RibbonCategoryLabel.java

package edu.stanford.hci.r3.util.components.ribbons;

import static edu.stanford.hci.r3.util.components.ribbons.RibbonConstants.CATEGORY_LABEL_FONT;
import static edu.stanford.hci.r3.util.components.ribbons.RibbonConstants.NOT_SELECTED_COLOR;
import static edu.stanford.hci.r3.util.components.ribbons.RibbonConstants.SELECTED_COLOR;

import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JLabel;
import javax.swing.JPanel;

import edu.stanford.hci.r3.util.graphics.GraphicsUtils;

public class RibbonCategoryLabel extends JPanel {

        private boolean isSelected;

        private JLabel labelText;

        private CardLayout layout;

        private String name;

        private RibbonToolbar parentToolbar;

        private JPanel toolPanel;

        public RibbonCategoryLabel(String categoryName, RibbonToolbar toolbar) {
                parentToolbar = toolbar;
                name = categoryName;
                labelText = new JLabel(name);
                labelText.setFont(CATEGORY_LABEL_FONT);
                add(labelText);
                addMouseListener(getClickListener());
                setOpaque(false);
        }

        private MouseAdapter getClickListener() {
                return new MouseAdapter() {
                        public void mousePressed(MouseEvent e) {
                                System.out.println("Clicked on Category Label: " + name);
                                if (layout != null) {
                                        layout.show(toolPanel, name);
                                        parentToolbar.setSelectedLabel(RibbonCategoryLabel.this);
                                }
                        }
                };
        }

        protected void paintComponent(Graphics g) {
                super.paintComponent(g);
                final Graphics2D g2d = (Graphics2D) g;
                g2d.setRenderingHints(GraphicsUtils.getBestRenderingHints());

                // dimensions
                final int w = getWidth();
                final int h = getHeight();

                if (isSelected) {
                        g2d.setColor(SELECTED_COLOR);
                        g2d.fillRoundRect(0, 0, w, h + 14, 14, 14);
                } else {
                        g2d.setColor(NOT_SELECTED_COLOR);
                        g2d.fillRoundRect(0, 0, w, h + 14, 14, 14);

                }
        }

        public void setCardLayoutInfo(CardLayout cardLayout, JPanel tools) {
                layout = cardLayout;
                toolPanel = tools;
        }

        public void setSelected(boolean selected) {
                isSelected = selected;

                if (isSelected) {
                        labelText.setForeground(Color.BLACK);
                } else {
                        labelText.setForeground(Color.GRAY);
                }
                repaint();
        }

}

---