QGIS API Documentation  2.99.0-Master (25b0421)
Public Member Functions | Protected Attributes | List of all members
QgsMapToolZoom Class Reference

A map tool for zooming into the map. More...

#include <qgsmaptoolzoom.h>

Inheritance diagram for QgsMapToolZoom:
Inheritance graph
[legend]

Public Member Functions

 QgsMapToolZoom (QgsMapCanvas *canvas, bool zoomOut)
 constructor More...
 
 ~QgsMapToolZoom ()
 
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 canvasReleaseEvent (QgsMapMouseEvent *e) override
 Mouse release 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...
 
- Public Member Functions inherited from QgsMapTool
virtual ~QgsMapTool ()
 
QAction * action ()
 Return associated action with map tool or NULL if no action is associated. More...
 
virtual void activate ()
 called when set as currently active map tool 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 bool gestureEvent (QGestureEvent *e)
 gesture event for overriding. Default implementation does nothing. 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)
 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 Attributes

bool mDragging
 Flag to indicate a map canvas drag operation is taking place. More...
 
QgsRubberBandmRubberBand = nullptr
 
bool mZoomOut
 indicates whether we're zooming in or out More...
 
QRect mZoomRect
 stores actual zoom rect More...
 
- 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, QgsMessageBar::MessageLevel=QgsMessageBar::INFO)
 emit a message More...
 
- 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 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...
 

Detailed Description

A map tool for zooming into the map.

See also
QgsMapTool

Definition at line 30 of file qgsmaptoolzoom.h.

Constructor & Destructor Documentation

◆ QgsMapToolZoom()

QgsMapToolZoom::QgsMapToolZoom ( QgsMapCanvas canvas,
bool  zoomOut 
)

constructor

Definition at line 30 of file qgsmaptoolzoom.cpp.

◆ ~QgsMapToolZoom()

QgsMapToolZoom::~QgsMapToolZoom ( )

Definition at line 42 of file qgsmaptoolzoom.cpp.

Member Function Documentation

◆ canvasMoveEvent()

void QgsMapToolZoom::canvasMoveEvent ( QgsMapMouseEvent e)
overridevirtual

Mouse move event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 48 of file qgsmaptoolzoom.cpp.

◆ canvasPressEvent()

void QgsMapToolZoom::canvasPressEvent ( QgsMapMouseEvent e)
overridevirtual

Mouse press event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 72 of file qgsmaptoolzoom.cpp.

◆ canvasReleaseEvent()

void QgsMapToolZoom::canvasReleaseEvent ( QgsMapMouseEvent e)
overridevirtual

Mouse release event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 81 of file qgsmaptoolzoom.cpp.

◆ deactivate()

void QgsMapToolZoom::deactivate ( )
overridevirtual

called when map tool is being deactivated

Reimplemented from QgsMapTool.

Definition at line 135 of file qgsmaptoolzoom.cpp.

◆ flags()

virtual Flags QgsMapToolZoom::flags ( ) const
inlineoverridevirtual

Returns the flags for the map tool.

Since
QGIS 2.16

Reimplemented from QgsMapTool.

Definition at line 39 of file qgsmaptoolzoom.h.

Member Data Documentation

◆ mDragging

bool QgsMapToolZoom::mDragging
protected

Flag to indicate a map canvas drag operation is taking place.

Definition at line 53 of file qgsmaptoolzoom.h.

◆ mRubberBand

QgsRubberBand* QgsMapToolZoom::mRubberBand = nullptr
protected

Definition at line 55 of file qgsmaptoolzoom.h.

◆ mZoomOut

bool QgsMapToolZoom::mZoomOut
protected

indicates whether we're zooming in or out

Definition at line 50 of file qgsmaptoolzoom.h.

◆ mZoomRect

QRect QgsMapToolZoom::mZoomRect
protected

stores actual zoom rect

Definition at line 47 of file qgsmaptoolzoom.h.


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