quantum-os/qml-material — pull request #8 by baszczewski (2014-11-24 20:29:47+00:00)
Title: Improved ripple animation, consistent with the material design.

I think that ink element should have another kind of animation, based on tap position. The most important thing is that circle shouldn't hide before mouse release. Moreover with multiple taps we should see many circles.

https://www.polymer-project.org/components/paper-ripple/demo.html