# -*- coding: utf-8 -*- """ *************************************************************************** OutputSelectionPanel.py --------------------- Date : August 2012 Copyright : (C) 2012 by Victor Olaya Email : volayaf at gmail dot com *************************************************************************** * * * 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. * * * *************************************************************************** """ __author__ = 'Victor Olaya' __date__ = 'August 2012' __copyright__ = '(C) 2012, Victor Olaya' # This will get replaced with a git SHA1 when you do a git archive __revision__ = '$Format:%H$' import re import os from qgis.PyQt import uic from qgis.PyQt.QtCore import QCoreApplication, QDir from qgis.PyQt.QtWidgets import QDialog, QMenu, QAction, QFileDialog, QInputDialog from qgis.PyQt.QtGui import QCursor from qgis.gui import QgsEncodingSelectionDialog from qgis.core import (QgsDataSourceUri, QgsCredentials, QgsExpression, QgsSettings, QgsProcessingParameterFeatureSink, QgsProcessingParameterRasterDestination, QgsProcessingOutputLayerDefinition, QgsProcessingParameterDefinition, QgsProcessingParameterFileDestination, QgsProcessingParameterFolderDestination) from processing.core.ProcessingConfig import ProcessingConfig from processing.tools.dataobjects import createContext from processing.gui.PostgisTableSelector import PostgisTableSelector from processing.gui.ParameterGuiUtils import getFileFilter pluginPath = os.path.split(os.path.dirname(__file__))[0] WIDGET, BASE = uic.loadUiType( os.path.join(pluginPath, 'ui', 'widgetBaseSelector.ui')) class DestinationSelectionPanel(BASE, WIDGET): SAVE_TO_TEMP_FILE = QCoreApplication.translate( 'DestinationSelectionPanel', '[Save to temporary file]') SAVE_TO_TEMP_LAYER = QCoreApplication.translate( 'DestinationSelectionPanel', '[Create temporary layer]') SKIP_OUTPUT = QCoreApplication.translate( 'DestinationSelectionPanel', '[Skip output]') def __init__(self, parameter, alg): super(DestinationSelectionPanel, self).__init__(None) self.setupUi(self) self.parameter = parameter self.alg = alg settings = QgsSettings() self.encoding = settings.value('/Processing/encoding', 'System') self.use_temporary = True if hasattr(self.leText, 'setPlaceholderText'): if parameter.flags() & QgsProcessingParameterDefinition.FlagOptional and not parameter.createByDefault(): self.leText.setPlaceholderText(self.SKIP_OUTPUT) self.use_temporary = False elif isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and self.parameter.supportsNonFileBasedOutput(): # use memory layers for temporary files if supported self.leText.setPlaceholderText(self.SAVE_TO_TEMP_LAYER) elif not isinstance(self.parameter, QgsProcessingParameterFolderDestination): self.leText.setPlaceholderText(self.SAVE_TO_TEMP_FILE) self.btnSelect.clicked.connect(self.selectOutput) self.leText.textEdited.connect(self.textChanged) def textChanged(self): self.use_temporary = False def skipOutput(self): self.leText.setPlaceholderText(self.SKIP_OUTPUT) self.leText.setText('') self.use_temporary = False def selectOutput(self): if isinstance(self.parameter, QgsProcessingParameterFolderDestination): self.selectDirectory() else: popupMenu = QMenu() if self.parameter.flags() & QgsProcessingParameterDefinition.FlagOptional: actionSkipOutput = QAction( self.tr('Skip Output'), self.btnSelect) actionSkipOutput.triggered.connect(self.skipOutput) popupMenu.addAction(actionSkipOutput) if isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and self.parameter.supportsNonFileBasedOutput(): # use memory layers for temporary layers if supported actionSaveToTemp = QAction( self.tr('Create Temporary Layer'), self.btnSelect) else: actionSaveToTemp = QAction( self.tr('Save to a Temporary File'), self.btnSelect) actionSaveToTemp.triggered.connect(self.saveToTemporary) popupMenu.addAction(actionSaveToTemp) actionSaveToFile = QAction( QCoreApplication.translate('DestinationSelectionPanel', 'Save to File…'), self.btnSelect) actionSaveToFile.triggered.connect(self.selectFile) popupMenu.addAction(actionSaveToFile) if isinstance(self.parameter, QgsProcessingParameterFeatureSink) \ and self.parameter.supportsNonFileBasedOutput(): actionSaveToGpkg = QAction( QCoreApplication.translate('DestinationSelectionPanel', 'Save to GeoPackage…'), self.btnSelect) actionSaveToGpkg.triggered.connect(self.saveToGeopackage) popupMenu.addAction(actionSaveToGpkg) actionSaveToPostGIS = QAction( QCoreApplication.translate('DestinationSelectionPanel', 'Save to PostGIS Table…'), self.btnSelect) actionSaveToPostGIS.triggered.connect(self.saveToPostGIS) settings = QgsSettings() settings.beginGroup('/PostgreSQL/connections/') names = settings.childGroups() settings.endGroup() actionSaveToPostGIS.setEnabled(bool(names)) popupMenu.addAction(actionSaveToPostGIS) actionSetEncoding = QAction( QCoreApplication.translate('DestinationSelectionPanel', 'Change File Encoding ({})…').format(self.encoding), self.btnSelect) actionSetEncoding.triggered.connect(self.selectEncoding) popupMenu.addAction(actionSetEncoding) popupMenu.exec_(QCursor.pos()) def saveToTemporary(self): if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.supportsNonFileBasedOutput(): self.leText.setPlaceholderText(self.SAVE_TO_TEMP_LAYER) else: self.leText.setPlaceholderText(self.SAVE_TO_TEMP_FILE) self.leText.setText('') self.use_temporary = True def saveToPostGIS(self): dlg = PostgisTableSelector(self, self.parameter.name().lower()) dlg.exec_() if dlg.connection: self.use_temporary = False settings = QgsSettings() mySettings = '/PostgreSQL/connections/' + dlg.connection dbname = settings.value(mySettings + '/database') user = settings.value(mySettings + '/username') host = settings.value(mySettings + '/host') port = settings.value(mySettings + '/port') password = settings.value(mySettings + '/password') uri = QgsDataSourceUri() uri.setConnection(host, str(port), dbname, user, password) uri.setDataSource(dlg.schema, dlg.table, "the_geom" if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None) connInfo = uri.connectionInfo() (success, user, passwd) = QgsCredentials.instance().get(connInfo, None, None) if success: QgsCredentials.instance().put(connInfo, user, passwd) self.leText.setText("postgis:" + uri.uri()) def saveToGeopackage(self): file_filter = self.tr('GeoPackage files (*.gpkg);;All files (*.*)', 'OutputFile') settings = QgsSettings() if settings.contains('/Processing/LastOutputPath'): path = settings.value('/Processing/LastOutputPath') else: path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER) filename, filter = QFileDialog.getSaveFileName(self, self.tr("Save to GeoPackage"), path, file_filter, options=QFileDialog.DontConfirmOverwrite) if not filename: return layer_name, ok = QInputDialog.getText(self, self.tr('Save to GeoPackage'), self.tr('Layer name'), text=self.parameter.name().lower()) if ok: self.use_temporary = False if not filename.lower().endswith('.gpkg'): filename += '.gpkg' settings.setValue('/Processing/LastOutputPath', os.path.dirname(filename)) uri = QgsDataSourceUri() uri.setDatabase(filename) uri.setDataSource('', layer_name, 'geom' if isinstance(self.parameter, QgsProcessingParameterFeatureSink) and self.parameter.hasGeometry() else None) self.leText.setText("ogr:" + uri.uri()) def selectFile(self): file_filter = getFileFilter(self.parameter) settings = QgsSettings() if isinstance(self.parameter, QgsProcessingParameterFeatureSink): last_ext_path = '/Processing/LastVectorOutputExt' last_ext = settings.value(last_ext_path, '.gpkg') elif isinstance(self.parameter, QgsProcessingParameterRasterDestination): last_ext_path = '/Processing/LastRasterOutputExt' last_ext = settings.value(last_ext_path, '.tif') else: last_ext_path = None last_ext = None # get default filter filters = file_filter.split(';;') try: last_filter = [f for f in filters if '*{}'.format(last_ext) in f.lower()][0] except: last_filter = None if settings.contains('/Processing/LastOutputPath'): path = settings.value('/Processing/LastOutputPath') else: path = ProcessingConfig.getSetting(ProcessingConfig.OUTPUT_FOLDER) filename, filter = QFileDialog.getSaveFileName(self, self.tr("Save file"), path, file_filter, last_filter) if filename: self.use_temporary = False if not filename.lower().endswith( tuple(re.findall("\\*(\\.[a-z]{1,10})", file_filter))): ext = re.search("\\*(\\.[a-z]{1,10})", filter) if ext: filename += ext.group(1) self.leText.setText(filename) settings.setValue('/Processing/LastOutputPath', os.path.dirname(filename)) if not last_ext_path is None: settings.setValue(last_ext_path, os.path.splitext(filename)[1].lower()) def selectEncoding(self): dialog = QgsEncodingSelectionDialog( self, self.tr('File encoding'), self.encoding) if dialog.exec_() == QDialog.Accepted: self.encoding = dialog.encoding() settings = QgsSettings() settings.setValue('/Processing/encoding', self.encoding) dialog.deleteLater() def selectDirectory(self): lastDir = self.leText.text() settings = QgsSettings() if not lastDir: lastDir = settings.value("/Processing/LastOutputPath", QDir.homePath()) dirName = QFileDialog.getExistingDirectory(self, self.tr('Select Directory'), lastDir, QFileDialog.ShowDirsOnly) if dirName: self.leText.setText(QDir.toNativeSeparators(dirName)) settings.setValue('/Processing/LastOutputPath', dirName) def setValue(self, value): if value == 'memory:': self.saveToTemporary() else: self.leText.setText(value) self.use_temporary = False def getValue(self): key = None if self.use_temporary and isinstance(self.parameter, QgsProcessingParameterFeatureSink): key = 'memory:' elif self.use_temporary: key = self.parameter.generateTemporaryDestination() else: key = self.leText.text() if not key and self.parameter.flags() & QgsProcessingParameterDefinition.FlagOptional: return None if isinstance(self.parameter, QgsProcessingParameterFolderDestination): return self.leText.text() if isinstance(self.parameter, QgsProcessingParameterFileDestination): return key value = QgsProcessingOutputLayerDefinition(key) value.createOptions = {'fileEncoding': self.encoding} return value