chore: import upstream snapshot with attribution

RunCat365/SpeedSource.cs

@@ -0,0 +1,62 @@
+// Copyright 2025 Takuto Nakamura
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+
+using RunCat365.Properties;
+using System.Diagnostics.CodeAnalysis;
+
+namespace RunCat365
+{
+    enum SpeedSource
+    {
+        CPU,
+        GPU,
+        Memory,
+    }
+
+    internal static class SpeedSourceExtension
+    {
+        internal static string GetLocalizedString(this SpeedSource speedSource)
+        {
+            return speedSource switch
+            {
+                SpeedSource.CPU => Strings.SystemInfo_CPU,
+                SpeedSource.GPU => Strings.SystemInfo_GPU,
+                SpeedSource.Memory => Strings.SystemInfo_Memory,
+                _ => "",
+            };
+        }
+
+        internal static bool TryParse([NotNullWhen(true)] string? value, out SpeedSource result)
+        {
+            SpeedSource? nullableResult = value switch
+            {
+                "CPU" => SpeedSource.CPU,
+                "GPU" => SpeedSource.GPU,
+                "Memory" => SpeedSource.Memory,
+                _ => null,
+            };
+
+            if (nullableResult is SpeedSource nonNullableResult)
+            {
+                result = nonNullableResult;
+                return true;
+            }
+            else
+            {
+                result = SpeedSource.CPU;
+                return false;
+            }
+        }
+    }
+}