Shape.java: Merged with Classpath.
* java/awt/Shape.java: Merged with Classpath. * java/awt/Scrollbar.java: Merged with Classpath. From-SVN: r49208
This commit is contained in:
Tom Tromey
Tom Tromey
parent
17af0664ba
commit
02ad93a608
3 changed files with 729 additions and 235 deletions
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@ -1,235 +1,684 @@
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/* Copyright (C) 2000, 2001 Free Software Foundation
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/* Scrollbar.java -- AWT Scrollbar widget
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Copyright (C) 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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This file is part of libjava.
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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., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 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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This software is copyrighted work licensed under the terms of the
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Libjava License. Please consult the file "LIBJAVA_LICENSE" for
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details. */
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package java.awt;
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import java.awt.event.*;
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import java.awt.peer.ScrollbarPeer;
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import java.awt.peer.ComponentPeer;
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import java.awt.event.AdjustmentListener;
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import java.awt.event.AdjustmentEvent;
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/**
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* @author Tom Tromey <tromey@cygnus.com>
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* @date April 12, 2000
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* This class implements a scrollbar widget.
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*
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* @author Aaron M. Renn (arenn@urbanophile.com)
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* @author Tom Tromey <tromey@cygnus.com>
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*/
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public class Scrollbar extends Component implements Adjustable,
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java.io.Serializable
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{
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// FIXME: Serialization readObject/writeObject
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/*
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* Static Variables
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*/
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public class Scrollbar extends Component implements Adjustable
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/**
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* Constant indicating that a scrollbar is horizontal.
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*/
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public static final int HORIZONTAL = 0;
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/**
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* Constant indicating that a scrollbar is vertical.
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*/
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public static final int VERTICAL = 1;
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// Serialization Constant
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private static final long serialVersionUID = 8451667562882310543L;
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/*************************************************************************/
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/**
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* @serial The amount by which the value of the scrollbar is changed
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* when incrementing in line mode.
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*/
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private int lineIncrement;
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/**
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* @serial The amount by which the value of the scrollbar is changed
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* when incrementing in page mode.
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*/
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private int pageIncrement;
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/**
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* @serial The maximum value for this scrollbar
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*/
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private int maximum;
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/**
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* @serial The minimum value for this scrollbar
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*/
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private int minimum;
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/**
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* @serial The orientation of this scrollbar, which will be either
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* the <code>HORIZONTAL</code> or <code>VERTICAL</code> constant
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* from this class.
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*/
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private int orientation;
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/**
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* @serial The current value of this scrollbar.
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*/
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private int value;
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/**
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* @serial The width of the scrollbar's thumb, which is relative
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* to the minimum and maximum value of the scrollbar.
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*/
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private int visibleAmount;
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// List of AdjustmentListener's.
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private AdjustmentListener adjustment_listeners;
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/*************************************************************************/
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/*
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* Constructors
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*/
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/**
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* Initializes a new instance of <code>Scrollbar</code> with a
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* veritical orientation and default values for all other parameters.
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*/
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public
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Scrollbar()
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{
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public Scrollbar ()
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{
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this (VERTICAL, 0, 10, 0, 100);
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}
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public Scrollbar (int orientation)
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{
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this (orientation, 0, 10, 0, 100);
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}
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public Scrollbar (int orientation, int value, int visible,
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int minimum, int maximum)
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{
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if (orientation != HORIZONTAL && orientation != VERTICAL)
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throw new IllegalArgumentException ();
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if (maximum < minimum)
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maximum = minimum;
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if (value < minimum)
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value = minimum;
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if (value > maximum)
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value = maximum;
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this.orientation = orientation;
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this.value = value;
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this.visible = visible;
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this.minimum = minimum;
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this.maximum = maximum;
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this.unit = 1;
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this.block = 0; // FIXME
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}
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public void addNotify ()
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{
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if (peer == null)
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peer = getToolkit ().createScrollbar (this);
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super.addNotify ();
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}
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public int getOrientation ()
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{
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return orientation;
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}
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public void setOrientation (int orientation)
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{
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if (orientation != HORIZONTAL && orientation != VERTICAL)
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throw new IllegalArgumentException ();
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this.orientation = orientation;
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}
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public int getValue ()
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{
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return value;
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}
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public void setValue (int value)
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{
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setValues (value, visible, minimum, maximum);
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}
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public int getMinimum ()
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{
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return minimum;
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}
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public void setMinimum (int minimum)
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{
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setValues (value, visible, minimum, maximum);
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}
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public int getMaximum ()
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{
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return maximum;
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}
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public void setMaximum (int maximum)
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{
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setValues (value, visible, minimum, maximum);
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}
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public int getVisibleAmount ()
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{
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return visible;
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}
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public int getVisible ()
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{
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return visible;
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}
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public void setVisibleAmount (int visible)
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{
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setValues (value, visible, minimum, maximum);
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}
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public void setUnitIncrement (int v)
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{
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unit = v;
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if (peer != null)
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{
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ScrollbarPeer sp = (ScrollbarPeer) peer;
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sp.setLineIncrement (v);
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}
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}
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/** @deprecated */
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public void setLineIncrement (int v)
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{
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setUnitIncrement (v);
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}
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public int getUnitIncrement ()
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{
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return unit;
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}
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public int getLineIncrement ()
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{
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return unit;
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}
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public void setBlockIncrement (int v)
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{
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block = v;
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if (peer != null)
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{
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ScrollbarPeer sp = (ScrollbarPeer) peer;
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sp.setPageIncrement (v);
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}
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}
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public void setPageIncrement (int v)
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{
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setBlockIncrement (v);
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}
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public int getBlockIncrement ()
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{
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return block;
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}
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public int getPageIncrement ()
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{
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return block;
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}
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public synchronized void setValues (int value, int visible,
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int minimum, int maximum)
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{
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if (maximum < minimum)
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maximum = minimum;
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if (value < minimum)
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value = minimum;
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if (value > maximum)
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value = maximum;
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this.value = value;
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this.visible = visible;
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this.minimum = minimum;
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this.maximum = maximum;
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if (peer != null)
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{
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ScrollbarPeer sp = (ScrollbarPeer) peer;
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sp.setValues (value, visible, minimum, maximum);
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}
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}
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public void addAdjustmentListener (AdjustmentListener l)
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{
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listeners = AWTEventMulticaster.add (listeners, l);
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}
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public void removeAdjustmentListener (AdjustmentListener l)
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{
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listeners = AWTEventMulticaster.remove (listeners, l);
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}
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protected void processEvent (AWTEvent e)
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{
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if (e instanceof AdjustmentEvent)
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processAdjustmentEvent ((AdjustmentEvent) e);
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else
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super.processEvent (e);
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}
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protected void processAdjustmentEvent (AdjustmentEvent e)
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{
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if (listeners != null)
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listeners.adjustmentValueChanged (e);
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}
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protected String paramString ()
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{
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return ("Scrollbar["
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+ ((orientation == VERTICAL) ? "VERTICAL" : "HORIZONTAL") + ","
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+ value + ","
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+ visible + ","
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+ minimum + ","
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+ maximum + ","
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+ unit + ","
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+ block + "]");
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}
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private AdjustmentListener listeners;
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private int orientation;
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private int value;
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private int visible;
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private int minimum;
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private int maximum;
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private int unit;
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private int block;
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this(VERTICAL);
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}
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/*************************************************************************/
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/**
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* Initializes a new instance of <code>Scrollbar</code> with the
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* specified orientation and default values for all other parameters.
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* The orientation must be either the constant <code>HORIZONTAL</code> or
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* <code>VERTICAL</code> from this class. An incorrect value will throw
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* an exception.
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*
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* @param orientation The orientation of this scrollbar.
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*
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* @exception IllegalArgumentException If the orientation value is not valid.
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*/
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public
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Scrollbar(int orientation) throws IllegalArgumentException
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{
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this(orientation, 0, 10, 0, 100);
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}
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/*************************************************************************/
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/**
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* Initializes a new instance of <code>Scrollbar</code> with the
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* specified parameters. The orientation must be either the constant
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* <code>HORIZONTAL</code> or <code>VERTICAL</code>. An incorrect value
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* will throw an exception. Inconsistent values for other parameters
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* are silently corrected to valid values.
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*
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* @param orientation The orientation of this scrollbar.
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* @param value The initial value of the scrollbar.
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* @param visibleAmount The width of the scrollbar thumb.
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* @param minimum The minimum value of the scrollbar.
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* @param maximum The maximum value of the scrollbar.
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*
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* @exception IllegalArgumentException If the orientation value is not valid.
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*/
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public
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Scrollbar(int orientation, int value, int visibleAmount, int minimum,
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int maximum) throws IllegalArgumentException
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{
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if ((orientation != HORIZONTAL) && (orientation != VERTICAL))
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throw new IllegalArgumentException("Bad orientation value: "
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+ orientation);
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this.orientation = orientation;
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setValues(value, visibleAmount, minimum, maximum);
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// Default is 1 according to online docs.
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lineIncrement = 1;
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pageIncrement = (maximum - minimum) / 5;
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if (pageIncrement == 0)
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pageIncrement = 1;
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}
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/*************************************************************************/
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/*
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* Instance Methods
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*/
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/**
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* Returns the orientation constant for this object.
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*
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* @return The orientation constant for this object.
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*/
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public int
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getOrientation()
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{
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return(orientation);
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}
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/*************************************************************************/
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/**
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* Sets the orientation of this scrollbar to the specified value. This
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* value must be either the constant <code>HORIZONTAL</code> or
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* <code>VERTICAL</code> from this class or an exception will be thrown.
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*
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* @param orientation The new orientation value.
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*
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* @exception IllegalArgumentException If the orientation value is not valid.
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*/
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public void
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setOrientation(int orientation)
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{
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if ((orientation != HORIZONTAL) && (orientation != VERTICAL))
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throw new IllegalArgumentException("Bad orientation value: "
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+ orientation);
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// FIXME: Communicate to peer? Or must this be called before peer creation?
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this.orientation = orientation;
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}
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/*************************************************************************/
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/**
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* Returns the current value for this scrollbar.
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*
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* @return The current value for this scrollbar.
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*/
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public int
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getValue()
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{
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return(value);
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}
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/*************************************************************************/
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/**
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* Sets the current value for this scrollbar to the specified value.
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* If this is inconsistent with the minimum and maximum values for this
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* scrollbar, the value is silently adjusted.
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*
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* @param value The new value for this scrollbar.
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*/
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public void
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setValue(int value)
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{
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setValues(value, visibleAmount, minimum, maximum);
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}
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/*************************************************************************/
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/**
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* Returns the maximum value for this scrollbar.
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*
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* @return The maximum value for this scrollbar.
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*/
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public int
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getMaximum()
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{
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return(maximum);
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}
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/*************************************************************************/
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/**
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* Sets the maximum value for this scrollbar to the specified value.
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* If the value is less than the current minimum value, it is silent
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* set to equal the minimum value.
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*
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* @param maximum The new maximum value for this scrollbar.
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||||
*/
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||||
public void
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setMaximum(int maximum)
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{
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||||
setValues(value, visibleAmount, minimum, maximum);
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}
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||||
|
||||
/*************************************************************************/
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||||
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||||
/**
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* Returns the minimum value for this scrollbar.
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*
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* @return The minimum value for this scrollbar.
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*/
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public int
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getMinimum()
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{
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return(minimum);
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}
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||||
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||||
/*************************************************************************/
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||||
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||||
/**
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||||
* Sets the minimum value for this scrollbar to the specified value. If
|
||||
* this is not consistent with the current value and maximum, it is
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||||
* silently adjusted to be consistent.
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||||
*
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||||
* @param minimum The new minimum value for this scrollbar.
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||||
*/
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||||
public void
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||||
setMinimum(int minimum)
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||||
{
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||||
setValues(value, visibleAmount, minimum, maximum);
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||||
}
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||||
|
||||
/*************************************************************************/
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||||
|
||||
/**
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* Returns the width of the scrollbar's thumb, in units relative to the
|
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* maximum and minimum value of the scrollbar.
|
||||
*
|
||||
* @return The width of the scrollbar's thumb.
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||||
*/
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||||
public int
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getVisibleAmount()
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{
|
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return(visibleAmount);
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}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns the width of the scrollbar's thumb, in units relative to the
|
||||
* maximum and minimum value of the scrollbar.
|
||||
*
|
||||
* @return The width of the scrollbar's thumb.
|
||||
*
|
||||
* @deprecated This method is deprecated in favor of
|
||||
* <code>getVisibleAmount()</code>.
|
||||
*/
|
||||
public int
|
||||
getVisible()
|
||||
{
|
||||
return(getVisibleAmount());
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the width of the scrollbar's thumb, in units relative to the
|
||||
* maximum and minimum value of the scrollbar.
|
||||
*
|
||||
* @param visibileAmount The new visible amount value of the scrollbar.
|
||||
*/
|
||||
public void
|
||||
setVisibleAmount(int visibleAmount)
|
||||
{
|
||||
setValues(value, visibleAmount, minimum, maximum);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the current value, visible amount, minimum, and maximum for this
|
||||
* scrollbar. These values are adjusted to be internally consistent
|
||||
* if necessary.
|
||||
*
|
||||
* @param value The new value for this scrollbar.
|
||||
* @param visibleAmount The new visible amount for this scrollbar.
|
||||
* @param minimum The new minimum value for this scrollbar.
|
||||
* @param maximum The new maximum value for this scrollbar.
|
||||
*/
|
||||
public synchronized void
|
||||
setValues(int value, int visibleAmount, int minimum, int maximum)
|
||||
{
|
||||
if (maximum < minimum)
|
||||
maximum = minimum;
|
||||
|
||||
if (value < minimum)
|
||||
value = minimum;
|
||||
|
||||
if (value > maximum)
|
||||
value = maximum;
|
||||
|
||||
if (visibleAmount > value)
|
||||
visibleAmount = value;
|
||||
|
||||
this.value = value;
|
||||
this.visibleAmount = visibleAmount;
|
||||
this.minimum = minimum;
|
||||
this.maximum = maximum;
|
||||
|
||||
ScrollbarPeer sp = (ScrollbarPeer)getPeer();
|
||||
if (sp != null)
|
||||
sp.setValues(value, visibleAmount, minimum, maximum);
|
||||
|
||||
int range = maximum - minimum;
|
||||
if (lineIncrement > range)
|
||||
{
|
||||
if (range == 0)
|
||||
lineIncrement = 1;
|
||||
else
|
||||
lineIncrement = range;
|
||||
|
||||
if (sp != null)
|
||||
sp.setLineIncrement(lineIncrement);
|
||||
}
|
||||
|
||||
if (pageIncrement > range)
|
||||
{
|
||||
if (range == 0)
|
||||
pageIncrement = 1;
|
||||
else
|
||||
pageIncrement = range;
|
||||
|
||||
if (sp != null)
|
||||
sp.setPageIncrement(pageIncrement);
|
||||
}
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns the value added or subtracted when the user activates the scrollbar
|
||||
* scroll by a "unit" amount.
|
||||
*
|
||||
* @return The unit increment value.
|
||||
*/
|
||||
public int
|
||||
getUnitIncrement()
|
||||
{
|
||||
return(lineIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns the value added or subtracted when the user selects the scrollbar
|
||||
* scroll by a "unit" amount control.
|
||||
*
|
||||
* @return The unit increment value.
|
||||
*
|
||||
* @deprecated This method is deprecated in favor of
|
||||
* <code>getUnitIncrement()</code>.
|
||||
*/
|
||||
public int
|
||||
getLineIncrement()
|
||||
{
|
||||
return(lineIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the value added or subtracted to the scrollbar value when the
|
||||
* user selects the scroll by a "unit" amount control.
|
||||
*
|
||||
* @param unitIncrement The new unit increment amount.
|
||||
*/
|
||||
public synchronized void
|
||||
setUnitIncrement(int unitIncrement)
|
||||
{
|
||||
if (unitIncrement < 0)
|
||||
throw new IllegalArgumentException("Unit increment less than zero.");
|
||||
|
||||
int range = maximum - minimum;
|
||||
if (unitIncrement > range)
|
||||
{
|
||||
if (range == 0)
|
||||
unitIncrement = 1;
|
||||
else
|
||||
unitIncrement = range;
|
||||
}
|
||||
|
||||
if (unitIncrement == lineIncrement)
|
||||
return;
|
||||
|
||||
lineIncrement = unitIncrement;
|
||||
|
||||
ScrollbarPeer sp = (ScrollbarPeer)getPeer();
|
||||
if (sp != null)
|
||||
sp.setLineIncrement(lineIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the value added or subtracted to the scrollbar value when the
|
||||
* user selects the scroll by a "unit" amount control.
|
||||
*
|
||||
* @param lineIncrement The new unit increment amount.
|
||||
*
|
||||
* @deprecated This method is deprecated in favor of
|
||||
* <code>setUnitIncrement()</code>.
|
||||
*/
|
||||
public void
|
||||
setLineIncrement(int lineIncrement)
|
||||
{
|
||||
setUnitIncrement(lineIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns the value added or subtracted when the user activates the scrollbar
|
||||
* scroll by a "block" amount.
|
||||
*
|
||||
* @return The block increment value.
|
||||
*/
|
||||
public int
|
||||
getBlockIncrement()
|
||||
{
|
||||
return(pageIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns the value added or subtracted when the user selects the scrollbar
|
||||
* scroll by a "block" amount control.
|
||||
*
|
||||
* @return The block increment value.
|
||||
*
|
||||
* @deprecated This method is deprecated in favor of
|
||||
* <code>getBlockIncrement()</code>.
|
||||
*/
|
||||
public int
|
||||
getPageIncrement()
|
||||
{
|
||||
return(pageIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the value added or subtracted to the scrollbar value when the
|
||||
* user selects the scroll by a "block" amount control.
|
||||
*
|
||||
* @param blockIncrement The new block increment amount.
|
||||
*/
|
||||
public synchronized void
|
||||
setBlockIncrement(int blockIncrement)
|
||||
{
|
||||
if (blockIncrement < 0)
|
||||
throw new IllegalArgumentException("Block increment less than zero.");
|
||||
|
||||
int range = maximum - minimum;
|
||||
if (blockIncrement > range)
|
||||
{
|
||||
if (range == 0)
|
||||
blockIncrement = 1;
|
||||
else
|
||||
blockIncrement = range;
|
||||
}
|
||||
|
||||
if (blockIncrement == pageIncrement)
|
||||
return;
|
||||
|
||||
pageIncrement = blockIncrement;
|
||||
|
||||
ScrollbarPeer sp = (ScrollbarPeer)getPeer();
|
||||
if (sp != null)
|
||||
sp.setPageIncrement(pageIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Sets the value added or subtracted to the scrollbar value when the
|
||||
* user selects the scroll by a "block" amount control.
|
||||
*
|
||||
* @param pageIncrement The new block increment amount.
|
||||
*
|
||||
* @deprecated This method is deprecated in favor of
|
||||
* <code>setBlockIncrement()</code>.
|
||||
*/
|
||||
public void
|
||||
setPageIncrement(int pageIncrement)
|
||||
{
|
||||
setBlockIncrement(pageIncrement);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Notifies this object to create its native peer.
|
||||
*/
|
||||
public synchronized void
|
||||
addNotify()
|
||||
{
|
||||
if (peer == null)
|
||||
peer = getToolkit ().createScrollbar (this);
|
||||
super.addNotify ();
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Adds a new adjustment listener to the list of registered listeners
|
||||
* for this object.
|
||||
*
|
||||
* @param listener The listener to add.
|
||||
*/
|
||||
public synchronized void
|
||||
addAdjustmentListener(AdjustmentListener listener)
|
||||
{
|
||||
adjustment_listeners = AWTEventMulticaster.add(adjustment_listeners, listener);
|
||||
enableEvents(AWTEvent.ADJUSTMENT_EVENT_MASK);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Removes the specified listener from the list of registered listeners
|
||||
* for this object.
|
||||
*
|
||||
* @param listener The listener to remove.
|
||||
*/
|
||||
public synchronized void
|
||||
removeAdjustmentListener(AdjustmentListener listener)
|
||||
{
|
||||
adjustment_listeners = AWTEventMulticaster.remove(adjustment_listeners,
|
||||
listener);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Processes events for this scrollbar. It does this by calling
|
||||
* <code>processAdjustmentEvent()</code> if the event is an instance of
|
||||
* <code>AdjustmentEvent</code>, otherwise it calls the superclass to
|
||||
* process the event.
|
||||
*
|
||||
* @param event The event to process.
|
||||
*/
|
||||
protected void
|
||||
processEvent(AWTEvent event)
|
||||
{
|
||||
if (event instanceof AdjustmentEvent)
|
||||
processAdjustmentEvent((AdjustmentEvent)event);
|
||||
else
|
||||
super.processEvent(event);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Processes adjustment events for this object by dispatching them to
|
||||
* any registered listeners. Note that this method will only be called
|
||||
* if adjustment events are enabled. This will happen automatically if
|
||||
* any listeners are registered. Otherwise, it can be enabled by a
|
||||
* call to <code>enableEvents()</code>.
|
||||
*
|
||||
* @param event The event to process.
|
||||
*/
|
||||
protected void
|
||||
processAdjustmentEvent(AdjustmentEvent event)
|
||||
{
|
||||
if (adjustment_listeners != null)
|
||||
adjustment_listeners.adjustmentValueChanged(event);
|
||||
}
|
||||
|
||||
/*************************************************************************/
|
||||
|
||||
/**
|
||||
* Returns a debugging string for this object.
|
||||
*
|
||||
* @return A debugging string for this object.
|
||||
*/
|
||||
protected String
|
||||
paramString()
|
||||
{
|
||||
return("value=" + getValue() + ",visibleAmount=" +
|
||||
getVisibleAmount() + ",minimum=" + getMinimum()
|
||||
+ ",maximum=" + getMaximum()
|
||||
+ ",pageIncrement=" + pageIncrement
|
||||
+ ",lineIncrement=" + lineIncrement
|
||||
+ ",orientation=" + (orientation == HORIZONTAL
|
||||
? "HORIZONTAL" : "VERTICAL")
|
||||
+ super.paramString());
|
||||
}
|
||||
|
||||
} // class Scrollbar
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue