Added system tray menu item to unhide the application

src/ui/macsystemtrayicon.h

@@ -33,7 +33,7 @@ class MacSystemTrayIcon : public SystemTrayIcon {
 
   void SetupMenu(QAction* previous, QAction* play, QAction* stop,
                  QAction* stop_after, QAction* next, QAction* mute,
-                 QAction* love, QAction* quit);
+                 QAction* show_hide, QAction* love, QAction* quit);
 
   void SetNowPlaying(const Song& song, const QString& image_path);
   void ClearNowPlaying();

src/ui/macsystemtrayicon.mm

@@ -163,8 +163,8 @@ MacSystemTrayIcon::MacSystemTrayIcon(QObject* parent)
 MacSystemTrayIcon::~MacSystemTrayIcon() {}
 
 void MacSystemTrayIcon::SetupMenu(QAction* previous, QAction* play, QAction* stop,
-                                  QAction* stop_after, QAction* next, QAction* mute, QAction* love,
-                                  QAction* quit) {
+                                  QAction* stop_after, QAction* next, QAction* mute, 
+                                  QAction* show_hide, QAction* love, QAction* quit) {
   p_.reset(new MacSystemTrayIconPrivate());
   SetupMenuItem(previous);
   SetupMenuItem(play);
@@ -173,6 +173,7 @@ void MacSystemTrayIcon::SetupMenu(QAction* previous, QAction* play, QAction* sto
   SetupMenuItem(next);
   p_->AddSeparator();
   SetupMenuItem(mute);
+  SetupMenuItem(show_hide);
   p_->AddSeparator();
   SetupMenuItem(love);
   Q_UNUSED(quit);  // Mac already has a Quit item.

src/ui/mainwindow.cpp

@@ -430,6 +430,8 @@ MainWindow::MainWindow(Application* app, SystemTrayIcon* tray_icon, OSD* osd,
   connect(ui_->action_stop_after_this_track, SIGNAL(triggered()),
           SLOT(StopAfterCurrent()));
   connect(ui_->action_mute, SIGNAL(triggered()), app_->player(), SLOT(Mute()));
+  connect(ui_->action_show_hide, SIGNAL(triggered()), SLOT(ToggleShowHide()));
+
 #ifdef HAVE_LIBLASTFM
   connect(ui_->action_love, SIGNAL(triggered()), SLOT(Love()));
   connect(ui_->action_toggle_scrobbling, SIGNAL(triggered()), app_->scrobbler(),
@@ -825,7 +827,7 @@ MainWindow::MainWindow(Application* app, SystemTrayIcon* tray_icon, OSD* osd,
     tray_icon_->SetupMenu(ui_->action_previous_track, ui_->action_play_pause,
                           ui_->action_stop, ui_->action_stop_after_this_track,
                           ui_->action_next_track, ui_->action_mute,
-                          ui_->action_love, ui_->action_quit);
+                          ui_->action_show_hide, ui_->action_love, ui_->action_quit);
     connect(tray_icon_, SIGNAL(PlayPause()), app_->player(), SLOT(PlayPause()));
     connect(tray_icon_, SIGNAL(SeekForward()), app_->player(),
             SLOT(SeekForward()));

src/ui/mainwindow.ui

@@ -565,6 +565,7 @@
     <addaction name="action_configure"/>
     <addaction name="separator"/>
     <addaction name="action_toggle_show_sidebar"/>
+    <addaction name="action_show_hide"/>
    </widget>
    <addaction name="menu_music"/>
    <addaction name="menu_playlist"/>
@@ -878,6 +879,14 @@
     <string notr="true">Ctrl+M</string>
    </property>
   </action>
+  <action name="action_show_hide">
+   <property name="checkable">
+    <bool>false</bool>
+   </property>
+   <property name="text">
+    <string>Show/Hide Clementine</string>
+   </property>
+  </action>
   <action name="action_full_library_scan">
    <property name="text">
     <string>Do a full library rescan</string>

src/ui/qtsystemtrayicon.cpp

@@ -36,6 +36,7 @@ QtSystemTrayIcon::QtSystemTrayIcon(QObject* parent)
       action_stop_(nullptr),
       action_stop_after_this_track_(nullptr),
       action_mute_(nullptr),
+      action_show_hide_(nullptr),
       action_love_(nullptr) {
   QIcon theme_icon = IconLoader::Load("clementine-panel", IconLoader::Base);
   QIcon theme_icon_grey =
@@ -103,8 +104,8 @@ bool QtSystemTrayIcon::eventFilter(QObject* object, QEvent* event) {
 
 void QtSystemTrayIcon::SetupMenu(QAction* previous, QAction* play,
                                  QAction* stop, QAction* stop_after,
-                                 QAction* next, QAction* mute, QAction* love,
-                                 QAction* quit) {
+                                 QAction* next, QAction* mute, QAction* show_hide, 
+                                 QAction* love, QAction* quit) {
   // Creating new actions and connecting them to old ones. This allows us to
   // use old actions without displaying shortcuts that can not be used when
   // Clementine's window is hidden
@@ -123,6 +124,8 @@ void QtSystemTrayIcon::SetupMenu(QAction* previous, QAction* play,
       menu_->addAction(mute->icon(), mute->text(), mute, SLOT(trigger()));
   action_mute_->setCheckable(true);
   action_mute_->setChecked(mute->isChecked());
+  action_show_hide_ = 
+      menu_->addAction(show_hide->icon(), show_hide->text(), show_hide, SLOT(trigger()));
 
   menu_->addSeparator();
 #ifdef HAVE_LIBLASTFM

src/ui/qtsystemtrayicon.h

@@ -32,7 +32,7 @@ class QtSystemTrayIcon : public SystemTrayIcon {
 
   void SetupMenu(QAction* previous, QAction* play, QAction* stop,
                  QAction* stop_after, QAction* next, QAction* mute,
-                 QAction* love, QAction* quit);
+                 QAction* show_hide, QAction* love, QAction* quit);
   bool IsVisible() const;
   void SetVisible(bool visible);
 
@@ -64,6 +64,7 @@ class QtSystemTrayIcon : public SystemTrayIcon {
   QAction* action_stop_;
   QAction* action_stop_after_this_track_;
   QAction* action_mute_;
+  QAction* action_show_hide_;
   QAction* action_love_;
 
   QPixmap orange_icon_;

src/ui/systemtrayicon.h

@@ -33,7 +33,7 @@ class SystemTrayIcon : public QObject {
   // Called once to create the icon's context menu
   virtual void SetupMenu(QAction* previous, QAction* play, QAction* stop,
                          QAction* stop_after, QAction* next, QAction* mute,
-                         QAction* love, QAction* quit) = 0;
+                         QAction* show_hide, QAction* love, QAction* quit) = 0;
 
   virtual bool IsVisible() const { return true; }
   virtual void SetVisible(bool visible) {}