Cleanup some xfa/fxfa code.

This CL moves the .h files to have names corresponding to the contained
classes. The .cpp files are moved alongside the .h files. Any extra
classes in the .h files have been split into their own files.

Change-Id: I14b4efc02417f0df946500e87b6c502e77020db8
Reviewed-on: https://pdfium-review.googlesource.com/3160
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 208 insertions, 0 deletions

diff --git a/xfa/fxfa/cxfa_pdffontmgr.cpp b/xfa/fxfa/cxfa_pdffontmgr.cpp
new file mode 100644
index 0000000000..cadb7cbab5
--- /dev/null
+++ b/xfa/fxfa/cxfa_pdffontmgr.cpp
@@ -0,0 +1,208 @@
+// 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_pdffontmgr.h"
+
+#include <algorithm>
+
+#include "core/fpdfapi/font/cpdf_font.h"
+#include "xfa/fxfa/cxfa_ffapp.h"
+
+namespace {
+
+// The 5 names per entry are: PsName, Normal, Bold, Italic, BoldItalic.
+const char* const g_XFAPDFFontName[][5] = {
+    {"Adobe PI Std", "AdobePIStd", "AdobePIStd", "AdobePIStd", "AdobePIStd"},
+    {"Myriad Pro Light", "MyriadPro-Light", "MyriadPro-Semibold",
+     "MyriadPro-LightIt", "MyriadPro-SemiboldIt"},
+};
+
+}  // namespace
+
+CXFA_PDFFontMgr::CXFA_PDFFontMgr(CXFA_FFDoc* pDoc) : m_pDoc(pDoc) {}
+
+CXFA_PDFFontMgr::~CXFA_PDFFontMgr() {}
+
+CFX_RetainPtr<CFGAS_GEFont> CXFA_PDFFontMgr::FindFont(
+    const CFX_ByteString& strPsName,
+    bool bBold,
+    bool bItalic,
+    CPDF_Font** pDstPDFFont,
+    bool bStrictMatch) {
+  CPDF_Document* pDoc = m_pDoc->GetPDFDoc();
+  if (!pDoc)
+    return nullptr;
+
+  CPDF_Dictionary* pFontSetDict =
+      pDoc->GetRoot()->GetDictFor("AcroForm")->GetDictFor("DR");
+  if (!pFontSetDict)
+    return nullptr;
+
+  pFontSetDict = pFontSetDict->GetDictFor("Font");
+  if (!pFontSetDict)
+    return nullptr;
+
+  CFX_ByteString name = strPsName;
+  name.Remove(' ');
+  CFGAS_FontMgr* pFDEFontMgr = m_pDoc->GetApp()->GetFDEFontMgr();
+  for (const auto& it : *pFontSetDict) {
+    const CFX_ByteString& key = it.first;
+    CPDF_Object* pObj = it.second.get();
+    if (!PsNameMatchDRFontName(name.AsStringC(), bBold, bItalic, key,
+                               bStrictMatch)) {
+      continue;
+    }
+    CPDF_Dictionary* pFontDict = ToDictionary(pObj->GetDirect());
+    if (!pFontDict || pFontDict->GetStringFor("Type") != "Font") {
+      return nullptr;
+    }
+    CPDF_Font* pPDFFont = pDoc->LoadFont(pFontDict);
+    if (!pPDFFont) {
+      return nullptr;
+    }
+    if (!pPDFFont->IsEmbedded()) {
+      *pDstPDFFont = pPDFFont;
+      return nullptr;
+    }
+    return CFGAS_GEFont::LoadFont(&pPDFFont->m_Font, pFDEFontMgr);
+  }
+  return nullptr;
+}
+
+CFX_RetainPtr<CFGAS_GEFont> CXFA_PDFFontMgr::GetFont(
+    const CFX_WideStringC& wsFontFamily,
+    uint32_t dwFontStyles,
+    CPDF_Font** pPDFFont,
+    bool bStrictMatch) {
+  uint32_t dwHashCode = FX_HashCode_GetW(wsFontFamily, false);
+  CFX_ByteString strKey;
+  strKey.Format("%u%u", dwHashCode, dwFontStyles);
+  auto it = m_FontMap.find(strKey);
+  if (it != m_FontMap.end())
+    return it->second;
+  CFX_ByteString bsPsName =
+      CFX_ByteString::FromUnicode(CFX_WideString(wsFontFamily));
+  bool bBold = (dwFontStyles & FX_FONTSTYLE_Bold) == FX_FONTSTYLE_Bold;
+  bool bItalic = (dwFontStyles & FX_FONTSTYLE_Italic) == FX_FONTSTYLE_Italic;
+  CFX_ByteString strFontName = PsNameToFontName(bsPsName, bBold, bItalic);
+  CFX_RetainPtr<CFGAS_GEFont> pFont =
+      FindFont(strFontName, bBold, bItalic, pPDFFont, bStrictMatch);
+  if (pFont)
+    m_FontMap[strKey] = pFont;
+  return pFont;
+}
+
+CFX_ByteString CXFA_PDFFontMgr::PsNameToFontName(
+    const CFX_ByteString& strPsName,
+    bool bBold,
+    bool bItalic) {
+  for (size_t i = 0; i < FX_ArraySize(g_XFAPDFFontName); ++i) {
+    if (strPsName == g_XFAPDFFontName[i][0]) {
+      size_t index = 1;
+      if (bBold)
+        ++index;
+      if (bItalic)
+        index += 2;
+      return g_XFAPDFFontName[i][index];
+    }
+  }
+  return strPsName;
+}
+
+bool CXFA_PDFFontMgr::PsNameMatchDRFontName(const CFX_ByteStringC& bsPsName,
+                                            bool bBold,
+                                            bool bItalic,
+                                            const CFX_ByteString& bsDRFontName,
+                                            bool bStrictMatch) {
+  CFX_ByteString bsDRName = bsDRFontName;
+  bsDRName.Remove('-');
+  int32_t iPsLen = bsPsName.GetLength();
+  int32_t nIndex = bsDRName.Find(bsPsName);
+  if (nIndex != -1 && !bStrictMatch)
+    return true;
+
+  if (nIndex != 0)
+    return false;
+
+  int32_t iDifferLength = bsDRName.GetLength() - iPsLen;
+  if (iDifferLength > 1 || (bBold || bItalic)) {
+    int32_t iBoldIndex = bsDRName.Find("Bold");
+    bool bBoldFont = iBoldIndex > 0;
+    if (bBold != bBoldFont)
+      return false;
+
+    if (bBoldFont) {
+      iDifferLength =
+          std::min(iDifferLength - 4, bsDRName.GetLength() - iBoldIndex - 4);
+    }
+    bool bItalicFont = true;
+    if (bsDRName.Find("Italic") > 0) {
+      iDifferLength -= 6;
+    } else if (bsDRName.Find("It") > 0) {
+      iDifferLength -= 2;
+    } else if (bsDRName.Find("Oblique") > 0) {
+      iDifferLength -= 7;
+    } else {
+      bItalicFont = false;
+    }
+    if (bItalic != bItalicFont)
+      return false;
+
+    if (iDifferLength > 1) {
+      CFX_ByteString bsDRTailer = bsDRName.Right(iDifferLength);
+      if (bsDRTailer == "MT" || bsDRTailer == "PSMT" ||
+          bsDRTailer == "Regular" || bsDRTailer == "Reg") {
+        return true;
+      }
+      if (bBoldFont || bItalicFont)
+        return false;
+
+      bool bMatch = false;
+      switch (bsPsName.GetAt(iPsLen - 1)) {
+        case 'L': {
+          if (bsDRName.Right(5) == "Light") {
+            bMatch = true;
+          }
+        } break;
+        case 'R': {
+          if (bsDRName.Right(7) == "Regular" || bsDRName.Right(3) == "Reg") {
+            bMatch = true;
+          }
+        } break;
+        case 'M': {
+          if (bsDRName.Right(5) == "Medium") {
+            bMatch = true;
+          }
+        } break;
+        default:
+          break;
+      }
+      return bMatch;
+    }
+  }
+  return true;
+}
+
+bool CXFA_PDFFontMgr::GetCharWidth(const CFX_RetainPtr<CFGAS_GEFont>& pFont,
+                                   wchar_t wUnicode,
+                                   bool bCharCode,
+                                   int32_t* pWidth) {
+  if (wUnicode != 0x20 || bCharCode)
+    return false;
+
+  auto it = m_FDE2PDFFont.find(pFont);
+  if (it == m_FDE2PDFFont.end())
+    return false;
+
+  CPDF_Font* pPDFFont = it->second;
+  *pWidth = pPDFFont->GetCharWidthF(pPDFFont->CharCodeFromUnicode(wUnicode));
+  return true;
+}
+
+void CXFA_PDFFontMgr::SetFont(const CFX_RetainPtr<CFGAS_GEFont>& pFont,
+                              CPDF_Font* pPDFFont) {
+  m_FDE2PDFFont[pFont] = pPDFFont;
+}