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 "qt4.hpp"
  30 #include "components/playlist/selector.hpp"
  31 #include "playlist_model.hpp"                /* plMimeData */
  32 #include "input_manager.hpp"                 /* MainInputManager, for podcast */
  33
  34 #include <QInputDialog>
  35 #include <QMessageBox>
  36 #include <QMimeData>
  37 #include <QDragMoveEvent>
  38 #include <QTreeWidgetItem>
  39 #include <QHBoxLayout>
  40 #include <QPainter>
  41 #include <QPalette>
  42
  43 #include <vlc_playlist.h>
  44 #include <vlc_services_discovery.h>
  45
  46 void SelectorActionButton::paintEvent( QPaintEvent *event )
  47 {
  48     QPainter p( this );
  49     QColor color = palette().color( QPalette::HighlightedText );
  50     color.setAlpha( 80 );
  51     if( underMouse() )
  52         p.fillRect( rect(), color );
  53     p.setPen( color );
  54     int frame = style()->pixelMetric( QStyle::PM_DefaultFrameWidth, 0, this );
  55     p.drawLine( rect().topLeft() + QPoint( 0, frame ),
  56                 rect().bottomLeft() - QPoint( 0, frame ) );
  57     QFramelessButton::paintEvent( event );
  58 }
  59
  60 PLSelItem::PLSelItem ( QTreeWidgetItem *i, const QString& text )
  61     : qitem(i), lblAction( NULL)
  62 {
  63     layout = new QHBoxLayout( this );
  64     layout->setContentsMargins(0,0,0,0);
  65     layout->addSpacing( 3 );
  66
  67     lbl = new QElidingLabel( text );
  68     layout->addWidget(lbl, 1);
  69
  70     int height = qMax( 22, fontMetrics().height() + 8 );
  71     setMinimumHeight( height );
  72 }
  73
  74 void PLSelItem::addAction( ItemAction act, const QString& tooltip )
  75 {
  76     if( lblAction ) return; //might change later
  77
  78     QIcon icon;
  79
  80     switch( act )
  81     {
  82     case ADD_ACTION:
  83         icon = QIcon( ":/buttons/playlist/playlist_add" ); break;
  84     case RM_ACTION:
  85         icon = QIcon( ":/buttons/playlist/playlist_remove" ); break;
  86     }
  87
  88     lblAction = new SelectorActionButton();
  89     lblAction->setIcon( icon );
  90     lblAction->setMinimumWidth( lblAction->sizeHint().width() + 6 );
  91
  92     if( !tooltip.isEmpty() ) lblAction->setToolTip( tooltip );
  93
  94     layout->addWidget( lblAction, 0 );
  95     lblAction->hide();
  96
  97     CONNECT( lblAction, clicked(), this, triggerAction() );
  98 }
  99
 100
 101 PLSelector::PLSelector( QWidget *p, intf_thread_t *_p_intf )
 102            : QTreeWidget( p ), p_intf(_p_intf)
 103 {
 104     /* Properties */
 105     setFrameStyle( QFrame::NoFrame );
 106     setAttribute( Qt::WA_MacShowFocusRect, false );
 107     viewport()->setAutoFillBackground( false );
 108     setIconSize( QSize( 24,24 ) );
 109     setIndentation( 12 );
 110     setHeaderHidden( true );
 111     setRootIsDecorated( true );
 112     setAlternatingRowColors( false );
 113
 114     /* drops */
 115     viewport()->setAcceptDrops(true);
 116     setDropIndicatorShown(true);
 117     invisibleRootItem()->setFlags( invisibleRootItem()->flags() & ~Qt::ItemIsDropEnabled );
 118
 119     /* Podcasts */
 120     podcastsParent = NULL;
 121     podcastsParentId = -1;
 122
 123     /* Podcast connects */
 124     CONNECT( THEMIM, playlistItemAppended( int, int ),
 125              this, plItemAdded( int, int ) );
 126     CONNECT( THEMIM, playlistItemRemoved( int ),
 127              this, plItemRemoved( int ) );
 128     DCONNECT( THEMIM->getIM(), metaChanged( input_item_t *),
 129               this, inputItemUpdate( input_item_t * ) );
 130
 131     createItems();
 132
 133     /***
 134      * We need to react to both clicks and activation (enter-key) here.
 135      * We use curItem to avoid rebuilding twice.
 136      * See QStyle::SH_ItemView_ActivateItemOnSingleClick
 137      ***/
 138     curItem = NULL;
 139     CONNECT( this, itemActivated( QTreeWidgetItem *, int ),
 140              this, setSource( QTreeWidgetItem *) );
 141     CONNECT( this, itemClicked( QTreeWidgetItem *, int ),
 142              this, setSource( QTreeWidgetItem *) );
 143
 144     /* select the first item */
 145 //  view->setCurrentIndex( model->index( 0, 0, QModelIndex() ) );
 146
 147 #ifdef Q_WS_MAC
 148     setAutoFillBackground( true );
 149     QPalette palette;
 150     palette.setColor( QPalette::Window, QColor(209,215,226) );
 151     setPalette( palette );
 152 #endif
 153     setMinimumHeight( 120 );
 154 }
 155
 156 PLSelector::~PLSelector()
 157 {
 158     if( podcastsParent )
 159     {
 160         int c = podcastsParent->childCount();
 161         for( int i = 0; i < c; i++ )
 162         {
 163             QTreeWidgetItem *item = podcastsParent->child(i);
 164             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 165             vlc_gc_decref( p_input );
 166         }
 167     }
 168 }
 169
 170 PLSelItem * putSDData( PLSelItem* item, const char* name, const char* longname )
 171 {
 172     item->treeItem()->setData( 0, NAME_ROLE, qfu( name ) );
 173     item->treeItem()->setData( 0, LONGNAME_ROLE, qfu( longname ) );
 174     return item;
 175 }
 176
 177 PLSelItem * putPLData( PLSelItem* item, playlist_item_t* plItem )
 178 {
 179     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( plItem ) );
 180 /*    item->setData( 0, PL_ITEM_ID_ROLE, plItem->i_id );
 181     item->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( (void*) plItem->p_input ) ); );*/
 182     return item;
 183 }
 184
 185 void PLSelector::createItems()
 186 {
 187     /* PL */
 188     PLSelItem *pl = putPLData( addItem( PL_ITEM_TYPE, N_("Playlist"), true ),
 189                               THEPL->p_playing );
 190     pl->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PL ) );
 191
 192     /* ML */
 193     PLSelItem *ml = putPLData( addItem( PL_ITEM_TYPE, N_("Media Library"), true ),
 194                               THEPL->p_media_library );
 195     ml->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_ML ) );
 196
 197     /* SQL ML */
 198     addItem( SQL_ML_TYPE, "SQL Media Library" )->treeItem();
 199
 200     /* SD nodes */
 201     QTreeWidgetItem *mycomp = addItem( CATEGORY_TYPE, N_("My Computer") )->treeItem();
 202     QTreeWidgetItem *devices = addItem( CATEGORY_TYPE, N_("Devices") )->treeItem();
 203     QTreeWidgetItem *lan = addItem( CATEGORY_TYPE, N_("Local Network") )->treeItem();
 204     QTreeWidgetItem *internet = addItem( CATEGORY_TYPE, N_("Internet") )->treeItem();
 205
 206     /* SD subnodes */
 207     char **ppsz_longnames;
 208     int *p_categories;
 209     char **ppsz_names = vlc_sd_GetNames( THEPL, &ppsz_longnames, &p_categories );
 210     if( !ppsz_names )
 211         return;
 212
 213     char **ppsz_name = ppsz_names, **ppsz_longname = ppsz_longnames;
 214     int *p_category = p_categories;
 215     for( ; *ppsz_name; ppsz_name++, ppsz_longname++, p_category++ )
 216     {
 217         //msg_Dbg( p_intf, "Adding a SD item: %s", *ppsz_longname );
 218
 219         PLSelItem *selItem;
 220         switch( *p_category )
 221         {
 222         case SD_CAT_INTERNET:
 223             {
 224             selItem = addItem( SD_TYPE, *ppsz_longname, false, internet );
 225             if( !strncmp( *ppsz_name, "podcast", 7 ) )
 226             {
 227                 selItem->treeItem()->setData( 0, SPECIAL_ROLE, QVariant( IS_PODCAST ) );
 228                 selItem->addAction( ADD_ACTION, qtr( "Subscribe to a podcast" ) );
 229                 CONNECT( selItem, action( PLSelItem* ), this, podcastAdd( PLSelItem* ) );
 230                 podcastsParent = selItem->treeItem();
 231             }
 232             }
 233             break;
 234         case SD_CAT_DEVICES:
 235             selItem = addItem( SD_TYPE, *ppsz_longname, false, devices );
 236             break;
 237         case SD_CAT_LAN:
 238             selItem = addItem( SD_TYPE, *ppsz_longname, false, lan );
 239             break;
 240         case SD_CAT_MYCOMPUTER:
 241             selItem = addItem( SD_TYPE, *ppsz_longname, false, mycomp );
 242             break;
 243         default:
 244             selItem = addItem( SD_TYPE, *ppsz_longname );
 245         }
 246
 247         putSDData( selItem, *ppsz_name, *ppsz_longname );
 248         free( *ppsz_name );
 249         free( *ppsz_longname );
 250     }
 251     free( ppsz_names );
 252     free( ppsz_longnames );
 253     free( p_categories );
 254
 255     if( mycomp->childCount() == 0 ) delete mycomp;
 256     if( devices->childCount() == 0 ) delete devices;
 257     if( lan->childCount() == 0 ) delete lan;
 258     if( internet->childCount() == 0 ) delete internet;
 259 }
 260
 261 void PLSelector::setSource( QTreeWidgetItem *item )
 262 {
 263     if( !item || item == curItem )
 264         return;
 265
 266     curItem = item;
 267
 268     bool b_ok;
 269     int i_type = item->data( 0, TYPE_ROLE ).toInt( &b_ok );
 270     if( !b_ok || i_type == CATEGORY_TYPE )
 271         return;
 272
 273     bool sd_loaded;
 274     if( i_type == SD_TYPE )
 275     {
 276         QString qs = item->data( 0, NAME_ROLE ).toString();
 277         sd_loaded = playlist_IsServicesDiscoveryLoaded( THEPL, qtu( qs ) );
 278         if( !sd_loaded )
 279             playlist_ServicesDiscoveryAdd( THEPL, qtu( qs ) );
 280     }
 281     else if( i_type == SQL_ML_TYPE )
 282     {
 283         emit categoryActivated( NULL, true );
 284         return;
 285     }
 286
 287     /* */
 288     playlist_Lock( THEPL );
 289     playlist_item_t *pl_item = NULL;
 290
 291     /* Special case for podcast */
 292     // FIXME: simplify
 293     if( i_type == SD_TYPE )
 294     {
 295         /* Find the right item for the SD */
 296         pl_item = playlist_ChildSearchName( THEPL->p_root,
 297                       qtu( item->data(0, LONGNAME_ROLE ).toString() ) );
 298
 299         /* Podcasts */
 300         if( item->data( 0, SPECIAL_ROLE ).toInt() == IS_PODCAST )
 301         {
 302             if( pl_item && !sd_loaded )
 303             {
 304                 podcastsParentId = pl_item->i_id;
 305                 for( int i=0; i < pl_item->i_children; i++ )
 306                     addPodcastItem( pl_item->pp_children[i] );
 307             }
 308             pl_item = NULL; //to prevent activating it
 309         }
 310     }
 311     else
 312         pl_item = item->data( 0, PL_ITEM_ROLE ).value<playlist_item_t*>();
 313
 314     playlist_Unlock( THEPL );
 315
 316     /* */
 317     if( pl_item )
 318         emit categoryActivated( pl_item, false );
 319 }
 320
 321 PLSelItem * PLSelector::addItem (
 322     SelectorItemType type, const char* str, bool drop,
 323     QTreeWidgetItem* parentItem )
 324 {
 325   QTreeWidgetItem *item = parentItem ?
 326       new QTreeWidgetItem( parentItem ) : new QTreeWidgetItem( this );
 327
 328   PLSelItem *selItem = new PLSelItem( item, qtr( str ) );
 329   setItemWidget( item, 0, selItem );
 330   item->setData( 0, TYPE_ROLE, (int)type );
 331   if( !drop ) item->setFlags( item->flags() & ~Qt::ItemIsDropEnabled );
 332
 333   return selItem;
 334 }
 335
 336 PLSelItem *PLSelector::addPodcastItem( playlist_item_t *p_item )
 337 {
 338     vlc_gc_incref( p_item->p_input );
 339
 340     char *psz_name = input_item_GetName( p_item->p_input );
 341     PLSelItem *item = addItem( PL_ITEM_TYPE,  psz_name, false, podcastsParent );
 342     free( psz_name );
 343
 344     item->addAction( RM_ACTION, qtr( "Remove this podcast subscription" ) );
 345     item->treeItem()->setData( 0, PL_ITEM_ROLE, QVariant::fromValue( p_item ) );
 346     item->treeItem()->setData( 0, PL_ITEM_ID_ROLE, QVariant(p_item->i_id) );
 347     item->treeItem()->setData( 0, IN_ITEM_ROLE, QVariant::fromValue( p_item->p_input ) );
 348     CONNECT( item, action( PLSelItem* ), this, podcastRemove( PLSelItem* ) );
 349     return item;
 350 }
 351
 352 QStringList PLSelector::mimeTypes() const
 353 {
 354     QStringList types;
 355     types << "vlc/qt-input-items";
 356     return types;
 357 }
 358
 359 bool PLSelector::dropMimeData ( QTreeWidgetItem * parent, int,
 360     const QMimeData * data, Qt::DropAction )
 361 {
 362     if( !parent ) return false;
 363
 364     QVariant type = parent->data( 0, TYPE_ROLE );
 365     if( type == QVariant() ) return false;
 366
 367     int i_truth = parent->data( 0, SPECIAL_ROLE ).toInt();
 368     if( i_truth != IS_PL && i_truth != IS_ML ) return false;
 369
 370     bool to_pl = ( i_truth == IS_PL );
 371
 372     const PlMimeData *plMimeData = qobject_cast<const PlMimeData*>( data );
 373     if( !plMimeData ) return false;
 374
 375     QList<input_item_t*> inputItems = plMimeData->inputItems();
 376
 377     playlist_Lock( THEPL );
 378
 379     foreach( input_item_t *p_input, inputItems )
 380     {
 381         playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input );
 382         if( !p_item ) continue;
 383
 384         playlist_NodeAddCopy( THEPL, p_item,
 385                               to_pl ? THEPL->p_playing : THEPL->p_media_library,
 386                               PLAYLIST_END );
 387     }
 388
 389     playlist_Unlock( THEPL );
 390
 391     return true;
 392 }
 393
 394 void PLSelector::dragMoveEvent ( QDragMoveEvent * event )
 395 {
 396     event->setDropAction( Qt::CopyAction );
 397     QAbstractItemView::dragMoveEvent( event );
 398 }
 399
 400 void PLSelector::plItemAdded( int item, int parent )
 401 {
 402     if( parent != podcastsParentId ) return;
 403
 404     playlist_Lock( THEPL );
 405
 406     playlist_item_t *p_item = playlist_ItemGetById( THEPL, item );
 407     if( !p_item ) {
 408         playlist_Unlock( THEPL );
 409         return;
 410     }
 411
 412     int c = podcastsParent->childCount();
 413     for( int i = 0; i < c; i++ )
 414     {
 415         QTreeWidgetItem *podItem = podcastsParent->child(i);
 416         if( podItem->data( 0, PL_ITEM_ID_ROLE ).toInt() == item )
 417         {
 418           //msg_Dbg( p_intf, "Podcast already in: (%d) %s", item, p_item->p_input->psz_uri);
 419           playlist_Unlock( THEPL );
 420           return;
 421         }
 422     }
 423
 424     //msg_Dbg( p_intf, "Adding podcast: (%d) %s", item, p_item->p_input->psz_uri );
 425     addPodcastItem( p_item );
 426
 427     playlist_Unlock( THEPL );
 428
 429     podcastsParent->setExpanded( true );
 430 }
 431
 432 void PLSelector::plItemRemoved( int id )
 433 {
 434     int c = podcastsParent->childCount();
 435     for( int i = 0; i < c; i++ )
 436     {
 437         QTreeWidgetItem *item = podcastsParent->child(i);
 438         if( item->data( 0, PL_ITEM_ID_ROLE ).toInt() == id )
 439         {
 440             input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 441             //msg_Dbg( p_intf, "Removing podcast: (%d) %s", id, p_input->psz_uri );
 442             vlc_gc_decref( p_input );
 443             delete item;
 444             return;
 445         }
 446     }
 447 }
 448
 449 void PLSelector::inputItemUpdate( input_item_t *arg )
 450 {
 451     int c = podcastsParent->childCount();
 452     for( int i = 0; i < c; i++ )
 453     {
 454         QTreeWidgetItem *item = podcastsParent->child(i);
 455         input_item_t *p_input = item->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 456         if( p_input == arg )
 457         {
 458             PLSelItem *si = itemWidget( item );
 459             char *psz_name = input_item_GetName( p_input );
 460             si->setText( qfu( psz_name ) );
 461             free( psz_name );
 462             return;
 463         }
 464     }
 465 }
 466
 467 void PLSelector::podcastAdd( PLSelItem * )
 468 {
 469     bool ok;
 470     QString url = QInputDialog::getText( this, qtr( "Subscribe" ),
 471                                          qtr( "Enter URL of the podcast to subscribe to:" ),
 472                                          QLineEdit::Normal, QString(), &ok );
 473     if( !ok || url.isEmpty() ) return;
 474
 475     setSource( podcastsParent ); //to load the SD in case it's not loaded
 476
 477     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name( p_intf->p_libvlc, "podcast" );
 478     if( !p_obj ) return;
 479
 480     QString request("ADD:");
 481     request += url.trimmed();
 482     var_SetString( p_obj, "podcast-request", qtu( request ) );
 483     vlc_object_release( p_obj );
 484 }
 485
 486 void PLSelector::podcastRemove( PLSelItem* item )
 487 {
 488     QString question ( qtr( "Do you really want to unsubscribe from %1?" ) );
 489     question = question.arg( item->text() );
 490     QMessageBox::StandardButton res =
 491         QMessageBox::question( this, qtr( "Unsubscribe" ), question,
 492                                QMessageBox::Ok | QMessageBox::Cancel,
 493                                QMessageBox::Cancel );
 494     if( res == QMessageBox::Cancel ) return;
 495
 496     input_item_t *input = item->treeItem()->data( 0, IN_ITEM_ROLE ).value<input_item_t*>();
 497     if( !input ) return;
 498
 499     vlc_object_t *p_obj = (vlc_object_t*) vlc_object_find_name(
 500         p_intf->p_libvlc, "podcast" );
 501     if( !p_obj ) return;
 502
 503     QString request("RM:");
 504     char *psz_uri = input_item_GetURI( input );
 505     request += qfu( psz_uri );
 506     var_SetString( p_obj, "podcast-request", qtu( request ) );
 507     vlc_object_release( p_obj );
 508     free( psz_uri );
 509 }
 510
 511 PLSelItem * PLSelector::itemWidget( QTreeWidgetItem *item )
 512 {
 513     return ( static_cast<PLSelItem*>( QTreeWidget::itemWidget( item, 0 ) ) );
 514 }
 515
 516 void PLSelector::drawBranches ( QPainter * painter, const QRect & rect, const QModelIndex & index ) const
 517 {
 518     if( !model()->hasChildren( index ) ) return;
 519     QStyleOption option;
 520     option.initFrom( this );
 521     option.rect = rect.adjusted( rect.width() - indentation(), 0, 0, 0 );
 522     style()->drawPrimitive( isExpanded( index ) ?
 523                             QStyle::PE_IndicatorArrowDown :
 524                             QStyle::PE_IndicatorArrowRight, &option, painter );
 525 }
 526
 527 void PLSelector::getCurrentSelectedItem( int* type, QString *string)
 528 {
 529     *type = currentItem()->data( 0, TYPE_ROLE ).toInt();
 530     *string = currentItem()->data( 0, NAME_ROLE ).toString();
 531 }
 532
 533 void PLSelector::wheelEvent( QWheelEvent *e )
 534 {
 535     // Accept this event in order to prevent unwanted volume up/down changes
 536     e->accept();
 537 }