QSyntaxHighlighterPrivate Class Reference

Inheritance diagram for QSyntaxHighlighterPrivate:

Public Functions
void	_q_delayedRehighlight ()
void	_q_reformatBlocks (int from, int charsRemoved, int charsAdded)
void	applyFormatChanges ()
	QSyntaxHighlighterPrivate ()
void	reformatBlock (const QTextBlock &block)
void	reformatBlocks (int from, int charsRemoved, int charsAdded)
void	rehighlight (QTextCursor &cursor, QTextCursor::MoveOperation operation)
Public Functions inherited from QObjectPrivate
void	_q_reregisterTimers (void *pointer)
void	addConnection (int signal, Connection *c)
void	cleanConnectionLists ()
void	connectNotify (const char *signal)
void	deleteChildren ()
void	disconnectNotify (const char *signal)
bool	isSender (const QObject *receiver, const char *signal) const
bool	isSignalConnected (uint signalIdx) const
	Returns true if the signal with index signal_index from object sender is connected. More...
void	moveToThread_helper ()
	QObjectPrivate (int version=QObjectPrivateVersion)
QObjectList	receiverList (const char *signal) const
QObjectList	senderList () const
void	setParent_helper (QObject *)
void	setThreadData_helper (QThreadData *currentData, QThreadData *targetData)
int	signalIndex (const char *signalName) const
	Returns the signal index used in the internal connectionLists vector. More...
virtual	~QObjectPrivate ()
Public Functions inherited from QObjectData
virtual	~QObjectData ()=0

Public Variables
QTextBlock	currentBlock
QPointer< QTextDocument >	doc
QVector< QTextCharFormat >	formatChanges
bool	inReformatBlocks
bool	rehighlightPending
Public Variables inherited from QObjectPrivate
union {
QObject *   currentChildBeingDeleted
QAbstractDeclarativeData *   declarativeData
};
quint32	connectedSignals [2]
QObjectConnectionListVector *	connectionLists
Sender *	currentSender
QList< QPointer< QObject > >	eventFilters
ExtraData *	extraData
QString	objectName
Connection *	senders
QAtomicPointer< QtSharedPointer::ExternalRefCountData >	sharedRefcount
QThreadData *	threadData
void *	unused
Public Variables inherited from QObjectData
uint	blockSig: 1
QObjectList	children
uint	hasGuards: 1
uint	inEventHandler: 1
uint	inThreadChangeEvent: 1
uint	isWidget: 1
QMetaObject *	metaObject
uint	ownObjectName: 1
QObject *	parent
uint	pendTimer: 1
int	postedEvents
QObject *	q_ptr
uint	receiveChildEvents: 1
uint	sendChildEvents: 1
uint	unused: 22
uint	wasDeleted: 1

Additional Inherited Members
Public Types inherited from QObjectPrivate
typedef void(*	StaticMetaCallFunction) (QObject *, QMetaObject::Call, int, void **)
Static Public Functions inherited from QObjectPrivate
static void	clearGuards (QObject *)
static QObjectPrivate *	get (QObject *o)
static void	resetCurrentSender (QObject *receiver, Sender *currentSender, Sender *previousSender)
static Sender *	setCurrentSender (QObject *receiver, Sender *sender)
static void	signalSignature (const QMetaMethod &signal, QVarLengthArray< char > *result)

Detailed Description

Definition at line 58 of file qsyntaxhighlighter.cpp.

Constructors and Destructors

QSyntaxHighlighterPrivate()

QSyntaxHighlighterPrivate::QSyntaxHighlighterPrivate ( )

inline

Definition at line 62 of file qsyntaxhighlighter.cpp.

        : rehighlightPending(false), inReformatBlocks(false)
    {}

Functions

_q_delayedRehighlight()

void QSyntaxHighlighterPrivate::_q_delayedRehighlight ( )

inline

Definition at line 82 of file qsyntaxhighlighter.cpp.

                                        {
        if (!rehighlightPending)
            return;
        rehighlightPending = false;
        q_func()->rehighlight();
    }

_q_reformatBlocks()

void QSyntaxHighlighterPrivate::_q_reformatBlocks	(	int	from,
		int	charsRemoved,
		int	charsAdded
	)

Definition at line 180 of file qsyntaxhighlighter.cpp.

{
    if (!inReformatBlocks)
        reformatBlocks(from, charsRemoved, charsAdded);
}

applyFormatChanges()

void QSyntaxHighlighterPrivate::applyFormatChanges

(

)

Definition at line 96 of file qsyntaxhighlighter.cpp.

Referenced by _q_delayedRehighlight(), and reformatBlock().

{
    bool formatsChanged = false;

    QTextLayout *layout = currentBlock.layout();

    QList<QTextLayout::FormatRange> ranges = layout->additionalFormats();

    const int preeditAreaStart = layout->preeditAreaPosition();
    const int preeditAreaLength = layout->preeditAreaText().length();

    if (preeditAreaLength != 0) {
        QList<QTextLayout::FormatRange>::Iterator it = ranges.begin();
        while (it != ranges.end()) {
            if (it->start >= preeditAreaStart
                && it->start + it->length <= preeditAreaStart + preeditAreaLength) {
                ++it;
            } else {
                it = ranges.erase(it);
                formatsChanged = true;
            }
        }
    } else if (!ranges.isEmpty()) {
        ranges.clear();
        formatsChanged = true;
    }

    QTextCharFormat emptyFormat;

    QTextLayout::FormatRange r;
    r.start = -1;

    int i = 0;
    while (i < formatChanges.count()) {

        while (i < formatChanges.count() && formatChanges.at(i) == emptyFormat)
            ++i;

        if (i >= formatChanges.count())
            break;

        r.start = i;
        r.format = formatChanges.at(i);

        while (i < formatChanges.count() && formatChanges.at(i) == r.format)
            ++i;

        if (i >= formatChanges.count())
            break;

        r.length = i - r.start;

        if (preeditAreaLength != 0) {
            if (r.start >= preeditAreaStart)
                r.start += preeditAreaLength;
            else if (r.start + r.length >= preeditAreaStart)
                r.length += preeditAreaLength;
        }

        ranges << r;
        formatsChanged = true;
        r.start = -1;
    }

    if (r.start != -1) {
        r.length = formatChanges.count() - r.start;

        if (preeditAreaLength != 0) {
            if (r.start >= preeditAreaStart)
                r.start += preeditAreaLength;
            else if (r.start + r.length >= preeditAreaStart)
                r.length += preeditAreaLength;
        }

        ranges << r;
        formatsChanged = true;
    }

    if (formatsChanged) {
        layout->setAdditionalFormats(ranges);
        doc->markContentsDirty(currentBlock.position(), currentBlock.length());
    }
}

reformatBlock()

void QSyntaxHighlighterPrivate::reformatBlock

(

const QTextBlock &

block

)

Definition at line 216 of file qsyntaxhighlighter.cpp.

Referenced by reformatBlocks().

{
    Q_Q(QSyntaxHighlighter);

    Q_ASSERT_X(!currentBlock.isValid(), "QSyntaxHighlighter::reformatBlock()", "reFormatBlock() called recursively");

    currentBlock = block;

    formatChanges.fill(QTextCharFormat(), block.length() - 1);
    q->highlightBlock(block.text());
    applyFormatChanges();

    currentBlock = QTextBlock();
}

reformatBlocks()

void QSyntaxHighlighterPrivate::reformatBlocks	(	int	from,
		int	charsRemoved,
		int	charsAdded
	)

Definition at line 186 of file qsyntaxhighlighter.cpp.

Referenced by _q_reformatBlocks(), and rehighlight().

{
    rehighlightPending = false;

    QTextBlock block = doc->findBlock(from);
    if (!block.isValid())
        return;

    int endPosition;
    QTextBlock lastBlock = doc->findBlock(from + charsAdded + (charsRemoved > 0 ? 1 : 0));
    if (lastBlock.isValid())
        endPosition = lastBlock.position() + lastBlock.length();
    else
        endPosition = doc->docHandle()->length();

    bool forceHighlightOfNextBlock = false;

    while (block.isValid() && (block.position() < endPosition || forceHighlightOfNextBlock)) {
        const int stateBeforeHighlight = block.userState();

        reformatBlock(block);

        forceHighlightOfNextBlock = (block.userState() != stateBeforeHighlight);

        block = block.next();
    }

    formatChanges.clear();
}

rehighlight()

void QSyntaxHighlighterPrivate::rehighlight ( QTextCursor &  cursor, QTextCursor::MoveOperation  operation  )

inline

Definition at line 72 of file qsyntaxhighlighter.cpp.

                                                                                     {
        inReformatBlocks = true;
        cursor.beginEditBlock();
        int from = cursor.position();
        cursor.movePosition(operation);
        reformatBlocks(from, 0, cursor.position() - from);
        cursor.endEditBlock();
        inReformatBlocks = false;
    }

Properties

currentBlock

QTextBlock QSyntaxHighlighterPrivate::currentBlock

Definition at line 91 of file qsyntaxhighlighter.cpp.

Referenced by applyFormatChanges(), and reformatBlock().

doc

QPointer<QTextDocument> QSyntaxHighlighterPrivate::doc

Definition at line 66 of file qsyntaxhighlighter.cpp.

Referenced by applyFormatChanges(), and reformatBlocks().

formatChanges

QVector<QTextCharFormat> QSyntaxHighlighterPrivate::formatChanges

Definition at line 90 of file qsyntaxhighlighter.cpp.

Referenced by applyFormatChanges(), reformatBlock(), and reformatBlocks().

inReformatBlocks

bool QSyntaxHighlighterPrivate::inReformatBlocks

Definition at line 93 of file qsyntaxhighlighter.cpp.

Referenced by _q_reformatBlocks(), and rehighlight().

rehighlightPending

bool QSyntaxHighlighterPrivate::rehighlightPending

Definition at line 92 of file qsyntaxhighlighter.cpp.

Referenced by _q_delayedRehighlight(), and reformatBlocks().

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

• /src/gui/text/qsyntaxhighlighter.cpp