A font selection dialog
/*
* Copyright (c) Ian F. Darwin, http://www.darwinsys.com/, 1996-2002.
* All rights reserved. Software written by Ian F. Darwin and others.
* $Id: LICENSE,v 1.8 2004/02/09 03:33:38 ian Exp $
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* Java, the Duke mascot, and all variants of Sun's Java "steaming coffee
* cup" logo are trademarks of Sun Microsystems. Sun's, and James Gosling's,
* pioneering role in inventing and promulgating (and standardizing) the Java
* language and environment is gratefully acknowledged.
*
* The pioneering role of Dennis Ritchie and Bjarne Stroustrup, of AT&T, for
* inventing predecessor languages C and C++ is also gratefully acknowledged.
*/
import java.awt.BorderLayout;
import java.awt.Checkbox;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GraphicsEnvironment;
import java.awt.GridLayout;
import java.awt.List;
import java.awt.Panel;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
/**
* A font selection dialog.
* <p>
* Note: can take a long time to start up on systems with (literally) hundreds
* of fonts. TODO change list to JList, add a SelectionChangedListener to
* preview.
*
* @author Ian Darwin
* @version $Id: FontChooser.java,v 1.19 2004/03/20 20:44:56 ian Exp $
*/
public class FontChooser2 extends JDialog {
// Results:
/** The font the user has chosen */
protected Font resultFont;
/** The resulting font name */
protected String resultName;
/** The resulting font size */
protected int resultSize;
/** The resulting boldness */
protected boolean isBold;
/** The resulting italicness */
protected boolean isItalic;
// Working fields
/** Display text */
protected String displayText = "Qwerty Yuiop";
/** The list of Fonts */
protected String fontList[];
/** The font name chooser */
protected List fontNameChoice;
/** The font size chooser */
protected List fontSizeChoice;
/** The bold and italic choosers */
Checkbox bold, italic;
/** The list of font sizes */
protected String fontSizes[] = { "8", "10", "11", "12", "14", "16", "18",
"20", "24", "30", "36", "40", "48", "60", "72" };
/** The index of the default size (e.g., 14 point == 4) */
protected static final int DEFAULT_SIZE = 4;
/**
* The display area. Use a JLabel as the AWT label doesn't always honor
* setFont() in a timely fashion :-)
*/
protected JLabel previewArea;
/**
* Construct a FontChooser -- Sets title and gets array of fonts on the
* system. Builds a GUI to let the user choose one font at one size.
*/
public FontChooser2(Frame f) {
super(f, "Font Chooser", true);
Container cp = getContentPane();
Panel top = new Panel();
top.setLayout(new FlowLayout());
fontNameChoice = new List(8);
top.add(fontNameChoice);
Toolkit toolkit = Toolkit.getDefaultToolkit();
// For JDK 1.1: returns about 10 names (Serif, SansSerif, etc.)
// fontList = toolkit.getFontList();
// For JDK 1.2: a much longer list; most of the names that come
// with your OS (e.g., Arial), plus the Sun/Java ones (Lucida,
// Lucida Bright, Lucida Sans...)
fontList = GraphicsEnvironment.getLocalGraphicsEnvironment()
.getAvailableFontFamilyNames();
for (int i = 0; i < fontList.length; i++)
fontNameChoice.add(fontList[i]);
fontNameChoice.select(0);
fontSizeChoice = new List(8);
top.add(fontSizeChoice);
for (int i = 0; i < fontSizes.length; i++)
fontSizeChoice.add(fontSizes[i]);
fontSizeChoice.select(DEFAULT_SIZE);
cp.add(top, BorderLayout.NORTH);
Panel attrs = new Panel();
top.add(attrs);
attrs.setLayout(new GridLayout(0, 1));
attrs.add(bold = new Checkbox("Bold", false));
attrs.add(italic = new Checkbox("Italic", false));
previewArea = new JLabel(displayText, JLabel.CENTER);
previewArea.setSize(200, 50);
cp.add(previewArea, BorderLayout.CENTER);
Panel bot = new Panel();
JButton okButton = new JButton("Apply");
bot.add(okButton);
okButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
previewFont();
dispose();
setVisible(false);
}
});
JButton pvButton = new JButton("Preview");
bot.add(pvButton);
pvButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
previewFont();
}
});
JButton canButton = new JButton("Cancel");
bot.add(canButton);
canButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
// Set all values to null. Better: restore previous.
resultFont = null;
resultName = null;
resultSize = 0;
isBold = false;
isItalic = false;
dispose();
setVisible(false);
}
});
cp.add(bot, BorderLayout.SOUTH);
previewFont(); // ensure view is up to date!
pack();
setLocation(100, 100);
}
/**
* Called from the action handlers to get the font info, build a font, and
* set it.
*/
protected void previewFont() {
resultName = fontNameChoice.getSelectedItem();
String resultSizeName = fontSizeChoice.getSelectedItem();
int resultSize = Integer.parseInt(resultSizeName);
isBold = bold.getState();
isItalic = italic.getState();
int attrs = Font.PLAIN;
if (isBold)
attrs = Font.BOLD;
if (isItalic)
attrs |= Font.ITALIC;
resultFont = new Font(resultName, attrs, resultSize);
// System.out.println("resultName = " + resultName + "; " +
// "resultFont = " + resultFont);
previewArea.setFont(resultFont);
pack(); // ensure Dialog is big enough.
}
/** Retrieve the selected font name. */
public String getSelectedName() {
return resultName;
}
/** Retrieve the selected size */
public int getSelectedSize() {
return resultSize;
}
/** Retrieve the selected font, or null */
public Font getSelectedFont() {
return resultFont;
}
/** Simple main program to start it running */
public static void main(String[] args) {
final JFrame f = new JFrame("FontChooser Startup");
final FontChooser2 fc = new FontChooser2(f);
final Container cp = f.getContentPane();
cp.setLayout(new GridLayout(0, 1)); // one vertical column
JButton theButton = new JButton("Change font");
cp.add(theButton);
final JLabel theLabel = new JLabel("Java is great!", JLabel.CENTER);
cp.add(theLabel);
// Now that theButton and theLabel are ready, make the action listener
theButton.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
fc.setVisible(true);
Font myNewFont = fc.getSelectedFont();
System.out.println("You chose " + myNewFont);
theLabel.setFont(myNewFont);
f.pack(); // adjust for new size
fc.dispose();
}
});
f.setSize(150, 100);
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
}
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