#include <maplayer.h>

Inheritance diagram for MapLayer:

Public Types
enum	LayerType { MapLayer, GeometryLayer }
	sets the type of a layer, see Layer class doc for further information More...

Public Slots
void	setVisible (bool visible)
	if visible is true, the layer is made visible More...

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

Public Member Functions
void	addGeometry (Geometry *geometry)
	adds a Geometry object to this Layer More...

void	clearGeometries (bool qDeleteObject=false)
	removes all Geometry objects from this Layer More...

bool	containsGeometry (Geometry *geometry)
	returns true if Layer contains geometry More...

QList< Geometry * > &	getGeometries ()
	returns all Geometry objects from this Layer More...

bool	isVisible () const
	return true if the layer is visible More...

QString	layername () const
	returns the layer's name More...

Layer::LayerType	layertype () const
	returns the LayerType of the Layer More...

MapAdapter *	mapadapter ()
	returns the layer´s MapAdapter More...

	MapLayer (QString layername, MapAdapter *mapadapter, bool takeevents=true)
	MapLayer constructor. More...

void	removeGeometry (Geometry *geometry, bool qDeleteObject=false)
	removes the Geometry object from this Layer More...

void	sendGeometryToBack (Geometry *geometry)
	allow moving a geometry to the top of the list (drawing last) More...

void	sendGeometryToFront (Geometry *geometry)
	allow moving a geometry to the top of the list (drawing last) More...

Detailed Description

MapLayer class.

There are two different layer types:

MapLayer: Displays Maps, but also Geometries. The configuration for displaying maps have to be done in the MapAdapter
GeometryLayer: Only displays Geometry objects.

MapLayers also can display Geometry objects. The difference to the GeometryLayer is the repainting. Objects that are added to a MapLayer are "baken" on the map. This means, when you change it´s position for example the changes are not visible until a new offscreen image has been drawn. If you have "static" Geometries which won´t change their position this is fine. But if you want to change the objects position or pen you should use a GeometryLayer. Those are repainted immediately on changes.

Author: Kai Winter kaiwi.nosp@m.nter.nosp@m.@gmx..nosp@m.de

Member Enumeration Documentation

enum LayerType

inherited

sets the type of a layer, see Layer class doc for further information

Enumerator
MapLayer	uses the MapAdapter to display maps, only gets refreshed when a new offscreen image is needed
GeometryLayer	gets refreshed everytime when a geometry changes

Constructor & Destructor Documentation

MapLayer	(	QString	layername,
		MapAdapter *	mapadapter,
		bool	takeevents = `true`
	)

MapLayer constructor.

This is used to construct a map layer.

Parameters

layername	The name of the Layer
mapadapter	The MapAdapter which does coordinate translation and Query-String-Forming
takeevents	Should the Layer receive MouseEvents? This is set to true by default. Setting it to false could be something like a "speed up hint"

Member Function Documentation

void addGeometry ( Geometry * geometry )

inherited

adds a Geometry object to this Layer

Please notice the different LayerTypes (MapLayer and GeometryLayer) and the differences

Parameters

geometry the new Geometry

References Geometry::boundingBox(), and Layer::containsGeometry().

void clearGeometries ( bool qDeleteObject = false )

inherited

removes all Geometry objects from this Layer

This method removes all Geometry objects from this Layer. NOTE: this method does not delete the object unless qDeleteObject is set

Parameters

qDeleteObject cleans up memory of object after removal

bool containsGeometry ( Geometry * geometry )

inherited

returns true if Layer contains geometry

This method returns if a Geometry objects is on this Layer.

Referenced by Layer::addGeometry().

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 layer emits a signal for every clicked geometry

Parameters

geometry	The clicked Geometry
point	The coordinate (in widget coordinates) of the click

QList< Geometry * > & getGeometries ( )

inherited

returns all Geometry objects from this Layer

This method removes all Geometry objects from this Layer.

Returns: a list of geometries that are on this Layer

bool isVisible ( ) const

inherited

return true if the layer is visible

Returns: if the layer is visible

QString layername ( ) const

inherited

returns the layer's name

Returns: the name of this layer

Layer::LayerType layertype ( ) const

inherited

returns the LayerType of the Layer

There are two LayerTypes: MapLayer and GeometryLayer

Returns: the LayerType of this Layer

MapAdapter * mapadapter ( )

inherited

returns the layer´s MapAdapter

This method returns the MapAdapter of this Layer, which can be useful to do coordinate transformations.

Returns: the MapAdapter which us used by this Layer

void removeGeometry	(	Geometry *	geometry,
		bool	qDeleteObject = `false`
	)

inherited

removes the Geometry object from this Layer

This method removes a Geometry object from this Layer. NOTE: this method does not delete the object unless qDeleteObject is set

Parameters

qDeleteObject cleans up memory of object after removal

References Geometry::boundingBox().

void sendGeometryToBack ( Geometry * geometry )

inherited

allow moving a geometry to the top of the list (drawing last)

This method re-order the Geometry objects so the desired geometry is drawn first and under all other geometries

void sendGeometryToFront ( Geometry * geometry )

inherited

allow moving a geometry to the top of the list (drawing last)

This method re-order the Geometry objects so the desired geometry is drawn last and visible above all geometries

void setVisible ( bool visible )

slotinherited

if visible is true, the layer is made visible

Parameters

visible if the layer should be visible

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

maplayer.h
maplayer.cpp

Public Types

Public Slots

Signals

Public Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation