yuzu: Add custom ringcon configuration

src/yuzu/configuration/configure_ringcon.h

@@ -0,0 +1,85 @@
+// Copyright 2022 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <functional>
+#include <memory>
+#include <QDialog>
+
+namespace InputCommon {
+class InputSubsystem;
+} // namespace InputCommon
+
+namespace Core::HID {
+class HIDCore;
+class EmulatedDevices;
+} // namespace Core::HID
+
+namespace Ui {
+class ConfigureRingController;
+} // namespace Ui
+
+class ConfigureRingController : public QDialog {
+    Q_OBJECT
+
+public:
+    explicit ConfigureRingController(QWidget* parent, InputCommon::InputSubsystem* input_subsystem_,
+                                     Core::HID::HIDCore& hid_core_);
+    ~ConfigureRingController() override;
+
+    void ApplyConfiguration();
+
+private:
+    void changeEvent(QEvent* event) override;
+    void RetranslateUI();
+
+    void UpdateUI();
+
+    /// Load configuration settings.
+    void LoadConfiguration();
+
+    /// Restore all buttons to their default values.
+    void RestoreDefaults();
+
+    /// Called when the button was pressed.
+    void HandleClick(QPushButton* button,
+                     std::function<void(const Common::ParamPackage&)> new_input_setter,
+                     InputCommon::Polling::InputType type);
+
+    /// Finish polling and configure input using the input_setter.
+    void SetPollingResult(const Common::ParamPackage& params, bool abort);
+
+    /// Checks whether a given input can be accepted.
+    bool IsInputAcceptable(const Common::ParamPackage& params) const;
+
+    /// Handle mouse button press events.
+    void mousePressEvent(QMouseEvent* event) override;
+
+    /// Handle key press events.
+    void keyPressEvent(QKeyEvent* event) override;
+
+    QString ButtonToText(const Common::ParamPackage& param);
+
+    QString AnalogToText(const Common::ParamPackage& param, const std::string& dir);
+
+    static constexpr int ANALOG_SUB_BUTTONS_NUM = 2;
+
+    // A group of four QPushButtons represent one analog input. The buttons each represent left,
+    // right, respectively.
+    std::array<QPushButton*, ANALOG_SUB_BUTTONS_NUM> analog_map_buttons;
+
+    static const std::array<std::string, ANALOG_SUB_BUTTONS_NUM> analog_sub_buttons;
+
+    std::unique_ptr<QTimer> timeout_timer;
+    std::unique_ptr<QTimer> poll_timer;
+
+    /// This will be the the setting function when an input is awaiting configuration.
+    std::optional<std::function<void(const Common::ParamPackage&)>> input_setter;
+
+    InputCommon::InputSubsystem* input_subsystem;
+    Core::HID::EmulatedDevices* emulated_device;
+
+    std::unique_ptr<Ui::ConfigureRingController> ui;
+};