-
Notifications
You must be signed in to change notification settings - Fork 65
/
jquery.svggraph.js
1539 lines (1416 loc) · 60.6 KB
/
jquery.svggraph.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* http://keith-wood.name/svg.html
SVG graphing extension for jQuery v1.5.0.
Written by Keith Wood (kbwood{at}iinet.com.au) August 2007.
Available under the MIT (http://keith-wood.name/licence.html) license.
Please attribute the author if you use it. */
(function($) { // Hide scope, no $ conflict
$.svg.addExtension('graph', SVGGraph);
$.svg.graphing = new SVGGraphing();
/** The SVG graphing manager.
<p>Use the singleton instance of this class, $.svg.graphing,
to interact with the SVG graphing functionality.</p>
@module SVGGraphing */
function SVGGraphing() {
this.regional = [];
this.regional[''] = {percentageText: 'Percentage'};
this.region = this.regional[''];
}
$.extend(SVGGraphing.prototype, {
_chartTypes: [],
/** Add a new chart rendering type to the package.
<p>The rendering object must implement the following functions: <code>getTitle()</code>,
<code>getDescription()</code>, <code>getOptions()</code>, <code>drawChart(graph)</code>.</p>
@param id {string} The ID of this graph renderer.
@param chartType {object} The object implementing this chart type. */
addChartType: function(id, chartType) {
this._chartTypes[id] = chartType;
},
/** Retrieve the list of chart types.
@return {object[]} The array of chart types indexed by ID */
chartTypes: function() {
return this._chartTypes;
}
});
/** The SVG graph manager.
<p>Use the singleton instance of this class, $.svg.graph,
to interact with the SVG graph functionality.</p>
@module SVGGraph */
function SVGGraph(wrapper) {
this._wrapper = wrapper; // The attached SVG wrapper object
this._drawNow = false; // True for immediate update, false to wait for redraw call
for (var id in $.svg.graphing._chartTypes) {
this._chartType = $.svg.graphing._chartTypes[id]; // Use first graph renderer
break;
}
this._chartOptions = {}; // Extra options for the graph type
// The graph title and settings
this._title = {value: '', offset: 25, settings: {textAnchor: 'middle'}};
this._area = [0.1, 0.1, 0.8, 0.9]; // The chart area: left, top, right, bottom, > 1 in pixels, <= 1 as proportion
this._chartFormat = {fill: 'none', stroke: 'black'}; // The formatting for the chart area
this._gridlines = []; // The formatting of the x- and y-gridlines
this._series = []; // The series to be plotted, each is an object
this._onstatus = null; // The callback function for status updates
this._chartCont = this._wrapper.svg(0, 0, 0, 0, {class_: 'svg-graph'}); // The main container for the graph
this.xAxis = new SVGGraphAxis(this); // The main x-axis
this.xAxis.title('', 40);
this.yAxis = new SVGGraphAxis(this); // The main y-axis
this.yAxis.title('', 40);
this.x2Axis = null; // The secondary x-axis
this.y2Axis = null; // The secondary y-axis
this.legend = new SVGGraphLegend(this); // The chart legend
this._drawNow = true;
}
$.extend(SVGGraph.prototype, {
/* Useful indexes. */
/** Index in a dimensions array for x-coordinate. */
X: 0,
/** Index in a dimensions array for y-coordinate. */
Y: 1,
/** Index in a dimensions array for width. */
W: 2,
/** Index in a dimensions array for height. */
H: 3,
/** Index in an area array for left x-coordinate. */
L: 0,
/** Index in an area array for top y-coordinate. */
T: 1,
/** Index in an area array for right x-coordinate. */
R: 2,
/** Index in an area array for bottom y-coordinate. */
B: 3,
/* Standard percentage axis. */
_percentageAxis: new SVGGraphAxis(this, $.svg.graphing.region.percentageText, 0, 100, 10, 0),
/** Set or retrieve the container for the graph.
@param cont {SVGElement} The container for the graph.
@return {SVGGraph|SVGElement} This graph object or the current container (if no parameters). */
container: function(cont) {
if (arguments.length === 0) {
return this._chartCont;
}
this._chartCont = cont;
return this;
},
/** Set or retrieve the type of chart to be rendered.
<p>See <code>$.svg.graphing.getChartTypes()</code> for the list of available types.</p>
@param id {string} The ID of the chart type.
@param [options] {object} Additional settings for this chart type.
@return {SVGGraph|string} This graph object or the chart type (if no parameters).
@deprecated Use <code>type()</code>. */
chartType: function(id, options) {
return (arguments.length === 0 ? this.type() : this.type(id, options));
},
/** Set or retrieve the type of chart to be rendered.
<p>See <code>$.svg.graphing.getChartTypes()</code> for the list of available types.</p>
@param id {string} The ID of the chart type.
@param [options] {object} Additional settings for this chart type.
@return {SVGGraph|string} This graph object or the chart type (if no parameters). */
type: function(id, options) {
if (arguments.length === 0) {
return this._chartType;
}
var chartType = $.svg.graphing._chartTypes[id];
if (chartType) {
this._chartType = chartType;
this._chartOptions = $.extend({}, options || {});
}
this._drawGraph();
return this;
},
/** Set or retrieve additional options for the particular chart type.
@param options {object} The extra options.
@return {SVGGraph|object} This graph object or the chart options (if no parameters).
@deprecated Use <code>options()</code>. */
chartOptions: function(options) {
return(arguments.length === 0 ? this.options() : this.options(options));
},
/** Set or retrieve additional options for the particular chart type.
@param options {object} The extra options.
@return {SVGGraph|object} This graph object or the chart options (if no parameters). */
options: function(options) {
if (arguments.length === 0) {
return this._chartOptions;
}
this._chartOptions = $.extend({}, options);
this._drawGraph();
return this;
},
/** Set or retrieve the background of the graph chart.
@param fill {string} How to fill the chart background.
@param [stroke] {string} The colour of the outline.
@param [settings] {object} Additional formatting for the chart background.
@return {SVGGraph|object} This graph object or the chart format (if no parameters).
@deprecated Use <code>format()</code>. */
chartFormat: function(fill, stroke, settings) {
return (arguments.length === 0 ? this.format() : this.format(fill, stroke, settings));
},
/** Set or retrieve the background of the graph chart.
@param fill {string} How to fill the chart background.
@param [stroke] {string} The colour of the outline.
@param [settings] {object} Additional formatting for the chart background.
@return {SVGGraph|object} This graph object or the chart format (if no parameters). */
format: function(fill, stroke, settings) {
if (arguments.length === 0) {
return this._chartFormat;
}
if (typeof stroke === 'object') {
settings = stroke;
stroke = null;
}
this._chartFormat = $.extend({fill: fill}, (stroke ? {stroke: stroke} : {}), settings || {});
this._drawGraph();
return this;
},
/** Set or retrieve the main chart area.
@param left {number|number[]} > 1 is pixels, <= 1 is proportion of width or array for left, top, right, bottom.
@param [top] {number} > 1 is pixels, <= 1 is proportion of height.
@param [right] {number} > 1 is pixels, <= 1 is proportion of width.
@param [bottom] {number} > 1 is pixels, <= 1 is proportion of height.
@return {SVGGraph|number[]} This graph object or the chart area: left, top, right, bottom (if no parameters).
@deprecated Use <code>area()</code>. */
chartArea: function(left, top, right, bottom) {
return (arguments.length === 0 ? this.area() : this.area(left, top, right, bottom));
},
/** Set or retrieve the main chart area.
@param left {number|number[]} > 1 is pixels, <= 1 is proportion of width or array for left, top, right, bottom.
@param [top] {number} > 1 is pixels, <= 1 is proportion of height.
@param [right] {number} > 1 is pixels, <= 1 is proportion of width.
@param [bottom] {number} > 1 is pixels, <= 1 is proportion of height.
@return {SVGGraph|number[]} This graph object or the chart area: left, top, right, bottom (if no parameters). */
area: function(left, top, right, bottom) {
if (arguments.length === 0) {
return this._area;
}
this._area = ($.isArray(left) ? left : [left, top, right, bottom]);
this._drawGraph();
return this;
},
/** Set or retrieve the gridlines formatting for the graph chart.
@param xSettings {string|object} The colour of the gridlines along the x-axis,
or formatting for the gridlines along the x-axis, or <code>null</code> for none.
@param ySettings {string|object} The colour of the gridlines along the y-axis,
or formatting for the gridlines along the y-axis, or <code>null</code> for none.
@return {SVGGraph|object[]} This graph object or the gridlines formatting (if no parameters) */
gridlines: function(xSettings, ySettings) {
if (arguments.length === 0) {
return this._gridlines;
}
this._gridlines = [(typeof xSettings === 'string' ? {stroke: xSettings} : xSettings),
(typeof ySettings === 'string' ? {stroke: ySettings} : ySettings)];
if (this._gridlines[0] == null && this._gridlines[1] == null) {
this._gridlines = [];
}
this._drawGraph();
return this;
},
/** Set or retrieve the title of the graph and its formatting.
@param value {string} The title.
@param [offset] {number} The vertical positioning of the title > 1 is pixels, <= 1 is proportion of width.
@param [colour] {string} The colour of the title.
@param [settings] {object} Formatting for the title.
@return {SVGGraph|object} This graph object or value, offset, and settings for the title (if no parameters). */
title: function(value, offset, colour, settings) {
if (arguments.length === 0) {
return this._title;
}
if (typeof offset !== 'number') {
settings = colour;
colour = offset;
offset = null;
}
if (typeof colour !== 'string') {
settings = colour;
colour = null;
}
this._title = {value: value, offset: offset || this._title.offset,
settings: $.extend({textAnchor: 'middle'}, (colour ? {fill: colour} : {}), settings || {})};
this._drawGraph();
return this;
},
/** Add a series of values to be plotted on the graph.
@param [name] {string} The name of this series.
@param values {number[]} The values to be plotted.
@param fill {string} How the plotted values are filled.
@param [stroke] {string} The colour of the plotted lines.
@param [strokeWidth] {number} The width of the plotted lines.
@param [settings] {object} Additional settings for the plotted values.
@return {SVGGraph} This graph object. */
addSeries: function(name, values, fill, stroke, strokeWidth, settings) {
this._series.push(new SVGGraphSeries(this, name, values, fill, stroke, strokeWidth, settings));
this._drawGraph();
return this;
},
/** Retrieve the series wrappers.
@param [i] {number} The series index.
@return {SVGGraphSeries|SVGGraphSeries[]} The specified series or the list of series. */
series: function(i) {
return (arguments.length > 0 ? this._series[i] : null) || this._series;
},
/** Suppress drawing of the graph until redraw() is called.
@return {SVGGraph} This graph object. */
noDraw: function() {
this._drawNow = false;
return this;
},
/** Redraw the entire graph with the current settings and values.
@return {SVGGraph} This graph object. */
redraw: function() {
this._drawNow = true;
this._drawGraph();
return this;
},
/** Set the callback function for status updates.
@param onstatus {function} The callback function.
@return {SVGGraph} This graph object. */
status: function(onstatus) {
this._onstatus = onstatus;
return this;
},
/** Actually draw the graph (if allowed) based on the graph type set.
@private */
_drawGraph: function() {
if (!this._drawNow) {
return;
}
while (this._chartCont.firstChild) {
this._chartCont.removeChild(this._chartCont.firstChild);
}
if (!this._chartCont.parent) {
this._wrapper._svg.appendChild(this._chartCont);
}
// Set sizes if not already there
if (!this._chartCont.width) {
this._chartCont.setAttribute('width',
parseInt(this._chartCont.getAttribute('width'), 10) || this._wrapper.width());
}
else if (this._chartCont.width.baseVal) {
this._chartCont.width.baseVal.value = this._chartCont.width.baseVal.value || this._wrapper.width();
}
else {
this._chartCont.width = this._chartCont.width || this._wrapper.width();
}
if (!this._chartCont.height) {
this._chartCont.setAttribute('height',
parseInt(this._chartCont.getAttribute('height'), 10) || this._wrapper.height());
}
else if (this._chartCont.height.baseVal) {
this._chartCont.height.baseVal.value = this._chartCont.height.baseVal.value || this._wrapper.height();
}
else {
this._chartCont.height = this._chartCont.height || this._wrapper.height();
}
this._chartType.drawGraph(this);
},
/** Decode an attribute value.
@private
@param node {SVGElement} The node to examine.
@param name {string} The attribute name.
@return {string} The actual value. */
_getValue: function(node, name) {
return (!node[name] ? parseInt(node.getAttribute(name), 10) :
(node[name].baseVal ? node[name].baseVal.value : node[name]));
},
/** Draw the graph title - centred.
@private */
_drawTitle: function() {
this._wrapper.text(this._chartCont, this._getValue(this._chartCont, 'width') / 2,
this._title.offset, this._title.value, this._title.settings);
},
/** Calculate the actual dimensions of the chart area.
@private
@param [area] {number[]} The area values to evaluate, defaulting to the current ones.
@return {number[]} An array of dimension values: left, top, width, height. */
_getDims: function(area) {
area = area || this._area;
var availWidth = this._getValue(this._chartCont, 'width');
var availHeight = this._getValue(this._chartCont, 'height');
var left = (area[this.L] > 1 ? area[this.L] : availWidth * area[this.L]);
var top = (area[this.T] > 1 ? area[this.T] : availHeight * area[this.T]);
var width = (area[this.R] > 1 ? area[this.R] : availWidth * area[this.R]) - left;
var height = (area[this.B] > 1 ? area[this.B] : availHeight * area[this.B]) - top;
return [left, top, width, height];
},
/** Draw the chart background, including gridlines.
@private
@param [noXGrid=false] {boolean} <code>true</code> to suppress the x-gridlines, <code>false</code> to draw them.
@param [noYGrid=false] {boolean} <code>true</code> to suppress the y-gridlines, <code>false</code> to draw them.
@return {SVGEelement} The background group element */
_drawChartBackground: function(noXGrid, noYGrid) {
var bg = this._wrapper.group(this._chartCont, {class_: 'background'});
var dims = this._getDims();
this._wrapper.rect(bg, dims[this.X], dims[this.Y], dims[this.W], dims[this.H], this._chartFormat);
if (this._gridlines[0] && this.yAxis._ticks.major && !noYGrid) {
this._drawGridlines(bg, this.yAxis, true, dims, this._gridlines[0]);
}
if (this._gridlines[1] && this.xAxis._ticks.major && !noXGrid) {
this._drawGridlines(bg, this.xAxis, false, dims, this._gridlines[1]);
}
return bg;
},
/** Draw one set of gridlines.
@private
@param bg {SVGElement} The background group element.
@param axis {SVGGraphAxis} The axis definition.
@param horiz {boolean} <code>true</code> if horizontal, <code>false</code> if vertical.
@param dims {number[]} The left, top, width, height of the chart area.
@param format {object} Additional settings for the gridlines. */
_drawGridlines: function(bg, axis, horiz, dims, format) {
var g = this._wrapper.group(bg, format);
var scale = (horiz ? dims[this.H] : dims[this.W]) / (axis._scale.max - axis._scale.min);
var major = Math.floor(axis._scale.min / axis._ticks.major) * axis._ticks.major;
major = (major < axis._scale.min ? major + axis._ticks.major : major);
while (major <= axis._scale.max) {
var v = (horiz ? axis._scale.max - major : major - axis._scale.min) * scale +
(horiz ? dims[this.Y] : dims[this.X]);
this._wrapper.line(g, (horiz ? dims[this.X] : v), (horiz ? v : dims[this.Y]),
(horiz ? dims[this.X] + dims[this.W] : v), (horiz ? v : dims[this.Y] + dims[this.H]));
major += axis._ticks.major;
}
},
/** Draw the axes in their standard configuration.
@private
@param [noX=false] {boolean} <code>true</code> to suppress the x-axes, <code>false</code> to draw it. */
_drawAxes: function(noX) {
var dims = this._getDims();
if (this.xAxis && !noX) {
if (this.xAxis._title) {
this._wrapper.text(this._chartCont, dims[this.X] + dims[this.W] / 2,
dims[this.Y] + dims[this.H] + this.xAxis._titleOffset, this.xAxis._title, this.xAxis._titleFormat);
}
this._drawAxis(this.xAxis, 'xAxis', dims[this.X], dims[this.Y] + dims[this.H],
dims[this.X] + dims[this.W], dims[this.Y] + dims[this.H]);
}
if (this.yAxis) {
if (this.yAxis._title) {
this._wrapper.text(this._chartCont, 0, 0, this.yAxis._title, $.extend({textAnchor: 'middle',
transform: 'translate(' + (dims[this.X] - this.yAxis._titleOffset) + ',' +
(dims[this.Y] + dims[this.H] / 2) + ') rotate(-90)'}, this.yAxis._titleFormat || {}));
}
this._drawAxis(this.yAxis, 'yAxis', dims[this.X], dims[this.Y], dims[this.X], dims[this.Y] + dims[this.H]);
}
if (this.x2Axis && !noX) {
if (this.x2Axis._title) {
this._wrapper.text(this._chartCont, dims[this.X] + dims[this.W] / 2,
dims[this.X] - this.x2Axis._titleOffset, this.x2Axis._title, this.x2Axis._titleFormat);
}
this._drawAxis(this.x2Axis, 'x2Axis', dims[this.X], dims[this.Y], dims[this.X] + dims[this.W], dims[this.Y]);
}
if (this.y2Axis) {
if (this.y2Axis._title) {
this._wrapper.text(this._chartCont, 0, 0, this.y2Axis._title, $.extend({textAnchor: 'middle',
transform: 'translate(' + (dims[this.X] + dims[this.W] + this.y2Axis._titleOffset) + ',' +
(dims[this.Y] + dims[this.H] / 2) + ') rotate(-90)'}, this.y2Axis._titleFormat || {}));
}
this._drawAxis(this.y2Axis, 'y2Axis', dims[this.X] + dims[this.W], dims[this.Y],
dims[this.X] + dims[this.W], dims[this.Y] + dims[this.H]);
}
},
/** Draw an axis and its tick marks.
@private
@param axis {SVGGraphAxis} The axis definition.
@param id {string} The identifier for the axis group element.
@param x1 {number} Starting x-coodinate for the axis.
@param y1 {number} Starting y-coodinate for the axis.
@param x2 {number} Ending x-coodinate for the axis.
@param y2 {number} Ending y-coodinate for the axis. */
_drawAxis: function(axis, id, x1, y1, x2, y2) {
var horiz = (y1 === y2);
var gl = this._wrapper.group(this._chartCont, $.extend({class_: id}, axis._lineFormat));
var gt = this._wrapper.group(this._chartCont, $.extend({class_: id + 'Labels',
textAnchor: (horiz ? 'middle' : 'end')}, axis._labelFormat));
this._wrapper.line(gl, x1, y1, x2, y2);
if (axis._ticks.major) {
var bottomRight = (x2 > (this._getValue(this._chartCont, 'width') / 2) &&
y2 > (this._getValue(this._chartCont, 'height') / 2));
var scale = (horiz ? x2 - x1 : y2 - y1) / (axis._scale.max - axis._scale.min);
var size = axis._ticks.size;
var major = Math.floor(axis._scale.min / axis._ticks.major) * axis._ticks.major;
major = (major < axis._scale.min ? major + axis._ticks.major : major);
var minor = (!axis._ticks.minor ? axis._scale.max + 1 :
Math.floor(axis._scale.min / axis._ticks.minor) * axis._ticks.minor);
minor = (minor < axis._scale.min ? minor + axis._ticks.minor : minor);
var offsets = this._getTickOffsets(axis, bottomRight);
var count = 0;
while (major <= axis._scale.max || minor <= axis._scale.max) {
var cur = Math.min(major, minor);
var len = (cur === major ? size : size / 2);
var v = (horiz ? x1 : y1) + (horiz ? cur - axis._scale.min : axis._scale.max - cur) * scale;
this._wrapper.line(gl, (horiz ? v : x1 + len * offsets[0]), (horiz ? y1 + len * offsets[0] : v),
(horiz ? v : x1 + len * offsets[1]), (horiz ? y1 + len * offsets[1] : v));
if (cur === major) {
this._wrapper.text(gt, (horiz ? v : x1 - size), (horiz ? y1 + 2 * size : v),
(axis._labels ? axis._labels[count++] : '' + cur));
}
major += (cur === major ? axis._ticks.major : 0);
minor += (cur === minor ? axis._ticks.minor : 0);
}
}
},
/** Calculate offsets based on axis and tick positions.
@private
@param axis {SVGGraphAxis} The axis definition.
@param bottomRight {boolean} <code>true</code> if this axis is appearing on the bottom or
right of the chart area, <code>false</code> if to the top or left.
@return {number[]} The array of offset multipliers (-1..+1). */
_getTickOffsets: function(axis, bottomRight) {
return [(axis._ticks.position === (bottomRight ? 'in' : 'out') || axis._ticks.position === 'both' ? -1 : 0),
(axis._ticks.position === (bottomRight ? 'out' : 'in') || axis._ticks.position === 'both' ? +1 : 0), ];
},
/** Retrieve the standard percentage axis.
@private
@return {SVGGraphAxis} Percentage axis. */
_getPercentageAxis: function() {
this._percentageAxis._title = $.svg.graphing.region.percentageText;
return this._percentageAxis;
},
/** Calculate the column totals across all the series.
@private
@return {number[]} The column totals. */
_getTotals: function() {
var totals = [];
var numVal = (this._series.length ? this._series[0]._values.length : 0);
for (var i = 0; i < numVal; i++) {
totals[i] = 0;
for (var j = 0; j < this._series.length; j++) {
totals[i] += this._series[j]._values[i];
}
}
return totals;
},
/** Draw the chart legend.
@private */
_drawLegend: function() {
if (!this.legend._show) {
return;
}
var g = this._wrapper.group(this._chartCont, {class_: 'legend'});
var dims = this._getDims(this.legend._area);
this._wrapper.rect(g, dims[this.X], dims[this.Y], dims[this.W], dims[this.H], this.legend._bgSettings);
var horiz = dims[this.W] > dims[this.H];
var numSer = this._series.length;
var offset = (horiz ? dims[this.W] : dims[this.H]) / numSer;
var xBase = dims[this.X] + 5;
var yBase = dims[this.Y] + ((horiz ? dims[this.H] : offset) + this.legend._sampleSize) / 2;
for (var i = 0; i < numSer; i++) {
var series = this._series[i];
this._wrapper.rect(g, xBase + (horiz ? i * offset : 0),
yBase + (horiz ? 0 : i * offset) - this.legend._sampleSize,
this.legend._sampleSize, this.legend._sampleSize,
{fill: series._fill, stroke: series._stroke, strokeWidth: 1});
this._wrapper.text(g, xBase + (horiz ? i * offset : 0) + this.legend._sampleSize + 5,
yBase + (horiz ? 0 : i * offset), series._name, this.legend._textSettings);
}
},
/** Show the current value status on hover.
@private
@param elem {string|SVGElement} The selector or SVG element to show the status in.
@param label {string} The current label.
@param value {number} The current value. */
_showStatus: function(elem, label, value) {
var status = this._onstatus;
if (this._onstatus) {
$(elem).hover(function() { status.apply(this, [label, value]); },
function() { status.apply(this, ['', 0]); });
}
}
});
/** A graph series definition.
@module SVGGraphSeries */
/** Details about each graph series.
<p>Created through <code>graph.addSeries()</code>.</p>
@param graph {SVGGraph} The owning graph.
@param [name] {string} The name of this series.
@param values {number[]} The values to be plotted.
@param fill {string} How the plotted values are filled.
@param [stroke] {string} The colour of the plotted lines.
@param [strokeWidth] {number} The width of the plotted lines.
@param [settings] {object} Additional settings for the plotted values.
@return {SVGGraphSeries} The new series object. */
function SVGGraphSeries(graph, name, values, fill, stroke, strokeWidth, settings) {
if (typeof name !== 'string') {
settings = strokeWidth;
strokeWidth = stroke;
stroke = fill;
fill = values;
values = name;
name = null;
}
if (typeof stroke !== 'string') {
settings = strokeWidth;
strokeWidth = stroke;
stroke = null;
}
if (typeof strokeWidth !== 'number') {
settings = strokeWidth;
strokeWidth = null;
}
this._graph = graph; // The owning graph
this._name = name || ''; // The name of this series
this._values = values || []; // The list of values for this series
this._axis = 1; // Which axis this series applies to: 1 = primary, 2 = secondary
this._fill = fill || 'green'; // How the series is plotted
this._stroke = stroke || 'black'; // The colour for the (out)line
this._strokeWidth = strokeWidth || 1; // The (out)line width
this._settings = settings || {}; // Additional formatting settings for the series
}
$.extend(SVGGraphSeries.prototype, {
/** Set or retrieve the name for this series.
@param name {string} The series' name.
@return {SVGGraphSeries|string} This series object or the series name (if no parameters). */
name: function(name) {
if (arguments.length === 0) {
return this._name;
}
this._name = name;
this._graph._drawGraph();
return this;
},
/** Set or retrieve the values for this series.
@param [name] {string} The series' name.
@param values {number[]} The values to be graphed.
@return {SVGGraphSeries|number[]} This series object or the series values (if no parameters). */
values: function(name, values) {
if (arguments.length === 0) {
return this._values;
}
if ($.isArray(name)) {
values = name;
name = null;
}
this._name = name || this._name;
this._values = values;
this._graph._drawGraph();
return this;
},
/** Set or retrieve the formatting for this series.
@param fill {string} How the values are filled when plotted.
@param [stroke] {string} The (out)line colour.
@param [strokeWidth] {number} The line's width.
@param [settings] {object} Additional formatting settings for the series.
@return {SVGGraphSeries|object} This series object or formatting settings (if no parameters). */
format: function(fill, stroke, strokeWidth, settings) {
if (arguments.length === 0) {
return $.extend({fill: this._fill, stroke: this._stroke, strokeWidth: this._strokeWidth}, this._settings);
}
if (typeof stroke !== 'string') {
settings = strokeWidth;
strokeWidth = stroke;
stroke = null;
}
if (typeof strokeWidth !== 'number') {
settings = strokeWidth;
strokeWidth = null;
}
this._fill = fill || this._fill;
this._stroke = stroke || this._stroke;
this._strokeWidth = strokeWidth || this._strokeWidth;
$.extend(this._settings, settings || {});
this._graph._drawGraph();
return this;
},
/** Return to the parent graph.
@return {SVGGraph} The parent graph. */
end: function() {
return this._graph;
}
});
/** A graph axis definition.
@module SVGGraphAxis */
/** Details about each graph axis.
@param graph {SVGGraph} The owning graph.
@param title {string} The title of the axis.
@param min [number} The minimum value displayed on this axis.
@param max {number} The maximum value displayed on this axis.
@param major {number} The distance between major ticks.
@param [minor] {number} The distance between minor ticks.
@return {SVGGraphAxis} The new axis object. */
function SVGGraphAxis(graph, title, min, max, major, minor) {
this._graph = graph; // The owning graph
this._title = title || ''; // Title of this axis
this._titleFormat = {}; // Formatting settings for the title
this._titleOffset = 0; // The offset for positioning the title
this._labels = null; // List of labels for this axis - one per possible value across all series
this._labelFormat = {}; // Formatting settings for the labels
this._lineFormat = {stroke: 'black', strokeWidth: 1}; // Formatting settings for the axis lines
this._ticks = {major: major || 10, minor: minor || 0, size: 10, position: 'out'}; // Tick mark options
this._scale = {min: min || 0, max: max || 100}; // Axis scale settings
this._crossAt = 0; // Where this axis crosses the other one
}
$.extend(SVGGraphAxis.prototype, {
/** Set or retrieve the scale for this axis.
@param min {number} The minimum value shown.
@param max {number} The maximum value shown.
@return {SVGGraphAxis|object} This axis object or min and max values (if no parameters). */
scale: function(min, max) {
if (arguments.length === 0) {
return this._scale;
}
this._scale.min = min;
this._scale.max = max;
this._graph._drawGraph();
return this;
},
/** Set or retrieve the ticks for this axis.
@param major {number} The distance between major ticks.
@param minor {number} The distance between minor ticks.
@param [size] {number} The length of the major ticks (minor are half).
@param [position] {string} The location of the ticks: 'in', 'out', 'both'.
@return {SVGGraphAxis|object} This axis object or major, minor, size, and position values (if no parameters). */
ticks: function(major, minor, size, position) {
if (arguments.length === 0) {
return this._ticks;
}
if (typeof size === 'string') {
position = size;
size = null;
}
this._ticks.major = major;
this._ticks.minor = minor;
this._ticks.size = size || this._ticks.size;
this._ticks.position = position || this._ticks.position;
this._graph._drawGraph();
return this;
},
/** Set or retrieve the title for this axis.
@param title {string} The title text
@param [offset] {number} The distance to offset the title position.
@param [colour] {string} How to colour the title.
@param [format] {object} Formatting settings for the title.
@return {SVGGraphAxis|object} This axis object or title, offset, and format values (if no parameters). */
title: function(title, offset, colour, format) {
if (arguments.length === 0) {
return {title: this._title, offset: this._titleOffset, format: this._titleFormat};
}
if (typeof offset !== 'number') {
format = colour;
colour = offset;
offset = null;
}
if (typeof colour !== 'string') {
format = colour;
colour = null;
}
this._title = title;
this._titleOffset = (offset != null ? offset : this._titleOffset);
if (colour || format) {
this._titleFormat = $.extend(format || {}, (colour ? {fill: colour} : {}));
}
this._graph._drawGraph();
return this;
},
/** Set or retrieve the labels for this axis.
@param labels {string[]} The text for each entry.
@param [colour] {string} How to colour the labels.
@param [format] {object} Formatting settings for the labels.
@return {SVGGraphAxis|object} This axis object or labels and format values (if no parameters). */
labels: function(labels, colour, format) {
if (arguments.length === 0) {
return {labels: this._labels, format: this._labelFormat};
}
if (typeof colour !== 'string') {
format = colour;
colour = null;
}
this._labels = labels;
if (colour || format) {
this._labelFormat = $.extend(format || {}, (colour ? {fill: colour} : {}));
}
this._graph._drawGraph();
return this;
},
/** Set or retrieve the line formatting for this axis.
@param colour {string} The line's colour
@param [width] {number} The line's width.
@param [settings] {object} Additional formatting settings for the line.
@return {SVGGraphAxis|object} This axis object or line formatting values (if no parameters). */
line: function(colour, width, settings) {
if (arguments.length === 0) {
return this._lineFormat;
}
if (typeof width === 'object') {
settings = width;
width = null;
}
$.extend(this._lineFormat, {stroke: colour}, (width ? {strokeWidth: width} : {}), settings || {});
this._graph._drawGraph();
return this;
},
/** Return to the parent graph.
@return {SVGGraph} The parent graph. */
end: function() {
return this._graph;
}
});
/** A graph legend definition.
@module SVGGraphLegend */
/** Details about each graph legend.
@param graph {SVGGraph} The owning graph.
@param [bgSettings] {object} Additional formatting settings for the legend background.
@param [textSettings] {object} Additional formatting settings for the legend text.
@return {SVGGraphLegend} The new legend object. */
function SVGGraphLegend(graph, bgSettings, textSettings) {
this._graph = graph; // The owning graph
this._show = true; // Show the legend?
this._area = [0.9, 0.1, 1.0, 0.9]; // The legend area: left, top, right, bottom, > 1 in pixels, <= 1 as proportion
this._sampleSize = 15; // Size of sample box
this._bgSettings = bgSettings || {stroke: 'gray'}; // Additional formatting settings for the legend background
this._textSettings = textSettings || {}; // Additional formatting settings for the text
}
$.extend(SVGGraphLegend.prototype, {
/** Set or retrieve whether the legend should be shown.
@param show {boolean} <code>true</code> to display it, <code>false</code> to hide it.
@return {SVGGraphLegend|boolean} This legend object or show the legend? (if no parameters) */
show: function(show) {
if (arguments.length === 0) {
return this._show;
}
this._show = show;
this._graph._drawGraph();
return this;
},
/** Set or retrieve the legend area.
@param left {number|number[]} > 1 is pixels, <= 1 is proportion of width or array for left, top, right, bottom.
@param [top] {number) > 1 is pixels, <= 1 is proportion of height.
@param [right] {number) > 1 is pixels, <= 1 is proportion of width.
@param [bottom] {number) > 1 is pixels, <= 1 is proportion of height.
@return {SVGGraphLegend|number[]} This legend object or the legend area:
left, top, right, bottom (if no parameters). */
area: function(left, top, right, bottom) {
if (arguments.length === 0) {
return this._area;
}
this._area = ($.isArray(left) ? left : [left, top, right, bottom]);
this._graph._drawGraph();
return this;
},
/** Set or retrieve additional settings for the legend area.
@param [sampleSize] {number} The size of the sample box to display.
@param bgSettings {object} Additional formatting settings for the legend background.
@param [textSettings] {object} Additional formatting settings for the legend text.
@return {SVGGraphLegend|object} This legend object or
bgSettings and textSettings for the legend (if no parameters). */
settings: function(sampleSize, bgSettings, textSettings) {
if (arguments.length === 0) {
return {sampleSize: this._sampleSize, bgSettings: this._bgSettings, textSettings: this._textSettings};
}
if (typeof sampleSize !== 'number') {
textSettings = bgSettings;
bgSettings = sampleSize;
sampleSize = null;
}
this._sampleSize = sampleSize || this._sampleSize;
this._bgSettings = bgSettings;
this._textSettings = textSettings || this._textSettings;
this._graph._drawGraph();
return this;
},
/** Return to the parent graph.
@return {SVGGraph} The parent graph. */
end: function() {
return this._graph;
}
});
//==============================================================================
/** Round a number to a given number of decimal points.
@private
@param num {number} The original value.
@param dec {number} The number of decimal points to retain.
@return {number} The rounded number. */
function roundNumber(num, dec) {
return Math.round(num * Math.pow(10, dec)) / Math.pow(10, dec);
}
var barOptions = ['barWidth (number) - the width of each bar', 'barGap (number) - the gap between sets of bars'];
//------------------------------------------------------------------------------
/** Draw a standard grouped column bar chart.
@module SVGColumnChart */
function SVGColumnChart() {
}
$.extend(SVGColumnChart.prototype, {
/** Retrieve the display title for this chart type.
@return {string} Its title. */
title: function() {
return 'Basic column chart';
},
/** Retrieve a description of this chart type.
@return {string} Its description. */
description: function() {
return 'Compare sets of values as vertical bars with grouped categories.';
},
/** Retrieve a list of the options that may be set for this chart type.
@return {string[]} Its options list. */
options: function() {
return barOptions;
},
/** Actually draw the graph in this type's style.
@param graph {SVGGraph} The graph object. */
drawGraph: function(graph) {
graph._drawChartBackground(true);
var barWidth = graph._chartOptions.barWidth || 10;
var barGap = graph._chartOptions.barGap || 10;
var numSer = graph._series.length;
var numVal = (numSer ? (graph._series[0])._values.length : 0);
var dims = graph._getDims();
var xScale = dims[graph.W] / ((numSer * barWidth + barGap) * numVal + barGap);
var yScale = dims[graph.H] / (graph.yAxis._scale.max - graph.yAxis._scale.min);
this._chart = graph._wrapper.group(graph._chartCont, {class_: 'chart'});
for (var i = 0; i < numSer; i++) {
this._drawSeries(graph, i, numSer, barWidth, barGap, dims, xScale, yScale);
}
graph._drawTitle();
graph._drawAxes(true);
this._drawXAxis(graph, numSer, numVal, barWidth, barGap, dims, xScale);
graph._drawLegend();
},
/** Plot an individual series.
@private
@param graph {SVGGraph} The graph object.
@param cur {number} The current series index.
@param numSer {number} The number of points in this series.
@param barWidth {number} The width of each bar.
@param barGap {number} The space between bars.
@param dims {number[]} The dimensions of the drawing area.
@param xScale {number} The scaling factor in the horizontal direction.
@param yScale {number} The scaling factor in the vertical direction. */
_drawSeries: function(graph, cur, numSer, barWidth, barGap, dims, xScale, yScale) {
var series = graph._series[cur];
var g = graph._wrapper.group(this._chart,
$.extend({class_: 'series' + cur, fill: series._fill, stroke: series._stroke,
strokeWidth: series._strokeWidth}, series._settings || {}));
for (var i = 0; i < series._values.length; i++) {
var r = graph._wrapper.rect(g,
dims[graph.X] + xScale * (barGap + i * (numSer * barWidth + barGap) + (cur * barWidth)),
dims[graph.Y] + yScale * (graph.yAxis._scale.max - series._values[i]),
xScale * barWidth, yScale * series._values[i]);
graph._showStatus(r, series._name, series._values[i]);
}
},
/** Draw the x-axis and its ticks.
@private
@param graph {SVGGraph} The graph object.
@param numSer {number} The number of points in this series.
@param numVal {number} The current value index.
@param barWidth {number} The width of each bar.
@param barGap {number} The space between bars.
@param dims {number[]} The dimensions of the drawing area.
@param xScale {number} The scaling factor in the horizontal direction. */
_drawXAxis: function(graph, numSer, numVal, barWidth, barGap, dims, xScale) {
var axis = graph.xAxis;
if (axis._title) {
graph._wrapper.text(graph._chartCont, dims[graph.X] + dims[graph.W] / 2,
dims[graph.Y] + dims[graph.H] + axis._titleOffset,
axis._title, $.extend({textAnchor: 'middle'}, axis._titleFormat || {}));
}
var gl = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxis'}, axis._lineFormat));
var gt = graph._wrapper.group(graph._chartCont, $.extend({class_: 'xAxisLabels',
textAnchor: 'middle'}, axis._labelFormat));
graph._wrapper.line(gl, dims[graph.X], dims[graph.Y] + dims[graph.H],
dims[graph.X] + dims[graph.W], dims[graph.Y] + dims[graph.H]);
if (axis._ticks.major) {
var offsets = graph._getTickOffsets(axis, true);
for (var i = 1; i < numVal; i++) {
var x = dims[graph.X] + xScale * (barGap / 2 + i * (numSer * barWidth + barGap));
graph._wrapper.line(gl, x, dims[graph.Y] + dims[graph.H] + offsets[0] * axis._ticks.size,
x, dims[graph.Y] + dims[graph.H] + offsets[1] * axis._ticks.size);
}
for (var i = 0; i < numVal; i++) {
var x = dims[graph.X] + xScale * (barGap / 2 + (i + 0.5) * (numSer * barWidth + barGap));
graph._wrapper.text(gt, x, dims[graph.Y] + dims[graph.H] + 2 * axis._ticks.size,
(axis._labels ? axis._labels[i] : '' + i));
}
}
}
});
//------------------------------------------------------------------------------