#include <ViewZoom.h>

Inheritance diagram for te::layout::ViewZoom:

Public Types
enum	ViewZoomType { TypeIn, TypeOut }
	Defines the zoom type. More...

Public Member Functions
void	applyZoom (const QPointF &point=QPointF())
	Performs the zoom operation on map display, considering the zoom factor, zoom type and the given point. More...

virtual void	setCursor (const QCursor &cursor)
	It sets the tool cursor. More...

void	setZoomType (const ViewZoomType &type)
	Sets the zoom operation type. More...

Initializer Methods
Methods related to instantiation and destruction.
	ViewZoom (View view, const double &zoomFactor=2.0, const ViewZoomType &type=TypeIn, QObject parent=0)
	It constructs a zoom associated with the given map display. More...

virtual	~ViewZoom ()
	Destructor. More...

AbstractTool Methods
Methods related with tool behavior.
virtual bool	eventFilter (QObject watched, QEvent e)
	Filters events if this object has been installed as an event filter for the watched object. More...

virtual bool	mousePressEvent (QMouseEvent *e)
	This event handler can be reimplemented in a concrete tool class to receive mouse press events for the watched object. More...

virtual bool	mouseMoveEvent (QMouseEvent *e)
	This event handler can be reimplemented in a concrete tool class to receive mouse move events for the watched object. More...

virtual bool	mouseReleaseEvent (QMouseEvent *e)
	This event handler can be reimplemented in a concrete tool class to receive mouse release events for the watched object. More...

virtual bool	mouseDoubleClickEvent (QMouseEvent *e)
	This event handler can be reimplemented in a concrete tool class to receive mouse double click events for the watched object. More...

Protected Attributes
QCursor	m_cursor
	The default tool cursor. More...

View *	m_view
	The QGraphicsView associated with the tool. More...

double	m_zoomFactor
	Factor used to zoom. i.e. A factor value of 2.0 (default) will generate a new extent twice (%) bigger or smaller, depending of ZoomType. More...

ViewZoomType	m_zoomType
	Enum that indicates the zoom type. More...

Detailed Description

Definition at line 41 of file ViewZoom.h.

Member Enumeration Documentation

enum te::layout::ViewZoom::ViewZoomType

Defines the zoom type.

Enumerator
TypeIn	Performs the zoom in operation.
TypeOut	Performs the zoom out operation.

Definition at line 50 of file ViewZoom.h.

Constructor & Destructor Documentation

te::layout::ViewZoom::ViewZoom	(	View *	view,
		const double &	zoomFactor = `2.0`,
		const ViewZoomType &	type = `TypeIn`,
		QObject *	parent = `0`
	)

It constructs a zoom associated with the given map display.

Parameters

display The map display associated with the zoom operation.

Note: The class will NOT take the ownership of the given pointer.

Definition at line 32 of file ViewZoom.cpp.

te::layout::ViewZoom::~ViewZoom ( )

virtual

Destructor.

Definition at line 40 of file ViewZoom.cpp.

Member Function Documentation

void te::layout::ViewZoom::applyZoom ( const QPointF & point = QPointF() )

Performs the zoom operation on map display, considering the zoom factor, zoom type and the given point.

Parameters

point A point in world coordinates.

Note: If the given point is not null, the new extent will be centered on this point. Otherwise, the current center will be kepped.

Definition at line 49 of file ViewZoom.cpp.

References te::common::Singleton< Context >::getInstance(), and te::layout::Context::getZoomFactor().

bool te::layout::AbstractViewTool::eventFilter	(	QObject *	watched,
		QEvent *	e
	)

virtualinherited

Filters events if this object has been installed as an event filter for the watched object.

Parameters

watched	The watched object.
event	The last event sent to watched object.

Note: In your reimplementation of this function, if you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.; Here, the default implementation looks for QMouseEvents and call the pure virutal methods defined on AbstractTool class, e.g. mousePressEvent().

Definition at line 44 of file AbstractViewTool.cpp.

bool te::layout::AbstractViewTool::mouseDoubleClickEvent ( QMouseEvent * e )

virtualinherited

This event handler can be reimplemented in a concrete tool class to receive mouse double click events for the watched object.

Parameters

e	The mouse event.

Returns: If you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Note: The AbstractTool will also receive mouse press and mouse release events in addition to the double click event. It is up to the developer to ensure that the application interprets these events correctly.

Definition at line 87 of file AbstractViewTool.cpp.

bool te::layout::AbstractViewTool::mouseMoveEvent ( QMouseEvent * e )

virtualinherited

This event handler can be reimplemented in a concrete tool class to receive mouse move events for the watched object.

Parameters

e	The mouse event.

Returns: If you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Reimplemented in te::layout::ViewRubberBand, and te::layout::ViewZoomArea.

Definition at line 77 of file AbstractViewTool.cpp.

bool te::layout::AbstractViewTool::mousePressEvent ( QMouseEvent * e )

virtualinherited

This event handler can be reimplemented in a concrete tool class to receive mouse press events for the watched object.

Parameters

e	The mouse event.

Returns: If you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Reimplemented in te::layout::ViewRubberBand, te::layout::ViewZoomClick, and te::layout::ViewZoomArea.

Definition at line 72 of file AbstractViewTool.cpp.

bool te::layout::AbstractViewTool::mouseReleaseEvent ( QMouseEvent * e )

virtualinherited

This event handler can be reimplemented in a concrete tool class to receive mouse release events for the watched object.

Parameters

e	The mouse event.

Returns: If you want to filter the event out, i.e. stop it being handled further, return true; otherwise return false.

Reimplemented in te::layout::ViewRubberBand, and te::layout::ViewZoomArea.

Definition at line 82 of file AbstractViewTool.cpp.

void te::layout::AbstractViewTool::setCursor ( const QCursor & cursor )

virtualinherited

It sets the tool cursor.

Parameters

cursor The cursor that will be used during the tool operation.

Definition at line 92 of file AbstractViewTool.cpp.

Referenced by te::layout::ViewZoomArea::ViewZoomArea(), and te::layout::ViewZoomClick::ViewZoomClick().

void te::layout::ViewZoom::setZoomType ( const ViewZoomType & type )

Sets the zoom operation type.

Parameters

type	The zoom operation type - ZoomIn \| ZoomOut;

Definition at line 44 of file ViewZoom.cpp.

Member Data Documentation

QCursor te::layout::AbstractViewTool::m_cursor

protectedinherited

The default tool cursor.

Definition at line 141 of file AbstractViewTool.h.

View* te::layout::AbstractViewTool::m_view

protectedinherited

The QGraphicsView associated with the tool.

Definition at line 140 of file AbstractViewTool.h.

Referenced by te::layout::AbstractViewTool::AbstractViewTool().

double te::layout::ViewZoom::m_zoomFactor

protected

Factor used to zoom. i.e. A factor value of 2.0 (default) will generate a new extent twice (%) bigger or smaller, depending of ZoomType.

Definition at line 93 of file ViewZoom.h.

ViewZoomType te::layout::ViewZoom::m_zoomType

protected

Enum that indicates the zoom type.

Definition at line 94 of file ViewZoom.h.

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

C:/TL5_2015_release/terralib5/src/terralib/layout/qt/core/tools/ViewZoom.h
C:/TL5_2015_release/terralib5/src/terralib/layout/qt/core/tools/ViewZoom.cpp

Public Types

Public Member Functions

Protected Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation