cacert-testmgr/external/ZendFramework-1.9.5/externals/dojo/dojox/charting/action2d/Tooltip.js
Markus Warg 8398c9048d initially import ZendFramework-1.9.5 into repository
code was modified slightly, so the code differs from the original downloadable 1.9.5 version
2010-03-31 10:12:32 +02:00

109 lines
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3.3 KiB
JavaScript

dojo.provide("dojox.charting.action2d.Tooltip");
dojo.require("dojox.charting.action2d.Base");
dojo.require("dijit.Tooltip");
dojo.require("dojox.lang.functional");
dojo.require("dojox.lang.functional.scan");
dojo.require("dojox.lang.functional.fold");
(function(){
var DEFAULT_TEXT = function(o){
var t = o.run && o.run.data && o.run.data[o.index];
if(t && typeof t == "object" && t.tooltip){
return t.tooltip;
}
return o.element == "bar" ? o.x : o.y;
};
var df = dojox.lang.functional, pi4 = Math.PI / 4, pi2 = Math.PI / 2;
dojo.declare("dojox.charting.action2d.Tooltip", dojox.charting.action2d.Base, {
// the data description block for the widget parser
defaultParams: {
text: DEFAULT_TEXT // the function to produce a tooltip from the object
},
optionalParams: {}, // no optional parameters
constructor: function(chart, plot, kwArgs){
// process optional named parameters
this.text = kwArgs && kwArgs.text ? kwArgs.text : DEFAULT_TEXT;
this.connect();
},
process: function(o){
if(o.type === "onplotreset" || o.type === "onmouseout"){
dijit.hideTooltip(this.aroundRect);
this.aroundRect = null;
return;
}
if(!o.shape || o.type !== "onmouseover"){ return; }
// calculate relative coordinates and the position
var aroundRect = {type: "rect"}, position = ["after", "before"];
switch(o.element){
case "marker":
aroundRect.x = o.cx;
aroundRect.y = o.cy;
aroundRect.width = aroundRect.height = 1;
break;
case "circle":
aroundRect.x = o.cx - o.cr;
aroundRect.y = o.cy - o.cr;
aroundRect.width = aroundRect.height = 2 * o.cr;
break;
case "column":
position = ["above", "below"];
case "bar":
aroundRect = dojo.clone(o.shape.getShape());
break;
default:
//case "slice":
if(!this.angles){
// calculate the running total of slice angles
if(typeof o.run.data[0] == "number"){
this.angles = df.map(df.scanl(o.run.data, "+", 0),
"* 2 * Math.PI / this", df.foldl(o.run.data, "+", 0));
}else{
this.angles = df.map(df.scanl(o.run.data, "a + b.y", 0),
"* 2 * Math.PI / this", df.foldl(o.run.data, "a + b.y", 0));
}
}
var angle = (this.angles[o.index] + this.angles[o.index + 1]) / 2;
aroundRect.x = o.cx + o.cr * Math.cos(angle);
aroundRect.y = o.cy + o.cr * Math.sin(angle);
aroundRect.width = aroundRect.height = 1;
// calculate the position
if(angle < pi4){
// do nothing: the position is right
}else if(angle < pi2 + pi4){
position = ["below", "above"];
}else if(angle < Math.PI + pi4){
position = ["before", "after"];
}else if(angle < 2 * Math.PI - pi4){
position = ["above", "below"];
}
/*
else{
// do nothing: the position is right
}
*/
break;
}
// adjust relative coordinates to absolute, and remove fractions
var lt = dojo.coords(this.chart.node, true);
aroundRect.x += lt.x;
aroundRect.y += lt.y;
aroundRect.x = Math.round(aroundRect.x);
aroundRect.y = Math.round(aroundRect.y);
aroundRect.width = Math.ceil(aroundRect.width);
aroundRect.height = Math.ceil(aroundRect.height);
this.aroundRect = aroundRect;
dijit.showTooltip(this.text(o), this.aroundRect, position);
}
});
})();