// 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 <limits.h>

#include "core/include/fpdfapi/fpdf_module.h"
#include "core/include/fpdfapi/fpdf_page.h"
#include "core/src/fpdfapi/fpdf_page/pageint.h"

CPDF_Document::CPDF_Document() : CPDF_IndirectObjects(NULL) {
  m_pRootDict = NULL;
  m_pInfoDict = NULL;
  m_bLinearized = FALSE;
  m_dwFirstPageNo = 0;
  m_dwFirstPageObjNum = 0;
  m_pDocPage = CPDF_ModuleMgr::Get()->GetPageModule()->CreateDocData(this);
  m_pDocRender = CPDF_ModuleMgr::Get()->GetRenderModule()->CreateDocData(this);
}
void CPDF_Document::CreateNewDoc() {
  ASSERT(!m_pRootDict && !m_pInfoDict);
  m_pRootDict = new CPDF_Dictionary;
  m_pRootDict->SetAtName("Type", "Catalog");
  int objnum = AddIndirectObject(m_pRootDict);
  CPDF_Dictionary* pPages = new CPDF_Dictionary;
  pPages->SetAtName("Type", "Pages");
  pPages->SetAtNumber("Count", 0);
  pPages->SetAt("Kids", new CPDF_Array);
  objnum = AddIndirectObject(pPages);
  m_pRootDict->SetAtReference("Pages", this, objnum);
  m_pInfoDict = new CPDF_Dictionary;
  AddIndirectObject(m_pInfoDict);
}
static const FX_WCHAR g_FX_CP874Unicodes[128] = {
    0x20AC, 0x0000, 0x0000, 0x0000, 0x0000, 0x2026, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x0000, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x0E01, 0x0E02, 0x0E03,
    0x0E04, 0x0E05, 0x0E06, 0x0E07, 0x0E08, 0x0E09, 0x0E0A, 0x0E0B, 0x0E0C,
    0x0E0D, 0x0E0E, 0x0E0F, 0x0E10, 0x0E11, 0x0E12, 0x0E13, 0x0E14, 0x0E15,
    0x0E16, 0x0E17, 0x0E18, 0x0E19, 0x0E1A, 0x0E1B, 0x0E1C, 0x0E1D, 0x0E1E,
    0x0E1F, 0x0E20, 0x0E21, 0x0E22, 0x0E23, 0x0E24, 0x0E25, 0x0E26, 0x0E27,
    0x0E28, 0x0E29, 0x0E2A, 0x0E2B, 0x0E2C, 0x0E2D, 0x0E2E, 0x0E2F, 0x0E30,
    0x0E31, 0x0E32, 0x0E33, 0x0E34, 0x0E35, 0x0E36, 0x0E37, 0x0E38, 0x0E39,
    0x0E3A, 0x0000, 0x0000, 0x0000, 0x0000, 0x0E3F, 0x0E40, 0x0E41, 0x0E42,
    0x0E43, 0x0E44, 0x0E45, 0x0E46, 0x0E47, 0x0E48, 0x0E49, 0x0E4A, 0x0E4B,
    0x0E4C, 0x0E4D, 0x0E4E, 0x0E4F, 0x0E50, 0x0E51, 0x0E52, 0x0E53, 0x0E54,
    0x0E55, 0x0E56, 0x0E57, 0x0E58, 0x0E59, 0x0E5A, 0x0E5B, 0x0000, 0x0000,
    0x0000, 0x0000,
};
static const FX_WCHAR g_FX_CP1250Unicodes[128] = {
    0x20AC, 0x0000, 0x201A, 0x0000, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
    0x2030, 0x0160, 0x2039, 0x015A, 0x0164, 0x017D, 0x0179, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0161,
    0x203A, 0x015B, 0x0165, 0x017E, 0x017A, 0x00A0, 0x02C7, 0x02D8, 0x0141,
    0x00A4, 0x0104, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x015E, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x017B, 0x00B0, 0x00B1, 0x02DB, 0x0142, 0x00B4, 0x00B5,
    0x00B6, 0x00B7, 0x00B8, 0x0105, 0x015F, 0x00BB, 0x013D, 0x02DD, 0x013E,
    0x017C, 0x0154, 0x00C1, 0x00C2, 0x0102, 0x00C4, 0x0139, 0x0106, 0x00C7,
    0x010C, 0x00C9, 0x0118, 0x00CB, 0x011A, 0x00CD, 0x00CE, 0x010E, 0x0110,
    0x0143, 0x0147, 0x00D3, 0x00D4, 0x0150, 0x00D6, 0x00D7, 0x0158, 0x016E,
    0x00DA, 0x0170, 0x00DC, 0x00DD, 0x0162, 0x00DF, 0x0155, 0x00E1, 0x00E2,
    0x0103, 0x00E4, 0x013A, 0x0107, 0x00E7, 0x010D, 0x00E9, 0x0119, 0x00EB,
    0x011B, 0x00ED, 0x00EE, 0x010F, 0x0111, 0x0144, 0x0148, 0x00F3, 0x00F4,
    0x0151, 0x00F6, 0x00F7, 0x0159, 0x016F, 0x00FA, 0x0171, 0x00FC, 0x00FD,
    0x0163, 0x02D9,
};
static const FX_WCHAR g_FX_CP1251Unicodes[128] = {
    0x0402, 0x0403, 0x201A, 0x0453, 0x201E, 0x2026, 0x2020, 0x2021, 0x20AC,
    0x2030, 0x0409, 0x2039, 0x040A, 0x040C, 0x040B, 0x040F, 0x0452, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0459,
    0x203A, 0x045A, 0x045C, 0x045B, 0x045F, 0x00A0, 0x040E, 0x045E, 0x0408,
    0x00A4, 0x0490, 0x00A6, 0x00A7, 0x0401, 0x00A9, 0x0404, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x0407, 0x00B0, 0x00B1, 0x0406, 0x0456, 0x0491, 0x00B5,
    0x00B6, 0x00B7, 0x0451, 0x2116, 0x0454, 0x00BB, 0x0458, 0x0405, 0x0455,
    0x0457, 0x0410, 0x0411, 0x0412, 0x0413, 0x0414, 0x0415, 0x0416, 0x0417,
    0x0418, 0x0419, 0x041A, 0x041B, 0x041C, 0x041D, 0x041E, 0x041F, 0x0420,
    0x0421, 0x0422, 0x0423, 0x0424, 0x0425, 0x0426, 0x0427, 0x0428, 0x0429,
    0x042A, 0x042B, 0x042C, 0x042D, 0x042E, 0x042F, 0x0430, 0x0431, 0x0432,
    0x0433, 0x0434, 0x0435, 0x0436, 0x0437, 0x0438, 0x0439, 0x043A, 0x043B,
    0x043C, 0x043D, 0x043E, 0x043F, 0x0440, 0x0441, 0x0442, 0x0443, 0x0444,
    0x0445, 0x0446, 0x0447, 0x0448, 0x0449, 0x044A, 0x044B, 0x044C, 0x044D,
    0x044E, 0x044F,
};
static const FX_WCHAR g_FX_CP1253Unicodes[128] = {
    0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
    0x2030, 0x0000, 0x2039, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0000,
    0x203A, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x0385, 0x0386, 0x00A3,
    0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x0000, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x2015, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x0384, 0x00B5,
    0x00B6, 0x00B7, 0x0388, 0x0389, 0x038A, 0x00BB, 0x038C, 0x00BD, 0x038E,
    0x038F, 0x0390, 0x0391, 0x0392, 0x0393, 0x0394, 0x0395, 0x0396, 0x0397,
    0x0398, 0x0399, 0x039A, 0x039B, 0x039C, 0x039D, 0x039E, 0x039F, 0x03A0,
    0x03A1, 0x0000, 0x03A3, 0x03A4, 0x03A5, 0x03A6, 0x03A7, 0x03A8, 0x03A9,
    0x03AA, 0x03AB, 0x03AC, 0x03AD, 0x03AE, 0x03AF, 0x03B0, 0x03B1, 0x03B2,
    0x03B3, 0x03B4, 0x03B5, 0x03B6, 0x03B7, 0x03B8, 0x03B9, 0x03BA, 0x03BB,
    0x03BC, 0x03BD, 0x03BE, 0x03BF, 0x03C0, 0x03C1, 0x03C2, 0x03C3, 0x03C4,
    0x03C5, 0x03C6, 0x03C7, 0x03C8, 0x03C9, 0x03CA, 0x03CB, 0x03CC, 0x03CD,
    0x03CE, 0x0000,
};
static const FX_WCHAR g_FX_CP1254Unicodes[128] = {
    0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
    0x2030, 0x0160, 0x2039, 0x0152, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x02DC, 0x2122, 0x0161,
    0x203A, 0x0153, 0x0000, 0x0000, 0x0178, 0x00A0, 0x00A1, 0x00A2, 0x00A3,
    0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
    0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x00BA, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
    0x00BF, 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5, 0x00C6, 0x00C7,
    0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD, 0x00CE, 0x00CF, 0x011E,
    0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6, 0x00D7, 0x00D8, 0x00D9,
    0x00DA, 0x00DB, 0x00DC, 0x0130, 0x015E, 0x00DF, 0x00E0, 0x00E1, 0x00E2,
    0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7, 0x00E8, 0x00E9, 0x00EA, 0x00EB,
    0x00EC, 0x00ED, 0x00EE, 0x00EF, 0x011F, 0x00F1, 0x00F2, 0x00F3, 0x00F4,
    0x00F5, 0x00F6, 0x00F7, 0x00F8, 0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x0131,
    0x015F, 0x00FF,
};
static const FX_WCHAR g_FX_CP1255Unicodes[128] = {
    0x20AC, 0x0000, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
    0x2030, 0x0000, 0x2039, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x02DC, 0x2122, 0x0000,
    0x203A, 0x0000, 0x0000, 0x0000, 0x0000, 0x00A0, 0x00A1, 0x00A2, 0x00A3,
    0x20AA, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x00D7, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
    0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x00F7, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
    0x00BF, 0x05B0, 0x05B1, 0x05B2, 0x05B3, 0x05B4, 0x05B5, 0x05B6, 0x05B7,
    0x05B8, 0x05B9, 0x0000, 0x05BB, 0x05BC, 0x05BD, 0x05BE, 0x05BF, 0x05C0,
    0x05C1, 0x05C2, 0x05C3, 0x05F0, 0x05F1, 0x05F2, 0x05F3, 0x05F4, 0x0000,
    0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x05D0, 0x05D1, 0x05D2,
    0x05D3, 0x05D4, 0x05D5, 0x05D6, 0x05D7, 0x05D8, 0x05D9, 0x05DA, 0x05DB,
    0x05DC, 0x05DD, 0x05DE, 0x05DF, 0x05E0, 0x05E1, 0x05E2, 0x05E3, 0x05E4,
    0x05E5, 0x05E6, 0x05E7, 0x05E8, 0x05E9, 0x05EA, 0x0000, 0x0000, 0x200E,
    0x200F, 0x0000,
};
static const FX_WCHAR g_FX_CP1256Unicodes[128] = {
    0x20AC, 0x067E, 0x201A, 0x0192, 0x201E, 0x2026, 0x2020, 0x2021, 0x02C6,
    0x2030, 0x0679, 0x2039, 0x0152, 0x0686, 0x0698, 0x0688, 0x06AF, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x06A9, 0x2122, 0x0691,
    0x203A, 0x0153, 0x200C, 0x200D, 0x06BA, 0x00A0, 0x060C, 0x00A2, 0x00A3,
    0x00A4, 0x00A5, 0x00A6, 0x00A7, 0x00A8, 0x00A9, 0x06BE, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x00AF, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
    0x00B6, 0x00B7, 0x00B8, 0x00B9, 0x061B, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
    0x061F, 0x06C1, 0x0621, 0x0622, 0x0623, 0x0624, 0x0625, 0x0626, 0x0627,
    0x0628, 0x0629, 0x062A, 0x062B, 0x062C, 0x062D, 0x062E, 0x062F, 0x0630,
    0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x0636, 0x00D7, 0x0637, 0x0638,
    0x0639, 0x063A, 0x0640, 0x0641, 0x0642, 0x0643, 0x00E0, 0x0644, 0x00E2,
    0x0645, 0x0646, 0x0647, 0x0648, 0x00E7, 0x00E8, 0x00E9, 0x00EA, 0x00EB,
    0x0649, 0x064A, 0x00EE, 0x00EF, 0x064B, 0x064C, 0x064D, 0x064E, 0x00F4,
    0x064F, 0x0650, 0x00F7, 0x0651, 0x00F9, 0x0652, 0x00FB, 0x00FC, 0x200E,
    0x200F, 0x06D2,
};
static const FX_WCHAR g_FX_CP1257Unicodes[128] = {
    0x20AC, 0x0000, 0x201A, 0x0000, 0x201E, 0x2026, 0x2020, 0x2021, 0x0000,
    0x2030, 0x0000, 0x2039, 0x0000, 0x00A8, 0x02C7, 0x00B8, 0x0000, 0x2018,
    0x2019, 0x201C, 0x201D, 0x2022, 0x2013, 0x2014, 0x0000, 0x2122, 0x0000,
    0x203A, 0x0000, 0x00AF, 0x02DB, 0x0000, 0x00A0, 0x0000, 0x00A2, 0x00A3,
    0x00A4, 0x0000, 0x00A6, 0x00A7, 0x00D8, 0x00A9, 0x0156, 0x00AB, 0x00AC,
    0x00AD, 0x00AE, 0x00C6, 0x00B0, 0x00B1, 0x00B2, 0x00B3, 0x00B4, 0x00B5,
    0x00B6, 0x00B7, 0x00F8, 0x00B9, 0x0157, 0x00BB, 0x00BC, 0x00BD, 0x00BE,
    0x00E6, 0x0104, 0x012E, 0x0100, 0x0106, 0x00C4, 0x00C5, 0x0118, 0x0112,
    0x010C, 0x00C9, 0x0179, 0x0116, 0x0122, 0x0136, 0x012A, 0x013B, 0x0160,
    0x0143, 0x0145, 0x00D3, 0x014C, 0x00D5, 0x00D6, 0x00D7, 0x0172, 0x0141,
    0x015A, 0x016A, 0x00DC, 0x017B, 0x017D, 0x00DF, 0x0105, 0x012F, 0x0101,
    0x0107, 0x00E4, 0x00E5, 0x0119, 0x0113, 0x010D, 0x00E9, 0x017A, 0x0117,
    0x0123, 0x0137, 0x012B, 0x013C, 0x0161, 0x0144, 0x0146, 0x00F3, 0x014D,
    0x00F5, 0x00F6, 0x00F7, 0x0173, 0x0142, 0x015B, 0x016B, 0x00FC, 0x017C,
    0x017E, 0x02D9,
};
typedef struct {
  uint8_t m_Charset;
  const FX_WCHAR* m_pUnicodes;
} FX_CharsetUnicodes;
const FX_CharsetUnicodes g_FX_CharsetUnicodes[] = {
    {FXFONT_THAI_CHARSET, g_FX_CP874Unicodes},
    {FXFONT_EASTEUROPE_CHARSET, g_FX_CP1250Unicodes},
    {FXFONT_RUSSIAN_CHARSET, g_FX_CP1251Unicodes},
    {FXFONT_GREEK_CHARSET, g_FX_CP1253Unicodes},
    {FXFONT_TURKISH_CHARSET, g_FX_CP1254Unicodes},
    {FXFONT_HEBREW_CHARSET, g_FX_CP1255Unicodes},
    {FXFONT_ARABIC_CHARSET, g_FX_CP1256Unicodes},
    {FXFONT_BALTIC_CHARSET, g_FX_CP1257Unicodes},
};
#if (_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_DESKTOP_)
static void _InsertWidthArray(HDC hDC,
                              int start,
                              int end,
                              CPDF_Array* pWidthArray) {
  int size = end - start + 1;
  int* widths = FX_Alloc(int, size);
  GetCharWidth(hDC, start, end, widths);
  int i;
  for (i = 1; i < size; i++)
    if (widths[i] != *widths) {
      break;
    }
  if (i == size) {
    int first = pWidthArray->GetInteger(pWidthArray->GetCount() - 1);
    pWidthArray->AddInteger(first + size - 1);
    pWidthArray->AddInteger(*widths);
  } else {
    CPDF_Array* pWidthArray1 = new CPDF_Array;
    pWidthArray->Add(pWidthArray1);
    for (i = 0; i < size; i++) {
      pWidthArray1->AddInteger(widths[i]);
    }
  }
  FX_Free(widths);
}
CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTW* pLogFont,
                                         FX_BOOL bVert,
                                         FX_BOOL bTranslateName) {
  LOGFONTA lfa;
  FXSYS_memcpy(&lfa, pLogFont, (char*)lfa.lfFaceName - (char*)&lfa);
  CFX_ByteString face = CFX_ByteString::FromUnicode(pLogFont->lfFaceName);
  if (face.GetLength() >= LF_FACESIZE) {
    return NULL;
  }
  FXSYS_strcpy(lfa.lfFaceName, face.c_str());
  return AddWindowsFont(&lfa, bVert, bTranslateName);
}
CFX_ByteString _FPDF_GetPSNameFromTT(HDC hDC) {
  CFX_ByteString result;
  DWORD size = ::GetFontData(hDC, 'eman', 0, NULL, 0);
  if (size != GDI_ERROR) {
    LPBYTE buffer = FX_Alloc(BYTE, size);
    ::GetFontData(hDC, 'eman', 0, buffer, size);
    result = GetNameFromTT(buffer, 6);
    FX_Free(buffer);
  }
  return result;
}
CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTA* pLogFont,
                                         FX_BOOL bVert,
                                         FX_BOOL bTranslateName) {
  pLogFont->lfHeight = -1000;
  pLogFont->lfWidth = 0;
  HGDIOBJ hFont = CreateFontIndirectA(pLogFont);
  HDC hDC = CreateCompatibleDC(NULL);
  hFont = SelectObject(hDC, hFont);
  int tm_size = GetOutlineTextMetrics(hDC, 0, NULL);
  if (tm_size == 0) {
    hFont = SelectObject(hDC, hFont);
    DeleteObject(hFont);
    DeleteDC(hDC);
    return NULL;
  }
  LPBYTE tm_buf = FX_Alloc(BYTE, tm_size);
  OUTLINETEXTMETRIC* ptm = (OUTLINETEXTMETRIC*)tm_buf;
  GetOutlineTextMetrics(hDC, tm_size, ptm);
  int flags = 0, italicangle, ascend, descend, capheight, bbox[4];
  if (pLogFont->lfItalic) {
    flags |= PDFFONT_ITALIC;
  }
  if ((pLogFont->lfPitchAndFamily & 3) == FIXED_PITCH) {
    flags |= PDFFONT_FIXEDPITCH;
  }
  if ((pLogFont->lfPitchAndFamily & 0xf8) == FF_ROMAN) {
    flags |= PDFFONT_SERIF;
  }
  if ((pLogFont->lfPitchAndFamily & 0xf8) == FF_SCRIPT) {
    flags |= PDFFONT_SCRIPT;
  }
  FX_BOOL bCJK = pLogFont->lfCharSet == CHINESEBIG5_CHARSET ||
                 pLogFont->lfCharSet == GB2312_CHARSET ||
                 pLogFont->lfCharSet == HANGEUL_CHARSET ||
                 pLogFont->lfCharSet == SHIFTJIS_CHARSET;
  CFX_ByteString basefont;
  if (bTranslateName && bCJK) {
    basefont = _FPDF_GetPSNameFromTT(hDC);
  }
  if (basefont.IsEmpty()) {
    basefont = pLogFont->lfFaceName;
  }
  italicangle = ptm->otmItalicAngle / 10;
  ascend = ptm->otmrcFontBox.top;
  descend = ptm->otmrcFontBox.bottom;
  capheight = ptm->otmsCapEmHeight;
  bbox[0] = ptm->otmrcFontBox.left;
  bbox[1] = ptm->otmrcFontBox.bottom;
  bbox[2] = ptm->otmrcFontBox.right;
  bbox[3] = ptm->otmrcFontBox.top;
  FX_Free(tm_buf);
  basefont.Replace(" ", "");
  CPDF_Dictionary* pBaseDict = new CPDF_Dictionary;
  pBaseDict->SetAtName("Type", "Font");
  CPDF_Dictionary* pFontDict = pBaseDict;
  if (!bCJK) {
    if (pLogFont->lfCharSet == ANSI_CHARSET ||
        pLogFont->lfCharSet == DEFAULT_CHARSET ||
        pLogFont->lfCharSet == SYMBOL_CHARSET) {
      if (pLogFont->lfCharSet == SYMBOL_CHARSET) {
        flags |= PDFFONT_SYMBOLIC;
      } else {
        flags |= PDFFONT_NONSYMBOLIC;
      }
      pBaseDict->SetAtName("Encoding", "WinAnsiEncoding");
    } else {
      flags |= PDFFONT_NONSYMBOLIC;
      int i;
      for (i = 0; i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes);
           i++)
        if (g_FX_CharsetUnicodes[i].m_Charset == pLogFont->lfCharSet) {
          break;
        }
      if (i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes)) {
        CPDF_Dictionary* pEncoding = new CPDF_Dictionary;
        pEncoding->SetAtName("BaseEncoding", "WinAnsiEncoding");
        CPDF_Array* pArray = new CPDF_Array;
        pArray->AddInteger(128);
        const FX_WCHAR* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
        for (int j = 0; j < 128; j++) {
          CFX_ByteString name = PDF_AdobeNameFromUnicode(pUnicodes[j]);
          if (name.IsEmpty()) {
            pArray->AddName(".notdef");
          } else {
            pArray->AddName(name);
          }
        }
        pEncoding->SetAt("Differences", pArray);
        AddIndirectObject(pEncoding);
        pBaseDict->SetAtReference("Encoding", this, pEncoding);
      }
    }
    if (pLogFont->lfWeight > FW_MEDIUM && pLogFont->lfItalic) {
      basefont += ",BoldItalic";
    } else if (pLogFont->lfWeight > FW_MEDIUM) {
      basefont += ",Bold";
    } else if (pLogFont->lfItalic) {
      basefont += ",Italic";
    }
    pBaseDict->SetAtName("Subtype", "TrueType");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtNumber("FirstChar", 32);
    pBaseDict->SetAtNumber("LastChar", 255);
    int char_widths[224];
    GetCharWidth(hDC, 32, 255, char_widths);
    CPDF_Array* pWidths = new CPDF_Array;
    for (int i = 0; i < 224; i++) {
      pWidths->AddInteger(char_widths[i]);
    }
    pBaseDict->SetAt("Widths", pWidths);
  } else {
    flags |= PDFFONT_NONSYMBOLIC;
    pFontDict = new CPDF_Dictionary;
    CFX_ByteString cmap;
    CFX_ByteString ordering;
    int supplement;
    CPDF_Array* pWidthArray = new CPDF_Array;
    switch (pLogFont->lfCharSet) {
      case CHINESEBIG5_CHARSET:
        cmap = bVert ? "ETenms-B5-V" : "ETenms-B5-H";
        ordering = "CNS1";
        supplement = 4;
        pWidthArray->AddInteger(1);
        _InsertWidthArray(hDC, 0x20, 0x7e, pWidthArray);
        break;
      case GB2312_CHARSET:
        cmap = bVert ? "GBK-EUC-V" : "GBK-EUC-H";
        ordering = "GB1", supplement = 2;
        pWidthArray->AddInteger(7716);
        _InsertWidthArray(hDC, 0x20, 0x20, pWidthArray);
        pWidthArray->AddInteger(814);
        _InsertWidthArray(hDC, 0x21, 0x7e, pWidthArray);
        break;
      case HANGEUL_CHARSET:
        cmap = bVert ? "KSCms-UHC-V" : "KSCms-UHC-H";
        ordering = "Korea1";
        supplement = 2;
        pWidthArray->AddInteger(1);
        _InsertWidthArray(hDC, 0x20, 0x7e, pWidthArray);
        break;
      case SHIFTJIS_CHARSET:
        cmap = bVert ? "90ms-RKSJ-V" : "90ms-RKSJ-H";
        ordering = "Japan1";
        supplement = 5;
        pWidthArray->AddInteger(231);
        _InsertWidthArray(hDC, 0x20, 0x7d, pWidthArray);
        pWidthArray->AddInteger(326);
        _InsertWidthArray(hDC, 0xa0, 0xa0, pWidthArray);
        pWidthArray->AddInteger(327);
        _InsertWidthArray(hDC, 0xa1, 0xdf, pWidthArray);
        pWidthArray->AddInteger(631);
        _InsertWidthArray(hDC, 0x7e, 0x7e, pWidthArray);
        break;
    }
    pBaseDict->SetAtName("Subtype", "Type0");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtName("Encoding", cmap);
    pFontDict->SetAt("W", pWidthArray);
    pFontDict->SetAtName("Type", "Font");
    pFontDict->SetAtName("Subtype", "CIDFontType2");
    pFontDict->SetAtName("BaseFont", basefont);
    CPDF_Dictionary* pCIDSysInfo = new CPDF_Dictionary;
    pCIDSysInfo->SetAtString("Registry", "Adobe");
    pCIDSysInfo->SetAtString("Ordering", ordering);
    pCIDSysInfo->SetAtInteger("Supplement", supplement);
    pFontDict->SetAt("CIDSystemInfo", pCIDSysInfo);
    CPDF_Array* pArray = new CPDF_Array;
    pBaseDict->SetAt("DescendantFonts", pArray);
    AddIndirectObject(pFontDict);
    pArray->AddReference(this, pFontDict);
  }
  AddIndirectObject(pBaseDict);
  CPDF_Dictionary* pFontDesc = new CPDF_Dictionary;
  pFontDesc->SetAtName("Type", "FontDescriptor");
  pFontDesc->SetAtName("FontName", basefont);
  pFontDesc->SetAtInteger("Flags", flags);
  CPDF_Array* pBBox = new CPDF_Array;
  for (int i = 0; i < 4; i++) {
    pBBox->AddInteger(bbox[i]);
  }
  pFontDesc->SetAt("FontBBox", pBBox);
  pFontDesc->SetAtInteger("ItalicAngle", italicangle);
  pFontDesc->SetAtInteger("Ascent", ascend);
  pFontDesc->SetAtInteger("Descent", descend);
  pFontDesc->SetAtInteger("CapHeight", capheight);
  pFontDesc->SetAtInteger("StemV", pLogFont->lfWeight / 5);
  AddIndirectObject(pFontDesc);
  pFontDict->SetAtReference("FontDescriptor", this, pFontDesc);
  hFont = SelectObject(hDC, hFont);
  DeleteObject(hFont);
  DeleteDC(hDC);
  return LoadFont(pBaseDict);
}
#endif

#if (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_)
uint32_t FX_GetLangHashCode(const FX_CHAR* pStr) {
  FXSYS_assert(pStr);
  int32_t iLength = FXSYS_strlen(pStr);
  const FX_CHAR* pStrEnd = pStr + iLength;
  uint32_t uHashCode = 0;
  while (pStr < pStrEnd) {
    uHashCode = 31 * uHashCode + tolower(*pStr++);
  }
  return uHashCode;
}
struct FX_LANG2CS {
  FX_DWORD uLang;
  int uCharset;
} * FX_LPLANG2CS;
static const FX_LANG2CS gs_FXLang2CharsetTable[] = {
    {3109, 0},         {3121, 178}, {3129, 162}, {3139, 204}, {3141, 204},
    {3166, 0},         {3184, 238}, {3197, 0},   {3201, 0},   {3239, 161},
    {3241, 0},         {3246, 0},   {3247, 186}, {3248, 0},   {3259, 178},
    {3267, 0},         {3273, 0},   {3276, 0},   {3301, 0},   {3310, 1},
    {3325, 177},       {3329, 1},   {3338, 238}, {3341, 238}, {3345, 1},
    {3355, 0},         {3370, 0},   {3371, 0},   {3383, 128}, {3424, 204},
    {3427, 1},         {3428, 129}, {3436, 178}, {3464, 186}, {3466, 186},
    {3486, 204},       {3487, 0},   {3493, 1},   {3494, 0},   {3508, 0},
    {3518, 0},         {3520, 0},   {3569, 1},   {3580, 238}, {3588, 0},
    {3645, 238},       {3651, 204}, {3672, 238}, {3673, 238}, {3678, 238},
    {3679, 238},       {3683, 0},   {3684, 0},   {3693, 1},   {3697, 1},
    {3700, 222},       {3710, 162}, {3734, 204}, {3741, 178}, {3749, 162},
    {3763, 163},       {3886, 134}, {105943, 0}, {106375, 1}, {3923451837, 134},
    {3923451838, 136},
};
static FX_WORD FX_GetCsFromLangCode(uint32_t uCode) {
  int32_t iStart = 0;
  int32_t iEnd = sizeof(gs_FXLang2CharsetTable) / sizeof(FX_LANG2CS) - 1;
  while (iStart <= iEnd) {
    int32_t iMid = (iStart + iEnd) / 2;
    const FX_LANG2CS& charset = gs_FXLang2CharsetTable[iMid];
    if (uCode == charset.uLang) {
      return charset.uCharset;
    }
    if (uCode < charset.uLang) {
      iEnd = iMid - 1;
    } else {
      iStart = iMid + 1;
    }
  };
  return 0;
}
static FX_WORD FX_GetCharsetFromLang(const FX_CHAR* pLang, int32_t iLength) {
  FXSYS_assert(pLang);
  if (iLength < 0) {
    iLength = FXSYS_strlen(pLang);
  }
  uint32_t uHash = FX_GetLangHashCode(pLang);
  return FX_GetCsFromLangCode(uHash);
}
static void _CFString2CFXByteString(CFStringRef src, CFX_ByteString& dest) {
  SInt32 len = CFStringGetLength(src);
  CFRange range = CFRangeMake(0, len);
  CFIndex used = 0;
  UInt8* pBuffer = (UInt8*)calloc(len + 1, sizeof(UInt8));
  CFStringGetBytes(src, range, kCFStringEncodingASCII, 0, false, pBuffer, len,
                   &used);
  dest = (FX_CHAR*)pBuffer;
  free(pBuffer);
}
FX_BOOL IsHasCharSet(CFArrayRef languages, const CFX_DWordArray& charSets) {
  int iCount = charSets.GetSize();
  for (int i = 0; i < CFArrayGetCount(languages); ++i) {
    CFStringRef language = (CFStringRef)CFArrayGetValueAtIndex(languages, i);
    FX_DWORD CharSet = FX_GetCharsetFromLang(
        CFStringGetCStringPtr(language, kCFStringEncodingMacRoman), -1);
    for (int j = 0; j < iCount; ++j) {
      if (CharSet == charSets[j]) {
        return TRUE;
      }
    }
  }
  return FALSE;
}
void FX_GetCharWidth(CTFontRef font, UniChar start, UniChar end, int* width) {
  CGFloat size = CTFontGetSize(font);
  for (; start <= end; ++start) {
    CGGlyph pGlyph = 0;
    CFIndex count = 1;
    CTFontGetGlyphsForCharacters(font, &start, &pGlyph, count);
    CGSize advances;
    CTFontGetAdvancesForGlyphs(font, kCTFontDefaultOrientation, &pGlyph,
                               &advances, 1);
    *width = (int)(advances.width / size * 1000);
    width++;
  }
}
static void _InsertWidthArray(CTFontRef font,
                              int start,
                              int end,
                              CPDF_Array* pWidthArray) {
  int size = end - start + 1;
  int* widths = FX_Alloc(int, size);
  FX_GetCharWidth(font, start, end, widths);
  int i;
  for (i = 1; i < size; i++)
    if (widths[i] != *widths) {
      break;
    }
  if (i == size) {
    int first = pWidthArray->GetInteger(pWidthArray->GetCount() - 1);
    pWidthArray->AddInteger(first + size - 1);
    pWidthArray->AddInteger(*widths);
  } else {
    CPDF_Array* pWidthArray1 = new CPDF_Array;
    pWidthArray->Add(pWidthArray1);
    for (i = 0; i < size; i++) {
      pWidthArray1->AddInteger(widths[i]);
    }
  }
  FX_Free(widths);
}
CPDF_Font* CPDF_Document::AddMacFont(CTFontRef pFont,
                                     FX_BOOL bVert,
                                     FX_BOOL bTranslateName) {
  CTFontRef font = (CTFontRef)pFont;
  CTFontDescriptorRef descriptor = CTFontCopyFontDescriptor(font);
  if (!descriptor) {
    return NULL;
  }
  CFX_ByteString basefont;
  FX_BOOL bCJK = FALSE;
  int flags = 0, italicangle = 0, ascend = 0, descend = 0, capheight = 0,
      bbox[4];
  FXSYS_memset(bbox, 0, sizeof(int) * 4);
  CFArrayRef languages = (CFArrayRef)CTFontDescriptorCopyAttribute(
      descriptor, kCTFontLanguagesAttribute);
  if (!languages) {
    CFRelease(descriptor);
    return NULL;
  }
  CFX_DWordArray charSets;
  charSets.Add(FXFONT_CHINESEBIG5_CHARSET);
  charSets.Add(FXFONT_GB2312_CHARSET);
  charSets.Add(FXFONT_HANGEUL_CHARSET);
  charSets.Add(FXFONT_SHIFTJIS_CHARSET);
  if (IsHasCharSet(languages, charSets)) {
    bCJK = TRUE;
  }
  CFRelease(descriptor);
  CFDictionaryRef traits = (CFDictionaryRef)CTFontCopyTraits(font);
  if (!traits) {
    CFRelease(languages);
    return NULL;
  }
  CFNumberRef sybolicTrait =
      (CFNumberRef)CFDictionaryGetValue(traits, kCTFontSymbolicTrait);
  CTFontSymbolicTraits trait = 0;
  CFNumberGetValue(sybolicTrait, kCFNumberSInt32Type, &trait);
  if (trait & kCTFontItalicTrait) {
    flags |= PDFFONT_ITALIC;
  }
  if (trait & kCTFontMonoSpaceTrait) {
    flags |= PDFFONT_FIXEDPITCH;
  }
  if (trait & kCTFontModernSerifsClass) {
    flags |= PDFFONT_SERIF;
  }
  if (trait & kCTFontScriptsClass) {
    flags |= PDFFONT_SCRIPT;
  }
  CFNumberRef weightTrait =
      (CFNumberRef)CFDictionaryGetValue(traits, kCTFontWeightTrait);
  Float32 weight = 0;
  CFNumberGetValue(weightTrait, kCFNumberFloat32Type, &weight);
  italicangle = CTFontGetSlantAngle(font);
  ascend = CTFontGetAscent(font);
  descend = CTFontGetDescent(font);
  capheight = CTFontGetCapHeight(font);
  CGRect box = CTFontGetBoundingBox(font);
  bbox[0] = box.origin.x;
  bbox[1] = box.origin.y;
  bbox[2] = box.origin.x + box.size.width;
  bbox[3] = box.origin.y + box.size.height;
  if (bTranslateName && bCJK) {
    CFStringRef postName = CTFontCopyPostScriptName(font);
    _CFString2CFXByteString(postName, basefont);
    CFRelease(postName);
  }
  if (basefont.IsEmpty()) {
    CFStringRef fullName = CTFontCopyFullName(font);
    _CFString2CFXByteString(fullName, basefont);
    CFRelease(fullName);
  }
  basefont.Replace(" ", "");
  CPDF_Dictionary* pBaseDict = new CPDF_Dictionary;
  CPDF_Dictionary* pFontDict = pBaseDict;
  if (!bCJK) {
    charSets.RemoveAll();
    charSets.Add(FXFONT_ANSI_CHARSET);
    charSets.Add(FXFONT_DEFAULT_CHARSET);
    charSets.Add(FXFONT_SYMBOL_CHARSET);
    if (IsHasCharSet(languages, charSets)) {
      charSets.RemoveAll();
      charSets.Add(FXFONT_SYMBOL_CHARSET);
      if (IsHasCharSet(languages, charSets)) {
        flags |= PDFFONT_SYMBOLIC;
      } else {
        flags |= PDFFONT_NONSYMBOLIC;
      }
      pBaseDict->SetAtName("Encoding", "WinAnsiEncoding");
    } else {
      flags |= PDFFONT_NONSYMBOLIC;
      size_t i;
      for (i = 0; i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes);
           i++) {
        charSets.RemoveAll();
        charSets.Add(g_FX_CharsetUnicodes[i].m_Charset);
        if (IsHasCharSet(languages, charSets)) {
          break;
        }
      }
      if (i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes)) {
        CPDF_Dictionary* pEncoding = new CPDF_Dictionary;
        pEncoding->SetAtName("BaseEncoding", "WinAnsiEncoding");
        CPDF_Array* pArray = new CPDF_Array;
        pArray->AddInteger(128);
        const FX_WCHAR* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
        for (int j = 0; j < 128; j++) {
          CFX_ByteString name = PDF_AdobeNameFromUnicode(pUnicodes[j]);
          if (name.IsEmpty()) {
            pArray->AddName(".notdef");
          } else {
            pArray->AddName(name);
          }
        }
        pEncoding->SetAt("Differences", pArray);
        AddIndirectObject(pEncoding);
        pBaseDict->SetAtReference("Encoding", this, pEncoding);
      }
    }
    if (weight > 0.0 && trait & kCTFontItalicTrait) {
      basefont += ",BoldItalic";
    } else if (weight > 0.0) {
      basefont += ",Bold";
    } else if (trait & kCTFontItalicTrait) {
      basefont += ",Italic";
    }
    pBaseDict->SetAtName("Subtype", "TrueType");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtNumber("FirstChar", 32);
    pBaseDict->SetAtNumber("LastChar", 255);
    int char_widths[224];
    FX_GetCharWidth(font, 32, 255, char_widths);
    CPDF_Array* pWidths = new CPDF_Array;
    for (int i = 0; i < 224; i++) {
      pWidths->AddInteger(char_widths[i]);
    }
    pBaseDict->SetAt("Widths", pWidths);
  } else {
    flags |= PDFFONT_NONSYMBOLIC;
    CPDF_Array* pArray = NULL;
    pFontDict = new CPDF_Dictionary;
    CFX_ByteString cmap;
    CFX_ByteString ordering;
    int supplement;
    FX_BOOL bFound = FALSE;
    CPDF_Array* pWidthArray = new CPDF_Array;
    charSets.RemoveAll();
    charSets.Add(FXFONT_CHINESEBIG5_CHARSET);
    if (IsHasCharSet(languages, charSets)) {
      cmap = bVert ? "ETenms-B5-V" : "ETenms-B5-H";
      ordering = "CNS1";
      supplement = 4;
      pWidthArray->AddInteger(1);
      _InsertWidthArray(font, 0x20, 0x7e, pWidthArray);
      bFound = TRUE;
    }
    charSets.RemoveAll();
    charSets.Add(FXFONT_GB2312_CHARSET);
    if (!bFound && IsHasCharSet(languages, charSets)) {
      cmap = bVert ? "GBK-EUC-V" : "GBK-EUC-H";
      ordering = "GB1", supplement = 2;
      pWidthArray->AddInteger(7716);
      _InsertWidthArray(font, 0x20, 0x20, pWidthArray);
      pWidthArray->AddInteger(814);
      _InsertWidthArray(font, 0x21, 0x7e, pWidthArray);
      bFound = TRUE;
    }
    charSets.RemoveAll();
    charSets.Add(FXFONT_HANGEUL_CHARSET);
    if (!bFound && IsHasCharSet(languages, charSets)) {
      cmap = bVert ? "KSCms-UHC-V" : "KSCms-UHC-H";
      ordering = "Korea1";
      supplement = 2;
      pWidthArray->AddInteger(1);
      _InsertWidthArray(font, 0x20, 0x7e, pWidthArray);
      bFound = TRUE;
    }
    charSets.RemoveAll();
    charSets.Add(FXFONT_SHIFTJIS_CHARSET);
    if (!bFound && IsHasCharSet(languages, charSets)) {
      cmap = bVert ? "90ms-RKSJ-V" : "90ms-RKSJ-H";
      ordering = "Japan1";
      supplement = 5;
      pWidthArray->AddInteger(231);
      _InsertWidthArray(font, 0x20, 0x7d, pWidthArray);
      pWidthArray->AddInteger(326);
      _InsertWidthArray(font, 0xa0, 0xa0, pWidthArray);
      pWidthArray->AddInteger(327);
      _InsertWidthArray(font, 0xa1, 0xdf, pWidthArray);
      pWidthArray->AddInteger(631);
      _InsertWidthArray(font, 0x7e, 0x7e, pWidthArray);
    }
    pBaseDict->SetAtName("Subtype", "Type0");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtName("Encoding", cmap);
    pFontDict->SetAt("W", pWidthArray);
    pFontDict->SetAtName("Type", "Font");
    pFontDict->SetAtName("Subtype", "CIDFontType2");
    pFontDict->SetAtName("BaseFont", basefont);
    CPDF_Dictionary* pCIDSysInfo = new CPDF_Dictionary;
    pCIDSysInfo->SetAtString("Registry", "Adobe");
    pCIDSysInfo->SetAtString("Ordering", ordering);
    pCIDSysInfo->SetAtInteger("Supplement", supplement);
    pFontDict->SetAt("CIDSystemInfo", pCIDSysInfo);
    pArray = new CPDF_Array;
    pBaseDict->SetAt("DescendantFonts", pArray);
    AddIndirectObject(pFontDict);
    pArray->AddReference(this, pFontDict);
  }
  AddIndirectObject(pBaseDict);
  CPDF_Dictionary* pFontDesc = new CPDF_Dictionary;
  pFontDesc->SetAtName("Type", "FontDescriptor");
  pFontDesc->SetAtName("FontName", basefont);
  pFontDesc->SetAtInteger("Flags", flags);
  CPDF_Array* pBBox = new CPDF_Array;
  for (int i = 0; i < 4; i++) {
    pBBox->AddInteger(bbox[i]);
  }
  pFontDesc->SetAt("FontBBox", pBBox);
  pFontDesc->SetAtInteger("ItalicAngle", italicangle);
  pFontDesc->SetAtInteger("Ascent", ascend);
  pFontDesc->SetAtInteger("Descent", descend);
  pFontDesc->SetAtInteger("CapHeight", capheight);
  CGFloat fStemV = 0;
  int16_t min_width = SHRT_MAX;
  static const UniChar stem_chars[] = {'i', 'I', '!', '1'};
  const size_t count = sizeof(stem_chars) / sizeof(stem_chars[0]);
  CGGlyph glyphs[count];
  CGRect boundingRects[count];
  if (CTFontGetGlyphsForCharacters(font, stem_chars, glyphs, count)) {
    CTFontGetBoundingRectsForGlyphs(font, kCTFontHorizontalOrientation, glyphs,
                                    boundingRects, count);
    for (size_t i = 0; i < count; i++) {
      int16_t width = boundingRects[i].size.width;
      if (width > 0 && width < min_width) {
        min_width = width;
        fStemV = min_width;
      }
    }
  }
  pFontDesc->SetAtInteger("StemV", fStemV);
  AddIndirectObject(pFontDesc);
  pFontDict->SetAtReference("FontDescriptor", this, pFontDesc);
  CFRelease(traits);
  CFRelease(languages);
  return LoadFont(pBaseDict);
}
#endif  // (_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_)

static void _InsertWidthArray1(CFX_Font* pFont,
                               CFX_UnicodeEncoding* pEncoding,
                               FX_WCHAR start,
                               FX_WCHAR end,
                               CPDF_Array* pWidthArray) {
  int size = end - start + 1;
  int* widths = FX_Alloc(int, size);
  int i;
  for (i = 0; i < size; i++) {
    int glyph_index = pEncoding->GlyphFromCharCode(start + i);
    widths[i] = pFont->GetGlyphWidth(glyph_index);
  }
  for (i = 1; i < size; i++)
    if (widths[i] != *widths) {
      break;
    }
  if (i == size) {
    int first = pWidthArray->GetInteger(pWidthArray->GetCount() - 1);
    pWidthArray->AddInteger(first + size - 1);
    pWidthArray->AddInteger(*widths);
  } else {
    CPDF_Array* pWidthArray1 = new CPDF_Array;
    pWidthArray->Add(pWidthArray1);
    for (i = 0; i < size; i++) {
      pWidthArray1->AddInteger(widths[i]);
    }
  }
  FX_Free(widths);
}

CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, FX_BOOL bVert) {
  if (!pFont) {
    return NULL;
  }
  FX_BOOL bCJK = charset == FXFONT_CHINESEBIG5_CHARSET ||
                 charset == FXFONT_GB2312_CHARSET ||
                 charset == FXFONT_HANGEUL_CHARSET ||
                 charset == FXFONT_SHIFTJIS_CHARSET;
  CFX_ByteString basefont = pFont->GetFamilyName();
  basefont.Replace(" ", "");
  int flags = 0;
  if (pFont->IsBold()) {
    flags |= PDFFONT_FORCEBOLD;
  }
  if (pFont->IsItalic()) {
    flags |= PDFFONT_ITALIC;
  }
  if (pFont->IsFixedWidth()) {
    flags |= PDFFONT_FIXEDPITCH;
  }
  CPDF_Dictionary* pBaseDict = new CPDF_Dictionary;
  pBaseDict->SetAtName("Type", "Font");
  std::unique_ptr<CFX_UnicodeEncoding> pEncoding(
      new CFX_UnicodeEncoding(pFont));
  CPDF_Dictionary* pFontDict = pBaseDict;
  if (!bCJK) {
    CPDF_Array* pWidths = new CPDF_Array;
    int charcode;
    for (charcode = 32; charcode < 128; charcode++) {
      int glyph_index = pEncoding->GlyphFromCharCode(charcode);
      int char_width = pFont->GetGlyphWidth(glyph_index);
      pWidths->AddInteger(char_width);
    }
    if (charset == FXFONT_ANSI_CHARSET || charset == FXFONT_DEFAULT_CHARSET ||
        charset == FXFONT_SYMBOL_CHARSET) {
      if (charset == FXFONT_SYMBOL_CHARSET) {
        flags |= PDFFONT_SYMBOLIC;
      } else {
        flags |= PDFFONT_NONSYMBOLIC;
      }
      pBaseDict->SetAtName("Encoding", "WinAnsiEncoding");
      for (charcode = 128; charcode <= 255; charcode++) {
        int glyph_index = pEncoding->GlyphFromCharCode(charcode);
        int char_width = pFont->GetGlyphWidth(glyph_index);
        pWidths->AddInteger(char_width);
      }
    } else {
      flags |= PDFFONT_NONSYMBOLIC;
      size_t i;
      for (i = 0; i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes);
           i++)
        if (g_FX_CharsetUnicodes[i].m_Charset == charset) {
          break;
        }
      if (i < sizeof g_FX_CharsetUnicodes / sizeof(FX_CharsetUnicodes)) {
        CPDF_Dictionary* pEncodingDict = new CPDF_Dictionary;
        pEncodingDict->SetAtName("BaseEncoding", "WinAnsiEncoding");
        CPDF_Array* pArray = new CPDF_Array;
        pArray->AddInteger(128);
        const FX_WCHAR* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
        for (int j = 0; j < 128; j++) {
          CFX_ByteString name = PDF_AdobeNameFromUnicode(pUnicodes[j]);
          if (name.IsEmpty()) {
            pArray->AddName(".notdef");
          } else {
            pArray->AddName(name);
          }
          int glyph_index = pEncoding->GlyphFromCharCode(pUnicodes[j]);
          int char_width = pFont->GetGlyphWidth(glyph_index);
          pWidths->AddInteger(char_width);
        }
        pEncodingDict->SetAt("Differences", pArray);
        AddIndirectObject(pEncodingDict);
        pBaseDict->SetAtReference("Encoding", this, pEncodingDict);
      }
    }
    if (pFont->IsBold() && pFont->IsItalic()) {
      basefont += ",BoldItalic";
    } else if (pFont->IsBold()) {
      basefont += ",Bold";
    } else if (pFont->IsItalic()) {
      basefont += ",Italic";
    }
    pBaseDict->SetAtName("Subtype", "TrueType");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtNumber("FirstChar", 32);
    pBaseDict->SetAtNumber("LastChar", 255);
    pBaseDict->SetAt("Widths", pWidths);
  } else {
    flags |= PDFFONT_NONSYMBOLIC;
    pFontDict = new CPDF_Dictionary;
    CFX_ByteString cmap;
    CFX_ByteString ordering;
    int supplement;
    CPDF_Array* pWidthArray = new CPDF_Array;
    switch (charset) {
      case FXFONT_CHINESEBIG5_CHARSET:
        cmap = bVert ? "ETenms-B5-V" : "ETenms-B5-H";
        ordering = "CNS1";
        supplement = 4;
        pWidthArray->AddInteger(1);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7e, pWidthArray);
        break;
      case FXFONT_GB2312_CHARSET:
        cmap = bVert ? "GBK-EUC-V" : "GBK-EUC-H";
        ordering = "GB1", supplement = 2;
        pWidthArray->AddInteger(7716);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x20, pWidthArray);
        pWidthArray->AddInteger(814);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x21, 0x7e, pWidthArray);
        break;
      case FXFONT_HANGEUL_CHARSET:
        cmap = bVert ? "KSCms-UHC-V" : "KSCms-UHC-H";
        ordering = "Korea1";
        supplement = 2;
        pWidthArray->AddInteger(1);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7e, pWidthArray);
        break;
      case FXFONT_SHIFTJIS_CHARSET:
        cmap = bVert ? "90ms-RKSJ-V" : "90ms-RKSJ-H";
        ordering = "Japan1";
        supplement = 5;
        pWidthArray->AddInteger(231);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x20, 0x7d, pWidthArray);
        pWidthArray->AddInteger(326);
        _InsertWidthArray1(pFont, pEncoding.get(), 0xa0, 0xa0, pWidthArray);
        pWidthArray->AddInteger(327);
        _InsertWidthArray1(pFont, pEncoding.get(), 0xa1, 0xdf, pWidthArray);
        pWidthArray->AddInteger(631);
        _InsertWidthArray1(pFont, pEncoding.get(), 0x7e, 0x7e, pWidthArray);
        break;
    }
    pBaseDict->SetAtName("Subtype", "Type0");
    pBaseDict->SetAtName("BaseFont", basefont);
    pBaseDict->SetAtName("Encoding", cmap);
    pFontDict->SetAt("W", pWidthArray);
    pFontDict->SetAtName("Type", "Font");
    pFontDict->SetAtName("Subtype", "CIDFontType2");
    pFontDict->SetAtName("BaseFont", basefont);
    CPDF_Dictionary* pCIDSysInfo = new CPDF_Dictionary;
    pCIDSysInfo->SetAtString("Registry", "Adobe");
    pCIDSysInfo->SetAtString("Ordering", ordering);
    pCIDSysInfo->SetAtInteger("Supplement", supplement);
    pFontDict->SetAt("CIDSystemInfo", pCIDSysInfo);
    CPDF_Array* pArray = new CPDF_Array;
    pBaseDict->SetAt("DescendantFonts", pArray);
    AddIndirectObject(pFontDict);
    pArray->AddReference(this, pFontDict);
  }
  AddIndirectObject(pBaseDict);
  CPDF_Dictionary* pFontDesc = new CPDF_Dictionary;
  pFontDesc->SetAtName("Type", "FontDescriptor");
  pFontDesc->SetAtName("FontName", basefont);
  pFontDesc->SetAtInteger("Flags", flags);
  pFontDesc->SetAtInteger(
      "ItalicAngle",
      pFont->GetSubstFont() ? pFont->GetSubstFont()->m_ItalicAngle : 0);
  pFontDesc->SetAtInteger("Ascent", pFont->GetAscent());
  pFontDesc->SetAtInteger("Descent", pFont->GetDescent());
  FX_RECT bbox;
  pFont->GetBBox(bbox);
  CPDF_Array* pBBox = new CPDF_Array;
  pBBox->AddInteger(bbox.left);
  pBBox->AddInteger(bbox.bottom);
  pBBox->AddInteger(bbox.right);
  pBBox->AddInteger(bbox.top);
  pFontDesc->SetAt("FontBBox", pBBox);
  int32_t nStemV = 0;
  if (pFont->GetSubstFont()) {
    nStemV = pFont->GetSubstFont()->m_Weight / 5;
  } else {
    static const FX_CHAR stem_chars[] = {'i', 'I', '!', '1'};
    const size_t count = sizeof(stem_chars) / sizeof(stem_chars[0]);
    FX_DWORD glyph = pEncoding->GlyphFromCharCode(stem_chars[0]);
    nStemV = pFont->GetGlyphWidth(glyph);
    for (size_t i = 1; i < count; i++) {
      glyph = pEncoding->GlyphFromCharCode(stem_chars[i]);
      int width = pFont->GetGlyphWidth(glyph);
      if (width > 0 && width < nStemV) {
        nStemV = width;
      }
    }
  }
  pFontDesc->SetAtInteger("StemV", nStemV);
  AddIndirectObject(pFontDesc);
  pFontDict->SetAtReference("FontDescriptor", this, pFontDesc);
  return LoadFont(pBaseDict);
}
static int InsertDeletePDFPage(CPDF_Document* pDoc,
                               CPDF_Dictionary* pPages,
                               int nPagesToGo,
                               CPDF_Dictionary* pPage,
                               FX_BOOL bInsert,
                               CFX_ArrayTemplate<CPDF_Dictionary*>& stackList) {
  CPDF_Array* pKidList = pPages->GetArray("Kids");
  if (!pKidList) {
    return -1;
  }
  int nKids = pKidList->GetCount();
  for (int i = 0; i < nKids; i++) {
    CPDF_Dictionary* pKid = pKidList->GetDict(i);
    if (pKid->GetString("Type") == "Page") {
      if (nPagesToGo == 0) {
        if (bInsert) {
          pKidList->InsertAt(i, new CPDF_Reference(pDoc, pPage->GetObjNum()));
          pPage->SetAtReference("Parent", pDoc, pPages->GetObjNum());
        } else {
          pKidList->RemoveAt(i);
        }
        pPages->SetAtInteger("Count",
                             pPages->GetInteger("Count") + (bInsert ? 1 : -1));
        return 1;
      }
      nPagesToGo--;
    } else {
      int nPages = pKid->GetInteger("Count");
      if (nPagesToGo < nPages) {
        int stackCount = stackList.GetSize();
        for (int j = 0; j < stackCount; ++j) {
          if (pKid == stackList[j]) {
            return -1;
          }
        }
        stackList.Add(pKid);
        if (InsertDeletePDFPage(pDoc, pKid, nPagesToGo, pPage, bInsert,
                                stackList) < 0) {
          return -1;
        }
        stackList.RemoveAt(stackCount);
        pPages->SetAtInteger("Count",
                             pPages->GetInteger("Count") + (bInsert ? 1 : -1));
        return 1;
      }
      nPagesToGo -= nPages;
    }
  }
  return 0;
}
static int InsertNewPage(CPDF_Document* pDoc,
                         int iPage,
                         CPDF_Dictionary* pPageDict,
                         CFX_DWordArray& pageList) {
  CPDF_Dictionary* pRoot = pDoc->GetRoot();
  if (!pRoot) {
    return -1;
  }
  CPDF_Dictionary* pPages = pRoot->GetDict("Pages");
  if (!pPages) {
    return -1;
  }
  int nPages = pDoc->GetPageCount();
  if (iPage < 0 || iPage > nPages) {
    return -1;
  }
  if (iPage == nPages) {
    CPDF_Array* pPagesList = pPages->GetArray("Kids");
    if (!pPagesList) {
      pPagesList = new CPDF_Array;
      pPages->SetAt("Kids", pPagesList);
    }
    pPagesList->Add(pPageDict, pDoc);
    pPages->SetAtInteger("Count", nPages + 1);
    pPageDict->SetAtReference("Parent", pDoc, pPages->GetObjNum());
  } else {
    CFX_ArrayTemplate<CPDF_Dictionary*> stack;
    stack.Add(pPages);
    if (InsertDeletePDFPage(pDoc, pPages, iPage, pPageDict, TRUE, stack) < 0) {
      return -1;
    }
  }
  pageList.InsertAt(iPage, pPageDict->GetObjNum());
  return iPage;
}
CPDF_Dictionary* CPDF_Document::CreateNewPage(int iPage) {
  CPDF_Dictionary* pDict = new CPDF_Dictionary;
  pDict->SetAtName("Type", "Page");
  FX_DWORD dwObjNum = AddIndirectObject(pDict);
  if (InsertNewPage(this, iPage, pDict, m_PageList) < 0) {
    ReleaseIndirectObject(dwObjNum);
    return NULL;
  }
  return pDict;
}

CPDF_Font* CPDF_Document::AddStandardFont(const FX_CHAR* font,
                                          CPDF_FontEncoding* pEncoding) {
  CFX_ByteString name(font);
  if (PDF_GetStandardFontName(&name) < 0)
    return nullptr;
  return GetPageData()->GetStandardFont(name, pEncoding);
}

void CPDF_Document::DeletePage(int iPage) {
  CPDF_Dictionary* pRoot = GetRoot();
  if (!pRoot) {
    return;
  }
  CPDF_Dictionary* pPages = pRoot->GetDict("Pages");
  if (!pPages) {
    return;
  }
  int nPages = pPages->GetInteger("Count");
  if (iPage < 0 || iPage >= nPages) {
    return;
  }
  CFX_ArrayTemplate<CPDF_Dictionary*> stack;
  stack.Add(pPages);
  if (InsertDeletePDFPage(this, pPages, iPage, NULL, FALSE, stack) < 0) {
    return;
  }
  m_PageList.RemoveAt(iPage);
}
CPDF_Object* FPDFAPI_GetPageAttr(CPDF_Dictionary* pPageDict,
                                 const CFX_ByteStringC& name);
void FPDFAPI_FlatPageAttr(CPDF_Dictionary* pPageDict,
                          const CFX_ByteStringC& name) {
  if (pPageDict->KeyExist(name)) {
    return;
  }
  CPDF_Object* pObj = FPDFAPI_GetPageAttr(pPageDict, name);
  if (pObj) {
    pPageDict->SetAt(name, pObj->Clone());
  }
}