mapnik/demo/viewer/main.cpp
2024-07-22 10:20:47 +01:00

96 lines
3.2 KiB
C++

/* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2024 Artem Pavlenko
*
* Mapnik 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 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; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
// qt
#include <QApplication>
#include <QStringList>
#include <QSettings>
#include <mapnik/datasource_cache.hpp>
#include <mapnik/font_engine_freetype.hpp>
#include <mapnik/mapnik.hpp>
#include "mainwindow.hpp"
int main(int argc, char** argv)
{
using mapnik::datasource_cache;
using mapnik::freetype_engine;
mapnik::setup();
try
{
#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
#endif
QCoreApplication::setOrganizationName("Mapnik");
QCoreApplication::setOrganizationDomain("mapnik.org");
QCoreApplication::setApplicationName("Viewer");
QSettings settings("viewer.ini", QSettings::IniFormat);
// register input plug-ins
QString plugins_dir = settings.value("mapnik/plugins_dir", QVariant("/usr/local/lib/mapnik/input/")).toString();
datasource_cache::instance().register_datasources(plugins_dir.toStdString());
// register fonts
int count = settings.beginReadArray("mapnik/fonts");
for (int index = 0; index < count; ++index)
{
settings.setArrayIndex(index);
QString font_dir = settings.value("dir").toString();
freetype_engine::register_fonts(font_dir.toStdString());
}
settings.endArray();
QApplication app(argc, argv);
MainWindow window;
window.show();
if (argc > 1)
window.open(argv[1]);
if (argc >= 3)
{
QStringList list = QString(argv[2]).split(",");
if (list.size() == 4)
{
bool ok;
double x0 = list[0].toDouble(&ok);
double y0 = list[1].toDouble(&ok);
double x1 = list[2].toDouble(&ok);
double y1 = list[3].toDouble(&ok);
if (ok)
window.set_default_extent(x0, y0, x1, y1);
}
}
else
{
std::shared_ptr<mapnik::Map> map = window.get_map();
if (map)
map->zoom_all();
}
if (argc == 4)
{
bool ok;
double scaling_factor = QString(argv[3]).toDouble(&ok);
if (ok)
window.set_scaling_factor(scaling_factor);
}
return app.exec();
}
catch (std::exception const& ex)
{
std::cerr << "Could not start viewer: '" << ex.what() << "'\n";
return 1;
}
}