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authorJohn Abd-El-Malek <jabdelmalek@google.com>2014-05-17 22:33:34 -0700
committerJohn Abd-El-Malek <jabdelmalek@google.com>2014-05-17 22:33:34 -0700
commit5110c4743751145c4ae1934cd1d83bc6c55bb43f (patch)
treeb141608096b73163182764c25b895d3df4b2c182 /core/src/fxcrt/fx_unicode.cpp
parent76b563d2feed92ed328afb1f15e3466a9536b11b (diff)
downloadpdfium-5110c4743751145c4ae1934cd1d83bc6c55bb43f.tar.xz
Initial commit.
Diffstat (limited to 'core/src/fxcrt/fx_unicode.cpp')
-rw-r--r--core/src/fxcrt/fx_unicode.cpp65
1 files changed, 65 insertions, 0 deletions
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;
+}