Fix #745: add option to prevent screensaver on Now Playing page

backend/config.go

@@ -61,6 +61,8 @@ type AppConfig struct {
 	SidebarWidthFraction        float64
 	SidebarTab                  string
 
+	PreventScreensaverOnNowPlayingPage bool
+
 	FontNormalTTF string
 	FontBoldTTF   string
 	UIScaleSize   string
@@ -189,29 +191,30 @@ var SupportedStartupPages = []string{"Albums", "Favorites", "Playlists", "Artist
 func DefaultConfig(appVersionTag string) *Config {
 	return &Config{
 		Application: AppConfig{
-			WindowWidth:                 1000,
-			WindowHeight:                800,
-			LastCheckedVersion:          appVersionTag,
-			LastLaunchedVersion:         "",
-			EnableSystemTray:            true,
-			CloseToSystemTray:           false,
-			StartupPage:                 "Albums",
-			SettingsTab:                 "General",
-			AllowMultiInstance:          false,
-			MaxImageCacheSizeMB:         50,
-			UIScaleSize:                 "Normal",
-			SavePlayQueue:               true,
-			SaveQueueToServer:           false,
-			ShowTrackChangeNotification: false,
-			EnableLrcLib:                true,
-			EnablePasswordStorage:       true,
-			SkipSSLVerify:               false,
-			EnqueueBatchSize:            100,
-			Language:                    "auto",
-			EnableAutoUpdateChecker:     true,
-			RequestTimeoutSeconds:       15,
-			EnableOSMediaPlayerAPIs:     true,
-			SidebarWidthFraction:        0.8,
+			WindowWidth:                        1000,
+			WindowHeight:                       800,
+			LastCheckedVersion:                 appVersionTag,
+			LastLaunchedVersion:                "",
+			EnableSystemTray:                   true,
+			CloseToSystemTray:                  false,
+			StartupPage:                        "Albums",
+			SettingsTab:                        "General",
+			AllowMultiInstance:                 false,
+			MaxImageCacheSizeMB:                50,
+			UIScaleSize:                        "Normal",
+			SavePlayQueue:                      true,
+			SaveQueueToServer:                  false,
+			ShowTrackChangeNotification:        false,
+			EnableLrcLib:                       true,
+			EnablePasswordStorage:              true,
+			SkipSSLVerify:                      false,
+			EnqueueBatchSize:                   100,
+			Language:                           "auto",
+			EnableAutoUpdateChecker:            true,
+			RequestTimeoutSeconds:              15,
+			EnableOSMediaPlayerAPIs:            true,
+			SidebarWidthFraction:               0.8,
+			PreventScreensaverOnNowPlayingPage: false,
 		},
 		AlbumPage: AlbumPageConfig{
 			TracklistColumns: []string{"Artist", "Time", "Plays", "Favorite", "Rating"},

res/translations/en.json

@@ -279,6 +279,7 @@
     "Remove from queue": "Remove from queue",
     "Play albums": "Play albums",
     "Play song radio": "Play song radio",
+    "Prevent screensaver on Now Playing page": "Prevent screensaver on Now Playing page",
     "to": "to",
     "by": "by",
     "Jan": "Jan",

ui/browsing/router.go

@@ -17,6 +17,8 @@ type Router struct {
 	Controller *controller.Controller
 	Nav        NavigationHandler
 	widgetPool *util.WidgetPool
+
+	OnNavigateTo func(controller.Route)
 }
 
 func NewRouter(app *backend.App, controller *controller.Controller, nav NavigationHandler) Router {
@@ -63,8 +65,11 @@ func (r Router) CreatePage(rte controller.Route) Page {
 	return nil
 }
 
-func (r Router) NavigateTo(rte controller.Route) {
+func (r *Router) NavigateTo(rte controller.Route) {
 	if rte != r.Nav.CurrentPage() {
 		r.Nav.SetPage(r.CreatePage(rte))
 	}
+	if r.OnNavigateTo != nil {
+		r.OnNavigateTo(rte)
+	}
 }

ui/dialogs/settingsdialog.go

@@ -634,12 +634,16 @@ func (s *SettingsDialog) createAdvancedTab() *container.TabItem {
 	})
 	osMediaAPIs.Checked = s.config.Application.EnableOSMediaPlayerAPIs
 
+	preventScreensaver := widget.NewCheckWithData(lang.L("Prevent screensaver on Now Playing page"),
+		binding.BindBool(&s.config.Application.PreventScreensaverOnNowPlayingPage))
+
 	return container.NewTabItem(lang.L("Advanced"), container.NewVBox(
 		multi,
 		sslSkip,
 		update,
 		lrclib,
 		osMediaAPIs,
+		preventScreensaver,
 		imgCacheCfg,
 	))
 }

ui/mainwindow.go

@@ -51,6 +51,8 @@ type MainWindow struct {
 
 	// updated when changing servers or libraries
 	librarySubmenu *fyne.Menu
+
+	isScreensaverDisabled bool
 }
 
 func NewMainWindow(fyneApp fyne.App, appName, displayAppName, appVersion string, app *backend.App) MainWindow {
@@ -156,6 +158,18 @@ func NewMainWindow(fyneApp fyne.App, appName, displayAppName, appVersion string,
 	m.Window.SetContent(fynetooltip.AddWindowToolTipLayer(m.content, m.Window.Canvas()))
 	m.setInitialSize()
 
+	m.Router.OnNavigateTo = func(r controller.Route) {
+		if r.Page == controller.NowPlayingRoute().Page {
+			if m.App.Config.Application.PreventScreensaverOnNowPlayingPage && !m.isScreensaverDisabled {
+				fyne.CurrentApp().Driver().SetDisableScreenBlanking(true)
+				m.isScreensaverDisabled = true
+			}
+		} else if m.isScreensaverDisabled {
+			fyne.CurrentApp().Driver().SetDisableScreenBlanking(false)
+			m.isScreensaverDisabled = false
+		}
+	}
+
 	m.Window.SetCloseIntercept(func() {
 		m.SaveWindowSettings()
 		if app.Config.Application.CloseToSystemTray && m.HaveSystemTray() {