1 files changed, 135 insertions, 0 deletions
diff --git a/xfa/fxfa/app/cxfa_textlayout.h b/xfa/fxfa/app/cxfa_textlayout.h
new file mode 100644
index 0000000000..e21a5de424
--- /dev/null
+++ b/xfa/fxfa/app/cxfa_textlayout.h
@@ -0,0 +1,135 @@
+// 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_FXFA_APP_CXFA_TEXTLAYOUT_H_
+#define XFA_FXFA_APP_CXFA_TEXTLAYOUT_H_
+
+#include <memory>
+
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_coordinates.h"
+#include "core/fxcrt/fx_string.h"
+#include "xfa/fde/css/fde_css.h"
+#include "xfa/fgas/layout/fgas_rtfbreak.h"
+#include "xfa/fxfa/app/cxfa_textparser.h"
+
+class CFDE_Brush;
+class CFDE_Pen;
+class CFDE_RenderDevice;
+class CFDE_XMLNode;
+class CFX_RTFBreak;
+class CXFA_LoaderContext;
+class CXFA_LinkUserData;
+class CXFA_Node;
+class CXFA_PieceLine;
+class CXFA_TextProvider;
+class CXFA_TextTabstopsContext;
+class IFDE_CSSComputedStyle;
+class IFX_MemoryAllocator;
+class XFA_TextPiece;
+
+class CXFA_TextLayout {
+ public:
+  explicit CXFA_TextLayout(CXFA_TextProvider* pTextProvider);
+  ~CXFA_TextLayout();
+
+  int32_t GetText(CFX_WideString& wsText);
+  FX_FLOAT GetLayoutHeight();
+  FX_FLOAT StartLayout(FX_FLOAT fWidth = -1);
+  bool DoLayout(int32_t iBlockIndex,
+                FX_FLOAT& fCalcHeight,
+                FX_FLOAT fContentAreaHeight = -1,
+                FX_FLOAT fTextHeight = -1);
+
+  bool CalcSize(const CFX_SizeF& minSize,
+                const CFX_SizeF& maxSize,
+                CFX_SizeF& defaultSize);
+  bool Layout(const CFX_SizeF& size, FX_FLOAT* fHeight = nullptr);
+  void ItemBlocks(const CFX_RectF& rtText, int32_t iBlockIndex);
+  bool DrawString(CFX_RenderDevice* pFxDevice,
+                  const CFX_Matrix& tmDoc2Device,
+                  const CFX_RectF& rtClip,
+                  int32_t iBlock = 0);
+  bool IsLoaded() const { return m_pieceLines.GetSize() > 0; }
+  void Unload();
+  const CFX_ArrayTemplate<CXFA_PieceLine*>* GetPieceLines();
+
+  bool m_bHasBlock;
+  CFX_Int32Array m_Blocks;
+
+ private:
+  void GetTextDataNode();
+  CFDE_XMLNode* GetXMLContainerNode();
+  CFX_RTFBreak* CreateBreak(bool bDefault);
+  void InitBreak(FX_FLOAT fLineWidth);
+  void InitBreak(IFDE_CSSComputedStyle* pStyle,
+                 FDE_CSSDISPLAY eDisplay,
+                 FX_FLOAT fLineWidth,
+                 CFDE_XMLNode* pXMLNode,
+                 IFDE_CSSComputedStyle* pParentStyle = nullptr);
+  bool Loader(const CFX_SizeF& szText,
+              FX_FLOAT& fLinePos,
+              bool bSavePieces = true);
+  void LoadText(CXFA_Node* pNode,
+                const CFX_SizeF& szText,
+                FX_FLOAT& fLinePos,
+                bool bSavePieces);
+  bool LoadRichText(CFDE_XMLNode* pXMLNode,
+                    const CFX_SizeF& szText,
+                    FX_FLOAT& fLinePos,
+                    IFDE_CSSComputedStyle* pParentStyle,
+                    bool bSavePieces,
+                    CXFA_LinkUserData* pLinkData = nullptr,
+                    bool bEndBreak = true,
+                    bool bIsOl = false,
+                    int32_t iLiCount = 0);
+  bool AppendChar(const CFX_WideString& wsText,
+                  FX_FLOAT& fLinePos,
+                  FX_FLOAT fSpaceAbove,
+                  bool bSavePieces);
+  void AppendTextLine(uint32_t dwStatus,
+                      FX_FLOAT& fLinePos,
+                      bool bSavePieces,
+                      bool bEndBreak = false);
+  void EndBreak(uint32_t dwStatus, FX_FLOAT& fLinePos, bool bDefault);
+  bool IsEnd(bool bSavePieces);
+  void ProcessText(CFX_WideString& wsText);
+  void UpdateAlign(FX_FLOAT fHeight, FX_FLOAT fBottom);
+  void RenderString(CFDE_RenderDevice* pDevice,
+                    CFDE_Brush* pBrush,
+                    CXFA_PieceLine* pPieceLine,
+                    int32_t iPiece,
+                    FXTEXT_CHARPOS* pCharPos,
+                    const CFX_Matrix& tmDoc2Device);
+  void RenderPath(CFDE_RenderDevice* pDevice,
+                  CFDE_Pen* pPen,
+                  CXFA_PieceLine* pPieceLine,
+                  int32_t iPiece,
+                  FXTEXT_CHARPOS* pCharPos,
+                  const CFX_Matrix& tmDoc2Device);
+  int32_t GetDisplayPos(const XFA_TextPiece* pPiece,
+                        FXTEXT_CHARPOS* pCharPos,
+                        bool bCharCode = false);
+  bool ToRun(const XFA_TextPiece* pPiece, FX_RTFTEXTOBJ& tr);
+  void DoTabstops(IFDE_CSSComputedStyle* pStyle, CXFA_PieceLine* pPieceLine);
+  bool Layout(int32_t iBlock);
+  int32_t CountBlocks() const;
+
+  CXFA_TextProvider* m_pTextProvider;
+  CXFA_Node* m_pTextDataNode;
+  bool m_bRichText;
+  std::unique_ptr<IFX_MemoryAllocator> m_pAllocator;
+  std::unique_ptr<CFX_RTFBreak> m_pBreak;
+  std::unique_ptr<CXFA_LoaderContext> m_pLoader;
+  int32_t m_iLines;
+  FX_FLOAT m_fMaxWidth;
+  CXFA_TextParser m_textParser;
+  CFX_ArrayTemplate<CXFA_PieceLine*> m_pieceLines;
+  std::unique_ptr<CXFA_TextTabstopsContext> m_pTabstopContext;
+  bool m_bBlockContinue;
+};
+
+#endif  // XFA_FXFA_APP_CXFA_TEXTLAYOUT_H_