How can I change the shape of a JTabbedPane tab?
correct way is only to change Look and Feel, nice example from Old.Java.Forums.Sun
import java.awt.BorderLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
public class TabbedPane extends JPanel {
private static final long serialVersionUID = 1L;
public TabbedPane() {
setLayout(new BorderLayout());
JPanel jp = new JPanel();
jp.setLayout(new BorderLayout());
JTabbedPane tb = new JTabbedPane();
tb.setUI(new CustomTabbedPaneUI());
tb.add("Tab1", new JTextArea(""));
tb.add("Tab2", new JTextArea(""));
tb.add("Tab3", new JTextArea(""));
tb.add("Tab4", new JTextArea(""));
tb.add("Tab5", new JTextArea(""));
jp.add(tb, BorderLayout.CENTER);
add(jp, BorderLayout.CENTER);
tb.setEnabledAt(1, false);
tb.setEnabledAt(3, false);
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.getContentPane().add(new TabbedPane());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500, 200);
frame.setVisible(true);
}
}
and
import java.util.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import javax.swing.text.View;
public class CustomTabbedPaneUI extends BasicTabbedPaneUI {
private Color selectColor;
private Color deSelectColor;
private int inclTab = 4;
private int anchoFocoV = inclTab;
private int anchoFocoH = 4;
private int anchoCarpetas = 18;
private Polygon shape;
public static ComponentUI createUI(JComponent c) {
return new CustomTabbedPaneUI();
}
@Override
protected void installDefaults() {
super.installDefaults();
selectColor = new Color(250, 192, 192);
deSelectColor = new Color(197, 193, 168);
tabAreaInsets.right = anchoCarpetas;
}
@Override
protected void paintTabArea(Graphics g, int tabPlacement, int selectedIndex) {
if (runCount > 1) {
int lines[] = new int[runCount];
for (int i = 0; i < runCount; i++) {
lines[i] = rects[tabRuns[i]].y + (tabPlacement == TOP ? maxTabHeight : 0);
}
Arrays.sort(lines);
if (tabPlacement == TOP) {
int fila = runCount;
for (int i = 0; i < lines.length - 1; i++, fila--) {
Polygon carp = new Polygon();
carp.addPoint(0, lines[i]);
carp.addPoint(tabPane.getWidth() - 2 * fila - 2, lines[i]);
carp.addPoint(tabPane.getWidth() - 2 * fila, lines[i] + 3);
if (i < lines.length - 2) {
carp.addPoint(tabPane.getWidth() - 2 * fila, lines[i + 1]);
carp.addPoint(0, lines[i + 1]);
} else {
carp.addPoint(tabPane.getWidth() - 2 * fila, lines[i] + rects[selectedIndex].height);
carp.addPoint(0, lines[i] + rects[selectedIndex].height);
}
carp.addPoint(0, lines[i]);
g.setColor(hazAlfa(fila));
g.fillPolygon(carp);
g.setColor(darkShadow.darker());
g.drawPolygon(carp);
}
} else {
int fila = 0;
for (int i = 0; i < lines.length - 1; i++, fila++) {
Polygon carp = new Polygon();
carp.addPoint(0, lines[i]);
carp.addPoint(tabPane.getWidth() - 2 * fila - 1, lines[i]);
carp.addPoint(tabPane.getWidth() - 2 * fila - 1, lines[i + 1] - 3);
carp.addPoint(tabPane.getWidth() - 2 * fila - 3, lines[i + 1]);
carp.addPoint(0, lines[i + 1]);
carp.addPoint(0, lines[i]);
g.setColor(hazAlfa(fila + 2));
g.fillPolygon(carp);
g.setColor(darkShadow.darker());
g.drawPolygon(carp);
}
}
}
super.paintTabArea(g, tabPlacement, selectedIndex);
}
@Override
protected void paintTabBackground(Graphics g, int tabPlacement, int tabIndex, int x, int y, int w, int h, boolean isSelected) {
Graphics2D g2D = (Graphics2D) g;
GradientPaint gradientShadow;
int xp[] = null; // Para la forma
int yp[] = null;
switch (tabPlacement) {
case LEFT:
xp = new int[]{x, x, x + w, x + w, x};
yp = new int[]{y, y + h - 3, y + h - 3, y, y};
gradientShadow = new GradientPaint(x, y, new Color(100, 100, 255), x, y + h, Color.ORANGE);
break;
case RIGHT:
xp = new int[]{x, x, x + w - 2, x + w - 2, x};
yp = new int[]{y, y + h - 3, y + h - 3, y, y};
gradientShadow = new GradientPaint(x, y, new Color(100, 100, 255), x, y + h, new Color(153, 186, 243));
break;
case BOTTOM:
xp = new int[]{x, x, x + 3, x + w - inclTab - 6, x + w - inclTab - 2, x + w - inclTab, x + w - 3, x};
yp = new int[]{y, y + h - 3, y + h, y + h, y + h - 1, y + h - 3, y, y};
gradientShadow = new GradientPaint(x, y, new Color(100, 100, 255), x, y + h, Color.BLUE);
break;
case TOP:
default:
xp = new int[]{x, x, x + 3, x + w - inclTab - 6, x + w - inclTab - 2, x + w - inclTab, x + w - inclTab, x};
yp = new int[]{y + h, y + 3, y, y, y + 1, y + 3, y + h, y + h};
gradientShadow = new GradientPaint(0, 0, Color.ORANGE, 0, y + h / 2, new Color(240, 255, 210));
break;
}
// ;
shape = new Polygon(xp, yp, xp.length);
if (isSelected) {
g2D.setColor(selectColor);
g2D.setPaint(gradientShadow);
} else {
if (tabPane.isEnabled() && tabPane.isEnabledAt(tabIndex)) {
g2D.setColor(deSelectColor);
GradientPaint gradientShadowTmp = new GradientPaint(0, 0, new Color(255, 255, 200), 0, y + h / 2, new Color(240, 255, 210));
g2D.setPaint(gradientShadowTmp);
} else {
GradientPaint gradientShadowTmp = new GradientPaint(0, 0, new Color(240, 255, 210), 0, y + 15 + h / 2, new Color(204, 204, 204));
g2D.setPaint(gradientShadowTmp);
}
}
//selectColor = new Color(255, 255, 200);
//deSelectColor = new Color(240, 255, 210);
g2D.fill(shape);
if (runCount > 1) {
g2D.setColor(hazAlfa(getRunForTab(tabPane.getTabCount(), tabIndex) - 1));
g2D.fill(shape);
}
g2D.fill(shape);
}
@Override
protected void paintText(Graphics g, int tabPlacement, Font font, FontMetrics metrics, int tabIndex, String title, Rectangle textRect, boolean isSelected) {
super.paintText(g, tabPlacement, font, metrics, tabIndex, title, textRect, isSelected);
g.setFont(font);
View v = getTextViewForTab(tabIndex);
if (v != null) {
// html
v.paint(g, textRect);
} else {
// plain text
int mnemIndex = tabPane.getDisplayedMnemonicIndexAt(tabIndex);
if (tabPane.isEnabled() && tabPane.isEnabledAt(tabIndex)) {
g.setColor(tabPane.getForegroundAt(tabIndex));
BasicGraphicsUtils.drawStringUnderlineCharAt(g, title, mnemIndex, textRect.x, textRect.y + metrics.getAscent());
} else { // tab disabled
g.setColor(Color.BLACK);
BasicGraphicsUtils.drawStringUnderlineCharAt(g, title, mnemIndex, textRect.x, textRect.y + metrics.getAscent());
g.setColor(tabPane.getBackgroundAt(tabIndex).darker());
BasicGraphicsUtils.drawStringUnderlineCharAt(g, title, mnemIndex, textRect.x - 1, textRect.y + metrics.getAscent() - 1);
}
}
}
/*protected void paintText(Graphics g, int tabPlacement, Font font, FontMetrics metrics, int tabIndex, String title, Rectangle textRect, boolean isSelected) {
g.setFont(font);
View v = getTextViewForTab(tabIndex);
if (v != null) {
// html
v.paint(g, textRect);
} else {
// plain text
int mnemIndex = tabPane.getDisplayedMnemonicIndexAt(tabIndex);
if (tabPane.isEnabled() && tabPane.isEnabledAt(tabIndex)) {
Color fg = tabPane.getForegroundAt(tabIndex);
if (isSelected && (fg instanceof UIResource)) {
Color selectedFG = UIManager.getColor("TabbedPane.selectedForeground");
if (selectedFG != null) {
fg = selectedFG;
}
}
g.setColor(fg);
SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, title, mnemIndex, textRect.x, textRect.y + metrics.getAscent());
} else { // tab disabled
//PAY ATTENTION TO HERE
g.setColor(tabPane.getBackgroundAt(tabIndex).brighter());
SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, title, mnemIndex, textRect.x, textRect.y + metrics.getAscent());
g.setColor(tabPane.getBackgroundAt(tabIndex).darker());
SwingUtilities2.drawStringUnderlineCharAt(tabPane, g, title, mnemIndex,
textRect.x - 1, textRect.y + metrics.getAscent() - 1);
}
}
}*/
@Override
protected int calculateTabWidth(int tabPlacement, int tabIndex, FontMetrics metrics) {
return 20 + inclTab + super.calculateTabWidth(tabPlacement, tabIndex, metrics);
}
@Override
protected int calculateTabHeight(int tabPlacement, int tabIndex, int fontHeight) {
if (tabPlacement == LEFT || tabPlacement == RIGHT) {
return super.calculateTabHeight(tabPlacement, tabIndex, fontHeight);
} else {
return anchoFocoH + super.calculateTabHeight(tabPlacement, tabIndex, fontHeight);
}
}
@Override
protected void paintTabBorder(Graphics g, int tabPlacement, int tabIndex, int x, int y, int w, int h, boolean isSelected) {
}
@Override
protected void paintFocusIndicator(Graphics g, int tabPlacement, Rectangle[] rects, int tabIndex, Rectangle iconRect, Rectangle textRect, boolean isSelected) {
if (tabPane.hasFocus() && isSelected) {
g.setColor(UIManager.getColor("ScrollBar.thumbShadow"));
g.drawPolygon(shape);
}
}
protected Color hazAlfa(int fila) {
int alfa = 0;
if (fila >= 0) {
alfa = 50 + (fila > 7 ? 70 : 10 * fila);
}
return new Color(0, 0, 0, alfa);
}
}
JTabbedPane customize tab look
Correct way would be to implement Custom Look & Feel only. But if you want to play with XxxTabbedPaneUI, then maybe this post can help you with that.
for Nimbus will be better to check aephyr code depot
How to change the colour of the jTabbed Pane header
For more complex look-and-feel changes you should take a look into writing your own look-and-feel like glad3r already mentioned.
This post also is a great example.
For some basic things you might simply want to change some UIManager values, see example below and play a bit around with those values.
import java.awt.BorderLayout;
import java.awt.Color;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;
import javax.swing.UIManager;
import javax.swing.border.LineBorder;
import javax.swing.plaf.BorderUIResource;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.InsetsUIResource;
@SuppressWarnings("serial")
public class TabbedPaneTest extends JTabbedPane {
public static void main(String[] args) {
JFrame frame = new JFrame("TabbedPane");
frame.setSize(800, 600);
frame.setLocationRelativeTo(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.getContentPane().setBackground(Color.RED);
frame.getContentPane().add(new TabbedPaneTest());
frame.setVisible(true);
}
public TabbedPaneTest() {
UIManager.put("TabbedPane.contentBorderInsets", new InsetsUIResource(1, 0, 0, 0));
UIManager.put("TabbedPane.contentAreaColor", new ColorUIResource(Color.GREEN));
UIManager.put("TabbedPane.focus", new ColorUIResource(Color.ORANGE));
UIManager.put("TabbedPane.selected", new ColorUIResource(Color.YELLOW));
UIManager.put("TabbedPane.darkShadow", new ColorUIResource(Color.DARK_GRAY));
UIManager.put("TabbedPane.borderHightlightColor", new ColorUIResource(Color.LIGHT_GRAY));
UIManager.put("TabbedPane.light", new ColorUIResource(Color.WHITE));
UIManager.put("TabbedPane.tabAreaBackground", new ColorUIResource(Color.CYAN));
UIManager.put("ToolTip.background", Color.WHITE);
UIManager.put("ToolTip.border", new BorderUIResource(new LineBorder(Color.BLACK)));
this.updateUI();
this.setBackground(Color.BLUE);
JPanel testPanel = new JPanel();
testPanel.setLayout(new BorderLayout());
testPanel.add(new JLabel("Hello World"), BorderLayout.NORTH);
testPanel.add(new JTextArea("Looks nice out there :)"), BorderLayout.CENTER);
JPanel testPanel2 = new JPanel();
testPanel2.setLayout(new BorderLayout());
testPanel2.add(new JLabel("Good Bye World"), BorderLayout.NORTH);
testPanel2.add(new JTextArea("AAAAAnnnnnd... I'm gone"), BorderLayout.CENTER);
this.addTab("Hello World", testPanel);
this.addTab("BB World", testPanel2);
}
}
Colorize a tab in a JTabbedPane using java swing
most of method for
JTabbedPaneis protected in the API, and not accesible from Swing methodshave to look for
Custom XxxTabbedPaneUI, override these methods, and could be accesible from outsidecorrect way would be to implement Custom Look & Feel only, part of them override
JTabbedPaneexample for Custom XxxTabbedPaneUI
Change JFrame display when JTabbedPane tab is selected
I want to display the graphics on the panel next to the tabbedPane.
Read the section from the Swing tutorial on How to Write a ChangeListener.
You will be notified when a tab has been clicked. You then get the selected tab and add the panel to the frame.
So basically your if (tabbedPane.getSelectedIndex() == 0) logic would be moved to the ChangeListener.
Or instead of having a bunch of "if statement" you could have a Map of Integer/JPanel values. Then you just get the index and get the panel from the Map.
Once you add the panel to the frame you then need to revalidate() and repaint() the frame.
Edit:
Actually the above suggestion is not complete. You can't just keep adding panels to the frame. The CENTER area of the BorderLayout should only contain a single component, otherwise you can get painting problems.
This can be demonstrated by clicking on the unselected tab, and then resize the frame. The original panel will be displayed.
You need to do one of the following:
Use a
CardLayout(read the tutorial if you haven't used layout before) on a penel in the CENTER of the BordreLayout. So in this case the panel using the CardLayout is the only component in the CENTER and then it manages the panel that is displayed in the CardLayout. So yourChangeListenerwould need to identify the card to be displayed. You could set the card identifier to be the text of the selected tab. SoRemove the current panel BEFORE adding the new panel. In this case there is only a single panel in the CENTER so painting is as expected.
Tabs Rendering Order in Custom JTabbedPane
Well, I finally found the solution myself by overriding paintTabArea method from BasicTabbedPaneUI class.
The default code is:
protected void paintTabArea(Graphics g, int tabPlacement, int selectedIndex) {
int tabCount = tabPane.getTabCount();
Rectangle iconRect = new Rectangle(),
textRect = new Rectangle();
Rectangle clipRect = g.getClipBounds();
for (int i = runCount - 1; i >= 0; i--) {
int start = tabRuns[i];
int next = tabRuns[(i == runCount - 1)? 0 : i + 1];
int end = (next != 0? next - 1: tabCount - 1);
for (int j = start; j <= end; j++) {
if (j != selectedIndex && rects[j].intersects(clipRect)) {
paintTab(g, tabPlacement, rects, j, iconRect, textRect);
}
}
}
if (selectedIndex >= 0 && rects[selectedIndex].intersects(clipRect)) {
paintTab(g, tabPlacement, rects, selectedIndex, iconRect, textRect);
}
}
At the second for statement, you see the condition: (int j = start; j <= end; j++)
In order to switch tabs rendering order, you just have to change that condition to:
(int j = end; j >= start; j--)
Change tab look for JTabbedpane
Is it possible to have the tab text change colour when the mouse is
hovering over it?
As stated in this answer you can set a custom component for rendering the tab title, through JTabbedPane.setTabComponentAt(int index, Component component) method. So you can do something like this:
final JTabbedPane tabbedPane = new JTabbedPane();
MouseListener mouseListener = new MouseAdapter() {
Color defaultColor;
@Override
public void mouseEntered(MouseEvent e) {
JLabel label = (JLabel)e.getSource();
defaultColor = label.getForeground();
label.setForeground(Color.BLUE);
}
@Override
public void mouseExited(MouseEvent e) {
JLabel label = (JLabel)e.getSource();
label.setForeground(defaultColor);
}
@Override
public void mouseClicked(MouseEvent e) {
JLabel label = (JLabel)e.getSource();
Point point = SwingUtilities.convertPoint(label, e.getPoint(), tabbedPane);
int selectedTab = tabbedPane.getUI().tabForCoordinate(tabbedPane, point.x, point.y);
switch(e.getButton()){
case MouseEvent.BUTTON2: tabbedPane.removeTabAt(selectedTab); break;
default: tabbedPane.setSelectedIndex(selectedTab);
}
}
};
JLabel tab1 = new JLabel("Tab1");
tab1.addMouseListener(mouseListener);
tabbedPane.addTab(null, new JPanel());
tabbedPane.setTabComponentAt(0, tab1);
How can I remove OR change colour of the border surrounding these
tabs?
It's up to the Look and Feel decide the border color in this case. You should look into the L&F default properties and see if it's allowed change this color. For instance you could execute the following code to see L&F default properties (of course after setting the L&F):
for(Object key : UIManager.getLookAndFeelDefaults().keySet()){
System.out.println(key + " = " + UIManager.get(key));
}
Change colour of disabled JTabbedPane
I found the solution to this problem. I used the CustomTabbedPaneUI class posted by mKorbel at this link: How can I change the shape of a JTabbedPane tab? I then modified the paintTabBackground method so that the background colour of a disabled tabbed pane is white.
Related Topics
How to Put All Required Jar Files in a Library Folder Inside the Final Jar File with Maven
Changing Names of Parameterized Tests
How to Daemonize a Java Program
Rounding Bigdecimal to *Always* Have Two Decimal Places
Is There a 'Block Until Condition Becomes True' Function in Java
How to Obtain Jni Interface Pointer (Jnienv *) for Asynchronous Calls
How to Serialize Joda Datetime with Jackson JSON Processor
Working with a List of Lists in Java
Reversing a String with Recursion in Java
Environment Variable to Control Java.Io.Tmpdir
Using Powermockito.Whennew() Is Not Getting Mocked and Original Method Is Called
Read File from Resources Folder in Spring Boot
How to Write a Basic Swap Function in Java
Check If a String Contains a Special Character