add an aspect ratio selector to the Editor activity

app/src/main/kotlin/com/simplemobiletools/gallery/activities/EditActivity.kt

@@ -29,12 +29,18 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
     private val ASPECT_Y = "aspectY"
     private val CROP = "crop"
 
+    private val ASPECT_RATIO_ANY = 0
+    private val ASPECT_RATIO_ONE_ONE = 1
+    private val ASPECT_RATIO_FOUR_THREE = 2
+    private val ASPECT_RATIO_SIXTEEN_NINE = 3
+
     private lateinit var uri: Uri
     private lateinit var saveUri: Uri
     private var resizeWidth = 0
     private var resizeHeight = 0
     private var isCropIntent = false
     private var isEditingWithThirdParty = false
+    private var currentAspectRatio = ASPECT_RATIO_ANY
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -88,8 +94,11 @@ class EditActivity : SimpleActivity(), CropImageView.OnCropImageCompleteListener
             setOnCropImageCompleteListener(this@EditActivity)
             setImageUriAsync(uri)
 
-            if (isCropIntent && shouldCropSquare())
+            if (isCropIntent && shouldCropSquare()) {
+                currentAspectRatio = ASPECT_RATIO_ONE_ONE
                 setFixedAspectRatio(true)
+                bottom_aspect_ratio.beGone()
+            }
         }
 
         setupBottomActions()

app/src/main/res/layout/bottom_editor_actions.xml

@@ -27,10 +27,21 @@
         android:layout_height="wrap_content"
         android:padding="@dimen/medium_margin"
         android:src="@drawable/ic_minimize"
-        app:layout_constraintEnd_toStartOf="@+id/bottom_flip_horizontally"
+        app:layout_constraintEnd_toStartOf="@+id/bottom_aspect_ratio"
         app:layout_constraintHorizontal_bias="0.5"
         app:layout_constraintStart_toEndOf="@+id/bottom_rotate"/>
 
+    <ImageView
+        android:id="@+id/bottom_aspect_ratio"
+        style="@style/MyBorderlessBackgroundStyle"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:padding="@dimen/medium_margin"
+        android:src="@drawable/ic_aspect_ratio"
+        app:layout_constraintEnd_toStartOf="@+id/bottom_flip_horizontally"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toEndOf="@+id/bottom_resize"/>
+
     <ImageView
         android:id="@+id/bottom_flip_horizontally"
         style="@style/MyBorderlessBackgroundStyle"
@@ -40,7 +51,7 @@
         android:src="@drawable/ic_flip_horizontally"
         app:layout_constraintEnd_toStartOf="@+id/bottom_flip_vertically"
         app:layout_constraintHorizontal_bias="0.5"
-        app:layout_constraintStart_toEndOf="@+id/bottom_resize"/>
+        app:layout_constraintStart_toEndOf="@+id/bottom_aspect_ratio"/>
 
     <ImageView
         android:id="@+id/bottom_flip_vertically"