JComboBox einträge rechts ausrichten ...

[christine_30]

JcomboBox einträge rechts ausrichten ...

in dem unteren Beispiel werden die einträge im ComboBox automatisch links ausgerichtet

comboBox.addItem("1000");
comboBox.addItem("10");
comboBox.addItem("1");
comboBox.addItem("100'000");
comboBox.addItem("10'000");
comboBox.addItem("1'000");

wie kann ich die Item einträge „Rechts“ bzw. „Zentral“ ausrichten

Mit freundlichen Grüßen.
Christine.

[CengizS]

Hi!

Das geht mit einem eigenen ComboBoxRenderer. Hier hast du ein etwas größeres Beispiel dafür:

/*
 * ListRendererDemo.java
 *
 * Created on 4. März 2003, 16:00
 * by Cengiz Sahin (http://www.javaCore.de)
 */

package de.javacore.gui;

import java.awt.Font;
import java.awt.GraphicsEnvironment;
import javax.swing.DefaultComboBoxModel;

/** Demo for ListRenderers
 *
 * @author  Sahin Cengiz (javaCore)
 */
public class ListRendererDemo extends javax.swing.JFrame {

    /** Creates a new form ListRendererDemo */
    public ListRendererDemo() {
        initComponents();
        DefaultComboBoxModel mcbm = new DefaultComboBoxModel();
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Font fonts[] = ge.getAllFonts();
        for (int i=0; i<fonts.length-1; i++) {
            mcbm.addElement(fonts[i]);
        }

        jComboBox1.setModel(mcbm);
        jComboBox1.setRenderer(new ComboBoxRenderer());

    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    private void initComponents() {
        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        jPanel3 = new javax.swing.JPanel();
        jPanel4 = new javax.swing.JPanel();
        jPanel5 = new javax.swing.JPanel();
        jPanel6 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jComboBox1 = new javax.swing.JComboBox();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();

        setTitle("ListRendererDemo (FontSelector)");
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                exitForm(evt);
            }
        });

        getContentPane().add(jPanel1, java.awt.BorderLayout.NORTH);

        getContentPane().add(jPanel2, java.awt.BorderLayout.EAST);

        getContentPane().add(jPanel3, java.awt.BorderLayout.SOUTH);

        getContentPane().add(jPanel4, java.awt.BorderLayout.WEST);

        jPanel5.setLayout(new java.awt.BorderLayout());

        jPanel6.setLayout(new java.awt.BorderLayout(5, 5));

        jLabel1.setText("Font:");
        jPanel6.add(jLabel1, java.awt.BorderLayout.WEST);

        jComboBox1.addItemListener(new java.awt.event.ItemListener() {
            public void itemStateChanged(java.awt.event.ItemEvent evt) {
                jComboBox1ItemStateChanged(evt);
            }
        });

        jPanel6.add(jComboBox1, java.awt.BorderLayout.CENTER);

        jPanel5.add(jPanel6, java.awt.BorderLayout.NORTH);

        jLabel2.setText("the quick brown fox jumps over the lazy dog");
        jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jPanel5.add(jLabel2, java.awt.BorderLayout.CENTER);

        jLabel3.setText("0 1 2 3 4 5 6 7 8 9");
        jLabel3.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jPanel5.add(jLabel3, java.awt.BorderLayout.SOUTH);

        getContentPane().add(jPanel5, java.awt.BorderLayout.CENTER);

        pack();
    }
    /** Called whenever the value in the combobox has changed */
    private void jComboBox1ItemStateChanged(java.awt.event.ItemEvent evt) {
        Font theFont = (Font)jComboBox1.getSelectedItem();
        jComboBox1.setFont(new java.awt.Font(theFont.getName(), theFont.getStyle(), 14));
        jLabel2.setFont(jComboBox1.getFont());
        jLabel3.setFont(jComboBox1.getFont());
    }

    /** Exit the Application */
    private void exitForm(java.awt.event.WindowEvent evt) {
        System.exit(0);
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        new ListRendererDemo().show();
    }

    // Variables declaration - do not modify
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JPanel jPanel6;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel5;
    private javax.swing.JPanel jPanel4;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration

}

/** Benutzerdefinierter Renderer um in der ComboBox diverse Fonts anzeigen zu können */
class ComboBoxRenderer extends javax.swing.JLabel implements javax.swing.ListCellRenderer {
    public ComboBoxRenderer() {
        setOpaque(true);
        setHorizontalAlignment(CENTER);     // Hier kann die Ausrichtung eingestellt werden
        setVerticalAlignment(CENTER);       // dto.
    }

    public java.awt.Component getListCellRendererComponent(
                                       javax.swing.JList list,
                                       Object value,
                                       int index,
                                       boolean isSelected,
                                       boolean cellHasFocus) {

        Font theFont = (Font)value;    // Vorsicht! Es muss nicht immer ein String sein!
        if (isSelected) {
            setBackground(list.getSelectionBackground());
            setForeground(list.getSelectionForeground());
        } else {
            setBackground(list.getBackground());
            setForeground(list.getForeground());
        }
        String fontName = theFont.getName();
        if (theFont.hasUniformLineMetrics())
            setText(fontName);
        else {
            setFont(new Font("Arial", Font.PLAIN, 16));
            setText(fontName);
        }
        // Eigentlich passiert alles hier ...
        setFont(new Font(theFont.getName(), theFont.getStyle(), 14));

        return this;
    }
}

[christine_30]

Danke der Ansatz ist GUTTTTT... ES FUNKT.

christine30.