Fix QR code UI issue

src/org/thoughtcrime/securesms/loki/QRCodeFragment.kt

@@ -2,6 +2,7 @@ package org.thoughtcrime.securesms.loki
 
 import android.os.Bundle
 import android.support.v4.app.Fragment
+import android.util.DisplayMetrics
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
@@ -9,6 +10,7 @@ import kotlinx.android.synthetic.main.fragment_qr_code.*
 import network.loki.messenger.R
 import org.thoughtcrime.securesms.ApplicationPreferencesActivity
 import org.thoughtcrime.securesms.qr.QrCode
+import org.thoughtcrime.securesms.util.ServiceUtil.getWindowManager
 import org.thoughtcrime.securesms.util.TextSecurePreferences
 
 class QRCodeFragment : Fragment() {
@@ -20,7 +22,10 @@ class QRCodeFragment : Fragment() {
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         val hexEncodedPublicKey = TextSecurePreferences.getLocalNumber(context)
-        val qrCode = QrCode.create(hexEncodedPublicKey)
+        val displayMetrics = DisplayMetrics()
+        getWindowManager(context).defaultDisplay.getMetrics(displayMetrics)
+        val size = displayMetrics.widthPixels - 2 * toPx(32, resources)
+        val qrCode = QrCode.create(hexEncodedPublicKey, size)
         qrCodeImageView.setImageBitmap(qrCode)
     }
 

src/org/thoughtcrime/securesms/qr/QrCode.java

@@ -16,8 +16,12 @@ public class QrCode {
   public static final String TAG = QrCode.class.getSimpleName();
 
   public static @NonNull Bitmap create(String data) {
+    return create(data, 1024);
+  }
+
+  public static @NonNull Bitmap create(String data, int size) {
     try {
-      BitMatrix result = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, 1024, 1024);
+      BitMatrix result = new QRCodeWriter().encode(data, BarcodeFormat.QR_CODE, size, size);
       Bitmap    bitmap = Bitmap.createBitmap(result.getWidth(), result.getHeight(), Bitmap.Config.ARGB_8888);
 
       for (int y = 0; y < result.getHeight(); y++) {