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b1cadb1822
have specific icons, instead of generic qgis icon We consider these 'top level' algorithms, and using the standard algorithm icon should help reflect this and differentiate them from 3rd party algorithms.
77 lines
2.9 KiB
Python
77 lines
2.9 KiB
Python
# -*- coding: utf-8 -*-
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"""
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***************************************************************************
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SaveSelectedFeatures.py
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---------------------
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Date : August 2012
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Copyright : (C) 2012 by Victor Olaya
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Email : volayaf at gmail dot com
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************
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"""
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__author__ = 'Victor Olaya'
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__date__ = 'August 2012'
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__copyright__ = '(C) 2012, Victor Olaya'
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# This will get replaced with a git SHA1 when you do a git archive
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__revision__ = '$Format:%H$'
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from qgis.core import (QgsApplication,
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QgsFeatureSink,
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QgsProcessingUtils)
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from processing.algs.qgis.QgisAlgorithm import QgisAlgorithm
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from processing.core.GeoAlgorithmExecutionException import GeoAlgorithmExecutionException
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from processing.core.parameters import ParameterVector
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from processing.core.outputs import OutputVector
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class SaveSelectedFeatures(QgisAlgorithm):
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OUTPUT_LAYER = 'OUTPUT_LAYER'
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INPUT_LAYER = 'INPUT_LAYER'
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def group(self):
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return self.tr('Vector general tools')
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def __init__(self):
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super().__init__()
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self.addParameter(ParameterVector(self.INPUT_LAYER,
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self.tr('Input layer')))
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self.addOutput(OutputVector(self.OUTPUT_LAYER,
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self.tr('Selection')))
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def name(self):
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return 'saveselectedfeatures'
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def displayName(self):
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return self.tr('Save selected features')
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def processAlgorithm(self, parameters, context, feedback):
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inputFilename = self.getParameterValue(self.INPUT_LAYER)
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output = self.getOutputFromName(self.OUTPUT_LAYER)
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vectorLayer = QgsProcessingUtils.mapLayerFromString(inputFilename, context)
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writer = output.getVectorWriter(vectorLayer.fields(), vectorLayer.wkbType(), vectorLayer.crs(), context)
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features = vectorLayer.getSelectedFeatures()
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count = int(vectorLayer.selectedFeatureCount())
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if count == 0:
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raise GeoAlgorithmExecutionException(self.tr('There are no selected features in the input layer.'))
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total = 100.0 / count if count else 1
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for current, feat in enumerate(features):
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writer.addFeature(feat, QgsFeatureSink.FastInsert)
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feedback.setProgress(int(current * total))
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del writer
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