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Diffstat (limited to 'kworldwatch/cities.cpp')
| -rw-r--r-- | kworldwatch/cities.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/kworldwatch/cities.cpp b/kworldwatch/cities.cpp new file mode 100644 index 0000000..624c814 --- /dev/null +++ b/kworldwatch/cities.cpp @@ -0,0 +1,208 @@ +/* +** +** Copyright (C) 1998-2001 by Matthias Hölzer-Klüpfel <hoelzer@kde.org> +** Maintainence has ceased - send questions to kde-devel@kde.org. +** +*/ + +/* +** This program is free software; you can redistribute it and/or modify +** it under the terms of the GNU General Public License as published by +** the Free Software Foundation; either version 2 of the License, or +** (at your option) any later version. +** +** This program is distributed in the hope that it will be useful, +** but WITHOUT ANY WARRANTY; without even the implied warranty of +** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +** GNU General Public License for more details. +** +** You should have received a copy of the GNU General Public License +** along with this program in a file called COPYING; if not, write to +** the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, +** MA 02110-1301, USA. +*/ + +/* +** Bug reports and questions can be sent to kde-devel@kde.org +*/ +#include <qfile.h> +#include <qtextstream.h> +#include <qregexp.h> +#include <qpainter.h> + + +#include <kglobal.h> +#include <kstandarddirs.h> + + +#include "cities.h" + + +CityList::CityList() +{ + readCityLists(); +} + +CityList::~CityList() +{ + _cities.setAutoDelete(true); + _cities.clear(); +} + +void CityList::readCityLists() +{ + QStringList lists = KGlobal::dirs()->findAllResources("data", "kworldclock/*.tab"); + for (QStringList::Iterator it = lists.begin(); it != lists.end(); ++it) + readCityList(*it); +} + + +double coordinate(QString c) +{ + int neg; + int d=0, m=0, s=0; + + neg = c.left(1) == "-"; + c.remove(0,1); + + switch (c.length()) + { + case 4: + d = c.left(2).toInt(); + m = c.mid(2).toInt(); + break; + case 5: + d = c.left(3).toInt(); + m = c.mid(3).toInt(); + break; + case 6: + d = c.left(2).toInt(); + m = c.mid(2,2).toInt(); + s = c.right(2).toInt(); + break; + case 7: + d = c.left(3).toInt(); + m = c.mid(3,2).toInt(); + s = c.right(2).toInt(); + break; + default: + break; + } + + if (neg) + return - (d + m/60.0 + s/3600.0); + else + return d + m/60.0 + s/3600.0; +} + + +void CityList::readCityList(const QString &fname) +{ + QFile f(fname); + + if (f.open(IO_ReadOnly)) + { + QTextStream is(&f); + + QString line; + QStringList tags; + QRegExp coord("[+-]\\d+[+-]\\d+"); + QRegExp name("[^\\s]+/[^\\s]+"); + int pos; + while (!is.eof()) + { + line = is.readLine().stripWhiteSpace(); + if (line.isEmpty() || line.left(1) == "#") + continue; + + QString c, n; + + pos = coord.search(line, 0); + if (pos >= 0) + c = line.mid(pos, coord.matchedLength()); + + pos = name.search(line, pos); + if (pos > 0) + n = line.mid(pos, name.matchedLength()).stripWhiteSpace(); + + if (!c.isEmpty() && !n.isEmpty()) + { + double la, lo; + pos = c.find("+", 1); + if (pos < 0) + pos = c.find("-", 1); + if (pos > 0) + { + la = coordinate(c.left(pos)); + lo = coordinate(c.mid(pos)); + _cities.append(new City(n.latin1(), la, lo)); + } + } + } + + f.close(); + } +} + + +QPoint CityList::getPosition(double la, double lo, int w, int h, int offset) +{ + int x = (int)((double)w * (180.0 + lo) / 360.0); + int y = (int)((double)h * (90.0 - la) / 180.0); + x = (x + offset + w/2) % w; + + return QPoint(x,y); +} + + +void CityList::paint(QPainter *p, int width, int height, int offset) +{ + p->setPen(Qt::black); + + QPtrListIterator<City> it(_cities); + for ( ; it.current(); ++it) + { + QPoint pos = getPosition(it.current()->latitude(), it.current()->longitude(), width, height, offset); + + if (width > 100) + p->drawEllipse(pos.x(), pos.y(), 3,3); + else + p->drawPoint(pos); + } +} + + +City *CityList::getNearestCity(int w, int h, int offset, int x, int y, QPoint &where) +{ + City *result = 0; + double dist = 1.0e10; + + QPtrListIterator<City> it(_cities); + for ( ; it.current(); ++it) + { + QPoint pos = getPosition(it.current()->latitude(), it.current()->longitude(), w, h, offset); + + double d = (pos.x()-x)*(pos.x()-x) + (pos.y()-y)*(pos.y()-y); + if (d < dist) + { + dist = d; + where = pos; + result = it.current(); + } + } + + return result; +} + + +QStringList CityList::timezones() +{ + QStringList r; + + QPtrListIterator<City> it(_cities); + for ( ; it.current(); ++it) + r << it.current()->name(); + r.sort(); + + return r; +} |