Reader fullscreen option

app/src/main/kotlin/org/koitharu/kotatsu/core/prefs/AppSettings.kt

@@ -111,6 +111,9 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 	val isReaderZoomButtonsEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_ZOOM_BUTTONS, false)
 
+	val isReaderFullscreenEnabled: Boolean
+		get() = prefs.getBoolean(KEY_READER_FULLSCREEN, true)
+
 	val isReaderOptimizationEnabled: Boolean
 		get() = prefs.getBoolean(KEY_READER_OPTIMIZE, false)
 
@@ -482,6 +485,7 @@ class AppSettings @Inject constructor(@ApplicationContext context: Context) {
 		const val KEY_LOCAL_STORAGE = "local_storage"
 		const val KEY_READER_DOUBLE_PAGES = "reader_double_pages"
 		const val KEY_READER_ZOOM_BUTTONS = "reader_zoom_buttons"
+		const val KEY_READER_FULLSCREEN = "reader_fullscreen"
 		const val KEY_READER_VOLUME_BUTTONS = "reader_volume_buttons"
 		const val KEY_TRACKER_ENABLED = "tracker_enabled"
 		const val KEY_TRACKER_WIFI_ONLY = "tracker_wifi"

app/src/main/kotlin/org/koitharu/kotatsu/core/ui/BaseFullscreenActivity.kt

@@ -29,7 +29,6 @@ abstract class BaseFullscreenActivity<B : ViewBinding> :
 					WindowManager.LayoutParams.LAYOUT_IN_DISPLAY_CUTOUT_MODE_SHORT_EDGES
 			}
 		}
-		// insetsControllerCompat.systemBarsBehavior = WindowInsetsControllerCompat.BEHAVIOR_SHOW_TRANSIENT_BARS_BY_SWIPE
 		systemUiController.setSystemUiVisible(true)
 	}
 }

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderActivity.kt

@@ -310,10 +310,12 @@ class ReaderActivity :
 				}
 				TransitionManager.beginDelayedTransition(viewBinding.root, transition)
 			}
+			val isFullscreen = settings.isReaderFullscreenEnabled
 			viewBinding.appbarTop.isVisible = isUiVisible
 			viewBinding.appbarBottom?.isVisible = isUiVisible
 			viewBinding.infoBar.isGone = isUiVisible || (!viewModel.isInfoBarEnabled.value)
-			systemUiController.setSystemUiVisible(isUiVisible)
+			viewBinding.infoBar.isTimeVisible = isFullscreen
+			systemUiController.setSystemUiVisible(isUiVisible || !isFullscreen)
 		}
 	}
 
@@ -330,6 +332,9 @@ class ReaderActivity :
 			rightMargin = systemBars.right + topMargin
 			leftMargin = systemBars.left + topMargin
 		}
+		viewBinding.infoBar.updatePadding(
+			top = systemBars.top,
+		)
 		return WindowInsetsCompat.Builder(insets)
 			.setInsets(WindowInsetsCompat.Type.systemBars(), Insets.NONE)
 			.build()

app/src/main/kotlin/org/koitharu/kotatsu/reader/ui/ReaderInfoBarView.kt

@@ -62,6 +62,12 @@ class ReaderInfoBarView @JvmOverloads constructor(
 	private val innerWidth
 		get() = width - paddingLeft - paddingRight - insetLeft - insetRight
 
+	var isTimeVisible: Boolean = true
+		set(value) {
+			field = value
+			invalidate()
+		}
+
 	init {
 		paint.strokeWidth = context.resources.resolveDp(2f)
 		val insetCorner = getSystemUiDimensionOffset("rounded_corner_content_padding")
@@ -92,6 +98,7 @@ class ReaderInfoBarView @JvmOverloads constructor(
 			(paddingLeft + insetLeft + cutoutInsetLeft).toFloat(),
 			paddingTop + insetTop + ty,
 		)
+		if (isTimeVisible) {
 			paint.textAlign = Paint.Align.RIGHT
 			canvas.drawTextOutline(
 				timeText,
@@ -99,6 +106,7 @@ class ReaderInfoBarView @JvmOverloads constructor(
 				paddingTop + insetTop + ty,
 			)
 		}
+	}
 
 	override fun onSizeChanged(w: Int, h: Int, oldw: Int, oldh: Int) {
 		super.onSizeChanged(w, h, oldw, oldh)
@@ -183,9 +191,11 @@ class ReaderInfoBarView @JvmOverloads constructor(
 
 		override fun onReceive(context: Context?, intent: Intent?) {
 			timeText = timeFormat.format(LocalTime.now())
+			if (isTimeVisible) {
 				invalidate()
 			}
 		}
+	}
 
 	@SuppressLint("DiscouragedApi")
 	private fun getSystemUiDimensionOffset(name: String, fallback: Int = 0): Int = runCatching {

app/src/main/res/values/strings.xml

@@ -586,4 +586,6 @@
     <string name="config_reset_confirm">Reset settings to default values? This action cannot be undone.</string>
     <string name="use_two_pages_landscape">Use two pages layout on landscape orientation (beta)</string>
 	<string name="default_webtoon_zoom_out">Default webtoon zoom out</string>
+	<string name="fullscreen_mode">Fullscreen mode</string>
+	<string name="reader_fullscreen_summary">Hide system status and navigation bars</string>
 </resources>

app/src/main/res/xml/pref_reader.xml

@@ -76,12 +76,18 @@
 		android:summary="@string/reader_optimize_summary"
 		android:title="@string/reader_optimize" />
 
+	<SwitchPreferenceCompat
+		android:defaultValue="true"
+		android:key="reader_fullscreen"
+		android:summary="@string/reader_fullscreen_summary"
+		android:title="@string/fullscreen_mode"
+		app:allowDividerAbove="true" />
+
 	<SwitchPreferenceCompat
 		android:defaultValue="true"
 		android:key="reader_bar"
 		android:summary="@string/reader_info_bar_summary"
-		android:title="@string/reader_info_bar"
+		android:title="@string/reader_info_bar" />
-		app:allowDividerAbove="true" />
 
 	<SwitchPreferenceCompat
 		android:defaultValue="true"