git.sesse.net Git - vlc/blob - modules/gui/qt4/components/playlist/selector.cpp

   1 /*****************************************************************************
   2  * selector.cpp : Playlist source selector
   3  ****************************************************************************
   4  * Copyright (C) 2006-2009 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Jean-Baptiste Kempf
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  23  *****************************************************************************/
  24
  25 #ifdef HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include <assert.h>
  30
  31 #include "components/playlist/selector.hpp"
  32 #include "playlist_item.hpp"
  33 #include "qt4.hpp"
  34 #include "../../dialogs_provider.hpp"
  35 #include "playlist.hpp"
  36 #include "util/customwidgets.hpp"
  37
  38 #include <QVBoxLayout>
  39 #include <QHeaderView>
  40 #include <QMimeData>
  41 #include <QInputDialog>
  42 #include <QMessageBox>
  43
  44 #include <vlc_playlist.h>
  45 #include <vlc_services_discovery.h>
  46
  47 void SelectorActionButton::paintEvent( QPaintEvent *event )
  48 {
  49     QPainter p( this );
  50     QColor color = palette().color( QPalette::HighlightedText );
  51     color.setAlpha( 80 );
  52     if( underMouse() )
  53         p.fillRect( rect(), color );
  54     p.setPen( color );
  55     int frame = style()->pixelMetric( QStyle::PM_DefaultFrameWidth, 0, this );
  56     p.drawLine( rect().topLeft() + QPoint( 0, frame ),
  57                 rect().bottomLeft() - QPoint( 0, frame ) );
  58     QVLCFramelessButton::paintEvent( event );
  59 }
  60
  61 PLSelItem::PLSelItem ( QTreeWidgetItem *i, const QString& text )
  62     : qitem(i), lblAction( NULL)
  63 {
  64     layout = new QHBoxLayout();
  65     layout->setContentsMargins(0,0,0,0);
  66     layout->addSpacing( 3 );
  67
  68     lbl = new QVLCElidingLabel( text );
  69
  70     layout->addWidget(lbl, 1);
  71
  72     setLayout( layout );
  73
  74     int height = qMax( 22, fontMetrics().height() + 8 );
  75     setMinimumHeight( height );
  76 }
  77
  78 void PLSelItem::addAction( ItemAction act, const QString& tooltip )
  79 {
  80     if( lblAction ) return; //might change later
  81
  82     QIcon icon;
  83
  84     switch( act )
  85     {
  86     case ADD_ACTION:
  87         icon = QIcon( ":/buttons/playlist/playlist_add" ); break;
  88     case RM_ACTION:
  89         icon = QIcon( ":/buttons/playlist/playlist_remove" ); break;
  90     }
  91
  92     lblAction = new SelectorActionButton();
  93     lblAction->setIcon( icon );
  94     lblAction->setMinimumWidth( lblAction->sizeHint().width() + 6 );
  95
  96     if( !tooltip.isEmpty() ) lblAction->setToolTip( tooltip );
  97
  98     layout->addWidget( lblAction, 0 );
  99     lblAction->hide();
 100
 101     CONNECT( lblAction, clicked(), this, triggerAction() );
 102 }
 103
 104 void PLSelItem::showAction() { if( lblAction ) lblAction->show(); }
 105
 106 void PLSelItem::hideAction() { if( lblAction ) lblAction->hide(); }
 107
 108 void PLSelItem::setText( const QString& text ) { lbl->setText( text ); }
 109
 110 void PLSelItem::enterEvent( QEvent *ev ){ showAction(); }
 111
 112 void PLSelItem::leaveEvent( QEvent *ev ){ hideAction(); }
 113
 114 PLSelector::PLSelector( QWidget *p, intf_thread_t *_p_intf )
 115            : QTreeWidget( p ), p_intf(_p_intf)
 116 {
 117     setFrameStyle( QFrame::NoFrame );
 118     viewport()->setAutoFillBackground( false );
 119     setIconSize( QSize( 24,24 ) );
 120     setIndentation( 12 );
 121     header()->hide();
 122     setRootIsDecorated( true );
 123     setAlternatingRowColors( false );
 124     podcastsParent = NULL;
 125     podcastsParentId = -1;
 126
 127     viewport()->setAcceptDrops(true);
 128     setDropIndicatorShown(true);
 129     invisibleRootItem()->setFlags( invisibleRootItem()->flags() & ~Qt::ItemIsDropEnabled );
 130
 131     CONNECT( THEMIM, playlistItemAppended( int, int ),
 132              this, plItemAdded( int, int ) );
 133     CONNECT( THEMIM, playlistItemRemoved( int ),
 134              this, plItemRemoved( int ) );
 135     CONNECT( THEMIM->getIM(), metaChanged( input_item_t *),
 136             this, inputItemUpdate( input_item_t * ) );
 137
 138     createItems();
 139     CONNECT( this, itemActivated( QTreeWidgetItem *, int ),
 140              this, setSource( QTreeWidgetItem *) );
 141     CONNECT( this, itemClicked( QTreeWidgetItem *, int ),
 142              this, setSource( QTreeWidgetItem *) );
 143
 144     /* I believe this is unnecessary, seeing
 145        QStyle::SH_ItemView_ActivateItemOnSingleClick
 146         CONNECT( view, itemClicked( QTreeWidgetItem *, int ),
 147              this, setSource( QTreeWidgetItem *) ); */
 148
 149     /* select the first item */
 150 //  view->setCurrentIndex( model->index( 0, 0, QModelIndex() ) );
 151 }
 152
 153 PLSelector::~PLSelector()
 154 {
 155     if( podcastsParent )
 156     {
 157         int c = podcastsParent->childCount();
 158         for( int i = 0; i < c; i++ )
 159         {
 160             QTreeWidgetItem *item = podcastsParent->child(i);
 161             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 162             vlc_gc_decref( p_input );
 163         }
 164     }
 165 }
 166
 167 void PLSelector::setSource( QTreeWidgetItem *item )
 168 {
 169     if( !item )
 170         return;
 171
 172     bool b_ok;
 173     int i_type = item->data( 0, TYPE_ROLE ).toInt( &b_ok );
 174     if( !b_ok || i_type == CATEGORY_TYPE )
 175         return;
 176
 177     bool sd_loaded;
 178     if( i_type == SD_TYPE )
 179     {
 180         QString qs = item->data( 0, NAME_ROLE ).toString();
 181         sd_loaded = playlist_IsServicesDiscoveryLoaded( THEPL, qtu( qs ) );
 182         if( !sd_loaded )
 183             playlist_ServicesDiscoveryAdd( THEPL, qtu( qs ) );
 184     }
 185
 186     playlist_Lock( THEPL );
 187
 188     playlist_item_t *pl_item = NULL;
 189
 190     if( i_type == SD_TYPE )
 191     {
 192         pl_item = playlist_ChildSearchName( THEPL->p_root, qtu( item->data(0, LONGNAME_ROLE ).toString() ) );
 193         if( item->data( 0, SPECIAL_ROLE ).toInt() == IS_PODCAST )
 194         {
 195             if( pl_item && !sd_loaded )
 196             {
 197                 podcastsParentId = pl_item->i_id;
 198                 for( int i=0; i < pl_item->i_children; i++ )
 199                     addPodcastItem( pl_item->pp_children[i] );
 200             }
 201             pl_item = NULL; //to prevent activating it
 202         }
 203     }
 204     else
 205         pl_item = item->data( 0, PL_ITEM_ROLE ).value<playlist_item_t*>();
 206
 207     playlist_Unlock( THEPL );
 208
 209     if( pl_item )
 210        emit activated( pl_item );
 211 }
 212
 213 PLSelItem * PLSelector::addItem (
 214   SelectorItemType type, const QString& str, bool drop,
 215   QTreeWidgetItem* parentItem )
 216 {
 217   QTreeWidgetItem *item = parentItem ?
 218       new QTreeWidgetItem( parentItem ) : new QTreeWidgetItem( this );
 219   PLSelItem *selItem = new PLSelItem( item, str );
 220   setItemWidget( item, 0, selItem );
 221   item->setData( 0, TYPE_ROLE, (int)type );
 222   if( !drop ) item->setFlags( item->flags() & ~Qt::ItemIsDropEnabled );
 223
 224   return selItem;
 225 }
 226
 227 PLSelItem * putSDData( PLSelItem* item, const char* name, const char* longname )
 228 {
 229     item->treeItem()->setData( 0, NAME_ROLE, qfu( name ) );
 230     item->treeItem()->setData( 0, LONGNAME_ROLE, qfu( longname ) );
 231     return item;
 232 }
 233
 234 PLSelItem * putPLData( PLSelItem* item, playlist_item_t* plItem )
 235 {
 236     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( plItem ) );
 237 /*    item->setData( 0, PL_ITEM_ID_ROLE, plItem->i_id );
 238     item->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( (void*) plItem->p_input ) ); );*/
 239     return item;
 240 }
 241
 242 PLSelItem *PLSelector::addPodcastItem( playlist_item_t *p_item )
 243 {
 244     vlc_gc_incref( p_item->p_input );
 245     char *psz_name = input_item_GetName( p_item->p_input );
 246     PLSelItem *item = addItem(
 247             PL_ITEM_TYPE, qfu( psz_name ), false, podcastsParent );
 248     item->addAction( RM_ACTION, qtr( "Remove this podcast subscription" ) );
 249     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( p_item ) );
 250     item->treeItem()->setData( 0, PL_ITEM_ID_ROLE, QVariant(p_item->i_id) );
 251     item->treeItem()->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( p_item->p_input ) );
 252     CONNECT( item, action( PLSelItem* ), this, podcastRemove( PLSelItem* ) );
 253     free( psz_name );
 254     return item;
 255 }
 256
 257 void PLSelector::createItems()
 258 {
 259     PLSelItem *pl = putPLData( addItem( PL_ITEM_TYPE, qtr( "Playlist" ), true ),
 260                               THEPL->p_playing );
 261     pl->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PL ) );
 262
 263     PLSelItem *ml = putPLData( addItem( PL_ITEM_TYPE, qtr( "Media Library" ), true ),
 264                               THEPL->p_media_library );
 265     ml->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_ML ) );
 266
 267     QTreeWidgetItem *mycomp = addItem( CATEGORY_TYPE, qtr( "My Computer" ),
 268                                         false )->treeItem();
 269     QTreeWidgetItem *devices = addItem( CATEGORY_TYPE, qtr( "Devices" ),
 270                                         false )->treeItem();
 271     QTreeWidgetItem *lan = addItem( CATEGORY_TYPE, qtr( "Local Network" ),
 272                                     false )->treeItem();
 273     QTreeWidgetItem *internet = addItem( CATEGORY_TYPE, qtr( "Internet" ),
 274                                           false )->treeItem();;
 275
 276     char **ppsz_longnames;
 277     int *p_categories;
 278     char **ppsz_names = vlc_sd_GetNames( THEPL, &ppsz_longnames, &p_categories );
 279     if( !ppsz_names )
 280         return;
 281
 282     char **ppsz_name = ppsz_names, **ppsz_longname = ppsz_longnames;
 283     int *p_category = p_categories;
 284     for( ; *ppsz_name; ppsz_name++, ppsz_longname++, p_category++ )
 285     {
 286         //msg_Dbg( p_intf, "Adding a SD item: %s", *ppsz_longname );
 287
 288         if( *p_category == SD_CAT_INTERNET )
 289         {
 290             PLSelItem *selItem = addItem( SD_TYPE, *ppsz_longname, false, internet );
 291             putSDData( selItem, *ppsz_name, *ppsz_longname );
 292             if( !strncmp( *ppsz_name, "podcast", 7 ) )
 293             {
 294                 selItem->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PODCAST ) );
 295                 selItem->addAction( ADD_ACTION, qtr( "Subscribe to a podcast" ) );
 296                 CONNECT( selItem, action( PLSelItem* ), this, podcastAdd( PLSelItem* ) );
 297                 podcastsParent = selItem->treeItem();
 298             }
 299         }
 300         else if( *p_category == SD_CAT_DEVICES )
 301         {
 302             putSDData( addItem( SD_TYPE, *ppsz_longname, false, devices ),
 303                        *ppsz_name, *ppsz_longname );
 304         }
 305         else if( *p_category == SD_CAT_LAN )
 306         {
 307             putSDData( addItem( SD_TYPE, *ppsz_longname, false, lan ),
 308                        *ppsz_name, *ppsz_longname );
 309         }
 310         else if( *p_category == SD_CAT_MYCOMPUTER )
 311         {
 312             putSDData( addItem( SD_TYPE, *ppsz_longname, false, mycomp ),
 313                        *ppsz_name, *ppsz_longname );
 314         }
 315         else
 316         {
 317             putSDData( addItem( SD_TYPE, qtr( *ppsz_longname ), false ),
 318                        *ppsz_name, *ppsz_longname );
 319         }
 320
 321         free( *ppsz_name );
 322         free( *ppsz_longname );
 323     }
 324     free( ppsz_names );
 325     free( ppsz_longnames );
 326     free( p_categories );
 327
 328     if( mycomp->childCount() == 0 ) delete mycomp;
 329     if( devices->childCount() == 0 ) delete devices;
 330     if( lan->childCount() == 0 ) delete lan;
 331     if( internet->childCount() == 0 ) delete internet;
 332 }
 333
 334 QStringList PLSelector::mimeTypes() const
 335 {
 336     QStringList types;
 337     types << "vlc/qt-playlist-item";
 338     return types;
 339 }
 340
 341 bool PLSelector::dropMimeData ( QTreeWidgetItem * parent, int index,
 342   const QMimeData * data, Qt::DropAction action )
 343 {
 344     if( !parent ) return false;
 345
 346     QVariant type = parent->data( 0, TYPE_ROLE );
 347     if( type == QVariant() ) return false;
 348     int i_truth = parent->data( 0, SPECIAL_ROLE ).toInt();
 349
 350     if( i_truth != IS_PL && i_truth != IS_ML ) return false;
 351     bool to_pl = ( i_truth == IS_PL );
 352
 353     if( data->hasFormat( "vlc/qt-playlist-item" ) )
 354     {
 355         QByteArray encodedData = data->data( "vlc/qt-playlist-item" );
 356         QDataStream stream( &encodedData, QIODevice::ReadOnly );
 357         playlist_Lock( THEPL );
 358         while( !stream.atEnd() )
 359         {
 360             PLItem *item;
 361             stream.readRawData( (char*)&item, sizeof(PLItem*) );
 362             input_item_t *pl_input =item->inputItem();
 363             playlist_AddExt ( THEPL,
 364                 pl_input->psz_uri, pl_input->psz_name,
 365                 PLAYLIST_APPEND | PLAYLIST_SPREPARSE, PLAYLIST_END,
 366                 pl_input->i_duration,
 367                 pl_input->i_options, pl_input->ppsz_options, pl_input->optflagc,
 368                 to_pl, true );
 369         }
 370         playlist_Unlock( THEPL );
 371     }
 372     return true;
 373 }
 374
 375 void PLSelector::plItemAdded( int item, int parent )
 376 {
 377     if( parent != podcastsParentId ) return;
 378
 379     playlist_Lock( THEPL );
 380
 381     playlist_item_t *p_item = playlist_ItemGetById( THEPL, item );
 382     if( !p_item ) {
 383         playlist_Unlock( THEPL );
 384         return;
 385     }
 386
 387     int c = podcastsParent->childCount();
 388     for( int i = 0; i < c; i++ )
 389     {
 390         QTreeWidgetItem *podItem = podcastsParent->child(i);
 391         if( podItem->data( 0, PL_ITEM_ID_ROLE ).toInt() == item )
 392         {
 393           //msg_Dbg( p_intf, "Podcast already in: (%d) %s", item, p_item->p_input->psz_uri);
 394           playlist_Unlock( THEPL );
 395           return;
 396         }
 397     }
 398
 399     //msg_Dbg( p_intf, "Adding podcast: (%d) %s", item, p_item->p_input->psz_uri );
 400     addPodcastItem( p_item );
 401
 402     playlist_Unlock( THEPL );
 403
 404     podcastsParent->setExpanded( true );
 405 }
 406
 407 void PLSelector::plItemRemoved( int id )
 408 {
 409     int c = podcastsParent->childCount();
 410     for( int i = 0; i < c; i++ )
 411     {
 412         QTreeWidgetItem *item = podcastsParent->child(i);
 413         if( item->data( 0, PL_ITEM_ID_ROLE ).toInt() == id )
 414         {
 415             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 416             //msg_Dbg( p_intf, "Removing podcast: (%d) %s", id, p_input->psz_uri );
 417             vlc_gc_decref( p_input );
 418             delete item;
 419             return;
 420         }
 421     }
 422 }
 423
 424 void PLSelector::inputItemUpdate( input_item_t *arg )
 425 {
 426     int c = podcastsParent->childCount();
 427     for( int i = 0; i < c; i++ )
 428     {
 429         QTreeWidgetItem *item = podcastsParent->child(i);
 430         input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 431         if( p_input == arg )
 432         {
 433             PLSelItem *si = itemWidget( item );
 434             char *psz_name = input_item_GetName( p_input );
 435             si->setText( qfu( psz_name ) );
 436             free( psz_name );
 437             return;
 438         }
 439     }
 440 }
 441
 442 void PLSelector::podcastAdd( PLSelItem* item )
 443 {
 444     bool ok;
 445     QString url = QInputDialog::getText( this, qtr( "Subscribe" ),
 446                                          qtr( "Enter URL of the podcast to subscribe to:" ),
 447                                          QLineEdit::Normal, QString(), &ok );
 448     if( !ok || url.isEmpty() ) return;
 449
 450     setSource( podcastsParent ); //to load the SD in case it's not loaded
 451
 452     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 453         p_intf->p_libvlc, "podcast", FIND_CHILD );
 454     if( !p_obj ) return;
 455
 456     QString request("ADD:");
 457     request += url;
 458     var_SetString( p_obj, "podcast-request", qtu( request ) );
 459     vlc_object_release( p_obj );
 460 }
 461
 462 void PLSelector::podcastRemove( PLSelItem* item )
 463 {
 464     QString question ( qtr( "Do you really want to unsubscribe from %1?" ) );
 465     question = question.arg( item->text() );
 466     QMessageBox::StandardButton res =
 467         QMessageBox::question( this, qtr( "Unsubscribe" ), question,
 468                                QMessageBox::Ok | QMessageBox::Cancel,
 469                                QMessageBox::Cancel );
 470     if( res == QMessageBox::Cancel ) return;
 471
 472     input_item_t *input = item->treeItem()->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 473     if( !input ) return;
 474
 475     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 476         p_intf->p_libvlc, "podcast", FIND_CHILD );
 477     if( !p_obj ) return;
 478
 479     QString request("RM:");
 480     char *psz_uri = input_item_GetURI( input );
 481     request += qfu( psz_uri );
 482     var_SetString( p_obj, "podcast-request", qtu( request ) );
 483     vlc_object_release( p_obj );
 484     free( psz_uri );
 485 }
 486
 487 PLSelItem * PLSelector::itemWidget( QTreeWidgetItem *item )
 488 {
 489     return ( static_cast<PLSelItem*>( QTreeWidget::itemWidget( item, 0 ) ) );
 490 }
 491
 492 void PLSelector::drawBranches ( QPainter * painter, const QRect & rect, const QModelIndex & index ) const
 493 {
 494     if( !model()->hasChildren( index ) ) return;
 495     QStyleOption option;
 496     option.initFrom( this );
 497     option.rect = rect.adjusted( rect.width() - indentation(), 0, 0, 0 );
 498     style()->drawPrimitive( isExpanded( index ) ?
 499                             QStyle::PE_IndicatorArrowDown :
 500                             QStyle::PE_IndicatorArrowRight, &option, painter );
 501 }