Source Code : Draw Text Demo

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Draw Text Demo

 
/******************************************************************************
 * 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 = "u4e2du6587u6c49u5b57u6d4bu8bd5";
        
        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();
  }
}
           
         
  

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