Download higher resolution images from last.fm. Thanks markwatkinson. Fixes issue #1187

src/core/albumcoverfetcher.cpp

@@ -117,7 +117,7 @@ void AlbumCoverFetcher::AlbumSearchFinished() {
       SearchResult result;
       result.album = element["name"].text();
       result.artist = element["artist"].text();
-      result.image_url = element["image size=large"].text();
+      result.image_url = element["image size=extralarge"].text();
       results << result;
     }
 

src/core/albumcoverfetcher.h

@@ -31,6 +31,8 @@
 class QNetworkReply;
 class QString;
 
+// This class searches for album covers for a given query or artist/album and
+// returns URLs.
 class AlbumCoverFetcher : public QObject {
   Q_OBJECT
 

src/ui/albumcovermanager.cpp

@@ -180,6 +180,7 @@ void AlbumCoverManager::Init() {
 
   cover_loader_->Start(true);
   CoverLoaderInitialised();
+  cover_searcher_->Init(cover_fetcher_);
   constructed_ = true;
 }
 
@@ -187,8 +188,6 @@ void AlbumCoverManager::CoverLoaderInitialised() {
   cover_loader_->Worker()->SetDefaultOutputImage(QImage(":nocover.png"));
   connect(cover_loader_->Worker().get(), SIGNAL(ImageLoaded(quint64,QImage)),
           SLOT(CoverImageLoaded(quint64,QImage)));
-
-  cover_searcher_->Init(cover_loader_->Worker(), cover_fetcher_);
 }
 
 void AlbumCoverManager::showEvent(QShowEvent *) {

src/ui/albumcoversearcher.cpp

@@ -27,12 +27,20 @@ AlbumCoverSearcher::AlbumCoverSearcher(const QIcon& no_cover_icon, QWidget* pare
   : QDialog(parent),
     ui_(new Ui_AlbumCoverSearcher),
     no_cover_icon_(no_cover_icon),
+    loader_(new BackgroundThreadImplementation<AlbumCoverLoader, AlbumCoverLoader>(this)),
     fetcher_(NULL),
     id_(0)
 {
   ui_->setupUi(this);
   ui_->busy->hide();
 
+  loader_->Start(true);
+  loader_->Worker()->SetDefaultOutputImage(QImage(":nocover.png"));
+  loader_->Worker()->SetScaleOutputImage(false);
+  loader_->Worker()->SetPadOutputImage(false);
+  connect(loader_->Worker().get(), SIGNAL(ImageLoaded(quint64,QImage)),
+          SLOT(ImageLoaded(quint64,QImage)));
+
   connect(ui_->search, SIGNAL(clicked()), SLOT(Search()));
   connect(ui_->covers, SIGNAL(doubleClicked(QModelIndex)), SLOT(CoverDoubleClicked(QModelIndex)));
 }
@@ -41,13 +49,10 @@ AlbumCoverSearcher::~AlbumCoverSearcher() {
   delete ui_;
 }
 
-void AlbumCoverSearcher::Init(boost::shared_ptr<AlbumCoverLoader> loader,
-                              AlbumCoverFetcher *fetcher) {
-  loader_ = loader;
+void AlbumCoverSearcher::Init(AlbumCoverFetcher* fetcher) {
   fetcher_ = fetcher;
 
   connect(fetcher_, SIGNAL(SearchFinished(quint64,AlbumCoverFetcher::SearchResults)), SLOT(SearchFinished(quint64,AlbumCoverFetcher::SearchResults)));
-  connect(loader_.get(), SIGNAL(ImageLoaded(quint64,QImage)), SLOT(ImageLoaded(quint64,QImage)));
 }
 
 QImage AlbumCoverSearcher::Exec(const QString &query) {
@@ -91,7 +96,7 @@ void AlbumCoverSearcher::SearchFinished(quint64 id, const AlbumCoverFetcher::Sea
     if (result.image_url.isEmpty())
       continue;
 
-    quint64 id = loader_->LoadImageAsync(result.image_url, QString());
+    quint64 id = loader_->Worker()->LoadImageAsync(result.image_url, QString());
 
     QListWidgetItem* item = new QListWidgetItem(ui_->covers);
     item->setIcon(no_cover_icon_);
@@ -107,12 +112,18 @@ void AlbumCoverSearcher::SearchFinished(quint64 id, const AlbumCoverFetcher::Sea
     ui_->busy->hide();
 }
 
-void AlbumCoverSearcher::ImageLoaded(quint64 id, const QImage &image) {
+void AlbumCoverSearcher::ImageLoaded(quint64 id, const QImage& image) {
   if (!cover_loading_tasks_.contains(id))
     return;
 
+  QIcon icon(QPixmap::fromImage(image));
+
+  // Add an icon that's the right size for the view
+  icon.addPixmap(QPixmap::fromImage(image.scaled(ui_->covers->iconSize(),
+      Qt::KeepAspectRatio, Qt::SmoothTransformation)));
+
   QListWidgetItem* item = cover_loading_tasks_.take(id);
-  item->setIcon(QIcon(QPixmap::fromImage(image)));
+  item->setIcon(icon);
 
   if (cover_loading_tasks_.isEmpty())
     ui_->busy->hide();

src/ui/albumcoversearcher.h

@@ -19,6 +19,7 @@
 #define ALBUMCOVERSEARCHER_H
 
 #include "core/albumcoverfetcher.h"
+#include "core/backgroundthread.h"
 
 #include <QDialog>
 #include <QIcon>
@@ -31,6 +32,7 @@ class Ui_AlbumCoverSearcher;
 class QListWidgetItem;
 class QModelIndex;
 
+// This is a dialog that lets the user search for album covers
 class AlbumCoverSearcher : public QDialog {
   Q_OBJECT
 
@@ -43,8 +45,7 @@ public:
     Role_ImageRequestId,
   };
 
-  void Init(boost::shared_ptr<AlbumCoverLoader> loader,
-            AlbumCoverFetcher* fetcher);
+  void Init(AlbumCoverFetcher* fetcher);
 
   QImage Exec(const QString& query);
 
@@ -62,7 +63,7 @@ private:
   Ui_AlbumCoverSearcher* ui_;
 
   QIcon no_cover_icon_;
-  boost::shared_ptr<AlbumCoverLoader> loader_;
+  BackgroundThread<AlbumCoverLoader>* loader_;
   AlbumCoverFetcher* fetcher_;
 
   quint64 id_;

src/ui/edittagdialog.cpp

@@ -63,7 +63,7 @@ EditTagDialog::EditTagDialog(QWidget* parent)
           SLOT(ArtLoaded(quint64,QImage)));
 
 #ifdef HAVE_LIBLASTFM
-  cover_searcher_->Init(cover_loader_->Worker(), cover_fetcher_);
+  cover_searcher_->Init(cover_fetcher_);
 #endif
 
   ui_->setupUi(this);

src/widgets/nowplayingwidget.cpp

@@ -125,6 +125,10 @@ NowPlayingWidget::NowPlayingWidget(QWidget *parent)
   // Start loading the cover loader thread
   cover_loader_->Start();
   connect(cover_loader_, SIGNAL(Initialised()), SLOT(CoverLoaderInitialised()));
+
+#ifdef HAVE_LIBLASTFM
+  cover_searcher_->Init(cover_fetcher_);
+#endif
 }
 
 void NowPlayingWidget::CreateModeAction(Mode mode, const QString &text, QActionGroup *group, QSignalMapper* mapper) {
@@ -155,10 +159,6 @@ void NowPlayingWidget::CoverLoaderInitialised() {
   loader->Worker()->SetPadOutputImage(true);
   connect(loader->Worker().get(), SIGNAL(ImageLoaded(quint64,QImage)),
           SLOT(AlbumArtLoaded(quint64,QImage)));
-
-#ifdef HAVE_LIBLASTFM
-  cover_searcher_->Init(cover_loader_->Worker(), cover_fetcher_);
-#endif
 }
 
 void NowPlayingWidget::UpdateHeight(AlbumCoverLoader* loader) {