feat: add SettingWidget::dropdown support for int style enums (#6303)

src/common/ChatterinoSetting.hpp

@@ -62,6 +62,9 @@ using StringSetting = ChatterinoSetting<std::string>;
 using QStringSetting = ChatterinoSetting<QString>;
 using QSizeSetting = ChatterinoSetting<QSize>;
 
+/// Accepts any enum and saves the enum value as an integer
+///
+/// e.g. for enum class {Foo = 2, Bar = 6}, Foo would be saved as 2 and Bar would be saved as 6
 template <typename Enum>
 class EnumSetting : public ChatterinoSetting<std::underlying_type_t<Enum>>
 {

src/common/LastMessageLineStyle.hpp

@@ -0,0 +1,16 @@
+#pragma once
+
+#include <QBrush>
+
+#include <type_traits>
+
+namespace chatterino {
+
+/// The values must always be castable to a Qt::BrushStyle
+// NOLINTNEXTLINE(performance-enum-size)
+enum class LastMessageLineStyle : std::underlying_type_t<Qt::BrushStyle> {
+    Solid = Qt::SolidPattern,
+    Dotted = Qt::VerPattern,
+};
+
+}  // namespace chatterino

src/common/ThumbnailPreviewMode.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <cstdint>
+#include <optional>
+#include <string_view>
+
+namespace chatterino {
+
+enum class ThumbnailPreviewMode : std::uint8_t {
+    DontShow,
+
+    AlwaysShow,
+
+    ShowOnShift,
+};
+
+constexpr std::optional<std::string_view> qmagicenumDisplayName(
+    ThumbnailPreviewMode value) noexcept
+{
+    switch (value)
+    {
+        case ThumbnailPreviewMode::DontShow:
+            return "Don't show";
+        case ThumbnailPreviewMode::AlwaysShow:
+            return "Always show";
+        case ThumbnailPreviewMode::ShowOnShift:
+            return "Hold shift";
+    }
+}
+
+}  // namespace chatterino