KateLayoutCache Class Reference

#include <katelayoutcache.h>

Inheritance diagram for KateLayoutCache:

Public Member Functions
	KateLayoutCache (KateRenderer *renderer, QObject *parent)
bool	acceptDirtyLayouts () const
void	clear ()
int	displayViewLine (const KTextEditor::Cursor virtualCursor, bool limitToVisible=false)
int	lastViewLine (int realLine)
KateLineLayoutPtr	line (const KTextEditor::Cursor realCursor)
KateLineLayoutPtr	line (int realLine, int virtualLine=-1)
void	relayoutLines (int startRealLine, int endRealLine)
void	setAcceptDirtyLayouts (bool accept)
void	setViewWidth (int width)
void	setWrap (bool wrap)
KateTextLayout	textLayout (const KTextEditor::Cursor realCursor)
KateTextLayout	textLayout (uint realLine, int viewLine)
void	updateViewCache (const KTextEditor::Cursor startPos, int newViewLineCount=-1, int viewLinesScrolled=0)
void	viewCacheDebugOutput () const
KTextEditor::Cursor	viewCacheEnd () const
int	viewCacheLineCount () const
KTextEditor::Cursor	viewCacheStart () const
int	viewLine (const KTextEditor::Cursor realCursor)
KateTextLayout &	viewLine (int viewLine)
int	viewLineCount (int realLine)
int	viewWidth () const
bool	wrap () 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

This class handles Kate's caching of layouting information (in KateLineLayout and KateTextLayout).

This information is used primarily by both the view and the renderer.

We outsource the hardcore layouting logic to the renderer, but other than that, this class handles all manipulation of the layout objects.

This is separate from the renderer 1) for clarity 2) so you can have separate caches for separate views of the same document, even for view and printer (if the renderer is made to support rendering onto different targets).

Author

Hamish Rodda <rodda[email protected]@kde[email protected].org>

Definition at line 59 of file katelayoutcache.h.

Member Function Documentation

displayViewLine()

int KateLayoutCache::displayViewLine	(	const KTextEditor::Cursor	virtualCursor,
		bool	limitToVisible = false
	)

Find the view line of the cursor, relative to the display (0 = top line of view, 1 = second line, etc.)

If limitToVisible is true, the function can return -2 for lines below the view. The idea is to get extra information about where the line lies when its out of the view so the clients doesn't have to make second call of this function with limitToVisible = false and potentionaly rerendering the whole document.

Parameters

virtualCursor	cursor position
limitToVisible	if true, limit the search to only visible lines

Returns

line number relative to the display. If limitToVisible is true, then valid values are only positive, negative values are invalid cursors for -1 and -2 for cursor is below the view.

Definition at line 381 of file katelayoutcache.cpp.

line() [1/2]

KateLineLayoutPtr KateLayoutCache::line

(

const KTextEditor::Cursor

realCursor

)

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 314 of file katelayoutcache.cpp.

line() [2/2]

KateLineLayoutPtr KateLayoutCache::line	(	int	realLine,
		int	virtualLine = -1
	)

Returns the KateLineLayout for the specified line.

If one does not exist, it will be created and laid out. Layouts which are not directly part of the view will be kept until the cache is full or until they are invalidated by other means (eg. the text changes).

Parameters

realLine	real line number of the layout to retrieve.
virtualLine	virtual line number. only needed if you think it may have changed (ie. basically internal to KateLayoutCache)

Definition at line 261 of file katelayoutcache.cpp.

textLayout() [1/2]

KateTextLayout KateLayoutCache::textLayout

(

const KTextEditor::Cursor

realCursor

)

Returns the layout describing the text line which is occupied by realCursor.

Definition at line 319 of file katelayoutcache.cpp.

textLayout() [2/2]

KateTextLayout KateLayoutCache::textLayout	(	uint	realLine,
		int	viewLine
	)

Returns the layout of the specified realLine + viewLine.

if viewLine is -1, return the last.

Definition at line 324 of file katelayoutcache.cpp.

viewLine() [1/2]

int KateLayoutCache::viewLine

(

const KTextEditor::Cursor

realCursor

)

This returns the view line upon which realCursor is situated.

The view line is the number of lines in the view from the first line The supplied cursor should be in real lines.

Make sure cursor column and line is valid

Definition at line 360 of file katelayoutcache.cpp.

viewLine() [2/2]

KateTextLayout & KateLayoutCache::viewLine

(

int

viewLine

)

Returns the layout of the corresponding line in the view.

Definition at line 329 of file katelayoutcache.cpp.

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

• katelayoutcache.h
• katelayoutcache.cpp