feat: add option for force 120hz

.codex/environments/environment.toml

@@ -0,0 +1,16 @@
+# THIS IS AUTOGENERATED. DO NOT EDIT MANUALLY
+version = 1
+name = "MNGA"
+
+[setup]
+script = ""
+
+[[actions]]
+name = "Run"
+icon = "run"
+command = "make launch"
+
+[[actions]]
+name = "Build"
+icon = "tool"
+command = "make build"

app/Shared/Localization/zh-Hans.lproj/Localizable.strings

@@ -156,6 +156,7 @@
 "Appearance" = "外观";
 "Custom Appearance" = "自定义外观";
 "Theme Color" = "主题色";
+"Prefer High Refresh Rate" = "高刷新率优先";
 "Hide Notification Shortcut" = "隐藏通知快捷入口";
 "New Short Message" = "发表短消息";
 "Send To" = "发送至";

app/Shared/MNGAApp.swift

@@ -13,16 +13,15 @@ import TipKit
 struct MNGAApp: App {
   @ObserveInjection var forceRedraw
 
-  #if os(iOS)
-    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
-  #endif
+  @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
 
   @StateObject var prefs = PreferencesStorage()
   @StateObject var networkMonitor = NetworkMonitor()
 
   init() {
     logger.info("MNGA Init")
     logicInitialConfigure()
+    ProMotionDisplayLink.shared.setEnabled(prefs.forceProMotionDisplayLink)
 
     #if DEBUG
       if prefs.debugResetTips, (try? Tips.resetDatastore()) != nil {
@@ -50,6 +49,7 @@ struct MNGAApp: App {
       ContentView()
         .onChange(of: prefs.themeColor) { setupColor() }
         .onChange(of: prefs.alwaysPortraitOnPhone) { AppInterfaceOrientation.applyCurrentPreference() }
+        .onChange(of: prefs.forceProMotionDisplayLink) { ProMotionDisplayLink.shared.setEnabled($1) }
         .onAppear { setupColor() }
         .onAppear { AppInterfaceOrientation.applyCurrentPreference() }
         .environment(\.whatsNew, MNGAWhatsNew.environment)

app/Shared/Storage/PreferencesStorage.swift

@@ -33,6 +33,7 @@ class PreferencesStorage: ObservableObject {
   @AppStorage("useInsetGroupedModern") var useInsetGroupedModern = true
   @AppStorage("hideMNGAMeta") var hideMNGAMeta = false
   @AppStorage("showPlusInTitle") var showPlusInTitle = false
+  @AppStorage("forceProMotionDisplayLink") var forceProMotionDisplayLink = false
   @AppStorage(alwaysPortraitOnPhonePreferenceKey) var alwaysPortraitOnPhone = false
 
   @AppStorage("requestOption") var requestOptionWrapper = WrappedMessage(inner: RequestOption()) {

app/Shared/Utilities/ProMotion.swift

@@ -0,0 +1,50 @@
+//
+//  ProMotion.swift
+//  MNGA
+//
+//  Created by Bugen Zhao on 2026/5/9.
+//
+
+import Foundation
+import QuartzCore
+import UIKit
+
+final class ProMotionDisplayLink: NSObject {
+  static let shared = ProMotionDisplayLink()
+
+  private var displayLink: CADisplayLink?
+
+  func setEnabled(_ enabled: Bool) {
+    if enabled {
+      start()
+    } else {
+      stop()
+    }
+  }
+
+  func start() {
+    guard displayLink == nil else { return }
+
+    let targetFPS = Float(min(UIScreen.main.maximumFramesPerSecond, 120))
+    let link = CADisplayLink(target: self, selector: #selector(tick))
+    link.preferredFrameRateRange = CAFrameRateRange(
+      minimum: targetFPS,
+      maximum: targetFPS,
+      preferred: targetFPS,
+    )
+    link.add(to: .main, forMode: .common)
+    displayLink = link
+
+    logger.info("started ProMotion display link at \(targetFPS) FPS")
+  }
+
+  func stop() {
+    guard let displayLink else { return }
+    displayLink.invalidate()
+    self.displayLink = nil
+
+    logger.info("stopped ProMotion display link")
+  }
+
+  @objc private func tick(_: CADisplayLink) {}
+}

app/Shared/Utilities/Window.swift

@@ -6,54 +6,51 @@
 //
 
 import Foundation
+import UIKit
 
-#if canImport(UIKit)
-  import UIKit
-
-  final class AppDelegate: NSObject, UIApplicationDelegate {
-    func application(_: UIApplication, supportedInterfaceOrientationsFor _: UIWindow?) -> UIInterfaceOrientationMask {
-      AppInterfaceOrientation.supportedOrientations
-    }
+final class AppDelegate: NSObject, UIApplicationDelegate {
+  func application(_: UIApplication, supportedInterfaceOrientationsFor _: UIWindow?) -> UIInterfaceOrientationMask {
+    AppInterfaceOrientation.supportedOrientations
   }
+}
 
-  enum AppInterfaceOrientation {
-    static var supportedOrientations: UIInterfaceOrientationMask {
-      guard UIDevice.current.userInterfaceIdiom == .phone else {
-        return .allButUpsideDown
-      }
-      return UserDefaults.standard.bool(forKey: alwaysPortraitOnPhonePreferenceKey) ? .portrait : .allButUpsideDown
+enum AppInterfaceOrientation {
+  static var supportedOrientations: UIInterfaceOrientationMask {
+    guard UIDevice.current.userInterfaceIdiom == .phone else {
+      return .allButUpsideDown
     }
+    return UserDefaults.standard.bool(forKey: alwaysPortraitOnPhonePreferenceKey) ? .portrait : .allButUpsideDown
+  }
 
-    @MainActor
-    static func applyCurrentPreference() {
-      guard UIDevice.current.userInterfaceIdiom == .phone else { return }
+  @MainActor
+  static func applyCurrentPreference() {
+    guard UIDevice.current.userInterfaceIdiom == .phone else { return }
 
-      guard let windowScene = UIApplication.shared.connectedScenes
-        .compactMap({ $0 as? UIWindowScene })
-        .first(where: { $0.activationState == .foregroundActive }) ?? UIApplication.shared.connectedScenes
-        .compactMap({ $0 as? UIWindowScene })
-        .first
-      else { return }
+    guard let windowScene = UIApplication.shared.connectedScenes
+      .compactMap({ $0 as? UIWindowScene })
+      .first(where: { $0.activationState == .foregroundActive }) ?? UIApplication.shared.connectedScenes
+      .compactMap({ $0 as? UIWindowScene })
+      .first
+    else { return }
 
-      windowScene.keyWindow?.rootViewController?.setNeedsUpdateOfSupportedInterfaceOrientations()
+    windowScene.keyWindow?.rootViewController?.setNeedsUpdateOfSupportedInterfaceOrientations()
 
-      let geometryPreferences = UIWindowScene.GeometryPreferences.iOS(interfaceOrientations: supportedOrientations)
-      windowScene.requestGeometryUpdate(geometryPreferences) { error in
-        logger.warning("failed to update interface orientation: \(error.localizedDescription)")
-      }
+    let geometryPreferences = UIWindowScene.GeometryPreferences.iOS(interfaceOrientations: supportedOrientations)
+    windowScene.requestGeometryUpdate(geometryPreferences) { error in
+      logger.warning("failed to update interface orientation: \(error.localizedDescription)")
     }
   }
-
-  extension UIApplication {
-    static var myKeyWindow: UIWindow? {
-      // Get connected scenes
-      UIApplication.shared.connectedScenes
-        // Keep only the first `UIWindowScene`
-        .first(where: { $0 is UIWindowScene })
-        // Get its associated windows
-        .flatMap { $0 as? UIWindowScene }?.windows
-        // Finally, keep only the key window
-        .first(where: \.isKeyWindow)
-    }
+}
+
+extension UIApplication {
+  static var myKeyWindow: UIWindow? {
+    // Get connected scenes
+    UIApplication.shared.connectedScenes
+      // Keep only the first `UIWindowScene`
+      .first(where: { $0 is UIWindowScene })
+      // Get its associated windows
+      .flatMap { $0 as? UIWindowScene }?.windows
+      // Finally, keep only the key window
+      .first(where: \.isKeyWindow)
   }
-#endif
+}

app/Shared/Views/PreferencesView.swift

@@ -209,6 +209,13 @@ struct PreferencesInnerView: View {
       Text("Modern").tag(true)
     }.disableWithPlusCheck(.customAppearance)
 
+    if UIScreen.main.maximumFramesPerSecond > 60 {
+      Toggle(isOn: $pref.forceProMotionDisplayLink) {
+        Label("Prefer High Refresh Rate", systemImage: "bolt.fill")
+      }
+      .onChange(of: pref.forceProMotionDisplayLink) { ProMotionDisplayLink.shared.setEnabled($1) }
+    }
+
     if UserInterfaceIdiom.current == .phone {
       Toggle(isOn: $pref.alwaysPortraitOnPhone) {
         Label("Lock Screen Rotation", systemImage: "iphone")

app/iOS/Info.plist

@@ -31,6 +31,8 @@
 	</array>
 	<key>CFBundleVersion</key>
 	<string>1</string>
+	<key>CADisableMinimumFrameDurationOnPhone</key>
+	<true/>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LSRequiresIPhoneOS</key>