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| 1 | +# -*- coding: utf-8 -*- |
| 2 | + |
| 3 | +""" |
| 4 | +*************************************************************************** |
| 5 | + translate.py |
| 6 | + --------------------- |
| 7 | + Date : August 2018 |
| 8 | + Copyright : (C) 2018 by Mathieu Pellerin |
| 9 | + Email : nirvn dot asia at gmail dot com |
| 10 | +*************************************************************************** |
| 11 | +* * |
| 12 | +* This program is free software; you can redistribute it and/or modify * |
| 13 | +* it under the terms of the GNU General Public License as published by * |
| 14 | +* the Free Software Foundation; either version 2 of the License, or * |
| 15 | +* (at your option) any later version. * |
| 16 | +* * |
| 17 | +*************************************************************************** |
| 18 | +""" |
| 19 | + |
| 20 | +__author__ = 'Mathieu Pellerin' |
| 21 | +__date__ = 'August 2018' |
| 22 | +__copyright__ = '(C) 2018, Mathieu Pellerin' |
| 23 | + |
| 24 | +# This will get replaced with a git SHA1 when you do a git archive |
| 25 | + |
| 26 | +__revision__ = '$Format:%H$' |
| 27 | + |
| 28 | +import os |
| 29 | +import re |
| 30 | + |
| 31 | +from qgis.PyQt.QtGui import QIcon |
| 32 | + |
| 33 | +from qgis.core import (QgsRasterFileWriter, |
| 34 | + QgsProcessingException, |
| 35 | + QgsProcessingParameterEnum, |
| 36 | + QgsProcessingParameterDefinition, |
| 37 | + QgsProcessingParameterRasterLayer, |
| 38 | + QgsProcessingParameterBand, |
| 39 | + QgsProcessingParameterString, |
| 40 | + QgsProcessingParameterRasterDestination) |
| 41 | +from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm |
| 42 | +from processing.algs.gdal.GdalUtils import GdalUtils |
| 43 | + |
| 44 | +pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0] |
| 45 | + |
| 46 | + |
| 47 | +class rearrange_bands(GdalAlgorithm): |
| 48 | + |
| 49 | + INPUT = 'INPUT' |
| 50 | + BANDS = 'BANDS' |
| 51 | + OPTIONS = 'OPTIONS' |
| 52 | + DATA_TYPE = 'DATA_TYPE' |
| 53 | + OUTPUT = 'OUTPUT' |
| 54 | + |
| 55 | + TYPES = ['Byte', 'Int16', 'UInt16', 'UInt32', 'Int32', 'Float32', 'Float64', 'CInt16', 'CInt32', 'CFloat32', 'CFloat64'] |
| 56 | + |
| 57 | + def __init__(self): |
| 58 | + super().__init__() |
| 59 | + |
| 60 | + def initAlgorithm(self, config=None): |
| 61 | + self.addParameter(QgsProcessingParameterRasterLayer(self.INPUT, self.tr('Input layer'))) |
| 62 | + self.addParameter(QgsProcessingParameterBand(self.BANDS, |
| 63 | + self.tr('Selected band(s)'), |
| 64 | + None, |
| 65 | + self.INPUT, |
| 66 | + allowMultiple=True)) |
| 67 | + |
| 68 | + options_param = QgsProcessingParameterString(self.OPTIONS, |
| 69 | + self.tr('Additional creation options'), |
| 70 | + defaultValue='', |
| 71 | + optional=True) |
| 72 | + options_param.setFlags(options_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced) |
| 73 | + options_param.setMetadata({ |
| 74 | + 'widget_wrapper': { |
| 75 | + 'class': 'processing.algs.gdal.ui.RasterOptionsWidget.RasterOptionsWidgetWrapper'}}) |
| 76 | + self.addParameter(options_param) |
| 77 | + |
| 78 | + dataType_param = QgsProcessingParameterEnum(self.DATA_TYPE, |
| 79 | + self.tr('Output data type'), |
| 80 | + self.TYPES, |
| 81 | + allowMultiple=False, |
| 82 | + defaultValue=5) |
| 83 | + dataType_param.setFlags(dataType_param.flags() | QgsProcessingParameterDefinition.FlagAdvanced) |
| 84 | + self.addParameter(dataType_param) |
| 85 | + |
| 86 | + self.addParameter(QgsProcessingParameterRasterDestination(self.OUTPUT, |
| 87 | + self.tr('Converted'))) |
| 88 | + |
| 89 | + def name(self): |
| 90 | + return 'rearrange_bands' |
| 91 | + |
| 92 | + def displayName(self): |
| 93 | + return self.tr('Rearrange bands') |
| 94 | + |
| 95 | + def group(self): |
| 96 | + return self.tr('Raster conversion') |
| 97 | + |
| 98 | + def groupId(self): |
| 99 | + return 'rasterconversion' |
| 100 | + |
| 101 | + def icon(self): |
| 102 | + return QIcon(os.path.join(pluginPath, 'images', 'gdaltools', 'translate.png')) |
| 103 | + |
| 104 | + def shortHelpString(self): |
| 105 | + return self.tr("This algorithm creates a new raster using selected band(s) from a given raster layer.\n\n" |
| 106 | + "The reordering of bands is possible by dragging individual band names in the multiple selection dialog.") |
| 107 | + |
| 108 | + def commandName(self): |
| 109 | + return 'gdal_translate' |
| 110 | + |
| 111 | + def getConsoleCommands(self, parameters, context, feedback, executing=True): |
| 112 | + inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context) |
| 113 | + if inLayer is None: |
| 114 | + raise QgsProcessingException(self.invalidRasterError(parameters, self.INPUT)) |
| 115 | + |
| 116 | + out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context) |
| 117 | + |
| 118 | + arguments = [] |
| 119 | + |
| 120 | + bands = self.parameterAsFields(parameters, self.BANDS, context) |
| 121 | + for band in bands: |
| 122 | + match = re.search('(?:\A|[^0-9])([0-9]+)(?:\Z|[^0-9]|)', band) |
| 123 | + if match: |
| 124 | + band_nb = match.group(1) |
| 125 | + arguments.append('-b {}'.format(band_nb)) |
| 126 | + |
| 127 | + arguments.append('-ot') |
| 128 | + arguments.append(self.TYPES[self.parameterAsEnum(parameters, self.DATA_TYPE, context)]) |
| 129 | + |
| 130 | + arguments.append('-of') |
| 131 | + arguments.append(QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1])) |
| 132 | + |
| 133 | + options = self.parameterAsString(parameters, self.OPTIONS, context) |
| 134 | + if options: |
| 135 | + arguments.extend(GdalUtils.parseCreationOptions(options)) |
| 136 | + |
| 137 | + arguments.append(inLayer.source()) |
| 138 | + arguments.append(out) |
| 139 | + |
| 140 | + return [self.commandName(), GdalUtils.escapeAndJoin(arguments)] |
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