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

   1 /*****************************************************************************
   2  * playlist.cpp : Custom widgets for the playlist
   3  ****************************************************************************
   4  * Copyright © 2007-2010 the VideoLAN team
   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/playlist.hpp"
  30 #include "components/playlist/standardpanel.hpp"  /* MainView */
  31 #include "components/playlist/selector.hpp"       /* PLSelector */
  32 #include "components/playlist/playlist_model.hpp" /* PLModel */
  33 #include "components/playlist/ml_model.hpp"       /* MLModel */
  34 #include "components/interface_widgets.hpp"       /* CoverArtLabel */
  35
  36 #include "util/searchlineedit.hpp"
  37
  38 #include "input_manager.hpp"                      /* art signal */
  39 #include "main_interface.hpp"                     /* DropEvent TODO remove this*/
  40
  41 #include <QMenu>
  42 #include <QSignalMapper>
  43 #include <QSlider>
  44 #include <QStackedWidget>
  45
  46 /**********************************************************************
  47  * Playlist Widget. The embedded playlist
  48  **********************************************************************/
  49
  50 PlaylistWidget::PlaylistWidget( intf_thread_t *_p_i, QWidget *_par )
  51                : QWidget( _par ), p_intf ( _p_i )
  52 {
  53
  54     setContentsMargins( 0, 3, 0, 3 );
  55
  56     QGridLayout *layout = new QGridLayout( this );
  57     layout->setMargin( 0 ); layout->setSpacing( 0 );
  58
  59     /*******************
  60      * Left            *
  61      *******************/
  62     /* We use a QSplitter for the left part */
  63     leftSplitter = new QSplitter( Qt::Vertical, this );
  64
  65     /* Source Selector */
  66     selector = new PLSelector( this, p_intf );
  67     leftSplitter->addWidget( selector );
  68
  69     /* Create a Container for the Art Label
  70        in order to have a beautiful resizing for the selector above it */
  71     artContainer = new QStackedWidget;
  72     artContainer->setMaximumHeight( 128 );
  73
  74     /* Art label */
  75     CoverArtLabel *art = new CoverArtLabel( artContainer, p_intf );
  76     art->setToolTip( qtr( "Double click to get media information" ) );
  77     artContainer->addWidget( art );
  78
  79     CONNECT( THEMIM->getIM(), artChanged( QString ),
  80              art, showArtUpdate( const QString& ) );
  81
  82     leftSplitter->addWidget( artContainer );
  83
  84     /*******************
  85      * Right           *
  86      *******************/
  87     /* Initialisation of the playlist */
  88     playlist_t * p_playlist = THEPL;
  89     PL_LOCK;
  90     playlist_item_t *p_root = p_playlist->p_playing;
  91     PL_UNLOCK;
  92
  93     setMinimumWidth( 400 );
  94
  95     PLModel *model = PLModel::getPLModel( p_intf );
  96 #ifdef MEDIA_LIBRARY
  97     MLModel *mlmodel = new MLModel( p_intf, this );
  98     mainView = new StandardPLPanel( this, p_intf, p_root, selector, model, mlmodel );
  99 #else
 100     mainView = new StandardPLPanel( this, p_intf, p_root, selector, model, NULL );
 101 #endif
 102
 103     /* Location Bar */
 104     locationBar = new LocationBar( model );
 105     locationBar->setSizePolicy( QSizePolicy::Ignored, QSizePolicy::Preferred );
 106     layout->addWidget( locationBar, 0, 0, 1, 2 );
 107     layout->setColumnStretch( 0, 5 );
 108     CONNECT( locationBar, invoked( const QModelIndex & ),
 109              mainView, browseInto( const QModelIndex & ) );
 110
 111     QHBoxLayout *topbarLayout = new QHBoxLayout();
 112     layout->addLayout( topbarLayout, 0, 1 );
 113     topbarLayout->setSpacing( 10 );
 114
 115     /* Button to clear playlist */
 116     QToolButton *clearPlaylistButton = new QToolButton( this );
 117     clearPlaylistButton->setIcon( style()->standardIcon( QStyle::SP_TrashIcon ) );
 118     clearPlaylistButton->setToolTip( qtr("Clear playlist") );
 119     topbarLayout->addWidget( clearPlaylistButton );
 120     CONNECT( clearPlaylistButton, clicked(), this, clearPlaylist() );
 121
 122     /* Button to switch views */
 123     QToolButton *viewButton = new QToolButton( this );
 124     viewButton->setIcon( style()->standardIcon( QStyle::SP_FileDialogDetailedView ) );
 125     viewButton->setToolTip( qtr("Change playlistview") );
 126     topbarLayout->addWidget( viewButton );
 127
 128     /* View selection menu */
 129     QSignalMapper *viewSelectionMapper = new QSignalMapper( this );
 130     CONNECT( viewSelectionMapper, mapped( int ), mainView, showView( int ) );
 131
 132     QActionGroup *actionGroup = new QActionGroup( this );
 133
 134 #ifndef NDEBUG
 135 # define MAX_VIEW StandardPLPanel::VIEW_COUNT
 136 #else
 137 # define MAX_VIEW StandardPLPanel::VIEW_COUNT - 1
 138 #endif
 139     for( int i = 0; i < MAX_VIEW; i++ )
 140     {
 141         viewActions[i] = actionGroup->addAction( viewNames[i] );
 142         viewActions[i]->setCheckable( true );
 143         viewSelectionMapper->setMapping( viewActions[i], i );
 144         CONNECT( viewActions[i], triggered(), viewSelectionMapper, map() );
 145     }
 146     viewActions[0]->setChecked( true );
 147
 148     QMenu *viewMenu = new QMenu( viewButton );
 149     viewMenu->addActions( actionGroup->actions() );
 150     viewButton->setMenu( viewMenu );
 151     CONNECT( viewButton, clicked(), mainView, cycleViews() );
 152
 153     /* Search */
 154     searchEdit = new SearchLineEdit( this );
 155     searchEdit->setMaximumWidth( 250 );
 156     searchEdit->setMinimumWidth( 80 );
 157     searchEdit->setToolTip( qtr("Search the playlist") );
 158     topbarLayout->addWidget( searchEdit );
 159     CONNECT( searchEdit, textChanged( const QString& ),
 160              mainView, search( const QString& ) );
 161     CONNECT( searchEdit, searchDelayedChanged( const QString& ),
 162              mainView, searchDelayed( const QString & ) );
 163
 164     CONNECT( mainView, viewChanged( const QModelIndex& ),
 165              this, changeView( const QModelIndex &) );
 166
 167     /* Connect the activation of the selector to a redefining of the PL */
 168     DCONNECT( selector, categoryActivated( playlist_item_t *, bool ),
 169               mainView, setRootItem( playlist_item_t *, bool ) );
 170     mainView->setRootItem( p_root, false );
 171
 172     /* */
 173     split = new PlaylistSplitter( this );
 174
 175     /* Add the two sides of the QSplitter */
 176     split->addWidget( leftSplitter );
 177     split->addWidget( mainView );
 178
 179     QList<int> sizeList;
 180     sizeList << 180 << 420 ;
 181     split->setSizes( sizeList );
 182     split->setStretchFactor( 0, 0 );
 183     split->setStretchFactor( 1, 3 );
 184     split->setCollapsible( 1, false );
 185     leftSplitter->setMaximumWidth( 250 );
 186
 187     /* In case we want to keep the splitter information */
 188     // components shall never write there setting to a fixed location, may infer
 189     // with other uses of the same component...
 190     getSettings()->beginGroup("Playlist");
 191     split->restoreState( getSettings()->value("splitterSizes").toByteArray());
 192     leftSplitter->restoreState( getSettings()->value("leftSplitterGeometry").toByteArray() );
 193     getSettings()->endGroup();
 194
 195     layout->addWidget( split, 1, 0, 1, -1 );
 196
 197     setAcceptDrops( true );
 198     setWindowTitle( qtr( "Playlist" ) );
 199     setWindowRole( "vlc-playlist" );
 200     setWindowIcon( QApplication::windowIcon() );
 201 }
 202
 203 PlaylistWidget::~PlaylistWidget()
 204 {
 205     getSettings()->beginGroup("Playlist");
 206     getSettings()->setValue( "splitterSizes", split->saveState() );
 207     getSettings()->setValue( "leftSplitterGeometry", leftSplitter->saveState() );
 208     getSettings()->endGroup();
 209     msg_Dbg( p_intf, "Playlist Destroyed" );
 210 }
 211
 212 void PlaylistWidget::dropEvent( QDropEvent *event )
 213 {
 214     if( !( selector->getCurrentItemCategory() == IS_PL ||
 215            selector->getCurrentItemCategory() == IS_ML ) ) return;
 216
 217     if( p_intf->p_sys->p_mi )
 218         p_intf->p_sys->p_mi->dropEventPlay( event, false,
 219                 (selector->getCurrentItemCategory() == IS_PL) );
 220 }
 221 void PlaylistWidget::dragEnterEvent( QDragEnterEvent *event )
 222 {
 223     event->acceptProposedAction();
 224 }
 225
 226 void PlaylistWidget::closeEvent( QCloseEvent *event )
 227 {
 228     if( THEDP->isDying() )
 229     {
 230         p_intf->p_sys->p_mi->playlistVisible = true;
 231         event->accept();
 232     }
 233     else
 234     {
 235         p_intf->p_sys->p_mi->playlistVisible = false;
 236         hide();
 237         event->ignore();
 238     }
 239 }
 240
 241 void PlaylistWidget::forceHide()
 242 {
 243     leftSplitter->hide();
 244     mainView->hide();
 245     updateGeometry();
 246 }
 247
 248 void PlaylistWidget::forceShow()
 249 {
 250     leftSplitter->show();
 251     mainView->show();
 252     updateGeometry();
 253 }
 254
 255 void PlaylistWidget::changeView( const QModelIndex& index )
 256 {
 257     searchEdit->clear();
 258     locationBar->setIndex( index );
 259     int i = mainView->currentViewIndex();
 260     viewActions[i]->setChecked(true);
 261 }
 262
 263 void PlaylistWidget::clearPlaylist()
 264 {
 265     PLModel *model = PLModel::getPLModel( p_intf );
 266     if( model->rowCount() < 1 ) return;
 267
 268     QModelIndexList* l = new QModelIndexList();
 269     for( int i = 0; i < model->rowCount(); i++)
 270     {
 271         QModelIndex indexrecord = model->index( i, 0, QModelIndex() );
 272         l->append( indexrecord );
 273     }
 274     model->doDelete(*l);
 275 }
 276 #include <QSignalMapper>
 277 #include <QMenu>
 278 #include <QPainter>
 279 LocationBar::LocationBar( PLModel *m )
 280 {
 281     model = m;
 282     mapper = new QSignalMapper( this );
 283     CONNECT( mapper, mapped( int ), this, invoke( int ) );
 284
 285     btnMore = new LocationButton( "...", false, true, this );
 286     menuMore = new QMenu( this );
 287     btnMore->setMenu( menuMore );
 288 }
 289
 290 void LocationBar::setIndex( const QModelIndex &index )
 291 {
 292     qDeleteAll( buttons );
 293     buttons.clear();
 294     qDeleteAll( actions );
 295     actions.clear();
 296
 297     QModelIndex i = index;
 298     bool first = true;
 299
 300     while( true )
 301     {
 302         PLItem *item = model->getItem( i );
 303         QString text;
 304
 305         char *fb_name = input_item_GetTitle( item->inputItem() );
 306         if( EMPTY_STR( fb_name ) )
 307         {
 308             free( fb_name );
 309             fb_name = input_item_GetName( item->inputItem() );
 310         }
 311         text = qfu(fb_name);
 312         free(fb_name);
 313
 314         QAbstractButton *btn = new LocationButton( text, first, !first, this );
 315         btn->setSizePolicy( QSizePolicy::Maximum, QSizePolicy::Fixed );
 316         buttons.append( btn );
 317
 318         QAction *action = new QAction( text, this );
 319         actions.append( action );
 320         CONNECT( btn, clicked(), action, trigger() );
 321
 322         mapper->setMapping( action, item->id() );
 323         CONNECT( action, triggered(), mapper, map() );
 324
 325         first = false;
 326
 327         if( i.isValid() ) i = i.parent();
 328         else break;
 329     }
 330
 331     QString prefix;
 332     for( int a = actions.count() - 1; a >= 0 ; a-- )
 333     {
 334         actions[a]->setText( prefix + actions[a]->text() );
 335         prefix += QString("  ");
 336     }
 337
 338     if( isVisible() ) layOut( size() );
 339 }
 340
 341 void LocationBar::setRootIndex()
 342 {
 343     setIndex( QModelIndex() );
 344 }
 345
 346 void LocationBar::invoke( int i_id )
 347 {
 348     QModelIndex index = model->index( i_id, 0 );
 349     emit invoked ( index );
 350 }
 351
 352 void LocationBar::layOut( const QSize& size )
 353 {
 354     menuMore->clear();
 355     widths.clear();
 356
 357     int count = buttons.count();
 358     int totalWidth = 0;
 359     for( int i = 0; i < count; i++ )
 360     {
 361         int w = buttons[i]->sizeHint().width();
 362         widths.append( w );
 363         totalWidth += w;
 364         if( totalWidth > size.width() ) break;
 365     }
 366
 367     int x = 0;
 368     int shown = widths.count();
 369
 370     if( totalWidth > size.width() && count > 1 )
 371     {
 372         QSize sz = btnMore->sizeHint();
 373         btnMore->setGeometry( 0, 0, sz.width(), size.height() );
 374         btnMore->show();
 375         x = sz.width();
 376         totalWidth += x;
 377     }
 378     else
 379     {
 380         btnMore->hide();
 381     }
 382     for( int i = count - 1; i >= 0; i-- )
 383     {
 384         if( totalWidth <= size.width() || i == 0)
 385         {
 386             buttons[i]->setGeometry( x, 0, qMin( size.width() - x, widths[i] ), size.height() );
 387             buttons[i]->show();
 388             x += widths[i];
 389             totalWidth -= widths[i];
 390         }
 391         else
 392         {
 393             menuMore->addAction( actions[i] );
 394             buttons[i]->hide();
 395             if( i < shown ) totalWidth -= widths[i];
 396         }
 397     }
 398 }
 399
 400 void LocationBar::resizeEvent ( QResizeEvent * event )
 401 {
 402     layOut( event->size() );
 403 }
 404
 405 QSize LocationBar::sizeHint() const
 406 {
 407     return btnMore->sizeHint();
 408 }
 409
 410 LocationButton::LocationButton( const QString &text, bool bold,
 411                                 bool arrow, QWidget * parent )
 412   : QPushButton( parent ), b_arrow( arrow )
 413 {
 414     QFont font;
 415     font.setBold( bold );
 416     setFont( font );
 417     setText( text );
 418 }
 419
 420 #define PADDING 4
 421
 422 void LocationButton::paintEvent ( QPaintEvent * )
 423 {
 424     QStyleOptionButton option;
 425     option.initFrom( this );
 426     option.state |= QStyle::State_Enabled;
 427     QPainter p( this );
 428
 429     if( underMouse() )
 430     {
 431         p.save();
 432         p.setRenderHint( QPainter::Antialiasing, true );
 433         QColor c = palette().color( QPalette::Highlight );
 434         p.setPen( c );
 435         p.setBrush( c.lighter( 150 ) );
 436         p.setOpacity( 0.2 );
 437         p.drawRoundedRect( option.rect.adjusted( 0, 2, 0, -2 ), 5, 5 );
 438         p.restore();
 439     }
 440
 441     QRect r = option.rect.adjusted( PADDING, 0, -PADDING - (b_arrow ? 10 : 0), 0 );
 442
 443     QString str( text() );
 444     /* This check is absurd, but either it is not done properly inside elidedText(),
 445        or boundingRect() is wrong */
 446     if( r.width() < fontMetrics().boundingRect( text() ).width() )
 447         str = fontMetrics().elidedText( text(), Qt::ElideRight, r.width() );
 448     p.drawText( r, Qt::AlignVCenter | Qt::AlignLeft, str );
 449
 450     if( b_arrow )
 451     {
 452         option.rect.setWidth( 10 );
 453         option.rect.moveRight( rect().right() );
 454         style()->drawPrimitive( QStyle::PE_IndicatorArrowRight, &option, &p );
 455     }
 456 }
 457
 458 QSize LocationButton::sizeHint() const
 459 {
 460     QSize s( fontMetrics().boundingRect( text() ).size() );
 461     /* Add two pixels to width: font metrics are buggy, if you pass text through elidation
 462        with exactly the width of its bounding rect, sometimes it still elides */
 463     s.setWidth( s.width() + ( 2 * PADDING ) + ( b_arrow ? 10 : 0 ) + 2 );
 464     s.setHeight( s.height() + 2 * PADDING );
 465     return s;
 466 }
 467
 468 #undef PADDING
 469
 470 #ifdef Q_WS_MAC
 471 QSplitterHandle *PlaylistSplitter::createHandle()
 472 {
 473     return new SplitterHandle( orientation(), this );
 474 }
 475
 476 SplitterHandle::SplitterHandle( Qt::Orientation orientation, QSplitter * parent )
 477                : QSplitterHandle( orientation, parent)
 478 {
 479 };
 480
 481 QSize SplitterHandle::sizeHint() const
 482 {
 483     return (orientation() == Qt::Horizontal) ? QSize( 1, height() ) : QSize( width(), 1 );
 484 }
 485
 486 void SplitterHandle::paintEvent(QPaintEvent *event)
 487 {
 488     QPainter painter( this );
 489     painter.fillRect( event->rect(), QColor(81, 81, 81) );
 490 }
 491 #endif /* __APPLE__ */