some UI Updates for Picking a custom Background color, and having Multiple Monitor Fullscreen!

src/main/java/io/swtc/SwingIFrame.java

@@ -2,7 +2,7 @@ package io.swtc;
 
 import com.github.sarxos.webcam.Webcam;
 import io.swtc.proccessing.ui.IconSetter;
-import io.swtc.proccessing.ui.iframe.*; // Your custom frames
+import io.swtc.proccessing.ui.iframe.*;
 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.ActionEvent;
@@ -10,6 +10,7 @@ import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 
 public class SwingIFrame {
     private final JFrame mainFrame;
@@ -109,7 +110,14 @@ public class SwingIFrame {
         popupMenu.removeAll(); // clean slate
 
         JCheckBoxMenuItem fullscreenItem = new JCheckBoxMenuItem("Fullscreen");
+        JCheckBoxMenuItem mmfullscreenItem = new JCheckBoxMenuItem("Multi Monitor Fullscreen");
+        JCheckBoxMenuItem backgroundcolor = new JCheckBoxMenuItem("Calmer Background");
+        JMenuItem colorpicker = new JMenuItem("Set background color");
+
         fullscreenItem.addActionListener(e -> toggleFullscreen());
+        mmfullscreenItem.addActionListener(e -> toggleMMFullscreen());
+        backgroundcolor.addActionListener(e -> toggleBackground());
+        colorpicker.addActionListener(e -> chooseBgColor());
 
         popupMenu.addPopupMenuListener(new javax.swing.event.PopupMenuListener() {
             @Override
@@ -121,6 +129,22 @@ public class SwingIFrame {
         });
 
         popupMenu.add(fullscreenItem);
+        popupMenu.add(mmfullscreenItem);
+        popupMenu.add(backgroundcolor);
+        popupMenu.add(colorpicker);
+    }
+
+    private void chooseBgColor() {
+        Color selected = JColorChooser.showDialog(
+                mainFrame,
+                "Select Background Color",
+                desktopPane.getBackground()
+        );
+
+        if (!Objects.isNull(selected)) {
+            desktopPane.setBackground(selected);
+            desktopPane.repaint();
+        }
     }
 
     private void setupBlackBg() {
@@ -137,6 +161,7 @@ public class SwingIFrame {
 
     private void setupFullscreenToggle() {
         JRootPane root = mainFrame.getRootPane();
+        // One Monitor FS
         root.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
                 .put(KeyStroke.getKeyStroke("F11"), "toggleFullscreen");
         root.getActionMap().put("toggleFullscreen", new AbstractAction() {
@@ -145,6 +170,16 @@ public class SwingIFrame {
                 toggleFullscreen();
             }
         });
+
+        // Multi Monitor FS
+        root.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW)
+                .put(KeyStroke.getKeyStroke("F12"), "toggleMMFullscreen");
+        root.getActionMap().put("toggleMMFullscreen", new AbstractAction() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                toggleMMFullscreen();
+            }
+        });
     }
 
     private void toggleBackground() {
@@ -153,6 +188,33 @@ public class SwingIFrame {
         desktopPane.repaint();
     }
 
+    private void toggleMMFullscreen() {
+        if (!fullscreen) {
+            windowedBounds = mainFrame.getBounds();
+
+            Rectangle virtualBounds = new Rectangle();
+            GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
+            GraphicsDevice[] gs = ge.getScreenDevices();
+
+            for (GraphicsDevice gd : gs) {
+                GraphicsConfiguration[] gc = gd.getConfigurations();
+                for (GraphicsConfiguration configuration : gc) {
+                    virtualBounds = virtualBounds.union(configuration.getBounds());
+                }
+            }
+
+            mainFrame.dispose();
+            mainFrame.setUndecorated(true);
+
+            mainFrame.setBounds(virtualBounds);
+            mainFrame.setVisible(true);
+
+            fullscreen = true;
+        } else {
+            toggleFullscreen();
+        }
+    }
+
     /** Toggle fullscreen mode */
     private void toggleFullscreen() {
         if (!fullscreen) {