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new.py
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new.py
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import os
import glob
import json
import time
from .scheduler import Scheduler
from watchdog.observers import Observer
from watchdog.events import PatternMatchingEventHandler
from qgis.PyQt.QtCore import QSettings, Qt
from qgis.PyQt.QtWidgets import QDialog, QDialogButtonBox
from qgis.core import QgsApplication, QgsMessageLog, Qgis, QgsTask
class ObserverTask(QgsTask):
def __init__(self, desc, observer):
QgsTask.__init__(self, desc, QgsTask.CanCancel)
self.observer = observer
self._continue = True
self._interval = 2.5
def stop(self):
self._continue = False
def run(self):
time.sleep(2*self._interval)
self.observer.start()
try:
while self._continue:
QgsMessageLog.logMessage(
"ObserverTask -> watching...",
tag="OAW", level=Qgis.Info)
if self.isCanceled():
self.observer.stop()
return True
time.sleep(self._interval)
except KeyboardInterrupt:
self.observer.stop()
self.observer.join()
self.observer.stop()
return True
class NewWidget:
def __init__(self, container):
"""
Constructor
:param container: panel widget instance
"""
QgsMessageLog.logMessage("Initialize NewWidget", tag="OAW", level=Qgis.Info)
self._container = container
self._container.lbl_slots_count.setText(
str(self._container.get_settings().get_attribute('MaxConcurrentJobs', ''))
)
patterns = ["*.tif.points", "*.tif"]
ignore_patterns = []
ignore_directories = True
case_sensitive = True
self.event_handler = PatternMatchingEventHandler(patterns, ignore_patterns, ignore_directories, case_sensitive)
self.event_handler.on_created = self.on_raster_created
self.event_handler.on_deleted = self.on_raster_deleted
self.event_handler.on_modified = self.on_raster_modified
self.event_handler.on_moved = self.on_raster_moved
self.observer = None
self.observer_task = None
self._raster_list = []
self._folder = ""
self._container.chk_watch_src_folder.stateChanged.connect(self.watch_state_changed)
self._container.button_box_new.button(QDialogButtonBox.Apply).clicked.connect(self.queue_raster)
self.watch_state_changed()
self._current_settings = None
def on_settings_changed(self, settings):
self._current_settings = settings
self.get_raster_list()
def on_slots_changed(self, data):
self._container.lbl_slots_count.setText(str(data["value"]))
def get_folder(self):
self._folder = self._current_settings["source_folder"]
return self._folder
def watch_state_changed(self):
state = self._container.chk_watch_src_folder.checkState()
if state == Qt.Unchecked and self.observer_task is not None:
self.observer_task.stop()
elif state == Qt.Checked:
self.get_raster_list()
self.set_observer()
self.observer_task = ObserverTask("OAW Watcher source folder", self.observer)
QgsApplication.taskManager().addTask(self.observer_task)
QgsMessageLog.logMessage(
"Watch state: " + str(state),
tag="OAW", level=Qgis.Info)
def set_observer(self):
QgsMessageLog.logMessage(
"Setting observer",
tag="OAW", level=Qgis.Info)
self.observer = Observer()
self.observer.schedule(self.event_handler, self.get_folder(), recursive=False)
def get_raster_list(self):
"""
Get the the list of rasters (and points) from the source folder directory
:return:
"""
self._raster_list = []
try:
self._container.cbo_raster.clear()
os.chdir(self.get_folder())
files = sorted(glob.glob("*.tif.points"))
for file in files:
self.add_raster(file)
except:
pass
def check_raster_file(self, file):
pts_file = ""
tif_file = ""
if file.endswith(".tif.points"):
tif_file = file.replace(".tif.points", ".tif")
pts_file = file
if file.endswith(".tif"):
tif_file = file
pts_file = file.replace(".tif", ".tif.points")
if os.path.isfile(tif_file) and os.path.exists(pts_file):
return tif_file
return None
def add_raster(self, file):
tif_file = self.check_raster_file(file)
if tif_file is not None:
QgsMessageLog.logMessage(
"add_raster => " + tif_file,
tag="OAW", level=Qgis.Info)
base = os.path.basename(tif_file)
name = os.path.splitext(base)[0]
if name not in self._raster_list:
self._raster_list.append(name)
self._container.cbo_raster.addItem(name)
QgsMessageLog.logMessage(' '.join(self._raster_list), tag="OAW", level=Qgis.Info)
def del_raster(self, file):
tif_file = file.replace(".tif.points", ".tif")
QgsMessageLog.logMessage(
"del_raster => " + tif_file,
tag="OAW", level=Qgis.Info)
base = os.path.basename(tif_file)
name = os.path.splitext(base)[0]
if name in self._raster_list:
self._raster_list.remove(name)
index = self._container.cbo_raster.findText(name)
self._container.cbo_raster.removeItem(index)
def on_raster_created(self, event):
try:
QgsMessageLog.logMessage(
f"NewWidget.on_raster_created => {event.src_path} has been created!",
tag="OAW", level=Qgis.Info)
self.add_raster(event.src_path)
except Exception as e:
QgsMessageLog.logMessage(
str(e),
tag="OAW", level=Qgis.Warning)
def on_raster_deleted(self, event):
try:
QgsMessageLog.logMessage(
f"NewWidget.on_raster_deleted => deleted {event.src_path}!",
tag="OAW", level=Qgis.Info)
self.del_raster(event.src_path)
except Exception as e:
QgsMessageLog.logMessage(
str(e),
tag="OAW", level=Qgis.Warning)
def on_raster_modified(self, event):
QgsMessageLog.logMessage(
f"NewWidget.on_raster_modified => {event.src_path} has been modified",
tag="OAW", level=Qgis.Info)
def on_raster_moved(self, event):
try:
QgsMessageLog.logMessage(
f"NewWidget.on_raster_moved => moved {event.src_path} to {event.dest_path}",
tag="OAW", level=Qgis.Info)
self.del_raster(event.src_path)
self.add_raster(event.dest_path)
except Exception as e:
QgsMessageLog.logMessage(
str(e),
tag="OAW", level=Qgis.Warning)
def queue_raster(self):
raster = self._container.cbo_raster.currentText()
if raster == "" or raster is None:
self._container.push_message("No raster selected!", level=Qgis.Warning)
return
QgsMessageLog.logMessage(
f"NewWidget.queue_raster => %s" % raster,
tag="OAW", level=Qgis.Info)
options = self._container.get_settings().get_dict()
options["name"] = raster
Scheduler.GET_INSTANCE().queue(options)
if self._container.chk_watch_src_folder.checkState() == Qt.Unchecked:
self.get_raster_list()
QgsMessageLog.logMessage(
f"NewWidget.queue_raster => %s" % json.dumps(options),
tag="OAW", level=Qgis.Info)
self._container.push_message("Raster %s queued!" % raster, level=Qgis.Info)