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/* |
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* JSampler - a java front-end for LinuxSampler |
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* |
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* Copyright (C) 2005-2007 Grigor Iliev <grigor@grigoriliev.com> |
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* |
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* This file is part of JSampler. |
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* |
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* JSampler is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 |
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* as published by the Free Software Foundation. |
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* |
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* JSampler 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 JSampler; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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|
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package org.jsampler.view.std; |
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|
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import java.awt.Point; |
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|
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import java.awt.event.ActionEvent; |
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import java.awt.event.ActionListener; |
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import java.awt.event.FocusAdapter; |
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import java.awt.event.FocusEvent; |
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import java.awt.event.KeyEvent; |
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|
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import java.beans.PropertyChangeEvent; |
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import java.beans.PropertyChangeListener; |
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|
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import java.util.Vector; |
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|
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import javax.swing.AbstractAction; |
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import javax.swing.JComponent; |
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import javax.swing.JSpinner; |
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import javax.swing.JTextField; |
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import javax.swing.KeyStroke; |
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import javax.swing.Popup; |
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import javax.swing.PopupFactory; |
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import javax.swing.SpinnerNumberModel; |
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|
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|
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import org.jsampler.CC; |
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import org.jsampler.HF; |
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import org.jsampler.JSPrefs; |
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|
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import static org.jsampler.view.std.StdPrefs.*; |
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|
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|
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/** |
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* |
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* @author Grigor Iliev |
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*/ |
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public class JSVolumeEditorPopup { |
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private final JComponent owner; |
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private Popup popup = null; |
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private final JSpinner spinner = new JSpinner(); |
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private boolean decibels = false; |
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|
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/* Used to prevent double committing on focus lost and to prevent commiting on cancel. */ |
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private boolean shouldCommit = true; |
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|
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private final Vector<ActionListener> listeners = new Vector<ActionListener>(); |
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|
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public static enum VolumeType { |
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MASTER, CHANNEL |
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} |
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|
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private VolumeType volumeType; |
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|
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/** |
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* Creates a new instance of <code>JSVolumeEditorPopup</code> |
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*/ |
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public |
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JSVolumeEditorPopup(final JComponent owner, VolumeType volumeType) { |
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if(owner == null) throw new IllegalArgumentException("owner should be non-null"); |
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this.owner = owner; |
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this.volumeType = volumeType; |
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java.awt.Dimension d = spinner.getPreferredSize(); |
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d.width = 55; |
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spinner.setPreferredSize(d); |
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|
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setNumberModel(); |
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|
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String s; |
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switch(volumeType) { |
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case MASTER: s = MAXIMUM_MASTER_VOLUME; break; |
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case CHANNEL: s = MAXIMUM_CHANNEL_VOLUME; break; |
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default: s = MAXIMUM_CHANNEL_VOLUME; |
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} |
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preferences().addPropertyChangeListener(s, new PropertyChangeListener() { |
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public void |
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propertyChange(PropertyChangeEvent e) { |
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setNumberModel(); |
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} |
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}); |
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|
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s = VOL_MEASUREMENT_UNIT_DECIBEL; |
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preferences().addPropertyChangeListener(s, new PropertyChangeListener() { |
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public void |
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propertyChange(PropertyChangeEvent e) { |
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setNumberModel(); |
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} |
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}); |
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} |
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|
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public void |
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show() { |
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if(popup != null) { |
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popup.hide(); |
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} |
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|
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shouldCommit = true; |
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|
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Point p = owner.getLocationOnScreen(); |
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int h = owner.getHeight(); |
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popup = PopupFactory.getSharedInstance().getPopup(owner, spinner, p.x, p.y + h); |
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popup.show(); |
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JComponent c = spinner.getEditor(); |
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((JSpinner.DefaultEditor)c).getTextField().requestFocus(); |
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} |
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|
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public void |
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hide() { |
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if(popup == null) return; |
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shouldCommit = false; |
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popup.hide(); |
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popup = null; |
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} |
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|
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public boolean |
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isVisible() { return popup != null; } |
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|
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public void |
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commit() { |
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try { spinner.commitEdit(); } |
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catch(Exception x) { } |
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if(shouldCommit) fireActionEvent(); |
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} |
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|
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public void |
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setCurrentVolume(float vol) { |
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int volPercentage = (int)(vol * 100); |
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if(decibels) { |
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double d = HF.percentsToDecibels(volPercentage); |
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if(d == Double.NEGATIVE_INFINITY) d = -100; |
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spinner.setValue(d); |
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} else { |
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spinner.setValue(volPercentage); |
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} |
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} |
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|
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public float |
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getVolumeFactor() { |
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if(decibels) { |
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double d = (Double)spinner.getValue(); |
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return HF.decibelsToFactor(d); |
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} else { |
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int i = (Integer)spinner.getValue(); |
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return HF.percentsToFactor(i); |
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} |
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} |
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|
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public void |
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addActionListener(ActionListener l) { listeners.add(l); } |
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|
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public void |
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removeActionListener(ActionListener l) { listeners.remove(l); } |
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|
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private void |
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setNumberModel() { |
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int volPercentage; |
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if(decibels) { |
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volPercentage = HF.decibelsToPercents((Double)spinner.getValue()); |
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} else { |
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volPercentage = (Integer)spinner.getValue(); |
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} |
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|
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String s; |
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switch(volumeType) { |
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case MASTER: s = MAXIMUM_MASTER_VOLUME; break; |
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case CHANNEL: s = MAXIMUM_CHANNEL_VOLUME; break; |
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default: s = MAXIMUM_CHANNEL_VOLUME; |
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} |
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|
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int max = preferences().getIntProperty(s); |
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decibels = preferences().getBoolProperty(VOL_MEASUREMENT_UNIT_DECIBEL); |
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SpinnerNumberModel model; |
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|
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if(decibels) { |
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double vol = HF.percentsToDecibels(volPercentage); |
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if(vol == Double.NEGATIVE_INFINITY) vol = -100; |
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model = new SpinnerNumberModel(vol, -100, HF.percentsToDecibels(max), 1); |
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spinner.setModel(model); |
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} else { |
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model = new SpinnerNumberModel(volPercentage, 0, max, 1); |
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spinner.setModel(model); |
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} |
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|
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reinstallEditorListeners(); |
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} |
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|
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private FocusAdapter focusListener = new FocusAdapter() { |
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public void |
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focusLost(FocusEvent e) { |
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if(e.getOppositeComponent() == owner) return; |
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|
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commit(); |
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hide(); |
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} |
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}; |
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|
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private ActionListener actionListener = new ActionListener() { |
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public void |
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actionPerformed(ActionEvent e) { |
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commit(); |
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hide(); |
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} |
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}; |
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|
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/** Invoked when the number model of the spinner is changed to reinstall listeners */ |
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private void |
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reinstallEditorListeners() { |
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JComponent c = spinner.getEditor(); |
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JTextField tf = ((JSpinner.DefaultEditor)c).getTextField(); |
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|
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tf.removeFocusListener(focusListener); // just in case the text field stays the same |
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tf.addFocusListener(focusListener); |
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|
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tf.removeActionListener(actionListener); |
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tf.addActionListener(actionListener); |
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|
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tf.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).remove ( |
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KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0) |
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); |
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|
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tf.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put ( |
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KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), |
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"cancelOp" |
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); |
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|
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tf.getActionMap().remove("cancelOp"); |
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tf.getActionMap().put ("cancelOp", new AbstractAction() { |
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public void |
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actionPerformed(ActionEvent e) { hide(); } |
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}); |
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|
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tf.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).remove ( |
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KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0) |
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); |
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|
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tf.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put ( |
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KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), |
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"commitVolume" |
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); |
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|
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tf.getActionMap().remove("commitVolume"); |
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tf.getActionMap().put ("commitVolume", new AbstractAction() { |
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public void |
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actionPerformed(ActionEvent e) { |
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commit(); |
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hide(); |
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} |
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}); |
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} |
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|
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private void |
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fireActionEvent() { |
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for(ActionListener l : listeners) l.actionPerformed(null); |
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} |
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|
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private static JSPrefs |
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preferences() { return CC.getViewConfig().preferences(); } |
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} |