/* * Picture.java is used by the 1.4 * TrackFocusDemo.java and DragPictureDemo.java examples. */ import javax.swing.InputMap; import javax.swing.KeyStroke; import javax.swing.Action; import javax.swing.JComponent; import javax.accessibility.Accessible; import java.beans.*; import java.awt.*; import java.awt.event.*; class Picture extends JComponent implements MouseListener, FocusListener, Accessible { Image image; public Picture(Image image) { this.image = image; setFocusable(true); addMouseListener(this); addFocusListener(this); } public void mouseClicked(MouseEvent e) { //Since the user clicked on us, let's get focus! requestFocusInWindow(); } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void focusGained(FocusEvent e) { //Draw the component with a red border //indicating that it has focus. this.repaint(); } public void focusLost(FocusEvent e) { //Draw the component with a black border //indicating that it doesn't have focus. this.repaint(); } protected void paintComponent(Graphics graphics) { Graphics g = graphics.create(); //Draw in our entire space, even if isOpaque is false. g.setColor(Color.WHITE); g.fillRect(0, 0, image == null ? 125 : image.getWidth(this), image == null ? 125 : image.getHeight(this)); if (image != null) { //Draw image at its natural size of 125x125. g.drawImage(image, 0, 0, this); } //Add a border, red if picture currently has focus if (isFocusOwner()) { g.setColor(Color.RED); } else { g.setColor(Color.BLACK); } g.drawRect(0, 0, image == null ? 125 : image.getWidth(this), image == null ? 125 : image.getHeight(this)); g.dispose(); } }