120 lines
2.9 KiB
Java
120 lines
2.9 KiB
Java
package dev.kske.chess.ui;
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import java.awt.*;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import javax.swing.*;
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import javax.swing.plaf.basic.BasicButtonUI;
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/**
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* Renders the title and the closing button of a {@link JTabbedPane}.<br>
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* <br>
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* Project: <strong>Chess</strong><br>
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* File: <strong>GameTabComponent.java</strong><br>
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* Created: <strong>11 Dec 2019</strong><br>
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*
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* @author Kai S. K. Engelbart
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*/
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public class GameTabComponent extends JPanel {
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private final JTabbedPane tabbedPane;
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private static final long serialVersionUID = 9022979950018125935L;
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/**
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* Creates an instance of {@link GameTabComponent}.
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*
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* @param tabbedPane the tabbed pane which contains this
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* {@link GameTabComponent}
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*/
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public GameTabComponent(JTabbedPane tabbedPane) {
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super(new FlowLayout(FlowLayout.LEFT, 0, 0));
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if (tabbedPane == null)
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throw new NullPointerException("TabbedPane is null");
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this.tabbedPane = tabbedPane;
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// Create title JLabel
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JLabel label = new JLabel() {
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private static final long serialVersionUID = 7902391411509551586L;
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@Override
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public String getText() {
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int i = tabbedPane.indexOfTabComponent(GameTabComponent.this);
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return i != -1 ? tabbedPane.getTitleAt(i) : "";
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}
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};
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label.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 5));
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add(label);
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// Create close JButton
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add(new TabButton());
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setBorder(BorderFactory.createEmptyBorder(2, 0, 0, 0));
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}
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private class TabButton extends JButton {
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private static final long serialVersionUID = -2757857832337636731L;
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public TabButton() {
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final int size = 17;
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setPreferredSize(new Dimension(size, size));
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setToolTipText("Close this tab");
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setUI(new BasicButtonUI());
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setContentAreaFilled(false);
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setFocusable(false);
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setBorder(BorderFactory.createEtchedBorder());
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setBorderPainted(false);
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addMouseListener(new MouseAdapter() {
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@Override
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public void mouseEntered(MouseEvent evt) {
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setBorderPainted(true);
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}
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@Override
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public void mouseExited(MouseEvent evt) {
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setBorderPainted(false);
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}
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});
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setRolloverEnabled(true);
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addActionListener(evt -> {
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int i = tabbedPane.indexOfTabComponent(GameTabComponent.this);
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if (i != -1)
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tabbedPane.remove(i);
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});
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}
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@Override
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public void updateUI() {}
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@Override
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public void paintComponent(Graphics g) {
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super.paintComponent(g);
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Graphics2D g2 = (Graphics2D) g.create();
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// shift the image for pressed buttons
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if (getModel().isPressed())
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g2.translate(1, 1);
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g2.setStroke(new BasicStroke(2));
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g2.setColor(Color.BLACK);
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if (getModel().isRollover())
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g2.setColor(Color.MAGENTA);
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final int delta = 6;
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g2.drawLine(
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delta,
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delta,
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getWidth() - delta - 1,
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getHeight() - delta - 1
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);
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g2.drawLine(
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getWidth() - delta - 1,
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delta,
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delta,
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getHeight() - delta - 1
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);
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g2.dispose();
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}
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}
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}
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