1 files changed, 102 insertions, 0 deletions
diff --git a/xfa/fgas/layout/cfx_txtbreak.h b/xfa/fgas/layout/cfx_txtbreak.h
new file mode 100644
index 0000000000..0f11844453
--- /dev/null
+++ b/xfa/fgas/layout/cfx_txtbreak.h
@@ -0,0 +1,102 @@
+// 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_FGAS_LAYOUT_CFX_TXTBREAK_H_
+#define XFA_FGAS_LAYOUT_CFX_TXTBREAK_H_
+
+#include <deque>
+#include <memory>
+#include <vector>
+
+#include "core/fxcrt/cfx_char.h"
+#include "core/fxge/cfx_renderdevice.h"
+#include "third_party/base/stl_util.h"
+#include "xfa/fde/cfde_txtedtpage.h"
+#include "xfa/fgas/layout/cfx_break.h"
+
+class CFGAS_GEFont;
+struct FDE_TEXTEDITPIECE;
+
+#define FX_TXTCHARSTYLE_ArabicShadda 0x0020
+#define FX_TXTCHARSTYLE_OddBidiLevel 0x0040
+
+enum CFX_TxtLineAlignment {
+  CFX_TxtLineAlignment_Left = 0,
+  CFX_TxtLineAlignment_Center = 1 << 0,
+  CFX_TxtLineAlignment_Right = 1 << 1,
+  CFX_TxtLineAlignment_Justified = 1 << 2
+};
+
+inline bool CFX_BreakTypeNoneOrPiece(CFX_BreakType type) {
+  return type == CFX_BreakType::None || type == CFX_BreakType::Piece;
+}
+
+struct FX_TXTRUN {
+  FX_TXTRUN();
+  FX_TXTRUN(const FX_TXTRUN& other);
+  ~FX_TXTRUN();
+
+  CFDE_TxtEdtPage* pAccess;
+  const FDE_TEXTEDITPIECE* pIdentity;
+  CFX_WideString wsStr;
+  int32_t* pWidths;
+  int32_t iLength;
+  CFX_RetainPtr<CFGAS_GEFont> pFont;
+  float fFontSize;
+  uint32_t dwStyles;
+  int32_t iHorizontalScale;
+  int32_t iVerticalScale;
+  uint32_t dwCharStyles;
+  const CFX_RectF* pRect;
+  wchar_t wLineBreakChar;
+  bool bSkipSpace;
+};
+
+class CFX_TxtBreak : public CFX_Break {
+ public:
+  CFX_TxtBreak();
+  ~CFX_TxtBreak() override;
+
+  void SetLineWidth(float fLineWidth);
+  void SetAlignment(int32_t iAlignment);
+  void SetCombWidth(float fCombWidth);
+  CFX_BreakType EndBreak(CFX_BreakType dwStatus);
+
+  int32_t GetDisplayPos(const FX_TXTRUN* pTxtRun,
+                        FXTEXT_CHARPOS* pCharPos,
+                        bool bCharCode = false,
+                        CFX_WideString* pWSForms = nullptr) const;
+  std::vector<CFX_RectF> GetCharRects(const FX_TXTRUN* pTxtRun,
+                                      bool bCharBBox = false) const;
+  CFX_BreakType AppendChar(wchar_t wch);
+
+ private:
+  void AppendChar_Combination(CFX_Char* pCurChar);
+  void AppendChar_Tab(CFX_Char* pCurChar);
+  void AppendChar_PageLoad(CFX_Char* pCurChar, uint32_t dwProps);
+  CFX_BreakType AppendChar_Control(CFX_Char* pCurChar);
+  CFX_BreakType AppendChar_Arabic(CFX_Char* pCurChar);
+  CFX_BreakType AppendChar_Others(CFX_Char* pCurChar);
+
+  void ResetContextCharStyles();
+  bool EndBreak_SplitLine(CFX_BreakLine* pNextLine, bool bAllChars);
+  void EndBreak_BidiLine(std::deque<FX_TPO>* tpos, CFX_BreakType dwStatus);
+  void EndBreak_Alignment(const std::deque<FX_TPO>& tpos,
+                          bool bAllChars,
+                          CFX_BreakType dwStatus);
+  int32_t GetBreakPos(std::vector<CFX_Char>& ca,
+                      int32_t& iEndPos,
+                      bool bAllChars = false,
+                      bool bOnlyBrk = false);
+  void SplitTextLine(CFX_BreakLine* pCurLine,
+                     CFX_BreakLine* pNextLine,
+                     bool bAllChars = false);
+
+  int32_t m_iAlignment;
+  int32_t m_iCombWidth;
+};
+
+#endif  // XFA_FGAS_LAYOUT_CFX_TXTBREAK_H_