pomelo scraps

src/ios/EmulationHandler.swift

@@ -0,0 +1,96 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+// SPDX-FileCopyrightText: Copyright 2024 Pomelo, Stossy11
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import SwiftUI
+import AppUI
+import Metal
+import Foundation
+
+class EmulationViewModel: ObservableObject {
+    @Published var isShowingCustomButton = true
+    @State var should = false
+    var device: MTLDevice?
+    @State var mtkView: MTKView = MTKView()
+    var CaLayer: CAMetalLayer?
+    private var sudachiGame: EmulationGame?
+    private let appui = AppUI.shared
+    private var thread: Thread!
+    private var isRunning = false
+    var doesneedresources = false
+    @State var iscustom: Bool = false
+
+    init(game: EmulationGame?) {
+        self.device = MTLCreateSystemDefaultDevice()
+        self.sudachiGame = game
+    }
+
+    func configureAppUI(with mtkView: MTKView) {
+        self.mtkView = mtkView
+        device = self.mtkView.device
+        guard !isRunning else { return }
+        isRunning = true
+        appui.configure(layer: mtkView.layer as! CAMetalLayer, with: mtkView.frame.size)
+
+        iscustom = ((sudachiGame?.fileURL.startAccessingSecurityScopedResource()) != nil)
+
+        DispatchQueue.global(qos: .userInitiated).async { [self] in
+            if let sudachiGame = self.sudachiGame {
+                self.appui.insert(game: sudachiGame.fileURL)
+            } else {
+                self.appui.bootOS()
+            }
+        }
+
+        thread = .init(block: self.step)
+        thread.name = "Yuzu"
+        thread.qualityOfService = .userInteractive
+        thread.threadPriority = 0.9
+        thread.start()
+    }
+
+    private func step() {
+        while true {
+            appui.step()
+        }
+    }
+
+    func customButtonTapped() {
+        stopEmulation()
+    }
+
+    private func stopEmulation() {
+        if isRunning {
+            isRunning = false
+            appui.exit()
+            thread.cancel()
+            if iscustom {
+                sudachiGame?.fileURL.stopAccessingSecurityScopedResource()
+            }
+        }
+    }
+
+    func handleOrientationChange() {
+        DispatchQueue.main.async { [weak self] in
+            guard let self = self else { return }
+            let interfaceOrientation = self.getInterfaceOrientation(from: UIDevice.current.orientation)
+            self.appui.orientationChanged(orientation: interfaceOrientation, with: self.mtkView.layer as! CAMetalLayer, size: mtkView.frame.size)
+        }
+    }
+
+    private func getInterfaceOrientation(from deviceOrientation: UIDeviceOrientation) -> UIInterfaceOrientation {
+        switch deviceOrientation {
+        case .portrait:
+            return .portrait
+        case .portraitUpsideDown:
+            return .portraitUpsideDown
+        case .landscapeLeft:
+            return .landscapeRight
+        case .landscapeRight:
+            return .landscapeLeft
+        default:
+            return .unknown
+        }
+    }
+}