Marble::StackedTileLoader Class Reference

#include <StackedTileLoader.h>

Inheritance diagram for Marble::StackedTileLoader:

Signals
void	cleared ()
void	tileLoaded (TileId const &tileId)

Public Member Functions
	StackedTileLoader (MergedLayerDecorator *mergedLayerDecorator, QObject *parent=nullptr)
void	cleanupTilehash ()
void	clear ()
const StackedTile *	loadTile (TileId const &stackedTileId)
RenderState	renderState () const
void	resetTilehash ()
void	setVolatileCacheLimit (quint64 kiloBytes)
int	tileColumnCount (int level) const
int	tileCount () const
const GeoSceneAbstractTileProjection *	tileProjection () const
int	tileRowCount (int level) const
QSize	tileSize () const
void	updateTile (TileId const &tileId, QImage const &tileImage)
QList< TileId >	visibleTiles () const
quint64	volatileCacheLimit () const
Public Member Functions inherited from QObject
	QObject (QObject *parent)
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo ()
void	dumpObjectInfo () const const
void	dumpObjectTree ()
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_DISABLE_COPY (Class)
	Q_DISABLE_COPY_MOVE (Class)
	Q_DISABLE_MOVE (Class)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qFindChild (const QObject *obj, const QString &name)
QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)
QList< T >	qFindChildren (const QObject *obj, const QString &name)
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)
QThread *	thread () const const

Additional Inherited Members
Properties inherited from QObject
	objectName
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)
QString	trUtf8 (const char *sourceText, const char *disambiguation, int n)
Public Attributes inherited from QObject
typedef	QObjectList
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Detailed Description

Tile loading from a quad tree.

This class loads tiles into memory. For faster access we keep the tileIDs and their respective pointers to the tiles in a hashtable. The class also contains convenience methods to remove entries from the hashtable and to return more detailed properties about each tile level and their tiles.

Author

Torsten Rahn rahn@.nosp@m.kde..nosp@m.org

Definition at line 44 of file StackedTileLoader.h.

Constructor & Destructor Documentation

StackedTileLoader()

Marble::StackedTileLoader::StackedTileLoader ( MergedLayerDecorator *  mergedLayerDecorator, QObject *  parent = nullptr  )

explicit

Creates a new tile loader.

Parameters

mergedLayerDecorator	The decorator that shall be used to decorate the layer.
parent	The parent widget.

Definition at line 43 of file StackedTileLoader.cpp.

Member Function Documentation

cleanupTilehash()

void Marble::StackedTileLoader::cleanupTilehash

(

)

Cleans up the internal tile hash.

Removes all superfluous tiles from the hash.

Definition at line 85 of file StackedTileLoader.cpp.

clear()

void Marble::StackedTileLoader::clear

(

)

Effectively triggers a reload of all tiles that are currently in use and clears the tile cache in physical memory.

Definition at line 205 of file StackedTileLoader.cpp.

loadTile()

const StackedTile * Marble::StackedTileLoader::loadTile

(

TileId const &

stackedTileId

)

Loads a tile and returns it.

Parameters

stackedTileId

The Id of the requested tile, containing the x and y coordinate and the zoom level.

Definition at line 103 of file StackedTileLoader.cpp.

resetTilehash()

void Marble::StackedTileLoader::resetTilehash

(

)

Resets the internal tile hash.

Definition at line 75 of file StackedTileLoader.cpp.

setVolatileCacheLimit()

void Marble::StackedTileLoader::setVolatileCacheLimit

(

quint64

kiloBytes

)

Set the limit of the volatile (in RAM) cache.

Parameters

kiloBytes

The limit in kilobytes.

Definition at line 167 of file StackedTileLoader.cpp.

tileCount()

int Marble::StackedTileLoader::tileCount

(

)

const

Return the number of tiles in the cache.

Returns

number of tiles in cache

Definition at line 162 of file StackedTileLoader.cpp.

visibleTiles()

QList< TileId > Marble::StackedTileLoader::visibleTiles

(

)

const

Reloads the tiles that are currently displayed.

Definition at line 157 of file StackedTileLoader.cpp.

volatileCacheLimit()

quint64 Marble::StackedTileLoader::volatileCacheLimit

(

)

const

Returns the limit of the volatile (in RAM) cache.

Returns

the cache limit in kilobytes

Definition at line 152 of file StackedTileLoader.cpp.

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

• StackedTileLoader.h
• StackedTileLoader.cpp