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"""
***************************************************************************
self.py
---------------------
Date : January 2016
Copyright : (C) 2016 by Alexander Bruy
Email : alexander dot bruy 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__ = "Alexander Bruy"
__date__ = "January 2016"
__copyright__ = "(C) 2016, Alexander Bruy"
import os
from qgis.PyQt.QtGui import QIcon
from qgis.core import (
QgsProcessingException,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterCrs,
QgsProcessingOutputRasterLayer,
QgsProcessingContext,
)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.algs.gdal.GdalUtils import GdalUtils
from processing.tools.system import isWindows
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
class AssignProjection(GdalAlgorithm):
INPUT = "INPUT"
CRS = "CRS"
OUTPUT = "OUTPUT"
def __init__(self):
super().__init__()
def initAlgorithm(self, config=None):
self.addParameter(
QgsProcessingParameterRasterLayer(self.INPUT, self.tr("Input layer"))
)
self.addParameter(QgsProcessingParameterCrs(self.CRS, self.tr("Desired CRS")))
self.addOutput(
QgsProcessingOutputRasterLayer(
self.OUTPUT, self.tr("Layer with projection")
)
)
def name(self):
return "assignprojection"
def displayName(self):
return self.tr("Assign projection")
def icon(self):
return QIcon(
os.path.join(pluginPath, "images", "gdaltools", "projection-add.png")
)
def tags(self):
tags = self.tr("assign,set,transform,reproject,crs,srs").split(",")
tags.extend(super().tags())
return tags
def group(self):
return self.tr("Raster projections")
def groupId(self):
return "rasterprojections"
def commandName(self):
return "gdal_edit"
def getConsoleCommands(self, parameters, context, feedback, executing=True):
inLayer = self.parameterAsRasterLayer(parameters, self.INPUT, context)
if inLayer is None:
raise QgsProcessingException(
self.invalidRasterError(parameters, self.INPUT)
)
input_details = GdalUtils.gdal_connection_details_from_layer(inLayer)
fileName = inLayer.source()
crs = self.parameterAsCrs(parameters, self.CRS, context)
arguments = [
"-a_srs",
GdalUtils.gdal_crs_string(crs),
input_details.connection_string,
]
if input_details.open_options:
arguments.extend(input_details.open_options_as_arguments())
if input_details.credential_options:
arguments.extend(input_details.credential_options_as_arguments())
self.setOutputValue(self.OUTPUT, fileName)
return [
self.commandName() + (".bat" if isWindows() else ".py"),
GdalUtils.escapeAndJoin(arguments),
]
def postProcessAlgorithm(self, context, feedback):
# get output value
fileName = self.output_values.get(self.OUTPUT)
if not fileName:
return {}
# search in context project's layers
if context.project():
for l in context.project().mapLayers().values():
# check the source
if l.source() != fileName:
continue
# reload provider's data
l.dataProvider().reloadData()
l.setCrs(l.dataProvider().crs())
l.triggerRepaint()
# search in context temporary layer store
for l in context.temporaryLayerStore().mapLayers().values():
# check the source
if l.source() != fileName:
continue
# reload provider's data
l.dataProvider().reloadData()
l.setCrs(l.dataProvider().crs())
context.temporaryLayerStore().addMapLayer(l)
return {}
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