Resizing window on Qt (#556)

* Qt: Add screen resize

* Qt: Allocate screen on heap for setCentralWidget

* Fix header inclusion order

* Switch to std::function for resize callback

* rdeepfried

include/panda_qt/main_window.hpp

@@ -50,6 +50,7 @@ class MainWindow : public QMainWindow {
 		PressTouchscreen,
 		ReleaseTouchscreen,
 		ReloadUbershader,
+		SetScreenSize,
 	};
 
 	// Tagged union representing our message queue messages
@@ -81,6 +82,11 @@ class MainWindow : public QMainWindow {
 				u16 x;
 				u16 y;
 			} touchscreen;
+
+			struct {
+				u32 width;
+				u32 height;
+			} screenSize;
 		};
 	};
 
@@ -95,7 +101,7 @@ class MainWindow : public QMainWindow {
 
 	QMenuBar* menuBar = nullptr;
 	InputMappings keyboardMappings;
-	ScreenWidget screen;
+	ScreenWidget* screen;
 	AboutWindow* aboutWindow;
 	ConfigWindow* configWindow;
 	CheatsWindow* cheatsEditor;
@@ -141,4 +147,6 @@ class MainWindow : public QMainWindow {
 	void loadLuaScript(const std::string& code);
 	void reloadShader(const std::string& shader);
 	void editCheat(u32 handle, const std::vector<uint8_t>& cheat, const std::function<void(u32)>& callback);
+
+	void handleScreenResize(u32 width, u32 height);
 };