CODEWITHSUNDEEP
javaswingjpaneljscrollpanetween
Bill Mack
Bill Mack

Reputation: 49

Smoothing Swing animations

I would like to know how to smooth the automatic transition of a JScrollPane. I'm using 

JScrollBar scroll = scollpane.getVerticalScrollBar();
scroll.setValue(scroll.getMaximum());

Something like JScrollPane.setUnitIncrement(inc) with inc values of ~0.001 and a 10ms delay between increments would help, I guess, but setUnitIncrement only takes ints.

Also, I want the same smooth animation for adding an element like JList to a JPanel with BoxLayout. I'd like it to have a smooth top-to-bottom appearance, not instantly being displayed when using JPanel.add(JList).

I'm mostly looking towards an implementation of AurelienRibon's SlidingLayout or Tween, but I can't wrap my head around it.

Upvotes: 0

Views: 228

Answers (1)

CosmicGiant
CosmicGiant

Reputation: 6441

Smooth animations (any type, in any program) are done with implementations of Delta-Time.

Most frameworks use a Delta-Time pattern (the ones that don't are doing it wrong, because other methods are prone to Time-Drifting bugs), and are hard to understand if you don't grasp the concept of Delta-Time first.

Upvotes: 1

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