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

   1 /*****************************************************************************
   2  * standardpanel.cpp : The "standard" playlist panel : just a treeview
   3  ****************************************************************************
   4  * Copyright © 2000-2010 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Jean-Baptiste Kempf <jb@videolan.org>
   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 "components/playlist/standardpanel.hpp"
  30
  31 #include "components/playlist/playlist_model.hpp" /* PLModel */
  32 #include "components/playlist/views.hpp"          /* 3 views */
  33 #include "components/playlist/selector.hpp"       /* PLSelector */
  34 #include "menus.hpp"                              /* Popup */
  35 #include "input_manager.hpp"                      /* THEMIM */
  36
  37 #include "sorting.h"                              /* Columns order */
  38
  39 #include <vlc_services_discovery.h>               /* SD_CMD_SEARCH */
  40
  41 #include <QHeaderView>
  42 #include <QModelIndexList>
  43 #include <QMenu>
  44 #include <QKeyEvent>
  45 #include <QWheelEvent>
  46 #include <QStackedLayout>
  47 #include <QSignalMapper>
  48 #include <QSettings>
  49
  50 #include <assert.h>
  51
  52 StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
  53                                   intf_thread_t *_p_intf,
  54                                   playlist_item_t *p_root,
  55                                   PLSelector *_p_selector,
  56                                   PLModel *_p_model )
  57                 : QWidget( _parent ), p_intf( _p_intf ),
  58                   p_selector( _p_selector ), model( _p_model )
  59 {
  60     viewStack = new QStackedLayout( this );
  61     viewStack->setSpacing( 0 ); viewStack->setMargin( 0 );
  62     setMinimumWidth( 300 );
  63
  64     iconView    = NULL;
  65     treeView    = NULL;
  66     listView    = NULL;
  67     picFlowView = NULL;
  68
  69     currentRootIndexId  = -1;
  70     lastActivatedId     = -1;
  71
  72     /* Saved Settings */
  73     getSettings()->beginGroup("Playlist");
  74     int i_savedViewMode = getSettings()->value( "view-mode", TREE_VIEW ).toInt();
  75     getSettings()->endGroup();
  76     /* Limit the saved value to a possible one inside [0, VIEW_COUNT[ */
  77     if(i_savedViewMode < 0 || i_savedViewMode >= VIEW_COUNT)
  78         i_savedViewMode = 0;
  79
  80     showView( i_savedViewMode );
  81
  82     DCONNECT( THEMIM, leafBecameParent( input_item_t *),
  83               this, browseInto( input_item_t * ) );
  84
  85     CONNECT( model, currentChanged( const QModelIndex& ),
  86              this, handleExpansion( const QModelIndex& ) );
  87     CONNECT( model, rootChanged(), this, handleRootChange() );
  88
  89     setRoot( p_root, false );
  90 }
  91
  92 StandardPLPanel::~StandardPLPanel()
  93 {
  94     getSettings()->beginGroup("Playlist");
  95     if( treeView )
  96         getSettings()->setValue( "headerStateV2", treeView->header()->saveState() );
  97     if( currentView == treeView )
  98         getSettings()->setValue( "view-mode", TREE_VIEW );
  99     else if( currentView == listView )
 100         getSettings()->setValue( "view-mode", LIST_VIEW );
 101     else if( currentView == iconView )
 102         getSettings()->setValue( "view-mode", ICON_VIEW );
 103     else if( currentView == picFlowView )
 104         getSettings()->setValue( "view-mode", PICTUREFLOW_VIEW );
 105     getSettings()->endGroup();
 106 }
 107
 108 /* Unused anymore, but might be useful, like in right-click menu */
 109 void StandardPLPanel::gotoPlayingItem()
 110 {
 111     currentView->scrollTo( model->currentIndex() );
 112 }
 113
 114 void StandardPLPanel::handleExpansion( const QModelIndex& index )
 115 {
 116     assert( currentView );
 117     if( currentRootIndexId != -1 && currentRootIndexId != model->itemId( index.parent() ) )
 118         browseInto( index.parent() );
 119     currentView->scrollTo( index );
 120 }
 121
 122 void StandardPLPanel::handleRootChange()
 123 {
 124     browseInto();
 125 }
 126
 127 void StandardPLPanel::popupPlView( const QPoint &point )
 128 {
 129     QModelIndex index = currentView->indexAt( point );
 130     QPoint globalPoint = currentView->viewport()->mapToGlobal( point );
 131     QItemSelectionModel *selection = currentView->selectionModel();
 132     QModelIndexList list = selection->selectedIndexes();
 133
 134     if( !model->popup( index, globalPoint, list ) )
 135         QVLCMenu::PopupMenu( p_intf, true );
 136 }
 137
 138 void StandardPLPanel::popupSelectColumn( QPoint pos )
 139 {
 140     QMenu menu;
 141     assert( treeView );
 142
 143     /* We do not offer the option to hide index 0 column, or
 144     * QTreeView will behave weird */
 145     int i, j;
 146     for( i = 1 << 1, j = 1; i < COLUMN_END; i <<= 1, j++ )
 147     {
 148         QAction* option = menu.addAction( qfu( psz_column_title( i ) ) );
 149         option->setCheckable( true );
 150         option->setChecked( !treeView->isColumnHidden( j ) );
 151         selectColumnsSigMapper->setMapping( option, j );
 152         CONNECT( option, triggered(), selectColumnsSigMapper, map() );
 153     }
 154     menu.exec( QCursor::pos() );
 155 }
 156
 157 void StandardPLPanel::toggleColumnShown( int i )
 158 {
 159     treeView->setColumnHidden( i, !treeView->isColumnHidden( i ) );
 160 }
 161
 162 /* Search in the playlist */
 163 void StandardPLPanel::search( const QString& searchText )
 164 {
 165     int type;
 166     QString name;
 167     p_selector->getCurrentSelectedItem( &type, &name );
 168     if( type != SD_TYPE )
 169     {
 170         bool flat = currentView == iconView || currentView == listView || currentView == picFlowView;
 171         model->search( searchText,
 172                        flat ? currentView->rootIndex() : QModelIndex(),
 173                        !flat );
 174     }
 175 }
 176
 177 void StandardPLPanel::searchDelayed( const QString& searchText )
 178 {
 179     int type;
 180     QString name;
 181     p_selector->getCurrentSelectedItem( &type, &name );
 182
 183     if( type == SD_TYPE )
 184     {
 185         if( !name.isEmpty() && !searchText.isEmpty() )
 186             playlist_ServicesDiscoveryControl( THEPL, qtu( name ), SD_CMD_SEARCH, qtu( searchText ) );
 187     }
 188 }
 189
 190 /* Set the root of the new Playlist */
 191 /* This activated by the selector selection */
 192 void StandardPLPanel::setRoot( playlist_item_t *p_item, bool b )
 193 {
 194     if( b ) //SQLML
 195         return;
 196
 197     model->rebuild( p_item );
 198 }
 199
 200 void StandardPLPanel::browseInto( const QModelIndex &index )
 201 {
 202     if( currentView == iconView || currentView == listView || currentView == picFlowView )
 203     {
 204         currentRootIndexId = model->itemId( index );
 205         currentView->setRootIndex( index );
 206     }
 207
 208     emit viewChanged( index );
 209 }
 210
 211 void StandardPLPanel::browseInto( )
 212 {
 213     browseInto( currentRootIndexId != -1 && currentView != treeView ?
 214                 model->index( currentRootIndexId, 0 ) :
 215                 QModelIndex() );
 216 }
 217
 218 void StandardPLPanel::wheelEvent( QWheelEvent *e )
 219 {
 220     // Accept this event in order to prevent unwanted volume up/down changes
 221     e->accept();
 222 }
 223
 224 bool StandardPLPanel::eventFilter ( QObject * watched, QEvent * event )
 225 {
 226     if (event->type() == QEvent::KeyPress)
 227     {
 228         QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);
 229         if( keyEvent->key() == Qt::Key_Delete ||
 230             keyEvent->key() == Qt::Key_Backspace )
 231         {
 232             deleteSelection();
 233             return true;
 234         }
 235     }
 236     return false;
 237 }
 238
 239 void StandardPLPanel::deleteSelection()
 240 {
 241     QItemSelectionModel *selection = currentView->selectionModel();
 242     QModelIndexList list = selection->selectedIndexes();
 243     model->doDelete( list );
 244 }
 245
 246 void StandardPLPanel::createIconView()
 247 {
 248     iconView = new PlIconView( model, this );
 249     iconView->setContextMenuPolicy( Qt::CustomContextMenu );
 250     CONNECT( iconView, customContextMenuRequested( const QPoint & ),
 251              this, popupPlView( const QPoint & ) );
 252     CONNECT( iconView, activated( const QModelIndex & ),
 253              this, activate( const QModelIndex & ) );
 254     iconView->installEventFilter( this );
 255     viewStack->addWidget( iconView );
 256 }
 257
 258 void StandardPLPanel::createListView()
 259 {
 260     listView = new PlListView( model, this );
 261     listView->setContextMenuPolicy( Qt::CustomContextMenu );
 262     CONNECT( listView, customContextMenuRequested( const QPoint & ),
 263              this, popupPlView( const QPoint & ) );
 264     CONNECT( listView, activated( const QModelIndex & ),
 265              this, activate( const QModelIndex & ) );
 266     listView->installEventFilter( this );
 267     viewStack->addWidget( listView );
 268 }
 269
 270 void StandardPLPanel::createCoverView()
 271 {
 272     picFlowView = new PicFlowView( model, this );
 273     picFlowView->setContextMenuPolicy( Qt::CustomContextMenu );
 274     CONNECT( picFlowView, customContextMenuRequested( const QPoint & ),
 275              this, popupPlView( const QPoint & ) );
 276     CONNECT( picFlowView, activated( const QModelIndex & ),
 277              this, activate( const QModelIndex & ) );
 278     viewStack->addWidget( picFlowView );
 279     picFlowView->installEventFilter( this );
 280 }
 281
 282 void StandardPLPanel::createTreeView()
 283 {
 284     /* Create and configure the QTreeView */
 285     treeView = new PlTreeView;
 286
 287     treeView->setIconSize( QSize( 20, 20 ) );
 288     treeView->setAlternatingRowColors( true );
 289     treeView->setAnimated( true );
 290     treeView->setUniformRowHeights( true );
 291     treeView->setSortingEnabled( true );
 292     treeView->setAttribute( Qt::WA_MacShowFocusRect, false );
 293     treeView->header()->setSortIndicator( -1 , Qt::AscendingOrder );
 294     treeView->header()->setSortIndicatorShown( true );
 295     treeView->header()->setClickable( true );
 296     treeView->header()->setContextMenuPolicy( Qt::CustomContextMenu );
 297
 298     treeView->setSelectionBehavior( QAbstractItemView::SelectRows );
 299     treeView->setSelectionMode( QAbstractItemView::ExtendedSelection );
 300     treeView->setDragEnabled( true );
 301     treeView->setAcceptDrops( true );
 302     treeView->setDropIndicatorShown( true );
 303     treeView->setContextMenuPolicy( Qt::CustomContextMenu );
 304
 305     /* setModel after setSortingEnabled(true), or the model will sort immediately! */
 306     treeView->setModel( model );
 307
 308     getSettings()->beginGroup("Playlist");
 309
 310     if( getSettings()->contains( "headerStateV2" ) )
 311     {
 312         treeView->header()->restoreState(
 313                 getSettings()->value( "headerStateV2" ).toByteArray() );
 314     }
 315     else
 316     {
 317         for( int m = 1, c = 0; m != COLUMN_END; m <<= 1, c++ )
 318         {
 319             treeView->setColumnHidden( c, !( m & COLUMN_DEFAULT ) );
 320             if( m == COLUMN_TITLE ) treeView->header()->resizeSection( c, 200 );
 321             else if( m == COLUMN_DURATION ) treeView->header()->resizeSection( c, 80 );
 322         }
 323     }
 324
 325     getSettings()->endGroup();
 326
 327     /* Connections for the TreeView */
 328     CONNECT( treeView, activated( const QModelIndex& ),
 329              this, activate( const QModelIndex& ) );
 330     CONNECT( treeView->header(), customContextMenuRequested( const QPoint & ),
 331              this, popupSelectColumn( QPoint ) );
 332     CONNECT( treeView, customContextMenuRequested( const QPoint & ),
 333              this, popupPlView( const QPoint & ) );
 334     treeView->installEventFilter( this );
 335
 336     /* SignalMapper for columns */
 337     selectColumnsSigMapper = new QSignalMapper( this );
 338     CONNECT( selectColumnsSigMapper, mapped( int ),
 339              this, toggleColumnShown( int ) );
 340
 341     viewStack->addWidget( treeView );
 342 }
 343
 344 void StandardPLPanel::showView( int i_view )
 345 {
 346     switch( i_view )
 347     {
 348     case TREE_VIEW:
 349     {
 350         if( treeView == NULL )
 351             createTreeView();
 352         currentView = treeView;
 353         break;
 354     }
 355     case ICON_VIEW:
 356     {
 357         if( iconView == NULL )
 358             createIconView();
 359         currentView = iconView;
 360         break;
 361     }
 362     case LIST_VIEW:
 363     {
 364         if( listView == NULL )
 365             createListView();
 366         currentView = listView;
 367         break;
 368     }
 369     case PICTUREFLOW_VIEW:
 370     {
 371         if( picFlowView == NULL )
 372             createCoverView();
 373         currentView = picFlowView;
 374         break;
 375     }
 376     default: return;
 377     }
 378
 379     viewStack->setCurrentWidget( currentView );
 380     browseInto();
 381     gotoPlayingItem();
 382 }
 383
 384 const int StandardPLPanel::currentViewIndex()
 385 {
 386     if( currentView == treeView )
 387         return TREE_VIEW;
 388     else if( currentView == iconView )
 389         return ICON_VIEW;
 390     else if( currentView == listView )
 391         return LIST_VIEW;
 392     else
 393         return PICTUREFLOW_VIEW;
 394 }
 395
 396 void StandardPLPanel::cycleViews()
 397 {
 398     if( currentView == iconView )
 399         showView( TREE_VIEW );
 400     else if( currentView == treeView )
 401         showView( LIST_VIEW );
 402     else if( currentView == listView )
 403         showView( PICTUREFLOW_VIEW  );
 404     else if( currentView == picFlowView )
 405         showView( ICON_VIEW );
 406     else
 407         assert( 0 );
 408 }
 409
 410 void StandardPLPanel::activate( const QModelIndex &index )
 411 {
 412     /* If we are not a leaf node */
 413     if( !index.data( PLModel::IsLeafNodeRole ).toBool() )
 414     {
 415         if( currentView != treeView )
 416             browseInto( index );
 417     }
 418     else
 419     {
 420         playlist_Lock( THEPL );
 421         playlist_item_t *p_item = playlist_ItemGetById( THEPL, model->itemId( index ) );
 422         p_item->i_flags |= PLAYLIST_SUBITEM_STOP_FLAG;
 423         lastActivatedId = p_item->p_input->i_id;
 424         playlist_Unlock( THEPL );
 425         model->activateItem( index );
 426     }
 427 }
 428
 429 void StandardPLPanel::browseInto( input_item_t *p_input )
 430 {
 431     if( p_input->i_id != lastActivatedId ) return;
 432
 433     playlist_Lock( THEPL );
 434
 435     playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input );
 436     if( !p_item )
 437     {
 438         playlist_Unlock( THEPL );
 439         return;
 440     }
 441
 442     QModelIndex index = model->index( p_item->i_id, 0 );
 443     playlist_Unlock( THEPL );
 444
 445     if( currentView == treeView )
 446         treeView->setExpanded( index, true );
 447     else
 448         browseInto( index );
 449
 450     lastActivatedId = -1;
 451 }