CODEWITHSUNDEEP
javajunggraph-visualization
Pieter-Jan
Pieter-Jan

Reputation: 1685

JUNG Layout's preferred size, based on the size of the graph

I'm using the JUNG framework, with the FRLayout. Like this:

layout = new FRLayout<String, Number>(graph);
preferredSize = new Dimension(600, 600);

final VisualizationModel<String, Number> visualizationModel = 
new DefaultVisualizationModel<String, Number>(layout, preferredSize);
vv = new VisualizationViewer<String, Number>(visualizationModel, preferredSize);

I've placed this in a GraphZoomScrollPane. I can zoom in, zoom out, move the graph around until it looks just like I want it, but I would like it to be like that when I start my Swing application.

What I want exactly, is that the graph's PreferredSize dynamically adjusts based on the graph size, so that when I load large graphs, I don't have to zoom in a billion times before the vertices don't overlap anymore.

What doesn't fit in my panel should normally then "disappear" behind the scrollbars.

Upvotes: 3

Views: 1426

Answers (1)

sdasdadas
sdasdadas

Reputation: 25116

You can scale it programmatically using the following:

double amount = 1.0;    // Or negative to zoom out.
ScalingControl scaler = new CrossoverScalingControl();
scaler.scale(vv, amount > 0 ? 1.1f : 1 / 1.1f, vv.getCenter());

Note: I got this from StackOverflow before (so the credit for this code is not mine), but I can't seem to find the original question.

EDIT:

I found it:

How to manually set the zoom on a Jung visualisation?

Upvotes: 1

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