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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
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** $QT_END_LICENSE$
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****************************************************************************/
#include <qdebug.h>
#include "qfontsubset_p.h"
#include <qendian.h>
#include <qpainterpath.h>
#include "private/qpdf_p.h"
#include "private/qfunctions_p.h"
#ifdef Q_WS_X11
#include "private/qfontengine_x11_p.h"
#endif
#ifndef QT_NO_FREETYPE
#if defined(Q_WS_X11) || defined(Q_WS_QWS)
# include "private/qfontengine_ft_p.h"
#endif
#include <ft2build.h>
#include FT_FREETYPE_H
#endif
#ifndef QT_NO_PRINTER
QT_BEGIN_NAMESPACE
static const char * const agl =
".notdef\0space\0exclam\0quotedbl\0numbersign\0dollar\0percent\0ampersand\0"
"quotesingle\0parenleft\0parenright\0asterisk\0plus\0comma\0hyphen\0period\0"
"slash\0zero\0one\0two\0three\0four\0five\0six\0seven\0eight\0nine\0colon\0"
"semicolon\0less\0equal\0greater\0question\0at\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0"
"K\0L\0M\0N\0O\0P\0Q\0R\0S\0T\0U\0V\0W\0X\0Y\0Z\0bracketleft\0backslash\0"
"bracketright\0asciicircum\0underscore\0grave\0a\0b\0c\0d\0e\0f\0g\0h\0i\0j\0"
"k\0l\0m\0n\0o\0p\0q\0r\0s\0t\0u\0v\0w\0x\0y\0z\0braceleft\0bar\0braceright\0"
"asciitilde\0space\0exclamdown\0cent\0sterling\0currency\0yen\0brokenbar\0"
"section\0dieresis\0copyright\0ordfeminine\0guillemotleft\0logicalnot\0"
"hyphen\0registered\0macron\0degree\0plusminus\0twosuperior\0threesuperior\0"
"acute\0mu\0paragraph\0periodcentered\0cedilla\0onesuperior\0ordmasculine\0"
"guillemotright\0onequarter\0onehalf\0threequarters\0questiondown\0Agrave\0"
"Aacute\0Acircumflex\0Atilde\0Adieresis\0Aring\0AE\0Ccedilla\0Egrave\0Eacute\0"
"Ecircumflex\0Edieresis\0Igrave\0Iacute\0Icircumflex\0Idieresis\0Eth\0Ntilde\0"
"Ograve\0Oacute\0Ocircumflex\0Otilde\0Odieresis\0multiply\0Oslash\0Ugrave\0"
"Uacute\0Ucircumflex\0Udieresis\0Yacute\0Thorn\0germandbls\0agrave\0aacute\0"
"acircumflex\0atilde\0adieresis\0aring\0ae\0ccedilla\0egrave\0eacute\0"
"ecircumflex\0edieresis\0igrave\0iacute\0icircumflex\0idieresis\0eth\0ntilde\0"
"ograve\0oacute\0ocircumflex\0otilde\0odieresis\0divide\0oslash\0ugrave\0"
"uacute\0ucircumflex\0udieresis\0yacute\0thorn\0ydieresis\0Amacron\0amacron\0"
"Abreve\0abreve\0Aogonek\0aogonek\0Cacute\0cacute\0Ccircumflex\0ccircumflex\0"
"Cdotaccent\0cdotaccent\0Ccaron\0ccaron\0Dcaron\0dcaron\0Dcroat\0dcroat\0"
"Emacron\0emacron\0Ebreve\0ebreve\0Edotaccent\0edotaccent\0Eogonek\0eogonek\0"
"Ecaron\0ecaron\0Gcircumflex\0gcircumflex\0Gbreve\0gbreve\0Gdotaccent\0"
"gdotaccent\0Gcommaaccent\0gcommaaccent\0Hcircumflex\0hcircumflex\0Hbar\0"
"hbar\0Itilde\0itilde\0Imacron\0imacron\0Ibreve\0ibreve\0Iogonek\0iogonek\0"
"Idotaccent\0dotlessi\0IJ\0ij\0Jcircumflex\0jcircumflex\0Kcommaaccent\0"
"kcommaaccent\0kgreenlandic\0Lacute\0lacute\0Lcommaaccent\0lcommaaccent\0"
"Lcaron\0lcaron\0Ldot\0ldot\0Lslash\0lslash\0Nacute\0nacute\0Ncommaaccent\0"
"ncommaaccent\0Ncaron\0ncaron\0napostrophe\0Eng\0eng\0Omacron\0omacron\0"
"Obreve\0obreve\0Ohungarumlaut\0ohungarumlaut\0OE\0oe\0Racute\0racute\0"
"Rcommaaccent\0rcommaaccent\0Rcaron\0rcaron\0Sacute\0sacute\0Scircumflex\0"
"scircumflex\0Scedilla\0scedilla\0Scaron\0scaron\0Tcaron\0tcaron\0Tbar\0tbar\0"
"Utilde\0utilde\0Umacron\0umacron\0Ubreve\0ubreve\0Uring\0uring\0"
"Uhungarumlaut\0uhungarumlaut\0Uogonek\0uogonek\0Wcircumflex\0wcircumflex\0"
"Ycircumflex\0ycircumflex\0Ydieresis\0Zacute\0zacute\0Zdotaccent\0zdotaccent\0"
"Zcaron\0zcaron\0longs\0florin\0Ohorn\0ohorn\0Uhorn\0uhorn\0Gcaron\0gcaron\0"
"Aringacute\0aringacute\0AEacute\0aeacute\0Oslashacute\0oslashacute\0"
"Scommaaccent\0scommaaccent\0Tcommaaccent\0tcommaaccent\0afii57929\0"
"afii64937\0circumflex\0caron\0breve\0dotaccent\0ring\0ogonek\0tilde\0"
"hungarumlaut\0gravecomb\0acutecomb\0tildecomb\0hookabovecomb\0dotbelowcomb\0"
"tonos\0dieresistonos\0Alphatonos\0anoteleia\0Epsilontonos\0Etatonos\0"
"Iotatonos\0Omicrontonos\0Upsilontonos\0Omegatonos\0iotadieresistonos\0Alpha\0"
"Beta\0Gamma\0Delta\0Epsilon\0Zeta\0Eta\0Theta\0Iota\0Kappa\0Lambda\0Mu\0Nu\0"
"Xi\0Omicron\0Pi\0Rho\0Sigma\0Tau\0Upsilon\0Phi\0Chi\0Psi\0Omega\0"
"Iotadieresis\0Upsilondieresis\0alphatonos\0epsilontonos\0etatonos\0"
"iotatonos\0upsilondieresistonos\0alpha\0beta\0gamma\0delta\0epsilon\0zeta\0"
"eta\0theta\0iota\0kappa\0lambda\0mu\0nu\0xi\0omicron\0pi\0rho\0sigma1\0"
"sigma\0tau\0upsilon\0phi\0chi\0psi\0omega\0iotadieresis\0upsilondieresis\0"
;
static const struct { quint16 u; quint16 index; } unicode_to_aglindex[] = {
{0x0000, 0}, {0x0020, 8}, {0x0021, 14}, {0x0022, 21},
{0x0023, 30}, {0x0024, 41}, {0x0025, 48}, {0x0026, 56},
{0x0027, 66}, {0x0028, 78}, {0x0029, 88}, {0x002A, 99},
{0x002B, 108}, {0x002C, 113}, {0x002D, 119}, {0x002E, 126},
{0x002F, 133}, {0x0030, 139}, {0x0031, 144}, {0x0032, 148},
{0x0033, 152}, {0x0034, 158}, {0x0035, 163}, {0x0036, 168},
{0x0037, 172}, {0x0038, 178}, {0x0039, 184}, {0x003A, 189},
{0x003B, 195}, {0x003C, 205}, {0x003D, 210}, {0x003E, 216},
{0x003F, 224}, {0x0040, 233}, {0x0041, 236}, {0x0042, 238},
{0x0043, 240}, {0x0044, 242}, {0x0045, 244}, {0x0046, 246},
{0x0047, 248}, {0x0048, 250}, {0x0049, 252}, {0x004A, 254},
{0x004B, 256}, {0x004C, 258}, {0x004D, 260}, {0x004E, 262},
{0x004F, 264}, {0x0050, 266}, {0x0051, 268}, {0x0052, 270},
{0x0053, 272}, {0x0054, 274}, {0x0055, 276}, {0x0056, 278},
{0x0057, 280}, {0x0058, 282}, {0x0059, 284}, {0x005A, 286},
{0x005B, 288}, {0x005C, 300}, {0x005D, 310}, {0x005E, 323},
{0x005F, 335}, {0x0060, 346}, {0x0061, 352}, {0x0062, 354},
{0x0063, 356}, {0x0064, 358}, {0x0065, 360}, {0x0066, 362},
{0x0067, 364}, {0x0068, 366}, {0x0069, 368}, {0x006A, 370},
{0x006B, 372}, {0x006C, 374}, {0x006D, 376}, {0x006E, 378},
{0x006F, 380}, {0x0070, 382}, {0x0071, 384}, {0x0072, 386},
{0x0073, 388}, {0x0074, 390}, {0x0075, 392}, {0x0076, 394},
{0x0077, 396}, {0x0078, 398}, {0x0079, 400}, {0x007A, 402},
{0x007B, 404}, {0x007C, 414}, {0x007D, 418}, {0x007E, 429},
{0x00A0, 440}, {0x00A1, 446}, {0x00A2, 457}, {0x00A3, 462},
{0x00A4, 471}, {0x00A5, 480}, {0x00A6, 484}, {0x00A7, 494},
{0x00A8, 502}, {0x00A9, 511}, {0x00AA, 521}, {0x00AB, 533},
{0x00AC, 547}, {0x00AD, 558}, {0x00AE, 565}, {0x00AF, 576},
{0x00B0, 583}, {0x00B1, 590}, {0x00B2, 600}, {0x00B3, 612},
{0x00B4, 626}, {0x00B5, 632}, {0x00B6, 635}, {0x00B7, 645},
{0x00B8, 660}, {0x00B9, 668}, {0x00BA, 680}, {0x00BB, 693},
{0x00BC, 708}, {0x00BD, 719}, {0x00BE, 727}, {0x00BF, 741},
{0x00C0, 754}, {0x00C1, 761}, {0x00C2, 768}, {0x00C3, 780},
{0x00C4, 787}, {0x00C5, 797}, {0x00C6, 803}, {0x00C7, 806},
{0x00C8, 815}, {0x00C9, 822}, {0x00CA, 829}, {0x00CB, 841},
{0x00CC, 851}, {0x00CD, 858}, {0x00CE, 865}, {0x00CF, 877},
{0x00D0, 887}, {0x00D1, 891}, {0x00D2, 898}, {0x00D3, 905},
{0x00D4, 912}, {0x00D5, 924}, {0x00D6, 931}, {0x00D7, 941},
{0x00D8, 950}, {0x00D9, 957}, {0x00DA, 964}, {0x00DB, 971},
{0x00DC, 983}, {0x00DD, 993}, {0x00DE, 1000}, {0x00DF, 1006},
{0x00E0, 1017}, {0x00E1, 1024}, {0x00E2, 1031}, {0x00E3, 1043},
{0x00E4, 1050}, {0x00E5, 1060}, {0x00E6, 1066}, {0x00E7, 1069},
{0x00E8, 1078}, {0x00E9, 1085}, {0x00EA, 1092}, {0x00EB, 1104},
{0x00EC, 1114}, {0x00ED, 1121}, {0x00EE, 1128}, {0x00EF, 1140},
{0x00F0, 1150}, {0x00F1, 1154}, {0x00F2, 1161}, {0x00F3, 1168},
{0x00F4, 1175}, {0x00F5, 1187}, {0x00F6, 1194}, {0x00F7, 1204},
{0x00F8, 1211}, {0x00F9, 1218}, {0x00FA, 1225}, {0x00FB, 1232},
{0x00FC, 1244}, {0x00FD, 1254}, {0x00FE, 1261}, {0x00FF, 1267},
{0x0100, 1277}, {0x0101, 1285}, {0x0102, 1293}, {0x0103, 1300},
{0x0104, 1307}, {0x0105, 1315}, {0x0106, 1323}, {0x0107, 1330},
{0x0108, 1337}, {0x0109, 1349}, {0x010A, 1361}, {0x010B, 1372},
{0x010C, 1383}, {0x010D, 1390}, {0x010E, 1397}, {0x010F, 1404},
{0x0110, 1411}, {0x0111, 1418}, {0x0112, 1425}, {0x0113, 1433},
{0x0114, 1441}, {0x0115, 1448}, {0x0116, 1455}, {0x0117, 1466},
{0x0118, 1477}, {0x0119, 1485}, {0x011A, 1493}, {0x011B, 1500},
{0x011C, 1507}, {0x011D, 1519}, {0x011E, 1531}, {0x011F, 1538},
{0x0120, 1545}, {0x0121, 1556}, {0x0122, 1567}, {0x0123, 1580},
{0x0124, 1593}, {0x0125, 1605}, {0x0126, 1617}, {0x0127, 1622},
{0x0128, 1627}, {0x0129, 1634}, {0x012A, 1641}, {0x012B, 1649},
{0x012C, 1657}, {0x012D, 1664}, {0x012E, 1671}, {0x012F, 1679},
{0x0130, 1687}, {0x0131, 1698}, {0x0132, 1707}, {0x0133, 1710},
{0x0134, 1713}, {0x0135, 1725}, {0x0136, 1737}, {0x0137, 1750},
{0x0138, 1763}, {0x0139, 1776}, {0x013A, 1783}, {0x013B, 1790},
{0x013C, 1803}, {0x013D, 1816}, {0x013E, 1823}, {0x013F, 1830},
{0x0140, 1835}, {0x0141, 1840}, {0x0142, 1847}, {0x0143, 1854},
{0x0144, 1861}, {0x0145, 1868}, {0x0146, 1881}, {0x0147, 1894},
{0x0148, 1901}, {0x0149, 1908}, {0x014A, 1920}, {0x014B, 1924},
{0x014C, 1928}, {0x014D, 1936}, {0x014E, 1944}, {0x014F, 1951},
{0x0150, 1958}, {0x0151, 1972}, {0x0152, 1986}, {0x0153, 1989},
{0x0154, 1992}, {0x0155, 1999}, {0x0156, 2006}, {0x0157, 2019},
{0x0158, 2032}, {0x0159, 2039}, {0x015A, 2046}, {0x015B, 2053},
{0x015C, 2060}, {0x015D, 2072}, {0x015E, 2084}, {0x015F, 2093},
{0x0160, 2102}, {0x0161, 2109}, {0x0164, 2116}, {0x0165, 2123},
{0x0166, 2130}, {0x0167, 2135}, {0x0168, 2140}, {0x0169, 2147},
{0x016A, 2154}, {0x016B, 2162}, {0x016C, 2170}, {0x016D, 2177},
{0x016E, 2184}, {0x016F, 2190}, {0x0170, 2196}, {0x0171, 2210},
{0x0172, 2224}, {0x0173, 2232}, {0x0174, 2240}, {0x0175, 2252},
{0x0176, 2264}, {0x0177, 2276}, {0x0178, 2288}, {0x0179, 2298},
{0x017A, 2305}, {0x017B, 2312}, {0x017C, 2323}, {0x017D, 2334},
{0x017E, 2341}, {0x017F, 2348}, {0x0192, 2354}, {0x01A0, 2361},
{0x01A1, 2367}, {0x01AF, 2373}, {0x01B0, 2379}, {0x01E6, 2385},
{0x01E7, 2392}, {0x01FA, 2399}, {0x01FB, 2410}, {0x01FC, 2421},
{0x01FD, 2429}, {0x01FE, 2437}, {0x01FF, 2449}, {0x0218, 2461},
{0x0219, 2474}, {0x021A, 2487}, {0x021B, 2500}, {0x02BC, 2513},
{0x02BD, 2523}, {0x02C6, 2533}, {0x02C7, 2544}, {0x02D8, 2550},
{0x02D9, 2556}, {0x02DA, 2566}, {0x02DB, 2571}, {0x02DC, 2578},
{0x02DD, 2584}, {0x0300, 2597}, {0x0301, 2607}, {0x0303, 2617},
{0x0309, 2627}, {0x0323, 2641}, {0x0384, 2654}, {0x0385, 2660},
{0x0386, 2674}, {0x0387, 2685}, {0x0388, 2695}, {0x0389, 2708},
{0x038A, 2717}, {0x038C, 2727}, {0x038E, 2740}, {0x038F, 2753},
{0x0390, 2764}, {0x0391, 2782}, {0x0392, 2788}, {0x0393, 2793},
{0x0394, 2799}, {0x0395, 2805}, {0x0396, 2813}, {0x0397, 2818},
{0x0398, 2822}, {0x0399, 2828}, {0x039A, 2833}, {0x039B, 2839},
{0x039C, 2846}, {0x039D, 2849}, {0x039E, 2852}, {0x039F, 2855},
{0x03A0, 2863}, {0x03A1, 2866}, {0x03A3, 2870}, {0x03A4, 2876},
{0x03A5, 2880}, {0x03A6, 2888}, {0x03A7, 2892}, {0x03A8, 2896},
{0x03A9, 2900}, {0x03AA, 2906}, {0x03AB, 2919}, {0x03AC, 2935},
{0x03AD, 2946}, {0x03AE, 2959}, {0x03AF, 2968}, {0x03B0, 2978},
{0x03B1, 2999}, {0x03B2, 3005}, {0x03B3, 3010}, {0x03B4, 3016},
{0x03B5, 3022}, {0x03B6, 3030}, {0x03B7, 3035}, {0x03B8, 3039},
{0x03B9, 3045}, {0x03BA, 3050}, {0x03BB, 3056}, {0x03BC, 3063},
{0x03BD, 3066}, {0x03BE, 3069}, {0x03BF, 3072}, {0x03C0, 3080},
{0x03C1, 3083}, {0x03C2, 3087}, {0x03C3, 3094}, {0x03C4, 3100},
{0x03C5, 3104}, {0x03C6, 3112}, {0x03C7, 3116}, {0x03C8, 3120},
{0x03C9, 3124}, {0x03CA, 3130}, {0x03CB, 3143}, {0x03CC, 3159},
{0x03CD, 3172}, {0x03CE, 3185}, {0x03D1, 3196}, {0x03D2, 3203},
{0x03D5, 3212}, {0x03D6, 3217}, {0xFFFF, 3224}
};
// This map is used for symbol fonts to get the correct glyph names for the latin range
static const unsigned short symbol_map[0x100] = {
0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,
0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,
0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,
0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,
0x0020, 0x0021, 0x2200, 0x0023, 0x2203, 0x0025, 0x0026, 0x220b,
0x0028, 0x0029, 0x2217, 0x002b, 0x002c, 0x2212, 0x002e, 0x002f,
0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,
0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,
0x2245, 0x0391, 0x0392, 0x03a7, 0x0394, 0x0395, 0x03a6, 0x0393,
0x0397, 0x0399, 0x03d1, 0x039a, 0x039b, 0x039c, 0x039d, 0x039f,
0x03a0, 0x0398, 0x03a1, 0x03a3, 0x03a4, 0x03a5, 0x03c2, 0x03a9,
0x039e, 0x03a8, 0x0396, 0x005b, 0x2234, 0x005d, 0x22a5, 0x005f,
0xf8e5, 0x03b1, 0x03b2, 0x03c7, 0x03b4, 0x03b5, 0x03c6, 0x03b3,
0x03b7, 0x03b9, 0x03d5, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03bf,
0x03c0, 0x03b8, 0x03c1, 0x03c3, 0x03c4, 0x03c5, 0x03d6, 0x03c9,
0x03be, 0x03c8, 0x03b6, 0x007b, 0x007c, 0x007d, 0x223c, 0x007f,
0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,
0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,
0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,
0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,
0x20ac, 0x03d2, 0x2023, 0x2264, 0x2044, 0x221e, 0x0192, 0x2263,
0x2666, 0x2665, 0x2660, 0x2194, 0x2190, 0x2191, 0x2192, 0x2193,
0x00b0, 0x00b1, 0x2033, 0x2265, 0x00d7, 0x221d, 0x2202, 0x2022,
0x00f7, 0x2260, 0x2261, 0x2248, 0x2026, 0xf8e6, 0xf8e7, 0x21b5,
0x2135, 0x2111, 0x211c, 0x2118, 0x2297, 0x2295, 0x2205, 0x2229,
0x222a, 0x2283, 0x2287, 0x2284, 0x2282, 0x2286, 0x2208, 0x2209,
0x2220, 0x2207, 0xf6da, 0xf6d9, 0xf6db, 0x220f, 0x221a, 0x22c5,
0x00ac, 0x2227, 0x2228, 0x21d4, 0x21d0, 0x21d1, 0x21d2, 0x21d3,
0x25ca, 0x2329, 0xf8e8, 0xf8e9, 0xf8ea, 0x2211, 0xf8eb, 0xf8ec,
0xf8ed, 0xf8ee, 0xf8ef, 0xf8f0, 0xf8f1, 0xf8f2, 0xf8f3, 0xf8f4,
0x0000, 0x232a, 0x222b, 0x2320, 0xf8f5, 0x2321, 0xf8f6, 0xf8f7,
0xf8f8, 0xf8f9, 0xf8fa, 0xf8fb, 0xf8fc, 0xf8fd, 0xf8fe, 0x0000,
};
// ---------------------------- PS/PDF helper methods -----------------------------------
QByteArray QFontSubset::glyphName(unsigned short unicode, bool symbol)
{
if (symbol && unicode < 0x100)
// map from latin1 to symbol
unicode = symbol_map[unicode];
int l = 0;
while(unicode_to_aglindex[l].u < unicode)
l++;
if (unicode_to_aglindex[l].u == unicode)
return agl + unicode_to_aglindex[l].index;
char buffer[8];
buffer[0] = 'u';
buffer[1] = 'n';
buffer[2] = 'i';
QPdf::toHex(unicode, buffer+3);
return buffer;
}
#ifndef QT_NO_FREETYPE
static FT_Face ft_face(const QFontEngine *engine)
{
#ifdef Q_WS_X11
#ifndef QT_NO_FONTCONFIG
if (engine->type() == QFontEngine::Freetype) {
const QFontEngineFT *ft = static_cast<const QFontEngineFT *>(engine);
return ft->non_locked_face();
} else
#endif
if (engine->type() == QFontEngine::XLFD) {
const QFontEngineXLFD *xlfd = static_cast<const QFontEngineXLFD *>(engine);
return xlfd->non_locked_face();
}
#endif
#ifdef Q_WS_QWS
if (engine->type() == QFontEngine::Freetype) {
const QFontEngineFT *ft = static_cast<const QFontEngineFT *>(engine);
return ft->non_locked_face();
}
#endif
return 0;
}
#endif
QByteArray QFontSubset::glyphName(unsigned int glyph, const QVector<int> reverseMap) const
{
uint glyphIndex = glyph_indices[glyph];
if (glyphIndex == 0)
return "/.notdef";
QByteArray ba;
QPdf::ByteStream s(&ba);
#ifndef QT_NO_FREETYPE
FT_Face face = ft_face(fontEngine);
char name[32];
name[0] = 0;
if (face && FT_HAS_GLYPH_NAMES(face)) {
#if defined(Q_WS_X11)
if (fontEngine->type() == QFontEngine::XLFD)
glyphIndex = static_cast<QFontEngineXLFD *>(fontEngine)->glyphIndexToFreetypeGlyphIndex(glyphIndex);
#endif
FT_Get_Glyph_Name(face, glyphIndex, &name, 32);
if (name[0] == '.') // fix broken PS fonts returning .notdef for many glyphs
name[0] = 0;
}
if (name[0]) {
s << '/' << name;
} else
#endif
#if defined(Q_WS_X11)
if (fontEngine->type() == QFontEngine::XLFD) {
uint uc = static_cast<QFontEngineXLFD *>(fontEngine)->toUnicode(glyphIndex);
s << '/' << glyphName(uc, false /* ### */);
} else
#endif
if (reverseMap[glyphIndex] && reverseMap[glyphIndex] < 0x10000) {
s << '/' << glyphName(reverseMap[glyphIndex], false);
} else {
s << "/gl" << (int)glyphIndex;
}
return ba;
}
QByteArray QFontSubset::widthArray() const
{
Q_ASSERT(!widths.isEmpty());
QFontEngine::Properties properties = fontEngine->properties();
QByteArray width;
QPdf::ByteStream s(&width);
QFixed scale = QFixed(1000)/emSquare;
QFixed defWidth = widths[0];
//qDebug("defWidth=%d, scale=%f", defWidth.toInt(), scale.toReal());
for (int i = 0; i < nGlyphs(); ++i) {
if (defWidth != widths[i])
defWidth = 0;
}
if (defWidth > 0) {
s << "/DW " << (defWidth*scale).toInt();
} else {
s << "/W [";
for (int g = 0; g < nGlyphs();) {
QFixed w = widths[g];
int start = g;
int startLinear = 0;
++g;
while (g < nGlyphs()) {
QFixed nw = widths[g];
if (nw == w) {
if (!startLinear)
startLinear = g - 1;
} else {
if (startLinear > 0 && g - startLinear >= 10)
break;
startLinear = 0;
}
w = nw;
++g;
}
// qDebug("start=%x startLinear=%x g-1=%x",start,startLinear,g-1);
if (g - startLinear < 10)
startLinear = 0;
int endnonlinear = startLinear ? startLinear : g;
// qDebug(" startLinear=%x endnonlinear=%x", startLinear,endnonlinear);
if (endnonlinear > start) {
s << start << '[';
for (int i = start; i < endnonlinear; ++i)
s << (widths[i]*scale).toInt();
s << "]\n";
}
if (startLinear)
s << startLinear << g - 1 << (widths[startLinear]*scale).toInt() << '\n';
}
s << "]\n";
}
return width;
}
static void checkRanges(QPdf::ByteStream &ts, QByteArray &ranges, int &nranges)
{
if (++nranges > 100) {
ts << nranges << "beginbfrange\n"
<< ranges << "endbfrange\n";
ranges = QByteArray();
nranges = 0;
}
}
QVector<int> QFontSubset::getReverseMap() const
{
QVector<int> reverseMap;
reverseMap.resize(0x10000);
for (uint i = 0; i < 0x10000; ++i)
reverseMap[i] = 0;
QGlyphLayoutArray<10> glyphs;
for (uint uc = 0; uc < 0x10000; ++uc) {
QChar ch(uc);
int nglyphs = 10;
fontEngine->stringToCMap(&ch, 1, &glyphs, &nglyphs, QTextEngine::GlyphIndicesOnly);
int idx = glyph_indices.indexOf(glyphs.glyphs[0]);
if (idx >= 0 && !reverseMap.at(idx))
reverseMap[idx] = uc;
}
return reverseMap;
}
QByteArray QFontSubset::createToUnicodeMap() const
{
QVector<int> reverseMap = getReverseMap();
QByteArray touc;
QPdf::ByteStream ts(&touc);
ts << "/CIDInit /ProcSet findresource begin\n"
"12 dict begin\n"
"begincmap\n"
"/CIDSystemInfo << /Registry (Adobe) /Ordering (UCS) /Supplement 0 >> def\n"
"/CMapName /Adobe-Identity-UCS def\n"
"/CMapType 2 def\n"
"1 begincodespacerange\n"
"<0000> <FFFF>\n"
"endcodespacerange\n";
int nranges = 1;
QByteArray ranges = "<0000> <0000> <0000>\n";
QPdf::ByteStream s(&ranges);
char buf[5];
for (int g = 1; g < nGlyphs(); ) {
int uc0 = reverseMap.at(g);
if (!uc0) {
++g;
continue;
}
int start = g;
int startLinear = 0;
++g;
while (g < nGlyphs()) {
int uc = reverseMap[g];
// cmaps can't have the high byte changing within one range, so we need to break on that as well
if (!uc || (g>>8) != (start >> 8))
break;
if (uc == uc0 + 1) {
if (!startLinear)
startLinear = g - 1;
} else {
if (startLinear > 0 && g - startLinear >= 10)
break;
startLinear = 0;
}
uc0 = uc;
++g;
}
// qDebug("start=%x startLinear=%x g-1=%x",start,startLinear,g-1);
if (g - startLinear < 10)
startLinear = 0;
int endnonlinear = startLinear ? startLinear : g;
// qDebug(" startLinear=%x endnonlinear=%x", startLinear,endnonlinear);
if (endnonlinear > start) {
s << '<' << QPdf::toHex((ushort)start, buf) << "> <";
s << QPdf::toHex((ushort)(endnonlinear - 1), buf) << "> ";
if (endnonlinear == start + 1) {
s << '<' << QPdf::toHex((ushort)reverseMap[start], buf) << ">\n";
} else {
s << '[';
for (int i = start; i < endnonlinear; ++i) {
s << '<' << QPdf::toHex((ushort)reverseMap[i], buf) << "> ";
}
s << "]\n";
}
checkRanges(ts, ranges, nranges);
}
if (startLinear) {
while (startLinear < g) {
int len = g - startLinear;
int uc_start = reverseMap[startLinear];
int uc_end = uc_start + len - 1;
if ((uc_end >> 8) != (uc_start >> 8))
len = 256 - (uc_start & 0xff);
s << '<' << QPdf::toHex((ushort)startLinear, buf) << "> <";
s << QPdf::toHex((ushort)(startLinear + len - 1), buf) << "> ";
s << '<' << QPdf::toHex((ushort)reverseMap[startLinear], buf) << ">\n";
checkRanges(ts, ranges, nranges);
startLinear += len;
}
}
}
if (nranges) {
ts << nranges << "beginbfrange\n"
<< ranges << "endbfrange\n";
}
ts << "endcmap\n"
"CMapName currentdict /CMap defineresource pop\n"
"end\n"
"end\n";
return touc;
}
int QFontSubset::addGlyph(int index)
{
int idx = glyph_indices.indexOf(index);
if (idx < 0) {
idx = glyph_indices.size();
glyph_indices.append(index);
}
return idx;
}
// ------------------------------ Truetype generation ----------------------------------------------
typedef qint16 F2DOT14;
typedef quint32 Tag;
typedef quint16 GlyphID;
typedef quint16 Offset;
class QTtfStream {
public:
QTtfStream(QByteArray &ba) : data((uchar *)ba.data()) { start = data; }
QTtfStream &operator <<(quint8 v) { *data = v; ++data; return *this; }
QTtfStream &operator <<(quint16 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
QTtfStream &operator <<(quint32 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
QTtfStream &operator <<(qint8 v) { *data = quint8(v); ++data; return *this; }
QTtfStream &operator <<(qint16 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
QTtfStream &operator <<(qint32 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
QTtfStream &operator <<(qint64 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
int offset() const { return data - start; }
void setOffset(int o) { data = start + o; }
void align4() { while (offset() & 3) { *data = '\0'; ++data; } }
private:
uchar *data;
uchar *start;
};
struct QTtfTable {
Tag tag;
QByteArray data;
};
Q_DECLARE_TYPEINFO(QTtfTable, Q_MOVABLE_TYPE);
struct qttf_head_table {
qint32 font_revision;
quint16 flags;
qint64 created;
qint64 modified;
qint16 xMin;
qint16 yMin;
qint16 xMax;
qint16 yMax;
quint16 macStyle;
qint16 indexToLocFormat;
};
struct qttf_hhea_table {
qint16 ascender;
qint16 descender;
qint16 lineGap;
quint16 maxAdvanceWidth;
qint16 minLeftSideBearing;
qint16 minRightSideBearing;
qint16 xMaxExtent;
quint16 numberOfHMetrics;
};
struct qttf_maxp_table {
quint16 numGlyphs;
quint16 maxPoints;
quint16 maxContours;
quint16 maxCompositePoints;
quint16 maxCompositeContours;
quint16 maxComponentElements;
quint16 maxComponentDepth;
};
struct qttf_name_table {
QString copyright;
QString family;
QString subfamily;
QString postscript_name;
};
static QTtfTable generateHead(const qttf_head_table &head);
static QTtfTable generateHhea(const qttf_hhea_table &hhea);
static QTtfTable generateMaxp(const qttf_maxp_table &maxp);
static QTtfTable generateName(const qttf_name_table &name);
struct qttf_font_tables
{
qttf_head_table head;
qttf_hhea_table hhea;
qttf_maxp_table maxp;
};
struct QTtfGlyph {
quint16 index;
qint16 xMin;
qint16 xMax;
qint16 yMin;
qint16 yMax;
quint16 advanceWidth;
qint16 lsb;
quint16 numContours;
quint16 numPoints;
QByteArray data;
};
Q_DECLARE_TYPEINFO(QTtfGlyph, Q_MOVABLE_TYPE);
static QTtfGlyph generateGlyph(int index, const QPainterPath &path, qreal advance, qreal lsb, qreal ppem);
// generates glyf, loca and hmtx
static QList<QTtfTable> generateGlyphTables(qttf_font_tables &tables, const QList<QTtfGlyph> &_glyphs);
static QByteArray bindFont(const QList<QTtfTable>& _tables);
static quint32 checksum(const QByteArray &table)
{
quint32 sum = 0;
int offset = 0;
const uchar *d = (uchar *)table.constData();
while (offset <= table.size()-3) {
sum += qFromBigEndian<quint32>(d + offset);
offset += 4;
}
int shift = 24;
quint32 x = 0;
while (offset < table.size()) {
x |= ((quint32)d[offset]) << shift;
++offset;
shift -= 8;
}
sum += x;
return sum;
}
static QTtfTable generateHead(const qttf_head_table &head)
{
const int head_size = 54;
QTtfTable t;
t.tag = MAKE_TAG('h', 'e', 'a', 'd');
t.data.resize(head_size);
QTtfStream s(t.data);
// qint32 Table version number 0x00010000 for version 1.0.
// qint32 fontRevision Set by font manufacturer.
s << qint32(0x00010000)
<< head.font_revision
// quint32 checkSumAdjustment To compute: set it to 0, sum the entire font as quint32, then store 0xB1B0AFBA - sum.
<< quint32(0)
// quint32 magicNumber Set to 0x5F0F3CF5.
<< quint32(0x5F0F3CF5)
// quint16 flags Bit 0: Baseline for font at y=0;
// Bit 1: Left sidebearing point at x=0;
// Bit 2: Instructions may depend on point size;
// Bit 3: Force ppem to integer values for all internal scaler math; may use fractional ppem sizes if this bit is clear;
// Bit 4: Instructions may alter advance width (the advance widths might not scale linearly);
// Bits 5-10: These should be set according to Apple's specification . However, they are not implemented in OpenType.
// Bit 11: Font data is 'lossless,' as a result of having been compressed and decompressed with the Agfa MicroType Express engine.
// Bit 12: Font converted (produce compatible metrics)
// Bit 13: Font optimized for ClearType
// Bit 14: Reserved, set to 0
// Bit 15: Reserved, set to 0
<< quint16(0)
// quint16 unitsPerEm Valid range is from 16 to 16384. This value should be a power of 2 for fonts that have TrueType outlines.
<< quint16(2048)
// qint64 created Number of seconds since 12:00 midnight, January 1, 1904. 64-bit integer
<< head.created
// qint64 modified Number of seconds since 12:00 midnight, January 1, 1904. 64-bit integer
<< head.modified
// qint16 xMin For all glyph bounding boxes.
// qint16 yMin For all glyph bounding boxes.
// qint16 xMax For all glyph bounding boxes.
// qint16 yMax For all glyph bounding boxes.
<< head.xMin
<< head.yMin
<< head.xMax
<< head.yMax
// quint16 macStyle Bit 0: Bold (if set to 1);
// Bit 1: Italic (if set to 1)
// Bit 2: Underline (if set to 1)
// Bit 3: Outline (if set to 1)
// Bit 4: Shadow (if set to 1)
// Bit 5: Condensed (if set to 1)
// Bit 6: Extended (if set to 1)
// Bits 7-15: Reserved (set to 0).
<< head.macStyle
// quint16 lowestRecPPEM Smallest readable size in pixels.
<< quint16(6) // just a wild guess
// qint16 fontDirectionHint 0: Fully mixed directional glyphs;
<< qint16(0)
// 1: Only strongly left to right;
// 2: Like 1 but also contains neutrals;
// -1: Only strongly right to left;
// -2: Like -1 but also contains neutrals. 1
// qint16 indexToLocFormat 0 for short offsets, 1 for long.
<< head.indexToLocFormat
// qint16 glyphDataFormat 0 for current format.
<< qint16(0);
Q_ASSERT(s.offset() == head_size);
return t;
}
static QTtfTable generateHhea(const qttf_hhea_table &hhea)
{
const int hhea_size = 36;
QTtfTable t;
t.tag = MAKE_TAG('h', 'h', 'e', 'a');
t.data.resize(hhea_size);
QTtfStream s(t.data);
// qint32 Table version number 0x00010000 for version 1.0.
s << qint32(0x00010000)
// qint16 Ascender Typographic ascent. (Distance from baseline of highest ascender)
<< hhea.ascender
// qint16 Descender Typographic descent. (Distance from baseline of lowest descender)
<< hhea.descender
// qint16 LineGap Typographic line gap.
// Negative LineGap values are treated as zero
// in Windows 3.1, System 6, and
// System 7.
<< hhea.lineGap
// quint16 advanceWidthMax Maximum advance width value in 'hmtx' table.
<< hhea.maxAdvanceWidth
// qint16 minLeftSideBearing Minimum left sidebearing value in 'hmtx' table.
<< hhea.minLeftSideBearing
// qint16 minRightSideBearing Minimum right sidebearing value; calculated as Min(aw - lsb - (xMax - xMin)).
<< hhea.minRightSideBearing
// qint16 xMaxExtent Max(lsb + (xMax - xMin)).
<< hhea.xMaxExtent
// qint16 caretSlopeRise Used to calculate the slope of the cursor (rise/run); 1 for vertical.
<< qint16(1)
// qint16 caretSlopeRun 0 for vertical.
<< qint16(0)
// qint16 caretOffset The amount by which a slanted highlight on a glyph needs to be shifted to produce the best appearance. Set to 0 for non-slanted fonts
<< qint16(0)
// qint16 (reserved) set to 0
<< qint16(0)
// qint16 (reserved) set to 0
<< qint16(0)
// qint16 (reserved) set to 0
<< qint16(0)
// qint16 (reserved) set to 0
<< qint16(0)
// qint16 metricDataFormat 0 for current format.
<< qint16(0)
// quint16 numberOfHMetrics Number of hMetric entries in 'hmtx' table
<< hhea.numberOfHMetrics;
Q_ASSERT(s.offset() == hhea_size);
return t;
}
static QTtfTable generateMaxp(const qttf_maxp_table &maxp)
{
const int maxp_size = 32;
QTtfTable t;
t.tag = MAKE_TAG('m', 'a', 'x', 'p');
t.data.resize(maxp_size);
QTtfStream s(t.data);
// qint32 Table version number 0x00010000 for version 1.0.
s << qint32(0x00010000)
// quint16 numGlyphs The number of glyphs in the font.
<< maxp.numGlyphs
// quint16 maxPoints Maximum points in a non-composite glyph.
<< maxp.maxPoints
// quint16 maxContours Maximum contours in a non-composite glyph.
<< maxp.maxContours
// quint16 maxCompositePoints Maximum points in a composite glyph.
<< maxp.maxCompositePoints
// quint16 maxCompositeContours Maximum contours in a composite glyph.
<< maxp.maxCompositeContours
// quint16 maxZones 1 if instructions do not use the twilight zone (Z0), or 2 if instructions do use Z0; should be set to 2 in most cases.
<< quint16(1) // we do not embed instructions
// quint16 maxTwilightPoints Maximum points used in Z0.
<< quint16(0)
// quint16 maxStorage Number of Storage Area locations.
<< quint16(0)
// quint16 maxFunctionDefs Number of FDEFs.
<< quint16(0)
// quint16 maxInstructionDefs Number of IDEFs.
<< quint16(0)
// quint16 maxStackElements Maximum stack depth2.
<< quint16(0)
// quint16 maxSizeOfInstructions Maximum byte count for glyph instructions.
<< quint16(0)
// quint16 maxComponentElements Maximum number of components referenced at "top level" for any composite glyph.
<< maxp.maxComponentElements
// quint16 maxComponentDepth Maximum levels of recursion; 1 for simple components.
<< maxp.maxComponentDepth;
Q_ASSERT(s.offset() == maxp_size);
return t;
}
struct QTtfNameRecord {
quint16 nameId;
QString value;
};
static QTtfTable generateName(const QList<QTtfNameRecord> &name);
static QTtfTable generateName(const qttf_name_table &name)
{
QList<QTtfNameRecord> list;
QTtfNameRecord rec;
rec.nameId = 0;
rec.value = name.copyright;
list.append(rec);
rec.nameId = 1;
rec.value = name.family;
list.append(rec);
rec.nameId = 2;
rec.value = name.subfamily;
list.append(rec);
rec.nameId = 4;
rec.value = name.family;
if (name.subfamily != QLatin1String("Regular"))
rec.value += QLatin1Char(' ') + name.subfamily;
list.append(rec);
rec.nameId = 6;
rec.value = name.postscript_name;
list.append(rec);
return generateName(list);
}
// ####### should probably generate Macintosh/Roman name entries as well
static QTtfTable generateName(const QList<QTtfNameRecord> &name)
{
const int char_size = 2;
QTtfTable t;
t.tag = MAKE_TAG('n', 'a', 'm', 'e');
const int name_size = 6 + 12*name.size();
int string_size = 0;
for (int i = 0; i < name.size(); ++i) {
string_size += name.at(i).value.length()*char_size;
}
t.data.resize(name_size + string_size);
QTtfStream s(t.data);
// quint16 format Format selector (=0).
s << quint16(0)
// quint16 count Number of name records.
<< quint16(name.size())
// quint16 stringOffset Offset to start of string storage (from start of table).
<< quint16(name_size);
// NameRecord nameRecord[count] The name records where count is the number of records.
// (Variable)
int off = 0;
for (int i = 0; i < name.size(); ++i) {
int len = name.at(i).value.length()*char_size;
// quint16 platformID Platform ID.
// quint16 encodingID Platform-specific encoding ID.
// quint16 languageID Language ID.
s << quint16(3)
<< quint16(1)
<< quint16(0x0409) // en_US
// quint16 nameId Name ID.
<< name.at(i).nameId
// quint16 length String length (in bytes).
<< quint16(len)
// quint16 offset String offset from start of storage area (in bytes).
<< quint16(off);
off += len;
}
for (int i = 0; i < name.size(); ++i) {
const QString &n = name.at(i).value;
const ushort *uc = n.utf16();
for (int i = 0; i < n.length(); ++i) {
s << quint16(*uc);
++uc;
}
}
return t;
}
enum Flags {
OffCurve = 0,
OnCurve = (1 << 0),
XShortVector = (1 << 1),
YShortVector = (1 << 2),
Repeat = (1 << 3),
XSame = (1 << 4),
XShortPositive = (1 << 4),
YSame = (1 << 5),
YShortPositive = (1 << 5)
};
struct TTF_POINT {
qint16 x;
qint16 y;
quint8 flags;
};
Q_DECLARE_TYPEINFO(TTF_POINT, Q_PRIMITIVE_TYPE);
static void convertPath(const QPainterPath &path, QList<TTF_POINT> *points, QList<int> *endPoints, qreal ppem)
{
int numElements = path.elementCount();
for (int i = 0; i < numElements - 1; ++i) {
const QPainterPath::Element &e = path.elementAt(i);
TTF_POINT p;
p.x = qRound(e.x * 2048. / ppem);
p.y = qRound(-e.y * 2048. / ppem);
p.flags = 0;
switch(e.type) {
case QPainterPath::MoveToElement:
if (i != 0) {
// see if start and end points of the last contour agree
int start = endPoints->size() ? endPoints->at(endPoints->size()-1) - 1 : 0;
int end = points->size() - 1;
if (points->at(end).x == points->at(start).x
&& points->at(end).y == points->at(start).y)
points->takeLast();
endPoints->append(points->size() - 1);
}
// fall through
case QPainterPath::LineToElement:
p.flags = OnCurve;
break;
case QPainterPath::CurveToElement: {
// cubic bezier curve, we need to reduce to a list of quadratic curves
TTF_POINT list[3*16 + 4]; // we need max 16 subdivisions
list[3] = points->at(points->size() - 1);
list[2] = p;
const QPainterPath::Element &e2 = path.elementAt(++i);
list[1].x = qRound(e2.x * 2048. / ppem);
list[1].y = qRound(-e2.y * 2048. / ppem);
const QPainterPath::Element &e3 = path.elementAt(++i);
list[0].x = qRound(e3.x * 2048. / ppem);
list[0].y = qRound(-e3.y * 2048. / ppem);
TTF_POINT *base = list;
bool try_reduce = points->size() > 1
&& points->at(points->size() - 1).flags == OnCurve
&& points->at(points->size() - 2).flags == OffCurve;
// qDebug("generating beziers:");
while (base >= list) {
const int split_limit = 3;
// {
// qDebug("iteration:");
// TTF_POINT *x = list;
// while (x <= base + 3) {
// qDebug() << " " << QPoint(x->x, x->y);
// ++x;
// }
// }
Q_ASSERT(base - list < 3*16 + 1);
// first see if we can easily reduce the cubic to a quadratic bezier curve
int i1_x = base[1].x + ((base[1].x - base[0].x) >> 1);
int i1_y = base[1].y + ((base[1].y - base[0].y) >> 1);
int i2_x = base[2].x + ((base[2].x - base[3].x) >> 1);
int i2_y = base[2].y + ((base[2].y - base[3].y) >> 1);
// qDebug() << "checking: i1=" << QPoint(i1_x, i1_y) << " i2=" << QPoint(i2_x, i2_y);
if (qAbs(i1_x - i2_x) <= split_limit && qAbs(i1_y - i2_y) <= split_limit) {
// got a quadratic bezier curve
TTF_POINT np;
np.x = (i1_x + i2_x) >> 1;
np.y = (i1_y + i2_y) >> 1;
if (try_reduce) {
// see if we can optimize out the last onCurve point
int mx = (points->at(points->size() - 2).x + base[2].x) >> 1;
int my = (points->at(points->size() - 2).y + base[2].y) >> 1;
if (qAbs(mx - base[3].x) <= split_limit && qAbs(my = base[3].y) <= split_limit)
points->takeLast();
try_reduce = false;
}
np.flags = OffCurve;
points->append(np);
// qDebug() << " appending offcurve point " << QPoint(np.x, np.y);
base -= 3;
} else {
// need to split
// qDebug() << " -> splitting";
qint16 a, b, c, d;
base[6].x = base[3].x;
c = base[1].x;
d = base[2].x;
base[1].x = a = ( base[0].x + c ) >> 1;
base[5].x = b = ( base[3].x + d ) >> 1;
c = ( c + d ) >> 1;
base[2].x = a = ( a + c ) >> 1;
base[4].x = b = ( b + c ) >> 1;
base[3].x = ( a + b ) >> 1;
base[6].y = base[3].y;
c = base[1].y;
d = base[2].y;
base[1].y = a = ( base[0].y + c ) >> 1;
base[5].y = b = ( base[3].y + d ) >> 1;
c = ( c + d ) >> 1;
base[2].y = a = ( a + c ) >> 1;
base[4].y = b = ( b + c ) >> 1;
base[3].y = ( a + b ) >> 1;
base += 3;
}
}
p = list[0];
p.flags = OnCurve;
break;
}
case QPainterPath::CurveToDataElement:
Q_ASSERT(false);
break;
}
// qDebug() << " appending oncurve point " << QPoint(p.x, p.y);
points->append(p);
}
int start = endPoints->size() ? endPoints->at(endPoints->size()-1) + 1 : 0;
int end = points->size() - 1;
if (points->at(end).x == points->at(start).x
&& points->at(end).y == points->at(start).y)
points->takeLast();
endPoints->append(points->size() - 1);
}
static void getBounds(const QList<TTF_POINT> &points, qint16 *xmin, qint16 *xmax, qint16 *ymin, qint16 *ymax)
{
*xmin = points.at(0).x;
*xmax = *xmin;
*ymin = points.at(0).y;
*ymax = *ymin;
for (int i = 1; i < points.size(); ++i) {
*xmin = qMin(*xmin, points.at(i).x);
*xmax = qMax(*xmax, points.at(i).x);
*ymin = qMin(*ymin, points.at(i).y);
*ymax = qMax(*ymax, points.at(i).y);
}
}
static int convertToRelative(QList<TTF_POINT> *points)
{
// convert points to relative and setup flags
// qDebug() << "relative points:";
qint16 prev_x = 0;
qint16 prev_y = 0;
int point_array_size = 0;
for (int i = 0; i < points->size(); ++i) {
const int x = points->at(i).x;
const int y = points->at(i).y;
TTF_POINT rel;
rel.x = x - prev_x;
rel.y = y - prev_y;
rel.flags = points->at(i).flags;
Q_ASSERT(rel.flags < 2);
if (!rel.x) {
rel.flags |= XSame;
} else if (rel.x > 0 && rel.x < 256) {
rel.flags |= XShortVector|XShortPositive;
point_array_size++;
} else if (rel.x < 0 && rel.x > -256) {
rel.flags |= XShortVector;
rel.x = -rel.x;
point_array_size++;
} else {
point_array_size += 2;
}
if (!rel.y) {
rel.flags |= YSame;
} else if (rel.y > 0 && rel.y < 256) {
rel.flags |= YShortVector|YShortPositive;
point_array_size++;
} else if (rel.y < 0 && rel.y > -256) {
rel.flags |= YShortVector;
rel.y = -rel.y;
point_array_size++;
} else {
point_array_size += 2;
}
(*points)[i] = rel;
// #define toString(x) ((rel.flags & x) ? #x : "")
// qDebug() << " " << QPoint(rel.x, rel.y) << "flags="
// << toString(OnCurve) << toString(XShortVector)
// << (rel.flags & XShortVector ? toString(XShortPositive) : toString(XSame))
// << toString(YShortVector)
// << (rel.flags & YShortVector ? toString(YShortPositive) : toString(YSame));
prev_x = x;
prev_y = y;
}
return point_array_size;
}
static void getGlyphData(QTtfGlyph *glyph, const QList<TTF_POINT> &points, const QList<int> &endPoints, int point_array_size)
{
const int max_size = 5*sizeof(qint16) // header
+ endPoints.size()*sizeof(quint16) // end points of contours
+ sizeof(quint16) // instruction length == 0
+ points.size()*(1) // flags
+ point_array_size; // coordinates
glyph->data.resize(max_size);
QTtfStream s(glyph->data);
s << qint16(endPoints.size())
<< glyph->xMin << glyph->yMin << glyph->xMax << glyph->yMax;
for (int i = 0; i < endPoints.size(); ++i)
s << quint16(endPoints.at(i));
s << quint16(0); // instruction length
// emit flags
for (int i = 0; i < points.size(); ++i)
s << quint8(points.at(i).flags);
// emit points
for (int i = 0; i < points.size(); ++i) {
quint8 flags = points.at(i).flags;
qint16 x = points.at(i).x;
if (flags & XShortVector)
s << quint8(x);
else if (!(flags & XSame))
s << qint16(x);
}
for (int i = 0; i < points.size(); ++i) {
quint8 flags = points.at(i).flags;
qint16 y = points.at(i).y;
if (flags & YShortVector)
s << quint8(y);
else if (!(flags & YSame))
s << qint16(y);
}
// qDebug() << "offset=" << s.offset() << "max_size=" << max_size << "point_array_size=" << point_array_size;
Q_ASSERT(s.offset() == max_size);
glyph->numContours = endPoints.size();
glyph->numPoints = points.size();
}
static QTtfGlyph generateGlyph(int index, const QPainterPath &path, qreal advance, qreal lsb, qreal ppem)
{
QList<TTF_POINT> points;
QList<int> endPoints;
QTtfGlyph glyph;
glyph.index = index;
glyph.advanceWidth = qRound(advance * 2048. / ppem);
glyph.lsb = qRound(lsb * 2048. / ppem);
if (!path.elementCount()) {
//qDebug("glyph %d is empty", index);
lsb = 0;
glyph.xMin = glyph.xMax = glyph.yMin = glyph.yMax = 0;
glyph.numContours = 0;
glyph.numPoints = 0;
return glyph;
}
convertPath(path, &points, &endPoints, ppem);
// qDebug() << "number of contours=" << endPoints.size();
// for (int i = 0; i < points.size(); ++i)
// qDebug() << " point[" << i << "] = " << QPoint(points.at(i).x, points.at(i).y) << " flags=" << points.at(i).flags;
// qDebug() << "endPoints:";
// for (int i = 0; i < endPoints.size(); ++i)
// qDebug() << endPoints.at(i);
getBounds(points, &glyph.xMin, &glyph.xMax, &glyph.yMin, &glyph.yMax);
int point_array_size = convertToRelative(&points);
getGlyphData(&glyph, points, endPoints, point_array_size);
return glyph;
}
Q_STATIC_GLOBAL_OPERATOR bool operator <(const QTtfGlyph &g1, const QTtfGlyph &g2)
{
return g1.index < g2.index;
}
static QList<QTtfTable> generateGlyphTables(qttf_font_tables &tables, const QList<QTtfGlyph> &_glyphs)
{
const int max_size_small = 65536*2;
QList<QTtfGlyph> glyphs = _glyphs;
qSort(glyphs);
Q_ASSERT(tables.maxp.numGlyphs == glyphs.at(glyphs.size()-1).index + 1);
int nGlyphs = tables.maxp.numGlyphs;
int glyf_size = 0;
for (int i = 0; i < glyphs.size(); ++i)
glyf_size += (glyphs.at(i).data.size() + 3) & ~3;
tables.head.indexToLocFormat = glyf_size < max_size_small ? 0 : 1;
tables.hhea.numberOfHMetrics = nGlyphs;
QTtfTable glyf;
glyf.tag = MAKE_TAG('g', 'l', 'y', 'f');
QTtfTable loca;
loca.tag = MAKE_TAG('l', 'o', 'c', 'a');
loca.data.resize(glyf_size < max_size_small ? (nGlyphs+1)*sizeof(quint16) : (nGlyphs+1)*sizeof(quint32));
QTtfStream ls(loca.data);
QTtfTable hmtx;
hmtx.tag = MAKE_TAG('h', 'm', 't', 'x');
hmtx.data.resize(nGlyphs*4);
QTtfStream hs(hmtx.data);
int pos = 0;
for (int i = 0; i < nGlyphs; ++i) {
int gpos = glyf.data.size();
quint16 advance = 0;
qint16 lsb = 0;
if (glyphs[pos].index == i) {
// emit glyph
// qDebug("emitting glyph %d: size=%d", i, glyphs.at(i).data.size());
glyf.data += glyphs.at(pos).data;
while (glyf.data.size() & 1)
glyf.data.append('\0');
advance = glyphs.at(pos).advanceWidth;
lsb = glyphs.at(pos).lsb;
++pos;
}
if (glyf_size < max_size_small) {
// use short loca format
ls << quint16(gpos>>1);
} else {
// use long loca format
ls << quint32(gpos);
}
hs << advance
<< lsb;
}
if (glyf_size < max_size_small) {
// use short loca format
ls << quint16(glyf.data.size()>>1);
} else {
// use long loca format
ls << quint32(glyf.data.size());
}
Q_ASSERT(loca.data.size() == ls.offset());
Q_ASSERT(hmtx.data.size() == hs.offset());
QList<QTtfTable> list;
list.append(glyf);
list.append(loca);
list.append(hmtx);
return list;
}
Q_STATIC_GLOBAL_OPERATOR bool operator <(const QTtfTable &t1, const QTtfTable &t2)
{
return t1.tag < t2.tag;
}
static QByteArray bindFont(const QList<QTtfTable>& _tables)
{
QList<QTtfTable> tables = _tables;
qSort(tables);
QByteArray font;
const int header_size = sizeof(qint32) + 4*sizeof(quint16);
const int directory_size = 4*sizeof(quint32)*tables.size();
font.resize(header_size + directory_size);
int log2 = 0;
int pow = 1;
int n = tables.size() >> 1;
while (n) {
++log2;
pow <<= 1;
n >>= 1;
}
quint32 head_offset = 0;
{
QTtfStream f(font);
// Offset Table
// Type Name Description
// qint32 sfnt version 0x00010000 for version 1.0.
// quint16 numTables Number of tables.
// quint16 searchRange (Maximum power of 2 <= numTables) x 16.
// quint16 entrySelector Log2(maximum power of 2 <= numTables).
// quint16 rangeShift NumTables x 16-searchRange.
f << qint32(0x00010000)
<< quint16(tables.size())
<< quint16(16*pow)
<< quint16(log2)
<< quint16(16*(tables.size() - pow));
// Table Directory
// Type Name Description
// quint32 tag 4 -byte identifier.
// quint32 checkSum CheckSum for this table.
// quint32 offset Offset from beginning of TrueType font file.
// quint32 length Length of this table.
quint32 table_offset = header_size + directory_size;
for (int i = 0; i < tables.size(); ++i) {
const QTtfTable &t = tables.at(i);
const quint32 size = (t.data.size() + 3) & ~3;
if (t.tag == MAKE_TAG('h', 'e', 'a', 'd'))
head_offset = table_offset;
f << t.tag
<< checksum(t.data)
<< table_offset
<< t.data.size();
table_offset += size;
#define TAG(x) char(t.tag >> 24) << char((t.tag >> 16) & 0xff) << char((t.tag >> 8) & 0xff) << char(t.tag & 0xff)
//qDebug() << "table " << TAG(t.tag) << "has size " << t.data.size() << "stream at " << f.offset();
}
}
for (int i = 0; i < tables.size(); ++i) {
const QByteArray &t = tables.at(i).data;
font += t;
int s = t.size();
while (s & 3) { font += '\0'; ++s; }
}
if (!head_offset) {
qWarning("QFontSubset: Font misses 'head' table");
return QByteArray();
}
// calculate the fonts checksum and qToBigEndian into 'head's checksum_adjust
quint32 checksum_adjust = 0xB1B0AFBA - checksum(font);
qToBigEndian(checksum_adjust, (uchar *)font.data() + head_offset + 8);
return font;
}
/*
PDF requires the following tables:
head, hhea, loca, maxp, cvt , prep, glyf, hmtx, fpgm
This means we don't have to add a os/2, post or name table. cvt , prep and fpgm could be empty
if really required.
*/
QByteArray QFontSubset::toTruetype() const
{
qttf_font_tables font;
memset(&font, 0, sizeof(qttf_font_tables));
qreal ppem = fontEngine->fontDef.pixelSize;
#define TO_TTF(x) qRound(x * 2048. / ppem)
QList<QTtfGlyph> glyphs;
QFontEngine::Properties properties = fontEngine->properties();
// initialize some stuff needed in createWidthArray
emSquare = 2048;
widths.resize(nGlyphs());
// head table
font.head.font_revision = 0x00010000;
font.head.flags = (1 << 2) | (1 << 4);
font.head.created = 0; // ###
font.head.modified = 0; // ###
font.head.xMin = SHRT_MAX;
font.head.xMax = SHRT_MIN;
font.head.yMin = SHRT_MAX;
font.head.yMax = SHRT_MIN;
font.head.macStyle = (fontEngine->fontDef.weight > QFont::Normal) ? 1 : 0;
font.head.macStyle |= (fontEngine->fontDef.styleHint != QFont::StyleNormal) ? 1 : 0;
// hhea table
font.hhea.ascender = qRound(properties.ascent);
font.hhea.descender = -qRound(properties.descent);
font.hhea.lineGap = qRound(properties.leading);
font.hhea.maxAdvanceWidth = TO_TTF(fontEngine->maxCharWidth());
font.hhea.minLeftSideBearing = TO_TTF(fontEngine->minLeftBearing());
font.hhea.minRightSideBearing = TO_TTF(fontEngine->minRightBearing());
font.hhea.xMaxExtent = SHRT_MIN;
font.maxp.numGlyphs = 0;
font.maxp.maxPoints = 0;
font.maxp.maxContours = 0;
font.maxp.maxCompositePoints = 0;
font.maxp.maxCompositeContours = 0;
font.maxp.maxComponentElements = 0;
font.maxp.maxComponentDepth = 0;
font.maxp.numGlyphs = nGlyphs();
uint sumAdvances = 0;
for (int i = 0; i < nGlyphs(); ++i) {
glyph_t g = glyph_indices.at(i);
QPainterPath path;
glyph_metrics_t metric;
fontEngine->getUnscaledGlyph(g, &path, &metric);
if (noEmbed) {
path = QPainterPath();
if (g == 0)
path.addRect(QRectF(0, 0, 1000, 1000));
}
QTtfGlyph glyph = generateGlyph(i, path, metric.xoff.toReal(), metric.x.toReal(), properties.emSquare.toReal());
font.head.xMin = qMin(font.head.xMin, glyph.xMin);
font.head.xMax = qMax(font.head.xMax, glyph.xMax);
font.head.yMin = qMin(font.head.yMin, glyph.yMin);
font.head.yMax = qMax(font.head.yMax, glyph.yMax);
font.hhea.xMaxExtent = qMax(font.hhea.xMaxExtent, (qint16)(glyph.lsb + glyph.xMax - glyph.xMin));
font.maxp.maxPoints = qMax(font.maxp.maxPoints, glyph.numPoints);
font.maxp.maxContours = qMax(font.maxp.maxContours, glyph.numContours);
if (glyph.xMax > glyph.xMin)
sumAdvances += glyph.xMax - glyph.xMin;
// qDebug("adding glyph %d size=%d", glyph.index, glyph.data.size());
glyphs.append(glyph);
widths[i] = glyph.advanceWidth;
}
QList<QTtfTable> tables = generateGlyphTables(font, glyphs);
tables.append(generateHead(font.head));
tables.append(generateHhea(font.hhea));
tables.append(generateMaxp(font.maxp));
// name
QTtfTable name_table;
name_table.tag = MAKE_TAG('n', 'a', 'm', 'e');
if (!noEmbed)
name_table.data = fontEngine->getSfntTable(name_table.tag);
if (name_table.data.isEmpty()) {
qttf_name_table name;
if (noEmbed)
name.copyright = QLatin1String("Fake font");
else
name.copyright = QLatin1String(properties.copyright);
name.family = fontEngine->fontDef.family;
name.subfamily = QLatin1String("Regular"); // ######
name.postscript_name = QLatin1String(properties.postscriptName);
name_table = generateName(name);
}
tables.append(name_table);
if (!noEmbed) {
QTtfTable os2;
os2.tag = MAKE_TAG('O', 'S', '/', '2');
os2.data = fontEngine->getSfntTable(os2.tag);
if (!os2.data.isEmpty())
tables.append(os2);
}
return bindFont(tables);
}
// ------------------ Type 1 generation ---------------------------
// needs at least 6 bytes of space in tmp
static const char *encodeNumber(int num, char *tmp)
{
const char *ret = tmp;
if(num >= -107 && num <= 107) {
QPdf::toHex((uchar)(num + 139), tmp);
tmp += 2;
} else if (num > 107 && num <= 1131) {
num -= 108;
QPdf::toHex((uchar)((num >> 8) + 247), tmp);
tmp += 2;
QPdf::toHex((uchar)(num & 0xff), tmp);
tmp += 2;
} else if(num < - 107 && num >= -1131) {
num += 108;
num = -num;
QPdf::toHex((uchar)((num >> 8) + 251), tmp);
tmp += 2;
QPdf::toHex((uchar)(num & 0xff), tmp);
tmp += 2;
} else {
*tmp++ = 'f';
*tmp++ = 'f';
QPdf::toHex((uchar)(num >> 24), tmp);
tmp += 2;
QPdf::toHex((uchar)(num >> 16), tmp);
tmp += 2;
QPdf::toHex((uchar)(num >> 8), tmp);
tmp += 2;
QPdf::toHex((uchar)(num >> 0), tmp);
tmp += 2;
}
*tmp = 0;
// qDebug("encodeNumber: %d -> '%s'", num, ret);
return ret;
}
static QByteArray charString(const QPainterPath &path, qreal advance, qreal lsb, qreal ppem)
{
// the charstring commands we need
const char *hsbw = "0D";
const char *closepath = "09";
const char *moveto[3] = { "16", "04", "15" };
const char *lineto[3] = { "06", "07", "05" };
const char *rcurveto = "08";
const char *endchar = "0E";
enum { horizontal = 1, vertical = 2 };
char tmp[16];
qreal factor = 1000./ppem;
int lsb_i = qRound(lsb*factor);
int advance_i = qRound(advance*factor);
// qDebug("--- charstring");
// first of all add lsb and width to the charstring using the hsbw command
QByteArray charstring;
charstring += encodeNumber(lsb_i, tmp);
charstring += encodeNumber(advance_i, tmp);
charstring += hsbw;
// add the path
int xl = lsb_i;
int yl = 0;
bool openpath = false;
for (int i = 0; i < path.elementCount(); ++i) {
const QPainterPath::Element &elm = path.elementAt(i);
int x = qRound(elm.x*factor);
int y = -qRound(elm.y*factor);
int dx = x - xl;
int dy = y - yl;
if (elm.type == QPainterPath::MoveToElement && openpath) {
// qDebug("closepath %s", closepath);
charstring += closepath;
}
if (elm.type == QPainterPath::MoveToElement ||
elm.type == QPainterPath::LineToElement) {
int type = -1;
if (dx || !dy) {
charstring += encodeNumber(dx, tmp);
type += horizontal;
// qDebug("horizontal");
}
if (dy) {
charstring += encodeNumber(dy, tmp);
type += vertical;
// qDebug("vertical");
}
// qDebug("moveto/lineto %s", (elm.type == QPainterPath::MoveToElement ? moveto[type] : lineto[type]));
charstring += (elm.type == QPainterPath::MoveToElement ? moveto[type] : lineto[type]);
openpath = true;
xl = x;
yl = y;
} else {
Q_ASSERT(elm.type == QPainterPath::CurveToElement);
const QPainterPath::Element &elm2 = path.elementAt(++i);
const QPainterPath::Element &elm3 = path.elementAt(++i);
int x2 = qRound(elm2.x*factor);
int y2 = -qRound(elm2.y*factor);
int x3 = qRound(elm3.x*factor);
int y3 = -qRound(elm3.y*factor);
charstring += encodeNumber(dx, tmp);
charstring += encodeNumber(dy, tmp);
charstring += encodeNumber(x2 - x, tmp);
charstring += encodeNumber(y2 - y, tmp);
charstring += encodeNumber(x3 - x2, tmp);
charstring += encodeNumber(y3 - y2, tmp);
charstring += rcurveto;
openpath = true;
xl = x3;
yl = y3;
// qDebug("rcurveto");
}
}
if (openpath)
charstring += closepath;
charstring += endchar;
if (charstring.length() > 240) {
int pos = 240;
while (pos < charstring.length()) {
charstring.insert(pos, '\n');
pos += 241;
}
}
return charstring;
}
#ifndef QT_NO_FREETYPE
static const char *helvetica_styles[4] = {
"Helvetica",
"Helvetica-Bold",
"Helvetica-Oblique",
"Helvetica-BoldOblique"
};
static const char *times_styles[4] = {
"Times-Regular",
"Times-Bold",
"Times-Italic",
"Times-BoldItalic"
};
static const char *courier_styles[4] = {
"Courier",
"Courier-Bold",
"Courier-Oblique",
"Courier-BoldOblique"
};
#endif
QByteArray QFontSubset::toType1() const
{
QFontEngine::Properties properties = fontEngine->properties();
QVector<int> reverseMap = getReverseMap();
QByteArray font;
QPdf::ByteStream s(&font);
QByteArray id = QByteArray::number(object_id);
QByteArray psname = properties.postscriptName;
psname.replace(' ', "");
standard_font = false;
#ifndef QT_NO_FREETYPE
FT_Face face = ft_face(fontEngine);
if (face && !FT_IS_SCALABLE(face)) {
int style = 0;
if (fontEngine->fontDef.style)
style += 2;
if (fontEngine->fontDef.weight >= QFont::Bold)
style++;
if (fontEngine->fontDef.family.contains(QLatin1String("Helvetica"))) {
psname = helvetica_styles[style];
standard_font = true;
} else if (fontEngine->fontDef.family.contains(QLatin1String("Times"))) {
psname = times_styles[style];
standard_font = true;
} else if (fontEngine->fontDef.family.contains(QLatin1String("Courier"))) {
psname = courier_styles[style];
standard_font = true;
}
}
#endif
s << "/F" << id << "-Base\n";
if (standard_font) {
s << '/' << psname << " findfont\n"
"0 dict copy dup /NumGlyphs 0 put dup /CMap 256 array put def\n";
} else {
s << "<<\n";
if(!psname.isEmpty())
s << "/FontName /" << psname << '\n';
s << "/FontInfo <</FsType " << (int)fontEngine->fsType << ">>\n"
"/FontType 1\n"
"/PaintType 0\n"
"/FontMatrix [.001 0 0 .001 0 0]\n"
"/FontBBox { 0 0 0 0 }\n"
"/Private <<\n"
"/password 5839\n"
"/MinFeature {16 16}\n"
"/BlueValues []\n"
"/lenIV -1\n"
">>\n"
"/CharStrings << >>\n"
"/NumGlyphs 0\n"
"/CMap 256 array\n"
">> def\n";
}
s << type1AddedGlyphs();
downloaded_glyphs = glyph_indices.size();
return font;
}
QByteArray QFontSubset::type1AddedGlyphs() const
{
if (downloaded_glyphs == glyph_indices.size())
return QByteArray();
QFontEngine::Properties properties = fontEngine->properties();
QVector<int> reverseMap = getReverseMap();
QByteArray glyphs;
QPdf::ByteStream s(&glyphs);
int nGlyphs = glyph_indices.size();
QByteArray id = QByteArray::number(object_id);
s << 'F' << id << "-Base [\n";
for (int i = downloaded_glyphs; i < nGlyphs; ++i) {
glyph_t g = glyph_indices.at(i);
QPainterPath path;
glyph_metrics_t metric;
fontEngine->getUnscaledGlyph(g, &path, &metric);
QByteArray charstring = charString(path, metric.xoff.toReal(), metric.x.toReal(),
properties.emSquare.toReal());
s << glyphName(i, reverseMap);
if (!standard_font)
s << "\n<" << charstring << ">\n";
}
s << (standard_font ? "] T1AddMapping\n" : "] T1AddGlyphs\n");
return glyphs;
}
QT_END_NAMESPACE
#endif // QT_NO_PRINTER