/*
* Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
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*
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package javax.swing.plaf.metal;
import java.awt.Component;
import java.awt.Container;
import java.awt.LayoutManager;
import java.awt.Adjustable;
import java.awt.event.AdjustmentListener;
import java.awt.event.AdjustmentEvent;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.Rectangle;
import java.awt.Point;
import java.awt.Insets;
import java.awt.Color;
import java.awt.IllegalComponentStateException;
import java.beans.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.BasicScrollBarUI;
/**
* Implementation of ScrollBarUI for the Metal Look and Feel
* <p>
*
* @author Tom Santos
* @author Steve Wilson
*/
public class MetalScrollBarUI extends BasicScrollBarUI
{
private static Color shadowColor;
private static Color highlightColor;
private static Color darkShadowColor;
private static Color thumbColor;
private static Color thumbShadow;
private static Color thumbHighlightColor;
protected MetalBumps bumps;
protected MetalScrollButton increaseButton;
protected MetalScrollButton decreaseButton;
protected int scrollBarWidth;
public static final String FREE_STANDING_PROP = "JScrollBar.isFreeStanding";
protected boolean isFreeStanding = true;
public static ComponentUI createUI( JComponent c )
{
return new MetalScrollBarUI();
}
protected void installDefaults() {
scrollBarWidth = ((Integer)(UIManager.get( "ScrollBar.width" ))).intValue();
super.installDefaults();
bumps = new MetalBumps( 10, 10, thumbHighlightColor, thumbShadow, thumbColor );
}
protected void installListeners(){
super.installListeners();
((ScrollBarListener)propertyChangeListener).handlePropertyChange( scrollbar.getClientProperty( FREE_STANDING_PROP ) );
}
protected PropertyChangeListener createPropertyChangeListener(){
return new ScrollBarListener();
}
protected void configureScrollBarColors()
{
super.configureScrollBarColors();
shadowColor = UIManager.getColor("ScrollBar.shadow");
highlightColor = UIManager.getColor("ScrollBar.highlight");
darkShadowColor = UIManager.getColor("ScrollBar.darkShadow");
thumbColor = UIManager.getColor("ScrollBar.thumb");
thumbShadow = UIManager.getColor("ScrollBar.thumbShadow");
thumbHighlightColor = UIManager.getColor("ScrollBar.thumbHighlight");
}
public Dimension getPreferredSize( JComponent c )
{
if ( scrollbar.getOrientation() == JScrollBar.VERTICAL )
{
return new Dimension( scrollBarWidth, scrollBarWidth * 3 + 10 );
}
else // Horizontal
{
return new Dimension( scrollBarWidth * 3 + 10, scrollBarWidth );
}
}
/** Returns the view that represents the decrease view.
*/
protected JButton createDecreaseButton( int orientation )
{
decreaseButton = new MetalScrollButton( orientation, scrollBarWidth, isFreeStanding );
return decreaseButton;
}
/** Returns the view that represents the increase view. */
protected JButton createIncreaseButton( int orientation )
{
increaseButton = new MetalScrollButton( orientation, scrollBarWidth, isFreeStanding );
return increaseButton;
}
protected void paintTrack( Graphics g, JComponent c, Rectangle trackBounds )
{
g.translate( trackBounds.x, trackBounds.y );
boolean leftToRight = MetalUtils.isLeftToRight(c);
if ( scrollbar.getOrientation() == JScrollBar.VERTICAL )
{
if ( !isFreeStanding ) {
trackBounds.width += 2;
if ( !leftToRight ) {
g.translate( -1, 0 );
}
}
if ( c.isEnabled() ) {
g.setColor( darkShadowColor );
g.drawLine( 0, 0, 0, trackBounds.height - 1 );
g.drawLine( trackBounds.width - 2, 0, trackBounds.width - 2, trackBounds.height - 1 );
g.drawLine( 2, trackBounds.height - 1, trackBounds.width - 1, trackBounds.height - 1);
g.drawLine( 2, 0, trackBounds.width - 2, 0 );
g.setColor( shadowColor );
// g.setColor( Color.red);
g.drawLine( 1, 1, 1, trackBounds.height - 2 );
g.drawLine( 1, 1, trackBounds.width - 3, 1 );
if (scrollbar.getValue() != scrollbar.getMaximum()) { // thumb shadow
int y = thumbRect.y + thumbRect.height - trackBounds.y;
g.drawLine( 1, y, trackBounds.width-1, y);
}
g.setColor(highlightColor);
g.drawLine( trackBounds.width - 1, 0, trackBounds.width - 1, trackBounds.height - 1 );
} else {
MetalUtils.drawDisabledBorder(g, 0, 0, trackBounds.width, trackBounds.height );
}
if ( !isFreeStanding ) {
trackBounds.width -= 2;
if ( !leftToRight ) {
g.translate( 1, 0 );
}
}
}
else // HORIZONTAL
{
if ( !isFreeStanding ) {
trackBounds.height += 2;
}
if ( c.isEnabled() ) {
g.setColor( darkShadowColor );
g.drawLine( 0, 0, trackBounds.width - 1, 0 ); // top
g.drawLine( 0, 2, 0, trackBounds.height - 2 ); // left
g.drawLine( 0, trackBounds.height - 2, trackBounds.width - 1, trackBounds.height - 2 ); // bottom
g.drawLine( trackBounds.width - 1, 2, trackBounds.width - 1, trackBounds.height - 1 ); // right
g.setColor( shadowColor );
// g.setColor( Color.red);
g.drawLine( 1, 1, trackBounds.width - 2, 1 ); // top
g.drawLine( 1, 1, 1, trackBounds.height - 3 ); // left
g.drawLine( 0, trackBounds.height - 1, trackBounds.width - 1, trackBounds.height - 1 ); // bottom
if (scrollbar.getValue() != scrollbar.getMaximum()) { // thumb shadow
int x = thumbRect.x + thumbRect.width - trackBounds.x;
g.drawLine( x, 1, x, trackBounds.height-1);
}
} else {
MetalUtils.drawDisabledBorder(g, 0, 0, trackBounds.width, trackBounds.height );
}
if ( !isFreeStanding ) {
trackBounds.height -= 2;
}
}
g.translate( -trackBounds.x, -trackBounds.y );
}
protected void paintThumb( Graphics g, JComponent c, Rectangle thumbBounds )
{
if (!c.isEnabled()) {
return;
}
if (MetalLookAndFeel.usingOcean()) {
oceanPaintThumb(g, c, thumbBounds);
return;
}
boolean leftToRight = MetalUtils.isLeftToRight(c);
g.translate( thumbBounds.x, thumbBounds.y );
if ( scrollbar.getOrientation() == JScrollBar.VERTICAL )
{
if ( !isFreeStanding ) {
thumbBounds.width += 2;
if ( !leftToRight ) {
g.translate( -1, 0 );
}
}
g.setColor( thumbColor );
g.fillRect( 0, 0, thumbBounds.width - 2, thumbBounds.height - 1 );
g.setColor( thumbShadow );
g.drawRect( 0, 0, thumbBounds.width - 2, thumbBounds.height - 1 );
g.setColor( thumbHighlightColor );
g.drawLine( 1, 1, thumbBounds.width - 3, 1 );
g.drawLine( 1, 1, 1, thumbBounds.height - 2 );
bumps.setBumpArea( thumbBounds.width - 6, thumbBounds.height - 7 );
bumps.paintIcon( c, g, 3, 4 );
if ( !isFreeStanding ) {
thumbBounds.width -= 2;
if ( !leftToRight ) {
g.translate( 1, 0 );
}
}
}
else // HORIZONTAL
{
if ( !isFreeStanding ) {
thumbBounds.height += 2;
}
g.setColor( thumbColor );
g.fillRect( 0, 0, thumbBounds.width - 1, thumbBounds.height - 2 );
g.setColor( thumbShadow );
g.drawRect( 0, 0, thumbBounds.width - 1, thumbBounds.height - 2 );
g.setColor( thumbHighlightColor );
g.drawLine( 1, 1, thumbBounds.width - 3, 1 );
g.drawLine( 1, 1, 1, thumbBounds.height - 3 );
bumps.setBumpArea( thumbBounds.width - 7, thumbBounds.height - 6 );
bumps.paintIcon( c, g, 4, 3 );
if ( !isFreeStanding ) {
thumbBounds.height -= 2;
}
}
g.translate( -thumbBounds.x, -thumbBounds.y );
}
private void oceanPaintThumb(Graphics g, JComponent c,
Rectangle thumbBounds) {
boolean leftToRight = MetalUtils.isLeftToRight(c);
g.translate(thumbBounds.x, thumbBounds.y);
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
if (!isFreeStanding) {
thumbBounds.width += 2;
if (!leftToRight) {
g.translate(-1, 0);
}
}
if (thumbColor != null) {
g.setColor(thumbColor);
g.fillRect(0, 0, thumbBounds.width - 2,thumbBounds.height - 1);
}
g.setColor(thumbShadow);
g.drawRect(0, 0, thumbBounds.width - 2, thumbBounds.height - 1);
g.setColor(thumbHighlightColor);
g.drawLine(1, 1, thumbBounds.width - 3, 1);
g.drawLine(1, 1, 1, thumbBounds.height - 2);
MetalUtils.drawGradient(c, g, "ScrollBar.gradient", 2, 2,
thumbBounds.width - 4,
thumbBounds.height - 3, false);
int gripSize = thumbBounds.width - 8;
if (gripSize > 2 && thumbBounds.height >= 10) {
g.setColor(MetalLookAndFeel.getPrimaryControlDarkShadow());
int gripY = thumbBounds.height / 2 - 2;
for (int counter = 0; counter < 6; counter += 2) {
g.fillRect(4, counter + gripY, gripSize, 1);
}
g.setColor(MetalLookAndFeel.getWhite());
gripY++;
for (int counter = 0; counter < 6; counter += 2) {
g.fillRect(5, counter + gripY, gripSize, 1);
}
}
if (!isFreeStanding) {
thumbBounds.width -= 2;
if (!leftToRight) {
g.translate(1, 0);
}
}
}
else { // HORIZONTAL
if (!isFreeStanding) {
thumbBounds.height += 2;
}
if (thumbColor != null) {
g.setColor(thumbColor);
g.fillRect(0, 0, thumbBounds.width - 1,thumbBounds.height - 2);
}
g.setColor(thumbShadow);
g.drawRect(0, 0, thumbBounds.width - 1, thumbBounds.height - 2);
g.setColor(thumbHighlightColor);
g.drawLine(1, 1, thumbBounds.width - 2, 1);
g.drawLine(1, 1, 1, thumbBounds.height - 3);
MetalUtils.drawGradient(c, g, "ScrollBar.gradient", 2, 2,
thumbBounds.width - 3,
thumbBounds.height - 4, true);
int gripSize = thumbBounds.height - 8;
if (gripSize > 2 && thumbBounds.width >= 10) {
g.setColor(MetalLookAndFeel.getPrimaryControlDarkShadow());
int gripX = thumbBounds.width / 2 - 2;
for (int counter = 0; counter < 6; counter += 2) {
g.fillRect(gripX + counter, 4, 1, gripSize);
}
g.setColor(MetalLookAndFeel.getWhite());
gripX++;
for (int counter = 0; counter < 6; counter += 2) {
g.fillRect(gripX + counter, 5, 1, gripSize);
}
}
if (!isFreeStanding) {
thumbBounds.height -= 2;
}
}
g.translate( -thumbBounds.x, -thumbBounds.y );
}
protected Dimension getMinimumThumbSize()
{
return new Dimension( scrollBarWidth, scrollBarWidth );
}
/**
* This is overridden only to increase the invalid area. This
* ensures that the "Shadow" below the thumb is invalidated
*/
protected void setThumbBounds(int x, int y, int width, int height)
{
/* If the thumbs bounds haven't changed, we're done.
*/
if ((thumbRect.x == x) &&
(thumbRect.y == y) &&
(thumbRect.width == width) &&
(thumbRect.height == height)) {
return;
}
/* Update thumbRect, and repaint the union of x,y,w,h and
* the old thumbRect.
*/
int minX = Math.min(x, thumbRect.x);
int minY = Math.min(y, thumbRect.y);
int maxX = Math.max(x + width, thumbRect.x + thumbRect.width);
int maxY = Math.max(y + height, thumbRect.y + thumbRect.height);
thumbRect.setBounds(x, y, width, height);
scrollbar.repaint(minX, minY, (maxX - minX)+1, (maxY - minY)+1);
}
class ScrollBarListener extends BasicScrollBarUI.PropertyChangeHandler
{
public void propertyChange(PropertyChangeEvent e)
{
String name = e.getPropertyName();
if ( name.equals( FREE_STANDING_PROP ) )
{
handlePropertyChange( e.getNewValue() );
}
else {
super.propertyChange( e );
}
}
public void handlePropertyChange( Object newValue )
{
if ( newValue != null )
{
boolean temp = ((Boolean)newValue).booleanValue();
boolean becameFlush = temp == false && isFreeStanding == true;
boolean becameNormal = temp == true && isFreeStanding == false;
isFreeStanding = temp;
if ( becameFlush ) {
toFlush();
}
else if ( becameNormal ) {
toFreeStanding();
}
}
else
{
if ( !isFreeStanding ) {
isFreeStanding = true;
toFreeStanding();
}
// This commented-out block is used for testing flush scrollbars.
/*
if ( isFreeStanding ) {
isFreeStanding = false;
toFlush();
}
*/
}
if ( increaseButton != null )
{
increaseButton.setFreeStanding( isFreeStanding );
}
if ( decreaseButton != null )
{
decreaseButton.setFreeStanding( isFreeStanding );
}
}
protected void toFlush() {
scrollBarWidth -= 2;
}
protected void toFreeStanding() {
scrollBarWidth += 2;
}
} // end class ScrollBarListener
}