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Base class for dialogs. WIP

git-svn-id: http://sextante.googlecode.com/svn/trunk/soft/bindings/qgis-plugin@302 881b9c09-3ef8-f3c2-ec3d-21d735c97f4d
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cpolymeris@gmail.com
cpolymeris@gmail.com committed Jul 15, 2012
1 parent 6dfff31 commit fa4092ff05db57c40d6b28d6e4d9ce822b95131e
Showing with 287 additions and 103 deletions.
  1. +272 −0 src/sextante/gui/AlgorithmExecutionDialog.py
  2. +12 −100 src/sextante/gui/ParametersDialog.py
  3. +3 −3 src/sextante/gui/ParametersPanel.py
@@ -0,0 +1,272 @@
#!/usr/bin/env python
# -*- coding: latin-1 -*-
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyQt4 import QtCore, QtGui, QtWebKit
from sextante.core.QGisLayers import QGisLayers
from sextante.parameters.ParameterRaster import ParameterRaster
from sextante.parameters.ParameterVector import ParameterVector
from sextante.parameters.ParameterBoolean import ParameterBoolean
from sextante.parameters.ParameterSelection import ParameterSelection
from sextante.parameters.ParameterMultipleInput import ParameterMultipleInput
from sextante.parameters.ParameterFixedTable import ParameterFixedTable
from sextante.parameters.ParameterTableField import ParameterTableField
from sextante.parameters.ParameterTable import ParameterTable
from sextante.gui.AlgorithmExecutor import AlgorithmExecutor
from sextante.core.SextanteLog import SextanteLog
from sextante.gui.SextantePostprocessing import SextantePostprocessing
from sextante.parameters.ParameterRange import ParameterRange
from sextante.parameters.ParameterNumber import ParameterNumber

from sextante.gui.ParametersPanel import ParametersPanel
from sextante.parameters.ParameterFile import ParameterFile
from sextante.parameters.ParameterCrs import ParameterCrs
from sextante.core.SextanteConfig import SextanteConfig
from sextante.parameters.ParameterExtent import ParameterExtent
from sextante.outputs.OutputHTML import OutputHTML
from sextante.outputs.OutputRaster import OutputRaster
from sextante.outputs.OutputVector import OutputVector
from sextante.outputs.OutputTable import OutputTable
from sextante.core.WrongHelpFileException import WrongHelpFileException
import os
from sextante.gui.UnthreadedAlgorithmExecutor import UnthreadedAlgorithmExecutor

try:
_fromUtf8 = QtCore.QString.fromUtf8
except AttributeError:
_fromUtf8 = lambda s: s

class AlgorithmExecutionDialog(QtGui.QDialog):
'''Base class for dialogs that execute algorithms'''
def __init__(self, alg, mainWidget):
QtGui.QDialog.__init__(self, None, QtCore.Qt.WindowSystemMenuHint | QtCore.Qt.WindowTitleHint)
self.executed = False
self.mainWidget = mainWidget
self.alg = alg
self.resize(650, 450)
self.buttonBox = QtGui.QDialogButtonBox()
self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
self.buttonBox.setStandardButtons(
QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Close|QtGui.QDialogButtonBox.Ok)
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).setEnabled(False)

self.scrollArea = QtGui.QScrollArea()
if self.mainWidget:
self.scrollArea.setWidget(self.mainWidget)
self.scrollArea.setWidgetResizable(True)
self.setWindowTitle(self.alg.name)
self.progressLabel = QtGui.QLabel()
self.progress = QtGui.QProgressBar()
self.progress.setMinimum(0)
self.progress.setMaximum(100)
self.progress.setValue(0)
self.verticalLayout = QtGui.QVBoxLayout(self)
self.verticalLayout.setSpacing(2)
self.verticalLayout.setMargin(0)
self.tabWidget = QtGui.QTabWidget()
self.tabWidget.setMinimumWidth(300)
self.tabWidget.addTab(self.scrollArea, "Parameters")
self.verticalLayout.addWidget(self.tabWidget)
self.webView = QtWebKit.QWebView()
cssUrl = QtCore.QUrl(os.path.join(os.path.dirname(__file__), "help", "help.css"))
self.webView.settings().setUserStyleSheetUrl(cssUrl)
html = None
try:
if self.alg.helpFile():
helpFile = self.alg.helpFile()
else:
html = "<h2>Sorry, no help is available for this algorithm.</h2>"
except WrongHelpFileException, e:
html = e.msg
self.webView.setHtml("<h2>Could not open help file :-( </h2>")
try:
if html:
self.webView.setHtml(html)
else:
url = QtCore.QUrl(helpFile)
self.webView.load(url)
except:
self.webView.setHtml("<h2>Could not open help file :-( </h2>")
self.tabWidget.addTab(self.webView, "Help")
self.verticalLayout.addWidget(self.progressLabel)
self.verticalLayout.addWidget(self.progress)
self.verticalLayout.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout)
self.buttonBox.accepted.connect(self.accept)
self.buttonBox.rejected.connect(self.close)
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).clicked.connect(self.cancel)
#~ QtCore.QMetaObject.connectSlotsByName(self)


def setParamValues(self):
params = self.alg.parameters
outputs = self.alg.outputs

for param in params:
if not self.setParamValue(param, self.paramTable.valueItems[param.name]):
return False

for output in outputs:
if output.hidden:
continue
output.value = self.paramTable.valueItems[output.name].getValue()
if not SextanteConfig.getSetting(SextanteConfig.TABLE_LIKE_PARAM_PANEL):
if isinstance(output, (OutputRaster, OutputVector, OutputTable, OutputHTML)):
output.open = self.paramTable.checkBoxes[output.name].isChecked()

return True

def setParamValue(self, param, widget):
if isinstance(param, ParameterRaster):
return param.setValue(widget.getValue())
elif isinstance(param, (ParameterVector, ParameterTable)):
try:
return param.setValue(widget.itemData(widget.currentIndex()).toPyObject())
except:
return param.setValue(widget.getValue())
elif isinstance(param, ParameterBoolean):
return param.setValue(widget.currentIndex() == 0)
elif isinstance(param, ParameterSelection):
return param.setValue(widget.currentIndex())
elif isinstance(param, ParameterFixedTable):
return param.setValue(widget.table)
elif isinstance(param, ParameterRange):
return param.setValue(widget.getValue())
if isinstance(param, ParameterTableField):
return param.setValue(widget.currentText())
elif isinstance(param, ParameterMultipleInput):
if param.datatype == ParameterMultipleInput.TYPE_VECTOR_ANY:
options = QGisLayers.getVectorLayers()
else:
options = QGisLayers.getRasterLayers()
value = []
for index in widget.selectedoptions:
value.append(options[index])
return param.setValue(value)
elif isinstance(param, (ParameterNumber, ParameterFile, ParameterCrs, ParameterExtent)):
return param.setValue(widget.getValue())
else:
return param.setValue(str(widget.text()))

@pyqtSlot()
def accept(self):
#~ try:
if self.setParamValues():
msg = self.alg.checkParameterValuesBeforeExecuting()
if msg:
QMessageBox.critical(self, "Unable to execute algorithm", msg)
return
self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(False)
self.buttonBox.button(QtGui.QDialogButtonBox.Close).setEnabled(False)
buttons = self.paramTable.iterateButtons
iterateParam = None

for i in range(len(buttons.values())):
button = buttons.values()[i]
if button.isChecked():
iterateParam = buttons.keys()[i]
break

self.progress.setMaximum(0)
self.progressLabel.setText("Processing algorithm...")
QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
useThread = SextanteConfig.getSetting(SextanteConfig.USE_THREADS)
if useThread:
if iterateParam:
self.algEx = AlgorithmExecutor(self.alg, iterateParam)
else:
command = self.alg.getAsCommand()
if command:
SextanteLog.addToLog(SextanteLog.LOG_ALGORITHM, command)
self.algEx = AlgorithmExecutor(self.alg)
self.algEx.finished.connect(self.finish)
self.algEx.error.connect(self.error)
self.algEx.percentageChanged.connect(self.setPercentage)
self.algEx.textChanged.connect(self.setText)
self.algEx.iterated.connect(self.iterate)
self.algEx.start()
SextanteLog.addToLog(SextanteLog.LOG_INFO,
"Algorithm %s started" % self.alg.name)
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).setEnabled(True)
self.finish()
else:
keepOpen = SextanteConfig.getSetting(SextanteConfig.KEEP_DIALOG_OPEN)
if iterateParam:
UnthreadedAlgorithmExecutor.runalgIterating(self.alg, iterateParam, self)
else:
command = self.alg.getAsCommand()
if command:
SextanteLog.addToLog(SextanteLog.LOG_ALGORITHM, command)
if UnthreadedAlgorithmExecutor.runalg(self.alg, self):
SextantePostprocessing.handleAlgorithmResults(self.alg, not keepOpen)
self.executed = True
QApplication.restoreOverrideCursor()
if not keepOpen:
self.close()
else:
self.progressLabel.setText("")
self.progress.setMaximum(100)
self.progress.setValue(0)
self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(True)
self.buttonBox.button(QtGui.QDialogButtonBox.Close).setEnabled(True)
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).setEnabled(False)


else:
QMessageBox.critical(self, "Unable to execute algorithm", "Wrong or missing parameter values")

@pyqtSlot()
def finish(self):
self.executed = True
SextanteLog.addToLog(SextanteLog.LOG_INFO,
"Algorithm %s finished correctly" % self.alg.name)
QApplication.restoreOverrideCursor()
keepOpen = SextanteConfig.getSetting(SextanteConfig.KEEP_DIALOG_OPEN)
if not keepOpen:
self.close()
else:
self.progressLabel.setText("")
self.progress.setMaximum(100)
self.progress.setValue(0)
self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(True)
self.buttonBox.button(QtGui.QDialogButtonBox.Close).setEnabled(True)
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).setEnabled(False)

@pyqtSlot(str)
def error(self, msg):
self.algEx.finished.disconnect()
QApplication.restoreOverrideCursor()
QMessageBox.critical(self, "Error", msg)
SextanteLog.addToLog(SextanteLog.LOG_ERROR, msg)
keepOpen = SextanteConfig.getSetting(SextanteConfig.KEEP_DIALOG_OPEN)
if not keepOpen:
self.close()
else:
self.progressLabel.setText("")
self.progress.setValue(0)
self.buttonBox.button(QtGui.QDialogButtonBox.Ok).setEnabled(True)

@pyqtSlot(int)
def iterate(self, i):
SextanteLog.addToLog(SextanteLog.LOG_INFO,
"Algorithm %s iteration #%i completed" % (self.alg.name, i))

@pyqtSlot()
def cancel(self):
SextanteLog.addToLog(SextanteLog.LOG_INFO,
"Algorithm %s canceled" % self.alg.name)
try:
self.algEx.finished.disconnect()
self.algEx.terminate()
QApplication.restoreOverrideCursor()
self.buttonBox.button(QtGui.QDialogButtonBox.Cancel).setEnabled(False)
except:
pass

def setPercentage(self, i):
if self.progress.maximum() == 0:
self.progress.setMaximum(100)
self.progress.setValue(i)

def setText(self, text):
self.progressLabel.setText(text)

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