Control Size Location
/******************************************************************************
* Copyright (c) 1998, 2004 Jackwind Li Guojie
* All right reserved.
*
* Created on Jan 23, 2004 11:26:26 PM by JACK
* $Id$
*
* visit: http://www.asprise.com/swt
*****************************************************************************/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
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 ControlSizeLocation {
Display display = new Display();
Shell shell = new Shell(display);
Button button;
Text x;
Text y;
Text h;
Text w;
Button get;
Button set;
public ControlSizeLocation() {
init();
shell.pack();
shell.open();
//textUser.forceFocus();
// Set up the event loop.
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
// If no more entries in event queue
display.sleep();
}
}
display.dispose();
}
private void init() {
GridLayout gridLayout = new GridLayout(2, true);
shell.setLayout(gridLayout);
Composite left = new Composite(shell, SWT.NULL);
left.setLayout(new GridLayout());
//left.setLayout(new FillLayout());
left.setLayoutData(new GridData(GridData.FILL_BOTH));
left.setBackground(display.getSystemColor(SWT.COLOR_GREEN));
button = new Button(left, SWT.PUSH);
button.setText("Button");
button.setLayoutData(new GridData());
Composite right = new Composite(shell, SWT.NULL);
right.setLayout(new GridLayout(4, true));
right.setLayoutData(new GridData(GridData.FILL_BOTH));
Label label = new Label(right, SWT.NULL);
label.setText("X");
label = new Label(right, SWT.NULL);
label.setText("Y");
label = new Label(right, SWT.NULL);
label.setText("Width");
label = new Label(right, SWT.NULL);
label.setText("Height");
x = new Text(right, SWT.BORDER);
y = new Text(right, SWT.BORDER);
w = new Text(right, SWT.BORDER);
h = new Text(right, SWT.BORDER);
SelectionListener selectionListener = new SelectionListener() {
public void widgetSelected(SelectionEvent e) {
Button b = (Button) e.widget;
if (b == get) {
System.out.println("------------------------------");
System.out.println("getBounds: " + button.getBounds());
System.out.println("getLocation: " + button.getLocation());
System.out.println("getSize: " + button.getSize());
}else if(b == set) {
int vx = getNumber(x);
int vy = getNumber(y);
int vw = getNumber(w);
int vh = getNumber(h);
if(vx != -1 && vy != -1) {
if(vw != -1 && vh != -1) {
Rectangle rectangle = new Rectangle(vx, vy, vw, vh);
button.setBounds(rectangle);
System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
System.out.println("# setBounds: " + rectangle);
}else{
Point point = new Point(vx, vy);
button.setLocation(point);
System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
System.out.println("# setLocation: " + point);
}
}else if(vw != -1 && vh != -1) {
Point point = new Point(vw, vh);
button.setSize(point);
System.out.println("~~~~~~~~~~~~~~~~~~~~~~~~~~~~");
System.out.println("# setSize: " + point);
}
}
}
public void widgetDefaultSelected(SelectionEvent e) {
// TODO Auto-generated method stub
}
};
get = new Button(right, SWT.PUSH);
get.setText("Get");
get.addSelectionListener(selectionListener);
set = new Button(right, SWT.PUSH);
set.setText("Set");
set.addSelectionListener(selectionListener);
}
/**
*
* @param text
* @return <code>-1</code> if invalid.
*/
private int getNumber(Text text) {
if(text == null)
return -1;
String value = text.getText();
if(value == null || value.trim().length() == 0)
return -1;
try {
return Integer.parseInt(value.trim());
}catch(Exception e) {
}
return -1;
}
public static void main(String[] args) {
new ControlSizeLocation();
}
}
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