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# -*- coding: utf-8 -*-
"""
***************************************************************************
dialogBase.py
---------------------
Date : June 2010
Copyright : (C) 2010 by Giuseppe Sucameli
Email : brush dot tyler 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__ = 'Giuseppe Sucameli'
__date__ = 'June 2010'
__copyright__ = '(C) 2010, Giuseppe Sucameli'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
from qgis.PyQt.QtCore import Qt, QProcess, QUrl, QIODevice, QCoreApplication, pyqtSignal
from qgis.PyQt.QtWidgets import QDialog, QDialogButtonBox, QMessageBox, QErrorMessage, QApplication
from qgis.PyQt.QtGui import QIcon, QDesktopServices
# to know the os
import platform
from .ui_dialogBase import Ui_GdalToolsDialog as Ui_Dialog
from . import GdalTools_utils as Utils
from .. import resources_rc # NOQA
import string
class GdalToolsBaseDialog(QDialog, Ui_Dialog):
refreshArgs = pyqtSignal()
okClicked = pyqtSignal()
closeClicked = pyqtSignal()
helpClicked = pyqtSignal()
processError = pyqtSignal(QProcess.ProcessError)
processFinished = pyqtSignal(int, QProcess.ExitStatus)
finished = pyqtSignal(bool)
valuesChanged = pyqtSignal(list)
def __init__(self, parent, iface, pluginBase, pluginName, pluginCommand):
QDialog.__init__(self, parent)
self.setAttribute(Qt.WA_DeleteOnClose)
self.iface = iface
self.process = QProcess(self)
Utils.setProcessEnvironment(self.process)
self.process.error.connect(self.processError)
self.process.finished.connect(self.processFinished)
self.setupUi(self)
self.arguments = []
self.editCmdBtn.setIcon(QIcon(":/icons/edit.png"))
self.editCmdBtn.toggled.connect(self.editCommand)
self.resetCmdBtn.setIcon(QIcon(":/icons/reset.png"))
self.resetCmdBtn.clicked.connect(self.resetCommand)
self.editCommand(False)
self.buttonBox.rejected.connect(self.reject)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.helpRequested.connect(self.help)
self.buttonBox.button(QDialogButtonBox.Ok).setDefault(True)
self.plugin = pluginBase
self.valuesChanged.connect(self.handleRefreshArgs)
self.pluginLayout.addWidget(self.plugin)
self.plugin.setFocus()
self.setWindowTitle(pluginName)
self.setPluginCommand(pluginCommand)
def setPluginCommand(self, cmd):
# on Windows replace the .py with .bat extension
if platform.system() == "Windows" and cmd[-3:] == ".py":
self.command = cmd[:-3] + ".bat"
else:
self.command = cmd
if cmd[-3:] == ".py":
self.helpFileName = cmd[:-3] + ".html"
else:
self.helpFileName = cmd + ".html"
def editCommand(self, enabled):
if not self.commandIsEnabled():
return
self.editCmdBtn.setChecked(enabled)
self.resetCmdBtn.setEnabled(enabled)
self.textEditCommand.setReadOnly(not enabled)
self.controlsWidget.setEnabled(not enabled)
self.refreshArgs.emit()
def resetCommand(self):
if not self.commandIsEditable():
return
self.refreshArgs.emit()
def commandIsEditable(self):
return self.commandIsEnabled() and self.editCmdBtn.isChecked()
def setCommandViewerEnabled(self, enable):
if not enable:
self.editCommand(False)
self.commandWidget.setEnabled(enable)
def commandIsEnabled(self):
return self.commandWidget.isEnabled()
def reject(self):
if self.process.state() != QProcess.NotRunning:
ret = QMessageBox.warning(self, self.tr("Warning"), self.tr("The command is still running. \nDo you want terminate it anyway?"), QMessageBox.Yes | QMessageBox.No)
if ret == QMessageBox.No:
return
self.process.error.disconnect(self.processError)
self.process.finished.disconnect(self.processFinished)
self.closeClicked.emit()
def accept(self):
self.okClicked.emit()
def help(self):
self.helpClicked.emit()
# show the online tool documentation in the default browser
def onHelp(self):
helpPath = Utils.getHelpPath()
if helpPath == '':
url = QUrl("http://www.gdal.org/" + self.helpFileName)
else:
url = QUrl.fromLocalFile(helpPath + '/' + self.helpFileName)
QDesktopServices.openUrl(url)
# called when a value in the plugin widget interface changed
def handleRefreshArgs(self, args):
self.arguments = [unicode(a) for a in args]
if not self.commandIsEnabled():
self.textEditCommand.setPlainText(self.command)
else:
self.textEditCommand.setPlainText(self.command + " " + Utils.escapeAndJoin(self.arguments))
# enables the OK button
def enableRun(self, enable=True):
self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(enable)
# start the command execution
def onRun(self):
self.enableRun(False)
self.setCursor(Qt.WaitCursor)
if not self.commandIsEditable():
#print(self.command+' '+unicode(self.arguments))
self.process.start(self.command, self.arguments, QIODevice.ReadOnly)
else:
self.process.start(self.textEditCommand.toPlainText(), QIODevice.ReadOnly)
# stop the command execution
def stop(self):
self.enableRun(True)
self.setCursor(Qt.ArrowCursor)
self.process.kill()
# called on closing the dialog, stop the process if it's running
def onClosing(self):
self.stop()
QDialog.reject(self)
# called if an error occurs when the command has not already finished, shows the occurred error message
def onError(self, error):
if error == QProcess.FailedToStart:
msg = QCoreApplication.translate("GdalTools", "The process failed to start. Either the invoked program is missing, or you may have insufficient permissions to invoke the program.")
elif error == QProcess.Crashed:
msg = QCoreApplication.translate("GdalTools", "The process crashed some time after starting successfully.")
else:
msg = QCoreApplication.translate("GdalTools", "An unknown error occurred.")
QErrorMessage(self).showMessage(msg)
QApplication.processEvents() # give the user chance to see the message
self.stop()
# called when the command finished its execution, shows an error message if there's one
# and, if required, load the output file in canvas
def onFinished(self, exitCode, status):
if status == QProcess.CrashExit:
self.stop()
return
if self.command.find("gdalinfo") != -1 and exitCode == 0:
self.finished.emit(self.loadCheckBox.isChecked())
self.stop()
return
# show the error message if there's one, otherwise show the process output message
msg = unicode(self.process.readAllStandardError())
if msg == '':
outMessages = unicode(self.process.readAllStandardOutput()).splitlines()
# make sure to not show the help
for m in outMessages:
m = string.strip(m)
if m == '':
continue
# TODO fix this
#if m.contains( QRegExp( "^(?:[Uu]sage:\\s)?" + QRegExp.escape(self.command) + "\\s" ) ):
# if msg.isEmpty():
# msg = self.tr ( "Invalid parameters." )
# break
#if m.contains( QRegExp( "0(?:\\.+[1-9]0{1,2})+" ) ):
# continue
if msg:
msg += "\n"
msg += m
QErrorMessage(self).showMessage(msg.replace("\n", "<br>"))
if exitCode == 0:
self.finished.emit(self.loadCheckBox.isChecked())
self.stop()
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