feat: add UImGui editor drawer

Editor/Editors/UImGuiEditor.cs

@@ -0,0 +1,107 @@
+using System.Text;
+using UImGui.Platform;
+using UnityEditor;
+using UnityEngine;
+
+namespace UImGui.Editor
+{
+	[CustomEditor(typeof(UImGui))]
+	internal class UImGuiEditor : UnityEditor.Editor
+	{
+		private SerializedProperty _doGlobalLayout;
+		private SerializedProperty _camera;
+		private SerializedProperty _renderFeature;
+		private SerializedProperty _renderer;
+		private SerializedProperty _platform;
+		private SerializedProperty _initialConfiguration;
+		private SerializedProperty _fontAtlasConfiguration;
+		private SerializedProperty _iniSettings;
+		private SerializedProperty _shaders;
+		private SerializedProperty _style;
+		private SerializedProperty _cursorShapes;
+		private readonly StringBuilder _messages = new StringBuilder();
+
+		public override void OnInspectorGUI()
+		{
+			serializedObject.Update();
+
+			CheckRequirements();
+
+			EditorGUI.BeginChangeCheck();
+
+			EditorGUILayout.PropertyField(_doGlobalLayout);
+			if (RenderUtility.IsUsingURP())
+			{
+				EditorGUILayout.PropertyField(_renderFeature);
+			}
+
+			EditorGUILayout.PropertyField(_camera);
+			EditorGUILayout.PropertyField(_renderer);
+			EditorGUILayout.PropertyField(_platform);
+			EditorGUILayout.PropertyField(_initialConfiguration);
+			EditorGUILayout.PropertyField(_fontAtlasConfiguration);
+			EditorGUILayout.PropertyField(_iniSettings);
+			EditorGUILayout.PropertyField(_shaders);
+			EditorGUILayout.PropertyField(_style);
+			EditorGUILayout.PropertyField(_cursorShapes);
+
+			bool changed = EditorGUI.EndChangeCheck();
+			if (changed)
+			{
+				serializedObject.ApplyModifiedProperties();
+			}
+
+			if (!Application.isPlaying) return;
+
+			bool reload = GUILayout.Button("Reload");
+			if (changed || reload)
+			{
+				(target as UImGui)?.Reload();
+			}
+		}
+
+		private void OnEnable()
+		{
+			_doGlobalLayout = serializedObject.FindProperty("_doGlobalLayout");
+			_camera = serializedObject.FindProperty("_camera");
+			_renderFeature = serializedObject.FindProperty("_renderFeature");
+			_renderer = serializedObject.FindProperty("_rendererType");
+			_platform = serializedObject.FindProperty("_platformType");
+			_initialConfiguration = serializedObject.FindProperty("_initialConfiguration");
+			_fontAtlasConfiguration = serializedObject.FindProperty("_fontAtlasConfiguration");
+			_iniSettings = serializedObject.FindProperty("_iniSettings");
+			_shaders = serializedObject.FindProperty("_shaders");
+			_style = serializedObject.FindProperty("_style");
+			_cursorShapes = serializedObject.FindProperty("_cursorShapes");
+		}
+
+		private void CheckRequirements()
+		{
+			_messages.Clear();
+			if (_camera.objectReferenceValue == null)
+			{
+				_messages.AppendLine("Must assign a Camera.");
+			}
+
+			if (RenderUtility.IsUsingURP() && _renderFeature.objectReferenceValue == null)
+			{
+				_messages.AppendLine("Must assign a RenderFeature when using the URP.");
+			}
+
+			if (!PlatformUtility.IsAvailable((InputType)_platform.enumValueIndex))
+			{
+				_messages.AppendLine("Platform not available.");
+			}
+			// TODO: Warning for if(UIOConfig.ImGuiConfig has NavEnableSetMousePos and Input != InputSystem) wont work.
+			//else if ((InputType)_platform.enumValueIndex == InputType.InputSystem && (UIOConfig)_initialConfiguration.)
+			//{
+			//	_messages.AppendLine("Will not work NavEnableSetPos with InputManager");
+			//}
+
+			if (_messages.Length > 0)
+			{
+				EditorGUILayout.HelpBox(_messages.ToString(), MessageType.Error);
+			}
+		}
+	}
+}