Move xfa/fxfa/app to xfa/fxfachromium/3166

There currently exists a weird split where some files exist in xfa/fxfa
and some files exist in xfa/fxfa/app. This CL removes the app/ folder
and moves all files up to the parent directory.

Change-Id: I00c87851a1ebc5a7a636eb9a17b58ba3f1708a84
Reviewed-on: https://pdfium-review.googlesource.com/8810
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 1304 insertions, 0 deletions

diff --git a/xfa/fxfa/cxfa_textlayout.cpp b/xfa/fxfa/cxfa_textlayout.cpp
new file mode 100644
index 0000000000..138587c2fc
--- /dev/null
+++ b/xfa/fxfa/cxfa_textlayout.cpp
@@ -0,0 +1,1304 @@
+// 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
+
+#include "xfa/fxfa/cxfa_textlayout.h"
+
+#include <algorithm>
+#include <utility>
+
+#include "core/fxcrt/xml/cfx_xmlelement.h"
+#include "core/fxcrt/xml/cfx_xmlnode.h"
+#include "core/fxcrt/xml/cfx_xmltext.h"
+#include "third_party/base/ptr_util.h"
+#include "third_party/base/stl_util.h"
+#include "xfa/fde/cfde_brush.h"
+#include "xfa/fde/cfde_path.h"
+#include "xfa/fde/cfde_pen.h"
+#include "xfa/fde/cfde_renderdevice.h"
+#include "xfa/fde/css/cfde_csscomputedstyle.h"
+#include "xfa/fde/css/cfde_cssstyleselector.h"
+#include "xfa/fxfa/cxfa_linkuserdata.h"
+#include "xfa/fxfa/cxfa_loadercontext.h"
+#include "xfa/fxfa/cxfa_pieceline.h"
+#include "xfa/fxfa/cxfa_textparsecontext.h"
+#include "xfa/fxfa/cxfa_textpiece.h"
+#include "xfa/fxfa/cxfa_textprovider.h"
+#include "xfa/fxfa/cxfa_texttabstopscontext.h"
+#include "xfa/fxfa/cxfa_textuserdata.h"
+#include "xfa/fxfa/parser/cxfa_font.h"
+#include "xfa/fxfa/parser/cxfa_node.h"
+#include "xfa/fxfa/parser/cxfa_para.h"
+
+#define XFA_LOADERCNTXTFLG_FILTERSPACE 0x001
+
+CXFA_TextLayout::CXFA_TextLayout(CXFA_TextProvider* pTextProvider)
+    : m_bHasBlock(false),
+      m_pTextProvider(pTextProvider),
+      m_pTextDataNode(nullptr),
+      m_bRichText(false),
+      m_iLines(0),
+      m_fMaxWidth(0),
+      m_bBlockContinue(true) {
+  ASSERT(m_pTextProvider);
+}
+
+CXFA_TextLayout::~CXFA_TextLayout() {
+  m_textParser.Reset();
+  Unload();
+}
+
+void CXFA_TextLayout::Unload() {
+  m_pieceLines.clear();
+  m_pBreak.reset();
+}
+
+void CXFA_TextLayout::GetTextDataNode() {
+  if (!m_pTextProvider)
+    return;
+
+  CXFA_Node* pNode = m_pTextProvider->GetTextNode(m_bRichText);
+  if (pNode && m_bRichText)
+    m_textParser.Reset();
+
+  m_pTextDataNode = pNode;
+}
+
+CFX_XMLNode* CXFA_TextLayout::GetXMLContainerNode() {
+  if (!m_bRichText)
+    return nullptr;
+
+  CFX_XMLNode* pXMLRoot = m_pTextDataNode->GetXMLMappingNode();
+  if (!pXMLRoot)
+    return nullptr;
+
+  CFX_XMLNode* pXMLContainer = nullptr;
+  for (CFX_XMLNode* pXMLChild = pXMLRoot->GetNodeItem(CFX_XMLNode::FirstChild);
+       pXMLChild;
+       pXMLChild = pXMLChild->GetNodeItem(CFX_XMLNode::NextSibling)) {
+    if (pXMLChild->GetType() == FX_XMLNODE_Element) {
+      CFX_XMLElement* pXMLElement = static_cast<CFX_XMLElement*>(pXMLChild);
+      CFX_WideString wsTag = pXMLElement->GetLocalTagName();
+      if (wsTag == L"body" || wsTag == L"html") {
+        pXMLContainer = pXMLChild;
+        break;
+      }
+    }
+  }
+  return pXMLContainer;
+}
+
+std::unique_ptr<CFX_RTFBreak> CXFA_TextLayout::CreateBreak(bool bDefault) {
+  uint32_t dwStyle = FX_LAYOUTSTYLE_ExpandTab;
+  if (!bDefault)
+    dwStyle |= FX_LAYOUTSTYLE_Pagination;
+
+  auto pBreak = pdfium::MakeUnique<CFX_RTFBreak>(dwStyle);
+  pBreak->SetLineBreakTolerance(1);
+  pBreak->SetFont(m_textParser.GetFont(m_pTextProvider, nullptr));
+  pBreak->SetFontSize(m_textParser.GetFontSize(m_pTextProvider, nullptr));
+  return pBreak;
+}
+
+void CXFA_TextLayout::InitBreak(float fLineWidth) {
+  CXFA_Font font = m_pTextProvider->GetFontNode();
+  CXFA_Para para = m_pTextProvider->GetParaNode();
+  float fStart = 0;
+  float fStartPos = 0;
+  if (para) {
+    CFX_RTFLineAlignment iAlign = CFX_RTFLineAlignment::Left;
+    switch (para.GetHorizontalAlign()) {
+      case XFA_ATTRIBUTEENUM_Center:
+        iAlign = CFX_RTFLineAlignment::Center;
+        break;
+      case XFA_ATTRIBUTEENUM_Right:
+        iAlign = CFX_RTFLineAlignment::Right;
+        break;
+      case XFA_ATTRIBUTEENUM_Justify:
+        iAlign = CFX_RTFLineAlignment::Justified;
+        break;
+      case XFA_ATTRIBUTEENUM_JustifyAll:
+        iAlign = CFX_RTFLineAlignment::Distributed;
+        break;
+    }
+    m_pBreak->SetAlignment(iAlign);
+
+    fStart = para.GetMarginLeft();
+    if (m_pTextProvider->IsCheckButtonAndAutoWidth()) {
+      if (iAlign != CFX_RTFLineAlignment::Left)
+        fLineWidth -= para.GetMarginRight();
+    } else {
+      fLineWidth -= para.GetMarginRight();
+    }
+    if (fLineWidth < 0)
+      fLineWidth = fStart;
+
+    fStartPos = fStart;
+    float fIndent = para.GetTextIndent();
+    if (fIndent > 0)
+      fStartPos += fIndent;
+  }
+
+  m_pBreak->SetLineBoundary(fStart, fLineWidth);
+  m_pBreak->SetLineStartPos(fStartPos);
+  if (font) {
+    m_pBreak->SetHorizontalScale((int32_t)font.GetHorizontalScale());
+    m_pBreak->SetVerticalScale((int32_t)font.GetVerticalScale());
+    m_pBreak->SetCharSpace(font.GetLetterSpacing());
+  }
+
+  float fFontSize = m_textParser.GetFontSize(m_pTextProvider, nullptr);
+  m_pBreak->SetFontSize(fFontSize);
+  m_pBreak->SetFont(m_textParser.GetFont(m_pTextProvider, nullptr));
+  m_pBreak->SetLineBreakTolerance(fFontSize * 0.2f);
+}
+
+void CXFA_TextLayout::InitBreak(CFDE_CSSComputedStyle* pStyle,
+                                FDE_CSSDisplay eDisplay,
+                                float fLineWidth,
+                                CFX_XMLNode* pXMLNode,
+                                CFDE_CSSComputedStyle* pParentStyle) {
+  if (!pStyle) {
+    InitBreak(fLineWidth);
+    return;
+  }
+
+  if (eDisplay == FDE_CSSDisplay::Block ||
+      eDisplay == FDE_CSSDisplay::ListItem) {
+    CFX_RTFLineAlignment iAlign = CFX_RTFLineAlignment::Left;
+    switch (pStyle->GetTextAlign()) {
+      case FDE_CSSTextAlign::Right:
+        iAlign = CFX_RTFLineAlignment::Right;
+        break;
+      case FDE_CSSTextAlign::Center:
+        iAlign = CFX_RTFLineAlignment::Center;
+        break;
+      case FDE_CSSTextAlign::Justify:
+        iAlign = CFX_RTFLineAlignment::Justified;
+        break;
+      case FDE_CSSTextAlign::JustifyAll:
+        iAlign = CFX_RTFLineAlignment::Distributed;
+        break;
+      default:
+        break;
+    }
+    m_pBreak->SetAlignment(iAlign);
+
+    float fStart = 0;
+    const FDE_CSSRect* pRect = pStyle->GetMarginWidth();
+    const FDE_CSSRect* pPaddingRect = pStyle->GetPaddingWidth();
+    if (pRect) {
+      fStart = pRect->left.GetValue();
+      fLineWidth -= pRect->right.GetValue();
+      if (pPaddingRect) {
+        fStart += pPaddingRect->left.GetValue();
+        fLineWidth -= pPaddingRect->right.GetValue();
+      }
+      if (eDisplay == FDE_CSSDisplay::ListItem) {
+        const FDE_CSSRect* pParRect = pParentStyle->GetMarginWidth();
+        const FDE_CSSRect* pParPaddingRect = pParentStyle->GetPaddingWidth();
+        if (pParRect) {
+          fStart += pParRect->left.GetValue();
+          fLineWidth -= pParRect->right.GetValue();
+          if (pParPaddingRect) {
+            fStart += pParPaddingRect->left.GetValue();
+            fLineWidth -= pParPaddingRect->right.GetValue();
+          }
+        }
+        FDE_CSSRect pNewRect;
+        pNewRect.left.Set(FDE_CSSLengthUnit::Point, fStart);
+        pNewRect.right.Set(FDE_CSSLengthUnit::Point, pRect->right.GetValue());
+        pNewRect.top.Set(FDE_CSSLengthUnit::Point, pRect->top.GetValue());
+        pNewRect.bottom.Set(FDE_CSSLengthUnit::Point, pRect->bottom.GetValue());
+        pStyle->SetMarginWidth(pNewRect);
+      }
+    }
+    m_pBreak->SetLineBoundary(fStart, fLineWidth);
+    float fIndent = pStyle->GetTextIndent().GetValue();
+    if (fIndent > 0)
+      fStart += fIndent;
+
+    m_pBreak->SetLineStartPos(fStart);
+    m_pBreak->SetTabWidth(m_textParser.GetTabInterval(pStyle));
+    if (!m_pTabstopContext)
+      m_pTabstopContext = pdfium::MakeUnique<CXFA_TextTabstopsContext>();
+    m_textParser.GetTabstops(pStyle, m_pTabstopContext.get());
+    for (const auto& stop : m_pTabstopContext->m_tabstops)
+      m_pBreak->AddPositionedTab(stop.fTabstops);
+  }
+  float fFontSize = m_textParser.GetFontSize(m_pTextProvider, pStyle);
+  m_pBreak->SetFontSize(fFontSize);
+  m_pBreak->SetLineBreakTolerance(fFontSize * 0.2f);
+  m_pBreak->SetFont(m_textParser.GetFont(m_pTextProvider, pStyle));
+  m_pBreak->SetHorizontalScale(
+      m_textParser.GetHorScale(m_pTextProvider, pStyle, pXMLNode));
+  m_pBreak->SetVerticalScale(m_textParser.GetVerScale(m_pTextProvider, pStyle));
+  m_pBreak->SetCharSpace(pStyle->GetLetterSpacing().GetValue());
+}
+
+int32_t CXFA_TextLayout::GetText(CFX_WideString& wsText) {
+  GetTextDataNode();
+  wsText.clear();
+  if (!m_bRichText)
+    wsText = m_pTextDataNode->GetContent();
+  return wsText.GetLength();
+}
+
+float CXFA_TextLayout::GetLayoutHeight() {
+  if (!m_pLoader)
+    return 0;
+
+  if (m_pLoader->m_lineHeights.empty() && m_pLoader->m_fWidth > 0) {
+    CFX_SizeF szMax(m_pLoader->m_fWidth, m_pLoader->m_fHeight);
+    CFX_SizeF szDef;
+    m_pLoader->m_bSaveLineHeight = true;
+    m_pLoader->m_fLastPos = 0;
+    CalcSize(szMax, szMax, szDef);
+    m_pLoader->m_bSaveLineHeight = false;
+    return szDef.height;
+  }
+
+  float fHeight = m_pLoader->m_fHeight;
+  if (fHeight < 0.1f) {
+    fHeight = 0;
+    for (float value : m_pLoader->m_lineHeights)
+      fHeight += value;
+  }
+  return fHeight;
+}
+
+float CXFA_TextLayout::StartLayout(float fWidth) {
+  if (!m_pLoader)
+    m_pLoader = pdfium::MakeUnique<CXFA_LoaderContext>();
+
+  if (fWidth < 0 ||
+      (m_pLoader->m_fWidth > -1 && fabs(fWidth - m_pLoader->m_fWidth) > 0)) {
+    m_pLoader->m_lineHeights.clear();
+    m_Blocks.clear();
+    Unload();
+    m_pLoader->m_fStartLineOffset = 0;
+  }
+  m_pLoader->m_fWidth = fWidth;
+
+  if (fWidth < 0) {
+    CFX_SizeF szMax;
+    CFX_SizeF szDef;
+    m_pLoader->m_bSaveLineHeight = true;
+    m_pLoader->m_fLastPos = 0;
+    CalcSize(szMax, szMax, szDef);
+    m_pLoader->m_bSaveLineHeight = false;
+    fWidth = szDef.width;
+  }
+  return fWidth;
+}
+
+bool CXFA_TextLayout::DoLayout(int32_t iBlockIndex,
+                               float& fCalcHeight,
+                               float fContentAreaHeight,
+                               float fTextHeight) {
+  if (!m_pLoader)
+    return false;
+
+  int32_t iBlockCount = pdfium::CollectionSize<int32_t>(m_Blocks);
+  float fHeight = fTextHeight;
+  if (fHeight < 0)
+    fHeight = GetLayoutHeight();
+
+  m_pLoader->m_fHeight = fHeight;
+  if (fContentAreaHeight < 0)
+    return false;
+
+  m_bHasBlock = true;
+  if (iBlockCount == 0 && fHeight > 0) {
+    fHeight = fTextHeight - GetLayoutHeight();
+    if (fHeight > 0) {
+      int32_t iAlign = m_textParser.GetVAlign(m_pTextProvider);
+      if (iAlign == XFA_ATTRIBUTEENUM_Middle)
+        fHeight /= 2.0f;
+      else if (iAlign != XFA_ATTRIBUTEENUM_Bottom)
+        fHeight = 0;
+      m_pLoader->m_fStartLineOffset = fHeight;
+    }
+  }
+
+  float fLinePos = m_pLoader->m_fStartLineOffset;
+  int32_t iLineIndex = 0;
+  if (iBlockCount > 1) {
+    if (iBlockCount >= (iBlockIndex + 1) * 2) {
+      iLineIndex = m_Blocks[iBlockIndex * 2];
+    } else {
+      iLineIndex = m_Blocks[iBlockCount - 1] + m_Blocks[iBlockCount - 2];
+    }
+    if (!m_pLoader->m_BlocksHeight.empty()) {
+      for (int32_t i = 0; i < iBlockIndex; i++)
+        fLinePos -= m_pLoader->m_BlocksHeight[i * 2 + 1];
+    }
+  }
+
+  int32_t iCount = pdfium::CollectionSize<int32_t>(m_pLoader->m_lineHeights);
+  int32_t i = 0;
+  for (i = iLineIndex; i < iCount; i++) {
+    float fLineHeight = m_pLoader->m_lineHeights[i];
+    if (i == iLineIndex && fLineHeight - fContentAreaHeight > 0.001) {
+      fCalcHeight = 0;
+      return true;
+    }
+    if (fLinePos + fLineHeight - fContentAreaHeight > 0.001) {
+      if (iBlockCount >= (iBlockIndex + 1) * 2) {
+        m_Blocks[iBlockIndex * 2] = iLineIndex;
+        m_Blocks[iBlockIndex * 2 + 1] = i - iLineIndex;
+      } else {
+        m_Blocks.push_back(iLineIndex);
+        m_Blocks.push_back(i - iLineIndex);
+      }
+      if (i == iLineIndex) {
+        if (fCalcHeight <= fLinePos) {
+          if (pdfium::CollectionSize<int32_t>(m_pLoader->m_BlocksHeight) >
+                  iBlockIndex * 2 &&
+              (m_pLoader->m_BlocksHeight[iBlockIndex * 2] == iBlockIndex)) {
+            m_pLoader->m_BlocksHeight[iBlockIndex * 2 + 1] = fCalcHeight;
+          } else {
+            m_pLoader->m_BlocksHeight.push_back((float)iBlockIndex);
+            m_pLoader->m_BlocksHeight.push_back(fCalcHeight);
+          }
+        }
+        return true;
+      }
+
+      fCalcHeight = fLinePos;
+      return true;
+    }
+    fLinePos += fLineHeight;
+  }
+  return false;
+}
+
+int32_t CXFA_TextLayout::CountBlocks() const {
+  int32_t iCount = pdfium::CollectionSize<int32_t>(m_Blocks) / 2;
+  return iCount > 0 ? iCount : 1;
+}
+
+bool CXFA_TextLayout::CalcSize(const CFX_SizeF& minSize,
+                               const CFX_SizeF& maxSize,
+                               CFX_SizeF& defaultSize) {
+  defaultSize.width = maxSize.width;
+  if (defaultSize.width < 1)
+    defaultSize.width = 0xFFFF;
+
+  m_pBreak = CreateBreak(false);
+  float fLinePos = 0;
+  m_iLines = 0;
+  m_fMaxWidth = 0;
+  Loader(defaultSize, fLinePos, false);
+  if (fLinePos < 0.1f)
+    fLinePos = m_textParser.GetFontSize(m_pTextProvider, nullptr);
+
+  m_pTabstopContext.reset();
+  defaultSize = CFX_SizeF(m_fMaxWidth, fLinePos);
+  return true;
+}
+
+bool CXFA_TextLayout::Layout(const CFX_SizeF& size, float* fHeight) {
+  if (size.width < 1)
+    return false;
+
+  Unload();
+  m_pBreak = CreateBreak(true);
+  if (m_pLoader) {
+    m_pLoader->m_iTotalLines = -1;
+    m_pLoader->m_iChar = 0;
+  }
+
+  m_iLines = 0;
+  float fLinePos = 0;
+  Loader(size, fLinePos, true);
+  UpdateAlign(size.height, fLinePos);
+  m_pTabstopContext.reset();
+  if (fHeight)
+    *fHeight = fLinePos;
+  return true;
+}
+
+bool CXFA_TextLayout::Layout(int32_t iBlock) {
+  if (!m_pLoader || iBlock < 0 || iBlock >= CountBlocks())
+    return false;
+  if (m_pLoader->m_fWidth < 1)
+    return false;
+
+  m_pLoader->m_iTotalLines = -1;
+  m_iLines = 0;
+  float fLinePos = 0;
+  CXFA_Node* pNode = nullptr;
+  CFX_SizeF szText(m_pLoader->m_fWidth, m_pLoader->m_fHeight);
+  int32_t iCount = pdfium::CollectionSize<int32_t>(m_Blocks);
+  int32_t iBlocksHeightCount =
+      pdfium::CollectionSize<int32_t>(m_pLoader->m_BlocksHeight);
+  iBlocksHeightCount /= 2;
+  if (iBlock < iBlocksHeightCount)
+    return true;
+  if (iBlock == iBlocksHeightCount) {
+    Unload();
+    m_pBreak = CreateBreak(true);
+    fLinePos = m_pLoader->m_fStartLineOffset;
+    for (int32_t i = 0; i < iBlocksHeightCount; i++)
+      fLinePos -= m_pLoader->m_BlocksHeight[i * 2 + 1];
+
+    m_pLoader->m_iChar = 0;
+    if (iCount > 1)
+      m_pLoader->m_iTotalLines = m_Blocks[iBlock * 2 + 1];
+
+    Loader(szText, fLinePos, true);
+    if (iCount == 0 && m_pLoader->m_fStartLineOffset < 0.1f)
+      UpdateAlign(szText.height, fLinePos);
+  } else if (m_pTextDataNode) {
+    iBlock *= 2;
+    if (iBlock < iCount - 2)
+      m_pLoader->m_iTotalLines = m_Blocks[iBlock + 1];
+
+    m_pBreak->Reset();
+    if (m_bRichText) {
+      CFX_XMLNode* pContainerNode = GetXMLContainerNode();
+      if (!pContainerNode)
+        return true;
+
+      CFX_XMLNode* pXMLNode = m_pLoader->m_pXMLNode;
+      if (!pXMLNode)
+        return true;
+
+      CFX_XMLNode* pSaveXMLNode = m_pLoader->m_pXMLNode;
+      for (; pXMLNode;
+           pXMLNode = pXMLNode->GetNodeItem(CFX_XMLNode::NextSibling)) {
+        if (!LoadRichText(pXMLNode, szText, fLinePos, m_pLoader->m_pParentStyle,
+                          true, nullptr)) {
+          break;
+        }
+      }
+      while (!pXMLNode) {
+        pXMLNode = pSaveXMLNode->GetNodeItem(CFX_XMLNode::Parent);
+        if (pXMLNode == pContainerNode)
+          break;
+        if (!LoadRichText(pXMLNode, szText, fLinePos, m_pLoader->m_pParentStyle,
+                          true, nullptr, false)) {
+          break;
+        }
+        pSaveXMLNode = pXMLNode;
+        pXMLNode = pXMLNode->GetNodeItem(CFX_XMLNode::NextSibling);
+        if (!pXMLNode)
+          continue;
+        for (; pXMLNode;
+             pXMLNode = pXMLNode->GetNodeItem(CFX_XMLNode::NextSibling)) {
+          if (!LoadRichText(pXMLNode, szText, fLinePos,
+                            m_pLoader->m_pParentStyle, true, nullptr)) {
+            break;
+          }
+        }
+      }
+    } else {
+      pNode = m_pLoader->m_pNode;
+      if (!pNode)
+        return true;
+      LoadText(pNode, szText, fLinePos, true);
+    }
+  }
+  if (iBlock == iCount) {
+    m_pTabstopContext.reset();
+    m_pLoader.reset();
+  }
+  return true;
+}
+
+void CXFA_TextLayout::ItemBlocks(const CFX_RectF& rtText, int32_t iBlockIndex) {
+  if (!m_pLoader)
+    return;
+
+  int32_t iCountHeight =
+      pdfium::CollectionSize<int32_t>(m_pLoader->m_lineHeights);
+  if (iCountHeight == 0)
+    return;
+
+  bool bEndItem = true;
+  int32_t iBlockCount = pdfium::CollectionSize<int32_t>(m_Blocks);
+  float fLinePos = m_pLoader->m_fStartLineOffset;
+  int32_t iLineIndex = 0;
+  if (iBlockIndex > 0) {
+    int32_t iBlockHeightCount =
+        pdfium::CollectionSize<int32_t>(m_pLoader->m_BlocksHeight);
+    iBlockHeightCount /= 2;
+    if (iBlockHeightCount >= iBlockIndex) {
+      for (int32_t i = 0; i < iBlockIndex; i++)
+        fLinePos -= m_pLoader->m_BlocksHeight[i * 2 + 1];
+    } else {
+      fLinePos = 0;
+    }
+    iLineIndex = m_Blocks[iBlockCount - 1] + m_Blocks[iBlockCount - 2];
+  }
+
+  int32_t i = 0;
+  for (i = iLineIndex; i < iCountHeight; i++) {
+    float fLineHeight = m_pLoader->m_lineHeights[i];
+    if (fLinePos + fLineHeight - rtText.height > 0.001) {
+      m_Blocks.push_back(iLineIndex);
+      m_Blocks.push_back(i - iLineIndex);
+      bEndItem = false;
+      break;
+    }
+    fLinePos += fLineHeight;
+  }
+  if (iCountHeight > 0 && (i - iLineIndex) > 0 && bEndItem) {
+    m_Blocks.push_back(iLineIndex);
+    m_Blocks.push_back(i - iLineIndex);
+  }
+}
+
+bool CXFA_TextLayout::DrawString(CFX_RenderDevice* pFxDevice,
+                                 const CFX_Matrix& tmDoc2Device,
+                                 const CFX_RectF& rtClip,
+                                 int32_t iBlock) {
+  if (!pFxDevice)
+    return false;
+
+  auto pDevice = pdfium::MakeUnique<CFDE_RenderDevice>(pFxDevice);
+  pDevice->SaveState();
+  pDevice->SetClipRect(rtClip);
+
+  auto pSolidBrush = pdfium::MakeUnique<CFDE_Brush>();
+  auto pPen = pdfium::MakeUnique<CFDE_Pen>();
+  if (m_pieceLines.empty()) {
+    int32_t iBlockCount = CountBlocks();
+    for (int32_t i = 0; i < iBlockCount; i++)
+      Layout(i);
+  }
+
+  FXTEXT_CHARPOS* pCharPos = nullptr;
+  int32_t iCharCount = 0;
+  int32_t iLineStart = 0;
+  int32_t iPieceLines = pdfium::CollectionSize<int32_t>(m_pieceLines);
+  int32_t iCount = pdfium::CollectionSize<int32_t>(m_Blocks);
+  if (iCount > 0) {
+    iBlock *= 2;
+    if (iBlock < iCount) {
+      iLineStart = m_Blocks[iBlock];
+      iPieceLines = m_Blocks[iBlock + 1];
+    } else {
+      iPieceLines = 0;
+    }
+  }
+
+  for (int32_t i = 0; i < iPieceLines; i++) {
+    if (i + iLineStart >= pdfium::CollectionSize<int32_t>(m_pieceLines))
+      break;
+
+    CXFA_PieceLine* pPieceLine = m_pieceLines[i + iLineStart].get();
+    int32_t iPieces = pdfium::CollectionSize<int32_t>(pPieceLine->m_textPieces);
+    int32_t j = 0;
+    for (j = 0; j < iPieces; j++) {
+      const CXFA_TextPiece* pPiece = pPieceLine->m_textPieces[j].get();
+      int32_t iChars = pPiece->iChars;
+      if (iCharCount < iChars) {
+        FX_Free(pCharPos);
+        pCharPos = FX_Alloc(FXTEXT_CHARPOS, iChars);
+        iCharCount = iChars;
+      }
+      memset(pCharPos, 0, iCharCount * sizeof(FXTEXT_CHARPOS));
+      RenderString(pDevice.get(), pSolidBrush.get(), pPieceLine, j, pCharPos,
+                   tmDoc2Device);
+    }
+    for (j = 0; j < iPieces; j++) {
+      RenderPath(pDevice.get(), pPen.get(), pPieceLine, j, pCharPos,
+                 tmDoc2Device);
+    }
+  }
+  pDevice->RestoreState();
+  FX_Free(pCharPos);
+  return iPieceLines > 0;
+}
+
+void CXFA_TextLayout::UpdateAlign(float fHeight, float fBottom) {
+  fHeight -= fBottom;
+  if (fHeight < 0.1f)
+    return;
+
+  switch (m_textParser.GetVAlign(m_pTextProvider)) {
+    case XFA_ATTRIBUTEENUM_Middle:
+      fHeight /= 2.0f;
+      break;
+    case XFA_ATTRIBUTEENUM_Bottom:
+      break;
+    default:
+      return;
+  }
+
+  for (const auto& pPieceLine : m_pieceLines) {
+    for (const auto& pPiece : pPieceLine->m_textPieces)
+      pPiece->rtPiece.top += fHeight;
+  }
+}
+
+bool CXFA_TextLayout::Loader(const CFX_SizeF& szText,
+                             float& fLinePos,
+                             bool bSavePieces) {
+  GetTextDataNode();
+  if (!m_pTextDataNode)
+    return true;
+
+  if (m_bRichText) {
+    CFX_XMLNode* pXMLContainer = GetXMLContainerNode();
+    if (pXMLContainer) {
+      if (!m_textParser.IsParsed())
+        m_textParser.DoParse(pXMLContainer, m_pTextProvider);
+
+      auto pRootStyle = m_textParser.CreateRootStyle(m_pTextProvider);
+      LoadRichText(pXMLContainer, szText, fLinePos, pRootStyle, bSavePieces,
+                   nullptr);
+    }
+  } else {
+    LoadText(m_pTextDataNode, szText, fLinePos, bSavePieces);
+  }
+  return true;
+}
+
+void CXFA_TextLayout::LoadText(CXFA_Node* pNode,
+                               const CFX_SizeF& szText,
+                               float& fLinePos,
+                               bool bSavePieces) {
+  InitBreak(szText.width);
+
+  CXFA_Para para = m_pTextProvider->GetParaNode();
+  float fSpaceAbove = 0;
+  if (para) {
+    fSpaceAbove = para.GetSpaceAbove();
+    if (fSpaceAbove < 0.1f) {
+      fSpaceAbove = 0;
+    }
+    int32_t verAlign = para.GetVerticalAlign();
+    switch (verAlign) {
+      case XFA_ATTRIBUTEENUM_Top:
+      case XFA_ATTRIBUTEENUM_Middle:
+      case XFA_ATTRIBUTEENUM_Bottom: {
+        fLinePos += fSpaceAbove;
+        break;
+      }
+    }
+  }
+
+  CFX_WideString wsText = pNode->GetContent();
+  wsText.TrimRight(L" ");
+  bool bRet = AppendChar(wsText, fLinePos, fSpaceAbove, bSavePieces);
+  if (bRet && m_pLoader)
+    m_pLoader->m_pNode = pNode;
+  else
+    EndBreak(CFX_BreakType::Paragraph, fLinePos, bSavePieces);
+}
+
+bool CXFA_TextLayout::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,
+    bool bIsOl,
+    int32_t iLiCount) {
+  if (!pXMLNode)
+    return false;
+
+  CXFA_TextParseContext* pContext =
+      m_textParser.GetParseContextFromMap(pXMLNode);
+  FDE_CSSDisplay eDisplay = FDE_CSSDisplay::None;
+  bool bContentNode = false;
+  float fSpaceBelow = 0;
+  CFX_RetainPtr<CFDE_CSSComputedStyle> pStyle;
+  CFX_WideString wsName;
+  if (bEndBreak) {
+    bool bCurOl = false;
+    bool bCurLi = false;
+    CFX_XMLElement* pElement = nullptr;
+    if (pContext) {
+      if (m_bBlockContinue ||
+          (m_pLoader && pXMLNode == m_pLoader->m_pXMLNode)) {
+        m_bBlockContinue = true;
+      }
+      if (pXMLNode->GetType() == FX_XMLNODE_Text) {
+        bContentNode = true;
+      } else if (pXMLNode->GetType() == FX_XMLNODE_Element) {
+        pElement = static_cast<CFX_XMLElement*>(pXMLNode);
+        wsName = pElement->GetLocalTagName();
+      }
+      if (wsName == L"ol") {
+        bIsOl = true;
+        bCurOl = true;
+      }
+      if (m_bBlockContinue || bContentNode == false) {
+        eDisplay = pContext->GetDisplay();
+        if (eDisplay != FDE_CSSDisplay::Block &&
+            eDisplay != FDE_CSSDisplay::Inline &&
+            eDisplay != FDE_CSSDisplay::ListItem) {
+          return true;
+        }
+
+        pStyle = m_textParser.ComputeStyle(pXMLNode, pParentStyle.Get());
+        InitBreak(bContentNode ? pParentStyle.Get() : pStyle.Get(), eDisplay,
+                  szText.width, pXMLNode, pParentStyle.Get());
+        if ((eDisplay == FDE_CSSDisplay::Block ||
+             eDisplay == FDE_CSSDisplay::ListItem) &&
+            pStyle &&
+            (wsName.IsEmpty() || (wsName != L"body" && wsName != L"html" &&
+                                  wsName != L"ol" && wsName != L"ul"))) {
+          const FDE_CSSRect* pRect = pStyle->GetMarginWidth();
+          if (pRect) {
+            fLinePos += pRect->top.GetValue();
+            fSpaceBelow = pRect->bottom.GetValue();
+          }
+        }
+
+        if (wsName == L"a") {
+          ASSERT(pElement);
+          CFX_WideString wsLinkContent = pElement->GetString(L"href");
+          if (!wsLinkContent.IsEmpty()) {
+            pLinkData = pdfium::MakeRetain<CXFA_LinkUserData>(
+                wsLinkContent.GetBuffer(wsLinkContent.GetLength()));
+            wsLinkContent.ReleaseBuffer(wsLinkContent.GetLength());
+          }
+        }
+
+        int32_t iTabCount = m_textParser.CountTabs(
+            bContentNode ? pParentStyle.Get() : pStyle.Get());
+        bool bSpaceRun = m_textParser.IsSpaceRun(
+            bContentNode ? pParentStyle.Get() : pStyle.Get());
+        CFX_WideString wsText;
+        if (bContentNode && iTabCount == 0) {
+          wsText = static_cast<CFX_XMLText*>(pXMLNode)->GetText();
+        } else if (wsName == L"br") {
+          wsText = L'\n';
+        } else if (wsName == L"li") {
+          bCurLi = true;
+          if (bIsOl)
+            wsText.Format(L"%d.  ", iLiCount);
+          else
+            wsText = 0x00B7 + CFX_WideStringC(L"  ", 1);
+        } else if (!bContentNode) {
+          if (iTabCount > 0) {
+            while (iTabCount-- > 0)
+              wsText += L'\t';
+          } else {
+            m_textParser.GetEmbbedObj(m_pTextProvider, pXMLNode, wsText);
+          }
+        }
+
+        int32_t iLength = wsText.GetLength();
+        if (iLength > 0 && bContentNode && !bSpaceRun)
+          ProcessText(wsText);
+
+        if (m_pLoader) {
+          if (wsText.GetLength() > 0 &&
+              (m_pLoader->m_dwFlags & XFA_LOADERCNTXTFLG_FILTERSPACE)) {
+            wsText.TrimLeft(0x20);
+          }
+          if (FDE_CSSDisplay::Block == eDisplay) {
+            m_pLoader->m_dwFlags |= XFA_LOADERCNTXTFLG_FILTERSPACE;
+          } else if (FDE_CSSDisplay::Inline == eDisplay &&
+                     (m_pLoader->m_dwFlags & XFA_LOADERCNTXTFLG_FILTERSPACE)) {
+            m_pLoader->m_dwFlags &= ~XFA_LOADERCNTXTFLG_FILTERSPACE;
+          } else if (wsText.GetLength() > 0 &&
+                     (0x20 == wsText.GetAt(wsText.GetLength() - 1))) {
+            m_pLoader->m_dwFlags |= XFA_LOADERCNTXTFLG_FILTERSPACE;
+          } else if (wsText.GetLength() != 0) {
+            m_pLoader->m_dwFlags &= ~XFA_LOADERCNTXTFLG_FILTERSPACE;
+          }
+        }
+
+        if (wsText.GetLength() > 0) {
+          if (!m_pLoader || m_pLoader->m_iChar == 0) {
+            auto pUserData = pdfium::MakeRetain<CXFA_TextUserData>(
+                bContentNode ? pParentStyle : pStyle, pLinkData);
+            m_pBreak->SetUserData(pUserData);
+          }
+
+          if (AppendChar(wsText, fLinePos, 0, bSavePieces)) {
+            if (m_pLoader)
+              m_pLoader->m_dwFlags &= ~XFA_LOADERCNTXTFLG_FILTERSPACE;
+            if (IsEnd(bSavePieces)) {
+              if (m_pLoader && m_pLoader->m_iTotalLines > -1) {
+                m_pLoader->m_pXMLNode = pXMLNode;
+                m_pLoader->m_pParentStyle = pParentStyle;
+              }
+              return false;
+            }
+            return true;
+          }
+        }
+      }
+    }
+
+    for (CFX_XMLNode* pChildNode =
+             pXMLNode->GetNodeItem(CFX_XMLNode::FirstChild);
+         pChildNode;
+         pChildNode = pChildNode->GetNodeItem(CFX_XMLNode::NextSibling)) {
+      if (bCurOl)
+        iLiCount++;
+
+      if (!LoadRichText(pChildNode, szText, fLinePos,
+                        pContext ? pStyle : pParentStyle, bSavePieces,
+                        pLinkData, true, bIsOl, iLiCount))
+        return false;
+    }
+
+    if (m_pLoader) {
+      if (FDE_CSSDisplay::Block == eDisplay)
+        m_pLoader->m_dwFlags |= XFA_LOADERCNTXTFLG_FILTERSPACE;
+    }
+    if (bCurLi)
+      EndBreak(CFX_BreakType::Line, fLinePos, bSavePieces);
+  } else {
+    if (pContext)
+      eDisplay = pContext->GetDisplay();
+  }
+
+  if (m_bBlockContinue) {
+    if (pContext && !bContentNode) {
+      CFX_BreakType dwStatus = (eDisplay == FDE_CSSDisplay::Block)
+                                   ? CFX_BreakType::Paragraph
+                                   : CFX_BreakType::Piece;
+      EndBreak(dwStatus, fLinePos, bSavePieces);
+      if (eDisplay == FDE_CSSDisplay::Block) {
+        fLinePos += fSpaceBelow;
+        if (m_pTabstopContext)
+          m_pTabstopContext->RemoveAll();
+      }
+      if (IsEnd(bSavePieces)) {
+        if (m_pLoader && m_pLoader->m_iTotalLines > -1) {
+          m_pLoader->m_pXMLNode =
+              pXMLNode->GetNodeItem(CFX_XMLNode::NextSibling);
+          m_pLoader->m_pParentStyle = pParentStyle;
+        }
+        return false;
+      }
+    }
+  }
+  return true;
+}
+
+bool CXFA_TextLayout::AppendChar(const CFX_WideString& wsText,
+                                 float& fLinePos,
+                                 float fSpaceAbove,
+                                 bool bSavePieces) {
+  CFX_BreakType dwStatus = CFX_BreakType::None;
+  int32_t iChar = 0;
+  if (m_pLoader)
+    iChar = m_pLoader->m_iChar;
+
+  int32_t iLength = wsText.GetLength();
+  for (int32_t i = iChar; i < iLength; i++) {
+    wchar_t wch = wsText.GetAt(i);
+    if (wch == 0xA0)
+      wch = 0x20;
+
+    dwStatus = m_pBreak->AppendChar(wch);
+    if (dwStatus != CFX_BreakType::None && dwStatus != CFX_BreakType::Piece) {
+      AppendTextLine(dwStatus, fLinePos, bSavePieces);
+      if (IsEnd(bSavePieces)) {
+        if (m_pLoader)
+          m_pLoader->m_iChar = i;
+        return true;
+      }
+      if (dwStatus == CFX_BreakType::Paragraph && m_bRichText)
+        fLinePos += fSpaceAbove;
+    }
+  }
+  if (m_pLoader)
+    m_pLoader->m_iChar = 0;
+
+  return false;
+}
+
+bool CXFA_TextLayout::IsEnd(bool bSavePieces) {
+  if (!bSavePieces)
+    return false;
+  if (m_pLoader && m_pLoader->m_iTotalLines > 0)
+    return m_iLines >= m_pLoader->m_iTotalLines;
+  return false;
+}
+
+void CXFA_TextLayout::ProcessText(CFX_WideString& wsText) {
+  int32_t iLen = wsText.GetLength();
+  if (iLen == 0)
+    return;
+
+  wchar_t* psz = wsText.GetBuffer(iLen);
+  int32_t iTrimLeft = 0;
+  wchar_t wch = 0, wPrev = 0;
+  for (int32_t i = 0; i < iLen; i++) {
+    wch = psz[i];
+    if (wch < 0x20)
+      wch = 0x20;
+    if (wch == 0x20 && wPrev == 0x20)
+      continue;
+
+    wPrev = wch;
+    psz[iTrimLeft++] = wch;
+  }
+  wsText.ReleaseBuffer(iLen);
+  wsText = wsText.Left(iTrimLeft);
+}
+
+void CXFA_TextLayout::EndBreak(CFX_BreakType dwStatus,
+                               float& fLinePos,
+                               bool bSavePieces) {
+  dwStatus = m_pBreak->EndBreak(dwStatus);
+  if (dwStatus != CFX_BreakType::None && dwStatus != CFX_BreakType::Piece)
+    AppendTextLine(dwStatus, fLinePos, bSavePieces, true);
+}
+
+void CXFA_TextLayout::DoTabstops(CFDE_CSSComputedStyle* pStyle,
+                                 CXFA_PieceLine* pPieceLine) {
+  if (!pStyle || !pPieceLine)
+    return;
+
+  if (!m_pTabstopContext || m_pTabstopContext->m_tabstops.empty())
+    return;
+
+  int32_t iPieces = pdfium::CollectionSize<int32_t>(pPieceLine->m_textPieces);
+  if (iPieces == 0)
+    return;
+
+  CXFA_TextPiece* pPiece = pPieceLine->m_textPieces[iPieces - 1].get();
+  int32_t& iTabstopsIndex = m_pTabstopContext->m_iTabIndex;
+  int32_t iCount = m_textParser.CountTabs(pStyle);
+  if (!pdfium::IndexInBounds(m_pTabstopContext->m_tabstops, iTabstopsIndex))
+    return;
+
+  if (iCount > 0) {
+    iTabstopsIndex++;
+    m_pTabstopContext->m_bTabstops = true;
+    float fRight = 0;
+    if (iPieces > 1) {
+      CXFA_TextPiece* p = pPieceLine->m_textPieces[iPieces - 2].get();
+      fRight = p->rtPiece.right();
+    }
+    m_pTabstopContext->m_fTabWidth =
+        pPiece->rtPiece.width + pPiece->rtPiece.left - fRight;
+  } else if (iTabstopsIndex > -1) {
+    float fLeft = 0;
+    if (m_pTabstopContext->m_bTabstops) {
+      uint32_t dwAlign = m_pTabstopContext->m_tabstops[iTabstopsIndex].dwAlign;
+      if (dwAlign == FX_HashCode_GetW(L"center", false)) {
+        fLeft = pPiece->rtPiece.width / 2.0f;
+      } else if (dwAlign == FX_HashCode_GetW(L"right", false) ||
+                 dwAlign == FX_HashCode_GetW(L"before", false)) {
+        fLeft = pPiece->rtPiece.width;
+      } else if (dwAlign == FX_HashCode_GetW(L"decimal", false)) {
+        int32_t iChars = pPiece->iChars;
+        for (int32_t i = 0; i < iChars; i++) {
+          if (pPiece->szText[i] == L'.')
+            break;
+
+          fLeft += pPiece->Widths[i] / 20000.0f;
+        }
+      }
+      m_pTabstopContext->m_fLeft =
+          std::min(fLeft, m_pTabstopContext->m_fTabWidth);
+      m_pTabstopContext->m_bTabstops = false;
+      m_pTabstopContext->m_fTabWidth = 0;
+    }
+    pPiece->rtPiece.left -= m_pTabstopContext->m_fLeft;
+  }
+}
+
+void CXFA_TextLayout::AppendTextLine(CFX_BreakType dwStatus,
+                                     float& fLinePos,
+                                     bool bSavePieces,
+                                     bool bEndBreak) {
+  int32_t iPieces = m_pBreak->CountBreakPieces();
+  if (iPieces < 1)
+    return;
+
+  CFX_RetainPtr<CFDE_CSSComputedStyle> pStyle;
+  if (bSavePieces) {
+    auto pNew = pdfium::MakeUnique<CXFA_PieceLine>();
+    CXFA_PieceLine* pPieceLine = pNew.get();
+    m_pieceLines.push_back(std::move(pNew));
+    if (m_pTabstopContext)
+      m_pTabstopContext->Reset();
+
+    float fLineStep = 0, fBaseLine = 0;
+    int32_t i = 0;
+    for (i = 0; i < iPieces; i++) {
+      const CFX_BreakPiece* pPiece = m_pBreak->GetBreakPieceUnstable(i);
+      CXFA_TextUserData* pUserData = pPiece->m_pUserData.Get();
+      if (pUserData)
+        pStyle = pUserData->m_pStyle;
+      float fVerScale = pPiece->m_iVerticalScale / 100.0f;
+
+      auto pTP = pdfium::MakeUnique<CXFA_TextPiece>();
+      pTP->iChars = pPiece->m_iChars;
+      pTP->szText = pPiece->GetString();
+      pTP->Widths = pPiece->GetWidths();
+      pTP->iBidiLevel = pPiece->m_iBidiLevel;
+      pTP->iHorScale = pPiece->m_iHorizontalScale;
+      pTP->iVerScale = pPiece->m_iVerticalScale;
+      m_textParser.GetUnderline(m_pTextProvider, pStyle.Get(), pTP->iUnderline,
+                                pTP->iPeriod);
+      m_textParser.GetLinethrough(m_pTextProvider, pStyle.Get(),
+                                  pTP->iLineThrough);
+      pTP->dwColor = m_textParser.GetColor(m_pTextProvider, pStyle.Get());
+      pTP->pFont = m_textParser.GetFont(m_pTextProvider, pStyle.Get());
+      pTP->fFontSize = m_textParser.GetFontSize(m_pTextProvider, pStyle.Get());
+      pTP->rtPiece.left = pPiece->m_iStartPos / 20000.0f;
+      pTP->rtPiece.width = pPiece->m_iWidth / 20000.0f;
+      pTP->rtPiece.height = (float)pPiece->m_iFontSize * fVerScale / 20.0f;
+      float fBaseLineTemp =
+          m_textParser.GetBaseline(m_pTextProvider, pStyle.Get());
+      pTP->rtPiece.top = fBaseLineTemp;
+
+      float fLineHeight = m_textParser.GetLineHeight(
+          m_pTextProvider, pStyle.Get(), m_iLines == 0, fVerScale);
+      if (fBaseLineTemp > 0) {
+        float fLineHeightTmp = fBaseLineTemp + pTP->rtPiece.height;
+        if (fLineHeight < fLineHeightTmp)
+          fLineHeight = fLineHeightTmp;
+        else
+          fBaseLineTemp = 0;
+      } else if (fBaseLine < -fBaseLineTemp) {
+        fBaseLine = -fBaseLineTemp;
+      }
+      fLineStep = std::max(fLineStep, fLineHeight);
+      pTP->pLinkData = pUserData ? pUserData->m_pLinkData : nullptr;
+      pPieceLine->m_textPieces.push_back(std::move(pTP));
+      DoTabstops(pStyle.Get(), pPieceLine);
+    }
+    for (const auto& pTP : pPieceLine->m_textPieces) {
+      float& fTop = pTP->rtPiece.top;
+      float fBaseLineTemp = fTop;
+      fTop = fLinePos + fLineStep - pTP->rtPiece.height - fBaseLineTemp;
+      fTop = std::max(0.0f, fTop);
+    }
+    fLinePos += fLineStep + fBaseLine;
+  } else {
+    float fLineStep = 0;
+    float fLineWidth = 0;
+    for (int32_t i = 0; i < iPieces; i++) {
+      const CFX_BreakPiece* pPiece = m_pBreak->GetBreakPieceUnstable(i);
+      CXFA_TextUserData* pUserData = pPiece->m_pUserData.Get();
+      if (pUserData)
+        pStyle = pUserData->m_pStyle;
+      float fVerScale = pPiece->m_iVerticalScale / 100.0f;
+      float fBaseLine = m_textParser.GetBaseline(m_pTextProvider, pStyle.Get());
+      float fLineHeight = m_textParser.GetLineHeight(
+          m_pTextProvider, pStyle.Get(), m_iLines == 0, fVerScale);
+      if (fBaseLine > 0) {
+        float fLineHeightTmp =
+            fBaseLine + (float)pPiece->m_iFontSize * fVerScale / 20.0f;
+        if (fLineHeight < fLineHeightTmp) {
+          fLineHeight = fLineHeightTmp;
+        }
+      }
+      fLineStep = std::max(fLineStep, fLineHeight);
+      fLineWidth += pPiece->m_iWidth / 20000.0f;
+    }
+    fLinePos += fLineStep;
+    m_fMaxWidth = std::max(m_fMaxWidth, fLineWidth);
+    if (m_pLoader && m_pLoader->m_bSaveLineHeight) {
+      float fHeight = fLinePos - m_pLoader->m_fLastPos;
+      m_pLoader->m_fLastPos = fLinePos;
+      m_pLoader->m_lineHeights.push_back(fHeight);
+    }
+  }
+
+  m_pBreak->ClearBreakPieces();
+  if (dwStatus == CFX_BreakType::Paragraph) {
+    m_pBreak->Reset();
+    if (!pStyle && bEndBreak) {
+      CXFA_Para para = m_pTextProvider->GetParaNode();
+      if (para) {
+        float fStartPos = para.GetMarginLeft();
+        float fIndent = para.GetTextIndent();
+        if (fIndent > 0)
+          fStartPos += fIndent;
+
+        float fSpaceBelow = para.GetSpaceBelow();
+        if (fSpaceBelow < 0.1f)
+          fSpaceBelow = 0;
+
+        m_pBreak->SetLineStartPos(fStartPos);
+        fLinePos += fSpaceBelow;
+      }
+    }
+  }
+
+  if (pStyle) {
+    float fStart = 0;
+    const FDE_CSSRect* pRect = pStyle->GetMarginWidth();
+    if (pRect)
+      fStart = pRect->left.GetValue();
+
+    float fTextIndent = pStyle->GetTextIndent().GetValue();
+    if (fTextIndent < 0)
+      fStart -= fTextIndent;
+
+    m_pBreak->SetLineStartPos(fStart);
+  }
+  m_iLines++;
+}
+
+void CXFA_TextLayout::RenderString(CFDE_RenderDevice* pDevice,
+                                   CFDE_Brush* pBrush,
+                                   CXFA_PieceLine* pPieceLine,
+                                   int32_t iPiece,
+                                   FXTEXT_CHARPOS* pCharPos,
+                                   const CFX_Matrix& tmDoc2Device) {
+  const CXFA_TextPiece* pPiece = pPieceLine->m_textPieces[iPiece].get();
+  int32_t iCount = GetDisplayPos(pPiece, pCharPos);
+  if (iCount > 0) {
+    pBrush->SetColor(pPiece->dwColor);
+    pDevice->DrawString(pBrush, pPiece->pFont, pCharPos, iCount,
+                        pPiece->fFontSize, &tmDoc2Device);
+  }
+  pPieceLine->m_charCounts.push_back(iCount);
+}
+
+void CXFA_TextLayout::RenderPath(CFDE_RenderDevice* pDevice,
+                                 CFDE_Pen* pPen,
+                                 CXFA_PieceLine* pPieceLine,
+                                 int32_t iPiece,
+                                 FXTEXT_CHARPOS* pCharPos,
+                                 const CFX_Matrix& tmDoc2Device) {
+  CXFA_TextPiece* pPiece = pPieceLine->m_textPieces[iPiece].get();
+  bool bNoUnderline = pPiece->iUnderline < 1 || pPiece->iUnderline > 2;
+  bool bNoLineThrough = pPiece->iLineThrough < 1 || pPiece->iLineThrough > 2;
+  if (bNoUnderline && bNoLineThrough)
+    return;
+
+  pPen->SetColor(pPiece->dwColor);
+  auto pPath = pdfium::MakeUnique<CFDE_Path>();
+  int32_t iChars = GetDisplayPos(pPiece, pCharPos);
+  if (iChars > 0) {
+    CFX_PointF pt1, pt2;
+    float fEndY = pCharPos[0].m_Origin.y + 1.05f;
+    if (pPiece->iPeriod == XFA_ATTRIBUTEENUM_Word) {
+      for (int32_t i = 0; i < pPiece->iUnderline; i++) {
+        for (int32_t j = 0; j < iChars; j++) {
+          pt1.x = pCharPos[j].m_Origin.x;
+          pt2.x =
+              pt1.x + pCharPos[j].m_FontCharWidth * pPiece->fFontSize / 1000.0f;
+          pt1.y = pt2.y = fEndY;
+          pPath->AddLine(pt1, pt2);
+        }
+        fEndY += 2.0f;
+      }
+    } else {
+      pt1.x = pCharPos[0].m_Origin.x;
+      pt2.x =
+          pCharPos[iChars - 1].m_Origin.x +
+          pCharPos[iChars - 1].m_FontCharWidth * pPiece->fFontSize / 1000.0f;
+      for (int32_t i = 0; i < pPiece->iUnderline; i++) {
+        pt1.y = pt2.y = fEndY;
+        pPath->AddLine(pt1, pt2);
+        fEndY += 2.0f;
+      }
+    }
+    fEndY = pCharPos[0].m_Origin.y - pPiece->rtPiece.height * 0.25f;
+    pt1.x = pCharPos[0].m_Origin.x;
+    pt2.x = pCharPos[iChars - 1].m_Origin.x +
+            pCharPos[iChars - 1].m_FontCharWidth * pPiece->fFontSize / 1000.0f;
+    for (int32_t i = 0; i < pPiece->iLineThrough; i++) {
+      pt1.y = pt2.y = fEndY;
+      pPath->AddLine(pt1, pt2);
+      fEndY += 2.0f;
+    }
+  } else {
+    if (bNoLineThrough &&
+        (bNoUnderline || pPiece->iPeriod != XFA_ATTRIBUTEENUM_All)) {
+      return;
+    }
+    int32_t iCharsTmp = 0;
+    int32_t iPiecePrev = iPiece;
+    int32_t iPieceNext = iPiece;
+    while (iPiecePrev > 0) {
+      iPiecePrev--;
+      iCharsTmp = pPieceLine->m_charCounts[iPiecePrev];
+      if (iCharsTmp > 0)
+        break;
+    }
+    if (iCharsTmp == 0)
+      return;
+
+    iCharsTmp = 0;
+    int32_t iPieces = pdfium::CollectionSize<int32_t>(pPieceLine->m_textPieces);
+    while (iPieceNext < iPieces - 1) {
+      iPieceNext++;
+      iCharsTmp = pPieceLine->m_charCounts[iPieceNext];
+      if (iCharsTmp > 0)
+        break;
+    }
+    if (iCharsTmp == 0)
+      return;
+
+    float fOrgX = 0.0f;
+    float fEndX = 0.0f;
+    pPiece = pPieceLine->m_textPieces[iPiecePrev].get();
+    iChars = GetDisplayPos(pPiece, pCharPos);
+    if (iChars < 1)
+      return;
+
+    fOrgX = pCharPos[iChars - 1].m_Origin.x +
+            pCharPos[iChars - 1].m_FontCharWidth * pPiece->fFontSize / 1000.0f;
+    pPiece = pPieceLine->m_textPieces[iPieceNext].get();
+    iChars = GetDisplayPos(pPiece, pCharPos);
+    if (iChars < 1)
+      return;
+
+    fEndX = pCharPos[0].m_Origin.x;
+    CFX_PointF pt1;
+    CFX_PointF pt2;
+    pt1.x = fOrgX;
+    pt2.x = fEndX;
+    float fEndY = pCharPos[0].m_Origin.y + 1.05f;
+    for (int32_t i = 0; i < pPiece->iUnderline; i++) {
+      pt1.y = fEndY;
+      pt2.y = fEndY;
+      pPath->AddLine(pt1, pt2);
+      fEndY += 2.0f;
+    }
+    fEndY = pCharPos[0].m_Origin.y - pPiece->rtPiece.height * 0.25f;
+    for (int32_t i = 0; i < pPiece->iLineThrough; i++) {
+      pt1.y = fEndY;
+      pt2.y = fEndY;
+      pPath->AddLine(pt1, pt2);
+      fEndY += 2.0f;
+    }
+  }
+  pDevice->DrawPath(pPen, 1, pPath.get(), &tmDoc2Device);
+}
+
+int32_t CXFA_TextLayout::GetDisplayPos(const CXFA_TextPiece* pPiece,
+                                       FXTEXT_CHARPOS* pCharPos,
+                                       bool bCharCode) {
+  if (!pPiece)
+    return 0;
+
+  FX_RTFTEXTOBJ tr;
+  if (!ToRun(pPiece, &tr))
+    return 0;
+  return m_pBreak->GetDisplayPos(&tr, pCharPos, bCharCode);
+}
+
+bool CXFA_TextLayout::ToRun(const CXFA_TextPiece* pPiece, FX_RTFTEXTOBJ* tr) {
+  int32_t iLength = pPiece->iChars;
+  if (iLength < 1)
+    return false;
+
+  tr->pStr = pPiece->szText;
+  tr->pFont = pPiece->pFont;
+  tr->pRect = &pPiece->rtPiece;
+  tr->pWidths = pPiece->Widths;
+  tr->iLength = iLength;
+  tr->fFontSize = pPiece->fFontSize;
+  tr->iBidiLevel = pPiece->iBidiLevel;
+  tr->wLineBreakChar = L'\n';
+  tr->iVerticalScale = pPiece->iVerScale;
+  tr->iHorizontalScale = pPiece->iHorScale;
+  return true;
+}