Add GetIcon helper

Dalamud/Data/DataManager.cs

@@ -6,7 +6,9 @@ using System.IO;
 using System.Net;
 using System.Net.Http;
 using System.Threading.Tasks;
+using Dalamud.Data.LuminaExtensions;
 using Lumina.Data;
+using Lumina.Data.Files;
 using Lumina.Excel;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
@@ -41,6 +43,8 @@ namespace Dalamud.Data
 
         private ClientLanguage language;
 
+        private const string IconFileFormat = "ui/icon/{0:D3}000/{1}{2:D6}.tex";
+
         public DataManager(ClientLanguage language)
         {
             // Set up default values so plugins do not null-reference when data is being loaded.
@@ -131,6 +135,53 @@ namespace Dalamud.Data
             return this.gameData.Repositories.TryGetValue(filePath.Repository, out repository) ? repository.GetFile<T>(filePath.Category, filePath) : default(T);
         }
 
+        /// <summary>
+        /// Get a <see cref="TexFile"/> containing the icon with the given ID.
+        /// </summary>
+        /// <param name="iconId">The icon ID.</param>
+        /// <returns>The <see cref="TexFile"/> containing the icon.</returns>
+        public TexFile GetIcon(int iconId)
+        {
+            return GetIcon(string.Empty, iconId);
+        }
+
+        /// <summary>
+        /// Get a <see cref="TexFile"/> containing the icon with the given ID, of the given language.
+        /// </summary>
+        /// <param name="iconLanguage">The requested language.</param>
+        /// <param name="iconId">The icon ID.</param>
+        /// <returns>The <see cref="TexFile"/> containing the icon.</returns>
+        public TexFile GetIcon(Language iconLanguage, int iconId)
+        {
+            var type = iconLanguage.GetCode();
+            if (type.Length > 0)
+                type += "/";
+            return GetIcon(type, iconId);
+        }
+
+        /// <summary>
+        /// Get a <see cref="TexFile"/> containing the icon with the given ID, of the given type.
+        /// </summary>
+        /// <param name="type">The type of the icon (e.g. 'hq' to get the HQ variant of an item icon).</param>
+        /// <param name="iconId">The icon ID.</param>
+        /// <returns>The <see cref="TexFile"/> containing the icon.</returns>
+        public TexFile GetIcon(string type, int iconId)
+        {
+            type ??= string.Empty;
+            if (type.Length > 0 && !type.EndsWith("/"))
+                type += "/";
+
+            var filePath = string.Format(IconFileFormat, iconId / 1000, type, iconId);
+            var file = this.GetFile<TexFile>(filePath);
+
+            if (file != default(TexFile) || type.Length <= 0) return file;
+
+            // Couldn't get specific type, try for generic version.
+            filePath = string.Format(IconFileFormat, iconId / 1000, string.Empty, iconId);
+            file = this.GetFile<TexFile>(filePath);
+            return file;
+        }
+
         #endregion
     }
 }

Dalamud/Data/LuminaExtensions/LanguageExtensions.cs

@@ -0,0 +1,33 @@
+using System.Collections.Generic;
+using Lumina.Data;
+
+namespace Dalamud.Data.LuminaExtensions
+{
+    /// <summary>
+    /// Extensions to <see cref="Language"/>.
+    /// </summary>
+    public static class LanguageExtensions
+    {
+        private static readonly Dictionary<Language, string> LangToCode = new Dictionary<Language, string>()
+        {
+            { Language.None, "" },
+            { Language.Japanese, "ja" },
+            { Language.English, "en" },
+            { Language.German, "de" },
+            { Language.French, "fr" },
+            { Language.ChineseSimplified, "chs" },
+            { Language.ChineseTraditional, "cht" },
+            { Language.Korean, "ko" },
+        };
+
+        /// <summary>
+        /// Return the language code for a <see cref="Language"/>.
+        /// </summary>
+        /// <param name="language">The Language.</param>
+        /// <returns>The language code.</returns>
+        public static string GetCode(this Language language)
+        {
+            return LangToCode[language];
+        }
+    }
+}

Dalamud/Data/LuminaExtensions/TexFileExtensions.cs

@@ -0,0 +1,32 @@
+using ImGuiScene;
+using Lumina.Data.Files;
+
+namespace Dalamud.Data.LuminaExtensions
+{
+    /// <summary>
+    /// Extensions to <see cref="TexFile"/>.
+    /// </summary>
+    public static class TexFileExtensions
+    {
+        /// <summary>
+        /// Returns the image data formatted for <see cref="RawDX11Scene.LoadImageRaw"/>.
+        /// </summary>
+        /// <param name="texFile">The TexFile to format.</param>
+        /// <returns>The formatted image data.</returns>
+        public static byte[] GetRgbaImageData(this TexFile texFile)
+        {
+            var imageData = texFile.ImageData;
+            var dst = new byte[imageData.Length];
+
+            for (var i = 0; i < dst.Length; i += 4)
+            {
+                dst[i] = imageData[i + 2];
+                dst[i + 1] = imageData[i + 1];
+                dst[i + 2] = imageData[i];
+                dst[i + 3] = imageData[i + 3];
+            }
+
+            return dst;
+        }
+    }
+}