Split core/include/fpdfapi/fpdf_resource.h

core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp

Index: core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp
diff --git a/core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp b/core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..13e031808e4e513bf37392dbe78fd3446683dd62
--- /dev/null
+++ b/core/fpdfapi/fpdf_font/cpdf_truetypefont.cpp
@@ -0,0 +1,225 @@
+// Copyright 2016 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 "core/fpdfapi/fpdf_font/cpdf_truetypefont.h"
+
+#include "core/fpdfapi/fpdf_font/font_int.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
+#include "core/include/fxge/fx_font.h"
+
+CPDF_TrueTypeFont::CPDF_TrueTypeFont() {}
+
+bool CPDF_TrueTypeFont::IsTrueTypeFont() const {
+  return true;
+}
+
+const CPDF_TrueTypeFont* CPDF_TrueTypeFont::AsTrueTypeFont() const {
+  return this;
+}
+
+CPDF_TrueTypeFont* CPDF_TrueTypeFont::AsTrueTypeFont() {
+  return this;
+}
+
+FX_BOOL CPDF_TrueTypeFont::Load() {
+  return LoadCommon();
+}
+
+void CPDF_TrueTypeFont::LoadGlyphMap() {
+  if (!m_Font.GetFace())
+    return;
+
+  int baseEncoding = m_BaseEncoding;
+  if (m_pFontFile && m_Font.GetFace()->num_charmaps > 0 &&
+      (baseEncoding == PDFFONT_ENCODING_MACROMAN ||
+       baseEncoding == PDFFONT_ENCODING_WINANSI) &&
+      (m_Flags & PDFFONT_SYMBOLIC)) {
+    FX_BOOL bSupportWin = FALSE;
+    FX_BOOL bSupportMac = FALSE;
+    for (int i = 0; i < FXFT_Get_Face_CharmapCount(m_Font.GetFace()); i++) {
+      int platform_id = FXFT_Get_Charmap_PlatformID(
+          FXFT_Get_Face_Charmaps(m_Font.GetFace())[i]);
+      if (platform_id == 0 || platform_id == 3) {
+        bSupportWin = TRUE;
+      } else if (platform_id == 0 || platform_id == 1) {
+        bSupportMac = TRUE;
+      }
+    }
+    if (baseEncoding == PDFFONT_ENCODING_WINANSI && !bSupportWin) {
+      baseEncoding =
+          bSupportMac ? PDFFONT_ENCODING_MACROMAN : PDFFONT_ENCODING_BUILTIN;
+    } else if (baseEncoding == PDFFONT_ENCODING_MACROMAN && !bSupportMac) {
+      baseEncoding =
+          bSupportWin ? PDFFONT_ENCODING_WINANSI : PDFFONT_ENCODING_BUILTIN;
+    }
+  }
+  if (((baseEncoding == PDFFONT_ENCODING_MACROMAN ||
+        baseEncoding == PDFFONT_ENCODING_WINANSI) &&
+       !m_pCharNames) ||
+      (m_Flags & PDFFONT_NONSYMBOLIC)) {
+    if (!FXFT_Has_Glyph_Names(m_Font.GetFace()) &&
+        (!m_Font.GetFace()->num_charmaps || !m_Font.GetFace()->charmaps)) {
+      int nStartChar = m_pFontDict->GetIntegerBy("FirstChar");
+      if (nStartChar < 0 || nStartChar > 255)
+        return;
+
+      int charcode = 0;
+      for (; charcode < nStartChar; charcode++) {
+        m_GlyphIndex[charcode] = 0;
+      }
+      uint16_t nGlyph = charcode - nStartChar + 3;
+      for (; charcode < 256; charcode++, nGlyph++) {
+        m_GlyphIndex[charcode] = nGlyph;
+      }
+      return;
+    }
+    FX_BOOL bMSUnicode = FT_UseTTCharmap(m_Font.GetFace(), 3, 1);
+    FX_BOOL bMacRoman = FALSE, bMSSymbol = FALSE;
+    if (!bMSUnicode) {
+      if (m_Flags & PDFFONT_NONSYMBOLIC) {
+        bMacRoman = FT_UseTTCharmap(m_Font.GetFace(), 1, 0);
+        bMSSymbol = !bMacRoman && FT_UseTTCharmap(m_Font.GetFace(), 3, 0);
+      } else {
+        bMSSymbol = FT_UseTTCharmap(m_Font.GetFace(), 3, 0);
+        bMacRoman = !bMSSymbol && FT_UseTTCharmap(m_Font.GetFace(), 1, 0);
+      }
+    }
+    FX_BOOL bToUnicode = m_pFontDict->KeyExist("ToUnicode");
+    for (int charcode = 0; charcode < 256; charcode++) {
+      const FX_CHAR* name =
+          GetAdobeCharName(baseEncoding, m_pCharNames, charcode);
+      if (!name) {
+        m_GlyphIndex[charcode] =
+            m_pFontFile ? FXFT_Get_Char_Index(m_Font.GetFace(), charcode) : -1;
+        continue;
+      }
+      m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
+      if (bMSSymbol) {
+        const uint8_t prefix[4] = {0x00, 0xf0, 0xf1, 0xf2};
+        for (int j = 0; j < 4; j++) {
+          uint16_t unicode = prefix[j] * 256 + charcode;
+          m_GlyphIndex[charcode] =
+              FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
+          if (m_GlyphIndex[charcode]) {
+            break;
+          }
+        }
+      } else if (m_Encoding.m_Unicodes[charcode]) {
+        if (bMSUnicode) {
+          m_GlyphIndex[charcode] = FXFT_Get_Char_Index(
+              m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]);
+        } else if (bMacRoman) {
+          FX_DWORD maccode = FT_CharCodeFromUnicode(
+              FXFT_ENCODING_APPLE_ROMAN, m_Encoding.m_Unicodes[charcode]);
+          if (!maccode) {
+            m_GlyphIndex[charcode] =
+                FXFT_Get_Name_Index(m_Font.GetFace(), (char*)name);
+          } else {
+            m_GlyphIndex[charcode] =
+                FXFT_Get_Char_Index(m_Font.GetFace(), maccode);
+          }
+        }
+      }
+      if ((m_GlyphIndex[charcode] == 0 || m_GlyphIndex[charcode] == 0xffff) &&
+          name) {
+        if (name[0] == '.' && FXSYS_strcmp(name, ".notdef") == 0) {
+          m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), 32);
+        } else {
+          m_GlyphIndex[charcode] =
+              FXFT_Get_Name_Index(m_Font.GetFace(), (char*)name);
+          if (m_GlyphIndex[charcode] == 0) {
+            if (bToUnicode) {
+              CFX_WideString wsUnicode = UnicodeFromCharCode(charcode);
+              if (!wsUnicode.IsEmpty()) {
+                m_GlyphIndex[charcode] =
+                    FXFT_Get_Char_Index(m_Font.GetFace(), wsUnicode[0]);
+                m_Encoding.m_Unicodes[charcode] = wsUnicode[0];
+              }
+            }
+            if (m_GlyphIndex[charcode] == 0) {
+              m_GlyphIndex[charcode] =
+                  FXFT_Get_Char_Index(m_Font.GetFace(), charcode);
+            }
+          }
+        }
+      }
+    }
+    return;
+  }
+  if (FT_UseTTCharmap(m_Font.GetFace(), 3, 0)) {
+    const uint8_t prefix[4] = {0x00, 0xf0, 0xf1, 0xf2};
+    FX_BOOL bGotOne = FALSE;
+    for (int charcode = 0; charcode < 256; charcode++) {
+      for (int j = 0; j < 4; j++) {
+        uint16_t unicode = prefix[j] * 256 + charcode;
+        m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), unicode);
+        if (m_GlyphIndex[charcode]) {
+          bGotOne = TRUE;
+          break;
+        }
+      }
+    }
+    if (bGotOne) {
+      if (baseEncoding != PDFFONT_ENCODING_BUILTIN) {
+        for (int charcode = 0; charcode < 256; charcode++) {
+          const FX_CHAR* name =
+              GetAdobeCharName(baseEncoding, m_pCharNames, charcode);
+          if (!name) {
+            continue;
+          }
+          m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
+        }
+      } else if (FT_UseTTCharmap(m_Font.GetFace(), 1, 0)) {
+        for (int charcode = 0; charcode < 256; charcode++) {
+          m_Encoding.m_Unicodes[charcode] =
+              FT_UnicodeFromCharCode(FXFT_ENCODING_APPLE_ROMAN, charcode);
+        }
+      }
+      return;
+    }
+  }
+  if (FT_UseTTCharmap(m_Font.GetFace(), 1, 0)) {
+    FX_BOOL bGotOne = FALSE;
+    for (int charcode = 0; charcode < 256; charcode++) {
+      m_GlyphIndex[charcode] = FXFT_Get_Char_Index(m_Font.GetFace(), charcode);
+      m_Encoding.m_Unicodes[charcode] =
+          FT_UnicodeFromCharCode(FXFT_ENCODING_APPLE_ROMAN, charcode);
+      if (m_GlyphIndex[charcode]) {
+        bGotOne = TRUE;
+      }
+    }
+    if (m_pFontFile || bGotOne) {
+      return;
+    }
+  }
+  if (FXFT_Select_Charmap(m_Font.GetFace(), FXFT_ENCODING_UNICODE) == 0) {
+    FX_BOOL bGotOne = FALSE;
+    const uint16_t* pUnicodes = PDF_UnicodesForPredefinedCharSet(baseEncoding);
+    for (int charcode = 0; charcode < 256; charcode++) {
+      if (m_pFontFile) {
+        m_Encoding.m_Unicodes[charcode] = charcode;
+      } else {
+        const FX_CHAR* name = GetAdobeCharName(0, m_pCharNames, charcode);
+        if (name) {
+          m_Encoding.m_Unicodes[charcode] = PDF_UnicodeFromAdobeName(name);
+        } else if (pUnicodes) {
+          m_Encoding.m_Unicodes[charcode] = pUnicodes[charcode];
+        }
+      }
+      m_GlyphIndex[charcode] = FXFT_Get_Char_Index(
+          m_Font.GetFace(), m_Encoding.m_Unicodes[charcode]);
+      if (m_GlyphIndex[charcode]) {
+        bGotOne = TRUE;
+      }
+    }
+    if (bGotOne) {
+      return;
+    }
+  }
+  for (int charcode = 0; charcode < 256; charcode++) {
+    m_GlyphIndex[charcode] = charcode;
+  }
+}