/*********************************************

	Copyright © 2001 Jason Lamport.
	All rights reserved.

----------------------

V_Knob  
creates a digital readout

*******************************************/

package com.strangelight.v4control;

import com.strangelight.*;
import com.strangelight.salsa.*;

import java.awt.*;

public class V_Knob extends J_Panel {

	public V_Knob( int chnl, int cntrlr, int val ) {
		channel = new J_DigitalDisplay(2, J_DigitalDisplay.BLUE_ON_BLACK_8x13 );
		controller = new J_DigitalDisplay(3, J_DigitalDisplay.BLUE_ON_BLACK_8x13);
		value = new J_DigitalDisplay(3, J_DigitalDisplay.BLUE_ON_BLACK_8x13);
		output_bus = new J_OutputBus_Popup();
		
		set_channel(chnl);
		set_controller(cntrlr);
		set_value(val);
		
		add_at(output_bus, 0,0,2,1);
		add_at(channel, 0,1 );
		add_at(controller, 1,1 );
		add_at(value, 0,2,2,1 );
		
		setSize(getPreferredSize());
		
		D.bug(this);
		
		setVisible(true);
	}
		
	public void set_channel(int ch) {
		if ( (ch > 16) || (ch < 1) ) throw new E_OutOfBounds(
			ch + " is not a valid MIDI channel"
		);
		channel.set_value(ch);
		D.bug("output_bus.getSize()" + output_bus.getSize() );
	}
	
	public void set_controller(int cntrllr) {
		if ( (cntrllr > J_OMS.MAX_CONTROLLER_NUM) || (cntrllr < J_OMS.MIN_CONTROLLER_NUM) ) throw new E_OutOfBounds(
			cntrllr + " is not a valid MIDI controller"
		);
		controller.set_value(cntrllr);
	}
	
	public void set_value(int val) {
		if ( (val > J_OMS.MAX_CONTROLLER_VALUE) || (val < J_OMS.MIN_CONTROLLER_VALUE) ) throw new E_OutOfBounds(
			val + " is not a valid MIDI channel"
		);
		value.set_value(val);
	}
	
	public void paint(Graphics g) {
		super.paint(g);
	}
	
	private J_DigitalDisplay channel, controller, value;
	private J_OutputBus_Popup	output_bus;
	
}