From f430d0059144983a02315522c5eed62d46b6a305 Mon Sep 17 00:00:00 2001
From: Maxim Bachinsky <maxim.bachinsky@touchin.ru>
Date: Tue, 26 Nov 2019 14:59:41 +0300
Subject: [PATCH] add freezing font scale factor in base activity

---
 .../navigation/activities/BaseActivity.kt      | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/navigation/src/main/java/ru/touchin/roboswag/components/navigation/activities/BaseActivity.kt b/navigation/src/main/java/ru/touchin/roboswag/components/navigation/activities/BaseActivity.kt
index b325d90..10cc05e 100644
--- a/navigation/src/main/java/ru/touchin/roboswag/components/navigation/activities/BaseActivity.kt
+++ b/navigation/src/main/java/ru/touchin/roboswag/components/navigation/activities/BaseActivity.kt
@@ -19,9 +19,12 @@
 
 package ru.touchin.roboswag.components.navigation.activities
 
+import android.content.Context
 import android.content.Intent
+import android.content.res.Configuration
 import android.os.Bundle
 import android.os.PersistableBundle
+import android.view.WindowManager
 import androidx.appcompat.app.AppCompatActivity
 import ru.touchin.roboswag.components.navigation.keyboard_resizeable.KeyboardBehaviorDetector
 import ru.touchin.roboswag.components.navigation.viewcontrollers.LifecycleLoggingObserver
@@ -38,12 +41,15 @@ abstract class BaseActivity : AppCompatActivity() {
 
     var keyboardBehaviorDetector: KeyboardBehaviorDetector? = null
 
+    open val freezeFontScaleFactor: Boolean = true
+
     init {
         lifecycle.addObserver(LifecycleLoggingObserver(this))
     }
 
     override fun onCreate(savedInstanceState: Bundle?, persistentState: PersistableBundle?) {
         super.onCreate(savedInstanceState, persistentState)
+
         // Possible work around for market launches. See http://code.google.com/p/android/issues/detail?id=2373
         // for more details. Essentially, the market launches the main activity on top of other activities.
         // we never want this to happen. Instead, we check if we are the root and if not, we finish.
@@ -51,6 +57,10 @@ abstract class BaseActivity : AppCompatActivity() {
             Lc.e("Finishing activity as it is launcher but not root")
             finish()
         }
+
+        if (freezeFontScaleFactor) {
+            adjustFontScale(resources.configuration)
+        }
     }
 
     override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
@@ -89,4 +99,12 @@ abstract class BaseActivity : AppCompatActivity() {
         super.onBackPressed()
     }
 
+    private fun adjustFontScale(configuration: Configuration) {
+        configuration.fontScale = 1f
+        val metrics = resources.displayMetrics
+        (getSystemService(Context.WINDOW_SERVICE) as WindowManager).defaultDisplay.getMetrics(metrics)
+        metrics.scaledDensity = configuration.fontScale * metrics.density
+        baseContext.resources.updateConfiguration(configuration, metrics)
+    }
+
 }