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/*
* Copyright (c) 2002 and later by MH Software-Entwicklung. All Rights Reserved.
*
* JTattoo is multiple licensed. If your are an open source developer you can use
* it under the terms and conditions of the GNU General Public License version 2.0
* or later as published by the Free Software Foundation.
*
* see: gpl-2.0.txt
*
* If you pay for a license you will become a registered user who could use the
* software under the terms and conditions of the GNU Lesser General Public License
* version 2.0 or later with classpath exception as published by the Free Software
* Foundation.
*
* see: lgpl-2.0.txt
* see: classpath-exception.txt
*
* Registered users could also use JTattoo under the terms and conditions of the
* Apache License, Version 2.0 as published by the Apache Software Foundation.
*
* see: APACHE-LICENSE-2.0.txt
*/
package com.jtattoo.plaf;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JScrollBar;
import javax.swing.UIManager;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicScrollBarUI;
/**
* @author Michael Hagen
*/
public class BaseScrollBarUI extends BasicScrollBarUI {
protected int scrollBarWidth = 17;
protected int incrGap = 0;
protected int decrGap = 0;
protected boolean isRollover = false;
public static ComponentUI createUI(JComponent c) {
return new BaseScrollBarUI();
}
protected void installDefaults() {
super.installDefaults();
scrollBarWidth = UIManager.getInt("ScrollBar.width");
incrGap = UIManager.getInt("ScrollBar.incrementButtonGap");
decrGap = UIManager.getInt("ScrollBar.decrementButtonGap");
// TODO this can be removed when incrGap/decrGap become protected
// handle scaling for sizeVarients for special case components. The
// key "JComponent.sizeVariant" scales for large/small/mini
// components are based on Apples LAF
String scaleKey = (String) scrollbar.getClientProperty("JComponent.sizeVariant");
if (scaleKey != null) {
if ("large".equals(scaleKey)) {
scrollBarWidth *= 1.15;
incrGap *= 1.15;
decrGap *= 1.15;
}
else if ("small".equals(scaleKey)) {
scrollBarWidth *= 0.857;
incrGap *= 0.857;
decrGap *= 0.857;
}
else if ("mini".equals(scaleKey)) {
scrollBarWidth *= 0.714;
incrGap *= 0.714;
decrGap *= 0.714;
}
}
}
protected JButton createDecreaseButton(int orientation) {
if (AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
return new InvisibleScrollButton();
}
else {
return new BaseScrollButton(orientation, scrollBarWidth);
}
}
protected JButton createIncreaseButton(int orientation) {
if (AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
return new InvisibleScrollButton();
}
else {
return new BaseScrollButton(orientation, scrollBarWidth);
}
}
public TrackListener createTrackListener() {
return new MyTrackListener();
}
public Dimension getPreferredSize(JComponent c) {
if (AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
return new Dimension(scrollBarWidth + 1, scrollBarWidth * 3);
}
else {
return new Dimension(scrollBarWidth * 3, scrollBarWidth);
}
}
else {
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
return new Dimension(scrollBarWidth, scrollBarWidth * 3 + 16);
}
else {
return new Dimension(scrollBarWidth * 3 + 16, scrollBarWidth);
}
}
}
protected Dimension getMinimumThumbSize() {
return new Dimension(scrollBarWidth, scrollBarWidth);
}
protected void paintTrack(Graphics g, JComponent c, Rectangle trackBounds) {
int w = c.getWidth();
int h = c.getHeight();
if (AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
Color bc = ColorHelper.darker(AbstractLookAndFeel.getTheme().getBackgroundColor(), 4);
g.setColor(bc);
g.fillRect(0, 0, w, h);
}
else {
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
JTattooUtilities.fillVerGradient(g, AbstractLookAndFeel.getTheme().getTrackColors(), 0, 0, w, h);
}
else {
JTattooUtilities.fillHorGradient(g, AbstractLookAndFeel.getTheme().getTrackColors(), 0, 0, w, h);
}
}
}
protected Color[] getThumbColors() {
if (isRollover || isDragging) {
return AbstractLookAndFeel.getTheme().getRolloverColors();
}
else if (!JTattooUtilities.isActive(scrollbar)) {
return AbstractLookAndFeel.getTheme().getInActiveColors();
}
else {
return AbstractLookAndFeel.getTheme().getThumbColors();
}
}
protected void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds) {
if (!c.isEnabled()) {
return;
}
g.translate(thumbBounds.x, thumbBounds.y);
Color colors[] = getThumbColors();
Color frameColorHi = ColorHelper.brighter(colors[1], 20);
Color frameColorLo = ColorHelper.darker(colors[colors.length - 1], 10);
Graphics2D g2D = (Graphics2D) g;
Composite savedComposite = g2D.getComposite();
if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
JTattooUtilities.fillVerGradient(g, colors, 1, 1, thumbBounds.width - 1, thumbBounds.height - 1);
JTattooUtilities.draw3DBorder(g, frameColorLo, ColorHelper.darker(frameColorLo, 15), 0, 0, thumbBounds.width, thumbBounds.height);
g2D.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
g.setColor(frameColorHi);
g.drawLine(1, 1, thumbBounds.width - 2, 1);
g.drawLine(1, 1, 1, thumbBounds.height - 2);
if (!AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
int dx = 5;
int dy = thumbBounds.height / 2 - 3;
int dw = thumbBounds.width - 11;
Color c1 = Color.white;
Color c2 = Color.darkGray;
for (int i = 0; i < 4; i++) {
g.setColor(c1);
g.drawLine(dx, dy, dx + dw, dy);
dy++;
g.setColor(c2);
g.drawLine(dx, dy, dx + dw, dy);
dy++;
}
}
g2D.setComposite(savedComposite);
}
else { // HORIZONTAL
JTattooUtilities.fillHorGradient(g, colors, 1, 1, thumbBounds.width - 1, thumbBounds.height - 1);
JTattooUtilities.draw3DBorder(g, frameColorLo, ColorHelper.darker(frameColorLo, 10), 0, 0, thumbBounds.width, thumbBounds.height);
g2D.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f));
g.setColor(frameColorHi);
g.drawLine(1, 1, thumbBounds.width - 2, 1);
g.drawLine(1, 1, 1, thumbBounds.height - 2);
if (!AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
int dx = thumbBounds.width / 2 - 3;
int dy = 5;
int dh = thumbBounds.height - 11;
Color c1 = Color.white;
Color c2 = Color.darkGray;
for (int i = 0; i < 4; i++) {
g.setColor(c1);
g.drawLine(dx, dy, dx, dy + dh);
dx++;
g.setColor(c2);
g.drawLine(dx, dy, dx, dy + dh);
dx++;
}
}
}
g2D.setComposite(savedComposite);
g.translate(-thumbBounds.x, -thumbBounds.y);
}
protected void layoutVScrollbar(JScrollBar sb) {
if (AbstractLookAndFeel.getTheme().isLinuxStyleScrollBarOn() && incrButton.isVisible() && decrButton.isVisible()) {
Dimension sbSize = sb.getSize();
Insets sbInsets = sb.getInsets();
int sizeH = sbSize.height - sbInsets.top - sbInsets.bottom;
/*
* Width and left edge of the buttons and thumb.
*/
int itemX = sbInsets.left;
int itemW = sbSize.width - (sbInsets.left + sbInsets.right);
int itemH = Math.min(itemW, sizeH / 2);
/*
* Nominal locations of the buttons, assuming their preferred size will fit.
*/
int decrButtonY = sbSize.height - sbInsets.bottom - itemH - itemH + 1;
int incrButtonY = sbSize.height - sbInsets.bottom - itemH;
/*
* Compute the height and origin of the thumb. The case where the thumb is at the bottom edge is handled specially to avoid numerical problems
* in computing thumbY. Enforce the thumbs min/max dimensions. If the thumb doesn't fit in the track (trackH) we'll hide it later.
*/
float trackH = sbSize.height - sbInsets.top - sbInsets.bottom - itemW - itemW + 1;
float min = sb.getMinimum();
float max = sb.getMaximum();
float extent = sb.getVisibleAmount();
float range = max - min;
float value = sb.getValue();
int maxThumbH = getMaximumThumbSize().height;
int minThumbH = getMinimumThumbSize().height;
int thumbH = (range <= 0) ? maxThumbH : (int) (trackH * (extent / range));
thumbH = Math.max(thumbH, minThumbH);
thumbH = Math.min(thumbH, maxThumbH);
int thumbY = decrButtonY - thumbH;
if (value < (max - extent)) {
float thumbRange = trackH - thumbH;
thumbY = (int) (0.5f + (thumbRange * ((value - min) / (range - extent))));
}
/*
* If the thumb isn't going to fit, zero it's bounds. Otherwise make sure it fits between the buttons. Note that setting the thumbs bounds will
* cause a repaint.
*/
if (thumbH > trackH) {
setThumbBounds(0, 0, 0, 0);
}
else {
setThumbBounds(itemX, thumbY, itemW, thumbH);
}
decrButton.setBounds(itemX, decrButtonY, itemW, itemH);
incrButton.setBounds(itemX, incrButtonY, itemW, itemH);
/*
* Update the trackRect field.
*/
trackRect.setBounds(itemX, 0, itemW, (int) trackH);
}
else {
super.layoutVScrollbar(sb);
}
}
protected void layoutHScrollbar(JScrollBar sb) {
if (AbstractLookAndFeel.getTheme().isLinuxStyleScrollBarOn() && incrButton.isVisible() && decrButton.isVisible()) {
Dimension sbSize = sb.getSize();
Insets sbInsets = sb.getInsets();
int sizeW = sbSize.width - sbInsets.left - sbInsets.right;
/*
* Height and top edge of the buttons and thumb.
*/
int itemY = sbInsets.top;
int itemH = sbSize.height - (sbInsets.top + sbInsets.bottom);// Math.min(itemW, sizeH / 2);
int itemW = Math.min(itemH, sizeW / 2);// sbSize.width - (sbInsets.left + sbInsets.right);
/*
* Nominal locations of the buttons, assuming their preferred size will fit.
*/
int decrButtonX = sbSize.width - sbInsets.right - itemW - itemW + 1;
int incrButtonX = sbSize.width - sbInsets.right - itemW;
/*
* Compute the width and origin of the thumb. The case where the thumb is at the right edge is handled specially to avoid numerical problems in
* computing thumbX. Enforce the thumbs min/max dimensions. If the thumb doesn't fit in the track (trackW) we'll hide it later.
*/
float trackW = sbSize.width - sbInsets.left - sbInsets.right - itemH - itemH + 1;
float min = sb.getMinimum();
float max = sb.getMaximum();
float extent = sb.getVisibleAmount();
float range = max - min;
float value = sb.getValue();
int maxThumbW = getMaximumThumbSize().width;
int minThumbW = getMinimumThumbSize().width;
int thumbW = (range <= 0) ? maxThumbW : (int) (trackW * (extent / range));
thumbW = Math.max(thumbW, minThumbW);
thumbW = Math.min(thumbW, maxThumbW);
int thumbX = decrButtonX - thumbW;
if (value < (max - extent)) {
float thumbRange = trackW - thumbW;
thumbX = (int) (0.5f + (thumbRange * ((value - min) / (range - extent))));
}
/*
* If the thumb isn't going to fit, zero it's bounds. Otherwise make sure it fits between the buttons. Note that setting the thumbs bounds will
* cause a repaint.
*/
if (thumbW > trackW) {
setThumbBounds(0, 0, 0, 0);
}
else {
setThumbBounds(thumbX, itemY, thumbW, itemH);
}
decrButton.setBounds(decrButtonX, itemY, itemW, itemH);
incrButton.setBounds(incrButtonX, itemY, itemW, itemH);
/*
* Update the trackRect field.
*/
trackRect.setBounds(0, itemY, (int) trackW, itemH);
}
else {
super.layoutHScrollbar(sb);
}
}
// -----------------------------------------------------------------------------
// inner classes
// -----------------------------------------------------------------------------
protected class MyTrackListener extends TrackListener {
public void mouseEntered(MouseEvent e) {
super.mouseEntered(e);
isRollover = true;
Rectangle r = getTrackBounds();
scrollbar.repaint(r.x, r.y, r.width, r.height);
}
public void mouseExited(MouseEvent e) {
super.mouseExited(e);
isRollover = false;
Rectangle r = getTrackBounds();
scrollbar.repaint(r.x, r.y, r.width, r.height);
}
public void mousePressed(MouseEvent e) {
super.mousePressed(e);
Rectangle r = getTrackBounds();
scrollbar.repaint(r.x, r.y, r.width, r.height);
}
public void mouseReleased(MouseEvent e) {
super.mouseReleased(e);
Rectangle r = getTrackBounds();
scrollbar.repaint(r.x, r.y, r.width, r.height);
}
}
// -----------------------------------------------------------------------------
private static class InvisibleScrollButton extends JButton {
public InvisibleScrollButton() {
super();
setVisible(false);
}
public Dimension getPreferredSize() {
return new Dimension(0, 0);
}
}
}
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