3 * Pure JavaScript plotting plugin using jQuery
8 * Copyright (c) 2009-2013 Chris Leonello
9 * jqPlot is currently available for use in all personal or commercial projects
10 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
11 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
12 * choose the license that best suits your project and use it accordingly.
14 * Although not required, the author would appreciate an email letting him
15 * know of any substantial use of jqPlot. You can reach the author at:
16 * chris at jqplot dot com or see http://www.jqplot.com/info.php .
18 * If you are feeling kind and generous, consider supporting the project by
19 * making a donation at: http://www.jqplot.com/donate.php .
21 * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
25 * http://hexmen.com/blog/2007/03/printf-sprintf/
26 * http://hexmen.com/js/sprintf.js
27 * The author (Ash Searle) has placed this code in the public domain:
28 * "This code is unrestricted: you are free to use it however you like."
34 * Class: $.jqplot.Cursor
35 * Plugin class representing the cursor as displayed on the plot.
37 $.jqplot.Cursor = function(options) {
41 // CSS spec for cursor style
42 this.style = 'crosshair';
43 this.previousCursor = 'auto';
45 // whether to show the cursor or not.
46 this.show = $.jqplot.config.enablePlugins;
48 // show a cursor position tooltip. Location of the tooltip
49 // will be controlled by followMouse and tooltipLocation.
50 this.showTooltip = true;
52 // Tooltip follows the mouse, it is not at a fixed location.
53 // Tooltip will show on the grid at the location given by
54 // tooltipLocation, offset from the grid edge by tooltipOffset.
55 this.followMouse = false;
56 // prop: tooltipLocation
57 // Where to position tooltip. If followMouse is true, this is
58 // relative to the cursor, otherwise, it is relative to the grid.
59 // One of 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
60 this.tooltipLocation = 'se';
61 // prop: tooltipOffset
62 // Pixel offset of tooltip from the grid boudaries or cursor center.
63 this.tooltipOffset = 6;
64 // prop: showTooltipGridPosition
65 // show the grid pixel coordinates of the mouse.
66 this.showTooltipGridPosition = false;
67 // prop: showTooltipUnitPosition
68 // show the unit (data) coordinates of the mouse.
69 this.showTooltipUnitPosition = true;
70 // prop: showTooltipDataPosition
71 // Used with showVerticalLine to show intersecting data points in the tooltip.
72 this.showTooltipDataPosition = false;
73 // prop: tooltipFormatString
74 // sprintf format string for the tooltip.
75 // Uses Ash Searle's javascript sprintf implementation
76 // found here: http://hexmen.com/blog/2007/03/printf-sprintf/
77 // See http://perldoc.perl.org/functions/sprintf.html for reference
78 // Note, if showTooltipDataPosition is true, the default tooltipFormatString
79 // will be set to the cursorLegendFormatString, not the default given here.
80 this.tooltipFormatString = '%.4P, %.4P';
81 // prop: useAxesFormatters
82 // Use the x and y axes formatters to format the text in the tooltip.
83 this.useAxesFormatters = true;
84 // prop: tooltipAxisGroups
85 // Show position for the specified axes.
86 // This is an array like [['xaxis', 'yaxis'], ['xaxis', 'y2axis']]
87 // Default is to compute automatically for all visible axes.
88 this.tooltipAxisGroups = [];
90 // Enable plot zooming.
92 // zoomProxy and zoomTarget properties are not directly set by user.
93 // They Will be set through call to zoomProxy method.
94 this.zoomProxy = false;
95 this.zoomTarget = false;
97 // Will expand zoom range to provide more rounded tick values.
98 // Works only with linear, log and date axes.
99 this.looseZoom = true;
101 // Will reset plot zoom if single click on plot without drag.
102 this.clickReset = false;
103 // prop: dblClickReset
104 // Will reset plot zoom if double click on plot without drag.
105 this.dblClickReset = true;
106 // prop: showVerticalLine
107 // draw a vertical line across the plot which follows the cursor.
108 // When the line is near a data point, a special legend and/or tooltip can
109 // be updated with the data values.
110 this.showVerticalLine = false;
111 // prop: showHorizontalLine
112 // draw a horizontal line across the plot which follows the cursor.
113 this.showHorizontalLine = false;
114 // prop: constrainZoomTo
115 // 'none', 'x' or 'y'
116 this.constrainZoomTo = 'none';
117 // // prop: autoscaleConstraint
118 // // when a constrained axis is specified, true will
119 // // auatoscale the adjacent axis.
120 // this.autoscaleConstraint = true;
121 this.shapeRenderer = new $.jqplot.ShapeRenderer();
122 this._zoom = {start:[], end:[], started: false, zooming:false, isZoomed:false, axes:{start:{}, end:{}}, gridpos:{}, datapos:{}};
126 // prop: intersectionThreshold
127 // pixel distance from data point or marker to consider cursor lines intersecting with point.
128 // If data point markers are not shown, this should be >= 1 or will often miss point intersections.
129 this.intersectionThreshold = 2;
130 // prop: showCursorLegend
131 // Replace the plot legend with an enhanced legend displaying intersection information.
132 this.showCursorLegend = false;
133 // prop: cursorLegendFormatString
134 // Format string used in the cursor legend. If showTooltipDataPosition is true,
135 // this will also be the default format string used by tooltipFormatString.
136 this.cursorLegendFormatString = $.jqplot.Cursor.cursorLegendFormatString;
137 // whether the cursor is over the grid or not.
138 this._oldHandlers = {onselectstart: null, ondrag: null, onmousedown: null};
139 // prop: constrainOutsideZoom
140 // True to limit actual zoom area to edges of grid, even when zooming
141 // outside of plot area. That is, can't zoom out by mousing outside plot.
142 this.constrainOutsideZoom = true;
143 // prop: showTooltipOutsideZoom
144 // True will keep updating the tooltip when zooming of the grid.
145 this.showTooltipOutsideZoom = false;
146 // true if mouse is over grid, false if not.
148 $.extend(true, this, options);
151 $.jqplot.Cursor.cursorLegendFormatString = '%s x:%s, y:%s';
153 // called with scope of plot
154 $.jqplot.Cursor.init = function (target, data, opts){
155 // add a cursor attribute to the plot
156 var options = opts || {};
157 this.plugins.cursor = new $.jqplot.Cursor(options.cursor);
158 var c = this.plugins.cursor;
161 $.jqplot.eventListenerHooks.push(['jqplotMouseEnter', handleMouseEnter]);
162 $.jqplot.eventListenerHooks.push(['jqplotMouseLeave', handleMouseLeave]);
163 $.jqplot.eventListenerHooks.push(['jqplotMouseMove', handleMouseMove]);
165 if (c.showCursorLegend) {
166 opts.legend = opts.legend || {};
167 opts.legend.renderer = $.jqplot.CursorLegendRenderer;
168 opts.legend.formatString = this.plugins.cursor.cursorLegendFormatString;
169 opts.legend.show = true;
173 $.jqplot.eventListenerHooks.push(['jqplotMouseDown', handleMouseDown]);
176 $.jqplot.eventListenerHooks.push(['jqplotClick', handleClick]);
179 if (c.dblClickReset) {
180 $.jqplot.eventListenerHooks.push(['jqplotDblClick', handleDblClick]);
184 this.resetZoom = function() {
185 var axes = this.axes;
187 for (var ax in axes) {
189 axes[ax]._ticks = [];
190 // fake out tick creation algorithm to make sure original auto
191 // computed format string is used if _overrideFormatString is true
192 if (c._zoom.axes[ax] !== undefined) {
193 axes[ax]._autoFormatString = c._zoom.axes[ax].tickFormatString;
199 var ctx = this.plugins.cursor.zoomCanvas._ctx;
200 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
203 this.plugins.cursor._zoom.isZoomed = false;
204 this.target.trigger('jqplotResetZoom', [this, this.plugins.cursor]);
208 if (c.showTooltipDataPosition) {
209 c.showTooltipUnitPosition = false;
210 c.showTooltipGridPosition = false;
211 if (options.cursor.tooltipFormatString == undefined) {
212 c.tooltipFormatString = $.jqplot.Cursor.cursorLegendFormatString;
218 // called with context of plot
219 $.jqplot.Cursor.postDraw = function() {
220 var c = this.plugins.cursor;
222 // Memory Leaks patch
224 c.zoomCanvas.resetCanvas();
228 if (c.cursorCanvas) {
229 c.cursorCanvas.resetCanvas();
230 c.cursorCanvas = null;
233 if (c._tooltipElem) {
234 c._tooltipElem.emptyForce();
235 c._tooltipElem = null;
240 c.zoomCanvas = new $.jqplot.GenericCanvas();
241 this.eventCanvas._elem.before(c.zoomCanvas.createElement(this._gridPadding, 'jqplot-zoom-canvas', this._plotDimensions, this));
242 c.zoomCanvas.setContext();
245 var elem = document.createElement('div');
246 c._tooltipElem = $(elem);
248 c._tooltipElem.addClass('jqplot-cursor-tooltip');
249 c._tooltipElem.css({position:'absolute', display:'none'});
253 c.zoomCanvas._elem.before(c._tooltipElem);
257 this.eventCanvas._elem.before(c._tooltipElem);
260 if (c.showVerticalLine || c.showHorizontalLine) {
261 c.cursorCanvas = new $.jqplot.GenericCanvas();
262 this.eventCanvas._elem.before(c.cursorCanvas.createElement(this._gridPadding, 'jqplot-cursor-canvas', this._plotDimensions, this));
263 c.cursorCanvas.setContext();
266 // if we are showing the positions in unit coordinates, and no axes groups
267 // were specified, create a default set.
268 if (c.showTooltipUnitPosition){
269 if (c.tooltipAxisGroups.length === 0) {
270 var series = this.series;
273 for (var i=0; i<series.length; i++) {
275 var ax = s.xaxis+','+s.yaxis;
276 if ($.inArray(ax, temp) == -1) {
280 for (var i=0; i<temp.length; i++) {
281 c.tooltipAxisGroups.push(temp[i].split(','));
289 // method: $.jqplot.Cursor.zoomProxy
290 // links targetPlot to controllerPlot so that plot zooming of
291 // targetPlot will be controlled by zooming on the controllerPlot.
292 // controllerPlot will not actually zoom, but acts as an
293 // overview plot. Note, the zoom options must be set to true for
294 // zoomProxy to work.
295 $.jqplot.Cursor.zoomProxy = function(targetPlot, controllerPlot) {
296 var tc = targetPlot.plugins.cursor;
297 var cc = controllerPlot.plugins.cursor;
298 tc.zoomTarget = true;
301 tc.dblClickReset = false;
305 controllerPlot.target.bind('jqplotZoom', plotZoom);
306 controllerPlot.target.bind('jqplotResetZoom', plotReset);
308 function plotZoom(ev, gridpos, datapos, plot, cursor) {
309 tc.doZoom(gridpos, datapos, targetPlot, cursor);
312 function plotReset(ev, plot, cursor) {
313 targetPlot.resetZoom();
317 $.jqplot.Cursor.prototype.resetZoom = function(plot, cursor) {
318 var axes = plot.axes;
319 var cax = cursor._zoom.axes;
320 if (!plot.plugins.cursor.zoomProxy && cursor._zoom.isZoomed) {
321 for (var ax in axes) {
322 // axes[ax]._ticks = [];
323 // axes[ax].min = cax[ax].min;
324 // axes[ax].max = cax[ax].max;
325 // axes[ax].numberTicks = cax[ax].numberTicks;
326 // axes[ax].tickInterval = cax[ax].tickInterval;
328 // axes[ax].daTickInterval = cax[ax].daTickInterval;
330 axes[ax]._ticks = [];
331 // fake out tick creation algorithm to make sure original auto
332 // computed format string is used if _overrideFormatString is true
333 axes[ax]._autoFormatString = cax[ax].tickFormatString;
336 cursor._zoom.isZoomed = false;
339 var ctx = cursor.zoomCanvas._ctx;
340 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
343 plot.target.trigger('jqplotResetZoom', [plot, cursor]);
346 $.jqplot.Cursor.resetZoom = function(plot) {
350 $.jqplot.Cursor.prototype.doZoom = function (gridpos, datapos, plot, cursor) {
352 var axes = plot.axes;
353 var zaxes = c._zoom.axes;
354 var start = zaxes.start;
356 var min, max, dp, span,
357 newmin, newmax, curax, _numberTicks, ret;
358 var ctx = plot.plugins.cursor.zoomCanvas._ctx;
359 // don't zoom if zoom area is too small (in pixels)
360 if ((c.constrainZoomTo == 'none' && Math.abs(gridpos.x - c._zoom.start[0]) > 6 && Math.abs(gridpos.y - c._zoom.start[1]) > 6) || (c.constrainZoomTo == 'x' && Math.abs(gridpos.x - c._zoom.start[0]) > 6) || (c.constrainZoomTo == 'y' && Math.abs(gridpos.y - c._zoom.start[1]) > 6)) {
361 if (!plot.plugins.cursor.zoomProxy) {
362 for (var ax in datapos) {
363 // make a copy of the original axes to revert back.
364 if (c._zoom.axes[ax] == undefined) {
365 c._zoom.axes[ax] = {};
366 c._zoom.axes[ax].numberTicks = axes[ax].numberTicks;
367 c._zoom.axes[ax].tickInterval = axes[ax].tickInterval;
369 c._zoom.axes[ax].daTickInterval = axes[ax].daTickInterval;
370 c._zoom.axes[ax].min = axes[ax].min;
371 c._zoom.axes[ax].max = axes[ax].max;
372 c._zoom.axes[ax].tickFormatString = (axes[ax].tickOptions != null) ? axes[ax].tickOptions.formatString : '';
376 if ((c.constrainZoomTo == 'none') || (c.constrainZoomTo == 'x' && ax.charAt(0) == 'x') || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'y')) {
379 if (dp > start[ax]) {
384 span = start[ax] - dp;
393 // if aligning this axis, use number of ticks from previous axis.
394 // Do I need to reset somehow if alignTicks is changed and then graph is replotted??
395 if (curax.alignTicks) {
396 if (curax.name === 'x2axis' && plot.axes.xaxis.show) {
397 _numberTicks = plot.axes.xaxis.numberTicks;
399 else if (curax.name.charAt(0) === 'y' && curax.name !== 'yaxis' && curax.name !== 'yMidAxis' && plot.axes.yaxis.show) {
400 _numberTicks = plot.axes.yaxis.numberTicks;
404 if (this.looseZoom && (axes[ax].renderer.constructor === $.jqplot.LinearAxisRenderer || axes[ax].renderer.constructor === $.jqplot.LogAxisRenderer )) { //} || axes[ax].renderer.constructor === $.jqplot.DateAxisRenderer)) {
406 ret = $.jqplot.LinearTickGenerator(newmin, newmax, curax._scalefact, _numberTicks);
408 // if new minimum is less than "true" minimum of axis display, adjust it
409 if (axes[ax].tickInset && ret[0] < axes[ax].min + axes[ax].tickInset * axes[ax].tickInterval) {
414 // if new maximum is greater than "true" max of axis display, adjust it
415 if (axes[ax].tickInset && ret[1] > axes[ax].max - axes[ax].tickInset * axes[ax].tickInterval) {
420 // for log axes, don't fall below current minimum, this will look bad and can't have 0 in range anyway.
421 if (axes[ax].renderer.constructor === $.jqplot.LogAxisRenderer && ret[0] < axes[ax].min) {
422 // remove a tick and shift min up
427 axes[ax].min = ret[0];
428 axes[ax].max = ret[1];
429 axes[ax]._autoFormatString = ret[3];
430 axes[ax].numberTicks = ret[2];
431 axes[ax].tickInterval = ret[4];
433 axes[ax].daTickInterval = [ret[4]/1000, 'seconds'];
436 axes[ax].min = newmin;
437 axes[ax].max = newmax;
438 axes[ax].tickInterval = null;
439 axes[ax].numberTicks = null;
441 axes[ax].daTickInterval = null;
444 axes[ax]._ticks = [];
448 // if ((c.constrainZoomTo == 'x' && ax.charAt(0) == 'y' && c.autoscaleConstraint) || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'x' && c.autoscaleConstraint)) {
451 // axes[ax].max == null;
452 // axes[ax].min = null;
456 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
458 c._zoom.isZoomed = true;
461 plot.target.trigger('jqplotZoom', [gridpos, datapos, plot, cursor]);
465 $.jqplot.preInitHooks.push($.jqplot.Cursor.init);
466 $.jqplot.postDrawHooks.push($.jqplot.Cursor.postDraw);
468 function updateTooltip(gridpos, datapos, plot) {
469 var c = plot.plugins.cursor;
472 if (c.showTooltipGridPosition) {
473 s = gridpos.x+', '+gridpos.y;
476 if (c.showTooltipUnitPosition) {
478 for (var i=0; i<c.tooltipAxisGroups.length; i++) {
479 g = c.tooltipAxisGroups[i];
483 if (c.useAxesFormatters) {
484 for (var j=0; j<g.length; j++) {
488 var af = plot.axes[g[j]]._ticks[0].formatter;
489 var afstr = plot.axes[g[j]]._ticks[0].formatString;
490 s += af(afstr, datapos[g[j]]);
494 s += $.jqplot.sprintf(c.tooltipFormatString, datapos[g[0]], datapos[g[1]]);
500 if (c.showTooltipDataPosition) {
501 var series = plot.series;
502 var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
505 for (var i = 0; i< series.length; i++) {
506 if (series[i].show) {
507 var idx = series[i].index;
508 var label = series[i].label.toString();
509 var cellid = $.inArray(idx, ret.indices);
513 var data = ret.data[cellid].data;
514 if (c.useAxesFormatters) {
515 var xf = series[i]._xaxis._ticks[0].formatter;
516 var yf = series[i]._yaxis._ticks[0].formatter;
517 var xfstr = series[i]._xaxis._ticks[0].formatString;
518 var yfstr = series[i]._yaxis._ticks[0].formatString;
519 sx = xf(xfstr, data[0]);
520 sy = yf(yfstr, data[1]);
529 s += $.jqplot.sprintf(c.tooltipFormatString, label, sx, sy);
536 c._tooltipElem.html(s);
539 function moveLine(gridpos, plot) {
540 var c = plot.plugins.cursor;
541 var ctx = c.cursorCanvas._ctx;
542 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
543 if (c.showVerticalLine) {
544 c.shapeRenderer.draw(ctx, [[gridpos.x, 0], [gridpos.x, ctx.canvas.height]]);
546 if (c.showHorizontalLine) {
547 c.shapeRenderer.draw(ctx, [[0, gridpos.y], [ctx.canvas.width, gridpos.y]]);
549 var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
550 if (c.showCursorLegend) {
551 var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
552 for (var i=0; i<cells.length; i++) {
553 var idx = $(cells[i]).data('seriesIndex');
554 var series = plot.series[idx];
555 var label = series.label.toString();
556 var cellid = $.inArray(idx, ret.indices);
560 var data = ret.data[cellid].data;
561 if (c.useAxesFormatters) {
562 var xf = series._xaxis._ticks[0].formatter;
563 var yf = series._yaxis._ticks[0].formatter;
564 var xfstr = series._xaxis._ticks[0].formatString;
565 var yfstr = series._yaxis._ticks[0].formatString;
566 sx = xf(xfstr, data[0]);
567 sy = yf(yfstr, data[1]);
574 if (plot.legend.escapeHtml) {
575 $(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
578 $(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
585 function getIntersectingPoints(plot, x, y) {
586 var ret = {indices:[], data:[]};
587 var s, i, d0, d, j, r, p;
589 var c = plot.plugins.cursor;
590 for (var i=0; i<plot.series.length; i++) {
594 threshold = c.intersectionThreshold;
596 threshold += s.markerRenderer.size/2;
598 for (var j=0; j<s.gridData.length; j++) {
600 // check vertical line
601 if (c.showVerticalLine) {
602 if (Math.abs(x-p[0]) <= threshold) {
604 ret.data.push({seriesIndex: i, pointIndex:j, gridData:p, data:s.data[j]});
613 function moveTooltip(gridpos, plot) {
614 var c = plot.plugins.cursor;
615 var elem = c._tooltipElem;
616 switch (c.tooltipLocation) {
618 var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
619 var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
622 var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
623 var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
626 var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
627 var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
630 var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
631 var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
634 var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
635 var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
638 var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
639 var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
642 var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
643 var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
646 var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
647 var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
650 var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
651 var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
660 function positionTooltip(plot) {
661 // fake a grid for positioning
662 var grid = plot._gridPadding;
663 var c = plot.plugins.cursor;
664 var elem = c._tooltipElem;
665 switch (c.tooltipLocation) {
667 var a = grid.left + c.tooltipOffset;
668 var b = grid.top + c.tooltipOffset;
673 var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
674 var b = grid.top + c.tooltipOffset;
679 var a = grid.right + c.tooltipOffset;
680 var b = grid.top + c.tooltipOffset;
681 elem.css({right:a, top:b});
684 var a = grid.right + c.tooltipOffset;
685 var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
686 elem.css({right:a, top:b});
689 var a = grid.right + c.tooltipOffset;
690 var b = grid.bottom + c.tooltipOffset;
691 elem.css({right:a, bottom:b});
694 var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
695 var b = grid.bottom + c.tooltipOffset;
696 elem.css({left:a, bottom:b});
699 var a = grid.left + c.tooltipOffset;
700 var b = grid.bottom + c.tooltipOffset;
701 elem.css({left:a, bottom:b});
704 var a = grid.left + c.tooltipOffset;
705 var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
706 elem.css({left:a, top:b});
708 default: // same as 'se'
709 var a = grid.right - c.tooltipOffset;
710 var b = grid.bottom + c.tooltipOffset;
711 elem.css({right:a, bottom:b});
717 function handleClick (ev, gridpos, datapos, neighbor, plot) {
719 ev.stopImmediatePropagation();
720 var c = plot.plugins.cursor;
722 c.resetZoom(plot, c);
724 var sel = window.getSelection;
725 if (document.selection && document.selection.empty)
727 document.selection.empty();
729 else if (sel && !sel().isCollapsed) {
735 function handleDblClick (ev, gridpos, datapos, neighbor, plot) {
737 ev.stopImmediatePropagation();
738 var c = plot.plugins.cursor;
739 if (c.dblClickReset) {
740 c.resetZoom(plot, c);
742 var sel = window.getSelection;
743 if (document.selection && document.selection.empty)
745 document.selection.empty();
747 else if (sel && !sel().isCollapsed) {
753 function handleMouseLeave(ev, gridpos, datapos, neighbor, plot) {
754 var c = plot.plugins.cursor;
757 $(ev.target).css('cursor', c.previousCursor);
758 if (c.showTooltip && !(c._zoom.zooming && c.showTooltipOutsideZoom && !c.constrainOutsideZoom)) {
759 c._tooltipElem.empty();
760 c._tooltipElem.hide();
763 c._zoom.gridpos = gridpos;
764 c._zoom.datapos = datapos;
766 if (c.showVerticalLine || c.showHorizontalLine) {
767 var ctx = c.cursorCanvas._ctx;
768 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
771 if (c.showCursorLegend) {
772 var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
773 for (var i=0; i<cells.length; i++) {
774 var idx = $(cells[i]).data('seriesIndex');
775 var series = plot.series[idx];
776 var label = series.label.toString();
777 if (plot.legend.escapeHtml) {
778 $(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
781 $(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
789 function handleMouseEnter(ev, gridpos, datapos, neighbor, plot) {
790 var c = plot.plugins.cursor;
793 c.previousCursor = ev.target.style.cursor;
794 ev.target.style.cursor = c.style;
796 updateTooltip(gridpos, datapos, plot);
798 moveTooltip(gridpos, plot);
801 positionTooltip(plot);
803 c._tooltipElem.show();
805 if (c.showVerticalLine || c.showHorizontalLine) {
806 moveLine(gridpos, plot);
812 function handleMouseMove(ev, gridpos, datapos, neighbor, plot) {
813 var c = plot.plugins.cursor;
816 updateTooltip(gridpos, datapos, plot);
818 moveTooltip(gridpos, plot);
821 if (c.showVerticalLine || c.showHorizontalLine) {
822 moveLine(gridpos, plot);
827 function getEventPosition(ev) {
828 var plot = ev.data.plot;
829 var go = plot.eventCanvas._elem.offset();
830 var gridPos = {x:ev.pageX - go.left, y:ev.pageY - go.top};
832 // TO DO: handle yMidAxis
834 var dataPos = {xaxis:null, yaxis:null, x2axis:null, y2axis:null, y3axis:null, y4axis:null, y5axis:null, y6axis:null, y7axis:null, y8axis:null, y9axis:null, yMidAxis:null};
835 var an = ['xaxis', 'yaxis', 'x2axis', 'y2axis', 'y3axis', 'y4axis', 'y5axis', 'y6axis', 'y7axis', 'y8axis', 'y9axis', 'yMidAxis'];
838 for (n=11; n>0; n--) {
841 dataPos[axis] = ax[axis].series_p2u(gridPos[axis.charAt(0)]);
845 return {offsets:go, gridPos:gridPos, dataPos:dataPos};
848 function handleZoomMove(ev) {
849 var plot = ev.data.plot;
850 var c = plot.plugins.cursor;
851 // don't do anything if not on grid.
852 if (c.show && c.zoom && c._zoom.started && !c.zoomTarget) {
854 var ctx = c.zoomCanvas._ctx;
855 var positions = getEventPosition(ev);
856 var gridpos = positions.gridPos;
857 var datapos = positions.dataPos;
858 c._zoom.gridpos = gridpos;
859 c._zoom.datapos = datapos;
860 c._zoom.zooming = true;
861 var xpos = gridpos.x;
862 var ypos = gridpos.y;
863 var height = ctx.canvas.height;
864 var width = ctx.canvas.width;
865 if (c.showTooltip && !c.onGrid && c.showTooltipOutsideZoom) {
866 updateTooltip(gridpos, datapos, plot);
868 moveTooltip(gridpos, plot);
871 if (c.constrainZoomTo == 'x') {
872 c._zoom.end = [xpos, height];
874 else if (c.constrainZoomTo == 'y') {
875 c._zoom.end = [width, ypos];
878 c._zoom.end = [xpos, ypos];
880 var sel = window.getSelection;
881 if (document.selection && document.selection.empty)
883 document.selection.empty();
885 else if (sel && !sel().isCollapsed) {
893 function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
894 var c = plot.plugins.cursor;
895 if(plot.plugins.mobile){
896 $(document).one('vmouseup.jqplot_cursor', {plot:plot}, handleMouseUp);
898 $(document).one('mouseup.jqplot_cursor', {plot:plot}, handleMouseUp);
900 var axes = plot.axes;
901 if (document.onselectstart != undefined) {
902 c._oldHandlers.onselectstart = document.onselectstart;
903 document.onselectstart = function () { return false; };
905 if (document.ondrag != undefined) {
906 c._oldHandlers.ondrag = document.ondrag;
907 document.ondrag = function () { return false; };
909 if (document.onmousedown != undefined) {
910 c._oldHandlers.onmousedown = document.onmousedown;
911 document.onmousedown = function () { return false; };
915 var ctx = c.zoomCanvas._ctx;
916 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
919 if (c.constrainZoomTo == 'x') {
920 c._zoom.start = [gridpos.x, 0];
922 else if (c.constrainZoomTo == 'y') {
923 c._zoom.start = [0, gridpos.y];
926 c._zoom.start = [gridpos.x, gridpos.y];
928 c._zoom.started = true;
929 for (var ax in datapos) {
930 // get zoom starting position.
931 c._zoom.axes.start[ax] = datapos[ax];
933 if(plot.plugins.mobile){
934 $(document).bind('vmousemove.jqplotCursor', {plot:plot}, handleZoomMove);
936 $(document).bind('mousemove.jqplotCursor', {plot:plot}, handleZoomMove);
942 function handleMouseUp(ev) {
943 var plot = ev.data.plot;
944 var c = plot.plugins.cursor;
945 if (c.zoom && c._zoom.zooming && !c.zoomTarget) {
946 var xpos = c._zoom.gridpos.x;
947 var ypos = c._zoom.gridpos.y;
948 var datapos = c._zoom.datapos;
949 var height = c.zoomCanvas._ctx.canvas.height;
950 var width = c.zoomCanvas._ctx.canvas.width;
951 var axes = plot.axes;
953 if (c.constrainOutsideZoom && !c.onGrid) {
954 if (xpos < 0) { xpos = 0; }
955 else if (xpos > width) { xpos = width; }
956 if (ypos < 0) { ypos = 0; }
957 else if (ypos > height) { ypos = height; }
959 for (var axis in datapos) {
961 if (axis.charAt(0) == 'x') {
962 datapos[axis] = axes[axis].series_p2u(xpos);
965 datapos[axis] = axes[axis].series_p2u(ypos);
971 if (c.constrainZoomTo == 'x') {
974 else if (c.constrainZoomTo == 'y') {
977 c._zoom.end = [xpos, ypos];
978 c._zoom.gridpos = {x:xpos, y:ypos};
980 c.doZoom(c._zoom.gridpos, datapos, plot, c);
982 c._zoom.started = false;
983 c._zoom.zooming = false;
985 $(document).unbind('mousemove.jqplotCursor', handleZoomMove);
987 if (document.onselectstart != undefined && c._oldHandlers.onselectstart != null){
988 document.onselectstart = c._oldHandlers.onselectstart;
989 c._oldHandlers.onselectstart = null;
991 if (document.ondrag != undefined && c._oldHandlers.ondrag != null){
992 document.ondrag = c._oldHandlers.ondrag;
993 c._oldHandlers.ondrag = null;
995 if (document.onmousedown != undefined && c._oldHandlers.onmousedown != null){
996 document.onmousedown = c._oldHandlers.onmousedown;
997 c._oldHandlers.onmousedown = null;
1002 function drawZoomBox() {
1003 var start = this._zoom.start;
1004 var end = this._zoom.end;
1005 var ctx = this.zoomCanvas._ctx;
1007 if (end[0] > start[0]) {
1009 w = end[0] - start[0];
1013 w = start[0] - end[0];
1015 if (end[1] > start[1]) {
1017 h = end[1] - start[1];
1021 h = start[1] - end[1];
1023 ctx.fillStyle = 'rgba(0,0,0,0.2)';
1024 ctx.strokeStyle = '#999999';
1025 ctx.lineWidth = 1.0;
1026 ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
1027 ctx.fillRect(0,0,ctx.canvas.width, ctx.canvas.height);
1028 ctx.clearRect(l, t, w, h);
1029 // IE won't show transparent fill rect, so stroke a rect also.
1030 ctx.strokeRect(l,t,w,h);
1034 $.jqplot.CursorLegendRenderer = function(options) {
1035 $.jqplot.TableLegendRenderer.call(this, options);
1036 this.formatString = '%s';
1039 $.jqplot.CursorLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
1040 $.jqplot.CursorLegendRenderer.prototype.constructor = $.jqplot.CursorLegendRenderer;
1042 // called in context of a Legend
1043 $.jqplot.CursorLegendRenderer.prototype.draw = function() {
1045 this._elem.emptyForce();
1049 var series = this._series, s;
1050 // make a table. one line label per row.
1051 var elem = document.createElement('div');
1052 this._elem = $(elem);
1054 this._elem.addClass('jqplot-legend jqplot-cursor-legend');
1055 this._elem.css('position', 'absolute');
1058 for (var i = 0; i< series.length; i++) {
1060 if (s.show && s.showLabel) {
1061 var lt = $.jqplot.sprintf(this.formatString, s.label.toString());
1063 var color = s.color;
1064 if (s._stack && !s.fill) {
1067 addrow.call(this, lt, color, pad, i);
1070 // let plugins add more rows to legend. Used by trend line plugin.
1071 for (var j=0; j<$.jqplot.addLegendRowHooks.length; j++) {
1072 var item = $.jqplot.addLegendRowHooks[j].call(this, s);
1074 addrow.call(this, item.label, item.color, pad);
1085 function addrow(label, color, pad, idx) {
1086 var rs = (pad) ? this.rowSpacing : '0';
1087 var tr = $('<tr class="jqplot-legend jqplot-cursor-legend"></tr>').appendTo(this._elem);
1088 tr.data('seriesIndex', idx);
1089 $('<td class="jqplot-legend jqplot-cursor-legend-swatch" style="padding-top:'+rs+';">'+
1090 '<div style="border:1px solid #cccccc;padding:0.2em;">'+
1091 '<div class="jqplot-cursor-legend-swatch" style="background-color:'+color+';"></div>'+
1092 '</div></td>').appendTo(tr);
1093 var td = $('<td class="jqplot-legend jqplot-cursor-legend-label" style="vertical-align:middle;padding-top:'+rs+';"></td>');
1095 td.data('seriesIndex', idx);
1096 if (this.escapeHtml) {