How to customize the renders in prefuse. Problem in customize images in prefuse layout
- by user324926
HI all,
I have written a java application to show the images in different layouts. I am able to show it different layout correctly but some times the images are overlapped. Can you please help me, how to solve this problem.
My code is given below `import javax.swing.JFrame;
import java.awt.image.BufferedImage;
import javax.imageio.ImageIO;
import java.util.;
import java.io.;
import java.awt.Font;
import prefuse.Constants;
import prefuse.Display;
import prefuse.Visualization;
import prefuse.action.ActionList;
import prefuse.action.RepaintAction;
import prefuse.action.assignment.ColorAction;
import prefuse.action.assignment.FontAction;
import prefuse.action.assignment.DataColorAction;
import prefuse.action.layout.graph.ForceDirectedLayout;
import prefuse.action.layout.graph.;
import prefuse.action.layout.;
import prefuse.activity.Activity;
import prefuse.controls.DragControl;
import prefuse.controls.PanControl;
import prefuse.controls.ZoomControl;
import prefuse.data.Graph;
import prefuse.data.io.DataIOException;
import prefuse.data.io.GraphMLReader;
import prefuse.render.DefaultRendererFactory;
import prefuse.render.LabelRenderer;
import prefuse.util.ColorLib;
import prefuse.visual.VisualItem;
import prefuse.visual.*;
import prefuse.util.FontLib;
import prefuse.action.assignment.DataSizeAction;
import prefuse.data.*;
import prefuse.render.ImageFactory;
public class LayoutExample {
public static void main(String[] argv) throws Exception {
Graph graph = null;
try {
graph = new GraphMLReader().readGraph("/graphs.xml");
} catch ( DataIOException e ) {
e.printStackTrace();
System.err.println("Error loading graph. Exiting...");
System.exit(1);
}
ImageFactory imageFactory = new ImageFactory(100,100);
try
{
//load images and construct imageFactory.
String images[] = new String[3];
images[0] = "data/images/switch.png";
images[1] = "data/images/ip_network.png";
images[2] = "data/images/router.png";
String[] names = new String[] {"Switch","Network","Router"};
BufferedImage img = null;
for(int i=0; i < images.length ; i++)
{
try {
img = ImageIO.read(new File(images[i]));
imageFactory.addImage(names[i],img);
}
catch (IOException e){
}
}
}
catch(Exception exp)
{
}
Visualization vis = new Visualization();
vis.add("graph", graph);
LabelRenderer nodeRenderer = new LabelRenderer("name", "type");
nodeRenderer.setVerticalAlignment(Constants.BOTTOM);
nodeRenderer.setHorizontalPadding(0);
nodeRenderer.setVerticalPadding(0);
nodeRenderer.setImagePosition(Constants.TOP);
nodeRenderer.setMaxImageDimensions(100,100);
DefaultRendererFactory drf = new DefaultRendererFactory();
drf.setDefaultRenderer(nodeRenderer);
vis.setRendererFactory(drf);
ColorAction nText = new ColorAction("graph.nodes", VisualItem.TEXTCOLOR);
nText.setDefaultColor(ColorLib.gray(100));
ColorAction nEdges = new ColorAction("graph.edges", VisualItem.STROKECOLOR);
nEdges.setDefaultColor(ColorLib.gray(100));
// bundle the color actions
ActionList draw = new ActionList();
//MAD - changing the size of the nodes dependent on the weight of the people
final DataSizeAction dsa = new DataSizeAction("graph.nodes","size");
draw.add(dsa);
draw.add(nText);
draw.add(new FontAction("graph.nodes", FontLib.getFont("Tahoma",Font.BOLD, 12)));
draw.add(nEdges);
vis.putAction("draw", draw);
ActionList layout = new ActionList(Activity.DEFAULT_STEP_TIME);
BalloonTreeLayout balloonlayout = new BalloonTreeLayout("graph",50);
layout.add(balloonlayout);
Display d = new Display(vis);
vis.putAction("layout", layout);
// start up the animated layout
vis.run("draw");
vis.run("layout");
d.addControlListener(new DragControl());
// pan with left-click drag on background
d.addControlListener(new PanControl());
// zoom with right-click drag
d.addControlListener(new ZoomControl());
// -- 6. launch the visualization -------------------------------------
// create a new window to hold the visualization
JFrame frame = new JFrame("prefuse example");
// ensure application exits when window is closed
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(d);
frame.pack(); // layout components in window
frame.setVisible(true); // show the window
}
}
`
Can anyone please let me know how to customize the image sizes / renders insuch way that images won't overlapped.
Thanks
R.Ravikumar
