src/meta/meta.cpp

   1 /* This file is part of the KDE project
   2    Copyright (C) 2007 Maximilian Kossick <maximilian.kossick@googlemail.com>
   3    Copyright (C) 2007 Ian Monroe <ian@monroe.nu>
   4
   5    This program is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU General Public License
   7    as published by the Free Software Foundation; either version 2
   8    of the License, or (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
  18 */
  19
  20 #include "meta.h"
  21
  22 #include "amarok.h"
  23 #include "amarokconfig.h"
  24 #include "collection.h"
  25 #include "querymaker.h"
  26
  27 #include <QDir>
  28 #include <QImage>
  29
  30 #include <KStandardDirs>
  31
  32 //Meta::Observer
  33
  34 Meta::Observer::~Observer()
  35 {
  36     //nothing to do
  37 }
  38
  39 void
  40 Meta::Observer::metadataChanged( Track *track )
  41 {
  42     Q_UNUSED( track );
  43 }
  44
  45 void
  46 Meta::Observer::metadataChanged( Artist *artist )
  47 {
  48     Q_UNUSED( artist );
  49 }
  50
  51 void
  52 Meta::Observer::metadataChanged( Album *album )
  53 {
  54     Q_UNUSED( album );
  55 }
  56
  57 void
  58 Meta::Observer::metadataChanged( Composer *composer )
  59 {
  60     Q_UNUSED( composer );
  61 }
  62
  63 void
  64 Meta::Observer::metadataChanged( Genre *genre )
  65 {
  66     Q_UNUSED( genre );
  67 }
  68
  69 void
  70 Meta::Observer::metadataChanged( Year *year )
  71 {
  72     Q_UNUSED( year );
  73 }
  74
  75 //Meta::MetaBase
  76
  77 void
  78 Meta::MetaBase::subscribe( Observer *observer )
  79 {
  80     if( observer )
  81         m_observers.insert( observer );
  82 }
  83
  84 void
  85 Meta::MetaBase::unsubscribe( Observer *observer )
  86 {
  87     m_observers.remove( observer );
  88 }
  89
  90 //Meta::Track
  91
  92 bool
  93 Meta::Track::inCollection() const
  94 {
  95     return false;
  96 }
  97
  98 Collection*
  99 Meta::Track::collection() const
 100 {
 101     return 0;
 102 }
 103
 104 QString
 105 Meta::Track::cachedLyrics() const
 106 {
 107     return QString();
 108 }
 109
 110 void
 111 Meta::Track::setCachedLyrics( const QString &lyrics )
 112 {
 113     Q_UNUSED( lyrics )
 114 }
 115
 116 void
 117 Meta::Track::addMatchTo( QueryMaker *qm )
 118 {
 119     qm->addMatch( TrackPtr( this ) );
 120 }
 121
 122 void
 123 Meta::Track::finishedPlaying( double playedFraction )
 124 {
 125     Q_UNUSED( playedFraction )
 126 }
 127
 128 void
 129 Meta::Track::notifyObservers() const
 130 {
 131     foreach( Observer *observer, m_observers )
 132         observer->metadataChanged( const_cast<Meta::Track*>( this ) );
 133 }
 134
 135 //Meta::Artist
 136
 137 void
 138 Meta::Artist::addMatchTo( QueryMaker *qm )
 139 {
 140     qm->addMatch( ArtistPtr( this ) );
 141 }
 142
 143 void
 144 Meta::Artist::notifyObservers() const
 145 {
 146     foreach( Observer *observer, m_observers )
 147         observer->metadataChanged( const_cast<Meta::Artist*>( this ) );
 148 }
 149
 150 //Meta::Album
 151
 152 void
 153 Meta::Album::addMatchTo( QueryMaker *qm )
 154 {
 155     qm->addMatch( AlbumPtr( this ) );
 156 }
 157
 158 void
 159 Meta::Album::notifyObservers() const
 160 {
 161     foreach( Observer *observer, m_observers )
 162         observer->metadataChanged( const_cast<Meta::Album*>( this ) );
 163 }
 164
 165 QPixmap
 166 Meta::Album::image( int size, bool withShadow ) const
 167 {
 168     Q_UNUSED( withShadow );
 169
 170     QDir cacheCoverDir = QDir( Amarok::saveLocation( "albumcovers/cache/" ) );
 171     if ( size <= 1 )
 172         size = AmarokConfig::coverPreviewSize();
 173     QString sizeKey = QString::number( size ) + '@';
 174
 175     QImage img;
 176     if( cacheCoverDir.exists( sizeKey + "nocover.png" ) )
 177          img = QImage( cacheCoverDir.filePath( sizeKey + "nocover.png" ) );
 178     else
 179     {
 180         QImage orgImage = QImage( KStandardDirs::locate( "data", "amarok/images/nocover.png" ) ); //optimise this!
 181         img = orgImage.scaled( size, size, Qt::KeepAspectRatio, Qt::SmoothTransformation ); //scaled does not
 182         img.save( cacheCoverDir.filePath( sizeKey + "nocover.png" ), "PNG" );
 183     }
 184
 185     //if ( withShadow )
 186         //s = makeShadowedImage( s );
 187
 188     return QPixmap::fromImage( img );
 189 }
 190
 191 //Meta::Genre
 192
 193 void
 194 Meta::Genre::addMatchTo( QueryMaker *qm )
 195 {
 196     qm->addMatch( GenrePtr( this ) );
 197 }
 198
 199 void
 200 Meta::Genre::notifyObservers() const
 201 {
 202     foreach( Observer *observer, m_observers )
 203         observer->metadataChanged( const_cast<Meta::Genre*>( this ) );
 204 }
 205
 206 //Meta::Composer
 207
 208 void
 209 Meta::Composer::addMatchTo( QueryMaker *qm )
 210 {
 211     qm->addMatch( ComposerPtr( this ) );
 212 }
 213
 214 void
 215 Meta::Composer::notifyObservers() const
 216 {
 217     foreach( Observer *observer, m_observers )
 218         observer->metadataChanged( const_cast<Meta::Composer*>( this ) );
 219 }
 220
 221 //Meta::Year
 222
 223 void
 224 Meta::Year::addMatchTo( QueryMaker *qm )
 225 {
 226     qm->addMatch( YearPtr( this ) );
 227 }
 228
 229 void
 230 Meta::Year::notifyObservers() const
 231 {
 232     foreach( Observer *observer, m_observers )
 233         observer->metadataChanged( const_cast<Meta::Year*>( this ) );
 234 }
 235