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# -*- coding: utf-8 -*-
"""
***************************************************************************
doExtractProj.py
---------------------
Date : August 2011
Copyright : (C) 2011 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__ = 'August 2011'
__copyright__ = '(C) 2011, Alexander Bruy'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from qgis.PyQt.QtCore import Qt, QCoreApplication, QThread, QMutex, pyqtSignal
from qgis.PyQt.QtWidgets import QDialog, QDialogButtonBox, QApplication, QMessageBox
from qgis.PyQt.QtGui import QCursor
from .ui_dialogExtractProjection import Ui_GdalToolsDialog as Ui_Dialog
from . import GdalTools_utils as Utils
import os.path
req_mods = {"osgeo": "osgeo [python-gdal]"}
try:
from osgeo import gdal
from osgeo import osr
except ImportError as e:
error_str = e.args[0]
error_mod = error_str.replace("No module named ", "")
if error_mod in req_mods:
error_str = error_str.replace(error_mod, req_mods[error_mod])
raise ImportError(error_str)
class GdalToolsDialog(QDialog, Ui_Dialog):
def __init__(self, iface):
QDialog.__init__(self, iface.mainWindow())
self.setupUi(self)
self.iface = iface
self.inSelector.setType(self.inSelector.FILE)
self.recurseCheck.hide()
self.okButton = self.buttonBox.button(QDialogButtonBox.Ok)
self.cancelButton = self.buttonBox.button(QDialogButtonBox.Cancel)
self.inSelector.selectClicked.connect(self.fillInputFileEdit)
self.batchCheck.stateChanged.connect(self.switchToolMode)
def switchToolMode(self):
self.recurseCheck.setVisible(self.batchCheck.isChecked())
self.inSelector.clear()
if self.batchCheck.isChecked():
self.inFileLabel = self.label.text()
self.label.setText(QCoreApplication.translate("GdalTools", "&Input directory"))
self.inSelector.selectClicked.disconnect(self.fillInputFileEdit)
self.inSelector.selectClicked.connect(self.fillInputDir)
else:
self.label.setText(self.inFileLabel)
self.inSelector.selectClicked.connect(self.fillInputFileEdit)
self.inSelector.selectClicked.disconnect(self.fillInputDir)
def fillInputFileEdit(self):
lastUsedFilter = Utils.FileFilter.lastUsedRasterFilter()
inputFile = Utils.FileDialog.getOpenFileName(self, self.tr("Select the file to analyse"), Utils.FileFilter.allRastersFilter(), lastUsedFilter)
if not inputFile:
return
Utils.FileFilter.setLastUsedRasterFilter(lastUsedFilter)
self.inSelector.setFilename(inputFile)
def fillInputDir(self):
inputDir = Utils.FileDialog.getExistingDirectory(self, self.tr("Select the input directory with files to Assign projection"))
if not inputDir:
return
self.inSelector.setFilename(inputDir)
def reject(self):
QDialog.reject(self)
def accept(self):
self.inFiles = None
if self.batchCheck.isChecked():
self.inFiles = Utils.getRasterFiles(self.inSelector.filename(), self.recurseCheck.isChecked())
else:
self.inFiles = [self.inSelector.filename()]
self.progressBar.setRange(0, len(self.inFiles))
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
self.okButton.setEnabled(False)
self.extractor = ExtractThread(self.inFiles, self.prjCheck.isChecked())
self.extractor.fileProcessed.connect(self.updateProgress)
self.extractor.processFinished.connect(self.processingFinished)
self.extractor.processInterrupted.connect(self.processingInterrupted)
self.buttonBox.rejected.disconnect(self.reject)
self.buttonBox.rejected.connect(self.stopProcessing)
self.extractor.start()
def updateProgress(self):
self.progressBar.setValue(self.progressBar.value() + 1)
def processingFinished(self):
self.stopProcessing()
QMessageBox.information(self, self.tr("Finished"), self.tr("Processing completed."))
def processingInterrupted(self):
self.restoreGui()
def stopProcessing(self):
if self.extractor is not None:
self.extractor.stop()
self.extractor = None
self.restoreGui()
def restoreGui(self):
self.progressBar.setRange(0, 100)
self.progressBar.setValue(0)
QApplication.restoreOverrideCursor()
self.buttonBox.rejected.disconnect(self.stopProcessing)
self.buttonBox.rejected.connect(self.reject)
self.okButton.setEnabled(True)
# ----------------------------------------------------------------------
def extractProjection(filename, createPrj):
raster = gdal.Open(unicode(filename))
crs = raster.GetProjection()
geotransform = raster.GetGeoTransform()
raster = None
outFileName = os.path.splitext(unicode(filename))[0]
# create prj file requested and if projection available
if crs != "" and createPrj:
# convert CRS into ESRI format
tmp = osr.SpatialReference()
tmp.ImportFromWkt(crs)
tmp.MorphToESRI()
crs = tmp.ExportToWkt()
tmp = None
prj = open(outFileName + '.prj', 'wt')
prj.write(crs)
prj.close()
# create wld file
wld = open(outFileName + '.wld', 'wt')
wld.write("%0.8f\n" % geotransform[1])
wld.write("%0.8f\n" % geotransform[4])
wld.write("%0.8f\n" % geotransform[2])
wld.write("%0.8f\n" % geotransform[5])
wld.write("%0.8f\n" % (geotransform[0] + 0.5 * geotransform[1] + 0.5 * geotransform[2]))
wld.write("%0.8f\n" % (geotransform[3] + 0.5 * geotransform[4] + 0.5 * geotransform[5]))
wld.close()
class ExtractThread(QThread):
fileProcessed = pyqtSignal()
processFinished = pyqtSignal()
processInterrupted = pyqtSignal()
def __init__(self, files, needPrj):
QThread.__init__(self, QThread.currentThread())
self.inFiles = files
self.needPrj = needPrj
self.mutex = QMutex()
self.stopMe = 0
def run(self):
self.mutex.lock()
self.stopMe = 0
self.mutex.unlock()
interrupted = False
for f in self.inFiles:
extractProjection(f, self.needPrj)
self.fileProcessed.emit()
self.mutex.lock()
s = self.stopMe
self.mutex.unlock()
if s == 1:
interrupted = True
break
if not interrupted:
self.processFinished.emit()
else:
self.processInterrupted.emit()
def stop(self):
self.mutex.lock()
self.stopMe = 1
self.mutex.unlock()
QThread.wait(self)
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