/* Calculator Homework #4 Java GUI Programming using AWT, JFC and Swing basic extension of the java.applet.Applet class Author: Jeffrey Rodriguez This calculator works as Homework3 Calculator but it is implemented in Swing **/ import java.awt.*; import java.awt.event.*; import javax.swing.*; /* Swing Calculator. **/ public class Calculatorx extends JApplet { private final static int JButtonWIDTH = 60; private final static int JButtonHEIGHT = 52; private final static String functionName[] = { "Hyp", "Mod", "AND", "Sin", "+/-", "OR", "Cos", "1/x", "NOT", "Tan", "x!", "<", "Log", "X^2", ">", "Ln", "x^y", ">>", "Inv", "EE", "%"}; private final static String calcNumber[] = { "A", "B", "C", "Clr", "AC", "D", "E", "F", "(", ")", "7", "8", "9", "x", "M-", "4", "5", "6", "/", "M+", "1", "2", "3", "+", "MR", "", "0", "=", "-", "MC"}; private final static String baseNumber[] = { "Hex", "Dec", "Oct", "Bin"}; private final static String angleType[] = { "Deg", "Rad", "Gra"}; private static String _numberBase = baseNumber[1]; // Dec base default final JTextField calculatorInput = new JTextField(); Calculatorx calc; public Calculatorx() { JPanel functions = new JPanel(); JButton functionJButton[] = new JButton[21]; int deltx = 56; int delty = 30; Container contentPane = getContentPane(); contentPane.setLayout(null); contentPane.setBackground(new Color(216,182,163)); contentPane.setSize(460,450); functions.setLayout(new GridLayout(7,4,5,5)); contentPane.add(functions); functions.setBounds(18,82,156,270); int positionX = 0; int positionY = 0; Font font = new Font("Dialog", Font.PLAIN, 10); for ( int i = 0 ; i < functionJButton.length; i++ ) { functionJButton[i] = new JButton(functionName[i]); functionJButton[i].setFont( font ); if ( functionName[i].equals( "+/-" ) ) { functionJButton[i].addActionListener( new ActionListener() { public void actionPerformed( ActionEvent e ) { String calcBase = getCalculatorBase(); StringDisplay display = null; String cmd = e.getActionCommand(); System.out.println( "JButton event" + e ); if ( calcBase.equals( "Dec" ) ) // Floating point buffer display = StringDisplay.getInstance( true ); else display = StringDisplay.getInstance( false ); // integer buffer if ( cmd.equals( "+/-" ) ) { System.out.println( "Hit +/-" ); if ( calcBase.equals( "Dec" ) ) { Double fValue = Double.valueOf( display.getStringDisplay() ); double dispValue = (double ) ( fValue.doubleValue() ) * -1.0; display.deleteAll(); } else { Integer iValue = Integer.valueOf( display.getStringDisplay() ); int dispValue = iValue.intValue() * -1; display.deleteAll(); } display.add( '-' ); } } }); } functions.add( functionJButton[i] ); functionJButton[i].setBackground( Color.lightGray ); functionJButton[i].setBounds( positionX, positionY, JButtonHEIGHT, JButtonWIDTH ); if ( ( (i+1) % 3 ) == 0 ) { positionX = 0; positionY += delty; } else { positionX += deltx; } } JButton calculatorJButton[] = new JButton[30]; JPanel calculatorFuncts = new JPanel(); calculatorFuncts.setLayout(new GridLayout(6,6,5,5)); contentPane.add(calculatorFuncts); calculatorFuncts.setBounds(180,82,264,234); for ( int i = 0 ; i < calculatorJButton.length; i++ ) { calculatorJButton[i] = new JButton(calcNumber[i]); calculatorJButton[i].setFont( font ); calculatorJButton[i].addActionListener( new ActionListener( ) { public void actionPerformed( ActionEvent e ) { String calcBase = getCalculatorBase(); StringDisplay display = null; String cmd = e.getActionCommand(); System.out.println( "JButton event" + e ); if ( calcBase.equals( "Dec" ) ) // Floating point buffer display = StringDisplay.getInstance( true ); else display = StringDisplay.getInstance( false ); // integer buffer if ( cmd.equals( "Clr" ) ) { display.delete(); calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.getCursor() ); } else if ( cmd.equals( "AC" ) ) { display.deleteAll(); calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.length() ); } else if ( cmd.equals( "1" ) || cmd.equals( "2" ) || cmd.equals( "3" ) || cmd.equals( "4" ) || cmd.equals( "5" ) || cmd.equals( "6" ) || cmd.equals( "7" ) || cmd.equals( "8" ) || cmd.equals( "9" ) || cmd.equals( "0" ) || cmd.equals( "A" ) || cmd.equals( "B" ) || cmd.equals( "C" ) || cmd.equals( "D" ) || cmd.equals( "E" ) || cmd.equals( "F" ) ) { char typeChar = cmd.charAt( 0 ); //System.out.println( "Char = " + typeChar ); if ( calcBase.equals( "Dec" ) ) { display = StringDisplay.getInstance( true ); if ( typeChar >= '0' && typeChar <= '9' ) { if ( display.getCursor() >5 ) display.add( typeChar );//Otherwise ignore more input } } else { display = StringDisplay.getInstance( false ); if ( calcBase.equals( "Bin" ) ) { if ( typeChar >= '0' && typeChar <= '1' ) { if ( display.getCursor() > 5 ) display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } else if ( calcBase.equals( "Oct" ) ) { if ( typeChar >= '0' && typeChar <= '7' ) { if ( ( display.length() - display.getCursor() ) < 12 ) // only 12 Oct allowed display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } else if ( calcBase.equals( "Hex" ) ) { if ( ( typeChar >= '0' && typeChar <= '9' ) || ( typeChar >= 'A' && typeChar <= 'F' ) || ( typeChar >= 'a' && typeChar <= 'f' ) ) { if ( ( display.length() - display.getCursor() ) < 8 ) // only 8 Hex allowed display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } } calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.getCursor() ); calculatorInput.requestFocus(); } } } ); calculatorFuncts.add( calculatorJButton[i] ); calculatorJButton[i].setBackground( Color.lightGray ); calculatorJButton[i].setBounds( positionX, positionY, JButtonHEIGHT, JButtonWIDTH ); if ( ( (i+1) % 6 ) == 0 ) { positionX = 0; positionY += delty; } else { positionX += deltx; } } RadioButtonPanel basePanel = new RadioButtonPanel( baseNumber, "Dec", new ActionListener() { public void actionPerformed( ActionEvent e ) { calc.setCalculatorBase( ( String) e.getActionCommand() ); System.out.println( "Just called setCalculatorBase" ); } }, new Rectangle( 4,46,222,24 ) ); contentPane.add( basePanel ); RadioButtonPanel anglePanel = new RadioButtonPanel( angleType, "Deg", null, new Rectangle( 264,46,168,24 ) ); contentPane.add( anglePanel ); JTextField bottom1 = new JTextField(); JTextField bottom2 = new JTextField(); JTextField bottom3 = new JTextField(); contentPane.add(bottom1); bottom1.setBounds(18,376,66,24); contentPane.add(bottom2); bottom2.setBounds(90,376,96,24); contentPane.add(bottom3); bottom3.setBounds(192,376,240,24); calculatorInput.setColumns( 36 ); contentPane.add(calculatorInput); calculatorInput.setBounds(198,10,240, 24 ); calculatorInput.setBackground(new Color(190,190,190)); calculatorInput.addKeyListener( new KeyAdapter() { public void keyPressed( KeyEvent e) { char typedChar = e.getKeyChar(); int keyCode = e.getKeyCode(); String keyText = KeyEvent.getKeyText( keyCode ); String calcBase = getCalculatorBase(); StringDisplay display = null; System.out.println( "Calcbase.keyprss = " + calcBase ); System.out.println( "keyText.keyprss = " + keyText ); if ( calcBase.equals( "Dec" ) ) // Floating point buffer display = StringDisplay.getInstance( true ); else display = StringDisplay.getInstance( false ); // integer buffer if ( keyText.equals( "Backspace" ) || keyText.equals( "Left" ) ) { display.delete(); calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.getCursor() ); } else if ( keyText.equals( "Delete" ) ) { display.deleteAll(); calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.length() ); } e.consume(); } public void keyReleased( KeyEvent e ) { e.consume(); } public void keyTyped( KeyEvent e ) { char typeChar = e.getKeyChar(); String calcBase = getCalculatorBase(); StringDisplay display = null; System.out.println( "Calcbase = " + calcBase ); if ( calcBase.equals( "Dec" ) ) { display = StringDisplay.getInstance( true ); if ( typeChar >= '0' && typeChar <= '9' ) { if ( display.getCursor() >5 ) display.add( typeChar );//Otherwise ignore more input } } else { display = StringDisplay.getInstance( false ); if ( calcBase.equals( "Bin" ) ) { if ( typeChar >= '0' && typeChar <= '1' ) { if ( display.getCursor() > 5 ) display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } else if ( calcBase.equals( "Oct" ) ) { if ( typeChar >= '0' && typeChar <= '7' ) { if ( ( display.length() - display.getCursor() ) < 12 ) // only 12 Oct allowed display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } else if ( calcBase.equals( "Hex" ) ) { if ( ( typeChar >= '0' && typeChar <= '9' ) || ( typeChar >= 'A' && typeChar <= 'F' ) || ( typeChar >= 'a' && typeChar <= 'f' ) ) { if ( ( display.length() - display.getCursor() ) < 8 ) // only 8 Hex allowed display.add( typeChar ); else { display.deleteAll(); display.writeString( "Result_is_too_large_" ); } } } } calculatorInput.setText( display.getStringDisplay() ); calculatorInput.setCaretPosition( display.getCursor() ); e.consume(); } } ); } public String getCalculatorBase() { return _numberBase; } public void init() { calc = new Calculatorx(); } public static void main( String[] args ) { //Calculatorx calc = new Calculatorx(); JFrame f = new JFrame( "Swing - Calculator Homework" ); JApplet applet = new Calculatorx(); applet.init(); f.setContentPane( applet.getContentPane() ); f.setBounds( 100, 100, 508, 500 ); f.setTitle( "Calculator" ); f.setVisible( true ); f.setDefaultCloseOperation( WindowConstants.DISPOSE_ON_CLOSE ); f.addWindowListener( new WindowAdapter() { public void windowClosed( WindowEvent e ) { System.exit( 0 ); } } ); } public synchronized void setCalculatorBase( String numberBase ) { System.out.println( "Numberbase = " + numberBase); _numberBase = numberBase; } public void start() { calc.setVisible( true ); } public class RadioButtonPanel extends JPanel { public RadioButtonPanel( String[] arrayOfButtonsNames, String defaultChoice, ActionListener listener, Rectangle rect ) { setLayout( new GridLayout( 1, arrayOfButtonsNames.length, 0, 0 )); // Set layout tp GridLayout setBounds( rect.x, rect.y, rect.width, rect.height ); JRadioButton baseNumberChk[] = new JRadioButton[arrayOfButtonsNames.length]; // Declare radio button ButtonGroup baseNumberGroup = new ButtonGroup(); //Instantiate Button Group for ( int i = 0; i< arrayOfButtonsNames.length; i++ ) { // Base Number baseNumberChk[i] = new JRadioButton( arrayOfButtonsNames[i] ); if ( arrayOfButtonsNames[i].equals( defaultChoice ) ) baseNumberChk[i].setSelected( true ); baseNumberGroup.add( baseNumberChk[i] ); // Add button to group if ( listener != null ) baseNumberChk[i].addActionListener( listener ); //Add listener add( baseNumberChk[i] ); // Add button to panel } } } }