Fix window insets handling when in landscape mode

To avoid code duplication, insets handling has been moved to a separate interface.

app/src/main/java/emu/skyline/MainActivity.kt

@@ -18,7 +18,9 @@ import androidx.appcompat.app.AppCompatDelegate
 import androidx.core.content.ContextCompat
 import androidx.core.content.res.use
 import androidx.core.graphics.drawable.toBitmap
-import androidx.core.view.*
+import androidx.core.view.WindowCompat
+import androidx.core.view.isInvisible
+import androidx.core.view.isVisible
 import androidx.documentfile.provider.DocumentFile
 import androidx.preference.PreferenceManager
 import androidx.recyclerview.widget.GridLayoutManager
@@ -35,6 +37,7 @@ import emu.skyline.loader.LoaderResult
 import emu.skyline.loader.RomFormat
 import emu.skyline.provider.DocumentsProvider
 import emu.skyline.utils.PreferenceSettings
+import emu.skyline.utils.WindowInsetsHelper
 import javax.inject.Inject
 import kotlin.math.ceil
 
@@ -100,12 +103,7 @@ class MainActivity : AppCompatActivity() {
 
         setContentView(binding.root)
         WindowCompat.setDecorFitsSystemWindows(window, false)
-        // Apply inset padding to the app list recycler view to avoid navigation bar overlap
-        ViewCompat.setOnApplyWindowInsetsListener(binding.appList) { view, windowInsets ->
-            val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
-            view.updatePadding(bottom = insets.bottom)
-            WindowInsetsCompat.CONSUMED
-        }
+        WindowInsetsHelper.applyToActivity(binding.root, binding.appList)
 
         PreferenceManager.setDefaultValues(this, R.xml.preferences, false)
 

app/src/main/java/emu/skyline/SettingsActivity.kt

@@ -16,6 +16,7 @@ import androidx.preference.PreferenceCategory
 import androidx.preference.PreferenceFragmentCompat
 import emu.skyline.databinding.SettingsActivityBinding
 import emu.skyline.preference.IntegerListPreference
+import emu.skyline.utils.WindowInsetsHelper
 
 class SettingsActivity : AppCompatActivity() {
     val binding by lazy { SettingsActivityBinding.inflate(layoutInflater) }
@@ -33,6 +34,7 @@ class SettingsActivity : AppCompatActivity() {
 
         setContentView(binding.root)
         WindowCompat.setDecorFitsSystemWindows(window, false)
+        WindowInsetsHelper.applyToActivity(binding.root)
 
         setSupportActionBar(binding.titlebar.toolbar)
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
@@ -81,15 +83,9 @@ class SettingsActivity : AppCompatActivity() {
         }
 
         override fun onViewCreated(view : View, savedInstanceState : Bundle?) {
-            val recyclerView = view.findViewById<View>(R.id.recycler_view)
-            // Apply inset padding to the settings recycler view to avoid navigation bar overlap
-            ViewCompat.setOnApplyWindowInsetsListener(recyclerView) { v, windowInsets ->
-                val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
-                v.updatePadding(bottom = insets.bottom)
-                WindowInsetsCompat.CONSUMED
-            }
-
             super.onViewCreated(view, savedInstanceState)
+            val recyclerView = view.findViewById<View>(R.id.recycler_view)
+            WindowInsetsHelper.setPadding(recyclerView, bottom = true)
         }
 
         /**

app/src/main/java/emu/skyline/input/ControllerActivity.kt

@@ -12,7 +12,8 @@ import android.view.KeyEvent
 import android.view.ViewTreeObserver
 import androidx.appcompat.app.AppCompatActivity
 import androidx.coordinatorlayout.widget.CoordinatorLayout
-import androidx.core.view.*
+import androidx.core.view.WindowCompat
+import androidx.core.view.marginTop
 import androidx.recyclerview.widget.DividerItemDecoration
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -29,6 +30,7 @@ import emu.skyline.input.dialog.RumbleDialog
 import emu.skyline.input.dialog.StickDialog
 import emu.skyline.input.onscreen.OnScreenEditActivity
 import emu.skyline.utils.PreferenceSettings
+import emu.skyline.utils.WindowInsetsHelper
 import javax.inject.Inject
 
 /**
@@ -173,12 +175,7 @@ class ControllerActivity : AppCompatActivity() {
 
         setContentView(binding.root)
         WindowCompat.setDecorFitsSystemWindows(window, false)
-        // Apply inset padding to the controller list recycler view to avoid navigation bar overlap
-        ViewCompat.setOnApplyWindowInsetsListener(binding.controllerList) { view, windowInsets ->
-            val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
-            view.updatePadding(bottom = insets.bottom)
-            WindowInsetsCompat.CONSUMED
-        }
+        WindowInsetsHelper.applyToActivity(binding.root, binding.controllerList)
 
         setSupportActionBar(binding.titlebar.toolbar)
         supportActionBar?.setDisplayHomeAsUpEnabled(true)

app/src/main/java/emu/skyline/preference/GpuDriverActivity.kt

@@ -12,10 +12,7 @@ import android.view.ViewTreeObserver
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
 import androidx.coordinatorlayout.widget.CoordinatorLayout
-import androidx.core.view.ViewCompat
 import androidx.core.view.WindowCompat
-import androidx.core.view.WindowInsetsCompat
-import androidx.core.view.updatePadding
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.viewbinding.ViewBinding
 import com.google.android.material.snackbar.Snackbar
@@ -29,6 +26,7 @@ import emu.skyline.databinding.GpuDriverActivityBinding
 import emu.skyline.utils.GpuDriverHelper
 import emu.skyline.utils.GpuDriverInstallResult
 import emu.skyline.utils.PreferenceSettings
+import emu.skyline.utils.WindowInsetsHelper
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -127,12 +125,8 @@ class GpuDriverActivity : AppCompatActivity() {
 
         setContentView(binding.root)
         WindowCompat.setDecorFitsSystemWindows(window, false)
-        // Apply inset padding to the driver list recycler view to avoid navigation bar overlap
-        ViewCompat.setOnApplyWindowInsetsListener(binding.driverList) { view, windowInsets ->
-            val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
-            view.updatePadding(bottom = insets.bottom)
-            WindowInsetsCompat.CONSUMED
-        }
+        WindowInsetsHelper.applyToActivity(binding.root, binding.driverList)
+        WindowInsetsHelper.addMargin(binding.addDriverButton, bottom = true)
 
         setSupportActionBar(binding.titlebar.toolbar)
         supportActionBar?.setDisplayHomeAsUpEnabled(true)

app/src/main/java/emu/skyline/utils/WindowInsetsHelper.kt

@@ -0,0 +1,85 @@
+/*
+ * SPDX-License-Identifier: MPL-2.0
+ * Copyright © 2022 Skyline Team and Contributors (https://github.com/skyline-emu/)
+ */
+
+package emu.skyline.utils
+
+import android.view.View
+import android.view.ViewGroup
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.updateLayoutParams
+
+/**
+ * An interface to easily add window insets handling to any layout
+ */
+interface WindowInsetsHelper {
+    companion object {
+        /**
+         * Convenience method to setup insets for most Activities with a single call
+         * @param rootView The root view of the layout
+         * @param listView The list view of the layout
+         */
+        fun applyToActivity(rootView : View, listView : View? = null) {
+            // Apply margin to the root view to avoid overlapping system bar in landscape mode
+            // Don't consume insets in the root view so that child views can apply them
+            setMargin(rootView, consume = false, left = true, right = true)
+
+            // Apply padding to the list view to avoid navigation bar overlap at the bottom
+            listView?.let { addPadding(it, bottom = true) }
+        }
+
+        fun setMargin(view : View, consume : Boolean = true, left : Boolean = false, top : Boolean = false, right : Boolean = false, bottom : Boolean = false) {
+            ViewCompat.setOnApplyWindowInsetsListener(view) { v, windowInsets ->
+                val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+                v.updateLayoutParams<ViewGroup.MarginLayoutParams> {
+                    if (left) leftMargin = insets.left
+                    if (top) topMargin = insets.top
+                    if (right) rightMargin = insets.right
+                    if (bottom) bottomMargin = insets.bottom
+                }
+                if (consume) WindowInsetsCompat.CONSUMED else windowInsets
+            }
+        }
+
+        fun addMargin(view : View, consume : Boolean = true, left : Boolean = false, top : Boolean = false, right : Boolean = false, bottom : Boolean = false) {
+            ViewCompat.setOnApplyWindowInsetsListener(view) { v, windowInsets ->
+                val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+                v.updateLayoutParams<ViewGroup.MarginLayoutParams> {
+                    if (left) leftMargin += insets.left
+                    if (top) topMargin += insets.top
+                    if (right) rightMargin += insets.right
+                    if (bottom) bottomMargin += insets.bottom
+                }
+                if (consume) WindowInsetsCompat.CONSUMED else windowInsets
+            }
+        }
+
+        fun setPadding(view : View, consume : Boolean = true, left : Boolean = false, top : Boolean = false, right : Boolean = false, bottom : Boolean = false) {
+            ViewCompat.setOnApplyWindowInsetsListener(view) { v, windowInsets ->
+                val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+                v.setPadding(
+                    if (left) insets.left else v.paddingLeft,
+                    if (top) insets.top else v.paddingTop,
+                    if (right) insets.right else v.paddingRight,
+                    if (bottom) insets.bottom else v.paddingBottom
+                )
+                if (consume) WindowInsetsCompat.CONSUMED else windowInsets
+            }
+        }
+
+        fun addPadding(view : View, consume : Boolean = true, left : Boolean = false, top : Boolean = false, right : Boolean = false, bottom : Boolean = false) {
+            ViewCompat.setOnApplyWindowInsetsListener(view) { v, windowInsets ->
+                val insets = windowInsets.getInsets(WindowInsetsCompat.Type.systemBars())
+                v.setPadding(
+                    if (left) insets.left + v.paddingLeft else v.paddingLeft,
+                    if (top) insets.top + v.paddingTop else v.paddingTop,
+                    if (right) insets.right + v.paddingRight else v.paddingRight,
+                    if (bottom) insets.bottom + v.paddingBottom else v.paddingBottom
+                )
+                if (consume) WindowInsetsCompat.CONSUMED else windowInsets
+            }
+        }
+    }
+}