qtiles.py

# -*- coding: utf-8 -*-

#******************************************************************************
#
# QTiles
# ---------------------------------------------------------
# Generates tiles from QGIS project
#
# Copyright (C) 2012-2014 NextGIS (info@nextgis.org)
# Copyright (C) 2019 Alexander Bruy (alexander.bruy@gmail.com)
#
# This source 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 code 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.
#
# A copy of the GNU General Public License is available on the World Wide Web
# at <http://www.gnu.org/licenses/>. You can also obtain it by writing
# to the Free Software Foundation, 51 Franklin Street, Suite 500 Boston,
# MA 02110-1335 USA.
#
#******************************************************************************

from qgis.PyQt.QtCore import QFileInfo, QLocale, QTranslator, QCoreApplication
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt.QtWidgets import QMessageBox, QAction
from qgis.core import Qgis, QgsApplication, QgsSettings

from . import resources_rc
from .aboutdialog import AboutDialog
from .qtilesdialog import QTilesDialog


class QTilesPlugin:
    def __init__(self, iface):
        self.iface = iface

        self.qgsVersion = str(Qgis.QGIS_VERSION_INT)

        userPluginPath = QFileInfo(QgsApplication.qgisUserDatabaseFilePath()).path() + '/python/plugins/qtiles'
        systemPluginPath = QgsApplication.prefixPath() + '/python/plugins/qtiles'

        overrideLocale = QgsSettings().value('locale/overrideFlag', False, type=bool)
        if not overrideLocale:
            localeFullName = QLocale.system().name()
        else:
            localeFullName = QgsSettings().value('locale/userLocale', '')

        if QFileInfo(userPluginPath).exists():
            translationPath = userPluginPath + '/i18n/qtiles_' + localeFullName + '.qm'
        else:
            translationPath = systemPluginPath + '/i18n/qtiles_' + localeFullName + '.qm'

        self.localePath = translationPath
        if QFileInfo(self.localePath).exists():
            self.translator = QTranslator()
            self.translator.load(self.localePath)
            QCoreApplication.installTranslator(self.translator)

    def initGui(self):
        if int(self.qgsVersion) < 20000:
            qgisVersion = self.qgsVersion[0] + '.' + self.qgsVersion[2] + '.' + self.qgsVersion[3]
            QMessageBox.warning(self.iface.mainWindow(), QCoreApplication.translate('QTiles', 'Error'), QCoreApplication.translate('QTiles', 'QGIS %s detected.\n') % qgisVersion + QCoreApplication.translate('QTiles', 'This version of QTiles requires at least QGIS 2.0. Plugin will not be enabled.'))
            return None

        self.actionRun = QAction(QCoreApplication.translate('QTiles', 'QTiles'), self.iface.mainWindow())
        self.iface.registerMainWindowAction(self.actionRun, 'Shift+T')
        self.actionRun.setIcon(QIcon(':/icons/qtiles.png'))
        self.actionRun.setWhatsThis('Generate tiles from current project')
        self.actionAbout = QAction(QCoreApplication.translate('QTiles', 'About QTiles...'), self.iface.mainWindow())
        self.actionAbout.setIcon(QIcon(':/icons/about.png'))
        self.actionAbout.setWhatsThis('About QTiles')

        self.iface.addPluginToMenu(QCoreApplication.translate('QTiles', 'QTiles'), self.actionRun)
        self.iface.addPluginToMenu(QCoreApplication.translate('QTiles', 'QTiles'), self.actionAbout)
        self.iface.addToolBarIcon(self.actionRun)

        self.actionRun.triggered.connect(self.run)
        self.actionAbout.triggered.connect(self.about)

    def unload(self):
        self.iface.unregisterMainWindowAction(self.actionRun)

        self.iface.removeToolBarIcon(self.actionRun)
        self.iface.removePluginMenu(QCoreApplication.translate('QTiles', 'QTiles'), self.actionRun)
        self.iface.removePluginMenu(QCoreApplication.translate('QTiles', 'QTiles'), self.actionAbout)

    def run(self):
        d = QTilesDialog(self.iface)
        d.show()
        d.exec_()

    def about(self):
        d = AboutDialog()
        d.exec_()