Qt 4.3: QTextFormat Class Reference

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# QTextFormat Class Reference
[QtGui module]

The QTextFormat class provides formatting information for a QTextDocument. More...

     #include <QTextFormat>

Inherited by QTextBlockFormat, QTextCharFormat, QTextFrameFormat, and QTextListFormat.

- List of all members, including inherited members

### Public Types

- enum FormatType { InvalidFormat, BlockFormat, CharFormat, ListFormat, ..., UserFormat }
- enum ObjectTypes { NoObject, ImageObject, TableObject, UserObject }
- enum PageBreakFlag { PageBreak_Auto, PageBreak_AlwaysBefore, PageBreak_AlwaysAfter }
- flags PageBreakFlags
- enum Property { ObjectIndex, CssFloat, LayoutDirection, OutlinePen, ..., UserProperty }

### Public Functions

- QTextFormat ()
- QTextFormat ( int type )
- QTextFormat ( const QTextFormat & other )
- ~QTextFormat ()
- QBrush background () const
- bool boolProperty ( int propertyId ) const
- QBrush brushProperty ( int propertyId ) const
- void clearBackground ()
- void clearForeground ()
- void clearProperty ( int propertyId )
- QColor colorProperty ( int propertyId ) const
- qreal doubleProperty ( int propertyId ) const
- QBrush foreground () const
- bool hasProperty ( int propertyId ) const
- int intProperty ( int propertyId ) const
- bool isBlockFormat () const
- bool isCharFormat () const
- bool isFrameFormat () const
- bool isImageFormat () const
- bool isListFormat () const
- bool isTableFormat () const
- bool isValid () const
- Qt::LayoutDirection layoutDirection () const
- QTextLength lengthProperty ( int propertyId ) const
- QVector<QTextLength> lengthVectorProperty ( int propertyId ) const
- void merge ( const QTextFormat & other )
- int objectIndex () const
- int objectType () const
- QPen penProperty ( int propertyId ) const
- QMap<int, QVariant> properties () const
- QVariant property ( int propertyId ) const
- int propertyCount () const
- void setBackground ( const QBrush & brush )
- void setForeground ( const QBrush & brush )
- void setLayoutDirection ( Qt::LayoutDirection direction )
- void setObjectIndex ( int index )
- void setObjectType ( int type )
- void setProperty ( int propertyId, const QVariant & value )
- void setProperty ( int propertyId, const QVector<QTextLength> & value )
- QString stringProperty ( int propertyId ) const
- QTextBlockFormat toBlockFormat () const
- QTextCharFormat toCharFormat () const
- QTextFrameFormat toFrameFormat () const
- QTextImageFormat toImageFormat () const
- QTextListFormat toListFormat () const
- QTextTableFormat toTableFormat () const
- int type () const
- operator QVariant () const
- bool operator!= ( const QTextFormat & other ) const
- QTextFormat & operator= ( const QTextFormat & other )
- bool operator== ( const QTextFormat & other ) const

## Detailed Description

The QTextFormat class provides formatting information for a QTextDocument.

A QTextFormat is a generic class used for describing the format of parts of a QTextDocument. The derived classes QTextCharFormat, QTextBlockFormat, QTextListFormat, and QTextTableFormat are usually more useful, and describe the formatting that is applied to specific parts of the document.

A format has a `FormatType` which specifies the kinds of thing it can format; e.g. a block of text, a list, a table, etc. A format also has various properties (some specific to particular format types), as described by the Property enum. Every property has a corresponding Property.

The format type is given by type(), and the format can be tested with isCharFormat(), isBlockFormat(), isListFormat(), isTableFormat(), isFrameFormat(), and isImageFormat(). If the type is determined, it can be retrieved with toCharFormat(), toBlockFormat(), toListFormat(), toTableFormat(), toFrameFormat(), and toImageFormat().

A format's properties can be set with the setProperty() functions, and retrieved with boolProperty(), intProperty(), doubleProperty(), and stringProperty() as appropriate. All the property IDs used in the format can be retrieved with allPropertyIds(). One format can be merged into another using merge().

A format's object index can be set with setObjectIndex(), and retrieved with objectIndex(). These methods can be used to associate the format with a QTextObject. It is used to represent lists, frames, and tables inside the document.

See also Text Processing Classes.

## Member Type Documentation

### enum QTextFormat::FormatType

Constant | Value
--- | ---
`QTextFormat::InvalidFormat` | `-1`
`QTextFormat::BlockFormat` | `1`
`QTextFormat::CharFormat` | `2`
`QTextFormat::ListFormat` | `3`
`QTextFormat::TableFormat` | `4`
`QTextFormat::FrameFormat` | `5`
`QTextFormat::UserFormat` | `100`

### enum QTextFormat::ObjectTypes

Constant | Value | Description
--- | --- | ---
`QTextFormat::NoObject` | `0` |
`QTextFormat::ImageObject` | `1` |
`QTextFormat::TableObject` | `2` |
`QTextFormat::UserObject` | `0x1000` | The first object that can be used for application-specific purposes.

### enum QTextFormat::PageBreakFlag
flags QTextFormat::PageBreakFlags

Constant | Value | Description
--- | --- | ---
`QTextFormat::PageBreak_Auto` | `0` | The page break is determined automatically depending on the available space on the current page
`QTextFormat::PageBreak_AlwaysBefore` | `0x001` | The page is always broken before the paragraph/table
`QTextFormat::PageBreak_AlwaysAfter` | `0x010` | A new page is always started after the paragraph/table

This enum was introduced in Qt 4.2.

The PageBreakFlags type is a typedef for QFlags<PageBreakFlag>. It stores an OR combination of PageBreakFlag values.

### enum QTextFormat::Property

Constant | Value
--- | ---
`QTextFormat::ObjectIndex` | `0x0`

Paragraph and character properties

Constant | Value | Description
--- | --- | ---
`QTextFormat::CssFloat` | `0x0800` |
`QTextFormat::LayoutDirection` | `0x0801` | The layout direction of the text in the document (Qt::LayoutDirection).
`QTextFormat::OutlinePen` | `0x810` |
`QTextFormat::ForegroundBrush` | `0x821` |
`QTextFormat::BackgroundBrush` | `0x820` |

Paragraph properties

Constant | Value
--- | ---
`QTextFormat::BlockAlignment` | `0x1010`
`QTextFormat::BlockTopMargin` | `0x1030`
`QTextFormat::BlockBottomMargin` | `0x1031`
`QTextFormat::BlockLeftMargin` | `0x1032`
`QTextFormat::BlockRightMargin` | `0x1033`
`QTextFormat::TextIndent` | `0x1034`
`QTextFormat::BlockIndent` | `0x1040`
`QTextFormat::BlockNonBreakableLines` | `0x1050`
`QTextFormat::BlockTrailingHorizontalRulerWidth` | `0x1060`

Character properties

Constant | Value | Description
--- | --- | ---
`QTextFormat::FontFamily` | `0x2000` |
`QTextFormat::FontPointSize` | `0x2001` |
`QTextFormat::FontSizeIncrement` | `FontSizeAdjustment` |
`QTextFormat::FontWeight` | `0x2003` |
`QTextFormat::FontItalic` | `0x2004` |
`QTextFormat::FontUnderline` | `0x2005` | This property has been deprecated. Use QTextFormat::TextUnderlineStyle instead.
`QTextFormat::FontOverline` | `0x2006` |
`QTextFormat::FontStrikeOut` | `0x2007` |
`QTextFormat::FontFixedPitch` | `0x2008` |
`QTextFormat::FontPixelSize` | `0x2009` |
`QTextFormat::TextUnderlineColor` | `0x2010` |
`QTextFormat::TextVerticalAlignment` | `0x2021` |
`QTextFormat::TextOutline` | `0x2022` |
`QTextFormat::TextUnderlineStyle` | `0x2023` |
`QTextFormat::TextToolTip` | `0x2024` | Specifies the (optional) tool tip to be displayed for a fragment of text.
`QTextFormat::IsAnchor` | `0x2030` |
`QTextFormat::AnchorHref` | `0x2031` |
`QTextFormat::AnchorName` | `0x2032` |
`QTextFormat::ObjectType` | `0x2f00` |

List properties

Constant | Value
--- | ---
`QTextFormat::ListStyle` | `0x3000`
`QTextFormat::ListIndent` | `0x3001`

Table and frame properties

Constant | Value
--- | ---
`QTextFormat::FrameBorder` | `0x4000`
`QTextFormat::FrameBorderBrush` | `0x4009`
`QTextFormat::FrameBorderStyle` | `0x4010`
`QTextFormat::FrameBottomMargin` | `0x4006`
`QTextFormat::FrameHeight` | `0x4004`
`QTextFormat::FrameLeftMargin` | `0x4007`
`QTextFormat::FrameMargin` | `0x4001`
`QTextFormat::FramePadding` | `0x4002`
`QTextFormat::FrameRightMargin` | `0x4008`
`QTextFormat::FrameTopMargin` | `0x4005`
`QTextFormat::FrameWidth` | `0x4003`
`QTextFormat::TableCellSpacing` | `0x4102`
`QTextFormat::TableCellPadding` | `0x4103`
`QTextFormat::TableColumns` | `0x4100`
`QTextFormat::TableColumnWidthConstraints` | `0x4101`
`QTextFormat::TableHeaderRowCount` | `0x4104`

Table cell properties

Constant | Value
--- | ---
`QTextFormat::TableCellRowSpan` | `0x4810`
`QTextFormat::TableCellColumnSpan` | `0x4811`

Image properties

Constant | Value
--- | ---
`QTextFormat::ImageName` | `0x5000`
`QTextFormat::ImageWidth` | `0x5010`
`QTextFormat::ImageHeight` | `0x5011`

Selection properties

Constant | Value
--- | ---
`QTextFormat::FullWidthSelection` | `0x06000`

Page break properties

Constant | Value
--- | ---
`QTextFormat::PageBreakPolicy` | `0x7000`
`QTextFormat::UserProperty` | `0x100000`

## Member Function Documentation

### QTextFormat::QTextFormat ()

Creates a new text format with an `InvalidFormat`.

See also FormatType.

### QTextFormat::QTextFormat ( int type )

Creates a new text format of the given type.

See also FormatType.

### QTextFormat::QTextFormat ( const QTextFormat & other )

Creates a new text format with the same attributes as the other text format.

### QTextFormat::~QTextFormat ()

Destroys this text format.

### QBrush QTextFormat::background () const

Returns the brush used to paint the document's background.

See also setBackground(), clearBackground(), and foreground().

### bool QTextFormat::boolProperty ( int propertyId ) const

Returns the value of the property specified by propertyId. If the property isn't of QTextFormat::Bool type, false is returned instead.

See also setProperty(), intProperty(), doubleProperty(), stringProperty(), colorProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### QBrush QTextFormat::brushProperty ( int propertyId ) const

Returns the value of the property given by propertyId; if the property isn't of QVariant::Brush type, Qt::NoBrush is returned instead.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), stringProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### void QTextFormat::clearBackground ()

Clears the brush used to paint the document's background. The default brush will be used.

See also background(), setBackground(), and clearForeground().

### void QTextFormat::clearForeground ()

Clears the brush used to paint the document's foreground. The default brush will be used.

See also foreground(), setForeground(), and clearBackground().

### void QTextFormat::clearProperty ( int propertyId )

Clears the value of the property given by propertyId

### QColor QTextFormat::colorProperty ( int propertyId ) const

Returns the value of the property given by propertyId; if the property isn't of QVariant::Color type, an invalid color is returned instead.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), stringProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### qreal QTextFormat::doubleProperty ( int propertyId ) const

Returns the value of the property specified by propertyId. If the property isn't of QVariant::Double type, 0 is returned instead.

See also setProperty(), boolProperty(), intProperty(), stringProperty(), colorProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### QBrush QTextFormat::foreground () const

Returns the brush used to render foreground details, such as text, frame outlines, and table borders.

See also setForeground(), clearForeground(), and background().

### bool QTextFormat::hasProperty ( int propertyId ) const

Returns true if the text format has a property with the given propertyId; otherwise returns false.

See also properties() and Property.

### int QTextFormat::intProperty ( int propertyId ) const

Returns the value of the property specified by propertyId. If the property is not of QTextFormat::Integer type, 0 is returned instead.

See also setProperty(), boolProperty(), doubleProperty(), stringProperty(), colorProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### bool QTextFormat::isBlockFormat () const

Returns true if this text format is a `BlockFormat`; otherwise returns false.

### bool QTextFormat::isCharFormat () const

Returns true if this text format is a `CharFormat`; otherwise returns false.

### bool QTextFormat::isFrameFormat () const

Returns true if this text format is a `FrameFormat`; otherwise returns false.

### bool QTextFormat::isImageFormat () const

Returns true if this text format is an image format; otherwise returns false.

### bool QTextFormat::isListFormat () const

Returns true if this text format is a `ListFormat`; otherwise returns false.

### bool QTextFormat::isTableFormat () const

Returns true if this text format is a `TableFormat`; otherwise returns false.

### bool QTextFormat::isValid () const

Returns true if the format is valid (i.e. is not InvalidFormat); otherwise returns false.

### Qt::LayoutDirection QTextFormat::layoutDirection () const

Returns the document's layout direction.

See also setLayoutDirection().

### QTextLength QTextFormat::lengthProperty ( int propertyId ) const

Returns the value of the property given by propertyId.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), stringProperty(), colorProperty(), lengthVectorProperty(), and Property.

### QVector<QTextLength> QTextFormat::lengthVectorProperty ( int propertyId ) const

Returns the value of the property given by propertyId. If the property isn't of QTextFormat::LengthVector type, an empty length vector is returned instead.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), stringProperty(), colorProperty(), lengthProperty(), and Property.

### void QTextFormat::merge ( const QTextFormat & other )

Merges the other format with this format; where there are conflicts the other format takes precedence.

### int QTextFormat::objectIndex () const

Returns the index of the format object, or -1 if the format object is invalid.

See also setObjectIndex().

### int QTextFormat::objectType () const

Returns the text format's object type. See `ObjectTypes`.

See also setObjectType().

### QPen QTextFormat::penProperty ( int propertyId ) const

Returns the value of the property given by propertyId; if the property isn't of QVariant::Pen type, Qt::NoPen is returned instead.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), stringProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### QMap<int, QVariant> QTextFormat::properties () const

Returns a map with all properties of this text format.

### QVariant QTextFormat::property ( int propertyId ) const

Returns the property specified by the given propertyId.

See also setProperty().

### int QTextFormat::propertyCount () const

Returns the number of properties stored in the format.

This function was introduced in Qt 4.3.

### void QTextFormat::setBackground ( const QBrush & brush )

Sets the brush use to paint the document's background to the brush specified.

See also background(), clearBackground(), and setForeground().

### void QTextFormat::setForeground ( const QBrush & brush )

Sets the foreground brush to the specified brush. The foreground brush is mostly used to render text.

See also foreground(), clearForeground(), and setBackground().

### void QTextFormat::setLayoutDirection ( Qt::LayoutDirection direction )

Sets the document's layout direction to the specified direction.

See also layoutDirection().

### void QTextFormat::setObjectIndex ( int index )

Sets the format object's object index.

See also objectIndex().

### void QTextFormat::setObjectType ( int type )

Sets the text format's object type. See `ObjectTypes`.

See also objectType().

### void QTextFormat::setProperty ( int propertyId, const QVariant & value )

Sets the property specified by the propertyId to the given value.

See also property().

### void QTextFormat::setProperty ( int propertyId, const QVector<QTextLength> & value )

This is an overloaded member function, provided for convenience.

Sets the value of the property given by propertyId to value.

See also lengthVectorProperty() and Property.

### QString QTextFormat::stringProperty ( int propertyId ) const

Returns the value of the property given by propertyId; if the property isn't of QVariant::String type, an empty string is returned instead.

See also setProperty(), boolProperty(), intProperty(), doubleProperty(), colorProperty(), lengthProperty(), lengthVectorProperty(), and Property.

### QTextBlockFormat QTextFormat::toBlockFormat () const

Returns this format as a block format.

### QTextCharFormat QTextFormat::toCharFormat () const

Returns this format as a character format.

### QTextFrameFormat QTextFormat::toFrameFormat () const

Returns this format as a frame format.

### QTextImageFormat QTextFormat::toImageFormat () const

Returns this format as an image format.

### QTextListFormat QTextFormat::toListFormat () const

Returns this format as a list format.

### QTextTableFormat QTextFormat::toTableFormat () const

Returns this format as a table format.

### int QTextFormat::type () const

Returns the type of this format.

See also ObjectTypes.

### QTextFormat::operator QVariant () const

Returns the text format as a QVariant

### bool QTextFormat::operator!= ( const QTextFormat & other ) const

Returns true if this text format is different from the other text format.

### QTextFormat & QTextFormat::operator= ( const QTextFormat & other )

Assigns the other text format to this text format, and returns a reference to this text format.

### bool QTextFormat::operator== ( const QTextFormat & other ) const

Returns true if this text format is the same as the other text format.