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125 lines
3.6 KiB
125 lines
3.6 KiB
/*****************************************************************************
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* QMenuView
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****************************************************************************
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* Copyright © 2011 VLC authors and VideoLAN
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*
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* Authors: Jean-Baptiste Kempf <jb@videolan.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#include "qt.hpp"
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#include "util/qmenuview.hpp"
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#include "components/playlist/vlc_model.hpp" /* data( IsCurrentRole ) */
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#include <QFont>
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#include <QVariant>
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#include <assert.h>
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/***
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* This is a simple view, like a QListView, but displayed as a QMenu
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* So far, this is quite limited.
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*
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* This is now linked to VLC's models. It should be splittable in the future.
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*
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* TODO: - limit the width of the entries
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* - deal with a root item
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***/
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Q_DECLARE_METATYPE(QPersistentModelIndex); // So we can store it in a QVariant
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QMenuView::QMenuView( QWidget * parent, int _iMaxVisibleCount )
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: QMenu( parent ), iMaxVisibleCount( _iMaxVisibleCount )
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{
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m_model = NULL;
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/* Rebuild the Menu just before showing it */
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CONNECT( this, aboutToShow(), this, rebuild() );
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/* */
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CONNECT( this, triggered(QAction*), this, activate(QAction*) );
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}
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/* */
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void QMenuView::rebuild()
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{
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if( !m_model )
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return;
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/* Clear all Items */
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clear();
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/* Rebuild from root */
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build( QModelIndex() );
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if( isEmpty() )
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addAction( qtr( "Empty" ) )->setDisabled( true );
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}
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/* */
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void QMenuView::build( const QModelIndex &parent )
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{
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int i_count = iMaxVisibleCount == 0 ? m_model->rowCount( parent )
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: __MIN( iMaxVisibleCount, m_model->rowCount( parent ) );
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for( int i = 0; i < i_count; i++ )
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{
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QModelIndex idx = m_model->index(i, 0, parent);
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if( m_model->hasChildren( idx ) )
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{
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build( idx );
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}
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else
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{
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addAction( createActionFromIndex( idx ) );
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}
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}
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}
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/* Create individual actions */
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QAction* QMenuView::createActionFromIndex( QModelIndex index )
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{
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QIcon icon = qvariant_cast<QIcon>( index.data( Qt::DecorationRole ) );
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QAction * action = new QAction( icon, index.data().toString(), this );
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/* Display in bold the active element */
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if( index.data( VLCModel::CURRENT_ITEM_ROLE ).toBool() )
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{
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QFont font; font.setBold ( true );
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action->setFont( font );
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}
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/* Some items could be hypothetically disabled */
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action->setEnabled( index.flags().testFlag( Qt::ItemIsEnabled ) );
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/* */
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QVariant variant; variant.setValue( QPersistentModelIndex( index ) );
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action->setData( variant );
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return action;
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}
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/* QMenu action trigger */
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void QMenuView::activate( QAction* action )
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{
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assert( m_model );
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QVariant variant = action->data();
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if( variant.canConvert<QPersistentModelIndex>() )
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{
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emit activated( variant.value<QPersistentModelIndex>());
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}
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}
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