author | Eckhart Koeppen <eckhart.koppen@nokia.com> |
Wed, 21 Apr 2010 12:15:23 +0300 | |
branch | RCL_3 |
changeset 12 | cc75c76972ee |
parent 4 | 3b1da2848fc7 |
permissions | -rw-r--r-- |
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/**************************************************************************** |
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** |
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3b1da2848fc7
Revision: 201003
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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diff
changeset
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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** All rights reserved. |
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** Contact: Nokia Corporation (qt-info@nokia.com) |
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** |
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** This file is part of the QtGui module of the Qt Toolkit. |
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** |
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** $QT_BEGIN_LICENSE:LGPL$ |
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** No Commercial Usage |
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** This file contains pre-release code and may not be distributed. |
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** You may use this file in accordance with the terms and conditions |
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** contained in the Technology Preview License Agreement accompanying |
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** this package. |
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** |
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** GNU Lesser General Public License Usage |
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** Alternatively, this file may be used under the terms of the GNU Lesser |
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** General Public License version 2.1 as published by the Free Software |
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** Foundation and appearing in the file LICENSE.LGPL included in the |
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** packaging of this file. Please review the following information to |
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** ensure the GNU Lesser General Public License version 2.1 requirements |
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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** |
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** In addition, as a special exception, Nokia gives you certain additional |
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** rights. These rights are described in the Nokia Qt LGPL Exception |
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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** |
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** If you have questions regarding the use of this file, please contact |
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** Nokia at qt-info@nokia.com. |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** |
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** $QT_END_LICENSE$ |
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** |
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****************************************************************************/ |
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#define QT_FATAL_ASSERT |
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#include "qplatformdefs.h" |
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#include "qfont.h" |
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#include "qapplication.h" |
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#include "qfontinfo.h" |
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#include "qfontdatabase.h" |
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#include "qfontmetrics.h" |
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#include "qpaintdevice.h" |
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#include "qtextcodec.h" |
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#include "qiodevice.h" |
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#include "qhash.h" |
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#include <private/qunicodetables_p.h> |
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#include "qfont_p.h" |
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#include "qfontengine_p.h" |
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#include "qfontengine_x11_p.h" |
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#include "qtextengine_p.h" |
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#include <private/qt_x11_p.h> |
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#include "qx11info_x11.h" |
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#include <time.h> |
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#include <stdlib.h> |
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#include <ctype.h> |
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#define QFONTLOADER_DEBUG |
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#define QFONTLOADER_DEBUG_VERBOSE |
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QT_BEGIN_NAMESPACE |
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double qt_pixelSize(double pointSize, int dpi) |
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{ |
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if (pointSize < 0) |
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return -1.; |
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if (dpi == 75) // the stupid 75 dpi setting on X11 |
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dpi = 72; |
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return (pointSize * dpi) /72.; |
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} |
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double qt_pointSize(double pixelSize, int dpi) |
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{ |
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if (pixelSize < 0) |
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return -1.; |
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if (dpi == 75) // the stupid 75 dpi setting on X11 |
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dpi = 72; |
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return pixelSize * 72. / ((double) dpi); |
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} |
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/* |
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Removes wildcards from an XLFD. |
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Returns \a xlfd with all wildcards removed if a match for \a xlfd is |
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found, otherwise it returns \a xlfd. |
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*/ |
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static QByteArray qt_fixXLFD(const QByteArray &xlfd) |
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{ |
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QByteArray ret = xlfd; |
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int count = 0; |
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char **fontNames = |
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XListFonts(QX11Info::display(), xlfd, 32768, &count); |
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if (count > 0) |
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ret = fontNames[0]; |
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XFreeFontNames(fontNames); |
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return ret ; |
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} |
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typedef QHash<int, QString> FallBackHash; |
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Q_GLOBAL_STATIC(FallBackHash, fallBackHash) |
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// Returns the user-configured fallback family for the specified script. |
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QString qt_fallback_font_family(int script) |
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{ |
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FallBackHash *hash = fallBackHash(); |
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return hash->value(script); |
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} |
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// Sets the fallback family for the specified script. |
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Q_GUI_EXPORT void qt_x11_set_fallback_font_family(int script, const QString &family) |
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{ |
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FallBackHash *hash = fallBackHash(); |
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if (!family.isEmpty()) |
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hash->insert(script, family); |
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else |
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hash->remove(script); |
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} |
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int QFontPrivate::defaultEncodingID = -1; |
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void QFont::initialize() |
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{ |
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extern int qt_encoding_id_for_mib(int mib); // from qfontdatabase_x11.cpp |
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QTextCodec *codec = QTextCodec::codecForLocale(); |
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// determine the default encoding id using the locale, otherwise |
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// fallback to latin1 (mib == 4) |
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int mib = codec ? codec->mibEnum() : 4; |
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// for asian locales, use the mib for the font codec instead of the locale codec |
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switch (mib) { |
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case 38: // eucKR |
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mib = 36; |
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break; |
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case 2025: // GB2312 |
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mib = 57; |
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break; |
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case 113: // GBK |
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mib = -113; |
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break; |
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case 114: // GB18030 |
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mib = -114; |
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break; |
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case 2026: // Big5 |
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mib = -2026; |
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break; |
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case 2101: // Big5-HKSCS |
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mib = -2101; |
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break; |
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case 16: // JIS7 |
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mib = 15; |
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break; |
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case 17: // SJIS |
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case 18: // eucJP |
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mib = 63; |
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break; |
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} |
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// get the default encoding id for the locale encoding... |
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QFontPrivate::defaultEncodingID = qt_encoding_id_for_mib(mib); |
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} |
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void QFont::cleanup() |
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{ |
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QFontCache::cleanup(); |
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} |
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/*! |
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\internal |
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X11 Only: Returns the screen with which this font is associated. |
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*/ |
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int QFont::x11Screen() const |
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{ |
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return d->screen; |
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} |
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/*! \internal |
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X11 Only: Associate the font with the specified \a screen. |
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*/ |
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void QFont::x11SetScreen(int screen) |
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{ |
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if (screen < 0) // assume default |
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screen = QX11Info::appScreen(); |
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if (screen == d->screen) |
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return; // nothing to do |
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detach(); |
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d->screen = screen; |
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} |
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Qt::HANDLE QFont::handle() const |
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{ |
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QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); |
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Q_ASSERT(engine != 0); |
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if (engine->type() == QFontEngine::Multi) |
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engine = static_cast<QFontEngineMulti *>(engine)->engine(0); |
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if (engine->type() == QFontEngine::XLFD) |
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return static_cast<QFontEngineXLFD *>(engine)->fontStruct()->fid; |
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return 0; |
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} |
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FT_Face QFont::freetypeFace() const |
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{ |
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#ifndef QT_NO_FREETYPE |
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QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); |
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if (engine->type() == QFontEngine::Multi) |
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engine = static_cast<QFontEngineMulti *>(engine)->engine(0); |
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#ifndef QT_NO_FONTCONFIG |
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if (engine->type() == QFontEngine::Freetype) { |
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const QFontEngineFT *ft = static_cast<const QFontEngineFT *>(engine); |
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return ft->non_locked_face(); |
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} else |
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#endif |
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if (engine->type() == QFontEngine::XLFD) { |
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const QFontEngineXLFD *xlfd = static_cast<const QFontEngineXLFD *>(engine); |
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return xlfd->non_locked_face(); |
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} |
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#endif |
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return 0; |
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} |
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QString QFont::rawName() const |
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{ |
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QFontEngine *engine = d->engineForScript(QUnicodeTables::Common); |
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Q_ASSERT(engine != 0); |
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if (engine->type() == QFontEngine::Multi) |
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engine = static_cast<QFontEngineMulti *>(engine)->engine(0); |
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if (engine->type() == QFontEngine::XLFD) |
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return QString::fromLatin1(engine->name()); |
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return QString(); |
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} |
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struct QtFontDesc; |
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void QFont::setRawName(const QString &name) |
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{ |
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detach(); |
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// from qfontdatabase_x11.cpp |
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extern bool qt_fillFontDef(const QByteArray &xlfd, QFontDef *fd, int dpi, QtFontDesc *desc); |
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if (!qt_fillFontDef(qt_fixXLFD(name.toLatin1()), &d->request, d->dpi, 0)) { |
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qWarning("QFont::setRawName: Invalid XLFD: \"%s\"", name.toLatin1().constData()); |
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setFamily(name); |
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setRawMode(true); |
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} else { |
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resolve_mask = QFont::AllPropertiesResolved; |
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} |
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} |
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QString QFont::lastResortFamily() const |
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{ |
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return QString::fromLatin1("Helvetica"); |
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} |
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QString QFont::defaultFamily() const |
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{ |
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switch (d->request.styleHint) { |
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case QFont::Times: |
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return QString::fromLatin1("Times"); |
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case QFont::Courier: |
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return QString::fromLatin1("Courier"); |
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case QFont::Decorative: |
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return QString::fromLatin1("Old English"); |
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case QFont::Helvetica: |
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case QFont::System: |
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default: |
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return QString::fromLatin1("Helvetica"); |
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} |
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} |
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/* |
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Returns a last resort raw font name for the font matching algorithm. |
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This is used if even the last resort family is not available. It |
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returns \e something, almost no matter what. The current |
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implementation tries a wide variety of common fonts, returning the |
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first one it finds. The implementation may change at any time. |
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*/ |
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static const char * const tryFonts[] = { |
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"-*-helvetica-medium-r-*-*-*-120-*-*-*-*-*-*", |
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"-*-courier-medium-r-*-*-*-120-*-*-*-*-*-*", |
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"-*-times-medium-r-*-*-*-120-*-*-*-*-*-*", |
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"-*-lucida-medium-r-*-*-*-120-*-*-*-*-*-*", |
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"-*-helvetica-*-*-*-*-*-120-*-*-*-*-*-*", |
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"-*-courier-*-*-*-*-*-120-*-*-*-*-*-*", |
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"-*-times-*-*-*-*-*-120-*-*-*-*-*-*", |
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"-*-lucida-*-*-*-*-*-120-*-*-*-*-*-*", |
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"-*-helvetica-*-*-*-*-*-*-*-*-*-*-*-*", |
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"-*-courier-*-*-*-*-*-*-*-*-*-*-*-*", |
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"-*-times-*-*-*-*-*-*-*-*-*-*-*-*", |
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"-*-lucida-*-*-*-*-*-*-*-*-*-*-*-*", |
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"-*-fixed-*-*-*-*-*-*-*-*-*-*-*-*", |
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"6x13", |
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"7x13", |
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"8x13", |
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"9x15", |
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"fixed", |
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0 |
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}; |
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// Returns true if the font exists, false otherwise |
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static bool fontExists(const QString &fontName) |
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{ |
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int count; |
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char **fontNames = XListFonts(QX11Info::display(), (char*)fontName.toLatin1().constData(), 32768, &count); |
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if (fontNames) XFreeFontNames(fontNames); |
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return count != 0; |
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} |
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QString QFont::lastResortFont() const |
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{ |
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static QString last; |
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// already found |
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if (! last.isNull()) |
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return last; |
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int i = 0; |
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const char* f; |
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while ((f = tryFonts[i])) { |
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last = QString::fromLatin1(f); |
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if (fontExists(last)) |
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return last; |
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i++; |
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} |
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#if defined(CHECK_NULL) |
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qFatal("QFontPrivate::lastResortFont: Cannot find any reasonable font"); |
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#endif |
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return last; |
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} |
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QT_END_NAMESPACE |