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https://github.com/DSheirer/sdrtrunk.git
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Initial code check in continued
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dennis.sheirer
423
src/gui/control/JFrequencyControl.java
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423
src/gui/control/JFrequencyControl.java
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/*******************************************************************************
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* SDR Trunk
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* Copyright (C) 2014 Dennis Sheirer
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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******************************************************************************/
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package gui.control;
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import java.awt.Color;
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import java.awt.Cursor;
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import java.awt.Font;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.Toolkit;
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import java.awt.event.KeyEvent;
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import java.awt.event.KeyListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.text.ParseException;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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import javax.swing.BorderFactory;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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import javax.swing.JTextField;
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import log.Log;
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import net.miginfocom.swing.MigLayout;
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import source.tuner.FrequencyChangeListener;
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public class JFrequencyControl extends JPanel implements FrequencyChangeListener
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{
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private static final long serialVersionUID = 1L;
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private ArrayList<FrequencyChangeListener> mListeners =
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new ArrayList<FrequencyChangeListener>();
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private Color mHighlightColor = Color.YELLOW;
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private int mFrequency;
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private Cursor mBlankCursor;
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private HashMap<Integer,Digit> mDigits = new HashMap<Integer,Digit>();
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public JFrequencyControl()
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{
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init();
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}
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public JFrequencyControl( int value )
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{
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this();
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mFrequency = value;
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}
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private void init()
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{
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setLayout( new MigLayout( "", "[]0[]", "" ) );
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Font font = new Font( Font.MONOSPACED, Font.BOLD, 30 );
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for( int x = 9; x >= 0; x-- )
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{
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Digit digit = null;
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try
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{
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digit = new Digit( x );
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}
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catch ( ParseException e )
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{
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Log.error( "JFrequencyControl - parse exception "
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+ "constructing a digit - " + e.getLocalizedMessage() );
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}
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if( digit != null )
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{
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mDigits.put( x, digit );
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add( digit );
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digit.setFont( font );
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if( x == 6 )
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{
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JLabel period = new JLabel( "." );
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add( period );
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}
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}
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}
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add( new JLabel( " MHz" ) );
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/**
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* Create a blank cursor to use when the mouse is over the digits
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*/
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//Create an empty byte array
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byte[] imageByte = new byte[ 0 ];
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//Create image for cursor using empty array
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Image cursorImage = Toolkit.getDefaultToolkit().createImage( imageByte );
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mBlankCursor = Toolkit.getDefaultToolkit()
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.createCustomCursor( cursorImage, new Point( 0, 0 ), "cursor" );
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revalidate();
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}
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/**
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* Receives a frequency change event invoked by another control. We don't
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* rebroadcast this event, just set the control to indicate the new frequency.
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*/
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@Override
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public void frequencyChanged( int frequency, int bandwidth )
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{
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setFrequency( frequency, false );
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}
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/**
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* Loads the frequency into the display and optionally fires a change event
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* to all registered listeners
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*/
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public void setFrequency( int frequency, boolean fireChangeEvent )
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{
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mFrequency = frequency;
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for( Digit digit: mDigits.values() )
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{
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digit.setFrequency( frequency, fireChangeEvent );
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}
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}
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public int getFrequency()
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{
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return mFrequency;
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}
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private void updateFrequency()
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{
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int frequency = 0;
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for( Digit digit: mDigits.values() )
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{
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frequency += digit.getFrequency();
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}
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mFrequency = frequency;
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}
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private void fireFrequencyChanged()
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{
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updateFrequency();
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Iterator<FrequencyChangeListener> it = mListeners.iterator();
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while( it.hasNext() )
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{
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it.next().frequencyChanged( mFrequency, -1 );
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}
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}
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public void addListener( FrequencyChangeListener listener )
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{
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mListeners.add( listener );
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}
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public void removeListener( FrequencyChangeListener listener )
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{
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mListeners.remove( listener );
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}
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public class Digit extends JTextField
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{
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private static final long serialVersionUID = 1L;
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private int mPower = 0;
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private int mValue = 0;
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private Digit( int position ) throws ParseException
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{
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super( "0" );
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mPower = position;
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Listener listener = new Listener();
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this.addKeyListener( listener );
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this.addMouseListener( listener );
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this.addMouseWheelListener( listener );
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}
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/**
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* Sets this digit to the value of the column in frequency that corresponds
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* to the power (ie column) set for this digit. Optionally, fires a
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* value change event to all listeners.
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*/
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public void setFrequency( int frequency, boolean fireChangeEvent )
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{
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//Strip the digits higher than this one
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int lower = frequency % (int)( Math.pow( 10, mPower + 1) );
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//Set the value to int value of dividing by 10 to this power
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int value = (int)( lower / (int)( Math.pow( 10, mPower ) ) );
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set( value, fireChangeEvent );
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}
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public int getFrequency()
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{
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return mValue * (int)Math.pow( 10, mPower );
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}
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public void increment()
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{
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increment( true );
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}
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public void increment( boolean fireChangeEvent )
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{
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set( mValue + 1, fireChangeEvent );
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}
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public void decrement()
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{
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decrement( true );
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}
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public void decrement( boolean fireChangeEvent )
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{
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set( mValue - 1, fireChangeEvent );
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}
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/**
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* Convenience wrapper to change amount and fire change event
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*/
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private void set( int amount )
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{
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set( amount, true );
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}
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/**
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* Changes the value and optionally fires change event to listeners
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*/
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private void set( int amount, boolean fireChangeEvent )
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{
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mValue = amount;
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while( mValue < 0 )
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{
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mValue += 10;
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Digit nextHigherDigit = mDigits.get( mPower + 1 );
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if( nextHigherDigit != null )
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{
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nextHigherDigit.decrement( false );
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}
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}
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while( mValue > 9 )
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{
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mValue -= 10;
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Digit nextHigherDigit = mDigits.get( mPower + 1 );
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if( nextHigherDigit != null )
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{
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nextHigherDigit.increment( false );
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}
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}
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setText( String.valueOf( mValue ) );
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repaint();
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if( fireChangeEvent )
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{
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fireFrequencyChanged();
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}
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}
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private class Listener implements KeyListener,
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MouseListener,
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MouseWheelListener
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{
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@Override
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public void keyReleased( KeyEvent e )
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{
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int key = e.getKeyCode();
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switch( key )
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{
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case KeyEvent.VK_0:
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set( 0 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_1:
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set( 1 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_2:
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set( 2 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_3:
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set( 3 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_4:
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set( 4 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_5:
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set( 5 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_6:
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set( 6 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_7:
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set( 7 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_8:
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set( 8 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_9:
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set( 9 );
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_LEFT:
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Digit.this.transferFocusBackward();
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break;
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case KeyEvent.VK_RIGHT:
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Digit.this.transferFocus();
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break;
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case KeyEvent.VK_UP:
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increment();
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break;
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case KeyEvent.VK_DOWN:
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decrement();
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break;
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case KeyEvent.VK_TAB:
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break;
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default:
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set( mValue );
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break;
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}
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repaint();
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}
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@Override
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public void keyPressed( KeyEvent e ) {}
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@Override
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public void keyTyped( KeyEvent e ) {}
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@Override
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public void mouseClicked( MouseEvent e )
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{
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switch( e.getButton() )
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{
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case MouseEvent.BUTTON1:
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increment();
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break;
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case MouseEvent.BUTTON2:
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break;
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case MouseEvent.BUTTON3:
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decrement();
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break;
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}
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}
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public void mousePressed( MouseEvent e ) {}
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public void mouseReleased( MouseEvent e ) {}
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@Override
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public void mouseEntered( MouseEvent e )
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{
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Digit.this.setBackground( mHighlightColor );
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setCursor( mBlankCursor );
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repaint();
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}
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@Override
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public void mouseExited( MouseEvent e )
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{
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Digit.this.setBackground( Color.WHITE );
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setCursor( Cursor.getDefaultCursor() );
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repaint();
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}
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@Override
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public void mouseWheelMoved( MouseWheelEvent e )
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{
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set( mValue - e.getWheelRotation() );
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}
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}
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}
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}
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