QSplitter(3qt)QSplitter(3qt)NAME
QSplitter - Implements a splitter widget
SYNOPSIS
#include <qsplitter.h>
Inherits QFrame.
Public Members
enum ResizeMode { Stretch, KeepSize, FollowSizeHint, Auto }
QSplitter ( QWidget * parent = 0, const char * name = 0 )
QSplitter ( Orientation o, QWidget * parent = 0, const char * name = 0
)
~QSplitter ()
virtual void setOrientation ( Orientation )
Orientation orientation () const
void setChildrenCollapsible ( bool )
bool childrenCollapsible () const
void setCollapsible ( QWidget * w, bool collapse )
virtual void setResizeMode ( QWidget * w, ResizeMode mode )
virtual void setOpaqueResize ( bool = TRUE )
bool opaqueResize () const
void moveToFirst ( QWidget * w )
void moveToLast ( QWidget * w )
void refresh ()
QValueList<int> sizes () const
void setSizes ( QValueList<int> list )
int handleWidth () const
void setHandleWidth ( int )
Properties
bool childrenCollapsible - whether child widgets can be resized down to
size 0 by the user
int handleWidth - the width of the splitter handle
bool opaqueResize - whether resizing is opaque
Orientation orientation - the orientation of the splitter
Protected Members
virtual void childEvent ( QChildEvent * c )
int idAfter ( QWidget * w ) const
void moveSplitter ( QCOORD p, int id )
virtual void drawSplitter ( QPainter * p, QCOORD x, QCOORD y, QCOORD w,
QCOORD h ) (obsolete)
int adjustPos ( int pos, int id )
virtual void setRubberband ( int p )
void getRange ( int id, int * min, int * max )
RELATED FUNCTION DOCUMENTATION
QTextStream & operator<< ( QTextStream & ts, const QSplitter & splitter
)
QTextStream & operator>> ( QTextStream & ts, QSplitter & splitter )
DESCRIPTION
The QSplitter class implements a splitter widget.
A splitter lets the user control the size of child widgets by dragging
the boundary between the children. Any number of widgets may be
controlled by a single splitter.
To show a QListBox, a QListView and a QTextEdit side by side:
QSplitter *split = new QSplitter( parent );
QListBox *lb = new QListBox( split );
QListView *lv = new QListView( split );
QTextEdit *ed = new QTextEdit( split );
QSplitter lays out its children horizontally (side by side); you can
use setOrientation(QSplitter::Vertical) to lay out the children
vertically.
By default, all widgets can be as large or as small as the user wishes,
between the minimumSizeHint() (or minimumSize()) and maximumSize() of
the widgets. Use setResizeMode() to specify that a widget should keep
its size when the splitter is resized, or set the stretch component of
the sizePolicy.
Although QSplitter normally resizes the children only at the end of a
resize operation, if you call setOpaqueResize(TRUE) the widgets are
resized as often as possible.
The initial distribution of size between the widgets is determined by
the initial size of each widget. You can also use setSizes() to set the
sizes of all the widgets. The function sizes() returns the sizes set by
the user.
If you hide() a child its space will be distributed among the other
children. It will be reinstated when you show() it again. It is also
possible to reorder the widgets within the splitter using moveToFirst()
and moveToLast().
[Image Omitted]
[Image Omitted]
See also QTabBar and Organizers.
Member Type Documentation
QSplitter::ResizeMode
This enum type describes how QSplitter will resize each of its child
widgets.
QSplitter::Auto - The widget will be resized according to the stretch
factors set in its sizePolicy().
QSplitter::Stretch - The widget will be resized when the splitter
itself is resized.
QSplitter::KeepSize - QSplitter will try to keep the widget's size
unchanged.
QSplitter::FollowSizeHint - QSplitter will resize the widget when the
widget's size hint changes.
MEMBER FUNCTION DOCUMENTATIONQSplitter::QSplitter ( QWidget * parent = 0, const char * name = 0 )
Constructs a horizontal splitter with the parent and name arguments
being passed on to the QFrame constructor.
QSplitter::QSplitter ( Orientation o, QWidget * parent = 0, const char * name
= 0 )
Constructs a splitter with orientation o with the parent and name
arguments being passed on to the QFrame constructor.
QSplitter::~QSplitter ()
Destroys the splitter and any children.
int QSplitter::adjustPos ( int pos, int id ) [protected]
Returns the closest legal position to pos of the widget with ID id.
See also idAfter().
void QSplitter::childEvent ( QChildEvent * c ) [virtual protected]
Tells the splitter that the child widget described by c has been
inserted or removed.
Reimplemented from QObject.
bool QSplitter::childrenCollapsible () const
Returns TRUE if child widgets can be resized down to size 0 by the
user; otherwise returns FALSE. See the "childrenCollapsible" property
for details.
void QSplitter::drawSplitter ( QPainter * p, QCOORD x, QCOORD y, QCOORD w,
QCOORD h ) [virtual protected]
This function is obsolete. It is provided to keep old source working.
We strongly advise against using it in new code.
Draws the splitter handle in the rectangle described by x, y, w, h
using painter p.
See also QStyle::drawPrimitive().
void QSplitter::getRange ( int id, int * min, int * max ) [protected]
Returns the valid range of the splitter with ID id in *min and *max if
min and max are not 0.
See also idAfter().
int QSplitter::handleWidth () const
Returns the width of the splitter handle. See the "handleWidth"
property for details.
int QSplitter::idAfter ( QWidget * w ) const [protected]
Returns the ID of the widget to the right of or below the widget w, or
0 if there is no such widget (i.e. it is either not in this QSplitter
or w is at the end).
void QSplitter::moveSplitter ( QCOORD p, int id ) [protected]
Moves the left/top edge of the splitter handle with ID id as close as
possible to position p, which is the distance from the left (or top)
edge of the widget.
For Arabic, Hebrew and other right-to-left languages the layout is
reversed. p is then the distance from the right (or top) edge of the
widget.
See also idAfter().
void QSplitter::moveToFirst ( QWidget * w )
Moves widget w to the leftmost/top position.
Example: splitter/splitter.cpp.
void QSplitter::moveToLast ( QWidget * w )
Moves widget w to the rightmost/bottom position.
bool QSplitter::opaqueResize () const
Returns TRUE if resizing is opaque; otherwise returns FALSE. See the
"opaqueResize" property for details.
Orientation QSplitter::orientation () const
Returns the orientation of the splitter. See the "orientation" property
for details.
void QSplitter::refresh ()
Updates the splitter's state. You should not need to call this
function.
void QSplitter::setChildrenCollapsible ( bool )
Sets whether child widgets can be resized down to size 0 by the user.
See the "childrenCollapsible" property for details.
void QSplitter::setCollapsible ( QWidget * w, bool collapse )
Sets whether the child widget w is collapsible to collapse.
By default, children are collapsible, meaning that the user can resize
them down to size 0, even if they have a non-zero minimumSize() or
minimumSizeHint(). This behavior can be changed on a per-widget basis
by calling this function, or globally for all the widgets in the
splitter by setting the childrenCollapsible property.
See also childrenCollapsible.
void QSplitter::setHandleWidth ( int )
Sets the width of the splitter handle. See the "handleWidth" property
for details.
void QSplitter::setOpaqueResize ( bool = TRUE ) [virtual]
Sets whether resizing is opaque. See the "opaqueResize" property for
details.
void QSplitter::setOrientation ( Orientation ) [virtual]
Sets the orientation of the splitter. See the "orientation" property
for details.
void QSplitter::setResizeMode ( QWidget * w, ResizeMode mode ) [virtual]
Sets resize mode of widget w to mode. (The default is Auto.)
Examples:
void QSplitter::setRubberband ( int p ) [virtual protected]
Displays a rubber band at position p. If p is negative, the rubber band
is removed.
void QSplitter::setSizes ( QValueList<int> list )
Sets the size parameters to the values given in the list. If the
splitter is horizontal, the values set the widths of each widget going
from left to right. If the splitter is vertical, the values set the
heights of each widget going from top to bottom. Extra values in the
list are ignored.
If list contains too few values, the result is undefined but the
program will still be well-behaved.
Note that the values in list should be the height/width that the
widgets should be resized to.
See also sizes().
QValueList<int> QSplitter::sizes () const
Returns a list of the size parameters of all the widgets in this
splitter.
If the splitter's orientation is horizontal, the list is a list of
widget widths; if the orientation is vertical, the list is a list of
widget heights.
Giving the values to another splitter's setSizes() function will
produce a splitter with the same layout as this one.
Note that if you want to iterate over the list, you should iterate over
a copy, e.g.
QValueList<int> list = mySplitter.sizes();
QValueList<int>::Iterator it = list.begin();
while( it != list.end() ) {
myProcessing( *it );
++it;
}
See also setSizes().
Property Documentation
bool childrenCollapsible
This property holds whether child widgets can be resized down to size 0
by the user.
By default, children are collapsible. It is possible to enable and
disable the collapsing of individual children; see setCollapsible().
Set this property's value with setChildrenCollapsible() and get this
property's value with childrenCollapsible().
int handleWidth
This property holds the width of the splitter handle.
Set this property's value with setHandleWidth() and get this property's
value with handleWidth().
bool opaqueResize
This property holds whether resizing is opaque.
Opaque resizing is off by default.
Set this property's value with setOpaqueResize() and get this
property's value with opaqueResize().
Orientation orientation
This property holds the orientation of the splitter.
By default the orientation is horizontal (the widgets are side by
side). The possible orientations are Horizontal and Vertical.
Set this property's value with setOrientation() and get this property's
value with orientation().
RELATED FUNCTION DOCUMENTATIONQTextStream & operator<< ( QTextStream & ts, const QSplitter & splitter )
Writes the sizes and the hidden state of the widgets in the splitter
splitter to the text stream ts.
See also operator>>(), sizes(), and QWidget::hidden.
QTextStream & operator>> ( QTextStream & ts, QSplitter & splitter )
Reads the sizes and the hidden state of the widgets in the splitter
splitter from the text stream ts. The sizes must have been previously
written by the operator<<() function.
See also operator<<(), setSizes(), and QWidget::hide().
SEE ALSO
http://doc.trolltech.com/qsplitter.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
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If you find errors in this manual page, please report them to qt-
bugs@trolltech.com. Please include the name of the manual page
(qsplitter.3qt) and the Qt version (3.3.8).
Trolltech AS 2 February 2007 QSplitter(3qt)