From 5110c4743751145c4ae1934cd1d83bc6c55bb43f Mon Sep 17 00:00:00 2001
From: John Abd-El-Malek <jabdelmalek@google.com>
Date: Sat, 17 May 2014 22:33:34 -0700
Subject: Initial commit.

---
 core/src/fxcrt/fx_unicode.cpp | 65 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 core/src/fxcrt/fx_unicode.cpp

(limited to 'core/src/fxcrt/fx_unicode.cpp')

diff --git a/core/src/fxcrt/fx_unicode.cpp b/core/src/fxcrt/fx_unicode.cpp
new file mode 100644
index 0000000000..aac6142ce4
--- /dev/null
+++ b/core/src/fxcrt/fx_unicode.cpp
@@ -0,0 +1,65 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+ 
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../include/fxcrt/fx_ext.h"
+extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536];
+extern const FX_WCHAR gs_FX_TextLayout_VerticalMirror[64];
+extern const FX_WCHAR gs_FX_TextLayout_BidiMirror[512];
+FX_DWORD FX_GetUnicodeProperties(FX_WCHAR wch)
+{
+    return gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+}
+FX_BOOL FX_IsCtrlCode(FX_WCHAR ch)
+{
+    FX_DWORD dwRet = (gs_FX_TextLayout_CodeProperties[(FX_WORD)ch] & FX_CHARTYPEBITSMASK);
+    return dwRet == FX_CHARTYPE_Tab || dwRet == FX_CHARTYPE_Control;
+}
+FX_BOOL FX_IsRotationCode(FX_WCHAR ch)
+{
+    return (gs_FX_TextLayout_CodeProperties[(FX_WORD)ch] & 0x8000) != 0;
+}
+FX_BOOL FX_IsCombinationChar(FX_WCHAR wch)
+{
+    FX_DWORD dwProps = (gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_CHARTYPEBITSMASK);
+    return dwProps == FX_CHARTYPE_Combination;
+}
+FX_BOOL	FX_IsBidiChar(FX_WCHAR wch)
+{
+    FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+    FX_INT32 iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
+    return (FX_BIDICLASS_R == iBidiCls || FX_BIDICLASS_AL == iBidiCls);
+}
+FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_BOOL bRTL, FX_BOOL bVertical)
+{
+    FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+    FX_DWORD dwTemp = (dwProps & 0xFF800000);
+    if (bRTL && dwTemp < 0xFF800000) {
+        wch = gs_FX_TextLayout_BidiMirror[dwTemp >> 23];
+        dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+    }
+    if (bVertical) {
+        dwTemp = (dwProps & 0x007E0000);
+        if (dwTemp < 0x007E0000) {
+            wch = gs_FX_TextLayout_VerticalMirror[dwTemp >> 17];
+        }
+    }
+    return wch;
+}
+FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_DWORD dwProps, FX_BOOL bRTL, FX_BOOL bVertical)
+{
+    FX_DWORD dwTemp = (dwProps & 0xFF800000);
+    if (bRTL && dwTemp < 0xFF800000) {
+        wch = gs_FX_TextLayout_BidiMirror[dwTemp >> 23];
+        dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+    }
+    if (bVertical) {
+        dwTemp = (dwProps & 0x007E0000);
+        if (dwTemp < 0x007E0000) {
+            wch = gs_FX_TextLayout_VerticalMirror[dwTemp >> 17];
+        }
+    }
+    return wch;
+}
-- 
cgit v1.2.3