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select_files.py
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select_files.py
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# -*- coding: utf-8 -*-
"""
/***************************************************************************
SelectFiles
A QGIS plugin
Select all files with a given format in a directory.
Generated by Plugin Builder: http://g-sherman.github.io/Qgis-Plugin-Builder/
-------------------
begin : 2020-02-20
git sha : $Format:%H$
copyright : (C) 2020 by Piotr Koller
email : [email protected]
***************************************************************************/
/***************************************************************************
* *
* 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.core import QgsProject,QgsVectorLayer,QgsRasterLayer
from qgis.PyQt.QtCore import QSettings, QTranslator, QCoreApplication
from qgis.PyQt.QtGui import QIcon
from qgis.PyQt.QtWidgets import QAction
from qgis.utils import iface
from PyQt5.QtWidgets import QAction, QFileDialog
# Initialize Qt resources from file resources.py
from .resources import *
# Import the code for the dialog
from .select_files_dialog import SelectFilesDialog
import os.path
class SelectFiles:
"""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',
'SelectFiles_{}.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'&SelectFiles')
# 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
# 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('SelectFiles', 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 = ':/plugins/select_files/icon.png'
self.add_action(
icon_path,
text=self.tr(u'Select files'),
callback=self.run,
parent=self.iface.mainWindow())
# will be set False in run()
self.first_start = True
def unload(self):
"""Removes the plugin menu item and icon from QGIS GUI."""
for action in self.actions:
self.iface.removePluginMenu(
self.tr(u'&SelectFiles'),
action)
self.iface.removeToolBarIcon(action)
def Upload_Directory(self):
self.filename = QFileDialog.getExistingDirectory(
self.dlg, "Select input file ","")
self.dlg.lineEdit.setText(self.filename)
def delete_layers(self):
QgsProject.instance().clear()
def selection(self):
for file in os.listdir(self.filename):
if file.endswith(self.selectedFormat) and self.selectedFormat == ".tif":
layer = QgsRasterLayer(os.path.join(self.filename, file),file.split(".")[0])
QgsProject.instance().addMapLayers([layer])
vLayer = iface.activeLayer()
canvas = iface.mapCanvas()
extent = vLayer.extent()
canvas.setExtent(extent)
if file.endswith(self.selectedFormat) and self.selectedFormat != ".tif":
layer = QgsVectorLayer(os.path.join(self.filename, file),file.split(".")[0],"ogr")
QgsProject.instance().addMapLayers([layer])
def index_changed(self):
self.selectedFileIndex = self.dlg.comboBox.currentIndex()
self.selectedFormat = self.datatypes[self.selectedFileIndex]
def run(self):
"""Run method that performs all the real work"""
# Create the dialog with elements (after translation) and keep reference
# Only create GUI ONCE in callback, so that it will only load when the plugin is started
if self.first_start == True:
self.first_start = False
self.dlg = SelectFilesDialog()
self.datatypes = [".shp",".gpkg",".json",".tif"]
self.dlg.comboBox.clear()
self.dlg.comboBox.addItems(self.datatypes)
self.dlg.pushButton.clicked.connect(self.Upload_Directory)
self.dlg.pushButton_2.clicked.connect(self.delete_layers)
self.selectedFileIndex = self.dlg.comboBox.currentIndex()
self.selectedFormat = self.datatypes[self.selectedFileIndex]
self.dlg.comboBox.currentIndexChanged.connect(self.index_changed)
#self.dlg.button_box.clicked.connect(self.selection)
# show the dialog
self.dlg.show()
# Run the dialog event loop
result = self.dlg.exec_()
# See if OK was pressed
if result:
self.selection()