Draws a directed arrow (showing orientation) into the map. More...

#include <arrowpoint.h>

Inheritance diagram for ArrowPoint:

Public Types
enum	Alignment { TopLeft, TopRight, TopMiddle, BottomLeft, BottomRight, BottomMiddle, Middle }
	sets where the point should be aligned More...

Signals
void	geometryClicked (Geometry *geometry, QPoint point)
	This signal is emitted when a Geometry is clicked. More...

void	positionChanged (Geometry *geom)
	A Geometry emits this signal, when its position gets changed. More...

Public Member Functions
	ArrowPoint (qreal x, qreal y, int sideLength, qreal heading, QString name=QString(), Alignment alignment=Middle, QPen *pen=0)

virtual QRectF	boundingBox ()
	returns the bounding box of the point More...

QPointF	coordinate () const
	returns the coordinate of the point More...

bool	Equals (Geometry *geom)

qreal	getHeading () const
	gets the current heading of the arrow

bool	isVisible () const
	returns true if this Geometry is visible More...

qreal	latitude () const
	returns the latitude of the point More...

qreal	longitude () const
	returns the longitude of the point More...

QString	name () const
	returns the name of this Geometry More...

Geometry *	parentGeometry () const
	returns the parent Geometry of this Geometry More...

QPen *	pen () const
	returns the QPen which is used on drawing More...

QPixmap	pixmap ()
	returns the pixmap of the point More...

void	setBaselevel (int zoomlevel)
	Sets the zoom level on which the points pixmap gets displayed on full size. More...

void	setHeading (qreal heading)
	sets the heading of the arrow and redraws it in the new orientation More...

void	setMaxsize (QSize maxsize)
	sets a maximal size for the pixmap More...

void	setMinsize (QSize minsize)
	sets a minimal size for the pixmap More...

void	setName (QString name)
	sets the name of the geometry More...

virtual void	setPen (QPen *pen)
	sets the QPen which is used for drawing the arrow More...

QString	toString ()
	returns a String representation of this Geometry More...

QWidget *	widget ()
	returns the widget of the point More...

Protected Member Functions
virtual bool	Touches (Point click, const MapAdapter mapadapter)
	returns true if the given Point touches this Point More...

Detailed Description

Draws a directed arrow (showing orientation) into the map.

This is a convenience class for Point. It configures the pixmap of a Point to draw an arrow in a specific direction. A QPen could be used to change the color or line-width of the arrow

Author: Jeffery MacEachern j.mac.nosp@m.each.nosp@m.ern@g.nosp@m.mail.nosp@m..com

Member Enumeration Documentation

enum Alignment

inherited

sets where the point should be aligned

Enumerator
TopLeft	Align on TopLeft
TopRight	Align on TopRight
TopMiddle	Align on TopLeft
BottomLeft	Align on BottomLeft
BottomRight	Align on BottomRight
BottomMiddle	Align on BottomMiddle
Middle	Align on Middle

Constructor & Destructor Documentation

ArrowPoint	(	qreal	x,
		qreal	y,
		int	sideLength,
		qreal	heading,
		QString	name = `QString()`,
		Alignment	alignment = `Middle`,
		QPen *	pen = `0`
	)

Parameters

x	longitude
y	latitude
sideLength	side length of the arrow's bounding box (square)
heading	compass heading determining direction that arrow faces, measured in degrees clockwise from North
name	name of the arrow point
alignment	alignment (Middle or TopLeft)
pen	QPen for drawing

References Geometry::pen().

Member Function Documentation

QRectF boundingBox ( )

virtualinherited

returns the bounding box of the point

The Bounding contains the coordinate of the point and its size. The size is set, if the point contains a pixmap or a widget

Returns: the bounding box of the point

Implements Geometry.

References Point::latitude(), and Point::longitude().

QPointF coordinate ( ) const

inherited

returns the coordinate of the point

The x component of the returned QPointF is the longitude value, the y component the latitude

Returns: the coordinate of a point

Referenced by MapControl::setView(), and Point::Touches().

bool Equals ( Geometry * geom )

inherited

returns true if the given Geometry is equal to this Geometry not implemented yet!

Parameters

geom	The Geometry to be tested

Returns: true if the given Geometry is equal to this

void geometryClicked	(	Geometry *	geometry,
		QPoint	point
	)

signalinherited

This signal is emitted when a Geometry is clicked.

A Geometry is clickable, if the containing layer is clickable. The objects emits a signal if it gets clicked

Parameters

geometry	The clicked Geometry
point	-unused-

Referenced by Point::Touches().

bool isVisible ( ) const

inherited

returns true if this Geometry is visible

Returns: true if this Geometry is visible

Referenced by Point::Touches().

qreal latitude ( ) const

inherited

returns the latitude of the point

Returns: the latitude of the point

Referenced by LineString::boundingBox(), and Point::boundingBox().

qreal longitude ( ) const

inherited

returns the longitude of the point

Returns: the longitude of the point

Referenced by LineString::boundingBox(), and Point::boundingBox().

QString name ( ) const

inherited

returns the name of this Geometry

Returns: the name of this Geometry

Referenced by Geometry::setName().

Geometry * parentGeometry ( ) const

inherited

returns the parent Geometry of this Geometry

A LineString is a composition of many Points. This methods returns the parent (the LineString) of a Point

Returns: the parent Geometry of this Geometry

QPen * pen ( ) const

inherited

returns the QPen which is used on drawing

The pen is set depending on the Geometry. A CirclePoint for example takes one with the constructor.

Returns: the QPen which is used for drawing

Referenced by ArrowPoint::ArrowPoint(), CirclePoint::CirclePoint(), LineString::LineString(), ArrowPoint::setPen(), and CirclePoint::setPen().

QPixmap pixmap ( )

inherited

returns the pixmap of the point

Returns: the pixmap of the point

Referenced by FixedImageOverlay::FixedImageOverlay(), and ImagePoint::ImagePoint().

void positionChanged ( Geometry * geom )

signalinherited

A Geometry emits this signal, when its position gets changed.

Parameters

geom	the Geometry

void setBaselevel ( int zoomlevel )

inherited

Sets the zoom level on which the points pixmap gets displayed on full size.

Use this method to set a zoom level on which the pixmap gets displayed with its real size. On zoomlevels below it will be displayed smaller, and on zoom levels thereover it will be displayed larger

See also: setMinsize, setMaxsize

Parameters

zoomlevel the zoomlevel on which the point will be displayed on full size

void setHeading ( qreal heading )

sets the heading of the arrow and redraws it in the new orientation

Parameters

heading new heading

void setMaxsize ( QSize maxsize )

inherited

sets a maximal size for the pixmap

When the point´s pixmap should change its size on zooming, this method sets the maximal size.

See also: setBaselevel

Parameters

maxsize the maximal size which the pixmap should have

void setMinsize ( QSize minsize )

inherited

sets a minimal size for the pixmap

When the point's pixmap should change its size on zooming, this method sets the minimal size.

See also: setBaselevel

Parameters

minsize the minimal size which the pixmap should have

void setName ( QString name )

inherited

sets the name of the geometry

Parameters

name	the new name of the geometry

References Geometry::name().

void setPen ( QPen * pen )

virtual

sets the QPen which is used for drawing the arrow

A QPen can be used to modify the look of the drawn arrow

Parameters

pen	the QPen which should be used for drawing

See also: http://doc.trolltech.com/4.3/qpen.html

Reimplemented from Geometry.

References Geometry::pen().

QString toString ( )

inherited

returns a String representation of this Geometry

not implemented yet!

Returns: a String representation of this Geometry

bool Touches	(	Point *	click,
		const MapAdapter *	mapadapter
	)

protectedvirtualinherited

returns true if the given Point touches this Point

The collision detection checks for the bounding rectangulars.

Parameters

geom	the other point which should be tested on collision
mapadapter	the mapadapter which is used for calculations

Returns

Implements Geometry.

References Point::coordinate(), MapAdapter::coordinateToDisplay(), Geometry::geometryClicked(), and Geometry::isVisible().

QWidget * widget ( )

inherited

returns the widget of the point

Returns: the widget of the point

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

arrowpoint.h
arrowpoint.cpp

Public Types

Signals

Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation