// Class to define a dialog to choose a font import java.awt.*; import javax.swing.*; import java.awt.event.*; import javax.swing.event.*; import static Constants.SketcherConstants.*; @SuppressWarnings("serial") class FontDialog extends JDialog implements ActionListener, // For buttons etc. ListSelectionListener, // For list box ChangeListener { // For the spinner // Constructor public FontDialog(SketcherFrame window) { // Call the base constructor to create a modal dialog super(window, "Font Selection", true); font = window.getFont(); // Get the current font // Create the dialog button panel JPanel buttonPane = new JPanel(); // Create a panel to hold buttons // Create and add the buttons to the buttonPane buttonPane.add(ok = createButton("OK")); // Add the OK button buttonPane.add(cancel = createButton("Cancel")); // Add the Cancel button getContentPane().add(buttonPane, BorderLayout.SOUTH); // Add pane // Code to create the data input panel JPanel dataPane = new JPanel(); // Create the data entry panel dataPane.setBorder(BorderFactory.createCompoundBorder( // Pane border BorderFactory.createLineBorder(Color.BLACK), BorderFactory.createEmptyBorder(5, 5, 5, 5))); GridBagLayout gbLayout = new GridBagLayout(); // Create the layout dataPane.setLayout(gbLayout); // Set the pane layout GridBagConstraints constraints = new GridBagConstraints(); // Create the font choice and add it to the input panel JLabel label = new JLabel("Choose a Font"); constraints.fill = GridBagConstraints.HORIZONTAL; constraints.gridwidth = GridBagConstraints.REMAINDER; gbLayout.setConstraints(label, constraints); dataPane.add(label); // Code to set up font list choice component GraphicsEnvironment e = GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontNames = e.getAvailableFontFamilyNames(); // Get font names fontList = new JList<>(fontNames); // Create list of font names fontList.setValueIsAdjusting(true); // single event selection fontList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); fontList.setSelectedValue(font.getFontName(),true); fontList.addListSelectionListener(this); fontList.setToolTipText("Choose a font"); JScrollPane chooseFont = new JScrollPane(fontList); // Scrollable list chooseFont.setMinimumSize(new Dimension(400,100)); chooseFont.setWheelScrollingEnabled(true); // Enable mouse wheel scroll // Panel to display font sample JPanel display = new JPanel(true); fontDisplay = new JLabel("Sample Size: x X y Y z Z"); fontDisplay.setFont(font); fontDisplay.setPreferredSize(new Dimension(350,100)); display.add(fontDisplay); //Create a split pane with font choice at the top and font display at the bottom JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, true, chooseFont, display); gbLayout.setConstraints(splitPane, constraints); // Split pane constraints dataPane.add(splitPane); // Add to the data pane // Set up the size choice using a spinner JPanel sizePane = new JPanel(true); // Pane for size choices label = new JLabel("Choose point size: "); // Prompt for point size sizePane.add(label); // Add the prompt chooseSize = new JSpinner(new SpinnerNumberModel(font.getSize(), POINT_SIZE_MIN, POINT_SIZE_MAX, POINT_SIZE_STEP)); chooseSize.setValue(font.getSize()); // Set current font size chooseSize.addChangeListener(this); sizePane.add(chooseSize); // Add spinner to pane gbLayout.setConstraints(sizePane, constraints); // Set pane constraints dataPane.add(sizePane); // Add the pane // Set up style options using radio buttons bold = new JRadioButton("Bold", (font.getStyle() & Font.BOLD) > 0); italic = new JRadioButton("Italic", (font.getStyle() & Font.ITALIC) > 0); bold.addItemListener(new StyleListener(Font.BOLD)); // Add button listeners italic.addItemListener(new StyleListener(Font.ITALIC)); JPanel stylePane = new JPanel(true); // Create style pane stylePane.add(bold); // Add buttons stylePane.add(italic); // to style pane... gbLayout.setConstraints(stylePane, constraints); // Set pane constraints dataPane.add(stylePane); // Add the pane getContentPane().add(dataPane, BorderLayout.CENTER); pack(); setVisible(false); } // Create a dialog button JButton createButton(String label) { JButton button = new JButton(label); // Create the button button.setPreferredSize(new Dimension(80,20)); // Set the size button.addActionListener(this); // Listener is the dialog return button; // Return the button } // Handler for button events public void actionPerformed(ActionEvent e) { if(e.getSource()== ok) { // If it's the OK button ((SketcherFrame)getOwner()).setFont(font); // ...set selected font } else { font = ((SketcherFrame)getOwner()).getFont(); // Restore the current font fontDisplay.setFont(font); chooseSize.setValue(font.getSize()); // Restore the point size fontList.setSelectedValue(font.getName(),true); int style = font.getStyle(); bold.setSelected((style & Font.BOLD) > 0); // Restore the italic.setSelected((style & Font.ITALIC) > 0); // style options } // Now hide the dialog - for ok or cancel setVisible(false); } // List selection listener method public void valueChanged(ListSelectionEvent e) { if(!e.getValueIsAdjusting()) { font = new Font(fontList.getSelectedValue(), font.getStyle(), font.getSize()); fontDisplay.setFont(font); fontDisplay.repaint(); } } // Handle spinner state change events public void stateChanged(ChangeEvent e) { int fontSize = ((Number)(((JSpinner)e.getSource()).getValue())).intValue(); font = font.deriveFont((float)fontSize); fontDisplay.setFont(font); fontDisplay.repaint(); } // Iner class defining listeners for radio buttons class StyleListener implements ItemListener { public StyleListener(int style) { this.style = style; } // Event handler for font style changes public void itemStateChanged(ItemEvent e) { int fontStyle = font.getStyle(); if(e.getStateChange()==ItemEvent.SELECTED) { // If style was selected fontStyle |= style; // turn it on in the font style } else { fontStyle &= ~style; // otherwise turn it off } font = font.deriveFont(fontStyle); // Get a new font fontDisplay.setFont(font); // Change the label font fontDisplay.repaint(); // repaint } private int style; // Style for this listener } private JList fontList; // Font list private JButton ok; // OK button private JButton cancel; // Cancel button private JRadioButton bold; // Bold style button private JRadioButton italic; // Italic style button private Font font; // Currently selected font private JSpinner chooseSize; // Font size options private JLabel fontDisplay; // Font sample }