KFilePreviewGenerator Class Reference

#include <KFilePreviewGenerator>

Inheritance diagram for KFilePreviewGenerator:

Public Slots
void	cancelPreviews ()
void	updateIcons ()

Public Member Functions
	KFilePreviewGenerator (KAbstractViewAdapter *parent, QAbstractProxyModel *model)
	KFilePreviewGenerator (QAbstractItemView *parent)
QStringList	enabledPlugins () const
bool	isPreviewShown () const
void	setEnabledPlugins (const QStringList &list)
void	setPreviewShown (bool show)
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
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 () const const
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 QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
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_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	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	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	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList
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)
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

Generates previews for files of an item view.

Per default a preview is generated for each item. Additionally the clipboard is checked for cut items. The icon state for cut items gets dimmed automatically.

The following strategy is used when creating previews:

• The previews for currently visible items are created before the previews for invisible items.
• If the user changes the visible area by using the scrollbars, all pending previews get paused. As soon as the user stays on the same position for a short delay, the previews are resumed. Also in this case the previews for the visible items are generated first.

Definition at line 42 of file kfilepreviewgenerator.h.

Constructor & Destructor Documentation

KFilePreviewGenerator() [1/2]

KFilePreviewGenerator::KFilePreviewGenerator

(

QAbstractItemView *

parent

)

Parameters

parent

Item view containing the file items where previews should be generated. It is mandatory that the item view specifies an icon size by QAbstractItemView::setIconSize() and that the model of the view (or the source model of the proxy model) is an instance of KDirModel. Otherwise no previews will be generated.

Definition at line 1148 of file kfilepreviewgenerator.cpp.

KFilePreviewGenerator() [2/2]

KFilePreviewGenerator::KFilePreviewGenerator	(	KAbstractViewAdapter *	parent,
		QAbstractProxyModel *	model )

Definition at line 1155 of file kfilepreviewgenerator.cpp.

Member Function Documentation

cancelPreviews

void KFilePreviewGenerator::cancelPreviews ( )

slot

Cancels all pending previews.

Definition at line 1202 of file kfilepreviewgenerator.cpp.

enabledPlugins()

QStringList KFilePreviewGenerator::enabledPlugins

(

)

const

Returns the list of enabled thumbnail plugins.

See also

setEnabledPlugins

Definition at line 1215 of file kfilepreviewgenerator.cpp.

isPreviewShown()

bool KFilePreviewGenerator::isPreviewShown

(

)

const

Definition at line 1183 of file kfilepreviewgenerator.cpp.

setEnabledPlugins()

void KFilePreviewGenerator::setEnabledPlugins

(

const QStringList &

list

)

Sets the list of enabled thumbnail plugins.

Per default all plugins enabled in the KConfigGroup "PreviewSettings" are used.

Note that this method doesn't cause already generated previews to be regenerated.

For a list of available plugins, call KIO::PreviewJob::availableThumbnailerPlugins().

See also

enabledPlugins

Definition at line 1210 of file kfilepreviewgenerator.cpp.

setPreviewShown()

void KFilePreviewGenerator::setPreviewShown

(

bool

show

)

If show is set to true, a preview is generated for each item.

If show is false, the MIME type icon of the item is shown instead. Per default showing the preview is turned on. Note that it is mandatory that the item view specifies an icon size by QAbstractItemView::setIconSize(), otherwise KFilePreviewGenerator::isPreviewShown() will always return false.

Definition at line 1163 of file kfilepreviewgenerator.cpp.

updateIcons

void KFilePreviewGenerator::updateIcons ( )

slot

Updates the icons for all items.

Usually it is only necessary to invoke this method when the icon size of the abstract item view has been changed by QAbstractItemView::setIconSize(). Note that this method should also be invoked if previews have been turned off, as the icons for cut items must be updated when the icon size has changed.

Definition at line 1188 of file kfilepreviewgenerator.cpp.

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

• kfilepreviewgenerator.h
• kfilepreviewgenerator.cpp