SWT Browser and Image Capture

Recently I was playing with the SWT-COM bridge and its Win32 APIs. Believe me or not, but the SWT Browser is the best SWT based UI control I have seen (you can argue but without any success). 

One of the experimental feature I tried accomplishing was to print the full HTML page as Image, and the result was superb !!

See the below images for the embedded browser control and the output of the image capturing utility !! Cool right ;)

Modified Browser Control:

Captured Image:

SWT - Capturing Control Screen-Shot

SWT code for capturing control screen-shot.

public class ScreenCaptureTest 
{
 public static void main(String[] args) 
 {
  String[] names  = {"Harry", "Sally", "Jhon", "Tim", "Scott"};
  String[] msg = {"Hello World!", "Today is a nice day to walk", "I am bored", "This is how you take widget capture", "Ha Ha Ha!! That's funny !"}; 
  
  final Display display = new Display();
  final Shell shell = new Shell(display);
  shell.setText("Screen Capture");
  shell.setLayout(new GridLayout(1, true));
  
  final Composite composite = new Composite(shell, SWT.BORDER);
  composite.setLayout(new GridLayout(2, true));
  composite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  
  Table table = new Table(composite, SWT.BORDER|SWT.V_SCROLL|SWT.H_SCROLL|SWT.FULL_SELECTION);
  
  table.setLinesVisible(true);
  table.setHeaderVisible(true);
  
  table.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  
  TableColumn columnName = new TableColumn(table, SWT.LEFT);
  columnName.setText("Name");
  columnName.setWidth(100);
  
  TableColumn columnMsg = new TableColumn(table, SWT.LEFT);
  columnMsg.setText("Message");
  columnMsg.setWidth(200);
  
  for (int i = 0; i < 5; i++) 
  {
   TableItem item = new TableItem(table, SWT.NONE, 0);
   item.setText(0, names[i]);
   item.setText(1, msg[i]);   
  }
  
  StyledText text = new StyledText (composite, SWT.BORDER);
  text.setText("0123456789 ABCDEFGHIJKLM NOPQRSTUVWXYZ");
  text.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
  
  StyleRange style1 = new StyleRange();
  style1.start = 0;
  style1.length = 10;
  style1.fontStyle = SWT.BOLD;
  text.setStyleRange(style1);
  
  StyleRange style2 = new StyleRange();
  style2.start = 11;
  style2.length = 13;
  style2.foreground = display.getSystemColor(SWT.COLOR_RED);
  text.setStyleRange(style2);
  
  StyleRange style3 = new StyleRange();
  style3.start = 25;
  style3.length = 13;
  style3.background = display.getSystemColor(SWT.COLOR_BLUE);
  text.setStyleRange(style3);
  
  Button button = new Button(shell, SWT.PUSH);
  button.setText("Capture");
  button.pack();

  button.addListener(SWT.Selection, new Listener()
  {
   public void handleEvent(Event event) 
   {
    GC gc = new GC(display);
    final Image image = new Image(display, shell.getBounds());
    gc.copyArea(image, shell.getBounds().x, shell.getBounds().y);
    gc.dispose();

    Shell popup = new Shell(shell);
    popup.setText("Captured Image");
    popup.addListener(SWT.Close, new Listener() {
     public void handleEvent(Event e) {
      image.dispose();
     }
    });

    Canvas canvas = new Canvas(popup, SWT.NONE);
    canvas.setBounds(0,0,image.getImageData().width, image.getImageData().height);
    canvas.addPaintListener(new PaintListener() {
     public void paintControl(PaintEvent e) {
      e.gc.drawImage(image, 0, 0);
     }
    });
    popup.pack();
    popup.open();
   }
  });
  
  shell.pack();
  shell.open();
  
  while (!shell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  
  display.dispose();
 }
}

Original Composite:

Captured Image: