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"""
***************************************************************************
pct2rgb.py
---------------------
Date : August 2012
Copyright : (C) 2012 by Victor Olaya
Email : volayaf 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__ = "Victor Olaya"
__date__ = "August 2012"
__copyright__ = "(C) 2012, Victor Olaya"
import os
from qgis.PyQt.QtGui import QIcon
from qgis.core import (
QgsRasterFileWriter,
QgsProcessingException,
QgsProcessingParameterRasterLayer,
QgsProcessingParameterBand,
QgsProcessingParameterBoolean,
QgsProcessingParameterRasterDestination,
)
from processing.algs.gdal.GdalAlgorithm import GdalAlgorithm
from processing.tools.system import isWindows
from processing.algs.gdal.GdalUtils import GdalUtils
pluginPath = os.path.split(os.path.split(os.path.dirname(__file__))[0])[0]
class pct2rgb(GdalAlgorithm):
INPUT = "INPUT"
BAND = "BAND"
RGBA = "RGBA"
OUTPUT = "OUTPUT"
def __init__(self):
super().__init__()
def initAlgorithm(self, config=None):
self.addParameter(
QgsProcessingParameterRasterLayer(self.INPUT, self.tr("Input layer"))
)
self.addParameter(
QgsProcessingParameterBand(
self.BAND,
self.tr("Band number"),
1,
parentLayerParameterName=self.INPUT,
)
)
self.addParameter(
QgsProcessingParameterBoolean(
self.RGBA, self.tr("Generate a RGBA file"), defaultValue=False
)
)
self.addParameter(
QgsProcessingParameterRasterDestination(self.OUTPUT, self.tr("PCT to RGB"))
)
def name(self):
return "pcttorgb"
def displayName(self):
return self.tr("PCT to RGB")
def group(self):
return self.tr("Raster conversion")
def groupId(self):
return "rasterconversion"
def icon(self):
return QIcon(
os.path.join(pluginPath, "images", "gdaltools", "8-to-24-bits.png")
)
def commandName(self):
return "pct2rgb"
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)
out = self.parameterAsOutputLayer(parameters, self.OUTPUT, context)
self.setOutputValue(self.OUTPUT, out)
output_format = QgsRasterFileWriter.driverForExtension(os.path.splitext(out)[1])
if not output_format:
raise QgsProcessingException(self.tr("Output format is invalid"))
arguments = [
input_details.connection_string,
out,
"-of",
output_format,
"-b",
str(self.parameterAsInt(parameters, self.BAND, context)),
]
if self.parameterAsBoolean(parameters, self.RGBA, context):
arguments.append("-rgba")
if input_details.credential_options:
arguments.extend(input_details.credential_options_as_arguments())
return [
self.commandName() + (".bat" if isWindows() else ".py"),
GdalUtils.escapeAndJoin(arguments),
]
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