本文整理汇总了Python中qgis.gui.QgsExpressionLineEdit类的典型用法代码示例。如果您正苦于以下问题：Python QgsExpressionLineEdit类的具体用法？Python QgsExpressionLineEdit怎么用？Python QgsExpressionLineEdit使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了QgsExpressionLineEdit类的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_ChangedSignals
def test_ChangedSignals(self):
""" test that signals are correctly emitted when changing expressions"""
w = QgsExpressionLineEdit()
expression_changed_spy = QSignalSpy(w.expressionChanged)
w.setExpression('1+1')
self.assertEqual(len(expression_changed_spy), 1)
self.assertEqual(expression_changed_spy[0][0], '1+1')示例2: setupUi
#.........这里部分代码省略.........
self.datatypeCombo.addItem(self.tr('Vector (any)'))
self.datatypeCombo.addItem(self.tr('Vector (point)'))
self.datatypeCombo.addItem(self.tr('Vector (line)'))
self.datatypeCombo.addItem(self.tr('Vector (polygon)'))
self.datatypeCombo.addItem(self.tr('Raster'))
self.datatypeCombo.addItem(self.tr('File'))
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.param.datatype + 1)
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_NUMBER or
isinstance(self.param, ParameterNumber)):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.min))
self.maxTextBox.setText(str(self.param.max))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.default
if self.param.isInteger:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_EXPRESSION or
isinstance(self.param, ParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.inputs.values()):
if isinstance(param.param, (ParameterVector, ParameterTable)):
self.parentCombo.addItem(param.param.description(), param.param.name())
if self.param is not None:
if self.param.parent_layer == param.param.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_STRING or
isinstance(self.param, ParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_FILE or
isinstance(self.param, ParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(
1 if self.param.isFolder else 0)示例3: ModelerParameterDefinitionDialog
#.........这里部分代码省略.........
self.datatypeCombo.addItem(self.tr('Vector (any)'))
self.datatypeCombo.addItem(self.tr('Vector (point)'))
self.datatypeCombo.addItem(self.tr('Vector (line)'))
self.datatypeCombo.addItem(self.tr('Vector (polygon)'))
self.datatypeCombo.addItem(self.tr('Raster'))
self.datatypeCombo.addItem(self.tr('File'))
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.param.datatype + 1)
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_NUMBER or
isinstance(self.param, ParameterNumber)):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.min))
self.maxTextBox.setText(str(self.param.max))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.default
if self.param.isInteger:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_EXPRESSION or
isinstance(self.param, ParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.inputs.values()):
if isinstance(param.param, (ParameterVector, ParameterTable)):
self.parentCombo.addItem(param.param.description(), param.param.name())
if self.param is not None:
if self.param.parent_layer == param.param.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_STRING or
isinstance(self.param, ParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_FILE or
isinstance(self.param, ParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(
1 if self.param.isFolder else 0)示例4: setupUi
#.........这里部分代码省略.........
self.datatypeCombo.addItem(self.tr('Vector (Point)'), QgsProcessing.TypeVectorPoint)
self.datatypeCombo.addItem(self.tr('Vector (Line)'), QgsProcessing.TypeVectorLine)
self.datatypeCombo.addItem(self.tr('Vector (Polygon)'), QgsProcessing.TypeVectorPolygon)
self.datatypeCombo.addItem(self.tr('Vector (Any Geometry Type)'), QgsProcessing.TypeVectorAnyGeometry)
self.datatypeCombo.addItem(self.tr('Raster'), QgsProcessing.TypeRaster)
self.datatypeCombo.addItem(self.tr('File'), QgsProcessing.TypeFile)
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.datatypeCombo.findData(self.param.layerType()))
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == parameters.PARAMETER_NUMBER or self.paramType == parameters.PARAMETER_DISTANCE or
isinstance(self.param, (QgsProcessingParameterNumber, QgsProcessingParameterDistance))):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.minimum()))
self.maxTextBox.setText(str(self.param.maximum()))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.defaultValue()
if self.param.dataType() == QgsProcessingParameterNumber.Integer:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_EXPRESSION or
isinstance(self.param, QgsProcessingParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == parameters.PARAMETER_STRING or
isinstance(self.param, QgsProcessingParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_FILE or
isinstance(self.param, QgsProcessingParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(示例5: ModelerParameterDefinitionDialog
#.........这里部分代码省略.........
self.datatypeCombo.addItem(self.tr('Vector (Point)'), QgsProcessing.TypeVectorPoint)
self.datatypeCombo.addItem(self.tr('Vector (Line)'), QgsProcessing.TypeVectorLine)
self.datatypeCombo.addItem(self.tr('Vector (Polygon)'), QgsProcessing.TypeVectorPolygon)
self.datatypeCombo.addItem(self.tr('Vector (Any Geometry Type)'), QgsProcessing.TypeVectorAnyGeometry)
self.datatypeCombo.addItem(self.tr('Raster'), QgsProcessing.TypeRaster)
self.datatypeCombo.addItem(self.tr('File'), QgsProcessing.TypeFile)
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.datatypeCombo.findData(self.param.layerType()))
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == parameters.PARAMETER_NUMBER or self.paramType == parameters.PARAMETER_DISTANCE or
isinstance(self.param, (QgsProcessingParameterNumber, QgsProcessingParameterDistance))):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.minimum()))
self.maxTextBox.setText(str(self.param.maximum()))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.defaultValue()
if self.param.dataType() == QgsProcessingParameterNumber.Integer:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_EXPRESSION or
isinstance(self.param, QgsProcessingParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == parameters.PARAMETER_STRING or
isinstance(self.param, QgsProcessingParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == parameters.PARAMETER_FILE or
isinstance(self.param, QgsProcessingParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(示例6: testSetGetExpression
def testSetGetExpression(self):
""" test setting and getting expression """
w = QgsExpressionLineEdit()
self.assertFalse(w.expression())
w.setExpression('1+2')
self.assertEqual(w.expression(), '1+2')
result, error = w.isValidExpression()
self.assertTrue(result)
w.setExpression('1+')
self.assertEqual(w.expression(), '1+')
result, error = w.isValidExpression()
self.assertFalse(result)
self.assertTrue(error)
# try with a multiline widget too
w.setMultiLine(True)
self.assertEqual(w.expression(), '1+')
w.setExpression('1+3')
self.assertEqual(w.expression(), '1+3')
# and flip back again...
w.setMultiLine(False)
self.assertEqual(w.expression(), '1+3')示例7: testDialog
def testDialog(self):
""" test dialog related methods """
w = QgsExpressionLineEdit()
w.setExpressionDialogTitle('test')
self.assertEqual(w.expressionDialogTitle(), 'test')示例8: ModelerParameterDefinitionDialog
#.........这里部分代码省略.........
self.datatypeCombo.addItem(self.tr('Vector (Point)'), QgsProcessing.TypeVectorPoint)
self.datatypeCombo.addItem(self.tr('Vector (Line)'), QgsProcessing.TypeVectorLine)
self.datatypeCombo.addItem(self.tr('Vector (Polygon)'), QgsProcessing.TypeVectorPolygon)
self.datatypeCombo.addItem(self.tr('Vector (Any Geometry Type)'), QgsProcessing.TypeVectorAnyGeometry)
self.datatypeCombo.addItem(self.tr('Raster'), QgsProcessing.TypeRaster)
self.datatypeCombo.addItem(self.tr('File'), QgsProcessing.TypeFile)
if self.param is not None:
self.datatypeCombo.setCurrentIndex(self.datatypeCombo.findData(self.param.layerType()))
self.verticalLayout.addWidget(self.datatypeCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_NUMBER or
isinstance(self.param, QgsProcessingParameterNumber)):
self.verticalLayout.addWidget(QLabel(self.tr('Min value')))
self.minTextBox = QLineEdit()
self.verticalLayout.addWidget(self.minTextBox)
self.verticalLayout.addWidget(QLabel(self.tr('Max value')))
self.maxTextBox = QLineEdit()
self.verticalLayout.addWidget(self.maxTextBox)
if self.param is not None:
self.minTextBox.setText(str(self.param.minimum()))
self.maxTextBox.setText(str(self.param.maximum()))
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
self.defaultTextBox.setText(self.tr('0'))
if self.param is not None:
default = self.param.defaultValue()
if self.param.dataType() == QgsProcessingParameterNumber.Integer:
default = int(math.floor(default))
if default:
self.defaultTextBox.setText(str(default))
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_EXPRESSION or
isinstance(self.param, QgsProcessingParameterExpression)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultEdit = QgsExpressionLineEdit()
if self.param is not None:
self.defaultEdit.setExpression(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultEdit)
self.verticalLayout.addWidget(QLabel(self.tr('Parent layer')))
self.parentCombo = QComboBox()
self.parentCombo.addItem(self.tr("None"), None)
idx = 1
for param in list(self.alg.parameterComponents().values()):
definition = self.alg.parameterDefinition(param.parameterName())
if isinstance(definition, (QgsProcessingParameterFeatureSource, QgsProcessingParameterVectorLayer)):
self.parentCombo.addItem(definition.description(), definition.name())
if self.param is not None:
if self.param.parentLayerParameterName() == definition.name():
self.parentCombo.setCurrentIndex(idx)
idx += 1
self.verticalLayout.addWidget(self.parentCombo)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_STRING or
isinstance(self.param, QgsProcessingParameterString)):
self.verticalLayout.addWidget(QLabel(self.tr('Default value')))
self.defaultTextBox = QLineEdit()
if self.param is not None:
self.defaultTextBox.setText(self.param.defaultValue())
self.verticalLayout.addWidget(self.defaultTextBox)
elif (self.paramType == ModelerParameterDefinitionDialog.PARAMETER_FILE or
isinstance(self.param, QgsProcessingParameterFile)):
self.verticalLayout.addWidget(QLabel(self.tr('Type')))
self.fileFolderCombo = QComboBox()
self.fileFolderCombo.addItem(self.tr('File'))
self.fileFolderCombo.addItem(self.tr('Folder'))
if self.param is not None:
self.fileFolderCombo.setCurrentIndex(