1 files changed, 136 insertions, 0 deletions
diff --git a/xfa/fxfa/cxfa_textlayout.h b/xfa/fxfa/cxfa_textlayout.h
new file mode 100644
index 0000000000..079fff8fe2
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+++ b/xfa/fxfa/cxfa_textlayout.h
@@ -0,0 +1,136 @@
+// 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_CXFA_TEXTLAYOUT_H_
+#define XFA_FXFA_CXFA_TEXTLAYOUT_H_
+
+#include <memory>
+#include <vector>
+
+#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/cfx_rtfbreak.h"
+#include "xfa/fxfa/cxfa_textparser.h"
+
+class CFDE_Brush;
+class CFDE_CSSComputedStyle;
+class CFDE_Pen;
+class CFDE_RenderDevice;
+class CFX_XMLNode;
+class CFX_RTFBreak;
+class CXFA_LoaderContext;
+class CXFA_LinkUserData;
+class CXFA_Node;
+class CXFA_PieceLine;
+class CXFA_TextProvider;
+class CXFA_TextTabstopsContext;
+class CXFA_TextPiece;
+
+class CXFA_TextLayout {
+ public:
+  explicit CXFA_TextLayout(CXFA_TextProvider* pTextProvider);
+  ~CXFA_TextLayout();
+
+  int32_t GetText(CFX_WideString& wsText);
+  float GetLayoutHeight();
+  float StartLayout(float fWidth = -1);
+  bool DoLayout(int32_t iBlockIndex,
+                float& fCalcHeight,
+                float fContentAreaHeight = -1,
+                float fTextHeight = -1);
+
+  bool CalcSize(const CFX_SizeF& minSize,
+                const CFX_SizeF& maxSize,
+                CFX_SizeF& defaultSize);
+  bool Layout(const CFX_SizeF& size, 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.empty(); }
+  void Unload();
+  const std::vector<std::unique_ptr<CXFA_PieceLine>>* GetPieceLines() const {
+    return &m_pieceLines;
+  }
+
+  bool m_bHasBlock;
+  std::vector<int32_t> m_Blocks;
+
+ private:
+  void GetTextDataNode();
+  CFX_XMLNode* GetXMLContainerNode();
+  std::unique_ptr<CFX_RTFBreak> CreateBreak(bool bDefault);
+  void InitBreak(float fLineWidth);
+  void InitBreak(CFDE_CSSComputedStyle* pStyle,
+                 FDE_CSSDisplay eDisplay,
+                 float fLineWidth,
+                 CFX_XMLNode* pXMLNode,
+                 CFDE_CSSComputedStyle* pParentStyle = nullptr);
+  bool Loader(const CFX_SizeF& szText,
+              float& fLinePos,
+              bool bSavePieces = true);
+  void LoadText(CXFA_Node* pNode,
+                const CFX_SizeF& szText,
+                float& fLinePos,
+                bool bSavePieces);
+  bool LoadRichText(CFX_XMLNode* pXMLNode,
+                    const CFX_SizeF& szText,
+                    float& fLinePos,
+                    const CFX_RetainPtr<CFDE_CSSComputedStyle>& pParentStyle,
+                    bool bSavePieces,
+                    CFX_RetainPtr<CXFA_LinkUserData> pLinkData,
+                    bool bEndBreak = true,
+                    bool bIsOl = false,
+                    int32_t iLiCount = 0);
+  bool AppendChar(const CFX_WideString& wsText,
+                  float& fLinePos,
+                  float fSpaceAbove,
+                  bool bSavePieces);
+  void AppendTextLine(CFX_BreakType dwStatus,
+                      float& fLinePos,
+                      bool bSavePieces,
+                      bool bEndBreak = false);
+  void EndBreak(CFX_BreakType dwStatus, float& fLinePos, bool bDefault);
+  bool IsEnd(bool bSavePieces);
+  void ProcessText(CFX_WideString& wsText);
+  void UpdateAlign(float fHeight, 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 CXFA_TextPiece* pPiece,
+                        FXTEXT_CHARPOS* pCharPos,
+                        bool bCharCode = false);
+  bool ToRun(const CXFA_TextPiece* pPiece, FX_RTFTEXTOBJ* tr);
+  void DoTabstops(CFDE_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<CFX_RTFBreak> m_pBreak;
+  std::unique_ptr<CXFA_LoaderContext> m_pLoader;
+  int32_t m_iLines;
+  float m_fMaxWidth;
+  CXFA_TextParser m_textParser;
+  std::vector<std::unique_ptr<CXFA_PieceLine>> m_pieceLines;
+  std::unique_ptr<CXFA_TextTabstopsContext> m_pTabstopContext;
+  bool m_bBlockContinue;
+};
+
+#endif  // XFA_FXFA_CXFA_TEXTLAYOUT_H_