modules/gui/qt4/components/interface_widgets.cpp

   1 /*****************************************************************************
   2  * interface_widgets.cpp : Custom widgets for the main interface
   3  ****************************************************************************
   4  * Copyright (C) 2006-2008 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 "components/interface_widgets.hpp"
  32
  33 #include "menus.hpp"             /* Popup menu on bgWidget */
  34
  35 #include <vlc_vout.h>
  36
  37 #include <QLabel>
  38 #include <QToolButton>
  39 #include <QPalette>
  40 #include <QResizeEvent>
  41 #include <QDate>
  42 #include <QMenu>
  43 #include <QWidgetAction>
  44 #include <QDesktopWidget>
  45
  46 #ifdef Q_WS_X11
  47 # include <X11/Xlib.h>
  48 # include <qx11info_x11.h>
  49 static void videoSync( void )
  50 {
  51     /* Make sure the X server has processed all requests.
  52      * This protects other threads using distinct connections from getting
  53      * the video widget window in an inconsistent states. */
  54     XSync( QX11Info::display(), False );
  55 }
  56 #else
  57 # define videoSync() (void)0
  58 #endif
  59
  60 #include <math.h>
  61
  62 class ReparentableWidget : public QWidget
  63 {
  64 private:
  65     VideoWidget *owner;
  66 public:
  67     ReparentableWidget( VideoWidget *owner ) : owner( owner )
  68     {
  69     }
  70
  71 protected:
  72     void keyPressEvent( QKeyEvent *e )
  73     {
  74         emit owner->keyPressed( e );
  75     }
  76 };
  77
  78 /**********************************************************************
  79  * Video Widget. A simple frame on which video is drawn
  80  * This class handles resize issues
  81  **********************************************************************/
  82
  83 VideoWidget::VideoWidget( intf_thread_t *_p_i )
  84     : QFrame( NULL )
  85       , p_intf( _p_i )
  86       , reparentable( NULL )
  87 {
  88     /* Set the policy to expand in both directions */
  89 //    setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
  90
  91     layout = new QHBoxLayout( this );
  92     layout->setContentsMargins( 0, 0, 0, 0 );
  93     setLayout( layout );
  94 }
  95
  96 VideoWidget::~VideoWidget()
  97 {
  98     /* Ensure we are not leaking the video output. This would crash. */
  99     assert( reparentable == NULL );
 100 }
 101
 102 /**
 103  * Request the video to avoid the conflicts
 104  **/
 105 WId VideoWidget::request( int *pi_x, int *pi_y,
 106                           unsigned int *pi_width, unsigned int *pi_height,
 107                           bool b_keep_size )
 108 {
 109     msg_Dbg( p_intf, "Video was requested %i, %i", *pi_x, *pi_y );
 110
 111     if( reparentable != NULL )
 112     {
 113         msg_Dbg( p_intf, "embedded video already in use" );
 114         return NULL;
 115     }
 116     if( b_keep_size )
 117     {
 118         *pi_width  = size().width();
 119         *pi_height = size().height();
 120     }
 121
 122     /* The Qt4 UI needs a fixed a widget ("this"), so that the parent layout is
 123      * not messed up when we the video is reparented. Hence, we create an extra
 124      * reparentable widget, that will be within the VideoWidget in windowed
 125      * mode, and within the root window (NULL parent) in full-screen mode.
 126      */
 127     reparentable = new ReparentableWidget( this );
 128     QLayout *innerLayout = new QHBoxLayout( reparentable );
 129     innerLayout->setContentsMargins( 0, 0, 0, 0 );
 130
 131     /* The owner of the video window needs a stable handle (WinId). Reparenting
 132      * in Qt4-X11 changes the WinId of the widget, so we need to create another
 133      * dummy widget that stays within the reparentable widget. */
 134     QWidget *stable = new QWidget();
 135     QPalette plt = palette();
 136     plt.setColor( QPalette::Window, Qt::black );
 137     stable->setPalette( plt );
 138     stable->setAutoFillBackground(true);
 139     /* Indicates that the widget wants to draw directly onto the screen.
 140        Widgets with this attribute set do not participate in composition
 141        management */
 142     stable->setAttribute( Qt::WA_PaintOnScreen, true );
 143
 144     innerLayout->addWidget( stable );
 145
 146     layout->addWidget( reparentable );
 147
 148 #ifdef Q_WS_X11
 149     /* HACK: Only one X11 client can subscribe to mouse button press events.
 150      * VLC currently handles those in the video display.
 151      * Force Qt4 to unsubscribe from mouse press and release events. */
 152     Display *dpy = QX11Info::display();
 153     Window w = stable->winId();
 154     XWindowAttributes attr;
 155
 156     XGetWindowAttributes( dpy, w, &attr );
 157     attr.your_event_mask &= ~(ButtonPressMask|ButtonReleaseMask);
 158     XSelectInput( dpy, w, attr.your_event_mask );
 159 #endif
 160     videoSync();
 161 #ifndef NDEBUG
 162     msg_Dbg( p_intf, "embedded video ready (handle %p)",
 163              (void *)stable->winId() );
 164 #endif
 165     return stable->winId();
 166 }
 167
 168 /* Set the Widget to the correct Size */
 169 /* Function has to be called by the parent
 170    Parent has to care about resizing itself */
 171 void VideoWidget::SetSizing( unsigned int w, unsigned int h )
 172 {
 173     if (reparentable->windowState() & Qt::WindowFullScreen )
 174         return;
 175     msg_Dbg( p_intf, "Video is resizing to: %i %i", w, h );
 176     videoSize.setWidth( w );
 177     videoSize.setHeight( h );
 178     if( !isVisible() ) show();
 179     updateGeometry(); // Needed for deinterlace
 180     videoSync();
 181 }
 182
 183 void VideoWidget::SetFullScreen( bool b_fs )
 184 {
 185     const Qt::WindowStates curstate = reparentable->windowState();
 186     Qt::WindowStates newstate = curstate;
 187     Qt::WindowFlags  newflags = reparentable->windowFlags();
 188
 189
 190     if( b_fs )
 191     {
 192         newstate |= Qt::WindowFullScreen;
 193         newflags |= Qt::WindowStaysOnTopHint;
 194     }
 195     else
 196     {
 197         newstate &= ~Qt::WindowFullScreen;
 198         newflags &= ~Qt::WindowStaysOnTopHint;
 199     }
 200     if( newstate == curstate )
 201         return; /* no changes needed */
 202
 203     if( b_fs )
 204     {   /* Go full-screen */
 205         int numscreen = var_InheritInteger( p_intf, "qt-fullscreen-screennumber" );
 206         /* if user hasn't defined screennumber, or screennumber that is bigger
 207          * than current number of screens, take screennumber where current interface
 208          * is
 209          */
 210         if( numscreen == -1 || numscreen > QApplication::desktop()->numScreens() )
 211             numscreen = QApplication::desktop()->screenNumber( p_intf->p_sys->p_mi );
 212
 213         QRect screenres = QApplication::desktop()->screenGeometry( numscreen );
 214
 215         reparentable->setParent( NULL, newflags );
 216         reparentable->setWindowState( newstate );
 217         /* To be sure window is on proper-screen in xinerama */
 218         if( !screenres.contains( reparentable->pos() ) )
 219         {
 220             msg_Dbg( p_intf, "Moving video to correct screen");
 221             reparentable->move( QPoint( screenres.x(), screenres.y() ) );
 222         }
 223         reparentable->show();
 224     }
 225     else
 226     {   /* Go windowed */
 227         reparentable->setWindowFlags( newflags );
 228         reparentable->setWindowState( newstate );
 229         layout->addWidget( reparentable );
 230     }
 231     videoSync();
 232 }
 233
 234 void VideoWidget::release( void )
 235 {
 236     msg_Dbg( p_intf, "Video is not needed anymore" );
 237     //layout->removeWidget( reparentable );
 238
 239 #ifdef WIN32
 240     /* Come back to default thumbnail for Windows 7 taskbar */
 241     LPTASKBARLIST3 p_taskbl;
 242
 243     CoInitialize( 0 );
 244
 245     if( S_OK == CoCreateInstance( &clsid_ITaskbarList,
 246                 NULL, CLSCTX_INPROC_SERVER,
 247                 &IID_ITaskbarList3,
 248                 (void **)&p_taskbl) )
 249     {
 250         p_taskbl->vt->HrInit(p_taskbl);
 251
 252         HWND hroot = GetAncestor(reparentable->winId(),GA_ROOT);
 253
 254         if (S_OK != p_taskbl->vt->SetThumbnailClip(p_taskbl, hroot, NULL))
 255             msg_Err(p_intf, "SetThumbNailClip failed");
 256         msg_Err(p_intf, "Releasing taskbar | root handle = %08x", hroot);
 257         p_taskbl->vt->Release(p_taskbl);
 258     }
 259     CoUninitialize();
 260
 261 #endif
 262
 263     delete reparentable;
 264     reparentable = NULL;
 265     videoSize = QSize();
 266     updateGeometry();
 267     hide();
 268 }
 269
 270
 271 QSize VideoWidget::sizeHint() const
 272 {
 273     return videoSize;
 274 }
 275
 276 /**********************************************************************
 277  * Background Widget. Show a simple image background. Currently,
 278  * it's album art if present or cone.
 279  **********************************************************************/
 280 #define ICON_SIZE 128
 281 #define MAX_BG_SIZE 400
 282 #define MIN_BG_SIZE 128
 283
 284 BackgroundWidget::BackgroundWidget( intf_thread_t *_p_i )
 285                  :QWidget( NULL ), p_intf( _p_i )
 286 {
 287     /* We should use that one to take the more size it can */
 288     setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding);
 289
 290     /* A dark background */
 291     setAutoFillBackground( true );
 292     QPalette plt = palette();
 293     plt.setColor( QPalette::Active, QPalette::Window , Qt::black );
 294     plt.setColor( QPalette::Inactive, QPalette::Window , Qt::black );
 295     setPalette( plt );
 296
 297     /* A cone in the middle */
 298     label = new QLabel;
 299     label->setMargin( 5 );
 300 /*    label->setMaximumHeight( MAX_BG_SIZE );
 301     label->setMaximumWidth( MAX_BG_SIZE );
 302     label->setMinimumHeight( MIN_BG_SIZE );
 303     label->setMinimumWidth( MIN_BG_SIZE );*/
 304     label->setAlignment( Qt::AlignCenter );
 305     if( QDate::currentDate().dayOfYear() >= 354 )
 306         label->setPixmap( QPixmap( ":/logo/vlc128-christmas.png" ) );
 307     else
 308         label->setPixmap( QPixmap( ":/logo/vlc128.png" ) );
 309
 310     QGridLayout *backgroundLayout = new QGridLayout( this );
 311     backgroundLayout->addWidget( label, 0, 1 );
 312     backgroundLayout->setColumnStretch( 0, 1 );
 313     backgroundLayout->setColumnStretch( 2, 1 );
 314
 315     CONNECT( THEMIM->getIM(), artChanged( QString ),
 316              this, updateArt( const QString& ) );
 317 }
 318
 319 BackgroundWidget::~BackgroundWidget()
 320 {}
 321
 322 void BackgroundWidget::resizeEvent( QResizeEvent * event )
 323 {
 324     if( event->size().height() <= MIN_BG_SIZE )
 325         label->hide();
 326     else
 327         label->show();
 328 }
 329
 330 void BackgroundWidget::updateArt( const QString& url )
 331 {
 332     if( url.isEmpty() )
 333     {
 334         if( QDate::currentDate().dayOfYear() >= 354 )
 335             label->setPixmap( QPixmap( ":/logo/vlc128-christmas.png" ) );
 336         else
 337             label->setPixmap( QPixmap( ":/logo/vlc128.png" ) );
 338     }
 339     else
 340     {
 341         QPixmap pixmap( url );
 342         if( pixmap.width() > label->maximumWidth() ||
 343             pixmap.height() > label->maximumHeight() )
 344         {
 345             pixmap = pixmap.scaled( label->maximumWidth(),
 346                           label->maximumHeight(), Qt::KeepAspectRatio );
 347         }
 348
 349         label->setPixmap( pixmap );
 350     }
 351 }
 352
 353 void BackgroundWidget::contextMenuEvent( QContextMenuEvent *event )
 354 {
 355     QVLCMenu::PopupMenu( p_intf, true );
 356     event->accept();
 357 }
 358
 359 #if 0
 360 #include <QPushButton>
 361 #include <QHBoxLayout>
 362
 363 /**********************************************************************
 364  * Visualization selector panel
 365  **********************************************************************/
 366 VisualSelector::VisualSelector( intf_thread_t *_p_i ) :
 367                                 QFrame( NULL ), p_intf( _p_i )
 368 {
 369     QHBoxLayout *layout = new QHBoxLayout( this );
 370     layout->setMargin( 0 );
 371     QPushButton *prevButton = new QPushButton( "Prev" );
 372     QPushButton *nextButton = new QPushButton( "Next" );
 373     layout->addWidget( prevButton );
 374     layout->addWidget( nextButton );
 375
 376     layout->addStretch( 10 );
 377     layout->addWidget( new QLabel( qtr( "Current visualization" ) ) );
 378
 379     current = new QLabel( qtr( "None" ) );
 380     layout->addWidget( current );
 381
 382     BUTTONACT( prevButton, prev() );
 383     BUTTONACT( nextButton, next() );
 384
 385     setLayout( layout );
 386     setMaximumHeight( 35 );
 387 }
 388
 389 VisualSelector::~VisualSelector()
 390 {}
 391
 392 void VisualSelector::prev()
 393 {
 394     char *psz_new = aout_VisualPrev( p_intf );
 395     if( psz_new )
 396     {
 397         current->setText( qfu( psz_new ) );
 398         free( psz_new );
 399     }
 400 }
 401
 402 void VisualSelector::next()
 403 {
 404     char *psz_new = aout_VisualNext( p_intf );
 405     if( psz_new )
 406     {
 407         current->setText( qfu( psz_new ) );
 408         free( psz_new );
 409     }
 410 }
 411 #endif
 412
 413 SpeedLabel::SpeedLabel( intf_thread_t *_p_intf, const QString& text,
 414                         QWidget *parent )
 415            : QLabel( text, parent ), p_intf( _p_intf )
 416 {
 417     setToolTip( qtr( "Current playback speed.\nClick to adjust" ) );
 418
 419     /* Create the Speed Control Widget */
 420     speedControl = new SpeedControlWidget( p_intf, this );
 421     speedControlMenu = new QMenu( this );
 422
 423     QWidgetAction *widgetAction = new QWidgetAction( speedControl );
 424     widgetAction->setDefaultWidget( speedControl );
 425     speedControlMenu->addAction( widgetAction );
 426
 427     /* Change the SpeedRate in the Status Bar */
 428     CONNECT( THEMIM->getIM(), rateChanged( int ), this, setRate( int ) );
 429
 430     CONNECT( THEMIM, inputChanged( input_thread_t * ),
 431              speedControl, activateOnState() );
 432
 433 }
 434 SpeedLabel::~SpeedLabel()
 435 {
 436         delete speedControl;
 437         delete speedControlMenu;
 438 }
 439 /****************************************************************************
 440  * Small right-click menu for rate control
 441  ****************************************************************************/
 442 void SpeedLabel::showSpeedMenu( QPoint pos )
 443 {
 444     speedControlMenu->exec( QCursor::pos() - pos
 445                           + QPoint( 0, height() ) );
 446 }
 447
 448 void SpeedLabel::setRate( int rate )
 449 {
 450     QString str;
 451     str.setNum( ( 1000 / (double)rate ), 'f', 2 );
 452     str.append( "x" );
 453     setText( str );
 454     setToolTip( str );
 455     speedControl->updateControls( rate );
 456 }
 457
 458 /**********************************************************************
 459  * Speed control widget
 460  **********************************************************************/
 461 SpeedControlWidget::SpeedControlWidget( intf_thread_t *_p_i, QWidget *_parent )
 462                     : QFrame( _parent ), p_intf( _p_i )
 463 {
 464     QSizePolicy sizePolicy( QSizePolicy::Maximum, QSizePolicy::Fixed );
 465     sizePolicy.setHorizontalStretch( 0 );
 466     sizePolicy.setVerticalStretch( 0 );
 467
 468     speedSlider = new QSlider( this );
 469     speedSlider->setSizePolicy( sizePolicy );
 470     speedSlider->setMaximumSize( QSize( 80, 200 ) );
 471     speedSlider->setOrientation( Qt::Vertical );
 472     speedSlider->setTickPosition( QSlider::TicksRight );
 473
 474     speedSlider->setRange( -34, 34 );
 475     speedSlider->setSingleStep( 1 );
 476     speedSlider->setPageStep( 1 );
 477     speedSlider->setTickInterval( 17 );
 478
 479     CONNECT( speedSlider, valueChanged( int ), this, updateRate( int ) );
 480
 481     QToolButton *normalSpeedButton = new QToolButton( this );
 482     normalSpeedButton->setMaximumSize( QSize( 26, 20 ) );
 483     normalSpeedButton->setAutoRaise( true );
 484     normalSpeedButton->setText( "1x" );
 485     normalSpeedButton->setToolTip( qtr( "Revert to normal play speed" ) );
 486
 487     CONNECT( normalSpeedButton, clicked(), this, resetRate() );
 488
 489     QVBoxLayout *speedControlLayout = new QVBoxLayout( this );
 490     speedControlLayout->setContentsMargins( 4, 4, 4, 4 );
 491     speedControlLayout->setSpacing( 4 );
 492     speedControlLayout->addWidget( speedSlider );
 493     speedControlLayout->addWidget( normalSpeedButton );
 494
 495     activateOnState();
 496 }
 497
 498 void SpeedControlWidget::activateOnState()
 499 {
 500     speedSlider->setEnabled( THEMIM->getIM()->hasInput() );
 501 }
 502
 503 void SpeedControlWidget::updateControls( int rate )
 504 {
 505     if( speedSlider->isSliderDown() )
 506     {
 507         //We don't want to change anything if the user is using the slider
 508         return;
 509     }
 510
 511     double value = 17 * log( (double)INPUT_RATE_DEFAULT / rate ) / log( 2 );
 512     int sliderValue = (int) ( ( value > 0 ) ? value + .5 : value - .5 );
 513
 514     if( sliderValue < speedSlider->minimum() )
 515     {
 516         sliderValue = speedSlider->minimum();
 517     }
 518     else if( sliderValue > speedSlider->maximum() )
 519     {
 520         sliderValue = speedSlider->maximum();
 521     }
 522
 523     //Block signals to avoid feedback loop
 524     speedSlider->blockSignals( true );
 525     speedSlider->setValue( sliderValue );
 526     speedSlider->blockSignals( false );
 527 }
 528
 529 void SpeedControlWidget::updateRate( int sliderValue )
 530 {
 531     double speed = pow( 2, (double)sliderValue / 17 );
 532     int rate = INPUT_RATE_DEFAULT / speed;
 533
 534     THEMIM->getIM()->setRate(rate);
 535 }
 536
 537 void SpeedControlWidget::resetRate()
 538 {
 539     THEMIM->getIM()->setRate( INPUT_RATE_DEFAULT );
 540 }
 541
 542 CoverArtLabel::CoverArtLabel( QWidget *parent, intf_thread_t *_p_i )
 543               : QLabel( parent ), p_intf( _p_i )
 544 {
 545     setContextMenuPolicy( Qt::ActionsContextMenu );
 546     CONNECT( this, updateRequested(), this, askForUpdate() );
 547
 548     setMinimumHeight( 128 );
 549     setMinimumWidth( 128 );
 550     setMaximumHeight( 128 );
 551     setMaximumWidth( 128 );
 552     setScaledContents( false );
 553     setAlignment( Qt::AlignCenter );
 554
 555     QList< QAction* > artActions = actions();
 556     QAction *action = new QAction( qtr( "Download cover art" ), this );
 557     CONNECT( action, triggered(), this, askForUpdate() );
 558     addAction( action );
 559
 560     showArtUpdate( "" );
 561 }
 562
 563 CoverArtLabel::~CoverArtLabel()
 564 {
 565     QList< QAction* > artActions = actions();
 566     foreach( QAction *act, artActions )
 567         removeAction( act );
 568 }
 569
 570 void CoverArtLabel::showArtUpdate( const QString& url )
 571 {
 572     QPixmap pix;
 573     if( !url.isEmpty() && pix.load( url ) )
 574     {
 575         pix = pix.scaled( maximumWidth(), maximumHeight(),
 576                           Qt::KeepAspectRatioByExpanding );
 577     }
 578     else
 579     {
 580         pix = QPixmap( ":/noart.png" );
 581     }
 582     setPixmap( pix );
 583 }
 584
 585 void CoverArtLabel::askForUpdate()
 586 {
 587     THEMIM->getIM()->requestArtUpdate();
 588 }
 589
 590 TimeLabel::TimeLabel( intf_thread_t *_p_intf  ) :QLabel(), p_intf( _p_intf )
 591 {
 592    b_remainingTime = false;
 593    setText( " --:--/--:-- " );
 594    setAlignment( Qt::AlignRight | Qt::AlignVCenter );
 595    setToolTip( qtr( "Toggle between elapsed and remaining time" ) );
 596
 597
 598    CONNECT( THEMIM->getIM(), cachingChanged( float ),
 599             this, setCaching( float ) );
 600    CONNECT( THEMIM->getIM(), positionUpdated( float, int64_t, int ),
 601              this, setDisplayPosition( float, int64_t, int ) );
 602 }
 603
 604 void TimeLabel::setDisplayPosition( float pos, int64_t t, int length )
 605 {
 606     if( pos == -1.f )
 607     {
 608         setText( " --:--/--:-- " );
 609         return;
 610     }
 611
 612     int time = t / 1000000;
 613     char psz_length[MSTRTIME_MAX_SIZE], psz_time[MSTRTIME_MAX_SIZE];
 614     secstotimestr( psz_length, length );
 615     secstotimestr( psz_time, ( b_remainingTime && length ) ? length - time
 616                                                            : time );
 617
 618     QString timestr;
 619     timestr.sprintf( " %s%s/%s ", (b_remainingTime && length) ? "-" : "",
 620                      psz_time, ( !length && time ) ? "--:--" : psz_length );
 621
 622     setText( timestr );
 623 }
 624
 625 void TimeLabel::toggleTimeDisplay()
 626 {
 627     b_remainingTime = !b_remainingTime;
 628 }
 629
 630 void TimeLabel::setCaching( float f_cache )
 631 {
 632     QString amount;
 633     amount.sprintf("Buff: %i%%", (int)(100*f_cache) );
 634     setText( amount );
 635 }
 636
 637