QGIS API Documentation  2.99.0-Master (19b062c)
Signals | Public Member Functions | Protected Member Functions | List of all members
QgsMapToolIdentifyFeature Class Reference

The QgsMapToolIdentifyFeature class is a map tool to identify a feature on a chosen layer. More...

#include <qgsmaptoolidentifyfeature.h>

Inheritance diagram for QgsMapToolIdentifyFeature:
Inheritance graph
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Signals

void featureIdentified (const QgsFeature &)
 
void featureIdentified (QgsFeatureId)
 
- Signals inherited from QgsMapToolIdentify
void changedRasterResults (QList< QgsMapToolIdentify::IdentifyResult > &)
 
void identifyMessage (const QString &)
 
void identifyProgress (int, int)
 
- 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, QgsMessageBar::MessageLevel=QgsMessageBar::INFO)
 emit a message More...
 

Public Member Functions

 QgsMapToolIdentifyFeature (QgsMapCanvas *canvas, QgsVectorLayer *vl=nullptr)
 QgsMapToolIdentifyFeature is a map tool to identify a feature on a chosen layer. More...
 
virtual void canvasReleaseEvent (QgsMapMouseEvent *e) override
 Mouse release event for overriding. Default implementation does nothing. More...
 
void setLayer (QgsVectorLayer *vl)
 change the layer used by the map tool to identify More...
 
- Public Member Functions inherited from QgsMapToolIdentify
 QgsMapToolIdentify (QgsMapCanvas *canvas)
 constructor More...
 
virtual ~QgsMapToolIdentify ()
 
virtual void activate () override
 called when set as currently active map tool More...
 
virtual void canvasMoveEvent (QgsMapMouseEvent *e) override
 Mouse move event for overriding. Default implementation does nothing. More...
 
virtual void canvasPressEvent (QgsMapMouseEvent *e) override
 Mouse press event for overriding. Default implementation does nothing. More...
 
virtual void deactivate () override
 called when map tool is being deactivated More...
 
virtual Flags flags () const override
 Returns the flags for the map tool. More...
 
QList< QgsMapToolIdentify::IdentifyResultidentify (int x, int y, const QList< QgsMapLayer *> &layerList=QList< QgsMapLayer *>(), IdentifyMode mode=DefaultQgsSetting)
 Performs the identification. More...
 
QList< QgsMapToolIdentify::IdentifyResultidentify (int x, int y, IdentifyMode mode, LayerType layerType=AllLayers)
 Performs the identification. More...
 
QgsIdentifyMenuidentifyMenu ()
 return a pointer to the identify menu which will be used in layer selection mode this menu can also be customized More...
 
- Public Member Functions inherited from QgsMapTool
virtual ~QgsMapTool ()
 
QAction * action ()
 Return associated action with map tool or NULL if no action is associated. More...
 
QAbstractButton * button ()
 Return associated button with map tool or NULL 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...
 
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)
 Set 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

virtual void keyPressEvent (QKeyEvent *e) override
 Key event for overriding. Default implementation does nothing. More...
 
- Protected Member Functions inherited from QgsMapToolIdentify
QList< QgsMapToolIdentify::IdentifyResultidentify (int x, int y, IdentifyMode mode, const QList< QgsMapLayer *> &layerList, LayerType layerType=AllLayers)
 Performs the identification. More...
 
bool identifyLayer (QList< QgsMapToolIdentify::IdentifyResult > *results, QgsMapLayer *layer, const QgsPointXY &point, const QgsRectangle &viewExtent, double mapUnitsPerPixel, QgsMapToolIdentify::LayerType layerType=AllLayers)
 Call the right method depending on layer type. More...
 
bool identifyRasterLayer (QList< QgsMapToolIdentify::IdentifyResult > *results, QgsRasterLayer *layer, QgsPointXY point, const QgsRectangle &viewExtent, double mapUnitsPerPixel)
 
bool identifyVectorLayer (QList< QgsMapToolIdentify::IdentifyResult > *results, QgsVectorLayer *layer, const QgsPointXY &point)
 
- 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...
 

Additional Inherited Members

- Public Types inherited from QgsMapToolIdentify
enum  IdentifyMode {
  DefaultQgsSetting = -1, ActiveLayer, TopDownStopAtFirst, TopDownAll,
  LayerSelection
}
 
enum  Type { VectorLayer = 1, RasterLayer = 2, AllLayers = VectorLayer | RasterLayer }
 
- 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...
 
- Public Slots inherited from QgsMapToolIdentify
void formatChanged (QgsRasterLayer *layer)
 
- Static Public Member Functions inherited from QgsMapTool
static double searchRadiusMM ()
 Get search radius in mm. More...
 
static double searchRadiusMU (const QgsRenderContext &context)
 Get search radius in map units for given context. More...
 
static double searchRadiusMU (QgsMapCanvas *canvas)
 Get search radius in map units for given canvas. More...
 
- Protected Attributes inherited from QgsMapToolIdentify
QgsIdentifyMenumIdentifyMenu = 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...
 

Detailed Description

The QgsMapToolIdentifyFeature class is a map tool to identify a feature on a chosen layer.

Once the map tool is enable, user can click on the map canvas to identify a feature. A signal will then be emitted.

Definition at line 28 of file qgsmaptoolidentifyfeature.h.

Constructor & Destructor Documentation

◆ QgsMapToolIdentifyFeature()

QgsMapToolIdentifyFeature::QgsMapToolIdentifyFeature ( QgsMapCanvas canvas,
QgsVectorLayer vl = nullptr 
)

QgsMapToolIdentifyFeature is a map tool to identify a feature on a chosen layer.

Parameters
canvasthe map canvas
vlthe vector layer. The map tool can be initialized without any layer and can be set afterward.

Definition at line 21 of file qgsmaptoolidentifyfeature.cpp.

Member Function Documentation

◆ canvasReleaseEvent()

void QgsMapToolIdentifyFeature::canvasReleaseEvent ( QgsMapMouseEvent e)
overridevirtual

Mouse release event for overriding. Default implementation does nothing.

Reimplemented from QgsMapToolIdentify.

Definition at line 32 of file qgsmaptoolidentifyfeature.cpp.

◆ featureIdentified [1/2]

void QgsMapToolIdentifyFeature::featureIdentified ( const QgsFeature )
signal

◆ featureIdentified [2/2]

void QgsMapToolIdentifyFeature::featureIdentified ( QgsFeatureId  )
signal

◆ keyPressEvent()

void QgsMapToolIdentifyFeature::keyPressEvent ( QKeyEvent *  e)
overrideprotectedvirtual

Key event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 47 of file qgsmaptoolidentifyfeature.cpp.

◆ setLayer()

void QgsMapToolIdentifyFeature::setLayer ( QgsVectorLayer vl)
inline

change the layer used by the map tool to identify

Definition at line 42 of file qgsmaptoolidentifyfeature.h.


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