Allow to draw a widget on a PGraphics.

[aengelke]

For a PApplet, you could use applet.g

[martinleopold]

It can't be generalized to PGraphics, since some features of PApplet are needed (e.g. events). But a PGraphics could be specified as "render target". Give me some motivation. How would you use that feature?

[aengelke]

In a windowed system, it would be easier to render the UI on a PGraphics and to move the PGraphics in the sketch than changing each components position.

[martinleopold]

true. for now it's possible to move the whole GUI overlay around by using PUI.position()