Context Navigation

source: trunk/src/gui/text/qfontdatabase_win.cpp@ 605

Last change on this file since 605 was 561, checked in by Dmitry A. Kuminov, 15 years ago
trunk: Merged in qt 4.6.1 sources.
File size: 38.6 KB

Line
1	/****************************************************************************
2	**
3	** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4	** All rights reserved.
5	** Contact: Nokia Corporation ([email protected])
6	**
7	** This file is part of the QtGui module of the Qt Toolkit.
8	**
9	** $QT_BEGIN_LICENSE:LGPL$
10	** Commercial Usage
11	** Licensees holding valid Qt Commercial licenses may use this file in
12	** accordance with the Qt Commercial License Agreement provided with the
13	** Software or, alternatively, in accordance with the terms contained in
14	** a written agreement between you and Nokia.
15	**
16	** GNU Lesser General Public License Usage
17	** Alternatively, this file may be used under the terms of the GNU Lesser
18	** General Public License version 2.1 as published by the Free Software
19	** Foundation and appearing in the file LICENSE.LGPL included in the
20	** packaging of this file. Please review the following information to
21	** ensure the GNU Lesser General Public License version 2.1 requirements
22	** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23	**
24	** In addition, as a special exception, Nokia gives you certain additional
25	** rights. These rights are described in the Nokia Qt LGPL Exception
26	** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27	**
28	** GNU General Public License Usage
29	** Alternatively, this file may be used under the terms of the GNU
30	** General Public License version 3.0 as published by the Free Software
31	** Foundation and appearing in the file LICENSE.GPL included in the
32	** packaging of this file. Please review the following information to
33	** ensure the GNU General Public License version 3.0 requirements will be
34	** met: http://www.gnu.org/copyleft/gpl.html.
35	**
36	** If you have questions regarding the use of this file, please contact
37	** Nokia at [email protected].
38	** $QT_END_LICENSE$
39	**
40	****************************************************************************/
41
42	#include "qt_windows.h"
43	#include <qmath.h>
44	#include <private/qapplication_p.h>
45	#include "qfont_p.h"
46	#include "qfontengine_p.h"
47	#include "qpaintdevice.h"
48	#include "qlibrary.h"
49	#include "qabstractfileengine.h"
50	#include "qendian.h"
51
52	#ifdef Q_OS_WINCE
53	# include <QTemporaryFile>
54	#endif
55
56	QT_BEGIN_NAMESPACE
57
58	extern HDC shared_dc(); // common dc for all fonts
59
60	#ifdef MAKE_TAG
61	#undef MAKE_TAG
62	#endif
63	// GetFontData expects the tags in little endian ;(
64	#define MAKE_TAG(ch1, ch2, ch3, ch4) (\
65	(((quint32)(ch4)) << 24) \| \
66	(((quint32)(ch3)) << 16) \| \
67	(((quint32)(ch2)) << 8) \| \
68	((quint32)(ch1)) \
69	)
70
71	static HFONT stock_sysfont = 0;
72
73	static bool localizedName(const QString &name)
74	{
75	const QChar *c = name.unicode();
76	for(int i = 0; i < name.length(); ++i) {
77	if(c[i].unicode() >= 0x100)
78	return true;
79	}
80	return false;
81	}
82
83	static inline quint16 getUShort(const unsigned char *p)
84	{
85	quint16 val;
86	val = *p++ << 8;
87	val \|= *p;
88
89	return val;
90	}
91
92	static QString getEnglishName(const uchar *table, quint32 bytes)
93	{
94	QString i18n_name;
95	enum {
96	NameRecordSize = 12,
97	FamilyId = 1,
98	MS_LangIdEnglish = 0x009
99	};
100
101	// get the name table
102	quint16 count;
103	quint16 string_offset;
104	const unsigned char *names;
105
106	int microsoft_id = -1;
107	int apple_id = -1;
108	int unicode_id = -1;
109
110	if(getUShort(table) != 0)
111	goto error;
112
113	count = getUShort(table+2);
114	string_offset = getUShort(table+4);
115	names = table + 6;
116
117	if(string_offset >= bytes \|\| 6 + count*NameRecordSize > string_offset)
118	goto error;
119
120	for(int i = 0; i < count; ++i) {
121	// search for the correct name entry
122
123	quint16 platform_id = getUShort(names + i*NameRecordSize);
124	quint16 encoding_id = getUShort(names + 2 + i*NameRecordSize);
125	quint16 language_id = getUShort(names + 4 + i*NameRecordSize);
126	quint16 name_id = getUShort(names + 6 + i*NameRecordSize);
127
128	if(name_id != FamilyId)
129	continue;
130
131	enum {
132	PlatformId_Unicode = 0,
133	PlatformId_Apple = 1,
134	PlatformId_Microsoft = 3
135	};
136
137	quint16 length = getUShort(names + 8 + i*NameRecordSize);
138	quint16 offset = getUShort(names + 10 + i*NameRecordSize);
139	if(DWORD(string_offset + offset + length) >= bytes)
140	continue;
141
142	if ((platform_id == PlatformId_Microsoft
143	&& (encoding_id == 0 \|\| encoding_id == 1))
144	&& (language_id & 0x3ff) == MS_LangIdEnglish
145	&& microsoft_id == -1)
146	microsoft_id = i;
147	// not sure if encoding id 4 for Unicode is utf16 or ucs4...
148	else if(platform_id == PlatformId_Unicode && encoding_id < 4 && unicode_id == -1)
149	unicode_id = i;
150	else if(platform_id == PlatformId_Apple && encoding_id == 0 && language_id == 0)
151	apple_id = i;
152	}
153	{
154	bool unicode = false;
155	int id = -1;
156	if(microsoft_id != -1) {
157	id = microsoft_id;
158	unicode = true;
159	} else if(apple_id != -1) {
160	id = apple_id;
161	unicode = false;
162	} else if (unicode_id != -1) {
163	id = unicode_id;
164	unicode = true;
165	}
166	if(id != -1) {
167	quint16 length = getUShort(names + 8 + id*NameRecordSize);
168	quint16 offset = getUShort(names + 10 + id*NameRecordSize);
169	if(unicode) {
170	// utf16
171
172	length /= 2;
173	i18n_name.resize(length);
174	QChar uc = (QChar ) i18n_name.unicode();
175	const unsigned char *string = table + string_offset + offset;
176	for(int i = 0; i < length; ++i)
177	uc[i] = getUShort(string + 2*i);
178	} else {
179	// Apple Roman
180
181	i18n_name.resize(length);
182	QChar uc = (QChar ) i18n_name.unicode();
183	const unsigned char *string = table + string_offset + offset;
184	for(int i = 0; i < length; ++i)
185	uc[i] = QLatin1Char(string[i]);
186	}
187	}
188	}
189	error:
190	//qDebug("got i18n name of '%s' for font '%s'", i18n_name.latin1(), familyName.toLocal8Bit().data());
191	return i18n_name;
192	}
193
194	static QString getEnglishName(const QString &familyName)
195	{
196	QString i18n_name;
197
198	HDC hdc = GetDC( 0 );
199	LOGFONT lf;
200	memset(&lf, 0, sizeof(LOGFONT));
201	memcpy(lf.lfFaceName, familyName.utf16(), qMin(LF_FACESIZE, familyName.length()) * sizeof(wchar_t));
202	lf.lfCharSet = DEFAULT_CHARSET;
203	HFONT hfont = CreateFontIndirect(&lf);
204
205	if(!hfont) {
206	ReleaseDC(0, hdc);
207	return QString();
208	}
209
210	HGDIOBJ oldobj = SelectObject( hdc, hfont );
211
212	const DWORD name_tag = MAKE_TAG( 'n', 'a', 'm', 'e' );
213
214	// get the name table
215	unsigned char *table = 0;
216
217	DWORD bytes = GetFontData( hdc, name_tag, 0, 0, 0 );
218	if ( bytes == GDI_ERROR ) {
219	// ### Unused variable
220	/* int err = GetLastError(); */
221	goto error;
222	}
223
224	table = new unsigned char[bytes];
225	GetFontData(hdc, name_tag, 0, table, bytes);
226	if ( bytes == GDI_ERROR )
227	goto error;
228
229	i18n_name = getEnglishName(table, bytes);
230	error:
231	delete [] table;
232	SelectObject( hdc, oldobj );
233	DeleteObject( hfont );
234	ReleaseDC( 0, hdc );
235
236	//qDebug("got i18n name of '%s' for font '%s'", i18n_name.latin1(), familyName.toLocal8Bit().data());
237	return i18n_name;
238	}
239
240	static
241	void addFontToDatabase(QString familyName, const QString &scriptName,
242	TEXTMETRIC *textmetric,
243	const FONTSIGNATURE *signature,
244	int type)
245	{
246	const int script = -1;
247	const QString foundryName;
248	Q_UNUSED(script);
249
250	bool italic = false;
251	int weight;
252	bool fixed;
253	bool ttf;
254	bool scalable;
255	int size;
256
257	// QString escript = QString::fromWCharArray(f->elfScript);
258	// qDebug("script=%s", escript.latin1());
259
260	NEWTEXTMETRIC tm = (NEWTEXTMETRIC )textmetric;
261	fixed = !(tm->tmPitchAndFamily & TMPF_FIXED_PITCH);
262	ttf = (tm->tmPitchAndFamily & TMPF_TRUETYPE);
263	scalable = tm->tmPitchAndFamily & (TMPF_VECTOR\|TMPF_TRUETYPE);
264	size = scalable ? SMOOTH_SCALABLE : tm->tmHeight;
265	italic = tm->tmItalic;
266	weight = tm->tmWeight;
267
268	// the "@family" fonts are just the same as "family". Ignore them.
269	if (familyName[0] != QLatin1Char('@') && !familyName.startsWith(QLatin1String("WST_"))) {
270	QtFontStyle::Key styleKey;
271	styleKey.style = italic ? QFont::StyleItalic : QFont::StyleNormal;
272	if (weight < 400)
273	styleKey.weight = QFont::Light;
274	else if (weight < 600)
275	styleKey.weight = QFont::Normal;
276	else if (weight < 700)
277	styleKey.weight = QFont::DemiBold;
278	else if (weight < 800)
279	styleKey.weight = QFont::Bold;
280	else
281	styleKey.weight = QFont::Black;
282
283	QtFontFamily *family = privateDb()->family(familyName, true);
284
285	if(ttf && localizedName(familyName) && family->english_name.isEmpty())
286	family->english_name = getEnglishName(familyName);
287
288	QtFontFoundry *foundry = family->foundry(foundryName, true);
289	QtFontStyle *style = foundry->style(styleKey, true);
290	style->smoothScalable = scalable;
291	style->pixelSize( size, TRUE);
292
293	// add fonts windows can generate for us:
294	if (styleKey.weight <= QFont::DemiBold) {
295	QtFontStyle::Key key(styleKey);
296	key.weight = QFont::Bold;
297	QtFontStyle *style = foundry->style(key, true);
298	style->smoothScalable = scalable;
299	style->pixelSize( size, TRUE);
300	}
301	if (styleKey.style != QFont::StyleItalic) {
302	QtFontStyle::Key key(styleKey);
303	key.style = QFont::StyleItalic;
304	QtFontStyle *style = foundry->style(key, true);
305	style->smoothScalable = scalable;
306	style->pixelSize( size, TRUE);
307	}
308	if (styleKey.weight <= QFont::DemiBold && styleKey.style != QFont::StyleItalic) {
309	QtFontStyle::Key key(styleKey);
310	key.weight = QFont::Bold;
311	key.style = QFont::StyleItalic;
312	QtFontStyle *style = foundry->style(key, true);
313	style->smoothScalable = scalable;
314	style->pixelSize( size, TRUE);
315	}
316
317	family->fixedPitch = fixed;
318
319	if (!family->writingSystemCheck && type & TRUETYPE_FONTTYPE) {
320	quint32 unicodeRange[4] = {
321	signature->fsUsb[0], signature->fsUsb[1],
322	signature->fsUsb[2], signature->fsUsb[3]
323	};
324	#ifdef Q_WS_WINCE
325	if (signature->fsUsb[0] == 0) {
326	// If the unicode ranges bit mask is zero then
327	// EnumFontFamiliesEx failed to determine it properly.
328	// In this case we just pretend that the font supports all languages.
329	unicodeRange[0] = 0xbfffffff; // second most significant bit must be zero
330	unicodeRange[1] = 0xffffffff;
331	unicodeRange[2] = 0xffffffff;
332	unicodeRange[3] = 0xffffffff;
333	}
334	#endif
335	quint32 codePageRange[2] = {
336	signature->fsCsb[0], signature->fsCsb[1]
337	};
338	QList<QFontDatabase::WritingSystem> systems = determineWritingSystemsFromTrueTypeBits(unicodeRange, codePageRange);
339	for (int i = 0; i < systems.count(); ++i)
340	family->writingSystems[systems.at(i)] = QtFontFamily::Supported;
341	} else if (!family->writingSystemCheck) {
342	//qDebug("family='%s' script=%s", family->name.latin1(), script.latin1());
343	if (scriptName == QLatin1String("Western")
344	\|\| scriptName == QLatin1String("Baltic")
345	\|\| scriptName == QLatin1String("Central European")
346	\|\| scriptName == QLatin1String("Turkish")
347	\|\| scriptName == QLatin1String("Vietnamese"))
348	family->writingSystems[QFontDatabase::Latin] = QtFontFamily::Supported;
349	else if (scriptName == QLatin1String("Thai"))
350	family->writingSystems[QFontDatabase::Thai] = QtFontFamily::Supported;
351	else if (scriptName == QLatin1String("Symbol")
352	\|\| scriptName == QLatin1String("Other"))
353	family->writingSystems[QFontDatabase::Symbol] = QtFontFamily::Supported;
354	else if (scriptName == QLatin1String("OEM/Dos"))
355	family->writingSystems[QFontDatabase::Latin] = QtFontFamily::Supported;
356	else if (scriptName == QLatin1String("CHINESE_GB2312"))
357	family->writingSystems[QFontDatabase::SimplifiedChinese] = QtFontFamily::Supported;
358	else if (scriptName == QLatin1String("CHINESE_BIG5"))
359	family->writingSystems[QFontDatabase::TraditionalChinese] = QtFontFamily::Supported;
360	else if (scriptName == QLatin1String("Cyrillic"))
361	family->writingSystems[QFontDatabase::Cyrillic] = QtFontFamily::Supported;
362	else if (scriptName == QLatin1String("Hangul"))
363	family->writingSystems[QFontDatabase::Korean] = QtFontFamily::Supported;
364	else if (scriptName == QLatin1String("Hebrew"))
365	family->writingSystems[QFontDatabase::Hebrew] = QtFontFamily::Supported;
366	else if (scriptName == QLatin1String("Greek"))
367	family->writingSystems[QFontDatabase::Greek] = QtFontFamily::Supported;
368	else if (scriptName == QLatin1String("Japanese"))
369	family->writingSystems[QFontDatabase::Japanese] = QtFontFamily::Supported;
370	else if (scriptName == QLatin1String("Arabic"))
371	family->writingSystems[QFontDatabase::Arabic] = QtFontFamily::Supported;
372	}
373	}
374	}
375
376	static
377	int CALLBACK
378	storeFont(ENUMLOGFONTEX* f, NEWTEXTMETRICEX textmetric, int type, LPARAM /p*/)
379	{
380	QString familyName = QString::fromWCharArray(f->elfLogFont.lfFaceName);
381	QString script = QString::fromWCharArray(f->elfScript);
382
383	FONTSIGNATURE signature = textmetric->ntmFontSig;
384
385	// NEWTEXTMETRICEX is a NEWTEXTMETRIC, which according to the documentation is
386	// identical to a TEXTMETRIC except for the last four members, which we don't use
387	// anyway
388	addFontToDatabase(familyName, script, (TEXTMETRIC *)textmetric, &signature, type);
389	// keep on enumerating
390	return 1;
391	}
392
393	static
394	void populate_database(const QString& fam)
395	{
396	QFontDatabasePrivate *d = privateDb();
397	if (!d)
398	return;
399
400	QtFontFamily *family = 0;
401	if(!fam.isEmpty()) {
402	family = d->family(fam);
403	if(family && family->loaded)
404	return;
405	} else if (d->count) {
406	return;
407	}
408
409	HDC dummy = GetDC(0);
410
411	LOGFONT lf;
412	lf.lfCharSet = DEFAULT_CHARSET;
413	if (fam.isNull()) {
414	lf.lfFaceName[0] = 0;
415	} else {
416	memcpy(lf.lfFaceName, fam.utf16(), sizeof(wchar_t) * qMin(fam.length() + 1, 32)); // 32 = Windows hard-coded
417	}
418	lf.lfPitchAndFamily = 0;
419
420	EnumFontFamiliesEx(dummy, &lf,
421	(FONTENUMPROC)storeFont, (LPARAM)privateDb(), 0);
422
423	ReleaseDC(0, dummy);
424
425	for (int i = 0; i < d->applicationFonts.count(); ++i) {
426	QFontDatabasePrivate::ApplicationFont fnt = d->applicationFonts.at(i);
427	if (!fnt.memoryFont)
428	continue;
429	for (int j = 0; j < fnt.families.count(); ++j) {
430	const QString familyName = fnt.families.at(j);
431	HDC hdc = GetDC(0);
432	LOGFONT lf;
433	memset(&lf, 0, sizeof(LOGFONT));
434	memcpy(lf.lfFaceName, familyName.utf16(), sizeof(wchar_t) * qMin(LF_FACESIZE, familyName.size()));
435	lf.lfCharSet = DEFAULT_CHARSET;
436	HFONT hfont = CreateFontIndirect(&lf);
437	HGDIOBJ oldobj = SelectObject(hdc, hfont);
438
439	TEXTMETRIC textMetrics;
440	GetTextMetrics(hdc, &textMetrics);
441
442	addFontToDatabase(familyName, QString(),
443	&textMetrics,
444	&fnt.signatures.at(j),
445	TRUETYPE_FONTTYPE);
446
447	SelectObject(hdc, oldobj);
448	DeleteObject(hfont);
449	ReleaseDC(0, hdc);
450	}
451	}
452
453	if(!fam.isEmpty()) {
454	family = d->family(fam);
455	if(family) {
456	if(!family->writingSystemCheck) {
457	}
458	family->loaded = true;
459	}
460	}
461	}
462
463	static void initializeDb()
464	{
465	QFontDatabasePrivate *db = privateDb();
466	if (!db \|\| db->count)
467	return;
468
469	populate_database(QString());
470
471	#ifdef QFONTDATABASE_DEBUG
472	// print the database
473	for (int f = 0; f < db->count; f++) {
474	QtFontFamily *family = db->families[f];
475	qDebug(" %s: %p", qPrintable(family->name), family);
476	populate_database(family->name);
477
478	#if 0
479	qDebug(" scripts supported:");
480	for (int i = 0; i < QUnicodeTables::ScriptCount; i++)
481	if(family->writingSystems[i] & QtFontFamily::Supported)
482	qDebug(" %d", i);
483	for (int fd = 0; fd < family->count; fd++) {
484	QtFontFoundry *foundry = family->foundries[fd];
485	qDebug(" %s", foundry->name.latin1());
486	for (int s = 0; s < foundry->count; s++) {
487	QtFontStyle *style = foundry->styles[s];
488	qDebug(" style: style=%d weight=%d smooth=%d", style->key.style,
489	style->key.weight, style->smoothScalable );
490	if(!style->smoothScalable) {
491	for(int i = 0; i < style->count; ++i) {
492	qDebug(" %d", style->pixelSizes[i].pixelSize);
493	}
494	}
495	}
496	}
497	#endif
498	}
499	#endif // QFONTDATABASE_DEBUG
500
501	}
502
503	static inline void load(const QString &family = QString(), int = -1)
504	{
505	populate_database(family);
506	}
507
508
509
510
511
512	// --------------------------------------------------------------------------------------
513	// font loader
514	// --------------------------------------------------------------------------------------
515
516
517
518	static void initFontInfo(QFontEngineWin fe, const QFontDef &request, const QFontPrivate fp)
519	{
520	fe->fontDef = request; // most settings are equal
521
522	HDC dc = ((request.styleStrategy & QFont::PreferDevice) && fp->hdc) ? fp->hdc : shared_dc();
523	SelectObject(dc, fe->hfont);
524	wchar_t n[64];
525	GetTextFace(dc, 64, n);
526	fe->fontDef.family = QString::fromWCharArray(n);
527	fe->fontDef.fixedPitch = !(fe->tm.tmPitchAndFamily & TMPF_FIXED_PITCH);
528	if (fe->fontDef.pointSize < 0) {
529	fe->fontDef.pointSize = fe->fontDef.pixelSize * 72. / fp->dpi;
530	} else if (fe->fontDef.pixelSize == -1) {
531	fe->fontDef.pixelSize = qRound(fe->fontDef.pointSize * fp->dpi / 72.);
532	}
533	}
534
535
536	static const char *other_tryFonts[] = {
537	"Arial",
538	"MS UI Gothic",
539	"Gulim",
540	"SimSun",
541	"PMingLiU",
542	"Arial Unicode MS",
543	0
544	};
545
546	static const char *jp_tryFonts [] = {
547	"MS UI Gothic",
548	"Arial",
549	"Gulim",
550	"SimSun",
551	"PMingLiU",
552	"Arial Unicode MS",
553	0
554	};
555
556	static const char *ch_CN_tryFonts [] = {
557	"SimSun",
558	"Arial",
559	"PMingLiU",
560	"Gulim",
561	"MS UI Gothic",
562	"Arial Unicode MS",
563	0
564	};
565
566	static const char *ch_TW_tryFonts [] = {
567	"PMingLiU",
568	"Arial",
569	"SimSun",
570	"Gulim",
571	"MS UI Gothic",
572	"Arial Unicode MS",
573	0
574	};
575
576	static const char *kr_tryFonts[] = {
577	"Gulim",
578	"Arial",
579	"PMingLiU",
580	"SimSun",
581	"MS UI Gothic",
582	"Arial Unicode MS",
583	0
584	};
585
586	static const char **tryFonts = 0;
587
588
589	static inline HFONT systemFont()
590	{
591	if (stock_sysfont == 0)
592	stock_sysfont = (HFONT)GetStockObject(SYSTEM_FONT);
593	return stock_sysfont;
594	}
595
596	#if !defined(DEFAULT_GUI_FONT)
597	#define DEFAULT_GUI_FONT 17
598	#endif
599
600	static
601	QFontEngine loadEngine(int script, const QFontPrivate fp, const QFontDef &request, const QtFontDesc *desc,
602	const QStringList &family_list)
603	{
604	LOGFONT lf;
605	memset(&lf, 0, sizeof(LOGFONT));
606
607	bool useDevice = (request.styleStrategy & QFont::PreferDevice) && fp->hdc;
608
609	HDC hdc = shared_dc();
610	QString font_name = desc->family->name;
611
612	if (useDevice) {
613	hdc = fp->hdc;
614	font_name = request.family;
615	}
616
617	bool stockFont = false;
618	bool preferClearTypeAA = false;
619
620	HFONT hfont = 0;
621
622	if (fp->rawMode) { // will choose a stock font
623	int f, deffnt = SYSTEM_FONT;
624	QString fam = desc->family->name.toLower();
625	if (fam == QLatin1String("default"))
626	f = deffnt;
627	else if (fam == QLatin1String("system"))
628	f = SYSTEM_FONT;
629	#ifndef Q_WS_WINCE
630	else if (fam == QLatin1String("system_fixed"))
631	f = SYSTEM_FIXED_FONT;
632	else if (fam == QLatin1String("ansi_fixed"))
633	f = ANSI_FIXED_FONT;
634	else if (fam == QLatin1String("ansi_var"))
635	f = ANSI_VAR_FONT;
636	else if (fam == QLatin1String("device_default"))
637	f = DEVICE_DEFAULT_FONT;
638	else if (fam == QLatin1String("oem_fixed"))
639	f = OEM_FIXED_FONT;
640	#endif
641	else if (fam[0] == QLatin1Char('#'))
642	f = fam.right(fam.length()-1).toInt();
643	else
644	f = deffnt;
645	hfont = (HFONT)GetStockObject(f);
646	if (!hfont) {
647	qErrnoWarning("QFontEngine::loadEngine: GetStockObject failed");
648	hfont = systemFont();
649	}
650	stockFont = true;
651	} else {
652
653	int hint = FF_DONTCARE;
654	switch (request.styleHint) {
655	case QFont::Helvetica:
656	hint = FF_SWISS;
657	break;
658	case QFont::Times:
659	hint = FF_ROMAN;
660	break;
661	case QFont::Courier:
662	hint = FF_MODERN;
663	break;
664	case QFont::OldEnglish:
665	hint = FF_DECORATIVE;
666	break;
667	case QFont::System:
668	hint = FF_MODERN;
669	break;
670	default:
671	break;
672	}
673
674	lf.lfHeight = -qRound(request.pixelSize);
675	lf.lfWidth = 0;
676	lf.lfEscapement = 0;
677	lf.lfOrientation = 0;
678	if (desc->style->key.weight == 50)
679	lf.lfWeight = FW_DONTCARE;
680	else
681	lf.lfWeight = (desc->style->key.weight*900)/99;
682	lf.lfItalic = (desc->style->key.style != QFont::StyleNormal);
683	lf.lfCharSet = DEFAULT_CHARSET;
684
685	int strat = OUT_DEFAULT_PRECIS;
686	if (request.styleStrategy & QFont::PreferBitmap) {
687	strat = OUT_RASTER_PRECIS;
688	#ifndef Q_WS_WINCE
689	} else if (request.styleStrategy & QFont::PreferDevice) {
690	strat = OUT_DEVICE_PRECIS;
691	} else if (request.styleStrategy & QFont::PreferOutline) {
692	strat = OUT_OUTLINE_PRECIS;
693	} else if (request.styleStrategy & QFont::ForceOutline) {
694	strat = OUT_TT_ONLY_PRECIS;
695	#endif
696	}
697
698	lf.lfOutPrecision = strat;
699
700	int qual = DEFAULT_QUALITY;
701
702	if (request.styleStrategy & QFont::PreferMatch)
703	qual = DRAFT_QUALITY;
704	#ifndef Q_WS_WINCE
705	else if (request.styleStrategy & QFont::PreferQuality)
706	qual = PROOF_QUALITY;
707	#endif
708
709	if (request.styleStrategy & QFont::PreferAntialias) {
710	if (QSysInfo::WindowsVersion >= QSysInfo::WV_XP) {
711	qual = CLEARTYPE_QUALITY;
712	preferClearTypeAA = true;
713	} else {
714	qual = ANTIALIASED_QUALITY;
715	}
716	} else if (request.styleStrategy & QFont::NoAntialias) {
717	qual = NONANTIALIASED_QUALITY;
718	}
719
720	lf.lfQuality = qual;
721
722	lf.lfClipPrecision = CLIP_DEFAULT_PRECIS;
723	lf.lfPitchAndFamily = DEFAULT_PITCH \| hint;
724
725	QString fam = font_name;
726
727	if(fam.isEmpty())
728	fam = QLatin1String("MS Sans Serif");
729
730	if ((fam == QLatin1String("MS Sans Serif"))
731	&& (request.style == QFont::StyleItalic \|\| (-lf.lfHeight > 18 && -lf.lfHeight != 24))) {
732	fam = QLatin1String("Arial"); // MS Sans Serif has bearing problems in italic, and does not scale
733	}
734	if (fam == QLatin1String("Courier") && !(request.styleStrategy & QFont::PreferBitmap))
735	fam = QLatin1String("Courier New");
736
737	memcpy(lf.lfFaceName, fam.utf16(), sizeof(wchar_t) * qMin(fam.length() + 1, 32)); // 32 = Windows hard-coded
738	hfont = CreateFontIndirect(&lf);
739	if (!hfont)
740	qErrnoWarning("QFontEngine::loadEngine: CreateFontIndirect failed");
741
742	stockFont = (hfont == 0);
743	bool ttf = false;
744	int avWidth = 0;
745	BOOL res;
746	HGDIOBJ oldObj = SelectObject(hdc, hfont);
747
748	TEXTMETRIC tm;
749	res = GetTextMetrics(hdc, &tm);
750	avWidth = tm.tmAveCharWidth;
751	ttf = tm.tmPitchAndFamily & TMPF_TRUETYPE;
752
753	SelectObject(hdc, oldObj);
754
755	if (hfont && (!ttf \|\| request.stretch != 100)) {
756	DeleteObject(hfont);
757	if (!res)
758	qErrnoWarning("QFontEngine::loadEngine: GetTextMetrics failed");
759	lf.lfWidth = avWidth * request.stretch/100;
760	hfont = CreateFontIndirect(&lf);
761	if (!hfont)
762	qErrnoWarning("QFontEngine::loadEngine: CreateFontIndirect with stretch failed");
763	}
764
765	#ifndef Q_WS_WINCE
766	if (hfont == 0) {
767	hfont = (HFONT)GetStockObject(ANSI_VAR_FONT);
768	stockFont = true;
769	}
770	#else
771	if (hfont == 0) {
772	hfont = (HFONT)GetStockObject(SYSTEM_FONT);
773	stockFont = true;
774	}
775	#endif
776
777	}
778	QFontEngineWin *few = new QFontEngineWin(font_name, hfont, stockFont, lf);
779
780	if (preferClearTypeAA)
781	few->glyphFormat = QFontEngineGlyphCache::Raster_RGBMask;
782
783	// Also check for OpenType tables when using complex scripts
784	// ### TODO: This only works for scripts that require OpenType. More generally
785	// for scripts that do not require OpenType we should just look at the list of
786	// supported writing systems in the font's OS/2 table.
787	if (scriptRequiresOpenType(script)) {
788	HB_Face hbFace = few->harfbuzzFace();
789	if (!hbFace \|\| !hbFace->supported_scripts[script]) {
790	FM_DEBUG(" OpenType support missing for script\n");
791	delete few;
792	return 0;
793	}
794	}
795
796	QFontEngine *fe = few;
797	initFontInfo(few, request, fp);
798	if(script == QUnicodeTables::Common
799	&& !(request.styleStrategy & QFont::NoFontMerging)
800	&& !(desc->family->writingSystems[QFontDatabase::Symbol] & QtFontFamily::Supported)) {
801	if(!tryFonts) {
802	LANGID lid = GetUserDefaultLangID();
803	switch( lid&0xff ) {
804	case LANG_CHINESE: // Chinese (Taiwan)
805	if ( lid == 0x0804 ) // Taiwan
806	tryFonts = ch_TW_tryFonts;
807	else
808	tryFonts = ch_CN_tryFonts;
809	break;
810	case LANG_JAPANESE:
811	tryFonts = jp_tryFonts;
812	break;
813	case LANG_KOREAN:
814	tryFonts = kr_tryFonts;
815	break;
816	default:
817	tryFonts = other_tryFonts;
818	break;
819	}
820	}
821	QStringList fm = QFontDatabase().families();
822	QStringList list = family_list;
823	const char **tf = tryFonts;
824	while(tf && *tf) {
825	if(fm.contains(QLatin1String(*tf)))
826	list << QLatin1String(*tf);
827	++tf;
828	}
829	QFontEngine *mfe = new QFontEngineMultiWin(few, list);
830	mfe->fontDef = fe->fontDef;
831	fe = mfe;
832	}
833	return fe;
834	}
835
836	const char *styleHint(const QFontDef &request)
837	{
838	const char *stylehint = 0;
839	switch (request.styleHint) {
840	case QFont::SansSerif:
841	stylehint = "Arial";
842	break;
843	case QFont::Serif:
844	stylehint = "Times New Roman";
845	break;
846	case QFont::TypeWriter:
847	stylehint = "Courier New";
848	break;
849	default:
850	if (request.fixedPitch)
851	stylehint = "Courier New";
852	break;
853	}
854	return stylehint;
855	}
856
857	static QFontEngine loadWin(const QFontPrivate d, int script, const QFontDef &req)
858	{
859	// list of families to try
860	QStringList family_list = familyList(req);
861
862	const char *stylehint = styleHint(d->request);
863	if (stylehint)
864	family_list << QLatin1String(stylehint);
865
866	// append the default fallback font for the specified script
867	// family_list << ... ; ###########
868
869	// add the default family
870	QString defaultFamily = QApplication::font().family();
871	if (! family_list.contains(defaultFamily))
872	family_list << defaultFamily;
873
874	// add QFont::defaultFamily() to the list, for compatibility with
875	// previous versions
876	family_list << QApplication::font().defaultFamily();
877
878	// null family means find the first font matching the specified script
879	family_list << QString();
880
881	QtFontDesc desc;
882	QFontEngine *fe = 0;
883	QList<int> blacklistedFamilies;
884
885	while (!fe) {
886	for (int i = 0; i < family_list.size(); ++i) {
887	QString family, foundry;
888	parseFontName(family_list.at(i), foundry, family);
889	FM_DEBUG("loadWin: >>>>>>>>>>>>>>trying to match '%s'", family.toLatin1().data());
890	QT_PREPEND_NAMESPACE(match)(script, req, family, foundry, -1, &desc, blacklistedFamilies);
891	if (desc.family)
892	break;
893	}
894	if (!desc.family)
895	break;
896	fe = loadEngine(script, d, req, &desc, family_list);
897	if (!fe)
898	blacklistedFamilies.append(desc.familyIndex);
899	}
900	return fe;
901	}
902
903	void QFontDatabase::load(const QFontPrivate *d, int script)
904	{
905	// sanity checks
906	if (!qApp)
907	qWarning("QFontDatabase::load: Must construct QApplication first");
908	Q_ASSERT(script >= 0 && script < QUnicodeTables::ScriptCount);
909
910	// normalize the request to get better caching
911	QFontDef req = d->request;
912	if (req.pixelSize <= 0)
913	req.pixelSize = qreal((req.pointSize * d->dpi) / 72.);
914	if (req.pixelSize < 1)
915	req.pixelSize = 1;
916	if (req.weight == 0)
917	req.weight = QFont::Normal;
918	if (req.stretch == 0)
919	req.stretch = 100;
920
921	QFontCache::Key key(req, d->rawMode ? QUnicodeTables::Common : script, d->screen);
922	if (!d->engineData)
923	getEngineData(d, key);
924
925	// the cached engineData could have already loaded the engine we want
926	if (d->engineData->engines[script])
927	return;
928
929	QFontEngine *fe = QFontCache::instance()->findEngine(key);
930
931	// set it to the actual pointsize, so QFontInfo will do the right thing
932	if (req.pointSize < 0)
933	req.pointSize = req.pixelSize*72./d->dpi;
934
935	if (!fe) {
936	if (qt_enable_test_font && req.family == QLatin1String("__Qt__Box__Engine__")) {
937	fe = new QTestFontEngine(req.pixelSize);
938	fe->fontDef = req;
939	} else {
940	QMutexLocker locker(fontDatabaseMutex());
941	if (!privateDb()->count)
942	initializeDb();
943	fe = loadWin(d, script, req);
944	}
945	if (!fe) {
946	fe = new QFontEngineBox(req.pixelSize);
947	fe->fontDef = QFontDef();
948	}
949	}
950	d->engineData->engines[script] = fe;
951	fe->ref.ref();
952	QFontCache::instance()->insertEngine(key, fe);
953	}
954
955	#if !defined(FR_PRIVATE)
956	#define FR_PRIVATE 0x10
957	#endif
958
959	typedef int (WINAPI *PtrAddFontResourceExW)(LPCWSTR, DWORD, PVOID);
960	typedef HANDLE (WINAPI PtrAddFontMemResourceEx)(PVOID, DWORD, PVOID, DWORD );
961	typedef BOOL (WINAPI *PtrRemoveFontResourceExW)(LPCWSTR, DWORD, PVOID);
962	typedef BOOL (WINAPI *PtrRemoveFontMemResourceEx)(HANDLE);
963
964	static QList<quint32> getTrueTypeFontOffsets(const uchar *fontData)
965	{
966	QList<quint32> offsets;
967	const quint32 headerTag = reinterpret_cast<const quint32 >(fontData);
968	if (headerTag != MAKE_TAG('t', 't', 'c', 'f')) {
969	if (headerTag != MAKE_TAG(0, 1, 0, 0)
970	&& headerTag != MAKE_TAG('O', 'T', 'T', 'O')
971	&& headerTag != MAKE_TAG('t', 'r', 'u', 'e')
972	&& headerTag != MAKE_TAG('t', 'y', 'p', '1'))
973	return offsets;
974	offsets << 0;
975	return offsets;
976	}
977	const quint32 numFonts = qFromBigEndian<quint32>(fontData + 8);
978	for (uint i = 0; i < numFonts; ++i) {
979	offsets << qFromBigEndian<quint32>(fontData + 12 + i * 4);
980	}
981	return offsets;
982	}
983
984	static void getFontTable(const uchar fileBegin, const uchar data, quint32 tag, const uchar *table, quint32 length)
985	{
986	const quint16 numTables = qFromBigEndian<quint16>(data + 4);
987	for (uint i = 0; i < numTables; ++i) {
988	const quint32 offset = 12 + 16 * i;
989	if (reinterpret_cast<const quint32 >(data + offset) == tag) {
990	*table = fileBegin + qFromBigEndian<quint32>(data + offset + 8);
991	*length = qFromBigEndian<quint32>(data + offset + 12);
992	return;
993	}
994	}
995	*table = 0;
996	*length = 0;
997	return;
998	}
999
1000	static void getFamiliesAndSignatures(const QByteArray &fontData, QFontDatabasePrivate::ApplicationFont *appFont)
1001	{
1002	const uchar data = reinterpret_cast<const uchar >(fontData.constData());
1003
1004	QList<quint32> offsets = getTrueTypeFontOffsets(data);
1005	if (offsets.isEmpty())
1006	return;
1007
1008	for (int i = 0; i < offsets.count(); ++i) {
1009	const uchar *font = data + offsets.at(i);
1010	const uchar *table;
1011	quint32 length;
1012	getFontTable(data, font, MAKE_TAG('n', 'a', 'm', 'e'), &table, &length);
1013	if (!table)
1014	continue;
1015	QString name = getEnglishName(table, length);
1016	if (name.isEmpty())
1017	continue;
1018
1019	appFont->families << name;
1020	FONTSIGNATURE signature;
1021	getFontTable(data, font, MAKE_TAG('O', 'S', '/', '2'), &table, &length);
1022	if (table && length >= 86) {
1023	// See also qfontdatabase_mac.cpp, offsets taken from OS/2 table in the TrueType spec
1024	signature.fsUsb[0] = qFromBigEndian<quint32>(table + 42);
1025	signature.fsUsb[1] = qFromBigEndian<quint32>(table + 46);
1026	signature.fsUsb[2] = qFromBigEndian<quint32>(table + 50);
1027	signature.fsUsb[3] = qFromBigEndian<quint32>(table + 54);
1028
1029	signature.fsCsb[0] = qFromBigEndian<quint32>(table + 78);
1030	signature.fsCsb[1] = qFromBigEndian<quint32>(table + 82);
1031	} else {
1032	memset(&signature, 0, sizeof(signature));
1033	}
1034	appFont->signatures << signature;
1035	}
1036	}
1037
1038	static void registerFont(QFontDatabasePrivate::ApplicationFont *fnt)
1039	{
1040	if(!fnt->data.isEmpty()) {
1041	#ifndef Q_OS_WINCE
1042	PtrAddFontMemResourceEx ptrAddFontMemResourceEx = (PtrAddFontMemResourceEx)QLibrary::resolve(QLatin1String("gdi32"),
1043	"AddFontMemResourceEx");
1044	if (!ptrAddFontMemResourceEx)
1045	return;
1046	#endif
1047	getFamiliesAndSignatures(fnt->data, fnt);
1048	if (fnt->families.isEmpty())
1049	return;
1050
1051	#ifdef Q_OS_WINCE
1052	HANDLE handle = 0;
1053
1054	{
1055	#ifdef QT_NO_TEMPORARYFILE
1056	wchar_t lpBuffer[MAX_PATH];
1057	GetTempPath(MAX_PATH, lpBuffer);
1058	QString s = QString::fromWCharArray(lpBuffer);
1059	QFile tempfile(s + QLatin1String("/font") + QString::number(GetTickCount()) + QLatin1String(".ttf"));
1060	if (!tempfile.open(QIODevice::ReadWrite))
1061	#else
1062	QTemporaryFile tempfile(QLatin1String("XXXXXXXX.ttf"));
1063	if (!tempfile.open())
1064	#endif // QT_NO_TEMPORARYFILE
1065	return;
1066	if (tempfile.write(fnt->data) == -1)
1067	return;
1068
1069	#ifndef QT_NO_TEMPORARYFILE
1070	tempfile.setAutoRemove(false);
1071	#endif
1072	fnt->fileName = QFileInfo(tempfile.fileName()).absoluteFilePath();
1073	}
1074
1075	if (AddFontResource((LPCWSTR)fnt->fileName.utf16()) == 0) {
1076	QFile(fnt->fileName).remove();
1077	return;
1078	}
1079	#else
1080	DWORD dummy = 0;
1081	HANDLE handle = ptrAddFontMemResourceEx((void *)fnt->data.constData(), fnt->data.size(), 0,
1082	&dummy);
1083	if (handle == 0)
1084	return;
1085	#endif // Q_OS_WINCE
1086
1087	fnt->handle = handle;
1088	fnt->data = QByteArray();
1089	fnt->memoryFont = true;
1090	} else {
1091	QFile f(fnt->fileName);
1092	if (!f.open(QIODevice::ReadOnly))
1093	return;
1094	QByteArray data = f.readAll();
1095	f.close();
1096	getFamiliesAndSignatures(data, fnt);
1097
1098	#ifdef Q_OS_WINCE
1099	QFileInfo fileinfo(fnt->fileName);
1100	fnt->fileName = fileinfo.absoluteFilePath();
1101	if (AddFontResource((LPCWSTR)fnt->fileName.utf16()) == 0)
1102	return;
1103	#else
1104	// supported from 2000 on, so no need to deal with the *A variant
1105	PtrAddFontResourceExW ptrAddFontResourceExW = (PtrAddFontResourceExW)QLibrary::resolve(QLatin1String("gdi32"),
1106	"AddFontResourceExW");
1107	if (!ptrAddFontResourceExW
1108	\|\| ptrAddFontResourceExW((wchar_t*)fnt->fileName.utf16(), FR_PRIVATE, 0) == 0)
1109	return;
1110	#endif // Q_OS_WINCE
1111
1112	fnt->memoryFont = false;
1113	}
1114	}
1115
1116	bool QFontDatabase::removeApplicationFont(int handle)
1117	{
1118	QMutexLocker locker(fontDatabaseMutex());
1119
1120	QFontDatabasePrivate *db = privateDb();
1121	if (handle < 0 \|\| handle >= db->applicationFonts.count())
1122	return false;
1123
1124	const QFontDatabasePrivate::ApplicationFont font = db->applicationFonts.at(handle);
1125	db->applicationFonts[handle] = QFontDatabasePrivate::ApplicationFont();
1126	if (font.memoryFont) {
1127	#ifdef Q_OS_WINCE
1128	bool removeSucceeded = RemoveFontResource((LPCWSTR)font.fileName.utf16());
1129	QFile tempfile(font.fileName);
1130	tempfile.remove();
1131	if (!removeSucceeded)
1132	return false;
1133	#else
1134	PtrRemoveFontMemResourceEx ptrRemoveFontMemResourceEx = (PtrRemoveFontMemResourceEx)QLibrary::resolve(QLatin1String("gdi32"),
1135	"RemoveFontMemResourceEx");
1136	if (!ptrRemoveFontMemResourceEx
1137	\|\| !ptrRemoveFontMemResourceEx(font.handle))
1138	return false;
1139	#endif // Q_OS_WINCE
1140	} else {
1141	#ifdef Q_OS_WINCE
1142	if (!RemoveFontResource((LPCWSTR)font.fileName.utf16()))
1143	return false;
1144	#else
1145	PtrRemoveFontResourceExW ptrRemoveFontResourceExW = (PtrRemoveFontResourceExW)QLibrary::resolve(QLatin1String("gdi32"),
1146	"RemoveFontResourceExW");
1147	if (!ptrRemoveFontResourceExW
1148	\|\| !ptrRemoveFontResourceExW((LPCWSTR)font.fileName.utf16(), FR_PRIVATE, 0))
1149	return false;
1150	#endif // Q_OS_WINCE
1151	}
1152
1153	db->invalidate();
1154	return true;
1155	}
1156
1157	bool QFontDatabase::removeAllApplicationFonts()
1158	{
1159	QMutexLocker locker(fontDatabaseMutex());
1160
1161	QFontDatabasePrivate *db = privateDb();
1162	for (int i = 0; i < db->applicationFonts.count(); ++i)
1163	if (!removeApplicationFont(i))
1164	return false;
1165	return true;
1166	}
1167
1168	bool QFontDatabase::supportsThreadedFontRendering()
1169	{
1170	return true;
1171	}
1172
1173	QT_END_NAMESPACE

Note: See TracBrowser for help on using the repository browser.

Download in other formats: