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/****************************************************************************
** $Id: qt/examples/listboxcombo/listboxcombo.cpp 2.3.1 edited 2001-01-26 $
**
** 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.
**
*****************************************************************************/
#include "listboxcombo.h"
#include <qcombobox.h>
#include <qlistbox.h>
#include <qhbox.h>
#include <qpushbutton.h>
#include <qstring.h>
#include <qpixmap.h>
#include <qlabel.h>
#include <qimage.h>
class MyListBoxItem : public QListBoxItem
{
public:
MyListBoxItem()
: QListBoxItem()
{
setCustomHighlighting( TRUE );
}
protected:
virtual void paint( QPainter * );
virtual int width( const QListBox* ) const { return 100; }
virtual int height( const QListBox* ) const { return 16; }
};
void MyListBoxItem::paint( QPainter *painter )
{
// evil trick: find out whether we are painted onto our listbox
bool in_list_box = listBox() && listBox()->viewport() == painter->device();
QRect r ( 0, 0, width( listBox() ), height( listBox() ) );
if ( in_list_box && selected() )
painter->eraseRect( r );
painter->fillRect( 5, 5, width( listBox() ) - 10, height( listBox() ) - 10, Qt::red );
if ( in_list_box && current() )
listBox()->style().drawFocusRect( painter, r, listBox()->colorGroup(), &painter->backgroundColor(), TRUE );
}
/*
* Constructor
*
* Creates child widgets of the ListBoxCombo widget
*/
ListBoxCombo::ListBoxCombo( QWidget *parent, const char *name )
: QVBox( parent, name )
{
setMargin( 5 );
setSpacing( 5 );
unsigned int i;
QString str;
QHBox *row1 = new QHBox( this );
row1->setSpacing( 5 );
// Create a multi-selection ListBox...
lb1 = new QListBox( row1 );
lb1->setSelectionMode( QListBox::Multi );
// ...insert a pixmap item...
lb1->insertItem( QPixmap( "qtlogo.png" ) );
// ...and 100 text items
for ( i = 0; i < 100; i++ ) {
str = QString( "Listbox Item %1" ).arg( i );
if ( !( i % 4 ) )
lb1->insertItem( QPixmap( "fileopen.xpm" ), str );
else
lb1->insertItem( str );
}
// Create a pushbutton...
QPushButton *arrow1 = new QPushButton( " -> ", row1 );
// ...and connect the clicked SIGNAL with the SLOT slotLeft2Right
connect( arrow1, SIGNAL( clicked() ), this, SLOT( slotLeft2Right() ) );
// create an empty single-selection ListBox
lb2 = new QListBox( row1 );
QHBox *row2 = new QHBox( this );
row2->setSpacing( 5 );
QVBox *box1 = new QVBox( row2 );
box1->setSpacing( 5 );
// Create a non-editable Combobox and a label below...
QComboBox *cb1 = new QComboBox( FALSE, box1 );
label1 = new QLabel( "Current Item: Combobox Item 0", box1 );
label1->setMaximumHeight( label1->sizeHint().height() * 2 );
label1->setFrameStyle( QFrame::Panel | QFrame::Sunken );
//...and insert 50 items into the Combobox
for ( i = 0; i < 50; i++ ) {
str = QString( "Combobox Item %1" ).arg( i );
if ( i % 9 )
cb1->insertItem( str );
else
cb1->listBox()->insertItem( new MyListBoxItem );
}
QVBox *box2 = new QVBox( row2 );
box2->setSpacing( 5 );
// Create an editable Combobox and a label below...
QComboBox *cb2 = new QComboBox( TRUE, box2 );
label2 = new QLabel( "Current Item: Combobox Item 0", box2 );
label2->setMaximumHeight( label2->sizeHint().height() * 2 );
label2->setFrameStyle( QFrame::Panel | QFrame::Sunken );
// ... and insert 50 items into the Combobox
for ( i = 0; i < 50; i++ ) {
str = QString( "Combobox Item %1" ).arg( i );
if ( !( i % 4 ) )
cb2->insertItem( QPixmap( "fileopen.xpm" ), str );
else
cb2->insertItem( str );
}
// Connect the activated SIGNALs of the Comboboxes with SLOTs
connect( cb1, SIGNAL( activated( const QString & ) ), this, SLOT( slotCombo1Activated( const QString & ) ) );
connect( cb2, SIGNAL( activated( const QString & ) ), this, SLOT( slotCombo2Activated( const QString & ) ) );
}
/*
* SLOT slotLeft2Right
*
* Copies all selected items of the first ListBox into the
* second ListBox
*/
void ListBoxCombo::slotLeft2Right()
{
// Go through all items of the first ListBox
for ( unsigned int i = 0; i < lb1->count(); i++ ) {
QListBoxItem *item = lb1->item( i );
// if the item is selected...
if ( item->selected() ) {
// ...and it is a text item...
if ( item->pixmap() && !item->text().isEmpty() )
lb2->insertItem( *item->pixmap(), item->text() );
else if ( !item->pixmap() )
lb2->insertItem( item->text() );
else if ( item->text().isEmpty() )
lb2->insertItem( *item->pixmap() );
}
}
}
/*
* SLOT slotCombo1Activated( const QString &s )
*
* Sets the text of the item which the user just selected
* in the first Combobox (and is now the value of s) to
* the first Label.
*/
void ListBoxCombo::slotCombo1Activated( const QString &s )
{
label1->setText( QString( "Current Item: %1" ).arg( s ) );
}
/*
* SLOT slotCombo2Activated( const QString &s )
*
* Sets the text of the item which the user just selected
* in the second Combobox (and is now the value of s) to
* the second Label.
*/
void ListBoxCombo::slotCombo2Activated( const QString &s )
{
label2->setText( QString( "Current Item: %1" ).arg( s ) );
}
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