Class: QgsPropertyOverrideButton¶
- class qgis.gui.QgsPropertyOverrideButton¶
Bases:
PyQt5.QtWidgets.QToolButton
A button for controlling property overrides which may apply to a widget.
QgsPropertyOverrideButton
is designed to be used alongside the QGIS properties framework (QgsProperty
,QgsPropertyDefinition
andQgsPropertyCollection
).It allows users to specify field or expression based overrides which should be applied to a property of an object. Eg, this widget is used for controlling data defined overrides in symbology, labeling and layouts.
New in version 3.0.
QgsPropertyOverrideButton(parent: QWidget = None, layer:
QgsVectorLayer
= None) Constructor for QgsPropertyOverrideButton.- Parameters
parent – parent widget
layer –
associated vector layer
Methods
Returns the full definition description and current definition (internally generated on a contextual basis).
Initialize a newly constructed property button (useful if button was included in a UI layout).
Returns
True
if the button has an active property.- param action
- param event
Returns the property key linked to the button.
Register a sibling
widget
that gets checked when the property is active.Register a sibling
widget
that gets enabled when the property is active, and disabled when the property is inactive.Register an expression context generator class that will be used to retrieve an expression context for the button when required.
Register a sibling
widget
(line edit, text edit) that will receive the property as an expressionRegisters a
widget
which is linked to this button.Register a sibling
widget
that gets visible when the property is active, and hidden when the property is inactive.Set whether the current property override definition is to be used
Sets the widget to reflect the current state of a
QgsProperty
.Set the usage information for the property.
Sets the vector layer associated with the button.
Returns a
QgsProperty
object encapsulating the current state of the widget.Updates list of fields.
Returns usage information for the property.
Returns the data type which the widget will accept.
Returns the vector layer associated with the button.
Signals
Emitted when the activated status of the widget changes [signal]
Emitted when property definition changes [signal]
Emitted when creating a new auxiliary field [signal]
- aboutToShowMenu(self)¶
- actionEvent(self, QActionEvent)¶
- activated¶
Emitted when the activated status of the widget changes [signal]
- Parameters
isActive (bool) –
- changeEvent(self, QEvent)¶
- changed¶
Emitted when property definition changes [signal]
- checkStateSet(self)¶
- childEvent(self, QChildEvent)¶
- closeEvent(self, QCloseEvent)¶
- connectNotify(self, QMetaMethod)¶
- contextMenuEvent(self, QContextMenuEvent)¶
- create(self, window: sip.voidptr = 0, initializeWindow: bool = True, destroyOldWindow: bool = True)¶
- createAuxiliaryField¶
Emitted when creating a new auxiliary field [signal]
- customEvent(self, QEvent)¶
- destroy(self, destroyWindow: bool = True, destroySubWindows: bool = True)¶
- disconnectNotify(self, QMetaMethod)¶
- dragEnterEvent(self, QDragEnterEvent)¶
- dragLeaveEvent(self, QDragLeaveEvent)¶
- dragMoveEvent(self, QDragMoveEvent)¶
- dropEvent(self, QDropEvent)¶
- enterEvent(self, QEvent)¶
- event(self, QEvent) bool ¶
- focusInEvent(self, QFocusEvent)¶
- focusNextChild(self) bool ¶
- focusNextPrevChild(self, bool) bool ¶
- focusOutEvent(self, QFocusEvent)¶
- focusPreviousChild(self) bool ¶
- fullDescription(self) str ¶
Returns the full definition description and current definition (internally generated on a contextual basis).
- Return type
str
- hideEvent(self, QHideEvent)¶
- hitButton(self, QPoint) bool ¶
- init(self, propertyKey: int, property: QgsProperty, definitions: Dict[int, QgsPropertyDefinition], layer: QgsVectorLayer = None, auxiliaryStorageEnabled: bool = False)¶
Initialize a newly constructed property button (useful if button was included in a UI layout).
- Parameters
propertyKey (int) – key for corresponding property
property (QgsProperty) – initial value of associated property to show in widget
definitions (Dict[int) – properties definitions for corresponding collection
layer (
QgsVectorLayer
= None) – associated vector layerauxiliaryStorageEnabled (bool = False) – If
True
, activate the button to store data defined in auxiliary storage
init(self, propertyKey: int, property:
QgsProperty
, definition:QgsPropertyDefinition
, layer:QgsVectorLayer
= None, auxiliaryStorageEnabled: bool = False) Initialize a newly constructed property button (useful if button was included in a UI layout).- Parameters
propertyKey – key for corresponding property
property – initial value of associated property to show in widget
definition – properties definition for button
layer – associated vector layer
auxiliaryStorageEnabled – If
True
, activate the button to store data defined in auxiliary storage
init(self, propertyKey: int, collection:
QgsAbstractPropertyCollection
, definitions: Dict[int, QgsPropertyDefinition], layer:QgsVectorLayer
= None, auxiliaryStorageEnabled: bool = False) Initialize a newly constructed property button (useful if button was included in a UI layout).- Parameters
propertyKey – key for corresponding property
collection – associated property collection
definitions – properties definitions for collection
layer – associated vector layer
auxiliaryStorageEnabled – If
True
, activate the button to store data defined in auxiliary storage
- initPainter(self, QPainter)¶
- initStyleOption(self, QStyleOptionToolButton)¶
- inputMethodEvent(self, QInputMethodEvent)¶
- isActive(self) bool ¶
Returns
True
if the button has an active property.- Return type
bool
- isSignalConnected(self, QMetaMethod) bool ¶
- keyPressEvent(self, QKeyEvent)¶
- keyReleaseEvent(self, QKeyEvent)¶
- leaveEvent(self, QEvent)¶
- Parameters
action (QAction) –
- metric(self, QPaintDevice.PaintDeviceMetric) int ¶
- mouseDoubleClickEvent(self, QMouseEvent)¶
- mouseMoveEvent(self, QMouseEvent)¶
- mousePressEvent(self, QMouseEvent)¶
- mouseReleaseEvent(self, event: QMouseEvent)¶
- Parameters
event (QMouseEvent) –
- moveEvent(self, QMoveEvent)¶
- nativeEvent(self, Union[QByteArray, bytes, bytearray], sip.voidptr) Tuple[bool, int] ¶
- nextCheckState(self)¶
- paintEvent(self, QPaintEvent)¶
- propertyKey(self) int ¶
Returns the property key linked to the button.
- Return type
int
- receivers(self, PYQT_SIGNAL) int ¶
- registerCheckedWidget(self, widget: QWidget, natural: bool = True)¶
Register a sibling
widget
that gets checked when the property is active. ifnatural
isFalse
, widget gets unchecked when the property is active.Note
this should be called after calling
init()
to be correctly initialized.- Parameters
widget (QWidget) –
natural (bool = True) –
- registerEnabledWidget(self, widget: QWidget, natural: bool = True)¶
Register a sibling
widget
that gets enabled when the property is active, and disabled when the property is inactive. ifnatural
isFalse
, widget gets disabled when the property is active, and enabled when the property is inactive.Note
this should be called after calling
init()
to be correctly initialized.- Parameters
widget (QWidget) –
natural (bool = True) –
- registerExpressionContextGenerator(self, generator: QgsExpressionContextGenerator)¶
Register an expression context generator class that will be used to retrieve an expression context for the button when required.
- Parameters
generator (QgsExpressionContextGenerator) –
- registerExpressionWidget(self, widget: QWidget)¶
Register a sibling
widget
(line edit, text edit) that will receive the property as an expressionNote
this should be called after calling
init()
to be correctly initialized.- Parameters
widget (QWidget) –
- registerLinkedWidget(self, widget: QWidget)¶
Registers a
widget
which is linked to this button. The meaning of linked widgets depends on the property type, and the type of linked widget.For color properties, linking a
QgsColorButton
allows the color button to correctly reflect the status of the property when it’s set to follow a project color.New in version 3.6.
- Parameters
widget (QWidget) –
- registerVisibleWidget(self, widget: QWidget, natural: bool = True)¶
Register a sibling
widget
that gets visible when the property is active, and hidden when the property is inactive. ifnatural
isFalse
, widget gets hidden when the property is active, and visible when the property is inactive.Note
this should be called after calling
init()
to be correctly initialized.- Parameters
widget (QWidget) –
natural (bool = True) –
- resizeEvent(self, QResizeEvent)¶
- sender(self) QObject ¶
- senderSignalIndex(self) int ¶
- setActive(self, active: bool)¶
Set whether the current property override definition is to be used
- Parameters
active (bool) –
- setToProperty(self, property: QgsProperty)¶
Sets the widget to reflect the current state of a
QgsProperty
.- Parameters
property (QgsProperty) –
- setUsageInfo(self, info: str)¶
Set the usage information for the property.
See also
- Parameters
info (str) –
- setVectorLayer(self, layer: QgsVectorLayer)¶
Sets the vector layer associated with the button. This controls which fields are displayed within the widget’s pop up menu.
See also
- Parameters
layer (QgsVectorLayer) –
- showEvent(self, QShowEvent)¶
- tabletEvent(self, QTabletEvent)¶
- timerEvent(self, QTimerEvent)¶
- toProperty(self) QgsProperty ¶
Returns a
QgsProperty
object encapsulating the current state of the widget.See also
- Return type
- updateFieldLists(self)¶
Updates list of fields.
New in version 3.0.
- updateMicroFocus(self)¶
- usageInfo(self) str ¶
Returns usage information for the property.
See also
- Return type
str
- validDataType(self) QgsPropertyDefinition.DataType ¶
Returns the data type which the widget will accept. This is used to filter out fields from the associated vector layer to only show fields which are compatible with the property.
- Return type
- vectorLayer(self) QgsVectorLayer ¶
Returns the vector layer associated with the button. This controls which fields are displayed within the widget’s pop up menu.
See also
- Return type
- wheelEvent(self, QWheelEvent)¶