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