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world_from_space.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
World from Space
A QGIS plugin
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2020-08-04
git sha : $Format:%H$
copyright : (C) 2020 by Test
email : test
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
"""
from qgis.PyQt.QtWidgets import *
from qgis.PyQt.QtCore import *
from qgis.PyQt.QtGui import *
from qgis.core import *
from qgis.gui import *
# Import the code for the dialog
from .world_from_space_widget import WorldFromSpaceWidget
import os
from shutil import copy
from .connect import *
class WorldFromSpace:
"""QGIS Plugin Implementation."""
def __init__(self, iface):
"""Constructor.
:param iface: An interface instance that will be passed to this class
which provides the hook by which you can manipulate the QGIS
application at run time.
:type iface: QgsInterface
"""
# Save reference to the QGIS interface
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
# initialize locale
locale = QSettings().value('locale/userLocale')[0:2]
locale_path = os.path.join(
self.plugin_dir,
'i18n',
'world_from_space_plugin_{}.qm'.format(locale))
if os.path.exists(locale_path):
self.translator = QTranslator()
self.translator.load(locale_path)
QCoreApplication.installTranslator(self.translator)
# Declare instance attributes
self.actions = []
self.menu = self.tr(u'&DynaCrop')
# Check if plugin was started the first time in current QGIS session
# Must be set in initGui() to survive plugin reloads
self.first_start = None
self.dockWidget = None
# noinspection PyMethodMayBeStatic
def tr(self, message):
"""Get the translation for a string using Qt translation API.
We implement this ourselves since we do not inherit QObject.
:param message: String for translation.
:type message: str, QString
:returns: Translated version of message.
:rtype: QString
"""
# noinspection PyTypeChecker,PyArgumentList,PyCallByClass
return QCoreApplication.translate('DynaCrop', message)
def add_action(
self,
icon_path,
text,
callback,
enabled_flag=True,
add_to_menu=True,
add_to_toolbar=True,
status_tip=None,
whats_this=None,
parent=None):
"""Add a toolbar icon to the toolbar.
:param icon_path: Path to the icon for this action. Can be a resource
path (e.g. ':/plugins/foo/bar.png') or a normal file system path.
:type icon_path: str
:param text: Text that should be shown in menu items for this action.
:type text: str
:param callback: Function to be called when the action is triggered.
:type callback: function
:param enabled_flag: A flag indicating if the action should be enabled
by default. Defaults to True.
:type enabled_flag: bool
:param add_to_menu: Flag indicating whether the action should also
be added to the menu. Defaults to True.
:type add_to_menu: bool
:param add_to_toolbar: Flag indicating whether the action should also
be added to the toolbar. Defaults to True.
:type add_to_toolbar: bool
:param status_tip: Optional text to show in a popup when mouse pointer
hovers over the action.
:type status_tip: str
:param parent: Parent widget for the new action. Defaults None.
:type parent: QWidget
:param whats_this: Optional text to show in the status bar when the
mouse pointer hovers over the action.
:returns: The action that was created. Note that the action is also
added to self.actions list.
:rtype: QAction
"""
icon = QIcon(icon_path)
action = QAction(icon, text, parent)
action.triggered.connect(callback)
action.setEnabled(enabled_flag)
if status_tip is not None:
action.setStatusTip(status_tip)
if whats_this is not None:
action.setWhatsThis(whats_this)
if add_to_toolbar:
# Adds plugin icon to Plugins toolbar
self.iface.addToolBarIcon(action)
if add_to_menu:
self.iface.addPluginToMenu(
self.menu,
action)
self.actions.append(action)
return action
def initGui(self):
"""Create the menu entries and toolbar icons inside the QGIS GUI."""
icon_path = os.path.join(
os.path.dirname(__file__), 'icon.png')
self.add_action(
icon_path,
text=self.tr(u'Show DynaCrop widget'),
callback=self.run,
parent=self.iface.mainWindow())
# will be set False in run()
self.first_start = True
self.checkSettings()
settingsPath = self.pluginPath + "/../../../qgis_world_from_space_settings"
self.checkRequests = CheckRequests(settingsPath)
self.checkRequests.statusChanged.connect(self.onProgressStatusChanged)
self.checkRequests.start()
def onProgressStatusChanged(self, response):
# print("onProgressStatusChanged")
# print(response.data)
if self.dockWidget is not None:
if response.data == -1:
self.dockWidget.cancelRequest()
else:
self.dockWidget.onProgressStatusChanged(response.data)
def checkSettings(self):
"""
Checks if the directories and files for settings and jobs does not exist and creates them.
:return:
"""
self.pluginPath = os.path.dirname(__file__)
profilePath = self.pluginPath + "/../../../"
if not os.path.isdir(profilePath + "qgis_world_from_space_settings"):
os.mkdir(profilePath + "qgis_world_from_space_settings")
if not os.path.isfile(profilePath + "qgis_world_from_space_settings/registered_polygons.gpkg"):
copy(self.pluginPath + "/data/registered_polygons.gpkg", profilePath + "qgis_world_from_space_settings/registered_polygons.gpkg")
if not os.path.isdir(profilePath + "qgis_world_from_space_settings/requests/polygons"):
os.makedirs(profilePath + "qgis_world_from_space_settings/requests/polygons")
if not os.path.isdir(profilePath + "qgis_world_from_space_settings/requests/jobs"):
os.makedirs(profilePath + "qgis_world_from_space_settings/requests/jobs")
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
if self.dockWidget is not None:
self.dockWidget.setVisible(False)
# TODO maybe wait until the thread stops
if self.checkRequests is not None:
self.checkRequests.stopMe()
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&DynaCrop'),
action)
self.iface.removeToolBarIcon(action)
def run(self):
"""Run method that performs all the real work"""
if self.dockWidget is None:
self.dockWidget = WorldFromSpaceWidget(self.iface, None)
self.dockWidget.setMinimumSize(QSize(384, 439))
self.iface.addDockWidget(Qt.LeftDockWidgetArea, self.dockWidget)
else:
# If the widget is already loaded just show it.
self.dockWidget.setVisible(True)