Ensure borders on IME mode foreground icon

Dalamud/Game/Text/SeIconChar.cs

@@ -611,29 +611,51 @@ public enum SeIconChar
     QuestRepeatable = 0xE0BF,
 
     /// <summary>
-    /// The IME hiragana icon unicode character.
+    /// The [あ] character indicating that the Japanese IME is in full-width Hiragana input mode.
     /// </summary>
+    /// <remarks>
+    /// Half-width Hiragana exists as a Windows API constant, but the feature is unused, or at least unexposed to the end user via the IME.
+    /// </remarks>
     ImeHiragana = 0xE020,
 
     /// <summary>
-    /// The IME katakana icon unicode character.
+    /// The [ア] character indicating that the Japanese IME is in full-width Katakana input mode.
     /// </summary>
     ImeKatakana = 0xE021,
 
     /// <summary>
-    /// The IME alphanumeric icon unicode character.
+    /// The [Ａ] character indicating that Japanese or Korean IME is in full-width Latin character input mode.
     /// </summary>
     ImeAlphanumeric = 0xE022,
 
     /// <summary>
-    /// The IME katakana half-width icon unicode character.
+    /// The [_ｱ] character indicating that the Japanese IME is in half-width Katakana input mode.
     /// </summary>
     ImeKatakanaHalfWidth = 0xE023,
 
     /// <summary>
-    /// The IME alphanumeric half-width icon unicode character.
+    /// The [_A] character indicating that Japanese or Korean IME is in half-width Latin character input mode.
     /// </summary>
     ImeAlphanumericHalfWidth = 0xE024,
+    
+    /// <summary>
+    /// The [가] character indicating that the Korean IME is in Hangul input mode.
+    /// </summary>
+    /// <remarks>
+    /// Use <see cref="ImeAlphanumeric"/> and <see cref="ImeAlphanumericHalfWidth"/> for alphanumeric input mode,
+    /// toggled via Alt+=.
+    /// </remarks>
+    ImeKoreanHangul = 0xE025,
+
+    /// <summary>
+    /// The [中] character indicating that the Chinese IME is in Han character input mode.
+    /// </summary>
+    ImeChineseHan = 0xE026,
+    
+    /// <summary>
+    /// The [英] character indicating that the Chinese IME is in Latin character input mode.
+    /// </summary>
+    ImeChineseLatin = 0xE027,
 
     /// <summary>
     /// The instance (1) icon unicode character.

Dalamud/Interface/Internal/DalamudIme.cs

@@ -19,7 +19,7 @@ using static TerraFX.Interop.Windows.Windows;
 namespace Dalamud.Interface.Internal;
 
 /// <summary>
-/// This class handles IME for non-English users.
+/// This class handles CJK IME.
 /// </summary>
 [ServiceManager.EarlyLoadedService]
 internal sealed unsafe class DalamudIme : IDisposable, IServiceType
@@ -251,7 +251,7 @@ internal sealed unsafe class DalamudIme : IDisposable, IServiceType
         {
             case LANG.LANG_KOREAN:
                 if (native)
-                    this.InputModeIcon = "\uE025";
+                    this.InputModeIcon = $"{(char)SeIconChar.ImeKoreanHangul}";
                 else if (fullwidth)
                     this.InputModeIcon = $"{(char)SeIconChar.ImeAlphanumeric}";
                 else
@@ -274,11 +274,10 @@ internal sealed unsafe class DalamudIme : IDisposable, IServiceType
                 break;
 
             case LANG.LANG_CHINESE:
-                // TODO: does Chinese IME also need "open" check?
                 if (native)
-                    this.InputModeIcon = "\uE026";
+                    this.InputModeIcon = $"{(char)SeIconChar.ImeChineseHan}";
                 else
-                    this.InputModeIcon = "\uE027";
+                    this.InputModeIcon = $"{(char)SeIconChar.ImeChineseLatin}";
                 break;
 
             default:

Dalamud/Interface/Internal/Windows/DalamudImeWindow.cs

@@ -133,6 +133,20 @@ internal unsafe class DalamudImeWindow : Window
 
         if (!expandUpward && drawIme)
         {
+            for (var dx = -2; dx <= 2; dx++)
+            {
+                for (var dy = -2; dy <= 2; dy++)
+                {
+                    if (dx != 0 || dy != 0)
+                    {
+                        drawList.AddText(
+                            cursor + new Vector2(dx, dy),
+                            ImGui.GetColorU32(ImGuiCol.WindowBg),
+                            ime.InputModeIcon);
+                    }
+                }
+            }
+
             drawList.AddText(cursor, ImGui.GetColorU32(ImGuiCol.Text), ime.InputModeIcon);
             cursor.Y += candTextSize.Y + spaceY;
         }
@@ -179,6 +193,20 @@ internal unsafe class DalamudImeWindow : Window
 
         if (expandUpward && drawIme)
         {
+            for (var dx = -2; dx <= 2; dx++)
+            {
+                for (var dy = -2; dy <= 2; dy++)
+                {
+                    if (dx != 0 || dy != 0)
+                    {
+                        drawList.AddText(
+                            cursor + new Vector2(dx, dy),
+                            ImGui.GetColorU32(ImGuiCol.WindowBg),
+                            ime.InputModeIcon);
+                    }
+                }
+            }
+
             drawList.AddText(cursor, ImGui.GetColorU32(ImGuiCol.Text), ime.InputModeIcon);
         }