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Collection.ctxt

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+#BlueJ class context
+comment0.target=Collection
+comment0.text=\r\n\ Write\ a\ description\ of\ class\ Collection\ here.\r\n\r\n\ @author\ (your\ name)\r\n\ @version\ (a\ version\ number\ or\ a\ date)\r\n
+comment1.params=
+comment1.target=Collection()
+comment1.text=\r\n\ Constructor\ for\ objects\ of\ class\ Collection\r\n
+comment2.params=y
+comment2.target=int\ sampleMethod(int)
+comment2.text=\r\n\ An\ example\ of\ a\ method\ -\ replace\ this\ comment\ with\ your\ own\r\n\r\n\ @param\ \ y\ \ a\ sample\ parameter\ for\ a\ method\r\n\ @return\ \ \ \ the\ sum\ of\ x\ and\ y\r\n
+numComments=3

Collection.java

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+
+/**
+ * Write a description of class Collection here.
+ *
+ * @author (your name)
+ * @version (a version number or a date)
+ */
+public class Collection
+{
+    // instance variables - replace the example below with your own
+    private int x;
+
+    /**
+     * Constructor for objects of class Collection
+     */
+    public Collection()
+    {
+        // initialise instance variables
+        x = 0;
+    }
+
+    /**
+     * An example of a method - replace this comment with your own
+     *
+     * @param  y  a sample parameter for a method
+     * @return    the sum of x and y
+     */
+    public int sampleMethod(int y)
+    {
+        // put your code here
+        return x + y;
+    }
+}

DotArt.ctxt

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+#BlueJ class context
+comment0.target=DotArt
+comment1.params=title
+comment1.target=DotArt(java.lang.String)
+comment1.text=\r\n\ Constructor\ for\ objects\ of\ class\ MyApp\r\n
+comment2.params=args
+comment2.target=void\ main(java.lang.String[])
+comment2.text=\r\n\ The\ mainline\ program.\r\n
+numComments=3

DotArt.java

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+/**
+ * 2102: DotArt class is the main program.
+ * 
+ * @author (Greg Johnson) 
+ * @version (November 1,2017)
+ */
+import java.awt.*;
+import javax.swing.*;
+
+public class DotArt extends JFrame
+{   
+    DrawingPanel _theDrawingPanel;
+
+    /**
+     * Constructor for objects of class MyApp
+     */
+    public DotArt(String title)
+    {
+        super(title);
+        this.setSize(1000, 800);
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        // create and add Panels to the Frame
+        this.add(new DrawingPanel());
+        this.setVisible(true);      
+    }
+
+    /**
+     * The mainline program.
+     */
+    public static void main(String[] args)
+    {
+        DotArt da = new DotArt("2102 Dot Art");
+    }
+}

DrawingPanel.ctxt

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+#BlueJ class context
+comment0.target=DrawingPanel
+comment1.params=
+comment1.target=DrawingPanel()
+comment1.text=\r\n\ Constructor\ for\ objects\ of\ class\ ObjectPanel\r\n
+comment2.params=aBrush
+comment2.target=void\ paintComponent(java.awt.Graphics)
+comment2.text=\r\n\ The\ paintComponent\ method\ of\ class\ DrawingPanel\ is\ responsible\ for\ painting\r\n\ the\ panel\ any\ time\ there\ is\ a\ change\ in\ the\ panel.\r\n
+comment3.params=e
+comment3.target=void\ mouseClicked(java.awt.event.MouseEvent)
+comment3.text=\r\n\ The\ mouseClicked\ method\ will\ create\ a\ new\ SmartEllipse\r\n\ and\ (eventually)\ add\ it\ to\ the\ ArrayList\ of\ dots\ in\ the\ drawing\ area\r\n
+numComments=4

DrawingPanel.java

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+/** Drawing Panel displays the circles the user has created via mouse clicks
+ * 
+ * @author (Greg Johnson) 
+ * @version (November 1, 2017)
+ */
+import java.awt.*;
+import javax.swing.*;
+import javax.swing.event.*;
+import com.sun.xml.internal.bind.v2.runtime.reflect.ListIterator;
+import jdk.internal.dynalink.beans.StaticClass;
+import java.awt.event.*;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.Random;
+
+public class DrawingPanel extends JPanel 
+{
+        SmartEllipse	_circle = null;
+        ArrayList<SuperEllipse> EllipseList = new ArrayList<SuperEllipse>();
+        JButton sButton = new JButton("Save to file");
+        JButton rButton = new JButton("Read from file");
+        JPanel panel = new JPanel();
+        private KeySListener _saveKey;
+        private KeyOListener _openKey;
+        Random rand = new Random();
+
+
+    /**
+     * Constructor for objects of class ObjectPanel
+     */
+    public DrawingPanel()
+    {
+    	set_saveKey(new KeySListener(this));
+    	set_openKey(new KeyOListener(this));
+    	this.add(sButton);
+    	this.add(rButton);
+		MyMouseListener myMouseListener = new MyMouseListener(this);
+
+        // set up the display on the panel
+        this.setBackground(Color.WHITE);
+
+        // add the panel as a MouseListener
+        this.addMouseListener(myMouseListener);
+
+        sButton.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+	            JFileChooser fileDialog = new JFileChooser();
+	            int returnVal = fileDialog.showSaveDialog(sButton);
+				if (returnVal == JFileChooser.APPROVE_OPTION) {
+	            try (ObjectOutputStream objectOutputStream =  new ObjectOutputStream( new FileOutputStream(fileDialog.getSelectedFile()));)
+	            {
+
+	            	//ObjectOutputStream objectOutputStream =  new ObjectOutputStream(new FileOutputStream("object.data"));
+	                objectOutputStream.writeObject(EllipseList);
+	            	objectOutputStream.close();
+
+				} catch (Exception e2) {
+					e2.printStackTrace();
+				}
+
+			}}
+
+		});
+        rButton.addActionListener(new ActionListener() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+	            JFileChooser fileDialog = new JFileChooser();
+	            int returnVal = fileDialog.showOpenDialog(rButton);
+				if (returnVal == JFileChooser.APPROVE_OPTION) {
+				try(ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(fileDialog.getSelectedFile()));){
+					EllipseList= (ArrayList<SuperEllipse>) objectInputStream.readObject();
+					getParent().repaint();
+				}
+				catch (Exception e2) {
+					// TODO: handle exception
+					e2.printStackTrace();
+    }}}
+        });
+    }
+
+    /**
+     * The paintComponent method of class DrawingPanel is responsible for painting
+     * the panel any time there is a change in the panel.
+     */
+    public void paintComponent(Graphics aBrush)
+    {
+        super.paintComponent(aBrush);
+        Graphics2D aBetterBrush = (Graphics2D)aBrush;
+        for(SuperEllipse smartEllipse : EllipseList) {
+        	smartEllipse.fill(aBetterBrush);
+        }
+    }
+
+    /**
+     * The mouseClicked method will create a new SmartEllipse
+     * and (eventually) add it to the ArrayList of dots in the drawing area
+     */
+     public void mouseClicked(java.awt.event.MouseEvent e)
+     {
+        Point currentPoint;
+        // get the current mouse location
+        currentPoint = e.getPoint();
+
+		//create a new circle and put draw it on the panel
+		_circle = new SuperEllipse(get_color());
+		_circle.setSize(20,20);							//dot on screen is 20 by 20 pixels
+		_circle.setLocation(currentPoint.x-10, currentPoint.y-10);  //subtracting 10 from x and y centers the circle on the mouse click
+		repaint();	
+		EllipseList.add((SuperEllipse) _circle);
+    }   
+
+     private Color get_color() {
+    	int red = rand.nextInt(250);
+    	int blue = rand.nextInt(250);
+    	int green = rand.nextInt(250);
+    	return new Color(red, blue, green);
+     }
+
+
+     public KeySListener get_saveKey() {
+		return _saveKey;
+	}
+
+	public void set_saveKey(KeySListener _saveKey) {
+		this._saveKey = _saveKey;
+	}
+
+	public KeyOListener get_openKey() {
+		return _openKey;
+	}
+
+	public void set_openKey(KeyOListener _openKey) {
+		this._openKey = _openKey;
+	}
+
+	private class KeySListener extends KeyInteractor{
+    	 public KeySListener(JPanel p) {
+    		 super(p, KeyEvent.VK_S);
+    	 }
+    	 public void actionPerformed(ActionEvent e) {
+    		 sButton.doClick();
+    	 }
+     }
+
+     private class KeyOListener extends KeyInteractor{
+    	 public KeyOListener(JPanel p) {
+    		 super(p, KeyEvent.VK_O);
+    	 }
+    	 public void actionPerformed(ActionEvent e) {
+    		 rButton.doClick();
+    	 }
+     }
+
+}

KeyInteractor.ctxt

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+#BlueJ class context
+comment0.target=KeyInteractor
+comment0.text=\r\n\ A\ simplified\ class\ for\ keyboard\ interaction.\ Subclasses\ override\r\n\ the\ \ actionPerformed\ method\ to\ do\ something\ useful.\ While\ \ \ \ \ \ \ \ \ \r\nthe\ javax.swing.JComponent\ passed\ in\ can\ technically\ be\r\n\ anything,\ it\ should\ generally\ be\ the\ main\ panel\ in\ a\ GUI.\r\n\ The\ call\ to\ super()\ in\ the\ subclass\ will\ need\ parameters--the\ component\ \r\n\ and\ the\ keyCode\ at\ least.\r\n\r\n\ @author\ John\ Goodwin\ (simplified\ rdm)\r\n
+comment1.params=comp\ keyCode\ mod
+comment1.target=KeyInteractor(javax.swing.JComponent,\ int,\ int)
+comment1.text=\r\n\ Creates\ a\ key\ interactor\ for\ the\ specified\ component.\r\n\r\n\ @param\ comp\ the\ component\ that\ will\ receive\ the\ key\ input\r\n\ @param\ keyCode\ the\ (int)\ key\ code\ that\ the\ interactor\ will\ respond\ to\r\n\ @param\ mod\ the\ (int)\ modifier\ of\ that\ key\ code.\ \r\n\ \ see\ constants\ in\ KeyEvent\ for\ codes\r\n
+comment2.params=comp\ keyCode
+comment2.target=KeyInteractor(javax.swing.JComponent,\ int)
+comment3.params=e
+comment3.target=void\ actionPerformed(java.awt.event.ActionEvent)
+comment3.text=\r\n\r\n\ The\ method\ that\ gets\ called\ when\ the\ key\ is\ pressed.\r\n\r\n\ @param\ e\ the\ ActionEvent\ associated\ with\ the\ current\ call\r\n
+numComments=4

KeyInteractor.java

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+//source code for KeyInteractor:
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+
+/**
+ * A simplified class for keyboard interaction. Subclasses override
+ * the  actionPerformed method to do something useful. While         
+the javax.swing.JComponent passed in can technically be
+ * anything, it should generally be the main panel in a GUI.
+ * The call to super() in the subclass will need parameters--the component 
+ * and the keyCode at least.
+ *
+ * @author John Goodwin (simplified rdm)
+ */
+
+
+public abstract class KeyInteractor extends AbstractAction {
+
+    public static final String COMMAND_PREFIX = "KeyInteractor";
+
+  /**
+     * Creates a key interactor for the specified component.
+     *
+     * @param comp the component that will receive the key input
+     * @param keyCode the (int) key code that the interactor will respond to
+     * @param mod the (int) modifier of that key code. 
+     *  see constants in KeyEvent for codes
+     */
+   public KeyInteractor (JComponent comp, int keyCode, int mod) { 
+	super();
+	// a name that identifies this action
+	String actionID = COMMAND_PREFIX + keyCode + "." + mod;
+
+	//map the keystroke to the actionID in the InputMap
+	InputMap imap = comp.getInputMap();
+	imap.put(KeyStroke.getKeyStroke(keyCode,mod), actionID);
+
+	//map the action key to this
+	ActionMap amap = comp.getActionMap();
+	amap.put(actionID, this);
+    }
+
+    public KeyInteractor (JComponent comp, int keyCode) { 
+	this(comp,keyCode,0);  // default--no CTRL-SHIFT-etc modifier
+    }
+
+    /**
+     *
+     * The method that gets called when the key is pressed.
+     *
+     * @param e the ActionEvent associated with the current call
+     */
+    public abstract void actionPerformed (ActionEvent e);
+
+}

MyMouseListener.ctxt

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+#BlueJ class context
+comment0.target=MyMouseListener
+comment1.params=dp
+comment1.target=MyMouseListener(DrawingPanel)
+comment2.params=e
+comment2.target=void\ mouseClicked(java.awt.event.MouseEvent)
+numComments=3

MyMouseListener.java

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+import java.awt.event.*;
+import javax.swing.event.*;
+    public class MyMouseListener extends MouseAdapter
+    {
+        DrawingPanel _myPanel;        
+        // constructor
+        public MyMouseListener(DrawingPanel dp)
+        {
+            _myPanel = dp;
+        }
+        public void mouseClicked(MouseEvent e)
+        {
+            _myPanel.mouseClicked(e);
+        }
+    }

SmartEllipse.ctxt

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+#BlueJ class context
+comment0.target=SmartEllipse
+comment1.params=aColor
+comment1.target=SmartEllipse(java.awt.Color)
+comment1.text=\ \r\n\ Constructor\ for\ the\ SmartEllipse\ class\r\n
+comment10.params=aBetterBrush
+comment10.target=void\ fill(java.awt.Graphics2D)
+comment10.text=\ \r\n\ Method\ fill\ will\ fill\ in\ the\ elliptical\ object\ with\ the\ fill\ color\r\n
+comment11.params=aBrush
+comment11.target=void\ draw(java.awt.Graphics2D)
+comment11.text=\r\n\ Method\ draw\ will\ draw\ an\ outline\ of\ the\ elliptical\ object\ with\ \r\n\ the\ draw\ color\r\n
+comment2.params=aColor
+comment2.target=void\ setBorderColor(java.awt.Color)
+comment3.params=
+comment3.target=java.awt.Color\ getBorderColor()
+comment4.params=aColor
+comment4.target=void\ setFillColor(java.awt.Color)
+comment5.params=
+comment5.target=java.awt.Color\ getFillColor()
+comment6.params=aRotation
+comment6.target=void\ setRotation(int)
+comment7.params=x\ y
+comment7.target=void\ setLocation(double,\ double)
+comment8.params=aWidth\ aHeight
+comment8.target=void\ setSize(int,\ int)
+comment9.params=aChangeInX\ aChangeInY
+comment9.target=void\ move(int,\ int)
+numComments=12