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diff --git a/src/yuzu/applets/qt_software_keyboard.h b/src/yuzu/applets/qt_software_keyboard.h
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+++ b/src/yuzu/applets/qt_software_keyboard.h
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+// Copyright 2021 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <atomic>
+#include <memory>
+#include <thread>
+
+#include <QDialog>
+#include <QValidator>
+
+#include "core/frontend/applets/software_keyboard.h"
+
+enum class HIDButton : u8;
+
+class InputInterpreter;
+
+namespace Core {
+class System;
+}
+
+namespace Ui {
+class QtSoftwareKeyboardDialog;
+}
+
+class GMainWindow;
+
+class QtSoftwareKeyboardDialog final : public QDialog {
+    Q_OBJECT
+
+public:
+    QtSoftwareKeyboardDialog(QWidget* parent, Core::System& system_, bool is_inline_,
+                             Core::Frontend::KeyboardInitializeParameters initialize_parameters_);
+    ~QtSoftwareKeyboardDialog() override;
+
+    void ShowNormalKeyboard(QPoint pos, QSize size);
+
+    void ShowTextCheckDialog(Service::AM::Applets::SwkbdTextCheckResult text_check_result,
+                             std::u16string text_check_message);
+
+    void ShowInlineKeyboard(Core::Frontend::InlineAppearParameters appear_parameters, QPoint pos,
+                            QSize size);
+
+    void HideInlineKeyboard();
+
+    void InlineTextChanged(Core::Frontend::InlineTextParameters text_parameters);
+
+    void ExitKeyboard();
+
+signals:
+    void SubmitNormalText(Service::AM::Applets::SwkbdResult result,
+                          std::u16string submitted_text) const;
+
+    void SubmitInlineText(Service::AM::Applets::SwkbdReplyType reply_type,
+                          std::u16string submitted_text, s32 cursor_position) const;
+
+public slots:
+    void open() override;
+    void reject() override;
+
+protected:
+    /// We override the keyPressEvent for inputting text into the inline software keyboard.
+    void keyPressEvent(QKeyEvent* event) override;
+
+private:
+    enum class Direction {
+        Left,
+        Up,
+        Right,
+        Down,
+    };
+
+    enum class BottomOSKIndex {
+        LowerCase,
+        UpperCase,
+        NumberPad,
+    };
+
+    /**
+     * Moves and resizes the window to a specified position and size.
+     *
+     * @param pos Top-left window position
+     * @param size Window size
+     */
+    void MoveAndResizeWindow(QPoint pos, QSize size);
+
+    /**
+     * Rescales all keyboard elements to account for High DPI displays.
+     *
+     * @param width Window width
+     * @param height Window height
+     * @param dpi_scale Display scaling factor
+     */
+    void RescaleKeyboardElements(float width, float height, float dpi_scale);
+
+    /// Sets the keyboard type based on initialize_parameters.
+    void SetKeyboardType();
+
+    /// Sets the password mode based on initialize_parameters.
+    void SetPasswordMode();
+
+    /// Sets the text draw type based on initialize_parameters.
+    void SetTextDrawType();
+
+    /// Sets the controller image at the bottom left of the software keyboard.
+    void SetControllerImage();
+
+    /// Disables buttons based on initialize_parameters.
+    void DisableKeyboardButtons();
+
+    /// Changes whether the backspace or/and ok buttons should be enabled or disabled.
+    void SetBackspaceOkEnabled();
+
+    /**
+     * Validates the input text sent in based on the parameters in initialize_parameters.
+     *
+     * @param input_text Input text
+     *
+     * @returns True if the input text is valid, false otherwise.
+     */
+    bool ValidateInputText(const QString& input_text);
+
+    /// Switches between LowerCase and UpperCase (Shift and Caps Lock)
+    void ChangeBottomOSKIndex();
+
+    /// Processes a keyboard button click from the UI as normal keyboard input.
+    void NormalKeyboardButtonClicked(QPushButton* button);
+
+    /// Processes a keyboard button click from the UI as inline keyboard input.
+    void InlineKeyboardButtonClicked(QPushButton* button);
+
+    /**
+     * Inserts a string of arbitrary length into the current_text at the current cursor position.
+     * This is only used for the inline software keyboard.
+     */
+    void InlineTextInsertString(std::u16string_view string);
+
+    /// Setup the mouse hover workaround for "focusing" buttons. This should only be called once.
+    void SetupMouseHover();
+
+    /**
+     * Handles button presses and converts them into keyboard input.
+     *
+     * @tparam HIDButton The list of buttons that can be converted into keyboard input.
+     */
+    template <HIDButton... T>
+    void HandleButtonPressedOnce();
+
+    /**
+     * Handles button holds and converts them into keyboard input.
+     *
+     * @tparam HIDButton The list of buttons that can be converted into keyboard input.
+     */
+    template <HIDButton... T>
+    void HandleButtonHold();
+
+    /**
+     * Translates a button press to focus or click a keyboard button.
+     *
+     * @param button The button press to process.
+     */
+    void TranslateButtonPress(HIDButton button);
+
+    /**
+     * Moves the focus of a button in a certain direction.
+     *
+     * @param direction The direction to move.
+     */
+    void MoveButtonDirection(Direction direction);
+
+    /**
+     * Moves the text cursor in a certain direction.
+     *
+     * @param direction The direction to move.
+     */
+    void MoveTextCursorDirection(Direction direction);
+
+    void StartInputThread();
+    void StopInputThread();
+
+    /// The thread where input is being polled and processed.
+    void InputThread();
+
+    std::unique_ptr<Ui::QtSoftwareKeyboardDialog> ui;
+
+    Core::System& system;
+
+    // True if it is the inline software keyboard.
+    bool is_inline;
+
+    // Common software keyboard initialize parameters.
+    Core::Frontend::KeyboardInitializeParameters initialize_parameters;
+
+    // Used only by the inline software keyboard since the QLineEdit or QTextEdit is hidden.
+    std::u16string current_text;
+    s32 cursor_position{0};
+
+    static constexpr std::size_t NUM_ROWS_NORMAL = 5;
+    static constexpr std::size_t NUM_COLUMNS_NORMAL = 12;
+    static constexpr std::size_t NUM_ROWS_NUMPAD = 4;
+    static constexpr std::size_t NUM_COLUMNS_NUMPAD = 4;
+
+    // Stores the normal keyboard layout.
+    std::array<std::array<std::array<QPushButton*, NUM_COLUMNS_NORMAL>, NUM_ROWS_NORMAL>, 2>
+        keyboard_buttons;
+    // Stores the numberpad keyboard layout.
+    std::array<std::array<QPushButton*, NUM_COLUMNS_NUMPAD>, NUM_ROWS_NUMPAD> numberpad_buttons;
+
+    // Contains a set of all buttons used in keyboard_buttons and numberpad_buttons.
+    std::array<QPushButton*, 110> all_buttons;
+
+    std::size_t row{0};
+    std::size_t column{0};
+
+    BottomOSKIndex bottom_osk_index{BottomOSKIndex::LowerCase};
+    std::atomic<bool> caps_lock_enabled{false};
+
+    std::unique_ptr<InputInterpreter> input_interpreter;
+
+    std::thread input_thread;
+
+    std::atomic<bool> input_thread_running{};
+};
+
+class QtSoftwareKeyboard final : public QObject, public Core::Frontend::SoftwareKeyboardApplet {
+    Q_OBJECT
+
+public:
+    explicit QtSoftwareKeyboard(GMainWindow& parent);
+    ~QtSoftwareKeyboard() override;
+
+    void InitializeKeyboard(
+        bool is_inline, Core::Frontend::KeyboardInitializeParameters initialize_parameters,
+        std::function<void(Service::AM::Applets::SwkbdResult, std::u16string)>
+            submit_normal_callback_,
+        std::function<void(Service::AM::Applets::SwkbdReplyType, std::u16string, s32)>
+            submit_inline_callback_) override;
+
+    void ShowNormalKeyboard() const override;
+
+    void ShowTextCheckDialog(Service::AM::Applets::SwkbdTextCheckResult text_check_result,
+                             std::u16string text_check_message) const override;
+
+    void ShowInlineKeyboard(
+        Core::Frontend::InlineAppearParameters appear_parameters) const override;
+
+    void HideInlineKeyboard() const override;
+
+    void InlineTextChanged(Core::Frontend::InlineTextParameters text_parameters) const override;
+
+    void ExitKeyboard() const override;
+
+signals:
+    void MainWindowInitializeKeyboard(
+        bool is_inline, Core::Frontend::KeyboardInitializeParameters initialize_parameters) const;
+
+    void MainWindowShowNormalKeyboard() const;
+
+    void MainWindowShowTextCheckDialog(Service::AM::Applets::SwkbdTextCheckResult text_check_result,
+                                       std::u16string text_check_message) const;
+
+    void MainWindowShowInlineKeyboard(
+        Core::Frontend::InlineAppearParameters appear_parameters) const;
+
+    void MainWindowHideInlineKeyboard() const;
+
+    void MainWindowInlineTextChanged(Core::Frontend::InlineTextParameters text_parameters) const;
+
+    void MainWindowExitKeyboard() const;
+
+private:
+    void SubmitNormalText(Service::AM::Applets::SwkbdResult result,
+                          std::u16string submitted_text) const;
+
+    void SubmitInlineText(Service::AM::Applets::SwkbdReplyType reply_type,
+                          std::u16string submitted_text, s32 cursor_position) const;
+
+    mutable std::function<void(Service::AM::Applets::SwkbdResult, std::u16string)>
+        submit_normal_callback;
+    mutable std::function<void(Service::AM::Applets::SwkbdReplyType, std::u16string, s32)>
+        submit_inline_callback;
+};