QTextBrowser(3qt)QTextBrowser(3qt)NAMEQTextBrowser - Rich text browser with hypertext navigation
SYNOPSIS
#include <qtextbrowser.h>
Inherits QTextEdit.
Public Members
QTextBrowser ( QWidget * parent = 0, const char * name = 0 )
QString source () const
Public Slots
virtual void setSource ( const QString & name )
virtual void backward ()
virtual void forward ()
virtual void home ()
virtual void reload ()
Signals
void backwardAvailable ( bool available )
void forwardAvailable ( bool available )
void sourceChanged ( const QString & src )
void highlighted ( const QString & link )
void linkClicked ( const QString & link )
void anchorClicked ( const QString & name, const QString & link )
Properties
bool modified - whether the contents have been modified (read only)
bool overwriteMode - this text browser's overwrite mode (read only)
bool readOnly - whether the contents are read only (read only)
QString source - the name of the displayed document
int undoDepth - this text browser's undo depth (read only)
bool undoRedoEnabled - whether undo and redo are enabled (read only)
Protected Members
virtual void keyPressEvent ( QKeyEvent * e )
DESCRIPTION
The QTextBrowser class provides a rich text browser with hypertext
navigation.
This class extends QTextEdit (in read-only mode), adding some
navigation functionality so that users can follow links in hypertext
documents. The contents of QTextEdit is set with setText(), but
QTextBrowser has an additional function, setSource(), which makes it
possible to set the text to a named document. The name is looked up in
the text view's mime source factory. If a document name ends with an
anchor (for example, "#anchor"), the text browser automatically scrolls
to that position (using scrollToAnchor()). When the user clicks on a
hyperlink, the browser will call setSource() itself, with the link's
href value as argument. You can track the current source by connetion
to the sourceChanged() signal.
QTextBrowser provides backward() and forward() slots which you can use
to implement Back and Forward buttons. The home() slot sets the text to
the very first document displayed. The linkClicked() signal is emitted
when the user clicks a link.
By using QTextEdit::setMimeSourceFactory() you can provide your own
subclass of QMimeSourceFactory. This makes it possible to access data
from anywhere, for example from a network or from a database. See
QMimeSourceFactory::data() for details.
If you intend using the mime factory to read the data directly from the
file system, you may have to specify the encoding for the file
extension you are using. For example:
mimeSourceFactory()->setExtensionType("qml", "text/utf8");
This is to ensure that the factory is able to resolve the document
names.
QTextBrowser interprets the tags it processes in accordance with the
default style sheet. Change the style sheet with setStyleSheet(); see
QStyleSheet for details.
If you want to provide your users with editable rich text use
QTextEdit. If you want a text browser without hypertext navigation use
QTextEdit, and use QTextEdit::setReadOnly() to disable editing. If you
just need to display a small piece of rich text use QSimpleRichText or
QLabel.
[Image Omitted]
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See also Advanced Widgets, Help System, and Text Related Classes.
MEMBER FUNCTION DOCUMENTATIONQTextBrowser::QTextBrowser ( QWidget * parent = 0, const char * name = 0 )
Constructs an empty QTextBrowser called name, with parent parent.
void QTextBrowser::anchorClicked ( const QString & name, const QString & link
) [signal]
This signal is emitted when the user clicks an anchor. The link is the
value of the href i.e. the name of the target document. The name is the
name of the anchor.
See also linkClicked().
void QTextBrowser::backward () [virtual slot]
Changes the document displayed to the previous document in the list of
documents built by navigating links. Does nothing if there is no
previous document.
See also forward() and backwardAvailable().
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::backwardAvailable ( bool available ) [signal]
This signal is emitted when the availability of backward() changes.
available is FALSE when the user is at home(); otherwise it is TRUE.
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::forward () [virtual slot]
Changes the document displayed to the next document in the list of
documents built by navigating links. Does nothing if there is no next
document.
See also backward() and forwardAvailable().
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::forwardAvailable ( bool available ) [signal]
This signal is emitted when the availability of forward() changes.
available is TRUE after the user navigates backward() and FALSE when
the user navigates or goes forward().
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::highlighted ( const QString & link ) [signal]
This signal is emitted when the user has selected but not activated a
link in the document. link is the value of the href i.e. the name of
the target document.
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::home () [virtual slot]
Changes the document displayed to be the first document the browser
displayed.
Example: helpviewer/helpwindow.cpp.
void QTextBrowser::keyPressEvent ( QKeyEvent * e ) [virtual protected]
The event e is used to provide the following keyboard shortcuts:
<center>.nf
</center>
Reimplemented from QTextEdit.
void QTextBrowser::linkClicked ( const QString & link ) [signal]
This signal is emitted when the user clicks a link. The link is the
value of the href i.e. the name of the target document.
The link will be the absolute location of the document, based on the
value of the anchor's href tag and the current context of the document.
See also anchorClicked() and context().
void QTextBrowser::reload () [virtual slot]
Reloads the current set source.
void QTextBrowser::setSource ( const QString & name ) [virtual slot]
Sets the name of the displayed document to name. See the "source"
property for details.
QString QTextBrowser::source () const
Returns the name of the displayed document. See the "source" property
for details.
void QTextBrowser::sourceChanged ( const QString & src ) [signal]
This signal is emitted when the mime source has changed, src being the
new source.
Source changes happen both programmatically when calling setSource(),
forward(), backword() or home() or when the user clicks on links or
presses the equivalent key sequences.
Example: helpviewer/helpwindow.cpp.
Property Documentation
bool modified
This property holds whether the contents have been modified.
bool overwriteMode
This property holds this text browser's overwrite mode.
bool readOnly
This property holds whether the contents are read only.
QString source
This property holds the name of the displayed document.
This is a QString::null if no document is displayed or if the source is
unknown.
Setting this property uses the mimeSourceFactory() to lookup the named
document. It also checks for optional anchors and scrolls the document
accordingly.
If the first tag in the document is <qt type=detail>, the document is
displayed as a popup rather than as new document in the browser window
itself. Otherwise, the document is displayed normally in the text
browser with the text set to the contents of the named document with
setText().
If you are using the filesystem access capabilities of the mime source
factory, you must ensure that the factory knows about the encoding of
specified files; otherwise no data will be available. The default
factory handles a couple of common file extensions such as *.html and
*.txt with reasonable defaults. See QMimeSourceFactory::data() for
details.
Set this property's value with setSource() and get this property's
value with source().
int undoDepth
This property holds this text browser's undo depth.
bool undoRedoEnabled
This property holds whether undo and redo are enabled.
SEE ALSO
http://doc.trolltech.com/qtextbrowser.html
http://www.trolltech.com/faq/tech.html
COPYRIGHT
Copyright 1992-2007 Trolltech ASA, 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
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bugs@trolltech.com. Please include the name of the manual page
(qtextbrowser.3qt) and the Qt version (3.3.8).
Trolltech AS 2 February 2007 QTextBrowser(3qt)