FormLayout: center a label and single line text using a form layout
/*
* FormLayout example snippet: center a label and single line text using a form layout
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
public class Snippet69 {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
Label label = new Label(shell, SWT.NONE | SWT.BORDER);
label.setText("Name");
Text text = new Text(shell, SWT.NONE);
FormLayout layout = new FormLayout();
layout.marginWidth = layout.marginHeight = 5;
shell.setLayout(layout);
GC gc = new GC(text);
FontMetrics fm = gc.getFontMetrics();
int charWidth = fm.getAverageCharWidth();
int width = text.computeSize(charWidth * 8, SWT.DEFAULT).x;
gc.dispose();
FormData data = new FormData(width, SWT.DEFAULT);
text.setLayoutData(data);
data.left = new FormAttachment(label, 5);
data.top = new FormAttachment(label, 0, SWT.CENTER);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
Related examples in the same category
