source: [view]
dojo.provide("dojox.charting.axis2d.Default");
dojo.require("dojox.charting.axis2d.Invisible");
dojo.require("dojox.charting.scaler.linear");
dojo.require("dojox.charting.axis2d.common");
dojo.require("dojo.colors");
dojo.require("dojo.string");
dojo.require("dojox.gfx");
dojo.require("dojox.lang.functional");
dojo.require("dojox.lang.utils");
dojox.charting.axis2d.__AxisCtorArgs = function(
vertical, fixUpper, fixLower, natural, leftBottom,
includeZero, fixed, majorLabels, minorTicks, minorLabels, microTicks, htmlLabels,
min, max, from, to, majorTickStep, minorTickStep, microTickStep,
labels, labelFunc, maxLabelSize,
stroke, majorTick, minorTick, microTick, tick,
font, fontColor
){
// summary:
// Optional arguments used in the definition of an axis.
//
// vertical: Boolean?
// A flag that says whether an axis is vertical (i.e. y axis) or horizontal. Default is false (horizontal).
// fixUpper: String?
// Align the greatest value on the axis with the specified tick level. Options are "major", "minor", "micro", or "none". Defaults to "none".
// fixLower: String?
// Align the smallest value on the axis with the specified tick level. Options are "major", "minor", "micro", or "none". Defaults to "none".
// natural: Boolean?
// Ensure tick marks are made on "natural" numbers. Defaults to false.
// leftBottom: Boolean?
// The position of a vertical axis; if true, will be placed against the left-bottom corner of the chart. Defaults to true.
// includeZero: Boolean?
// Include 0 on the axis rendering. Default is false.
// fixed: Boolean?
// Force all axis labels to be fixed numbers. Default is true.
// majorLabels: Boolean?
// Flag to draw all labels at major ticks. Default is true.
// minorTicks: Boolean?
// Flag to draw minor ticks on an axis. Default is true.
// minorLabels: Boolean?
// Flag to draw labels on minor ticks. Default is true.
// microTicks: Boolean?
// Flag to draw micro ticks on an axis. Default is false.
// htmlLabels: Boolean?
// Flag to use HTML (as opposed to the native vector graphics engine) to draw labels. Default is true.
// min: Number?
// The smallest value on an axis. Default is 0.
// max: Number?
// The largest value on an axis. Default is 1.
// from: Number?
// Force the chart to render data visible from this value. Default is 0.
// to: Number?
// Force the chart to render data visible to this value. Default is 1.
// majorTickStep: Number?
// The amount to skip before a major tick is drawn. Default is 4.
// minorTickStep: Number?
// The amount to skip before a minor tick is drawn. Default is 2.
// microTickStep: Number?
// The amount to skip before a micro tick is drawn. Default is 1.
// labels: Object[]?
// An array of labels for major ticks, with corresponding numeric values, ordered by value.
// labelFunc: Function?
// An optional function used to compute label values.
// maxLabelSize: Number?
// The maximum size, in pixels, for a label. To be used with the optional label function.
// stroke: dojox.gfx.Stroke?
// An optional stroke to be used for drawing an axis.
// majorTick: Object?
// An object containing a dojox.gfx.Stroke, and a length (number) for a major tick.
// minorTick: Object?
// An object containing a dojox.gfx.Stroke, and a length (number) for a minor tick.
// microTick: Object?
// An object containing a dojox.gfx.Stroke, and a length (number) for a micro tick.
// tick: Object?
// An object containing a dojox.gfx.Stroke, and a length (number) for a tick.
// font: String?
// An optional font definition (as used in the CSS font property) for labels.
// fontColor: String|dojo.Color?
// An optional color to be used in drawing labels.
this.vertical = vertical;
this.fixUpper = fixUpper;
this.fixLower = fixLower;
this.natural = natural;
this.leftBottom = leftBottom;
this.includeZero = includeZero;
this.fixed = fixed;
this.majorLabels = majorLabels;
this.minorTicks = minorTicks;
this.minorLabels = minorLabels;
this.microTicks = microTicks;
this.htmlLabels = htmlLabels;
this.min = min;
this.max = max;
this.from = from;
this.to = to;
this.majorTickStep = majorTickStep;
this.minorTickStep = minorTickStep;
this.microTickStep = microTickStep;
this.labels = labels;
this.labelFunc = labelFunc;
this.maxLabelSize = maxLabelSize;
this.stroke = stroke;
this.majorTick = majorTick;
this.minorTick = minorTick;
this.microTick = microTick;
this.tick = tick;
this.font = font;
this.fontColor = fontColor;
}
(function(){
var dc = dojox.charting,
du = dojox.lang.utils,
g = dojox.gfx,
lin = dc.scaler.linear,
labelGap = 4, // in pixels
centerAnchorLimit = 45; // in degrees
dojo.declare("dojox.charting.axis2d.Default", dojox.charting.axis2d.Invisible, {
// 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
htmlLabels: true // use HTML to draw labels
},
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
// theme components
stroke: {}, // stroke for an axis
majorTick: {}, // stroke + length for a tick
minorTick: {}, // stroke + length for a tick
microTick: {}, // stroke + length for a tick
tick: {}, // stroke + length for a tick
font: "", // font for labels
fontColor: "", // color for labels as a string
title: "", // axis title
titleGap: 0, // gap between axis title and axis label
titleFont: "", // axis title font
titleFontColor: "", // axis title font color
titleOrientation: "" // "axis" means the title facing the axis, "away" means facing away
},
constructor: function(chart, kwArgs){
// summary:
// The constructor for an axis.
// chart: dojox.charting.Chart2D
// The chart the axis belongs to.
// kwArgs: dojox.charting.axis2d.__AxisCtorArgs?
// Any optional keyword arguments to be used to define this axis.
this.opt = dojo.clone(this.defaultParams);
du.updateWithObject(this.opt, kwArgs);
du.updateWithPattern(this.opt, kwArgs, this.optionalParams);
},
getOffsets: function(){
// summary:
// Get the physical offset values for this axis (used in drawing data series).
// returns: Object
// The calculated offsets in the form of { l, r, t, b } (left, right, top, bottom).
var s = this.scaler, offsets = { l: 0, r: 0, t: 0, b: 0 };
if(!s){
return offsets;
}
var o = this.opt, labelWidth = 0, a, b, c, d,
gl = dc.scaler.common.getNumericLabel,
offset = 0, ma = s.major, mi = s.minor,
ta = this.chart.theme.axis,
// 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),
taTitleFont = o.titleFont || (ta.tick && ta.tick.titleFont),
taTitleGap = (o.titleGap==0) ? 0 : o.titleGap || (ta.tick && ta.tick.titleGap) || 15,
taMajorTick = this.chart.theme.getTick("major", o),
taMinorTick = this.chart.theme.getTick("minor", o),
size = taFont ? g.normalizedLength(g.splitFontString(taFont).size) : 0,
tsize = taTitleFont ? g.normalizedLength(g.splitFontString(taTitleFont).size) : 0,
rotation = o.rotation % 360, leftBottom = o.leftBottom,
cosr = Math.abs(Math.cos(rotation * Math.PI / 180)),
sinr = Math.abs(Math.sin(rotation * Math.PI / 180));
this.trailingSymbol = (o.trailingSymbol === undefined || o.trailingSymbol === null) ? this.trailingSymbol : o.trailingSymbol;
if(rotation < 0){
rotation += 360;
}
if(size){
// we need width of all labels
if(this.labels){
labelWidth = this._groupLabelWidth(this.labels, taFont, o.maxLabelCharCount);
}else{
labelWidth = this._groupLabelWidth([
gl(ma.start, ma.prec, o),
gl(ma.start + ma.count * ma.tick, ma.prec, o),
gl(mi.start, mi.prec, o),
gl(mi.start + mi.count * mi.tick, mi.prec, o)
], taFont, o.maxLabelCharCount);
}
labelWidth = o.maxLabelSize ? Math.min(o.maxLabelSize, labelWidth) : labelWidth;
if(this.vertical){
var side = leftBottom ? "l" : "r";
switch(rotation){
case 0:
case 180:
offsets[side] = labelWidth;
offsets.t = offsets.b = size / 2;
break;
case 90:
case 270:
offsets[side] = size;
offsets.t = offsets.b = labelWidth / 2;
break;
default:
if(rotation <= centerAnchorLimit || (180 < rotation && rotation <= (180 + centerAnchorLimit))){
offsets[side] = size * sinr / 2 + labelWidth * cosr;
offsets[leftBottom ? "t" : "b"] = size * cosr / 2 + labelWidth * sinr;
offsets[leftBottom ? "b" : "t"] = size * cosr / 2;
}else if(rotation > (360 - centerAnchorLimit) || (180 > rotation && rotation > (180 - centerAnchorLimit))){
offsets[side] = size * sinr / 2 + labelWidth * cosr;
offsets[leftBottom ? "b" : "t"] = size * cosr / 2 + labelWidth * sinr;
offsets[leftBottom ? "t" : "b"] = size * cosr / 2;
}else if(rotation < 90 || (180 < rotation && rotation < 270)){
offsets[side] = size * sinr + labelWidth * cosr;
offsets[leftBottom ? "t" : "b"] = size * cosr + labelWidth * sinr;
}else{
offsets[side] = size * sinr + labelWidth * cosr;
offsets[leftBottom ? "b" : "t"] = size * cosr + labelWidth * sinr;
}
break;
}
offsets[side] += labelGap + Math.max(taMajorTick.length, taMinorTick.length) + (o.title ? (tsize + taTitleGap) : 0);
}else{
var side = leftBottom ? "b" : "t";
switch(rotation){
case 0:
case 180:
offsets[side] = size;
offsets.l = offsets.r = labelWidth / 2;
break;
case 90:
case 270:
offsets[side] = labelWidth;
offsets.l = offsets.r = size / 2;
break;
default:
if((90 - centerAnchorLimit) <= rotation && rotation <= 90 || (270 - centerAnchorLimit) <= rotation && rotation <= 270){
offsets[side] = size * sinr / 2 + labelWidth * cosr;
offsets[leftBottom ? "r" : "l"] = size * cosr / 2 + labelWidth * sinr;
offsets[leftBottom ? "l" : "r"] = size * cosr / 2;
}else if(90 <= rotation && rotation <= (90 + centerAnchorLimit) || 270 <= rotation && rotation <= (270 + centerAnchorLimit)){
offsets[side] = size * sinr / 2 + labelWidth * cosr;
offsets[leftBottom ? "l" : "r"] = size * cosr / 2 + labelWidth * sinr;
offsets[leftBottom ? "r" : "l"] = size * cosr / 2;
}else if(rotation < centerAnchorLimit || (180 < rotation && rotation < (180 - centerAnchorLimit))){
offsets[side] = size * sinr + labelWidth * cosr;
offsets[leftBottom ? "r" : "l"] = size * cosr + labelWidth * sinr;
}else{
offsets[side] = size * sinr + labelWidth * cosr;
offsets[leftBottom ? "l" : "r"] = size * cosr + labelWidth * sinr;
}
break;
}
offsets[side] += labelGap + Math.max(taMajorTick.length, taMinorTick.length) + (o.title ? (tsize + taTitleGap) : 0);
}
}
if(labelWidth){
this._cachedLabelWidth = labelWidth;
}
return offsets; // Object
},
render: function(dim, offsets){
// summary:
// Render/draw the axis.
// dim: Object
// An object of the form { width, height}.
// offsets: Object
// An object of the form { l, r, t, b }.
// returns: dojox.charting.axis2d.Default
// The reference to the axis for functional chaining.
if(!this.dirty){
return this; // dojox.charting.axis2d.Default
}
// prepare variable
var o = this.opt, ta = this.chart.theme.axis, leftBottom = o.leftBottom, rotation = o.rotation % 360,
start, stop, titlePos, titleRotation=0, titleOffset, axisVector, tickVector, anchorOffset, labelOffset, labelAlign,
// 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),
taTitleFont = o.titleFont || (ta.tick && ta.tick.titleFont),
// TODO: we use one font color --- we need to use different colors
taFontColor = o.fontColor || (ta.majorTick && ta.majorTick.fontColor) || (ta.tick && ta.tick.fontColor) || "black",
taTitleFontColor = o.titleFontColor || (ta.tick && ta.tick.titleFontColor) || "black",
taTitleGap = (o.titleGap==0) ? 0 : o.titleGap || (ta.tick && ta.tick.titleGap) || 15,
taTitleOrientation = o.titleOrientation || (ta.tick && ta.tick.titleOrientation) || "axis",
taMajorTick = this.chart.theme.getTick("major", o),
taMinorTick = this.chart.theme.getTick("minor", o),
taMicroTick = this.chart.theme.getTick("micro", o),
tickSize = Math.max(taMajorTick.length, taMinorTick.length, taMicroTick.length),
taStroke = "stroke" in o ? o.stroke : ta.stroke,
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)),
tsize = taTitleFont ? g.normalizedLength(g.splitFontString(taTitleFont).size) : 0;
if(rotation < 0){
rotation += 360;
}
if(this.vertical){
start = {y: dim.height - offsets.b};
stop = {y: offsets.t};
titlePos = {y: (dim.height - offsets.b + offsets.t)/2};
titleOffset = size * sinr + (this._cachedLabelWidth || 0) * cosr + labelGap + Math.max(taMajorTick.length, taMinorTick.length) + tsize + taTitleGap;
axisVector = {x: 0, y: -1};
labelOffset = {x: 0, y: 0};
tickVector = {x: 1, y: 0};
anchorOffset = {x: labelGap, y: 0};
switch(rotation){
case 0:
labelAlign = "end";
labelOffset.y = size * 0.4;
break;
case 90:
labelAlign = "middle";
labelOffset.x = -size;
break;
case 180:
labelAlign = "start";
labelOffset.y = -size * 0.4;
break;
case 270:
labelAlign = "middle";
break;
default:
if(rotation < centerAnchorLimit){
labelAlign = "end";
labelOffset.y = size * 0.4;
}else if(rotation < 90){
labelAlign = "end";
labelOffset.y = size * 0.4;
}else if(rotation < (180 - centerAnchorLimit)){
labelAlign = "start";
}else if(rotation < (180 + centerAnchorLimit)){
labelAlign = "start";
labelOffset.y = -size * 0.4;
}else if(rotation < 270){
labelAlign = "start";
labelOffset.x = leftBottom ? 0 : size * 0.4;
}else if(rotation < (360 - centerAnchorLimit)){
labelAlign = "end";
labelOffset.x = leftBottom ? 0 : size * 0.4;
}else{
labelAlign = "end";
labelOffset.y = size * 0.4;
}
}
if(leftBottom){
start.x = stop.x = offsets.l;
titleRotation = (taTitleOrientation && taTitleOrientation == "away") ? 90 : 270;
titlePos.x = offsets.l - titleOffset + (titleRotation == 270 ? tsize : 0);
tickVector.x = -1;
anchorOffset.x = -anchorOffset.x;
}else{
start.x = stop.x = dim.width - offsets.r;
titleRotation = (taTitleOrientation && taTitleOrientation == "axis") ? 90 : 270;
titlePos.x = dim.width - offsets.r + titleOffset - (titleRotation == 270 ? 0 : tsize);
switch(labelAlign){
case "start":
labelAlign = "end";
break;
case "end":
labelAlign = "start";
break;
case "middle":
labelOffset.x += size;
break;
}
}
}else{
start = {x: offsets.l};
stop = {x: dim.width - offsets.r};
titlePos = {x: (dim.width - offsets.r + offsets.l)/2};
titleOffset = size * cosr + (this._cachedLabelWidth || 0) * sinr + labelGap + Math.max(taMajorTick.length, taMinorTick.length) + tsize + taTitleGap;
axisVector = {x: 1, y: 0};
labelOffset = {x: 0, y: 0};
tickVector = {x: 0, y: 1};
anchorOffset = {x: 0, y: labelGap};
switch(rotation){
case 0:
labelAlign = "middle";
labelOffset.y = size;
break;
case 90:
labelAlign = "start";
labelOffset.x = -size * 0.4;
break;
case 180:
labelAlign = "middle";
break;
case 270:
labelAlign = "end";
labelOffset.x = size * 0.4;
break;
default:
if(rotation < (90 - centerAnchorLimit)){
labelAlign = "start";
labelOffset.y = leftBottom ? size : 0;
}else if(rotation < (90 + centerAnchorLimit)){
labelAlign = "start";
labelOffset.x = -size * 0.4;
}else if(rotation < 180){
labelAlign = "start";
labelOffset.y = leftBottom ? 0 : -size;
}else if(rotation < (270 - centerAnchorLimit)){
labelAlign = "end";
labelOffset.y = leftBottom ? 0 : -size;
}else if(rotation < (270 + centerAnchorLimit)){
labelAlign = "end";
labelOffset.y = leftBottom ? size * 0.4 : 0;
}else{
labelAlign = "end";
labelOffset.y = leftBottom ? size : 0;
}
}
if(leftBottom){
start.y = stop.y = dim.height - offsets.b;
titleRotation = (taTitleOrientation && taTitleOrientation == "axis") ? 180 : 0;
titlePos.y = dim.height - offsets.b + titleOffset - (titleRotation ? tsize : 0);
}else{
start.y = stop.y = offsets.t;
titleRotation = (taTitleOrientation && taTitleOrientation == "away") ? 180 : 0;
titlePos.y = offsets.t - titleOffset + (titleRotation ? 0 : tsize);
tickVector.y = -1;
anchorOffset.y = -anchorOffset.y;
switch(labelAlign){
case "start":
labelAlign = "end";
break;
case "end":
labelAlign = "start";
break;
case "middle":
labelOffset.y -= size;
break;
}
}
}
// render shapes
this.cleanGroup();
try{
var s = this.group,
c = this.scaler,
t = this.ticks,
canLabel,
f = lin.getTransformerFromModel(this.scaler),
// GFX Canvas now supports labels, so let's _not_ fallback to HTML anymore on canvas, just use
// HTML labels if explicitly asked + no rotation + no IE + no Opera
labelType = !titleRotation && !rotation && this.opt.htmlLabels && !dojo.isIE && !dojo.isOpera ? "html" : "gfx",
dx = tickVector.x * taMajorTick.length,
dy = tickVector.y * taMajorTick.length;
s.createLine({
x1: start.x,
y1: start.y,
x2: stop.x,
y2: stop.y
}).setStroke(taStroke);
//create axis title
if(o.title){
var axisTitle = dc.axis2d.common.createText[labelType](
this.chart,
s,
titlePos.x,
titlePos.y,
"middle",
o.title,
taTitleFont,
taTitleFontColor
);
if(labelType == "html"){
this.htmlElements.push(axisTitle);
}else{
//as soon as rotation is provided, labelType won't be "html"
//rotate gfx labels
axisTitle.setTransform(g.matrix.rotategAt(titleRotation, titlePos.x, titlePos.y));
}
}
dojo.forEach(t.major, function(tick){
var offset = f(tick.value), elem,
x = start.x + axisVector.x * offset,
y = start.y + axisVector.y * offset;
s.createLine({
x1: x, y1: y,
x2: x + dx,
y2: y + dy
}).setStroke(taMajorTick);
if(tick.label){
var label = o.maxLabelCharCount ? this.getTextWithLimitCharCount(tick.label, taFont, o.maxLabelCharCount) : {
text: tick.label,
truncated: false
};
label = o.maxLabelSize ? this.getTextWithLimitLength(label.text, taFont, o.maxLabelSize, label.truncated) : label;
elem = dc.axis2d.common.createText[labelType](
this.chart,
s,
x + dx + anchorOffset.x + (rotation ? 0 : labelOffset.x),
y + dy + anchorOffset.y + (rotation ? 0 : labelOffset.y),
labelAlign,
label.text,
taFont,
taFontColor
//this._cachedLabelWidth
);
label.truncated && this.labelTooltip(elem, this.chart, tick.label, label.text, taFont, labelType);
if(labelType == "html"){
this.htmlElements.push(elem);
}else if(rotation){
elem.setTransform([
{dx: labelOffset.x, dy: labelOffset.y},
g.matrix.rotategAt(
rotation,
x + dx + anchorOffset.x,
y + dy + anchorOffset.y
)
]);
}
}
}, this);
dx = tickVector.x * taMinorTick.length;
dy = tickVector.y * taMinorTick.length;
canLabel = c.minMinorStep <= c.minor.tick * c.bounds.scale;
dojo.forEach(t.minor, function(tick){
var offset = f(tick.value), elem,
x = start.x + axisVector.x * offset,
y = start.y + axisVector.y * offset;
s.createLine({
x1: x, y1: y,
x2: x + dx,
y2: y + dy
}).setStroke(taMinorTick);
if(canLabel && tick.label){
var label = o.maxLabelCharCount ? this.getTextWithLimitCharCount(tick.label, taFont, o.maxLabelCharCount) : {
text: tick.label,
truncated: false
};
label = o.maxLabelSize ? this.getTextWithLimitLength(label.text, taFont, o.maxLabelSize, label.truncated) : label;
elem = dc.axis2d.common.createText[labelType](
this.chart,
s,
x + dx + anchorOffset.x + (rotation ? 0 : labelOffset.x),
y + dy + anchorOffset.y + (rotation ? 0 : labelOffset.y),
labelAlign,
label.text,
taFont,
taFontColor
//this._cachedLabelWidth
);
label.truncated && this.labelTooltip(elem, this.chart, tick.label, label.text, taFont, labelType);
if(labelType == "html"){
this.htmlElements.push(elem);
}else if(rotation){
elem.setTransform([
{dx: labelOffset.x, dy: labelOffset.y},
g.matrix.rotategAt(
rotation,
x + dx + anchorOffset.x,
y + dy + anchorOffset.y
)
]);
}
}
}, this);
dx = tickVector.x * taMicroTick.length;
dy = tickVector.y * taMicroTick.length;
dojo.forEach(t.micro, function(tick){
var offset = f(tick.value), elem,
x = start.x + axisVector.x * offset,
y = start.y + axisVector.y * offset;
s.createLine({
x1: x, y1: y,
x2: x + dx,
y2: y + dy
}).setStroke(taMicroTick);
}, this);
}catch(e){
// squelch
}
this.dirty = false;
return this; // dojox.charting.axis2d.Default
},
labelTooltip: function(elem, chart, label, truncatedLabel, font, elemType){
// to avoid requiring dijit module for that feature, let's test that
// dynamically and return if we can't do it
if(!dijit || !dijit.Tooltip){
return;
}
var aroundRect = {type: "rect"}, position = ["above", "below"],
fontWidth = dojox.gfx._base._getTextBox(truncatedLabel, {font: font}).w || 0;
fontHeight = font ? g.normalizedLength(g.splitFontString(font).size) : 0;
if(elemType == "html"){
dojo.mixin(aroundRect, dojo.coords(elem.firstChild, true));
aroundRect.width = Math.ceil(fontWidth);
aroundRect.height = Math.ceil(fontHeight);
this._events.push({
shape: dojo,
handle: dojo.connect(elem.firstChild, "onmouseover", this, function(e){
dijit.showTooltip(label, aroundRect, position);
})
});
this._events.push({
shape: dojo,
handle: dojo.connect(elem.firstChild, "onmouseout", this, function(e){
dijit.hideTooltip(aroundRect);
})
});
}else{
var shp = elem.getShape(),
lt = dojo.coords(chart.node, true);
aroundRect = dojo.mixin(aroundRect, {
x: shp.x - fontWidth / 2,
y: shp.y
});
aroundRect.x += lt.x;
aroundRect.y += lt.y;
aroundRect.x = Math.round(aroundRect.x);
aroundRect.y = Math.round(aroundRect.y);
aroundRect.width = Math.ceil(fontWidth);
aroundRect.height = Math.ceil(fontHeight);
this._events.push({
shape: elem,
handle: elem.connect("onmouseenter", this, function(e){
dijit.showTooltip(label, aroundRect, position);
})
});
this._events.push({
shape: elem,
handle: elem.connect("onmouseleave", this, function(e){
dijit.hideTooltip(aroundRect);
})
});
}