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| package test;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.events.ControlEvent;
import org.eclipse.swt.events.ControlListener;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
public class LayoutTest {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
ScrolledComposite container = new ScrolledComposite(shell, SWT.V_SCROLL);
container.setExpandHorizontal(true);
container.setAlwaysShowScrollBars(true);
final Composite composite = new Composite(container, SWT.NONE);
composite.setLayout(new GridLayout(1, false));
Label label = new Label(composite, SWT.NONE);
label.setText("Test case");
label.setBackground(display.getSystemColor(SWT.COLOR_WHITE));
GridData gridData = new GridData();
gridData.grabExcessHorizontalSpace = true;
gridData.horizontalAlignment = SWT.FILL;
label.setLayoutData(gridData);
final Widget widget = new Widget(composite, SWT.NONE);
gridData = new GridData();
gridData.grabExcessHorizontalSpace = true;
gridData.horizontalAlignment = SWT.FILL;
widget.setLayoutData(gridData);
widget.addPaintListener(new PaintListener() {
@Override
public void paintControl(PaintEvent event) {
System.out.println(widget.getSize());
}
});
widget.addControlListener(new ControlListener() {
@Override
public void controlResized(ControlEvent event) {
composite.pack();
}
@Override
public void controlMoved(ControlEvent arg0) {
// TODO Auto-generated method stub
}
});
container.setContent(composite);
composite.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private static class Widget extends Canvas {
public Widget(Composite parent, int style) {
super(parent, style);
setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_RED));
}
@Override
public Point computeSize(int wHint, int hHint, boolean changed) {
int width = wHint;
if (wHint == SWT.DEFAULT)
width = getSize().x;
return new Point(width, width);
}
}
}
|