/*************************************************************************** * copyright            : (C) 2005 Seb Ruiz <me@sebruiz.net>               * **************************************************************************//*************************************************************************** *                                                                         * *   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.                                   * *                                                                         * ***************************************************************************/#define DEBUG_PREFIX "QueueManager"#include "debug.h"#include "amarok.h"#include "amarokconfig.h"     //check if dynamic mode#include "playlist.h"#include "queuemanager.h"#include <kapplication.h>#include <kguiitem.h>#include <klocale.h>#include <kpushbutton.h>#include <kurldrag.h>#include <kwin.h>#include <qpainter.h>#include <qptrlist.h>#include <qsimplerichtext.h>#include <qtooltip.h>#include <qvbox.h>///////////////////////////////////////////////////////////////////////////////////////////// CLASS QueueItem//////////////////////////////////////////////////////////////////////////////////////////voidQueueItem::paintCell( QPainter *p, const QColorGroup &cg, int column, int width, int align ){    KListViewItem::paintCell( p, cg, column, width, align );    QString str = QString::number( ( static_cast<KListView *>( listView() ) )->itemIndex( this ) + 1 );    //draw the symbol's outline          uint fw = p->fontMetrics().width( str ) + 2;    const uint w  = 16; //keep this even    const uint h  = height() - 2;    p->setBrush( cg.highlight() );    p->setPen( cg.highlight().dark() ); //TODO blend with background color    p->drawEllipse( width - fw - w/2, 1, w, h );    p->drawRect( width - fw, 1, fw, h );    p->setPen( cg.highlight() );    p->drawLine( width - fw, 2, width - fw, h - 1 );    fw += 2; //add some more padding    p->setPen( cg.highlightedText() );    p->drawText( width - fw, 2, fw, h-1, Qt::AlignCenter, str );}///////////////////////////////////////////////////////////////////////////////////////////// CLASS QueueList//////////////////////////////////////////////////////////////////////////////////////////QueueList::QueueList( QWidget *parent, const char *name )            : KListView( parent, name ){    addColumn( i18n("Name") );    setResizeMode( QListView::LastColumn );    setSelectionMode( QListView::Extended );    setSorting( -1 );    setAcceptDrops( true );    setDragEnabled( true );    setDropVisualizer( true );    //the visualizer (a line marker) is drawn when dragging over tracks    setDropVisualizerWidth( 3 );}voidQueueList::viewportPaintEvent( QPaintEvent *e ){    if( e ) KListView::viewportPaintEvent( e );    if( !childCount() && e )    {        QPainter p( viewport() );        QString minimumText(i18n(                "<div align=center>"                "<h3>The Queue Manager</h3>"                    "To create a queue, "                    "<b>drag</b> tracks from the playlist, and "                    "<b>drop</b> them here.<br><br>"                    "Drag and drop tracks within the manager to resort queue orders."                "</div>" ) );        QSimpleRichText t( minimumText, QApplication::font() );        if ( t.width()+30 >= viewport()->width() || t.height()+30 >= viewport()->height() )            //too big, giving up            return;        const uint w = t.width();        const uint h = t.height();        const uint x = (viewport()->width() - w - 30) / 2 ;        const uint y = (viewport()->height() - h - 30) / 2 ;        p.setBrush( colorGroup().background() );        p.drawRoundRect( x, y, w+30, h+30, (8*200)/w, (8*200)/h );        t.draw( &p, x+15, y+15, QRect(), colorGroup() );    }}voidQueueList::keyPressEvent( QKeyEvent *e ){    switch( e->key() ) {        case Key_Delete:    //remove            removeSelected();            break;        case CTRL+Key_Up:            moveSelectedUp();            break;        case CTRL+Key_Down:            moveSelectedDown();            break;    }}boolQueueList::hasSelection(){    QListViewItemIterator it( this, QListViewItemIterator::Selected );    if( !it.current() )        return false;    return true;}QPtrList<QListViewItem>QueueList::selectedItems(){    QPtrList<QListViewItem> selected;    QListViewItemIterator it( this, QListViewItemIterator::Selected );    for( ; it.current(); ++it )        selected.append( it.current() );    return selected;}voidQueueList::moveSelectedUp() // SLOT{    QPtrList<QListViewItem> selected = selectedItems();    bool item_moved = false;    // Whilst it would be substantially faster to do this: ((*it)->itemAbove())->move( *it ),    // this would only work for sequentially ordered items    for( QListViewItem *item = selected.first(); item; item = selected.next() )    {        if( item == itemAtIndex(0) )            continue;        QListViewItem *after;        item == itemAtIndex(1) ?            after = 0:            after = ( item->itemAbove() )->itemAbove();        moveItem( item, 0, after );        item_moved = true;    }    ensureItemVisible( selected.first() );    if( item_moved )        emit changed();}voidQueueList::moveSelectedDown() // SLOT{    QPtrList<QListViewItem> list = selectedItems();    bool item_moved = false;    for( QListViewItem *item  = list.last(); item; item = list.prev() )    {        QListViewItem *after = item->nextSibling();        if( !after )            continue;        moveItem( item, 0, after );        item_moved = true;    }    ensureItemVisible( list.last() );    if( item_moved )        emit changed();}voidQueueList::removeSelected() //SLOT{    setSelected( currentItem(), true );    bool item_removed = false;    QPtrList<QListViewItem> selected = selectedItems();    for( QListViewItem *item = selected.first(); item; item = selected.next() )    {        delete item;        item_removed = true;    }    if( isEmpty() )        QueueManager::instance()->updateButtons();    if( item_removed )        emit changed();}voidQueueList::clear() // SLOT{    KListView::clear();    emit changed();}voidQueueList::contentsDragEnterEvent( QDragEnterEvent *e ){    debug() << "contentsDrageEnterEvent()" << endl;    e->accept( e->source() == reinterpret_cast<KListView*>( Playlist::instance() )->viewport() );}voidQueueList::contentsDragMoveEvent( QDragMoveEvent *e ){    debug() << "contentsDrageMoveEvent()" << endl;    KListView::contentsDragMoveEvent( e );    // Must be overloaded for dnd to work    e->accept( ( e->source() == reinterpret_cast<KListView*>( Playlist::instance() )->viewport() ) ||                 e->source() == viewport() );}voidQueueList::contentsDropEvent( QDropEvent *e ){    debug() << "contentsDragDropEvent()" << endl;    if( e->source() == viewport() )    {        KListView::contentsDropEvent( e );        emit changed();    }    else    {        QListViewItem *parent = 0;        QListViewItem *after;        findDrop( e->pos(), parent, after );