remember the zoom level used at the file editor

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Config.kt

@@ -89,4 +89,8 @@ class Config(context: Context) : BaseConfig(context) {
     var enableRootAccess: Boolean
         get() = prefs.getBoolean(ENABLE_ROOT_ACCESS, false)
         set(enableRootAccess) = prefs.edit().putBoolean(ENABLE_ROOT_ACCESS, enableRootAccess).apply()
+
+    var editorTextZoom: Float
+        get() = prefs.getFloat(EDITOR_TEXT_ZOOM, 0f)
+        set(editorTextZoom) = prefs.edit().putFloat(EDITOR_TEXT_ZOOM, editorTextZoom).apply()
 }

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/helpers/Constants.kt

@@ -10,6 +10,7 @@ const val SORT_FOLDER_PREFIX = "sort_folder_"
 const val TEMPORARILY_SHOW_HIDDEN = "temporarily_show_hidden"
 const val IS_ROOT_AVAILABLE = "is_root_available"
 const val ENABLE_ROOT_ACCESS = "enable_root_access"
+const val EDITOR_TEXT_ZOOM = "editor_text_zoom"
 
 // open as
 const val OPEN_AS_DEFAULT = 0

app/src/main/kotlin/com/simplemobiletools/filemanager/pro/views/GestureTextView.kt

@@ -9,6 +9,7 @@ import com.alexvasilkov.gestures.GestureController
 import com.alexvasilkov.gestures.State
 import com.alexvasilkov.gestures.views.interfaces.GestureView
 import com.simplemobiletools.commons.extensions.getAdjustedPrimaryColor
+import com.simplemobiletools.commons.extensions.onGlobalLayout
 import com.simplemobiletools.filemanager.pro.extensions.config
 
 // taken from
@@ -34,6 +35,14 @@ class GestureTextView @JvmOverloads constructor(context: Context, attrs: Attribu
         origSize = textSize
         setTextColor(context.config.textColor)
         setLinkTextColor(context.getAdjustedPrimaryColor())
+
+        val storedTextZoom = context.config.editorTextZoom
+        if (storedTextZoom != 0f) {
+            onGlobalLayout {
+                controller.state.zoomTo(storedTextZoom, width / 2f, height / 2f)
+                controller.updateState()
+            }
+        }
     }
 
     override fun getController() = controller
@@ -67,6 +76,7 @@ class GestureTextView @JvmOverloads constructor(context: Context, attrs: Attribu
         if (!State.equals(this.size, size)) {
             this.size = size
             super.setTextSize(TypedValue.COMPLEX_UNIT_PX, size)
+            context.config.editorTextZoom = state.zoom
         }
     }
 }