Make lyrics and last_fm screens lockable and startup screens

src/screens/lastfm.cpp

@@ -33,7 +33,8 @@ using Global::MainStartY;
 Lastfm *myLastfm;
 
 Lastfm::Lastfm()
-: Screen(NC::Scrollpad(0, MainStartY, COLS, MainHeight, "", Config.main_color, NC::Border()))
+	: Screen(NC::Scrollpad(0, MainStartY, COLS, MainHeight, "", Config.main_color, NC::Border()))
+	, m_refresh_window(false)
 { }
 
 void Lastfm::resize()
@@ -47,13 +48,36 @@ void Lastfm::resize()
 
 std::wstring Lastfm::title()
 {
-	return m_title;
+	if (m_title.empty())
+		return L"Last.fm";
+	else
+		return m_title;
 }
 
 void Lastfm::update()
 {
 	if (m_worker.valid() && m_worker.is_ready())
-		getResult();
+	{
+		auto result = m_worker.get();
+		if (result.first)
+		{
+			w.clear();
+			w << Charset::utf8ToLocale(result.second);
+			m_service->beautifyOutput(w);
+		}
+		else
+			w << " " << NC::Color::Red << result.second << NC::Color::End;
+		// reset m_worker so it's no longer valid
+		m_worker = boost::BOOST_THREAD_FUTURE<LastFm::Service::Result>();
+		m_refresh_window = true;
+	}
+
+	if (m_refresh_window)
+	{
+		m_refresh_window = false;
+		w.flush();
+		w.refresh();
+	}
 }
 
 void Lastfm::switchTo()
@@ -67,20 +91,3 @@ void Lastfm::switchTo()
 	else
 		switchToPreviousScreen();
 }
-
-void Lastfm::getResult()
-{
-	auto result = m_worker.get();
-	if (result.first)
-	{
-		w.clear();
-		w << Charset::utf8ToLocale(result.second);
-		m_service->beautifyOutput(w);
-	}
-	else
-		w << " " << NC::Color::Red << result.second << NC::Color::End;
-	w.flush();
-	w.refresh();
-	// reset m_worker so it's no longer valid
-	m_worker = boost::BOOST_THREAD_FUTURE<LastFm::Service::Result>();
-}

src/screens/lastfm.h

@@ -43,7 +43,7 @@ struct Lastfm: Screen<NC::Scrollpad>, Tabbable
 	
 	virtual void update() override;
 	
-	virtual bool isLockable() override { return false; }
+	virtual bool isLockable() override { return true; }
 	virtual bool isMergable() override { return true; }
 	
 	template <typename ServiceT>
@@ -61,14 +61,13 @@ struct Lastfm: Screen<NC::Scrollpad>, Tabbable
 
 		w.clear();
 		w << "Fetching information...";
-		w.flush();
+		m_refresh_window = true;
 		m_title = ToWString(m_service->name());
 	}
 
 private:
-	void getResult();
-	
 	std::wstring m_title;
+	bool m_refresh_window;
 	
 	std::shared_ptr<LastFm::Service> m_service;
 	boost::BOOST_THREAD_FUTURE<LastFm::Service::Result> m_worker;

src/screens/lyrics.cpp

@@ -259,13 +259,17 @@ void Lyrics::switchTo()
 
 std::wstring Lyrics::title()
 {
-	std::wstring result = L"Lyrics: ";
-	result += Scroller(
-		Format::stringify<wchar_t>(Format::parse(L"{%a - %t}|{%f}"), &m_song),
-		m_scroll_begin,
-		COLS - result.length() - (Config.design == Design::Alternative
-		                          ? 2
-		                          : Global::VolumeState.length()));
+	std::wstring result = L"Lyrics";
+	if (!m_song.empty())
+	{
+		result += L": ";
+		result += Scroller(
+			Format::stringify<wchar_t>(Format::parse(L"{%a - %t}|{%f}"), &m_song),
+			m_scroll_begin,
+			COLS - result.length() - (Config.design == Design::Alternative
+			                          ? 2
+			                          : Global::VolumeState.length()));
+	}
 	return result;
 }
 

src/screens/lyrics.h

@@ -46,7 +46,7 @@ struct Lyrics: Screen<NC::Scrollpad>, Tabbable
 	
 	virtual void update() override;
 	
-	virtual bool isLockable() override { return false; }
+	virtual bool isLockable() override { return true; }
 	virtual bool isMergable() override { return true; }
 
 	// other members

src/screens/screen_type.cpp

@@ -123,6 +123,10 @@ ScreenType stringtoStartupScreenType(const std::string &s)
 	else if (s == "visualizer")
 		result = ScreenType::Visualizer;
 #	endif // ENABLE_VISUALIZER
+	else if (s == "lyrics")
+		result = ScreenType::Lyrics;
+	else if (s == "last_fm")
+		result = ScreenType::Lastfm;
 	return result;
 }