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| public class ShapePanel extends JPanel {
private final EventListenerList listeners = new EventListenerList();
private Shape shape;
public ShapePanel(Shape shape) {
this.shape = shape;
MouseAdapter mouseAdapter = new MouseAdapter() {
private boolean in;
private boolean pressed;
@Override
public void mouseEntered(MouseEvent e) {
if (shape.contains(e.getX(), e.getY())) {
in = true;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_ENTERED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseEntered(event);
}
}
}
@Override
public void mouseExited(MouseEvent e) {
if ( in ) {
in = false;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_EXITED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseExited(event);
}
}
}
@Override
public void mouseMoved(MouseEvent e) {
if (shape.contains(e.getX(), e.getY())) {
if ( in ) {
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_MOVED, e);
for (MouseMotionListener mouseListener : listeners.getListeners(MouseMotionListener.class)) {
mouseListener.mouseMoved(event);
}
}
else {
in = true;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_ENTERED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseEntered(event);
}
}
}
else if ( in ) {
in = false;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_EXITED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseExited(event);
}
}
}
@Override
public void mouseDragged(MouseEvent e) {
if (shape.contains(e.getX(), e.getY())) {
if ( in ) {
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_DRAGGED, e);
for (MouseMotionListener mouseListener : listeners.getListeners(MouseMotionListener.class)) {
mouseListener.mouseDragged(event);
}
}
else {
in = true;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_ENTERED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseEntered(event);
}
}
}
else if ( in ) {
in = false;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_EXITED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseExited(event);
}
}
}
@Override
public void mouseClicked(MouseEvent e) {
if (shape.contains(e.getX(), e.getY())) {
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_CLICKED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseClicked(event);
}
}
}
@Override
public void mousePressed(MouseEvent e) {
if (shape.contains(e.getX(), e.getY())) {
pressed=true;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_PRESSED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mousePressed(event);
}
}
}
@Override
public void mouseReleased(MouseEvent e) {
if ( pressed ) {
pressed = false;
final MouseEvent event = createMouseEvent(MouseEvent.MOUSE_RELEASED, e);
for (MouseListener mouseListener : listeners.getListeners(MouseListener.class)) {
mouseListener.mouseReleased(event);
}
}
}
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
if (shape.contains(e.getX(), e.getY())) {
final MouseWheelEvent event = createMouseWheelEvent(MouseEvent.MOUSE_WHEEL, e);
for (MouseWheelListener mouseListener : listeners.getListeners(MouseWheelListener.class)) {
mouseListener.mouseWheelMoved(event);
}
}
}
private MouseEvent createMouseEvent(int type, MouseEvent e) {
return new MouseEvent(ShapePanel.this,
type,
System.currentTimeMillis(),
e.getModifiers(),
e.getX(),
e.getY(),
e.getClickCount(),
e.isPopupTrigger(),
e.getButton());
}
private MouseWheelEvent createMouseWheelEvent(int type, MouseWheelEvent e) {
return new MouseWheelEvent(ShapePanel.this,
type,
System.currentTimeMillis(),
e.getModifiers(),
e.getX(),
e.getY(),
e.getClickCount(),
e.isPopupTrigger(),
e.getScrollType(),
e.getScrollAmount(),
e.getWheelRotation());
}
};
super.addMouseListener(mouseAdapter);
super.addMouseMotionListener(mouseAdapter);
super.addMouseWheelListener(mouseAdapter);
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.setColor(getForeground());
((Graphics2D) g).fill(shape);
}
@Override
public void addMouseListener(MouseListener listener) {
listeners.add(MouseListener.class, listener);
}
@Override
public void removeMouseListener(MouseListener listener) {
listeners.remove(MouseListener.class, listener);
}
@Override
public void addMouseWheelListener(MouseWheelListener listener) {
listeners.add(MouseWheelListener.class, listener);
}
@Override
public void removeMouseWheelListener(MouseWheelListener listener) {
listeners.remove(MouseWheelListener.class, listener);
}
@Override
public void addMouseMotionListener(MouseMotionListener listener) {
listeners.add(MouseMotionListener.class, listener);
}
@Override
public void removeMouseMotionListener(MouseMotionListener listener) {
listeners.remove(MouseMotionListener.class, listener);
}
public static void main(String[] args) {
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ShapePanel shapePanel = new ShapePanel(new Ellipse2D.Double(0, 0, 50, 50));
shapePanel.setForeground(Color.ORANGE);
MouseAdapter mouseAdapter = new MouseAdapter() {
@Override
public void mousePressed(MouseEvent e) {
System.out.println("pressed");
}
@Override
public void mouseClicked(MouseEvent e) {
System.out.println("clicked");
}
@Override
public void mouseReleased(MouseEvent e) {
System.out.println("released");
}
@Override
public void mouseDragged(MouseEvent e) {
System.out.println("dragged");
}
@Override
public void mouseEntered(MouseEvent e) {
System.out.println("entered");
}
@Override
public void mouseExited(MouseEvent e) {
System.out.println("exited");
}
@Override
public void mouseMoved(MouseEvent e) {
System.out.println("moved");
}
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
System.out.println("wheelMoved");
}
};
shapePanel.addMouseListener(mouseAdapter);
shapePanel.addMouseMotionListener(mouseAdapter);
shapePanel.addMouseWheelListener(mouseAdapter);
frame.add(shapePanel);
frame.setSize(300, 300);
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
} |
Partager