// point to unit and unit to point conversions references to Plot DOM element top left corner.
457	this.p2u = function(p){
458	return (p - offmin) * unitlength / pixellength + min;
459	};
460
461	this.u2p = function(u){
462	return (u - min) * pixellength / unitlength + offmin;
463	};
464
465	if (this.name == 'xaxis' \|\| this.name == 'x2axis'){
466	this.series_u2p = function(u){
467	return (u - min) * pixellength / unitlength;
468	};
469	this.series_p2u = function(p){
470	return p * unitlength / pixellength + min;
471	};
472	}
473
474	else {
475	this.series_u2p = function(u){
476	return (u - max) * pixellength / unitlength;
477	};
478	this.series_p2u = function(p){
479	return p * unitlength / pixellength + max;
480	};
481	}
482
483	if (this.show) {
484	if (this.name == 'xaxis' \|\| this.name == 'x2axis') {
485	for (var i=0; i<ticks.length; i++) {
486	var t = ticks[i];
487	if (t.show && t.showLabel) {
488	var shim;
489
490	if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
491	// will need to adjust auto positioning based on which axis this is.
492	var temp = (this.name == 'xaxis') ? 1 : -1;
493	switch (t.labelPosition) {
494	case 'auto':
495	// position at end
496	if (temp * t.angle < 0) {
497	shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
498	}
499	// position at start
500	else {
501	shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
502	}
503	break;
504	case 'end':
505	shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
506	break;
507	case 'start':
508	shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
509	break;
510	case 'middle':
511	shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
512	break;
513	default:
514	shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
515	break;
516	}
517	}
518	else {
519	shim = -t.getWidth()/2;
520	}
521	var val = this.u2p(t.value) + shim + 'px';
522	t._elem.css('left', val);
523	t.pack();
524	}
525	}
526	var w;
527	if (lshow) {
528	w = this._label._elem.outerWidth(true);
529	this._label._elem.css('left', offmin + pixellength/2 - w/2 + 'px');
530	if (this.name == 'xaxis') {
531	this._label._elem.css('bottom', '0px');
532	}
533	else {
534	this._label._elem.css('top', '0px');
535	}
536	this._label.pack();
537	}
538	// now show the labels under the bars.
539	var b, l, r;
540	for (var i=0; i<this.barLabels.length; i++) {
541	b = this._barLabels[i];
542	if (b.show) {
543	w = b.getWidth();
544	l = this._ticks[i].getLeft() + this._ticks[i].getWidth();
545	r = this._ticks[i+1].getLeft();
546	b._elem.css('left', (r+l-w)/2+'px');
547	b._elem.css('top', this._ticks[i]._elem.css('top'));
548	b.pack();
549	}
550	}
551	}
552	else {
553	for (var i=0; i<ticks.length; i++) {
554	var t = ticks[i];
555	if (t.show && t.showLabel) {
556	var shim;
557	if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
558	// will need to adjust auto positioning based on which axis this is.
559	var temp = (this.name == 'yaxis') ? 1 : -1;
560	switch (t.labelPosition) {
561	case 'auto':
562	// position at end
563	case 'end':
564	if (temp * t.angle < 0) {
565	shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
566	}
567	else {
568	shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
569	}
570	break;
571	case 'start':
572	if (t.angle > 0) {
573	shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
574	}
575	else {
576	shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
577	}
578	break;
579	case 'middle':
580	shim = -t.getHeight()/2;
581	break;
582	default:
583	shim = -t.getHeight()/2;
584	break;
585	}
586	}
587	else {
588	shim = -t.getHeight()/2;
589	}
590
591	var val = this.u2p(t.value) + shim + 'px';
592	t._elem.css('top', val);
593	t.pack();
594	}
595	}
596	if (lshow) {
597	var h = this._label._elem.outerHeight(true);
598	this._label._elem.css('top', offmax - pixellength/2 - h/2 + 'px');
599	if (this.name == 'yaxis') {
600	this._label._elem.css('left', '0px');
601	}
602	else {
603	this._label._elem.css('right', '0px');
604	}
605	this._label.pack();
606	}
607	}
608	}
609	};
610	})(jQuery);

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