/**************************************************************************** ** ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/ ** ** 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. ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include "qfontsubset_p.h" #include #include #include "private/qpdf_p.h" #include "private/qfunctions_p.h" 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; } QByteArray QFontSubset::glyphName(unsigned int glyph, const QVector reverseMap) const { uint glyphIndex = glyph_indices[glyph]; if (glyphIndex == 0) return "/.notdef"; QByteArray ba; QPdf::ByteStream s(&ba); 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 QFontSubset::getReverseMap() const { QVector 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 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> \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 generateGlyphTables(qttf_font_tables &tables, const QList &_glyphs); static QByteArray bindFont(const QList& _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(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 &name); static QTtfTable generateName(const qttf_name_table &name) { QList 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 &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 *points, QList *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 &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 *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 &points, const QList &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 points; QList 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 generateGlyphTables(qttf_font_tables &tables, const QList &_glyphs) { const int max_size_small = 65536*2; QList 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 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& _tables) { QList 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 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 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); } QT_END_NAMESPACE