modules/gui/qt4/components/playlist/standardpanel.cpp

   1 /*****************************************************************************
   2  * standardpanel.cpp : The "standard" playlist panel : just a treeview
   3  ****************************************************************************
   4  * Copyright (C) 2000-2009 VideoLAN
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          JB 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 "dialogs_provider.hpp"
  30
  31 #include "components/playlist/playlist_model.hpp"
  32 #include "components/playlist/standardpanel.hpp"
  33 #include "components/playlist/icon_view.hpp"
  34 #include "util/customwidgets.hpp"
  35
  36 #include <vlc_intf_strings.h>
  37
  38 #include <QPushButton>
  39 #include <QHeaderView>
  40 #include <QKeyEvent>
  41 #include <QModelIndexList>
  42 #include <QLabel>
  43 #include <QMenu>
  44 #include <QSignalMapper>
  45 #include <QWheelEvent>
  46 #include <QToolButton>
  47 #include <QFontMetrics>
  48
  49 #include <assert.h>
  50
  51 #include "sorting.h"
  52
  53 StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
  54                                   intf_thread_t *_p_intf,
  55                                   playlist_t *p_playlist,
  56                                   playlist_item_t *p_root ):
  57                                   QWidget( _parent ), p_intf( _p_intf )
  58 {
  59     layout = new QGridLayout( this );
  60     layout->setSpacing( 0 ); layout->setMargin( 0 );
  61     setMinimumWidth( 300 );
  62
  63     model = new PLModel( p_playlist, p_intf, p_root, this );
  64     CONNECT( model, currentChanged( const QModelIndex& ),
  65              this, handleExpansion( const QModelIndex& ) );
  66
  67     iconView = NULL;
  68     treeView = NULL;
  69
  70     currentRootId = -1;
  71
  72     /* Title label */
  73     /*title = new QLabel;
  74     QFont titleFont;
  75     titleFont.setPointSize( titleFont.pointSize() + 6 );
  76     titleFont.setFamily( "Verdana" );
  77     title->setFont( titleFont );
  78     layout->addWidget( title, 0, 0 );*/
  79
  80     locationBar = new LocationBar( model );
  81     layout->addWidget( locationBar, 0, 0 );
  82
  83     /* A Spacer and the search possibilities */
  84     layout->setColumnStretch( 1, 10 );
  85
  86     SearchLineEdit *search = new SearchLineEdit( this );
  87     search->setMaximumWidth( 300 );
  88     layout->addWidget( search, 0, 4 );
  89     CONNECT( search, textChanged( const QString& ),
  90              this, search( const QString& ) );
  91     layout->setColumnStretch( 4, 2 );
  92
  93     /* Add item to the playlist button */
  94     addButton = new QPushButton;
  95     addButton->setIcon( QIcon( ":/buttons/playlist/playlist_add" ) );
  96     addButton->setMaximumWidth( 30 );
  97     BUTTONACT( addButton, popupAdd() );
  98     layout->addWidget( addButton, 0, 3 );
  99
 100     /* Button to switch views */
 101     QPushButton *viewButton = new QPushButton( this );
 102     viewButton->setIcon( style()->standardIcon( QStyle::SP_FileDialogContentsView ) );
 103     layout->addWidget( viewButton, 0, 2 );
 104
 105     /* View selection menu */
 106     viewSelectionMapper = new QSignalMapper;
 107     CONNECT( viewSelectionMapper, mapped( int ), this, showView( int ) );
 108
 109     QActionGroup *actionGroup = new QActionGroup( this );
 110
 111     QAction *action = actionGroup->addAction( "Detailed view" );
 112     action->setCheckable( true );
 113     viewSelectionMapper->setMapping( action, TREE_VIEW );
 114     CONNECT( action, triggered(), viewSelectionMapper, map() );
 115
 116     action = actionGroup->addAction( "Icon view" );
 117     action->setCheckable( true );
 118     viewSelectionMapper->setMapping( action, ICON_VIEW );
 119     CONNECT( action, triggered(), viewSelectionMapper, map() );
 120
 121     QMenu *viewMenu = new QMenu( this );
 122     viewMenu->addActions( actionGroup->actions() );
 123
 124     viewButton->setMenu( viewMenu );
 125
 126     /* Saved Settings */
 127     getSettings()->beginGroup("Playlist");
 128
 129     int i_viewMode = getSettings()->value( "view-mode", TREE_VIEW ).toInt();
 130     showView( i_viewMode );
 131
 132     getSettings()->endGroup();
 133
 134     last_activated_id = -1;
 135     CONNECT( THEMIM, inputChanged( input_thread_t * ),
 136              this, handleInputChange( input_thread_t * ) );
 137 }
 138
 139 StandardPLPanel::~StandardPLPanel()
 140 {
 141     getSettings()->beginGroup("Playlist");
 142     if( treeView )
 143         getSettings()->setValue( "headerStateV2", treeView->header()->saveState() );
 144     getSettings()->setValue( "view-mode", ( currentView == iconView ) ? ICON_VIEW : TREE_VIEW );
 145     getSettings()->endGroup();
 146 }
 147
 148 /* Unused anymore, but might be useful, like in right-click menu */
 149 void StandardPLPanel::gotoPlayingItem()
 150 {
 151     currentView->scrollTo( model->currentIndex() );
 152 }
 153
 154 void StandardPLPanel::handleExpansion( const QModelIndex& index )
 155 {
 156     assert( currentView );
 157     currentView->scrollTo( index );
 158 }
 159
 160 /* PopupAdd Menu for the Add Menu */
 161 void StandardPLPanel::popupAdd()
 162 {
 163     QMenu popup;
 164     if( currentRootId == THEPL->p_local_category->i_id ||
 165         currentRootId == THEPL->p_local_onelevel->i_id )
 166     {
 167         popup.addAction( qtr(I_PL_ADDF), THEDP, SLOT( simplePLAppendDialog()) );
 168         popup.addAction( qtr(I_PL_ADDDIR), THEDP, SLOT( PLAppendDir()) );
 169         popup.addAction( qtr(I_OP_ADVOP), THEDP, SLOT( PLAppendDialog()) );
 170     }
 171     else if( ( THEPL->p_ml_category &&
 172                 currentRootId == THEPL->p_ml_category->i_id ) ||
 173              ( THEPL->p_ml_onelevel &&
 174                 currentRootId == THEPL->p_ml_onelevel->i_id ) )
 175     {
 176         popup.addAction( qtr(I_PL_ADDF), THEDP, SLOT( simpleMLAppendDialog()) );
 177         popup.addAction( qtr(I_PL_ADDDIR), THEDP, SLOT( MLAppendDir() ) );
 178         popup.addAction( qtr(I_OP_ADVOP), THEDP, SLOT( MLAppendDialog() ) );
 179     }
 180
 181     popup.exec( QCursor::pos() - addButton->mapFromGlobal( QCursor::pos() )
 182                         + QPoint( 0, addButton->height() ) );
 183 }
 184
 185 void StandardPLPanel::popupPlView( const QPoint &point )
 186 {
 187     QModelIndex index = currentView->indexAt( point );
 188     QPoint globalPoint = currentView->viewport()->mapToGlobal( point );
 189     QItemSelectionModel *selection = currentView->selectionModel();
 190     QModelIndexList list = selection->selectedIndexes();
 191     model->popup( index, globalPoint, list );
 192 }
 193
 194 void StandardPLPanel::popupSelectColumn( QPoint pos )
 195 {
 196     QMenu menu;
 197     assert( treeView );
 198
 199     /* We do not offer the option to hide index 0 column, or
 200     * QTreeView will behave weird */
 201     int i, j;
 202     for( i = 1 << 1, j = 1; i < COLUMN_END; i <<= 1, j++ )
 203     {
 204         QAction* option = menu.addAction(
 205             qfu( psz_column_title( i ) ) );
 206         option->setCheckable( true );
 207         option->setChecked( !treeView->isColumnHidden( j ) );
 208         selectColumnsSigMapper->setMapping( option, j );
 209         CONNECT( option, triggered(), selectColumnsSigMapper, map() );
 210     }
 211     menu.exec( QCursor::pos() );
 212 }
 213
 214 void StandardPLPanel::toggleColumnShown( int i )
 215 {
 216     treeView->setColumnHidden( i, !treeView->isColumnHidden( i ) );
 217 }
 218
 219 /* Search in the playlist */
 220 void StandardPLPanel::search( const QString& searchText )
 221 {
 222     model->search( searchText );
 223 }
 224
 225 /* Set the root of the new Playlist */
 226 /* This activated by the selector selection */
 227 void StandardPLPanel::setRoot( playlist_item_t *p_item )
 228 {
 229     QPL_LOCK;
 230     assert( p_item );
 231
 232     playlist_item_t *p_pref_item = playlist_GetPreferredNode( THEPL, p_item );
 233     if( p_pref_item ) p_item = p_pref_item;
 234
 235     /* needed for popupAdd() */
 236     currentRootId = p_item->i_id;
 237
 238     /* cosmetics, ..still need playlist locking.. */
 239     /*char *psz_title = input_item_GetName( p_item->p_input );
 240     title->setText( qfu(psz_title) );
 241     free( psz_title );*/
 242
 243     QPL_UNLOCK;
 244
 245     /* do THE job */
 246     model->rebuild( p_item );
 247
 248     locationBar->setIndex( QModelIndex() );
 249
 250     /* enable/disable adding */
 251     if( p_item == THEPL->p_local_category ||
 252         p_item == THEPL->p_local_onelevel )
 253     {
 254         addButton->setEnabled( true );
 255         addButton->setToolTip( qtr(I_PL_ADDPL) );
 256     }
 257     else if( ( THEPL->p_ml_category && p_item == THEPL->p_ml_category) ||
 258               ( THEPL->p_ml_onelevel && p_item == THEPL->p_ml_onelevel ) )
 259     {
 260         addButton->setEnabled( true );
 261         addButton->setToolTip( qtr(I_PL_ADDML) );
 262     }
 263     else
 264         addButton->setEnabled( false );
 265 }
 266
 267 void StandardPLPanel::removeItem( int i_id )
 268 {
 269     model->removeItem( i_id );
 270 }
 271
 272 /* Delete and Suppr key remove the selection
 273    FilterKey function and code function */
 274 void StandardPLPanel::keyPressEvent( QKeyEvent *e )
 275 {
 276     switch( e->key() )
 277     {
 278     case Qt::Key_Back:
 279     case Qt::Key_Delete:
 280         deleteSelection();
 281         break;
 282     }
 283 }
 284
 285 void StandardPLPanel::deleteSelection()
 286 {
 287     QItemSelectionModel *selection = currentView->selectionModel();
 288     QModelIndexList list = selection->selectedIndexes();
 289     model->doDelete( list );
 290 }
 291
 292 void StandardPLPanel::createIconView()
 293 {
 294     iconView = new PlIconView( model, this );
 295     iconView->setContextMenuPolicy( Qt::CustomContextMenu );
 296     CONNECT( iconView, customContextMenuRequested( const QPoint & ),
 297              this, popupPlView( const QPoint & ) );
 298     CONNECT( iconView, activated( const QModelIndex & ),
 299              this, activate( const QModelIndex & ) );
 300     CONNECT( locationBar, invoked( const QModelIndex & ),
 301              iconView, setRootIndex( const QModelIndex & ) );
 302
 303     layout->addWidget( iconView, 1, 0, 1, -1 );
 304 }
 305
 306 void StandardPLPanel::createTreeView()
 307 {
 308     /* Create and configure the QTreeView */
 309     treeView = new QTreeView;
 310
 311     treeView->setIconSize( QSize( 20, 20 ) );
 312     treeView->setAlternatingRowColors( true );
 313     treeView->setAnimated( true );
 314     treeView->setUniformRowHeights( true );
 315     treeView->setSortingEnabled( true );
 316     treeView->header()->setSortIndicator( -1 , Qt::AscendingOrder );
 317     treeView->header()->setSortIndicatorShown( true );
 318     treeView->header()->setClickable( true );
 319     treeView->header()->setContextMenuPolicy( Qt::CustomContextMenu );
 320
 321     treeView->setSelectionBehavior( QAbstractItemView::SelectRows );
 322     treeView->setSelectionMode( QAbstractItemView::ExtendedSelection );
 323     treeView->setDragEnabled( true );
 324     treeView->setAcceptDrops( true );
 325     treeView->setDropIndicatorShown( true );
 326     treeView->setContextMenuPolicy( Qt::CustomContextMenu );
 327
 328     /* setModel after setSortingEnabled(true), or the model will sort immediately! */
 329     treeView->setModel( model );
 330
 331     if( getSettings()->contains( "headerStateV2" ) )
 332     {
 333         treeView->header()->restoreState(
 334                 getSettings()->value( "headerStateV2" ).toByteArray() );
 335     }
 336     else
 337     {
 338         for( int m = 1, c = 0; m != COLUMN_END; m <<= 1, c++ )
 339         {
 340             treeView->setColumnHidden( c, !( m & COLUMN_DEFAULT ) );
 341             if( m == COLUMN_TITLE ) treeView->header()->resizeSection( c, 200 );
 342             else if( m == COLUMN_DURATION ) treeView->header()->resizeSection( c, 80 );
 343         }
 344     }
 345
 346     /* Connections for the TreeView */
 347     CONNECT( treeView, activated( const QModelIndex& ),
 348              this, activate( const QModelIndex& ) );
 349     CONNECT( treeView->header(), customContextMenuRequested( const QPoint & ),
 350              this, popupSelectColumn( QPoint ) );
 351     CONNECT( treeView, customContextMenuRequested( const QPoint & ),
 352              this, popupPlView( const QPoint & ) );
 353
 354     /* SignalMapper for columns */
 355     selectColumnsSigMapper = new QSignalMapper( this );
 356     CONNECT( selectColumnsSigMapper, mapped( int ),
 357              this, toggleColumnShown( int ) );
 358
 359     /* Finish the layout */
 360     layout->addWidget( treeView, 1, 0, 1, -1 );
 361 }
 362
 363 void StandardPLPanel::showView( int i_view )
 364 {
 365     switch( i_view )
 366     {
 367     case TREE_VIEW:
 368     {
 369         if( treeView == NULL )
 370             createTreeView();
 371         locationBar->setIndex( treeView->rootIndex() );
 372         if( iconView ) iconView->hide();
 373         treeView->show();
 374         currentView = treeView;
 375         break;
 376     }
 377     case ICON_VIEW:
 378     {
 379         if( iconView == NULL )
 380             createIconView();
 381
 382         locationBar->setIndex( iconView->rootIndex() );
 383         if( treeView ) treeView->hide();
 384         iconView->show();
 385         currentView = iconView;
 386         break;
 387     }
 388     default:;
 389     }
 390 }
 391
 392 void StandardPLPanel::wheelEvent( QWheelEvent *e )
 393 {
 394     // Accept this event in order to prevent unwanted volume up/down changes
 395     e->accept();
 396 }
 397
 398 void StandardPLPanel::activate( const QModelIndex &index )
 399 {
 400     last_activated_id = model->itemId( index );
 401     if( model->hasChildren( index ) )
 402     {
 403         if( currentView == iconView ) {
 404             iconView->setRootIndex( index );
 405             //title->setText( index.data().toString() );
 406             locationBar->setIndex( index );
 407         }
 408     }
 409     else
 410     {
 411         model->activateItem( index );
 412     }
 413 }
 414
 415 void StandardPLPanel::handleInputChange( input_thread_t *p_input_thread )
 416 {
 417     if( currentView != iconView ) return;
 418
 419     input_item_t *p_input_item = input_GetItem( p_input_thread );
 420     if( !p_input_item ) return;
 421
 422     playlist_Lock( THEPL );
 423
 424     playlist_item_t *p_item = playlist_ItemGetByInput( THEPL, p_input_item );
 425
 426     if( p_item  && p_item->p_parent &&
 427         p_item->p_parent->i_id == last_activated_id )
 428     {
 429         QModelIndex index = model->index( p_item->p_parent->i_id, 0 );
 430         iconView->setRootIndex( index );
 431         //title->setText( index.data().toString() );
 432         locationBar->setIndex( index );
 433         last_activated_id = p_item->i_id;
 434     }
 435
 436     playlist_Unlock( THEPL );
 437 }
 438
 439 LocationBar::LocationBar( PLModel *m )
 440 {
 441   model = m;
 442   mapper = new QSignalMapper;
 443   CONNECT( mapper, mapped( int ), this, invoke( int ) );
 444 }
 445
 446 void LocationBar::setIndex( const QModelIndex &index )
 447 {
 448   clear();
 449   QAction *prev = NULL;
 450   QModelIndex i = index;
 451   QFont font;
 452   QFontMetrics metrics( font );
 453   font.setBold( true );
 454   while( true )
 455   {
 456       PLItem *item = model->getItem( i );
 457
 458       QToolButton *btn = new QToolButton;
 459       char *fb_name = input_item_GetTitleFbName( item->inputItem() );
 460       QString text = qfu(fb_name);
 461       free(fb_name);
 462       text = QString("/ ") + metrics.elidedText( text, Qt::ElideRight, 150 );
 463       btn->setText( text );
 464       btn->setFont( font );
 465       prev = insertWidget( prev, btn );
 466
 467       mapper->setMapping( btn, item->id() );
 468       CONNECT( btn, clicked( ), mapper, map( ) );
 469
 470       font = QFont();
 471
 472       if( i.isValid() ) i = i.parent();
 473       else break;
 474   }
 475 }
 476
 477 void LocationBar::invoke( int i_id )
 478 {
 479   QModelIndex index = model->index( i_id, 0 );
 480   setIndex( index );
 481   emit invoked ( index );
 482 }