fontmanager.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.7平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifdef QWS
#include "fontmanager.h"
#include <qfile.h>
#include <stdlib.h>
#include <qgfx_qws.h>
#ifdef Q_OS_WIN32
#include <qtopia/qpeapplication.h>
#include <qdir.h>
#endif



/*! internal
    Determine where unicode fonts are installed
*/
static QString unicodeFontDirPath()
{
#ifndef Q_OS_WIN32
    QString fontDir = getenv("QTDIR") + QString("/lib/fonts/");
#else
    QString fontDir, qtDir;
    if ( getenv("QTDIR") )
	qtDir = QString(getenv("QTDIR")).stripWhiteSpace();
    if ( qtDir.isEmpty() )
	fontDir = QPEApplication::qpeDir();
    else
	fontDir = qtDir + QDir::separator();
    QDir d(fontDir + "lib/fonts/");
    if (d.exists())
	fontDir.append("lib/fonts/");
    else
	fontDir.append("dist/embedded/lib/fonts/"); // internal development
#endif
    return fontDir;
}

/*
    QFontInfo doesn't work in QWS at the moment,
    otherwise we would just have used that to check
    the real values
    
     For now, there are only two Unicode fonts in
     the known universe...
    
*/

bool FontManager::hasUnicodeFont()
{
    QString fontDir = unicodeFontDirPath();
    QString suffix;
    if ( qt_screen->isTransformed() ) {
	suffix += "_t";
	QPoint a = qt_screen->mapToDevice(QPoint(0,0),QSize(2,2));
	QPoint b = qt_screen->mapToDevice(QPoint(1,1),QSize(2,2));
	suffix += QString::number( a.x()*8+a.y()*4+(1-b.x())*2+(1-b.y()) );
    }
    suffix += ".qpf";

    return QFile::exists( fontDir+"cyberbit_120_50"+suffix )
	|| QFile::exists( fontDir+"unifont_160_50"+suffix ) ||
	QFile::exists( fontDir+"arial_140_50" + suffix );
}

QFont FontManager::unicodeFont( Spacing sp )
{
    QString key;
    QString fontName;
    QString fontDir = unicodeFontDirPath();

    int size;
    if ( sp == Proportional ) {
	fontName = "Arial";
	size=14;
	key = "arial_140_50";
    } else {
	fontName = "Unifont";
	size=16;
	key = "unifont_160_50";
    }
	
    QString suffix;
    if ( qt_screen->isTransformed() ) {
	suffix += "_t";
	QPoint a = qt_screen->mapToDevice(QPoint(0,0),QSize(2,2));
	QPoint b = qt_screen->mapToDevice(QPoint(1,1),QSize(2,2));
	suffix += QString::number( a.x()*8+a.y()*4+(1-b.x())*2+(1-b.y()) );
    }
    suffix += ".qpf";

    // if we cannot find it, try the other one
	
    if ( !QFile::exists(fontDir+key+suffix) ) {
	key = (sp == Fixed ) ? "arial_140_50" : "unifont_160_50";
	if ( QFile::exists(fontDir+key+suffix) ) {
	    fontName = (sp == Fixed) ? "Arial" : "Unifont";
	    size = (sp == Fixed) ? 14 : 16;
	} else {
	    key = "cyberbit_120_50";
	    if ( QFile::exists(fontDir+key+suffix) ) {
		fontName = "Cyberbit";
		size = 12;
	    } else {
		fontName = "Helvetica"; // No tr
		size = 14;
	    }
	}
    }
    return QFont(fontName,size);
}
#endif