QStyleSheet - A collection of styles for rich text
       rendering and a generator of tags

       #include <qstylesheet.h>

       Inherits QObject.

   Public Members
       QStyleSheet ( QObject * parent=0, const char * name=0 )
       virtual ~QStyleSheet ()
       QStyleSheetItem* item ( const QString & name )
       const QStyleSheetItem* item ( const QString & name ) const
       void insert ( QStyleSheetItem * item ) (internal)
       virtual QTextCustomItem* tag ( const QString & name, const
           QMap<QString, QString> & attr, const QString &
           context, const QMimeSourceFactory & factory, bool
           emptyTag = FALSE ) const
       virtual void scaleFont ( QFont & font, int logicalSize )
           const
       virtual void error ( const QString & ) const

   Static Public Members
       QStyleSheet* defaultSheet ()
       void setDefaultSheet ( QStyleSheet * )
       QString convertFromPlainText ( const QString & )
       bool mightBeRichText ( const QString & )


DESCRIPTION

       A collection of styles for rich text rendering and a
       generator of tags.

       By creating QStyleSheetItem objects for a style sheet, you
       build a definition of a set of tags. This definition will
       be used by the internal rich text rendering system to
       parse and display text documents to which the style sheet
       applies. Rich text is normally visualized in a QTextView
       or a QTextBrowser. But also QLabel, QWhatsThis and
       QMessageBox support it for now, with others likely to
       follow. With QSimpleRichText it is possible to use the
       rich text renderer for custom widgets as well.

       The default QStyleSheet object has the following style
       bindings, sorted by structuring bindings, anchors,
       character style bindings (i.e. inline styles), special
       elements like horizontal lines or images and other tags.
       In addition, rich text supports simple HTML tables.

       The structuring tags are:

       <qt>...</qt> - A Qt rich text document. It understands the
              following attributes

              easily accessible with QTextView::documentTitle()

       type - The type of the document. The default type is page
              . It indicates that the document is displayed in a
              page of its own. Another style is detail. It can be
              used to explain certain expressions more detailed
              in a few sentences. The QTextBrowser will then keep
              the current page and display the new document in a
              small popup similar to QWhatsThis. Note that links
              will not work in documents with <qt type="detail"
              >...</qt>

       bgcolor - The background color, for example
              bgcolor="yellow" or bgcolor="#0000FF"

       background - The background pixmap, for example
              background="granit.xpm". The pixmap name will be
              resolved by a QMimeSourceFactory().

       text - The default text color, for example text="red"

       link - The link color, for example link="green"

       <h1>...</h1> - A top-level heading.

       <h2>...</h2> - A sub-level heading.

       <h3>...</h3> - A sub-sub-level heading.

       <p>...</p> - A left-aligned paragraph. Adjust the
              alignment with the align attribute. Possible values
              are left, right and center.

       <center>...</center> - A centered paragraph.

       <blockquote>...</blockquote> - An indented paragraph,
              useful for quotes.

       <ul>...</ul> - An un-ordered list. You can also pass a
              type argument to define the bullet style. The
              default is type=disc, other types are circle and
              square.

       <ol>...</ol> - An ordered list. You can also pass a type
              argument to define the enumeration label style. The
              default is type="1", other types are "a" and "A".

       <li>...</li> - A list item. This tag can only be used
              within the context of ol or ul.

       <pre>...</pre> - For larger junks of code. Whitespaces in
              the contents are preserved. For small bits of code,
              use the inline- style code.


       <a>...</a> - An anchor or link. The reference target is
              defined in the href attribute of the tag as in <a
              href="target.qml">...</a>. You can also specify an
              additional anchor within the specified target
              document, for example <a
              href="target.qml#123">...</a>. If a is meant to be
              an anchor, the reference source is given in the
              name attribute.

       The default character style bindings are:

       <em>...</em> - Emphasized. As default, this is the same as
              <i>...</i> (Italic)

       <strong>...</strong> - Strong. As default, this is the
              same as <bold>...</bold> (bold).

       <i>...</i> - Italic font style.

       <b>...</b> - Bold font style.

       <u>...</u> - Underlined font style.

       <big>...</big> - A larger font size.

       <small>...</small> - A smaller font size.

       <code>...</code> - Indicates Code. As default, this is the
              same as <tt>...</tt> (typewriter). For larger junks
              of code, use the block-tag pre.

       <tt>...</tt> - Typewriter font style.

       <font>...</font> - Customizes the font size, family and
              text color. The tag understands the following
              attributes:

       color - the text color, for example color="red" or
              color="#FF0000".

       size - the logical size of the font. Logical sizes 1 to 7
              are supported. The value may either be absolute,
              for example size=3, or relative like size=-2. In
              the latter case, the sizes are simply added.

       face - the family of the font, for example face=times.

       Special elements are:

       <img/> - An image. The image name for the mime source
              factory is given in the source attribute, for
              example <img src="qt.xpm"/> The image tag also

              determine the size of the image. If the pixmap does
              not fit to the specified size, it will be scaled
              automatically ( by using QImage::smoothScale() ).

              The align attribute determines where the image is
              placed. Per default, an image is placed inline,
              just like a normal character. Specify left or right
              to place the image at the respective side.

       <hr/> - A horizontal line

       <br/> - A line break

       Other tags not in any of the above categories are:

       <nobr>...</nobr> - No break. Prevents word wrap.

       In addition, rich text supports simple HTML tables. A
       table consists of a set of rows where each row contains
       some number of cells. Cells are either data cells or
       header cells, depending on their content. Usually a cell
       fills one rectangle in the table grid. It may, however,
       also span several rows, columns or both.

       <table>...</table> - A table definition. The default table
              is frameless. Specify the boolean attribute border
              in order to get a frame. Other attributes are:

       bgcolor - The background color

       width - The table width. This is either absolute in pixels
              or relative in percent of the column width, for
              example width=80%

       border - The width of the table border. The default is 0
              (= no border).

       cellspacing - Additional space around the table cells. The
              default is 2.

       cellpadding - Additinal space around the contents of table
              cells. Default is 1.

       <tr>...</tr> - A table row. Can only be used within table.
              Understands the attribute

       bgcolor - The background color

       <td>...</td> - A table data cell. Can only be used within
              tr. Understands the attributes

       bgcolor - The background color

              or relative in percent of the entire table width,
              for example width=50%

       colspan - Defines how many columns this cell spans. The
              default is 1.

       rowspan - Defines how many rows this cell spans. The
              default is 1.

       align - Alignment, possible values are left, right and
              center. The default is left-aligned.

       <th>...</th> - A table header cell. Like td but defaults
              to center-alignment and a bold font.


MEMBER FUNCTION DOCUMENTATION


QStyleSheet::QStyleSheet ( QObject * parent=0, const char *

       name=0 )
       Create a style sheet. Like any QObject, the created object
       will be deleted when its parent destructs (if the child
       still exists then).

       By default, the style sheet has the tag definitions
       defined above.


QStyleSheet::~QStyleSheet () [virtual]

       Destructs the style sheet. All styles inserted into the
       style sheet will be deleted.


QString QStyleSheet::convertFromPlainText ( const QString & plain

       ) [static]
       Auxiliary function. Converts the plain text string plain
       to a rich text formatted string while preserving its look.


QStyleSheet* QStyleSheet::defaultSheet () [static]

       Returns the application-wide default style sheet.This
       style sheet is used by rich text rendering classes such as
       QSimpleRichText, QWhatsThis and also QMessageBox to define
       the rendering style and available tags within rich text
       documents. It serves also as initial style sheet for the
       more complex render widgets QTextView and QTextBrowser.

       See also setDefaultSheet().


void QStyleSheet::error ( const QString & msg ) const [virtual]

       This virtual function is called when an error occurs when
       processing rich text. Reimplement if if you need to catch
       error messages.

       Errors might occur if some rich text strings contain tags
       that are not understood by the stylesheet, if some tags
       are nested wrongly or if tags are not closed properly.



QStyleSheetItem* QStyleSheet::item ( const QString & name )

       Returns the style with name name or 0 if there is no such
       style.


const QStyleSheetItem* QStyleSheet::item ( const QString & name )

       const
       Returns the style with name name or 0 if there is no such
       style (const version).


bool QStyleSheet::mightBeRichText ( const QString & text )

       [static]
       Returns whether the string text is likely to be rich text
       formatted.

       Note: The function uses a fast and therefore simple
       heuristic. It mainly checks whether there is something
       that looks like a tag before the first line break. While
       the result may be correct for most common cases, there is
       no guarantee.


void QStyleSheet::scaleFont ( QFont & font, int logicalSize )

       const [virtual]
       Scales the font font to the appropriate physical point
       size corresponding to the logical font size logicalSize.

       When calling this function, font has a point size
       corresponding to the logical font size 3.

       Typical logical font sizes range from 1 to 7, with 1 being
       the smallest.

       See also QStyleSheetItem::logicalFontSize(),
       QStyleSheetItem::logicalFontSizeStep() and
       QFont::setPointSize().


void QStyleSheet::setDefaultSheet ( QStyleSheet * sheet )

       [static]
       Sets the application-wide default style sheet, deleting
       any style sheet previously set. The ownership is
       transferred.

       See also defaultSheet().


QTextCustomItem* QStyleSheet::tag ( const QString & name, const

       QMap<QString, QString> & attr, const QString & context,
       const QMimeSourceFactory & factory, bool = FALSE ) const
       [virtual]
       Generates an internal object for tag named name, given the
       attributes attr, and using additional information provided
       by the mime source factory factory .

       This function should not (yet) be used in application



void QStyleSheet::insert ( QStyleSheetItem * style )

       For internal use only.


SEE ALSO

       http://doc.trolltech.com/qstylesheet.html
       http://www.trolltech.com/faq/tech.html


COPYRIGHT

       Copyright 1992-2001 Trolltech AS,
       http://www.trolltech.com.  See the license file included
       in the distribution for a complete license statement.


AUTHOR

       Generated automatically from the source code.


BUGS

       If you find a bug in Qt, please report it as described in
       http://doc.trolltech.com/bughowto.html.  Good bug reports
       make our job much simpler. Thank you.

       In case of content or formattting problems with this
       manual page, please report them to qt-bugs@trolltech.com.
       Please include the name of the manual page
       (qstylesheet.3qt) and the Qt version (2.3.1).


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