Kourend Library Plugin slight design tweak

- Spaced out the item panels vertically and slightly horizontally.
- Added a new header with the plugin's name, as it can be hard to know
what this plugin does/is.
- Restyled the reset button, it previously was a "Reset" text button, I
switched it to an icon with a darker version that activates
when clicked.
- Added the icon images to the resource folder.
- Added new method to SwingUtil that returns a darker version of an
image
- Used the image darkening method to give the refresh button a click
feedback effect

runelite-client/src/main/java/net/runelite/client/plugins/kourendlibrary/BookPanel.java

@@ -28,6 +28,7 @@ import java.awt.Color;
 import javax.swing.GroupLayout;
 import javax.swing.JLabel;
 import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
 import net.runelite.client.ui.FontManager;
 
 class BookPanel extends JPanel
@@ -36,6 +37,9 @@ class BookPanel extends JPanel
 
 	BookPanel(Book b)
 	{
+		setBorder(new EmptyBorder(3, 3, 3, 3));
+		setOpaque(false);
+
 		GroupLayout layout = new GroupLayout(this);
 		this.setLayout(layout);
 
@@ -74,4 +78,4 @@ class BookPanel extends JPanel
 	{
 		location.setForeground(target ? Color.GREEN : Color.WHITE);
 	}
-}
+}

runelite-client/src/main/java/net/runelite/client/plugins/kourendlibrary/KourendLibraryPanel.java

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018 Abex
+ * Copyright (c) 2018 Psikoi
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -25,35 +26,71 @@
 package net.runelite.client.plugins.kourendlibrary;
 
 import com.google.inject.Inject;
+import java.awt.BorderLayout;
+import java.awt.Color;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+import java.awt.image.BufferedImage;
+import java.io.IOException;
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import javax.imageio.ImageIO;
 import javax.inject.Singleton;
+import javax.swing.BorderFactory;
 import javax.swing.GroupLayout;
-import javax.swing.JButton;
+import javax.swing.ImageIcon;
+import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.SwingUtilities;
+import javax.swing.border.CompoundBorder;
+import javax.swing.border.EmptyBorder;
+import net.runelite.client.ui.ColorScheme;
 import net.runelite.client.ui.PluginPanel;
+import net.runelite.client.util.SwingUtil;
 
 @Singleton
 public class KourendLibraryPanel extends PluginPanel
 {
+	private static final ImageIcon RESET_ICON;
+	private static final ImageIcon RESET_CLICK_ICON;
+
 	@Inject
 	private Library library;
 
 	private final HashMap<Book, BookPanel> bookPanels = new HashMap<>();
 
+	static
+	{
+		try
+		{
+			synchronized (ImageIO.class)
+			{
+				BufferedImage resetIcon = ImageIO.read(KourendLibraryPanel.class.getResourceAsStream("reset.png"));
+				RESET_ICON = new ImageIcon(resetIcon);
+				RESET_CLICK_ICON = new ImageIcon(SwingUtil.grayscaleOffset(resetIcon, -100));
+			}
+		}
+		catch (IOException e)
+		{
+			throw new RuntimeException(e);
+		}
+	}
+
 	void init()
 	{
 		GroupLayout layout = new GroupLayout(this);
 		setLayout(layout);
+		setBorder(new EmptyBorder(10, 10, 10, 10));
+		setBackground(ColorScheme.DARK_GRAY_COLOR);
 
 		JPanel books = new JPanel(new GridBagLayout());
+		books.setOpaque(false);
 		GridBagConstraints c = new GridBagConstraints();
 		c.fill = GridBagConstraints.HORIZONTAL;
 		c.weightx = 1;
@@ -70,21 +107,45 @@ public class KourendLibraryPanel extends PluginPanel
 				c.gridy++;
 			});
 
-		JButton reset = new JButton("Reset");
-		reset.addActionListener(e ->
+		JLabel reset = new JLabel(RESET_ICON);
+		reset.addMouseListener(new MouseAdapter()
 		{
-			library.reset();
-			update();
+			@Override
+			public void mousePressed(MouseEvent mouseEvent)
+			{
+				reset.setIcon(RESET_CLICK_ICON);
+				library.reset();
+				update();
+			}
+
+			@Override
+			public void mouseReleased(MouseEvent mouseEvent)
+			{
+				reset.setIcon(RESET_ICON);
+			}
 		});
 
+		JPanel header = new JPanel();
+		header.setOpaque(false);
+		header.setLayout(new BorderLayout());
+		header.setBorder(new CompoundBorder(
+			BorderFactory.createMatteBorder(0, 0, 1, 0, new Color(58, 58, 58)),
+			BorderFactory.createEmptyBorder(0, 0, 10, 0)));
+
+		JLabel pluginName = new JLabel("Kourend Library Plugin");
+		pluginName.setForeground(Color.WHITE);
+
+		header.add(reset, BorderLayout.EAST);
+		header.add(pluginName, BorderLayout.CENTER);
+
 		layout.setHorizontalGroup(layout.createParallelGroup()
 			.addComponent(books)
-			.addComponent(reset)
+			.addComponent(header)
 		);
 		layout.setVerticalGroup(layout.createSequentialGroup()
+			.addComponent(header)
+			.addGap(10)
 			.addComponent(books)
-			.addGap(4)
-			.addComponent(reset)
 		);
 
 		update();
@@ -134,4 +195,4 @@ public class KourendLibraryPanel extends PluginPanel
 			}
 		});
 	}
-}
+}

runelite-client/src/main/java/net/runelite/client/util/SwingUtil.java

@@ -32,6 +32,7 @@ import java.awt.Frame;
 import java.awt.Graphics2D;
 import java.awt.Image;
 import java.awt.Rectangle;
+import java.awt.RenderingHints;
 import java.awt.SystemTray;
 import java.awt.Toolkit;
 import java.awt.TrayIcon;
@@ -41,6 +42,8 @@ import java.awt.event.MouseEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.awt.image.BufferedImage;
+import java.awt.image.LookupOp;
+import java.awt.image.LookupTable;
 import java.util.Enumeration;
 import java.util.concurrent.Callable;
 import java.util.function.BiConsumer;
@@ -95,6 +98,40 @@ public class SwingUtil
 		System.setProperty("sun.awt.noerasebackground", "true");
 	}
 
+	/**
+	 * Offsets an image in the grayscale (darkens/brightens) by an offset
+	 */
+	public static BufferedImage grayscaleOffset(BufferedImage image, int offset)
+	{
+		int numComponents = image.getColorModel().getNumComponents();
+		int index = numComponents - 1;
+
+		LookupTable lookup = new LookupTable(0, numComponents)
+		{
+			@Override
+			public int[] lookupPixel(int[] src, int[] dest)
+			{
+				if (dest[index] != 0)
+				{
+					dest[index] = dest[index] + offset;
+					if (dest[index] < 0)
+					{
+						dest[index] = 0;
+					}
+					else if (dest[index] > 255)
+					{
+						dest[index] = 255;
+					}
+				}
+
+				return dest;
+			}
+		};
+
+		LookupOp op = new LookupOp(lookup, new RenderingHints(null));
+		return op.filter(image, null);
+	}
+
 	/**
 	 * Converts a given color to it's hexidecimal equivalent.
 	 */