DrawTextDemo.java Source code

Introduction

Here is the source code for DrawTextDemo.java

Source

/******************************************************************************
 * All Right Reserved. 
 * Copyright (c) 1998, 2004 Jackwind Li Guojie
 * 
 * Created on 2004-4-19 13:48:04 by JACK
 * $Id$
 * 
 *****************************************************************************/

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class DrawTextDemo {
    Display display = new Display();
    Shell shell = new Shell(display);

    public DrawTextDemo() {
        shell.setLayout(new FillLayout());

        final Canvas canvas = new Canvas(shell, SWT.NO_BACKGROUND);

        final Image image = new Image(display, "java2s.gif");
        canvas.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                Rectangle size = image.getBounds();
                // Draws the background image.
                e.gc.drawImage(image, 0, 0, size.width, size.height, 0, 0, canvas.getSize().x, canvas.getSize().y);

                Font font = new Font(display, "Tahoma", 18, SWT.BOLD);
                e.gc.setFont(font);
                e.gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE));
                e.gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));

                String english = "SWT rocks!";
                String chinese = "\u4e2d\u6587\u6c49\u5b57\u6d4b\u8bd5";

                e.gc.drawString(english, 10, 10);
                e.gc.drawString(chinese, 10, 80, true);

                String text = "Text to be drawn in the center";
                Point textSize = e.gc.textExtent(text);
                e.gc.drawText(text, (canvas.getSize().x - textSize.x) / 2, (canvas.getSize().y - textSize.y) / 2);

                font.dispose();
            }
        });

        shell.setSize(300, 150);
        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() {

    }

    public static void main(String[] args) {
        new DrawTextDemo();
    }
}