Add ability to lock client to screen

runelite-client/src/main/java/net/runelite/client/config/RuneLiteConfig.java

@@ -156,6 +156,17 @@ public interface RuneLiteConfig extends Config
 		return 4;
 	}
 
+	@ConfigItem(
+		keyName = "containInScreen",
+		name = "Contain in screen",
+		description = "Makes the client stay contained in the screen when attempted to move out of it.<br>Note: Only works if custom chrome is enabled.",
+		position = 12
+	)
+	default boolean containInScreen()
+	{
+		return false;
+	}
+
 	@ConfigItem(
 		keyName = "rememberScreenBounds",
 		name = "Remember client position",

runelite-client/src/main/java/net/runelite/client/ui/ClientUI.java

@@ -127,7 +127,7 @@ public class ClientUI
 	private final EventBus eventBus;
 	private final KeyManager keyManager;
 	private Applet client;
-	private JFrame frame;
+	private ContainableFrame frame;
 	private JPanel navContainer;
 	private PluginPanel pluginPanel;
 	private ClientPluginToolbar pluginToolbar;
@@ -181,6 +181,12 @@ public class ClientUI
 				frame.setResizable(!config.lockWindowSize());
 			}
 
+			if (event.getKey().equals("containInScreen") ||
+				event.getKey().equals("uiEnableCustomChrome"))
+			{
+				frame.setContainedInScreen(config.containInScreen() && config.enableCustomChrome());
+			}
+
 			if (event.getKey().equals("rememberScreenBounds") && event.getNewValue().equals("false"))
 			{
 				configManager.unsetConfiguration(CONFIG_GROUP, CONFIG_CLIENT_MAXIMIZED);
@@ -336,7 +342,7 @@ public class ClientUI
 			SwingUtil.setFont(FontManager.getRunescapeFont());
 
 			// Create main window
-			frame = new JFrame();
+			frame = new ContainableFrame();
 
 			// Try to enable fullscreen on OSX
 			OSXUtil.tryEnableFullscreen(frame);

runelite-client/src/main/java/net/runelite/client/ui/ContainableFrame.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright (c) 2018, Woox <https://github.com/wooxsolo>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.client.ui;
+
+import java.awt.Rectangle;
+import javax.swing.JFrame;
+import lombok.Getter;
+
+public class ContainableFrame extends JFrame
+{
+	@Getter
+	private boolean containedInScreen;
+
+	public void setContainedInScreen(boolean value)
+	{
+		this.containedInScreen = value;
+		if (value)
+		{
+			// Reposition the frame if it is intersecting with the bounds
+			this.setLocation(this.getX(), this.getY());
+			this.setBounds(this.getX(), this.getY(), this.getWidth(), this.getHeight());
+		}
+	}
+
+	@Override
+	public void setLocation(int x, int y)
+	{
+		if (containedInScreen)
+		{
+			Rectangle bounds = this.getGraphicsConfiguration().getBounds();
+			x = Math.max(x, (int)bounds.getX());
+			x = Math.min(x, (int)(bounds.getX() + bounds.getWidth() - this.getWidth()));
+			y = Math.max(y, (int)bounds.getY());
+			y = Math.min(y, (int)(bounds.getY() + bounds.getHeight() - this.getHeight()));
+		}
+		super.setLocation(x, y);
+	}
+
+	@Override
+	public void setBounds(int x, int y, int width, int height)
+	{
+		if (containedInScreen)
+		{
+			Rectangle bounds = this.getGraphicsConfiguration().getBounds();
+			width = Math.min(width, width - (int)bounds.getX() + x);
+			x = Math.max(x, (int)bounds.getX());
+			height = Math.min(height, height - (int)bounds.getY() + y);
+			y = Math.max(y, (int)bounds.getY());
+			width = Math.min(width, (int)(bounds.getX() + bounds.getWidth()) - x);
+			height = Math.min(height, (int)(bounds.getY() + bounds.getHeight()) - y);
+		}
+		super.setBounds(x, y, width, height);
+	}
+}