QGIS API Documentation  3.8.0-Zanzibar (11aff65)
Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
QgsMapToolAdvancedDigitizing Class Reference

The QgsMapToolAdvancedDigitizing class is a QgsMapTool which gives event directly in map coordinates and allows filtering its events. More...

#include <qgsmaptooladvanceddigitizing.h>

Inheritance diagram for QgsMapToolAdvancedDigitizing:
Inheritance graph
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Public Member Functions

 QgsMapToolAdvancedDigitizing (QgsMapCanvas *canvas, QgsAdvancedDigitizingDockWidget *cadDockWidget)
 Creates an advanced digitizing maptool. More...
 
void activate () override
 Registers this maptool with the cad dock widget. More...
 
virtual void cadCanvasMoveEvent (QgsMapMouseEvent *e)
 Override this method when subclassing this class. More...
 
virtual void cadCanvasPressEvent (QgsMapMouseEvent *e)
 Override this method when subclassing this class. More...
 
virtual void cadCanvasReleaseEvent (QgsMapMouseEvent *e)
 Override this method when subclassing this class. More...
 
QgsAdvancedDigitizingDockWidgetcadDockWidget () const
 
void canvasMoveEvent (QgsMapMouseEvent *e) override
 Catch the mouse move event, filters it, transforms it to map coordinates and send it to virtual method. More...
 
void canvasPressEvent (QgsMapMouseEvent *e) override
 Catch the mouse press event, filters it, transforms it to map coordinates and send it to virtual method. More...
 
void canvasReleaseEvent (QgsMapMouseEvent *e) override
 Catch the mouse release event, filters it, transforms it to map coordinates and send it to virtual method. More...
 
void deactivate () override
 Unregisters this maptool from the cad dock widget. More...
 
bool isAdvancedDigitizingAllowed () const
 Returns whether functionality of advanced digitizing dock widget is currently allowed. More...
 
bool isAutoSnapEnabled () const
 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. More...
 
void setSnapToLayerGridEnabled (bool snapToLayerGridEnabled)
 Enables or disables snap to grid of mouse events. More...
 
bool snapToLayerGridEnabled () const
 Enables or disables snap to grid of mouse events. More...
 
- Public Member Functions inherited from QgsMapToolEdit
 QgsMapToolEdit (QgsMapCanvas *canvas)
 
double defaultZValue () const
 Returns default Z value Use for set Z coordinate to new vertex for 2.5d geometries. More...
 
Flags flags () const override
 Returns the flags for the map tool. More...
 
- Public Member Functions inherited from QgsMapTool
 ~QgsMapTool () override
 
QAction * action ()
 Returns associated action with map tool or nullptr if no action is associated. More...
 
QAbstractButton * button ()
 Returns associated button with map tool or nullptr if no button is associated. More...
 
QgsMapCanvascanvas ()
 returns pointer to the tool's map canvas More...
 
virtual void canvasDoubleClickEvent (QgsMapMouseEvent *e)
 Mouse double-click event for overriding. Default implementation does nothing. More...
 
virtual void clean ()
 convenient method to clean members More...
 
virtual bool gestureEvent (QGestureEvent *e)
 gesture event for overriding. Default implementation does nothing. More...
 
bool isActive () const
 Returns if the current map tool active on the map canvas. More...
 
virtual void keyPressEvent (QKeyEvent *e)
 Key event for overriding. Default implementation does nothing. More...
 
virtual void keyReleaseEvent (QKeyEvent *e)
 Key event for overriding. Default implementation does nothing. More...
 
void setAction (QAction *action)
 Use this to associate a QAction to this maptool. More...
 
void setButton (QAbstractButton *button)
 Use this to associate a button to this maptool. More...
 
virtual void setCursor (const QCursor &cursor)
 Sets a user defined cursor. More...
 
QString toolName ()
 Emit map tool changed with the old tool. More...
 
virtual void wheelEvent (QWheelEvent *e)
 Mouse wheel event for overriding. Default implementation does nothing. More...
 

Protected Member Functions

void setAdvancedDigitizingAllowed (bool allowed)
 Sets whether functionality of advanced digitizing dock widget is currently allowed. More...
 
void setAutoSnapEnabled (bool enabled)
 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. More...
 
- Protected Member Functions inherited from QgsMapToolEdit
int addTopologicalPoints (const QVector< QgsPointXY > &geom)
 Adds vertices to other features to keep topology up to date, e.g. More...
 
QgsGeometryRubberBandcreateGeometryRubberBand (QgsWkbTypes::GeometryType geometryType=QgsWkbTypes::LineGeometry, bool alternativeBand=false) const
 
QgsRubberBandcreateRubberBand (QgsWkbTypes::GeometryType geometryType=QgsWkbTypes::LineGeometry, bool alternativeBand=false)
 Creates a rubber band with the color/line width from the QGIS settings. More...
 
QgsVectorLayercurrentVectorLayer ()
 Returns the current vector layer of the map canvas or 0. More...
 
void notifyNotEditableLayer ()
 Display a timed message bar noting the active vector layer is not editable. More...
 
void notifyNotVectorLayer ()
 Display a timed message bar noting the active layer is not vector. More...
 
- Protected Member Functions inherited from QgsMapTool
 QgsMapTool (QgsMapCanvas *canvas)
 constructor takes map canvas as a parameter More...
 
QPoint toCanvasCoordinates (const QgsPointXY &point)
 transformation from map coordinates to screen coordinates More...
 
QgsPointXY toLayerCoordinates (const QgsMapLayer *layer, QPoint point)
 transformation from screen coordinates to layer's coordinates More...
 
QgsPointXY toLayerCoordinates (const QgsMapLayer *layer, const QgsPointXY &point)
 transformation from map coordinates to layer's coordinates More...
 
QgsRectangle toLayerCoordinates (const QgsMapLayer *layer, const QgsRectangle &rect)
 trnasformation of the rect from map coordinates to layer's coordinates More...
 
QgsPointXY toMapCoordinates (QPoint point)
 transformation from screen coordinates to map coordinates More...
 
QgsPointXY toMapCoordinates (const QgsMapLayer *layer, const QgsPointXY &point)
 transformation from layer's coordinates to map coordinates (which is different in case reprojection is used) More...
 
QgsPoint toMapCoordinates (const QgsMapLayer *layer, const QgsPoint &point)
 transformation from layer's coordinates to map coordinates (which is different in case reprojection is used) More...
 

Protected Attributes

QgsAdvancedDigitizingDockWidgetmCadDockWidget = nullptr
 
- Protected Attributes inherited from QgsMapTool
QAction * mAction = nullptr
 optionally map tool can have pointer to action which will be used to set that action as active More...
 
QAbstractButton * mButton = nullptr
 optionally map tool can have pointer to a button which will be used to set that action as active More...
 
QgsMapCanvasmCanvas = nullptr
 pointer to map canvas More...
 
QCursor mCursor
 cursor used in map tool More...
 
QString mToolName
 translated name of the map tool More...
 

Additional Inherited Members

- Public Types inherited from QgsMapTool
enum  Flag { Transient = 1 << 1, EditTool = 1 << 2, AllowZoomRect = 1 << 3 }
 Enumeration of flags that adjust the way the map tool operates. More...
 
- Signals inherited from QgsMapTool
void activated ()
 signal emitted once the map tool is activated More...
 
void deactivated ()
 signal emitted once the map tool is deactivated More...
 
void messageDiscarded ()
 emit signal to clear previous message More...
 
void messageEmitted (const QString &message, Qgis::MessageLevel=Qgis::Info)
 emit a message More...
 
- Static Public Member Functions inherited from QgsMapTool
static double searchRadiusMM ()
 Gets search radius in mm. More...
 
static double searchRadiusMU (const QgsRenderContext &context)
 Gets search radius in map units for given context. More...
 
static double searchRadiusMU (QgsMapCanvas *canvas)
 Gets search radius in map units for given canvas. More...
 
- Static Protected Member Functions inherited from QgsMapToolEdit
static QColor digitizingFillColor ()
 Returns fill color for rubber bands (from global settings) More...
 
static QColor digitizingStrokeColor ()
 Returns stroke color for rubber bands (from global settings) More...
 
static int digitizingStrokeWidth ()
 Returns stroke width for rubber bands (from global settings) More...
 

Detailed Description

The QgsMapToolAdvancedDigitizing class is a QgsMapTool which gives event directly in map coordinates and allows filtering its events.

Events from QgsMapTool are caught and their QMouseEvent are transformed into QgsMapMouseEvent (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 (

See also
QgsMapToolMapEventFilter).
Note
at the moment, the event filter is used by the CAD tools (
See also
QgsCadDocWidget).
Note
the event filter definition is not exposed in Python API to avoid any unexpected behavior.

Definition at line 36 of file qgsmaptooladvanceddigitizing.h.

Constructor & Destructor Documentation

◆ QgsMapToolAdvancedDigitizing()

QgsMapToolAdvancedDigitizing::QgsMapToolAdvancedDigitizing ( QgsMapCanvas canvas,
QgsAdvancedDigitizingDockWidget cadDockWidget 
)
explicit

Creates an advanced digitizing maptool.

Parameters
canvasThe map canvas on which the tool works
cadDockWidgetThe cad dock widget which will be used to adjust mouse events

Definition at line 24 of file qgsmaptooladvanceddigitizing.cpp.

Member Function Documentation

◆ activate()

void QgsMapToolAdvancedDigitizing::activate ( )
overridevirtual

Registers this maptool with the cad dock widget.

Reimplemented from QgsMapTool.

Reimplemented in QgsMapToolCapture.

Definition at line 120 of file qgsmaptooladvanceddigitizing.cpp.

◆ cadCanvasMoveEvent()

virtual void QgsMapToolAdvancedDigitizing::cadCanvasMoveEvent ( QgsMapMouseEvent e)
inlinevirtual

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
eMouse events prepared by the cad system

Reimplemented in QgsMapToolCapture.

Definition at line 145 of file qgsmaptooladvanceddigitizing.h.

◆ cadCanvasPressEvent()

virtual void QgsMapToolAdvancedDigitizing::cadCanvasPressEvent ( QgsMapMouseEvent e)
inlinevirtual

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
eMouse events prepared by the cad system

Definition at line 123 of file qgsmaptooladvanceddigitizing.h.

◆ cadCanvasReleaseEvent()

virtual void QgsMapToolAdvancedDigitizing::cadCanvasReleaseEvent ( QgsMapMouseEvent e)
inlinevirtual

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
eMouse events prepared by the cad system

Definition at line 134 of file qgsmaptooladvanceddigitizing.h.

◆ cadDockWidget()

QgsAdvancedDigitizingDockWidget* QgsMapToolAdvancedDigitizing::cadDockWidget ( ) const
inline

Definition at line 65 of file qgsmaptooladvanceddigitizing.h.

◆ canvasMoveEvent()

void QgsMapToolAdvancedDigitizing::canvasMoveEvent ( QgsMapMouseEvent e)
overridevirtual

Catch the mouse move event, filters it, transforms it to map coordinates and send it to virtual method.

Reimplemented from QgsMapTool.

Definition at line 94 of file qgsmaptooladvanceddigitizing.cpp.

◆ canvasPressEvent()

void QgsMapToolAdvancedDigitizing::canvasPressEvent ( QgsMapMouseEvent e)
overridevirtual

Catch the mouse press event, filters it, transforms it to map coordinates and send it to virtual method.

Reimplemented from QgsMapTool.

Definition at line 31 of file qgsmaptooladvanceddigitizing.cpp.

◆ canvasReleaseEvent()

void QgsMapToolAdvancedDigitizing::canvasReleaseEvent ( QgsMapMouseEvent e)
overridevirtual

Catch the mouse release event, filters it, transforms it to map coordinates and send it to virtual method.

Reimplemented from QgsMapTool.

Definition at line 54 of file qgsmaptooladvanceddigitizing.cpp.

◆ deactivate()

void QgsMapToolAdvancedDigitizing::deactivate ( )
overridevirtual

Unregisters this maptool from the cad dock widget.

Reimplemented from QgsMapTool.

Reimplemented in QgsMapToolCapture.

Definition at line 135 of file qgsmaptooladvanceddigitizing.cpp.

◆ isAdvancedDigitizingAllowed()

bool QgsMapToolAdvancedDigitizing::isAdvancedDigitizingAllowed ( ) const
inline

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.

See also
setAdvancedDigitizingAllowed()
Since
QGIS 3.0

Definition at line 80 of file qgsmaptooladvanceddigitizing.h.

◆ isAutoSnapEnabled()

bool QgsMapToolAdvancedDigitizing::isAutoSnapEnabled ( ) const
inline

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.

See also
isAutoSnapEnabled()
Since
QGIS 3.0

Definition at line 90 of file qgsmaptooladvanceddigitizing.h.

◆ setAdvancedDigitizingAllowed()

void QgsMapToolAdvancedDigitizing::setAdvancedDigitizingAllowed ( bool  allowed)
inlineprotected

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.

See also
isAdvancedDigitizingAllowed()
Since
QGIS 3.0

Definition at line 100 of file qgsmaptooladvanceddigitizing.h.

◆ setAutoSnapEnabled()

void QgsMapToolAdvancedDigitizing::setAutoSnapEnabled ( bool  enabled)
inlineprotected

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.

See also
isAutoSnapEnabled()
Since
QGIS 3.0

Definition at line 108 of file qgsmaptooladvanceddigitizing.h.

◆ setSnapToLayerGridEnabled()

void QgsMapToolAdvancedDigitizing::setSnapToLayerGridEnabled ( bool  snapToLayerGridEnabled)

Enables or disables snap to grid of mouse events.

The snapping will occur in the layer's CRS.

Since
QGIS 3.4

Definition at line 174 of file qgsmaptooladvanceddigitizing.cpp.

◆ snapToLayerGridEnabled()

bool QgsMapToolAdvancedDigitizing::snapToLayerGridEnabled ( ) const

Enables or disables snap to grid of mouse events.

The snapping will occur in the layer's CRS.

Since
QGIS 3.4

Definition at line 169 of file qgsmaptooladvanceddigitizing.cpp.

Member Data Documentation

◆ mCadDockWidget

QgsAdvancedDigitizingDockWidget* QgsMapToolAdvancedDigitizing::mCadDockWidget = nullptr
protected

Definition at line 111 of file qgsmaptooladvanceddigitizing.h.


The documentation for this class was generated from the following files: