main_interface.cpp 11.9 KB
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/*****************************************************************************
 * main_inteface.cpp : Main interface
 ****************************************************************************
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 * Copyright (C) 2006 the VideoLAN team
 * $Id$
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 *
 * Authors: Clément Stenac <zorglub@videolan.org>
 *
 * 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. *****************************************************************************/

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#include "qt4.hpp"
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#include "main_interface.hpp"
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#include "input_manager.hpp"
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#include "util/input_slider.hpp"
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#include "util/qvlcframe.hpp"
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#include "dialogs_provider.hpp"
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#include "components/interface_widgets.hpp"
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#include "dialogs/playlist.hpp"
#include "menus.hpp"

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#include <QCloseEvent>
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#include <QPushButton>
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#include <QStatusBar>
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#include <QKeyEvent>
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#include <assert.h>
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#include <vlc_keys.h>
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#ifdef WIN32
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    #define PREF_W 410
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    #define PREF_H 121
#else
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    #define PREF_W 450
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    #define PREF_H 125
#endif
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static int InteractCallback( vlc_object_t *, const char *, vlc_value_t,
                             vlc_value_t, void *);

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MainInterface::MainInterface( intf_thread_t *_p_intf ) : QVLCMW( _p_intf )
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{
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    settings = new QSettings( "VideoLAN", "VLC" );
    settings->beginGroup( "MainWindow" );

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    setWindowTitle( QString::fromUtf8( _("VLC media player") ) );
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    handleMainUi( settings );

    QVLCMenu::createMenuBar( menuBar(), p_intf );
    /* Status bar */
    timeLabel = new QLabel( 0 );
    nameLabel = new QLabel( 0 );
    statusBar()->addWidget( nameLabel, 4 );
    statusBar()->addPermanentWidget( timeLabel, 1 );
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    setFocusPolicy( Qt::StrongFocus );

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    /* Init input manager */
    MainInputManager::getInstance( p_intf );
    ON_TIMEOUT( updateOnTimer() );

    /* Volume control */
    CONNECT( ui.volumeSlider, valueChanged(int), this, updateVolume(int) );
    /* Connect the input manager to the GUI elements it manages */
    CONNECT( THEMIM->getIM(), positionUpdated( float, int, int ),
             slider, setPosition( float,int, int ) );
    CONNECT( THEMIM->getIM(), positionUpdated( float, int, int ),
             this, setDisplay( float, int, int ) );
    CONNECT( THEMIM->getIM(), nameChanged( QString ), this,setName( QString ) );
    CONNECT( THEMIM->getIM(), statusChanged( int ), this, setStatus( int ) );
    CONNECT( slider, sliderDragged( float ),
             THEMIM->getIM(), sliderUpdate( float ) );

    /* Actions */
    BUTTONACT( ui.playButton, play() );
    BUTTONACT( ui.stopButton, stop() );
    BUTTONACT( ui.nextButton, next() );
    BUTTONACT( ui.prevButton, prev() );
    BUTTONACT( ui.playlistButton, playlist() );

    var_Create( p_intf, "interaction", VLC_VAR_ADDRESS );
    var_AddCallback( p_intf, "interaction", InteractCallback, this );
    p_intf->b_interaction = VLC_TRUE;
}

MainInterface::~MainInterface()
{
    /// \todo Save everything
    p_intf->b_interaction = VLC_FALSE;
    var_DelCallback( p_intf, "interaction", InteractCallback, this );
}

void MainInterface::handleMainUi( QSettings *settings )
{
    QWidget *main = new QWidget( this );
    setCentralWidget( main );
    ui.setupUi( centralWidget() );

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    slider = new InputSlider( Qt::Horizontal, NULL );
    ui.hboxLayout->insertWidget( 0, slider );
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    ui.prevButton->setText( "" );
    ui.nextButton->setText( "" );
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    ui.playButton->setText( "" );
    ui.stopButton->setText( "" );
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    ui.prevButton->setIcon( QIcon( ":/pixmaps/previous.png" ) );
    ui.nextButton->setIcon( QIcon( ":/pixmaps/next.png" ) );
    ui.playButton->setIcon( QIcon( ":/pixmaps/play.png" ) );
    ui.stopButton->setIcon( QIcon( ":/pixmaps/stop.png" ) );
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    /* Volume */
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    ui.volLowLabel->setPixmap( QPixmap( ":/pixmaps/volume-low.png" ) );
    ui.volHighLabel->setPixmap( QPixmap( ":/pixmaps/volume-high.png" ) );
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    ui.volumeSlider->setMaximum( 100 );
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    VolumeClickHandler *h = new VolumeClickHandler( this );
    ui.volLowLabel->installEventFilter(h);
    ui.volHighLabel->installEventFilter(h);
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    ui.volumeSlider->setFocusPolicy( Qt::NoFocus );

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    ui.playlistButton->setText( "" );
    ui.playlistButton->setIcon( QIcon( ":/pixmaps/volume-low.png" ) );
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    /* Fetch configuration from settings and vlc config */
    videoEmbeddedFlag = false;
    if( config_GetInt( p_intf, "embedded-video" ) )
        videoEmbeddedFlag = true;

    playlistEmbeddedFlag = true;
    /// \todo fetch playlist settings
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    resize ( PREF_W, PREF_H );
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    if( videoEmbeddedFlag )
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    {
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        videoWidget = new VideoWidget( p_intf );
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        videoWidget->widgetSize = QSize( 1, 1 );
        videoWidget->resize( videoWidget->widgetSize );
        ui.vboxLayout->insertWidget( 0, videoWidget );

        if( config_GetInt( p_intf, "qt-always-video" ))
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        {
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            bgWidget = new BackgroundWidget( p_intf );
            bgWidget->widgetSize = settings->value( "backgroundSize",
                                                QSize( 200, 200 ) ).toSize();
            ui.vboxLayout->insertWidget( 0, bgWidget ); 
            bgWidget->hide();
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        }
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    }
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    // Size for fixed elements
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    addSize = QSize( ui.vboxLayout->margin() * 2, PREF_H );
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    calculateInterfaceSize();
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    resize( mainSize );
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    /// \bug still needed ?
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    mainSize = size();
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    setMinimumSize( PREF_W, addSize.height() );
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}

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void MainInterface::calculateInterfaceSize()
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{
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    int width = 0, height = 0;
    if( bgWidget->isVisible() )
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    {
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        width += bgWidget->widgetSize.width();
        height += bgWidget->widgetSize.height();
        assert( !playlistWidget->isVisible() );

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    }
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    if( playlistWidget->isVisible() )
    {
        width += playlistWidget->widgetSize.width();
        height += playlistWidget->widgetSize.height();
    }
    mainSize.setWidth( width + videoWidget->widgetSize.width() + 
                                               addSize.width() );
    mainSize.setHeight( height + videoWidget->widgetSize.height() +
                                                 addSize.height() );
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}
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void MainInterface::resizeEvent( QResizeEvent *e )
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{
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    videoWidget->widgetSize.setHeight( e->size().height() - addSize.height() );
    videoWidget->widgetSize.setWidth( e->size().width() - addSize.width() );
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    p_intf->p_sys->p_video->updateGeometry() ;
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}

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void MainInterface::keyPressEvent( QKeyEvent *e )
{
    int i_vlck = 0;
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    /* Handle modifiers */
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    if( e->modifiers()& Qt::ShiftModifier ) i_vlck |= KEY_MODIFIER_SHIFT;
    if( e->modifiers()& Qt::AltModifier ) i_vlck |= KEY_MODIFIER_ALT;
    if( e->modifiers()& Qt::ControlModifier ) i_vlck |= KEY_MODIFIER_CTRL;
    if( e->modifiers()& Qt::MetaModifier ) i_vlck |= KEY_MODIFIER_META;

    bool found = false;
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    /* Look for some special keys */
#define HANDLE( qt, vk ) case Qt::qt : i_vlck |= vk; found = true;break
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    switch( e->key() )
    {
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        HANDLE( Key_Left, KEY_LEFT );
        HANDLE( Key_Right, KEY_RIGHT );
        HANDLE( Key_Up, KEY_UP );
        HANDLE( Key_Down, KEY_DOWN );
        HANDLE( Key_Space, KEY_SPACE );
        HANDLE( Key_Escape, KEY_ESC );
        HANDLE( Key_Enter, KEY_ENTER );
        HANDLE( Key_F1, KEY_F1 );
        HANDLE( Key_F2, KEY_F2 );
        HANDLE( Key_F3, KEY_F3 );
        HANDLE( Key_F4, KEY_F4 );
        HANDLE( Key_F5, KEY_F5 );
        HANDLE( Key_F6, KEY_F6 );
        HANDLE( Key_F7, KEY_F7 );
        HANDLE( Key_F8, KEY_F8 );
        HANDLE( Key_F9, KEY_F9 );
        HANDLE( Key_F10, KEY_F10 );
        HANDLE( Key_F11, KEY_F11 );
        HANDLE( Key_F12, KEY_F12 );
        HANDLE( Key_PageUp, KEY_PAGEUP );
        HANDLE( Key_PageDown, KEY_PAGEDOWN );
        HANDLE( Key_Home, KEY_HOME );
        HANDLE( Key_End, KEY_END );
        HANDLE( Key_Insert, KEY_INSERT );
        HANDLE( Key_Delete, KEY_DELETE );

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    }
    if( !found )
    {
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        /* Force lowercase */
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        if( e->key() >= Qt::Key_A && e->key() <= Qt::Key_Z )
            i_vlck += e->key() + 32;
        /* Rest of the ascii range */
        else if( e->key() >= Qt::Key_Space && e->key() <= Qt::Key_AsciiTilde )
            i_vlck += e->key();
    }
    if( i_vlck >= 0 )
    {
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        var_SetInteger( p_intf->p_libvlc, "key-pressed", i_vlck );
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        e->accept();
    }
    else
        e->ignore();
}

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void MainInterface::stop()
{
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    playlist_Stop( THEPL );
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}
void MainInterface::play()
{
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    if( !THEPL->i_size || !THEPL->i_enabled )
    {
        /* The playlist is empty, open a file requester */
        THEDP->openDialog();
        setStatus( 0 );
        return;
    }
    THEMIM->togglePlayPause();
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}
void MainInterface::prev()
{
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    playlist_Prev( THEPL );
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}
void MainInterface::next()
{
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    playlist_Next( THEPL );
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}

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void MainInterface::playlist()
{
    // Toggle the playlist dialog
    if( !playlistEmbeddedFlag )
    {
        if( playlistWidget )
        {
            /// \todo Destroy it 

        }
        THEDP->playlistDialog();
        return;
    }

    if( !playlistWidget )
    {
        PlaylistDialog::killInstance();
        playlistWidget = new PlaylistWidget( p_intf );
        ui.vboxLayout->insertWidget( 0, playlistWidget );
        playlistWidget->widgetSize = settings->value( "playlistSize",
                                               QSize( 600, 300 ) ).toSize();
    }
    /// Todo, reset its size ?
    if( playlistWidget->isVisible() ) playlistWidget->show();
    else playlistWidget->hide();

    calculateInterfaceSize();
    resize( mainSize );
}

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void MainInterface::setDisplay( float pos, int time, int length )
{
    char psz_length[MSTRTIME_MAX_SIZE], psz_time[MSTRTIME_MAX_SIZE];
    secstotimestr( psz_length, length );
    secstotimestr( psz_time, time );
    QString title;
    title.sprintf( "%s/%s", psz_time, psz_length );
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    timeLabel->setText( " "+title+" " );
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}

void MainInterface::setName( QString name )
{
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    nameLabel->setText( " " + name+" " );
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}

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void MainInterface::setStatus( int status )
{
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    if( status == 1 ) // Playing
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        ui.playButton->setIcon( QIcon( ":/pixmaps/pause.png" ) );
    else
        ui.playButton->setIcon( QIcon( ":/pixmaps/play.png" ) );
}

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static bool b_my_volume;

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void MainInterface::updateOnTimer()
{
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    if( p_intf->b_die )
    {
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        QApplication::closeAllWindows();
        DialogsProvider::killInstance();
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        QApplication::quit();
    }
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    audio_volume_t i_volume;
    aout_VolumeGet( p_intf, &i_volume );
    i_volume = (i_volume *  200 )/ AOUT_VOLUME_MAX ;
    int i_gauge = ui.volumeSlider->value();
    b_my_volume = false;
    if( i_volume - i_gauge > 1 || i_gauge - i_volume > 1 )
    {
        b_my_volume = true;
        ui.volumeSlider->setValue( i_volume );
        b_my_volume = false;
    }
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}

void MainInterface::closeEvent( QCloseEvent *e )
{
    hide();
    p_intf->b_die = VLC_TRUE;
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}
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void MainInterface::updateVolume( int sliderVolume )
{
    if( !b_my_volume )
    {
        int i_res = sliderVolume * AOUT_VOLUME_MAX /
                            (2*ui.volumeSlider->maximum() );
        aout_VolumeSet( p_intf, i_res );
    }
}

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static int InteractCallback( vlc_object_t *p_this,
                             const char *psz_var, vlc_value_t old_val,
                             vlc_value_t new_val, void *param )
{
    intf_dialog_args_t *p_arg = new intf_dialog_args_t;
    p_arg->p_dialog = (interaction_dialog_t *)(new_val.p_address);
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    MainInterface *p_interface = (MainInterface*)param;
    DialogEvent *event = new DialogEvent( INTF_DIALOG_INTERACTION, 0, p_arg );
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    QApplication::postEvent( THEDP, static_cast<QEvent*>(event) );
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    return VLC_SUCCESS;
}