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utils.py
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utils.py
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# -*- coding: utf-8 -*-
from __future__ import print_function
from builtins import range
from builtins import object
import os
import pickle
from qgis.PyQt.QtCore import QVariant, QSettings
from qgis.core import (QgsProject, QgsVectorLayer, QgsField, QgsFeature, QgsGeometry, QgsRectangle, QgsFeatureRequest, QgsExpression, QgsCoordinateTransform)
#from qgis.utils import iface
class Utils(object):
def __init__(self, iface):
super(Utils, self).__init__()
self.iface = iface
self.canvas = self.iface.mapCanvas()
self.file = os.path.join(os.path.dirname(__file__), 'settings.db')
self.cfg = self.get_config()
def get_config(self):
file = open(self.file, 'rb')
cfg = pickle.load(file)
file.close()
return cfg
def set_config(self, config):
file = open(self.file, 'wb')
pickle.dump(config, file, 2)
file.close()
def getPartidos(self):
return self.cfg.get('partidos', [])
def initPdos(self, combobox, partidos):
if partidos:
for i in range(0, len(partidos)):
combobox.addItem(partidos[i][0], partidos[i][1])
else:
self.iface.messageBar().pushWarning('Advertencia', 'No se encontraron registros')
def createFields(self, layer):
fields = [
QgsField('id', QVariant.String),
QgsField('partido', QVariant.Int),
QgsField('partida', QVariant.Int),
QgsField('nomenclatura', QVariant.String),
QgsField('codigo', QVariant.String),
QgsField('layer', QVariant.String)
]
layer.dataProvider().addAttributes(fields)
layer.updateFields()
def addLayerToMap(self, radiobuttonDefaultLayer, defaultLayer, baseName, path, provider, checkeboxDefaultStyle, qml):
QgsProject.instance().layersAdded.connect( self.changeLayerAdditionMode )
if radiobuttonDefaultLayer.isChecked():
try:
if QgsProject.instance().mapLayer(defaultLayer.id()) == None:
QgsProject.instance().addMapLayer(defaultLayer)
except:
defaultLayer = QgsVectorLayer(path, baseName, provider)
defaultLayer.loadNamedStyle(os.path.join(os.path.dirname(__file__), qml))
self.createFields(defaultLayer)
QgsProject.instance().addMapLayer(defaultLayer)
QgsProject.instance().layersAdded.disconnect( self.changeLayerAdditionMode )
return {"layer":defaultLayer, "lyrDefault": True}
else:
layer = self.iface.addVectorLayer(path, baseName, provider)
#layer.featureAdded.connect(lambda: self.featureAdded(layer))
if checkeboxDefaultStyle.isChecked():
layer.loadNamedStyle(os.path.join(os.path.dirname(__file__), qml))
self.createFields(layer)
QgsProject.instance().layersAdded.disconnect( self.changeLayerAdditionMode )
return {"layer":layer, "lyrDefault": False}
def addResultToLayer(self, layer, result, lyrDefault, mode):
if len(result) > 0:
layer.startEditing()
feats = []
if lyrDefault is True:
bbox = QgsRectangle()
bbox.setMinimal()
for res in result:
feat = QgsFeature()
if mode == 'web':
feat.setGeometry(QgsGeometry.fromMultiPolygonXY(res["geom"]))
else:
feat.setGeometry(QgsGeometry.fromWkt(res["wkt"]))
feat.setAttributes([res["id"], res["partido"], res["partida"], res["nomenclatura"], res["codigo"], res["layer"]])
feats.append(feat)
if lyrDefault is True:
bbox.combineExtentWith(feat.geometry().boundingBox())
layer.dataProvider().addFeatures(feats)
layer.commitChanges()
layer.updateExtents()
if lyrDefault is True:
self.canvas.setExtent(self.setBboxMap(bbox, layer))
else:
self.canvas.setExtent(self.setBboxMap(layer.extent(), layer))
def removeLayer(self, baseName, pdo, pda=None, cir=None, sec=None, chn=None, chl=None, qtn=None, qtl=None, frn=None, frl=None, mzn=None, mzl=None, pcn=None, pcl=None):
layers = QgsProject.instance().mapLayersByName(baseName)
for lyr in layers:
QgsProject.instance().removeMapLayer(lyr.id())
pdo.setCurrentIndex(0)
if pda != None:
pda.setText("")
if cir != None:
cir.setText("")
if sec != None:
sec.setText("")
if chn != None:
chn.setText("")
if chl != None:
chl.setText("")
if qtn != None:
qtn.setText("")
if qtl != None:
qtl.setText("")
if frn != None:
frn.setText("")
if frl != None:
frl.setText("")
if mzn != None:
mzn.setText("")
if mzl != None:
mzl.setText("")
if pcn != None:
pcn.setText("")
if pcl != None:
pcl.setText("")
def getFeatureByAttributtes(self, layer, pdo_or_omencla, pda=None):
try:
if pda != None:
result = layer.getFeatures(QgsFeatureRequest(QgsExpression('"partido" = {} and "partida" = {}'.format(pdo_or_omencla, pda))))
result = list(result)
if len(result) == 0:
return False
else:
result = layer.getFeatures(QgsFeatureRequest(QgsExpression('"codigo" = \'{}\''.format(pdo_or_omencla))))
result = list(result)
if len(result) == 0:
return False
bbox = QgsRectangle()
bbox.setMinimal()
for feat in result:
bbox.combineExtentWith(feat.geometry().boundingBox())
layer.updateExtents()
self.canvas.setExtent(self.setBboxMap(bbox, layer))
layer.triggerRepaint()
#canvas.refresh()
return True
except Exception as e: #en caso que la capa haya sido eliminada
# fix_print_with_import
print(str(e))
return False
def changeLayerAdditionMode(self, layers):
QgsProject.instance().layerTreeRegistryBridge().setLayerInsertionPoint( QgsProject.instance().layerTreeRoot(), 0 )
def setBboxMap(self, bbox, layer):
crs_layer = layer.crs()
crs_canvas = self.canvas.mapSettings().destinationCrs()
if crs_canvas.authid() != crs_layer.authid():
try:
xform = QgsCoordinateTransform(crs_layer, crs_canvas, QgsProject.instance())
bbox = xform.transform(bbox)
except Exception as e:
print(str(e))
return bbox
def format_nomenclatura(self, nomencla):
n = len(nomencla)
res = ''
bol_mac = False
bol_pc = False
if n > 3:
cir = int(nomencla[3:5])
if cir > 0:
bol_mac = True
res += 'Cir. ' + self.arabigo_to_romano(cir) + ' - '
if n > 5:
sec = nomencla[5:7].lstrip('0')
if sec != '':
bol_mac = True
res += 'Sec. ' + sec + ' - '
if n > 12:
cha = int(nomencla[7:11])
chal = nomencla[11:14].lstrip('0')
if cha > 0:
bol_mac = True
res += 'Ch. ' + str(cha) + chal + ' - '
if n > 19:
qta = int(nomencla[14:18])
qtal = nomencla[18:21].lstrip('0')
if qta > 0:
bol_mac = True
res += 'Qt. ' + str(qta) + qtal + ' - '
if n > 26:
fra = int(nomencla[21:25])
fral = nomencla[25:28].lstrip('0')
if fra > 0:
bol_mac = True
res += 'Fr. ' + str(fra) + fral + ' - '
if n > 33:
maz = int(nomencla[28:32])
mazl = nomencla[32:35].lstrip('0')
if maz > 0:
bol_mac = True
res += 'Mz. ' + str(maz) + mazl + ' - '
if n > 40:
pac = int(nomencla[35:39])
pacl = nomencla[39:42].lstrip('0')
if pac > 0:
bol_pc = True
res += 'Pc. ' + str(pac) + pacl
if bol_mac is True and bol_pc is False:
res = res[:-3]
return res
def arabigo_to_romano(self, num):
romanos = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I']
arabigos = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]
roman = ''
if num <= 4000:
for (i, romano) in enumerate(romanos):
while num >= arabigos[i]:
roman += romano
num -= arabigos[i]
return roman