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/*

:49  2001

Copyright (C) 2000 Andrew Sorensen & Andrew Brown

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or any
later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

// addtions by Sean Hayes

package jm.midi.event;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

/**
 * @author Andrew Sorensen
 */

public final class KeySig implements Event {
    private static final short ID = 022;
    private int time;
    private int keySig;
    private int keyQual;

    //------------------------------------------
    //Constructors

    /**
     * Default Constructor
     */
    public KeySig() {
        this.time = 0;
        this.keySig = 0;
        this.keyQual = 0;
    }

    public KeySig(int keySig, int keyQual) {
        this.time = 0;
        this.keySig = keySig;
        this.keyQual = keyQual;
    }

    public KeySig(int time, int keySig, int keyQual) {
        this.time = time;
        this.keySig = keySig;
        this.keyQual = keyQual;
    }

    //--------------------------------------------
    public int getKeyQuality() {
        return this.keyQual;
    }

    public void setKeyQuality(int keyQuality) {
        this.keyQual = keyQuality;
    }

    public int getKeySig() {
        return this.keySig;
    }

    public void setKeySig(int keySig) {
        this.keySig = keySig;
    }

    //-----------------------------------------------
    //time
    public int getTime() {
        return time;
    }

    public void setTime(int time) {
        this.time = time;
    }

    //----------------------------------------------
    //Return Id
    public short getID() {
        return ID;
    }

    //----------------------------------------------
    // Write the contents of this object out to disk
    //----------------------------------------------
    public int write(DataOutputStream dos) throws IOException {
        int bytes_out = jm.midi.MidiUtil.writeVarLength(this.time, dos);
        dos.writeByte(0xFF);
        dos.writeByte(0x59);
        bytes_out += jm.midi.MidiUtil.writeVarLength(2, dos);
        dos.writeByte((byte) this.keySig);
        dos.writeByte((byte) this.keyQual);
        return bytes_out + 4;
    }

    /**
     * Read the contends of this objec in from disk.

     * Implemented by Sean T. Hayes
     *
     * @param dis stream containing midi events
     * @return the number of bytes read from dis
     * @throws java.io.IOException
     */
    public int read(DataInputStream dis) throws IOException {
        keySig = dis.readByte();
        keyQual = dis.readUnsignedByte();
        return 2;
    }

    //------------------------------------------------
    //Copy Object
    public Event copy() throws CloneNotSupportedException {
        KeySig event;
        try {
            event = (KeySig) this.clone();
        } catch (CloneNotSupportedException e) {
            System.out.println(e);
            event = new KeySig();
        }
        return event;
    }

    //---------------------------------------------------
    //Print
    public void print() {
        System.out.println("KeySig(022):             [time = " + this.time + "][keySig = " + this.keySig + "][keyQual = " + this.keyQual + "]");
    }
}