org.eclipse.swt.snippets.Snippet55.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet55.java

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/*******************************************************************************
 * Copyright (c) 2000, 2011 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;

/*
 * Text example snippet: resize a text control (show about 10 characters)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 */
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;

public class Snippet55 {

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 55");
        Text text = new Text(shell, SWT.BORDER);
        text.setFont(new Font(display, "Courier", 13, SWT.NORMAL)); // Use a fixed size font
        Rectangle clientArea = shell.getClientArea();
        text.setLocation(clientArea.x, clientArea.y);
        int columns = 10;
        GC gc = new GC(text);
        FontMetrics fm = gc.getFontMetrics();
        int width = (int) (columns * fm.getAverageCharacterWidth());
        int height = fm.getHeight();
        gc.dispose();
        text.setSize(text.computeSize(width, height));
        shell.pack();
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}