qfontsubset.cpp

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1/****************************************************************************-
2**-
3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
5**-
6** This file is part of the QtGui module of the Qt Toolkit.-
7**-
8** $QT_BEGIN_LICENSE:LGPL$-
9** Commercial License Usage-
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15** information use the contact form at https://www.qt.io/contact-us.-
16**-
17** GNU Lesser General Public License Usage-
18** Alternatively, this file may be used under the terms of the GNU Lesser-
19** General Public License version 3 as published by the Free Software-
20** Foundation and appearing in the file LICENSE.LGPL3 included in the-
21** packaging of this file. Please review the following information to-
22** ensure the GNU Lesser General Public License version 3 requirements-
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.-
24**-
25** GNU General Public License Usage-
26** Alternatively, this file may be used under the terms of the GNU-
27** General Public License version 2.0 or (at your option) the GNU General-
28** Public license version 3 or any later version approved by the KDE Free-
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35**-
36** $QT_END_LICENSE$-
37**-
38****************************************************************************/-
39-
40#include "qfontsubset_p.h"-
41#include <qdebug.h>-
42#include <qendian.h>-
43#include <qpainterpath.h>-
44#include "private/qpdf_p.h"-
45-
46#include "qfontsubset_agl.cpp"-
47-
48#include <algorithm>-
49-
50QT_BEGIN_NAMESPACE-
51-
52// This map is used for symbol fonts to get the correct glyph names for the latin range-
53static const unsigned short symbol_map[0x100] = {-
54 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007,-
55 0x0008, 0x0009, 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f,-
56 0x0010, 0x0011, 0x0012, 0x0013, 0x0014, 0x0015, 0x0016, 0x0017,-
57 0x0018, 0x0019, 0x001a, 0x001b, 0x001c, 0x001d, 0x001e, 0x001f,-
58 0x0020, 0x0021, 0x2200, 0x0023, 0x2203, 0x0025, 0x0026, 0x220b,-
59 0x0028, 0x0029, 0x2217, 0x002b, 0x002c, 0x2212, 0x002e, 0x002f,-
60 0x0030, 0x0031, 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037,-
61 0x0038, 0x0039, 0x003a, 0x003b, 0x003c, 0x003d, 0x003e, 0x003f,-
62-
63 0x2245, 0x0391, 0x0392, 0x03a7, 0x0394, 0x0395, 0x03a6, 0x0393,-
64 0x0397, 0x0399, 0x03d1, 0x039a, 0x039b, 0x039c, 0x039d, 0x039f,-
65 0x03a0, 0x0398, 0x03a1, 0x03a3, 0x03a4, 0x03a5, 0x03c2, 0x03a9,-
66 0x039e, 0x03a8, 0x0396, 0x005b, 0x2234, 0x005d, 0x22a5, 0x005f,-
67 0xf8e5, 0x03b1, 0x03b2, 0x03c7, 0x03b4, 0x03b5, 0x03c6, 0x03b3,-
68 0x03b7, 0x03b9, 0x03d5, 0x03ba, 0x03bb, 0x03bc, 0x03bd, 0x03bf,-
69 0x03c0, 0x03b8, 0x03c1, 0x03c3, 0x03c4, 0x03c5, 0x03d6, 0x03c9,-
70 0x03be, 0x03c8, 0x03b6, 0x007b, 0x007c, 0x007d, 0x223c, 0x007f,-
71-
72 0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,-
73 0x0088, 0x0089, 0x008a, 0x008b, 0x008c, 0x008d, 0x008e, 0x008f,-
74 0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,-
75 0x0098, 0x0099, 0x009a, 0x009b, 0x009c, 0x009d, 0x009e, 0x009f,-
76 0x20ac, 0x03d2, 0x2023, 0x2264, 0x2044, 0x221e, 0x0192, 0x2263,-
77 0x2666, 0x2665, 0x2660, 0x2194, 0x2190, 0x2191, 0x2192, 0x2193,-
78 0x00b0, 0x00b1, 0x2033, 0x2265, 0x00d7, 0x221d, 0x2202, 0x2022,-
79 0x00f7, 0x2260, 0x2261, 0x2248, 0x2026, 0xf8e6, 0xf8e7, 0x21b5,-
80-
81 0x2135, 0x2111, 0x211c, 0x2118, 0x2297, 0x2295, 0x2205, 0x2229,-
82 0x222a, 0x2283, 0x2287, 0x2284, 0x2282, 0x2286, 0x2208, 0x2209,-
83 0x2220, 0x2207, 0xf6da, 0xf6d9, 0xf6db, 0x220f, 0x221a, 0x22c5,-
84 0x00ac, 0x2227, 0x2228, 0x21d4, 0x21d0, 0x21d1, 0x21d2, 0x21d3,-
85 0x25ca, 0x2329, 0xf8e8, 0xf8e9, 0xf8ea, 0x2211, 0xf8eb, 0xf8ec,-
86 0xf8ed, 0xf8ee, 0xf8ef, 0xf8f0, 0xf8f1, 0xf8f2, 0xf8f3, 0xf8f4,-
87 0x0000, 0x232a, 0x222b, 0x2320, 0xf8f5, 0x2321, 0xf8f6, 0xf8f7,-
88 0xf8f8, 0xf8f9, 0xf8fa, 0xf8fb, 0xf8fc, 0xf8fd, 0xf8fe, 0x0000-
89};-
90-
91// ---------------------------- PS/PDF helper methods ------------------------------------
92-
93#ifndef QT_NO_PDF-
94-
95QByteArray QFontSubset::glyphName(unsigned short unicode, bool symbol)-
96{-
97 if (symbol && unicode < 0x100)
symbolDescription
TRUEnever evaluated
FALSEnever evaluated
unicode < 0x100Description
TRUEnever evaluated
FALSEnever evaluated
0
98 // map from latin1 to symbol-
99 unicode = symbol_map[unicode];
never executed: unicode = symbol_map[unicode];
0
100-
101 const AGLEntry *r = std::lower_bound(unicode_to_agl_map, unicode_to_agl_map + unicode_to_agl_map_size, unicode);-
102 if ((r != unicode_to_agl_map + unicode_to_agl_map_size) && !(unicode < *r))
(r != unicode_..._agl_map_size)Description
TRUEnever evaluated
FALSEnever evaluated
!(unicode < *r)Description
TRUEnever evaluated
FALSEnever evaluated
0
103 return glyph_names + r->index;
never executed: return glyph_names + r->index;
0
104-
105 char buffer[8];-
106 buffer[0] = 'u';-
107 buffer[1] = 'n';-
108 buffer[2] = 'i';-
109 QPdf::toHex(unicode, buffer+3);-
110 return buffer;
never executed: return buffer;
0
111}-
112-
113QByteArray QFontSubset::glyphName(unsigned int glyph, const QVector<int> &reverseMap) const-
114{-
115 uint glyphIndex = glyph_indices[glyph];-
116-
117 if (glyphIndex == 0)
glyphIndex == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
118 return "/.notdef";
never executed: return "/.notdef";
0
119-
120 QByteArray ba;-
121 QPdf::ByteStream s(&ba);-
122 if (reverseMap[glyphIndex] && reverseMap[glyphIndex] < 0x10000) {
reverseMap[glyphIndex]Description
TRUEnever evaluated
FALSEnever evaluated
reverseMap[gly...dex] < 0x10000Description
TRUEnever evaluated
FALSEnever evaluated
0
123 s << '/' << glyphName(reverseMap[glyphIndex], false);-
124 } else {
never executed: end of block
0
125 s << "/gl" << (int)glyphIndex;-
126 }
never executed: end of block
0
127 return ba;
never executed: return ba;
0
128}-
129-
130-
131QByteArray QFontSubset::widthArray() const-
132{-
133 Q_ASSERT(!widths.isEmpty());-
134-
135 QFontEngine::Properties properties = fontEngine->properties();-
136-
137 QByteArray width;-
138 QPdf::ByteStream s(&width);-
139 QFixed scale = QFixed(1000)/emSquare;-
140-
141 QFixed defWidth = widths[0];-
142 //qDebug("defWidth=%d, scale=%f", defWidth.toInt(), scale.toReal());-
143 for (int i = 0; i < nGlyphs(); ++i) {
i < nGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
0
144 if (defWidth != widths[i])
defWidth != widths[i]Description
TRUEnever evaluated
FALSEnever evaluated
0
145 defWidth = 0;
never executed: defWidth = 0;
0
146 }
never executed: end of block
0
147 if (defWidth > 0) {
defWidth > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
148 s << "/DW " << (defWidth*scale).toInt();-
149 } else {
never executed: end of block
0
150 s << "/W [";-
151 for (int g = 0; g < nGlyphs();) {
g < nGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
0
152 QFixed w = widths[g];-
153 int start = g;-
154 int startLinear = 0;-
155 ++g;-
156 while (g < nGlyphs()) {
g < nGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
0
157 QFixed nw = widths[g];-
158 if (nw == w) {
nw == wDescription
TRUEnever evaluated
FALSEnever evaluated
0
159 if (!startLinear)
!startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
160 startLinear = g - 1;
never executed: startLinear = g - 1;
0
161 } else {
never executed: end of block
0
162 if (startLinear > 0 && g - startLinear >= 10)
startLinear > 0Description
TRUEnever evaluated
FALSEnever evaluated
g - startLinear >= 10Description
TRUEnever evaluated
FALSEnever evaluated
0
163 break;
never executed: break;
0
164 startLinear = 0;-
165 }
never executed: end of block
0
166 w = nw;-
167 ++g;-
168 }
never executed: end of block
0
169 // qDebug("start=%x startLinear=%x g-1=%x",start,startLinear,g-1);-
170 if (g - startLinear < 10)
g - startLinear < 10Description
TRUEnever evaluated
FALSEnever evaluated
0
171 startLinear = 0;
never executed: startLinear = 0;
0
172 int endnonlinear = startLinear ? startLinear : g;
startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
173 // qDebug(" startLinear=%x endnonlinear=%x", startLinear,endnonlinear);-
174 if (endnonlinear > start) {
endnonlinear > startDescription
TRUEnever evaluated
FALSEnever evaluated
0
175 s << start << '[';-
176 for (int i = start; i < endnonlinear; ++i)
i < endnonlinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
177 s << (widths[i]*scale).toInt();
never executed: s << (widths[i]*scale).toInt();
0
178 s << "]\n";-
179 }
never executed: end of block
0
180 if (startLinear)
startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
181 s << startLinear << g - 1 << (widths[startLinear]*scale).toInt() << '\n';
never executed: s << startLinear << g - 1 << (widths[startLinear]*scale).toInt() << '\n';
0
182 }
never executed: end of block
0
183 s << "]\n";-
184 }
never executed: end of block
0
185 return width;
never executed: return width;
0
186}-
187-
188static void checkRanges(QPdf::ByteStream &ts, QByteArray &ranges, int &nranges)-
189{-
190 if (++nranges > 100) {
++nranges > 100Description
TRUEnever evaluated
FALSEnever evaluated
0
191 ts << nranges << "beginbfrange\n"-
192 << ranges << "endbfrange\n";-
193 ranges = QByteArray();-
194 nranges = 0;-
195 }
never executed: end of block
0
196}
never executed: end of block
0
197-
198QVector<int> QFontSubset::getReverseMap() const-
199{-
200 QVector<int> reverseMap(0x10000, 0);-
201 for (uint uc = 0; uc < 0x10000; ++uc) {
uc < 0x10000Description
TRUEnever evaluated
FALSEnever evaluated
0
202 int idx = glyph_indices.indexOf(fontEngine->glyphIndex(uc));-
203 if (idx >= 0 && !reverseMap.at(idx))
idx >= 0Description
TRUEnever evaluated
FALSEnever evaluated
!reverseMap.at(idx)Description
TRUEnever evaluated
FALSEnever evaluated
0
204 reverseMap[idx] = uc;
never executed: reverseMap[idx] = uc;
0
205 }
never executed: end of block
0
206 return reverseMap;
never executed: return reverseMap;
0
207}-
208-
209QByteArray QFontSubset::createToUnicodeMap() const-
210{-
211 QVector<int> reverseMap = getReverseMap();-
212-
213 QByteArray touc;-
214 QPdf::ByteStream ts(&touc);-
215 ts << "/CIDInit /ProcSet findresource begin\n"-
216 "12 dict begin\n"-
217 "begincmap\n"-
218 "/CIDSystemInfo << /Registry (Adobe) /Ordering (UCS) /Supplement 0 >> def\n"-
219 "/CMapName /Adobe-Identity-UCS def\n"-
220 "/CMapType 2 def\n"-
221 "1 begincodespacerange\n"-
222 "<0000> <FFFF>\n"-
223 "endcodespacerange\n";-
224-
225 int nranges = 1;-
226 QByteArray ranges = "<0000> <0000> <0000>\n";-
227 QPdf::ByteStream s(&ranges);-
228-
229 char buf[5];-
230 for (int g = 1; g < nGlyphs(); ) {
g < nGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
0
231 int uc0 = reverseMap.at(g);-
232 if (!uc0) {
!uc0Description
TRUEnever evaluated
FALSEnever evaluated
0
233 ++g;-
234 continue;
never executed: continue;
0
235 }-
236 int start = g;-
237 int startLinear = 0;-
238 ++g;-
239 while (g < nGlyphs()) {
g < nGlyphs()Description
TRUEnever evaluated
FALSEnever evaluated
0
240 int uc = reverseMap[g];-
241 // cmaps can't have the high byte changing within one range, so we need to break on that as well-
242 if (!uc || (g>>8) != (start >> 8))
!ucDescription
TRUEnever evaluated
FALSEnever evaluated
(g>>8) != (start >> 8)Description
TRUEnever evaluated
FALSEnever evaluated
0
243 break;
never executed: break;
0
244 if (uc == uc0 + 1) {
uc == uc0 + 1Description
TRUEnever evaluated
FALSEnever evaluated
0
245 if (!startLinear)
!startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
246 startLinear = g - 1;
never executed: startLinear = g - 1;
0
247 } else {
never executed: end of block
0
248 if (startLinear > 0 && g - startLinear >= 10)
startLinear > 0Description
TRUEnever evaluated
FALSEnever evaluated
g - startLinear >= 10Description
TRUEnever evaluated
FALSEnever evaluated
0
249 break;
never executed: break;
0
250 startLinear = 0;-
251 }
never executed: end of block
0
252 uc0 = uc;-
253 ++g;-
254 }
never executed: end of block
0
255 // qDebug("start=%x startLinear=%x g-1=%x",start,startLinear,g-1);-
256 if (g - startLinear < 10)
g - startLinear < 10Description
TRUEnever evaluated
FALSEnever evaluated
0
257 startLinear = 0;
never executed: startLinear = 0;
0
258 int endnonlinear = startLinear ? startLinear : g;
startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
259 // qDebug(" startLinear=%x endnonlinear=%x", startLinear,endnonlinear);-
260 if (endnonlinear > start) {
endnonlinear > startDescription
TRUEnever evaluated
FALSEnever evaluated
0
261 s << '<' << QPdf::toHex((ushort)start, buf) << "> <";-
262 s << QPdf::toHex((ushort)(endnonlinear - 1), buf) << "> ";-
263 if (endnonlinear == start + 1) {
endnonlinear == start + 1Description
TRUEnever evaluated
FALSEnever evaluated
0
264 s << '<' << QPdf::toHex((ushort)reverseMap[start], buf) << ">\n";-
265 } else {
never executed: end of block
0
266 s << '[';-
267 for (int i = start; i < endnonlinear; ++i) {
i < endnonlinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
268 s << '<' << QPdf::toHex((ushort)reverseMap[i], buf) << "> ";-
269 }
never executed: end of block
0
270 s << "]\n";-
271 }
never executed: end of block
0
272 checkRanges(ts, ranges, nranges);-
273 }
never executed: end of block
0
274 if (startLinear) {
startLinearDescription
TRUEnever evaluated
FALSEnever evaluated
0
275 while (startLinear < g) {
startLinear < gDescription
TRUEnever evaluated
FALSEnever evaluated
0
276 int len = g - startLinear;-
277 int uc_start = reverseMap[startLinear];-
278 int uc_end = uc_start + len - 1;-
279 if ((uc_end >> 8) != (uc_start >> 8))
(uc_end >> 8) ...uc_start >> 8)Description
TRUEnever evaluated
FALSEnever evaluated
0
280 len = 256 - (uc_start & 0xff);
never executed: len = 256 - (uc_start & 0xff);
0
281 s << '<' << QPdf::toHex((ushort)startLinear, buf) << "> <";-
282 s << QPdf::toHex((ushort)(startLinear + len - 1), buf) << "> ";-
283 s << '<' << QPdf::toHex((ushort)reverseMap[startLinear], buf) << ">\n";-
284 checkRanges(ts, ranges, nranges);-
285 startLinear += len;-
286 }
never executed: end of block
0
287 }
never executed: end of block
0
288 }
never executed: end of block
0
289 if (nranges) {
nrangesDescription
TRUEnever evaluated
FALSEnever evaluated
0
290 ts << nranges << "beginbfrange\n"-
291 << ranges << "endbfrange\n";-
292 }
never executed: end of block
0
293 ts << "endcmap\n"-
294 "CMapName currentdict /CMap defineresource pop\n"-
295 "end\n"-
296 "end\n";-
297-
298 return touc;
never executed: return touc;
0
299}-
300-
301int QFontSubset::addGlyph(int index)-
302{-
303 int idx = glyph_indices.indexOf(index);-
304 if (idx < 0) {
idx < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
305 idx = glyph_indices.size();-
306 glyph_indices.append(index);-
307 }
never executed: end of block
0
308 return idx;
never executed: return idx;
0
309}-
310-
311#endif // QT_NO_PDF-
312-
313// ------------------------------ Truetype generation -----------------------------------------------
314-
315typedef qint16 F2DOT14;-
316typedef quint32 Tag;-
317typedef quint16 GlyphID;-
318typedef quint16 Offset;-
319-
320-
321class QTtfStream {-
322public:-
323 QTtfStream(QByteArray &ba) : data((uchar *)ba.data()) { start = data; }
never executed: end of block
0
324 QTtfStream &operator <<(quint8 v) { *data = v; ++data; return *this; }
never executed: return *this;
0
325 QTtfStream &operator <<(quint16 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
never executed: return *this;
0
326 QTtfStream &operator <<(quint32 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
never executed: return *this;
0
327 QTtfStream &operator <<(qint8 v) { *data = quint8(v); ++data; return *this; }
never executed: return *this;
0
328 QTtfStream &operator <<(qint16 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
never executed: return *this;
0
329 QTtfStream &operator <<(qint32 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
never executed: return *this;
0
330 QTtfStream &operator <<(qint64 v) { qToBigEndian(v, data); data += sizeof(v); return *this; }
never executed: return *this;
0
331-
332 int offset() const { return data - start; }
never executed: return data - start;
0
333 void setOffset(int o) { data = start + o; }
never executed: end of block
0
334 void align4() { while (offset() & 3) { *data = '\0'; ++data; } }
never executed: end of block
never executed: end of block
offset() & 3Description
TRUEnever evaluated
FALSEnever evaluated
0
335private:-
336 uchar *data;-
337 uchar *start;-
338};-
339-
340struct QTtfTable {-
341 Tag tag;-
342 QByteArray data;-
343};-
344Q_DECLARE_TYPEINFO(QTtfTable, Q_MOVABLE_TYPE);-
345-
346-
347struct qttf_head_table {-
348 qint32 font_revision;-
349 quint16 flags;-
350 qint64 created;-
351 qint64 modified;-
352 qint16 xMin;-
353 qint16 yMin;-
354 qint16 xMax;-
355 qint16 yMax;-
356 quint16 macStyle;-
357 qint16 indexToLocFormat;-
358};-
359Q_DECLARE_TYPEINFO(qttf_head_table, Q_PRIMITIVE_TYPE);-
360-
361-
362struct qttf_hhea_table {-
363 qint16 ascender;-
364 qint16 descender;-
365 qint16 lineGap;-
366 quint16 maxAdvanceWidth;-
367 qint16 minLeftSideBearing;-
368 qint16 minRightSideBearing;-
369 qint16 xMaxExtent;-
370 quint16 numberOfHMetrics;-
371};-
372Q_DECLARE_TYPEINFO(qttf_hhea_table, Q_PRIMITIVE_TYPE);-
373-
374-
375struct qttf_maxp_table {-
376 quint16 numGlyphs;-
377 quint16 maxPoints;-
378 quint16 maxContours;-
379 quint16 maxCompositePoints;-
380 quint16 maxCompositeContours;-
381 quint16 maxComponentElements;-
382 quint16 maxComponentDepth;-
383};-
384Q_DECLARE_TYPEINFO(qttf_maxp_table, Q_PRIMITIVE_TYPE);-
385-
386struct qttf_name_table {-
387 QString copyright;-
388 QString family;-
389 QString subfamily;-
390 QString postscript_name;-
391};-
392Q_DECLARE_TYPEINFO(qttf_name_table, Q_MOVABLE_TYPE);-
393-
394-
395static QTtfTable generateHead(const qttf_head_table &head);-
396static QTtfTable generateHhea(const qttf_hhea_table &hhea);-
397static QTtfTable generateMaxp(const qttf_maxp_table &maxp);-
398static QTtfTable generateName(const qttf_name_table &name);-
399-
400struct qttf_font_tables-
401{-
402 qttf_head_table head;-
403 qttf_hhea_table hhea;-
404 qttf_maxp_table maxp;-
405};-
406-
407-
408struct QTtfGlyph {-
409 quint16 index;-
410 qint16 xMin;-
411 qint16 xMax;-
412 qint16 yMin;-
413 qint16 yMax;-
414 quint16 advanceWidth;-
415 qint16 lsb;-
416 quint16 numContours;-
417 quint16 numPoints;-
418 QByteArray data;-
419};-
420Q_DECLARE_TYPEINFO(QTtfGlyph, Q_MOVABLE_TYPE);-
421-
422static QTtfGlyph generateGlyph(int index, const QPainterPath &path, qreal advance, qreal lsb, qreal ppem);-
423// generates glyf, loca and hmtx-
424static QVector<QTtfTable> generateGlyphTables(qttf_font_tables &tables, const QVector<QTtfGlyph> &_glyphs);-
425-
426static QByteArray bindFont(const QVector<QTtfTable>& _tables);-
427-
428-
429static quint32 checksum(const QByteArray &table)-
430{-
431 quint32 sum = 0;-
432 int offset = 0;-
433 const uchar *d = (const uchar *)table.constData();-
434 while (offset <= table.size()-3) {
offset <= table.size()-3Description
TRUEnever evaluated
FALSEnever evaluated
0
435 sum += qFromBigEndian<quint32>(d + offset);-
436 offset += 4;-
437 }
never executed: end of block
0
438 int shift = 24;-
439 quint32 x = 0;-
440 while (offset < table.size()) {
offset < table.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
441 x |= ((quint32)d[offset]) << shift;-
442 ++offset;-
443 shift -= 8;-
444 }
never executed: end of block
0
445 sum += x;-
446-
447 return sum;
never executed: return sum;
0
448}-
449-
450static QTtfTable generateHead(const qttf_head_table &head)-
451{-
452 const int head_size = 54;-
453 QTtfTable t;-
454 t.tag = MAKE_TAG('h', 'e', 'a', 'd');-
455 t.data.resize(head_size);-
456-
457 QTtfStream s(t.data);-
458-
459// qint32 Table version number 0x00010000 for version 1.0.-
460// qint32 fontRevision Set by font manufacturer.-
461 s << qint32(0x00010000)-
462 << head.font_revision-
463// quint32 checkSumAdjustment To compute: set it to 0, sum the entire font as quint32, then store 0xB1B0AFBA - sum.-
464 << quint32(0)-
465// quint32 magicNumber Set to 0x5F0F3CF5.-
466 << quint32(0x5F0F3CF5)-
467// quint16 flags Bit 0: Baseline for font at y=0;-
468// Bit 1: Left sidebearing point at x=0;-
469// Bit 2: Instructions may depend on point size;-
470// Bit 3: Force ppem to integer values for all internal scaler math; may use fractional ppem sizes if this bit is clear;-
471// Bit 4: Instructions may alter advance width (the advance widths might not scale linearly);-
472// Bits 5-10: These should be set according to Apple's specification . However, they are not implemented in OpenType.-
473// Bit 11: Font data is 'lossless,' as a result of having been compressed and decompressed with the Agfa MicroType Express engine.-
474// Bit 12: Font converted (produce compatible metrics)-
475// Bit 13: Font optimized for ClearType-
476// Bit 14: Reserved, set to 0-
477// Bit 15: Reserved, set to 0-
478 << quint16(0)-
479-
480// quint16 unitsPerEm Valid range is from 16 to 16384. This value should be a power of 2 for fonts that have TrueType outlines.-
481 << quint16(2048)-
482// qint64 created Number of seconds since 12:00 midnight, January 1, 1904. 64-bit integer-
483 << head.created-
484// qint64 modified Number of seconds since 12:00 midnight, January 1, 1904. 64-bit integer-
485 << head.modified-
486// qint16 xMin For all glyph bounding boxes.-
487// qint16 yMin For all glyph bounding boxes.-
488// qint16 xMax For all glyph bounding boxes.-
489// qint16 yMax For all glyph bounding boxes.-
490 << head.xMin-
491 << head.yMin-
492 << head.xMax-
493 << head.yMax-
494// quint16 macStyle Bit 0: Bold (if set to 1);-
495// Bit 1: Italic (if set to 1)-
496// Bit 2: Underline (if set to 1)-
497// Bit 3: Outline (if set to 1)-
498// Bit 4: Shadow (if set to 1)-
499// Bit 5: Condensed (if set to 1)-
500// Bit 6: Extended (if set to 1)-
501// Bits 7-15: Reserved (set to 0).-
502 << head.macStyle-
503// quint16 lowestRecPPEM Smallest readable size in pixels.-
504 << quint16(6) // just a wild guess-
505// qint16 fontDirectionHint 0: Fully mixed directional glyphs;-
506 << qint16(0)-
507// 1: Only strongly left to right;-
508// 2: Like 1 but also contains neutrals;-
509// -1: Only strongly right to left;-
510// -2: Like -1 but also contains neutrals. 1-
511// qint16 indexToLocFormat 0 for short offsets, 1 for long.-
512 << head.indexToLocFormat-
513// qint16 glyphDataFormat 0 for current format.-
514 << qint16(0);-
515-
516 Q_ASSERT(s.offset() == head_size);-
517 return t;
never executed: return t;
0
518}-
519-
520-
521static QTtfTable generateHhea(const qttf_hhea_table &hhea)-
522{-
523 const int hhea_size = 36;-
524 QTtfTable t;-
525 t.tag = MAKE_TAG('h', 'h', 'e', 'a');-
526 t.data.resize(hhea_size);-
527-
528 QTtfStream s(t.data);-
529// qint32 Table version number 0x00010000 for version 1.0.-
530 s << qint32(0x00010000)-
531// qint16 Ascender Typographic ascent. (Distance from baseline of highest ascender)-
532 << hhea.ascender-
533// qint16 Descender Typographic descent. (Distance from baseline of lowest descender)-
534 << hhea.descender-
535// qint16 LineGap Typographic line gap.-
536// Negative LineGap values are treated as zero-
537// in Windows 3.1, System 6, and-
538// System 7.-
539 << hhea.lineGap-
540// quint16 advanceWidthMax Maximum advance width value in 'hmtx' table.-
541 << hhea.maxAdvanceWidth-
542// qint16 minLeftSideBearing Minimum left sidebearing value in 'hmtx' table.-
543 << hhea.minLeftSideBearing-
544// qint16 minRightSideBearing Minimum right sidebearing value; calculated as Min(aw - lsb - (xMax - xMin)).-
545 << hhea.minRightSideBearing-
546// qint16 xMaxExtent Max(lsb + (xMax - xMin)).-
547 << hhea.xMaxExtent-
548// qint16 caretSlopeRise Used to calculate the slope of the cursor (rise/run); 1 for vertical.-
549 << qint16(1)-
550// qint16 caretSlopeRun 0 for vertical.-
551 << qint16(0)-
552// 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-
553 << qint16(0)-
554// qint16 (reserved) set to 0-
555 << qint16(0)-
556// qint16 (reserved) set to 0-
557 << qint16(0)-
558// qint16 (reserved) set to 0-
559 << qint16(0)-
560// qint16 (reserved) set to 0-
561 << qint16(0)-
562// qint16 metricDataFormat 0 for current format.-
563 << qint16(0)-
564// quint16 numberOfHMetrics Number of hMetric entries in 'hmtx' table-
565 << hhea.numberOfHMetrics;-
566-
567 Q_ASSERT(s.offset() == hhea_size);-
568 return t;
never executed: return t;
0
569}-
570-
571-
572static QTtfTable generateMaxp(const qttf_maxp_table &maxp)-
573{-
574 const int maxp_size = 32;-
575 QTtfTable t;-
576 t.tag = MAKE_TAG('m', 'a', 'x', 'p');-
577 t.data.resize(maxp_size);-
578-
579 QTtfStream s(t.data);-
580-
581// qint32 Table version number 0x00010000 for version 1.0.-
582 s << qint32(0x00010000)-
583// quint16 numGlyphs The number of glyphs in the font.-
584 << maxp.numGlyphs-
585// quint16 maxPoints Maximum points in a non-composite glyph.-
586 << maxp.maxPoints-
587// quint16 maxContours Maximum contours in a non-composite glyph.-
588 << maxp.maxContours-
589// quint16 maxCompositePoints Maximum points in a composite glyph.-
590 << maxp.maxCompositePoints-
591// quint16 maxCompositeContours Maximum contours in a composite glyph.-
592 << maxp.maxCompositeContours-
593// 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.-
594 << quint16(1) // we do not embed instructions-
595// quint16 maxTwilightPoints Maximum points used in Z0.-
596 << quint16(0)-
597// quint16 maxStorage Number of Storage Area locations.-
598 << quint16(0)-
599// quint16 maxFunctionDefs Number of FDEFs.-
600 << quint16(0)-
601// quint16 maxInstructionDefs Number of IDEFs.-
602 << quint16(0)-
603// quint16 maxStackElements Maximum stack depth2.-
604 << quint16(0)-
605// quint16 maxSizeOfInstructions Maximum byte count for glyph instructions.-
606 << quint16(0)-
607// quint16 maxComponentElements Maximum number of components referenced at "top level" for any composite glyph.-
608 << maxp.maxComponentElements-
609// quint16 maxComponentDepth Maximum levels of recursion; 1 for simple components.-
610 << maxp.maxComponentDepth;-
611-
612 Q_ASSERT(s.offset() == maxp_size);-
613 return t;
never executed: return t;
0
614}-
615-
616struct QTtfNameRecord {-
617 quint16 nameId;-
618 QString value;-
619};-
620Q_DECLARE_TYPEINFO(QTtfNameRecord, Q_MOVABLE_TYPE);-
621-
622static QTtfTable generateName(const QVector<QTtfNameRecord> &name);-
623-
624static QTtfTable generateName(const qttf_name_table &name)-
625{-
626 QVector<QTtfNameRecord> list;-
627 list.reserve(5);-
628 QTtfNameRecord rec;-
629 rec.nameId = 0;-
630 rec.value = name.copyright;-
631 list.append(rec);-
632 rec.nameId = 1;-
633 rec.value = name.family;-
634 list.append(rec);-
635 rec.nameId = 2;-
636 rec.value = name.subfamily;-
637 list.append(rec);-
638 rec.nameId = 4;-
639 rec.value = name.family;-
640 if (name.subfamily != QLatin1String("Regular"))
name.subfamily...ing("Regular")Description
TRUEnever evaluated
FALSEnever evaluated
0
641 rec.value += QLatin1Char(' ') + name.subfamily;
never executed: rec.value += QLatin1Char(' ') + name.subfamily;
0
642 list.append(rec);-
643 rec.nameId = 6;-
644 rec.value = name.postscript_name;-
645 list.append(rec);-
646-
647 return generateName(list);
never executed: return generateName(list);
0
648}-
649-
650// ####### should probably generate Macintosh/Roman name entries as well-
651static QTtfTable generateName(const QVector<QTtfNameRecord> &name)-
652{-
653 const int char_size = 2;-
654-
655 QTtfTable t;-
656 t.tag = MAKE_TAG('n', 'a', 'm', 'e');-
657-
658 const int name_size = 6 + 12*name.size();-
659 int string_size = 0;-
660 for (int i = 0; i < name.size(); ++i) {
i < name.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
661 string_size += name.at(i).value.length()*char_size;-
662 }
never executed: end of block
0
663 t.data.resize(name_size + string_size);-
664-
665 QTtfStream s(t.data);-
666// quint16 format Format selector (=0).-
667 s << quint16(0)-
668// quint16 count Number of name records.-
669 << quint16(name.size())-
670// quint16 stringOffset Offset to start of string storage (from start of table).-
671 << quint16(name_size);-
672// NameRecord nameRecord[count] The name records where count is the number of records.-
673// (Variable)-
674-
675 int off = 0;-
676 for (int i = 0; i < name.size(); ++i) {
i < name.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
677 int len = name.at(i).value.length()*char_size;-
678// quint16 platformID Platform ID.-
679// quint16 encodingID Platform-specific encoding ID.-
680// quint16 languageID Language ID.-
681 s << quint16(3)-
682 << quint16(1)-
683 << quint16(0x0409) // en_US-
684// quint16 nameId Name ID.-
685 << name.at(i).nameId-
686// quint16 length String length (in bytes).-
687 << quint16(len)-
688// quint16 offset String offset from start of storage area (in bytes).-
689 << quint16(off);-
690 off += len;-
691 }
never executed: end of block
0
692 for (int i = 0; i < name.size(); ++i) {
i < name.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
693 const QString &n = name.at(i).value;-
694 const ushort *uc = n.utf16();-
695 for (int i = 0; i < n.length(); ++i) {
i < n.length()Description
TRUEnever evaluated
FALSEnever evaluated
0
696 s << quint16(*uc);-
697 ++uc;-
698 }
never executed: end of block
0
699 }
never executed: end of block
0
700 return t;
never executed: return t;
0
701}-
702-
703-
704enum Flags {-
705 OffCurve = 0,-
706 OnCurve = (1 << 0),-
707 XShortVector = (1 << 1),-
708 YShortVector = (1 << 2),-
709 Repeat = (1 << 3),-
710 XSame = (1 << 4),-
711 XShortPositive = (1 << 4),-
712 YSame = (1 << 5),-
713 YShortPositive = (1 << 5)-
714};-
715struct TTF_POINT {-
716 qint16 x;-
717 qint16 y;-
718 quint8 flags;-
719};-
720Q_DECLARE_TYPEINFO(TTF_POINT, Q_PRIMITIVE_TYPE);-
721-
722static void convertPath(const QPainterPath &path, QVector<TTF_POINT> *points, QVector<int> *endPoints, qreal ppem)-
723{-
724 int numElements = path.elementCount();-
725 for (int i = 0; i < numElements - 1; ++i) {
i < numElements - 1Description
TRUEnever evaluated
FALSEnever evaluated
0
726 const QPainterPath::Element &e = path.elementAt(i);-
727 TTF_POINT p;-
728 p.x = qRound(e.x * 2048. / ppem);-
729 p.y = qRound(-e.y * 2048. / ppem);-
730 p.flags = 0;-
731-
732 switch(e.type) {-
733 case QPainterPath::MoveToElement:
never executed: case QPainterPath::MoveToElement:
0
734 if (i != 0) {
i != 0Description
TRUEnever evaluated
FALSEnever evaluated
0
735 // see if start and end points of the last contour agree-
736 int start = endPoints->size() ? endPoints->at(endPoints->size()-1) - 1 : 0;
endPoints->size()Description
TRUEnever evaluated
FALSEnever evaluated
0
737 int end = points->size() - 1;-
738 if (points->at(end).x == points->at(start).x
points->at(end...s->at(start).xDescription
TRUEnever evaluated
FALSEnever evaluated
0
739 && points->at(end).y == points->at(start).y)
points->at(end...s->at(start).yDescription
TRUEnever evaluated
FALSEnever evaluated
0
740 points->takeLast();
never executed: points->takeLast();
0
741 endPoints->append(points->size() - 1);-
742 }
never executed: end of block
0
743 // fall through-
744 case QPainterPath::LineToElement:
code before this statement never executed: case QPainterPath::LineToElement:
never executed: case QPainterPath::LineToElement:
0
745 p.flags = OnCurve;-
746 break;
never executed: break;
0
747 case QPainterPath::CurveToElement: {
never executed: case QPainterPath::CurveToElement:
0
748 // cubic bezier curve, we need to reduce to a list of quadratic curves-
749 TTF_POINT list[3*16 + 4]; // we need max 16 subdivisions-
750 list[3] = points->at(points->size() - 1);-
751 list[2] = p;-
752 const QPainterPath::Element &e2 = path.elementAt(++i);-
753 list[1].x = qRound(e2.x * 2048. / ppem);-
754 list[1].y = qRound(-e2.y * 2048. / ppem);-
755 const QPainterPath::Element &e3 = path.elementAt(++i);-
756 list[0].x = qRound(e3.x * 2048. / ppem);-
757 list[0].y = qRound(-e3.y * 2048. / ppem);-
758-
759 TTF_POINT *base = list;-
760-
761 bool try_reduce = points->size() > 1
points->size() > 1Description
TRUEnever evaluated
FALSEnever evaluated
0
762 && points->at(points->size() - 1).flags == OnCurve
points->at(poi...ags == OnCurveDescription
TRUEnever evaluated
FALSEnever evaluated
0
763 && points->at(points->size() - 2).flags == OffCurve;
points->at(poi...gs == OffCurveDescription
TRUEnever evaluated
FALSEnever evaluated
0
764// qDebug("generating beziers:");-
765 while (base >= list) {
base >= listDescription
TRUEnever evaluated
FALSEnever evaluated
0
766 const int split_limit = 3;-
767// {-
768// qDebug("iteration:");-
769// TTF_POINT *x = list;-
770// while (x <= base + 3) {-
771// qDebug() << " " << QPoint(x->x, x->y);-
772// ++x;-
773// }-
774// }-
775 Q_ASSERT(base - list < 3*16 + 1);-
776 // first see if we can easily reduce the cubic to a quadratic bezier curve-
777 int i1_x = base[1].x + ((base[1].x - base[0].x) >> 1);-
778 int i1_y = base[1].y + ((base[1].y - base[0].y) >> 1);-
779 int i2_x = base[2].x + ((base[2].x - base[3].x) >> 1);-
780 int i2_y = base[2].y + ((base[2].y - base[3].y) >> 1);-
781// qDebug() << "checking: i1=" << QPoint(i1_x, i1_y) << " i2=" << QPoint(i2_x, i2_y);-
782 if (qAbs(i1_x - i2_x) <= split_limit && qAbs(i1_y - i2_y) <= split_limit) {
qAbs(i1_x - i2...<= split_limitDescription
TRUEnever evaluated
FALSEnever evaluated
qAbs(i1_y - i2...<= split_limitDescription
TRUEnever evaluated
FALSEnever evaluated
0
783 // got a quadratic bezier curve-
784 TTF_POINT np;-
785 np.x = (i1_x + i2_x) >> 1;-
786 np.y = (i1_y + i2_y) >> 1;-
787 if (try_reduce) {
try_reduceDescription
TRUEnever evaluated
FALSEnever evaluated
0
788 // see if we can optimize out the last onCurve point-
789 int mx = (points->at(points->size() - 2).x + base[2].x) >> 1;-
790 int my = (points->at(points->size() - 2).y + base[2].y) >> 1;-
791 if (qAbs(mx - base[3].x) <= split_limit && qAbs(my = base[3].y) <= split_limit)
qAbs(mx - base...<= split_limitDescription
TRUEnever evaluated
FALSEnever evaluated
qAbs(my = base...<= split_limitDescription
TRUEnever evaluated
FALSEnever evaluated
0
792 points->takeLast();
never executed: points->takeLast();
0
793 try_reduce = false;-
794 }
never executed: end of block
0
795 np.flags = OffCurve;-
796 points->append(np);-
797// qDebug() << " appending offcurve point " << QPoint(np.x, np.y);-
798 base -= 3;-
799 } else {
never executed: end of block
0
800 // need to split-
801// qDebug(" -> splitting");-
802 qint16 a, b, c, d;-
803 base[6].x = base[3].x;-
804 c = base[1].x;-
805 d = base[2].x;-
806 base[1].x = a = ( base[0].x + c ) >> 1;-
807 base[5].x = b = ( base[3].x + d ) >> 1;-
808 c = ( c + d ) >> 1;-
809 base[2].x = a = ( a + c ) >> 1;-
810 base[4].x = b = ( b + c ) >> 1;-
811 base[3].x = ( a + b ) >> 1;-
812-
813 base[6].y = base[3].y;-
814 c = base[1].y;-
815 d = base[2].y;-
816 base[1].y = a = ( base[0].y + c ) >> 1;-
817 base[5].y = b = ( base[3].y + d ) >> 1;-
818 c = ( c + d ) >> 1;-
819 base[2].y = a = ( a + c ) >> 1;-
820 base[4].y = b = ( b + c ) >> 1;-
821 base[3].y = ( a + b ) >> 1;-
822 base += 3;-
823 }
never executed: end of block
0
824 }-
825 p = list[0];-
826 p.flags = OnCurve;-
827 break;
never executed: break;
0
828 }-
829 case QPainterPath::CurveToDataElement:
never executed: case QPainterPath::CurveToDataElement:
0
830 Q_ASSERT(false);-
831 break;
never executed: break;
0
832 }-
833// qDebug() << " appending oncurve point " << QPoint(p.x, p.y);-
834 points->append(p);-
835 }
never executed: end of block
0
836 int start = endPoints->size() ? endPoints->at(endPoints->size()-1) + 1 : 0;
endPoints->size()Description
TRUEnever evaluated
FALSEnever evaluated
0
837 int end = points->size() - 1;-
838 if (points->at(end).x == points->at(start).x
points->at(end...s->at(start).xDescription
TRUEnever evaluated
FALSEnever evaluated
0
839 && points->at(end).y == points->at(start).y)
points->at(end...s->at(start).yDescription
TRUEnever evaluated
FALSEnever evaluated
0
840 points->takeLast();
never executed: points->takeLast();
0
841 endPoints->append(points->size() - 1);-
842}
never executed: end of block
0
843-
844static void getBounds(const QVector<TTF_POINT> &points, qint16 *xmin, qint16 *xmax, qint16 *ymin, qint16 *ymax)-
845{-
846 *xmin = points.at(0).x;-
847 *xmax = *xmin;-
848 *ymin = points.at(0).y;-
849 *ymax = *ymin;-
850-
851 for (int i = 1; i < points.size(); ++i) {
i < points.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
852 *xmin = qMin(*xmin, points.at(i).x);-
853 *xmax = qMax(*xmax, points.at(i).x);-
854 *ymin = qMin(*ymin, points.at(i).y);-
855 *ymax = qMax(*ymax, points.at(i).y);-
856 }
never executed: end of block
0
857}
never executed: end of block
0
858-
859static int convertToRelative(QVector<TTF_POINT> *points)-
860{-
861 // convert points to relative and setup flags-
862// qDebug("relative points:");-
863 qint16 prev_x = 0;-
864 qint16 prev_y = 0;-
865 int point_array_size = 0;-
866 for (int i = 0; i < points->size(); ++i) {
i < points->size()Description
TRUEnever evaluated
FALSEnever evaluated
0
867 const int x = points->at(i).x;-
868 const int y = points->at(i).y;-
869 TTF_POINT rel;-
870 rel.x = x - prev_x;-
871 rel.y = y - prev_y;-
872 rel.flags = points->at(i).flags;-
873 Q_ASSERT(rel.flags < 2);-
874 if (!rel.x) {
!rel.xDescription
TRUEnever evaluated
FALSEnever evaluated
0
875 rel.flags |= XSame;-
876 } else if (rel.x > 0 && rel.x < 256) {
never executed: end of block
rel.x > 0Description
TRUEnever evaluated
FALSEnever evaluated
rel.x < 256Description
TRUEnever evaluated
FALSEnever evaluated
0
877 rel.flags |= XShortVector|XShortPositive;-
878 point_array_size++;-
879 } else if (rel.x < 0 && rel.x > -256) {
never executed: end of block
rel.x < 0Description
TRUEnever evaluated
FALSEnever evaluated
rel.x > -256Description
TRUEnever evaluated
FALSEnever evaluated
0
880 rel.flags |= XShortVector;-
881 rel.x = -rel.x;-
882 point_array_size++;-
883 } else {
never executed: end of block
0
884 point_array_size += 2;-
885 }
never executed: end of block
0
886 if (!rel.y) {
!rel.yDescription
TRUEnever evaluated
FALSEnever evaluated
0
887 rel.flags |= YSame;-
888 } else if (rel.y > 0 && rel.y < 256) {
never executed: end of block
rel.y > 0Description
TRUEnever evaluated
FALSEnever evaluated
rel.y < 256Description
TRUEnever evaluated
FALSEnever evaluated
0
889 rel.flags |= YShortVector|YShortPositive;-
890 point_array_size++;-
891 } else if (rel.y < 0 && rel.y > -256) {
never executed: end of block
rel.y < 0Description
TRUEnever evaluated
FALSEnever evaluated
rel.y > -256Description
TRUEnever evaluated
FALSEnever evaluated
0
892 rel.flags |= YShortVector;-
893 rel.y = -rel.y;-
894 point_array_size++;-
895 } else {
never executed: end of block
0
896 point_array_size += 2;-
897 }
never executed: end of block
0
898 (*points)[i] = rel;-
899// #define toString(x) ((rel.flags & x) ? #x : "")-
900// qDebug() << " " << QPoint(rel.x, rel.y) << "flags="-
901// << toString(OnCurve) << toString(XShortVector)-
902// << (rel.flags & XShortVector ? toString(XShortPositive) : toString(XSame))-
903// << toString(YShortVector)-
904// << (rel.flags & YShortVector ? toString(YShortPositive) : toString(YSame));-
905-
906 prev_x = x;-
907 prev_y = y;-
908 }
never executed: end of block
0
909 return point_array_size;
never executed: return point_array_size;
0
910}-
911-
912static void getGlyphData(QTtfGlyph *glyph, const QVector<TTF_POINT> &points, const QVector<int> &endPoints, int point_array_size)-
913{-
914 const int max_size = 5*sizeof(qint16) // header-
915 + endPoints.size()*sizeof(quint16) // end points of contours-
916 + sizeof(quint16) // instruction length == 0-
917 + points.size()*(1) // flags-
918 + point_array_size; // coordinates-
919-
920 glyph->data.resize(max_size);-
921-
922 QTtfStream s(glyph->data);-
923 s << qint16(endPoints.size())-
924 << glyph->xMin << glyph->yMin << glyph->xMax << glyph->yMax;-
925-
926 for (int i = 0; i < endPoints.size(); ++i)
i < endPoints.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
927 s << quint16(endPoints.at(i));
never executed: s << quint16(endPoints.at(i));
0
928 s << quint16(0); // instruction length-
929-
930 // emit flags-
931 for (int i = 0; i < points.size(); ++i)
i < points.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
932 s << quint8(points.at(i).flags);
never executed: s << quint8(points.at(i).flags);
0
933 // emit points-
934 for (int i = 0; i < points.size(); ++i) {
i < points.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
935 quint8 flags = points.at(i).flags;-
936 qint16 x = points.at(i).x;-
937-
938 if (flags & XShortVector)
flags & XShortVectorDescription
TRUEnever evaluated
FALSEnever evaluated
0
939 s << quint8(x);
never executed: s << quint8(x);
0
940 else if (!(flags & XSame))
!(flags & XSame)Description
TRUEnever evaluated
FALSEnever evaluated
0
941 s << qint16(x);
never executed: s << qint16(x);
0
942 }
never executed: end of block
0
943 for (int i = 0; i < points.size(); ++i) {
i < points.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
944 quint8 flags = points.at(i).flags;-
945 qint16 y = points.at(i).y;-
946-
947 if (flags & YShortVector)
flags & YShortVectorDescription
TRUEnever evaluated
FALSEnever evaluated
0
948 s << quint8(y);
never executed: s << quint8(y);
0
949 else if (!(flags & YSame))
!(flags & YSame)Description
TRUEnever evaluated
FALSEnever evaluated
0
950 s << qint16(y);
never executed: s << qint16(y);
0
951 }
never executed: end of block
0
952-
953// qDebug() << "offset=" << s.offset() << "max_size=" << max_size << "point_array_size=" << point_array_size;-
954 Q_ASSERT(s.offset() == max_size);-
955-
956 glyph->numContours = endPoints.size();-
957 glyph->numPoints = points.size();-
958}
never executed: end of block
0
959-
960static QTtfGlyph generateGlyph(int index, const QPainterPath &path, qreal advance, qreal lsb, qreal ppem)-
961{-
962 QVector<TTF_POINT> points;-
963 QVector<int> endPoints;-
964 QTtfGlyph glyph;-
965 glyph.index = index;-
966 glyph.advanceWidth = qRound(advance * 2048. / ppem);-
967 glyph.lsb = qRound(lsb * 2048. / ppem);-
968-
969 if (!path.elementCount()) {
!path.elementCount()Description
TRUEnever evaluated
FALSEnever evaluated
0
970 //qDebug("glyph %d is empty", index);-
971 lsb = 0;-
972 glyph.xMin = glyph.xMax = glyph.yMin = glyph.yMax = 0;-
973 glyph.numContours = 0;-
974 glyph.numPoints = 0;-
975 return glyph;
never executed: return glyph;
0
976 }-
977-
978 convertPath(path, &points, &endPoints, ppem);-
979-
980// qDebug() << "number of contours=" << endPoints.size();-
981// for (int i = 0; i < points.size(); ++i)-
982// qDebug() << " point[" << i << "] = " << QPoint(points.at(i).x, points.at(i).y) << " flags=" << points.at(i).flags;-
983// qDebug("endPoints:");-
984// for (int i = 0; i < endPoints.size(); ++i)-
985// qDebug() << endPoints.at(i);-
986-
987 getBounds(points, &glyph.xMin, &glyph.xMax, &glyph.yMin, &glyph.yMax);-
988 int point_array_size = convertToRelative(&points);-
989 getGlyphData(&glyph, points, endPoints, point_array_size);-
990 return glyph;
never executed: return glyph;
0
991}-
992-
993static bool operator <(const QTtfGlyph &g1, const QTtfGlyph &g2)-
994{-
995 return g1.index < g2.index;
never executed: return g1.index < g2.index;
0
996}-
997-
998static QVector<QTtfTable> generateGlyphTables(qttf_font_tables &tables, const QVector<QTtfGlyph> &_glyphs)-
999{-
1000 const int max_size_small = 65536*2;-
1001 QVector<QTtfGlyph> glyphs = _glyphs;-
1002 std::sort(glyphs.begin(), glyphs.end());-
1003-
1004 Q_ASSERT(tables.maxp.numGlyphs == glyphs.at(glyphs.size()-1).index + 1);-
1005 int nGlyphs = tables.maxp.numGlyphs;-
1006-
1007 int glyf_size = 0;-
1008 for (int i = 0; i < glyphs.size(); ++i)
i < glyphs.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
1009 glyf_size += (glyphs.at(i).data.size() + 3) & ~3;
never executed: glyf_size += (glyphs.at(i).data.size() + 3) & ~3;
0
1010-
1011 tables.head.indexToLocFormat = glyf_size < max_size_small ? 0 : 1;
glyf_size < max_size_smallDescription
TRUEnever evaluated
FALSEnever evaluated
0
1012 tables.hhea.numberOfHMetrics = nGlyphs;-
1013-
1014 QTtfTable glyf;-
1015 glyf.tag = MAKE_TAG('g', 'l', 'y', 'f');-
1016-
1017 QTtfTable loca;-
1018 loca.tag = MAKE_TAG('l', 'o', 'c', 'a');-
1019 loca.data.resize(glyf_size < max_size_small ? (nGlyphs+1)*sizeof(quint16) : (nGlyphs+1)*sizeof(quint32));-
1020 QTtfStream ls(loca.data);-
1021-
1022 QTtfTable hmtx;-
1023 hmtx.tag = MAKE_TAG('h', 'm', 't', 'x');-
1024 hmtx.data.resize(nGlyphs*4);-
1025 QTtfStream hs(hmtx.data);-
1026-
1027 int pos = 0;-
1028 for (int i = 0; i < nGlyphs; ++i) {
i < nGlyphsDescription
TRUEnever evaluated
FALSEnever evaluated
0
1029 int gpos = glyf.data.size();-
1030 quint16 advance = 0;-
1031 qint16 lsb = 0;-
1032-
1033 if (glyphs[pos].index == i) {
glyphs[pos].index == iDescription
TRUEnever evaluated
FALSEnever evaluated
0
1034 // emit glyph-
1035// qDebug("emitting glyph %d: size=%d", i, glyphs.at(i).data.size());-
1036 glyf.data += glyphs.at(pos).data;-
1037 while (glyf.data.size() & 1)
glyf.data.size() & 1Description
TRUEnever evaluated
FALSEnever evaluated
0
1038 glyf.data.append('\0');
never executed: glyf.data.append('\0');
0
1039 advance = glyphs.at(pos).advanceWidth;-
1040 lsb = glyphs.at(pos).lsb;-
1041 ++pos;-
1042 }
never executed: end of block
0
1043 if (glyf_size < max_size_small) {
glyf_size < max_size_smallDescription
TRUEnever evaluated
FALSEnever evaluated
0
1044 // use short loca format-
1045 ls << quint16(gpos>>1);-
1046 } else {
never executed: end of block
0
1047 // use long loca format-
1048 ls << quint32(gpos);-
1049 }
never executed: end of block
0
1050 hs << advance-
1051 << lsb;-
1052 }
never executed: end of block
0
1053 if (glyf_size < max_size_small) {
glyf_size < max_size_smallDescription
TRUEnever evaluated
FALSEnever evaluated
0
1054 // use short loca format-
1055 ls << quint16(glyf.data.size()>>1);-
1056 } else {
never executed: end of block
0
1057 // use long loca format-
1058 ls << quint32(glyf.data.size());-
1059 }
never executed: end of block
0
1060-
1061 Q_ASSERT(loca.data.size() == ls.offset());-
1062 Q_ASSERT(hmtx.data.size() == hs.offset());-
1063-
1064 QVector<QTtfTable> list;-
1065 list.reserve(3);-
1066 list.append(glyf);-
1067 list.append(loca);-
1068 list.append(hmtx);-
1069 return list;
never executed: return list;
0
1070}-
1071-
1072static bool operator <(const QTtfTable &t1, const QTtfTable &t2)-
1073{-
1074 return t1.tag < t2.tag;
never executed: return t1.tag < t2.tag;
0
1075}-
1076-
1077static QByteArray bindFont(const QVector<QTtfTable>& _tables)-
1078{-
1079 QVector<QTtfTable> tables = _tables;-
1080-
1081 std::sort(tables.begin(), tables.end());-
1082-
1083 QByteArray font;-
1084 const int header_size = sizeof(qint32) + 4*sizeof(quint16);-
1085 const int directory_size = 4*sizeof(quint32)*tables.size();-
1086 font.resize(header_size + directory_size);-
1087-
1088 int log2 = 0;-
1089 int pow = 1;-
1090 int n = tables.size() >> 1;-
1091 while (n) {
nDescription
TRUEnever evaluated
FALSEnever evaluated
0
1092 ++log2;-
1093 pow <<= 1;-
1094 n >>= 1;-
1095 }
never executed: end of block
0
1096-
1097 quint32 head_offset = 0;-
1098 {-
1099 QTtfStream f(font);-
1100// Offset Table-
1101// Type Name Description-
1102// qint32 sfnt version 0x00010000 for version 1.0.-
1103// quint16 numTables Number of tables.-
1104// quint16 searchRange (Maximum power of 2 <= numTables) x 16.-
1105// quint16 entrySelector Log2(maximum power of 2 <= numTables).-
1106// quint16 rangeShift NumTables x 16-searchRange.-
1107 f << qint32(0x00010000)-
1108 << quint16(tables.size())-
1109 << quint16(16*pow)-
1110 << quint16(log2)-
1111 << quint16(16*(tables.size() - pow));-
1112-
1113// Table Directory-
1114// Type Name Description-
1115// quint32 tag 4 -byte identifier.-
1116// quint32 checkSum CheckSum for this table.-
1117// quint32 offset Offset from beginning of TrueType font file.-
1118// quint32 length Length of this table.-
1119 quint32 table_offset = header_size + directory_size;-
1120 for (int i = 0; i < tables.size(); ++i) {
i < tables.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
1121 const QTtfTable &t = tables.at(i);-
1122 const quint32 size = (t.data.size() + 3) & ~3;-
1123 if (t.tag == MAKE_TAG('h', 'e', 'a', 'd'))
t.tag == ( (((...int32)('d')) )Description
TRUEnever evaluated
FALSEnever evaluated
0
1124 head_offset = table_offset;
never executed: head_offset = table_offset;
0
1125 f << t.tag-
1126 << checksum(t.data)-
1127 << table_offset-
1128 << t.data.size();-
1129 table_offset += size;-
1130#define TAG(x) char(t.tag >> 24) << char((t.tag >> 16) & 0xff) << char((t.tag >> 8) & 0xff) << char(t.tag & 0xff)-
1131 //qDebug() << "table " << TAG(t.tag) << "has size " << t.data.size() << "stream at " << f.offset();-
1132 }
never executed: end of block
0
1133 }-
1134 for (int i = 0; i < tables.size(); ++i) {
i < tables.size()Description
TRUEnever evaluated
FALSEnever evaluated
0
1135 const QByteArray &t = tables.at(i).data;-
1136 font += t;-
1137 int s = t.size();-
1138 while (s & 3) { font += '\0'; ++s; }
never executed: end of block
s & 3Description
TRUEnever evaluated
FALSEnever evaluated
0
1139 }
never executed: end of block
0
1140-
1141 if (!head_offset) {
!head_offsetDescription
TRUEnever evaluated
FALSEnever evaluated
0
1142 qWarning("QFontSubset: Font misses 'head' table");-
1143 return QByteArray();
never executed: return QByteArray();
0
1144 }-
1145-
1146 // calculate the fonts checksum and qToBigEndian into 'head's checksum_adjust-
1147 quint32 checksum_adjust = 0xB1B0AFBA - checksum(font);-
1148 qToBigEndian(checksum_adjust, font.data() + head_offset + 8);-
1149-
1150 return font;
never executed: return font;
0
1151}-
1152-
1153-
1154/*-
1155 PDF requires the following tables:-
1156-
1157 head, hhea, loca, maxp, cvt , prep, glyf, hmtx, fpgm-
1158-
1159 This means we don't have to add a os/2, post or name table. cvt , prep and fpgm could be empty-
1160 if really required.-
1161*/-
1162-
1163QByteArray QFontSubset::toTruetype() const-
1164{-
1165 qttf_font_tables font;-
1166 memset(&font, 0, sizeof(qttf_font_tables));-
1167-
1168 qreal ppem = fontEngine->fontDef.pixelSize;-
1169#define TO_TTF(x) qRound(x * 2048. / ppem)-
1170-
1171 QFontEngine::Properties properties = fontEngine->properties();-
1172 // initialize some stuff needed in createWidthArray-
1173 emSquare = 2048;-
1174 widths.resize(nGlyphs());-
1175-
1176 // head table-
1177 font.head.font_revision = 0x00010000;-
1178 font.head.flags = (1 << 2) | (1 << 4);-
1179 font.head.created = 0; // ###-
1180 font.head.modified = 0; // ###-
1181 font.head.xMin = SHRT_MAX;-
1182 font.head.xMax = SHRT_MIN;-
1183 font.head.yMin = SHRT_MAX;-
1184 font.head.yMax = SHRT_MIN;-
1185 font.head.macStyle = (fontEngine->fontDef.weight > QFont::Normal) ? 1 : 0;
(fontEngine->f...QFont::Normal)Description
TRUEnever evaluated
FALSEnever evaluated
0
1186 font.head.macStyle |= (fontEngine->fontDef.styleHint != QFont::StyleNormal) ? 1 : 0;
(fontEngine->f...::StyleNormal)Description
TRUEnever evaluated
FALSEnever evaluated
0
1187-
1188 // hhea table-
1189 font.hhea.ascender = qRound(properties.ascent);-
1190 font.hhea.descender = -qRound(properties.descent);-
1191 font.hhea.lineGap = qRound(properties.leading);-
1192 font.hhea.maxAdvanceWidth = TO_TTF(fontEngine->maxCharWidth());-
1193 font.hhea.minLeftSideBearing = TO_TTF(fontEngine->minLeftBearing());-
1194 font.hhea.minRightSideBearing = TO_TTF(fontEngine->minRightBearing());-
1195 font.hhea.xMaxExtent = SHRT_MIN;-
1196-
1197 font.maxp.numGlyphs = 0;-
1198 font.maxp.maxPoints = 0;-
1199 font.maxp.maxContours = 0;-
1200 font.maxp.maxCompositePoints = 0;-
1201 font.maxp.maxCompositeContours = 0;-
1202 font.maxp.maxComponentElements = 0;-
1203 font.maxp.maxComponentDepth = 0;-
1204 const int numGlyphs = nGlyphs();-
1205 font.maxp.numGlyphs = numGlyphs;-
1206 QVector<QTtfGlyph> glyphs;-
1207 glyphs.reserve(numGlyphs);-
1208-
1209 uint sumAdvances = 0;-
1210 for (int i = 0; i < numGlyphs; ++i) {
i < numGlyphsDescription
TRUEnever evaluated
FALSEnever evaluated
0
1211 glyph_t g = glyph_indices.at(i);-
1212 QPainterPath path;-
1213 glyph_metrics_t metric;-
1214 fontEngine->getUnscaledGlyph(g, &path, &metric);-
1215 if (noEmbed) {
noEmbedDescription
TRUEnever evaluated
FALSEnever evaluated
0
1216 path = QPainterPath();-
1217 if (g == 0)
g == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
1218 path.addRect(QRectF(0, 0, 1000, 1000));
never executed: path.addRect(QRectF(0, 0, 1000, 1000));
0
1219 }
never executed: end of block
0
1220 QTtfGlyph glyph = generateGlyph(i, path, metric.xoff.toReal(), metric.x.toReal(), properties.emSquare.toReal());-
1221-
1222 font.head.xMin = qMin(font.head.xMin, glyph.xMin);-
1223 font.head.xMax = qMax(font.head.xMax, glyph.xMax);-
1224 font.head.yMin = qMin(font.head.yMin, glyph.yMin);-
1225 font.head.yMax = qMax(font.head.yMax, glyph.yMax);-
1226-
1227 font.hhea.xMaxExtent = qMax(font.hhea.xMaxExtent, (qint16)(glyph.lsb + glyph.xMax - glyph.xMin));-
1228-
1229 font.maxp.maxPoints = qMax(font.maxp.maxPoints, glyph.numPoints);-
1230 font.maxp.maxContours = qMax(font.maxp.maxContours, glyph.numContours);-
1231-
1232 if (glyph.xMax > glyph.xMin)
glyph.xMax > glyph.xMinDescription
TRUEnever evaluated
FALSEnever evaluated
0
1233 sumAdvances += glyph.xMax - glyph.xMin;
never executed: sumAdvances += glyph.xMax - glyph.xMin;
0
1234-
1235// qDebug("adding glyph %d size=%d", glyph.index, glyph.data.size());-
1236 glyphs.append(glyph);-
1237 widths[i] = glyph.advanceWidth;-
1238 }
never executed: end of block
0
1239-
1240-
1241 QVector<QTtfTable> tables = generateGlyphTables(font, glyphs);-
1242 tables.append(generateHead(font.head));-
1243 tables.append(generateHhea(font.hhea));-
1244 tables.append(generateMaxp(font.maxp));-
1245 // name-
1246 QTtfTable name_table;-
1247 name_table.tag = MAKE_TAG('n', 'a', 'm', 'e');-
1248 if (!noEmbed)
!noEmbedDescription
TRUEnever evaluated
FALSEnever evaluated
0
1249 name_table.data = fontEngine->getSfntTable(name_table.tag);
never executed: name_table.data = fontEngine->getSfntTable(name_table.tag);
0
1250 if (name_table.data.isEmpty()) {
name_table.data.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
1251 qttf_name_table name;-
1252 if (noEmbed)
noEmbedDescription
TRUEnever evaluated
FALSEnever evaluated
0
1253 name.copyright = QLatin1String("Fake font");
never executed: name.copyright = QLatin1String("Fake font");
0
1254 else-
1255 name.copyright = QLatin1String(properties.copyright);
never executed: name.copyright = QLatin1String(properties.copyright);
0
1256 name.family = fontEngine->fontDef.family;-
1257 name.subfamily = QLatin1String("Regular"); // ######-
1258 name.postscript_name = QLatin1String(properties.postscriptName);-
1259 name_table = generateName(name);-
1260 }
never executed: end of block
0
1261 tables.append(name_table);-
1262-
1263 if (!noEmbed) {
!noEmbedDescription
TRUEnever evaluated
FALSEnever evaluated
0
1264 QTtfTable os2;-
1265 os2.tag = MAKE_TAG('O', 'S', '/', '2');-
1266 os2.data = fontEngine->getSfntTable(os2.tag);-
1267 if (!os2.data.isEmpty())
!os2.data.isEmpty()Description
TRUEnever evaluated
FALSEnever evaluated
0
1268 tables.append(os2);
never executed: tables.append(os2);
0
1269 }
never executed: end of block
0
1270-
1271 return bindFont(tables);
never executed: return bindFont(tables);
0
1272}-
1273-
1274QT_END_NAMESPACE-
Source codeSwitch to Preprocessed file

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