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349 lines
9.9 KiB
Java
349 lines
9.9 KiB
Java
Paint Shapes and Text of different colors and fonts
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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import javax.swing.event.*;
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public class Painter2 extends JFrame {
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private int topX, topY, width, fontSize,
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height, bottomX, bottomY, shape;
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private boolean clear, textOn, filled;
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private Color drawingColor;
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private String font;
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private JTextField text;
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private JPanel panel1, panel2, panel3, panel4;
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private JRadioButton ovalBox, rectBox, lineBox;
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private ButtonGroup shapeGroup;
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private JCheckBox fillBox;
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private JComboBox colorList, fontList, sizeList;
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private JButton clearButton;
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private String colorNames[] = { "Black", "Green", "Blue",
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"Red", "Cyan" };
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private Color colors[] = { Color.black, Color.green, Color.blue,
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Color.red, Color.cyan };
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private String fontNames[] = { "Serif", "SansSerif", "Monospaced" };
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private String sizeNames[] = { "9", "10", "22", "72" };
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private int sizes[] = { 9, 10, 22, 72 };
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private final int OVAL = 1, LINE = 2, RECT = 3;
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private ToolWindow tools;
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// Painter2 constructor
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public Painter2()
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{
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super( "Painting Window" );
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addMouseListener( new MouseHandler() );
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// set defaults for painting
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drawingColor = Color.black;
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shape = OVAL;
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font = "Serif";
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fontSize = 9;
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setDefaultCloseOperation( EXIT_ON_CLOSE );
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setBackground( Color.white );
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setSize( 300, 300 );
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show();
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// create new ToolWindow
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tools = new ToolWindow();
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} // end constructor
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// paint the new window. super is not called so
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// that the previous images will not be erased.
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public void paint( Graphics g )
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{
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g.setColor( drawingColor );
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// draw text
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if ( textOn ) {
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g.setFont( new Font( font, Font.PLAIN, fontSize ) );
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g.drawString( text.getText(), topX, topY );
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textOn = false;
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return;
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} // end if statement
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// set shape's top left coordinates
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if ( shape != LINE ) {
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topX = Math.min( topX, bottomX );
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topY = Math.min( topY, bottomY );
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} // end if statement
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// draw filled shape
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if ( filled && shape != LINE )
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switch ( shape ) {
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case OVAL:
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g.fillOval( topX, topY, width, height );
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break;
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case RECT:
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g.fillRect( topX, topY, width, height );
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break;
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} // end switch statement
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// draw unfilled shapes
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else
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switch ( shape ) {
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case OVAL:
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g.drawOval( topX, topY, width, height );
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break;
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case LINE:
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g.drawLine( topX, topY, bottomX, bottomY );
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break;
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case RECT:
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g.drawRect( topX, topY, width, height );
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break;
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} // ens switch statement
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// clear background
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if ( clear == true ) {
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g.setColor( Color.white );
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g.fillRect( 0, 0, getSize().width, getSize().height );
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clear = false;
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} // end if statement
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} // end method paint
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// inner class for window containing GUI
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private class ToolWindow extends JFrame {
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// ToolWindow constructor
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public ToolWindow()
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{
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super( "Tool Window" );
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// set up to edit text
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text = new JTextField( "Text", 25 );
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text.addActionListener(
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// anonymous inner class to handle text drawing
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new ActionListener () {
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public void actionPerformed( ActionEvent event )
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{
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textOn = true;
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repaint();
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} // end actionPerformed method
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} // end anonymous inner class
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); // end call to addActionListener
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// set up to choose font
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fontList = new JComboBox( fontNames );
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fontList.setMaximumRowCount( 3 );
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fontList.addItemListener(
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// anonymous inner class to select font
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new ItemListener() {
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// change font
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public void itemStateChanged( ItemEvent event )
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{
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font =
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fontNames[ fontList.getSelectedIndex() ];
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} // end itemStateChanged method
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} // end anonymous inner class
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); // end call to addItemListener
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// set up to choose font size
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sizeList = new JComboBox( sizeNames );
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sizeList.setMaximumRowCount( 3 );
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sizeList.addItemListener(
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// anonymous inner class to select font size
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new ItemListener() {
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// change font size
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public void itemStateChanged( ItemEvent event )
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{
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fontSize =
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sizes[ sizeList.getSelectedIndex() ];
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} // end itemStateChanged method
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} // end anonymous inner class
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); // end call to addItemListener
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// set up to choose color
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colorList = new JComboBox( colorNames );
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colorList.setMaximumRowCount( 3 );
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colorList.addItemListener(
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// anonymous inner class to select color
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new ItemListener() {
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// change color
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public void itemStateChanged( ItemEvent event )
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{
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drawingColor =
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colors[ colorList.getSelectedIndex() ];
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} // end itemStateChanged method
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} // end anonymous inner class
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); // end call to addItemListener
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// set up clear button
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clearButton = new JButton( "Clear" );
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clearButton.addActionListener(
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new ClearButtonHandler() );
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// set up to choose filled
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fillBox = new JCheckBox( "Filled" );
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FillBoxHandler fillHandle = new FillBoxHandler();
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fillBox.addItemListener( fillHandle );
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// set up to choose shapes
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ovalBox = new JRadioButton( "Oval", true );
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lineBox = new JRadioButton( "Line", false );
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rectBox = new JRadioButton( "Rectangle", false );
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RadioButtonHandler handler = new RadioButtonHandler();
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ovalBox.addItemListener( handler );
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lineBox.addItemListener( handler );
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rectBox.addItemListener( handler );
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shapeGroup = new ButtonGroup();
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shapeGroup.add(ovalBox);
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shapeGroup.add(lineBox);
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shapeGroup.add(rectBox);
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// set up GUI layout
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panel1 = new JPanel();
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panel2 = new JPanel();
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panel3 = new JPanel();
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panel4 = new JPanel();
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panel1.setLayout( new GridLayout( 1, 4 ) );
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panel2.setLayout( new GridLayout( 1, 3 ) );
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panel3.setLayout( new FlowLayout() );
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panel4.setLayout( new FlowLayout() );
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panel1.add( ovalBox );
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panel1.add( lineBox );
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panel1.add( rectBox );
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panel1.add( fillBox );
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panel2.add( new JScrollPane( colorList ) );
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panel2.add( new JScrollPane( fontList ) );
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panel2.add( new JScrollPane( sizeList ) );
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panel3.add( text );
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panel4.add( clearButton );
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Container container = getContentPane();
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container.setLayout( new FlowLayout() );
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container.add( panel1 );
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container.add( panel2 );
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container.add( panel3 );
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container.add( panel4 );
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setDefaultCloseOperation( EXIT_ON_CLOSE );
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setSize( 350, 175 );
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setLocation( 300, 0 );
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setVisible( true );
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} // end ToolWindow constructor
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} // end inner class ToolWindow
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// set coordinate and dimension values
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private class MouseHandler extends MouseAdapter {
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public void mousePressed( MouseEvent event )
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{
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topX = event.getX();
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topY = event.getY();
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} // end mousePressed method
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public void mouseReleased( MouseEvent event )
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{
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bottomX = event.getX();
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bottomY = event.getY();
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width = Math.abs( topX - bottomX );
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height = Math.abs( topY - bottomY );
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repaint();
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} // end mouseReleased method
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} // end inner class MouseHandler
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// clear background
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private class ClearButtonHandler implements ActionListener {
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public void actionPerformed( ActionEvent event )
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{
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clear = true;
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repaint();
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} // end actionPerformed method
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} // end inner class ClearButtonHandler
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// determine which type of shape to draw
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private class RadioButtonHandler implements ItemListener {
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public void itemStateChanged( ItemEvent event )
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{
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if ( event.getSource() == ovalBox )
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shape = OVAL;
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else if ( event.getSource() == lineBox )
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shape = LINE;
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else if ( event.getSource() == rectBox )
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shape = RECT;
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} // end itemStateChanged method
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} // end inner class RadioButtonHandler
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// determine if shape should be filled
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private class FillBoxHandler implements ItemListener {
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public void itemStateChanged( ItemEvent event )
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{
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if ( event.getStateChange() == ItemEvent.SELECTED )
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filled = true;
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else
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filled = false;
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} // end ItemStateChanged method
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} // end inner class FillBoxHandler
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// execute application
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public static void main( String args[] )
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{
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Painter2 application = new Painter2();
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application.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
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} // end main method
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} // end class Painter2
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