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

#include <qgsmaptoolzoom.h>

Inheritance diagram for QgsMapToolZoom:

Public Member Functions
	QgsMapToolZoom (QgsMapCanvas *canvas, bool zoomOut)
	constructor More...

	~QgsMapToolZoom () override

void	canvasMoveEvent (QgsMapMouseEvent *e) override
	Mouse move event for overriding. Default implementation does nothing. More...

void	canvasPressEvent (QgsMapMouseEvent *e) override
	Mouse press event for overriding. Default implementation does nothing. More...

void	canvasReleaseEvent (QgsMapMouseEvent *e) override
	Mouse release event for overriding. Default implementation does nothing. More...

void	deactivate () override
	called when map tool is being deactivated More...

Flags	flags () const override
	Returns the flags for the map tool. More...

void	keyPressEvent (QKeyEvent *e) override
	Key event for overriding. Default implementation does nothing. More...

void	keyReleaseEvent (QKeyEvent *e) override
	Key event for overriding. Default implementation does nothing. 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...

virtual void	activate ()
	called when set as currently active map tool More...

QAbstractButton *	button ()
	Returns associated button with map tool or `nullptr` if no button is associated. More...

QgsMapCanvas *	canvas ()
	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...

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 Attributes
bool	mDragging
	Flag to indicate a map canvas drag operation is taking place. More...

int	mMinPixelZoom = 20

bool	mNativeZoomOut
	native tool More...

QgsRubberBand *	mRubberBand = nullptr

QCursor	mZoomInCursor

bool	mZoomOut
	indicates whether we're zooming in or out More...

QCursor	mZoomOutCursor

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...

QgsMapCanvas *	mCanvas = 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...

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 32 of file qgsmaptoolzoom.cpp.

◆ ~QgsMapToolZoom()

QgsMapToolZoom::~QgsMapToolZoom ( )

override

Definition at line 45 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 51 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 78 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 87 of file qgsmaptoolzoom.cpp.

◆ deactivate()

void QgsMapToolZoom::deactivate ( )

overridevirtual

called when map tool is being deactivated

Reimplemented from QgsMapTool.

Definition at line 137 of file qgsmaptoolzoom.cpp.

◆ flags()

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.

◆ keyPressEvent()

void QgsMapToolZoom::keyPressEvent ( QKeyEvent * e )

overridevirtual

Key event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 154 of file qgsmaptoolzoom.cpp.

◆ keyReleaseEvent()

void QgsMapToolZoom::keyReleaseEvent ( QKeyEvent * e )

overridevirtual

Key event for overriding. Default implementation does nothing.

Reimplemented from QgsMapTool.

Definition at line 162 of file qgsmaptoolzoom.cpp.

Member Data Documentation

◆ mDragging

bool QgsMapToolZoom::mDragging

protected

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

Definition at line 59 of file qgsmaptoolzoom.h.

◆ mMinPixelZoom

int QgsMapToolZoom::mMinPixelZoom = 20

protected

Definition at line 51 of file qgsmaptoolzoom.h.

◆ mNativeZoomOut

bool QgsMapToolZoom::mNativeZoomOut

protected

native tool

Definition at line 56 of file qgsmaptoolzoom.h.

◆ mRubberBand

QgsRubberBand* QgsMapToolZoom::mRubberBand = nullptr

protected

Definition at line 61 of file qgsmaptoolzoom.h.

◆ mZoomInCursor

QCursor QgsMapToolZoom::mZoomInCursor

protected

Definition at line 64 of file qgsmaptoolzoom.h.

◆ mZoomOut

bool QgsMapToolZoom::mZoomOut

protected

indicates whether we're zooming in or out

Definition at line 54 of file qgsmaptoolzoom.h.

◆ mZoomOutCursor

QCursor QgsMapToolZoom::mZoomOutCursor

protected

Definition at line 63 of file qgsmaptoolzoom.h.

◆ mZoomRect

QRect QgsMapToolZoom::mZoomRect

protected

stores actual zoom rect

Definition at line 49 of file qgsmaptoolzoom.h.

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

/tmp/buildd/qgis-3.8.0+99unstable/src/gui/qgsmaptoolzoom.h
/tmp/buildd/qgis-3.8.0+99unstable/src/gui/qgsmaptoolzoom.cpp

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsMapToolZoom()

◆ ~QgsMapToolZoom()

Member Function Documentation

◆ canvasMoveEvent()

◆ canvasPressEvent()

◆ canvasReleaseEvent()

◆ deactivate()

◆ flags()

◆ keyPressEvent()

◆ keyReleaseEvent()

Member Data Documentation

◆ mDragging

◆ mMinPixelZoom

◆ mNativeZoomOut

◆ mRubberBand

◆ mZoomInCursor

◆ mZoomOut

◆ mZoomOutCursor

◆ mZoomRect