本文整理汇总了Python中qgis.gui.QgsExpressionBuilderWidget类的典型用法代码示例。如果您正苦于以下问题：Python QgsExpressionBuilderWidget类的具体用法？Python QgsExpressionBuilderWidget怎么用？Python QgsExpressionBuilderWidget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QgsExpressionBuilderWidget类的5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: testLayers
def testLayers(self):
""" check that layers are shown in widget model"""
p = QgsProject.instance()
layer = QgsVectorLayer("Point", "layer1", "memory")
layer2 = QgsVectorLayer("Point", "layer2", "memory")
p.addMapLayers([layer, layer2])
w = QgsExpressionBuilderWidget()
m = w.model()
# check that layers are shown
items = m.findItems('layer1', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('layer2', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
# change project
p2 = QgsProject()
layer3 = QgsVectorLayer("Point", "layer3", "memory")
p2.addMapLayers([layer3])
w.setProject(p2)
m = w.model()
items = m.findItems('layer1', Qt.MatchRecursive)
self.assertEqual(len(items), 0)
items = m.findItems('layer2', Qt.MatchRecursive)
self.assertEqual(len(items), 0)
items = m.findItems('layer3', Qt.MatchRecursive)
self.assertEqual(len(items), 1)示例2: testRelations
def testRelations(self):
""" check that layers are shown in widget model"""
p = QgsProject.instance()
# not valid, but doesn't matter for test....
rel = QgsRelation()
rel.setId('rel1')
rel.setName('Relation Number One')
rel.setReferencingLayer(self.referencingLayer.id())
rel.setReferencedLayer(self.referencedLayer.id())
rel.addFieldPair('foreignkey', 'y')
rel2 = QgsRelation()
rel2.setId('rel2')
rel2.setName('Relation Number Two')
rel2.setReferencingLayer(self.referencingLayer.id())
rel2.setReferencedLayer(self.referencedLayer.id())
rel2.addFieldPair('foreignkey', 'y')
p.relationManager().addRelation(rel)
p.relationManager().addRelation(rel2)
w = QgsExpressionBuilderWidget()
m = w.model()
# check that relations are shown
items = m.findItems('Relation Number One', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('Relation Number Two', Qt.MatchRecursive)
self.assertEqual(len(items), 1)示例3: testFunctionPresent
def testFunctionPresent(self):
""" check through widget model to ensure it is initially populated with functions """
w = QgsExpressionBuilderWidget()
m = w.model()
# check that some standard expression functions are shown
items = m.findItems('lower', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('upper', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('asdasdasda#[email protected]#$', Qt.MatchRecursive)
self.assertEqual(len(items), 0)示例4: testVariables
def testVariables(self):
""" check through widget model to ensure it is populated with variables """
w = QgsExpressionBuilderWidget()
m = w.model()
s = QgsExpressionContextScope()
s.setVariable('my_var1', 'x')
s.setVariable('my_var2', 'y')
c = QgsExpressionContext()
c.appendScope(s)
# check that variables are added when setting context
w.setExpressionContext(c)
items = m.findItems('my_var1', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('my_var2', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('not_my_var', Qt.MatchRecursive)
self.assertEqual(len(items), 0)
# double check that functions are still only there once
items = m.findItems('lower', Qt.MatchRecursive)
self.assertEqual(len(items), 1)
items = m.findItems('upper', Qt.MatchRecursive)
self.assertEqual(len(items), 1)示例5: setupUi
def setupUi(self, FieldsCalculator):
FieldsCalculator.setObjectName(_fromUtf8("FieldsCalculator"))
FieldsCalculator.resize(681, 681)
self.gridLayout = QtGui.QGridLayout(FieldsCalculator)
self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
self.mNewFieldGroupBox = QtGui.QGroupBox(FieldsCalculator)
sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Fixed, QtGui.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.mNewFieldGroupBox.sizePolicy().hasHeightForWidth())
self.mNewFieldGroupBox.setSizePolicy(sizePolicy)
self.mNewFieldGroupBox.setFlat(True)
self.mNewFieldGroupBox.setCheckable(True)
self.mNewFieldGroupBox.setChecked(True)
self.mNewFieldGroupBox.setObjectName(_fromUtf8("mNewFieldGroupBox"))
self.gridlayout = QtGui.QGridLayout(self.mNewFieldGroupBox)
self.gridlayout.setSizeConstraint(QtGui.QLayout.SetMinimumSize)
self.gridlayout.setContentsMargins(3, 3, 3, 0)
self.gridlayout.setVerticalSpacing(3)
self.gridlayout.setObjectName(_fromUtf8("gridlayout"))
self.mFieldNameLabel = QtGui.QLabel(self.mNewFieldGroupBox)
self.mFieldNameLabel.setObjectName(_fromUtf8("mFieldNameLabel"))
self.gridlayout.addWidget(self.mFieldNameLabel, 0, 0, 1, 1)
self.mOutputFieldNameLineEdit = QtGui.QLineEdit(self.mNewFieldGroupBox)
self.mOutputFieldNameLineEdit.setObjectName(_fromUtf8("mOutputFieldNameLineEdit"))
self.gridlayout.addWidget(self.mOutputFieldNameLineEdit, 0, 1, 1, 3)
self.mOutputFieldTypeLabel = QtGui.QLabel(self.mNewFieldGroupBox)
self.mOutputFieldTypeLabel.setObjectName(_fromUtf8("mOutputFieldTypeLabel"))
self.gridlayout.addWidget(self.mOutputFieldTypeLabel, 1, 0, 1, 1)
self.mOutputFieldTypeComboBox = QtGui.QComboBox(self.mNewFieldGroupBox)
self.mOutputFieldTypeComboBox.setObjectName(_fromUtf8("mOutputFieldTypeComboBox"))
self.gridlayout.addWidget(self.mOutputFieldTypeComboBox, 1, 1, 1, 3)
self.mOutputFieldWidthLabel = QtGui.QLabel(self.mNewFieldGroupBox)
self.mOutputFieldWidthLabel.setObjectName(_fromUtf8("mOutputFieldWidthLabel"))
self.gridlayout.addWidget(self.mOutputFieldWidthLabel, 2, 0, 1, 1)
self.mOutputFieldWidthSpinBox = QtGui.QSpinBox(self.mNewFieldGroupBox)
self.mOutputFieldWidthSpinBox.setMinimum(0)
self.mOutputFieldWidthSpinBox.setProperty("value", 15)
self.mOutputFieldWidthSpinBox.setObjectName(_fromUtf8("mOutputFieldWidthSpinBox"))
self.gridlayout.addWidget(self.mOutputFieldWidthSpinBox, 2, 1, 1, 1)
self.mOutputFieldPrecisionLabel = QtGui.QLabel(self.mNewFieldGroupBox)
self.mOutputFieldPrecisionLabel.setObjectName(_fromUtf8("mOutputFieldPrecisionLabel"))
self.gridlayout.addWidget(self.mOutputFieldPrecisionLabel, 2, 2, 1, 1)
self.mOutputFieldPrecisionSpinBox = QtGui.QSpinBox(self.mNewFieldGroupBox)
self.mOutputFieldPrecisionSpinBox.setProperty("value", 2)
self.mOutputFieldPrecisionSpinBox.setObjectName(_fromUtf8("mOutputFieldPrecisionSpinBox"))
self.gridlayout.addWidget(self.mOutputFieldPrecisionSpinBox, 2, 3, 1, 1)
self.gridLayout.addWidget(self.mNewFieldGroupBox, 2, 0, 1, 1)
self.mButtonBox = QtGui.QDialogButtonBox(FieldsCalculator)
sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(3)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.mButtonBox.sizePolicy().hasHeightForWidth())
self.mButtonBox.setSizePolicy(sizePolicy)
self.mButtonBox.setOrientation(QtCore.Qt.Horizontal)
self.mButtonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
self.mButtonBox.setObjectName(_fromUtf8("mButtonBox"))
self.gridLayout.addWidget(self.mButtonBox, 5, 0, 1, 2)
self.horizontalLayout = QtGui.QHBoxLayout()
self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
self.label = QtGui.QLabel(FieldsCalculator)
self.label.setObjectName(_fromUtf8("label"))
self.horizontalLayout.addWidget(self.label)
self.cmbInputLayer = QtGui.QComboBox(FieldsCalculator)
sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
sizePolicy.setHorizontalStretch(0)
sizePolicy.setVerticalStretch(0)
sizePolicy.setHeightForWidth(self.cmbInputLayer.sizePolicy().hasHeightForWidth())
self.cmbInputLayer.setSizePolicy(sizePolicy)
self.cmbInputLayer.setObjectName(_fromUtf8("cmbInputLayer"))
self.horizontalLayout.addWidget(self.cmbInputLayer)
self.gridLayout.addLayout(self.horizontalLayout, 0, 0, 1, 2)
self.mUpdateExistingGroupBox = QtGui.QGroupBox(FieldsCalculator)
self.mUpdateExistingGroupBox.setFlat(True)
self.mUpdateExistingGroupBox.setCheckable(True)
self.mUpdateExistingGroupBox.setChecked(False)
self.mUpdateExistingGroupBox.setObjectName(_fromUtf8("mUpdateExistingGroupBox"))
self.verticalLayout = QtGui.QVBoxLayout(self.mUpdateExistingGroupBox)
self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
self.mExistingFieldComboBox = QtGui.QComboBox(self.mUpdateExistingGroupBox)
self.mExistingFieldComboBox.setObjectName(_fromUtf8("mExistingFieldComboBox"))
self.verticalLayout.addWidget(self.mExistingFieldComboBox)
self.gridLayout.addWidget(self.mUpdateExistingGroupBox, 2, 1, 1, 1)
self.builder = QgsExpressionBuilderWidget(FieldsCalculator)
self.builder.setAutoFillBackground(False)
self.builder.setObjectName(_fromUtf8("builder"))
self.gridLayout.addWidget(self.builder, 3, 0, 1, 2)
self.horizontalLayout_2 = QtGui.QHBoxLayout()
self.horizontalLayout_2.setObjectName(_fromUtf8("horizontalLayout_2"))
self.label_2 = QtGui.QLabel(FieldsCalculator)
self.label_2.setObjectName(_fromUtf8("label_2"))
self.horizontalLayout_2.addWidget(self.label_2)
self.leOutputFile = QtGui.QLineEdit(FieldsCalculator)
self.leOutputFile.setObjectName(_fromUtf8("leOutputFile"))
self.horizontalLayout_2.addWidget(self.leOutputFile)
self.btnBrowse = QtGui.QToolButton(FieldsCalculator)
self.btnBrowse.setObjectName(_fromUtf8("btnBrowse"))
self.horizontalLayout_2.addWidget(self.btnBrowse)
self.gridLayout.addLayout(self.horizontalLayout_2, 1, 0, 1, 2)
self.progressBar = QtGui.QProgressBar(FieldsCalculator)
#.........这里部分代码省略.........