fix(android): Fix aspect ratio crash for non-16:9 settings

- Add missing Force 32:9 option and fix Stretch mapping
- Add safety checks to prevent division by zero in FixedRatioSurfaceView
- Update handlers to support all 6 AspectRatio enum values

Fixes crashes when selecting any aspect ratio other than Force 16:9.

Signed-off-by: Zephyron <zephyron@citron-emu.org>

src/android/app/src/main/java/org/citron/citron_emu/activities/EmulationActivity.kt

@@ -314,6 +314,7 @@ class EmulationActivity : AppCompatActivity(), SensorEventListener {
             2 -> Rational(21, 9)
             3 -> Rational(16, 10)
             4 -> Rational(32, 9)
+            5 -> null // Stretch to window
             else -> null // Best fit
         }
         return this.apply { aspectRatio?.let { setAspectRatio(it) } }

src/android/app/src/main/java/org/citron/citron_emu/fragments/EmulationFragment.kt

@@ -668,6 +668,7 @@ class EmulationFragment : Fragment(), SurfaceHolder.Callback {
             2 -> Rational(21, 9)
             3 -> Rational(16, 10)
             4 -> Rational(32, 9)
+            5 -> null // Stretch to window
             else -> null // Best fit
         }
         when (verticalAlignment) {

src/android/app/src/main/java/org/citron/citron_emu/views/FixedRatioSurfaceView.kt

@@ -1,4 +1,5 @@
 // SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-FileCopyrightText: 2025 citron Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
 package org.citron.citron_emu.views
@@ -27,7 +28,15 @@ class FixedRatioSurfaceView @JvmOverloads constructor(
     override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
         val displayWidth: Float = MeasureSpec.getSize(widthMeasureSpec).toFloat()
         val displayHeight: Float = MeasureSpec.getSize(heightMeasureSpec).toFloat()
-        if (aspectRatio != 0f) {
+
+        // Safety check: ensure we have valid dimensions
+        if (displayWidth <= 0f || displayHeight <= 0f || aspectRatio == 0f) {
+            // Fall back to default behavior for stretch or invalid dimensions
+            super.onMeasure(widthMeasureSpec, heightMeasureSpec)
+            return
+        }
+
+        if (aspectRatio > 0f) {
             val displayAspect = displayWidth / displayHeight
             if (displayAspect < aspectRatio) {
                 // Max out width

src/android/app/src/main/res/values/arrays.xml

@@ -142,6 +142,7 @@
         <item>@string/ratio_force_four_three</item>
         <item>@string/ratio_force_twenty_one_nine</item>
         <item>@string/ratio_force_sixteen_ten</item>
+        <item>@string/ratio_force_thirty_two_nine</item>
         <item>@string/ratio_stretch</item>
     </string-array>
 
@@ -151,6 +152,7 @@
         <item>2</item>
         <item>3</item>
         <item>4</item>
+        <item>5</item>
     </integer-array>
 
     <string-array name="rendererScalingFilterNames">

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

@@ -656,6 +656,7 @@
     <string name="ratio_force_four_three">Force 4:3</string>
     <string name="ratio_force_twenty_one_nine">Force 21:9</string>
     <string name="ratio_force_sixteen_ten">Force 16:10</string>
+    <string name="ratio_force_thirty_two_nine">Force 32:9</string>
     <string name="ratio_stretch">Stretch to window</string>
 
     <!-- CPU Backend -->