interface_widgets.cpp

VLC Player Source Code

/*****************************************************************************
 * interface_widgets.cpp : Custom widgets for the main interface
 ****************************************************************************
 * Copyright ( C ) 2006 the VideoLAN team
 * $Id: 777da1627ca9135518d195acbe0424a4822facb2 $
 *
 * Authors: Clément Stenac <[e-mail]>
 *          Jean-Baptiste Kempf <[e-mail]>
 *          Rafaël Carré <funman@videolanorg>
 *          Ilkka Ollakka <[e-mail]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * ( at your option ) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

#include <vlc_vout.h>

#include "dialogs_provider.hpp"
#include "components/interface_widgets.hpp"
#include "main_interface.hpp"
#include "input_manager.hpp"
#include "menus.hpp"
#include "util/input_slider.hpp"
#include "util/customwidgets.hpp"

#include <QLabel>
#include <QSpacerItem>
#include <QCursor>
#include <QPushButton>
#include <QToolButton>
#include <QHBoxLayout>
#include <QMenu>
#include <QPalette>
#include <QResizeEvent>
#include <QDate>

#ifdef Q_WS_X11
# include <X11/Xlib.h>
# include <qx11info_x11.h>
#endif

#include <math.h>

#define I_PLAY_TOOLTIP N_("Play\nIf the playlist is empty, open a media")

/**********************************************************************
 * Video Widget. A simple frame on which video is drawn
 * This class handles resize issues
 **********************************************************************/

VideoWidget::VideoWidget( intf_thread_t *_p_i ) : QFrame( NULL ), p_intf( _p_i )
{
    /* Init */
    i_vout = 0;
    videoSize.rwidth() = -1;
    videoSize.rheight() = -1;

    hide();

    /* Set the policy to expand in both directions */
//    setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );

    /* Black background is more coherent for a Video Widget */
    QPalette plt =  palette();
    plt.setColor( QPalette::Window, Qt::black );
    setPalette( plt );
    setAutoFillBackground(true);

    /* Indicates that the widget wants to draw directly onto the screen.
       Widgets with this attribute set do not participate in composition
       management */
    setAttribute( Qt::WA_PaintOnScreen, true );

    /* The core can ask through a callback to show the video. */
#if HAS_QT43
    connect( this, SIGNAL(askVideoWidgetToShow( unsigned int, unsigned int)),
             this, SLOT(SetSizing(unsigned int, unsigned int )),
             Qt::BlockingQueuedConnection );
#else
#warning This is broken. Fix it with a QEventLoop with a processEvents ()
    connect( this, SIGNAL(askVideoWidgetToShow( unsigned int, unsigned int)),
             this, SLOT(SetSizing(unsigned int, unsigned int )) );
#endif
}

void VideoWidget::paintEvent(QPaintEvent *ev)
{
    QFrame::paintEvent(ev);
#ifdef Q_WS_X11
    XFlush( QX11Info::display() );
#endif
}

/* Kill the vout at Destruction */
VideoWidget::~VideoWidget()
{
    vout_thread_t *p_vout = i_vout ?
        (vout_thread_t *)vlc_object_get( i_vout ) : NULL;

    if( p_vout )
    {
        if( !p_intf->psz_switch_intf )
        {
            if( vout_Control( p_vout, VOUT_CLOSE ) != VLC_SUCCESS )
                vout_Control( p_vout, VOUT_REPARENT );
        }
        else
        {
            if( vout_Control( p_vout, VOUT_REPARENT ) != VLC_SUCCESS )
                vout_Control( p_vout, VOUT_CLOSE );
        }
        vlc_object_release( p_vout );
    }
}

/**
 * Request the video to avoid the conflicts
 **/
void *VideoWidget::request( vout_thread_t *p_nvout, int *pi_x, int *pi_y,
                            unsigned int *pi_width, unsigned int *pi_height )
{
    msg_Dbg( p_intf, "Video was requested %i, %i", *pi_x, *pi_y );
    emit askVideoWidgetToShow( *pi_width, *pi_height );
    if( i_vout )
    {
        msg_Dbg( p_intf, "embedded video already in use" );
        return NULL;
    }
    i_vout = p_nvout->i_object_id;
#ifndef NDEBUG
    msg_Dbg( p_intf, "embedded video ready (handle %p)", winId() );
#endif
    return ( void* )winId();
}

/* Set the Widget to the correct Size */
/* Function has to be called by the parent
   Parent has to care about resizing himself*/
void VideoWidget::SetSizing( unsigned int w, unsigned int h )
{
    msg_Dbg( p_intf, "Video is resizing to: %i %i", w, h );
    videoSize.rwidth() = w;
    videoSize.rheight() = h;
    if( isHidden() ) show();
    updateGeometry(); // Needed for deinterlace
}

void VideoWidget::release( void *p_win )
{
    msg_Dbg( p_intf, "Video is not needed anymore" );
    i_vout = 0;
    videoSize.rwidth() = 0;
    videoSize.rheight() = 0;
    updateGeometry();
    hide();
}

QSize VideoWidget::sizeHint() const
{
    return videoSize;
}

/**********************************************************************
 * Background Widget. Show a simple image background. Currently,
 * it's album art if present or cone.
 **********************************************************************/
#define ICON_SIZE 128
#define MAX_BG_SIZE 400
#define MIN_BG_SIZE 128

BackgroundWidget::BackgroundWidget( intf_thread_t *_p_i )
                 :QWidget( NULL ), p_intf( _p_i )
{
    /* We should use that one to take the more size it can */
    setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding);

    /* A dark background */
    setAutoFillBackground( true );
    plt = palette();
    plt.setColor( QPalette::Active, QPalette::Window , Qt::black );
    plt.setColor( QPalette::Inactive, QPalette::Window , Qt::black );
    setPalette( plt );

    /* A cone in the middle */
    label = new QLabel;
    label->setMargin( 5 );
    label->setMaximumHeight( MAX_BG_SIZE );
    label->setMaximumWidth( MAX_BG_SIZE );
    label->setMinimumHeight( MIN_BG_SIZE );
    label->setMinimumWidth( MIN_BG_SIZE );
    if( QDate::currentDate().dayOfYear() >= 354 )
        label->setPixmap( QPixmap( ":/vlc128-christmas.png" ) );
    else
        label->setPixmap( QPixmap( ":/vlc128.png" ) );

    QGridLayout *backgroundLayout = new QGridLayout( this );
    backgroundLayout->addWidget( label, 0, 1 );
    backgroundLayout->setColumnStretch( 0, 1 );
    backgroundLayout->setColumnStretch( 2, 1 );

    CONNECT( THEMIM->getIM(), artChanged( input_item_t* ),
             this, updateArt( input_item_t* ) );
}

BackgroundWidget::~BackgroundWidget()
{}

void BackgroundWidget::resizeEvent( QResizeEvent * event )
{
    if( event->size().height() <= MIN_BG_SIZE )
        label->hide();
    else
        label->show();
}

void BackgroundWidget::updateArt( input_item_t *p_item )
{
    QString url;
    if( p_item )
    {
        char *psz_art = input_item_GetArtURL( p_item );
        url = psz_art;
        free( psz_art );
    }

    if( url.isEmpty() )
    {
        if( QDate::currentDate().dayOfYear() >= 354 )
            label->setPixmap( QPixmap( ":/vlc128-christmas.png" ) );
        else
            label->setPixmap( QPixmap( ":/vlc128.png" ) );
    }
    else
    {
        url = url.replace( "file://", QString("" ) );
        /* Taglib seems to define a attachment://, It won't work yet */
        url = url.replace( "attachment://", QString("" ) );
        label->setPixmap( QPixmap( url ) );
    }
}

void BackgroundWidget::contextMenuEvent( QContextMenuEvent *event )
{
    QVLCMenu::PopupMenu( p_intf, true );
}

#if 0
/**********************************************************************
 * Visualization selector panel
 **********************************************************************/
VisualSelector::VisualSelector( intf_thread_t *_p_i ) :
                                QFrame( NULL ), p_intf( _p_i )
{
    QHBoxLayout *layout = new QHBoxLayout( this );
    layout->setMargin( 0 );
    QPushButton *prevButton = new QPushButton( "Prev" );
    QPushButton *nextButton = new QPushButton( "Next" );
    layout->addWidget( prevButton );
    layout->addWidget( nextButton );

    layout->addStretch( 10 );
    layout->addWidget( new QLabel( qtr( "Current visualization" ) ) );

    current = new QLabel( qtr( "None" ) );
    layout->addWidget( current );

    BUTTONACT( prevButton, prev() );
    BUTTONACT( nextButton, next() );

    setLayout( layout );
    setMaximumHeight( 35 );
}

VisualSelector::~VisualSelector()
{}

void VisualSelector::prev()
{
    char *psz_new = aout_VisualPrev( p_intf );
    if( psz_new )
    {
        current->setText( qfu( psz_new ) );
        free( psz_new );
    }
}

void VisualSelector::next()
{
    char *psz_new = aout_VisualNext( p_intf );
    if( psz_new )
    {
        current->setText( qfu( psz_new ) );
        free( psz_new );
    }
}
#endif

/**********************************************************************
 * TEH controls
 **********************************************************************/

#define setupSmallButton( aButton ){  \
    aButton->setMaximumSize( QSize( 26, 26 ) ); \
    aButton->setMinimumSize( QSize( 26, 26 ) ); \
    aButton->setIconSize( QSize( 20, 20 ) ); }

/* init static variables in advanced controls */
mtime_t AdvControlsWidget::timeA = 0;
mtime_t AdvControlsWidget::timeB = 0;

AdvControlsWidget::AdvControlsWidget( intf_thread_t *_p_i, bool b_fsCreation = false ) :
                                           QFrame( NULL ), p_intf( _p_i )
{
    QHBoxLayout *advLayout = new QHBoxLayout( this );
    advLayout->setMargin( 0 );
    advLayout->setSpacing( 0 );
    advLayout->setAlignment( Qt::AlignBottom );

    /* A to B Button */
    ABButton = new QPushButton;
    setupSmallButton( ABButton );
    advLayout->addWidget( ABButton );
    BUTTON_SET_ACT_I( ABButton, "", atob_nob,
      qtr( "Loop from point A to point B continuously.\nClick to set point A" ),
      fromAtoB() );
    timeA = timeB = 0;
    i_last_input_id = 0;
    /* in FS controller we skip this, because we dont want to have it double
       controlled */
    if( !b_fsCreation )
        CONNECT( THEMIM->getIM(), positionUpdated( float, int, int ),
                 this, AtoBLoop( float, int, int ) );
    /* set up synchronization between main controller and fs controller */
    CONNECT( THEMIM->getIM(), advControlsSetIcon(), this, setIcon() );
    connect( this, SIGNAL( timeChanged() ),
        THEMIM->getIM(), SIGNAL( advControlsSetIcon()));
#if 0
    frameButton = new QPushButton( "Fr" );
    frameButton->setMaximumSize( QSize( 26, 26 ) );
    frameButton->setIconSize( QSize( 20, 20 ) );
    advLayout->addWidget( frameButton );
    BUTTON_SET_ACT( frameButton, "Fr", qtr( "Frame by frame" ), frame() );
#endif

    /* Record Button */
    recordButton = new QPushButton;
    setupSmallButton( recordButton );
    advLayout->addWidget( recordButton );
    BUTTON_SET_ACT_I( recordButton, "", record,
            qtr( "Record" ), record() );

    /* Snapshot Button */
    snapshotButton = new QPushButton;
    setupSmallButton( snapshotButton );
    advLayout->addWidget( snapshotButton );
    BUTTON_SET_ACT_I( snapshotButton, "", snapshot,
            qtr( "Take a snapshot" ), snapshot() );
}

AdvControlsWidget::~AdvControlsWidget()
{}

void AdvControlsWidget::enableInput( bool enable )
{
    int i_input_id = 0;
    if( THEMIM->getInput() != NULL )
    {
        input_item_t *p_item = input_GetItem( THEMIM->getInput() );
        i_input_id = p_item->i_id;

        if( var_Type( THEMIM->getInput(), "record-toggle" ) == VLC_VAR_VOID )
            recordButton->setVisible( true );
        else
            recordButton->setVisible( false );
    }
    else
        recordButton->setVisible( false );