Attachment 278188 Details for Bug 546248 – Sample code to reproduce

Sample code to reproduce

RepaintEvents.java (text/plain), 1.42 KB, created by Thomas Singer

on 2019-04-09 10:32:20 EDT

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Filename:

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Creator: Thomas Singer

Created: 2019-04-09 10:32:20 EDT

Size: 1.42 KB

patch

obsolete

>import java.text.*;
>import java.util.*;
>import java.util.List;
>
>import org.eclipse.swt.*;
>import org.eclipse.swt.layout.*;
>import org.eclipse.swt.widgets.*;
>
>public class RepaintEvents {
>
>	public static void main(String[] args) {
>		final Display display = new Display();
>
>		final StringBuilder buffer = new StringBuilder();
>
>		final int period = 250;
>		display.timerExec(period, new Runnable() {
>			@Override
>			public void run() {
>				if (buffer.length() > 0) {
>					System.out.println(DateFormat.getTimeInstance().format(new Date()) + ": " + buffer);
>					buffer.setLength(0);
>				}
>				if (!display.isDisposed()) {
>					display.timerExec(period, this);
>				}
>			}
>		});
>
>		final Shell shell = new Shell(display);
>		shell.setLayout(new FillLayout());
>
>		final Composite composite = new Composite(shell, SWT.DOUBLE_BUFFERED | SWT.V_SCROLL);
>		final Listener listener = event -> {
>			if (event.type == SWT.Paint) {
>				buffer.append('p');
>				event.gc.drawText("Hello world", 0, 0);
>			}
>			else if (event.type == SWT.MouseMove) {
>				buffer.append('m');
>			}
>			else if (event.type == SWT.MouseHover) {
>				buffer.append('h');
>			}
>		};
>		composite.addListener(SWT.Paint, listener);
>		composite.addListener(SWT.MouseMove, listener);
>		composite.addListener(SWT.MouseHover, listener);
>
>		shell.setSize(400, 300);
>		shell.open();
>
>		while (!shell.isDisposed()) {
>			if (!display.readAndDispatch()) {
>				display.sleep();
>			}
>		}
>
>		display.dispose();
>	}
>}

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Attachments on bug 546248: 278188