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libqt3-devel-3.0.2-2mdk.i586.rpm

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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A Directory Browser</h1>

 
<p> 
This example program demonstrates how to use a listview and
listview items to build a multi-column hierarchical, memory- and
CPU-efficient directory browser. It also demonstrates how to use
Drag&Drop in a listview.
<p> <hr>
<p> Header file:
<p> <pre>/****************************************************************************
** $Id:  qt/dirview.h   3.0.2   edited Oct 12 12:18 $
**
** 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.
**
*****************************************************************************/

#ifndef DIRVIEW_H
#define DIRVIEW_H

#include &lt;<a href="qlistview-h.html">qlistview.h</a>&gt;
#include &lt;<a href="qstring-h.html">qstring.h</a>&gt;
#include &lt;<a href="qfile-h.html">qfile.h</a>&gt;
#include &lt;<a href="qfileinfo-h.html">qfileinfo.h</a>&gt;
#include &lt;<a href="qtimer-h.html">qtimer.h</a>&gt;

class QWidget;
class QDragEnterEvent;
class QDragMoveEvent;
class QDragLeaveEvent;
class QDropEvent;

class FileItem : public <a href="qlistviewitem.html">QListViewItem</a>
{
public:
    FileItem( <a href="qlistviewitem.html">QListViewItem</a> *parent, const <a href="qstring.html">QString</a> &amp;s1, const <a href="qstring.html">QString</a> &amp;s2 )
        : <a href="qlistviewitem.html">QListViewItem</a>( parent, s1, s2 ), pix( 0 ) {}

    const <a href="qpixmap.html">QPixmap</a> *pixmap( int i ) const;
    void setPixmap( <a href="qpixmap.html">QPixmap</a> *p );

private:
    <a href="qpixmap.html">QPixmap</a> *pix;

};

class Directory : public <a href="qlistviewitem.html">QListViewItem</a>
{
public:
    Directory( <a href="qlistview.html">QListView</a> * parent, const <a href="qstring.html">QString</a>&amp; filename );
    Directory( Directory * parent, const <a href="qstring.html">QString</a>&amp; filename, const <a href="qstring.html">QString</a> &amp;col2 )
        : <a href="qlistviewitem.html">QListViewItem</a>( parent, filename, col2 ), pix( 0 ) {}
    Directory( Directory * parent, const <a href="qstring.html">QString</a>&amp; filename );

    <a href="qstring.html">QString</a> text( int column ) const;

    <a href="qstring.html">QString</a> fullName();

    void setOpen( bool );
    void setup();

    const <a href="qpixmap.html">QPixmap</a> *pixmap( int i ) const;
    void setPixmap( <a href="qpixmap.html">QPixmap</a> *p );

private:
    <a href="qfile.html">QFile</a> f;
    Directory * p;
    bool readable;
    bool showDirsOnly;
    <a href="qpixmap.html">QPixmap</a> *pix;

};

class DirectoryView : public <a href="qlistview.html">QListView</a>
{
    <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a>

public:
    DirectoryView( <a href="qwidget.html">QWidget</a> *parent = 0, const char *name = 0, bool sdo = FALSE );
    bool showDirsOnly() { return dirsOnly; }

public slots:
    void setDir( const <a href="qstring.html">QString</a> &amp; );

signals:
    void folderSelected( const <a href="qstring.html">QString</a> &amp; );

protected slots:
    void slotFolderSelected( <a href="qlistviewitem.html">QListViewItem</a> * );
    void openFolder();

protected:
    void contentsDragEnterEvent( <a href="qdragenterevent.html">QDragEnterEvent</a> *e );
    void contentsDragMoveEvent( <a href="qdragmoveevent.html">QDragMoveEvent</a> *e );
    void contentsDragLeaveEvent( <a href="qdragleaveevent.html">QDragLeaveEvent</a> *e );
    void contentsDropEvent( <a href="qdropevent.html">QDropEvent</a> *e );
    void contentsMouseMoveEvent( <a href="qmouseevent.html">QMouseEvent</a> *e );
    void contentsMousePressEvent( <a href="qmouseevent.html">QMouseEvent</a> *e );
    void contentsMouseReleaseEvent( <a href="qmouseevent.html">QMouseEvent</a> *e );

private:
    <a href="qstring.html">QString</a> fullPath(QListViewItem* item);
    bool dirsOnly;
    <a href="qlistviewitem.html">QListViewItem</a> *oldCurrent;
    <a href="qlistviewitem.html">QListViewItem</a> *dropItem;
    <a href="qtimer.html">QTimer</a>* autoopen_timer;
    <a href="qpoint.html">QPoint</a> presspos;
    bool mousePressed;

};

#endif
</pre>

<p> <hr>
<p> And here is the main implementation file.  Note the way the program
scans subdirectories only when it has to.  This allows the program
to handle very large file systems efficiently.  The same technique
can be used in any other trees.
<p> <pre>/****************************************************************************
** $Id:  qt/dirview.cpp   3.0.2   edited Oct 12 12:18 $
**
** 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 "dirview.h"

#include &lt;<a href="qdir-h.html">qdir.h</a>&gt;
#include &lt;<a href="qfile-h.html">qfile.h</a>&gt;
#include &lt;<a href="qfileinfo-h.html">qfileinfo.h</a>&gt;
#include &lt;<a href="qpixmap-h.html">qpixmap.h</a>&gt;
#include &lt;<a href="qevent-h.html">qevent.h</a>&gt;
#include &lt;<a href="qpoint-h.html">qpoint.h</a>&gt;
#include &lt;<a href="qmessagebox-h.html">qmessagebox.h</a>&gt;
#include &lt;<a href="qdragobject-h.html">qdragobject.h</a>&gt;
#include &lt;<a href="qmime-h.html">qmime.h</a>&gt;
#include &lt;<a href="qstrlist-h.html">qstrlist.h</a>&gt;
#include &lt;<a href="qstringlist-h.html">qstringlist.h</a>&gt;
#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qheader-h.html">qheader.h</a>&gt;

static const char* folder_closed_xpm[]={
    "16 16 9 1",
    "g c #808080",
    "b c #c0c000",
    "e c #c0c0c0",
    "# c #000000",
    "c c #ffff00",
    ". c None",
    "a c #585858",
    "f c #a0a0a4",
    "d c #ffffff",
    "..###...........",
    ".#abc##.........",
    ".#daabc#####....",
    ".#ddeaabbccc#...",
    ".#dedeeabbbba...",
    ".#edeeeeaaaab#..",
    ".#deeeeeeefe#ba.",
    ".#eeeeeeefef#ba.",
    ".#eeeeeefeff#ba.",
    ".#eeeeefefff#ba.",
    ".##geefeffff#ba.",
    "...##gefffff#ba.",
    ".....##fffff#ba.",
    ".......##fff#b##",
    ".........##f#b##",
    "...........####."};

static const char* folder_open_xpm[]={
    "16 16 11 1",
    "# c #000000",
    "g c #c0c0c0",
    "e c #303030",
    "a c #ffa858",
    "b c #808080",
    "d c #a0a0a4",
    "f c #585858",
    "c c #ffdca8",
    "h c #dcdcdc",
    "i c #ffffff",
    ". c None",
    "....###.........",
    "....#ab##.......",
    "....#acab####...",
    "###.#acccccca#..",
    "#ddefaaaccccca#.",
    "#bdddbaaaacccab#",
    ".eddddbbaaaacab#",
    ".#bddggdbbaaaab#",
    "..edgdggggbbaab#",
    "..#bgggghghdaab#",
    "...ebhggghicfab#",
    "....#edhhiiidab#",
    "......#egiiicfb#",
    "........#egiibb#",
    "..........#egib#",
    "............#ee#"};

static const char * folder_locked[]={
    "16 16 10 1",
    "h c #808080",
    "b c #ffa858",
    "f c #c0c0c0",
    "e c #c05800",
    "# c #000000",
    "c c #ffdca8",
    ". c None",
    "a c #585858",
    "g c #a0a0a4",
    "d c #ffffff",
    "..#a#...........",
    ".#abc####.......",
    ".#daa#eee#......",
    ".#ddf#e##b#.....",
    ".#dfd#e#bcb##...",
    ".#fdccc#daaab#..",
    ".#dfbbbccgfg#ba.",
    ".#ffb#ebbfgg#ba.",
    ".#ffbbe#bggg#ba.",
    ".#fffbbebggg#ba.",
    ".##hf#ebbggg#ba.",
    "...###e#gggg#ba.",
    ".....#e#gggg#ba.",
    "......###ggg#b##",
    ".........##g#b##",
    "...........####."};

static const char * pix_file []={
    "16 16 7 1",
    "# c #000000",
    "b c #ffffff",
    "e c #000000",
    "d c #404000",
    "c c #c0c000",
    "a c #ffffc0",
    ". c None",
    "................",
    ".........#......",
    "......#.#a##....",
    ".....#b#bbba##..",
    "....#b#bbbabbb#.",
    "...#b#bba##bb#..",
    "..#b#abb#bb##...",
    ".#a#aab#bbbab##.",
    "#a#aaa#bcbbbbbb#",
    "#ccdc#bcbbcbbb#.",
    ".##c#bcbbcabb#..",
    "...#acbacbbbe...",
    "..#aaaacaba#....",
    "...##aaaaa#.....",
    ".....##aa#......",
    ".......##......."};

QPixmap *folderLocked = 0;
QPixmap *folderClosed = 0;
QPixmap *folderOpen = 0;
QPixmap *fileNormal = 0;

/*****************************************************************************
 *
 * Class Directory
 *
 *****************************************************************************/

<a name="f475"></a>Directory::Directory( Directory * parent, const <a href="qstring.html">QString</a>&amp; filename )
    : <a href="qlistviewitem.html">QListViewItem</a>( parent ), f(filename),
      showDirsOnly( parent-&gt;showDirsOnly ),
      pix( 0 )
{
    p = parent;
    readable = QDir( fullName() ).isReadable();

    if ( !readable )
        <a href="qlistviewitem.html#setPixmap">setPixmap</a>( folderLocked );
    else
        <a href="qlistviewitem.html#setPixmap">setPixmap</a>( folderClosed );
}


Directory::Directory( <a href="qlistview.html">QListView</a> * parent, const <a href="qstring.html">QString</a>&amp; filename )
    : <a href="qlistviewitem.html">QListViewItem</a>( parent ), f(filename),
      showDirsOnly( ( (DirectoryView*)parent )-&gt;showDirsOnly() ),
      pix( 0 )
{
    p = 0;
    readable = QDir( fullName() ).isReadable();
}


<a name="x1684"></a>void Directory::<a href="qlistviewitem.html#setPixmap">setPixmap</a>( <a href="qpixmap.html">QPixmap</a> *px )
{
    pix = px;
    <a href="qlistviewitem.html#setup">setup</a>();
    <a href="qlistviewitem.html#widthChanged">widthChanged</a>( 0 );
    <a href="qlistviewitem.html#invalidateHeight">invalidateHeight</a>();
    <a href="qlistviewitem.html#repaint">repaint</a>();
}


<a name="x1682"></a>const QPixmap *Directory::<a href="qlistviewitem.html#pixmap">pixmap</a>( int i ) const
{
    if ( i )
        return 0;
    return pix;
}

<a name="x1683"></a>void Directory::<a href="qlistviewitem.html#setOpen">setOpen</a>( bool o )
{
    if ( o )
        <a href="qlistviewitem.html#setPixmap">setPixmap</a>( folderOpen );
    else
        <a href="qlistviewitem.html#setPixmap">setPixmap</a>( folderClosed );

    if ( o &amp;&amp; !childCount() ) {
        <a href="qstring.html">QString</a> s( fullName() );
        <a href="qdir.html">QDir</a> thisDir( s );
<a name="x1664"></a>        if ( !thisDir.<a href="qdir.html#isReadable">isReadable</a>() ) {
            readable = FALSE;
            <a href="qlistviewitem.html#setExpandable">setExpandable</a>( FALSE );
            return;
        }

        <a href="qlistviewitem.html#listView">listView</a>()-&gt;setUpdatesEnabled( FALSE );
<a name="x1663"></a>        const QFileInfoList * files = thisDir.<a href="qdir.html#entryInfoList">entryInfoList</a>();
        if ( files ) {
            QFileInfoListIterator it( *files );
            <a href="qfileinfo.html">QFileInfo</a> * fi;
<a name="x1687"></a>            while( (fi=it.<a href="qlistviewitemiterator.html#current">current</a>()) != 0 ) {
                ++it;
<a name="x1672"></a>                if ( fi-&gt;<a href="qfileinfo.html#fileName">fileName</a>() == "." || fi-&gt;<a href="qfileinfo.html#fileName">fileName</a>() == ".." )
                    ; // nothing
<a name="x1675"></a>                else if ( fi-&gt;<a href="qfileinfo.html#isSymLink">isSymLink</a>() &amp;&amp; !showDirsOnly ) {
                    FileItem *item = new FileItem( this, fi-&gt;<a href="qfileinfo.html#fileName">fileName</a>(),
                                                     "Symbolic Link" );
                    item-&gt;<a href="qlistviewitem.html#setPixmap">setPixmap</a>( fileNormal );
                }
<a name="x1673"></a>                else if ( fi-&gt;<a href="qfileinfo.html#isDir">isDir</a>() )
                    (void)new Directory( this, fi-&gt;<a href="qfileinfo.html#fileName">fileName</a>() );
                else if ( !showDirsOnly ) {
                    FileItem *item
                        = new FileItem( this, fi-&gt;<a href="qfileinfo.html#fileName">fileName</a>(),
<a name="x1674"></a>                                             fi-&gt;<a href="qfileinfo.html#isFile">isFile</a>()?"File":"Special" );
                    item-&gt;<a href="qlistviewitem.html#setPixmap">setPixmap</a>( fileNormal );
                }
            }
        }
        listView()-&gt;setUpdatesEnabled( TRUE );
    }
    QListViewItem::<a href="qlistviewitem.html#setOpen">setOpen</a>( o );
}


<a name="x1685"></a>void Directory::<a href="qlistviewitem.html#setup">setup</a>()
{
    setExpandable( TRUE );
    QListViewItem::<a href="qlistviewitem.html#setup">setup</a>();
}


QString <a name="f476"></a>Directory::fullName()
{
    <a href="qstring.html">QString</a> s;
    if ( p ) {
        s = p-&gt;fullName();
<a name="x1696"></a>        s.<a href="qstring.html#append">append</a>( f.name() );
        s.<a href="qstring.html#append">append</a>( "/" );
    } else {
        s = f.name();
    }
    return s;
}


<a name="x1686"></a>QString Directory::<a href="qlistviewitem.html#text">text</a>( int column ) const
{
    if ( column == 0 )
        return f.name();
    else if ( readable )
        return "Directory";
    else
        return "Unreadable Directory";
}

/*****************************************************************************
 *
 * Class DirectoryView
 *
 *****************************************************************************/

<a name="f477"></a>DirectoryView::DirectoryView( <a href="qwidget.html">QWidget</a> *parent, const char *name, bool sdo )
    : <a href="qlistview.html">QListView</a>( parent, name ), dirsOnly( sdo ), oldCurrent( 0 ),
      dropItem( 0 ), mousePressed( FALSE )
{
    autoopen_timer = new <a href="qtimer.html">QTimer</a>( this );
    if ( !folderLocked ) {
        folderLocked = new <a href="qpixmap.html">QPixmap</a>( folder_locked );
        folderClosed = new <a href="qpixmap.html">QPixmap</a>( folder_closed_xpm );
        folderOpen = new <a href="qpixmap.html">QPixmap</a>( folder_open_xpm );
        fileNormal = new <a href="qpixmap.html">QPixmap</a>( pix_file );
    }

    <a href="qobject.html#connect">connect</a>( this, SIGNAL( <a href="qlistview.html#doubleClicked">doubleClicked</a>( <a href="qlistviewitem.html">QListViewItem</a> * ) ),
             this, SLOT( slotFolderSelected( <a href="qlistviewitem.html">QListViewItem</a> * ) ) );
    <a href="qobject.html#connect">connect</a>( this, SIGNAL( <a href="qlistview.html#returnPressed">returnPressed</a>( <a href="qlistviewitem.html">QListViewItem</a> * ) ),
             this, SLOT( slotFolderSelected( <a href="qlistviewitem.html">QListViewItem</a> * ) ) );

    <a href="qwidget.html#setAcceptDrops">setAcceptDrops</a>( TRUE );
    <a href="qscrollview.html#viewport">viewport</a>()-&gt;setAcceptDrops( TRUE );

<a name="x1700"></a>    <a href="qobject.html#connect">connect</a>( autoopen_timer, SIGNAL( <a href="qtimer.html#timeout">timeout</a>() ),
             this, SLOT( openFolder() ) );
}

void <a name="f478"></a>DirectoryView::slotFolderSelected( <a href="qlistviewitem.html">QListViewItem</a> *i )
{
    if ( !i || !showDirsOnly() )
        return;

    Directory *dir = (Directory*)i;
    emit folderSelected( dir-&gt;fullName() );
}

void <a name="f479"></a>DirectoryView::openFolder()
{
<a name="x1699"></a>    autoopen_timer-&gt;<a href="qtimer.html#stop">stop</a>();
    if ( dropItem &amp;&amp; !dropItem-&gt;isOpen() ) {
        dropItem-&gt;setOpen( TRUE );
        dropItem-&gt;repaint();
    }
}

static const int autoopenTime = 750;


<a name="x1692"></a>void DirectoryView::<a href="qscrollview.html#contentsDragEnterEvent">contentsDragEnterEvent</a>( <a href="qdragenterevent.html">QDragEnterEvent</a> *e )
{
    if ( !QUriDrag::canDecode(e) ) {
<a name="x1665"></a>        e-&gt;<a href="qdragmoveevent.html#ignore">ignore</a>();
        return;
    }

    oldCurrent = <a href="qlistview.html#currentItem">currentItem</a>();

<a name="x1670"></a>    <a href="qlistviewitem.html">QListViewItem</a> *i = <a href="qlistview.html#itemAt">itemAt</a>( <a href="qscrollview.html#contentsToViewport">contentsToViewport</a>(e-&gt;<a href="qdropevent.html#pos">pos</a>()) );
    if ( i ) {
        dropItem = i;
<a name="x1698"></a>        autoopen_timer-&gt;<a href="qtimer.html#start">start</a>( autoopenTime );
    }
}


<a name="x1694"></a>void DirectoryView::<a href="qscrollview.html#contentsDragMoveEvent">contentsDragMoveEvent</a>( <a href="qdragmoveevent.html">QDragMoveEvent</a> *e )
{
    if ( !QUriDrag::canDecode(e) ) {
        e-&gt;<a href="qdragmoveevent.html#ignore">ignore</a>();
        return;
    }

    <a href="qpoint.html">QPoint</a> vp = <a href="qscrollview.html#contentsToViewport">contentsToViewport</a>( ( (QDragMoveEvent*)e )-&gt;pos() );
    <a href="qlistviewitem.html">QListViewItem</a> *i = <a href="qlistview.html#itemAt">itemAt</a>( vp );
    if ( i ) {
        <a href="qlistview.html#setSelected">setSelected</a>( i, TRUE );
<a name="x1667"></a>        e-&gt;<a href="qdragmoveevent.html#accept">accept</a>();
        if ( i != dropItem ) {
            autoopen_timer-&gt;<a href="qtimer.html#stop">stop</a>();
            dropItem = i;
            autoopen_timer-&gt;<a href="qtimer.html#start">start</a>( autoopenTime );
        }
<a name="x1669"></a>        switch ( e-&gt;<a href="qdropevent.html#action">action</a>() ) {
        case QDropEvent::Copy:
            break;
        case QDropEvent::Move:
<a name="x1668"></a>            e-&gt;<a href="qdropevent.html#acceptAction">acceptAction</a>();
            break;
        case QDropEvent::Link:
            e-&gt;<a href="qdropevent.html#acceptAction">acceptAction</a>();
            break;
        default:
            ;
        }
    } else {
        e-&gt;<a href="qdragmoveevent.html#ignore">ignore</a>();
        autoopen_timer-&gt;<a href="qtimer.html#stop">stop</a>();
        dropItem = 0;
    }
}

<a name="x1693"></a>void DirectoryView::<a href="qscrollview.html#contentsDragLeaveEvent">contentsDragLeaveEvent</a>( <a href="qdragleaveevent.html">QDragLeaveEvent</a> * )
{
    autoopen_timer-&gt;<a href="qtimer.html#stop">stop</a>();
    dropItem = 0;

    <a href="qlistview.html#setCurrentItem">setCurrentItem</a>( oldCurrent );
    <a href="qlistview.html#setSelected">setSelected</a>( oldCurrent, TRUE );
}

<a name="x1695"></a>void DirectoryView::<a href="qscrollview.html#contentsDropEvent">contentsDropEvent</a>( <a href="qdropevent.html">QDropEvent</a> *e )
{
    autoopen_timer-&gt;<a href="qtimer.html#stop">stop</a>();

    if ( !QUriDrag::canDecode(e) ) {
        e-&gt;<a href="qdragmoveevent.html#ignore">ignore</a>();
        return;
    }

    <a href="qlistviewitem.html">QListViewItem</a> *item = <a href="qlistview.html#itemAt">itemAt</a>( <a href="qscrollview.html#contentsToViewport">contentsToViewport</a>(e-&gt;<a href="qdropevent.html#pos">pos</a>()) );
    if ( item ) {

        <a href="qstrlist.html">QStrList</a> lst;

<a name="x1701"></a>        QUriDrag::<a href="quridrag.html#decode">decode</a>( e, lst );

        <a href="qstring.html">QString</a> str;

        switch ( e-&gt;<a href="qdropevent.html#action">action</a>() ) {
            case QDropEvent::Copy:
            str = "Copy";
            break;
            case QDropEvent::Move:
            str = "Move";
            e-&gt;<a href="qdropevent.html#acceptAction">acceptAction</a>();
            break;
            case QDropEvent::Link:
            str = "Link";
            e-&gt;<a href="qdropevent.html#acceptAction">acceptAction</a>();
            break;
            default:
            str = "Unknown";
        }

        str += "\n\n";

        e-&gt;<a href="qdragmoveevent.html#accept">accept</a>();

        for ( uint i = 0; i &lt; lst.<a href="qptrlist.html#count">count</a>(); ++i ) {
<a name="x1690"></a>            <a href="qstring.html">QString</a> filename = lst.<a href="qptrlist.html#at">at</a>( i );
            str += filename + "\n";
        }
        str += QString( "\nTo\n\n   %1" )
               .arg( fullPath(item) );

<a name="x1688"></a>        QMessageBox::<a href="qmessagebox.html#information">information</a>( this, "Drop target", str, "Not implemented" );
    } else
        e-&gt;<a href="qdragmoveevent.html#ignore">ignore</a>();

}


QString <a name="f480"></a>DirectoryView::fullPath(QListViewItem* item)
{
    <a href="qstring.html">QString</a> fullpath = item-&gt;<a href="qlistviewitem.html#text">text</a>(0);
<a name="x1681"></a>    while ( (item=item-&gt;<a href="qlistviewitem.html#parent">parent</a>()) ) {
        if ( item-&gt;<a href="qlistviewitem.html#parent">parent</a>() )
            fullpath = item-&gt;<a href="qlistviewitem.html#text">text</a>(0) + "/" + fullpath;
        else
            fullpath = item-&gt;<a href="qlistviewitem.html#text">text</a>(0) + fullpath;
    }
    return fullpath;
}

<a name="x1677"></a>void DirectoryView::<a href="qlistview.html#contentsMousePressEvent">contentsMousePressEvent</a>( <a href="qmouseevent.html">QMouseEvent</a>* e )
{
    QListView::<a href="qlistview.html#contentsMousePressEvent">contentsMousePressEvent</a>(e);
    <a href="qpoint.html">QPoint</a> p( contentsToViewport( e-&gt;<a href="qdropevent.html#pos">pos</a>() ) );
    <a href="qlistviewitem.html">QListViewItem</a> *i = itemAt( p );
    if ( i ) {
        // if the user clicked into the root decoration of the item, don't try to start a drag!
<a name="x1689"></a>        if ( p.<a href="qpoint.html#x">x</a>() &gt; header()-&gt;cellPos( header()-&gt;mapToActual( 0 ) ) +
<a name="x1679"></a>             treeStepSize() * ( i-&gt;<a href="qlistviewitem.html#depth">depth</a>() + ( rootIsDecorated() ? 1 : 0) ) + itemMargin() ||
             p.<a href="qpoint.html#x">x</a>() &lt; header()-&gt;cellPos( header()-&gt;mapToActual( 0 ) ) ) {
            presspos = e-&gt;<a href="qdropevent.html#pos">pos</a>();
            mousePressed = TRUE;
        }
    }
}

<a name="x1676"></a>void DirectoryView::<a href="qlistview.html#contentsMouseMoveEvent">contentsMouseMoveEvent</a>( <a href="qmouseevent.html">QMouseEvent</a>* e )
{
    if ( mousePressed &amp;&amp; ( presspos - e-&gt;<a href="qdropevent.html#pos">pos</a>() ).manhattanLength() &gt; QApplication::<a href="qapplication.html#startDragDistance">startDragDistance</a>() ) {
        mousePressed = FALSE;
        <a href="qlistviewitem.html">QListViewItem</a> *item = itemAt( contentsToViewport(presspos) );
        if ( item ) {
            <a href="qstring.html">QString</a> source = fullPath(item);
<a name="x1671"></a>            if ( QFile::<a href="qfile.html#exists">exists</a>(source) ) {
                <a href="quridrag.html">QUriDrag</a>* ud = new <a href="quridrag.html">QUriDrag</a>(viewport());
<a name="x1702"></a>                ud-&gt;<a href="quridrag.html#setUnicodeUris">setUnicodeUris</a>( source );
<a name="x1666"></a>                if ( ud-&gt;<a href="qdragobject.html#drag">drag</a>() )
                    QMessageBox::<a href="qmessagebox.html#information">information</a>( this, "Drag source",
                                              QString("Delete ")+source, "Not implemented" );
            }
        }
    }
}

<a name="x1678"></a>void DirectoryView::<a href="qlistview.html#contentsMouseReleaseEvent">contentsMouseReleaseEvent</a>( <a href="qmouseevent.html">QMouseEvent</a> * )
{
    mousePressed = FALSE;
}

void <a name="f481"></a>DirectoryView::setDir( const <a href="qstring.html">QString</a> &amp;s )
{
    <a href="qlistviewitemiterator.html">QListViewItemIterator</a> it( this );
    ++it;
    for ( ; it.<a href="qlistviewitemiterator.html#current">current</a>(); ++it ) {
        it.<a href="qlistviewitemiterator.html#current">current</a>()-&gt;setOpen( FALSE );
    }

<a name="x1697"></a>    <a href="qstringlist.html">QStringList</a> lst( QStringList::<a href="qstringlist.html#split">split</a>( "/", s ) );
    <a href="qlistviewitem.html">QListViewItem</a> *item = <a href="qlistviewitem.html#firstChild">firstChild</a>();
    QStringList::Iterator it2 = lst.<a href="qvaluelist.html#begin">begin</a>();
    for ( ; it2 != lst.<a href="qvaluelist.html#end">end</a>(); ++it2 ) {
        while ( item ) {
            if ( item-&gt;<a href="qlistviewitem.html#text">text</a>( 0 ) == *it2 ) {
                item-&gt;<a href="qlistviewitem.html#setOpen">setOpen</a>( TRUE );
                break;
            }
<a name="x1680"></a>            item = item-&gt;<a href="qlistviewitem.html#itemBelow">itemBelow</a>();
        }
    }

    if ( item )
        setCurrentItem( item );
}

void FileItem::<a href="qlistviewitem.html#setPixmap">setPixmap</a>( <a href="qpixmap.html">QPixmap</a> *p )
{
    pix = p;
    <a href="qlistviewitem.html#setup">setup</a>();
    <a href="qlistviewitem.html#widthChanged">widthChanged</a>( 0 );
    <a href="qlistviewitem.html#invalidateHeight">invalidateHeight</a>();
    <a href="qlistviewitem.html#repaint">repaint</a>();
}


const QPixmap *FileItem::<a href="qlistviewitem.html#pixmap">pixmap</a>( int i ) const
{
    if ( i )
        return 0;
    return pix;
}
</pre>

<p> <hr>
<p> Main:
<p> <pre>/****************************************************************************
** $Id:  qt/main.cpp   3.0.2   edited Oct 12 12:18 $
**
** 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 &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qfileinfo-h.html">qfileinfo.h</a>&gt;
#include &lt;<a href="qdir-h.html">qdir.h</a>&gt;
#include "dirview.h"

int main( int argc, char ** argv )
{
    <a href="qapplication.html">QApplication</a> a( argc, argv );

    DirectoryView mw;

<a name="x1709"></a>    mw.<a href="qlistview.html#addColumn">addColumn</a>( "Name" );
    mw.<a href="qlistview.html#addColumn">addColumn</a>( "Type" );
<a name="x1711"></a>    mw.<a href="qlistview.html#setTreeStepSize">setTreeStepSize</a>( 20 );

<a name="x1707"></a>    const QFileInfoList* roots = QDir::<a href="qdir.html#drives">drives</a>();
    <a href="qptrlistiterator.html">QPtrListIterator</a>&lt;QFileInfo&gt; i(*roots);
    <a href="qfileinfo.html">QFileInfo</a>* fi;
    while ( (fi = *i) ) {
        ++i;
<a name="x1708"></a>        Directory * root = new Directory( &amp;mw, fi-&gt;<a href="qfileinfo.html#filePath">filePath</a>() );
        if ( roots-&gt;count() &lt;= 1 )
<a name="x1712"></a>            root-&gt;<a href="qlistviewitem.html#setOpen">setOpen</a>( TRUE ); // be interesting
    }

    mw.<a href="qwidget.html#resize">resize</a>( 400, 400 );
    mw.<a href="qwidget.html#setCaption">setCaption</a>( "Qt Example - Directory Browser" );
<a name="x1710"></a>    mw.<a href="qlistview.html#setAllColumnsShowFocus">setAllColumnsShowFocus</a>( TRUE );
    a.<a href="qapplication.html#setMainWidget">setMainWidget</a>( &amp;mw );
    mw.<a href="qwidget.html#show">show</a>();

    return a.<a href="qapplication.html#exec">exec</a>();
}
</pre>

<p>See also <a href="examples.html">Examples</a>.

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<a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a>
<td align=right><div align=right>Qt version 3.0.2</div>
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