This class implements a concrete tool to measure operation (distance, area, and angle). More...

#include <Measure.h>

Inheritance diagram for te::qt::widgets::Measure:

Public Types
enum	MeasureType { Distance, Area, Angle }
	Defines the measure type measured by this tool. More...

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

Initializer Methods
Methods related to instantiation and destruction.
	Measure (MapDisplay display, const MeasureType &measureType, const QCursor &cursor, QObject parent=0)
	It constructs a measure tool associated with the given map display. More...

	~Measure ()
	Destructor. More...

AbstractTool Methods
Methods related with tool behavior.
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...

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...

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...

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...

bool	keyPressEvent (QKeyEvent *e)
	This event handler can be reimplemented in a concrete tool class to receive key press events for the watched object. 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...

Protected Attributes
QBrush	m_brush
	The brush used to draw the path. More...

std::vector< te::gm::Coord2D >	m_coords
	The coord list managed by the measure tool. More...

QCursor	m_curCursor
	The current mapdisplay cursor. More...

QCursor	m_cursor
	The default tool cursor. More...

MapDisplay *	m_display
	The map display associated with the tool. More...

bool	m_isFinished
	A flag that indicates if the operations was finished. More...

te::gm::Coord2D	m_lastPos
	The last position captured on mouse move event. More...

MeasureType	m_measureType
	The measure type. More...

QPen	m_pen
	The pen used to draw the path. More...

std::string	m_unit
	The unit symbol for the measure. More...

Private Slots
void	onExtentChanged ()

Private Member Functions
double	calculateAngle (te::gm::LineString *line) const

double	calculateLength (te::gm::LineString *line) const

void	clear ()

void	drawGeometry ()

void	drawLine (Canvas &canvas)

void	drawPolygon (Canvas &canvas)

void	drawText (Canvas &canvas, const std::string &text, te::gm::Point *p)

Detailed Description

This class implements a concrete tool to measure operation (distance, area, and angle).

Definition at line 66 of file Measure.h.

Member Enumeration Documentation

◆ MeasureType

enum te::qt::widgets::Measure::MeasureType

Defines the measure type measured by this tool.

Enumerator
Distance	Distance.
Area	Area.
Angle	Angle.

Definition at line 77 of file Measure.h.

Constructor & Destructor Documentation

◆ Measure()

te::qt::widgets::Measure::Measure	(	MapDisplay *	display,
		const MeasureType &	measureType,
		const QCursor &	cursor,
		QObject *	parent = `0`
	)

It constructs a measure tool associated with the given map display.

Parameters

display	The map display associated with the tool.
parent	The tool's parent.

Note: The tool will NOT take the ownership of the given pointers.

◆ ~Measure()

te::qt::widgets::Measure::~Measure ( )

Destructor.

Member Function Documentation

◆ calculateAngle()

double te::qt::widgets::Measure::calculateAngle ( te::gm::LineString * line ) const

private

◆ calculateLength()

double te::qt::widgets::Measure::calculateLength ( te::gm::LineString * line ) const

private

◆ clear()

void te::qt::widgets::Measure::clear ( )

private

◆ drawGeometry()

void te::qt::widgets::Measure::drawGeometry ( )

private

◆ drawLine()

void te::qt::widgets::Measure::drawLine ( Canvas & canvas )

private

◆ drawPolygon()

void te::qt::widgets::Measure::drawPolygon ( Canvas & canvas )

private

◆ drawText()

void te::qt::widgets::Measure::drawText	(	Canvas &	canvas,
		const std::string &	text,
		te::gm::Point *	p
	)

private

◆ eventFilter()

virtual bool te::qt::widgets::AbstractTool::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().

Reimplemented in te::edit::GeometriesUpdateTool, te::qt::widgets::ZoomKeyboard, and te::qt::widgets::ZoomWheel.

◆ keyPressEvent()

bool te::qt::widgets::Measure::keyPressEvent ( QKeyEvent * e )

virtual

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

Parameters

e	The key event.

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

Reimplemented from te::qt::widgets::AbstractTool.

◆ mouseDoubleClickEvent()

bool te::qt::widgets::Measure::mouseDoubleClickEvent ( QMouseEvent * e )

virtual

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.

Reimplemented from te::qt::widgets::AbstractTool.

◆ mouseMoveEvent()

bool te::qt::widgets::Measure::mouseMoveEvent ( QMouseEvent * e )

virtual

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 from te::qt::widgets::AbstractTool.

◆ mousePressEvent()

bool te::qt::widgets::Measure::mousePressEvent ( QMouseEvent * e )

virtual

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 from te::qt::widgets::AbstractTool.

◆ mouseReleaseEvent()

bool te::qt::widgets::Measure::mouseReleaseEvent ( QMouseEvent * e )

virtual

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 from te::qt::widgets::AbstractTool.

◆ onExtentChanged

void te::qt::widgets::Measure::onExtentChanged ( )

privateslot

◆ setCursor()

virtual void te::qt::widgets::AbstractTool::setCursor ( const QCursor & cursor )

virtualinherited

It sets the tool cursor.

Parameters

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

Reimplemented in te::edit::GeometriesUpdateTool.

Member Data Documentation

◆ m_brush

QBrush te::qt::widgets::Measure::m_brush

protected

The brush used to draw the path.

Definition at line 147 of file Measure.h.

◆ m_coords

std::vector<te::gm::Coord2D> te::qt::widgets::Measure::m_coords

protected

The coord list managed by the measure tool.

Definition at line 143 of file Measure.h.

◆ m_curCursor

QCursor te::qt::widgets::AbstractTool::m_curCursor

protectedinherited

The current mapdisplay cursor.

Definition at line 173 of file AbstractTool.h.

◆ m_cursor

QCursor te::qt::widgets::AbstractTool::m_cursor

protectedinherited

The default tool cursor.

Definition at line 172 of file AbstractTool.h.

◆ m_display

MapDisplay* te::qt::widgets::AbstractTool::m_display

protectedinherited

The map display associated with the tool.

Definition at line 171 of file AbstractTool.h.

◆ m_isFinished

bool te::qt::widgets::Measure::m_isFinished

protected

A flag that indicates if the operations was finished.

Definition at line 148 of file Measure.h.

◆ m_lastPos

te::gm::Coord2D te::qt::widgets::Measure::m_lastPos

protected

The last position captured on mouse move event.

Definition at line 144 of file Measure.h.

◆ m_measureType

MeasureType te::qt::widgets::Measure::m_measureType

protected

The measure type.

Definition at line 145 of file Measure.h.

◆ m_pen

QPen te::qt::widgets::Measure::m_pen

protected

The pen used to draw the path.

Definition at line 146 of file Measure.h.

◆ m_unit

std::string te::qt::widgets::Measure::m_unit

protected

The unit symbol for the measure.

Definition at line 149 of file Measure.h.

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

/home/castejon/castejon_files/develop/terralib5/git_master/src/terralib/qt/widgets/tools/Measure.h

Public Types

Public Member Functions

Protected Attributes

Private Slots

Private Member Functions

Detailed Description

Member Enumeration Documentation

◆ MeasureType

Constructor & Destructor Documentation

◆ Measure()

◆ ~Measure()

Member Function Documentation

◆ calculateAngle()

◆ calculateLength()

◆ clear()

◆ drawGeometry()

◆ drawLine()

◆ drawPolygon()

◆ drawText()

◆ eventFilter()

◆ keyPressEvent()

◆ mouseDoubleClickEvent()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ onExtentChanged

◆ setCursor()

Member Data Documentation

◆ m_brush

◆ m_coords

◆ m_curCursor

◆ m_cursor

◆ m_display

◆ m_isFinished

◆ m_lastPos

◆ m_measureType

◆ m_pen

◆ m_unit