parent nodes: PrefuseDoku

Actions

We are in packages:
http://www.prefuse.org/doc/api/prefuse/action/package-summary.html and http://www.prefuse.org/doc/api/prefuse/action/assignment/package-summary.html

ActionList

This is a container for Actions that are executed in a chain.
ActionList draw = new ActionList();
draw.add(nodeTextAction);
draw.add(nodeStrokeAction);
draw.add(nodeFillAction);
draw.add(edgeStrokesAction);

ColorActions

With ColorActions you can define of course the color for items.
    // instantiate a colorAction for a specified group, what it is applied to and a default color
    ColorAction colorAction = new ColorAction("group", VisualItem.FILLCOLOR, ColorLib.rgba(255,255,255,0));
    // set color for the current focus group
    colorAction.add("ingroup('_focus_')", ColorLib.rgba(198,229,229,230));
    // set color for hover
    colorAction.add("_hover", ColorLib.gray(220,230));
    // set color for search results
    colorAction.add("ingroup('_search_')", ColorLib.rgba(200,100,0,230));
    // set color for highlighted nodes
    colorAction.add("_highlight", ColorLib.rgb(255,200,125));

SizeAction

With SizeActions you can define at what size items are displayed.
// sets the size to the specified group
SizeAction edgeSizeAction = new SizeAction("group");
// add a filter and a max value
edgeSizeAction.add(expression, 5);

FontAction

// sets a group to current font for text that is displayed
FontAction fonts = new FontAction(NODES, FontLib.getFont("Tahoma", 10));

ShapeAction

StrokeAction

You can create your own strokes.
The following example assigns a dotted stroke to the edges selected by the expression.
BasicStroke basicStroke = new BasicStroke( 
    2f, // width
    BasicStroke.CAP_BUTT, // end style
    BasicStroke.JOIN_ROUND, // join style
    1f, //limit for join
    new float[]{5,15}, //dashes (visible, invisible)
    0 //offset 
    );
StrokeAction edgeStrokeAction = new StrokeAction(EDGES);
edgeStrokeAction.add(expression, basicStroke);

DataColorAction

// arguments are: group, field, dataType, colorField, int[] palette
// if you do not provide a palette a gray scaling is used
DataColorAction nodeDataColorAction = new DataColorAction(NODES, SIZE, Constants.NUMERICAL, VisualItem.FILLCOLOR, ColorLib.getInterpolatedPalette(ColorLib.rgb(200,0, 0), ColorLib.rgb(0,0, 200)));
A working example can be found at HelloWorldColoredNodes.

DataShapeAction

DataSizeAction 

DataSizeAction dsa = new DataSizeAction("group", "field");
dsa.setMaximumSize(value);