Hover tooltiptext in Rascal figure

问题

Is it possible to produce a figure in Rascal that shows a tooltiptext during hover? I mean the little yellow thing like the one prescribed by the title attribute of a <a> tag in HTML.

回答1:

yes in these slides (http://homepages.cwi.nl/~jurgenv/teaching/evolution1314/slides/intro-visualization.pdf) an example is shown:

FProperty popup(str S){
 return mouseOver(box(text(S), fillColor("lightyellow"),
 grow(1.2),resizable(false)));
}

box(size(50),fillColor("red"), popup("Hello"))

来源：https://stackoverflow.com/questions/20299595/hover-tooltiptext-in-rascal-figure