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e38849d750
Correctly generate commands when run on eg /vsis3/ layer sources, and translate credential options to "--config KEY VALUE" arguments for GDAL commands
102 lines
3.8 KiB
Python
102 lines
3.8 KiB
Python
"""
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***************************************************************************
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rgb2pct.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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import os
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from qgis.PyQt.QtGui import QIcon
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from qgis.core import (QgsRasterFileWriter,
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QgsProcessingException,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterNumber,
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QgsProcessingParameterRasterDestination)
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from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
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from processing.algs.gdal.GdalUtils import GdalUtils
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from processing.tools.system import isWindows
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pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
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class rgb2pct(GdalAlgorithm):
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INPUT = 'INPUT'
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OUTPUT = 'OUTPUT'
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NCOLORS = 'NCOLORS'
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def __init__(self):
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super().__init__()
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def initAlgorithm(self, config=None):
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self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT, self.tr('Input layer')))
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self.addParameter(QgsProcessingParameterNumber(self.NCOLORS,
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self.tr('Number of colors'),
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type=QgsProcessingParameterNumber.Type.Integer,
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minValue=0,
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maxValue=255,
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defaultValue=2))
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self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT, self.tr('RGB to PCT')))
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def name(self):
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return 'rgbtopct'
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def displayName(self):
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return self.tr('RGB to PCT')
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def group(self):
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return self.tr('Raster conversion')
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def groupId(self):
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return 'rasterconversion'
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def icon(self):
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return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', '24-to-8-bits.png'))
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def commandName(self):
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return 'rgb2pct'
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
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self.setOutputValue(self.OUTPUT, out)
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raster = self.parameterAsRasterLayer(parameters, self.INPUT, context)
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if raster is None:
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raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT))
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input_details = GdalUtils.gdal_connection_details_from_layer(
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raster)
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output_format = QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1])
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if not output_format:
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raise QgsProcessingException(self.tr('Output format is invalid'))
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arguments = [
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'-n',
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str(self.parameterAsInt(parameters, self.NCOLORS, context)),
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'-of',
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output_format,
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input_details.connection_string,
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out
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]
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if input_details.credential_options:
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arguments.extend(input_details.credential_options_as_arguments())
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return [self.commandName() + ('.bat' if isWindows() else '.py'), GdalUtils.escapeAndJoin(arguments)]
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