|
0
|
1 /* Javascript plotting library for jQuery, v. 0.6.
|
|
|
2 *
|
|
|
3 * Released under the MIT license by IOLA, December 2007.
|
|
|
4 *
|
|
|
5 */
|
|
|
6
|
|
|
7 // first an inline dependency, jquery.colorhelpers.js, we inline it here
|
|
|
8 // for convenience
|
|
|
9
|
|
|
10 /* Plugin for jQuery for working with colors.
|
|
|
11 *
|
|
|
12 * Version 1.0.
|
|
|
13 *
|
|
|
14 * Inspiration from jQuery color animation plugin by John Resig.
|
|
|
15 *
|
|
|
16 * Released under the MIT license by Ole Laursen, October 2009.
|
|
|
17 *
|
|
|
18 * Examples:
|
|
|
19 *
|
|
|
20 * $.color.parse("#fff").scale('rgb', 0.25).add('a', -0.5).toString()
|
|
|
21 * var c = $.color.extract($("#mydiv"), 'background-color');
|
|
|
22 * console.log(c.r, c.g, c.b, c.a);
|
|
|
23 * $.color.make(100, 50, 25, 0.4).toString() // returns "rgba(100,50,25,0.4)"
|
|
|
24 *
|
|
|
25 * Note that .scale() and .add() work in-place instead of returning
|
|
|
26 * new objects.
|
|
|
27 */
|
|
|
28 (function(){jQuery.color={};jQuery.color.make=function(E,D,B,C){var F={};F.r=E||0;F.g=D||0;F.b=B||0;F.a=C!=null?C:1;F.add=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]+=H}return F.normalize()};F.scale=function(I,H){for(var G=0;G<I.length;++G){F[I.charAt(G)]*=H}return F.normalize()};F.toString=function(){if(F.a>=1){return"rgb("+[F.r,F.g,F.b].join(",")+")"}else{return"rgba("+[F.r,F.g,F.b,F.a].join(",")+")"}};F.normalize=function(){function G(I,J,H){return J<I?I:(J>H?H:J)}F.r=G(0,parseInt(F.r),255);F.g=G(0,parseInt(F.g),255);F.b=G(0,parseInt(F.b),255);F.a=G(0,F.a,1);return F};F.clone=function(){return jQuery.color.make(F.r,F.b,F.g,F.a)};return F.normalize()};jQuery.color.extract=function(C,B){var D;do{D=C.css(B).toLowerCase();if(D!=""&&D!="transparent"){break}C=C.parent()}while(!jQuery.nodeName(C.get(0),"body"));if(D=="rgba(0, 0, 0, 0)"){D="transparent"}return jQuery.color.parse(D)};jQuery.color.parse=function(E){var D,B=jQuery.color.make;if(D=/rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10))}if(D=/rgba\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(E)){return B(parseInt(D[1],10),parseInt(D[2],10),parseInt(D[3],10),parseFloat(D[4]))}if(D=/rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55)}if(D=/rgba\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\s*\)/.exec(E)){return B(parseFloat(D[1])*2.55,parseFloat(D[2])*2.55,parseFloat(D[3])*2.55,parseFloat(D[4]))}if(D=/#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(E)){return B(parseInt(D[1],16),parseInt(D[2],16),parseInt(D[3],16))}if(D=/#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(E)){return B(parseInt(D[1]+D[1],16),parseInt(D[2]+D[2],16),parseInt(D[3]+D[3],16))}var C=jQuery.trim(E).toLowerCase();if(C=="transparent"){return B(255,255,255,0)}else{D=A[C];return B(D[0],D[1],D[2])}};var A={aqua:[0,255,255],azure:[240,255,255],beige:[245,245,220],black:[0,0,0],blue:[0,0,255],brown:[165,42,42],cyan:[0,255,255],darkblue:[0,0,139],darkcyan:[0,139,139],darkgrey:[169,169,169],darkgreen:[0,100,0],darkkhaki:[189,183,107],darkmagenta:[139,0,139],darkolivegreen:[85,107,47],darkorange:[255,140,0],darkorchid:[153,50,204],darkred:[139,0,0],darksalmon:[233,150,122],darkviolet:[148,0,211],fuchsia:[255,0,255],gold:[255,215,0],green:[0,128,0],indigo:[75,0,130],khaki:[240,230,140],lightblue:[173,216,230],lightcyan:[224,255,255],lightgreen:[144,238,144],lightgrey:[211,211,211],lightpink:[255,182,193],lightyellow:[255,255,224],lime:[0,255,0],magenta:[255,0,255],maroon:[128,0,0],navy:[0,0,128],olive:[128,128,0],orange:[255,165,0],pink:[255,192,203],purple:[128,0,128],violet:[128,0,128],red:[255,0,0],silver:[192,192,192],white:[255,255,255],yellow:[255,255,0]}})();
|
|
|
29
|
|
|
30 // the actual Flot code
|
|
|
31 (function($) {
|
|
|
32 function Plot(placeholder, data_, options_, plugins) {
|
|
|
33 // data is on the form:
|
|
|
34 // [ series1, series2 ... ]
|
|
|
35 // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
|
|
|
36 // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label", ... }
|
|
|
37
|
|
|
38 var series = [],
|
|
|
39 options = {
|
|
|
40 // the color theme used for graphs
|
|
|
41 colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
|
|
|
42 legend: {
|
|
|
43 show: true,
|
|
|
44 noColumns: 1, // number of colums in legend table
|
|
|
45 labelFormatter: null, // fn: string -> string
|
|
|
46 labelBoxBorderColor: "#ccc", // border color for the little label boxes
|
|
|
47 container: null, // container (as jQuery object) to put legend in, null means default on top of graph
|
|
|
48 position: "ne", // position of default legend container within plot
|
|
|
49 margin: 5, // distance from grid edge to default legend container within plot
|
|
|
50 backgroundColor: null, // null means auto-detect
|
|
|
51 backgroundOpacity: 0.85 // set to 0 to avoid background
|
|
|
52 },
|
|
|
53 xaxis: {
|
|
|
54 mode: null, // null or "time"
|
|
|
55 transform: null, // null or f: number -> number to transform axis
|
|
|
56 inverseTransform: null, // if transform is set, this should be the inverse function
|
|
|
57 min: null, // min. value to show, null means set automatically
|
|
|
58 max: null, // max. value to show, null means set automatically
|
|
|
59 autoscaleMargin: null, // margin in % to add if auto-setting min/max
|
|
|
60 ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
|
|
|
61 tickFormatter: null, // fn: number -> string
|
|
|
62 labelWidth: null, // size of tick labels in pixels
|
|
|
63 labelHeight: null,
|
|
|
64
|
|
|
65 // mode specific options
|
|
|
66 tickDecimals: null, // no. of decimals, null means auto
|
|
|
67 tickSize: null, // number or [number, "unit"]
|
|
|
68 minTickSize: null, // number or [number, "unit"]
|
|
|
69 monthNames: null, // list of names of months
|
|
|
70 timeformat: null, // format string to use
|
|
|
71 twelveHourClock: false // 12 or 24 time in time mode
|
|
|
72 },
|
|
|
73 yaxis: {
|
|
|
74 autoscaleMargin: 0.02
|
|
|
75 },
|
|
|
76 x2axis: {
|
|
|
77 autoscaleMargin: null
|
|
|
78 },
|
|
|
79 y2axis: {
|
|
|
80 autoscaleMargin: 0.02
|
|
|
81 },
|
|
|
82 series: {
|
|
|
83 points: {
|
|
|
84 show: false,
|
|
|
85 radius: 3,
|
|
|
86 lineWidth: 2, // in pixels
|
|
|
87 fill: true,
|
|
|
88 fillColor: "#ffffff"
|
|
|
89 },
|
|
|
90 lines: {
|
|
|
91 // we don't put in show: false so we can see
|
|
|
92 // whether lines were actively disabled
|
|
|
93 lineWidth: 2, // in pixels
|
|
|
94 fill: false,
|
|
|
95 fillColor: null,
|
|
|
96 steps: false
|
|
|
97 },
|
|
|
98 bars: {
|
|
|
99 show: false,
|
|
|
100 lineWidth: 2, // in pixels
|
|
|
101 barWidth: 1, // in units of the x axis
|
|
|
102 fill: true,
|
|
|
103 fillColor: null,
|
|
|
104 align: "left", // or "center"
|
|
|
105 horizontal: false // when horizontal, left is now top
|
|
|
106 },
|
|
|
107 shadowSize: 3
|
|
|
108 },
|
|
|
109 grid: {
|
|
|
110 show: true,
|
|
|
111 aboveData: false,
|
|
|
112 color: "#545454", // primary color used for outline and labels
|
|
|
113 backgroundColor: null, // null for transparent, else color
|
|
|
114 tickColor: "rgba(0,0,0,0.15)", // color used for the ticks
|
|
|
115 labelMargin: 5, // in pixels
|
|
|
116 borderWidth: 2, // in pixels
|
|
|
117 borderColor: null, // set if different from the grid color
|
|
|
118 markings: null, // array of ranges or fn: axes -> array of ranges
|
|
|
119 markingsColor: "#f4f4f4",
|
|
|
120 markingsLineWidth: 2,
|
|
|
121 // interactive stuff
|
|
|
122 clickable: false,
|
|
|
123 hoverable: false,
|
|
|
124 autoHighlight: true, // highlight in case mouse is near
|
|
|
125 mouseActiveRadius: 10 // how far the mouse can be away to activate an item
|
|
|
126 },
|
|
|
127 hooks: {}
|
|
|
128 },
|
|
|
129 canvas = null, // the canvas for the plot itself
|
|
|
130 overlay = null, // canvas for interactive stuff on top of plot
|
|
|
131 eventHolder = null, // jQuery object that events should be bound to
|
|
|
132 ctx = null, octx = null,
|
|
|
133 axes = { xaxis: {}, yaxis: {}, x2axis: {}, y2axis: {} },
|
|
|
134 plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
|
|
|
135 canvasWidth = 0, canvasHeight = 0,
|
|
|
136 plotWidth = 0, plotHeight = 0,
|
|
|
137 hooks = {
|
|
|
138 processOptions: [],
|
|
|
139 processRawData: [],
|
|
|
140 processDatapoints: [],
|
|
|
141 draw: [],
|
|
|
142 bindEvents: [],
|
|
|
143 drawOverlay: []
|
|
|
144 },
|
|
|
145 plot = this;
|
|
|
146
|
|
|
147 // public functions
|
|
|
148 plot.setData = setData;
|
|
|
149 plot.setupGrid = setupGrid;
|
|
|
150 plot.draw = draw;
|
|
|
151 plot.getPlaceholder = function() { return placeholder; };
|
|
|
152 plot.getCanvas = function() { return canvas; };
|
|
|
153 plot.getPlotOffset = function() { return plotOffset; };
|
|
|
154 plot.width = function () { return plotWidth; };
|
|
|
155 plot.height = function () { return plotHeight; };
|
|
|
156 plot.offset = function () {
|
|
|
157 var o = eventHolder.offset();
|
|
|
158 o.left += plotOffset.left;
|
|
|
159 o.top += plotOffset.top;
|
|
|
160 return o;
|
|
|
161 };
|
|
|
162 plot.getData = function() { return series; };
|
|
|
163 plot.getAxes = function() { return axes; };
|
|
|
164 plot.getOptions = function() { return options; };
|
|
|
165 plot.highlight = highlight;
|
|
|
166 plot.unhighlight = unhighlight;
|
|
|
167 plot.triggerRedrawOverlay = triggerRedrawOverlay;
|
|
|
168 plot.pointOffset = function(point) {
|
|
|
169 return { left: parseInt(axisSpecToRealAxis(point, "xaxis").p2c(+point.x) + plotOffset.left),
|
|
|
170 top: parseInt(axisSpecToRealAxis(point, "yaxis").p2c(+point.y) + plotOffset.top) };
|
|
|
171 };
|
|
|
172
|
|
|
173
|
|
|
174 // public attributes
|
|
|
175 plot.hooks = hooks;
|
|
|
176
|
|
|
177 // initialize
|
|
|
178 initPlugins(plot);
|
|
|
179 parseOptions(options_);
|
|
|
180 constructCanvas();
|
|
|
181 setData(data_);
|
|
|
182 setupGrid();
|
|
|
183 draw();
|
|
|
184 bindEvents();
|
|
|
185
|
|
|
186
|
|
|
187 function executeHooks(hook, args) {
|
|
|
188 args = [plot].concat(args);
|
|
|
189 for (var i = 0; i < hook.length; ++i)
|
|
|
190 hook[i].apply(this, args);
|
|
|
191 }
|
|
|
192
|
|
|
193 function initPlugins() {
|
|
|
194 for (var i = 0; i < plugins.length; ++i) {
|
|
|
195 var p = plugins[i];
|
|
|
196 p.init(plot);
|
|
|
197 if (p.options)
|
|
|
198 $.extend(true, options, p.options);
|
|
|
199 }
|
|
|
200 }
|
|
|
201
|
|
|
202 function parseOptions(opts) {
|
|
|
203 $.extend(true, options, opts);
|
|
|
204 if (options.grid.borderColor == null)
|
|
|
205 options.grid.borderColor = options.grid.color;
|
|
|
206 // backwards compatibility, to be removed in future
|
|
|
207 if (options.xaxis.noTicks && options.xaxis.ticks == null)
|
|
|
208 options.xaxis.ticks = options.xaxis.noTicks;
|
|
|
209 if (options.yaxis.noTicks && options.yaxis.ticks == null)
|
|
|
210 options.yaxis.ticks = options.yaxis.noTicks;
|
|
|
211 if (options.grid.coloredAreas)
|
|
|
212 options.grid.markings = options.grid.coloredAreas;
|
|
|
213 if (options.grid.coloredAreasColor)
|
|
|
214 options.grid.markingsColor = options.grid.coloredAreasColor;
|
|
|
215 if (options.lines)
|
|
|
216 $.extend(true, options.series.lines, options.lines);
|
|
|
217 if (options.points)
|
|
|
218 $.extend(true, options.series.points, options.points);
|
|
|
219 if (options.bars)
|
|
|
220 $.extend(true, options.series.bars, options.bars);
|
|
|
221 if (options.shadowSize)
|
|
|
222 options.series.shadowSize = options.shadowSize;
|
|
|
223
|
|
|
224 for (var n in hooks)
|
|
|
225 if (options.hooks[n] && options.hooks[n].length)
|
|
|
226 hooks[n] = hooks[n].concat(options.hooks[n]);
|
|
|
227
|
|
|
228 executeHooks(hooks.processOptions, [options]);
|
|
|
229 }
|
|
|
230
|
|
|
231 function setData(d) {
|
|
|
232 series = parseData(d);
|
|
|
233 fillInSeriesOptions();
|
|
|
234 processData();
|
|
|
235 }
|
|
|
236
|
|
|
237 function parseData(d) {
|
|
|
238 var res = [];
|
|
|
239 for (var i = 0; i < d.length; ++i) {
|
|
|
240 var s = $.extend(true, {}, options.series);
|
|
|
241
|
|
|
242 if (d[i].data) {
|
|
|
243 s.data = d[i].data; // move the data instead of deep-copy
|
|
|
244 delete d[i].data;
|
|
|
245
|
|
|
246 $.extend(true, s, d[i]);
|
|
|
247
|
|
|
248 d[i].data = s.data;
|
|
|
249 }
|
|
|
250 else
|
|
|
251 s.data = d[i];
|
|
|
252 res.push(s);
|
|
|
253 }
|
|
|
254
|
|
|
255 return res;
|
|
|
256 }
|
|
|
257
|
|
|
258 function axisSpecToRealAxis(obj, attr) {
|
|
|
259 var a = obj[attr];
|
|
|
260 if (!a || a == 1)
|
|
|
261 return axes[attr];
|
|
|
262 if (typeof a == "number")
|
|
|
263 return axes[attr.charAt(0) + a + attr.slice(1)];
|
|
|
264 return a; // assume it's OK
|
|
|
265 }
|
|
|
266
|
|
|
267 function fillInSeriesOptions() {
|
|
|
268 var i;
|
|
|
269
|
|
|
270 // collect what we already got of colors
|
|
|
271 var neededColors = series.length,
|
|
|
272 usedColors = [],
|
|
|
273 assignedColors = [];
|
|
|
274 for (i = 0; i < series.length; ++i) {
|
|
|
275 var sc = series[i].color;
|
|
|
276 if (sc != null) {
|
|
|
277 --neededColors;
|
|
|
278 if (typeof sc == "number")
|
|
|
279 assignedColors.push(sc);
|
|
|
280 else
|
|
|
281 usedColors.push($.color.parse(series[i].color));
|
|
|
282 }
|
|
|
283 }
|
|
|
284
|
|
|
285 // we might need to generate more colors if higher indices
|
|
|
286 // are assigned
|
|
|
287 for (i = 0; i < assignedColors.length; ++i) {
|
|
|
288 neededColors = Math.max(neededColors, assignedColors[i] + 1);
|
|
|
289 }
|
|
|
290
|
|
|
291 // produce colors as needed
|
|
|
292 var colors = [], variation = 0;
|
|
|
293 i = 0;
|
|
|
294 while (colors.length < neededColors) {
|
|
|
295 var c;
|
|
|
296 if (options.colors.length == i) // check degenerate case
|
|
|
297 c = $.color.make(100, 100, 100);
|
|
|
298 else
|
|
|
299 c = $.color.parse(options.colors[i]);
|
|
|
300
|
|
|
301 // vary color if needed
|
|
|
302 var sign = variation % 2 == 1 ? -1 : 1;
|
|
|
303 c.scale('rgb', 1 + sign * Math.ceil(variation / 2) * 0.2)
|
|
|
304
|
|
|
305 // FIXME: if we're getting to close to something else,
|
|
|
306 // we should probably skip this one
|
|
|
307 colors.push(c);
|
|
|
308
|
|
|
309 ++i;
|
|
|
310 if (i >= options.colors.length) {
|
|
|
311 i = 0;
|
|
|
312 ++variation;
|
|
|
313 }
|
|
|
314 }
|
|
|
315
|
|
|
316 // fill in the options
|
|
|
317 var colori = 0, s;
|
|
|
318 for (i = 0; i < series.length; ++i) {
|
|
|
319 s = series[i];
|
|
|
320
|
|
|
321 // assign colors
|
|
|
322 if (s.color == null) {
|
|
|
323 s.color = colors[colori].toString();
|
|
|
324 ++colori;
|
|
|
325 }
|
|
|
326 else if (typeof s.color == "number")
|
|
|
327 s.color = colors[s.color].toString();
|
|
|
328
|
|
|
329 // turn on lines automatically in case nothing is set
|
|
|
330 if (s.lines.show == null) {
|
|
|
331 var v, show = true;
|
|
|
332 for (v in s)
|
|
|
333 if (s[v].show) {
|
|
|
334 show = false;
|
|
|
335 break;
|
|
|
336 }
|
|
|
337 if (show)
|
|
|
338 s.lines.show = true;
|
|
|
339 }
|
|
|
340
|
|
|
341 // setup axes
|
|
|
342 s.xaxis = axisSpecToRealAxis(s, "xaxis");
|
|
|
343 s.yaxis = axisSpecToRealAxis(s, "yaxis");
|
|
|
344 }
|
|
|
345 }
|
|
|
346
|
|
|
347 function processData() {
|
|
|
348 var topSentry = Number.POSITIVE_INFINITY,
|
|
|
349 bottomSentry = Number.NEGATIVE_INFINITY,
|
|
|
350 i, j, k, m, length,
|
|
|
351 s, points, ps, x, y, axis, val, f, p;
|
|
|
352
|
|
|
353 for (axis in axes) {
|
|
|
354 axes[axis].datamin = topSentry;
|
|
|
355 axes[axis].datamax = bottomSentry;
|
|
|
356 axes[axis].used = false;
|
|
|
357 }
|
|
|
358
|
|
|
359 function updateAxis(axis, min, max) {
|
|
|
360 if (min < axis.datamin)
|
|
|
361 axis.datamin = min;
|
|
|
362 if (max > axis.datamax)
|
|
|
363 axis.datamax = max;
|
|
|
364 }
|
|
|
365
|
|
|
366 for (i = 0; i < series.length; ++i) {
|
|
|
367 s = series[i];
|
|
|
368 s.datapoints = { points: [] };
|
|
|
369
|
|
|
370 executeHooks(hooks.processRawData, [ s, s.data, s.datapoints ]);
|
|
|
371 }
|
|
|
372
|
|
|
373 // first pass: clean and copy data
|
|
|
374 for (i = 0; i < series.length; ++i) {
|
|
|
375 s = series[i];
|
|
|
376
|
|
|
377 var data = s.data, format = s.datapoints.format;
|
|
|
378
|
|
|
379 if (!format) {
|
|
|
380 format = [];
|
|
|
381 // find out how to copy
|
|
|
382 format.push({ x: true, number: true, required: true });
|
|
|
383 format.push({ y: true, number: true, required: true });
|
|
|
384
|
|
|
385 if (s.bars.show)
|
|
|
386 format.push({ y: true, number: true, required: false, defaultValue: 0 });
|
|
|
387
|
|
|
388 s.datapoints.format = format;
|
|
|
389 }
|
|
|
390
|
|
|
391 if (s.datapoints.pointsize != null)
|
|
|
392 continue; // already filled in
|
|
|
393
|
|
|
394 if (s.datapoints.pointsize == null)
|
|
|
395 s.datapoints.pointsize = format.length;
|
|
|
396
|
|
|
397 ps = s.datapoints.pointsize;
|
|
|
398 points = s.datapoints.points;
|
|
|
399
|
|
|
400 insertSteps = s.lines.show && s.lines.steps;
|
|
|
401 s.xaxis.used = s.yaxis.used = true;
|
|
|
402
|
|
|
403 for (j = k = 0; j < data.length; ++j, k += ps) {
|
|
|
404 p = data[j];
|
|
|
405
|
|
|
406 var nullify = p == null;
|
|
|
407 if (!nullify) {
|
|
|
408 for (m = 0; m < ps; ++m) {
|
|
|
409 val = p[m];
|
|
|
410 f = format[m];
|
|
|
411
|
|
|
412 if (f) {
|
|
|
413 if (f.number && val != null) {
|
|
|
414 val = +val; // convert to number
|
|
|
415 if (isNaN(val))
|
|
|
416 val = null;
|
|
|
417 }
|
|
|
418
|
|
|
419 if (val == null) {
|
|
|
420 if (f.required)
|
|
|
421 nullify = true;
|
|
|
422
|
|
|
423 if (f.defaultValue != null)
|
|
|
424 val = f.defaultValue;
|
|
|
425 }
|
|
|
426 }
|
|
|
427
|
|
|
428 points[k + m] = val;
|
|
|
429 }
|
|
|
430 }
|
|
|
431
|
|
|
432 if (nullify) {
|
|
|
433 for (m = 0; m < ps; ++m) {
|
|
|
434 val = points[k + m];
|
|
|
435 if (val != null) {
|
|
|
436 f = format[m];
|
|
|
437 // extract min/max info
|
|
|
438 if (f.x)
|
|
|
439 updateAxis(s.xaxis, val, val);
|
|
|
440 if (f.y)
|
|
|
441 updateAxis(s.yaxis, val, val);
|
|
|
442 }
|
|
|
443 points[k + m] = null;
|
|
|
444 }
|
|
|
445 }
|
|
|
446 else {
|
|
|
447 // a little bit of line specific stuff that
|
|
|
448 // perhaps shouldn't be here, but lacking
|
|
|
449 // better means...
|
|
|
450 if (insertSteps && k > 0
|
|
|
451 && points[k - ps] != null
|
|
|
452 && points[k - ps] != points[k]
|
|
|
453 && points[k - ps + 1] != points[k + 1]) {
|
|
|
454 // copy the point to make room for a middle point
|
|
|
455 for (m = 0; m < ps; ++m)
|
|
|
456 points[k + ps + m] = points[k + m];
|
|
|
457
|
|
|
458 // middle point has same y
|
|
|
459 points[k + 1] = points[k - ps + 1];
|
|
|
460
|
|
|
461 // we've added a point, better reflect that
|
|
|
462 k += ps;
|
|
|
463 }
|
|
|
464 }
|
|
|
465 }
|
|
|
466 }
|
|
|
467
|
|
|
468 // give the hooks a chance to run
|
|
|
469 for (i = 0; i < series.length; ++i) {
|
|
|
470 s = series[i];
|
|
|
471
|
|
|
472 executeHooks(hooks.processDatapoints, [ s, s.datapoints]);
|
|
|
473 }
|
|
|
474
|
|
|
475 // second pass: find datamax/datamin for auto-scaling
|
|
|
476 for (i = 0; i < series.length; ++i) {
|
|
|
477 s = series[i];
|
|
|
478 points = s.datapoints.points,
|
|
|
479 ps = s.datapoints.pointsize;
|
|
|
480
|
|
|
481 var xmin = topSentry, ymin = topSentry,
|
|
|
482 xmax = bottomSentry, ymax = bottomSentry;
|
|
|
483
|
|
|
484 for (j = 0; j < points.length; j += ps) {
|
|
|
485 if (points[j] == null)
|
|
|
486 continue;
|
|
|
487
|
|
|
488 for (m = 0; m < ps; ++m) {
|
|
|
489 val = points[j + m];
|
|
|
490 f = format[m];
|
|
|
491 if (!f)
|
|
|
492 continue;
|
|
|
493
|
|
|
494 if (f.x) {
|
|
|
495 if (val < xmin)
|
|
|
496 xmin = val;
|
|
|
497 if (val > xmax)
|
|
|
498 xmax = val;
|
|
|
499 }
|
|
|
500 if (f.y) {
|
|
|
501 if (val < ymin)
|
|
|
502 ymin = val;
|
|
|
503 if (val > ymax)
|
|
|
504 ymax = val;
|
|
|
505 }
|
|
|
506 }
|
|
|
507 }
|
|
|
508
|
|
|
509 if (s.bars.show) {
|
|
|
510 // make sure we got room for the bar on the dancing floor
|
|
|
511 var delta = s.bars.align == "left" ? 0 : -s.bars.barWidth/2;
|
|
|
512 if (s.bars.horizontal) {
|
|
|
513 ymin += delta;
|
|
|
514 ymax += delta + s.bars.barWidth;
|
|
|
515 }
|
|
|
516 else {
|
|
|
517 xmin += delta;
|
|
|
518 xmax += delta + s.bars.barWidth;
|
|
|
519 }
|
|
|
520 }
|
|
|
521
|
|
|
522 updateAxis(s.xaxis, xmin, xmax);
|
|
|
523 updateAxis(s.yaxis, ymin, ymax);
|
|
|
524 }
|
|
|
525
|
|
|
526 for (axis in axes) {
|
|
|
527 if (axes[axis].datamin == topSentry)
|
|
|
528 axes[axis].datamin = null;
|
|
|
529 if (axes[axis].datamax == bottomSentry)
|
|
|
530 axes[axis].datamax = null;
|
|
|
531 }
|
|
|
532 }
|
|
|
533
|
|
|
534 function constructCanvas() {
|
|
|
535 function makeCanvas(width, height) {
|
|
|
536 var c = document.createElement('canvas');
|
|
|
537 c.width = width;
|
|
|
538 c.height = height;
|
|
|
539 if ($.browser.msie) // excanvas hack
|
|
|
540 c = window.G_vmlCanvasManager.initElement(c);
|
|
|
541 return c;
|
|
|
542 }
|
|
|
543
|
|
|
544 canvasWidth = placeholder.width();
|
|
|
545 canvasHeight = placeholder.height();
|
|
|
546 placeholder.html(""); // clear placeholder
|
|
|
547 if (placeholder.css("position") == 'static')
|
|
|
548 placeholder.css("position", "relative"); // for positioning labels and overlay
|
|
|
549
|
|
|
550 if (canvasWidth <= 0 || canvasHeight <= 0)
|
|
|
551 throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
|
|
|
552
|
|
|
553 if ($.browser.msie) // excanvas hack
|
|
|
554 window.G_vmlCanvasManager.init_(document); // make sure everything is setup
|
|
|
555
|
|
|
556 // the canvas
|
|
|
557 canvas = $(makeCanvas(canvasWidth, canvasHeight)).appendTo(placeholder).get(0);
|
|
|
558 ctx = canvas.getContext("2d");
|
|
|
559
|
|
|
560 // overlay canvas for interactive features
|
|
|
561 overlay = $(makeCanvas(canvasWidth, canvasHeight)).css({ position: 'absolute', left: 0, top: 0 }).appendTo(placeholder).get(0);
|
|
|
562 octx = overlay.getContext("2d");
|
|
|
563 octx.stroke();
|
|
|
564 }
|
|
|
565
|
|
|
566 function bindEvents() {
|
|
|
567 // we include the canvas in the event holder too, because IE 7
|
|
|
568 // sometimes has trouble with the stacking order
|
|
|
569 eventHolder = $([overlay, canvas]);
|
|
|
570
|
|
|
571 // bind events
|
|
|
572 if (options.grid.hoverable)
|
|
|
573 eventHolder.mousemove(onMouseMove);
|
|
|
574
|
|
|
575 if (options.grid.clickable)
|
|
|
576 eventHolder.click(onClick);
|
|
|
577
|
|
|
578 executeHooks(hooks.bindEvents, [eventHolder]);
|
|
|
579 }
|
|
|
580
|
|
|
581 function setupGrid() {
|
|
|
582 function setTransformationHelpers(axis, o) {
|
|
|
583 function identity(x) { return x; }
|
|
|
584
|
|
|
585 var s, m, t = o.transform || identity,
|
|
|
586 it = o.inverseTransform;
|
|
|
587
|
|
|
588 // add transformation helpers
|
|
|
589 if (axis == axes.xaxis || axis == axes.x2axis) {
|
|
|
590 // precompute how much the axis is scaling a point
|
|
|
591 // in canvas space
|
|
|
592 s = axis.scale = plotWidth / (t(axis.max) - t(axis.min));
|
|
|
593 m = t(axis.min);
|
|
|
594
|
|
|
595 // data point to canvas coordinate
|
|
|
596 if (t == identity) // slight optimization
|
|
|
597 axis.p2c = function (p) { return (p - m) * s; };
|
|
|
598 else
|
|
|
599 axis.p2c = function (p) { return (t(p) - m) * s; };
|
|
|
600 // canvas coordinate to data point
|
|
|
601 if (!it)
|
|
|
602 axis.c2p = function (c) { return m + c / s; };
|
|
|
603 else
|
|
|
604 axis.c2p = function (c) { return it(m + c / s); };
|
|
|
605 }
|
|
|
606 else {
|
|
|
607 s = axis.scale = plotHeight / (t(axis.max) - t(axis.min));
|
|
|
608 m = t(axis.max);
|
|
|
609
|
|
|
610 if (t == identity)
|
|
|
611 axis.p2c = function (p) { return (m - p) * s; };
|
|
|
612 else
|
|
|
613 axis.p2c = function (p) { return (m - t(p)) * s; };
|
|
|
614 if (!it)
|
|
|
615 axis.c2p = function (c) { return m - c / s; };
|
|
|
616 else
|
|
|
617 axis.c2p = function (c) { return it(m - c / s); };
|
|
|
618 }
|
|
|
619 }
|
|
|
620
|
|
|
621 function measureLabels(axis, axisOptions) {
|
|
|
622 var i, labels = [], l;
|
|
|
623
|
|
|
624 axis.labelWidth = axisOptions.labelWidth;
|
|
|
625 axis.labelHeight = axisOptions.labelHeight;
|
|
|
626
|
|
|
627 if (axis == axes.xaxis || axis == axes.x2axis) {
|
|
|
628 // to avoid measuring the widths of the labels, we
|
|
|
629 // construct fixed-size boxes and put the labels inside
|
|
|
630 // them, we don't need the exact figures and the
|
|
|
631 // fixed-size box content is easy to center
|
|
|
632 if (axis.labelWidth == null)
|
|
|
633 axis.labelWidth = canvasWidth / (axis.ticks.length > 0 ? axis.ticks.length : 1);
|
|
|
634
|
|
|
635 // measure x label heights
|
|
|
636 if (axis.labelHeight == null) {
|
|
|
637 labels = [];
|
|
|
638 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
639 l = axis.ticks[i].label;
|
|
|
640 if (l)
|
|
|
641 labels.push('<div class="tickLabel" style="float:left;width:' + axis.labelWidth + 'px">' + l + '</div>');
|
|
|
642 }
|
|
|
643
|
|
|
644 if (labels.length > 0) {
|
|
|
645 var dummyDiv = $('<div style="position:absolute;top:-10000px;width:10000px;font-size:smaller">'
|
|
|
646 + labels.join("") + '<div style="clear:left"></div></div>').appendTo(placeholder);
|
|
|
647 axis.labelHeight = dummyDiv.height();
|
|
|
648 dummyDiv.remove();
|
|
|
649 }
|
|
|
650 }
|
|
|
651 }
|
|
|
652 else if (axis.labelWidth == null || axis.labelHeight == null) {
|
|
|
653 // calculate y label dimensions
|
|
|
654 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
655 l = axis.ticks[i].label;
|
|
|
656 if (l)
|
|
|
657 labels.push('<div class="tickLabel">' + l + '</div>');
|
|
|
658 }
|
|
|
659
|
|
|
660 if (labels.length > 0) {
|
|
|
661 var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">'
|
|
|
662 + labels.join("") + '</div>').appendTo(placeholder);
|
|
|
663 if (axis.labelWidth == null)
|
|
|
664 axis.labelWidth = dummyDiv.width();
|
|
|
665 if (axis.labelHeight == null)
|
|
|
666 axis.labelHeight = dummyDiv.find("div").height();
|
|
|
667 dummyDiv.remove();
|
|
|
668 }
|
|
|
669
|
|
|
670 }
|
|
|
671
|
|
|
672 if (axis.labelWidth == null)
|
|
|
673 axis.labelWidth = 0;
|
|
|
674 if (axis.labelHeight == null)
|
|
|
675 axis.labelHeight = 0;
|
|
|
676 }
|
|
|
677
|
|
|
678 function setGridSpacing() {
|
|
|
679 // get the most space needed around the grid for things
|
|
|
680 // that may stick out
|
|
|
681 var maxOutset = options.grid.borderWidth;
|
|
|
682 for (i = 0; i < series.length; ++i)
|
|
|
683 maxOutset = Math.max(maxOutset, 2 * (series[i].points.radius + series[i].points.lineWidth/2));
|
|
|
684
|
|
|
685 plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = maxOutset;
|
|
|
686
|
|
|
687 var margin = options.grid.labelMargin + options.grid.borderWidth;
|
|
|
688
|
|
|
689 if (axes.xaxis.labelHeight > 0)
|
|
|
690 plotOffset.bottom = Math.max(maxOutset, axes.xaxis.labelHeight + margin);
|
|
|
691 if (axes.yaxis.labelWidth > 0)
|
|
|
692 plotOffset.left = Math.max(maxOutset, axes.yaxis.labelWidth + margin);
|
|
|
693 if (axes.x2axis.labelHeight > 0)
|
|
|
694 plotOffset.top = Math.max(maxOutset, axes.x2axis.labelHeight + margin);
|
|
|
695 if (axes.y2axis.labelWidth > 0)
|
|
|
696 plotOffset.right = Math.max(maxOutset, axes.y2axis.labelWidth + margin);
|
|
|
697
|
|
|
698 plotWidth = canvasWidth - plotOffset.left - plotOffset.right;
|
|
|
699 plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top;
|
|
|
700 }
|
|
|
701
|
|
|
702 var axis;
|
|
|
703 for (axis in axes)
|
|
|
704 setRange(axes[axis], options[axis]);
|
|
|
705
|
|
|
706 if (options.grid.show) {
|
|
|
707 for (axis in axes) {
|
|
|
708 prepareTickGeneration(axes[axis], options[axis]);
|
|
|
709 setTicks(axes[axis], options[axis]);
|
|
|
710 measureLabels(axes[axis], options[axis]);
|
|
|
711 }
|
|
|
712
|
|
|
713 setGridSpacing();
|
|
|
714 }
|
|
|
715 else {
|
|
|
716 plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = 0;
|
|
|
717 plotWidth = canvasWidth;
|
|
|
718 plotHeight = canvasHeight;
|
|
|
719 }
|
|
|
720
|
|
|
721 for (axis in axes)
|
|
|
722 setTransformationHelpers(axes[axis], options[axis]);
|
|
|
723
|
|
|
724 if (options.grid.show)
|
|
|
725 insertLabels();
|
|
|
726
|
|
|
727 insertLegend();
|
|
|
728 }
|
|
|
729
|
|
|
730 function setRange(axis, axisOptions) {
|
|
|
731 var min = +(axisOptions.min != null ? axisOptions.min : axis.datamin),
|
|
|
732 max = +(axisOptions.max != null ? axisOptions.max : axis.datamax),
|
|
|
733 delta = max - min;
|
|
|
734
|
|
|
735 if (delta == 0.0) {
|
|
|
736 // degenerate case
|
|
|
737 var widen = max == 0 ? 1 : 0.01;
|
|
|
738
|
|
|
739 if (axisOptions.min == null)
|
|
|
740 min -= widen;
|
|
|
741 // alway widen max if we couldn't widen min to ensure we
|
|
|
742 // don't fall into min == max which doesn't work
|
|
|
743 if (axisOptions.max == null || axisOptions.min != null)
|
|
|
744 max += widen;
|
|
|
745 }
|
|
|
746 else {
|
|
|
747 // consider autoscaling
|
|
|
748 var margin = axisOptions.autoscaleMargin;
|
|
|
749 if (margin != null) {
|
|
|
750 if (axisOptions.min == null) {
|
|
|
751 min -= delta * margin;
|
|
|
752 // make sure we don't go below zero if all values
|
|
|
753 // are positive
|
|
|
754 if (min < 0 && axis.datamin != null && axis.datamin >= 0)
|
|
|
755 min = 0;
|
|
|
756 }
|
|
|
757 if (axisOptions.max == null) {
|
|
|
758 max += delta * margin;
|
|
|
759 if (max > 0 && axis.datamax != null && axis.datamax <= 0)
|
|
|
760 max = 0;
|
|
|
761 }
|
|
|
762 }
|
|
|
763 }
|
|
|
764 axis.min = min;
|
|
|
765 axis.max = max;
|
|
|
766 }
|
|
|
767
|
|
|
768 function prepareTickGeneration(axis, axisOptions) {
|
|
|
769 // estimate number of ticks
|
|
|
770 var noTicks;
|
|
|
771 if (typeof axisOptions.ticks == "number" && axisOptions.ticks > 0)
|
|
|
772 noTicks = axisOptions.ticks;
|
|
|
773 else if (axis == axes.xaxis || axis == axes.x2axis)
|
|
|
774 // heuristic based on the model a*sqrt(x) fitted to
|
|
|
775 // some reasonable data points
|
|
|
776 noTicks = 0.3 * Math.sqrt(canvasWidth);
|
|
|
777 else
|
|
|
778 noTicks = 0.3 * Math.sqrt(canvasHeight);
|
|
|
779
|
|
|
780 var delta = (axis.max - axis.min) / noTicks,
|
|
|
781 size, generator, unit, formatter, i, magn, norm;
|
|
|
782
|
|
|
783 if (axisOptions.mode == "time") {
|
|
|
784 // pretty handling of time
|
|
|
785
|
|
|
786 // map of app. size of time units in milliseconds
|
|
|
787 var timeUnitSize = {
|
|
|
788 "second": 1000,
|
|
|
789 "minute": 60 * 1000,
|
|
|
790 "hour": 60 * 60 * 1000,
|
|
|
791 "day": 24 * 60 * 60 * 1000,
|
|
|
792 "month": 30 * 24 * 60 * 60 * 1000,
|
|
|
793 "year": 365.2425 * 24 * 60 * 60 * 1000
|
|
|
794 };
|
|
|
795
|
|
|
796
|
|
|
797 // the allowed tick sizes, after 1 year we use
|
|
|
798 // an integer algorithm
|
|
|
799 var spec = [
|
|
|
800 [1, "second"], [2, "second"], [5, "second"], [10, "second"],
|
|
|
801 [30, "second"],
|
|
|
802 [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
|
|
|
803 [30, "minute"],
|
|
|
804 [1, "hour"], [2, "hour"], [4, "hour"],
|
|
|
805 [8, "hour"], [12, "hour"],
|
|
|
806 [1, "day"], [2, "day"], [3, "day"],
|
|
|
807 [0.25, "month"], [0.5, "month"], [1, "month"],
|
|
|
808 [2, "month"], [3, "month"], [6, "month"],
|
|
|
809 [1, "year"]
|
|
|
810 ];
|
|
|
811
|
|
|
812 var minSize = 0;
|
|
|
813 if (axisOptions.minTickSize != null) {
|
|
|
814 if (typeof axisOptions.tickSize == "number")
|
|
|
815 minSize = axisOptions.tickSize;
|
|
|
816 else
|
|
|
817 minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]];
|
|
|
818 }
|
|
|
819
|
|
|
820 for (i = 0; i < spec.length - 1; ++i)
|
|
|
821 if (delta < (spec[i][0] * timeUnitSize[spec[i][1]]
|
|
|
822 + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
|
|
|
823 && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize)
|
|
|
824 break;
|
|
|
825 size = spec[i][0];
|
|
|
826 unit = spec[i][1];
|
|
|
827
|
|
|
828 // special-case the possibility of several years
|
|
|
829 if (unit == "year") {
|
|
|
830 magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
|
|
|
831 norm = (delta / timeUnitSize.year) / magn;
|
|
|
832 if (norm < 1.5)
|
|
|
833 size = 1;
|
|
|
834 else if (norm < 3)
|
|
|
835 size = 2;
|
|
|
836 else if (norm < 7.5)
|
|
|
837 size = 5;
|
|
|
838 else
|
|
|
839 size = 10;
|
|
|
840
|
|
|
841 size *= magn;
|
|
|
842 }
|
|
|
843
|
|
|
844 if (axisOptions.tickSize) {
|
|
|
845 size = axisOptions.tickSize[0];
|
|
|
846 unit = axisOptions.tickSize[1];
|
|
|
847 }
|
|
|
848
|
|
|
849 generator = function(axis) {
|
|
|
850 var ticks = [],
|
|
|
851 tickSize = axis.tickSize[0], unit = axis.tickSize[1],
|
|
|
852 d = new Date(axis.min);
|
|
|
853
|
|
|
854 var step = tickSize * timeUnitSize[unit];
|
|
|
855
|
|
|
856 if (unit == "second")
|
|
|
857 d.setUTCSeconds(floorInBase(d.getUTCSeconds(), tickSize));
|
|
|
858 if (unit == "minute")
|
|
|
859 d.setUTCMinutes(floorInBase(d.getUTCMinutes(), tickSize));
|
|
|
860 if (unit == "hour")
|
|
|
861 d.setUTCHours(floorInBase(d.getUTCHours(), tickSize));
|
|
|
862 if (unit == "month")
|
|
|
863 d.setUTCMonth(floorInBase(d.getUTCMonth(), tickSize));
|
|
|
864 if (unit == "year")
|
|
|
865 d.setUTCFullYear(floorInBase(d.getUTCFullYear(), tickSize));
|
|
|
866
|
|
|
867 // reset smaller components
|
|
|
868 d.setUTCMilliseconds(0);
|
|
|
869 if (step >= timeUnitSize.minute)
|
|
|
870 d.setUTCSeconds(0);
|
|
|
871 if (step >= timeUnitSize.hour)
|
|
|
872 d.setUTCMinutes(0);
|
|
|
873 if (step >= timeUnitSize.day)
|
|
|
874 d.setUTCHours(0);
|
|
|
875 if (step >= timeUnitSize.day * 4)
|
|
|
876 d.setUTCDate(1);
|
|
|
877 if (step >= timeUnitSize.year)
|
|
|
878 d.setUTCMonth(0);
|
|
|
879
|
|
|
880
|
|
|
881 var carry = 0, v = Number.NaN, prev;
|
|
|
882 do {
|
|
|
883 prev = v;
|
|
|
884 v = d.getTime();
|
|
|
885 ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
|
|
|
886 if (unit == "month") {
|
|
|
887 if (tickSize < 1) {
|
|
|
888 // a bit complicated - we'll divide the month
|
|
|
889 // up but we need to take care of fractions
|
|
|
890 // so we don't end up in the middle of a day
|
|
|
891 d.setUTCDate(1);
|
|
|
892 var start = d.getTime();
|
|
|
893 d.setUTCMonth(d.getUTCMonth() + 1);
|
|
|
894 var end = d.getTime();
|
|
|
895 d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
|
|
|
896 carry = d.getUTCHours();
|
|
|
897 d.setUTCHours(0);
|
|
|
898 }
|
|
|
899 else
|
|
|
900 d.setUTCMonth(d.getUTCMonth() + tickSize);
|
|
|
901 }
|
|
|
902 else if (unit == "year") {
|
|
|
903 d.setUTCFullYear(d.getUTCFullYear() + tickSize);
|
|
|
904 }
|
|
|
905 else
|
|
|
906 d.setTime(v + step);
|
|
|
907 } while (v < axis.max && v != prev);
|
|
|
908
|
|
|
909 return ticks;
|
|
|
910 };
|
|
|
911
|
|
|
912 formatter = function (v, axis) {
|
|
|
913 var d = new Date(v);
|
|
|
914
|
|
|
915 // first check global format
|
|
|
916 if (axisOptions.timeformat != null)
|
|
|
917 return $.plot.formatDate(d, axisOptions.timeformat, axisOptions.monthNames);
|
|
|
918
|
|
|
919 var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
|
|
|
920 var span = axis.max - axis.min;
|
|
|
921 var suffix = (axisOptions.twelveHourClock) ? " %p" : "";
|
|
|
922
|
|
|
923 if (t < timeUnitSize.minute)
|
|
|
924 fmt = "%h:%M:%S" + suffix;
|
|
|
925 else if (t < timeUnitSize.day) {
|
|
|
926 if (span < 2 * timeUnitSize.day)
|
|
|
927 fmt = "%h:%M" + suffix;
|
|
|
928 else
|
|
|
929 fmt = "%b %d %h:%M" + suffix;
|
|
|
930 }
|
|
|
931 else if (t < timeUnitSize.month)
|
|
|
932 fmt = "%b %d";
|
|
|
933 else if (t < timeUnitSize.year) {
|
|
|
934 if (span < timeUnitSize.year)
|
|
|
935 fmt = "%b";
|
|
|
936 else
|
|
|
937 fmt = "%b %y";
|
|
|
938 }
|
|
|
939 else
|
|
|
940 fmt = "%y";
|
|
|
941
|
|
|
942 return $.plot.formatDate(d, fmt, axisOptions.monthNames);
|
|
|
943 };
|
|
|
944 }
|
|
|
945 else {
|
|
|
946 // pretty rounding of base-10 numbers
|
|
|
947 var maxDec = axisOptions.tickDecimals;
|
|
|
948 var dec = -Math.floor(Math.log(delta) / Math.LN10);
|
|
|
949 if (maxDec != null && dec > maxDec)
|
|
|
950 dec = maxDec;
|
|
|
951
|
|
|
952 magn = Math.pow(10, -dec);
|
|
|
953 norm = delta / magn; // norm is between 1.0 and 10.0
|
|
|
954
|
|
|
955 if (norm < 1.5)
|
|
|
956 size = 1;
|
|
|
957 else if (norm < 3) {
|
|
|
958 size = 2;
|
|
|
959 // special case for 2.5, requires an extra decimal
|
|
|
960 if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
|
|
|
961 size = 2.5;
|
|
|
962 ++dec;
|
|
|
963 }
|
|
|
964 }
|
|
|
965 else if (norm < 7.5)
|
|
|
966 size = 5;
|
|
|
967 else
|
|
|
968 size = 10;
|
|
|
969
|
|
|
970 size *= magn;
|
|
|
971
|
|
|
972 if (axisOptions.minTickSize != null && size < axisOptions.minTickSize)
|
|
|
973 size = axisOptions.minTickSize;
|
|
|
974
|
|
|
975 if (axisOptions.tickSize != null)
|
|
|
976 size = axisOptions.tickSize;
|
|
|
977
|
|
|
978 axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec);
|
|
|
979
|
|
|
980 generator = function (axis) {
|
|
|
981 var ticks = [];
|
|
|
982
|
|
|
983 // spew out all possible ticks
|
|
|
984 var start = floorInBase(axis.min, axis.tickSize),
|
|
|
985 i = 0, v = Number.NaN, prev;
|
|
|
986 do {
|
|
|
987 prev = v;
|
|
|
988 v = start + i * axis.tickSize;
|
|
|
989 ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
|
|
|
990 ++i;
|
|
|
991 } while (v < axis.max && v != prev);
|
|
|
992 return ticks;
|
|
|
993 };
|
|
|
994
|
|
|
995 formatter = function (v, axis) {
|
|
|
996 return v.toFixed(axis.tickDecimals);
|
|
|
997 };
|
|
|
998 }
|
|
|
999
|
|
|
1000 axis.tickSize = unit ? [size, unit] : size;
|
|
|
1001 axis.tickGenerator = generator;
|
|
|
1002 if ($.isFunction(axisOptions.tickFormatter))
|
|
|
1003 axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); };
|
|
|
1004 else
|
|
|
1005 axis.tickFormatter = formatter;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 function setTicks(axis, axisOptions) {
|
|
|
1009 axis.ticks = [];
|
|
|
1010
|
|
|
1011 if (!axis.used)
|
|
|
1012 return;
|
|
|
1013
|
|
|
1014 if (axisOptions.ticks == null)
|
|
|
1015 axis.ticks = axis.tickGenerator(axis);
|
|
|
1016 else if (typeof axisOptions.ticks == "number") {
|
|
|
1017 if (axisOptions.ticks > 0)
|
|
|
1018 axis.ticks = axis.tickGenerator(axis);
|
|
|
1019 }
|
|
|
1020 else if (axisOptions.ticks) {
|
|
|
1021 var ticks = axisOptions.ticks;
|
|
|
1022
|
|
|
1023 if ($.isFunction(ticks))
|
|
|
1024 // generate the ticks
|
|
|
1025 ticks = ticks({ min: axis.min, max: axis.max });
|
|
|
1026
|
|
|
1027 // clean up the user-supplied ticks, copy them over
|
|
|
1028 var i, v;
|
|
|
1029 for (i = 0; i < ticks.length; ++i) {
|
|
|
1030 var label = null;
|
|
|
1031 var t = ticks[i];
|
|
|
1032 if (typeof t == "object") {
|
|
|
1033 v = t[0];
|
|
|
1034 if (t.length > 1)
|
|
|
1035 label = t[1];
|
|
|
1036 }
|
|
|
1037 else
|
|
|
1038 v = t;
|
|
|
1039 if (label == null)
|
|
|
1040 label = axis.tickFormatter(v, axis);
|
|
|
1041 axis.ticks[i] = { v: v, label: label };
|
|
|
1042 }
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) {
|
|
|
1046 // snap to ticks
|
|
|
1047 if (axisOptions.min == null)
|
|
|
1048 axis.min = Math.min(axis.min, axis.ticks[0].v);
|
|
|
1049 if (axisOptions.max == null && axis.ticks.length > 1)
|
|
|
1050 axis.max = Math.max(axis.max, axis.ticks[axis.ticks.length - 1].v);
|
|
|
1051 }
|
|
|
1052 }
|
|
|
1053
|
|
|
1054 function draw() {
|
|
|
1055 ctx.clearRect(0, 0, canvasWidth, canvasHeight);
|
|
|
1056
|
|
|
1057 var grid = options.grid;
|
|
|
1058
|
|
|
1059 if (grid.show && !grid.aboveData)
|
|
|
1060 drawGrid();
|
|
|
1061
|
|
|
1062 for (var i = 0; i < series.length; ++i)
|
|
|
1063 drawSeries(series[i]);
|
|
|
1064
|
|
|
1065 executeHooks(hooks.draw, [ctx]);
|
|
|
1066
|
|
|
1067 if (grid.show && grid.aboveData)
|
|
|
1068 drawGrid();
|
|
|
1069 }
|
|
|
1070
|
|
|
1071 function extractRange(ranges, coord) {
|
|
|
1072 var firstAxis = coord + "axis",
|
|
|
1073 secondaryAxis = coord + "2axis",
|
|
|
1074 axis, from, to, reverse;
|
|
|
1075
|
|
|
1076 if (ranges[firstAxis]) {
|
|
|
1077 axis = axes[firstAxis];
|
|
|
1078 from = ranges[firstAxis].from;
|
|
|
1079 to = ranges[firstAxis].to;
|
|
|
1080 }
|
|
|
1081 else if (ranges[secondaryAxis]) {
|
|
|
1082 axis = axes[secondaryAxis];
|
|
|
1083 from = ranges[secondaryAxis].from;
|
|
|
1084 to = ranges[secondaryAxis].to;
|
|
|
1085 }
|
|
|
1086 else {
|
|
|
1087 // backwards-compat stuff - to be removed in future
|
|
|
1088 axis = axes[firstAxis];
|
|
|
1089 from = ranges[coord + "1"];
|
|
|
1090 to = ranges[coord + "2"];
|
|
|
1091 }
|
|
|
1092
|
|
|
1093 // auto-reverse as an added bonus
|
|
|
1094 if (from != null && to != null && from > to)
|
|
|
1095 return { from: to, to: from, axis: axis };
|
|
|
1096
|
|
|
1097 return { from: from, to: to, axis: axis };
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 function drawGrid() {
|
|
|
1101 var i;
|
|
|
1102
|
|
|
1103 ctx.save();
|
|
|
1104 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1105
|
|
|
1106 // draw background, if any
|
|
|
1107 if (options.grid.backgroundColor) {
|
|
|
1108 ctx.fillStyle = getColorOrGradient(options.grid.backgroundColor, plotHeight, 0, "rgba(255, 255, 255, 0)");
|
|
|
1109 ctx.fillRect(0, 0, plotWidth, plotHeight);
|
|
|
1110 }
|
|
|
1111
|
|
|
1112 // draw markings
|
|
|
1113 var markings = options.grid.markings;
|
|
|
1114 if (markings) {
|
|
|
1115 if ($.isFunction(markings))
|
|
|
1116 // xmin etc. are backwards-compatible, to be removed in future
|
|
|
1117 markings = markings({ xmin: axes.xaxis.min, xmax: axes.xaxis.max, ymin: axes.yaxis.min, ymax: axes.yaxis.max, xaxis: axes.xaxis, yaxis: axes.yaxis, x2axis: axes.x2axis, y2axis: axes.y2axis });
|
|
|
1118
|
|
|
1119 for (i = 0; i < markings.length; ++i) {
|
|
|
1120 var m = markings[i],
|
|
|
1121 xrange = extractRange(m, "x"),
|
|
|
1122 yrange = extractRange(m, "y");
|
|
|
1123
|
|
|
1124 // fill in missing
|
|
|
1125 if (xrange.from == null)
|
|
|
1126 xrange.from = xrange.axis.min;
|
|
|
1127 if (xrange.to == null)
|
|
|
1128 xrange.to = xrange.axis.max;
|
|
|
1129 if (yrange.from == null)
|
|
|
1130 yrange.from = yrange.axis.min;
|
|
|
1131 if (yrange.to == null)
|
|
|
1132 yrange.to = yrange.axis.max;
|
|
|
1133
|
|
|
1134 // clip
|
|
|
1135 if (xrange.to < xrange.axis.min || xrange.from > xrange.axis.max ||
|
|
|
1136 yrange.to < yrange.axis.min || yrange.from > yrange.axis.max)
|
|
|
1137 continue;
|
|
|
1138
|
|
|
1139 xrange.from = Math.max(xrange.from, xrange.axis.min);
|
|
|
1140 xrange.to = Math.min(xrange.to, xrange.axis.max);
|
|
|
1141 yrange.from = Math.max(yrange.from, yrange.axis.min);
|
|
|
1142 yrange.to = Math.min(yrange.to, yrange.axis.max);
|
|
|
1143
|
|
|
1144 if (xrange.from == xrange.to && yrange.from == yrange.to)
|
|
|
1145 continue;
|
|
|
1146
|
|
|
1147 // then draw
|
|
|
1148 xrange.from = xrange.axis.p2c(xrange.from);
|
|
|
1149 xrange.to = xrange.axis.p2c(xrange.to);
|
|
|
1150 yrange.from = yrange.axis.p2c(yrange.from);
|
|
|
1151 yrange.to = yrange.axis.p2c(yrange.to);
|
|
|
1152
|
|
|
1153 if (xrange.from == xrange.to || yrange.from == yrange.to) {
|
|
|
1154 // draw line
|
|
|
1155 ctx.beginPath();
|
|
|
1156 ctx.strokeStyle = m.color || options.grid.markingsColor;
|
|
|
1157 ctx.lineWidth = m.lineWidth || options.grid.markingsLineWidth;
|
|
|
1158 //ctx.moveTo(Math.floor(xrange.from), yrange.from);
|
|
|
1159 //ctx.lineTo(Math.floor(xrange.to), yrange.to);
|
|
|
1160 ctx.moveTo(xrange.from, yrange.from);
|
|
|
1161 ctx.lineTo(xrange.to, yrange.to);
|
|
|
1162 ctx.stroke();
|
|
|
1163 }
|
|
|
1164 else {
|
|
|
1165 // fill area
|
|
|
1166 ctx.fillStyle = m.color || options.grid.markingsColor;
|
|
|
1167 ctx.fillRect(xrange.from, yrange.to,
|
|
|
1168 xrange.to - xrange.from,
|
|
|
1169 yrange.from - yrange.to);
|
|
|
1170 }
|
|
|
1171 }
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 // draw the inner grid
|
|
|
1175 ctx.lineWidth = 1;
|
|
|
1176 ctx.strokeStyle = options.grid.tickColor;
|
|
|
1177 ctx.beginPath();
|
|
|
1178 var v, axis = axes.xaxis;
|
|
|
1179 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
1180 v = axis.ticks[i].v;
|
|
|
1181 if (v <= axis.min || v >= axes.xaxis.max)
|
|
|
1182 continue; // skip those lying on the axes
|
|
|
1183
|
|
|
1184 ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 0);
|
|
|
1185 ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, plotHeight);
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 axis = axes.yaxis;
|
|
|
1189 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
1190 v = axis.ticks[i].v;
|
|
|
1191 if (v <= axis.min || v >= axis.max)
|
|
|
1192 continue;
|
|
|
1193
|
|
|
1194 ctx.moveTo(0, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
|
|
|
1195 ctx.lineTo(plotWidth, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 axis = axes.x2axis;
|
|
|
1199 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
1200 v = axis.ticks[i].v;
|
|
|
1201 if (v <= axis.min || v >= axis.max)
|
|
|
1202 continue;
|
|
|
1203
|
|
|
1204 ctx.moveTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, -5);
|
|
|
1205 ctx.lineTo(Math.floor(axis.p2c(v)) + ctx.lineWidth/2, 5);
|
|
|
1206 }
|
|
|
1207
|
|
|
1208 axis = axes.y2axis;
|
|
|
1209 for (i = 0; i < axis.ticks.length; ++i) {
|
|
|
1210 v = axis.ticks[i].v;
|
|
|
1211 if (v <= axis.min || v >= axis.max)
|
|
|
1212 continue;
|
|
|
1213
|
|
|
1214 ctx.moveTo(plotWidth-5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
|
|
|
1215 ctx.lineTo(plotWidth+5, Math.floor(axis.p2c(v)) + ctx.lineWidth/2);
|
|
|
1216 }
|
|
|
1217
|
|
|
1218 ctx.stroke();
|
|
|
1219
|
|
|
1220 if (options.grid.borderWidth) {
|
|
|
1221 // draw border
|
|
|
1222 var bw = options.grid.borderWidth;
|
|
|
1223 ctx.lineWidth = bw;
|
|
|
1224 ctx.strokeStyle = options.grid.borderColor;
|
|
|
1225 ctx.strokeRect(-bw/2, -bw/2, plotWidth + bw, plotHeight + bw);
|
|
|
1226 }
|
|
|
1227
|
|
|
1228 ctx.restore();
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 function insertLabels() {
|
|
|
1232 placeholder.find(".tickLabels").remove();
|
|
|
1233
|
|
|
1234 var html = ['<div class="tickLabels" style="font-size:smaller;color:' + options.grid.color + '">'];
|
|
|
1235
|
|
|
1236 function addLabels(axis, labelGenerator) {
|
|
|
1237 for (var i = 0; i < axis.ticks.length; ++i) {
|
|
|
1238 var tick = axis.ticks[i];
|
|
|
1239 if (!tick.label || tick.v < axis.min || tick.v > axis.max)
|
|
|
1240 continue;
|
|
|
1241 html.push(labelGenerator(tick, axis));
|
|
|
1242 }
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 var margin = options.grid.labelMargin + options.grid.borderWidth;
|
|
|
1246
|
|
|
1247 addLabels(axes.xaxis, function (tick, axis) {
|
|
|
1248 return '<div style="position:absolute;top:' + (plotOffset.top + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
|
|
|
1249 });
|
|
|
1250
|
|
|
1251
|
|
|
1252 addLabels(axes.yaxis, function (tick, axis) {
|
|
|
1253 return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;right:' + (plotOffset.right + plotWidth + margin) + 'px;width:' + axis.labelWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>";
|
|
|
1254 });
|
|
|
1255
|
|
|
1256 addLabels(axes.x2axis, function (tick, axis) {
|
|
|
1257 return '<div style="position:absolute;bottom:' + (plotOffset.bottom + plotHeight + margin) + 'px;left:' + Math.round(plotOffset.left + axis.p2c(tick.v) - axis.labelWidth/2) + 'px;width:' + axis.labelWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
|
|
|
1258 });
|
|
|
1259
|
|
|
1260 addLabels(axes.y2axis, function (tick, axis) {
|
|
|
1261 return '<div style="position:absolute;top:' + Math.round(plotOffset.top + axis.p2c(tick.v) - axis.labelHeight/2) + 'px;left:' + (plotOffset.left + plotWidth + margin) +'px;width:' + axis.labelWidth + 'px;text-align:left" class="tickLabel">' + tick.label + "</div>";
|
|
|
1262 });
|
|
|
1263
|
|
|
1264 html.push('</div>');
|
|
|
1265
|
|
|
1266 placeholder.append(html.join(""));
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 function drawSeries(series) {
|
|
|
1270 if (series.lines.show)
|
|
|
1271 drawSeriesLines(series);
|
|
|
1272 if (series.bars.show)
|
|
|
1273 drawSeriesBars(series);
|
|
|
1274 if (series.points.show)
|
|
|
1275 drawSeriesPoints(series);
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 function drawSeriesLines(series) {
|
|
|
1279 function plotLine(datapoints, xoffset, yoffset, axisx, axisy) {
|
|
|
1280 var points = datapoints.points,
|
|
|
1281 ps = datapoints.pointsize,
|
|
|
1282 prevx = null, prevy = null;
|
|
|
1283
|
|
|
1284 ctx.beginPath();
|
|
|
1285 for (var i = ps; i < points.length; i += ps) {
|
|
|
1286 var x1 = points[i - ps], y1 = points[i - ps + 1],
|
|
|
1287 x2 = points[i], y2 = points[i + 1];
|
|
|
1288
|
|
|
1289 if (x1 == null || x2 == null)
|
|
|
1290 continue;
|
|
|
1291
|
|
|
1292 // clip with ymin
|
|
|
1293 if (y1 <= y2 && y1 < axisy.min) {
|
|
|
1294 if (y2 < axisy.min)
|
|
|
1295 continue; // line segment is outside
|
|
|
1296 // compute new intersection point
|
|
|
1297 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1298 y1 = axisy.min;
|
|
|
1299 }
|
|
|
1300 else if (y2 <= y1 && y2 < axisy.min) {
|
|
|
1301 if (y1 < axisy.min)
|
|
|
1302 continue;
|
|
|
1303 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1304 y2 = axisy.min;
|
|
|
1305 }
|
|
|
1306
|
|
|
1307 // clip with ymax
|
|
|
1308 if (y1 >= y2 && y1 > axisy.max) {
|
|
|
1309 if (y2 > axisy.max)
|
|
|
1310 continue;
|
|
|
1311 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1312 y1 = axisy.max;
|
|
|
1313 }
|
|
|
1314 else if (y2 >= y1 && y2 > axisy.max) {
|
|
|
1315 if (y1 > axisy.max)
|
|
|
1316 continue;
|
|
|
1317 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1318 y2 = axisy.max;
|
|
|
1319 }
|
|
|
1320
|
|
|
1321 // clip with xmin
|
|
|
1322 if (x1 <= x2 && x1 < axisx.min) {
|
|
|
1323 if (x2 < axisx.min)
|
|
|
1324 continue;
|
|
|
1325 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1326 x1 = axisx.min;
|
|
|
1327 }
|
|
|
1328 else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
1329 if (x1 < axisx.min)
|
|
|
1330 continue;
|
|
|
1331 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1332 x2 = axisx.min;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 // clip with xmax
|
|
|
1336 if (x1 >= x2 && x1 > axisx.max) {
|
|
|
1337 if (x2 > axisx.max)
|
|
|
1338 continue;
|
|
|
1339 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1340 x1 = axisx.max;
|
|
|
1341 }
|
|
|
1342 else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
1343 if (x1 > axisx.max)
|
|
|
1344 continue;
|
|
|
1345 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1346 x2 = axisx.max;
|
|
|
1347 }
|
|
|
1348
|
|
|
1349 if (x1 != prevx || y1 != prevy)
|
|
|
1350 ctx.moveTo(axisx.p2c(x1) + xoffset, axisy.p2c(y1) + yoffset);
|
|
|
1351
|
|
|
1352 prevx = x2;
|
|
|
1353 prevy = y2;
|
|
|
1354 ctx.lineTo(axisx.p2c(x2) + xoffset, axisy.p2c(y2) + yoffset);
|
|
|
1355 }
|
|
|
1356 ctx.stroke();
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 function plotLineArea(datapoints, axisx, axisy) {
|
|
|
1360 var points = datapoints.points,
|
|
|
1361 ps = datapoints.pointsize,
|
|
|
1362 bottom = Math.min(Math.max(0, axisy.min), axisy.max),
|
|
|
1363 top, lastX = 0, areaOpen = false;
|
|
|
1364
|
|
|
1365 for (var i = ps; i < points.length; i += ps) {
|
|
|
1366 var x1 = points[i - ps], y1 = points[i - ps + 1],
|
|
|
1367 x2 = points[i], y2 = points[i + 1];
|
|
|
1368
|
|
|
1369 if (areaOpen && x1 != null && x2 == null) {
|
|
|
1370 // close area
|
|
|
1371 ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom));
|
|
|
1372 ctx.fill();
|
|
|
1373 areaOpen = false;
|
|
|
1374 continue;
|
|
|
1375 }
|
|
|
1376
|
|
|
1377 if (x1 == null || x2 == null)
|
|
|
1378 continue;
|
|
|
1379
|
|
|
1380 // clip x values
|
|
|
1381
|
|
|
1382 // clip with xmin
|
|
|
1383 if (x1 <= x2 && x1 < axisx.min) {
|
|
|
1384 if (x2 < axisx.min)
|
|
|
1385 continue;
|
|
|
1386 y1 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1387 x1 = axisx.min;
|
|
|
1388 }
|
|
|
1389 else if (x2 <= x1 && x2 < axisx.min) {
|
|
|
1390 if (x1 < axisx.min)
|
|
|
1391 continue;
|
|
|
1392 y2 = (axisx.min - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1393 x2 = axisx.min;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 // clip with xmax
|
|
|
1397 if (x1 >= x2 && x1 > axisx.max) {
|
|
|
1398 if (x2 > axisx.max)
|
|
|
1399 continue;
|
|
|
1400 y1 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1401 x1 = axisx.max;
|
|
|
1402 }
|
|
|
1403 else if (x2 >= x1 && x2 > axisx.max) {
|
|
|
1404 if (x1 > axisx.max)
|
|
|
1405 continue;
|
|
|
1406 y2 = (axisx.max - x1) / (x2 - x1) * (y2 - y1) + y1;
|
|
|
1407 x2 = axisx.max;
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 if (!areaOpen) {
|
|
|
1411 // open area
|
|
|
1412 ctx.beginPath();
|
|
|
1413 ctx.moveTo(axisx.p2c(x1), axisy.p2c(bottom));
|
|
|
1414 areaOpen = true;
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 // now first check the case where both is outside
|
|
|
1418 if (y1 >= axisy.max && y2 >= axisy.max) {
|
|
|
1419 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.max));
|
|
|
1420 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.max));
|
|
|
1421 lastX = x2;
|
|
|
1422 continue;
|
|
|
1423 }
|
|
|
1424 else if (y1 <= axisy.min && y2 <= axisy.min) {
|
|
|
1425 ctx.lineTo(axisx.p2c(x1), axisy.p2c(axisy.min));
|
|
|
1426 ctx.lineTo(axisx.p2c(x2), axisy.p2c(axisy.min));
|
|
|
1427 lastX = x2;
|
|
|
1428 continue;
|
|
|
1429 }
|
|
|
1430
|
|
|
1431 // else it's a bit more complicated, there might
|
|
|
1432 // be two rectangles and two triangles we need to fill
|
|
|
1433 // in; to find these keep track of the current x values
|
|
|
1434 var x1old = x1, x2old = x2;
|
|
|
1435
|
|
|
1436 // and clip the y values, without shortcutting
|
|
|
1437
|
|
|
1438 // clip with ymin
|
|
|
1439 if (y1 <= y2 && y1 < axisy.min && y2 >= axisy.min) {
|
|
|
1440 x1 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1441 y1 = axisy.min;
|
|
|
1442 }
|
|
|
1443 else if (y2 <= y1 && y2 < axisy.min && y1 >= axisy.min) {
|
|
|
1444 x2 = (axisy.min - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1445 y2 = axisy.min;
|
|
|
1446 }
|
|
|
1447
|
|
|
1448 // clip with ymax
|
|
|
1449 if (y1 >= y2 && y1 > axisy.max && y2 <= axisy.max) {
|
|
|
1450 x1 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1451 y1 = axisy.max;
|
|
|
1452 }
|
|
|
1453 else if (y2 >= y1 && y2 > axisy.max && y1 <= axisy.max) {
|
|
|
1454 x2 = (axisy.max - y1) / (y2 - y1) * (x2 - x1) + x1;
|
|
|
1455 y2 = axisy.max;
|
|
|
1456 }
|
|
|
1457
|
|
|
1458
|
|
|
1459 // if the x value was changed we got a rectangle
|
|
|
1460 // to fill
|
|
|
1461 if (x1 != x1old) {
|
|
|
1462 if (y1 <= axisy.min)
|
|
|
1463 top = axisy.min;
|
|
|
1464 else
|
|
|
1465 top = axisy.max;
|
|
|
1466
|
|
|
1467 ctx.lineTo(axisx.p2c(x1old), axisy.p2c(top));
|
|
|
1468 ctx.lineTo(axisx.p2c(x1), axisy.p2c(top));
|
|
|
1469 }
|
|
|
1470
|
|
|
1471 // fill the triangles
|
|
|
1472 ctx.lineTo(axisx.p2c(x1), axisy.p2c(y1));
|
|
|
1473 ctx.lineTo(axisx.p2c(x2), axisy.p2c(y2));
|
|
|
1474
|
|
|
1475 // fill the other rectangle if it's there
|
|
|
1476 if (x2 != x2old) {
|
|
|
1477 if (y2 <= axisy.min)
|
|
|
1478 top = axisy.min;
|
|
|
1479 else
|
|
|
1480 top = axisy.max;
|
|
|
1481
|
|
|
1482 ctx.lineTo(axisx.p2c(x2), axisy.p2c(top));
|
|
|
1483 ctx.lineTo(axisx.p2c(x2old), axisy.p2c(top));
|
|
|
1484 }
|
|
|
1485
|
|
|
1486 lastX = Math.max(x2, x2old);
|
|
|
1487 }
|
|
|
1488
|
|
|
1489 if (areaOpen) {
|
|
|
1490 ctx.lineTo(axisx.p2c(lastX), axisy.p2c(bottom));
|
|
|
1491 ctx.fill();
|
|
|
1492 }
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 ctx.save();
|
|
|
1496 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1497 ctx.lineJoin = "round";
|
|
|
1498
|
|
|
1499 var lw = series.lines.lineWidth,
|
|
|
1500 sw = series.shadowSize;
|
|
|
1501 // FIXME: consider another form of shadow when filling is turned on
|
|
|
1502 if (lw > 0 && sw > 0) {
|
|
|
1503 // draw shadow as a thick and thin line with transparency
|
|
|
1504 ctx.lineWidth = sw;
|
|
|
1505 ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
1506 // position shadow at angle from the mid of line
|
|
|
1507 var angle = Math.PI/18;
|
|
|
1508 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/2), Math.cos(angle) * (lw/2 + sw/2), series.xaxis, series.yaxis);
|
|
|
1509 ctx.lineWidth = sw/2;
|
|
|
1510 plotLine(series.datapoints, Math.sin(angle) * (lw/2 + sw/4), Math.cos(angle) * (lw/2 + sw/4), series.xaxis, series.yaxis);
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 ctx.lineWidth = lw;
|
|
|
1514 ctx.strokeStyle = series.color;
|
|
|
1515 var fillStyle = getFillStyle(series.lines, series.color, 0, plotHeight);
|
|
|
1516 if (fillStyle) {
|
|
|
1517 ctx.fillStyle = fillStyle;
|
|
|
1518 plotLineArea(series.datapoints, series.xaxis, series.yaxis);
|
|
|
1519 }
|
|
|
1520
|
|
|
1521 if (lw > 0)
|
|
|
1522 plotLine(series.datapoints, 0, 0, series.xaxis, series.yaxis);
|
|
|
1523 ctx.restore();
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 function drawSeriesPoints(series) {
|
|
|
1527 function plotPoints(datapoints, radius, fillStyle, offset, circumference, axisx, axisy) {
|
|
|
1528 var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
1529
|
|
|
1530 for (var i = 0; i < points.length; i += ps) {
|
|
|
1531 var x = points[i], y = points[i + 1];
|
|
|
1532 if (x == null || x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
1533 continue;
|
|
|
1534
|
|
|
1535 ctx.beginPath();
|
|
|
1536 ctx.arc(axisx.p2c(x), axisy.p2c(y) + offset, radius, 0, circumference, false);
|
|
|
1537 if (fillStyle) {
|
|
|
1538 ctx.fillStyle = fillStyle;
|
|
|
1539 ctx.fill();
|
|
|
1540 }
|
|
|
1541 ctx.stroke();
|
|
|
1542 }
|
|
|
1543 }
|
|
|
1544
|
|
|
1545 ctx.save();
|
|
|
1546 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1547
|
|
|
1548 var lw = series.lines.lineWidth,
|
|
|
1549 sw = series.shadowSize,
|
|
|
1550 radius = series.points.radius;
|
|
|
1551 if (lw > 0 && sw > 0) {
|
|
|
1552 // draw shadow in two steps
|
|
|
1553 var w = sw / 2;
|
|
|
1554 ctx.lineWidth = w;
|
|
|
1555 ctx.strokeStyle = "rgba(0,0,0,0.1)";
|
|
|
1556 plotPoints(series.datapoints, radius, null, w + w/2, Math.PI,
|
|
|
1557 series.xaxis, series.yaxis);
|
|
|
1558
|
|
|
1559 ctx.strokeStyle = "rgba(0,0,0,0.2)";
|
|
|
1560 plotPoints(series.datapoints, radius, null, w/2, Math.PI,
|
|
|
1561 series.xaxis, series.yaxis);
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 ctx.lineWidth = lw;
|
|
|
1565 ctx.strokeStyle = series.color;
|
|
|
1566 plotPoints(series.datapoints, radius,
|
|
|
1567 getFillStyle(series.points, series.color), 0, 2 * Math.PI,
|
|
|
1568 series.xaxis, series.yaxis);
|
|
|
1569 ctx.restore();
|
|
|
1570 }
|
|
|
1571
|
|
|
1572 function drawBar(x, y, b, barLeft, barRight, offset, fillStyleCallback, axisx, axisy, c, horizontal) {
|
|
|
1573 var left, right, bottom, top,
|
|
|
1574 drawLeft, drawRight, drawTop, drawBottom,
|
|
|
1575 tmp;
|
|
|
1576
|
|
|
1577 if (horizontal) {
|
|
|
1578 drawBottom = drawRight = drawTop = true;
|
|
|
1579 drawLeft = false;
|
|
|
1580 left = b;
|
|
|
1581 right = x;
|
|
|
1582 top = y + barLeft;
|
|
|
1583 bottom = y + barRight;
|
|
|
1584
|
|
|
1585 // account for negative bars
|
|
|
1586 if (right < left) {
|
|
|
1587 tmp = right;
|
|
|
1588 right = left;
|
|
|
1589 left = tmp;
|
|
|
1590 drawLeft = true;
|
|
|
1591 drawRight = false;
|
|
|
1592 }
|
|
|
1593 }
|
|
|
1594 else {
|
|
|
1595 drawLeft = drawRight = drawTop = true;
|
|
|
1596 drawBottom = false;
|
|
|
1597 left = x + barLeft;
|
|
|
1598 right = x + barRight;
|
|
|
1599 bottom = b;
|
|
|
1600 top = y;
|
|
|
1601
|
|
|
1602 // account for negative bars
|
|
|
1603 if (top < bottom) {
|
|
|
1604 tmp = top;
|
|
|
1605 top = bottom;
|
|
|
1606 bottom = tmp;
|
|
|
1607 drawBottom = true;
|
|
|
1608 drawTop = false;
|
|
|
1609 }
|
|
|
1610 }
|
|
|
1611
|
|
|
1612 // clip
|
|
|
1613 if (right < axisx.min || left > axisx.max ||
|
|
|
1614 top < axisy.min || bottom > axisy.max)
|
|
|
1615 return;
|
|
|
1616
|
|
|
1617 if (left < axisx.min) {
|
|
|
1618 left = axisx.min;
|
|
|
1619 drawLeft = false;
|
|
|
1620 }
|
|
|
1621
|
|
|
1622 if (right > axisx.max) {
|
|
|
1623 right = axisx.max;
|
|
|
1624 drawRight = false;
|
|
|
1625 }
|
|
|
1626
|
|
|
1627 if (bottom < axisy.min) {
|
|
|
1628 bottom = axisy.min;
|
|
|
1629 drawBottom = false;
|
|
|
1630 }
|
|
|
1631
|
|
|
1632 if (top > axisy.max) {
|
|
|
1633 top = axisy.max;
|
|
|
1634 drawTop = false;
|
|
|
1635 }
|
|
|
1636
|
|
|
1637 left = axisx.p2c(left);
|
|
|
1638 bottom = axisy.p2c(bottom);
|
|
|
1639 right = axisx.p2c(right);
|
|
|
1640 top = axisy.p2c(top);
|
|
|
1641
|
|
|
1642 // fill the bar
|
|
|
1643 if (fillStyleCallback) {
|
|
|
1644 c.beginPath();
|
|
|
1645 c.moveTo(left, bottom);
|
|
|
1646 c.lineTo(left, top);
|
|
|
1647 c.lineTo(right, top);
|
|
|
1648 c.lineTo(right, bottom);
|
|
|
1649 c.fillStyle = fillStyleCallback(bottom, top);
|
|
|
1650 c.fill();
|
|
|
1651 }
|
|
|
1652
|
|
|
1653 // draw outline
|
|
|
1654 if (drawLeft || drawRight || drawTop || drawBottom) {
|
|
|
1655 c.beginPath();
|
|
|
1656
|
|
|
1657 // FIXME: inline moveTo is buggy with excanvas
|
|
|
1658 c.moveTo(left, bottom + offset);
|
|
|
1659 if (drawLeft)
|
|
|
1660 c.lineTo(left, top + offset);
|
|
|
1661 else
|
|
|
1662 c.moveTo(left, top + offset);
|
|
|
1663 if (drawTop)
|
|
|
1664 c.lineTo(right, top + offset);
|
|
|
1665 else
|
|
|
1666 c.moveTo(right, top + offset);
|
|
|
1667 if (drawRight)
|
|
|
1668 c.lineTo(right, bottom + offset);
|
|
|
1669 else
|
|
|
1670 c.moveTo(right, bottom + offset);
|
|
|
1671 if (drawBottom)
|
|
|
1672 c.lineTo(left, bottom + offset);
|
|
|
1673 else
|
|
|
1674 c.moveTo(left, bottom + offset);
|
|
|
1675 c.stroke();
|
|
|
1676 }
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 function drawSeriesBars(series) {
|
|
|
1680 function plotBars(datapoints, barLeft, barRight, offset, fillStyleCallback, axisx, axisy) {
|
|
|
1681 var points = datapoints.points, ps = datapoints.pointsize;
|
|
|
1682
|
|
|
1683 for (var i = 0; i < points.length; i += ps) {
|
|
|
1684 if (points[i] == null)
|
|
|
1685 continue;
|
|
|
1686 drawBar(points[i], points[i + 1], points[i + 2], barLeft, barRight, offset, fillStyleCallback, axisx, axisy, ctx, series.bars.horizontal);
|
|
|
1687 }
|
|
|
1688 }
|
|
|
1689
|
|
|
1690 ctx.save();
|
|
|
1691 ctx.translate(plotOffset.left, plotOffset.top);
|
|
|
1692
|
|
|
1693 // FIXME: figure out a way to add shadows (for instance along the right edge)
|
|
|
1694 ctx.lineWidth = series.bars.lineWidth;
|
|
|
1695 ctx.strokeStyle = series.color;
|
|
|
1696 var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
|
|
|
1697 var fillStyleCallback = series.bars.fill ? function (bottom, top) { return getFillStyle(series.bars, series.color, bottom, top); } : null;
|
|
|
1698 plotBars(series.datapoints, barLeft, barLeft + series.bars.barWidth, 0, fillStyleCallback, series.xaxis, series.yaxis);
|
|
|
1699 ctx.restore();
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 function getFillStyle(filloptions, seriesColor, bottom, top) {
|
|
|
1703 var fill = filloptions.fill;
|
|
|
1704 if (!fill)
|
|
|
1705 return null;
|
|
|
1706
|
|
|
1707 if (filloptions.fillColor)
|
|
|
1708 return getColorOrGradient(filloptions.fillColor, bottom, top, seriesColor);
|
|
|
1709
|
|
|
1710 var c = $.color.parse(seriesColor);
|
|
|
1711 c.a = typeof fill == "number" ? fill : 0.4;
|
|
|
1712 c.normalize();
|
|
|
1713 return c.toString();
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 function insertLegend() {
|
|
|
1717 placeholder.find(".legend").remove();
|
|
|
1718
|
|
|
1719 if (!options.legend.show)
|
|
|
1720 return;
|
|
|
1721
|
|
|
1722 var fragments = [], rowStarted = false,
|
|
|
1723 lf = options.legend.labelFormatter, s, label;
|
|
|
1724 for (i = 0; i < series.length; ++i) {
|
|
|
1725 s = series[i];
|
|
|
1726 label = s.label;
|
|
|
1727 if (!label)
|
|
|
1728 continue;
|
|
|
1729
|
|
|
1730 if (i % options.legend.noColumns == 0) {
|
|
|
1731 if (rowStarted)
|
|
|
1732 fragments.push('</tr>');
|
|
|
1733 fragments.push('<tr>');
|
|
|
1734 rowStarted = true;
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 if (lf)
|
|
|
1738 label = lf(label, s);
|
|
|
1739
|
|
|
1740 fragments.push(
|
|
|
1741 '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:4px;height:0;border:5px solid ' + s.color + ';overflow:hidden"></div></div></td>' +
|
|
|
1742 '<td class="legendLabel">' + label + '</td>');
|
|
|
1743 }
|
|
|
1744 if (rowStarted)
|
|
|
1745 fragments.push('</tr>');
|
|
|
1746
|
|
|
1747 if (fragments.length == 0)
|
|
|
1748 return;
|
|
|
1749
|
|
|
1750 var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
|
|
|
1751 if (options.legend.container != null)
|
|
|
1752 $(options.legend.container).html(table);
|
|
|
1753 else {
|
|
|
1754 var pos = "",
|
|
|
1755 p = options.legend.position,
|
|
|
1756 m = options.legend.margin;
|
|
|
1757 if (m[0] == null)
|
|
|
1758 m = [m, m];
|
|
|
1759 if (p.charAt(0) == "n")
|
|
|
1760 pos += 'top:' + (m[1] + plotOffset.top) + 'px;';
|
|
|
1761 else if (p.charAt(0) == "s")
|
|
|
1762 pos += 'bottom:' + (m[1] + plotOffset.bottom) + 'px;';
|
|
|
1763 if (p.charAt(1) == "e")
|
|
|
1764 pos += 'right:' + (m[0] + plotOffset.right) + 'px;';
|
|
|
1765 else if (p.charAt(1) == "w")
|
|
|
1766 pos += 'left:' + (m[0] + plotOffset.left) + 'px;';
|
|
|
1767 var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(placeholder);
|
|
|
1768 if (options.legend.backgroundOpacity != 0.0) {
|
|
|
1769 // put in the transparent background
|
|
|
1770 // separately to avoid blended labels and
|
|
|
1771 // label boxes
|
|
|
1772 var c = options.legend.backgroundColor;
|
|
|
1773 if (c == null) {
|
|
|
1774 c = options.grid.backgroundColor;
|
|
|
1775 if (c && typeof c == "string")
|
|
|
1776 c = $.color.parse(c);
|
|
|
1777 else
|
|
|
1778 c = $.color.extract(legend, 'background-color');
|
|
|
1779 c.a = 1;
|
|
|
1780 c = c.toString();
|
|
|
1781 }
|
|
|
1782 var div = legend.children();
|
|
|
1783 $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
|
|
|
1784 }
|
|
|
1785 }
|
|
|
1786 }
|
|
|
1787
|
|
|
1788
|
|
|
1789 // interactive features
|
|
|
1790
|
|
|
1791 var highlights = [],
|
|
|
1792 redrawTimeout = null;
|
|
|
1793
|
|
|
1794 // returns the data item the mouse is over, or null if none is found
|
|
|
1795 function findNearbyItem(mouseX, mouseY, seriesFilter) {
|
|
|
1796 var maxDistance = options.grid.mouseActiveRadius,
|
|
|
1797 smallestDistance = maxDistance * maxDistance + 1,
|
|
|
1798 item = null, foundPoint = false, i, j;
|
|
|
1799
|
|
|
1800 for (i = 0; i < series.length; ++i) {
|
|
|
1801 if (!seriesFilter(series[i]))
|
|
|
1802 continue;
|
|
|
1803
|
|
|
1804 var s = series[i],
|
|
|
1805 axisx = s.xaxis,
|
|
|
1806 axisy = s.yaxis,
|
|
|
1807 points = s.datapoints.points,
|
|
|
1808 ps = s.datapoints.pointsize,
|
|
|
1809 mx = axisx.c2p(mouseX), // precompute some stuff to make the loop faster
|
|
|
1810 my = axisy.c2p(mouseY),
|
|
|
1811 maxx = maxDistance / axisx.scale,
|
|
|
1812 maxy = maxDistance / axisy.scale;
|
|
|
1813
|
|
|
1814 if (s.lines.show || s.points.show) {
|
|
|
1815 for (j = 0; j < points.length; j += ps) {
|
|
|
1816 var x = points[j], y = points[j + 1];
|
|
|
1817 if (x == null)
|
|
|
1818 continue;
|
|
|
1819
|
|
|
1820 // For points and lines, the cursor must be within a
|
|
|
1821 // certain distance to the data point
|
|
|
1822 if (x - mx > maxx || x - mx < -maxx ||
|
|
|
1823 y - my > maxy || y - my < -maxy)
|
|
|
1824 continue;
|
|
|
1825
|
|
|
1826 // We have to calculate distances in pixels, not in
|
|
|
1827 // data units, because the scales of the axes may be different
|
|
|
1828 var dx = Math.abs(axisx.p2c(x) - mouseX),
|
|
|
1829 dy = Math.abs(axisy.p2c(y) - mouseY),
|
|
|
1830 dist = dx * dx + dy * dy; // we save the sqrt
|
|
|
1831
|
|
|
1832 // use <= to ensure last point takes precedence
|
|
|
1833 // (last generally means on top of)
|
|
|
1834 if (dist <= smallestDistance) {
|
|
|
1835 smallestDistance = dist;
|
|
|
1836 item = [i, j / ps];
|
|
|
1837 }
|
|
|
1838 }
|
|
|
1839 }
|
|
|
1840
|
|
|
1841 if (s.bars.show && !item) { // no other point can be nearby
|
|
|
1842 var barLeft = s.bars.align == "left" ? 0 : -s.bars.barWidth/2,
|
|
|
1843 barRight = barLeft + s.bars.barWidth;
|
|
|
1844
|
|
|
1845 for (j = 0; j < points.length; j += ps) {
|
|
|
1846 var x = points[j], y = points[j + 1], b = points[j + 2];
|
|
|
1847 if (x == null)
|
|
|
1848 continue;
|
|
|
1849
|
|
|
1850 // for a bar graph, the cursor must be inside the bar
|
|
|
1851 if (series[i].bars.horizontal ?
|
|
|
1852 (mx <= Math.max(b, x) && mx >= Math.min(b, x) &&
|
|
|
1853 my >= y + barLeft && my <= y + barRight) :
|
|
|
1854 (mx >= x + barLeft && mx <= x + barRight &&
|
|
|
1855 my >= Math.min(b, y) && my <= Math.max(b, y)))
|
|
|
1856 item = [i, j / ps];
|
|
|
1857 }
|
|
|
1858 }
|
|
|
1859 }
|
|
|
1860
|
|
|
1861 if (item) {
|
|
|
1862 i = item[0];
|
|
|
1863 j = item[1];
|
|
|
1864 ps = series[i].datapoints.pointsize;
|
|
|
1865
|
|
|
1866 return { datapoint: series[i].datapoints.points.slice(j * ps, (j + 1) * ps),
|
|
|
1867 dataIndex: j,
|
|
|
1868 series: series[i],
|
|
|
1869 seriesIndex: i };
|
|
|
1870 }
|
|
|
1871
|
|
|
1872 return null;
|
|
|
1873 }
|
|
|
1874
|
|
|
1875 function onMouseMove(e) {
|
|
|
1876 if (options.grid.hoverable)
|
|
|
1877 triggerClickHoverEvent("plothover", e,
|
|
|
1878 function (s) { return s["hoverable"] != false; });
|
|
|
1879 }
|
|
|
1880
|
|
|
1881 function onClick(e) {
|
|
|
1882 triggerClickHoverEvent("plotclick", e,
|
|
|
1883 function (s) { return s["clickable"] != false; });
|
|
|
1884 }
|
|
|
1885
|
|
|
1886 // trigger click or hover event (they send the same parameters
|
|
|
1887 // so we share their code)
|
|
|
1888 function triggerClickHoverEvent(eventname, event, seriesFilter) {
|
|
|
1889 var offset = eventHolder.offset(),
|
|
|
1890 pos = { pageX: event.pageX, pageY: event.pageY },
|
|
|
1891 canvasX = event.pageX - offset.left - plotOffset.left,
|
|
|
1892 canvasY = event.pageY - offset.top - plotOffset.top;
|
|
|
1893
|
|
|
1894 if (axes.xaxis.used)
|
|
|
1895 pos.x = axes.xaxis.c2p(canvasX);
|
|
|
1896 if (axes.yaxis.used)
|
|
|
1897 pos.y = axes.yaxis.c2p(canvasY);
|
|
|
1898 if (axes.x2axis.used)
|
|
|
1899 pos.x2 = axes.x2axis.c2p(canvasX);
|
|
|
1900 if (axes.y2axis.used)
|
|
|
1901 pos.y2 = axes.y2axis.c2p(canvasY);
|
|
|
1902
|
|
|
1903 var item = findNearbyItem(canvasX, canvasY, seriesFilter);
|
|
|
1904
|
|
|
1905 if (item) {
|
|
|
1906 // fill in mouse pos for any listeners out there
|
|
|
1907 item.pageX = parseInt(item.series.xaxis.p2c(item.datapoint[0]) + offset.left + plotOffset.left);
|
|
|
1908 item.pageY = parseInt(item.series.yaxis.p2c(item.datapoint[1]) + offset.top + plotOffset.top);
|
|
|
1909 }
|
|
|
1910
|
|
|
1911 if (options.grid.autoHighlight) {
|
|
|
1912 // clear auto-highlights
|
|
|
1913 for (var i = 0; i < highlights.length; ++i) {
|
|
|
1914 var h = highlights[i];
|
|
|
1915 if (h.auto == eventname &&
|
|
|
1916 !(item && h.series == item.series && h.point == item.datapoint))
|
|
|
1917 unhighlight(h.series, h.point);
|
|
|
1918 }
|
|
|
1919
|
|
|
1920 if (item)
|
|
|
1921 highlight(item.series, item.datapoint, eventname);
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 placeholder.trigger(eventname, [ pos, item ]);
|
|
|
1925 }
|
|
|
1926
|
|
|
1927 function triggerRedrawOverlay() {
|
|
|
1928 if (!redrawTimeout)
|
|
|
1929 redrawTimeout = setTimeout(drawOverlay, 30);
|
|
|
1930 }
|
|
|
1931
|
|
|
1932 function drawOverlay() {
|
|
|
1933 redrawTimeout = null;
|
|
|
1934
|
|
|
1935 // draw highlights
|
|
|
1936 octx.save();
|
|
|
1937 octx.clearRect(0, 0, canvasWidth, canvasHeight);
|
|
|
1938 octx.translate(plotOffset.left, plotOffset.top);
|
|
|
1939
|
|
|
1940 var i, hi;
|
|
|
1941 for (i = 0; i < highlights.length; ++i) {
|
|
|
1942 hi = highlights[i];
|
|
|
1943
|
|
|
1944 if (hi.series.bars.show)
|
|
|
1945 drawBarHighlight(hi.series, hi.point);
|
|
|
1946 else
|
|
|
1947 drawPointHighlight(hi.series, hi.point);
|
|
|
1948 }
|
|
|
1949 octx.restore();
|
|
|
1950
|
|
|
1951 executeHooks(hooks.drawOverlay, [octx]);
|
|
|
1952 }
|
|
|
1953
|
|
|
1954 function highlight(s, point, auto) {
|
|
|
1955 if (typeof s == "number")
|
|
|
1956 s = series[s];
|
|
|
1957
|
|
|
1958 if (typeof point == "number")
|
|
|
1959 point = s.data[point];
|
|
|
1960
|
|
|
1961 var i = indexOfHighlight(s, point);
|
|
|
1962 if (i == -1) {
|
|
|
1963 highlights.push({ series: s, point: point, auto: auto });
|
|
|
1964
|
|
|
1965 triggerRedrawOverlay();
|
|
|
1966 }
|
|
|
1967 else if (!auto)
|
|
|
1968 highlights[i].auto = false;
|
|
|
1969 }
|
|
|
1970
|
|
|
1971 function unhighlight(s, point) {
|
|
|
1972 if (s == null && point == null) {
|
|
|
1973 highlights = [];
|
|
|
1974 triggerRedrawOverlay();
|
|
|
1975 }
|
|
|
1976
|
|
|
1977 if (typeof s == "number")
|
|
|
1978 s = series[s];
|
|
|
1979
|
|
|
1980 if (typeof point == "number")
|
|
|
1981 point = s.data[point];
|
|
|
1982
|
|
|
1983 var i = indexOfHighlight(s, point);
|
|
|
1984 if (i != -1) {
|
|
|
1985 highlights.splice(i, 1);
|
|
|
1986
|
|
|
1987 triggerRedrawOverlay();
|
|
|
1988 }
|
|
|
1989 }
|
|
|
1990
|
|
|
1991 function indexOfHighlight(s, p) {
|
|
|
1992 for (var i = 0; i < highlights.length; ++i) {
|
|
|
1993 var h = highlights[i];
|
|
|
1994 if (h.series == s && h.point[0] == p[0]
|
|
|
1995 && h.point[1] == p[1])
|
|
|
1996 return i;
|
|
|
1997 }
|
|
|
1998 return -1;
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 function drawPointHighlight(series, point) {
|
|
|
2002 var x = point[0], y = point[1],
|
|
|
2003 axisx = series.xaxis, axisy = series.yaxis;
|
|
|
2004
|
|
|
2005 if (x < axisx.min || x > axisx.max || y < axisy.min || y > axisy.max)
|
|
|
2006 return;
|
|
|
2007
|
|
|
2008 var pointRadius = series.points.radius + series.points.lineWidth / 2;
|
|
|
2009 octx.lineWidth = pointRadius;
|
|
|
2010 octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2011 var radius = 1.5 * pointRadius;
|
|
|
2012 octx.beginPath();
|
|
|
2013 octx.arc(axisx.p2c(x), axisy.p2c(y), radius, 0, 2 * Math.PI, false);
|
|
|
2014 octx.stroke();
|
|
|
2015 }
|
|
|
2016
|
|
|
2017 function drawBarHighlight(series, point) {
|
|
|
2018 octx.lineWidth = series.bars.lineWidth;
|
|
|
2019 octx.strokeStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2020 var fillStyle = $.color.parse(series.color).scale('a', 0.5).toString();
|
|
|
2021 var barLeft = series.bars.align == "left" ? 0 : -series.bars.barWidth/2;
|
|
|
2022 drawBar(point[0], point[1], point[2] || 0, barLeft, barLeft + series.bars.barWidth,
|
|
|
2023 0, function () { return fillStyle; }, series.xaxis, series.yaxis, octx, series.bars.horizontal);
|
|
|
2024 }
|
|
|
2025
|
|
|
2026 function getColorOrGradient(spec, bottom, top, defaultColor) {
|
|
|
2027 if (typeof spec == "string")
|
|
|
2028 return spec;
|
|
|
2029 else {
|
|
|
2030 // assume this is a gradient spec; IE currently only
|
|
|
2031 // supports a simple vertical gradient properly, so that's
|
|
|
2032 // what we support too
|
|
|
2033 var gradient = ctx.createLinearGradient(0, top, 0, bottom);
|
|
|
2034
|
|
|
2035 for (var i = 0, l = spec.colors.length; i < l; ++i) {
|
|
|
2036 var c = spec.colors[i];
|
|
|
2037 if (typeof c != "string") {
|
|
|
2038 c = $.color.parse(defaultColor).scale('rgb', c.brightness);
|
|
|
2039 c.a *= c.opacity;
|
|
|
2040 c = c.toString();
|
|
|
2041 }
|
|
|
2042 gradient.addColorStop(i / (l - 1), c);
|
|
|
2043 }
|
|
|
2044
|
|
|
2045 return gradient;
|
|
|
2046 }
|
|
|
2047 }
|
|
|
2048 }
|
|
|
2049
|
|
|
2050 $.plot = function(placeholder, data, options) {
|
|
|
2051 var plot = new Plot($(placeholder), data, options, $.plot.plugins);
|
|
|
2052 /*var t0 = new Date();
|
|
|
2053 var t1 = new Date();
|
|
|
2054 var tstr = "time used (msecs): " + (t1.getTime() - t0.getTime())
|
|
|
2055 if (window.console)
|
|
|
2056 console.log(tstr);
|
|
|
2057 else
|
|
|
2058 alert(tstr);*/
|
|
|
2059 return plot;
|
|
|
2060 };
|
|
|
2061
|
|
|
2062 $.plot.plugins = [];
|
|
|
2063
|
|
|
2064 // returns a string with the date d formatted according to fmt
|
|
|
2065 $.plot.formatDate = function(d, fmt, monthNames) {
|
|
|
2066 var leftPad = function(n) {
|
|
|
2067 n = "" + n;
|
|
|
2068 return n.length == 1 ? "0" + n : n;
|
|
|
2069 };
|
|
|
2070
|
|
|
2071 var r = [];
|
|
|
2072 var escape = false;
|
|
|
2073 var hours = d.getUTCHours();
|
|
|
2074 var isAM = hours < 12;
|
|
|
2075 if (monthNames == null)
|
|
|
2076 monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
|
|
|
2077
|
|
|
2078 if (fmt.search(/%p|%P/) != -1) {
|
|
|
2079 if (hours > 12) {
|
|
|
2080 hours = hours - 12;
|
|
|
2081 } else if (hours == 0) {
|
|
|
2082 hours = 12;
|
|
|
2083 }
|
|
|
2084 }
|
|
|
2085 for (var i = 0; i < fmt.length; ++i) {
|
|
|
2086 var c = fmt.charAt(i);
|
|
|
2087
|
|
|
2088 if (escape) {
|
|
|
2089 switch (c) {
|
|
|
2090 case 'h': c = "" + hours; break;
|
|
|
2091 case 'H': c = leftPad(hours); break;
|
|
|
2092 case 'M': c = leftPad(d.getUTCMinutes()); break;
|
|
|
2093 case 'S': c = leftPad(d.getUTCSeconds()); break;
|
|
|
2094 case 'd': c = "" + d.getUTCDate(); break;
|
|
|
2095 case 'm': c = "" + (d.getUTCMonth() + 1); break;
|
|
|
2096 case 'y': c = "" + d.getUTCFullYear(); break;
|
|
|
2097 case 'b': c = "" + monthNames[d.getUTCMonth()]; break;
|
|
|
2098 case 'p': c = (isAM) ? ("" + "am") : ("" + "pm"); break;
|
|
|
2099 case 'P': c = (isAM) ? ("" + "AM") : ("" + "PM"); break;
|
|
|
2100 }
|
|
|
2101 r.push(c);
|
|
|
2102 escape = false;
|
|
|
2103 }
|
|
|
2104 else {
|
|
|
2105 if (c == "%")
|
|
|
2106 escape = true;
|
|
|
2107 else
|
|
|
2108 r.push(c);
|
|
|
2109 }
|
|
|
2110 }
|
|
|
2111 return r.join("");
|
|
|
2112 };
|
|
|
2113
|
|
|
2114 // round to nearby lower multiple of base
|
|
|
2115 function floorInBase(n, base) {
|
|
|
2116 return base * Math.floor(n / base);
|
|
|
2117 }
|
|
|
2118
|
|
|
2119 })(jQuery);
|
