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Home » Eclipse Projects » GEF » How to avoid Node overlapping in horizontal tree layout algorithm in zest(Zest Horizontal Model diagram)
How to avoid Node overlapping in horizontal tree layout algorithm in zest [message #1746159] Mon, 24 October 2016 09:47 Go to next message
surekha somisetty is currently offline surekha somisettyFriend
Messages: 18
Registered: April 2016
Junior Member
i am Generating a new Model design diagram , i am looking for horizontal flow diagram, i just tried all the way's , but still i am not get-in proper way of my data, actually we have lot's(thousands) of data , i generate an example to give below code , but my client not happy for that , if any one have idea on this model diagram please hint us,

Other wise tell me new algorithm to implement replace of zest .

My code is given below:

public class ZestView extends ViewPart {

public static String ID = "zestDemoGraph.OpenEditorView";
private Graph graph;
private int layout = 1;

public ZestView() {

public void createPartControl(Composite parent) {

Tree tree = new Tree(parent, SWT.None | SWT.MULTI);
TreeItem itemroot;
TreeItem itemchild, itemchild1, itemchild2;

graph = new Graph(parent, SWT.NONE);

for (int r = 0; r < 1; r++) {
itemroot = new TreeItem(tree, SWT.NONE);
GraphNode source = new GraphNode(graph, SWT.NONE, "Parent");
for (int j = 0; j < 1; j++) {
System.out.println("j" + j);
itemchild = new TreeItem(itemroot, SWT.NONE);
GraphNode destinantion = new GraphNode(graph, SWT.NONE,
"Child Level 1");

new GraphConnection(graph, ZestStyles.CONNECTIONS_DIRECTED,
source, destinantion);

for (int s = 0; s < 2; s++) {
System.out.println("s" + s);
itemchild1 = new TreeItem(itemchild, SWT.NONE);
GraphNode destinantion1 = new GraphNode(
"Child Level 2 ");

new GraphConnection(graph, ZestStyles.CONNECTIONS_DIRECTED,
destinantion, destinantion1);

for (int su = 0; su < 2; su++) {
System.out.println("su" + su);
itemchild2 = new TreeItem(itemchild1, SWT.NONE);
GraphNode destinantion2 = new GraphNode(graph,
"Child Level 3 ");

new GraphConnection(graph,
ZestStyles.CONNECTIONS_DIRECTED, destinantion1,


graph.setLayoutAlgorithm(new HorizontalTreeLayoutAlgorithm(
LayoutStyles.NO_LAYOUT_NODE_RESIZING), true);

graph.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent e) {



Re: How to avoid Node overlapping in horizontal tree layout algorithm in zest [message #1749052 is a reply to message #1746159] Thu, 01 December 2016 13:24 Go to previous message
Abhishek Chakraborty is currently offline Abhishek ChakrabortyFriend
Messages: 82
Registered: July 2009
Location: Cologne, Germany

Please see this solution

Abhishek Chakraborty
Previous Topic:[Zest] Suppress multi-selection on the canvas
Next Topic:[ZEST] render Composite/Nested nodes using Zest
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