I am creating a program that has multiple classes. The program draws various shapes on a gui and the program needs to be modified to incorperate a highlighting function if a shape is clicked on. I have done the coding but it is not drawing the circle and I am not sure why. The highlight method is supposed to draw the highlighting circle. The highlight method is called when a match is found from the search method.
public class ShapeFactory extends JPanel {
public enum ShapeType {
Shape, Triangle, Circle, Rectangle, Mix
};
/**
* The instance member field of an array of Shape references
*/
private Shape[] shapes;
Shape sh = new Shape();
/**
* An instance member field of random number generator
*/
private Random rand;
private Shape selectedshape = null;
/**
* Maximum size of each shape
*/
private int maxSize;
/**
* Number of shapes to splash
*/
private int nShapes;
private ShapeType shapeType;
private int x,y;
/**
* Constructor
*/
public ShapeFactory() {
// Put it as a null reference for now. Let the user determine the shape
// array.
shapes = null;
// Instantiate the random generator
rand = new Random();
// Initialize maximum shape size,
maxSize = 5;
nShapes = 10;
shapeType = ShapeType.Shape;
// Set the panel dimensions for visualization
this.setPreferredSize(new Dimension(800, 600));
// this.setBorder(BorderFactory.createLineBorder(Color.GRAY, 2));
}
/**
* Overrides this method from the JPanel parent to draw the shapes
*/
public void paintComponent(Graphics g) {
// do whatever that has been defined in the parent class
super.paintComponent(g);
if (shapes == null)
this.buildShapes();
// draw all the shapes
for (int i = 0; i < shapes.length; ++i)
shapes[i].paint(g);
//if statement to paint the circle around the shape selected
if (selectedshape != null)
highlight(sh.x(), sh.y());
}
//highlight method to create the circle to highlight the selected shape
public void highlight(int x, int y){
Graphics g = this.getGraphics();
g.drawOval(x, y, 40, 40);
g.fillOval(x,y, 40, 40);
g.setColor(Color.gray);
paint(g);
}
public int getMaxSize() {
return maxSize;
}
public int getShapeCount() {
return nShapes;
}
public void setMaxSize(int val) {
this.maxSize = val;
this.buildShapes();
}
public void setShapeCount(int val) {
this.nShapes = val;
this.buildShapes();
}
public void setShapeType(ShapeType type) {
shapeType = type;
this.buildShapes();
}
/**
* A shapes mutator method This method will append more shapes to the
* current member field of shapes
*
* @param n
* How many shape objects to append
* @param shapeType
* The concrete shape type
*/
private void buildShapes() {
// / instantiate the array object
shapes = new Shape[this.nShapes];
int nTypes = ShapeType.values().length - 1;
// / instantiate the shape objects
for (int i = 0; i < shapes.length; ++i) {
shapes[i] = getShape(this.shapeType);
}
randomize(shapes);
}
private Shape getShape(ShapeType type) {
switch (type) {
case Shape:
return new Shape();
case Triangle:
return new Triangle();
case Circle:
return new Circle();
case Rectangle:
return new Rectangle();
default:
ShapeType randomType = ShapeType.values()[rand.nextInt(4)];
return getShape(randomType);
}
}
private void randomize(Shape[] shapes) {
// / reset each shape object's property to splash
Dimension s = this.getSize();
for (int i = 0; i < shapes.length; ++i) {
shapes[i].setSize(rand.nextInt(maxSize) + 1);
shapes[i].setPosition(rand.nextInt(this.getWidth()),
rand.nextInt(this.getHeight()));
shapes[i].setRotation(rand.nextInt(360));
shapes[i].setColor(getRandomColor());
}
}
/**
* A Helper method that generate a random RBGA color
*
* @return a random color
*/
private Color getRandomColor() {
int c = Color.HSBtoRGB(rand.nextFloat(), rand.nextFloat() / 2f + 0.5f,
rand.nextFloat() / 2f + 0.7f);
return new Color(c);
}
//Search method created to search for the selected shape
public void search(int x2, int y2) {
selectedshape = null;
for (int i = 0; i < shapes.length; ++i)
if ((sh.size() - sh.x()) == getX() && (sh.size() - sh.y()) == getY()){
selectedshape = shapes[i];
break;
}
}
}
This is the gui class
public class ShapeSplashApp extends JPanel implements ChangeListener,
ActionListener, MouseListener {
private ShapeFactory shapes;
public int x, y;
public ShapeSplashApp() {
shapes = new ShapeFactory();
JSpinner maxSize = new JSpinner();
maxSize.setName("maxSize");
maxSize.setValue(shapes.getMaxSize());
maxSize.setPreferredSize(new Dimension(80, 30));
maxSize.addChangeListener(this);
JSpinner shapeCount = new JSpinner();
shapeCount.setName("shapeCount");
shapeCount.setValue(shapes.getShapeCount());
shapeCount.setPreferredSize(maxSize.getPreferredSize());
shapeCount.addChangeListener(this);
JComboBox splashShapes = new JComboBox();
splashShapes.setName("shape");
ShapeFactory.ShapeType[] types = ShapeFactory.ShapeType.values();
for (int i = 0; i < types.length; ++i)
splashShapes.addItem(types[i]);
splashShapes.addActionListener(this);
JPanel control = new JPanel();
control.add(new JLabel("Max Size"));
control.add(maxSize);
control.add(new JLabel("Number of Shapes"));
control.add(shapeCount);
control.add(new JLabel("Choices of Shapes"));
control.add(splashShapes);
control.addMouseListener(this);
this.add(control);
this.add(shapes);
Dimension dim = new Dimension(shapes.getPreferredSize());
dim.setSize(dim.getWidth() + 20, dim.getHeight() + 50);
this.setPreferredSize(dim);
}
@Override
public void stateChanged(ChangeEvent e) {
// TODO Auto-generated method stub
JSpinner source = (JSpinner) e.getSource();
String name = source.getName();
int val = (Integer) source.getValue();
if (name.equals("maxSize")) {
shapes.setMaxSize(val);
shapes.repaint();
} else if (name.equals("shapeCount")) {
shapes.setShapeCount(val);
shapes.repaint();
}
}
@Override
public void actionPerformed(ActionEvent e) {
JComboBox source = (JComboBox) e.getSource();
Object val = source.getSelectedItem();
shapes.setShapeType((ShapeFactory.ShapeType) val);
shapes.repaint();
}
public static void main(String[] args) {
JFrame win = new JFrame("Shape Splash");
win.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
win.getContentPane().add(new ShapeSplashApp());
win.pack();
win.setVisible(true);
}
@Override
public void mouseClicked(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseEntered(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mouseExited(MouseEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void mousePressed(MouseEvent e) {
int x = e.getX();
int y = e.getY();
shapes.search(x,y);
shapes.repaint();
}
@Override
public void mouseReleased(MouseEvent arg0) {
// TODO Auto-generated method stub
}
}
