Viadeo Twitter Google Bookmarks ! Facebook Digg del.icio.us MySpace Yahoo MyWeb Blinklist Netvouz Reddit Simpy StumbleUpon Bookmarks Windows Live Favorites 
Logo Documentation Qt ·  Page d'accueil  ·  Toutes les classes  ·  Toutes les fonctions  ·  Vues d'ensemble  · 

QTextFragment Class Reference

The QTextFragment class holds a piece of text in a QTextDocument with a single QTextCharFormat. More...

 #include <QTextFragment>

Note: All functions in this class are reentrant.

Public Functions

QTextFragment ()
QTextFragment ( const QTextFragment & other )
QTextCharFormat charFormat () const
int charFormatIndex () const
bool contains ( int position ) const
QList<QGlyphRun> glyphRuns () const
bool isValid () const
int length () const
int position () const
QString text () const
bool operator!= ( const QTextFragment & other ) const
bool operator< ( const QTextFragment & other ) const
QTextFragment & operator= ( const QTextFragment & other )
bool operator== ( const QTextFragment & other ) const

Detailed Description

The QTextFragment class holds a piece of text in a QTextDocument with a single QTextCharFormat.

A text fragment describes a piece of text that is stored with a single character format. Text in which the character format changes can be represented by sequences of text fragments with different formats.

If the user edits the text in a fragment and introduces a different character format, the fragment's text will be split at each point where the format changes, and new fragments will be created. For example, changing the style of some text in the middle of a sentence will cause the fragment to be broken into three separate fragments: the first and third with the same format as before, and the second with the new style. The first fragment will contain the text from the beginning of the sentence, the second will contain the text from the middle, and the third takes the text from the end of the sentence.

A fragment's text and character format can be obtained with the text() and charFormat() functions. The length() function gives the length of the text in the fragment. position() gives the position in the document of the start of the fragment. To determine whether the fragment contains a particular position within the document, use the contains() function.

See also QTextDocument and Rich Text Document Structure.

Member Function Documentation

QTextFragment::QTextFragment ()

Creates a new empty text fragment.

QTextFragment::QTextFragment ( const QTextFragment & other )

Copies the content (text and format) of the other text fragment to this text fragment.

QTextCharFormat QTextFragment::charFormat () const

Returns the text fragment's character format.

See also text().

int QTextFragment::charFormatIndex () const

Returns an index into the document's internal list of character formats for the text fragment's character format.

See also QTextDocument::allFormats().

bool QTextFragment::contains ( int position ) const

Returns true if the text fragment contains the text at the given position in the document; otherwise returns false.

QList<QGlyphRun> QTextFragment::glyphRuns () const

Returns the glyphs of this text fragment. The positions of the glyphs are relative to the position of the QTextBlock's layout.

See also QGlyphRun, QTextBlock::layout(), QTextLayout::position(), and QPainter::drawGlyphRun().

bool QTextFragment::isValid () const

Returns true if this is a valid text fragment (i.e. has a valid position in a document); otherwise returns false.

int QTextFragment::length () const

Returns the number of characters in the text fragment.

See also text().

int QTextFragment::position () const

Returns the position of this text fragment in the document.

QString QTextFragment::text () const

Returns the text fragment's as plain text.

See also length() and charFormat().

bool QTextFragment::operator!= ( const QTextFragment & other ) const

Returns true if this text fragment is different (at a different position) from the other text fragment; otherwise returns false.

bool QTextFragment::operator< ( const QTextFragment & other ) const

Returns true if this text fragment appears earlier in the document than the other text fragment; otherwise returns false.

QTextFragment & QTextFragment::operator= ( const QTextFragment & other )

Assigns the content (text and format) of the other text fragment to this text fragment.

bool QTextFragment::operator== ( const QTextFragment & other ) const

Returns true if this text fragment is the same (at the same position) as the other text fragment; otherwise returns false.
Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia. Qt 4.8
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD.
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP !
 
 
Developpez.com

Nous contacter

Participez

Informations légales

 
Services

Forum Qt

Blogs

Hébergement

 
Partenaires

Hébergement Web