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150 lines
4.6 KiB
Python
150 lines
4.6 KiB
Python
"""
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***************************************************************************
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self.py
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---------------------
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Date : January 2016
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Copyright : (C) 2016 by Alexander Bruy
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Email : alexander dot bruy 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__ = "Alexander Bruy"
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__date__ = "January 2016"
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__copyright__ = "(C) 2016, Alexander Bruy"
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import os
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from qgis.PyQt.QtGui import QIcon
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from qgis.core import (
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QgsProcessingException,
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QgsProcessingParameterRasterLayer,
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QgsProcessingParameterCrs,
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QgsProcessingOutputRasterLayer,
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QgsProcessingContext,
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)
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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 AssignProjection(GdalAlgorithm):
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INPUT = "INPUT"
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CRS = "CRS"
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OUTPUT = "OUTPUT"
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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(
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QgsProcessingParameterRasterLayer(self.INPUT, self.tr("Input layer"))
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)
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self.addParameter(QgsProcessingParameterCrs(self.CRS, self.tr("Desired CRS")))
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self.addOutput(
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QgsProcessingOutputRasterLayer(
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self.OUTPUT, self.tr("Layer with projection")
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)
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)
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def name(self):
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return "assignprojection"
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def displayName(self):
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return self.tr("Assign projection")
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def icon(self):
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return QIcon(
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os.path.join(pluginPath, "images", "gdaltools", "projection-add.png")
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)
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def tags(self):
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tags = self.tr("assign,set,transform,reproject,crs,srs").split(",")
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tags.extend(super().tags())
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return tags
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def group(self):
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return self.tr("Raster projections")
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def groupId(self):
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return "rasterprojections"
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def commandName(self):
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return "gdal_edit"
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def getConsoleCommands(self, parameters, context, feedback, executing=True):
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inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
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if inLayer is None:
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raise QgsProcessingException(
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self.invalidRasterError(parameters, self.INPUT)
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)
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input_details = GdalUtils.gdal_connection_details_from_layer(inLayer)
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fileName = inLayer.source()
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crs = self.parameterAsCrs(parameters, self.CRS, context)
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arguments = [
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"-a_srs",
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GdalUtils.gdal_crs_string(crs),
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input_details.connection_string,
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]
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if input_details.open_options:
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arguments.extend(input_details.open_options_as_arguments())
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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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self.setOutputValue(self.OUTPUT, fileName)
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return [
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self.commandName() + (".bat" if isWindows() else ".py"),
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GdalUtils.escapeAndJoin(arguments),
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]
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def postProcessAlgorithm(self, context, feedback):
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# get output value
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fileName = self.output_values.get(self.OUTPUT)
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if not fileName:
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return {}
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# search in context project's layers
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if context.project():
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for l in context.project().mapLayers().values():
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# check the source
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if l.source() != fileName:
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continue
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# reload provider's data
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l.dataProvider().reloadData()
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l.setCrs(l.dataProvider().crs())
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l.triggerRepaint()
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# search in context temporary layer store
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for l in context.temporaryLayerStore().mapLayers().values():
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# check the source
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if l.source() != fileName:
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continue
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# reload provider's data
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l.dataProvider().reloadData()
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l.setCrs(l.dataProvider().crs())
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context.temporaryLayerStore().addMapLayer(l)
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return {}
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