Plot tool for zooming into and out of the plot. More...

#include <qgsplottoolzoom.h>

Inheritance diagram for QgsPlotToolZoom:

[legend]

Public Member Functions
	QgsPlotToolZoom (QgsPlotCanvas *canvas)
	Constructor for QgsPlotToolZoom, with the associated canvas.

	~QgsPlotToolZoom () override

void	deactivate () override
	Called when the tool is being deactivated.

void	keyPressEvent (QKeyEvent *event) override
	Key press event for overriding.

void	keyReleaseEvent (QKeyEvent *event) override
	Key release event for overriding.

void	plotMoveEvent (QgsPlotMouseEvent *event) override
	Mouse move event for overriding.

void	plotPressEvent (QgsPlotMouseEvent *event) override
	Mouse press event for overriding.

void	plotReleaseEvent (QgsPlotMouseEvent *event) override
	Mouse release event for overriding.

Public Member Functions inherited from QgsPlotTool
	~QgsPlotTool () override

QAction *	action ()
	Returns the action associated with the tool or `nullptr` if no action is associated.

virtual void	activate ()
	Called when the tool is set as the currently active plot tool.

QgsPlotCanvas *	canvas () const
	Returns the tool's plot canvas.

virtual bool	canvasToolTipEvent (QHelpEvent *event)
	Tooltip event for overriding.

virtual Qgis::PlotToolFlags	flags () const
	Returns the flags for the plot tool.

virtual bool	gestureEvent (QGestureEvent *event)
	Gesture event for overriding.

bool	isActive () const
	Returns `true` if this tool is the current tool active on the plot canvas.

virtual void	plotDoubleClickEvent (QgsPlotMouseEvent *event)
	Mouse double-click event for overriding.

virtual bool	populateContextMenuWithEvent (QMenu menu, QgsPlotMouseEvent event)
	Allows the tool to populate and customize the given menu, prior to showing it in response to a right-mouse button click.

void	setAction (QAction *action)
	Associates an action with this tool.

void	setCursor (const QCursor &cursor)
	Sets a user defined cursor for use when the tool is active.

QString	toolName () const
	Returns a user-visible, translated name for the tool.

virtual void	wheelEvent (QWheelEvent *event)
	Mouse wheel event for overriding.

Protected Member Functions
virtual QRectF	constrainBounds (const QRectF &sceneBounds) const
	Applies constraints to the overall bounds of the rubber band.

virtual QPointF	constrainMovePoint (QPointF scenePoint) const
	Applies constraints to a move point of the zoom rubber band.

virtual QPointF	constrainStartPoint (QPointF scenePoint) const
	Applies constraints to the start point of the zoom rubber band.

virtual void	zoomInClickOn (QPointF scenePoint)
	Handles a zoom out click on the given point.

virtual void	zoomOutClickOn (QPointF scenePoint)
	Handles a zoom out click on the given point.

Protected Member Functions inherited from QgsPlotTool
	QgsPlotTool (QgsPlotCanvas *canvas, const QString &name)
	Constructor takes a plot canvas as a parameter.

bool	isClickAndDrag (QPoint startViewPoint, QPoint endViewPoint) const
	Returns `true` if a mouse press/release operation which started at startViewPoint and ended at endViewPoint should be considered a "click and drag".

QgsPointXY	toCanvasCoordinates (const QgsPoint &point) const
	Converts a point in map coordinates to the associated canvas point.

QgsPoint	toMapCoordinates (const QgsPointXY &point) const
	Converts a point on the canvas to the associated map coordinate.

Protected Attributes
bool	mMarqueeZoom = false
	Will be `true` will marquee zoom operation is in progress.

QPoint	mMousePressStartPos
	Start position for mouse drag.

QPointF	mRubberBandStartPos
	Start position for drag, in scene coordinates.

Protected Attributes inherited from QgsPlotTool
QPointer< QAction >	mAction
	Optional action associated with tool.

QgsPlotCanvas *	mCanvas = nullptr
	The pointer to the canvas.

QCursor	mCursor = Qt::ArrowCursor
	Cursor used by tool.

QString	mToolName
	Translated name of the map tool.

Additional Inherited Members
Signals inherited from QgsPlotTool
void	activated ()
	Emitted when the tool is activated.

void	deactivated ()
	Emitted when the tool is deactivated.

Static Protected Member Functions inherited from QgsPlotTool
static QPointF	constrainPointToRect (QPointF point, const QRectF &rect)
	Constrains a point to force it to fall within the specified rectangle.

Detailed Description

Plot tool for zooming into and out of the plot.

Since: QGIS 3.26

Definition at line 34 of file qgsplottoolzoom.h.

Constructor & Destructor Documentation

◆ QgsPlotToolZoom()

QgsPlotToolZoom::QgsPlotToolZoom ( QgsPlotCanvas * canvas )

Constructor for QgsPlotToolZoom, with the associated canvas.

Definition at line 24 of file qgsplottoolzoom.cpp.

◆ ~QgsPlotToolZoom()

QgsPlotToolZoom::~QgsPlotToolZoom ( )

overridedefault

Member Function Documentation

◆ constrainBounds()

QRectF QgsPlotToolZoom::constrainBounds ( const QRectF & sceneBounds ) const

protectedvirtual

Applies constraints to the overall bounds of the rubber band.

Note: Not available in Python bindings

Reimplemented in QgsPlotToolXAxisZoom.

Definition at line 140 of file qgsplottoolzoom.cpp.

◆ constrainMovePoint()

QPointF QgsPlotToolZoom::constrainMovePoint ( QPointF scenePoint ) const

protectedvirtual

Applies constraints to a move point of the zoom rubber band.

Note: Not available in Python bindings

Reimplemented in QgsPlotToolXAxisZoom.

Definition at line 135 of file qgsplottoolzoom.cpp.

◆ constrainStartPoint()

QPointF QgsPlotToolZoom::constrainStartPoint ( QPointF scenePoint ) const

protectedvirtual

Applies constraints to the start point of the zoom rubber band.

Note: Not available in Python bindings

Reimplemented in QgsPlotToolXAxisZoom.

Definition at line 130 of file qgsplottoolzoom.cpp.

◆ deactivate()

void QgsPlotToolZoom::deactivate ( )

overridevirtual

Called when the tool is being deactivated.

Reimplemented from QgsPlotTool.

Definition at line 120 of file qgsplottoolzoom.cpp.

◆ keyPressEvent()

void QgsPlotToolZoom::keyPressEvent ( QKeyEvent * event )

overridevirtual

Key press event for overriding.

The default implementation does nothing. When subclasses implement this method and have acted on the event, they must explicitly call event->accept() to prevent the event from being passed on to other widgets.

Reimplemented from QgsPlotTool.

Definition at line 94 of file qgsplottoolzoom.cpp.

◆ keyReleaseEvent()

void QgsPlotToolZoom::keyReleaseEvent ( QKeyEvent * event )

overridevirtual

Key release event for overriding.

The default implementation does nothing. When subclasses implement this method and have acted on the event, they must explicitly call event->accept() to prevent the event from being passed on to other widgets.

Reimplemented from QgsPlotTool.

Definition at line 107 of file qgsplottoolzoom.cpp.

◆ plotMoveEvent()

void QgsPlotToolZoom::plotMoveEvent ( QgsPlotMouseEvent * event )

overridevirtual

Mouse move event for overriding.

The default implementation does nothing. When subclasses implement this method and have acted on the event, they must explicitly call event->accept() to prevent the event from being passed on to other widgets.

Reimplemented from QgsPlotTool.

Definition at line 60 of file qgsplottoolzoom.cpp.

◆ plotPressEvent()

void QgsPlotToolZoom::plotPressEvent ( QgsPlotMouseEvent * event )

overridevirtual

Mouse press event for overriding.

The default implementation does nothing. When subclasses implement this method and have acted on the event, they must explicitly call event->accept() to prevent the event from being passed on to other widgets.

Reimplemented from QgsPlotTool.

Definition at line 35 of file qgsplottoolzoom.cpp.

◆ plotReleaseEvent()

void QgsPlotToolZoom::plotReleaseEvent ( QgsPlotMouseEvent * event )

overridevirtual

Mouse release event for overriding.

The default implementation does nothing. When subclasses implement this method and have acted on the event, they must explicitly call event->accept() to prevent the event from being passed on to other widgets.

Reimplemented from QgsPlotTool.

Definition at line 71 of file qgsplottoolzoom.cpp.

◆ zoomInClickOn()

void QgsPlotToolZoom::zoomInClickOn ( QPointF scenePoint )

protectedvirtual

Handles a zoom out click on the given point.

Note: Not available in Python bindings

Reimplemented in QgsPlotToolXAxisZoom.

Definition at line 152 of file qgsplottoolzoom.cpp.

◆ zoomOutClickOn()

void QgsPlotToolZoom::zoomOutClickOn ( QPointF scenePoint )

protectedvirtual

Handles a zoom out click on the given point.

Note: Not available in Python bindings

Reimplemented in QgsPlotToolXAxisZoom.

Definition at line 145 of file qgsplottoolzoom.cpp.

Member Data Documentation

◆ mMarqueeZoom

bool QgsPlotToolZoom::mMarqueeZoom = false

protected

Will be true will marquee zoom operation is in progress.

Definition at line 92 of file qgsplottoolzoom.h.

◆ mMousePressStartPos

QPoint QgsPlotToolZoom::mMousePressStartPos

protected

Start position for mouse drag.

Definition at line 97 of file qgsplottoolzoom.h.

◆ mRubberBandStartPos

QPointF QgsPlotToolZoom::mRubberBandStartPos

protected

Start position for drag, in scene coordinates.

Definition at line 100 of file qgsplottoolzoom.h.

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

/build/qgis-3.40.0+99sid/src/gui/plot/qgsplottoolzoom.h
/build/qgis-3.40.0+99sid/src/gui/plot/qgsplottoolzoom.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsPlotToolZoom()

◆ ~QgsPlotToolZoom()

Member Function Documentation

◆ constrainBounds()

◆ constrainMovePoint()

◆ constrainStartPoint()

◆ deactivate()

◆ keyPressEvent()

◆ keyReleaseEvent()

◆ plotMoveEvent()

◆ plotPressEvent()

◆ plotReleaseEvent()

◆ zoomInClickOn()

◆ zoomOutClickOn()

Member Data Documentation

◆ mMarqueeZoom

◆ mMousePressStartPos

◆ mRubberBandStartPos