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| public class DemoDrawText extends JPanel {
private final List<Text> texts = new ArrayList<>();
public DemoDrawText() {
setPreferredSize(new Dimension(500,500));
setBackground(Color.WHITE);
setForeground(Color.BLACK);
}
public void addText(String text, Font font, int x, int y) {
addText(new Text(text, font, x, y));
}
public void addText(Text text) {
texts.add(text);
repaint();
}
public void reset() {
texts.clear();
repaint();
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
texts.forEach(text-> text.draw(g));
}
public static class Text {
public final String text;
public final Font font;
public final int x;
public final int y;
public Text(String text, Font font, int x, int y) {
this.text=Objects.requireNonNull(text);
this.font=Objects.requireNonNull(font);
this.x=x;
this.y=y;
}
private void draw(Graphics g) {
g.setFont(font);
g.drawString(text, x, y);
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("Démo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DemoDrawText text = new DemoDrawText();
frame.add(text, BorderLayout.CENTER);
JPanel controlPanel = new JPanel(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints(0, 0, 1, 1, 1, 0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(2,2,2,2), 0, 0);
gbc.gridwidth=4;
JTextField textfield = new JTextField();
controlPanel.add(textfield,gbc);
Box xyPanel = new Box(BoxLayout.LINE_AXIS);
gbc.gridx=0;
gbc.gridy=1;
controlPanel.add(xyPanel, gbc);
xyPanel.add(new JLabel("x :"));
xyPanel.add(Box.createHorizontalStrut(4));
JFormattedTextField xfield = new JFormattedTextField(NumberFormat.getIntegerInstance());
xfield.setValue(0);
xyPanel.add(xfield);
xyPanel.add(Box.createHorizontalStrut(4));
xyPanel.add(new JLabel("y :"));
xyPanel.add(Box.createHorizontalStrut(4));
JFormattedTextField yfield = new JFormattedTextField(NumberFormat.getIntegerInstance());
yfield.setValue(10);
xyPanel.add(yfield);
GraphicsEnvironment grenv = GraphicsEnvironment.getLocalGraphicsEnvironment();
JComboBox<String> fontCombo = new JComboBox<>(Arrays.stream(grenv.getAllFonts())
.map(Font::getName)
.toArray(String[]::new));
fontCombo.setSelectedItem("Arial");
gbc.gridx=0;
gbc.gridy=5;
gbc.gridwidth=1;
controlPanel.add(fontCombo, gbc);
gbc.gridx=2;
JFormattedTextField sizefield = new JFormattedTextField(NumberFormat.getIntegerInstance());
sizefield.setColumns(5);
controlPanel.add(sizefield, gbc);
sizefield.setValue(12);
gbc.gridx=0;
gbc.gridy=6;
JButton buttonConfirm = new JButton("Confirmer");
controlPanel.add(buttonConfirm, gbc);
buttonConfirm.addActionListener(e-> text.addText(textfield.getText(), createFont((String)fontCombo.getSelectedItem(), (Number)sizefield.getValue()), ((Number)xfield.getValue()).intValue(), ((Number)yfield.getValue()).intValue()));
gbc.gridx=2;
JButton buttonDelete = new JButton("Effacer");
controlPanel.add(buttonDelete, gbc);
buttonDelete.addActionListener(e-> text.reset());
gbc.gridx=0;
gbc.gridy=4;
gbc.gridwidth=1;
gbc.weightx=0;
gbc.anchor=GridBagConstraints.WEST;
gbc.fill=GridBagConstraints.NONE;
controlPanel.add(new JLabel("Police"), gbc);
gbc.gridx=2;
controlPanel.add(new JLabel("Taille"), gbc);
frame.add(controlPanel, BorderLayout.EAST);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
private static Font createFont(String name, Number size) {
return new Font(name, Font.PLAIN, size.intValue());
}
} |
