- make the cache work as expected

1 files changed, 35 insertions, 4 deletions

diff --git a/noncore/multimedia/opieplayer2/skin.cpp b/noncore/multimedia/opieplayer2/skin.cpp
index 5013bb4..0f49862 100644
--- a/noncore/multimedia/opieplayer2/skin.cpp
+++ b/noncore/multimedia/opieplayer2/skin.cpp
@@ -32,52 +32,55 @@
 #include <assert.h>
 
 struct SkinData
 {
     typedef QMap<QString, QImage> ButtonMaskImageMap;
 
     QImage backgroundImage;
     QImage buttonUpImage;
     QImage buttonDownImage;
     QImage buttonMask;
     ButtonMaskImageMap buttonMasks;
 };
 
 class SkinCache : public Singleton<SkinCache>
 {
 public:
     SkinCache();
 
     SkinData *lookupAndTake( const QString &skinPath, const QString &fileNameInfix );
 
     void store( const QString &skinPath, const QString &fileNameInfix, SkinData *data );
 
 private:
     typedef QCache<SkinData> DataCache;
-    typedef QCache<QPixmap> BackgroundPixmapCache;
+    typedef QCache<QImage> BackgroundImageCache;
+
+    template <class CacheType>
+    void store( const QCache<CacheType> &cache, const QString &key, CacheType *data );
 
     DataCache m_cache;
-    BackgroundPixmapCache m_backgroundPixmapCache;
+    BackgroundImageCache m_backgroundImageCache;
 };
 
 Skin::Skin( const QString &name, const QString &fileNameInfix )
     : m_fileNameInfix( fileNameInfix )
 {
     init( name );
 }
 
 Skin::Skin( const QString &fileNameInfix )
     : m_fileNameInfix( fileNameInfix )
 {
     init( defaultSkinName() );
 }
 
 Skin::~Skin()
 {
     SkinCache::self().store( m_skinPath, m_fileNameInfix, d );
 }
 
 void Skin::init( const QString &name )
 {
     m_skinPath = "opieplayer2/skins/" + name;
     d = SkinCache::self().lookupAndTake( m_skinPath, m_fileNameInfix );
 }
@@ -145,58 +148,86 @@ QImage Skin::buttonMaskImage( const QString &fileName ) const
 {
     SkinData::ButtonMaskImageMap::Iterator it = d->buttonMasks.find( fileName );
     if ( it == d->buttonMasks.end() ) {
         QString prefix = m_skinPath + QString::fromLatin1( "/skin%1_mask_" ).arg( m_fileNameInfix );
         QString path = prefix + fileName + ".png";
         it = d->buttonMasks.insert( fileName, loadImage( path ) );
     }
     return *it;
 }
 
 QString Skin::defaultSkinName()
 {
     Config cfg( "OpiePlayer" );
     cfg.setGroup( "Options" );
     return cfg.readEntry( "Skin", "default" );
 }
 
 QImage Skin::loadImage( const QString &fileName )
 {
     return QImage( Resource::findPixmap( fileName ) );
 }
 
 SkinCache::SkinCache()
 {
+    // let's say we cache two skins (audio+video) at maximum
+    m_cache.setMaxCost( 2 );
+    // ... and one background pixmap
+    m_backgroundImageCache.setMaxCost( 1 );
 }
 
 SkinData *SkinCache::lookupAndTake( const QString &skinPath, const QString &fileNameInfix )
 {
-    return new SkinData;
+    QString key = skinPath + fileNameInfix;
+
+    SkinData *data = m_cache.take( key );
+    if ( !data )
+        data = new SkinData;
+
+    QImage *bgImage = m_backgroundImageCache.find( skinPath );
+    if ( bgImage )
+        data->backgroundImage = *bgImage;
+    else
+        data->backgroundImage = QImage();
+
+    return data;
 }
 
 void SkinCache::store( const QString &skinPath, const QString &fileNameInfix, SkinData *data )
 {
-    delete data;
+    QImage *backgroundImage = new QImage( data->backgroundImage );
+
+    data->backgroundImage = QImage();
+
+    QString key = skinPath + fileNameInfix;
+
+    if ( m_cache.find( key, false /*ref*/ ) != 0 ||
+         !m_cache.insert( key, data ) )
+        delete data;
+
+    if ( m_backgroundImageCache.find( skinPath, false /*ref*/ ) != 0 ||
+         !m_backgroundImageCache.insert( skinPath, backgroundImage ) )
+        delete backgroundImage;
 }
 
 SkinLoader::SkinLoader()
 {
 }
 
 void SkinLoader::schedule( const QString &skinName, const QString &fileNameInfix, 
                            const MediaWidget::SkinButtonInfo *skinButtonInfo, const uint buttonCount )
 {
     assert( isRunning() == false );
 
     pendingSkins << Info( skinName, fileNameInfix, skinButtonInfo, buttonCount );
 }
 
 void SkinLoader::run()
 {
     qDebug( "SkinLoader::run()" );
     for ( InfoList::ConstIterator it = pendingSkins.begin(); it != pendingSkins.end(); ++it )
         load( *it );
     qDebug( "SkinLoader is done." );
 }
 
 void SkinLoader::load( const Info &nfo )
 {