Neujahrs-Geschenk

import java.awt.*;

public class UnicodeBrowser
{
    public static void main (String[] args) {
        new UnicodeBrowserFrame (true).show ();
    }
}

class MyMenu extends MenuItem
{
    Menu menu;
    MyMenu (Menu amenu, String label) {
        super (label);
        menu = amenu;
    }
}

class UnicodeBrowserFrame extends Frame
{

    static String hex = "0123456789abcdef";

    Toolkit toolkit = Toolkit.getDefaultToolkit ();
    boolean canexit;
    Menu mfile;
    MyMenu mffirst;
    MyMenu mfnext;
    MyMenu mfprev;
    MyMenu mflast;
    MyMenu mfnonn;
    MyMenu mfquit;
    Menu mfont;

    Font labfont;
    FontMetrics labfm;

    Font medfont;
    FontMetrics medfm;

    String disname;
    Font disfont = null;
    int dissize;
    FontMetrics disfm;
    FontMetrics trivfm;
    int trivwid;

    UnicodeBrowserCanvas[] bcs = new UnicodeBrowserCanvas[256];
    UnicodeBrowserTd td;
    UnicodeBrowserDisplay bd;
    int page;

    UnicodeBrowserFrame (boolean acanexit) {
        super ("Unicode Browser");
        canexit = acanexit;
        resize (635,420);
        addNotify ();
        MenuBar mb = new MenuBar ();
        mfile = new Menu ("File");
        mfile.add (mffirst = new MyMenu (mfile,"First Code Page"));
        mfile.add (mfnext  = new MyMenu (mfile,"Next Code Page" ));
        mfile.add (mfprev  = new MyMenu (mfile,"Previous Code Page"));
        mfile.add (mflast  = new MyMenu (mfile,"Last Code Page"));
        mfile.addSeparator ();
        mfile.add (mfnonn  = new MyMenu (mfile,"Next Non-Null Code Page"));
        mfile.addSeparator ();
        if (canexit)
            mfile.add (mfquit = new MyMenu (mfile,"Quit"));
        else
            mfile.add (mfquit = new MyMenu (mfile,"Close"));
        mb.add (mfile);
        mfont = new Menu ("Font");
        String[] fonts = toolkit.getFontList ();
        for (int i=0; i<fonts.length; i++)
            mfont.add ( new MyMenu (mfont,fonts[i]));
        mb.add (mfont);
        setMenuBar (mb);

        medfont = getGraphics ().getFont ();
        medfm = toolkit.getFontMetrics (medfont);
        disname = medfont.getName ();
        labfont = new Font (disname,0,medfont.getSize ()-2);
        labfm = toolkit.getFontMetrics (labfont);

        Panel pan = new Panel ();
        pan.setLayout ( new GridLayout (16,16) );
        for (int i=0; i<16; i++)
            for (int j=0; j<16; j++)
            {
                int code = 16*i + j;
                UnicodeBrowserCanvas newbc = new UnicodeBrowserCanvas (this,code);
                pan.add (newbc);
                bcs[code] = newbc;
            }
        setLayout ( new BorderLayout () );
        add ("North",td = new UnicodeBrowserTd (this));
        add ("South",bd = new UnicodeBrowserDisplay (this));
        add ("Center",pan);
        page = 0;
    }

    public boolean handleEvent (Event evt) {
        if ( (Event.WINDOW_DESTROY==evt.id) && (this==evt.target) )
        {
            quit ();
        }
        return(super.handleEvent (evt));
    }

    public void redraw () {
        td.paint (td.getGraphics ());
        bd.paint (bd.getGraphics ());
        for (int i=0; i<256; i++)
            bcs[i].paint (bcs[i].getGraphics ());
    }

    public boolean action (Event evt, Object obj) {
        MyMenu item = (MyMenu) evt.target;
        if ( mfile == item.menu )
        {
            if ( mffirst == item )
            {
                page = 0;
                redraw ();
            } else if ( mfnext == item )
            {
                page++;
                redraw ();
            } else if ( mfprev == item )
            {
                if (page > 0)
                    page--;
                redraw ();
            } else if ( mflast == item )
            {
                page = 255;
                redraw ();
            } else if ( mfnonn == item )
            {
            } else if ( mfquit == item )
            {
                quit ();
            }
            return true;
        } else if ( mfont == item.menu )
        {
            disname = (String) obj;
            newfont ();
            redraw ();
            return true;
        }
        return false;
    }

    void quit () {
        if (canexit)
            System.exit (0);
        else
            dispose ();
    }

    void newfont ()  {
        //      System.err.println(
        //          "newfont: dissize = " + dissize +
        //          " frame_height = " + size().height +
        //          " frame_width = "  + size().width);
        disfont = new Font (disname,0,dissize);
        disfm = toolkit.getFontMetrics (disfont);
        trivfm = toolkit.getFontMetrics (new Font (disname,0,50));
        trivwid = trivfm.charWidth ('\uFEFF');
        td.paint (td.getGraphics ());
    }

}

class UnicodeBrowserCanvas extends Canvas
{

    UnicodeBrowserFrame frame;
    int code;

    UnicodeBrowserCanvas (UnicodeBrowserFrame aUnicodeBrowserFrame, int acode)
    {
        frame = aUnicodeBrowserFrame;
        code = acode;
    }

    public void paint (Graphics g)
    {
        char codepoint = (char) ((frame.page<<8) | code);
        Dimension dim = size ();
        if  ((dim.height-10) != frame.dissize)
        {
            frame.dissize = dim.height - 10;
            frame.newfont ();
        }
        g.clearRect (0,0,dim.width-1,dim.height-1);
        g.drawRect (0,0,dim.width-1,dim.height-1);
        if ( ('\uFEFF'==codepoint) ||
        (frame.trivfm.charWidth (codepoint)!=frame.trivwid) )
        {
            g.drawRect (2,2,dim.width-5,dim.height-5);
        }
        char[] data = new char[1];
        data[0] = codepoint;
        int wid = frame.disfm.charsWidth (data,0,1);
        int masc = frame.disfm.getMaxAscent ();
        int mdes = frame.disfm.getMaxDescent ();
        int lwid = frame.labfm.getMaxAdvance ();
        int xpos = (dim.width+lwid-wid)/2;
        int ypos = (dim.height+masc-mdes)/2;
        g.setFont (frame.disfont);
        g.drawChars (data,0,1,xpos,ypos);
        g.setFont (frame.labfont);
        g.drawString (""+wid,4,dim.height-4);
        String point = "" +
        UnicodeBrowserFrame.hex.charAt ( (code>>4) & 0x0F ) +
        UnicodeBrowserFrame.hex.charAt ( code & 0x0F );
        g.drawString (point,4,frame.labfm.getMaxAscent ()+4);
    }

}

class UnicodeBrowserTd extends Canvas
{
    Dimension psize;
    UnicodeBrowserFrame frame;
    UnicodeBrowserTd (UnicodeBrowserFrame aUnicodeBrowserFrame)
    {
        frame = aUnicodeBrowserFrame;
        int hite = frame.medfm.getMaxAscent () +
        frame.medfm.getMaxDescent () +
        5*frame.medfm.getLeading ();
        psize = new Dimension (600,hite);
    }
    public Dimension preferredSize ()
    {
        //      System.err.println("UnicodeBrowserTd.preferredSize returns "+psize.height);
        return psize;
    }
    public Dimension minimumSize ()
    {
        //      System.err.println("UnicodeBrowserTd.minimumSize returns "+psize.height);
        return psize;
    }
    public void paint (Graphics g)
    {
        Dimension dim = size ();
        g.clearRect (0,0,dim.width,dim.height);
        if ( null != frame.disfont )
        {
            g.setColor (Color.black);
            g.setFont (frame.medfont);
            int ypos = frame.medfm.getLeading () +
            frame.medfm.getMaxAscent ();
            g.drawString (frame.disfont.toString (),10,ypos);
        }
    }
}

class UnicodeBrowserDisplay extends Canvas
{
    Dimension psize;
    UnicodeBrowserFrame frame;
    UnicodeBrowserDisplay (UnicodeBrowserFrame aUnicodeBrowserFrame)
    {
        frame = aUnicodeBrowserFrame;
        int hite = frame.medfm.getMaxAscent () +
        frame.medfm.getMaxDescent () +
        5*frame.medfm.getLeading ();
        psize = new Dimension (600,hite);
    }
    public Dimension preferredSize ()
    {
        //      System.err.println("UnicodeBrowserDisplay.preferredSize returns "+psize.height);
        return psize;
    }
    public Dimension minimumSize ()
    {
        //      System.err.println("UnicodeBrowserDisplay.minimumSize returns "+psize.height);
        return psize;
    }
    public void paint (Graphics g)
    {
        Dimension dim = size ();
        g.clearRect (0,0,dim.width,dim.height);
        g.setFont (frame.medfont);
        int ypos = frame.medfm.getLeading () +
        frame.medfm.getMaxAscent ();
        String data = "Code page " +
        UnicodeBrowserFrame.hex.charAt ( (frame.page>>4) & 0x0F ) +
        UnicodeBrowserFrame.hex.charAt ( frame.page & 0x0F ) +
        " " + upn (frame.page);
        g.drawString (data,10,ypos);
    }
    String upn (int page)
    {
        switch (page)
        {
            case 0x00: return "Basic Latin & Latin-1 Supplement";
            case 0x01: return "Latin Extended A & Latin Extended B (cont)";
            case 0x02: return "Latin Extended B (cont) & IPA & Spacing Mod";
            case 0x03: return "Combining Diacriticals & Greek";
            case 0x04: return "Cyrillic";
            case 0x05: return "? & Armenian & Hebrew";
            case 0x06: return "Arabic";

            case 0x09: return "Devanagari & Bengali";
            case 0x0A: return "Gurmukhi & Gujarati";
            case 0x0B: return "Oriya & Tamil";
            case 0x0C: return "Telugu & Kannada";
            case 0x0D: return "Malayalam";
            case 0x0E: return "Thai & Lao";
            case 0x0F: return "Tibetan";
            case 0x10: return "Georgian";
            case 0x11: return "Hangul Jamo";

            case 0x1E: return "Latin Extended Additional";
            case 0x1F: return "Greek Extended";
            case 0x20: return "Punct & Super & Sub & Currency & Combin";
            case 0x21: return "Letterlikes & Number Forms & Arrows";
            case 0x22: return "Mathematical Operators";
            case 0x23: return "Miscellaneous Technical";
            case 0x24: return "Control Picts & OCR & Enclosed Alpha";
            case 0x25: return "Box Drawing & Block Elts & Geom Shapes";
            case 0x26: return "Miscellaneous Symbols";
            case 0x27: return "Dingbats";

            case 0x30: return "CJK Symbols/Punct & Hiragana & Katakana";
            case 0x31: return "Bopomofo & Hangul Compat & Kanbun";
            case 0x32: return "Enclosed CJK Letters and Months";
            case 0x33: return "CJK Compatability";

            case 0x4E: case 0x4F:
            case 0x50: case 0x51: case 0x52: case 0x53:
            case 0x54: case 0x55: case 0x56: case 0x57:
            case 0x58: case 0x59: case 0x5A: case 0x5B:
            case 0x5C: case 0x5D: case 0x5E: case 0x5F:
            case 0x60: case 0x61: case 0x62: case 0x63:
            case 0x64: case 0x65: case 0x66: case 0x67:
            case 0x68: case 0x69: case 0x6A: case 0x6B:
            case 0x6C: case 0x6D: case 0x6E: case 0x6F:
            case 0x70: case 0x71: case 0x72: case 0x73:
            case 0x74: case 0x75: case 0x76: case 0x77:
            case 0x78: case 0x79: case 0x7A: case 0x7B:
            case 0x7C: case 0x7D: case 0x7E: case 0x7F:
            case 0x80: case 0x81: case 0x82: case 0x83:
            case 0x84: case 0x85: case 0x86: case 0x87:
            case 0x88: case 0x89: case 0x8A: case 0x8B:
            case 0x8C: case 0x8D: case 0x8E: case 0x8F:
            case 0x90: case 0x91: case 0x92: case 0x93:
            case 0x94: case 0x95: case 0x96: case 0x97:
            case 0x98: case 0x99: case 0x9A: case 0x9B:
            case 0x9C: case 0x9D: case 0x9E: case 0x9F:
                return "CJK Unified Ideographs";

            case 0xAC: case 0xAD: case 0xAE: case 0xAF:
            case 0xB0: case 0xB1: case 0xB2: case 0xB3:
            case 0xB4: case 0xB5: case 0xB6: case 0xB7:
            case 0xB8: case 0xB9: case 0xBA: case 0xBB:
            case 0xBC: case 0xBD: case 0xBE: case 0xBF:
            case 0xC0: case 0xC1: case 0xC2: case 0xC3:
            case 0xC4: case 0xC5: case 0xC6: case 0xC7:
            case 0xC8: case 0xC9: case 0xCA: case 0xCB:
            case 0xCC: case 0xCD: case 0xCE: case 0xCF:
            case 0xD0: case 0xD1: case 0xD2: case 0xD3:
            case 0xD4: case 0xD5: case 0xD6: case 0xD7:
                return "Hangul Syllables";
            case 0xD8: case 0xD9: case 0xDA: case 0xDB:
                return "High & Private Use High Surrogates";
            case 0xDC: case 0xDD: case 0xDE: case 0xDF:
                return "Low Surrogates";
            case 0xE0: case 0xE1: case 0xE2: case 0xE3:
            case 0xE4: case 0xE5: case 0xE6: case 0xE7:
            case 0xE8: case 0xE9: case 0xEA: case 0xEB:
            case 0xEC: case 0xED: case 0xEE: case 0xEF:
            case 0xF0: case 0xF1: case 0xF2: case 0xF3:
            case 0xF4: case 0xF5: case 0xF6: case 0xF7:
            case 0xF8:
                return "Private Use";
            case 0xF9: case 0xFA:
                return "CJK Compatability Ideographs";
            case 0xFB: return "Alphabetic Presentation & Arabic Pres.";
            case 0xFC: case 0xFD:
                return "Arabic Presentation Forms";
            case 0xFE:
                return "Cmb Half & CJK Comp & Small Form & Arabic Pres";
            case 0xFF: return "HalfWidth & FullWidth & Specials";
            default:   return "(Unknown Unicode Page " + page + ")";
        }
    }
}

CengizS

a) Wo ist die Frage?
b) Warum Daumen-runter?

1.) Das war nur ein Geschenk von mir an euch zum Jahresanfang 2003. Daher gibt es keine Frage.
2.) Sollte eigentlich nen hoher Daumer sein. Hab mich verklickt.