Java Developer's Companion/Java Developer's Companion.iso/binaries/Windows/BDK/apis/sun/beans/editors/FontEditor.java

Java Source | 1997-03-17 | 4.7 KB | 192 lines

/*
 * @(#)FontEditor.java    1.22 97/01/10
 *
 * Copyright (c) 1996 Sun Microsystems, Inc. All Rights Reserved.
 *
 * This software is the confidential and proprietary information of Sun
 * Microsystems, Inc. ("Confidential Information").  You shall not
 * disclose such Confidential Information and shall use it only in
 * accordance with the terms of the license agreement you entered into
 * with Sun.
 *
 * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
 * SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
 * PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
 * SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
 * THIS SOFTWARE OR ITS DERIVATIVES.
 *
 * CopyrightVersion bdk_beta
 *
 */

package sun.beans.editors;

import java.awt.*;
import java.beans.*;

public class FontEditor extends Panel implements java.beans.PropertyEditor {

    public FontEditor() {
    setLayout(null);

    toolkit = Toolkit.getDefaultToolkit();
    fonts = toolkit.getFontList();

    familyChoser = new Choice();
    for (int i = 0; i < fonts.length; i++) {
        familyChoser.addItem(fonts[i]);
    }
    add(familyChoser);
    familyChoser.reshape(20, 5, 100, 30);

    styleChoser = new Choice();
    for (int i = 0; i < styleNames.length; i++) {
        styleChoser.addItem(styleNames[i]);
    }
    add(styleChoser);
    styleChoser.reshape(145, 5, 70, 30);

    sizeChoser = new Choice();
    for (int i = 0; i < pointSizes.length; i++) {
        sizeChoser.addItem("" + pointSizes[i]);
    }
    add(sizeChoser);
    sizeChoser.reshape(220, 5, 70, 30);

    resize(300,40);
    }


    public Dimension preferredSize() {
    return new Dimension(300, 40);
    }

    public void setValue(Object o) {
    font = (Font) o;
    changeFont(font);
        // Update the current GUI choices.
    for (int i = 0; i < fonts.length; i++) {
        if (fonts[i].equals(font.getFamily())) {
        familyChoser.select(i);
            break;
        }
    }
    for (int i = 0; i < styleNames.length; i++) {
        if (font.getStyle() == styles[i]) {
        styleChoser.select(i);
            break;
        }
    }
    for (int i = 0; i < pointSizes.length; i++) {
        if (font.getSize() <= pointSizes[i]) {
        sizeChoser.select(i);
            break;
        }
    }
    }

    private void changeFont(Font f) {
    font = f;
    if (sample != null) {
        remove(sample);
    }
    sample = new Label(sampleText);
    sample.setFont(font);
    add(sample);
    Component p = getParent();
    if (p != null) {
        p.invalidate();
        p.layout();
    }
    invalidate();
    layout();
    repaint();
    support.firePropertyChange("", null, null);
    }

    public Object getValue() {
    return (font);
    }

    public String getJavaInitializationString() {
    return "new java.awt.Font(\"" + font.getFamily() + "\", " +
                 font.getStyle() + ", " + font.getSize() + ")";
    }

    public boolean action(Event e, Object arg) {
    String family = familyChoser.getSelectedItem();
    int style = styles[styleChoser.getSelectedIndex()];
    int size = pointSizes[sizeChoser.getSelectedIndex()];
    try {
        Font f = new Font(family, style, size);
        changeFont(f);
    } catch (Exception ex) {
        System.err.println("Couldn't create font " + family + "-" +
            styleNames[style] + "-" + size);
    }
    return (false);
    }


    public boolean isPaintable() {
    return true;
    }

    public void paintValue(java.awt.Graphics gfx, java.awt.Rectangle box) {
    // Silent noop.
    Font oldFont = gfx.getFont();
    gfx.setFont(font);
    FontMetrics fm = gfx.getFontMetrics();
    int vpad = (box.height - fm.getAscent())/2;
    gfx.drawString(sampleText, 0, box.height-vpad);
    gfx.setFont(oldFont);
    }

    public String getAsText() {
    return null;
    }

    public void setAsText(String text) throws IllegalArgumentException {
    throw new IllegalArgumentException(text);
    }

    public String[] getTags() {
    return null;
    }

    public java.awt.Component getCustomEditor() {
    return this;
    }

    public boolean supportsCustomEditor() {
    return true;
    }

    public void addPropertyChangeListener(PropertyChangeListener l) {
    support.addPropertyChangeListener(l);
    }

    public void removePropertyChangeListener(PropertyChangeListener l) {
    support.removePropertyChangeListener(l);
    }

    private Font font;
    private Toolkit toolkit;
    private String sampleText = "Abcde...";

    private Label sample;
    private Choice familyChoser;
    private Choice styleChoser;
    private Choice sizeChoser;

    private String fonts[];
    private String[] styleNames = { "plain", "bold", "italic" };
    private int[] styles = { Font.PLAIN, Font.BOLD, Font.ITALIC };
    private int[] pointSizes = { 3, 5, 8, 10, 12, 14, 18, 24, 36, 48 };

    private PropertyChangeSupport support = new PropertyChangeSupport(this);

}