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# -*- coding: utf-8 -*-
#-----------------------------------------------------------
#
# fTools
# Copyright (C) 2008-2011 Carson Farmer
# EMAIL: carson.farmer (at) gmail.com
# WEB : http://www.ftools.ca/fTools.html
#
# A collection of data management and analysis tools for vector data
#
#-----------------------------------------------------------
#
# licensed under the terms of GNU GPL 2
#
# 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.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
#---------------------------------------------------------------------
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import ftools_utils
from qgis.core import *
from ui_frmPointsInPolygon import Ui_Dialog
class Dialog(QDialog, Ui_Dialog):
def __init__(self, iface):
QDialog.__init__(self, iface.mainWindow())
self.iface = iface
# Set up the user interface from Designer.
self.setupUi(self)
self.buttonOk = self.buttonBox.button( QDialogButtonBox.Ok )
# populate layer list
self.progressBar.setValue(0)
mapCanvas = self.iface.mapCanvas()
layers = ftools_utils.getLayerNames([QGis.Point, QGis.Line, QGis.Polygon])
self.inPolygon.addItems(layers)
self.inPoint.addItems(layers)
self.updateUI()
self.connect(self.inPoint, SIGNAL("currentIndexChanged(QString)"), self.updateCheck)
self.cmbModify.addItems([self.tr("creating new selection"), self.tr("adding to current selection"), self.tr("removing from current selection")])
def updateCheck(self, text):
vlayer = ftools_utils.getVectorLayerByName(text)
if vlayer.selectedFeatureCount() > 0:
self.chkSelected.setChecked(True)
else:
self.chkSelected.setChecked(False)
def updateUI(self):
self.label_5.setVisible(False)
self.lnField.setVisible(False)
self.outShape.setVisible(False)
self.toolOut.setVisible(False)
self.label_2.setVisible(False)
self.setWindowTitle(self.tr("Select by location"))
self.label_3.setText(self.tr("Select features in:"))
self.label_4.setText(self.tr("that intersect features in:"))
self.label_mod = QLabel(self)
self.label_mod.setObjectName("label_mod")
self.label_mod.setText(self.tr("Modify current selection by:"))
self.cmbModify = QComboBox(self)
self.cmbModify.setObjectName("cmbModify")
self.chkSelected = QCheckBox(self.tr("Use selected features only"), self)
self.chkSelected.setObjectName("chkSelected")
self.gridLayout.addWidget(self.chkSelected,2,0,1,1)
self.gridLayout.addWidget(self.label_mod,3,0,1,1)
self.gridLayout.addWidget(self.cmbModify,4,0,1,1)
self.resize(381, 100)
def accept(self):
self.buttonOk.setEnabled( False )
if self.inPolygon.currentText() == "":
QMessageBox.information(self, self.tr("Select by location"), self.tr( "Please specify input layer"))
elif self.inPoint.currentText() == "":
QMessageBox.information(self, self.tr("Select by location"), self.tr("Please specify select layer"))
else:
inPoly = self.inPolygon.currentText()
inPts = self.inPoint.currentText()
self.compute(inPoly, inPts, self.cmbModify.currentText(), self.chkSelected.isChecked())
self.progressBar.setValue(0)
self.buttonOk.setEnabled( True )
def compute(self, inPoly, inPts, modify, selection):
inputLayer = ftools_utils.getVectorLayerByName(inPoly)
selectLayer = ftools_utils.getVectorLayerByName(inPts)
inputProvider = inputLayer.dataProvider()
selectProvider = selectLayer.dataProvider()
feat = QgsFeature()
infeat = QgsFeature()
geom = QgsGeometry()
selectedSet = []
index = ftools_utils.createIndex(inputProvider)
if selection:
features = selectLayer.selectedFeatures()
self.progressBar.setMaximum(len(features))
for feat in features:
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for id in intersects:
inputProvider.getFeatures( QgsFeatureRequest().setFilterFid( int(id) ) ).nextFeature( infeat )
tmpGeom = QgsGeometry(infeat.geometry())
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
self.progressBar.setValue(self.progressBar.value()+1)
else:
self.progressBar.setMaximum(selectProvider.featureCount())
selectFit = selectProvider.getFeatures()
while selectFit.nextFeature(feat):
geom = QgsGeometry(feat.geometry())
intersects = index.intersects(geom.boundingBox())
for id in intersects:
inputProvider.getFeatures( QgsFeatureRequest().setFilterFid( int(id) ) ).nextFeature( infeat )
tmpGeom = QgsGeometry( infeat.geometry() )
if geom.intersects(tmpGeom):
selectedSet.append(infeat.id())
self.progressBar.setValue(self.progressBar.value()+1)
if modify == self.tr("adding to current selection"):
selectedSet = list(set(inputLayer.selectedFeaturesIds()).union(selectedSet))
elif modify == self.tr("removing from current selection"):
selectedSet = list(set(inputLayer.selectedFeaturesIds()).difference(selectedSet))
inputLayer.setSelectedFeatures(selectedSet)
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