QTextBlockFormat Class Reference

The QTextBlockFormat class provides formatting information for blocks of text in a QTextDocument. More...

 #include <QTextBlockFormat>

Inherits QTextFormat.

Note: All functions in this class are reentrant.

List of all members, including inherited members

Public Functions

	QTextBlockFormat ()
Qt::Alignment	alignment () const
qreal	bottomMargin () const
int	indent () const
bool	isValid () const
qreal	leftMargin () const
bool	nonBreakableLines () const
PageBreakFlags	pageBreakPolicy () const
qreal	rightMargin () const
void	setAlignment ( Qt::Alignment alignment )
void	setBottomMargin ( qreal margin )
void	setIndent ( int indentation )
void	setLeftMargin ( qreal margin )
void	setNonBreakableLines ( bool b )
void	setPageBreakPolicy ( PageBreakFlags policy )
void	setRightMargin ( qreal margin )
void	setTabPositions ( const QList<QTextOption::Tab> & tabs )
void	setTextIndent ( qreal indent )
void	setTopMargin ( qreal margin )
QList<QTextOption::Tab>	tabPositions () const
qreal	textIndent () const
qreal	topMargin () const

49 public functions inherited from QTextFormat

Detailed Description

The QTextBlockFormat class provides formatting information for blocks of text in a QTextDocument.

A document is composed of a list of blocks, represented by QTextBlock objects. Each block can contain an item of some kind, such as a paragraph of text, a table, a list, or an image. Every block has an associated QTextBlockFormat that specifies its characteristics.

To cater for left-to-right and right-to-left languages you can set a block's direction with setDirection(). Paragraph alignment is set with setAlignment(). Margins are controlled by setTopMargin(), setBottomMargin(), setLeftMargin(), setRightMargin(). Overall indentation is set with setIndent(), the indentation of the first line with setTextIndent().

Line breaking can be enabled and disabled with setNonBreakableLines().

The brush used to paint the paragraph's background is set with setBackground(), and other aspects of the text's appearance can be customized by using the setProperty() function with the OutlinePen, ForegroundBrush, and BackgroundBrush QTextFormat::Property values.

If a text block is part of a list, it can also have a list format that is accessible with the listFormat() function.

See also QTextBlock and QTextCharFormat.

Member Function Documentation

QTextBlockFormat::QTextBlockFormat ()

Constructs a new QTextBlockFormat.

Qt::Alignment QTextBlockFormat::alignment () const

Returns the paragraph's alignment.

qreal QTextBlockFormat::bottomMargin () const

Returns the paragraph's bottom margin.

See also setBottomMargin() and topMargin().

int QTextBlockFormat::indent () const

Returns the paragraph's indent.

bool QTextBlockFormat::isValid () const

Returns true if this block format is valid; otherwise returns false.

qreal QTextBlockFormat::leftMargin () const

Returns the paragraph's left margin.

See also setLeftMargin(), rightMargin(), and indent().

bool QTextBlockFormat::nonBreakableLines () const

Returns true if the lines in the paragraph are non-breakable; otherwise returns false.

PageBreakFlags QTextBlockFormat::pageBreakPolicy () const

Returns the currently set page break policy for the paragraph. The default is QTextFormat::PageBreak_Auto.

This function was introduced in Qt 4.2.

qreal QTextBlockFormat::rightMargin () const

Returns the paragraph's right margin.

See also setRightMargin() and leftMargin().

void QTextBlockFormat::setAlignment ( Qt::Alignment alignment )

Sets the paragraph's alignment.

void QTextBlockFormat::setBottomMargin ( qreal margin )

Sets the paragraph's bottom margin.

See also bottomMargin(), setTopMargin(), setLeftMargin(), and setRightMargin().

void QTextBlockFormat::setIndent ( int indentation )

Sets the paragraph's indentation. Margins are set independently of indentation with setLeftMargin() and setTextIndent(). The indentation is an integer that is multiplied with the document-wide standard indent, resulting in the actual indent of the paragraph.

See also indent() and QTextDocument::indentWidth().

void QTextBlockFormat::setLeftMargin ( qreal margin )

Sets the paragraph's left margin. Indentation can be applied separately with setIndent().

See also leftMargin(), setRightMargin(), setTopMargin(), and setBottomMargin().

void QTextBlockFormat::setNonBreakableLines ( bool b )

If b is true, the lines in the paragraph are treated as non-breakable; otherwise they are breakable.

void QTextBlockFormat::setPageBreakPolicy ( PageBreakFlags policy )

Sets the page break policy for the paragraph to policy.

This function was introduced in Qt 4.2.

void QTextBlockFormat::setRightMargin ( qreal margin )

Sets the paragraph's right margin.

See also rightMargin(), setLeftMargin(), setTopMargin(), and setBottomMargin().

void QTextBlockFormat::setTabPositions ( const QList<QTextOption::Tab> & tabs )

Sets the tab positions for the text block to those specified by tabs.

This function was introduced in Qt 4.4.

void QTextBlockFormat::setTextIndent ( qreal indent )

Sets the indent for the first line in the block. This allows the first line of a paragraph to be indented differently to the other lines, enhancing the readability of the text.

See also textIndent(), setLeftMargin(), setRightMargin(), setTopMargin(), and setBottomMargin().

void QTextBlockFormat::setTopMargin ( qreal margin )

Sets the paragraph's top margin.

See also topMargin(), setBottomMargin(), setLeftMargin(), and setRightMargin().

QList<QTextOption::Tab> QTextBlockFormat::tabPositions () const

Returns a list of tab positions defined for the text block.