Simplify some statements

src/core/commandlineoptions.cpp

@@ -310,9 +310,8 @@ bool CommandlineOptions::Parse() {
 bool CommandlineOptions::is_empty() const {
   return player_action_ == Player_None && set_volume_ == -1 &&
          volume_modifier_ == 0 && seek_to_ == -1 && seek_by_ == 0 &&
-         play_track_at_ == -1 && show_osd_ == false &&
-         toggle_pretty_osd_ == false && urls_.isEmpty() && 
-         delete_current_track_ == false;
+         play_track_at_ == -1 && !show_osd_ && !toggle_pretty_osd_ &&
+         urls_.isEmpty() && !delete_current_track_;
 }
 
 bool CommandlineOptions::contains_play_options() const {

src/core/mergedproxymodel.cpp

@@ -505,10 +505,8 @@ void MergedProxyModel::LayoutChanged() {
 }
 
 bool MergedProxyModel::IsKnownModel(const QAbstractItemModel* model) const {
-  if (model == this || model == sourceModel() ||
-      merge_points_.contains(const_cast<QAbstractItemModel*>(model)))
-    return true;
-  return false;
+  return model == this || model == sourceModel() ||
+         merge_points_.contains(const_cast<QAbstractItemModel*>(model));
 }
 
 QModelIndexList MergedProxyModel::mapFromSource(

src/core/utilities.cpp

@@ -270,9 +270,7 @@ bool RemoveRecursive(const QString& path) {
     if (!QFile::remove(path + "/" + child)) return false;
   }
 
-  if (!dir.rmdir(path)) return false;
-
-  return true;
+  return dir.rmdir(path);
 }
 
 bool CopyRecursive(const QString& source, const QString& destination) {

src/devices/cddasongloader.cpp

@@ -193,7 +193,7 @@ void CddaSongLoader::AudioCDTagsLoaded(
       qobject_cast<MusicBrainzClient*>(sender());
   musicbrainz_client->deleteLater();
   SongList songs;
-  if (results.size() == 0) return;
+  if (results.empty()) return;
   int track_number = 1;
   for (const MusicBrainzClient::Result& ret : results) {
     Song song;

src/internet/core/internetmodel.cpp

@@ -351,11 +351,9 @@ void InternetModel::UpdateServices() {
     bool setting_val = s.value(service_name).toBool();
 
     // Only update if values are different
-    if (setting_val == true &&
-        shown_services_[internet_service].shown == false) {
+    if (setting_val && !shown_services_[internet_service].shown) {
       ShowService(internet_service);
-    } else if (setting_val == false &&
-               shown_services_[internet_service].shown == true) {
+    } else if (!setting_val && shown_services_[internet_service].shown) {
       HideService(internet_service);
     }
   }
@@ -378,7 +376,7 @@ int InternetModel::FindItemPosition(const QString& text) {
 }
 
 void InternetModel::ShowService(InternetService* service) {
-  if (shown_services_[service].shown != true) {
+  if (!shown_services_[service].shown) {
     QStandardItem* item = shown_services_[service].item;
     int pos = FindItemPosition(item->text());
     invisibleRootItem()->insertRow(pos, item);

src/internet/core/internetshowsettingspage.cpp

@@ -50,7 +50,7 @@ void InternetShowSettingsPage::Load() {
     item->setIcon(0, service_it.value().item->icon());
 
     Qt::CheckState check_state =
-        service_it.value().shown == true ? Qt::Checked : Qt::Unchecked;
+        service_it.value().shown ? Qt::Checked : Qt::Unchecked;
     item->setData(0, Qt::CheckStateRole, check_state);
     /* We have to store the constant name of the service */
     item->setData(1, Qt::UserRole, service_it.key()->name());

src/internet/podcasts/gpoddertoptagsmodel.cpp

@@ -40,7 +40,7 @@ bool GPodderTopTagsModel::hasChildren(const QModelIndex& parent) const {
 
 bool GPodderTopTagsModel::canFetchMore(const QModelIndex& parent) const {
   if (parent.isValid() && parent.data(Role_Type).toInt() == Type_Folder &&
-      parent.data(Role_HasLazyLoaded).toBool() == false) {
+      !parent.data(Role_HasLazyLoaded).toBool()) {
     return true;
   }
 

src/internet/podcasts/podcastdiscoverymodel.cpp

@@ -38,8 +38,7 @@ PodcastDiscoveryModel::PodcastDiscoveryModel(Application* app, QObject* parent)
 
 QVariant PodcastDiscoveryModel::data(const QModelIndex& index, int role) const {
   if (index.isValid() && role == Qt::DecorationRole &&
-      QStandardItemModel::data(index, Role_StartedLoadingImage).toBool() ==
-          false) {
+      !QStandardItemModel::data(index, Role_StartedLoadingImage).toBool()) {
     const QUrl image_url =
         QStandardItemModel::data(index, Role_ImageUrl).toUrl();
     if (image_url.isValid()) {

src/internet/subsonic/subsonicservice.cpp

@@ -481,7 +481,7 @@ void SubsonicLibraryScanner::OnGetAlbumListFinished(QNetworkReply* reply,
   if (albums_added > 0) {
     // Non-empty reply means potentially more albums to fetch
     GetAlbumList(offset + kAlbumChunkSize);
-  } else if (album_queue_.size() == 0) {
+  } else if (album_queue_.empty()) {
     // Empty reply and no albums means an empty Subsonic server
     scanning_ = false;
     emit ScanFinished();

src/networkremote/incomingdataparser.cpp

@@ -268,7 +268,7 @@ void IncomingDataParser::InsertUrls(const pb::remote::Message& msg) {
   const pb::remote::RequestInsertUrls& request = msg.request_insert_urls();
 
   // Insert plain urls without metadata
-  if (request.urls().size() > 0) {
+  if (!request.urls().empty()) {
     QList<QUrl> urls;
     for (auto it = request.urls().begin(); it != request.urls().end(); ++it) {
       std::string s = *it;
@@ -281,7 +281,7 @@ void IncomingDataParser::InsertUrls(const pb::remote::Message& msg) {
   }
 
   // Add songs with metadata if present
-  if (request.songs().size() > 0) {
+  if (!request.songs().empty()) {
     SongList songs;
     for (int i = 0; i < request.songs().size(); i++) {
       songs << CreateSongFromProtobuf(request.songs(i));

src/playlist/playlistlistcontainer.cpp

@@ -128,11 +128,7 @@ class PlaylistListFilterProxyModel : public QSortFilterProxyModel {
     }
 
     //accept if any of the children is accepted on it's own merits
-    if (hasAcceptedChildren(source_row, source_parent)) {
-      return true;
-    }
-
-    return false;
+    return hasAcceptedChildren(source_row, source_parent);
   }
 };
 

src/playlist/playlistview.cpp

@@ -1133,7 +1133,7 @@ void PlaylistView::ReloadSettings() {
   // set_background_image when it is not needed, as this will cause the fading
   // animation to start again. This also avoid to do useless
   // "force_background_redraw".
-  if (background_initialized_ == false ||
+  if (!background_initialized_ ||
       background_image_filename != background_image_filename_ ||
       background_type != background_image_type_ ||
       blur_radius_ != blur_radius || opacity_level_ != opacity_level) {

src/ripper/ripper.cpp

@@ -104,10 +104,7 @@ bool Ripper::CheckCDIOIsValid() {
 }
 
 bool Ripper::MediaChanged() const {
-  if (cdio_ && cdio_get_media_changed(cdio_))
-    return true;
-  else
-    return false;
+  return cdio_ && cdio_get_media_changed(cdio_);
 }
 
 void Ripper::Start() {

src/ui/albumcoverchoicecontroller.cpp

@@ -347,10 +347,7 @@ bool AlbumCoverChoiceController::CanAcceptDrag(const QDragEnterEvent* e) {
     const QString suffix = QFileInfo(url.toLocalFile()).suffix().toLower();
     if (IsKnownImageExtension(suffix)) return true;
   }
-  if (e->mimeData()->hasImage()) {
-    return true;
-  }
-  return false;
+  return e->mimeData()->hasImage();
 }
 
 QString AlbumCoverChoiceController::SaveCover(Song* song, const QDropEvent* e) {

src/widgets/nowplayingwidget.cpp

@@ -110,8 +110,7 @@ NowPlayingWidget::NowPlayingWidget(QWidget* parent)
   fit_cover_width_action_ = menu_->addAction(tr("Fit cover to width"));
 
   fit_cover_width_action_->setCheckable(true);
-  fit_cover_width_action_->setEnabled((mode_ != SmallSongDetails) ? true
-                                                                  : false);
+  fit_cover_width_action_->setEnabled(mode_ != SmallSongDetails);
   connect(fit_cover_width_action_, SIGNAL(toggled(bool)),
           SLOT(FitCoverWidth(bool)));
   fit_cover_width_action_->setChecked(fit_width_);