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telemetrylayerplugin.py
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telemetrylayerplugin.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
Telemetry Layer
A QGIS plugin
-------------------
begin : 2014-05-30
copyright : (C) 2014 by Andrew McClure
email : andrew@agsense.co.nz
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
Todo:
- Remove topic manager framwork
- Add dockwidget handler for showing details
- Replace with simple API based on @qgsfunc
i.e.
@qgsfunction(0, u"Telemetry Layer")
def tank(values, feature, parent,api = 'default'):
# where API options are:
- definition => return {name:<Group Name>;description: <Description>; alertable:boolean; configurable:boolean}
- default => print label
- widget => print widget output
- config => print widget output
"""
from PyQt4 import QtCore
from PyQt4.QtCore import pyqtSlot, SIGNAL, SLOT
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
from qgis.gui import QgsMapToolEmitPoint
import pdb
# Initialize Qt resources from file resources.py
import os.path, sys, time, traceback, gc
import webbrowser
import resources_rc
# Import the code for the dialog
from tlbrokers import tlBrokers as Brokers
from telemetrylayermanager import layerManager
from lib.tlsettings import tlSettings as Settings
from lib.tllogging import tlLogging as Log
from telemetrylayer import TelemetryLayer
from tltopicmanagerfactory import tlTopicManagerFactory as TopicManagerFactory
import NewMemoryLayer
import sys, os
class TelemetryLayerPlugin(QObject):
"""
Plugin Class - providing hook into QGIS core; starting point for setup and teardown;
including creation of menu/icon actions.
Todo: Alternative host name selection
Username password for MQTT Broker
"""
def __init__(self, iface):
# Save reference to the QGIS interface
super(TelemetryLayerPlugin, self).__init__(iface)
self.iface = iface
# initialize plugin directory
self.plugin_dir = os.path.dirname(__file__)
sys.path.append(os.path.join(self.plugin_dir, "topicmanagers"))
self.layerManager = None
self.installed = False
self.configureDlg = None
self.plugin_basename = str(os.path.basename(self.plugin_dir))
self.state="Init"
# Initialise Settings and Log handlers
try:
Settings(self)
Log(self)
Log.debug("Loading Topic Managers")
TopicManagerFactory(iface)
Log.debug("Topic Managers Loaded")
Brokers(os.path.join(self.plugin_dir, 'data'))
Log.debug("Brokers Loaded")
except Exception as e:
Log.critical("Error on Plugin initialization " + str(e))
exc_type, exc_value, exc_traceback = sys.exc_info()
Log.debug(repr(traceback.format_exception(exc_type, exc_value,
exc_traceback)))
# initialize locale
self.translator = QTranslator()
if QSettings().value("locale/userLocale"):
locale = QSettings().value("locale/userLocale")[0:2]
localePath = os.path.join(self.plugin_dir, 'i18n', 'telemetrylayer_{}.qm'.format(locale))
if os.path.exists(localePath):
self.translator.load(localePath)
if qVersion() > '4.3.3':
QCoreApplication.installTranslator(self.translator)
def initGui(self):
# Create action that will start plugin configuration
self.aboutA = QAction(
QIcon(":/plugins/" + self.plugin_basename + "/icons/agsense.png"),
"About", self.iface.mainWindow()) # Replace or Add About
# connect the action to the run method
self.aboutA.triggered.connect(self.about)
self.configureA = QAction(
QIcon(":/plugins/" + self.plugin_basename + "/icons/icon.png"),
"Configure", self.iface.mainWindow()) # Replace or Add About
# connect the action to the run method
self.configureA.triggered.connect(self.configure)
# From New Memory Layer plugin
lMenuTitle = 'New Telemetry Layer...'
self.newLayerA = QAction(
QIcon(":/plugins/" + self.plugin_basename + "/icons/icon.png"),
lMenuTitle, self.iface.mainWindow())
QObject.connect(self.newLayerA, SIGNAL("triggered()"), self.createLayer)
self.iface.newLayerMenu().addAction(self.newLayerA) # API >= 1.9
self.iface.registerMainWindowAction(self.newLayerA, "Shift+Ctrl+T")
try:
Log.debug("Loading Layer Manager")
self.layerManager = layerManager(self)
Log.debug("Layer Manager Loaded")
self.telemetryLayer = TelemetryLayer(self)
Log.debug(Settings.getMeta("name") + ": Loaded")
self.iface.projectRead.connect(self.layerManager.rebuildLegend)
self.iface.newProjectCreated.connect(self.layerManager.rebuildLegend)
Brokers.instance().brokersLoaded.connect(self.layerManager.brokersLoaded)
#Log.debug(TelemetryLayer.instance()._layerManager.getTLayers(False).iteritems())
except Exception as e:
Log.critical(Settings.getMeta("name") + ": There was a problem loading the layer manager")
exc_type, exc_value, exc_traceback = sys.exc_info()
Log.debug(repr(traceback.format_exception(exc_type, exc_value,
exc_traceback)))
# Add toolbar button and menu item
self.iface.addToolBarIcon(self.aboutA)
self.iface.addToolBarIcon(self.configureA)
self.iface.addPluginToMenu(u"&Telemetry Layer", self.aboutA)
self.iface.addPluginToMenu(u"&Telemetry Layer", self.configureA)
self.installed = True
mw = self.iface.mainWindow()
# lgd.setContextMenuPolicy(QtCore.Qt.ActionsContextMenu);
def unload(self):
# Remove the plugin menu item and icon
if not self.installed:
return
try:
self.runTeardown()
self.iface.removePluginMenu(u"&Telemetry Layer", self.aboutA)
self.iface.removePluginMenu(u"&Telemetry Layer", self.configureA)
self.iface.removeToolBarIcon(self.aboutA)
self.iface.removeToolBarIcon(self.configureA)
self.iface.newLayerMenu().removeAction(self.newLayerA) # API >= 1.9
self.iface.projectRead.disconnect(self.layerManager.rebuildLegend)
self.iface.newProjectCreated.disconnect(self.layerManager.rebuildLegend)
#Brokers.instance().brokersLoaded.disconnect(self.layerManager.brokersLoaded)
except Exception as e:
Log.debug(e)
pass
finally:
if self.layerManager:
self.layerManager.deleteLater()
if self.telemetryLayer:
self.telemetryLayer.deleteLater()
if Brokers:
Brokers.instance().deleteLater()
TopicManagerFactory.tearDown()
gc.collect()
Log.debug("Plugin unloaded")
def runTeardown(self):
try:
self.layerManager.tearDown()
self.telemetryLayer.tearDown()
except Exception as e:
Log.debug(e)
pass
def about(self):
webbrowser.open(Settings.getMeta("homepage"))
# for broker in Brokers.instance().list():
# Log.debug(broker.topicManager())
# return
def configure(self):
self.telemetryLayer.instance().show()
def createLayer(self):
if self.layerManager is not None:
self.layerManager.createEmptyLayer()
def freshInstall(self):
version = Settings.get('version')
current = Settings.getMeta('version')
return current != version