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/*
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* Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing.plaf.basic;
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import sun.swing.DefaultLookup;
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import sun.swing.UIAction;
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import java.awt.*;
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import java.awt.event.*;
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import java.beans.*;
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import javax.swing.*;
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import javax.swing.event.*;
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import javax.swing.plaf.*;
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/**
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* Implementation of ScrollBarUI for the Basic Look and Feel
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*
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* @author Rich Schiavi
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* @author David Kloba
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* @author Hans Muller
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*/
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public class BasicScrollBarUI
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extends ScrollBarUI implements LayoutManager, SwingConstants
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{
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private static final int POSITIVE_SCROLL = 1;
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private static final int NEGATIVE_SCROLL = -1;
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private static final int MIN_SCROLL = 2;
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private static final int MAX_SCROLL = 3;
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// NOTE: DO NOT use this field directly, SynthScrollBarUI assumes you'll
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// call getMinimumThumbSize to access it.
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protected Dimension minimumThumbSize;
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protected Dimension maximumThumbSize;
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protected Color thumbHighlightColor;
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protected Color thumbLightShadowColor;
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protected Color thumbDarkShadowColor;
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protected Color thumbColor;
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protected Color trackColor;
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protected Color trackHighlightColor;
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protected JScrollBar scrollbar;
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protected JButton incrButton;
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protected JButton decrButton;
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protected boolean isDragging;
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protected TrackListener trackListener;
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protected ArrowButtonListener buttonListener;
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protected ModelListener modelListener;
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protected Rectangle thumbRect;
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protected Rectangle trackRect;
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protected int trackHighlight;
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protected static final int NO_HIGHLIGHT = 0;
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protected static final int DECREASE_HIGHLIGHT = 1;
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protected static final int INCREASE_HIGHLIGHT = 2;
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protected ScrollListener scrollListener;
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protected PropertyChangeListener propertyChangeListener;
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protected Timer scrollTimer;
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private final static int scrollSpeedThrottle = 60; // delay in milli seconds
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/** True indicates a middle click will absolutely position the
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* scrollbar. */
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private boolean supportsAbsolutePositioning;
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/** Hint as to what width (when vertical) or height (when horizontal)
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* should be.
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*/
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private int scrollBarWidth;
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private Handler handler;
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private boolean thumbActive;
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/**
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* Determine whether scrollbar layout should use cached value or adjusted
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* value returned by scrollbar's <code>getValue</code>.
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*/
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private boolean useCachedValue = false;
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/**
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* The scrollbar value is cached to save real value if the view is adjusted.
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*/
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private int scrollBarValue;
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/**
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* Distance between the increment button and the track. This may be a negative
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* number. If negative, then an overlap between the button and track will occur,
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* which is useful for shaped buttons.
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*
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* TODO This should be made protected in a feature release
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*/
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private int incrGap;
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/**
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* Distance between the decrement button and the track. This may be a negative
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* number. If negative, then an overlap between the button and track will occur,
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* which is useful for shaped buttons.
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*
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* TODO This should be made protected in a feature release
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*/
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private int decrGap;
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static void loadActionMap(LazyActionMap map) {
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map.put(new Actions(Actions.POSITIVE_UNIT_INCREMENT));
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map.put(new Actions(Actions.POSITIVE_BLOCK_INCREMENT));
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map.put(new Actions(Actions.NEGATIVE_UNIT_INCREMENT));
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map.put(new Actions(Actions.NEGATIVE_BLOCK_INCREMENT));
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map.put(new Actions(Actions.MIN_SCROLL));
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map.put(new Actions(Actions.MAX_SCROLL));
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}
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public static ComponentUI createUI(JComponent c) {
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return new BasicScrollBarUI();
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}
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protected void configureScrollBarColors()
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{
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LookAndFeel.installColors(scrollbar, "ScrollBar.background",
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"ScrollBar.foreground");
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thumbHighlightColor = UIManager.getColor("ScrollBar.thumbHighlight");
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thumbLightShadowColor = UIManager.getColor("ScrollBar.thumbShadow");
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thumbDarkShadowColor = UIManager.getColor("ScrollBar.thumbDarkShadow");
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thumbColor = UIManager.getColor("ScrollBar.thumb");
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trackColor = UIManager.getColor("ScrollBar.track");
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trackHighlightColor = UIManager.getColor("ScrollBar.trackHighlight");
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}
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public void installUI(JComponent c) {
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scrollbar = (JScrollBar)c;
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thumbRect = new Rectangle(0, 0, 0, 0);
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trackRect = new Rectangle(0, 0, 0, 0);
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installDefaults();
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installComponents();
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installListeners();
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installKeyboardActions();
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}
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public void uninstallUI(JComponent c) {
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scrollbar = (JScrollBar)c;
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uninstallListeners();
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uninstallDefaults();
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uninstallComponents();
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uninstallKeyboardActions();
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thumbRect = null;
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scrollbar = null;
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incrButton = null;
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decrButton = null;
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}
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protected void installDefaults()
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{
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scrollBarWidth = UIManager.getInt("ScrollBar.width");
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if (scrollBarWidth <= 0) {
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scrollBarWidth = 16;
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}
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minimumThumbSize = (Dimension)UIManager.get("ScrollBar.minimumThumbSize");
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maximumThumbSize = (Dimension)UIManager.get("ScrollBar.maximumThumbSize");
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Boolean absB = (Boolean)UIManager.get("ScrollBar.allowsAbsolutePositioning");
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supportsAbsolutePositioning = (absB != null) ? absB.booleanValue() :
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false;
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trackHighlight = NO_HIGHLIGHT;
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if (scrollbar.getLayout() == null ||
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(scrollbar.getLayout() instanceof UIResource)) {
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scrollbar.setLayout(this);
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}
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configureScrollBarColors();
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LookAndFeel.installBorder(scrollbar, "ScrollBar.border");
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LookAndFeel.installProperty(scrollbar, "opaque", Boolean.TRUE);
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scrollBarValue = scrollbar.getValue();
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incrGap = UIManager.getInt("ScrollBar.incrementButtonGap");
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decrGap = UIManager.getInt("ScrollBar.decrementButtonGap");
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// TODO this can be removed when incrGap/decrGap become protected
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// handle scaling for sizeVarients for special case components. The
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// key "JComponent.sizeVariant" scales for large/small/mini
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// components are based on Apples LAF
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String scaleKey = (String)scrollbar.getClientProperty(
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"JComponent.sizeVariant");
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if (scaleKey != null){
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if ("large".equals(scaleKey)){
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scrollBarWidth *= 1.15;
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incrGap *= 1.15;
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decrGap *= 1.15;
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} else if ("small".equals(scaleKey)){
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scrollBarWidth *= 0.857;
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incrGap *= 0.857;
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decrGap *= 0.714;
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} else if ("mini".equals(scaleKey)){
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scrollBarWidth *= 0.714;
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incrGap *= 0.714;
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decrGap *= 0.714;
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}
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}
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}
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protected void installComponents(){
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switch (scrollbar.getOrientation()) {
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case JScrollBar.VERTICAL:
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incrButton = createIncreaseButton(SOUTH);
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decrButton = createDecreaseButton(NORTH);
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break;
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case JScrollBar.HORIZONTAL:
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if (scrollbar.getComponentOrientation().isLeftToRight()) {
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incrButton = createIncreaseButton(EAST);
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decrButton = createDecreaseButton(WEST);
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} else {
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incrButton = createIncreaseButton(WEST);
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decrButton = createDecreaseButton(EAST);
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}
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break;
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}
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scrollbar.add(incrButton);
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scrollbar.add(decrButton);
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// Force the children's enabled state to be updated.
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scrollbar.setEnabled(scrollbar.isEnabled());
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}
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protected void uninstallComponents(){
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scrollbar.remove(incrButton);
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scrollbar.remove(decrButton);
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}
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protected void installListeners(){
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trackListener = createTrackListener();
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buttonListener = createArrowButtonListener();
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modelListener = createModelListener();
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propertyChangeListener = createPropertyChangeListener();
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scrollbar.addMouseListener(trackListener);
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scrollbar.addMouseMotionListener(trackListener);
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scrollbar.getModel().addChangeListener(modelListener);
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scrollbar.addPropertyChangeListener(propertyChangeListener);
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scrollbar.addFocusListener(getHandler());
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if (incrButton != null) {
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incrButton.addMouseListener(buttonListener);
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}
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if (decrButton != null) {
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decrButton.addMouseListener(buttonListener);
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}
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scrollListener = createScrollListener();
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scrollTimer = new Timer(scrollSpeedThrottle, scrollListener);
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scrollTimer.setInitialDelay(300); // default InitialDelay?
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}
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protected void installKeyboardActions(){
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LazyActionMap.installLazyActionMap(scrollbar, BasicScrollBarUI.class,
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"ScrollBar.actionMap");
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InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED);
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SwingUtilities.replaceUIInputMap(scrollbar, JComponent.WHEN_FOCUSED,
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inputMap);
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inputMap = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
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SwingUtilities.replaceUIInputMap(scrollbar,
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JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, inputMap);
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}
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protected void uninstallKeyboardActions(){
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SwingUtilities.replaceUIInputMap(scrollbar, JComponent.WHEN_FOCUSED,
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null);
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SwingUtilities.replaceUIActionMap(scrollbar, null);
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}
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private InputMap getInputMap(int condition) {
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if (condition == JComponent.WHEN_FOCUSED) {
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InputMap keyMap = (InputMap)DefaultLookup.get(
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scrollbar, this, "ScrollBar.focusInputMap");
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InputMap rtlKeyMap;
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if (scrollbar.getComponentOrientation().isLeftToRight() ||
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((rtlKeyMap = (InputMap)DefaultLookup.get(scrollbar, this, "ScrollBar.focusInputMap.RightToLeft")) == null)) {
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return keyMap;
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} else {
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rtlKeyMap.setParent(keyMap);
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return rtlKeyMap;
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}
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}
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else if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) {
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InputMap keyMap = (InputMap)DefaultLookup.get(
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scrollbar, this, "ScrollBar.ancestorInputMap");
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InputMap rtlKeyMap;
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if (scrollbar.getComponentOrientation().isLeftToRight() ||
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((rtlKeyMap = (InputMap)DefaultLookup.get(scrollbar, this, "ScrollBar.ancestorInputMap.RightToLeft")) == null)) {
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return keyMap;
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} else {
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rtlKeyMap.setParent(keyMap);
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return rtlKeyMap;
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}
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}
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return null;
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}
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protected void uninstallListeners() {
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scrollTimer.stop();
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scrollTimer = null;
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if (decrButton != null){
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decrButton.removeMouseListener(buttonListener);
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}
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if (incrButton != null){
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incrButton.removeMouseListener(buttonListener);
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}
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scrollbar.getModel().removeChangeListener(modelListener);
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scrollbar.removeMouseListener(trackListener);
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scrollbar.removeMouseMotionListener(trackListener);
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scrollbar.removePropertyChangeListener(propertyChangeListener);
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scrollbar.removeFocusListener(getHandler());
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handler = null;
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}
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protected void uninstallDefaults(){
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LookAndFeel.uninstallBorder(scrollbar);
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if (scrollbar.getLayout() == this) {
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scrollbar.setLayout(null);
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}
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}
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private Handler getHandler() {
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if (handler == null) {
|
|
|
368 |
handler = new Handler();
|
|
|
369 |
}
|
|
|
370 |
return handler;
|
|
|
371 |
}
|
|
|
372 |
|
|
|
373 |
protected TrackListener createTrackListener(){
|
|
|
374 |
return new TrackListener();
|
|
|
375 |
}
|
|
|
376 |
|
|
|
377 |
protected ArrowButtonListener createArrowButtonListener(){
|
|
|
378 |
return new ArrowButtonListener();
|
|
|
379 |
}
|
|
|
380 |
|
|
|
381 |
protected ModelListener createModelListener(){
|
|
|
382 |
return new ModelListener();
|
|
|
383 |
}
|
|
|
384 |
|
|
|
385 |
protected ScrollListener createScrollListener(){
|
|
|
386 |
return new ScrollListener();
|
|
|
387 |
}
|
|
|
388 |
|
|
|
389 |
protected PropertyChangeListener createPropertyChangeListener() {
|
|
|
390 |
return getHandler();
|
|
|
391 |
}
|
|
|
392 |
|
|
|
393 |
private void updateThumbState(int x, int y) {
|
|
|
394 |
Rectangle rect = getThumbBounds();
|
|
|
395 |
|
|
|
396 |
setThumbRollover(rect.contains(x, y));
|
|
|
397 |
}
|
|
|
398 |
|
|
|
399 |
/**
|
|
|
400 |
* Sets whether or not the mouse is currently over the thumb.
|
|
|
401 |
*
|
|
|
402 |
* @param active True indicates the thumb is currently active.
|
|
|
403 |
* @since 1.5
|
|
|
404 |
*/
|
|
|
405 |
protected void setThumbRollover(boolean active) {
|
|
|
406 |
if (thumbActive != active) {
|
|
|
407 |
thumbActive = active;
|
|
|
408 |
scrollbar.repaint(getThumbBounds());
|
|
|
409 |
}
|
|
|
410 |
}
|
|
|
411 |
|
|
|
412 |
/**
|
|
|
413 |
* Returns true if the mouse is currently over the thumb.
|
|
|
414 |
*
|
|
|
415 |
* @return true if the thumb is currently active
|
|
|
416 |
* @since 1.5
|
|
|
417 |
*/
|
|
|
418 |
public boolean isThumbRollover() {
|
|
|
419 |
return thumbActive;
|
|
|
420 |
}
|
|
|
421 |
|
|
|
422 |
public void paint(Graphics g, JComponent c) {
|
|
|
423 |
paintTrack(g, c, getTrackBounds());
|
|
|
424 |
Rectangle thumbBounds = getThumbBounds();
|
|
|
425 |
if (thumbBounds.intersects(g.getClipBounds())) {
|
|
|
426 |
paintThumb(g, c, thumbBounds);
|
|
|
427 |
}
|
|
|
428 |
}
|
|
|
429 |
|
|
|
430 |
|
|
|
431 |
/**
|
|
|
432 |
* A vertical scrollbar's preferred width is the maximum of
|
|
|
433 |
* preferred widths of the (non <code>null</code>)
|
|
|
434 |
* increment/decrement buttons,
|
|
|
435 |
* and the minimum width of the thumb. The preferred height is the
|
|
|
436 |
* sum of the preferred heights of the same parts. The basis for
|
|
|
437 |
* the preferred size of a horizontal scrollbar is similar.
|
|
|
438 |
* <p>
|
|
|
439 |
* The <code>preferredSize</code> is only computed once, subsequent
|
|
|
440 |
* calls to this method just return a cached size.
|
|
|
441 |
*
|
|
|
442 |
* @param c the <code>JScrollBar</code> that's delegating this method to us
|
|
|
443 |
* @return the preferred size of a Basic JScrollBar
|
|
|
444 |
* @see #getMaximumSize
|
|
|
445 |
* @see #getMinimumSize
|
|
|
446 |
*/
|
|
|
447 |
public Dimension getPreferredSize(JComponent c) {
|
|
|
448 |
return (scrollbar.getOrientation() == JScrollBar.VERTICAL)
|
|
|
449 |
? new Dimension(scrollBarWidth, 48)
|
|
|
450 |
: new Dimension(48, scrollBarWidth);
|
|
|
451 |
}
|
|
|
452 |
|
|
|
453 |
|
|
|
454 |
/**
|
|
|
455 |
* @param c The JScrollBar that's delegating this method to us.
|
|
|
456 |
* @return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
|
457 |
* @see #getMinimumSize
|
|
|
458 |
* @see #getPreferredSize
|
|
|
459 |
*/
|
|
|
460 |
public Dimension getMaximumSize(JComponent c) {
|
|
|
461 |
return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE);
|
|
|
462 |
}
|
|
|
463 |
|
|
|
464 |
protected JButton createDecreaseButton(int orientation) {
|
|
|
465 |
return new BasicArrowButton(orientation,
|
|
|
466 |
UIManager.getColor("ScrollBar.thumb"),
|
|
|
467 |
UIManager.getColor("ScrollBar.thumbShadow"),
|
|
|
468 |
UIManager.getColor("ScrollBar.thumbDarkShadow"),
|
|
|
469 |
UIManager.getColor("ScrollBar.thumbHighlight"));
|
|
|
470 |
}
|
|
|
471 |
|
|
|
472 |
protected JButton createIncreaseButton(int orientation) {
|
|
|
473 |
return new BasicArrowButton(orientation,
|
|
|
474 |
UIManager.getColor("ScrollBar.thumb"),
|
|
|
475 |
UIManager.getColor("ScrollBar.thumbShadow"),
|
|
|
476 |
UIManager.getColor("ScrollBar.thumbDarkShadow"),
|
|
|
477 |
UIManager.getColor("ScrollBar.thumbHighlight"));
|
|
|
478 |
}
|
|
|
479 |
|
|
|
480 |
|
|
|
481 |
protected void paintDecreaseHighlight(Graphics g)
|
|
|
482 |
{
|
|
|
483 |
Insets insets = scrollbar.getInsets();
|
|
|
484 |
Rectangle thumbR = getThumbBounds();
|
|
|
485 |
g.setColor(trackHighlightColor);
|
|
|
486 |
|
|
|
487 |
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
|
|
2658
|
488 |
//paint the distance between the start of the track and top of the thumb
|
|
2
|
489 |
int x = insets.left;
|
|
2658
|
490 |
int y = trackRect.y;
|
|
2
|
491 |
int w = scrollbar.getWidth() - (insets.left + insets.right);
|
|
|
492 |
int h = thumbR.y - y;
|
|
|
493 |
g.fillRect(x, y, w, h);
|
|
2658
|
494 |
} else {
|
|
|
495 |
//if left-to-right, fill the area between the start of the track and
|
|
|
496 |
//the left edge of the thumb. If right-to-left, fill the area between
|
|
|
497 |
//the end of the thumb and end of the track.
|
|
2
|
498 |
int x, w;
|
|
|
499 |
if (scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
2658
|
500 |
x = trackRect.x;
|
|
2
|
501 |
w = thumbR.x - x;
|
|
|
502 |
} else {
|
|
|
503 |
x = thumbR.x + thumbR.width;
|
|
2658
|
504 |
w = trackRect.x + trackRect.width - x;
|
|
2
|
505 |
}
|
|
|
506 |
int y = insets.top;
|
|
|
507 |
int h = scrollbar.getHeight() - (insets.top + insets.bottom);
|
|
|
508 |
g.fillRect(x, y, w, h);
|
|
|
509 |
}
|
|
|
510 |
}
|
|
|
511 |
|
|
|
512 |
|
|
|
513 |
protected void paintIncreaseHighlight(Graphics g)
|
|
|
514 |
{
|
|
|
515 |
Insets insets = scrollbar.getInsets();
|
|
|
516 |
Rectangle thumbR = getThumbBounds();
|
|
|
517 |
g.setColor(trackHighlightColor);
|
|
|
518 |
|
|
|
519 |
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
|
|
2658
|
520 |
//fill the area between the bottom of the thumb and the end of the track.
|
|
2
|
521 |
int x = insets.left;
|
|
|
522 |
int y = thumbR.y + thumbR.height;
|
|
|
523 |
int w = scrollbar.getWidth() - (insets.left + insets.right);
|
|
2658
|
524 |
int h = trackRect.y + trackRect.height - y;
|
|
2
|
525 |
g.fillRect(x, y, w, h);
|
|
|
526 |
}
|
|
|
527 |
else {
|
|
2658
|
528 |
//if left-to-right, fill the area between the right of the thumb and the
|
|
|
529 |
//end of the track. If right-to-left, then fill the area to the left of
|
|
|
530 |
//the thumb and the start of the track.
|
|
2
|
531 |
int x, w;
|
|
|
532 |
if (scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
|
533 |
x = thumbR.x + thumbR.width;
|
|
2658
|
534 |
w = trackRect.x + trackRect.width - x;
|
|
2
|
535 |
} else {
|
|
2658
|
536 |
x = trackRect.x;
|
|
2
|
537 |
w = thumbR.x - x;
|
|
|
538 |
}
|
|
|
539 |
int y = insets.top;
|
|
|
540 |
int h = scrollbar.getHeight() - (insets.top + insets.bottom);
|
|
|
541 |
g.fillRect(x, y, w, h);
|
|
|
542 |
}
|
|
|
543 |
}
|
|
|
544 |
|
|
|
545 |
|
|
|
546 |
protected void paintTrack(Graphics g, JComponent c, Rectangle trackBounds)
|
|
|
547 |
{
|
|
|
548 |
g.setColor(trackColor);
|
|
|
549 |
g.fillRect(trackBounds.x, trackBounds.y, trackBounds.width, trackBounds.height);
|
|
|
550 |
|
|
|
551 |
if(trackHighlight == DECREASE_HIGHLIGHT) {
|
|
|
552 |
paintDecreaseHighlight(g);
|
|
|
553 |
}
|
|
|
554 |
else if(trackHighlight == INCREASE_HIGHLIGHT) {
|
|
|
555 |
paintIncreaseHighlight(g);
|
|
|
556 |
}
|
|
|
557 |
}
|
|
|
558 |
|
|
|
559 |
|
|
|
560 |
protected void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds)
|
|
|
561 |
{
|
|
|
562 |
if(thumbBounds.isEmpty() || !scrollbar.isEnabled()) {
|
|
|
563 |
return;
|
|
|
564 |
}
|
|
|
565 |
|
|
|
566 |
int w = thumbBounds.width;
|
|
|
567 |
int h = thumbBounds.height;
|
|
|
568 |
|
|
|
569 |
g.translate(thumbBounds.x, thumbBounds.y);
|
|
|
570 |
|
|
|
571 |
g.setColor(thumbDarkShadowColor);
|
|
|
572 |
g.drawRect(0, 0, w-1, h-1);
|
|
|
573 |
g.setColor(thumbColor);
|
|
|
574 |
g.fillRect(0, 0, w-1, h-1);
|
|
|
575 |
|
|
|
576 |
g.setColor(thumbHighlightColor);
|
|
|
577 |
g.drawLine(1, 1, 1, h-2);
|
|
|
578 |
g.drawLine(2, 1, w-3, 1);
|
|
|
579 |
|
|
|
580 |
g.setColor(thumbLightShadowColor);
|
|
|
581 |
g.drawLine(2, h-2, w-2, h-2);
|
|
|
582 |
g.drawLine(w-2, 1, w-2, h-3);
|
|
|
583 |
|
|
|
584 |
g.translate(-thumbBounds.x, -thumbBounds.y);
|
|
|
585 |
}
|
|
|
586 |
|
|
|
587 |
|
|
|
588 |
/**
|
|
|
589 |
* Return the smallest acceptable size for the thumb. If the scrollbar
|
|
|
590 |
* becomes so small that this size isn't available, the thumb will be
|
|
|
591 |
* hidden.
|
|
|
592 |
* <p>
|
|
|
593 |
* <b>Warning </b>: the value returned by this method should not be
|
|
|
594 |
* be modified, it's a shared static constant.
|
|
|
595 |
*
|
|
|
596 |
* @return The smallest acceptable size for the thumb.
|
|
|
597 |
* @see #getMaximumThumbSize
|
|
|
598 |
*/
|
|
|
599 |
protected Dimension getMinimumThumbSize() {
|
|
|
600 |
return minimumThumbSize;
|
|
|
601 |
}
|
|
|
602 |
|
|
|
603 |
/**
|
|
|
604 |
* Return the largest acceptable size for the thumb. To create a fixed
|
|
|
605 |
* size thumb one make this method and <code>getMinimumThumbSize</code>
|
|
|
606 |
* return the same value.
|
|
|
607 |
* <p>
|
|
|
608 |
* <b>Warning </b>: the value returned by this method should not be
|
|
|
609 |
* be modified, it's a shared static constant.
|
|
|
610 |
*
|
|
|
611 |
* @return The largest acceptable size for the thumb.
|
|
|
612 |
* @see #getMinimumThumbSize
|
|
|
613 |
*/
|
|
|
614 |
protected Dimension getMaximumThumbSize() {
|
|
|
615 |
return maximumThumbSize;
|
|
|
616 |
}
|
|
|
617 |
|
|
|
618 |
|
|
|
619 |
/*
|
|
|
620 |
* LayoutManager Implementation
|
|
|
621 |
*/
|
|
|
622 |
|
|
|
623 |
public void addLayoutComponent(String name, Component child) {}
|
|
|
624 |
public void removeLayoutComponent(Component child) {}
|
|
|
625 |
|
|
|
626 |
public Dimension preferredLayoutSize(Container scrollbarContainer) {
|
|
|
627 |
return getPreferredSize((JComponent)scrollbarContainer);
|
|
|
628 |
}
|
|
|
629 |
|
|
|
630 |
public Dimension minimumLayoutSize(Container scrollbarContainer) {
|
|
|
631 |
return getMinimumSize((JComponent)scrollbarContainer);
|
|
|
632 |
}
|
|
|
633 |
|
|
|
634 |
private int getValue(JScrollBar sb) {
|
|
|
635 |
return (useCachedValue) ? scrollBarValue : sb.getValue();
|
|
|
636 |
}
|
|
|
637 |
|
|
|
638 |
protected void layoutVScrollbar(JScrollBar sb)
|
|
|
639 |
{
|
|
|
640 |
Dimension sbSize = sb.getSize();
|
|
|
641 |
Insets sbInsets = sb.getInsets();
|
|
|
642 |
|
|
|
643 |
/*
|
|
|
644 |
* Width and left edge of the buttons and thumb.
|
|
|
645 |
*/
|
|
|
646 |
int itemW = sbSize.width - (sbInsets.left + sbInsets.right);
|
|
|
647 |
int itemX = sbInsets.left;
|
|
|
648 |
|
|
|
649 |
/* Nominal locations of the buttons, assuming their preferred
|
|
|
650 |
* size will fit.
|
|
|
651 |
*/
|
|
|
652 |
boolean squareButtons = DefaultLookup.getBoolean(
|
|
|
653 |
scrollbar, this, "ScrollBar.squareButtons", false);
|
|
|
654 |
int decrButtonH = squareButtons ? itemW :
|
|
|
655 |
decrButton.getPreferredSize().height;
|
|
|
656 |
int decrButtonY = sbInsets.top;
|
|
|
657 |
|
|
|
658 |
int incrButtonH = squareButtons ? itemW :
|
|
|
659 |
incrButton.getPreferredSize().height;
|
|
|
660 |
int incrButtonY = sbSize.height - (sbInsets.bottom + incrButtonH);
|
|
|
661 |
|
|
|
662 |
/* The thumb must fit within the height left over after we
|
|
2658
|
663 |
* subtract the preferredSize of the buttons and the insets
|
|
|
664 |
* and the gaps
|
|
2
|
665 |
*/
|
|
|
666 |
int sbInsetsH = sbInsets.top + sbInsets.bottom;
|
|
|
667 |
int sbButtonsH = decrButtonH + incrButtonH;
|
|
2658
|
668 |
int gaps = decrGap + incrGap;
|
|
|
669 |
float trackH = sbSize.height - (sbInsetsH + sbButtonsH) - gaps;
|
|
2
|
670 |
|
|
|
671 |
/* Compute the height and origin of the thumb. The case
|
|
|
672 |
* where the thumb is at the bottom edge is handled specially
|
|
|
673 |
* to avoid numerical problems in computing thumbY. Enforce
|
|
|
674 |
* the thumbs min/max dimensions. If the thumb doesn't
|
|
|
675 |
* fit in the track (trackH) we'll hide it later.
|
|
|
676 |
*/
|
|
|
677 |
float min = sb.getMinimum();
|
|
|
678 |
float extent = sb.getVisibleAmount();
|
|
|
679 |
float range = sb.getMaximum() - min;
|
|
|
680 |
float value = getValue(sb);
|
|
|
681 |
|
|
|
682 |
int thumbH = (range <= 0)
|
|
|
683 |
? getMaximumThumbSize().height : (int)(trackH * (extent / range));
|
|
|
684 |
thumbH = Math.max(thumbH, getMinimumThumbSize().height);
|
|
|
685 |
thumbH = Math.min(thumbH, getMaximumThumbSize().height);
|
|
|
686 |
|
|
2658
|
687 |
int thumbY = incrButtonY - incrGap - thumbH;
|
|
2
|
688 |
if (value < (sb.getMaximum() - sb.getVisibleAmount())) {
|
|
|
689 |
float thumbRange = trackH - thumbH;
|
|
|
690 |
thumbY = (int)(0.5f + (thumbRange * ((value - min) / (range - extent))));
|
|
2658
|
691 |
thumbY += decrButtonY + decrButtonH + decrGap;
|
|
2
|
692 |
}
|
|
|
693 |
|
|
|
694 |
/* If the buttons don't fit, allocate half of the available
|
|
|
695 |
* space to each and move the lower one (incrButton) down.
|
|
|
696 |
*/
|
|
|
697 |
int sbAvailButtonH = (sbSize.height - sbInsetsH);
|
|
|
698 |
if (sbAvailButtonH < sbButtonsH) {
|
|
|
699 |
incrButtonH = decrButtonH = sbAvailButtonH / 2;
|
|
|
700 |
incrButtonY = sbSize.height - (sbInsets.bottom + incrButtonH);
|
|
|
701 |
}
|
|
|
702 |
decrButton.setBounds(itemX, decrButtonY, itemW, decrButtonH);
|
|
|
703 |
incrButton.setBounds(itemX, incrButtonY, itemW, incrButtonH);
|
|
|
704 |
|
|
|
705 |
/* Update the trackRect field.
|
|
|
706 |
*/
|
|
2658
|
707 |
int itrackY = decrButtonY + decrButtonH + decrGap;
|
|
|
708 |
int itrackH = incrButtonY - incrGap - itrackY;
|
|
2
|
709 |
trackRect.setBounds(itemX, itrackY, itemW, itrackH);
|
|
|
710 |
|
|
|
711 |
/* If the thumb isn't going to fit, zero it's bounds. Otherwise
|
|
|
712 |
* make sure it fits between the buttons. Note that setting the
|
|
|
713 |
* thumbs bounds will cause a repaint.
|
|
|
714 |
*/
|
|
|
715 |
if(thumbH >= (int)trackH) {
|
|
|
716 |
if (UIManager.getBoolean("ScrollBar.alwaysShowThumb")) {
|
|
|
717 |
// This is used primarily for GTK L&F, which expands the
|
|
|
718 |
// thumb to fit the track when it would otherwise be hidden.
|
|
|
719 |
setThumbBounds(itemX, itrackY, itemW, itrackH);
|
|
|
720 |
} else {
|
|
|
721 |
// Other L&F's simply hide the thumb in this case.
|
|
|
722 |
setThumbBounds(0, 0, 0, 0);
|
|
|
723 |
}
|
|
|
724 |
}
|
|
|
725 |
else {
|
|
2658
|
726 |
if ((thumbY + thumbH) > incrButtonY - incrGap) {
|
|
|
727 |
thumbY = incrButtonY - incrGap - thumbH;
|
|
2
|
728 |
}
|
|
2658
|
729 |
if (thumbY < (decrButtonY + decrButtonH + decrGap)) {
|
|
|
730 |
thumbY = decrButtonY + decrButtonH + decrGap + 1;
|
|
2
|
731 |
}
|
|
|
732 |
setThumbBounds(itemX, thumbY, itemW, thumbH);
|
|
|
733 |
}
|
|
|
734 |
}
|
|
|
735 |
|
|
|
736 |
|
|
|
737 |
protected void layoutHScrollbar(JScrollBar sb)
|
|
|
738 |
{
|
|
|
739 |
Dimension sbSize = sb.getSize();
|
|
|
740 |
Insets sbInsets = sb.getInsets();
|
|
|
741 |
|
|
|
742 |
/* Height and top edge of the buttons and thumb.
|
|
|
743 |
*/
|
|
|
744 |
int itemH = sbSize.height - (sbInsets.top + sbInsets.bottom);
|
|
|
745 |
int itemY = sbInsets.top;
|
|
|
746 |
|
|
|
747 |
boolean ltr = sb.getComponentOrientation().isLeftToRight();
|
|
|
748 |
|
|
|
749 |
/* Nominal locations of the buttons, assuming their preferred
|
|
|
750 |
* size will fit.
|
|
|
751 |
*/
|
|
|
752 |
boolean squareButtons = DefaultLookup.getBoolean(
|
|
|
753 |
scrollbar, this, "ScrollBar.squareButtons", false);
|
|
|
754 |
int leftButtonW = squareButtons ? itemH :
|
|
|
755 |
decrButton.getPreferredSize().width;
|
|
|
756 |
int rightButtonW = squareButtons ? itemH :
|
|
|
757 |
incrButton.getPreferredSize().width;
|
|
|
758 |
if (!ltr) {
|
|
|
759 |
int temp = leftButtonW;
|
|
|
760 |
leftButtonW = rightButtonW;
|
|
|
761 |
rightButtonW = temp;
|
|
|
762 |
}
|
|
|
763 |
int leftButtonX = sbInsets.left;
|
|
|
764 |
int rightButtonX = sbSize.width - (sbInsets.right + rightButtonW);
|
|
2658
|
765 |
int leftGap = ltr ? decrGap : incrGap;
|
|
|
766 |
int rightGap = ltr ? incrGap : decrGap;
|
|
2
|
767 |
|
|
|
768 |
/* The thumb must fit within the width left over after we
|
|
2658
|
769 |
* subtract the preferredSize of the buttons and the insets
|
|
|
770 |
* and the gaps
|
|
2
|
771 |
*/
|
|
|
772 |
int sbInsetsW = sbInsets.left + sbInsets.right;
|
|
|
773 |
int sbButtonsW = leftButtonW + rightButtonW;
|
|
2658
|
774 |
float trackW = sbSize.width - (sbInsetsW + sbButtonsW) - (leftGap + rightGap);
|
|
2
|
775 |
|
|
|
776 |
/* Compute the width and origin of the thumb. Enforce
|
|
|
777 |
* the thumbs min/max dimensions. The case where the thumb
|
|
|
778 |
* is at the right edge is handled specially to avoid numerical
|
|
|
779 |
* problems in computing thumbX. If the thumb doesn't
|
|
|
780 |
* fit in the track (trackH) we'll hide it later.
|
|
|
781 |
*/
|
|
|
782 |
float min = sb.getMinimum();
|
|
|
783 |
float max = sb.getMaximum();
|
|
|
784 |
float extent = sb.getVisibleAmount();
|
|
|
785 |
float range = max - min;
|
|
|
786 |
float value = getValue(sb);
|
|
|
787 |
|
|
|
788 |
int thumbW = (range <= 0)
|
|
|
789 |
? getMaximumThumbSize().width : (int)(trackW * (extent / range));
|
|
|
790 |
thumbW = Math.max(thumbW, getMinimumThumbSize().width);
|
|
|
791 |
thumbW = Math.min(thumbW, getMaximumThumbSize().width);
|
|
|
792 |
|
|
2658
|
793 |
int thumbX = ltr ? rightButtonX - rightGap - thumbW : leftButtonX + leftButtonW + leftGap;
|
|
2
|
794 |
if (value < (max - sb.getVisibleAmount())) {
|
|
|
795 |
float thumbRange = trackW - thumbW;
|
|
|
796 |
if( ltr ) {
|
|
|
797 |
thumbX = (int)(0.5f + (thumbRange * ((value - min) / (range - extent))));
|
|
|
798 |
} else {
|
|
|
799 |
thumbX = (int)(0.5f + (thumbRange * ((max - extent - value) / (range - extent))));
|
|
|
800 |
}
|
|
2658
|
801 |
thumbX += leftButtonX + leftButtonW + leftGap;
|
|
2
|
802 |
}
|
|
|
803 |
|
|
|
804 |
/* If the buttons don't fit, allocate half of the available
|
|
|
805 |
* space to each and move the right one over.
|
|
|
806 |
*/
|
|
|
807 |
int sbAvailButtonW = (sbSize.width - sbInsetsW);
|
|
|
808 |
if (sbAvailButtonW < sbButtonsW) {
|
|
|
809 |
rightButtonW = leftButtonW = sbAvailButtonW / 2;
|
|
2658
|
810 |
rightButtonX = sbSize.width - (sbInsets.right + rightButtonW + rightGap);
|
|
2
|
811 |
}
|
|
|
812 |
|
|
|
813 |
(ltr ? decrButton : incrButton).setBounds(leftButtonX, itemY, leftButtonW, itemH);
|
|
|
814 |
(ltr ? incrButton : decrButton).setBounds(rightButtonX, itemY, rightButtonW, itemH);
|
|
|
815 |
|
|
|
816 |
/* Update the trackRect field.
|
|
|
817 |
*/
|
|
2658
|
818 |
int itrackX = leftButtonX + leftButtonW + leftGap;
|
|
|
819 |
int itrackW = rightButtonX - rightGap - itrackX;
|
|
2
|
820 |
trackRect.setBounds(itrackX, itemY, itrackW, itemH);
|
|
|
821 |
|
|
|
822 |
/* Make sure the thumb fits between the buttons. Note
|
|
|
823 |
* that setting the thumbs bounds causes a repaint.
|
|
|
824 |
*/
|
|
|
825 |
if (thumbW >= (int)trackW) {
|
|
|
826 |
if (UIManager.getBoolean("ScrollBar.alwaysShowThumb")) {
|
|
|
827 |
// This is used primarily for GTK L&F, which expands the
|
|
|
828 |
// thumb to fit the track when it would otherwise be hidden.
|
|
|
829 |
setThumbBounds(itrackX, itemY, itrackW, itemH);
|
|
|
830 |
} else {
|
|
|
831 |
// Other L&F's simply hide the thumb in this case.
|
|
|
832 |
setThumbBounds(0, 0, 0, 0);
|
|
|
833 |
}
|
|
|
834 |
}
|
|
|
835 |
else {
|
|
2658
|
836 |
if (thumbX + thumbW > rightButtonX - rightGap) {
|
|
|
837 |
thumbX = rightButtonX - rightGap - thumbW;
|
|
2
|
838 |
}
|
|
2658
|
839 |
if (thumbX < leftButtonX + leftButtonW + leftGap) {
|
|
|
840 |
thumbX = leftButtonX + leftButtonW + leftGap + 1;
|
|
2
|
841 |
}
|
|
|
842 |
setThumbBounds(thumbX, itemY, thumbW, itemH);
|
|
|
843 |
}
|
|
|
844 |
}
|
|
|
845 |
|
|
|
846 |
public void layoutContainer(Container scrollbarContainer)
|
|
|
847 |
{
|
|
|
848 |
/* If the user is dragging the value, we'll assume that the
|
|
|
849 |
* scrollbars layout is OK modulo the thumb which is being
|
|
|
850 |
* handled by the dragging code.
|
|
|
851 |
*/
|
|
|
852 |
if (isDragging) {
|
|
|
853 |
return;
|
|
|
854 |
}
|
|
|
855 |
|
|
|
856 |
JScrollBar scrollbar = (JScrollBar)scrollbarContainer;
|
|
|
857 |
switch (scrollbar.getOrientation()) {
|
|
|
858 |
case JScrollBar.VERTICAL:
|
|
|
859 |
layoutVScrollbar(scrollbar);
|
|
|
860 |
break;
|
|
|
861 |
|
|
|
862 |
case JScrollBar.HORIZONTAL:
|
|
|
863 |
layoutHScrollbar(scrollbar);
|
|
|
864 |
break;
|
|
|
865 |
}
|
|
|
866 |
}
|
|
|
867 |
|
|
|
868 |
|
|
|
869 |
/**
|
|
|
870 |
* Set the bounds of the thumb and force a repaint that includes
|
|
|
871 |
* the old thumbBounds and the new one.
|
|
|
872 |
*
|
|
|
873 |
* @see #getThumbBounds
|
|
|
874 |
*/
|
|
|
875 |
protected void setThumbBounds(int x, int y, int width, int height)
|
|
|
876 |
{
|
|
|
877 |
/* If the thumbs bounds haven't changed, we're done.
|
|
|
878 |
*/
|
|
|
879 |
if ((thumbRect.x == x) &&
|
|
|
880 |
(thumbRect.y == y) &&
|
|
|
881 |
(thumbRect.width == width) &&
|
|
|
882 |
(thumbRect.height == height)) {
|
|
|
883 |
return;
|
|
|
884 |
}
|
|
|
885 |
|
|
|
886 |
/* Update thumbRect, and repaint the union of x,y,w,h and
|
|
|
887 |
* the old thumbRect.
|
|
|
888 |
*/
|
|
|
889 |
int minX = Math.min(x, thumbRect.x);
|
|
|
890 |
int minY = Math.min(y, thumbRect.y);
|
|
|
891 |
int maxX = Math.max(x + width, thumbRect.x + thumbRect.width);
|
|
|
892 |
int maxY = Math.max(y + height, thumbRect.y + thumbRect.height);
|
|
|
893 |
|
|
|
894 |
thumbRect.setBounds(x, y, width, height);
|
|
|
895 |
scrollbar.repaint(minX, minY, maxX - minX, maxY - minY);
|
|
|
896 |
|
|
|
897 |
// Once there is API to determine the mouse location this will need
|
|
|
898 |
// to be changed.
|
|
|
899 |
setThumbRollover(false);
|
|
|
900 |
}
|
|
|
901 |
|
|
|
902 |
|
|
|
903 |
/**
|
|
|
904 |
* Return the current size/location of the thumb.
|
|
|
905 |
* <p>
|
|
|
906 |
* <b>Warning </b>: the value returned by this method should not be
|
|
|
907 |
* be modified, it's a reference to the actual rectangle, not a copy.
|
|
|
908 |
*
|
|
|
909 |
* @return The current size/location of the thumb.
|
|
|
910 |
* @see #setThumbBounds
|
|
|
911 |
*/
|
|
|
912 |
protected Rectangle getThumbBounds() {
|
|
|
913 |
return thumbRect;
|
|
|
914 |
}
|
|
|
915 |
|
|
|
916 |
|
|
|
917 |
/**
|
|
|
918 |
* Returns the current bounds of the track, i.e. the space in between
|
|
|
919 |
* the increment and decrement buttons, less the insets. The value
|
|
|
920 |
* returned by this method is updated each time the scrollbar is
|
|
|
921 |
* laid out (validated).
|
|
|
922 |
* <p>
|
|
|
923 |
* <b>Warning </b>: the value returned by this method should not be
|
|
|
924 |
* be modified, it's a reference to the actual rectangle, not a copy.
|
|
|
925 |
*
|
|
|
926 |
* @return the current bounds of the scrollbar track
|
|
|
927 |
* @see #layoutContainer
|
|
|
928 |
*/
|
|
|
929 |
protected Rectangle getTrackBounds() {
|
|
|
930 |
return trackRect;
|
|
|
931 |
}
|
|
|
932 |
|
|
|
933 |
/*
|
|
|
934 |
* Method for scrolling by a block increment.
|
|
|
935 |
* Added for mouse wheel scrolling support, RFE 4202656.
|
|
|
936 |
*/
|
|
|
937 |
static void scrollByBlock(JScrollBar scrollbar, int direction) {
|
|
|
938 |
// This method is called from BasicScrollPaneUI to implement wheel
|
|
|
939 |
// scrolling, and also from scrollByBlock().
|
|
|
940 |
int oldValue = scrollbar.getValue();
|
|
|
941 |
int blockIncrement = scrollbar.getBlockIncrement(direction);
|
|
|
942 |
int delta = blockIncrement * ((direction > 0) ? +1 : -1);
|
|
|
943 |
int newValue = oldValue + delta;
|
|
|
944 |
|
|
|
945 |
// Check for overflow.
|
|
|
946 |
if (delta > 0 && newValue < oldValue) {
|
|
|
947 |
newValue = scrollbar.getMaximum();
|
|
|
948 |
}
|
|
|
949 |
else if (delta < 0 && newValue > oldValue) {
|
|
|
950 |
newValue = scrollbar.getMinimum();
|
|
|
951 |
}
|
|
|
952 |
|
|
|
953 |
scrollbar.setValue(newValue);
|
|
|
954 |
}
|
|
|
955 |
|
|
|
956 |
protected void scrollByBlock(int direction)
|
|
|
957 |
{
|
|
|
958 |
scrollByBlock(scrollbar, direction);
|
|
|
959 |
trackHighlight = direction > 0 ? INCREASE_HIGHLIGHT : DECREASE_HIGHLIGHT;
|
|
|
960 |
Rectangle dirtyRect = getTrackBounds();
|
|
|
961 |
scrollbar.repaint(dirtyRect.x, dirtyRect.y, dirtyRect.width, dirtyRect.height);
|
|
|
962 |
}
|
|
|
963 |
|
|
|
964 |
/*
|
|
|
965 |
* Method for scrolling by a unit increment.
|
|
|
966 |
* Added for mouse wheel scrolling support, RFE 4202656.
|
|
|
967 |
*
|
|
|
968 |
* If limitByBlock is set to true, the scrollbar will scroll at least 1
|
|
|
969 |
* unit increment, but will not scroll farther than the block increment.
|
|
|
970 |
* See BasicScrollPaneUI.Handler.mouseWheelMoved().
|
|
|
971 |
*/
|
|
|
972 |
static void scrollByUnits(JScrollBar scrollbar, int direction,
|
|
|
973 |
int units, boolean limitToBlock) {
|
|
|
974 |
// This method is called from BasicScrollPaneUI to implement wheel
|
|
|
975 |
// scrolling, as well as from scrollByUnit().
|
|
|
976 |
int delta;
|
|
|
977 |
int limit = -1;
|
|
|
978 |
|
|
|
979 |
if (limitToBlock) {
|
|
|
980 |
if (direction < 0) {
|
|
|
981 |
limit = scrollbar.getValue() -
|
|
|
982 |
scrollbar.getBlockIncrement(direction);
|
|
|
983 |
}
|
|
|
984 |
else {
|
|
|
985 |
limit = scrollbar.getValue() +
|
|
|
986 |
scrollbar.getBlockIncrement(direction);
|
|
|
987 |
}
|
|
|
988 |
}
|
|
|
989 |
|
|
|
990 |
for (int i=0; i<units; i++) {
|
|
|
991 |
if (direction > 0) {
|
|
|
992 |
delta = scrollbar.getUnitIncrement(direction);
|
|
|
993 |
}
|
|
|
994 |
else {
|
|
|
995 |
delta = -scrollbar.getUnitIncrement(direction);
|
|
|
996 |
}
|
|
|
997 |
|
|
|
998 |
int oldValue = scrollbar.getValue();
|
|
|
999 |
int newValue = oldValue + delta;
|
|
|
1000 |
|
|
|
1001 |
// Check for overflow.
|
|
|
1002 |
if (delta > 0 && newValue < oldValue) {
|
|
|
1003 |
newValue = scrollbar.getMaximum();
|
|
|
1004 |
}
|
|
|
1005 |
else if (delta < 0 && newValue > oldValue) {
|
|
|
1006 |
newValue = scrollbar.getMinimum();
|
|
|
1007 |
}
|
|
|
1008 |
if (oldValue == newValue) {
|
|
|
1009 |
break;
|
|
|
1010 |
}
|
|
|
1011 |
|
|
|
1012 |
if (limitToBlock && i > 0) {
|
|
|
1013 |
assert limit != -1;
|
|
|
1014 |
if ((direction < 0 && newValue < limit) ||
|
|
|
1015 |
(direction > 0 && newValue > limit)) {
|
|
|
1016 |
break;
|
|
|
1017 |
}
|
|
|
1018 |
}
|
|
|
1019 |
scrollbar.setValue(newValue);
|
|
|
1020 |
}
|
|
|
1021 |
}
|
|
|
1022 |
|
|
|
1023 |
protected void scrollByUnit(int direction) {
|
|
|
1024 |
scrollByUnits(scrollbar, direction, 1, false);
|
|
|
1025 |
}
|
|
|
1026 |
|
|
|
1027 |
/**
|
|
|
1028 |
* Indicates whether the user can absolutely position the thumb with
|
|
|
1029 |
* a mouse gesture (usually the middle mouse button).
|
|
|
1030 |
*
|
|
|
1031 |
* @return true if a mouse gesture can absolutely position the thumb
|
|
|
1032 |
* @since 1.5
|
|
|
1033 |
*/
|
|
|
1034 |
public boolean getSupportsAbsolutePositioning() {
|
|
|
1035 |
return supportsAbsolutePositioning;
|
|
|
1036 |
}
|
|
|
1037 |
|
|
|
1038 |
/**
|
|
|
1039 |
* A listener to listen for model changes.
|
|
|
1040 |
*
|
|
|
1041 |
*/
|
|
|
1042 |
protected class ModelListener implements ChangeListener {
|
|
|
1043 |
public void stateChanged(ChangeEvent e) {
|
|
|
1044 |
if (!useCachedValue) {
|
|
|
1045 |
scrollBarValue = scrollbar.getValue();
|
|
|
1046 |
}
|
|
|
1047 |
layoutContainer(scrollbar);
|
|
|
1048 |
useCachedValue = false;
|
|
|
1049 |
}
|
|
|
1050 |
}
|
|
|
1051 |
|
|
|
1052 |
|
|
|
1053 |
/**
|
|
|
1054 |
* Track mouse drags.
|
|
|
1055 |
*/
|
|
|
1056 |
protected class TrackListener
|
|
|
1057 |
extends MouseAdapter implements MouseMotionListener
|
|
|
1058 |
{
|
|
|
1059 |
protected transient int offset;
|
|
|
1060 |
protected transient int currentMouseX, currentMouseY;
|
|
|
1061 |
private transient int direction = +1;
|
|
|
1062 |
|
|
|
1063 |
public void mouseReleased(MouseEvent e)
|
|
|
1064 |
{
|
|
|
1065 |
if (isDragging) {
|
|
|
1066 |
updateThumbState(e.getX(), e.getY());
|
|
|
1067 |
}
|
|
|
1068 |
if (SwingUtilities.isRightMouseButton(e) ||
|
|
|
1069 |
(!getSupportsAbsolutePositioning() &&
|
|
|
1070 |
SwingUtilities.isMiddleMouseButton(e)))
|
|
|
1071 |
return;
|
|
|
1072 |
if(!scrollbar.isEnabled())
|
|
|
1073 |
return;
|
|
|
1074 |
|
|
|
1075 |
Rectangle r = getTrackBounds();
|
|
|
1076 |
scrollbar.repaint(r.x, r.y, r.width, r.height);
|
|
|
1077 |
|
|
|
1078 |
trackHighlight = NO_HIGHLIGHT;
|
|
|
1079 |
isDragging = false;
|
|
|
1080 |
offset = 0;
|
|
|
1081 |
scrollTimer.stop();
|
|
|
1082 |
useCachedValue = true;
|
|
|
1083 |
scrollbar.setValueIsAdjusting(false);
|
|
|
1084 |
}
|
|
|
1085 |
|
|
|
1086 |
|
|
|
1087 |
/**
|
|
|
1088 |
* If the mouse is pressed above the "thumb" component
|
|
|
1089 |
* then reduce the scrollbars value by one page ("page up"),
|
|
|
1090 |
* otherwise increase it by one page. If there is no
|
|
|
1091 |
* thumb then page up if the mouse is in the upper half
|
|
|
1092 |
* of the track.
|
|
|
1093 |
*/
|
|
|
1094 |
public void mousePressed(MouseEvent e)
|
|
|
1095 |
{
|
|
|
1096 |
if (SwingUtilities.isRightMouseButton(e) ||
|
|
|
1097 |
(!getSupportsAbsolutePositioning() &&
|
|
|
1098 |
SwingUtilities.isMiddleMouseButton(e)))
|
|
|
1099 |
return;
|
|
|
1100 |
if(!scrollbar.isEnabled())
|
|
|
1101 |
return;
|
|
|
1102 |
|
|
|
1103 |
if (!scrollbar.hasFocus() && scrollbar.isRequestFocusEnabled()) {
|
|
|
1104 |
scrollbar.requestFocus();
|
|
|
1105 |
}
|
|
|
1106 |
|
|
|
1107 |
useCachedValue = true;
|
|
|
1108 |
scrollbar.setValueIsAdjusting(true);
|
|
|
1109 |
|
|
|
1110 |
currentMouseX = e.getX();
|
|
|
1111 |
currentMouseY = e.getY();
|
|
|
1112 |
|
|
|
1113 |
// Clicked in the Thumb area?
|
|
|
1114 |
if(getThumbBounds().contains(currentMouseX, currentMouseY)) {
|
|
|
1115 |
switch (scrollbar.getOrientation()) {
|
|
|
1116 |
case JScrollBar.VERTICAL:
|
|
|
1117 |
offset = currentMouseY - getThumbBounds().y;
|
|
|
1118 |
break;
|
|
|
1119 |
case JScrollBar.HORIZONTAL:
|
|
|
1120 |
offset = currentMouseX - getThumbBounds().x;
|
|
|
1121 |
break;
|
|
|
1122 |
}
|
|
|
1123 |
isDragging = true;
|
|
|
1124 |
return;
|
|
|
1125 |
}
|
|
|
1126 |
else if (getSupportsAbsolutePositioning() &&
|
|
|
1127 |
SwingUtilities.isMiddleMouseButton(e)) {
|
|
|
1128 |
switch (scrollbar.getOrientation()) {
|
|
|
1129 |
case JScrollBar.VERTICAL:
|
|
|
1130 |
offset = getThumbBounds().height / 2;
|
|
|
1131 |
break;
|
|
|
1132 |
case JScrollBar.HORIZONTAL:
|
|
|
1133 |
offset = getThumbBounds().width / 2;
|
|
|
1134 |
break;
|
|
|
1135 |
}
|
|
|
1136 |
isDragging = true;
|
|
|
1137 |
setValueFrom(e);
|
|
|
1138 |
return;
|
|
|
1139 |
}
|
|
|
1140 |
isDragging = false;
|
|
|
1141 |
|
|
|
1142 |
Dimension sbSize = scrollbar.getSize();
|
|
|
1143 |
direction = +1;
|
|
|
1144 |
|
|
|
1145 |
switch (scrollbar.getOrientation()) {
|
|
|
1146 |
case JScrollBar.VERTICAL:
|
|
|
1147 |
if (getThumbBounds().isEmpty()) {
|
|
|
1148 |
int scrollbarCenter = sbSize.height / 2;
|
|
|
1149 |
direction = (currentMouseY < scrollbarCenter) ? -1 : +1;
|
|
|
1150 |
} else {
|
|
|
1151 |
int thumbY = getThumbBounds().y;
|
|
|
1152 |
direction = (currentMouseY < thumbY) ? -1 : +1;
|
|
|
1153 |
}
|
|
|
1154 |
break;
|
|
|
1155 |
case JScrollBar.HORIZONTAL:
|
|
|
1156 |
if (getThumbBounds().isEmpty()) {
|
|
|
1157 |
int scrollbarCenter = sbSize.width / 2;
|
|
|
1158 |
direction = (currentMouseX < scrollbarCenter) ? -1 : +1;
|
|
|
1159 |
} else {
|
|
|
1160 |
int thumbX = getThumbBounds().x;
|
|
|
1161 |
direction = (currentMouseX < thumbX) ? -1 : +1;
|
|
|
1162 |
}
|
|
|
1163 |
if (!scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
|
1164 |
direction = -direction;
|
|
|
1165 |
}
|
|
|
1166 |
break;
|
|
|
1167 |
}
|
|
|
1168 |
scrollByBlock(direction);
|
|
|
1169 |
|
|
|
1170 |
scrollTimer.stop();
|
|
|
1171 |
scrollListener.setDirection(direction);
|
|
|
1172 |
scrollListener.setScrollByBlock(true);
|
|
|
1173 |
startScrollTimerIfNecessary();
|
|
|
1174 |
}
|
|
|
1175 |
|
|
|
1176 |
|
|
|
1177 |
/**
|
|
|
1178 |
* Set the models value to the position of the thumb's top of Vertical
|
|
|
1179 |
* scrollbar, or the left/right of Horizontal scrollbar in
|
|
|
1180 |
* left-to-right/right-to-left scrollbar relative to the origin of the
|
|
|
1181 |
* track.
|
|
|
1182 |
*/
|
|
|
1183 |
public void mouseDragged(MouseEvent e) {
|
|
|
1184 |
if (SwingUtilities.isRightMouseButton(e) ||
|
|
|
1185 |
(!getSupportsAbsolutePositioning() &&
|
|
|
1186 |
SwingUtilities.isMiddleMouseButton(e)))
|
|
|
1187 |
return;
|
|
|
1188 |
if(!scrollbar.isEnabled() || getThumbBounds().isEmpty()) {
|
|
|
1189 |
return;
|
|
|
1190 |
}
|
|
|
1191 |
if (isDragging) {
|
|
|
1192 |
setValueFrom(e);
|
|
|
1193 |
} else {
|
|
|
1194 |
currentMouseX = e.getX();
|
|
|
1195 |
currentMouseY = e.getY();
|
|
|
1196 |
updateThumbState(currentMouseX, currentMouseY);
|
|
|
1197 |
startScrollTimerIfNecessary();
|
|
|
1198 |
}
|
|
|
1199 |
}
|
|
|
1200 |
|
|
|
1201 |
private void setValueFrom(MouseEvent e) {
|
|
|
1202 |
boolean active = isThumbRollover();
|
|
|
1203 |
BoundedRangeModel model = scrollbar.getModel();
|
|
|
1204 |
Rectangle thumbR = getThumbBounds();
|
|
|
1205 |
float trackLength;
|
|
|
1206 |
int thumbMin, thumbMax, thumbPos;
|
|
|
1207 |
|
|
|
1208 |
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
|
|
2658
|
1209 |
thumbMin = trackRect.y;
|
|
|
1210 |
thumbMax = trackRect.y + trackRect.height - thumbR.height;
|
|
2
|
1211 |
thumbPos = Math.min(thumbMax, Math.max(thumbMin, (e.getY() - offset)));
|
|
|
1212 |
setThumbBounds(thumbR.x, thumbPos, thumbR.width, thumbR.height);
|
|
|
1213 |
trackLength = getTrackBounds().height;
|
|
|
1214 |
}
|
|
|
1215 |
else {
|
|
2658
|
1216 |
thumbMin = trackRect.x;
|
|
|
1217 |
thumbMax = trackRect.x + trackRect.width - thumbR.width;
|
|
2
|
1218 |
thumbPos = Math.min(thumbMax, Math.max(thumbMin, (e.getX() - offset)));
|
|
|
1219 |
setThumbBounds(thumbPos, thumbR.y, thumbR.width, thumbR.height);
|
|
|
1220 |
trackLength = getTrackBounds().width;
|
|
|
1221 |
}
|
|
|
1222 |
|
|
|
1223 |
/* Set the scrollbars value. If the thumb has reached the end of
|
|
|
1224 |
* the scrollbar, then just set the value to its maximum. Otherwise
|
|
|
1225 |
* compute the value as accurately as possible.
|
|
|
1226 |
*/
|
|
|
1227 |
if (thumbPos == thumbMax) {
|
|
|
1228 |
if (scrollbar.getOrientation() == JScrollBar.VERTICAL ||
|
|
|
1229 |
scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
|
1230 |
scrollbar.setValue(model.getMaximum() - model.getExtent());
|
|
|
1231 |
} else {
|
|
|
1232 |
scrollbar.setValue(model.getMinimum());
|
|
|
1233 |
}
|
|
|
1234 |
}
|
|
|
1235 |
else {
|
|
|
1236 |
float valueMax = model.getMaximum() - model.getExtent();
|
|
|
1237 |
float valueRange = valueMax - model.getMinimum();
|
|
|
1238 |
float thumbValue = thumbPos - thumbMin;
|
|
|
1239 |
float thumbRange = thumbMax - thumbMin;
|
|
|
1240 |
int value;
|
|
|
1241 |
if (scrollbar.getOrientation() == JScrollBar.VERTICAL ||
|
|
|
1242 |
scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
|
1243 |
value = (int)(0.5 + ((thumbValue / thumbRange) * valueRange));
|
|
|
1244 |
} else {
|
|
|
1245 |
value = (int)(0.5 + (((thumbMax - thumbPos) / thumbRange) * valueRange));
|
|
|
1246 |
}
|
|
|
1247 |
|
|
|
1248 |
useCachedValue = true;
|
|
|
1249 |
scrollBarValue = value + model.getMinimum();
|
|
|
1250 |
scrollbar.setValue(adjustValueIfNecessary(scrollBarValue));
|
|
|
1251 |
}
|
|
|
1252 |
setThumbRollover(active);
|
|
|
1253 |
}
|
|
|
1254 |
|
|
|
1255 |
private int adjustValueIfNecessary(int value) {
|
|
|
1256 |
if (scrollbar.getParent() instanceof JScrollPane) {
|
|
|
1257 |
JScrollPane scrollpane = (JScrollPane)scrollbar.getParent();
|
|
|
1258 |
JViewport viewport = scrollpane.getViewport();
|
|
|
1259 |
Component view = viewport.getView();
|
|
|
1260 |
if (view instanceof JList) {
|
|
|
1261 |
JList list = (JList)view;
|
|
|
1262 |
if (DefaultLookup.getBoolean(list, list.getUI(),
|
|
|
1263 |
"List.lockToPositionOnScroll", false)) {
|
|
|
1264 |
int adjustedValue = value;
|
|
|
1265 |
int mode = list.getLayoutOrientation();
|
|
|
1266 |
int orientation = scrollbar.getOrientation();
|
|
|
1267 |
if (orientation == JScrollBar.VERTICAL && mode == JList.VERTICAL) {
|
|
|
1268 |
int index = list.locationToIndex(new Point(0, value));
|
|
|
1269 |
Rectangle rect = list.getCellBounds(index, index);
|
|
|
1270 |
if (rect != null) {
|
|
|
1271 |
adjustedValue = rect.y;
|
|
|
1272 |
}
|
|
|
1273 |
}
|
|
|
1274 |
if (orientation == JScrollBar.HORIZONTAL &&
|
|
|
1275 |
(mode == JList.VERTICAL_WRAP || mode == JList.HORIZONTAL_WRAP)) {
|
|
|
1276 |
if (scrollpane.getComponentOrientation().isLeftToRight()) {
|
|
|
1277 |
int index = list.locationToIndex(new Point(value, 0));
|
|
|
1278 |
Rectangle rect = list.getCellBounds(index, index);
|
|
|
1279 |
if (rect != null) {
|
|
|
1280 |
adjustedValue = rect.x;
|
|
|
1281 |
}
|
|
|
1282 |
}
|
|
|
1283 |
else {
|
|
|
1284 |
Point loc = new Point(value, 0);
|
|
|
1285 |
int extent = viewport.getExtentSize().width;
|
|
|
1286 |
loc.x += extent - 1;
|
|
|
1287 |
int index = list.locationToIndex(loc);
|
|
|
1288 |
Rectangle rect = list.getCellBounds(index, index);
|
|
|
1289 |
if (rect != null) {
|
|
|
1290 |
adjustedValue = rect.x + rect.width - extent;
|
|
|
1291 |
}
|
|
|
1292 |
}
|
|
|
1293 |
}
|
|
|
1294 |
value = adjustedValue;
|
|
|
1295 |
|
|
|
1296 |
}
|
|
|
1297 |
}
|
|
|
1298 |
}
|
|
|
1299 |
return value;
|
|
|
1300 |
}
|
|
|
1301 |
|
|
|
1302 |
private void startScrollTimerIfNecessary() {
|
|
|
1303 |
if (scrollTimer.isRunning()) {
|
|
|
1304 |
return;
|
|
|
1305 |
}
|
|
|
1306 |
|
|
|
1307 |
Rectangle tb = getThumbBounds();
|
|
|
1308 |
|
|
|
1309 |
switch (scrollbar.getOrientation()) {
|
|
|
1310 |
case JScrollBar.VERTICAL:
|
|
|
1311 |
if (direction > 0) {
|
|
|
1312 |
if (tb.y + tb.height < trackListener.currentMouseY) {
|
|
|
1313 |
scrollTimer.start();
|
|
|
1314 |
}
|
|
|
1315 |
} else if (tb.y > trackListener.currentMouseY) {
|
|
|
1316 |
scrollTimer.start();
|
|
|
1317 |
}
|
|
|
1318 |
break;
|
|
|
1319 |
case JScrollBar.HORIZONTAL:
|
|
|
1320 |
if ((direction > 0 && isMouseAfterThumb())
|
|
|
1321 |
|| (direction < 0 && isMouseBeforeThumb())) {
|
|
|
1322 |
|
|
|
1323 |
scrollTimer.start();
|
|
|
1324 |
}
|
|
|
1325 |
break;
|
|
|
1326 |
}
|
|
|
1327 |
}
|
|
|
1328 |
|
|
|
1329 |
public void mouseMoved(MouseEvent e) {
|
|
|
1330 |
if (!isDragging) {
|
|
|
1331 |
updateThumbState(e.getX(), e.getY());
|
|
|
1332 |
}
|
|
|
1333 |
}
|
|
|
1334 |
|
|
|
1335 |
/**
|
|
|
1336 |
* Invoked when the mouse exits the scrollbar.
|
|
|
1337 |
*
|
|
|
1338 |
* @param e MouseEvent further describing the event
|
|
|
1339 |
* @since 1.5
|
|
|
1340 |
*/
|
|
|
1341 |
public void mouseExited(MouseEvent e) {
|
|
|
1342 |
if (!isDragging) {
|
|
|
1343 |
setThumbRollover(false);
|
|
|
1344 |
}
|
|
|
1345 |
}
|
|
|
1346 |
}
|
|
|
1347 |
|
|
|
1348 |
|
|
|
1349 |
/**
|
|
|
1350 |
* Listener for cursor keys.
|
|
|
1351 |
*/
|
|
|
1352 |
protected class ArrowButtonListener extends MouseAdapter
|
|
|
1353 |
{
|
|
|
1354 |
// Because we are handling both mousePressed and Actions
|
|
|
1355 |
// we need to make sure we don't fire under both conditions.
|
|
|
1356 |
// (keyfocus on scrollbars causes action without mousePress
|
|
|
1357 |
boolean handledEvent;
|
|
|
1358 |
|
|
|
1359 |
public void mousePressed(MouseEvent e) {
|
|
|
1360 |
if(!scrollbar.isEnabled()) { return; }
|
|
|
1361 |
// not an unmodified left mouse button
|
|
|
1362 |
//if(e.getModifiers() != InputEvent.BUTTON1_MASK) {return; }
|
|
|
1363 |
if( ! SwingUtilities.isLeftMouseButton(e)) { return; }
|
|
|
1364 |
|
|
|
1365 |
int direction = (e.getSource() == incrButton) ? 1 : -1;
|
|
|
1366 |
|
|
|
1367 |
scrollByUnit(direction);
|
|
|
1368 |
scrollTimer.stop();
|
|
|
1369 |
scrollListener.setDirection(direction);
|
|
|
1370 |
scrollListener.setScrollByBlock(false);
|
|
|
1371 |
scrollTimer.start();
|
|
|
1372 |
|
|
|
1373 |
handledEvent = true;
|
|
|
1374 |
if (!scrollbar.hasFocus() && scrollbar.isRequestFocusEnabled()) {
|
|
|
1375 |
scrollbar.requestFocus();
|
|
|
1376 |
}
|
|
|
1377 |
}
|
|
|
1378 |
|
|
|
1379 |
public void mouseReleased(MouseEvent e) {
|
|
|
1380 |
scrollTimer.stop();
|
|
|
1381 |
handledEvent = false;
|
|
|
1382 |
scrollbar.setValueIsAdjusting(false);
|
|
|
1383 |
}
|
|
|
1384 |
}
|
|
|
1385 |
|
|
|
1386 |
|
|
|
1387 |
/**
|
|
|
1388 |
* Listener for scrolling events initiated in the
|
|
|
1389 |
* <code>ScrollPane</code>.
|
|
|
1390 |
*/
|
|
|
1391 |
protected class ScrollListener implements ActionListener
|
|
|
1392 |
{
|
|
|
1393 |
int direction = +1;
|
|
|
1394 |
boolean useBlockIncrement;
|
|
|
1395 |
|
|
|
1396 |
public ScrollListener() {
|
|
|
1397 |
direction = +1;
|
|
|
1398 |
useBlockIncrement = false;
|
|
|
1399 |
}
|
|
|
1400 |
|
|
|
1401 |
public ScrollListener(int dir, boolean block) {
|
|
|
1402 |
direction = dir;
|
|
|
1403 |
useBlockIncrement = block;
|
|
|
1404 |
}
|
|
|
1405 |
|
|
|
1406 |
public void setDirection(int direction) { this.direction = direction; }
|
|
|
1407 |
public void setScrollByBlock(boolean block) { this.useBlockIncrement = block; }
|
|
|
1408 |
|
|
|
1409 |
public void actionPerformed(ActionEvent e) {
|
|
|
1410 |
if(useBlockIncrement) {
|
|
|
1411 |
scrollByBlock(direction);
|
|
|
1412 |
// Stop scrolling if the thumb catches up with the mouse
|
|
|
1413 |
if(scrollbar.getOrientation() == JScrollBar.VERTICAL) {
|
|
|
1414 |
if(direction > 0) {
|
|
|
1415 |
if(getThumbBounds().y + getThumbBounds().height
|
|
|
1416 |
>= trackListener.currentMouseY)
|
|
|
1417 |
((Timer)e.getSource()).stop();
|
|
|
1418 |
} else if(getThumbBounds().y <= trackListener.currentMouseY) {
|
|
|
1419 |
((Timer)e.getSource()).stop();
|
|
|
1420 |
}
|
|
|
1421 |
} else {
|
|
|
1422 |
if ((direction > 0 && !isMouseAfterThumb())
|
|
|
1423 |
|| (direction < 0 && !isMouseBeforeThumb())) {
|
|
|
1424 |
|
|
|
1425 |
((Timer)e.getSource()).stop();
|
|
|
1426 |
}
|
|
|
1427 |
}
|
|
|
1428 |
} else {
|
|
|
1429 |
scrollByUnit(direction);
|
|
|
1430 |
}
|
|
|
1431 |
|
|
|
1432 |
if(direction > 0
|
|
|
1433 |
&& scrollbar.getValue()+scrollbar.getVisibleAmount()
|
|
|
1434 |
>= scrollbar.getMaximum())
|
|
|
1435 |
((Timer)e.getSource()).stop();
|
|
|
1436 |
else if(direction < 0
|
|
|
1437 |
&& scrollbar.getValue() <= scrollbar.getMinimum())
|
|
|
1438 |
((Timer)e.getSource()).stop();
|
|
|
1439 |
}
|
|
|
1440 |
}
|
|
|
1441 |
|
|
|
1442 |
private boolean isMouseLeftOfThumb() {
|
|
|
1443 |
return trackListener.currentMouseX < getThumbBounds().x;
|
|
|
1444 |
}
|
|
|
1445 |
|
|
|
1446 |
private boolean isMouseRightOfThumb() {
|
|
|
1447 |
Rectangle tb = getThumbBounds();
|
|
|
1448 |
return trackListener.currentMouseX > tb.x + tb.width;
|
|
|
1449 |
}
|
|
|
1450 |
|
|
|
1451 |
private boolean isMouseBeforeThumb() {
|
|
|
1452 |
return scrollbar.getComponentOrientation().isLeftToRight()
|
|
|
1453 |
? isMouseLeftOfThumb()
|
|
|
1454 |
: isMouseRightOfThumb();
|
|
|
1455 |
}
|
|
|
1456 |
|
|
|
1457 |
private boolean isMouseAfterThumb() {
|
|
|
1458 |
return scrollbar.getComponentOrientation().isLeftToRight()
|
|
|
1459 |
? isMouseRightOfThumb()
|
|
|
1460 |
: isMouseLeftOfThumb();
|
|
|
1461 |
}
|
|
|
1462 |
|
|
|
1463 |
private void updateButtonDirections() {
|
|
|
1464 |
int orient = scrollbar.getOrientation();
|
|
|
1465 |
if (scrollbar.getComponentOrientation().isLeftToRight()) {
|
|
|
1466 |
if (incrButton instanceof BasicArrowButton) {
|
|
|
1467 |
((BasicArrowButton)incrButton).setDirection(
|
|
|
1468 |
orient == HORIZONTAL? EAST : SOUTH);
|
|
|
1469 |
}
|
|
|
1470 |
if (decrButton instanceof BasicArrowButton) {
|
|
|
1471 |
((BasicArrowButton)decrButton).setDirection(
|
|
|
1472 |
orient == HORIZONTAL? WEST : NORTH);
|
|
|
1473 |
}
|
|
|
1474 |
}
|
|
|
1475 |
else {
|
|
|
1476 |
if (incrButton instanceof BasicArrowButton) {
|
|
|
1477 |
((BasicArrowButton)incrButton).setDirection(
|
|
|
1478 |
orient == HORIZONTAL? WEST : SOUTH);
|
|
|
1479 |
}
|
|
|
1480 |
if (decrButton instanceof BasicArrowButton) {
|
|
|
1481 |
((BasicArrowButton)decrButton).setDirection(
|
|
|
1482 |
orient == HORIZONTAL ? EAST : NORTH);
|
|
|
1483 |
}
|
|
|
1484 |
}
|
|
|
1485 |
}
|
|
|
1486 |
|
|
|
1487 |
public class PropertyChangeHandler implements PropertyChangeListener
|
|
|
1488 |
{
|
|
|
1489 |
// NOTE: This class exists only for backward compatability. All
|
|
|
1490 |
// its functionality has been moved into Handler. If you need to add
|
|
|
1491 |
// new functionality add it to the Handler, but make sure this
|
|
|
1492 |
// class calls into the Handler.
|
|
|
1493 |
|
|
|
1494 |
public void propertyChange(PropertyChangeEvent e) {
|
|
|
1495 |
getHandler().propertyChange(e);
|
|
|
1496 |
}
|
|
|
1497 |
}
|
|
|
1498 |
|
|
|
1499 |
|
|
|
1500 |
/**
|
|
|
1501 |
* Used for scrolling the scrollbar.
|
|
|
1502 |
*/
|
|
|
1503 |
private static class Actions extends UIAction {
|
|
|
1504 |
private static final String POSITIVE_UNIT_INCREMENT =
|
|
|
1505 |
"positiveUnitIncrement";
|
|
|
1506 |
private static final String POSITIVE_BLOCK_INCREMENT =
|
|
|
1507 |
"positiveBlockIncrement";
|
|
|
1508 |
private static final String NEGATIVE_UNIT_INCREMENT =
|
|
|
1509 |
"negativeUnitIncrement";
|
|
|
1510 |
private static final String NEGATIVE_BLOCK_INCREMENT =
|
|
|
1511 |
"negativeBlockIncrement";
|
|
|
1512 |
private static final String MIN_SCROLL = "minScroll";
|
|
|
1513 |
private static final String MAX_SCROLL = "maxScroll";
|
|
|
1514 |
|
|
|
1515 |
Actions(String name) {
|
|
|
1516 |
super(name);
|
|
|
1517 |
}
|
|
|
1518 |
|
|
|
1519 |
public void actionPerformed(ActionEvent e) {
|
|
|
1520 |
JScrollBar scrollBar = (JScrollBar)e.getSource();
|
|
|
1521 |
String key = getName();
|
|
|
1522 |
if (key == POSITIVE_UNIT_INCREMENT) {
|
|
|
1523 |
scroll(scrollBar, POSITIVE_SCROLL, false);
|
|
|
1524 |
}
|
|
|
1525 |
else if (key == POSITIVE_BLOCK_INCREMENT) {
|
|
|
1526 |
scroll(scrollBar, POSITIVE_SCROLL, true);
|
|
|
1527 |
}
|
|
|
1528 |
else if (key == NEGATIVE_UNIT_INCREMENT) {
|
|
|
1529 |
scroll(scrollBar, NEGATIVE_SCROLL, false);
|
|
|
1530 |
}
|
|
|
1531 |
else if (key == NEGATIVE_BLOCK_INCREMENT) {
|
|
|
1532 |
scroll(scrollBar, NEGATIVE_SCROLL, true);
|
|
|
1533 |
}
|
|
|
1534 |
else if (key == MIN_SCROLL) {
|
|
|
1535 |
scroll(scrollBar, BasicScrollBarUI.MIN_SCROLL, true);
|
|
|
1536 |
}
|
|
|
1537 |
else if (key == MAX_SCROLL) {
|
|
|
1538 |
scroll(scrollBar, BasicScrollBarUI.MAX_SCROLL, true);
|
|
|
1539 |
}
|
|
|
1540 |
}
|
|
|
1541 |
private void scroll(JScrollBar scrollBar, int dir, boolean block) {
|
|
|
1542 |
|
|
|
1543 |
if (dir == NEGATIVE_SCROLL || dir == POSITIVE_SCROLL) {
|
|
|
1544 |
int amount;
|
|
|
1545 |
// Don't use the BasicScrollBarUI.scrollByXXX methods as we
|
|
|
1546 |
// don't want to use an invokeLater to reset the trackHighlight
|
|
|
1547 |
// via an invokeLater
|
|
|
1548 |
if (block) {
|
|
|
1549 |
if (dir == NEGATIVE_SCROLL) {
|
|
|
1550 |
amount = -1 * scrollBar.getBlockIncrement(-1);
|
|
|
1551 |
}
|
|
|
1552 |
else {
|
|
|
1553 |
amount = scrollBar.getBlockIncrement(1);
|
|
|
1554 |
}
|
|
|
1555 |
}
|
|
|
1556 |
else {
|
|
|
1557 |
if (dir == NEGATIVE_SCROLL) {
|
|
|
1558 |
amount = -1 * scrollBar.getUnitIncrement(-1);
|
|
|
1559 |
}
|
|
|
1560 |
else {
|
|
|
1561 |
amount = scrollBar.getUnitIncrement(1);
|
|
|
1562 |
}
|
|
|
1563 |
}
|
|
|
1564 |
scrollBar.setValue(scrollBar.getValue() + amount);
|
|
|
1565 |
}
|
|
|
1566 |
else if (dir == BasicScrollBarUI.MIN_SCROLL) {
|
|
|
1567 |
scrollBar.setValue(scrollBar.getMinimum());
|
|
|
1568 |
}
|
|
|
1569 |
else if (dir == BasicScrollBarUI.MAX_SCROLL) {
|
|
|
1570 |
scrollBar.setValue(scrollBar.getMaximum());
|
|
|
1571 |
}
|
|
|
1572 |
}
|
|
|
1573 |
}
|
|
|
1574 |
|
|
|
1575 |
|
|
|
1576 |
//
|
|
|
1577 |
// EventHandler
|
|
|
1578 |
//
|
|
|
1579 |
private class Handler implements FocusListener, PropertyChangeListener {
|
|
|
1580 |
//
|
|
|
1581 |
// FocusListener
|
|
|
1582 |
//
|
|
|
1583 |
public void focusGained(FocusEvent e) {
|
|
|
1584 |
scrollbar.repaint();
|
|
|
1585 |
}
|
|
|
1586 |
|
|
|
1587 |
public void focusLost(FocusEvent e) {
|
|
|
1588 |
scrollbar.repaint();
|
|
|
1589 |
}
|
|
|
1590 |
|
|
|
1591 |
|
|
|
1592 |
//
|
|
|
1593 |
// PropertyChangeListener
|
|
|
1594 |
//
|
|
|
1595 |
public void propertyChange(PropertyChangeEvent e) {
|
|
|
1596 |
String propertyName = e.getPropertyName();
|
|
|
1597 |
|
|
|
1598 |
if ("model" == propertyName) {
|
|
|
1599 |
BoundedRangeModel oldModel = (BoundedRangeModel)e.getOldValue();
|
|
|
1600 |
BoundedRangeModel newModel = (BoundedRangeModel)e.getNewValue();
|
|
|
1601 |
oldModel.removeChangeListener(modelListener);
|
|
|
1602 |
newModel.addChangeListener(modelListener);
|
|
|
1603 |
scrollbar.repaint();
|
|
|
1604 |
scrollbar.revalidate();
|
|
|
1605 |
} else if ("orientation" == propertyName) {
|
|
|
1606 |
updateButtonDirections();
|
|
|
1607 |
} else if ("componentOrientation" == propertyName) {
|
|
|
1608 |
updateButtonDirections();
|
|
|
1609 |
InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED);
|
|
|
1610 |
SwingUtilities.replaceUIInputMap(scrollbar, JComponent.WHEN_FOCUSED, inputMap);
|
|
|
1611 |
}
|
|
|
1612 |
}
|
|
|
1613 |
}
|
|
|
1614 |
}
|