Class: QgsMapToolAdvancedDigitizing¶
-
class
qgis.gui.
QgsMapToolAdvancedDigitizing
(canvas: QgsMapCanvas, cadDockWidget: QgsAdvancedDigitizingDockWidget)¶ Bases:
QgsMapToolEdit
Creates an advanced digitizing maptool
- Parameters
canvas (QgsMapCanvas) – The map canvas on which the tool works
cadDockWidget (QgsAdvancedDigitizingDockWidget) – The cad dock widget which will be used to adjust mouse events
The
QgsMapToolAdvancedDigitizing
class is aQgsMapTool
which gives event directly in map coordinates and allows filtering its events. Events fromQgsMapTool
are caught and their QMouseEvent are transformed intoQgsMapMouseEvent
(with map coordinates). Events are then forwarded to corresponding virtual methods which can be reimplemented in subclasses. An event filter can be set on the map tool to filter and modify the events in map coordinates (QgsMapToolMapEventFilter
).Note
at the moment, the event filter is used by the CAD tools (
QgsCadDocWidget
).Note
the event filter definition is not exposed in Python API to avoid any unexpected behavior.
Methods
Registers this maptool with the cad dock widget
Adds a list of
vertices
to other features to keep topology up to date, e.g.Override this method when subclassing this class.
Override this method when subclassing this class.
Override this method when subclassing this class.
- rtype
QgsAdvancedDigitizingDockWidget
Catch the mouse move event, filters it, transforms it to map coordinates and send it to virtual method
Catch the mouse press event, filters it, transforms it to map coordinates and send it to virtual method
Catch the mouse release event, filters it, transforms it to map coordinates and send it to virtual method
Creates a rubber band with the color/line width from the QGIS settings.
Returns the current vector layer of the map canvas or 0
Unregisters this maptool from the cad dock widget
Returns fill color for rubber bands (from global settings)
Returns stroke color for rubber bands (from global settings)
Returns stroke width for rubber bands (from global settings)
Returns whether functionality of advanced digitizing dock widget is currently allowed.
Returns whether mouse events (press/move/release) should automatically try to snap mouse position (according to the snapping configuration of map canvas) before passing the mouse coordinates to the tool.
Display a timed message bar noting the active vector layer is not editable.
Display a timed message bar noting the active layer is not vector.
Sets whether functionality of advanced digitizing dock widget is currently allowed.
Sets whether mouse events (press/move/release) should automatically try to snap mouse position This method is protected because it should be a decision of the map tool and not from elsewhere.
Enables or disables snap to grid of mouse events.
Enables or disables snap to grid of mouse events.
transformation from map coordinates to screen coordinates
transformation from screen coordinates to layer’s coordinates
transformation from screen coordinates to map coordinates
transformation from layer’s coordinates to map coordinates (which is different in case reprojection is used)
-
activate
(self)¶ Registers this maptool with the cad dock widget
-
addTopologicalPoints
(self, vertices: Iterable[QgsPointXY]) → QgsMapToolEdit.TopologicalResult¶ Adds a list of
vertices
to other features to keep topology up to date, e.g. to neighbouring polygons. Thevertices
list specifies a set of topological points to add, in the layer’s coordinate reference system.Deprecated since version QGIS: 3.12 - will be removed in QGIS 4.0. Use the variant which accepts
QgsPoint
objects instead of QgsPointXY.addTopologicalPoints(self, vertices: Iterable[QgsPoint]) -> QgsMapToolEdit.TopologicalResult Adds a list of
vertices
to other features to keep topology up to date, e.g. to neighbouring polygons. Thevertices
list specifies a set of topological points to add, in the layer’s coordinate reference system.New in version 3.10.
-
cadCanvasMoveEvent
(self, e: QgsMapMouseEvent)¶ Override this method when subclassing this class. This will receive adapted events from the cad system whenever a canvasMoveEvent is triggered and it’s not hidden by the cad’s construction mode.
- Parameters
e (QgsMapMouseEvent) – Mouse events prepared by the cad system
-
cadCanvasPressEvent
(self, e: QgsMapMouseEvent)¶ Override this method when subclassing this class. This will receive adapted events from the cad system whenever a canvasPressEvent is triggered and it’s not hidden by the cad’s construction mode.
- Parameters
e (QgsMapMouseEvent) – Mouse events prepared by the cad system
-
cadCanvasReleaseEvent
(self, e: QgsMapMouseEvent)¶ Override this method when subclassing this class. This will receive adapted events from the cad system whenever a canvasReleaseEvent is triggered and it’s not hidden by the cad’s construction mode.
- Parameters
e (QgsMapMouseEvent) – Mouse events prepared by the cad system
-
cadDockWidget
(self) → QgsAdvancedDigitizingDockWidget¶ - Return type
-
canvasMoveEvent
(self, e: QgsMapMouseEvent)¶ Catch the mouse move event, filters it, transforms it to map coordinates and send it to virtual method
- Parameters
e (QgsMapMouseEvent) –
-
canvasPressEvent
(self, e: QgsMapMouseEvent)¶ Catch the mouse press event, filters it, transforms it to map coordinates and send it to virtual method
- Parameters
e (QgsMapMouseEvent) –
-
canvasReleaseEvent
(self, e: QgsMapMouseEvent)¶ Catch the mouse release event, filters it, transforms it to map coordinates and send it to virtual method
- Parameters
e (QgsMapMouseEvent) –
-
childEvent
(self, QChildEvent)¶
-
connectNotify
(self, QMetaMethod)¶
-
createGeometryRubberBand
(self, geometryType: QgsWkbTypes.GeometryType = QgsWkbTypes.LineGeometry, alternativeBand: bool = False) → QgsGeometryRubberBand¶
-
createRubberBand
(self, geometryType: QgsWkbTypes.GeometryType = QgsWkbTypes.LineGeometry, alternativeBand: bool = False) → QgsRubberBand¶ Creates a rubber band with the color/line width from the QGIS settings. The caller takes ownership of the returned object
- Parameters
geometryType –
alternativeBand – if
True
, rubber band will be set with more transparency and a dash pattern. default isFalse
.
-
currentVectorLayer
(self) → QgsVectorLayer¶ Returns the current vector layer of the map canvas or 0
-
customEvent
(self, QEvent)¶
-
deactivate
(self)¶ Unregisters this maptool from the cad dock widget
-
digitizingFillColor
() → QColor¶ Returns fill color for rubber bands (from global settings)
-
digitizingStrokeColor
() → QColor¶ Returns stroke color for rubber bands (from global settings)
-
digitizingStrokeWidth
() → int¶ Returns stroke width for rubber bands (from global settings)
-
disconnectNotify
(self, QMetaMethod)¶
-
isAdvancedDigitizingAllowed
(self) → bool¶ Returns whether functionality of advanced digitizing dock widget is currently allowed.
Tools may decide to switch this support on/off based on the current state of the map tool. For example, in vertex tool before user picks a vertex to move, advanced digitizing dock widget should be disabled and only enabled once a vertex is being moved. Other map tools may keep advanced digitizing allowed all the time.
If
True
is returned, that does not mean that advanced digitizing is actually active, because it is up to the user to enable/disable it when it is allowed. sa setAdvancedDigitizingAllowed()New in version 3.0.
- Return type
bool
-
isAutoSnapEnabled
(self) → bool¶ Returns whether mouse events (press/move/release) should automatically try to snap mouse position (according to the snapping configuration of map canvas) before passing the mouse coordinates to the tool. This may be desirable default behavior for some map tools, but not for other map tools. It is therefore possible to configure the behavior by the map tool. sa isAutoSnapEnabled()
New in version 3.0.
- Return type
bool
-
isSignalConnected
(self, QMetaMethod) → bool¶
-
notifyNotEditableLayer
(self)¶ Display a timed message bar noting the active vector layer is not editable.
-
notifyNotVectorLayer
(self)¶ Display a timed message bar noting the active layer is not vector.
-
receivers
(self, PYQT_SIGNAL) → int¶
-
sender
(self) → QObject¶
-
senderSignalIndex
(self) → int¶
-
setAdvancedDigitizingAllowed
(self, allowed: bool)¶ Sets whether functionality of advanced digitizing dock widget is currently allowed. This method is protected because it should be a decision of the map tool and not from elsewhere. sa isAdvancedDigitizingAllowed()
New in version 3.0.
- Parameters
allowed (bool) –
-
setAutoSnapEnabled
(self, enabled: bool)¶ Sets whether mouse events (press/move/release) should automatically try to snap mouse position This method is protected because it should be a decision of the map tool and not from elsewhere. sa isAutoSnapEnabled()
New in version 3.0.
- Parameters
enabled (bool) –
-
setSnapToLayerGridEnabled
(self, snapToLayerGridEnabled: bool)¶ Enables or disables snap to grid of mouse events. The snapping will occur in the layer’s CRS.
New in version 3.4.
- Parameters
snapToLayerGridEnabled (bool) –
-
snapToLayerGridEnabled
(self) → bool¶ Enables or disables snap to grid of mouse events. The snapping will occur in the layer’s CRS.
New in version 3.4.
- Return type
bool
-
timerEvent
(self, QTimerEvent)¶
-
toCanvasCoordinates
(self, point: QgsPointXY) → QPoint¶ transformation from map coordinates to screen coordinates
-
toLayerCoordinates
(self, layer: QgsMapLayer, point: QPoint) → QgsPointXY¶ transformation from screen coordinates to layer’s coordinates
toLayerCoordinates(self, layer:
QgsMapLayer
, point:QgsPointXY
) -> QgsPointXY transformation from map coordinates to layer’s coordinatestoLayerCoordinates(self, layer:
QgsMapLayer
, rect:QgsRectangle
) -> QgsRectangle trnasformation of the rect from map coordinates to layer’s coordinates
-
toMapCoordinates
(self, point: QPoint) → QgsPointXY¶ transformation from screen coordinates to map coordinates
toMapCoordinates(self, layer:
QgsMapLayer
, point:QgsPointXY
) -> QgsPointXY transformation from layer’s coordinates to map coordinates (which is different in case reprojection is used)
-
toMapCoordinatesV2
(self, layer: QgsMapLayer, point: QgsPoint) → QgsPoint¶ transformation from layer’s coordinates to map coordinates (which is different in case reprojection is used)
Note
available in Python bindings as toMapCoordinatesV2