Rename PWL_FooBar files to cpwl_foo_bar.

Change-Id: I7ed0ba0acbbee291e285555974ebf50c0073668f
Reviewed-on: https://pdfium-review.googlesource.com/6250
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

1 files changed, 413 insertions, 0 deletions

diff --git a/fpdfsdk/pdfwindow/cpwl_font_map.cpp b/fpdfsdk/pdfwindow/cpwl_font_map.cpp
new file mode 100644
index 0000000000..f0c74ba0ce
--- /dev/null
+++ b/fpdfsdk/pdfwindow/cpwl_font_map.cpp
@@ -0,0 +1,413 @@
+// Copyright 2014 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 "fpdfsdk/pdfwindow/cpwl_font_map.h"
+
+#include <utility>
+
+#include "core/fpdfapi/cpdf_modulemgr.h"
+#include "core/fpdfapi/font/cpdf_font.h"
+#include "core/fpdfapi/font/cpdf_fontencoding.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/parser/cpdf_parser.h"
+#include "core/fpdfdoc/ipvt_fontmap.h"
+#include "core/fxcrt/fx_codepage.h"
+#include "fpdfsdk/pdfwindow/cpwl_wnd.h"
+#include "third_party/base/ptr_util.h"
+#include "third_party/base/stl_util.h"
+
+namespace {
+
+const char kDefaultFontName[] = "Helvetica";
+
+const char* const g_sDEStandardFontName[] = {"Courier",
+                                             "Courier-Bold",
+                                             "Courier-BoldOblique",
+                                             "Courier-Oblique",
+                                             "Helvetica",
+                                             "Helvetica-Bold",
+                                             "Helvetica-BoldOblique",
+                                             "Helvetica-Oblique",
+                                             "Times-Roman",
+                                             "Times-Bold",
+                                             "Times-Italic",
+                                             "Times-BoldItalic",
+                                             "Symbol",
+                                             "ZapfDingbats"};
+
+}  // namespace
+
+CPWL_FontMap::CPWL_FontMap(CFX_SystemHandler* pSystemHandler)
+    : m_pSystemHandler(pSystemHandler) {
+  ASSERT(m_pSystemHandler);
+}
+
+CPWL_FontMap::~CPWL_FontMap() {
+  Empty();
+}
+
+CPDF_Document* CPWL_FontMap::GetDocument() {
+  if (!m_pPDFDoc) {
+    if (CPDF_ModuleMgr::Get()) {
+      m_pPDFDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
+      m_pPDFDoc->CreateNewDoc();
+    }
+  }
+  return m_pPDFDoc.get();
+}
+
+CPDF_Font* CPWL_FontMap::GetPDFFont(int32_t nFontIndex) {
+  if (pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex])
+    return m_Data[nFontIndex]->pFont;
+
+  return nullptr;
+}
+
+CFX_ByteString CPWL_FontMap::GetPDFFontAlias(int32_t nFontIndex) {
+  if (pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex])
+    return m_Data[nFontIndex]->sFontName;
+
+  return CFX_ByteString();
+}
+
+bool CPWL_FontMap::KnowWord(int32_t nFontIndex, uint16_t word) {
+  return pdfium::IndexInBounds(m_Data, nFontIndex) && m_Data[nFontIndex] &&
+         CharCodeFromUnicode(nFontIndex, word) >= 0;
+}
+
+int32_t CPWL_FontMap::GetWordFontIndex(uint16_t word,
+                                       int32_t nCharset,
+                                       int32_t nFontIndex) {
+  if (nFontIndex > 0) {
+    if (KnowWord(nFontIndex, word))
+      return nFontIndex;
+  } else {
+    if (const CPWL_FontMap_Data* pData = GetFontMapData(0)) {
+      if (nCharset == FX_CHARSET_Default ||
+          pData->nCharset == FX_CHARSET_Symbol || nCharset == pData->nCharset) {
+        if (KnowWord(0, word))
+          return 0;
+      }
+    }
+  }
+
+  int32_t nNewFontIndex =
+      GetFontIndex(GetNativeFontName(nCharset), nCharset, true);
+  if (nNewFontIndex >= 0) {
+    if (KnowWord(nNewFontIndex, word))
+      return nNewFontIndex;
+  }
+  nNewFontIndex = GetFontIndex("Arial Unicode MS", FX_CHARSET_Default, false);
+  if (nNewFontIndex >= 0) {
+    if (KnowWord(nNewFontIndex, word))
+      return nNewFontIndex;
+  }
+  return -1;
+}
+
+int32_t CPWL_FontMap::CharCodeFromUnicode(int32_t nFontIndex, uint16_t word) {
+  if (!pdfium::IndexInBounds(m_Data, nFontIndex))
+    return -1;
+
+  CPWL_FontMap_Data* pData = m_Data[nFontIndex].get();
+  if (!pData || !pData->pFont)
+    return -1;
+
+  if (pData->pFont->IsUnicodeCompatible())
+    return pData->pFont->CharCodeFromUnicode(word);
+
+  return word < 0xFF ? word : -1;
+}
+
+CFX_ByteString CPWL_FontMap::GetNativeFontName(int32_t nCharset) {
+  for (const auto& pData : m_NativeFont) {
+    if (pData && pData->nCharset == nCharset)
+      return pData->sFontName;
+  }
+
+  CFX_ByteString sNew = GetNativeFont(nCharset);
+  if (sNew.IsEmpty())
+    return CFX_ByteString();
+
+  auto pNewData = pdfium::MakeUnique<CPWL_FontMap_Native>();
+  pNewData->nCharset = nCharset;
+  pNewData->sFontName = sNew;
+  m_NativeFont.push_back(std::move(pNewData));
+  return sNew;
+}
+
+void CPWL_FontMap::Empty() {
+  m_Data.clear();
+  m_NativeFont.clear();
+}
+
+void CPWL_FontMap::Initialize() {
+  GetFontIndex(kDefaultFontName, FX_CHARSET_ANSI, false);
+}
+
+bool CPWL_FontMap::IsStandardFont(const CFX_ByteString& sFontName) {
+  for (size_t i = 0; i < FX_ArraySize(g_sDEStandardFontName); ++i) {
+    if (sFontName == g_sDEStandardFontName[i])
+      return true;
+  }
+
+  return false;
+}
+
+int32_t CPWL_FontMap::FindFont(const CFX_ByteString& sFontName,
+                               int32_t nCharset) {
+  int32_t i = 0;
+  for (const auto& pData : m_Data) {
+    if (pData &&
+        (nCharset == FX_CHARSET_Default || nCharset == pData->nCharset) &&
+        (sFontName.IsEmpty() || pData->sFontName == sFontName)) {
+      return i;
+    }
+    ++i;
+  }
+  return -1;
+}
+
+int32_t CPWL_FontMap::GetFontIndex(const CFX_ByteString& sFontName,
+                                   int32_t nCharset,
+                                   bool bFind) {
+  int32_t nFontIndex = FindFont(EncodeFontAlias(sFontName, nCharset), nCharset);
+  if (nFontIndex >= 0)
+    return nFontIndex;
+
+  CFX_ByteString sAlias;
+  CPDF_Font* pFont = bFind ? FindFontSameCharset(&sAlias, nCharset) : nullptr;
+  if (!pFont) {
+    CFX_ByteString sTemp = sFontName;
+    pFont = AddFontToDocument(GetDocument(), sTemp, nCharset);
+    sAlias = EncodeFontAlias(sTemp, nCharset);
+  }
+  AddedFont(pFont, sAlias);
+  return AddFontData(pFont, sAlias, nCharset);
+}
+
+CPDF_Font* CPWL_FontMap::FindFontSameCharset(CFX_ByteString* sFontAlias,
+                                             int32_t nCharset) {
+  return nullptr;
+}
+
+int32_t CPWL_FontMap::AddFontData(CPDF_Font* pFont,
+                                  const CFX_ByteString& sFontAlias,
+                                  int32_t nCharset) {
+  auto pNewData = pdfium::MakeUnique<CPWL_FontMap_Data>();
+  pNewData->pFont = pFont;
+  pNewData->sFontName = sFontAlias;
+  pNewData->nCharset = nCharset;
+  m_Data.push_back(std::move(pNewData));
+  return pdfium::CollectionSize<int32_t>(m_Data) - 1;
+}
+
+void CPWL_FontMap::AddedFont(CPDF_Font* pFont,
+                             const CFX_ByteString& sFontAlias) {}
+
+CFX_ByteString CPWL_FontMap::GetNativeFont(int32_t nCharset) {
+  if (nCharset == FX_CHARSET_Default)
+    nCharset = GetNativeCharset();
+
+  CFX_ByteString sFontName = GetDefaultFontByCharset(nCharset);
+  if (!m_pSystemHandler->FindNativeTrueTypeFont(sFontName))
+    return CFX_ByteString();
+
+  return sFontName;
+}
+
+CPDF_Font* CPWL_FontMap::AddFontToDocument(CPDF_Document* pDoc,
+                                           CFX_ByteString& sFontName,
+                                           uint8_t nCharset) {
+  if (IsStandardFont(sFontName))
+    return AddStandardFont(pDoc, sFontName);
+
+  return AddSystemFont(pDoc, sFontName, nCharset);
+}
+
+CPDF_Font* CPWL_FontMap::AddStandardFont(CPDF_Document* pDoc,
+                                         CFX_ByteString& sFontName) {
+  if (!pDoc)
+    return nullptr;
+
+  CPDF_Font* pFont = nullptr;
+
+  if (sFontName == "ZapfDingbats") {
+    pFont = pDoc->AddStandardFont(sFontName.c_str(), nullptr);
+  } else {
+    CPDF_FontEncoding fe(PDFFONT_ENCODING_WINANSI);
+    pFont = pDoc->AddStandardFont(sFontName.c_str(), &fe);
+  }
+
+  return pFont;
+}
+
+CPDF_Font* CPWL_FontMap::AddSystemFont(CPDF_Document* pDoc,
+                                       CFX_ByteString& sFontName,
+                                       uint8_t nCharset) {
+  if (!pDoc)
+    return nullptr;
+
+  if (sFontName.IsEmpty())
+    sFontName = GetNativeFont(nCharset);
+  if (nCharset == FX_CHARSET_Default)
+    nCharset = GetNativeCharset();
+
+  return m_pSystemHandler->AddNativeTrueTypeFontToPDF(pDoc, sFontName,
+                                                      nCharset);
+}
+
+CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName,
+                                             int32_t nCharset) {
+  CFX_ByteString sPostfix;
+  sPostfix.Format("_%02X", nCharset);
+  return EncodeFontAlias(sFontName) + sPostfix;
+}
+
+CFX_ByteString CPWL_FontMap::EncodeFontAlias(const CFX_ByteString& sFontName) {
+  CFX_ByteString sRet = sFontName;
+  sRet.Remove(' ');
+  return sRet;
+}
+
+const CPWL_FontMap_Data* CPWL_FontMap::GetFontMapData(int32_t nIndex) const {
+  return pdfium::IndexInBounds(m_Data, nIndex) ? m_Data[nIndex].get() : nullptr;
+}
+
+int32_t CPWL_FontMap::GetNativeCharset() {
+  uint8_t nCharset = FX_CHARSET_ANSI;
+  int32_t iCodePage = FXSYS_GetACP();
+  switch (iCodePage) {
+    case FX_CODEPAGE_ShiftJIS:
+      nCharset = FX_CHARSET_ShiftJIS;
+      break;
+    case FX_CODEPAGE_ChineseSimplified:
+      nCharset = FX_CHARSET_ChineseSimplified;
+      break;
+    case FX_CODEPAGE_ChineseTraditional:
+      nCharset = FX_CHARSET_ChineseTraditional;
+      break;
+    case FX_CODEPAGE_MSWin_WesternEuropean:
+      nCharset = FX_CHARSET_ANSI;
+      break;
+    case FX_CODEPAGE_MSDOS_Thai:
+      nCharset = FX_CHARSET_Thai;
+      break;
+    case FX_CODEPAGE_Hangul:
+      nCharset = FX_CHARSET_Hangul;
+      break;
+    case FX_CODEPAGE_UTF16LE:
+      nCharset = FX_CHARSET_ANSI;
+      break;
+    case FX_CODEPAGE_MSWin_EasternEuropean:
+      nCharset = FX_CHARSET_MSWin_EasternEuropean;
+      break;
+    case FX_CODEPAGE_MSWin_Cyrillic:
+      nCharset = FX_CHARSET_MSWin_Cyrillic;
+      break;
+    case FX_CODEPAGE_MSWin_Greek:
+      nCharset = FX_CHARSET_MSWin_Greek;
+      break;
+    case FX_CODEPAGE_MSWin_Turkish:
+      nCharset = FX_CHARSET_MSWin_Turkish;
+      break;
+    case FX_CODEPAGE_MSWin_Hebrew:
+      nCharset = FX_CHARSET_MSWin_Hebrew;
+      break;
+    case FX_CODEPAGE_MSWin_Arabic:
+      nCharset = FX_CHARSET_MSWin_Arabic;
+      break;
+    case FX_CODEPAGE_MSWin_Baltic:
+      nCharset = FX_CHARSET_MSWin_Baltic;
+      break;
+    case FX_CODEPAGE_MSWin_Vietnamese:
+      nCharset = FX_CHARSET_MSWin_Vietnamese;
+      break;
+    case FX_CODEPAGE_Johab:
+      nCharset = FX_CHARSET_Johab;
+      break;
+  }
+  return nCharset;
+}
+
+const FPDF_CharsetFontMap CPWL_FontMap::defaultTTFMap[] = {
+    {FX_CHARSET_ANSI, "Helvetica"},
+    {FX_CHARSET_ChineseSimplified, "SimSun"},
+    {FX_CHARSET_ChineseTraditional, "MingLiU"},
+    {FX_CHARSET_ShiftJIS, "MS Gothic"},
+    {FX_CHARSET_Hangul, "Batang"},
+    {FX_CHARSET_MSWin_Cyrillic, "Arial"},
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_ || \
+    _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+    {FX_CHARSET_MSWin_EasternEuropean, "Arial"},
+#else
+    {FX_CHARSET_MSWin_EasternEuropean, "Tahoma"},
+#endif
+    {FX_CHARSET_MSWin_Arabic, "Arial"},
+    {-1, nullptr}};
+
+CFX_ByteString CPWL_FontMap::GetDefaultFontByCharset(int32_t nCharset) {
+  int i = 0;
+  while (defaultTTFMap[i].charset != -1) {
+    if (nCharset == defaultTTFMap[i].charset)
+      return defaultTTFMap[i].fontname;
+    ++i;
+  }
+  return "";
+}
+
+int32_t CPWL_FontMap::CharSetFromUnicode(uint16_t word, int32_t nOldCharset) {
+  // to avoid CJK Font to show ASCII
+  if (word < 0x7F)
+    return FX_CHARSET_ANSI;
+  // follow the old charset
+  if (nOldCharset != FX_CHARSET_Default)
+    return nOldCharset;
+
+  // find new charset
+  if ((word >= 0x4E00 && word <= 0x9FA5) ||
+      (word >= 0xE7C7 && word <= 0xE7F3) ||
+      (word >= 0x3000 && word <= 0x303F) ||
+      (word >= 0x2000 && word <= 0x206F)) {
+    return FX_CHARSET_ChineseSimplified;
+  }
+
+  if (((word >= 0x3040) && (word <= 0x309F)) ||
+      ((word >= 0x30A0) && (word <= 0x30FF)) ||
+      ((word >= 0x31F0) && (word <= 0x31FF)) ||
+      ((word >= 0xFF00) && (word <= 0xFFEF))) {
+    return FX_CHARSET_ShiftJIS;
+  }
+
+  if (((word >= 0xAC00) && (word <= 0xD7AF)) ||
+      ((word >= 0x1100) && (word <= 0x11FF)) ||
+      ((word >= 0x3130) && (word <= 0x318F))) {
+    return FX_CHARSET_Hangul;
+  }
+
+  if (word >= 0x0E00 && word <= 0x0E7F)
+    return FX_CHARSET_Thai;
+
+  if ((word >= 0x0370 && word <= 0x03FF) || (word >= 0x1F00 && word <= 0x1FFF))
+    return FX_CHARSET_MSWin_Greek;
+
+  if ((word >= 0x0600 && word <= 0x06FF) || (word >= 0xFB50 && word <= 0xFEFC))
+    return FX_CHARSET_MSWin_Arabic;
+
+  if (word >= 0x0590 && word <= 0x05FF)
+    return FX_CHARSET_MSWin_Hebrew;
+
+  if (word >= 0x0400 && word <= 0x04FF)
+    return FX_CHARSET_MSWin_Cyrillic;
+
+  if (word >= 0x0100 && word <= 0x024F)
+    return FX_CHARSET_MSWin_EasternEuropean;
+
+  if (word >= 0x1E00 && word <= 0x1EFF)
+    return FX_CHARSET_MSWin_Vietnamese;
+
+  return FX_CHARSET_ANSI;
+}