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// 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];
int32_t 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;
}
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