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qt3/examples/dirview/dirview.cpp

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/****************************************************************************
**
** Copyright (C) 1992-2008 Trolltech ASA. 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 <qdir.h>
#include <qfile.h>
#include <qfileinfo.h>
#include <qpixmap.h>
#include <qevent.h>
#include <qpoint.h>
#include <qmessagebox.h>
#include <qdragobject.h>
#include <qmime.h>
#include <qstrlist.h>
#include <qstringlist.h>
#include <qapplication.h>
#include <qheader.h>
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
*
*****************************************************************************/
Directory::Directory( Directory * parent, const QString& filename )
: QListViewItem( parent ), f(filename),
showDirsOnly( parent->showDirsOnly ),
pix( 0 )
{
p = parent;
readable = QDir( fullName() ).isReadable();
if ( !readable )
setPixmap( folderLocked );
else
setPixmap( folderClosed );
}
Directory::Directory( QListView * parent, const QString& filename )
: QListViewItem( parent ), f(filename),
showDirsOnly( ( (DirectoryView*)parent )->showDirsOnly() ),
pix( 0 )
{
p = 0;
readable = QDir( fullName() ).isReadable();
}
void Directory::setPixmap( QPixmap *px )
{
pix = px;
setup();
widthChanged( 0 );
invalidateHeight();
repaint();
}
const QPixmap *Directory::pixmap( int i ) const
{
if ( i )
return 0;
return pix;
}
void Directory::setOpen( bool o )
{
if ( o )
setPixmap( folderOpen );
else
setPixmap( folderClosed );
if ( o && !childCount() ) {
QString s( fullName() );
QDir thisDir( s );
if ( !thisDir.isReadable() ) {
readable = FALSE;
setExpandable( FALSE );
return;
}
listView()->setUpdatesEnabled( FALSE );
const QFileInfoList * files = thisDir.entryInfoList();
if ( files ) {
QFileInfoListIterator it( *files );
QFileInfo * fi;
while( (fi=it.current()) != 0 ) {
++it;
if ( fi->fileName() == "." || fi->fileName() == ".." )
; // nothing
else if ( fi->isSymLink() && !showDirsOnly ) {
FileItem *item = new FileItem( this, fi->fileName(),
"Symbolic Link" );
item->setPixmap( fileNormal );
}
else if ( fi->isDir() )
(void)new Directory( this, fi->fileName() );
else if ( !showDirsOnly ) {
FileItem *item
= new FileItem( this, fi->fileName(),
fi->isFile()?"File":"Special" );
item->setPixmap( fileNormal );
}
}
}
listView()->setUpdatesEnabled( TRUE );
}
QListViewItem::setOpen( o );
}
void Directory::setup()
{
setExpandable( TRUE );
QListViewItem::setup();
}
QString Directory::fullName()
{
QString s;
if ( p ) {
s = p->fullName();
s.append( f.name() );
s.append( "/" );
} else {
s = f.name();
}
return s;
}
QString Directory::text( int column ) const
{
if ( column == 0 )
return f.name();
else if ( readable )
return "Directory";
else
return "Unreadable Directory";
}
/*****************************************************************************
*
* Class DirectoryView
*
*****************************************************************************/
DirectoryView::DirectoryView( QWidget *parent, const char *name, bool sdo )
: QListView( parent, name ), dirsOnly( sdo ), oldCurrent( 0 ),
dropItem( 0 ), mousePressed( FALSE )
{
autoopen_timer = new QTimer( this );
if ( !folderLocked ) {
folderLocked = new QPixmap( folder_locked );
folderClosed = new QPixmap( folder_closed_xpm );
folderOpen = new QPixmap( folder_open_xpm );
fileNormal = new QPixmap( pix_file );
}
connect( this, SIGNAL( doubleClicked( QListViewItem * ) ),
this, SLOT( slotFolderSelected( QListViewItem * ) ) );
connect( this, SIGNAL( returnPressed( QListViewItem * ) ),
this, SLOT( slotFolderSelected( QListViewItem * ) ) );
setAcceptDrops( TRUE );
viewport()->setAcceptDrops( TRUE );
connect( autoopen_timer, SIGNAL( timeout() ),
this, SLOT( openFolder() ) );
}
void DirectoryView::slotFolderSelected( QListViewItem *i )
{
if ( !i || !showDirsOnly() )
return;
Directory *dir = (Directory*)i;
emit folderSelected( dir->fullName() );
}
void DirectoryView::openFolder()
{
autoopen_timer->stop();
if ( dropItem && !dropItem->isOpen() ) {
dropItem->setOpen( TRUE );
dropItem->repaint();
}
}
static const int autoopenTime = 750;
void DirectoryView::contentsDragEnterEvent( QDragEnterEvent *e )
{
if ( !QUriDrag::canDecode(e) ) {
e->ignore();
return;
}
oldCurrent = currentItem();
QListViewItem *i = itemAt( contentsToViewport(e->pos()) );
if ( i ) {
dropItem = i;
autoopen_timer->start( autoopenTime );
}
}
void DirectoryView::contentsDragMoveEvent( QDragMoveEvent *e )
{
if ( !QUriDrag::canDecode(e) ) {
e->ignore();
return;
}
QPoint vp = contentsToViewport( ( (QDragMoveEvent*)e )->pos() );
QListViewItem *i = itemAt( vp );
if ( i ) {
setSelected( i, TRUE );
e->accept();
if ( i != dropItem ) {
autoopen_timer->stop();
dropItem = i;
autoopen_timer->start( autoopenTime );
}
switch ( e->action() ) {
case QDropEvent::Copy:
break;
case QDropEvent::Move:
e->acceptAction();
break;
case QDropEvent::Link:
e->acceptAction();
break;
default:
;
}
} else {
e->ignore();
autoopen_timer->stop();
dropItem = 0;
}
}
void DirectoryView::contentsDragLeaveEvent( QDragLeaveEvent * )
{
autoopen_timer->stop();
dropItem = 0;
setCurrentItem( oldCurrent );
setSelected( oldCurrent, TRUE );
}
void DirectoryView::contentsDropEvent( QDropEvent *e )
{
autoopen_timer->stop();
if ( !QUriDrag::canDecode(e) ) {
e->ignore();
return;
}
QListViewItem *item = itemAt( contentsToViewport(e->pos()) );
if ( item ) {
QStrList lst;
QUriDrag::decode( e, lst );
QString str;
switch ( e->action() ) {
case QDropEvent::Copy:
str = "Copy";
break;
case QDropEvent::Move:
str = "Move";
e->acceptAction();
break;
case QDropEvent::Link:
str = "Link";
e->acceptAction();
break;
default:
str = "Unknown";
}
str += "\n\n";
e->accept();
for ( uint i = 0; i < lst.count(); ++i ) {
QString filename = QDir::convertSeparators(QUriDrag::uriToLocalFile(lst.at(i)));
str += filename + "\n";
}
str += QString( "\nTo\n\n %1" )
.arg( QDir::convertSeparators(fullPath(item)) );
QMessageBox::information( this, "Drop target", str, "Not implemented" );
} else
e->ignore();
}
QString DirectoryView::fullPath(QListViewItem* item)
{
QString fullpath = item->text(0);
while ( (item=item->parent()) ) {
if ( item->parent() )
fullpath = item->text(0) + "/" + fullpath;
else
fullpath = item->text(0) + fullpath;
}
#ifdef Q_WS_WIN
if (fullpath.length() > 2 && fullpath[1] != ':') {
QDir dir(fullpath);
fullpath = dir.currentDirPath().left(2) + fullpath;
}
#endif
return fullpath;
}
void DirectoryView::contentsMousePressEvent( QMouseEvent* e )
{
QListView::contentsMousePressEvent(e);
QPoint p( contentsToViewport( e->pos() ) );
QListViewItem *i = itemAt( p );
if ( i ) {
// if the user clicked into the root decoration of the item, don't try to start a drag!
if ( p.x() > header()->cellPos( header()->mapToActual( 0 ) ) +
treeStepSize() * ( i->depth() + ( rootIsDecorated() ? 1 : 0) ) + itemMargin() ||
p.x() < header()->cellPos( header()->mapToActual( 0 ) ) ) {
presspos = e->pos();
mousePressed = TRUE;
}
}
}
void DirectoryView::contentsMouseMoveEvent( QMouseEvent* e )
{
if ( mousePressed && ( presspos - e->pos() ).manhattanLength() > QApplication::startDragDistance() ) {
mousePressed = FALSE;
QListViewItem *item = itemAt( contentsToViewport(presspos) );
if ( item ) {
QString source = fullPath(item);
if ( QFile::exists(source) ) {
QUriDrag* ud = new QUriDrag(viewport());
ud->setFileNames( source );
if ( ud->drag() )
QMessageBox::information( this, "Drag source",
QString("Delete ") + QDir::convertSeparators(source), "Not implemented" );
}
}
}
}
void DirectoryView::contentsMouseReleaseEvent( QMouseEvent * )
{
mousePressed = FALSE;
}
void DirectoryView::setDir( const QString &s )
{
QListViewItemIterator it( this );
++it;
for ( ; it.current(); ++it ) {
it.current()->setOpen( FALSE );
}
QStringList lst( QStringList::split( "/", s ) );
QListViewItem *item = firstChild();
QStringList::Iterator it2 = lst.begin();
for ( ; it2 != lst.end(); ++it2 ) {
while ( item ) {
if ( item->text( 0 ) == *it2 ) {
item->setOpen( TRUE );
break;
}
item = item->itemBelow();
}
}
if ( item )
setCurrentItem( item );
}
void FileItem::setPixmap( QPixmap *p )
{
pix = p;
setup();
widthChanged( 0 );
invalidateHeight();
repaint();
}
const QPixmap *FileItem::pixmap( int i ) const
{
if ( i )
return 0;
return pix;
}
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