// FontBrowser - look at the available fonts
//
// Copyright (C)1996,1998 by Jef Poskanzer <jef@mail.acme.com>. All rights reserved.
//
// 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.

import java.applet.*;
import java.awt.*;

public class FontBrowser extends Applet
    {

    /// Applet info.
    public String getAppletInfo()
	{
	return getClass().getName() +
" - Copyright (C) 1996 by Jef Poskanzer <jef@mail.acme.com>.  All rights reserved.";
	}

    private Choice fontChoice;
    private Choice styleChoice;
    private Choice sizeChoice;
    private TextArea textArea;

    /// Called when the applet is first created.
    public void init()
	{
	Acme.GuiUtils.handleBgcolor( this );

	setLayout( new BorderLayout() );

	Panel choicePanel = new Panel();
	choicePanel.setLayout( new FlowLayout( FlowLayout.LEFT ) );

	String[] fontNames = getToolkit().getFontList();
	String defaultFontName = getFont().getName();
	fontChoice = new Choice();
	fontChoice.addItem( "" );
	fontChoice.select( 0 );
	for ( int i = 0; i < fontNames.length; ++i )
	    {
	    fontChoice.addItem( fontNames[i] );
	    if ( fontNames[i].equals( defaultFontName ) )
		fontChoice.select( i + 1 );
	    }
	choicePanel.add( fontChoice );

	styleChoice = new Choice();
	styleChoice.addItem( "PLAIN" );
	styleChoice.addItem( "BOLD" );
	styleChoice.addItem( "ITALIC" );
	styleChoice.addItem( "BOLD ITALIC" );
	styleChoice.select( 0 );
	choicePanel.add( styleChoice );

	sizeChoice = new Choice();
	sizeChoice.addItem( "6" );
	sizeChoice.addItem( "8" );
	sizeChoice.addItem( "10" );
	sizeChoice.addItem( "12" );
	sizeChoice.addItem( "15" );
	sizeChoice.addItem( "20" );
	sizeChoice.addItem( "25" );
	sizeChoice.select( 3 );
	choicePanel.add( sizeChoice );

	add( "North", choicePanel );

	textArea = new TextArea();
	textArea.setEditable( false );
	add( "Center", textArea );

	browse();
	}
    
    /// Event handler.
    public boolean action( Event event, Object what )
	{
	if ( event.target == fontChoice || event.target == styleChoice ||
	     event.target == sizeChoice )
	    {
	    browse();
	    return true;
	    }
	return false;
	}

    private void browse()
	{
	textArea.setText( "" );
	String fontName = fontChoice.getSelectedItem();
	if ( fontName.equals( "" ) )
	    return;

	String styleStr = styleChoice.getSelectedItem();
	int style;
	if ( styleStr.equals( "PLAIN" ) )
	    style = Font.PLAIN;
	else if ( styleStr.equals( "BOLD" ) )
	    style = Font.BOLD;
	else if ( styleStr.equals( "ITALIC" ) )
	    style = Font.ITALIC;
	else if ( styleStr.equals( "BOLD ITALIC" ) )
	    style = Font.BOLD | Font.ITALIC;
	else
	    style = Font.PLAIN;
	
	String sizeStr = sizeChoice.getSelectedItem();
	int size = Integer.parseInt( sizeStr );

	Font font = new Font( fontName, style, size );

	textArea.setFont( font );
	textArea.appendText( "family: " + font.getFamily() + "\n" );
	textArea.appendText( "name: " + font.getName() + "\n" );
	textArea.appendText(
	    "style:" +
	    ( font.isPlain() ? " PLAIN" : "" ) +
	    ( font.isBold() ? " BOLD" : "" ) +
	    ( font.isItalic() ? " ITALIC" : "" ) +
	    "\n" );
	textArea.appendText( "size: " + font.getSize() + "\n" );
	textArea.appendText( "\n" );
	FontMetrics fm = textArea.getFontMetrics( font );
	if ( fm == null )
	    return;
	textArea.appendText( "leading: " + fm.getLeading() + "\n" );
	textArea.appendText( "ascent: " + fm.getAscent() + "\n" );
	textArea.appendText( "descent: " + fm.getDescent() + "\n" );
	textArea.appendText( "height: " + fm.getHeight() + "\n" );
	textArea.appendText( "max ascent: " + fm.getMaxAscent() + "\n" );
	textArea.appendText( "max descent: " + fm.getMaxDescent() + "\n" );
	textArea.appendText( "max advance: " + fm.getMaxAdvance() + "\n" );

	int[] widths = fm.getWidths();
	boolean fixed = true;
	for ( int i = 33; i <= 126; ++i )
	    if ( widths[i] != widths[32] )
		{
		fixed = false;
		break;
		}
	if ( fixed )
	    textArea.appendText( "fixed width\n" );
	else
	    textArea.appendText( "variable width\n" );

	textArea.appendText( "\n" );
	textArea.appendText( " !\"#$%&'()*+,-./0123456789:;<=>?\n" );
	textArea.appendText( "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_\n" );
	textArea.appendText( "`abcdefghijklmnopqrstuvwxyz{|}~\n" );
	}

    /// Main program, so we can run as an application too.
    public static void main( String[] args )
	{
	new Acme.MainFrame( new FontBrowser(), args, 400, 400 );
	}

    }