Qt: Move screen-related stuff to own folder

CMakeLists.txt

@@ -730,21 +730,22 @@ if(NOT BUILD_HYDRA_CORE AND NOT BUILD_LIBRETRO_CORE)
         option(GENERATE_QT_TRANSLATION "Generate Qt translation file" OFF)
         set(QT_LANGUAGES docs/translations)
 
-        set(FRONTEND_SOURCE_FILES src/panda_qt/main.cpp src/panda_qt/screen.cpp src/panda_qt/main_window.cpp src/panda_qt/about_window.cpp
+        set(FRONTEND_SOURCE_FILES src/panda_qt/main.cpp src/panda_qt/main_window.cpp src/panda_qt/about_window.cpp
             src/panda_qt/config_window.cpp src/panda_qt/zep.cpp src/panda_qt/text_editor.cpp src/panda_qt/cheats_window.cpp src/panda_qt/mappings.cpp
             src/panda_qt/patch_window.cpp src/panda_qt/elided_label.cpp src/panda_qt/shader_editor.cpp src/panda_qt/translations.cpp
             src/panda_qt/thread_debugger.cpp src/panda_qt/cpu_debugger.cpp src/panda_qt/dsp_debugger.cpp src/panda_qt/input_window.cpp
+            src/panda_qt/screen/screen.cpp
         )
 
-        set(FRONTEND_HEADER_FILES include/panda_qt/screen.hpp include/panda_qt/main_window.hpp include/panda_qt/about_window.hpp
+        set(FRONTEND_HEADER_FILES include/panda_qt/main_window.hpp include/panda_qt/about_window.hpp
             include/panda_qt/config_window.hpp include/panda_qt/text_editor.hpp include/panda_qt/cheats_window.hpp
             include/panda_qt/patch_window.hpp include/panda_qt/elided_label.hpp include/panda_qt/shader_editor.hpp
             include/panda_qt/thread_debugger.hpp include/panda_qt/cpu_debugger.hpp include/panda_qt/dsp_debugger.hpp
-            include/panda_qt/disabled_widget_overlay.hpp include/panda_qt/input_window.hpp
+            include/panda_qt/disabled_widget_overlay.hpp include/panda_qt/input_window.hpp include/panda_qt/screen/screen.hpp
         )
 
         if (APPLE AND ENABLE_METAL)
-            set(FRONTEND_SOURCE_FILES ${FRONTEND_SOURCE_FILES} src/panda_qt/metal_context.mm)
+            set(FRONTEND_SOURCE_FILES ${FRONTEND_SOURCE_FILES} src/panda_qt/screen/metal_context.mm)
         endif()
 
         source_group("Source Files\\Qt" FILES ${FRONTEND_SOURCE_FILES})

include/panda_qt/main_window.hpp

@@ -20,7 +20,7 @@
 #include "panda_qt/cpu_debugger.hpp"
 #include "panda_qt/dsp_debugger.hpp"
 #include "panda_qt/patch_window.hpp"
-#include "panda_qt/screen.hpp"
+#include "panda_qt/screen/screen.hpp"
 #include "panda_qt/shader_editor.hpp"
 #include "panda_qt/text_editor.hpp"
 #include "panda_qt/thread_debugger.hpp"

include/panda_qt/screen/screen.hpp

@@ -0,0 +1,67 @@
+#pragma once
+#include <QWidget>
+#include <functional>
+#include <memory>
+
+#include "gl/context.h"
+#include "screen_layout.hpp"
+#include "window_info.h"
+
+// OpenGL widget for drawing the 3DS screen
+class ScreenWidget : public QWidget {
+	Q_OBJECT
+
+  public:
+	using ResizeCallback = std::function<void(u32, u32)>;
+
+	enum class API { OpenGL, Metal, Vulkan };
+
+	ScreenWidget(API api, ResizeCallback resizeCallback, QWidget* parent = nullptr);
+	void resizeEvent(QResizeEvent* event) override;
+	// Called by the emulator thread for resizing the actual GL surface, since the emulator thread owns the GL context
+	void resizeSurface(u32 width, u32 height);
+
+	GL::Context* getGLContext() { return glContext.get(); }
+	void* getMTKLayer() { return mtkLayer; }
+
+	// Dimensions of our output surface
+	u32 surfaceWidth = 0;
+	u32 surfaceHeight = 0;
+	WindowInfo windowInfo;
+
+	// Cached "previous" dimensions, used when resizing our window
+	u32 previousWidth = 0;
+	u32 previousHeight = 0;
+
+	API api = API::OpenGL;
+
+	// Coordinates (x/y/width/height) for the two screens in window space, used for properly handling touchscreen regardless
+	// of layout or resizing
+	ScreenLayout::WindowCoordinates screenCoordinates;
+	// Screen layouts and sizes
+	ScreenLayout::Layout screenLayout = ScreenLayout::Layout::Default;
+	float topScreenSize = 0.5f;
+
+	void reloadScreenLayout(ScreenLayout::Layout newLayout, float newTopScreenSize);
+
+  private:
+	// GL context for GL-based renderers
+	std::unique_ptr<GL::Context> glContext = nullptr;
+
+	// CA::MetalLayer for the Metal renderer
+	void* mtkLayer = nullptr;
+
+	ResizeCallback resizeCallback;
+
+	bool createGLContext();
+	bool createMetalContext();
+
+	void resizeMetalView();
+
+	qreal devicePixelRatioFromScreen() const;
+	int scaledWindowWidth() const;
+	int scaledWindowHeight() const;
+	std::optional<WindowInfo> getWindowInfo();
+
+	void reloadScreenCoordinates();
+};

src/panda_qt/screen/metal_context.mm

@@ -5,7 +5,7 @@
 #import <QWindow>
 #import <QuartzCore/QuartzCore.hpp>
 
-#import "panda_qt/screen.hpp"
+#import "panda_qt/screen/screen.hpp"
 
 bool ScreenWidget::createMetalContext() {
 	NSView* nativeView = (NSView*)this->winId();

src/panda_qt/screen/screen.cpp

@@ -12,7 +12,7 @@
 #include <qpa/qplatformnativeinterface.h>
 #endif
 
-#include "panda_qt/screen.hpp"
+#include "panda_qt/screen/screen.hpp"
 
 // OpenGL screen widget, based on https://github.com/stenzek/duckstation/blob/master/src/duckstation-qt/displaywidget.cpp
 // and https://github.com/melonDS-emu/melonDS/blob/master/src/frontend/qt_sdl/main.cpp