modules/gui/qt4/components/interface_widgets.cpp

   1 /*****************************************************************************
   2  * interface_widgets.cpp : Custom widgets for the main interface
   3  ****************************************************************************
   4  * Copyright (C) 2006-2010 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Clément Stenac <zorglub@videolan.org>
   8  *          Jean-Baptiste Kempf <jb@videolan.org>
   9  *          Rafaël Carré <funman@videolanorg>
  10  *          Ilkka Ollakka <ileoo@videolan.org>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * ( at your option ) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  25  *****************************************************************************/
  26
  27 #ifdef HAVE_CONFIG_H
  28 # include "config.h"
  29 #endif
  30
  31 #include "qt4.hpp"
  32 #include "components/interface_widgets.hpp"
  33 #include "dialogs_provider.hpp"
  34 #include "util/customwidgets.hpp"               // qtEventToVLCKey, QVLCStackedWidget
  35
  36 #include "menus.hpp"             /* Popup menu on bgWidget */
  37
  38 #include <vlc_vout.h>
  39
  40 #include <QLabel>
  41 #include <QToolButton>
  42 #include <QPalette>
  43 #include <QEvent>
  44 #include <QResizeEvent>
  45 #include <QDate>
  46 #include <QMenu>
  47 #include <QWidgetAction>
  48 #include <QDesktopWidget>
  49 #include <QPainter>
  50 #include <QTimer>
  51 #include <QSlider>
  52 #include <QBitmap>
  53
  54 #ifdef Q_WS_X11
  55 #   include <X11/Xlib.h>
  56 #   include <qx11info_x11.h>
  57 #endif
  58
  59 #include <math.h>
  60 #include <assert.h>
  61
  62 /**********************************************************************
  63  * Video Widget. A simple frame on which video is drawn
  64  * This class handles resize issues
  65  **********************************************************************/
  66
  67 VideoWidget::VideoWidget( intf_thread_t *_p_i )
  68             : QFrame( NULL ) , p_intf( _p_i )
  69 {
  70     /* Set the policy to expand in both directions */
  71     // setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
  72
  73     layout = new QHBoxLayout( this );
  74     layout->setContentsMargins( 0, 0, 0, 0 );
  75     stable = NULL;
  76     show();
  77 }
  78
  79 VideoWidget::~VideoWidget()
  80 {
  81     /* Ensure we are not leaking the video output. This would crash. */
  82     assert( !stable );
  83 }
  84
  85 void VideoWidget::sync( void )
  86 {
  87 #ifdef Q_WS_X11
  88     /* Make sure the X server has processed all requests.
  89      * This protects other threads using distinct connections from getting
  90      * the video widget window in an inconsistent states. */
  91     XSync( QX11Info::display(), False );
  92 #endif
  93 }
  94
  95 /**
  96  * Request the video to avoid the conflicts
  97  **/
  98 WId VideoWidget::request( int *pi_x, int *pi_y,
  99                           unsigned int *pi_width, unsigned int *pi_height,
 100                           bool b_keep_size )
 101 {
 102     msg_Dbg( p_intf, "Video was requested %i, %i", *pi_x, *pi_y );
 103
 104     if( stable )
 105     {
 106         msg_Dbg( p_intf, "embedded video already in use" );
 107         return 0;
 108     }
 109     if( b_keep_size )
 110     {
 111         *pi_width  = size().width();
 112         *pi_height = size().height();
 113     }
 114
 115     /* The owner of the video window needs a stable handle (WinId). Reparenting
 116      * in Qt4-X11 changes the WinId of the widget, so we need to create another
 117      * dummy widget that stays within the reparentable widget. */
 118     stable = new QWidget();
 119     QPalette plt = palette();
 120     plt.setColor( QPalette::Window, Qt::black );
 121     stable->setPalette( plt );
 122     stable->setAutoFillBackground(true);
 123     /* Indicates that the widget wants to draw directly onto the screen.
 124        Widgets with this attribute set do not participate in composition
 125        management */
 126     /* This is currently disabled on X11 as it does not seem to improve
 127      * performance, but causes the video widget to be transparent... */
 128 #ifndef Q_WS_X11
 129     stable->setAttribute( Qt::WA_PaintOnScreen, true );
 130 #endif
 131
 132     layout->addWidget( stable );
 133
 134 #ifdef Q_WS_X11
 135     /* HACK: Only one X11 client can subscribe to mouse button press events.
 136      * VLC currently handles those in the video display.
 137      * Force Qt4 to unsubscribe from mouse press and release events. */
 138     Display *dpy = QX11Info::display();
 139     Window w = stable->winId();
 140     XWindowAttributes attr;
 141
 142     XGetWindowAttributes( dpy, w, &attr );
 143     attr.your_event_mask &= ~(ButtonPressMask|ButtonReleaseMask);
 144     XSelectInput( dpy, w, attr.your_event_mask );
 145 #endif
 146     sync();
 147     return stable->winId();
 148 }
 149
 150 /* Set the Widget to the correct Size */
 151 /* Function has to be called by the parent
 152    Parent has to care about resizing itself */
 153 void VideoWidget::SetSizing( unsigned int w, unsigned int h )
 154 {
 155     resize( w, h );
 156     emit sizeChanged( w, h );
 157     /* Work-around a bug?misconception? that would happen when vout core resize
 158        twice to the same size and would make the vout not centered.
 159        This cause a small flicker.
 160        See #3621
 161      */
 162     if( (unsigned)size().width() == w && (unsigned)size().height() == h )
 163         updateGeometry();
 164     sync();
 165 }
 166
 167 void VideoWidget::release( void )
 168 {
 169     msg_Dbg( p_intf, "Video is not needed anymore" );
 170
 171     if( stable )
 172     {
 173         layout->removeWidget( stable );
 174         stable->deleteLater();
 175         stable = NULL;
 176     }
 177
 178     updateGeometry();
 179 }
 180
 181 /**********************************************************************
 182  * Background Widget. Show a simple image background. Currently,
 183  * it's album art if present or cone.
 184  **********************************************************************/
 185
 186 BackgroundWidget::BackgroundWidget( intf_thread_t *_p_i )
 187     :QWidget( NULL ), p_intf( _p_i ), b_expandPixmap( false ), b_withart( true )
 188 {
 189     /* A dark background */
 190     setAutoFillBackground( true );
 191     QPalette plt = palette();
 192     plt.setColor( QPalette::Active, QPalette::Window , Qt::black );
 193     plt.setColor( QPalette::Inactive, QPalette::Window , Qt::black );
 194     setPalette( plt );
 195
 196     /* Init the cone art */
 197     updateArt( "" );
 198
 199     CONNECT( THEMIM->getIM(), artChanged( QString ),
 200              this, updateArt( const QString& ) );
 201 }
 202
 203 void BackgroundWidget::updateArt( const QString& url )
 204 {
 205     if ( !url.isEmpty() )
 206     {
 207         pixmapUrl = url;
 208     }
 209     else
 210     {   /* Xmas joke */
 211         if( QDate::currentDate().dayOfYear() >= QT_XMAS_JOKE_DAY && var_InheritBool( p_intf, "qt-icon-change" ) )
 212             pixmapUrl = QString( ":/logo/vlc128-xmas.png" );
 213         else
 214             pixmapUrl = QString( ":/logo/vlc128.png" );
 215     }
 216     update();
 217 }
 218
 219 void BackgroundWidget::paintEvent( QPaintEvent *e )
 220 {
 221     if ( !b_withart )
 222     {
 223         /* we just want background autofill */
 224         QWidget::paintEvent( e );
 225         return;
 226     }
 227
 228     int i_maxwidth, i_maxheight;
 229     QPixmap pixmap = QPixmap( pixmapUrl );
 230     QPainter painter(this);
 231     QBitmap pMask;
 232     float f_alpha = 1.0;
 233
 234     i_maxwidth  = __MIN( maximumWidth(), width() ) - MARGIN * 2;
 235     i_maxheight = __MIN( maximumHeight(), height() ) - MARGIN * 2;
 236
 237     if ( height() > MARGIN * 2 )
 238     {
 239         /* Scale down the pixmap if the widget is too small */
 240         if( pixmap.width() > i_maxwidth || pixmap.height() > i_maxheight )
 241         {
 242             pixmap = pixmap.scaled( i_maxwidth, i_maxheight,
 243                             Qt::KeepAspectRatio, Qt::SmoothTransformation );
 244         }
 245         else
 246         if ( b_expandPixmap &&
 247              pixmap.width() < width() && pixmap.height() < height() )
 248         {
 249             /* Scale up the pixmap to fill widget's size */
 250             f_alpha = ( (float) pixmap.height() / (float) height() );
 251             pixmap = pixmap.scaled(
 252                     width() - MARGIN * 2,
 253                     height() - MARGIN * 2,
 254                     Qt::KeepAspectRatio,
 255                     ( f_alpha < .2 )? /* Don't waste cpu when not visible */
 256                         Qt::SmoothTransformation:
 257                         Qt::FastTransformation
 258                     );
 259             /* Non agressive alpha compositing when sizing up */
 260             pMask = QBitmap( pixmap.width(), pixmap.height() );
 261             pMask.fill( QColor::fromRgbF( 1.0, 1.0, 1.0, f_alpha ) );
 262             pixmap.setMask( pMask );
 263         }
 264
 265         painter.drawPixmap(
 266                 MARGIN + ( i_maxwidth - pixmap.width() ) /2,
 267                 MARGIN + ( i_maxheight - pixmap.height() ) /2,
 268                 pixmap);
 269     }
 270     QWidget::paintEvent( e );
 271 }
 272
 273 void BackgroundWidget::contextMenuEvent( QContextMenuEvent *event )
 274 {
 275     VLCMenuBar::PopupMenu( p_intf, true );
 276     event->accept();
 277 }
 278
 279 #if 0
 280 #include <QPushButton>
 281 #include <QHBoxLayout>
 282
 283 /**********************************************************************
 284  * Visualization selector panel
 285  **********************************************************************/
 286 VisualSelector::VisualSelector( intf_thread_t *_p_i ) :
 287                                 QFrame( NULL ), p_intf( _p_i )
 288 {
 289     QHBoxLayout *layout = new QHBoxLayout( this );
 290     layout->setMargin( 0 );
 291     QPushButton *prevButton = new QPushButton( "Prev" );
 292     QPushButton *nextButton = new QPushButton( "Next" );
 293     layout->addWidget( prevButton );
 294     layout->addWidget( nextButton );
 295
 296     layout->addStretch( 10 );
 297     layout->addWidget( new QLabel( qtr( "Current visualization" ) ) );
 298
 299     current = new QLabel( qtr( "None" ) );
 300     layout->addWidget( current );
 301
 302     BUTTONACT( prevButton, prev() );
 303     BUTTONACT( nextButton, next() );
 304
 305     setLayout( layout );
 306     setMaximumHeight( 35 );
 307 }
 308
 309 VisualSelector::~VisualSelector()
 310 {}
 311
 312 void VisualSelector::prev()
 313 {
 314     char *psz_new = aout_VisualPrev( p_intf );
 315     if( psz_new )
 316     {
 317         current->setText( qfu( psz_new ) );
 318         free( psz_new );
 319     }
 320 }
 321
 322 void VisualSelector::next()
 323 {
 324     char *psz_new = aout_VisualNext( p_intf );
 325     if( psz_new )
 326     {
 327         current->setText( qfu( psz_new ) );
 328         free( psz_new );
 329     }
 330 }
 331 #endif
 332
 333 SpeedLabel::SpeedLabel( intf_thread_t *_p_intf, QWidget *parent )
 334            : QLabel( parent ), p_intf( _p_intf )
 335 {
 336     tooltipStringPattern = qtr( "Current playback speed: %1\nClick to adjust" );
 337
 338     /* Create the Speed Control Widget */
 339     speedControl = new SpeedControlWidget( p_intf, this );
 340     speedControlMenu = new QMenu( this );
 341
 342     QWidgetAction *widgetAction = new QWidgetAction( speedControl );
 343     widgetAction->setDefaultWidget( speedControl );
 344     speedControlMenu->addAction( widgetAction );
 345
 346     /* Change the SpeedRate in the Label */
 347     CONNECT( THEMIM->getIM(), rateChanged( float ), this, setRate( float ) );
 348
 349     DCONNECT( THEMIM, inputChanged( input_thread_t * ),
 350               speedControl, activateOnState() );
 351
 352     setFrameStyle( QFrame::StyledPanel | QFrame::Raised );
 353     setLineWidth( 1 );
 354
 355     setRate( var_InheritFloat( THEPL, "rate" ) );
 356 }
 357
 358 SpeedLabel::~SpeedLabel()
 359 {
 360     delete speedControl;
 361     delete speedControlMenu;
 362 }
 363
 364 /****************************************************************************
 365  * Small right-click menu for rate control
 366  ****************************************************************************/
 367
 368 void SpeedLabel::showSpeedMenu( QPoint pos )
 369 {
 370     speedControlMenu->exec( QCursor::pos() - pos
 371                             + QPoint( -70 + width()/2, height() ) );
 372 }
 373
 374 void SpeedLabel::setRate( float rate )
 375 {
 376     QString str;
 377     str.setNum( rate, 'f', 2 );
 378     str.append( "x" );
 379     setText( str );
 380     setToolTip( tooltipStringPattern.arg( str ) );
 381     speedControl->updateControls( rate );
 382 }
 383
 384 /**********************************************************************
 385  * Speed control widget
 386  **********************************************************************/
 387 SpeedControlWidget::SpeedControlWidget( intf_thread_t *_p_i, QWidget *_parent )
 388                     : QFrame( _parent ), p_intf( _p_i )
 389 {
 390     QSizePolicy sizePolicy( QSizePolicy::Fixed, QSizePolicy::Maximum );
 391     sizePolicy.setHorizontalStretch( 0 );
 392     sizePolicy.setVerticalStretch( 0 );
 393
 394     speedSlider = new QSlider( this );
 395     speedSlider->setSizePolicy( sizePolicy );
 396     speedSlider->setMinimumSize( QSize( 140, 20 ) );
 397     speedSlider->setOrientation( Qt::Horizontal );
 398     speedSlider->setTickPosition( QSlider::TicksBelow );
 399
 400     speedSlider->setRange( -34, 34 );
 401     speedSlider->setSingleStep( 1 );
 402     speedSlider->setPageStep( 1 );
 403     speedSlider->setTickInterval( 17 );
 404
 405     CONNECT( speedSlider, valueChanged( int ), this, updateRate( int ) );
 406
 407     QToolButton *normalSpeedButton = new QToolButton( this );
 408     normalSpeedButton->setMaximumSize( QSize( 26, 16 ) );
 409     normalSpeedButton->setAutoRaise( true );
 410     normalSpeedButton->setText( "1x" );
 411     normalSpeedButton->setToolTip( qtr( "Revert to normal play speed" ) );
 412
 413     CONNECT( normalSpeedButton, clicked(), this, resetRate() );
 414
 415     QToolButton *slowerButton = new QToolButton( this );
 416     slowerButton->setMaximumSize( QSize( 26, 16 ) );
 417     slowerButton->setAutoRaise( true );
 418     slowerButton->setToolTip( tooltipL[SLOWER_BUTTON] );
 419     slowerButton->setIcon( QIcon( iconL[SLOWER_BUTTON] ) );
 420     CONNECT( slowerButton, clicked(), THEMIM->getIM(), slower() );
 421
 422     QToolButton *fasterButton = new QToolButton( this );
 423     fasterButton->setMaximumSize( QSize( 26, 16 ) );
 424     fasterButton->setAutoRaise( true );
 425     fasterButton->setToolTip( tooltipL[FASTER_BUTTON] );
 426     fasterButton->setIcon( QIcon( iconL[FASTER_BUTTON] ) );
 427     CONNECT( fasterButton, clicked(), THEMIM->getIM(), faster() );
 428
 429 /*    spinBox = new QDoubleSpinBox();
 430     spinBox->setDecimals( 2 );
 431     spinBox->setMaximum( 32 );
 432     spinBox->setMinimum( 0.03F );
 433     spinBox->setSingleStep( 0.10F );
 434     spinBox->setAlignment( Qt::AlignRight );
 435
 436     CONNECT( spinBox, valueChanged( double ), this, updateSpinBoxRate( double ) ); */
 437
 438     QGridLayout* speedControlLayout = new QGridLayout( this );
 439     speedControlLayout->addWidget( speedSlider, 0, 0, 1, 3 );
 440     speedControlLayout->addWidget( slowerButton, 1, 0 );
 441     speedControlLayout->addWidget( normalSpeedButton, 1, 1, 1, 1, Qt::AlignRight );
 442     speedControlLayout->addWidget( fasterButton, 1, 2, 1, 1, Qt::AlignRight );
 443     //speedControlLayout->addWidget( spinBox );
 444     speedControlLayout->setContentsMargins( 0, 0, 0, 0 );
 445     speedControlLayout->setSpacing( 0 );
 446
 447     lastValue = 0;
 448
 449     activateOnState();
 450 }
 451
 452 void SpeedControlWidget::activateOnState()
 453 {
 454     speedSlider->setEnabled( THEMIM->getIM()->hasInput() );
 455     //spinBox->setEnabled( THEMIM->getIM()->hasInput() );
 456 }
 457
 458 void SpeedControlWidget::updateControls( float rate )
 459 {
 460     if( speedSlider->isSliderDown() )
 461     {
 462         //We don't want to change anything if the user is using the slider
 463         return;
 464     }
 465
 466     double value = 17 * log( rate ) / log( 2. );
 467     int sliderValue = (int) ( ( value > 0 ) ? value + .5 : value - .5 );
 468
 469     if( sliderValue < speedSlider->minimum() )
 470     {
 471         sliderValue = speedSlider->minimum();
 472     }
 473     else if( sliderValue > speedSlider->maximum() )
 474     {
 475         sliderValue = speedSlider->maximum();
 476     }
 477     lastValue = sliderValue;
 478
 479     speedSlider->setValue( sliderValue );
 480     //spinBox->setValue( rate );
 481 }
 482
 483 void SpeedControlWidget::updateRate( int sliderValue )
 484 {
 485     if( sliderValue == lastValue )
 486         return;
 487
 488     double speed = pow( 2, (double)sliderValue / 17 );
 489     int rate = INPUT_RATE_DEFAULT / speed;
 490
 491     THEMIM->getIM()->setRate(rate);
 492     //spinBox->setValue( var_InheritFloat( THEPL, "rate" ) );
 493 }
 494
 495 void SpeedControlWidget::updateSpinBoxRate( double r )
 496 {
 497     var_SetFloat( THEPL, "rate", r );
 498 }
 499
 500 void SpeedControlWidget::resetRate()
 501 {
 502     THEMIM->getIM()->setRate( INPUT_RATE_DEFAULT );
 503 }
 504
 505 CoverArtLabel::CoverArtLabel( QWidget *parent, intf_thread_t *_p_i )
 506               : QLabel( parent ), p_intf( _p_i )
 507 {
 508     setContextMenuPolicy( Qt::ActionsContextMenu );
 509     CONNECT( this, updateRequested(), this, askForUpdate() );
 510
 511     setMinimumHeight( 128 );
 512     setMinimumWidth( 128 );
 513     setMaximumHeight( 128 );
 514     setScaledContents( false );
 515     setAlignment( Qt::AlignCenter );
 516
 517     QList< QAction* > artActions = actions();
 518     QAction *action = new QAction( qtr( "Download cover art" ), this );
 519     CONNECT( action, triggered(), this, askForUpdate() );
 520     addAction( action );
 521
 522     showArtUpdate( "" );
 523 }
 524
 525 CoverArtLabel::~CoverArtLabel()
 526 {
 527     QList< QAction* > artActions = actions();
 528     foreach( QAction *act, artActions )
 529         removeAction( act );
 530 }
 531
 532 void CoverArtLabel::showArtUpdate( const QString& url )
 533 {
 534     QPixmap pix;
 535     if( !url.isEmpty() && pix.load( url ) )
 536     {
 537         pix = pix.scaled( minimumWidth(), maximumHeight(),
 538                           Qt::KeepAspectRatioByExpanding,
 539                           Qt::SmoothTransformation );
 540     }
 541     else
 542     {
 543         pix = QPixmap( ":/noart.png" );
 544     }
 545     setPixmap( pix );
 546 }
 547
 548 void CoverArtLabel::askForUpdate()
 549 {
 550     THEMIM->getIM()->requestArtUpdate();
 551 }
 552
 553 TimeLabel::TimeLabel( intf_thread_t *_p_intf, TimeLabel::Display _displayType  )
 554     : ClickableQLabel(), p_intf( _p_intf ), bufTimer( new QTimer(this) ),
 555       buffering( false ), showBuffering(false), bufVal( -1 ), displayType( _displayType )
 556 {
 557     b_remainingTime = false;
 558     if( _displayType != TimeLabel::Elapsed )
 559         b_remainingTime = getSettings()->value( "MainWindow/ShowRemainingTime", false ).toBool();
 560     switch( _displayType ) {
 561         case TimeLabel::Elapsed:
 562             setText( " --:-- " );
 563             setToolTip( qtr("Elapsed time") );
 564             break;
 565         case TimeLabel::Remaining:
 566             setText( " --:-- " );
 567             setToolTip( qtr("Total/Remaining time")
 568                         + QString("\n-")
 569                         + qtr("Click to toggle between total and remaining time")
 570                       );
 571             break;
 572         case TimeLabel::Both:
 573             setText( " --:--/--:-- " );
 574             setToolTip( QString( "- " )
 575                 + qtr( "Click to toggle between elapsed and remaining time" )
 576                 + QString( "\n- " )
 577                 + qtr( "Double click to jump to a chosen time position" ) );
 578             break;
 579     }
 580     setAlignment( Qt::AlignRight | Qt::AlignVCenter );
 581
 582     bufTimer->setSingleShot( true );
 583
 584     CONNECT( THEMIM->getIM(), positionUpdated( float, int64_t, int ),
 585               this, setDisplayPosition( float, int64_t, int ) );
 586     CONNECT( THEMIM->getIM(), cachingChanged( float ),
 587               this, updateBuffering( float ) );
 588     CONNECT( bufTimer, timeout(), this, updateBuffering() );
 589
 590     setStyleSheet( "padding-left: 4px; padding-right: 4px;" );
 591 }
 592
 593 void TimeLabel::setDisplayPosition( float pos, int64_t t, int length )
 594 {
 595     showBuffering = false;
 596     bufTimer->stop();
 597
 598     if( pos == -1.f )
 599     {
 600         setMinimumSize( QSize( 0, 0 ) );
 601         if( displayType == TimeLabel::Both )
 602             setText( "--:--/--:--" );
 603         else
 604             setText( "--:--" );
 605         return;
 606     }
 607
 608     int time = t / 1000000;
 609
 610     secstotimestr( psz_length, length );
 611     secstotimestr( psz_time, ( b_remainingTime && length ) ? length - time
 612                                                            : time );
 613
 614     // compute the minimum size that will be required for the psz_length
 615     // and use it to enforce a minimal size to avoid "dancing" widgets
 616     QSize minsize( 0, 0 );
 617     if ( length > 0 )
 618     {
 619         QMargins margins = contentsMargins();
 620         minsize += QSize(
 621                   fontMetrics().size( 0, QString( psz_length ), 0, 0 ).width(),
 622                   sizeHint().height()
 623                 );
 624         minsize += QSize( margins.left() + margins.right() + 8, 0 ); /* +padding */
 625
 626         if ( b_remainingTime )
 627             minsize += QSize( fontMetrics().size( 0, "-", 0, 0 ).width(), 0 );
 628     }
 629
 630     switch( displayType )
 631     {
 632         case TimeLabel::Elapsed:
 633             setMinimumSize( minsize );
 634             setText( QString( psz_time ) );
 635             break;
 636         case TimeLabel::Remaining:
 637             if( b_remainingTime )
 638             {
 639                 setMinimumSize( minsize );
 640                 setText( QString("-") + QString( psz_time ) );
 641             }
 642             else
 643             {
 644                 setMinimumSize( QSize( 0, 0 ) );
 645                 setText( QString( psz_length ) );
 646             }
 647             break;
 648         case TimeLabel::Both:
 649         default:
 650             QString timestr = QString( "%1%2/%3" )
 651             .arg( QString( (b_remainingTime && length) ? "-" : "" ) )
 652             .arg( QString( psz_time ) )
 653             .arg( QString( ( !length && time ) ? "--:--" : psz_length ) );
 654
 655             setText( timestr );
 656             break;
 657     }
 658     cachedLength = length;
 659 }
 660
 661 void TimeLabel::setDisplayPosition( float pos )
 662 {
 663     if( pos == -1.f || cachedLength == 0 )
 664     {
 665         setText( " --:--/--:-- " );
 666         return;
 667     }
 668
 669     int time = pos * cachedLength;
 670     secstotimestr( psz_time,
 671                    ( b_remainingTime && cachedLength ?
 672                    cachedLength - time : time ) );
 673     QString timestr = QString( "%1%2/%3" )
 674         .arg( QString( (b_remainingTime && cachedLength) ? "-" : "" ) )
 675         .arg( QString( psz_time ) )
 676         .arg( QString( ( !cachedLength && time ) ? "--:--" : psz_length ) );
 677
 678     setText( timestr );
 679 }
 680
 681
 682 void TimeLabel::toggleTimeDisplay()
 683 {
 684     b_remainingTime = !b_remainingTime;
 685     getSettings()->setValue( "MainWindow/ShowRemainingTime", b_remainingTime );
 686 }
 687
 688
 689 void TimeLabel::updateBuffering( float _buffered )
 690 {
 691     bufVal = _buffered;
 692     if( !buffering || bufVal == 0 )
 693     {
 694         showBuffering = false;
 695         buffering = true;
 696         bufTimer->start(200);
 697     }
 698     else if( bufVal == 1 )
 699     {
 700         showBuffering = buffering = false;
 701         bufTimer->stop();
 702     }
 703     update();
 704 }
 705
 706 void TimeLabel::updateBuffering()
 707 {
 708     showBuffering = true;
 709     update();
 710 }
 711
 712 void TimeLabel::paintEvent( QPaintEvent* event )
 713 {
 714     if( showBuffering )
 715     {
 716         QRect r( rect() );
 717         r.setLeft( r.width() * bufVal );
 718         QPainter p( this );
 719         p.setOpacity( 0.4 );
 720         p.fillRect( r, palette().color( QPalette::Highlight ) );
 721     }
 722     QLabel::paintEvent( event );
 723 }