Tab按钮在左侧时，文字、图标竖排，知道重载MetalTabbedPaneUI即可：
//PolarmanTabbedPaneUI.java
package polarman.gui;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.font.FontRenderContext;
import java.awt.font.LineBreakMeasurer;
import java.awt.font.TextAttribute;
import java.awt.font.TextLayout;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.text.AttributedCharacterIterator;
import java.text.AttributedString;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JTabbedPane;
import javax.swing.SwingUtilities;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.metal.MetalTabbedPaneUI;
import javax.swing.text.View;
public class PolarmanTabbedPaneUI extends MetalTabbedPaneUI {
protected int minTabWidth = 20;
public PolarmanTabbedPaneUI(){
}
public static ComponentUI createUI( JComponent x ) {
return new PolarmanTabbedPaneUI();
}
protected int calculateTabHeight(int tabPlacement, int tabIndex, int fontHeight) {
if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT)
return super.calculateTabHeight(tabPlacement, tabIndex, fontHeight);
else{
int h = 0;
FontMetrics fm = tabPane.getFontMetrics(tabPane.getFont());
Icon icon = tabPane.getIconAt(tabIndex);
String title = tabPane.getTitleAt(tabIndex);
if(title == null)
title = "";
h = fm.stringWidth(title) + textIconGap + 6;
if(icon != null)
h += icon.getIconWidth();
return h;
}
}
protected int calculateTabWidth(int tabPlacement, int tabIndex, FontMetrics metrics) {
if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT)
return super.calculateTabWidth(tabPlacement, tabIndex, metrics);
else{
int w = PolarmanTabbedPaneUI.this.minTabWidth;
FontMetrics fm = tabPane.getFontMetrics(tabPane.getFont());
if(w < fm.getHeight() + 4)
w = fm.getHeight() + 4;
Icon icon = tabPane.getIconAt(tabIndex);
if(icon != null && w < icon.getIconHeight() + 6)
w = icon.getIconHeight() + 6;
return w;
}
}
protected void layoutLabel(int tabPlacement, FontMetrics metrics,
int tabIndex, String title, Icon icon, Rectangle tabRect,
Rectangle iconRect, Rectangle textRect, boolean isSelected) {
if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){
super.layoutLabel(tabPlacement, metrics, tabIndex, title, icon, tabRect, iconRect, textRect, isSelected);
return;
}
textRect.x = textRect.y = iconRect.x = iconRect.y = 0;
View v = getTextViewForTab(tabIndex);
if (v != null) {
tabPane.putClientProperty("html", v);
}
SwingUtilities.layoutCompoundLabel((JComponent) tabPane, metrics,
title, icon, SwingUtilities.CENTER, SwingUtilities.CENTER,
SwingUtilities.CENTER, SwingUtilities.TRAILING, tabRect,
iconRect, textRect, textIconGap);
tabPane.putClientProperty("html", null);
textRect.height = metrics.stringWidth(title);
textRect.width = metrics.getHeight();
iconRect.width = icon.getIconHeight();
iconRect.height = icon.getIconWidth();
textRect.x = (tabRect.width - metrics.getHeight()) / 2 + tabRect.x;
textRect.y = (tabRect.height - textRect.height - iconRect.height - textIconGap) / 2 + tabRect.y;
iconRect.x = (tabRect.width - iconRect.width) / 2 + tabRect.x;
iconRect.y = textRect.y + textRect.height + textIconGap;
}
protected void paintIcon(Graphics g, int tabPlacement, int tabIndex, Icon icon, Rectangle iconRect, boolean isSelected) {
if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){
super.paintIcon(g, tabPlacement, tabIndex, icon, iconRect, isSelected);
return;
}
int a = icon.getIconHeight() > icon.getIconWidth() ? icon.getIconHeight() : icon.getIconWidth();
BufferedImage memImage = new BufferedImage(a, a, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2d = (Graphics2D)memImage.getGraphics();
AffineTransform at = AffineTransform.getTranslateInstance(a / 2, a / 2);
at.rotate(1.5 * Math.PI);
g2d.transform(at);
icon.paintIcon(null, g2d, -icon.getIconWidth()/2, -icon.getIconHeight()/2);
int dx1 = iconRect.x + (iconRect.width - icon.getIconHeight())/2;
int dy1 = iconRect.y + (iconRect.height - icon.getIconWidth())/2;
int dx2 = dx1 + icon.getIconHeight();
int dy2 = dy1 + icon.getIconWidth();
int sx1 = (a - icon.getIconHeight()) / 2;
int sx2 = sx1 + icon.getIconHeight();
int sy1 = (a - icon.getIconWidth()) / 2;
int sy2 = sy1 + icon.getIconWidth();
g.drawImage(memImage,
dx1,dy1,dx2,dy2,
sx1,sy1,sx2,sy2,
tabPane);
}
protected void paintText(Graphics g, int tabPlacement, Font font, FontMetrics metrics, int tabIndex, String title, Rectangle textRect, boolean isSelected) {
if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){
super.paintText(g, tabPlacement, font, metrics, tabIndex, title, textRect, isSelected);
return;
}
if(title == null || title.equals(""))
return;
int w = metrics.stringWidth(title);
int h = metrics.getHeight();
Graphics2D g2d = (Graphics2D)g;
g2d.setColor(tabPane.getForeground());
g2d.setFont(font);
AttributedString as = new AttributedString(title);
AttributedCharacterIterator aci;
AffineTransform fontAT = new AffineTransform();
fontAT.rotate(Math.toRadians(-90));
Font fx = font.deriveFont(fontAT);
as.addAttribute(TextAttribute.FONT, fx, 0, title.length());
aci = as.getIterator();
FontRenderContext frc = g2d.getFontRenderContext();
LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);
float x = textRect.x + (textRect.width + h) / 2 - 2;
float y = textRect.y + (textRect.height + w) / 2;
lbm.setPosition(0);
while (lbm.getPosition() < title.length()) {
TextLayout tl = lbm.nextLayout(w-x);
//PolarmanTabbedPaneUI.java
package polarman.gui;import java.awt.Font;import java.awt.FontMetrics;import java.awt.Graphics;import java.awt.Graphics2D;import java.awt.Rectangle;import java.awt.font.FontRenderContext;import java.awt.font.LineBreakMeasurer;import java.awt.font.TextAttribute;import java.awt.font.TextLayout;import java.awt.geom.AffineTransform;import java.awt.image.BufferedImage;import java.text.AttributedCharacterIterator;import java.text.AttributedString;import javax.swing.Icon;import javax.swing.JComponent;import javax.swing.JTabbedPane;import javax.swing.SwingUtilities;import javax.swing.plaf.ComponentUI;import javax.swing.plaf.metal.MetalTabbedPaneUI;import javax.swing.text.View;public class PolarmanTabbedPaneUI extends MetalTabbedPaneUI {
protected int minTabWidth = 20; public PolarmanTabbedPaneUI(){
} public static ComponentUI createUI( JComponent x ) { return new PolarmanTabbedPaneUI(); } protected int calculateTabHeight(int tabPlacement, int tabIndex, int fontHeight) { if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT) return super.calculateTabHeight(tabPlacement, tabIndex, fontHeight); else{ int h = 0; FontMetrics fm = tabPane.getFontMetrics(tabPane.getFont()); Icon icon = tabPane.getIconAt(tabIndex); String title = tabPane.getTitleAt(tabIndex); if(title == null) title = ""; h = fm.stringWidth(title) + textIconGap + 6; if(icon != null) h += icon.getIconWidth(); return h; } } protected int calculateTabWidth(int tabPlacement, int tabIndex, FontMetrics metrics) { if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT) return super.calculateTabWidth(tabPlacement, tabIndex, metrics); else{ int w = PolarmanTabbedPaneUI.this.minTabWidth; FontMetrics fm = tabPane.getFontMetrics(tabPane.getFont()); if(w < fm.getHeight() + 4) w = fm.getHeight() + 4; Icon icon = tabPane.getIconAt(tabIndex); if(icon != null && w < icon.getIconHeight() + 6) w = icon.getIconHeight() + 6; return w; } } protected void layoutLabel(int tabPlacement, FontMetrics metrics, int tabIndex, String title, Icon icon, Rectangle tabRect, Rectangle iconRect, Rectangle textRect, boolean isSelected) { if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){ super.layoutLabel(tabPlacement, metrics, tabIndex, title, icon, tabRect, iconRect, textRect, isSelected); return; } textRect.x = textRect.y = iconRect.x = iconRect.y = 0; View v = getTextViewForTab(tabIndex); if (v != null) { tabPane.putClientProperty("html", v); } SwingUtilities.layoutCompoundLabel((JComponent) tabPane, metrics, title, icon, SwingUtilities.CENTER, SwingUtilities.CENTER, SwingUtilities.CENTER, SwingUtilities.TRAILING, tabRect, iconRect, textRect, textIconGap); tabPane.putClientProperty("html", null); textRect.height = metrics.stringWidth(title); textRect.width = metrics.getHeight(); iconRect.width = icon.getIconHeight(); iconRect.height = icon.getIconWidth(); textRect.x = (tabRect.width - metrics.getHeight()) / 2 + tabRect.x; textRect.y = (tabRect.height - textRect.height - iconRect.height - textIconGap) / 2 + tabRect.y; iconRect.x = (tabRect.width - iconRect.width) / 2 + tabRect.x; iconRect.y = textRect.y + textRect.height + textIconGap; } protected void paintIcon(Graphics g, int tabPlacement, int tabIndex, Icon icon, Rectangle iconRect, boolean isSelected) { if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){ super.paintIcon(g, tabPlacement, tabIndex, icon, iconRect, isSelected); return; } int a = icon.getIconHeight() > icon.getIconWidth() ? icon.getIconHeight() : icon.getIconWidth(); BufferedImage memImage = new BufferedImage(a, a, BufferedImage.TYPE_INT_ARGB); Graphics2D g2d = (Graphics2D)memImage.getGraphics(); AffineTransform at = AffineTransform.getTranslateInstance(a / 2, a / 2); at.rotate(1.5 * Math.PI); g2d.transform(at); icon.paintIcon(null, g2d, -icon.getIconWidth()/2, -icon.getIconHeight()/2); int dx1 = iconRect.x + (iconRect.width - icon.getIconHeight())/2; int dy1 = iconRect.y + (iconRect.height - icon.getIconWidth())/2; int dx2 = dx1 + icon.getIconHeight(); int dy2 = dy1 + icon.getIconWidth(); int sx1 = (a - icon.getIconHeight()) / 2; int sx2 = sx1 + icon.getIconHeight(); int sy1 = (a - icon.getIconWidth()) / 2; int sy2 = sy1 + icon.getIconWidth(); g.drawImage(memImage, dx1,dy1,dx2,dy2, sx1,sy1,sx2,sy2, tabPane); } protected void paintText(Graphics g, int tabPlacement, Font font, FontMetrics metrics, int tabIndex, String title, Rectangle textRect, boolean isSelected) { if(tabPlacement != JTabbedPane.LEFT && tabPlacement != JTabbedPane.RIGHT){ super.paintText(g, tabPlacement, font, metrics, tabIndex, title, textRect, isSelected); return; } if(title == null || title.equals("")) return; int w = metrics.stringWidth(title); int h = metrics.getHeight(); Graphics2D g2d = (Graphics2D)g; g2d.setColor(tabPane.getForeground()); g2d.setFont(font); AttributedString as = new AttributedString(title); AttributedCharacterIterator aci; AffineTransform fontAT = new AffineTransform(); fontAT.rotate(Math.toRadians(-90)); Font fx = font.deriveFont(fontAT); as.addAttribute(TextAttribute.FONT, fx, 0, title.length()); aci = as.getIterator(); FontRenderContext frc = g2d.getFontRenderContext(); LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc); float x = textRect.x + (textRect.width + h) / 2 - 2; float y = textRect.y + (textRect.height + w) / 2; lbm.setPosition(0); while (lbm.getPosition() < title.length()) { TextLayout tl = lbm.nextLayout(w-x);