[2] | 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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[561] | 4 | ** All rights reserved.
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| 5 | ** Contact: Nokia Corporation ([email protected])
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[2] | 6 | **
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| 7 | ** This file is part of the QtGui module of the Qt Toolkit.
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| 8 | **
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| 9 | ** $QT_BEGIN_LICENSE:LGPL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in
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| 14 | ** a written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Lesser General Public License Usage
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Lesser
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| 18 | ** General Public License version 2.1 as published by the Free Software
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| 19 | ** Foundation and appearing in the file LICENSE.LGPL included in the
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| 20 | ** packaging of this file. Please review the following information to
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| 21 | ** ensure the GNU Lesser General Public License version 2.1 requirements
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| 22 | ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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| 23 | **
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[561] | 24 | ** In addition, as a special exception, Nokia gives you certain additional
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| 25 | ** rights. These rights are described in the Nokia Qt LGPL Exception
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| 26 | ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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[2] | 27 | **
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| 28 | ** GNU General Public License Usage
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| 29 | ** Alternatively, this file may be used under the terms of the GNU
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| 30 | ** General Public License version 3.0 as published by the Free Software
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| 31 | ** Foundation and appearing in the file LICENSE.GPL included in the
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| 32 | ** packaging of this file. Please review the following information to
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| 33 | ** ensure the GNU General Public License version 3.0 requirements will be
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| 34 | ** met: http://www.gnu.org/copyleft/gpl.html.
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| 35 | **
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[561] | 36 | ** If you have questions regarding the use of this file, please contact
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| 37 | ** Nokia at [email protected].
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[2] | 38 | ** $QT_END_LICENSE$
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| 39 | **
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| 40 | ****************************************************************************/
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| 41 |
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| 42 | #define QT_FATAL_ASSERT
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| 43 |
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| 44 | #include "qplatformdefs.h"
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| 45 |
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| 46 | #include "qfont.h"
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| 47 | #include "qapplication.h"
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| 48 | #include "qfontinfo.h"
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| 49 | #include "qfontdatabase.h"
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| 50 | #include "qfontmetrics.h"
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| 51 | #include "qpaintdevice.h"
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| 52 | #include "qtextcodec.h"
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| 53 | #include "qiodevice.h"
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| 54 | #include "qhash.h"
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| 55 |
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| 56 | #include <private/qunicodetables_p.h>
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| 57 | #include "qfont_p.h"
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| 58 | #include "qfontengine_p.h"
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| 59 | #include "qfontengine_x11_p.h"
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| 60 | #include "qtextengine_p.h"
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| 61 |
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| 62 | #include <private/qt_x11_p.h>
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| 63 | #include "qx11info_x11.h"
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| 64 |
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| 65 | #include <time.h>
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| 66 | #include <stdlib.h>
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| 67 | #include <ctype.h>
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| 68 |
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| 69 | #define QFONTLOADER_DEBUG
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| 70 | #define QFONTLOADER_DEBUG_VERBOSE
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| 71 |
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| 72 | QT_BEGIN_NAMESPACE
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| 73 |
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| 74 | double qt_pixelSize(double pointSize, int dpi)
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| 75 | {
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| 76 | if (pointSize < 0)
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| 77 | return -1.;
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| 78 | if (dpi == 75) // the stupid 75 dpi setting on X11
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| 79 | dpi = 72;
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| 80 | return (pointSize * dpi) /72.;
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| 81 | }
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| 82 |
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| 83 | double qt_pointSize(double pixelSize, int dpi)
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| 84 | {
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| 85 | if (pixelSize < 0)
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| 86 | return -1.;
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| 87 | if (dpi == 75) // the stupid 75 dpi setting on X11
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| 88 | dpi = 72;
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| 89 | return pixelSize * 72. / ((double) dpi);
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| 90 | }
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| 91 |
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| 92 | /*
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| 93 | Removes wildcards from an XLFD.
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| 94 |
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| 95 | Returns \a xlfd with all wildcards removed if a match for \a xlfd is
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| 96 | found, otherwise it returns \a xlfd.
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| 97 | */
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| 98 | static QByteArray qt_fixXLFD(const QByteArray &xlfd)
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| 99 | {
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| 100 | QByteArray ret = xlfd;
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| 101 | int count = 0;
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| 102 | char **fontNames =
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| 103 | XListFonts(QX11Info::display(), xlfd, 32768, &count);
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| 104 | if (count > 0)
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| 105 | ret = fontNames[0];
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| 106 | XFreeFontNames(fontNames);
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| 107 | return ret ;
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| 108 | }
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| 109 |
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| 110 | typedef QHash<int, QString> FallBackHash;
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| 111 | Q_GLOBAL_STATIC(FallBackHash, fallBackHash)
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| 112 |
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| 113 | // Returns the user-configured fallback family for the specified script.
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| 114 | QString qt_fallback_font_family(int script)
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| 115 | {
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| 116 | FallBackHash *hash = fallBackHash();
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| 117 | return hash->value(script);
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| 118 | }
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| 119 |
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| 120 | // Sets the fallback family for the specified script.
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| 121 | Q_GUI_EXPORT void qt_x11_set_fallback_font_family(int script, const QString &family)
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| 122 | {
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| 123 | FallBackHash *hash = fallBackHash();
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| 124 | if (!family.isEmpty())
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| 125 | hash->insert(script, family);
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| 126 | else
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| 127 | hash->remove(script);
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| 128 | }
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| 129 |
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| 130 | int QFontPrivate::defaultEncodingID = -1;
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| 131 |
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| 132 | void QFont::initialize()
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| 133 | {
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| 134 | extern int qt_encoding_id_for_mib(int mib); // from qfontdatabase_x11.cpp
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| 135 | QTextCodec *codec = QTextCodec::codecForLocale();
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| 136 | // determine the default encoding id using the locale, otherwise
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| 137 | // fallback to latin1 (mib == 4)
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| 138 | int mib = codec ? codec->mibEnum() : 4;
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| 139 |
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| 140 | // for asian locales, use the mib for the font codec instead of the locale codec
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| 141 | switch (mib) {
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| 142 | case 38: // eucKR
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| 143 | mib = 36;
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| 144 | break;
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| 145 |
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| 146 | case 2025: // GB2312
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| 147 | mib = 57;
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| 148 | break;
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| 149 |
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| 150 | case 113: // GBK
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| 151 | mib = -113;
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| 152 | break;
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| 153 |
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| 154 | case 114: // GB18030
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| 155 | mib = -114;
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| 156 | break;
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| 157 |
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| 158 | case 2026: // Big5
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| 159 | mib = -2026;
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| 160 | break;
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| 161 |
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| 162 | case 2101: // Big5-HKSCS
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| 163 | mib = -2101;
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| 164 | break;
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| 165 |
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| 166 | case 16: // JIS7
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| 167 | mib = 15;
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| 168 | break;
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| 169 |
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| 170 | case 17: // SJIS
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| 171 | case 18: // eucJP
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| 172 | mib = 63;
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| 173 | break;
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| 174 | }
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| 175 |
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| 176 | // get the default encoding id for the locale encoding...
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| 177 | QFontPrivate::defaultEncodingID = qt_encoding_id_for_mib(mib);
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| 178 | }
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| 179 |
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| 180 | void QFont::cleanup()
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| 181 | {
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| 182 | QFontCache::cleanup();
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| 183 | }
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| 184 |
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| 185 | /*!
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| 186 | \internal
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| 187 | X11 Only: Returns the screen with which this font is associated.
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| 188 | */
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| 189 | int QFont::x11Screen() const
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| 190 | {
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| 191 | return d->screen;
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| 192 | }
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| 193 |
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| 194 | /*! \internal
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| 195 | X11 Only: Associate the font with the specified \a screen.
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| 196 | */
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| 197 | void QFont::x11SetScreen(int screen)
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| 198 | {
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| 199 | if (screen < 0) // assume default
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| 200 | screen = QX11Info::appScreen();
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| 201 |
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| 202 | if (screen == d->screen)
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| 203 | return; // nothing to do
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| 204 |
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| 205 | detach();
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| 206 | d->screen = screen;
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| 207 | }
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| 208 |
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| 209 | Qt::HANDLE QFont::handle() const
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| 210 | {
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| 211 | QFontEngine *engine = d->engineForScript(QUnicodeTables::Common);
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| 212 | Q_ASSERT(engine != 0);
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| 213 | if (engine->type() == QFontEngine::Multi)
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| 214 | engine = static_cast<QFontEngineMulti *>(engine)->engine(0);
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| 215 | if (engine->type() == QFontEngine::XLFD)
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| 216 | return static_cast<QFontEngineXLFD *>(engine)->fontStruct()->fid;
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| 217 | return 0;
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| 218 | }
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| 219 |
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| 220 |
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| 221 | FT_Face QFont::freetypeFace() const
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| 222 | {
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| 223 | #ifndef QT_NO_FREETYPE
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| 224 | QFontEngine *engine = d->engineForScript(QUnicodeTables::Common);
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| 225 | if (engine->type() == QFontEngine::Multi)
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| 226 | engine = static_cast<QFontEngineMulti *>(engine)->engine(0);
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| 227 | #ifndef QT_NO_FONTCONFIG
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| 228 | if (engine->type() == QFontEngine::Freetype) {
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| 229 | const QFontEngineFT *ft = static_cast<const QFontEngineFT *>(engine);
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| 230 | return ft->non_locked_face();
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| 231 | } else
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| 232 | #endif
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| 233 | if (engine->type() == QFontEngine::XLFD) {
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| 234 | const QFontEngineXLFD *xlfd = static_cast<const QFontEngineXLFD *>(engine);
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| 235 | return xlfd->non_locked_face();
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| 236 | }
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| 237 | #endif
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| 238 | return 0;
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| 239 | }
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| 240 |
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| 241 | QString QFont::rawName() const
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| 242 | {
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| 243 | QFontEngine *engine = d->engineForScript(QUnicodeTables::Common);
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| 244 | Q_ASSERT(engine != 0);
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| 245 | if (engine->type() == QFontEngine::Multi)
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| 246 | engine = static_cast<QFontEngineMulti *>(engine)->engine(0);
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| 247 | if (engine->type() == QFontEngine::XLFD)
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| 248 | return QString::fromLatin1(engine->name());
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| 249 | return QString();
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| 250 | }
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| 251 | struct QtFontDesc;
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| 252 |
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| 253 | void QFont::setRawName(const QString &name)
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| 254 | {
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| 255 | detach();
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| 256 |
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| 257 | // from qfontdatabase_x11.cpp
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| 258 | extern bool qt_fillFontDef(const QByteArray &xlfd, QFontDef *fd, int dpi, QtFontDesc *desc);
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| 259 |
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| 260 | if (!qt_fillFontDef(qt_fixXLFD(name.toLatin1()), &d->request, d->dpi, 0)) {
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| 261 | qWarning("QFont::setRawName: Invalid XLFD: \"%s\"", name.toLatin1().constData());
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| 262 |
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| 263 | setFamily(name);
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| 264 | setRawMode(true);
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| 265 | } else {
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| 266 | resolve_mask = QFont::AllPropertiesResolved;
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| 267 | }
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| 268 | }
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| 269 |
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| 270 | QString QFont::lastResortFamily() const
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| 271 | {
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| 272 | return QString::fromLatin1("Helvetica");
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| 273 | }
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| 274 |
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| 275 | QString QFont::defaultFamily() const
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| 276 | {
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| 277 | switch (d->request.styleHint) {
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| 278 | case QFont::Times:
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| 279 | return QString::fromLatin1("Times");
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| 280 |
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| 281 | case QFont::Courier:
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| 282 | return QString::fromLatin1("Courier");
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| 283 |
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| 284 | case QFont::Decorative:
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| 285 | return QString::fromLatin1("Old English");
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| 286 |
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| 287 | case QFont::Helvetica:
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| 288 | case QFont::System:
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| 289 | default:
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| 290 | return QString::fromLatin1("Helvetica");
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| 291 | }
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| 292 | }
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| 293 |
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| 294 | /*
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| 295 | Returns a last resort raw font name for the font matching algorithm.
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| 296 | This is used if even the last resort family is not available. It
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| 297 | returns \e something, almost no matter what. The current
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| 298 | implementation tries a wide variety of common fonts, returning the
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| 299 | first one it finds. The implementation may change at any time.
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| 300 | */
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| 301 | static const char * const tryFonts[] = {
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| 302 | "-*-helvetica-medium-r-*-*-*-120-*-*-*-*-*-*",
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| 303 | "-*-courier-medium-r-*-*-*-120-*-*-*-*-*-*",
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| 304 | "-*-times-medium-r-*-*-*-120-*-*-*-*-*-*",
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| 305 | "-*-lucida-medium-r-*-*-*-120-*-*-*-*-*-*",
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| 306 | "-*-helvetica-*-*-*-*-*-120-*-*-*-*-*-*",
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| 307 | "-*-courier-*-*-*-*-*-120-*-*-*-*-*-*",
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| 308 | "-*-times-*-*-*-*-*-120-*-*-*-*-*-*",
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| 309 | "-*-lucida-*-*-*-*-*-120-*-*-*-*-*-*",
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| 310 | "-*-helvetica-*-*-*-*-*-*-*-*-*-*-*-*",
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| 311 | "-*-courier-*-*-*-*-*-*-*-*-*-*-*-*",
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| 312 | "-*-times-*-*-*-*-*-*-*-*-*-*-*-*",
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| 313 | "-*-lucida-*-*-*-*-*-*-*-*-*-*-*-*",
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| 314 | "-*-fixed-*-*-*-*-*-*-*-*-*-*-*-*",
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| 315 | "6x13",
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| 316 | "7x13",
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| 317 | "8x13",
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| 318 | "9x15",
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| 319 | "fixed",
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| 320 | 0
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| 321 | };
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| 322 |
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| 323 | // Returns true if the font exists, false otherwise
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| 324 | static bool fontExists(const QString &fontName)
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| 325 | {
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| 326 | int count;
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| 327 | char **fontNames = XListFonts(QX11Info::display(), (char*)fontName.toLatin1().constData(), 32768, &count);
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| 328 | if (fontNames) XFreeFontNames(fontNames);
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| 329 |
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| 330 | return count != 0;
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| 331 | }
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| 332 |
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| 333 | QString QFont::lastResortFont() const
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| 334 | {
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| 335 | static QString last;
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| 336 |
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| 337 | // already found
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| 338 | if (! last.isNull())
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| 339 | return last;
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| 340 |
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| 341 | int i = 0;
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| 342 | const char* f;
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| 343 |
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| 344 | while ((f = tryFonts[i])) {
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| 345 | last = QString::fromLatin1(f);
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| 346 |
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| 347 | if (fontExists(last))
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| 348 | return last;
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| 349 |
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| 350 | i++;
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| 351 | }
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| 352 |
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| 353 | #if defined(CHECK_NULL)
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| 354 | qFatal("QFontPrivate::lastResortFont: Cannot find any reasonable font");
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| 355 | #endif
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| 356 | return last;
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| 357 | }
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| 358 |
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| 359 | QT_END_NAMESPACE
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