MainWindow.cpp 19 KB
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/*****************************************************************************
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 * MainWindow.cpp: VLMC MainWindow
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 *****************************************************************************
 * Copyright (C) 2008-2009 the VLMC team
 *
 * 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 "Library.h"
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#include "About.h"
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#include "ProjectManager.h"
#include "KeyboardShortcut.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"
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#include "ProjectPreferences.h"
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#include "VLMCPreferences.h"
#include "VLMCSettingsDefault.h"
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#include "AudioProjectPreferences.h"
#include "VideoProjectPreferences.h"
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#include "LanguagePreferences.h"
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#include "Settings.h"
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#include "SettingsManager.h"
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MainWindow::MainWindow( QWidget *parent ) :
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    QMainWindow( parent ), m_renderer( 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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    // Settings
    VLMCSettingsDefault::load( "default" );
    VLMCSettingsDefault::load( "VLMC" );
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    VLMCSettingsDefault::loadKeyboardShortcutDefaults();
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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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    // GUI
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    DockWidgetManager::instance( this )->setMainWindow( this );
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    initializeDockWidgets();
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    createStatusBar();
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    createGlobalPreferences();
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    createProjectPreferences();
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    initializeMenuKeyboardShortcut();
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#ifdef DEBUG_CRASHHANDLER
    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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    // Wizard
    m_pWizard = new ProjectWizard( this );
    m_pWizard->setModal( true );

    if ( restoreSession() == false )
    {
        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_renderer )
        delete m_renderer;
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    LibVLCpp::Instance::destroyInstance();
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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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void        MainWindow::setupLibrary()
{
    //GUI part :
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    MediaLibraryWidget* mediaLibraryWidget = new MediaLibraryWidget( this );
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    m_importController = new ImportController( this );
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    DockWidgetManager::instance()->addDockedWidget( mediaLibraryWidget,
                                                    tr( "Media Library" ),
                                                    Qt::AllDockWidgetAreas,
                                                    QDockWidget::AllDockWidgetFeatures,
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                                                    Qt::LeftDockWidgetArea );
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    connect( mediaLibraryWidget, SIGNAL( mediaSelected( Media* ) ),
             m_clipPreview->getGenericRenderer(), SLOT( setMedia( Media* ) ) );
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    connect( Library::getInstance(), SIGNAL( mediaRemoved( const QUuid& ) ),
             m_clipPreview->getGenericRenderer(), SLOT( mediaUnloaded( QUuid ) ) );
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    connect( mediaLibraryWidget, SIGNAL( importRequired() ), this, SLOT( on_actionImport_triggered() ) );
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    connect( m_clipPreview, SIGNAL( addClip( Clip* ) ), mediaLibraryWidget, SLOT( clipAdded( Clip* ) ) );
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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();
    pm->loadProject( pm->loadProjectFile() );
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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:
    KeyboardShortcutHelper* defaultModeShortcut = new KeyboardShortcutHelper( "Default mode", this );
    KeyboardShortcutHelper* cutModeShortcut = new KeyboardShortcutHelper( "Cut mode", this );
    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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    WorkflowRenderer*    workflowRenderer = new WorkflowRenderer();
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    workflowRenderer->initializeRenderer();
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    m_timeline = new Timeline( workflowRenderer, 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( "Launch media preview", this );
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    connect( clipShortcut, SIGNAL( activated() ), m_clipPreview, SLOT( on_pushButtonPlay_clicked() ) );
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    m_projectPreview = new PreviewWidget( workflowRenderer, 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( "Start render preview", this );
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    connect( renderShortcut, SIGNAL( activated() ), m_projectPreview, SLOT( on_pushButtonPlay_clicked() ) );
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    dockManager->addDockedWidget( UndoStack::getInstance( this ),
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                                  tr( "History" ),
                                  Qt::AllDockWidgetAreas,
                                  QDockWidget::AllDockWidgetFeatures,
                                  Qt::LeftDockWidgetArea );
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    setupLibrary();
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}

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void        MainWindow::createGlobalPreferences()
{
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    m_globalPreferences = new Settings( false, "VLMC", this );
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    m_globalPreferences->addWidget("VLMC",
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                                   new VLMCPreferences( m_globalPreferences ),
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                                   QIcon( ":/images/images/vlmc.png" ),
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                                   "VLMC settings");
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    m_globalPreferences->addWidget("Language preferences",
                                   new LanguagePreferences( m_globalPreferences ),
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                                   QIcon( ":/images/images/vlmc.png" ),
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                                   "Langage settings");
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    m_globalPreferences->addWidget( "Keyboard",
                                     new KeyboardShortcut( m_globalPreferences ),
                                     QIcon( ":/images/keyboard" ),
                                     tr( "Keyboard Settings" ) );
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}

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void	    MainWindow::createProjectPreferences()
{
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    m_projectPreferences = new Settings( false, "project", this );
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    m_projectPreferences->addWidget("Project",
                                   new ProjectPreferences,
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                                   QIcon( ":/images/images/vlmc.png" ),
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                                   "Project settings" );
    m_projectPreferences->addWidget( "Video",
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                                   new VideoProjectPreferences,
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                                   QIcon( ":/images/images/video.png" ),
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                                   "Video settings" );
    m_projectPreferences->addWidget( "Audio",
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                                   new AudioProjectPreferences,
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                                   QIcon( ":/images/images/audio.png" ),
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                                   "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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    {
        QMessageBox::warning( NULL, "VLMC Renderer", "There is nothing to render." );
        return ;
    }
    QString outputFileName =
            QFileDialog::getSaveFileName( NULL, "Enter the output file name",
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                                          QDir::currentPath(), "Videos(*.avi *.mpg)" );
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    if ( outputFileName.length() == 0 )
        return ;
    else
    {
        if ( m_renderer )
            delete m_renderer;
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        m_renderer = new WorkflowFileRenderer( outputFileName );
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        m_renderer->initializeRenderer();
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        m_renderer->run();
    }
}

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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( "project" );
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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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#define INIT_SHORTCUT( instName, shortcutName, actionInstance )      \
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            const SettingValue* instName = SettingsManager::getInstance()->getValue( "keyboard_shortcut", shortcutName );\
            KeyboardShortcutHelper* helper##instName = new KeyboardShortcutHelper( shortcutName, this, true ); \
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            connect( helper##instName, SIGNAL( changed( const QString&, const QString&) ), this, SLOT( keyboardShortcutChanged(QString,QString)) ); \
            m_ui.actionInstance->setShortcut( instName->get().toString() );
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void    MainWindow::initializeMenuKeyboardShortcut()
{
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    INIT_SHORTCUT( help, "Help", actionHelp );
    INIT_SHORTCUT( quit, "Quit", actionQuit );
    INIT_SHORTCUT( preferences, "Preferences", actionPreferences );
    INIT_SHORTCUT( fullscreen, "Fullscreen", actionFullscreen );
    INIT_SHORTCUT( newProject, "New project", actionNew_Project );
    INIT_SHORTCUT( openProject, "Open project", actionLoad_Project );
    INIT_SHORTCUT( save, "Save", actionSave );
    INIT_SHORTCUT( saveAs, "Save as", actionSave_As );
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    INIT_SHORTCUT( closeProject, "Close project", actionClose_Project );
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    INIT_SHORTCUT( importProject, "Import media", actionImport );
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}

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#undef INIT_SHORTCUT

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void    MainWindow::keyboardShortcutChanged( const QString& name, const QString& val )
{
    qDebug() << "shortcut" << name << "changed to" << val;
    if ( name == "Help" )
        m_ui.actionHelp->setShortcut( val );
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    else if ( name == "Quit" )
        m_ui.actionQuit->setShortcut( val );
    else if ( name == "Preferences" )
        m_ui.actionPreferences->setShortcut( val );
    else if ( name == "Fullscreen" )
        m_ui.actionFullscreen->setShortcut( val );
    else if ( name == "New project" )
        m_ui.actionNew_Project->setShortcut( val );
    else if ( name == "Open project" )
        m_ui.actionLoad_Project->setShortcut( val );
    else if ( name == "Save" )
        m_ui.actionSave->setShortcut( val );
    else if ( name == "Save as" )
        m_ui.actionSave_As->setShortcut( val );
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    else if ( name == "Close project" )
        m_ui.actionClose_Project->setShortcut( val );
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    else if ( name == "Import media" )
        m_ui.actionImport->setShortcut( val );
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    else
        qWarning() << "Unknown shortcut:" << name;
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}
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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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#ifdef DEBUG_CRASHHANDLER
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