yuzu/configuration/configure_input_player: Specify string conversions explicitly

Allows the player input configuration code to compile with implicit
string conversions disabled.

src/yuzu/configuration/configure_input_player.cpp

@@ -45,7 +45,7 @@ static QString GetKeyName(int key_code) {
     case Qt::Key_Alt:
         return QObject::tr("Alt");
     case Qt::Key_Meta:
-        return "";
+        return {};
     default:
         return QKeySequence(key_code).toString();
     }
@@ -65,46 +65,70 @@ static void SetAnalogButton(const Common::ParamPackage& input_param,
 static QString ButtonToText(const Common::ParamPackage& param) {
     if (!param.Has("engine")) {
         return QObject::tr("[not set]");
-    } else if (param.Get("engine", "") == "keyboard") {
+    }
+
+    if (param.Get("engine", "") == "keyboard") {
         return GetKeyName(param.Get("code", 0));
-    } else if (param.Get("engine", "") == "sdl") {
+    }
+
+    if (param.Get("engine", "") == "sdl") {
         if (param.Has("hat")) {
-            return QString(QObject::tr("Hat %1 %2"))
-                .arg(param.Get("hat", "").c_str(), param.Get("direction", "").c_str());
+            const QString hat_str = QString::fromStdString(param.Get("hat", ""));
+            const QString direction_str = QString::fromStdString(param.Get("direction", ""));
+
+            return QObject::tr("Hat %1 %2").arg(hat_str, direction_str);
         }
+
         if (param.Has("axis")) {
-            return QString(QObject::tr("Axis %1%2"))
-                .arg(param.Get("axis", "").c_str(), param.Get("direction", "").c_str());
+            const QString axis_str = QString::fromStdString(param.Get("axis", ""));
+            const QString direction_str = QString::fromStdString(param.Get("direction", ""));
+
+            return QObject::tr("Axis %1%2").arg(axis_str, direction_str);
         }
+
         if (param.Has("button")) {
-            return QString(QObject::tr("Button %1")).arg(param.Get("button", "").c_str());
+            const QString button_str = QString::fromStdString(param.Get("button", ""));
+
+            return QObject::tr("Button %1").arg(button_str);
         }
-        return QString();
-    } else {
-        return QObject::tr("[unknown]");
+
+        return {};
     }
-};
+
+    return QObject::tr("[unknown]");
+}
 
 static QString AnalogToText(const Common::ParamPackage& param, const std::string& dir) {
     if (!param.Has("engine")) {
         return QObject::tr("[not set]");
-    } else if (param.Get("engine", "") == "analog_from_button") {
+    }
+
+    if (param.Get("engine", "") == "analog_from_button") {
         return ButtonToText(Common::ParamPackage{param.Get(dir, "")});
-    } else if (param.Get("engine", "") == "sdl") {
+    }
+
+    if (param.Get("engine", "") == "sdl") {
         if (dir == "modifier") {
-            return QString(QObject::tr("[unused]"));
+            return QObject::tr("[unused]");
         }
 
         if (dir == "left" || dir == "right") {
-            return QString(QObject::tr("Axis %1")).arg(param.Get("axis_x", "").c_str());
-        } else if (dir == "up" || dir == "down") {
-            return QString(QObject::tr("Axis %1")).arg(param.Get("axis_y", "").c_str());
+            const QString axis_x_str = QString::fromStdString(param.Get("axis_x", ""));
+
+            return QObject::tr("Axis %1").arg(axis_x_str);
         }
-        return QString();
-    } else {
-        return QObject::tr("[unknown]");
+
+        if (dir == "up" || dir == "down") {
+            const QString axis_y_str = QString::fromStdString(param.Get("axis_y", ""));
+
+            return QObject::tr("Axis %1").arg(axis_y_str);
+        }
+
+        return {};
     }
-};
+
+    return QObject::tr("[unknown]");
+}
 
 ConfigureInputPlayer::ConfigureInputPlayer(QWidget* parent, std::size_t player_index, bool debug)
     : QDialog(parent), ui(std::make_unique<Ui::ConfigureInputPlayer>()), player_index(player_index),
@@ -351,7 +375,7 @@ void ConfigureInputPlayer::OnControllerButtonClick(int i) {
         return;
     controller_colors[i] = new_bg_color;
     controller_color_buttons[i]->setStyleSheet(
-        QString("QPushButton { background-color: %1 }").arg(controller_colors[i].name()));
+        QStringLiteral("QPushButton { background-color: %1 }").arg(controller_colors[i].name()));
 }
 
 void ConfigureInputPlayer::loadConfiguration() {
@@ -388,7 +412,8 @@ void ConfigureInputPlayer::loadConfiguration() {
 
     for (std::size_t i = 0; i < colors.size(); ++i) {
         controller_color_buttons[i]->setStyleSheet(
-            QString("QPushButton { background-color: %1 }").arg(controller_colors[i].name()));
+            QStringLiteral("QPushButton { background-color: %1 }")
+                .arg(controller_colors[i].name()));
     }
 }