util/src/gui/text/qfont_win.cpp
author eckhart.koppen@nokia.com
Wed, 31 Mar 2010 11:06:36 +0300
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/****************************************************************************
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**
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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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#include "qfont.h"
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#include "qfont_p.h"
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#include "qfontengine_p.h"
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#include "qtextengine_p.h"
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#include "qfontmetrics.h"
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#include "qfontinfo.h"
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#include "qwidget.h"
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#include "qpainter.h"
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#include <limits.h>
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#include "qt_windows.h"
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#include <private/qapplication_p.h>
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#include "qapplication.h"
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#include <private/qunicodetables_p.h>
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#include <qfontdatabase.h>
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QT_BEGIN_NAMESPACE
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extern HDC   shared_dc();                // common dc for all fonts
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// ### maybe move to qapplication_win
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QFont qt_LOGFONTtoQFont(LOGFONT& lf, bool /*scale*/)
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{
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    QString family = QString::fromWCharArray(lf.lfFaceName);
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    QFont qf(family);
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    qf.setItalic(lf.lfItalic);
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    if (lf.lfWeight != FW_DONTCARE) {
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        int weight;
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        if (lf.lfWeight < 400)
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            weight = QFont::Light;
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        else if (lf.lfWeight < 600)
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            weight = QFont::Normal;
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        else if (lf.lfWeight < 700)
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            weight = QFont::DemiBold;
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        else if (lf.lfWeight < 800)
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            weight = QFont::Bold;
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        else
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            weight = QFont::Black;
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        qf.setWeight(weight);
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    }
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    int lfh = qAbs(lf.lfHeight);
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    qf.setPointSizeF(lfh * 72.0 / GetDeviceCaps(shared_dc(),LOGPIXELSY));
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    qf.setUnderline(false);
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    qf.setOverline(false);
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    qf.setStrikeOut(false);
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    return qf;
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}
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static inline float pixelSize(const QFontDef &request, int dpi)
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{
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    float pSize;
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    if (request.pointSize != -1)
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        pSize = request.pointSize * dpi/ 72.;
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    else
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        pSize = request.pixelSize;
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    return pSize;
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}
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static inline float pointSize(const QFontDef &fd, int dpi)
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{
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    float pSize;
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    if (fd.pointSize < 0)
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        pSize = fd.pixelSize * 72. / ((float)dpi);
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    else
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        pSize = fd.pointSize;
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    return pSize;
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}
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/*****************************************************************************
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  QFont member functions
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 *****************************************************************************/
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void QFont::initialize()
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{
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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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HFONT 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::Win)
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	return static_cast<QFontEngineWin *>(engine)->hfont;
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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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    return family();
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}
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void QFont::setRawName(const QString &name)
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{
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    setFamily(name);
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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 New Roman");
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        case QFont::Courier:
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            return QString::fromLatin1("Courier New");
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        case QFont::Decorative:
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            return QString::fromLatin1("Bookman Old Style");
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        case QFont::Helvetica:
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            return QString::fromLatin1("Arial");
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        case QFont::System:
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        default:
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            return QString::fromLatin1("MS Sans Serif");
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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::lastResortFont() const
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{
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    return QString::fromLatin1("arial");
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}
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QT_END_NAMESPACE