+++ /dev/null
-/* Javascript plotting library for jQuery, v. 0.4.
- *
- * Released under the MIT license by iola, December 2007.
- *
- */
-
-(function($) {
- function Plot(target_, data_, options_) {
- // data is on the form:
- // [ series1, series2 ... ]
- // where series is either just the data as [ [x1, y1], [x2, y2], ... ]
- // or { data: [ [x1, y1], [x2, y2], ... ], label: "some label" }
-
- var series = [];
- var options = {
- // the color theme used for graphs
- colors: ["#edc240", "#afd8f8", "#cb4b4b", "#4da74d", "#9440ed"],
- legend: {
- show: true,
- noColumns: 1, // number of colums in legend table
- labelFormatter: null, // fn: string -> string
- labelBoxBorderColor: "#ccc", // border color for the little label boxes
- container: null, // container (as jQuery object) to put legend in, null means default on top of graph
- position: "ne", // position of default legend container within plot
- margin: 5, // distance from grid edge to default legend container within plot
- backgroundColor: null, // null means auto-detect
- backgroundOpacity: 0.85 // set to 0 to avoid background
- },
- xaxis: {
- mode: null, // null or "time"
- min: null, // min. value to show, null means set automatically
- max: null, // max. value to show, null means set automatically
- autoscaleMargin: null, // margin in % to add if auto-setting min/max
- ticks: null, // either [1, 3] or [[1, "a"], 3] or (fn: axis info -> ticks) or app. number of ticks for auto-ticks
- tickFormatter: null, // fn: number -> string
-
- // mode specific options
- tickDecimals: null, // no. of decimals, null means auto
- tickSize: null, // number or [number, "unit"]
- minTickSize: null, // number or [number, "unit"]
- monthNames: null, // list of names of months
- timeformat: null // format string to use
- },
- yaxis: {
- autoscaleMargin: 0.02
- },
- points: {
- show: false,
- radius: 3,
- lineWidth: 2, // in pixels
- fill: true,
- fillColor: "#ffffff"
- },
- lines: {
- show: false,
- lineWidth: 2, // in pixels
- fill: false,
- fillColor: null
- },
- bars: {
- show: false,
- lineWidth: 2, // in pixels
- barWidth: 1, // in units of the x axis
- fill: true,
- fillColor: null
- },
- grid: {
- color: "#545454", // primary color used for outline and labels
- backgroundColor: null, // null for transparent, else color
- tickColor: "#dddddd", // color used for the ticks
- labelMargin: 3, // in pixels
- borderWidth: 2,
- clickable: null,
- coloredAreas: null, // array of { x1, y1, x2, y2 } or fn: plot area -> areas
- coloredAreasColor: "#f4f4f4"
- },
- selection: {
- mode: null, // one of null, "x", "y" or "xy"
- color: "#e8cfac"
- },
- shadowSize: 4
- };
- var canvas = null, overlay = null, eventHolder = null,
- ctx = null, octx = null,
- target = target_,
- xaxis = {}, yaxis = {},
- plotOffset = { left: 0, right: 0, top: 0, bottom: 0},
- yLabelMaxWidth = 0, yLabelMaxHeight = 0, xLabelBoxWidth = 0,
- canvasWidth = 0, canvasHeight = 0,
- plotWidth = 0, plotHeight = 0,
- hozScale = 0, vertScale = 0,
- // dedicated to storing data for buggy standard compliance cases
- workarounds = {};
-
- this.setData = setData;
- this.setupGrid = setupGrid;
- this.draw = draw;
- this.clearSelection = clearSelection;
- this.setSelection = setSelection;
- this.getCanvas = function() { return canvas; };
- this.getPlotOffset = function() { return plotOffset; };
- this.getData = function() { return series; };
- this.getAxes = function() { return { xaxis: xaxis, yaxis: yaxis }; };
-
- // initialize
- parseOptions(options_);
- setData(data_);
- constructCanvas();
- setupGrid();
- draw();
-
-
- function setData(d) {
- series = parseData(d);
-
- fillInSeriesOptions();
- processData();
- }
-
- function parseData(d) {
- var res = [];
- for (var i = 0; i < d.length; ++i) {
- var s;
- if (d[i].data) {
- s = {};
- for (var v in d[i])
- s[v] = d[i][v];
- }
- else {
- s = { data: d[i] };
- }
- res.push(s);
- }
-
- return res;
- }
-
- function parseOptions(o) {
- $.extend(true, options, o);
-
- // backwards compatibility, to be removed in future
- if (options.xaxis.noTicks && options.xaxis.ticks == null)
- options.xaxis.ticks = options.xaxis.noTicks;
- if (options.yaxis.noTicks && options.yaxis.ticks == null)
- options.yaxis.ticks = options.yaxis.noTicks;
- }
-
- function fillInSeriesOptions() {
- var i;
-
- // collect what we already got of colors
- var neededColors = series.length;
- var usedColors = [];
- var assignedColors = [];
- for (i = 0; i < series.length; ++i) {
- var sc = series[i].color;
- if (sc != null) {
- --neededColors;
- if (typeof sc == "number")
- assignedColors.push(sc);
- else
- usedColors.push(parseColor(series[i].color));
- }
- }
-
- // we might need to generate more colors if higher indices
- // are assigned
- for (i = 0; i < assignedColors.length; ++i) {
- neededColors = Math.max(neededColors, assignedColors[i] + 1);
- }
-
- // produce colors as needed
- var colors = [];
- var variation = 0;
- i = 0;
- while (colors.length < neededColors) {
- var c;
- if (options.colors.length == i) // check degenerate case
- c = new Color(100, 100, 100);
- else
- c = parseColor(options.colors[i]);
-
- // vary color if needed
- var sign = variation % 2 == 1 ? -1 : 1;
- var factor = 1 + sign * Math.ceil(variation / 2) * 0.2;
- c.scale(factor, factor, factor);
-
- // FIXME: if we're getting to close to something else,
- // we should probably skip this one
- colors.push(c);
-
- ++i;
- if (i >= options.colors.length) {
- i = 0;
- ++variation;
- }
- }
-
- // fill in the options
- var colori = 0, s;
- for (i = 0; i < series.length; ++i) {
- s = series[i];
-
- // assign colors
- if (s.color == null) {
- s.color = colors[colori].toString();
- ++colori;
- }
- else if (typeof s.color == "number")
- s.color = colors[s.color].toString();
-
- // copy the rest
- s.lines = $.extend(true, {}, options.lines, s.lines);
- s.points = $.extend(true, {}, options.points, s.points);
- s.bars = $.extend(true, {}, options.bars, s.bars);
- if (s.shadowSize == null)
- s.shadowSize = options.shadowSize;
- }
- }
-
- function processData() {
- xaxis.datamin = yaxis.datamin = Number.MAX_VALUE;
- xaxis.datamax = yaxis.datamax = Number.MIN_VALUE;
-
- for (var i = 0; i < series.length; ++i) {
- var data = series[i].data;
- for (var j = 0; j < data.length; ++j) {
- if (data[j] == null)
- continue;
-
- var x = data[j][0], y = data[j][1];
-
- // convert to number
- if (x == null || y == null || isNaN(x = +x) || isNaN(y = +y)) {
- data[j] = null; // mark this point as invalid
- continue;
- }
-
- if (x < xaxis.datamin)
- xaxis.datamin = x;
- if (x > xaxis.datamax)
- xaxis.datamax = x;
- if (y < yaxis.datamin)
- yaxis.datamin = y;
- if (y > yaxis.datamax)
- yaxis.datamax = y;
- }
- }
-
- if (xaxis.datamin == Number.MAX_VALUE)
- xaxis.datamin = 0;
- if (yaxis.datamin == Number.MAX_VALUE)
- yaxis.datamin = 0;
- if (xaxis.datamax == Number.MIN_VALUE)
- xaxis.datamax = 1;
- if (yaxis.datamax == Number.MIN_VALUE)
- yaxis.datamax = 1;
- }
-
- function constructCanvas() {
- canvasWidth = target.width();
- canvasHeight = target.height();
- target.html(""); // clear target
- target.css("position", "relative"); // for positioning labels and overlay
-
- if (canvasWidth <= 0 || canvasHeight <= 0)
- throw "Invalid dimensions for plot, width = " + canvasWidth + ", height = " + canvasHeight;
-
- // the canvas
- canvas = $('<canvas width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
- if ($.browser.msie) // excanvas hack
- canvas = window.G_vmlCanvasManager.initElement(canvas);
- ctx = canvas.getContext("2d");
-
- // overlay canvas for interactive features
- overlay = $('<canvas style="position:absolute;left:0px;top:0px;" width="' + canvasWidth + '" height="' + canvasHeight + '"></canvas>').appendTo(target).get(0);
- if ($.browser.msie) // excanvas hack
- overlay = window.G_vmlCanvasManager.initElement(overlay);
- octx = overlay.getContext("2d");
-
- // we include the canvas in the event holder too, because IE 7
- // sometimes has trouble with the stacking order
- eventHolder = $([overlay, canvas]);
-
-
- // bind events
- if (options.selection.mode != null) {
- eventHolder.mousedown(onMouseDown);
-
- // FIXME: temp. work-around until jQuery bug 1871 is fixed
- eventHolder.each(function () {
- this.onmousemove = onMouseMove;
- });
- }
-
- if (options.grid.clickable)
- eventHolder.click(onClick);
- }
-
- function setupGrid() {
- // x axis
- setRange(xaxis, options.xaxis);
- prepareTickGeneration(xaxis, options.xaxis);
- setTicks(xaxis, options.xaxis);
- extendXRangeIfNeededByBar();
-
- // y axis
- setRange(yaxis, options.yaxis);
- prepareTickGeneration(yaxis, options.yaxis);
- setTicks(yaxis, options.yaxis);
-
- setSpacing();
- insertLabels();
- insertLegend();
- }
-
- function setRange(axis, axisOptions) {
- var min = axisOptions.min != null ? axisOptions.min : axis.datamin;
- var max = axisOptions.max != null ? axisOptions.max : axis.datamax;
-
- if (max - min == 0.0) {
- // degenerate case
- var widen;
- if (max == 0.0)
- widen = 1.0;
- else
- widen = 0.01;
-
- min -= widen;
- max += widen;
- }
- else {
- // consider autoscaling
- var margin = axisOptions.autoscaleMargin;
- if (margin != null) {
- if (axisOptions.min == null) {
- min -= (max - min) * margin;
- // make sure we don't go below zero if all values
- // are positive
- if (min < 0 && axis.datamin >= 0)
- min = 0;
- }
- if (axisOptions.max == null) {
- max += (max - min) * margin;
- if (max > 0 && axis.datamax <= 0)
- max = 0;
- }
- }
- }
- axis.min = min;
- axis.max = max;
- }
-
- function prepareTickGeneration(axis, axisOptions) {
- // estimate number of ticks
- var noTicks;
- if (typeof axisOptions.ticks == "number" && axisOptions.ticks > 0)
- noTicks = axisOptions.ticks;
- else if (axis == xaxis)
- noTicks = canvasWidth / 100;
- else
- noTicks = canvasHeight / 60;
-
- var delta = (axis.max - axis.min) / noTicks;
- var size, generator, unit, formatter, i, magn, norm;
-
- if (axisOptions.mode == "time") {
- // pretty handling of time
-
- function formatDate(d, fmt, monthNames) {
- var leftPad = function(n) {
- n = "" + n;
- return n.length == 1 ? "0" + n : n;
- };
-
- var r = [];
- var escape = false;
- if (monthNames == null)
- monthNames = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
- for (var i = 0; i < fmt.length; ++i) {
- var c = fmt.charAt(i);
-
- if (escape) {
- switch (c) {
- case 'h': c = "" + d.getHours(); break;
- case 'H': c = leftPad(d.getHours()); break;
- case 'M': c = leftPad(d.getMinutes()); break;
- case 'S': c = leftPad(d.getSeconds()); break;
- case 'd': c = "" + d.getDate(); break;
- case 'm': c = "" + (d.getMonth() + 1); break;
- case 'y': c = "" + d.getFullYear(); break;
- case 'b': c = "" + monthNames[d.getMonth()]; break;
- }
- r.push(c);
- escape = false;
- }
- else {
- if (c == "%")
- escape = true;
- else
- r.push(c);
- }
- }
- return r.join("");
- }
-
-
- // map of app. size of time units in milliseconds
- var timeUnitSize = {
- "second": 1000,
- "minute": 60 * 1000,
- "hour": 60 * 60 * 1000,
- "day": 24 * 60 * 60 * 1000,
- "month": 30 * 24 * 60 * 60 * 1000,
- "year": 365.2425 * 24 * 60 * 60 * 1000
- };
-
-
- // the allowed tick sizes, after 1 year we use
- // an integer algorithm
- var spec = [
- [1, "second"], [2, "second"], [5, "second"], [10, "second"],
- [30, "second"],
- [1, "minute"], [2, "minute"], [5, "minute"], [10, "minute"],
- [30, "minute"],
- [1, "hour"], [2, "hour"], [4, "hour"],
- [8, "hour"], [12, "hour"],
- [1, "day"], [2, "day"], [3, "day"],
- [0.25, "month"], [0.5, "month"], [1, "month"],
- [2, "month"], [3, "month"], [6, "month"],
- [1, "year"]
- ];
-
- var minSize = 0;
- if (axisOptions.minTickSize != null) {
- if (typeof axisOptions.tickSize == "number")
- minSize = axisOptions.tickSize;
- else
- minSize = axisOptions.minTickSize[0] * timeUnitSize[axisOptions.minTickSize[1]];
- }
-
- for (i = 0; i < spec.length - 1; ++i)
- if (delta < (spec[i][0] * timeUnitSize[spec[i][1]]
- + spec[i + 1][0] * timeUnitSize[spec[i + 1][1]]) / 2
- && spec[i][0] * timeUnitSize[spec[i][1]] >= minSize)
- break;
- size = spec[i][0];
- unit = spec[i][1];
-
- // special-case the possibility of several years
- if (unit == "year") {
- magn = Math.pow(10, Math.floor(Math.log(delta / timeUnitSize.year) / Math.LN10));
- norm = (delta / timeUnitSize.year) / magn;
- if (norm < 1.5)
- size = 1;
- else if (norm < 3)
- size = 2;
- else if (norm < 7.5)
- size = 5;
- else
- size = 10;
-
- size *= magn;
- }
-
- if (axisOptions.tickSize) {
- size = axisOptions.tickSize[0];
- unit = axisOptions.tickSize[1];
- }
-
- generator = function(axis) {
- var ticks = [],
- tickSize = axis.tickSize[0], unit = axis.tickSize[1],
- d = new Date(axis.min);
-
- var step = tickSize * timeUnitSize[unit];
-
- if (unit == "second")
- d.setSeconds(floorInBase(d.getSeconds(), tickSize));
- if (unit == "minute")
- d.setMinutes(floorInBase(d.getMinutes(), tickSize));
- if (unit == "hour")
- d.setHours(floorInBase(d.getHours(), tickSize));
- if (unit == "month")
- d.setMonth(floorInBase(d.getMonth(), tickSize));
- if (unit == "year")
- d.setFullYear(floorInBase(d.getFullYear(), tickSize));
-
- // reset smaller components
- d.setMilliseconds(0);
- if (step >= timeUnitSize.minute)
- d.setSeconds(0);
- if (step >= timeUnitSize.hour)
- d.setMinutes(0);
- if (step >= timeUnitSize.day)
- d.setHours(0);
- if (step >= timeUnitSize.day * 4)
- d.setDate(1);
- if (step >= timeUnitSize.year)
- d.setMonth(0);
-
-
- var carry = 0, v;
- do {
- v = d.getTime();
- ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
- if (unit == "month") {
- if (tickSize < 1) {
- // a bit complicated - we'll divide the month
- // up but we need to take care of fractions
- // so we don't end up in the middle of a day
- d.setDate(1);
- var start = d.getTime();
- d.setMonth(d.getMonth() + 1);
- var end = d.getTime();
- d.setTime(v + carry * timeUnitSize.hour + (end - start) * tickSize);
- carry = d.getHours();
- d.setHours(0);
- }
- else
- d.setMonth(d.getMonth() + tickSize);
- }
- else if (unit == "year") {
- d.setFullYear(d.getFullYear() + tickSize);
- }
- else
- d.setTime(v + step);
- } while (v < axis.max);
-
- return ticks;
- };
-
- formatter = function (v, axis) {
- var d = new Date(v);
-
- // first check global format
- if (axisOptions.timeformat != null)
- return formatDate(d, axisOptions.timeformat, axisOptions.monthNames);
-
- var t = axis.tickSize[0] * timeUnitSize[axis.tickSize[1]];
- var span = axis.max - axis.min;
-
- if (t < timeUnitSize.minute)
- fmt = "%h:%M:%S";
- else if (t < timeUnitSize.day) {
- if (span < 2 * timeUnitSize.day)
- fmt = "%h:%M";
- else
- fmt = "%b %d %h:%M";
- }
- else if (t < timeUnitSize.month)
- fmt = "%b %d";
- else if (t < timeUnitSize.year) {
- if (span < timeUnitSize.year)
- fmt = "%b";
- else
- fmt = "%b %y";
- }
- else
- fmt = "%y";
-
- return formatDate(d, fmt, axisOptions.monthNames);
- };
- }
- else {
- // pretty rounding of base-10 numbers
- var maxDec = axisOptions.tickDecimals;
- var dec = -Math.floor(Math.log(delta) / Math.LN10);
- if (maxDec != null && dec > maxDec)
- dec = maxDec;
-
- magn = Math.pow(10, -dec);
- norm = delta / magn; // norm is between 1.0 and 10.0
-
- if (norm < 1.5)
- size = 1;
- else if (norm < 3) {
- size = 2;
- // special case for 2.5, requires an extra decimal
- if (norm > 2.25 && (maxDec == null || dec + 1 <= maxDec)) {
- size = 2.5;
- ++dec;
- }
- }
- else if (norm < 7.5)
- size = 5;
- else
- size = 10;
-
- size *= magn;
-
- if (axisOptions.minTickSize != null && size < axisOptions.minTickSize)
- size = axisOptions.minTickSize;
-
- if (axisOptions.tickSize != null)
- size = axisOptions.tickSize;
-
- axis.tickDecimals = Math.max(0, (maxDec != null) ? maxDec : dec);
-
- generator = function (axis) {
- var ticks = [];
- var start = floorInBase(axis.min, axis.tickSize);
- // then spew out all possible ticks
- var i = 0, v;
- do {
- v = start + i * axis.tickSize;
- ticks.push({ v: v, label: axis.tickFormatter(v, axis) });
- ++i;
- } while (v < axis.max);
- return ticks;
- };
-
- formatter = function (v, axis) {
- return v.toFixed(axis.tickDecimals);
- };
- }
-
- axis.tickSize = unit ? [size, unit] : size;
- axis.tickGenerator = generator;
- if ($.isFunction(axisOptions.tickFormatter))
- axis.tickFormatter = function (v, axis) { return "" + axisOptions.tickFormatter(v, axis); };
- else
- axis.tickFormatter = formatter;
- }
-
- function extendXRangeIfNeededByBar() {
- if (options.xaxis.max == null) {
- // great, we're autoscaling, check if we might need a bump
-
- var newmax = xaxis.max;
- for (var i = 0; i < series.length; ++i)
- if (series[i].bars.show && series[i].bars.barWidth + xaxis.datamax > newmax)
- newmax = xaxis.datamax + series[i].bars.barWidth;
- xaxis.max = newmax;
- }
- }
-
- function setTicks(axis, axisOptions) {
- axis.ticks = [];
-
- if (axisOptions.ticks == null)
- axis.ticks = axis.tickGenerator(axis);
- else if (typeof axisOptions.ticks == "number") {
- if (axisOptions.ticks > 0)
- axis.ticks = axis.tickGenerator(axis);
- }
- else if (axisOptions.ticks) {
- var ticks = axisOptions.ticks;
-
- if ($.isFunction(ticks))
- // generate the ticks
- ticks = ticks({ min: axis.min, max: axis.max });
-
- // clean up the user-supplied ticks, copy them over
- var i, v;
- for (i = 0; i < ticks.length; ++i) {
- var label = null;
- var t = ticks[i];
- if (typeof t == "object") {
- v = t[0];
- if (t.length > 1)
- label = t[1];
- }
- else
- v = t;
- if (label == null)
- label = axis.tickFormatter(v, axis);
- axis.ticks[i] = { v: v, label: label };
- }
- }
-
- if (axisOptions.autoscaleMargin != null && axis.ticks.length > 0) {
- // snap to ticks
- if (axisOptions.min == null)
- axis.min = Math.min(axis.min, axis.ticks[0].v);
- if (axisOptions.max == null && axis.ticks.length > 1)
- axis.max = Math.min(axis.max, axis.ticks[axis.ticks.length - 1].v);
- }
- }
-
- function setSpacing() {
- // calculate y label dimensions
- var i, labels = [], l;
- for (i = 0; i < yaxis.ticks.length; ++i) {
- l = yaxis.ticks[i].label;
- if (l)
- labels.push('<div class="tickLabel">' + l + '</div>');
- }
-
- if (labels.length > 0) {
- var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">'
- + labels.join("") + '</div>').appendTo(target);
- yLabelMaxWidth = dummyDiv.width();
- yLabelMaxHeight = dummyDiv.find("div").height();
- dummyDiv.remove();
- }
-
- var maxOutset = options.grid.borderWidth;
- if (options.points.show)
- maxOutset = Math.max(maxOutset, options.points.radius + options.points.lineWidth/2);
- for (i = 0; i < series.length; ++i) {
- if (series[i].points.show)
- maxOutset = Math.max(maxOutset, series[i].points.radius + series[i].points.lineWidth/2);
- }
-
- plotOffset.left = plotOffset.right = plotOffset.top = plotOffset.bottom = maxOutset;
-
- plotOffset.left += yLabelMaxWidth + options.grid.labelMargin;
- plotWidth = canvasWidth - plotOffset.left - plotOffset.right;
-
- // set width for labels; to avoid measuring the widths of
- // the labels, we construct fixed-size boxes and put the
- // labels inside them, the fixed-size boxes are easy to
- // mid-align
- xLabelBoxWidth = plotWidth / 6;
-
- // measure x label heights
- labels = [];
- for (i = 0; i < xaxis.ticks.length; ++i) {
- l = xaxis.ticks[i].label;
- if (l)
- labels.push('<span class="tickLabel" width="' + xLabelBoxWidth + '">' + l + '</span>');
- }
-
- var xLabelMaxHeight = 0;
- if (labels.length > 0) {
- var dummyDiv = $('<div style="position:absolute;top:-10000px;font-size:smaller">'
- + labels.join("") + '</div>').appendTo(target);
- xLabelMaxHeight = dummyDiv.height();
- dummyDiv.remove();
- }
-
- plotOffset.bottom += xLabelMaxHeight + options.grid.labelMargin;
- plotHeight = canvasHeight - plotOffset.bottom - plotOffset.top;
- hozScale = plotWidth / (xaxis.max - xaxis.min);
- vertScale = plotHeight / (yaxis.max - yaxis.min);
- }
-
- function draw() {
- drawGrid();
- for (var i = 0; i < series.length; i++) {
- drawSeries(series[i]);
- }
- }
-
- function tHoz(x) {
- return (x - xaxis.min) * hozScale;
- }
-
- function tVert(y) {
- return plotHeight - (y - yaxis.min) * vertScale;
- }
-
- function drawGrid() {
- var i;
-
- ctx.save();
- ctx.clearRect(0, 0, canvasWidth, canvasHeight);
- ctx.translate(plotOffset.left, plotOffset.top);
-
- // draw background, if any
- if (options.grid.backgroundColor != null) {
- ctx.fillStyle = options.grid.backgroundColor;
- ctx.fillRect(0, 0, plotWidth, plotHeight);
- }
-
- // draw colored areas
- if (options.grid.coloredAreas) {
- var areas = options.grid.coloredAreas;
- if ($.isFunction(areas))
- areas = areas({ xmin: xaxis.min, xmax: xaxis.max, ymin: yaxis.min, ymax: yaxis.max });
-
- for (i = 0; i < areas.length; ++i) {
- var a = areas[i];
-
- // clip
- if (a.x1 == null || a.x1 < xaxis.min)
- a.x1 = xaxis.min;
- if (a.x2 == null || a.x2 > xaxis.max)
- a.x2 = xaxis.max;
- if (a.y1 == null || a.y1 < yaxis.min)
- a.y1 = yaxis.min;
- if (a.y2 == null || a.y2 > yaxis.max)
- a.y2 = yaxis.max;
-
- var tmp;
- if (a.x1 > a.x2) {
- tmp = a.x1;
- a.x1 = a.x2;
- a.x2 = tmp;
- }
- if (a.y1 > a.y2) {
- tmp = a.y1;
- a.y1 = a.y2;
- a.y2 = tmp;
- }
-
- if (a.x1 >= xaxis.max || a.x2 <= xaxis.min || a.x1 == a.x2
- || a.y1 >= yaxis.max || a.y2 <= yaxis.min || a.y1 == a.y2)
- continue;
-
- ctx.fillStyle = a.color || options.grid.coloredAreasColor;
- ctx.fillRect(Math.floor(tHoz(a.x1)), Math.floor(tVert(a.y2)),
- Math.floor(tHoz(a.x2) - tHoz(a.x1)), Math.floor(tVert(a.y1) - tVert(a.y2)));
- }
- }
-
- // draw the inner grid
- ctx.lineWidth = 1;
- ctx.strokeStyle = options.grid.tickColor;
- ctx.beginPath();
- var v;
- for (i = 0; i < xaxis.ticks.length; ++i) {
- v = xaxis.ticks[i].v;
- if (v <= xaxis.min || v >= xaxis.max)
- continue; // skip those lying on the axes
-
- ctx.moveTo(Math.floor(tHoz(v)) + ctx.lineWidth/2, 0);
- ctx.lineTo(Math.floor(tHoz(v)) + ctx.lineWidth/2, plotHeight);
- }
-
- for (i = 0; i < yaxis.ticks.length; ++i) {
- v = yaxis.ticks[i].v;
- if (v <= yaxis.min || v >= yaxis.max)
- continue;
-
- ctx.moveTo(0, Math.floor(tVert(v)) + ctx.lineWidth/2);
- ctx.lineTo(plotWidth, Math.floor(tVert(v)) + ctx.lineWidth/2);
- }
- ctx.stroke();
-
- if (options.grid.borderWidth) {
- // draw border
- ctx.lineWidth = options.grid.borderWidth;
- ctx.strokeStyle = options.grid.color;
- ctx.lineJoin = "round";
- ctx.strokeRect(0, 0, plotWidth, plotHeight);
- ctx.restore();
- }
- }
-
- function insertLabels() {
- target.find(".tickLabels").remove();
-
- var i, tick;
- var html = '<div class="tickLabels" style="font-size:smaller;color:' + options.grid.color + '">';
-
- // do the x-axis
- for (i = 0; i < xaxis.ticks.length; ++i) {
- tick = xaxis.ticks[i];
- if (!tick.label || tick.v < xaxis.min || tick.v > xaxis.max)
- continue;
- html += '<div style="position:absolute;top:' + (plotOffset.top + plotHeight + options.grid.labelMargin) + 'px;left:' + (plotOffset.left + tHoz(tick.v) - xLabelBoxWidth/2) + 'px;width:' + xLabelBoxWidth + 'px;text-align:center" class="tickLabel">' + tick.label + "</div>";
- }
-
- // do the y-axis
- for (i = 0; i < yaxis.ticks.length; ++i) {
- tick = yaxis.ticks[i];
- if (!tick.label || tick.v < yaxis.min || tick.v > yaxis.max)
- continue;
- html += '<div style="position:absolute;top:' + (plotOffset.top + tVert(tick.v) - yLabelMaxHeight/2) + 'px;left:0;width:' + yLabelMaxWidth + 'px;text-align:right" class="tickLabel">' + tick.label + "</div>";
- }
-
- html += '</div>';
-
- target.append(html);
- }
-
- function drawSeries(series) {
- if (series.lines.show || (!series.bars.show && !series.points.show))
- drawSeriesLines(series);
- if (series.bars.show)
- drawSeriesBars(series);
- if (series.points.show)
- drawSeriesPoints(series);
- }
-
- function drawSeriesLines(series) {
- function plotLine(data, offset) {
- var prev, cur = null, drawx = null, drawy = null;
-
- ctx.beginPath();
- for (var i = 0; i < data.length; ++i) {
- prev = cur;
- cur = data[i];
-
- if (prev == null || cur == null)
- continue;
-
- var x1 = prev[0], y1 = prev[1],
- x2 = cur[0], y2 = cur[1];
-
- // clip with ymin
- if (y1 <= y2 && y1 < yaxis.min) {
- if (y2 < yaxis.min)
- continue; // line segment is outside
- // compute new intersection point
- x1 = (yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
- y1 = yaxis.min;
- }
- else if (y2 <= y1 && y2 < yaxis.min) {
- if (y1 < yaxis.min)
- continue;
- x2 = (yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
- y2 = yaxis.min;
- }
-
- // clip with ymax
- if (y1 >= y2 && y1 > yaxis.max) {
- if (y2 > yaxis.max)
- continue;
- x1 = (yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
- y1 = yaxis.max;
- }
- else if (y2 >= y1 && y2 > yaxis.max) {
- if (y1 > yaxis.max)
- continue;
- x2 = (yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
- y2 = yaxis.max;
- }
-
- // clip with xmin
- if (x1 <= x2 && x1 < xaxis.min) {
- if (x2 < xaxis.min)
- continue;
- y1 = (xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
- x1 = xaxis.min;
- }
- else if (x2 <= x1 && x2 < xaxis.min) {
- if (x1 < xaxis.min)
- continue;
- y2 = (xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
- x2 = xaxis.min;
- }
-
- // clip with xmax
- if (x1 >= x2 && x1 > xaxis.max) {
- if (x2 > xaxis.max)
- continue;
- y1 = (xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
- x1 = xaxis.max;
- }
- else if (x2 >= x1 && x2 > xaxis.max) {
- if (x1 > xaxis.max)
- continue;
- y2 = (xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
- x2 = xaxis.max;
- }
-
- if (drawx != tHoz(x1) || drawy != tVert(y1) + offset)
- ctx.moveTo(tHoz(x1), tVert(y1) + offset);
-
- drawx = tHoz(x2);
- drawy = tVert(y2) + offset;
- ctx.lineTo(drawx, drawy);
- }
- ctx.stroke();
- }
-
- function plotLineArea(data) {
- var prev, cur = null;
-
- var bottom = Math.min(Math.max(0, yaxis.min), yaxis.max);
- var top, lastX = 0;
-
- var areaOpen = false;
-
- for (var i = 0; i < data.length; ++i) {
- prev = cur;
- cur = data[i];
-
- if (areaOpen && prev != null && cur == null) {
- // close area
- ctx.lineTo(tHoz(lastX), tVert(bottom));
- ctx.fill();
- areaOpen = false;
- continue;
- }
-
- if (prev == null || cur == null)
- continue;
-
- var x1 = prev[0], y1 = prev[1],
- x2 = cur[0], y2 = cur[1];
-
- // clip x values
-
- // clip with xmin
- if (x1 <= x2 && x1 < xaxis.min) {
- if (x2 < xaxis.min)
- continue;
- y1 = (xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
- x1 = xaxis.min;
- }
- else if (x2 <= x1 && x2 < xaxis.min) {
- if (x1 < xaxis.min)
- continue;
- y2 = (xaxis.min - x1) / (x2 - x1) * (y2 - y1) + y1;
- x2 = xaxis.min;
- }
-
- // clip with xmax
- if (x1 >= x2 && x1 > xaxis.max) {
- if (x2 > xaxis.max)
- continue;
- y1 = (xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
- x1 = xaxis.max;
- }
- else if (x2 >= x1 && x2 > xaxis.max) {
- if (x1 > xaxis.max)
- continue;
- y2 = (xaxis.max - x1) / (x2 - x1) * (y2 - y1) + y1;
- x2 = xaxis.max;
- }
-
- if (!areaOpen) {
- // open area
- ctx.beginPath();
- ctx.moveTo(tHoz(x1), tVert(bottom));
- areaOpen = true;
- }
-
- // now first check the case where both is outside
- if (y1 >= yaxis.max && y2 >= yaxis.max) {
- ctx.lineTo(tHoz(x1), tVert(yaxis.max));
- ctx.lineTo(tHoz(x2), tVert(yaxis.max));
- continue;
- }
- else if (y1 <= yaxis.min && y2 <= yaxis.min) {
- ctx.lineTo(tHoz(x1), tVert(yaxis.min));
- ctx.lineTo(tHoz(x2), tVert(yaxis.min));
- continue;
- }
-
- // else it's a bit more complicated, there might
- // be two rectangles and two triangles we need to fill
- // in; to find these keep track of the current x values
- var x1old = x1, x2old = x2;
-
- // and clip the y values, without shortcutting
-
- // clip with ymin
- if (y1 <= y2 && y1 < yaxis.min && y2 >= yaxis.min) {
- x1 = (yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
- y1 = yaxis.min;
- }
- else if (y2 <= y1 && y2 < yaxis.min && y1 >= yaxis.min) {
- x2 = (yaxis.min - y1) / (y2 - y1) * (x2 - x1) + x1;
- y2 = yaxis.min;
- }
-
- // clip with ymax
- if (y1 >= y2 && y1 > yaxis.max && y2 <= yaxis.max) {
- x1 = (yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
- y1 = yaxis.max;
- }
- else if (y2 >= y1 && y2 > yaxis.max && y1 <= yaxis.max) {
- x2 = (yaxis.max - y1) / (y2 - y1) * (x2 - x1) + x1;
- y2 = yaxis.max;
- }
-
-
- // if the x value was changed we got a rectangle
- // to fill
- if (x1 != x1old) {
- if (y1 <= yaxis.min)
- top = yaxis.min;
- else
- top = yaxis.max;
-
- ctx.lineTo(tHoz(x1old), tVert(top));
- ctx.lineTo(tHoz(x1), tVert(top));
- }
-
- // fill the triangles
- ctx.lineTo(tHoz(x1), tVert(y1));
- ctx.lineTo(tHoz(x2), tVert(y2));
-
- // fill the other rectangle if it's there
- if (x2 != x2old) {
- if (y2 <= yaxis.min)
- top = yaxis.min;
- else
- top = yaxis.max;
-
- ctx.lineTo(tHoz(x2old), tVert(top));
- ctx.lineTo(tHoz(x2), tVert(top));
- }
-
- lastX = Math.max(x2, x2old);
- }
-
- if (areaOpen) {
- ctx.lineTo(tHoz(lastX), tVert(bottom));
- ctx.fill();
- }
- }
-
- ctx.save();
- ctx.translate(plotOffset.left, plotOffset.top);
- ctx.lineJoin = "round";
-
- var lw = series.lines.lineWidth;
- var sw = series.shadowSize;
- // FIXME: consider another form of shadow when filling is turned on
- if (sw > 0) {
- // draw shadow in two steps
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.1)";
- plotLine(series.data, lw/2 + sw/2 + ctx.lineWidth/2);
-
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.2)";
- plotLine(series.data, lw/2 + ctx.lineWidth/2);
- }
-
- ctx.lineWidth = lw;
- ctx.strokeStyle = series.color;
- if (series.lines.fill) {
- ctx.fillStyle = series.lines.fillColor != null ? series.lines.fillColor : parseColor(series.color).scale(null, null, null, 0.4).toString();
- plotLineArea(series.data, 0);
- }
-
- plotLine(series.data, 0);
- ctx.restore();
- }
-
- function drawSeriesPoints(series) {
- function plotPoints(data, radius, fill) {
- for (var i = 0; i < data.length; ++i) {
- if (data[i] == null)
- continue;
-
- var x = data[i][0], y = data[i][1];
- if (x < xaxis.min || x > xaxis.max || y < yaxis.min || y > yaxis.max)
- continue;
-
- ctx.beginPath();
- ctx.arc(tHoz(x), tVert(y), radius, 0, 2 * Math.PI, true);
- if (fill)
- ctx.fill();
- ctx.stroke();
- }
- }
-
- function plotPointShadows(data, offset, radius) {
- for (var i = 0; i < data.length; ++i) {
- if (data[i] == null)
- continue;
-
- var x = data[i][0], y = data[i][1];
- if (x < xaxis.min || x > xaxis.max || y < yaxis.min || y > yaxis.max)
- continue;
- ctx.beginPath();
- ctx.arc(tHoz(x), tVert(y) + offset, radius, 0, Math.PI, false);
- ctx.stroke();
- }
- }
-
- ctx.save();
- ctx.translate(plotOffset.left, plotOffset.top);
-
- var lw = series.lines.lineWidth;
- var sw = series.shadowSize;
- if (sw > 0) {
- // draw shadow in two steps
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.1)";
- plotPointShadows(series.data, sw/2 + ctx.lineWidth/2, series.points.radius);
-
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.2)";
- plotPointShadows(series.data, ctx.lineWidth/2, series.points.radius);
- }
-
- ctx.lineWidth = series.points.lineWidth;
- ctx.strokeStyle = series.color;
- ctx.fillStyle = series.points.fillColor != null ? series.points.fillColor : series.color;
- plotPoints(series.data, series.points.radius, series.points.fill);
- ctx.restore();
- }
-
- function drawSeriesBars(series) {
- function plotBars(data, barWidth, offset, fill) {
- for (var i = 0; i < data.length; i++) {
- if (data[i] == null)
- continue;
-
- var x = data[i][0], y = data[i][1];
- var drawLeft = true, drawTop = true, drawRight = true;
- var left = x, right = x + barWidth, bottom = 0, top = y;
-
- if (right < xaxis.min || left > xaxis.max || top < yaxis.min || bottom > yaxis.max)
- continue;
-
- // clip
- if (left < xaxis.min) {
- left = xaxis.min;
- drawLeft = false;
- }
-
- if (right > xaxis.max) {
- right = xaxis.max;
- drawRight = false;
- }
-
- if (bottom < yaxis.min)
- bottom = yaxis.min;
-
- if (top > yaxis.max) {
- top = yaxis.max;
- drawTop = false;
- }
-
- // fill the bar
- if (fill) {
- ctx.beginPath();
- ctx.moveTo(tHoz(left), tVert(bottom) + offset);
- ctx.lineTo(tHoz(left), tVert(top) + offset);
- ctx.lineTo(tHoz(right), tVert(top) + offset);
- ctx.lineTo(tHoz(right), tVert(bottom) + offset);
- ctx.fill();
- }
-
- // draw outline
- if (drawLeft || drawRight || drawTop) {
- ctx.beginPath();
- ctx.moveTo(tHoz(left), tVert(bottom) + offset);
- if (drawLeft)
- ctx.lineTo(tHoz(left), tVert(top) + offset);
- else
- ctx.moveTo(tHoz(left), tVert(top) + offset);
-
- if (drawTop)
- ctx.lineTo(tHoz(right), tVert(top) + offset);
- else
- ctx.moveTo(tHoz(right), tVert(top) + offset);
- if (drawRight)
- ctx.lineTo(tHoz(right), tVert(bottom) + offset);
- else
- ctx.moveTo(tHoz(right), tVert(bottom) + offset);
- ctx.stroke();
- }
- }
- }
-
- ctx.save();
- ctx.translate(plotOffset.left, plotOffset.top);
- ctx.lineJoin = "round";
-
- var bw = series.bars.barWidth;
- var lw = Math.min(series.bars.lineWidth, bw);
- // FIXME: figure out a way to add shadows
- /*
- var sw = series.shadowSize;
- if (sw > 0) {
- // draw shadow in two steps
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.1)";
- plotBars(series.data, bw, lw/2 + sw/2 + ctx.lineWidth/2, false);
-
- ctx.lineWidth = sw / 2;
- ctx.strokeStyle = "rgba(0,0,0,0.2)";
- plotBars(series.data, bw, lw/2 + ctx.lineWidth/2, false);
- }*/
-
- ctx.lineWidth = lw;
- ctx.strokeStyle = series.color;
- if (series.bars.fill) {
- ctx.fillStyle = series.bars.fillColor != null ? series.bars.fillColor : parseColor(series.color).scale(null, null, null, 0.4).toString();
- }
-
- plotBars(series.data, bw, 0, series.bars.fill);
- ctx.restore();
- }
-
- function insertLegend() {
- target.find(".legend").remove();
-
- if (!options.legend.show)
- return;
-
- var fragments = [];
- var rowStarted = false;
- for (i = 0; i < series.length; ++i) {
- if (!series[i].label)
- continue;
-
- if (i % options.legend.noColumns == 0) {
- if (rowStarted)
- fragments.push('</tr>');
- fragments.push('<tr>');
- rowStarted = true;
- }
-
- var label = series[i].label;
- if (options.legend.labelFormatter != null)
- label = options.legend.labelFormatter(label);
-
- fragments.push(
- '<td class="legendColorBox"><div style="border:1px solid ' + options.legend.labelBoxBorderColor + ';padding:1px"><div style="width:14px;height:10px;background-color:' + series[i].color + ';overflow:hidden"></div></div></td>' +
- '<td class="legendLabel">' + label + '</td>');
- }
- if (rowStarted)
- fragments.push('</tr>');
-
- if (fragments.length > 0) {
- var table = '<table style="font-size:smaller;color:' + options.grid.color + '">' + fragments.join("") + '</table>';
- if (options.legend.container != null)
- options.legend.container.append(table);
- else {
- var pos = "";
- var p = options.legend.position, m = options.legend.margin;
- if (p.charAt(0) == "n")
- pos += 'top:' + (m + plotOffset.top) + 'px;';
- else if (p.charAt(0) == "s")
- pos += 'bottom:' + (m + plotOffset.bottom) + 'px;';
- if (p.charAt(1) == "e")
- pos += 'right:' + (m + plotOffset.right) + 'px;';
- else if (p.charAt(1) == "w")
- pos += 'left:' + (m + plotOffset.bottom) + 'px;';
- var legend = $('<div class="legend">' + table.replace('style="', 'style="position:absolute;' + pos +';') + '</div>').appendTo(target);
- if (options.legend.backgroundOpacity != 0.0) {
- // put in the transparent background
- // separately to avoid blended labels and
- // label boxes
- var c = options.legend.backgroundColor;
- if (c == null) {
- var tmp;
- if (options.grid.backgroundColor != null)
- tmp = options.grid.backgroundColor;
- else
- tmp = extractColor(legend);
- c = parseColor(tmp).adjust(null, null, null, 1).toString();
- }
- var div = legend.children();
- $('<div style="position:absolute;width:' + div.width() + 'px;height:' + div.height() + 'px;' + pos +'background-color:' + c + ';"> </div>').prependTo(legend).css('opacity', options.legend.backgroundOpacity);
-
- }
- }
- }
- }
-
- var lastMousePos = { pageX: null, pageY: null };
- var selection = { first: { x: -1, y: -1}, second: { x: -1, y: -1} };
- var prevSelection = null;
- var selectionInterval = null;
- var ignoreClick = false;
-
- function onMouseMove(ev) {
- // FIXME: temp. work-around until jQuery bug 1871 is fixed
- var e = ev || window.event;
- if (e.pageX == null && e.clientX != null) {
- var de = document.documentElement, b = document.body;
- lastMousePos.pageX = e.clientX + (de && de.scrollLeft || b.scrollLeft || 0);
- lastMousePos.pageY = e.clientY + (de && de.scrollTop || b.scrollTop || 0);
- }
- else {
- lastMousePos.pageX = e.pageX;
- lastMousePos.pageY = e.pageY;
- }
- }
-
- function onMouseDown(e) {
- if (e.which != 1) // only accept left-click
- return;
-
- // cancel out any text selections
- document.body.focus();
-
- // prevent text selection and drag in old-school browsers
- if (document.onselectstart !== undefined && workarounds.onselectstart == null) {
- workarounds.onselectstart = document.onselectstart;
- document.onselectstart = function () { return false; };
- }
- if (document.ondrag !== undefined && workarounds.ondrag == null) {
- workarounds.ondrag = document.ondrag;
- document.ondrag = function () { return false; };
- }
-
- setSelectionPos(selection.first, e);
-
- if (selectionInterval != null)
- clearInterval(selectionInterval);
- lastMousePos.pageX = null;
- selectionInterval = setInterval(updateSelectionOnMouseMove, 200);
- $(document).one("mouseup", onSelectionMouseUp);
- }
-
- function onClick(e) {
- if (ignoreClick) {
- ignoreClick = false;
- return;
- }
-
- var offset = eventHolder.offset();
- var pos = {};
- pos.x = e.pageX - offset.left - plotOffset.left;
- pos.x = xaxis.min + pos.x / hozScale;
- pos.y = e.pageY - offset.top - plotOffset.top;
- pos.y = yaxis.max - pos.y / vertScale;
-
- target.trigger("plotclick", [ pos ]);
- }
-
- function triggerSelectedEvent() {
- var x1, x2, y1, y2;
- if (selection.first.x <= selection.second.x) {
- x1 = selection.first.x;
- x2 = selection.second.x;
- }
- else {
- x1 = selection.second.x;
- x2 = selection.first.x;
- }
-
- if (selection.first.y >= selection.second.y) {
- y1 = selection.first.y;
- y2 = selection.second.y;
- }
- else {
- y1 = selection.second.y;
- y2 = selection.first.y;
- }
-
- x1 = xaxis.min + x1 / hozScale;
- x2 = xaxis.min + x2 / hozScale;
-
- y1 = yaxis.max - y1 / vertScale;
- y2 = yaxis.max - y2 / vertScale;
-
- target.trigger("selected", [ { x1: x1, y1: y1, x2: x2, y2: y2 } ]);
- }
-
- function onSelectionMouseUp(e) {
- if (document.onselectstart !== undefined)
- document.onselectstart = workarounds.onselectstart;
- if (document.ondrag !== undefined)
- document.ondrag = workarounds.ondrag;
-
- if (selectionInterval != null) {
- clearInterval(selectionInterval);
- selectionInterval = null;
- }
-
- setSelectionPos(selection.second, e);
- clearSelection();
- if (!selectionIsSane() || e.which != 1)
- return false;
-
- drawSelection();
- triggerSelectedEvent();
- ignoreClick = true;
-
- return false;
- }
-
- function setSelectionPos(pos, e) {
- var offset = $(overlay).offset();
- if (options.selection.mode == "y") {
- if (pos == selection.first)
- pos.x = 0;
- else
- pos.x = plotWidth;
- }
- else {
- pos.x = e.pageX - offset.left - plotOffset.left;
- pos.x = Math.min(Math.max(0, pos.x), plotWidth);
- }
-
- if (options.selection.mode == "x") {
- if (pos == selection.first)
- pos.y = 0;
- else
- pos.y = plotHeight;
- }
- else {
- pos.y = e.pageY - offset.top - plotOffset.top;
- pos.y = Math.min(Math.max(0, pos.y), plotHeight);
- }
- }
-
- function updateSelectionOnMouseMove() {
- if (lastMousePos.pageX == null)
- return;
-
- setSelectionPos(selection.second, lastMousePos);
- clearSelection();
- if (selectionIsSane())
- drawSelection();
- }
-
- function clearSelection() {
- if (prevSelection == null)
- return;
-
- var x = Math.min(prevSelection.first.x, prevSelection.second.x),
- y = Math.min(prevSelection.first.y, prevSelection.second.y),
- w = Math.abs(prevSelection.second.x - prevSelection.first.x),
- h = Math.abs(prevSelection.second.y - prevSelection.first.y);
-
- octx.clearRect(x + plotOffset.left - octx.lineWidth,
- y + plotOffset.top - octx.lineWidth,
- w + octx.lineWidth*2,
- h + octx.lineWidth*2);
-
- prevSelection = null;
- }
-
- function setSelection(area) {
- clearSelection();
-
- if (options.selection.mode == "x") {
- selection.first.y = 0;
- selection.second.y = plotHeight;
- }
- else {
- selection.first.y = (yaxis.max - area.y1) * vertScale;
- selection.second.y = (yaxis.max - area.y2) * vertScale;
- }
- if (options.selection.mode == "y") {
- selection.first.x = 0;
- selection.second.x = plotWidth;
- }
- else {
- selection.first.x = (area.x1 - xaxis.min) * hozScale;
- selection.second.x = (area.x2 - xaxis.min) * hozScale;
- }
-
- drawSelection();
- triggerSelectedEvent();
- }
-
- function drawSelection() {
- if (prevSelection != null &&
- selection.first.x == prevSelection.first.x &&
- selection.first.y == prevSelection.first.y &&
- selection.second.x == prevSelection.second.x &&
- selection.second.y == prevSelection.second.y)
- return;
-
- octx.strokeStyle = parseColor(options.selection.color).scale(null, null, null, 0.8).toString();
- octx.lineWidth = 1;
- ctx.lineJoin = "round";
- octx.fillStyle = parseColor(options.selection.color).scale(null, null, null, 0.4).toString();
-
- prevSelection = { first: { x: selection.first.x,
- y: selection.first.y },
- second: { x: selection.second.x,
- y: selection.second.y } };
-
- var x = Math.min(selection.first.x, selection.second.x),
- y = Math.min(selection.first.y, selection.second.y),
- w = Math.abs(selection.second.x - selection.first.x),
- h = Math.abs(selection.second.y - selection.first.y);
-
- octx.fillRect(x + plotOffset.left, y + plotOffset.top, w, h);
- octx.strokeRect(x + plotOffset.left, y + plotOffset.top, w, h);
- }
-
- function selectionIsSane() {
- var minSize = 5;
- return Math.abs(selection.second.x - selection.first.x) >= minSize &&
- Math.abs(selection.second.y - selection.first.y) >= minSize;
- }
- }
-
- $.plot = function(target, data, options) {
- var plot = new Plot(target, data, options);
- /*var t0 = new Date();
- var t1 = new Date();
- var tstr = "time used (msecs): " + (t1.getTime() - t0.getTime())
- if (window.console)
- console.log(tstr);
- else
- alert(tstr);*/
- return plot;
- };
-
- // round to nearby lower multiple of base
- function floorInBase(n, base) {
- return base * Math.floor(n / base);
- }
-
- // color helpers, inspiration from the jquery color animation
- // plugin by John Resig
- function Color (r, g, b, a) {
-
- var rgba = ['r','g','b','a'];
- var x = 4; //rgba.length
-
- while (-1<--x) {
- this[rgba[x]] = arguments[x] || ((x==3) ? 1.0 : 0);
- }
-
- this.toString = function() {
- if (this.a >= 1.0) {
- return "rgb("+[this.r,this.g,this.b].join(",")+")";
- } else {
- return "rgba("+[this.r,this.g,this.b,this.a].join(",")+")";
- }
- };
-
- this.scale = function(rf, gf, bf, af) {
- x = 4; //rgba.length
- while (-1<--x) {
- if (arguments[x] != null)
- this[rgba[x]] *= arguments[x];
- }
- return this.normalize();
- };
-
- this.adjust = function(rd, gd, bd, ad) {
- x = 4; //rgba.length
- while (-1<--x) {
- if (arguments[x] != null)
- this[rgba[x]] += arguments[x];
- }
- return this.normalize();
- };
-
- this.clone = function() {
- return new Color(this.r, this.b, this.g, this.a);
- };
-
- var limit = function(val,minVal,maxVal) {
- return Math.max(Math.min(val, maxVal), minVal);
- };
-
- this.normalize = function() {
- this.r = limit(parseInt(this.r), 0, 255);
- this.g = limit(parseInt(this.g), 0, 255);
- this.b = limit(parseInt(this.b), 0, 255);
- this.a = limit(this.a, 0, 1);
- return this;
- };
-
- this.normalize();
- }
-
- var lookupColors = {
- 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]
- };
-
- function extractColor(element) {
- var color, elem = element;
- do {
- color = elem.css("background-color").toLowerCase();
- // keep going until we find an element that has color, or
- // we hit the body
- if (color != '' && color != 'transparent')
- break;
- elem = elem.parent();
- } while (!$.nodeName(elem.get(0), "body"));
-
- // catch Safari's way of signalling transparent
- if (color == "rgba(0, 0, 0, 0)")
- return "transparent";
-
- return color;
- }
-
- // parse string, returns Color
- function parseColor(str) {
- var result;
-
- // Look for rgb(num,num,num)
- if (result = /rgb\(\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*,\s*([0-9]{1,3})\s*\)/.exec(str))
- return new Color(parseInt(result[1], 10), parseInt(result[2], 10), parseInt(result[3], 10));
-
- // Look for rgba(num,num,num,num)
- if (result = /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(str))
- return new Color(parseInt(result[1], 10), parseInt(result[2], 10), parseInt(result[3], 10), parseFloat(result[4]));
-
- // Look for rgb(num%,num%,num%)
- if (result = /rgb\(\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*,\s*([0-9]+(?:\.[0-9]+)?)\%\s*\)/.exec(str))
- return new Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55);
-
- // Look for rgba(num%,num%,num%,num)
- if (result = /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(str))
- return new Color(parseFloat(result[1])*2.55, parseFloat(result[2])*2.55, parseFloat(result[3])*2.55, parseFloat(result[4]));
-
- // Look for #a0b1c2
- if (result = /#([a-fA-F0-9]{2})([a-fA-F0-9]{2})([a-fA-F0-9]{2})/.exec(str))
- return new Color(parseInt(result[1], 16), parseInt(result[2], 16), parseInt(result[3], 16));
-
- // Look for #fff
- if (result = /#([a-fA-F0-9])([a-fA-F0-9])([a-fA-F0-9])/.exec(str))
- return new Color(parseInt(result[1]+result[1], 16), parseInt(result[2]+result[2], 16), parseInt(result[3]+result[3], 16));
-
- // Otherwise, we're most likely dealing with a named color
- var name = $.trim(str).toLowerCase();
- if (name == "transparent")
- return new Color(255, 255, 255, 0);
- else {
- result = lookupColors[name];
- return new Color(result[0], result[1], result[2]);
- }
- }
-
-})(jQuery);
BGBM BDI Projects / geo.git / blobdiff