Create common base class for TxtBreak and RTFBreak.

This CL starts extracting common members between the two break classes
into a common base class. This also normalizes some of the member names
to be the same across classes.

Change-Id: I7f4e5065f2dac79eb4ebba397458236cc0609d38
Reviewed-on: https://pdfium-review.googlesource.com/3058
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/xfa/fgas/layout/cfx_break.h b/xfa/fgas/layout/cfx_break.h
new file mode 100644
index 0000000000..d1bbde0682
--- /dev/null
+++ b/xfa/fgas/layout/cfx_break.h
@@ -0,0 +1,81 @@
+// Copyright 2017 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_BREAK_H_
+#define XFA_FGAS_LAYOUT_CFX_BREAK_H_
+
+#include <stdint.h>
+
+#include "core/fxcrt/cfx_retain_ptr.h"
+#include "xfa/fgas/font/cfgas_gefont.h"
+#include "xfa/fgas/layout/cfx_breakline.h"
+
+struct FX_TPO {
+  bool operator<(const FX_TPO& that) const { return pos < that.pos; }
+
+  int32_t index;
+  int32_t pos;
+};
+
+enum FX_LAYOUTSTYLE {
+  FX_LAYOUTSTYLE_None = 0,
+  FX_LAYOUTSTYLE_Pagination = 0x01,
+  FX_LAYOUTSTYLE_ExpandTab = 0x10,
+  FX_LAYOUTSTYLE_SingleLine = 0x200,
+  FX_LAYOUTSTYLE_CombText = 0x400
+};
+
+class CFX_Break {
+ public:
+  virtual ~CFX_Break();
+
+  void SetLayoutStyles(uint32_t dwLayoutStyles);
+  uint32_t GetLayoutStyles() const { return m_dwLayoutStyles; }
+
+  void SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont);
+  void SetFontSize(float fFontSize);
+  void SetTabWidth(float fTabWidth);
+
+  void SetHorizontalScale(int32_t iScale);
+  void SetVerticalScale(int32_t iScale);
+  void SetLineBreakTolerance(float fTolerance);
+  void SetLineBoundary(float fLineStart, float fLineEnd);
+
+  void SetCharSpace(float fCharSpace);
+  void SetParagraphBreakChar(wchar_t wch);
+  void SetDefaultChar(wchar_t wch);
+
+  virtual void SetBreakStatus() = 0;
+  virtual void ResetArabicContext() {}
+
+ protected:
+  explicit CFX_Break(uint32_t dwLayoutStyles);
+
+  FX_CHARTYPE m_eCharType;
+  bool m_bSingleLine;
+  bool m_bCombText;
+  uint32_t m_dwLayoutStyles;
+  int32_t m_iLineStart;
+  int32_t m_iLineWidth;
+  wchar_t m_wParagraphBreakChar;
+  int32_t m_iFontSize;
+  int32_t m_iTabWidth;
+  int32_t m_iHorizontalScale;
+  int32_t m_iVerticalScale;
+  int32_t m_iTolerance;
+  int32_t m_iCharSpace;
+  int32_t m_iDefChar;
+  wchar_t m_wDefChar;
+  CFX_RetainPtr<CFGAS_GEFont> m_pFont;
+  CFX_BreakLine m_Line[2];
+  CFX_BreakLine* m_pCurLine;
+  int8_t m_iReadyLineIndex;
+
+ private:
+  void FontChanged();
+};
+
+#endif  // XFA_FGAS_LAYOUT_CFX_BREAK_H_