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QgsMapToolEmitPoint Class Reference

A map tool that simply emits a point when clicking on the map. More...

#include <qgsmaptoolemitpoint.h>

Inheritance diagram for QgsMapToolEmitPoint:
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Collaboration diagram for QgsMapToolEmitPoint:
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Signals

void canvasClicked (const QgsPoint &point, Qt::MouseButton button)
 signal emitted on canvas click

Public Member Functions

 QgsMapToolEmitPoint (QgsMapCanvas *canvas)
 constructor
virtual void canvasMoveEvent (QMouseEvent *e)
 Overridden mouse move event.
virtual void canvasPressEvent (QMouseEvent *e)
 Overridden mouse press event - emits the signal.
virtual void canvasReleaseEvent (QMouseEvent *e)
 Overridden mouse release event.
- Public Member Functions inherited from QgsMapTool
virtual ~QgsMapTool ()
 virtual destructor
virtual void canvasDoubleClickEvent (QMouseEvent *e)
 Mouse double click event for overriding. Default implementation does nothing.
virtual void wheelEvent (QWheelEvent *e)
 Mouse wheel event for overriding.
virtual void keyPressEvent (QKeyEvent *e)
 Key event for overriding. Default implementation does nothing.
virtual void keyReleaseEvent (QKeyEvent *e)
 Key event for overriding.
virtual void renderComplete ()
 Called when rendering has finished. Default implementation does nothing.
void setAction (QAction *action)
 Use this to associate a QAction to this maptool.
QAction * action ()
 Return associated action with map tool or NULL if no action is associated.
void setButton (QAbstractButton *button)
 Use this to associate a button to this maptool.
QAbstractButton * button ()
 Return associated button with map tool or NULL if no button is associated.
virtual void setCursor (QCursor cursor)
 Set a user defined cursor.
virtual bool isTransient ()
 Check whether this MapTool performs a zoom or pan operation.
virtual bool isEditTool ()
 Check whether this MapTool performs an edit operation.
virtual void activate ()
 called when set as currently active map tool
virtual void deactivate ()
 called when map tool is being deactivated
QgsMapCanvascanvas ()
 returns pointer to the tool's map canvas

Additional Inherited Members

- Protected Member Functions inherited from QgsMapTool
 QgsMapTool (QgsMapCanvas *canvas)
 constructor takes map canvas as a parameter
QgsPoint toMapCoordinates (const QPoint &point)
 transformation from screen coordinates to map 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
QgsPoint toMapCoordinates (QgsMapLayer *layer, const QgsPoint &point)
 transformation from layer's coordinates to map coordinates (which is different in case reprojection is used)
QgsRectangle toLayerCoordinates (QgsMapLayer *layer, const QgsRectangle &rect)
 trnasformation of the rect from map coordinates to layer's coordinates
QPoint toCanvasCoordinates (const QgsPoint &point)
 transformation from map coordinates to screen coordinates
- Protected Attributes inherited from QgsMapTool
QgsMapCanvasmCanvas
 pointer to map canvas
QCursor mCursor
 cursor used in map tool
QAction * mAction
 optionally map tool can have pointer to action which will be used to set that action as active
QAbstractButton * mButton
 optionally map tool can have pointer to a button which will be used to set that action as active

Detailed Description

A map tool that simply emits a point when clicking on the map.

Connecting a slot to its canvasClicked() signal will let you implement custom behaviour for the passed in point.

Definition at line 29 of file qgsmaptoolemitpoint.h.

Constructor & Destructor Documentation

QgsMapToolEmitPoint::QgsMapToolEmitPoint ( QgsMapCanvas canvas)

constructor

Definition at line 22 of file qgsmaptoolemitpoint.cpp.

Member Function Documentation

void QgsMapToolEmitPoint::canvasClicked ( const QgsPoint point,
Qt::MouseButton  button 
)
signal

signal emitted on canvas click

Referenced by canvasPressEvent().

void QgsMapToolEmitPoint::canvasMoveEvent ( QMouseEvent *  e)
virtual

Overridden mouse move event.

Reimplemented from QgsMapTool.

Definition at line 27 of file qgsmaptoolemitpoint.cpp.

void QgsMapToolEmitPoint::canvasPressEvent ( QMouseEvent *  e)
virtual

Overridden mouse press event - emits the signal.

Reimplemented from QgsMapTool.

Definition at line 32 of file qgsmaptoolemitpoint.cpp.

References canvasClicked(), and QgsMapTool::toMapCoordinates().

void QgsMapToolEmitPoint::canvasReleaseEvent ( QMouseEvent *  e)
virtual

Overridden mouse release event.

Reimplemented from QgsMapTool.

Definition at line 38 of file qgsmaptoolemitpoint.cpp.


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