From 424dcb0d7835d3be74134bfa7c4152e492c6f9ce Mon Sep 17 00:00:00 2001
From: Niki Roo <niki@nikiroo.be>
Date: Thu, 16 May 2019 21:54:07 +0200
Subject: [PATCH] ConfigItem: add colour field

---
 src/be/nikiroo/utils/ui/ConfigItem.java | 82 ++++++++++++++++++++++++-
 1 file changed, 81 insertions(+), 1 deletion(-)

diff --git a/src/be/nikiroo/utils/ui/ConfigItem.java b/src/be/nikiroo/utils/ui/ConfigItem.java
index 9ae58bad..6afbb945 100644
--- a/src/be/nikiroo/utils/ui/ConfigItem.java
+++ b/src/be/nikiroo/utils/ui/ConfigItem.java
@@ -1,9 +1,18 @@
 package be.nikiroo.utils.ui;
 
 import java.awt.BorderLayout;
+import java.awt.Color;
 import java.awt.Dimension;
-
+import java.awt.Graphics2D;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.awt.image.BufferedImage;
+
+import javax.swing.Icon;
+import javax.swing.ImageIcon;
+import javax.swing.JButton;
 import javax.swing.JCheckBox;
+import javax.swing.JColorChooser;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
@@ -69,6 +78,45 @@ public class ConfigItem<E extends Enum<E>> extends JPanel {
 
 			field.setText(info.getName());
 			this.add(field, BorderLayout.CENTER);
+		} else if (info.getFormat() == Format.COLOR) {
+			final JTextField field = new JTextField();
+			field.setToolTipText(info.getDescription());
+			field.setText(info.getString());
+
+			info.addReloadedListener(new Runnable() {
+				@Override
+				public void run() {
+					field.setText(info.getString());
+				}
+			});
+			info.addSaveListener(new Runnable() {
+				@Override
+				public void run() {
+					info.setString(field.getText());
+				}
+			});
+
+			this.add(label(info.getName()), BorderLayout.WEST);
+			JPanel pane = new JPanel(new BorderLayout());
+
+			final JButton colorWheel = new JButton();
+			colorWheel.setIcon(getIcon(17, info.getColor()));
+			colorWheel.addActionListener(new ActionListener() {
+				@Override
+				public void actionPerformed(ActionEvent e) {
+					Color initialColor = new Color(info.getColor(), true);
+					Color newColor = JColorChooser.showDialog(ConfigItem.this,
+							info.getName(), initialColor);
+					if (newColor != null) {
+						info.setColor(newColor.getRGB());
+						field.setText(info.getString());
+						colorWheel.setIcon(getIcon(17, info.getColor()));
+					}
+				}
+			});
+			pane.add(colorWheel, BorderLayout.WEST);
+			pane.add(field, BorderLayout.CENTER);
+			this.add(pane, BorderLayout.CENTER);
 		} else {
 			final JTextField field = new JTextField();
 			field.setToolTipText(info.getDescription());
@@ -123,4 +171,36 @@ public class ConfigItem<E extends Enum<E>> extends JPanel {
 
 		return label;
 	}
+
+	/**
+	 * Return an {@link Icon} to use as a colour badge for the colour field
+	 * controls.
+	 * 
+	 * @param size
+	 *            the size of the badge
+	 * @param color
+	 *            the colour of the badge
+	 * 
+	 * @return the badge
+	 */
+	private Icon getIcon(int size, int color) {
+		Color c = new Color(color, true);
+		int avg = (c.getRed() + c.getGreen() + c.getBlue()) / 3;
+		Color border = (avg >= 128 ? Color.BLACK : Color.WHITE);
+
+		BufferedImage img = new BufferedImage(size, size,
+				BufferedImage.TYPE_4BYTE_ABGR);
+
+		Graphics2D g = img.createGraphics();
+		try {
+			g.setColor(c);
+			g.fillRect(0, 0, img.getWidth(), img.getHeight());
+			g.setColor(border);
+			g.drawRect(0, 0, img.getWidth() - 1, img.getHeight() - 1);
+		} finally {
+			g.dispose();
+		}
+
+		return new ImageIcon(img);
+	}
 }
-- 
2.27.0