diff --git a/libcockatrice_interfaces/libcockatrice/interfaces/interface_card_set_priority_controller.h b/libcockatrice_interfaces/libcockatrice/interfaces/interface_card_set_priority_controller.h
index 46a5897f7..b8fbbc74a 100644
--- a/libcockatrice_interfaces/libcockatrice/interfaces/interface_card_set_priority_controller.h
+++ b/libcockatrice_interfaces/libcockatrice/interfaces/interface_card_set_priority_controller.h
@@ -12,9 +12,9 @@ public:
     virtual void setEnabled(QString shortName, bool enabled) = 0;
     virtual void setIsKnown(QString shortName, bool isknown) = 0;
 
-    virtual unsigned int getSortKey(QString shortName) = 0;
-    virtual bool isEnabled(QString shortName) = 0;
-    virtual bool isKnown(QString shortName) = 0;
+    virtual unsigned int getSortKey(QString shortName) const = 0;
+    virtual bool isEnabled(QString shortName) const = 0;
+    virtual bool isKnown(QString shortName) const = 0;
 };
 
 #endif // COCKATRICE_INTERFACE_CARD_SET_PRIORITY_CONTROLLER_H
diff --git a/libcockatrice_interfaces/libcockatrice/interfaces/noop_card_set_priority_controller.h b/libcockatrice_interfaces/libcockatrice/interfaces/noop_card_set_priority_controller.h
index 949ab5a91..e5027648c 100644
--- a/libcockatrice_interfaces/libcockatrice/interfaces/noop_card_set_priority_controller.h
+++ b/libcockatrice_interfaces/libcockatrice/interfaces/noop_card_set_priority_controller.h
@@ -16,15 +16,15 @@ public:
     {
     }
 
-    unsigned int getSortKey(QString /* shortName */) override
+    unsigned int getSortKey(QString /* shortName */) const override
     {
         return 0;
     }
-    bool isEnabled(QString /* shortName */) override
+    bool isEnabled(QString /* shortName */) const override
     {
         return true;
     }
-    bool isKnown(QString /* shortName */) override
+    bool isKnown(QString /* shortName */) const override
     {
         return true;
     }
diff --git a/libcockatrice_settings/libcockatrice/settings/card_database_settings.cpp b/libcockatrice_settings/libcockatrice/settings/card_database_settings.cpp
index 79738f1cd..26a91a4dd 100644
--- a/libcockatrice_settings/libcockatrice/settings/card_database_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/card_database_settings.cpp
@@ -20,17 +20,17 @@ void CardDatabaseSettings::setIsKnown(QString shortName, bool isknown)
     setValue(isknown, "isknown", "sets", std::move(shortName));
 }
 
-unsigned int CardDatabaseSettings::getSortKey(QString shortName)
+unsigned int CardDatabaseSettings::getSortKey(QString shortName) const
 {
     return getValue("sortkey", "sets", std::move(shortName)).toUInt();
 }
 
-bool CardDatabaseSettings::isEnabled(QString shortName)
+bool CardDatabaseSettings::isEnabled(QString shortName) const
 {
     return getValue("enabled", "sets", std::move(shortName)).toBool();
 }
 
-bool CardDatabaseSettings::isKnown(QString shortName)
+bool CardDatabaseSettings::isKnown(QString shortName) const
 {
     return getValue("isknown", "sets", std::move(shortName)).toBool();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/card_database_settings.h b/libcockatrice_settings/libcockatrice/settings/card_database_settings.h
index 9a176a99b..bb946ea80 100644
--- a/libcockatrice_settings/libcockatrice/settings/card_database_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/card_database_settings.h
@@ -22,9 +22,9 @@ public:
     void setEnabled(QString shortName, bool enabled) override;
     void setIsKnown(QString shortName, bool isknown) override;
 
-    unsigned int getSortKey(QString shortName) override;
-    bool isEnabled(QString shortName) override;
-    bool isKnown(QString shortName) override;
+    unsigned int getSortKey(QString shortName) const override;
+    bool isEnabled(QString shortName) const override;
+    bool isKnown(QString shortName) const override;
 
 private:
     explicit CardDatabaseSettings(const QString &settingPath, QObject *parent = nullptr);
diff --git a/libcockatrice_settings/libcockatrice/settings/card_override_settings.cpp b/libcockatrice_settings/libcockatrice/settings/card_override_settings.cpp
index 894358be6..a61a4693b 100644
--- a/libcockatrice_settings/libcockatrice/settings/card_override_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/card_override_settings.cpp
@@ -15,7 +15,7 @@ void CardOverrideSettings::deleteCardPreferenceOverride(const QString &cardName)
     deleteValue(cardName);
 }
 
-QString CardOverrideSettings::getCardPreferenceOverride(const QString &cardName)
+QString CardOverrideSettings::getCardPreferenceOverride(const QString &cardName) const
 {
     return getValue(cardName).toString();
 }
\ No newline at end of file
diff --git a/libcockatrice_settings/libcockatrice/settings/card_override_settings.h b/libcockatrice_settings/libcockatrice/settings/card_override_settings.h
index d5ee0287b..3d9db4e65 100644
--- a/libcockatrice_settings/libcockatrice/settings/card_override_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/card_override_settings.h
@@ -22,7 +22,7 @@ public:
 
     void deleteCardPreferenceOverride(const QString &cardName);
 
-    QString getCardPreferenceOverride(const QString &cardName);
+    QString getCardPreferenceOverride(const QString &cardName) const;
 
 private:
     explicit CardOverrideSettings(const QString &settingPath, QObject *parent = nullptr);
diff --git a/libcockatrice_settings/libcockatrice/settings/debug_settings.cpp b/libcockatrice_settings/libcockatrice/settings/debug_settings.cpp
index 084696dc1..5bf6eca30 100644
--- a/libcockatrice_settings/libcockatrice/settings/debug_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/debug_settings.cpp
@@ -11,22 +11,22 @@ DebugSettings::DebugSettings(const QString &settingPath, QObject *parent)
     }
 }
 
-bool DebugSettings::getShowCardId()
+bool DebugSettings::getShowCardId() const
 {
     return getValue("showCardId").toBool();
 }
 
-bool DebugSettings::getLocalGameOnStartup()
+bool DebugSettings::getLocalGameOnStartup() const
 {
     return getValue("onStartup", "localgame").toBool();
 }
 
-int DebugSettings::getLocalGamePlayerCount()
+int DebugSettings::getLocalGamePlayerCount() const
 {
     return getValue("playerCount", "localgame").toInt();
 }
 
-QString DebugSettings::getDeckPathForPlayer(const QString &playerName)
+QString DebugSettings::getDeckPathForPlayer(const QString &playerName) const
 {
     return getValue(playerName, "localgame", "deck").toString();
 }
\ No newline at end of file
diff --git a/libcockatrice_settings/libcockatrice/settings/debug_settings.h b/libcockatrice_settings/libcockatrice/settings/debug_settings.h
index 2087b16b3..30cdd5fa5 100644
--- a/libcockatrice_settings/libcockatrice/settings/debug_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/debug_settings.h
@@ -17,12 +17,12 @@ class DebugSettings : public SettingsManager
     DebugSettings(const DebugSettings & /*other*/);
 
 public:
-    bool getShowCardId();
+    bool getShowCardId() const;
 
-    bool getLocalGameOnStartup();
-    int getLocalGamePlayerCount();
+    bool getLocalGameOnStartup() const;
+    int getLocalGamePlayerCount() const;
 
-    QString getDeckPathForPlayer(const QString &playerName);
+    QString getDeckPathForPlayer(const QString &playerName) const;
 };
 
 #endif // DEBUG_SETTINGS_H
diff --git a/libcockatrice_settings/libcockatrice/settings/download_settings.cpp b/libcockatrice_settings/libcockatrice/settings/download_settings.cpp
index ad4b81ec5..66525a598 100644
--- a/libcockatrice_settings/libcockatrice/settings/download_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/download_settings.cpp
@@ -18,7 +18,7 @@ void DownloadSettings::setDownloadUrls(const QStringList &downloadURLs)
     setValue(QVariant::fromValue(downloadURLs), "urls");
 }
 
-QStringList DownloadSettings::getAllURLs()
+QStringList DownloadSettings::getAllURLs() const
 {
     return getValue("urls").toStringList();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/download_settings.h b/libcockatrice_settings/libcockatrice/settings/download_settings.h
index ed3634ea1..b7442301e 100644
--- a/libcockatrice_settings/libcockatrice/settings/download_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/download_settings.h
@@ -19,7 +19,7 @@ class DownloadSettings : public SettingsManager
 public:
     explicit DownloadSettings(const QString &, QObject *);
 
-    QStringList getAllURLs();
+    QStringList getAllURLs() const;
     void setDownloadUrls(const QStringList &downloadURLs);
     void resetToDefaultURLs();
 };
diff --git a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
index e5db3010d..4f5bf52ee 100644
--- a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.cpp
@@ -8,11 +8,11 @@ GameFiltersSettings::GameFiltersSettings(const QString &settingPath, QObject *pa
 {
 }
 
-/*
+/**
  * The game type might contain special characters, so to use it in
  * QSettings we just hash it.
  */
-QString GameFiltersSettings::hashGameType(const QString &gameType) const
+static QString hashGameType(const QString &gameType)
 {
     return QCryptographicHash::hash(gameType.toUtf8(), QCryptographicHash::Md5).toHex();
 }
@@ -22,7 +22,7 @@ void GameFiltersSettings::setHideBuddiesOnlyGames(bool hide)
     setValue(hide, "hide_buddies_only_games");
 }
 
-bool GameFiltersSettings::isHideBuddiesOnlyGames()
+bool GameFiltersSettings::isHideBuddiesOnlyGames() const
 {
     QVariant previous = getValue("hide_buddies_only_games");
     return previous == QVariant() ? false : previous.toBool();
@@ -33,7 +33,7 @@ void GameFiltersSettings::setHideFullGames(bool hide)
     setValue(hide, "hide_full_games");
 }
 
-bool GameFiltersSettings::isHideFullGames()
+bool GameFiltersSettings::isHideFullGames() const
 {
     QVariant previous = getValue("hide_full_games");
     return previous == QVariant() ? false : previous.toBool();
@@ -44,7 +44,7 @@ void GameFiltersSettings::setHideGamesThatStarted(bool hide)
     setValue(hide, "hide_games_that_started");
 }
 
-bool GameFiltersSettings::isHideGamesThatStarted()
+bool GameFiltersSettings::isHideGamesThatStarted() const
 {
     QVariant previous = getValue("hide_games_that_started");
     return previous == QVariant() ? false : previous.toBool();
@@ -55,7 +55,7 @@ void GameFiltersSettings::setHidePasswordProtectedGames(bool hide)
     setValue(hide, "hide_password_protected_games");
 }
 
-bool GameFiltersSettings::isHidePasswordProtectedGames()
+bool GameFiltersSettings::isHidePasswordProtectedGames() const
 {
     QVariant previous = getValue("hide_password_protected_games");
     return previous == QVariant() ? false : previous.toBool();
@@ -66,7 +66,7 @@ void GameFiltersSettings::setHideIgnoredUserGames(bool hide)
     setValue(hide, "hide_ignored_user_games");
 }
 
-bool GameFiltersSettings::isHideIgnoredUserGames()
+bool GameFiltersSettings::isHideIgnoredUserGames() const
 {
     QVariant previous = getValue("hide_ignored_user_games");
     return previous == QVariant() ? true : previous.toBool();
@@ -77,7 +77,7 @@ void GameFiltersSettings::setHideNotBuddyCreatedGames(bool hide)
     setValue(hide, "hide_not_buddy_created_games");
 }
 
-bool GameFiltersSettings::isHideNotBuddyCreatedGames()
+bool GameFiltersSettings::isHideNotBuddyCreatedGames() const
 {
     QVariant previous = getValue("hide_not_buddy_created_games");
     return previous == QVariant() ? false : previous.toBool();
@@ -88,7 +88,7 @@ void GameFiltersSettings::setHideOpenDecklistGames(bool hide)
     setValue(hide, "hide_open_decklist_games");
 }
 
-bool GameFiltersSettings::isHideOpenDecklistGames()
+bool GameFiltersSettings::isHideOpenDecklistGames() const
 {
     QVariant previous = getValue("hide_open_decklist_games");
     return previous == QVariant() ? false : previous.toBool();
@@ -99,7 +99,7 @@ void GameFiltersSettings::setGameNameFilter(QString gameName)
     setValue(gameName, "game_name_filter");
 }
 
-QString GameFiltersSettings::getGameNameFilter()
+QString GameFiltersSettings::getGameNameFilter() const
 {
     return getValue("game_name_filter").toString();
 }
@@ -109,7 +109,7 @@ void GameFiltersSettings::setCreatorNameFilters(QStringList creatorName)
     setValue(creatorName, "creator_name_filter");
 }
 
-QStringList GameFiltersSettings::getCreatorNameFilters()
+QStringList GameFiltersSettings::getCreatorNameFilters() const
 {
     return getValue("creator_name_filter").toStringList();
 }
@@ -119,7 +119,7 @@ void GameFiltersSettings::setMinPlayers(int min)
     setValue(min, "min_players");
 }
 
-int GameFiltersSettings::getMinPlayers()
+int GameFiltersSettings::getMinPlayers() const
 {
     QVariant previous = getValue("min_players");
     return previous == QVariant() ? 1 : previous.toInt();
@@ -130,7 +130,7 @@ void GameFiltersSettings::setMaxPlayers(int max)
     setValue(max, "max_players");
 }
 
-int GameFiltersSettings::getMaxPlayers()
+int GameFiltersSettings::getMaxPlayers() const
 {
     QVariant previous = getValue("max_players");
     return previous == QVariant() ? 99 : previous.toInt();
@@ -141,7 +141,7 @@ void GameFiltersSettings::setMaxGameAge(const QTime &maxGameAge)
     setValue(maxGameAge, "max_game_age_time");
 }
 
-QTime GameFiltersSettings::getMaxGameAge()
+QTime GameFiltersSettings::getMaxGameAge() const
 {
     QVariant previous = getValue("max_game_age_time");
     return previous.toTime();
@@ -157,7 +157,7 @@ void GameFiltersSettings::setGameHashedTypeEnabled(QString gametypeHASHED, bool
     setValue(enabled, gametypeHASHED);
 }
 
-bool GameFiltersSettings::isGameTypeEnabled(QString gametype)
+bool GameFiltersSettings::isGameTypeEnabled(QString gametype) const
 {
     QVariant previous = getValue("game_type/" + hashGameType(gametype));
     return previous == QVariant() ? false : previous.toBool();
@@ -168,7 +168,7 @@ void GameFiltersSettings::setShowOnlyIfSpectatorsCanWatch(bool show)
     setValue(show, "show_only_if_spectators_can_watch");
 }
 
-bool GameFiltersSettings::isShowOnlyIfSpectatorsCanWatch()
+bool GameFiltersSettings::isShowOnlyIfSpectatorsCanWatch() const
 {
     QVariant previous = getValue("show_only_if_spectators_can_watch");
     return previous == QVariant() ? false : previous.toBool();
@@ -179,7 +179,7 @@ void GameFiltersSettings::setShowSpectatorPasswordProtected(bool show)
     setValue(show, "show_spectator_password_protected");
 }
 
-bool GameFiltersSettings::isShowSpectatorPasswordProtected()
+bool GameFiltersSettings::isShowSpectatorPasswordProtected() const
 {
     QVariant previous = getValue("show_spectator_password_protected");
     return previous == QVariant() ? false : previous.toBool();
@@ -190,7 +190,7 @@ void GameFiltersSettings::setShowOnlyIfSpectatorsCanChat(bool show)
     setValue(show, "show_only_if_spectators_can_chat");
 }
 
-bool GameFiltersSettings::isShowOnlyIfSpectatorsCanChat()
+bool GameFiltersSettings::isShowOnlyIfSpectatorsCanChat() const
 {
     QVariant previous = getValue("show_only_if_spectators_can_chat");
     return previous == QVariant() ? false : previous.toBool();
@@ -201,7 +201,7 @@ void GameFiltersSettings::setShowOnlyIfSpectatorsCanSeeHands(bool show)
     setValue(show, "show_only_if_spectators_can_see_hands");
 }
 
-bool GameFiltersSettings::isShowOnlyIfSpectatorsCanSeeHands()
+bool GameFiltersSettings::isShowOnlyIfSpectatorsCanSeeHands() const
 {
     QVariant previous = getValue("show_only_if_spectators_can_see_hands");
     return previous == QVariant() ? false : previous.toBool();
diff --git a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
index 45e9b7441..c0e60551a 100644
--- a/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/game_filters_settings.h
@@ -16,23 +16,23 @@ class GameFiltersSettings : public SettingsManager
     friend class SettingsCache;
 
 public:
-    bool isHideBuddiesOnlyGames();
-    bool isHideFullGames();
-    bool isHideGamesThatStarted();
-    bool isHidePasswordProtectedGames();
-    bool isHideIgnoredUserGames();
-    bool isHideNotBuddyCreatedGames();
-    bool isHideOpenDecklistGames();
-    QString getGameNameFilter();
-    QStringList getCreatorNameFilters();
-    int getMinPlayers();
-    int getMaxPlayers();
-    QTime getMaxGameAge();
-    bool isGameTypeEnabled(QString gametype);
-    bool isShowOnlyIfSpectatorsCanWatch();
-    bool isShowSpectatorPasswordProtected();
-    bool isShowOnlyIfSpectatorsCanChat();
-    bool isShowOnlyIfSpectatorsCanSeeHands();
+    bool isHideBuddiesOnlyGames() const;
+    bool isHideFullGames() const;
+    bool isHideGamesThatStarted() const;
+    bool isHidePasswordProtectedGames() const;
+    bool isHideIgnoredUserGames() const;
+    bool isHideNotBuddyCreatedGames() const;
+    bool isHideOpenDecklistGames() const;
+    QString getGameNameFilter() const;
+    QStringList getCreatorNameFilters() const;
+    int getMinPlayers() const;
+    int getMaxPlayers() const;
+    QTime getMaxGameAge() const;
+    bool isGameTypeEnabled(QString gametype) const;
+    bool isShowOnlyIfSpectatorsCanWatch() const;
+    bool isShowSpectatorPasswordProtected() const;
+    bool isShowOnlyIfSpectatorsCanChat() const;
+    bool isShowOnlyIfSpectatorsCanSeeHands() const;
 
     void setHideBuddiesOnlyGames(bool hide);
     void setHideIgnoredUserGames(bool hide);
@@ -56,8 +56,6 @@ public:
 private:
     explicit GameFiltersSettings(const QString &settingPath, QObject *parent = nullptr);
     GameFiltersSettings(const GameFiltersSettings & /*other*/);
-
-    [[nodiscard]] QString hashGameType(const QString &gameType) const;
 };
 
 #endif // GAMEFILTERSSETTINGS_H
diff --git a/libcockatrice_settings/libcockatrice/settings/layouts_settings.cpp b/libcockatrice_settings/libcockatrice/settings/layouts_settings.cpp
index f7704cbc7..e914dc2d8 100644
--- a/libcockatrice_settings/libcockatrice/settings/layouts_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/layouts_settings.cpp
@@ -23,12 +23,12 @@ void LayoutsSettings::setMainWindowGeometry(const QByteArray &value)
     setValue(value, GEOMETRY_PROP, GROUP_MAIN_WINDOW);
 }
 
-QByteArray LayoutsSettings::getMainWindowGeometry()
+QByteArray LayoutsSettings::getMainWindowGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_MAIN_WINDOW).toByteArray();
 }
 
-QByteArray LayoutsSettings::getDeckEditorLayoutState()
+QByteArray LayoutsSettings::getDeckEditorLayoutState() const
 {
     return getValue(STATE_PROP, GROUP_DECK_EDITOR).toByteArray();
 }
@@ -38,7 +38,7 @@ void LayoutsSettings::setDeckEditorLayoutState(const QByteArray &value)
     setValue(value, STATE_PROP, GROUP_DECK_EDITOR);
 }
 
-QByteArray LayoutsSettings::getDeckEditorGeometry()
+QByteArray LayoutsSettings::getDeckEditorGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_DECK_EDITOR).toByteArray();
 }
@@ -48,7 +48,7 @@ void LayoutsSettings::setDeckEditorGeometry(const QByteArray &value)
     setValue(value, GEOMETRY_PROP, GROUP_DECK_EDITOR);
 }
 
-QByteArray LayoutsSettings::getVisualDeckEditorLayoutState()
+QByteArray LayoutsSettings::getVisualDeckEditorLayoutState() const
 {
     return getValue(STATE_PROP, GROUP_VISUAL_DECK_EDITOR).toByteArray();
 }
@@ -58,7 +58,7 @@ void LayoutsSettings::setVisualDeckEditorLayoutState(const QByteArray &value)
     setValue(value, STATE_PROP, GROUP_VISUAL_DECK_EDITOR);
 }
 
-QByteArray LayoutsSettings::getVisualDeckEditorGeometry()
+QByteArray LayoutsSettings::getVisualDeckEditorGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_VISUAL_DECK_EDITOR).toByteArray();
 }
@@ -68,7 +68,7 @@ void LayoutsSettings::setVisualDeckEditorGeometry(const QByteArray &value)
     setValue(value, GEOMETRY_PROP, GROUP_VISUAL_DECK_EDITOR);
 }
 
-QByteArray LayoutsSettings::getDeckEditorDbHeaderState()
+QByteArray LayoutsSettings::getDeckEditorDbHeaderState() const
 {
     return getValue(STATE_PROP, GROUP_DECK_EDITOR_DB, "header").toByteArray();
 }
@@ -78,7 +78,7 @@ void LayoutsSettings::setDeckEditorDbHeaderState(const QByteArray &value)
     setValue(value, STATE_PROP, GROUP_DECK_EDITOR_DB, "header");
 }
 
-QByteArray LayoutsSettings::getSetsDialogHeaderState()
+QByteArray LayoutsSettings::getSetsDialogHeaderState() const
 {
     return getValue(STATE_PROP, GROUP_SETS_DIALOG, "header").toByteArray();
 }
@@ -93,7 +93,7 @@ void LayoutsSettings::setSetsDialogGeometry(const QByteArray &value)
     setValue(value, GEOMETRY_PROP, GROUP_SETS_DIALOG);
 }
 
-QByteArray LayoutsSettings::getSetsDialogGeometry()
+QByteArray LayoutsSettings::getSetsDialogGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_SETS_DIALOG).toByteArray();
 }
@@ -103,7 +103,7 @@ void LayoutsSettings::setTokenDialogGeometry(const QByteArray &value)
     setValue(value, GEOMETRY_PROP, GROUP_TOKEN_DIALOG);
 }
 
-QByteArray LayoutsSettings::getTokenDialogGeometry()
+QByteArray LayoutsSettings::getTokenDialogGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_TOKEN_DIALOG).toByteArray();
 }
@@ -118,12 +118,12 @@ void LayoutsSettings::setGamePlayAreaState(const QByteArray &value)
     setValue(value, STATE_PROP, GROUP_GAME_PLAY_AREA);
 }
 
-QByteArray LayoutsSettings::getGamePlayAreaLayoutState()
+QByteArray LayoutsSettings::getGamePlayAreaLayoutState() const
 {
     return getValue(STATE_PROP, GROUP_GAME_PLAY_AREA).toByteArray();
 }
 
-QByteArray LayoutsSettings::getGamePlayAreaGeometry()
+QByteArray LayoutsSettings::getGamePlayAreaGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_GAME_PLAY_AREA).toByteArray();
 }
@@ -138,12 +138,12 @@ void LayoutsSettings::setReplayPlayAreaState(const QByteArray &value)
     setValue(value, STATE_PROP, GROUP_REPLAY_PLAY_AREA);
 }
 
-QByteArray LayoutsSettings::getReplayPlayAreaLayoutState()
+QByteArray LayoutsSettings::getReplayPlayAreaLayoutState() const
 {
     return getValue(STATE_PROP, GROUP_REPLAY_PLAY_AREA).toByteArray();
 }
 
-QByteArray LayoutsSettings::getReplayPlayAreaGeometry()
+QByteArray LayoutsSettings::getReplayPlayAreaGeometry() const
 {
     return getValue(GEOMETRY_PROP, GROUP_REPLAY_PLAY_AREA).toByteArray();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/layouts_settings.h b/libcockatrice_settings/libcockatrice/settings/layouts_settings.h
index cab9a456e..5353ce15a 100644
--- a/libcockatrice_settings/libcockatrice/settings/layouts_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/layouts_settings.h
@@ -36,24 +36,24 @@ public:
     void setReplayPlayAreaGeometry(const QByteArray &value);
     void setReplayPlayAreaState(const QByteArray &value);
 
-    QByteArray getMainWindowGeometry();
+    QByteArray getMainWindowGeometry() const;
 
-    QByteArray getDeckEditorLayoutState();
-    QByteArray getDeckEditorGeometry();
+    QByteArray getDeckEditorLayoutState() const;
+    QByteArray getDeckEditorGeometry() const;
 
-    QByteArray getVisualDeckEditorLayoutState();
-    QByteArray getVisualDeckEditorGeometry();
+    QByteArray getVisualDeckEditorLayoutState() const;
+    QByteArray getVisualDeckEditorGeometry() const;
 
-    QByteArray getDeckEditorDbHeaderState();
-    QByteArray getSetsDialogHeaderState();
-    QByteArray getSetsDialogGeometry();
-    QByteArray getTokenDialogGeometry();
+    QByteArray getDeckEditorDbHeaderState() const;
+    QByteArray getSetsDialogHeaderState() const;
+    QByteArray getSetsDialogGeometry() const;
+    QByteArray getTokenDialogGeometry() const;
 
-    QByteArray getGamePlayAreaLayoutState();
-    QByteArray getGamePlayAreaGeometry();
+    QByteArray getGamePlayAreaLayoutState() const;
+    QByteArray getGamePlayAreaGeometry() const;
 
-    QByteArray getReplayPlayAreaLayoutState();
-    QByteArray getReplayPlayAreaGeometry();
+    QByteArray getReplayPlayAreaLayoutState() const;
+    QByteArray getReplayPlayAreaGeometry() const;
 signals:
 
 public slots:
diff --git a/libcockatrice_settings/libcockatrice/settings/message_settings.cpp b/libcockatrice_settings/libcockatrice/settings/message_settings.cpp
index 761c94484..50da39df6 100644
--- a/libcockatrice_settings/libcockatrice/settings/message_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/message_settings.cpp
@@ -5,12 +5,12 @@ MessageSettings::MessageSettings(const QString &settingPath, QObject *parent)
 {
 }
 
-QString MessageSettings::getMessageAt(int index)
+QString MessageSettings::getMessageAt(int index) const
 {
     return getValue(QString("msg%1").arg(index)).toString();
 }
 
-int MessageSettings::getCount()
+int MessageSettings::getCount() const
 {
     return getValue("count").toInt();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/message_settings.h b/libcockatrice_settings/libcockatrice/settings/message_settings.h
index 265c455e1..ec70027af 100644
--- a/libcockatrice_settings/libcockatrice/settings/message_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/message_settings.h
@@ -15,8 +15,8 @@ class MessageSettings : public SettingsManager
     friend class SettingsCache;
 
 public:
-    int getCount();
-    QString getMessageAt(int index);
+    int getCount() const;
+    QString getMessageAt(int index) const;
 
     void setCount(int count);
     void setMessageAt(int index, QString message);
diff --git a/libcockatrice_settings/libcockatrice/settings/recents_settings.cpp b/libcockatrice_settings/libcockatrice/settings/recents_settings.cpp
index e64dd7494..76bc4069e 100644
--- a/libcockatrice_settings/libcockatrice/settings/recents_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/recents_settings.cpp
@@ -7,7 +7,7 @@ RecentsSettings::RecentsSettings(const QString &settingPath, QObject *parent)
 {
 }
 
-QStringList RecentsSettings::getRecentlyOpenedDeckPaths()
+QStringList RecentsSettings::getRecentlyOpenedDeckPaths() const
 {
     return getValue("deckpaths").toStringList();
 }
@@ -31,7 +31,7 @@ void RecentsSettings::updateRecentlyOpenedDeckPaths(const QString &deckPath)
     emit recentlyOpenedDeckPathsChanged();
 }
 
-QString RecentsSettings::getLatestDeckDirPath()
+QString RecentsSettings::getLatestDeckDirPath() const
 {
     return getValue("latestDeckDir", "dirs").toString();
 }
diff --git a/libcockatrice_settings/libcockatrice/settings/recents_settings.h b/libcockatrice_settings/libcockatrice/settings/recents_settings.h
index 23c8f1a9f..3aebff334 100644
--- a/libcockatrice_settings/libcockatrice/settings/recents_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/recents_settings.h
@@ -18,11 +18,11 @@ class RecentsSettings : public SettingsManager
     RecentsSettings(const RecentsSettings & /*other*/);
 
 public:
-    QStringList getRecentlyOpenedDeckPaths();
+    QStringList getRecentlyOpenedDeckPaths() const;
     void clearRecentlyOpenedDeckPaths();
     void updateRecentlyOpenedDeckPaths(const QString &deckPath);
 
-    QString getLatestDeckDirPath();
+    QString getLatestDeckDirPath() const;
     void setLatestDeckDirPath(const QString &dirPath);
 
 signals:
diff --git a/libcockatrice_settings/libcockatrice/settings/servers_settings.cpp b/libcockatrice_settings/libcockatrice/settings/servers_settings.cpp
index 5f69f47c9..0140182be 100644
--- a/libcockatrice_settings/libcockatrice/settings/servers_settings.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/servers_settings.cpp
@@ -13,7 +13,7 @@ void ServersSettings::setPreviousHostLogin(int previous)
     setValue(previous, "previoushostlogin");
 }
 
-int ServersSettings::getPreviousHostLogin()
+int ServersSettings::getPreviousHostLogin() const
 {
     QVariant previous = getValue("previoushostlogin");
     return previous == QVariant() ? 1 : previous.toInt();
@@ -24,7 +24,7 @@ void ServersSettings::setPreviousHostList(QStringList list)
     setValue(list, "previoushosts");
 }
 
-QStringList ServersSettings::getPreviousHostList()
+QStringList ServersSettings::getPreviousHostList() const
 {
     return getValue("previoushosts").toStringList();
 }
@@ -48,13 +48,13 @@ QString ServersSettings::getSite(QString defaultSite)
     return site == QVariant() ? std::move(defaultSite) : site.toString();
 }
 
-QString ServersSettings::getPrevioushostName()
+QString ServersSettings::getPrevioushostName() const
 {
     QVariant value = getValue("previoushostName");
     return value == QVariant() ? "Rooster Ranges" : value.toString();
 }
 
-int ServersSettings::getPrevioushostindex(const QString &saveName)
+int ServersSettings::getPrevioushostindex(const QString &saveName) const
 {
     int size = getValue("totalServers", "server", "server_details").toInt();
 
@@ -65,14 +65,14 @@ int ServersSettings::getPrevioushostindex(const QString &saveName)
     return -1;
 }
 
-QString ServersSettings::getHostname(QString defaultHost)
+QString ServersSettings::getHostname(QString defaultHost) const
 {
     int index = getPrevioushostindex(getPrevioushostName());
     QVariant hostname = getValue(QString("server%1").arg(index), "server", "server_details");
     return hostname == QVariant() ? std::move(defaultHost) : hostname.toString();
 }
 
-QString ServersSettings::getPort(QString defaultPort)
+QString ServersSettings::getPort(QString defaultPort) const
 {
     int index = getPrevioushostindex(getPrevioushostName());
     QVariant port = getValue(QString("port%1").arg(index), "server", "server_details");
@@ -80,7 +80,7 @@ QString ServersSettings::getPort(QString defaultPort)
     return port == QVariant() ? std::move(defaultPort) : port.toString();
 }
 
-QString ServersSettings::getPlayerName(QString defaultName)
+QString ServersSettings::getPlayerName(QString defaultName) const
 {
     int index = getPrevioushostindex(getPrevioushostName());
     QVariant name = getValue(QString("username%1").arg(index), "server", "server_details");
@@ -98,7 +98,7 @@ QString ServersSettings::getPassword()
     return QString();
 }
 
-bool ServersSettings::getSavePassword()
+bool ServersSettings::getSavePassword() const
 {
     int index = getPrevioushostindex(getPrevioushostName());
     bool save = getValue(QString("savePassword%1").arg(index), "server", "server_details").toBool();
@@ -110,7 +110,7 @@ void ServersSettings::setAutoConnect(int autoconnect)
     setValue(autoconnect, "auto_connect");
 }
 
-int ServersSettings::getAutoConnect()
+int ServersSettings::getAutoConnect() const
 {
     QVariant autoconnect = getValue("auto_connect");
     return autoconnect == QVariant() ? 0 : autoconnect.toInt();
@@ -121,7 +121,7 @@ void ServersSettings::setFPHostName(QString hostname)
     setValue(hostname, "fphostname");
 }
 
-QString ServersSettings::getFPHostname(QString defaultHost)
+QString ServersSettings::getFPHostname(QString defaultHost) const
 {
     QVariant hostname = getValue("fphostname");
     return hostname == QVariant() ? std::move(defaultHost) : hostname.toString();
@@ -132,7 +132,7 @@ void ServersSettings::setFPPort(QString port)
     setValue(port, "fpport");
 }
 
-QString ServersSettings::getFPPort(QString defaultPort)
+QString ServersSettings::getFPPort(QString defaultPort) const
 {
     QVariant port = getValue("fpport");
     return port == QVariant() ? std::move(defaultPort) : port.toString();
@@ -143,7 +143,7 @@ void ServersSettings::setFPPlayerName(QString playerName)
     setValue(playerName, "fpplayername");
 }
 
-QString ServersSettings::getFPPlayerName(QString defaultName)
+QString ServersSettings::getFPPlayerName(QString defaultName) const
 {
     QVariant name = getValue("fpplayername");
     return name == QVariant() ? std::move(defaultName) : name.toString();
@@ -154,7 +154,7 @@ void ServersSettings::setClearDebugLogStatus(bool abIsChecked)
     setValue(abIsChecked, "save_debug_log");
 }
 
-bool ServersSettings::getClearDebugLogStatus(bool abDefaultValue)
+bool ServersSettings::getClearDebugLogStatus(bool abDefaultValue) const
 {
     QVariant cbFlushLog = getValue("save_debug_log");
     return cbFlushLog == QVariant() ? abDefaultValue : cbFlushLog.toBool();
diff --git a/libcockatrice_settings/libcockatrice/settings/servers_settings.h b/libcockatrice_settings/libcockatrice/settings/servers_settings.h
index 4d92c4647..22603a356 100644
--- a/libcockatrice_settings/libcockatrice/settings/servers_settings.h
+++ b/libcockatrice_settings/libcockatrice/settings/servers_settings.h
@@ -22,21 +22,21 @@ class ServersSettings : public SettingsManager
     friend class SettingsCache;
 
 public:
-    int getPreviousHostLogin();
-    int getPrevioushostindex(const QString &);
-    QStringList getPreviousHostList();
-    QString getPrevioushostName();
-    QString getHostname(QString defaultHost = SERVERSETTINGS_DEFAULT_HOST);
-    QString getPort(QString defaultPort = SERVERSETTINGS_DEFAULT_PORT);
-    QString getPlayerName(QString defaultName = "");
-    QString getFPHostname(QString defaultHost = SERVERSETTINGS_DEFAULT_HOST);
-    QString getFPPort(QString defaultPort = SERVERSETTINGS_DEFAULT_PORT);
-    QString getFPPlayerName(QString defaultName = "");
+    int getPreviousHostLogin() const;
+    int getPrevioushostindex(const QString &) const;
+    QStringList getPreviousHostList() const;
+    QString getPrevioushostName() const;
+    QString getHostname(QString defaultHost = SERVERSETTINGS_DEFAULT_HOST) const;
+    QString getPort(QString defaultPort = SERVERSETTINGS_DEFAULT_PORT) const;
+    QString getPlayerName(QString defaultName = "") const;
+    QString getFPHostname(QString defaultHost = SERVERSETTINGS_DEFAULT_HOST) const;
+    QString getFPPort(QString defaultPort = SERVERSETTINGS_DEFAULT_PORT) const;
+    QString getFPPlayerName(QString defaultName = "") const;
     QString getPassword();
     QString getSaveName(QString defaultname = "");
     QString getSite(QString defaultName = "");
-    bool getSavePassword();
-    int getAutoConnect();
+    bool getSavePassword() const;
+    int getAutoConnect() const;
 
     void setPreviousHostLogin(int previous);
     void setPrevioushostName(const QString &);
@@ -67,7 +67,7 @@ public:
                                          QString port = QString(),
                                          QString site = QString());
     void setClearDebugLogStatus(bool abIsChecked);
-    bool getClearDebugLogStatus(bool abDefaultValue);
+    bool getClearDebugLogStatus(bool abDefaultValue) const;
 
 private:
     explicit ServersSettings(const QString &settingPath, QObject *parent = nullptr);
diff --git a/libcockatrice_settings/libcockatrice/settings/settings_manager.cpp b/libcockatrice_settings/libcockatrice/settings/settings_manager.cpp
index 3f3deb638..2d4f1c441 100644
--- a/libcockatrice_settings/libcockatrice/settings/settings_manager.cpp
+++ b/libcockatrice_settings/libcockatrice/settings/settings_manager.cpp
@@ -108,7 +108,7 @@ void SettingsManager::deleteValue(const QString &name, const QString &group, con
     }
 }
 
-QVariant SettingsManager::getValue(const QString &name)
+QVariant SettingsManager::getValue(const QString &name) const
 {
     auto settings = getSettings();
 
@@ -133,7 +133,7 @@ QVariant SettingsManager::getValue(const QString &name)
     return value;
 }
 
-QVariant SettingsManager::getValue(const QString &name, const QString &group, const QString &subGroup)
+QVariant SettingsManager::getValue(const QString &name, const QString &group, const QString &subGroup) const
 {
     auto settings = getSettings();
 
diff --git a/libcockatrice_settings/libcockatrice/settings/settings_manager.h b/libcockatrice_settings/libcockatrice/settings/settings_manager.h
index 18abb8dbf..ad828f089 100644
--- a/libcockatrice_settings/libcockatrice/settings/settings_manager.h
+++ b/libcockatrice_settings/libcockatrice/settings/settings_manager.h
@@ -19,8 +19,8 @@ public:
                              const QString &defaultGroup = QString(),
                              const QString &defaultSubGroup = QString(),
                              QObject *parent = nullptr);
-    QVariant getValue(const QString &name);
-    QVariant getValue(const QString &name, const QString &group, const QString &subGroup = QString());
+    QVariant getValue(const QString &name) const;
+    QVariant getValue(const QString &name, const QString &group, const QString &subGroup = QString()) const;
     void sync();
 
 protected: