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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< IdentifyResult > &)
void identifyMessage (QString)
void identifyProgress (int, int)
- Signals inherited from QgsMapTool
void activated ()
 signal emitted once the map tool is activated
void deactivated ()
 signal emitted once the map tool is deactivated
void messageDiscarded ()
 emit signal to clear previous message
void messageEmitted (QString message, QgsMessageBar::MessageLevel=QgsMessageBar::INFO)
 emit a message

Public Member Functions

 QgsMapToolIdentifyFeature (QgsMapCanvas *canvas, QgsVectorLayer *vl=0)
 QgsMapToolIdentifyFeature is a map tool to identify a feature on a chosen layer.
 ~QgsMapToolIdentifyFeature ()
virtual void canvasReleaseEvent (QMouseEvent *e) override
 Overridden mouse release event.
void setLayer (QgsVectorLayer *vl)
 change the layer used by the map tool to identify
- Public Member Functions inherited from QgsMapToolIdentify
 QgsMapToolIdentify (QgsMapCanvas *canvas)
 constructor
virtual ~QgsMapToolIdentify ()
virtual void activate () override
 called when set as currently active map tool
virtual void canvasMoveEvent (QMouseEvent *e) override
 Overridden mouse move event.
virtual void canvasPressEvent (QMouseEvent *e) override
 Overridden mouse press event.
virtual void deactivate () override
 called when map tool is being deactivated
QList< IdentifyResultidentify (int x, int y, QList< QgsMapLayer * > layerList=QList< QgsMapLayer * >(), IdentifyMode mode=DefaultQgsSetting)
 Performs the identification.
QList< IdentifyResultidentify (int x, int y, IdentifyMode mode, LayerType layerType=AllLayers)
 Performs the identification.
QgsIdentifyMenuidentifyMenu ()
 return a pointer to the identify menu which will be used in layer selection mode this menu can also be customized
- Public Member Functions inherited from QgsMapTool
virtual ~QgsMapTool ()
 virtual destructor
QAction * action ()
 Return associated action with map tool or NULL if no action is associated.
QAbstractButton * button ()
 Return associated button with map tool or NULL if no button is associated.
QgsMapCanvascanvas ()
 returns pointer to the tool's map canvas
virtual void canvasDoubleClickEvent (QMouseEvent *e)
 Mouse double click event for overriding. Default implementation does nothing.
virtual bool isEditTool ()
 Check whether this MapTool performs an edit operation.
virtual bool isTransient ()
 Check whether this MapTool performs a zoom or pan operation.
virtual void keyReleaseEvent (QKeyEvent *e)
 Key event for overriding. Default implementation does nothing.
virtual Q_DECL_DEPRECATED void renderComplete ()
 Called when rendering has finished.
void setAction (QAction *action)
 Use this to associate a QAction to this maptool.
void setButton (QAbstractButton *button)
 Use this to associate a button to this maptool.
virtual void setCursor (QCursor cursor)
 Set a user defined cursor.
QString toolName ()
 Emit map tool changed with the old tool.
virtual void wheelEvent (QWheelEvent *e)
 Mouse wheel event for overriding. Default implementation does nothing.

Protected Member Functions

virtual void keyPressEvent (QKeyEvent *e) override
 Key event for overriding. Default implementation does nothing.
- Protected Member Functions inherited from QgsMapToolIdentify
QList< IdentifyResultidentify (int x, int y, IdentifyMode mode, QList< QgsMapLayer * > layerList, LayerType layerType=AllLayers)
 Performs the identification.
bool identifyLayer (QList< IdentifyResult > *results, QgsMapLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel, LayerType layerType=AllLayers)
 call the right method depending on layer type
bool identifyRasterLayer (QList< IdentifyResult > *results, QgsRasterLayer *layer, QgsPoint point, QgsRectangle viewExtent, double mapUnitsPerPixel)
bool identifyVectorLayer (QList< IdentifyResult > *results, QgsVectorLayer *layer, QgsPoint point)
- Protected Member Functions inherited from QgsMapTool
 QgsMapTool (QgsMapCanvas *canvas)
 constructor takes map canvas as a parameter
QPoint toCanvasCoordinates (const QgsPoint &point)
 transformation from map coordinates to screen coordinates
QgsPoint toLayerCoordinates (QgsMapLayer *layer, const QPoint &point)
 transformation from screen coordinates to layer's coordinates
QgsPoint toLayerCoordinates (QgsMapLayer *layer, const QgsPoint &point)
 transformation from map coordinates to layer's coordinates
QgsRectangle toLayerCoordinates (QgsMapLayer *layer, const QgsRectangle &rect)
 trnasformation of the rect from map coordinates to layer's coordinates
QgsPoint toMapCoordinates (const QPoint &point)
 transformation from screen coordinates to map coordinates
QgsPoint toMapCoordinates (QgsMapLayer *layer, const QgsPoint &point)
 transformation from layer's coordinates to map coordinates (which is different in case reprojection is used)

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 Slots inherited from QgsMapToolIdentify
void formatChanged (QgsRasterLayer *layer)
- Static Public Member Functions inherited from QgsMapTool
static double searchRadiusMM ()
 Get search radius in mm.
static double searchRadiusMU (const QgsRenderContext &context)
 Get search radius in map units for given context.
static double searchRadiusMU (QgsMapCanvas *canvas)
 Get search radius in map units for given canvas.
- Protected Attributes inherited from QgsMapToolIdentify
QgsIdentifyMenumIdentifyMenu

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 26 of file qgsmaptoolidentifyfeature.h.

Constructor & Destructor Documentation

QgsMapToolIdentifyFeature::QgsMapToolIdentifyFeature ( QgsMapCanvas canvas,
QgsVectorLayer vl = 0 
)

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 22 of file qgsmaptoolidentifyfeature.cpp.

QgsMapToolIdentifyFeature::~QgsMapToolIdentifyFeature ( )

Definition at line 34 of file qgsmaptoolidentifyfeature.cpp.

Member Function Documentation

void QgsMapToolIdentifyFeature::canvasReleaseEvent ( QMouseEvent *  e)
overridevirtual

Overridden mouse release event.

Reimplemented from QgsMapToolIdentify.

Definition at line 38 of file qgsmaptoolidentifyfeature.cpp.

void QgsMapToolIdentifyFeature::featureIdentified ( const QgsFeature )
signal
void QgsMapToolIdentifyFeature::featureIdentified ( QgsFeatureId  )
signal
void QgsMapToolIdentifyFeature::keyPressEvent ( QKeyEvent *  e)
overrideprotectedvirtual

Key event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 53 of file qgsmaptoolidentifyfeature.cpp.

void QgsMapToolIdentifyFeature::setLayer ( QgsVectorLayer vl)
inline

change the layer used by the map tool to identify

Definition at line 41 of file qgsmaptoolidentifyfeature.h.


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