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