// 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 "core/fpdfapi/parser/cpdf_document.h"
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/font/cpdf_fontencoding.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/page/cpdf_pagemodule.h"
#include "core/fpdfapi/page/pageint.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_linearized_header.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_parser.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fpdfapi/render/cpdf_dibsource.h"
#include "core/fpdfapi/render/cpdf_docrenderdata.h"
#include "core/fxcodec/JBig2_DocumentContext.h"
#include "core/fxge/cfx_unicodeencoding.h"
#include "core/fxge/fx_font.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
namespace {
const int FX_MAX_PAGE_LEVEL = 1024;
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
const uint16_t 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,
};
struct FX_CharsetUnicodes {
uint8_t m_Charset;
const uint16_t* m_pUnicodes;
};
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},
};
void InsertWidthArrayImpl(int* widths, int size, CPDF_Array* pWidthArray) {
int i;
for (i = 1; i < size; i++) {
if (widths[i] != *widths)
break;
}
if (i == size) {
int first = pWidthArray->GetIntegerAt(pWidthArray->GetCount() - 1);
pWidthArray->AddNew<CPDF_Number>(first + size - 1);
pWidthArray->AddNew<CPDF_Number>(*widths);
} else {
CPDF_Array* pWidthArray1 = pWidthArray->AddNew<CPDF_Array>();
for (i = 0; i < size; i++)
pWidthArray1->AddNew<CPDF_Number>(widths[i]);
}
FX_Free(widths);
}
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
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);
InsertWidthArrayImpl(widths, size, pWidthArray);
}
CFX_ByteString FPDF_GetPSNameFromTT(HDC hDC) {
CFX_ByteString result;
DWORD size = ::GetFontData(hDC, 'eman', 0, nullptr, 0);
if (size != GDI_ERROR) {
LPBYTE buffer = FX_Alloc(BYTE, size);
::GetFontData(hDC, 'eman', 0, buffer, size);
result = GetNameFromTT(buffer, size, 6);
FX_Free(buffer);
}
return result;
}
#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
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);
}
InsertWidthArrayImpl(widths, size, pWidthArray);
}
int CountPages(CPDF_Dictionary* pPages,
std::set<CPDF_Dictionary*>* visited_pages) {
int count = pPages->GetIntegerFor("Count");
if (count > 0 && count < FPDF_PAGE_MAX_NUM)
return count;
CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
if (!pKidList)
return 0;
count = 0;
for (size_t i = 0; i < pKidList->GetCount(); i++) {
CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
if (!pKid || pdfium::ContainsKey(*visited_pages, pKid))
continue;
if (pKid->KeyExist("Kids")) {
// Use |visited_pages| to help detect circular references of pages.
pdfium::ScopedSetInsertion<CPDF_Dictionary*> local_add(visited_pages,
pKid);
count += CountPages(pKid, visited_pages);
} else {
// This page is a leaf node.
count++;
}
}
pPages->SetNewFor<CPDF_Number>("Count", count);
return count;
}
int CalculateFlags(bool bold,
bool italic,
bool fixedPitch,
bool serif,
bool script,
bool symbolic) {
int flags = 0;
if (bold)
flags |= FXFONT_BOLD;
if (italic)
flags |= FXFONT_ITALIC;
if (fixedPitch)
flags |= FXFONT_FIXED_PITCH;
if (serif)
flags |= FXFONT_SERIF;
if (script)
flags |= FXFONT_SCRIPT;
if (symbolic)
flags |= FXFONT_SYMBOLIC;
else
flags |= FXFONT_NONSYMBOLIC;
return flags;
}
void ProcessNonbCJK(CPDF_Dictionary* pBaseDict,
bool bold,
bool italic,
CFX_ByteString basefont,
std::unique_ptr<CPDF_Array> pWidths) {
if (bold && italic)
basefont += ",BoldItalic";
else if (bold)
basefont += ",Bold";
else if (italic)
basefont += ",Italic";
pBaseDict->SetNewFor<CPDF_Name>("Subtype", "TrueType");
pBaseDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
pBaseDict->SetNewFor<CPDF_Number>("FirstChar", 32);
pBaseDict->SetNewFor<CPDF_Number>("LastChar", 255);
pBaseDict->SetFor("Widths", std::move(pWidths));
}
std::unique_ptr<CPDF_Dictionary> CalculateFontDesc(
CPDF_Document* pDoc,
CFX_ByteString basefont,
int flags,
int italicangle,
int ascend,
int descend,
std::unique_ptr<CPDF_Array> bbox,
int32_t stemV) {
auto pFontDesc =
pdfium::MakeUnique<CPDF_Dictionary>(pDoc->GetByteStringPool());
pFontDesc->SetNewFor<CPDF_Name>("Type", "FontDescriptor");
pFontDesc->SetNewFor<CPDF_Name>("FontName", basefont);
pFontDesc->SetNewFor<CPDF_Number>("Flags", flags);
pFontDesc->SetFor("FontBBox", std::move(bbox));
pFontDesc->SetNewFor<CPDF_Number>("ItalicAngle", italicangle);
pFontDesc->SetNewFor<CPDF_Number>("Ascent", ascend);
pFontDesc->SetNewFor<CPDF_Number>("Descent", descend);
pFontDesc->SetNewFor<CPDF_Number>("StemV", stemV);
return pFontDesc;
}
} // namespace
CPDF_Document::CPDF_Document(std::unique_ptr<CPDF_Parser> pParser)
: CPDF_IndirectObjectHolder(),
m_pParser(std::move(pParser)),
m_pRootDict(nullptr),
m_pInfoDict(nullptr),
m_iNextPageToTraverse(0),
m_bReachedMaxPageLevel(false),
m_bLinearized(false),
m_iFirstPageNo(0),
m_dwFirstPageObjNum(0),
m_pDocPage(new CPDF_DocPageData(this)),
m_pDocRender(new CPDF_DocRenderData(this)) {
if (pParser)
SetLastObjNum(m_pParser->GetLastObjNum());
}
CPDF_Document::~CPDF_Document() {
delete m_pDocPage;
CPDF_ModuleMgr::Get()->GetPageModule()->ClearStockFont(this);
}
std::unique_ptr<CPDF_Object> CPDF_Document::ParseIndirectObject(
uint32_t objnum) {
return m_pParser ? m_pParser->ParseIndirectObject(this, objnum) : nullptr;
}
void CPDF_Document::LoadDocInternal() {
SetLastObjNum(m_pParser->GetLastObjNum());
CPDF_Object* pRootObj = GetOrParseIndirectObject(m_pParser->GetRootObjNum());
if (!pRootObj)
return;
m_pRootDict = pRootObj->GetDict();
if (!m_pRootDict)
return;
CPDF_Object* pInfoObj = GetOrParseIndirectObject(m_pParser->GetInfoObjNum());
if (pInfoObj)
m_pInfoDict = pInfoObj->GetDict();
}
void CPDF_Document::LoadDoc() {
LoadDocInternal();
LoadPages();
}
void CPDF_Document::LoadLinearizedDoc(
const CPDF_LinearizedHeader* pLinearizationParams) {
m_bLinearized = true;
LoadDocInternal();
m_PageList.resize(pLinearizationParams->GetPageCount());
m_iFirstPageNo = pLinearizationParams->GetFirstPageNo();
m_dwFirstPageObjNum = pLinearizationParams->GetFirstPageObjNum();
}
void CPDF_Document::LoadPages() {
m_PageList.resize(RetrievePageCount());
}
CPDF_Dictionary* CPDF_Document::TraversePDFPages(int iPage,
int* nPagesToGo,
size_t level) {
if (*nPagesToGo < 0 || m_bReachedMaxPageLevel)
return nullptr;
CPDF_Dictionary* pPages = m_pTreeTraversal[level].first;
CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
if (!pKidList) {
if (*nPagesToGo != 1)
return nullptr;
m_PageList[iPage] = pPages->GetObjNum();
return pPages;
}
if (level >= FX_MAX_PAGE_LEVEL) {
m_pTreeTraversal.pop_back();
m_bReachedMaxPageLevel = true;
return nullptr;
}
CPDF_Dictionary* page = nullptr;
for (size_t i = m_pTreeTraversal[level].second; i < pKidList->GetCount();
i++) {
if (*nPagesToGo == 0)
break;
CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
if (!pKid) {
(*nPagesToGo)--;
m_pTreeTraversal[level].second++;
continue;
}
if (pKid == pPages) {
m_pTreeTraversal[level].second++;
continue;
}
if (!pKid->KeyExist("Kids")) {
m_PageList[iPage - (*nPagesToGo) + 1] = pKid->GetObjNum();
(*nPagesToGo)--;
m_pTreeTraversal[level].second++;
if (*nPagesToGo == 0) {
page = pKid;
break;
}
} else {
// If the vector has size level+1, the child is not in yet
if (m_pTreeTraversal.size() == level + 1)
m_pTreeTraversal.push_back(std::make_pair(pKid, 0));
// Now m_pTreeTraversal[level+1] should exist and be equal to pKid.
CPDF_Dictionary* pageKid = TraversePDFPages(iPage, nPagesToGo, level + 1);
// Check if child was completely processed, i.e. it popped itself out
if (m_pTreeTraversal.size() == level + 1)
m_pTreeTraversal[level].second++;
// If child did not finish, no pages to go, or max level reached, end
if (m_pTreeTraversal.size() != level + 1 || *nPagesToGo == 0 ||
m_bReachedMaxPageLevel) {
page = pageKid;
break;
}
}
}
if (m_pTreeTraversal[level].second == pKidList->GetCount())
m_pTreeTraversal.pop_back();
return page;
}
void CPDF_Document::ResetTraversal() {
m_iNextPageToTraverse = 0;
m_bReachedMaxPageLevel = false;
m_pTreeTraversal.clear();
}
CPDF_Dictionary* CPDF_Document::GetPagesDict() const {
CPDF_Dictionary* pRoot = GetRoot();
return pRoot ? pRoot->GetDictFor("Pages") : nullptr;
}
bool CPDF_Document::IsPageLoaded(int iPage) const {
return !!m_PageList[iPage];
}
CPDF_Dictionary* CPDF_Document::GetPage(int iPage) {
if (iPage < 0 || iPage >= pdfium::CollectionSize<int>(m_PageList))
return nullptr;
if (m_bLinearized && (iPage == m_iFirstPageNo)) {
if (CPDF_Dictionary* pDict =
ToDictionary(GetOrParseIndirectObject(m_dwFirstPageObjNum))) {
return pDict;
}
}
uint32_t objnum = m_PageList[iPage];
if (objnum)
return ToDictionary(GetOrParseIndirectObject(objnum));
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
return nullptr;
if (iPage - m_iNextPageToTraverse + 1 <= 0) {
// This can happen when the page does not have an object number. On repeated
// calls to this function for the same page index, this condition causes
// TraversePDFPages() to incorrectly return nullptr.
// Example "testing/corpus/fx/other/jetman_std.pdf"
// We should restart traversing in this case.
// TODO(art-snake): optimize this.
ResetTraversal();
}
int nPagesToGo = iPage - m_iNextPageToTraverse + 1;
if (m_pTreeTraversal.empty())
m_pTreeTraversal.push_back(std::make_pair(pPages, 0));
CPDF_Dictionary* pPage = TraversePDFPages(iPage, &nPagesToGo, 0);
m_iNextPageToTraverse = iPage + 1;
return pPage;
}
void CPDF_Document::SetPageObjNum(int iPage, uint32_t objNum) {
m_PageList[iPage] = objNum;
}
int CPDF_Document::FindPageIndex(CPDF_Dictionary* pNode,
uint32_t* skip_count,
uint32_t objnum,
int* index,
int level) {
if (!pNode->KeyExist("Kids")) {
if (objnum == pNode->GetObjNum())
return *index;
if (*skip_count)
(*skip_count)--;
(*index)++;
return -1;
}
CPDF_Array* pKidList = pNode->GetArrayFor("Kids");
if (!pKidList)
return -1;
if (level >= FX_MAX_PAGE_LEVEL)
return -1;
size_t count = pNode->GetIntegerFor("Count");
if (count <= *skip_count) {
(*skip_count) -= count;
(*index) += count;
return -1;
}
if (count && count == pKidList->GetCount()) {
for (size_t i = 0; i < count; i++) {
CPDF_Reference* pKid = ToReference(pKidList->GetObjectAt(i));
if (pKid && pKid->GetRefObjNum() == objnum)
return static_cast<int>(*index + i);
}
}
for (size_t i = 0; i < pKidList->GetCount(); i++) {
CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
if (!pKid || pKid == pNode)
continue;
int found_index = FindPageIndex(pKid, skip_count, objnum, index, level + 1);
if (found_index >= 0)
return found_index;
}
return -1;
}
int CPDF_Document::GetPageIndex(uint32_t objnum) {
uint32_t nPages = m_PageList.size();
uint32_t skip_count = 0;
bool bSkipped = false;
for (uint32_t i = 0; i < nPages; i++) {
if (m_PageList[i] == objnum)
return i;
if (!bSkipped && m_PageList[i] == 0) {
skip_count = i;
bSkipped = true;
}
}
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
return -1;
int start_index = 0;
int found_index = FindPageIndex(pPages, &skip_count, objnum, &start_index);
// Corrupt page tree may yield out-of-range results.
if (found_index < 0 || found_index >= pdfium::CollectionSize<int>(m_PageList))
return -1;
m_PageList[found_index] = objnum;
return found_index;
}
int CPDF_Document::GetPageCount() const {
return pdfium::CollectionSize<int>(m_PageList);
}
int CPDF_Document::RetrievePageCount() const {
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
return 0;
if (!pPages->KeyExist("Kids"))
return 1;
std::set<CPDF_Dictionary*> visited_pages;
visited_pages.insert(pPages);
return CountPages(pPages, &visited_pages);
}
uint32_t CPDF_Document::GetUserPermissions() const {
// https://bugs.chromium.org/p/pdfium/issues/detail?id=499
if (!m_pParser) {
#ifndef PDF_ENABLE_XFA
return 0;
#else // PDF_ENABLE_XFA
return 0xFFFFFFFF;
#endif
}
return m_pParser->GetPermissions();
}
CPDF_Font* CPDF_Document::LoadFont(CPDF_Dictionary* pFontDict) {
ASSERT(pFontDict);
return m_pDocPage->GetFont(pFontDict);
}
CPDF_StreamAcc* CPDF_Document::LoadFontFile(CPDF_Stream* pStream) {
return m_pDocPage->GetFontFileStreamAcc(pStream);
}
CPDF_ColorSpace* CPDF_Document::LoadColorSpace(CPDF_Object* pCSObj,
CPDF_Dictionary* pResources) {
return m_pDocPage->GetColorSpace(pCSObj, pResources);
}
CPDF_Pattern* CPDF_Document::LoadPattern(CPDF_Object* pPatternObj,
bool bShading,
const CFX_Matrix& matrix) {
return m_pDocPage->GetPattern(pPatternObj, bShading, matrix);
}
CPDF_IccProfile* CPDF_Document::LoadIccProfile(CPDF_Stream* pStream) {
return m_pDocPage->GetIccProfile(pStream);
}
CPDF_Image* CPDF_Document::LoadImageFromPageData(uint32_t dwStreamObjNum) {
ASSERT(dwStreamObjNum);
return m_pDocPage->GetImage(dwStreamObjNum);
}
void CPDF_Document::CreateNewDoc() {
ASSERT(!m_pRootDict && !m_pInfoDict);
m_pRootDict = NewIndirect<CPDF_Dictionary>();
m_pRootDict->SetNewFor<CPDF_Name>("Type", "Catalog");
CPDF_Dictionary* pPages = NewIndirect<CPDF_Dictionary>();
pPages->SetNewFor<CPDF_Name>("Type", "Pages");
pPages->SetNewFor<CPDF_Number>("Count", 0);
pPages->SetNewFor<CPDF_Array>("Kids");
m_pRootDict->SetNewFor<CPDF_Reference>("Pages", this, pPages->GetObjNum());
m_pInfoDict = NewIndirect<CPDF_Dictionary>();
}
CPDF_Dictionary* CPDF_Document::CreateNewPage(int iPage) {
CPDF_Dictionary* pDict = NewIndirect<CPDF_Dictionary>();
pDict->SetNewFor<CPDF_Name>("Type", "Page");
uint32_t dwObjNum = pDict->GetObjNum();
if (!InsertNewPage(iPage, pDict)) {
DeleteIndirectObject(dwObjNum);
return nullptr;
}
return pDict;
}
bool CPDF_Document::InsertDeletePDFPage(CPDF_Dictionary* pPages,
int nPagesToGo,
CPDF_Dictionary* pPageDict,
bool bInsert,
std::set<CPDF_Dictionary*>* pVisited) {
CPDF_Array* pKidList = pPages->GetArrayFor("Kids");
if (!pKidList)
return false;
for (size_t i = 0; i < pKidList->GetCount(); i++) {
CPDF_Dictionary* pKid = pKidList->GetDictAt(i);
if (pKid->GetStringFor("Type") == "Page") {
if (nPagesToGo != 0) {
nPagesToGo--;
continue;
}
if (bInsert) {
pKidList->InsertNewAt<CPDF_Reference>(i, this, pPageDict->GetObjNum());
pPageDict->SetNewFor<CPDF_Reference>("Parent", this,
pPages->GetObjNum());
} else {
pKidList->RemoveAt(i);
}
pPages->SetNewFor<CPDF_Number>(
"Count", pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
ResetTraversal();
break;
}
int nPages = pKid->GetIntegerFor("Count");
if (nPagesToGo >= nPages) {
nPagesToGo -= nPages;
continue;
}
if (pdfium::ContainsKey(*pVisited, pKid))
return false;
pdfium::ScopedSetInsertion<CPDF_Dictionary*> insertion(pVisited, pKid);
if (!InsertDeletePDFPage(pKid, nPagesToGo, pPageDict, bInsert, pVisited))
return false;
pPages->SetNewFor<CPDF_Number>(
"Count", pPages->GetIntegerFor("Count") + (bInsert ? 1 : -1));
break;
}
return true;
}
bool CPDF_Document::InsertNewPage(int iPage, CPDF_Dictionary* pPageDict) {
CPDF_Dictionary* pRoot = GetRoot();
CPDF_Dictionary* pPages = pRoot ? pRoot->GetDictFor("Pages") : nullptr;
if (!pPages)
return false;
int nPages = GetPageCount();
if (iPage < 0 || iPage > nPages)
return false;
if (iPage == nPages) {
CPDF_Array* pPagesList = pPages->GetArrayFor("Kids");
if (!pPagesList)
pPagesList = pPages->SetNewFor<CPDF_Array>("Kids");
pPagesList->AddNew<CPDF_Reference>(this, pPageDict->GetObjNum());
pPages->SetNewFor<CPDF_Number>("Count", nPages + 1);
pPageDict->SetNewFor<CPDF_Reference>("Parent", this, pPages->GetObjNum());
ResetTraversal();
} else {
std::set<CPDF_Dictionary*> stack = {pPages};
if (!InsertDeletePDFPage(pPages, iPage, pPageDict, true, &stack))
return false;
}
m_PageList.insert(m_PageList.begin() + iPage, pPageDict->GetObjNum());
return true;
}
void CPDF_Document::DeletePage(int iPage) {
CPDF_Dictionary* pPages = GetPagesDict();
if (!pPages)
return;
int nPages = pPages->GetIntegerFor("Count");
if (iPage < 0 || iPage >= nPages)
return;
std::set<CPDF_Dictionary*> stack = {pPages};
if (!InsertDeletePDFPage(pPages, iPage, nullptr, false, &stack))
return;
m_PageList.erase(m_PageList.begin() + iPage);
}
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);
}
size_t CPDF_Document::CalculateEncodingDict(int charset,
CPDF_Dictionary* pBaseDict) {
size_t i;
for (i = 0; i < FX_ArraySize(g_FX_CharsetUnicodes); ++i) {
if (g_FX_CharsetUnicodes[i].m_Charset == charset)
break;
}
if (i == FX_ArraySize(g_FX_CharsetUnicodes))
return i;
CPDF_Dictionary* pEncodingDict = NewIndirect<CPDF_Dictionary>();
pEncodingDict->SetNewFor<CPDF_Name>("BaseEncoding", "WinAnsiEncoding");
CPDF_Array* pArray = pEncodingDict->SetNewFor<CPDF_Array>("Differences");
pArray->AddNew<CPDF_Number>(128);
const uint16_t* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
for (int j = 0; j < 128; j++) {
CFX_ByteString name = PDF_AdobeNameFromUnicode(pUnicodes[j]);
pArray->AddNew<CPDF_Name>(name.IsEmpty() ? ".notdef" : name);
}
pBaseDict->SetNewFor<CPDF_Reference>("Encoding", this,
pEncodingDict->GetObjNum());
return i;
}
CPDF_Dictionary* CPDF_Document::ProcessbCJK(
CPDF_Dictionary* pBaseDict,
int charset,
bool bVert,
CFX_ByteString basefont,
std::function<void(FX_WCHAR, FX_WCHAR, CPDF_Array*)> Insert) {
CPDF_Dictionary* pFontDict = NewIndirect<CPDF_Dictionary>();
CFX_ByteString cmap;
CFX_ByteString ordering;
int supplement = 0;
CPDF_Array* pWidthArray = pFontDict->SetNewFor<CPDF_Array>("W");
switch (charset) {
case FXFONT_CHINESEBIG5_CHARSET:
cmap = bVert ? "ETenms-B5-V" : "ETenms-B5-H";
ordering = "CNS1";
supplement = 4;
pWidthArray->AddNew<CPDF_Number>(1);
Insert(0x20, 0x7e, pWidthArray);
break;
case FXFONT_GB2312_CHARSET:
cmap = bVert ? "GBK-EUC-V" : "GBK-EUC-H";
ordering = "GB1";
supplement = 2;
pWidthArray->AddNew<CPDF_Number>(7716);
Insert(0x20, 0x20, pWidthArray);
pWidthArray->AddNew<CPDF_Number>(814);
Insert(0x21, 0x7e, pWidthArray);
break;
case FXFONT_HANGUL_CHARSET:
cmap = bVert ? "KSCms-UHC-V" : "KSCms-UHC-H";
ordering = "Korea1";
supplement = 2;
pWidthArray->AddNew<CPDF_Number>(1);
Insert(0x20, 0x7e, pWidthArray);
break;
case FXFONT_SHIFTJIS_CHARSET:
cmap = bVert ? "90ms-RKSJ-V" : "90ms-RKSJ-H";
ordering = "Japan1";
supplement = 5;
pWidthArray->AddNew<CPDF_Number>(231);
Insert(0x20, 0x7d, pWidthArray);
pWidthArray->AddNew<CPDF_Number>(326);
Insert(0xa0, 0xa0, pWidthArray);
pWidthArray->AddNew<CPDF_Number>(327);
Insert(0xa1, 0xdf, pWidthArray);
pWidthArray->AddNew<CPDF_Number>(631);
Insert(0x7e, 0x7e, pWidthArray);
break;
}
pBaseDict->SetNewFor<CPDF_Name>("Subtype", "Type0");
pBaseDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
pBaseDict->SetNewFor<CPDF_Name>("Encoding", cmap);
pFontDict->SetNewFor<CPDF_Name>("Type", "Font");
pFontDict->SetNewFor<CPDF_Name>("Subtype", "CIDFontType2");
pFontDict->SetNewFor<CPDF_Name>("BaseFont", basefont);
CPDF_Dictionary* pCIDSysInfo =
pFontDict->SetNewFor<CPDF_Dictionary>("CIDSystemInfo");
pCIDSysInfo->SetNewFor<CPDF_String>("Registry", "Adobe", false);
pCIDSysInfo->SetNewFor<CPDF_String>("Ordering", ordering, false);
pCIDSysInfo->SetNewFor<CPDF_Number>("Supplement", supplement);
CPDF_Array* pArray = pBaseDict->SetNewFor<CPDF_Array>("DescendantFonts");
pArray->AddNew<CPDF_Reference>(this, pFontDict->GetObjNum());
return pFontDict;
}
CPDF_Font* CPDF_Document::AddFont(CFX_Font* pFont, int charset, bool bVert) {
if (!pFont)
return nullptr;
bool bCJK = charset == FXFONT_CHINESEBIG5_CHARSET ||
charset == FXFONT_GB2312_CHARSET ||
charset == FXFONT_HANGUL_CHARSET ||
charset == FXFONT_SHIFTJIS_CHARSET;
CFX_ByteString basefont = pFont->GetFamilyName();
basefont.Replace(" ", "");
int flags =
CalculateFlags(pFont->IsBold(), pFont->IsItalic(), pFont->IsFixedWidth(),
false, false, charset == FXFONT_SYMBOL_CHARSET);
CPDF_Dictionary* pBaseDict = NewIndirect<CPDF_Dictionary>();
pBaseDict->SetNewFor<CPDF_Name>("Type", "Font");
std::unique_ptr<CFX_UnicodeEncoding> pEncoding(
new CFX_UnicodeEncoding(pFont));
CPDF_Dictionary* pFontDict = pBaseDict;
if (!bCJK) {
auto pWidths = pdfium::MakeUnique<CPDF_Array>();
for (int charcode = 32; charcode < 128; charcode++) {
int glyph_index = pEncoding->GlyphFromCharCode(charcode);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AddNew<CPDF_Number>(char_width);
}
if (charset == FXFONT_ANSI_CHARSET || charset == FXFONT_DEFAULT_CHARSET ||
charset == FXFONT_SYMBOL_CHARSET) {
pBaseDict->SetNewFor<CPDF_Name>("Encoding", "WinAnsiEncoding");
for (int charcode = 128; charcode <= 255; charcode++) {
int glyph_index = pEncoding->GlyphFromCharCode(charcode);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AddNew<CPDF_Number>(char_width);
}
} else {
size_t i = CalculateEncodingDict(charset, pBaseDict);
if (i < FX_ArraySize(g_FX_CharsetUnicodes)) {
const uint16_t* pUnicodes = g_FX_CharsetUnicodes[i].m_pUnicodes;
for (int j = 0; j < 128; j++) {
int glyph_index = pEncoding->GlyphFromCharCode(pUnicodes[j]);
int char_width = pFont->GetGlyphWidth(glyph_index);
pWidths->AddNew<CPDF_Number>(char_width);
}
}
}
ProcessNonbCJK(pBaseDict, pFont->IsBold(), pFont->IsItalic(), basefont,
std::move(pWidths));
} else {
pFontDict = ProcessbCJK(pBaseDict, charset, bVert, basefont,
[pFont, &pEncoding](FX_WCHAR start, FX_WCHAR end,
CPDF_Array* widthArr) {
InsertWidthArray1(pFont, pEncoding.get(), start,
end, widthArr);
});
}
int italicangle =
pFont->GetSubstFont() ? pFont->GetSubstFont()->m_ItalicAngle : 0;
FX_RECT bbox;
pFont->GetBBox(bbox);
auto pBBox = pdfium::MakeUnique<CPDF_Array>();
pBBox->AddNew<CPDF_Number>(bbox.left);
pBBox->AddNew<CPDF_Number>(bbox.bottom);
pBBox->AddNew<CPDF_Number>(bbox.right);
pBBox->AddNew<CPDF_Number>(bbox.top);
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 = FX_ArraySize(stem_chars);
uint32_t 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;
}
}
CPDF_Dictionary* pFontDesc = ToDictionary(AddIndirectObject(
CalculateFontDesc(this, basefont, flags, italicangle, pFont->GetAscent(),
pFont->GetDescent(), std::move(pBBox), nStemV)));
pFontDict->SetNewFor<CPDF_Reference>("FontDescriptor", this,
pFontDesc->GetObjNum());
return LoadFont(pBaseDict);
}
#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTW* pLogFont,
bool bVert,
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 nullptr;
FXSYS_strcpy(lfa.lfFaceName, face.c_str());
return AddWindowsFont(&lfa, bVert, bTranslateName);
}
CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTA* pLogFont,
bool bVert,
bool bTranslateName) {
pLogFont->lfHeight = -1000;
pLogFont->lfWidth = 0;
HGDIOBJ hFont = CreateFontIndirectA(pLogFont);
HDC hDC = CreateCompatibleDC(nullptr);
hFont = SelectObject(hDC, hFont);
int tm_size = GetOutlineTextMetrics(hDC, 0, nullptr);
if (tm_size == 0) {
hFont = SelectObject(hDC, hFont);
DeleteObject(hFont);
DeleteDC(hDC);
return nullptr;
}
LPBYTE tm_buf = FX_Alloc(BYTE, tm_size);
OUTLINETEXTMETRIC* ptm = reinterpret_cast<OUTLINETEXTMETRIC*>(tm_buf);
GetOutlineTextMetrics(hDC, tm_size, ptm);
int flags = CalculateFlags(false, pLogFont->lfItalic != 0,
(pLogFont->lfPitchAndFamily & 3) == FIXED_PITCH,
(pLogFont->lfPitchAndFamily & 0xf8) == FF_ROMAN,
(pLogFont->lfPitchAndFamily & 0xf8) == FF_SCRIPT,
pLogFont->lfCharSet == FXFONT_SYMBOL_CHARSET);
bool bCJK = pLogFont->lfCharSet == FXFONT_CHINESEBIG5_CHARSET ||
pLogFont->lfCharSet == FXFONT_GB2312_CHARSET ||
pLogFont->lfCharSet == FXFONT_HANGUL_CHARSET ||
pLogFont->lfCharSet == FXFONT_SHIFTJIS_CHARSET;
CFX_ByteString basefont;
if (bTranslateName && bCJK)
basefont = FPDF_GetPSNameFromTT(hDC);
if (basefont.IsEmpty())
basefont = pLogFont->lfFaceName;
int italicangle = ptm->otmItalicAngle / 10;
int ascend = ptm->otmrcFontBox.top;
int descend = ptm->otmrcFontBox.bottom;
int capheight = ptm->otmsCapEmHeight;
int bbox[4] = {ptm->otmrcFontBox.left, ptm->otmrcFontBox.bottom,
ptm->otmrcFontBox.right, ptm->otmrcFontBox.top};
FX_Free(tm_buf);
basefont.Replace(" ", "");
CPDF_Dictionary* pBaseDict = NewIndirect<CPDF_Dictionary>();
pBaseDict->SetNewFor<CPDF_Name>("Type", "Font");
CPDF_Dictionary* pFontDict = pBaseDict;
if (!bCJK) {
if (pLogFont->lfCharSet == FXFONT_ANSI_CHARSET ||
pLogFont->lfCharSet == FXFONT_DEFAULT_CHARSET ||
pLogFont->lfCharSet == FXFONT_SYMBOL_CHARSET) {
pBaseDict->SetNewFor<CPDF_Name>("Encoding", "WinAnsiEncoding");
} else {
CalculateEncodingDict(pLogFont->lfCharSet, pBaseDict);
}
int char_widths[224];
GetCharWidth(hDC, 32, 255, char_widths);
auto pWidths = pdfium::MakeUnique<CPDF_Array>();
for (size_t i = 0; i < 224; i++)
pWidths->AddNew<CPDF_Number>(char_widths[i]);
ProcessNonbCJK(pBaseDict, pLogFont->lfWeight > FW_MEDIUM,
pLogFont->lfItalic != 0, basefont, std::move(pWidths));
} else {
pFontDict =
ProcessbCJK(pBaseDict, pLogFont->lfCharSet, bVert, basefont,
[&hDC](FX_WCHAR start, FX_WCHAR end, CPDF_Array* widthArr) {
InsertWidthArray(hDC, start, end, widthArr);
});
}
auto pBBox = pdfium::MakeUnique<CPDF_Array>();
for (int i = 0; i < 4; i++)
pBBox->AddNew<CPDF_Number>(bbox[i]);
std::unique_ptr<CPDF_Dictionary> pFontDesc =
CalculateFontDesc(this, basefont, flags, italicangle, ascend, descend,
std::move(pBBox), pLogFont->lfWeight / 5);
pFontDesc->SetNewFor<CPDF_Number>("CapHeight", capheight);
pFontDict->SetNewFor<CPDF_Reference>(
"FontDescriptor", this,
AddIndirectObject(std::move(pFontDesc))->GetObjNum());
hFont = SelectObject(hDC, hFont);
DeleteObject(hFont);
DeleteDC(hDC);
return LoadFont(pBaseDict);
}
#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_