qt: Fix paintEvent not being called until window resize on macOS. (#25)

* qt: Remove need for AppleSurfaceHelper.

* qt: Fix paintEvent not being called until window resize on macOS.

src/citra_qt/CMakeLists.txt

@@ -250,8 +250,6 @@ if (APPLE)
     set_target_properties(citra-qt PROPERTIES MACOSX_BUNDLE TRUE)
     set_target_properties(citra-qt PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${CMAKE_CURRENT_SOURCE_DIR}/Info.plist)
     target_sources(citra-qt PRIVATE
-        applesurfacehelper.h
-        applesurfacehelper.mm
         macos_authorization.h
         macos_authorization.mm
     )

src/citra_qt/applesurfacehelper.h

@@ -1,11 +0,0 @@
-// Copyright 2022 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#pragma once
-
-namespace AppleSurfaceHelper {
-
-void* GetSurfaceLayer(void* surface);
-
-} // namespace AppleSurfaceHelper

src/citra_qt/applesurfacehelper.mm

@@ -1,16 +0,0 @@
-// Copyright 2022 Citra Emulator Project
-// Licensed under GPLv2 or any later version
-// Refer to the license.txt file included.
-
-#import <Cocoa/Cocoa.h>
-
-#include "citra_qt/applesurfacehelper.h"
-
-namespace AppleSurfaceHelper {
-
-void* GetSurfaceLayer(void* surface) {
-    NSView* view = static_cast<NSView*>(surface);
-    return view.layer;
-}
-
-} // namespace AppleSurfaceHelper

src/citra_qt/bootmanager.cpp

@@ -25,7 +25,8 @@
 #include "video_core/video_core.h"
 
 #if defined(__APPLE__)
-#include "citra_qt/applesurfacehelper.h"
+#include <objc/message.h>
+#include <objc/objc.h>
 #endif
 
 #if !defined(WIN32)
@@ -351,22 +352,26 @@ static Frontend::EmuWindow::WindowSystemInfo GetWindowSystemInfo(QWindow* window
     Frontend::EmuWindow::WindowSystemInfo wsi;
     wsi.type = GetWindowSystemType();
 
-    // Our Win32 Qt external doesn't have the private API.
+    if (window) {
 #if defined(WIN32)
-    wsi.render_surface = window ? reinterpret_cast<void*>(window->winId()) : nullptr;
+        // Our Win32 Qt external doesn't have the private API.
+        wsi.render_surface = reinterpret_cast<void*>(window->winId());
 #elif defined(__APPLE__)
-    wsi.render_surface =
-        window ? AppleSurfaceHelper::GetSurfaceLayer(reinterpret_cast<void*>(window->winId()))
-               : nullptr;
+        wsi.render_surface = reinterpret_cast<void* (*)(id, SEL)>(objc_msgSend)(
+            reinterpret_cast<id>(window->winId()), sel_registerName("layer"));
 #else
-    QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
-    wsi.display_connection = pni->nativeResourceForWindow("display", window);
-    if (wsi.type == Frontend::WindowSystemType::Wayland)
-        wsi.render_surface = window ? pni->nativeResourceForWindow("surface", window) : nullptr;
-    else
-        wsi.render_surface = window ? reinterpret_cast<void*>(window->winId()) : nullptr;
+        QPlatformNativeInterface* pni = QGuiApplication::platformNativeInterface();
+        wsi.display_connection = pni->nativeResourceForWindow("display", window);
+        if (wsi.type == Frontend::WindowSystemType::Wayland)
+            wsi.render_surface = pni->nativeResourceForWindow("surface", window);
+        else
+            wsi.render_surface = reinterpret_cast<void*>(window->winId());
 #endif
-    wsi.render_surface_scale = window ? static_cast<float>(window->devicePixelRatio()) : 1.0f;
+        wsi.render_surface_scale = static_cast<float>(window->devicePixelRatio());
+    } else {
+        wsi.render_surface = nullptr;
+        wsi.render_surface_scale = 1.0f;
+    }
 
     return wsi;
 }

src/citra_qt/main.cpp

@@ -1184,10 +1184,6 @@ void GMainWindow::BootGame(const QString& filename) {
         setMouseTracking(true);
     }
 
-    // show and hide the render_window to create the context
-    render_window->show();
-    render_window->hide();
-
     loading_screen->Prepare(Core::System::GetInstance().GetAppLoader());
     loading_screen->show();