class ModelerParametersDialog(QDialog):
def __init__(self, alg, model, algName=None, configuration=None):
QDialog.__init__(self)
self.setModal(True)
self._alg = alg # The algorithm to define in this dialog. It is an instance of QgsProcessingAlgorithm
self.model = model # The model this algorithm is going to be added to. It is an instance of QgsProcessingModelAlgorithm
self.childId = algName # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.configuration = configuration
self.context = createContext()
self.widget_labels = {}
class ContextGenerator(QgsProcessingContextGenerator):
def __init__(self, context):
super().__init__()
self.processing_context = context
def processingContext(self):
return self.processing_context
self.context_generator = ContextGenerator(self.context)
self.setupUi()
self.params = None
settings = QgsSettings()
self.restoreGeometry(settings.value("/Processing/modelParametersDialogGeometry", QByteArray()))
def closeEvent(self, event):
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDialogGeometry", self.saveGeometry())
super(ModelerParametersDialog, self).closeEvent(event)
def setupUi(self):
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.algorithmItem = None
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel | QDialogButtonBox.Ok | QDialogButtonBox.Help)
self.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
widget_context = QgsProcessingParameterWidgetContext()
widget_context.setProject(QgsProject.instance())
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setModel(self.model)
widget_context.setModelChildAlgorithmId(self.childId)
self.algorithmItem = QgsGui.instance().processingGuiRegistry().algorithmConfigurationWidget(self._alg)
if self.algorithmItem:
self.algorithmItem.setWidgetContext(widget_context)
self.algorithmItem.registerProcessingContextGenerator(self.context_generator)
if self.configuration:
self.algorithmItem.setConfiguration(self.configuration)
self.verticalLayout.addWidget(self.algorithmItem)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
wrapper = WidgetWrapperFactory.create_wrapper(param, self)
self.wrappers[param.name()] = wrapper
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(self.context_generator)
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
widget = wrapper
else:
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name()] = widget
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
label = wrapper.createLabel()
else:
tooltip = param.description()
widget.setToolTip(tooltip)
label = wrapper.label
self.widget_labels[param.name()] = label
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for dest in self._alg.destinationParameterDefinitions():
if dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if isinstance(dest, (QgsProcessingParameterRasterDestination, QgsProcessingParameterVectorDestination,
QgsProcessingParameterFeatureSink, QgsProcessingParameterFileDestination, QgsProcessingParameterFolderDestination)):
label = QLabel(dest.description())
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(self.tr('[Enter name if this is a final result]'))
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[dest.name()] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.verticalLayout2.addWidget(self.scrollArea)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
self.buttonBox.helpRequested.connect(self.openHelp)
QMetaObject.connectSlotsByName(self)
def getAvailableDependencies(self): # spellok
if self.childId is None:
dependent = []
else:
dependent = list(self.model.dependentChildAlgorithms(self.childId))
dependent.append(self.childId)
opts = []
for alg in list(self.model.childAlgorithms().values()):
if alg.childId() not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([alg.description() for alg in self.getAvailableDependencies()]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
wrapper.setVisible(self.showAdvanced)
else:
wrapper.widget.setVisible(self.showAdvanced)
self.widget_labels[param.name()].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outTypes=[], dataTypes=[]):
# upgrade paramType to list
if paramType is None:
paramType = []
elif not isinstance(paramType, (tuple, list)):
paramType = [paramType]
if outTypes is None:
outTypes = []
elif not isinstance(outTypes, (tuple, list)):
outTypes = [outTypes]
return self.model.availableSourcesForChild(self.childId, [p.typeName() for p in paramType if
issubclass(p, QgsProcessingParameterDefinition)],
[o.typeName() for o in outTypes if
issubclass(o, QgsProcessingOutputDefinition)], dataTypes)
def resolveValueDescription(self, value):
if isinstance(value, QgsProcessingModelChildParameterSource):
if value.source() == QgsProcessingModelChildParameterSource.StaticValue:
return value.staticValue()
elif value.source() == QgsProcessingModelChildParameterSource.ModelParameter:
return self.model.parameterDefinition(value.parameterName()).description()
elif value.source() == QgsProcessingModelChildParameterSource.ChildOutput:
alg = self.model.childAlgorithm(value.outputChildId())
return self.tr("'{0}' from algorithm '{1}'").format(
alg.algorithm().outputDefinition(value.outputName()).description(), alg.description())
return value
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(param.defaultValue())
wrapper.setWidgetValue(value)
else:
if value is None:
value = param.defaultValue()
if isinstance(value,
QgsProcessingModelChildParameterSource) and value.source() == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
wrapper.setValue(value)
for name, out in alg.modelOutputs().items():
if out.childOutputName() in self.valueItems:
self.valueItems[out.childOutputName()].setText(out.name())
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.childId() in alg.dependencies():
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
if self.algorithmItem:
alg.setConfiguration(self.algorithmItem.configuration())
self._alg = alg.algorithm().create(self.algorithmItem.configuration())
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
try:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, WidgetWrapper):
val = wrapper.value()
elif issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
val = wrapper.value()
else:
val = wrapper.parameterValue()
except InvalidParameterValue:
self.bar.pushMessage(self.tr("Error"),
self.tr("Wrong or missing value for parameter '{}'").format(param.description()),
level=Qgis.Warning)
return None
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
elif not (isinstance(val, list) and all(
[isinstance(subval, QgsProcessingModelChildParameterSource) for subval in val])):
val = [QgsProcessingModelChildParameterSource.fromStaticValue(val)]
for subval in val:
if (isinstance(subval, QgsProcessingModelChildParameterSource) and
subval.source() == QgsProcessingModelChildParameterSource.StaticValue and
not param.checkValueIsAcceptable(subval.staticValue())) \
or (subval is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.bar.pushMessage(self.tr("Error"), self.tr("Wrong or missing value for parameter '{}'").format(
param.description()),
level=Qgis.Warning)
return None
alg.addParameterSources(param.name(), val)
outputs = {}
for dest in self._alg.destinationParameterDefinitions():
if not dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
name = self.valueItems[dest.name()].text()
if name.strip() != '':
output = QgsProcessingModelOutput(name, name)
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[name] = output
if dest.flags() & QgsProcessingParameterDefinition.FlagIsModelOutput:
if dest.name() not in outputs:
output = QgsProcessingModelOutput(dest.name(), dest.name())
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[dest.name()] = output
alg.setModelOutputs(outputs)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
dep_ids = []
for selected in selectedOptions:
dep_ids.append(availableDependencies[selected].childId()) # spellok
alg.setDependencies(dep_ids)
#try:
# self._alg.processBeforeAddingToModeler(alg, self.model)
#except:
# pass
return alg
def okPressed(self):
alg = self.createAlgorithm()
if alg is not None:
self.accept()
def cancelPressed(self):
self.reject()
def openHelp(self):
algHelp = self._alg.helpUrl()
if not algHelp:
algHelp = QgsHelp.helpUrl("processing_algs/{}/{}.html#{}".format(
self._alg.provider().helpId(), self._alg.groupId(), "{}{}".format(self._alg.provider().helpId(), self._alg.name()))).toString()
if algHelp not in [None, ""]:
webbrowser.open(algHelp)
class ModelerParametersDialog(QDialog):
def __init__(self, alg, model, algName=None, configuration=None):
QDialog.__init__(self)
self.setModal(True)
self._alg = alg # The algorithm to define in this dialog. It is an instance of QgsProcessingAlgorithm
self.model = model # The model this algorithm is going to be added to. It is an instance of QgsProcessingModelAlgorithm
self.childId = algName # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.configuration = configuration
self.context = createContext()
self.widget_labels = {}
class ContextGenerator(QgsProcessingContextGenerator):
def __init__(self, context):
super().__init__()
self.processing_context = context
def processingContext(self):
return self.processing_context
self.context_generator = ContextGenerator(self.context)
self.setupUi()
self.params = None
settings = QgsSettings()
self.restoreGeometry(
settings.value("/Processing/modelParametersDialogGeometry",
QByteArray()))
def closeEvent(self, event):
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDialogGeometry",
self.saveGeometry())
super(ModelerParametersDialog, self).closeEvent(event)
def setupUi(self):
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.algorithmItem = None
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel
| QDialogButtonBox.Ok
| QDialogButtonBox.Help)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
self.algorithmItem = QgsGui.instance().processingGuiRegistry(
).algorithmConfigurationWidget(self._alg)
if self.configuration:
self.algorithmItem.setConfiguration(self.configuration)
self.verticalLayout.addWidget(self.algorithmItem)
widget_context = QgsProcessingParameterWidgetContext()
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setModel(self.model)
widget_context.setModelChildAlgorithmId(self.childId)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(
self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination(
) or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
wrapper = WidgetWrapperFactory.create_wrapper(param, self)
self.wrappers[param.name()] = wrapper
if issubclass(wrapper.__class__,
QgsProcessingModelerParameterWidget):
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(
self.context_generator)
widget = wrapper
else:
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name()] = widget
if issubclass(wrapper.__class__,
QgsProcessingModelerParameterWidget):
label = wrapper.createLabel()
else:
tooltip = param.description()
widget.setToolTip(tooltip)
label = wrapper.label
self.widget_labels[param.name()] = label
if param.flags(
) & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for dest in self._alg.destinationParameterDefinitions():
if dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if isinstance(dest, (QgsProcessingParameterRasterDestination,
QgsProcessingParameterVectorDestination,
QgsProcessingParameterFeatureSink,
QgsProcessingParameterFileDestination,
QgsProcessingParameterFolderDestination)):
label = QLabel(dest.description())
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(
self.tr('[Enter name if this is a final result]'))
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[dest.name()] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.verticalLayout2.addWidget(self.scrollArea)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
self.buttonBox.helpRequested.connect(self.openHelp)
QMetaObject.connectSlotsByName(self)
def getAvailableDependencies(self): # spellok
if self.childId is None:
dependent = []
else:
dependent = list(self.model.dependentChildAlgorithms(self.childId))
dependent.append(self.childId)
opts = []
for alg in list(self.model.childAlgorithms().values()):
if alg.childId() not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([
alg.description() for alg in self.getAvailableDependencies()
]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__,
QgsProcessingModelerParameterWidget):
wrapper.setVisible(self.showAdvanced)
else:
wrapper.widget.setVisible(self.showAdvanced)
self.widget_labels[param.name()].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outTypes=[], dataTypes=[]):
# upgrade paramType to list
if paramType is None:
paramType = []
elif not isinstance(paramType, (tuple, list)):
paramType = [paramType]
if outTypes is None:
outTypes = []
elif not isinstance(outTypes, (tuple, list)):
outTypes = [outTypes]
return self.model.availableSourcesForChild(self.childId, [
p.typeName() for p in paramType
if issubclass(p, QgsProcessingParameterDefinition)
], [
o.typeName()
for o in outTypes if issubclass(o, QgsProcessingOutputDefinition)
], dataTypes)
def resolveValueDescription(self, value):
if isinstance(value, QgsProcessingModelChildParameterSource):
if value.source(
) == QgsProcessingModelChildParameterSource.StaticValue:
return value.staticValue()
elif value.source(
) == QgsProcessingModelChildParameterSource.ModelParameter:
return self.model.parameterDefinition(
value.parameterName()).description()
elif value.source(
) == QgsProcessingModelChildParameterSource.ChildOutput:
alg = self.model.childAlgorithm(value.outputChildId())
return self.tr("'{0}' from algorithm '{1}'").format(
alg.algorithm().outputDefinition(
value.outputName()).description(), alg.description())
return value
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags(
) & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__,
QgsProcessingModelerParameterWidget):
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(
param.defaultValue())
wrapper.setWidgetValue(value)
else:
if value is None:
value = param.defaultValue()
if isinstance(
value, QgsProcessingModelChildParameterSource
) and value.source(
) == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
wrapper.setValue(value)
for name, out in list(alg.modelOutputs().items()):
if out.childOutputName() in self.valueItems:
self.valueItems[out.childOutputName()].setText(out.name())
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.childId() in alg.dependencies():
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
if self.algorithmItem:
alg.setConfiguration(self.algorithmItem.configuration())
self._alg = alg.algorithm().create(
self.algorithmItem.configuration())
for param in self._alg.parameterDefinitions():
if param.isDestination(
) or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
try:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__,
QgsProcessingModelerParameterWidget):
val = wrapper.value()
else:
val = wrapper.parameterValue()
except InvalidParameterValue:
self.bar.pushMessage(
self.tr("Error"),
self.tr(
"Wrong or missing value for parameter '{}'").format(
param.description()),
level=Qgis.Warning)
return None
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
elif not (isinstance(val, list) and all([
isinstance(subval, QgsProcessingModelChildParameterSource)
for subval in val
])):
val = [
QgsProcessingModelChildParameterSource.fromStaticValue(val)
]
for subval in val:
if (isinstance(subval, QgsProcessingModelChildParameterSource) and
subval.source() == QgsProcessingModelChildParameterSource.StaticValue and
not param.checkValueIsAcceptable(subval.staticValue())) \
or (subval is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.bar.pushMessage(
self.tr("Error"),
self.tr("Wrong or missing value for parameter '{}'"
).format(param.description()),
level=Qgis.Warning)
return None
alg.addParameterSources(param.name(), val)
outputs = {}
for dest in self._alg.destinationParameterDefinitions():
if not dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
name = self.valueItems[dest.name()].text()
if name.strip() != '':
output = QgsProcessingModelOutput(name, name)
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[name] = output
if dest.flags(
) & QgsProcessingParameterDefinition.FlagIsModelOutput:
if dest.name() not in outputs:
output = QgsProcessingModelOutput(dest.name(), dest.name())
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[dest.name()] = output
alg.setModelOutputs(outputs)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
dep_ids = []
for selected in selectedOptions:
dep_ids.append(
availableDependencies[selected].childId()) # spellok
alg.setDependencies(dep_ids)
#try:
# self._alg.processBeforeAddingToModeler(alg, self.model)
#except:
# pass
return alg
def okPressed(self):
alg = self.createAlgorithm()
if alg is not None:
self.accept()
def cancelPressed(self):
self.reject()
def openHelp(self):
algHelp = self._alg.helpUrl()
if not algHelp:
algHelp = QgsHelp.helpUrl("processing_algs/{}/{}.html#{}".format(
self._alg.provider().helpId(), self._alg.groupId(),
"{}{}".format(self._alg.provider().helpId(),
self._alg.name()))).toString()
if algHelp not in [None, ""]:
webbrowser.open(algHelp)
class ModelerDialog(BASE, WIDGET):
ALG_ITEM = 'ALG_ITEM'
PROVIDER_ITEM = 'PROVIDER_ITEM'
GROUP_ITEM = 'GROUP_ITEM'
NAME_ROLE = Qt.UserRole
TAG_ROLE = Qt.UserRole + 1
TYPE_ROLE = Qt.UserRole + 2
CANVAS_SIZE = 4000
update_model = pyqtSignal()
def __init__(self, model=None):
super().__init__(None)
self.setAttribute(Qt.WA_DeleteOnClose)
self.setupUi(self)
self._variables_scope = None
# LOTS of bug reports when we include the dock creation in the UI file
# see e.g. #16428, #19068
# So just roll it all by hand......!
self.propertiesDock = QgsDockWidget(self)
self.propertiesDock.setFeatures(
QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.propertiesDock.setObjectName("propertiesDock")
propertiesDockContents = QWidget()
self.verticalDockLayout_1 = QVBoxLayout(propertiesDockContents)
self.verticalDockLayout_1.setContentsMargins(0, 0, 0, 0)
self.verticalDockLayout_1.setSpacing(0)
self.scrollArea_1 = QgsScrollArea(propertiesDockContents)
sizePolicy = QSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.MinimumExpanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.scrollArea_1.sizePolicy().hasHeightForWidth())
self.scrollArea_1.setSizePolicy(sizePolicy)
self.scrollArea_1.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_1.setFrameShape(QFrame.NoFrame)
self.scrollArea_1.setFrameShadow(QFrame.Plain)
self.scrollArea_1.setWidgetResizable(True)
self.scrollAreaWidgetContents_1 = QWidget()
self.gridLayout = QGridLayout(self.scrollAreaWidgetContents_1)
self.gridLayout.setContentsMargins(6, 6, 6, 6)
self.gridLayout.setSpacing(4)
self.label_1 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_1, 0, 0, 1, 1)
self.textName = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textName, 0, 1, 1, 1)
self.label_2 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
self.textGroup = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textGroup, 1, 1, 1, 1)
self.label_1.setText(self.tr("Name"))
self.textName.setToolTip(self.tr("Enter model name here"))
self.label_2.setText(self.tr("Group"))
self.textGroup.setToolTip(self.tr("Enter group name here"))
self.scrollArea_1.setWidget(self.scrollAreaWidgetContents_1)
self.verticalDockLayout_1.addWidget(self.scrollArea_1)
self.propertiesDock.setWidget(propertiesDockContents)
self.propertiesDock.setWindowTitle(self.tr("Model Properties"))
self.inputsDock = QgsDockWidget(self)
self.inputsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.inputsDock.setObjectName("inputsDock")
self.inputsDockContents = QWidget()
self.verticalLayout_3 = QVBoxLayout(self.inputsDockContents)
self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
self.scrollArea_2 = QgsScrollArea(self.inputsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_2.sizePolicy().hasHeightForWidth())
self.scrollArea_2.setSizePolicy(sizePolicy)
self.scrollArea_2.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_2.setFrameShape(QFrame.NoFrame)
self.scrollArea_2.setFrameShadow(QFrame.Plain)
self.scrollArea_2.setWidgetResizable(True)
self.scrollAreaWidgetContents_2 = QWidget()
self.verticalLayout = QVBoxLayout(self.scrollAreaWidgetContents_2)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setSpacing(0)
self.inputsTree = QTreeWidget(self.scrollAreaWidgetContents_2)
self.inputsTree.setAlternatingRowColors(True)
self.inputsTree.header().setVisible(False)
self.verticalLayout.addWidget(self.inputsTree)
self.scrollArea_2.setWidget(self.scrollAreaWidgetContents_2)
self.verticalLayout_3.addWidget(self.scrollArea_2)
self.inputsDock.setWidget(self.inputsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.inputsDock)
self.inputsDock.setWindowTitle(self.tr("Inputs"))
self.algorithmsDock = QgsDockWidget(self)
self.algorithmsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.algorithmsDock.setObjectName("algorithmsDock")
self.algorithmsDockContents = QWidget()
self.verticalLayout_4 = QVBoxLayout(self.algorithmsDockContents)
self.verticalLayout_4.setContentsMargins(0, 0, 0, 0)
self.scrollArea_3 = QgsScrollArea(self.algorithmsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_3.sizePolicy().hasHeightForWidth())
self.scrollArea_3.setSizePolicy(sizePolicy)
self.scrollArea_3.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_3.setFrameShape(QFrame.NoFrame)
self.scrollArea_3.setFrameShadow(QFrame.Plain)
self.scrollArea_3.setWidgetResizable(True)
self.scrollAreaWidgetContents_3 = QWidget()
self.verticalLayout_2 = QVBoxLayout(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.setContentsMargins(0, 0, 0, 0)
self.verticalLayout_2.setSpacing(4)
self.searchBox = QgsFilterLineEdit(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.addWidget(self.searchBox)
self.algorithmTree = QgsProcessingToolboxTreeView(None,
QgsApplication.processingRegistry())
self.algorithmTree.setAlternatingRowColors(True)
self.algorithmTree.header().setVisible(False)
self.verticalLayout_2.addWidget(self.algorithmTree)
self.scrollArea_3.setWidget(self.scrollAreaWidgetContents_3)
self.verticalLayout_4.addWidget(self.scrollArea_3)
self.algorithmsDock.setWidget(self.algorithmsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.algorithmsDock)
self.algorithmsDock.setWindowTitle(self.tr("Algorithms"))
self.searchBox.setToolTip(self.tr("Enter algorithm name to filter list"))
self.searchBox.setShowSearchIcon(True)
self.variables_dock = QgsDockWidget(self)
self.variables_dock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.variables_dock.setObjectName("variablesDock")
self.variables_dock_contents = QWidget()
vl_v = QVBoxLayout()
vl_v.setContentsMargins(0, 0, 0, 0)
self.variables_editor = QgsVariableEditorWidget()
vl_v.addWidget(self.variables_editor)
self.variables_dock_contents.setLayout(vl_v)
self.variables_dock.setWidget(self.variables_dock_contents)
self.addDockWidget(Qt.DockWidgetArea(1), self.variables_dock)
self.variables_dock.setWindowTitle(self.tr("Variables"))
self.addDockWidget(Qt.DockWidgetArea(1), self.propertiesDock)
self.tabifyDockWidget(self.propertiesDock, self.variables_dock)
self.variables_editor.scopeChanged.connect(self.variables_changed)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.centralWidget().layout().insertWidget(0, self.bar)
try:
self.setDockOptions(self.dockOptions() | QMainWindow.GroupedDragging)
except:
pass
if iface is not None:
self.mToolbar.setIconSize(iface.iconSize())
self.setStyleSheet(iface.mainWindow().styleSheet())
self.toolbutton_export_to_script = QToolButton()
self.toolbutton_export_to_script.setPopupMode(QToolButton.InstantPopup)
self.export_to_script_algorithm_action = QAction(QCoreApplication.translate('ModelerDialog', 'Export as Script Algorithm…'))
self.toolbutton_export_to_script.addActions([self.export_to_script_algorithm_action])
self.mToolbar.insertWidget(self.mActionExportImage, self.toolbutton_export_to_script)
self.export_to_script_algorithm_action.triggered.connect(self.export_as_script_algorithm)
self.mActionOpen.setIcon(
QgsApplication.getThemeIcon('/mActionFileOpen.svg'))
self.mActionSave.setIcon(
QgsApplication.getThemeIcon('/mActionFileSave.svg'))
self.mActionSaveAs.setIcon(
QgsApplication.getThemeIcon('/mActionFileSaveAs.svg'))
self.mActionSaveInProject.setIcon(
QgsApplication.getThemeIcon('/mAddToProject.svg'))
self.mActionZoomActual.setIcon(
QgsApplication.getThemeIcon('/mActionZoomActual.svg'))
self.mActionZoomIn.setIcon(
QgsApplication.getThemeIcon('/mActionZoomIn.svg'))
self.mActionZoomOut.setIcon(
QgsApplication.getThemeIcon('/mActionZoomOut.svg'))
self.mActionExportImage.setIcon(
QgsApplication.getThemeIcon('/mActionSaveMapAsImage.svg'))
self.mActionZoomToItems.setIcon(
QgsApplication.getThemeIcon('/mActionZoomFullExtent.svg'))
self.mActionExportPdf.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsPDF.svg'))
self.mActionExportSvg.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsSVG.svg'))
self.toolbutton_export_to_script.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsPython.svg'))
self.mActionEditHelp.setIcon(
QgsApplication.getThemeIcon('/mActionEditHelpContent.svg'))
self.mActionRun.setIcon(
QgsApplication.getThemeIcon('/mActionStart.svg'))
self.addDockWidget(Qt.LeftDockWidgetArea, self.propertiesDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.inputsDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.algorithmsDock)
self.tabifyDockWidget(self.inputsDock, self.algorithmsDock)
self.inputsDock.raise_()
self.setWindowFlags(Qt.WindowMinimizeButtonHint |
Qt.WindowMaximizeButtonHint |
Qt.WindowCloseButtonHint)
settings = QgsSettings()
self.restoreState(settings.value("/Processing/stateModeler", QByteArray()))
self.restoreGeometry(settings.value("/Processing/geometryModeler", QByteArray()))
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE, self.CANVAS_SIZE))
self.view.setScene(self.scene)
self.view.setAcceptDrops(True)
self.view.ensureVisible(0, 0, 10, 10)
self.view.scale(QgsApplication.desktop().logicalDpiX() / 96, QgsApplication.desktop().logicalDpiX() / 96)
def _dragEnterEvent(event):
if event.mimeData().hasText() or event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
event.acceptProposedAction()
else:
event.ignore()
def _dropEvent(event):
def alg_dropped(algorithm_id, pos):
alg = QgsApplication.processingRegistry().createAlgorithmById(algorithm_id)
if alg is not None:
self._addAlgorithm(alg, pos)
else:
assert False, algorithm_id
def input_dropped(id, pos):
if id in [param.id() for param in QgsApplication.instance().processingRegistry().parameterTypes()]:
self.addInputOfType(itemId, pos)
if event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
data = event.mimeData().data('application/x-vnd.qgis.qgis.algorithmid')
stream = QDataStream(data, QIODevice.ReadOnly)
algorithm_id = stream.readQString()
QTimer.singleShot(0, lambda id=algorithm_id, pos=self.view.mapToScene(event.pos()): alg_dropped(id, pos))
event.accept()
elif event.mimeData().hasText():
itemId = event.mimeData().text()
QTimer.singleShot(0, lambda id=itemId, pos=self.view.mapToScene(event.pos()): input_dropped(id, pos))
event.accept()
else:
event.ignore()
def _dragMoveEvent(event):
if event.mimeData().hasText() or event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
event.accept()
else:
event.ignore()
def _wheelEvent(event):
self.view.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
# "Normal" mouse has an angle delta of 120, precision mouses provide data
# faster, in smaller steps
factor = 1.0 + (factor - 1.0) / 120.0 * abs(event.angleDelta().y())
if (event.modifiers() == Qt.ControlModifier):
factor = 1.0 + (factor - 1.0) / 20.0
if event.angleDelta().y() < 0:
factor = 1 / factor
self.view.scale(factor, factor)
def _enterEvent(e):
QGraphicsView.enterEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mouseReleaseEvent(e):
QGraphicsView.mouseReleaseEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mousePressEvent(e):
if e.button() == Qt.MidButton:
self.previousMousePos = e.pos()
else:
QGraphicsView.mousePressEvent(self.view, e)
def _mouseMoveEvent(e):
if e.buttons() == Qt.MidButton:
offset = self.previousMousePos - e.pos()
self.previousMousePos = e.pos()
self.view.verticalScrollBar().setValue(self.view.verticalScrollBar().value() + offset.y())
self.view.horizontalScrollBar().setValue(self.view.horizontalScrollBar().value() + offset.x())
else:
QGraphicsView.mouseMoveEvent(self.view, e)
self.view.setDragMode(QGraphicsView.ScrollHandDrag)
self.view.dragEnterEvent = _dragEnterEvent
self.view.dropEvent = _dropEvent
self.view.dragMoveEvent = _dragMoveEvent
self.view.wheelEvent = _wheelEvent
self.view.enterEvent = _enterEvent
self.view.mousePressEvent = _mousePressEvent
self.view.mouseMoveEvent = _mouseMoveEvent
def _mimeDataInput(items):
mimeData = QMimeData()
text = items[0].data(0, Qt.UserRole)
mimeData.setText(text)
return mimeData
self.inputsTree.mimeData = _mimeDataInput
self.inputsTree.setDragDropMode(QTreeWidget.DragOnly)
self.inputsTree.setDropIndicatorShown(True)
self.algorithms_model = ModelerToolboxModel(self, QgsApplication.processingRegistry())
self.algorithmTree.setToolboxProxyModel(self.algorithms_model)
self.algorithmTree.setDragDropMode(QTreeWidget.DragOnly)
self.algorithmTree.setDropIndicatorShown(True)
filters = QgsProcessingToolboxProxyModel.Filters(QgsProcessingToolboxProxyModel.FilterModeler)
if ProcessingConfig.getSetting(ProcessingConfig.SHOW_ALGORITHMS_KNOWN_ISSUES):
filters |= QgsProcessingToolboxProxyModel.FilterShowKnownIssues
self.algorithmTree.setFilters(filters)
if hasattr(self.searchBox, 'setPlaceholderText'):
self.searchBox.setPlaceholderText(QCoreApplication.translate('ModelerDialog', 'Search…'))
if hasattr(self.textName, 'setPlaceholderText'):
self.textName.setPlaceholderText(self.tr('Enter model name here'))
if hasattr(self.textGroup, 'setPlaceholderText'):
self.textGroup.setPlaceholderText(self.tr('Enter group name here'))
# Connect signals and slots
self.inputsTree.doubleClicked.connect(self.addInput)
self.searchBox.textChanged.connect(self.algorithmTree.setFilterString)
self.algorithmTree.doubleClicked.connect(self.addAlgorithm)
# Ctrl+= should also trigger a zoom in action
ctrlEquals = QShortcut(QKeySequence("Ctrl+="), self)
ctrlEquals.activated.connect(self.zoomIn)
self.mActionOpen.triggered.connect(self.openModel)
self.mActionSave.triggered.connect(self.save)
self.mActionSaveAs.triggered.connect(self.saveAs)
self.mActionSaveInProject.triggered.connect(self.saveInProject)
self.mActionZoomIn.triggered.connect(self.zoomIn)
self.mActionZoomOut.triggered.connect(self.zoomOut)
self.mActionZoomActual.triggered.connect(self.zoomActual)
self.mActionZoomToItems.triggered.connect(self.zoomToItems)
self.mActionExportImage.triggered.connect(self.exportAsImage)
self.mActionExportPdf.triggered.connect(self.exportAsPdf)
self.mActionExportSvg.triggered.connect(self.exportAsSvg)
#self.mActionExportPython.triggered.connect(self.exportAsPython)
self.mActionEditHelp.triggered.connect(self.editHelp)
self.mActionRun.triggered.connect(self.runModel)
if model is not None:
self.model = model.create()
self.model.setSourceFilePath(model.sourceFilePath())
self.textGroup.setText(self.model.group())
self.textName.setText(self.model.displayName())
self.repaintModel()
else:
self.model = QgsProcessingModelAlgorithm()
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.update_variables_gui()
self.fillInputsTree()
self.view.centerOn(0, 0)
self.help = None
self.hasChanged = False
def closeEvent(self, evt):
settings = QgsSettings()
settings.setValue("/Processing/stateModeler", self.saveState())
settings.setValue("/Processing/geometryModeler", self.saveGeometry())
if self.hasChanged:
ret = QMessageBox.question(
self, self.tr('Save Model?'),
self.tr('There are unsaved changes in this model. Do you want to keep those?'),
QMessageBox.Save | QMessageBox.Cancel | QMessageBox.Discard, QMessageBox.Cancel)
if ret == QMessageBox.Save:
self.saveModel(False)
evt.accept()
elif ret == QMessageBox.Discard:
evt.accept()
else:
evt.ignore()
else:
evt.accept()
def editHelp(self):
alg = self.model
dlg = HelpEditionDialog(alg)
dlg.exec_()
if dlg.descriptions:
self.model.setHelpContent(dlg.descriptions)
self.hasChanged = True
def update_variables_gui(self):
variables_scope = QgsExpressionContextScope(self.tr('Model Variables'))
for k, v in self.model.variables().items():
variables_scope.setVariable(k, v)
variables_context = QgsExpressionContext()
variables_context.appendScope(variables_scope)
self.variables_editor.setContext(variables_context)
self.variables_editor.setEditableScopeIndex(0)
def variables_changed(self):
self.model.setVariables(self.variables_editor.variablesInActiveScope())
def runModel(self):
if len(self.model.childAlgorithms()) == 0:
self.bar.pushMessage("", self.tr("Model doesn't contain any algorithm and/or parameter and can't be executed"), level=Qgis.Warning, duration=5)
return
dlg = AlgorithmDialog(self.model.create(), parent=iface.mainWindow())
dlg.exec_()
def save(self):
self.saveModel(False)
def saveAs(self):
self.saveModel(True)
def saveInProject(self):
if not self.can_save():
return
self.model.setName(str(self.textName.text()))
self.model.setGroup(str(self.textGroup.text()))
self.model.setSourceFilePath(None)
project_provider = QgsApplication.processingRegistry().providerById(PROJECT_PROVIDER_ID)
project_provider.add_model(self.model)
self.update_model.emit()
self.bar.pushMessage("", self.tr("Model was saved inside current project"), level=Qgis.Success, duration=5)
self.hasChanged = False
QgsProject.instance().setDirty(True)
def zoomIn(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomOut(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
factor = 1 / factor
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomActual(self):
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
self.view.resetTransform()
self.view.scale(QgsApplication.desktop().logicalDpiX() / 96, QgsApplication.desktop().logicalDpiX() / 96)
self.view.centerOn(point)
def zoomToItems(self):
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
self.view.fitInView(totalRect, Qt.KeepAspectRatio)
def exportAsImage(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)'))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
imgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, imgRect, totalRect)
painter.end()
img.save(filename)
self.bar.pushMessage("", self.tr("Successfully exported model as image to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPdf(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As PDF'), '',
self.tr('PDF files (*.pdf *.PDF)'))
if not filename:
return
if not filename.lower().endswith('.pdf'):
filename += '.pdf'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
printerRect = QRectF(0, 0, totalRect.width(), totalRect.height())
printer = QPrinter()
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(filename)
printer.setPaperSize(QSizeF(printerRect.width(), printerRect.height()), QPrinter.DevicePixel)
printer.setFullPage(True)
painter = QPainter(printer)
self.scene.render(painter, printerRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Successfully exported model as PDF to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsSvg(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As SVG'), '',
self.tr('SVG files (*.svg *.SVG)'))
if not filename:
return
if not filename.lower().endswith('.svg'):
filename += '.svg'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
svgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
svg = QSvgGenerator()
svg.setFileName(filename)
svg.setSize(QSize(totalRect.width(), totalRect.height()))
svg.setViewBox(svgRect)
svg.setTitle(self.model.displayName())
painter = QPainter(svg)
self.scene.render(painter, svgRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Successfully exported model as SVG to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPython(self):
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Python Script'), '',
self.tr('Processing scripts (*.py *.PY)'))
if not filename:
return
if not filename.lower().endswith('.py'):
filename += '.py'
text = self.model.asPythonCode()
with codecs.open(filename, 'w', encoding='utf-8') as fout:
fout.write(text)
self.bar.pushMessage("", self.tr("Successfully exported model as python script to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
def can_save(self):
"""
Tests whether a model can be saved, or if it is not yet valid
:return: bool
"""
if str(self.textName.text()).strip() == '':
self.bar.pushWarning(
"", self.tr('Please a enter model name before saving')
)
return False
return True
def saveModel(self, saveAs):
if not self.can_save():
return
self.model.setName(str(self.textName.text()))
self.model.setGroup(str(self.textGroup.text()))
if self.model.sourceFilePath() and not saveAs:
filename = self.model.sourceFilePath()
else:
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3 *.MODEL3)'))
if filename:
if not filename.endswith('.model3'):
filename += '.model3'
self.model.setSourceFilePath(filename)
if filename:
if not self.model.toFile(filename):
if saveAs:
QMessageBox.warning(self, self.tr('I/O error'),
self.tr('Unable to save edits. Reason:\n {0}').format(str(sys.exc_info()[1])))
else:
QMessageBox.warning(self, self.tr("Can't save model"), QCoreApplication.translate('QgsPluginInstallerInstallingDialog', (
"This model can't be saved in its original location (probably you do not "
"have permission to do it). Please, use the 'Save as…' option."))
)
return
self.update_model.emit()
if saveAs:
self.bar.pushMessage("", self.tr("Model was correctly saved to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
else:
self.bar.pushMessage("", self.tr("Model was correctly saved"), level=Qgis.Success, duration=5)
self.hasChanged = False
def openModel(self):
filename, selected_filter = QFileDialog.getOpenFileName(self,
self.tr('Open Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3 *.MODEL3)'))
if filename:
self.loadModel(filename)
def loadModel(self, filename):
alg = QgsProcessingModelAlgorithm()
if alg.fromFile(filename):
self.model = alg
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.textGroup.setText(alg.group())
self.textName.setText(alg.name())
self.repaintModel()
self.update_variables_gui()
self.view.centerOn(0, 0)
self.hasChanged = False
else:
QgsMessageLog.logMessage(self.tr('Could not load model {0}').format(filename),
self.tr('Processing'),
Qgis.Critical)
QMessageBox.critical(self, self.tr('Open Model'),
self.tr('The selected model could not be loaded.\n'
'See the log for more information.'))
def repaintModel(self, controls=True):
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE,
self.CANVAS_SIZE))
self.scene.paintModel(self.model, controls)
self.view.setScene(self.scene)
def addInput(self):
item = self.inputsTree.currentItem()
param = item.data(0, Qt.UserRole)
self.addInputOfType(param)
def addInputOfType(self, paramType, pos=None):
dlg = ModelerParameterDefinitionDialog(self.model, paramType)
dlg.exec_()
if dlg.param is not None:
if pos is None:
pos = self.getPositionForParameterItem()
if isinstance(pos, QPoint):
pos = QPointF(pos)
component = QgsProcessingModelParameter(dlg.param.name())
component.setDescription(dlg.param.name())
component.setPosition(pos)
self.model.addModelParameter(dlg.param, component)
self.repaintModel()
# self.view.ensureVisible(self.scene.getLastParameterItem())
self.hasChanged = True
def getPositionForParameterItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if len(self.model.parameterComponents()) > 0:
maxX = max([i.position().x() for i in list(self.model.parameterComponents().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
else:
newX = MARGIN + BOX_WIDTH / 2
return QPointF(newX, MARGIN + BOX_HEIGHT / 2)
def fillInputsTree(self):
icon = QIcon(os.path.join(pluginPath, 'images', 'input.svg'))
parametersItem = QTreeWidgetItem()
parametersItem.setText(0, self.tr('Parameters'))
sortedParams = sorted(QgsApplication.instance().processingRegistry().parameterTypes(), key=lambda pt: pt.name())
for param in sortedParams:
if param.flags() & QgsProcessingParameterType.ExposeToModeler:
paramItem = QTreeWidgetItem()
paramItem.setText(0, param.name())
paramItem.setData(0, Qt.UserRole, param.id())
paramItem.setIcon(0, icon)
paramItem.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsDragEnabled)
paramItem.setToolTip(0, param.description())
parametersItem.addChild(paramItem)
self.inputsTree.addTopLevelItem(parametersItem)
parametersItem.setExpanded(True)
def addAlgorithm(self):
algorithm = self.algorithmTree.selectedAlgorithm()
if algorithm is not None:
alg = QgsApplication.processingRegistry().createAlgorithmById(algorithm.id())
self._addAlgorithm(alg)
def _addAlgorithm(self, alg, pos=None):
dlg = ModelerParametersDialog(alg, self.model)
if dlg.exec_():
alg = dlg.createAlgorithm()
if pos is None:
alg.setPosition(self.getPositionForAlgorithmItem())
else:
alg.setPosition(pos)
from processing.modeler.ModelerGraphicItem import ModelerGraphicItem
for i, out in enumerate(alg.modelOutputs()):
alg.modelOutput(out).setPosition(alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, (i + 1.5) *
ModelerGraphicItem.BOX_HEIGHT))
self.model.addChildAlgorithm(alg)
self.repaintModel()
self.hasChanged = True
def getPositionForAlgorithmItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if self.model.childAlgorithms():
maxX = max([alg.position().x() for alg in list(self.model.childAlgorithms().values())])
maxY = max([alg.position().y() for alg in list(self.model.childAlgorithms().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
newY = min(MARGIN + BOX_HEIGHT + maxY, self.CANVAS_SIZE -
BOX_HEIGHT)
else:
newX = MARGIN + BOX_WIDTH / 2
newY = MARGIN * 2 + BOX_HEIGHT + BOX_HEIGHT / 2
return QPointF(newX, newY)
def export_as_script_algorithm(self):
dlg = ScriptEditorDialog(None)
dlg.editor.setText('\n'.join(self.model.asPythonCode(QgsProcessing.PythonQgsProcessingAlgorithmSubclass, 4)))
dlg.show()
class ModelerParametersPanelWidget(QgsPanelWidget):
def __init__(self, alg, model, algName=None, configuration=None, dialog=None, context=None):
super().__init__()
self._alg = alg # The algorithm to define in this dialog. It is an instance of QgsProcessingAlgorithm
self.model = model # The model this algorithm is going to be added to. It is an instance of QgsProcessingModelAlgorithm
self.childId = algName # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.configuration = configuration
self.context = context
self.dialog = dialog
self.widget_labels = {}
class ContextGenerator(QgsProcessingContextGenerator):
def __init__(self, context):
super().__init__()
self.processing_context = context
def processingContext(self):
return self.processing_context
self.context_generator = ContextGenerator(self.context)
self.setupUi()
self.params = None
def algorithm(self):
return self._alg
def setupUi(self):
self.showAdvanced = False
self.wrappers = {}
self.algorithmItem = None
self.mainLayout = QVBoxLayout()
self.mainLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout = QVBoxLayout()
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setContentsMargins(0, 0, 0, 0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
widget_context = QgsProcessingParameterWidgetContext()
widget_context.setProject(QgsProject.instance())
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setActiveLayer(iface.activeLayer())
widget_context.setModel(self.model)
widget_context.setModelChildAlgorithmId(self.childId)
self.algorithmItem = QgsGui.instance().processingGuiRegistry().algorithmConfigurationWidget(self._alg)
if self.algorithmItem:
self.algorithmItem.setWidgetContext(widget_context)
self.algorithmItem.registerProcessingContextGenerator(self.context_generator)
if self.configuration:
self.algorithmItem.setConfiguration(self.configuration)
self.verticalLayout.addWidget(self.algorithmItem)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
wrapper = WidgetWrapperFactory.create_wrapper(param, self.dialog)
self.wrappers[param.name()] = wrapper
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(self.context_generator)
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
widget = wrapper
else:
widget = wrapper.widget
if widget is not None:
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
label = wrapper.createLabel()
else:
tooltip = param.description()
widget.setToolTip(tooltip)
label = wrapper.label
self.widget_labels[param.name()] = label
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for output in self._alg.destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
widget = QgsGui.processingGuiRegistry().createModelerParameterWidget(self.model,
self.childId,
output,
self.context)
widget.setDialog(self.dialog)
widget.setWidgetContext(widget_context)
widget.registerProcessingContextGenerator(self.context_generator)
self.wrappers[output.name()] = widget
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(self.tr('[Enter name if this is a final result]'))
label = widget.createLabel()
if label is not None:
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.scrollArea.setFrameStyle(QFrame.NoFrame)
self.verticalLayout2.addWidget(self.scrollArea)
w = QWidget()
w.setLayout(self.verticalLayout2)
self.mainLayout.addWidget(w)
self.setLayout(self.mainLayout)
def getAvailableDependencies(self):
if self.childId is None:
dependent = []
else:
dependent = list(self.model.dependentChildAlgorithms(self.childId))
dependent.append(self.childId)
opts = []
for alg in list(self.model.childAlgorithms().values()):
if alg.childId() not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([alg.description() for alg in self.getAvailableDependencies()])
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
wrapper.setVisible(self.showAdvanced)
else:
wrapper.widget.setVisible(self.showAdvanced)
self.widget_labels[param.name()].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outTypes=[], dataTypes=[]):
# upgrade paramType to list
if paramType is None:
paramType = []
elif not isinstance(paramType, (tuple, list)):
paramType = [paramType]
if outTypes is None:
outTypes = []
elif not isinstance(outTypes, (tuple, list)):
outTypes = [outTypes]
return self.model.availableSourcesForChild(self.childId, [p.typeName() for p in paramType if
issubclass(p, QgsProcessingParameterDefinition)],
[o.typeName() for o in outTypes if
issubclass(o, QgsProcessingOutputDefinition)], dataTypes)
def resolveValueDescription(self, value):
if isinstance(value, QgsProcessingModelChildParameterSource):
if value.source() == QgsProcessingModelChildParameterSource.StaticValue:
return value.staticValue()
elif value.source() == QgsProcessingModelChildParameterSource.ModelParameter:
return self.model.parameterDefinition(value.parameterName()).description()
elif value.source() == QgsProcessingModelChildParameterSource.ChildOutput:
alg = self.model.childAlgorithm(value.outputChildId())
output_name = alg.algorithm().outputDefinition(value.outputName()).description()
# see if this output has been named by the model designer -- if so, we use that friendly name
for name, output in alg.modelOutputs().items():
if output.childOutputName() == value.outputName():
output_name = name
break
return self.tr("'{0}' from algorithm '{1}'").format(output_name, alg.description())
return value
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(param.defaultValue())
wrapper.setWidgetValue(value)
else:
if value is None:
value = param.defaultValue()
if isinstance(value,
QgsProcessingModelChildParameterSource) and value.source() == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
wrapper.setValue(value)
for output in self.algorithm().destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
model_output_name = None
for name, out in alg.modelOutputs().items():
if out.childId() == self.childId and out.childOutputName() == output.name():
# this destination parameter is linked to a model output
model_output_name = out.name()
break
value = None
if model_output_name is None and output.name() in alg.parameterSources():
value = alg.parameterSources()[output.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[output.name()]
if model_output_name is not None:
wrapper.setToModelOutput(model_output_name)
elif value is not None or output.defaultValue() is not None:
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(output.defaultValue())
wrapper.setWidgetValue(value)
selected = []
dependencies = self.getAvailableDependencies()
for idx, dependency in enumerate(dependencies):
if dependency.childId() in alg.dependencies():
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
if self.algorithmItem:
alg.setConfiguration(self.algorithmItem.configuration())
self._alg = alg.algorithm().create(self.algorithmItem.configuration())
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
try:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, WidgetWrapper):
val = wrapper.value()
elif issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
val = wrapper.value()
else:
val = wrapper.parameterValue()
except InvalidParameterValue:
self.bar.pushMessage(self.tr("Error"),
self.tr("Wrong or missing value for parameter '{}'").format(param.description()),
level=Qgis.Warning)
return None
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
elif not (isinstance(val, list) and all(
[isinstance(subval, QgsProcessingModelChildParameterSource) for subval in val])):
val = [QgsProcessingModelChildParameterSource.fromStaticValue(val)]
for subval in val:
if (isinstance(subval, QgsProcessingModelChildParameterSource) and
subval.source() == QgsProcessingModelChildParameterSource.StaticValue and
not param.checkValueIsAcceptable(subval.staticValue())) \
or (subval is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.bar.pushMessage(self.tr("Error"), self.tr("Wrong or missing value for parameter '{}'").format(
param.description()),
level=Qgis.Warning)
return None
alg.addParameterSources(param.name(), val)
outputs = {}
for output in self._alg.destinationParameterDefinitions():
if not output.flags() & QgsProcessingParameterDefinition.FlagHidden:
wrapper = self.wrappers[output.name()]
if wrapper.isModelOutput():
name = wrapper.modelOutputName()
if name:
model_output = QgsProcessingModelOutput(name, name)
model_output.setChildId(alg.childId())
model_output.setChildOutputName(output.name())
outputs[name] = model_output
else:
val = wrapper.value()
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
alg.addParameterSources(output.name(), val)
if output.flags() & QgsProcessingParameterDefinition.FlagIsModelOutput:
if output.name() not in outputs:
model_output = QgsProcessingModelOutput(output.name(), output.name())
model_output.setChildId(alg.childId())
model_output.setChildOutputName(output.name())
outputs[output.name()] = model_output
alg.setModelOutputs(outputs)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies()
dep_ids = []
for selected in selectedOptions:
dep_ids.append(availableDependencies[selected].childId())
alg.setDependencies(dep_ids)
return alg
class ModelerParametersDialog(QDialog):
ENTER_NAME = '[Enter name if this is a final result]'
NOT_SELECTED = '[Not selected]'
USE_MIN_COVERING_EXTENT = '[Use min covering extent]'
def __init__(self, alg, model, algName=None):
QDialog.__init__(self)
self.setModal(True)
# The algorithm to define in this dialog. It is an instance of GeoAlgorithm
self._alg = alg
# The resulting algorithm after the user clicks on OK. it is an instance of the container Algorithm class
self.alg = None
# The model this algorithm is going to be added to
self.model = model
# The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self._algName = algName
self.setupUi()
self.params = None
def setupUi(self):
self.labels = {}
self.widgets = {}
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel
| QDialogButtonBox.Ok)
tooltips = self._alg.getParameterDescriptions()
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
for param in self._alg.parameters:
if param.isAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(
self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameters:
if param.hidden:
continue
desc = param.description
if isinstance(param, ParameterExtent):
desc += self.tr('(xmin, xmax, ymin, ymax)')
if isinstance(param, ParameterPoint):
desc += self.tr('(x, y)')
if param.optional:
desc += self.tr(' [optional]')
label = QLabel(desc)
self.labels[param.name] = label
wrapper = param.wrapper(self)
self.wrappers[param.name] = wrapper
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name] = widget
if param.name in list(tooltips.keys()):
tooltip = tooltips[param.name]
else:
tooltip = param.description
label.setToolTip(tooltip)
widget.setToolTip(tooltip)
if param.isAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.widgets[param.name] = widget
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for output in self._alg.outputs:
if output.hidden:
continue
if isinstance(output, (OutputRaster, OutputVector, OutputTable,
OutputHTML, OutputFile, OutputDirectory)):
label = QLabel(output.description + '<' +
output.__class__.__name__ + '>')
item = QLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(ModelerParametersDialog.ENTER_NAME)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[output.name] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.tabWidget = QTabWidget()
self.tabWidget.setMinimumWidth(300)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.tabWidget.addTab(self.scrollArea, self.tr('Parameters'))
self.txtHelp = QTextBrowser()
html = None
isText, algHelp = self._alg.help()
if algHelp is not None:
algHelp = algHelp if isText else QUrl(algHelp)
try:
if isText:
self.txtHelp.setHtml(algHelp)
else:
html = self.tr(
'<p>Downloading algorithm help... Please wait.</p>')
self.txtHelp.setHtml(html)
self.tabWidget.addTab(self.txtHelp, 'Help')
self.reply = QgsNetworkAccessManager.instance().get(
QNetworkRequest(algHelp))
self.reply.finished.connect(self.requestFinished)
except:
pass
self.verticalLayout2.addWidget(self.tabWidget)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
QMetaObject.connectSlotsByName(self)
for wrapper in list(self.wrappers.values()):
wrapper.postInitialize(list(self.wrappers.values()))
def requestFinished(self):
"""Change the webview HTML content"""
reply = self.sender()
if reply.error() != QNetworkReply.NoError:
html = self.tr(
'<h2>No help available for this algorithm</h2><p>{}</p>'.
format(reply.errorString()))
else:
html = str(reply.readAll())
reply.deleteLater()
self.txtHelp.setHtml(html)
def getAvailableDependencies(self): # spellok
if self._algName is None:
dependent = []
else:
dependent = self.model.getDependentAlgorithms(self._algName)
opts = []
for alg in list(self.model.algs.values()):
if alg.modeler_name not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([
alg.description for alg in self.getAvailableDependencies()
]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameters:
if param.isAdvanced:
self.labels[param.name].setVisible(self.showAdvanced)
self.widgets[param.name].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outType=None, dataType=None):
# upgrade paramType to list
if type(paramType) is not list:
paramType = [paramType]
values = []
inputs = self.model.inputs
for i in list(inputs.values()):
param = i.param
for t in paramType:
if isinstance(param, t):
if dataType is not None:
if param.datatype in dataType:
values.append(ValueFromInput(param.name))
else:
values.append(ValueFromInput(param.name))
break
if outType is None:
return values
if self._algName is None:
dependent = []
else:
dependent = self.model.getDependentAlgorithms(self._algName)
for alg in list(self.model.algs.values()):
if alg.modeler_name not in dependent:
for out in alg.algorithm.outputs:
if isinstance(out, outType):
if dataType is not None and out.datatype in dataType:
values.append(
ValueFromOutput(alg.modeler_name, out.name))
else:
values.append(
ValueFromOutput(alg.modeler_name, out.name))
return values
def resolveValueDescription(self, value):
if isinstance(value, ValueFromInput):
return self.model.inputs[value.name].param.description
else:
alg = self.model.algs[value.alg]
return self.tr("'{0}' from algorithm '{1}'").format(
alg.algorithm.getOutputFromName(value.output).description,
alg.description)
def setPreviousValues(self):
if self._algName is not None:
alg = self.model.algs[self._algName]
self.descriptionBox.setText(alg.description)
for param in alg.algorithm.parameters:
if param.hidden:
continue
if param.name in alg.params:
value = alg.params[param.name]
else:
value = param.default
self.wrappers[param.name].setValue(value)
for name, out in list(alg.outputs.items()):
self.valueItems[name].setText(out.description)
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.name in alg.dependencies:
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = Algorithm(self._alg.id())
alg.setName(self.model)
alg.description = self.descriptionBox.text()
params = self._alg.parameters
outputs = self._alg.outputs
for param in params:
if param.hidden:
continue
if not self.setParamValue(alg, param, self.wrappers[param.name]):
self.bar.pushMessage(
"Error",
"Wrong or missing value for parameter '%s'" %
param.description,
level=QgsMessageBar.WARNING)
return None
for output in outputs:
if not output.hidden:
name = str(self.valueItems[output.name].text())
if name.strip(
) != '' and name != ModelerParametersDialog.ENTER_NAME:
alg.outputs[output.name] = ModelerOutput(name)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
for selected in selectedOptions:
alg.dependencies.append(
availableDependencies[selected].name) # spellok
self._alg.processBeforeAddingToModeler(alg, self.model)
return alg
def setParamValue(self, alg, param, wrapper):
try:
if wrapper.widget:
value = wrapper.value()
alg.params[param.name] = value
return True
except InvalidParameterValue:
return False
def okPressed(self):
self.alg = self.createAlgorithm()
if self.alg is not None:
self.close()
def cancelPressed(self):
self.alg = None
self.close()
class ModelerParametersDialog(QDialog):
ENTER_NAME = '[Enter name if this is a final result]'
NOT_SELECTED = '[Not selected]'
USE_MIN_COVERING_EXTENT = '[Use min covering extent]'
def __init__(self, alg, model, algName=None):
QDialog.__init__(self)
self.setModal(True)
# The algorithm to define in this dialog. It is an instance of GeoAlgorithm
self._alg = alg
# The resulting algorithm after the user clicks on OK. it is an instance of the container Algorithm class
self.alg = None
# The model this algorithm is going to be added to
self.model = model
# The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.childId = algName
self.setupUi()
self.params = None
settings = QgsSettings()
self.restoreGeometry(
settings.value("/Processing/modelParametersDialogGeometry",
QByteArray()))
def closeEvent(self, event):
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDialogGeometry",
self.saveGeometry())
super(ModelerParametersDialog, self).closeEvent(event)
def setupUi(self):
self.labels = {}
self.widgets = {}
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel
| QDialogButtonBox.Ok
| QDialogButtonBox.Help)
self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(
self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination(
) or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
desc = param.description()
if isinstance(param, QgsProcessingParameterExtent):
desc += self.tr('(xmin, xmax, ymin, ymax)')
if isinstance(param, QgsProcessingParameterPoint):
desc += self.tr('(x, y)')
if param.flags() & QgsProcessingParameterDefinition.FlagOptional:
desc += self.tr(' [optional]')
label = QLabel(desc)
self.labels[param.name()] = label
wrapper = WidgetWrapperFactory.create_wrapper(param, self)
self.wrappers[param.name()] = wrapper
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name()] = widget
tooltip = param.description()
label.setToolTip(tooltip)
widget.setToolTip(tooltip)
if param.flags(
) & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.widgets[param.name()] = widget
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for dest in self._alg.destinationParameterDefinitions():
if dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if isinstance(dest, (QgsProcessingParameterRasterDestination,
QgsProcessingParameterFeatureSink,
QgsProcessingParameterFileDestination,
QgsProcessingParameterFolderDestination)):
label = QLabel(dest.description())
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(ModelerParametersDialog.ENTER_NAME)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[dest.name()] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.verticalLayout2.addWidget(self.scrollArea)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
self.buttonBox.helpRequested.connect(self.openHelp)
QMetaObject.connectSlotsByName(self)
for wrapper in list(self.wrappers.values()):
wrapper.postInitialize(list(self.wrappers.values()))
def getAvailableDependencies(self): # spellok
if self.childId is None:
dependent = []
else:
dependent = list(self.model.dependentChildAlgorithms(self.childId))
dependent.append(self.childId)
opts = []
for alg in list(self.model.childAlgorithms().values()):
if alg.childId() not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([
alg.description() for alg in self.getAvailableDependencies()
]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.labels[param.name()].setVisible(self.showAdvanced)
self.widgets[param.name()].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outTypes=[], dataTypes=[]):
# upgrade paramType to list
if paramType is None:
paramType = []
elif not isinstance(paramType, list):
paramType = [paramType]
if outTypes is None:
outTypes = []
elif not isinstance(outTypes, list):
outTypes = [outTypes]
return self.model.availableSourcesForChild(self.childId, [
p.typeName() for p in paramType
if issubclass(p, QgsProcessingParameterDefinition)
], [
o.typeName()
for o in outTypes if issubclass(o, QgsProcessingOutputDefinition)
], dataTypes)
def resolveValueDescription(self, value):
if isinstance(value, QgsProcessingModelChildParameterSource):
if value.source(
) == QgsProcessingModelChildParameterSource.StaticValue:
return value.staticValue()
elif value.source(
) == QgsProcessingModelChildParameterSource.ModelParameter:
return self.model.parameterDefinition(
value.parameterName()).description()
elif value.source(
) == QgsProcessingModelChildParameterSource.ChildOutput:
alg = self.model.childAlgorithm(value.outputChildId())
return self.tr("'{0}' from algorithm '{1}'").format(
alg.algorithm().outputDefinition(
value.outputName()).description(), alg.description())
return value
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags(
) & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
if value is None:
value = param.defaultValue()
if isinstance(
value, QgsProcessingModelChildParameterSource
) and value.source(
) == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
self.wrappers[param.name()].setValue(value)
for name, out in list(alg.modelOutputs().items()):
if out.childOutputName() in self.valueItems:
self.valueItems[out.childOutputName()].setText(out.name())
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.childId() in alg.dependencies():
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
for param in self._alg.parameterDefinitions():
if param.isDestination(
) or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
val = self.wrappers[param.name()].value()
if (isinstance(val,
QgsProcessingModelChildParameterSource) and val.source() == QgsProcessingModelChildParameterSource.StaticValue and not param.checkValueIsAcceptable(
val.staticValue())) \
or (val is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.bar.pushMessage(
"Error",
"Wrong or missing value for parameter '%s'" %
param.description(),
level=QgsMessageBar.WARNING)
return None
if val is None:
continue
elif isinstance(val, QgsProcessingModelChildParameterSource):
alg.addParameterSources(param.name(), [val])
elif isinstance(val, list):
alg.addParameterSources(param.name(), val)
else:
alg.addParameterSources(param.name(), [
QgsProcessingModelChildParameterSource.fromStaticValue(val)
])
outputs = {}
for dest in self._alg.destinationParameterDefinitions():
if not dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
name = str(self.valueItems[dest.name()].text())
if name.strip(
) != '' and name != ModelerParametersDialog.ENTER_NAME:
output = QgsProcessingModelOutput(name, name)
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[name] = output
alg.setModelOutputs(outputs)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
dep_ids = []
for selected in selectedOptions:
dep_ids.append(
availableDependencies[selected].childId()) # spellok
alg.setDependencies(dep_ids)
try:
self._alg.processBeforeAddingToModeler(alg, self.model)
except:
pass
return alg
def okPressed(self):
self.alg = self.createAlgorithm()
if self.alg is not None:
self.close()
def cancelPressed(self):
self.alg = None
self.close()
def openHelp(self):
algHelp = self._alg.help()
if algHelp is not None:
webbrowser.open(algHelp)
class ModelerDialog(BASE, WIDGET):
ALG_ITEM = 'ALG_ITEM'
PROVIDER_ITEM = 'PROVIDER_ITEM'
GROUP_ITEM = 'GROUP_ITEM'
NAME_ROLE = Qt.UserRole
TAG_ROLE = Qt.UserRole + 1
TYPE_ROLE = Qt.UserRole + 2
CANVAS_SIZE = 4000
update_model = pyqtSignal()
def __init__(self, model=None):
super().__init__(None)
self.setAttribute(Qt.WA_DeleteOnClose)
self.setupUi(self)
# LOTS of bug reports when we include the dock creation in the UI file
# see e.g. #16428, #19068
# So just roll it all by hand......!
self.propertiesDock = QgsDockWidget(self)
self.propertiesDock.setFeatures(
QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.propertiesDock.setObjectName("propertiesDock")
propertiesDockContents = QWidget()
self.verticalDockLayout_1 = QVBoxLayout(propertiesDockContents)
self.verticalDockLayout_1.setContentsMargins(0, 0, 0, 0)
self.verticalDockLayout_1.setSpacing(0)
self.scrollArea_1 = QgsScrollArea(propertiesDockContents)
sizePolicy = QSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.MinimumExpanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.scrollArea_1.sizePolicy().hasHeightForWidth())
self.scrollArea_1.setSizePolicy(sizePolicy)
self.scrollArea_1.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_1.setFrameShape(QFrame.NoFrame)
self.scrollArea_1.setFrameShadow(QFrame.Plain)
self.scrollArea_1.setWidgetResizable(True)
self.scrollAreaWidgetContents_1 = QWidget()
self.gridLayout = QGridLayout(self.scrollAreaWidgetContents_1)
self.gridLayout.setContentsMargins(6, 6, 6, 6)
self.gridLayout.setSpacing(4)
self.label_1 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_1, 0, 0, 1, 1)
self.textName = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textName, 0, 1, 1, 1)
self.label_2 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
self.textGroup = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textGroup, 1, 1, 1, 1)
self.label_1.setText(self.tr("Name"))
self.textName.setToolTip(self.tr("Enter model name here"))
self.label_2.setText(self.tr("Group"))
self.textGroup.setToolTip(self.tr("Enter group name here"))
self.scrollArea_1.setWidget(self.scrollAreaWidgetContents_1)
self.verticalDockLayout_1.addWidget(self.scrollArea_1)
self.propertiesDock.setWidget(propertiesDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.propertiesDock)
self.propertiesDock.setWindowTitle(self.tr("Model properties"))
self.inputsDock = QgsDockWidget(self)
self.inputsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.inputsDock.setObjectName("inputsDock")
self.inputsDockContents = QWidget()
self.verticalLayout_3 = QVBoxLayout(self.inputsDockContents)
self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
self.scrollArea_2 = QgsScrollArea(self.inputsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_2.sizePolicy().hasHeightForWidth())
self.scrollArea_2.setSizePolicy(sizePolicy)
self.scrollArea_2.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_2.setFrameShape(QFrame.NoFrame)
self.scrollArea_2.setFrameShadow(QFrame.Plain)
self.scrollArea_2.setWidgetResizable(True)
self.scrollAreaWidgetContents_2 = QWidget()
self.verticalLayout = QVBoxLayout(self.scrollAreaWidgetContents_2)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setSpacing(0)
self.inputsTree = QTreeWidget(self.scrollAreaWidgetContents_2)
self.inputsTree.setAlternatingRowColors(True)
self.inputsTree.header().setVisible(False)
self.verticalLayout.addWidget(self.inputsTree)
self.scrollArea_2.setWidget(self.scrollAreaWidgetContents_2)
self.verticalLayout_3.addWidget(self.scrollArea_2)
self.inputsDock.setWidget(self.inputsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.inputsDock)
self.inputsDock.setWindowTitle(self.tr("Inputs"))
self.algorithmsDock = QgsDockWidget(self)
self.algorithmsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.algorithmsDock.setObjectName("algorithmsDock")
self.algorithmsDockContents = QWidget()
self.verticalLayout_4 = QVBoxLayout(self.algorithmsDockContents)
self.verticalLayout_4.setContentsMargins(0, 0, 0, 0)
self.scrollArea_3 = QgsScrollArea(self.algorithmsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_3.sizePolicy().hasHeightForWidth())
self.scrollArea_3.setSizePolicy(sizePolicy)
self.scrollArea_3.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_3.setFrameShape(QFrame.NoFrame)
self.scrollArea_3.setFrameShadow(QFrame.Plain)
self.scrollArea_3.setWidgetResizable(True)
self.scrollAreaWidgetContents_3 = QWidget()
self.verticalLayout_2 = QVBoxLayout(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.setContentsMargins(0, 0, 0, 0)
self.verticalLayout_2.setSpacing(4)
self.searchBox = QgsFilterLineEdit(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.addWidget(self.searchBox)
self.algorithmTree = QgsProcessingToolboxTreeView(None,
QgsApplication.processingRegistry())
self.algorithmTree.setAlternatingRowColors(True)
self.algorithmTree.header().setVisible(False)
self.verticalLayout_2.addWidget(self.algorithmTree)
self.scrollArea_3.setWidget(self.scrollAreaWidgetContents_3)
self.verticalLayout_4.addWidget(self.scrollArea_3)
self.algorithmsDock.setWidget(self.algorithmsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.algorithmsDock)
self.algorithmsDock.setWindowTitle(self.tr("Algorithms"))
self.searchBox.setToolTip(self.tr("Enter algorithm name to filter list"))
self.searchBox.setShowSearchIcon(True)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.centralWidget().layout().insertWidget(0, self.bar)
try:
self.setDockOptions(self.dockOptions() | QMainWindow.GroupedDragging)
except:
pass
if iface is not None:
self.mToolbar.setIconSize(iface.iconSize())
self.setStyleSheet(iface.mainWindow().styleSheet())
self.mActionOpen.setIcon(
QgsApplication.getThemeIcon('/mActionFileOpen.svg'))
self.mActionSave.setIcon(
QgsApplication.getThemeIcon('/mActionFileSave.svg'))
self.mActionSaveAs.setIcon(
QgsApplication.getThemeIcon('/mActionFileSaveAs.svg'))
self.mActionSaveInProject.setIcon(
QgsApplication.getThemeIcon('/mAddToProject.svg'))
self.mActionZoomActual.setIcon(
QgsApplication.getThemeIcon('/mActionZoomActual.svg'))
self.mActionZoomIn.setIcon(
QgsApplication.getThemeIcon('/mActionZoomIn.svg'))
self.mActionZoomOut.setIcon(
QgsApplication.getThemeIcon('/mActionZoomOut.svg'))
self.mActionExportImage.setIcon(
QgsApplication.getThemeIcon('/mActionSaveMapAsImage.svg'))
self.mActionZoomToItems.setIcon(
QgsApplication.getThemeIcon('/mActionZoomFullExtent.svg'))
self.mActionExportPdf.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsPDF.svg'))
self.mActionExportSvg.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsSVG.svg'))
#self.mActionExportPython.setIcon(
# QgsApplication.getThemeIcon('/mActionSaveAsPython.svg'))
self.mActionEditHelp.setIcon(
QgsApplication.getThemeIcon('/mActionEditHelpContent.svg'))
self.mActionRun.setIcon(
QgsApplication.getThemeIcon('/mActionStart.svg'))
self.addDockWidget(Qt.LeftDockWidgetArea, self.propertiesDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.inputsDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.algorithmsDock)
self.tabifyDockWidget(self.inputsDock, self.algorithmsDock)
self.inputsDock.raise_()
self.zoom = 1
self.setWindowFlags(Qt.WindowMinimizeButtonHint |
Qt.WindowMaximizeButtonHint |
Qt.WindowCloseButtonHint)
settings = QgsSettings()
self.restoreState(settings.value("/Processing/stateModeler", QByteArray()))
self.restoreGeometry(settings.value("/Processing/geometryModeler", QByteArray()))
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE, self.CANVAS_SIZE))
self.view.setScene(self.scene)
self.view.setAcceptDrops(True)
self.view.ensureVisible(0, 0, 10, 10)
def _dragEnterEvent(event):
if event.mimeData().hasText() or event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
event.acceptProposedAction()
else:
event.ignore()
def _dropEvent(event):
if event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
data = event.mimeData().data('application/x-vnd.qgis.qgis.algorithmid')
stream = QDataStream(data, QIODevice.ReadOnly)
algorithm_id = stream.readQString()
alg = QgsApplication.processingRegistry().createAlgorithmById(algorithm_id)
if alg is not None:
self._addAlgorithm(alg, event.pos())
else:
assert False, algorithm_id
elif event.mimeData().hasText():
itemId = event.mimeData().text()
if itemId in [param.id() for param in QgsApplication.instance().processingRegistry().parameterTypes()]:
self.addInputOfType(itemId, event.pos())
event.accept()
else:
event.ignore()
def _dragMoveEvent(event):
if event.mimeData().hasText() or event.mimeData().hasFormat('application/x-vnd.qgis.qgis.algorithmid'):
event.accept()
else:
event.ignore()
def _wheelEvent(event):
self.view.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
# "Normal" mouse has an angle delta of 120, precision mouses provide data
# faster, in smaller steps
factor = 1.0 + (factor - 1.0) / 120.0 * abs(event.angleDelta().y())
if (event.modifiers() == Qt.ControlModifier):
factor = 1.0 + (factor - 1.0) / 20.0
if event.angleDelta().y() < 0:
factor = 1 / factor
self.view.scale(factor, factor)
def _enterEvent(e):
QGraphicsView.enterEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mouseReleaseEvent(e):
QGraphicsView.mouseReleaseEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mousePressEvent(e):
if e.button() == Qt.MidButton:
self.previousMousePos = e.pos()
else:
QGraphicsView.mousePressEvent(self.view, e)
def _mouseMoveEvent(e):
if e.buttons() == Qt.MidButton:
offset = self.previousMousePos - e.pos()
self.previousMousePos = e.pos()
self.view.verticalScrollBar().setValue(self.view.verticalScrollBar().value() + offset.y())
self.view.horizontalScrollBar().setValue(self.view.horizontalScrollBar().value() + offset.x())
else:
QGraphicsView.mouseMoveEvent(self.view, e)
self.view.setDragMode(QGraphicsView.ScrollHandDrag)
self.view.dragEnterEvent = _dragEnterEvent
self.view.dropEvent = _dropEvent
self.view.dragMoveEvent = _dragMoveEvent
self.view.wheelEvent = _wheelEvent
self.view.enterEvent = _enterEvent
self.view.mousePressEvent = _mousePressEvent
self.view.mouseMoveEvent = _mouseMoveEvent
def _mimeDataInput(items):
mimeData = QMimeData()
text = items[0].data(0, Qt.UserRole)
mimeData.setText(text)
return mimeData
self.inputsTree.mimeData = _mimeDataInput
self.inputsTree.setDragDropMode(QTreeWidget.DragOnly)
self.inputsTree.setDropIndicatorShown(True)
self.algorithms_model = ModelerToolboxModel(self, QgsApplication.processingRegistry())
self.algorithmTree.setToolboxProxyModel(self.algorithms_model)
self.algorithmTree.setDragDropMode(QTreeWidget.DragOnly)
self.algorithmTree.setDropIndicatorShown(True)
self.algorithmTree.setFilters(QgsProcessingToolboxProxyModel.FilterModeler)
if hasattr(self.searchBox, 'setPlaceholderText'):
self.searchBox.setPlaceholderText(QCoreApplication.translate('ModelerDialog', 'Search…'))
if hasattr(self.textName, 'setPlaceholderText'):
self.textName.setPlaceholderText(self.tr('Enter model name here'))
if hasattr(self.textGroup, 'setPlaceholderText'):
self.textGroup.setPlaceholderText(self.tr('Enter group name here'))
# Connect signals and slots
self.inputsTree.doubleClicked.connect(self.addInput)
self.searchBox.textChanged.connect(self.algorithmTree.setFilterString)
self.algorithmTree.doubleClicked.connect(self.addAlgorithm)
# Ctrl+= should also trigger a zoom in action
ctrlEquals = QShortcut(QKeySequence("Ctrl+="), self)
ctrlEquals.activated.connect(self.zoomIn)
self.mActionOpen.triggered.connect(self.openModel)
self.mActionSave.triggered.connect(self.save)
self.mActionSaveAs.triggered.connect(self.saveAs)
self.mActionSaveInProject.triggered.connect(self.saveInProject)
self.mActionZoomIn.triggered.connect(self.zoomIn)
self.mActionZoomOut.triggered.connect(self.zoomOut)
self.mActionZoomActual.triggered.connect(self.zoomActual)
self.mActionZoomToItems.triggered.connect(self.zoomToItems)
self.mActionExportImage.triggered.connect(self.exportAsImage)
self.mActionExportPdf.triggered.connect(self.exportAsPdf)
self.mActionExportSvg.triggered.connect(self.exportAsSvg)
#self.mActionExportPython.triggered.connect(self.exportAsPython)
self.mActionEditHelp.triggered.connect(self.editHelp)
self.mActionRun.triggered.connect(self.runModel)
if model is not None:
self.model = model.create()
self.model.setSourceFilePath(model.sourceFilePath())
self.textGroup.setText(self.model.group())
self.textName.setText(self.model.displayName())
self.repaintModel()
else:
self.model = QgsProcessingModelAlgorithm()
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.fillInputsTree()
self.view.centerOn(0, 0)
self.help = None
self.hasChanged = False
def closeEvent(self, evt):
settings = QgsSettings()
settings.setValue("/Processing/stateModeler", self.saveState())
settings.setValue("/Processing/geometryModeler", self.saveGeometry())
if self.hasChanged:
ret = QMessageBox.question(
self, self.tr('Save Model?'),
self.tr('There are unsaved changes in this model. Do you want to keep those?'),
QMessageBox.Save | QMessageBox.Cancel | QMessageBox.Discard, QMessageBox.Cancel)
if ret == QMessageBox.Save:
self.saveModel(False)
evt.accept()
elif ret == QMessageBox.Discard:
evt.accept()
else:
evt.ignore()
else:
evt.accept()
def editHelp(self):
alg = self.model
dlg = HelpEditionDialog(alg)
dlg.exec_()
if dlg.descriptions:
self.model.setHelpContent(dlg.descriptions)
self.hasChanged = True
def runModel(self):
if len(self.model.childAlgorithms()) == 0:
self.bar.pushMessage("", self.tr("Model doesn't contain any algorithm and/or parameter and can't be executed"), level=Qgis.Warning, duration=5)
return
dlg = AlgorithmDialog(self.model)
dlg.exec_()
def save(self):
self.saveModel(False)
def saveAs(self):
self.saveModel(True)
def saveInProject(self):
if not self.can_save():
return
self.model.setName(str(self.textName.text()))
self.model.setGroup(str(self.textGroup.text()))
self.model.setSourceFilePath(None)
project_provider = QgsApplication.processingRegistry().providerById(PROJECT_PROVIDER_ID)
project_provider.add_model(self.model)
self.update_model.emit()
self.bar.pushMessage("", self.tr("Model was saved inside current project"), level=Qgis.Success, duration=5)
self.hasChanged = False
QgsProject.instance().setDirty(True)
def zoomIn(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomOut(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
factor = 1 / factor
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomActual(self):
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
self.view.resetTransform()
self.view.centerOn(point)
def zoomToItems(self):
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
self.view.fitInView(totalRect, Qt.KeepAspectRatio)
def exportAsImage(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)'))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
imgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, imgRect, totalRect)
painter.end()
img.save(filename)
self.bar.pushMessage("", self.tr("Successfully exported model as image to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPdf(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As PDF'), '',
self.tr('PDF files (*.pdf *.PDF)'))
if not filename:
return
if not filename.lower().endswith('.pdf'):
filename += '.pdf'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
printerRect = QRectF(0, 0, totalRect.width(), totalRect.height())
printer = QPrinter()
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(filename)
printer.setPaperSize(QSizeF(printerRect.width(), printerRect.height()), QPrinter.DevicePixel)
printer.setFullPage(True)
painter = QPainter(printer)
self.scene.render(painter, printerRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Successfully exported model as PDF to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsSvg(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As SVG'), '',
self.tr('SVG files (*.svg *.SVG)'))
if not filename:
return
if not filename.lower().endswith('.svg'):
filename += '.svg'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
svgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
svg = QSvgGenerator()
svg.setFileName(filename)
svg.setSize(QSize(totalRect.width(), totalRect.height()))
svg.setViewBox(svgRect)
svg.setTitle(self.model.displayName())
painter = QPainter(svg)
self.scene.render(painter, svgRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Successfully exported model as SVG to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPython(self):
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Python Script'), '',
self.tr('Processing scripts (*.py *.PY)'))
if not filename:
return
if not filename.lower().endswith('.py'):
filename += '.py'
text = self.model.asPythonCode()
with codecs.open(filename, 'w', encoding='utf-8') as fout:
fout.write(text)
self.bar.pushMessage("", self.tr("Successfully exported model as python script to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
def can_save(self):
"""
Tests whether a model can be saved, or if it is not yet valid
:return: bool
"""
if str(self.textName.text()).strip() == '':
self.bar.pushWarning(
"", self.tr('Please a enter model name before saving')
)
return False
return True
def saveModel(self, saveAs):
if not self.can_save():
return
self.model.setName(str(self.textName.text()))
self.model.setGroup(str(self.textGroup.text()))
if self.model.sourceFilePath() and not saveAs:
filename = self.model.sourceFilePath()
else:
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3 *.MODEL3)'))
if filename:
if not filename.endswith('.model3'):
filename += '.model3'
self.model.setSourceFilePath(filename)
if filename:
if not self.model.toFile(filename):
if saveAs:
QMessageBox.warning(self, self.tr('I/O error'),
self.tr('Unable to save edits. Reason:\n {0}').format(str(sys.exc_info()[1])))
else:
QMessageBox.warning(self, self.tr("Can't save model"), QCoreApplication.translate('QgsPluginInstallerInstallingDialog', (
"This model can't be saved in its original location (probably you do not "
"have permission to do it). Please, use the 'Save as…' option."))
)
return
self.update_model.emit()
if saveAs:
self.bar.pushMessage("", self.tr("Model was correctly saved to <a href=\"{}\">{}</a>").format(QUrl.fromLocalFile(filename).toString(), QDir.toNativeSeparators(filename)), level=Qgis.Success, duration=5)
else:
self.bar.pushMessage("", self.tr("Model was correctly saved"), level=Qgis.Success, duration=5)
self.hasChanged = False
def openModel(self):
filename, selected_filter = QFileDialog.getOpenFileName(self,
self.tr('Open Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3 *.MODEL3)'))
if filename:
self.loadModel(filename)
def loadModel(self, filename):
alg = QgsProcessingModelAlgorithm()
if alg.fromFile(filename):
self.model = alg
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.textGroup.setText(alg.group())
self.textName.setText(alg.name())
self.repaintModel()
self.view.centerOn(0, 0)
self.hasChanged = False
else:
QgsMessageLog.logMessage(self.tr('Could not load model {0}').format(filename),
self.tr('Processing'),
Qgis.Critical)
QMessageBox.critical(self, self.tr('Open Model'),
self.tr('The selected model could not be loaded.\n'
'See the log for more information.'))
def repaintModel(self, controls=True):
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE,
self.CANVAS_SIZE))
self.scene.paintModel(self.model, controls)
self.view.setScene(self.scene)
def addInput(self):
item = self.inputsTree.currentItem()
param = item.data(0, Qt.UserRole)
self.addInputOfType(param)
def addInputOfType(self, paramType, pos=None):
dlg = ModelerParameterDefinitionDialog(self.model, paramType)
dlg.exec_()
if dlg.param is not None:
if pos is None:
pos = self.getPositionForParameterItem()
if isinstance(pos, QPoint):
pos = QPointF(pos)
component = QgsProcessingModelParameter(dlg.param.name())
component.setDescription(dlg.param.name())
component.setPosition(pos)
self.model.addModelParameter(dlg.param, component)
self.repaintModel()
# self.view.ensureVisible(self.scene.getLastParameterItem())
self.hasChanged = True
def getPositionForParameterItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if len(self.model.parameterComponents()) > 0:
maxX = max([i.position().x() for i in list(self.model.parameterComponents().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
else:
newX = MARGIN + BOX_WIDTH / 2
return QPointF(newX, MARGIN + BOX_HEIGHT / 2)
def fillInputsTree(self):
icon = QIcon(os.path.join(pluginPath, 'images', 'input.svg'))
parametersItem = QTreeWidgetItem()
parametersItem.setText(0, self.tr('Parameters'))
sortedParams = sorted(QgsApplication.instance().processingRegistry().parameterTypes(), key=lambda pt: pt.name())
for param in sortedParams:
if param.flags() & QgsProcessingParameterType.ExposeToModeler:
paramItem = QTreeWidgetItem()
paramItem.setText(0, param.name())
paramItem.setData(0, Qt.UserRole, param.id())
paramItem.setIcon(0, icon)
paramItem.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsDragEnabled)
paramItem.setToolTip(0, param.description())
parametersItem.addChild(paramItem)
self.inputsTree.addTopLevelItem(parametersItem)
parametersItem.setExpanded(True)
def addAlgorithm(self):
algorithm = self.algorithmTree.selectedAlgorithm()
if algorithm is not None:
alg = QgsApplication.processingRegistry().createAlgorithmById(algorithm.id())
self._addAlgorithm(alg)
def _addAlgorithm(self, alg, pos=None):
dlg = ModelerParametersDialog(alg, self.model)
if dlg.exec_():
alg = dlg.createAlgorithm()
if pos is None:
alg.setPosition(self.getPositionForAlgorithmItem())
else:
alg.setPosition(pos)
from processing.modeler.ModelerGraphicItem import ModelerGraphicItem
for i, out in enumerate(alg.modelOutputs()):
alg.modelOutput(out).setPosition(alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, (i + 1.5) *
ModelerGraphicItem.BOX_HEIGHT))
self.model.addChildAlgorithm(alg)
self.repaintModel()
self.hasChanged = True
def getPositionForAlgorithmItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if self.model.childAlgorithms():
maxX = max([alg.position().x() for alg in list(self.model.childAlgorithms().values())])
maxY = max([alg.position().y() for alg in list(self.model.childAlgorithms().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
newY = min(MARGIN + BOX_HEIGHT + maxY, self.CANVAS_SIZE -
BOX_HEIGHT)
else:
newX = MARGIN + BOX_WIDTH / 2
newY = MARGIN * 2 + BOX_HEIGHT + BOX_HEIGHT / 2
return QPointF(newX, newY)
class ModelerParametersDialog(QDialog):
ENTER_NAME = '[Enter name if this is a final result]'
NOT_SELECTED = '[Not selected]'
USE_MIN_COVERING_EXTENT = '[Use min covering extent]'
def __init__(self, alg, model, algName=None):
QDialog.__init__(self)
self.setModal(True)
# The algorithm to define in this dialog. It is an instance of GeoAlgorithm
self._alg = alg
# The resulting algorithm after the user clicks on OK. it is an instance of the container Algorithm class
self.alg = None
# The model this algorithm is going to be added to
self.model = model
# The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.childId = algName
self.setupUi()
self.params = None
settings = QgsSettings()
self.restoreGeometry(settings.value("/Processing/modelParametersDialogGeometry", QByteArray()))
def closeEvent(self, event):
settings = QgsSettings()
settings.setValue("/Processing/modelParametersDialogGeometry", self.saveGeometry())
super(ModelerParametersDialog, self).closeEvent(event)
def setupUi(self):
self.labels = {}
self.widgets = {}
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel | QDialogButtonBox.Ok | QDialogButtonBox.Help)
self.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
desc = param.description()
if isinstance(param, QgsProcessingParameterExtent):
desc += self.tr('(xmin, xmax, ymin, ymax)')
if isinstance(param, QgsProcessingParameterPoint):
desc += self.tr('(x, y)')
if param.flags() & QgsProcessingParameterDefinition.FlagOptional:
desc += self.tr(' [optional]')
label = QLabel(desc)
self.labels[param.name()] = label
wrapper = WidgetWrapperFactory.create_wrapper(param, self)
self.wrappers[param.name()] = wrapper
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name()] = widget
tooltip = param.description()
label.setToolTip(tooltip)
widget.setToolTip(tooltip)
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.widgets[param.name()] = widget
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for dest in self._alg.destinationParameterDefinitions():
if dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if isinstance(dest, (QgsProcessingParameterRasterDestination, QgsProcessingParameterFeatureSink,
QgsProcessingParameterFileDestination, QgsProcessingParameterFolderDestination)):
label = QLabel(dest.description())
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(ModelerParametersDialog.ENTER_NAME)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[dest.name()] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.verticalLayout2.addWidget(self.scrollArea)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
self.buttonBox.helpRequested.connect(self.openHelp)
QMetaObject.connectSlotsByName(self)
for wrapper in list(self.wrappers.values()):
wrapper.postInitialize(list(self.wrappers.values()))
def getAvailableDependencies(self): # spellok
if self.childId is None:
dependent = []
else:
dependent = list(self.model.dependentChildAlgorithms(self.childId))
dependent.append(self.childId)
opts = []
for alg in list(self.model.childAlgorithms().values()):
if alg.childId() not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([alg.description() for alg in self.getAvailableDependencies()]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.labels[param.name()].setVisible(self.showAdvanced)
self.widgets[param.name()].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outTypes=[], dataTypes=[]):
# upgrade paramType to list
if paramType is None:
paramType = []
elif not isinstance(paramType, list):
paramType = [paramType]
if outTypes is None:
outTypes = []
elif not isinstance(outTypes, list):
outTypes = [outTypes]
return self.model.availableSourcesForChild(self.childId, [p.typeName() for p in paramType if issubclass(p, QgsProcessingParameterDefinition)],
[o.typeName() for o in outTypes if issubclass(o, QgsProcessingOutputDefinition)], dataTypes)
def resolveValueDescription(self, value):
if isinstance(value, QgsProcessingModelChildParameterSource):
if value.source() == QgsProcessingModelChildParameterSource.StaticValue:
return value.staticValue()
elif value.source() == QgsProcessingModelChildParameterSource.ModelParameter:
return self.model.parameterDefinition(value.parameterName()).description()
elif value.source() == QgsProcessingModelChildParameterSource.ChildOutput:
alg = self.model.childAlgorithm(value.outputChildId())
return self.tr("'{0}' from algorithm '{1}'").format(
alg.algorithm().outputDefinition(value.outputName()).description(), alg.description())
return value
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
if value is None:
value = param.defaultValue()
if isinstance(value, QgsProcessingModelChildParameterSource) and value.source() == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
self.wrappers[param.name()].setValue(value)
for name, out in list(alg.modelOutputs().items()):
if out.childOutputName() in self.valueItems:
self.valueItems[out.childOutputName()].setText(out.name())
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.childId() in alg.dependencies():
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
val = self.wrappers[param.name()].value()
if (isinstance(val,
QgsProcessingModelChildParameterSource) and val.source() == QgsProcessingModelChildParameterSource.StaticValue and not param.checkValueIsAcceptable(
val.staticValue())) \
or (val is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
self.bar.pushMessage("Error", "Wrong or missing value for parameter '%s'" % param.description(),
level=QgsMessageBar.WARNING)
return None
if val is None:
continue
elif isinstance(val, QgsProcessingModelChildParameterSource):
alg.addParameterSources(param.name(), [val])
elif isinstance(val, list):
alg.addParameterSources(param.name(), val)
else:
alg.addParameterSources(param.name(), [QgsProcessingModelChildParameterSource.fromStaticValue(val)])
outputs = {}
for dest in self._alg.destinationParameterDefinitions():
if not dest.flags() & QgsProcessingParameterDefinition.FlagHidden:
name = str(self.valueItems[dest.name()].text())
if name.strip() != '' and name != ModelerParametersDialog.ENTER_NAME:
output = QgsProcessingModelOutput(name, name)
output.setChildId(alg.childId())
output.setChildOutputName(dest.name())
outputs[name] = output
alg.setModelOutputs(outputs)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
dep_ids = []
for selected in selectedOptions:
dep_ids.append(availableDependencies[selected].childId()) # spellok
alg.setDependencies(dep_ids)
try:
self._alg.processBeforeAddingToModeler(alg, self.model)
except:
pass
return alg
def okPressed(self):
self.alg = self.createAlgorithm()
if self.alg is not None:
self.close()
def cancelPressed(self):
self.alg = None
self.close()
def openHelp(self):
algHelp = self._alg.help()
if algHelp is not None:
webbrowser.open(algHelp)
class ModelerDialog(BASE, WIDGET):
ALG_ITEM = 'ALG_ITEM'
PROVIDER_ITEM = 'PROVIDER_ITEM'
GROUP_ITEM = 'GROUP_ITEM'
NAME_ROLE = Qt.UserRole
TAG_ROLE = Qt.UserRole + 1
TYPE_ROLE = Qt.UserRole + 2
CANVAS_SIZE = 4000
update_model = pyqtSignal()
def __init__(self, model=None):
super().__init__(None)
self.setAttribute(Qt.WA_DeleteOnClose)
self.setupUi(self)
# LOTS of bug reports when we include the dock creation in the UI file
# see e.g. #16428, #19068
# So just roll it all by hand......!
self.propertiesDock = QgsDockWidget(self)
self.propertiesDock.setFeatures(
QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.propertiesDock.setObjectName("propertiesDock")
propertiesDockContents = QWidget()
self.verticalDockLayout_1 = QVBoxLayout(propertiesDockContents)
self.verticalDockLayout_1.setContentsMargins(0, 0, 0, 0)
self.verticalDockLayout_1.setSpacing(0)
self.scrollArea_1 = QgsScrollArea(propertiesDockContents)
sizePolicy = QSizePolicy(QSizePolicy.MinimumExpanding,
QSizePolicy.MinimumExpanding)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.scrollArea_1.sizePolicy().hasHeightForWidth())
self.scrollArea_1.setSizePolicy(sizePolicy)
self.scrollArea_1.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_1.setFrameShape(QFrame.NoFrame)
self.scrollArea_1.setFrameShadow(QFrame.Plain)
self.scrollArea_1.setWidgetResizable(True)
self.scrollAreaWidgetContents_1 = QWidget()
self.gridLayout = QGridLayout(self.scrollAreaWidgetContents_1)
self.gridLayout.setContentsMargins(6, 6, 6, 6)
self.gridLayout.setSpacing(4)
self.label_1 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_1, 0, 0, 1, 1)
self.textName = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textName, 0, 1, 1, 1)
self.label_2 = QLabel(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.label_2, 1, 0, 1, 1)
self.textGroup = QLineEdit(self.scrollAreaWidgetContents_1)
self.gridLayout.addWidget(self.textGroup, 1, 1, 1, 1)
self.label_1.setText(self.tr("Name"))
self.textName.setToolTip(self.tr("Enter model name here"))
self.label_2.setText(self.tr("Group"))
self.textGroup.setToolTip(self.tr("Enter group name here"))
self.scrollArea_1.setWidget(self.scrollAreaWidgetContents_1)
self.verticalDockLayout_1.addWidget(self.scrollArea_1)
self.propertiesDock.setWidget(propertiesDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.propertiesDock)
self.propertiesDock.setWindowTitle(self.tr("Model properties"))
self.inputsDock = QgsDockWidget(self)
self.inputsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.inputsDock.setObjectName("inputsDock")
self.inputsDockContents = QWidget()
self.verticalLayout_3 = QVBoxLayout(self.inputsDockContents)
self.verticalLayout_3.setContentsMargins(0, 0, 0, 0)
self.scrollArea_2 = QgsScrollArea(self.inputsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_2.sizePolicy().hasHeightForWidth())
self.scrollArea_2.setSizePolicy(sizePolicy)
self.scrollArea_2.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_2.setFrameShape(QFrame.NoFrame)
self.scrollArea_2.setFrameShadow(QFrame.Plain)
self.scrollArea_2.setWidgetResizable(True)
self.scrollAreaWidgetContents_2 = QWidget()
self.verticalLayout = QVBoxLayout(self.scrollAreaWidgetContents_2)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setSpacing(0)
self.inputsTree = QTreeWidget(self.scrollAreaWidgetContents_2)
self.inputsTree.setAlternatingRowColors(True)
self.inputsTree.header().setVisible(False)
self.verticalLayout.addWidget(self.inputsTree)
self.scrollArea_2.setWidget(self.scrollAreaWidgetContents_2)
self.verticalLayout_3.addWidget(self.scrollArea_2)
self.inputsDock.setWidget(self.inputsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.inputsDock)
self.inputsDock.setWindowTitle(self.tr("Inputs"))
self.algorithmsDock = QgsDockWidget(self)
self.algorithmsDock.setFeatures(QDockWidget.DockWidgetFloatable | QDockWidget.DockWidgetMovable)
self.algorithmsDock.setObjectName("algorithmsDock")
self.algorithmsDockContents = QWidget()
self.verticalLayout_4 = QVBoxLayout(self.algorithmsDockContents)
self.verticalLayout_4.setContentsMargins(0, 0, 0, 0)
self.scrollArea_3 = QgsScrollArea(self.algorithmsDockContents)
sizePolicy.setHeightForWidth(self.scrollArea_3.sizePolicy().hasHeightForWidth())
self.scrollArea_3.setSizePolicy(sizePolicy)
self.scrollArea_3.setFocusPolicy(Qt.WheelFocus)
self.scrollArea_3.setFrameShape(QFrame.NoFrame)
self.scrollArea_3.setFrameShadow(QFrame.Plain)
self.scrollArea_3.setWidgetResizable(True)
self.scrollAreaWidgetContents_3 = QWidget()
self.verticalLayout_2 = QVBoxLayout(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.setContentsMargins(0, 0, 0, 0)
self.verticalLayout_2.setSpacing(4)
self.searchBox = QgsFilterLineEdit(self.scrollAreaWidgetContents_3)
self.verticalLayout_2.addWidget(self.searchBox)
self.algorithmTree = QTreeWidget(self.scrollAreaWidgetContents_3)
self.algorithmTree.setAlternatingRowColors(True)
self.algorithmTree.header().setVisible(False)
self.verticalLayout_2.addWidget(self.algorithmTree)
self.scrollArea_3.setWidget(self.scrollAreaWidgetContents_3)
self.verticalLayout_4.addWidget(self.scrollArea_3)
self.algorithmsDock.setWidget(self.algorithmsDockContents)
self.addDockWidget(Qt.DockWidgetArea(1), self.algorithmsDock)
self.algorithmsDock.setWindowTitle(self.tr("Algorithms"))
self.searchBox.setToolTip(self.tr("Enter algorithm name to filter list"))
self.searchBox.setShowSearchIcon(True)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.centralWidget().layout().insertWidget(0, self.bar)
try:
self.setDockOptions(self.dockOptions() | QMainWindow.GroupedDragging)
except:
pass
self.mToolbar.setIconSize(iface.iconSize())
self.mActionOpen.setIcon(
QgsApplication.getThemeIcon('/mActionFileOpen.svg'))
self.mActionSave.setIcon(
QgsApplication.getThemeIcon('/mActionFileSave.svg'))
self.mActionSaveAs.setIcon(
QgsApplication.getThemeIcon('/mActionFileSaveAs.svg'))
self.mActionZoomActual.setIcon(
QgsApplication.getThemeIcon('/mActionZoomActual.svg'))
self.mActionZoomIn.setIcon(
QgsApplication.getThemeIcon('/mActionZoomIn.svg'))
self.mActionZoomOut.setIcon(
QgsApplication.getThemeIcon('/mActionZoomOut.svg'))
self.mActionExportImage.setIcon(
QgsApplication.getThemeIcon('/mActionSaveMapAsImage.svg'))
self.mActionZoomToItems.setIcon(
QgsApplication.getThemeIcon('/mActionZoomFullExtent.svg'))
self.mActionExportPdf.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsPDF.svg'))
self.mActionExportSvg.setIcon(
QgsApplication.getThemeIcon('/mActionSaveAsSVG.svg'))
#self.mActionExportPython.setIcon(
# QgsApplication.getThemeIcon('/mActionSaveAsPython.svg'))
self.mActionEditHelp.setIcon(
QgsApplication.getThemeIcon('/mActionEditHelpContent.svg'))
self.mActionRun.setIcon(
QgsApplication.getThemeIcon('/mActionStart.svg'))
self.addDockWidget(Qt.LeftDockWidgetArea, self.propertiesDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.inputsDock)
self.addDockWidget(Qt.LeftDockWidgetArea, self.algorithmsDock)
self.tabifyDockWidget(self.inputsDock, self.algorithmsDock)
self.inputsDock.raise_()
self.zoom = 1
self.setWindowFlags(Qt.WindowMinimizeButtonHint |
Qt.WindowMaximizeButtonHint |
Qt.WindowCloseButtonHint)
settings = QgsSettings()
self.restoreState(settings.value("/Processing/stateModeler", QByteArray()))
self.restoreGeometry(settings.value("/Processing/geometryModeler", QByteArray()))
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE, self.CANVAS_SIZE))
self.view.setScene(self.scene)
self.view.setAcceptDrops(True)
self.view.ensureVisible(0, 0, 10, 10)
def _dragEnterEvent(event):
if event.mimeData().hasText():
event.acceptProposedAction()
else:
event.ignore()
def _dropEvent(event):
if event.mimeData().hasText():
itemId = event.mimeData().text()
if itemId in [param.id() for param in QgsApplication.instance().processingRegistry().parameterTypes()]:
self.addInputOfType(itemId, event.pos())
else:
alg = QgsApplication.processingRegistry().createAlgorithmById(itemId)
if alg is not None:
self._addAlgorithm(alg, event.pos())
event.accept()
else:
event.ignore()
def _dragMoveEvent(event):
if event.mimeData().hasText():
event.accept()
else:
event.ignore()
def _wheelEvent(event):
self.view.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
# "Normal" mouse has an angle delta of 120, precision mouses provide data
# faster, in smaller steps
factor = 1.0 + (factor - 1.0) / 120.0 * abs(event.angleDelta().y())
if (event.modifiers() == Qt.ControlModifier):
factor = 1.0 + (factor - 1.0) / 20.0
if event.angleDelta().y() < 0:
factor = 1 / factor
self.view.scale(factor, factor)
def _enterEvent(e):
QGraphicsView.enterEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mouseReleaseEvent(e):
QGraphicsView.mouseReleaseEvent(self.view, e)
self.view.viewport().setCursor(Qt.ArrowCursor)
def _mousePressEvent(e):
if e.button() == Qt.MidButton:
self.previousMousePos = e.pos()
else:
QGraphicsView.mousePressEvent(self.view, e)
def _mouseMoveEvent(e):
if e.buttons() == Qt.MidButton:
offset = self.previousMousePos - e.pos()
self.previousMousePos = e.pos()
self.view.verticalScrollBar().setValue(self.view.verticalScrollBar().value() + offset.y())
self.view.horizontalScrollBar().setValue(self.view.horizontalScrollBar().value() + offset.x())
else:
QGraphicsView.mouseMoveEvent(self.view, e)
self.view.setDragMode(QGraphicsView.ScrollHandDrag)
self.view.dragEnterEvent = _dragEnterEvent
self.view.dropEvent = _dropEvent
self.view.dragMoveEvent = _dragMoveEvent
self.view.wheelEvent = _wheelEvent
self.view.enterEvent = _enterEvent
self.view.mousePressEvent = _mousePressEvent
self.view.mouseMoveEvent = _mouseMoveEvent
def _mimeDataInput(items):
mimeData = QMimeData()
text = items[0].data(0, Qt.UserRole)
mimeData.setText(text)
return mimeData
self.inputsTree.mimeData = _mimeDataInput
self.inputsTree.setDragDropMode(QTreeWidget.DragOnly)
self.inputsTree.setDropIndicatorShown(True)
def _mimeDataAlgorithm(items):
item = items[0]
mimeData = None
if isinstance(item, TreeAlgorithmItem):
mimeData = QMimeData()
mimeData.setText(item.alg.id())
return mimeData
self.algorithmTree.mimeData = _mimeDataAlgorithm
self.algorithmTree.setDragDropMode(QTreeWidget.DragOnly)
self.algorithmTree.setDropIndicatorShown(True)
if hasattr(self.searchBox, 'setPlaceholderText'):
self.searchBox.setPlaceholderText(QCoreApplication.translate('ModelerDialog', 'Search…'))
if hasattr(self.textName, 'setPlaceholderText'):
self.textName.setPlaceholderText(self.tr('Enter model name here'))
if hasattr(self.textGroup, 'setPlaceholderText'):
self.textGroup.setPlaceholderText(self.tr('Enter group name here'))
# Connect signals and slots
self.inputsTree.doubleClicked.connect(self.addInput)
self.searchBox.textChanged.connect(self.textChanged)
self.algorithmTree.doubleClicked.connect(self.addAlgorithm)
# Ctrl+= should also trigger a zoom in action
ctrlEquals = QShortcut(QKeySequence("Ctrl+="), self)
ctrlEquals.activated.connect(self.zoomIn)
self.mActionOpen.triggered.connect(self.openModel)
self.mActionSave.triggered.connect(self.save)
self.mActionSaveAs.triggered.connect(self.saveAs)
self.mActionZoomIn.triggered.connect(self.zoomIn)
self.mActionZoomOut.triggered.connect(self.zoomOut)
self.mActionZoomActual.triggered.connect(self.zoomActual)
self.mActionZoomToItems.triggered.connect(self.zoomToItems)
self.mActionExportImage.triggered.connect(self.exportAsImage)
self.mActionExportPdf.triggered.connect(self.exportAsPdf)
self.mActionExportSvg.triggered.connect(self.exportAsSvg)
#self.mActionExportPython.triggered.connect(self.exportAsPython)
self.mActionEditHelp.triggered.connect(self.editHelp)
self.mActionRun.triggered.connect(self.runModel)
if model is not None:
self.model = model.create()
self.model.setSourceFilePath(model.sourceFilePath())
self.textGroup.setText(self.model.group())
self.textName.setText(self.model.displayName())
self.repaintModel()
else:
self.model = QgsProcessingModelAlgorithm()
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.fillInputsTree()
self.fillTreeUsingProviders()
self.view.centerOn(0, 0)
self.help = None
self.hasChanged = False
def closeEvent(self, evt):
settings = QgsSettings()
settings.setValue("/Processing/stateModeler", self.saveState())
settings.setValue("/Processing/geometryModeler", self.saveGeometry())
if self.hasChanged:
ret = QMessageBox.question(
self, self.tr('Save Model?'),
self.tr('There are unsaved changes in this model. Do you want to keep those?'),
QMessageBox.Save | QMessageBox.Cancel | QMessageBox.Discard, QMessageBox.Cancel)
if ret == QMessageBox.Save:
self.saveModel(False)
evt.accept()
elif ret == QMessageBox.Discard:
evt.accept()
else:
evt.ignore()
else:
evt.accept()
def editHelp(self):
alg = self.model
dlg = HelpEditionDialog(alg)
dlg.exec_()
if dlg.descriptions:
self.model.setHelpContent(dlg.descriptions)
self.hasChanged = True
def runModel(self):
if len(self.model.childAlgorithms()) == 0:
self.bar.pushMessage("", self.tr("Model doesn't contain any algorithm and/or parameter and can't be executed"), level=Qgis.Warning, duration=5)
return
dlg = AlgorithmDialog(self.model)
dlg.exec_()
def save(self):
self.saveModel(False)
def saveAs(self):
self.saveModel(True)
def zoomIn(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomOut(self):
self.view.setTransformationAnchor(QGraphicsView.NoAnchor)
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
settings = QgsSettings()
factor = settings.value('/qgis/zoom_favor', 2.0)
factor = 1 / factor
self.view.scale(factor, factor)
self.view.centerOn(point)
self.repaintModel()
def zoomActual(self):
point = self.view.mapToScene(QPoint(self.view.viewport().width() / 2, self.view.viewport().height() / 2))
self.view.resetTransform()
self.view.centerOn(point)
def zoomToItems(self):
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
self.view.fitInView(totalRect, Qt.KeepAspectRatio)
def exportAsImage(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Image'), '',
self.tr('PNG files (*.png *.PNG)'))
if not filename:
return
if not filename.lower().endswith('.png'):
filename += '.png'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
imgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
img = QImage(totalRect.width(), totalRect.height(),
QImage.Format_ARGB32_Premultiplied)
img.fill(Qt.white)
painter = QPainter()
painter.setRenderHint(QPainter.Antialiasing)
painter.begin(img)
self.scene.render(painter, imgRect, totalRect)
painter.end()
img.save(filename)
self.bar.pushMessage("", self.tr("Model was correctly exported as image"), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPdf(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As PDF'), '',
self.tr('PDF files (*.pdf *.PDF)'))
if not filename:
return
if not filename.lower().endswith('.pdf'):
filename += '.pdf'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
printerRect = QRectF(0, 0, totalRect.width(), totalRect.height())
printer = QPrinter()
printer.setOutputFormat(QPrinter.PdfFormat)
printer.setOutputFileName(filename)
printer.setPaperSize(QSizeF(printerRect.width(), printerRect.height()), QPrinter.DevicePixel)
printer.setFullPage(True)
painter = QPainter(printer)
self.scene.render(painter, printerRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Model was correctly exported as PDF"), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsSvg(self):
self.repaintModel(controls=False)
filename, fileFilter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As SVG'), '',
self.tr('SVG files (*.svg *.SVG)'))
if not filename:
return
if not filename.lower().endswith('.svg'):
filename += '.svg'
totalRect = self.scene.itemsBoundingRect()
totalRect.adjust(-10, -10, 10, 10)
svgRect = QRectF(0, 0, totalRect.width(), totalRect.height())
svg = QSvgGenerator()
svg.setFileName(filename)
svg.setSize(QSize(totalRect.width(), totalRect.height()))
svg.setViewBox(svgRect)
svg.setTitle(self.model.displayName())
painter = QPainter(svg)
self.scene.render(painter, svgRect, totalRect)
painter.end()
self.bar.pushMessage("", self.tr("Model was correctly exported as SVG"), level=Qgis.Success, duration=5)
self.repaintModel(controls=True)
def exportAsPython(self):
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model As Python Script'), '',
self.tr('Python files (*.py *.PY)'))
if not filename:
return
if not filename.lower().endswith('.py'):
filename += '.py'
text = self.model.asPythonCode()
with codecs.open(filename, 'w', encoding='utf-8') as fout:
fout.write(text)
self.bar.pushMessage("", self.tr("Model was correctly exported as python script"), level=Qgis.Success, duration=5)
def saveModel(self, saveAs):
if str(self.textGroup.text()).strip() == '' \
or str(self.textName.text()).strip() == '':
QMessageBox.warning(
self, self.tr('Warning'), self.tr('Please enter group and model names before saving')
)
return
self.model.setName(str(self.textName.text()))
self.model.setGroup(str(self.textGroup.text()))
if self.model.sourceFilePath() and not saveAs:
filename = self.model.sourceFilePath()
else:
filename, filter = QFileDialog.getSaveFileName(self,
self.tr('Save Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3)'))
if filename:
if not filename.endswith('.model3'):
filename += '.model3'
self.model.setSourceFilePath(filename)
if filename:
if not self.model.toFile(filename):
if saveAs:
QMessageBox.warning(self, self.tr('I/O error'),
self.tr('Unable to save edits. Reason:\n {0}').format(str(sys.exc_info()[1])))
else:
QMessageBox.warning(self, self.tr("Can't save model"), QCoreApplication.translate('QgsPluginInstallerInstallingDialog', (
"This model can't be saved in its original location (probably you do not "
"have permission to do it). Please, use the 'Save as…' option."))
)
return
self.update_model.emit()
self.bar.pushMessage("", self.tr("Model was correctly saved"), level=Qgis.Success, duration=5)
self.hasChanged = False
def openModel(self):
filename, selected_filter = QFileDialog.getOpenFileName(self,
self.tr('Open Model'),
ModelerUtils.modelsFolders()[0],
self.tr('Processing models (*.model3 *.MODEL3)'))
if filename:
self.loadModel(filename)
def loadModel(self, filename):
alg = QgsProcessingModelAlgorithm()
if alg.fromFile(filename):
self.model = alg
self.model.setProvider(QgsApplication.processingRegistry().providerById('model'))
self.textGroup.setText(alg.group())
self.textName.setText(alg.name())
self.repaintModel()
self.view.centerOn(0, 0)
self.hasChanged = False
else:
QgsMessageLog.logMessage(self.tr('Could not load model {0}').format(filename),
self.tr('Processing'),
Qgis.Critical)
QMessageBox.critical(self, self.tr('Open Model'),
self.tr('The selected model could not be loaded.\n'
'See the log for more information.'))
def repaintModel(self, controls=True):
self.scene = ModelerScene(self, dialog=self)
self.scene.setSceneRect(QRectF(0, 0, self.CANVAS_SIZE,
self.CANVAS_SIZE))
self.scene.paintModel(self.model, controls)
self.view.setScene(self.scene)
def addInput(self):
item = self.inputsTree.currentItem()
param = item.data(0, Qt.UserRole)
self.addInputOfType(param)
def addInputOfType(self, paramType, pos=None):
dlg = ModelerParameterDefinitionDialog(self.model, paramType)
dlg.exec_()
if dlg.param is not None:
if pos is None:
pos = self.getPositionForParameterItem()
if isinstance(pos, QPoint):
pos = QPointF(pos)
component = QgsProcessingModelParameter(dlg.param.name())
component.setDescription(dlg.param.name())
component.setPosition(pos)
self.model.addModelParameter(dlg.param, component)
self.repaintModel()
# self.view.ensureVisible(self.scene.getLastParameterItem())
self.hasChanged = True
def getPositionForParameterItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if len(self.model.parameterComponents()) > 0:
maxX = max([i.position().x() for i in list(self.model.parameterComponents().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
else:
newX = MARGIN + BOX_WIDTH / 2
return QPointF(newX, MARGIN + BOX_HEIGHT / 2)
def textChanged(self):
text = self.searchBox.text().strip(' ').lower()
for item in list(self.disabledProviderItems.values()):
item.setHidden(True)
self._filterItem(self.algorithmTree.invisibleRootItem(), [t for t in text.split(' ') if t])
if text:
self.algorithmTree.expandAll()
self.disabledWithMatchingAlgs = []
for provider in QgsApplication.processingRegistry().providers():
if not provider.isActive():
for alg in provider.algorithms():
if text in alg.name():
self.disabledWithMatchingAlgs.append(provider.id())
break
else:
self.algorithmTree.collapseAll()
def _filterItem(self, item, text):
if (item.childCount() > 0):
show = False
for i in range(item.childCount()):
child = item.child(i)
showChild = self._filterItem(child, text)
show = (showChild or show) and item not in list(self.disabledProviderItems.values())
item.setHidden(not show)
return show
elif isinstance(item, (TreeAlgorithmItem, TreeActionItem)):
# hide if every part of text is not contained somewhere in either the item text or item user role
item_text = [item.text(0).lower(), item.data(0, ModelerDialog.NAME_ROLE).lower()]
if isinstance(item, TreeAlgorithmItem):
item_text.append(item.alg.id().lower())
if item.alg.shortDescription():
item_text.append(item.alg.shortDescription().lower())
item_text.extend([t.lower() for t in item.data(0, ModelerDialog.TAG_ROLE)])
hide = bool(text) and not all(
any(part in t for t in item_text)
for part in text)
item.setHidden(hide)
return not hide
else:
item.setHidden(True)
return False
def fillInputsTree(self):
icon = QIcon(os.path.join(pluginPath, 'images', 'input.svg'))
parametersItem = QTreeWidgetItem()
parametersItem.setText(0, self.tr('Parameters'))
sortedParams = sorted(QgsApplication.instance().processingRegistry().parameterTypes(), key=lambda pt: pt.name())
for param in sortedParams:
if param.flags() & QgsProcessingParameterType.ExposeToModeler:
paramItem = QTreeWidgetItem()
paramItem.setText(0, param.name())
paramItem.setData(0, Qt.UserRole, param.id())
paramItem.setIcon(0, icon)
paramItem.setFlags(Qt.ItemIsEnabled | Qt.ItemIsSelectable | Qt.ItemIsDragEnabled)
paramItem.setToolTip(0, param.description())
parametersItem.addChild(paramItem)
self.inputsTree.addTopLevelItem(parametersItem)
parametersItem.setExpanded(True)
def addAlgorithm(self):
item = self.algorithmTree.currentItem()
if isinstance(item, TreeAlgorithmItem):
alg = QgsApplication.processingRegistry().createAlgorithmById(item.alg.id())
self._addAlgorithm(alg)
def _addAlgorithm(self, alg, pos=None):
dlg = ModelerParametersDialog(alg, self.model)
if dlg.exec_():
alg = dlg.createAlgorithm()
if pos is None:
alg.setPosition(self.getPositionForAlgorithmItem())
else:
alg.setPosition(pos)
from processing.modeler.ModelerGraphicItem import ModelerGraphicItem
for i, out in enumerate(alg.modelOutputs()):
alg.modelOutput(out).setPosition(alg.position() + QPointF(ModelerGraphicItem.BOX_WIDTH, (i + 1.5) *
ModelerGraphicItem.BOX_HEIGHT))
self.model.addChildAlgorithm(alg)
self.repaintModel()
self.hasChanged = True
def getPositionForAlgorithmItem(self):
MARGIN = 20
BOX_WIDTH = 200
BOX_HEIGHT = 80
if self.model.childAlgorithms():
maxX = max([alg.position().x() for alg in list(self.model.childAlgorithms().values())])
maxY = max([alg.position().y() for alg in list(self.model.childAlgorithms().values())])
newX = min(MARGIN + BOX_WIDTH + maxX, self.CANVAS_SIZE - BOX_WIDTH)
newY = min(MARGIN + BOX_HEIGHT + maxY, self.CANVAS_SIZE -
BOX_HEIGHT)
else:
newX = MARGIN + BOX_WIDTH / 2
newY = MARGIN * 2 + BOX_HEIGHT + BOX_HEIGHT / 2
return QPointF(newX, newY)
def fillTreeUsingProviders(self):
self.algorithmTree.clear()
self.disabledProviderItems = {}
# TODO - replace with proper model for toolbox!
# first add qgis/native providers, since they create top level groups
for provider in QgsApplication.processingRegistry().providers():
if provider.id() in ('qgis', 'native', '3d'):
self.addAlgorithmsFromProvider(provider, self.algorithmTree.invisibleRootItem())
else:
continue
self.algorithmTree.sortItems(0, Qt.AscendingOrder)
for provider in QgsApplication.processingRegistry().providers():
if provider.id() in ('qgis', 'native', '3d'):
# already added
continue
else:
providerItem = TreeProviderItem(provider, self.algorithmTree, self)
# insert non-native providers at end of tree, alphabetically
for i in range(self.algorithmTree.invisibleRootItem().childCount()):
child = self.algorithmTree.invisibleRootItem().child(i)
if isinstance(child, TreeProviderItem):
if child.text(0) > providerItem.text(0):
break
self.algorithmTree.insertTopLevelItem(i + 1, providerItem)
if not provider.isActive():
providerItem.setHidden(True)
self.disabledProviderItems[provider.id()] = providerItem
def addAlgorithmsFromProvider(self, provider, parent):
groups = {}
count = 0
algs = provider.algorithms()
active = provider.isActive()
# Add algorithms
for alg in algs:
if alg.flags() & QgsProcessingAlgorithm.FlagHideFromModeler:
continue
groupItem = None
if alg.group() in groups:
groupItem = groups[alg.group()]
else:
# check if group already exists
for i in range(parent.childCount()):
if parent.child(i).text(0) == alg.group():
groupItem = parent.child(i)
groups[alg.group()] = groupItem
break
if not groupItem:
groupItem = TreeGroupItem(alg.group())
if not active:
groupItem.setInactive()
if provider.id() in ('qgis', 'native', '3d'):
groupItem.setIcon(0, provider.icon())
groups[alg.group()] = groupItem
algItem = TreeAlgorithmItem(alg)
if not active:
algItem.setForeground(0, Qt.darkGray)
groupItem.addChild(algItem)
count += 1
text = provider.name()
if not provider.id() in ('qgis', 'native', '3d'):
if not active:
def activateProvider():
self.activateProvider(provider.id())
label = QLabel(text + " <a href='%s'>Activate</a>")
label.setStyleSheet("QLabel {background-color: white; color: grey;}")
label.linkActivated.connect(activateProvider)
self.algorithmTree.setItemWidget(parent, 0, label)
else:
parent.setText(0, text)
for group, groupItem in sorted(groups.items(), key=operator.itemgetter(1)):
parent.addChild(groupItem)
if not provider.id() in ('qgis', 'native', '3d'):
parent.setHidden(parent.childCount() == 0)
class ModelerParametersPanelWidget(QgsPanelWidget):
def __init__(self, alg, model, algName=None, configuration=None, dialog=None, context=None):
super().__init__()
self._alg = alg # The algorithm to define in this dialog. It is an instance of QgsProcessingAlgorithm
self.model = model # The model this algorithm is going to be added to. It is an instance of QgsProcessingModelAlgorithm
self.childId = algName # The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self.configuration = configuration
self.context = context
self.dialog = dialog
self.widget_labels = {}
self.previous_output_definitions = {}
class ContextGenerator(QgsProcessingContextGenerator):
def __init__(self, context):
super().__init__()
self.processing_context = context
def processingContext(self):
return self.processing_context
self.context_generator = ContextGenerator(self.context)
self.setupUi()
self.params = None
def algorithm(self):
return self._alg
def setupUi(self):
self.showAdvanced = False
self.wrappers = {}
self.algorithmItem = None
self.mainLayout = QVBoxLayout()
self.mainLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout = QVBoxLayout()
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setContentsMargins(0, 0, 0, 0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
widget_context = QgsProcessingParameterWidgetContext()
widget_context.setProject(QgsProject.instance())
if iface is not None:
widget_context.setMapCanvas(iface.mapCanvas())
widget_context.setActiveLayer(iface.activeLayer())
widget_context.setModel(self.model)
widget_context.setModelChildAlgorithmId(self.childId)
self.algorithmItem = QgsGui.instance().processingGuiRegistry().algorithmConfigurationWidget(self._alg)
if self.algorithmItem:
self.algorithmItem.setWidgetContext(widget_context)
self.algorithmItem.registerProcessingContextGenerator(self.context_generator)
if self.configuration:
self.algorithmItem.setConfiguration(self.configuration)
self.verticalLayout.addWidget(self.algorithmItem)
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
wrapper = WidgetWrapperFactory.create_wrapper(param, self.dialog)
self.wrappers[param.name()] = wrapper
wrapper.setWidgetContext(widget_context)
wrapper.registerProcessingContextGenerator(self.context_generator)
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
widget = wrapper
else:
widget = wrapper.widget
if widget is not None:
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
label = wrapper.createLabel()
else:
tooltip = param.description()
widget.setToolTip(tooltip)
label = wrapper.label
self.widget_labels[param.name()] = label
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for output in self._alg.destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
widget = QgsGui.processingGuiRegistry().createModelerParameterWidget(self.model,
self.childId,
output,
self.context)
widget.setDialog(self.dialog)
widget.setWidgetContext(widget_context)
widget.registerProcessingContextGenerator(self.context_generator)
self.wrappers[output.name()] = widget
item = QgsFilterLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(self.tr('[Enter name if this is a final result]'))
label = widget.createLabel()
if label is not None:
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Dependencies'))
self.dependencies_panel = QgsModelChildDependenciesWidget(self, self.model, self.childId)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependencies_panel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.scrollArea.setFrameStyle(QFrame.NoFrame)
self.verticalLayout2.addWidget(self.scrollArea)
w = QWidget()
w.setLayout(self.verticalLayout2)
self.mainLayout.addWidget(w)
self.setLayout(self.mainLayout)
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
wrapper.setVisible(self.showAdvanced)
else:
wrapper.widget.setVisible(self.showAdvanced)
self.widget_labels[param.name()].setVisible(self.showAdvanced)
def setPreviousValues(self):
if self.childId is not None:
alg = self.model.childAlgorithm(self.childId)
self.descriptionBox.setText(alg.description())
for param in alg.algorithm().parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
value = None
if param.name() in alg.parameterSources():
value = alg.parameterSources()[param.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(param.defaultValue())
wrapper.setWidgetValue(value)
else:
if value is None:
value = param.defaultValue()
if isinstance(value,
QgsProcessingModelChildParameterSource) and value.source() == QgsProcessingModelChildParameterSource.StaticValue:
value = value.staticValue()
wrapper.setValue(value)
for output in self.algorithm().destinationParameterDefinitions():
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
model_output_name = None
for name, out in alg.modelOutputs().items():
if out.childId() == self.childId and out.childOutputName() == output.name():
# this destination parameter is linked to a model output
model_output_name = out.name()
self.previous_output_definitions[output.name()] = out
break
value = None
if model_output_name is None and output.name() in alg.parameterSources():
value = alg.parameterSources()[output.name()]
if isinstance(value, list) and len(value) == 1:
value = value[0]
elif isinstance(value, list) and len(value) == 0:
value = None
wrapper = self.wrappers[output.name()]
if model_output_name is not None:
wrapper.setToModelOutput(model_output_name)
elif value is not None or output.defaultValue() is not None:
if value is None:
value = QgsProcessingModelChildParameterSource.fromStaticValue(output.defaultValue())
wrapper.setWidgetValue(value)
self.dependencies_panel.setValue(alg.dependencies())
def createAlgorithm(self):
alg = QgsProcessingModelChildAlgorithm(self._alg.id())
if not self.childId:
alg.generateChildId(self.model)
else:
alg.setChildId(self.childId)
alg.setDescription(self.descriptionBox.text())
if self.algorithmItem:
alg.setConfiguration(self.algorithmItem.configuration())
self._alg = alg.algorithm().create(self.algorithmItem.configuration())
for param in self._alg.parameterDefinitions():
if param.isDestination() or param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
try:
wrapper = self.wrappers[param.name()]
if issubclass(wrapper.__class__, WidgetWrapper):
val = wrapper.value()
elif issubclass(wrapper.__class__, QgsProcessingModelerParameterWidget):
val = wrapper.value()
else:
val = wrapper.parameterValue()
except InvalidParameterValue:
val = None
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
elif not (isinstance(val, list) and all(
[isinstance(subval, QgsProcessingModelChildParameterSource) for subval in val])):
val = [QgsProcessingModelChildParameterSource.fromStaticValue(val)]
valid = True
for subval in val:
if (isinstance(subval, QgsProcessingModelChildParameterSource)
and subval.source() == QgsProcessingModelChildParameterSource.StaticValue
and not param.checkValueIsAcceptable(subval.staticValue())) \
or (subval is None and not param.flags() & QgsProcessingParameterDefinition.FlagOptional):
valid = False
break
if valid:
alg.addParameterSources(param.name(), val)
outputs = {}
for output in self._alg.destinationParameterDefinitions():
if not output.flags() & QgsProcessingParameterDefinition.FlagHidden:
wrapper = self.wrappers[output.name()]
if wrapper.isModelOutput():
name = wrapper.modelOutputName()
if name:
# if there was a previous output definition already for this output, we start with it,
# otherwise we'll lose any existing output comments, coloring, position, etc
model_output = self.previous_output_definitions.get(output.name(), QgsProcessingModelOutput(name, name))
model_output.setDescription(name)
model_output.setChildId(alg.childId())
model_output.setChildOutputName(output.name())
outputs[name] = model_output
else:
val = wrapper.value()
if isinstance(val, QgsProcessingModelChildParameterSource):
val = [val]
alg.addParameterSources(output.name(), val)
if output.flags() & QgsProcessingParameterDefinition.FlagIsModelOutput:
if output.name() not in outputs:
model_output = QgsProcessingModelOutput(output.name(), output.name())
model_output.setChildId(alg.childId())
model_output.setChildOutputName(output.name())
outputs[output.name()] = model_output
alg.setModelOutputs(outputs)
alg.setDependencies(self.dependencies_panel.value())
return alg
class ModelerParametersDialog(QDialog):
ENTER_NAME = '[Enter name if this is a final result]'
NOT_SELECTED = '[Not selected]'
USE_MIN_COVERING_EXTENT = '[Use min covering extent]'
def __init__(self, alg, model, algName=None):
QDialog.__init__(self)
self.setModal(True)
# The algorithm to define in this dialog. It is an instance of GeoAlgorithm
self._alg = alg
# The resulting algorithm after the user clicks on OK. it is an instance of the container Algorithm class
self.alg = None
# The model this algorithm is going to be added to
self.model = model
# The name of the algorithm in the model, in case we are editing it and not defining it for the first time
self._algName = algName
self.setupUi()
self.params = None
def setupUi(self):
self.labels = {}
self.widgets = {}
self.checkBoxes = {}
self.showAdvanced = False
self.wrappers = {}
self.valueItems = {}
self.dependentItems = {}
self.resize(650, 450)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Cancel |
+ QDialogButtonBox.Ok |
+ QDialogButtonBox.Help)
self.setSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Expanding)
self.verticalLayout = QVBoxLayout()
self.verticalLayout.setSpacing(5)
self.verticalLayout.setMargin(20)
self.bar = QgsMessageBar()
self.bar.setSizePolicy(QSizePolicy.Minimum, QSizePolicy.Fixed)
self.verticalLayout.addWidget(self.bar)
hLayout = QHBoxLayout()
hLayout.setSpacing(5)
hLayout.setMargin(0)
descriptionLabel = QLabel(self.tr("Description"))
self.descriptionBox = QLineEdit()
self.descriptionBox.setText(self._alg.displayName())
hLayout.addWidget(descriptionLabel)
hLayout.addWidget(self.descriptionBox)
self.verticalLayout.addLayout(hLayout)
line = QFrame()
line.setFrameShape(QFrame.HLine)
line.setFrameShadow(QFrame.Sunken)
self.verticalLayout.addWidget(line)
for param in self._alg.parameters:
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.advancedButton = QPushButton()
self.advancedButton.setText(self.tr('Show advanced parameters'))
self.advancedButton.clicked.connect(
self.showAdvancedParametersClicked)
advancedButtonHLayout = QHBoxLayout()
advancedButtonHLayout.addWidget(self.advancedButton)
advancedButtonHLayout.addStretch()
self.verticalLayout.addLayout(advancedButtonHLayout)
break
for param in self._alg.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
desc = param.description()
if isinstance(param, ParameterExtent):
desc += self.tr('(xmin, xmax, ymin, ymax)')
if isinstance(param, ParameterPoint):
desc += self.tr('(x, y)')
if param.flags() & QgsProcessingParameterDefinition.FlagOptional:
desc += self.tr(' [optional]')
label = QLabel(desc)
self.labels[param.name()] = label
wrapper = WidgetWrapperFactory.create_wrapper(param, self)
self.wrappers[param.name()] = wrapper
widget = wrapper.widget
if widget is not None:
self.valueItems[param.name()] = widget
tooltip = param.description()
label.setToolTip(tooltip)
widget.setToolTip(tooltip)
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
label.setVisible(self.showAdvanced)
widget.setVisible(self.showAdvanced)
self.widgets[param.name()] = widget
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(widget)
for output in self._alg.outputs:
if output.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if isinstance(output, (OutputRaster, OutputVector, OutputTable,
OutputHTML, OutputFile, OutputDirectory)):
label = QLabel(output.description() + '<' +
output.__class__.__name__ + '>')
item = QLineEdit()
if hasattr(item, 'setPlaceholderText'):
item.setPlaceholderText(ModelerParametersDialog.ENTER_NAME)
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(item)
self.valueItems[output.name] = item
label = QLabel(' ')
self.verticalLayout.addWidget(label)
label = QLabel(self.tr('Parent algorithms'))
self.dependenciesPanel = self.getDependenciesPanel()
self.verticalLayout.addWidget(label)
self.verticalLayout.addWidget(self.dependenciesPanel)
self.verticalLayout.addStretch(1000)
self.setPreviousValues()
self.setWindowTitle(self._alg.displayName())
self.verticalLayout2 = QVBoxLayout()
self.verticalLayout2.setSpacing(2)
self.verticalLayout2.setMargin(0)
self.paramPanel = QWidget()
self.paramPanel.setLayout(self.verticalLayout)
self.scrollArea = QgsScrollArea()
self.scrollArea.setWidget(self.paramPanel)
self.scrollArea.setWidgetResizable(True)
self.verticalLayout2.addWidget(self.scrollArea)
self.verticalLayout2.addWidget(self.buttonBox)
self.setLayout(self.verticalLayout2)
self.buttonBox.accepted.connect(self.okPressed)
self.buttonBox.rejected.connect(self.cancelPressed)
self.buttonBox.helpRequested.connect(self.openHelp)
QMetaObject.connectSlotsByName(self)
for wrapper in list(self.wrappers.values()):
wrapper.postInitialize(list(self.wrappers.values()))
def getAvailableDependencies(self): # spellok
if self._algName is None:
dependent = []
else:
dependent = self.model.getDependentAlgorithms(self._algName)
opts = []
for alg in list(self.model.algs.values()):
if alg.modeler_name not in dependent:
opts.append(alg)
return opts
def getDependenciesPanel(self):
return MultipleInputPanel([alg.description for alg in self.getAvailableDependencies()]) # spellok
def showAdvancedParametersClicked(self):
self.showAdvanced = not self.showAdvanced
if self.showAdvanced:
self.advancedButton.setText(self.tr('Hide advanced parameters'))
else:
self.advancedButton.setText(self.tr('Show advanced parameters'))
for param in self._alg.parameters:
if param.flags() & QgsProcessingParameterDefinition.FlagAdvanced:
self.labels[param.name].setVisible(self.showAdvanced)
self.widgets[param.name].setVisible(self.showAdvanced)
def getAvailableValuesOfType(self, paramType, outType=None, dataType=None):
# upgrade paramType to list
if type(paramType) is not list:
paramType = [paramType]
values = []
inputs = self.model.inputs
for i in list(inputs.values()):
param = i.param
for t in paramType:
if isinstance(param, t):
if dataType is not None:
if param.datatype in dataType:
values.append(ValueFromInput(param.name))
else:
values.append(ValueFromInput(param.name))
break
if outType is None:
return values
if self._algName is None:
dependent = []
else:
dependent = self.model.getDependentAlgorithms(self._algName)
for alg in list(self.model.algs.values()):
if alg.modeler_name not in dependent:
for out in alg.algorithm.outputs:
if isinstance(out, outType):
if dataType is not None and out.datatype in dataType:
values.append(ValueFromOutput(alg.modeler_name, out.name))
else:
values.append(ValueFromOutput(alg.modeler_name, out.name))
return values
def resolveValueDescription(self, value):
if isinstance(value, ValueFromInput):
return self.model.inputs[value.name].param.description()
else:
alg = self.model.algs[value.alg]
return self.tr("'{0}' from algorithm '{1}'").format(alg.algorithm.getOutputFromName(value.output).description(), alg.description)
def setPreviousValues(self):
if self._algName is not None:
alg = self.model.algs[self._algName]
self.descriptionBox.setText(alg.description)
for param in alg.algorithm.parameterDefinitions():
if param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if param.name() in alg.params:
value = alg.params[param.name()]
else:
value = param.defaultValue()
self.wrappers[param.name()].setValue(value)
for name, out in list(alg.outputs.items()):
self.valueItems[name].setText(out.description())
selected = []
dependencies = self.getAvailableDependencies() # spellok
for idx, dependency in enumerate(dependencies):
if dependency.name in alg.dependencies:
selected.append(idx)
self.dependenciesPanel.setSelectedItems(selected)
def createAlgorithm(self):
alg = Algorithm(self._alg.id())
alg.setName(self.model)
alg.description = self.descriptionBox.text()
params = self._alg.parameterDefinitions()
outputs = self._alg.outputs
for param in params:
if param.flags() & QgsProcessingParameterDefinition.FlagHidden:
continue
if not param.checkValueIsAcceptable(self.wrappers[param.name()].value):
self.bar.pushMessage("Error", "Wrong or missing value for parameter '%s'" % param.description(),
level=QgsMessageBar.WARNING)
return None
for output in outputs:
if not output.flags() & QgsProcessingParameterDefinition.FlagHidden:
name = str(self.valueItems[output.name()].text())
if name.strip() != '' and name != ModelerParametersDialog.ENTER_NAME:
alg.outputs[output.name()] = ModelerOutput(name)
selectedOptions = self.dependenciesPanel.selectedoptions
availableDependencies = self.getAvailableDependencies() # spellok
for selected in selectedOptions:
alg.dependencies.append(availableDependencies[selected].name) # spellok
self._alg.processBeforeAddingToModeler(alg, self.model)
return alg
def okPressed(self):
self.alg = self.createAlgorithm()
if self.alg is not None:
self.close()
def cancelPressed(self):
self.alg = None
self.close()
def openHelp(self):
algHelp = self._alg.help()
if algHelp is not None:
webbrowser.open(algHelp)