mirror of git://gcc.gnu.org/git/gcc.git
963 lines
28 KiB
Java
963 lines
28 KiB
Java
/* BasicProgressBarUI.java --
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Copyright (C) 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath 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 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing.plaf.basic;
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.Graphics;
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import java.awt.Insets;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.awt.Shape;
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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.ComponentAdapter;
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import java.awt.event.ComponentEvent;
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import java.awt.event.ComponentListener;
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import java.awt.geom.AffineTransform;
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import java.beans.PropertyChangeEvent;
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import java.beans.PropertyChangeListener;
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import javax.swing.JComponent;
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import javax.swing.JProgressBar;
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import javax.swing.LookAndFeel;
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import javax.swing.SwingConstants;
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import javax.swing.SwingUtilities;
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import javax.swing.Timer;
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import javax.swing.UIManager;
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import javax.swing.event.AncestorEvent;
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import javax.swing.event.AncestorListener;
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import javax.swing.event.ChangeEvent;
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import javax.swing.event.ChangeListener;
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import javax.swing.plaf.ComponentUI;
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import javax.swing.plaf.ProgressBarUI;
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/**
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* The Basic Look and Feel UI delegate for the
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* JProgressBar.
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*/
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public class BasicProgressBarUI extends ProgressBarUI
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{
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/**
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* A helper class that listens for ChangeEvents
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* from the progressBar's model.
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*
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* @specnote Apparently this class was intended to be protected,
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* but was made public by a compiler bug and is now
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* public for compatibility.
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*/
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public class ChangeHandler implements ChangeListener
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{
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/**
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* Called every time the state of the model changes.
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*
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* @param e The ChangeEvent given by the model.
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*/
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public void stateChanged(ChangeEvent e)
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{
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// Nothing to do but repaint.
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progressBar.repaint();
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}
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}
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/**
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* This helper class is used to listen for
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* PropertyChangeEvents from the progressBar.
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*/
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private class PropertyChangeHandler implements PropertyChangeListener
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{
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/**
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* Called every time the properties of the
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* progressBar change.
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*
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* @param e The PropertyChangeEvent given by the progressBar.
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*/
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public void propertyChange(PropertyChangeEvent e)
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{
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// Only need to listen for indeterminate changes.
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// All other things are done on a repaint.
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if (e.getPropertyName().equals("indeterminate"))
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if (((Boolean) e.getNewValue()).booleanValue()
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&& progressBar.isShowing())
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startAnimationTimer();
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else
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stopAnimationTimer();
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}
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}
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/**
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* Receives notification when the progressbar is becoming visible or
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* invisible and starts/stops the animation timer accordingly.
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*
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* @author Roman Kennke (kennke@aicas.com)
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*/
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private class AncestorHandler implements AncestorListener
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{
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/**
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* Receives notification when the progressbar is becoming visible. This
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* starts the animation timer if the progressbar is indeterminate.
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*
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* @param event the ancestor event
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*/
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public void ancestorAdded(AncestorEvent event)
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{
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if (progressBar.isIndeterminate())
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startAnimationTimer();
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}
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/**
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* Receives notification when the progressbar is becoming invisible. This
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* stops the animation timer if the progressbar is indeterminate.
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*
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* @param event the ancestor event
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*/
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public void ancestorRemoved(AncestorEvent event)
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{
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stopAnimationTimer();
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}
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/**
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* Receives notification when an ancestor has been moved. We don't need to
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* do anything here.
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*/
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public void ancestorMoved(AncestorEvent event)
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{
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// Nothing to do here.
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}
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}
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/**
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* This helper class is used to listen for
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* the animationTimer's intervals. On every interval,
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* the bouncing box should move.
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*/
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private class Animator implements ActionListener
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{
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/**
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* Called every time the animationTimer reaches
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* its interval.
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*
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* @param e The ActionEvent given by the timer.
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*/
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public void actionPerformed(ActionEvent e)
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{
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// Incrementing the animation index will cause
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// a repaint.
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incrementAnimationIndex();
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}
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}
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/**
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* Receives notification when the size of the progress bar changes and
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* invalidates the layout information for the box calculation in
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* {@link BasicProgressBarUI#getBox(Rectangle)}.
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*
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* @author Roman Kennke (kennke@aicas.com)
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*/
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private class ComponentHandler extends ComponentAdapter
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{
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/**
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* Receives notification when the size of the progress bar changes and
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* invalidates the layout information for the box calculation in
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* {@link BasicProgressBarUI#getBox}.
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*
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* @param e the component event
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*/
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public void componentResized(ComponentEvent e)
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{
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boxDependent = -1;
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boxIndependent = -1;
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incr = -1;
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}
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}
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/**
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* Holds the value of the bouncing box that is returned by {@link #getBox}.
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*
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* @since 1.5
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*/
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protected Rectangle boxRect;
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/** The timer used to move the bouncing box. */
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private transient Timer animationTimer;
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// The total number of frames must be an even number.
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// The total number of frames is calculated from
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// the cycleTime and repaintInterval given by
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// the basic Look and Feel defaults.
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//
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// +-----------------------------------------------+
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// | frame0 | frame1 | frame2 | frame 3 | frame 4 |
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// | | frame7 | frame6 | frame 5 | |
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// +-----------------------------------------------+
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/** The current animation index. */
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private transient int animationIndex;
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/** The total number of frames.*/
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private transient int numFrames;
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/** The helper that moves the bouncing box. */
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private transient Animator animation;
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/** The helper that listens for property change events. */
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private transient PropertyChangeHandler propertyListener;
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/** The Listener for the model. */
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protected ChangeListener changeListener;
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/** The progressBar for this UI. */
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protected JProgressBar progressBar;
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/**
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* The size of the box returned by {@link #getBox} in the orientation
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* direction of the progress bar. This is package private to avoid accessor
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* method.
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*/
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transient double boxDependent = - 1;
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/**
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* The size of the box returned by {@link #getBox} against the orientation
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* direction of the progress bar. This is package private to avoid accessor
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* method.
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*/
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transient int boxIndependent = - 1;
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/**
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* The increment for box animation. This is package private to avoid accessor
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* method.
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*/
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transient double incr = -1;
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/** The length of the cell. The cell is the painted part. */
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private transient int cellLength;
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/** The gap between cells. */
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private transient int cellSpacing;
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/** The color of the text when the bar is not over it.*/
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private transient Color selectionBackground;
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/** The color of the text when the bar is over it. */
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private transient Color selectionForeground;
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/**
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* Listens for notification when the component becomes showing and
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* starts/stops the animation timer.
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*/
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private AncestorListener ancestorListener;
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/**
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* Listens for resize events on the progress bar and invalidates some
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* layout info.
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*/
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private ComponentListener componentListener;
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/**
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* Creates a new BasicProgressBarUI object.
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*/
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public BasicProgressBarUI()
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{
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super();
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}
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/**
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* Creates a new BasicProgressBarUI for the component.
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*
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* @param x The JComponent to create the UI for.
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*
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* @return A new BasicProgressBarUI.
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*/
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public static ComponentUI createUI(JComponent x)
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{
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return new BasicProgressBarUI();
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}
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/**
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* This method returns the length of the bar (from the minimum)
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* in pixels (or units that the Graphics object draws in) based
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* on the progressBar's getPercentComplete() value.
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*
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* @param b The insets of the progressBar.
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* @param width The width of the progressBar.
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* @param height The height of the progressBar.
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*
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* @return The length of the bar that should be painted in pixels.
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*/
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protected int getAmountFull(Insets b, int width, int height)
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{
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double percentDone = progressBar.getPercentComplete();
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if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
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return (int) (percentDone * (width - b.left - b.right));
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else
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return (int) (percentDone * (height - b.top - b.bottom));
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}
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/**
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* The current animation index.
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*
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* @return The current animation index.
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*/
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protected int getAnimationIndex()
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{
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return animationIndex;
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}
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/**
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* This method returns the size and position of the bouncing box
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* for the current animation index. It stores the values in the
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* given rectangle and returns it. It returns null if no box should
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* be drawn.
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*
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* @param r The bouncing box rectangle.
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*
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* @return The bouncing box rectangle.
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*/
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protected Rectangle getBox(Rectangle r)
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{
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if (!progressBar.isIndeterminate())
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return null;
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if (r == null)
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r = new Rectangle();
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Rectangle vr = new Rectangle();
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SwingUtilities.calculateInnerArea(progressBar, vr);
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// Recalculate the metrics only when size of the progressbar has changed.
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if (incr == -1 || boxDependent == -1 || boxIndependent == -1)
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{
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//numFrames has to be an even number as defined by spec.
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int iterations = numFrames / 2;
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if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
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{
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boxDependent = vr.width / 6.;
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incr = ((double) (vr.width - boxDependent)) / (double) iterations;
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boxIndependent = vr.height;
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}
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else
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{
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boxDependent = vr.height / 6.;
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incr = ((double) (vr.height - boxDependent)) / (double) iterations;
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boxIndependent = vr.width;
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}
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}
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int index = getAnimationIndex();
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if (animationIndex > numFrames / 2)
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index = numFrames - getAnimationIndex();
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if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
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{
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r.x = vr.x + (int) (incr * index);
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r.y = vr.y;
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r.width = (int) boxDependent;
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r.height = (int) boxIndependent;
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}
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else
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{
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r.x = vr.x;
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r.y = vr.height - (int) (incr * index) + vr.y - (int) boxDependent;
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r.width = (int) boxIndependent;
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r.height = (int) boxDependent;
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}
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return r;
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}
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/**
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* This method returns the length of the cells.
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*
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* @return The cell length.
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*/
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protected int getCellLength()
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{
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return cellLength;
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}
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/**
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* This method returns the spacing between cells.
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*
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* @return The cell gap.
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*/
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protected int getCellSpacing()
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{
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return cellSpacing;
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}
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/**
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* This method returns the maximum size of the JComponent.
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* If it returns null, it is up to the LayoutManager
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* to give it a size.
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*
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* @param c The component to find a maximum size for.
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*
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* @return The maximum size.
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*/
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public Dimension getMaximumSize(JComponent c)
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{
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Insets insets = c.getInsets();
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Dimension ret;
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int orientation = progressBar.getOrientation();
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if (orientation == JProgressBar.VERTICAL)
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{
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ret = getPreferredInnerVertical();
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ret.height = Short.MAX_VALUE;
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ret.width += insets.left + insets.right;
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}
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else
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{
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ret = getPreferredInnerHorizontal();
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ret.width = Short.MAX_VALUE;
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ret.height += insets.top + insets.bottom;
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}
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return ret;
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}
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/**
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* This method returns the minimum size of the JComponent.
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* If it returns null, it is up to the LayoutManager to
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* give it a size.
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*
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* @param c The component to find a minimum size for.
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*
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* @return The minimum size.
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*/
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public Dimension getMinimumSize(JComponent c)
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{
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Insets insets = c.getInsets();
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Dimension ret;
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int orientation = progressBar.getOrientation();
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if (orientation == JProgressBar.VERTICAL)
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{
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ret = getPreferredInnerVertical();
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ret.height = 10;
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ret.width += insets.left + insets.right;
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}
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else
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{
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ret = getPreferredInnerHorizontal();
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ret.width = 10;
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ret.height += insets.top + insets.bottom;
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}
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return ret;
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}
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/**
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* This method returns the preferred size of the inner
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* rectangle (the bounds without the insets) if the
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* progressBar is horizontal.
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*
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* @return The preferred size of the progressBar minus
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* insets if it's horizontal.
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*/
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protected Dimension getPreferredInnerHorizontal()
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{
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Font font = progressBar.getFont();
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FontMetrics fm = progressBar.getFontMetrics(font);
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int stringWidth = 0;
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String str = progressBar.getString();
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if (str != null)
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stringWidth = fm.stringWidth(progressBar.getString());
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Insets i = progressBar.getInsets();
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int prefWidth = Math.max(200 - i.left - i.right, stringWidth);
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int stringHeight = 0;
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if (str != null)
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stringHeight = fm.getHeight();
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int prefHeight = Math.max(16 - i.top - i.bottom, stringHeight);
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return new Dimension(prefWidth, prefHeight);
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}
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/**
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* This method returns the preferred size of the inner
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* rectangle (the bounds without insets) if the
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* progressBar is vertical.
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*
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* @return The preferred size of the progressBar minus
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* insets if it's vertical.
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*/
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protected Dimension getPreferredInnerVertical()
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{
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Font font = progressBar.getFont();
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FontMetrics fm = progressBar.getFontMetrics(font);
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int stringWidth = 0;
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String str = progressBar.getString();
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if (str != null)
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stringWidth = fm.stringWidth(progressBar.getString());
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Insets i = progressBar.getInsets();
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int prefHeight = Math.max(200 - i.left - i.right, stringWidth);
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int stringHeight = 0;
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if (str != null)
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stringHeight = fm.getHeight();
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int prefWidth = Math.max(16 - i.top - i.bottom, stringHeight);
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return new Dimension(prefWidth, prefHeight);
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}
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/**
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* This method returns the preferred size of the
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* given JComponent. If it returns null, then it
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* is up to the LayoutManager to give it a size.
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*
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* @param c The component to find the preferred size for.
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*
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* @return The preferred size of the component.
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*/
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public Dimension getPreferredSize(JComponent c)
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{
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Insets insets = c.getInsets();
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Dimension ret;
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int orientation = progressBar.getOrientation();
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if (orientation == JProgressBar.VERTICAL)
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ret = getPreferredInnerVertical();
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else
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ret = getPreferredInnerHorizontal();
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ret.width += insets.left + insets.right;
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ret.height += insets.top + insets.bottom;
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return ret;
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}
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/**
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* This method returns the Color that the text is shown in when the bar is
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* not over the text.
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*
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* @return The color of the text when the bar is not over it.
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*/
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protected Color getSelectionBackground()
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{
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return selectionBackground;
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}
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/**
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* This method returns the Color that the text is shown in when the bar is
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* over the text.
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|
*
|
|
* @return The color of the text when the bar is over it.
|
|
*/
|
|
protected Color getSelectionForeground()
|
|
{
|
|
return selectionForeground;
|
|
}
|
|
|
|
/**
|
|
* This method returns the point (the top left of the bounding box)
|
|
* where the text should be painted.
|
|
*
|
|
* @param g The Graphics object to measure FontMetrics with.
|
|
* @param progressString The string to paint.
|
|
* @param x The x coordinate of the overall bounds box.
|
|
* @param y The y coordinate of the overall bounds box.
|
|
* @param width The width of the overall bounds box.
|
|
* @param height The height of the overall bounds box.
|
|
*
|
|
* @return The top left of the bounding box where text should be painted.
|
|
*/
|
|
protected Point getStringPlacement(Graphics g, String progressString, int x,
|
|
int y, int width, int height)
|
|
{
|
|
Rectangle tr = new Rectangle();
|
|
Rectangle vr = new Rectangle();
|
|
Rectangle ir = new Rectangle();
|
|
|
|
if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
|
|
vr.setBounds(x, y, width, height);
|
|
else
|
|
vr.setBounds(y, x, height, width);
|
|
|
|
Font f = g.getFont();
|
|
FontMetrics fm = g.getFontMetrics(f);
|
|
|
|
SwingUtilities.layoutCompoundLabel(progressBar, fm, progressString, null,
|
|
SwingConstants.CENTER,
|
|
SwingConstants.CENTER,
|
|
SwingConstants.CENTER,
|
|
SwingConstants.CENTER, vr, ir, tr, 0);
|
|
|
|
if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
|
|
return new Point(tr.x, tr.y);
|
|
else
|
|
return new Point(tr.y, tr.x);
|
|
}
|
|
|
|
/**
|
|
* This method increments the animation index.
|
|
*/
|
|
protected void incrementAnimationIndex()
|
|
{
|
|
animationIndex++;
|
|
//numFrames is like string length, it should be named numFrames or something
|
|
if (animationIndex >= numFrames)
|
|
animationIndex = 0;
|
|
progressBar.repaint();
|
|
}
|
|
|
|
/**
|
|
* This method paints the progressBar. It delegates its responsibilities
|
|
* to paintDeterminate and paintIndeterminate.
|
|
*
|
|
* @param g The Graphics object to paint with.
|
|
* @param c The JComponent to paint.
|
|
*/
|
|
public void paint(Graphics g, JComponent c)
|
|
{
|
|
if (! progressBar.isIndeterminate())
|
|
paintDeterminate(g, c);
|
|
else
|
|
paintIndeterminate(g, c);
|
|
}
|
|
|
|
/**
|
|
* This method is called if the painting to be done is
|
|
* for a determinate progressBar.
|
|
*
|
|
* @param g The Graphics object to paint with.
|
|
* @param c The JComponent to paint.
|
|
*/
|
|
protected void paintDeterminate(Graphics g, JComponent c)
|
|
{
|
|
Color saved = g.getColor();
|
|
int space = getCellSpacing();
|
|
int len = getCellLength();
|
|
int max = progressBar.getMaximum();
|
|
int min = progressBar.getMinimum();
|
|
int value = progressBar.getValue();
|
|
|
|
Rectangle vr = SwingUtilities.calculateInnerArea(c, new Rectangle());
|
|
Rectangle or = progressBar.getBounds();
|
|
Insets insets = c.getInsets();
|
|
|
|
int amountFull = getAmountFull(insets, or.width, or.height);
|
|
|
|
if (progressBar.getOrientation() == JProgressBar.HORIZONTAL)
|
|
{
|
|
g.setColor(c.getForeground());
|
|
g.fillRect(vr.x, vr.y, amountFull, vr.height);
|
|
}
|
|
else
|
|
{
|
|
g.setColor(c.getForeground());
|
|
g.fillRect(vr.x, vr.y + vr.height - amountFull, vr.width,
|
|
amountFull);
|
|
}
|
|
|
|
if (progressBar.isStringPainted() && !progressBar.getString().equals(""))
|
|
paintString(g, 0, 0, or.width, or.height, amountFull, insets);
|
|
g.setColor(saved);
|
|
}
|
|
|
|
/**
|
|
* This method is called if the painting to be done is for
|
|
* an indeterminate progressBar.
|
|
*
|
|
* @param g The Graphics object to paint with.
|
|
* @param c The JComponent to paint.
|
|
*/
|
|
protected void paintIndeterminate(Graphics g, JComponent c)
|
|
{
|
|
//need to paint the box at it's current position. no text is painted since
|
|
//all we're doing is bouncing back and forth
|
|
Color saved = g.getColor();
|
|
Insets insets = c.getInsets();
|
|
|
|
Rectangle or = c.getBounds();
|
|
Rectangle vr = new Rectangle();
|
|
SwingUtilities.calculateInnerArea(c, vr);
|
|
|
|
g.setColor(c.getBackground());
|
|
g.fillRect(vr.x, vr.y, vr.width, vr.height);
|
|
|
|
boxRect = getBox(boxRect);
|
|
|
|
g.setColor(c.getForeground());
|
|
g.fillRect(boxRect.x, boxRect.y, boxRect.width, boxRect.height);
|
|
|
|
if (progressBar.isStringPainted() && !progressBar.getString().equals(""))
|
|
paintString(g, 0, 0, or.width, or.height,
|
|
getAmountFull(insets, or.width, or.height), insets);
|
|
|
|
g.setColor(saved);
|
|
}
|
|
|
|
/**
|
|
* This method paints the string for the progressBar.
|
|
*
|
|
* @param g The Graphics object to paint with.
|
|
* @param x The x coordinate of the progressBar.
|
|
* @param y The y coordinate of the progressBar.
|
|
* @param width The width of the progressBar.
|
|
* @param height The height of the progressBar.
|
|
* @param amountFull The amount of the progressBar that has its bar filled.
|
|
* @param b The insets of the progressBar.
|
|
*/
|
|
protected void paintString(Graphics g, int x, int y, int width, int height,
|
|
int amountFull, Insets b)
|
|
{
|
|
String str = progressBar.getString();
|
|
int full = getAmountFull(b, width, height);
|
|
Point placement = getStringPlacement(g, progressBar.getString(),
|
|
x + b.left, y + b.top,
|
|
width - b.left - b.right,
|
|
height - b.top - b.bottom);
|
|
Color savedColor = g.getColor();
|
|
Shape savedClip = g.getClip();
|
|
FontMetrics fm = g.getFontMetrics(progressBar.getFont());
|
|
|
|
if (progressBar.getOrientation() == JProgressBar.VERTICAL)
|
|
{
|
|
AffineTransform rotate = AffineTransform.getRotateInstance(Math.PI / 2);
|
|
g.setFont(progressBar.getFont().deriveFont(rotate));
|
|
placement.x = width - placement.x - fm.getAscent();
|
|
}
|
|
else
|
|
{
|
|
placement.y += fm.getAscent();
|
|
}
|
|
|
|
g.setColor(getSelectionForeground());
|
|
g.setClip(0, 0, full + b.left, height);
|
|
g.drawString(str, placement.x, placement.y);
|
|
g.setColor(getSelectionBackground());
|
|
g.setClip(full + b.left, 0, width - full, height);
|
|
g.drawString(str, placement.x, placement.y);
|
|
g.setClip(savedClip);
|
|
g.setColor(savedColor);
|
|
}
|
|
|
|
/**
|
|
* This method sets the current animation index. If the index is greater than
|
|
* the number of frames, it resets to 0.
|
|
*
|
|
* @param newValue The new animation index.
|
|
*/
|
|
protected void setAnimationIndex(int newValue)
|
|
{
|
|
animationIndex = (newValue <= numFrames) ? newValue : 0;
|
|
progressBar.repaint();
|
|
}
|
|
|
|
/**
|
|
* This method sets the cell length.
|
|
*
|
|
* @param cellLen The cell length.
|
|
*/
|
|
protected void setCellLength(int cellLen)
|
|
{
|
|
cellLength = cellLen;
|
|
}
|
|
|
|
/**
|
|
* This method sets the cell spacing.
|
|
*
|
|
* @param cellSpace The cell spacing.
|
|
*/
|
|
protected void setCellSpacing(int cellSpace)
|
|
{
|
|
cellSpacing = cellSpace;
|
|
}
|
|
|
|
/**
|
|
* This method starts the animation timer. It is called
|
|
* when the propertyChangeListener detects that the progressBar
|
|
* has changed to indeterminate mode.
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
protected void startAnimationTimer()
|
|
{
|
|
if (animationTimer != null)
|
|
animationTimer.start();
|
|
}
|
|
|
|
/**
|
|
* This method stops the animation timer. It is called when
|
|
* the propertyChangeListener detects that the progressBar
|
|
* has changed to determinate mode.
|
|
*
|
|
* @since 1.4
|
|
*/
|
|
protected void stopAnimationTimer()
|
|
{
|
|
if (animationTimer != null)
|
|
animationTimer.stop();
|
|
setAnimationIndex(0);
|
|
}
|
|
|
|
/**
|
|
* This method changes the settings for the progressBar to
|
|
* the defaults provided by the current Look and Feel.
|
|
*/
|
|
protected void installDefaults()
|
|
{
|
|
LookAndFeel.installColorsAndFont(progressBar, "ProgressBar.background",
|
|
"ProgressBar.foreground",
|
|
"ProgressBar.font");
|
|
LookAndFeel.installBorder(progressBar, "ProgressBar.border");
|
|
progressBar.setOpaque(true);
|
|
|
|
selectionForeground = UIManager.getColor("ProgressBar.selectionForeground");
|
|
selectionBackground = UIManager.getColor("ProgressBar.selectionBackground");
|
|
cellLength = UIManager.getInt("ProgressBar.cellLength");
|
|
cellSpacing = UIManager.getInt("ProgressBar.cellSpacing");
|
|
|
|
int repaintInterval = UIManager.getInt("ProgressBar.repaintInterval");
|
|
int cycleTime = UIManager.getInt("ProgressBar.cycleTime");
|
|
|
|
if (cycleTime % repaintInterval != 0
|
|
&& (cycleTime / repaintInterval) % 2 != 0)
|
|
{
|
|
int div = (cycleTime / repaintInterval) + 2;
|
|
div /= 2;
|
|
div *= 2;
|
|
cycleTime = div * repaintInterval;
|
|
}
|
|
setAnimationIndex(0);
|
|
numFrames = cycleTime / repaintInterval;
|
|
animationTimer.setDelay(repaintInterval);
|
|
}
|
|
|
|
/**
|
|
* The method uninstalls any defaults that were
|
|
* set by the current Look and Feel.
|
|
*/
|
|
protected void uninstallDefaults()
|
|
{
|
|
progressBar.setFont(null);
|
|
progressBar.setForeground(null);
|
|
progressBar.setBackground(null);
|
|
|
|
selectionForeground = null;
|
|
selectionBackground = null;
|
|
}
|
|
|
|
/**
|
|
* This method registers listeners to all the
|
|
* components that this UI delegate needs to listen to.
|
|
*/
|
|
protected void installListeners()
|
|
{
|
|
changeListener = new ChangeHandler();
|
|
propertyListener = new PropertyChangeHandler();
|
|
animation = new Animator();
|
|
|
|
progressBar.addChangeListener(changeListener);
|
|
progressBar.addPropertyChangeListener(propertyListener);
|
|
animationTimer.addActionListener(animation);
|
|
|
|
ancestorListener = new AncestorHandler();
|
|
progressBar.addAncestorListener(ancestorListener);
|
|
|
|
componentListener = new ComponentHandler();
|
|
progressBar.addComponentListener(componentListener);
|
|
}
|
|
|
|
/**
|
|
* This method unregisters listeners to all the
|
|
* components that were listened to.
|
|
*/
|
|
protected void uninstallListeners()
|
|
{
|
|
progressBar.removeChangeListener(changeListener);
|
|
progressBar.removePropertyChangeListener(propertyListener);
|
|
animationTimer.removeActionListener(animation);
|
|
|
|
changeListener = null;
|
|
propertyListener = null;
|
|
animation = null;
|
|
|
|
if (ancestorListener != null)
|
|
progressBar.removeAncestorListener(ancestorListener);
|
|
ancestorListener = null;
|
|
|
|
if (componentListener != null)
|
|
progressBar.removeComponentListener(componentListener);
|
|
componentListener = null;
|
|
}
|
|
|
|
/**
|
|
* This method installs the UI for the given JComponent.
|
|
* This includes setting up defaults and listeners as
|
|
* well as initializing any values or objects that
|
|
* the UI may need.
|
|
*
|
|
* @param c The JComponent that is having this UI installed.
|
|
*/
|
|
public void installUI(JComponent c)
|
|
{
|
|
super.installUI(c);
|
|
if (c instanceof JProgressBar)
|
|
{
|
|
progressBar = (JProgressBar) c;
|
|
|
|
animationTimer = new Timer(200, null);
|
|
animationTimer.setRepeats(true);
|
|
|
|
installDefaults();
|
|
installListeners();
|
|
}
|
|
if (progressBar.isIndeterminate())
|
|
startAnimationTimer();
|
|
}
|
|
|
|
/**
|
|
* This method removes the UI for the given JComponent.
|
|
* This includes removing any listeners or defaults
|
|
* that the installUI may have set up.
|
|
*
|
|
* @param c The JComponent that is having this UI uninstalled.
|
|
*/
|
|
public void uninstallUI(JComponent c)
|
|
{
|
|
super.uninstallUI(c);
|
|
uninstallListeners();
|
|
uninstallDefaults();
|
|
|
|
animationTimer = null;
|
|
progressBar = null;
|
|
}
|
|
|
|
}
|