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Diffstat (limited to 'tipboard/static/js/lib/jqplot/plugins/jqplot.meterGaugeRenderer.js')
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diff --git a/tipboard/static/js/lib/jqplot/plugins/jqplot.meterGaugeRenderer.js b/tipboard/static/js/lib/jqplot/plugins/jqplot.meterGaugeRenderer.js new file mode 100644 index 0000000..8bd899d --- /dev/null +++ b/tipboard/static/js/lib/jqplot/plugins/jqplot.meterGaugeRenderer.js @@ -0,0 +1,1029 @@ +/** + * jqPlot + * Pure JavaScript plotting plugin using jQuery + * + * Version: 1.0.8 + * Revision: 1250 + * + * Copyright (c) 2009-2013 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.MeterGaugeRenderer + * Plugin renderer to draw a meter gauge chart. + * + * Data consists of a single series with 1 data point to position the gauge needle. + * + * To use this renderer, you need to include the + * meter gauge renderer plugin, for example: + * + * > <script type="text/javascript" src="plugins/jqplot.meterGaugeRenderer.js"></script> + * + * Properties described here are passed into the $.jqplot function + * as options on the series renderer. For example: + * + * > plot0 = $.jqplot('chart0',[[18]],{ + * > title: 'Network Speed', + * > seriesDefaults: { + * > renderer: $.jqplot.MeterGaugeRenderer, + * > rendererOptions: { + * > label: 'MB/s' + * > } + * > } + * > }); + * + * A meterGauge plot does not support events. + */ + $.jqplot.MeterGaugeRenderer = function(){ + $.jqplot.LineRenderer.call(this); + }; + + $.jqplot.MeterGaugeRenderer.prototype = new $.jqplot.LineRenderer(); + $.jqplot.MeterGaugeRenderer.prototype.constructor = $.jqplot.MeterGaugeRenderer; + + // called with scope of a series + $.jqplot.MeterGaugeRenderer.prototype.init = function(options) { + // Group: Properties + // + // prop: diameter + // Outer diameter of the meterGauge, auto computed by default + this.diameter = null; + // prop: padding + // padding between the meterGauge and plot edges, auto + // calculated by default. + this.padding = null; + // prop: shadowOffset + // offset of the shadow from the gauge ring and offset of + // each succesive stroke of the shadow from the last. + this.shadowOffset = 2; + // prop: shadowAlpha + // transparency of the shadow (0 = transparent, 1 = opaque) + this.shadowAlpha = 0.07; + // prop: shadowDepth + // number of strokes to apply to the shadow, + // each stroke offset shadowOffset from the last. + this.shadowDepth = 4; + // prop: background + // background color of the inside of the gauge. + this.background = "#efefef"; + // prop: ringColor + // color of the outer ring, hub, and needle of the gauge. + this.ringColor = "#BBC6D0"; + // needle color not implemented yet. + this.needleColor = "#C3D3E5"; + // prop: tickColor + // color of the tick marks around the gauge. + this.tickColor = "#989898"; + // prop: ringWidth + // width of the ring around the gauge. Auto computed by default. + this.ringWidth = null; + // prop: min + // Minimum value on the gauge. Auto computed by default + this.min; + // prop: max + // Maximum value on the gauge. Auto computed by default + this.max; + // prop: ticks + // Array of tick values. Auto computed by default. + this.ticks = []; + // prop: showTicks + // true to show ticks around gauge. + this.showTicks = true; + // prop: showTickLabels + // true to show tick labels next to ticks. + this.showTickLabels = true; + // prop: label + // A gauge label like 'kph' or 'Volts' + this.label = null; + // prop: labelHeightAdjust + // Number of Pixels to offset the label up (-) or down (+) from its default position. + this.labelHeightAdjust = 0; + // prop: labelPosition + // Where to position the label, either 'inside' or 'bottom'. + this.labelPosition = 'inside'; + // prop: intervals + // Array of ranges to be drawn around the gauge. + // Array of form: + // > [value1, value2, ...] + // indicating the values for the first, second, ... intervals. + this.intervals = []; + // prop: intervalColors + // Array of colors to use for the intervals. + this.intervalColors = [ "#4bb2c5", "#EAA228", "#c5b47f", "#579575", "#839557", "#958c12", "#953579", "#4b5de4", "#d8b83f", "#ff5800", "#0085cc", "#c747a3", "#cddf54", "#FBD178", "#26B4E3", "#bd70c7"]; + // prop: intervalInnerRadius + // Radius of the inner circle of the interval ring. + this.intervalInnerRadius = null; + // prop: intervalOuterRadius + // Radius of the outer circle of the interval ring. + this.intervalOuterRadius = null; + this.tickRenderer = $.jqplot.MeterGaugeTickRenderer; + // ticks spaced every 1, 2, 2.5, 5, 10, 20, .1, .2, .25, .5, etc. + this.tickPositions = [1, 2, 2.5, 5, 10]; + // prop: tickSpacing + // Degrees between ticks. This is a target number, if + // incompatible span and ticks are supplied, a suitable + // spacing close to this value will be computed. + this.tickSpacing = 30; + this.numberMinorTicks = null; + // prop: hubRadius + // Radius of the hub at the bottom center of gauge which the needle attaches to. + // Auto computed by default + this.hubRadius = null; + // prop: tickPadding + // padding of the tick marks to the outer ring and the tick labels to marks. + // Auto computed by default. + this.tickPadding = null; + // prop: needleThickness + // Maximum thickness the needle. Auto computed by default. + this.needleThickness = null; + // prop: needlePad + // Padding between needle and inner edge of the ring when the needle is at the min or max gauge value. + this.needlePad = 6; + // prop: pegNeedle + // True will stop needle just below/above the min/max values if data is below/above min/max, + // as if the meter is "pegged". + this.pegNeedle = true; + this._type = 'meterGauge'; + + $.extend(true, this, options); + this.type = null; + this.numberTicks = null; + this.tickInterval = null; + // span, the sweep (in degrees) from min to max. This gauge is + // a semi-circle. + this.span = 180; + // get rid of this nonsense + // this.innerSpan = this.span; + if (this.type == 'circular') { + this.semiCircular = false; + } + else if (this.type != 'circular') { + this.semiCircular = true; + } + else { + this.semiCircular = (this.span <= 180) ? true : false; + } + this._tickPoints = []; + // reference to label element. + this._labelElem = null; + + // start the gauge at the beginning of the span + this.startAngle = (90 + (360 - this.span)/2) * Math.PI/180; + this.endAngle = (90 - (360 - this.span)/2) * Math.PI/180; + + this.setmin = !!(this.min == null); + this.setmax = !!(this.max == null); + + // if given intervals and is an array of values, create labels and colors. + if (this.intervals.length) { + if (this.intervals[0].length == null || this.intervals.length == 1) { + for (var i=0; i<this.intervals.length; i++) { + this.intervals[i] = [this.intervals[i], this.intervals[i], this.intervalColors[i]]; + } + } + else if (this.intervals[0].length == 2) { + for (i=0; i<this.intervals.length; i++) { + this.intervals[i] = [this.intervals[i][0], this.intervals[i][1], this.intervalColors[i]]; + } + } + } + + // compute min, max and ticks if not supplied: + if (this.ticks.length) { + if (this.ticks[0].length == null || this.ticks[0].length == 1) { + for (var i=0; i<this.ticks.length; i++) { + this.ticks[i] = [this.ticks[i], this.ticks[i]]; + } + } + this.min = (this.min == null) ? this.ticks[0][0] : this.min; + this.max = (this.max == null) ? this.ticks[this.ticks.length-1][0] : this.max; + this.setmin = false; + this.setmax = false; + this.numberTicks = this.ticks.length; + this.tickInterval = this.ticks[1][0] - this.ticks[0][0]; + this.tickFactor = Math.floor(parseFloat((Math.log(this.tickInterval)/Math.log(10)).toFixed(11))); + // use the first interal to calculate minor ticks; + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); + if (!this.numberMinorTicks) { + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); + } + if (!this.numberMinorTicks) { + this.numberMinorTicks = 1; + } + } + + else if (this.intervals.length) { + this.min = (this.min == null) ? 0 : this.min; + this.setmin = false; + if (this.max == null) { + if (this.intervals[this.intervals.length-1][0] >= this.data[0][1]) { + this.max = this.intervals[this.intervals.length-1][0]; + this.setmax = false; + } + } + else { + this.setmax = false; + } + } + + else { + // no ticks and no intervals supplied, put needle in middle + this.min = (this.min == null) ? 0 : this.min; + this.setmin = false; + if (this.max == null) { + this.max = this.data[0][1] * 1.25; + this.setmax = true; + } + else { + this.setmax = false; + } + } + }; + + $.jqplot.MeterGaugeRenderer.prototype.setGridData = function(plot) { + // set gridData property. This will hold angle in radians of each data point. + var stack = []; + var td = []; + var sa = this.startAngle; + for (var i=0; i<this.data.length; i++){ + stack.push(this.data[i][1]); + td.push([this.data[i][0]]); + if (i>0) { + stack[i] += stack[i-1]; + } + } + var fact = Math.PI*2/stack[stack.length - 1]; + + for (var i=0; i<stack.length; i++) { + td[i][1] = stack[i] * fact; + } + this.gridData = td; + }; + + $.jqplot.MeterGaugeRenderer.prototype.makeGridData = function(data, plot) { + var stack = []; + var td = []; + var sa = this.startAngle; + for (var i=0; i<data.length; i++){ + stack.push(data[i][1]); + td.push([data[i][0]]); + if (i>0) { + stack[i] += stack[i-1]; + } + } + var fact = Math.PI*2/stack[stack.length - 1]; + + for (var i=0; i<stack.length; i++) { + td[i][1] = stack[i] * fact; + } + return td; + }; + + + function getnmt(pos, interval, fact) { + var temp; + for (var i=pos.length-1; i>=0; i--) { + temp = interval/(pos[i] * Math.pow(10, fact)); + if (temp == 4 || temp == 5) { + return temp - 1; + } + } + return null; + } + + // called with scope of series + $.jqplot.MeterGaugeRenderer.prototype.draw = function (ctx, gd, options) { + var i; + var opts = (options != undefined) ? options : {}; + // offset and direction of offset due to legend placement + var offx = 0; + var offy = 0; + var trans = 1; + if (options.legendInfo && options.legendInfo.placement == 'inside') { + var li = options.legendInfo; + switch (li.location) { + case 'nw': + offx = li.width + li.xoffset; + break; + case 'w': + offx = li.width + li.xoffset; + break; + case 'sw': + offx = li.width + li.xoffset; + break; + case 'ne': + offx = li.width + li.xoffset; + trans = -1; + break; + case 'e': + offx = li.width + li.xoffset; + trans = -1; + break; + case 'se': + offx = li.width + li.xoffset; + trans = -1; + break; + case 'n': + offy = li.height + li.yoffset; + break; + case 's': + offy = li.height + li.yoffset; + trans = -1; + break; + default: + break; + } + } + + + + // pre-draw so can get its dimensions. + if (this.label) { + this._labelElem = $('<div class="jqplot-meterGauge-label" style="position:absolute;">'+this.label+'</div>'); + this.canvas._elem.after(this._labelElem); + } + + var shadow = (opts.shadow != undefined) ? opts.shadow : this.shadow; + var showLine = (opts.showLine != undefined) ? opts.showLine : this.showLine; + var fill = (opts.fill != undefined) ? opts.fill : this.fill; + var cw = ctx.canvas.width; + var ch = ctx.canvas.height; + if (this.padding == null) { + this.padding = Math.round(Math.min(cw, ch)/30); + } + var w = cw - offx - 2 * this.padding; + var h = ch - offy - 2 * this.padding; + if (this.labelPosition == 'bottom' && this.label) { + h -= this._labelElem.outerHeight(true); + } + var mindim = Math.min(w,h); + var d = mindim; + + if (!this.diameter) { + if (this.semiCircular) { + if ( w >= 2*h) { + if (!this.ringWidth) { + this.ringWidth = 2*h/35; + } + this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); + this.innerPad = this.ringWidth/2 + this.needleThickness/2 + this.needlePad; + this.diameter = 2 * (h - 2*this.innerPad); + } + else { + if (!this.ringWidth) { + this.ringWidth = w/35; + } + this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); + this.innerPad = this.ringWidth/2 + this.needleThickness/2 + this.needlePad; + this.diameter = w - 2*this.innerPad - this.ringWidth - this.padding; + } + // center taking into account legend and over draw for gauge bottom below hub. + // this will be center of hub. + this._center = [(cw - trans * offx)/2 + trans * offx, (ch + trans*offy - this.padding - this.ringWidth - this.innerPad)]; + } + else { + if (!this.ringWidth) { + this.ringWidth = d/35; + } + this.needleThickness = this.needleThickness || 2+Math.pow(this.ringWidth, 0.8); + this.innerPad = 0; + this.diameter = d - this.ringWidth; + // center in middle of canvas taking into account legend. + // will be center of hub. + this._center = [(cw-trans*offx)/2 + trans * offx, (ch-trans*offy)/2 + trans * offy]; + } + if (this._labelElem && this.labelPosition == 'bottom') { + this._center[1] -= this._labelElem.outerHeight(true); + } + + } + + this._radius = this.diameter/2; + + this.tickSpacing = 6000/this.diameter; + + if (!this.hubRadius) { + this.hubRadius = this.diameter/18; + } + + this.shadowOffset = 0.5 + this.ringWidth/9; + this.shadowWidth = this.ringWidth*1; + + this.tickPadding = 3 + Math.pow(this.diameter/20, 0.7); + this.tickOuterRadius = this._radius - this.ringWidth/2 - this.tickPadding; + this.tickLength = (this.showTicks) ? this._radius/13 : 0; + + if (this.ticks.length == 0) { + // no ticks, lets make some. + var max = this.max, + min = this.min, + setmax = this.setmax, + setmin = this.setmin, + ti = (max - min) * this.tickSpacing / this.span; + var tf = Math.floor(parseFloat((Math.log(ti)/Math.log(10)).toFixed(11))); + var tp = (ti/Math.pow(10, tf)); + (tp > 2 && tp <= 2.5) ? tp = 2.5 : tp = Math.ceil(tp); + var t = this.tickPositions; + var tpindex, nt; + + for (i=0; i<t.length; i++) { + if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) { + ti = t[i]*Math.pow(10, tf); + tpindex = i; + } + } + + for (i=0; i<t.length; i++) { + if (tp == t[i] || i && t[i-1] < tp && tp < t[i]) { + ti = t[i]*Math.pow(10, tf); + nt = Math.ceil((max - min) / ti); + } + } + + // both max and min are free + if (setmax && setmin) { + var tmin = (min > 0) ? min - min % ti : min - min % ti - ti; + if (!this.forceZero) { + var diff = Math.min(min - tmin, 0.8*ti); + var ntp = Math.floor(diff/t[tpindex]); + if (ntp > 1) { + tmin = tmin + t[tpindex] * (ntp-1); + if (parseInt(tmin, 10) != tmin && parseInt(tmin-t[tpindex], 10) == tmin-t[tpindex]) { + tmin = tmin - t[tpindex]; + } + } + } + if (min == tmin) { + min -= ti; + } + else { + // tmin should always be lower than dataMin + if (min - tmin > 0.23*ti) { + min = tmin; + } + else { + min = tmin -ti; + nt += 1; + } + } + nt += 1; + var tmax = min + (nt - 1) * ti; + if (max >= tmax) { + tmax += ti; + nt += 1; + } + // now tmax should always be mroe than dataMax + if (tmax - max < 0.23*ti) { + tmax += ti; + nt += 1; + } + this.max = max = tmax; + this.min = min; + + this.tickInterval = ti; + this.numberTicks = nt; + var it; + for (i=0; i<nt; i++) { + it = parseFloat((min+i*ti).toFixed(11)); + this.ticks.push([it, it]); + } + this.max = this.ticks[nt-1][1]; + + this.tickFactor = tf; + // determine number of minor ticks + + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); + + if (!this.numberMinorTicks) { + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); + } + } + // max is free, min is fixed + else if (setmax) { + var tmax = min + (nt - 1) * ti; + if (max >= tmax) { + max = tmax + ti; + nt += 1; + } + else { + max = tmax; + } + + this.tickInterval = this.tickInterval || ti; + this.numberTicks = this.numberTicks || nt; + var it; + for (i=0; i<this.numberTicks; i++) { + it = parseFloat((min+i*this.tickInterval).toFixed(11)); + this.ticks.push([it, it]); + } + this.max = this.ticks[this.numberTicks-1][1]; + + this.tickFactor = tf; + // determine number of minor ticks + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); + + if (!this.numberMinorTicks) { + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); + } + } + + // not setting max or min + if (!setmax && !setmin) { + var range = this.max - this.min; + tf = Math.floor(parseFloat((Math.log(range)/Math.log(10)).toFixed(11))) - 1; + var nticks = [5,6,4,7,3,8,9,10,2], res, numticks, nonSigDigits=0, sigRange; + // check to see how many zeros are at the end of the range + if (range > 1) { + var rstr = String(range); + if (rstr.search(/\./) == -1) { + var pos = rstr.search(/0+$/); + nonSigDigits = (pos > 0) ? rstr.length - pos - 1 : 0; + } + } + sigRange = range/Math.pow(10, nonSigDigits); + for (i=0; i<nticks.length; i++) { + res = sigRange/(nticks[i]-1); + if (res == parseInt(res, 10)) { + this.numberTicks = nticks[i]; + this.tickInterval = range/(this.numberTicks-1); + this.tickFactor = tf+1; + break; + } + } + var it; + for (i=0; i<this.numberTicks; i++) { + it = parseFloat((this.min+i*this.tickInterval).toFixed(11)); + this.ticks.push([it, it]); + } + // determine number of minor ticks + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor); + + if (!this.numberMinorTicks) { + this.numberMinorTicks = getnmt(this.tickPositions, this.tickInterval, this.tickFactor-1); + } + + if (!this.numberMinorTicks) { + this.numberMinorTicks = 1; + var nums = [4, 5, 3, 6, 2]; + for (i=0; i<5; i++) { + var temp = this.tickInterval/nums[i]; + if (temp == parseInt(temp, 10)) { + this.numberMinorTicks = nums[i]-1; + break; + } + } + } + } + } + + + var r = this._radius, + sa = this.startAngle, + ea = this.endAngle, + pi = Math.PI, + hpi = Math.PI/2; + + if (this.semiCircular) { + var overAngle = Math.atan(this.innerPad/r), + outersa = this.outerStartAngle = sa - overAngle, + outerea = this.outerEndAngle = ea + overAngle, + hubsa = this.hubStartAngle = sa - Math.atan(this.innerPad/this.hubRadius*2), + hubea = this.hubEndAngle = ea + Math.atan(this.innerPad/this.hubRadius*2); + + ctx.save(); + + ctx.translate(this._center[0], this._center[1]); + ctx.lineJoin = "round"; + ctx.lineCap = "round"; + + // draw the innerbackground + ctx.save(); + ctx.beginPath(); + ctx.fillStyle = this.background; + ctx.arc(0, 0, r, outersa, outerea, false); + ctx.closePath(); + ctx.fill(); + ctx.restore(); + + // draw the shadow + // the outer ring. + var shadowColor = 'rgba(0,0,0,'+this.shadowAlpha+')'; + ctx.save(); + for (var i=0; i<this.shadowDepth; i++) { + ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI)); + ctx.beginPath(); + ctx.strokeStyle = shadowColor; + ctx.lineWidth = this.shadowWidth; + ctx.arc(0 ,0, r, outersa, outerea, false); + ctx.closePath(); + ctx.stroke(); + } + ctx.restore(); + + // the inner hub. + ctx.save(); + var tempd = parseInt((this.shadowDepth+1)/2, 10); + for (var i=0; i<tempd; i++) { + ctx.translate(this.shadowOffset*Math.cos(this.shadowAngle/180*Math.PI), this.shadowOffset*Math.sin(this.shadowAngle/180*Math.PI)); + ctx.beginPath(); + ctx.fillStyle = shadowColor; + ctx.arc(0 ,0, this.hubRadius, hubsa, hubea, false); + ctx.closePath(); + ctx.fill(); + } + ctx.restore(); + + // draw the outer ring. + ctx.save(); + ctx.beginPath(); + ctx.strokeStyle = this.ringColor; + ctx.lineWidth = this.ringWidth; + ctx.arc(0 ,0, r, outersa, outerea, false); + ctx.closePath(); + ctx.stroke(); + ctx.restore(); + + // draw the hub + + ctx.save(); + ctx.beginPath(); + ctx.fillStyle = this.ringColor; + ctx.arc(0 ,0, this.hubRadius,hubsa, hubea, false); + ctx.closePath(); + ctx.fill(); + ctx.restore(); + + // draw the ticks + if (this.showTicks) { + ctx.save(); + var orad = this.tickOuterRadius, + tl = this.tickLength, + mtl = tl/2, + nmt = this.numberMinorTicks, + ts = this.span * Math.PI / 180 / (this.ticks.length-1), + mts = ts/(nmt + 1); + + for (i = 0; i<this.ticks.length; i++) { + ctx.beginPath(); + ctx.lineWidth = 1.5 + this.diameter/360; + ctx.strokeStyle = this.ringColor; + var wps = ts*i+sa; + ctx.moveTo(-orad * Math.cos(ts*i+sa), orad * Math.sin(ts*i+sa)); + ctx.lineTo(-(orad-tl) * Math.cos(ts*i+sa), (orad - tl) * Math.sin(ts*i+sa)); + this._tickPoints.push([(orad-tl) * Math.cos(ts*i+sa) + this._center[0] + this.canvas._offsets.left, (orad - tl) * Math.sin(ts*i+sa) + this._center[1] + this.canvas._offsets.top, ts*i+sa]); + ctx.stroke(); + ctx.lineWidth = 1.0 + this.diameter/440; + if (i<this.ticks.length-1) { + for (var j=1; j<=nmt; j++) { + ctx.beginPath(); + ctx.moveTo(-orad * Math.cos(ts*i+mts*j+sa), orad * Math.sin(ts*i+mts*j+sa)); + ctx.lineTo(-(orad-mtl) * Math.cos(ts*i+mts*j+sa), (orad-mtl) * Math.sin(ts*i+mts*j+sa)); + ctx.stroke(); + } + } + } + ctx.restore(); + } + + // draw the tick labels + if (this.showTickLabels) { + var elem, l, t, ew, eh, dim, maxdim=0; + var tp = this.tickPadding * (1 - 1/(this.diameter/80+1)); + for (i=0; i<this.ticks.length; i++) { + elem = $('<div class="jqplot-meterGauge-tick" style="position:absolute;">'+this.ticks[i][1]+'</div>'); + this.canvas._elem.after(elem); + ew = elem.outerWidth(true); + eh = elem.outerHeight(true); + l = this._tickPoints[i][0] - ew * (this._tickPoints[i][2]-Math.PI)/Math.PI - tp * Math.cos(this._tickPoints[i][2]); + t = this._tickPoints[i][1] - eh/2 + eh/2 * Math.pow(Math.abs((Math.sin(this._tickPoints[i][2]))), 0.5) + tp/3 * Math.pow(Math.abs((Math.sin(this._tickPoints[i][2]))), 0.5) ; + // t = this._tickPoints[i][1] - eh/2 - eh/2 * Math.sin(this._tickPoints[i][2]) - tp/2 * Math.sin(this._tickPoints[i][2]); + elem.css({left:l, top:t, color: this.tickColor}); + dim = ew*Math.cos(this._tickPoints[i][2]) + eh*Math.sin(Math.PI/2+this._tickPoints[i][2]/2); + maxdim = (dim > maxdim) ? dim : maxdim; + } + } + + // draw the gauge label + if (this.label && this.labelPosition == 'inside') { + var l = this._center[0] + this.canvas._offsets.left; + var tp = this.tickPadding * (1 - 1/(this.diameter/80+1)); + var t = 0.5*(this._center[1] + this.canvas._offsets.top - this.hubRadius) + 0.5*(this._center[1] + this.canvas._offsets.top - this.tickOuterRadius + this.tickLength + tp) + this.labelHeightAdjust; + // this._labelElem = $('<div class="jqplot-meterGauge-label" style="position:absolute;">'+this.label+'</div>'); + // this.canvas._elem.after(this._labelElem); + l -= this._labelElem.outerWidth(true)/2; + t -= this._labelElem.outerHeight(true)/2; + this._labelElem.css({left:l, top:t}); + } + + else if (this.label && this.labelPosition == 'bottom') { + var l = this._center[0] + this.canvas._offsets.left - this._labelElem.outerWidth(true)/2; + var t = this._center[1] + this.canvas._offsets.top + this.innerPad + this.ringWidth + this.padding + this.labelHeightAdjust; + this._labelElem.css({left:l, top:t}); + + } + + // draw the intervals + + ctx.save(); + var inner = this.intervalInnerRadius || this.hubRadius * 1.5; + if (this.intervalOuterRadius == null) { + if (this.showTickLabels) { + var outer = (this.tickOuterRadius - this.tickLength - this.tickPadding - this.diameter/8); + } + else { + var outer = (this.tickOuterRadius - this.tickLength - this.diameter/16); + } + } + else { + var outer = this.intervalOuterRadius; + } + var range = this.max - this.min; + var intrange = this.intervals[this.intervals.length-1] - this.min; + var start, end, span = this.span*Math.PI/180; + for (i=0; i<this.intervals.length; i++) { + start = (i == 0) ? sa : sa + (this.intervals[i-1][0] - this.min)*span/range; + if (start < 0) { + start = 0; + } + end = sa + (this.intervals[i][0] - this.min)*span/range; + if (end < 0) { + end = 0; + } + ctx.beginPath(); + ctx.fillStyle = this.intervals[i][2]; + ctx.arc(0, 0, inner, start, end, false); + ctx.lineTo(outer*Math.cos(end), outer*Math.sin(end)); + ctx.arc(0, 0, outer, end, start, true); + ctx.lineTo(inner*Math.cos(start), inner*Math.sin(start)); + ctx.closePath(); + ctx.fill(); + } + ctx.restore(); + + // draw the needle + var datapoint = this.data[0][1]; + var dataspan = this.max - this.min; + if (this.pegNeedle) { + if (this.data[0][1] > this.max + dataspan*3/this.span) { + datapoint = this.max + dataspan*3/this.span; + } + if (this.data[0][1] < this.min - dataspan*3/this.span) { + datapoint = this.min - dataspan*3/this.span; + } + } + var dataang = (datapoint - this.min)/dataspan * this.span * Math.PI/180 + this.startAngle; + + + ctx.save(); + ctx.beginPath(); + ctx.fillStyle = this.ringColor; + ctx.strokeStyle = this.ringColor; + this.needleLength = (this.tickOuterRadius - this.tickLength) * 0.85; + this.needleThickness = (this.needleThickness < 2) ? 2 : this.needleThickness; + var endwidth = this.needleThickness * 0.4; + + + var dl = this.needleLength/10; + var dt = (this.needleThickness - endwidth)/10; + var templ; + for (var i=0; i<10; i++) { + templ = this.needleThickness - i*dt; + ctx.moveTo(dl*i*Math.cos(dataang), dl*i*Math.sin(dataang)); + ctx.lineWidth = templ; + ctx.lineTo(dl*(i+1)*Math.cos(dataang), dl*(i+1)*Math.sin(dataang)); + ctx.stroke(); + } + + ctx.restore(); + } + else { + this._center = [(cw - trans * offx)/2 + trans * offx, (ch - trans*offy)/2 + trans * offy]; + } + }; + + $.jqplot.MeterGaugeAxisRenderer = function() { + $.jqplot.LinearAxisRenderer.call(this); + }; + + $.jqplot.MeterGaugeAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer(); + $.jqplot.MeterGaugeAxisRenderer.prototype.constructor = $.jqplot.MeterGaugeAxisRenderer; + + + // There are no traditional axes on a gauge chart. We just need to provide + // dummy objects with properties so the plot will render. + // called with scope of axis object. + $.jqplot.MeterGaugeAxisRenderer.prototype.init = function(options){ + // + this.tickRenderer = $.jqplot.MeterGaugeTickRenderer; + $.extend(true, this, options); + // I don't think I'm going to need _dataBounds here. + // have to go Axis scaling in a way to fit chart onto plot area + // and provide u2p and p2u functionality for mouse cursor, etc. + // for convienence set _dataBounds to 0 and 100 and + // set min/max to 0 and 100. + this._dataBounds = {min:0, max:100}; + this.min = 0; + this.max = 100; + this.showTicks = false; + this.ticks = []; + this.showMark = false; + this.show = false; + }; + + $.jqplot.MeterGaugeLegendRenderer = function(){ + $.jqplot.TableLegendRenderer.call(this); + }; + + $.jqplot.MeterGaugeLegendRenderer.prototype = new $.jqplot.TableLegendRenderer(); + $.jqplot.MeterGaugeLegendRenderer.prototype.constructor = $.jqplot.MeterGaugeLegendRenderer; + + /** + * Class: $.jqplot.MeterGaugeLegendRenderer + *Meter gauges don't typically have a legend, this overrides the default legend renderer. + */ + $.jqplot.MeterGaugeLegendRenderer.prototype.init = function(options) { + // Maximum number of rows in the legend. 0 or null for unlimited. + this.numberRows = null; + // Maximum number of columns in the legend. 0 or null for unlimited. + this.numberColumns = null; + $.extend(true, this, options); + }; + + // called with context of legend + $.jqplot.MeterGaugeLegendRenderer.prototype.draw = function() { + if (this.show) { + var series = this._series; + var ss = 'position:absolute;'; + ss += (this.background) ? 'background:'+this.background+';' : ''; + ss += (this.border) ? 'border:'+this.border+';' : ''; + ss += (this.fontSize) ? 'font-size:'+this.fontSize+';' : ''; + ss += (this.fontFamily) ? 'font-family:'+this.fontFamily+';' : ''; + ss += (this.textColor) ? 'color:'+this.textColor+';' : ''; + ss += (this.marginTop != null) ? 'margin-top:'+this.marginTop+';' : ''; + ss += (this.marginBottom != null) ? 'margin-bottom:'+this.marginBottom+';' : ''; + ss += (this.marginLeft != null) ? 'margin-left:'+this.marginLeft+';' : ''; + ss += (this.marginRight != null) ? 'margin-right:'+this.marginRight+';' : ''; + this._elem = $('<table class="jqplot-table-legend" style="'+ss+'"></table>'); + // MeterGauge charts legends don't go by number of series, but by number of data points + // in the series. Refactor things here for that. + + var pad = false, + reverse = false, + nr, nc; + var s = series[0]; + + if (s.show) { + var pd = s.data; + if (this.numberRows) { + nr = this.numberRows; + if (!this.numberColumns){ + nc = Math.ceil(pd.length/nr); + } + else{ + nc = this.numberColumns; + } + } + else if (this.numberColumns) { + nc = this.numberColumns; + nr = Math.ceil(pd.length/this.numberColumns); + } + else { + nr = pd.length; + nc = 1; + } + + var i, j, tr, td1, td2, lt, rs, color; + var idx = 0; + + for (i=0; i<nr; i++) { + if (reverse){ + tr = $('<tr class="jqplot-table-legend"></tr>').prependTo(this._elem); + } + else{ + tr = $('<tr class="jqplot-table-legend"></tr>').appendTo(this._elem); + } + for (j=0; j<nc; j++) { + if (idx < pd.length){ + // debugger + lt = this.labels[idx] || pd[idx][0].toString(); + color = s.color; + if (!reverse){ + if (i>0){ + pad = true; + } + else{ + pad = false; + } + } + else{ + if (i == nr -1){ + pad = false; + } + else{ + pad = true; + } + } + rs = (pad) ? this.rowSpacing : '0'; + + td1 = $('<td class="jqplot-table-legend" style="text-align:center;padding-top:'+rs+';">'+ + '<div><div class="jqplot-table-legend-swatch" style="border-color:'+color+';"></div>'+ + '</div></td>'); + td2 = $('<td class="jqplot-table-legend" style="padding-top:'+rs+';"></td>'); + if (this.escapeHtml){ + td2.text(lt); + } + else { + td2.html(lt); + } + if (reverse) { + td2.prependTo(tr); + td1.prependTo(tr); + } + else { + td1.appendTo(tr); + td2.appendTo(tr); + } + pad = true; + } + idx++; + } + } + } + } + return this._elem; + }; + + + // setup default renderers for axes and legend so user doesn't have to + // called with scope of plot + function preInit(target, data, options) { + // debugger + options = options || {}; + options.axesDefaults = options.axesDefaults || {}; + options.legend = options.legend || {}; + options.seriesDefaults = options.seriesDefaults || {}; + options.grid = options.grid || {}; + + // only set these if there is a gauge series + var setopts = false; + if (options.seriesDefaults.renderer == $.jqplot.MeterGaugeRenderer) { + setopts = true; + } + else if (options.series) { + for (var i=0; i < options.series.length; i++) { + if (options.series[i].renderer == $.jqplot.MeterGaugeRenderer) { + setopts = true; + } + } + } + + if (setopts) { + options.axesDefaults.renderer = $.jqplot.MeterGaugeAxisRenderer; + options.legend.renderer = $.jqplot.MeterGaugeLegendRenderer; + options.legend.preDraw = true; + options.grid.background = options.grid.background || 'white'; + options.grid.drawGridlines = false; + options.grid.borderWidth = (options.grid.borderWidth != null) ? options.grid.borderWidth : 0; + options.grid.shadow = (options.grid.shadow != null) ? options.grid.shadow : false; + } + } + + // called with scope of plot + function postParseOptions(options) { + // + } + + $.jqplot.preInitHooks.push(preInit); + $.jqplot.postParseOptionsHooks.push(postParseOptions); + + $.jqplot.MeterGaugeTickRenderer = function() { + $.jqplot.AxisTickRenderer.call(this); + }; + + $.jqplot.MeterGaugeTickRenderer.prototype = new $.jqplot.AxisTickRenderer(); + $.jqplot.MeterGaugeTickRenderer.prototype.constructor = $.jqplot.MeterGaugeTickRenderer; + +})(jQuery); + + |