Discussion :

[WiZarD67]

Bonjour,

Je viens vers vous puisque j'ai une question. Est-il possible de changer l'apparence de la souris dans une JFrame grâce à un class MouseListener séparer de la fenêtre principale?

Cordialement,

[joel.drigo]

Salut,

Je suppose que par "séparé", tu veux dire "externe". Oui, c'est possible.

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
import java.awt.AWTException;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Component;
import java.awt.Cursor;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import java.awt.Robot;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import java.util.Map;
 
import javax.swing.JComponent;
import javax.swing.SwingUtilities;
 
public class ColorCursorMouseAdapter extends MouseAdapter {
 
	private static final String PREFIX = "COLORPICKERCURSOR_";
	private static Map<Color,Cursor> cursors = new HashMap<>();
	private Cursor componentCursor;
	private JComponent lastcomponent;
 
	@Override
	public void mouseMoved(MouseEvent e) {
 
		JComponent component = (JComponent) e.getSource();
 
		if ( lastcomponent!=component ) {
			restoreCursor(lastcomponent);
		}
		lastcomponent = component;
 
		Rectangle bounds = component.getBounds();
 
		Point point = bounds.getLocation();
		SwingUtilities.convertPointToScreen(point, component);
		bounds.setLocation(point);
 
		try {
			Robot robot = new Robot();
			BufferedImage image = robot.createScreenCapture(bounds);
 
			Color color = new Color(image.getRGB(e.getX(), e.getY()));
 
			saveCursor(component);
			component.setCursor(getCursor(color));
 
		} catch (AWTException exception) {
			exception.printStackTrace();
		}
 
	}
 
	@Override
	public void mouseExited(MouseEvent e) {
		restoreCursor((Component)e.getSource());
		lastcomponent=null;
		componentCursor=null;
	}
 
	@Override
	public void mouseDragged(MouseEvent e) {
		restoreCursor((Component)e.getSource());
	}
 
 
 
	private void restoreCursor(Component source) {
		if ( lastcomponent==source && componentCursor!=null ) {
			lastcomponent.setCursor(componentCursor);
		}
	}
 
	private void saveCursor(Component component) {
		Cursor cursor = component.getCursor();
		if ( !cursor.getName().startsWith(PREFIX) ) {
			componentCursor = cursor;
		}
	}
 
	private Cursor getCursor(Color color) {
		return cursors.computeIfAbsent(color, this::createCursor);
	}
 
	private Cursor createCursor(Color color) {
		BufferedImage bufferedImage = new BufferedImage(32,32,BufferedImage.TYPE_INT_ARGB);
		Graphics2D graphics = bufferedImage.createGraphics();
		graphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
		graphics.setColor(color);
		graphics.fillOval(10, 10, 13, 13);
		graphics.setColor(Color.BLACK);
		graphics.drawOval(10, 10, 13, 13);
		graphics.drawOval(10, 10, 12, 12);
		graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR));
		graphics.drawLine(13, 16, 19, 16);
		graphics.drawLine(16, 13, 16, 19);
		graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
		graphics.drawLine(13, 16, 19, 16);
		graphics.drawLine(16, 13, 16, 19);
 
		graphics.dispose();
		return java.awt.Toolkit.getDefaultToolkit().createCustomCursor(bufferedImage, new Point(25,25), PREFIX+color.toString());
	}
 
}

Code :

Sélectionner tout - Visualiser dans une fenêtre à part

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
import java.awt.Color;
import java.awt.Dimension;
import java.awt.GridLayout;
 
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
 
public class Main {
 
	public static void main(String[] args) {
 
		JFrame frame = new JFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 
		JPanel panel = new JPanel(new GridLayout(0, 3));
		panel.add(new ColorPanel(Color.RED));
		panel.add(new ColorPanel(Color.ORANGE));
		panel.add(new ColorPanel(Color.GREEN.darker()));
		panel.add(new ColorPanel(Color.MAGENTA));
		panel.add(new JLabel("Texte"));
		JLabel label = new JLabel("Texte bleu");
		label.setForeground(Color.BLUE);
		panel.add(label);
 
		ColorCursorMouseAdapter mouseAdapter = new ColorCursorMouseAdapter();
		panel.addMouseListener(mouseAdapter);
		panel.addMouseMotionListener(mouseAdapter);
 
		frame.add(panel);
 
		frame.setSize(new Dimension(300,300));
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
 
	}
 
	public static class ColorPanel extends JPanel {
 
		public ColorPanel(Color color) {
			setBackground(color);
		}
 
	}
 
}

[WiZarD67]

Bonsoir,

Merci pour cette exemple grâce à cela j'ai réussi à faire ce que je voulais