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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
#ifndef CORE_INCLUDE_FXCRT_FX_ARB_H_
#define CORE_INCLUDE_FXCRT_FX_ARB_H_
#include "fx_system.h"
#include "fx_ucd.h"
class IFX_ArabicChar;
class IFX_BidiChar;
#ifdef __cplusplus
extern "C"
{
#endif
typedef struct _FX_ARBFORMTABLE {
FX_WCHAR wIsolated;
FX_WCHAR wFinal;
FX_WCHAR wInitial;
FX_WCHAR wMedial;
} FX_ARBFORMTABLE, * FX_LPARBFORMTABLE;
typedef FX_ARBFORMTABLE const * FX_LPCARBFORMTABLE;
typedef struct _FX_ARAALEF {
FX_WCHAR wAlef;
FX_WCHAR wIsolated;
} FX_ARAALEF, * FX_LPARAALEF;
typedef FX_ARAALEF const * FX_LPCARAALEF;
typedef struct _FX_ARASHADDA {
FX_WCHAR wShadda;
FX_WCHAR wIsolated;
} FX_ARASHADDA, * FX_LPARASHADDA;
typedef FX_ARASHADDA const * FX_LPCARASHADDA;
FX_LPCARBFORMTABLE FX_GetArabicFormTable(FX_WCHAR unicode);
FX_WCHAR FX_GetArabicFromAlefTable(FX_WCHAR alef);
FX_WCHAR FX_GetArabicFromShaddaTable(FX_WCHAR shadda);
#ifdef __cplusplus
};
#endif
enum FX_ARBPOSITION {
FX_ARBPOSITION_Isolated = 0,
FX_ARBPOSITION_Final,
FX_ARBPOSITION_Initial,
FX_ARBPOSITION_Medial,
};
class IFX_ArabicChar
{
public:
static IFX_ArabicChar* Create();
virtual void Release() = 0;
virtual FX_BOOL IsArabicChar(FX_WCHAR wch) const = 0;
virtual FX_BOOL IsArabicFormChar(FX_WCHAR wch) const = 0;
virtual FX_WCHAR GetFormChar(FX_WCHAR wch, FX_WCHAR prev = 0, FX_WCHAR next = 0) const = 0;
virtual FX_WCHAR GetFormChar(const CFX_Char *cur, const CFX_Char *prev, const CFX_Char *next) const = 0;
};
void FX_BidiLine(CFX_WideString &wsText, int32_t iBaseLevel = 0);
void FX_BidiLine(CFX_TxtCharArray &chars, int32_t iCount, int32_t iBaseLevel = 0);
void FX_BidiLine(CFX_RTFCharArray &chars, int32_t iCount, int32_t iBaseLevel = 0);
class IFX_BidiChar
{
public:
static IFX_BidiChar* Create();
virtual void Release() = 0;
virtual void SetPolicy(FX_BOOL bSeparateNeutral = TRUE) = 0;
virtual FX_BOOL AppendChar(FX_WCHAR wch) = 0;
virtual FX_BOOL EndChar() = 0;
virtual int32_t GetBidiInfo(int32_t &iStart, int32_t &iCount) = 0;
virtual void Reset() = 0;
protected:
~IFX_BidiChar() { }
};
#endif // CORE_INCLUDE_FXCRT_FX_ARB_H_
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