#4625 closed defect (wontfix)
"Patch" to allow setting tooltips on plotted markers + IE fixes
Reported by: | guest | Owned by: | Tom Trenka |
---|---|---|---|
Priority: | high | Milestone: | |
Component: | Charting | Version: | 0.4.2 |
Keywords: | tooltip, onclick event | Cc: | [email protected]… |
Blocked By: | Blocking: |
Description
Sorry if this is not a real patch, but I hope it could be useful anyway.
The following are some modifications to Dojo Charting v 0.4.3 to uses the "applyTo" features of Plotters to add tooltips to plotted markers, and two fixes for IE to displaying them correctly.
First a variant of Chart.render() to allow passing "applyTo" parameter:
dojo.charting.Chart.prototype.applyToRender = function (kwArgs, applyTo) { if (this.node.style.position != "absolute") { this.node.style.position = "relative"; } for (var i = 0; i < this.plotAreas.length; i++) { var area = this.plotAreas[i].plotArea; var node = area.initialize(); node.style.position = "absolute"; node.style.top = this.plotAreas[i].top + "px"; node.style.left = this.plotAreas[i].left + "px"; this.node.appendChild(node); // *** Modified line. *** //area.render (); area.render (kwArgs, applyTo); } }
Then the first fix for IE to be able to "hover" with mouse on plotted markers:
if (dojo.render.vml.capable && ! dojo.render.svg.capable) { dojo.charting.Plotters._group = function (plotarea) { var group = document.createElement("div"); // *** Commented out style. *** //group.style.position = "absolute"; //group.style.top = "0px"; //group.style.left = "0px"; group.style.width = plotarea.size.width + "px"; group.style.height = plotarea.size.height + "px"; return group; } }
All this allow the following (with a second fix for IE):
someChart.applyToRender ( null, function (marker, data) { marker.setAttribute ( "title", data.fieldX + ' ' + data.fieldY ); marker.onclick = function () { alert ('click'); } // Last fix for IE, otherwise markers are under the line if (dojo.render.vml.capable && ! dojo.render.svg.capable) { marker.style.zIndex = 10; } }
Regards,
Daniele
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Hi Daniele,
Thanks for the patch submissions. We're currently rewriting the charting engine for the Dojo 1.0 release, and are already building this capability into the new version using dojox.gfx--but we appreciate the submission nonetheless.