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#!/usr/bin/env python
"""**************************************************************************
** $Id$
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
***************************************************************************"""
import sys
from qt import *
FALSE = 0
TRUE = 1
class ListBoxDemo( QWidget ):
def __init__( self, parent=None, name=None ):
QWidget.__init__( self, parent, name )
b = FALSE
g = QGridLayout( self, 2, 2, 6 )
g.addWidget( QLabel( "<b>Configuration:</b>", self ), 0, 0 )
g.addWidget( QLabel( "<b>Result:</b>", self ), 0, 1 )
self.l = QListBox( self )
g.addWidget( self.l, 1, 1 )
self.l.setFocusPolicy( QWidget.StrongFocus )
v = QVBoxLayout( )
g.addLayout( v, 1, 0 )
bg = QButtonGroup( self, None )
b = QRadioButton( "Fixed number of columns,\n"
"as many rows as needed.",
self )
bg.insert( b )
v.addWidget( b )
b.setChecked( TRUE )
self.connect( b, SIGNAL("clicked()"), self.setNumCols )
h = QHBoxLayout()
v.addLayout( h )
h.addSpacing( 30 )
h.addSpacing( 100 )
h.addWidget( QLabel( "Columns:", self ) )
self.columns = QSpinBox( self )
h.addWidget( self.columns )
v.addSpacing( 12 )
b = QRadioButton( "As many columns as fit on-screen,\n"
"as many rows as needed.",
self )
bg.insert( b )
v.addWidget( b )
self.connect( b, SIGNAL("clicked()"), self.setColsByWidth )
v.addSpacing( 12 )
b = QRadioButton( "Fixed number of rows,\n"
"as many columns as needed.",
self )
bg.insert( b )
v.addWidget( b )
self.connect( b, SIGNAL("clicked()"), self.setNumRows )
h = QHBoxLayout()
v.addLayout( h )
h.addSpacing( 30 )
h.addSpacing( 100 )
h.addWidget( QLabel( "Rows:", self ) )
self.rows = QSpinBox( self )
self.rows.setEnabled( FALSE )
h.addWidget( self.rows )
v.addSpacing( 12 )
b = QRadioButton( "As many rows as fit on-screen,\n"
"as many columns as needed.",
self )
bg.insert( b )
v.addWidget( b )
self.connect( b, SIGNAL("clicked()"), self.setRowsByHeight )
v.addSpacing( 12 )
cb = QCheckBox( "Variable-height rows", self )
cb.setChecked( TRUE )
self.connect( cb, SIGNAL("toggled(bool)"), self.setVariableHeight )
v.addWidget( cb )
v.addSpacing( 6 )
cb = QCheckBox( "Variable-width columns", self )
self.connect( cb, SIGNAL("toggled(bool)"), self.setVariableWidth )
v.addWidget( cb )
cb = QCheckBox( "Extended-Selection", self )
self.connect( cb, SIGNAL("toggled(bool)"), self.setMultiSelection )
v.addWidget( cb )
pb = QPushButton( "Sort ascending", self )
self.connect( pb, SIGNAL("clicked()"), self.sortAscending )
v.addWidget( pb )
pb = QPushButton( "Sort descending", self )
self.connect( pb, SIGNAL("clicked()"), self.sortDescending )
v.addWidget( pb )
v.addStretch( 100 )
i = 0
while i <= 2560:
i+=1
self.l.insertItem( str(QString.fromLatin1( "Item " )) + str(QString.number( i )), i )
self.columns.setRange( 1, 256 )
self.columns.setValue( 1 )
self.rows.setRange( 1, 256 )
self.rows.setValue( 256 )
self.connect( self.columns, SIGNAL("valueChanged(int)"), self.setNumCols )
self.connect( self.rows, SIGNAL("valueChanged(int)"), self.setNumRows )
# slots
def setNumCols( self ):
self.columns.setEnabled( TRUE )
self.rows.setEnabled( FALSE )
self.l.setColumnMode( self.columns.value() )
def setNumRows( self ):
self.columns.setEnabled( FALSE )
self.rows.setEnabled( TRUE )
self.l.setRowMode( self.rows.value() )
def setRowsByHeight( self ):
self.columns.setEnabled( FALSE )
self.rows.setEnabled( FALSE )
self.l.setRowMode( QListBox.FitToHeight )
def setColsByWidth( self ):
self.columns.setEnabled( FALSE )
self.rows.setEnabled( FALSE )
self.l.setColumnMode( QListBox.FitToWidth )
def setVariableWidth( self, b ):
self.l.setVariableWidth( b )
def setVariableHeight( self, b ):
self.l.setVariableHeight( b )
def setMultiSelection( self, b ):
self.l.clearSelection()
if b :
self.l.setSelectionMode( QListBox.Extended )
else:
self.l.setSelectionMode( QListBox.Single )
def sortAscending( self ):
self.l.sort( TRUE )
def sortDescending( self ):
self.l.sort( FALSE )
def main( args ):
a = QApplication( args )
t = ListBoxDemo()
t.setCaption( "Qt Example - Listbox" )
a.setMainWidget( t )
t.show()
a.exec_loop()
if __name__=="__main__":
main(sys.argv)
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