Attachment 31537 Details for Bug 120279 – Test case showing JFrame.printAll() problem.

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Test case showing JFrame.printAll() problem.

SwingImageCaptureTest.java (text/plain), 2.38 KB, created by Jeff Myers

on 2005-12-11 18:12:33 EST

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Description:

Filename:

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Creator: Jeff Myers

Created: 2005-12-11 18:12:33 EST

Size: 2.38 KB

patch

obsolete

>import java.awt.BorderLayout;
>import java.awt.Color;
>import java.awt.FlowLayout;
>import java.awt.Graphics;
>import java.awt.Image;
>import java.awt.event.ActionEvent;
>import java.awt.event.ActionListener;
>import java.awt.image.BufferedImage;
>import java.awt.image.ColorModel;
>
>import javax.swing.ImageIcon;
>import javax.swing.JButton;
>import javax.swing.JFrame;
>import javax.swing.JLabel;
>
>
>public class SwingImageCaptureTest {
>
>	private Image capturedImage = null;
>	private JLabel imageLabel = null;
>	
>	private JFrame childWindow = null;
>	
>	public SwingImageCaptureTest()
>	{
>		JFrame mainWindow = new JFrame("Host");
>		mainWindow.setSize(500,500);
>		mainWindow.setLocation(50,50);
>		mainWindow.getContentPane().setLayout(new BorderLayout());
>		JButton printButton = new JButton("Print child window");
>		mainWindow.getContentPane().add(printButton, BorderLayout.SOUTH);
>		imageLabel = new JLabel();
>		imageLabel.setHorizontalAlignment(JLabel.CENTER);
>		imageLabel.setVerticalAlignment(JLabel.CENTER);
>		mainWindow.getContentPane().add(imageLabel, BorderLayout.CENTER);
>		mainWindow.getContentPane().setBackground(Color.BLUE);
>		
>		mainWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>		
>		childWindow = new JFrame("Child Window");
>		childWindow.setSize(250,250);
>		childWindow.setLocation(500,500);
>		childWindow.getContentPane().setLayout(new FlowLayout());
>		childWindow.getContentPane().add(new JButton("Button"));
>		
>		childWindow.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
>		
>		printButton.addActionListener(new ActionListener() {
>			public void actionPerformed(ActionEvent arg0) {
>				ColorModel cm = childWindow.getColorModel();
>				
>				capturedImage = new BufferedImage(cm, cm.createCompatibleWritableRaster(childWindow.getWidth(), childWindow.getHeight()), cm.isAlphaPremultiplied(), null);
>				if (capturedImage != null)
>				{
>					imageLabel.setText(null);
>					Graphics graphics = capturedImage.getGraphics();
>					graphics.setColor(Color.BLACK);
>					graphics.fillRect(0, 0, childWindow.getWidth(), childWindow.getHeight());
>					childWindow.printAll(graphics);
>					imageLabel.setIcon(new ImageIcon(capturedImage));	
>				}
>				else
>				{
>					imageLabel.setIcon(null);
>					imageLabel.setText("Error capturing window");
>				}
>			}
>		});
>		
>		mainWindow.setVisible(true);
>		childWindow.setVisible(true);
>	}
>	
>	/**
>	 * @param args
>	 */
>	public static void main(String[] args) {
>		new SwingImageCaptureTest();
>	}
>
>}

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Attachments on bug 120279: 31536 | 31537 | 33036