// 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 _FDE_TXTEDTPAGE_H
#define _FDE_TXTEDTPAGE_H
class CFDE_TxtEdtEngine;
class IFX_CharIter;
class CFDE_TxtEdtPage;
class CFDE_TxtEdtLineExt;
class CFDE_TxtEdtTextSet;
class CFDE_TxtEdtParag;
enum FDE_TXTEDT_CHARTYPE {
  FDE_TXTEDT_CHARTYPE_Unknown = 0,
  FDE_TXTEDT_CHARTYPE_Tab,
  FDE_TXTEDT_CHARTYPE_Space,
  FDE_TXTEDT_CHARTYPE_Punctuation,
  FDE_TXTEDT_CHARTYPE_LineBreak,
  FDE_TXTEDT_CHARTYPE_Number,
  FDE_TXTEDT_CHARTYPE_Char,
  FDE_TXTEDT_CHARTYPE_CJK,
};
inline FDE_TXTEDT_CHARTYPE FDE_GetEditSelCharType(FX_WCHAR wChar) {
  if (wChar == 0x9) {
    return FDE_TXTEDT_CHARTYPE_Tab;
  } else if (wChar == 0x20 || wChar == 0xA0) {
    return FDE_TXTEDT_CHARTYPE_Space;
  } else if (wChar == 0x9 || wChar == 0x20 || wChar == 0xA0 ||
             (wChar >= L'!' && wChar <= L'/') ||
             (wChar >= L':' && wChar <= L'@') ||
             (wChar >= L'[' && wChar <= L'^') ||
             (wChar >= L'{' && wChar <= L'~') || wChar == 0x60) {
    return FDE_TXTEDT_CHARTYPE_Punctuation;
  } else if (wChar == 0x0a || wChar == 0x0d) {
    return FDE_TXTEDT_CHARTYPE_LineBreak;
  } else if (wChar >= '0' && wChar <= '9') {
    return FDE_TXTEDT_CHARTYPE_Number;
  } else if ((wChar >= 0x2e80 && wChar <= 0x2eff) ||
             (wChar >= 0x3000 && wChar <= 0x303f) ||
             (wChar >= 0x31c0 && wChar <= 0x31ef) ||
             (wChar >= 0x3200 && wChar <= 0x32ff) ||
             (wChar >= 0x3300 && wChar <= 0x33ff) ||
             (wChar >= 0x3400 && wChar <= 0x4dbf) ||
             (wChar >= 0x4e00 && wChar <= 0x9fff) ||
             (wChar >= 0xf900 && wChar <= 0xfaff) ||
             (wChar >= 0xfe30 && wChar <= 0xfe4f)) {
    return FDE_TXTEDT_CHARTYPE_CJK;
  } else {
    return FDE_TXTEDT_CHARTYPE_Char;
  }
}
typedef struct _FDE_TXTEDTPIECE {
  int32_t nStart;
  int32_t nCount;
  int32_t nBidiLevel;
  CFX_RectF rtPiece;
  FX_DWORD dwCharStyles;
} FDE_TEXTEDITPIECE, *FDE_LPTEXTEDITPIECE;
typedef CFX_MassArrayTemplate<FDE_TEXTEDITPIECE> CFDE_TXTEDTPieceMassArray;
class CFDE_TxtEdtTextSet : public IFDE_TextSet {
 public:
  CFDE_TxtEdtTextSet(CFDE_TxtEdtPage* pPage);
  ~CFDE_TxtEdtTextSet();

  virtual FDE_VISUALOBJTYPE GetType();
  virtual FX_BOOL GetBBox(FDE_HVISUALOBJ hVisualObj, CFX_RectF& bbox);
  virtual FX_BOOL GetMatrix(FDE_HVISUALOBJ hVisualObj, CFX_Matrix& matrix);
  virtual FX_BOOL GetRect(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt);
  virtual FX_BOOL GetClip(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt);
  virtual int32_t GetString(FDE_HVISUALOBJ hText, CFX_WideString& wsText);
  virtual IFX_Font* GetFont(FDE_HVISUALOBJ hText);
  virtual FX_FLOAT GetFontSize(FDE_HVISUALOBJ hText);
  virtual FX_ARGB GetFontColor(FDE_HVISUALOBJ hText);
  virtual int32_t GetDisplayPos(FDE_HVISUALOBJ hText,
                                FXTEXT_CHARPOS* pCharPos,
                                FX_BOOL bCharCode = FALSE,
                                CFX_WideString* pWSForms = NULL);
  virtual int32_t GetCharRects(FDE_HVISUALOBJ hText, CFX_RectFArray& rtArray);
  virtual int32_t GetCharRects_Impl(FDE_HVISUALOBJ hText,
                                    CFX_RectFArray& rtArray,
                                    FX_BOOL bBBox = FALSE);

 private:
  CFDE_TxtEdtPage* m_pPage;
};
class CFDE_TxtEdtPage : public IFDE_TxtEdtPage {
 public:
  CFDE_TxtEdtPage(IFDE_TxtEdtEngine* pEngine, int32_t nLineIndex);

  virtual void Release();
  virtual IFDE_TxtEdtEngine* GetEngine() const;

  virtual FDE_VISUALOBJTYPE GetType();
  virtual FX_BOOL GetBBox(FDE_HVISUALOBJ hVisualObj, CFX_RectF& bbox);
  virtual FX_BOOL GetMatrix(FDE_HVISUALOBJ hVisualObj, CFX_Matrix& matrix);
  virtual FX_BOOL GetRect(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt);
  virtual FX_BOOL GetClip(FDE_HVISUALOBJ hVisualObj, CFX_RectF& rt);
  virtual int32_t GetCharRect(int32_t nIndex,
                              CFX_RectF& rect,
                              FX_BOOL bBBox = FALSE) const;
  virtual int32_t GetCharIndex(const CFX_PointF& fPoint, FX_BOOL& bBefore);
  virtual int32_t SelectWord(const CFX_PointF& fPoint, int32_t& nCount);
  virtual int32_t GetCharStart() const;
  virtual int32_t GetCharCount() const;
  virtual void CalcRangeRectArray(int32_t nStart,
                                  int32_t nCount,
                                  CFX_RectFArray& RectFArr) const;
  virtual int32_t GetDisplayPos(const CFX_RectF& rtClip,
                                FXTEXT_CHARPOS*& pCharPos,
                                FX_LPRECTF pBBox) const;

  virtual FX_BOOL IsLoaded(FX_LPCRECTF pClipBox = NULL);
  virtual int32_t LoadPage(FX_LPCRECTF pClipBox = NULL,
                           IFX_Pause* pPause = NULL);
  virtual void UnloadPage(FX_LPCRECTF pClipBox = NULL);

  virtual const CFX_RectF& GetContentsBox();
  virtual FX_POSITION GetFirstPosition(FDE_HVISUALOBJ hCanvas);
  virtual FDE_HVISUALOBJ GetNext(FDE_HVISUALOBJ hCanvas,
                                 FX_POSITION& pos,
                                 IFDE_VisualSet*& pVisualSet);
  virtual FDE_HVISUALOBJ GetParentCanvas(FDE_HVISUALOBJ hCanvas,
                                         IFDE_VisualSet*& pVisualSet);
  virtual FX_WCHAR GetChar(void* pIdentity, int32_t index) const;
  virtual int32_t GetWidth(void* pIdentity, int32_t index) const;

 protected:
  virtual ~CFDE_TxtEdtPage();

 private:
  void NormalizePt2Rect(CFX_PointF& ptF,
                        const CFX_RectF& rtF,
                        FX_FLOAT fTolerance) const;
  IFX_CharIter* m_pIter;
  CFDE_TxtEdtTextSet* m_pTextSet;
  CFDE_TxtEdtEngine* m_pEditEngine;
  CFDE_TXTEDTPieceMassArray m_PieceMassArr;
  CFDE_TxtEdtParag* m_pBgnParag;
  CFDE_TxtEdtParag* m_pEndParag;

  int32_t m_nRefCount;
  int32_t m_nPageStart;
  int32_t m_nCharCount;
  int32_t m_nPageIndex;
  FX_BOOL m_bLoaded;
  CFX_RectF m_rtPage;
  CFX_RectF m_rtPageMargin;
  CFX_RectF m_rtPageContents;
  CFX_RectF m_rtPageCanvas;
  int32_t* m_pCharWidth;
};
#endif