QTextEdit(3qt)QTextEdit(3qt)NAMEQTextEdit - Powerful single-page rich text editor
SYNOPSIS
#include <qtextedit.h>
Inherits QScrollView.
Inherited by QMultiLineEdit, QTextBrowser, and QTextView.
Public Members
enum WordWrap { NoWrap, WidgetWidth, FixedPixelWidth, FixedColumnWidth
}
enum WrapPolicy { AtWordBoundary, AtWhiteSpace = AtWordBoundary,
Anywhere, AtWordOrDocumentBoundary }
enum AutoFormatting { AutoNone = 0, AutoBulletList = 0x00000001,
AutoAll = 0xffffffff }
enum KeyboardAction { ActionBackspace, ActionDelete, ActionReturn,
ActionKill, ActionWordBackspace, ActionWordDelete }
enum CursorAction { MoveBackward, MoveForward, MoveWordBackward,
MoveWordForward, MoveUp, MoveDown, MoveLineStart, MoveLineEnd,
MoveHome, MoveEnd, MovePgUp, MovePgDown }
enum VerticalAlignment { AlignNormal, AlignSuperScript, AlignSubScript
}
QTextEdit ( const QString & text, const QString & context =
QString::null, QWidget * parent = 0, const char * name = 0 )
QTextEdit ( QWidget * parent = 0, const char * name = 0 )
QString text () const
QString text ( int para ) const
TextFormat textFormat () const
QString context () const
QString documentTitle () const
void getSelection ( int * paraFrom, int * indexFrom, int * paraTo, int
* indexTo, int selNum = 0 ) const
virtual bool find ( const QString & expr, bool cs, bool wo, bool
forward = TRUE, int * para = 0, int * index = 0 )
int paragraphs () const
int lines () const
int linesOfParagraph ( int para ) const
int lineOfChar ( int para, int index )
int length () const
QRect paragraphRect ( int para ) const
int paragraphAt ( const QPoint & pos ) const
int charAt ( const QPoint & pos, int * para ) const
int paragraphLength ( int para ) const
QStyleSheet * styleSheet () const
QMimeSourceFactory * mimeSourceFactory () const
QBrush paper () const
bool linkUnderline () const
virtual int heightForWidth ( int w ) const
bool hasSelectedText () const
QString selectedText () const
bool isUndoAvailable () const
bool isRedoAvailable () const
WordWrap wordWrap () const
int wrapColumnOrWidth () const
WrapPolicy wrapPolicy () const
int tabStopWidth () const
QString anchorAt ( const QPoint & pos )
QString anchorAt ( const QPoint & pos, AnchorAttribute attr )
bool isReadOnly () const
void getCursorPosition ( int * para, int * index ) const
bool isModified () const
bool italic () const
bool bold () const
bool underline () const
QString family () const
int pointSize () const
QColor color () const
QFont font () const (obsolete)
QFont currentFont () const
int alignment () const
int undoDepth () const
bool isOverwriteMode () const
QColor paragraphBackgroundColor ( int para ) const
bool isUndoRedoEnabled () const
bool tabChangesFocus () const
void setAutoFormatting ( uint features )
uint autoFormatting () const
QSyntaxHighlighter * syntaxHighlighter () const
Public Slots
virtual void setMimeSourceFactory ( QMimeSourceFactory * factory )
virtual void setStyleSheet ( QStyleSheet * styleSheet )
virtual void scrollToAnchor ( const QString & name )
virtual void setPaper ( const QBrush & pap )
virtual void setLinkUnderline ( bool )
virtual void setWordWrap ( WordWrap mode )
virtual void setWrapColumnOrWidth ( int )
virtual void setWrapPolicy ( WrapPolicy policy )
virtual void copy ()
virtual void append ( const QString & text )
void setText ( const QString & txt )
virtual void setText ( const QString & text, const QString & context )
virtual void setTextFormat ( TextFormat f )
virtual void selectAll ( bool select = TRUE )
virtual void setTabStopWidth ( int ts )
virtual void zoomIn ( int range )
virtual void zoomIn ()
virtual void zoomOut ( int range )
virtual void zoomOut ()
virtual void zoomTo ( int size )
virtual void sync ()
virtual void setReadOnly ( bool b )
virtual void undo ()
virtual void redo ()
virtual void cut ()
virtual void paste ()
virtual void pasteSubType ( const QCString & subtype )
virtual void clear ()
virtual void del ()
virtual void setItalic ( bool b )
virtual void setBold ( bool b )
virtual void setUnderline ( bool b )
virtual void setFamily ( const QString & fontFamily )
virtual void setPointSize ( int s )
virtual void setColor ( const QColor & c )
virtual void setVerticalAlignment ( VerticalAlignment a )
virtual void setAlignment ( int a )
virtual void setCursorPosition ( int para, int index )
virtual void setSelection ( int paraFrom, int indexFrom, int paraTo,
int indexTo, int selNum = 0 )
virtual void setSelectionAttributes ( int selNum, const QColor & back,
bool invertText )
virtual void setModified ( bool m )
virtual void setUndoDepth ( int d )
virtual void ensureCursorVisible ()
virtual void placeCursor ( const QPoint & pos, QTextCursor * c = 0 )
virtual void moveCursor ( CursorAction action, bool select )
virtual void doKeyboardAction ( KeyboardAction action )
virtual void removeSelectedText ( int selNum = 0 )
virtual void removeSelection ( int selNum = 0 )
virtual void setCurrentFont ( const QFont & f )
virtual void setOverwriteMode ( bool b )
virtual void scrollToBottom ()
void insert ( const QString & text, uint insertionFlags = CheckNewLines
| RemoveSelected )
virtual void insert ( const QString & text, bool indent, bool
checkNewLine = TRUE, bool removeSelected = TRUE ) (obsolete)
virtual void insertAt ( const QString & text, int para, int index )
virtual void removeParagraph ( int para )
virtual void insertParagraph ( const QString & text, int para )
virtual void setParagraphBackgroundColor ( int para, const QColor & bg
)
virtual void clearParagraphBackground ( int para )
virtual void setUndoRedoEnabled ( bool b )
void setTabChangesFocus ( bool b )
void setMaxLogLines ( int limit )
int maxLogLines ()
Signals
void textChanged ()
void selectionChanged ()
void copyAvailable ( bool yes )
void undoAvailable ( bool yes )
void redoAvailable ( bool yes )
void currentFontChanged ( const QFont & f )
void currentColorChanged ( const QColor & c )
void currentAlignmentChanged ( int a )
void currentVerticalAlignmentChanged ( VerticalAlignment a )
void cursorPositionChanged ( int para, int pos )
void returnPressed ()
void modificationChanged ( bool m )
void clicked ( int para, int pos )
void doubleClicked ( int para, int pos )
Properties
AutoFormatting autoFormatting - the enabled set of auto formatting
features
QString documentTitle - the title of the document parsed from the text
(read only)
bool hasSelectedText - whether some text is selected in selection 0
(read only)
int length - the number of characters in the text (read only)
bool linkUnderline - whether hypertext links will be underlined
bool modified - whether the document has been modified by the user
bool overwriteMode - the text edit's overwrite mode
QBrush paper - the background (paper) brush
bool readOnly - whether the text edit is read-only
QString selectedText - the selected text (from selection 0) or an empty
string if there is no currently selected text (in selection 0)
(read only)
bool tabChangesFocus - whether TAB changes focus or is accepted as
input
int tabStopWidth - the tab stop width in pixels
QString text - the text edit's text
TextFormat textFormat - the text format: rich text, plain text, log
text or auto text
int undoDepth - the depth of the undo history
bool undoRedoEnabled - whether undo/redo is enabled
WordWrap wordWrap - the word wrap mode
int wrapColumnOrWidth - the position (in pixels or columns depending on
the wrap mode) where text will be wrapped
WrapPolicy wrapPolicy - the word wrap policy, at whitespace or anywhere
Protected Members
void repaintChanged ()
virtual void keyPressEvent ( QKeyEvent * e )
virtual bool focusNextPrevChild ( bool n )
QTextCursor * textCursor () const
virtual QPopupMenu * createPopupMenu ( const QPoint & pos )
virtual QPopupMenu * createPopupMenu () (obsolete)
DESCRIPTION
The QTextEdit widget provides a powerful single-page rich text editor.
Introduction and Concepts
Using QTextEdit as a Display Widget
Read-only key bindings
Using QTextEdit in LogText Mode
Using QTextEdit as an Editor
Editing key bindings
Introduction and ConceptsQTextEdit is an advanced WYSIWYG viewer/editor supporting rich text
formatting using HTML-style tags. It is optimized to handle large
documents and to respond quickly to user input.
QTextEdit has four modes of operation: <center>.nf
</center>
<sup>1.</sup><small>A more complete API that supports setting margins,
images, etc., is planned for a later Qt release.</small>
QTextEdit can be used as a syntax highlighting editor when used in
conjunction with QSyntaxHighlighter.
We recommend that you always call setTextFormat() to set the mode you
want to use. If you use AutoText then setText() and append() will try
to determine whether the text they are given is plain text or rich
text. If you use RichText then setText() and append() will assume that
the text they are given is rich text. insert() simply inserts the text
it is given.
QTextEdit works on paragraphs and characters. A paragraph is a
formatted string which is word-wrapped to fit into the width of the
widget. By default when reading plain text, one newline signify a
paragraph. A document consists of zero or more paragraphs, indexed from
0. Characters are indexed on a per-paragraph basis, also indexed from
0. The words in the paragraph are aligned in accordance with the
paragraph's alignment(). Paragraphs are separated by hard line breaks.
Each character within a paragraph has its own attributes, for example,
font and color.
The text edit documentation uses the following concepts:
current format -- this is the format at the current cursor position,
and it is the format of the selected text if any.
current paragraph -- the paragraph which contains the cursor.
QTextEdit can display images (using QMimeSourceFactory), lists and
tables. If the text is too large to view within the text edit's
viewport, scrollbars will appear. The text edit can load both plain
text and HTML files (a subset of HTML 3.2 and 4). The rendering style
and the set of valid tags are defined by a styleSheet(). Custom tags
can be created and placed in a custom style sheet. Change the style
sheet with setStyleSheet(); see QStyleSheet for details. The images
identified by image tags are displayed if they can be interpreted using
the text edit's QMimeSourceFactory; see setMimeSourceFactory().
If you want a text browser with more navigation use QTextBrowser. If
you just need to display a small piece of rich text use QLabel or
QSimpleRichText.
If you create a new QTextEdit, and want to allow the user to edit rich
text, call setTextFormat(Qt::RichText) to ensure that the text is
treated as rich text. (Rich text uses HTML tags to set text formatting
attributes. See QStyleSheet for information on the HTML tags that are
supported.). If you don't call setTextFormat() explicitly the text edit
will guess from the text itself whether it is rich text or plain text.
This means that if the text looks like HTML or XML it will probably be
interpreted as rich text, so you should call
setTextFormat(Qt::PlainText) to preserve such text.
Note that we do not intend to add a full-featured web browser widget to
Qt (because that would easily double Qt's size and only a few
applications would benefit from it). The rich text support in Qt is
designed to provide a fast, portable and efficient way to add
reasonable online help facilities to applications, and to provide a
basis for rich text editors.
Using QTextEdit as a Display WidgetQTextEdit can display a large HTML subset, including tables and images.
The text is set or replaced using setText() which deletes any existing
text and replaces it with the text passed in the setText() call. If you
call setText() with legacy HTML (with setTextFormat(RichText) in
force), and then call text(), the text that is returned may have
different markup, but will render the same. Text can be inserted with
insert(), paste(), pasteSubType() and append(). Text that is appended
does not go into the undo history; this makes append() faster and
consumes less memory. Text can also be cut(). The entire text is
deleted with clear() and the selected text is deleted with
removeSelectedText(). Selected (marked) text can also be deleted with
del() (which will delete the character to the right of the cursor if no
text is selected).
Loading and saving text is achieved using setText() and text(), for
example:
QFile file( fileName ); // Read the text from a file
if ( file.open( IO_ReadOnly ) ) {
QTextStream stream( &file );
textEdit->setText( stream.read() );
}
QFile file( fileName ); // Write the text to a file
if ( file.open( IO_WriteOnly ) ) {
QTextStream stream( &file );
stream << textEdit->text();
textEdit->setModified( FALSE );
}
By default the text edit wraps words at whitespace to fit within the
text edit widget. The setWordWrap() function is used to specify the
kind of word wrap you want, or NoWrap if you don't want any wrapping.
Call setWordWrap() to set a fixed pixel width FixedPixelWidth, or
character column (e.g. 80 column) FixedColumnWidth with the pixels or
columns specified with setWrapColumnOrWidth(). If you use word wrap to
the widget's width WidgetWidth, you can specify whether to break on
whitespace or anywhere with setWrapPolicy().
The background color is set differently than other widgets, using
setPaper(). You specify a brush style which could be a plain color or a
complex pixmap.
Hypertext links are automatically underlined; this can be changed with
setLinkUnderline(). The tab stop width is set with setTabStopWidth().
The zoomIn() and zoomOut() functions can be used to resize the text by
increasing (decreasing for zoomOut()) the point size used. Images are
not affected by the zoom functions.
The lines() function returns the number of lines in the text and
paragraphs() returns the number of paragraphs. The number of lines
within a particular paragraph is returned by linesOfParagraph(). The
length of the entire text in characters is returned by length().
You can scroll to an anchor in the text, e.g. <a name="anchor"> with
scrollToAnchor(). The find() function can be used to find and select a
given string within the text.
A read-only QTextEdit provides the same functionality as the (obsolete)
QTextView. (QTextView is still supplied for compatibility with old
code.)
<h4> Read-only key bindings </h4>
When QTextEdit is used read-only the key-bindings are limited to
navigation, and text may only be selected with the mouse: <center>.nf
</center>
The text edit may be able to provide some meta-information. For
example, the documentTitle() function will return the text from within
HTML <title> tags.
The text displayed in a text edit has a context. The context is a path
which the text edit's QMimeSourceFactory uses to resolve the locations
of files and images. It is passed to the mimeSourceFactory() when
quering data. (See QTextEdit() and context().)
<h4> Using QTextEdit in LogText Mode </h4>
Setting the text format to LogText puts the widget in a special mode
which is optimized for very large texts. Editing, word wrap, and rich
text support are disabled in this mode (the widget is explicitly made
read-only). This allows the text to be stored in a different, more
memory efficient manner. However, a certain degree of text formatting
is supported through the use of formatting tags. A tag is delimited by
< and >. The characters <, > and & are escaped by using <, > and
&. A tag pair consists of a left and a right tag (or open/close
tags). Left-tags mark the starting point for formatting, while right-
tags mark the ending point. A right-tag always start with a / before
the tag keyword. For example <b> and </b> are a tag pair. Tags can be
nested, but they have to be closed in the same order as they are
opened. For example, <b><u></u></b> is valid, while <b><u></b></u> will
output an error message.
By using tags it is possible to change the color, bold, italic and
underline settings for a piece of text. A color can be specified by
using the HTML font tag <font color=colorname>. The color name can be
one of the color names from the X11 color database, or a RGB hex value
(e.g #00ff00). Example of valid color tags: <font color=red>, <font
color="light blue">, <font color="#223344">. Bold, italic and underline
settings can be specified by the tags <b>, <i> and <u>. Note that a tag
does not necessarily have to be closed. A valid example:
This is <font color=red>red</font> while <b>this</b> is <font color=blue>blue</font>.
<font color=green><font color=yellow>Yellow,</font> and <u>green</u>.
Stylesheets can also be used in LogText mode. To create and use a
custom tag, you could do the following:
QTextEdit * log = new QTextEdit( this );
log->setTextFormat( Qt::LogText );
QStyleSheetItem * item = new QStyleSheetItem( log->styleSheet(), "mytag" );
item->setColor( "red" );
item->setFontWeight( QFont::Bold );
item->setFontUnderline( TRUE );
log->append( "This is a <mytag>custom tag</mytag>!" );
Note that only the color, bold, underline and italic attributes of a
QStyleSheetItem is used in LogText mode.
Note that you can use setMaxLogLines() to limit the number of lines the
widget can hold in LogText mode.
There are a few things that you need to be aware of when the widget is
in this mode:
Functions that deal with rich text formatting and cursor movement will
not work or return anything valid.
Lines are equivalent to paragraphs.
Using QTextEdit as an Editor
All the information about using QTextEdit as a display widget also
applies here.
The current format's attributes are set with setItalic(), setBold(),
setUnderline(), setFamily() (font family), setPointSize(), setColor()
and setCurrentFont(). The current paragraph's alignment is set with
setAlignment().
Use setSelection() to select text. The setSelectionAttributes()
function is used to indicate how selected text should be displayed. Use
hasSelectedText() to find out if any text is selected. The currently
selected text's position is available using getSelection() and the
selected text itself is returned by selectedText(). The selection can
be copied to the clipboard with copy(), or cut to the clipboard with
cut(). It can be deleted with removeSelectedText(). The entire text can
be selected (or unselected) using selectAll(). QTextEdit supports
multiple selections. Most of the selection functions operate on the
default selection, selection 0. If the user presses a non-selecting
key, e.g. a cursor key without also holding down Shift, all selections
are cleared.
Set and get the position of the cursor with setCursorPosition() and
getCursorPosition() respectively. When the cursor is moved, the signals
currentFontChanged(), currentColorChanged() and
currentAlignmentChanged() are emitted to reflect the font, color and
alignment at the new cursor position.
If the text changes, the textChanged() signal is emitted, and if the
user inserts a new line by pressing Return or Enter, returnPressed() is
emitted. The isModified() function will return TRUE if the text has
been modified.
QTextEdit provides command-based undo and redo. To set the depth of the
command history use setUndoDepth() which defaults to 100 steps. To undo
or redo the last operation call undo() or redo(). The signals
undoAvailable() and redoAvailable() indicate whether the undo and redo
operations can be executed.
The indent() function is used to reindent a paragraph. It is useful for
code editors, for example in Qt Designer's code editor Ctrl+I invokes
the indent() function.
<h4> Editing key bindings </h4>
The list of key-bindings which are implemented for editing: <center>.nf
</center>
To select (mark) text hold down the Shift key whilst pressing one of
the movement keystrokes, for example, Shift+Right Arrow will select the
character to the right, and Shift+Ctrl+Right Arrow will select the word
to the right, etc.
By default the text edit widget operates in insert mode so all text
that the user enters is inserted into the text edit and any text to the
right of the cursor is moved out of the way. The mode can be changed to
overwrite, where new text overwrites any text to the right of the
cursor, using setOverwriteMode().
See also Basic Widgets and Text Related Classes.
Member Type Documentation
QTextEdit::AutoFormatting
QTextEdit::AutoNone - Do not perform any automatic formatting
QTextEdit::AutoBulletList - Only automatically format bulletted lists
QTextEdit::AutoAll - Apply all available autoformatting
QTextEdit::CursorAction
This enum is used by moveCursor() to specify in which direction the
cursor should be moved:
QTextEdit::MoveBackward - Moves the cursor one character backward
QTextEdit::MoveWordBackward - Moves the cursor one word backward
QTextEdit::MoveForward - Moves the cursor one character forward
QTextEdit::MoveWordForward - Moves the cursor one word forward
QTextEdit::MoveUp - Moves the cursor up one line
QTextEdit::MoveDown - Moves the cursor down one line
QTextEdit::MoveLineStart - Moves the cursor to the beginning of the
line
QTextEdit::MoveLineEnd - Moves the cursor to the end of the line
QTextEdit::MoveHome - Moves the cursor to the beginning of the document
QTextEdit::MoveEnd - Moves the cursor to the end of the document
QTextEdit::MovePgUp - Moves the cursor one viewport page up
QTextEdit::MovePgDown - Moves the cursor one viewport page down
QTextEdit::KeyboardAction
This enum is used by doKeyboardAction() to specify which action should
be executed:
QTextEdit::ActionBackspace - Delete the character to the left of the
cursor.
QTextEdit::ActionDelete - Delete the character to the right of the
cursor.
QTextEdit::ActionReturn - Split the paragraph at the cursor position.
QTextEdit::ActionKill - If the cursor is not at the end of the
paragraph, delete the text from the cursor position until the end of
the paragraph. If the cursor is at the end of the paragraph, delete the
hard line break at the end of the paragraph: this will cause this
paragraph to be joined with the following paragraph.
QTextEdit::ActionWordBackspace - Delete the word to the left of the
cursor position.
QTextEdit::ActionWordDelete - Delete the word to the right of the
cursor position
QTextEdit::VerticalAlignment
This enum is used to set the vertical alignment of the text.
QTextEdit::AlignNormal - Normal alignment
QTextEdit::AlignSuperScript - Superscript
QTextEdit::AlignSubScript - Subscript
QTextEdit::WordWrap
This enum defines the QTextEdit's word wrap modes.
QTextEdit::NoWrap - Do not wrap the text.
QTextEdit::WidgetWidth - Wrap the text at the current width of the
widget (this is the default). Wrapping is at whitespace by default;
this can be changed with setWrapPolicy().
QTextEdit::FixedPixelWidth - Wrap the text at a fixed number of pixels
from the widget's left side. The number of pixels is set with
wrapColumnOrWidth().
QTextEdit::FixedColumnWidth - Wrap the text at a fixed number of
character columns from the widget's left side. The number of characters
is set with wrapColumnOrWidth(). This is useful if you need formatted
text that can also be displayed gracefully on devices with monospaced
fonts, for example a standard VT100 terminal, where you might set
wrapColumnOrWidth() to 80.
See also wordWrap and wordWrap.
QTextEdit::WrapPolicy
This enum defines where text can be wrapped in word wrap mode.
QTextEdit::AtWhiteSpace - Don't use this deprecated value (it is a
synonym for AtWordBoundary which you should use instead).
QTextEdit::Anywhere - Break anywhere, including within words.
QTextEdit::AtWordBoundary - Break lines at word boundaries, e.g. spaces
or newlines
QTextEdit::AtWordOrDocumentBoundary - Break lines at whitespace, e.g.
spaces or newlines if possible. Break it anywhere otherwise.
See also wrapPolicy.
MEMBER FUNCTION DOCUMENTATIONQTextEdit::QTextEdit ( const QString & text, const QString & context =
QString::null, QWidget * parent = 0, const char * name = 0 )
Constructs a QTextEdit called name, with parent parent. The text edit
will display the text text using context context.
The context is a path which the text edit's QMimeSourceFactory uses to
resolve the locations of files and images. It is passed to the
mimeSourceFactory() when quering data.
For example if the text contains an image tag, <img src="image.png">,
and the context is "path/to/look/in", the QMimeSourceFactory will try
to load the image from" path/to/look/in/image.png". If the tag was <img
src="/image.png">, the context will not be used (because
QMimeSourceFactory recognizes that we have used an absolute path) and
will try to load "/image.png". The context is applied in exactly the
same way to hrefs, for example, <a href="target.html">Target</a>, would
resolve to" path/to/look/in/target.html".
QTextEdit::QTextEdit ( QWidget * parent = 0, const char * name = 0 )
Constructs an empty QTextEdit called name, with parent parent.
int QTextEdit::alignment () const
Returns the alignment of the current paragraph.
See also setAlignment().
QString QTextEdit::anchorAt ( const QPoint & pos, AnchorAttribute attr )
If there is an anchor at position pos (in contents coordinates), the
text for attribute attr is returned, otherwise QString::null is
returned.
QString QTextEdit::anchorAt ( const QPoint & pos )
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
If there is an anchor at position pos (in contents coordinates), its
href is returned, otherwise QString::null is returned.
void QTextEdit::append ( const QString & text ) [virtual slot]
Appends a new paragraph with text to the end of the text edit. Note
that the undo/redo history is cleared by this function, and no undo
history is kept for appends which makes them faster than insert()s. If
you want to append text which is added to the undo/redo history as
well, use insertParagraph().
Examples:
uint QTextEdit::autoFormatting () const
Returns the enabled set of auto formatting features. See the
"autoFormatting" property for details.
bool QTextEdit::bold () const
Returns TRUE if the current format is bold; otherwise returns FALSE.
See also setBold().
int QTextEdit::charAt ( const QPoint & pos, int * para ) const
Returns the index of the character (relative to its paragraph) at
position pos (in contents coordinates). If para is not 0, *para is set
to the character's paragraph.
void QTextEdit::clear () [virtual slot]
Deletes all the text in the text edit.
See also cut(), removeSelectedText(), and text.
void QTextEdit::clearParagraphBackground ( int para ) [virtual slot]
Clears the background color of the paragraph para, so that the default
color is used again.
void QTextEdit::clicked ( int para, int pos ) [signal]
This signal is emitted when the mouse is clicked on the paragraph para
at character position pos.
See also doubleClicked().
QColor QTextEdit::color () const
Returns the color of the current format.
See also setColor() and paper.
QString QTextEdit::context () const
Returns the context of the text edit. The context is a path which the
text edit's QMimeSourceFactory uses to resolve the locations of files
and images.
See also text.
Examples:
void QTextEdit::copy () [virtual slot]
Copies any selected text (from selection 0) to the clipboard.
See also hasSelectedText and copyAvailable().
void QTextEdit::copyAvailable ( bool yes ) [signal]
This signal is emitted when text is selected or de-selected in the text
edit.
When text is selected this signal will be emitted with yes set to TRUE.
If no text has been selected or if the selected text is de-selected
this signal is emitted with yes set to FALSE.
If yes is TRUE then copy() can be used to copy the selection to the
clipboard. If yes is FALSE then copy() does nothing.
See also selectionChanged().
QPopupMenu * QTextEdit::createPopupMenu ( const QPoint & pos ) [virtual
protected]
This function is called to create a right mouse button popup menu at
the document position pos. If you want to create a custom popup menu,
reimplement this function and return the created popup menu. Ownership
of the popup menu is transferred to the caller.
Warning: The QPopupMenu ID values 0-7 are reserved, and they map to the
standard operations. When inserting items into your custom popup menu,
be sure to specify ID values larger than 7.
QPopupMenu * QTextEdit::createPopupMenu () [virtual protected]
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
This function is obsolete. It is provided to keep old source working.
We strongly advise against using it in new code.
This function is called to create a right mouse button popup menu. If
you want to create a custom popup menu, reimplement this function and
return the created popup menu. Ownership of the popup menu is
transferred to the caller.
This function is only called if createPopupMenu( const QPoint & )
returns 0.
void QTextEdit::currentAlignmentChanged ( int a ) [signal]
This signal is emitted if the alignment of the current paragraph has
changed.
The new alignment is a.
See also setAlignment().
void QTextEdit::currentColorChanged ( const QColor & c ) [signal]
This signal is emitted if the color of the current format has changed.
The new color is c.
See also setColor().
QFont QTextEdit::currentFont () const
Returns the font of the current format.
See also setCurrentFont(), setFamily(), and setPointSize().
void QTextEdit::currentFontChanged ( const QFont & f ) [signal]
This signal is emitted if the font of the current format has changed.
The new font is f.
See also setCurrentFont().
void QTextEdit::currentVerticalAlignmentChanged ( VerticalAlignment a )
[signal]
This signal is emitted if the vertical alignment of the current format
has changed.
The new vertical alignment is a.
See also setVerticalAlignment().
void QTextEdit::cursorPositionChanged ( int para, int pos ) [signal]
This signal is emitted if the position of the cursor has changed. para
contains the paragraph index and pos contains the character position
within the paragraph.
See also setCursorPosition().
void QTextEdit::cut () [virtual slot]
Copies the selected text (from selection 0) to the clipboard and
deletes it from the text edit.
If there is no selected text (in selection 0) nothing happens.
See also QTextEdit::copy(), paste(), and pasteSubType().
void QTextEdit::del () [virtual slot]
If there is some selected text (in selection 0) it is deleted. If there
is no selected text (in selection 0) the character to the right of the
text cursor is deleted.
See also removeSelectedText() and cut().
void QTextEdit::doKeyboardAction ( KeyboardAction action ) [virtual slot]
Executes keyboard action action. This is normally called by a key event
handler.
QString QTextEdit::documentTitle () const
Returns the title of the document parsed from the text. See the
"documentTitle" property for details.
void QTextEdit::doubleClicked ( int para, int pos ) [signal]
This signal is emitted when the mouse is double-clicked on the
paragraph para at character position pos.
See also clicked().
void QTextEdit::ensureCursorVisible () [virtual slot]
Ensures that the cursor is visible by scrolling the text edit if
necessary.
See also setCursorPosition().
QString QTextEdit::family () const
Returns the font family of the current format.
See also setFamily(), setCurrentFont(), and setPointSize().
bool QTextEdit::find ( const QString & expr, bool cs, bool wo, bool forward =
TRUE, int * para = 0, int * index = 0 ) [virtual]
Finds the next occurrence of the string, expr. Returns TRUE if expr was
found; otherwise returns FALSE.
If para and index are both 0 the search begins from the current cursor
position. If para and index are both not 0, the search begins from the
*index character position in the *para paragraph.
If cs is TRUE the search is case sensitive, otherwise it is case
insensitive. If wo is TRUE the search looks for whole word matches
only; otherwise it searches for any matching text. If forward is TRUE
(the default) the search works forward from the starting position to
the end of the text, otherwise it works backwards to the beginning of
the text.
If expr is found the function returns TRUE. If index and para are not
0, the number of the paragraph in which the first character of the
match was found is put into *para, and the index position of that
character within the paragraph is put into *index.
If expr is not found the function returns FALSE. If index and para are
not 0 and expr is not found, *index and *para are undefined.
Please note that this function will make the next occurrence of the
string (if found) the current selection, and will thus modify the
cursor position.
Using the para and index parameters will not work correctly in case the
document contains tables.
bool QTextEdit::focusNextPrevChild ( bool n ) [virtual protected]
Reimplemented to allow tabbing through links. If n is TRUE the tab
moves the focus to the next child; if n is FALSE the tab moves the
focus to the previous child. Returns TRUE if the focus was moved;
otherwise returns FALSE.
QFont QTextEdit::font () const
This function is obsolete. It is provided to keep old source working.
We strongly advise against using it in new code.
Returns QScrollView::font()
Warning: In previous versions this function returned the font of the
current format. This lead to confusion. Please use currentFont()
instead.
Example: qwerty/qwerty.cpp.
void QTextEdit::getCursorPosition ( int * para, int * index ) const
This function sets the *para and *index parameters to the current
cursor position. para and index must not be 0.
See also setCursorPosition().
void QTextEdit::getSelection ( int * paraFrom, int * indexFrom, int * paraTo,
int * indexTo, int selNum = 0 ) const
If there is a selection, *paraFrom is set to the number of the
paragraph in which the selection begins and *paraTo is set to the
number of the paragraph in which the selection ends. (They could be the
same.) *indexFrom is set to the index at which the selection begins
within *paraFrom, and *indexTo is set to the index at which the
selection ends within *paraTo.
If there is no selection, *paraFrom, *indexFrom, *paraTo and *indexTo
are all set to -1.
If paraFrom, indexFrom, paraTo or indexTo is 0 this function does
nothing.
The selNum is the number of the selection (multiple selections are
supported). It defaults to 0 (the default selection).
See also setSelection() and selectedText.
bool QTextEdit::hasSelectedText () const
Returns TRUE if some text is selected in selection 0; otherwise returns
FALSE. See the "hasSelectedText" property for details.
int QTextEdit::heightForWidth ( int w ) const [virtual]
Returns how many pixels high the text edit needs to be to display all
the text if the text edit is w pixels wide.
Reimplemented from QWidget.
void QTextEdit::insert ( const QString & text, uint insertionFlags =
CheckNewLines | RemoveSelected ) [slot]
Inserts text at the current cursor position.
The insertionFlags define how the text is inserted. If RedoIndentation
is set, the paragraph is re-indented. If CheckNewLines is set, newline
characters in text result in hard line breaks (i.e. new paragraphs). If
checkNewLine is not set, the behaviour of the editor is undefined if
the text contains newlines. (It is not possible to change QTextEdit's
newline handling behavior, but you can use QString::replace() to
preprocess text before inserting it.) If RemoveSelected is set, any
selected text (in selection 0) is removed before the text is inserted.
The default flags are CheckNewLines | RemoveSelected.
If the widget is in LogText mode this function will do nothing.
See also paste() and pasteSubType().
void QTextEdit::insert ( const QString & text, bool indent, bool checkNewLine
= TRUE, bool removeSelected = TRUE ) [virtual slot]
This function is obsolete. It is provided to keep old source working.
We strongly advise against using it in new code.
void QTextEdit::insertAt ( const QString & text, int para, int index )
[virtual slot]
Inserts text in the paragraph para at position index.
void QTextEdit::insertParagraph ( const QString & text, int para ) [virtual
slot]
Inserts text as a new paragraph at position para. If para is -1, the
text is appended. Use append() if the append operation is performance
critical.
bool QTextEdit::isModified () const
Returns TRUE if the document has been modified by the user; otherwise
returns FALSE. See the "modified" property for details.
bool QTextEdit::isOverwriteMode () const
Returns the text edit's overwrite mode. See the "overwriteMode"
property for details.
bool QTextEdit::isReadOnly () const
Returns TRUE if the text edit is read-only; otherwise returns FALSE.
See the "readOnly" property for details.
bool QTextEdit::isRedoAvailable () const
Returns TRUE if redo is available; otherwise returns FALSE.
bool QTextEdit::isUndoAvailable () const
Returns TRUE if undo is available; otherwise returns FALSE.
bool QTextEdit::isUndoRedoEnabled () const
Returns TRUE if undo/redo is enabled; otherwise returns FALSE. See the
"undoRedoEnabled" property for details.
bool QTextEdit::italic () const
Returns TRUE if the current format is italic; otherwise returns FALSE.
See also setItalic().
void QTextEdit::keyPressEvent ( QKeyEvent * e ) [virtual protected]
Processes the key event, e. By default key events are used to provide
keyboard navigation and text editing.
Reimplemented from QWidget.
Reimplemented in QTextBrowser.
int QTextEdit::length () const
Returns the number of characters in the text. See the "length" property
for details.
int QTextEdit::lineOfChar ( int para, int index )
Returns the line number of the line in paragraph para in which the
character at position index appears. The index position is relative to
the beginning of the paragraph. If there is no such paragraph or no
such character at the index position (e.g. the index is out of range)
-1 is returned.
int QTextEdit::lines () const
Returns the number of lines in the text edit; this could be 0.
Warning: This function may be slow. Lines change all the time during
word wrapping, so this function has to iterate over all the paragraphs
and get the number of lines from each one individually.
int QTextEdit::linesOfParagraph ( int para ) const
Returns the number of lines in paragraph para, or -1 if there is no
paragraph with index para.
bool QTextEdit::linkUnderline () const
Returns TRUE if hypertext links will be underlined; otherwise returns
FALSE. See the "linkUnderline" property for details.
int QTextEdit::maxLogLines () [slot]
Returns the maximum number of lines QTextEdit can hold in LogText mode.
By default the number of lines is unlimited, which is signified by a
value of -1.
QMimeSourceFactory * QTextEdit::mimeSourceFactory () const
Returns the QMimeSourceFactory which is being used by this text edit.
See also setMimeSourceFactory().
Examples:
void QTextEdit::modificationChanged ( bool m ) [signal]
This signal is emitted when the modification status of the document has
changed. If m is TRUE, the document was modified, otherwise the
modification state has been reset to unmodified.
See also modified.
void QTextEdit::moveCursor ( CursorAction action, bool select ) [virtual slot]
Moves the text cursor according to action. This is normally used by
some key event handler. select specifies whether the text between the
current cursor position and the new position should be selected.
QBrush QTextEdit::paper () const
Returns the background (paper) brush. See the "paper" property for
details.
int QTextEdit::paragraphAt ( const QPoint & pos ) const
Returns the paragraph which is at position pos (in contents
coordinates).
QColor QTextEdit::paragraphBackgroundColor ( int para ) const
Returns the background color of the paragraph para or an invalid color
if para is out of range or the paragraph has no background set
int QTextEdit::paragraphLength ( int para ) const
Returns the length of the paragraph para (i.e. the number of
characters), or -1 if there is no paragraph with index para.
This function ignores newlines.
QRect QTextEdit::paragraphRect ( int para ) const
Returns the rectangle of the paragraph para in contents coordinates, or
an invalid rectangle if para is out of range.
int QTextEdit::paragraphs () const
Returns the number of paragraphs in the text; an empty textedit is
always considered to have one paragraph, so 1 is returned in this case.
void QTextEdit::paste () [virtual slot]
Pastes the text from the clipboard into the text edit at the current
cursor position. Only plain text is pasted.
If there is no text in the clipboard nothing happens.
See also pasteSubType(), cut(), and QTextEdit::copy().
void QTextEdit::pasteSubType ( const QCString & subtype ) [virtual slot]
Pastes the text with format subtype from the clipboard into the text
edit at the current cursor position. The subtype can be" plain" or
"html".
If there is no text with format subtype in the clipboard nothing
happens.
See also paste(), cut(), and QTextEdit::copy().
void QTextEdit::placeCursor ( const QPoint & pos, QTextCursor * c = 0 )
[virtual slot]
Places the cursor c at the character which is closest to position pos
(in contents coordinates). If c is 0, the default text cursor is used.
See also setCursorPosition().
int QTextEdit::pointSize () const
Returns the point size of the font of the current format.
See also setFamily(), setCurrentFont(), and setPointSize().
void QTextEdit::redo () [virtual slot]
Redoes the last operation.
If there is no operation to redo, i.e. there is no redo step in the
undo/redo history, nothing happens.
See also redoAvailable(), undo(), and undoDepth.
void QTextEdit::redoAvailable ( bool yes ) [signal]
This signal is emitted when the availability of redo changes. If yes is
TRUE, then redo() will work until redoAvailable( FALSE ) is next
emitted.
See also redo() and undoDepth.
void QTextEdit::removeParagraph ( int para ) [virtual slot]
Removes the paragraph para.
void QTextEdit::removeSelectedText ( int selNum = 0 ) [virtual slot]
Deletes the text of selection selNum (by default, the default
selection, 0). If there is no selected text nothing happens.
See also selectedText and removeSelection().
void QTextEdit::removeSelection ( int selNum = 0 ) [virtual slot]
Removes the selection selNum (by default 0). This does not remove the
selected text.
See also removeSelectedText().
void QTextEdit::repaintChanged () [protected]
Repaints any paragraphs that have changed.
Although used extensively internally you shouldn't need to call this
yourself.
void QTextEdit::returnPressed () [signal]
This signal is emitted if the user pressed the Return or the Enter key.
void QTextEdit::scrollToAnchor ( const QString & name ) [virtual slot]
Scrolls the text edit to make the text at the anchor called name
visible, if it can be found in the document. If the anchor isn't found
no scrolling will occur. An anchor is defined using the HTML anchor
tag, e.g. <a name="target">.
void QTextEdit::scrollToBottom () [virtual slot]
Scrolls to the bottom of the document and does formatting if required.
void QTextEdit::selectAll ( bool select = TRUE ) [virtual slot]
If select is TRUE (the default), all the text is selected as selection
0. If select is FALSE any selected text is unselected, i.e. the default
selection (selection 0) is cleared.
See also selectedText.
QString QTextEdit::selectedText () const
Returns the selected text (from selection 0) or an empty string if
there is no currently selected text (in selection 0). See the
"selectedText" property for details.
void QTextEdit::selectionChanged () [signal]
This signal is emitted whenever the selection changes.
See also setSelection() and copyAvailable().
void QTextEdit::setAlignment ( int a ) [virtual slot]
Sets the alignment of the current paragraph to a. Valid alignments are
Qt::AlignLeft, Qt::AlignRight, Qt::AlignJustify and Qt::AlignCenter
(which centers horizontally).
Reimplemented in QMultiLineEdit.
void QTextEdit::setAutoFormatting ( uint features )
Sets the enabled set of auto formatting features to features. See the
"autoFormatting" property for details.
void QTextEdit::setBold ( bool b ) [virtual slot]
If b is TRUE sets the current format to bold; otherwise sets the
current format to non-bold.
See also bold().
void QTextEdit::setColor ( const QColor & c ) [virtual slot]
Sets the color of the current format, i.e. of the text, to c.
See also color() and paper.
void QTextEdit::setCurrentFont ( const QFont & f ) [virtual slot]
Sets the font of the current format to f.
If the widget is in LogText mode this function will do nothing. Use
setFont() instead.
See also currentFont(), setPointSize(), and setFamily().
void QTextEdit::setCursorPosition ( int para, int index ) [virtual slot]
Sets the cursor to position index in paragraph para.
See also getCursorPosition().
void QTextEdit::setFamily ( const QString & fontFamily ) [virtual slot]
Sets the font family of the current format to fontFamily.
See also family() and setCurrentFont().
void QTextEdit::setItalic ( bool b ) [virtual slot]
If b is TRUE sets the current format to italic; otherwise sets the
current format to non-italic.
See also italic().
void QTextEdit::setLinkUnderline ( bool ) [virtual slot]
Sets whether hypertext links will be underlined. See the
"linkUnderline" property for details.
void QTextEdit::setMaxLogLines ( int limit ) [slot]
Sets the maximum number of lines a QTextEdit can hold in LogText mode
to limit. If limit is -1 (the default), this signifies an unlimited
number of lines.
Warning: Never use formatting tags that span more than one line when
the maximum log lines is set. When lines are removed from the top of
the buffer it could result in an unbalanced tag pair, i.e. the left
formatting tag is removed before the right one.
void QTextEdit::setMimeSourceFactory ( QMimeSourceFactory * factory ) [virtual
slot]
Sets the text edit's mimesource factory to factory. See
QMimeSourceFactory for further details.
See also mimeSourceFactory().
void QTextEdit::setModified ( bool m ) [virtual slot]
Sets whether the document has been modified by the user to m. See the
"modified" property for details.
void QTextEdit::setOverwriteMode ( bool b ) [virtual slot]
Sets the text edit's overwrite mode to b. See the "overwriteMode"
property for details.
void QTextEdit::setPaper ( const QBrush & pap ) [virtual slot]
Sets the background (paper) brush to pap. See the "paper" property for
details.
void QTextEdit::setParagraphBackgroundColor ( int para, const QColor & bg )
[virtual slot]
Sets the background color of the paragraph para to bg.
void QTextEdit::setPointSize ( int s ) [virtual slot]
Sets the point size of the current format to s.
Note that if s is zero or negative, the behaviour of this function is
not defined.
See also pointSize(), setCurrentFont(), and setFamily().
void QTextEdit::setReadOnly ( bool b ) [virtual slot]
Sets whether the text edit is read-only to b. See the "readOnly"
property for details.
void QTextEdit::setSelection ( int paraFrom, int indexFrom, int paraTo, int
indexTo, int selNum = 0 ) [virtual slot]
Sets a selection which starts at position indexFrom in paragraph
paraFrom and ends at position indexTo in paragraph paraTo.
Any existing selections which have a different id (selNum) are left
alone, but if an existing selection has the same id as selNum it is
removed and replaced by this selection.
Uses the selection settings of selection selNum. If selNum is 0, this
is the default selection.
The cursor is moved to the end of the selection if selNum is 0,
otherwise the cursor position remains unchanged.
See also getSelection() and selectedText.
void QTextEdit::setSelectionAttributes ( int selNum, const QColor & back, bool
invertText ) [virtual slot]
Sets the background color of selection number selNum to back and
specifies whether the text of this selection should be inverted with
invertText.
This only works for selNum > 0. The default selection (selNum == 0)
gets its attributes from the text edit's colorGroup().
void QTextEdit::setStyleSheet ( QStyleSheet * styleSheet ) [virtual slot]
Sets the stylesheet to use with this text edit to styleSheet. Changes
will only take effect for new text added with setText() or append().
See also styleSheet().
void QTextEdit::setTabChangesFocus ( bool b ) [slot]
Sets whether TAB changes focus or is accepted as input to b. See the
"tabChangesFocus" property for details.
void QTextEdit::setTabStopWidth ( int ts ) [virtual slot]
Sets the tab stop width in pixels to ts. See the "tabStopWidth"
property for details.
void QTextEdit::setText ( const QString & txt ) [slot]
Sets the text edit's text to txt. See the "text" property for details.
void QTextEdit::setText ( const QString & text, const QString & context )
[virtual slot]
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
Changes the text of the text edit to the string text and the context to
context. Any previous text is removed.
text may be interpreted either as plain text or as rich text, depending
on the textFormat(). The default setting is AutoText, i.e. the text
edit auto-detects the format from text.
For rich text the rendering style and available tags are defined by a
styleSheet(); see QStyleSheet for details.
The optional context is a path which the text edit's QMimeSourceFactory
uses to resolve the locations of files and images. (See
QTextEdit::QTextEdit().) It is passed to the text edit's
QMimeSourceFactory when quering data.
Note that the undo/redo history is cleared by this function.
See also text and textFormat.
void QTextEdit::setTextFormat ( TextFormat f ) [virtual slot]
Sets the text format: rich text, plain text, log text or auto text to
f. See the "textFormat" property for details.
void QTextEdit::setUnderline ( bool b ) [virtual slot]
If b is TRUE sets the current format to underline; otherwise sets the
current format to non-underline.
See also underline().
void QTextEdit::setUndoDepth ( int d ) [virtual slot]
Sets the depth of the undo history to d. See the "undoDepth" property
for details.
void QTextEdit::setUndoRedoEnabled ( bool b ) [virtual slot]
Sets whether undo/redo is enabled to b. See the "undoRedoEnabled"
property for details.
void QTextEdit::setVerticalAlignment ( VerticalAlignment a ) [virtual slot]
Sets the vertical alignment of the current format, i.e. of the text, to
a.
See also color() and paper.
void QTextEdit::setWordWrap ( WordWrap mode ) [virtual slot]
Sets the word wrap mode to mode. See the "wordWrap" property for
details.
void QTextEdit::setWrapColumnOrWidth ( int ) [virtual slot]
Sets the position (in pixels or columns depending on the wrap mode)
where text will be wrapped. See the "wrapColumnOrWidth" property for
details.
void QTextEdit::setWrapPolicy ( WrapPolicy policy ) [virtual slot]
Sets the word wrap policy, at whitespace or anywhere to policy. See the
"wrapPolicy" property for details.
QStyleSheet * QTextEdit::styleSheet () const
Returns the QStyleSheet which is being used by this text edit.
See also setStyleSheet().
Examples:
void QTextEdit::sync () [virtual slot]
QTextEdit is optimized for large amounts text. One of its optimizations
is to format only the visible text, formatting the rest on demand, e.g.
as the user scrolls, so you don't usually need to call this function.
In some situations you may want to force the whole text to be
formatted. For example, if after calling setText(), you wanted to know
the height of the document (using contentsHeight()), you would call
this function first.
QSyntaxHighlighter * QTextEdit::syntaxHighlighter () const
Returns the QSyntaxHighlighter set on this QTextEdit. 0 is returned if
no syntax highlighter is set.
bool QTextEdit::tabChangesFocus () const
Returns TRUE if TAB changes focus or is accepted as input; otherwise
returns FALSE. See the "tabChangesFocus" property for details.
int QTextEdit::tabStopWidth () const
Returns the tab stop width in pixels. See the "tabStopWidth" property
for details.
QString QTextEdit::text () const
Returns the text edit's text. See the "text" property for details.
QString QTextEdit::text ( int para ) const
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
Returns the text of paragraph para.
If textFormat() is RichText the text will contain HTML formatting tags.
void QTextEdit::textChanged () [signal]
This signal is emitted whenever the text in the text edit changes.
See also text and append().
Examples:
QTextCursor * QTextEdit::textCursor () const [protected]
Returns the text edit's text cursor.
Warning: QTextCursor is not in the public API, but in special
circumstances you might wish to use it.
TextFormat QTextEdit::textFormat () const
Returns the text format: rich text, plain text, log text or auto text.
See the "textFormat" property for details.
bool QTextEdit::underline () const
Returns TRUE if the current format is underlined; otherwise returns
FALSE.
See also setUnderline().
void QTextEdit::undo () [virtual slot]
Undoes the last operation.
If there is no operation to undo, i.e. there is no undo step in the
undo/redo history, nothing happens.
See also undoAvailable(), redo(), and undoDepth.
void QTextEdit::undoAvailable ( bool yes ) [signal]
This signal is emitted when the availability of undo changes. If yes is
TRUE, then undo() will work until undoAvailable( FALSE ) is next
emitted.
See also undo() and undoDepth.
int QTextEdit::undoDepth () const
Returns the depth of the undo history. See the "undoDepth" property for
details.
WordWrap QTextEdit::wordWrap () const
Returns the word wrap mode. See the "wordWrap" property for details.
int QTextEdit::wrapColumnOrWidth () const
Returns the position (in pixels or columns depending on the wrap mode)
where text will be wrapped. See the "wrapColumnOrWidth" property for
details.
WrapPolicy QTextEdit::wrapPolicy () const
Returns the word wrap policy, at whitespace or anywhere. See the
"wrapPolicy" property for details.
void QTextEdit::zoomIn ( int range ) [virtual slot]
Zooms in on the text by making the base font size range points larger
and recalculating all font sizes to be the new size. This does not
change the size of any images.
See also zoomOut().
void QTextEdit::zoomIn () [virtual slot]
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
Zooms in on the text by making the base font size one point larger and
recalculating all font sizes to be the new size. This does not change
the size of any images.
See also zoomOut().
void QTextEdit::zoomOut ( int range ) [virtual slot]
Zooms out on the text by making the base font size range points smaller
and recalculating all font sizes to be the new size. This does not
change the size of any images.
See also zoomIn().
void QTextEdit::zoomOut () [virtual slot]
This is an overloaded member function, provided for convenience. It
behaves essentially like the above function.
Zooms out on the text by making the base font size one point smaller
and recalculating all font sizes to be the new size. This does not
change the size of any images.
See also zoomIn().
void QTextEdit::zoomTo ( int size ) [virtual slot]
Zooms the text by making the base font size size points and
recalculating all font sizes to be the new size. This does not change
the size of any images.
Property Documentation
AutoFormatting autoFormatting
This property holds the enabled set of auto formatting features.
The value can be any combination of the values in the AutoFormatting
enum. The default is AutoAll. Choose AutoNone to disable all automatic
formatting.
Currently, the only automatic formatting feature provided is
AutoBulletList; future versions of Qt may offer more.
Set this property's value with setAutoFormatting() and get this
property's value with autoFormatting().
QString documentTitle
This property holds the title of the document parsed from the text.
For PlainText the title will be an empty string. For RichText the title
will be the text between the <title> tags, if present, otherwise an
empty string.
Get this property's value with documentTitle().
bool hasSelectedText
This property holds whether some text is selected in selection 0.
Get this property's value with hasSelectedText().
int length
This property holds the number of characters in the text.
Get this property's value with length().
bool linkUnderline
This property holds whether hypertext links will be underlined.
If TRUE (the default) hypertext links will be displayed underlined. If
FALSE links will not be displayed underlined.
Set this property's value with setLinkUnderline() and get this
property's value with linkUnderline().
bool modified
This property holds whether the document has been modified by the user.
Set this property's value with setModified() and get this property's
value with isModified().
bool overwriteMode
This property holds the text edit's overwrite mode.
If FALSE (the default) characters entered by the user are inserted with
any characters to the right being moved out of the way. If TRUE, the
editor is in overwrite mode, i.e. characters entered by the user
overwrite any characters to the right of the cursor position.
Set this property's value with setOverwriteMode() and get this
property's value with isOverwriteMode().
QBrush paper
This property holds the background (paper) brush.
The brush that is currently used to draw the background of the text
edit. The initial setting is an empty brush.
Set this property's value with setPaper() and get this property's value
with paper().
bool readOnly
This property holds whether the text edit is read-only.
In a read-only text edit the user can only navigate through the text
and select text; modifying the text is not possible.
This property's default is FALSE.
Set this property's value with setReadOnly() and get this property's
value with isReadOnly().
QString selectedText
This property holds the selected text (from selection 0) or an empty
string if there is no currently selected text (in selection 0).
The text is always returned as PlainText if the textFormat() is
PlainText or AutoText, otherwise it is returned as HTML.
See also hasSelectedText.
Get this property's value with selectedText().
bool tabChangesFocus
This property holds whether TAB changes focus or is accepted as input.
In some occasions text edits should not allow the user to input
tabulators or change indentation using the TAB key, as this breaks the
focus chain. The default is FALSE.
Set this property's value with setTabChangesFocus() and get this
property's value with tabChangesFocus().
int tabStopWidth
This property holds the tab stop width in pixels.
Set this property's value with setTabStopWidth() and get this
property's value with tabStopWidth().
QString text
This property holds the text edit's text.
There is no default text.
On setting, any previous text is deleted.
The text may be interpreted either as plain text or as rich text,
depending on the textFormat(). The default setting is AutoText, i.e.
the text edit auto-detects the format of the text.
For richtext, calling text() on an editable QTextEdit will cause the
text to be regenerated from the textedit. This may mean that the
QString returned may not be exactly the same as the one that was set.
See also textFormat.
Set this property's value with setText() and get this property's value
with text().
TextFormat textFormat
This property holds the text format: rich text, plain text, log text or
auto text.
The text format is one of the following:
PlainText - all characters, except newlines, are displayed verbatim,
including spaces. Whenever a newline appears in the text the text edit
inserts a hard line break and begins a new paragraph.
RichText - rich text rendering. The available styles are defined in the
default stylesheet QStyleSheet::defaultSheet().
LogText - optimized mode for very large texts. Supports a very limited
set of formatting tags (color, bold, underline and italic settings).
AutoText - this is the default. The text edit autodetects which
rendering style is best, PlainText or RichText. This is done by using
the QStyleSheet::mightBeRichText() function.
Set this property's value with setTextFormat() and get this property's
value with textFormat().
int undoDepth
This property holds the depth of the undo history.
The maximum number of steps in the undo/redo history. The default is
100.
See also undo() and redo().
Set this property's value with setUndoDepth() and get this property's
value with undoDepth().
bool undoRedoEnabled
This property holds whether undo/redo is enabled.
When changing this property, the undo/redo history is cleared.
The default is TRUE.
Set this property's value with setUndoRedoEnabled() and get this
property's value with isUndoRedoEnabled().
WordWrap wordWrap
This property holds the word wrap mode.
The default mode is WidgetWidth which causes words to be wrapped at the
right edge of the text edit. Wrapping occurs at whitespace, keeping
whole words intact. If you want wrapping to occur within words use
setWrapPolicy(). If you set a wrap mode of FixedPixelWidth or
FixedColumnWidth you should also call setWrapColumnOrWidth() with the
width you want.
See also WordWrap, wrapColumnOrWidth, and wrapPolicy.
Set this property's value with setWordWrap() and get this property's
value with wordWrap().
int wrapColumnOrWidth
This property holds the position (in pixels or columns depending on the
wrap mode) where text will be wrapped.
If the wrap mode is FixedPixelWidth, the value is the number of pixels
from the left edge of the text edit at which text should be wrapped. If
the wrap mode is FixedColumnWidth, the value is the column number (in
character columns) from the left edge of the text edit at which text
should be wrapped.
See also wordWrap.
Set this property's value with setWrapColumnOrWidth() and get this
property's value with wrapColumnOrWidth().
WrapPolicy wrapPolicy
This property holds the word wrap policy, at whitespace or anywhere.
Defines where text can be wrapped when word wrap mode is not NoWrap.
The choices are AtWordBoundary (the default), Anywhere and
AtWordOrDocumentBoundary
See also wordWrap.
Set this property's value with setWrapPolicy() and get this property's
value with wrapPolicy().
SEE ALSO
http://doc.trolltech.com/qtextedit.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
If you find a bug in Qt, please report it as described in
http://doc.trolltech.com/bughowto.html. Good bug reports help us to
help you. Thank you.
The definitive Qt documentation is provided in HTML format; it is
located at $QTDIR/doc/html and can be read using Qt Assistant or with a
web browser. This man page is provided as a convenience for those users
who prefer man pages, although this format is not officially supported
by Trolltech.
If you find errors in this manual page, please report them to qt-
bugs@trolltech.com. Please include the name of the manual page
(qtextedit.3qt) and the Qt version (3.3.8).
Trolltech AS 2 February 2007 QTextEdit(3qt)