MediaWiki:Gadget-jquery.jqplot.cursor.js
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/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: 1.0.4
* Revision: 1121
*
* Copyright (c) 2009-2012 Chris Leonello
* jqPlot is currently available for use in all personal or commercial projects
* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
* choose the license that best suits your project and use it accordingly.
*
* Although not required, the author would appreciate an email letting him
* know of any substantial use of jqPlot. You can reach the author at:
* chris at jqplot dot com or see http://www.jqplot.com/info.php .
*
* If you are feeling kind and generous, consider supporting the project by
* making a donation at: http://www.jqplot.com/donate.php .
*
* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
*
* version 2007.04.27
* author Ash Searle
* http://hexmen.com/blog/2007/03/printf-sprintf/
* http://hexmen.com/js/sprintf.js
* The author (Ash Searle) has placed this code in the public domain:
* "This code is unrestricted: you are free to use it however you like."
*
*/
(function($) {
/**
* Class: $.jqplot.Cursor
* Plugin class representing the cursor as displayed on the plot.
*/
$.jqplot.Cursor = function(options) {
// Group: Properties
//
// prop: style
// CSS spec for cursor style
this.style = 'crosshair';
this.previousCursor = 'auto';
// prop: show
// wether to show the cursor or not.
this.show = $.jqplot.config.enablePlugins;
// prop: showTooltip
// show a cursor position tooltip. Location of the tooltip
// will be controlled by followMouse and tooltipLocation.
this.showTooltip = true;
// prop: followMouse
// Tooltip follows the mouse, it is not at a fixed location.
// Tooltip will show on the grid at the location given by
// tooltipLocation, offset from the grid edge by tooltipOffset.
this.followMouse = false;
// prop: tooltipLocation
// Where to position tooltip. If followMouse is true, this is
// relative to the cursor, otherwise, it is relative to the grid.
// One of 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
this.tooltipLocation = 'se';
// prop: tooltipOffset
// Pixel offset of tooltip from the grid boudaries or cursor center.
this.tooltipOffset = 6;
// prop: showTooltipGridPosition
// show the grid pixel coordinates of the mouse.
this.showTooltipGridPosition = false;
// prop: showTooltipUnitPosition
// show the unit (data) coordinates of the mouse.
this.showTooltipUnitPosition = true;
// prop: showTooltipDataPosition
// Used with showVerticalLine to show intersecting data points in the tooltip.
this.showTooltipDataPosition = false;
// prop: tooltipFormatString
// sprintf format string for the tooltip.
// Uses Ash Searle's javascript sprintf implementation
// found here: http://hexmen.com/blog/2007/03/printf-sprintf/
// See http://perldoc.perl.org/functions/sprintf.html for reference
// Note, if showTooltipDataPosition is true, the default tooltipFormatString
// will be set to the cursorLegendFormatString, not the default given here.
this.tooltipFormatString = '%.4P, %.4P';
// prop: useAxesFormatters
// Use the x and y axes formatters to format the text in the tooltip.
this.useAxesFormatters = true;
// prop: tooltipAxisGroups
// Show position for the specified axes.
// This is an array like [['xaxis', 'yaxis'], ['xaxis', 'y2axis']]
// Default is to compute automatically for all visible axes.
this.tooltipAxisGroups = [];
// prop: zoom
// Enable plot zooming.
this.zoom = false;
// zoomProxy and zoomTarget properties are not directly set by user.
// They Will be set through call to zoomProxy method.
this.zoomProxy = false;
this.zoomTarget = false;
// prop: looseZoom
// Will expand zoom range to provide more rounded tick values.
// Works only with linear, log and date axes.
this.looseZoom = true;
// prop: clickReset
// Will reset plot zoom if single click on plot without drag.
this.clickReset = false;
// prop: dblClickReset
// Will reset plot zoom if double click on plot without drag.
this.dblClickReset = true;
// prop: showVerticalLine
// draw a vertical line across the plot which follows the cursor.
// When the line is near a data point, a special legend and/or tooltip can
// be updated with the data values.
this.showVerticalLine = false;
// prop: showHorizontalLine
// draw a horizontal line across the plot which follows the cursor.
this.showHorizontalLine = false;
// prop: constrainZoomTo
// 'none', 'x' or 'y'
this.constrainZoomTo = 'none';
// // prop: autoscaleConstraint
// // when a constrained axis is specified, true will
// // auatoscale the adjacent axis.
// this.autoscaleConstraint = true;
this.shapeRenderer = new $.jqplot.ShapeRenderer();
this._zoom = {start:[], end:[], started: false, zooming:false, isZoomed:false, axes:{start:{}, end:{}}, gridpos:{}, datapos:{}};
this._tooltipElem;
this.zoomCanvas;
this.cursorCanvas;
// prop: intersectionThreshold
// pixel distance from data point or marker to consider cursor lines intersecting with point.
// If data point markers are not shown, this should be >= 1 or will often miss point intersections.
this.intersectionThreshold = 2;
// prop: showCursorLegend
// Replace the plot legend with an enhanced legend displaying intersection information.
this.showCursorLegend = false;
// prop: cursorLegendFormatString
// Format string used in the cursor legend. If showTooltipDataPosition is true,
// this will also be the default format string used by tooltipFormatString.
this.cursorLegendFormatString = $.jqplot.Cursor.cursorLegendFormatString;
// whether the cursor is over the grid or not.
this._oldHandlers = {onselectstart: null, ondrag: null, onmousedown: null};
// prop: constrainOutsideZoom
// True to limit actual zoom area to edges of grid, even when zooming
// outside of plot area. That is, can't zoom out by mousing outside plot.
this.constrainOutsideZoom = true;
// prop: showTooltipOutsideZoom
// True will keep updating the tooltip when zooming of the grid.
this.showTooltipOutsideZoom = false;
// true if mouse is over grid, false if not.
this.onGrid = false;
$.extend(true, this, options);
};
$.jqplot.Cursor.cursorLegendFormatString = '%s x:%s, y:%s';
// called with scope of plot
$.jqplot.Cursor.init = function (target, data, opts){
// add a cursor attribute to the plot
var options = opts || {};
this.plugins.cursor = new $.jqplot.Cursor(options.cursor);
var c = this.plugins.cursor;
if (c.show) {
$.jqplot.eventListenerHooks.push(['jqplotMouseEnter', handleMouseEnter]);
$.jqplot.eventListenerHooks.push(['jqplotMouseLeave', handleMouseLeave]);
$.jqplot.eventListenerHooks.push(['jqplotMouseMove', handleMouseMove]);
if (c.showCursorLegend) {
opts.legend = opts.legend || {};
opts.legend.renderer = $.jqplot.CursorLegendRenderer;
opts.legend.formatString = this.plugins.cursor.cursorLegendFormatString;
opts.legend.show = true;
}
if (c.zoom) {
$.jqplot.eventListenerHooks.push(['jqplotMouseDown', handleMouseDown]);
if (c.clickReset) {
$.jqplot.eventListenerHooks.push(['jqplotClick', handleClick]);
}
if (c.dblClickReset) {
$.jqplot.eventListenerHooks.push(['jqplotDblClick', handleDblClick]);
}
}
this.resetZoom = function() {
var axes = this.axes;
if (!c.zoomProxy) {
for (var ax in axes) {
axes[ax].reset();
axes[ax]._ticks = [];
// fake out tick creation algorithm to make sure original auto
// computed format string is used if _overrideFormatString is true
if (c._zoom.axes[ax] !== undefined) {
axes[ax]._autoFormatString = c._zoom.axes[ax].tickFormatString;
}
}
this.redraw();
}
else {
var ctx = this.plugins.cursor.zoomCanvas._ctx;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx = null;
}
this.plugins.cursor._zoom.isZoomed = false;
this.target.trigger('jqplotResetZoom', [this, this.plugins.cursor]);
};
if (c.showTooltipDataPosition) {
c.showTooltipUnitPosition = false;
c.showTooltipGridPosition = false;
if (options.cursor.tooltipFormatString == undefined) {
c.tooltipFormatString = $.jqplot.Cursor.cursorLegendFormatString;
}
}
}
};
// called with context of plot
$.jqplot.Cursor.postDraw = function() {
var c = this.plugins.cursor;
// Memory Leaks patch
if (c.zoomCanvas) {
c.zoomCanvas.resetCanvas();
c.zoomCanvas = null;
}
if (c.cursorCanvas) {
c.cursorCanvas.resetCanvas();
c.cursorCanvas = null;
}
if (c._tooltipElem) {
c._tooltipElem.emptyForce();
c._tooltipElem = null;
}
if (c.zoom) {
c.zoomCanvas = new $.jqplot.GenericCanvas();
this.eventCanvas._elem.before(c.zoomCanvas.createElement(this._gridPadding, 'jqplot-zoom-canvas', this._plotDimensions, this));
c.zoomCanvas.setContext();
}
var elem = document.createElement('div');
c._tooltipElem = $(elem);
elem = null;
c._tooltipElem.addClass('jqplot-cursor-tooltip');
c._tooltipElem.css({position:'absolute', display:'none'});
if (c.zoomCanvas) {
c.zoomCanvas._elem.before(c._tooltipElem);
}
else {
this.eventCanvas._elem.before(c._tooltipElem);
}
if (c.showVerticalLine || c.showHorizontalLine) {
c.cursorCanvas = new $.jqplot.GenericCanvas();
this.eventCanvas._elem.before(c.cursorCanvas.createElement(this._gridPadding, 'jqplot-cursor-canvas', this._plotDimensions, this));
c.cursorCanvas.setContext();
}
// if we are showing the positions in unit coordinates, and no axes groups
// were specified, create a default set.
if (c.showTooltipUnitPosition){
if (c.tooltipAxisGroups.length === 0) {
var series = this.series;
var s;
var temp = [];
for (var i=0; i<series.length; i++) {
s = series[i];
var ax = s.xaxis+','+s.yaxis;
if ($.inArray(ax, temp) == -1) {
temp.push(ax);
}
}
for (var i=0; i<temp.length; i++) {
c.tooltipAxisGroups.push(temp[i].split(','));
}
}
}
};
// Group: methods
//
// method: $.jqplot.Cursor.zoomProxy
// links targetPlot to controllerPlot so that plot zooming of
// targetPlot will be controlled by zooming on the controllerPlot.
// controllerPlot will not actually zoom, but acts as an
// overview plot. Note, the zoom options must be set to true for
// zoomProxy to work.
$.jqplot.Cursor.zoomProxy = function(targetPlot, controllerPlot) {
var tc = targetPlot.plugins.cursor;
var cc = controllerPlot.plugins.cursor;
tc.zoomTarget = true;
tc.zoom = true;
tc.style = 'auto';
tc.dblClickReset = false;
cc.zoom = true;
cc.zoomProxy = true;
controllerPlot.target.on('jqplotZoom', plotZoom);
controllerPlot.target.on('jqplotResetZoom', plotReset);
function plotZoom(ev, gridpos, datapos, plot, cursor) {
tc.doZoom(gridpos, datapos, targetPlot, cursor);
}
function plotReset(ev, plot, cursor) {
targetPlot.resetZoom();
}
};
$.jqplot.Cursor.prototype.resetZoom = function(plot, cursor) {
var axes = plot.axes;
var cax = cursor._zoom.axes;
if (!plot.plugins.cursor.zoomProxy && cursor._zoom.isZoomed) {
for (var ax in axes) {
// axes[ax]._ticks = [];
// axes[ax].min = cax[ax].min;
// axes[ax].max = cax[ax].max;
// axes[ax].numberTicks = cax[ax].numberTicks;
// axes[ax].tickInterval = cax[ax].tickInterval;
// // for date axes
// axes[ax].daTickInterval = cax[ax].daTickInterval;
axes[ax].reset();
axes[ax]._ticks = [];
// fake out tick creation algorithm to make sure original auto
// computed format string is used if _overrideFormatString is true
axes[ax]._autoFormatString = cax[ax].tickFormatString;
}
plot.redraw();
cursor._zoom.isZoomed = false;
}
else {
var ctx = cursor.zoomCanvas._ctx;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx = null;
}
plot.target.trigger('jqplotResetZoom', [plot, cursor]);
};
$.jqplot.Cursor.resetZoom = function(plot) {
plot.resetZoom();
};
$.jqplot.Cursor.prototype.doZoom = function (gridpos, datapos, plot, cursor) {
var c = cursor;
var axes = plot.axes;
var zaxes = c._zoom.axes;
var start = zaxes.start;
var end = zaxes.end;
var min, max, dp, span,
newmin, newmax, curax, _numberTicks, ret;
var ctx = plot.plugins.cursor.zoomCanvas._ctx;
// don't zoom if zoom area is too small (in pixels)
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)) {
if (!plot.plugins.cursor.zoomProxy) {
for (var ax in datapos) {
// make a copy of the original axes to revert back.
if (c._zoom.axes[ax] == undefined) {
c._zoom.axes[ax] = {};
c._zoom.axes[ax].numberTicks = axes[ax].numberTicks;
c._zoom.axes[ax].tickInterval = axes[ax].tickInterval;
// for date axes...
c._zoom.axes[ax].daTickInterval = axes[ax].daTickInterval;
c._zoom.axes[ax].min = axes[ax].min;
c._zoom.axes[ax].max = axes[ax].max;
c._zoom.axes[ax].tickFormatString = (axes[ax].tickOptions != null) ? axes[ax].tickOptions.formatString : '';
}
if ((c.constrainZoomTo == 'none') || (c.constrainZoomTo == 'x' && ax[0] == 'x') || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'y')) {
dp = datapos[ax];
if (dp != null) {
if (dp > start[ax]) {
newmin = start[ax];
newmax = dp;
}
else {
span = start[ax] - dp;
newmin = dp;
newmax = start[ax];
}
curax = axes[ax];
_numberTicks = null;
// if aligning this axis, use number of ticks from previous axis.
// Do I need to reset somehow if alignTicks is changed and then graph is replotted??
if (curax.alignTicks) {
if (curax.name === 'x2axis' && plot.axes.xaxis.show) {
_numberTicks = plot.axes.xaxis.numberTicks;
}
else if (curax.name[0] === 'y' && curax.name !== 'yaxis' && curax.name !== 'yMidAxis' && plot.axes.yaxis.show) {
_numberTicks = plot.axes.yaxis.numberTicks;
}
}
if (this.looseZoom && (axes[ax].renderer.constructor === $.jqplot.LinearAxisRenderer || axes[ax].renderer.constructor === $.jqplot.LogAxisRenderer )) { //} || axes[ax].renderer.constructor === $.jqplot.DateAxisRenderer)) {
ret = $.jqplot.LinearTickGenerator(newmin, newmax, curax._scalefact, _numberTicks);
// if new minimum is less than "true" minimum of axis display, adjust it
if (axes[ax].tickInset && ret[0] < axes[ax].min + axes[ax].tickInset * axes[ax].tickInterval) {
ret[0] += ret[4];
ret[2] -= 1;
}
// if new maximum is greater than "true" max of axis display, adjust it
if (axes[ax].tickInset && ret[1] > axes[ax].max - axes[ax].tickInset * axes[ax].tickInterval) {
ret[1] -= ret[4];
ret[2] -= 1;
}
// for log axes, don't fall below current minimum, this will look bad and can't have 0 in range anyway.
if (axes[ax].renderer.constructor === $.jqplot.LogAxisRenderer && ret[0] < axes[ax].min) {
// remove a tick and shift min up
ret[0] += ret[4];
ret[2] -= 1;
}
axes[ax].min = ret[0];
axes[ax].max = ret[1];
axes[ax]._autoFormatString = ret[3];
axes[ax].numberTicks = ret[2];
axes[ax].tickInterval = ret[4];
// for date axes...
axes[ax].daTickInterval = [ret[4]/1000, 'seconds'];
}
else {
axes[ax].min = newmin;
axes[ax].max = newmax;
axes[ax].tickInterval = null;
axes[ax].numberTicks = null;
// for date axes...
axes[ax].daTickInterval = null;
}
axes[ax]._ticks = [];
}
}
// if ((c.constrainZoomTo == 'x' && ax[0] == 'y' && c.autoscaleConstraint) || (c.constrainZoomTo == 'y' && ax.charAt(0) == 'x' && c.autoscaleConstraint)) {
// dp = datapos[ax];
// if (dp != null) {
// axes[ax].max == null;
// axes[ax].min = null;
// }
// }
}
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
plot.redraw();
c._zoom.isZoomed = true;
ctx = null;
}
plot.target.trigger('jqplotZoom', [gridpos, datapos, plot, cursor]);
}
};
$.jqplot.preInitHooks.push($.jqplot.Cursor.init);
$.jqplot.postDrawHooks.push($.jqplot.Cursor.postDraw);
function updateTooltip(gridpos, datapos, plot) {
var c = plot.plugins.cursor;
var s = '';
var addbr = false;
if (c.showTooltipGridPosition) {
s = gridpos.x+', '+gridpos.y;
addbr = true;
}
if (c.showTooltipUnitPosition) {
var g;
for (var i=0; i<c.tooltipAxisGroups.length; i++) {
g = c.tooltipAxisGroups[i];
if (addbr) {
s += '<br />';
}
if (c.useAxesFormatters) {
for (var j=0; j<g.length; j++) {
if (j) {
s += ', ';
}
var af = plot.axes[g[j]]._ticks[0].formatter;
var afstr = plot.axes[g[j]]._ticks[0].formatString;
s += af(afstr, datapos[g[j]]);
}
}
else {
s += $.jqplot.sprintf(c.tooltipFormatString, datapos[g[0]], datapos[g[1]]);
}
addbr = true;
}
}
if (c.showTooltipDataPosition) {
var series = plot.series;
var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
var addbr = false;
for (var i = 0; i< series.length; i++) {
if (series[i].show) {
var idx = series[i].index;
var label = series[i].label.toString();
var cellid = $.inArray(idx, ret.indices);
var sx = undefined;
var sy = undefined;
if (cellid != -1) {
var data = ret.data[cellid].data;
if (c.useAxesFormatters) {
var xf = series[i]._xaxis._ticks[0].formatter;
var yf = series[i]._yaxis._ticks[0].formatter;
var xfstr = series[i]._xaxis._ticks[0].formatString;
var yfstr = series[i]._yaxis._ticks[0].formatString;
sx = xf(xfstr, data[0]);
sy = yf(yfstr, data[1]);
}
else {
sx = data[0];
sy = data[1];
}
if (addbr) {
s += '<br />';
}
s += $.jqplot.sprintf(c.tooltipFormatString, label, sx, sy);
addbr = true;
}
}
}
}
c._tooltipElem.html(s);
}
function moveLine(gridpos, plot) {
var c = plot.plugins.cursor;
var ctx = c.cursorCanvas._ctx;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
if (c.showVerticalLine) {
c.shapeRenderer.draw(ctx, [[gridpos.x, 0], [gridpos.x, ctx.canvas.height]]);
}
if (c.showHorizontalLine) {
c.shapeRenderer.draw(ctx, [[0, gridpos.y], [ctx.canvas.width, gridpos.y]]);
}
var ret = getIntersectingPoints(plot, gridpos.x, gridpos.y);
if (c.showCursorLegend) {
var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
for (var i=0; i<cells.length; i++) {
var idx = $(cells[i]).data('seriesIndex');
var series = plot.series[idx];
var label = series.label.toString();
var cellid = $.inArray(idx, ret.indices);
var sx = undefined;
var sy = undefined;
if (cellid != -1) {
var data = ret.data[cellid].data;
if (c.useAxesFormatters) {
var xf = series._xaxis._ticks[0].formatter;
var yf = series._yaxis._ticks[0].formatter;
var xfstr = series._xaxis._ticks[0].formatString;
var yfstr = series._yaxis._ticks[0].formatString;
sx = xf(xfstr, data[0]);
sy = yf(yfstr, data[1]);
}
else {
sx = data[0];
sy = data[1];
}
}
if (plot.legend.escapeHtml) {
$(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
}
else {
$(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, sx, sy));
}
}
}
ctx = null;
}
function getIntersectingPoints(plot, x, y) {
var ret = {indices:[], data:[]};
var s, i, d0, d, j, r, p;
var threshold;
var c = plot.plugins.cursor;
for (var i=0; i<plot.series.length; i++) {
s = plot.series[i];
r = s.renderer;
if (s.show) {
threshold = c.intersectionThreshold;
if (s.showMarker) {
threshold += s.markerRenderer.size/2;
}
for (var j=0; j<s.gridData.length; j++) {
p = s.gridData[j];
// check vertical line
if (c.showVerticalLine) {
if (Math.abs(x-p[0]) <= threshold) {
ret.indices.push(i);
ret.data.push({seriesIndex: i, pointIndex:j, gridData:p, data:s.data[j]});
}
}
}
}
}
return ret;
}
function moveTooltip(gridpos, plot) {
var c = plot.plugins.cursor;
var elem = c._tooltipElem;
switch (c.tooltipLocation) {
case 'nw':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
break;
case 'n':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
break;
case 'ne':
var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top - c.tooltipOffset - elem.outerHeight(true);
break;
case 'e':
var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
break;
case 'se':
var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
break;
case 's':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
break;
case 'sw':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
break;
case 'w':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
break;
default:
var x = gridpos.x + plot._gridPadding.left + c.tooltipOffset;
var y = gridpos.y + plot._gridPadding.top + c.tooltipOffset;
break;
}
elem.css('left', x);
elem.css('top', y);
elem = null;
}
function positionTooltip(plot) {
// fake a grid for positioning
var grid = plot._gridPadding;
var c = plot.plugins.cursor;
var elem = c._tooltipElem;
switch (c.tooltipLocation) {
case 'nw':
var a = grid.left + c.tooltipOffset;
var b = grid.top + c.tooltipOffset;
elem.css('left', a);
elem.css('top', b);
break;
case 'n':
var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
var b = grid.top + c.tooltipOffset;
elem.css('left', a);
elem.css('top', b);
break;
case 'ne':
var a = grid.right + c.tooltipOffset;
var b = grid.top + c.tooltipOffset;
elem.css({right:a, top:b});
break;
case 'e':
var a = grid.right + c.tooltipOffset;
var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
elem.css({right:a, top:b});
break;
case 'se':
var a = grid.right + c.tooltipOffset;
var b = grid.bottom + c.tooltipOffset;
elem.css({right:a, bottom:b});
break;
case 's':
var a = (grid.left + (plot._plotDimensions.width - grid.right))/2 - elem.outerWidth(true)/2;
var b = grid.bottom + c.tooltipOffset;
elem.css({left:a, bottom:b});
break;
case 'sw':
var a = grid.left + c.tooltipOffset;
var b = grid.bottom + c.tooltipOffset;
elem.css({left:a, bottom:b});
break;
case 'w':
var a = grid.left + c.tooltipOffset;
var b = (grid.top + (plot._plotDimensions.height - grid.bottom))/2 - elem.outerHeight(true)/2;
elem.css({left:a, top:b});
break;
default: // same as 'se'
var a = grid.right - c.tooltipOffset;
var b = grid.bottom + c.tooltipOffset;
elem.css({right:a, bottom:b});
break;
}
elem = null;
}
function handleClick (ev, gridpos, datapos, neighbor, plot) {
ev.preventDefault();
ev.stopImmediatePropagation();
var c = plot.plugins.cursor;
if (c.clickReset) {
c.resetZoom(plot, c);
}
var sel = window.getSelection;
if (document.selection && document.selection.empty)
{
document.selection.empty();
}
else if (sel && !sel().isCollapsed) {
sel().collapse();
}
return false;
}
function handleDblClick (ev, gridpos, datapos, neighbor, plot) {
ev.preventDefault();
ev.stopImmediatePropagation();
var c = plot.plugins.cursor;
if (c.dblClickReset) {
c.resetZoom(plot, c);
}
var sel = window.getSelection;
if (document.selection && document.selection.empty)
{
document.selection.empty();
}
else if (sel && !sel().isCollapsed) {
sel().collapse();
}
return false;
}
function handleMouseLeave(ev, gridpos, datapos, neighbor, plot) {
var c = plot.plugins.cursor;
c.onGrid = false;
if (c.show) {
$(ev.target).css('cursor', c.previousCursor);
if (c.showTooltip && !(c._zoom.zooming && c.showTooltipOutsideZoom && !c.constrainOutsideZoom)) {
c._tooltipElem.empty();
c._tooltipElem.hide();
}
if (c.zoom) {
c._zoom.gridpos = gridpos;
c._zoom.datapos = datapos;
}
if (c.showVerticalLine || c.showHorizontalLine) {
var ctx = c.cursorCanvas._ctx;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx = null;
}
if (c.showCursorLegend) {
var cells = $(plot.targetId + ' td.jqplot-cursor-legend-label');
for (var i=0; i<cells.length; i++) {
var idx = $(cells[i]).data('seriesIndex');
var series = plot.series[idx];
var label = series.label.toString();
if (plot.legend.escapeHtml) {
$(cells[i]).text($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
}
else {
$(cells[i]).html($.jqplot.sprintf(c.cursorLegendFormatString, label, undefined, undefined));
}
}
}
}
}
function handleMouseEnter(ev, gridpos, datapos, neighbor, plot) {
var c = plot.plugins.cursor;
c.onGrid = true;
if (c.show) {
c.previousCursor = ev.target.style.cursor;
ev.target.style.cursor = c.style;
if (c.showTooltip) {
updateTooltip(gridpos, datapos, plot);
if (c.followMouse) {
moveTooltip(gridpos, plot);
}
else {
positionTooltip(plot);
}
c._tooltipElem.show();
}
if (c.showVerticalLine || c.showHorizontalLine) {
moveLine(gridpos, plot);
}
}
}
function handleMouseMove(ev, gridpos, datapos, neighbor, plot) {
var c = plot.plugins.cursor;
if (c.show) {
if (c.showTooltip) {
updateTooltip(gridpos, datapos, plot);
if (c.followMouse) {
moveTooltip(gridpos, plot);
}
}
if (c.showVerticalLine || c.showHorizontalLine) {
moveLine(gridpos, plot);
}
}
}
function getEventPosition(ev) {
var plot = ev.data.plot;
var go = plot.eventCanvas._elem.offset();
var gridPos = {x:ev.pageX - go.left, y:ev.pageY - go.top};
//////
// TO DO: handle yMidAxis
//////
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};
var an = ['xaxis', 'yaxis', 'x2axis', 'y2axis', 'y3axis', 'y4axis', 'y5axis', 'y6axis', 'y7axis', 'y8axis', 'y9axis', 'yMidAxis'];
var ax = plot.axes;
var n, axis;
for (n=11; n>0; n--) {
axis = an[n-1];
if (ax[axis].show) {
dataPos[axis] = ax[axis].series_p2u(gridPos[axis[0]]);
}
}
return {offsets:go, gridPos:gridPos, dataPos:dataPos};
}
function handleZoomMove(ev) {
var plot = ev.data.plot;
var c = plot.plugins.cursor;
// don't do anything if not on grid.
if (c.show && c.zoom && c._zoom.started && !c.zoomTarget) {
ev.preventDefault();
var ctx = c.zoomCanvas._ctx;
var positions = getEventPosition(ev);
var gridpos = positions.gridPos;
var datapos = positions.dataPos;
c._zoom.gridpos = gridpos;
c._zoom.datapos = datapos;
c._zoom.zooming = true;
var xpos = gridpos.x;
var ypos = gridpos.y;
var height = ctx.canvas.height;
var width = ctx.canvas.width;
if (c.showTooltip && !c.onGrid && c.showTooltipOutsideZoom) {
updateTooltip(gridpos, datapos, plot);
if (c.followMouse) {
moveTooltip(gridpos, plot);
}
}
if (c.constrainZoomTo == 'x') {
c._zoom.end = [xpos, height];
}
else if (c.constrainZoomTo == 'y') {
c._zoom.end = [width, ypos];
}
else {
c._zoom.end = [xpos, ypos];
}
var sel = window.getSelection;
if (document.selection && document.selection.empty)
{
document.selection.empty();
}
else if (sel && !sel().isCollapsed) {
sel().collapse();
}
drawZoomBox.call(c);
ctx = null;
}
}
function handleMouseDown(ev, gridpos, datapos, neighbor, plot) {
var c = plot.plugins.cursor;
if(plot.plugins.mobile){
$(document).one('vmouseup.jqplot_cursor', {plot:plot}, handleMouseUp);
} else {
$(document).one('mouseup.jqplot_cursor', {plot:plot}, handleMouseUp);
}
var axes = plot.axes;
if (document.onselectstart != undefined) {
c._oldHandlers.onselectstart = document.onselectstart;
document.onselectstart = function () { return false; };
}
if (document.ondrag != undefined) {
c._oldHandlers.ondrag = document.ondrag;
document.ondrag = function () { return false; };
}
if (document.onmousedown != undefined) {
c._oldHandlers.onmousedown = document.onmousedown;
document.onmousedown = function () { return false; };
}
if (c.zoom) {
if (!c.zoomProxy) {
var ctx = c.zoomCanvas._ctx;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx = null;
}
if (c.constrainZoomTo == 'x') {
c._zoom.start = [gridpos.x, 0];
}
else if (c.constrainZoomTo == 'y') {
c._zoom.start = [0, gridpos.y];
}
else {
c._zoom.start = [gridpos.x, gridpos.y];
}
c._zoom.started = true;
for (var ax in datapos) {
// get zoom starting position.
c._zoom.axes.start[ax] = datapos[ax];
}
if(plot.plugins.mobile){
$(document).on('vmousemove.jqplotCursor', {plot:plot}, handleZoomMove);
} else {
$(document).on('mousemove.jqplotCursor', {plot:plot}, handleZoomMove);
}
}
}
function handleMouseUp(ev) {
var plot = ev.data.plot;
var c = plot.plugins.cursor;
if (c.zoom && c._zoom.zooming && !c.zoomTarget) {
var xpos = c._zoom.gridpos.x;
var ypos = c._zoom.gridpos.y;
var datapos = c._zoom.datapos;
var height = c.zoomCanvas._ctx.canvas.height;
var width = c.zoomCanvas._ctx.canvas.width;
var axes = plot.axes;
if (c.constrainOutsideZoom && !c.onGrid) {
if (xpos < 0) { xpos = 0; }
else if (xpos > width) { xpos = width; }
if (ypos < 0) { ypos = 0; }
else if (ypos > height) { ypos = height; }
for (var axis in datapos) {
if (datapos[axis]) {
if (axis[0] == 'x') {
datapos[axis] = axes[axis].series_p2u(xpos);
}
else {
datapos[axis] = axes[axis].series_p2u(ypos);
}
}
}
}
if (c.constrainZoomTo == 'x') {
ypos = height;
}
else if (c.constrainZoomTo == 'y') {
xpos = width;
}
c._zoom.end = [xpos, ypos];
c._zoom.gridpos = {x:xpos, y:ypos};
c.doZoom(c._zoom.gridpos, datapos, plot, c);
}
c._zoom.started = false;
c._zoom.zooming = false;
$(document).off('mousemove.jqplotCursor', handleZoomMove);
if (document.onselectstart != undefined && c._oldHandlers.onselectstart != null){
document.onselectstart = c._oldHandlers.onselectstart;
c._oldHandlers.onselectstart = null;
}
if (document.ondrag != undefined && c._oldHandlers.ondrag != null){
document.ondrag = c._oldHandlers.ondrag;
c._oldHandlers.ondrag = null;
}
if (document.onmousedown != undefined && c._oldHandlers.onmousedown != null){
document.onmousedown = c._oldHandlers.onmousedown;
c._oldHandlers.onmousedown = null;
}
}
function drawZoomBox() {
var start = this._zoom.start;
var end = this._zoom.end;
var ctx = this.zoomCanvas._ctx;
var l, t, h, w;
if (end[0] > start[0]) {
l = start[0];
w = end[0] - start[0];
}
else {
l = end[0];
w = start[0] - end[0];
}
if (end[1] > start[1]) {
t = start[1];
h = end[1] - start[1];
}
else {
t = end[1];
h = start[1] - end[1];
}
ctx.fillStyle = 'rgba(0,0,0,0.2)';
ctx.strokeStyle = '#999999';
ctx.lineWidth = 1.0;
ctx.clearRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx.fillRect(0,0,ctx.canvas.width, ctx.canvas.height);
ctx.clearRect(l, t, w, h);
// IE won't show transparent fill rect, so stroke a rect also.
ctx.strokeRect(l,t,w,h);
ctx = null;
}
$.jqplot.CursorLegendRenderer = function(options) {
$.jqplot.TableLegendRenderer.call(this, options);
this.formatString = '%s';
};
$.jqplot.CursorLegendRenderer.prototype = new $.jqplot.TableLegendRenderer();
$.jqplot.CursorLegendRenderer.prototype.constructor = $.jqplot.CursorLegendRenderer;
// called in context of a Legend
$.jqplot.CursorLegendRenderer.prototype.draw = function() {
if (this._elem) {
this._elem.emptyForce();
this._elem = null;
}
if (this.show) {
var series = this._series, s;
// make a table. one line label per row.
var elem = document.createElement('div');
this._elem = $(elem);
elem = null;
this._elem.addClass('jqplot-legend jqplot-cursor-legend');
this._elem.css('position', 'absolute');
var pad = false;
for (var i = 0; i< series.length; i++) {
s = series[i];
if (s.show && s.showLabel) {
var lt = $.jqplot.sprintf(this.formatString, s.label.toString());
if (lt) {
var color = s.color;
if (s._stack && !s.fill) {
color = '';
}
addrow.call(this, lt, color, pad, i);
pad = true;
}
// let plugins add more rows to legend. Used by trend line plugin.
for (var j=0; j<$.jqplot.addLegendRowHooks.length; j++) {
var item = $.jqplot.addLegendRowHooks[j].call(this, s);
if (item) {
addrow.call(this, item.label, item.color, pad);
pad = true;
}
}
}
}
series = s = null;
delete series;
delete s;
}
function addrow(label, color, pad, idx) {
var rs = (pad) ? this.rowSpacing : '0';
var tr = $('<tr class="jqplot-legend jqplot-cursor-legend"></tr>').appendTo(this._elem);
tr.data('seriesIndex', idx);
$('<td class="jqplot-legend jqplot-cursor-legend-swatch" style="padding-top:'+rs+';">'+
'<div style="border:1px solid #cccccc;padding:0.2em;">'+
'<div class="jqplot-cursor-legend-swatch" style="background-color:'+color+';"></div>'+
'</div></td>').appendTo(tr);
var td = $('<td class="jqplot-legend jqplot-cursor-legend-label" style="vertical-align:middle;padding-top:'+rs+';"></td>');
td.appendTo(tr);
td.data('seriesIndex', idx);
if (this.escapeHtml) {
td.text(label);
}
else {
td.html(label);
}
tr = null;
td = null;
}
return this._elem;
};
})(jQuery);