Centralize legacy app preferences

src/app_core/app_preferences.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "foundation/result.h"
+
 #include <cstddef>
 #include <span>
 
@@ -44,6 +46,18 @@ struct StoredBooleanPreferencePlan {
     bool value = false;
 };
 
+class AppPreferenceServices {
+public:
+    virtual ~AppPreferenceServices() = default;
+
+    virtual void apply_ui_scale(const ScaleApplicationPlan& plan) = 0;
+    virtual void apply_viewport_scale(const ScaleApplicationPlan& plan) = 0;
+    virtual void apply_interface_direction(const InterfaceDirectionPlan& plan) = 0;
+    virtual void apply_vr_controllers_preference(const StoredBooleanPreferencePlan& plan) = 0;
+    virtual void apply_timelapse_preference(const TimelapsePreferencePlan& plan) = 0;
+    virtual void apply_canvas_cursor_mode(const StoredIntegerPreferencePlan& plan) = 0;
+};
+
 [[nodiscard]] constexpr ScaleApplicationPlan plan_ui_scale(
     float requested_scale,
     float display_density) noexcept
@@ -111,4 +125,55 @@ struct StoredBooleanPreferencePlan {
     return { mode };
 }
 
+[[nodiscard]] inline pp::foundation::Status execute_ui_scale_preference(
+    float requested_scale,
+    float display_density,
+    AppPreferenceServices& services)
+{
+    services.apply_ui_scale(plan_ui_scale(requested_scale, display_density));
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_viewport_scale_preference(
+    float requested_scale,
+    float display_density,
+    AppPreferenceServices& services)
+{
+    services.apply_viewport_scale(plan_viewport_scale(requested_scale, display_density));
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_interface_direction_preference(
+    bool right_to_left,
+    AppPreferenceServices& services)
+{
+    services.apply_interface_direction(plan_interface_direction(right_to_left));
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_vr_controllers_preference(
+    bool enabled,
+    AppPreferenceServices& services)
+{
+    services.apply_vr_controllers_preference(plan_vr_controllers_preference(enabled));
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_timelapse_preference(
+    bool enabled,
+    bool recording_running,
+    AppPreferenceServices& services)
+{
+    services.apply_timelapse_preference(plan_timelapse_preference(enabled, recording_running));
+    return pp::foundation::Status::success();
+}
+
+[[nodiscard]] inline pp::foundation::Status execute_canvas_cursor_mode_preference(
+    int mode,
+    AppPreferenceServices& services)
+{
+    services.apply_canvas_cursor_mode(plan_canvas_cursor_mode(mode));
+    return pp::foundation::Status::success();
+}
+
 }