feat: Controller Overlay

src/citron/controller_overlay.h

@@ -0,0 +1,38 @@
+// SPDX-FileCopyrightText: Copyright 2025 citron Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+#include <QWidget>
+#include <QTimer>
+
+class GMainWindow;
+class PlayerControlPreview;
+class QSizeGrip;
+
+class ControllerOverlay : public QWidget {
+	Q_OBJECT
+
+public:
+	explicit ControllerOverlay(GMainWindow* parent);
+	~ControllerOverlay() override;
+
+protected:
+	void paintEvent(QPaintEvent* event) override;
+	void mousePressEvent(QMouseEvent* event) override;
+	void mouseMoveEvent(QMouseEvent* event) override;
+	void mouseReleaseEvent(QMouseEvent* event) override;
+	void resizeEvent(QResizeEvent* event) override;
+
+private slots:
+	void UpdateControllerState();
+
+private:
+	GMainWindow* main_window;
+	QTimer update_timer;
+
+	PlayerControlPreview* controller_widget;
+	QSizeGrip* size_grip;
+
+	bool is_dragging = false;
+	QPoint drag_start_pos;
+};