version: 1.6.0

Seems that it still works without it (at least on macOS 11.2.1)

Pixel Picker.xcodeproj/project.pbxproj

@@ -565,7 +565,7 @@
 				CODE_SIGN_IDENTITY = "";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = "";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -575,7 +575,7 @@
 				INFOPLIST_FILE = "Pixel Picker/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.12;
-				MARKETING_VERSION = 1.5.0;
+				MARKETING_VERSION = 1.6.0;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.acheronfail.pixel-picker";
 				PRODUCT_MODULE_NAME = PixelPicker;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -593,7 +593,7 @@
 				CODE_SIGN_IDENTITY = "";
 				CODE_SIGN_STYLE = Automatic;
 				COMBINE_HIDPI_IMAGES = YES;
-				CURRENT_PROJECT_VERSION = 19;
+				CURRENT_PROJECT_VERSION = 20;
 				DEVELOPMENT_TEAM = "";
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
@@ -603,7 +603,7 @@
 				INFOPLIST_FILE = "Pixel Picker/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.12;
-				MARKETING_VERSION = 1.5.0;
+				MARKETING_VERSION = 1.6.0;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.acheronfail.pixel-picker";
 				PRODUCT_MODULE_NAME = PixelPicker;
 				PRODUCT_NAME = "$(TARGET_NAME)";

Pixel Picker/AppDelegate+Menu.swift

@@ -168,11 +168,14 @@ extension AppDelegate: NSMenuDelegate {
     @objc private func setColorSpace(_ sender: NSMenuItem) {
         PPState.shared.colorSpace = sender.representedObject as? String
     }
+    
+    static let MIN_MAGNIFICATION = 4
+    static let MAX_MAGNIFICATION = 24
 
     // A menu which allows the magnification level of the picker to be adjusted.
     private func buildMagnificationMenu() {
         let submenu = NSMenu()
-        for i in stride(from: 4, through: 24, by: 2) {
+        for i in stride(from: AppDelegate.MIN_MAGNIFICATION, through: AppDelegate.MAX_MAGNIFICATION, by: 2) {
             let item = submenu.addItem(withTitle: "\(i)x", action: #selector(selectMagnification(_:)), keyEquivalent: "")
             item.representedObject = i
             item.state = PPState.shared.magnificationLevel == i ? .on : .off

Pixel Picker/OverlayPanel/PPOverlayController.swift

@@ -114,22 +114,33 @@ class PPOverlayController: NSWindowController {
         case kVK_RightArrow:
             PPState.shared.chosenFormat = PPState.shared.chosenFormat.next()
             updateInfoPanel(lastHighlightedColor, lastHighlightedColor.bestContrastingColor())
+        // Move up
         case kVK_ANSI_K:
             moveByPixel(dx: 0.0, dy: 1.0)
-            // Move up
             break
+        // Move down
         case kVK_ANSI_J:
             moveByPixel(dx: 0.0, dy: -1.0)
-            // Move down
             break
+        // Move left
         case kVK_ANSI_H:
             moveByPixel(dx: -1.0, dy: 0.0)
-            // Move left
             break
+        // Move right
         case kVK_ANSI_L:
             moveByPixel(dx: 1.0, dy: 0.0)
-            // Move right
             break
+        // Adjust magnification with `+` or `-` and `[` or `]`
+        case kVK_ANSI_Minus:
+            fallthrough
+        case kVK_ANSI_LeftBracket:
+            PPState.shared.changeMagnification(-2)
+            moveByPixel(dx: 0, dy: 0)
+        case kVK_ANSI_Equal:
+            fallthrough
+        case kVK_ANSI_RightBracket:
+            PPState.shared.changeMagnification(2)
+            moveByPixel(dx: 0, dy: 0)
         default:
             break
         }

Pixel Picker/PPMenuShortcutView.m

@@ -75,11 +75,6 @@ CGFloat cancelBoundary = 15;
     
     NSWindow *carbonWindow = [self window];
     if (carbonWindow != nil) {
-        if (![carbonWindow.className isEqualToString:@"NSCarbonMenuWindow"]) {
-            NSLog(@"PPMenuShortcutView is designed to work with NSCarbonMenuWindow.");
-            return;
-        }
-
         EventTargetRef target = GetApplicationEventTarget();
         if (!target) {
             NSLog(@"GetEventDispatcherTarget() failed.");

Pixel Picker/PPState.swift

@@ -79,6 +79,13 @@ import CocoaLumberjackSwift
 
         return setupMenuBarIcon(NSImage(named: NSImage.Name(stringLiteral: "icon-default")))
     }
+    
+    func changeMagnification(_ n: Int) {
+        let level = magnificationLevel + n
+        if AppDelegate.MIN_MAGNIFICATION <= level && level <= AppDelegate.MAX_MAGNIFICATION {
+            magnificationLevel = level
+        }
+    }
 
     /**
      * Below are methods related to saving/loading state from disk.

README.md

@@ -21,7 +21,7 @@ Pixel Picker is like Digital Color Meter, but lives in your menu bar and lets yo
 #### Via Homebrew:
 
 ```bash
-brew cask install pixel-picker
+brew install --cask pixel-picker
 ```
 
 #### Via GitHub Releases