mirror of
https://github.com/qgis/QGIS.git
synced 2025-02-28 00:17:30 -05:00
94 lines
3.7 KiB
Python
94 lines
3.7 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
***************************************************************************
|
|
AddTableField.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'
|
|
|
|
# This will get replaced with a git SHA1 when you do a git archive
|
|
|
|
__revision__ = '$Format:%H$'
|
|
|
|
from qgis.PyQt.QtCore import QVariant
|
|
from qgis.core import (QgsField,
|
|
QgsProcessingParameterString,
|
|
QgsProcessingParameterNumber,
|
|
QgsProcessingParameterEnum)
|
|
from processing.algs.qgis.QgisAlgorithm import QgisFeatureBasedAlgorithm
|
|
|
|
|
|
class AddTableField(QgisFeatureBasedAlgorithm):
|
|
|
|
FIELD_NAME = 'FIELD_NAME'
|
|
FIELD_TYPE = 'FIELD_TYPE'
|
|
FIELD_LENGTH = 'FIELD_LENGTH'
|
|
FIELD_PRECISION = 'FIELD_PRECISION'
|
|
|
|
TYPES = [QVariant.Int, QVariant.Double, QVariant.String]
|
|
|
|
def group(self):
|
|
return self.tr('Vector table')
|
|
|
|
def __init__(self):
|
|
super().__init__()
|
|
self.type_names = [self.tr('Integer'),
|
|
self.tr('Float'),
|
|
self.tr('String')]
|
|
self.field = None
|
|
|
|
def initParameters(self, config=None):
|
|
self.addParameter(QgsProcessingParameterString(self.FIELD_NAME,
|
|
self.tr('Field name')))
|
|
self.addParameter(QgsProcessingParameterEnum(self.FIELD_TYPE,
|
|
self.tr('Field type'), self.type_names))
|
|
self.addParameter(QgsProcessingParameterNumber(self.FIELD_LENGTH,
|
|
self.tr('Field length'), QgsProcessingParameterNumber.Integer,
|
|
10, False, 1, 255))
|
|
self.addParameter(QgsProcessingParameterNumber(self.FIELD_PRECISION,
|
|
self.tr('Field precision'), QgsProcessingParameterNumber.Integer, 0, False, 0, 10))
|
|
|
|
def name(self):
|
|
return 'addfieldtoattributestable'
|
|
|
|
def displayName(self):
|
|
return self.tr('Add field to attributes table')
|
|
|
|
def outputName(self):
|
|
return self.tr('Added')
|
|
|
|
def prepareAlgorithm(self, parameters, context, feedback):
|
|
field_type = self.parameterAsEnum(parameters, self.FIELD_TYPE, context)
|
|
field_name = self.parameterAsString(parameters, self.FIELD_NAME, context)
|
|
field_length = self.parameterAsInt(parameters, self.FIELD_LENGTH, context)
|
|
field_precision = self.parameterAsInt(parameters, self.FIELD_PRECISION, context)
|
|
|
|
self.field = QgsField(field_name, self.TYPES[field_type], '',
|
|
field_length, field_precision)
|
|
return True
|
|
|
|
def outputFields(self, inputFields):
|
|
inputFields.append(self.field)
|
|
return inputFields
|
|
|
|
def processFeature(self, feature, feedback):
|
|
attributes = feature.attributes()
|
|
attributes.append(None)
|
|
feature.setAttributes(attributes)
|
|
return feature
|