1 files changed, 29 insertions, 19 deletions
diff --git a/core/include/fxcrt/fx_ucd.h b/core/include/fxcrt/fx_ucd.h
index fb417189a1..823b80700a 100644
--- a/core/include/fxcrt/fx_ucd.h
+++ b/core/include/fxcrt/fx_ucd.h
@@ -53,27 +53,37 @@ enum FX_CHARBREAKPROP {
 #define FX_BIDICLASSBITS 6
 #define FX_BIDICLASSBITSMASK (31 << FX_BIDICLASSBITS)
 enum FX_BIDICLASS {
-  FX_BIDICLASS_ON = 0,
-  FX_BIDICLASS_L = 1,
-  FX_BIDICLASS_R = 2,
-  FX_BIDICLASS_AN = 3,
-  FX_BIDICLASS_EN = 4,
-  FX_BIDICLASS_AL = 5,
-  FX_BIDICLASS_NSM = 6,
-  FX_BIDICLASS_CS = 7,
-  FX_BIDICLASS_ES = 8,
-  FX_BIDICLASS_ET = 9,
-  FX_BIDICLASS_BN = 10,
-  FX_BIDICLASS_S = 11,
-  FX_BIDICLASS_WS = 12,
-  FX_BIDICLASS_B = 13,
-  FX_BIDICLASS_RLO = 14,
-  FX_BIDICLASS_RLE = 15,
-  FX_BIDICLASS_LRO = 16,
-  FX_BIDICLASS_LRE = 17,
-  FX_BIDICLASS_PDF = 18,
+  FX_BIDICLASS_ON = 0,    // Other Neutral
+  FX_BIDICLASS_L = 1,     // Left Letter
+  FX_BIDICLASS_R = 2,     // Right Letter
+  FX_BIDICLASS_AN = 3,    // Arabic Number
+  FX_BIDICLASS_EN = 4,    // European Number
+  FX_BIDICLASS_AL = 5,    // Arabic Letter
+  FX_BIDICLASS_NSM = 6,   // Non-spacing Mark
+  FX_BIDICLASS_CS = 7,    // Common Number Separator
+  FX_BIDICLASS_ES = 8,    // European Separator
+  FX_BIDICLASS_ET = 9,    // European Number Terminator
+  FX_BIDICLASS_BN = 10,   // Boundary Neutral
+  FX_BIDICLASS_S = 11,    // Segment Separator
+  FX_BIDICLASS_WS = 12,   // Whitespace
+  FX_BIDICLASS_B = 13,    // Paragraph Separator
+  FX_BIDICLASS_RLO = 14,  // Right-to-Left Override
+  FX_BIDICLASS_RLE = 15,  // Right-to-Left Embedding
+  FX_BIDICLASS_LRO = 16,  // Left-to-Right Override
+  FX_BIDICLASS_LRE = 17,  // Left-to-Right Embedding
+  FX_BIDICLASS_PDF = 18,  // Pop Directional Format
   FX_BIDICLASS_N = FX_BIDICLASS_ON,
 };
+
+extern const FX_DWORD kTextLayoutCodeProperties[];
+extern const size_t kTextLayoutCodePropertiesSize;
+
+extern const FX_WCHAR kFXTextLayoutVerticalMirror[];
+extern const size_t kFXTextLayoutVerticalMirrorSize;
+
+extern const FX_WCHAR kFXTextLayoutBidiMirror[];
+extern const size_t kFXTextLayoutBidiMirrorSize;
+
 #define FX_CHARTYPEBITS 11
 #define FX_CHARTYPEBITSMASK (15 << FX_CHARTYPEBITS)
 enum FX_CHARTYPE {