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+//>>built
+define("dojox/charting/axis2d/Invisible", ["dojo/_base/lang", "dojo/_base/declare", "./Base", "../scaler/linear",
+ "dojox/gfx", "dojox/lang/utils", "dojox/lang/functional", "dojo/string"],
+ function(lang, declare, Base, lin, g, du, df, dstring){
+/*=====
+var Base = dojox.charting.axis2d.Base;
+=====*/
+ var merge = du.merge,
+ labelGap = 4, // in pixels
+ centerAnchorLimit = 45; // in degrees
+
+ return declare("dojox.charting.axis2d.Invisible", Base, {
+ // summary:
+ // The default axis object used in dojox.charting. See dojox.charting.Chart.addAxis for details.
+ //
+ // defaultParams: Object
+ // The default parameters used to define any axis.
+ // optionalParams: Object
+ // Any optional parameters needed to define an axis.
+
+ /*
+ // TODO: the documentation tools need these to be pre-defined in order to pick them up
+ // correctly, but the code here is partially predicated on whether or not the properties
+ // actually exist. For now, we will leave these undocumented but in the code for later. -- TRT
+
+ // opt: Object
+ // The actual options used to define this axis, created at initialization.
+ // scalar: Object
+ // The calculated helper object to tell charts how to draw an axis and any data.
+ // ticks: Object
+ // The calculated tick object that helps a chart draw the scaling on an axis.
+ // dirty: Boolean
+ // The state of the axis (whether it needs to be redrawn or not)
+ // scale: Number
+ // The current scale of the axis.
+ // offset: Number
+ // The current offset of the axis.
+
+ opt: null,
+ scalar: null,
+ ticks: null,
+ dirty: true,
+ scale: 1,
+ offset: 0,
+ */
+ defaultParams: {
+ vertical: false, // true for vertical axis
+ fixUpper: "none", // align the upper on ticks: "major", "minor", "micro", "none"
+ fixLower: "none", // align the lower on ticks: "major", "minor", "micro", "none"
+ natural: false, // all tick marks should be made on natural numbers
+ leftBottom: true, // position of the axis, used with "vertical"
+ includeZero: false, // 0 should be included
+ fixed: true, // all labels are fixed numbers
+ majorLabels: true, // draw major labels
+ minorTicks: true, // draw minor ticks
+ minorLabels: true, // draw minor labels
+ microTicks: false, // draw micro ticks
+ rotation: 0 // label rotation angle in degrees
+ },
+ optionalParams: {
+ min: 0, // minimal value on this axis
+ max: 1, // maximal value on this axis
+ from: 0, // visible from this value
+ to: 1, // visible to this value
+ majorTickStep: 4, // major tick step
+ minorTickStep: 2, // minor tick step
+ microTickStep: 1, // micro tick step
+ labels: [], // array of labels for major ticks
+ // with corresponding numeric values
+ // ordered by values
+ labelFunc: null, // function to compute label values
+ maxLabelSize: 0, // size in px. For use with labelFunc
+ maxLabelCharCount: 0, // size in word count.
+ trailingSymbol: null
+
+ // TODO: add support for minRange!
+ // minRange: 1, // smallest distance from min allowed on the axis
+ },
+
+ constructor: function(chart, kwArgs){
+ // summary:
+ // The constructor for an axis.
+ // chart: dojox.charting.Chart
+ // The chart the axis belongs to.
+ // kwArgs: dojox.charting.axis2d.__AxisCtorArgs?
+ // Any optional keyword arguments to be used to define this axis.
+ this.opt = lang.clone(this.defaultParams);
+ du.updateWithObject(this.opt, kwArgs);
+ du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
+ },
+ dependOnData: function(){
+ // summary:
+ // Find out whether or not the axis options depend on the data in the axis.
+ return !("min" in this.opt) || !("max" in this.opt); // Boolean
+ },
+ clear: function(){
+ // summary:
+ // Clear out all calculated properties on this axis;
+ // returns: dojox.charting.axis2d.Default
+ // The reference to the axis for functional chaining.
+ delete this.scaler;
+ delete this.ticks;
+ this.dirty = true;
+ return this; // dojox.charting.axis2d.Default
+ },
+ initialized: function(){
+ // summary:
+ // Finds out if this axis has been initialized or not.
+ // returns: Boolean
+ // Whether a scaler has been calculated and if the axis is not dirty.
+ return "scaler" in this && !(this.dirty && this.dependOnData());
+ },
+ setWindow: function(scale, offset){
+ // summary:
+ // Set the drawing "window" for the axis.
+ // scale: Number
+ // The new scale for the axis.
+ // offset: Number
+ // The new offset for the axis.
+ // returns: dojox.charting.axis2d.Default
+ // The reference to the axis for functional chaining.
+ this.scale = scale;
+ this.offset = offset;
+ return this.clear(); // dojox.charting.axis2d.Default
+ },
+ getWindowScale: function(){
+ // summary:
+ // Get the current windowing scale of the axis.
+ return "scale" in this ? this.scale : 1; // Number
+ },
+ getWindowOffset: function(){
+ // summary:
+ // Get the current windowing offset for the axis.
+ return "offset" in this ? this.offset : 0; // Number
+ },
+ _groupLabelWidth: function(labels, font, wcLimit){
+ if(!labels.length){
+ return 0;
+ }
+ if(lang.isObject(labels[0])){
+ labels = df.map(labels, function(label){ return label.text; });
+ }
+ if (wcLimit) {
+ labels = df.map(labels, function(label){
+ return lang.trim(label).length == 0 ? "" : label.substring(0, wcLimit) + this.trailingSymbol;
+ }, this);
+ }
+ var s = labels.join("<br>");
+ return g._base._getTextBox(s, {font: font}).w || 0;
+ },
+ calculate: function(min, max, span, labels){
+ // summary:
+ // Perform all calculations needed to render this axis.
+ // min: Number
+ // The smallest value represented on this axis.
+ // max: Number
+ // The largest value represented on this axis.
+ // span: Number
+ // The span in pixels over which axis calculations are made.
+ // labels: String[]
+ // Optional list of labels.
+ // returns: dojox.charting.axis2d.Default
+ // The reference to the axis for functional chaining.
+ if(this.initialized()){
+ return this;
+ }
+ var o = this.opt;
+ this.labels = "labels" in o ? o.labels : labels;
+ this.scaler = lin.buildScaler(min, max, span, o);
+ var tsb = this.scaler.bounds;
+ if("scale" in this){
+ // calculate new range
+ o.from = tsb.lower + this.offset;
+ o.to = (tsb.upper - tsb.lower) / this.scale + o.from;
+ // make sure that bounds are correct
+ if( !isFinite(o.from) ||
+ isNaN(o.from) ||
+ !isFinite(o.to) ||
+ isNaN(o.to) ||
+ o.to - o.from >= tsb.upper - tsb.lower
+ ){
+ // any error --- remove from/to bounds
+ delete o.from;
+ delete o.to;
+ delete this.scale;
+ delete this.offset;
+ }else{
+ // shift the window, if we are out of bounds
+ if(o.from < tsb.lower){
+ o.to += tsb.lower - o.from;
+ o.from = tsb.lower;
+ }else if(o.to > tsb.upper){
+ o.from += tsb.upper - o.to;
+ o.to = tsb.upper;
+ }
+ // update the offset
+ this.offset = o.from - tsb.lower;
+ }
+ // re-calculate the scaler
+ this.scaler = lin.buildScaler(min, max, span, o);
+ tsb = this.scaler.bounds;
+ // cleanup
+ if(this.scale == 1 && this.offset == 0){
+ delete this.scale;
+ delete this.offset;
+ }
+ }
+
+ var ta = this.chart.theme.axis, labelWidth = 0, rotation = o.rotation % 360,
+ // TODO: we use one font --- of major tick, we need to use major and minor fonts
+ taFont = o.font || (ta.majorTick && ta.majorTick.font) || (ta.tick && ta.tick.font),
+ size = taFont ? g.normalizedLength(g.splitFontString(taFont).size) : 0,
+ cosr = Math.abs(Math.cos(rotation * Math.PI / 180)),
+ sinr = Math.abs(Math.sin(rotation * Math.PI / 180));
+
+ if(rotation < 0){
+ rotation += 360;
+ }
+
+ if(size){
+ if(this.vertical ? rotation != 0 && rotation != 180 : rotation != 90 && rotation != 270){
+ // we need width of all labels
+ if(this.labels){
+ labelWidth = this._groupLabelWidth(this.labels, taFont, o.maxLabelCharCount);
+ }else{
+ var labelLength = Math.ceil(
+ Math.log(
+ Math.max(
+ Math.abs(tsb.from),
+ Math.abs(tsb.to)
+ )
+ ) / Math.LN10
+ ),
+ t = [];
+ if(tsb.from < 0 || tsb.to < 0){
+ t.push("-");
+ }
+ t.push(dstring.rep("9", labelLength));
+ var precision = Math.floor(
+ Math.log( tsb.to - tsb.from ) / Math.LN10
+ );
+ if(precision > 0){
+ t.push(".");
+ t.push(dstring.rep("9", precision));
+ }
+ labelWidth = g._base._getTextBox(
+ t.join(""),
+ { font: taFont }
+ ).w;
+ }
+ labelWidth = o.maxLabelSize ? Math.min(o.maxLabelSize, labelWidth) : labelWidth;
+ }else{
+ labelWidth = size;
+ }
+ switch(rotation){
+ case 0:
+ case 90:
+ case 180:
+ case 270:
+ // trivial cases: use labelWidth
+ break;
+ default:
+ // rotated labels
+ var gap1 = Math.sqrt(labelWidth * labelWidth + size * size), // short labels
+ gap2 = this.vertical ? size * cosr + labelWidth * sinr : labelWidth * cosr + size * sinr; // slanted labels
+ labelWidth = Math.min(gap1, gap2);
+ break;
+ }
+ }
+
+ this.scaler.minMinorStep = labelWidth + labelGap;
+ this.ticks = lin.buildTicks(this.scaler, o);
+ return this; // dojox.charting.axis2d.Default
+ },
+ getScaler: function(){
+ // summary:
+ // Get the pre-calculated scaler object.
+ return this.scaler; // Object
+ },
+ getTicks: function(){
+ // summary:
+ // Get the pre-calculated ticks object.
+ return this.ticks; // Object
+ }
+ });
+});
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