TracksScene.cpp 2.94 KB
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/*****************************************************************************
 * TracksScene.cpp: QGraphicsScene that contains the tracks
 *****************************************************************************
 * Copyright (C) 2008-2009 the VLMC team
 *
 * Authors: Ludovic Fauvet <etix@l0cal.com>
 *
 * 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 <QMessageBox>
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#include "TracksScene.h"
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#include "Commands.h"
#include "GraphicsMovieItem.h"
#include "Timeline.h"
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TracksScene::TracksScene( QObject* parent ) : QGraphicsScene( parent )
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{
}
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void TracksScene::keyPressEvent( QKeyEvent* keyEvent )
{
    TracksView* tv = Timeline::getInstance()->tracksView();
    if ( !tv ) return;

    if ( keyEvent->modifiers() == Qt::NoModifier &&
         keyEvent->key() == Qt::Key_Delete &&
         selectedItems().size() >= 1 )
    {
        // Items deletion
        keyEvent->accept();

        QString message;
        if ( selectedItems().size() == 1 )
            message = tr("Confirm the deletion of the region ?");
        else
            message = tr("Confirm the deletion of those regions ?");

        QMessageBox::StandardButton b =
        QMessageBox::warning( tv, "Object deletion",
                              message,
                              QMessageBox::Yes | QMessageBox::No,
                              QMessageBox::No );

        // Skip the deletion process
        if ( b == QMessageBox::No ) return;

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        QVector<Commands::MainWorkflow::ClipActionInfo> clipsinfos;

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        QList<QGraphicsItem*> items = selectedItems();
        for (int i = 0; i < items.size(); ++i )
        {
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            GraphicsMovieItem* item = qgraphicsitem_cast<GraphicsMovieItem*>( items.at(i) );
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            if ( !item ) return;
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            Commands::MainWorkflow::ClipActionInfo ai;
            ai.clip = item->clip();
            ai.trackNumber = item->trackNumber();
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            ai.pos = item->startPos();
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            ai.trackType = MainWorkflow::VideoTrack;
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            clipsinfos.append( ai );
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        }
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        Commands::trigger( new Commands::MainWorkflow::RemoveClips( tv->m_renderer,
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                                                                    clipsinfos ) );
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    }

    QGraphicsScene::keyPressEvent( keyEvent );
}