MainWindow.cpp 20.9 KB
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/*****************************************************************************
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 * MainWindow.cpp: VLMC MainWindow
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 *****************************************************************************
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 * Copyright (C) 2008-2010 VideoLAN
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 *
 * Authors: Ludovic Fauvet <etix@l0cal.com>
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 *          Hugo Beauzee-Luyssen <beauze.h@gmail.com>
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 *
 * 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 <QSizePolicy>
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#include <QDockWidget>
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#include <QFileDialog>
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#include <QSlider>
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#include <QMessageBox>
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#include <QDesktopServices>
#include <QUrl>
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#include <QSettings>
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#include "MainWindow.h"
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#include "config.h"
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#include "Library.h"
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#include "About.h"
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#include "ProjectManager.h"
#include "VlmcDebug.h"

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#include "MainWorkflow.h"
#include "WorkflowFileRenderer.h"
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#include "WorkflowRenderer.h"
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#include "ClipRenderer.h"
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#include "EffectsEngine.h"
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/* Widgets */
#include "DockWidgetManager.h"
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#include "UndoStack.h"
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#include "PreviewWidget.h"
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#include "MediaLibraryWidget.h"
#include "timeline/Timeline.h"
#include "timeline/TracksView.h"
#include "ImportController.h"

/* Settings / Preferences */
#include "ProjectManager.h"
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#include "ProjectWizard.h"
#include "Settings.h"
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#include "SettingsManager.h"
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#include "LanguageHelper.h"
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/* VLCpp */
#include "VLCInstance.h"

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MainWindow::MainWindow( QWidget *parent ) :
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    QMainWindow( parent ), m_fileRenderer( NULL )
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{
    m_ui.setupUi( this );
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    qRegisterMetaType<MainWorkflow::TrackType>( "MainWorkflow::TrackType" );
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    qRegisterMetaType<MainWorkflow::FrameChangedReason>( "MainWorkflow::FrameChangedReason" );
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    qRegisterMetaType<QVariant>( "QVariant" );
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    //We only install message handler here cause it uses configuration.
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//    VlmcDebug::getInstance()->setup();
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    //VLC Instance:
    LibVLCpp::Instance::getInstance( this );

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    //Creating the project manager first (so it can create all the project variables)
    ProjectManager::getInstance();

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    //Preferences
    initVlmcPreferences();

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    // GUI
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    DockWidgetManager::instance( this )->setMainWindow( this );
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    createGlobalPreferences();
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    createProjectPreferences();
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    initializeDockWidgets();
    createStatusBar();
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#ifdef WITH_CRASHBUTTON
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    setupCrashTester();
#endif
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    // Translations
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    connect( this, SIGNAL( translateDockWidgetTitle() ),
             DockWidgetManager::instance(), SLOT( transLateWidgetTitle() ) );
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    // Zoom
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    connect( m_zoomSlider, SIGNAL( valueChanged( int ) ),
             m_timeline, SLOT( changeZoom( int ) ) );
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    connect( m_timeline->tracksView(), SIGNAL( zoomIn() ),
             this, SLOT( zoomIn() ) );
    connect( m_timeline->tracksView(), SIGNAL( zoomOut() ),
             this, SLOT( zoomOut() ) );
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    connect( this, SIGNAL( toolChanged( ToolButtons ) ),
             m_timeline, SLOT( setTool( ToolButtons ) ) );
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    connect( ProjectManager::getInstance(), SIGNAL( projectUpdated( const QString&, bool ) ),
             this, SLOT( projectUpdated( const QString&, bool ) ) );
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    // Undo/Redo
    connect( UndoStack::getInstance( this ), SIGNAL( canRedoChanged( bool ) ),
             this, SLOT( canRedoChanged( bool ) ) );
    connect( UndoStack::getInstance( this ), SIGNAL( canUndoChanged( bool ) ),
             this, SLOT( canUndoChanged( bool ) ) );
    canRedoChanged( UndoStack::getInstance( this )->canRedo() );
    canUndoChanged( UndoStack::getInstance( this )->canUndo() );


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    // Wizard
    m_pWizard = new ProjectWizard( this );
    m_pWizard->setModal( true );

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    QSettings s;
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    if ( s.value( "ShowWizardStartup", true ).toBool() )
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    {
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#ifdef WITH_CRASHHANDLER
            if ( restoreSession() == false )
                return ;
#endif
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        m_pWizard->show();
    }
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}

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MainWindow::~MainWindow()
{
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    QSettings s;
    // Save the current geometry
    s.setValue( "MainWindowGeometry", saveGeometry() );
    // Save the current layout
    s.setValue( "MainWindowState", saveState() );
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    s.setValue( "CleanQuit", true );
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    s.sync();

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    if ( m_fileRenderer )
        delete m_fileRenderer;
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    delete m_importController;
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}

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void MainWindow::changeEvent( QEvent *e )
{
    switch ( e->type() )
    {
    case QEvent::LanguageChange:
        m_ui.retranslateUi( this );
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        emit translateDockWidgetTitle();
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        break;
    default:
        break;
    }
}

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//use this helper when the shortcut is binded to a menu action
#define CREATE_MENU_SHORTCUT( key, defaultValue, name, desc, actionInstance  )       \
        VLMC_CREATE_PREFERENCE_KEYBOARD( key, defaultValue, name, desc );    \
        KeyboardShortcutHelper  *helper##actionInstance = new KeyboardShortcutHelper( key, m_ui.actionInstance, this );

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void
MainWindow::initVlmcPreferences()
{
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    VLMC_CREATE_PREFERENCE_KEYBOARD( "keyboard/defaultmode", "n", "Select mode", "Select the selection tool in the timeline" );
    VLMC_CREATE_PREFERENCE_KEYBOARD( "keyboard/cutmode", "x", "Cut mode", "Select the cut/razor tool in the timeline" );
    VLMC_CREATE_PREFERENCE_KEYBOARD( "keyboard/mediapreview", "Ctrl+Return", "Media preview", "Preview the selected media, or pause the current preview" );
    VLMC_CREATE_PREFERENCE_KEYBOARD( "keyboard/renderpreview", "Space", "Render preview", "Preview the project, or pause the current preview" );
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    //A bit nasty, but we better use what Qt's providing as default shortcut
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    CREATE_MENU_SHORTCUT( "keyboard/undo", QKeySequence( QKeySequence::Undo ).toString().toLocal8Bit(), "Undo", "Undo the last action", actionUndo );
    CREATE_MENU_SHORTCUT( "keyboard/redo", QKeySequence( QKeySequence::Redo ).toString().toLocal8Bit(), "Redo", "Redo the last action", actionRedo );
    CREATE_MENU_SHORTCUT( "keyboard/help", QKeySequence( QKeySequence::HelpContents ).toString().toLocal8Bit(), "Help", "Toggle the help page", actionHelp );
    CREATE_MENU_SHORTCUT( "keyboard/quit", "Ctrl+Q", "Quit", "Quit VLMC", actionQuit );
    CREATE_MENU_SHORTCUT( "keyboard/preferences", "Alt+P", "Preferences", "Open VLMC preferences", actionPreferences );
    CREATE_MENU_SHORTCUT( "keyboard/fullscreen", "F", "Fullscreen", "Switch to fullscreen mode", actionFullscreen );
    CREATE_MENU_SHORTCUT( "keyboard/newproject", QKeySequence( QKeySequence::New ).toString().toLocal8Bit(), "New project", "Open the new project wizzard", actionNew_Project );
    CREATE_MENU_SHORTCUT( "keyboard/openproject", QKeySequence( QKeySequence::Open ).toString().toLocal8Bit(), "Open a project", "Open an existing project", actionLoad_Project );
    CREATE_MENU_SHORTCUT( "keyboard/save", QKeySequence( QKeySequence::Save ).toString().toLocal8Bit(), "Save", "Save the current project", actionSave );
    CREATE_MENU_SHORTCUT( "keyboard/saveas", "Ctrl+Shift+S", "Save as", "Save the current project to a new file", actionSave_As );
    CREATE_MENU_SHORTCUT( "keyboard/closeproject", QKeySequence( QKeySequence::Close ).toString().toLocal8Bit(), "Close the project", "Close the current project", actionClose_Project );
    CREATE_MENU_SHORTCUT( "keyboard/importmedia", "Ctrl+I", "Import media", "Open the import window", actionImport );
    CREATE_MENU_SHORTCUT( "keyboard/renderproject", "Ctrl+R", "Render the project", "Render the project to a file", actionRender );
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    VLMC_CREATE_PREFERENCE_LANGUAGE( "general/VLMCLang", "en_US", "Langage", "The VLMC's UI language" );
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    SettingsManager::getInstance()->watchValue( "general/VLMCLang",
                                                LanguageHelper::getInstance(),
                                                SLOT( languageChanged( const QVariant& ) ),
                                                SettingsManager::Vlmc );
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    //Load saved preferences :
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    QSettings       s;
    if ( s.value( "VlmcVersion" ).toString() != PROJECT_VERSION )
        s.clear();
    else
    {
        loadVlmcPreferences( "keyboard" );
        loadVlmcPreferences( "general" );
    }
    s.setValue( "VlmcVersion", PROJECT_VERSION );
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}

void
MainWindow::loadVlmcPreferences( const QString &subPart )
{
    QSettings       s;
    s.beginGroup( subPart );
    foreach ( QString key, s.allKeys() )
    {
        SettingsManager::getInstance()->setValue( subPart + "/" + key, s.value( key ),
                                                  SettingsManager::Vlmc );
    }
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}

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#undef CREATE_MENU_SHORTCUT

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void        MainWindow::setupLibrary()
{
    //GUI part :
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    MediaLibraryWidget* mediaLibraryWidget = new MediaLibraryWidget( this );
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    m_importController = new ImportController();
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    const ClipRenderer* clipRenderer = qobject_cast<const ClipRenderer*>( m_clipPreview->getGenericRenderer() );
    Q_ASSERT( clipRenderer != NULL );
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    DockWidgetManager::instance()->addDockedWidget( mediaLibraryWidget,
                                                    tr( "Media Library" ),
                                                    Qt::AllDockWidgetAreas,
                                                    QDockWidget::AllDockWidgetFeatures,
                                                    Qt::LeftDockWidgetArea );
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    connect( mediaLibraryWidget, SIGNAL( clipSelected( Clip* ) ),
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             clipRenderer, SLOT( setClip( Clip* ) ) );
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    connect( Library::getInstance(), SIGNAL( clipRemoved( const Clip* ) ),
             clipRenderer, SLOT( clipUnloaded( const Clip* ) ) );
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    connect( mediaLibraryWidget, SIGNAL( importRequired() ),
             this, SLOT( on_actionImport_triggered() ) );
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}

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void    MainWindow::on_actionSave_triggered()
{
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    ProjectManager::getInstance()->saveProject();
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}

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void    MainWindow::on_actionSave_As_triggered()
{
    ProjectManager::getInstance()->saveProject( true );
}

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void    MainWindow::on_actionLoad_Project_triggered()
{
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    ProjectManager* pm = ProjectManager::getInstance();
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    pm->loadProject( pm->acquireProjectFileName() );
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}

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void MainWindow::createStatusBar()
{
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    // Mouse (default) tool
    QToolButton* mouseTool = new QToolButton( this );
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    mouseTool->setAutoRaise( true );
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    mouseTool->setCheckable( true );
    mouseTool->setIcon( QIcon( ":/images/mouse" ) );
    m_ui.statusbar->addPermanentWidget( mouseTool );

    // Cut/Split tool
    QToolButton* splitTool = new QToolButton( this );
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    splitTool->setAutoRaise( true );
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    splitTool->setCheckable( true );
    splitTool->setIcon( QIcon( ":/images/editcut" ) );
    m_ui.statusbar->addPermanentWidget( splitTool );

    // Group the two previous buttons
    QButtonGroup* toolButtonGroup = new QButtonGroup( this );
    toolButtonGroup->addButton( mouseTool, TOOL_DEFAULT);
    toolButtonGroup->addButton( splitTool, TOOL_CUT );
    toolButtonGroup->setExclusive( true );
    mouseTool->setChecked( true );

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    //Shortcut part:
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    KeyboardShortcutHelper* defaultModeShortcut = new KeyboardShortcutHelper( "keyboard/defaultmode", this );
    KeyboardShortcutHelper* cutModeShortcut = new KeyboardShortcutHelper( "keyboard/cutmode", this );
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    connect( defaultModeShortcut, SIGNAL( activated() ), mouseTool, SLOT( click() ) );
    connect( cutModeShortcut, SIGNAL( activated() ), splitTool, SLOT( click() ) );

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    connect( toolButtonGroup, SIGNAL( buttonClicked( int ) ),
             this, SLOT( toolButtonClicked( int ) ) );

    // Spacer
    QWidget* spacer = new QWidget( this );
    spacer->setFixedWidth( 20 );
    m_ui.statusbar->addPermanentWidget( spacer );

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    // Zoom Out
    QToolButton* zoomOutButton = new QToolButton( this );
    zoomOutButton->setIcon( QIcon( ":/images/zoomout" ) );
    m_ui.statusbar->addPermanentWidget( zoomOutButton );
    connect( zoomOutButton, SIGNAL( clicked() ),
             this, SLOT( zoomOut() ) );
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    // Zoom slider
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    m_zoomSlider = new QSlider( this );
    m_zoomSlider->setOrientation( Qt::Horizontal );
    m_zoomSlider->setTickInterval( 1 );
    m_zoomSlider->setSingleStep( 1 );
    m_zoomSlider->setPageStep( 1 );
    m_zoomSlider->setMinimum( 0 );
    m_zoomSlider->setMaximum( 13 );
    m_zoomSlider->setValue( 10 );
    m_zoomSlider->setFixedWidth( 80 );
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    m_zoomSlider->setInvertedAppearance( true );
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    m_ui.statusbar->addPermanentWidget( m_zoomSlider );
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    // Zoom IN
    QToolButton* zoomInButton = new QToolButton( this );
    zoomInButton->setIcon( QIcon( ":/images/zoomin" ) );
    m_ui.statusbar->addPermanentWidget( zoomInButton );
    connect( zoomInButton, SIGNAL( clicked() ),
             this, SLOT( zoomIn() ) );
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}

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void MainWindow::initializeDockWidgets( void )
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{
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    m_renderer = new WorkflowRenderer();
    m_renderer->initializeRenderer();
    m_timeline = new Timeline( m_renderer, this );
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    m_timeline->setSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
    m_timeline->show();
    setCentralWidget( m_timeline );
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    DockWidgetManager *dockManager = DockWidgetManager::instance();

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    m_clipPreview = new PreviewWidget( new ClipRenderer, this );
    dockManager->addDockedWidget( m_clipPreview,
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                                  tr( "Clip Preview" ),
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                                  Qt::AllDockWidgetAreas,
                                  QDockWidget::AllDockWidgetFeatures,
                                  Qt::TopDockWidgetArea );
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    KeyboardShortcutHelper* clipShortcut = new KeyboardShortcutHelper( "keyboard/mediapreview", this );
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    connect( clipShortcut, SIGNAL( activated() ), m_clipPreview, SLOT( on_pushButtonPlay_clicked() ) );
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    m_projectPreview = new PreviewWidget( m_renderer, this );
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    dockManager->addDockedWidget( m_projectPreview,
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                                  tr( "Project Preview" ),
                                  Qt::AllDockWidgetAreas,
                                  QDockWidget::AllDockWidgetFeatures,
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                                  Qt::TopDockWidgetArea );
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    KeyboardShortcutHelper* renderShortcut = new KeyboardShortcutHelper( "keyboard/renderpreview", this );
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    connect( renderShortcut, SIGNAL( activated() ), m_projectPreview, SLOT( on_pushButtonPlay_clicked() ) );
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    QDockWidget* dock = dockManager->addDockedWidget( UndoStack::getInstance( this ),
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                                  tr( "History" ),
                                  Qt::AllDockWidgetAreas,
                                  QDockWidget::AllDockWidgetFeatures,
                                  Qt::LeftDockWidgetArea );
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    if ( dock != 0 )
        dock->hide();
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    setupLibrary();
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}

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void        MainWindow::createGlobalPreferences()
{
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    m_globalPreferences = new Settings( SettingsManager::Vlmc, this );
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    m_globalPreferences->addCategorie( "general", SettingsManager::Vlmc,
                                   QIcon( ":/images/images/vlmc.png" ),
                                   tr ( "VLMC settings" ) );
    m_globalPreferences->addCategorie( "keyboard", SettingsManager::Vlmc,
                                     QIcon( ":/images/keyboard" ),
                                     tr( "Keyboard Settings" ) );
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}

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void    MainWindow::createProjectPreferences()
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{
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    m_projectPreferences = new Settings( SettingsManager::Project, this );
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    m_projectPreferences->addCategorie( "general", SettingsManager::Project,
                                   QIcon( ":/images/images/vlmc.png" ),
                                   tr ( "Project settings" ) );
    m_projectPreferences->addCategorie( "video", SettingsManager::Project,
                                   QIcon( ":/images/images/video.png" ),
                                   tr ( "Video settings" ) );
    m_projectPreferences->addCategorie( "audio", SettingsManager::Project,
                                   QIcon( ":/images/images/audio.png" ),
                                   tr ( "Audio settings" ) );
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}

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//Private slots definition

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void MainWindow::on_actionQuit_triggered()
{
    QApplication::quit();
}
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void MainWindow::on_actionPreferences_triggered()
{
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   m_globalPreferences->show();
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}
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void MainWindow::on_actionAbout_triggered()
{
    About::instance()->exec();
}
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void MainWindow::on_actionTranscode_triggered()
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{
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    QMessageBox::information( this, tr( "Sorry" ),
                              tr( "This feature is currently disabled." ) );
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    //Transcode::instance( this )->exec();
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}
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void    MainWindow::on_actionRender_triggered()
{
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    if ( MainWorkflow::getInstance()->getLengthFrame() <= 0 )
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    {
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        QMessageBox::warning( NULL, tr ( "VLMC Renderer" ), tr( "There is nothing to render." ) );
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        return ;
    }
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    else
    {
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        m_renderer->killRenderer();
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        if ( m_fileRenderer )
            delete m_fileRenderer;
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        m_fileRenderer = new WorkflowFileRenderer();
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        m_fileRenderer->initializeRenderer();
        m_fileRenderer->run();
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    }
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}

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void MainWindow::on_actionNew_Project_triggered()
{
    //TODO : clear the library, the timeline, and show the configuration box
    //of the newly created project
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    m_pWizard->restart();
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    m_pWizard->show();
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}

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void    MainWindow::on_actionHelp_triggered()
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{
    QDesktopServices::openUrl( QUrl( "http://vlmc.org" ) );
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}

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void    MainWindow::zoomIn()
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{
    m_zoomSlider->setValue( m_zoomSlider->value() - 1 );
}

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void    MainWindow::zoomOut()
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{
    m_zoomSlider->setValue( m_zoomSlider->value() + 1 );
}
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void    MainWindow::on_actionFullscreen_triggered( bool checked )
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{
    if ( checked )
        showFullScreen();
    else
        showNormal();
}
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void    MainWindow::registerWidgetInWindowMenu( QDockWidget* widget )
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{
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    m_ui.menuWindow->addAction( widget->toggleViewAction() );
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}
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void    MainWindow::toolButtonClicked( int id )
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{
    emit toolChanged( (ToolButtons)id );
}
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void MainWindow::on_actionBypass_effects_engine_toggled(bool toggled)
{
    EffectsEngine*  ee;

    ee = MainWorkflow::getInstance()->getEffectsEngine();
    if (toggled)
        ee->enable();
    else
       ee->disable();
    return ;
}
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void MainWindow::on_actionProject_Preferences_triggered()
{
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  m_projectPreferences->show();
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}
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void    MainWindow::closeEvent( QCloseEvent* e )
{
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    if ( ProjectManager::getInstance()->askForSaveIfModified() )
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        e->accept();
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    else
        e->ignore();
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}
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void    MainWindow::projectUpdated( const QString& projectName, bool savedStatus )
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{
    QString title = tr( "VideoLAN Movie Creator" );
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    title += " - ";
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    title += projectName;
    if ( savedStatus == false )
        title += " *";
    setWindowTitle( title );
}
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void    MainWindow::on_actionClose_Project_triggered()
{
    ProjectManager::getInstance()->closeProject();
}

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void    MainWindow::on_actionUndo_triggered()
{
    UndoStack::getInstance( this )->undo();
}

void    MainWindow::on_actionRedo_triggered()
{
    UndoStack::getInstance( this )->redo();
}

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void    MainWindow::on_actionCrash_triggered()
{
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    //WARNING: read this part at your own risk !!
    //I'm not responsible if you puke while reading this :D
    QString str;
    int test = 1 / str.length();
    Q_UNUSED( test );
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}
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bool    MainWindow::restoreSession()
{
    QSettings   s;
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    bool        fileCreated = false;
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    bool        ret = false;

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    fileCreated = s.contains( "VlmcVersion" );
    if ( fileCreated == true )
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    {
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        bool        cleanQuit = s.value( "CleanQuit", false ).toBool();

        // Restore the geometry
        restoreGeometry( s.value( "MainWindowGeometry" ).toByteArray() );
        // Restore the layout
        restoreState( s.value( "MainWindowState" ).toByteArray() );

        if ( cleanQuit == false )
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        {
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            QMessageBox::StandardButton res = QMessageBox::question( this, tr( "Crash recovery" ), tr( "VLMC didn't closed nicely. Do you wan't to recover your project ?" ),
                                   QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes );
            if ( res == QMessageBox::Yes )
            {
                if ( ProjectManager::getInstance()->loadEmergencyBackup() == true )
                    ret = true;
                else
                    QMessageBox::warning( this, tr( "Can't restore project" ), tr( "VLMC didn't manage to restore your project. We appology for the inconvenience" ) );
            }
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        }
    }
    s.setValue( "CleanQuit", false );
    s.sync();
    return ret;
}
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void    MainWindow::on_actionImport_triggered()
{
    m_importController->exec();
}
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void    MainWindow::canUndoChanged( bool canUndo )
{
    m_ui.actionUndo->setEnabled( canUndo );
}

void    MainWindow::canRedoChanged( bool canRedo )
{
    m_ui.actionRedo->setEnabled( canRedo );
}

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#ifdef WITH_CRASHBUTTON
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void    MainWindow::setupCrashTester()
{
    QAction* actionCrash = new QAction( this );
    actionCrash->setObjectName( QString::fromUtf8( "actionCrash" ) );
    m_ui.menuTools->addAction( actionCrash );
    actionCrash->setText( QApplication::translate( "MainWindow", "Crash", 0, QApplication::UnicodeUTF8 ) );
    connect( actionCrash, SIGNAL( triggered( bool ) ), this, SLOT( on_actionCrash_triggered() ) );
}
#endif
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