QTextBrowser Class Reference

 #include <QTextBrowser>

Member Function Documentation

QTextBrowser::QTextBrowser ( QWidget * parent = 0 )

Constructs an empty QTextBrowser with parent parent.

void QTextBrowser::anchorClicked ( const QUrl & link ) [signal]

This signal is emitted when the user clicks an anchor. The URL referred to by the anchor is passed in link.

Note that the browser will automatically handle navigation to the location specified by link unless the openLinks property is set to false or you call setSource() in a slot connected. This mechanism is used to override the default navigation features of the browser.

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().

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.

int QTextBrowser::backwardHistoryCount () const

Returns the number of locations backward in the history.

This function was introduced in Qt 4.4.

void QTextBrowser::clearHistory ()

Clears the history of visited documents and disables the forward and backward navigation.

This function was introduced in Qt 4.2.

See also backward() and forward().

bool QTextBrowser::event ( QEvent * e ) [virtual protected]

Reimplemented from QObject::event().

bool QTextBrowser::focusNextPrevChild ( bool next ) [virtual protected]

Reimplemented from QWidget::focusNextPrevChild().

void QTextBrowser::focusOutEvent ( QFocusEvent * ev ) [virtual protected]

Reimplemented from QWidget::focusOutEvent().

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().

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().

int QTextBrowser::forwardHistoryCount () const

Returns the number of locations forward in the history.

This function was introduced in Qt 4.4.

void QTextBrowser::highlighted ( const QUrl & link ) [signal]

This signal is emitted when the user has selected but not activated an anchor in the document. The URL referred to by the anchor is passed in link.

void QTextBrowser::highlighted ( const QString & link ) [signal]

This is an overloaded function.

Convenience signal that allows connecting to a slot that takes just a QString, like for example QStatusBar's message().

void QTextBrowser::historyChanged () [signal]

This signal is emitted when the history changes.

This function was introduced in Qt 4.4.

See also historyTitle() and historyUrl().

QString QTextBrowser::historyTitle ( int i ) const

Returns the documentTitle() of the HistoryItem.

Input	Return
i < 0	backward() history
i == 0	current, see QTextBrowser::source()
i > 0	forward() history

 backaction.setToolTip(browser.historyTitle(-1));
 forwardaction.setToolTip(browser.historyTitle(+1));

This function was introduced in Qt 4.4.

QUrl QTextBrowser::historyUrl ( int i ) const

Returns the url of the HistoryItem.

Input	Return
i < 0	backward() history
i == 0	current, see QTextBrowser::source()
i > 0	forward() history

This function was introduced in Qt 4.4.

void QTextBrowser::home () [virtual slot]

Changes the document displayed to be the first document from the history.

bool QTextBrowser::isBackwardAvailable () const

Returns true if the text browser can go backward in the document history using backward().

This function was introduced in Qt 4.2.

See also backwardAvailable() and backward().

bool QTextBrowser::isForwardAvailable () const

Returns true if the text browser can go forward in the document history using forward().

This function was introduced in Qt 4.2.

See also forwardAvailable() and forward().

void QTextBrowser::keyPressEvent ( QKeyEvent * ev ) [virtual protected]

Reimplemented from QWidget::keyPressEvent().

The event ev is used to provide the following keyboard shortcuts:

Keypress	Action
Alt+Left Arrow	backward()
Alt+Right Arrow	forward()
Alt+Up Arrow	home()

QVariant QTextBrowser::loadResource ( int type, const QUrl & name ) [virtual]

Reimplemented from QTextEdit::loadResource().

This function is called when the document is loaded and for each image in the document. The type indicates the type of resource to be loaded. An invalid QVariant is returned if the resource cannot be loaded.

The default implementation ignores type and tries to locate the resources by interpreting name as a file name. If it is not an absolute path it tries to find the file in the paths of the searchPaths property and in the same directory as the current source. On success, the result is a QVariant that stores a QByteArray with the contents of the file.

If you reimplement this function, you can return other QVariant types. The table below shows which variant types are supported depending on the resource type:

ResourceType	QVariant::Type
QTextDocument::HtmlResource	QString or QByteArray
QTextDocument::ImageResource	QImage, QPixmap or QByteArray
QTextDocument::StyleSheetResource	QString or QByteArray

void QTextBrowser::mouseMoveEvent ( QMouseEvent * e ) [virtual protected]

Reimplemented from QWidget::mouseMoveEvent().

void QTextBrowser::mousePressEvent ( QMouseEvent * e ) [virtual protected]

Reimplemented from QWidget::mousePressEvent().

void QTextBrowser::mouseReleaseEvent ( QMouseEvent * e ) [virtual protected]

Reimplemented from QWidget::mouseReleaseEvent().

void QTextBrowser::paintEvent ( QPaintEvent * e ) [virtual protected]

Reimplemented from QWidget::paintEvent().

void QTextBrowser::reload () [virtual slot]

Reloads the current set source.

void QTextBrowser::sourceChanged ( const QUrl & src ) [signal]

This signal is emitted when the 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.