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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 XFA_FDE_CFDE_TXTEDTENGINE_H_
#define XFA_FDE_CFDE_TXTEDTENGINE_H_
#include <memory>
#include <vector>
#include "core/fxcrt/cfx_retain_ptr.h"
#include "core/fxcrt/cfx_seekablestreamproxy.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxge/fx_dib.h"
class CFDE_TxtEdtBuf;
class CFDE_TxtEdtPage;
class CFDE_TxtEdtParag;
class CFGAS_GEFont;
class CFWL_Edit;
class CFX_TxtBreak;
class IFDE_TxtEdtDoRecord;
class IFX_CharIter;
#define FDE_TEXTEDITMODE_MultiLines (1L << 0)
#define FDE_TEXTEDITMODE_AutoLineWrap (1L << 1)
#define FDE_TEXTEDITMODE_LimitArea_Vert (1L << 3)
#define FDE_TEXTEDITMODE_LimitArea_Horz (1L << 4)
#define FDE_TEXTEDITMODE_Validate (1L << 8)
#define FDE_TEXTEDITMODE_Password (1L << 9)
#define FDE_TEXTEDITALIGN_Left 0
#define FDE_TEXTEDITALIGN_Center (1L << 0)
#define FDE_TEXTEDITALIGN_Right (1L << 1)
#define FDE_TEXTEDITALIGN_Justified (1L << 4)
#define FDE_TEXTEDITLAYOUT_CombText (1L << 4)
#define FDE_TEXTEDITLAYOUT_LastLineHeight (1L << 8)
enum FDE_TXTEDTMOVECARET {
MC_MoveNone = 0,
MC_Left,
MC_Right,
MC_Up,
MC_Down,
MC_LineStart,
MC_LineEnd,
MC_Home,
MC_End,
};
struct FDE_TXTEDTPARAMS {
FDE_TXTEDTPARAMS();
~FDE_TXTEDTPARAMS();
float fPlateWidth;
float fPlateHeight;
int32_t nLineCount;
uint32_t dwLayoutStyles;
uint32_t dwAlignment;
uint32_t dwMode;
CFX_RetainPtr<CFGAS_GEFont> pFont;
float fFontSize;
FX_ARGB dwFontColor;
float fLineSpace;
float fTabWidth;
wchar_t wDefChar;
wchar_t wLineBreakChar;
int32_t nLineEnd;
int32_t nHorzScale;
float fCharSpace;
CFWL_Edit* pEventSink;
};
enum FDE_TXTEDT_TEXTCHANGE_TYPE {
FDE_TXTEDT_TEXTCHANGE_TYPE_Insert = 0,
FDE_TXTEDT_TEXTCHANGE_TYPE_Delete,
FDE_TXTEDT_TEXTCHANGE_TYPE_Replace,
};
struct FDE_TXTEDT_TEXTCHANGE_INFO {
FDE_TXTEDT_TEXTCHANGE_INFO();
~FDE_TXTEDT_TEXTCHANGE_INFO();
int32_t nChangeType;
CFX_WideString wsInsert;
CFX_WideString wsDelete;
CFX_WideString wsPrevText;
};
class CFDE_TxtEdtEngine {
public:
CFDE_TxtEdtEngine();
~CFDE_TxtEdtEngine();
void SetEditParams(const FDE_TXTEDTPARAMS& params);
FDE_TXTEDTPARAMS* GetEditParams();
int32_t CountPages() const;
CFDE_TxtEdtPage* GetPage(int32_t nIndex);
void SetTextByStream(const CFX_RetainPtr<CFX_SeekableStreamProxy>& pStream);
void SetText(const CFX_WideString& wsText);
int32_t GetTextLength() const;
CFX_WideString GetText(int32_t nStart, int32_t nCount) const;
void ClearText();
int32_t GetCaretRect(CFX_RectF& rtCaret) const;
int32_t GetCaretPos() const;
int32_t SetCaretPos(int32_t nIndex, bool bBefore);
int32_t MoveCaretPos(FDE_TXTEDTMOVECARET eMoveCaret, bool bShift, bool bCtrl);
bool IsLocked() const;
int32_t Insert(int32_t nStart, const wchar_t* lpText, int32_t nLength);
int32_t Delete(int32_t nStart, bool bBackspace);
int32_t DeleteRange(int32_t nStart, size_t nCount);
int32_t Replace(int32_t nStart,
int32_t nLength,
const CFX_WideString& wsReplace);
void SetLimit(int32_t nLimit);
int32_t GetLimit() const { return m_nLimit; }
void SetAliasChar(wchar_t wcAlias);
void RemoveSelRange(int32_t nStart, int32_t nCount);
void AddSelRange(int32_t nStart, int32_t nCount);
int32_t CountSelRanges() const;
int32_t GetSelRange(int32_t nIndex, int32_t* nStart) const;
void ClearSelection();
bool Redo(const IFDE_TxtEdtDoRecord* pRecord);
bool Undo(const IFDE_TxtEdtDoRecord* pRecord);
void Layout();
int32_t CountParags() const;
CFDE_TxtEdtParag* GetParag(int32_t nParagIndex) const;
CFDE_TxtEdtBuf* GetTextBuf() const;
int32_t GetTextBufLength() const;
CFX_TxtBreak* GetTextBreak() const;
int32_t GetLineCount() const;
int32_t GetPageLineCount() const;
int32_t Line2Parag(int32_t nStartParag,
int32_t nStartLineofParag,
int32_t nLineIndex,
int32_t& nStartLine) const;
wchar_t GetAliasChar() const { return m_wcAliasChar; }
bool IsSelect();
void Inner_DeleteRange(int32_t nStart, int32_t nCount);
void Inner_Insert(int32_t nStart, const wchar_t* lpText, int32_t nLength);
const FDE_TXTEDTPARAMS* GetParams() const { return &m_Param; }
FDE_TXTEDT_TEXTCHANGE_INFO* GetChangeInfo() { return &m_ChangeInfo; }
void UpdateChangeInfoInsert(int32_t type, const CFX_WideString& insertValue) {
m_ChangeInfo.nChangeType = type;
m_ChangeInfo.wsInsert = insertValue;
}
void UpdateChangeInfoDelete(int32_t type, const CFX_WideString& deleteValue) {
m_ChangeInfo.nChangeType = type;
m_ChangeInfo.wsDelete = deleteValue;
}
private:
struct FDE_TXTEDTSELRANGE {
int32_t nStart;
int32_t nCount;
};
struct FDE_TXTEDTPARAGPOS {
int32_t nParagIndex;
int32_t nCharIndex;
};
CFX_WideString GetPreDeleteText(int32_t nIndex, int32_t nLength);
CFX_WideString GetPreInsertText(int32_t nIndex,
const wchar_t* lpText,
int32_t nLength);
CFX_WideString GetPreReplaceText(int32_t nIndex,
int32_t nOriginLength,
const wchar_t* lpText,
int32_t nLength);
void DeleteRange_DoRecord(int32_t nStart, int32_t nCount, bool bSel);
void ResetEngine();
void RebuildParagraphs();
void RemoveAllParags();
void RemoveAllPages();
void UpdateLineCounts();
void UpdatePages();
void UpdateTxtBreak();
bool ReplaceParagEnd(wchar_t*& lpText, int32_t& nLength, bool bPreIsCR);
void RecoverParagEnd(CFX_WideString& wsText) const;
int32_t MovePage2Char(int32_t nIndex);
void TextPos2ParagPos(int32_t nIndex, FDE_TXTEDTPARAGPOS& ParagPos) const;
int32_t MoveForward(bool& bBefore);
int32_t MoveBackward(bool& bBefore);
bool MoveUp(CFX_PointF& ptCaret);
bool MoveDown(CFX_PointF& ptCaret);
bool MoveLineStart();
bool MoveLineEnd();
bool MoveHome();
bool MoveEnd();
bool IsFitArea(CFX_WideString& wsText);
void UpdateCaretRect(int32_t nIndex, bool bBefore);
void GetCaretRect(CFX_RectF& rtCaret,
int32_t nPageIndex,
int32_t nCaret,
bool bBefore);
void UpdateCaretIndex(const CFX_PointF& ptCaret);
void DeleteSelect();
std::unique_ptr<CFDE_TxtEdtBuf> m_pTxtBuf;
std::unique_ptr<CFX_TxtBreak> m_pTextBreak;
FDE_TXTEDTPARAMS m_Param;
std::vector<std::unique_ptr<CFDE_TxtEdtPage>> m_PagePtrArray;
std::vector<std::unique_ptr<CFDE_TxtEdtParag>> m_ParagPtrArray;
std::vector<std::unique_ptr<FDE_TXTEDTSELRANGE>> m_SelRangePtrArr;
int32_t m_nPageLineCount;
int32_t m_nLineCount;
int32_t m_nAnchorPos;
float m_fCaretPosReserve;
int32_t m_nCaret;
bool m_bBefore;
int32_t m_nCaretPage;
CFX_RectF m_rtCaret;
bool m_bLock;
int32_t m_nLimit;
wchar_t m_wcAliasChar;
int32_t m_nFirstLineEnd;
bool m_bAutoLineEnd;
wchar_t m_wLineEnd;
FDE_TXTEDT_TEXTCHANGE_INFO m_ChangeInfo;
};
#endif // XFA_FDE_CFDE_TXTEDTENGINE_H_
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