Initial upload

Editor/Helpers/MaterialEditorHelpers.cs

@@ -0,0 +1,125 @@
+using System;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+namespace Misaki.ShaderGUI
+{
+    public static class MaterialEditorHelpers
+    {
+        /// <summary>
+        /// Gets all the materials from the material editor.
+        /// </summary>
+        /// <param name="editor">The material editor.</param>
+        /// <returns>All the materials from the material editor.</returns>
+        public static IEnumerable<Material> GetMaterials(this MaterialEditor editor)
+        {
+            foreach (var target in editor.targets)
+            {
+                if (target is Material material)
+                {
+                    yield return material;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Sets a keyword on all the materials in the material editor.
+        /// </summary>
+        /// <param name="editor">The material editor.</param>
+        /// <param name="keywordName">The name of the keyword</param>
+        /// <param name="value">The value of the keyword.</param>
+        public static void SetKeyword(this MaterialEditor editor, string keywordName, bool value)
+        {
+            foreach (var material in editor.GetMaterials())
+            {
+                material.SetKeyword(new LocalKeyword(material.shader, keywordName), value);
+            }
+        }
+
+        /// <summary>
+        /// Applies a change to all the materials in the material editor.
+        /// </summary>
+        /// <param name="editor">The material editor.</param>
+        /// <param name="predicate">The predicate to determine if the change should be applied to the material.</param>
+        /// <param name="changeAction">The action to apply the change.</param>
+        public static void ApplyChange(this MaterialEditor editor, Predicate<Material> predicate, Action changeAction)
+        {
+            foreach (var material in editor.GetMaterials())
+            {
+                if (!predicate(material))
+                {
+                    continue;
+                }
+
+                changeAction();
+                editor.RegisterPropertyChangeUndo(material.name);
+            }
+        }
+
+        /// <summary>
+        /// Applies a change to all the materials in the material editor.
+        /// </summary>
+        /// <param name="editor">The material editor.</param>
+        /// <param name="changeAction">The action to apply the change.</param>
+        public static void ApplyChange(this MaterialEditor editor, Action<Material> changeAction)
+        {
+            foreach (var material in editor.GetMaterials())
+            {
+                changeAction(material);
+                editor.RegisterPropertyChangeUndo(material.name);
+            }
+        }
+
+        #region GUI
+
+        /// <summary>
+        /// Draws a single line texture property with a keyword toggle.
+        /// </summary>
+        /// <param name="editor">The material editor.</param>
+        /// <param name="label">The label of the texture property.</param>
+        /// <param name="textureProperty">The texture property to draw.</param>
+        /// <returns>True if the texture property is not null. Otherwise, false.</returns>
+        public static bool KeywordTexturePropertySingleLine(this MaterialEditor editor, GUIContent label, MaterialProperty textureProperty)
+        {
+            return KeywordTexturePropertySingleLine(editor, label, textureProperty, null, null);
+        }
+
+        /// <summary>
+        /// Draws a single line texture property with a keyword toggle.
+        /// </summary>
+        /// <param name="editor">The material editor. </param>
+        /// <param name="label">The label of the texture property.</param>
+        /// <param name="textureProperty">The texture property to draw.</param>
+        /// <param name="extraProperty">The first extra property to draw.</param>
+        /// <returns>True if the texture property is not null. Otherwise, false.</returns>
+        public static bool KeywordTexturePropertySingleLine(this MaterialEditor editor, GUIContent label, MaterialProperty textureProperty, MaterialProperty extraProperty)
+        {
+            return KeywordTexturePropertySingleLine(editor, label, textureProperty, extraProperty, null);
+        }
+
+        /// <summary>
+        /// Draws a single line texture property with a keyword toggle.
+        /// </summary>
+        /// <param name="editor">The material editor. </param>
+        /// <param name="label">The label of the texture property.</param>
+        /// <param name="textureProperty">The texture property to draw.</param>
+        /// <param name="extraProperty1">The first extra property to draw.</param>
+        /// <param name="extraProperty2">The second extra property to draw.</param>
+        /// <returns>True if the texture property is not null. Otherwise, false.</returns>
+        public static bool KeywordTexturePropertySingleLine(this MaterialEditor editor, GUIContent label, MaterialProperty textureProperty, MaterialProperty extraProperty1, MaterialProperty extraProperty2)
+        {
+            EditorGUI.BeginChangeCheck();
+            editor.TexturePropertySingleLine(label, textureProperty, extraProperty1, extraProperty2);
+            if (EditorGUI.EndChangeCheck())
+            {
+                editor.SetKeyword(textureProperty.name.ToUpper(), textureProperty.textureValue != null);
+            }
+
+            return textureProperty.textureValue != null;
+        }
+
+        #endregion
+    }
+}