Attachment 237803 Details for Bug 422772 – sample code to reproduce

Some Eclipse Foundation services are deprecated, or will be soon. Please ensure you've read this important communication.

sample code to reproduce

OwnerDrawTree.java (text/plain), 1.59 KB, created by Thomas Singer

on 2013-11-28 10:14:41 EST

(hide)

Description:

Filename:

MIME Type:

Creator: Thomas Singer

Created: 2013-11-28 10:14:41 EST

Size: 1.59 KB

patch

obsolete

>import org.eclipse.swt.*;
>import org.eclipse.swt.graphics.*;
>import org.eclipse.swt.layout.*;
>import org.eclipse.swt.widgets.*;
>
>/**
> * @author Thomas Singer
> */
>public class OwnerDrawTree {
>
>	public static void main(String[] args) {
>		final Display display = new Display();
>
>		final Shell shell = new Shell(display);
>		shell.setLayout(new FillLayout());
>		final Tree tree = new Tree(shell, SWT.BORDER | SWT.VIRTUAL);
>		final Listener listener = new Listener() {
>			@Override
>			public void handleEvent(Event event) {
>				final TreeItem item = (TreeItem)event.item;
>				final String data = (String)item.getData();
>
>				if (event.type == SWT.MeasureItem) {
>					final Point size = event.gc.textExtent(data);
>					event.width = size.x;
>					event.height = Math.max(event.height, size.y);
>				}
>				else if (event.type == SWT.EraseItem) {
>					event.detail &= ~SWT.FOREGROUND;
>				}
>				else if (event.type == SWT.PaintItem) {
>					final TextLayout layout = new TextLayout(event.display);
>					layout.setText(data);
>					layout.draw(event.gc, event.x, event.y);
>					layout.dispose();
>				}
>			}
>		};
>		tree.addListener(SWT.MeasureItem, listener);
>		tree.addListener(SWT.EraseItem, listener);
>		tree.addListener(SWT.PaintItem, listener);
>
>		new TreeItem(tree, 0).setData("first");
>		final TreeItem item = new TreeItem(tree, 0);
>		item.setData("foo\nbar");
>		new TreeItem(item, 0).setData("bazz");
>
>		shell.setSize(400, 300);
>		shell.open();
>
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch()) {
>				display.sleep();
>			}
>		}
>
>		display.dispose();
>	}
>}

Actions: View

Attachments on bug 422772: 237803 | 237804 | 237805 | 237806 | 237807 | 237808